drivers/net/ethernet/mellanox/mlx4/en_netdev.c

   1 /*
   2  * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  */
  33
  34 #include <linux/bpf.h>
  35 #include <linux/etherdevice.h>
  36 #include <linux/filter.h>
  37 #include <linux/tcp.h>
  38 #include <linux/if_vlan.h>
  39 #include <linux/delay.h>
  40 #include <linux/slab.h>
  41 #include <linux/hash.h>
  42 #include <net/ip.h>
  43 #include <net/vxlan.h>
  44 #include <net/devlink.h>
  45
  46 #include <linux/mlx4/driver.h>
  47 #include <linux/mlx4/device.h>
  48 #include <linux/mlx4/cmd.h>
  49 #include <linux/mlx4/cq.h>
  50
  51 #include "mlx4_en.h"
  52 #include "en_port.h"
  53
  54 #define MLX4_EN_MAX_XDP_MTU ((int)(PAGE_SIZE - ETH_HLEN - (2 * VLAN_HLEN) - \
  55                                 XDP_PACKET_HEADROOM -                       \
  56                                 SKB_DATA_ALIGN(sizeof(struct skb_shared_info))))
  57
  58 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
  59 {
  60         struct mlx4_en_priv *priv = netdev_priv(dev);
  61         int i;
  62         unsigned int offset = 0;
  63
  64         if (up && up != MLX4_EN_NUM_UP_HIGH)
  65                 return -EINVAL;
  66
  67         netdev_set_num_tc(dev, up);
  68         netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
  69         /* Partition Tx queues evenly amongst UP's */
  70         for (i = 0; i < up; i++) {
  71                 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
  72                 offset += priv->num_tx_rings_p_up;
  73         }
  74
  75 #ifdef CONFIG_MLX4_EN_DCB
  76         if (!mlx4_is_slave(priv->mdev->dev)) {
  77                 if (up) {
  78                         if (priv->dcbx_cap)
  79                                 priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
  80                 } else {
  81                         priv->flags &= ~MLX4_EN_FLAG_DCB_ENABLED;
  82                         priv->cee_config.pfc_state = false;
  83                 }
  84         }
  85 #endif /* CONFIG_MLX4_EN_DCB */
  86
  87         return 0;
  88 }
  89
  90 int mlx4_en_alloc_tx_queue_per_tc(struct net_device *dev, u8 tc)
  91 {
  92         struct mlx4_en_priv *priv = netdev_priv(dev);
  93         struct mlx4_en_dev *mdev = priv->mdev;
  94         struct mlx4_en_port_profile new_prof;
  95         struct mlx4_en_priv *tmp;
  96         int total_count;
  97         int port_up = 0;
  98         int err = 0;
  99
 100         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
 101         if (!tmp)
 102                 return -ENOMEM;
 103
 104         mutex_lock(&mdev->state_lock);
 105         memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
 106         new_prof.num_up = (tc == 0) ? MLX4_EN_NUM_UP_LOW :
 107                                       MLX4_EN_NUM_UP_HIGH;
 108         new_prof.tx_ring_num[TX] = new_prof.num_tx_rings_p_up *
 109                                    new_prof.num_up;
 110         total_count = new_prof.tx_ring_num[TX] + new_prof.tx_ring_num[TX_XDP];
 111         if (total_count > MAX_TX_RINGS) {
 112                 err = -EINVAL;
 113                 en_err(priv,
 114                        "Total number of TX and XDP rings (%d) exceeds the maximum supported (%d)\n",
 115                        total_count, MAX_TX_RINGS);
 116                 goto out;
 117         }
 118         err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, true);
 119         if (err)
 120                 goto out;
 121
 122         if (priv->port_up) {
 123                 port_up = 1;
 124                 mlx4_en_stop_port(dev, 1);
 125         }
 126
 127         mlx4_en_safe_replace_resources(priv, tmp);
 128         if (port_up) {
 129                 err = mlx4_en_start_port(dev);
 130                 if (err) {
 131                         en_err(priv, "Failed starting port for setup TC\n");
 132                         goto out;
 133                 }
 134         }
 135
 136         err = mlx4_en_setup_tc(dev, tc);
 137 out:
 138         mutex_unlock(&mdev->state_lock);
 139         kfree(tmp);
 140         return err;
 141 }
 142
 143 static int __mlx4_en_setup_tc(struct net_device *dev, enum tc_setup_type type,
 144                               void *type_data)
 145 {
 146         struct tc_mqprio_qopt *mqprio = type_data;
 147
 148         if (type != TC_SETUP_QDISC_MQPRIO)
 149                 return -EOPNOTSUPP;
 150
 151         if (mqprio->num_tc && mqprio->num_tc != MLX4_EN_NUM_UP_HIGH)
 152                 return -EINVAL;
 153
 154         mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
 155
 156         return mlx4_en_alloc_tx_queue_per_tc(dev, mqprio->num_tc);
 157 }
 158
 159 #ifdef CONFIG_RFS_ACCEL
 160
 161 struct mlx4_en_filter {
 162         struct list_head next;
 163         struct work_struct work;
 164
 165         u8     ip_proto;
 166         __be32 src_ip;
 167         __be32 dst_ip;
 168         __be16 src_port;
 169         __be16 dst_port;
 170
 171         int rxq_index;
 172         struct mlx4_en_priv *priv;
 173         u32 flow_id;                    /* RFS infrastructure id */
 174         int id;                         /* mlx4_en driver id */
 175         u64 reg_id;                     /* Flow steering API id */
 176         u8 activated;                   /* Used to prevent expiry before filter
 177                                          * is attached
 178                                          */
 179         struct hlist_node filter_chain;
 180 };
 181
 182 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 183
 184 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 185 {
 186         switch (ip_proto) {
 187         case IPPROTO_UDP:
 188                 return MLX4_NET_TRANS_RULE_ID_UDP;
 189         case IPPROTO_TCP:
 190                 return MLX4_NET_TRANS_RULE_ID_TCP;
 191         default:
 192                 return MLX4_NET_TRANS_RULE_NUM;
 193         }
 194 };
 195
 196 /* Must not acquire state_lock, as its corresponding work_sync
 197  * is done under it.
 198  */
 199 static void mlx4_en_filter_work(struct work_struct *work)
 200 {
 201         struct mlx4_en_filter *filter = container_of(work,
 202                                                      struct mlx4_en_filter,
 203                                                      work);
 204         struct mlx4_en_priv *priv = filter->priv;
 205         struct mlx4_spec_list spec_tcp_udp = {
 206                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 207                 {
 208                         .tcp_udp = {
 209                                 .dst_port = filter->dst_port,
 210                                 .dst_port_msk = (__force __be16)-1,
 211                                 .src_port = filter->src_port,
 212                                 .src_port_msk = (__force __be16)-1,
 213                         },
 214                 },
 215         };
 216         struct mlx4_spec_list spec_ip = {
 217                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 218                 {
 219                         .ipv4 = {
 220                                 .dst_ip = filter->dst_ip,
 221                                 .dst_ip_msk = (__force __be32)-1,
 222                                 .src_ip = filter->src_ip,
 223                                 .src_ip_msk = (__force __be32)-1,
 224                         },
 225                 },
 226         };
 227         struct mlx4_spec_list spec_eth = {
 228                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 229         };
 230         struct mlx4_net_trans_rule rule = {
 231                 .list = LIST_HEAD_INIT(rule.list),
 232                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 233                 .exclusive = 1,
 234                 .allow_loopback = 1,
 235                 .promisc_mode = MLX4_FS_REGULAR,
 236                 .port = priv->port,
 237                 .priority = MLX4_DOMAIN_RFS,
 238         };
 239         int rc;
 240         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 241
 242         if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
 243                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 244                         filter->ip_proto);
 245                 goto ignore;
 246         }
 247         list_add_tail(&spec_eth.list, &rule.list);
 248         list_add_tail(&spec_ip.list, &rule.list);
 249         list_add_tail(&spec_tcp_udp.list, &rule.list);
 250
 251         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 252         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 253         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 254
 255         filter->activated = 0;
 256
 257         if (filter->reg_id) {
 258                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 259                 if (rc && rc != -ENOENT)
 260                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 261         }
 262
 263         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 264         if (rc)
 265                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 266
 267 ignore:
 268         mlx4_en_filter_rfs_expire(priv);
 269
 270         filter->activated = 1;
 271 }
 272
 273 static inline struct hlist_head *
 274 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 275                    __be16 src_port, __be16 dst_port)
 276 {
 277         unsigned long l;
 278         int bucket_idx;
 279
 280         l = (__force unsigned long)src_port |
 281             ((__force unsigned long)dst_port << 2);
 282         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 283
 284         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 285
 286         return &priv->filter_hash[bucket_idx];
 287 }
 288
 289 static struct mlx4_en_filter *
 290 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 291                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 292                      __be16 dst_port, u32 flow_id)
 293 {
 294         struct mlx4_en_filter *filter;
 295
 296         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 297         if (!filter)
 298                 return NULL;
 299
 300         filter->priv = priv;
 301         filter->rxq_index = rxq_index;
 302         INIT_WORK(&filter->work, mlx4_en_filter_work);
 303
 304         filter->src_ip = src_ip;
 305         filter->dst_ip = dst_ip;
 306         filter->ip_proto = ip_proto;
 307         filter->src_port = src_port;
 308         filter->dst_port = dst_port;
 309
 310         filter->flow_id = flow_id;
 311
 312         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 313
 314         list_add_tail(&filter->next, &priv->filters);
 315         hlist_add_head(&filter->filter_chain,
 316                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 317                                           dst_port));
 318
 319         return filter;
 320 }
 321
 322 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 323 {
 324         struct mlx4_en_priv *priv = filter->priv;
 325         int rc;
 326
 327         list_del(&filter->next);
 328
 329         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 330         if (rc && rc != -ENOENT)
 331                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 332
 333         kfree(filter);
 334 }
 335
 336 static inline struct mlx4_en_filter *
 337 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 338                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 339 {
 340         struct mlx4_en_filter *filter;
 341         struct mlx4_en_filter *ret = NULL;
 342
 343         hlist_for_each_entry(filter,
 344                              filter_hash_bucket(priv, src_ip, dst_ip,
 345                                                 src_port, dst_port),
 346                              filter_chain) {
 347                 if (filter->src_ip == src_ip &&
 348                     filter->dst_ip == dst_ip &&
 349                     filter->ip_proto == ip_proto &&
 350                     filter->src_port == src_port &&
 351                     filter->dst_port == dst_port) {
 352                         ret = filter;
 353                         break;
 354                 }
 355         }
 356
 357         return ret;
 358 }
 359
 360 static int
 361 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 362                    u16 rxq_index, u32 flow_id)
 363 {
 364         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 365         struct mlx4_en_filter *filter;
 366         const struct iphdr *ip;
 367         const __be16 *ports;
 368         u8 ip_proto;
 369         __be32 src_ip;
 370         __be32 dst_ip;
 371         __be16 src_port;
 372         __be16 dst_port;
 373         int nhoff = skb_network_offset(skb);
 374         int ret = 0;
 375
 376         if (skb->encapsulation)
 377                 return -EPROTONOSUPPORT;
 378
 379         if (skb->protocol != htons(ETH_P_IP))
 380                 return -EPROTONOSUPPORT;
 381
 382         ip = (const struct iphdr *)(skb->data + nhoff);
 383         if (ip_is_fragment(ip))
 384                 return -EPROTONOSUPPORT;
 385
 386         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 387                 return -EPROTONOSUPPORT;
 388         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 389
 390         ip_proto = ip->protocol;
 391         src_ip = ip->saddr;
 392         dst_ip = ip->daddr;
 393         src_port = ports[0];
 394         dst_port = ports[1];
 395
 396         spin_lock_bh(&priv->filters_lock);
 397         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 398                                      src_port, dst_port);
 399         if (filter) {
 400                 if (filter->rxq_index == rxq_index)
 401                         goto out;
 402
 403                 filter->rxq_index = rxq_index;
 404         } else {
 405                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 406                                               src_ip, dst_ip, ip_proto,
 407                                               src_port, dst_port, flow_id);
 408                 if (!filter) {
 409                         ret = -ENOMEM;
 410                         goto err;
 411                 }
 412         }
 413
 414         queue_work(priv->mdev->workqueue, &filter->work);
 415
 416 out:
 417         ret = filter->id;
 418 err:
 419         spin_unlock_bh(&priv->filters_lock);
 420
 421         return ret;
 422 }
 423
 424 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 425 {
 426         struct mlx4_en_filter *filter, *tmp;
 427         LIST_HEAD(del_list);
 428
 429         spin_lock_bh(&priv->filters_lock);
 430         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 431                 list_move(&filter->next, &del_list);
 432                 hlist_del(&filter->filter_chain);
 433         }
 434         spin_unlock_bh(&priv->filters_lock);
 435
 436         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 437                 cancel_work_sync(&filter->work);
 438                 mlx4_en_filter_free(filter);
 439         }
 440 }
 441
 442 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 443 {
 444         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 445         LIST_HEAD(del_list);
 446         int i = 0;
 447
 448         spin_lock_bh(&priv->filters_lock);
 449         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 450                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 451                         break;
 452
 453                 if (filter->activated &&
 454                     !work_pending(&filter->work) &&
 455                     rps_may_expire_flow(priv->dev,
 456                                         filter->rxq_index, filter->flow_id,
 457                                         filter->id)) {
 458                         list_move(&filter->next, &del_list);
 459                         hlist_del(&filter->filter_chain);
 460                 } else
 461                         last_filter = filter;
 462
 463                 i++;
 464         }
 465
 466         if (last_filter && (&last_filter->next != priv->filters.next))
 467                 list_move(&priv->filters, &last_filter->next);
 468
 469         spin_unlock_bh(&priv->filters_lock);
 470
 471         list_for_each_entry_safe(filter, tmp, &del_list, next)
 472                 mlx4_en_filter_free(filter);
 473 }
 474 #endif
 475
 476 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
 477                                    __be16 proto, u16 vid)
 478 {
 479         struct mlx4_en_priv *priv = netdev_priv(dev);
 480         struct mlx4_en_dev *mdev = priv->mdev;
 481         int err;
 482         int idx;
 483
 484         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 485
 486         set_bit(vid, priv->active_vlans);
 487
 488         /* Add VID to port VLAN filter */
 489         mutex_lock(&mdev->state_lock);
 490         if (mdev->device_up && priv->port_up) {
 491                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 492                 if (err) {
 493                         en_err(priv, "Failed configuring VLAN filter\n");
 494                         goto out;
 495                 }
 496         }
 497         err = mlx4_register_vlan(mdev->dev, priv->port, vid, &idx);
 498         if (err)
 499                 en_dbg(HW, priv, "Failed adding vlan %d\n", vid);
 500
 501 out:
 502         mutex_unlock(&mdev->state_lock);
 503         return err;
 504 }
 505
 506 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
 507                                     __be16 proto, u16 vid)
 508 {
 509         struct mlx4_en_priv *priv = netdev_priv(dev);
 510         struct mlx4_en_dev *mdev = priv->mdev;
 511         int err = 0;
 512
 513         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 514
 515         clear_bit(vid, priv->active_vlans);
 516
 517         /* Remove VID from port VLAN filter */
 518         mutex_lock(&mdev->state_lock);
 519         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 520
 521         if (mdev->device_up && priv->port_up) {
 522                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 523                 if (err)
 524                         en_err(priv, "Failed configuring VLAN filter\n");
 525         }
 526         mutex_unlock(&mdev->state_lock);
 527
 528         return err;
 529 }
 530
 531 static void mlx4_en_u64_to_mac(struct net_device *dev, u64 src_mac)
 532 {
 533         u8 addr[ETH_ALEN];
 534
 535         u64_to_ether_addr(src_mac, addr);
 536         eth_hw_addr_set(dev, addr);
 537 }
 538
 539
 540 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv,
 541                                     const unsigned char *addr,
 542                                     int qpn, u64 *reg_id)
 543 {
 544         int err;
 545
 546         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
 547             priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
 548                 return 0; /* do nothing */
 549
 550         err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
 551                                     MLX4_DOMAIN_NIC, reg_id);
 552         if (err) {
 553                 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 554                 return err;
 555         }
 556         en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
