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/etherdevice.h>
  35 #include <linux/tcp.h>
  36 #include <linux/if_vlan.h>
  37 #include <linux/delay.h>
  38 #include <linux/slab.h>
  39 #include <linux/hash.h>
  40 #include <net/ip.h>
  41 #include <net/busy_poll.h>
  42 #include <net/vxlan.h>
  43
  44 #include <linux/mlx4/driver.h>
  45 #include <linux/mlx4/device.h>
  46 #include <linux/mlx4/cmd.h>
  47 #include <linux/mlx4/cq.h>
  48
  49 #include "mlx4_en.h"
  50 #include "en_port.h"
  51
  52 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
  53 {
  54         struct mlx4_en_priv *priv = netdev_priv(dev);
  55         int i;
  56         unsigned int offset = 0;
  57
  58         if (up && up != MLX4_EN_NUM_UP)
  59                 return -EINVAL;
  60
  61         netdev_set_num_tc(dev, up);
  62
  63         /* Partition Tx queues evenly amongst UP's */
  64         for (i = 0; i < up; i++) {
  65                 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
  66                 offset += priv->num_tx_rings_p_up;
  67         }
  68
  69         return 0;
  70 }
  71
  72 #ifdef CONFIG_NET_RX_BUSY_POLL
  73 /* must be called with local_bh_disable()d */
  74 static int mlx4_en_low_latency_recv(struct napi_struct *napi)
  75 {
  76         struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
  77         struct net_device *dev = cq->dev;
  78         struct mlx4_en_priv *priv = netdev_priv(dev);
  79         struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring];
  80         int done;
  81
  82         if (!priv->port_up)
  83                 return LL_FLUSH_FAILED;
  84
  85         if (!mlx4_en_cq_lock_poll(cq))
  86                 return LL_FLUSH_BUSY;
  87
  88         done = mlx4_en_process_rx_cq(dev, cq, 4);
  89         if (likely(done))
  90                 rx_ring->cleaned += done;
  91         else
  92                 rx_ring->misses++;
  93
  94         mlx4_en_cq_unlock_poll(cq);
  95
  96         return done;
  97 }
  98 #endif  /* CONFIG_NET_RX_BUSY_POLL */
  99
 100 #ifdef CONFIG_RFS_ACCEL
 101
 102 struct mlx4_en_filter {
 103         struct list_head next;
 104         struct work_struct work;
 105
 106         u8     ip_proto;
 107         __be32 src_ip;
 108         __be32 dst_ip;
 109         __be16 src_port;
 110         __be16 dst_port;
 111
 112         int rxq_index;
 113         struct mlx4_en_priv *priv;
 114         u32 flow_id;                    /* RFS infrastructure id */
 115         int id;                         /* mlx4_en driver id */
 116         u64 reg_id;                     /* Flow steering API id */
 117         u8 activated;                   /* Used to prevent expiry before filter
 118                                          * is attached
 119                                          */
 120         struct hlist_node filter_chain;
 121 };
 122
 123 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 124
 125 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 126 {
 127         switch (ip_proto) {
 128         case IPPROTO_UDP:
 129                 return MLX4_NET_TRANS_RULE_ID_UDP;
 130         case IPPROTO_TCP:
 131                 return MLX4_NET_TRANS_RULE_ID_TCP;
 132         default:
 133                 return MLX4_NET_TRANS_RULE_NUM;
 134         }
 135 };
 136
 137 static void mlx4_en_filter_work(struct work_struct *work)
 138 {
 139         struct mlx4_en_filter *filter = container_of(work,
 140                                                      struct mlx4_en_filter,
 141                                                      work);
 142         struct mlx4_en_priv *priv = filter->priv;
 143         struct mlx4_spec_list spec_tcp_udp = {
 144                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 145                 {
 146                         .tcp_udp = {
 147                                 .dst_port = filter->dst_port,
 148                                 .dst_port_msk = (__force __be16)-1,
 149                                 .src_port = filter->src_port,
 150                                 .src_port_msk = (__force __be16)-1,
 151                         },
 152                 },
 153         };
 154         struct mlx4_spec_list spec_ip = {
 155                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 156                 {
 157                         .ipv4 = {
 158                                 .dst_ip = filter->dst_ip,
 159                                 .dst_ip_msk = (__force __be32)-1,
 160                                 .src_ip = filter->src_ip,
 161                                 .src_ip_msk = (__force __be32)-1,
 162                         },
 163                 },
 164         };
 165         struct mlx4_spec_list spec_eth = {
 166                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 167         };
 168         struct mlx4_net_trans_rule rule = {
 169                 .list = LIST_HEAD_INIT(rule.list),
 170                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 171                 .exclusive = 1,
 172                 .allow_loopback = 1,
 173                 .promisc_mode = MLX4_FS_REGULAR,
 174                 .port = priv->port,
 175                 .priority = MLX4_DOMAIN_RFS,
 176         };
 177         int rc;
 178         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 179
 180         if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
 181                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 182                         filter->ip_proto);
 183                 goto ignore;
 184         }
 185         list_add_tail(&spec_eth.list, &rule.list);
 186         list_add_tail(&spec_ip.list, &rule.list);
 187         list_add_tail(&spec_tcp_udp.list, &rule.list);
 188
 189         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 190         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 191         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 192
 193         filter->activated = 0;
 194
 195         if (filter->reg_id) {
 196                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 197                 if (rc && rc != -ENOENT)
 198                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 199         }
 200
 201         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 202         if (rc)
 203                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 204
 205 ignore:
 206         mlx4_en_filter_rfs_expire(priv);
 207
 208         filter->activated = 1;
 209 }
 210
 211 static inline struct hlist_head *
 212 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 213                    __be16 src_port, __be16 dst_port)
 214 {
 215         unsigned long l;
 216         int bucket_idx;
 217
 218         l = (__force unsigned long)src_port |
 219             ((__force unsigned long)dst_port << 2);
 220         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 221
 222         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 223
 224         return &priv->filter_hash[bucket_idx];
 225 }
 226
 227 static struct mlx4_en_filter *
 228 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 229                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 230                      __be16 dst_port, u32 flow_id)
 231 {
 232         struct mlx4_en_filter *filter = NULL;
 233
 234         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 235         if (!filter)
 236                 return NULL;
 237
 238         filter->priv = priv;
 239         filter->rxq_index = rxq_index;
 240         INIT_WORK(&filter->work, mlx4_en_filter_work);
 241
 242         filter->src_ip = src_ip;
 243         filter->dst_ip = dst_ip;
 244         filter->ip_proto = ip_proto;
 245         filter->src_port = src_port;
 246         filter->dst_port = dst_port;
 247
 248         filter->flow_id = flow_id;
 249
 250         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 251
 252         list_add_tail(&filter->next, &priv->filters);
 253         hlist_add_head(&filter->filter_chain,
 254                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 255                                           dst_port));
 256
 257         return filter;
 258 }
 259
 260 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 261 {
 262         struct mlx4_en_priv *priv = filter->priv;
 263         int rc;
 264
 265         list_del(&filter->next);
 266
 267         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 268         if (rc && rc != -ENOENT)
 269                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 270
 271         kfree(filter);
 272 }
 273
 274 static inline struct mlx4_en_filter *
 275 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 276                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 277 {
 278         struct mlx4_en_filter *filter;
 279         struct mlx4_en_filter *ret = NULL;
 280
 281         hlist_for_each_entry(filter,
 282                              filter_hash_bucket(priv, src_ip, dst_ip,
 283                                                 src_port, dst_port),
 284                              filter_chain) {
 285                 if (filter->src_ip == src_ip &&
 286                     filter->dst_ip == dst_ip &&
 287                     filter->ip_proto == ip_proto &&
 288                     filter->src_port == src_port &&
 289                     filter->dst_port == dst_port) {
 290                         ret = filter;
 291                         break;
 292                 }
 293         }
 294
 295         return ret;
 296 }
 297
 298 static int
 299 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 300                    u16 rxq_index, u32 flow_id)
 301 {
 302         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 303         struct mlx4_en_filter *filter;
 304         const struct iphdr *ip;
 305         const __be16 *ports;
 306         u8 ip_proto;
 307         __be32 src_ip;
 308         __be32 dst_ip;
 309         __be16 src_port;
 310         __be16 dst_port;
