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/tcp.h>
  37 #include <linux/if_vlan.h>
  38 #include <linux/delay.h>
  39 #include <linux/slab.h>
  40 #include <linux/hash.h>
  41 #include <net/ip.h>
  42 #include <net/busy_poll.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 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
  55 {
  56         struct mlx4_en_priv *priv = netdev_priv(dev);
  57         int i;
  58         unsigned int offset = 0;
  59
  60         if (up && up != MLX4_EN_NUM_UP)
  61                 return -EINVAL;
  62
  63         netdev_set_num_tc(dev, up);
  64
  65         /* Partition Tx queues evenly amongst UP's */
  66         for (i = 0; i < up; i++) {
  67                 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
  68                 offset += priv->num_tx_rings_p_up;
  69         }
  70
  71 #ifdef CONFIG_MLX4_EN_DCB
  72         if (!mlx4_is_slave(priv->mdev->dev)) {
  73                 if (up) {
  74                         if (priv->dcbx_cap)
  75                                 priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
  76                 } else {
  77                         priv->flags &= ~MLX4_EN_FLAG_DCB_ENABLED;
  78                         priv->cee_config.pfc_state = false;
  79                 }
  80         }
  81 #endif /* CONFIG_MLX4_EN_DCB */
  82
  83         return 0;
  84 }
  85
  86 static int __mlx4_en_setup_tc(struct net_device *dev, u32 handle, __be16 proto,
  87                               struct tc_to_netdev *tc)
  88 {
  89         if (tc->type != TC_SETUP_MQPRIO)
  90                 return -EINVAL;
  91
  92         return mlx4_en_setup_tc(dev, tc->tc);
  93 }
  94
  95 #ifdef CONFIG_RFS_ACCEL
  96
  97 struct mlx4_en_filter {
  98         struct list_head next;
  99         struct work_struct work;
 100
 101         u8     ip_proto;
 102         __be32 src_ip;
 103         __be32 dst_ip;
 104         __be16 src_port;
 105         __be16 dst_port;
 106
 107         int rxq_index;
 108         struct mlx4_en_priv *priv;
 109         u32 flow_id;                    /* RFS infrastructure id */
 110         int id;                         /* mlx4_en driver id */
 111         u64 reg_id;                     /* Flow steering API id */
 112         u8 activated;                   /* Used to prevent expiry before filter
 113                                          * is attached
 114                                          */
 115         struct hlist_node filter_chain;
 116 };
 117
 118 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 119
 120 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 121 {
 122         switch (ip_proto) {
 123         case IPPROTO_UDP:
 124                 return MLX4_NET_TRANS_RULE_ID_UDP;
 125         case IPPROTO_TCP:
 126                 return MLX4_NET_TRANS_RULE_ID_TCP;
 127         default:
 128                 return MLX4_NET_TRANS_RULE_NUM;
 129         }
 130 };
 131
 132 static void mlx4_en_filter_work(struct work_struct *work)
 133 {
 134         struct mlx4_en_filter *filter = container_of(work,
 135                                                      struct mlx4_en_filter,
 136                                                      work);
 137         struct mlx4_en_priv *priv = filter->priv;
 138         struct mlx4_spec_list spec_tcp_udp = {
 139                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 140                 {
 141                         .tcp_udp = {
 142                                 .dst_port = filter->dst_port,
 143                                 .dst_port_msk = (__force __be16)-1,
 144                                 .src_port = filter->src_port,
 145                                 .src_port_msk = (__force __be16)-1,
 146                         },
 147                 },
 148         };
 149         struct mlx4_spec_list spec_ip = {
 150                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 151                 {
 152                         .ipv4 = {
 153                                 .dst_ip = filter->dst_ip,
 154                                 .dst_ip_msk = (__force __be32)-1,
 155                                 .src_ip = filter->src_ip,
 156                                 .src_ip_msk = (__force __be32)-1,
 157                         },
 158                 },
 159         };
 160         struct mlx4_spec_list spec_eth = {
 161                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 162         };
 163         struct mlx4_net_trans_rule rule = {
 164                 .list = LIST_HEAD_INIT(rule.list),
 165                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 166                 .exclusive = 1,
 167                 .allow_loopback = 1,
 168                 .promisc_mode = MLX4_FS_REGULAR,
 169                 .port = priv->port,
 170                 .priority = MLX4_DOMAIN_RFS,
 171         };
 172         int rc;
 173         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 174
 175         if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
 176                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 177                         filter->ip_proto);
 178                 goto ignore;
 179         }
 180         list_add_tail(&spec_eth.list, &rule.list);
 181         list_add_tail(&spec_ip.list, &rule.list);
 182         list_add_tail(&spec_tcp_udp.list, &rule.list);
 183
 184         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 185         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 186         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 187
 188         filter->activated = 0;
 189
 190         if (filter->reg_id) {
 191                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 192                 if (rc && rc != -ENOENT)
 193                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 194         }
 195
 196         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 197         if (rc)
 198                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 199
 200 ignore:
 201         mlx4_en_filter_rfs_expire(priv);
 202
 203         filter->activated = 1;
 204 }
 205
 206 static inline struct hlist_head *
 207 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 208                    __be16 src_port, __be16 dst_port)
 209 {
 210         unsigned long l;
 211         int bucket_idx;
 212
 213         l = (__force unsigned long)src_port |
 214             ((__force unsigned long)dst_port << 2);
 215         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 216
 217         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 218
 219         return &priv->filter_hash[bucket_idx];
 220 }
 221
 222 static struct mlx4_en_filter *
 223 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 224                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 225                      __be16 dst_port, u32 flow_id)
 226 {
 227         struct mlx4_en_filter *filter = NULL;
 228
 229         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 230         if (!filter)
 231                 return NULL;
 232
 233         filter->priv = priv;
 234         filter->rxq_index = rxq_index;
 235         INIT_WORK(&filter->work, mlx4_en_filter_work);
 236
 237         filter->src_ip = src_ip;
 238         filter->dst_ip = dst_ip;
 239         filter->ip_proto = ip_proto;
 240         filter->src_port = src_port;
 241         filter->dst_port = dst_port;
 242
 243         filter->flow_id = flow_id;
 244
 245         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 246
 247         list_add_tail(&filter->next, &priv->filters);
 248         hlist_add_head(&filter->filter_chain,
 249                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 250                                           dst_port));
 251
 252         return filter;
 253 }
 254
 255 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 256 {
 257         struct mlx4_en_priv *priv = filter->priv;
 258         int rc;
 259
 260         list_del(&filter->next);
 261
 262         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 263         if (rc && rc != -ENOENT)
 264                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 265
 266         kfree(filter);
 267 }
 268
 269 static inline struct mlx4_en_filter *
 270 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 271                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 272 {
 273         struct mlx4_en_filter *filter;
 274         struct mlx4_en_filter *ret = NULL;
 275
 276         hlist_for_each_entry(filter,
 277                              filter_hash_bucket(priv, src_ip, dst_ip,
 278                                                 src_port, dst_port),
 279                              filter_chain) {
 280                 if (filter->src_ip == src_ip &&
 281                     filter->dst_ip == dst_ip &&
 282                     filter->ip_proto == ip_proto &&
 283                     filter->src_port == src_port &&
 284                     filter->dst_port == dst_port) {
 285                         ret = filter;
 286                         break;
 287                 }
 288         }
 289
 290         return ret;
 291 }
 292
 293 static int
 294 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 295                    u16 rxq_index, u32 flow_id)
 296 {
 297         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 298         struct mlx4_en_filter *filter;
 299         const struct iphdr *ip;
 300         const __be16 *ports;
 301         u8 ip_proto;
 302         __be32 src_ip;
 303         __be32 dst_ip;
 304         __be16 src_port;
 305         __be16 dst_port;
 306         int nhoff = skb_network_offset(skb);
 307         int ret = 0;
 308
 309         if (skb->protocol != htons(ETH_P_IP))
 310                 return -EPROTONOSUPPORT;
 311
 312         ip = (const struct iphdr *)(skb->data + nhoff);
 313         if (ip_is_fragment(ip))
 314                 return -EPROTONOSUPPORT;
 315
 316         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 317                 return -EPROTONOSUPPORT;
 318         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 319
 320         ip_proto = ip->protocol;
 321         src_ip = ip->saddr;
 322         dst_ip = ip->daddr;
 323         src_port = ports[0];
 324         dst_port = ports[1];
 325
 326         spin_lock_bh(&priv->filters_lock);
 327         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 328                                      src_port, dst_port);
 329         if (filter) {
 330                 if (filter->rxq_index == rxq_index)
 331                         goto out;
 332
 333                 filter->rxq_index = rxq_index;
 334         } else {
 335                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 336                                               src_ip, dst_ip, ip_proto,
 337                                               src_port, dst_port, flow_id);
 338                 if (!filter) {
 339                         ret = -ENOMEM;
 340                         goto err;
 341                 }
 342         }
 343
 344         queue_work(priv->mdev->workqueue, &filter->work);
 345
 346 out:
 347         ret = filter->id;
 348 err:
 349         spin_unlock_bh(&priv->filters_lock);
 350
 351         return ret;
 352 }
 353
 354 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 355 {
 356         struct mlx4_en_filter *filter, *tmp;
 357         LIST_HEAD(del_list);
 358
 359         spin_lock_bh(&priv->filters_lock);
 360         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 361                 list_move(&filter->next, &del_list);
 362                 hlist_del(&filter->filter_chain);
 363         }
 364         spin_unlock_bh(&priv->filters_lock);
 365
 366         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 367                 cancel_work_sync(&filter->work);
 368                 mlx4_en_filter_free(filter);
 369         }
 370 }
 371
 372 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 373 {
 374         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 375         LIST_HEAD(del_list);
 376         int i = 0;
 377
 378         spin_lock_bh(&priv->filters_lock);
 379         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 380                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 381                         break;
 382
 383                 if (filter->activated &&
 384                     !work_pending(&filter->work) &&
 385                     rps_may_expire_flow(priv->dev,
 386                                         filter->rxq_index, filter->flow_id,
 387                                         filter->id)) {
 388                         list_move(&filter->next, &del_list);
 389                         hlist_del(&filter->filter_chain);
 390                 } else
 391                         last_filter = filter;
 392
 393                 i++;
 394         }
 395
 396         if (last_filter && (&last_filter->next != priv->filters.next))
 397                 list_move(&priv->filters, &last_filter->next);
 398
 399         spin_unlock_bh(&priv->filters_lock);
 400
 401         list_for_each_entry_safe(filter, tmp, &del_list, next)
 402                 mlx4_en_filter_free(filter);
 403 }
 404 #endif
 405
 406 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
 407                                    __be16 proto, u16 vid)
 408 {
 409         struct mlx4_en_priv *priv = netdev_priv(dev);
 410         struct mlx4_en_dev *mdev = priv->mdev;
 411         int err;
 412         int idx;
 413
 414         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 415
 416         set_bit(vid, priv->active_vlans);
 417
 418         /* Add VID to port VLAN filter */
 419         mutex_lock(&mdev->state_lock);
 420         if (mdev->device_up && priv->port_up) {
 421                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 422                 if (err) {
 423                         en_err(priv, "Failed configuring VLAN filter\n");
 424                         goto out;
 425                 }
 426         }
 427         err = mlx4_register_vlan(mdev->dev, priv->port, vid, &idx);
 428         if (err)
 429                 en_dbg(HW, priv, "Failed adding vlan %d\n", vid);
 430
 431 out:
 432         mutex_unlock(&mdev->state_lock);
 433         return err;
 434 }
 435
 436 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
 437                                     __be16 proto, u16 vid)
 438 {
 439         struct mlx4_en_priv *priv = netdev_priv(dev);
 440         struct mlx4_en_dev *mdev = priv->mdev;
 441         int err = 0;
 442
 443         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 444
 445         clear_bit(vid, priv->active_vlans);
 446
 447         /* Remove VID from port VLAN filter */
 448         mutex_lock(&mdev->state_lock);
 449         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 450
 451         if (mdev->device_up && priv->port_up) {
 452                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 453                 if (err)
 454                         en_err(priv, "Failed configuring VLAN filter\n");
 455         }
 456         mutex_unlock(&mdev->state_lock);
 457
 458         return err;
 459 }
 460
 461 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
 462 {
 463         int i;
 464         for (i = ETH_ALEN - 1; i >= 0; --i) {
 465                 dst_mac[i] = src_mac & 0xff;
 466                 src_mac >>= 8;
 467         }
 468         memset(&dst_mac[ETH_ALEN], 0, 2);
 469 }
 470
 471
 472 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
 473                                     int qpn, u64 *reg_id)
 474 {
 475         int err;
 476
 477         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
 478             priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
 479                 return 0; /* do nothing */
 480
 481         err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
 482                                     MLX4_DOMAIN_NIC, reg_id);
 483         if (err) {
 484                 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 485                 return err;
 486         }
 487         en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
 488         return 0;
 489 }
 490
 491
 492 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 493                                 unsigned char *mac, int *qpn, u64 *reg_id)
 494 {
 495         struct mlx4_en_dev *mdev = priv->mdev;
 496         struct mlx4_dev *dev = mdev->dev;
 497         int err;
 498
 499         switch (dev->caps.steering_mode) {
 500         case MLX4_STEERING_MODE_B0: {
 501                 struct mlx4_qp qp;
 502                 u8 gid[16] = {0};
 503
 504                 qp.qpn = *qpn;
 505                 memcpy(&gid[10], mac, ETH_ALEN);
 506                 gid[5] = priv->port;
 507
 508                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 509                 break;
 510         }
 511         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 512                 struct mlx4_spec_list spec_eth = { {NULL} };
 513                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 514
 515                 struct mlx4_net_trans_rule rule = {
 516                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 517                         .exclusive = 0,
 518                         .allow_loopback = 1,
 519                         .promisc_mode = MLX4_FS_REGULAR,
 520                         .priority = MLX4_DOMAIN_NIC,
 521                 };
 522
 523                 rule.port = priv->port;
 524                 rule.qpn = *qpn;
 525                 INIT_LIST_HEAD(&rule.list);
 526
 527                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 528                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 529                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 530                 list_add_tail(&spec_eth.list, &rule.list);
 531
 532                 err = mlx4_flow_attach(dev, &rule, reg_id);
 533                 break;
 534         }
 535         default:
 536                 return -EINVAL;
 537         }
 538         if (err)