 557         return 0;
 558 }
 559
 560
 561 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 562                                 const unsigned char *mac, int *qpn, u64 *reg_id)
 563 {
 564         struct mlx4_en_dev *mdev = priv->mdev;
 565         struct mlx4_dev *dev = mdev->dev;
 566         int err;
 567
 568         switch (dev->caps.steering_mode) {
 569         case MLX4_STEERING_MODE_B0: {
 570                 struct mlx4_qp qp;
 571                 u8 gid[16] = {0};
 572
 573                 qp.qpn = *qpn;
 574                 memcpy(&gid[10], mac, ETH_ALEN);
 575                 gid[5] = priv->port;
 576
 577                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 578                 break;
 579         }
 580         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 581                 struct mlx4_spec_list spec_eth = { {NULL} };
 582                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 583
 584                 struct mlx4_net_trans_rule rule = {
 585                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 586                         .exclusive = 0,
 587                         .allow_loopback = 1,
 588                         .promisc_mode = MLX4_FS_REGULAR,
 589                         .priority = MLX4_DOMAIN_NIC,
 590                 };
 591
 592                 rule.port = priv->port;
 593                 rule.qpn = *qpn;
 594                 INIT_LIST_HEAD(&rule.list);
 595
 596                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 597                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 598                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 599                 list_add_tail(&spec_eth.list, &rule.list);
 600
 601                 err = mlx4_flow_attach(dev, &rule, reg_id);
 602                 break;
 603         }
 604         default:
 605                 return -EINVAL;
 606         }
 607         if (err)
 608                 en_warn(priv, "Failed Attaching Unicast\n");
 609
 610         return err;
 611 }
 612
 613 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 614                                      const unsigned char *mac,
 615                                      int qpn, u64 reg_id)
 616 {
 617         struct mlx4_en_dev *mdev = priv->mdev;
 618         struct mlx4_dev *dev = mdev->dev;
 619
 620         switch (dev->caps.steering_mode) {
 621         case MLX4_STEERING_MODE_B0: {
 622                 struct mlx4_qp qp;
 623                 u8 gid[16] = {0};
 624
 625                 qp.qpn = qpn;
 626                 memcpy(&gid[10], mac, ETH_ALEN);
 627                 gid[5] = priv->port;
 628
 629                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 630                 break;
 631         }
 632         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 633                 mlx4_flow_detach(dev, reg_id);
 634                 break;
 635         }
 636         default:
 637                 en_err(priv, "Invalid steering mode.\n");
 638         }
 639 }
 640
 641 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 642 {
 643         struct mlx4_en_dev *mdev = priv->mdev;
 644         struct mlx4_dev *dev = mdev->dev;
 645         int index = 0;
 646         int err = 0;
 647         int *qpn = &priv->base_qpn;
 648         u64 mac = ether_addr_to_u64(priv->dev->dev_addr);
 649
 650         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 651                priv->dev->dev_addr);
 652         index = mlx4_register_mac(dev, priv->port, mac);
 653         if (index < 0) {
 654                 err = index;
 655                 en_err(priv, "Failed adding MAC: %pM\n",
 656                        priv->dev->dev_addr);
 657                 return err;
 658         }
 659
 660         en_info(priv, "Steering Mode %d\n", dev->caps.steering_mode);
 661
 662         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 663                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 664                 *qpn = base_qpn + index;
 665                 return 0;
 666         }
 667
 668         err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP,
 669                                     MLX4_RES_USAGE_DRIVER);
 670         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 671         if (err) {
 672                 en_err(priv, "Failed to reserve qp for mac registration\n");
 673                 mlx4_unregister_mac(dev, priv->port, mac);
 674                 return err;
 675         }
 676
 677         return 0;
 678 }
 679
 680 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 681 {
 682         struct mlx4_en_dev *mdev = priv->mdev;
 683         struct mlx4_dev *dev = mdev->dev;
 684         int qpn = priv->base_qpn;
 685
 686         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 687                 u64 mac = ether_addr_to_u64(priv->dev->dev_addr);
 688                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 689                        priv->dev->dev_addr);
 690                 mlx4_unregister_mac(dev, priv->port, mac);
 691         } else {
 692                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 693                        priv->port, qpn);
 694                 mlx4_qp_release_range(dev, qpn, 1);
 695                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 696         }
 697 }
 698
 699 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
 700                                unsigned char *new_mac, unsigned char *prev_mac)
 701 {
 702         struct mlx4_en_dev *mdev = priv->mdev;
 703         struct mlx4_dev *dev = mdev->dev;
 704         int err = 0;
 705         u64 new_mac_u64 = ether_addr_to_u64(new_mac);
 706
 707         if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
 708                 struct hlist_head *bucket;
 709                 unsigned int mac_hash;
 710                 struct mlx4_mac_entry *entry;
 711                 struct hlist_node *tmp;
 712                 u64 prev_mac_u64 = ether_addr_to_u64(prev_mac);
 713
 714                 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
 715                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 716                         if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
 717                                 mlx4_en_uc_steer_release(priv, entry->mac,
 718                                                          qpn, entry->reg_id);
 719                                 mlx4_unregister_mac(dev, priv->port,
 720                                                     prev_mac_u64);
 721                                 hlist_del_rcu(&entry->hlist);
 722                                 synchronize_rcu();
 723                                 memcpy(entry->mac, new_mac, ETH_ALEN);
 724                                 entry->reg_id = 0;
 725                                 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
 726                                 hlist_add_head_rcu(&entry->hlist,
 727                                                    &priv->mac_hash[mac_hash]);
 728                                 mlx4_register_mac(dev, priv->port, new_mac_u64);
 729                                 err = mlx4_en_uc_steer_add(priv, new_mac,
 730                                                            &qpn,
 731                                                            &entry->reg_id);
 732                                 if (err)
 733                                         return err;
 734                                 if (priv->tunnel_reg_id) {
 735                                         mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 736                                         priv->tunnel_reg_id = 0;
 737                                 }
 738                                 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
 739                                                                &priv->tunnel_reg_id);
 740                                 return err;
 741                         }
 742                 }
 743                 return -EINVAL;
 744         }
 745
 746         return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
 747 }
 748
 749 static void mlx4_en_update_user_mac(struct mlx4_en_priv *priv,
 750                                     unsigned char new_mac[ETH_ALEN + 2])
 751 {
 752         struct mlx4_en_dev *mdev = priv->mdev;
 753         int err;
 754
 755         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_USER_MAC_EN))
 756                 return;
 757
 758         err = mlx4_SET_PORT_user_mac(mdev->dev, priv->port, new_mac);
 759         if (err)
 760                 en_err(priv, "Failed to pass user MAC(%pM) to Firmware for port %d, with error %d\n",
 761                        new_mac, priv->port, err);
 762 }
 763
 764 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
 765                               unsigned char new_mac[ETH_ALEN + 2])
 766 {
 767         int err = 0;
 768
 769         if (priv->port_up) {
 770                 /* Remove old MAC and insert the new one */
 771                 err = mlx4_en_replace_mac(priv, priv->base_qpn,
 772                                           new_mac, priv->current_mac);
 773                 if (err)
 774                         en_err(priv, "Failed changing HW MAC address\n");
 775         } else
 776                 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 777
 778         if (!err)
 779                 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
 780
 781         return err;
 782 }
 783
 784 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 785 {
 786         struct mlx4_en_priv *priv = netdev_priv(dev);
 787         struct mlx4_en_dev *mdev = priv->mdev;
 788         struct sockaddr *saddr = addr;
 789         unsigned char new_mac[ETH_ALEN + 2];
 790         int err;
 791
 792         if (!is_valid_ether_addr(saddr->sa_data))
 793                 return -EADDRNOTAVAIL;
 794
 795         mutex_lock(&mdev->state_lock);
 796         memcpy(new_mac, saddr->sa_data, ETH_ALEN);
 797         err = mlx4_en_do_set_mac(priv, new_mac);
 798         if (err)
 799                 goto out;
 800
 801         eth_hw_addr_set(dev, saddr->sa_data);
 802         mlx4_en_update_user_mac(priv, new_mac);
 803 out:
 804         mutex_unlock(&mdev->state_lock);
 805
 806         return err;
 807 }
 808
 809 static void mlx4_en_clear_list(struct net_device *dev)
 810 {
 811         struct mlx4_en_priv *priv = netdev_priv(dev);
 812         struct mlx4_en_mc_list *tmp, *mc_to_del;
 813
 814         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 815                 list_del(&mc_to_del->list);
 816                 kfree(mc_to_del);
 817         }
 818 }
 819
 820 static void mlx4_en_cache_mclist(struct net_device *dev)
 821 {
 822         struct mlx4_en_priv *priv = netdev_priv(dev);
 823         struct netdev_hw_addr *ha;
 824         struct mlx4_en_mc_list *tmp;
 825
 826         mlx4_en_clear_list(dev);
 827         netdev_for_each_mc_addr(ha, dev) {
 828                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 829                 if (!tmp) {
 830                         mlx4_en_clear_list(dev);
 831                         return;
 832                 }
 833                 memcpy(tmp->addr, ha->addr, ETH_ALEN);
 834                 list_add_tail(&tmp->list, &priv->mc_list);
 835         }
 836 }
 837
 838 static void update_mclist_flags(struct mlx4_en_priv *priv,
 839                                 struct list_head *dst,
 840                                 struct list_head *src)
 841 {
 842         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 843         bool found;
 844
 845         /* Find all the entries that should be removed from dst,
 846          * These are the entries that are not found in src
 847          */
 848         list_for_each_entry(dst_tmp, dst, list) {
 849                 found = false;
 850                 list_for_each_entry(src_tmp, src, list) {
 851                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 852                                 found = true;
 853                                 break;
 854                         }
 855                 }
 856                 if (!found)
 857                         dst_tmp->action = MCLIST_REM;
 858         }
 859
 860         /* Add entries that exist in src but not in dst
 861          * mark them as need to add
 862          */
 863         list_for_each_entry(src_tmp, src, list) {
 864                 found = false;
 865                 list_for_each_entry(dst_tmp, dst, list) {
 866                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 867                                 dst_tmp->action = MCLIST_NONE;
 868                                 found = true;
 869                                 break;
 870                         }
 871                 }
 872                 if (!found) {
 873                         new_mc = kmemdup(src_tmp,
 874                                          sizeof(struct mlx4_en_mc_list),
 875                                          GFP_KERNEL);
 876                         if (!new_mc)
 877                                 return;
 878
 879                         new_mc->action = MCLIST_ADD;
 880                         list_add_tail(&new_mc->list, dst);
 881                 }
 882         }
 883 }
 884
 885 static void mlx4_en_set_rx_mode(struct net_device *dev)
 886 {
 887         struct mlx4_en_priv *priv = netdev_priv(dev);
 888
 889         if (!priv->port_up)
 890                 return;
 891
 892         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 893 }
 894
 895 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 896                                      struct mlx4_en_dev *mdev)
 897 {
 898         int err = 0;
 899
 900         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 901                 if (netif_msg_rx_status(priv))
 902                         en_warn(priv, "Entering promiscuous mode\n");
 903                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 904
 905                 /* Enable promiscouos mode */
 906                 switch (mdev->dev->caps.steering_mode) {
 907                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 908                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 909                                                           priv->port,
 910                                                           priv->base_qpn,
 911                                                           MLX4_FS_ALL_DEFAULT);
 912                         if (err)
 913                                 en_err(priv, "Failed enabling promiscuous mode\n");
 914                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 915                         break;
 916
 917                 case MLX4_STEERING_MODE_B0:
 918                         err = mlx4_unicast_promisc_add(mdev->dev,
 919                                                        priv->base_qpn,
 920                                                        priv->port);
 921                         if (err)
 922                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 923
 924                         /* Add the default qp number as multicast
 925                          * promisc
 926                          */
 927                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 928                                 err = mlx4_multicast_promisc_add(mdev->dev,
 929                                                                  priv->base_qpn,
 930                                                                  priv->port);
 931                                 if (err)
 932                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 933                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 934                         }
 935                         break;
 936
 937                 case MLX4_STEERING_MODE_A0:
 938                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 939                                                      priv->port,
 940                                                      priv->base_qpn,
 941                                                      1);
 942                         if (err)
 943                                 en_err(priv, "Failed enabling promiscuous mode\n");
 944                         break;
 945                 }
 946
 947                 /* Disable port multicast filter (unconditionally) */
 948                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 949                                           0, MLX4_MCAST_DISABLE);
 950                 if (err)
 951                         en_err(priv, "Failed disabling multicast filter\n");
 952         }
 953 }
 954
 955 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 956                                        struct mlx4_en_dev *mdev)
 957 {
 958         int err = 0;
 959
 960         if (netif_msg_rx_status(priv))
 961                 en_warn(priv, "Leaving promiscuous mode\n");
 962         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 963
 964         /* Disable promiscouos mode */
 965         switch (mdev->dev->caps.steering_mode) {
 966         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 967                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 968                                                      priv->port,
 969                                                      MLX4_FS_ALL_DEFAULT);
 970                 if (err)
 971                         en_err(priv, "Failed disabling promiscuous mode\n");
 972                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 973                 break;
 974
 975         case MLX4_STEERING_MODE_B0:
 976                 err = mlx4_unicast_promisc_remove(mdev->dev,
 977                                                   priv->base_qpn,
 978                                                   priv->port);
 979                 if (err)
 980                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 981                 /* Disable Multicast promisc */
 982                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 983                         err = mlx4_multicast_promisc_remove(mdev->dev,
 984                                                             priv->base_qpn,
 985                                                             priv->port);
 986                         if (err)
 987                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 988                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 989                 }
 990                 break;
 991
 992         case MLX4_STEERING_MODE_A0:
 993                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 994                                              priv->port,
 995                                              priv->base_qpn, 0);
 996                 if (err)
 997                         en_err(priv, "Failed disabling promiscuous mode\n");
 998                 break;
 999         }
1000 }
1001
1002 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
1003                                  struct net_device *dev,
1004                                  struct mlx4_en_dev *mdev)
1005 {
1006         struct mlx4_en_mc_list *mclist, *tmp;
1007         u64 mcast_addr = 0;