 311         int nhoff = skb_network_offset(skb);
 312         int ret = 0;
 313
 314         if (skb->encapsulation)
 315                 return -EPROTONOSUPPORT;
 316
 317         if (skb->protocol != htons(ETH_P_IP))
 318                 return -EPROTONOSUPPORT;
 319
 320         ip = (const struct iphdr *)(skb->data + nhoff);
 321         if (ip_is_fragment(ip))
 322                 return -EPROTONOSUPPORT;
 323
 324         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 325                 return -EPROTONOSUPPORT;
 326         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 327
 328         ip_proto = ip->protocol;
 329         src_ip = ip->saddr;
 330         dst_ip = ip->daddr;
 331         src_port = ports[0];
 332         dst_port = ports[1];
 333
 334         spin_lock_bh(&priv->filters_lock);
 335         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 336                                      src_port, dst_port);
 337         if (filter) {
 338                 if (filter->rxq_index == rxq_index)
 339                         goto out;
 340
 341                 filter->rxq_index = rxq_index;
 342         } else {
 343                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 344                                               src_ip, dst_ip, ip_proto,
 345                                               src_port, dst_port, flow_id);
 346                 if (!filter) {
 347                         ret = -ENOMEM;
 348                         goto err;
 349                 }
 350         }
 351
 352         queue_work(priv->mdev->workqueue, &filter->work);
 353
 354 out:
 355         ret = filter->id;
 356 err:
 357         spin_unlock_bh(&priv->filters_lock);
 358
 359         return ret;
 360 }
 361
 362 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 363 {
 364         struct mlx4_en_filter *filter, *tmp;
 365         LIST_HEAD(del_list);
 366
 367         spin_lock_bh(&priv->filters_lock);
 368         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 369                 list_move(&filter->next, &del_list);
 370                 hlist_del(&filter->filter_chain);
 371         }
 372         spin_unlock_bh(&priv->filters_lock);
 373
 374         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 375                 cancel_work_sync(&filter->work);
 376                 mlx4_en_filter_free(filter);
 377         }
 378 }
 379
 380 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 381 {
 382         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 383         LIST_HEAD(del_list);
 384         int i = 0;
 385
 386         spin_lock_bh(&priv->filters_lock);
 387         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 388                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 389                         break;
 390
 391                 if (filter->activated &&
 392                     !work_pending(&filter->work) &&
 393                     rps_may_expire_flow(priv->dev,
 394                                         filter->rxq_index, filter->flow_id,
 395                                         filter->id)) {
 396                         list_move(&filter->next, &del_list);
 397                         hlist_del(&filter->filter_chain);
 398                 } else
 399                         last_filter = filter;
 400
 401                 i++;
 402         }
 403
 404         if (last_filter && (&last_filter->next != priv->filters.next))
 405                 list_move(&priv->filters, &last_filter->next);
 406
 407         spin_unlock_bh(&priv->filters_lock);
 408
 409         list_for_each_entry_safe(filter, tmp, &del_list, next)
 410                 mlx4_en_filter_free(filter);
 411 }
 412 #endif
 413
 414 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
 415                                    __be16 proto, u16 vid)
 416 {
 417         struct mlx4_en_priv *priv = netdev_priv(dev);
 418         struct mlx4_en_dev *mdev = priv->mdev;
 419         int err;
 420         int idx;
 421
 422         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 423
 424         set_bit(vid, priv->active_vlans);
 425
 426         /* Add VID to port VLAN filter */
 427         mutex_lock(&mdev->state_lock);
 428         if (mdev->device_up && priv->port_up) {
 429                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 430                 if (err) {
 431                         en_err(priv, "Failed configuring VLAN filter\n");
 432                         goto out;
 433                 }
 434         }
 435         err = mlx4_register_vlan(mdev->dev, priv->port, vid, &idx);
 436         if (err)
 437                 en_dbg(HW, priv, "Failed adding vlan %d\n", vid);
 438
 439 out:
 440         mutex_unlock(&mdev->state_lock);
 441         return err;
 442 }
 443
 444 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
 445                                     __be16 proto, u16 vid)
 446 {
 447         struct mlx4_en_priv *priv = netdev_priv(dev);
 448         struct mlx4_en_dev *mdev = priv->mdev;
 449         int err = 0;
 450
 451         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 452
 453         clear_bit(vid, priv->active_vlans);
 454
 455         /* Remove VID from port VLAN filter */
 456         mutex_lock(&mdev->state_lock);
 457         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 458
 459         if (mdev->device_up && priv->port_up) {
 460                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 461                 if (err)
 462                         en_err(priv, "Failed configuring VLAN filter\n");
 463         }
 464         mutex_unlock(&mdev->state_lock);
 465
 466         return err;
 467 }
 468
 469 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
 470 {
 471         int i;
 472         for (i = ETH_ALEN - 1; i >= 0; --i) {
 473                 dst_mac[i] = src_mac & 0xff;
 474                 src_mac >>= 8;
 475         }
 476         memset(&dst_mac[ETH_ALEN], 0, 2);
 477 }
 478
 479
 480 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
 481                                     int qpn, u64 *reg_id)
 482 {
 483         int err;
 484
 485         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
 486             priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
 487                 return 0; /* do nothing */
 488
 489         err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
 490                                     MLX4_DOMAIN_NIC, reg_id);
 491         if (err) {
 492                 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 493                 return err;
 494         }
 495         en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
 496         return 0;
 497 }
 498
 499
 500 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 501                                 unsigned char *mac, int *qpn, u64 *reg_id)
 502 {
 503         struct mlx4_en_dev *mdev = priv->mdev;
 504         struct mlx4_dev *dev = mdev->dev;
 505         int err;
 506
 507         switch (dev->caps.steering_mode) {
 508         case MLX4_STEERING_MODE_B0: {
 509                 struct mlx4_qp qp;
 510                 u8 gid[16] = {0};
 511
 512                 qp.qpn = *qpn;
 513                 memcpy(&gid[10], mac, ETH_ALEN);
 514                 gid[5] = priv->port;
 515
 516                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 517                 break;
 518         }
 519         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 520                 struct mlx4_spec_list spec_eth = { {NULL} };
 521                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 522
 523                 struct mlx4_net_trans_rule rule = {
 524                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 525                         .exclusive = 0,
 526                         .allow_loopback = 1,
 527                         .promisc_mode = MLX4_FS_REGULAR,
 528                         .priority = MLX4_DOMAIN_NIC,
 529                 };
 530
 531                 rule.port = priv->port;
 532                 rule.qpn = *qpn;
 533                 INIT_LIST_HEAD(&rule.list);
 534
 535                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 536                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 537                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 538                 list_add_tail(&spec_eth.list, &rule.list);
 539
 540                 err = mlx4_flow_attach(dev, &rule, reg_id);
 541                 break;
 542         }
 543         default:
 544                 return -EINVAL;
 545         }
 546         if (err)
 547                 en_warn(priv, "Failed Attaching Unicast\n");
 548
 549         return err;
 550 }
 551
 552 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 553                                      unsigned char *mac, int qpn, u64 reg_id)
 554 {
 555         struct mlx4_en_dev *mdev = priv->mdev;
 556         struct mlx4_dev *dev = mdev->dev;
 557
 558         switch (dev->caps.steering_mode) {
 559         case MLX4_STEERING_MODE_B0: {
 560                 struct mlx4_qp qp;
 561                 u8 gid[16] = {0};
 562
 563                 qp.qpn = qpn;
 564                 memcpy(&gid[10], mac, ETH_ALEN);
 565                 gid[5] = priv->port;
 566
 567                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 568                 break;
 569         }
 570         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 571                 mlx4_flow_detach(dev, reg_id);
 572                 break;
 573         }
 574         default:
 575                 en_err(priv, "Invalid steering mode.\n");
 576         }
 577 }
 578
 579 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 580 {
 581         struct mlx4_en_dev *mdev = priv->mdev;
 582         struct mlx4_dev *dev = mdev->dev;
 583         int index = 0;
 584         int err = 0;
 585         int *qpn = &priv->base_qpn;
 586         u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 587