 539                 en_warn(priv, "Failed Attaching Unicast\n");
 540
 541         return err;
 542 }
 543
 544 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 545                                      unsigned char *mac, int qpn, u64 reg_id)
 546 {
 547         struct mlx4_en_dev *mdev = priv->mdev;
 548         struct mlx4_dev *dev = mdev->dev;
 549
 550         switch (dev->caps.steering_mode) {
 551         case MLX4_STEERING_MODE_B0: {
 552                 struct mlx4_qp qp;
 553                 u8 gid[16] = {0};
 554
 555                 qp.qpn = qpn;
 556                 memcpy(&gid[10], mac, ETH_ALEN);
 557                 gid[5] = priv->port;
 558
 559                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 560                 break;
 561         }
 562         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 563                 mlx4_flow_detach(dev, reg_id);
 564                 break;
 565         }
 566         default:
 567                 en_err(priv, "Invalid steering mode.\n");
 568         }
 569 }
 570
 571 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 572 {
 573         struct mlx4_en_dev *mdev = priv->mdev;
 574         struct mlx4_dev *dev = mdev->dev;
 575         int index = 0;
 576         int err = 0;
 577         int *qpn = &priv->base_qpn;
 578         u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 579
 580         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 581                priv->dev->dev_addr);
 582         index = mlx4_register_mac(dev, priv->port, mac);
 583         if (index < 0) {
 584                 err = index;
 585                 en_err(priv, "Failed adding MAC: %pM\n",
 586                        priv->dev->dev_addr);
 587                 return err;
 588         }
 589
 590         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 591                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 592                 *qpn = base_qpn + index;
 593                 return 0;
 594         }
 595
 596         err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP);
 597         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 598         if (err) {
 599                 en_err(priv, "Failed to reserve qp for mac registration\n");
 600                 mlx4_unregister_mac(dev, priv->port, mac);
 601                 return err;
 602         }
 603
 604         return 0;
 605 }
 606
 607 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 608 {
 609         struct mlx4_en_dev *mdev = priv->mdev;
 610         struct mlx4_dev *dev = mdev->dev;
 611         int qpn = priv->base_qpn;
 612
 613         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 614                 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 615                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 616                        priv->dev->dev_addr);
 617                 mlx4_unregister_mac(dev, priv->port, mac);
 618         } else {
 619                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 620                        priv->port, qpn);
 621                 mlx4_qp_release_range(dev, qpn, 1);
 622                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 623         }
 624 }
 625
 626 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
 627                                unsigned char *new_mac, unsigned char *prev_mac)
 628 {
 629         struct mlx4_en_dev *mdev = priv->mdev;
 630         struct mlx4_dev *dev = mdev->dev;
 631         int err = 0;
 632         u64 new_mac_u64 = mlx4_mac_to_u64(new_mac);
 633
 634         if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
 635                 struct hlist_head *bucket;
 636                 unsigned int mac_hash;
 637                 struct mlx4_mac_entry *entry;
 638                 struct hlist_node *tmp;
 639                 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac);
 640
 641                 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
 642                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 643                         if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
 644                                 mlx4_en_uc_steer_release(priv, entry->mac,
 645                                                          qpn, entry->reg_id);
 646                                 mlx4_unregister_mac(dev, priv->port,
 647                                                     prev_mac_u64);
 648                                 hlist_del_rcu(&entry->hlist);
 649                                 synchronize_rcu();
 650                                 memcpy(entry->mac, new_mac, ETH_ALEN);
 651                                 entry->reg_id = 0;
 652                                 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
 653                                 hlist_add_head_rcu(&entry->hlist,
 654                                                    &priv->mac_hash[mac_hash]);
 655                                 mlx4_register_mac(dev, priv->port, new_mac_u64);
 656                                 err = mlx4_en_uc_steer_add(priv, new_mac,
 657                                                            &qpn,
 658                                                            &entry->reg_id);
 659                                 if (err)
 660                                         return err;
 661                                 if (priv->tunnel_reg_id) {
 662                                         mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 663                                         priv->tunnel_reg_id = 0;
 664                                 }
 665                                 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
 666                                                                &priv->tunnel_reg_id);
 667                                 return err;
 668                         }
 669                 }
 670                 return -EINVAL;
 671         }
 672
 673         return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
 674 }
 675
 676 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
 677                               unsigned char new_mac[ETH_ALEN + 2])
 678 {
 679         int err = 0;
 680
 681         if (priv->port_up) {
 682                 /* Remove old MAC and insert the new one */
 683                 err = mlx4_en_replace_mac(priv, priv->base_qpn,
 684                                           new_mac, priv->current_mac);
 685                 if (err)
 686                         en_err(priv, "Failed changing HW MAC address\n");
 687         } else
 688                 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 689
 690         if (!err)
 691                 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
 692
 693         return err;
 694 }
 695
 696 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 697 {
 698         struct mlx4_en_priv *priv = netdev_priv(dev);
 699         struct mlx4_en_dev *mdev = priv->mdev;
 700         struct sockaddr *saddr = addr;
 701         unsigned char new_mac[ETH_ALEN + 2];
 702         int err;
 703
 704         if (!is_valid_ether_addr(saddr->sa_data))
 705                 return -EADDRNOTAVAIL;
 706
 707         mutex_lock(&mdev->state_lock);
 708         memcpy(new_mac, saddr->sa_data, ETH_ALEN);
 709         err = mlx4_en_do_set_mac(priv, new_mac);
 710         if (!err)
 711                 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
 712         mutex_unlock(&mdev->state_lock);
 713
 714         return err;
 715 }
 716
 717 static void mlx4_en_clear_list(struct net_device *dev)
 718 {
 719         struct mlx4_en_priv *priv = netdev_priv(dev);
 720         struct mlx4_en_mc_list *tmp, *mc_to_del;
 721
 722         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 723                 list_del(&mc_to_del->list);
 724                 kfree(mc_to_del);
 725         }
 726 }
 727
 728 static void mlx4_en_cache_mclist(struct net_device *dev)
 729 {
 730         struct mlx4_en_priv *priv = netdev_priv(dev);
 731         struct netdev_hw_addr *ha;
 732         struct mlx4_en_mc_list *tmp;
 733
 734         mlx4_en_clear_list(dev);
 735         netdev_for_each_mc_addr(ha, dev) {
 736                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 737                 if (!tmp) {
 738                         mlx4_en_clear_list(dev);
 739                         return;
 740                 }
 741                 memcpy(tmp->addr, ha->addr, ETH_ALEN);
 742                 list_add_tail(&tmp->list, &priv->mc_list);
 743         }
 744 }
 745
 746 static void update_mclist_flags(struct mlx4_en_priv *priv,
 747                                 struct list_head *dst,
 748                                 struct list_head *src)
 749 {
 750         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 751         bool found;
 752
 753         /* Find all the entries that should be removed from dst,
 754          * These are the entries that are not found in src
 755          */
 756         list_for_each_entry(dst_tmp, dst, list) {
 757                 found = false;
 758                 list_for_each_entry(src_tmp, src, list) {
 759                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 760                                 found = true;
 761                                 break;
 762                         }
 763                 }
 764                 if (!found)
 765                         dst_tmp->action = MCLIST_REM;
 766         }
 767
 768         /* Add entries that exist in src but not in dst
 769          * mark them as need to add
 770          */
 771         list_for_each_entry(src_tmp, src, list) {
 772                 found = false;
 773                 list_for_each_entry(dst_tmp, dst, list) {
 774                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 775                                 dst_tmp->action = MCLIST_NONE;
 776                                 found = true;
 777                                 break;
 778                         }
 779                 }
 780                 if (!found) {
 781                         new_mc = kmemdup(src_tmp,
 782                                          sizeof(struct mlx4_en_mc_list),
 783                                          GFP_KERNEL);
 784                         if (!new_mc)
 785                                 return;
 786
 787                         new_mc->action = MCLIST_ADD;
 788                         list_add_tail(&new_mc->list, dst);
 789                 }
 790         }
 791 }
 792
 793 static void mlx4_en_set_rx_mode(struct net_device *dev)
 794 {
 795         struct mlx4_en_priv *priv = netdev_priv(dev);
 796
 797         if (!priv->port_up)
 798                 return;
 799
 800         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 801 }
 802
 803 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 804                                      struct mlx4_en_dev *mdev)
 805 {
 806         int err = 0;
 807
 808         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 809                 if (netif_msg_rx_status(priv))
 810                         en_warn(priv, "Entering promiscuous mode\n");
 811                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 812
 813                 /* Enable promiscouos mode */
 814                 switch (mdev->dev->caps.steering_mode) {
 815                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 816                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 817                                                           priv->port,
 818                                                           priv->base_qpn,
 819                                                           MLX4_FS_ALL_DEFAULT);
 820                         if (err)
 821                                 en_err(priv, "Failed enabling promiscuous mode\n");
 822                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 823                         break;
 824
 825                 case MLX4_STEERING_MODE_B0:
 826                         err = mlx4_unicast_promisc_add(mdev->dev,
 827                                                        priv->base_qpn,
 828                                                        priv->port);
 829                         if (err)
 830                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 831
 832                         /* Add the default qp number as multicast
 833                          * promisc
 834                          */
 835                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 836                                 err = mlx4_multicast_promisc_add(mdev->dev,
 837                                                                  priv->base_qpn,
 838                                                                  priv->port);
 839                                 if (err)
 840                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 841                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 842                         }
 843                         break;
 844
 845                 case MLX4_STEERING_MODE_A0:
 846                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 847                                                      priv->port,
 848                                                      priv->base_qpn,
 849                                                      1);
 850                         if (err)
 851                                 en_err(priv, "Failed enabling promiscuous mode\n");
 852                         break;
 853                 }
 854
 855                 /* Disable port multicast filter (unconditionally) */
 856                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 857                                           0, MLX4_MCAST_DISABLE);
 858                 if (err)
 859                         en_err(priv, "Failed disabling multicast filter\n");
 860         }
 861 }
 862
 863 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 864                                        struct mlx4_en_dev *mdev)
 865 {
 866         int err = 0;
 867
 868         if (netif_msg_rx_status(priv))
 869                 en_warn(priv, "Leaving promiscuous mode\n");
 870         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 871
 872         /* Disable promiscouos mode */
 873         switch (mdev->dev->caps.steering_mode) {
 874         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 875                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 876                                                      priv->port,
 877                                                      MLX4_FS_ALL_DEFAULT);
 878                 if (err)
 879                         en_err(priv, "Failed disabling promiscuous mode\n");
 880                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 881                 break;
 882
 883         case MLX4_STEERING_MODE_B0:
 884                 err = mlx4_unicast_promisc_remove(mdev->dev,
 885                                                   priv->base_qpn,
 886                                                   priv->port);
 887                 if (err)
 888                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 889                 /* Disable Multicast promisc */
 890                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 891                         err = mlx4_multicast_promisc_remove(mdev->dev,
 892                                                             priv->base_qpn,
 893                                                             priv->port);
 894                         if (err)
 895                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 896                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 897                 }
 898                 break;
 899
 900         case MLX4_STEERING_MODE_A0:
 901                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 902                                              priv->port,
 903                                              priv->base_qpn, 0);
 904                 if (err)
 905                         en_err(priv, "Failed disabling promiscuous mode\n");
 906                 break;
 907         }
 908 }
 909
 910 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 911                                  struct net_device *dev,
 912                                  struct mlx4_en_dev *mdev)
 913 {
 914         struct mlx4_en_mc_list *mclist, *tmp;
 915         u64 mcast_addr = 0;
 916         u8 mc_list[16] = {0};
 917         int err = 0;
 918
 919         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 920         if (dev->flags & IFF_ALLMULTI) {
 921                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 922                                           0, MLX4_MCAST_DISABLE);
 923                 if (err)
 924                         en_err(priv, "Failed disabling multicast filter\n");
 925
 926                 /* Add the default qp number as multicast promisc */
 927                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 928                         switch (mdev->dev->caps.steering_mode) {
 929                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 930                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
 931                                                                   priv->port,
 932                                                                   priv->base_qpn,
 933                                                                   MLX4_FS_MC_DEFAULT);
 934                                 break;
 935
 936                         case MLX4_STEERING_MODE_B0:
 937                                 err = mlx4_multicast_promisc_add(mdev->dev,
 938                                                                  priv->base_qpn,
 939                                                                  priv->port);
 940                                 break;
 941
 942                         case MLX4_STEERING_MODE_A0:
 943                                 break;
 944                         }
 945                         if (err)
 946                                 en_err(priv, "Failed entering multicast promisc mode\n");