1008         u8 mc_list[16] = {0};
1009         int err = 0;
1010
1011         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
1012         if (dev->flags & IFF_ALLMULTI) {
1013                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1014                                           0, MLX4_MCAST_DISABLE);
1015                 if (err)
1016                         en_err(priv, "Failed disabling multicast filter\n");
1017
1018                 /* Add the default qp number as multicast promisc */
1019                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
1020                         switch (mdev->dev->caps.steering_mode) {
1021                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
1022                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
1023                                                                   priv->port,
1024                                                                   priv->base_qpn,
1025                                                                   MLX4_FS_MC_DEFAULT);
1026                                 break;
1027
1028                         case MLX4_STEERING_MODE_B0:
1029                                 err = mlx4_multicast_promisc_add(mdev->dev,
1030                                                                  priv->base_qpn,
1031                                                                  priv->port);
1032                                 break;
1033
1034                         case MLX4_STEERING_MODE_A0:
1035                                 break;
1036                         }
1037                         if (err)
1038                                 en_err(priv, "Failed entering multicast promisc mode\n");
1039                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
1040                 }
1041         } else {
1042                 /* Disable Multicast promisc */
1043                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1044                         switch (mdev->dev->caps.steering_mode) {
1045                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
1046                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
1047                                                                      priv->port,
1048                                                                      MLX4_FS_MC_DEFAULT);
1049                                 break;
1050
1051                         case MLX4_STEERING_MODE_B0:
1052                                 err = mlx4_multicast_promisc_remove(mdev->dev,
1053                                                                     priv->base_qpn,
1054                                                                     priv->port);
1055                                 break;
1056
1057                         case MLX4_STEERING_MODE_A0:
1058                                 break;
1059                         }
1060                         if (err)
1061                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
1062                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1063                 }
1064
1065                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1066                                           0, MLX4_MCAST_DISABLE);
1067                 if (err)
1068                         en_err(priv, "Failed disabling multicast filter\n");
1069
1070                 /* Flush mcast filter and init it with broadcast address */
1071                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
1072                                     1, MLX4_MCAST_CONFIG);
1073
1074                 /* Update multicast list - we cache all addresses so they won't
1075                  * change while HW is updated holding the command semaphor */
1076                 netif_addr_lock_bh(dev);
1077                 mlx4_en_cache_mclist(dev);
1078                 netif_addr_unlock_bh(dev);
1079                 list_for_each_entry(mclist, &priv->mc_list, list) {
1080                         mcast_addr = ether_addr_to_u64(mclist->addr);
1081                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
1082                                             mcast_addr, 0, MLX4_MCAST_CONFIG);
1083                 }
1084                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1085                                           0, MLX4_MCAST_ENABLE);
1086                 if (err)
1087                         en_err(priv, "Failed enabling multicast filter\n");
1088
1089                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1090                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1091                         if (mclist->action == MCLIST_REM) {
1092                                 /* detach this address and delete from list */
1093                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1094                                 mc_list[5] = priv->port;
1095                                 err = mlx4_multicast_detach(mdev->dev,
1096                                                             priv->rss_map.indir_qp,
1097                                                             mc_list,
1098                                                             MLX4_PROT_ETH,
1099                                                             mclist->reg_id);
1100                                 if (err)
1101                                         en_err(priv, "Fail to detach multicast address\n");
1102
1103                                 if (mclist->tunnel_reg_id) {
1104                                         err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1105                                         if (err)
1106                                                 en_err(priv, "Failed to detach multicast address\n");
1107                                 }
1108
1109                                 /* remove from list */
1110                                 list_del(&mclist->list);
1111                                 kfree(mclist);
1112                         } else if (mclist->action == MCLIST_ADD) {
1113                                 /* attach the address */
1114                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1115                                 /* needed for B0 steering support */
1116                                 mc_list[5] = priv->port;
1117                                 err = mlx4_multicast_attach(mdev->dev,
1118                                                             priv->rss_map.indir_qp,
1119                                                             mc_list,
1120                                                             priv->port, 0,
1121                                                             MLX4_PROT_ETH,
1122                                                             &mclist->reg_id);
1123                                 if (err)
1124                                         en_err(priv, "Fail to attach multicast address\n");
1125
1126                                 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1127                                                                &mclist->tunnel_reg_id);
1128                                 if (err)
1129                                         en_err(priv, "Failed to attach multicast address\n");
1130                         }
1131                 }
1132         }
1133 }
1134
1135 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1136                                  struct net_device *dev,
1137                                  struct mlx4_en_dev *mdev)
1138 {
1139         struct netdev_hw_addr *ha;
1140         struct mlx4_mac_entry *entry;
1141         struct hlist_node *tmp;
1142         bool found;
1143         u64 mac;
1144         int err = 0;
1145         struct hlist_head *bucket;
1146         unsigned int i;
1147         int removed = 0;
1148         u32 prev_flags;
1149
1150         /* Note that we do not need to protect our mac_hash traversal with rcu,
1151          * since all modification code is protected by mdev->state_lock
1152          */
1153
1154         /* find what to remove */
1155         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1156                 bucket = &priv->mac_hash[i];
1157                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1158                         found = false;
1159                         netdev_for_each_uc_addr(ha, dev) {
1160                                 if (ether_addr_equal_64bits(entry->mac,
1161                                                             ha->addr)) {
1162                                         found = true;
1163                                         break;
1164                                 }
1165                         }
1166
1167                         /* MAC address of the port is not in uc list */
1168                         if (ether_addr_equal_64bits(entry->mac,
1169                                                     priv->current_mac))
1170                                 found = true;
1171
1172                         if (!found) {
1173                                 mac = ether_addr_to_u64(entry->mac);
1174                                 mlx4_en_uc_steer_release(priv, entry->mac,
1175                                                          priv->base_qpn,
1176                                                          entry->reg_id);
1177                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1178
1179                                 hlist_del_rcu(&entry->hlist);
1180                                 kfree_rcu(entry, rcu);
1181                                 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1182                                        entry->mac, priv->port);
1183                                 ++removed;
1184                         }
1185                 }
1186         }
1187
1188         /* if we didn't remove anything, there is no use in trying to add
1189          * again once we are in a forced promisc mode state
1190          */
1191         if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1192                 return;
1193
1194         prev_flags = priv->flags;
1195         priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1196
1197         /* find what to add */
1198         netdev_for_each_uc_addr(ha, dev) {
1199                 found = false;
1200                 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1201                 hlist_for_each_entry(entry, bucket, hlist) {
1202                         if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1203                                 found = true;
1204                                 break;
1205                         }
1206                 }
1207
1208                 if (!found) {
1209                         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1210                         if (!entry) {
1211                                 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1212                                        ha->addr, priv->port);
1213                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1214                                 break;
1215                         }
1216                         mac = ether_addr_to_u64(ha->addr);
1217                         memcpy(entry->mac, ha->addr, ETH_ALEN);
1218                         err = mlx4_register_mac(mdev->dev, priv->port, mac);
1219                         if (err < 0) {
1220                                 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1221                                        ha->addr, priv->port, err);
1222                                 kfree(entry);
1223                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1224                                 break;
1225                         }
1226                         err = mlx4_en_uc_steer_add(priv, ha->addr,
1227                                                    &priv->base_qpn,
1228                                                    &entry->reg_id);
1229                         if (err) {
1230                                 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1231                                        ha->addr, priv->port, err);
1232                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1233                                 kfree(entry);
1234                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1235                                 break;
1236                         } else {
1237                                 unsigned int mac_hash;
1238                                 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1239                                        ha->addr, priv->port);
1240                                 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1241                                 bucket = &priv->mac_hash[mac_hash];
1242                                 hlist_add_head_rcu(&entry->hlist, bucket);
1243                         }
1244                 }
1245         }
1246
1247         if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1248                 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1249                         priv->port);
1250         } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1251                 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1252                         priv->port);
1253         }
1254 }
1255
1256 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1257 {
1258         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1259                                                  rx_mode_task);
1260         struct mlx4_en_dev *mdev = priv->mdev;
1261         struct net_device *dev = priv->dev;
1262
1263         mutex_lock(&mdev->state_lock);
1264         if (!mdev->device_up) {
1265                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1266                 goto out;
1267         }
1268         if (!priv->port_up) {
1269                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1270                 goto out;
1271         }
1272
1273         if (!netif_carrier_ok(dev)) {
1274                 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1275                         if (priv->port_state.link_state) {
1276                                 netif_carrier_on(dev);
1277                                 en_dbg(LINK, priv, "Link Up\n");
1278                         }
1279                 }
1280         }
1281
1282         if (dev->priv_flags & IFF_UNICAST_FLT)
1283                 mlx4_en_do_uc_filter(priv, dev, mdev);
1284
1285         /* Promsicuous mode: disable all filters */
1286         if ((dev->flags & IFF_PROMISC) ||
1287             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1288                 mlx4_en_set_promisc_mode(priv, mdev);
1289                 goto out;
1290         }
1291
1292         /* Not in promiscuous mode */
1293         if (priv->flags & MLX4_EN_FLAG_PROMISC)
1294                 mlx4_en_clear_promisc_mode(priv, mdev);
1295
1296         mlx4_en_do_multicast(priv, dev, mdev);
1297 out:
1298         mutex_unlock(&mdev->state_lock);
1299 }
1300
1301 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv)
1302 {
1303         u64 reg_id;
1304         int err = 0;
1305         int *qpn = &priv->base_qpn;
1306         struct mlx4_mac_entry *entry;
1307
1308         err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
1309         if (err)
1310                 return err;
1311
1312         err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
1313                                        &priv->tunnel_reg_id);
1314         if (err)
1315                 goto tunnel_err;
1316
1317         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1318         if (!entry) {
1319                 err = -ENOMEM;
1320                 goto alloc_err;
1321         }
1322
1323         memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
1324         memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
1325         entry->reg_id = reg_id;
1326         hlist_add_head_rcu(&entry->hlist,
1327                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
1328
1329         return 0;
1330
1331 alloc_err:
1332         if (priv->tunnel_reg_id)
1333                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1334
1335 tunnel_err:
1336         mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
1337         return err;
1338 }
1339
1340 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv)
1341 {
1342         u64 mac;
1343         unsigned int i;
1344         int qpn = priv->base_qpn;
1345         struct hlist_head *bucket;
1346         struct hlist_node *tmp;
1347         struct mlx4_mac_entry *entry;
1348
1349         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1350                 bucket = &priv->mac_hash[i];
1351                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1352                         mac = ether_addr_to_u64(entry->mac);
1353                         en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n",
1354                                entry->mac);
1355                         mlx4_en_uc_steer_release(priv, entry->mac,
1356                                                  qpn, entry->reg_id);
1357
1358                         mlx4_unregister_mac(priv->mdev->dev, priv->port, mac);
1359                         hlist_del_rcu(&entry->hlist);
1360                         kfree_rcu(entry, rcu);
1361                 }
1362         }
1363
1364         if (priv->tunnel_reg_id) {
1365                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1366                 priv->tunnel_reg_id = 0;
1367         }
1368 }
1369
1370 static void mlx4_en_tx_timeout(struct net_device *dev, unsigned int txqueue)
1371 {
1372         struct mlx4_en_priv *priv = netdev_priv(dev);
1373         struct mlx4_en_dev *mdev = priv->mdev;
1374         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][txqueue];
1375
1376         if (netif_msg_timer(priv))
1377                 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1378
1379         en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1380                 txqueue, tx_ring->qpn, tx_ring->sp_cqn,
1381                 tx_ring->cons, tx_ring->prod);
1382
1383         priv->port_stats.tx_timeout++;
1384         if (!test_and_set_bit(MLX4_EN_STATE_FLAG_RESTARTING, &priv->state)) {
1385                 en_dbg(DRV, priv, "Scheduling port restart\n");
1386                 queue_work(mdev->workqueue, &priv->restart_task);
1387         }
1388 }
1389
1390
1391 static void
1392 mlx4_en_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1393 {
1394         struct mlx4_en_priv *priv = netdev_priv(dev);
1395
1396         spin_lock_bh(&priv->stats_lock);
1397         mlx4_en_fold_software_stats(dev);
1398         netdev_stats_to_stats64(stats, &dev->stats);
1399         spin_unlock_bh(&priv->stats_lock);
1400 }
1401
1402 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1403 {
1404         struct mlx4_en_cq *cq;
1405         int i, t;
1406
1407         /* If we haven't received a specific coalescing setting
1408          * (module param), we set the moderation parameters as follows:
1409          * - moder_cnt is set to the number of mtu sized packets to
1410          *   satisfy our coalescing target.
1411          * - moder_time is set to a fixed value.
