drivers/net/ethernet/intel/fm10k/fm10k_ethtool.c

   1 /* Intel(R) Ethernet Switch Host Interface Driver
   2  * Copyright(c) 2013 - 2016 Intel Corporation.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms and conditions of the GNU General Public License,
   6  * version 2, as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  11  * more details.
  12  *
  13  * The full GNU General Public License is included in this distribution in
  14  * the file called "COPYING".
  15  *
  16  * Contact Information:
  17  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  18  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  19  */
  20
  21 #include <linux/vmalloc.h>
  22
  23 #include "fm10k.h"
  24
  25 struct fm10k_stats {
  26         char stat_string[ETH_GSTRING_LEN];
  27         int sizeof_stat;
  28         int stat_offset;
  29 };
  30
  31 #define FM10K_NETDEV_STAT(_net_stat) { \
  32         .stat_string = #_net_stat, \
  33         .sizeof_stat = FIELD_SIZEOF(struct net_device_stats, _net_stat), \
  34         .stat_offset = offsetof(struct net_device_stats, _net_stat) \
  35 }
  36
  37 static const struct fm10k_stats fm10k_gstrings_net_stats[] = {
  38         FM10K_NETDEV_STAT(tx_packets),
  39         FM10K_NETDEV_STAT(tx_bytes),
  40         FM10K_NETDEV_STAT(tx_errors),
  41         FM10K_NETDEV_STAT(rx_packets),
  42         FM10K_NETDEV_STAT(rx_bytes),
  43         FM10K_NETDEV_STAT(rx_errors),
  44         FM10K_NETDEV_STAT(rx_dropped),
  45
  46         /* detailed Rx errors */
  47         FM10K_NETDEV_STAT(rx_length_errors),
  48         FM10K_NETDEV_STAT(rx_crc_errors),
  49         FM10K_NETDEV_STAT(rx_fifo_errors),
  50 };
  51
  52 #define FM10K_NETDEV_STATS_LEN  ARRAY_SIZE(fm10k_gstrings_net_stats)
  53
  54 #define FM10K_STAT(_name, _stat) { \
  55         .stat_string = _name, \
  56         .sizeof_stat = FIELD_SIZEOF(struct fm10k_intfc, _stat), \
  57         .stat_offset = offsetof(struct fm10k_intfc, _stat) \
  58 }
  59
  60 static const struct fm10k_stats fm10k_gstrings_global_stats[] = {
  61         FM10K_STAT("tx_restart_queue", restart_queue),
  62         FM10K_STAT("tx_busy", tx_busy),
  63         FM10K_STAT("tx_csum_errors", tx_csum_errors),
  64         FM10K_STAT("rx_alloc_failed", alloc_failed),
  65         FM10K_STAT("rx_csum_errors", rx_csum_errors),
  66
  67         FM10K_STAT("tx_packets_nic", tx_packets_nic),
  68         FM10K_STAT("tx_bytes_nic", tx_bytes_nic),
  69         FM10K_STAT("rx_packets_nic", rx_packets_nic),
  70         FM10K_STAT("rx_bytes_nic", rx_bytes_nic),
  71         FM10K_STAT("rx_drops_nic", rx_drops_nic),
  72         FM10K_STAT("rx_overrun_pf", rx_overrun_pf),
  73         FM10K_STAT("rx_overrun_vf", rx_overrun_vf),
  74
  75         FM10K_STAT("swapi_status", hw.swapi.status),
  76         FM10K_STAT("mac_rules_used", hw.swapi.mac.used),
  77         FM10K_STAT("mac_rules_avail", hw.swapi.mac.avail),
  78
  79         FM10K_STAT("reset_while_pending", hw.mac.reset_while_pending),
  80
  81         FM10K_STAT("tx_hang_count", tx_timeout_count),
  82 };
  83
  84 static const struct fm10k_stats fm10k_gstrings_pf_stats[] = {
  85         FM10K_STAT("timeout", stats.timeout.count),
  86         FM10K_STAT("ur", stats.ur.count),
  87         FM10K_STAT("ca", stats.ca.count),
  88         FM10K_STAT("um", stats.um.count),
  89         FM10K_STAT("xec", stats.xec.count),
  90         FM10K_STAT("vlan_drop", stats.vlan_drop.count),
  91         FM10K_STAT("loopback_drop", stats.loopback_drop.count),
  92         FM10K_STAT("nodesc_drop", stats.nodesc_drop.count),
  93 };
  94
  95 #define FM10K_MBX_STAT(_name, _stat) { \
  96         .stat_string = _name, \
  97         .sizeof_stat = FIELD_SIZEOF(struct fm10k_mbx_info, _stat), \
  98         .stat_offset = offsetof(struct fm10k_mbx_info, _stat) \
  99 }
 100
 101 static const struct fm10k_stats fm10k_gstrings_mbx_stats[] = {
 102         FM10K_MBX_STAT("mbx_tx_busy", tx_busy),
 103         FM10K_MBX_STAT("mbx_tx_dropped", tx_dropped),
 104         FM10K_MBX_STAT("mbx_tx_messages", tx_messages),
 105         FM10K_MBX_STAT("mbx_tx_dwords", tx_dwords),
 106         FM10K_MBX_STAT("mbx_tx_mbmem_pulled", tx_mbmem_pulled),
 107         FM10K_MBX_STAT("mbx_rx_messages", rx_messages),
 108         FM10K_MBX_STAT("mbx_rx_dwords", rx_dwords),
 109         FM10K_MBX_STAT("mbx_rx_parse_err", rx_parse_err),
 110         FM10K_MBX_STAT("mbx_rx_mbmem_pushed", rx_mbmem_pushed),
 111 };
 112
 113 #define FM10K_QUEUE_STAT(_name, _stat) { \
 114         .stat_string = _name, \
 115         .sizeof_stat = FIELD_SIZEOF(struct fm10k_ring, _stat), \
 116         .stat_offset = offsetof(struct fm10k_ring, _stat) \
 117 }
 118
 119 static const struct fm10k_stats fm10k_gstrings_queue_stats[] = {
 120         FM10K_QUEUE_STAT("packets", stats.packets),
 121         FM10K_QUEUE_STAT("bytes", stats.bytes),
 122 };
 123
 124 #define FM10K_GLOBAL_STATS_LEN ARRAY_SIZE(fm10k_gstrings_global_stats)
 125 #define FM10K_PF_STATS_LEN ARRAY_SIZE(fm10k_gstrings_pf_stats)
 126 #define FM10K_MBX_STATS_LEN ARRAY_SIZE(fm10k_gstrings_mbx_stats)
 127 #define FM10K_QUEUE_STATS_LEN ARRAY_SIZE(fm10k_gstrings_queue_stats)
 128
 129 #define FM10K_STATIC_STATS_LEN (FM10K_GLOBAL_STATS_LEN + \
 130                                 FM10K_NETDEV_STATS_LEN + \
 131                                 FM10K_MBX_STATS_LEN)
 132
 133 static const char fm10k_gstrings_test[][ETH_GSTRING_LEN] = {
 134         "Mailbox test (on/offline)"
 135 };
 136
 137 #define FM10K_TEST_LEN (sizeof(fm10k_gstrings_test) / ETH_GSTRING_LEN)
 138
 139 enum fm10k_self_test_types {
 140         FM10K_TEST_MBX,
 141         FM10K_TEST_MAX = FM10K_TEST_LEN
 142 };
 143
 144 enum {
 145         FM10K_PRV_FLAG_LEN,
 146 };
 147
 148 static const char fm10k_prv_flags[FM10K_PRV_FLAG_LEN][ETH_GSTRING_LEN] = {
 149 };
 150