 588         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 589                priv->dev->dev_addr);
 590         index = mlx4_register_mac(dev, priv->port, mac);
 591         if (index < 0) {
 592                 err = index;
 593                 en_err(priv, "Failed adding MAC: %pM\n",
 594                        priv->dev->dev_addr);
 595                 return err;
 596         }
 597
 598         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 599                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 600                 *qpn = base_qpn + index;
 601                 return 0;
 602         }
 603
 604         err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP);
 605         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 606         if (err) {
 607                 en_err(priv, "Failed to reserve qp for mac registration\n");
 608                 mlx4_unregister_mac(dev, priv->port, mac);
 609                 return err;
 610         }
 611
 612         return 0;
 613 }
 614
 615 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 616 {
 617         struct mlx4_en_dev *mdev = priv->mdev;
 618         struct mlx4_dev *dev = mdev->dev;
 619         int qpn = priv->base_qpn;
 620
 621         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 622                 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 623                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 624                        priv->dev->dev_addr);
 625                 mlx4_unregister_mac(dev, priv->port, mac);
 626         } else {
 627                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 628                        priv->port, qpn);
 629                 mlx4_qp_release_range(dev, qpn, 1);
 630                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 631         }
 632 }
 633
 634 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
 635                                unsigned char *new_mac, unsigned char *prev_mac)
 636 {
 637         struct mlx4_en_dev *mdev = priv->mdev;
 638         struct mlx4_dev *dev = mdev->dev;
 639         int err = 0;
 640         u64 new_mac_u64 = mlx4_mac_to_u64(new_mac);
 641
 642         if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
 643                 struct hlist_head *bucket;
 644                 unsigned int mac_hash;
 645                 struct mlx4_mac_entry *entry;
 646                 struct hlist_node *tmp;
 647                 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac);
 648
 649                 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
 650                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 651                         if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
 652                                 mlx4_en_uc_steer_release(priv, entry->mac,
 653                                                          qpn, entry->reg_id);
 654                                 mlx4_unregister_mac(dev, priv->port,
 655                                                     prev_mac_u64);
 656                                 hlist_del_rcu(&entry->hlist);
 657                                 synchronize_rcu();
 658                                 memcpy(entry->mac, new_mac, ETH_ALEN);
 659                                 entry->reg_id = 0;
 660                                 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
 661                                 hlist_add_head_rcu(&entry->hlist,
 662                                                    &priv->mac_hash[mac_hash]);
 663                                 mlx4_register_mac(dev, priv->port, new_mac_u64);
 664                                 err = mlx4_en_uc_steer_add(priv, new_mac,
 665                                                            &qpn,
 666                                                            &entry->reg_id);
 667                                 if (err)
 668                                         return err;
 669                                 if (priv->tunnel_reg_id) {
 670                                         mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 671                                         priv->tunnel_reg_id = 0;
 672                                 }
 673                                 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
 674                                                                &priv->tunnel_reg_id);
 675                                 return err;
 676                         }
 677                 }
 678                 return -EINVAL;
 679         }
 680
 681         return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
 682 }
 683
 684 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
 685                               unsigned char new_mac[ETH_ALEN + 2])
 686 {
 687         int err = 0;
 688
 689         if (priv->port_up) {
 690                 /* Remove old MAC and insert the new one */
 691                 err = mlx4_en_replace_mac(priv, priv->base_qpn,
 692                                           new_mac, priv->current_mac);
 693                 if (err)
 694                         en_err(priv, "Failed changing HW MAC address\n");
 695         } else
 696                 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 697
 698         if (!err)
 699                 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
 700
 701         return err;
 702 }
 703
 704 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 705 {
 706         struct mlx4_en_priv *priv = netdev_priv(dev);
 707         struct mlx4_en_dev *mdev = priv->mdev;
 708         struct sockaddr *saddr = addr;
 709         unsigned char new_mac[ETH_ALEN + 2];
 710         int err;
 711
 712         if (!is_valid_ether_addr(saddr->sa_data))
 713                 return -EADDRNOTAVAIL;
 714
 715         mutex_lock(&mdev->state_lock);
 716         memcpy(new_mac, saddr->sa_data, ETH_ALEN);
 717         err = mlx4_en_do_set_mac(priv, new_mac);
 718         if (!err)
 719                 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
 720         mutex_unlock(&mdev->state_lock);
 721
 722         return err;
 723 }
 724
 725 static void mlx4_en_clear_list(struct net_device *dev)
 726 {
 727         struct mlx4_en_priv *priv = netdev_priv(dev);
 728         struct mlx4_en_mc_list *tmp, *mc_to_del;
 729
 730         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 731                 list_del(&mc_to_del->list);
 732                 kfree(mc_to_del);
 733         }
 734 }
 735
 736 static void mlx4_en_cache_mclist(struct net_device *dev)
 737 {
 738         struct mlx4_en_priv *priv = netdev_priv(dev);
 739         struct netdev_hw_addr *ha;
 740         struct mlx4_en_mc_list *tmp;
 741
 742         mlx4_en_clear_list(dev);
 743         netdev_for_each_mc_addr(ha, dev) {
 744                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 745                 if (!tmp) {
 746                         mlx4_en_clear_list(dev);
 747                         return;
 748                 }
 749                 memcpy(tmp->addr, ha->addr, ETH_ALEN);
 750                 list_add_tail(&tmp->list, &priv->mc_list);
 751         }
 752 }
 753
 754 static void update_mclist_flags(struct mlx4_en_priv *priv,
 755                                 struct list_head *dst,
 756                                 struct list_head *src)
 757 {
 758         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 759         bool found;
 760
 761         /* Find all the entries that should be removed from dst,
 762          * These are the entries that are not found in src
 763          */
 764         list_for_each_entry(dst_tmp, dst, list) {
 765                 found = false;
 766                 list_for_each_entry(src_tmp, src, list) {
 767                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 768                                 found = true;
 769                                 break;
 770                         }
 771                 }
 772                 if (!found)
 773                         dst_tmp->action = MCLIST_REM;
 774         }
 775
 776         /* Add entries that exist in src but not in dst
 777          * mark them as need to add
 778          */
 779         list_for_each_entry(src_tmp, src, list) {
 780                 found = false;
 781                 list_for_each_entry(dst_tmp, dst, list) {
 782                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 783                                 dst_tmp->action = MCLIST_NONE;
 784                                 found = true;
 785                                 break;
 786                         }
 787                 }
 788                 if (!found) {
 789                         new_mc = kmemdup(src_tmp,
 790                                          sizeof(struct mlx4_en_mc_list),
 791                                          GFP_KERNEL);
 792                         if (!new_mc)
 793                                 return;
 794
 795                         new_mc->action = MCLIST_ADD;
 796                         list_add_tail(&new_mc->list, dst);
 797                 }
 798         }
 799 }
 800
 801 static void mlx4_en_set_rx_mode(struct net_device *dev)
 802 {
 803         struct mlx4_en_priv *priv = netdev_priv(dev);
 804
 805         if (!priv->port_up)
 806                 return;
 807
 808         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 809 }
 810
 811 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 812                                      struct mlx4_en_dev *mdev)
 813 {
 814         int err = 0;
 815
 816         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 817                 if (netif_msg_rx_status(priv))
 818                         en_warn(priv, "Entering promiscuous mode\n");
 819                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 820
 821                 /* Enable promiscouos mode */
 822                 switch (mdev->dev->caps.steering_mode) {
