drivers/net/ethernet/intel/i40e/i40e_main.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
   3
   4 #include <linux/etherdevice.h>
   5 #include <linux/of_net.h>
   6 #include <linux/pci.h>
   7 #include <linux/bpf.h>
   8 #include <generated/utsrelease.h>
   9
  10 /* Local includes */
  11 #include "i40e.h"
  12 #include "i40e_diag.h"
  13 #include "i40e_xsk.h"
  14 #include <net/udp_tunnel.h>
  15 #include <net/xdp_sock_drv.h>
  16 /* All i40e tracepoints are defined by the include below, which
  17  * must be included exactly once across the whole kernel with
  18  * CREATE_TRACE_POINTS defined
  19  */
  20 #define CREATE_TRACE_POINTS
  21 #include "i40e_trace.h"
  22
  23 const char i40e_driver_name[] = "i40e";
  24 static const char i40e_driver_string[] =
  25                         "Intel(R) Ethernet Connection XL710 Network Driver";
  26
  27 static const char i40e_copyright[] = "Copyright (c) 2013 - 2019 Intel Corporation.";
  28
  29 /* a bit of forward declarations */
  30 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  31 static void i40e_handle_reset_warning(struct i40e_pf *pf, bool lock_acquired);
  32 static int i40e_add_vsi(struct i40e_vsi *vsi);
  33 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  34 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit, bool lock_acquired);
  35 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  36 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  37 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  38 static void i40e_prep_for_reset(struct i40e_pf *pf, bool lock_acquired);
  39 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit,
  40                                    bool lock_acquired);
  41 static int i40e_reset(struct i40e_pf *pf);
  42 static void i40e_rebuild(struct i40e_pf *pf, bool reinit, bool lock_acquired);
  43 static int i40e_setup_misc_vector_for_recovery_mode(struct i40e_pf *pf);
  44 static int i40e_restore_interrupt_scheme(struct i40e_pf *pf);
  45 static bool i40e_check_recovery_mode(struct i40e_pf *pf);
  46 static int i40e_init_recovery_mode(struct i40e_pf *pf, struct i40e_hw *hw);
  47 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  48 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  49 static int i40e_get_capabilities(struct i40e_pf *pf,
  50                                  enum i40e_admin_queue_opc list_type);
  51 static bool i40e_is_total_port_shutdown_enabled(struct i40e_pf *pf);
  52
  53 /* i40e_pci_tbl - PCI Device ID Table
  54  *
  55  * Last entry must be all 0s
  56  *
  57  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  58  *   Class, Class Mask, private data (not used) }
  59  */
  60 static const struct pci_device_id i40e_pci_tbl[] = {
  61         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  62         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  63         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  64         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  65         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  66         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  67         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  68         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  69         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  70         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_BC), 0},
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_SFP), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_B), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_X722), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_X722), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_I_X722), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_X710_N3000), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_XXV710_N3000), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_25G_B), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_25G_SFP28), 0},
  85         /* required last entry */
  86         {0, }
  87 };
  88 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  89
  90 #define I40E_MAX_VF_COUNT 128
  91 static int debug = -1;
  92 module_param(debug, uint, 0);
  93 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all), Debug mask (0x8XXXXXXX)");
  94
  95 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  96 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  97 MODULE_LICENSE("GPL v2");
  98
  99 static struct workqueue_struct *i40e_wq;
 100
 101 static void netdev_hw_addr_refcnt(struct i40e_mac_filter *f,
 102                                   struct net_device *netdev, int delta)
 103 {
 104         struct netdev_hw_addr_list *ha_list;
 105         struct netdev_hw_addr *ha;
 106
 107         if (!f || !netdev)
 108                 return;
 109
 110         if (is_unicast_ether_addr(f->macaddr) || is_link_local_ether_addr(f->macaddr))
 111                 ha_list = &netdev->uc;
 112         else
 113                 ha_list = &netdev->mc;
 114
 115         netdev_hw_addr_list_for_each(ha, ha_list) {
 116                 if (ether_addr_equal(ha->addr, f->macaddr)) {
 117                         ha->refcount += delta;
 118                         if (ha->refcount <= 0)
 119                                 ha->refcount = 1;
 120                         break;
 121                 }
 122         }
 123 }
 124
 125 /**
 126  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 127  * @hw:   pointer to the HW structure
 128  * @mem:  ptr to mem struct to fill out
 129  * @size: size of memory requested
 130  * @alignment: what to align the allocation to
 131  **/
 132 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 133                             u64 size, u32 alignment)
 134 {
 135         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 136
 137         mem->size = ALIGN(size, alignment);
 138         mem->va = dma_alloc_coherent(&pf->pdev->dev, mem->size, &mem->pa,
 139                                      GFP_KERNEL);
 140         if (!mem->va)
 141                 return -ENOMEM;
 142
 143         return 0;
 144 }
 145
 146 /**
 147  * i40e_free_dma_mem_d - OS specific memory free for shared code
 148  * @hw:   pointer to the HW structure
 149  * @mem:  ptr to mem struct to free
 150  **/
 151 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 152 {
 153         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 154
 155         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 156         mem->va = NULL;
 157         mem->pa = 0;
 158         mem->size = 0;
 159
 160         return 0;
 161 }
 162
 163 /**
 164  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 165  * @hw:   pointer to the HW structure
 166  * @mem:  ptr to mem struct to fill out
 167  * @size: size of memory requested
 168  **/
 169 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 170                              u32 size)
 171 {
 172         mem->size = size;
 173         mem->va = kzalloc(size, GFP_KERNEL);
 174
 175         if (!mem->va)
 176                 return -ENOMEM;
 177
 178         return 0;
 179 }
 180
 181 /**
 182  * i40e_free_virt_mem_d - OS specific memory free for shared code
 183  * @hw:   pointer to the HW structure
 184  * @mem:  ptr to mem struct to free
 185  **/
 186 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 187 {
 188         /* it's ok to kfree a NULL pointer */
 189         kfree(mem->va);
 190         mem->va = NULL;
 191         mem->size = 0;
 192
 193         return 0;
 194 }
 195
 196 /**
 197  * i40e_get_lump - find a lump of free generic resource
 198  * @pf: board private structure
 199  * @pile: the pile of resource to search
 200  * @needed: the number of items needed
 201  * @id: an owner id to stick on the items assigned
 202  *
 203  * Returns the base item index of the lump, or negative for error
 204  **/
 205 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 206                          u16 needed, u16 id)
 207 {
 208         int ret = -ENOMEM;
 209         int i, j;
 210
 211         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 212                 dev_info(&pf->pdev->dev,
 213                          "param err: pile=%s needed=%d id=0x%04x\n",
 214                          pile ? "<valid>" : "<null>", needed, id);
 215                 return -EINVAL;
 216         }
 217
 218         /* Allocate last queue in the pile for FDIR VSI queue
 219          * so it doesn't fragment the qp_pile
 220          */
 221         if (pile == pf->qp_pile && pf->vsi[id]->type == I40E_VSI_FDIR) {
 222                 if (pile->list[pile->num_entries - 1] & I40E_PILE_VALID_BIT) {
 223                         dev_err(&pf->pdev->dev,
 224                                 "Cannot allocate queue %d for I40E_VSI_FDIR\n",
 225                                 pile->num_entries - 1);
 226                         return -ENOMEM;
 227                 }
 228                 pile->list[pile->num_entries - 1] = id | I40E_PILE_VALID_BIT;
 229                 return pile->num_entries - 1;
 230         }
 231
 232         i = 0;
 233         while (i < pile->num_entries) {
 234                 /* skip already allocated entries */
 235                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 236                         i++;
 237                         continue;
 238                 }
 239
 240                 /* do we have enough in this lump? */
 241                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 242                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 243                                 break;
 244                 }
 245
 246                 if (j == needed) {
 247                         /* there was enough, so assign it to the requestor */
 248                         for (j = 0; j < needed; j++)
 249                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 250                         ret = i;
 251                         break;
 252                 }
 253
 254                 /* not enough, so skip over it and continue looking */
 255                 i += j;
 256         }
 257
 258         return ret;
 259 }
 260
 261 /**
 262  * i40e_put_lump - return a lump of generic resource
 263  * @pile: the pile of resource to search
 264  * @index: the base item index
 265  * @id: the owner id of the items assigned
 266  *
 267  * Returns the count of items in the lump
 268  **/
 269 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 270 {
 271         int valid_id = (id | I40E_PILE_VALID_BIT);
 272         int count = 0;
 273         u16 i;
 274
 275         if (!pile || index >= pile->num_entries)
 276                 return -EINVAL;
 277
 278         for (i = index;
 279              i < pile->num_entries && pile->list[i] == valid_id;
 280              i++) {
 281                 pile->list[i] = 0;
 282                 count++;
 283         }
 284
 285
 286         return count;
 287 }
 288
 289 /**
 290  * i40e_find_vsi_from_id - searches for the vsi with the given id
 291  * @pf: the pf structure to search for the vsi
 292  * @id: id of the vsi it is searching for
 293  **/
 294 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 295 {
 296         int i;
 297
 298         for (i = 0; i < pf->num_alloc_vsi; i++)
 299                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 300                         return pf->vsi[i];
 301
 302         return NULL;
 303 }
 304
 305 /**
 306  * i40e_service_event_schedule - Schedule the service task to wake up
 307  * @pf: board private structure
 308  *
 309  * If not already scheduled, this puts the task into the work queue
 310  **/
 311 void i40e_service_event_schedule(struct i40e_pf *pf)
 312 {
 313         if ((!test_bit(__I40E_DOWN, pf->state) &&
 314              !test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state)) ||
 315               test_bit(__I40E_RECOVERY_MODE, pf->state))
 316                 queue_work(i40e_wq, &pf->service_task);
 317 }
 318
 319 /**
 320  * i40e_tx_timeout - Respond to a Tx Hang
 321  * @netdev: network interface device structure
 322  * @txqueue: queue number timing out
 323  *
 324  * If any port has noticed a Tx timeout, it is likely that the whole
 325  * device is munged, not just the one netdev port, so go for the full
 326  * reset.
 327  **/
 328 static void i40e_tx_timeout(struct net_device *netdev, unsigned int txqueue)
 329 {
 330         struct i40e_netdev_priv *np = netdev_priv(netdev);
 331         struct i40e_vsi *vsi = np->vsi;
 332         struct i40e_pf *pf = vsi->back;
 333         struct i40e_ring *tx_ring = NULL;
 334         unsigned int i;
 335         u32 head, val;
 336
 337         pf->tx_timeout_count++;
 338
 339         /* with txqueue index, find the tx_ring struct */
 340         for (i = 0; i < vsi->num_queue_pairs; i++) {
 341                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 342                         if (txqueue ==
 343                             vsi->tx_rings[i]->queue_index) {
 344                                 tx_ring = vsi->tx_rings[i];
 345                                 break;
 346                         }
 347                 }
 348         }
 349
 350         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 351                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 352         else if (time_before(jiffies,
 353                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 354                 return;   /* don't do any new action before the next timeout */
 355
 356         /* don't kick off another recovery if one is already pending */
 357         if (test_and_set_bit(__I40E_TIMEOUT_RECOVERY_PENDING, pf->state))
 358                 return;
 359
 360         if (tx_ring) {
 361                 head = i40e_get_head(tx_ring);
 362                 /* Read interrupt register */
 363                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 364                         val = rd32(&pf->hw,
 365                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 366                                                 tx_ring->vsi->base_vector - 1));
 367                 else
 368                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 369
 370                 netdev_info(netdev, "tx_timeout: VSI_seid: %d, Q %d, NTC: 0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x, INT: 0x%x\n",
 371                             vsi->seid, txqueue, tx_ring->next_to_clean,
 372                             head, tx_ring->next_to_use,
 373                             readl(tx_ring->tail), val);
 374         }
 375
 376         pf->tx_timeout_last_recovery = jiffies;
 377         netdev_info(netdev, "tx_timeout recovery level %d, txqueue %d\n",
 378                     pf->tx_timeout_recovery_level, txqueue);
 379
 380         switch (pf->tx_timeout_recovery_level) {
 381         case 1:
 382                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
 383                 break;
 384         case 2:
 385                 set_bit(__I40E_CORE_RESET_REQUESTED, pf->state);
 386                 break;
 387         case 3:
 388                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state);
 389                 break;
 390         default:
 391                 netdev_err(netdev, "tx_timeout recovery unsuccessful, device is in non-recoverable state.\n");
 392                 set_bit(__I40E_DOWN_REQUESTED, pf->state);
 393                 set_bit(__I40E_VSI_DOWN_REQUESTED, vsi->state);
 394                 break;
 395         }
 396
 397         i40e_service_event_schedule(pf);
 398         pf->tx_timeout_recovery_level++;
 399 }
 400
 401 /**
 402  * i40e_get_vsi_stats_struct - Get System Network Statistics
 403  * @vsi: the VSI we care about
 404  *
 405  * Returns the address of the device statistics structure.
 406  * The statistics are actually updated from the service task.
 407  **/
 408 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 409 {
 410         return &vsi->net_stats;
 411 }
 412
 413 /**
 414  * i40e_get_netdev_stats_struct_tx - populate stats from a Tx ring
 415  * @ring: Tx ring to get statistics from
 416  * @stats: statistics entry to be updated
 417  **/
 418 static void i40e_get_netdev_stats_struct_tx(struct i40e_ring *ring,
 419                                             struct rtnl_link_stats64 *stats)
 420 {
 421         u64 bytes, packets;
 422         unsigned int start;
 423
 424         do {
 425                 start = u64_stats_fetch_begin_irq(&ring->syncp);
 426                 packets = ring->stats.packets;
 427                 bytes   = ring->stats.bytes;
 428         } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
 429
 430         stats->tx_packets += packets;
 431         stats->tx_bytes   += bytes;
 432 }
 433
 434 /**
 435  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 436  * @netdev: network interface device structure
 437  * @stats: data structure to store statistics
 438  *
 439  * Returns the address of the device statistics structure.
 440  * The statistics are actually updated from the service task.
 441  **/
 442 static void i40e_get_netdev_stats_struct(struct net_device *netdev,
 443                                   struct rtnl_link_stats64 *stats)
 444 {
 445         struct i40e_netdev_priv *np = netdev_priv(netdev);
 446         struct i40e_vsi *vsi = np->vsi;
 447         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 448         struct i40e_ring *ring;
 449         int i;
 450
 451         if (test_bit(__I40E_VSI_DOWN, vsi->state))
 452                 return;
 453
 454         if (!vsi->tx_rings)
 455                 return;
 456
 457         rcu_read_lock();
 458         for (i = 0; i < vsi->num_queue_pairs; i++) {
 459                 u64 bytes, packets;
 460                 unsigned int start;
 461
 462                 ring = READ_ONCE(vsi->tx_rings[i]);
 463                 if (!ring)
 464                         continue;
 465                 i40e_get_netdev_stats_struct_tx(ring, stats);
 466
 467                 if (i40e_enabled_xdp_vsi(vsi)) {
 468                         ring = READ_ONCE(vsi->xdp_rings[i]);
 469                         if (!ring)
 470                                 continue;
 471                         i40e_get_netdev_stats_struct_tx(ring, stats);
 472                 }
 473
 474                 ring = READ_ONCE(vsi->rx_rings[i]);
 475                 if (!ring)
 476                         continue;
 477                 do {
 478                         start   = u64_stats_fetch_begin_irq(&ring->syncp);
 479                         packets = ring->stats.packets;
 480                         bytes   = ring->stats.bytes;
 481                 } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
 482
 483                 stats->rx_packets += packets;
 484                 stats->rx_bytes   += bytes;
 485
 486         }
 487         rcu_read_unlock();
 488
 489         /* following stats updated by i40e_watchdog_subtask() */
 490         stats->multicast        = vsi_stats->multicast;
 491         stats->tx_errors        = vsi_stats->tx_errors;
 492         stats->tx_dropped       = vsi_stats->tx_dropped;
 493         stats->rx_errors        = vsi_stats->rx_errors;
 494         stats->rx_dropped       = vsi_stats->rx_dropped;
 495         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 496         stats->rx_length_errors = vsi_stats->rx_length_errors;
 497 }
 498
 499 /**
 500  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 501  * @vsi: the VSI to have its stats reset
 502  **/
 503 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 504 {
 505         struct rtnl_link_stats64 *ns;
 506         int i;
 507
 508         if (!vsi)
 509                 return;
 510
 511         ns = i40e_get_vsi_stats_struct(vsi);
 512         memset(ns, 0, sizeof(*ns));
 513         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 514         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 515         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 516         if (vsi->rx_rings && vsi->rx_rings[0]) {
 517                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 518                         memset(&vsi->rx_rings[i]->stats, 0,
 519                                sizeof(vsi->rx_rings[i]->stats));
 520                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 521                                sizeof(vsi->rx_rings[i]->rx_stats));
 522                         memset(&vsi->tx_rings[i]->stats, 0,
 523                                sizeof(vsi->tx_rings[i]->stats));
 524                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 525                                sizeof(vsi->tx_rings[i]->tx_stats));
 526                 }
 527         }
 528         vsi->stat_offsets_loaded = false;
 529 }
 530
 531 /**
 532  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 533  * @pf: the PF to be reset
 534  **/
 535 void i40e_pf_reset_stats(struct i40e_pf *pf)
 536 {
 537         int i;
 538
 539         memset(&pf->stats, 0, sizeof(pf->stats));
 540         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 541         pf->stat_offsets_loaded = false;
 542
 543         for (i = 0; i < I40E_MAX_VEB; i++) {
 544                 if (pf->veb[i]) {
 545                         memset(&pf->veb[i]->stats, 0,
 546                                sizeof(pf->veb[i]->stats));
 547                         memset(&pf->veb[i]->stats_offsets, 0,
 548                                sizeof(pf->veb[i]->stats_offsets));
 549                         memset(&pf->veb[i]->tc_stats, 0,
 550                                sizeof(pf->veb[i]->tc_stats));
 551                         memset(&pf->veb[i]->tc_stats_offsets, 0,
 552                                sizeof(pf->veb[i]->tc_stats_offsets));
 553                         pf->veb[i]->stat_offsets_loaded = false;
 554                 }
 555         }
 556         pf->hw_csum_rx_error = 0;
 557 }
 558
 559 /**
 560  * i40e_compute_pci_to_hw_id - compute index form PCI function.
 561  * @vsi: ptr to the VSI to read from.
 562  * @hw: ptr to the hardware info.
 563  **/
 564 static u32 i40e_compute_pci_to_hw_id(struct i40e_vsi *vsi, struct i40e_hw *hw)
 565 {
 566         int pf_count = i40e_get_pf_count(hw);
 567
 568         if (vsi->type == I40E_VSI_SRIOV)
 569                 return (hw->port * BIT(7)) / pf_count + vsi->vf_id;
 570
 571         return hw->port + BIT(7);
 572 }
 573
 574 /**
 575  * i40e_stat_update64 - read and update a 64 bit stat from the chip.
 576  * @hw: ptr to the hardware info.
 577  * @hireg: the high 32 bit reg to read.
 578  * @loreg: the low 32 bit reg to read.
 579  * @offset_loaded: has the initial offset been loaded yet.
 580  * @offset: ptr to current offset value.
 581  * @stat: ptr to the stat.
 582  *
 583  * Since the device stats are not reset at PFReset, they will not
 584  * be zeroed when the driver starts.  We'll save the first values read
 585  * and use them as offsets to be subtracted from the raw values in order
 586  * to report stats that count from zero.
 587  **/
 588 static void i40e_stat_update64(struct i40e_hw *hw, u32 hireg, u32 loreg,
 589                                bool offset_loaded, u64 *offset, u64 *stat)
 590 {
 591         u64 new_data;
 592
 593         new_data = rd64(hw, loreg);
 594
 595         if (!offset_loaded || new_data < *offset)
 596                 *offset = new_data;
 597         *stat = new_data - *offset;
 598 }
 599
 600 /**
 601  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 602  * @hw: ptr to the hardware info
 603  * @hireg: the high 32 bit reg to read
 604  * @loreg: the low 32 bit reg to read
 605  * @offset_loaded: has the initial offset been loaded yet
 606  * @offset: ptr to current offset value
 607  * @stat: ptr to the stat
 608  *
 609  * Since the device stats are not reset at PFReset, they likely will not
 610  * be zeroed when the driver starts.  We'll save the first values read
 611  * and use them as offsets to be subtracted from the raw values in order
 612  * to report stats that count from zero.  In the process, we also manage
 613  * the potential roll-over.
 614  **/
 615 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 616                                bool offset_loaded, u64 *offset, u64 *stat)
 617 {
 618         u64 new_data;
 619
 620         if (hw->device_id == I40E_DEV_ID_QEMU) {
 621                 new_data = rd32(hw, loreg);
 622                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 623         } else {
 624                 new_data = rd64(hw, loreg);
 625         }
 626         if (!offset_loaded)
 627                 *offset = new_data;
 628         if (likely(new_data >= *offset))
 629                 *stat = new_data - *offset;
 630         else
 631                 *stat = (new_data + BIT_ULL(48)) - *offset;
 632         *stat &= 0xFFFFFFFFFFFFULL;
 633 }
 634
 635 /**
 636  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 637  * @hw: ptr to the hardware info
 638  * @reg: the hw reg to read
 639  * @offset_loaded: has the initial offset been loaded yet
 640  * @offset: ptr to current offset value
 641  * @stat: ptr to the stat
 642  **/
 643 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 644                                bool offset_loaded, u64 *offset, u64 *stat)
 645 {
 646         u32 new_data;
 647
 648         new_data = rd32(hw, reg);
 649         if (!offset_loaded)
 650                 *offset = new_data;
 651         if (likely(new_data >= *offset))
 652                 *stat = (u32)(new_data - *offset);
 653         else
 654                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 655 }
 656
 657 /**
 658  * i40e_stat_update_and_clear32 - read and clear hw reg, update a 32 bit stat
 659  * @hw: ptr to the hardware info
 660  * @reg: the hw reg to read and clear
 661  * @stat: ptr to the stat
 662  **/
 663 static void i40e_stat_update_and_clear32(struct i40e_hw *hw, u32 reg, u64 *stat)
 664 {
 665         u32 new_data = rd32(hw, reg);
 666
 667         wr32(hw, reg, 1); /* must write a nonzero value to clear register */
 668         *stat += new_data;
 669 }
 670
 671 /**
 672  * i40e_stats_update_rx_discards - update rx_discards.
 673  * @vsi: ptr to the VSI to be updated.
 674  * @hw: ptr to the hardware info.
 675  * @stat_idx: VSI's stat_counter_idx.
 676  * @offset_loaded: ptr to the VSI's stat_offsets_loaded.
 677  * @stat_offset: ptr to stat_offset to store first read of specific register.
 678  * @stat: ptr to VSI's stat to be updated.
 679  **/
 680 static void
 681 i40e_stats_update_rx_discards(struct i40e_vsi *vsi, struct i40e_hw *hw,
 682                               int stat_idx, bool offset_loaded,
 683                               struct i40e_eth_stats *stat_offset,
 684                               struct i40e_eth_stats *stat)
 685 {
 686         u64 rx_rdpc, rx_rxerr;
 687
 688         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx), offset_loaded,
 689                            &stat_offset->rx_discards, &rx_rdpc);
 690         i40e_stat_update64(hw,
 691                            I40E_GL_RXERR1H(i40e_compute_pci_to_hw_id(vsi, hw)),
 692                            I40E_GL_RXERR1L(i40e_compute_pci_to_hw_id(vsi, hw)),
 693                            offset_loaded, &stat_offset->rx_discards_other,
 694                            &rx_rxerr);
 695
 696         stat->rx_discards = rx_rdpc + rx_rxerr;
 697 }
 698
 699 /**
 700  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 701  * @vsi: the VSI to be updated
 702  **/
 703 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 704 {
 705         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 706         struct i40e_pf *pf = vsi->back;
 707         struct i40e_hw *hw = &pf->hw;
 708         struct i40e_eth_stats *oes;
 709         struct i40e_eth_stats *es;     /* device's eth stats */
 710
 711         es = &vsi->eth_stats;
 712         oes = &vsi->eth_stats_offsets;
 713
 714         /* Gather up the stats that the hw collects */
 715         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 716                            vsi->stat_offsets_loaded,
 717                            &oes->tx_errors, &es->tx_errors);
 718         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 719                            vsi->stat_offsets_loaded,
 720                            &oes->rx_discards, &es->rx_discards);
 721         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 722                            vsi->stat_offsets_loaded,
 723                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 724
 725         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 726                            I40E_GLV_GORCL(stat_idx),
 727                            vsi->stat_offsets_loaded,
 728                            &oes->rx_bytes, &es->rx_bytes);
 729         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 730                            I40E_GLV_UPRCL(stat_idx),
 731                            vsi->stat_offsets_loaded,
 732                            &oes->rx_unicast, &es->rx_unicast);
 733         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 734                            I40E_GLV_MPRCL(stat_idx),
 735                            vsi->stat_offsets_loaded,
 736                            &oes->rx_multicast, &es->rx_multicast);
 737         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 738                            I40E_GLV_BPRCL(stat_idx),
 739                            vsi->stat_offsets_loaded,
 740                            &oes->rx_broadcast, &es->rx_broadcast);
 741
 742         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 743                            I40E_GLV_GOTCL(stat_idx),
 744                            vsi->stat_offsets_loaded,
 745                            &oes->tx_bytes, &es->tx_bytes);
 746         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 747                            I40E_GLV_UPTCL(stat_idx),
 748                            vsi->stat_offsets_loaded,
 749                            &oes->tx_unicast, &es->tx_unicast);
 750         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 751                            I40E_GLV_MPTCL(stat_idx),
 752                            vsi->stat_offsets_loaded,
 753                            &oes->tx_multicast, &es->tx_multicast);
 754         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 755                            I40E_GLV_BPTCL(stat_idx),
 756                            vsi->stat_offsets_loaded,
 757                            &oes->tx_broadcast, &es->tx_broadcast);
 758
 759         i40e_stats_update_rx_discards(vsi, hw, stat_idx,
 760                                       vsi->stat_offsets_loaded, oes, es);
 761
 762         vsi->stat_offsets_loaded = true;
 763 }
 764
 765 /**
 766  * i40e_update_veb_stats - Update Switch component statistics
 767  * @veb: the VEB being updated
 768  **/
 769 void i40e_update_veb_stats(struct i40e_veb *veb)
 770 {
 771         struct i40e_pf *pf = veb->pf;
 772         struct i40e_hw *hw = &pf->hw;
 773         struct i40e_eth_stats *oes;
 774         struct i40e_eth_stats *es;     /* device's eth stats */
 775         struct i40e_veb_tc_stats *veb_oes;
 776         struct i40e_veb_tc_stats *veb_es;
 777         int i, idx = 0;
 778
 779         idx = veb->stats_idx;
 780         es = &veb->stats;
 781         oes = &veb->stats_offsets;
 782         veb_es = &veb->tc_stats;
 783         veb_oes = &veb->tc_stats_offsets;
 784
 785         /* Gather up the stats that the hw collects */
 786         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 787                            veb->stat_offsets_loaded,
 788                            &oes->tx_discards, &es->tx_discards);
 789         if (hw->revision_id > 0)
 790                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 791                                    veb->stat_offsets_loaded,
 792                                    &oes->rx_unknown_protocol,
 793                                    &es->rx_unknown_protocol);
 794         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 795                            veb->stat_offsets_loaded,
 796                            &oes->rx_bytes, &es->rx_bytes);
 797         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 798                            veb->stat_offsets_loaded,
 799                            &oes->rx_unicast, &es->rx_unicast);
 800         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 801                            veb->stat_offsets_loaded,
 802                            &oes->rx_multicast, &es->rx_multicast);
 803         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 804                            veb->stat_offsets_loaded,
 805                            &oes->rx_broadcast, &es->rx_broadcast);
 806
 807         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 808                            veb->stat_offsets_loaded,
 809                            &oes->tx_bytes, &es->tx_bytes);
 810         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 811                            veb->stat_offsets_loaded,
 812                            &oes->tx_unicast, &es->tx_unicast);
 813         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 814                            veb->stat_offsets_loaded,
 815                            &oes->tx_multicast, &es->tx_multicast);
 816         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 817                            veb->stat_offsets_loaded,
 818                            &oes->tx_broadcast, &es->tx_broadcast);
 819         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 820                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 821                                    I40E_GLVEBTC_RPCL(i, idx),
 822                                    veb->stat_offsets_loaded,
 823                                    &veb_oes->tc_rx_packets[i],
 824                                    &veb_es->tc_rx_packets[i]);
 825                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 826                                    I40E_GLVEBTC_RBCL(i, idx),
 827                                    veb->stat_offsets_loaded,
 828                                    &veb_oes->tc_rx_bytes[i],
 829                                    &veb_es->tc_rx_bytes[i]);
 830                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 831                                    I40E_GLVEBTC_TPCL(i, idx),
 832                                    veb->stat_offsets_loaded,
 833                                    &veb_oes->tc_tx_packets[i],
 834                                    &veb_es->tc_tx_packets[i]);
 835                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 836                                    I40E_GLVEBTC_TBCL(i, idx),
 837                                    veb->stat_offsets_loaded,
 838                                    &veb_oes->tc_tx_bytes[i],
 839                                    &veb_es->tc_tx_bytes[i]);
 840         }
 841         veb->stat_offsets_loaded = true;
 842 }
 843
 844 /**
 845  * i40e_update_vsi_stats - Update the vsi statistics counters.
 846  * @vsi: the VSI to be updated
 847  *
 848  * There are a few instances where we store the same stat in a
 849  * couple of different structs.  This is partly because we have
 850  * the netdev stats that need to be filled out, which is slightly
 851  * different from the "eth_stats" defined by the chip and used in
 852  * VF communications.  We sort it out here.
 853  **/
 854 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 855 {
 856         struct i40e_pf *pf = vsi->back;
 857         struct rtnl_link_stats64 *ons;
 858         struct rtnl_link_stats64 *ns;   /* netdev stats */
 859         struct i40e_eth_stats *oes;
 860         struct i40e_eth_stats *es;     /* device's eth stats */
 861         u64 tx_restart, tx_busy;
 862         struct i40e_ring *p;
 863         u64 rx_page, rx_buf;
 864         u64 bytes, packets;
 865         unsigned int start;
 866         u64 tx_linearize;
 867         u64 tx_force_wb;
 868         u64 rx_p, rx_b;
 869         u64 tx_p, tx_b;
 870         u16 q;
 871
 872         if (test_bit(__I40E_VSI_DOWN, vsi->state) ||
 873             test_bit(__I40E_CONFIG_BUSY, pf->state))
 874                 return;
 875
 876         ns = i40e_get_vsi_stats_struct(vsi);
 877         ons = &vsi->net_stats_offsets;
 878         es = &vsi->eth_stats;
 879         oes = &vsi->eth_stats_offsets;
 880
 881         /* Gather up the netdev and vsi stats that the driver collects
 882          * on the fly during packet processing
 883          */
 884         rx_b = rx_p = 0;
 885         tx_b = tx_p = 0;
 886         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 887         rx_page = 0;
 888         rx_buf = 0;
 889         rcu_read_lock();
 890         for (q = 0; q < vsi->num_queue_pairs; q++) {
 891                 /* locate Tx ring */
 892                 p = READ_ONCE(vsi->tx_rings[q]);
 893                 if (!p)
 894                         continue;
 895
 896                 do {
 897                         start = u64_stats_fetch_begin_irq(&p->syncp);
 898                         packets = p->stats.packets;
 899                         bytes = p->stats.bytes;
 900                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 901                 tx_b += bytes;
 902                 tx_p += packets;
 903                 tx_restart += p->tx_stats.restart_queue;
 904                 tx_busy += p->tx_stats.tx_busy;
 905                 tx_linearize += p->tx_stats.tx_linearize;
 906                 tx_force_wb += p->tx_stats.tx_force_wb;
 907
 908                 /* locate Rx ring */
 909                 p = READ_ONCE(vsi->rx_rings[q]);
 910                 if (!p)
 911                         continue;
 912
 913                 do {
 914                         start = u64_stats_fetch_begin_irq(&p->syncp);
 915                         packets = p->stats.packets;
 916                         bytes = p->stats.bytes;
 917                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 918                 rx_b += bytes;
 919                 rx_p += packets;
 920                 rx_buf += p->rx_stats.alloc_buff_failed;
 921                 rx_page += p->rx_stats.alloc_page_failed;
 922
 923                 if (i40e_enabled_xdp_vsi(vsi)) {
 924                         /* locate XDP ring */
 925                         p = READ_ONCE(vsi->xdp_rings[q]);
 926                         if (!p)
 927                                 continue;
 928
 929                         do {
 930                                 start = u64_stats_fetch_begin_irq(&p->syncp);
 931                                 packets = p->stats.packets;
 932                                 bytes = p->stats.bytes;
 933                         } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 934                         tx_b += bytes;
 935                         tx_p += packets;
 936                         tx_restart += p->tx_stats.restart_queue;
 937                         tx_busy += p->tx_stats.tx_busy;
 938                         tx_linearize += p->tx_stats.tx_linearize;
 939                         tx_force_wb += p->tx_stats.tx_force_wb;
 940                 }
 941         }
 942         rcu_read_unlock();
 943         vsi->tx_restart = tx_restart;
 944         vsi->tx_busy = tx_busy;
 945         vsi->tx_linearize = tx_linearize;
 946         vsi->tx_force_wb = tx_force_wb;
 947         vsi->rx_page_failed = rx_page;
 948         vsi->rx_buf_failed = rx_buf;
 949
 950         ns->rx_packets = rx_p;
 951         ns->rx_bytes = rx_b;
 952         ns->tx_packets = tx_p;
 953         ns->tx_bytes = tx_b;
 954
 955         /* update netdev stats from eth stats */
 956         i40e_update_eth_stats(vsi);
 957         ons->tx_errors = oes->tx_errors;
 958         ns->tx_errors = es->tx_errors;
 959         ons->multicast = oes->rx_multicast;
 960         ns->multicast = es->rx_multicast;
 961         ons->rx_dropped = oes->rx_discards;
 962         ns->rx_dropped = es->rx_discards;
 963         ons->tx_dropped = oes->tx_discards;
 964         ns->tx_dropped = es->tx_discards;
 965
 966         /* pull in a couple PF stats if this is the main vsi */
 967         if (vsi == pf->vsi[pf->lan_vsi]) {
 968                 ns->rx_crc_errors = pf->stats.crc_errors;
 969                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 970                 ns->rx_length_errors = pf->stats.rx_length_errors;
 971         }
 972 }
 973
 974 /**
 975  * i40e_update_pf_stats - Update the PF statistics counters.
 976  * @pf: the PF to be updated
 977  **/
 978 static void i40e_update_pf_stats(struct i40e_pf *pf)
 979 {
 980         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 981         struct i40e_hw_port_stats *nsd = &pf->stats;
 982         struct i40e_hw *hw = &pf->hw;
 983         u32 val;
 984         int i;
 985
 986         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 987                            I40E_GLPRT_GORCL(hw->port),
 988                            pf->stat_offsets_loaded,
 989                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 990         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 991                            I40E_GLPRT_GOTCL(hw->port),
 992                            pf->stat_offsets_loaded,
 993                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 994         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 995                            pf->stat_offsets_loaded,
 996                            &osd->eth.rx_discards,
 997                            &nsd->eth.rx_discards);
 998         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 999                            I40E_GLPRT_UPRCL(hw->port),
1000                            pf->stat_offsets_loaded,
1001                            &osd->eth.rx_unicast,
1002                            &nsd->eth.rx_unicast);
1003         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
1004                            I40E_GLPRT_MPRCL(hw->port),
1005                            pf->stat_offsets_loaded,
1006                            &osd->eth.rx_multicast,
1007                            &nsd->eth.rx_multicast);
1008         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
1009                            I40E_GLPRT_BPRCL(hw->port),
1010                            pf->stat_offsets_loaded,
1011                            &osd->eth.rx_broadcast,
1012                            &nsd->eth.rx_broadcast);
1013         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
1014                            I40E_GLPRT_UPTCL(hw->port),
1015                            pf->stat_offsets_loaded,
1016                            &osd->eth.tx_unicast,
1017                            &nsd->eth.tx_unicast);
1018         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
1019                            I40E_GLPRT_MPTCL(hw->port),
1020                            pf->stat_offsets_loaded,
1021                            &osd->eth.tx_multicast,
1022                            &nsd->eth.tx_multicast);
1023         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
1024                            I40E_GLPRT_BPTCL(hw->port),
1025                            pf->stat_offsets_loaded,
1026                            &osd->eth.tx_broadcast,
1027                            &nsd->eth.tx_broadcast);
1028
1029         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
1030                            pf->stat_offsets_loaded,
1031                            &osd->tx_dropped_link_down,
1032                            &nsd->tx_dropped_link_down);
1033
1034         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
1035                            pf->stat_offsets_loaded,
1036                            &osd->crc_errors, &nsd->crc_errors);
1037
1038         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
1039                            pf->stat_offsets_loaded,
1040                            &osd->illegal_bytes, &nsd->illegal_bytes);
1041
1042         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
1043                            pf->stat_offsets_loaded,
1044                            &osd->mac_local_faults,
1045                            &nsd->mac_local_faults);
1046         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->mac_remote_faults,
1049                            &nsd->mac_remote_faults);
1050
1051         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
1052                            pf->stat_offsets_loaded,
1053                            &osd->rx_length_errors,
1054                            &nsd->rx_length_errors);
1055
1056         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
1057                            pf->stat_offsets_loaded,
1058                            &osd->link_xon_rx, &nsd->link_xon_rx);
1059         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1060                            pf->stat_offsets_loaded,
1061                            &osd->link_xon_tx, &nsd->link_xon_tx);
1062         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
1063                            pf->stat_offsets_loaded,
1064                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
1065         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1066                            pf->stat_offsets_loaded,
1067                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1068
1069         for (i = 0; i < 8; i++) {
1070                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
1071                                    pf->stat_offsets_loaded,
1072                                    &osd->priority_xoff_rx[i],
1073                                    &nsd->priority_xoff_rx[i]);
1074                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1075                                    pf->stat_offsets_loaded,
1076                                    &osd->priority_xon_rx[i],
1077                                    &nsd->priority_xon_rx[i]);
1078                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1079                                    pf->stat_offsets_loaded,
1080                                    &osd->priority_xon_tx[i],
1081                                    &nsd->priority_xon_tx[i]);
1082                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1083                                    pf->stat_offsets_loaded,
1084                                    &osd->priority_xoff_tx[i],
1085                                    &nsd->priority_xoff_tx[i]);
1086                 i40e_stat_update32(hw,
1087                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1088                                    pf->stat_offsets_loaded,
1089                                    &osd->priority_xon_2_xoff[i],
1090                                    &nsd->priority_xon_2_xoff[i]);
1091         }
1092
1093         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1094                            I40E_GLPRT_PRC64L(hw->port),
1095                            pf->stat_offsets_loaded,
1096                            &osd->rx_size_64, &nsd->rx_size_64);
1097         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1098                            I40E_GLPRT_PRC127L(hw->port),
1099                            pf->stat_offsets_loaded,
1100                            &osd->rx_size_127, &nsd->rx_size_127);
1101         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1102                            I40E_GLPRT_PRC255L(hw->port),
1103                            pf->stat_offsets_loaded,
1104                            &osd->rx_size_255, &nsd->rx_size_255);
1105         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1106                            I40E_GLPRT_PRC511L(hw->port),
1107                            pf->stat_offsets_loaded,
1108                            &osd->rx_size_511, &nsd->rx_size_511);
1109         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1110                            I40E_GLPRT_PRC1023L(hw->port),
1111                            pf->stat_offsets_loaded,
1112                            &osd->rx_size_1023, &nsd->rx_size_1023);
1113         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1114                            I40E_GLPRT_PRC1522L(hw->port),
1115                            pf->stat_offsets_loaded,
1116                            &osd->rx_size_1522, &nsd->rx_size_1522);
1117         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1118                            I40E_GLPRT_PRC9522L(hw->port),
1119                            pf->stat_offsets_loaded,
1120                            &osd->rx_size_big, &nsd->rx_size_big);
1121
1122         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1123                            I40E_GLPRT_PTC64L(hw->port),
1124                            pf->stat_offsets_loaded,
1125                            &osd->tx_size_64, &nsd->tx_size_64);
1126         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1127                            I40E_GLPRT_PTC127L(hw->port),
1128                            pf->stat_offsets_loaded,
1129                            &osd->tx_size_127, &nsd->tx_size_127);
1130         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1131                            I40E_GLPRT_PTC255L(hw->port),
1132                            pf->stat_offsets_loaded,
1133                            &osd->tx_size_255, &nsd->tx_size_255);
1134         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1135                            I40E_GLPRT_PTC511L(hw->port),
1136                            pf->stat_offsets_loaded,
1137                            &osd->tx_size_511, &nsd->tx_size_511);
1138         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1139                            I40E_GLPRT_PTC1023L(hw->port),
1140                            pf->stat_offsets_loaded,
1141                            &osd->tx_size_1023, &nsd->tx_size_1023);
1142         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1143                            I40E_GLPRT_PTC1522L(hw->port),
1144                            pf->stat_offsets_loaded,
1145                            &osd->tx_size_1522, &nsd->tx_size_1522);
1146         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1147                            I40E_GLPRT_PTC9522L(hw->port),
1148                            pf->stat_offsets_loaded,
1149                            &osd->tx_size_big, &nsd->tx_size_big);
1150
1151         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1152                            pf->stat_offsets_loaded,
1153                            &osd->rx_undersize, &nsd->rx_undersize);
1154         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1155                            pf->stat_offsets_loaded,
1156                            &osd->rx_fragments, &nsd->rx_fragments);
1157         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1158                            pf->stat_offsets_loaded,
1159                            &osd->rx_oversize, &nsd->rx_oversize);
1160         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1161                            pf->stat_offsets_loaded,
1162                            &osd->rx_jabber, &nsd->rx_jabber);
1163
1164         /* FDIR stats */
1165         i40e_stat_update_and_clear32(hw,
1166                         I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(hw->pf_id)),
1167                         &nsd->fd_atr_match);
1168         i40e_stat_update_and_clear32(hw,
1169                         I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(hw->pf_id)),
1170                         &nsd->fd_sb_match);
1171         i40e_stat_update_and_clear32(hw,
1172                         I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(hw->pf_id)),
1173                         &nsd->fd_atr_tunnel_match);
1174
1175         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1176         nsd->tx_lpi_status =
1177                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1178                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1179         nsd->rx_lpi_status =
1180                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1181                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1182         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1183                            pf->stat_offsets_loaded,
1184                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1185         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1186                            pf->stat_offsets_loaded,
1187                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1188
1189         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1190             !test_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
1191                 nsd->fd_sb_status = true;
1192         else
1193                 nsd->fd_sb_status = false;
1194
1195         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1196             !test_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state))
1197                 nsd->fd_atr_status = true;
1198         else
1199                 nsd->fd_atr_status = false;
1200
1201         pf->stat_offsets_loaded = true;
1202 }
1203
1204 /**
1205  * i40e_update_stats - Update the various statistics counters.
1206  * @vsi: the VSI to be updated
1207  *
1208  * Update the various stats for this VSI and its related entities.
1209  **/
1210 void i40e_update_stats(struct i40e_vsi *vsi)
1211 {
1212         struct i40e_pf *pf = vsi->back;
1213
1214         if (vsi == pf->vsi[pf->lan_vsi])
1215                 i40e_update_pf_stats(pf);
1216
1217         i40e_update_vsi_stats(vsi);
1218 }
1219
1220 /**
1221  * i40e_count_filters - counts VSI mac filters
1222  * @vsi: the VSI to be searched
1223  *
1224  * Returns count of mac filters
1225  **/
1226 int i40e_count_filters(struct i40e_vsi *vsi)
1227 {
1228         struct i40e_mac_filter *f;
1229         struct hlist_node *h;
1230         int bkt;
1231         int cnt = 0;
1232
1233         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1234                 if (f->state == I40E_FILTER_NEW ||
1235                     f->state == I40E_FILTER_ACTIVE)
1236                         ++cnt;
1237         }
1238
1239         return cnt;
1240 }
1241
1242 /**
1243  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1244  * @vsi: the VSI to be searched
1245  * @macaddr: the MAC address
1246  * @vlan: the vlan
1247  *
1248  * Returns ptr to the filter object or NULL
1249  **/
1250 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1251                                                 const u8 *macaddr, s16 vlan)
1252 {
1253         struct i40e_mac_filter *f;
1254         u64 key;
1255
1256         if (!vsi || !macaddr)
1257                 return NULL;
1258
1259         key = i40e_addr_to_hkey(macaddr);
1260         hash_for_each_possible(vsi->mac_filter_hash, f, hlist, key) {
1261                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1262                     (vlan == f->vlan))
1263                         return f;
1264         }
1265         return NULL;
1266 }
1267
1268 /**
1269  * i40e_find_mac - Find a mac addr in the macvlan filters list
1270  * @vsi: the VSI to be searched
1271  * @macaddr: the MAC address we are searching for
1272  *
1273  * Returns the first filter with the provided MAC address or NULL if
1274  * MAC address was not found
1275  **/
1276 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, const u8 *macaddr)
1277 {
1278         struct i40e_mac_filter *f;
1279         u64 key;
1280
1281         if (!vsi || !macaddr)
1282                 return NULL;
1283
1284         key = i40e_addr_to_hkey(macaddr);
1285         hash_for_each_possible(vsi->mac_filter_hash, f, hlist, key) {
1286                 if ((ether_addr_equal(macaddr, f->macaddr)))
1287                         return f;
1288         }
1289         return NULL;
1290 }
1291
1292 /**
1293  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1294  * @vsi: the VSI to be searched
1295  *
1296  * Returns true if VSI is in vlan mode or false otherwise
1297  **/
1298 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1299 {
1300         /* If we have a PVID, always operate in VLAN mode */
1301         if (vsi->info.pvid)
1302                 return true;
1303
1304         /* We need to operate in VLAN mode whenever we have any filters with
1305          * a VLAN other than I40E_VLAN_ALL. We could check the table each
1306          * time, incurring search cost repeatedly. However, we can notice two
1307          * things:
1308          *
1309          * 1) the only place where we can gain a VLAN filter is in
1310          *    i40e_add_filter.
1311          *
1312          * 2) the only place where filters are actually removed is in
1313          *    i40e_sync_filters_subtask.
1314          *
1315          * Thus, we can simply use a boolean value, has_vlan_filters which we
1316          * will set to true when we add a VLAN filter in i40e_add_filter. Then
1317          * we have to perform the full search after deleting filters in
1318          * i40e_sync_filters_subtask, but we already have to search
1319          * filters here and can perform the check at the same time. This
1320          * results in avoiding embedding a loop for VLAN mode inside another
1321          * loop over all the filters, and should maintain correctness as noted
1322          * above.
1323          */
1324         return vsi->has_vlan_filter;
1325 }
1326
1327 /**
1328  * i40e_correct_mac_vlan_filters - Correct non-VLAN filters if necessary
1329  * @vsi: the VSI to configure
1330  * @tmp_add_list: list of filters ready to be added
1331  * @tmp_del_list: list of filters ready to be deleted
1332  * @vlan_filters: the number of active VLAN filters
1333  *
1334  * Update VLAN=0 and VLAN=-1 (I40E_VLAN_ANY) filters properly so that they
1335  * behave as expected. If we have any active VLAN filters remaining or about
1336  * to be added then we need to update non-VLAN filters to be marked as VLAN=0
1337  * so that they only match against untagged traffic. If we no longer have any
1338  * active VLAN filters, we need to make all non-VLAN filters marked as VLAN=-1
1339  * so that they match against both tagged and untagged traffic. In this way,
1340  * we ensure that we correctly receive the desired traffic. This ensures that
1341  * when we have an active VLAN we will receive only untagged traffic and
1342  * traffic matching active VLANs. If we have no active VLANs then we will
1343  * operate in non-VLAN mode and receive all traffic, tagged or untagged.
1344  *
1345  * Finally, in a similar fashion, this function also corrects filters when
1346  * there is an active PVID assigned to this VSI.
1347  *
1348  * In case of memory allocation failure return -ENOMEM. Otherwise, return 0.
1349  *
1350  * This function is only expected to be called from within
1351  * i40e_sync_vsi_filters.
1352  *
1353  * NOTE: This function expects to be called while under the
1354  * mac_filter_hash_lock
1355  */
1356 static int i40e_correct_mac_vlan_filters(struct i40e_vsi *vsi,
1357                                          struct hlist_head *tmp_add_list,
1358                                          struct hlist_head *tmp_del_list,
1359                                          int vlan_filters)
1360 {
1361         s16 pvid = le16_to_cpu(vsi->info.pvid);
1362         struct i40e_mac_filter *f, *add_head;
1363         struct i40e_new_mac_filter *new;
1364         struct hlist_node *h;
1365         int bkt, new_vlan;
1366
1367         /* To determine if a particular filter needs to be replaced we
1368          * have the three following conditions:
1369          *
1370          * a) if we have a PVID assigned, then all filters which are
1371          *    not marked as VLAN=PVID must be replaced with filters that
1372          *    are.
1373          * b) otherwise, if we have any active VLANS, all filters
1374          *    which are marked as VLAN=-1 must be replaced with
1375          *    filters marked as VLAN=0
1376          * c) finally, if we do not have any active VLANS, all filters
1377          *    which are marked as VLAN=0 must be replaced with filters
1378          *    marked as VLAN=-1
1379          */
1380
1381         /* Update the filters about to be added in place */
1382         hlist_for_each_entry(new, tmp_add_list, hlist) {
1383                 if (pvid && new->f->vlan != pvid)
1384                         new->f->vlan = pvid;
1385                 else if (vlan_filters && new->f->vlan == I40E_VLAN_ANY)
1386                         new->f->vlan = 0;
1387                 else if (!vlan_filters && new->f->vlan == 0)
1388                         new->f->vlan = I40E_VLAN_ANY;
1389         }
1390
1391         /* Update the remaining active filters */
1392         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1393                 /* Combine the checks for whether a filter needs to be changed
1394                  * and then determine the new VLAN inside the if block, in
1395                  * order to avoid duplicating code for adding the new filter
1396                  * then deleting the old filter.
1397                  */
1398                 if ((pvid && f->vlan != pvid) ||
1399                     (vlan_filters && f->vlan == I40E_VLAN_ANY) ||
1400                     (!vlan_filters && f->vlan == 0)) {
1401                         /* Determine the new vlan we will be adding */
1402                         if (pvid)
1403                                 new_vlan = pvid;
1404                         else if (vlan_filters)
1405                                 new_vlan = 0;
1406                         else
1407                                 new_vlan = I40E_VLAN_ANY;
1408
1409                         /* Create the new filter */
1410                         add_head = i40e_add_filter(vsi, f->macaddr, new_vlan);
1411                         if (!add_head)
1412                                 return -ENOMEM;
1413
1414                         /* Create a temporary i40e_new_mac_filter */
1415                         new = kzalloc(sizeof(*new), GFP_ATOMIC);
1416                         if (!new)
1417                                 return -ENOMEM;
1418
1419                         new->f = add_head;
1420                         new->state = add_head->state;
1421
1422                         /* Add the new filter to the tmp list */
1423                         hlist_add_head(&new->hlist, tmp_add_list);
1424
1425                         /* Put the original filter into the delete list */
1426                         f->state = I40E_FILTER_REMOVE;
1427                         hash_del(&f->hlist);
1428                         hlist_add_head(&f->hlist, tmp_del_list);
1429                 }
1430         }
1431
1432         vsi->has_vlan_filter = !!vlan_filters;
1433
1434         return 0;
1435 }
1436
1437 /**
1438  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1439  * @vsi: the PF Main VSI - inappropriate for any other VSI
1440  * @macaddr: the MAC address
1441  *
1442  * Remove whatever filter the firmware set up so the driver can manage
1443  * its own filtering intelligently.
1444  **/
1445 static void i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1446 {
1447         struct i40e_aqc_remove_macvlan_element_data element;
1448         struct i40e_pf *pf = vsi->back;
1449
1450         /* Only appropriate for the PF main VSI */
1451         if (vsi->type != I40E_VSI_MAIN)
1452                 return;
1453
1454         memset(&element, 0, sizeof(element));
1455         ether_addr_copy(element.mac_addr, macaddr);
1456         element.vlan_tag = 0;
1457         /* Ignore error returns, some firmware does it this way... */
1458         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1459         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1460
1461         memset(&element, 0, sizeof(element));
1462         ether_addr_copy(element.mac_addr, macaddr);
1463         element.vlan_tag = 0;
1464         /* ...and some firmware does it this way. */
1465         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1466                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1467         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1468 }
1469
1470 /**
1471  * i40e_add_filter - Add a mac/vlan filter to the VSI
1472  * @vsi: the VSI to be searched
1473  * @macaddr: the MAC address
1474  * @vlan: the vlan
1475  *
1476  * Returns ptr to the filter object or NULL when no memory available.
1477  *
1478  * NOTE: This function is expected to be called with mac_filter_hash_lock
1479  * being held.
1480  **/
1481 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1482                                         const u8 *macaddr, s16 vlan)
1483 {
1484         struct i40e_mac_filter *f;
1485         u64 key;
1486
1487         if (!vsi || !macaddr)
1488                 return NULL;
1489
1490         f = i40e_find_filter(vsi, macaddr, vlan);
1491         if (!f) {
1492                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1493                 if (!f)
1494                         return NULL;
1495
1496                 /* Update the boolean indicating if we need to function in
1497                  * VLAN mode.
1498                  */
1499                 if (vlan >= 0)
1500                         vsi->has_vlan_filter = true;
1501
1502                 ether_addr_copy(f->macaddr, macaddr);
1503                 f->vlan = vlan;
1504                 f->state = I40E_FILTER_NEW;
1505                 INIT_HLIST_NODE(&f->hlist);
1506
1507                 key = i40e_addr_to_hkey(macaddr);
1508                 hash_add(vsi->mac_filter_hash, &f->hlist, key);
1509
1510                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1511                 set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state);
1512         }
1513
1514         /* If we're asked to add a filter that has been marked for removal, it
1515          * is safe to simply restore it to active state. __i40e_del_filter
1516          * will have simply deleted any filters which were previously marked
1517          * NEW or FAILED, so if it is currently marked REMOVE it must have
1518          * previously been ACTIVE. Since we haven't yet run the sync filters
1519          * task, just restore this filter to the ACTIVE state so that the
1520          * sync task leaves it in place
1521          */
1522         if (f->state == I40E_FILTER_REMOVE)
1523                 f->state = I40E_FILTER_ACTIVE;
1524
1525         return f;
1526 }
1527
1528 /**
1529  * __i40e_del_filter - Remove a specific filter from the VSI
1530  * @vsi: VSI to remove from
1531  * @f: the filter to remove from the list
1532  *
1533  * This function should be called instead of i40e_del_filter only if you know
1534  * the exact filter you will remove already, such as via i40e_find_filter or
1535  * i40e_find_mac.
1536  *
1537  * NOTE: This function is expected to be called with mac_filter_hash_lock
1538  * being held.
1539  * ANOTHER NOTE: This function MUST be called from within the context of
1540  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1541  * instead of list_for_each_entry().
1542  **/
1543 void __i40e_del_filter(struct i40e_vsi *vsi, struct i40e_mac_filter *f)
1544 {
1545         if (!f)
1546                 return;
1547
1548         /* If the filter was never added to firmware then we can just delete it
1549          * directly and we don't want to set the status to remove or else an
1550          * admin queue command will unnecessarily fire.
1551          */
1552         if ((f->state == I40E_FILTER_FAILED) ||
1553             (f->state == I40E_FILTER_NEW)) {
1554                 hash_del(&f->hlist);
1555                 kfree(f);
1556         } else {
1557                 f->state = I40E_FILTER_REMOVE;
1558         }
1559
1560         vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1561         set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state);
1562 }
1563
1564 /**
1565  * i40e_del_filter - Remove a MAC/VLAN filter from the VSI
1566  * @vsi: the VSI to be searched
1567  * @macaddr: the MAC address
1568  * @vlan: the VLAN
1569  *
1570  * NOTE: This function is expected to be called with mac_filter_hash_lock
1571  * being held.
1572  * ANOTHER NOTE: This function MUST be called from within the context of
1573  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1574  * instead of list_for_each_entry().
1575  **/
1576 void i40e_del_filter(struct i40e_vsi *vsi, const u8 *macaddr, s16 vlan)
1577 {
1578         struct i40e_mac_filter *f;
1579
1580         if (!vsi || !macaddr)
1581                 return;
1582
1583         f = i40e_find_filter(vsi, macaddr, vlan);
1584         __i40e_del_filter(vsi, f);
1585 }
1586
1587 /**
1588  * i40e_add_mac_filter - Add a MAC filter for all active VLANs
1589  * @vsi: the VSI to be searched
1590  * @macaddr: the mac address to be filtered
1591  *
1592  * If we're not in VLAN mode, just add the filter to I40E_VLAN_ANY. Otherwise,
1593  * go through all the macvlan filters and add a macvlan filter for each
1594  * unique vlan that already exists. If a PVID has been assigned, instead only
1595  * add the macaddr to that VLAN.
1596  *
1597  * Returns last filter added on success, else NULL
1598  **/
1599 struct i40e_mac_filter *i40e_add_mac_filter(struct i40e_vsi *vsi,
1600                                             const u8 *macaddr)
1601 {
1602         struct i40e_mac_filter *f, *add = NULL;
1603         struct hlist_node *h;
1604         int bkt;
1605
1606         if (vsi->info.pvid)
1607                 return i40e_add_filter(vsi, macaddr,
1608                                        le16_to_cpu(vsi->info.pvid));
1609
1610         if (!i40e_is_vsi_in_vlan(vsi))
1611                 return i40e_add_filter(vsi, macaddr, I40E_VLAN_ANY);
1612
1613         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1614                 if (f->state == I40E_FILTER_REMOVE)
1615                         continue;
1616                 add = i40e_add_filter(vsi, macaddr, f->vlan);
1617                 if (!add)
1618                         return NULL;
1619         }
1620
1621         return add;
1622 }
1623
1624 /**
1625  * i40e_del_mac_filter - Remove a MAC filter from all VLANs
1626  * @vsi: the VSI to be searched
1627  * @macaddr: the mac address to be removed
1628  *
1629  * Removes a given MAC address from a VSI regardless of what VLAN it has been
1630  * associated with.
1631  *
1632  * Returns 0 for success, or error
1633  **/
1634 int i40e_del_mac_filter(struct i40e_vsi *vsi, const u8 *macaddr)
1635 {
1636         struct i40e_mac_filter *f;
1637         struct hlist_node *h;
1638         bool found = false;
1639         int bkt;
1640
1641         lockdep_assert_held(&vsi->mac_filter_hash_lock);
1642         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1643                 if (ether_addr_equal(macaddr, f->macaddr)) {
1644                         __i40e_del_filter(vsi, f);
1645                         found = true;
1646                 }
1647         }
1648
1649         if (found)
1650                 return 0;
1651         else
1652                 return -ENOENT;
1653 }
1654
1655 /**
1656  * i40e_set_mac - NDO callback to set mac address
1657  * @netdev: network interface device structure
1658  * @p: pointer to an address structure
1659  *
1660  * Returns 0 on success, negative on failure
1661  **/
1662 static int i40e_set_mac(struct net_device *netdev, void *p)
1663 {
1664         struct i40e_netdev_priv *np = netdev_priv(netdev);
1665         struct i40e_vsi *vsi = np->vsi;
1666         struct i40e_pf *pf = vsi->back;
1667         struct i40e_hw *hw = &pf->hw;
1668         struct sockaddr *addr = p;
1669
1670         if (!is_valid_ether_addr(addr->sa_data))
1671                 return -EADDRNOTAVAIL;
1672
1673         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1674                 netdev_info(netdev, "already using mac address %pM\n",
1675                             addr->sa_data);
1676                 return 0;
1677         }
1678
1679         if (test_bit(__I40E_DOWN, pf->state) ||
1680             test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
1681                 return -EADDRNOTAVAIL;
1682
1683         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1684                 netdev_info(netdev, "returning to hw mac address %pM\n",
1685                             hw->mac.addr);
1686         else
1687                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1688
1689         /* Copy the address first, so that we avoid a possible race with
1690          * .set_rx_mode().
1691          * - Remove old address from MAC filter
1692          * - Copy new address
1693          * - Add new address to MAC filter
1694          */
1695         spin_lock_bh(&vsi->mac_filter_hash_lock);
1696         i40e_del_mac_filter(vsi, netdev->dev_addr);
1697         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1698         i40e_add_mac_filter(vsi, netdev->dev_addr);
1699         spin_unlock_bh(&vsi->mac_filter_hash_lock);
1700
1701         if (vsi->type == I40E_VSI_MAIN) {
1702                 i40e_status ret;
1703
1704                 ret = i40e_aq_mac_address_write(hw, I40E_AQC_WRITE_TYPE_LAA_WOL,
1705                                                 addr->sa_data, NULL);
1706                 if (ret)
1707                         netdev_info(netdev, "Ignoring error from firmware on LAA update, status %s, AQ ret %s\n",
1708                                     i40e_stat_str(hw, ret),
1709                                     i40e_aq_str(hw, hw->aq.asq_last_status));
1710         }
1711
1712         /* schedule our worker thread which will take care of
1713          * applying the new filter changes
1714          */
1715         i40e_service_event_schedule(pf);
1716         return 0;
1717 }
1718
1719 /**
1720  * i40e_config_rss_aq - Prepare for RSS using AQ commands
1721  * @vsi: vsi structure
1722  * @seed: RSS hash seed
1723  * @lut: pointer to lookup table of lut_size
1724  * @lut_size: size of the lookup table
1725  **/
1726 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
1727                               u8 *lut, u16 lut_size)
1728 {
1729         struct i40e_pf *pf = vsi->back;
1730         struct i40e_hw *hw = &pf->hw;
1731         int ret = 0;
1732
1733         if (seed) {
1734                 struct i40e_aqc_get_set_rss_key_data *seed_dw =
1735                         (struct i40e_aqc_get_set_rss_key_data *)seed;
1736                 ret = i40e_aq_set_rss_key(hw, vsi->id, seed_dw);
1737                 if (ret) {
1738                         dev_info(&pf->pdev->dev,
1739                                  "Cannot set RSS key, err %s aq_err %s\n",
1740                                  i40e_stat_str(hw, ret),
1741                                  i40e_aq_str(hw, hw->aq.asq_last_status));
1742                         return ret;
1743                 }
1744         }
1745         if (lut) {
1746                 bool pf_lut = vsi->type == I40E_VSI_MAIN;
1747
1748                 ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
1749                 if (ret) {
1750                         dev_info(&pf->pdev->dev,
1751                                  "Cannot set RSS lut, err %s aq_err %s\n",
1752                                  i40e_stat_str(hw, ret),
1753                                  i40e_aq_str(hw, hw->aq.asq_last_status));
1754                         return ret;
1755                 }
1756         }
1757         return ret;
1758 }
1759
1760 /**
1761  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
1762  * @vsi: VSI structure
1763  **/
1764 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
1765 {
1766         struct i40e_pf *pf = vsi->back;
1767         u8 seed[I40E_HKEY_ARRAY_SIZE];
1768         u8 *lut;
1769         int ret;
1770
1771         if (!(pf->hw_features & I40E_HW_RSS_AQ_CAPABLE))
1772                 return 0;
1773         if (!vsi->rss_size)
1774                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
1775                                       vsi->num_queue_pairs);
1776         if (!vsi->rss_size)
1777                 return -EINVAL;
1778         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
1779         if (!lut)
1780                 return -ENOMEM;
1781
1782         /* Use the user configured hash keys and lookup table if there is one,
1783          * otherwise use default
1784          */
1785         if (vsi->rss_lut_user)
1786                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
1787         else
1788                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
1789         if (vsi->rss_hkey_user)
1790                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
1791         else
1792                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
1793         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
1794         kfree(lut);
1795         return ret;
1796 }
1797
1798 /**
1799  * i40e_vsi_setup_queue_map_mqprio - Prepares mqprio based tc_config
1800  * @vsi: the VSI being configured,
1801  * @ctxt: VSI context structure
1802  * @enabled_tc: number of traffic classes to enable
1803  *
1804  * Prepares VSI tc_config to have queue configurations based on MQPRIO options.
1805  **/
1806 static int i40e_vsi_setup_queue_map_mqprio(struct i40e_vsi *vsi,
1807                                            struct i40e_vsi_context *ctxt,
1808                                            u8 enabled_tc)
1809 {
1810         u16 qcount = 0, max_qcount, qmap, sections = 0;
1811         int i, override_q, pow, num_qps, ret;
1812         u8 netdev_tc = 0, offset = 0;
1813
1814         if (vsi->type != I40E_VSI_MAIN)
1815                 return -EINVAL;
1816         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1817         sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1818         vsi->tc_config.numtc = vsi->mqprio_qopt.qopt.num_tc;
1819         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1820         num_qps = vsi->mqprio_qopt.qopt.count[0];
1821
1822         /* find the next higher power-of-2 of num queue pairs */
1823         pow = ilog2(num_qps);
1824         if (!is_power_of_2(num_qps))
1825                 pow++;
1826         qmap = (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1827                 (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1828
1829         /* Setup queue offset/count for all TCs for given VSI */
1830         max_qcount = vsi->mqprio_qopt.qopt.count[0];
1831         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1832                 /* See if the given TC is enabled for the given VSI */
1833                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1834                         offset = vsi->mqprio_qopt.qopt.offset[i];
1835                         qcount = vsi->mqprio_qopt.qopt.count[i];
1836                         if (qcount > max_qcount)
1837                                 max_qcount = qcount;
1838                         vsi->tc_config.tc_info[i].qoffset = offset;
1839                         vsi->tc_config.tc_info[i].qcount = qcount;
1840                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1841                 } else {
1842                         /* TC is not enabled so set the offset to
1843                          * default queue and allocate one queue
1844                          * for the given TC.
1845                          */
1846                         vsi->tc_config.tc_info[i].qoffset = 0;
1847                         vsi->tc_config.tc_info[i].qcount = 1;
1848                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1849                 }
1850         }
1851
1852         /* Set actual Tx/Rx queue pairs */
1853         vsi->num_queue_pairs = offset + qcount;
1854
1855         /* Setup queue TC[0].qmap for given VSI context */
1856         ctxt->info.tc_mapping[0] = cpu_to_le16(qmap);
1857         ctxt->info.mapping_flags |= cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1858         ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1859         ctxt->info.valid_sections |= cpu_to_le16(sections);
1860
1861         /* Reconfigure RSS for main VSI with max queue count */
1862         vsi->rss_size = max_qcount;
1863         ret = i40e_vsi_config_rss(vsi);
1864         if (ret) {
1865                 dev_info(&vsi->back->pdev->dev,
1866                          "Failed to reconfig rss for num_queues (%u)\n",
1867                          max_qcount);
1868                 return ret;
1869         }
1870         vsi->reconfig_rss = true;
1871         dev_dbg(&vsi->back->pdev->dev,
1872                 "Reconfigured rss with num_queues (%u)\n", max_qcount);
1873
1874         /* Find queue count available for channel VSIs and starting offset
1875          * for channel VSIs
1876          */
1877         override_q = vsi->mqprio_qopt.qopt.count[0];
1878         if (override_q && override_q < vsi->num_queue_pairs) {
1879                 vsi->cnt_q_avail = vsi->num_queue_pairs - override_q;
1880                 vsi->next_base_queue = override_q;
1881         }
1882         return 0;
1883 }
1884
1885 /**
1886  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1887  * @vsi: the VSI being setup
1888  * @ctxt: VSI context structure
1889  * @enabled_tc: Enabled TCs bitmap
1890  * @is_add: True if called before Add VSI
1891  *
1892  * Setup VSI queue mapping for enabled traffic classes.
1893  **/
1894 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1895                                      struct i40e_vsi_context *ctxt,
1896                                      u8 enabled_tc,
1897                                      bool is_add)
1898 {
1899         struct i40e_pf *pf = vsi->back;
1900         u16 num_tc_qps = 0;
1901         u16 sections = 0;
1902         u8 netdev_tc = 0;
1903         u16 numtc = 1;
1904         u16 qcount;
1905         u8 offset;
1906         u16 qmap;
1907         int i;
1908
1909         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1910         offset = 0;
1911         /* zero out queue mapping, it will get updated on the end of the function */
1912         memset(ctxt->info.queue_mapping, 0, sizeof(ctxt->info.queue_mapping));
1913
1914         if (vsi->type == I40E_VSI_MAIN) {
1915                 /* This code helps add more queue to the VSI if we have
1916                  * more cores than RSS can support, the higher cores will
1917                  * be served by ATR or other filters. Furthermore, the
1918                  * non-zero req_queue_pairs says that user requested a new
1919                  * queue count via ethtool's set_channels, so use this
1920                  * value for queues distribution across traffic classes
1921                  * We need at least one queue pair for the interface
1922                  * to be usable as we see in else statement.
1923                  */
1924                 if (vsi->req_queue_pairs > 0)
1925                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1926                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1927                         vsi->num_queue_pairs = pf->num_lan_msix;
1928                 else
1929                         vsi->num_queue_pairs = 1;
1930         }
1931
1932         /* Number of queues per enabled TC */
1933         if (vsi->type == I40E_VSI_MAIN ||
1934             (vsi->type == I40E_VSI_SRIOV && vsi->num_queue_pairs != 0))
1935                 num_tc_qps = vsi->num_queue_pairs;
1936         else
1937                 num_tc_qps = vsi->alloc_queue_pairs;
1938
1939         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1940                 /* Find numtc from enabled TC bitmap */
1941                 for (i = 0, numtc = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1942                         if (enabled_tc & BIT(i)) /* TC is enabled */
1943                                 numtc++;
1944                 }
1945                 if (!numtc) {
1946                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1947                         numtc = 1;
1948                 }
1949                 num_tc_qps = num_tc_qps / numtc;
1950                 num_tc_qps = min_t(int, num_tc_qps,
1951                                    i40e_pf_get_max_q_per_tc(pf));
1952         }
1953
1954         vsi->tc_config.numtc = numtc;
1955         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1956
1957         /* Do not allow use more TC queue pairs than MSI-X vectors exist */
1958         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1959                 num_tc_qps = min_t(int, num_tc_qps, pf->num_lan_msix);
1960
1961         /* Setup queue offset/count for all TCs for given VSI */
1962         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1963                 /* See if the given TC is enabled for the given VSI */
1964                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1965                         /* TC is enabled */
1966                         int pow, num_qps;
1967
1968                         switch (vsi->type) {
1969                         case I40E_VSI_MAIN:
1970                                 if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED |
1971                                     I40E_FLAG_FD_ATR_ENABLED)) ||
1972                                     vsi->tc_config.enabled_tc != 1) {
1973                                         qcount = min_t(int, pf->alloc_rss_size,
1974                                                        num_tc_qps);
1975                                         break;
1976                                 }
1977                                 fallthrough;
1978                         case I40E_VSI_FDIR:
1979                         case I40E_VSI_SRIOV:
1980                         case I40E_VSI_VMDQ2:
1981                         default:
1982                                 qcount = num_tc_qps;
1983                                 WARN_ON(i != 0);
1984                                 break;
1985                         }
1986                         vsi->tc_config.tc_info[i].qoffset = offset;
1987                         vsi->tc_config.tc_info[i].qcount = qcount;
1988
1989                         /* find the next higher power-of-2 of num queue pairs */
1990                         num_qps = qcount;
1991                         pow = 0;
1992                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1993                                 pow++;
1994                                 num_qps >>= 1;
1995                         }
1996
1997                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1998                         qmap =
1999                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
2000                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
2001
2002                         offset += qcount;
2003                 } else {
2004                         /* TC is not enabled so set the offset to
2005                          * default queue and allocate one queue
2006                          * for the given TC.