 151 static void fm10k_add_stat_strings(char **p, const char *prefix,
 152                                    const struct fm10k_stats stats[],
 153                                    const unsigned int size)
 154 {
 155         unsigned int i;
 156
 157         for (i = 0; i < size; i++) {
 158                 snprintf(*p, ETH_GSTRING_LEN, "%s%s",
 159                          prefix, stats[i].stat_string);
 160                 *p += ETH_GSTRING_LEN;
 161         }
 162 }
 163
 164 static void fm10k_get_stat_strings(struct net_device *dev, u8 *data)
 165 {
 166         struct fm10k_intfc *interface = netdev_priv(dev);
 167         char *p = (char *)data;
 168         unsigned int i;
 169
 170         fm10k_add_stat_strings(&p, "", fm10k_gstrings_net_stats,
 171                                FM10K_NETDEV_STATS_LEN);
 172
 173         fm10k_add_stat_strings(&p, "", fm10k_gstrings_global_stats,
 174                                FM10K_GLOBAL_STATS_LEN);
 175
 176         fm10k_add_stat_strings(&p, "", fm10k_gstrings_mbx_stats,
 177                                FM10K_MBX_STATS_LEN);
 178
 179         if (interface->hw.mac.type != fm10k_mac_vf)
 180                 fm10k_add_stat_strings(&p, "", fm10k_gstrings_pf_stats,
 181                                        FM10K_PF_STATS_LEN);
 182
 183         for (i = 0; i < interface->hw.mac.max_queues; i++) {
 184                 char prefix[ETH_GSTRING_LEN];
 185
 186                 snprintf(prefix, ETH_GSTRING_LEN, "tx_queue_%u_", i);
 187                 fm10k_add_stat_strings(&p, prefix,
 188                                        fm10k_gstrings_queue_stats,
 189                                        FM10K_QUEUE_STATS_LEN);
 190
 191                 snprintf(prefix, ETH_GSTRING_LEN, "rx_queue_%u_", i);
 192                 fm10k_add_stat_strings(&p, prefix,
 193                                        fm10k_gstrings_queue_stats,
 194                                        FM10K_QUEUE_STATS_LEN);
 195         }
 196 }
 197
 198 static void fm10k_get_strings(struct net_device *dev,
 199                               u32 stringset, u8 *data)
 200 {
 201         char *p = (char *)data;
 202
 203         switch (stringset) {
 204         case ETH_SS_TEST:
 205                 memcpy(data, *fm10k_gstrings_test,
 206                        FM10K_TEST_LEN * ETH_GSTRING_LEN);
 207                 break;
 208         case ETH_SS_STATS:
 209                 fm10k_get_stat_strings(dev, data);
 210                 break;
 211         case ETH_SS_PRIV_FLAGS:
 212                 memcpy(p, fm10k_prv_flags,
 213                        FM10K_PRV_FLAG_LEN * ETH_GSTRING_LEN);
 214                 break;
 215         }
 216 }
 217
 218 static int fm10k_get_sset_count(struct net_device *dev, int sset)
 219 {
 220         struct fm10k_intfc *interface = netdev_priv(dev);
 221         struct fm10k_hw *hw = &interface->hw;
 222         int stats_len = FM10K_STATIC_STATS_LEN;
 223
 224         switch (sset) {
 225         case ETH_SS_TEST:
 226                 return FM10K_TEST_LEN;
 227         case ETH_SS_STATS:
 228                 stats_len += hw->mac.max_queues * 2 * FM10K_QUEUE_STATS_LEN;
 229
 230                 if (hw->mac.type != fm10k_mac_vf)
 231                         stats_len += FM10K_PF_STATS_LEN;
 232
 233                 return stats_len;
 234         case ETH_SS_PRIV_FLAGS:
 235                 return FM10K_PRV_FLAG_LEN;
 236         default:
 237                 return -EOPNOTSUPP;
 238         }
 239 }
 240
 241 static void fm10k_add_ethtool_stats(u64 **data, void *pointer,
 242                                     const struct fm10k_stats stats[],
 243                                     const unsigned int size)
 244 {
 245         unsigned int i;
 246         char *p;
 247
 248         if (!pointer) {
 249                 /* memory is not zero allocated so we have to clear it */
 250                 for (i = 0; i < size; i++)
 251                         *((*data)++) = 0;
 252                 return;
 253         }
 254
 255         for (i = 0; i < size; i++) {
 256                 p = (char *)pointer + stats[i].stat_offset;
 257
 258                 switch (stats[i].sizeof_stat) {
 259                 case sizeof(u64):
 260                         *((*data)++) = *(u64 *)p;
 261                         break;
 262                 case sizeof(u32):
 263                         *((*data)++) = *(u32 *)p;
 264                         break;
 265                 case sizeof(u16):
 266                         *((*data)++) = *(u16 *)p;
 267                         break;
 268                 case sizeof(u8):
 269                         *((*data)++) = *(u8 *)p;
 270                         break;
 271                 default:
 272                         *((*data)++) = 0;
 273                 }
 274         }
 275 }
 276
 277 static void fm10k_get_ethtool_stats(struct net_device *netdev,
 278                                     struct ethtool_stats __always_unused *stats,
 279                                     u64 *data)
 280 {
 281         struct fm10k_intfc *interface = netdev_priv(netdev);
 282         struct net_device_stats *net_stats = &netdev->stats;
 283         int i;
 284
 285         fm10k_update_stats(interface);
 286
 287         fm10k_add_ethtool_stats(&data, net_stats, fm10k_gstrings_net_stats,
 288                                 FM10K_NETDEV_STATS_LEN);
 289
 290         fm10k_add_ethtool_stats(&data, interface, fm10k_gstrings_global_stats,
 291                                 FM10K_GLOBAL_STATS_LEN);
 292
 293         fm10k_add_ethtool_stats(&data, &interface->hw.mbx,
 294                                 fm10k_gstrings_mbx_stats,
 295                                 FM10K_MBX_STATS_LEN);
 296
 297         if (interface->hw.mac.type != fm10k_mac_vf) {
 298                 fm10k_add_ethtool_stats(&data, interface,