 947                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 948                 }
 949         } else {
 950                 /* Disable Multicast promisc */
 951                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 952                         switch (mdev->dev->caps.steering_mode) {
 953                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 954                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 955                                                                      priv->port,
 956                                                                      MLX4_FS_MC_DEFAULT);
 957                                 break;
 958
 959                         case MLX4_STEERING_MODE_B0:
 960                                 err = mlx4_multicast_promisc_remove(mdev->dev,
 961                                                                     priv->base_qpn,
 962                                                                     priv->port);
 963                                 break;
 964
 965                         case MLX4_STEERING_MODE_A0:
 966                                 break;
 967                         }
 968                         if (err)
 969                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 970                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 971                 }
 972
 973                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 974                                           0, MLX4_MCAST_DISABLE);
 975                 if (err)
 976                         en_err(priv, "Failed disabling multicast filter\n");
 977
 978                 /* Flush mcast filter and init it with broadcast address */
 979                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
 980                                     1, MLX4_MCAST_CONFIG);
 981
 982                 /* Update multicast list - we cache all addresses so they won't
 983                  * change while HW is updated holding the command semaphor */
 984                 netif_addr_lock_bh(dev);
 985                 mlx4_en_cache_mclist(dev);
 986                 netif_addr_unlock_bh(dev);
 987                 list_for_each_entry(mclist, &priv->mc_list, list) {
 988                         mcast_addr = mlx4_mac_to_u64(mclist->addr);
 989                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
 990                                             mcast_addr, 0, MLX4_MCAST_CONFIG);
 991                 }
 992                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 993                                           0, MLX4_MCAST_ENABLE);
 994                 if (err)
 995                         en_err(priv, "Failed enabling multicast filter\n");
 996
 997                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
 998                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
 999                         if (mclist->action == MCLIST_REM) {
1000                                 /* detach this address and delete from list */
1001                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1002                                 mc_list[5] = priv->port;
1003                                 err = mlx4_multicast_detach(mdev->dev,
1004                                                             &priv->rss_map.indir_qp,
1005                                                             mc_list,
1006                                                             MLX4_PROT_ETH,
1007                                                             mclist->reg_id);
1008                                 if (err)
1009                                         en_err(priv, "Fail to detach multicast address\n");
1010
1011                                 if (mclist->tunnel_reg_id) {
1012                                         err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1013                                         if (err)
1014                                                 en_err(priv, "Failed to detach multicast address\n");
1015                                 }
1016
1017                                 /* remove from list */
1018                                 list_del(&mclist->list);
1019                                 kfree(mclist);
1020                         } else if (mclist->action == MCLIST_ADD) {
1021                                 /* attach the address */
1022                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1023                                 /* needed for B0 steering support */
1024                                 mc_list[5] = priv->port;
1025                                 err = mlx4_multicast_attach(mdev->dev,
1026                                                             &priv->rss_map.indir_qp,
1027                                                             mc_list,
1028                                                             priv->port, 0,
1029                                                             MLX4_PROT_ETH,
1030                                                             &mclist->reg_id);
1031                                 if (err)
1032                                         en_err(priv, "Fail to attach multicast address\n");
1033
1034                                 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1035                                                                &mclist->tunnel_reg_id);
1036                                 if (err)
1037                                         en_err(priv, "Failed to attach multicast address\n");
1038                         }
1039                 }
1040         }
1041 }
1042
1043 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1044                                  struct net_device *dev,
1045                                  struct mlx4_en_dev *mdev)
1046 {
1047         struct netdev_hw_addr *ha;
1048         struct mlx4_mac_entry *entry;
1049         struct hlist_node *tmp;
1050         bool found;
1051         u64 mac;
1052         int err = 0;
1053         struct hlist_head *bucket;
1054         unsigned int i;
1055         int removed = 0;
1056         u32 prev_flags;
1057
1058         /* Note that we do not need to protect our mac_hash traversal with rcu,
1059          * since all modification code is protected by mdev->state_lock
1060          */
1061
1062         /* find what to remove */
1063         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1064                 bucket = &priv->mac_hash[i];
1065                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1066                         found = false;
1067                         netdev_for_each_uc_addr(ha, dev) {
1068                                 if (ether_addr_equal_64bits(entry->mac,
1069                                                             ha->addr)) {
1070                                         found = true;
1071                                         break;
1072                                 }
1073                         }
1074
1075                         /* MAC address of the port is not in uc list */
1076                         if (ether_addr_equal_64bits(entry->mac,
1077                                                     priv->current_mac))
1078                                 found = true;
1079
1080                         if (!found) {
1081                                 mac = mlx4_mac_to_u64(entry->mac);
1082                                 mlx4_en_uc_steer_release(priv, entry->mac,
1083                                                          priv->base_qpn,
1084                                                          entry->reg_id);
1085                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1086
1087                                 hlist_del_rcu(&entry->hlist);
1088                                 kfree_rcu(entry, rcu);
1089                                 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1090                                        entry->mac, priv->port);
1091                                 ++removed;
1092                         }
1093                 }
1094         }
1095
1096         /* if we didn't remove anything, there is no use in trying to add
1097          * again once we are in a forced promisc mode state
1098          */
1099         if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1100                 return;
1101
1102         prev_flags = priv->flags;
1103         priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1104
1105         /* find what to add */
1106         netdev_for_each_uc_addr(ha, dev) {
1107                 found = false;
1108                 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1109                 hlist_for_each_entry(entry, bucket, hlist) {
1110                         if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1111                                 found = true;
1112                                 break;
1113                         }
1114                 }
1115
1116                 if (!found) {
1117                         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1118                         if (!entry) {
1119                                 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1120                                        ha->addr, priv->port);
1121                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1122                                 break;
1123                         }
1124                         mac = mlx4_mac_to_u64(ha->addr);
1125                         memcpy(entry->mac, ha->addr, ETH_ALEN);
1126                         err = mlx4_register_mac(mdev->dev, priv->port, mac);
1127                         if (err < 0) {
1128                                 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1129                                        ha->addr, priv->port, err);
1130                                 kfree(entry);
1131                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1132                                 break;
1133                         }
1134                         err = mlx4_en_uc_steer_add(priv, ha->addr,
1135                                                    &priv->base_qpn,
1136                                                    &entry->reg_id);
1137                         if (err) {
1138                                 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1139                                        ha->addr, priv->port, err);
1140                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1141                                 kfree(entry);
1142                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1143                                 break;
1144                         } else {
1145                                 unsigned int mac_hash;
1146                                 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1147                                        ha->addr, priv->port);
1148                                 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1149                                 bucket = &priv->mac_hash[mac_hash];
1150                                 hlist_add_head_rcu(&entry->hlist, bucket);
1151                         }
1152                 }
1153         }
1154
1155         if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1156                 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1157                         priv->port);
1158         } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1159                 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1160                         priv->port);
1161         }
1162 }
1163
1164 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1165 {
1166         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1167                                                  rx_mode_task);
1168         struct mlx4_en_dev *mdev = priv->mdev;
1169         struct net_device *dev = priv->dev;
1170
1171         mutex_lock(&mdev->state_lock);
1172         if (!mdev->device_up) {
1173                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1174                 goto out;
1175         }
1176         if (!priv->port_up) {
1177                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1178                 goto out;
1179         }
1180
1181         if (!netif_carrier_ok(dev)) {
1182                 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1183                         if (priv->port_state.link_state) {
1184                                 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1185                                 netif_carrier_on(dev);
1186                                 en_dbg(LINK, priv, "Link Up\n");
1187                         }
1188                 }
1189         }
1190
1191         if (dev->priv_flags & IFF_UNICAST_FLT)
1192                 mlx4_en_do_uc_filter(priv, dev, mdev);
1193
1194         /* Promsicuous mode: disable all filters */
1195         if ((dev->flags & IFF_PROMISC) ||
1196             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1197                 mlx4_en_set_promisc_mode(priv, mdev);
1198                 goto out;
1199         }
1200
1201         /* Not in promiscuous mode */
1202         if (priv->flags & MLX4_EN_FLAG_PROMISC)
1203                 mlx4_en_clear_promisc_mode(priv, mdev);
1204
1205         mlx4_en_do_multicast(priv, dev, mdev);
1206 out:
1207         mutex_unlock(&mdev->state_lock);
1208 }
1209
1210 #ifdef CONFIG_NET_POLL_CONTROLLER
1211 static void mlx4_en_netpoll(struct net_device *dev)
1212 {
1213         struct mlx4_en_priv *priv = netdev_priv(dev);
1214         struct mlx4_en_cq *cq;
1215         int i;
1216
1217         for (i = 0; i < priv->tx_ring_num; i++) {
1218                 cq = priv->tx_cq[i];
1219                 napi_schedule(&cq->napi);
1220         }
1221 }
1222 #endif
1223
1224 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv)
1225 {
1226         u64 reg_id;
1227         int err = 0;
1228         int *qpn = &priv->base_qpn;
1229         struct mlx4_mac_entry *entry;
1230
1231         err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
1232         if (err)
1233                 return err;
1234
1235         err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
1236                                        &priv->tunnel_reg_id);
1237         if (err)
1238                 goto tunnel_err;
1239
1240         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1241         if (!entry) {
1242                 err = -ENOMEM;
1243                 goto alloc_err;
1244         }
1245
1246         memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
1247         memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
1248         entry->reg_id = reg_id;
1249         hlist_add_head_rcu(&entry->hlist,
1250                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
1251
1252         return 0;
1253
1254 alloc_err:
1255         if (priv->tunnel_reg_id)
1256                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1257
1258 tunnel_err:
1259         mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
1260         return err;
1261 }
1262
1263 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv)
1264 {
1265         u64 mac;
1266         unsigned int i;
1267         int qpn = priv->base_qpn;
1268         struct hlist_head *bucket;
1269         struct hlist_node *tmp;
1270         struct mlx4_mac_entry *entry;
1271
1272         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1273                 bucket = &priv->mac_hash[i];
1274                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1275                         mac = mlx4_mac_to_u64(entry->mac);
1276                         en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n",
1277                                entry->mac);
1278                         mlx4_en_uc_steer_release(priv, entry->mac,
1279                                                  qpn, entry->reg_id);
1280
1281                         mlx4_unregister_mac(priv->mdev->dev, priv->port, mac);
1282                         hlist_del_rcu(&entry->hlist);
1283                         kfree_rcu(entry, rcu);
1284                 }
1285         }
1286
1287         if (priv->tunnel_reg_id) {
1288                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1289                 priv->tunnel_reg_id = 0;
1290         }
1291 }
1292
1293 static void mlx4_en_tx_timeout(struct net_device *dev)
1294 {
1295         struct mlx4_en_priv *priv = netdev_priv(dev);
1296         struct mlx4_en_dev *mdev = priv->mdev;
1297         int i;
1298
1299         if (netif_msg_timer(priv))
1300                 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1301
1302         for (i = 0; i < priv->tx_ring_num; i++) {
1303                 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1304                         continue;
1305                 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1306                         i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn,
1307                         priv->tx_ring[i]->cons, priv->tx_ring[i]->prod);
1308         }
1309
1310         priv->port_stats.tx_timeout++;
1311         en_dbg(DRV, priv, "Scheduling watchdog\n");
1312         queue_work(mdev->workqueue, &priv->watchdog_task);
1313 }
1314
1315
1316 static struct rtnl_link_stats64 *
1317 mlx4_en_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1318 {
1319         struct mlx4_en_priv *priv = netdev_priv(dev);
1320
1321         spin_lock_bh(&priv->stats_lock);
1322         netdev_stats_to_stats64(stats, &dev->stats);
1323         spin_unlock_bh(&priv->stats_lock);
1324
1325         return stats;
1326 }
1327
1328 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1329 {
1330         struct mlx4_en_cq *cq;
1331         int i;
1332
1333         /* If we haven't received a specific coalescing setting
1334          * (module param), we set the moderation parameters as follows:
1335          * - moder_cnt is set to the number of mtu sized packets to
1336          *   satisfy our coalescing target.
1337          * - moder_time is set to a fixed value.