2007                          */
2008                         vsi->tc_config.tc_info[i].qoffset = 0;
2009                         vsi->tc_config.tc_info[i].qcount = 1;
2010                         vsi->tc_config.tc_info[i].netdev_tc = 0;
2011
2012                         qmap = 0;
2013                 }
2014                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
2015         }
2016         /* Do not change previously set num_queue_pairs for PFs and VFs*/
2017         if ((vsi->type == I40E_VSI_MAIN && numtc != 1) ||
2018             (vsi->type == I40E_VSI_SRIOV && vsi->num_queue_pairs == 0) ||
2019             (vsi->type != I40E_VSI_MAIN && vsi->type != I40E_VSI_SRIOV))
2020                 vsi->num_queue_pairs = offset;
2021
2022         /* Scheduler section valid can only be set for ADD VSI */
2023         if (is_add) {
2024                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
2025
2026                 ctxt->info.up_enable_bits = enabled_tc;
2027         }
2028         if (vsi->type == I40E_VSI_SRIOV) {
2029                 ctxt->info.mapping_flags |=
2030                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
2031                 for (i = 0; i < vsi->num_queue_pairs; i++)
2032                         ctxt->info.queue_mapping[i] =
2033                                                cpu_to_le16(vsi->base_queue + i);
2034         } else {
2035                 ctxt->info.mapping_flags |=
2036                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
2037                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
2038         }
2039         ctxt->info.valid_sections |= cpu_to_le16(sections);
2040 }
2041
2042 /**
2043  * i40e_addr_sync - Callback for dev_(mc|uc)_sync to add address
2044  * @netdev: the netdevice
2045  * @addr: address to add
2046  *
2047  * Called by __dev_(mc|uc)_sync when an address needs to be added. We call
2048  * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
2049  */
2050 static int i40e_addr_sync(struct net_device *netdev, const u8 *addr)
2051 {
2052         struct i40e_netdev_priv *np = netdev_priv(netdev);
2053         struct i40e_vsi *vsi = np->vsi;
2054
2055         if (i40e_add_mac_filter(vsi, addr))
2056                 return 0;
2057         else
2058                 return -ENOMEM;
2059 }
2060
2061 /**
2062  * i40e_addr_unsync - Callback for dev_(mc|uc)_sync to remove address
2063  * @netdev: the netdevice
2064  * @addr: address to add
2065  *
2066  * Called by __dev_(mc|uc)_sync when an address needs to be removed. We call
2067  * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
2068  */
2069 static int i40e_addr_unsync(struct net_device *netdev, const u8 *addr)
2070 {
2071         struct i40e_netdev_priv *np = netdev_priv(netdev);
2072         struct i40e_vsi *vsi = np->vsi;
2073
2074         /* Under some circumstances, we might receive a request to delete
2075          * our own device address from our uc list. Because we store the
2076          * device address in the VSI's MAC/VLAN filter list, we need to ignore
2077          * such requests and not delete our device address from this list.
2078          */
2079         if (ether_addr_equal(addr, netdev->dev_addr))
2080                 return 0;
2081
2082         i40e_del_mac_filter(vsi, addr);
2083
2084         return 0;
2085 }
2086
2087 /**
2088  * i40e_set_rx_mode - NDO callback to set the netdev filters
2089  * @netdev: network interface device structure
2090  **/
2091 static void i40e_set_rx_mode(struct net_device *netdev)
2092 {
2093         struct i40e_netdev_priv *np = netdev_priv(netdev);
2094         struct i40e_vsi *vsi = np->vsi;
2095
2096         spin_lock_bh(&vsi->mac_filter_hash_lock);
2097
2098         __dev_uc_sync(netdev, i40e_addr_sync, i40e_addr_unsync);
2099         __dev_mc_sync(netdev, i40e_addr_sync, i40e_addr_unsync);
2100
2101         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2102
2103         /* check for other flag changes */
2104         if (vsi->current_netdev_flags != vsi->netdev->flags) {
2105                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2106                 set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state);
2107         }
2108 }
2109
2110 /**
2111  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
2112  * @vsi: Pointer to VSI struct
2113  * @from: Pointer to list which contains MAC filter entries - changes to
2114  *        those entries needs to be undone.
2115  *
2116  * MAC filter entries from this list were slated for deletion.
2117  **/
2118 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
2119                                          struct hlist_head *from)
2120 {
2121         struct i40e_mac_filter *f;
2122         struct hlist_node *h;
2123
2124         hlist_for_each_entry_safe(f, h, from, hlist) {
2125                 u64 key = i40e_addr_to_hkey(f->macaddr);
2126
2127                 /* Move the element back into MAC filter list*/
2128                 hlist_del(&f->hlist);
2129                 hash_add(vsi->mac_filter_hash, &f->hlist, key);
2130         }
2131 }
2132
2133 /**
2134  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
2135  * @vsi: Pointer to vsi struct
2136  * @from: Pointer to list which contains MAC filter entries - changes to
2137  *        those entries needs to be undone.
2138  *
2139  * MAC filter entries from this list were slated for addition.
2140  **/
2141 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi,
2142                                          struct hlist_head *from)
2143 {
2144         struct i40e_new_mac_filter *new;
2145         struct hlist_node *h;
2146
2147         hlist_for_each_entry_safe(new, h, from, hlist) {
2148                 /* We can simply free the wrapper structure */
2149                 hlist_del(&new->hlist);
2150                 netdev_hw_addr_refcnt(new->f, vsi->netdev, -1);
2151                 kfree(new);
2152         }
2153 }
2154
2155 /**
2156  * i40e_next_entry - Get the next non-broadcast filter from a list
2157  * @next: pointer to filter in list
2158  *
2159  * Returns the next non-broadcast filter in the list. Required so that we
2160  * ignore broadcast filters within the list, since these are not handled via
2161  * the normal firmware update path.
2162  */
2163 static
2164 struct i40e_new_mac_filter *i40e_next_filter(struct i40e_new_mac_filter *next)
2165 {
2166         hlist_for_each_entry_continue(next, hlist) {
2167                 if (!is_broadcast_ether_addr(next->f->macaddr))
2168                         return next;
2169         }
2170
2171         return NULL;
2172 }
2173
2174 /**
2175  * i40e_update_filter_state - Update filter state based on return data
2176  * from firmware
2177  * @count: Number of filters added
2178  * @add_list: return data from fw
2179  * @add_head: pointer to first filter in current batch
2180  *
2181  * MAC filter entries from list were slated to be added to device. Returns
2182  * number of successful filters. Note that 0 does NOT mean success!
2183  **/
2184 static int
2185 i40e_update_filter_state(int count,
2186                          struct i40e_aqc_add_macvlan_element_data *add_list,
2187                          struct i40e_new_mac_filter *add_head)
2188 {
2189         int retval = 0;
2190         int i;
2191
2192         for (i = 0; i < count; i++) {
2193                 /* Always check status of each filter. We don't need to check
2194                  * the firmware return status because we pre-set the filter
2195                  * status to I40E_AQC_MM_ERR_NO_RES when sending the filter
2196                  * request to the adminq. Thus, if it no longer matches then
2197                  * we know the filter is active.
2198                  */
2199                 if (add_list[i].match_method == I40E_AQC_MM_ERR_NO_RES) {
2200                         add_head->state = I40E_FILTER_FAILED;
2201                 } else {
2202                         add_head->state = I40E_FILTER_ACTIVE;
2203                         retval++;
2204                 }
2205
2206                 add_head = i40e_next_filter(add_head);
2207                 if (!add_head)
2208                         break;
2209         }
2210
2211         return retval;
2212 }
2213
2214 /**
2215  * i40e_aqc_del_filters - Request firmware to delete a set of filters
2216  * @vsi: ptr to the VSI
2217  * @vsi_name: name to display in messages
2218  * @list: the list of filters to send to firmware
2219  * @num_del: the number of filters to delete
2220  * @retval: Set to -EIO on failure to delete
2221  *
2222  * Send a request to firmware via AdminQ to delete a set of filters. Uses
2223  * *retval instead of a return value so that success does not force ret_val to
2224  * be set to 0. This ensures that a sequence of calls to this function
2225  * preserve the previous value of *retval on successful delete.
2226  */
2227 static
2228 void i40e_aqc_del_filters(struct i40e_vsi *vsi, const char *vsi_name,
2229                           struct i40e_aqc_remove_macvlan_element_data *list,
2230                           int num_del, int *retval)
2231 {
2232         struct i40e_hw *hw = &vsi->back->hw;
2233         i40e_status aq_ret;
2234         int aq_err;
2235
2236         aq_ret = i40e_aq_remove_macvlan(hw, vsi->seid, list, num_del, NULL);
2237         aq_err = hw->aq.asq_last_status;
2238
2239         /* Explicitly ignore and do not report when firmware returns ENOENT */
2240         if (aq_ret && !(aq_err == I40E_AQ_RC_ENOENT)) {
2241                 *retval = -EIO;
2242                 dev_info(&vsi->back->pdev->dev,
2243                          "ignoring delete macvlan error on %s, err %s, aq_err %s\n",
2244                          vsi_name, i40e_stat_str(hw, aq_ret),
2245                          i40e_aq_str(hw, aq_err));
2246         }
2247 }
2248
2249 /**
2250  * i40e_aqc_add_filters - Request firmware to add a set of filters
2251  * @vsi: ptr to the VSI
2252  * @vsi_name: name to display in messages
2253  * @list: the list of filters to send to firmware
2254  * @add_head: Position in the add hlist
2255  * @num_add: the number of filters to add
2256  *
2257  * Send a request to firmware via AdminQ to add a chunk of filters. Will set
2258  * __I40E_VSI_OVERFLOW_PROMISC bit in vsi->state if the firmware has run out of
2259  * space for more filters.
2260  */
2261 static
2262 void i40e_aqc_add_filters(struct i40e_vsi *vsi, const char *vsi_name,
2263                           struct i40e_aqc_add_macvlan_element_data *list,
2264                           struct i40e_new_mac_filter *add_head,
2265                           int num_add)
2266 {
2267         struct i40e_hw *hw = &vsi->back->hw;
2268         int aq_err, fcnt;
2269
2270         i40e_aq_add_macvlan(hw, vsi->seid, list, num_add, NULL);
2271         aq_err = hw->aq.asq_last_status;
2272         fcnt = i40e_update_filter_state(num_add, list, add_head);
2273
2274         if (fcnt != num_add) {
2275                 if (vsi->type == I40E_VSI_MAIN) {
2276                         set_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2277                         dev_warn(&vsi->back->pdev->dev,
2278                                  "Error %s adding RX filters on %s, promiscuous mode forced on\n",
2279                                  i40e_aq_str(hw, aq_err), vsi_name);
2280                 } else if (vsi->type == I40E_VSI_SRIOV ||
2281                            vsi->type == I40E_VSI_VMDQ1 ||
2282                            vsi->type == I40E_VSI_VMDQ2) {
2283                         dev_warn(&vsi->back->pdev->dev,
2284                                  "Error %s adding RX filters on %s, please set promiscuous on manually for %s\n",
2285                                  i40e_aq_str(hw, aq_err), vsi_name, vsi_name);
2286                 } else {
2287                         dev_warn(&vsi->back->pdev->dev,
2288                                  "Error %s adding RX filters on %s, incorrect VSI type: %i.\n",
2289                                  i40e_aq_str(hw, aq_err), vsi_name, vsi->type);
2290                 }
2291         }
2292 }
2293
2294 /**
2295  * i40e_aqc_broadcast_filter - Set promiscuous broadcast flags
2296  * @vsi: pointer to the VSI
2297  * @vsi_name: the VSI name
2298  * @f: filter data
2299  *
2300  * This function sets or clears the promiscuous broadcast flags for VLAN
2301  * filters in order to properly receive broadcast frames. Assumes that only
2302  * broadcast filters are passed.
2303  *
2304  * Returns status indicating success or failure;
2305  **/
2306 static i40e_status
2307 i40e_aqc_broadcast_filter(struct i40e_vsi *vsi, const char *vsi_name,
2308                           struct i40e_mac_filter *f)
2309 {
2310         bool enable = f->state == I40E_FILTER_NEW;
2311         struct i40e_hw *hw = &vsi->back->hw;
2312         i40e_status aq_ret;
2313
2314         if (f->vlan == I40E_VLAN_ANY) {
2315                 aq_ret = i40e_aq_set_vsi_broadcast(hw,
2316                                                    vsi->seid,
2317                                                    enable,
2318                                                    NULL);
2319         } else {
2320                 aq_ret = i40e_aq_set_vsi_bc_promisc_on_vlan(hw,
2321                                                             vsi->seid,
2322                                                             enable,
2323                                                             f->vlan,
2324                                                             NULL);
2325         }
2326
2327         if (aq_ret) {
2328                 set_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2329                 dev_warn(&vsi->back->pdev->dev,
2330                          "Error %s, forcing overflow promiscuous on %s\n",
2331                          i40e_aq_str(hw, hw->aq.asq_last_status),
2332                          vsi_name);
2333         }
2334
2335         return aq_ret;
2336 }
2337
2338 /**
2339  * i40e_set_promiscuous - set promiscuous mode
2340  * @pf: board private structure
2341  * @promisc: promisc on or off
2342  *
2343  * There are different ways of setting promiscuous mode on a PF depending on
2344  * what state/environment we're in.  This identifies and sets it appropriately.
2345  * Returns 0 on success.
2346  **/
2347 static int i40e_set_promiscuous(struct i40e_pf *pf, bool promisc)
2348 {
2349         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
2350         struct i40e_hw *hw = &pf->hw;
2351         i40e_status aq_ret;
2352
2353         if (vsi->type == I40E_VSI_MAIN &&
2354             pf->lan_veb != I40E_NO_VEB &&
2355             !(pf->flags & I40E_FLAG_MFP_ENABLED)) {
2356                 /* set defport ON for Main VSI instead of true promisc
2357                  * this way we will get all unicast/multicast and VLAN
2358                  * promisc behavior but will not get VF or VMDq traffic
2359                  * replicated on the Main VSI.
2360                  */
2361                 if (promisc)
2362                         aq_ret = i40e_aq_set_default_vsi(hw,
2363                                                          vsi->seid,
2364                                                          NULL);
2365                 else
2366                         aq_ret = i40e_aq_clear_default_vsi(hw,
2367                                                            vsi->seid,
2368                                                            NULL);
2369                 if (aq_ret) {
2370                         dev_info(&pf->pdev->dev,
2371                                  "Set default VSI failed, err %s, aq_err %s\n",
2372                                  i40e_stat_str(hw, aq_ret),
2373                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2374                 }
2375         } else {
2376                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2377                                                   hw,
2378                                                   vsi->seid,
2379                                                   promisc, NULL,
2380                                                   true);
2381                 if (aq_ret) {
2382                         dev_info(&pf->pdev->dev,
2383                                  "set unicast promisc failed, err %s, aq_err %s\n",
2384                                  i40e_stat_str(hw, aq_ret),
2385                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2386                 }
2387                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2388                                                   hw,
2389                                                   vsi->seid,
2390                                                   promisc, NULL);
2391                 if (aq_ret) {
2392                         dev_info(&pf->pdev->dev,
2393                                  "set multicast promisc failed, err %s, aq_err %s\n",
2394                                  i40e_stat_str(hw, aq_ret),
2395                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2396                 }
2397         }
2398
2399         if (!aq_ret)
2400                 pf->cur_promisc = promisc;
2401
2402         return aq_ret;
2403 }
2404
2405 /**
2406  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
2407  * @vsi: ptr to the VSI
2408  *
2409  * Push any outstanding VSI filter changes through the AdminQ.
2410  *
2411  * Returns 0 or error value
2412  **/
2413 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
2414 {
2415         struct hlist_head tmp_add_list, tmp_del_list;
2416         struct i40e_mac_filter *f;
2417         struct i40e_new_mac_filter *new, *add_head = NULL;
2418         struct i40e_hw *hw = &vsi->back->hw;
2419         bool old_overflow, new_overflow;
2420         unsigned int failed_filters = 0;
2421         unsigned int vlan_filters = 0;
2422         char vsi_name[16] = "PF";
2423         int filter_list_len = 0;
2424         i40e_status aq_ret = 0;
2425         u32 changed_flags = 0;
2426         struct hlist_node *h;
2427         struct i40e_pf *pf;
2428         int num_add = 0;
2429         int num_del = 0;
2430         int retval = 0;
2431         u16 cmd_flags;
2432         int list_size;
2433         int bkt;
2434
2435         /* empty array typed pointers, kcalloc later */
2436         struct i40e_aqc_add_macvlan_element_data *add_list;
2437         struct i40e_aqc_remove_macvlan_element_data *del_list;
2438
2439         while (test_and_set_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state))
2440                 usleep_range(1000, 2000);
2441         pf = vsi->back;
2442
2443         old_overflow = test_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2444
2445         if (vsi->netdev) {
2446                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
2447                 vsi->current_netdev_flags = vsi->netdev->flags;
2448         }
2449
2450         INIT_HLIST_HEAD(&tmp_add_list);
2451         INIT_HLIST_HEAD(&tmp_del_list);
2452
2453         if (vsi->type == I40E_VSI_SRIOV)
2454                 snprintf(vsi_name, sizeof(vsi_name) - 1, "VF %d", vsi->vf_id);
2455         else if (vsi->type != I40E_VSI_MAIN)
2456                 snprintf(vsi_name, sizeof(vsi_name) - 1, "vsi %d", vsi->seid);
2457
2458         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
2459                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
2460
2461                 spin_lock_bh(&vsi->mac_filter_hash_lock);
2462                 /* Create a list of filters to delete. */
2463                 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2464                         if (f->state == I40E_FILTER_REMOVE) {
2465                                 /* Move the element into temporary del_list */
2466                                 hash_del(&f->hlist);
2467                                 hlist_add_head(&f->hlist, &tmp_del_list);
2468
2469                                 /* Avoid counting removed filters */
2470                                 continue;
2471                         }
2472                         if (f->state == I40E_FILTER_NEW) {
2473                                 /* Create a temporary i40e_new_mac_filter */
2474                                 new = kzalloc(sizeof(*new), GFP_ATOMIC);
2475                                 if (!new)
2476                                         goto err_no_memory_locked;
2477
2478                                 /* Store pointer to the real filter */
2479                                 new->f = f;
2480                                 new->state = f->state;
2481
2482                                 /* Add it to the hash list */
2483                                 hlist_add_head(&new->hlist, &tmp_add_list);
2484                         }
2485
2486                         /* Count the number of active (current and new) VLAN
2487                          * filters we have now. Does not count filters which
2488                          * are marked for deletion.
2489                          */
2490                         if (f->vlan > 0)
2491                                 vlan_filters++;
2492                 }
2493
2494                 retval = i40e_correct_mac_vlan_filters(vsi,
2495                                                        &tmp_add_list,
2496                                                        &tmp_del_list,
2497                                                        vlan_filters);
2498
2499                 hlist_for_each_entry(new, &tmp_add_list, hlist)
2500                         netdev_hw_addr_refcnt(new->f, vsi->netdev, 1);
2501
2502                 if (retval)
2503                         goto err_no_memory_locked;
2504
2505                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2506         }
2507
2508         /* Now process 'del_list' outside the lock */
2509         if (!hlist_empty(&tmp_del_list)) {
2510                 filter_list_len = hw->aq.asq_buf_size /
2511                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
2512                 list_size = filter_list_len *
2513                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
2514                 del_list = kzalloc(list_size, GFP_ATOMIC);
2515                 if (!del_list)
2516                         goto err_no_memory;
2517
2518                 hlist_for_each_entry_safe(f, h, &tmp_del_list, hlist) {
2519                         cmd_flags = 0;
2520
2521                         /* handle broadcast filters by updating the broadcast
2522                          * promiscuous flag and release filter list.
2523                          */
2524                         if (is_broadcast_ether_addr(f->macaddr)) {
2525                                 i40e_aqc_broadcast_filter(vsi, vsi_name, f);
2526
2527                                 hlist_del(&f->hlist);
2528                                 kfree(f);
2529                                 continue;
2530                         }
2531
2532                         /* add to delete list */
2533                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
2534                         if (f->vlan == I40E_VLAN_ANY) {
2535                                 del_list[num_del].vlan_tag = 0;
2536                                 cmd_flags |= I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
2537                         } else {
2538                                 del_list[num_del].vlan_tag =
2539                                         cpu_to_le16((u16)(f->vlan));
2540                         }
2541
2542                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
2543                         del_list[num_del].flags = cmd_flags;
2544                         num_del++;
2545
2546                         /* flush a full buffer */
2547                         if (num_del == filter_list_len) {
2548                                 i40e_aqc_del_filters(vsi, vsi_name, del_list,
2549                                                      num_del, &retval);
2550                                 memset(del_list, 0, list_size);
2551                                 num_del = 0;
2552                         }
2553                         /* Release memory for MAC filter entries which were
2554                          * synced up with HW.
2555                          */
2556                         hlist_del(&f->hlist);
2557                         kfree(f);
2558                 }
2559
2560                 if (num_del) {
2561                         i40e_aqc_del_filters(vsi, vsi_name, del_list,
2562                                              num_del, &retval);
2563                 }
2564
2565                 kfree(del_list);
2566                 del_list = NULL;
2567         }
2568
2569         if (!hlist_empty(&tmp_add_list)) {
2570                 /* Do all the adds now. */
2571                 filter_list_len = hw->aq.asq_buf_size /
2572                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2573                 list_size = filter_list_len *
2574                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2575                 add_list = kzalloc(list_size, GFP_ATOMIC);
2576                 if (!add_list)
2577                         goto err_no_memory;
2578
2579                 num_add = 0;
2580                 hlist_for_each_entry_safe(new, h, &tmp_add_list, hlist) {
2581                         /* handle broadcast filters by updating the broadcast
2582                          * promiscuous flag instead of adding a MAC filter.
2583                          */
2584                         if (is_broadcast_ether_addr(new->f->macaddr)) {
2585                                 if (i40e_aqc_broadcast_filter(vsi, vsi_name,
2586                                                               new->f))
2587                                         new->state = I40E_FILTER_FAILED;
2588                                 else
2589                                         new->state = I40E_FILTER_ACTIVE;
2590                                 continue;
2591                         }
2592
2593                         /* add to add array */
2594                         if (num_add == 0)
2595                                 add_head = new;
2596                         cmd_flags = 0;
2597                         ether_addr_copy(add_list[num_add].mac_addr,
2598                                         new->f->macaddr);
2599                         if (new->f->vlan == I40E_VLAN_ANY) {
2600                                 add_list[num_add].vlan_tag = 0;
2601                                 cmd_flags |= I40E_AQC_MACVLAN_ADD_IGNORE_VLAN;
2602                         } else {
2603                                 add_list[num_add].vlan_tag =
2604                                         cpu_to_le16((u16)(new->f->vlan));
2605                         }
2606                         add_list[num_add].queue_number = 0;
2607                         /* set invalid match method for later detection */
2608                         add_list[num_add].match_method = I40E_AQC_MM_ERR_NO_RES;
2609                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2610                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2611                         num_add++;
2612
2613                         /* flush a full buffer */
2614                         if (num_add == filter_list_len) {
2615                                 i40e_aqc_add_filters(vsi, vsi_name, add_list,
2616                                                      add_head, num_add);
2617                                 memset(add_list, 0, list_size);
2618                                 num_add = 0;
2619                         }
2620                 }
2621                 if (num_add) {
2622                         i40e_aqc_add_filters(vsi, vsi_name, add_list, add_head,
2623                                              num_add);
2624                 }
2625                 /* Now move all of the filters from the temp add list back to
2626                  * the VSI's list.
2627                  */
2628                 spin_lock_bh(&vsi->mac_filter_hash_lock);
2629                 hlist_for_each_entry_safe(new, h, &tmp_add_list, hlist) {
2630                         /* Only update the state if we're still NEW */
2631                         if (new->f->state == I40E_FILTER_NEW)
2632                                 new->f->state = new->state;
2633                         hlist_del(&new->hlist);
2634                         netdev_hw_addr_refcnt(new->f, vsi->netdev, -1);
2635                         kfree(new);
2636                 }
2637                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2638                 kfree(add_list);
2639                 add_list = NULL;
2640         }
2641
2642         /* Determine the number of active and failed filters. */
2643         spin_lock_bh(&vsi->mac_filter_hash_lock);
2644         vsi->active_filters = 0;
2645         hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
2646                 if (f->state == I40E_FILTER_ACTIVE)
2647                         vsi->active_filters++;
2648                 else if (f->state == I40E_FILTER_FAILED)
2649                         failed_filters++;
2650         }
2651         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2652
2653         /* Check if we are able to exit overflow promiscuous mode. We can
2654          * safely exit if we didn't just enter, we no longer have any failed
2655          * filters, and we have reduced filters below the threshold value.
2656          */
2657         if (old_overflow && !failed_filters &&
2658             vsi->active_filters < vsi->promisc_threshold) {
2659                 dev_info(&pf->pdev->dev,
2660                          "filter logjam cleared on %s, leaving overflow promiscuous mode\n",
2661                          vsi_name);
2662                 clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2663                 vsi->promisc_threshold = 0;
2664         }
2665
2666         /* if the VF is not trusted do not do promisc */
2667         if ((vsi->type == I40E_VSI_SRIOV) && !pf->vf[vsi->vf_id].trusted) {
2668                 clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2669                 goto out;
2670         }
2671
2672         new_overflow = test_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2673
2674         /* If we are entering overflow promiscuous, we need to calculate a new
2675          * threshold for when we are safe to exit
2676          */
2677         if (!old_overflow && new_overflow)
2678                 vsi->promisc_threshold = (vsi->active_filters * 3) / 4;
2679
2680         /* check for changes in promiscuous modes */
2681         if (changed_flags & IFF_ALLMULTI) {
2682                 bool cur_multipromisc;
2683
2684                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2685                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2686                                                                vsi->seid,
2687                                                                cur_multipromisc,
2688                                                                NULL);
2689                 if (aq_ret) {
2690                         retval = i40e_aq_rc_to_posix(aq_ret,
2691                                                      hw->aq.asq_last_status);
2692                         dev_info(&pf->pdev->dev,
2693                                  "set multi promisc failed on %s, err %s aq_err %s\n",
2694                                  vsi_name,
2695                                  i40e_stat_str(hw, aq_ret),
2696                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2697                 } else {
2698                         dev_info(&pf->pdev->dev, "%s allmulti mode.\n",
2699                                  cur_multipromisc ? "entering" : "leaving");
2700                 }
2701         }
2702
2703         if ((changed_flags & IFF_PROMISC) || old_overflow != new_overflow) {
2704                 bool cur_promisc;
2705
2706                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2707                                new_overflow);
2708                 aq_ret = i40e_set_promiscuous(pf, cur_promisc);
2709                 if (aq_ret) {
2710                         retval = i40e_aq_rc_to_posix(aq_ret,
2711                                                      hw->aq.asq_last_status);
2712                         dev_info(&pf->pdev->dev,
2713                                  "Setting promiscuous %s failed on %s, err %s aq_err %s\n",
2714                                  cur_promisc ? "on" : "off",
2715                                  vsi_name,
2716                                  i40e_stat_str(hw, aq_ret),
2717                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2718                 }
2719         }
2720 out:
2721         /* if something went wrong then set the changed flag so we try again */
2722         if (retval)
2723                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2724
2725         clear_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state);
2726         return retval;
2727
2728 err_no_memory:
2729         /* Restore elements on the temporary add and delete lists */
2730         spin_lock_bh(&vsi->mac_filter_hash_lock);
2731 err_no_memory_locked:
2732         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
2733         i40e_undo_add_filter_entries(vsi, &tmp_add_list);
2734         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2735
2736         vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2737         clear_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state);
2738         return -ENOMEM;
2739 }
2740
2741 /**
2742  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2743  * @pf: board private structure
2744  **/
2745 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2746 {
2747         int v;
2748
2749         if (!pf)
2750                 return;
2751         if (!test_and_clear_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state))
2752                 return;
2753         if (test_bit(__I40E_VF_DISABLE, pf->state)) {
2754                 set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
2755                 return;
2756         }
2757
2758         for (v = 0; v < pf->num_alloc_vsi; v++) {
2759                 if (pf->vsi[v] &&
2760                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED) &&
2761                     !test_bit(__I40E_VSI_RELEASING, pf->vsi[v]->state)) {
2762                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2763
2764                         if (ret) {
2765                                 /* come back and try again later */
2766                                 set_bit(__I40E_MACVLAN_SYNC_PENDING,
2767                                         pf->state);
2768                                 break;
2769                         }
2770                 }
2771         }
2772 }
2773
2774 /**
2775  * i40e_max_xdp_frame_size - returns the maximum allowed frame size for XDP
2776  * @vsi: the vsi
2777  **/
2778 static int i40e_max_xdp_frame_size(struct i40e_vsi *vsi)
2779 {
2780         if (PAGE_SIZE >= 8192 || (vsi->back->flags & I40E_FLAG_LEGACY_RX))
2781                 return I40E_RXBUFFER_2048;
2782         else
2783                 return I40E_RXBUFFER_3072;
2784 }
2785
2786 /**
2787  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2788  * @netdev: network interface device structure
2789  * @new_mtu: new value for maximum frame size
2790  *
2791  * Returns 0 on success, negative on failure
2792  **/
2793 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2794 {
2795         struct i40e_netdev_priv *np = netdev_priv(netdev);
2796         struct i40e_vsi *vsi = np->vsi;
2797         struct i40e_pf *pf = vsi->back;
2798
2799         if (i40e_enabled_xdp_vsi(vsi)) {
2800                 int frame_size = new_mtu + I40E_PACKET_HDR_PAD;
2801
2802                 if (frame_size > i40e_max_xdp_frame_size(vsi))
2803                         return -EINVAL;
2804         }
2805
2806         netdev_dbg(netdev, "changing MTU from %d to %d\n",
2807                    netdev->mtu, new_mtu);
2808         netdev->mtu = new_mtu;
2809         if (netif_running(netdev))
2810                 i40e_vsi_reinit_locked(vsi);
2811         set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
2812         set_bit(__I40E_CLIENT_L2_CHANGE, pf->state);
2813         return 0;
2814 }
2815
2816 /**
2817  * i40e_ioctl - Access the hwtstamp interface
2818  * @netdev: network interface device structure
2819  * @ifr: interface request data
2820  * @cmd: ioctl command
2821  **/
2822 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2823 {
2824         struct i40e_netdev_priv *np = netdev_priv(netdev);
2825         struct i40e_pf *pf = np->vsi->back;
2826
2827         switch (cmd) {
2828         case SIOCGHWTSTAMP:
2829                 return i40e_ptp_get_ts_config(pf, ifr);
2830         case SIOCSHWTSTAMP:
2831                 return i40e_ptp_set_ts_config(pf, ifr);
2832         default:
2833                 return -EOPNOTSUPP;
2834         }
2835 }
2836
2837 /**
2838  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2839  * @vsi: the vsi being adjusted
2840  **/
2841 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2842 {
2843         struct i40e_vsi_context ctxt;
2844         i40e_status ret;
2845
2846         /* Don't modify stripping options if a port VLAN is active */
2847         if (vsi->info.pvid)
2848                 return;
2849
2850         if ((vsi->info.valid_sections &
2851              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2852             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2853                 return;  /* already enabled */
2854
2855         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2856         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2857                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2858
2859         ctxt.seid = vsi->seid;
2860         ctxt.info = vsi->info;
2861         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2862         if (ret) {
2863                 dev_info(&vsi->back->pdev->dev,
2864                          "update vlan stripping failed, err %s aq_err %s\n",
2865                          i40e_stat_str(&vsi->back->hw, ret),
2866                          i40e_aq_str(&vsi->back->hw,
2867                                      vsi->back->hw.aq.asq_last_status));
2868         }
2869 }
2870
2871 /**
2872  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2873  * @vsi: the vsi being adjusted
2874  **/
2875 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2876 {
2877         struct i40e_vsi_context ctxt;
2878         i40e_status ret;
2879
2880         /* Don't modify stripping options if a port VLAN is active */
2881         if (vsi->info.pvid)
2882                 return;
2883
2884         if ((vsi->info.valid_sections &
2885              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2886             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2887              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2888                 return;  /* already disabled */
2889
2890         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2891         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2892                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2893
2894         ctxt.seid = vsi->seid;
2895         ctxt.info = vsi->info;
2896         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2897         if (ret) {
2898                 dev_info(&vsi->back->pdev->dev,
2899                          "update vlan stripping failed, err %s aq_err %s\n",
2900                          i40e_stat_str(&vsi->back->hw, ret),
2901                          i40e_aq_str(&vsi->back->hw,
2902                                      vsi->back->hw.aq.asq_last_status));
2903         }
2904 }
2905
2906 /**
2907  * i40e_add_vlan_all_mac - Add a MAC/VLAN filter for each existing MAC address
2908  * @vsi: the vsi being configured
2909  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2910  *
2911  * This is a helper function for adding a new MAC/VLAN filter with the
2912  * specified VLAN for each existing MAC address already in the hash table.
2913  * This function does *not* perform any accounting to update filters based on
2914  * VLAN mode.
2915  *
2916  * NOTE: this function expects to be called while under the
2917  * mac_filter_hash_lock
2918  **/
2919 int i40e_add_vlan_all_mac(struct i40e_vsi *vsi, s16 vid)
2920 {
2921         struct i40e_mac_filter *f, *add_f;
2922         struct hlist_node *h;
2923         int bkt;
2924
2925         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2926                 if (f->state == I40E_FILTER_REMOVE)
2927                         continue;
2928                 add_f = i40e_add_filter(vsi, f->macaddr, vid);
2929                 if (!add_f) {
2930                         dev_info(&vsi->back->pdev->dev,
2931                                  "Could not add vlan filter %d for %pM\n",
2932                                  vid, f->macaddr);
2933                         return -ENOMEM;
2934                 }
2935         }
2936
2937         return 0;
2938 }
2939
2940 /**
2941  * i40e_vsi_add_vlan - Add VSI membership for given VLAN
2942  * @vsi: the VSI being configured
2943  * @vid: VLAN id to be added
2944  **/
2945 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, u16 vid)
2946 {
2947         int err;
2948
2949         if (vsi->info.pvid)
2950                 return -EINVAL;
2951
2952         /* The network stack will attempt to add VID=0, with the intention to
2953          * receive priority tagged packets with a VLAN of 0. Our HW receives
2954          * these packets by default when configured to receive untagged
2955          * packets, so we don't need to add a filter for this case.
2956          * Additionally, HW interprets adding a VID=0 filter as meaning to
2957          * receive *only* tagged traffic and stops receiving untagged traffic.
2958          * Thus, we do not want to actually add a filter for VID=0
2959          */
2960         if (!vid)
2961                 return 0;
2962
2963         /* Locked once because all functions invoked below iterates list*/
2964         spin_lock_bh(&vsi->mac_filter_hash_lock);
2965         err = i40e_add_vlan_all_mac(vsi, vid);
2966         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2967         if (err)
2968                 return err;
2969
2970         /* schedule our worker thread which will take care of
2971          * applying the new filter changes
2972          */
2973         i40e_service_event_schedule(vsi->back);
2974         return 0;
2975 }
2976
2977 /**
2978  * i40e_rm_vlan_all_mac - Remove MAC/VLAN pair for all MAC with the given VLAN
2979  * @vsi: the vsi being configured
2980  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2981  *
2982  * This function should be used to remove all VLAN filters which match the
2983  * given VID. It does not schedule the service event and does not take the
2984  * mac_filter_hash_lock so it may be combined with other operations under
2985  * a single invocation of the mac_filter_hash_lock.
2986  *
2987  * NOTE: this function expects to be called while under the
2988  * mac_filter_hash_lock
2989  */
2990 void i40e_rm_vlan_all_mac(struct i40e_vsi *vsi, s16 vid)
2991 {
2992         struct i40e_mac_filter *f;
2993         struct hlist_node *h;
2994         int bkt;
2995
2996         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2997                 if (f->vlan == vid)
2998                         __i40e_del_filter(vsi, f);
2999         }
3000 }
3001
3002 /**
3003  * i40e_vsi_kill_vlan - Remove VSI membership for given VLAN
3004  * @vsi: the VSI being configured
3005  * @vid: VLAN id to be removed
3006  **/
3007 void i40e_vsi_kill_vlan(struct i40e_vsi *vsi, u16 vid)
3008 {
3009         if (!vid || vsi->info.pvid)
3010                 return;
3011
3012         spin_lock_bh(&vsi->mac_filter_hash_lock);
3013         i40e_rm_vlan_all_mac(vsi, vid);
3014         spin_unlock_bh(&vsi->mac_filter_hash_lock);
3015
3016         /* schedule our worker thread which will take care of
3017          * applying the new filter changes
3018          */
3019         i40e_service_event_schedule(vsi->back);
3020 }
3021
3022 /**
3023  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
3024  * @netdev: network interface to be adjusted
3025  * @proto: unused protocol value
3026  * @vid: vlan id to be added
3027  *
3028  * net_device_ops implementation for adding vlan ids
3029  **/
3030 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
3031                                 __always_unused __be16 proto, u16 vid)
3032 {
3033         struct i40e_netdev_priv *np = netdev_priv(netdev);
3034         struct i40e_vsi *vsi = np->vsi;
3035         int ret = 0;
3036
3037         if (vid >= VLAN_N_VID)
3038                 return -EINVAL;
3039
3040         ret = i40e_vsi_add_vlan(vsi, vid);
3041         if (!ret)
3042                 set_bit(vid, vsi->active_vlans);
3043
3044         return ret;
3045 }
3046
3047 /**
3048  * i40e_vlan_rx_add_vid_up - Add a vlan id filter to HW offload in UP path
3049  * @netdev: network interface to be adjusted
3050  * @proto: unused protocol value
3051  * @vid: vlan id to be added
3052  **/
3053 static void i40e_vlan_rx_add_vid_up(struct net_device *netdev,
3054                                     __always_unused __be16 proto, u16 vid)
3055 {
3056         struct i40e_netdev_priv *np = netdev_priv(netdev);
3057         struct i40e_vsi *vsi = np->vsi;
3058
3059         if (vid >= VLAN_N_VID)
3060                 return;
3061         set_bit(vid, vsi->active_vlans);
3062 }
3063
3064 /**
3065  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
3066  * @netdev: network interface to be adjusted
3067  * @proto: unused protocol value
3068  * @vid: vlan id to be removed
3069  *
3070  * net_device_ops implementation for removing vlan ids
3071  **/
3072 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
3073                                  __always_unused __be16 proto, u16 vid)
3074 {
3075         struct i40e_netdev_priv *np = netdev_priv(netdev);
3076         struct i40e_vsi *vsi = np->vsi;
3077
3078         /* return code is ignored as there is nothing a user
3079          * can do about failure to remove and a log message was
3080          * already printed from the other function
3081          */
3082         i40e_vsi_kill_vlan(vsi, vid);
3083
3084         clear_bit(vid, vsi->active_vlans);
3085
3086         return 0;
3087 }
3088
3089 /**
3090  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
3091  * @vsi: the vsi being brought back up
3092  **/
3093 static void i40e_restore_vlan(struct i40e_vsi *vsi)
3094 {
3095         u16 vid;
3096
3097         if (!vsi->netdev)
3098                 return;
3099
3100         if (vsi->netdev->features & NETIF_F_HW_VLAN_CTAG_RX)
3101                 i40e_vlan_stripping_enable(vsi);
3102         else
3103                 i40e_vlan_stripping_disable(vsi);
3104
3105         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
3106                 i40e_vlan_rx_add_vid_up(vsi->netdev, htons(ETH_P_8021Q),
3107                                         vid);
3108 }
3109
3110 /**
3111  * i40e_vsi_add_pvid - Add pvid for the VSI
3112  * @vsi: the vsi being adjusted
3113  * @vid: the vlan id to set as a PVID
3114  **/
3115 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
3116 {
3117         struct i40e_vsi_context ctxt;
3118         i40e_status ret;
3119
3120         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
3121         vsi->info.pvid = cpu_to_le16(vid);
3122         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
3123                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
3124                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
3125
3126         ctxt.seid = vsi->seid;
3127         ctxt.info = vsi->info;
3128         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
3129         if (ret) {
3130                 dev_info(&vsi->back->pdev->dev,
3131                          "add pvid failed, err %s aq_err %s\n",
3132                          i40e_stat_str(&vsi->back->hw, ret),
3133                          i40e_aq_str(&vsi->back->hw,
3134                                      vsi->back->hw.aq.asq_last_status));
3135                 return -ENOENT;
3136         }
3137
3138         return 0;
3139 }
3140
3141 /**
3142  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
3143  * @vsi: the vsi being adjusted
3144  *
3145  * Just use the vlan_rx_register() service to put it back to normal
3146  **/
3147 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
3148 {
3149         vsi->info.pvid = 0;
3150
3151         i40e_vlan_stripping_disable(vsi);
3152 }
3153
3154 /**
3155  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
3156  * @vsi: ptr to the VSI
3157  *
3158  * If this function returns with an error, then it's possible one or
3159  * more of the rings is populated (while the rest are not).  It is the
3160  * callers duty to clean those orphaned rings.
3161  *
3162  * Return 0 on success, negative on failure
3163  **/
3164 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
3165 {
3166         int i, err = 0;
3167
3168         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3169                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
3170
3171         if (!i40e_enabled_xdp_vsi(vsi))
3172                 return err;
3173
3174         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3175                 err = i40e_setup_tx_descriptors(vsi->xdp_rings[i]);
3176
3177         return err;
3178 }
3179
3180 /**
3181  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
3182  * @vsi: ptr to the VSI
3183  *
3184  * Free VSI's transmit software resources
3185  **/
3186 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
3187 {
3188         int i;
3189
3190         if (vsi->tx_rings) {
3191                 for (i = 0; i < vsi->num_queue_pairs; i++)
3192                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
3193                                 i40e_free_tx_resources(vsi->tx_rings[i]);
3194         }
3195
3196         if (vsi->xdp_rings) {
3197                 for (i = 0; i < vsi->num_queue_pairs; i++)
3198                         if (vsi->xdp_rings[i] && vsi->xdp_rings[i]->desc)
3199                                 i40e_free_tx_resources(vsi->xdp_rings[i]);
3200         }
3201 }
3202
3203 /**
3204  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
3205  * @vsi: ptr to the VSI
3206  *
3207  * If this function returns with an error, then it's possible one or
3208  * more of the rings is populated (while the rest are not).  It is the
3209  * callers duty to clean those orphaned rings.
3210  *
3211  * Return 0 on success, negative on failure
3212  **/
3213 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
3214 {
3215         int i, err = 0;
3216
3217         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3218                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
3219         return err;
3220 }
3221
3222 /**
3223  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
3224  * @vsi: ptr to the VSI
3225  *
3226  * Free all receive software resources
3227  **/
3228 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
3229 {
3230         int i;
3231
3232         if (!vsi->rx_rings)
3233                 return;
3234
3235         for (i = 0; i < vsi->num_queue_pairs; i++)
3236                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
3237                         i40e_free_rx_resources(vsi->rx_rings[i]);
3238 }
3239
3240 /**
3241  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
3242  * @ring: The Tx ring to configure
3243  *
3244  * This enables/disables XPS for a given Tx descriptor ring
3245  * based on the TCs enabled for the VSI that ring belongs to.
3246  **/
3247 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
3248 {
3249         int cpu;
3250
3251         if (!ring->q_vector || !ring->netdev || ring->ch)
3252                 return;
3253
3254         /* We only initialize XPS once, so as not to overwrite user settings */
3255         if (test_and_set_bit(__I40E_TX_XPS_INIT_DONE, ring->state))
3256                 return;
3257
3258         cpu = cpumask_local_spread(ring->q_vector->v_idx, -1);
3259         netif_set_xps_queue(ring->netdev, get_cpu_mask(cpu),
3260                             ring->queue_index);
3261 }
3262
3263 /**
3264  * i40e_xsk_pool - Retrieve the AF_XDP buffer pool if XDP and ZC is enabled
3265  * @ring: The Tx or Rx ring
3266  *
3267  * Returns the AF_XDP buffer pool or NULL.
3268  **/
3269 static struct xsk_buff_pool *i40e_xsk_pool(struct i40e_ring *ring)
3270 {
3271         bool xdp_on = i40e_enabled_xdp_vsi(ring->vsi);
3272         int qid = ring->queue_index;
3273
3274         if (ring_is_xdp(ring))
3275                 qid -= ring->vsi->alloc_queue_pairs;
3276
3277         if (!xdp_on || !test_bit(qid, ring->vsi->af_xdp_zc_qps))
3278                 return NULL;
3279
3280         return xsk_get_pool_from_qid(ring->vsi->netdev, qid);
3281 }
3282
3283 /**
3284  * i40e_configure_tx_ring - Configure a transmit ring context and rest
3285  * @ring: The Tx ring to configure
3286  *
3287  * Configure the Tx descriptor ring in the HMC context.
3288  **/
3289 static int i40e_configure_tx_ring(struct i40e_ring *ring)
3290 {
3291         struct i40e_vsi *vsi = ring->vsi;
3292         u16 pf_q = vsi->base_queue + ring->queue_index;
3293         struct i40e_hw *hw = &vsi->back->hw;
3294         struct i40e_hmc_obj_txq tx_ctx;
3295         i40e_status err = 0;
3296         u32 qtx_ctl = 0;
3297
3298         if (ring_is_xdp(ring))
3299                 ring->xsk_pool = i40e_xsk_pool(ring);
3300
3301         /* some ATR related tx ring init */
3302         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
3303                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
3304                 ring->atr_count = 0;
3305         } else {
3306                 ring->atr_sample_rate = 0;
3307         }
3308
3309         /* configure XPS */
3310         i40e_config_xps_tx_ring(ring);
3311
3312         /* clear the context structure first */
3313         memset(&tx_ctx, 0, sizeof(tx_ctx));
3314
3315         tx_ctx.new_context = 1;
3316         tx_ctx.base = (ring->dma / 128);
3317         tx_ctx.qlen = ring->count;
3318         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
3319                                                I40E_FLAG_FD_ATR_ENABLED));
3320         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
3321         /* FDIR VSI tx ring can still use RS bit and writebacks */
3322         if (vsi->type != I40E_VSI_FDIR)
3323                 tx_ctx.head_wb_ena = 1;
3324         tx_ctx.head_wb_addr = ring->dma +
3325                               (ring->count * sizeof(struct i40e_tx_desc));
3326
3327         /* As part of VSI creation/update, FW allocates certain
3328          * Tx arbitration queue sets for each TC enabled for
3329          * the VSI. The FW returns the handles to these queue
3330          * sets as part of the response buffer to Add VSI,
3331          * Update VSI, etc. AQ commands. It is expected that
3332          * these queue set handles be associated with the Tx
3333          * queues by the driver as part of the TX queue context
3334          * initialization. This has to be done regardless of
3335          * DCB as by default everything is mapped to TC0.
3336          */
3337
3338         if (ring->ch)
3339                 tx_ctx.rdylist =
3340                         le16_to_cpu(ring->ch->info.qs_handle[ring->dcb_tc]);
3341
3342         else
3343                 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
3344
3345         tx_ctx.rdylist_act = 0;
3346
3347         /* clear the context in the HMC */
3348         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
3349         if (err) {
3350                 dev_info(&vsi->back->pdev->dev,
3351                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
3352                          ring->queue_index, pf_q, err);
3353                 return -ENOMEM;
3354         }
3355
3356         /* set the context in the HMC */
3357         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
3358         if (err) {
3359                 dev_info(&vsi->back->pdev->dev,
3360                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
3361                          ring->queue_index, pf_q, err);
3362                 return -ENOMEM;
3363         }
3364
3365         /* Now associate this queue with this PCI function */
3366         if (ring->ch) {
3367                 if (ring->ch->type == I40E_VSI_VMDQ2)
3368                         qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
3369                 else
3370                         return -EINVAL;
3371
3372                 qtx_ctl |= (ring->ch->vsi_number <<
3373                             I40E_QTX_CTL_VFVM_INDX_SHIFT) &
3374                             I40E_QTX_CTL_VFVM_INDX_MASK;
3375         } else {
3376                 if (vsi->type == I40E_VSI_VMDQ2) {
3377                         qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
3378                         qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
3379                                     I40E_QTX_CTL_VFVM_INDX_MASK;
3380                 } else {
3381                         qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
3382                 }
3383         }
3384
3385         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
3386                     I40E_QTX_CTL_PF_INDX_MASK);
3387         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
3388         i40e_flush(hw);
3389
3390         /* cache tail off for easier writes later */
3391         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
3392
3393         return 0;
3394 }
3395
3396 /**
3397  * i40e_configure_rx_ring - Configure a receive ring context
3398  * @ring: The Rx ring to configure
3399  *
3400  * Configure the Rx descriptor ring in the HMC context.
3401  **/
3402 static int i40e_configure_rx_ring(struct i40e_ring *ring)
3403 {
3404         struct i40e_vsi *vsi = ring->vsi;
3405         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
3406         u16 pf_q = vsi->base_queue + ring->queue_index;
3407         struct i40e_hw *hw = &vsi->back->hw;
3408         struct i40e_hmc_obj_rxq rx_ctx;
3409         i40e_status err = 0;
3410         bool ok;
3411         int ret;
3412
3413         bitmap_zero(ring->state, __I40E_RING_STATE_NBITS);
3414
3415         /* clear the context structure first */
3416         memset(&rx_ctx, 0, sizeof(rx_ctx));
3417
3418         if (ring->vsi->type == I40E_VSI_MAIN)
3419                 xdp_rxq_info_unreg_mem_model(&ring->xdp_rxq);
3420
3421         ring->xsk_pool = i40e_xsk_pool(ring);
3422         if (ring->xsk_pool) {
3423                 ring->rx_buf_len =
3424                   xsk_pool_get_rx_frame_size(ring->xsk_pool);
3425                 /* For AF_XDP ZC, we disallow packets to span on
3426                  * multiple buffers, thus letting us skip that
3427                  * handling in the fast-path.
3428                  */
3429                 chain_len = 1;
3430                 ret = xdp_rxq_info_reg_mem_model(&ring->xdp_rxq,
3431                                                  MEM_TYPE_XSK_BUFF_POOL,
3432                                                  NULL);
3433                 if (ret)
3434                         return ret;
3435                 dev_info(&vsi->back->pdev->dev,
3436                          "Registered XDP mem model MEM_TYPE_XSK_BUFF_POOL on Rx ring %d\n",
3437                          ring->queue_index);
3438
3439         } else {
3440                 ring->rx_buf_len = vsi->rx_buf_len;
3441                 if (ring->vsi->type == I40E_VSI_MAIN) {
3442                         ret = xdp_rxq_info_reg_mem_model(&ring->xdp_rxq,
3443                                                          MEM_TYPE_PAGE_SHARED,
3444                                                          NULL);
3445                         if (ret)
3446                                 return ret;
3447                 }
3448         }
3449
3450         rx_ctx.dbuff = DIV_ROUND_UP(ring->rx_buf_len,
3451                                     BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
3452
3453         rx_ctx.base = (ring->dma / 128);
3454         rx_ctx.qlen = ring->count;
3455
3456         /* use 16 byte descriptors */
3457         rx_ctx.dsize = 0;
3458
3459         /* descriptor type is always zero
3460          * rx_ctx.dtype = 0;
3461          */
3462         rx_ctx.hsplit_0 = 0;
3463
3464         rx_ctx.rxmax = min_t(u16, vsi->max_frame, chain_len * ring->rx_buf_len);
3465         if (hw->revision_id == 0)
3466                 rx_ctx.lrxqthresh = 0;
3467         else
3468                 rx_ctx.lrxqthresh = 1;
3469         rx_ctx.crcstrip = 1;
3470         rx_ctx.l2tsel = 1;
3471         /* this controls whether VLAN is stripped from inner headers */
3472         rx_ctx.showiv = 0;
3473         /* set the prefena field to 1 because the manual says to */
3474         rx_ctx.prefena = 1;
3475
3476         /* clear the context in the HMC */
3477         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
3478         if (err) {
3479                 dev_info(&vsi->back->pdev->dev,
3480                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
3481                          ring->queue_index, pf_q, err);
3482                 return -ENOMEM;
3483         }
3484
3485         /* set the context in the HMC */
3486         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
3487         if (err) {
3488                 dev_info(&vsi->back->pdev->dev,
3489                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
3490                          ring->queue_index, pf_q, err);
3491                 return -ENOMEM;
3492         }
3493
3494         /* configure Rx buffer alignment */
3495         if (!vsi->netdev || (vsi->back->flags & I40E_FLAG_LEGACY_RX))
3496                 clear_ring_build_skb_enabled(ring);
3497         else
3498                 set_ring_build_skb_enabled(ring);
3499
3500         /* cache tail for quicker writes, and clear the reg before use */
3501         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
3502         writel(0, ring->tail);
3503
3504         if (ring->xsk_pool) {
3505                 xsk_pool_set_rxq_info(ring->xsk_pool, &ring->xdp_rxq);
3506                 ok = i40e_alloc_rx_buffers_zc(ring, I40E_DESC_UNUSED(ring));
3507         } else {
3508                 ok = !i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
3509         }
3510         if (!ok) {
3511                 /* Log this in case the user has forgotten to give the kernel
3512                  * any buffers, even later in the application.
3513                  */
3514                 dev_info(&vsi->back->pdev->dev,
3515                          "Failed to allocate some buffers on %sRx ring %d (pf_q %d)\n",
3516                          ring->xsk_pool ? "AF_XDP ZC enabled " : "",
3517                          ring->queue_index, pf_q);
3518         }
3519
3520         return 0;
3521 }
3522
3523 /**
3524  * i40e_vsi_configure_tx - Configure the VSI for Tx
3525  * @vsi: VSI structure describing this set of rings and resources
3526  *
3527  * Configure the Tx VSI for operation.
3528  **/
3529 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
3530 {
3531         int err = 0;
3532         u16 i;
3533
3534         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
3535                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
3536
3537         if (err || !i40e_enabled_xdp_vsi(vsi))
3538                 return err;
3539
3540         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
3541                 err = i40e_configure_tx_ring(vsi->xdp_rings[i]);
3542
3543         return err;
3544 }
3545
3546 /**
3547  * i40e_vsi_configure_rx - Configure the VSI for Rx
3548  * @vsi: the VSI being configured
3549  *
3550  * Configure the Rx VSI for operation.
3551  **/
3552 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
3553 {
3554         int err = 0;
3555         u16 i;
3556
3557         if (!vsi->netdev || (vsi->back->flags & I40E_FLAG_LEGACY_RX)) {
3558                 vsi->max_frame = I40E_MAX_RXBUFFER;
3559                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
3560 #if (PAGE_SIZE < 8192)
3561         } else if (!I40E_2K_TOO_SMALL_WITH_PADDING &&
3562                    (vsi->netdev->mtu <= ETH_DATA_LEN)) {
3563                 vsi->max_frame = I40E_RXBUFFER_1536 - NET_IP_ALIGN;
3564                 vsi->rx_buf_len = I40E_RXBUFFER_1536 - NET_IP_ALIGN;
3565 #endif
3566         } else {
3567                 vsi->max_frame = I40E_MAX_RXBUFFER;
3568                 vsi->rx_buf_len = (PAGE_SIZE < 8192) ? I40E_RXBUFFER_3072 :
3569                                                        I40E_RXBUFFER_2048;
3570         }
3571
3572         /* set up individual rings */
3573         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3574                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
3575
3576         return err;
3577 }
3578
3579 /**
3580  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
3581  * @vsi: ptr to the VSI
3582  **/
3583 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
3584 {
3585         struct i40e_ring *tx_ring, *rx_ring;
3586         u16 qoffset, qcount;
3587         int i, n;
3588
3589         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3590                 /* Reset the TC information */
3591                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3592                         rx_ring = vsi->rx_rings[i];
3593                         tx_ring = vsi->tx_rings[i];
3594                         rx_ring->dcb_tc = 0;
3595                         tx_ring->dcb_tc = 0;
3596                 }
3597                 return;
3598         }
3599
3600         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3601                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3602                         continue;
3603
3604                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3605                 qcount = vsi->tc_config.tc_info[n].qcount;
3606                 for (i = qoffset; i < (qoffset + qcount); i++) {
3607                         rx_ring = vsi->rx_rings[i];
3608                         tx_ring = vsi->tx_rings[i];
3609                         rx_ring->dcb_tc = n;
3610                         tx_ring->dcb_tc = n;
3611                 }
3612         }
3613 }
3614
3615 /**
3616  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3617  * @vsi: ptr to the VSI
3618  **/
3619 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3620 {
3621         if (vsi->netdev)
3622                 i40e_set_rx_mode(vsi->netdev);
3623 }
3624
3625 /**
3626  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3627  * @vsi: Pointer to the targeted VSI
3628  *
3629  * This function replays the hlist on the hw where all the SB Flow Director
3630  * filters were saved.
3631  **/
3632 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3633 {
3634         struct i40e_fdir_filter *filter;
3635         struct i40e_pf *pf = vsi->back;
3636         struct hlist_node *node;
3637
3638         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3639                 return;
3640
3641         /* Reset FDir counters as we're replaying all existing filters */
3642         pf->fd_tcp4_filter_cnt = 0;
3643         pf->fd_udp4_filter_cnt = 0;
3644         pf->fd_sctp4_filter_cnt = 0;
3645         pf->fd_ip4_filter_cnt = 0;
3646
3647         hlist_for_each_entry_safe(filter, node,
3648                                   &pf->fdir_filter_list, fdir_node) {
3649                 i40e_add_del_fdir(vsi, filter, true);
3650         }
3651 }
3652
3653 /**
3654  * i40e_vsi_configure - Set up the VSI for action
3655  * @vsi: the VSI being configured
3656  **/
3657 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3658 {
3659         int err;
3660
3661         i40e_set_vsi_rx_mode(vsi);
3662         i40e_restore_vlan(vsi);
3663         i40e_vsi_config_dcb_rings(vsi);
3664         err = i40e_vsi_configure_tx(vsi);
3665         if (!err)
3666                 err = i40e_vsi_configure_rx(vsi);
3667
3668         return err;
3669 }
3670
3671 /**
3672  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3673  * @vsi: the VSI being configured
3674  **/
3675 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3676 {
3677         bool has_xdp = i40e_enabled_xdp_vsi(vsi);
3678         struct i40e_pf *pf = vsi->back;
3679         struct i40e_hw *hw = &pf->hw;
3680         u16 vector;
3681         int i, q;
3682         u32 qp;
3683
3684         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3685          * and PFINT_LNKLSTn registers, e.g.:
3686          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3687          */
3688         qp = vsi->base_queue;
3689         vector = vsi->base_vector;
3690         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3691                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3692
3693                 q_vector->rx.next_update = jiffies + 1;
3694                 q_vector->rx.target_itr =
3695                         ITR_TO_REG(vsi->rx_rings[i]->itr_setting);
3696                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3697                      q_vector->rx.target_itr >> 1);
3698                 q_vector->rx.current_itr = q_vector->rx.target_itr;
3699
3700                 q_vector->tx.next_update = jiffies + 1;
3701                 q_vector->tx.target_itr =
3702                         ITR_TO_REG(vsi->tx_rings[i]->itr_setting);
3703                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3704                      q_vector->tx.target_itr >> 1);
3705                 q_vector->tx.current_itr = q_vector->tx.target_itr;
3706
3707                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3708                      i40e_intrl_usec_to_reg(vsi->int_rate_limit));
3709
3710                 /* Linked list for the queuepairs assigned to this vector */
3711                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3712                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3713                         u32 nextqp = has_xdp ? qp + vsi->alloc_queue_pairs : qp;
3714                         u32 val;
3715
3716                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3717                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3718                               (vector << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3719                               (nextqp << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
3720                               (I40E_QUEUE_TYPE_TX <<
3721                                I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3722
3723                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3724
3725                         if (has_xdp) {
3726                                 val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3727                                       (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3728                                       (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3729                                       (qp << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT) |
3730                                       (I40E_QUEUE_TYPE_TX <<
3731                                        I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3732
3733                                 wr32(hw, I40E_QINT_TQCTL(nextqp), val);
3734                         }
3735
3736                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3737                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3738                               (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3739                               ((qp + 1) << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT) |
3740                               (I40E_QUEUE_TYPE_RX <<
3741                                I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3742
3743                         /* Terminate the linked list */
3744                         if (q == (q_vector->num_ringpairs - 1))
3745                                 val |= (I40E_QUEUE_END_OF_LIST <<
3746                                         I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3747
3748                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3749                         qp++;
3750                 }
3751         }
3752
3753         i40e_flush(hw);
3754 }
3755
3756 /**
3757  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3758  * @pf: pointer to private device data structure
3759  **/
3760 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3761 {
3762         struct i40e_hw *hw = &pf->hw;
3763         u32 val;
3764
3765         /* clear things first */
3766         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3767         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3768
3769         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3770               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3771               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3772               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3773               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3774               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3775               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3776               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3777
3778         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3779                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3780
3781         if (pf->flags & I40E_FLAG_PTP)
3782                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3783
3784         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3785
3786         /* SW_ITR_IDX = 0, but don't change INTENA */
3787         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3788                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3789
3790         /* OTHER_ITR_IDX = 0 */
3791         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3792 }
3793
3794 /**
3795  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3796  * @vsi: the VSI being configured
3797  **/
3798 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3799 {
3800         u32 nextqp = i40e_enabled_xdp_vsi(vsi) ? vsi->alloc_queue_pairs : 0;
3801         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3802         struct i40e_pf *pf = vsi->back;
3803         struct i40e_hw *hw = &pf->hw;
3804         u32 val;
3805
3806         /* set the ITR configuration */
3807         q_vector->rx.next_update = jiffies + 1;
3808         q_vector->rx.target_itr = ITR_TO_REG(vsi->rx_rings[0]->itr_setting);
3809         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.target_itr >> 1);
3810         q_vector->rx.current_itr = q_vector->rx.target_itr;
3811         q_vector->tx.next_update = jiffies + 1;
3812         q_vector->tx.target_itr = ITR_TO_REG(vsi->tx_rings[0]->itr_setting);
3813         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.target_itr >> 1);
3814         q_vector->tx.current_itr = q_vector->tx.target_itr;
3815
3816         i40e_enable_misc_int_causes(pf);
3817
3818         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3819         wr32(hw, I40E_PFINT_LNKLST0, 0);
3820
3821         /* Associate the queue pair to the vector and enable the queue int */
3822         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                   |
3823               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3824               (nextqp      << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3825               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3826
3827         wr32(hw, I40E_QINT_RQCTL(0), val);
3828
3829         if (i40e_enabled_xdp_vsi(vsi)) {
3830                 val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                 |
3831                       (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)|
3832                       (I40E_QUEUE_TYPE_TX
3833                        << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3834
3835                 wr32(hw, I40E_QINT_TQCTL(nextqp), val);
3836         }
3837
3838         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3839               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3840               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3841
3842         wr32(hw, I40E_QINT_TQCTL(0), val);
3843         i40e_flush(hw);
3844 }
3845
3846 /**
3847  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3848  * @pf: board private structure
3849  **/
3850 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3851 {
3852         struct i40e_hw *hw = &pf->hw;
3853
3854         wr32(hw, I40E_PFINT_DYN_CTL0,
3855              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3856         i40e_flush(hw);
3857 }
3858
3859 /**
3860  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3861  * @pf: board private structure
3862  **/
3863 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3864 {
3865         struct i40e_hw *hw = &pf->hw;
3866         u32 val;
3867
3868         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3869               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3870               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3871
3872         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3873         i40e_flush(hw);
3874 }
3875
3876 /**
3877  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3878  * @irq: interrupt number
3879  * @data: pointer to a q_vector
3880  **/
3881 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3882 {
3883         struct i40e_q_vector *q_vector = data;
3884
3885         if (!q_vector->tx.ring && !q_vector->rx.ring)
3886                 return IRQ_HANDLED;
3887
3888         napi_schedule_irqoff(&q_vector->napi);
3889
3890         return IRQ_HANDLED;
3891 }
3892
3893 /**
3894  * i40e_irq_affinity_notify - Callback for affinity changes
3895  * @notify: context as to what irq was changed
3896  * @mask: the new affinity mask
3897  *
3898  * This is a callback function used by the irq_set_affinity_notifier function
3899  * so that we may register to receive changes to the irq affinity masks.
3900  **/
3901 static void i40e_irq_affinity_notify(struct irq_affinity_notify *notify,
3902                                      const cpumask_t *mask)
3903 {
3904         struct i40e_q_vector *q_vector =
3905                 container_of(notify, struct i40e_q_vector, affinity_notify);
3906
3907         cpumask_copy(&q_vector->affinity_mask, mask);
3908 }
3909
3910 /**
3911  * i40e_irq_affinity_release - Callback for affinity notifier release
3912  * @ref: internal core kernel usage
3913  *
3914  * This is a callback function used by the irq_set_affinity_notifier function
3915  * to inform the current notification subscriber that they will no longer
3916  * receive notifications.
3917  **/
3918 static void i40e_irq_affinity_release(struct kref *ref) {}
3919
3920 /**
3921  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3922  * @vsi: the VSI being configured
3923  * @basename: name for the vector
3924  *
3925  * Allocates MSI-X vectors and requests interrupts from the kernel.
3926  **/
3927 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3928 {
3929         int q_vectors = vsi->num_q_vectors;
3930         struct i40e_pf *pf = vsi->back;
3931         int base = vsi->base_vector;
3932         int rx_int_idx = 0;
3933         int tx_int_idx = 0;
3934         int vector, err;
3935         int irq_num;
3936         int cpu;
3937
3938         for (vector = 0; vector < q_vectors; vector++) {
3939                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3940
3941                 irq_num = pf->msix_entries[base + vector].vector;
3942
3943                 if (q_vector->tx.ring && q_vector->rx.ring) {
3944                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3945                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3946                         tx_int_idx++;
3947                 } else if (q_vector->rx.ring) {
3948                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3949                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3950                 } else if (q_vector->tx.ring) {
3951                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3952                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3953                 } else {
3954                         /* skip this unused q_vector */
3955                         continue;
3956                 }
3957                 err = request_irq(irq_num,
3958                                   vsi->irq_handler,
3959                                   0,
3960                                   q_vector->name,
3961                                   q_vector);
3962                 if (err) {
3963                         dev_info(&pf->pdev->dev,
3964                                  "MSIX request_irq failed, error: %d\n", err);
3965                         goto free_queue_irqs;
3966                 }
3967
3968                 /* register for affinity change notifications */
3969                 q_vector->affinity_notify.notify = i40e_irq_affinity_notify;
3970                 q_vector->affinity_notify.release = i40e_irq_affinity_release;
3971                 irq_set_affinity_notifier(irq_num, &q_vector->affinity_notify);
3972                 /* Spread affinity hints out across online CPUs.
3973                  *
3974                  * get_cpu_mask returns a static constant mask with
3975                  * a permanent lifetime so it's ok to pass to
3976                  * irq_set_affinity_hint without making a copy.
3977                  */
3978                 cpu = cpumask_local_spread(q_vector->v_idx, -1);
3979                 irq_set_affinity_hint(irq_num, get_cpu_mask(cpu));
3980         }
3981
3982         vsi->irqs_ready = true;
3983         return 0;
3984
3985 free_queue_irqs:
3986         while (vector) {
3987                 vector--;
3988                 irq_num = pf->msix_entries[base + vector].vector;
3989                 irq_set_affinity_notifier(irq_num, NULL);
3990                 irq_set_affinity_hint(irq_num, NULL);
3991                 free_irq(irq_num, &vsi->q_vectors[vector]);
3992         }
3993         return err;
3994 }
3995
3996 /**
3997  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3998  * @vsi: the VSI being un-configured
3999  **/
4000 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
4001 {
4002         struct i40e_pf *pf = vsi->back;
4003         struct i40e_hw *hw = &pf->hw;
4004         int base = vsi->base_vector;
4005         int i;
4006
4007         /* disable interrupt causation from each queue */
4008         for (i = 0; i < vsi->num_queue_pairs; i++) {
4009                 u32 val;
4010
4011                 val = rd32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx));
4012                 val &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
4013                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), val);
4014
4015                 val = rd32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx));
4016                 val &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
4017                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), val);
4018
4019                 if (!i40e_enabled_xdp_vsi(vsi))
4020                         continue;
4021                 wr32(hw, I40E_QINT_TQCTL(vsi->xdp_rings[i]->reg_idx), 0);
4022         }
4023
4024         /* disable each interrupt */
4025         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4026                 for (i = vsi->base_vector;
4027                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
4028                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
4029
4030                 i40e_flush(hw);
4031                 for (i = 0; i < vsi->num_q_vectors; i++)
4032                         synchronize_irq(pf->msix_entries[i + base].vector);
4033         } else {
4034                 /* Legacy and MSI mode - this stops all interrupt handling */
4035                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
4036                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
4037                 i40e_flush(hw);
4038                 synchronize_irq(pf->pdev->irq);
4039         }
4040 }
4041
4042 /**
4043  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
4044  * @vsi: the VSI being configured
4045  **/
4046 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
4047 {
4048         struct i40e_pf *pf = vsi->back;
4049         int i;
4050
4051         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4052                 for (i = 0; i < vsi->num_q_vectors; i++)
4053                         i40e_irq_dynamic_enable(vsi, i);
4054         } else {
4055                 i40e_irq_dynamic_enable_icr0(pf);
4056         }
4057
4058         i40e_flush(&pf->hw);
4059         return 0;
4060 }
4061
4062 /**
4063  * i40e_free_misc_vector - Free the vector that handles non-queue events
4064  * @pf: board private structure
4065  **/
4066 static void i40e_free_misc_vector(struct i40e_pf *pf)
4067 {
4068         /* Disable ICR 0 */
4069         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
4070         i40e_flush(&pf->hw);
4071
4072         if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
4073                 synchronize_irq(pf->msix_entries[0].vector);
4074                 free_irq(pf->msix_entries[0].vector, pf);
4075                 clear_bit(__I40E_MISC_IRQ_REQUESTED, pf->state);
4076         }
4077 }
4078
4079 /**
4080  * i40e_intr - MSI/Legacy and non-queue interrupt handler
4081  * @irq: interrupt number
4082  * @data: pointer to a q_vector
4083  *
4084  * This is the handler used for all MSI/Legacy interrupts, and deals
4085  * with both queue and non-queue interrupts.  This is also used in
4086  * MSIX mode to handle the non-queue interrupts.