 299                                         fm10k_gstrings_pf_stats,
 300                                         FM10K_PF_STATS_LEN);
 301         }
 302
 303         for (i = 0; i < interface->hw.mac.max_queues; i++) {
 304                 struct fm10k_ring *ring;
 305
 306                 ring = interface->tx_ring[i];
 307                 fm10k_add_ethtool_stats(&data, ring,
 308                                         fm10k_gstrings_queue_stats,
 309                                         FM10K_QUEUE_STATS_LEN);
 310
 311                 ring = interface->rx_ring[i];
 312                 fm10k_add_ethtool_stats(&data, ring,
 313                                         fm10k_gstrings_queue_stats,
 314                                         FM10K_QUEUE_STATS_LEN);
 315         }
 316 }
 317
 318 /* If function below adds more registers this define needs to be updated */
 319 #define FM10K_REGS_LEN_Q 29
 320
 321 static void fm10k_get_reg_q(struct fm10k_hw *hw, u32 *buff, int i)
 322 {
 323         int idx = 0;
 324
 325         buff[idx++] = fm10k_read_reg(hw, FM10K_RDBAL(i));
 326         buff[idx++] = fm10k_read_reg(hw, FM10K_RDBAH(i));
 327         buff[idx++] = fm10k_read_reg(hw, FM10K_RDLEN(i));
 328         buff[idx++] = fm10k_read_reg(hw, FM10K_TPH_RXCTRL(i));
 329         buff[idx++] = fm10k_read_reg(hw, FM10K_RDH(i));
 330         buff[idx++] = fm10k_read_reg(hw, FM10K_RDT(i));
 331         buff[idx++] = fm10k_read_reg(hw, FM10K_RXQCTL(i));
 332         buff[idx++] = fm10k_read_reg(hw, FM10K_RXDCTL(i));
 333         buff[idx++] = fm10k_read_reg(hw, FM10K_RXINT(i));
 334         buff[idx++] = fm10k_read_reg(hw, FM10K_SRRCTL(i));
 335         buff[idx++] = fm10k_read_reg(hw, FM10K_QPRC(i));
 336         buff[idx++] = fm10k_read_reg(hw, FM10K_QPRDC(i));
 337         buff[idx++] = fm10k_read_reg(hw, FM10K_QBRC_L(i));
 338         buff[idx++] = fm10k_read_reg(hw, FM10K_QBRC_H(i));
 339         buff[idx++] = fm10k_read_reg(hw, FM10K_TDBAL(i));
 340         buff[idx++] = fm10k_read_reg(hw, FM10K_TDBAH(i));
 341         buff[idx++] = fm10k_read_reg(hw, FM10K_TDLEN(i));
 342         buff[idx++] = fm10k_read_reg(hw, FM10K_TPH_TXCTRL(i));
 343         buff[idx++] = fm10k_read_reg(hw, FM10K_TDH(i));
 344         buff[idx++] = fm10k_read_reg(hw, FM10K_TDT(i));
 345         buff[idx++] = fm10k_read_reg(hw, FM10K_TXDCTL(i));
 346         buff[idx++] = fm10k_read_reg(hw, FM10K_TXQCTL(i));
 347         buff[idx++] = fm10k_read_reg(hw, FM10K_TXINT(i));
 348         buff[idx++] = fm10k_read_reg(hw, FM10K_QPTC(i));
 349         buff[idx++] = fm10k_read_reg(hw, FM10K_QBTC_L(i));
 350         buff[idx++] = fm10k_read_reg(hw, FM10K_QBTC_H(i));
 351         buff[idx++] = fm10k_read_reg(hw, FM10K_TQDLOC(i));
 352         buff[idx++] = fm10k_read_reg(hw, FM10K_TX_SGLORT(i));
 353         buff[idx++] = fm10k_read_reg(hw, FM10K_PFVTCTL(i));
 354
 355         BUG_ON(idx != FM10K_REGS_LEN_Q);
 356 }
 357
 358 /* If function above adds more registers this define needs to be updated */
 359 #define FM10K_REGS_LEN_VSI 43
 360
 361 static void fm10k_get_reg_vsi(struct fm10k_hw *hw, u32 *buff, int i)
 362 {
 363         int idx = 0, j;
 364
 365         buff[idx++] = fm10k_read_reg(hw, FM10K_MRQC(i));
 366         for (j = 0; j < 10; j++)
 367                 buff[idx++] = fm10k_read_reg(hw, FM10K_RSSRK(i, j));
 368         for (j = 0; j < 32; j++)
 369                 buff[idx++] = fm10k_read_reg(hw, FM10K_RETA(i, j));
 370
 371         BUG_ON(idx != FM10K_REGS_LEN_VSI);
 372 }
 373
 374 static void fm10k_get_regs(struct net_device *netdev,
 375                            struct ethtool_regs *regs, void *p)
 376 {
 377         struct fm10k_intfc *interface = netdev_priv(netdev);
 378         struct fm10k_hw *hw = &interface->hw;
 379         u32 *buff = p;
 380         u16 i;
 381
 382         regs->version = BIT(24) | (hw->revision_id << 16) | hw->device_id;
 383
 384         switch (hw->mac.type) {
 385         case fm10k_mac_pf:
 386                 /* General PF Registers */
 387                 *(buff++) = fm10k_read_reg(hw, FM10K_CTRL);
 388                 *(buff++) = fm10k_read_reg(hw, FM10K_CTRL_EXT);
 389                 *(buff++) = fm10k_read_reg(hw, FM10K_GCR);
 390                 *(buff++) = fm10k_read_reg(hw, FM10K_GCR_EXT);
 391
 392                 for (i = 0; i < 8; i++) {
 393                         *(buff++) = fm10k_read_reg(hw, FM10K_DGLORTMAP(i));
 394                         *(buff++) = fm10k_read_reg(hw, FM10K_DGLORTDEC(i));
 395                 }
 396
 397                 for (i = 0; i < 65; i++) {
 398                         fm10k_get_reg_vsi(hw, buff, i);
 399                         buff += FM10K_REGS_LEN_VSI;
 400                 }
 401
 402                 *(buff++) = fm10k_read_reg(hw, FM10K_DMA_CTRL);
 403                 *(buff++) = fm10k_read_reg(hw, FM10K_DMA_CTRL2);
 404
 405                 for (i = 0; i < FM10K_MAX_QUEUES_PF; i++) {
 406                         fm10k_get_reg_q(hw, buff, i);
 407                         buff += FM10K_REGS_LEN_Q;
 408                 }
 409
 410                 *(buff++) = fm10k_read_reg(hw, FM10K_TPH_CTRL);
 411
 412                 for (i = 0; i < 8; i++)
 413                         *(buff++) = fm10k_read_reg(hw, FM10K_INT_MAP(i));
 414
 415                 /* Interrupt Throttling Registers */
 416                 for (i = 0; i < 130; i++)
 417                         *(buff++) = fm10k_read_reg(hw, FM10K_ITR(i));
 418
 419                 break;
 420         case fm10k_mac_vf:
 421                 /* General VF registers */
 422                 *(buff++) = fm10k_read_reg(hw, FM10K_VFCTRL);
 423                 *(buff++) = fm10k_read_reg(hw, FM10K_VFINT_MAP);
 424                 *(buff++) = fm10k_read_reg(hw, FM10K_VFSYSTIME);
 425
 426                 /* Interrupt Throttling Registers */
 427                 for (i = 0; i < 8; i++)