1412          */
1413         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1414         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1415         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1416         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1417         en_dbg(INTR, priv, "Default coalescing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1418                priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1419
1420         /* Setup cq moderation params */
1421         for (i = 0; i < priv->rx_ring_num; i++) {
1422                 cq = priv->rx_cq[i];
1423                 cq->moder_cnt = priv->rx_frames;
1424                 cq->moder_time = priv->rx_usecs;
1425                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1426                 priv->last_moder_packets[i] = 0;
1427                 priv->last_moder_bytes[i] = 0;
1428         }
1429
1430         for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1431                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1432                         cq = priv->tx_cq[t][i];
1433                         cq->moder_cnt = priv->tx_frames;
1434                         cq->moder_time = priv->tx_usecs;
1435                 }
1436         }
1437
1438         /* Reset auto-moderation params */
1439         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1440         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1441         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1442         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1443         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1444         priv->adaptive_rx_coal = 1;
1445         priv->last_moder_jiffies = 0;
1446         priv->last_moder_tx_packets = 0;
1447 }
1448
1449 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1450 {
1451         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1452         u32 pkt_rate_high, pkt_rate_low;
1453         struct mlx4_en_cq *cq;
1454         unsigned long packets;
1455         unsigned long rate;
1456         unsigned long avg_pkt_size;
1457         unsigned long rx_packets;
1458         unsigned long rx_bytes;
1459         unsigned long rx_pkt_diff;
1460         int moder_time;
1461         int ring, err;
1462
1463         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1464                 return;
1465
1466         pkt_rate_low = READ_ONCE(priv->pkt_rate_low);
1467         pkt_rate_high = READ_ONCE(priv->pkt_rate_high);
1468
1469         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1470                 rx_packets = READ_ONCE(priv->rx_ring[ring]->packets);
1471                 rx_bytes = READ_ONCE(priv->rx_ring[ring]->bytes);
1472
1473                 rx_pkt_diff = rx_packets - priv->last_moder_packets[ring];
1474                 packets = rx_pkt_diff;
1475                 rate = packets * HZ / period;
1476                 avg_pkt_size = packets ? (rx_bytes -
1477                                 priv->last_moder_bytes[ring]) / packets : 0;
1478
1479                 /* Apply auto-moderation only when packet rate
1480                  * exceeds a rate that it matters */
1481                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1482                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1483                         if (rate <= pkt_rate_low)
1484                                 moder_time = priv->rx_usecs_low;
1485                         else if (rate >= pkt_rate_high)
1486                                 moder_time = priv->rx_usecs_high;
1487                         else
1488                                 moder_time = (rate - pkt_rate_low) *
1489                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1490                                         (pkt_rate_high - pkt_rate_low) +
1491                                         priv->rx_usecs_low;
1492                 } else {
1493                         moder_time = priv->rx_usecs_low;
1494                 }
1495
1496                 cq = priv->rx_cq[ring];
1497                 if (moder_time != priv->last_moder_time[ring] ||
1498                     cq->moder_cnt != priv->rx_frames) {
1499                         priv->last_moder_time[ring] = moder_time;
1500                         cq->moder_time = moder_time;
1501                         cq->moder_cnt = priv->rx_frames;
1502                         err = mlx4_en_set_cq_moder(priv, cq);
1503                         if (err)
1504                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1505                                        ring);
1506                 }
1507                 priv->last_moder_packets[ring] = rx_packets;
1508                 priv->last_moder_bytes[ring] = rx_bytes;
1509         }
1510
1511         priv->last_moder_jiffies = jiffies;
1512 }
1513
1514 static void mlx4_en_do_get_stats(struct work_struct *work)
1515 {
1516         struct delayed_work *delay = to_delayed_work(work);
1517         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1518                                                  stats_task);
1519         struct mlx4_en_dev *mdev = priv->mdev;
1520         int err;
1521
1522         mutex_lock(&mdev->state_lock);
1523         if (mdev->device_up) {
1524                 if (priv->port_up) {
1525                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1526                         if (err)
1527                                 en_dbg(HW, priv, "Could not update stats\n");
1528
1529                         mlx4_en_auto_moderation(priv);
1530                 }
1531
1532                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1533         }
1534         if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1535                 mlx4_en_do_set_mac(priv, priv->current_mac);
1536                 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1537         }
1538         mutex_unlock(&mdev->state_lock);
1539 }
1540
1541 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1542  * periodically
1543  */
1544 static void mlx4_en_service_task(struct work_struct *work)
1545 {
1546         struct delayed_work *delay = to_delayed_work(work);
1547         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1548                                                  service_task);
1549         struct mlx4_en_dev *mdev = priv->mdev;
1550
1551         mutex_lock(&mdev->state_lock);
1552         if (mdev->device_up) {
1553                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1554                         mlx4_en_ptp_overflow_check(mdev);
1555
1556                 mlx4_en_recover_from_oom(priv);
1557                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1558                                    SERVICE_TASK_DELAY);
1559         }
1560         mutex_unlock(&mdev->state_lock);
1561 }
1562
1563 static void mlx4_en_linkstate(struct mlx4_en_priv *priv)
1564 {
1565         struct mlx4_en_port_state *port_state = &priv->port_state;
1566         struct mlx4_en_dev *mdev = priv->mdev;
1567         struct net_device *dev = priv->dev;
1568         bool up;
1569
1570         if (mlx4_en_QUERY_PORT(mdev, priv->port))
1571                 port_state->link_state = MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN;
1572
1573         up = port_state->link_state == MLX4_PORT_STATE_DEV_EVENT_PORT_UP;
1574         if (up == netif_carrier_ok(dev))
1575                 netif_carrier_event(dev);
1576         if (!up) {
1577                 en_info(priv, "Link Down\n");
1578                 netif_carrier_off(dev);
1579         } else {
1580                 en_info(priv, "Link Up\n");
1581                 netif_carrier_on(dev);
1582         }
1583 }
1584
1585 static void mlx4_en_linkstate_work(struct work_struct *work)
1586 {
1587         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1588                                                  linkstate_task);
1589         struct mlx4_en_dev *mdev = priv->mdev;
1590
1591         mutex_lock(&mdev->state_lock);
1592         mlx4_en_linkstate(priv);
1593         mutex_unlock(&mdev->state_lock);
1594 }
1595
1596 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1597 {
1598         struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1599         int numa_node = priv->mdev->dev->numa_node;
1600
1601         if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1602                 return -ENOMEM;
1603
1604         cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node),
1605                         ring->affinity_mask);
1606         return 0;
1607 }
1608
1609 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1610 {
1611         free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1612 }
1613
1614 static void mlx4_en_init_recycle_ring(struct mlx4_en_priv *priv,
1615                                       int tx_ring_idx)
1616 {
1617         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX_XDP][tx_ring_idx];
1618         int rr_index = tx_ring_idx;
1619
1620         tx_ring->free_tx_desc = mlx4_en_recycle_tx_desc;
1621         tx_ring->recycle_ring = priv->rx_ring[rr_index];
1622         en_dbg(DRV, priv, "Set tx_ring[%d][%d]->recycle_ring = rx_ring[%d]\n",
1623                TX_XDP, tx_ring_idx, rr_index);
1624 }
1625
1626 int mlx4_en_start_port(struct net_device *dev)
1627 {
1628         struct mlx4_en_priv *priv = netdev_priv(dev);
1629         struct mlx4_en_dev *mdev = priv->mdev;
1630         struct mlx4_en_cq *cq;
1631         struct mlx4_en_tx_ring *tx_ring;
1632         int rx_index = 0;
1633         int err = 0;
1634         int i, t;
1635         int j;
1636         u8 mc_list[16] = {0};
1637
1638         if (priv->port_up) {
1639                 en_dbg(DRV, priv, "start port called while port already up\n");
1640                 return 0;
1641         }
1642
1643         INIT_LIST_HEAD(&priv->mc_list);
1644         INIT_LIST_HEAD(&priv->curr_list);
1645         INIT_LIST_HEAD(&priv->ethtool_list);
1646         memset(&priv->ethtool_rules[0], 0,
1647                sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1648
1649         /* Calculate Rx buf size */
1650         dev->mtu = min(dev->mtu, priv->max_mtu);
1651         mlx4_en_calc_rx_buf(dev);
1652         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1653
1654         /* Configure rx cq's and rings */
1655         err = mlx4_en_activate_rx_rings(priv);
1656         if (err) {
1657                 en_err(priv, "Failed to activate RX rings\n");
1658                 return err;
1659         }
1660         for (i = 0; i < priv->rx_ring_num; i++) {
1661                 cq = priv->rx_cq[i];
1662
1663                 err = mlx4_en_init_affinity_hint(priv, i);
1664                 if (err) {
1665                         en_err(priv, "Failed preparing IRQ affinity hint\n");
1666                         goto cq_err;
1667                 }
1668
1669                 err = mlx4_en_activate_cq(priv, cq, i);
1670                 if (err) {
1671                         en_err(priv, "Failed activating Rx CQ\n");
1672                         mlx4_en_free_affinity_hint(priv, i);
1673                         goto cq_err;
1674                 }
1675
1676                 for (j = 0; j < cq->size; j++) {
1677                         struct mlx4_cqe *cqe = NULL;
1678
1679                         cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) +
1680                               priv->cqe_factor;
1681                         cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1682                 }
1683
1684                 err = mlx4_en_set_cq_moder(priv, cq);
1685                 if (err) {
1686                         en_err(priv, "Failed setting cq moderation parameters\n");
1687                         mlx4_en_deactivate_cq(priv, cq);
1688                         mlx4_en_free_affinity_hint(priv, i);
1689                         goto cq_err;
1690                 }
1691                 mlx4_en_arm_cq(priv, cq);
1692                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1693                 ++rx_index;
1694         }
1695
1696         /* Set qp number */
1697         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1698         err = mlx4_en_get_qp(priv);
1699         if (err) {
1700                 en_err(priv, "Failed getting eth qp\n");
1701                 goto cq_err;
1702         }
1703         mdev->mac_removed[priv->port] = 0;
1704
1705         priv->counter_index =
1706                         mlx4_get_default_counter_index(mdev->dev, priv->port);
1707
1708         err = mlx4_en_config_rss_steer(priv);
1709         if (err) {
1710                 en_err(priv, "Failed configuring rss steering\n");
1711                 goto mac_err;
1712         }
1713
1714         err = mlx4_en_create_drop_qp(priv);
1715         if (err)
1716                 goto rss_err;
1717
1718         /* Configure tx cq's and rings */
1719         for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1720                 u8 num_tx_rings_p_up = t == TX ?
1721                         priv->num_tx_rings_p_up : priv->tx_ring_num[t];
1722
1723                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1724                         /* Configure cq */
1725                         cq = priv->tx_cq[t][i];
1726                         err = mlx4_en_activate_cq(priv, cq, i);
1727                         if (err) {
1728                                 en_err(priv, "Failed allocating Tx CQ\n");
1729                                 goto tx_err;
1730                         }
1731                         err = mlx4_en_set_cq_moder(priv, cq);
1732                         if (err) {
1733                                 en_err(priv, "Failed setting cq moderation parameters\n");
1734                                 mlx4_en_deactivate_cq(priv, cq);
1735                                 goto tx_err;
1736                         }
1737                         en_dbg(DRV, priv,
1738                                "Resetting index of collapsed CQ:%d to -1\n", i);
1739                         cq->buf->wqe_index = cpu_to_be16(0xffff);
1740
1741                         /* Configure ring */
1742                         tx_ring = priv->tx_ring[t][i];
1743                         err = mlx4_en_activate_tx_ring(priv, tx_ring,
1744                                                        cq->mcq.cqn,
1745                                                        i / num_tx_rings_p_up);
1746                         if (err) {
1747                                 en_err(priv, "Failed allocating Tx ring\n");
1748                                 mlx4_en_deactivate_cq(priv, cq);
1749                                 goto tx_err;
1750                         }
1751                         clear_bit(MLX4_EN_TX_RING_STATE_RECOVERING, &tx_ring->state);
1752                         if (t != TX_XDP) {
1753                                 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1754                                 tx_ring->recycle_ring = NULL;
1755
1756                                 /* Arm CQ for TX completions */
1757                                 mlx4_en_arm_cq(priv, cq);
1758
1759                         } else {
1760                                 mlx4_en_init_tx_xdp_ring_descs(priv, tx_ring);
1761                                 mlx4_en_init_recycle_ring(priv, i);
1762                                 /* XDP TX CQ should never be armed */
1763                         }
1764
1765                         /* Set initial ownership of all Tx TXBBs to SW (1) */
1766                         for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1767                                 *((u32 *)(tx_ring->buf + j)) = 0xffffffff;
1768                 }
1769         }
1770
1771         /* Configure port */
1772         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1773                                     priv->rx_skb_size + ETH_FCS_LEN,
1774                                     priv->prof->tx_pause,
1775                                     priv->prof->tx_ppp,
1776                                     priv->prof->rx_pause,
1777                                     priv->prof->rx_ppp);
1778         if (err) {
1779                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1780                        priv->port, err);
1781                 goto tx_err;
1782         }
1783
1784         err = mlx4_SET_PORT_user_mtu(mdev->dev, priv->port, dev->mtu);
1785         if (err) {
1786                 en_err(priv, "Failed to pass user MTU(%d) to Firmware for port %d, with error %d\n",
1787                        dev->mtu, priv->port, err);
1788                 goto tx_err;
1789         }
1790
1791         /* Set default qp number */
1792         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1793         if (err) {
1794                 en_err(priv, "Failed setting default qp numbers\n");
1795                 goto tx_err;
1796         }
1797
1798         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1799                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1800                 if (err) {
1801                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1802                                err);
1803                         goto tx_err;
1804                 }
1805         }
1806
1807         /* Init port */
1808         en_dbg(HW, priv, "Initializing port\n");
1809         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1810         if (err) {
1811                 en_err(priv, "Failed Initializing port\n");
1812                 goto tx_err;
1813         }
1814
1815         /* Set Unicast and VXLAN steering rules */
1816         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 &&
1817             mlx4_en_set_rss_steer_rules(priv))
1818                 mlx4_warn(mdev, "Failed setting steering rules\n");
1819
1820         /* Attach rx QP to bradcast address */
1821         eth_broadcast_addr(&mc_list[10]);
1822         mc_list[5] = priv->port; /* needed for B0 steering support */
1823         if (mlx4_multicast_attach(mdev->dev, priv->rss_map.indir_qp, mc_list,
1824                                   priv->port, 0, MLX4_PROT_ETH,
1825                                   &priv->broadcast_id))
1826                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1827
1828         /* Must redo promiscuous mode setup. */