 823                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 824                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 825                                                           priv->port,
 826                                                           priv->base_qpn,
 827                                                           MLX4_FS_ALL_DEFAULT);
 828                         if (err)
 829                                 en_err(priv, "Failed enabling promiscuous mode\n");
 830                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 831                         break;
 832
 833                 case MLX4_STEERING_MODE_B0:
 834                         err = mlx4_unicast_promisc_add(mdev->dev,
 835                                                        priv->base_qpn,
 836                                                        priv->port);
 837                         if (err)
 838                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 839
 840                         /* Add the default qp number as multicast
 841                          * promisc
 842                          */
 843                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 844                                 err = mlx4_multicast_promisc_add(mdev->dev,
 845                                                                  priv->base_qpn,
 846                                                                  priv->port);
 847                                 if (err)
 848                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 849                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 850                         }
 851                         break;
 852
 853                 case MLX4_STEERING_MODE_A0:
 854                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 855                                                      priv->port,
 856                                                      priv->base_qpn,
 857                                                      1);
 858                         if (err)
 859                                 en_err(priv, "Failed enabling promiscuous mode\n");
 860                         break;
 861                 }
 862
 863                 /* Disable port multicast filter (unconditionally) */
 864                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 865                                           0, MLX4_MCAST_DISABLE);
 866                 if (err)
 867                         en_err(priv, "Failed disabling multicast filter\n");
 868         }
 869 }
 870
 871 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 872                                        struct mlx4_en_dev *mdev)
 873 {
 874         int err = 0;
 875
 876         if (netif_msg_rx_status(priv))
 877                 en_warn(priv, "Leaving promiscuous mode\n");
 878         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 879
 880         /* Disable promiscouos mode */
 881         switch (mdev->dev->caps.steering_mode) {
 882         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 883                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 884                                                      priv->port,
 885                                                      MLX4_FS_ALL_DEFAULT);
 886                 if (err)
 887                         en_err(priv, "Failed disabling promiscuous mode\n");
 888                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 889                 break;
 890
 891         case MLX4_STEERING_MODE_B0:
 892                 err = mlx4_unicast_promisc_remove(mdev->dev,
 893                                                   priv->base_qpn,
 894                                                   priv->port);
 895                 if (err)
 896                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 897                 /* Disable Multicast promisc */
 898                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 899                         err = mlx4_multicast_promisc_remove(mdev->dev,
 900                                                             priv->base_qpn,
 901                                                             priv->port);
 902                         if (err)
 903                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 904                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 905                 }
 906                 break;
 907
 908         case MLX4_STEERING_MODE_A0:
 909                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 910                                              priv->port,
 911                                              priv->base_qpn, 0);
 912                 if (err)
 913                         en_err(priv, "Failed disabling promiscuous mode\n");
 914                 break;
 915         }
 916 }
 917
 918 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 919                                  struct net_device *dev,
 920                                  struct mlx4_en_dev *mdev)
 921 {
 922         struct mlx4_en_mc_list *mclist, *tmp;
 923         u64 mcast_addr = 0;
 924         u8 mc_list[16] = {0};
 925         int err = 0;
 926
 927         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 928         if (dev->flags & IFF_ALLMULTI) {
 929                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 930                                           0, MLX4_MCAST_DISABLE);
 931                 if (err)
 932                         en_err(priv, "Failed disabling multicast filter\n");
 933
 934                 /* Add the default qp number as multicast promisc */
 935                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 936                         switch (mdev->dev->caps.steering_mode) {
 937                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 938                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
 939                                                                   priv->port,
 940                                                                   priv->base_qpn,
 941                                                                   MLX4_FS_MC_DEFAULT);
 942                                 break;
 943
 944                         case MLX4_STEERING_MODE_B0:
 945                                 err = mlx4_multicast_promisc_add(mdev->dev,
 946                                                                  priv->base_qpn,
 947                                                                  priv->port);
 948                                 break;
 949
 950                         case MLX4_STEERING_MODE_A0:
 951                                 break;
 952                         }
 953                         if (err)
 954                                 en_err(priv, "Failed entering multicast promisc mode\n");
 955                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 956                 }
 957         } else {
 958                 /* Disable Multicast promisc */
 959                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 960                         switch (mdev->dev->caps.steering_mode) {
 961                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 962                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 963                                                                      priv->port,
 964                                                                      MLX4_FS_MC_DEFAULT);
 965                                 break;
 966
 967                         case MLX4_STEERING_MODE_B0:
 968                                 err = mlx4_multicast_promisc_remove(mdev->dev,
 969                                                                     priv->base_qpn,
 970                                                                     priv->port);
 971                                 break;
 972
 973                         case MLX4_STEERING_MODE_A0:
 974                                 break;
 975                         }
 976                         if (err)
 977                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 978                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 979                 }
 980
 981                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 982                                           0, MLX4_MCAST_DISABLE);
 983                 if (err)
 984                         en_err(priv, "Failed disabling multicast filter\n");
 985
 986                 /* Flush mcast filter and init it with broadcast address */
 987                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
 988                                     1, MLX4_MCAST_CONFIG);
 989
 990                 /* Update multicast list - we cache all addresses so they won't
 991                  * change while HW is updated holding the command semaphor */
 992                 netif_addr_lock_bh(dev);
 993                 mlx4_en_cache_mclist(dev);
 994                 netif_addr_unlock_bh(dev);
 995                 list_for_each_entry(mclist, &priv->mc_list, list) {
 996                         mcast_addr = mlx4_mac_to_u64(mclist->addr);
 997                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
 998                                             mcast_addr, 0, MLX4_MCAST_CONFIG);
 999                 }
1000                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1001                                           0, MLX4_MCAST_ENABLE);
1002                 if (err)
1003                         en_err(priv, "Failed enabling multicast filter\n");
1004
1005                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1006                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1007                         if (mclist->action == MCLIST_REM) {
1008                                 /* detach this address and delete from list */
1009                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1010                                 mc_list[5] = priv->port;