 428                         *(buff++) = fm10k_read_reg(hw, FM10K_VFITR(i));
 429
 430                 fm10k_get_reg_vsi(hw, buff, 0);
 431                 buff += FM10K_REGS_LEN_VSI;
 432
 433                 for (i = 0; i < FM10K_MAX_QUEUES_POOL; i++) {
 434                         if (i < hw->mac.max_queues)
 435                                 fm10k_get_reg_q(hw, buff, i);
 436                         else
 437                                 memset(buff, 0, sizeof(u32) * FM10K_REGS_LEN_Q);
 438                         buff += FM10K_REGS_LEN_Q;
 439                 }
 440
 441                 break;
 442         default:
 443                 return;
 444         }
 445 }
 446
 447 /* If function above adds more registers these define need to be updated */
 448 #define FM10K_REGS_LEN_PF \
 449 (162 + (65 * FM10K_REGS_LEN_VSI) + (FM10K_MAX_QUEUES_PF * FM10K_REGS_LEN_Q))
 450 #define FM10K_REGS_LEN_VF \
 451 (11 + FM10K_REGS_LEN_VSI + (FM10K_MAX_QUEUES_POOL * FM10K_REGS_LEN_Q))
 452
 453 static int fm10k_get_regs_len(struct net_device *netdev)
 454 {
 455         struct fm10k_intfc *interface = netdev_priv(netdev);
 456         struct fm10k_hw *hw = &interface->hw;
 457
 458         switch (hw->mac.type) {
 459         case fm10k_mac_pf:
 460                 return FM10K_REGS_LEN_PF * sizeof(u32);
 461         case fm10k_mac_vf:
 462                 return FM10K_REGS_LEN_VF * sizeof(u32);
 463         default:
 464                 return 0;
 465         }
 466 }
 467
 468 static void fm10k_get_drvinfo(struct net_device *dev,
 469                               struct ethtool_drvinfo *info)
 470 {
 471         struct fm10k_intfc *interface = netdev_priv(dev);
 472
 473         strncpy(info->driver, fm10k_driver_name,
 474                 sizeof(info->driver) - 1);
 475         strncpy(info->version, fm10k_driver_version,
 476                 sizeof(info->version) - 1);
 477         strncpy(info->bus_info, pci_name(interface->pdev),
 478                 sizeof(info->bus_info) - 1);
 479 }
 480
 481 static void fm10k_get_pauseparam(struct net_device *dev,
 482                                  struct ethtool_pauseparam *pause)
 483 {
 484         struct fm10k_intfc *interface = netdev_priv(dev);
 485
 486         /* record fixed values for autoneg and tx pause */
 487         pause->autoneg = 0;
 488         pause->tx_pause = 1;
 489
 490         pause->rx_pause = interface->rx_pause ? 1 : 0;
 491 }
 492
 493 static int fm10k_set_pauseparam(struct net_device *dev,
 494                                 struct ethtool_pauseparam *pause)
 495 {
 496         struct fm10k_intfc *interface = netdev_priv(dev);
 497         struct fm10k_hw *hw = &interface->hw;
 498
 499         if (pause->autoneg || !pause->tx_pause)
 500                 return -EINVAL;
 501
 502         /* we can only support pause on the PF to avoid head-of-line blocking */
 503         if (hw->mac.type == fm10k_mac_pf)
 504                 interface->rx_pause = pause->rx_pause ? ~0 : 0;
 505         else if (pause->rx_pause)
 506                 return -EINVAL;
 507
 508         if (netif_running(dev))
 509                 fm10k_update_rx_drop_en(interface);
 510
 511         return 0;
 512 }
 513
 514 static u32 fm10k_get_msglevel(struct net_device *netdev)
 515 {
 516         struct fm10k_intfc *interface = netdev_priv(netdev);
 517
 518         return interface->msg_enable;
 519 }
 520
 521 static void fm10k_set_msglevel(struct net_device *netdev, u32 data)
 522 {
 523         struct fm10k_intfc *interface = netdev_priv(netdev);
 524
 525         interface->msg_enable = data;
 526 }
 527
 528 static void fm10k_get_ringparam(struct net_device *netdev,
 529                                 struct ethtool_ringparam *ring)
 530 {
 531         struct fm10k_intfc *interface = netdev_priv(netdev);
 532
 533         ring->rx_max_pending = FM10K_MAX_RXD;
 534         ring->tx_max_pending = FM10K_MAX_TXD;
 535         ring->rx_mini_max_pending = 0;
 536         ring->rx_jumbo_max_pending = 0;
 537         ring->rx_pending = interface->rx_ring_count;
 538         ring->tx_pending = interface->tx_ring_count;
 539         ring->rx_mini_pending = 0;
 540         ring->rx_jumbo_pending = 0;
 541 }
 542
 543 static int fm10k_set_ringparam(struct net_device *netdev,
 544                                struct ethtool_ringparam *ring)
 545 {
 546         struct fm10k_intfc *interface = netdev_priv(netdev);
 547         struct fm10k_ring *temp_ring;
 548         int i, err = 0;
 549         u32 new_rx_count, new_tx_count;
 550
 551         if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
 552                 return -EINVAL;
 553
 554         new_tx_count = clamp_t(u32, ring->tx_pending,
 555                                FM10K_MIN_TXD, FM10K_MAX_TXD);
 556         new_tx_count = ALIGN(new_tx_count, FM10K_REQ_TX_DESCRIPTOR_MULTIPLE);
 557
 558         new_rx_count = clamp_t(u32, ring->rx_pending,
 559                                FM10K_MIN_RXD, FM10K_MAX_RXD);
 560         new_rx_count = ALIGN(new_rx_count, FM10K_REQ_RX_DESCRIPTOR_MULTIPLE);
 561
 562         if ((new_tx_count == interface->tx_ring_count) &&
 563             (new_rx_count == interface->rx_ring_count)) {
 564                 /* nothing to do */
 565                 return 0;
 566         }
 567
 568         while (test_and_set_bit(__FM10K_RESETTING, &interface->state))
 569                 usleep_range(1000, 2000);
 570
 571         if (!netif_running(interface->netdev)) {
 572                 for (i = 0; i < interface->num_tx_queues; i++)
 573                         interface->tx_ring[i]->count = new_tx_count;
 574                 for (i = 0; i < interface->num_rx_queues; i++)
 575                         interface->rx_ring[i]->count = new_rx_count;
 576                 interface->tx_ring_count = new_tx_count;
 577                 interface->rx_ring_count = new_rx_count;