1829         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1830
1831         /* Schedule multicast task to populate multicast list */
1832         queue_work(mdev->workqueue, &priv->rx_mode_task);
1833
1834         if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1835                 udp_tunnel_nic_reset_ntf(dev);
1836
1837         priv->port_up = true;
1838
1839         /* Process all completions if exist to prevent
1840          * the queues freezing if they are full
1841          */
1842         for (i = 0; i < priv->rx_ring_num; i++) {
1843                 local_bh_disable();
1844                 napi_schedule(&priv->rx_cq[i]->napi);
1845                 local_bh_enable();
1846         }
1847
1848         clear_bit(MLX4_EN_STATE_FLAG_RESTARTING, &priv->state);
1849         netif_tx_start_all_queues(dev);
1850         netif_device_attach(dev);
1851
1852         return 0;
1853
1854 tx_err:
1855         if (t == MLX4_EN_NUM_TX_TYPES) {
1856                 t--;
1857                 i = priv->tx_ring_num[t];
1858         }
1859         while (t >= 0) {
1860                 while (i--) {
1861                         mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]);
1862                         mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]);
1863                 }
1864                 if (!t--)
1865                         break;
1866                 i = priv->tx_ring_num[t];
1867         }
1868         mlx4_en_destroy_drop_qp(priv);
1869 rss_err:
1870         mlx4_en_release_rss_steer(priv);
1871 mac_err:
1872         mlx4_en_put_qp(priv);
1873 cq_err:
1874         while (rx_index--) {
1875                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1876                 mlx4_en_free_affinity_hint(priv, rx_index);
1877         }
1878         for (i = 0; i < priv->rx_ring_num; i++)
1879                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1880
1881         return err; /* need to close devices */
1882 }
1883
1884
1885 void mlx4_en_stop_port(struct net_device *dev, int detach)
1886 {
1887         struct mlx4_en_priv *priv = netdev_priv(dev);
1888         struct mlx4_en_dev *mdev = priv->mdev;
1889         struct mlx4_en_mc_list *mclist, *tmp;
1890         struct ethtool_flow_id *flow, *tmp_flow;
1891         int i, t;
1892         u8 mc_list[16] = {0};
1893
1894         if (!priv->port_up) {
1895                 en_dbg(DRV, priv, "stop port called while port already down\n");
1896                 return;
1897         }
1898
1899         /* close port*/
1900         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1901
1902         /* Synchronize with tx routine */
1903         netif_tx_lock_bh(dev);
1904         if (detach)
1905                 netif_device_detach(dev);
1906         netif_tx_stop_all_queues(dev);
1907         netif_tx_unlock_bh(dev);
1908
1909         netif_tx_disable(dev);
1910
1911         spin_lock_bh(&priv->stats_lock);
1912         mlx4_en_fold_software_stats(dev);
1913         /* Set port as not active */
1914         priv->port_up = false;
1915         spin_unlock_bh(&priv->stats_lock);
1916
1917         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1918
1919         /* Promsicuous mode */
1920         if (mdev->dev->caps.steering_mode ==
1921             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1922                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1923                                  MLX4_EN_FLAG_MC_PROMISC);
1924                 mlx4_flow_steer_promisc_remove(mdev->dev,
1925                                                priv->port,
1926                                                MLX4_FS_ALL_DEFAULT);
1927                 mlx4_flow_steer_promisc_remove(mdev->dev,
1928                                                priv->port,
1929                                                MLX4_FS_MC_DEFAULT);
1930         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1931                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1932
1933                 /* Disable promiscouos mode */
1934                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1935                                             priv->port);
1936
1937                 /* Disable Multicast promisc */
1938                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1939                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1940                                                       priv->port);
1941                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1942                 }
1943         }
1944
1945         /* Detach All multicasts */
1946         eth_broadcast_addr(&mc_list[10]);
1947         mc_list[5] = priv->port; /* needed for B0 steering support */
1948         mlx4_multicast_detach(mdev->dev, priv->rss_map.indir_qp, mc_list,
1949                               MLX4_PROT_ETH, priv->broadcast_id);
1950         list_for_each_entry(mclist, &priv->curr_list, list) {
1951                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1952                 mc_list[5] = priv->port;
1953                 mlx4_multicast_detach(mdev->dev, priv->rss_map.indir_qp,
1954                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1955                 if (mclist->tunnel_reg_id)
1956                         mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1957         }
1958         mlx4_en_clear_list(dev);
1959         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1960                 list_del(&mclist->list);
1961                 kfree(mclist);
1962         }
1963
1964         /* Flush multicast filter */
1965         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1966
1967         /* Remove flow steering rules for the port*/
1968         if (mdev->dev->caps.steering_mode ==
1969             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1970                 ASSERT_RTNL();
1971                 list_for_each_entry_safe(flow, tmp_flow,
1972                                          &priv->ethtool_list, list) {
1973                         mlx4_flow_detach(mdev->dev, flow->id);
1974                         list_del(&flow->list);
1975                 }
1976         }
1977
1978         mlx4_en_destroy_drop_qp(priv);
1979
1980         /* Free TX Rings */
1981         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
1982                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1983                         mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]);
1984                         mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]);
1985                 }
1986         }
1987         msleep(10);
1988
1989         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++)
1990                 for (i = 0; i < priv->tx_ring_num[t]; i++)
1991                         mlx4_en_free_tx_buf(dev, priv->tx_ring[t][i]);
1992
1993         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1994                 mlx4_en_delete_rss_steer_rules(priv);
1995
1996         /* Free RSS qps */
1997         mlx4_en_release_rss_steer(priv);
1998
1999         /* Unregister Mac address for the port */
2000         mlx4_en_put_qp(priv);
2001         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
2002                 mdev->mac_removed[priv->port] = 1;
2003
2004         /* Free RX Rings */
2005         for (i = 0; i < priv->rx_ring_num; i++) {
2006                 struct mlx4_en_cq *cq = priv->rx_cq[i];
2007
2008                 napi_synchronize(&cq->napi);
2009                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
2010                 mlx4_en_deactivate_cq(priv, cq);
2011
2012                 mlx4_en_free_affinity_hint(priv, i);
2013         }
2014 }
2015
2016 static void mlx4_en_restart(struct work_struct *work)
2017 {
2018         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2019                                                  restart_task);
2020         struct mlx4_en_dev *mdev = priv->mdev;
2021         struct net_device *dev = priv->dev;
2022
2023         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
2024
2025         rtnl_lock();
2026         mutex_lock(&mdev->state_lock);
2027         if (priv->port_up) {
2028                 mlx4_en_stop_port(dev, 1);
2029                 if (mlx4_en_start_port(dev))
2030                         en_err(priv, "Failed restarting port %d\n", priv->port);
2031         }
2032         mutex_unlock(&mdev->state_lock);
2033         rtnl_unlock();
2034 }
2035
2036 static void mlx4_en_clear_stats(struct net_device *dev)
2037 {
2038         struct mlx4_en_priv *priv = netdev_priv(dev);
2039         struct mlx4_en_dev *mdev = priv->mdev;
2040         struct mlx4_en_tx_ring **tx_ring;
2041         int i;
2042
2043         if (!mlx4_is_slave(mdev->dev))
2044                 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
2045                         en_dbg(HW, priv, "Failed dumping statistics\n");
2046
2047         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
2048         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
2049         memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats));
2050         memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats));
2051         memset(&priv->rx_priority_flowstats, 0,
2052                sizeof(priv->rx_priority_flowstats));
2053         memset(&priv->tx_priority_flowstats, 0,
2054                sizeof(priv->tx_priority_flowstats));
2055         memset(&priv->pf_stats, 0, sizeof(priv->pf_stats));
2056
2057         tx_ring = priv->tx_ring[TX];
2058         for (i = 0; i < priv->tx_ring_num[TX]; i++) {
2059                 tx_ring[i]->bytes = 0;
2060                 tx_ring[i]->packets = 0;
2061                 tx_ring[i]->tx_csum = 0;
2062                 tx_ring[i]->tx_dropped = 0;
2063                 tx_ring[i]->queue_stopped = 0;
2064                 tx_ring[i]->wake_queue = 0;
2065                 tx_ring[i]->tso_packets = 0;
2066                 tx_ring[i]->xmit_more = 0;
2067         }
2068         for (i = 0; i < priv->rx_ring_num; i++) {
2069                 priv->rx_ring[i]->bytes = 0;
2070                 priv->rx_ring[i]->packets = 0;
2071                 priv->rx_ring[i]->csum_ok = 0;
2072                 priv->rx_ring[i]->csum_none = 0;
2073                 priv->rx_ring[i]->csum_complete = 0;
2074         }
2075 }
2076
2077 static int mlx4_en_open(struct net_device *dev)
2078 {
2079         struct mlx4_en_priv *priv = netdev_priv(dev);
2080         struct mlx4_en_dev *mdev = priv->mdev;
2081         int err = 0;
2082
2083         mutex_lock(&mdev->state_lock);
2084
2085         if (!mdev->device_up) {
2086                 en_err(priv, "Cannot open - device down/disabled\n");
2087                 err = -EBUSY;
2088                 goto out;
2089         }
2090
2091         /* Reset HW statistics and SW counters */
2092         mlx4_en_clear_stats(dev);
2093
2094         err = mlx4_en_start_port(dev);
2095         if (err) {
2096                 en_err(priv, "Failed starting port:%d\n", priv->port);
2097                 goto out;
2098         }
2099         mlx4_en_linkstate(priv);
2100 out:
2101         mutex_unlock(&mdev->state_lock);
2102         return err;
2103 }
2104
2105
2106 static int mlx4_en_close(struct net_device *dev)
2107 {
2108         struct mlx4_en_priv *priv = netdev_priv(dev);
2109         struct mlx4_en_dev *mdev = priv->mdev;
2110
2111         en_dbg(IFDOWN, priv, "Close port called\n");
2112
2113         mutex_lock(&mdev->state_lock);
2114
2115         mlx4_en_stop_port(dev, 0);
2116         netif_carrier_off(dev);
2117
2118         mutex_unlock(&mdev->state_lock);
2119         return 0;
2120 }
2121
2122 static void mlx4_en_free_resources(struct mlx4_en_priv *priv)
2123 {
2124         int i, t;
2125
2126 #ifdef CONFIG_RFS_ACCEL
2127         priv->dev->rx_cpu_rmap = NULL;
2128 #endif
2129
2130         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2131                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2132                         if (priv->tx_ring[t] && priv->tx_ring[t][i])
2133                                 mlx4_en_destroy_tx_ring(priv,
2134                                                         &priv->tx_ring[t][i]);
2135                         if (priv->tx_cq[t] && priv->tx_cq[t][i])
2136                                 mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]);
2137                 }
2138                 kfree(priv->tx_ring[t]);
2139                 kfree(priv->tx_cq[t]);
2140         }
2141
2142         for (i = 0; i < priv->rx_ring_num; i++) {
2143                 if (priv->rx_ring[i])
2144                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2145                                 priv->prof->rx_ring_size, priv->stride);
2146                 if (priv->rx_cq[i])
2147                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2148         }
2149
2150 }
2151
2152 static int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
2153 {
2154         struct mlx4_en_port_profile *prof = priv->prof;
2155         int i, t;
2156         int node;
2157
2158         /* Create tx Rings */
2159         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2160                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2161                         node = cpu_to_node(i % num_online_cpus());
2162                         if (mlx4_en_create_cq(priv, &priv->tx_cq[t][i],
2163                                               prof->tx_ring_size, i, t, node))
2164                                 goto err;
2165
2166                         if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[t][i],
2167                                                    prof->tx_ring_size,
2168                                                    TXBB_SIZE, node, i))
2169                                 goto err;
2170                 }
2171         }
2172
2173         /* Create rx Rings */
2174         for (i = 0; i < priv->rx_ring_num; i++) {
2175                 node = cpu_to_node(i % num_online_cpus());
2176                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2177                                       prof->rx_ring_size, i, RX, node))
2178                         goto err;
2179
2180                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2181                                            prof->rx_ring_size, priv->stride,
2182                                            node, i))
2183                         goto err;
2184
2185         }
2186
2187 #ifdef CONFIG_RFS_ACCEL
2188         priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port);
2189 #endif
2190
2191         return 0;
2192
2193 err:
2194         en_err(priv, "Failed to allocate NIC resources\n");
2195         for (i = 0; i < priv->rx_ring_num; i++) {
2196                 if (priv->rx_ring[i])
2197                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2198                                                 prof->rx_ring_size,
2199                                                 priv->stride);
2200                 if (priv->rx_cq[i])
2201                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2202         }
2203         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2204                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2205                         if (priv->tx_ring[t][i])
2206                                 mlx4_en_destroy_tx_ring(priv,
2207                                                         &priv->tx_ring[t][i]);
2208                         if (priv->tx_cq[t][i])
2209                                 mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]);
2210                 }
2211         }
2212         return -ENOMEM;
2213 }
2214
2215
2216 static int mlx4_en_copy_priv(struct mlx4_en_priv *dst,
2217                              struct mlx4_en_priv *src,
2218                              struct mlx4_en_port_profile *prof)
2219 {
2220         int t;
2221
2222         memcpy(&dst->hwtstamp_config, &prof->hwtstamp_config,
2223                sizeof(dst->hwtstamp_config));
2224         dst->num_tx_rings_p_up = prof->num_tx_rings_p_up;
2225         dst->rx_ring_num = prof->rx_ring_num;
2226         dst->flags = prof->flags;
2227         dst->mdev = src->mdev;
2228         dst->port = src->port;
2229         dst->dev = src->dev;
2230         dst->prof = prof;
2231         dst->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2232                                          DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2233
2234         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2235                 dst->tx_ring_num[t] = prof->tx_ring_num[t];
2236                 if (!dst->tx_ring_num[t])
2237                         continue;
2238
2239                 dst->tx_ring[t] = kcalloc(MAX_TX_RINGS,
2240                                           sizeof(struct mlx4_en_tx_ring *),
2241                                           GFP_KERNEL);
2242                 if (!dst->tx_ring[t])
2243                         goto err_free_tx;
2244
2245                 dst->tx_cq[t] = kcalloc(MAX_TX_RINGS,
2246                                         sizeof(struct mlx4_en_cq *),
2247                                         GFP_KERNEL);
2248                 if (!dst->tx_cq[t]) {
2249                         kfree(dst->tx_ring[t]);
2250                         goto err_free_tx;
2251                 }
2252         }
2253
2254         return 0;
2255
2256 err_free_tx:
2257         while (t--) {
2258                 kfree(dst->tx_ring[t]);
2259                 kfree(dst->tx_cq[t]);
2260         }
2261         return -ENOMEM;
2262 }
2263
2264 static void mlx4_en_update_priv(struct mlx4_en_priv *dst,
2265                                 struct mlx4_en_priv *src)
2266 {
2267         int t;
2268         memcpy(dst->rx_ring, src->rx_ring,
2269                sizeof(struct mlx4_en_rx_ring *) * src->rx_ring_num);
2270         memcpy(dst->rx_cq, src->rx_cq,
2271                sizeof(struct mlx4_en_cq *) * src->rx_ring_num);
2272         memcpy(&dst->hwtstamp_config, &src->hwtstamp_config,
2273                sizeof(dst->hwtstamp_config));
2274         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2275                 dst->tx_ring_num[t] = src->tx_ring_num[t];
2276                 dst->tx_ring[t] = src->tx_ring[t];