1011                                 err = mlx4_multicast_detach(mdev->dev,
1012                                                             &priv->rss_map.indir_qp,
1013                                                             mc_list,
1014                                                             MLX4_PROT_ETH,
1015                                                             mclist->reg_id);
1016                                 if (err)
1017                                         en_err(priv, "Fail to detach multicast address\n");
1018
1019                                 if (mclist->tunnel_reg_id) {
1020                                         err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1021                                         if (err)
1022                                                 en_err(priv, "Failed to detach multicast address\n");
1023                                 }
1024
1025                                 /* remove from list */
1026                                 list_del(&mclist->list);
1027                                 kfree(mclist);
1028                         } else if (mclist->action == MCLIST_ADD) {
1029                                 /* attach the address */
1030                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1031                                 /* needed for B0 steering support */
1032                                 mc_list[5] = priv->port;
1033                                 err = mlx4_multicast_attach(mdev->dev,
1034                                                             &priv->rss_map.indir_qp,
1035                                                             mc_list,
1036                                                             priv->port, 0,
1037                                                             MLX4_PROT_ETH,
1038                                                             &mclist->reg_id);
1039                                 if (err)
1040                                         en_err(priv, "Fail to attach multicast address\n");
1041
1042                                 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1043                                                                &mclist->tunnel_reg_id);
1044                                 if (err)
1045                                         en_err(priv, "Failed to attach multicast address\n");
1046                         }
1047                 }
1048         }
1049 }
1050
1051 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1052                                  struct net_device *dev,
1053                                  struct mlx4_en_dev *mdev)
1054 {
1055         struct netdev_hw_addr *ha;
1056         struct mlx4_mac_entry *entry;
1057         struct hlist_node *tmp;
1058         bool found;
1059         u64 mac;
1060         int err = 0;
1061         struct hlist_head *bucket;
1062         unsigned int i;
1063         int removed = 0;
1064         u32 prev_flags;
1065
1066         /* Note that we do not need to protect our mac_hash traversal with rcu,
1067          * since all modification code is protected by mdev->state_lock
1068          */
1069
1070         /* find what to remove */
1071         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1072                 bucket = &priv->mac_hash[i];
1073                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1074                         found = false;
1075                         netdev_for_each_uc_addr(ha, dev) {
1076                                 if (ether_addr_equal_64bits(entry->mac,
1077                                                             ha->addr)) {
1078                                         found = true;
1079                                         break;
1080                                 }
1081                         }
1082
1083                         /* MAC address of the port is not in uc list */
1084                         if (ether_addr_equal_64bits(entry->mac,
1085                                                     priv->current_mac))
1086                                 found = true;
1087
1088                         if (!found) {
1089                                 mac = mlx4_mac_to_u64(entry->mac);
1090                                 mlx4_en_uc_steer_release(priv, entry->mac,
1091                                                          priv->base_qpn,
1092                                                          entry->reg_id);
1093                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1094
1095                                 hlist_del_rcu(&entry->hlist);
1096                                 kfree_rcu(entry, rcu);
1097                                 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1098                                        entry->mac, priv->port);
1099                                 ++removed;
1100                         }
1101                 }
1102         }
1103
1104         /* if we didn't remove anything, there is no use in trying to add
1105          * again once we are in a forced promisc mode state
1106          */
1107         if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1108                 return;
1109
1110         prev_flags = priv->flags;
1111         priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1112
1113         /* find what to add */
1114         netdev_for_each_uc_addr(ha, dev) {
1115                 found = false;
1116                 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1117                 hlist_for_each_entry(entry, bucket, hlist) {
1118                         if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1119                                 found = true;
1120                                 break;
1121                         }
1122                 }
1123
1124                 if (!found) {
1125                         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1126                         if (!entry) {
1127                                 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1128                                        ha->addr, priv->port);
1129                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1130                                 break;
1131                         }
1132                         mac = mlx4_mac_to_u64(ha->addr);
1133                         memcpy(entry->mac, ha->addr, ETH_ALEN);
1134                         err = mlx4_register_mac(mdev->dev, priv->port, mac);
1135                         if (err < 0) {
1136                                 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1137                                        ha->addr, priv->port, err);
1138                                 kfree(entry);
1139                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1140                                 break;
1141                         }
1142                         err = mlx4_en_uc_steer_add(priv, ha->addr,
1143                                                    &priv->base_qpn,
1144                                                    &entry->reg_id);
1145                         if (err) {
1146                                 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1147                                        ha->addr, priv->port, err);
1148                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1149                                 kfree(entry);
1150                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1151                                 break;
1152                         } else {
1153                                 unsigned int mac_hash;
1154                                 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1155                                        ha->addr, priv->port);
1156                                 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1157                                 bucket = &priv->mac_hash[mac_hash];
1158                                 hlist_add_head_rcu(&entry->hlist, bucket);
1159                         }
1160                 }
1161         }
1162
1163         if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1164                 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1165                         priv->port);
1166         } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1167                 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1168                         priv->port);
1169         }
1170 }
1171
1172 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1173 {
1174         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1175                                                  rx_mode_task);
1176         struct mlx4_en_dev *mdev = priv->mdev;
1177         struct net_device *dev = priv->dev;
1178
1179         mutex_lock(&mdev->state_lock);
1180         if (!mdev->device_up) {
1181                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1182                 goto out;
1183         }
1184         if (!priv->port_up) {
1185                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1186                 goto out;
1187         }
1188
1189         if (!netif_carrier_ok(dev)) {
1190                 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1191                         if (priv->port_state.link_state) {
1192                                 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1193                                 netif_carrier_on(dev);
1194                                 en_dbg(LINK, priv, "Link Up\n");
1195                         }
1196                 }
1197         }
1198
1199         if (dev->priv_flags & IFF_UNICAST_FLT)
1200                 mlx4_en_do_uc_filter(priv, dev, mdev);
1201
1202         /* Promsicuous mode: disable all filters */
1203         if ((dev->flags & IFF_PROMISC) ||
1204             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1205                 mlx4_en_set_promisc_mode(priv, mdev);
1206                 goto out;
1207         }
1208
1209         /* Not in promiscuous mode */