 578                 goto clear_reset;
 579         }
 580
 581         /* allocate temporary buffer to store rings in */
 582         i = max_t(int, interface->num_tx_queues, interface->num_rx_queues);
 583         temp_ring = vmalloc(i * sizeof(struct fm10k_ring));
 584
 585         if (!temp_ring) {
 586                 err = -ENOMEM;
 587                 goto clear_reset;
 588         }
 589
 590         fm10k_down(interface);
 591
 592         /* Setup new Tx resources and free the old Tx resources in that order.
 593          * We can then assign the new resources to the rings via a memcpy.
 594          * The advantage to this approach is that we are guaranteed to still
 595          * have resources even in the case of an allocation failure.
 596          */
 597         if (new_tx_count != interface->tx_ring_count) {
 598                 for (i = 0; i < interface->num_tx_queues; i++) {
 599                         memcpy(&temp_ring[i], interface->tx_ring[i],
 600                                sizeof(struct fm10k_ring));
 601
 602                         temp_ring[i].count = new_tx_count;
 603                         err = fm10k_setup_tx_resources(&temp_ring[i]);
 604                         if (err) {
 605                                 while (i) {
 606                                         i--;
 607                                         fm10k_free_tx_resources(&temp_ring[i]);
 608                                 }
 609                                 goto err_setup;
 610                         }
 611                 }
 612
 613                 for (i = 0; i < interface->num_tx_queues; i++) {
 614                         fm10k_free_tx_resources(interface->tx_ring[i]);
 615
 616                         memcpy(interface->tx_ring[i], &temp_ring[i],
 617                                sizeof(struct fm10k_ring));
 618                 }
 619
 620                 interface->tx_ring_count = new_tx_count;
 621         }
 622
 623         /* Repeat the process for the Rx rings if needed */
 624         if (new_rx_count != interface->rx_ring_count) {
 625                 for (i = 0; i < interface->num_rx_queues; i++) {
 626                         memcpy(&temp_ring[i], interface->rx_ring[i],
 627                                sizeof(struct fm10k_ring));
 628
 629                         temp_ring[i].count = new_rx_count;
 630                         err = fm10k_setup_rx_resources(&temp_ring[i]);
 631                         if (err) {
 632                                 while (i) {
 633                                         i--;
 634                                         fm10k_free_rx_resources(&temp_ring[i]);
 635                                 }
 636                                 goto err_setup;
 637                         }
 638                 }
 639
 640                 for (i = 0; i < interface->num_rx_queues; i++) {
 641                         fm10k_free_rx_resources(interface->rx_ring[i]);
 642
 643                         memcpy(interface->rx_ring[i], &temp_ring[i],
 644                                sizeof(struct fm10k_ring));
 645                 }
 646
 647                 interface->rx_ring_count = new_rx_count;
 648         }
 649
 650 err_setup:
 651         fm10k_up(interface);
 652         vfree(temp_ring);
 653 clear_reset:
 654         clear_bit(__FM10K_RESETTING, &interface->state);
 655         return err;
 656 }
 657
 658 static int fm10k_get_coalesce(struct net_device *dev,
 659                               struct ethtool_coalesce *ec)
 660 {
 661         struct fm10k_intfc *interface = netdev_priv(dev);
 662
 663         ec->use_adaptive_tx_coalesce = ITR_IS_ADAPTIVE(interface->tx_itr);
 664         ec->tx_coalesce_usecs = interface->tx_itr & ~FM10K_ITR_ADAPTIVE;
 665
 666         ec->use_adaptive_rx_coalesce = ITR_IS_ADAPTIVE(interface->rx_itr);
 667         ec->rx_coalesce_usecs = interface->rx_itr & ~FM10K_ITR_ADAPTIVE;
 668
 669         return 0;
 670 }
 671
 672 static int fm10k_set_coalesce(struct net_device *dev,
 673                               struct ethtool_coalesce *ec)
 674 {
 675         struct fm10k_intfc *interface = netdev_priv(dev);
 676         struct fm10k_q_vector *qv;
 677         u16 tx_itr, rx_itr;
 678         int i;
 679
 680         /* verify limits */
 681         if ((ec->rx_coalesce_usecs > FM10K_ITR_MAX) ||
 682             (ec->tx_coalesce_usecs > FM10K_ITR_MAX))
 683                 return -EINVAL;
 684
 685         /* record settings */
 686         tx_itr = ec->tx_coalesce_usecs;
 687         rx_itr = ec->rx_coalesce_usecs;
 688
 689         /* set initial values for adaptive ITR */
 690         if (ec->use_adaptive_tx_coalesce)
 691                 tx_itr = FM10K_ITR_ADAPTIVE | FM10K_TX_ITR_DEFAULT;
 692
 693         if (ec->use_adaptive_rx_coalesce)
 694                 rx_itr = FM10K_ITR_ADAPTIVE | FM10K_RX_ITR_DEFAULT;
 695
 696         /* update interface */
 697         interface->tx_itr = tx_itr;
 698         interface->rx_itr = rx_itr;
 699
 700         /* update q_vectors */
 701         for (i = 0; i < interface->num_q_vectors; i++) {
 702                 qv = interface->q_vector[i];
 703                 qv->tx.itr = tx_itr;
 704                 qv->rx.itr = rx_itr;
 705         }
 706
 707         return 0;
 708 }
 709
 710 static int fm10k_get_rss_hash_opts(struct fm10k_intfc *interface,
 711                                    struct ethtool_rxnfc *cmd)
 712 {
 713         cmd->data = 0;
 714
 715         /* Report default options for RSS on fm10k */
 716         switch (cmd->flow_type) {
 717         case TCP_V4_FLOW:
 718         case TCP_V6_FLOW:
 719                 cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
 720                 /* fall through */
 721         case UDP_V4_FLOW:
 722                 if (interface->flags & FM10K_FLAG_RSS_FIELD_IPV4_UDP)