1338          */
1339         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1340         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1341         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1342         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1343         en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1344                priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1345
1346         /* Setup cq moderation params */
1347         for (i = 0; i < priv->rx_ring_num; i++) {
1348                 cq = priv->rx_cq[i];
1349                 cq->moder_cnt = priv->rx_frames;
1350                 cq->moder_time = priv->rx_usecs;
1351                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1352                 priv->last_moder_packets[i] = 0;
1353                 priv->last_moder_bytes[i] = 0;
1354         }
1355
1356         for (i = 0; i < priv->tx_ring_num; i++) {
1357                 cq = priv->tx_cq[i];
1358                 cq->moder_cnt = priv->tx_frames;
1359                 cq->moder_time = priv->tx_usecs;
1360         }
1361
1362         /* Reset auto-moderation params */
1363         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1364         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1365         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1366         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1367         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1368         priv->adaptive_rx_coal = 1;
1369         priv->last_moder_jiffies = 0;
1370         priv->last_moder_tx_packets = 0;
1371 }
1372
1373 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1374 {
1375         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1376         struct mlx4_en_cq *cq;
1377         unsigned long packets;
1378         unsigned long rate;
1379         unsigned long avg_pkt_size;
1380         unsigned long rx_packets;
1381         unsigned long rx_bytes;
1382         unsigned long rx_pkt_diff;
1383         int moder_time;
1384         int ring, err;
1385
1386         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1387                 return;
1388
1389         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1390                 spin_lock_bh(&priv->stats_lock);
1391                 rx_packets = priv->rx_ring[ring]->packets;
1392                 rx_bytes = priv->rx_ring[ring]->bytes;
1393                 spin_unlock_bh(&priv->stats_lock);
1394
1395                 rx_pkt_diff = ((unsigned long) (rx_packets -
1396                                 priv->last_moder_packets[ring]));
1397                 packets = rx_pkt_diff;
1398                 rate = packets * HZ / period;
1399                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1400                                 priv->last_moder_bytes[ring])) / packets : 0;
1401
1402                 /* Apply auto-moderation only when packet rate
1403                  * exceeds a rate that it matters */
1404                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1405                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1406                         if (rate < priv->pkt_rate_low)
1407                                 moder_time = priv->rx_usecs_low;
1408                         else if (rate > priv->pkt_rate_high)
1409                                 moder_time = priv->rx_usecs_high;
1410                         else
1411                                 moder_time = (rate - priv->pkt_rate_low) *
1412                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1413                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
1414                                         priv->rx_usecs_low;
1415                 } else {
1416                         moder_time = priv->rx_usecs_low;
1417                 }
1418
1419                 if (moder_time != priv->last_moder_time[ring]) {
1420                         priv->last_moder_time[ring] = moder_time;
1421                         cq = priv->rx_cq[ring];
1422                         cq->moder_time = moder_time;
1423                         cq->moder_cnt = priv->rx_frames;
1424                         err = mlx4_en_set_cq_moder(priv, cq);
1425                         if (err)
1426                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1427                                        ring);
1428                 }
1429                 priv->last_moder_packets[ring] = rx_packets;
1430                 priv->last_moder_bytes[ring] = rx_bytes;
1431         }
1432
1433         priv->last_moder_jiffies = jiffies;
1434 }
1435
1436 static void mlx4_en_do_get_stats(struct work_struct *work)
1437 {
1438         struct delayed_work *delay = to_delayed_work(work);
1439         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1440                                                  stats_task);
1441         struct mlx4_en_dev *mdev = priv->mdev;
1442         int err;
1443
1444         mutex_lock(&mdev->state_lock);
1445         if (mdev->device_up) {
1446                 if (priv->port_up) {
1447                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1448                         if (err)
1449                                 en_dbg(HW, priv, "Could not update stats\n");
1450
1451                         mlx4_en_auto_moderation(priv);
1452                 }
1453
1454                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1455         }
1456         if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1457                 mlx4_en_do_set_mac(priv, priv->current_mac);
1458                 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1459         }
1460         mutex_unlock(&mdev->state_lock);
1461 }
1462
1463 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1464  * periodically
1465  */
1466 static void mlx4_en_service_task(struct work_struct *work)
1467 {
1468         struct delayed_work *delay = to_delayed_work(work);
1469         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1470                                                  service_task);
1471         struct mlx4_en_dev *mdev = priv->mdev;
1472
1473         mutex_lock(&mdev->state_lock);
1474         if (mdev->device_up) {
1475                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1476                         mlx4_en_ptp_overflow_check(mdev);
1477
1478                 mlx4_en_recover_from_oom(priv);
1479                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1480                                    SERVICE_TASK_DELAY);
1481         }
1482         mutex_unlock(&mdev->state_lock);
1483 }
1484
1485 static void mlx4_en_linkstate(struct work_struct *work)
1486 {
1487         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1488                                                  linkstate_task);
1489         struct mlx4_en_dev *mdev = priv->mdev;
1490         int linkstate = priv->link_state;
1491
1492         mutex_lock(&mdev->state_lock);
1493         /* If observable port state changed set carrier state and
1494          * report to system log */
1495         if (priv->last_link_state != linkstate) {
1496                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1497                         en_info(priv, "Link Down\n");
1498                         netif_carrier_off(priv->dev);
1499                 } else {
1500                         en_info(priv, "Link Up\n");
1501                         netif_carrier_on(priv->dev);
1502                 }
1503         }
1504         priv->last_link_state = linkstate;
1505         mutex_unlock(&mdev->state_lock);
1506 }
1507
1508 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1509 {
1510         struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1511         int numa_node = priv->mdev->dev->numa_node;
1512
1513         if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1514                 return -ENOMEM;
1515
1516         cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node),
1517                         ring->affinity_mask);
1518         return 0;
1519 }
1520
1521 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1522 {
1523         free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1524 }
1525
1526 static void mlx4_en_init_recycle_ring(struct mlx4_en_priv *priv,
1527                                       int tx_ring_idx)
1528 {
1529         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[tx_ring_idx];
1530         int rr_index;
1531
1532         rr_index = (priv->xdp_ring_num - priv->tx_ring_num) + tx_ring_idx;
1533         if (rr_index >= 0) {
1534                 tx_ring->free_tx_desc = mlx4_en_recycle_tx_desc;
1535                 tx_ring->recycle_ring = priv->rx_ring[rr_index];
1536                 en_dbg(DRV, priv,
1537                        "Set tx_ring[%d]->recycle_ring = rx_ring[%d]\n",
1538                        tx_ring_idx, rr_index);
1539         } else {
1540                 tx_ring->recycle_ring = NULL;
1541         }
1542 }
1543
1544 int mlx4_en_start_port(struct net_device *dev)
1545 {
1546         struct mlx4_en_priv *priv = netdev_priv(dev);
1547         struct mlx4_en_dev *mdev = priv->mdev;
1548         struct mlx4_en_cq *cq;
1549         struct mlx4_en_tx_ring *tx_ring;
1550         int rx_index = 0;
1551         int tx_index = 0;
1552         int err = 0;
1553         int i;
1554         int j;
1555         u8 mc_list[16] = {0};
1556
1557         if (priv->port_up) {
1558                 en_dbg(DRV, priv, "start port called while port already up\n");
1559                 return 0;
1560         }
1561
1562         INIT_LIST_HEAD(&priv->mc_list);
1563         INIT_LIST_HEAD(&priv->curr_list);
1564         INIT_LIST_HEAD(&priv->ethtool_list);
1565         memset(&priv->ethtool_rules[0], 0,
1566                sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1567
1568         /* Calculate Rx buf size */
1569         dev->mtu = min(dev->mtu, priv->max_mtu);
1570         mlx4_en_calc_rx_buf(dev);
1571         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1572
1573         /* Configure rx cq's and rings */
1574         err = mlx4_en_activate_rx_rings(priv);
1575         if (err) {
1576                 en_err(priv, "Failed to activate RX rings\n");
1577                 return err;
1578         }
1579         for (i = 0; i < priv->rx_ring_num; i++) {
1580                 cq = priv->rx_cq[i];
1581
1582                 err = mlx4_en_init_affinity_hint(priv, i);
1583                 if (err) {
1584                         en_err(priv, "Failed preparing IRQ affinity hint\n");
1585                         goto cq_err;
1586                 }
1587
1588                 err = mlx4_en_activate_cq(priv, cq, i);
1589                 if (err) {
1590                         en_err(priv, "Failed activating Rx CQ\n");
1591                         mlx4_en_free_affinity_hint(priv, i);
1592                         goto cq_err;
1593                 }
1594
1595                 for (j = 0; j < cq->size; j++) {
1596                         struct mlx4_cqe *cqe = NULL;
1597
1598                         cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) +
1599                               priv->cqe_factor;
1600                         cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1601                 }
1602
1603                 err = mlx4_en_set_cq_moder(priv, cq);
1604                 if (err) {
1605                         en_err(priv, "Failed setting cq moderation parameters\n");
1606                         mlx4_en_deactivate_cq(priv, cq);
1607                         mlx4_en_free_affinity_hint(priv, i);
1608                         goto cq_err;
1609                 }
1610                 mlx4_en_arm_cq(priv, cq);
1611                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1612                 ++rx_index;
1613         }
1614
1615         /* Set qp number */
1616         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1617         err = mlx4_en_get_qp(priv);
1618         if (err) {
1619                 en_err(priv, "Failed getting eth qp\n");
1620                 goto cq_err;
1621         }
1622         mdev->mac_removed[priv->port] = 0;
1623
1624         priv->counter_index =
1625                         mlx4_get_default_counter_index(mdev->dev, priv->port);
1626
1627         err = mlx4_en_config_rss_steer(priv);
1628         if (err) {
1629                 en_err(priv, "Failed configuring rss steering\n");
1630                 goto mac_err;
1631         }
1632
1633         err = mlx4_en_create_drop_qp(priv);
1634         if (err)
1635                 goto rss_err;
1636
1637         /* Configure tx cq's and rings */
1638         for (i = 0; i < priv->tx_ring_num; i++) {
1639                 /* Configure cq */
1640                 cq = priv->tx_cq[i];
1641                 err = mlx4_en_activate_cq(priv, cq, i);
1642                 if (err) {
1643                         en_err(priv, "Failed allocating Tx CQ\n");
1644                         goto tx_err;
1645                 }
1646                 err = mlx4_en_set_cq_moder(priv, cq);
1647                 if (err) {
1648                         en_err(priv, "Failed setting cq moderation parameters\n");
1649                         mlx4_en_deactivate_cq(priv, cq);
1650                         goto tx_err;
1651                 }
1652                 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1653                 cq->buf->wqe_index = cpu_to_be16(0xffff);
1654
1655                 /* Configure ring */
1656                 tx_ring = priv->tx_ring[i];
1657                 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1658                         i / priv->num_tx_rings_p_up);
1659                 if (err) {
1660                         en_err(priv, "Failed allocating Tx ring\n");
1661                         mlx4_en_deactivate_cq(priv, cq);
1662                         goto tx_err;
1663                 }
1664                 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1665
1666                 mlx4_en_init_recycle_ring(priv, i);
1667
1668                 /* Arm CQ for TX completions */
1669                 mlx4_en_arm_cq(priv, cq);
1670
1671                 /* Set initial ownership of all Tx TXBBs to SW (1) */
1672                 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1673                         *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1674                 ++tx_index;
1675         }
1676
1677         /* Configure port */
1678         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1679                                     priv->rx_skb_size + ETH_FCS_LEN,
1680                                     priv->prof->tx_pause,
1681                                     priv->prof->tx_ppp,
1682                                     priv->prof->rx_pause,
1683                                     priv->prof->rx_ppp);
1684         if (err) {
1685                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1686                        priv->port, err);
1687                 goto tx_err;
1688         }
1689         /* Set default qp number */
1690         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1691         if (err) {
1692                 en_err(priv, "Failed setting default qp numbers\n");
1693                 goto tx_err;
1694         }
1695
1696         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1697                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1698                 if (err) {
1699                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1700                                err);
1701                         goto tx_err;
1702                 }
1703         }
1704
1705         /* Init port */
1706         en_dbg(HW, priv, "Initializing port\n");
1707         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1708         if (err) {
1709                 en_err(priv, "Failed Initializing port\n");
1710                 goto tx_err;
1711         }
1712
1713         /* Set Unicast and VXLAN steering rules */
1714         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 &&
1715             mlx4_en_set_rss_steer_rules(priv))
1716                 mlx4_warn(mdev, "Failed setting steering rules\n");
1717
1718         /* Attach rx QP to bradcast address */
1719         eth_broadcast_addr(&mc_list[10]);
1720         mc_list[5] = priv->port; /* needed for B0 steering support */
1721         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1722                                   priv->port, 0, MLX4_PROT_ETH,
1723                                   &priv->broadcast_id))
1724                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1725
1726         /* Must redo promiscuous mode setup. */
1727         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1728
1729         /* Schedule multicast task to populate multicast list */
1730         queue_work(mdev->workqueue, &priv->rx_mode_task);
1731
1732         if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1733                 udp_tunnel_get_rx_info(dev);
1734
1735         priv->port_up = true;
1736         netif_tx_start_all_queues(dev);
1737         netif_device_attach(dev);
1738
1739         return 0;
1740
1741 tx_err:
1742         while (tx_index--) {
1743                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1744                 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1745         }
1746         mlx4_en_destroy_drop_qp(priv);
1747 rss_err:
1748         mlx4_en_release_rss_steer(priv);
1749 mac_err:
1750         mlx4_en_put_qp(priv);
1751 cq_err:
1752         while (rx_index--) {
1753                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1754                 mlx4_en_free_affinity_hint(priv, rx_index);
1755         }
1756         for (i = 0; i < priv->rx_ring_num; i++)
1757                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1758
1759         return err; /* need to close devices */
1760 }
1761
1762
1763 void mlx4_en_stop_port(struct net_device *dev, int detach)
1764 {
1765         struct mlx4_en_priv *priv = netdev_priv(dev);
1766         struct mlx4_en_dev *mdev = priv->mdev;
1767         struct mlx4_en_mc_list *mclist, *tmp;
1768         struct ethtool_flow_id *flow, *tmp_flow;
1769         int i;
1770         u8 mc_list[16] = {0};
1771
1772         if (!priv->port_up) {
1773                 en_dbg(DRV, priv, "stop port called while port already down\n");
1774                 return;
1775         }
1776
1777         /* close port*/
1778         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1779
1780         /* Synchronize with tx routine */
1781         netif_tx_lock_bh(dev);
1782         if (detach)
1783                 netif_device_detach(dev);
1784         netif_tx_stop_all_queues(dev);
1785         netif_tx_unlock_bh(dev);
1786
1787         netif_tx_disable(dev);
1788
1789         /* Set port as not active */
1790         priv->port_up = false;
1791         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1792
1793         /* Promsicuous mode */
1794         if (mdev->dev->caps.steering_mode ==
1795             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1796                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1797                                  MLX4_EN_FLAG_MC_PROMISC);
1798                 mlx4_flow_steer_promisc_remove(mdev->dev,
1799                                                priv->port,
1800                                                MLX4_FS_ALL_DEFAULT);
1801                 mlx4_flow_steer_promisc_remove(mdev->dev,
1802                                                priv->port,
1803                                                MLX4_FS_MC_DEFAULT);
1804         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1805                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1806
1807                 /* Disable promiscouos mode */
1808                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1809                                             priv->port);
1810
1811                 /* Disable Multicast promisc */
1812                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1813                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1814                                                       priv->port);