2277                 dst->tx_cq[t] = src->tx_cq[t];
2278         }
2279         dst->num_tx_rings_p_up = src->num_tx_rings_p_up;
2280         dst->rx_ring_num = src->rx_ring_num;
2281         memcpy(dst->prof, src->prof, sizeof(struct mlx4_en_port_profile));
2282 }
2283
2284 int mlx4_en_try_alloc_resources(struct mlx4_en_priv *priv,
2285                                 struct mlx4_en_priv *tmp,
2286                                 struct mlx4_en_port_profile *prof,
2287                                 bool carry_xdp_prog)
2288 {
2289         struct bpf_prog *xdp_prog;
2290         int i, t, ret;
2291
2292         ret = mlx4_en_copy_priv(tmp, priv, prof);
2293         if (ret) {
2294                 en_warn(priv, "%s: mlx4_en_copy_priv() failed, return\n",
2295                         __func__);
2296                 return ret;
2297         }
2298
2299         if (mlx4_en_alloc_resources(tmp)) {
2300                 en_warn(priv,
2301                         "%s: Resource allocation failed, using previous configuration\n",
2302                         __func__);
2303                 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2304                         kfree(tmp->tx_ring[t]);
2305                         kfree(tmp->tx_cq[t]);
2306                 }
2307                 return -ENOMEM;
2308         }
2309
2310         /* All rx_rings has the same xdp_prog.  Pick the first one. */
2311         xdp_prog = rcu_dereference_protected(
2312                 priv->rx_ring[0]->xdp_prog,
2313                 lockdep_is_held(&priv->mdev->state_lock));
2314
2315         if (xdp_prog && carry_xdp_prog) {
2316                 bpf_prog_add(xdp_prog, tmp->rx_ring_num);
2317                 for (i = 0; i < tmp->rx_ring_num; i++)
2318                         rcu_assign_pointer(tmp->rx_ring[i]->xdp_prog,
2319                                            xdp_prog);
2320         }
2321
2322         return 0;
2323 }
2324
2325 void mlx4_en_safe_replace_resources(struct mlx4_en_priv *priv,
2326                                     struct mlx4_en_priv *tmp)
2327 {
2328         mlx4_en_free_resources(priv);
2329         mlx4_en_update_priv(priv, tmp);
2330 }
2331
2332 void mlx4_en_destroy_netdev(struct net_device *dev)
2333 {
2334         struct mlx4_en_priv *priv = netdev_priv(dev);
2335         struct mlx4_en_dev *mdev = priv->mdev;
2336
2337         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2338
2339         /* Unregister device - this will close the port if it was up */
2340         if (priv->registered)
2341                 unregister_netdev(dev);
2342
2343         if (priv->allocated)
2344                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2345
2346         cancel_delayed_work(&priv->stats_task);
2347         cancel_delayed_work(&priv->service_task);
2348         /* flush any pending task for this netdev */
2349         flush_workqueue(mdev->workqueue);
2350
2351         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2352                 mlx4_en_remove_timestamp(mdev);
2353
2354         /* Detach the netdev so tasks would not attempt to access it */
2355         mutex_lock(&mdev->state_lock);
2356         mdev->pndev[priv->port] = NULL;
2357         mdev->upper[priv->port] = NULL;
2358
2359 #ifdef CONFIG_RFS_ACCEL
2360         mlx4_en_cleanup_filters(priv);
2361 #endif
2362
2363         mlx4_en_free_resources(priv);
2364         mutex_unlock(&mdev->state_lock);
2365
2366         free_netdev(dev);
2367 }
2368
2369 static bool mlx4_en_check_xdp_mtu(struct net_device *dev, int mtu)
2370 {
2371         struct mlx4_en_priv *priv = netdev_priv(dev);
2372
2373         if (mtu > MLX4_EN_MAX_XDP_MTU) {
2374                 en_err(priv, "mtu:%d > max:%d when XDP prog is attached\n",
2375                        mtu, MLX4_EN_MAX_XDP_MTU);
2376                 return false;
2377         }
2378
2379         return true;
2380 }
2381
2382 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2383 {
2384         struct mlx4_en_priv *priv = netdev_priv(dev);
2385         struct mlx4_en_dev *mdev = priv->mdev;
2386         int err = 0;
2387
2388         en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2389                  dev->mtu, new_mtu);
2390
2391         if (priv->tx_ring_num[TX_XDP] &&
2392             !mlx4_en_check_xdp_mtu(dev, new_mtu))
2393                 return -EOPNOTSUPP;
2394
2395         dev->mtu = new_mtu;
2396
2397         if (netif_running(dev)) {
2398                 mutex_lock(&mdev->state_lock);
2399                 if (!mdev->device_up) {
2400                         /* NIC is probably restarting - let restart task reset
2401                          * the port */
2402                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2403                 } else {
2404                         mlx4_en_stop_port(dev, 1);
2405                         err = mlx4_en_start_port(dev);
2406                         if (err) {
2407                                 en_err(priv, "Failed restarting port:%d\n",
2408                                          priv->port);
2409                                 if (!test_and_set_bit(MLX4_EN_STATE_FLAG_RESTARTING,
2410                                                       &priv->state))
2411                                         queue_work(mdev->workqueue, &priv->restart_task);
2412                         }
2413                 }
2414                 mutex_unlock(&mdev->state_lock);
2415         }
2416         return 0;
2417 }
2418
2419 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2420 {
2421         struct mlx4_en_priv *priv = netdev_priv(dev);
2422         struct mlx4_en_dev *mdev = priv->mdev;
2423         struct hwtstamp_config config;
2424
2425         if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2426                 return -EFAULT;
2427
2428         /* device doesn't support time stamping */
2429         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2430                 return -EINVAL;
2431
2432         /* TX HW timestamp */
2433         switch (config.tx_type) {
2434         case HWTSTAMP_TX_OFF:
2435         case HWTSTAMP_TX_ON:
2436                 break;
2437         default:
2438                 return -ERANGE;
2439         }
2440
2441         /* RX HW timestamp */
2442         switch (config.rx_filter) {
2443         case HWTSTAMP_FILTER_NONE:
2444                 break;
2445         case HWTSTAMP_FILTER_ALL:
2446         case HWTSTAMP_FILTER_SOME:
2447         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2448         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2449         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2450         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2451         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2452         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2453         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2454         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2455         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2456         case HWTSTAMP_FILTER_PTP_V2_EVENT:
2457         case HWTSTAMP_FILTER_PTP_V2_SYNC:
2458         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2459         case HWTSTAMP_FILTER_NTP_ALL:
2460                 config.rx_filter = HWTSTAMP_FILTER_ALL;
2461                 break;
2462         default:
2463                 return -ERANGE;
2464         }
2465
2466         if (mlx4_en_reset_config(dev, config, dev->features)) {
2467                 config.tx_type = HWTSTAMP_TX_OFF;
2468                 config.rx_filter = HWTSTAMP_FILTER_NONE;
2469         }
2470
2471         return copy_to_user(ifr->ifr_data, &config,
2472                             sizeof(config)) ? -EFAULT : 0;
2473 }
2474
2475 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2476 {
2477         struct mlx4_en_priv *priv = netdev_priv(dev);
2478
2479         return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2480                             sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2481 }
2482
2483 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2484 {
2485         switch (cmd) {
2486         case SIOCSHWTSTAMP:
2487                 return mlx4_en_hwtstamp_set(dev, ifr);
2488         case SIOCGHWTSTAMP:
2489                 return mlx4_en_hwtstamp_get(dev, ifr);
2490         default:
2491                 return -EOPNOTSUPP;
2492         }
2493 }
2494
2495 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev,
2496                                               netdev_features_t features)
2497 {
2498         struct mlx4_en_priv *en_priv = netdev_priv(netdev);
2499         struct mlx4_en_dev *mdev = en_priv->mdev;
2500
2501         /* Since there is no support for separate RX C-TAG/S-TAG vlan accel
2502          * enable/disable make sure S-TAG flag is always in same state as
2503          * C-TAG.
2504          */
2505         if (features & NETIF_F_HW_VLAN_CTAG_RX &&
2506             !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2507                 features |= NETIF_F_HW_VLAN_STAG_RX;
2508         else
2509                 features &= ~NETIF_F_HW_VLAN_STAG_RX;
2510
2511         return features;
2512 }
2513
2514 static int mlx4_en_set_features(struct net_device *netdev,
2515                 netdev_features_t features)
2516 {
2517         struct mlx4_en_priv *priv = netdev_priv(netdev);
2518         bool reset = false;
2519         int ret = 0;
2520
2521         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) {
2522                 en_info(priv, "Turn %s RX-FCS\n",
2523                         (features & NETIF_F_RXFCS) ? "ON" : "OFF");
2524                 reset = true;
2525         }
2526
2527         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
2528                 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
2529
2530                 en_info(priv, "Turn %s RX-ALL\n",
2531                         ignore_fcs_value ? "ON" : "OFF");
2532                 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev,
2533                                               priv->port, ignore_fcs_value);
2534                 if (ret)
2535                         return ret;
2536         }
2537
2538         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2539                 en_info(priv, "Turn %s RX vlan strip offload\n",
2540                         (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2541                 reset = true;
2542         }
2543
2544         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
2545                 en_info(priv, "Turn %s TX vlan strip offload\n",
2546                         (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF");
2547
2548         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX))
2549                 en_info(priv, "Turn %s TX S-VLAN strip offload\n",
2550                         (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF");
2551
2552         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) {
2553                 en_info(priv, "Turn %s loopback\n",
2554                         (features & NETIF_F_LOOPBACK) ? "ON" : "OFF");
2555                 mlx4_en_update_loopback_state(netdev, features);
2556         }
2557
2558         if (reset) {
2559                 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config,
2560                                            features);
2561                 if (ret)
2562                         return ret;
2563         }
2564
2565         return 0;
2566 }
2567
2568 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2569 {
2570         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2571         struct mlx4_en_dev *mdev = en_priv->mdev;
2572
2573         return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac);
2574 }
2575
2576 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos,
2577                                __be16 vlan_proto)
2578 {
2579         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2580         struct mlx4_en_dev *mdev = en_priv->mdev;
2581
2582         return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos,
2583                                 vlan_proto);
2584 }
2585
2586 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
2587                                int max_tx_rate)
2588 {
2589         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2590         struct mlx4_en_dev *mdev = en_priv->mdev;
2591
2592         return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate,
2593                                 max_tx_rate);
2594 }
2595
2596 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2597 {
2598         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2599         struct mlx4_en_dev *mdev = en_priv->mdev;
2600
2601         return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2602 }
2603
2604 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2605 {
2606         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2607         struct mlx4_en_dev *mdev = en_priv->mdev;
2608
2609         return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2610 }
2611
2612 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2613 {
2614         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2615         struct mlx4_en_dev *mdev = en_priv->mdev;
2616
2617         return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2618 }
2619
2620 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf,
2621                                 struct ifla_vf_stats *vf_stats)
2622 {
2623         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2624         struct mlx4_en_dev *mdev = en_priv->mdev;
2625
2626         return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats);
2627 }
2628
2629 #define PORT_ID_BYTE_LEN 8
2630 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2631                                     struct netdev_phys_item_id *ppid)
2632 {
2633         struct mlx4_en_priv *priv = netdev_priv(dev);
2634         struct mlx4_dev *mdev = priv->mdev->dev;
2635         int i;
2636         u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2637
2638         if (!phys_port_id)
2639                 return -EOPNOTSUPP;
2640
2641         ppid->id_len = sizeof(phys_port_id);
2642         for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2643                 ppid->id[i] =  phys_port_id & 0xff;
2644                 phys_port_id >>= 8;
2645         }
2646         return 0;
2647 }
2648
2649 static int mlx4_udp_tunnel_sync(struct net_device *dev, unsigned int table)
2650 {
2651         struct mlx4_en_priv *priv = netdev_priv(dev);
2652         struct udp_tunnel_info ti;
2653         int ret;
2654
2655         udp_tunnel_nic_get_port(dev, table, 0, &ti);
2656         priv->vxlan_port = ti.port;
2657
2658         ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2659         if (ret)
2660                 return ret;
2661
2662         return mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2663                                    VXLAN_STEER_BY_OUTER_MAC,
2664                                    !!priv->vxlan_port);
2665 }
2666
2667 static const struct udp_tunnel_nic_info mlx4_udp_tunnels = {
2668         .sync_table     = mlx4_udp_tunnel_sync,
2669         .flags          = UDP_TUNNEL_NIC_INFO_MAY_SLEEP |
2670                           UDP_TUNNEL_NIC_INFO_IPV4_ONLY,
2671         .tables         = {
2672                 { .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
2673         },
2674 };
2675
2676 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2677                                                 struct net_device *dev,
2678                                                 netdev_features_t features)
2679 {
2680         features = vlan_features_check(skb, features);
2681         features = vxlan_features_check(skb, features);
2682
2683         /* The ConnectX-3 doesn't support outer IPv6 checksums but it does
2684          * support inner IPv6 checksums and segmentation so  we need to
2685          * strip that feature if this is an IPv6 encapsulated frame.
2686          */
2687         if (skb->encapsulation &&
2688             (skb->ip_summed == CHECKSUM_PARTIAL)) {
2689                 struct mlx4_en_priv *priv = netdev_priv(dev);
2690
2691                 if (!priv->vxlan_port ||
2692                     (ip_hdr(skb)->version != 4) ||
2693                     (udp_hdr(skb)->dest != priv->vxlan_port))
2694                         features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
2695         }
2696
2697         return features;
2698 }
2699
2700 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate)
2701 {
2702         struct mlx4_en_priv *priv = netdev_priv(dev);
2703         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][queue_index];
2704         struct mlx4_update_qp_params params;
2705         int err;
2706
2707         if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT))
2708                 return -EOPNOTSUPP;
2709
2710         /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */
2711         if (maxrate >> 12) {
2712                 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS;
2713                 params.rate_val  = maxrate / 1000;
2714         } else if (maxrate) {
2715                 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS;
2716                 params.rate_val  = maxrate;
2717         } else { /* zero serves to revoke the QP rate-limitation */
2718                 params.rate_unit = 0;
2719                 params.rate_val  = 0;
2720         }
2721
2722         err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT,
2723                              &params);
2724         return err;
2725 }
2726
2727 static int mlx4_xdp_set(struct net_device *dev, struct bpf_prog *prog)
2728 {
2729         struct mlx4_en_priv *priv = netdev_priv(dev);
2730         struct mlx4_en_dev *mdev = priv->mdev;
2731         struct mlx4_en_port_profile new_prof;
2732         struct bpf_prog *old_prog;
2733         struct mlx4_en_priv *tmp;
2734         int tx_changed = 0;
2735         int xdp_ring_num;
2736         int port_up = 0;
2737         int err;
2738         int i;
2739
2740         xdp_ring_num = prog ? priv->rx_ring_num : 0;
2741
2742         /* No need to reconfigure buffers when simply swapping the
2743          * program for a new one.