 723                         cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
 724                 /* fall through */
 725         case SCTP_V4_FLOW:
 726         case SCTP_V6_FLOW:
 727         case AH_ESP_V4_FLOW:
 728         case AH_ESP_V6_FLOW:
 729         case AH_V4_FLOW:
 730         case AH_V6_FLOW:
 731         case ESP_V4_FLOW:
 732         case ESP_V6_FLOW:
 733         case IPV4_FLOW:
 734         case IPV6_FLOW:
 735                 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
 736                 break;
 737         case UDP_V6_FLOW:
 738                 if (interface->flags & FM10K_FLAG_RSS_FIELD_IPV6_UDP)
 739                         cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
 740                 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
 741                 break;
 742         default:
 743                 return -EINVAL;
 744         }
 745
 746         return 0;
 747 }
 748
 749 static int fm10k_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
 750                            u32 __always_unused *rule_locs)
 751 {
 752         struct fm10k_intfc *interface = netdev_priv(dev);
 753         int ret = -EOPNOTSUPP;
 754
 755         switch (cmd->cmd) {
 756         case ETHTOOL_GRXRINGS:
 757                 cmd->data = interface->num_rx_queues;
 758                 ret = 0;
 759                 break;
 760         case ETHTOOL_GRXFH:
 761                 ret = fm10k_get_rss_hash_opts(interface, cmd);
 762                 break;
 763         default:
 764                 break;
 765         }
 766
 767         return ret;
 768 }
 769
 770 #define UDP_RSS_FLAGS (FM10K_FLAG_RSS_FIELD_IPV4_UDP | \
 771                        FM10K_FLAG_RSS_FIELD_IPV6_UDP)
 772 static int fm10k_set_rss_hash_opt(struct fm10k_intfc *interface,
 773                                   struct ethtool_rxnfc *nfc)
 774 {
 775         u32 flags = interface->flags;
 776
 777         /* RSS does not support anything other than hashing
 778          * to queues on src and dst IPs and ports
 779          */
 780         if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
 781                           RXH_L4_B_0_1 | RXH_L4_B_2_3))
 782                 return -EINVAL;
 783
 784         switch (nfc->flow_type) {
 785         case TCP_V4_FLOW:
 786         case TCP_V6_FLOW:
 787                 if (!(nfc->data & RXH_IP_SRC) ||
 788                     !(nfc->data & RXH_IP_DST) ||
 789                     !(nfc->data & RXH_L4_B_0_1) ||
 790                     !(nfc->data & RXH_L4_B_2_3))
 791                         return -EINVAL;
 792                 break;
 793         case UDP_V4_FLOW:
 794                 if (!(nfc->data & RXH_IP_SRC) ||
 795                     !(nfc->data & RXH_IP_DST))
 796                         return -EINVAL;
 797                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
 798                 case 0:
 799                         flags &= ~FM10K_FLAG_RSS_FIELD_IPV4_UDP;
 800                         break;
 801                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
 802                         flags |= FM10K_FLAG_RSS_FIELD_IPV4_UDP;
 803                         break;
 804                 default:
 805                         return -EINVAL;
 806                 }
 807                 break;
 808         case UDP_V6_FLOW:
 809                 if (!(nfc->data & RXH_IP_SRC) ||
 810                     !(nfc->data & RXH_IP_DST))
 811                         return -EINVAL;
 812                 switch (nfc->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3)) {
 813                 case 0:
 814                         flags &= ~FM10K_FLAG_RSS_FIELD_IPV6_UDP;
 815                         break;
 816                 case (RXH_L4_B_0_1 | RXH_L4_B_2_3):
 817                         flags |= FM10K_FLAG_RSS_FIELD_IPV6_UDP;
 818                         break;
 819                 default:
 820                         return -EINVAL;
 821                 }
 822                 break;
 823         case AH_ESP_V4_FLOW:
 824         case AH_V4_FLOW:
 825         case ESP_V4_FLOW:
 826         case SCTP_V4_FLOW:
 827         case AH_ESP_V6_FLOW:
 828         case AH_V6_FLOW:
 829         case ESP_V6_FLOW:
 830         case SCTP_V6_FLOW:
 831                 if (!(nfc->data & RXH_IP_SRC) ||
 832                     !(nfc->data & RXH_IP_DST) ||
 833                     (nfc->data & RXH_L4_B_0_1) ||
 834                     (nfc->data & RXH_L4_B_2_3))
 835                         return -EINVAL;
 836                 break;
 837         default:
 838                 return -EINVAL;
 839         }
 840
 841         /* if we changed something we need to update flags */
 842         if (flags != interface->flags) {
 843                 struct fm10k_hw *hw = &interface->hw;
 844                 u32 mrqc;
 845
 846                 if ((flags & UDP_RSS_FLAGS) &&
 847                     !(interface->flags & UDP_RSS_FLAGS))
 848                         netif_warn(interface, drv, interface->netdev,
 849                                    "enabling UDP RSS: fragmented packets may arrive out of order to the stack above\n");
 850
 851                 interface->flags = flags;
 852
 853                 /* Perform hash on these packet types */
 854                 mrqc = FM10K_MRQC_IPV4 |
 855                        FM10K_MRQC_TCP_IPV4 |
 856                        FM10K_MRQC_IPV6 |
 857                        FM10K_MRQC_TCP_IPV6;
 858
 859                 if (flags & FM10K_FLAG_RSS_FIELD_IPV4_UDP)
 860                         mrqc |= FM10K_MRQC_UDP_IPV4;
 861                 if (flags & FM10K_FLAG_RSS_FIELD_IPV6_UDP)
 862                         mrqc |= FM10K_MRQC_UDP_IPV6;
 863
 864                 fm10k_write_reg(hw, FM10K_MRQC(0), mrqc);
 865         }
 866
 867         return 0;
 868 }
 869
 870 static int fm10k_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