1815                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1816                 }
1817         }
1818
1819         /* Detach All multicasts */
1820         eth_broadcast_addr(&mc_list[10]);
1821         mc_list[5] = priv->port; /* needed for B0 steering support */
1822         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1823                               MLX4_PROT_ETH, priv->broadcast_id);
1824         list_for_each_entry(mclist, &priv->curr_list, list) {
1825                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1826                 mc_list[5] = priv->port;
1827                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1828                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1829                 if (mclist->tunnel_reg_id)
1830                         mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1831         }
1832         mlx4_en_clear_list(dev);
1833         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1834                 list_del(&mclist->list);
1835                 kfree(mclist);
1836         }
1837
1838         /* Flush multicast filter */
1839         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1840
1841         /* Remove flow steering rules for the port*/
1842         if (mdev->dev->caps.steering_mode ==
1843             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1844                 ASSERT_RTNL();
1845                 list_for_each_entry_safe(flow, tmp_flow,
1846                                          &priv->ethtool_list, list) {
1847                         mlx4_flow_detach(mdev->dev, flow->id);
1848                         list_del(&flow->list);
1849                 }
1850         }
1851
1852         mlx4_en_destroy_drop_qp(priv);
1853
1854         /* Free TX Rings */
1855         for (i = 0; i < priv->tx_ring_num; i++) {
1856                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1857                 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1858         }
1859         msleep(10);
1860
1861         for (i = 0; i < priv->tx_ring_num; i++)
1862                 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1863
1864         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1865                 mlx4_en_delete_rss_steer_rules(priv);
1866
1867         /* Free RSS qps */
1868         mlx4_en_release_rss_steer(priv);
1869
1870         /* Unregister Mac address for the port */
1871         mlx4_en_put_qp(priv);
1872         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1873                 mdev->mac_removed[priv->port] = 1;
1874
1875         /* Free RX Rings */
1876         for (i = 0; i < priv->rx_ring_num; i++) {
1877                 struct mlx4_en_cq *cq = priv->rx_cq[i];
1878
1879                 napi_synchronize(&cq->napi);
1880                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1881                 mlx4_en_deactivate_cq(priv, cq);
1882
1883                 mlx4_en_free_affinity_hint(priv, i);
1884         }
1885 }
1886
1887 static void mlx4_en_restart(struct work_struct *work)
1888 {
1889         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1890                                                  watchdog_task);
1891         struct mlx4_en_dev *mdev = priv->mdev;
1892         struct net_device *dev = priv->dev;
1893
1894         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1895
1896         rtnl_lock();
1897         mutex_lock(&mdev->state_lock);
1898         if (priv->port_up) {
1899                 mlx4_en_stop_port(dev, 1);
1900                 if (mlx4_en_start_port(dev))
1901                         en_err(priv, "Failed restarting port %d\n", priv->port);
1902         }
1903         mutex_unlock(&mdev->state_lock);
1904         rtnl_unlock();
1905 }
1906
1907 static void mlx4_en_clear_stats(struct net_device *dev)
1908 {
1909         struct mlx4_en_priv *priv = netdev_priv(dev);
1910         struct mlx4_en_dev *mdev = priv->mdev;
1911         int i;
1912
1913         if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1914                 en_dbg(HW, priv, "Failed dumping statistics\n");
1915
1916         memset(&priv->pstats, 0, sizeof(priv->pstats));
1917         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1918         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1919         memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats));
1920         memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats));
1921         memset(&priv->rx_priority_flowstats, 0,
1922                sizeof(priv->rx_priority_flowstats));
1923         memset(&priv->tx_priority_flowstats, 0,
1924                sizeof(priv->tx_priority_flowstats));
1925         memset(&priv->pf_stats, 0, sizeof(priv->pf_stats));
1926
1927         for (i = 0; i < priv->tx_ring_num; i++) {
1928                 priv->tx_ring[i]->bytes = 0;
1929                 priv->tx_ring[i]->packets = 0;
1930                 priv->tx_ring[i]->tx_csum = 0;
1931                 priv->tx_ring[i]->tx_dropped = 0;
1932                 priv->tx_ring[i]->queue_stopped = 0;
1933                 priv->tx_ring[i]->wake_queue = 0;
1934                 priv->tx_ring[i]->tso_packets = 0;
1935                 priv->tx_ring[i]->xmit_more = 0;
1936         }
1937         for (i = 0; i < priv->rx_ring_num; i++) {
1938                 priv->rx_ring[i]->bytes = 0;
1939                 priv->rx_ring[i]->packets = 0;
1940                 priv->rx_ring[i]->csum_ok = 0;
1941                 priv->rx_ring[i]->csum_none = 0;
1942                 priv->rx_ring[i]->csum_complete = 0;
1943         }
1944 }
1945
1946 static int mlx4_en_open(struct net_device *dev)
1947 {
1948         struct mlx4_en_priv *priv = netdev_priv(dev);
1949         struct mlx4_en_dev *mdev = priv->mdev;
1950         int err = 0;
1951
1952         mutex_lock(&mdev->state_lock);
1953
1954         if (!mdev->device_up) {
1955                 en_err(priv, "Cannot open - device down/disabled\n");
1956                 err = -EBUSY;
1957                 goto out;
1958         }
1959
1960         /* Reset HW statistics and SW counters */
1961         mlx4_en_clear_stats(dev);
1962
1963         err = mlx4_en_start_port(dev);
1964         if (err)
1965                 en_err(priv, "Failed starting port:%d\n", priv->port);
1966
1967 out:
1968         mutex_unlock(&mdev->state_lock);
1969         return err;
1970 }
1971
1972
1973 static int mlx4_en_close(struct net_device *dev)
1974 {
1975         struct mlx4_en_priv *priv = netdev_priv(dev);
1976         struct mlx4_en_dev *mdev = priv->mdev;
1977
1978         en_dbg(IFDOWN, priv, "Close port called\n");
1979
1980         mutex_lock(&mdev->state_lock);
1981
1982         mlx4_en_stop_port(dev, 0);
1983         netif_carrier_off(dev);
1984
1985         mutex_unlock(&mdev->state_lock);
1986         return 0;
1987 }
1988
1989 static void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1990 {
1991         int i;
1992
1993 #ifdef CONFIG_RFS_ACCEL
1994         priv->dev->rx_cpu_rmap = NULL;
1995 #endif
1996
1997         for (i = 0; i < priv->tx_ring_num; i++) {
1998                 if (priv->tx_ring && priv->tx_ring[i])
1999                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
2000                 if (priv->tx_cq && priv->tx_cq[i])
2001                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
2002         }
2003
2004         for (i = 0; i < priv->rx_ring_num; i++) {
2005                 if (priv->rx_ring[i])
2006                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2007                                 priv->prof->rx_ring_size, priv->stride);
2008                 if (priv->rx_cq[i])
2009                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2010         }
2011
2012 }
2013
2014 static int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
2015 {
2016         struct mlx4_en_port_profile *prof = priv->prof;
2017         int i;
2018         int node;
2019
2020         /* Create tx Rings */
2021         for (i = 0; i < priv->tx_ring_num; i++) {
2022                 node = cpu_to_node(i % num_online_cpus());
2023                 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
2024                                       prof->tx_ring_size, i, TX, node))
2025                         goto err;
2026
2027                 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
2028                                            prof->tx_ring_size, TXBB_SIZE,
2029                                            node, i))
2030                         goto err;
2031         }
2032
2033         /* Create rx Rings */
2034         for (i = 0; i < priv->rx_ring_num; i++) {
2035                 node = cpu_to_node(i % num_online_cpus());
2036                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2037                                       prof->rx_ring_size, i, RX, node))
2038                         goto err;
2039
2040                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2041                                            prof->rx_ring_size, priv->stride,
2042                                            node))
2043                         goto err;
2044         }
2045
2046 #ifdef CONFIG_RFS_ACCEL
2047         priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port);
2048 #endif
2049
2050         return 0;
2051
2052 err:
2053         en_err(priv, "Failed to allocate NIC resources\n");
2054         for (i = 0; i < priv->rx_ring_num; i++) {
2055                 if (priv->rx_ring[i])
2056                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2057                                                 prof->rx_ring_size,
2058                                                 priv->stride);
2059                 if (priv->rx_cq[i])
2060                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2061         }
2062         for (i = 0; i < priv->tx_ring_num; i++) {
2063                 if (priv->tx_ring[i])
2064                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
2065                 if (priv->tx_cq[i])
2066                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
2067         }
2068         return -ENOMEM;
2069 }
2070
2071 static void mlx4_en_shutdown(struct net_device *dev)
2072 {
2073         rtnl_lock();
2074         netif_device_detach(dev);
2075         mlx4_en_close(dev);
2076         rtnl_unlock();
2077 }
2078
2079 static int mlx4_en_copy_priv(struct mlx4_en_priv *dst,
2080                              struct mlx4_en_priv *src,
2081                              struct mlx4_en_port_profile *prof)
2082 {
2083         memcpy(&dst->hwtstamp_config, &prof->hwtstamp_config,
2084                sizeof(dst->hwtstamp_config));
2085         dst->num_tx_rings_p_up = src->mdev->profile.num_tx_rings_p_up;
2086         dst->tx_ring_num = prof->tx_ring_num;
2087         dst->rx_ring_num = prof->rx_ring_num;
2088         dst->flags = prof->flags;
2089         dst->mdev = src->mdev;
2090         dst->port = src->port;
2091         dst->dev = src->dev;
2092         dst->prof = prof;
2093         dst->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2094                                          DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2095
2096         dst->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
2097                                 GFP_KERNEL);
2098         if (!dst->tx_ring)
2099                 return -ENOMEM;
2100
2101         dst->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
2102                               GFP_KERNEL);
2103         if (!dst->tx_cq) {
2104                 kfree(dst->tx_ring);
2105                 return -ENOMEM;
2106         }
2107         return 0;
2108 }
2109
2110 static void mlx4_en_update_priv(struct mlx4_en_priv *dst,
2111                                 struct mlx4_en_priv *src)
2112 {
2113         memcpy(dst->rx_ring, src->rx_ring,
2114                sizeof(struct mlx4_en_rx_ring *) * src->rx_ring_num);
2115         memcpy(dst->rx_cq, src->rx_cq,
2116                sizeof(struct mlx4_en_cq *) * src->rx_ring_num);
2117         memcpy(&dst->hwtstamp_config, &src->hwtstamp_config,
2118                sizeof(dst->hwtstamp_config));
2119         dst->tx_ring_num = src->tx_ring_num;
2120         dst->rx_ring_num = src->rx_ring_num;
2121         dst->tx_ring = src->tx_ring;
2122         dst->tx_cq = src->tx_cq;
2123         memcpy(dst->prof, src->prof, sizeof(struct mlx4_en_port_profile));
2124 }
2125
2126 int mlx4_en_try_alloc_resources(struct mlx4_en_priv *priv,
2127                                 struct mlx4_en_priv *tmp,
2128                                 struct mlx4_en_port_profile *prof)
2129 {
2130         mlx4_en_copy_priv(tmp, priv, prof);
2131
2132         if (mlx4_en_alloc_resources(tmp)) {
2133                 en_warn(priv,
2134                         "%s: Resource allocation failed, using previous configuration\n",
2135                         __func__);
2136                 kfree(tmp->tx_ring);
2137                 kfree(tmp->tx_cq);
2138                 return -ENOMEM;
2139         }
2140         return 0;
2141 }
2142
2143 void mlx4_en_safe_replace_resources(struct mlx4_en_priv *priv,
2144                                     struct mlx4_en_priv *tmp)
2145 {
2146         mlx4_en_free_resources(priv);
2147         mlx4_en_update_priv(priv, tmp);
2148 }
2149
2150 void mlx4_en_destroy_netdev(struct net_device *dev)
2151 {
2152         struct mlx4_en_priv *priv = netdev_priv(dev);
2153         struct mlx4_en_dev *mdev = priv->mdev;
2154         bool shutdown = mdev->dev->persist->interface_state &
2155                                             MLX4_INTERFACE_STATE_SHUTDOWN;
2156
2157         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2158
2159         /* Unregister device - this will close the port if it was up */
2160         if (priv->registered) {
2161                 devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev,
2162                                                               priv->port));
2163                 if (shutdown)
2164                         mlx4_en_shutdown(dev);
2165                 else
2166                         unregister_netdev(dev);
2167         }
2168
2169         if (priv->allocated)
2170                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2171
2172         cancel_delayed_work(&priv->stats_task);
2173         cancel_delayed_work(&priv->service_task);
2174         /* flush any pending task for this netdev */
2175         flush_workqueue(mdev->workqueue);
2176
2177         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2178                 mlx4_en_remove_timestamp(mdev);
2179
2180         /* Detach the netdev so tasks would not attempt to access it */
2181         mutex_lock(&mdev->state_lock);
2182         mdev->pndev[priv->port] = NULL;
2183         mdev->upper[priv->port] = NULL;
2184         mutex_unlock(&mdev->state_lock);
2185
2186 #ifdef CONFIG_RFS_ACCEL
2187         mlx4_en_cleanup_filters(priv);
2188 #endif
2189
2190         mlx4_en_free_resources(priv);
2191
2192         kfree(priv->tx_ring);
2193         kfree(priv->tx_cq);
2194
2195         if (!shutdown)
2196                 free_netdev(dev);
2197 }
2198
2199 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2200 {
2201         struct mlx4_en_priv *priv = netdev_priv(dev);
2202         struct mlx4_en_dev *mdev = priv->mdev;
2203         int err = 0;
2204
2205         en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2206                  dev->mtu, new_mtu);
2207
2208         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
2209                 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
2210                 return -EPERM;
2211         }
2212         if (priv->xdp_ring_num && MLX4_EN_EFF_MTU(new_mtu) > FRAG_SZ0) {
2213                 en_err(priv, "MTU size:%d requires frags but XDP running\n",
2214                        new_mtu);
2215                 return -EOPNOTSUPP;
2216         }
2217         dev->mtu = new_mtu;
2218
2219         if (netif_running(dev)) {
2220                 mutex_lock(&mdev->state_lock);
2221                 if (!mdev->device_up) {
2222                         /* NIC is probably restarting - let watchdog task reset
2223                          * the port */
2224                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2225                 } else {
2226                         mlx4_en_stop_port(dev, 1);
2227                         err = mlx4_en_start_port(dev);
2228                         if (err) {
2229                                 en_err(priv, "Failed restarting port:%d\n",
2230                                          priv->port);
2231                                 queue_work(mdev->workqueue, &priv->watchdog_task);
2232                         }
2233                 }
2234                 mutex_unlock(&mdev->state_lock);
2235         }
2236         return 0;
2237 }
2238
2239 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2240 {
2241         struct mlx4_en_priv *priv = netdev_priv(dev);
2242         struct mlx4_en_dev *mdev = priv->mdev;
2243         struct hwtstamp_config config;
2244
2245         if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2246                 return -EFAULT;
2247
2248         /* reserved for future extensions */
2249         if (config.flags)
2250                 return -EINVAL;
2251
2252         /* device doesn't support time stamping */
2253         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2254                 return -EINVAL;
2255
2256         /* TX HW timestamp */
2257         switch (config.tx_type) {
2258         case HWTSTAMP_TX_OFF:
2259         case HWTSTAMP_TX_ON:
2260                 break;
2261         default:
2262                 return -ERANGE;
2263         }
2264
2265         /* RX HW timestamp */
2266         switch (config.rx_filter) {
2267         case HWTSTAMP_FILTER_NONE:
2268                 break;
2269         case HWTSTAMP_FILTER_ALL:
2270         case HWTSTAMP_FILTER_SOME:
2271         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2272         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2273         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2274         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2275         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2276         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2277         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2278         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2279         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2280         case HWTSTAMP_FILTER_PTP_V2_EVENT:
2281         case HWTSTAMP_FILTER_PTP_V2_SYNC:
2282         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2283                 config.rx_filter = HWTSTAMP_FILTER_ALL;
2284                 break;
2285         default:
2286                 return -ERANGE;
2287         }
2288
2289         if (mlx4_en_reset_config(dev, config, dev->features)) {
2290                 config.tx_type = HWTSTAMP_TX_OFF;
2291                 config.rx_filter = HWTSTAMP_FILTER_NONE;
2292         }
2293
2294         return copy_to_user(ifr->ifr_data, &config,
2295                             sizeof(config)) ? -EFAULT : 0;
2296 }
2297
2298 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2299 {
2300         struct mlx4_en_priv *priv = netdev_priv(dev);
2301
2302         return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2303                             sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2304 }
2305
2306 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2307 {
2308         switch (cmd) {
2309         case SIOCSHWTSTAMP:
2310                 return mlx4_en_hwtstamp_set(dev, ifr);
2311         case SIOCGHWTSTAMP:
2312                 return mlx4_en_hwtstamp_get(dev, ifr);
2313         default:
2314                 return -EOPNOTSUPP;
2315         }
2316 }
2317
2318 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev,
2319                                               netdev_features_t features)
2320 {
2321         struct mlx4_en_priv *en_priv = netdev_priv(netdev);
2322         struct mlx4_en_dev *mdev = en_priv->mdev;
2323
2324         /* Since there is no support for separate RX C-TAG/S-TAG vlan accel
2325          * enable/disable make sure S-TAG flag is always in same state as
2326          * C-TAG.