2744          */
2745         if (priv->tx_ring_num[TX_XDP] == xdp_ring_num) {
2746                 if (prog)
2747                         bpf_prog_add(prog, priv->rx_ring_num - 1);
2748
2749                 mutex_lock(&mdev->state_lock);
2750                 for (i = 0; i < priv->rx_ring_num; i++) {
2751                         old_prog = rcu_dereference_protected(
2752                                         priv->rx_ring[i]->xdp_prog,
2753                                         lockdep_is_held(&mdev->state_lock));
2754                         rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2755                         if (old_prog)
2756                                 bpf_prog_put(old_prog);
2757                 }
2758                 mutex_unlock(&mdev->state_lock);
2759                 return 0;
2760         }
2761
2762         if (!mlx4_en_check_xdp_mtu(dev, dev->mtu))
2763                 return -EOPNOTSUPP;
2764
2765         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
2766         if (!tmp)
2767                 return -ENOMEM;
2768
2769         if (prog)
2770                 bpf_prog_add(prog, priv->rx_ring_num - 1);
2771
2772         mutex_lock(&mdev->state_lock);
2773         memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
2774         new_prof.tx_ring_num[TX_XDP] = xdp_ring_num;
2775
2776         if (priv->tx_ring_num[TX] + xdp_ring_num > MAX_TX_RINGS) {
2777                 tx_changed = 1;
2778                 new_prof.tx_ring_num[TX] =
2779                         MAX_TX_RINGS - ALIGN(xdp_ring_num, priv->prof->num_up);
2780                 en_warn(priv, "Reducing the number of TX rings, to not exceed the max total rings number.\n");
2781         }
2782
2783         err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, false);
2784         if (err) {
2785                 if (prog)
2786                         bpf_prog_sub(prog, priv->rx_ring_num - 1);
2787                 goto unlock_out;
2788         }
2789
2790         if (priv->port_up) {
2791                 port_up = 1;
2792                 mlx4_en_stop_port(dev, 1);
2793         }
2794
2795         mlx4_en_safe_replace_resources(priv, tmp);
2796         if (tx_changed)
2797                 netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
2798
2799         for (i = 0; i < priv->rx_ring_num; i++) {
2800                 old_prog = rcu_dereference_protected(
2801                                         priv->rx_ring[i]->xdp_prog,
2802                                         lockdep_is_held(&mdev->state_lock));
2803                 rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2804                 if (old_prog)
2805                         bpf_prog_put(old_prog);
2806         }
2807
2808         if (port_up) {
2809                 err = mlx4_en_start_port(dev);
2810                 if (err) {
2811                         en_err(priv, "Failed starting port %d for XDP change\n",
2812                                priv->port);
2813                         if (!test_and_set_bit(MLX4_EN_STATE_FLAG_RESTARTING, &priv->state))
2814                                 queue_work(mdev->workqueue, &priv->restart_task);
2815                 }
2816         }
2817
2818 unlock_out:
2819         mutex_unlock(&mdev->state_lock);
2820         kfree(tmp);
2821         return err;
2822 }
2823
2824 static int mlx4_xdp(struct net_device *dev, struct netdev_bpf *xdp)
2825 {
2826         switch (xdp->command) {
2827         case XDP_SETUP_PROG:
2828                 return mlx4_xdp_set(dev, xdp->prog);
2829         default:
2830                 return -EINVAL;
2831         }
2832 }
2833
2834 static const struct net_device_ops mlx4_netdev_ops = {
2835         .ndo_open               = mlx4_en_open,
2836         .ndo_stop               = mlx4_en_close,
2837         .ndo_start_xmit         = mlx4_en_xmit,
2838         .ndo_select_queue       = mlx4_en_select_queue,
2839         .ndo_get_stats64        = mlx4_en_get_stats64,
2840         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2841         .ndo_set_mac_address    = mlx4_en_set_mac,
2842         .ndo_validate_addr      = eth_validate_addr,
2843         .ndo_change_mtu         = mlx4_en_change_mtu,
2844         .ndo_eth_ioctl          = mlx4_en_ioctl,
2845         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2846         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2847         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2848         .ndo_set_features       = mlx4_en_set_features,
2849         .ndo_fix_features       = mlx4_en_fix_features,
2850         .ndo_setup_tc           = __mlx4_en_setup_tc,
2851 #ifdef CONFIG_RFS_ACCEL
2852         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2853 #endif
2854         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2855         .ndo_features_check     = mlx4_en_features_check,
2856         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2857         .ndo_bpf                = mlx4_xdp,
2858 };
2859
2860 static const struct net_device_ops mlx4_netdev_ops_master = {
2861         .ndo_open               = mlx4_en_open,
2862         .ndo_stop               = mlx4_en_close,
2863         .ndo_start_xmit         = mlx4_en_xmit,
2864         .ndo_select_queue       = mlx4_en_select_queue,
2865         .ndo_get_stats64        = mlx4_en_get_stats64,
2866         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2867         .ndo_set_mac_address    = mlx4_en_set_mac,
2868         .ndo_validate_addr      = eth_validate_addr,
2869         .ndo_change_mtu         = mlx4_en_change_mtu,
2870         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2871         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2872         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2873         .ndo_set_vf_mac         = mlx4_en_set_vf_mac,
2874         .ndo_set_vf_vlan        = mlx4_en_set_vf_vlan,
2875         .ndo_set_vf_rate        = mlx4_en_set_vf_rate,
2876         .ndo_set_vf_spoofchk    = mlx4_en_set_vf_spoofchk,
2877         .ndo_set_vf_link_state  = mlx4_en_set_vf_link_state,
2878         .ndo_get_vf_stats       = mlx4_en_get_vf_stats,
2879         .ndo_get_vf_config      = mlx4_en_get_vf_config,
2880         .ndo_set_features       = mlx4_en_set_features,
2881         .ndo_fix_features       = mlx4_en_fix_features,
2882         .ndo_setup_tc           = __mlx4_en_setup_tc,
2883 #ifdef CONFIG_RFS_ACCEL
2884         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2885 #endif
2886         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2887         .ndo_features_check     = mlx4_en_features_check,
2888         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2889         .ndo_bpf                = mlx4_xdp,
2890 };
2891
2892 static const struct xdp_metadata_ops mlx4_xdp_metadata_ops = {
2893         .xmo_rx_timestamp               = mlx4_en_xdp_rx_timestamp,
2894         .xmo_rx_hash                    = mlx4_en_xdp_rx_hash,
2895 };
2896
2897 int mlx4_en_netdev_event(struct notifier_block *this,
2898                          unsigned long event, void *ptr)
2899 {
2900         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
2901         u8 port = 0;
2902         struct mlx4_en_dev *mdev;
2903         struct mlx4_dev *dev;
2904         int i, num_eth_ports = 0;
2905         bool do_bond = true;
2906         u8 v2p_port1 = 0;
2907         u8 v2p_port2 = 0;
2908
2909         if (!net_eq(dev_net(ndev), &init_net))
2910                 return NOTIFY_DONE;
2911
2912         mdev = container_of(this, struct mlx4_en_dev, netdev_nb);
2913         dev = mdev->dev;
2914
2915         /* Go into this mode only when two network devices set on two ports
2916          * of the same mlx4 device are slaves of the same bonding master
2917          */
2918         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
2919                 ++num_eth_ports;
2920                 if (!port && (mdev->pndev[i] == ndev))
2921                         port = i;
2922                 mdev->upper[i] = mdev->pndev[i] ?
2923                         netdev_master_upper_dev_get(mdev->pndev[i]) : NULL;
2924                 /* condition not met: network device is a slave */
2925                 if (!mdev->upper[i])
2926                         do_bond = false;
2927                 if (num_eth_ports < 2)
2928                         continue;
2929                 /* condition not met: same master */
2930                 if (mdev->upper[i] != mdev->upper[i-1])
2931                         do_bond = false;
2932         }
2933         /* condition not met: 2 salves */
2934         do_bond = (num_eth_ports ==  2) ? do_bond : false;
2935
2936         /* handle only events that come with enough info */
2937         if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
2938                 return NOTIFY_DONE;
2939
2940         if (do_bond) {
2941                 struct netdev_notifier_bonding_info *notifier_info = ptr;
2942                 struct netdev_bonding_info *bonding_info =
2943                         &notifier_info->bonding_info;
2944
2945                 /* required mode 1, 2 or 4 */
2946                 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
2947                     (bonding_info->master.bond_mode != BOND_MODE_XOR) &&
2948                     (bonding_info->master.bond_mode != BOND_MODE_8023AD))
2949                         do_bond = false;
2950
2951                 /* require exactly 2 slaves */
2952                 if (bonding_info->master.num_slaves != 2)
2953                         do_bond = false;
2954
2955                 /* calc v2p */
2956                 if (do_bond) {
2957                         if (bonding_info->master.bond_mode ==
2958                             BOND_MODE_ACTIVEBACKUP) {
2959                                 /* in active-backup mode virtual ports are
2960                                  * mapped to the physical port of the active
2961                                  * slave */
2962                                 if (bonding_info->slave.state ==
2963                                     BOND_STATE_BACKUP) {
2964                                         if (port == 1) {
2965                                                 v2p_port1 = 2;
2966                                                 v2p_port2 = 2;
2967                                         } else {
2968                                                 v2p_port1 = 1;
2969                                                 v2p_port2 = 1;
2970                                         }
2971                                 } else { /* BOND_STATE_ACTIVE */
2972                                         if (port == 1) {
2973                                                 v2p_port1 = 1;
2974                                                 v2p_port2 = 1;
2975                                         } else {
2976                                                 v2p_port1 = 2;
2977                                                 v2p_port2 = 2;
2978                                         }
2979                                 }
2980                         } else { /* Active-Active */
2981                                 /* in active-active mode a virtual port is
2982                                  * mapped to the native physical port if and only
2983                                  * if the physical port is up */
2984                                 __s8 link = bonding_info->slave.link;
2985
2986                                 if (port == 1)
2987                                         v2p_port2 = 2;
2988                                 else
2989                                         v2p_port1 = 1;
2990                                 if ((link == BOND_LINK_UP) ||
2991                                     (link == BOND_LINK_FAIL)) {
2992                                         if (port == 1)
2993                                                 v2p_port1 = 1;
2994                                         else
2995                                                 v2p_port2 = 2;
2996                                 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
2997                                         if (port == 1)
2998                                                 v2p_port1 = 2;
2999                                         else
3000                                                 v2p_port2 = 1;
3001                                 }
3002                         }
3003                 }
3004         }
3005
3006         mlx4_queue_bond_work(dev, do_bond, v2p_port1, v2p_port2);
3007
3008         return NOTIFY_DONE;
3009 }
3010
3011 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
3012                                      struct mlx4_en_stats_bitmap *stats_bitmap,
3013                                      u8 rx_ppp, u8 rx_pause,
3014                                      u8 tx_ppp, u8 tx_pause)
3015 {
3016         int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS;
3017
3018         if (!mlx4_is_slave(dev) &&
3019             (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
3020                 mutex_lock(&stats_bitmap->mutex);
3021                 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS);
3022
3023                 if (rx_ppp)
3024                         bitmap_set(stats_bitmap->bitmap, last_i,
3025                                    NUM_FLOW_PRIORITY_STATS_RX);
3026                 last_i += NUM_FLOW_PRIORITY_STATS_RX;
3027
3028                 if (rx_pause && !(rx_ppp))
3029                         bitmap_set(stats_bitmap->bitmap, last_i,
3030                                    NUM_FLOW_STATS_RX);
3031                 last_i += NUM_FLOW_STATS_RX;
3032
3033                 if (tx_ppp)
3034                         bitmap_set(stats_bitmap->bitmap, last_i,
3035                                    NUM_FLOW_PRIORITY_STATS_TX);
3036                 last_i += NUM_FLOW_PRIORITY_STATS_TX;
3037
3038                 if (tx_pause && !(tx_ppp))
3039                         bitmap_set(stats_bitmap->bitmap, last_i,
3040                                    NUM_FLOW_STATS_TX);
3041                 last_i += NUM_FLOW_STATS_TX;
3042
3043                 mutex_unlock(&stats_bitmap->mutex);
3044         }
3045 }
3046
3047 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
3048                               struct mlx4_en_stats_bitmap *stats_bitmap,
3049                               u8 rx_ppp, u8 rx_pause,
3050                               u8 tx_ppp, u8 tx_pause)
3051 {
3052         int last_i = 0;
3053
3054         mutex_init(&stats_bitmap->mutex);
3055         bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS);
3056
3057         if (mlx4_is_slave(dev)) {
3058                 bitmap_set(stats_bitmap->bitmap, last_i +
3059                                          MLX4_FIND_NETDEV_STAT(rx_packets), 1);
3060                 bitmap_set(stats_bitmap->bitmap, last_i +
3061                                          MLX4_FIND_NETDEV_STAT(tx_packets), 1);
3062                 bitmap_set(stats_bitmap->bitmap, last_i +
3063                                          MLX4_FIND_NETDEV_STAT(rx_bytes), 1);
3064                 bitmap_set(stats_bitmap->bitmap, last_i +
3065                                          MLX4_FIND_NETDEV_STAT(tx_bytes), 1);
3066                 bitmap_set(stats_bitmap->bitmap, last_i +
3067                                          MLX4_FIND_NETDEV_STAT(rx_dropped), 1);
3068                 bitmap_set(stats_bitmap->bitmap, last_i +
3069                                          MLX4_FIND_NETDEV_STAT(tx_dropped), 1);
3070         } else {
3071                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS);
3072         }
3073         last_i += NUM_MAIN_STATS;
3074
3075         bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS);
3076         last_i += NUM_PORT_STATS;
3077
3078         if (mlx4_is_master(dev))
3079                 bitmap_set(stats_bitmap->bitmap, last_i,
3080                            NUM_PF_STATS);
3081         last_i += NUM_PF_STATS;
3082
3083         mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
3084                                         rx_ppp, rx_pause,
3085                                         tx_ppp, tx_pause);
3086         last_i += NUM_FLOW_STATS;
3087
3088         if (!mlx4_is_slave(dev))
3089                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS);
3090         last_i += NUM_PKT_STATS;
3091
3092         bitmap_set(stats_bitmap->bitmap, last_i, NUM_XDP_STATS);
3093         last_i += NUM_XDP_STATS;
3094
3095         if (!mlx4_is_slave(dev))
3096                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PHY_STATS);
3097         last_i += NUM_PHY_STATS;
3098 }
3099
3100 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
3101                         struct mlx4_en_port_profile *prof)
3102 {
3103         struct net_device *dev;
3104         struct mlx4_en_priv *priv;
3105         int i, t;
3106         int err;
3107
3108         dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
3109                                  MAX_TX_RINGS, MAX_RX_RINGS);
3110         if (dev == NULL)
3111                 return -ENOMEM;
3112
3113         netif_set_real_num_tx_queues(dev, prof->tx_ring_num[TX]);
3114         netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
3115
3116         SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev);
3117         dev->dev_port = port - 1;
3118
3119         /*
3120          * Initialize driver private data
3121          */
3122
3123         priv = netdev_priv(dev);
3124         memset(priv, 0, sizeof(struct mlx4_en_priv));
3125         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
3126         spin_lock_init(&priv->stats_lock);
3127         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
3128         INIT_WORK(&priv->restart_task, mlx4_en_restart);
3129         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate_work);
3130         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