4087  **/
4088 static irqreturn_t i40e_intr(int irq, void *data)
4089 {
4090         struct i40e_pf *pf = (struct i40e_pf *)data;
4091         struct i40e_hw *hw = &pf->hw;
4092         irqreturn_t ret = IRQ_NONE;
4093         u32 icr0, icr0_remaining;
4094         u32 val, ena_mask;
4095
4096         icr0 = rd32(hw, I40E_PFINT_ICR0);
4097         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
4098
4099         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
4100         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
4101                 goto enable_intr;
4102
4103         /* if interrupt but no bits showing, must be SWINT */
4104         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
4105             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
4106                 pf->sw_int_count++;
4107
4108         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
4109             (icr0 & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
4110                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
4111                 dev_dbg(&pf->pdev->dev, "cleared PE_CRITERR\n");
4112                 set_bit(__I40E_CORE_RESET_REQUESTED, pf->state);
4113         }
4114
4115         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
4116         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
4117                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
4118                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
4119
4120                 /* We do not have a way to disarm Queue causes while leaving
4121                  * interrupt enabled for all other causes, ideally
4122                  * interrupt should be disabled while we are in NAPI but
4123                  * this is not a performance path and napi_schedule()
4124                  * can deal with rescheduling.
4125                  */
4126                 if (!test_bit(__I40E_DOWN, pf->state))
4127                         napi_schedule_irqoff(&q_vector->napi);
4128         }
4129
4130         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
4131                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
4132                 set_bit(__I40E_ADMINQ_EVENT_PENDING, pf->state);
4133                 i40e_debug(&pf->hw, I40E_DEBUG_NVM, "AdminQ event\n");
4134         }
4135
4136         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
4137                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
4138                 set_bit(__I40E_MDD_EVENT_PENDING, pf->state);
4139         }
4140
4141         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
4142                 /* disable any further VFLR event notifications */
4143                 if (test_bit(__I40E_VF_RESETS_DISABLED, pf->state)) {
4144                         u32 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
4145
4146                         reg &= ~I40E_PFINT_ICR0_VFLR_MASK;
4147                         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
4148                 } else {
4149                         ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
4150                         set_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
4151                 }
4152         }
4153
4154         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
4155                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
4156                         set_bit(__I40E_RESET_INTR_RECEIVED, pf->state);
4157                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
4158                 val = rd32(hw, I40E_GLGEN_RSTAT);
4159                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
4160                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
4161                 if (val == I40E_RESET_CORER) {
4162                         pf->corer_count++;
4163                 } else if (val == I40E_RESET_GLOBR) {
4164                         pf->globr_count++;
4165                 } else if (val == I40E_RESET_EMPR) {
4166                         pf->empr_count++;
4167                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state);
4168                 }
4169         }
4170
4171         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
4172                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
4173                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
4174                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
4175                          rd32(hw, I40E_PFHMC_ERRORINFO),
4176                          rd32(hw, I40E_PFHMC_ERRORDATA));
4177         }
4178
4179         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
4180                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
4181
4182                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
4183                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
4184                         i40e_ptp_tx_hwtstamp(pf);
4185                 }
4186         }
4187
4188         /* If a critical error is pending we have no choice but to reset the
4189          * device.
4190          * Report and mask out any remaining unexpected interrupts.
4191          */
4192         icr0_remaining = icr0 & ena_mask;
4193         if (icr0_remaining) {
4194                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
4195                          icr0_remaining);
4196                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
4197                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
4198                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
4199                         dev_info(&pf->pdev->dev, "device will be reset\n");
4200                         set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
4201                         i40e_service_event_schedule(pf);
4202                 }
4203                 ena_mask &= ~icr0_remaining;
4204         }
4205         ret = IRQ_HANDLED;
4206
4207 enable_intr:
4208         /* re-enable interrupt causes */
4209         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
4210         if (!test_bit(__I40E_DOWN, pf->state) ||
4211             test_bit(__I40E_RECOVERY_MODE, pf->state)) {
4212                 i40e_service_event_schedule(pf);
4213                 i40e_irq_dynamic_enable_icr0(pf);
4214         }
4215
4216         return ret;
4217 }
4218
4219 /**
4220  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
4221  * @tx_ring:  tx ring to clean
4222  * @budget:   how many cleans we're allowed
4223  *
4224  * Returns true if there's any budget left (e.g. the clean is finished)
4225  **/
4226 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
4227 {
4228         struct i40e_vsi *vsi = tx_ring->vsi;
4229         u16 i = tx_ring->next_to_clean;
4230         struct i40e_tx_buffer *tx_buf;
4231         struct i40e_tx_desc *tx_desc;
4232
4233         tx_buf = &tx_ring->tx_bi[i];
4234         tx_desc = I40E_TX_DESC(tx_ring, i);
4235         i -= tx_ring->count;
4236
4237         do {
4238                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
4239
4240                 /* if next_to_watch is not set then there is no work pending */
4241                 if (!eop_desc)
4242                         break;
4243
4244                 /* prevent any other reads prior to eop_desc */
4245                 smp_rmb();
4246
4247                 /* if the descriptor isn't done, no work yet to do */
4248                 if (!(eop_desc->cmd_type_offset_bsz &
4249                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
4250                         break;
4251
4252                 /* clear next_to_watch to prevent false hangs */
4253                 tx_buf->next_to_watch = NULL;
4254
4255                 tx_desc->buffer_addr = 0;
4256                 tx_desc->cmd_type_offset_bsz = 0;
4257                 /* move past filter desc */
4258                 tx_buf++;
4259                 tx_desc++;
4260                 i++;
4261                 if (unlikely(!i)) {
4262                         i -= tx_ring->count;
4263                         tx_buf = tx_ring->tx_bi;
4264                         tx_desc = I40E_TX_DESC(tx_ring, 0);
4265                 }
4266                 /* unmap skb header data */
4267                 dma_unmap_single(tx_ring->dev,
4268                                  dma_unmap_addr(tx_buf, dma),
4269                                  dma_unmap_len(tx_buf, len),
4270                                  DMA_TO_DEVICE);
4271                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
4272                         kfree(tx_buf->raw_buf);
4273
4274                 tx_buf->raw_buf = NULL;
4275                 tx_buf->tx_flags = 0;
4276                 tx_buf->next_to_watch = NULL;
4277                 dma_unmap_len_set(tx_buf, len, 0);
4278                 tx_desc->buffer_addr = 0;
4279                 tx_desc->cmd_type_offset_bsz = 0;
4280
4281                 /* move us past the eop_desc for start of next FD desc */
4282                 tx_buf++;
4283                 tx_desc++;
4284                 i++;
4285                 if (unlikely(!i)) {
4286                         i -= tx_ring->count;
4287                         tx_buf = tx_ring->tx_bi;
4288                         tx_desc = I40E_TX_DESC(tx_ring, 0);
4289                 }
4290
4291                 /* update budget accounting */
4292                 budget--;
4293         } while (likely(budget));
4294
4295         i += tx_ring->count;
4296         tx_ring->next_to_clean = i;
4297
4298         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
4299                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
4300
4301         return budget > 0;
4302 }
4303
4304 /**
4305  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
4306  * @irq: interrupt number
4307  * @data: pointer to a q_vector
4308  **/
4309 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
4310 {
4311         struct i40e_q_vector *q_vector = data;
4312         struct i40e_vsi *vsi;
4313
4314         if (!q_vector->tx.ring)
4315                 return IRQ_HANDLED;
4316
4317         vsi = q_vector->tx.ring->vsi;
4318         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
4319
4320         return IRQ_HANDLED;
4321 }
4322
4323 /**
4324  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
4325  * @vsi: the VSI being configured
4326  * @v_idx: vector index
4327  * @qp_idx: queue pair index
4328  **/
4329 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
4330 {
4331         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4332         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
4333         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
4334
4335         tx_ring->q_vector = q_vector;
4336         tx_ring->next = q_vector->tx.ring;
4337         q_vector->tx.ring = tx_ring;
4338         q_vector->tx.count++;
4339
4340         /* Place XDP Tx ring in the same q_vector ring list as regular Tx */
4341         if (i40e_enabled_xdp_vsi(vsi)) {
4342                 struct i40e_ring *xdp_ring = vsi->xdp_rings[qp_idx];
4343
4344                 xdp_ring->q_vector = q_vector;
4345                 xdp_ring->next = q_vector->tx.ring;
4346                 q_vector->tx.ring = xdp_ring;
4347                 q_vector->tx.count++;
4348         }
4349
4350         rx_ring->q_vector = q_vector;
4351         rx_ring->next = q_vector->rx.ring;
4352         q_vector->rx.ring = rx_ring;
4353         q_vector->rx.count++;
4354 }
4355
4356 /**
4357  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
4358  * @vsi: the VSI being configured
4359  *
4360  * This function maps descriptor rings to the queue-specific vectors
4361  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
4362  * one vector per queue pair, but on a constrained vector budget, we
4363  * group the queue pairs as "efficiently" as possible.
4364  **/
4365 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
4366 {
4367         int qp_remaining = vsi->num_queue_pairs;
4368         int q_vectors = vsi->num_q_vectors;
4369         int num_ringpairs;
4370         int v_start = 0;
4371         int qp_idx = 0;
4372
4373         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
4374          * group them so there are multiple queues per vector.
4375          * It is also important to go through all the vectors available to be
4376          * sure that if we don't use all the vectors, that the remaining vectors
4377          * are cleared. This is especially important when decreasing the
4378          * number of queues in use.
4379          */
4380         for (; v_start < q_vectors; v_start++) {
4381                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
4382
4383                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
4384
4385                 q_vector->num_ringpairs = num_ringpairs;
4386                 q_vector->reg_idx = q_vector->v_idx + vsi->base_vector - 1;
4387
4388                 q_vector->rx.count = 0;
4389                 q_vector->tx.count = 0;
4390                 q_vector->rx.ring = NULL;
4391                 q_vector->tx.ring = NULL;
4392
4393                 while (num_ringpairs--) {
4394                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
4395                         qp_idx++;
4396                         qp_remaining--;
4397                 }
4398         }
4399 }
4400
4401 /**
4402  * i40e_vsi_request_irq - Request IRQ from the OS
4403  * @vsi: the VSI being configured
4404  * @basename: name for the vector
4405  **/
4406 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
4407 {
4408         struct i40e_pf *pf = vsi->back;
4409         int err;
4410
4411         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4412                 err = i40e_vsi_request_irq_msix(vsi, basename);
4413         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
4414                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
4415                                   pf->int_name, pf);
4416         else
4417                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
4418                                   pf->int_name, pf);
4419
4420         if (err)
4421                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
4422
4423         return err;
4424 }
4425
4426 #ifdef CONFIG_NET_POLL_CONTROLLER
4427 /**
4428  * i40e_netpoll - A Polling 'interrupt' handler
4429  * @netdev: network interface device structure
4430  *
4431  * This is used by netconsole to send skbs without having to re-enable
4432  * interrupts.  It's not called while the normal interrupt routine is executing.
4433  **/
4434 static void i40e_netpoll(struct net_device *netdev)
4435 {
4436         struct i40e_netdev_priv *np = netdev_priv(netdev);
4437         struct i40e_vsi *vsi = np->vsi;
4438         struct i40e_pf *pf = vsi->back;
4439         int i;
4440
4441         /* if interface is down do nothing */
4442         if (test_bit(__I40E_VSI_DOWN, vsi->state))
4443                 return;
4444
4445         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4446                 for (i = 0; i < vsi->num_q_vectors; i++)
4447                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
4448         } else {
4449                 i40e_intr(pf->pdev->irq, netdev);
4450         }
4451 }
4452 #endif
4453
4454 #define I40E_QTX_ENA_WAIT_COUNT 50
4455
4456 /**
4457  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
4458  * @pf: the PF being configured
4459  * @pf_q: the PF queue
4460  * @enable: enable or disable state of the queue
4461  *
4462  * This routine will wait for the given Tx queue of the PF to reach the
4463  * enabled or disabled state.
4464  * Returns -ETIMEDOUT in case of failing to reach the requested state after
4465  * multiple retries; else will return 0 in case of success.
4466  **/
4467 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
4468 {
4469         int i;
4470         u32 tx_reg;
4471
4472         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
4473                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
4474                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
4475                         break;
4476
4477                 usleep_range(10, 20);
4478         }
4479         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
4480                 return -ETIMEDOUT;
4481
4482         return 0;
4483 }
4484
4485 /**
4486  * i40e_control_tx_q - Start or stop a particular Tx queue
4487  * @pf: the PF structure
4488  * @pf_q: the PF queue to configure
4489  * @enable: start or stop the queue
4490  *
4491  * This function enables or disables a single queue. Note that any delay
4492  * required after the operation is expected to be handled by the caller of
4493  * this function.
4494  **/
4495 static void i40e_control_tx_q(struct i40e_pf *pf, int pf_q, bool enable)
4496 {
4497         struct i40e_hw *hw = &pf->hw;
4498         u32 tx_reg;
4499         int i;
4500
4501         /* warn the TX unit of coming changes */
4502         i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
4503         if (!enable)
4504                 usleep_range(10, 20);
4505
4506         for (i = 0; i < I40E_QTX_ENA_WAIT_COUNT; i++) {
4507                 tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
4508                 if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
4509                     ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
4510                         break;
4511                 usleep_range(1000, 2000);
4512         }
4513
4514         /* Skip if the queue is already in the requested state */
4515         if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
4516                 return;
4517
4518         /* turn on/off the queue */
4519         if (enable) {
4520                 wr32(hw, I40E_QTX_HEAD(pf_q), 0);
4521                 tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
4522         } else {
4523                 tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
4524         }
4525
4526         wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
4527 }
4528
4529 /**
4530  * i40e_control_wait_tx_q - Start/stop Tx queue and wait for completion
4531  * @seid: VSI SEID
4532  * @pf: the PF structure
4533  * @pf_q: the PF queue to configure
4534  * @is_xdp: true if the queue is used for XDP
4535  * @enable: start or stop the queue
4536  **/
4537 int i40e_control_wait_tx_q(int seid, struct i40e_pf *pf, int pf_q,
4538                            bool is_xdp, bool enable)
4539 {
4540         int ret;
4541
4542         i40e_control_tx_q(pf, pf_q, enable);
4543
4544         /* wait for the change to finish */
4545         ret = i40e_pf_txq_wait(pf, pf_q, enable);
4546         if (ret) {
4547                 dev_info(&pf->pdev->dev,
4548                          "VSI seid %d %sTx ring %d %sable timeout\n",
4549                          seid, (is_xdp ? "XDP " : ""), pf_q,
4550                          (enable ? "en" : "dis"));
4551         }
4552
4553         return ret;
4554 }
4555
4556 /**
4557  * i40e_vsi_enable_tx - Start a VSI's rings
4558  * @vsi: the VSI being configured
4559  **/
4560 static int i40e_vsi_enable_tx(struct i40e_vsi *vsi)
4561 {
4562         struct i40e_pf *pf = vsi->back;
4563         int i, pf_q, ret = 0;
4564
4565         pf_q = vsi->base_queue;
4566         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4567                 ret = i40e_control_wait_tx_q(vsi->seid, pf,
4568                                              pf_q,
4569                                              false /*is xdp*/, true);
4570                 if (ret)
4571                         break;
4572
4573                 if (!i40e_enabled_xdp_vsi(vsi))
4574                         continue;
4575
4576                 ret = i40e_control_wait_tx_q(vsi->seid, pf,
4577                                              pf_q + vsi->alloc_queue_pairs,
4578                                              true /*is xdp*/, true);
4579                 if (ret)
4580                         break;
4581         }
4582         return ret;
4583 }
4584
4585 /**
4586  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
4587  * @pf: the PF being configured
4588  * @pf_q: the PF queue
4589  * @enable: enable or disable state of the queue
4590  *
4591  * This routine will wait for the given Rx queue of the PF to reach the
4592  * enabled or disabled state.
4593  * Returns -ETIMEDOUT in case of failing to reach the requested state after
4594  * multiple retries; else will return 0 in case of success.
4595  **/
4596 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
4597 {
4598         int i;
4599         u32 rx_reg;
4600
4601         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
4602                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
4603                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
4604                         break;
4605
4606                 usleep_range(10, 20);
4607         }
4608         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
4609                 return -ETIMEDOUT;
4610
4611         return 0;
4612 }
4613
4614 /**
4615  * i40e_control_rx_q - Start or stop a particular Rx queue
4616  * @pf: the PF structure
4617  * @pf_q: the PF queue to configure
4618  * @enable: start or stop the queue
4619  *
4620  * This function enables or disables a single queue. Note that
4621  * any delay required after the operation is expected to be
4622  * handled by the caller of this function.
4623  **/
4624 static void i40e_control_rx_q(struct i40e_pf *pf, int pf_q, bool enable)
4625 {
4626         struct i40e_hw *hw = &pf->hw;
4627         u32 rx_reg;
4628         int i;
4629
4630         for (i = 0; i < I40E_QTX_ENA_WAIT_COUNT; i++) {
4631                 rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
4632                 if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
4633                     ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
4634                         break;
4635                 usleep_range(1000, 2000);
4636         }
4637
4638         /* Skip if the queue is already in the requested state */
4639         if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
4640                 return;
4641
4642         /* turn on/off the queue */
4643         if (enable)
4644                 rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
4645         else
4646                 rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
4647
4648         wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
4649 }
4650
4651 /**
4652  * i40e_control_wait_rx_q
4653  * @pf: the PF structure
4654  * @pf_q: queue being configured
4655  * @enable: start or stop the rings
4656  *
4657  * This function enables or disables a single queue along with waiting
4658  * for the change to finish. The caller of this function should handle
4659  * the delays needed in the case of disabling queues.
4660  **/
4661 int i40e_control_wait_rx_q(struct i40e_pf *pf, int pf_q, bool enable)
4662 {
4663         int ret = 0;
4664
4665         i40e_control_rx_q(pf, pf_q, enable);
4666
4667         /* wait for the change to finish */
4668         ret = i40e_pf_rxq_wait(pf, pf_q, enable);
4669         if (ret)
4670                 return ret;
4671
4672         return ret;
4673 }
4674
4675 /**
4676  * i40e_vsi_enable_rx - Start a VSI's rings
4677  * @vsi: the VSI being configured
4678  **/
4679 static int i40e_vsi_enable_rx(struct i40e_vsi *vsi)
4680 {
4681         struct i40e_pf *pf = vsi->back;
4682         int i, pf_q, ret = 0;
4683
4684         pf_q = vsi->base_queue;
4685         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4686                 ret = i40e_control_wait_rx_q(pf, pf_q, true);
4687                 if (ret) {
4688                         dev_info(&pf->pdev->dev,
4689                                  "VSI seid %d Rx ring %d enable timeout\n",
4690                                  vsi->seid, pf_q);
4691                         break;
4692                 }
4693         }
4694
4695         return ret;
4696 }
4697
4698 /**
4699  * i40e_vsi_start_rings - Start a VSI's rings
4700  * @vsi: the VSI being configured
4701  **/
4702 int i40e_vsi_start_rings(struct i40e_vsi *vsi)
4703 {
4704         int ret = 0;
4705
4706         /* do rx first for enable and last for disable */
4707         ret = i40e_vsi_enable_rx(vsi);
4708         if (ret)
4709                 return ret;
4710         ret = i40e_vsi_enable_tx(vsi);
4711
4712         return ret;
4713 }
4714
4715 #define I40E_DISABLE_TX_GAP_MSEC        50
4716
4717 /**
4718  * i40e_vsi_stop_rings - Stop a VSI's rings
4719  * @vsi: the VSI being configured
4720  **/
4721 void i40e_vsi_stop_rings(struct i40e_vsi *vsi)
4722 {
4723         struct i40e_pf *pf = vsi->back;
4724         int pf_q, err, q_end;
4725
4726         /* When port TX is suspended, don't wait */
4727         if (test_bit(__I40E_PORT_SUSPENDED, vsi->back->state))
4728                 return i40e_vsi_stop_rings_no_wait(vsi);
4729
4730         q_end = vsi->base_queue + vsi->num_queue_pairs;
4731         for (pf_q = vsi->base_queue; pf_q < q_end; pf_q++)
4732                 i40e_pre_tx_queue_cfg(&pf->hw, (u32)pf_q, false);
4733
4734         for (pf_q = vsi->base_queue; pf_q < q_end; pf_q++) {
4735                 err = i40e_control_wait_rx_q(pf, pf_q, false);
4736                 if (err)
4737                         dev_info(&pf->pdev->dev,
4738                                  "VSI seid %d Rx ring %d dissable timeout\n",
4739                                  vsi->seid, pf_q);
4740         }
4741
4742         msleep(I40E_DISABLE_TX_GAP_MSEC);
4743         pf_q = vsi->base_queue;
4744         for (pf_q = vsi->base_queue; pf_q < q_end; pf_q++)
4745                 wr32(&pf->hw, I40E_QTX_ENA(pf_q), 0);
4746
4747         i40e_vsi_wait_queues_disabled(vsi);
4748 }
4749
4750 /**
4751  * i40e_vsi_stop_rings_no_wait - Stop a VSI's rings and do not delay
4752  * @vsi: the VSI being shutdown
4753  *
4754  * This function stops all the rings for a VSI but does not delay to verify
4755  * that rings have been disabled. It is expected that the caller is shutting
4756  * down multiple VSIs at once and will delay together for all the VSIs after
4757  * initiating the shutdown. This is particularly useful for shutting down lots
4758  * of VFs together. Otherwise, a large delay can be incurred while configuring
4759  * each VSI in serial.
4760  **/
4761 void i40e_vsi_stop_rings_no_wait(struct i40e_vsi *vsi)
4762 {
4763         struct i40e_pf *pf = vsi->back;
4764         int i, pf_q;
4765
4766         pf_q = vsi->base_queue;
4767         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4768                 i40e_control_tx_q(pf, pf_q, false);
4769                 i40e_control_rx_q(pf, pf_q, false);
4770         }
4771 }
4772
4773 /**
4774  * i40e_vsi_free_irq - Free the irq association with the OS
4775  * @vsi: the VSI being configured
4776  **/
4777 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
4778 {
4779         struct i40e_pf *pf = vsi->back;
4780         struct i40e_hw *hw = &pf->hw;
4781         int base = vsi->base_vector;
4782         u32 val, qp;
4783         int i;
4784
4785         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4786                 if (!vsi->q_vectors)
4787                         return;
4788
4789                 if (!vsi->irqs_ready)
4790                         return;
4791
4792                 vsi->irqs_ready = false;
4793                 for (i = 0; i < vsi->num_q_vectors; i++) {
4794                         int irq_num;
4795                         u16 vector;
4796
4797                         vector = i + base;
4798                         irq_num = pf->msix_entries[vector].vector;
4799
4800                         /* free only the irqs that were actually requested */
4801                         if (!vsi->q_vectors[i] ||
4802                             !vsi->q_vectors[i]->num_ringpairs)
4803                                 continue;
4804
4805                         /* clear the affinity notifier in the IRQ descriptor */
4806                         irq_set_affinity_notifier(irq_num, NULL);
4807                         /* remove our suggested affinity mask for this IRQ */
4808                         irq_set_affinity_hint(irq_num, NULL);
4809                         synchronize_irq(irq_num);
4810                         free_irq(irq_num, vsi->q_vectors[i]);
4811
4812                         /* Tear down the interrupt queue link list
4813                          *
4814                          * We know that they come in pairs and always
4815                          * the Rx first, then the Tx.  To clear the
4816                          * link list, stick the EOL value into the
4817                          * next_q field of the registers.
4818                          */
4819                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4820                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4821                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4822                         val |= I40E_QUEUE_END_OF_LIST
4823                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4824                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4825
4826                         while (qp != I40E_QUEUE_END_OF_LIST) {
4827                                 u32 next;
4828
4829                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4830
4831                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4832                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4833                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4834                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4835
4836                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4837                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4838
4839                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4840
4841                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4842
4843                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4844                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4845
4846                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4847                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4848                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4849                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4850
4851                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4852                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4853
4854                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4855                                 qp = next;
4856                         }
4857                 }
4858         } else {
4859                 free_irq(pf->pdev->irq, pf);
4860
4861                 val = rd32(hw, I40E_PFINT_LNKLST0);
4862                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4863                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4864                 val |= I40E_QUEUE_END_OF_LIST
4865                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4866                 wr32(hw, I40E_PFINT_LNKLST0, val);
4867
4868                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4869                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4870                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4871                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4872                          I40E_QINT_RQCTL_INTEVENT_MASK);
4873
4874                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4875                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4876
4877                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4878
4879                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4880
4881                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4882                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4883                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4884                          I40E_QINT_TQCTL_INTEVENT_MASK);
4885
4886                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4887                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4888
4889                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4890         }
4891 }
4892
4893 /**
4894  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4895  * @vsi: the VSI being configured
4896  * @v_idx: Index of vector to be freed
4897  *
4898  * This function frees the memory allocated to the q_vector.  In addition if
4899  * NAPI is enabled it will delete any references to the NAPI struct prior
4900  * to freeing the q_vector.
4901  **/
4902 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4903 {
4904         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4905         struct i40e_ring *ring;
4906
4907         if (!q_vector)
4908                 return;
4909
4910         /* disassociate q_vector from rings */
4911         i40e_for_each_ring(ring, q_vector->tx)
4912                 ring->q_vector = NULL;
4913
4914         i40e_for_each_ring(ring, q_vector->rx)
4915                 ring->q_vector = NULL;
4916
4917         /* only VSI w/ an associated netdev is set up w/ NAPI */
4918         if (vsi->netdev)
4919                 netif_napi_del(&q_vector->napi);
4920
4921         vsi->q_vectors[v_idx] = NULL;
4922
4923         kfree_rcu(q_vector, rcu);
4924 }
4925
4926 /**
4927  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4928  * @vsi: the VSI being un-configured
4929  *
4930  * This frees the memory allocated to the q_vectors and
4931  * deletes references to the NAPI struct.
4932  **/
4933 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4934 {
4935         int v_idx;
4936
4937         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4938                 i40e_free_q_vector(vsi, v_idx);
4939 }
4940
4941 /**
4942  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4943  * @pf: board private structure
4944  **/
4945 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4946 {
4947         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4948         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4949                 pci_disable_msix(pf->pdev);
4950                 kfree(pf->msix_entries);
4951                 pf->msix_entries = NULL;
4952                 kfree(pf->irq_pile);
4953                 pf->irq_pile = NULL;
4954         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4955                 pci_disable_msi(pf->pdev);
4956         }
4957         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4958 }
4959
4960 /**
4961  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4962  * @pf: board private structure
4963  *
4964  * We go through and clear interrupt specific resources and reset the structure
4965  * to pre-load conditions
4966  **/
4967 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4968 {
4969         int i;
4970
4971         if (test_bit(__I40E_MISC_IRQ_REQUESTED, pf->state))
4972                 i40e_free_misc_vector(pf);
4973
4974         i40e_put_lump(pf->irq_pile, pf->iwarp_base_vector,
4975                       I40E_IWARP_IRQ_PILE_ID);
4976
4977         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4978         for (i = 0; i < pf->num_alloc_vsi; i++)
4979                 if (pf->vsi[i])
4980                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4981         i40e_reset_interrupt_capability(pf);
4982 }
4983
4984 /**
4985  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4986  * @vsi: the VSI being configured
4987  **/
4988 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4989 {
4990         int q_idx;
4991
4992         if (!vsi->netdev)
4993                 return;
4994
4995         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
4996                 struct i40e_q_vector *q_vector = vsi->q_vectors[q_idx];
4997
4998                 if (q_vector->rx.ring || q_vector->tx.ring)
4999                         napi_enable(&q_vector->napi);
5000         }
5001 }
5002
5003 /**
5004  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
5005  * @vsi: the VSI being configured
5006  **/
5007 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
5008 {
5009         int q_idx;
5010
5011         if (!vsi->netdev)
5012                 return;
5013
5014         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
5015                 struct i40e_q_vector *q_vector = vsi->q_vectors[q_idx];
5016
5017                 if (q_vector->rx.ring || q_vector->tx.ring)
5018                         napi_disable(&q_vector->napi);
5019         }
5020 }
5021
5022 /**
5023  * i40e_vsi_close - Shut down a VSI
5024  * @vsi: the vsi to be quelled
5025  **/
5026 static void i40e_vsi_close(struct i40e_vsi *vsi)
5027 {
5028         struct i40e_pf *pf = vsi->back;
5029         if (!test_and_set_bit(__I40E_VSI_DOWN, vsi->state))
5030                 i40e_down(vsi);
5031         i40e_vsi_free_irq(vsi);
5032         i40e_vsi_free_tx_resources(vsi);
5033         i40e_vsi_free_rx_resources(vsi);
5034         vsi->current_netdev_flags = 0;
5035         set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
5036         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
5037                 set_bit(__I40E_CLIENT_RESET, pf->state);
5038 }
5039
5040 /**
5041  * i40e_quiesce_vsi - Pause a given VSI
5042  * @vsi: the VSI being paused
5043  **/
5044 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
5045 {
5046         if (test_bit(__I40E_VSI_DOWN, vsi->state))
5047                 return;
5048
5049         set_bit(__I40E_VSI_NEEDS_RESTART, vsi->state);
5050         if (vsi->netdev && netif_running(vsi->netdev))
5051                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
5052         else
5053                 i40e_vsi_close(vsi);
5054 }
5055
5056 /**
5057  * i40e_unquiesce_vsi - Resume a given VSI
5058  * @vsi: the VSI being resumed
5059  **/
5060 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
5061 {
5062         if (!test_and_clear_bit(__I40E_VSI_NEEDS_RESTART, vsi->state))
5063                 return;
5064
5065         if (vsi->netdev && netif_running(vsi->netdev))
5066                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
5067         else
5068                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
5069 }
5070
5071 /**
5072  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
5073  * @pf: the PF
5074  **/
5075 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
5076 {
5077         int v;
5078
5079         for (v = 0; v < pf->num_alloc_vsi; v++) {
5080                 if (pf->vsi[v])
5081                         i40e_quiesce_vsi(pf->vsi[v]);
5082         }
5083 }
5084
5085 /**
5086  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
5087  * @pf: the PF
5088  **/
5089 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
5090 {
5091         int v;
5092
5093         for (v = 0; v < pf->num_alloc_vsi; v++) {
5094                 if (pf->vsi[v])
5095                         i40e_unquiesce_vsi(pf->vsi[v]);
5096         }
5097 }
5098
5099 /**
5100  * i40e_vsi_wait_queues_disabled - Wait for VSI's queues to be disabled
5101  * @vsi: the VSI being configured
5102  *
5103  * Wait until all queues on a given VSI have been disabled.
5104  **/
5105 int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
5106 {
5107         struct i40e_pf *pf = vsi->back;
5108         int i, pf_q, ret;
5109
5110         pf_q = vsi->base_queue;
5111         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
5112                 /* Check and wait for the Tx queue */
5113                 ret = i40e_pf_txq_wait(pf, pf_q, false);
5114                 if (ret) {
5115                         dev_info(&pf->pdev->dev,
5116                                  "VSI seid %d Tx ring %d disable timeout\n",
5117                                  vsi->seid, pf_q);
5118                         return ret;
5119                 }
5120
5121                 if (!i40e_enabled_xdp_vsi(vsi))
5122                         goto wait_rx;
5123
5124                 /* Check and wait for the XDP Tx queue */
5125                 ret = i40e_pf_txq_wait(pf, pf_q + vsi->alloc_queue_pairs,
5126                                        false);
5127                 if (ret) {
5128                         dev_info(&pf->pdev->dev,
5129                                  "VSI seid %d XDP Tx ring %d disable timeout\n",
5130                                  vsi->seid, pf_q);
5131                         return ret;
5132                 }
5133 wait_rx:
5134                 /* Check and wait for the Rx queue */
5135                 ret = i40e_pf_rxq_wait(pf, pf_q, false);
5136                 if (ret) {
5137                         dev_info(&pf->pdev->dev,
5138                                  "VSI seid %d Rx ring %d disable timeout\n",
5139                                  vsi->seid, pf_q);
5140                         return ret;
5141                 }
5142         }
5143
5144         return 0;
5145 }
5146
5147 #ifdef CONFIG_I40E_DCB
5148 /**
5149  * i40e_pf_wait_queues_disabled - Wait for all queues of PF VSIs to be disabled
5150  * @pf: the PF
5151  *
5152  * This function waits for the queues to be in disabled state for all the
5153  * VSIs that are managed by this PF.
5154  **/
5155 static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
5156 {
5157         int v, ret = 0;
5158
5159         for (v = 0; v < pf->num_alloc_vsi; v++) {
5160                 if (pf->vsi[v]) {
5161                         ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
5162                         if (ret)
5163                                 break;
5164                 }
5165         }
5166
5167         return ret;
5168 }
5169
5170 #endif
5171
5172 /**
5173  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
5174  * @pf: pointer to PF
5175  *
5176  * Get TC map for ISCSI PF type that will include iSCSI TC
5177  * and LAN TC.
5178  **/
5179 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
5180 {
5181         struct i40e_dcb_app_priority_table app;
5182         struct i40e_hw *hw = &pf->hw;
5183         u8 enabled_tc = 1; /* TC0 is always enabled */
5184         u8 tc, i;
5185         /* Get the iSCSI APP TLV */
5186         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
5187
5188         for (i = 0; i < dcbcfg->numapps; i++) {
5189                 app = dcbcfg->app[i];
5190                 if (app.selector == I40E_APP_SEL_TCPIP &&
5191                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
5192                         tc = dcbcfg->etscfg.prioritytable[app.priority];
5193                         enabled_tc |= BIT(tc);
5194                         break;
5195                 }
5196         }
5197
5198         return enabled_tc;
5199 }
5200
5201 /**
5202  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
5203  * @dcbcfg: the corresponding DCBx configuration structure
5204  *
5205  * Return the number of TCs from given DCBx configuration
5206  **/
5207 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
5208 {
5209         int i, tc_unused = 0;
5210         u8 num_tc = 0;
5211         u8 ret = 0;
5212
5213         /* Scan the ETS Config Priority Table to find
5214          * traffic class enabled for a given priority
5215          * and create a bitmask of enabled TCs
5216          */
5217         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
5218                 num_tc |= BIT(dcbcfg->etscfg.prioritytable[i]);
5219
5220         /* Now scan the bitmask to check for
5221          * contiguous TCs starting with TC0
5222          */
5223         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5224                 if (num_tc & BIT(i)) {
5225                         if (!tc_unused) {
5226                                 ret++;
5227                         } else {
5228                                 pr_err("Non-contiguous TC - Disabling DCB\n");
5229                                 return 1;
5230                         }
5231                 } else {
5232                         tc_unused = 1;
5233                 }
5234         }
5235
5236         /* There is always at least TC0 */
5237         if (!ret)
5238                 ret = 1;
5239
5240         return ret;
5241 }
5242
5243 /**
5244  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
5245  * @dcbcfg: the corresponding DCBx configuration structure
5246  *
5247  * Query the current DCB configuration and return the number of
5248  * traffic classes enabled from the given DCBX config
5249  **/
5250 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
5251 {
5252         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
5253         u8 enabled_tc = 1;
5254         u8 i;
5255
5256         for (i = 0; i < num_tc; i++)
5257                 enabled_tc |= BIT(i);
5258
5259         return enabled_tc;
5260 }
5261
5262 /**
5263  * i40e_mqprio_get_enabled_tc - Get enabled traffic classes
5264  * @pf: PF being queried
5265  *
5266  * Query the current MQPRIO configuration and return the number of
5267  * traffic classes enabled.
5268  **/
5269 static u8 i40e_mqprio_get_enabled_tc(struct i40e_pf *pf)
5270 {
5271         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5272         u8 num_tc = vsi->mqprio_qopt.qopt.num_tc;
5273         u8 enabled_tc = 1, i;
5274
5275         for (i = 1; i < num_tc; i++)
5276                 enabled_tc |= BIT(i);
5277         return enabled_tc;
5278 }
5279
5280 /**
5281  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
5282  * @pf: PF being queried
5283  *
5284  * Return number of traffic classes enabled for the given PF
5285  **/
5286 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
5287 {
5288         struct i40e_hw *hw = &pf->hw;
5289         u8 i, enabled_tc = 1;
5290         u8 num_tc = 0;
5291         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
5292
5293         if (pf->flags & I40E_FLAG_TC_MQPRIO)
5294                 return pf->vsi[pf->lan_vsi]->mqprio_qopt.qopt.num_tc;
5295
5296         /* If neither MQPRIO nor DCB is enabled, then always use single TC */
5297         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
5298                 return 1;
5299
5300         /* SFP mode will be enabled for all TCs on port */
5301         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
5302                 return i40e_dcb_get_num_tc(dcbcfg);
5303
5304         /* MFP mode return count of enabled TCs for this PF */
5305         if (pf->hw.func_caps.iscsi)
5306                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
5307         else
5308                 return 1; /* Only TC0 */
5309
5310         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5311                 if (enabled_tc & BIT(i))
5312                         num_tc++;
5313         }
5314         return num_tc;
5315 }
5316
5317 /**
5318  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
5319  * @pf: PF being queried
5320  *
5321  * Return a bitmap for enabled traffic classes for this PF.
5322  **/
5323 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
5324 {
5325         if (pf->flags & I40E_FLAG_TC_MQPRIO)
5326                 return i40e_mqprio_get_enabled_tc(pf);
5327
5328         /* If neither MQPRIO nor DCB is enabled for this PF then just return
5329          * default TC
5330          */
5331         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
5332                 return I40E_DEFAULT_TRAFFIC_CLASS;
5333
5334         /* SFP mode we want PF to be enabled for all TCs */
5335         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
5336                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
5337
5338         /* MFP enabled and iSCSI PF type */
5339         if (pf->hw.func_caps.iscsi)
5340                 return i40e_get_iscsi_tc_map(pf);
5341         else
5342                 return I40E_DEFAULT_TRAFFIC_CLASS;
5343 }
5344
5345 /**
5346  * i40e_vsi_get_bw_info - Query VSI BW Information
5347  * @vsi: the VSI being queried
5348  *
5349  * Returns 0 on success, negative value on failure
5350  **/
5351 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
5352 {
5353         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
5354         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
5355         struct i40e_pf *pf = vsi->back;
5356         struct i40e_hw *hw = &pf->hw;
5357         i40e_status ret;
5358         u32 tc_bw_max;
5359         int i;
5360
5361         /* Get the VSI level BW configuration */
5362         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
5363         if (ret) {
5364                 dev_info(&pf->pdev->dev,
5365                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
5366                          i40e_stat_str(&pf->hw, ret),
5367                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5368                 return -EINVAL;
5369         }
5370
5371         /* Get the VSI level BW configuration per TC */
5372         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
5373                                                NULL);
5374         if (ret) {
5375                 dev_info(&pf->pdev->dev,
5376                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
5377                          i40e_stat_str(&pf->hw, ret),
5378                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5379                 return -EINVAL;
5380         }
5381
5382         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
5383                 dev_info(&pf->pdev->dev,
5384                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
5385                          bw_config.tc_valid_bits,
5386                          bw_ets_config.tc_valid_bits);
5387                 /* Still continuing */
5388         }
5389
5390         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
5391         vsi->bw_max_quanta = bw_config.max_bw;
5392         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
5393                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
5394         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5395                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
5396                 vsi->bw_ets_limit_credits[i] =
5397                                         le16_to_cpu(bw_ets_config.credits[i]);
5398                 /* 3 bits out of 4 for each TC */
5399                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
5400         }
5401
5402         return 0;
5403 }
5404
5405 /**
5406  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
5407  * @vsi: the VSI being configured
5408  * @enabled_tc: TC bitmap
5409  * @bw_share: BW shared credits per TC
5410  *
5411  * Returns 0 on success, negative value on failure
5412  **/
5413 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
5414                                        u8 *bw_share)
5415 {
5416         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
5417         struct i40e_pf *pf = vsi->back;
5418         i40e_status ret;
5419         int i;
5420
5421         /* There is no need to reset BW when mqprio mode is on.  */
5422         if (pf->flags & I40E_FLAG_TC_MQPRIO)
5423                 return 0;
5424         if (!vsi->mqprio_qopt.qopt.hw && !(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5425                 ret = i40e_set_bw_limit(vsi, vsi->seid, 0);
5426                 if (ret)
5427                         dev_info(&pf->pdev->dev,
5428                                  "Failed to reset tx rate for vsi->seid %u\n",
5429                                  vsi->seid);
5430                 return ret;
5431         }
5432         bw_data.tc_valid_bits = enabled_tc;
5433         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
5434                 bw_data.tc_bw_credits[i] = bw_share[i];
5435
5436         ret = i40e_aq_config_vsi_tc_bw(&pf->hw, vsi->seid, &bw_data, NULL);
5437         if (ret) {
5438                 dev_info(&pf->pdev->dev,
5439                          "AQ command Config VSI BW allocation per TC failed = %d\n",
5440                          pf->hw.aq.asq_last_status);
5441                 return -EINVAL;
5442         }
5443
5444         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
5445                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
5446
5447         return 0;
5448 }
5449
5450 /**
5451  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
5452  * @vsi: the VSI being configured
5453  * @enabled_tc: TC map to be enabled
5454  *
5455  **/
5456 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
5457 {
5458         struct net_device *netdev = vsi->netdev;
5459         struct i40e_pf *pf = vsi->back;
5460         struct i40e_hw *hw = &pf->hw;
5461         u8 netdev_tc = 0;
5462         int i;
5463         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
5464
5465         if (!netdev)
5466                 return;
5467
5468         if (!enabled_tc) {
5469                 netdev_reset_tc(netdev);
5470                 return;
5471         }
5472
5473         /* Set up actual enabled TCs on the VSI */
5474         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
5475                 return;
5476
5477         /* set per TC queues for the VSI */
5478         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5479                 /* Only set TC queues for enabled tcs
5480                  *
5481                  * e.g. For a VSI that has TC0 and TC3 enabled the
5482                  * enabled_tc bitmap would be 0x00001001; the driver
5483                  * will set the numtc for netdev as 2 that will be
5484                  * referenced by the netdev layer as TC 0 and 1.
5485                  */
5486                 if (vsi->tc_config.enabled_tc & BIT(i))
5487                         netdev_set_tc_queue(netdev,
5488                                         vsi->tc_config.tc_info[i].netdev_tc,
5489                                         vsi->tc_config.tc_info[i].qcount,
5490                                         vsi->tc_config.tc_info[i].qoffset);
5491         }
5492
5493         if (pf->flags & I40E_FLAG_TC_MQPRIO)
5494                 return;
5495
5496         /* Assign UP2TC map for the VSI */
5497         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
5498                 /* Get the actual TC# for the UP */
5499                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
5500                 /* Get the mapped netdev TC# for the UP */
5501                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
5502                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
5503         }
5504 }
5505
5506 /**
5507  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
5508  * @vsi: the VSI being configured
5509  * @ctxt: the ctxt buffer returned from AQ VSI update param command
5510  **/
5511 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
5512                                       struct i40e_vsi_context *ctxt)
5513 {
5514         /* copy just the sections touched not the entire info
5515          * since not all sections are valid as returned by
5516          * update vsi params
5517          */
5518         vsi->info.mapping_flags = ctxt->info.mapping_flags;
5519         memcpy(&vsi->info.queue_mapping,
5520                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
5521         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
5522                sizeof(vsi->info.tc_mapping));
5523 }
5524
5525 /**
5526  * i40e_update_adq_vsi_queues - update queue mapping for ADq VSI
5527  * @vsi: the VSI being reconfigured
5528  * @vsi_offset: offset from main VF VSI
5529  */
5530 int i40e_update_adq_vsi_queues(struct i40e_vsi *vsi, int vsi_offset)
5531 {
5532         struct i40e_vsi_context ctxt = {};
5533         struct i40e_pf *pf;
5534         struct i40e_hw *hw;
5535         int ret;
5536
5537         if (!vsi)
5538                 return I40E_ERR_PARAM;
5539         pf = vsi->back;
5540         hw = &pf->hw;
5541
5542         ctxt.seid = vsi->seid;
5543         ctxt.pf_num = hw->pf_id;
5544         ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id + vsi_offset;
5545         ctxt.uplink_seid = vsi->uplink_seid;
5546         ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
5547         ctxt.flags = I40E_AQ_VSI_TYPE_VF;
5548         ctxt.info = vsi->info;
5549
5550         i40e_vsi_setup_queue_map(vsi, &ctxt, vsi->tc_config.enabled_tc,
5551                                  false);
5552         if (vsi->reconfig_rss) {
5553                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
5554                                       vsi->num_queue_pairs);
5555                 ret = i40e_vsi_config_rss(vsi);
5556                 if (ret) {
5557                         dev_info(&pf->pdev->dev, "Failed to reconfig rss for num_queues\n");
5558                         return ret;
5559                 }
5560                 vsi->reconfig_rss = false;
5561         }
5562
5563         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
5564         if (ret) {
5565                 dev_info(&pf->pdev->dev, "Update vsi config failed, err %s aq_err %s\n",
5566                          i40e_stat_str(hw, ret),
5567                          i40e_aq_str(hw, hw->aq.asq_last_status));
5568                 return ret;
5569         }
5570         /* update the local VSI info with updated queue map */
5571         i40e_vsi_update_queue_map(vsi, &ctxt);
5572         vsi->info.valid_sections = 0;
5573
5574         return ret;
5575 }
5576
5577 /**
5578  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
5579  * @vsi: VSI to be configured
5580  * @enabled_tc: TC bitmap
5581  *
5582  * This configures a particular VSI for TCs that are mapped to the
5583  * given TC bitmap. It uses default bandwidth share for TCs across
5584  * VSIs to configure TC for a particular VSI.
5585  *
5586  * NOTE:
5587  * It is expected that the VSI queues have been quisced before calling
5588  * this function.
5589  **/
5590 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
5591 {
5592         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
5593         struct i40e_pf *pf = vsi->back;
5594         struct i40e_hw *hw = &pf->hw;
5595         struct i40e_vsi_context ctxt;
5596         int ret = 0;
5597         int i;
5598
5599         /* Check if enabled_tc is same as existing or new TCs */
5600         if (vsi->tc_config.enabled_tc == enabled_tc &&
5601             vsi->mqprio_qopt.mode != TC_MQPRIO_MODE_CHANNEL)
5602                 return ret;
5603
5604         /* Enable ETS TCs with equal BW Share for now across all VSIs */
5605         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5606                 if (enabled_tc & BIT(i))
5607                         bw_share[i] = 1;
5608         }
5609
5610         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
5611         if (ret) {
5612                 struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
5613
5614                 dev_info(&pf->pdev->dev,
5615                          "Failed configuring TC map %d for VSI %d\n",
5616                          enabled_tc, vsi->seid);
5617                 ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid,
5618                                                   &bw_config, NULL);
5619                 if (ret) {
5620                         dev_info(&pf->pdev->dev,
5621                                  "Failed querying vsi bw info, err %s aq_err %s\n",
5622                                  i40e_stat_str(hw, ret),
5623                                  i40e_aq_str(hw, hw->aq.asq_last_status));
5624                         goto out;
5625                 }
5626                 if ((bw_config.tc_valid_bits & enabled_tc) != enabled_tc) {
5627                         u8 valid_tc = bw_config.tc_valid_bits & enabled_tc;
5628
5629                         if (!valid_tc)
5630                                 valid_tc = bw_config.tc_valid_bits;
5631                         /* Always enable TC0, no matter what */
5632                         valid_tc |= 1;
5633                         dev_info(&pf->pdev->dev,
5634                                  "Requested tc 0x%x, but FW reports 0x%x as valid. Attempting to use 0x%x.\n",
5635                                  enabled_tc, bw_config.tc_valid_bits, valid_tc);
5636                         enabled_tc = valid_tc;
5637                 }
5638
5639                 ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
5640                 if (ret) {
5641                         dev_err(&pf->pdev->dev,
5642                                 "Unable to  configure TC map %d for VSI %d\n",
5643                                 enabled_tc, vsi->seid);
5644                         goto out;
5645                 }
5646         }
5647
5648         /* Update Queue Pairs Mapping for currently enabled UPs */
5649         ctxt.seid = vsi->seid;
5650         ctxt.pf_num = vsi->back->hw.pf_id;
5651         ctxt.vf_num = 0;
5652         ctxt.uplink_seid = vsi->uplink_seid;
5653         ctxt.info = vsi->info;
5654         if (vsi->back->flags & I40E_FLAG_TC_MQPRIO) {
5655                 ret = i40e_vsi_setup_queue_map_mqprio(vsi, &ctxt, enabled_tc);
5656                 if (ret)
5657                         goto out;
5658         } else {
5659                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
5660         }
5661
5662         /* On destroying the qdisc, reset vsi->rss_size, as number of enabled
5663          * queues changed.
5664          */
5665         if (!vsi->mqprio_qopt.qopt.hw && vsi->reconfig_rss) {
5666                 vsi->rss_size = min_t(int, vsi->back->alloc_rss_size,
5667                                       vsi->num_queue_pairs);
5668                 ret = i40e_vsi_config_rss(vsi);
5669                 if (ret) {
5670                         dev_info(&vsi->back->pdev->dev,
5671                                  "Failed to reconfig rss for num_queues\n");
5672                         return ret;
5673                 }
5674                 vsi->reconfig_rss = false;
5675         }
5676         if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
5677                 ctxt.info.valid_sections |=
5678                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
5679                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
5680         }
5681
5682         /* Update the VSI after updating the VSI queue-mapping
5683          * information
5684          */
5685         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
5686         if (ret) {
5687                 dev_info(&pf->pdev->dev,
5688                          "Update vsi tc config failed, err %s aq_err %s\n",
5689                          i40e_stat_str(hw, ret),
5690                          i40e_aq_str(hw, hw->aq.asq_last_status));
5691                 goto out;
5692         }
5693         /* update the local VSI info with updated queue map */
5694         i40e_vsi_update_queue_map(vsi, &ctxt);
5695         vsi->info.valid_sections = 0;
5696
5697         /* Update current VSI BW information */
5698         ret = i40e_vsi_get_bw_info(vsi);
5699         if (ret) {
5700                 dev_info(&pf->pdev->dev,
5701                          "Failed updating vsi bw info, err %s aq_err %s\n",
5702                          i40e_stat_str(hw, ret),
5703                          i40e_aq_str(hw, hw->aq.asq_last_status));
5704                 goto out;
5705         }
5706
5707         /* Update the netdev TC setup */
5708         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
5709 out:
5710         return ret;
5711 }
5712
5713 /**
5714  * i40e_get_link_speed - Returns link speed for the interface
5715  * @vsi: VSI to be configured
5716  *
5717  **/
5718 static int i40e_get_link_speed(struct i40e_vsi *vsi)
5719 {
5720         struct i40e_pf *pf = vsi->back;
5721
5722         switch (pf->hw.phy.link_info.link_speed) {
5723         case I40E_LINK_SPEED_40GB:
5724                 return 40000;
5725         case I40E_LINK_SPEED_25GB:
5726                 return 25000;
5727         case I40E_LINK_SPEED_20GB:
5728                 return 20000;
5729         case I40E_LINK_SPEED_10GB:
5730                 return 10000;
5731         case I40E_LINK_SPEED_1GB:
5732                 return 1000;
5733         default:
5734                 return -EINVAL;
5735         }
5736 }
5737
5738 /**
5739  * i40e_bw_bytes_to_mbits - Convert max_tx_rate from bytes to mbits
5740  * @vsi: Pointer to vsi structure
5741  * @max_tx_rate: max TX rate in bytes to be converted into Mbits
5742  *
5743  * Helper function to convert units before send to set BW limit
5744  **/
5745 static u64 i40e_bw_bytes_to_mbits(struct i40e_vsi *vsi, u64 max_tx_rate)
5746 {
5747         if (max_tx_rate < I40E_BW_MBPS_DIVISOR) {
5748                 dev_warn(&vsi->back->pdev->dev,
5749                          "Setting max tx rate to minimum usable value of 50Mbps.\n");
5750                 max_tx_rate = I40E_BW_CREDIT_DIVISOR;
5751         } else {
5752                 do_div(max_tx_rate, I40E_BW_MBPS_DIVISOR);
5753         }
5754
5755         return max_tx_rate;
5756 }
5757
5758 /**
5759  * i40e_set_bw_limit - setup BW limit for Tx traffic based on max_tx_rate
5760  * @vsi: VSI to be configured
5761  * @seid: seid of the channel/VSI
5762  * @max_tx_rate: max TX rate to be configured as BW limit
5763  *
5764  * Helper function to set BW limit for a given VSI
5765  **/
5766 int i40e_set_bw_limit(struct i40e_vsi *vsi, u16 seid, u64 max_tx_rate)
5767 {
5768         struct i40e_pf *pf = vsi->back;
5769         u64 credits = 0;
5770         int speed = 0;
5771         int ret = 0;
5772
5773         speed = i40e_get_link_speed(vsi);
5774         if (max_tx_rate > speed) {
5775                 dev_err(&pf->pdev->dev,
5776                         "Invalid max tx rate %llu specified for VSI seid %d.",
5777                         max_tx_rate, seid);
5778                 return -EINVAL;
5779         }
5780         if (max_tx_rate && max_tx_rate < I40E_BW_CREDIT_DIVISOR) {
5781                 dev_warn(&pf->pdev->dev,
5782                          "Setting max tx rate to minimum usable value of 50Mbps.\n");
5783                 max_tx_rate = I40E_BW_CREDIT_DIVISOR;
5784         }
5785
5786         /* Tx rate credits are in values of 50Mbps, 0 is disabled */
5787         credits = max_tx_rate;
5788         do_div(credits, I40E_BW_CREDIT_DIVISOR);
5789         ret = i40e_aq_config_vsi_bw_limit(&pf->hw, seid, credits,
5790                                           I40E_MAX_BW_INACTIVE_ACCUM, NULL);
5791         if (ret)
5792                 dev_err(&pf->pdev->dev,
5793                         "Failed set tx rate (%llu Mbps) for vsi->seid %u, err %s aq_err %s\n",
5794                         max_tx_rate, seid, i40e_stat_str(&pf->hw, ret),
5795                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5796         return ret;
5797 }
5798
5799 /**
5800  * i40e_remove_queue_channels - Remove queue channels for the TCs
5801  * @vsi: VSI to be configured
5802  *
5803  * Remove queue channels for the TCs
5804  **/
5805 static void i40e_remove_queue_channels(struct i40e_vsi *vsi)
5806 {
5807         enum i40e_admin_queue_err last_aq_status;
5808         struct i40e_cloud_filter *cfilter;
5809         struct i40e_channel *ch, *ch_tmp;
5810         struct i40e_pf *pf = vsi->back;
5811         struct hlist_node *node;
5812         int ret, i;
5813
5814         /* Reset rss size that was stored when reconfiguring rss for
5815          * channel VSIs with non-power-of-2 queue count.
5816          */
5817         vsi->current_rss_size = 0;
5818
5819         /* perform cleanup for channels if they exist */
5820         if (list_empty(&vsi->ch_list))
5821                 return;
5822
5823         list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
5824                 struct i40e_vsi *p_vsi;
5825
5826                 list_del(&ch->list);
5827                 p_vsi = ch->parent_vsi;
5828                 if (!p_vsi || !ch->initialized) {
5829                         kfree(ch);
5830                         continue;
5831                 }
5832                 /* Reset queue contexts */
5833                 for (i = 0; i < ch->num_queue_pairs; i++) {
5834                         struct i40e_ring *tx_ring, *rx_ring;
5835                         u16 pf_q;
5836
5837                         pf_q = ch->base_queue + i;
5838                         tx_ring = vsi->tx_rings[pf_q];
5839                         tx_ring->ch = NULL;
5840
5841                         rx_ring = vsi->rx_rings[pf_q];
5842                         rx_ring->ch = NULL;
5843                 }
5844
5845                 /* Reset BW configured for this VSI via mqprio */
5846                 ret = i40e_set_bw_limit(vsi, ch->seid, 0);
5847                 if (ret)
5848                         dev_info(&vsi->back->pdev->dev,
5849                                  "Failed to reset tx rate for ch->seid %u\n",
5850                                  ch->seid);
5851
5852                 /* delete cloud filters associated with this channel */
5853                 hlist_for_each_entry_safe(cfilter, node,
5854                                           &pf->cloud_filter_list, cloud_node) {
5855                         if (cfilter->seid != ch->seid)
5856                                 continue;
5857
5858                         hash_del(&cfilter->cloud_node);
5859                         if (cfilter->dst_port)
5860                                 ret = i40e_add_del_cloud_filter_big_buf(vsi,
5861                                                                         cfilter,
5862                                                                         false);
5863                         else
5864                                 ret = i40e_add_del_cloud_filter(vsi, cfilter,
5865                                                                 false);
5866                         last_aq_status = pf->hw.aq.asq_last_status;
5867                         if (ret)
5868                                 dev_info(&pf->pdev->dev,
5869                                          "Failed to delete cloud filter, err %s aq_err %s\n",
5870                                          i40e_stat_str(&pf->hw, ret),
5871                                          i40e_aq_str(&pf->hw, last_aq_status));
5872                         kfree(cfilter);
5873                 }
5874
5875                 /* delete VSI from FW */
5876                 ret = i40e_aq_delete_element(&vsi->back->hw, ch->seid,
5877                                              NULL);
5878                 if (ret)
5879                         dev_err(&vsi->back->pdev->dev,
5880                                 "unable to remove channel (%d) for parent VSI(%d)\n",
5881                                 ch->seid, p_vsi->seid);
5882                 kfree(ch);
5883         }
5884         INIT_LIST_HEAD(&vsi->ch_list);
5885 }
5886
5887 /**
5888  * i40e_get_max_queues_for_channel
5889  * @vsi: ptr to VSI to which channels are associated with
5890  *
5891  * Helper function which returns max value among the queue counts set on the
5892  * channels/TCs created.
5893  **/
5894 static int i40e_get_max_queues_for_channel(struct i40e_vsi *vsi)
5895 {
5896         struct i40e_channel *ch, *ch_tmp;
5897         int max = 0;
5898
5899         list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
5900                 if (!ch->initialized)
5901                         continue;
5902                 if (ch->num_queue_pairs > max)
5903                         max = ch->num_queue_pairs;
5904         }
5905
5906         return max;
5907 }
5908
5909 /**
5910  * i40e_validate_num_queues - validate num_queues w.r.t channel
5911  * @pf: ptr to PF device
5912  * @num_queues: number of queues
5913  * @vsi: the parent VSI
5914  * @reconfig_rss: indicates should the RSS be reconfigured or not
5915  *
5916  * This function validates number of queues in the context of new channel
5917  * which is being established and determines if RSS should be reconfigured
5918  * or not for parent VSI.
5919  **/
5920 static int i40e_validate_num_queues(struct i40e_pf *pf, int num_queues,
5921                                     struct i40e_vsi *vsi, bool *reconfig_rss)
5922 {
5923         int max_ch_queues;
5924
5925         if (!reconfig_rss)
5926                 return -EINVAL;
5927
5928         *reconfig_rss = false;
5929         if (vsi->current_rss_size) {
5930                 if (num_queues > vsi->current_rss_size) {
5931                         dev_dbg(&pf->pdev->dev,
5932                                 "Error: num_queues (%d) > vsi's current_size(%d)\n",
5933                                 num_queues, vsi->current_rss_size);
5934                         return -EINVAL;
5935                 } else if ((num_queues < vsi->current_rss_size) &&
5936                            (!is_power_of_2(num_queues))) {
5937                         dev_dbg(&pf->pdev->dev,
5938                                 "Error: num_queues (%d) < vsi's current_size(%d), but not power of 2\n",
5939                                 num_queues, vsi->current_rss_size);
5940                         return -EINVAL;
5941                 }
5942         }
5943
5944         if (!is_power_of_2(num_queues)) {
5945                 /* Find the max num_queues configured for channel if channel
5946                  * exist.
5947                  * if channel exist, then enforce 'num_queues' to be more than
5948                  * max ever queues configured for channel.
5949                  */
5950                 max_ch_queues = i40e_get_max_queues_for_channel(vsi);
5951                 if (num_queues < max_ch_queues) {
5952                         dev_dbg(&pf->pdev->dev,
5953                                 "Error: num_queues (%d) < max queues configured for channel(%d)\n",
5954                                 num_queues, max_ch_queues);
5955                         return -EINVAL;
5956                 }
5957                 *reconfig_rss = true;
5958         }
5959
5960         return 0;
5961 }
5962
5963 /**
5964  * i40e_vsi_reconfig_rss - reconfig RSS based on specified rss_size
5965  * @vsi: the VSI being setup
5966  * @rss_size: size of RSS, accordingly LUT gets reprogrammed
5967  *
5968  * This function reconfigures RSS by reprogramming LUTs using 'rss_size'
5969  **/
5970 static int i40e_vsi_reconfig_rss(struct i40e_vsi *vsi, u16 rss_size)
5971 {
5972         struct i40e_pf *pf = vsi->back;
5973         u8 seed[I40E_HKEY_ARRAY_SIZE];
5974         struct i40e_hw *hw = &pf->hw;
5975         int local_rss_size;
5976         u8 *lut;
5977         int ret;
5978
5979         if (!vsi->rss_size)
5980                 return -EINVAL;
5981
5982         if (rss_size > vsi->rss_size)
5983                 return -EINVAL;
5984
5985         local_rss_size = min_t(int, vsi->rss_size, rss_size);
5986         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
5987         if (!lut)
5988                 return -ENOMEM;
5989
5990         /* Ignoring user configured lut if there is one */
5991         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, local_rss_size);
5992
5993         /* Use user configured hash key if there is one, otherwise
5994          * use default.
5995          */
5996         if (vsi->rss_hkey_user)
5997                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
5998         else
5999                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
6000
6001         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
6002         if (ret) {
6003                 dev_info(&pf->pdev->dev,
6004                          "Cannot set RSS lut, err %s aq_err %s\n",
6005                          i40e_stat_str(hw, ret),
6006                          i40e_aq_str(hw, hw->aq.asq_last_status));
6007                 kfree(lut);
6008                 return ret;
6009         }
6010         kfree(lut);
6011
6012         /* Do the update w.r.t. storing rss_size */
6013         if (!vsi->orig_rss_size)
6014                 vsi->orig_rss_size = vsi->rss_size;
6015         vsi->current_rss_size = local_rss_size;
6016
6017         return ret;
6018 }
6019
6020 /**
6021  * i40e_channel_setup_queue_map - Setup a channel queue map
6022  * @pf: ptr to PF device
6023  * @ctxt: VSI context structure
6024  * @ch: ptr to channel structure
6025  *
6026  * Setup queue map for a specific channel
6027  **/
6028 static void i40e_channel_setup_queue_map(struct i40e_pf *pf,
6029                                          struct i40e_vsi_context *ctxt,
6030                                          struct i40e_channel *ch)
6031 {
6032         u16 qcount, qmap, sections = 0;
6033         u8 offset = 0;
6034         int pow;
6035
6036         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
6037         sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
6038
6039         qcount = min_t(int, ch->num_queue_pairs, pf->num_lan_msix);
6040         ch->num_queue_pairs = qcount;
6041
6042         /* find the next higher power-of-2 of num queue pairs */
6043         pow = ilog2(qcount);
6044         if (!is_power_of_2(qcount))
6045                 pow++;
6046
6047         qmap = (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
6048                 (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
6049
6050         /* Setup queue TC[0].qmap for given VSI context */
6051         ctxt->info.tc_mapping[0] = cpu_to_le16(qmap);
6052
6053         ctxt->info.up_enable_bits = 0x1; /* TC0 enabled */
6054         ctxt->info.mapping_flags |= cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
6055         ctxt->info.queue_mapping[0] = cpu_to_le16(ch->base_queue);
6056         ctxt->info.valid_sections |= cpu_to_le16(sections);
6057 }
6058
6059 /**
6060  * i40e_add_channel - add a channel by adding VSI
6061  * @pf: ptr to PF device
6062  * @uplink_seid: underlying HW switching element (VEB) ID
6063  * @ch: ptr to channel structure
6064  *
6065  * Add a channel (VSI) using add_vsi and queue_map
6066  **/
6067 static int i40e_add_channel(struct i40e_pf *pf, u16 uplink_seid,
6068                             struct i40e_channel *ch)
6069 {
6070         struct i40e_hw *hw = &pf->hw;
6071         struct i40e_vsi_context ctxt;
6072         u8 enabled_tc = 0x1; /* TC0 enabled */
6073         int ret;
6074
6075         if (ch->type != I40E_VSI_VMDQ2) {
6076                 dev_info(&pf->pdev->dev,
6077                          "add new vsi failed, ch->type %d\n", ch->type);
6078                 return -EINVAL;
6079         }
6080
6081         memset(&ctxt, 0, sizeof(ctxt));
6082         ctxt.pf_num = hw->pf_id;
6083         ctxt.vf_num = 0;
6084         ctxt.uplink_seid = uplink_seid;
6085         ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
6086         if (ch->type == I40E_VSI_VMDQ2)
6087                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
6088
6089         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED) {
6090                 ctxt.info.valid_sections |=
6091                      cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6092                 ctxt.info.switch_id =
6093                    cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6094         }
6095
6096         /* Set queue map for a given VSI context */
6097         i40e_channel_setup_queue_map(pf, &ctxt, ch);
6098
6099         /* Now time to create VSI */
6100         ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
6101         if (ret) {
6102                 dev_info(&pf->pdev->dev,
6103                          "add new vsi failed, err %s aq_err %s\n",
6104                          i40e_stat_str(&pf->hw, ret),
6105                          i40e_aq_str(&pf->hw,
6106                                      pf->hw.aq.asq_last_status));
6107                 return -ENOENT;
6108         }
6109
6110         /* Success, update channel, set enabled_tc only if the channel
6111          * is not a macvlan
6112          */
6113         ch->enabled_tc = !i40e_is_channel_macvlan(ch) && enabled_tc;
6114         ch->seid = ctxt.seid;
6115         ch->vsi_number = ctxt.vsi_number;
6116         ch->stat_counter_idx = le16_to_cpu(ctxt.info.stat_counter_idx);
6117
6118         /* copy just the sections touched not the entire info
6119          * since not all sections are valid as returned by
6120          * update vsi params
6121          */
6122         ch->info.mapping_flags = ctxt.info.mapping_flags;
6123         memcpy(&ch->info.queue_mapping,
6124                &ctxt.info.queue_mapping, sizeof(ctxt.info.queue_mapping));
6125         memcpy(&ch->info.tc_mapping, ctxt.info.tc_mapping,
6126                sizeof(ctxt.info.tc_mapping));
6127
6128         return 0;
6129 }
6130
6131 static int i40e_channel_config_bw(struct i40e_vsi *vsi, struct i40e_channel *ch,
6132                                   u8 *bw_share)
6133 {
6134         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
6135         i40e_status ret;
6136         int i;
6137
6138         bw_data.tc_valid_bits = ch->enabled_tc;
6139         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
6140                 bw_data.tc_bw_credits[i] = bw_share[i];
6141
6142         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, ch->seid,
6143                                        &bw_data, NULL);
6144         if (ret) {
6145                 dev_info(&vsi->back->pdev->dev,
6146                          "Config VSI BW allocation per TC failed, aq_err: %d for new_vsi->seid %u\n",
6147                          vsi->back->hw.aq.asq_last_status, ch->seid);
6148                 return -EINVAL;
6149         }
6150
6151         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
6152                 ch->info.qs_handle[i] = bw_data.qs_handles[i];
6153
6154         return 0;
6155 }
6156
6157 /**
6158  * i40e_channel_config_tx_ring - config TX ring associated with new channel
6159  * @pf: ptr to PF device
6160  * @vsi: the VSI being setup
6161  * @ch: ptr to channel structure
6162  *
6163  * Configure TX rings associated with channel (VSI) since queues are being
6164  * from parent VSI.
6165  **/
6166 static int i40e_channel_config_tx_ring(struct i40e_pf *pf,
6167                                        struct i40e_vsi *vsi,
6168                                        struct i40e_channel *ch)
6169 {
6170         i40e_status ret;
6171         int i;
6172         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
6173
6174         /* Enable ETS TCs with equal BW Share for now across all VSIs */
6175         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6176                 if (ch->enabled_tc & BIT(i))
6177                         bw_share[i] = 1;
6178         }
6179
6180         /* configure BW for new VSI */
6181         ret = i40e_channel_config_bw(vsi, ch, bw_share);
6182         if (ret) {
6183                 dev_info(&vsi->back->pdev->dev,
6184                          "Failed configuring TC map %d for channel (seid %u)\n",
6185                          ch->enabled_tc, ch->seid);
6186                 return ret;
6187         }
6188
6189         for (i = 0; i < ch->num_queue_pairs; i++) {
6190                 struct i40e_ring *tx_ring, *rx_ring;
6191                 u16 pf_q;
6192
6193                 pf_q = ch->base_queue + i;
6194
6195                 /* Get to TX ring ptr of main VSI, for re-setup TX queue
6196                  * context
6197                  */
6198                 tx_ring = vsi->tx_rings[pf_q];
6199                 tx_ring->ch = ch;
6200
6201                 /* Get the RX ring ptr */
6202                 rx_ring = vsi->rx_rings[pf_q];
6203                 rx_ring->ch = ch;
6204         }
6205
6206         return 0;
6207 }
6208
6209 /**
6210  * i40e_setup_hw_channel - setup new channel
6211  * @pf: ptr to PF device
6212  * @vsi: the VSI being setup
6213  * @ch: ptr to channel structure
6214  * @uplink_seid: underlying HW switching element (VEB) ID
6215  * @type: type of channel to be created (VMDq2/VF)
6216  *
6217  * Setup new channel (VSI) based on specified type (VMDq2/VF)
6218  * and configures TX rings accordingly
6219  **/
6220 static inline int i40e_setup_hw_channel(struct i40e_pf *pf,
6221                                         struct i40e_vsi *vsi,
6222                                         struct i40e_channel *ch,
6223                                         u16 uplink_seid, u8 type)
6224 {
6225         int ret;
6226
6227         ch->initialized = false;
6228         ch->base_queue = vsi->next_base_queue;
6229         ch->type = type;
6230
6231         /* Proceed with creation of channel (VMDq2) VSI */
6232         ret = i40e_add_channel(pf, uplink_seid, ch);
6233         if (ret) {
6234                 dev_info(&pf->pdev->dev,
6235                          "failed to add_channel using uplink_seid %u\n",
6236                          uplink_seid);
6237                 return ret;
6238         }
6239
6240         /* Mark the successful creation of channel */
6241         ch->initialized = true;
6242
6243         /* Reconfigure TX queues using QTX_CTL register */
6244         ret = i40e_channel_config_tx_ring(pf, vsi, ch);
6245         if (ret) {
6246                 dev_info(&pf->pdev->dev,
6247                          "failed to configure TX rings for channel %u\n",
6248                          ch->seid);
6249                 return ret;
6250         }
6251
6252         /* update 'next_base_queue' */
6253         vsi->next_base_queue = vsi->next_base_queue + ch->num_queue_pairs;
6254         dev_dbg(&pf->pdev->dev,
6255                 "Added channel: vsi_seid %u, vsi_number %u, stat_counter_idx %u, num_queue_pairs %u, pf->next_base_queue %d\n",
6256                 ch->seid, ch->vsi_number, ch->stat_counter_idx,
6257                 ch->num_queue_pairs,
6258                 vsi->next_base_queue);
6259         return ret;
6260 }
6261
6262 /**
6263  * i40e_setup_channel - setup new channel using uplink element
6264  * @pf: ptr to PF device
6265  * @vsi: pointer to the VSI to set up the channel within
6266  * @ch: ptr to channel structure
6267  *
6268  * Setup new channel (VSI) based on specified type (VMDq2/VF)
6269  * and uplink switching element (uplink_seid)
6270  **/
6271 static bool i40e_setup_channel(struct i40e_pf *pf, struct i40e_vsi *vsi,
6272                                struct i40e_channel *ch)
6273 {
6274         u8 vsi_type;
6275         u16 seid;
6276         int ret;
6277
6278         if (vsi->type == I40E_VSI_MAIN) {
6279                 vsi_type = I40E_VSI_VMDQ2;
6280         } else {
6281                 dev_err(&pf->pdev->dev, "unsupported parent vsi type(%d)\n",
6282                         vsi->type);
6283                 return false;
6284         }
6285
6286         /* underlying switching element */
6287         seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6288
6289         /* create channel (VSI), configure TX rings */
6290         ret = i40e_setup_hw_channel(pf, vsi, ch, seid, vsi_type);
6291         if (ret) {
6292                 dev_err(&pf->pdev->dev, "failed to setup hw_channel\n");
6293                 return false;
6294         }
6295
6296         return ch->initialized ? true : false;
6297 }
6298
6299 /**
6300  * i40e_validate_and_set_switch_mode - sets up switch mode correctly
6301  * @vsi: ptr to VSI which has PF backing
6302  *
6303  * Sets up switch mode correctly if it needs to be changed and perform
6304  * what are allowed modes.