2327          */
2328         if (features & NETIF_F_HW_VLAN_CTAG_RX &&
2329             !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2330                 features |= NETIF_F_HW_VLAN_STAG_RX;
2331         else
2332                 features &= ~NETIF_F_HW_VLAN_STAG_RX;
2333
2334         return features;
2335 }
2336
2337 static int mlx4_en_set_features(struct net_device *netdev,
2338                 netdev_features_t features)
2339 {
2340         struct mlx4_en_priv *priv = netdev_priv(netdev);
2341         bool reset = false;
2342         int ret = 0;
2343
2344         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) {
2345                 en_info(priv, "Turn %s RX-FCS\n",
2346                         (features & NETIF_F_RXFCS) ? "ON" : "OFF");
2347                 reset = true;
2348         }
2349
2350         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
2351                 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
2352
2353                 en_info(priv, "Turn %s RX-ALL\n",
2354                         ignore_fcs_value ? "ON" : "OFF");
2355                 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev,
2356                                               priv->port, ignore_fcs_value);
2357                 if (ret)
2358                         return ret;
2359         }
2360
2361         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2362                 en_info(priv, "Turn %s RX vlan strip offload\n",
2363                         (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2364                 reset = true;
2365         }
2366
2367         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
2368                 en_info(priv, "Turn %s TX vlan strip offload\n",
2369                         (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF");
2370
2371         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX))
2372                 en_info(priv, "Turn %s TX S-VLAN strip offload\n",
2373                         (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF");
2374
2375         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) {
2376                 en_info(priv, "Turn %s loopback\n",
2377                         (features & NETIF_F_LOOPBACK) ? "ON" : "OFF");
2378                 mlx4_en_update_loopback_state(netdev, features);
2379         }
2380
2381         if (reset) {
2382                 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config,
2383                                            features);
2384                 if (ret)
2385                         return ret;
2386         }
2387
2388         return 0;
2389 }
2390
2391 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2392 {
2393         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2394         struct mlx4_en_dev *mdev = en_priv->mdev;
2395         u64 mac_u64 = mlx4_mac_to_u64(mac);
2396
2397         if (is_multicast_ether_addr(mac))
2398                 return -EINVAL;
2399
2400         return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2401 }
2402
2403 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2404 {
2405         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2406         struct mlx4_en_dev *mdev = en_priv->mdev;
2407
2408         return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2409 }
2410
2411 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
2412                                int max_tx_rate)
2413 {
2414         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2415         struct mlx4_en_dev *mdev = en_priv->mdev;
2416
2417         return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate,
2418                                 max_tx_rate);
2419 }
2420
2421 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2422 {
2423         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2424         struct mlx4_en_dev *mdev = en_priv->mdev;
2425
2426         return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2427 }
2428
2429 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2430 {
2431         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2432         struct mlx4_en_dev *mdev = en_priv->mdev;
2433
2434         return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2435 }
2436
2437 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2438 {
2439         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2440         struct mlx4_en_dev *mdev = en_priv->mdev;
2441
2442         return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2443 }
2444
2445 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf,
2446                                 struct ifla_vf_stats *vf_stats)
2447 {
2448         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2449         struct mlx4_en_dev *mdev = en_priv->mdev;
2450
2451         return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats);
2452 }
2453
2454 #define PORT_ID_BYTE_LEN 8
2455 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2456                                     struct netdev_phys_item_id *ppid)
2457 {
2458         struct mlx4_en_priv *priv = netdev_priv(dev);
2459         struct mlx4_dev *mdev = priv->mdev->dev;
2460         int i;
2461         u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2462
2463         if (!phys_port_id)
2464                 return -EOPNOTSUPP;
2465
2466         ppid->id_len = sizeof(phys_port_id);
2467         for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2468                 ppid->id[i] =  phys_port_id & 0xff;
2469                 phys_port_id >>= 8;
2470         }
2471         return 0;
2472 }
2473
2474 static void mlx4_en_add_vxlan_offloads(struct work_struct *work)
2475 {
2476         int ret;
2477         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2478                                                  vxlan_add_task);
2479
2480         ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2481         if (ret)
2482                 goto out;
2483
2484         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2485                                   VXLAN_STEER_BY_OUTER_MAC, 1);
2486 out:
2487         if (ret) {
2488                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2489                 return;
2490         }
2491
2492         /* set offloads */
2493         priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2494                                       NETIF_F_RXCSUM |
2495                                       NETIF_F_TSO | NETIF_F_TSO6 |
2496                                       NETIF_F_GSO_UDP_TUNNEL |
2497                                       NETIF_F_GSO_UDP_TUNNEL_CSUM |
2498                                       NETIF_F_GSO_PARTIAL;
2499 }
2500
2501 static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
2502 {
2503         int ret;
2504         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2505                                                  vxlan_del_task);
2506         /* unset offloads */
2507         priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2508                                         NETIF_F_RXCSUM |
2509                                         NETIF_F_TSO | NETIF_F_TSO6 |
2510                                         NETIF_F_GSO_UDP_TUNNEL |
2511                                         NETIF_F_GSO_UDP_TUNNEL_CSUM |
2512                                         NETIF_F_GSO_PARTIAL);
2513
2514         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2515                                   VXLAN_STEER_BY_OUTER_MAC, 0);
2516         if (ret)
2517                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2518
2519         priv->vxlan_port = 0;
2520 }
2521
2522 static void mlx4_en_add_vxlan_port(struct  net_device *dev,
2523                                    struct udp_tunnel_info *ti)
2524 {
2525         struct mlx4_en_priv *priv = netdev_priv(dev);
2526         __be16 port = ti->port;
2527         __be16 current_port;
2528
2529         if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
2530                 return;
2531
2532         if (ti->sa_family != AF_INET)
2533                 return;
2534
2535         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2536                 return;
2537
2538         current_port = priv->vxlan_port;
2539         if (current_port && current_port != port) {
2540                 en_warn(priv, "vxlan port %d configured, can't add port %d\n",
2541                         ntohs(current_port), ntohs(port));
2542                 return;
2543         }
2544
2545         priv->vxlan_port = port;
2546         queue_work(priv->mdev->workqueue, &priv->vxlan_add_task);
2547 }
2548
2549 static void mlx4_en_del_vxlan_port(struct  net_device *dev,
2550                                    struct udp_tunnel_info *ti)
2551 {
2552         struct mlx4_en_priv *priv = netdev_priv(dev);
2553         __be16 port = ti->port;
2554         __be16 current_port;
2555
2556         if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
2557                 return;
2558
2559         if (ti->sa_family != AF_INET)
2560                 return;
2561
2562         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2563                 return;
2564
2565         current_port = priv->vxlan_port;
2566         if (current_port != port) {
2567                 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port));
2568                 return;
2569         }
2570
2571         queue_work(priv->mdev->workqueue, &priv->vxlan_del_task);
2572 }
2573
2574 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2575                                                 struct net_device *dev,
2576                                                 netdev_features_t features)
2577 {
2578         features = vlan_features_check(skb, features);
2579         features = vxlan_features_check(skb, features);
2580
2581         /* The ConnectX-3 doesn't support outer IPv6 checksums but it does
2582          * support inner IPv6 checksums and segmentation so  we need to
2583          * strip that feature if this is an IPv6 encapsulated frame.
2584          */
2585         if (skb->encapsulation &&
2586             (skb->ip_summed == CHECKSUM_PARTIAL)) {
2587                 struct mlx4_en_priv *priv = netdev_priv(dev);
2588
2589                 if (!priv->vxlan_port ||
2590                     (ip_hdr(skb)->version != 4) ||
2591                     (udp_hdr(skb)->dest != priv->vxlan_port))
2592                         features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
2593         }
2594
2595         return features;
2596 }
2597
2598 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate)
2599 {
2600         struct mlx4_en_priv *priv = netdev_priv(dev);
2601         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[queue_index];
2602         struct mlx4_update_qp_params params;
2603         int err;
2604
2605         if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT))
2606                 return -EOPNOTSUPP;
2607
2608         /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */
2609         if (maxrate >> 12) {
2610                 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS;
2611                 params.rate_val  = maxrate / 1000;
2612         } else if (maxrate) {
2613                 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS;
2614                 params.rate_val  = maxrate;
2615         } else { /* zero serves to revoke the QP rate-limitation */
2616                 params.rate_unit = 0;
2617                 params.rate_val  = 0;
2618         }
2619
2620         err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT,
2621                              &params);
2622         return err;
2623 }
2624
2625 static int mlx4_xdp_set(struct net_device *dev, struct bpf_prog *prog)
2626 {
2627         struct mlx4_en_priv *priv = netdev_priv(dev);
2628         struct mlx4_en_dev *mdev = priv->mdev;
2629         struct bpf_prog *old_prog;
2630         int xdp_ring_num;
2631         int port_up = 0;
2632         int err;
2633         int i;
2634
2635         xdp_ring_num = prog ? ALIGN(priv->rx_ring_num, MLX4_EN_NUM_UP) : 0;
2636
2637         /* No need to reconfigure buffers when simply swapping the
2638          * program for a new one.