1210         if (priv->flags & MLX4_EN_FLAG_PROMISC)
1211                 mlx4_en_clear_promisc_mode(priv, mdev);
1212
1213         mlx4_en_do_multicast(priv, dev, mdev);
1214 out:
1215         mutex_unlock(&mdev->state_lock);
1216 }
1217
1218 #ifdef CONFIG_NET_POLL_CONTROLLER
1219 static void mlx4_en_netpoll(struct net_device *dev)
1220 {
1221         struct mlx4_en_priv *priv = netdev_priv(dev);
1222         struct mlx4_en_cq *cq;
1223         int i;
1224
1225         for (i = 0; i < priv->rx_ring_num; i++) {
1226                 cq = priv->rx_cq[i];
1227                 napi_schedule(&cq->napi);
1228         }
1229 }
1230 #endif
1231
1232 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv)
1233 {
1234         u64 reg_id;
1235         int err = 0;
1236         int *qpn = &priv->base_qpn;
1237         struct mlx4_mac_entry *entry;
1238
1239         err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
1240         if (err)
1241                 return err;
1242
1243         err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
1244                                        &priv->tunnel_reg_id);
1245         if (err)
1246                 goto tunnel_err;
1247
1248         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1249         if (!entry) {
1250                 err = -ENOMEM;
1251                 goto alloc_err;
1252         }
1253
1254         memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
1255         memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
1256         entry->reg_id = reg_id;
1257         hlist_add_head_rcu(&entry->hlist,
1258                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
1259
1260         return 0;
1261
1262 alloc_err:
1263         if (priv->tunnel_reg_id)
1264                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1265
1266 tunnel_err:
1267         mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
1268         return err;
1269 }
1270
1271 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv)
1272 {
1273         u64 mac;
1274         unsigned int i;
1275         int qpn = priv->base_qpn;
1276         struct hlist_head *bucket;
1277         struct hlist_node *tmp;
1278         struct mlx4_mac_entry *entry;
1279
1280         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1281                 bucket = &priv->mac_hash[i];
1282                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1283                         mac = mlx4_mac_to_u64(entry->mac);
1284                         en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n",
1285                                entry->mac);
1286                         mlx4_en_uc_steer_release(priv, entry->mac,
1287                                                  qpn, entry->reg_id);
1288
1289                         mlx4_unregister_mac(priv->mdev->dev, priv->port, mac);
1290                         hlist_del_rcu(&entry->hlist);
1291                         kfree_rcu(entry, rcu);
1292                 }
1293         }
1294
1295         if (priv->tunnel_reg_id) {
1296                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1297                 priv->tunnel_reg_id = 0;
1298         }
1299 }
1300
1301 static void mlx4_en_tx_timeout(struct net_device *dev)
1302 {
1303         struct mlx4_en_priv *priv = netdev_priv(dev);
1304         struct mlx4_en_dev *mdev = priv->mdev;
1305         int i;
1306
1307         if (netif_msg_timer(priv))
1308                 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1309
1310         for (i = 0; i < priv->tx_ring_num; i++) {
1311                 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1312                         continue;
1313                 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1314                         i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn,
1315                         priv->tx_ring[i]->cons, priv->tx_ring[i]->prod);
1316         }
1317
1318         priv->port_stats.tx_timeout++;
1319         if (!test_and_set_bit(MLX4_EN_STATE_FLAG_RESTARTING, &priv->state)) {
1320                 en_dbg(DRV, priv, "Scheduling port restart\n");
1321                 queue_work(mdev->workqueue, &priv->restart_task);
1322         }
1323 }
1324
1325
1326 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
1327 {
1328         struct mlx4_en_priv *priv = netdev_priv(dev);
1329
1330         spin_lock_bh(&priv->stats_lock);
1331         memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
1332         spin_unlock_bh(&priv->stats_lock);
1333
1334         return &priv->ret_stats;
1335 }
1336
1337 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1338 {
1339         struct mlx4_en_cq *cq;
1340         int i;
1341
1342         /* If we haven't received a specific coalescing setting
1343          * (module param), we set the moderation parameters as follows:
1344          * - moder_cnt is set to the number of mtu sized packets to
1345          *   satisfy our coalescing target.
1346          * - moder_time is set to a fixed value.
1347          */
1348         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1349         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1350         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1351         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1352         en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1353                priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1354
1355         /* Setup cq moderation params */
1356         for (i = 0; i < priv->rx_ring_num; i++) {
1357                 cq = priv->rx_cq[i];
1358                 cq->moder_cnt = priv->rx_frames;
1359                 cq->moder_time = priv->rx_usecs;
1360                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1361                 priv->last_moder_packets[i] = 0;
1362                 priv->last_moder_bytes[i] = 0;
1363         }
1364
1365         for (i = 0; i < priv->tx_ring_num; i++) {
1366                 cq = priv->tx_cq[i];
1367                 cq->moder_cnt = priv->tx_frames;
1368                 cq->moder_time = priv->tx_usecs;
1369         }
1370
1371         /* Reset auto-moderation params */
1372         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1373         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1374         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1375         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1376         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1377         priv->adaptive_rx_coal = 1;
1378         priv->last_moder_jiffies = 0;
1379         priv->last_moder_tx_packets = 0;
1380 }
1381
1382 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1383 {
1384         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1385         struct mlx4_en_cq *cq;
1386         unsigned long packets;
1387         unsigned long rate;
1388         unsigned long avg_pkt_size;
1389         unsigned long rx_packets;
1390         unsigned long rx_bytes;
1391         unsigned long rx_pkt_diff;
1392         int moder_time;
1393         int ring, err;
1394
1395         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1396                 return;
1397
1398         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1399                 spin_lock_bh(&priv->stats_lock);
1400                 rx_packets = priv->rx_ring[ring]->packets;
1401                 rx_bytes = priv->rx_ring[ring]->bytes;
1402                 spin_unlock_bh(&priv->stats_lock);
1403
1404                 rx_pkt_diff = ((unsigned long) (rx_packets -
1405                                 priv->last_moder_packets[ring]));
1406                 packets = rx_pkt_diff;
1407                 rate = packets * HZ / period;
1408                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1409                                 priv->last_moder_bytes[ring])) / packets : 0;
1410
1411                 /* Apply auto-moderation only when packet rate
1412                  * exceeds a rate that it matters */
1413                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1414                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1415                         if (rate < priv->pkt_rate_low)
1416                                 moder_time = priv->rx_usecs_low;
1417                         else if (rate > priv->pkt_rate_high)
1418                                 moder_time = priv->rx_usecs_high;
1419                         else
1420                                 moder_time = (rate - priv->pkt_rate_low) *
1421                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1422                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
1423                                         priv->rx_usecs_low;
1424                 } else {
1425                         moder_time = priv->rx_usecs_low;
1426                 }
1427
1428                 if (moder_time != priv->last_moder_time[ring]) {
1429                         priv->last_moder_time[ring] = moder_time;
1430                         cq = priv->rx_cq[ring];
1431                         cq->moder_time = moder_time;
1432                         cq->moder_cnt = priv->rx_frames;
1433                         err = mlx4_en_set_cq_moder(priv, cq);
1434                         if (err)
1435                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1436                                        ring);
1437                 }
1438                 priv->last_moder_packets[ring] = rx_packets;
1439                 priv->last_moder_bytes[ring] = rx_bytes;
1440         }
1441
1442         priv->last_moder_jiffies = jiffies;
1443 }
1444
1445 static void mlx4_en_do_get_stats(struct work_struct *work)
1446 {
1447         struct delayed_work *delay = to_delayed_work(work);
1448         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1449                                                  stats_task);
1450         struct mlx4_en_dev *mdev = priv->mdev;
1451         int err;
1452
1453         mutex_lock(&mdev->state_lock);