6305  **/
6306 static int i40e_validate_and_set_switch_mode(struct i40e_vsi *vsi)
6307 {
6308         u8 mode;
6309         struct i40e_pf *pf = vsi->back;
6310         struct i40e_hw *hw = &pf->hw;
6311         int ret;
6312
6313         ret = i40e_get_capabilities(pf, i40e_aqc_opc_list_dev_capabilities);
6314         if (ret)
6315                 return -EINVAL;
6316
6317         if (hw->dev_caps.switch_mode) {
6318                 /* if switch mode is set, support mode2 (non-tunneled for
6319                  * cloud filter) for now
6320                  */
6321                 u32 switch_mode = hw->dev_caps.switch_mode &
6322                                   I40E_SWITCH_MODE_MASK;
6323                 if (switch_mode >= I40E_CLOUD_FILTER_MODE1) {
6324                         if (switch_mode == I40E_CLOUD_FILTER_MODE2)
6325                                 return 0;
6326                         dev_err(&pf->pdev->dev,
6327                                 "Invalid switch_mode (%d), only non-tunneled mode for cloud filter is supported\n",
6328                                 hw->dev_caps.switch_mode);
6329                         return -EINVAL;
6330                 }
6331         }
6332
6333         /* Set Bit 7 to be valid */
6334         mode = I40E_AQ_SET_SWITCH_BIT7_VALID;
6335
6336         /* Set L4type for TCP support */
6337         mode |= I40E_AQ_SET_SWITCH_L4_TYPE_TCP;
6338
6339         /* Set cloud filter mode */
6340         mode |= I40E_AQ_SET_SWITCH_MODE_NON_TUNNEL;
6341
6342         /* Prep mode field for set_switch_config */
6343         ret = i40e_aq_set_switch_config(hw, pf->last_sw_conf_flags,
6344                                         pf->last_sw_conf_valid_flags,
6345                                         mode, NULL);
6346         if (ret && hw->aq.asq_last_status != I40E_AQ_RC_ESRCH)
6347                 dev_err(&pf->pdev->dev,
6348                         "couldn't set switch config bits, err %s aq_err %s\n",
6349                         i40e_stat_str(hw, ret),
6350                         i40e_aq_str(hw,
6351                                     hw->aq.asq_last_status));
6352
6353         return ret;
6354 }
6355
6356 /**
6357  * i40e_create_queue_channel - function to create channel
6358  * @vsi: VSI to be configured
6359  * @ch: ptr to channel (it contains channel specific params)
6360  *
6361  * This function creates channel (VSI) using num_queues specified by user,
6362  * reconfigs RSS if needed.
6363  **/
6364 int i40e_create_queue_channel(struct i40e_vsi *vsi,
6365                               struct i40e_channel *ch)
6366 {
6367         struct i40e_pf *pf = vsi->back;
6368         bool reconfig_rss;
6369         int err;
6370
6371         if (!ch)
6372                 return -EINVAL;
6373
6374         if (!ch->num_queue_pairs) {
6375                 dev_err(&pf->pdev->dev, "Invalid num_queues requested: %d\n",
6376                         ch->num_queue_pairs);
6377                 return -EINVAL;
6378         }
6379
6380         /* validate user requested num_queues for channel */
6381         err = i40e_validate_num_queues(pf, ch->num_queue_pairs, vsi,
6382                                        &reconfig_rss);
6383         if (err) {
6384                 dev_info(&pf->pdev->dev, "Failed to validate num_queues (%d)\n",
6385                          ch->num_queue_pairs);
6386                 return -EINVAL;
6387         }
6388
6389         /* By default we are in VEPA mode, if this is the first VF/VMDq
6390          * VSI to be added switch to VEB mode.
6391          */
6392
6393         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
6394                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
6395
6396                 if (vsi->type == I40E_VSI_MAIN) {
6397                         if (pf->flags & I40E_FLAG_TC_MQPRIO)
6398                                 i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
6399                         else
6400                                 i40e_do_reset_safe(pf, I40E_PF_RESET_FLAG);
6401                 }
6402                 /* now onwards for main VSI, number of queues will be value
6403                  * of TC0's queue count
6404                  */
6405         }
6406
6407         /* By this time, vsi->cnt_q_avail shall be set to non-zero and
6408          * it should be more than num_queues
6409          */
6410         if (!vsi->cnt_q_avail || vsi->cnt_q_avail < ch->num_queue_pairs) {
6411                 dev_dbg(&pf->pdev->dev,
6412                         "Error: cnt_q_avail (%u) less than num_queues %d\n",
6413                         vsi->cnt_q_avail, ch->num_queue_pairs);
6414                 return -EINVAL;
6415         }
6416
6417         /* reconfig_rss only if vsi type is MAIN_VSI */
6418         if (reconfig_rss && (vsi->type == I40E_VSI_MAIN)) {
6419                 err = i40e_vsi_reconfig_rss(vsi, ch->num_queue_pairs);
6420                 if (err) {
6421                         dev_info(&pf->pdev->dev,
6422                                  "Error: unable to reconfig rss for num_queues (%u)\n",
6423                                  ch->num_queue_pairs);
6424                         return -EINVAL;
6425                 }
6426         }
6427
6428         if (!i40e_setup_channel(pf, vsi, ch)) {
6429                 dev_info(&pf->pdev->dev, "Failed to setup channel\n");
6430                 return -EINVAL;
6431         }
6432
6433         dev_info(&pf->pdev->dev,
6434                  "Setup channel (id:%u) utilizing num_queues %d\n",
6435                  ch->seid, ch->num_queue_pairs);
6436
6437         /* configure VSI for BW limit */
6438         if (ch->max_tx_rate) {
6439                 u64 credits = ch->max_tx_rate;
6440
6441                 if (i40e_set_bw_limit(vsi, ch->seid, ch->max_tx_rate))
6442                         return -EINVAL;
6443
6444                 do_div(credits, I40E_BW_CREDIT_DIVISOR);
6445                 dev_dbg(&pf->pdev->dev,
6446                         "Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
6447                         ch->max_tx_rate,
6448                         credits,
6449                         ch->seid);
6450         }
6451
6452         /* in case of VF, this will be main SRIOV VSI */
6453         ch->parent_vsi = vsi;
6454
6455         /* and update main_vsi's count for queue_available to use */
6456         vsi->cnt_q_avail -= ch->num_queue_pairs;
6457
6458         return 0;
6459 }
6460
6461 /**
6462  * i40e_configure_queue_channels - Add queue channel for the given TCs
6463  * @vsi: VSI to be configured
6464  *
6465  * Configures queue channel mapping to the given TCs
6466  **/
6467 static int i40e_configure_queue_channels(struct i40e_vsi *vsi)
6468 {
6469         struct i40e_channel *ch;
6470         u64 max_rate = 0;
6471         int ret = 0, i;
6472
6473         /* Create app vsi with the TCs. Main VSI with TC0 is already set up */
6474         vsi->tc_seid_map[0] = vsi->seid;
6475         for (i = 1; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6476                 if (vsi->tc_config.enabled_tc & BIT(i)) {
6477                         ch = kzalloc(sizeof(*ch), GFP_KERNEL);
6478                         if (!ch) {
6479                                 ret = -ENOMEM;
6480                                 goto err_free;
6481                         }
6482
6483                         INIT_LIST_HEAD(&ch->list);
6484                         ch->num_queue_pairs =
6485                                 vsi->tc_config.tc_info[i].qcount;
6486                         ch->base_queue =
6487                                 vsi->tc_config.tc_info[i].qoffset;
6488
6489                         /* Bandwidth limit through tc interface is in bytes/s,
6490                          * change to Mbit/s
6491                          */
6492                         max_rate = vsi->mqprio_qopt.max_rate[i];
6493                         do_div(max_rate, I40E_BW_MBPS_DIVISOR);
6494                         ch->max_tx_rate = max_rate;
6495
6496                         list_add_tail(&ch->list, &vsi->ch_list);
6497
6498                         ret = i40e_create_queue_channel(vsi, ch);
6499                         if (ret) {
6500                                 dev_err(&vsi->back->pdev->dev,
6501                                         "Failed creating queue channel with TC%d: queues %d\n",
6502                                         i, ch->num_queue_pairs);
6503                                 goto err_free;
6504                         }
6505                         vsi->tc_seid_map[i] = ch->seid;
6506                 }
6507         }
6508         return ret;
6509
6510 err_free:
6511         i40e_remove_queue_channels(vsi);
6512         return ret;
6513 }
6514
6515 /**
6516  * i40e_veb_config_tc - Configure TCs for given VEB
6517  * @veb: given VEB
6518  * @enabled_tc: TC bitmap
6519  *
6520  * Configures given TC bitmap for VEB (switching) element
6521  **/
6522 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
6523 {
6524         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
6525         struct i40e_pf *pf = veb->pf;
6526         int ret = 0;
6527         int i;
6528
6529         /* No TCs or already enabled TCs just return */
6530         if (!enabled_tc || veb->enabled_tc == enabled_tc)
6531                 return ret;
6532
6533         bw_data.tc_valid_bits = enabled_tc;
6534         /* bw_data.absolute_credits is not set (relative) */
6535
6536         /* Enable ETS TCs with equal BW Share for now */
6537         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6538                 if (enabled_tc & BIT(i))
6539                         bw_data.tc_bw_share_credits[i] = 1;
6540         }
6541
6542         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
6543                                                    &bw_data, NULL);
6544         if (ret) {
6545                 dev_info(&pf->pdev->dev,
6546                          "VEB bw config failed, err %s aq_err %s\n",
6547                          i40e_stat_str(&pf->hw, ret),
6548                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6549                 goto out;
6550         }
6551
6552         /* Update the BW information */
6553         ret = i40e_veb_get_bw_info(veb);
6554         if (ret) {
6555                 dev_info(&pf->pdev->dev,
6556                          "Failed getting veb bw config, err %s aq_err %s\n",
6557                          i40e_stat_str(&pf->hw, ret),
6558                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6559         }
6560
6561 out:
6562         return ret;
6563 }
6564
6565 #ifdef CONFIG_I40E_DCB
6566 /**
6567  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
6568  * @pf: PF struct
6569  *
6570  * Reconfigure VEB/VSIs on a given PF; it is assumed that
6571  * the caller would've quiesce all the VSIs before calling
6572  * this function
6573  **/
6574 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
6575 {
6576         u8 tc_map = 0;
6577         int ret;
6578         u8 v;
6579
6580         /* Enable the TCs available on PF to all VEBs */
6581         tc_map = i40e_pf_get_tc_map(pf);
6582         for (v = 0; v < I40E_MAX_VEB; v++) {
6583                 if (!pf->veb[v])
6584                         continue;
6585                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
6586                 if (ret) {
6587                         dev_info(&pf->pdev->dev,
6588                                  "Failed configuring TC for VEB seid=%d\n",
6589                                  pf->veb[v]->seid);
6590                         /* Will try to configure as many components */
6591                 }
6592         }
6593
6594         /* Update each VSI */
6595         for (v = 0; v < pf->num_alloc_vsi; v++) {
6596                 if (!pf->vsi[v])
6597                         continue;
6598
6599                 /* - Enable all TCs for the LAN VSI
6600                  * - For all others keep them at TC0 for now
6601                  */
6602                 if (v == pf->lan_vsi)
6603                         tc_map = i40e_pf_get_tc_map(pf);
6604                 else
6605                         tc_map = I40E_DEFAULT_TRAFFIC_CLASS;
6606
6607                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
6608                 if (ret) {
6609                         dev_info(&pf->pdev->dev,
6610                                  "Failed configuring TC for VSI seid=%d\n",
6611                                  pf->vsi[v]->seid);
6612                         /* Will try to configure as many components */
6613                 } else {
6614                         /* Re-configure VSI vectors based on updated TC map */
6615                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
6616                         if (pf->vsi[v]->netdev)
6617                                 i40e_dcbnl_set_all(pf->vsi[v]);
6618                 }
6619         }
6620 }
6621
6622 /**
6623  * i40e_resume_port_tx - Resume port Tx
6624  * @pf: PF struct
6625  *
6626  * Resume a port's Tx and issue a PF reset in case of failure to
6627  * resume.
6628  **/
6629 static int i40e_resume_port_tx(struct i40e_pf *pf)
6630 {
6631         struct i40e_hw *hw = &pf->hw;
6632         int ret;
6633
6634         ret = i40e_aq_resume_port_tx(hw, NULL);
6635         if (ret) {
6636                 dev_info(&pf->pdev->dev,
6637                          "Resume Port Tx failed, err %s aq_err %s\n",
6638                           i40e_stat_str(&pf->hw, ret),
6639                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6640                 /* Schedule PF reset to recover */
6641                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
6642                 i40e_service_event_schedule(pf);
6643         }
6644
6645         return ret;
6646 }
6647
6648 /**
6649  * i40e_init_pf_dcb - Initialize DCB configuration
6650  * @pf: PF being configured
6651  *
6652  * Query the current DCB configuration and cache it
6653  * in the hardware structure
6654  **/
6655 static int i40e_init_pf_dcb(struct i40e_pf *pf)
6656 {
6657         struct i40e_hw *hw = &pf->hw;
6658         int err = 0;
6659
6660         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable
6661          * Also do not enable DCBx if FW LLDP agent is disabled
6662          */
6663         if ((pf->hw_features & I40E_HW_NO_DCB_SUPPORT) ||
6664             (pf->flags & I40E_FLAG_DISABLE_FW_LLDP)) {
6665                 dev_info(&pf->pdev->dev, "DCB is not supported or FW LLDP is disabled\n");
6666                 err = I40E_NOT_SUPPORTED;
6667                 goto out;
6668         }
6669
6670         err = i40e_init_dcb(hw, true);
6671         if (!err) {
6672                 /* Device/Function is not DCBX capable */
6673                 if ((!hw->func_caps.dcb) ||
6674                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
6675                         dev_info(&pf->pdev->dev,
6676                                  "DCBX offload is not supported or is disabled for this PF.\n");
6677                 } else {
6678                         /* When status is not DISABLED then DCBX in FW */
6679                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
6680                                        DCB_CAP_DCBX_VER_IEEE;
6681
6682                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
6683                         /* Enable DCB tagging only when more than one TC
6684                          * or explicitly disable if only one TC
6685                          */
6686                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
6687                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
6688                         else
6689                                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
6690                         dev_dbg(&pf->pdev->dev,
6691                                 "DCBX offload is supported for this PF.\n");
6692                 }
6693         } else if (pf->hw.aq.asq_last_status == I40E_AQ_RC_EPERM) {
6694                 dev_info(&pf->pdev->dev, "FW LLDP disabled for this PF.\n");
6695                 pf->flags |= I40E_FLAG_DISABLE_FW_LLDP;
6696         } else {
6697                 dev_info(&pf->pdev->dev,
6698                          "Query for DCB configuration failed, err %s aq_err %s\n",
6699                          i40e_stat_str(&pf->hw, err),
6700                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6701         }
6702
6703 out:
6704         return err;
6705 }
6706 #endif /* CONFIG_I40E_DCB */
6707
6708 /**
6709  * i40e_print_link_message - print link up or down
6710  * @vsi: the VSI for which link needs a message
6711  * @isup: true of link is up, false otherwise
6712  */
6713 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
6714 {
6715         enum i40e_aq_link_speed new_speed;
6716         struct i40e_pf *pf = vsi->back;
6717         char *speed = "Unknown";
6718         char *fc = "Unknown";
6719         char *fec = "";
6720         char *req_fec = "";
6721         char *an = "";
6722
6723         if (isup)
6724                 new_speed = pf->hw.phy.link_info.link_speed;
6725         else
6726                 new_speed = I40E_LINK_SPEED_UNKNOWN;
6727
6728         if ((vsi->current_isup == isup) && (vsi->current_speed == new_speed))
6729                 return;
6730         vsi->current_isup = isup;
6731         vsi->current_speed = new_speed;
6732         if (!isup) {
6733                 netdev_info(vsi->netdev, "NIC Link is Down\n");
6734                 return;
6735         }
6736
6737         /* Warn user if link speed on NPAR enabled partition is not at
6738          * least 10GB
6739          */
6740         if (pf->hw.func_caps.npar_enable &&
6741             (pf->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
6742              pf->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
6743                 netdev_warn(vsi->netdev,
6744                             "The partition detected link speed that is less than 10Gbps\n");
6745
6746         switch (pf->hw.phy.link_info.link_speed) {
6747         case I40E_LINK_SPEED_40GB:
6748                 speed = "40 G";
6749                 break;
6750         case I40E_LINK_SPEED_20GB:
6751                 speed = "20 G";
6752                 break;
6753         case I40E_LINK_SPEED_25GB:
6754                 speed = "25 G";
6755                 break;
6756         case I40E_LINK_SPEED_10GB:
6757                 speed = "10 G";
6758                 break;
6759         case I40E_LINK_SPEED_5GB:
6760                 speed = "5 G";
6761                 break;
6762         case I40E_LINK_SPEED_2_5GB:
6763                 speed = "2.5 G";
6764                 break;
6765         case I40E_LINK_SPEED_1GB:
6766                 speed = "1000 M";
6767                 break;
6768         case I40E_LINK_SPEED_100MB:
6769                 speed = "100 M";
6770                 break;
6771         default:
6772                 break;
6773         }
6774
6775         switch (pf->hw.fc.current_mode) {
6776         case I40E_FC_FULL:
6777                 fc = "RX/TX";
6778                 break;
6779         case I40E_FC_TX_PAUSE:
6780                 fc = "TX";
6781                 break;
6782         case I40E_FC_RX_PAUSE:
6783                 fc = "RX";
6784                 break;
6785         default:
6786                 fc = "None";
6787                 break;
6788         }
6789
6790         if (pf->hw.phy.link_info.link_speed == I40E_LINK_SPEED_25GB) {
6791                 req_fec = "None";
6792                 fec = "None";
6793                 an = "False";
6794
6795                 if (pf->hw.phy.link_info.an_info & I40E_AQ_AN_COMPLETED)
6796                         an = "True";
6797
6798                 if (pf->hw.phy.link_info.fec_info &
6799                     I40E_AQ_CONFIG_FEC_KR_ENA)
6800                         fec = "CL74 FC-FEC/BASE-R";
6801                 else if (pf->hw.phy.link_info.fec_info &
6802                          I40E_AQ_CONFIG_FEC_RS_ENA)
6803                         fec = "CL108 RS-FEC";
6804
6805                 /* 'CL108 RS-FEC' should be displayed when RS is requested, or
6806                  * both RS and FC are requested
6807                  */
6808                 if (vsi->back->hw.phy.link_info.req_fec_info &
6809                     (I40E_AQ_REQUEST_FEC_KR | I40E_AQ_REQUEST_FEC_RS)) {
6810                         if (vsi->back->hw.phy.link_info.req_fec_info &
6811                             I40E_AQ_REQUEST_FEC_RS)
6812                                 req_fec = "CL108 RS-FEC";
6813                         else
6814                                 req_fec = "CL74 FC-FEC/BASE-R";
6815                 }
6816                 netdev_info(vsi->netdev,
6817                             "NIC Link is Up, %sbps Full Duplex, Requested FEC: %s, Negotiated FEC: %s, Autoneg: %s, Flow Control: %s\n",
6818                             speed, req_fec, fec, an, fc);
6819         } else if (pf->hw.device_id == I40E_DEV_ID_KX_X722) {
6820                 req_fec = "None";
6821                 fec = "None";
6822                 an = "False";
6823
6824                 if (pf->hw.phy.link_info.an_info & I40E_AQ_AN_COMPLETED)
6825                         an = "True";
6826
6827                 if (pf->hw.phy.link_info.fec_info &
6828                     I40E_AQ_CONFIG_FEC_KR_ENA)
6829                         fec = "CL74 FC-FEC/BASE-R";
6830
6831                 if (pf->hw.phy.link_info.req_fec_info &
6832                     I40E_AQ_REQUEST_FEC_KR)
6833                         req_fec = "CL74 FC-FEC/BASE-R";
6834
6835                 netdev_info(vsi->netdev,
6836                             "NIC Link is Up, %sbps Full Duplex, Requested FEC: %s, Negotiated FEC: %s, Autoneg: %s, Flow Control: %s\n",
6837                             speed, req_fec, fec, an, fc);
6838         } else {
6839                 netdev_info(vsi->netdev,
6840                             "NIC Link is Up, %sbps Full Duplex, Flow Control: %s\n",
6841                             speed, fc);
6842         }
6843
6844 }
6845
6846 /**
6847  * i40e_up_complete - Finish the last steps of bringing up a connection
6848  * @vsi: the VSI being configured
6849  **/
6850 static int i40e_up_complete(struct i40e_vsi *vsi)
6851 {
6852         struct i40e_pf *pf = vsi->back;
6853         int err;
6854
6855         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6856                 i40e_vsi_configure_msix(vsi);
6857         else
6858                 i40e_configure_msi_and_legacy(vsi);
6859
6860         /* start rings */
6861         err = i40e_vsi_start_rings(vsi);
6862         if (err)
6863                 return err;
6864
6865         clear_bit(__I40E_VSI_DOWN, vsi->state);
6866         i40e_napi_enable_all(vsi);
6867         i40e_vsi_enable_irq(vsi);
6868
6869         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
6870             (vsi->netdev)) {
6871                 i40e_print_link_message(vsi, true);
6872                 netif_tx_start_all_queues(vsi->netdev);
6873                 netif_carrier_on(vsi->netdev);
6874         }
6875
6876         /* replay FDIR SB filters */
6877         if (vsi->type == I40E_VSI_FDIR) {
6878                 /* reset fd counters */
6879                 pf->fd_add_err = 0;
6880                 pf->fd_atr_cnt = 0;
6881                 i40e_fdir_filter_restore(vsi);
6882         }
6883
6884         /* On the next run of the service_task, notify any clients of the new
6885          * opened netdev
6886          */
6887         set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
6888         i40e_service_event_schedule(pf);
6889
6890         return 0;
6891 }
6892
6893 /**
6894  * i40e_vsi_reinit_locked - Reset the VSI
6895  * @vsi: the VSI being configured
6896  *
6897  * Rebuild the ring structs after some configuration
6898  * has changed, e.g. MTU size.
6899  **/
6900 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
6901 {
6902         struct i40e_pf *pf = vsi->back;
6903
6904         while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state))
6905                 usleep_range(1000, 2000);
6906         i40e_down(vsi);
6907
6908         i40e_up(vsi);
6909         clear_bit(__I40E_CONFIG_BUSY, pf->state);
6910 }
6911
6912 /**
6913  * i40e_force_link_state - Force the link status
6914  * @pf: board private structure
6915  * @is_up: whether the link state should be forced up or down
6916  **/
6917 static i40e_status i40e_force_link_state(struct i40e_pf *pf, bool is_up)
6918 {
6919         struct i40e_aq_get_phy_abilities_resp abilities;
6920         struct i40e_aq_set_phy_config config = {0};
6921         bool non_zero_phy_type = is_up;
6922         struct i40e_hw *hw = &pf->hw;
6923         i40e_status err;
6924         u64 mask;
6925         u8 speed;
6926
6927         /* Card might've been put in an unstable state by other drivers
6928          * and applications, which causes incorrect speed values being
6929          * set on startup. In order to clear speed registers, we call
6930          * get_phy_capabilities twice, once to get initial state of
6931          * available speeds, and once to get current PHY config.
6932          */
6933         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities,
6934                                            NULL);
6935         if (err) {
6936                 dev_err(&pf->pdev->dev,
6937                         "failed to get phy cap., ret =  %s last_status =  %s\n",
6938                         i40e_stat_str(hw, err),
6939                         i40e_aq_str(hw, hw->aq.asq_last_status));
6940                 return err;
6941         }
6942         speed = abilities.link_speed;
6943
6944         /* Get the current phy config */
6945         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
6946                                            NULL);
6947         if (err) {
6948                 dev_err(&pf->pdev->dev,
6949                         "failed to get phy cap., ret =  %s last_status =  %s\n",
6950                         i40e_stat_str(hw, err),
6951                         i40e_aq_str(hw, hw->aq.asq_last_status));
6952                 return err;
6953         }
6954
6955         /* If link needs to go up, but was not forced to go down,
6956          * and its speed values are OK, no need for a flap
6957          * if non_zero_phy_type was set, still need to force up
6958          */
6959         if (pf->flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED)
6960                 non_zero_phy_type = true;
6961         else if (is_up && abilities.phy_type != 0 && abilities.link_speed != 0)
6962                 return I40E_SUCCESS;
6963
6964         /* To force link we need to set bits for all supported PHY types,
6965          * but there are now more than 32, so we need to split the bitmap
6966          * across two fields.
6967          */
6968         mask = I40E_PHY_TYPES_BITMASK;
6969         config.phy_type =
6970                 non_zero_phy_type ? cpu_to_le32((u32)(mask & 0xffffffff)) : 0;
6971         config.phy_type_ext =
6972                 non_zero_phy_type ? (u8)((mask >> 32) & 0xff) : 0;
6973         /* Copy the old settings, except of phy_type */
6974         config.abilities = abilities.abilities;
6975         if (pf->flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED) {
6976                 if (is_up)
6977                         config.abilities |= I40E_AQ_PHY_ENABLE_LINK;
6978                 else
6979                         config.abilities &= ~(I40E_AQ_PHY_ENABLE_LINK);
6980         }
6981         if (abilities.link_speed != 0)
6982                 config.link_speed = abilities.link_speed;
6983         else
6984                 config.link_speed = speed;
6985         config.eee_capability = abilities.eee_capability;
6986         config.eeer = abilities.eeer_val;
6987         config.low_power_ctrl = abilities.d3_lpan;
6988         config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
6989                             I40E_AQ_PHY_FEC_CONFIG_MASK;
6990         err = i40e_aq_set_phy_config(hw, &config, NULL);
6991
6992         if (err) {
6993                 dev_err(&pf->pdev->dev,
6994                         "set phy config ret =  %s last_status =  %s\n",
6995                         i40e_stat_str(&pf->hw, err),
6996                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6997                 return err;
6998         }
6999
7000         /* Update the link info */
7001         err = i40e_update_link_info(hw);
7002         if (err) {
7003                 /* Wait a little bit (on 40G cards it sometimes takes a really
7004                  * long time for link to come back from the atomic reset)
7005                  * and try once more
7006                  */
7007                 msleep(1000);
7008                 i40e_update_link_info(hw);
7009         }
7010
7011         i40e_aq_set_link_restart_an(hw, is_up, NULL);
7012
7013         return I40E_SUCCESS;
7014 }
7015
7016 /**
7017  * i40e_up - Bring the connection back up after being down
7018  * @vsi: the VSI being configured
7019  **/
7020 int i40e_up(struct i40e_vsi *vsi)
7021 {
7022         int err;
7023
7024         if (vsi->type == I40E_VSI_MAIN &&
7025             (vsi->back->flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED ||
7026              vsi->back->flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED))
7027                 i40e_force_link_state(vsi->back, true);
7028
7029         err = i40e_vsi_configure(vsi);
7030         if (!err)
7031                 err = i40e_up_complete(vsi);
7032
7033         return err;
7034 }
7035
7036 /**
7037  * i40e_down - Shutdown the connection processing
7038  * @vsi: the VSI being stopped
7039  **/
7040 void i40e_down(struct i40e_vsi *vsi)
7041 {
7042         int i;
7043
7044         /* It is assumed that the caller of this function
7045          * sets the vsi->state __I40E_VSI_DOWN bit.
7046          */
7047         if (vsi->netdev) {
7048                 netif_carrier_off(vsi->netdev);
7049                 netif_tx_disable(vsi->netdev);
7050         }
7051         i40e_vsi_disable_irq(vsi);
7052         i40e_vsi_stop_rings(vsi);
7053         if (vsi->type == I40E_VSI_MAIN &&
7054            (vsi->back->flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED ||
7055             vsi->back->flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED))
7056                 i40e_force_link_state(vsi->back, false);
7057         i40e_napi_disable_all(vsi);
7058
7059         for (i = 0; i < vsi->num_queue_pairs; i++) {
7060                 i40e_clean_tx_ring(vsi->tx_rings[i]);
7061                 if (i40e_enabled_xdp_vsi(vsi)) {
7062                         /* Make sure that in-progress ndo_xdp_xmit and
7063                          * ndo_xsk_wakeup calls are completed.
7064                          */
7065                         synchronize_rcu();
7066                         i40e_clean_tx_ring(vsi->xdp_rings[i]);
7067                 }
7068                 i40e_clean_rx_ring(vsi->rx_rings[i]);
7069         }
7070
7071 }
7072
7073 /**
7074  * i40e_validate_mqprio_qopt- validate queue mapping info
7075  * @vsi: the VSI being configured
7076  * @mqprio_qopt: queue parametrs
7077  **/
7078 static int i40e_validate_mqprio_qopt(struct i40e_vsi *vsi,
7079                                      struct tc_mqprio_qopt_offload *mqprio_qopt)
7080 {
7081         u64 sum_max_rate = 0;
7082         u64 max_rate = 0;
7083         int i;
7084
7085         if (mqprio_qopt->qopt.offset[0] != 0 ||
7086             mqprio_qopt->qopt.num_tc < 1 ||
7087             mqprio_qopt->qopt.num_tc > I40E_MAX_TRAFFIC_CLASS)
7088                 return -EINVAL;
7089         for (i = 0; ; i++) {
7090                 if (!mqprio_qopt->qopt.count[i])
7091                         return -EINVAL;
7092                 if (mqprio_qopt->min_rate[i]) {
7093                         dev_err(&vsi->back->pdev->dev,
7094                                 "Invalid min tx rate (greater than 0) specified\n");
7095                         return -EINVAL;
7096                 }
7097                 max_rate = mqprio_qopt->max_rate[i];
7098                 do_div(max_rate, I40E_BW_MBPS_DIVISOR);
7099                 sum_max_rate += max_rate;
7100
7101                 if (i >= mqprio_qopt->qopt.num_tc - 1)
7102                         break;
7103                 if (mqprio_qopt->qopt.offset[i + 1] !=
7104                     (mqprio_qopt->qopt.offset[i] + mqprio_qopt->qopt.count[i]))
7105                         return -EINVAL;
7106         }
7107         if (vsi->num_queue_pairs <
7108             (mqprio_qopt->qopt.offset[i] + mqprio_qopt->qopt.count[i])) {
7109                 dev_err(&vsi->back->pdev->dev,
7110                         "Failed to create traffic channel, insufficient number of queues.\n");
7111                 return -EINVAL;
7112         }
7113         if (sum_max_rate > i40e_get_link_speed(vsi)) {
7114                 dev_err(&vsi->back->pdev->dev,
7115                         "Invalid max tx rate specified\n");
7116                 return -EINVAL;
7117         }
7118         return 0;
7119 }
7120
7121 /**
7122  * i40e_vsi_set_default_tc_config - set default values for tc configuration
7123  * @vsi: the VSI being configured
7124  **/
7125 static void i40e_vsi_set_default_tc_config(struct i40e_vsi *vsi)
7126 {
7127         u16 qcount;
7128         int i;
7129
7130         /* Only TC0 is enabled */
7131         vsi->tc_config.numtc = 1;
7132         vsi->tc_config.enabled_tc = 1;
7133         qcount = min_t(int, vsi->alloc_queue_pairs,
7134                        i40e_pf_get_max_q_per_tc(vsi->back));
7135         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
7136                 /* For the TC that is not enabled set the offset to to default
7137                  * queue and allocate one queue for the given TC.
7138                  */
7139                 vsi->tc_config.tc_info[i].qoffset = 0;
7140                 if (i == 0)
7141                         vsi->tc_config.tc_info[i].qcount = qcount;
7142                 else
7143                         vsi->tc_config.tc_info[i].qcount = 1;
7144                 vsi->tc_config.tc_info[i].netdev_tc = 0;
7145         }
7146 }
7147
7148 /**
7149  * i40e_del_macvlan_filter
7150  * @hw: pointer to the HW structure
7151  * @seid: seid of the channel VSI
7152  * @macaddr: the mac address to apply as a filter
7153  * @aq_err: store the admin Q error
7154  *
7155  * This function deletes a mac filter on the channel VSI which serves as the
7156  * macvlan. Returns 0 on success.
7157  **/
7158 static i40e_status i40e_del_macvlan_filter(struct i40e_hw *hw, u16 seid,
7159                                            const u8 *macaddr, int *aq_err)
7160 {
7161         struct i40e_aqc_remove_macvlan_element_data element;
7162         i40e_status status;
7163
7164         memset(&element, 0, sizeof(element));
7165         ether_addr_copy(element.mac_addr, macaddr);
7166         element.vlan_tag = 0;
7167         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
7168         status = i40e_aq_remove_macvlan(hw, seid, &element, 1, NULL);
7169         *aq_err = hw->aq.asq_last_status;
7170
7171         return status;
7172 }
7173
7174 /**
7175  * i40e_add_macvlan_filter
7176  * @hw: pointer to the HW structure
7177  * @seid: seid of the channel VSI
7178  * @macaddr: the mac address to apply as a filter
7179  * @aq_err: store the admin Q error
7180  *
7181  * This function adds a mac filter on the channel VSI which serves as the
7182  * macvlan. Returns 0 on success.
7183  **/
7184 static i40e_status i40e_add_macvlan_filter(struct i40e_hw *hw, u16 seid,
7185                                            const u8 *macaddr, int *aq_err)
7186 {
7187         struct i40e_aqc_add_macvlan_element_data element;
7188         i40e_status status;
7189         u16 cmd_flags = 0;
7190
7191         ether_addr_copy(element.mac_addr, macaddr);
7192         element.vlan_tag = 0;
7193         element.queue_number = 0;
7194         element.match_method = I40E_AQC_MM_ERR_NO_RES;
7195         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
7196         element.flags = cpu_to_le16(cmd_flags);
7197         status = i40e_aq_add_macvlan(hw, seid, &element, 1, NULL);
7198         *aq_err = hw->aq.asq_last_status;
7199
7200         return status;
7201 }
7202
7203 /**
7204  * i40e_reset_ch_rings - Reset the queue contexts in a channel
7205  * @vsi: the VSI we want to access
7206  * @ch: the channel we want to access
7207  */
7208 static void i40e_reset_ch_rings(struct i40e_vsi *vsi, struct i40e_channel *ch)
7209 {
7210         struct i40e_ring *tx_ring, *rx_ring;
7211         u16 pf_q;
7212         int i;
7213
7214         for (i = 0; i < ch->num_queue_pairs; i++) {
7215                 pf_q = ch->base_queue + i;
7216                 tx_ring = vsi->tx_rings[pf_q];
7217                 tx_ring->ch = NULL;
7218                 rx_ring = vsi->rx_rings[pf_q];
7219                 rx_ring->ch = NULL;
7220         }
7221 }
7222
7223 /**
7224  * i40e_free_macvlan_channels
7225  * @vsi: the VSI we want to access
7226  *
7227  * This function frees the Qs of the channel VSI from
7228  * the stack and also deletes the channel VSIs which
7229  * serve as macvlans.
7230  */
7231 static void i40e_free_macvlan_channels(struct i40e_vsi *vsi)
7232 {
7233         struct i40e_channel *ch, *ch_tmp;
7234         int ret;
7235
7236         if (list_empty(&vsi->macvlan_list))
7237                 return;
7238
7239         list_for_each_entry_safe(ch, ch_tmp, &vsi->macvlan_list, list) {
7240                 struct i40e_vsi *parent_vsi;
7241
7242                 if (i40e_is_channel_macvlan(ch)) {
7243                         i40e_reset_ch_rings(vsi, ch);
7244                         clear_bit(ch->fwd->bit_no, vsi->fwd_bitmask);
7245                         netdev_unbind_sb_channel(vsi->netdev, ch->fwd->netdev);
7246                         netdev_set_sb_channel(ch->fwd->netdev, 0);
7247                         kfree(ch->fwd);
7248                         ch->fwd = NULL;
7249                 }
7250
7251                 list_del(&ch->list);
7252                 parent_vsi = ch->parent_vsi;
7253                 if (!parent_vsi || !ch->initialized) {
7254                         kfree(ch);
7255                         continue;
7256                 }
7257
7258                 /* remove the VSI */
7259                 ret = i40e_aq_delete_element(&vsi->back->hw, ch->seid,
7260                                              NULL);
7261                 if (ret)
7262                         dev_err(&vsi->back->pdev->dev,
7263                                 "unable to remove channel (%d) for parent VSI(%d)\n",
7264                                 ch->seid, parent_vsi->seid);
7265                 kfree(ch);
7266         }
7267         vsi->macvlan_cnt = 0;
7268 }
7269
7270 /**
7271  * i40e_fwd_ring_up - bring the macvlan device up
7272  * @vsi: the VSI we want to access
7273  * @vdev: macvlan netdevice
7274  * @fwd: the private fwd structure
7275  */
7276 static int i40e_fwd_ring_up(struct i40e_vsi *vsi, struct net_device *vdev,
7277                             struct i40e_fwd_adapter *fwd)
7278 {
7279         struct i40e_channel *ch = NULL, *ch_tmp, *iter;
7280         int ret = 0, num_tc = 1,  i, aq_err;
7281         struct i40e_pf *pf = vsi->back;
7282         struct i40e_hw *hw = &pf->hw;
7283
7284         /* Go through the list and find an available channel */
7285         list_for_each_entry_safe(iter, ch_tmp, &vsi->macvlan_list, list) {
7286                 if (!i40e_is_channel_macvlan(iter)) {
7287                         iter->fwd = fwd;
7288                         /* record configuration for macvlan interface in vdev */
7289                         for (i = 0; i < num_tc; i++)
7290                                 netdev_bind_sb_channel_queue(vsi->netdev, vdev,
7291                                                              i,
7292                                                              iter->num_queue_pairs,
7293                                                              iter->base_queue);
7294                         for (i = 0; i < iter->num_queue_pairs; i++) {
7295                                 struct i40e_ring *tx_ring, *rx_ring;
7296                                 u16 pf_q;
7297
7298                                 pf_q = iter->base_queue + i;
7299
7300                                 /* Get to TX ring ptr */
7301                                 tx_ring = vsi->tx_rings[pf_q];
7302                                 tx_ring->ch = iter;
7303
7304                                 /* Get the RX ring ptr */
7305                                 rx_ring = vsi->rx_rings[pf_q];
7306                                 rx_ring->ch = iter;
7307                         }
7308                         ch = iter;
7309                         break;
7310                 }
7311         }
7312
7313         if (!ch)
7314                 return -EINVAL;
7315
7316         /* Guarantee all rings are updated before we update the
7317          * MAC address filter.
7318          */
7319         wmb();
7320
7321         /* Add a mac filter */
7322         ret = i40e_add_macvlan_filter(hw, ch->seid, vdev->dev_addr, &aq_err);
7323         if (ret) {
7324                 /* if we cannot add the MAC rule then disable the offload */
7325                 macvlan_release_l2fw_offload(vdev);
7326                 for (i = 0; i < ch->num_queue_pairs; i++) {
7327                         struct i40e_ring *rx_ring;
7328                         u16 pf_q;
7329
7330                         pf_q = ch->base_queue + i;
7331                         rx_ring = vsi->rx_rings[pf_q];
7332                         rx_ring->netdev = NULL;
7333                 }
7334                 dev_info(&pf->pdev->dev,
7335                          "Error adding mac filter on macvlan err %s, aq_err %s\n",
7336                           i40e_stat_str(hw, ret),
7337                           i40e_aq_str(hw, aq_err));
7338                 netdev_err(vdev, "L2fwd offload disabled to L2 filter error\n");
7339         }
7340
7341         return ret;
7342 }
7343
7344 /**
7345  * i40e_setup_macvlans - create the channels which will be macvlans
7346  * @vsi: the VSI we want to access
7347  * @macvlan_cnt: no. of macvlans to be setup
7348  * @qcnt: no. of Qs per macvlan
7349  * @vdev: macvlan netdevice
7350  */
7351 static int i40e_setup_macvlans(struct i40e_vsi *vsi, u16 macvlan_cnt, u16 qcnt,
7352                                struct net_device *vdev)
7353 {
7354         struct i40e_pf *pf = vsi->back;
7355         struct i40e_hw *hw = &pf->hw;
7356         struct i40e_vsi_context ctxt;
7357         u16 sections, qmap, num_qps;
7358         struct i40e_channel *ch;
7359         int i, pow, ret = 0;
7360         u8 offset = 0;
7361
7362         if (vsi->type != I40E_VSI_MAIN || !macvlan_cnt)
7363                 return -EINVAL;
7364
7365         num_qps = vsi->num_queue_pairs - (macvlan_cnt * qcnt);
7366
7367         /* find the next higher power-of-2 of num queue pairs */
7368         pow = fls(roundup_pow_of_two(num_qps) - 1);
7369
7370         qmap = (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
7371                 (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
7372
7373         /* Setup context bits for the main VSI */
7374         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
7375         sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
7376         memset(&ctxt, 0, sizeof(ctxt));
7377         ctxt.seid = vsi->seid;
7378         ctxt.pf_num = vsi->back->hw.pf_id;
7379         ctxt.vf_num = 0;
7380         ctxt.uplink_seid = vsi->uplink_seid;
7381         ctxt.info = vsi->info;
7382         ctxt.info.tc_mapping[0] = cpu_to_le16(qmap);
7383         ctxt.info.mapping_flags |= cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
7384         ctxt.info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
7385         ctxt.info.valid_sections |= cpu_to_le16(sections);
7386
7387         /* Reconfigure RSS for main VSI with new max queue count */
7388         vsi->rss_size = max_t(u16, num_qps, qcnt);
7389         ret = i40e_vsi_config_rss(vsi);
7390         if (ret) {
7391                 dev_info(&pf->pdev->dev,
7392                          "Failed to reconfig RSS for num_queues (%u)\n",
7393                          vsi->rss_size);
7394                 return ret;
7395         }
7396         vsi->reconfig_rss = true;
7397         dev_dbg(&vsi->back->pdev->dev,
7398                 "Reconfigured RSS with num_queues (%u)\n", vsi->rss_size);
7399         vsi->next_base_queue = num_qps;
7400         vsi->cnt_q_avail = vsi->num_queue_pairs - num_qps;
7401
7402         /* Update the VSI after updating the VSI queue-mapping
7403          * information
7404          */
7405         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
7406         if (ret) {
7407                 dev_info(&pf->pdev->dev,
7408                          "Update vsi tc config failed, err %s aq_err %s\n",
7409                          i40e_stat_str(hw, ret),
7410                          i40e_aq_str(hw, hw->aq.asq_last_status));
7411                 return ret;
7412         }
7413         /* update the local VSI info with updated queue map */
7414         i40e_vsi_update_queue_map(vsi, &ctxt);
7415         vsi->info.valid_sections = 0;
7416
7417         /* Create channels for macvlans */
7418         INIT_LIST_HEAD(&vsi->macvlan_list);
7419         for (i = 0; i < macvlan_cnt; i++) {
7420                 ch = kzalloc(sizeof(*ch), GFP_KERNEL);
7421                 if (!ch) {
7422                         ret = -ENOMEM;
7423                         goto err_free;
7424                 }
7425                 INIT_LIST_HEAD(&ch->list);
7426                 ch->num_queue_pairs = qcnt;
7427                 if (!i40e_setup_channel(pf, vsi, ch)) {
7428                         ret = -EINVAL;
7429                         kfree(ch);
7430                         goto err_free;
7431                 }
7432                 ch->parent_vsi = vsi;
7433                 vsi->cnt_q_avail -= ch->num_queue_pairs;
7434                 vsi->macvlan_cnt++;
7435                 list_add_tail(&ch->list, &vsi->macvlan_list);
7436         }
7437
7438         return ret;
7439
7440 err_free:
7441         dev_info(&pf->pdev->dev, "Failed to setup macvlans\n");
7442         i40e_free_macvlan_channels(vsi);
7443
7444         return ret;
7445 }
7446
7447 /**
7448  * i40e_fwd_add - configure macvlans
7449  * @netdev: net device to configure
7450  * @vdev: macvlan netdevice
7451  **/
7452 static void *i40e_fwd_add(struct net_device *netdev, struct net_device *vdev)
7453 {
7454         struct i40e_netdev_priv *np = netdev_priv(netdev);
7455         u16 q_per_macvlan = 0, macvlan_cnt = 0, vectors;
7456         struct i40e_vsi *vsi = np->vsi;
7457         struct i40e_pf *pf = vsi->back;
7458         struct i40e_fwd_adapter *fwd;
7459         int avail_macvlan, ret;
7460
7461         if ((pf->flags & I40E_FLAG_DCB_ENABLED)) {
7462                 netdev_info(netdev, "Macvlans are not supported when DCB is enabled\n");
7463                 return ERR_PTR(-EINVAL);
7464         }
7465         if ((pf->flags & I40E_FLAG_TC_MQPRIO)) {
7466                 netdev_info(netdev, "Macvlans are not supported when HW TC offload is on\n");
7467                 return ERR_PTR(-EINVAL);
7468         }
7469         if (pf->num_lan_msix < I40E_MIN_MACVLAN_VECTORS) {
7470                 netdev_info(netdev, "Not enough vectors available to support macvlans\n");
7471                 return ERR_PTR(-EINVAL);
7472         }
7473
7474         /* The macvlan device has to be a single Q device so that the
7475          * tc_to_txq field can be reused to pick the tx queue.
7476          */
7477         if (netif_is_multiqueue(vdev))
7478                 return ERR_PTR(-ERANGE);
7479
7480         if (!vsi->macvlan_cnt) {
7481                 /* reserve bit 0 for the pf device */
7482                 set_bit(0, vsi->fwd_bitmask);
7483
7484                 /* Try to reserve as many queues as possible for macvlans. First
7485                  * reserve 3/4th of max vectors, then half, then quarter and
7486                  * calculate Qs per macvlan as you go
7487                  */
7488                 vectors = pf->num_lan_msix;
7489                 if (vectors <= I40E_MAX_MACVLANS && vectors > 64) {
7490                         /* allocate 4 Qs per macvlan and 32 Qs to the PF*/
7491                         q_per_macvlan = 4;
7492                         macvlan_cnt = (vectors - 32) / 4;
7493                 } else if (vectors <= 64 && vectors > 32) {
7494                         /* allocate 2 Qs per macvlan and 16 Qs to the PF*/
7495                         q_per_macvlan = 2;
7496                         macvlan_cnt = (vectors - 16) / 2;
7497                 } else if (vectors <= 32 && vectors > 16) {
7498                         /* allocate 1 Q per macvlan and 16 Qs to the PF*/
7499                         q_per_macvlan = 1;
7500                         macvlan_cnt = vectors - 16;
7501                 } else if (vectors <= 16 && vectors > 8) {
7502                         /* allocate 1 Q per macvlan and 8 Qs to the PF */
7503                         q_per_macvlan = 1;
7504                         macvlan_cnt = vectors - 8;
7505                 } else {
7506                         /* allocate 1 Q per macvlan and 1 Q to the PF */
7507                         q_per_macvlan = 1;
7508                         macvlan_cnt = vectors - 1;
7509                 }
7510
7511                 if (macvlan_cnt == 0)
7512                         return ERR_PTR(-EBUSY);
7513
7514                 /* Quiesce VSI queues */
7515                 i40e_quiesce_vsi(vsi);
7516
7517                 /* sets up the macvlans but does not "enable" them */
7518                 ret = i40e_setup_macvlans(vsi, macvlan_cnt, q_per_macvlan,
7519                                           vdev);
7520                 if (ret)
7521                         return ERR_PTR(ret);
7522
7523                 /* Unquiesce VSI */
7524                 i40e_unquiesce_vsi(vsi);
7525         }
7526         avail_macvlan = find_first_zero_bit(vsi->fwd_bitmask,
7527                                             vsi->macvlan_cnt);
7528         if (avail_macvlan >= I40E_MAX_MACVLANS)
7529                 return ERR_PTR(-EBUSY);
7530
7531         /* create the fwd struct */
7532         fwd = kzalloc(sizeof(*fwd), GFP_KERNEL);
7533         if (!fwd)
7534                 return ERR_PTR(-ENOMEM);
7535
7536         set_bit(avail_macvlan, vsi->fwd_bitmask);
7537         fwd->bit_no = avail_macvlan;
7538         netdev_set_sb_channel(vdev, avail_macvlan);
7539         fwd->netdev = vdev;
7540
7541         if (!netif_running(netdev))
7542                 return fwd;
7543
7544         /* Set fwd ring up */
7545         ret = i40e_fwd_ring_up(vsi, vdev, fwd);
7546         if (ret) {
7547                 /* unbind the queues and drop the subordinate channel config */
7548                 netdev_unbind_sb_channel(netdev, vdev);
7549                 netdev_set_sb_channel(vdev, 0);
7550
7551                 kfree(fwd);
7552                 return ERR_PTR(-EINVAL);
7553         }
7554
7555         return fwd;
7556 }
7557
7558 /**
7559  * i40e_del_all_macvlans - Delete all the mac filters on the channels
7560  * @vsi: the VSI we want to access
7561  */
7562 static void i40e_del_all_macvlans(struct i40e_vsi *vsi)
7563 {
7564         struct i40e_channel *ch, *ch_tmp;
7565         struct i40e_pf *pf = vsi->back;
7566         struct i40e_hw *hw = &pf->hw;
7567         int aq_err, ret = 0;
7568
7569         if (list_empty(&vsi->macvlan_list))
7570                 return;
7571
7572         list_for_each_entry_safe(ch, ch_tmp, &vsi->macvlan_list, list) {
7573                 if (i40e_is_channel_macvlan(ch)) {
7574                         ret = i40e_del_macvlan_filter(hw, ch->seid,
7575                                                       i40e_channel_mac(ch),
7576                                                       &aq_err);
7577                         if (!ret) {
7578                                 /* Reset queue contexts */
7579                                 i40e_reset_ch_rings(vsi, ch);
7580                                 clear_bit(ch->fwd->bit_no, vsi->fwd_bitmask);
7581                                 netdev_unbind_sb_channel(vsi->netdev,
7582                                                          ch->fwd->netdev);
7583                                 netdev_set_sb_channel(ch->fwd->netdev, 0);
7584                                 kfree(ch->fwd);
7585                                 ch->fwd = NULL;
7586                         }
7587                 }
7588         }
7589 }
7590
7591 /**
7592  * i40e_fwd_del - delete macvlan interfaces
7593  * @netdev: net device to configure
7594  * @vdev: macvlan netdevice
7595  */
7596 static void i40e_fwd_del(struct net_device *netdev, void *vdev)
7597 {
7598         struct i40e_netdev_priv *np = netdev_priv(netdev);
7599         struct i40e_fwd_adapter *fwd = vdev;
7600         struct i40e_channel *ch, *ch_tmp;
7601         struct i40e_vsi *vsi = np->vsi;
7602         struct i40e_pf *pf = vsi->back;
7603         struct i40e_hw *hw = &pf->hw;
7604         int aq_err, ret = 0;
7605
7606         /* Find the channel associated with the macvlan and del mac filter */
7607         list_for_each_entry_safe(ch, ch_tmp, &vsi->macvlan_list, list) {
7608                 if (i40e_is_channel_macvlan(ch) &&
7609                     ether_addr_equal(i40e_channel_mac(ch),
7610                                      fwd->netdev->dev_addr)) {
7611                         ret = i40e_del_macvlan_filter(hw, ch->seid,
7612                                                       i40e_channel_mac(ch),
7613                                                       &aq_err);
7614                         if (!ret) {
7615                                 /* Reset queue contexts */
7616                                 i40e_reset_ch_rings(vsi, ch);
7617                                 clear_bit(ch->fwd->bit_no, vsi->fwd_bitmask);
7618                                 netdev_unbind_sb_channel(netdev, fwd->netdev);
7619                                 netdev_set_sb_channel(fwd->netdev, 0);
7620                                 kfree(ch->fwd);
7621                                 ch->fwd = NULL;
7622                         } else {
7623                                 dev_info(&pf->pdev->dev,
7624                                          "Error deleting mac filter on macvlan err %s, aq_err %s\n",
7625                                           i40e_stat_str(hw, ret),
7626                                           i40e_aq_str(hw, aq_err));
7627                         }
7628                         break;
7629                 }
7630         }
7631 }
7632
7633 /**
7634  * i40e_setup_tc - configure multiple traffic classes
7635  * @netdev: net device to configure
7636  * @type_data: tc offload data
7637  **/
7638 static int i40e_setup_tc(struct net_device *netdev, void *type_data)
7639 {
7640         struct tc_mqprio_qopt_offload *mqprio_qopt = type_data;
7641         struct i40e_netdev_priv *np = netdev_priv(netdev);
7642         struct i40e_vsi *vsi = np->vsi;
7643         struct i40e_pf *pf = vsi->back;
7644         u8 enabled_tc = 0, num_tc, hw;
7645         bool need_reset = false;
7646         int old_queue_pairs;
7647         int ret = -EINVAL;
7648         u16 mode;
7649         int i;
7650
7651         old_queue_pairs = vsi->num_queue_pairs;
7652         num_tc = mqprio_qopt->qopt.num_tc;
7653         hw = mqprio_qopt->qopt.hw;
7654         mode = mqprio_qopt->mode;
7655         if (!hw) {
7656                 pf->flags &= ~I40E_FLAG_TC_MQPRIO;
7657                 memcpy(&vsi->mqprio_qopt, mqprio_qopt, sizeof(*mqprio_qopt));
7658                 goto config_tc;
7659         }
7660
7661         /* Check if MFP enabled */
7662         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
7663                 netdev_info(netdev,
7664                             "Configuring TC not supported in MFP mode\n");
7665                 return ret;
7666         }
7667         switch (mode) {
7668         case TC_MQPRIO_MODE_DCB:
7669                 pf->flags &= ~I40E_FLAG_TC_MQPRIO;
7670
7671                 /* Check if DCB enabled to continue */
7672                 if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
7673                         netdev_info(netdev,
7674                                     "DCB is not enabled for adapter\n");
7675                         return ret;
7676                 }
7677
7678                 /* Check whether tc count is within enabled limit */
7679                 if (num_tc > i40e_pf_get_num_tc(pf)) {
7680                         netdev_info(netdev,
7681                                     "TC count greater than enabled on link for adapter\n");
7682                         return ret;
7683                 }
7684                 break;
7685         case TC_MQPRIO_MODE_CHANNEL:
7686                 if (pf->flags & I40E_FLAG_DCB_ENABLED) {
7687                         netdev_info(netdev,
7688                                     "Full offload of TC Mqprio options is not supported when DCB is enabled\n");
7689                         return ret;
7690                 }
7691                 if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7692                         return ret;
7693                 ret = i40e_validate_mqprio_qopt(vsi, mqprio_qopt);
7694                 if (ret)
7695                         return ret;
7696                 memcpy(&vsi->mqprio_qopt, mqprio_qopt,
7697                        sizeof(*mqprio_qopt));
7698                 pf->flags |= I40E_FLAG_TC_MQPRIO;
7699                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
7700                 break;
7701         default:
7702                 return -EINVAL;
7703         }
7704
7705 config_tc:
7706         /* Generate TC map for number of tc requested */
7707         for (i = 0; i < num_tc; i++)
7708                 enabled_tc |= BIT(i);
7709
7710         /* Requesting same TC configuration as already enabled */
7711         if (enabled_tc == vsi->tc_config.enabled_tc &&
7712             mode != TC_MQPRIO_MODE_CHANNEL)
7713                 return 0;
7714
7715         /* Quiesce VSI queues */
7716         i40e_quiesce_vsi(vsi);
7717
7718         if (!hw && !(pf->flags & I40E_FLAG_TC_MQPRIO))
7719                 i40e_remove_queue_channels(vsi);
7720
7721         /* Configure VSI for enabled TCs */
7722         ret = i40e_vsi_config_tc(vsi, enabled_tc);
7723         if (ret) {
7724                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
7725                             vsi->seid);
7726                 need_reset = true;
7727                 goto exit;
7728         } else if (enabled_tc &&
7729                    (!is_power_of_2(vsi->tc_config.tc_info[0].qcount))) {
7730                 netdev_info(netdev,
7731                             "Failed to create channel. Override queues (%u) not power of 2\n",
7732                             vsi->tc_config.tc_info[0].qcount);
7733                 ret = -EINVAL;
7734                 need_reset = true;
7735                 goto exit;
7736         }
7737
7738         dev_info(&vsi->back->pdev->dev,
7739                  "Setup channel (id:%u) utilizing num_queues %d\n",
7740                  vsi->seid, vsi->tc_config.tc_info[0].qcount);
7741
7742         if (pf->flags & I40E_FLAG_TC_MQPRIO) {
7743                 if (vsi->mqprio_qopt.max_rate[0]) {
7744                         u64 max_tx_rate = i40e_bw_bytes_to_mbits(vsi,
7745                                                   vsi->mqprio_qopt.max_rate[0]);
7746
7747                         ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
7748                         if (!ret) {
7749                                 u64 credits = max_tx_rate;
7750
7751                                 do_div(credits, I40E_BW_CREDIT_DIVISOR);
7752                                 dev_dbg(&vsi->back->pdev->dev,
7753                                         "Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
7754                                         max_tx_rate,
7755                                         credits,
7756                                         vsi->seid);
7757                         } else {
7758                                 need_reset = true;
7759                                 goto exit;
7760                         }
7761                 }
7762                 ret = i40e_configure_queue_channels(vsi);
7763                 if (ret) {
7764                         vsi->num_queue_pairs = old_queue_pairs;
7765                         netdev_info(netdev,
7766                                     "Failed configuring queue channels\n");
7767                         need_reset = true;
7768                         goto exit;
7769                 }
7770         }
7771
7772 exit:
7773         /* Reset the configuration data to defaults, only TC0 is enabled */
7774         if (need_reset) {
7775                 i40e_vsi_set_default_tc_config(vsi);
7776                 need_reset = false;
7777         }
7778
7779         /* Unquiesce VSI */
7780         i40e_unquiesce_vsi(vsi);
7781         return ret;
7782 }
7783
7784 /**
7785  * i40e_set_cld_element - sets cloud filter element data
7786  * @filter: cloud filter rule
7787  * @cld: ptr to cloud filter element data
7788  *
7789  * This is helper function to copy data into cloud filter element
7790  **/
7791 static inline void
7792 i40e_set_cld_element(struct i40e_cloud_filter *filter,
7793                      struct i40e_aqc_cloud_filters_element_data *cld)
7794 {
7795         u32 ipa;
7796         int i;
7797
7798         memset(cld, 0, sizeof(*cld));
7799         ether_addr_copy(cld->outer_mac, filter->dst_mac);
7800         ether_addr_copy(cld->inner_mac, filter->src_mac);
7801
7802         if (filter->n_proto != ETH_P_IP && filter->n_proto != ETH_P_IPV6)
7803                 return;
7804
7805         if (filter->n_proto == ETH_P_IPV6) {
7806 #define IPV6_MAX_INDEX  (ARRAY_SIZE(filter->dst_ipv6) - 1)
7807                 for (i = 0; i < ARRAY_SIZE(filter->dst_ipv6); i++) {
7808                         ipa = be32_to_cpu(filter->dst_ipv6[IPV6_MAX_INDEX - i]);
7809
7810                         *(__le32 *)&cld->ipaddr.raw_v6.data[i * 2] = cpu_to_le32(ipa);
7811                 }
7812         } else {
7813                 ipa = be32_to_cpu(filter->dst_ipv4);
7814
7815                 memcpy(&cld->ipaddr.v4.data, &ipa, sizeof(ipa));
7816         }
7817
7818         cld->inner_vlan = cpu_to_le16(ntohs(filter->vlan_id));
7819
7820         /* tenant_id is not supported by FW now, once the support is enabled
7821          * fill the cld->tenant_id with cpu_to_le32(filter->tenant_id)
7822          */
7823         if (filter->tenant_id)
7824                 return;
7825 }
7826
7827 /**
7828  * i40e_add_del_cloud_filter - Add/del cloud filter
7829  * @vsi: pointer to VSI
7830  * @filter: cloud filter rule
7831  * @add: if true, add, if false, delete
7832  *
7833  * Add or delete a cloud filter for a specific flow spec.
7834  * Returns 0 if the filter were successfully added.
7835  **/
7836 int i40e_add_del_cloud_filter(struct i40e_vsi *vsi,
7837                               struct i40e_cloud_filter *filter, bool add)
7838 {
7839         struct i40e_aqc_cloud_filters_element_data cld_filter;
7840         struct i40e_pf *pf = vsi->back;
7841         int ret;
7842         static const u16 flag_table[128] = {
7843                 [I40E_CLOUD_FILTER_FLAGS_OMAC]  =
7844                         I40E_AQC_ADD_CLOUD_FILTER_OMAC,
7845                 [I40E_CLOUD_FILTER_FLAGS_IMAC]  =
7846                         I40E_AQC_ADD_CLOUD_FILTER_IMAC,
7847                 [I40E_CLOUD_FILTER_FLAGS_IMAC_IVLAN]  =
7848                         I40E_AQC_ADD_CLOUD_FILTER_IMAC_IVLAN,
7849                 [I40E_CLOUD_FILTER_FLAGS_IMAC_TEN_ID] =
7850                         I40E_AQC_ADD_CLOUD_FILTER_IMAC_TEN_ID,
7851                 [I40E_CLOUD_FILTER_FLAGS_OMAC_TEN_ID_IMAC] =
7852                         I40E_AQC_ADD_CLOUD_FILTER_OMAC_TEN_ID_IMAC,
7853                 [I40E_CLOUD_FILTER_FLAGS_IMAC_IVLAN_TEN_ID] =
7854                         I40E_AQC_ADD_CLOUD_FILTER_IMAC_IVLAN_TEN_ID,
7855                 [I40E_CLOUD_FILTER_FLAGS_IIP] =
7856                         I40E_AQC_ADD_CLOUD_FILTER_IIP,
7857         };
7858
7859         if (filter->flags >= ARRAY_SIZE(flag_table))
7860                 return I40E_ERR_CONFIG;
7861
7862         memset(&cld_filter, 0, sizeof(cld_filter));
7863
7864         /* copy element needed to add cloud filter from filter */
7865         i40e_set_cld_element(filter, &cld_filter);
7866
7867         if (filter->tunnel_type != I40E_CLOUD_TNL_TYPE_NONE)
7868                 cld_filter.flags = cpu_to_le16(filter->tunnel_type <<
7869                                              I40E_AQC_ADD_CLOUD_TNL_TYPE_SHIFT);
7870
7871         if (filter->n_proto == ETH_P_IPV6)
7872                 cld_filter.flags |= cpu_to_le16(flag_table[filter->flags] |
7873                                                 I40E_AQC_ADD_CLOUD_FLAGS_IPV6);
7874         else
7875                 cld_filter.flags |= cpu_to_le16(flag_table[filter->flags] |
7876                                                 I40E_AQC_ADD_CLOUD_FLAGS_IPV4);
7877
7878         if (add)
7879                 ret = i40e_aq_add_cloud_filters(&pf->hw, filter->seid,
7880                                                 &cld_filter, 1);
7881         else
7882                 ret = i40e_aq_rem_cloud_filters(&pf->hw, filter->seid,
7883                                                 &cld_filter, 1);
7884         if (ret)
7885                 dev_dbg(&pf->pdev->dev,
7886                         "Failed to %s cloud filter using l4 port %u, err %d aq_err %d\n",
7887                         add ? "add" : "delete", filter->dst_port, ret,
7888                         pf->hw.aq.asq_last_status);
7889         else
7890                 dev_info(&pf->pdev->dev,
7891                          "%s cloud filter for VSI: %d\n",
7892                          add ? "Added" : "Deleted", filter->seid);
7893         return ret;
7894 }
7895
7896 /**
7897  * i40e_add_del_cloud_filter_big_buf - Add/del cloud filter using big_buf
7898  * @vsi: pointer to VSI
7899  * @filter: cloud filter rule
7900  * @add: if true, add, if false, delete
7901  *
7902  * Add or delete a cloud filter for a specific flow spec using big buffer.
7903  * Returns 0 if the filter were successfully added.
7904  **/
7905 int i40e_add_del_cloud_filter_big_buf(struct i40e_vsi *vsi,
7906                                       struct i40e_cloud_filter *filter,
7907                                       bool add)
7908 {
7909         struct i40e_aqc_cloud_filters_element_bb cld_filter;
7910         struct i40e_pf *pf = vsi->back;
7911         int ret;
7912
7913         /* Both (src/dst) valid mac_addr are not supported */
7914         if ((is_valid_ether_addr(filter->dst_mac) &&
7915              is_valid_ether_addr(filter->src_mac)) ||
7916             (is_multicast_ether_addr(filter->dst_mac) &&
7917              is_multicast_ether_addr(filter->src_mac)))
7918                 return -EOPNOTSUPP;
7919
7920         /* Big buffer cloud filter needs 'L4 port' to be non-zero. Also, UDP
7921          * ports are not supported via big buffer now.