2639          */
2640         if (priv->xdp_ring_num == xdp_ring_num) {
2641                 if (prog) {
2642                         prog = bpf_prog_add(prog, priv->rx_ring_num - 1);
2643                         if (IS_ERR(prog))
2644                                 return PTR_ERR(prog);
2645                 }
2646                 for (i = 0; i < priv->rx_ring_num; i++) {
2647                         /* This xchg is paired with READ_ONCE in the fastpath */
2648                         old_prog = xchg(&priv->rx_ring[i]->xdp_prog, prog);
2649                         if (old_prog)
2650                                 bpf_prog_put(old_prog);
2651                 }
2652                 return 0;
2653         }
2654
2655         if (priv->num_frags > 1) {
2656                 en_err(priv, "Cannot set XDP if MTU requires multiple frags\n");
2657                 return -EOPNOTSUPP;
2658         }
2659
2660         if (priv->tx_ring_num < xdp_ring_num + MLX4_EN_NUM_UP) {
2661                 en_err(priv,
2662                        "Minimum %d tx channels required to run XDP\n",
2663                        (xdp_ring_num + MLX4_EN_NUM_UP) / MLX4_EN_NUM_UP);
2664                 return -EINVAL;
2665         }
2666
2667         if (prog) {
2668                 prog = bpf_prog_add(prog, priv->rx_ring_num - 1);
2669                 if (IS_ERR(prog))
2670                         return PTR_ERR(prog);
2671         }
2672
2673         mutex_lock(&mdev->state_lock);
2674         if (priv->port_up) {
2675                 port_up = 1;
2676                 mlx4_en_stop_port(dev, 1);
2677         }
2678
2679         priv->xdp_ring_num = xdp_ring_num;
2680         netif_set_real_num_tx_queues(dev, priv->tx_ring_num -
2681                                                         priv->xdp_ring_num);
2682
2683         for (i = 0; i < priv->rx_ring_num; i++) {
2684                 old_prog = xchg(&priv->rx_ring[i]->xdp_prog, prog);
2685                 if (old_prog)
2686                         bpf_prog_put(old_prog);
2687         }
2688
2689         if (port_up) {
2690                 err = mlx4_en_start_port(dev);
2691                 if (err) {
2692                         en_err(priv, "Failed starting port %d for XDP change\n",
2693                                priv->port);
2694                         queue_work(mdev->workqueue, &priv->watchdog_task);
2695                 }
2696         }
2697
2698         mutex_unlock(&mdev->state_lock);
2699         return 0;
2700 }
2701
2702 static bool mlx4_xdp_attached(struct net_device *dev)
2703 {
2704         struct mlx4_en_priv *priv = netdev_priv(dev);
2705
2706         return !!priv->xdp_ring_num;
2707 }
2708
2709 static int mlx4_xdp(struct net_device *dev, struct netdev_xdp *xdp)
2710 {
2711         switch (xdp->command) {
2712         case XDP_SETUP_PROG:
2713                 return mlx4_xdp_set(dev, xdp->prog);
2714         case XDP_QUERY_PROG:
2715                 xdp->prog_attached = mlx4_xdp_attached(dev);
2716                 return 0;
2717         default:
2718                 return -EINVAL;
2719         }
2720 }
2721
2722 static const struct net_device_ops mlx4_netdev_ops = {
2723         .ndo_open               = mlx4_en_open,
2724         .ndo_stop               = mlx4_en_close,
2725         .ndo_start_xmit         = mlx4_en_xmit,
2726         .ndo_select_queue       = mlx4_en_select_queue,
2727         .ndo_get_stats64        = mlx4_en_get_stats64,
2728         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2729         .ndo_set_mac_address    = mlx4_en_set_mac,
2730         .ndo_validate_addr      = eth_validate_addr,
2731         .ndo_change_mtu         = mlx4_en_change_mtu,
2732         .ndo_do_ioctl           = mlx4_en_ioctl,
2733         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2734         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2735         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2736 #ifdef CONFIG_NET_POLL_CONTROLLER
2737         .ndo_poll_controller    = mlx4_en_netpoll,
2738 #endif
2739         .ndo_set_features       = mlx4_en_set_features,
2740         .ndo_fix_features       = mlx4_en_fix_features,
2741         .ndo_setup_tc           = __mlx4_en_setup_tc,
2742 #ifdef CONFIG_RFS_ACCEL
2743         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2744 #endif
2745         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2746         .ndo_udp_tunnel_add     = mlx4_en_add_vxlan_port,
2747         .ndo_udp_tunnel_del     = mlx4_en_del_vxlan_port,
2748         .ndo_features_check     = mlx4_en_features_check,
2749         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2750         .ndo_xdp                = mlx4_xdp,
2751 };
2752
2753 static const struct net_device_ops mlx4_netdev_ops_master = {
2754         .ndo_open               = mlx4_en_open,
2755         .ndo_stop               = mlx4_en_close,
2756         .ndo_start_xmit         = mlx4_en_xmit,
2757         .ndo_select_queue       = mlx4_en_select_queue,
2758         .ndo_get_stats64        = mlx4_en_get_stats64,
2759         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2760         .ndo_set_mac_address    = mlx4_en_set_mac,
2761         .ndo_validate_addr      = eth_validate_addr,
2762         .ndo_change_mtu         = mlx4_en_change_mtu,
2763         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2764         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2765         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2766         .ndo_set_vf_mac         = mlx4_en_set_vf_mac,
2767         .ndo_set_vf_vlan        = mlx4_en_set_vf_vlan,
2768         .ndo_set_vf_rate        = mlx4_en_set_vf_rate,
2769         .ndo_set_vf_spoofchk    = mlx4_en_set_vf_spoofchk,
2770         .ndo_set_vf_link_state  = mlx4_en_set_vf_link_state,
2771         .ndo_get_vf_stats       = mlx4_en_get_vf_stats,
2772         .ndo_get_vf_config      = mlx4_en_get_vf_config,
2773 #ifdef CONFIG_NET_POLL_CONTROLLER
2774         .ndo_poll_controller    = mlx4_en_netpoll,
2775 #endif
2776         .ndo_set_features       = mlx4_en_set_features,
2777         .ndo_fix_features       = mlx4_en_fix_features,
2778         .ndo_setup_tc           = __mlx4_en_setup_tc,
2779 #ifdef CONFIG_RFS_ACCEL
2780         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2781 #endif
2782         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2783         .ndo_udp_tunnel_add     = mlx4_en_add_vxlan_port,
2784         .ndo_udp_tunnel_del     = mlx4_en_del_vxlan_port,
2785         .ndo_features_check     = mlx4_en_features_check,
2786         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2787         .ndo_xdp                = mlx4_xdp,
2788 };
2789
2790 struct mlx4_en_bond {
2791         struct work_struct work;
2792         struct mlx4_en_priv *priv;
2793         int is_bonded;
2794         struct mlx4_port_map port_map;
2795 };
2796
2797 static void mlx4_en_bond_work(struct work_struct *work)
2798 {
2799         struct mlx4_en_bond *bond = container_of(work,
2800                                                      struct mlx4_en_bond,
2801                                                      work);
2802         int err = 0;
2803         struct mlx4_dev *dev = bond->priv->mdev->dev;
2804
2805         if (bond->is_bonded) {
2806                 if (!mlx4_is_bonded(dev)) {
2807                         err = mlx4_bond(dev);
2808                         if (err)
2809                                 en_err(bond->priv, "Fail to bond device\n");
2810                 }
2811                 if (!err) {
2812                         err = mlx4_port_map_set(dev, &bond->port_map);
2813                         if (err)
2814                                 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n",
2815                                        bond->port_map.port1,
2816                                        bond->port_map.port2,
2817                                        err);
2818                 }
2819         } else if (mlx4_is_bonded(dev)) {
2820                 err = mlx4_unbond(dev);
2821                 if (err)
2822                         en_err(bond->priv, "Fail to unbond device\n");
2823         }
2824         dev_put(bond->priv->dev);
2825         kfree(bond);
2826 }
2827
2828 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded,
2829                                    u8 v2p_p1, u8 v2p_p2)
2830 {
2831         struct mlx4_en_bond *bond = NULL;
2832
2833         bond = kzalloc(sizeof(*bond), GFP_ATOMIC);
2834         if (!bond)
2835                 return -ENOMEM;
2836
2837         INIT_WORK(&bond->work, mlx4_en_bond_work);
2838         bond->priv = priv;
2839         bond->is_bonded = is_bonded;
2840         bond->port_map.port1 = v2p_p1;
2841         bond->port_map.port2 = v2p_p2;
2842         dev_hold(priv->dev);
2843         queue_work(priv->mdev->workqueue, &bond->work);
2844         return 0;
2845 }
2846
2847 int mlx4_en_netdev_event(struct notifier_block *this,
2848                          unsigned long event, void *ptr)
2849 {
2850         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
2851         u8 port = 0;
2852         struct mlx4_en_dev *mdev;
2853         struct mlx4_dev *dev;
2854         int i, num_eth_ports = 0;
2855         bool do_bond = true;
2856         struct mlx4_en_priv *priv;
2857         u8 v2p_port1 = 0;
2858         u8 v2p_port2 = 0;
2859
2860         if (!net_eq(dev_net(ndev), &init_net))
2861                 return NOTIFY_DONE;
2862
2863         mdev = container_of(this, struct mlx4_en_dev, nb);
2864         dev = mdev->dev;
2865
2866         /* Go into this mode only when two network devices set on two ports
2867          * of the same mlx4 device are slaves of the same bonding master
2868          */
2869         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
2870                 ++num_eth_ports;
2871                 if (!port && (mdev->pndev[i] == ndev))
2872                         port = i;
2873                 mdev->upper[i] = mdev->pndev[i] ?
2874                         netdev_master_upper_dev_get(mdev->pndev[i]) : NULL;
2875                 /* condition not met: network device is a slave */
2876                 if (!mdev->upper[i])
2877                         do_bond = false;
2878                 if (num_eth_ports < 2)
2879                         continue;
2880                 /* condition not met: same master */
2881                 if (mdev->upper[i] != mdev->upper[i-1])
2882                         do_bond = false;
2883         }
2884         /* condition not met: 2 salves */
2885         do_bond = (num_eth_ports ==  2) ? do_bond : false;
2886
2887         /* handle only events that come with enough info */
2888         if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
2889                 return NOTIFY_DONE;
2890
2891         priv = netdev_priv(ndev);
2892         if (do_bond) {
2893                 struct netdev_notifier_bonding_info *notifier_info = ptr;
2894                 struct netdev_bonding_info *bonding_info =
2895                         &notifier_info->bonding_info;
2896
2897                 /* required mode 1, 2 or 4 */
2898                 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
2899                     (bonding_info->master.bond_mode != BOND_MODE_XOR) &&
2900                     (bonding_info->master.bond_mode != BOND_MODE_8023AD))
2901                         do_bond = false;
2902
2903                 /* require exactly 2 slaves */
2904                 if (bonding_info->master.num_slaves != 2)
2905                         do_bond = false;
2906
2907                 /* calc v2p */
2908                 if (do_bond) {
2909                         if (bonding_info->master.bond_mode ==
2910                             BOND_MODE_ACTIVEBACKUP) {
2911                                 /* in active-backup mode virtual ports are
2912                                  * mapped to the physical port of the active
2913                                  * slave */
2914                                 if (bonding_info->slave.state ==
2915                                     BOND_STATE_BACKUP) {
2916                                         if (port == 1) {
2917                                                 v2p_port1 = 2;
2918                                                 v2p_port2 = 2;
2919                                         } else {
2920                                                 v2p_port1 = 1;
2921                                                 v2p_port2 = 1;
2922                                         }
2923                                 } else { /* BOND_STATE_ACTIVE */
2924                                         if (port == 1) {
2925                                                 v2p_port1 = 1;
2926                                                 v2p_port2 = 1;
2927                                         } else {
2928                                                 v2p_port1 = 2;
2929                                                 v2p_port2 = 2;
2930                                         }
2931                                 }
2932                         } else { /* Active-Active */
2933                                 /* in active-active mode a virtual port is
2934                                  * mapped to the native physical port if and only
2935                                  * if the physical port is up */
2936                                 __s8 link = bonding_info->slave.link;
2937
2938                                 if (port == 1)
2939                                         v2p_port2 = 2;
2940                                 else
2941                                         v2p_port1 = 1;
2942                                 if ((link == BOND_LINK_UP) ||
2943                                     (link == BOND_LINK_FAIL)) {
2944                                         if (port == 1)
2945                                                 v2p_port1 = 1;
2946                                         else
2947                                                 v2p_port2 = 2;
2948                                 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
2949                                         if (port == 1)
2950                                                 v2p_port1 = 2;
2951                                         else
2952                                                 v2p_port2 = 1;
2953                                 }
2954                         }
2955                 }
2956         }
2957
2958         mlx4_en_queue_bond_work(priv, do_bond,
2959                                 v2p_port1, v2p_port2);
2960
2961         return NOTIFY_DONE;
2962 }
2963
2964 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
2965                                      struct mlx4_en_stats_bitmap *stats_bitmap,
2966                                      u8 rx_ppp, u8 rx_pause,
2967                                      u8 tx_ppp, u8 tx_pause)
2968 {
2969         int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS;
2970
2971         if (!mlx4_is_slave(dev) &&
2972             (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
2973                 mutex_lock(&stats_bitmap->mutex);
2974                 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS);
2975
2976                 if (rx_ppp)
2977                         bitmap_set(stats_bitmap->bitmap, last_i,
2978                                    NUM_FLOW_PRIORITY_STATS_RX);
2979                 last_i += NUM_FLOW_PRIORITY_STATS_RX;
2980
2981                 if (rx_pause && !(rx_ppp))
2982                         bitmap_set(stats_bitmap->bitmap, last_i,
2983                                    NUM_FLOW_STATS_RX);
2984                 last_i += NUM_FLOW_STATS_RX;
2985
2986                 if (tx_ppp)
2987                         bitmap_set(stats_bitmap->bitmap, last_i,
2988                                    NUM_FLOW_PRIORITY_STATS_TX);
2989                 last_i += NUM_FLOW_PRIORITY_STATS_TX;
2990
2991                 if (tx_pause && !(tx_ppp))
2992                         bitmap_set(stats_bitmap->bitmap, last_i,
2993                                    NUM_FLOW_STATS_TX);
2994                 last_i += NUM_FLOW_STATS_TX;
2995
2996                 mutex_unlock(&stats_bitmap->mutex);
2997         }
2998 }
2999
3000 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
3001                               struct mlx4_en_stats_bitmap *stats_bitmap,
3002                               u8 rx_ppp, u8 rx_pause,
3003                               u8 tx_ppp, u8 tx_pause)
3004 {
3005         int last_i = 0;
3006
3007         mutex_init(&stats_bitmap->mutex);
3008         bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS);
3009
3010         if (mlx4_is_slave(dev)) {
3011                 bitmap_set(stats_bitmap->bitmap, last_i +
3012                                          MLX4_FIND_NETDEV_STAT(rx_packets), 1);
3013                 bitmap_set(stats_bitmap->bitmap, last_i +
3014                                          MLX4_FIND_NETDEV_STAT(tx_packets), 1);
3015                 bitmap_set(stats_bitmap->bitmap, last_i +
3016                                          MLX4_FIND_NETDEV_STAT(rx_bytes), 1);
3017                 bitmap_set(stats_bitmap->bitmap, last_i +
3018                                          MLX4_FIND_NETDEV_STAT(tx_bytes), 1);
3019                 bitmap_set(stats_bitmap->bitmap, last_i +
3020                                          MLX4_FIND_NETDEV_STAT(rx_dropped), 1);
3021                 bitmap_set(stats_bitmap->bitmap, last_i +
3022                                          MLX4_FIND_NETDEV_STAT(tx_dropped), 1);
3023         } else {
3024                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS);