1454         if (mdev->device_up) {
1455                 if (priv->port_up) {
1456                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1457                         if (err)
1458                                 en_dbg(HW, priv, "Could not update stats\n");
1459
1460                         mlx4_en_auto_moderation(priv);
1461                 }
1462
1463                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1464         }
1465         if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1466                 mlx4_en_do_set_mac(priv, priv->current_mac);
1467                 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1468         }
1469         mutex_unlock(&mdev->state_lock);
1470 }
1471
1472 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1473  * periodically
1474  */
1475 static void mlx4_en_service_task(struct work_struct *work)
1476 {
1477         struct delayed_work *delay = to_delayed_work(work);
1478         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1479                                                  service_task);
1480         struct mlx4_en_dev *mdev = priv->mdev;
1481
1482         mutex_lock(&mdev->state_lock);
1483         if (mdev->device_up) {
1484                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1485                         mlx4_en_ptp_overflow_check(mdev);
1486
1487                 mlx4_en_recover_from_oom(priv);
1488                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1489                                    SERVICE_TASK_DELAY);
1490         }
1491         mutex_unlock(&mdev->state_lock);
1492 }
1493
1494 static void mlx4_en_linkstate(struct work_struct *work)
1495 {
1496         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1497                                                  linkstate_task);
1498         struct mlx4_en_dev *mdev = priv->mdev;
1499         int linkstate = priv->link_state;
1500
1501         mutex_lock(&mdev->state_lock);
1502         /* If observable port state changed set carrier state and
1503          * report to system log */
1504         if (priv->last_link_state != linkstate) {
1505                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1506                         en_info(priv, "Link Down\n");
1507                         netif_carrier_off(priv->dev);
1508                 } else {
1509                         en_info(priv, "Link Up\n");
1510                         netif_carrier_on(priv->dev);
1511                 }
1512         }
1513         priv->last_link_state = linkstate;
1514         mutex_unlock(&mdev->state_lock);
1515 }
1516
1517 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1518 {
1519         struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1520         int numa_node = priv->mdev->dev->numa_node;
1521
1522         if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1523                 return -ENOMEM;
1524
1525         cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node),
1526                         ring->affinity_mask);
1527         return 0;
1528 }
1529
1530 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1531 {
1532         free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1533 }
1534
1535 int mlx4_en_start_port(struct net_device *dev)
1536 {
1537         struct mlx4_en_priv *priv = netdev_priv(dev);
1538         struct mlx4_en_dev *mdev = priv->mdev;
1539         struct mlx4_en_cq *cq;
1540         struct mlx4_en_tx_ring *tx_ring;
1541         int rx_index = 0;
1542         int tx_index = 0;
1543         int err = 0;
1544         int i;
1545         int j;
1546         u8 mc_list[16] = {0};
1547
1548         if (priv->port_up) {
1549                 en_dbg(DRV, priv, "start port called while port already up\n");
1550                 return 0;
1551         }
1552
1553         INIT_LIST_HEAD(&priv->mc_list);
1554         INIT_LIST_HEAD(&priv->curr_list);
1555         INIT_LIST_HEAD(&priv->ethtool_list);
1556         memset(&priv->ethtool_rules[0], 0,
1557                sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1558
1559         /* Calculate Rx buf size */
1560         dev->mtu = min(dev->mtu, priv->max_mtu);
1561         mlx4_en_calc_rx_buf(dev);
1562         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1563
1564         /* Configure rx cq's and rings */
1565         err = mlx4_en_activate_rx_rings(priv);
1566         if (err) {
1567                 en_err(priv, "Failed to activate RX rings\n");
1568                 return err;
1569         }
1570         for (i = 0; i < priv->rx_ring_num; i++) {
1571                 cq = priv->rx_cq[i];
1572
1573                 mlx4_en_cq_init_lock(cq);
1574
1575                 err = mlx4_en_init_affinity_hint(priv, i);
1576                 if (err) {
1577                         en_err(priv, "Failed preparing IRQ affinity hint\n");
1578                         goto cq_err;
1579                 }
1580
1581                 err = mlx4_en_activate_cq(priv, cq, i);
1582                 if (err) {
1583                         en_err(priv, "Failed activating Rx CQ\n");
1584                         mlx4_en_free_affinity_hint(priv, i);
1585                         goto cq_err;
1586                 }
1587
1588                 for (j = 0; j < cq->size; j++) {
1589                         struct mlx4_cqe *cqe = NULL;
1590
1591                         cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) +
1592                               priv->cqe_factor;
1593                         cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1594                 }
1595
1596                 err = mlx4_en_set_cq_moder(priv, cq);
1597                 if (err) {
1598                         en_err(priv, "Failed setting cq moderation parameters\n");
1599                         mlx4_en_deactivate_cq(priv, cq);
1600                         mlx4_en_free_affinity_hint(priv, i);
1601                         goto cq_err;
1602                 }
1603                 mlx4_en_arm_cq(priv, cq);
1604                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1605                 ++rx_index;
1606         }
1607
1608         /* Set qp number */
1609         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1610         err = mlx4_en_get_qp(priv);
1611         if (err) {
1612                 en_err(priv, "Failed getting eth qp\n");
1613                 goto cq_err;
1614         }
1615         mdev->mac_removed[priv->port] = 0;
1616
1617         priv->counter_index =
1618                         mlx4_get_default_counter_index(mdev->dev, priv->port);
1619
1620         err = mlx4_en_config_rss_steer(priv);
1621         if (err) {
1622                 en_err(priv, "Failed configuring rss steering\n");
1623                 goto mac_err;
1624         }
1625
1626         err = mlx4_en_create_drop_qp(priv);
1627         if (err)
1628                 goto rss_err;
1629
1630         /* Configure tx cq's and rings */
1631         for (i = 0; i < priv->tx_ring_num; i++) {
1632                 /* Configure cq */
1633                 cq = priv->tx_cq[i];
1634                 err = mlx4_en_activate_cq(priv, cq, i);
1635                 if (err) {
1636                         en_err(priv, "Failed allocating Tx CQ\n");
1637                         goto tx_err;
1638                 }
1639                 err = mlx4_en_set_cq_moder(priv, cq);
1640                 if (err) {
1641                         en_err(priv, "Failed setting cq moderation parameters\n");
1642                         mlx4_en_deactivate_cq(priv, cq);
1643                         goto tx_err;
1644                 }
1645                 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1646                 cq->buf->wqe_index = cpu_to_be16(0xffff);
1647
1648                 /* Configure ring */
1649                 tx_ring = priv->tx_ring[i];
1650                 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1651                         i / priv->num_tx_rings_p_up);
1652                 if (err) {
1653                         en_err(priv, "Failed allocating Tx ring\n");
1654                         mlx4_en_deactivate_cq(priv, cq);
1655                         goto tx_err;
1656                 }
1657                 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1658
1659                 /* Arm CQ for TX completions */
1660                 mlx4_en_arm_cq(priv, cq);
1661
1662                 /* Set initial ownership of all Tx TXBBs to SW (1) */
1663                 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1664                         *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1665                 ++tx_index;
1666         }
1667
1668         /* Configure port */
1669         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1670                                     priv->rx_skb_size + ETH_FCS_LEN,
1671                                     priv->prof->tx_pause,
1672                                     priv->prof->tx_ppp,
1673                                     priv->prof->rx_pause,
1674                                     priv->prof->rx_ppp);
1675         if (err) {
1676                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1677                        priv->port, err);
1678                 goto tx_err;
1679         }
1680         /* Set default qp number */
1681         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1682         if (err) {
1683                 en_err(priv, "Failed setting default qp numbers\n");
1684                 goto tx_err;
1685         }
1686
1687         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1688                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1689                 if (err) {
1690                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1691                                err);
1692                         goto tx_err;
1693                 }
1694         }
1695
1696         /* Init port */
1697         en_dbg(HW, priv, "Initializing port\n");
1698         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1699         if (err) {