 871 {
 872         struct fm10k_intfc *interface = netdev_priv(dev);
 873         int ret = -EOPNOTSUPP;
 874
 875         switch (cmd->cmd) {
 876         case ETHTOOL_SRXFH:
 877                 ret = fm10k_set_rss_hash_opt(interface, cmd);
 878                 break;
 879         default:
 880                 break;
 881         }
 882
 883         return ret;
 884 }
 885
 886 static int fm10k_mbx_test(struct fm10k_intfc *interface, u64 *data)
 887 {
 888         struct fm10k_hw *hw = &interface->hw;
 889         struct fm10k_mbx_info *mbx = &hw->mbx;
 890         u32 attr_flag, test_msg[6];
 891         unsigned long timeout;
 892         int err = -EINVAL;
 893
 894         /* For now this is a VF only feature */
 895         if (hw->mac.type != fm10k_mac_vf)
 896                 return 0;
 897
 898         /* loop through both nested and unnested attribute types */
 899         for (attr_flag = BIT(FM10K_TEST_MSG_UNSET);
 900              attr_flag < BIT(2 * FM10K_TEST_MSG_NESTED);
 901              attr_flag += attr_flag) {
 902                 /* generate message to be tested */
 903                 fm10k_tlv_msg_test_create(test_msg, attr_flag);
 904
 905                 fm10k_mbx_lock(interface);
 906                 mbx->test_result = FM10K_NOT_IMPLEMENTED;
 907                 err = mbx->ops.enqueue_tx(hw, mbx, test_msg);
 908                 fm10k_mbx_unlock(interface);
 909
 910                 /* wait up to 1 second for response */
 911                 timeout = jiffies + HZ;
 912                 do {
 913                         if (err < 0)
 914                                 goto err_out;
 915
 916                         usleep_range(500, 1000);
 917
 918                         fm10k_mbx_lock(interface);
 919                         mbx->ops.process(hw, mbx);
 920                         fm10k_mbx_unlock(interface);
 921
 922                         err = mbx->test_result;
 923                         if (!err)
 924                                 break;
 925                 } while (time_is_after_jiffies(timeout));
 926
 927                 /* reporting errors */
 928                 if (err)
 929                         goto err_out;
 930         }
 931
 932 err_out:
 933         *data = err < 0 ? (attr_flag) : (err > 0);
 934         return err;
 935 }
 936
 937 static void fm10k_self_test(struct net_device *dev,
 938                             struct ethtool_test *eth_test, u64 *data)
 939 {
 940         struct fm10k_intfc *interface = netdev_priv(dev);
 941         struct fm10k_hw *hw = &interface->hw;
 942
 943         memset(data, 0, sizeof(*data) * FM10K_TEST_LEN);
 944
 945         if (FM10K_REMOVED(hw->hw_addr)) {
 946                 netif_err(interface, drv, dev,
 947                           "Interface removed - test blocked\n");
 948                 eth_test->flags |= ETH_TEST_FL_FAILED;
 949                 return;
 950         }
 951
 952         if (fm10k_mbx_test(interface, &data[FM10K_TEST_MBX]))
 953                 eth_test->flags |= ETH_TEST_FL_FAILED;
 954 }
 955
 956 static u32 fm10k_get_priv_flags(struct net_device *netdev)
 957 {
 958         return 0;
 959 }
 960
 961 static int fm10k_set_priv_flags(struct net_device *netdev, u32 priv_flags)
 962 {
 963         if (priv_flags >= BIT(FM10K_PRV_FLAG_LEN))
 964                 return -EINVAL;
 965
 966         return 0;
 967 }
 968
 969 static u32 fm10k_get_reta_size(struct net_device __always_unused *netdev)
 970 {
 971         return FM10K_RETA_SIZE * FM10K_RETA_ENTRIES_PER_REG;
 972 }
 973
 974 void fm10k_write_reta(struct fm10k_intfc *interface, const u32 *indir)
 975 {
 976         u16 rss_i = interface->ring_feature[RING_F_RSS].indices;
 977         struct fm10k_hw *hw = &interface->hw;
 978         u32 table[4];
 979         int i, j;
 980
 981         /* record entries to reta table */
 982         for (i = 0; i < FM10K_RETA_SIZE; i++) {
 983                 u32 reta, n;
 984
 985                 /* generate a new table if we weren't given one */
 986                 for (j = 0; j < 4; j++) {
 987                         if (indir)
 988                                 n = indir[4 * i + j];
 989                         else
 990                                 n = ethtool_rxfh_indir_default(4 * i + j,
 991                                                                rss_i);
 992
 993                         table[j] = n;
 994                 }
 995
 996                 reta = table[0] |
 997                         (table[1] << 8) |
 998                         (table[2] << 16) |
 999                         (table[3] << 24);
1000
1001                 if (interface->reta[i] == reta)
1002                         continue;
1003
1004                 interface->reta[i] = reta;
1005                 fm10k_write_reg(hw, FM10K_RETA(0, i), reta);
1006         }
1007 }
1008
1009 static int fm10k_get_reta(struct net_device *netdev, u32 *indir)
1010 {
1011         struct fm10k_intfc *interface = netdev_priv(netdev);
1012         int i;
1013
1014         if (!indir)
1015                 return 0;
1016
1017         for (i = 0; i < FM10K_RETA_SIZE; i++, indir += 4) {
1018                 u32 reta = interface->reta[i];
1019
1020                 indir[0] = (reta << 24) >> 24;
1021                 indir[1] = (reta << 16) >> 24;
1022                 indir[2] = (reta <<  8) >> 24;
1023                 indir[3] = (reta) >> 24;
1024         }
1025
1026         return 0;
1027 }
1028
1029 static int fm10k_set_reta(struct net_device *netdev, const u32 *indir)
1030 {
1031         struct fm10k_intfc *interface = netdev_priv(netdev);
1032         int i;
1033         u16 rss_i;
1034
1035         if (!indir)
1036                 return 0;
1037
1038         /* Verify user input. */
1039         rss_i = interface->ring_feature[RING_F_RSS].indices;
1040         for (i = fm10k_get_reta_size(netdev); i--;) {