7922          */
7923         if (!filter->dst_port || filter->ip_proto == IPPROTO_UDP)
7924                 return -EOPNOTSUPP;
7925
7926         /* adding filter using src_port/src_ip is not supported at this stage */
7927         if (filter->src_port ||
7928             (filter->src_ipv4 && filter->n_proto != ETH_P_IPV6) ||
7929             !ipv6_addr_any(&filter->ip.v6.src_ip6))
7930                 return -EOPNOTSUPP;
7931
7932         memset(&cld_filter, 0, sizeof(cld_filter));
7933
7934         /* copy element needed to add cloud filter from filter */
7935         i40e_set_cld_element(filter, &cld_filter.element);
7936
7937         if (is_valid_ether_addr(filter->dst_mac) ||
7938             is_valid_ether_addr(filter->src_mac) ||
7939             is_multicast_ether_addr(filter->dst_mac) ||
7940             is_multicast_ether_addr(filter->src_mac)) {
7941                 /* MAC + IP : unsupported mode */
7942                 if (filter->dst_ipv4)
7943                         return -EOPNOTSUPP;
7944
7945                 /* since we validated that L4 port must be valid before
7946                  * we get here, start with respective "flags" value
7947                  * and update if vlan is present or not
7948                  */
7949                 cld_filter.element.flags =
7950                         cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_MAC_PORT);
7951
7952                 if (filter->vlan_id) {
7953                         cld_filter.element.flags =
7954                         cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_MAC_VLAN_PORT);
7955                 }
7956
7957         } else if ((filter->dst_ipv4 && filter->n_proto != ETH_P_IPV6) ||
7958                    !ipv6_addr_any(&filter->ip.v6.dst_ip6)) {
7959                 cld_filter.element.flags =
7960                                 cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_IP_PORT);
7961                 if (filter->n_proto == ETH_P_IPV6)
7962                         cld_filter.element.flags |=
7963                                 cpu_to_le16(I40E_AQC_ADD_CLOUD_FLAGS_IPV6);
7964                 else
7965                         cld_filter.element.flags |=
7966                                 cpu_to_le16(I40E_AQC_ADD_CLOUD_FLAGS_IPV4);
7967         } else {
7968                 dev_err(&pf->pdev->dev,
7969                         "either mac or ip has to be valid for cloud filter\n");
7970                 return -EINVAL;
7971         }
7972
7973         /* Now copy L4 port in Byte 6..7 in general fields */
7974         cld_filter.general_fields[I40E_AQC_ADD_CLOUD_FV_FLU_0X16_WORD0] =
7975                                                 be16_to_cpu(filter->dst_port);
7976
7977         if (add) {
7978                 /* Validate current device switch mode, change if necessary */
7979                 ret = i40e_validate_and_set_switch_mode(vsi);
7980                 if (ret) {
7981                         dev_err(&pf->pdev->dev,
7982                                 "failed to set switch mode, ret %d\n",
7983                                 ret);
7984                         return ret;
7985                 }
7986
7987                 ret = i40e_aq_add_cloud_filters_bb(&pf->hw, filter->seid,
7988                                                    &cld_filter, 1);
7989         } else {
7990                 ret = i40e_aq_rem_cloud_filters_bb(&pf->hw, filter->seid,
7991                                                    &cld_filter, 1);
7992         }
7993
7994         if (ret)
7995                 dev_dbg(&pf->pdev->dev,
7996                         "Failed to %s cloud filter(big buffer) err %d aq_err %d\n",
7997                         add ? "add" : "delete", ret, pf->hw.aq.asq_last_status);
7998         else
7999                 dev_info(&pf->pdev->dev,
8000                          "%s cloud filter for VSI: %d, L4 port: %d\n",
8001                          add ? "add" : "delete", filter->seid,
8002                          ntohs(filter->dst_port));
8003         return ret;
8004 }
8005
8006 /**
8007  * i40e_parse_cls_flower - Parse tc flower filters provided by kernel
8008  * @vsi: Pointer to VSI
8009  * @f: Pointer to struct flow_cls_offload
8010  * @filter: Pointer to cloud filter structure
8011  *
8012  **/
8013 static int i40e_parse_cls_flower(struct i40e_vsi *vsi,
8014                                  struct flow_cls_offload *f,
8015                                  struct i40e_cloud_filter *filter)
8016 {
8017         struct flow_rule *rule = flow_cls_offload_flow_rule(f);
8018         struct flow_dissector *dissector = rule->match.dissector;
8019         u16 n_proto_mask = 0, n_proto_key = 0, addr_type = 0;
8020         struct i40e_pf *pf = vsi->back;
8021         u8 field_flags = 0;
8022
8023         if (dissector->used_keys &
8024             ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
8025               BIT(FLOW_DISSECTOR_KEY_BASIC) |
8026               BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
8027               BIT(FLOW_DISSECTOR_KEY_VLAN) |
8028               BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
8029               BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
8030               BIT(FLOW_DISSECTOR_KEY_PORTS) |
8031               BIT(FLOW_DISSECTOR_KEY_ENC_KEYID))) {
8032                 dev_err(&pf->pdev->dev, "Unsupported key used: 0x%x\n",
8033                         dissector->used_keys);
8034                 return -EOPNOTSUPP;
8035         }
8036
8037         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
8038                 struct flow_match_enc_keyid match;
8039
8040                 flow_rule_match_enc_keyid(rule, &match);
8041                 if (match.mask->keyid != 0)
8042                         field_flags |= I40E_CLOUD_FIELD_TEN_ID;
8043
8044                 filter->tenant_id = be32_to_cpu(match.key->keyid);
8045         }
8046
8047         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
8048                 struct flow_match_basic match;
8049
8050                 flow_rule_match_basic(rule, &match);
8051                 n_proto_key = ntohs(match.key->n_proto);
8052                 n_proto_mask = ntohs(match.mask->n_proto);
8053
8054                 if (n_proto_key == ETH_P_ALL) {
8055                         n_proto_key = 0;
8056                         n_proto_mask = 0;
8057                 }
8058                 filter->n_proto = n_proto_key & n_proto_mask;
8059                 filter->ip_proto = match.key->ip_proto;
8060         }
8061
8062         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
8063                 struct flow_match_eth_addrs match;
8064
8065                 flow_rule_match_eth_addrs(rule, &match);
8066
8067                 /* use is_broadcast and is_zero to check for all 0xf or 0 */
8068                 if (!is_zero_ether_addr(match.mask->dst)) {
8069                         if (is_broadcast_ether_addr(match.mask->dst)) {
8070                                 field_flags |= I40E_CLOUD_FIELD_OMAC;
8071                         } else {
8072                                 dev_err(&pf->pdev->dev, "Bad ether dest mask %pM\n",
8073                                         match.mask->dst);
8074                                 return I40E_ERR_CONFIG;
8075                         }
8076                 }
8077
8078                 if (!is_zero_ether_addr(match.mask->src)) {
8079                         if (is_broadcast_ether_addr(match.mask->src)) {
8080                                 field_flags |= I40E_CLOUD_FIELD_IMAC;
8081                         } else {
8082                                 dev_err(&pf->pdev->dev, "Bad ether src mask %pM\n",
8083                                         match.mask->src);
8084                                 return I40E_ERR_CONFIG;
8085                         }
8086                 }
8087                 ether_addr_copy(filter->dst_mac, match.key->dst);
8088                 ether_addr_copy(filter->src_mac, match.key->src);
8089         }
8090
8091         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) {
8092                 struct flow_match_vlan match;
8093
8094                 flow_rule_match_vlan(rule, &match);
8095                 if (match.mask->vlan_id) {
8096                         if (match.mask->vlan_id == VLAN_VID_MASK) {
8097                                 field_flags |= I40E_CLOUD_FIELD_IVLAN;
8098
8099                         } else {
8100                                 dev_err(&pf->pdev->dev, "Bad vlan mask 0x%04x\n",
8101                                         match.mask->vlan_id);
8102                                 return I40E_ERR_CONFIG;
8103                         }
8104                 }
8105
8106                 filter->vlan_id = cpu_to_be16(match.key->vlan_id);
8107         }
8108
8109         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
8110                 struct flow_match_control match;
8111
8112                 flow_rule_match_control(rule, &match);
8113                 addr_type = match.key->addr_type;
8114         }
8115
8116         if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
8117                 struct flow_match_ipv4_addrs match;
8118
8119                 flow_rule_match_ipv4_addrs(rule, &match);
8120                 if (match.mask->dst) {
8121                         if (match.mask->dst == cpu_to_be32(0xffffffff)) {
8122                                 field_flags |= I40E_CLOUD_FIELD_IIP;
8123                         } else {
8124                                 dev_err(&pf->pdev->dev, "Bad ip dst mask %pI4b\n",
8125                                         &match.mask->dst);
8126                                 return I40E_ERR_CONFIG;
8127                         }
8128                 }
8129
8130                 if (match.mask->src) {
8131                         if (match.mask->src == cpu_to_be32(0xffffffff)) {
8132                                 field_flags |= I40E_CLOUD_FIELD_IIP;
8133                         } else {
8134                                 dev_err(&pf->pdev->dev, "Bad ip src mask %pI4b\n",
8135                                         &match.mask->src);
8136                                 return I40E_ERR_CONFIG;
8137                         }
8138                 }
8139
8140                 if (field_flags & I40E_CLOUD_FIELD_TEN_ID) {
8141                         dev_err(&pf->pdev->dev, "Tenant id not allowed for ip filter\n");
8142                         return I40E_ERR_CONFIG;
8143                 }
8144                 filter->dst_ipv4 = match.key->dst;
8145                 filter->src_ipv4 = match.key->src;
8146         }
8147
8148         if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
8149                 struct flow_match_ipv6_addrs match;
8150
8151                 flow_rule_match_ipv6_addrs(rule, &match);
8152
8153                 /* src and dest IPV6 address should not be LOOPBACK
8154                  * (0:0:0:0:0:0:0:1), which can be represented as ::1
8155                  */
8156                 if (ipv6_addr_loopback(&match.key->dst) ||
8157                     ipv6_addr_loopback(&match.key->src)) {
8158                         dev_err(&pf->pdev->dev,
8159                                 "Bad ipv6, addr is LOOPBACK\n");
8160                         return I40E_ERR_CONFIG;
8161                 }
8162                 if (!ipv6_addr_any(&match.mask->dst) ||
8163                     !ipv6_addr_any(&match.mask->src))
8164                         field_flags |= I40E_CLOUD_FIELD_IIP;
8165
8166                 memcpy(&filter->src_ipv6, &match.key->src.s6_addr32,
8167                        sizeof(filter->src_ipv6));
8168                 memcpy(&filter->dst_ipv6, &match.key->dst.s6_addr32,
8169                        sizeof(filter->dst_ipv6));
8170         }
8171
8172         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
8173                 struct flow_match_ports match;
8174
8175                 flow_rule_match_ports(rule, &match);
8176                 if (match.mask->src) {
8177                         if (match.mask->src == cpu_to_be16(0xffff)) {
8178                                 field_flags |= I40E_CLOUD_FIELD_IIP;
8179                         } else {
8180                                 dev_err(&pf->pdev->dev, "Bad src port mask 0x%04x\n",
8181                                         be16_to_cpu(match.mask->src));
8182                                 return I40E_ERR_CONFIG;
8183                         }
8184                 }
8185
8186                 if (match.mask->dst) {
8187                         if (match.mask->dst == cpu_to_be16(0xffff)) {
8188                                 field_flags |= I40E_CLOUD_FIELD_IIP;
8189                         } else {
8190                                 dev_err(&pf->pdev->dev, "Bad dst port mask 0x%04x\n",
8191                                         be16_to_cpu(match.mask->dst));
8192                                 return I40E_ERR_CONFIG;
8193                         }
8194                 }
8195
8196                 filter->dst_port = match.key->dst;
8197                 filter->src_port = match.key->src;
8198
8199                 switch (filter->ip_proto) {
8200                 case IPPROTO_TCP:
8201                 case IPPROTO_UDP:
8202                         break;
8203                 default:
8204                         dev_err(&pf->pdev->dev,
8205                                 "Only UDP and TCP transport are supported\n");
8206                         return -EINVAL;
8207                 }
8208         }
8209         filter->flags = field_flags;
8210         return 0;
8211 }
8212
8213 /**
8214  * i40e_handle_tclass: Forward to a traffic class on the device
8215  * @vsi: Pointer to VSI
8216  * @tc: traffic class index on the device
8217  * @filter: Pointer to cloud filter structure
8218  *
8219  **/
8220 static int i40e_handle_tclass(struct i40e_vsi *vsi, u32 tc,
8221                               struct i40e_cloud_filter *filter)
8222 {
8223         struct i40e_channel *ch, *ch_tmp;
8224
8225         /* direct to a traffic class on the same device */
8226         if (tc == 0) {
8227                 filter->seid = vsi->seid;
8228                 return 0;
8229         } else if (vsi->tc_config.enabled_tc & BIT(tc)) {
8230                 if (!filter->dst_port) {
8231                         dev_err(&vsi->back->pdev->dev,
8232                                 "Specify destination port to direct to traffic class that is not default\n");
8233                         return -EINVAL;
8234                 }
8235                 if (list_empty(&vsi->ch_list))
8236                         return -EINVAL;
8237                 list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list,
8238                                          list) {
8239                         if (ch->seid == vsi->tc_seid_map[tc])
8240                                 filter->seid = ch->seid;
8241                 }
8242                 return 0;
8243         }
8244         dev_err(&vsi->back->pdev->dev, "TC is not enabled\n");
8245         return -EINVAL;
8246 }
8247
8248 /**
8249  * i40e_configure_clsflower - Configure tc flower filters
8250  * @vsi: Pointer to VSI
8251  * @cls_flower: Pointer to struct flow_cls_offload
8252  *
8253  **/
8254 static int i40e_configure_clsflower(struct i40e_vsi *vsi,
8255                                     struct flow_cls_offload *cls_flower)
8256 {
8257         int tc = tc_classid_to_hwtc(vsi->netdev, cls_flower->classid);
8258         struct i40e_cloud_filter *filter = NULL;
8259         struct i40e_pf *pf = vsi->back;
8260         int err = 0;
8261
8262         if (tc < 0) {
8263                 dev_err(&vsi->back->pdev->dev, "Invalid traffic class\n");
8264                 return -EOPNOTSUPP;
8265         }
8266
8267         if (!tc) {
8268                 dev_err(&pf->pdev->dev, "Unable to add filter because of invalid destination");
8269                 return -EINVAL;
8270         }
8271
8272         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
8273             test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
8274                 return -EBUSY;
8275
8276         if (pf->fdir_pf_active_filters ||
8277             (!hlist_empty(&pf->fdir_filter_list))) {
8278                 dev_err(&vsi->back->pdev->dev,
8279                         "Flow Director Sideband filters exists, turn ntuple off to configure cloud filters\n");
8280                 return -EINVAL;
8281         }
8282
8283         if (vsi->back->flags & I40E_FLAG_FD_SB_ENABLED) {
8284                 dev_err(&vsi->back->pdev->dev,
8285                         "Disable Flow Director Sideband, configuring Cloud filters via tc-flower\n");
8286                 vsi->back->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8287                 vsi->back->flags |= I40E_FLAG_FD_SB_TO_CLOUD_FILTER;
8288         }
8289
8290         filter = kzalloc(sizeof(*filter), GFP_KERNEL);
8291         if (!filter)
8292                 return -ENOMEM;
8293
8294         filter->cookie = cls_flower->cookie;
8295
8296         err = i40e_parse_cls_flower(vsi, cls_flower, filter);
8297         if (err < 0)
8298                 goto err;
8299
8300         err = i40e_handle_tclass(vsi, tc, filter);
8301         if (err < 0)
8302                 goto err;
8303
8304         /* Add cloud filter */
8305         if (filter->dst_port)
8306                 err = i40e_add_del_cloud_filter_big_buf(vsi, filter, true);
8307         else
8308                 err = i40e_add_del_cloud_filter(vsi, filter, true);
8309
8310         if (err) {
8311                 dev_err(&pf->pdev->dev, "Failed to add cloud filter, err %d\n",
8312                         err);
8313                 goto err;
8314         }
8315
8316         /* add filter to the ordered list */
8317         INIT_HLIST_NODE(&filter->cloud_node);
8318
8319         hlist_add_head(&filter->cloud_node, &pf->cloud_filter_list);
8320
8321         pf->num_cloud_filters++;
8322
8323         return err;
8324 err:
8325         kfree(filter);
8326         return err;
8327 }
8328
8329 /**
8330  * i40e_find_cloud_filter - Find the could filter in the list
8331  * @vsi: Pointer to VSI
8332  * @cookie: filter specific cookie
8333  *
8334  **/
8335 static struct i40e_cloud_filter *i40e_find_cloud_filter(struct i40e_vsi *vsi,
8336                                                         unsigned long *cookie)
8337 {
8338         struct i40e_cloud_filter *filter = NULL;
8339         struct hlist_node *node2;
8340
8341         hlist_for_each_entry_safe(filter, node2,
8342                                   &vsi->back->cloud_filter_list, cloud_node)
8343                 if (!memcmp(cookie, &filter->cookie, sizeof(filter->cookie)))
8344                         return filter;
8345         return NULL;
8346 }
8347
8348 /**
8349  * i40e_delete_clsflower - Remove tc flower filters
8350  * @vsi: Pointer to VSI
8351  * @cls_flower: Pointer to struct flow_cls_offload
8352  *
8353  **/
8354 static int i40e_delete_clsflower(struct i40e_vsi *vsi,
8355                                  struct flow_cls_offload *cls_flower)
8356 {
8357         struct i40e_cloud_filter *filter = NULL;
8358         struct i40e_pf *pf = vsi->back;
8359         int err = 0;
8360
8361         filter = i40e_find_cloud_filter(vsi, &cls_flower->cookie);
8362
8363         if (!filter)
8364                 return -EINVAL;
8365
8366         hash_del(&filter->cloud_node);
8367
8368         if (filter->dst_port)
8369                 err = i40e_add_del_cloud_filter_big_buf(vsi, filter, false);
8370         else
8371                 err = i40e_add_del_cloud_filter(vsi, filter, false);
8372
8373         kfree(filter);
8374         if (err) {
8375                 dev_err(&pf->pdev->dev,
8376                         "Failed to delete cloud filter, err %s\n",
8377                         i40e_stat_str(&pf->hw, err));
8378                 return i40e_aq_rc_to_posix(err, pf->hw.aq.asq_last_status);
8379         }
8380
8381         pf->num_cloud_filters--;
8382         if (!pf->num_cloud_filters)
8383                 if ((pf->flags & I40E_FLAG_FD_SB_TO_CLOUD_FILTER) &&
8384                     !(pf->flags & I40E_FLAG_FD_SB_INACTIVE)) {
8385                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8386                         pf->flags &= ~I40E_FLAG_FD_SB_TO_CLOUD_FILTER;
8387                         pf->flags &= ~I40E_FLAG_FD_SB_INACTIVE;
8388                 }
8389         return 0;
8390 }
8391
8392 /**
8393  * i40e_setup_tc_cls_flower - flower classifier offloads
8394  * @np: net device to configure
8395  * @cls_flower: offload data
8396  **/
8397 static int i40e_setup_tc_cls_flower(struct i40e_netdev_priv *np,
8398                                     struct flow_cls_offload *cls_flower)
8399 {
8400         struct i40e_vsi *vsi = np->vsi;
8401
8402         switch (cls_flower->command) {
8403         case FLOW_CLS_REPLACE:
8404                 return i40e_configure_clsflower(vsi, cls_flower);
8405         case FLOW_CLS_DESTROY:
8406                 return i40e_delete_clsflower(vsi, cls_flower);
8407         case FLOW_CLS_STATS:
8408                 return -EOPNOTSUPP;
8409         default:
8410                 return -EOPNOTSUPP;
8411         }
8412 }
8413
8414 static int i40e_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
8415                                   void *cb_priv)
8416 {
8417         struct i40e_netdev_priv *np = cb_priv;
8418
8419         if (!tc_cls_can_offload_and_chain0(np->vsi->netdev, type_data))
8420                 return -EOPNOTSUPP;
8421
8422         switch (type) {
8423         case TC_SETUP_CLSFLOWER:
8424                 return i40e_setup_tc_cls_flower(np, type_data);
8425
8426         default:
8427                 return -EOPNOTSUPP;
8428         }
8429 }
8430
8431 static LIST_HEAD(i40e_block_cb_list);
8432
8433 static int __i40e_setup_tc(struct net_device *netdev, enum tc_setup_type type,
8434                            void *type_data)
8435 {
8436         struct i40e_netdev_priv *np = netdev_priv(netdev);
8437
8438         switch (type) {
8439         case TC_SETUP_QDISC_MQPRIO:
8440                 return i40e_setup_tc(netdev, type_data);
8441         case TC_SETUP_BLOCK:
8442                 return flow_block_cb_setup_simple(type_data,
8443                                                   &i40e_block_cb_list,
8444                                                   i40e_setup_tc_block_cb,
8445                                                   np, np, true);
8446         default:
8447                 return -EOPNOTSUPP;
8448         }
8449 }
8450
8451 /**
8452  * i40e_open - Called when a network interface is made active
8453  * @netdev: network interface device structure
8454  *
8455  * The open entry point is called when a network interface is made
8456  * active by the system (IFF_UP).  At this point all resources needed
8457  * for transmit and receive operations are allocated, the interrupt
8458  * handler is registered with the OS, the netdev watchdog subtask is
8459  * enabled, and the stack is notified that the interface is ready.
8460  *
8461  * Returns 0 on success, negative value on failure
8462  **/
8463 int i40e_open(struct net_device *netdev)
8464 {
8465         struct i40e_netdev_priv *np = netdev_priv(netdev);
8466         struct i40e_vsi *vsi = np->vsi;
8467         struct i40e_pf *pf = vsi->back;
8468         int err;
8469
8470         /* disallow open during test or if eeprom is broken */
8471         if (test_bit(__I40E_TESTING, pf->state) ||
8472             test_bit(__I40E_BAD_EEPROM, pf->state))
8473                 return -EBUSY;
8474
8475         netif_carrier_off(netdev);
8476
8477         if (i40e_force_link_state(pf, true))
8478                 return -EAGAIN;
8479
8480         err = i40e_vsi_open(vsi);
8481         if (err)
8482                 return err;
8483
8484         /* configure global TSO hardware offload settings */
8485         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
8486                                                        TCP_FLAG_FIN) >> 16);
8487         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
8488                                                        TCP_FLAG_FIN |
8489                                                        TCP_FLAG_CWR) >> 16);
8490         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
8491
8492         udp_tunnel_get_rx_info(netdev);
8493
8494         return 0;
8495 }
8496
8497 /**
8498  * i40e_netif_set_realnum_tx_rx_queues - Update number of tx/rx queues
8499  * @vsi: vsi structure
8500  *
8501  * This updates netdev's number of tx/rx queues
8502  *
8503  * Returns status of setting tx/rx queues
8504  **/
8505 static int i40e_netif_set_realnum_tx_rx_queues(struct i40e_vsi *vsi)
8506 {
8507         int ret;
8508
8509         ret = netif_set_real_num_rx_queues(vsi->netdev,
8510                                            vsi->num_queue_pairs);
8511         if (ret)
8512                 return ret;
8513
8514         return netif_set_real_num_tx_queues(vsi->netdev,
8515                                             vsi->num_queue_pairs);
8516 }
8517
8518 /**
8519  * i40e_vsi_open -
8520  * @vsi: the VSI to open
8521  *
8522  * Finish initialization of the VSI.
8523  *
8524  * Returns 0 on success, negative value on failure
8525  *
8526  * Note: expects to be called while under rtnl_lock()
8527  **/
8528 int i40e_vsi_open(struct i40e_vsi *vsi)
8529 {
8530         struct i40e_pf *pf = vsi->back;
8531         char int_name[I40E_INT_NAME_STR_LEN];
8532         int err;
8533
8534         /* allocate descriptors */
8535         err = i40e_vsi_setup_tx_resources(vsi);
8536         if (err)
8537                 goto err_setup_tx;
8538         err = i40e_vsi_setup_rx_resources(vsi);
8539         if (err)
8540                 goto err_setup_rx;
8541
8542         err = i40e_vsi_configure(vsi);
8543         if (err)
8544                 goto err_setup_rx;
8545
8546         if (vsi->netdev) {
8547                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
8548                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
8549                 err = i40e_vsi_request_irq(vsi, int_name);
8550                 if (err)
8551                         goto err_setup_rx;
8552
8553                 /* Notify the stack of the actual queue counts. */
8554                 err = i40e_netif_set_realnum_tx_rx_queues(vsi);
8555                 if (err)
8556                         goto err_set_queues;
8557
8558         } else if (vsi->type == I40E_VSI_FDIR) {
8559                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
8560                          dev_driver_string(&pf->pdev->dev),
8561                          dev_name(&pf->pdev->dev));
8562                 err = i40e_vsi_request_irq(vsi, int_name);
8563                 if (err)
8564                         goto err_setup_rx;
8565
8566         } else {
8567                 err = -EINVAL;
8568                 goto err_setup_rx;
8569         }
8570
8571         err = i40e_up_complete(vsi);
8572         if (err)
8573                 goto err_up_complete;
8574
8575         return 0;
8576
8577 err_up_complete:
8578         i40e_down(vsi);
8579 err_set_queues:
8580         i40e_vsi_free_irq(vsi);
8581 err_setup_rx:
8582         i40e_vsi_free_rx_resources(vsi);
8583 err_setup_tx:
8584         i40e_vsi_free_tx_resources(vsi);
8585         if (vsi == pf->vsi[pf->lan_vsi])
8586                 i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
8587
8588         return err;
8589 }
8590
8591 /**
8592  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
8593  * @pf: Pointer to PF
8594  *
8595  * This function destroys the hlist where all the Flow Director
8596  * filters were saved.
8597  **/
8598 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
8599 {
8600         struct i40e_fdir_filter *filter;
8601         struct i40e_flex_pit *pit_entry, *tmp;
8602         struct hlist_node *node2;
8603
8604         hlist_for_each_entry_safe(filter, node2,
8605                                   &pf->fdir_filter_list, fdir_node) {
8606                 hlist_del(&filter->fdir_node);
8607                 kfree(filter);
8608         }
8609
8610         list_for_each_entry_safe(pit_entry, tmp, &pf->l3_flex_pit_list, list) {
8611                 list_del(&pit_entry->list);
8612                 kfree(pit_entry);
8613         }
8614         INIT_LIST_HEAD(&pf->l3_flex_pit_list);
8615
8616         list_for_each_entry_safe(pit_entry, tmp, &pf->l4_flex_pit_list, list) {
8617                 list_del(&pit_entry->list);
8618                 kfree(pit_entry);
8619         }
8620         INIT_LIST_HEAD(&pf->l4_flex_pit_list);
8621
8622         pf->fdir_pf_active_filters = 0;
8623         pf->fd_tcp4_filter_cnt = 0;
8624         pf->fd_udp4_filter_cnt = 0;
8625         pf->fd_sctp4_filter_cnt = 0;
8626         pf->fd_ip4_filter_cnt = 0;
8627
8628         /* Reprogram the default input set for TCP/IPv4 */
8629         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_TCP,
8630                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
8631                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
8632
8633         /* Reprogram the default input set for UDP/IPv4 */
8634         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_UDP,
8635                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
8636                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
8637
8638         /* Reprogram the default input set for SCTP/IPv4 */
8639         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_SCTP,
8640                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
8641                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
8642
8643         /* Reprogram the default input set for Other/IPv4 */
8644         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_OTHER,
8645                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK);
8646
8647         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_FRAG_IPV4,
8648                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK);
8649 }
8650
8651 /**
8652  * i40e_cloud_filter_exit - Cleans up the cloud filters
8653  * @pf: Pointer to PF
8654  *
8655  * This function destroys the hlist where all the cloud filters
8656  * were saved.
8657  **/
8658 static void i40e_cloud_filter_exit(struct i40e_pf *pf)
8659 {
8660         struct i40e_cloud_filter *cfilter;
8661         struct hlist_node *node;
8662
8663         hlist_for_each_entry_safe(cfilter, node,
8664                                   &pf->cloud_filter_list, cloud_node) {
8665                 hlist_del(&cfilter->cloud_node);
8666                 kfree(cfilter);
8667         }
8668         pf->num_cloud_filters = 0;
8669
8670         if ((pf->flags & I40E_FLAG_FD_SB_TO_CLOUD_FILTER) &&
8671             !(pf->flags & I40E_FLAG_FD_SB_INACTIVE)) {
8672                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8673                 pf->flags &= ~I40E_FLAG_FD_SB_TO_CLOUD_FILTER;
8674                 pf->flags &= ~I40E_FLAG_FD_SB_INACTIVE;
8675         }
8676 }
8677
8678 /**
8679  * i40e_close - Disables a network interface
8680  * @netdev: network interface device structure
8681  *
8682  * The close entry point is called when an interface is de-activated
8683  * by the OS.  The hardware is still under the driver's control, but
8684  * this netdev interface is disabled.
8685  *
8686  * Returns 0, this is not allowed to fail
8687  **/
8688 int i40e_close(struct net_device *netdev)
8689 {
8690         struct i40e_netdev_priv *np = netdev_priv(netdev);
8691         struct i40e_vsi *vsi = np->vsi;
8692
8693         i40e_vsi_close(vsi);
8694
8695         return 0;
8696 }
8697
8698 /**
8699  * i40e_do_reset - Start a PF or Core Reset sequence
8700  * @pf: board private structure
8701  * @reset_flags: which reset is requested
8702  * @lock_acquired: indicates whether or not the lock has been acquired
8703  * before this function was called.
8704  *
8705  * The essential difference in resets is that the PF Reset
8706  * doesn't clear the packet buffers, doesn't reset the PE
8707  * firmware, and doesn't bother the other PFs on the chip.
8708  **/
8709 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags, bool lock_acquired)
8710 {
8711         u32 val;
8712
8713         /* do the biggest reset indicated */
8714         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
8715
8716                 /* Request a Global Reset
8717                  *
8718                  * This will start the chip's countdown to the actual full
8719                  * chip reset event, and a warning interrupt to be sent
8720                  * to all PFs, including the requestor.  Our handler
8721                  * for the warning interrupt will deal with the shutdown
8722                  * and recovery of the switch setup.
8723                  */
8724                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
8725                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
8726                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
8727                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
8728
8729         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
8730
8731                 /* Request a Core Reset
8732                  *
8733                  * Same as Global Reset, except does *not* include the MAC/PHY
8734                  */
8735                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
8736                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
8737                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
8738                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
8739                 i40e_flush(&pf->hw);
8740
8741         } else if (reset_flags & I40E_PF_RESET_FLAG) {
8742
8743                 /* Request a PF Reset
8744                  *
8745                  * Resets only the PF-specific registers
8746                  *
8747                  * This goes directly to the tear-down and rebuild of
8748                  * the switch, since we need to do all the recovery as
8749                  * for the Core Reset.
8750                  */
8751                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
8752                 i40e_handle_reset_warning(pf, lock_acquired);
8753
8754         } else if (reset_flags & I40E_PF_RESET_AND_REBUILD_FLAG) {
8755                 /* Request a PF Reset
8756                  *
8757                  * Resets PF and reinitializes PFs VSI.
8758                  */
8759                 i40e_prep_for_reset(pf, lock_acquired);
8760                 i40e_reset_and_rebuild(pf, true, lock_acquired);
8761                 dev_info(&pf->pdev->dev,
8762                          pf->flags & I40E_FLAG_DISABLE_FW_LLDP ?
8763                          "FW LLDP is disabled\n" :
8764                          "FW LLDP is enabled\n");
8765
8766         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
8767                 int v;
8768
8769                 /* Find the VSI(s) that requested a re-init */
8770                 dev_info(&pf->pdev->dev,
8771                          "VSI reinit requested\n");
8772                 for (v = 0; v < pf->num_alloc_vsi; v++) {
8773                         struct i40e_vsi *vsi = pf->vsi[v];
8774
8775                         if (vsi != NULL &&
8776                             test_and_clear_bit(__I40E_VSI_REINIT_REQUESTED,
8777                                                vsi->state))
8778                                 i40e_vsi_reinit_locked(pf->vsi[v]);
8779                 }
8780         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
8781                 int v;
8782
8783                 /* Find the VSI(s) that needs to be brought down */
8784                 dev_info(&pf->pdev->dev, "VSI down requested\n");
8785                 for (v = 0; v < pf->num_alloc_vsi; v++) {
8786                         struct i40e_vsi *vsi = pf->vsi[v];
8787
8788                         if (vsi != NULL &&
8789                             test_and_clear_bit(__I40E_VSI_DOWN_REQUESTED,
8790                                                vsi->state)) {
8791                                 set_bit(__I40E_VSI_DOWN, vsi->state);
8792                                 i40e_down(vsi);
8793                         }
8794                 }
8795         } else {
8796                 dev_info(&pf->pdev->dev,
8797                          "bad reset request 0x%08x\n", reset_flags);
8798         }
8799 }
8800
8801 #ifdef CONFIG_I40E_DCB
8802 /**
8803  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
8804  * @pf: board private structure
8805  * @old_cfg: current DCB config
8806  * @new_cfg: new DCB config
8807  **/
8808 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
8809                             struct i40e_dcbx_config *old_cfg,
8810                             struct i40e_dcbx_config *new_cfg)
8811 {
8812         bool need_reconfig = false;
8813
8814         /* Check if ETS configuration has changed */
8815         if (memcmp(&new_cfg->etscfg,
8816                    &old_cfg->etscfg,
8817                    sizeof(new_cfg->etscfg))) {
8818                 /* If Priority Table has changed reconfig is needed */
8819                 if (memcmp(&new_cfg->etscfg.prioritytable,
8820                            &old_cfg->etscfg.prioritytable,
8821                            sizeof(new_cfg->etscfg.prioritytable))) {
8822                         need_reconfig = true;
8823                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
8824                 }
8825
8826                 if (memcmp(&new_cfg->etscfg.tcbwtable,
8827                            &old_cfg->etscfg.tcbwtable,
8828                            sizeof(new_cfg->etscfg.tcbwtable)))
8829                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
8830
8831                 if (memcmp(&new_cfg->etscfg.tsatable,
8832                            &old_cfg->etscfg.tsatable,
8833                            sizeof(new_cfg->etscfg.tsatable)))
8834                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
8835         }
8836
8837         /* Check if PFC configuration has changed */
8838         if (memcmp(&new_cfg->pfc,
8839                    &old_cfg->pfc,
8840                    sizeof(new_cfg->pfc))) {
8841                 need_reconfig = true;
8842                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
8843         }
8844
8845         /* Check if APP Table has changed */
8846         if (memcmp(&new_cfg->app,
8847                    &old_cfg->app,
8848                    sizeof(new_cfg->app))) {
8849                 need_reconfig = true;
8850                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
8851         }
8852
8853         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
8854         return need_reconfig;
8855 }
8856
8857 /**
8858  * i40e_handle_lldp_event - Handle LLDP Change MIB event
8859  * @pf: board private structure
8860  * @e: event info posted on ARQ
8861  **/
8862 static int i40e_handle_lldp_event(struct i40e_pf *pf,
8863                                   struct i40e_arq_event_info *e)
8864 {
8865         struct i40e_aqc_lldp_get_mib *mib =
8866                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
8867         struct i40e_hw *hw = &pf->hw;
8868         struct i40e_dcbx_config tmp_dcbx_cfg;
8869         bool need_reconfig = false;
8870         int ret = 0;
8871         u8 type;
8872
8873         /* Not DCB capable or capability disabled */
8874         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
8875                 return ret;
8876
8877         /* Ignore if event is not for Nearest Bridge */
8878         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
8879                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
8880         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
8881         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
8882                 return ret;
8883
8884         /* Check MIB Type and return if event for Remote MIB update */
8885         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
8886         dev_dbg(&pf->pdev->dev,
8887                 "LLDP event mib type %s\n", type ? "remote" : "local");
8888         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
8889                 /* Update the remote cached instance and return */
8890                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
8891                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
8892                                 &hw->remote_dcbx_config);
8893                 goto exit;
8894         }
8895
8896         /* Store the old configuration */
8897         tmp_dcbx_cfg = hw->local_dcbx_config;
8898
8899         /* Reset the old DCBx configuration data */
8900         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
8901         /* Get updated DCBX data from firmware */
8902         ret = i40e_get_dcb_config(&pf->hw);
8903         if (ret) {
8904                 dev_info(&pf->pdev->dev,
8905                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
8906                          i40e_stat_str(&pf->hw, ret),
8907                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8908                 goto exit;
8909         }
8910
8911         /* No change detected in DCBX configs */
8912         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
8913                     sizeof(tmp_dcbx_cfg))) {
8914                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
8915                 goto exit;
8916         }
8917
8918         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
8919                                                &hw->local_dcbx_config);
8920
8921         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
8922
8923         if (!need_reconfig)
8924                 goto exit;
8925
8926         /* Enable DCB tagging only when more than one TC */
8927         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
8928                 pf->flags |= I40E_FLAG_DCB_ENABLED;
8929         else
8930                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
8931
8932         set_bit(__I40E_PORT_SUSPENDED, pf->state);
8933         /* Reconfiguration needed quiesce all VSIs */
8934         i40e_pf_quiesce_all_vsi(pf);
8935
8936         /* Changes in configuration update VEB/VSI */
8937         i40e_dcb_reconfigure(pf);
8938
8939         ret = i40e_resume_port_tx(pf);
8940
8941         clear_bit(__I40E_PORT_SUSPENDED, pf->state);
8942         /* In case of error no point in resuming VSIs */
8943         if (ret)
8944                 goto exit;
8945
8946         /* Wait for the PF's queues to be disabled */
8947         ret = i40e_pf_wait_queues_disabled(pf);
8948         if (ret) {
8949                 /* Schedule PF reset to recover */
8950                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
8951                 i40e_service_event_schedule(pf);
8952         } else {
8953                 i40e_pf_unquiesce_all_vsi(pf);
8954                 set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
8955                 set_bit(__I40E_CLIENT_L2_CHANGE, pf->state);
8956         }
8957
8958 exit:
8959         return ret;
8960 }
8961 #endif /* CONFIG_I40E_DCB */
8962
8963 /**
8964  * i40e_do_reset_safe - Protected reset path for userland calls.
8965  * @pf: board private structure
8966  * @reset_flags: which reset is requested
8967  *
8968  **/
8969 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
8970 {
8971         rtnl_lock();
8972         i40e_do_reset(pf, reset_flags, true);
8973         rtnl_unlock();
8974 }
8975
8976 /**
8977  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
8978  * @pf: board private structure
8979  * @e: event info posted on ARQ
8980  *
8981  * Handler for LAN Queue Overflow Event generated by the firmware for PF
8982  * and VF queues
8983  **/
8984 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
8985                                            struct i40e_arq_event_info *e)
8986 {
8987         struct i40e_aqc_lan_overflow *data =
8988                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
8989         u32 queue = le32_to_cpu(data->prtdcb_rupto);
8990         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
8991         struct i40e_hw *hw = &pf->hw;
8992         struct i40e_vf *vf;
8993         u16 vf_id;
8994
8995         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
8996                 queue, qtx_ctl);
8997
8998         /* Queue belongs to VF, find the VF and issue VF reset */
8999         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
9000             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
9001                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
9002                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
9003                 vf_id -= hw->func_caps.vf_base_id;
9004                 vf = &pf->vf[vf_id];
9005                 i40e_vc_notify_vf_reset(vf);
9006                 /* Allow VF to process pending reset notification */
9007                 msleep(20);
9008                 i40e_reset_vf(vf, false);
9009         }
9010 }
9011
9012 /**
9013  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
9014  * @pf: board private structure
9015  **/
9016 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
9017 {
9018         u32 val, fcnt_prog;
9019
9020         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
9021         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
9022         return fcnt_prog;
9023 }
9024
9025 /**
9026  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
9027  * @pf: board private structure
9028  **/
9029 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
9030 {
9031         u32 val, fcnt_prog;
9032
9033         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
9034         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
9035                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
9036                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
9037         return fcnt_prog;
9038 }
9039
9040 /**
9041  * i40e_get_global_fd_count - Get total FD filters programmed on device
9042  * @pf: board private structure
9043  **/
9044 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
9045 {
9046         u32 val, fcnt_prog;
9047
9048         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
9049         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
9050                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
9051                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
9052         return fcnt_prog;
9053 }
9054
9055 /**
9056  * i40e_reenable_fdir_sb - Restore FDir SB capability
9057  * @pf: board private structure
9058  **/
9059 static void i40e_reenable_fdir_sb(struct i40e_pf *pf)
9060 {
9061         if (test_and_clear_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
9062                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
9063                     (I40E_DEBUG_FD & pf->hw.debug_mask))
9064                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
9065 }
9066
9067 /**
9068  * i40e_reenable_fdir_atr - Restore FDir ATR capability
9069  * @pf: board private structure
9070  **/
9071 static void i40e_reenable_fdir_atr(struct i40e_pf *pf)
9072 {
9073         if (test_and_clear_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state)) {
9074                 /* ATR uses the same filtering logic as SB rules. It only
9075                  * functions properly if the input set mask is at the default
9076                  * settings. It is safe to restore the default input set
9077                  * because there are no active TCPv4 filter rules.
9078                  */
9079                 i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_TCP,
9080                                         I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
9081                                         I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
9082
9083                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
9084                     (I40E_DEBUG_FD & pf->hw.debug_mask))
9085                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table and there are no conflicting ntuple rules\n");
9086         }
9087 }
9088
9089 /**
9090  * i40e_delete_invalid_filter - Delete an invalid FDIR filter
9091  * @pf: board private structure
9092  * @filter: FDir filter to remove
9093  */
9094 static void i40e_delete_invalid_filter(struct i40e_pf *pf,
9095                                        struct i40e_fdir_filter *filter)
9096 {
9097         /* Update counters */
9098         pf->fdir_pf_active_filters--;
9099         pf->fd_inv = 0;
9100
9101         switch (filter->flow_type) {
9102         case TCP_V4_FLOW:
9103                 pf->fd_tcp4_filter_cnt--;
9104                 break;
9105         case UDP_V4_FLOW:
9106                 pf->fd_udp4_filter_cnt--;
9107                 break;
9108         case SCTP_V4_FLOW:
9109                 pf->fd_sctp4_filter_cnt--;
9110                 break;
9111         case IP_USER_FLOW:
9112                 switch (filter->ip4_proto) {
9113                 case IPPROTO_TCP:
9114                         pf->fd_tcp4_filter_cnt--;
9115                         break;
9116                 case IPPROTO_UDP:
9117                         pf->fd_udp4_filter_cnt--;
9118                         break;
9119                 case IPPROTO_SCTP:
9120                         pf->fd_sctp4_filter_cnt--;
9121                         break;
9122                 case IPPROTO_IP:
9123                         pf->fd_ip4_filter_cnt--;
9124                         break;
9125                 }
9126                 break;
9127         }
9128
9129         /* Remove the filter from the list and free memory */
9130         hlist_del(&filter->fdir_node);
9131         kfree(filter);
9132 }
9133
9134 /**
9135  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
9136  * @pf: board private structure
9137  **/
9138 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
9139 {
9140         struct i40e_fdir_filter *filter;
9141         u32 fcnt_prog, fcnt_avail;
9142         struct hlist_node *node;
9143
9144         if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
9145                 return;
9146
9147         /* Check if we have enough room to re-enable FDir SB capability. */
9148         fcnt_prog = i40e_get_global_fd_count(pf);
9149         fcnt_avail = pf->fdir_pf_filter_count;
9150         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
9151             (pf->fd_add_err == 0) ||
9152             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt))
9153                 i40e_reenable_fdir_sb(pf);
9154
9155         /* We should wait for even more space before re-enabling ATR.
9156          * Additionally, we cannot enable ATR as long as we still have TCP SB
9157          * rules active.
9158          */
9159         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) &&
9160             (pf->fd_tcp4_filter_cnt == 0))
9161                 i40e_reenable_fdir_atr(pf);
9162
9163         /* if hw had a problem adding a filter, delete it */
9164         if (pf->fd_inv > 0) {
9165                 hlist_for_each_entry_safe(filter, node,
9166                                           &pf->fdir_filter_list, fdir_node)
9167                         if (filter->fd_id == pf->fd_inv)
9168                                 i40e_delete_invalid_filter(pf, filter);
9169         }
9170 }
9171
9172 #define I40E_MIN_FD_FLUSH_INTERVAL 10
9173 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
9174 /**
9175  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
9176  * @pf: board private structure
9177  **/
9178 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
9179 {
9180         unsigned long min_flush_time;
9181         int flush_wait_retry = 50;
9182         bool disable_atr = false;
9183         int fd_room;
9184         int reg;
9185
9186         if (!time_after(jiffies, pf->fd_flush_timestamp +
9187                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
9188                 return;
9189
9190         /* If the flush is happening too quick and we have mostly SB rules we
9191          * should not re-enable ATR for some time.
9192          */
9193         min_flush_time = pf->fd_flush_timestamp +
9194                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
9195         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
9196
9197         if (!(time_after(jiffies, min_flush_time)) &&
9198             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
9199                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
9200                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
9201                 disable_atr = true;
9202         }
9203
9204         pf->fd_flush_timestamp = jiffies;
9205         set_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
9206         /* flush all filters */
9207         wr32(&pf->hw, I40E_PFQF_CTL_1,
9208              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
9209         i40e_flush(&pf->hw);
9210         pf->fd_flush_cnt++;
9211         pf->fd_add_err = 0;
9212         do {
9213                 /* Check FD flush status every 5-6msec */
9214                 usleep_range(5000, 6000);
9215                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
9216                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
9217                         break;
9218         } while (flush_wait_retry--);
9219         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
9220                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
9221         } else {
9222                 /* replay sideband filters */
9223                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
9224                 if (!disable_atr && !pf->fd_tcp4_filter_cnt)
9225                         clear_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
9226                 clear_bit(__I40E_FD_FLUSH_REQUESTED, pf->state);
9227                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
9228                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
9229         }
9230 }
9231
9232 /**
9233  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
9234  * @pf: board private structure
9235  **/
9236 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
9237 {
9238         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
9239 }
9240
9241 /**
9242  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
9243  * @pf: board private structure
9244  **/
9245 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
9246 {
9247
9248         /* if interface is down do nothing */
9249         if (test_bit(__I40E_DOWN, pf->state))
9250                 return;
9251
9252         if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
9253                 i40e_fdir_flush_and_replay(pf);
9254
9255         i40e_fdir_check_and_reenable(pf);
9256
9257 }
9258
9259 /**
9260  * i40e_vsi_link_event - notify VSI of a link event
9261  * @vsi: vsi to be notified
9262  * @link_up: link up or down
9263  **/
9264 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
9265 {
9266         if (!vsi || test_bit(__I40E_VSI_DOWN, vsi->state))
9267                 return;
9268
9269         switch (vsi->type) {
9270         case I40E_VSI_MAIN:
9271                 if (!vsi->netdev || !vsi->netdev_registered)
9272                         break;
9273
9274                 if (link_up) {
9275                         netif_carrier_on(vsi->netdev);
9276                         netif_tx_wake_all_queues(vsi->netdev);
9277                 } else {
9278                         netif_carrier_off(vsi->netdev);
9279                         netif_tx_stop_all_queues(vsi->netdev);
9280                 }
9281                 break;
9282
9283         case I40E_VSI_SRIOV:
9284         case I40E_VSI_VMDQ2:
9285         case I40E_VSI_CTRL:
9286         case I40E_VSI_IWARP:
9287         case I40E_VSI_MIRROR:
9288         default:
9289                 /* there is no notification for other VSIs */
9290                 break;
9291         }
9292 }
9293
9294 /**
9295  * i40e_veb_link_event - notify elements on the veb of a link event
9296  * @veb: veb to be notified
9297  * @link_up: link up or down
9298  **/
9299 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
9300 {
9301         struct i40e_pf *pf;
9302         int i;
9303
9304         if (!veb || !veb->pf)
9305                 return;
9306         pf = veb->pf;
9307
9308         /* depth first... */
9309         for (i = 0; i < I40E_MAX_VEB; i++)
9310                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
9311                         i40e_veb_link_event(pf->veb[i], link_up);
9312
9313         /* ... now the local VSIs */
9314         for (i = 0; i < pf->num_alloc_vsi; i++)
9315                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
9316                         i40e_vsi_link_event(pf->vsi[i], link_up);
9317 }
9318
9319 /**
9320  * i40e_link_event - Update netif_carrier status
9321  * @pf: board private structure
9322  **/
9323 static void i40e_link_event(struct i40e_pf *pf)
9324 {
9325         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
9326         u8 new_link_speed, old_link_speed;
9327         i40e_status status;
9328         bool new_link, old_link;
9329
9330         /* set this to force the get_link_status call to refresh state */
9331         pf->hw.phy.get_link_info = true;
9332         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
9333         status = i40e_get_link_status(&pf->hw, &new_link);
9334
9335         /* On success, disable temp link polling */
9336         if (status == I40E_SUCCESS) {
9337                 clear_bit(__I40E_TEMP_LINK_POLLING, pf->state);
9338         } else {
9339                 /* Enable link polling temporarily until i40e_get_link_status
9340                  * returns I40E_SUCCESS
9341                  */
9342                 set_bit(__I40E_TEMP_LINK_POLLING, pf->state);
9343                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
9344                         status);
9345                 return;
9346         }
9347
9348         old_link_speed = pf->hw.phy.link_info_old.link_speed;
9349         new_link_speed = pf->hw.phy.link_info.link_speed;
9350
9351         if (new_link == old_link &&
9352             new_link_speed == old_link_speed &&
9353             (test_bit(__I40E_VSI_DOWN, vsi->state) ||
9354              new_link == netif_carrier_ok(vsi->netdev)))
9355                 return;
9356
9357         i40e_print_link_message(vsi, new_link);
9358
9359         /* Notify the base of the switch tree connected to
9360          * the link.  Floating VEBs are not notified.
9361          */
9362         if (pf->lan_veb < I40E_MAX_VEB && pf->veb[pf->lan_veb])
9363                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
9364         else
9365                 i40e_vsi_link_event(vsi, new_link);
9366
9367         if (pf->vf)
9368                 i40e_vc_notify_link_state(pf);
9369
9370         if (pf->flags & I40E_FLAG_PTP)
9371                 i40e_ptp_set_increment(pf);
9372 }
9373
9374 /**
9375  * i40e_watchdog_subtask - periodic checks not using event driven response
9376  * @pf: board private structure
9377  **/
9378 static void i40e_watchdog_subtask(struct i40e_pf *pf)
9379 {
9380         int i;
9381
9382         /* if interface is down do nothing */
9383         if (test_bit(__I40E_DOWN, pf->state) ||
9384             test_bit(__I40E_CONFIG_BUSY, pf->state))
9385                 return;
9386
9387         /* make sure we don't do these things too often */
9388         if (time_before(jiffies, (pf->service_timer_previous +
9389                                   pf->service_timer_period)))
9390                 return;
9391         pf->service_timer_previous = jiffies;
9392
9393         if ((pf->flags & I40E_FLAG_LINK_POLLING_ENABLED) ||
9394             test_bit(__I40E_TEMP_LINK_POLLING, pf->state))
9395                 i40e_link_event(pf);
9396
9397         /* Update the stats for active netdevs so the network stack
9398          * can look at updated numbers whenever it cares to
9399          */
9400         for (i = 0; i < pf->num_alloc_vsi; i++)
9401                 if (pf->vsi[i] && pf->vsi[i]->netdev)
9402                         i40e_update_stats(pf->vsi[i]);
9403
9404         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
9405                 /* Update the stats for the active switching components */
9406                 for (i = 0; i < I40E_MAX_VEB; i++)
9407                         if (pf->veb[i])
9408                                 i40e_update_veb_stats(pf->veb[i]);
9409         }
9410
9411         i40e_ptp_rx_hang(pf);
9412         i40e_ptp_tx_hang(pf);
9413 }
9414
9415 /**
9416  * i40e_reset_subtask - Set up for resetting the device and driver
9417  * @pf: board private structure
9418  **/
9419 static void i40e_reset_subtask(struct i40e_pf *pf)
9420 {
9421         u32 reset_flags = 0;
9422
9423         if (test_bit(__I40E_REINIT_REQUESTED, pf->state)) {
9424                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
9425                 clear_bit(__I40E_REINIT_REQUESTED, pf->state);
9426         }
9427         if (test_bit(__I40E_PF_RESET_REQUESTED, pf->state)) {
9428                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
9429                 clear_bit(__I40E_PF_RESET_REQUESTED, pf->state);
9430         }
9431         if (test_bit(__I40E_CORE_RESET_REQUESTED, pf->state)) {
9432                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
9433                 clear_bit(__I40E_CORE_RESET_REQUESTED, pf->state);
9434         }
9435         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state)) {
9436                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
9437                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state);
9438         }
9439         if (test_bit(__I40E_DOWN_REQUESTED, pf->state)) {
9440                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
9441                 clear_bit(__I40E_DOWN_REQUESTED, pf->state);
9442         }
9443
9444         /* If there's a recovery already waiting, it takes
9445          * precedence before starting a new reset sequence.
9446          */
9447         if (test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) {
9448                 i40e_prep_for_reset(pf, false);
9449                 i40e_reset(pf);
9450                 i40e_rebuild(pf, false, false);
9451         }
9452
9453         /* If we're already down or resetting, just bail */
9454         if (reset_flags &&
9455             !test_bit(__I40E_DOWN, pf->state) &&
9456             !test_bit(__I40E_CONFIG_BUSY, pf->state)) {
9457                 i40e_do_reset(pf, reset_flags, false);
9458         }
9459 }
9460
9461 /**
9462  * i40e_handle_link_event - Handle link event
9463  * @pf: board private structure
9464  * @e: event info posted on ARQ
9465  **/
9466 static void i40e_handle_link_event(struct i40e_pf *pf,
9467                                    struct i40e_arq_event_info *e)
9468 {
9469         struct i40e_aqc_get_link_status *status =
9470                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
9471
9472         /* Do a new status request to re-enable LSE reporting
9473          * and load new status information into the hw struct
9474          * This completely ignores any state information
9475          * in the ARQ event info, instead choosing to always
9476          * issue the AQ update link status command.
9477          */
9478         i40e_link_event(pf);
9479
9480         /* Check if module meets thermal requirements */
9481         if (status->phy_type == I40E_PHY_TYPE_NOT_SUPPORTED_HIGH_TEMP) {
9482                 dev_err(&pf->pdev->dev,
9483                         "Rx/Tx is disabled on this device because the module does not meet thermal requirements.\n");
9484                 dev_err(&pf->pdev->dev,
9485                         "Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n");
9486         } else {
9487                 /* check for unqualified module, if link is down, suppress
9488                  * the message if link was forced to be down.
9489                  */
9490                 if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
9491                     (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
9492                     (!(status->link_info & I40E_AQ_LINK_UP)) &&
9493                     (!(pf->flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED))) {
9494                         dev_err(&pf->pdev->dev,
9495                                 "Rx/Tx is disabled on this device because an unsupported SFP module type was detected.\n");
9496                         dev_err(&pf->pdev->dev,
9497                                 "Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n");
9498                 }
9499         }
9500 }
9501
9502 /**
9503  * i40e_clean_adminq_subtask - Clean the AdminQ rings
9504  * @pf: board private structure
9505  **/
9506 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
9507 {
9508         struct i40e_arq_event_info event;
9509         struct i40e_hw *hw = &pf->hw;
9510         u16 pending, i = 0;
9511         i40e_status ret;
9512         u16 opcode;
9513         u32 oldval;
9514         u32 val;
9515
9516         /* Do not run clean AQ when PF reset fails */
9517         if (test_bit(__I40E_RESET_FAILED, pf->state))
9518                 return;
9519
9520         /* check for error indications */
9521         val = rd32(&pf->hw, pf->hw.aq.arq.len);
9522         oldval = val;
9523         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
9524                 if (hw->debug_mask & I40E_DEBUG_AQ)
9525                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
9526                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
9527         }
9528         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
9529                 if (hw->debug_mask & I40E_DEBUG_AQ)
9530                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
9531                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
9532                 pf->arq_overflows++;
9533         }
9534         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
9535                 if (hw->debug_mask & I40E_DEBUG_AQ)
9536                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
9537                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
9538         }
9539         if (oldval != val)
9540                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
9541
9542         val = rd32(&pf->hw, pf->hw.aq.asq.len);
9543         oldval = val;
9544         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
9545                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
9546                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
9547                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
9548         }
9549         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
9550                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
9551                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
9552                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
9553         }
9554         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
9555                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
9556                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
9557                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
9558         }
9559         if (oldval != val)
9560                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
9561
9562         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
9563         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
9564         if (!event.msg_buf)
9565                 return;
9566
9567         do {
9568                 ret = i40e_clean_arq_element(hw, &event, &pending);
9569                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
9570                         break;
9571                 else if (ret) {
9572                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
9573                         break;
9574                 }
9575
9576                 opcode = le16_to_cpu(event.desc.opcode);
9577                 switch (opcode) {
9578
9579                 case i40e_aqc_opc_get_link_status:
9580                         i40e_handle_link_event(pf, &event);
9581                         break;
9582                 case i40e_aqc_opc_send_msg_to_pf:
9583                         ret = i40e_vc_process_vf_msg(pf,
9584                                         le16_to_cpu(event.desc.retval),
9585                                         le32_to_cpu(event.desc.cookie_high),
9586                                         le32_to_cpu(event.desc.cookie_low),
9587                                         event.msg_buf,
9588                                         event.msg_len);
9589                         break;
9590                 case i40e_aqc_opc_lldp_update_mib:
9591                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
9592 #ifdef CONFIG_I40E_DCB
9593                         rtnl_lock();
9594                         ret = i40e_handle_lldp_event(pf, &event);
9595                         rtnl_unlock();
9596 #endif /* CONFIG_I40E_DCB */
9597                         break;
9598                 case i40e_aqc_opc_event_lan_overflow:
9599                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
9600                         i40e_handle_lan_overflow_event(pf, &event);
9601                         break;
9602                 case i40e_aqc_opc_send_msg_to_peer:
9603                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
9604                         break;
9605                 case i40e_aqc_opc_nvm_erase:
9606                 case i40e_aqc_opc_nvm_update:
9607                 case i40e_aqc_opc_oem_post_update:
9608                         i40e_debug(&pf->hw, I40E_DEBUG_NVM,
9609                                    "ARQ NVM operation 0x%04x completed\n",
9610                                    opcode);
9611                         break;
9612                 default:
9613                         dev_info(&pf->pdev->dev,
9614                                  "ARQ: Unknown event 0x%04x ignored\n",
9615                                  opcode);
9616                         break;
9617                 }
9618         } while (i++ < pf->adminq_work_limit);
9619
9620         if (i < pf->adminq_work_limit)
9621                 clear_bit(__I40E_ADMINQ_EVENT_PENDING, pf->state);
9622
9623         /* re-enable Admin queue interrupt cause */
9624         val = rd32(hw, I40E_PFINT_ICR0_ENA);
9625         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
9626         wr32(hw, I40E_PFINT_ICR0_ENA, val);
9627         i40e_flush(hw);
9628
9629         kfree(event.msg_buf);
9630 }
9631
9632 /**
9633  * i40e_verify_eeprom - make sure eeprom is good to use
9634  * @pf: board private structure
9635  **/
9636 static void i40e_verify_eeprom(struct i40e_pf *pf)
9637 {
9638         int err;
9639
9640         err = i40e_diag_eeprom_test(&pf->hw);
9641         if (err) {
9642                 /* retry in case of garbage read */
9643                 err = i40e_diag_eeprom_test(&pf->hw);
9644                 if (err) {
9645                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
9646                                  err);
9647                         set_bit(__I40E_BAD_EEPROM, pf->state);
9648                 }
9649         }
9650
9651         if (!err && test_bit(__I40E_BAD_EEPROM, pf->state)) {
9652                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
9653                 clear_bit(__I40E_BAD_EEPROM, pf->state);
9654         }
9655 }
9656
9657 /**
9658  * i40e_enable_pf_switch_lb
9659  * @pf: pointer to the PF structure
9660  *
9661  * enable switch loop back or die - no point in a return value
9662  **/
9663 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
9664 {
9665         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
9666         struct i40e_vsi_context ctxt;
9667         int ret;
9668
9669         ctxt.seid = pf->main_vsi_seid;
9670         ctxt.pf_num = pf->hw.pf_id;
9671         ctxt.vf_num = 0;
9672         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9673         if (ret) {
9674                 dev_info(&pf->pdev->dev,
9675                          "couldn't get PF vsi config, err %s aq_err %s\n",
9676                          i40e_stat_str(&pf->hw, ret),
9677                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9678                 return;
9679         }
9680         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9681         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9682         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9683
9684         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
9685         if (ret) {
9686                 dev_info(&pf->pdev->dev,
9687                          "update vsi switch failed, err %s aq_err %s\n",
9688                          i40e_stat_str(&pf->hw, ret),
9689                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9690         }
9691 }
9692
9693 /**
9694  * i40e_disable_pf_switch_lb
9695  * @pf: pointer to the PF structure
9696  *
9697  * disable switch loop back or die - no point in a return value
9698  **/
9699 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
9700 {
9701         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
9702         struct i40e_vsi_context ctxt;
9703         int ret;
9704
9705         ctxt.seid = pf->main_vsi_seid;
9706         ctxt.pf_num = pf->hw.pf_id;
9707         ctxt.vf_num = 0;
9708         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9709         if (ret) {
9710                 dev_info(&pf->pdev->dev,
9711                          "couldn't get PF vsi config, err %s aq_err %s\n",
9712                          i40e_stat_str(&pf->hw, ret),
9713                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9714                 return;
9715         }
9716         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9717         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9718         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9719
9720         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
9721         if (ret) {
9722                 dev_info(&pf->pdev->dev,
9723                          "update vsi switch failed, err %s aq_err %s\n",
9724                          i40e_stat_str(&pf->hw, ret),
9725                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9726         }
9727 }
9728
9729 /**
9730  * i40e_config_bridge_mode - Configure the HW bridge mode
9731  * @veb: pointer to the bridge instance
9732  *
9733  * Configure the loop back mode for the LAN VSI that is downlink to the
9734  * specified HW bridge instance. It is expected this function is called
9735  * when a new HW bridge is instantiated.
9736  **/
9737 static void i40e_config_bridge_mode(struct i40e_veb *veb)
9738 {
9739         struct i40e_pf *pf = veb->pf;
9740
9741         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
9742                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
9743                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
9744         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
9745                 i40e_disable_pf_switch_lb(pf);
9746         else
9747                 i40e_enable_pf_switch_lb(pf);
9748 }
9749
9750 /**
9751  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
9752  * @veb: pointer to the VEB instance
9753  *
9754  * This is a recursive function that first builds the attached VSIs then
9755  * recurses in to build the next layer of VEB.  We track the connections
9756  * through our own index numbers because the seid's from the HW could
9757  * change across the reset.
9758  **/
9759 static int i40e_reconstitute_veb(struct i40e_veb *veb)
9760 {
9761         struct i40e_vsi *ctl_vsi = NULL;
9762         struct i40e_pf *pf = veb->pf;
9763         int v, veb_idx;
9764         int ret;
9765
9766         /* build VSI that owns this VEB, temporarily attached to base VEB */
9767         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
9768                 if (pf->vsi[v] &&
9769                     pf->vsi[v]->veb_idx == veb->idx &&
9770                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
9771                         ctl_vsi = pf->vsi[v];
9772                         break;
9773                 }
9774         }
9775         if (!ctl_vsi) {
9776                 dev_info(&pf->pdev->dev,
9777                          "missing owner VSI for veb_idx %d\n", veb->idx);
9778                 ret = -ENOENT;
9779                 goto end_reconstitute;
9780         }
9781         if (ctl_vsi != pf->vsi[pf->lan_vsi])
9782                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9783         ret = i40e_add_vsi(ctl_vsi);
9784         if (ret) {
9785                 dev_info(&pf->pdev->dev,
9786                          "rebuild of veb_idx %d owner VSI failed: %d\n",
9787                          veb->idx, ret);
9788                 goto end_reconstitute;
9789         }
9790         i40e_vsi_reset_stats(ctl_vsi);
9791
9792         /* create the VEB in the switch and move the VSI onto the VEB */
9793         ret = i40e_add_veb(veb, ctl_vsi);
9794         if (ret)
9795                 goto end_reconstitute;
9796
9797         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
9798                 veb->bridge_mode = BRIDGE_MODE_VEB;
9799         else
9800                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9801         i40e_config_bridge_mode(veb);
9802
9803         /* create the remaining VSIs attached to this VEB */
9804         for (v = 0; v < pf->num_alloc_vsi; v++) {
9805                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
9806                         continue;
9807
9808                 if (pf->vsi[v]->veb_idx == veb->idx) {
9809                         struct i40e_vsi *vsi = pf->vsi[v];
9810
9811                         vsi->uplink_seid = veb->seid;
9812                         ret = i40e_add_vsi(vsi);
9813                         if (ret) {
9814                                 dev_info(&pf->pdev->dev,
9815                                          "rebuild of vsi_idx %d failed: %d\n",
9816                                          v, ret);
9817                                 goto end_reconstitute;
9818                         }
9819                         i40e_vsi_reset_stats(vsi);
9820                 }
9821         }
9822
9823         /* create any VEBs attached to this VEB - RECURSION */
9824         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9825                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
9826                         pf->veb[veb_idx]->uplink_seid = veb->seid;
9827                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
9828                         if (ret)
9829                                 break;
9830                 }
9831         }
9832
9833 end_reconstitute:
9834         return ret;
9835 }
9836
9837 /**
9838  * i40e_get_capabilities - get info about the HW
9839  * @pf: the PF struct
9840  * @list_type: AQ capability to be queried
9841  **/
9842 static int i40e_get_capabilities(struct i40e_pf *pf,
9843                                  enum i40e_admin_queue_opc list_type)
9844 {
9845         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
9846         u16 data_size;
9847         int buf_len;
9848         int err;
9849
9850         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
9851         do {
9852                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
9853                 if (!cap_buf)
9854                         return -ENOMEM;
9855
9856                 /* this loads the data into the hw struct for us */
9857                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
9858                                                     &data_size, list_type,
9859                                                     NULL);
9860                 /* data loaded, buffer no longer needed */
9861                 kfree(cap_buf);
9862
9863                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
9864                         /* retry with a larger buffer */
9865                         buf_len = data_size;
9866                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK || err) {
9867                         dev_info(&pf->pdev->dev,
9868                                  "capability discovery failed, err %s aq_err %s\n",
9869                                  i40e_stat_str(&pf->hw, err),
9870                                  i40e_aq_str(&pf->hw,
9871                                              pf->hw.aq.asq_last_status));
9872                         return -ENODEV;
9873                 }
9874         } while (err);
9875
9876         if (pf->hw.debug_mask & I40E_DEBUG_USER) {
9877                 if (list_type == i40e_aqc_opc_list_func_capabilities) {
9878                         dev_info(&pf->pdev->dev,
9879                                  "pf=%d, num_vfs=%d, msix_pf=%d, msix_vf=%d, fd_g=%d, fd_b=%d, pf_max_q=%d num_vsi=%d\n",
9880                                  pf->hw.pf_id, pf->hw.func_caps.num_vfs,
9881                                  pf->hw.func_caps.num_msix_vectors,
9882                                  pf->hw.func_caps.num_msix_vectors_vf,
9883                                  pf->hw.func_caps.fd_filters_guaranteed,
9884                                  pf->hw.func_caps.fd_filters_best_effort,
9885                                  pf->hw.func_caps.num_tx_qp,
9886                                  pf->hw.func_caps.num_vsis);
9887                 } else if (list_type == i40e_aqc_opc_list_dev_capabilities) {
9888                         dev_info(&pf->pdev->dev,
9889                                  "switch_mode=0x%04x, function_valid=0x%08x\n",
9890                                  pf->hw.dev_caps.switch_mode,
9891                                  pf->hw.dev_caps.valid_functions);
9892                         dev_info(&pf->pdev->dev,
9893                                  "SR-IOV=%d, num_vfs for all function=%u\n",
9894                                  pf->hw.dev_caps.sr_iov_1_1,
9895                                  pf->hw.dev_caps.num_vfs);
9896                         dev_info(&pf->pdev->dev,
9897                                  "num_vsis=%u, num_rx:%u, num_tx=%u\n",
9898                                  pf->hw.dev_caps.num_vsis,
9899                                  pf->hw.dev_caps.num_rx_qp,
9900                                  pf->hw.dev_caps.num_tx_qp);
9901                 }
9902         }
9903         if (list_type == i40e_aqc_opc_list_func_capabilities) {
9904 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
9905                        + pf->hw.func_caps.num_vfs)
9906                 if (pf->hw.revision_id == 0 &&
9907                     pf->hw.func_caps.num_vsis < DEF_NUM_VSI) {
9908                         dev_info(&pf->pdev->dev,
9909                                  "got num_vsis %d, setting num_vsis to %d\n",
9910                                  pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
9911                         pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
9912                 }
9913         }
9914         return 0;
9915 }
9916
9917 static int i40e_vsi_clear(struct i40e_vsi *vsi);
9918
9919 /**
9920  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
9921  * @pf: board private structure
9922  **/
9923 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
9924 {
9925         struct i40e_vsi *vsi;
9926
9927         /* quick workaround for an NVM issue that leaves a critical register
9928          * uninitialized
9929          */
9930         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
9931                 static const u32 hkey[] = {
9932                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
9933                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
9934                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
9935                         0x95b3a76d};
9936                 int i;
9937
9938                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
9939                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
9940         }
9941
9942         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
9943                 return;
9944
9945         /* find existing VSI and see if it needs configuring */
9946         vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);
9947
9948         /* create a new VSI if none exists */
9949         if (!vsi) {
9950                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
9951                                      pf->vsi[pf->lan_vsi]->seid, 0);
9952                 if (!vsi) {
9953                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
9954                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9955                         pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
9956                         return;
9957                 }
9958         }
9959
9960         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
9961 }
9962
9963 /**
9964  * i40e_fdir_teardown - release the Flow Director resources
9965  * @pf: board private structure
9966  **/
9967 static void i40e_fdir_teardown(struct i40e_pf *pf)
9968 {
9969         struct i40e_vsi *vsi;
9970
9971         i40e_fdir_filter_exit(pf);
9972         vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);
9973         if (vsi)
9974                 i40e_vsi_release(vsi);
9975 }
9976
9977 /**
9978  * i40e_rebuild_cloud_filters - Rebuilds cloud filters for VSIs
9979  * @vsi: PF main vsi
9980  * @seid: seid of main or channel VSIs
9981  *
9982  * Rebuilds cloud filters associated with main VSI and channel VSIs if they
9983  * existed before reset
9984  **/
9985 static int i40e_rebuild_cloud_filters(struct i40e_vsi *vsi, u16 seid)
9986 {
9987         struct i40e_cloud_filter *cfilter;
9988         struct i40e_pf *pf = vsi->back;
9989         struct hlist_node *node;
9990         i40e_status ret;
9991
9992         /* Add cloud filters back if they exist */
9993         hlist_for_each_entry_safe(cfilter, node, &pf->cloud_filter_list,
9994                                   cloud_node) {
9995                 if (cfilter->seid != seid)
9996                         continue;
9997
9998                 if (cfilter->dst_port)
9999                         ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
10000                                                                 true);
10001                 else
10002                         ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
10003
10004                 if (ret) {
10005                         dev_dbg(&pf->pdev->dev,
10006                                 "Failed to rebuild cloud filter, err %s aq_err %s\n",
10007                                 i40e_stat_str(&pf->hw, ret),
10008                                 i40e_aq_str(&pf->hw,
10009                                             pf->hw.aq.asq_last_status));
10010                         return ret;
10011                 }
10012         }
10013         return 0;
10014 }
10015
10016 /**
10017  * i40e_rebuild_channels - Rebuilds channel VSIs if they existed before reset
10018  * @vsi: PF main vsi
10019  *
10020  * Rebuilds channel VSIs if they existed before reset
10021  **/
10022 static int i40e_rebuild_channels(struct i40e_vsi *vsi)
10023 {
10024         struct i40e_channel *ch, *ch_tmp;
10025         i40e_status ret;
10026
10027         if (list_empty(&vsi->ch_list))
10028                 return 0;
10029
10030         list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
10031                 if (!ch->initialized)
10032                         break;
10033                 /* Proceed with creation of channel (VMDq2) VSI */
10034                 ret = i40e_add_channel(vsi->back, vsi->uplink_seid, ch);
10035                 if (ret) {
10036                         dev_info(&vsi->back->pdev->dev,
10037                                  "failed to rebuild channels using uplink_seid %u\n",
10038                                  vsi->uplink_seid);
10039                         return ret;
10040                 }
10041                 /* Reconfigure TX queues using QTX_CTL register */
10042                 ret = i40e_channel_config_tx_ring(vsi->back, vsi, ch);
10043                 if (ret) {
10044                         dev_info(&vsi->back->pdev->dev,
10045                                  "failed to configure TX rings for channel %u\n",
10046                                  ch->seid);
10047                         return ret;
10048                 }
10049                 /* update 'next_base_queue' */
10050                 vsi->next_base_queue = vsi->next_base_queue +
10051                                                         ch->num_queue_pairs;
10052                 if (ch->max_tx_rate) {
10053                         u64 credits = ch->max_tx_rate;
10054
10055                         if (i40e_set_bw_limit(vsi, ch->seid,
10056                                               ch->max_tx_rate))
10057                                 return -EINVAL;
10058
10059                         do_div(credits, I40E_BW_CREDIT_DIVISOR);
10060                         dev_dbg(&vsi->back->pdev->dev,
10061                                 "Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
10062                                 ch->max_tx_rate,
10063                                 credits,
10064                                 ch->seid);
10065                 }
10066                 ret = i40e_rebuild_cloud_filters(vsi, ch->seid);
10067                 if (ret) {
10068                         dev_dbg(&vsi->back->pdev->dev,
10069                                 "Failed to rebuild cloud filters for channel VSI %u\n",
10070                                 ch->seid);
10071                         return ret;
10072                 }
10073         }
10074         return 0;
10075 }
10076
10077 /**
10078  * i40e_clean_xps_state - clean xps state for every tx_ring
10079  * @vsi: ptr to the VSI
10080  **/
10081 static void i40e_clean_xps_state(struct i40e_vsi *vsi)
10082 {
10083         int i;
10084
10085         if (vsi->tx_rings)
10086                 for (i = 0; i < vsi->num_queue_pairs; i++)
10087                         if (vsi->tx_rings[i])
10088                                 clear_bit(__I40E_TX_XPS_INIT_DONE,
10089                                           vsi->tx_rings[i]->state);
10090 }
10091
10092 /**
10093  * i40e_prep_for_reset - prep for the core to reset
10094  * @pf: board private structure
10095  * @lock_acquired: indicates whether or not the lock has been acquired
10096  * before this function was called.
10097  *
10098  * Close up the VFs and other things in prep for PF Reset.