3025         }
3026         last_i += NUM_MAIN_STATS;
3027
3028         bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS);
3029         last_i += NUM_PORT_STATS;
3030
3031         if (mlx4_is_master(dev))
3032                 bitmap_set(stats_bitmap->bitmap, last_i,
3033                            NUM_PF_STATS);
3034         last_i += NUM_PF_STATS;
3035
3036         mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
3037                                         rx_ppp, rx_pause,
3038                                         tx_ppp, tx_pause);
3039         last_i += NUM_FLOW_STATS;
3040
3041         if (!mlx4_is_slave(dev))
3042                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS);
3043 }
3044
3045 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
3046                         struct mlx4_en_port_profile *prof)
3047 {
3048         struct net_device *dev;
3049         struct mlx4_en_priv *priv;
3050         int i;
3051         int err;
3052
3053         dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
3054                                  MAX_TX_RINGS, MAX_RX_RINGS);
3055         if (dev == NULL)
3056                 return -ENOMEM;
3057
3058         netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
3059         netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
3060
3061         SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev);
3062         dev->dev_port = port - 1;
3063
3064         /*
3065          * Initialize driver private data
3066          */
3067
3068         priv = netdev_priv(dev);
3069         memset(priv, 0, sizeof(struct mlx4_en_priv));
3070         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
3071         spin_lock_init(&priv->stats_lock);
3072         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
3073         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
3074         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
3075         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
3076         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
3077         INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads);
3078         INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads);
3079 #ifdef CONFIG_RFS_ACCEL
3080         INIT_LIST_HEAD(&priv->filters);
3081         spin_lock_init(&priv->filters_lock);
3082 #endif
3083
3084         priv->dev = dev;
3085         priv->mdev = mdev;
3086         priv->ddev = &mdev->pdev->dev;
3087         priv->prof = prof;
3088         priv->port = port;
3089         priv->port_up = false;
3090         priv->flags = prof->flags;
3091         priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
3092         priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
3093                         MLX4_WQE_CTRL_SOLICITED);
3094         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
3095         priv->tx_ring_num = prof->tx_ring_num;
3096         priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
3097         netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
3098
3099         priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
3100                                 GFP_KERNEL);
3101         if (!priv->tx_ring) {
3102                 err = -ENOMEM;
3103                 goto out;
3104         }
3105         priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
3106                               GFP_KERNEL);
3107         if (!priv->tx_cq) {
3108                 err = -ENOMEM;
3109                 goto out;
3110         }
3111         priv->rx_ring_num = prof->rx_ring_num;
3112         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
3113         priv->cqe_size = mdev->dev->caps.cqe_size;
3114         priv->mac_index = -1;
3115         priv->msg_enable = MLX4_EN_MSG_LEVEL;
3116 #ifdef CONFIG_MLX4_EN_DCB
3117         if (!mlx4_is_slave(priv->mdev->dev)) {
3118                 priv->dcbx_cap = DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_HOST |
3119                         DCB_CAP_DCBX_VER_IEEE;
3120                 priv->flags |= MLX4_EN_DCB_ENABLED;
3121                 priv->cee_config.pfc_state = false;
3122
3123                 for (i = 0; i < MLX4_EN_NUM_UP; i++)
3124                         priv->cee_config.dcb_pfc[i] = pfc_disabled;
3125
3126                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
3127                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
3128                 } else {
3129                         en_info(priv, "enabling only PFC DCB ops\n");
3130                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
3131                 }
3132         }
3133 #endif
3134
3135         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
3136                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
3137
3138         /* Query for default mac and max mtu */
3139         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
3140
3141         if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
3142             MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
3143                 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
3144
3145         /* Set default MAC */
3146         dev->addr_len = ETH_ALEN;
3147         mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
3148         if (!is_valid_ether_addr(dev->dev_addr)) {
3149                 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
3150                        priv->port, dev->dev_addr);
3151                 err = -EINVAL;
3152                 goto out;
3153         } else if (mlx4_is_slave(priv->mdev->dev) &&
3154                    (priv->mdev->dev->port_random_macs & 1 << priv->port)) {
3155                 /* Random MAC was assigned in mlx4_slave_cap
3156                  * in mlx4_core module
3157                  */
3158                 dev->addr_assign_type |= NET_ADDR_RANDOM;
3159                 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
3160         }
3161
3162         memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
3163
3164         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
3165                                           DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
3166         err = mlx4_en_alloc_resources(priv);
3167         if (err)
3168                 goto out;
3169
3170         /* Initialize time stamping config */
3171         priv->hwtstamp_config.flags = 0;
3172         priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
3173         priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
3174
3175         /* Allocate page for receive rings */
3176         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
3177                                 MLX4_EN_PAGE_SIZE);
3178         if (err) {
3179                 en_err(priv, "Failed to allocate page for rx qps\n");
3180                 goto out;
3181         }
3182         priv->allocated = 1;
3183
3184         /*
3185          * Initialize netdev entry points
3186          */
3187         if (mlx4_is_master(priv->mdev->dev))
3188                 dev->netdev_ops = &mlx4_netdev_ops_master;
3189         else
3190                 dev->netdev_ops = &mlx4_netdev_ops;
3191         dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
3192         netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
3193         netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
3194
3195         dev->ethtool_ops = &mlx4_en_ethtool_ops;
3196
3197         /*
3198          * Set driver features
3199          */
3200         dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
3201         if (mdev->LSO_support)
3202                 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
3203
3204         dev->vlan_features = dev->hw_features;
3205
3206         dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
3207         dev->features = dev->hw_features | NETIF_F_HIGHDMA |
3208                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
3209                         NETIF_F_HW_VLAN_CTAG_FILTER;
3210         dev->hw_features |= NETIF_F_LOOPBACK |
3211                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
3212
3213         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) {
3214                 dev->features |= NETIF_F_HW_VLAN_STAG_RX |
3215                         NETIF_F_HW_VLAN_STAG_FILTER;
3216                 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX;
3217         }
3218
3219         if (mlx4_is_slave(mdev->dev)) {
3220                 int phv;
3221
3222                 err = get_phv_bit(mdev->dev, port, &phv);
3223                 if (!err && phv) {
3224                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3225                         priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
3226                 }
3227         } else {
3228                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN &&
3229                     !(mdev->dev->caps.flags2 &
3230                       MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
3231                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3232         }
3233
3234         if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
3235                 dev->hw_features |= NETIF_F_RXFCS;
3236
3237         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
3238                 dev->hw_features |= NETIF_F_RXALL;
3239
3240         if (mdev->dev->caps.steering_mode ==
3241             MLX4_STEERING_MODE_DEVICE_MANAGED &&
3242             mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
3243                 dev->hw_features |= NETIF_F_NTUPLE;
3244
3245         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
3246                 dev->priv_flags |= IFF_UNICAST_FLT;
3247
3248         /* Setting a default hash function value */
3249         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
3250                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3251         } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
3252                 priv->rss_hash_fn = ETH_RSS_HASH_XOR;
3253         } else {
3254                 en_warn(priv,
3255                         "No RSS hash capabilities exposed, using Toeplitz\n");
3256                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3257         }
3258
3259         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3260                 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
3261                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3262                                     NETIF_F_GSO_PARTIAL;
3263                 dev->features    |= NETIF_F_GSO_UDP_TUNNEL |
3264                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3265                                     NETIF_F_GSO_PARTIAL;
3266                 dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
3267         }
3268
3269         mdev->pndev[port] = dev;
3270         mdev->upper[port] = NULL;
3271
3272         netif_carrier_off(dev);
3273         mlx4_en_set_default_moderation(priv);
3274
3275         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
3276         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
3277
3278         mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
3279
3280         /* Configure port */
3281         mlx4_en_calc_rx_buf(dev);
3282         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
3283                                     priv->rx_skb_size + ETH_FCS_LEN,
3284                                     prof->tx_pause, prof->tx_ppp,
3285                                     prof->rx_pause, prof->rx_ppp);
3286         if (err) {
3287                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
3288                        priv->port, err);
3289                 goto out;
3290         }
3291
3292         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3293                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
3294                 if (err) {
3295                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
3296                                err);
3297                         goto out;
3298                 }
3299         }
3300
3301         /* Init port */
3302         en_warn(priv, "Initializing port\n");
3303         err = mlx4_INIT_PORT(mdev->dev, priv->port);
3304         if (err) {
3305                 en_err(priv, "Failed Initializing port\n");
3306                 goto out;
3307         }
3308         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
3309
3310         /* Initialize time stamp mechanism */
3311         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
3312                 mlx4_en_init_timestamp(mdev);
3313
3314         queue_delayed_work(mdev->workqueue, &priv->service_task,
3315                            SERVICE_TASK_DELAY);
3316
3317         mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap,
3318                                  mdev->profile.prof[priv->port].rx_ppp,
3319                                  mdev->profile.prof[priv->port].rx_pause,
3320                                  mdev->profile.prof[priv->port].tx_ppp,
3321                                  mdev->profile.prof[priv->port].tx_pause);
3322
3323         err = register_netdev(dev);
3324         if (err) {
3325                 en_err(priv, "Netdev registration failed for port %d\n", port);
3326                 goto out;
3327         }
3328
3329         priv->registered = 1;
3330         devlink_port_type_eth_set(mlx4_get_devlink_port(mdev->dev, priv->port),
3331                                   dev);
3332
3333         return 0;
3334
3335 out:
3336         mlx4_en_destroy_netdev(dev);
3337         return err;
3338 }
3339
3340 int mlx4_en_reset_config(struct net_device *dev,
3341                          struct hwtstamp_config ts_config,
3342                          netdev_features_t features)
3343 {
3344         struct mlx4_en_priv *priv = netdev_priv(dev);
3345         struct mlx4_en_dev *mdev = priv->mdev;
3346         struct mlx4_en_port_profile new_prof;
3347         struct mlx4_en_priv *tmp;
3348         int port_up = 0;
3349         int err = 0;
3350
3351         if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
3352             priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
3353             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3354             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
3355                 return 0; /* Nothing to change */
3356
3357         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3358             (features & NETIF_F_HW_VLAN_CTAG_RX) &&
3359             (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
3360                 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
3361                 return -EINVAL;
3362         }
3363
3364         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
3365         if (!tmp)
3366                 return -ENOMEM;
3367
3368         mutex_lock(&mdev->state_lock);
3369
3370         memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
3371         memcpy(&new_prof.hwtstamp_config, &ts_config, sizeof(ts_config));
3372
3373         err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof);
3374         if (err)
3375                 goto out;
3376
3377         if (priv->port_up) {
3378                 port_up = 1;
3379                 mlx4_en_stop_port(dev, 1);
3380         }
3381
3382         en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n",
3383                 ts_config.rx_filter,
3384                 !!(features & NETIF_F_HW_VLAN_CTAG_RX));
3385
3386         mlx4_en_safe_replace_resources(priv, tmp);
3387
3388         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
3389                 if (features & NETIF_F_HW_VLAN_CTAG_RX)
3390                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3391                 else
3392                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3393         } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
3394                 /* RX time-stamping is OFF, update the RX vlan offload
3395                  * to the latest wanted state
3396                  */
3397                 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
3398                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3399                 else
3400                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3401         }
3402
3403         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
3404                 if (features & NETIF_F_RXFCS)
3405                         dev->features |= NETIF_F_RXFCS;
3406                 else
3407                         dev->features &= ~NETIF_F_RXFCS;
3408         }
3409
3410         /* RX vlan offload and RX time-stamping can't co-exist !
3411          * Regardless of the caller's choice,
3412          * Turn Off RX vlan offload in case of time-stamping is ON
3413          */
3414         if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
3415                 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
3416                         en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
3417                 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3418         }
3419
3420         if (port_up) {
3421                 err = mlx4_en_start_port(dev);
3422                 if (err)
3423                         en_err(priv, "Failed starting port\n");
3424         }
3425
3426 out:
3427         mutex_unlock(&mdev->state_lock);
3428         kfree(tmp);
3429         if (!err)
3430                 netdev_features_change(dev);
3431         return err;
3432 }