1041                 if (indir[i] < rss_i)
1042                         continue;
1043                 return -EINVAL;
1044         }
1045
1046         fm10k_write_reta(interface, indir);
1047
1048         return 0;
1049 }
1050
1051 static u32 fm10k_get_rssrk_size(struct net_device __always_unused *netdev)
1052 {
1053         return FM10K_RSSRK_SIZE * FM10K_RSSRK_ENTRIES_PER_REG;
1054 }
1055
1056 static int fm10k_get_rssh(struct net_device *netdev, u32 *indir, u8 *key,
1057                           u8 *hfunc)
1058 {
1059         struct fm10k_intfc *interface = netdev_priv(netdev);
1060         int i, err;
1061
1062         if (hfunc)
1063                 *hfunc = ETH_RSS_HASH_TOP;
1064
1065         err = fm10k_get_reta(netdev, indir);
1066         if (err || !key)
1067                 return err;
1068
1069         for (i = 0; i < FM10K_RSSRK_SIZE; i++, key += 4)
1070                 *(__le32 *)key = cpu_to_le32(interface->rssrk[i]);
1071
1072         return 0;
1073 }
1074
1075 static int fm10k_set_rssh(struct net_device *netdev, const u32 *indir,
1076                           const u8 *key, const u8 hfunc)
1077 {
1078         struct fm10k_intfc *interface = netdev_priv(netdev);
1079         struct fm10k_hw *hw = &interface->hw;
1080         int i, err;
1081
1082         /* We do not allow change in unsupported parameters */
1083         if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
1084                 return -EOPNOTSUPP;
1085
1086         err = fm10k_set_reta(netdev, indir);
1087         if (err || !key)
1088                 return err;
1089
1090         for (i = 0; i < FM10K_RSSRK_SIZE; i++, key += 4) {
1091                 u32 rssrk = le32_to_cpu(*(__le32 *)key);
1092
1093                 if (interface->rssrk[i] == rssrk)
1094                         continue;
1095
1096                 interface->rssrk[i] = rssrk;
1097                 fm10k_write_reg(hw, FM10K_RSSRK(0, i), rssrk);
1098         }
1099
1100         return 0;
1101 }
1102
1103 static unsigned int fm10k_max_channels(struct net_device *dev)
1104 {
1105         struct fm10k_intfc *interface = netdev_priv(dev);
1106         unsigned int max_combined = interface->hw.mac.max_queues;
1107         u8 tcs = netdev_get_num_tc(dev);
1108
1109         /* For QoS report channels per traffic class */
1110         if (tcs > 1)
1111                 max_combined = BIT((fls(max_combined / tcs) - 1));
1112
1113         return max_combined;
1114 }
1115
1116 static void fm10k_get_channels(struct net_device *dev,
1117                                struct ethtool_channels *ch)
1118 {
1119         struct fm10k_intfc *interface = netdev_priv(dev);
1120         struct fm10k_hw *hw = &interface->hw;
1121
1122         /* report maximum channels */
1123         ch->max_combined = fm10k_max_channels(dev);
1124
1125         /* report info for other vector */
1126         ch->max_other = NON_Q_VECTORS(hw);
1127         ch->other_count = ch->max_other;
1128
1129         /* record RSS queues */
1130         ch->combined_count = interface->ring_feature[RING_F_RSS].indices;
1131 }
1132
1133 static int fm10k_set_channels(struct net_device *dev,
1134                               struct ethtool_channels *ch)
1135 {
1136         struct fm10k_intfc *interface = netdev_priv(dev);
1137         unsigned int count = ch->combined_count;
1138         struct fm10k_hw *hw = &interface->hw;
1139
1140         /* verify they are not requesting separate vectors */
1141         if (!count || ch->rx_count || ch->tx_count)
1142                 return -EINVAL;
1143
1144         /* verify other_count has not changed */
1145         if (ch->other_count != NON_Q_VECTORS(hw))
1146                 return -EINVAL;
1147
1148         /* verify the number of channels does not exceed hardware limits */
1149         if (count > fm10k_max_channels(dev))
1150                 return -EINVAL;
1151
1152         interface->ring_feature[RING_F_RSS].limit = count;
1153
1154         /* use setup TC to update any traffic class queue mapping */
1155         return fm10k_setup_tc(dev, netdev_get_num_tc(dev));
1156 }
1157
1158 static const struct ethtool_ops fm10k_ethtool_ops = {
1159         .get_strings            = fm10k_get_strings,
1160         .get_sset_count         = fm10k_get_sset_count,
1161         .get_ethtool_stats      = fm10k_get_ethtool_stats,
1162         .get_drvinfo            = fm10k_get_drvinfo,
1163         .get_link               = ethtool_op_get_link,
1164         .get_pauseparam         = fm10k_get_pauseparam,
1165         .set_pauseparam         = fm10k_set_pauseparam,
1166         .get_msglevel           = fm10k_get_msglevel,
1167         .set_msglevel           = fm10k_set_msglevel,
1168         .get_ringparam          = fm10k_get_ringparam,
1169         .set_ringparam          = fm10k_set_ringparam,
1170         .get_coalesce           = fm10k_get_coalesce,
1171         .set_coalesce           = fm10k_set_coalesce,
1172         .get_rxnfc              = fm10k_get_rxnfc,
1173         .set_rxnfc              = fm10k_set_rxnfc,
1174         .get_regs               = fm10k_get_regs,
1175         .get_regs_len           = fm10k_get_regs_len,
1176         .self_test              = fm10k_self_test,
1177         .get_priv_flags         = fm10k_get_priv_flags,
1178         .set_priv_flags         = fm10k_set_priv_flags,
1179         .get_rxfh_indir_size    = fm10k_get_reta_size,
1180         .get_rxfh_key_size      = fm10k_get_rssrk_size,
1181         .get_rxfh               = fm10k_get_rssh,
1182         .set_rxfh               = fm10k_set_rssh,
1183         .get_channels           = fm10k_get_channels,
1184         .set_channels           = fm10k_set_channels,
1185         .get_ts_info            = ethtool_op_get_ts_info,
1186 };
1187
1188 void fm10k_set_ethtool_ops(struct net_device *dev)
1189 {
1190         dev->ethtool_ops = &fm10k_ethtool_ops;
1191 }