10099   **/
10100 static void i40e_prep_for_reset(struct i40e_pf *pf, bool lock_acquired)
10101 {
10102         struct i40e_hw *hw = &pf->hw;
10103         i40e_status ret = 0;
10104         u32 v;
10105
10106         clear_bit(__I40E_RESET_INTR_RECEIVED, pf->state);
10107         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
10108                 return;
10109         if (i40e_check_asq_alive(&pf->hw))
10110                 i40e_vc_notify_reset(pf);
10111
10112         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
10113
10114         /* quiesce the VSIs and their queues that are not already DOWN */
10115         /* pf_quiesce_all_vsi modifies netdev structures -rtnl_lock needed */
10116         if (!lock_acquired)
10117                 rtnl_lock();
10118         i40e_pf_quiesce_all_vsi(pf);
10119         if (!lock_acquired)
10120                 rtnl_unlock();
10121
10122         for (v = 0; v < pf->num_alloc_vsi; v++) {
10123                 if (pf->vsi[v]) {
10124                         i40e_clean_xps_state(pf->vsi[v]);
10125                         pf->vsi[v]->seid = 0;
10126                 }
10127         }
10128
10129         i40e_shutdown_adminq(&pf->hw);
10130
10131         /* call shutdown HMC */
10132         if (hw->hmc.hmc_obj) {
10133                 ret = i40e_shutdown_lan_hmc(hw);
10134                 if (ret)
10135                         dev_warn(&pf->pdev->dev,
10136                                  "shutdown_lan_hmc failed: %d\n", ret);
10137         }
10138
10139         /* Save the current PTP time so that we can restore the time after the
10140          * reset completes.
10141          */
10142         i40e_ptp_save_hw_time(pf);
10143 }
10144
10145 /**
10146  * i40e_send_version - update firmware with driver version
10147  * @pf: PF struct
10148  */
10149 static void i40e_send_version(struct i40e_pf *pf)
10150 {
10151         struct i40e_driver_version dv;
10152
10153         dv.major_version = 0xff;
10154         dv.minor_version = 0xff;
10155         dv.build_version = 0xff;
10156         dv.subbuild_version = 0;
10157         strlcpy(dv.driver_string, UTS_RELEASE, sizeof(dv.driver_string));
10158         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
10159 }
10160
10161 /**
10162  * i40e_get_oem_version - get OEM specific version information
10163  * @hw: pointer to the hardware structure
10164  **/
10165 static void i40e_get_oem_version(struct i40e_hw *hw)
10166 {
10167         u16 block_offset = 0xffff;
10168         u16 block_length = 0;
10169         u16 capabilities = 0;
10170         u16 gen_snap = 0;
10171         u16 release = 0;
10172
10173 #define I40E_SR_NVM_OEM_VERSION_PTR             0x1B
10174 #define I40E_NVM_OEM_LENGTH_OFFSET              0x00
10175 #define I40E_NVM_OEM_CAPABILITIES_OFFSET        0x01
10176 #define I40E_NVM_OEM_GEN_OFFSET                 0x02
10177 #define I40E_NVM_OEM_RELEASE_OFFSET             0x03
10178 #define I40E_NVM_OEM_CAPABILITIES_MASK          0x000F
10179 #define I40E_NVM_OEM_LENGTH                     3
10180
10181         /* Check if pointer to OEM version block is valid. */
10182         i40e_read_nvm_word(hw, I40E_SR_NVM_OEM_VERSION_PTR, &block_offset);
10183         if (block_offset == 0xffff)
10184                 return;
10185
10186         /* Check if OEM version block has correct length. */
10187         i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_LENGTH_OFFSET,
10188                            &block_length);
10189         if (block_length < I40E_NVM_OEM_LENGTH)
10190                 return;
10191
10192         /* Check if OEM version format is as expected. */
10193         i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_CAPABILITIES_OFFSET,
10194                            &capabilities);
10195         if ((capabilities & I40E_NVM_OEM_CAPABILITIES_MASK) != 0)
10196                 return;
10197
10198         i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_GEN_OFFSET,
10199                            &gen_snap);
10200         i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_RELEASE_OFFSET,
10201                            &release);
10202         hw->nvm.oem_ver = (gen_snap << I40E_OEM_SNAP_SHIFT) | release;
10203         hw->nvm.eetrack = I40E_OEM_EETRACK_ID;
10204 }
10205
10206 /**
10207  * i40e_reset - wait for core reset to finish reset, reset pf if corer not seen
10208  * @pf: board private structure
10209  **/
10210 static int i40e_reset(struct i40e_pf *pf)
10211 {
10212         struct i40e_hw *hw = &pf->hw;
10213         i40e_status ret;
10214
10215         ret = i40e_pf_reset(hw);
10216         if (ret) {
10217                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
10218                 set_bit(__I40E_RESET_FAILED, pf->state);
10219                 clear_bit(__I40E_RESET_RECOVERY_PENDING, pf->state);
10220         } else {
10221                 pf->pfr_count++;
10222         }
10223         return ret;
10224 }
10225
10226 /**
10227  * i40e_rebuild - rebuild using a saved config
10228  * @pf: board private structure
10229  * @reinit: if the Main VSI needs to re-initialized.
10230  * @lock_acquired: indicates whether or not the lock has been acquired
10231  * before this function was called.
10232  **/
10233 static void i40e_rebuild(struct i40e_pf *pf, bool reinit, bool lock_acquired)
10234 {
10235         const bool is_recovery_mode_reported = i40e_check_recovery_mode(pf);
10236         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
10237         struct i40e_hw *hw = &pf->hw;
10238         i40e_status ret;
10239         u32 val;
10240         int v;
10241
10242         if (test_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state) &&
10243             is_recovery_mode_reported)
10244                 i40e_set_ethtool_ops(pf->vsi[pf->lan_vsi]->netdev);
10245
10246         if (test_bit(__I40E_DOWN, pf->state) &&
10247             !test_bit(__I40E_RECOVERY_MODE, pf->state))
10248                 goto clear_recovery;
10249         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
10250
10251         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
10252         ret = i40e_init_adminq(&pf->hw);
10253         if (ret) {
10254                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
10255                          i40e_stat_str(&pf->hw, ret),
10256                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10257                 goto clear_recovery;
10258         }
10259         i40e_get_oem_version(&pf->hw);
10260
10261         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state)) {
10262                 /* The following delay is necessary for firmware update. */
10263                 mdelay(1000);
10264         }
10265
10266         /* re-verify the eeprom if we just had an EMP reset */
10267         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state))
10268                 i40e_verify_eeprom(pf);
10269
10270         /* if we are going out of or into recovery mode we have to act
10271          * accordingly with regard to resources initialization
10272          * and deinitialization
10273          */
10274         if (test_bit(__I40E_RECOVERY_MODE, pf->state)) {
10275                 if (i40e_get_capabilities(pf,
10276                                           i40e_aqc_opc_list_func_capabilities))
10277                         goto end_unlock;
10278
10279                 if (is_recovery_mode_reported) {
10280                         /* we're staying in recovery mode so we'll reinitialize
10281                          * misc vector here
10282                          */
10283                         if (i40e_setup_misc_vector_for_recovery_mode(pf))
10284                                 goto end_unlock;
10285                 } else {
10286                         if (!lock_acquired)
10287                                 rtnl_lock();
10288                         /* we're going out of recovery mode so we'll free
10289                          * the IRQ allocated specifically for recovery mode
10290                          * and restore the interrupt scheme
10291                          */
10292                         free_irq(pf->pdev->irq, pf);
10293                         i40e_clear_interrupt_scheme(pf);
10294                         if (i40e_restore_interrupt_scheme(pf))
10295                                 goto end_unlock;
10296                 }
10297
10298                 /* tell the firmware that we're starting */
10299                 i40e_send_version(pf);
10300
10301                 /* bail out in case recovery mode was detected, as there is
10302                  * no need for further configuration.
10303                  */
10304                 goto end_unlock;
10305         }
10306
10307         i40e_clear_pxe_mode(hw);
10308         ret = i40e_get_capabilities(pf, i40e_aqc_opc_list_func_capabilities);
10309         if (ret)
10310                 goto end_core_reset;
10311
10312         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10313                                 hw->func_caps.num_rx_qp, 0, 0);
10314         if (ret) {
10315                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
10316                 goto end_core_reset;
10317         }
10318         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10319         if (ret) {
10320                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
10321                 goto end_core_reset;
10322         }
10323
10324         /* Enable FW to write a default DCB config on link-up */
10325         i40e_aq_set_dcb_parameters(hw, true, NULL);
10326
10327 #ifdef CONFIG_I40E_DCB
10328         ret = i40e_init_pf_dcb(pf);
10329         if (ret) {
10330                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
10331                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10332                 /* Continue without DCB enabled */
10333         }
10334 #endif /* CONFIG_I40E_DCB */
10335         /* do basic switch setup */
10336         if (!lock_acquired)
10337                 rtnl_lock();
10338         ret = i40e_setup_pf_switch(pf, reinit, true);
10339         if (ret)
10340                 goto end_unlock;
10341
10342         /* The driver only wants link up/down and module qualification
10343          * reports from firmware.  Note the negative logic.
10344          */
10345         ret = i40e_aq_set_phy_int_mask(&pf->hw,
10346                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
10347                                          I40E_AQ_EVENT_MEDIA_NA |
10348                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
10349         if (ret)
10350                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10351                          i40e_stat_str(&pf->hw, ret),
10352                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10353
10354         /* Rebuild the VSIs and VEBs that existed before reset.
10355          * They are still in our local switch element arrays, so only
10356          * need to rebuild the switch model in the HW.
10357          *
10358          * If there were VEBs but the reconstitution failed, we'll try
10359          * try to recover minimal use by getting the basic PF VSI working.
10360          */
10361         if (vsi->uplink_seid != pf->mac_seid) {
10362                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
10363                 /* find the one VEB connected to the MAC, and find orphans */
10364                 for (v = 0; v < I40E_MAX_VEB; v++) {
10365                         if (!pf->veb[v])
10366                                 continue;
10367
10368                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
10369                             pf->veb[v]->uplink_seid == 0) {
10370                                 ret = i40e_reconstitute_veb(pf->veb[v]);
10371
10372                                 if (!ret)
10373                                         continue;
10374
10375                                 /* If Main VEB failed, we're in deep doodoo,
10376                                  * so give up rebuilding the switch and set up
10377                                  * for minimal rebuild of PF VSI.
10378                                  * If orphan failed, we'll report the error
10379                                  * but try to keep going.
10380                                  */
10381                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
10382                                         dev_info(&pf->pdev->dev,
10383                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
10384                                                  ret);
10385                                         vsi->uplink_seid = pf->mac_seid;
10386                                         break;
10387                                 } else if (pf->veb[v]->uplink_seid == 0) {
10388                                         dev_info(&pf->pdev->dev,
10389                                                  "rebuild of orphan VEB failed: %d\n",
10390                                                  ret);
10391                                 }
10392                         }
10393                 }
10394         }
10395
10396         if (vsi->uplink_seid == pf->mac_seid) {
10397                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
10398                 /* no VEB, so rebuild only the Main VSI */
10399                 ret = i40e_add_vsi(vsi);
10400                 if (ret) {
10401                         dev_info(&pf->pdev->dev,
10402                                  "rebuild of Main VSI failed: %d\n", ret);
10403                         goto end_unlock;
10404                 }
10405         }
10406
10407         if (vsi->mqprio_qopt.max_rate[0]) {
10408                 u64 max_tx_rate = i40e_bw_bytes_to_mbits(vsi,
10409                                                   vsi->mqprio_qopt.max_rate[0]);
10410                 u64 credits = 0;
10411
10412                 ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
10413                 if (ret)
10414                         goto end_unlock;
10415
10416                 credits = max_tx_rate;
10417                 do_div(credits, I40E_BW_CREDIT_DIVISOR);
10418                 dev_dbg(&vsi->back->pdev->dev,
10419                         "Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
10420                         max_tx_rate,
10421                         credits,
10422                         vsi->seid);
10423         }
10424
10425         ret = i40e_rebuild_cloud_filters(vsi, vsi->seid);
10426         if (ret)
10427                 goto end_unlock;
10428
10429         /* PF Main VSI is rebuild by now, go ahead and rebuild channel VSIs
10430          * for this main VSI if they exist
10431          */
10432         ret = i40e_rebuild_channels(vsi);
10433         if (ret)
10434                 goto end_unlock;
10435
10436         /* Reconfigure hardware for allowing smaller MSS in the case
10437          * of TSO, so that we avoid the MDD being fired and causing
10438          * a reset in the case of small MSS+TSO.
10439          */
10440 #define I40E_REG_MSS          0x000E64DC
10441 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
10442 #define I40E_64BYTE_MSS       0x400000
10443         val = rd32(hw, I40E_REG_MSS);
10444         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
10445                 val &= ~I40E_REG_MSS_MIN_MASK;
10446                 val |= I40E_64BYTE_MSS;
10447                 wr32(hw, I40E_REG_MSS, val);
10448         }
10449
10450         if (pf->hw_features & I40E_HW_RESTART_AUTONEG) {
10451                 msleep(75);
10452                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10453                 if (ret)
10454                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10455                                  i40e_stat_str(&pf->hw, ret),
10456                                  i40e_aq_str(&pf->hw,
10457                                              pf->hw.aq.asq_last_status));
10458         }
10459         /* reinit the misc interrupt */
10460         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10461                 ret = i40e_setup_misc_vector(pf);
10462                 if (ret)
10463                         goto end_unlock;
10464         }
10465
10466         /* Add a filter to drop all Flow control frames from any VSI from being
10467          * transmitted. By doing so we stop a malicious VF from sending out
10468          * PAUSE or PFC frames and potentially controlling traffic for other
10469          * PF/VF VSIs.
10470          * The FW can still send Flow control frames if enabled.
10471          */
10472         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
10473                                                        pf->main_vsi_seid);
10474
10475         /* restart the VSIs that were rebuilt and running before the reset */
10476         i40e_pf_unquiesce_all_vsi(pf);
10477
10478         /* Release the RTNL lock before we start resetting VFs */
10479         if (!lock_acquired)
10480                 rtnl_unlock();
10481
10482         /* Restore promiscuous settings */
10483         ret = i40e_set_promiscuous(pf, pf->cur_promisc);
10484         if (ret)
10485                 dev_warn(&pf->pdev->dev,
10486                          "Failed to restore promiscuous setting: %s, err %s aq_err %s\n",
10487                          pf->cur_promisc ? "on" : "off",
10488                          i40e_stat_str(&pf->hw, ret),
10489                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10490
10491         i40e_reset_all_vfs(pf, true);
10492
10493         /* tell the firmware that we're starting */
10494         i40e_send_version(pf);
10495
10496         /* We've already released the lock, so don't do it again */
10497         goto end_core_reset;
10498
10499 end_unlock:
10500         if (!lock_acquired)
10501                 rtnl_unlock();
10502 end_core_reset:
10503         clear_bit(__I40E_RESET_FAILED, pf->state);
10504 clear_recovery:
10505         clear_bit(__I40E_RESET_RECOVERY_PENDING, pf->state);
10506         clear_bit(__I40E_TIMEOUT_RECOVERY_PENDING, pf->state);
10507 }
10508
10509 /**
10510  * i40e_reset_and_rebuild - reset and rebuild using a saved config
10511  * @pf: board private structure
10512  * @reinit: if the Main VSI needs to re-initialized.
10513  * @lock_acquired: indicates whether or not the lock has been acquired
10514  * before this function was called.
10515  **/
10516 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit,
10517                                    bool lock_acquired)
10518 {
10519         int ret;
10520         /* Now we wait for GRST to settle out.
10521          * We don't have to delete the VEBs or VSIs from the hw switch
10522          * because the reset will make them disappear.
10523          */
10524         ret = i40e_reset(pf);
10525         if (!ret)
10526                 i40e_rebuild(pf, reinit, lock_acquired);
10527 }
10528
10529 /**
10530  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
10531  * @pf: board private structure
10532  *
10533  * Close up the VFs and other things in prep for a Core Reset,
10534  * then get ready to rebuild the world.
10535  * @lock_acquired: indicates whether or not the lock has been acquired
10536  * before this function was called.
10537  **/
10538 static void i40e_handle_reset_warning(struct i40e_pf *pf, bool lock_acquired)
10539 {
10540         i40e_prep_for_reset(pf, lock_acquired);
10541         i40e_reset_and_rebuild(pf, false, lock_acquired);
10542 }
10543
10544 /**
10545  * i40e_handle_mdd_event
10546  * @pf: pointer to the PF structure
10547  *
10548  * Called from the MDD irq handler to identify possibly malicious vfs
10549  **/
10550 static void i40e_handle_mdd_event(struct i40e_pf *pf)
10551 {
10552         struct i40e_hw *hw = &pf->hw;
10553         bool mdd_detected = false;
10554         struct i40e_vf *vf;
10555         u32 reg;
10556         int i;
10557
10558         if (!test_bit(__I40E_MDD_EVENT_PENDING, pf->state))
10559                 return;
10560
10561         /* find what triggered the MDD event */
10562         reg = rd32(hw, I40E_GL_MDET_TX);
10563         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
10564                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
10565                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
10566                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
10567                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
10568                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
10569                                 I40E_GL_MDET_TX_EVENT_SHIFT;
10570                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
10571                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
10572                                 pf->hw.func_caps.base_queue;
10573                 if (netif_msg_tx_err(pf))
10574                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
10575                                  event, queue, pf_num, vf_num);
10576                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
10577                 mdd_detected = true;
10578         }
10579         reg = rd32(hw, I40E_GL_MDET_RX);
10580         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
10581                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
10582                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
10583                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
10584                                 I40E_GL_MDET_RX_EVENT_SHIFT;
10585                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
10586                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
10587                                 pf->hw.func_caps.base_queue;
10588                 if (netif_msg_rx_err(pf))
10589                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
10590                                  event, queue, func);
10591                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
10592                 mdd_detected = true;
10593         }
10594
10595         if (mdd_detected) {
10596                 reg = rd32(hw, I40E_PF_MDET_TX);
10597                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
10598                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
10599                         dev_dbg(&pf->pdev->dev, "TX driver issue detected on PF\n");
10600                 }
10601                 reg = rd32(hw, I40E_PF_MDET_RX);
10602                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
10603                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
10604                         dev_dbg(&pf->pdev->dev, "RX driver issue detected on PF\n");
10605                 }
10606         }
10607
10608         /* see if one of the VFs needs its hand slapped */
10609         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
10610                 vf = &(pf->vf[i]);
10611                 reg = rd32(hw, I40E_VP_MDET_TX(i));
10612                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
10613                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
10614                         vf->num_mdd_events++;
10615                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
10616                                  i);
10617                         dev_info(&pf->pdev->dev,
10618                                  "Use PF Control I/F to re-enable the VF\n");
10619                         set_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
10620                 }
10621
10622                 reg = rd32(hw, I40E_VP_MDET_RX(i));
10623                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
10624                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
10625                         vf->num_mdd_events++;
10626                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
10627                                  i);
10628                         dev_info(&pf->pdev->dev,
10629                                  "Use PF Control I/F to re-enable the VF\n");
10630                         set_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
10631                 }
10632         }
10633
10634         /* re-enable mdd interrupt cause */
10635         clear_bit(__I40E_MDD_EVENT_PENDING, pf->state);
10636         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
10637         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
10638         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
10639         i40e_flush(hw);
10640 }
10641
10642 /**
10643  * i40e_service_task - Run the driver's async subtasks
10644  * @work: pointer to work_struct containing our data
10645  **/
10646 static void i40e_service_task(struct work_struct *work)
10647 {
10648         struct i40e_pf *pf = container_of(work,
10649                                           struct i40e_pf,
10650                                           service_task);
10651         unsigned long start_time = jiffies;
10652
10653         /* don't bother with service tasks if a reset is in progress */
10654         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
10655             test_bit(__I40E_SUSPENDED, pf->state))
10656                 return;
10657
10658         if (test_and_set_bit(__I40E_SERVICE_SCHED, pf->state))
10659                 return;
10660
10661         if (!test_bit(__I40E_RECOVERY_MODE, pf->state)) {
10662                 i40e_detect_recover_hung(pf->vsi[pf->lan_vsi]);
10663                 i40e_sync_filters_subtask(pf);
10664                 i40e_reset_subtask(pf);
10665                 i40e_handle_mdd_event(pf);
10666                 i40e_vc_process_vflr_event(pf);
10667                 i40e_watchdog_subtask(pf);
10668                 i40e_fdir_reinit_subtask(pf);
10669                 if (test_and_clear_bit(__I40E_CLIENT_RESET, pf->state)) {
10670                         /* Client subtask will reopen next time through. */
10671                         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi],
10672                                                            true);
10673                 } else {
10674                         i40e_client_subtask(pf);
10675                         if (test_and_clear_bit(__I40E_CLIENT_L2_CHANGE,
10676                                                pf->state))
10677                                 i40e_notify_client_of_l2_param_changes(
10678                                                                 pf->vsi[pf->lan_vsi]);
10679                 }
10680                 i40e_sync_filters_subtask(pf);
10681         } else {
10682                 i40e_reset_subtask(pf);
10683         }
10684
10685         i40e_clean_adminq_subtask(pf);
10686
10687         /* flush memory to make sure state is correct before next watchdog */
10688         smp_mb__before_atomic();
10689         clear_bit(__I40E_SERVICE_SCHED, pf->state);
10690
10691         /* If the tasks have taken longer than one timer cycle or there
10692          * is more work to be done, reschedule the service task now
10693          * rather than wait for the timer to tick again.
10694          */
10695         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
10696             test_bit(__I40E_ADMINQ_EVENT_PENDING, pf->state)             ||
10697             test_bit(__I40E_MDD_EVENT_PENDING, pf->state)                ||
10698             test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
10699                 i40e_service_event_schedule(pf);
10700 }
10701
10702 /**
10703  * i40e_service_timer - timer callback
10704  * @t: timer list pointer
10705  **/
10706 static void i40e_service_timer(struct timer_list *t)
10707 {
10708         struct i40e_pf *pf = from_timer(pf, t, service_timer);
10709
10710         mod_timer(&pf->service_timer,
10711                   round_jiffies(jiffies + pf->service_timer_period));
10712         i40e_service_event_schedule(pf);
10713 }
10714
10715 /**
10716  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
10717  * @vsi: the VSI being configured
10718  **/
10719 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
10720 {
10721         struct i40e_pf *pf = vsi->back;
10722
10723         switch (vsi->type) {
10724         case I40E_VSI_MAIN:
10725                 vsi->alloc_queue_pairs = pf->num_lan_qps;
10726                 if (!vsi->num_tx_desc)
10727                         vsi->num_tx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
10728                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
10729                 if (!vsi->num_rx_desc)
10730                         vsi->num_rx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
10731                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
10732                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
10733                         vsi->num_q_vectors = pf->num_lan_msix;
10734                 else
10735                         vsi->num_q_vectors = 1;
10736
10737                 break;
10738
10739         case I40E_VSI_FDIR:
10740                 vsi->alloc_queue_pairs = 1;
10741                 vsi->num_tx_desc = ALIGN(I40E_FDIR_RING_COUNT,
10742                                          I40E_REQ_DESCRIPTOR_MULTIPLE);
10743                 vsi->num_rx_desc = ALIGN(I40E_FDIR_RING_COUNT,
10744                                          I40E_REQ_DESCRIPTOR_MULTIPLE);
10745                 vsi->num_q_vectors = pf->num_fdsb_msix;
10746                 break;
10747
10748         case I40E_VSI_VMDQ2:
10749                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
10750                 if (!vsi->num_tx_desc)
10751                         vsi->num_tx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
10752                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
10753                 if (!vsi->num_rx_desc)
10754                         vsi->num_rx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
10755                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
10756                 vsi->num_q_vectors = pf->num_vmdq_msix;
10757                 break;
10758
10759         case I40E_VSI_SRIOV:
10760                 vsi->alloc_queue_pairs = pf->num_vf_qps;
10761                 if (!vsi->num_tx_desc)
10762                         vsi->num_tx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
10763                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
10764                 if (!vsi->num_rx_desc)
10765                         vsi->num_rx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
10766                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
10767                 break;
10768
10769         default:
10770                 WARN_ON(1);
10771                 return -ENODATA;
10772         }
10773
10774         return 0;
10775 }
10776
10777 /**
10778  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
10779  * @vsi: VSI pointer
10780  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
10781  *
10782  * On error: returns error code (negative)
10783  * On success: returns 0
10784  **/
10785 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
10786 {
10787         struct i40e_ring **next_rings;
10788         int size;
10789         int ret = 0;
10790
10791         /* allocate memory for both Tx, XDP Tx and Rx ring pointers */
10792         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs *
10793                (i40e_enabled_xdp_vsi(vsi) ? 3 : 2);
10794         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
10795         if (!vsi->tx_rings)
10796                 return -ENOMEM;
10797         next_rings = vsi->tx_rings + vsi->alloc_queue_pairs;
10798         if (i40e_enabled_xdp_vsi(vsi)) {
10799                 vsi->xdp_rings = next_rings;
10800                 next_rings += vsi->alloc_queue_pairs;
10801         }
10802         vsi->rx_rings = next_rings;
10803
10804         if (alloc_qvectors) {
10805                 /* allocate memory for q_vector pointers */
10806                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
10807                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
10808                 if (!vsi->q_vectors) {
10809                         ret = -ENOMEM;
10810                         goto err_vectors;
10811                 }
10812         }
10813         return ret;
10814
10815 err_vectors:
10816         kfree(vsi->tx_rings);
10817         return ret;
10818 }
10819
10820 /**
10821  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
10822  * @pf: board private structure
10823  * @type: type of VSI
10824  *
10825  * On error: returns error code (negative)
10826  * On success: returns vsi index in PF (positive)
10827  **/
10828 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
10829 {
10830         int ret = -ENODEV;
10831         struct i40e_vsi *vsi;
10832         int vsi_idx;
10833         int i;
10834
10835         /* Need to protect the allocation of the VSIs at the PF level */
10836         mutex_lock(&pf->switch_mutex);
10837
10838         /* VSI list may be fragmented if VSI creation/destruction has
10839          * been happening.  We can afford to do a quick scan to look
10840          * for any free VSIs in the list.
10841          *
10842          * find next empty vsi slot, looping back around if necessary
10843          */
10844         i = pf->next_vsi;
10845         while (i < pf->num_alloc_vsi && pf->vsi[i])
10846                 i++;
10847         if (i >= pf->num_alloc_vsi) {
10848                 i = 0;
10849                 while (i < pf->next_vsi && pf->vsi[i])
10850                         i++;
10851         }
10852
10853         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
10854                 vsi_idx = i;             /* Found one! */
10855         } else {
10856                 ret = -ENODEV;
10857                 goto unlock_pf;  /* out of VSI slots! */
10858         }
10859         pf->next_vsi = ++i;
10860
10861         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
10862         if (!vsi) {
10863                 ret = -ENOMEM;
10864                 goto unlock_pf;
10865         }
10866         vsi->type = type;
10867         vsi->back = pf;
10868         set_bit(__I40E_VSI_DOWN, vsi->state);
10869         vsi->flags = 0;
10870         vsi->idx = vsi_idx;
10871         vsi->int_rate_limit = 0;
10872         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
10873                                 pf->rss_table_size : 64;
10874         vsi->netdev_registered = false;
10875         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
10876         hash_init(vsi->mac_filter_hash);
10877         vsi->irqs_ready = false;
10878
10879         if (type == I40E_VSI_MAIN) {
10880                 vsi->af_xdp_zc_qps = bitmap_zalloc(pf->num_lan_qps, GFP_KERNEL);
10881                 if (!vsi->af_xdp_zc_qps)
10882                         goto err_rings;
10883         }
10884
10885         ret = i40e_set_num_rings_in_vsi(vsi);
10886         if (ret)
10887                 goto err_rings;
10888
10889         ret = i40e_vsi_alloc_arrays(vsi, true);
10890         if (ret)
10891                 goto err_rings;
10892
10893         /* Setup default MSIX irq handler for VSI */
10894         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
10895
10896         /* Initialize VSI lock */
10897         spin_lock_init(&vsi->mac_filter_hash_lock);
10898         pf->vsi[vsi_idx] = vsi;
10899         ret = vsi_idx;
10900         goto unlock_pf;
10901
10902 err_rings:
10903         bitmap_free(vsi->af_xdp_zc_qps);
10904         pf->next_vsi = i - 1;
10905         kfree(vsi);
10906 unlock_pf:
10907         mutex_unlock(&pf->switch_mutex);
10908         return ret;
10909 }
10910
10911 /**
10912  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
10913  * @vsi: VSI pointer
10914  * @free_qvectors: a bool to specify if q_vectors need to be freed.
10915  *
10916  * On error: returns error code (negative)
10917  * On success: returns 0
10918  **/
10919 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
10920 {
10921         /* free the ring and vector containers */
10922         if (free_qvectors) {
10923                 kfree(vsi->q_vectors);
10924                 vsi->q_vectors = NULL;
10925         }
10926         kfree(vsi->tx_rings);
10927         vsi->tx_rings = NULL;
10928         vsi->rx_rings = NULL;
10929         vsi->xdp_rings = NULL;
10930 }
10931
10932 /**
10933  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
10934  * and lookup table
10935  * @vsi: Pointer to VSI structure
10936  */
10937 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
10938 {
10939         if (!vsi)
10940                 return;
10941
10942         kfree(vsi->rss_hkey_user);
10943         vsi->rss_hkey_user = NULL;
10944
10945         kfree(vsi->rss_lut_user);
10946         vsi->rss_lut_user = NULL;
10947 }
10948
10949 /**
10950  * i40e_vsi_clear - Deallocate the VSI provided
10951  * @vsi: the VSI being un-configured
10952  **/
10953 static int i40e_vsi_clear(struct i40e_vsi *vsi)
10954 {
10955         struct i40e_pf *pf;
10956
10957         if (!vsi)
10958                 return 0;
10959
10960         if (!vsi->back)
10961                 goto free_vsi;
10962         pf = vsi->back;
10963
10964         mutex_lock(&pf->switch_mutex);
10965         if (!pf->vsi[vsi->idx]) {
10966                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](type %d)\n",
10967                         vsi->idx, vsi->idx, vsi->type);
10968                 goto unlock_vsi;
10969         }
10970
10971         if (pf->vsi[vsi->idx] != vsi) {
10972                 dev_err(&pf->pdev->dev,
10973                         "pf->vsi[%d](type %d) != vsi[%d](type %d): no free!\n",
10974                         pf->vsi[vsi->idx]->idx,
10975                         pf->vsi[vsi->idx]->type,
10976                         vsi->idx, vsi->type);
10977                 goto unlock_vsi;
10978         }
10979
10980         /* updates the PF for this cleared vsi */
10981         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
10982         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
10983
10984         bitmap_free(vsi->af_xdp_zc_qps);
10985         i40e_vsi_free_arrays(vsi, true);
10986         i40e_clear_rss_config_user(vsi);
10987
10988         pf->vsi[vsi->idx] = NULL;
10989         if (vsi->idx < pf->next_vsi)
10990                 pf->next_vsi = vsi->idx;
10991
10992 unlock_vsi:
10993         mutex_unlock(&pf->switch_mutex);
10994 free_vsi:
10995         kfree(vsi);
10996
10997         return 0;
10998 }
10999
11000 /**
11001  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
11002  * @vsi: the VSI being cleaned
11003  **/
11004 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
11005 {
11006         int i;
11007
11008         if (vsi->tx_rings && vsi->tx_rings[0]) {
11009                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
11010                         kfree_rcu(vsi->tx_rings[i], rcu);
11011                         WRITE_ONCE(vsi->tx_rings[i], NULL);
11012                         WRITE_ONCE(vsi->rx_rings[i], NULL);
11013                         if (vsi->xdp_rings)
11014                                 WRITE_ONCE(vsi->xdp_rings[i], NULL);
11015                 }
11016         }
11017 }
11018
11019 /**
11020  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
11021  * @vsi: the VSI being configured
11022  **/
11023 static int i40e_alloc_rings(struct i40e_vsi *vsi)
11024 {
11025         int i, qpv = i40e_enabled_xdp_vsi(vsi) ? 3 : 2;
11026         struct i40e_pf *pf = vsi->back;
11027         struct i40e_ring *ring;
11028
11029         /* Set basic values in the rings to be used later during open() */
11030         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
11031                 /* allocate space for both Tx and Rx in one shot */
11032                 ring = kcalloc(qpv, sizeof(struct i40e_ring), GFP_KERNEL);
11033                 if (!ring)
11034                         goto err_out;
11035
11036                 ring->queue_index = i;
11037                 ring->reg_idx = vsi->base_queue + i;
11038                 ring->ring_active = false;
11039                 ring->vsi = vsi;
11040                 ring->netdev = vsi->netdev;
11041                 ring->dev = &pf->pdev->dev;
11042                 ring->count = vsi->num_tx_desc;
11043                 ring->size = 0;
11044                 ring->dcb_tc = 0;
11045                 if (vsi->back->hw_features & I40E_HW_WB_ON_ITR_CAPABLE)
11046                         ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
11047                 ring->itr_setting = pf->tx_itr_default;
11048                 WRITE_ONCE(vsi->tx_rings[i], ring++);
11049
11050                 if (!i40e_enabled_xdp_vsi(vsi))
11051                         goto setup_rx;
11052
11053                 ring->queue_index = vsi->alloc_queue_pairs + i;
11054                 ring->reg_idx = vsi->base_queue + ring->queue_index;
11055                 ring->ring_active = false;
11056                 ring->vsi = vsi;
11057                 ring->netdev = NULL;
11058                 ring->dev = &pf->pdev->dev;
11059                 ring->count = vsi->num_tx_desc;
11060                 ring->size = 0;
11061                 ring->dcb_tc = 0;
11062                 if (vsi->back->hw_features & I40E_HW_WB_ON_ITR_CAPABLE)
11063                         ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
11064                 set_ring_xdp(ring);
11065                 ring->itr_setting = pf->tx_itr_default;
11066                 WRITE_ONCE(vsi->xdp_rings[i], ring++);
11067
11068 setup_rx:
11069                 ring->queue_index = i;
11070                 ring->reg_idx = vsi->base_queue + i;
11071                 ring->ring_active = false;
11072                 ring->vsi = vsi;
11073                 ring->netdev = vsi->netdev;
11074                 ring->dev = &pf->pdev->dev;
11075                 ring->count = vsi->num_rx_desc;
11076                 ring->size = 0;
11077                 ring->dcb_tc = 0;
11078                 ring->itr_setting = pf->rx_itr_default;
11079                 WRITE_ONCE(vsi->rx_rings[i], ring);
11080         }
11081
11082         return 0;
11083
11084 err_out:
11085         i40e_vsi_clear_rings(vsi);
11086         return -ENOMEM;
11087 }
11088
11089 /**
11090  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
11091  * @pf: board private structure
11092  * @vectors: the number of MSI-X vectors to request
11093  *
11094  * Returns the number of vectors reserved, or error
11095  **/
11096 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
11097 {
11098         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
11099                                         I40E_MIN_MSIX, vectors);
11100         if (vectors < 0) {
11101                 dev_info(&pf->pdev->dev,
11102                          "MSI-X vector reservation failed: %d\n", vectors);
11103                 vectors = 0;
11104         }
11105
11106         return vectors;
11107 }
11108
11109 /**
11110  * i40e_init_msix - Setup the MSIX capability
11111  * @pf: board private structure
11112  *
11113  * Work with the OS to set up the MSIX vectors needed.
11114  *
11115  * Returns the number of vectors reserved or negative on failure
11116  **/
11117 static int i40e_init_msix(struct i40e_pf *pf)
11118 {
11119         struct i40e_hw *hw = &pf->hw;
11120         int cpus, extra_vectors;
11121         int vectors_left;
11122         int v_budget, i;
11123         int v_actual;
11124         int iwarp_requested = 0;
11125
11126         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
11127                 return -ENODEV;
11128
11129         /* The number of vectors we'll request will be comprised of:
11130          *   - Add 1 for "other" cause for Admin Queue events, etc.
11131          *   - The number of LAN queue pairs
11132          *      - Queues being used for RSS.
11133          *              We don't need as many as max_rss_size vectors.
11134          *              use rss_size instead in the calculation since that
11135          *              is governed by number of cpus in the system.
11136          *      - assumes symmetric Tx/Rx pairing
11137          *   - The number of VMDq pairs
11138          *   - The CPU count within the NUMA node if iWARP is enabled
11139          * Once we count this up, try the request.
11140          *
11141          * If we can't get what we want, we'll simplify to nearly nothing
11142          * and try again.  If that still fails, we punt.
11143          */
11144         vectors_left = hw->func_caps.num_msix_vectors;
11145         v_budget = 0;
11146
11147         /* reserve one vector for miscellaneous handler */
11148         if (vectors_left) {
11149                 v_budget++;
11150                 vectors_left--;
11151         }
11152
11153         /* reserve some vectors for the main PF traffic queues. Initially we
11154          * only reserve at most 50% of the available vectors, in the case that
11155          * the number of online CPUs is large. This ensures that we can enable
11156          * extra features as well. Once we've enabled the other features, we
11157          * will use any remaining vectors to reach as close as we can to the
11158          * number of online CPUs.
11159          */
11160         cpus = num_online_cpus();
11161         pf->num_lan_msix = min_t(int, cpus, vectors_left / 2);
11162         vectors_left -= pf->num_lan_msix;
11163
11164         /* reserve one vector for sideband flow director */
11165         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
11166                 if (vectors_left) {
11167                         pf->num_fdsb_msix = 1;
11168                         v_budget++;
11169                         vectors_left--;
11170                 } else {
11171                         pf->num_fdsb_msix = 0;
11172                 }
11173         }
11174
11175         /* can we reserve enough for iWARP? */
11176         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11177                 iwarp_requested = pf->num_iwarp_msix;
11178
11179                 if (!vectors_left)
11180                         pf->num_iwarp_msix = 0;
11181                 else if (vectors_left < pf->num_iwarp_msix)
11182                         pf->num_iwarp_msix = 1;
11183                 v_budget += pf->num_iwarp_msix;
11184                 vectors_left -= pf->num_iwarp_msix;
11185         }
11186
11187         /* any vectors left over go for VMDq support */
11188         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
11189                 if (!vectors_left) {
11190                         pf->num_vmdq_msix = 0;
11191                         pf->num_vmdq_qps = 0;
11192                 } else {
11193                         int vmdq_vecs_wanted =
11194                                 pf->num_vmdq_vsis * pf->num_vmdq_qps;
11195                         int vmdq_vecs =
11196                                 min_t(int, vectors_left, vmdq_vecs_wanted);
11197
11198                         /* if we're short on vectors for what's desired, we limit
11199                          * the queues per vmdq.  If this is still more than are
11200                          * available, the user will need to change the number of
11201                          * queues/vectors used by the PF later with the ethtool
11202                          * channels command
11203                          */
11204                         if (vectors_left < vmdq_vecs_wanted) {
11205                                 pf->num_vmdq_qps = 1;
11206                                 vmdq_vecs_wanted = pf->num_vmdq_vsis;
11207                                 vmdq_vecs = min_t(int,
11208                                                   vectors_left,
11209                                                   vmdq_vecs_wanted);
11210                         }
11211                         pf->num_vmdq_msix = pf->num_vmdq_qps;
11212
11213                         v_budget += vmdq_vecs;
11214                         vectors_left -= vmdq_vecs;
11215                 }
11216         }
11217
11218         /* On systems with a large number of SMP cores, we previously limited
11219          * the number of vectors for num_lan_msix to be at most 50% of the
11220          * available vectors, to allow for other features. Now, we add back
11221          * the remaining vectors. However, we ensure that the total
11222          * num_lan_msix will not exceed num_online_cpus(). To do this, we
11223          * calculate the number of vectors we can add without going over the
11224          * cap of CPUs. For systems with a small number of CPUs this will be
11225          * zero.
11226          */
11227         extra_vectors = min_t(int, cpus - pf->num_lan_msix, vectors_left);
11228         pf->num_lan_msix += extra_vectors;
11229         vectors_left -= extra_vectors;
11230
11231         WARN(vectors_left < 0,
11232              "Calculation of remaining vectors underflowed. This is an accounting bug when determining total MSI-X vectors.\n");
11233
11234         v_budget += pf->num_lan_msix;
11235         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
11236                                    GFP_KERNEL);
11237         if (!pf->msix_entries)
11238                 return -ENOMEM;
11239
11240         for (i = 0; i < v_budget; i++)
11241                 pf->msix_entries[i].entry = i;
11242         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
11243
11244         if (v_actual < I40E_MIN_MSIX) {
11245                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
11246                 kfree(pf->msix_entries);
11247                 pf->msix_entries = NULL;
11248                 pci_disable_msix(pf->pdev);
11249                 return -ENODEV;
11250
11251         } else if (v_actual == I40E_MIN_MSIX) {
11252                 /* Adjust for minimal MSIX use */
11253                 pf->num_vmdq_vsis = 0;
11254                 pf->num_vmdq_qps = 0;
11255                 pf->num_lan_qps = 1;
11256                 pf->num_lan_msix = 1;
11257
11258         } else if (v_actual != v_budget) {
11259                 /* If we have limited resources, we will start with no vectors
11260                  * for the special features and then allocate vectors to some
11261                  * of these features based on the policy and at the end disable
11262                  * the features that did not get any vectors.
11263                  */
11264                 int vec;
11265
11266                 dev_info(&pf->pdev->dev,
11267                          "MSI-X vector limit reached with %d, wanted %d, attempting to redistribute vectors\n",
11268                          v_actual, v_budget);
11269                 /* reserve the misc vector */
11270                 vec = v_actual - 1;
11271
11272                 /* Scale vector usage down */
11273                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
11274                 pf->num_vmdq_vsis = 1;
11275                 pf->num_vmdq_qps = 1;
11276
11277                 /* partition out the remaining vectors */
11278                 switch (vec) {
11279                 case 2:
11280                         pf->num_lan_msix = 1;
11281                         break;
11282                 case 3:
11283                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11284                                 pf->num_lan_msix = 1;
11285                                 pf->num_iwarp_msix = 1;
11286                         } else {
11287                                 pf->num_lan_msix = 2;
11288                         }
11289                         break;
11290                 default:
11291                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11292                                 pf->num_iwarp_msix = min_t(int, (vec / 3),
11293                                                  iwarp_requested);
11294                                 pf->num_vmdq_vsis = min_t(int, (vec / 3),
11295                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
11296                         } else {
11297                                 pf->num_vmdq_vsis = min_t(int, (vec / 2),
11298                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
11299                         }
11300                         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
11301                                 pf->num_fdsb_msix = 1;
11302                                 vec--;
11303                         }
11304                         pf->num_lan_msix = min_t(int,
11305                                (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
11306                                                               pf->num_lan_msix);
11307                         pf->num_lan_qps = pf->num_lan_msix;
11308                         break;
11309                 }
11310         }
11311
11312         if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
11313             (pf->num_fdsb_msix == 0)) {
11314                 dev_info(&pf->pdev->dev, "Sideband Flowdir disabled, not enough MSI-X vectors\n");
11315                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
11316                 pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
11317         }
11318         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
11319             (pf->num_vmdq_msix == 0)) {
11320                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
11321                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
11322         }
11323
11324         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
11325             (pf->num_iwarp_msix == 0)) {
11326                 dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
11327                 pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
11328         }
11329         i40e_debug(&pf->hw, I40E_DEBUG_INIT,
11330                    "MSI-X vector distribution: PF %d, VMDq %d, FDSB %d, iWARP %d\n",
11331                    pf->num_lan_msix,
11332                    pf->num_vmdq_msix * pf->num_vmdq_vsis,
11333                    pf->num_fdsb_msix,
11334                    pf->num_iwarp_msix);
11335
11336         return v_actual;
11337 }
11338
11339 /**
11340  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
11341  * @vsi: the VSI being configured
11342  * @v_idx: index of the vector in the vsi struct
11343  *
11344  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
11345  **/
11346 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
11347 {
11348         struct i40e_q_vector *q_vector;
11349
11350         /* allocate q_vector */
11351         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
11352         if (!q_vector)
11353                 return -ENOMEM;
11354
11355         q_vector->vsi = vsi;
11356         q_vector->v_idx = v_idx;
11357         cpumask_copy(&q_vector->affinity_mask, cpu_possible_mask);
11358
11359         if (vsi->netdev)
11360                 netif_napi_add(vsi->netdev, &q_vector->napi,
11361                                i40e_napi_poll, NAPI_POLL_WEIGHT);
11362
11363         /* tie q_vector and vsi together */
11364         vsi->q_vectors[v_idx] = q_vector;
11365
11366         return 0;
11367 }
11368
11369 /**
11370  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
11371  * @vsi: the VSI being configured
11372  *
11373  * We allocate one q_vector per queue interrupt.  If allocation fails we
11374  * return -ENOMEM.
11375  **/
11376 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
11377 {
11378         struct i40e_pf *pf = vsi->back;
11379         int err, v_idx, num_q_vectors;
11380
11381         /* if not MSIX, give the one vector only to the LAN VSI */
11382         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
11383                 num_q_vectors = vsi->num_q_vectors;
11384         else if (vsi == pf->vsi[pf->lan_vsi])
11385                 num_q_vectors = 1;
11386         else
11387                 return -EINVAL;
11388
11389         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
11390                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
11391                 if (err)
11392                         goto err_out;
11393         }
11394
11395         return 0;
11396
11397 err_out:
11398         while (v_idx--)
11399                 i40e_free_q_vector(vsi, v_idx);
11400
11401         return err;
11402 }
11403
11404 /**
11405  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
11406  * @pf: board private structure to initialize
11407  **/
11408 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
11409 {
11410         int vectors = 0;
11411         ssize_t size;
11412
11413         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11414                 vectors = i40e_init_msix(pf);
11415                 if (vectors < 0) {
11416                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
11417                                        I40E_FLAG_IWARP_ENABLED  |
11418                                        I40E_FLAG_RSS_ENABLED    |
11419                                        I40E_FLAG_DCB_CAPABLE    |
11420                                        I40E_FLAG_DCB_ENABLED    |
11421                                        I40E_FLAG_SRIOV_ENABLED  |
11422                                        I40E_FLAG_FD_SB_ENABLED  |
11423                                        I40E_FLAG_FD_ATR_ENABLED |
11424                                        I40E_FLAG_VMDQ_ENABLED);
11425                         pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
11426
11427                         /* rework the queue expectations without MSIX */
11428                         i40e_determine_queue_usage(pf);
11429                 }
11430         }
11431
11432         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11433             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
11434                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
11435                 vectors = pci_enable_msi(pf->pdev);
11436                 if (vectors < 0) {
11437                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
11438                                  vectors);
11439                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
11440                 }
11441                 vectors = 1;  /* one MSI or Legacy vector */
11442         }
11443
11444         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
11445                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
11446
11447         /* set up vector assignment tracking */
11448         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
11449         pf->irq_pile = kzalloc(size, GFP_KERNEL);
11450         if (!pf->irq_pile)
11451                 return -ENOMEM;
11452
11453         pf->irq_pile->num_entries = vectors;
11454
11455         /* track first vector for misc interrupts, ignore return */
11456         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
11457
11458         return 0;
11459 }
11460
11461 /**
11462  * i40e_restore_interrupt_scheme - Restore the interrupt scheme
11463  * @pf: private board data structure
11464  *
11465  * Restore the interrupt scheme that was cleared when we suspended the
11466  * device. This should be called during resume to re-allocate the q_vectors
11467  * and reacquire IRQs.
11468  */
11469 static int i40e_restore_interrupt_scheme(struct i40e_pf *pf)
11470 {
11471         int err, i;
11472
11473         /* We cleared the MSI and MSI-X flags when disabling the old interrupt
11474          * scheme. We need to re-enabled them here in order to attempt to
11475          * re-acquire the MSI or MSI-X vectors
11476          */
11477         pf->flags |= (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
11478
11479         err = i40e_init_interrupt_scheme(pf);
11480         if (err)
11481                 return err;
11482
11483         /* Now that we've re-acquired IRQs, we need to remap the vectors and
11484          * rings together again.
11485          */
11486         for (i = 0; i < pf->num_alloc_vsi; i++) {
11487                 if (pf->vsi[i]) {
11488                         err = i40e_vsi_alloc_q_vectors(pf->vsi[i]);
11489                         if (err)
11490                                 goto err_unwind;
11491                         i40e_vsi_map_rings_to_vectors(pf->vsi[i]);
11492                 }
11493         }
11494
11495         err = i40e_setup_misc_vector(pf);
11496         if (err)
11497                 goto err_unwind;
11498
11499         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
11500                 i40e_client_update_msix_info(pf);
11501
11502         return 0;
11503
11504 err_unwind:
11505         while (i--) {
11506                 if (pf->vsi[i])
11507                         i40e_vsi_free_q_vectors(pf->vsi[i]);
11508         }
11509
11510         return err;
11511 }
11512
11513 /**
11514  * i40e_setup_misc_vector_for_recovery_mode - Setup the misc vector to handle
11515  * non queue events in recovery mode
11516  * @pf: board private structure
11517  *
11518  * This sets up the handler for MSIX 0 or MSI/legacy, which is used to manage
11519  * the non-queue interrupts, e.g. AdminQ and errors in recovery mode.
11520  * This is handled differently than in recovery mode since no Tx/Rx resources
11521  * are being allocated.
11522  **/
11523 static int i40e_setup_misc_vector_for_recovery_mode(struct i40e_pf *pf)
11524 {
11525         int err;
11526
11527         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11528                 err = i40e_setup_misc_vector(pf);
11529
11530                 if (err) {
11531                         dev_info(&pf->pdev->dev,
11532                                  "MSI-X misc vector request failed, error %d\n",
11533                                  err);
11534                         return err;
11535                 }
11536         } else {
11537                 u32 flags = pf->flags & I40E_FLAG_MSI_ENABLED ? 0 : IRQF_SHARED;
11538
11539                 err = request_irq(pf->pdev->irq, i40e_intr, flags,
11540                                   pf->int_name, pf);
11541
11542                 if (err) {
11543                         dev_info(&pf->pdev->dev,
11544                                  "MSI/legacy misc vector request failed, error %d\n",
11545                                  err);
11546                         return err;
11547                 }
11548                 i40e_enable_misc_int_causes(pf);
11549                 i40e_irq_dynamic_enable_icr0(pf);
11550         }
11551
11552         return 0;
11553 }
11554
11555 /**
11556  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
11557  * @pf: board private structure
11558  *
11559  * This sets up the handler for MSIX 0, which is used to manage the
11560  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
11561  * when in MSI or Legacy interrupt mode.
11562  **/
11563 static int i40e_setup_misc_vector(struct i40e_pf *pf)
11564 {
11565         struct i40e_hw *hw = &pf->hw;
11566         int err = 0;
11567
11568         /* Only request the IRQ once, the first time through. */
11569         if (!test_and_set_bit(__I40E_MISC_IRQ_REQUESTED, pf->state)) {
11570                 err = request_irq(pf->msix_entries[0].vector,
11571                                   i40e_intr, 0, pf->int_name, pf);
11572                 if (err) {
11573                         clear_bit(__I40E_MISC_IRQ_REQUESTED, pf->state);
11574                         dev_info(&pf->pdev->dev,
11575                                  "request_irq for %s failed: %d\n",
11576                                  pf->int_name, err);
11577                         return -EFAULT;
11578                 }
11579         }
11580
11581         i40e_enable_misc_int_causes(pf);
11582
11583         /* associate no queues to the misc vector */
11584         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
11585         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K >> 1);
11586
11587         i40e_flush(hw);
11588
11589         i40e_irq_dynamic_enable_icr0(pf);
11590
11591         return err;
11592 }
11593
11594 /**
11595  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
11596  * @vsi: Pointer to vsi structure
11597  * @seed: Buffter to store the hash keys
11598  * @lut: Buffer to store the lookup table entries
11599  * @lut_size: Size of buffer to store the lookup table entries
11600  *
11601  * Return 0 on success, negative on failure
11602  */
11603 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
11604                            u8 *lut, u16 lut_size)
11605 {
11606         struct i40e_pf *pf = vsi->back;
11607         struct i40e_hw *hw = &pf->hw;
11608         int ret = 0;
11609
11610         if (seed) {
11611                 ret = i40e_aq_get_rss_key(hw, vsi->id,
11612                         (struct i40e_aqc_get_set_rss_key_data *)seed);
11613                 if (ret) {
11614                         dev_info(&pf->pdev->dev,
11615                                  "Cannot get RSS key, err %s aq_err %s\n",
11616                                  i40e_stat_str(&pf->hw, ret),
11617                                  i40e_aq_str(&pf->hw,
11618                                              pf->hw.aq.asq_last_status));
11619                         return ret;
11620                 }
11621         }
11622
11623         if (lut) {
11624                 bool pf_lut = vsi->type == I40E_VSI_MAIN;
11625
11626                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
11627                 if (ret) {
11628                         dev_info(&pf->pdev->dev,
11629                                  "Cannot get RSS lut, err %s aq_err %s\n",
11630                                  i40e_stat_str(&pf->hw, ret),
11631                                  i40e_aq_str(&pf->hw,
11632                                              pf->hw.aq.asq_last_status));
11633                         return ret;
11634                 }
11635         }
11636
11637         return ret;
11638 }
11639
11640 /**
11641  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
11642  * @vsi: Pointer to vsi structure
11643  * @seed: RSS hash seed
11644  * @lut: Lookup table
11645  * @lut_size: Lookup table size
11646  *
11647  * Returns 0 on success, negative on failure
11648  **/
11649 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
11650                                const u8 *lut, u16 lut_size)
11651 {
11652         struct i40e_pf *pf = vsi->back;
11653         struct i40e_hw *hw = &pf->hw;
11654         u16 vf_id = vsi->vf_id;
11655         u8 i;
11656
11657         /* Fill out hash function seed */
11658         if (seed) {
11659                 u32 *seed_dw = (u32 *)seed;
11660
11661                 if (vsi->type == I40E_VSI_MAIN) {
11662                         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
11663                                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
11664                 } else if (vsi->type == I40E_VSI_SRIOV) {
11665                         for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
11666                                 wr32(hw, I40E_VFQF_HKEY1(i, vf_id), seed_dw[i]);
11667                 } else {
11668                         dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
11669                 }
11670         }
11671
11672         if (lut) {
11673                 u32 *lut_dw = (u32 *)lut;
11674
11675                 if (vsi->type == I40E_VSI_MAIN) {
11676                         if (lut_size != I40E_HLUT_ARRAY_SIZE)
11677                                 return -EINVAL;
11678                         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
11679                                 wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
11680                 } else if (vsi->type == I40E_VSI_SRIOV) {
11681                         if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
11682                                 return -EINVAL;
11683                         for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
11684                                 wr32(hw, I40E_VFQF_HLUT1(i, vf_id), lut_dw[i]);
11685                 } else {
11686                         dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
11687                 }
11688         }
11689         i40e_flush(hw);
11690
11691         return 0;
11692 }
11693
11694 /**
11695  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
11696  * @vsi: Pointer to VSI structure
11697  * @seed: Buffer to store the keys
11698  * @lut: Buffer to store the lookup table entries
11699  * @lut_size: Size of buffer to store the lookup table entries
11700  *
11701  * Returns 0 on success, negative on failure
11702  */
11703 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
11704                             u8 *lut, u16 lut_size)
11705 {
11706         struct i40e_pf *pf = vsi->back;
11707         struct i40e_hw *hw = &pf->hw;
11708         u16 i;
11709
11710         if (seed) {
11711                 u32 *seed_dw = (u32 *)seed;
11712
11713                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
11714                         seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
11715         }
11716         if (lut) {
11717                 u32 *lut_dw = (u32 *)lut;
11718
11719                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
11720                         return -EINVAL;
11721                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
11722                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
11723         }
11724
11725         return 0;
11726 }
11727
11728 /**
11729  * i40e_config_rss - Configure RSS keys and lut
11730  * @vsi: Pointer to VSI structure
11731  * @seed: RSS hash seed
11732  * @lut: Lookup table
11733  * @lut_size: Lookup table size
11734  *
11735  * Returns 0 on success, negative on failure
11736  */
11737 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
11738 {
11739         struct i40e_pf *pf = vsi->back;
11740
11741         if (pf->hw_features & I40E_HW_RSS_AQ_CAPABLE)
11742                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
11743         else
11744                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
11745 }
11746
11747 /**
11748  * i40e_get_rss - Get RSS keys and lut
11749  * @vsi: Pointer to VSI structure
11750  * @seed: Buffer to store the keys
11751  * @lut: Buffer to store the lookup table entries
11752  * @lut_size: Size of buffer to store the lookup table entries
11753  *
11754  * Returns 0 on success, negative on failure
11755  */
11756 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
11757 {
11758         struct i40e_pf *pf = vsi->back;
11759
11760         if (pf->hw_features & I40E_HW_RSS_AQ_CAPABLE)
11761                 return i40e_get_rss_aq(vsi, seed, lut, lut_size);
11762         else
11763                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
11764 }
11765
11766 /**
11767  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
11768  * @pf: Pointer to board private structure
11769  * @lut: Lookup table
11770  * @rss_table_size: Lookup table size
11771  * @rss_size: Range of queue number for hashing
11772  */
11773 void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
11774                        u16 rss_table_size, u16 rss_size)
11775 {
11776         u16 i;
11777
11778         for (i = 0; i < rss_table_size; i++)
11779                 lut[i] = i % rss_size;
11780 }
11781
11782 /**
11783  * i40e_pf_config_rss - Prepare for RSS if used
11784  * @pf: board private structure
11785  **/
11786 static int i40e_pf_config_rss(struct i40e_pf *pf)
11787 {
11788         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
11789         u8 seed[I40E_HKEY_ARRAY_SIZE];
11790         u8 *lut;
11791         struct i40e_hw *hw = &pf->hw;
11792         u32 reg_val;
11793         u64 hena;
11794         int ret;
11795
11796         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
11797         hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
11798                 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
11799         hena |= i40e_pf_get_default_rss_hena(pf);
11800
11801         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
11802         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
11803
11804         /* Determine the RSS table size based on the hardware capabilities */
11805         reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
11806         reg_val = (pf->rss_table_size == 512) ?
11807                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
11808                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
11809         i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
11810
11811         /* Determine the RSS size of the VSI */
11812         if (!vsi->rss_size) {
11813                 u16 qcount;
11814                 /* If the firmware does something weird during VSI init, we
11815                  * could end up with zero TCs. Check for that to avoid
11816                  * divide-by-zero. It probably won't pass traffic, but it also
11817                  * won't panic.
11818                  */
11819                 qcount = vsi->num_queue_pairs /
11820                          (vsi->tc_config.numtc ? vsi->tc_config.numtc : 1);
11821                 vsi->rss_size = min_t(int, pf->alloc_rss_size, qcount);
11822         }
11823         if (!vsi->rss_size)
11824                 return -EINVAL;
11825
11826         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
11827         if (!lut)
11828                 return -ENOMEM;
11829
11830         /* Use user configured lut if there is one, otherwise use default */
11831         if (vsi->rss_lut_user)
11832                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
11833         else
11834                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
11835
11836         /* Use user configured hash key if there is one, otherwise
11837          * use default.
11838          */
11839         if (vsi->rss_hkey_user)
11840                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
11841         else
11842                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
11843         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
11844         kfree(lut);
11845
11846         return ret;
11847 }
11848
11849 /**
11850  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
11851  * @pf: board private structure
11852  * @queue_count: the requested queue count for rss.
11853  *
11854  * returns 0 if rss is not enabled, if enabled returns the final rss queue
11855  * count which may be different from the requested queue count.
11856  * Note: expects to be called while under rtnl_lock()
11857  **/
11858 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
11859 {
11860         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
11861         int new_rss_size;
11862
11863         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
11864                 return 0;
11865
11866         queue_count = min_t(int, queue_count, num_online_cpus());
11867         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
11868
11869         if (queue_count != vsi->num_queue_pairs) {
11870                 u16 qcount;
11871
11872                 vsi->req_queue_pairs = queue_count;
11873                 i40e_prep_for_reset(pf, true);
11874
11875                 pf->alloc_rss_size = new_rss_size;
11876
11877                 i40e_reset_and_rebuild(pf, true, true);
11878
11879                 /* Discard the user configured hash keys and lut, if less
11880                  * queues are enabled.
11881                  */
11882                 if (queue_count < vsi->rss_size) {
11883                         i40e_clear_rss_config_user(vsi);
11884                         dev_dbg(&pf->pdev->dev,
11885                                 "discard user configured hash keys and lut\n");
11886                 }
11887
11888                 /* Reset vsi->rss_size, as number of enabled queues changed */
11889                 qcount = vsi->num_queue_pairs / vsi->tc_config.numtc;
11890                 vsi->rss_size = min_t(int, pf->alloc_rss_size, qcount);
11891
11892                 i40e_pf_config_rss(pf);
11893         }
11894         dev_info(&pf->pdev->dev, "User requested queue count/HW max RSS count:  %d/%d\n",
11895                  vsi->req_queue_pairs, pf->rss_size_max);
11896         return pf->alloc_rss_size;
11897 }
11898
11899 /**
11900  * i40e_get_partition_bw_setting - Retrieve BW settings for this PF partition
11901  * @pf: board private structure
11902  **/
11903 i40e_status i40e_get_partition_bw_setting(struct i40e_pf *pf)
11904 {
11905         i40e_status status;
11906         bool min_valid, max_valid;
11907         u32 max_bw, min_bw;
11908
11909         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
11910                                            &min_valid, &max_valid);
11911
11912         if (!status) {
11913                 if (min_valid)
11914                         pf->min_bw = min_bw;
11915                 if (max_valid)
11916                         pf->max_bw = max_bw;
11917         }
11918
11919         return status;
11920 }
11921
11922 /**
11923  * i40e_set_partition_bw_setting - Set BW settings for this PF partition
11924  * @pf: board private structure
11925  **/
11926 i40e_status i40e_set_partition_bw_setting(struct i40e_pf *pf)
11927 {
11928         struct i40e_aqc_configure_partition_bw_data bw_data;
11929         i40e_status status;
11930
11931         memset(&bw_data, 0, sizeof(bw_data));
11932
11933         /* Set the valid bit for this PF */
11934         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
11935         bw_data.max_bw[pf->hw.pf_id] = pf->max_bw & I40E_ALT_BW_VALUE_MASK;
11936         bw_data.min_bw[pf->hw.pf_id] = pf->min_bw & I40E_ALT_BW_VALUE_MASK;
11937
11938         /* Set the new bandwidths */
11939         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
11940
11941         return status;
11942 }
11943
11944 /**
11945  * i40e_commit_partition_bw_setting - Commit BW settings for this PF partition
11946  * @pf: board private structure
11947  **/
11948 i40e_status i40e_commit_partition_bw_setting(struct i40e_pf *pf)
11949 {
11950         /* Commit temporary BW setting to permanent NVM image */
11951         enum i40e_admin_queue_err last_aq_status;
11952         i40e_status ret;
11953         u16 nvm_word;
11954
11955         if (pf->hw.partition_id != 1) {
11956                 dev_info(&pf->pdev->dev,
11957                          "Commit BW only works on partition 1! This is partition %d",
11958                          pf->hw.partition_id);
11959                 ret = I40E_NOT_SUPPORTED;
11960                 goto bw_commit_out;
11961         }
11962
11963         /* Acquire NVM for read access */
11964         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
11965         last_aq_status = pf->hw.aq.asq_last_status;
11966         if (ret) {
11967                 dev_info(&pf->pdev->dev,
11968                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
11969                          i40e_stat_str(&pf->hw, ret),
11970                          i40e_aq_str(&pf->hw, last_aq_status));
11971                 goto bw_commit_out;
11972         }
11973
11974         /* Read word 0x10 of NVM - SW compatibility word 1 */
11975         ret = i40e_aq_read_nvm(&pf->hw,
11976                                I40E_SR_NVM_CONTROL_WORD,
11977                                0x10, sizeof(nvm_word), &nvm_word,
11978                                false, NULL);
11979         /* Save off last admin queue command status before releasing
11980          * the NVM
11981          */
11982         last_aq_status = pf->hw.aq.asq_last_status;
11983         i40e_release_nvm(&pf->hw);
11984         if (ret) {
11985                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
11986                          i40e_stat_str(&pf->hw, ret),
11987                          i40e_aq_str(&pf->hw, last_aq_status));
11988                 goto bw_commit_out;
11989         }
11990
11991         /* Wait a bit for NVM release to complete */
11992         msleep(50);
11993
11994         /* Acquire NVM for write access */
11995         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
11996         last_aq_status = pf->hw.aq.asq_last_status;
11997         if (ret) {
11998                 dev_info(&pf->pdev->dev,
11999                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
12000                          i40e_stat_str(&pf->hw, ret),
12001                          i40e_aq_str(&pf->hw, last_aq_status));
12002                 goto bw_commit_out;
12003         }
12004         /* Write it back out unchanged to initiate update NVM,
12005          * which will force a write of the shadow (alt) RAM to
12006          * the NVM - thus storing the bandwidth values permanently.
12007          */
12008         ret = i40e_aq_update_nvm(&pf->hw,
12009                                  I40E_SR_NVM_CONTROL_WORD,
12010                                  0x10, sizeof(nvm_word),
12011                                  &nvm_word, true, 0, NULL);
12012         /* Save off last admin queue command status before releasing
12013          * the NVM
12014          */
12015         last_aq_status = pf->hw.aq.asq_last_status;
12016         i40e_release_nvm(&pf->hw);
12017         if (ret)
12018                 dev_info(&pf->pdev->dev,
12019                          "BW settings NOT SAVED, err %s aq_err %s\n",
12020                          i40e_stat_str(&pf->hw, ret),
12021                          i40e_aq_str(&pf->hw, last_aq_status));
12022 bw_commit_out:
12023
12024         return ret;
12025 }
12026
12027 /**
12028  * i40e_is_total_port_shutdown_enabled - read NVM and return value
12029  * if total port shutdown feature is enabled for this PF
12030  * @pf: board private structure
12031  **/
12032 static bool i40e_is_total_port_shutdown_enabled(struct i40e_pf *pf)
12033 {
12034 #define I40E_TOTAL_PORT_SHUTDOWN_ENABLED        BIT(4)
12035 #define I40E_FEATURES_ENABLE_PTR                0x2A
12036 #define I40E_CURRENT_SETTING_PTR                0x2B
12037 #define I40E_LINK_BEHAVIOR_WORD_OFFSET          0x2D
12038 #define I40E_LINK_BEHAVIOR_WORD_LENGTH          0x1
12039 #define I40E_LINK_BEHAVIOR_OS_FORCED_ENABLED    BIT(0)
12040 #define I40E_LINK_BEHAVIOR_PORT_BIT_LENGTH      4
12041         i40e_status read_status = I40E_SUCCESS;
12042         u16 sr_emp_sr_settings_ptr = 0;
12043         u16 features_enable = 0;
12044         u16 link_behavior = 0;
12045         bool ret = false;
12046
12047         read_status = i40e_read_nvm_word(&pf->hw,
12048                                          I40E_SR_EMP_SR_SETTINGS_PTR,
12049                                          &sr_emp_sr_settings_ptr);
12050         if (read_status)
12051                 goto err_nvm;
12052         read_status = i40e_read_nvm_word(&pf->hw,
12053                                          sr_emp_sr_settings_ptr +
12054                                          I40E_FEATURES_ENABLE_PTR,
12055                                          &features_enable);
12056         if (read_status)
12057                 goto err_nvm;
12058         if (I40E_TOTAL_PORT_SHUTDOWN_ENABLED & features_enable) {
12059                 read_status = i40e_read_nvm_module_data(&pf->hw,
12060                                                         I40E_SR_EMP_SR_SETTINGS_PTR,
12061                                                         I40E_CURRENT_SETTING_PTR,
12062                                                         I40E_LINK_BEHAVIOR_WORD_OFFSET,
12063                                                         I40E_LINK_BEHAVIOR_WORD_LENGTH,
12064                                                         &link_behavior);
12065                 if (read_status)
12066                         goto err_nvm;
12067                 link_behavior >>= (pf->hw.port * I40E_LINK_BEHAVIOR_PORT_BIT_LENGTH);
12068                 ret = I40E_LINK_BEHAVIOR_OS_FORCED_ENABLED & link_behavior;
12069         }
12070         return ret;
12071
12072 err_nvm:
12073         dev_warn(&pf->pdev->dev,
12074                  "total-port-shutdown feature is off due to read nvm error: %s\n",
12075                  i40e_stat_str(&pf->hw, read_status));
12076         return ret;
12077 }
12078
12079 /**
12080  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
12081  * @pf: board private structure to initialize
12082  *
12083  * i40e_sw_init initializes the Adapter private data structure.
12084  * Fields are initialized based on PCI device information and
12085  * OS network device settings (MTU size).