3131         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
3132 #ifdef CONFIG_RFS_ACCEL
3133         INIT_LIST_HEAD(&priv->filters);
3134         spin_lock_init(&priv->filters_lock);
3135 #endif
3136
3137         priv->dev = dev;
3138         priv->mdev = mdev;
3139         priv->ddev = &mdev->pdev->dev;
3140         priv->prof = prof;
3141         priv->port = port;
3142         priv->port_up = false;
3143         priv->flags = prof->flags;
3144         priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
3145         priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
3146                         MLX4_WQE_CTRL_SOLICITED);
3147         priv->num_tx_rings_p_up = mdev->profile.max_num_tx_rings_p_up;
3148         priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
3149         netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
3150
3151         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
3152                 priv->tx_ring_num[t] = prof->tx_ring_num[t];
3153                 if (!priv->tx_ring_num[t])
3154                         continue;
3155
3156                 priv->tx_ring[t] = kcalloc(MAX_TX_RINGS,
3157                                            sizeof(struct mlx4_en_tx_ring *),
3158                                            GFP_KERNEL);
3159                 if (!priv->tx_ring[t]) {
3160                         err = -ENOMEM;
3161                         goto out;
3162                 }
3163                 priv->tx_cq[t] = kcalloc(MAX_TX_RINGS,
3164                                          sizeof(struct mlx4_en_cq *),
3165                                          GFP_KERNEL);
3166                 if (!priv->tx_cq[t]) {
3167                         err = -ENOMEM;
3168                         goto out;
3169                 }
3170         }
3171         priv->rx_ring_num = prof->rx_ring_num;
3172         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
3173         priv->cqe_size = mdev->dev->caps.cqe_size;
3174         priv->mac_index = -1;
3175         priv->msg_enable = MLX4_EN_MSG_LEVEL;
3176 #ifdef CONFIG_MLX4_EN_DCB
3177         if (!mlx4_is_slave(priv->mdev->dev)) {
3178                 u8 prio;
3179
3180                 for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; ++prio) {
3181                         priv->ets.prio_tc[prio] = prio;
3182                         priv->ets.tc_tsa[prio]  = IEEE_8021QAZ_TSA_VENDOR;
3183                 }
3184
3185                 priv->dcbx_cap = DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_HOST |
3186                         DCB_CAP_DCBX_VER_IEEE;
3187                 priv->flags |= MLX4_EN_DCB_ENABLED;
3188                 priv->cee_config.pfc_state = false;
3189
3190                 for (i = 0; i < MLX4_EN_NUM_UP_HIGH; i++)
3191                         priv->cee_config.dcb_pfc[i] = pfc_disabled;
3192
3193                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
3194                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
3195                 } else {
3196                         en_info(priv, "enabling only PFC DCB ops\n");
3197                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
3198                 }
3199         }
3200 #endif
3201
3202         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
3203                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
3204
3205         /* Query for default mac and max mtu */
3206         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
3207
3208         if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
3209             MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
3210                 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
3211
3212         /* Set default MAC */
3213         dev->addr_len = ETH_ALEN;
3214         mlx4_en_u64_to_mac(dev, mdev->dev->caps.def_mac[priv->port]);
3215         if (!is_valid_ether_addr(dev->dev_addr)) {
3216                 en_err(priv, "Port: %d, invalid mac burned: %pM, quitting\n",
3217                        priv->port, dev->dev_addr);
3218                 err = -EINVAL;
3219                 goto out;
3220         } else if (mlx4_is_slave(priv->mdev->dev) &&
3221                    (priv->mdev->dev->port_random_macs & 1 << priv->port)) {
3222                 /* Random MAC was assigned in mlx4_slave_cap
3223                  * in mlx4_core module
3224                  */
3225                 dev->addr_assign_type |= NET_ADDR_RANDOM;
3226                 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
3227         }
3228
3229         memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
3230
3231         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
3232                                           DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
3233         err = mlx4_en_alloc_resources(priv);
3234         if (err)
3235                 goto out;
3236
3237         /* Initialize time stamping config */
3238         priv->hwtstamp_config.flags = 0;
3239         priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
3240         priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
3241
3242         /* Allocate page for receive rings */
3243         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
3244                                 MLX4_EN_PAGE_SIZE);
3245         if (err) {
3246                 en_err(priv, "Failed to allocate page for rx qps\n");
3247                 goto out;
3248         }
3249         priv->allocated = 1;
3250
3251         /*
3252          * Initialize netdev entry points
3253          */
3254         if (mlx4_is_master(priv->mdev->dev))
3255                 dev->netdev_ops = &mlx4_netdev_ops_master;
3256         else
3257                 dev->netdev_ops = &mlx4_netdev_ops;
3258         dev->xdp_metadata_ops = &mlx4_xdp_metadata_ops;
3259         dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
3260         netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
3261         netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
3262
3263         dev->ethtool_ops = &mlx4_en_ethtool_ops;
3264
3265         /*
3266          * Set driver features
3267          */
3268         dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
3269         if (mdev->LSO_support)
3270                 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
3271
3272         if (mdev->dev->caps.tunnel_offload_mode ==
3273             MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3274                 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
3275                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3276                                     NETIF_F_GSO_PARTIAL;
3277                 dev->features    |= NETIF_F_GSO_UDP_TUNNEL |
3278                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3279                                     NETIF_F_GSO_PARTIAL;
3280                 dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
3281                 dev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
3282                                        NETIF_F_RXCSUM |
3283                                        NETIF_F_TSO | NETIF_F_TSO6 |
3284                                        NETIF_F_GSO_UDP_TUNNEL |
3285                                        NETIF_F_GSO_UDP_TUNNEL_CSUM |
3286                                        NETIF_F_GSO_PARTIAL;
3287
3288                 dev->udp_tunnel_nic_info = &mlx4_udp_tunnels;
3289         }
3290
3291         dev->vlan_features = dev->hw_features;
3292
3293         dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
3294         dev->features = dev->hw_features | NETIF_F_HIGHDMA |
3295                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
3296                         NETIF_F_HW_VLAN_CTAG_FILTER;
3297         dev->hw_features |= NETIF_F_LOOPBACK |
3298                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
3299
3300         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) {
3301                 dev->features |= NETIF_F_HW_VLAN_STAG_RX |
3302                         NETIF_F_HW_VLAN_STAG_FILTER;
3303                 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX;
3304         }
3305
3306         if (mlx4_is_slave(mdev->dev)) {
3307                 bool vlan_offload_disabled;
3308                 int phv;
3309
3310                 err = get_phv_bit(mdev->dev, port, &phv);
3311                 if (!err && phv) {
3312                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3313                         priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
3314                 }
3315                 err = mlx4_get_is_vlan_offload_disabled(mdev->dev, port,
3316                                                         &vlan_offload_disabled);
3317                 if (!err && vlan_offload_disabled) {
3318                         dev->hw_features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3319                                               NETIF_F_HW_VLAN_CTAG_RX |
3320                                               NETIF_F_HW_VLAN_STAG_TX |
3321                                               NETIF_F_HW_VLAN_STAG_RX);
3322                         dev->features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3323                                            NETIF_F_HW_VLAN_CTAG_RX |
3324                                            NETIF_F_HW_VLAN_STAG_TX |
3325                                            NETIF_F_HW_VLAN_STAG_RX);
3326                 }
3327         } else {
3328                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN &&
3329                     !(mdev->dev->caps.flags2 &
3330                       MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
3331                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3332         }
3333
3334         if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
3335                 dev->hw_features |= NETIF_F_RXFCS;
3336
3337         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
3338                 dev->hw_features |= NETIF_F_RXALL;
3339
3340         if (mdev->dev->caps.steering_mode ==
3341             MLX4_STEERING_MODE_DEVICE_MANAGED &&
3342             mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
3343                 dev->hw_features |= NETIF_F_NTUPLE;
3344
3345         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
3346                 dev->priv_flags |= IFF_UNICAST_FLT;
3347
3348         /* Setting a default hash function value */
3349         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
3350                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3351         } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
3352                 priv->rss_hash_fn = ETH_RSS_HASH_XOR;
3353         } else {
3354                 en_warn(priv,
3355                         "No RSS hash capabilities exposed, using Toeplitz\n");
3356                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3357         }
3358
3359         dev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT;
3360
3361         /* MTU range: 68 - hw-specific max */
3362         dev->min_mtu = ETH_MIN_MTU;
3363         dev->max_mtu = priv->max_mtu;
3364
3365         /* supports LSOv2 packets. */
3366         netif_set_tso_max_size(dev, GSO_MAX_SIZE);
3367
3368         mdev->pndev[port] = dev;
3369         mdev->upper[port] = NULL;
3370
3371         netif_carrier_off(dev);
3372         mlx4_en_set_default_moderation(priv);
3373
3374         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num[TX]);
3375         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
3376
3377         mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
3378
3379         /* Configure port */
3380         mlx4_en_calc_rx_buf(dev);
3381         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
3382                                     priv->rx_skb_size + ETH_FCS_LEN,
3383                                     prof->tx_pause, prof->tx_ppp,
3384                                     prof->rx_pause, prof->rx_ppp);
3385         if (err) {
3386                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
3387                        priv->port, err);
3388                 goto out;
3389         }
3390
3391         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3392                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
3393                 if (err) {
3394                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
3395                                err);
3396                         goto out;
3397                 }
3398         }
3399
3400         /* Init port */
3401         en_warn(priv, "Initializing port\n");
3402         err = mlx4_INIT_PORT(mdev->dev, priv->port);
3403         if (err) {
3404                 en_err(priv, "Failed Initializing port\n");
3405                 goto out;
3406         }
3407         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
3408
3409         /* Initialize time stamp mechanism */
3410         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
3411                 mlx4_en_init_timestamp(mdev);
3412
3413         queue_delayed_work(mdev->workqueue, &priv->service_task,
3414                            SERVICE_TASK_DELAY);
3415
3416         mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap,
3417                                  mdev->profile.prof[priv->port].rx_ppp,
3418                                  mdev->profile.prof[priv->port].rx_pause,
3419                                  mdev->profile.prof[priv->port].tx_ppp,
3420                                  mdev->profile.prof[priv->port].tx_pause);
3421
3422         SET_NETDEV_DEVLINK_PORT(dev,
3423                                 mlx4_get_devlink_port(mdev->dev, priv->port));
3424         err = register_netdev(dev);
3425         if (err) {
3426                 en_err(priv, "Netdev registration failed for port %d\n", port);
3427                 goto out;
3428         }
3429
3430         priv->registered = 1;
3431
3432         return 0;
3433
3434 out:
3435         mlx4_en_destroy_netdev(dev);
3436         return err;
3437 }
3438
3439 int mlx4_en_reset_config(struct net_device *dev,
3440                          struct hwtstamp_config ts_config,
3441                          netdev_features_t features)
3442 {
3443         struct mlx4_en_priv *priv = netdev_priv(dev);
3444         struct mlx4_en_dev *mdev = priv->mdev;
3445         struct mlx4_en_port_profile new_prof;
3446         struct mlx4_en_priv *tmp;
3447         int port_up = 0;
3448         int err = 0;
3449
3450         if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
3451             priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
3452             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3453             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
3454                 return 0; /* Nothing to change */
3455
3456         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3457             (features & NETIF_F_HW_VLAN_CTAG_RX) &&
3458             (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
3459                 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
3460                 return -EINVAL;
3461         }
3462
3463         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
3464         if (!tmp)
3465                 return -ENOMEM;
3466
3467         mutex_lock(&mdev->state_lock);
3468
3469         memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
3470         memcpy(&new_prof.hwtstamp_config, &ts_config, sizeof(ts_config));
3471
3472         err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, true);
3473         if (err)
3474                 goto out;
3475
3476         if (priv->port_up) {
3477                 port_up = 1;
3478                 mlx4_en_stop_port(dev, 1);
3479         }
3480
3481         mlx4_en_safe_replace_resources(priv, tmp);
3482
3483         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
3484                 if (features & NETIF_F_HW_VLAN_CTAG_RX)
3485                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3486                 else
3487                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3488         } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
3489                 /* RX time-stamping is OFF, update the RX vlan offload
3490                  * to the latest wanted state
3491                  */
3492                 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
3493                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3494                 else
3495                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3496         }
3497
3498         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
3499                 if (features & NETIF_F_RXFCS)
3500                         dev->features |= NETIF_F_RXFCS;
3501                 else
3502                         dev->features &= ~NETIF_F_RXFCS;
3503         }
3504
3505         /* RX vlan offload and RX time-stamping can't co-exist !
3506          * Regardless of the caller's choice,
3507          * Turn Off RX vlan offload in case of time-stamping is ON
3508          */
3509         if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
3510                 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
3511                         en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
3512                 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3513         }
3514
3515         if (port_up) {
3516                 err = mlx4_en_start_port(dev);
3517                 if (err)
3518                         en_err(priv, "Failed starting port\n");
3519         }
3520
3521         if (!err)
3522                 err = mlx4_en_moderation_update(priv);
3523 out:
3524         mutex_unlock(&mdev->state_lock);
3525         kfree(tmp);
3526         if (!err)
3527                 netdev_features_change(dev);
3528         return err;
3529 }