12086  **/
12087 static int i40e_sw_init(struct i40e_pf *pf)
12088 {
12089         int err = 0;
12090         int size;
12091         u16 pow;
12092
12093         /* Set default capability flags */
12094         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
12095                     I40E_FLAG_MSI_ENABLED     |
12096                     I40E_FLAG_MSIX_ENABLED;
12097
12098         /* Set default ITR */
12099         pf->rx_itr_default = I40E_ITR_RX_DEF;
12100         pf->tx_itr_default = I40E_ITR_TX_DEF;
12101
12102         /* Depending on PF configurations, it is possible that the RSS
12103          * maximum might end up larger than the available queues
12104          */
12105         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
12106         pf->alloc_rss_size = 1;
12107         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
12108         pf->rss_size_max = min_t(int, pf->rss_size_max,
12109                                  pf->hw.func_caps.num_tx_qp);
12110
12111         /* find the next higher power-of-2 of num cpus */
12112         pow = roundup_pow_of_two(num_online_cpus());
12113         pf->rss_size_max = min_t(int, pf->rss_size_max, pow);
12114
12115         if (pf->hw.func_caps.rss) {
12116                 pf->flags |= I40E_FLAG_RSS_ENABLED;
12117                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
12118                                            num_online_cpus());
12119         }
12120
12121         /* MFP mode enabled */
12122         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
12123                 pf->flags |= I40E_FLAG_MFP_ENABLED;
12124                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
12125                 if (i40e_get_partition_bw_setting(pf)) {
12126                         dev_warn(&pf->pdev->dev,
12127                                  "Could not get partition bw settings\n");
12128                 } else {
12129                         dev_info(&pf->pdev->dev,
12130                                  "Partition BW Min = %8.8x, Max = %8.8x\n",
12131                                  pf->min_bw, pf->max_bw);
12132
12133                         /* nudge the Tx scheduler */
12134                         i40e_set_partition_bw_setting(pf);
12135                 }
12136         }
12137
12138         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
12139             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
12140                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
12141                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
12142                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
12143                     pf->hw.num_partitions > 1)
12144                         dev_info(&pf->pdev->dev,
12145                                  "Flow Director Sideband mode Disabled in MFP mode\n");
12146                 else
12147                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
12148                 pf->fdir_pf_filter_count =
12149                                  pf->hw.func_caps.fd_filters_guaranteed;
12150                 pf->hw.fdir_shared_filter_count =
12151                                  pf->hw.func_caps.fd_filters_best_effort;
12152         }
12153
12154         if (pf->hw.mac.type == I40E_MAC_X722) {
12155                 pf->hw_features |= (I40E_HW_RSS_AQ_CAPABLE |
12156                                     I40E_HW_128_QP_RSS_CAPABLE |
12157                                     I40E_HW_ATR_EVICT_CAPABLE |
12158                                     I40E_HW_WB_ON_ITR_CAPABLE |
12159                                     I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE |
12160                                     I40E_HW_NO_PCI_LINK_CHECK |
12161                                     I40E_HW_USE_SET_LLDP_MIB |
12162                                     I40E_HW_GENEVE_OFFLOAD_CAPABLE |
12163                                     I40E_HW_PTP_L4_CAPABLE |
12164                                     I40E_HW_WOL_MC_MAGIC_PKT_WAKE |
12165                                     I40E_HW_OUTER_UDP_CSUM_CAPABLE);
12166
12167 #define I40E_FDEVICT_PCTYPE_DEFAULT 0xc03
12168                 if (rd32(&pf->hw, I40E_GLQF_FDEVICTENA(1)) !=
12169                     I40E_FDEVICT_PCTYPE_DEFAULT) {
12170                         dev_warn(&pf->pdev->dev,
12171                                  "FD EVICT PCTYPES are not right, disable FD HW EVICT\n");
12172                         pf->hw_features &= ~I40E_HW_ATR_EVICT_CAPABLE;
12173                 }
12174         } else if ((pf->hw.aq.api_maj_ver > 1) ||
12175                    ((pf->hw.aq.api_maj_ver == 1) &&
12176                     (pf->hw.aq.api_min_ver > 4))) {
12177                 /* Supported in FW API version higher than 1.4 */
12178                 pf->hw_features |= I40E_HW_GENEVE_OFFLOAD_CAPABLE;
12179         }
12180
12181         /* Enable HW ATR eviction if possible */
12182         if (pf->hw_features & I40E_HW_ATR_EVICT_CAPABLE)
12183                 pf->flags |= I40E_FLAG_HW_ATR_EVICT_ENABLED;
12184
12185         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
12186             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
12187             (pf->hw.aq.fw_maj_ver < 4))) {
12188                 pf->hw_features |= I40E_HW_RESTART_AUTONEG;
12189                 /* No DCB support  for FW < v4.33 */
12190                 pf->hw_features |= I40E_HW_NO_DCB_SUPPORT;
12191         }
12192
12193         /* Disable FW LLDP if FW < v4.3 */
12194         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
12195             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
12196             (pf->hw.aq.fw_maj_ver < 4)))
12197                 pf->hw_features |= I40E_HW_STOP_FW_LLDP;
12198
12199         /* Use the FW Set LLDP MIB API if FW > v4.40 */
12200         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
12201             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
12202             (pf->hw.aq.fw_maj_ver >= 5)))
12203                 pf->hw_features |= I40E_HW_USE_SET_LLDP_MIB;
12204
12205         /* Enable PTP L4 if FW > v6.0 */
12206         if (pf->hw.mac.type == I40E_MAC_XL710 &&
12207             pf->hw.aq.fw_maj_ver >= 6)
12208                 pf->hw_features |= I40E_HW_PTP_L4_CAPABLE;
12209
12210         if (pf->hw.func_caps.vmdq && num_online_cpus() != 1) {
12211                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
12212                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
12213                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
12214         }
12215
12216         if (pf->hw.func_caps.iwarp && num_online_cpus() != 1) {
12217                 pf->flags |= I40E_FLAG_IWARP_ENABLED;
12218                 /* IWARP needs one extra vector for CQP just like MISC.*/
12219                 pf->num_iwarp_msix = (int)num_online_cpus() + 1;
12220         }
12221         /* Stopping FW LLDP engine is supported on XL710 and X722
12222          * starting from FW versions determined in i40e_init_adminq.
12223          * Stopping the FW LLDP engine is not supported on XL710
12224          * if NPAR is functioning so unset this hw flag in this case.
12225          */
12226         if (pf->hw.mac.type == I40E_MAC_XL710 &&
12227             pf->hw.func_caps.npar_enable &&
12228             (pf->hw.flags & I40E_HW_FLAG_FW_LLDP_STOPPABLE))
12229                 pf->hw.flags &= ~I40E_HW_FLAG_FW_LLDP_STOPPABLE;
12230
12231 #ifdef CONFIG_PCI_IOV
12232         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
12233                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
12234                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
12235                 pf->num_req_vfs = min_t(int,
12236                                         pf->hw.func_caps.num_vfs,
12237                                         I40E_MAX_VF_COUNT);
12238         }
12239 #endif /* CONFIG_PCI_IOV */
12240         pf->eeprom_version = 0xDEAD;
12241         pf->lan_veb = I40E_NO_VEB;
12242         pf->lan_vsi = I40E_NO_VSI;
12243
12244         /* By default FW has this off for performance reasons */
12245         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
12246
12247         /* set up queue assignment tracking */
12248         size = sizeof(struct i40e_lump_tracking)
12249                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
12250         pf->qp_pile = kzalloc(size, GFP_KERNEL);
12251         if (!pf->qp_pile) {
12252                 err = -ENOMEM;
12253                 goto sw_init_done;
12254         }
12255         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
12256
12257         pf->tx_timeout_recovery_level = 1;
12258
12259         if (pf->hw.mac.type != I40E_MAC_X722 &&
12260             i40e_is_total_port_shutdown_enabled(pf)) {
12261                 /* Link down on close must be on when total port shutdown
12262                  * is enabled for a given port
12263                  */
12264                 pf->flags |= (I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED |
12265                               I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED);
12266                 dev_info(&pf->pdev->dev,
12267                          "total-port-shutdown was enabled, link-down-on-close is forced on\n");
12268         }
12269         mutex_init(&pf->switch_mutex);
12270
12271 sw_init_done:
12272         return err;
12273 }
12274
12275 /**
12276  * i40e_set_ntuple - set the ntuple feature flag and take action
12277  * @pf: board private structure to initialize
12278  * @features: the feature set that the stack is suggesting
12279  *
12280  * returns a bool to indicate if reset needs to happen
12281  **/
12282 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
12283 {
12284         bool need_reset = false;
12285
12286         /* Check if Flow Director n-tuple support was enabled or disabled.  If
12287          * the state changed, we need to reset.
12288          */
12289         if (features & NETIF_F_NTUPLE) {
12290                 /* Enable filters and mark for reset */
12291                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
12292                         need_reset = true;
12293                 /* enable FD_SB only if there is MSI-X vector and no cloud
12294                  * filters exist
12295                  */
12296                 if (pf->num_fdsb_msix > 0 && !pf->num_cloud_filters) {
12297                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
12298                         pf->flags &= ~I40E_FLAG_FD_SB_INACTIVE;
12299                 }
12300         } else {
12301                 /* turn off filters, mark for reset and clear SW filter list */
12302                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
12303                         need_reset = true;
12304                         i40e_fdir_filter_exit(pf);
12305                 }
12306                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
12307                 clear_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state);
12308                 pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
12309
12310                 /* reset fd counters */
12311                 pf->fd_add_err = 0;
12312                 pf->fd_atr_cnt = 0;
12313                 /* if ATR was auto disabled it can be re-enabled. */
12314                 if (test_and_clear_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state))
12315                         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
12316                             (I40E_DEBUG_FD & pf->hw.debug_mask))
12317                                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
12318         }
12319         return need_reset;
12320 }
12321
12322 /**
12323  * i40e_clear_rss_lut - clear the rx hash lookup table
12324  * @vsi: the VSI being configured
12325  **/
12326 static void i40e_clear_rss_lut(struct i40e_vsi *vsi)
12327 {
12328         struct i40e_pf *pf = vsi->back;
12329         struct i40e_hw *hw = &pf->hw;
12330         u16 vf_id = vsi->vf_id;
12331         u8 i;
12332
12333         if (vsi->type == I40E_VSI_MAIN) {
12334                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
12335                         wr32(hw, I40E_PFQF_HLUT(i), 0);
12336         } else if (vsi->type == I40E_VSI_SRIOV) {
12337                 for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
12338                         i40e_write_rx_ctl(hw, I40E_VFQF_HLUT1(i, vf_id), 0);
12339         } else {
12340                 dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
12341         }
12342 }
12343
12344 /**
12345  * i40e_set_features - set the netdev feature flags
12346  * @netdev: ptr to the netdev being adjusted
12347  * @features: the feature set that the stack is suggesting
12348  * Note: expects to be called while under rtnl_lock()
12349  **/
12350 static int i40e_set_features(struct net_device *netdev,
12351                              netdev_features_t features)
12352 {
12353         struct i40e_netdev_priv *np = netdev_priv(netdev);
12354         struct i40e_vsi *vsi = np->vsi;
12355         struct i40e_pf *pf = vsi->back;
12356         bool need_reset;
12357
12358         if (features & NETIF_F_RXHASH && !(netdev->features & NETIF_F_RXHASH))
12359                 i40e_pf_config_rss(pf);
12360         else if (!(features & NETIF_F_RXHASH) &&
12361                  netdev->features & NETIF_F_RXHASH)
12362                 i40e_clear_rss_lut(vsi);
12363
12364         if (features & NETIF_F_HW_VLAN_CTAG_RX)
12365                 i40e_vlan_stripping_enable(vsi);
12366         else
12367                 i40e_vlan_stripping_disable(vsi);
12368
12369         if (!(features & NETIF_F_HW_TC) && pf->num_cloud_filters) {
12370                 dev_err(&pf->pdev->dev,
12371                         "Offloaded tc filters active, can't turn hw_tc_offload off");
12372                 return -EINVAL;
12373         }
12374
12375         if (!(features & NETIF_F_HW_L2FW_DOFFLOAD) && vsi->macvlan_cnt)
12376                 i40e_del_all_macvlans(vsi);
12377
12378         need_reset = i40e_set_ntuple(pf, features);
12379
12380         if (need_reset)
12381                 i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
12382
12383         return 0;
12384 }
12385
12386 static int i40e_udp_tunnel_set_port(struct net_device *netdev,
12387                                     unsigned int table, unsigned int idx,
12388                                     struct udp_tunnel_info *ti)
12389 {
12390         struct i40e_netdev_priv *np = netdev_priv(netdev);
12391         struct i40e_hw *hw = &np->vsi->back->hw;
12392         u8 type, filter_index;
12393         i40e_status ret;
12394
12395         type = ti->type == UDP_TUNNEL_TYPE_VXLAN ? I40E_AQC_TUNNEL_TYPE_VXLAN :
12396                                                    I40E_AQC_TUNNEL_TYPE_NGE;
12397
12398         ret = i40e_aq_add_udp_tunnel(hw, ntohs(ti->port), type, &filter_index,
12399                                      NULL);
12400         if (ret) {
12401                 netdev_info(netdev, "add UDP port failed, err %s aq_err %s\n",
12402                             i40e_stat_str(hw, ret),
12403                             i40e_aq_str(hw, hw->aq.asq_last_status));
12404                 return -EIO;
12405         }
12406
12407         udp_tunnel_nic_set_port_priv(netdev, table, idx, filter_index);
12408         return 0;
12409 }
12410
12411 static int i40e_udp_tunnel_unset_port(struct net_device *netdev,
12412                                       unsigned int table, unsigned int idx,
12413                                       struct udp_tunnel_info *ti)
12414 {
12415         struct i40e_netdev_priv *np = netdev_priv(netdev);
12416         struct i40e_hw *hw = &np->vsi->back->hw;
12417         i40e_status ret;
12418
12419         ret = i40e_aq_del_udp_tunnel(hw, ti->hw_priv, NULL);
12420         if (ret) {
12421                 netdev_info(netdev, "delete UDP port failed, err %s aq_err %s\n",
12422                             i40e_stat_str(hw, ret),
12423                             i40e_aq_str(hw, hw->aq.asq_last_status));
12424                 return -EIO;
12425         }
12426
12427         return 0;
12428 }
12429
12430 static int i40e_get_phys_port_id(struct net_device *netdev,
12431                                  struct netdev_phys_item_id *ppid)
12432 {
12433         struct i40e_netdev_priv *np = netdev_priv(netdev);
12434         struct i40e_pf *pf = np->vsi->back;
12435         struct i40e_hw *hw = &pf->hw;
12436
12437         if (!(pf->hw_features & I40E_HW_PORT_ID_VALID))
12438                 return -EOPNOTSUPP;
12439
12440         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
12441         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
12442
12443         return 0;
12444 }
12445
12446 /**
12447  * i40e_ndo_fdb_add - add an entry to the hardware database
12448  * @ndm: the input from the stack
12449  * @tb: pointer to array of nladdr (unused)
12450  * @dev: the net device pointer
12451  * @addr: the MAC address entry being added
12452  * @vid: VLAN ID
12453  * @flags: instructions from stack about fdb operation
12454  * @extack: netlink extended ack, unused currently
12455  */
12456 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
12457                             struct net_device *dev,
12458                             const unsigned char *addr, u16 vid,
12459                             u16 flags,
12460                             struct netlink_ext_ack *extack)
12461 {
12462         struct i40e_netdev_priv *np = netdev_priv(dev);
12463         struct i40e_pf *pf = np->vsi->back;
12464         int err = 0;
12465
12466         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
12467                 return -EOPNOTSUPP;
12468
12469         if (vid) {
12470                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
12471                 return -EINVAL;
12472         }
12473
12474         /* Hardware does not support aging addresses so if a
12475          * ndm_state is given only allow permanent addresses
12476          */
12477         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
12478                 netdev_info(dev, "FDB only supports static addresses\n");
12479                 return -EINVAL;
12480         }
12481
12482         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
12483                 err = dev_uc_add_excl(dev, addr);
12484         else if (is_multicast_ether_addr(addr))
12485                 err = dev_mc_add_excl(dev, addr);
12486         else
12487                 err = -EINVAL;
12488
12489         /* Only return duplicate errors if NLM_F_EXCL is set */
12490         if (err == -EEXIST && !(flags & NLM_F_EXCL))
12491                 err = 0;
12492
12493         return err;
12494 }
12495
12496 /**
12497  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
12498  * @dev: the netdev being configured
12499  * @nlh: RTNL message
12500  * @flags: bridge flags
12501  * @extack: netlink extended ack
12502  *
12503  * Inserts a new hardware bridge if not already created and
12504  * enables the bridging mode requested (VEB or VEPA). If the
12505  * hardware bridge has already been inserted and the request
12506  * is to change the mode then that requires a PF reset to
12507  * allow rebuild of the components with required hardware
12508  * bridge mode enabled.
12509  *
12510  * Note: expects to be called while under rtnl_lock()
12511  **/
12512 static int i40e_ndo_bridge_setlink(struct net_device *dev,
12513                                    struct nlmsghdr *nlh,
12514                                    u16 flags,
12515                                    struct netlink_ext_ack *extack)
12516 {
12517         struct i40e_netdev_priv *np = netdev_priv(dev);
12518         struct i40e_vsi *vsi = np->vsi;
12519         struct i40e_pf *pf = vsi->back;
12520         struct i40e_veb *veb = NULL;
12521         struct nlattr *attr, *br_spec;
12522         int i, rem;
12523
12524         /* Only for PF VSI for now */
12525         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
12526                 return -EOPNOTSUPP;
12527
12528         /* Find the HW bridge for PF VSI */
12529         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
12530                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
12531                         veb = pf->veb[i];
12532         }
12533
12534         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
12535         if (!br_spec)
12536                 return -EINVAL;
12537
12538         nla_for_each_nested(attr, br_spec, rem) {
12539                 __u16 mode;
12540
12541                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
12542                         continue;
12543
12544                 mode = nla_get_u16(attr);
12545                 if ((mode != BRIDGE_MODE_VEPA) &&
12546                     (mode != BRIDGE_MODE_VEB))
12547                         return -EINVAL;
12548
12549                 /* Insert a new HW bridge */
12550                 if (!veb) {
12551                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
12552                                              vsi->tc_config.enabled_tc);
12553                         if (veb) {
12554                                 veb->bridge_mode = mode;
12555                                 i40e_config_bridge_mode(veb);
12556                         } else {
12557                                 /* No Bridge HW offload available */
12558                                 return -ENOENT;
12559                         }
12560                         break;
12561                 } else if (mode != veb->bridge_mode) {
12562                         /* Existing HW bridge but different mode needs reset */
12563                         veb->bridge_mode = mode;
12564                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
12565                         if (mode == BRIDGE_MODE_VEB)
12566                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
12567                         else
12568                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
12569                         i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
12570                         break;
12571                 }
12572         }
12573
12574         return 0;
12575 }
12576
12577 /**
12578  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
12579  * @skb: skb buff
12580  * @pid: process id
12581  * @seq: RTNL message seq #
12582  * @dev: the netdev being configured
12583  * @filter_mask: unused
12584  * @nlflags: netlink flags passed in
12585  *
12586  * Return the mode in which the hardware bridge is operating in
12587  * i.e VEB or VEPA.
12588  **/
12589 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
12590                                    struct net_device *dev,
12591                                    u32 __always_unused filter_mask,
12592                                    int nlflags)
12593 {
12594         struct i40e_netdev_priv *np = netdev_priv(dev);
12595         struct i40e_vsi *vsi = np->vsi;
12596         struct i40e_pf *pf = vsi->back;
12597         struct i40e_veb *veb = NULL;
12598         int i;
12599
12600         /* Only for PF VSI for now */
12601         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
12602                 return -EOPNOTSUPP;
12603
12604         /* Find the HW bridge for the PF VSI */
12605         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
12606                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
12607                         veb = pf->veb[i];
12608         }
12609
12610         if (!veb)
12611                 return 0;
12612
12613         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
12614                                        0, 0, nlflags, filter_mask, NULL);
12615 }
12616
12617 /**
12618  * i40e_features_check - Validate encapsulated packet conforms to limits
12619  * @skb: skb buff
12620  * @dev: This physical port's netdev
12621  * @features: Offload features that the stack believes apply
12622  **/
12623 static netdev_features_t i40e_features_check(struct sk_buff *skb,
12624                                              struct net_device *dev,
12625                                              netdev_features_t features)
12626 {
12627         size_t len;
12628
12629         /* No point in doing any of this if neither checksum nor GSO are
12630          * being requested for this frame.  We can rule out both by just
12631          * checking for CHECKSUM_PARTIAL
12632          */
12633         if (skb->ip_summed != CHECKSUM_PARTIAL)
12634                 return features;
12635
12636         /* We cannot support GSO if the MSS is going to be less than
12637          * 64 bytes.  If it is then we need to drop support for GSO.
12638          */
12639         if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64))
12640                 features &= ~NETIF_F_GSO_MASK;
12641
12642         /* MACLEN can support at most 63 words */
12643         len = skb_network_header(skb) - skb->data;
12644         if (len & ~(63 * 2))
12645                 goto out_err;
12646
12647         /* IPLEN and EIPLEN can support at most 127 dwords */
12648         len = skb_transport_header(skb) - skb_network_header(skb);
12649         if (len & ~(127 * 4))
12650                 goto out_err;
12651
12652         if (skb->encapsulation) {
12653                 /* L4TUNLEN can support 127 words */
12654                 len = skb_inner_network_header(skb) - skb_transport_header(skb);
12655                 if (len & ~(127 * 2))
12656                         goto out_err;
12657
12658                 /* IPLEN can support at most 127 dwords */
12659                 len = skb_inner_transport_header(skb) -
12660                       skb_inner_network_header(skb);
12661                 if (len & ~(127 * 4))
12662                         goto out_err;
12663         }
12664
12665         /* No need to validate L4LEN as TCP is the only protocol with a
12666          * a flexible value and we support all possible values supported
12667          * by TCP, which is at most 15 dwords
12668          */
12669
12670         return features;
12671 out_err:
12672         return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
12673 }
12674
12675 /**
12676  * i40e_xdp_setup - add/remove an XDP program
12677  * @vsi: VSI to changed
12678  * @prog: XDP program
12679  **/
12680 static int i40e_xdp_setup(struct i40e_vsi *vsi,
12681                           struct bpf_prog *prog)
12682 {
12683         int frame_size = vsi->netdev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
12684         struct i40e_pf *pf = vsi->back;
12685         struct bpf_prog *old_prog;
12686         bool need_reset;
12687         int i;
12688
12689         /* Don't allow frames that span over multiple buffers */
12690         if (frame_size > vsi->rx_buf_len)
12691                 return -EINVAL;
12692
12693         if (!i40e_enabled_xdp_vsi(vsi) && !prog)
12694                 return 0;
12695
12696         /* When turning XDP on->off/off->on we reset and rebuild the rings. */
12697         need_reset = (i40e_enabled_xdp_vsi(vsi) != !!prog);
12698
12699         if (need_reset)
12700                 i40e_prep_for_reset(pf, true);
12701
12702         old_prog = xchg(&vsi->xdp_prog, prog);
12703
12704         if (need_reset) {
12705                 if (!prog)
12706                         /* Wait until ndo_xsk_wakeup completes. */
12707                         synchronize_rcu();
12708                 i40e_reset_and_rebuild(pf, true, true);
12709         }
12710
12711         if (!i40e_enabled_xdp_vsi(vsi) && prog) {
12712                 if (i40e_realloc_rx_bi_zc(vsi, true))
12713                         return -ENOMEM;
12714         } else if (i40e_enabled_xdp_vsi(vsi) && !prog) {
12715                 if (i40e_realloc_rx_bi_zc(vsi, false))
12716                         return -ENOMEM;
12717         }
12718
12719         for (i = 0; i < vsi->num_queue_pairs; i++)
12720                 WRITE_ONCE(vsi->rx_rings[i]->xdp_prog, vsi->xdp_prog);
12721
12722         if (old_prog)
12723                 bpf_prog_put(old_prog);
12724
12725         /* Kick start the NAPI context if there is an AF_XDP socket open
12726          * on that queue id. This so that receiving will start.
12727          */
12728         if (need_reset && prog)
12729                 for (i = 0; i < vsi->num_queue_pairs; i++)
12730                         if (vsi->xdp_rings[i]->xsk_pool)
12731                                 (void)i40e_xsk_wakeup(vsi->netdev, i,
12732                                                       XDP_WAKEUP_RX);
12733
12734         return 0;
12735 }
12736
12737 /**
12738  * i40e_enter_busy_conf - Enters busy config state
12739  * @vsi: vsi
12740  *
12741  * Returns 0 on success, <0 for failure.
12742  **/
12743 static int i40e_enter_busy_conf(struct i40e_vsi *vsi)
12744 {
12745         struct i40e_pf *pf = vsi->back;
12746         int timeout = 50;
12747
12748         while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
12749                 timeout--;
12750                 if (!timeout)
12751                         return -EBUSY;
12752                 usleep_range(1000, 2000);
12753         }
12754
12755         return 0;
12756 }
12757
12758 /**
12759  * i40e_exit_busy_conf - Exits busy config state
12760  * @vsi: vsi
12761  **/
12762 static void i40e_exit_busy_conf(struct i40e_vsi *vsi)
12763 {
12764         struct i40e_pf *pf = vsi->back;
12765
12766         clear_bit(__I40E_CONFIG_BUSY, pf->state);
12767 }
12768
12769 /**
12770  * i40e_queue_pair_reset_stats - Resets all statistics for a queue pair
12771  * @vsi: vsi
12772  * @queue_pair: queue pair
12773  **/
12774 static void i40e_queue_pair_reset_stats(struct i40e_vsi *vsi, int queue_pair)
12775 {
12776         memset(&vsi->rx_rings[queue_pair]->rx_stats, 0,
12777                sizeof(vsi->rx_rings[queue_pair]->rx_stats));
12778         memset(&vsi->tx_rings[queue_pair]->stats, 0,
12779                sizeof(vsi->tx_rings[queue_pair]->stats));
12780         if (i40e_enabled_xdp_vsi(vsi)) {
12781                 memset(&vsi->xdp_rings[queue_pair]->stats, 0,
12782                        sizeof(vsi->xdp_rings[queue_pair]->stats));
12783         }
12784 }
12785
12786 /**
12787  * i40e_queue_pair_clean_rings - Cleans all the rings of a queue pair
12788  * @vsi: vsi
12789  * @queue_pair: queue pair
12790  **/
12791 static void i40e_queue_pair_clean_rings(struct i40e_vsi *vsi, int queue_pair)
12792 {
12793         i40e_clean_tx_ring(vsi->tx_rings[queue_pair]);
12794         if (i40e_enabled_xdp_vsi(vsi)) {
12795                 /* Make sure that in-progress ndo_xdp_xmit calls are
12796                  * completed.
12797                  */
12798                 synchronize_rcu();
12799                 i40e_clean_tx_ring(vsi->xdp_rings[queue_pair]);
12800         }
12801         i40e_clean_rx_ring(vsi->rx_rings[queue_pair]);
12802 }
12803
12804 /**
12805  * i40e_queue_pair_toggle_napi - Enables/disables NAPI for a queue pair
12806  * @vsi: vsi
12807  * @queue_pair: queue pair
12808  * @enable: true for enable, false for disable
12809  **/
12810 static void i40e_queue_pair_toggle_napi(struct i40e_vsi *vsi, int queue_pair,
12811                                         bool enable)
12812 {
12813         struct i40e_ring *rxr = vsi->rx_rings[queue_pair];
12814         struct i40e_q_vector *q_vector = rxr->q_vector;
12815
12816         if (!vsi->netdev)
12817                 return;
12818
12819         /* All rings in a qp belong to the same qvector. */
12820         if (q_vector->rx.ring || q_vector->tx.ring) {
12821                 if (enable)
12822                         napi_enable(&q_vector->napi);
12823                 else
12824                         napi_disable(&q_vector->napi);
12825         }
12826 }
12827
12828 /**
12829  * i40e_queue_pair_toggle_rings - Enables/disables all rings for a queue pair
12830  * @vsi: vsi
12831  * @queue_pair: queue pair
12832  * @enable: true for enable, false for disable
12833  *
12834  * Returns 0 on success, <0 on failure.
12835  **/
12836 static int i40e_queue_pair_toggle_rings(struct i40e_vsi *vsi, int queue_pair,
12837                                         bool enable)
12838 {
12839         struct i40e_pf *pf = vsi->back;
12840         int pf_q, ret = 0;
12841
12842         pf_q = vsi->base_queue + queue_pair;
12843         ret = i40e_control_wait_tx_q(vsi->seid, pf, pf_q,
12844                                      false /*is xdp*/, enable);
12845         if (ret) {
12846                 dev_info(&pf->pdev->dev,
12847                          "VSI seid %d Tx ring %d %sable timeout\n",
12848                          vsi->seid, pf_q, (enable ? "en" : "dis"));
12849                 return ret;
12850         }
12851
12852         i40e_control_rx_q(pf, pf_q, enable);
12853         ret = i40e_pf_rxq_wait(pf, pf_q, enable);
12854         if (ret) {
12855                 dev_info(&pf->pdev->dev,
12856                          "VSI seid %d Rx ring %d %sable timeout\n",
12857                          vsi->seid, pf_q, (enable ? "en" : "dis"));
12858                 return ret;
12859         }
12860
12861         /* Due to HW errata, on Rx disable only, the register can
12862          * indicate done before it really is. Needs 50ms to be sure
12863          */
12864         if (!enable)
12865                 mdelay(50);
12866
12867         if (!i40e_enabled_xdp_vsi(vsi))
12868                 return ret;
12869
12870         ret = i40e_control_wait_tx_q(vsi->seid, pf,
12871                                      pf_q + vsi->alloc_queue_pairs,
12872                                      true /*is xdp*/, enable);
12873         if (ret) {
12874                 dev_info(&pf->pdev->dev,
12875                          "VSI seid %d XDP Tx ring %d %sable timeout\n",
12876                          vsi->seid, pf_q, (enable ? "en" : "dis"));
12877         }
12878
12879         return ret;
12880 }
12881
12882 /**
12883  * i40e_queue_pair_enable_irq - Enables interrupts for a queue pair
12884  * @vsi: vsi
12885  * @queue_pair: queue_pair
12886  **/
12887 static void i40e_queue_pair_enable_irq(struct i40e_vsi *vsi, int queue_pair)
12888 {
12889         struct i40e_ring *rxr = vsi->rx_rings[queue_pair];
12890         struct i40e_pf *pf = vsi->back;
12891         struct i40e_hw *hw = &pf->hw;
12892
12893         /* All rings in a qp belong to the same qvector. */
12894         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
12895                 i40e_irq_dynamic_enable(vsi, rxr->q_vector->v_idx);
12896         else
12897                 i40e_irq_dynamic_enable_icr0(pf);
12898
12899         i40e_flush(hw);
12900 }
12901
12902 /**
12903  * i40e_queue_pair_disable_irq - Disables interrupts for a queue pair
12904  * @vsi: vsi
12905  * @queue_pair: queue_pair
12906  **/
12907 static void i40e_queue_pair_disable_irq(struct i40e_vsi *vsi, int queue_pair)
12908 {
12909         struct i40e_ring *rxr = vsi->rx_rings[queue_pair];
12910         struct i40e_pf *pf = vsi->back;
12911         struct i40e_hw *hw = &pf->hw;
12912
12913         /* For simplicity, instead of removing the qp interrupt causes
12914          * from the interrupt linked list, we simply disable the interrupt, and
12915          * leave the list intact.
12916          *
12917          * All rings in a qp belong to the same qvector.
12918          */
12919         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
12920                 u32 intpf = vsi->base_vector + rxr->q_vector->v_idx;
12921
12922                 wr32(hw, I40E_PFINT_DYN_CTLN(intpf - 1), 0);
12923                 i40e_flush(hw);
12924                 synchronize_irq(pf->msix_entries[intpf].vector);
12925         } else {
12926                 /* Legacy and MSI mode - this stops all interrupt handling */
12927                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
12928                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
12929                 i40e_flush(hw);
12930                 synchronize_irq(pf->pdev->irq);
12931         }
12932 }
12933
12934 /**
12935  * i40e_queue_pair_disable - Disables a queue pair
12936  * @vsi: vsi
12937  * @queue_pair: queue pair
12938  *
12939  * Returns 0 on success, <0 on failure.
12940  **/
12941 int i40e_queue_pair_disable(struct i40e_vsi *vsi, int queue_pair)
12942 {
12943         int err;
12944
12945         err = i40e_enter_busy_conf(vsi);
12946         if (err)
12947                 return err;
12948
12949         i40e_queue_pair_disable_irq(vsi, queue_pair);
12950         i40e_queue_pair_toggle_napi(vsi, queue_pair, false /* off */);
12951         err = i40e_queue_pair_toggle_rings(vsi, queue_pair, false /* off */);
12952         i40e_clean_rx_ring(vsi->rx_rings[queue_pair]);
12953         i40e_queue_pair_clean_rings(vsi, queue_pair);
12954         i40e_queue_pair_reset_stats(vsi, queue_pair);
12955
12956         return err;
12957 }
12958
12959 /**
12960  * i40e_queue_pair_enable - Enables a queue pair
12961  * @vsi: vsi
12962  * @queue_pair: queue pair
12963  *
12964  * Returns 0 on success, <0 on failure.
12965  **/
12966 int i40e_queue_pair_enable(struct i40e_vsi *vsi, int queue_pair)
12967 {
12968         int err;
12969
12970         err = i40e_configure_tx_ring(vsi->tx_rings[queue_pair]);
12971         if (err)
12972                 return err;
12973
12974         if (i40e_enabled_xdp_vsi(vsi)) {
12975                 err = i40e_configure_tx_ring(vsi->xdp_rings[queue_pair]);
12976                 if (err)
12977                         return err;
12978         }
12979
12980         err = i40e_configure_rx_ring(vsi->rx_rings[queue_pair]);
12981         if (err)
12982                 return err;
12983
12984         err = i40e_queue_pair_toggle_rings(vsi, queue_pair, true /* on */);
12985         i40e_queue_pair_toggle_napi(vsi, queue_pair, true /* on */);
12986         i40e_queue_pair_enable_irq(vsi, queue_pair);
12987
12988         i40e_exit_busy_conf(vsi);
12989
12990         return err;
12991 }
12992
12993 /**
12994  * i40e_xdp - implements ndo_bpf for i40e
12995  * @dev: netdevice
12996  * @xdp: XDP command
12997  **/
12998 static int i40e_xdp(struct net_device *dev,
12999                     struct netdev_bpf *xdp)
13000 {
13001         struct i40e_netdev_priv *np = netdev_priv(dev);
13002         struct i40e_vsi *vsi = np->vsi;
13003
13004         if (vsi->type != I40E_VSI_MAIN)
13005                 return -EINVAL;
13006
13007         switch (xdp->command) {
13008         case XDP_SETUP_PROG:
13009                 return i40e_xdp_setup(vsi, xdp->prog);
13010         case XDP_SETUP_XSK_POOL:
13011                 return i40e_xsk_pool_setup(vsi, xdp->xsk.pool,
13012                                            xdp->xsk.queue_id);
13013         default:
13014                 return -EINVAL;
13015         }
13016 }
13017
13018 static const struct net_device_ops i40e_netdev_ops = {
13019         .ndo_open               = i40e_open,
13020         .ndo_stop               = i40e_close,
13021         .ndo_start_xmit         = i40e_lan_xmit_frame,
13022         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
13023         .ndo_set_rx_mode        = i40e_set_rx_mode,
13024         .ndo_validate_addr      = eth_validate_addr,
13025         .ndo_set_mac_address    = i40e_set_mac,
13026         .ndo_change_mtu         = i40e_change_mtu,
13027         .ndo_do_ioctl           = i40e_ioctl,
13028         .ndo_tx_timeout         = i40e_tx_timeout,
13029         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
13030         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
13031 #ifdef CONFIG_NET_POLL_CONTROLLER
13032         .ndo_poll_controller    = i40e_netpoll,
13033 #endif
13034         .ndo_setup_tc           = __i40e_setup_tc,
13035         .ndo_select_queue       = i40e_lan_select_queue,
13036         .ndo_set_features       = i40e_set_features,
13037         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
13038         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
13039         .ndo_get_vf_stats       = i40e_get_vf_stats,
13040         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
13041         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
13042         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
13043         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
13044         .ndo_set_vf_trust       = i40e_ndo_set_vf_trust,
13045         .ndo_udp_tunnel_add     = udp_tunnel_nic_add_port,
13046         .ndo_udp_tunnel_del     = udp_tunnel_nic_del_port,
13047         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
13048         .ndo_fdb_add            = i40e_ndo_fdb_add,
13049         .ndo_features_check     = i40e_features_check,
13050         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
13051         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
13052         .ndo_bpf                = i40e_xdp,
13053         .ndo_xdp_xmit           = i40e_xdp_xmit,
13054         .ndo_xsk_wakeup         = i40e_xsk_wakeup,
13055         .ndo_dfwd_add_station   = i40e_fwd_add,
13056         .ndo_dfwd_del_station   = i40e_fwd_del,
13057 };
13058
13059 /**
13060  * i40e_config_netdev - Setup the netdev flags
13061  * @vsi: the VSI being configured
13062  *
13063  * Returns 0 on success, negative value on failure
13064  **/
13065 static int i40e_config_netdev(struct i40e_vsi *vsi)
13066 {
13067         struct i40e_pf *pf = vsi->back;
13068         struct i40e_hw *hw = &pf->hw;
13069         struct i40e_netdev_priv *np;
13070         struct net_device *netdev;
13071         u8 broadcast[ETH_ALEN];
13072         u8 mac_addr[ETH_ALEN];
13073         int etherdev_size;
13074         netdev_features_t hw_enc_features;
13075         netdev_features_t hw_features;
13076
13077         etherdev_size = sizeof(struct i40e_netdev_priv);
13078         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
13079         if (!netdev)
13080                 return -ENOMEM;
13081
13082         vsi->netdev = netdev;
13083         np = netdev_priv(netdev);
13084         np->vsi = vsi;
13085
13086         hw_enc_features = NETIF_F_SG                    |
13087                           NETIF_F_IP_CSUM               |
13088                           NETIF_F_IPV6_CSUM             |
13089                           NETIF_F_HIGHDMA               |
13090                           NETIF_F_SOFT_FEATURES         |
13091                           NETIF_F_TSO                   |
13092                           NETIF_F_TSO_ECN               |
13093                           NETIF_F_TSO6                  |
13094                           NETIF_F_GSO_GRE               |
13095                           NETIF_F_GSO_GRE_CSUM          |
13096                           NETIF_F_GSO_PARTIAL           |
13097                           NETIF_F_GSO_IPXIP4            |
13098                           NETIF_F_GSO_IPXIP6            |
13099                           NETIF_F_GSO_UDP_TUNNEL        |
13100                           NETIF_F_GSO_UDP_TUNNEL_CSUM   |
13101                           NETIF_F_GSO_UDP_L4            |
13102                           NETIF_F_SCTP_CRC              |
13103                           NETIF_F_RXHASH                |
13104                           NETIF_F_RXCSUM                |
13105                           0;
13106
13107         if (!(pf->hw_features & I40E_HW_OUTER_UDP_CSUM_CAPABLE))
13108                 netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
13109
13110         netdev->udp_tunnel_nic_info = &pf->udp_tunnel_nic;
13111
13112         netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
13113
13114         netdev->hw_enc_features |= hw_enc_features;
13115
13116         /* record features VLANs can make use of */
13117         netdev->vlan_features |= hw_enc_features | NETIF_F_TSO_MANGLEID;
13118
13119         /* enable macvlan offloads */
13120         netdev->hw_features |= NETIF_F_HW_L2FW_DOFFLOAD;
13121
13122         hw_features = hw_enc_features           |
13123                       NETIF_F_HW_VLAN_CTAG_TX   |
13124                       NETIF_F_HW_VLAN_CTAG_RX;
13125
13126         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
13127                 hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC;
13128
13129         netdev->hw_features |= hw_features;
13130
13131         netdev->features |= hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
13132         netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
13133
13134         if (vsi->type == I40E_VSI_MAIN) {
13135                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
13136                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
13137                 /* The following steps are necessary for two reasons. First,
13138                  * some older NVM configurations load a default MAC-VLAN
13139                  * filter that will accept any tagged packet, and we want to
13140                  * replace this with a normal filter. Additionally, it is
13141                  * possible our MAC address was provided by the platform using
13142                  * Open Firmware or similar.
13143                  *
13144                  * Thus, we need to remove the default filter and install one
13145                  * specific to the MAC address.
13146                  */
13147                 i40e_rm_default_mac_filter(vsi, mac_addr);
13148                 spin_lock_bh(&vsi->mac_filter_hash_lock);
13149                 i40e_add_mac_filter(vsi, mac_addr);
13150                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
13151         } else {
13152                 /* Relate the VSI_VMDQ name to the VSI_MAIN name. Note that we
13153                  * are still limited by IFNAMSIZ, but we're adding 'v%d\0' to
13154                  * the end, which is 4 bytes long, so force truncation of the
13155                  * original name by IFNAMSIZ - 4
13156                  */
13157                 snprintf(netdev->name, IFNAMSIZ, "%.*sv%%d",
13158                          IFNAMSIZ - 4,
13159                          pf->vsi[pf->lan_vsi]->netdev->name);
13160                 eth_random_addr(mac_addr);
13161
13162                 spin_lock_bh(&vsi->mac_filter_hash_lock);
13163                 i40e_add_mac_filter(vsi, mac_addr);
13164                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
13165         }
13166
13167         /* Add the broadcast filter so that we initially will receive
13168          * broadcast packets. Note that when a new VLAN is first added the
13169          * driver will convert all filters marked I40E_VLAN_ANY into VLAN
13170          * specific filters as part of transitioning into "vlan" operation.
13171          * When more VLANs are added, the driver will copy each existing MAC
13172          * filter and add it for the new VLAN.
13173          *
13174          * Broadcast filters are handled specially by
13175          * i40e_sync_filters_subtask, as the driver must to set the broadcast
13176          * promiscuous bit instead of adding this directly as a MAC/VLAN
13177          * filter. The subtask will update the correct broadcast promiscuous
13178          * bits as VLANs become active or inactive.
13179          */
13180         eth_broadcast_addr(broadcast);
13181         spin_lock_bh(&vsi->mac_filter_hash_lock);
13182         i40e_add_mac_filter(vsi, broadcast);
13183         spin_unlock_bh(&vsi->mac_filter_hash_lock);
13184
13185         ether_addr_copy(netdev->dev_addr, mac_addr);
13186         ether_addr_copy(netdev->perm_addr, mac_addr);
13187
13188         /* i40iw_net_event() reads 16 bytes from neigh->primary_key */
13189         netdev->neigh_priv_len = sizeof(u32) * 4;
13190
13191         netdev->priv_flags |= IFF_UNICAST_FLT;
13192         netdev->priv_flags |= IFF_SUPP_NOFCS;
13193         /* Setup netdev TC information */
13194         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
13195
13196         netdev->netdev_ops = &i40e_netdev_ops;
13197         netdev->watchdog_timeo = 5 * HZ;
13198         i40e_set_ethtool_ops(netdev);
13199
13200         /* MTU range: 68 - 9706 */
13201         netdev->min_mtu = ETH_MIN_MTU;
13202         netdev->max_mtu = I40E_MAX_RXBUFFER - I40E_PACKET_HDR_PAD;
13203
13204         return 0;
13205 }
13206
13207 /**
13208  * i40e_vsi_delete - Delete a VSI from the switch
13209  * @vsi: the VSI being removed
13210  *
13211  * Returns 0 on success, negative value on failure
13212  **/
13213 static void i40e_vsi_delete(struct i40e_vsi *vsi)
13214 {
13215         /* remove default VSI is not allowed */
13216         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
13217                 return;
13218
13219         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
13220 }
13221
13222 /**
13223  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
13224  * @vsi: the VSI being queried
13225  *
13226  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
13227  **/
13228 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
13229 {
13230         struct i40e_veb *veb;
13231         struct i40e_pf *pf = vsi->back;
13232
13233         /* Uplink is not a bridge so default to VEB */
13234         if (vsi->veb_idx >= I40E_MAX_VEB)
13235                 return 1;
13236
13237         veb = pf->veb[vsi->veb_idx];
13238         if (!veb) {
13239                 dev_info(&pf->pdev->dev,
13240                          "There is no veb associated with the bridge\n");
13241                 return -ENOENT;
13242         }
13243
13244         /* Uplink is a bridge in VEPA mode */
13245         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
13246                 return 0;
13247         } else {
13248                 /* Uplink is a bridge in VEB mode */
13249                 return 1;
13250         }
13251
13252         /* VEPA is now default bridge, so return 0 */
13253         return 0;
13254 }
13255
13256 /**
13257  * i40e_add_vsi - Add a VSI to the switch
13258  * @vsi: the VSI being configured
13259  *
13260  * This initializes a VSI context depending on the VSI type to be added and
13261  * passes it down to the add_vsi aq command.
13262  **/
13263 static int i40e_add_vsi(struct i40e_vsi *vsi)
13264 {
13265         int ret = -ENODEV;
13266         struct i40e_pf *pf = vsi->back;
13267         struct i40e_hw *hw = &pf->hw;
13268         struct i40e_vsi_context ctxt;
13269         struct i40e_mac_filter *f;
13270         struct hlist_node *h;
13271         int bkt;
13272
13273         u8 enabled_tc = 0x1; /* TC0 enabled */
13274         int f_count = 0;
13275
13276         memset(&ctxt, 0, sizeof(ctxt));
13277         switch (vsi->type) {
13278         case I40E_VSI_MAIN:
13279                 /* The PF's main VSI is already setup as part of the
13280                  * device initialization, so we'll not bother with
13281                  * the add_vsi call, but we will retrieve the current
13282                  * VSI context.
13283                  */
13284                 ctxt.seid = pf->main_vsi_seid;
13285                 ctxt.pf_num = pf->hw.pf_id;
13286                 ctxt.vf_num = 0;
13287                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
13288                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
13289                 if (ret) {
13290                         dev_info(&pf->pdev->dev,
13291                                  "couldn't get PF vsi config, err %s aq_err %s\n",
13292                                  i40e_stat_str(&pf->hw, ret),
13293                                  i40e_aq_str(&pf->hw,
13294                                              pf->hw.aq.asq_last_status));
13295                         return -ENOENT;
13296                 }
13297                 vsi->info = ctxt.info;
13298                 vsi->info.valid_sections = 0;
13299
13300                 vsi->seid = ctxt.seid;
13301                 vsi->id = ctxt.vsi_number;
13302
13303                 enabled_tc = i40e_pf_get_tc_map(pf);
13304
13305                 /* Source pruning is enabled by default, so the flag is
13306                  * negative logic - if it's set, we need to fiddle with
13307                  * the VSI to disable source pruning.
13308                  */
13309                 if (pf->flags & I40E_FLAG_SOURCE_PRUNING_DISABLED) {
13310                         memset(&ctxt, 0, sizeof(ctxt));
13311                         ctxt.seid = pf->main_vsi_seid;
13312                         ctxt.pf_num = pf->hw.pf_id;
13313                         ctxt.vf_num = 0;
13314                         ctxt.info.valid_sections |=
13315                                      cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
13316                         ctxt.info.switch_id =
13317                                    cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
13318                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
13319                         if (ret) {
13320                                 dev_info(&pf->pdev->dev,
13321                                          "update vsi failed, err %s aq_err %s\n",
13322                                          i40e_stat_str(&pf->hw, ret),
13323                                          i40e_aq_str(&pf->hw,
13324                                                      pf->hw.aq.asq_last_status));
13325                                 ret = -ENOENT;
13326                                 goto err;
13327                         }
13328                 }
13329
13330                 /* MFP mode setup queue map and update VSI */
13331                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
13332                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
13333                         memset(&ctxt, 0, sizeof(ctxt));
13334                         ctxt.seid = pf->main_vsi_seid;
13335                         ctxt.pf_num = pf->hw.pf_id;
13336                         ctxt.vf_num = 0;
13337                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
13338                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
13339                         if (ret) {
13340                                 dev_info(&pf->pdev->dev,
13341                                          "update vsi failed, err %s aq_err %s\n",
13342                                          i40e_stat_str(&pf->hw, ret),
13343                                          i40e_aq_str(&pf->hw,
13344                                                     pf->hw.aq.asq_last_status));
13345                                 ret = -ENOENT;
13346                                 goto err;
13347                         }
13348                         /* update the local VSI info queue map */
13349                         i40e_vsi_update_queue_map(vsi, &ctxt);
13350                         vsi->info.valid_sections = 0;
13351                 } else {
13352                         /* Default/Main VSI is only enabled for TC0
13353                          * reconfigure it to enable all TCs that are
13354                          * available on the port in SFP mode.
13355                          * For MFP case the iSCSI PF would use this
13356                          * flow to enable LAN+iSCSI TC.
13357                          */
13358                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
13359                         if (ret) {
13360                                 /* Single TC condition is not fatal,
13361                                  * message and continue
13362                                  */
13363                                 dev_info(&pf->pdev->dev,
13364                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
13365                                          enabled_tc,
13366                                          i40e_stat_str(&pf->hw, ret),
13367                                          i40e_aq_str(&pf->hw,
13368                                                     pf->hw.aq.asq_last_status));
13369                         }
13370                 }
13371                 break;
13372
13373         case I40E_VSI_FDIR:
13374                 ctxt.pf_num = hw->pf_id;
13375                 ctxt.vf_num = 0;
13376                 ctxt.uplink_seid = vsi->uplink_seid;
13377                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
13378                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
13379                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
13380                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
13381                         ctxt.info.valid_sections |=
13382                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
13383                         ctxt.info.switch_id =
13384                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
13385                 }
13386                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
13387                 break;
13388
13389         case I40E_VSI_VMDQ2:
13390                 ctxt.pf_num = hw->pf_id;
13391                 ctxt.vf_num = 0;
13392                 ctxt.uplink_seid = vsi->uplink_seid;
13393                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
13394                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
13395
13396                 /* This VSI is connected to VEB so the switch_id
13397                  * should be set to zero by default.
13398                  */
13399                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
13400                         ctxt.info.valid_sections |=
13401                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
13402                         ctxt.info.switch_id =
13403                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
13404                 }
13405
13406                 /* Setup the VSI tx/rx queue map for TC0 only for now */
13407                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
13408                 break;
13409
13410         case I40E_VSI_SRIOV:
13411                 ctxt.pf_num = hw->pf_id;
13412                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
13413                 ctxt.uplink_seid = vsi->uplink_seid;
13414                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
13415                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
13416
13417                 /* This VSI is connected to VEB so the switch_id
13418                  * should be set to zero by default.
13419                  */
13420                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
13421                         ctxt.info.valid_sections |=
13422                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
13423                         ctxt.info.switch_id =
13424                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
13425                 }
13426
13427                 if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
13428                         ctxt.info.valid_sections |=
13429                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
13430                         ctxt.info.queueing_opt_flags |=
13431                                 (I40E_AQ_VSI_QUE_OPT_TCP_ENA |
13432                                  I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
13433                 }
13434
13435                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
13436                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
13437                 if (pf->vf[vsi->vf_id].spoofchk) {
13438                         ctxt.info.valid_sections |=
13439                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
13440                         ctxt.info.sec_flags |=
13441                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
13442                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
13443                 }
13444                 /* Setup the VSI tx/rx queue map for TC0 only for now */
13445                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
13446                 break;
13447
13448         case I40E_VSI_IWARP:
13449                 /* send down message to iWARP */
13450                 break;
13451
13452         default:
13453                 return -ENODEV;
13454         }
13455
13456         if (vsi->type != I40E_VSI_MAIN) {
13457                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
13458                 if (ret) {
13459                         dev_info(&vsi->back->pdev->dev,
13460                                  "add vsi failed, err %s aq_err %s\n",
13461                                  i40e_stat_str(&pf->hw, ret),
13462                                  i40e_aq_str(&pf->hw,
13463                                              pf->hw.aq.asq_last_status));
13464                         ret = -ENOENT;
13465                         goto err;
13466                 }
13467                 vsi->info = ctxt.info;
13468                 vsi->info.valid_sections = 0;
13469                 vsi->seid = ctxt.seid;
13470                 vsi->id = ctxt.vsi_number;
13471         }
13472
13473         spin_lock_bh(&vsi->mac_filter_hash_lock);
13474         vsi->active_filters = 0;
13475         /* If macvlan filters already exist, force them to get loaded */
13476         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
13477                 f->state = I40E_FILTER_NEW;
13478                 f_count++;
13479         }
13480         spin_unlock_bh(&vsi->mac_filter_hash_lock);
13481         clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
13482
13483         if (f_count) {
13484                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
13485                 set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
13486         }
13487
13488         /* Update VSI BW information */
13489         ret = i40e_vsi_get_bw_info(vsi);
13490         if (ret) {
13491                 dev_info(&pf->pdev->dev,
13492                          "couldn't get vsi bw info, err %s aq_err %s\n",
13493                          i40e_stat_str(&pf->hw, ret),
13494                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
13495                 /* VSI is already added so not tearing that up */
13496                 ret = 0;
13497         }
13498
13499 err:
13500         return ret;
13501 }
13502
13503 /**
13504  * i40e_vsi_release - Delete a VSI and free its resources
13505  * @vsi: the VSI being removed
13506  *
13507  * Returns 0 on success or < 0 on error
13508  **/
13509 int i40e_vsi_release(struct i40e_vsi *vsi)
13510 {
13511         struct i40e_mac_filter *f;
13512         struct hlist_node *h;
13513         struct i40e_veb *veb = NULL;
13514         struct i40e_pf *pf;
13515         u16 uplink_seid;
13516         int i, n, bkt;
13517
13518         pf = vsi->back;
13519
13520         /* release of a VEB-owner or last VSI is not allowed */
13521         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
13522                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
13523                          vsi->seid, vsi->uplink_seid);
13524                 return -ENODEV;
13525         }
13526         if (vsi == pf->vsi[pf->lan_vsi] &&
13527             !test_bit(__I40E_DOWN, pf->state)) {
13528                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
13529                 return -ENODEV;
13530         }
13531         set_bit(__I40E_VSI_RELEASING, vsi->state);
13532         uplink_seid = vsi->uplink_seid;
13533         if (vsi->type != I40E_VSI_SRIOV) {
13534                 if (vsi->netdev_registered) {
13535                         vsi->netdev_registered = false;
13536                         if (vsi->netdev) {
13537                                 /* results in a call to i40e_close() */
13538                                 unregister_netdev(vsi->netdev);
13539                         }
13540                 } else {
13541                         i40e_vsi_close(vsi);
13542                 }
13543                 i40e_vsi_disable_irq(vsi);
13544         }
13545
13546         spin_lock_bh(&vsi->mac_filter_hash_lock);
13547
13548         /* clear the sync flag on all filters */
13549         if (vsi->netdev) {
13550                 __dev_uc_unsync(vsi->netdev, NULL);
13551                 __dev_mc_unsync(vsi->netdev, NULL);
13552         }
13553
13554         /* make sure any remaining filters are marked for deletion */
13555         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
13556                 __i40e_del_filter(vsi, f);
13557
13558         spin_unlock_bh(&vsi->mac_filter_hash_lock);
13559
13560         i40e_sync_vsi_filters(vsi);
13561
13562         i40e_vsi_delete(vsi);
13563         i40e_vsi_free_q_vectors(vsi);
13564         if (vsi->netdev) {
13565                 free_netdev(vsi->netdev);
13566                 vsi->netdev = NULL;
13567         }
13568         i40e_vsi_clear_rings(vsi);
13569         i40e_vsi_clear(vsi);
13570
13571         /* If this was the last thing on the VEB, except for the
13572          * controlling VSI, remove the VEB, which puts the controlling
13573          * VSI onto the next level down in the switch.
13574          *
13575          * Well, okay, there's one more exception here: don't remove
13576          * the orphan VEBs yet.  We'll wait for an explicit remove request
13577          * from up the network stack.
13578          */
13579         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
13580                 if (pf->vsi[i] &&
13581                     pf->vsi[i]->uplink_seid == uplink_seid &&
13582                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
13583                         n++;      /* count the VSIs */
13584                 }
13585         }
13586         for (i = 0; i < I40E_MAX_VEB; i++) {
13587                 if (!pf->veb[i])
13588                         continue;
13589                 if (pf->veb[i]->uplink_seid == uplink_seid)
13590                         n++;     /* count the VEBs */
13591                 if (pf->veb[i]->seid == uplink_seid)
13592                         veb = pf->veb[i];
13593         }
13594         if (n == 0 && veb && veb->uplink_seid != 0)
13595                 i40e_veb_release(veb);
13596
13597         return 0;
13598 }
13599
13600 /**
13601  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
13602  * @vsi: ptr to the VSI
13603  *
13604  * This should only be called after i40e_vsi_mem_alloc() which allocates the
13605  * corresponding SW VSI structure and initializes num_queue_pairs for the
13606  * newly allocated VSI.
13607  *
13608  * Returns 0 on success or negative on failure
13609  **/
13610 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
13611 {
13612         int ret = -ENOENT;
13613         struct i40e_pf *pf = vsi->back;
13614
13615         if (vsi->q_vectors[0]) {
13616                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
13617                          vsi->seid);
13618                 return -EEXIST;
13619         }
13620
13621         if (vsi->base_vector) {
13622                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
13623                          vsi->seid, vsi->base_vector);
13624                 return -EEXIST;
13625         }
13626
13627         ret = i40e_vsi_alloc_q_vectors(vsi);
13628         if (ret) {
13629                 dev_info(&pf->pdev->dev,
13630                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
13631                          vsi->num_q_vectors, vsi->seid, ret);
13632                 vsi->num_q_vectors = 0;
13633                 goto vector_setup_out;
13634         }
13635
13636         /* In Legacy mode, we do not have to get any other vector since we
13637          * piggyback on the misc/ICR0 for queue interrupts.
13638         */
13639         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
13640                 return ret;
13641         if (vsi->num_q_vectors)
13642                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
13643                                                  vsi->num_q_vectors, vsi->idx);
13644         if (vsi->base_vector < 0) {
13645                 dev_info(&pf->pdev->dev,
13646                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
13647                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
13648                 i40e_vsi_free_q_vectors(vsi);
13649                 ret = -ENOENT;
13650                 goto vector_setup_out;
13651         }
13652
13653 vector_setup_out:
13654         return ret;
13655 }
13656
13657 /**
13658  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
13659  * @vsi: pointer to the vsi.
13660  *
13661  * This re-allocates a vsi's queue resources.
13662  *
13663  * Returns pointer to the successfully allocated and configured VSI sw struct
13664  * on success, otherwise returns NULL on failure.
13665  **/
13666 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
13667 {
13668         u16 alloc_queue_pairs;
13669         struct i40e_pf *pf;
13670         u8 enabled_tc;
13671         int ret;
13672
13673         if (!vsi)
13674                 return NULL;
13675
13676         pf = vsi->back;
13677
13678         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
13679         i40e_vsi_clear_rings(vsi);
13680
13681         i40e_vsi_free_arrays(vsi, false);
13682         i40e_set_num_rings_in_vsi(vsi);
13683         ret = i40e_vsi_alloc_arrays(vsi, false);
13684         if (ret)
13685                 goto err_vsi;
13686
13687         alloc_queue_pairs = vsi->alloc_queue_pairs *
13688                             (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
13689
13690         ret = i40e_get_lump(pf, pf->qp_pile, alloc_queue_pairs, vsi->idx);
13691         if (ret < 0) {
13692                 dev_info(&pf->pdev->dev,
13693                          "failed to get tracking for %d queues for VSI %d err %d\n",
13694                          alloc_queue_pairs, vsi->seid, ret);
13695                 goto err_vsi;
13696         }
13697         vsi->base_queue = ret;
13698
13699         /* Update the FW view of the VSI. Force a reset of TC and queue
13700          * layout configurations.
13701          */
13702         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
13703         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
13704         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
13705         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
13706         if (vsi->type == I40E_VSI_MAIN)
13707                 i40e_rm_default_mac_filter(vsi, pf->hw.mac.perm_addr);
13708
13709         /* assign it some queues */
13710         ret = i40e_alloc_rings(vsi);
13711         if (ret)
13712                 goto err_rings;
13713
13714         /* map all of the rings to the q_vectors */
13715         i40e_vsi_map_rings_to_vectors(vsi);
13716         return vsi;
13717
13718 err_rings:
13719         i40e_vsi_free_q_vectors(vsi);
13720         if (vsi->netdev_registered) {
13721                 vsi->netdev_registered = false;
13722                 unregister_netdev(vsi->netdev);
13723                 free_netdev(vsi->netdev);
13724                 vsi->netdev = NULL;
13725         }
13726         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
13727 err_vsi:
13728         i40e_vsi_clear(vsi);
13729         return NULL;
13730 }
13731
13732 /**
13733  * i40e_vsi_setup - Set up a VSI by a given type
13734  * @pf: board private structure
13735  * @type: VSI type
13736  * @uplink_seid: the switch element to link to
13737  * @param1: usage depends upon VSI type. For VF types, indicates VF id
13738  *
13739  * This allocates the sw VSI structure and its queue resources, then add a VSI
13740  * to the identified VEB.
13741  *
13742  * Returns pointer to the successfully allocated and configure VSI sw struct on
13743  * success, otherwise returns NULL on failure.
13744  **/
13745 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
13746                                 u16 uplink_seid, u32 param1)
13747 {
13748         struct i40e_vsi *vsi = NULL;
13749         struct i40e_veb *veb = NULL;
13750         u16 alloc_queue_pairs;
13751         int ret, i;
13752         int v_idx;
13753
13754         /* The requested uplink_seid must be either
13755          *     - the PF's port seid
13756          *              no VEB is needed because this is the PF
13757          *              or this is a Flow Director special case VSI
13758          *     - seid of an existing VEB
13759          *     - seid of a VSI that owns an existing VEB
13760          *     - seid of a VSI that doesn't own a VEB
13761          *              a new VEB is created and the VSI becomes the owner
13762          *     - seid of the PF VSI, which is what creates the first VEB
13763          *              this is a special case of the previous
13764          *
13765          * Find which uplink_seid we were given and create a new VEB if needed
13766          */
13767         for (i = 0; i < I40E_MAX_VEB; i++) {
13768                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
13769                         veb = pf->veb[i];
13770                         break;
13771                 }
13772         }
13773
13774         if (!veb && uplink_seid != pf->mac_seid) {
13775
13776                 for (i = 0; i < pf->num_alloc_vsi; i++) {
13777                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
13778                                 vsi = pf->vsi[i];
13779                                 break;
13780                         }
13781                 }
13782                 if (!vsi) {
13783                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
13784                                  uplink_seid);
13785                         return NULL;
13786                 }
13787
13788                 if (vsi->uplink_seid == pf->mac_seid)
13789                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
13790                                              vsi->tc_config.enabled_tc);
13791                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
13792                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
13793                                              vsi->tc_config.enabled_tc);
13794                 if (veb) {
13795                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
13796                                 dev_info(&vsi->back->pdev->dev,
13797                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
13798                                 return NULL;
13799                         }
13800                         /* We come up by default in VEPA mode if SRIOV is not
13801                          * already enabled, in which case we can't force VEPA
13802                          * mode.
13803                          */
13804                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
13805                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
13806                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
13807                         }
13808                         i40e_config_bridge_mode(veb);
13809                 }
13810                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
13811                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
13812                                 veb = pf->veb[i];
13813                 }
13814                 if (!veb) {
13815                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
13816                         return NULL;
13817                 }
13818
13819                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
13820                 uplink_seid = veb->seid;
13821         }
13822
13823         /* get vsi sw struct */
13824         v_idx = i40e_vsi_mem_alloc(pf, type);
13825         if (v_idx < 0)
13826                 goto err_alloc;
13827         vsi = pf->vsi[v_idx];
13828         if (!vsi)
13829                 goto err_alloc;
13830         vsi->type = type;
13831         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
13832
13833         if (type == I40E_VSI_MAIN)
13834                 pf->lan_vsi = v_idx;
13835         else if (type == I40E_VSI_SRIOV)
13836                 vsi->vf_id = param1;
13837         /* assign it some queues */
13838         alloc_queue_pairs = vsi->alloc_queue_pairs *
13839                             (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
13840
13841         ret = i40e_get_lump(pf, pf->qp_pile, alloc_queue_pairs, vsi->idx);
13842         if (ret < 0) {
13843                 dev_info(&pf->pdev->dev,
13844                          "failed to get tracking for %d queues for VSI %d err=%d\n",
13845                          alloc_queue_pairs, vsi->seid, ret);
13846                 goto err_vsi;
13847         }
13848         vsi->base_queue = ret;
13849
13850         /* get a VSI from the hardware */
13851         vsi->uplink_seid = uplink_seid;
13852         ret = i40e_add_vsi(vsi);
13853         if (ret)
13854                 goto err_vsi;
13855
13856         switch (vsi->type) {
13857         /* setup the netdev if needed */
13858         case I40E_VSI_MAIN:
13859         case I40E_VSI_VMDQ2:
13860                 ret = i40e_config_netdev(vsi);
13861                 if (ret)
13862                         goto err_netdev;
13863                 ret = i40e_netif_set_realnum_tx_rx_queues(vsi);
13864                 if (ret)
13865                         goto err_netdev;
13866                 ret = register_netdev(vsi->netdev);
13867                 if (ret)
13868                         goto err_netdev;
13869                 vsi->netdev_registered = true;
13870                 netif_carrier_off(vsi->netdev);
13871 #ifdef CONFIG_I40E_DCB
13872                 /* Setup DCB netlink interface */
13873                 i40e_dcbnl_setup(vsi);
13874 #endif /* CONFIG_I40E_DCB */
13875                 fallthrough;
13876         case I40E_VSI_FDIR:
13877                 /* set up vectors and rings if needed */
13878                 ret = i40e_vsi_setup_vectors(vsi);
13879                 if (ret)
13880                         goto err_msix;
13881
13882                 ret = i40e_alloc_rings(vsi);
13883                 if (ret)
13884                         goto err_rings;
13885
13886                 /* map all of the rings to the q_vectors */
13887                 i40e_vsi_map_rings_to_vectors(vsi);
13888
13889                 i40e_vsi_reset_stats(vsi);
13890                 break;
13891         default:
13892                 /* no netdev or rings for the other VSI types */
13893                 break;
13894         }
13895
13896         if ((pf->hw_features & I40E_HW_RSS_AQ_CAPABLE) &&
13897             (vsi->type == I40E_VSI_VMDQ2)) {
13898                 ret = i40e_vsi_config_rss(vsi);
13899         }
13900         return vsi;
13901
13902 err_rings:
13903         i40e_vsi_free_q_vectors(vsi);
13904 err_msix:
13905         if (vsi->netdev_registered) {
13906                 vsi->netdev_registered = false;
13907                 unregister_netdev(vsi->netdev);
13908                 free_netdev(vsi->netdev);
13909                 vsi->netdev = NULL;
13910         }
13911 err_netdev:
13912         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
13913 err_vsi:
13914         i40e_vsi_clear(vsi);
13915 err_alloc:
13916         return NULL;
13917 }
13918
13919 /**
13920  * i40e_veb_get_bw_info - Query VEB BW information
13921  * @veb: the veb to query
13922  *
13923  * Query the Tx scheduler BW configuration data for given VEB
13924  **/
13925 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
13926 {
13927         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
13928         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
13929         struct i40e_pf *pf = veb->pf;
13930         struct i40e_hw *hw = &pf->hw;
13931         u32 tc_bw_max;
13932         int ret = 0;
13933         int i;
13934
13935         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
13936                                                   &bw_data, NULL);
13937         if (ret) {
13938                 dev_info(&pf->pdev->dev,
13939                          "query veb bw config failed, err %s aq_err %s\n",
13940                          i40e_stat_str(&pf->hw, ret),
13941                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
13942                 goto out;
13943         }
13944
13945         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
13946                                                    &ets_data, NULL);
13947         if (ret) {
13948                 dev_info(&pf->pdev->dev,
13949                          "query veb bw ets config failed, err %s aq_err %s\n",
13950                          i40e_stat_str(&pf->hw, ret),
13951                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
13952                 goto out;
13953         }
13954
13955         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
13956         veb->bw_max_quanta = ets_data.tc_bw_max;
13957         veb->is_abs_credits = bw_data.absolute_credits_enable;
13958         veb->enabled_tc = ets_data.tc_valid_bits;
13959         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
13960                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
13961         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
13962                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
13963                 veb->bw_tc_limit_credits[i] =
13964                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
13965                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
13966         }
13967
13968 out:
13969         return ret;
13970 }
13971
13972 /**
13973  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
13974  * @pf: board private structure
13975  *
13976  * On error: returns error code (negative)
13977  * On success: returns vsi index in PF (positive)
13978  **/
13979 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
13980 {
13981         int ret = -ENOENT;
13982         struct i40e_veb *veb;
13983         int i;
13984
13985         /* Need to protect the allocation of switch elements at the PF level */
13986         mutex_lock(&pf->switch_mutex);
13987
13988         /* VEB list may be fragmented if VEB creation/destruction has
13989          * been happening.  We can afford to do a quick scan to look
13990          * for any free slots in the list.
13991          *
13992          * find next empty veb slot, looping back around if necessary
13993          */
13994         i = 0;
13995         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
13996                 i++;
13997         if (i >= I40E_MAX_VEB) {
13998                 ret = -ENOMEM;
13999                 goto err_alloc_veb;  /* out of VEB slots! */
14000         }
14001
14002         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
14003         if (!veb) {
14004                 ret = -ENOMEM;
14005                 goto err_alloc_veb;
14006         }
14007         veb->pf = pf;
14008         veb->idx = i;
14009         veb->enabled_tc = 1;
14010
14011         pf->veb[i] = veb;
14012         ret = i;
14013 err_alloc_veb:
14014         mutex_unlock(&pf->switch_mutex);
14015         return ret;
14016 }
14017
14018 /**
14019  * i40e_switch_branch_release - Delete a branch of the switch tree
14020  * @branch: where to start deleting
14021  *
14022  * This uses recursion to find the tips of the branch to be
14023  * removed, deleting until we get back to and can delete this VEB.
14024  **/
14025 static void i40e_switch_branch_release(struct i40e_veb *branch)
14026 {
14027         struct i40e_pf *pf = branch->pf;
14028         u16 branch_seid = branch->seid;
14029         u16 veb_idx = branch->idx;
14030         int i;
14031
14032         /* release any VEBs on this VEB - RECURSION */
14033         for (i = 0; i < I40E_MAX_VEB; i++) {
14034                 if (!pf->veb[i])
14035                         continue;
14036                 if (pf->veb[i]->uplink_seid == branch->seid)
14037                         i40e_switch_branch_release(pf->veb[i]);
14038         }
14039
14040         /* Release the VSIs on this VEB, but not the owner VSI.
14041          *
14042          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
14043          *       the VEB itself, so don't use (*branch) after this loop.
14044          */
14045         for (i = 0; i < pf->num_alloc_vsi; i++) {
14046                 if (!pf->vsi[i])
14047                         continue;
14048                 if (pf->vsi[i]->uplink_seid == branch_seid &&
14049                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
14050                         i40e_vsi_release(pf->vsi[i]);
14051                 }
14052         }
14053
14054         /* There's one corner case where the VEB might not have been
14055          * removed, so double check it here and remove it if needed.
14056          * This case happens if the veb was created from the debugfs
14057          * commands and no VSIs were added to it.
14058          */
14059         if (pf->veb[veb_idx])
14060                 i40e_veb_release(pf->veb[veb_idx]);
14061 }
14062
14063 /**
14064  * i40e_veb_clear - remove veb struct
14065  * @veb: the veb to remove
14066  **/
14067 static void i40e_veb_clear(struct i40e_veb *veb)
14068 {
14069         if (!veb)
14070                 return;
14071
14072         if (veb->pf) {
14073                 struct i40e_pf *pf = veb->pf;
14074
14075                 mutex_lock(&pf->switch_mutex);
14076                 if (pf->veb[veb->idx] == veb)
14077                         pf->veb[veb->idx] = NULL;
14078                 mutex_unlock(&pf->switch_mutex);
14079         }
14080
14081         kfree(veb);
14082 }
14083
14084 /**
14085  * i40e_veb_release - Delete a VEB and free its resources
14086  * @veb: the VEB being removed
14087  **/
14088 void i40e_veb_release(struct i40e_veb *veb)
14089 {
14090         struct i40e_vsi *vsi = NULL;
14091         struct i40e_pf *pf;
14092         int i, n = 0;
14093
14094         pf = veb->pf;
14095
14096         /* find the remaining VSI and check for extras */
14097         for (i = 0; i < pf->num_alloc_vsi; i++) {
14098                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
14099                         n++;
14100                         vsi = pf->vsi[i];
14101                 }
14102         }
14103         if (n != 1) {
14104                 dev_info(&pf->pdev->dev,
14105                          "can't remove VEB %d with %d VSIs left\n",
14106                          veb->seid, n);
14107                 return;
14108         }
14109
14110         /* move the remaining VSI to uplink veb */
14111         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
14112         if (veb->uplink_seid) {
14113                 vsi->uplink_seid = veb->uplink_seid;
14114                 if (veb->uplink_seid == pf->mac_seid)
14115                         vsi->veb_idx = I40E_NO_VEB;
14116                 else
14117                         vsi->veb_idx = veb->veb_idx;
14118         } else {
14119                 /* floating VEB */
14120                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
14121                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
14122         }
14123
14124         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
14125         i40e_veb_clear(veb);
14126 }
14127
14128 /**
14129  * i40e_add_veb - create the VEB in the switch
14130  * @veb: the VEB to be instantiated
14131  * @vsi: the controlling VSI
14132  **/
14133 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
14134 {
14135         struct i40e_pf *pf = veb->pf;
14136         bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
14137         int ret;
14138
14139         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
14140                               veb->enabled_tc, false,
14141                               &veb->seid, enable_stats, NULL);
14142
14143         /* get a VEB from the hardware */
14144         if (ret) {
14145                 dev_info(&pf->pdev->dev,
14146                          "couldn't add VEB, err %s aq_err %s\n",
14147                          i40e_stat_str(&pf->hw, ret),
14148                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
14149                 return -EPERM;
14150         }
14151
14152         /* get statistics counter */
14153         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
14154                                          &veb->stats_idx, NULL, NULL, NULL);
14155         if (ret) {
14156                 dev_info(&pf->pdev->dev,
14157                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
14158                          i40e_stat_str(&pf->hw, ret),
14159                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
14160                 return -EPERM;
14161         }
14162         ret = i40e_veb_get_bw_info(veb);
14163         if (ret) {
14164                 dev_info(&pf->pdev->dev,
14165                          "couldn't get VEB bw info, err %s aq_err %s\n",
14166                          i40e_stat_str(&pf->hw, ret),
14167                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
14168                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
14169                 return -ENOENT;
14170         }
14171
14172         vsi->uplink_seid = veb->seid;
14173         vsi->veb_idx = veb->idx;
14174         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
14175
14176         return 0;
14177 }
14178
14179 /**
14180  * i40e_veb_setup - Set up a VEB
14181  * @pf: board private structure
14182  * @flags: VEB setup flags
14183  * @uplink_seid: the switch element to link to
14184  * @vsi_seid: the initial VSI seid
14185  * @enabled_tc: Enabled TC bit-map
14186  *
14187  * This allocates the sw VEB structure and links it into the switch
14188  * It is possible and legal for this to be a duplicate of an already
14189  * existing VEB.  It is also possible for both uplink and vsi seids
14190  * to be zero, in order to create a floating VEB.
14191  *
14192  * Returns pointer to the successfully allocated VEB sw struct on
14193  * success, otherwise returns NULL on failure.
14194  **/
14195 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
14196                                 u16 uplink_seid, u16 vsi_seid,
14197                                 u8 enabled_tc)
14198 {
14199         struct i40e_veb *veb, *uplink_veb = NULL;
14200         int vsi_idx, veb_idx;
14201         int ret;
14202
14203         /* if one seid is 0, the other must be 0 to create a floating relay */
14204         if ((uplink_seid == 0 || vsi_seid == 0) &&
14205             (uplink_seid + vsi_seid != 0)) {
14206                 dev_info(&pf->pdev->dev,
14207                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
14208                          uplink_seid, vsi_seid);
14209                 return NULL;
14210         }
14211
14212         /* make sure there is such a vsi and uplink */
14213         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
14214                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
14215                         break;
14216         if (vsi_idx == pf->num_alloc_vsi && vsi_seid != 0) {
14217                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
14218                          vsi_seid);
14219                 return NULL;
14220         }
14221
14222         if (uplink_seid && uplink_seid != pf->mac_seid) {
14223                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
14224                         if (pf->veb[veb_idx] &&
14225                             pf->veb[veb_idx]->seid == uplink_seid) {
14226                                 uplink_veb = pf->veb[veb_idx];
14227                                 break;
14228                         }
14229                 }
14230                 if (!uplink_veb) {
14231                         dev_info(&pf->pdev->dev,
14232                                  "uplink seid %d not found\n", uplink_seid);
14233                         return NULL;
14234                 }
14235         }
14236
14237         /* get veb sw struct */
14238         veb_idx = i40e_veb_mem_alloc(pf);
14239         if (veb_idx < 0)
14240                 goto err_alloc;
14241         veb = pf->veb[veb_idx];
14242         veb->flags = flags;
14243         veb->uplink_seid = uplink_seid;
14244         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
14245         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
14246
14247         /* create the VEB in the switch */
14248         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
14249         if (ret)
14250                 goto err_veb;
14251         if (vsi_idx == pf->lan_vsi)
14252                 pf->lan_veb = veb->idx;
14253
14254         return veb;
14255
14256 err_veb:
14257         i40e_veb_clear(veb);
14258 err_alloc:
14259         return NULL;
14260 }
14261
14262 /**
14263  * i40e_setup_pf_switch_element - set PF vars based on switch type
14264  * @pf: board private structure
14265  * @ele: element we are building info from
14266  * @num_reported: total number of elements
14267  * @printconfig: should we print the contents
14268  *
14269  * helper function to assist in extracting a few useful SEID values.
14270  **/
14271 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
14272                                 struct i40e_aqc_switch_config_element_resp *ele,
14273                                 u16 num_reported, bool printconfig)
14274 {
14275         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
14276         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
14277         u8 element_type = ele->element_type;
14278         u16 seid = le16_to_cpu(ele->seid);
14279
14280         if (printconfig)
14281                 dev_info(&pf->pdev->dev,
14282                          "type=%d seid=%d uplink=%d downlink=%d\n",
14283                          element_type, seid, uplink_seid, downlink_seid);
14284
14285         switch (element_type) {
14286         case I40E_SWITCH_ELEMENT_TYPE_MAC:
14287                 pf->mac_seid = seid;
14288                 break;
14289         case I40E_SWITCH_ELEMENT_TYPE_VEB:
14290                 /* Main VEB? */
14291                 if (uplink_seid != pf->mac_seid)
14292                         break;
14293                 if (pf->lan_veb >= I40E_MAX_VEB) {
14294                         int v;
14295
14296                         /* find existing or else empty VEB */
14297                         for (v = 0; v < I40E_MAX_VEB; v++) {
14298                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
14299                                         pf->lan_veb = v;
14300                                         break;
14301                                 }
14302                         }
14303                         if (pf->lan_veb >= I40E_MAX_VEB) {
14304                                 v = i40e_veb_mem_alloc(pf);
14305                                 if (v < 0)
14306                                         break;
14307                                 pf->lan_veb = v;
14308                         }
14309                 }
14310                 if (pf->lan_veb >= I40E_MAX_VEB)
14311                         break;
14312
14313                 pf->veb[pf->lan_veb]->seid = seid;
14314                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
14315                 pf->veb[pf->lan_veb]->pf = pf;
14316                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
14317                 break;
14318         case I40E_SWITCH_ELEMENT_TYPE_VSI:
14319                 if (num_reported != 1)
14320                         break;
14321                 /* This is immediately after a reset so we can assume this is
14322                  * the PF's VSI
14323                  */
14324                 pf->mac_seid = uplink_seid;
14325                 pf->pf_seid = downlink_seid;
14326                 pf->main_vsi_seid = seid;
14327                 if (printconfig)
14328                         dev_info(&pf->pdev->dev,
14329                                  "pf_seid=%d main_vsi_seid=%d\n",
14330                                  pf->pf_seid, pf->main_vsi_seid);
14331                 break;
14332         case I40E_SWITCH_ELEMENT_TYPE_PF:
14333         case I40E_SWITCH_ELEMENT_TYPE_VF:
14334         case I40E_SWITCH_ELEMENT_TYPE_EMP:
14335         case I40E_SWITCH_ELEMENT_TYPE_BMC:
14336         case I40E_SWITCH_ELEMENT_TYPE_PE:
14337         case I40E_SWITCH_ELEMENT_TYPE_PA:
14338                 /* ignore these for now */
14339                 break;
14340         default:
14341                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
14342                          element_type, seid);
14343                 break;
14344         }
14345 }
14346
14347 /**
14348  * i40e_fetch_switch_configuration - Get switch config from firmware
14349  * @pf: board private structure
14350  * @printconfig: should we print the contents
14351  *
14352  * Get the current switch configuration from the device and
14353  * extract a few useful SEID values.
14354  **/
14355 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
14356 {
14357         struct i40e_aqc_get_switch_config_resp *sw_config;
14358         u16 next_seid = 0;
14359         int ret = 0;
14360         u8 *aq_buf;
14361         int i;
14362
14363         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
14364         if (!aq_buf)
14365                 return -ENOMEM;
14366
14367         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
14368         do {
14369                 u16 num_reported, num_total;
14370
14371                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
14372                                                 I40E_AQ_LARGE_BUF,
14373                                                 &next_seid, NULL);
14374                 if (ret) {
14375                         dev_info(&pf->pdev->dev,
14376                                  "get switch config failed err %s aq_err %s\n",
14377                                  i40e_stat_str(&pf->hw, ret),
14378                                  i40e_aq_str(&pf->hw,
14379                                              pf->hw.aq.asq_last_status));
14380                         kfree(aq_buf);
14381                         return -ENOENT;
14382                 }
14383
14384                 num_reported = le16_to_cpu(sw_config->header.num_reported);
14385                 num_total = le16_to_cpu(sw_config->header.num_total);
14386
14387                 if (printconfig)
14388                         dev_info(&pf->pdev->dev,
14389                                  "header: %d reported %d total\n",
14390                                  num_reported, num_total);
14391
14392                 for (i = 0; i < num_reported; i++) {
14393                         struct i40e_aqc_switch_config_element_resp *ele =
14394                                 &sw_config->element[i];
14395
14396                         i40e_setup_pf_switch_element(pf, ele, num_reported,
14397                                                      printconfig);
14398                 }
14399         } while (next_seid != 0);
14400
14401         kfree(aq_buf);
14402         return ret;
14403 }
14404
14405 /**
14406  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
14407  * @pf: board private structure
14408  * @reinit: if the Main VSI needs to re-initialized.
14409  * @lock_acquired: indicates whether or not the lock has been acquired
14410  *
14411  * Returns 0 on success, negative value on failure
14412  **/
14413 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit, bool lock_acquired)
14414 {
14415         u16 flags = 0;
14416         int ret;
14417
14418         /* find out what's out there already */
14419         ret = i40e_fetch_switch_configuration(pf, false);
14420         if (ret) {
14421                 dev_info(&pf->pdev->dev,
14422                          "couldn't fetch switch config, err %s aq_err %s\n",
14423                          i40e_stat_str(&pf->hw, ret),
14424                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
14425                 return ret;
14426         }
14427         i40e_pf_reset_stats(pf);
14428
14429         /* set the switch config bit for the whole device to
14430          * support limited promisc or true promisc
14431          * when user requests promisc. The default is limited
14432          * promisc.
14433         */
14434
14435         if ((pf->hw.pf_id == 0) &&
14436             !(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT)) {
14437                 flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
14438                 pf->last_sw_conf_flags = flags;
14439         }
14440
14441         if (pf->hw.pf_id == 0) {
14442                 u16 valid_flags;
14443
14444                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
14445                 ret = i40e_aq_set_switch_config(&pf->hw, flags, valid_flags, 0,
14446                                                 NULL);
14447                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
14448                         dev_info(&pf->pdev->dev,
14449                                  "couldn't set switch config bits, err %s aq_err %s\n",
14450                                  i40e_stat_str(&pf->hw, ret),
14451                                  i40e_aq_str(&pf->hw,
14452                                              pf->hw.aq.asq_last_status));
14453                         /* not a fatal problem, just keep going */
14454                 }
14455                 pf->last_sw_conf_valid_flags = valid_flags;
14456         }
14457
14458         /* first time setup */
14459         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
14460                 struct i40e_vsi *vsi = NULL;
14461                 u16 uplink_seid;
14462
14463                 /* Set up the PF VSI associated with the PF's main VSI
14464                  * that is already in the HW switch
14465                  */
14466                 if (pf->lan_veb < I40E_MAX_VEB && pf->veb[pf->lan_veb])
14467                         uplink_seid = pf->veb[pf->lan_veb]->seid;
14468                 else
14469                         uplink_seid = pf->mac_seid;
14470                 if (pf->lan_vsi == I40E_NO_VSI)
14471                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
14472                 else if (reinit)
14473                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
14474                 if (!vsi) {
14475                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
14476                         i40e_cloud_filter_exit(pf);
14477                         i40e_fdir_teardown(pf);
14478                         return -EAGAIN;
14479                 }
14480         } else {
14481                 /* force a reset of TC and queue layout configurations */
14482                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
14483
14484                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
14485                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
14486                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
14487         }
14488         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
14489
14490         i40e_fdir_sb_setup(pf);
14491
14492         /* Setup static PF queue filter control settings */
14493         ret = i40e_setup_pf_filter_control(pf);
14494         if (ret) {
14495                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
14496                          ret);
14497                 /* Failure here should not stop continuing other steps */
14498         }
14499
14500         /* enable RSS in the HW, even for only one queue, as the stack can use
14501          * the hash
14502          */
14503         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
14504                 i40e_pf_config_rss(pf);
14505
14506         /* fill in link information and enable LSE reporting */
14507         i40e_link_event(pf);
14508
14509         /* Initialize user-specific link properties */
14510         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
14511                                   I40E_AQ_AN_COMPLETED) ? true : false);
14512
14513         i40e_ptp_init(pf);
14514
14515         if (!lock_acquired)
14516                 rtnl_lock();
14517
14518         /* repopulate tunnel port filters */
14519         udp_tunnel_nic_reset_ntf(pf->vsi[pf->lan_vsi]->netdev);
14520
14521         if (!lock_acquired)
14522                 rtnl_unlock();
14523
14524         return ret;
14525 }
14526
14527 /**
14528  * i40e_determine_queue_usage - Work out queue distribution
14529  * @pf: board private structure
14530  **/
14531 static void i40e_determine_queue_usage(struct i40e_pf *pf)
14532 {
14533         int queues_left;
14534         int q_max;
14535
14536         pf->num_lan_qps = 0;
14537
14538         /* Find the max queues to be put into basic use.  We'll always be
14539          * using TC0, whether or not DCB is running, and TC0 will get the
14540          * big RSS set.
14541          */
14542         queues_left = pf->hw.func_caps.num_tx_qp;
14543
14544         if ((queues_left == 1) ||
14545             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
14546                 /* one qp for PF, no queues for anything else */
14547                 queues_left = 0;
14548                 pf->alloc_rss_size = pf->num_lan_qps = 1;
14549
14550                 /* make sure all the fancies are disabled */
14551                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
14552                                I40E_FLAG_IWARP_ENABLED  |
14553                                I40E_FLAG_FD_SB_ENABLED  |
14554                                I40E_FLAG_FD_ATR_ENABLED |
14555                                I40E_FLAG_DCB_CAPABLE    |
14556                                I40E_FLAG_DCB_ENABLED    |
14557                                I40E_FLAG_SRIOV_ENABLED  |
14558                                I40E_FLAG_VMDQ_ENABLED);
14559                 pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
14560         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
14561                                   I40E_FLAG_FD_SB_ENABLED |
14562                                   I40E_FLAG_FD_ATR_ENABLED |
14563                                   I40E_FLAG_DCB_CAPABLE))) {
14564                 /* one qp for PF */
14565                 pf->alloc_rss_size = pf->num_lan_qps = 1;
14566                 queues_left -= pf->num_lan_qps;
14567
14568                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
14569                                I40E_FLAG_IWARP_ENABLED  |
14570                                I40E_FLAG_FD_SB_ENABLED  |
14571                                I40E_FLAG_FD_ATR_ENABLED |
14572                                I40E_FLAG_DCB_ENABLED    |
14573                                I40E_FLAG_VMDQ_ENABLED);
14574                 pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
14575         } else {
14576                 /* Not enough queues for all TCs */
14577                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
14578                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
14579                         pf->flags &= ~(I40E_FLAG_DCB_CAPABLE |
14580                                         I40E_FLAG_DCB_ENABLED);
14581                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
14582                 }
14583
14584                 /* limit lan qps to the smaller of qps, cpus or msix */
14585                 q_max = max_t(int, pf->rss_size_max, num_online_cpus());
14586                 q_max = min_t(int, q_max, pf->hw.func_caps.num_tx_qp);
14587                 q_max = min_t(int, q_max, pf->hw.func_caps.num_msix_vectors);
14588                 pf->num_lan_qps = q_max;
14589
14590                 queues_left -= pf->num_lan_qps;
14591         }
14592
14593         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
14594                 if (queues_left > 1) {
14595                         queues_left -= 1; /* save 1 queue for FD */
14596                 } else {
14597                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
14598                         pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
14599                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
14600                 }
14601         }
14602
14603         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
14604             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
14605                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
14606                                         (queues_left / pf->num_vf_qps));
14607                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
14608         }
14609
14610         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
14611             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
14612                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
14613                                           (queues_left / pf->num_vmdq_qps));
14614                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
14615         }
14616
14617         pf->queues_left = queues_left;
14618         dev_dbg(&pf->pdev->dev,
14619                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
14620                 pf->hw.func_caps.num_tx_qp,
14621                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
14622                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
14623                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
14624                 queues_left);
14625 }
14626
14627 /**
14628  * i40e_setup_pf_filter_control - Setup PF static filter control
14629  * @pf: PF to be setup
14630  *
14631  * i40e_setup_pf_filter_control sets up a PF's initial filter control
14632  * settings. If PE/FCoE are enabled then it will also set the per PF
14633  * based filter sizes required for them. It also enables Flow director,
14634  * ethertype and macvlan type filter settings for the pf.
14635  *
14636  * Returns 0 on success, negative on failure
14637  **/
14638 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
14639 {
14640         struct i40e_filter_control_settings *settings = &pf->filter_settings;
14641
14642         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
14643
14644         /* Flow Director is enabled */
14645         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
14646                 settings->enable_fdir = true;
14647
14648         /* Ethtype and MACVLAN filters enabled for PF */
14649         settings->enable_ethtype = true;
14650         settings->enable_macvlan = true;
14651
14652         if (i40e_set_filter_control(&pf->hw, settings))
14653                 return -ENOENT;
14654
14655         return 0;
14656 }
14657
14658 #define INFO_STRING_LEN 255
14659 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
14660 static void i40e_print_features(struct i40e_pf *pf)
14661 {
14662         struct i40e_hw *hw = &pf->hw;
14663         char *buf;
14664         int i;
14665
14666         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
14667         if (!buf)
14668                 return;
14669
14670         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
14671 #ifdef CONFIG_PCI_IOV
14672         i += scnprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
14673 #endif
14674         i += scnprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d",
14675                       pf->hw.func_caps.num_vsis,
14676                       pf->vsi[pf->lan_vsi]->num_queue_pairs);
14677         if (pf->flags & I40E_FLAG_RSS_ENABLED)
14678                 i += scnprintf(&buf[i], REMAIN(i), " RSS");
14679         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
14680                 i += scnprintf(&buf[i], REMAIN(i), " FD_ATR");
14681         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
14682                 i += scnprintf(&buf[i], REMAIN(i), " FD_SB");
14683                 i += scnprintf(&buf[i], REMAIN(i), " NTUPLE");
14684         }
14685         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
14686                 i += scnprintf(&buf[i], REMAIN(i), " DCB");
14687         i += scnprintf(&buf[i], REMAIN(i), " VxLAN");
14688         i += scnprintf(&buf[i], REMAIN(i), " Geneve");
14689         if (pf->flags & I40E_FLAG_PTP)
14690                 i += scnprintf(&buf[i], REMAIN(i), " PTP");
14691         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
14692                 i += scnprintf(&buf[i], REMAIN(i), " VEB");
14693         else
14694                 i += scnprintf(&buf[i], REMAIN(i), " VEPA");
14695
14696         dev_info(&pf->pdev->dev, "%s\n", buf);
14697         kfree(buf);
14698         WARN_ON(i > INFO_STRING_LEN);
14699 }
14700
14701 /**
14702  * i40e_get_platform_mac_addr - get platform-specific MAC address
14703  * @pdev: PCI device information struct
14704  * @pf: board private structure
14705  *
14706  * Look up the MAC address for the device. First we'll try
14707  * eth_platform_get_mac_address, which will check Open Firmware, or arch
14708  * specific fallback. Otherwise, we'll default to the stored value in
14709  * firmware.
14710  **/
14711 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
14712 {
14713         if (eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
14714                 i40e_get_mac_addr(&pf->hw, pf->hw.mac.addr);
14715 }
14716
14717 /**
14718  * i40e_set_fec_in_flags - helper function for setting FEC options in flags
14719  * @fec_cfg: FEC option to set in flags
14720  * @flags: ptr to flags in which we set FEC option
14721  **/
14722 void i40e_set_fec_in_flags(u8 fec_cfg, u32 *flags)
14723 {
14724         if (fec_cfg & I40E_AQ_SET_FEC_AUTO)
14725                 *flags |= I40E_FLAG_RS_FEC | I40E_FLAG_BASE_R_FEC;
14726         if ((fec_cfg & I40E_AQ_SET_FEC_REQUEST_RS) ||
14727             (fec_cfg & I40E_AQ_SET_FEC_ABILITY_RS)) {
14728                 *flags |= I40E_FLAG_RS_FEC;
14729                 *flags &= ~I40E_FLAG_BASE_R_FEC;
14730         }
14731         if ((fec_cfg & I40E_AQ_SET_FEC_REQUEST_KR) ||
14732             (fec_cfg & I40E_AQ_SET_FEC_ABILITY_KR)) {
14733                 *flags |= I40E_FLAG_BASE_R_FEC;
14734                 *flags &= ~I40E_FLAG_RS_FEC;
14735         }
14736         if (fec_cfg == 0)
14737                 *flags &= ~(I40E_FLAG_RS_FEC | I40E_FLAG_BASE_R_FEC);
14738 }
14739
14740 /**
14741  * i40e_check_recovery_mode - check if we are running transition firmware
14742  * @pf: board private structure
14743  *
14744  * Check registers indicating the firmware runs in recovery mode. Sets the
14745  * appropriate driver state.
14746  *
14747  * Returns true if the recovery mode was detected, false otherwise
14748  **/
14749 static bool i40e_check_recovery_mode(struct i40e_pf *pf)
14750 {
14751         u32 val = rd32(&pf->hw, I40E_GL_FWSTS);
14752
14753         if (val & I40E_GL_FWSTS_FWS1B_MASK) {
14754                 dev_crit(&pf->pdev->dev, "Firmware recovery mode detected. Limiting functionality.\n");
14755                 dev_crit(&pf->pdev->dev, "Refer to the Intel(R) Ethernet Adapters and Devices User Guide for details on firmware recovery mode.\n");
14756                 set_bit(__I40E_RECOVERY_MODE, pf->state);
14757
14758                 return true;
14759         }
14760         if (test_bit(__I40E_RECOVERY_MODE, pf->state))
14761                 dev_info(&pf->pdev->dev, "Please do Power-On Reset to initialize adapter in normal mode with full functionality.\n");
14762
14763         return false;
14764 }
14765
14766 /**
14767  * i40e_pf_loop_reset - perform reset in a loop.
14768  * @pf: board private structure
14769  *
14770  * This function is useful when a NIC is about to enter recovery mode.
14771  * When a NIC's internal data structures are corrupted the NIC's
14772  * firmware is going to enter recovery mode.
14773  * Right after a POR it takes about 7 minutes for firmware to enter
14774  * recovery mode. Until that time a NIC is in some kind of intermediate
14775  * state. After that time period the NIC almost surely enters
14776  * recovery mode. The only way for a driver to detect intermediate
14777  * state is to issue a series of pf-resets and check a return value.
14778  * If a PF reset returns success then the firmware could be in recovery
14779  * mode so the caller of this code needs to check for recovery mode
14780  * if this function returns success. There is a little chance that
14781  * firmware will hang in intermediate state forever.
14782  * Since waiting 7 minutes is quite a lot of time this function waits
14783  * 10 seconds and then gives up by returning an error.
14784  *
14785  * Return 0 on success, negative on failure.
14786  **/
14787 static i40e_status i40e_pf_loop_reset(struct i40e_pf *pf)
14788 {
14789         /* wait max 10 seconds for PF reset to succeed */
14790         const unsigned long time_end = jiffies + 10 * HZ;
14791
14792         struct i40e_hw *hw = &pf->hw;
14793         i40e_status ret;
14794
14795         ret = i40e_pf_reset(hw);
14796         while (ret != I40E_SUCCESS && time_before(jiffies, time_end)) {
14797                 usleep_range(10000, 20000);
14798                 ret = i40e_pf_reset(hw);
14799         }
14800
14801         if (ret == I40E_SUCCESS)
14802                 pf->pfr_count++;
14803         else
14804                 dev_info(&pf->pdev->dev, "PF reset failed: %d\n", ret);
14805
14806         return ret;
14807 }
14808
14809 /**
14810  * i40e_check_fw_empr - check if FW issued unexpected EMP Reset
14811  * @pf: board private structure
14812  *
14813  * Check FW registers to determine if FW issued unexpected EMP Reset.
14814  * Every time when unexpected EMP Reset occurs the FW increments
14815  * a counter of unexpected EMP Resets. When the counter reaches 10
14816  * the FW should enter the Recovery mode
14817  *
14818  * Returns true if FW issued unexpected EMP Reset
14819  **/
14820 static bool i40e_check_fw_empr(struct i40e_pf *pf)
14821 {
14822         const u32 fw_sts = rd32(&pf->hw, I40E_GL_FWSTS) &
14823                            I40E_GL_FWSTS_FWS1B_MASK;
14824         return (fw_sts > I40E_GL_FWSTS_FWS1B_EMPR_0) &&
14825                (fw_sts <= I40E_GL_FWSTS_FWS1B_EMPR_10);
14826 }
14827
14828 /**
14829  * i40e_handle_resets - handle EMP resets and PF resets
14830  * @pf: board private structure
14831  *
14832  * Handle both EMP resets and PF resets and conclude whether there are
14833  * any issues regarding these resets. If there are any issues then
14834  * generate log entry.
14835  *
14836  * Return 0 if NIC is healthy or negative value when there are issues
14837  * with resets
14838  **/
14839 static i40e_status i40e_handle_resets(struct i40e_pf *pf)
14840 {
14841         const i40e_status pfr = i40e_pf_loop_reset(pf);
14842         const bool is_empr = i40e_check_fw_empr(pf);
14843
14844         if (is_empr || pfr != I40E_SUCCESS)
14845                 dev_crit(&pf->pdev->dev, "Entering recovery mode due to repeated FW resets. This may take several minutes. Refer to the Intel(R) Ethernet Adapters and Devices User Guide.\n");
14846
14847         return is_empr ? I40E_ERR_RESET_FAILED : pfr;
14848 }
14849
14850 /**
14851  * i40e_init_recovery_mode - initialize subsystems needed in recovery mode
14852  * @pf: board private structure
14853  * @hw: ptr to the hardware info
14854  *
14855  * This function does a minimal setup of all subsystems needed for running
14856  * recovery mode.
14857  *
14858  * Returns 0 on success, negative on failure
14859  **/
14860 static int i40e_init_recovery_mode(struct i40e_pf *pf, struct i40e_hw *hw)
14861 {
14862         struct i40e_vsi *vsi;
14863         int err;
14864         int v_idx;
14865
14866         pci_set_drvdata(pf->pdev, pf);
14867         pci_save_state(pf->pdev);
14868
14869         /* set up periodic task facility */
14870         timer_setup(&pf->service_timer, i40e_service_timer, 0);
14871         pf->service_timer_period = HZ;
14872
14873         INIT_WORK(&pf->service_task, i40e_service_task);
14874         clear_bit(__I40E_SERVICE_SCHED, pf->state);
14875
14876         err = i40e_init_interrupt_scheme(pf);
14877         if (err)
14878                 goto err_switch_setup;
14879
14880         /* The number of VSIs reported by the FW is the minimum guaranteed
14881          * to us; HW supports far more and we share the remaining pool with
14882          * the other PFs. We allocate space for more than the guarantee with
14883          * the understanding that we might not get them all later.
14884          */
14885         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
14886                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
14887         else
14888                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
14889
14890         /* Set up the vsi struct and our local tracking of the MAIN PF vsi. */
14891         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
14892                           GFP_KERNEL);
14893         if (!pf->vsi) {
14894                 err = -ENOMEM;
14895                 goto err_switch_setup;
14896         }
14897
14898         /* We allocate one VSI which is needed as absolute minimum
14899          * in order to register the netdev
14900          */
14901         v_idx = i40e_vsi_mem_alloc(pf, I40E_VSI_MAIN);
14902         if (v_idx < 0) {
14903                 err = v_idx;
14904                 goto err_switch_setup;
14905         }
14906         pf->lan_vsi = v_idx;
14907         vsi = pf->vsi[v_idx];
14908         if (!vsi) {
14909                 err = -EFAULT;
14910                 goto err_switch_setup;
14911         }
14912         vsi->alloc_queue_pairs = 1;
14913         err = i40e_config_netdev(vsi);
14914         if (err)
14915                 goto err_switch_setup;
14916         err = register_netdev(vsi->netdev);
14917         if (err)
14918                 goto err_switch_setup;
14919         vsi->netdev_registered = true;
14920         i40e_dbg_pf_init(pf);
14921
14922         err = i40e_setup_misc_vector_for_recovery_mode(pf);
14923         if (err)
14924                 goto err_switch_setup;
14925
14926         /* tell the firmware that we're starting */
14927         i40e_send_version(pf);
14928
14929         /* since everything's happy, start the service_task timer */
14930         mod_timer(&pf->service_timer,
14931                   round_jiffies(jiffies + pf->service_timer_period));
14932
14933         return 0;
14934
14935 err_switch_setup:
14936         i40e_reset_interrupt_capability(pf);
14937         del_timer_sync(&pf->service_timer);
14938         i40e_shutdown_adminq(hw);
14939         iounmap(hw->hw_addr);
14940         pci_disable_pcie_error_reporting(pf->pdev);
14941         pci_release_mem_regions(pf->pdev);
14942         pci_disable_device(pf->pdev);
14943         kfree(pf);
14944
14945         return err;
14946 }
14947
14948 /**
14949  * i40e_probe - Device initialization routine
14950  * @pdev: PCI device information struct
14951  * @ent: entry in i40e_pci_tbl
14952  *
14953  * i40e_probe initializes a PF identified by a pci_dev structure.
14954  * The OS initialization, configuring of the PF private structure,
14955  * and a hardware reset occur.
14956  *
14957  * Returns 0 on success, negative on failure
14958  **/
14959 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
14960 {
14961         struct i40e_aq_get_phy_abilities_resp abilities;
14962         struct i40e_pf *pf;
14963         struct i40e_hw *hw;
14964         static u16 pfs_found;
14965         u16 wol_nvm_bits;
14966         u16 link_status;
14967         int err;
14968         u32 val;
14969         u32 i;
14970
14971         err = pci_enable_device_mem(pdev);
14972         if (err)
14973                 return err;
14974
14975         /* set up for high or low dma */
14976         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
14977         if (err) {
14978                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
14979                 if (err) {
14980                         dev_err(&pdev->dev,
14981                                 "DMA configuration failed: 0x%x\n", err);
14982                         goto err_dma;
14983                 }
14984         }
14985
14986         /* set up pci connections */
14987         err = pci_request_mem_regions(pdev, i40e_driver_name);
14988         if (err) {
14989                 dev_info(&pdev->dev,
14990                          "pci_request_selected_regions failed %d\n", err);
14991                 goto err_pci_reg;
14992         }
14993
14994         pci_enable_pcie_error_reporting(pdev);
14995         pci_set_master(pdev);
14996
14997         /* Now that we have a PCI connection, we need to do the
14998          * low level device setup.  This is primarily setting up
14999          * the Admin Queue structures and then querying for the
15000          * device's current profile information.
15001          */
15002         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
15003         if (!pf) {
15004                 err = -ENOMEM;
15005                 goto err_pf_alloc;
15006         }
15007         pf->next_vsi = 0;
15008         pf->pdev = pdev;
15009         set_bit(__I40E_DOWN, pf->state);
15010
15011         hw = &pf->hw;
15012         hw->back = pf;
15013
15014         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
15015                                 I40E_MAX_CSR_SPACE);
15016         /* We believe that the highest register to read is
15017          * I40E_GLGEN_STAT_CLEAR, so we check if the BAR size
15018          * is not less than that before mapping to prevent a
15019          * kernel panic.
15020          */
15021         if (pf->ioremap_len < I40E_GLGEN_STAT_CLEAR) {
15022                 dev_err(&pdev->dev, "Cannot map registers, bar size 0x%X too small, aborting\n",
15023                         pf->ioremap_len);
15024                 err = -ENOMEM;
15025                 goto err_ioremap;
15026         }
15027         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
15028         if (!hw->hw_addr) {
15029                 err = -EIO;
15030                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
15031                          (unsigned int)pci_resource_start(pdev, 0),
15032                          pf->ioremap_len, err);
15033                 goto err_ioremap;
15034         }
15035         hw->vendor_id = pdev->vendor;
15036         hw->device_id = pdev->device;
15037         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
15038         hw->subsystem_vendor_id = pdev->subsystem_vendor;
15039         hw->subsystem_device_id = pdev->subsystem_device;
15040         hw->bus.device = PCI_SLOT(pdev->devfn);
15041         hw->bus.func = PCI_FUNC(pdev->devfn);
15042         hw->bus.bus_id = pdev->bus->number;
15043         pf->instance = pfs_found;
15044
15045         /* Select something other than the 802.1ad ethertype for the
15046          * switch to use internally and drop on ingress.
15047          */
15048         hw->switch_tag = 0xffff;
15049         hw->first_tag = ETH_P_8021AD;
15050         hw->second_tag = ETH_P_8021Q;
15051
15052         INIT_LIST_HEAD(&pf->l3_flex_pit_list);
15053         INIT_LIST_HEAD(&pf->l4_flex_pit_list);
15054         INIT_LIST_HEAD(&pf->ddp_old_prof);
15055
15056         /* set up the locks for the AQ, do this only once in probe
15057          * and destroy them only once in remove
15058          */
15059         mutex_init(&hw->aq.asq_mutex);
15060         mutex_init(&hw->aq.arq_mutex);
15061
15062         pf->msg_enable = netif_msg_init(debug,
15063                                         NETIF_MSG_DRV |
15064                                         NETIF_MSG_PROBE |
15065                                         NETIF_MSG_LINK);
15066         if (debug < -1)
15067                 pf->hw.debug_mask = debug;
15068
15069         /* do a special CORER for clearing PXE mode once at init */
15070         if (hw->revision_id == 0 &&
15071             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
15072                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
15073                 i40e_flush(hw);
15074                 msleep(200);
15075                 pf->corer_count++;
15076
15077                 i40e_clear_pxe_mode(hw);
15078         }
15079
15080         /* Reset here to make sure all is clean and to define PF 'n' */
15081         i40e_clear_hw(hw);
15082
15083         err = i40e_set_mac_type(hw);
15084         if (err) {
15085                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
15086                          err);
15087                 goto err_pf_reset;
15088         }
15089
15090         err = i40e_handle_resets(pf);
15091         if (err)
15092                 goto err_pf_reset;
15093
15094         i40e_check_recovery_mode(pf);
15095
15096         hw->aq.num_arq_entries = I40E_AQ_LEN;
15097         hw->aq.num_asq_entries = I40E_AQ_LEN;
15098         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
15099         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
15100         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
15101
15102         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
15103                  "%s-%s:misc",
15104                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
15105
15106         err = i40e_init_shared_code(hw);
15107         if (err) {
15108                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
15109                          err);
15110                 goto err_pf_reset;
15111         }
15112
15113         /* set up a default setting for link flow control */
15114         pf->hw.fc.requested_mode = I40E_FC_NONE;
15115
15116         err = i40e_init_adminq(hw);
15117         if (err) {
15118                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
15119                         dev_info(&pdev->dev,
15120                                  "The driver for the device stopped because the NVM image v%u.%u is newer than expected v%u.%u. You must install the most recent version of the network driver.\n",
15121                                  hw->aq.api_maj_ver,
15122                                  hw->aq.api_min_ver,
15123                                  I40E_FW_API_VERSION_MAJOR,
15124                                  I40E_FW_MINOR_VERSION(hw));
15125                 else
15126                         dev_info(&pdev->dev,
15127                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
15128
15129                 goto err_pf_reset;
15130         }
15131         i40e_get_oem_version(hw);
15132
15133         /* provide nvm, fw, api versions, vendor:device id, subsys vendor:device id */
15134         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s [%04x:%04x] [%04x:%04x]\n",
15135                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
15136                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
15137                  i40e_nvm_version_str(hw), hw->vendor_id, hw->device_id,
15138                  hw->subsystem_vendor_id, hw->subsystem_device_id);
15139
15140         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
15141             hw->aq.api_min_ver > I40E_FW_MINOR_VERSION(hw))
15142                 dev_dbg(&pdev->dev,
15143                         "The driver for the device detected a newer version of the NVM image v%u.%u than v%u.%u.\n",
15144                          hw->aq.api_maj_ver,
15145                          hw->aq.api_min_ver,
15146                          I40E_FW_API_VERSION_MAJOR,
15147                          I40E_FW_MINOR_VERSION(hw));
15148         else if (hw->aq.api_maj_ver == 1 && hw->aq.api_min_ver < 4)
15149                 dev_info(&pdev->dev,
15150                          "The driver for the device detected an older version of the NVM image v%u.%u than expected v%u.%u. Please update the NVM image.\n",
15151                          hw->aq.api_maj_ver,
15152                          hw->aq.api_min_ver,
15153                          I40E_FW_API_VERSION_MAJOR,
15154                          I40E_FW_MINOR_VERSION(hw));
15155
15156         i40e_verify_eeprom(pf);
15157
15158         /* Rev 0 hardware was never productized */
15159         if (hw->revision_id < 1)
15160                 dev_warn(&pdev->dev, "This device is a pre-production adapter/LOM. Please be aware there may be issues with your hardware. If you are experiencing problems please contact your Intel or hardware representative who provided you with this hardware.\n");
15161
15162         i40e_clear_pxe_mode(hw);
15163
15164         err = i40e_get_capabilities(pf, i40e_aqc_opc_list_func_capabilities);
15165         if (err)
15166                 goto err_adminq_setup;
15167
15168         err = i40e_sw_init(pf);
15169         if (err) {
15170                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
15171                 goto err_sw_init;
15172         }
15173
15174         if (test_bit(__I40E_RECOVERY_MODE, pf->state))
15175                 return i40e_init_recovery_mode(pf, hw);
15176
15177         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
15178                                 hw->func_caps.num_rx_qp, 0, 0);
15179         if (err) {
15180                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
15181                 goto err_init_lan_hmc;
15182         }
15183
15184         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
15185         if (err) {
15186                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
15187                 err = -ENOENT;
15188                 goto err_configure_lan_hmc;
15189         }
15190
15191         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
15192          * Ignore error return codes because if it was already disabled via
15193          * hardware settings this will fail
15194          */
15195         if (pf->hw_features & I40E_HW_STOP_FW_LLDP) {
15196                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
15197                 i40e_aq_stop_lldp(hw, true, false, NULL);
15198         }
15199
15200         /* allow a platform config to override the HW addr */
15201         i40e_get_platform_mac_addr(pdev, pf);
15202
15203         if (!is_valid_ether_addr(hw->mac.addr)) {
15204                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
15205                 err = -EIO;
15206                 goto err_mac_addr;
15207         }
15208         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
15209         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
15210         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
15211         if (is_valid_ether_addr(hw->mac.port_addr))
15212                 pf->hw_features |= I40E_HW_PORT_ID_VALID;
15213
15214         pci_set_drvdata(pdev, pf);
15215         pci_save_state(pdev);
15216
15217         dev_info(&pdev->dev,
15218                  (pf->flags & I40E_FLAG_DISABLE_FW_LLDP) ?
15219                         "FW LLDP is disabled\n" :
15220                         "FW LLDP is enabled\n");
15221
15222         /* Enable FW to write default DCB config on link-up */
15223         i40e_aq_set_dcb_parameters(hw, true, NULL);
15224
15225 #ifdef CONFIG_I40E_DCB
15226         err = i40e_init_pf_dcb(pf);
15227         if (err) {
15228                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
15229                 pf->flags &= ~(I40E_FLAG_DCB_CAPABLE | I40E_FLAG_DCB_ENABLED);
15230                 /* Continue without DCB enabled */
15231         }
15232 #endif /* CONFIG_I40E_DCB */
15233
15234         /* set up periodic task facility */
15235         timer_setup(&pf->service_timer, i40e_service_timer, 0);
15236         pf->service_timer_period = HZ;
15237
15238         INIT_WORK(&pf->service_task, i40e_service_task);
15239         clear_bit(__I40E_SERVICE_SCHED, pf->state);
15240
15241         /* NVM bit on means WoL disabled for the port */
15242         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
15243         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
15244                 pf->wol_en = false;
15245         else
15246                 pf->wol_en = true;
15247         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
15248
15249         /* set up the main switch operations */
15250         i40e_determine_queue_usage(pf);
15251         err = i40e_init_interrupt_scheme(pf);
15252         if (err)
15253                 goto err_switch_setup;
15254
15255         pf->udp_tunnel_nic.set_port = i40e_udp_tunnel_set_port;
15256         pf->udp_tunnel_nic.unset_port = i40e_udp_tunnel_unset_port;
15257         pf->udp_tunnel_nic.flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP;
15258         pf->udp_tunnel_nic.shared = &pf->udp_tunnel_shared;
15259         pf->udp_tunnel_nic.tables[0].n_entries = I40E_MAX_PF_UDP_OFFLOAD_PORTS;
15260         pf->udp_tunnel_nic.tables[0].tunnel_types = UDP_TUNNEL_TYPE_VXLAN |
15261                                                     UDP_TUNNEL_TYPE_GENEVE;
15262
15263         /* The number of VSIs reported by the FW is the minimum guaranteed
15264          * to us; HW supports far more and we share the remaining pool with
15265          * the other PFs. We allocate space for more than the guarantee with
15266          * the understanding that we might not get them all later.
15267          */
15268         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
15269                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
15270         else
15271                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
15272         if (pf->num_alloc_vsi > UDP_TUNNEL_NIC_MAX_SHARING_DEVICES) {
15273                 dev_warn(&pf->pdev->dev,
15274                          "limiting the VSI count due to UDP tunnel limitation %d > %d\n",
15275                          pf->num_alloc_vsi, UDP_TUNNEL_NIC_MAX_SHARING_DEVICES);
15276                 pf->num_alloc_vsi = UDP_TUNNEL_NIC_MAX_SHARING_DEVICES;
15277         }
15278
15279         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
15280         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
15281                           GFP_KERNEL);
15282         if (!pf->vsi) {
15283                 err = -ENOMEM;
15284                 goto err_switch_setup;
15285         }
15286
15287 #ifdef CONFIG_PCI_IOV
15288         /* prep for VF support */
15289         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
15290             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
15291             !test_bit(__I40E_BAD_EEPROM, pf->state)) {
15292                 if (pci_num_vf(pdev))
15293                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
15294         }
15295 #endif
15296         err = i40e_setup_pf_switch(pf, false, false);
15297         if (err) {
15298                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
15299                 goto err_vsis;
15300         }
15301         INIT_LIST_HEAD(&pf->vsi[pf->lan_vsi]->ch_list);
15302
15303         /* if FDIR VSI was set up, start it now */
15304         for (i = 0; i < pf->num_alloc_vsi; i++) {
15305                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
15306                         i40e_vsi_open(pf->vsi[i]);
15307                         break;
15308                 }
15309         }
15310
15311         /* The driver only wants link up/down and module qualification
15312          * reports from firmware.  Note the negative logic.
15313          */
15314         err = i40e_aq_set_phy_int_mask(&pf->hw,
15315                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
15316                                          I40E_AQ_EVENT_MEDIA_NA |
15317                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
15318         if (err)
15319                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
15320                          i40e_stat_str(&pf->hw, err),
15321                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
15322
15323         /* Reconfigure hardware for allowing smaller MSS in the case
15324          * of TSO, so that we avoid the MDD being fired and causing
15325          * a reset in the case of small MSS+TSO.
15326          */
15327         val = rd32(hw, I40E_REG_MSS);
15328         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
15329                 val &= ~I40E_REG_MSS_MIN_MASK;
15330                 val |= I40E_64BYTE_MSS;
15331                 wr32(hw, I40E_REG_MSS, val);
15332         }
15333
15334         if (pf->hw_features & I40E_HW_RESTART_AUTONEG) {
15335                 msleep(75);
15336                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
15337                 if (err)
15338                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
15339                                  i40e_stat_str(&pf->hw, err),
15340                                  i40e_aq_str(&pf->hw,
15341                                              pf->hw.aq.asq_last_status));
15342         }
15343         /* The main driver is (mostly) up and happy. We need to set this state
15344          * before setting up the misc vector or we get a race and the vector
15345          * ends up disabled forever.
15346          */
15347         clear_bit(__I40E_DOWN, pf->state);
15348
15349         /* In case of MSIX we are going to setup the misc vector right here
15350          * to handle admin queue events etc. In case of legacy and MSI
15351          * the misc functionality and queue processing is combined in
15352          * the same vector and that gets setup at open.
15353          */
15354         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
15355                 err = i40e_setup_misc_vector(pf);
15356                 if (err) {
15357                         dev_info(&pdev->dev,
15358                                  "setup of misc vector failed: %d\n", err);
15359                         i40e_cloud_filter_exit(pf);
15360                         i40e_fdir_teardown(pf);
15361                         goto err_vsis;
15362                 }
15363         }
15364
15365 #ifdef CONFIG_PCI_IOV
15366         /* prep for VF support */
15367         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
15368             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
15369             !test_bit(__I40E_BAD_EEPROM, pf->state)) {
15370                 /* disable link interrupts for VFs */
15371                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
15372                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
15373                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
15374                 i40e_flush(hw);
15375
15376                 if (pci_num_vf(pdev)) {
15377                         dev_info(&pdev->dev,
15378                                  "Active VFs found, allocating resources.\n");
15379                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
15380                         if (err)
15381                                 dev_info(&pdev->dev,
15382                                          "Error %d allocating resources for existing VFs\n",
15383                                          err);
15384                 }
15385         }
15386 #endif /* CONFIG_PCI_IOV */
15387
15388         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
15389                 pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
15390                                                       pf->num_iwarp_msix,
15391                                                       I40E_IWARP_IRQ_PILE_ID);
15392                 if (pf->iwarp_base_vector < 0) {
15393                         dev_info(&pdev->dev,
15394                                  "failed to get tracking for %d vectors for IWARP err=%d\n",
15395                                  pf->num_iwarp_msix, pf->iwarp_base_vector);
15396                         pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
15397                 }
15398         }
15399
15400         i40e_dbg_pf_init(pf);
15401
15402         /* tell the firmware that we're starting */
15403         i40e_send_version(pf);
15404
15405         /* since everything's happy, start the service_task timer */
15406         mod_timer(&pf->service_timer,
15407                   round_jiffies(jiffies + pf->service_timer_period));
15408
15409         /* add this PF to client device list and launch a client service task */
15410         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
15411                 err = i40e_lan_add_device(pf);
15412                 if (err)
15413                         dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
15414                                  err);
15415         }
15416
15417 #define PCI_SPEED_SIZE 8
15418 #define PCI_WIDTH_SIZE 8
15419         /* Devices on the IOSF bus do not have this information
15420          * and will report PCI Gen 1 x 1 by default so don't bother
15421          * checking them.
15422          */
15423         if (!(pf->hw_features & I40E_HW_NO_PCI_LINK_CHECK)) {
15424                 char speed[PCI_SPEED_SIZE] = "Unknown";
15425                 char width[PCI_WIDTH_SIZE] = "Unknown";
15426
15427                 /* Get the negotiated link width and speed from PCI config
15428                  * space
15429                  */
15430                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
15431                                           &link_status);
15432
15433                 i40e_set_pci_config_data(hw, link_status);
15434
15435                 switch (hw->bus.speed) {
15436                 case i40e_bus_speed_8000:
15437                         strlcpy(speed, "8.0", PCI_SPEED_SIZE); break;
15438                 case i40e_bus_speed_5000:
15439                         strlcpy(speed, "5.0", PCI_SPEED_SIZE); break;
15440                 case i40e_bus_speed_2500:
15441                         strlcpy(speed, "2.5", PCI_SPEED_SIZE); break;
15442                 default:
15443                         break;
15444                 }
15445                 switch (hw->bus.width) {
15446                 case i40e_bus_width_pcie_x8:
15447                         strlcpy(width, "8", PCI_WIDTH_SIZE); break;
15448                 case i40e_bus_width_pcie_x4:
15449                         strlcpy(width, "4", PCI_WIDTH_SIZE); break;
15450                 case i40e_bus_width_pcie_x2:
15451                         strlcpy(width, "2", PCI_WIDTH_SIZE); break;
15452                 case i40e_bus_width_pcie_x1:
15453                         strlcpy(width, "1", PCI_WIDTH_SIZE); break;
15454                 default:
15455                         break;
15456                 }
15457
15458                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
15459                          speed, width);
15460
15461                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
15462                     hw->bus.speed < i40e_bus_speed_8000) {
15463                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
15464                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
15465                 }
15466         }
15467
15468         /* get the requested speeds from the fw */
15469         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
15470         if (err)
15471                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
15472                         i40e_stat_str(&pf->hw, err),
15473                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
15474         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
15475
15476         /* set the FEC config due to the board capabilities */
15477         i40e_set_fec_in_flags(abilities.fec_cfg_curr_mod_ext_info, &pf->flags);
15478
15479         /* get the supported phy types from the fw */
15480         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
15481         if (err)
15482                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
15483                         i40e_stat_str(&pf->hw, err),
15484                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
15485
15486         /* make sure the MFS hasn't been set lower than the default */
15487 #define MAX_FRAME_SIZE_DEFAULT 0x2600
15488         val = (rd32(&pf->hw, I40E_PRTGL_SAH) &
15489                I40E_PRTGL_SAH_MFS_MASK) >> I40E_PRTGL_SAH_MFS_SHIFT;
15490         if (val < MAX_FRAME_SIZE_DEFAULT)
15491                 dev_warn(&pdev->dev, "MFS for port %x has been set below the default: %x\n",
15492                          pf->hw.port, val);
15493
15494         /* Add a filter to drop all Flow control frames from any VSI from being
15495          * transmitted. By doing so we stop a malicious VF from sending out
15496          * PAUSE or PFC frames and potentially controlling traffic for other
15497          * PF/VF VSIs.
15498          * The FW can still send Flow control frames if enabled.
15499          */
15500         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
15501                                                        pf->main_vsi_seid);
15502
15503         if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
15504                 (pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
15505                 pf->hw_features |= I40E_HW_PHY_CONTROLS_LEDS;
15506         if (pf->hw.device_id == I40E_DEV_ID_SFP_I_X722)
15507                 pf->hw_features |= I40E_HW_HAVE_CRT_RETIMER;
15508         /* print a string summarizing features */
15509         i40e_print_features(pf);
15510
15511         return 0;
15512
15513         /* Unwind what we've done if something failed in the setup */
15514 err_vsis:
15515         set_bit(__I40E_DOWN, pf->state);
15516         i40e_clear_interrupt_scheme(pf);
15517         kfree(pf->vsi);
15518 err_switch_setup:
15519         i40e_reset_interrupt_capability(pf);
15520         del_timer_sync(&pf->service_timer);
15521 err_mac_addr:
15522 err_configure_lan_hmc:
15523         (void)i40e_shutdown_lan_hmc(hw);
15524 err_init_lan_hmc:
15525         kfree(pf->qp_pile);
15526 err_sw_init:
15527 err_adminq_setup:
15528 err_pf_reset:
15529         iounmap(hw->hw_addr);
15530 err_ioremap:
15531         kfree(pf);
15532 err_pf_alloc:
15533         pci_disable_pcie_error_reporting(pdev);
15534         pci_release_mem_regions(pdev);
15535 err_pci_reg:
15536 err_dma:
15537         pci_disable_device(pdev);
15538         return err;
15539 }
15540
15541 /**
15542  * i40e_remove - Device removal routine
15543  * @pdev: PCI device information struct
15544  *
15545  * i40e_remove is called by the PCI subsystem to alert the driver
15546  * that is should release a PCI device.  This could be caused by a
15547  * Hot-Plug event, or because the driver is going to be removed from
15548  * memory.
15549  **/
15550 static void i40e_remove(struct pci_dev *pdev)
15551 {
15552         struct i40e_pf *pf = pci_get_drvdata(pdev);
15553         struct i40e_hw *hw = &pf->hw;
15554         i40e_status ret_code;
15555         int i;
15556
15557         i40e_dbg_pf_exit(pf);
15558
15559         i40e_ptp_stop(pf);
15560
15561         /* Disable RSS in hw */
15562         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
15563         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
15564
15565         while (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
15566                 usleep_range(1000, 2000);
15567
15568         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
15569                 set_bit(__I40E_VF_RESETS_DISABLED, pf->state);
15570                 i40e_free_vfs(pf);
15571                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
15572         }
15573         /* no more scheduling of any task */
15574         set_bit(__I40E_SUSPENDED, pf->state);
15575         set_bit(__I40E_DOWN, pf->state);
15576         if (pf->service_timer.function)
15577                 del_timer_sync(&pf->service_timer);
15578         if (pf->service_task.func)
15579                 cancel_work_sync(&pf->service_task);
15580
15581         if (test_bit(__I40E_RECOVERY_MODE, pf->state)) {
15582                 struct i40e_vsi *vsi = pf->vsi[0];
15583
15584                 /* We know that we have allocated only one vsi for this PF,
15585                  * it was just for registering netdevice, so the interface
15586                  * could be visible in the 'ifconfig' output
15587                  */
15588                 unregister_netdev(vsi->netdev);
15589                 free_netdev(vsi->netdev);
15590
15591                 goto unmap;
15592         }
15593
15594         /* Client close must be called explicitly here because the timer
15595          * has been stopped.
15596          */
15597         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);
15598
15599         i40e_fdir_teardown(pf);
15600
15601         /* If there is a switch structure or any orphans, remove them.
15602          * This will leave only the PF's VSI remaining.
15603          */
15604         for (i = 0; i < I40E_MAX_VEB; i++) {
15605                 if (!pf->veb[i])
15606                         continue;
15607
15608                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
15609                     pf->veb[i]->uplink_seid == 0)
15610                         i40e_switch_branch_release(pf->veb[i]);
15611         }
15612
15613         /* Now we can shutdown the PF's VSIs, just before we kill
15614          * adminq and hmc.
15615          */
15616         for (i = pf->num_alloc_vsi; i--;)
15617                 if (pf->vsi[i]) {
15618                         i40e_vsi_close(pf->vsi[i]);
15619                         i40e_vsi_release(pf->vsi[i]);
15620                         pf->vsi[i] = NULL;
15621                 }
15622
15623         i40e_cloud_filter_exit(pf);
15624
15625         /* remove attached clients */
15626         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
15627                 ret_code = i40e_lan_del_device(pf);
15628                 if (ret_code)
15629                         dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
15630                                  ret_code);
15631         }
15632
15633         /* shutdown and destroy the HMC */
15634         if (hw->hmc.hmc_obj) {
15635                 ret_code = i40e_shutdown_lan_hmc(hw);
15636                 if (ret_code)
15637                         dev_warn(&pdev->dev,
15638                                  "Failed to destroy the HMC resources: %d\n",
15639                                  ret_code);
15640         }
15641
15642 unmap:
15643         /* Free MSI/legacy interrupt 0 when in recovery mode. */
15644         if (test_bit(__I40E_RECOVERY_MODE, pf->state) &&
15645             !(pf->flags & I40E_FLAG_MSIX_ENABLED))
15646                 free_irq(pf->pdev->irq, pf);
15647
15648         /* shutdown the adminq */
15649         i40e_shutdown_adminq(hw);
15650
15651         /* destroy the locks only once, here */
15652         mutex_destroy(&hw->aq.arq_mutex);
15653         mutex_destroy(&hw->aq.asq_mutex);
15654
15655         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
15656         rtnl_lock();
15657         i40e_clear_interrupt_scheme(pf);
15658         for (i = 0; i < pf->num_alloc_vsi; i++) {
15659                 if (pf->vsi[i]) {
15660                         if (!test_bit(__I40E_RECOVERY_MODE, pf->state))
15661                                 i40e_vsi_clear_rings(pf->vsi[i]);
15662                         i40e_vsi_clear(pf->vsi[i]);
15663                         pf->vsi[i] = NULL;
15664                 }
15665         }
15666         rtnl_unlock();
15667
15668         for (i = 0; i < I40E_MAX_VEB; i++) {
15669                 kfree(pf->veb[i]);
15670                 pf->veb[i] = NULL;
15671         }
15672
15673         kfree(pf->qp_pile);
15674         kfree(pf->vsi);
15675
15676         iounmap(hw->hw_addr);
15677         kfree(pf);
15678         pci_release_mem_regions(pdev);
15679
15680         pci_disable_pcie_error_reporting(pdev);
15681         pci_disable_device(pdev);
15682 }
15683
15684 /**
15685  * i40e_pci_error_detected - warning that something funky happened in PCI land
15686  * @pdev: PCI device information struct
15687  * @error: the type of PCI error
15688  *
15689  * Called to warn that something happened and the error handling steps
15690  * are in progress.  Allows the driver to quiesce things, be ready for
15691  * remediation.
15692  **/
15693 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
15694                                                 pci_channel_state_t error)
15695 {
15696         struct i40e_pf *pf = pci_get_drvdata(pdev);
15697
15698         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
15699
15700         if (!pf) {
15701                 dev_info(&pdev->dev,
15702                          "Cannot recover - error happened during device probe\n");
15703                 return PCI_ERS_RESULT_DISCONNECT;
15704         }
15705
15706         /* shutdown all operations */
15707         if (!test_bit(__I40E_SUSPENDED, pf->state))
15708                 i40e_prep_for_reset(pf, false);
15709
15710         /* Request a slot reset */
15711         return PCI_ERS_RESULT_NEED_RESET;
15712 }
15713
15714 /**
15715  * i40e_pci_error_slot_reset - a PCI slot reset just happened
15716  * @pdev: PCI device information struct
15717  *
15718  * Called to find if the driver can work with the device now that
15719  * the pci slot has been reset.  If a basic connection seems good
15720  * (registers are readable and have sane content) then return a
15721  * happy little PCI_ERS_RESULT_xxx.
15722  **/
15723 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
15724 {
15725         struct i40e_pf *pf = pci_get_drvdata(pdev);
15726         pci_ers_result_t result;
15727         u32 reg;
15728
15729         dev_dbg(&pdev->dev, "%s\n", __func__);
15730         if (pci_enable_device_mem(pdev)) {
15731                 dev_info(&pdev->dev,
15732                          "Cannot re-enable PCI device after reset.\n");
15733                 result = PCI_ERS_RESULT_DISCONNECT;
15734         } else {
15735                 pci_set_master(pdev);
15736                 pci_restore_state(pdev);
15737                 pci_save_state(pdev);
15738                 pci_wake_from_d3(pdev, false);
15739
15740                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
15741                 if (reg == 0)
15742                         result = PCI_ERS_RESULT_RECOVERED;
15743                 else
15744                         result = PCI_ERS_RESULT_DISCONNECT;
15745         }
15746
15747         return result;
15748 }
15749
15750 /**
15751  * i40e_pci_error_reset_prepare - prepare device driver for pci reset
15752  * @pdev: PCI device information struct
15753  */
15754 static void i40e_pci_error_reset_prepare(struct pci_dev *pdev)
15755 {
15756         struct i40e_pf *pf = pci_get_drvdata(pdev);
15757
15758         i40e_prep_for_reset(pf, false);
15759 }
15760
15761 /**
15762  * i40e_pci_error_reset_done - pci reset done, device driver reset can begin
15763  * @pdev: PCI device information struct
15764  */
15765 static void i40e_pci_error_reset_done(struct pci_dev *pdev)
15766 {
15767         struct i40e_pf *pf = pci_get_drvdata(pdev);
15768
15769         i40e_reset_and_rebuild(pf, false, false);
15770 #ifdef CONFIG_PCI_IOV
15771         i40e_restore_all_vfs_msi_state(pdev);
15772 #endif /* CONFIG_PCI_IOV */
15773 }
15774
15775 /**
15776  * i40e_pci_error_resume - restart operations after PCI error recovery
15777  * @pdev: PCI device information struct
15778  *
15779  * Called to allow the driver to bring things back up after PCI error
15780  * and/or reset recovery has finished.
15781  **/
15782 static void i40e_pci_error_resume(struct pci_dev *pdev)
15783 {
15784         struct i40e_pf *pf = pci_get_drvdata(pdev);
15785
15786         dev_dbg(&pdev->dev, "%s\n", __func__);
15787         if (test_bit(__I40E_SUSPENDED, pf->state))
15788                 return;
15789
15790         i40e_handle_reset_warning(pf, false);
15791 }
15792
15793 /**
15794  * i40e_enable_mc_magic_wake - enable multicast magic packet wake up
15795  * using the mac_address_write admin q function
15796  * @pf: pointer to i40e_pf struct
15797  **/
15798 static void i40e_enable_mc_magic_wake(struct i40e_pf *pf)
15799 {
15800         struct i40e_hw *hw = &pf->hw;
15801         i40e_status ret;
15802         u8 mac_addr[6];
15803         u16 flags = 0;
15804
15805         /* Get current MAC address in case it's an LAA */
15806         if (pf->vsi[pf->lan_vsi] && pf->vsi[pf->lan_vsi]->netdev) {
15807                 ether_addr_copy(mac_addr,
15808                                 pf->vsi[pf->lan_vsi]->netdev->dev_addr);
15809         } else {
15810                 dev_err(&pf->pdev->dev,
15811                         "Failed to retrieve MAC address; using default\n");
15812                 ether_addr_copy(mac_addr, hw->mac.addr);
15813         }
15814
15815         /* The FW expects the mac address write cmd to first be called with
15816          * one of these flags before calling it again with the multicast
15817          * enable flags.
15818          */
15819         flags = I40E_AQC_WRITE_TYPE_LAA_WOL;
15820
15821         if (hw->func_caps.flex10_enable && hw->partition_id != 1)
15822                 flags = I40E_AQC_WRITE_TYPE_LAA_ONLY;
15823
15824         ret = i40e_aq_mac_address_write(hw, flags, mac_addr, NULL);
15825         if (ret) {
15826                 dev_err(&pf->pdev->dev,
15827                         "Failed to update MAC address registers; cannot enable Multicast Magic packet wake up");
15828                 return;
15829         }
15830
15831         flags = I40E_AQC_MC_MAG_EN
15832                         | I40E_AQC_WOL_PRESERVE_ON_PFR
15833                         | I40E_AQC_WRITE_TYPE_UPDATE_MC_MAG;
15834         ret = i40e_aq_mac_address_write(hw, flags, mac_addr, NULL);
15835         if (ret)
15836                 dev_err(&pf->pdev->dev,
15837                         "Failed to enable Multicast Magic Packet wake up\n");
15838 }
15839
15840 /**
15841  * i40e_shutdown - PCI callback for shutting down
15842  * @pdev: PCI device information struct
15843  **/
15844 static void i40e_shutdown(struct pci_dev *pdev)
15845 {
15846         struct i40e_pf *pf = pci_get_drvdata(pdev);
15847         struct i40e_hw *hw = &pf->hw;
15848
15849         set_bit(__I40E_SUSPENDED, pf->state);
15850         set_bit(__I40E_DOWN, pf->state);
15851
15852         del_timer_sync(&pf->service_timer);
15853         cancel_work_sync(&pf->service_task);
15854         i40e_cloud_filter_exit(pf);
15855         i40e_fdir_teardown(pf);
15856
15857         /* Client close must be called explicitly here because the timer
15858          * has been stopped.
15859          */
15860         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);
15861
15862         if (pf->wol_en && (pf->hw_features & I40E_HW_WOL_MC_MAGIC_PKT_WAKE))
15863                 i40e_enable_mc_magic_wake(pf);
15864
15865         i40e_prep_for_reset(pf, false);
15866
15867         wr32(hw, I40E_PFPM_APM,
15868              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
15869         wr32(hw, I40E_PFPM_WUFC,
15870              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
15871
15872         /* Free MSI/legacy interrupt 0 when in recovery mode. */
15873         if (test_bit(__I40E_RECOVERY_MODE, pf->state) &&
15874             !(pf->flags & I40E_FLAG_MSIX_ENABLED))
15875                 free_irq(pf->pdev->irq, pf);
15876
15877         /* Since we're going to destroy queues during the
15878          * i40e_clear_interrupt_scheme() we should hold the RTNL lock for this
15879          * whole section
15880          */
15881         rtnl_lock();
15882         i40e_clear_interrupt_scheme(pf);
15883         rtnl_unlock();
15884
15885         if (system_state == SYSTEM_POWER_OFF) {
15886                 pci_wake_from_d3(pdev, pf->wol_en);
15887                 pci_set_power_state(pdev, PCI_D3hot);
15888         }
15889 }
15890
15891 /**
15892  * i40e_suspend - PM callback for moving to D3
15893  * @dev: generic device information structure
15894  **/
15895 static int __maybe_unused i40e_suspend(struct device *dev)
15896 {
15897         struct i40e_pf *pf = dev_get_drvdata(dev);
15898         struct i40e_hw *hw = &pf->hw;
15899
15900         /* If we're already suspended, then there is nothing to do */
15901         if (test_and_set_bit(__I40E_SUSPENDED, pf->state))
15902                 return 0;
15903
15904         set_bit(__I40E_DOWN, pf->state);
15905
15906         /* Ensure service task will not be running */
15907         del_timer_sync(&pf->service_timer);
15908         cancel_work_sync(&pf->service_task);
15909
15910         /* Client close must be called explicitly here because the timer
15911          * has been stopped.
15912          */
15913         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);
15914
15915         if (pf->wol_en && (pf->hw_features & I40E_HW_WOL_MC_MAGIC_PKT_WAKE))
15916                 i40e_enable_mc_magic_wake(pf);
15917
15918         /* Since we're going to destroy queues during the
15919          * i40e_clear_interrupt_scheme() we should hold the RTNL lock for this
15920          * whole section
15921          */
15922         rtnl_lock();
15923
15924         i40e_prep_for_reset(pf, true);
15925
15926         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
15927         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
15928
15929         /* Clear the interrupt scheme and release our IRQs so that the system
15930          * can safely hibernate even when there are a large number of CPUs.
15931          * Otherwise hibernation might fail when mapping all the vectors back
15932          * to CPU0.
15933          */
15934         i40e_clear_interrupt_scheme(pf);
15935
15936         rtnl_unlock();
15937
15938         return 0;
15939 }
15940
15941 /**
15942  * i40e_resume - PM callback for waking up from D3
15943  * @dev: generic device information structure
15944  **/
15945 static int __maybe_unused i40e_resume(struct device *dev)
15946 {
15947         struct i40e_pf *pf = dev_get_drvdata(dev);
15948         int err;
15949
15950         /* If we're not suspended, then there is nothing to do */
15951         if (!test_bit(__I40E_SUSPENDED, pf->state))
15952                 return 0;
15953
15954         /* We need to hold the RTNL lock prior to restoring interrupt schemes,
15955          * since we're going to be restoring queues
15956          */
15957         rtnl_lock();
15958
15959         /* We cleared the interrupt scheme when we suspended, so we need to
15960          * restore it now to resume device functionality.
15961          */
15962         err = i40e_restore_interrupt_scheme(pf);
15963         if (err) {
15964                 dev_err(dev, "Cannot restore interrupt scheme: %d\n",
15965                         err);
15966         }
15967
15968         clear_bit(__I40E_DOWN, pf->state);
15969         i40e_reset_and_rebuild(pf, false, true);
15970
15971         rtnl_unlock();
15972
15973         /* Clear suspended state last after everything is recovered */
15974         clear_bit(__I40E_SUSPENDED, pf->state);
15975
15976         /* Restart the service task */
15977         mod_timer(&pf->service_timer,
15978                   round_jiffies(jiffies + pf->service_timer_period));
15979
15980         return 0;
15981 }
15982
15983 static const struct pci_error_handlers i40e_err_handler = {
15984         .error_detected = i40e_pci_error_detected,
15985         .slot_reset = i40e_pci_error_slot_reset,
15986         .reset_prepare = i40e_pci_error_reset_prepare,
15987         .reset_done = i40e_pci_error_reset_done,
15988         .resume = i40e_pci_error_resume,
15989 };
15990
15991 static SIMPLE_DEV_PM_OPS(i40e_pm_ops, i40e_suspend, i40e_resume);
15992
15993 static struct pci_driver i40e_driver = {
15994         .name     = i40e_driver_name,
15995         .id_table = i40e_pci_tbl,
15996         .probe    = i40e_probe,
15997         .remove   = i40e_remove,
15998         .driver   = {
15999                 .pm = &i40e_pm_ops,
16000         },
16001         .shutdown = i40e_shutdown,
16002         .err_handler = &i40e_err_handler,
16003         .sriov_configure = i40e_pci_sriov_configure,
16004 };
16005
16006 /**
16007  * i40e_init_module - Driver registration routine
16008  *
16009  * i40e_init_module is the first routine called when the driver is
16010  * loaded. All it does is register with the PCI subsystem.
16011  **/
16012 static int __init i40e_init_module(void)
16013 {
16014         int err;
16015
16016         pr_info("%s: %s\n", i40e_driver_name, i40e_driver_string);
16017         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
16018
16019         /* There is no need to throttle the number of active tasks because
16020          * each device limits its own task using a state bit for scheduling
16021          * the service task, and the device tasks do not interfere with each
16022          * other, so we don't set a max task limit. We must set WQ_MEM_RECLAIM
16023          * since we need to be able to guarantee forward progress even under
16024          * memory pressure.
16025          */
16026         i40e_wq = alloc_workqueue("%s", WQ_MEM_RECLAIM, 0, i40e_driver_name);
16027         if (!i40e_wq) {
16028                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
16029                 return -ENOMEM;
16030         }
16031
16032         i40e_dbg_init();
16033         err = pci_register_driver(&i40e_driver);
16034         if (err) {
16035                 destroy_workqueue(i40e_wq);
16036                 i40e_dbg_exit();
16037                 return err;
16038         }
16039
16040         return 0;
16041 }
16042 module_init(i40e_init_module);
16043
16044 /**
16045  * i40e_exit_module - Driver exit cleanup routine
16046  *
16047  * i40e_exit_module is called just before the driver is removed
16048  * from memory.
16049  **/
16050 static void __exit i40e_exit_module(void)
16051 {
16052         pci_unregister_driver(&i40e_driver);
16053         destroy_workqueue(i40e_wq);
16054         i40e_dbg_exit();
16055 }
16056 module_exit(i40e_exit_module);