1700                 en_err(priv, "Failed Initializing port\n");
1701                 goto tx_err;
1702         }
1703
1704         /* Set Unicast and VXLAN steering rules */
1705         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 &&
1706             mlx4_en_set_rss_steer_rules(priv))
1707                 mlx4_warn(mdev, "Failed setting steering rules\n");
1708
1709         /* Attach rx QP to bradcast address */
1710         eth_broadcast_addr(&mc_list[10]);
1711         mc_list[5] = priv->port; /* needed for B0 steering support */
1712         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1713                                   priv->port, 0, MLX4_PROT_ETH,
1714                                   &priv->broadcast_id))
1715                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1716
1717         /* Must redo promiscuous mode setup. */
1718         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1719
1720         /* Schedule multicast task to populate multicast list */
1721         queue_work(mdev->workqueue, &priv->rx_mode_task);
1722
1723 #ifdef CONFIG_MLX4_EN_VXLAN
1724         if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1725                 vxlan_get_rx_port(dev);
1726 #endif
1727         priv->port_up = true;
1728
1729         /* Process all completions if exist to prevent
1730          * the queues freezing if they are full
1731          */
1732         for (i = 0; i < priv->rx_ring_num; i++) {
1733                 local_bh_disable();
1734                 napi_schedule(&priv->rx_cq[i]->napi);
1735                 local_bh_enable();
1736         }
1737
1738         clear_bit(MLX4_EN_STATE_FLAG_RESTARTING, &priv->state);
1739         netif_tx_start_all_queues(dev);
1740         netif_device_attach(dev);
1741
1742         return 0;
1743
1744 tx_err:
1745         while (tx_index--) {
1746                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1747                 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1748         }
1749         mlx4_en_destroy_drop_qp(priv);
1750 rss_err:
1751         mlx4_en_release_rss_steer(priv);
1752 mac_err:
1753         mlx4_en_put_qp(priv);
1754 cq_err:
1755         while (rx_index--) {
1756                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1757                 mlx4_en_free_affinity_hint(priv, rx_index);
1758         }
1759         for (i = 0; i < priv->rx_ring_num; i++)
1760                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1761
1762         return err; /* need to close devices */
1763 }
1764
1765
1766 void mlx4_en_stop_port(struct net_device *dev, int detach)
1767 {
1768         struct mlx4_en_priv *priv = netdev_priv(dev);
1769         struct mlx4_en_dev *mdev = priv->mdev;
1770         struct mlx4_en_mc_list *mclist, *tmp;
1771         struct ethtool_flow_id *flow, *tmp_flow;
1772         int i;
1773         u8 mc_list[16] = {0};
1774
1775         if (!priv->port_up) {
1776                 en_dbg(DRV, priv, "stop port called while port already down\n");
1777                 return;
1778         }
1779
1780         /* close port*/
1781         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1782
1783         /* Synchronize with tx routine */
1784         netif_tx_lock_bh(dev);
1785         if (detach)
1786                 netif_device_detach(dev);
1787         netif_tx_stop_all_queues(dev);
1788         netif_tx_unlock_bh(dev);
1789
1790         netif_tx_disable(dev);
1791
1792         /* Set port as not active */
1793         priv->port_up = false;
1794         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1795
1796         /* Promsicuous mode */
1797         if (mdev->dev->caps.steering_mode ==
1798             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1799                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1800                                  MLX4_EN_FLAG_MC_PROMISC);
1801                 mlx4_flow_steer_promisc_remove(mdev->dev,
1802                                                priv->port,
1803                                                MLX4_FS_ALL_DEFAULT);
1804                 mlx4_flow_steer_promisc_remove(mdev->dev,
1805                                                priv->port,
1806                                                MLX4_FS_MC_DEFAULT);
1807         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1808                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1809
1810                 /* Disable promiscouos mode */
1811                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1812                                             priv->port);
1813
1814                 /* Disable Multicast promisc */
1815                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1816                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1817                                                       priv->port);
1818                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1819                 }
1820         }
1821
1822         /* Detach All multicasts */
1823         eth_broadcast_addr(&mc_list[10]);
1824         mc_list[5] = priv->port; /* needed for B0 steering support */
1825         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1826                               MLX4_PROT_ETH, priv->broadcast_id);
1827         list_for_each_entry(mclist, &priv->curr_list, list) {
1828                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1829                 mc_list[5] = priv->port;
1830                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1831                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1832                 if (mclist->tunnel_reg_id)
1833                         mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1834         }
1835         mlx4_en_clear_list(dev);
1836         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1837                 list_del(&mclist->list);
1838                 kfree(mclist);
1839         }
1840
1841         /* Flush multicast filter */
1842         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1843
1844         /* Remove flow steering rules for the port*/
1845         if (mdev->dev->caps.steering_mode ==
1846             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1847                 ASSERT_RTNL();
1848                 list_for_each_entry_safe(flow, tmp_flow,
1849                                          &priv->ethtool_list, list) {
1850                         mlx4_flow_detach(mdev->dev, flow->id);
1851                         list_del(&flow->list);
1852                 }
1853         }
1854
1855         mlx4_en_destroy_drop_qp(priv);
1856
1857         /* Free TX Rings */
1858         for (i = 0; i < priv->tx_ring_num; i++) {
1859                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1860                 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1861         }
1862         msleep(10);
1863
1864         for (i = 0; i < priv->tx_ring_num; i++)
1865                 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1866
1867         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1868                 mlx4_en_delete_rss_steer_rules(priv);
1869
1870         /* Free RSS qps */
1871         mlx4_en_release_rss_steer(priv);
1872
1873         /* Unregister Mac address for the port */
1874         mlx4_en_put_qp(priv);
1875         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1876                 mdev->mac_removed[priv->port] = 1;
1877
1878         /* Free RX Rings */
1879         for (i = 0; i < priv->rx_ring_num; i++) {
1880                 struct mlx4_en_cq *cq = priv->rx_cq[i];
1881
1882                 local_bh_disable();
1883                 while (!mlx4_en_cq_lock_napi(cq)) {
1884                         pr_info("CQ %d locked\n", i);
1885                         mdelay(1);
1886                 }
1887                 local_bh_enable();
1888
1889                 napi_synchronize(&cq->napi);
1890                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1891                 mlx4_en_deactivate_cq(priv, cq);
1892
1893                 mlx4_en_free_affinity_hint(priv, i);
1894         }
1895 }
1896
1897 static void mlx4_en_restart(struct work_struct *work)
1898 {
1899         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1900                                                  restart_task);
1901         struct mlx4_en_dev *mdev = priv->mdev;
1902         struct net_device *dev = priv->dev;
1903
1904         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1905
1906         mutex_lock(&mdev->state_lock);
1907         if (priv->port_up) {
1908                 mlx4_en_stop_port(dev, 1);
1909                 if (mlx4_en_start_port(dev))
1910                         en_err(priv, "Failed restarting port %d\n", priv->port);
1911         }
1912         mutex_unlock(&mdev->state_lock);
1913 }
1914
1915 static void mlx4_en_clear_stats(struct net_device *dev)
1916 {
1917         struct mlx4_en_priv *priv = netdev_priv(dev);
1918         struct mlx4_en_dev *mdev = priv->mdev;
1919         int i;
1920
1921         if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1922                 en_dbg(HW, priv, "Failed dumping statistics\n");
1923
1924         memset(&priv->stats, 0, sizeof(priv->stats));
1925         memset(&priv->pstats, 0, sizeof(priv->pstats));
1926         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1927         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1928         memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats));
1929         memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats));
1930         memset(&priv->rx_priority_flowstats, 0,
1931                sizeof(priv->rx_priority_flowstats));
1932         memset(&priv->tx_priority_flowstats, 0,
1933                sizeof(priv->tx_priority_flowstats));
1934         memset(&priv->pf_stats, 0, sizeof(priv->pf_stats));
1935
1936         for (i = 0; i < priv->tx_ring_num; i++) {
1937                 priv->tx_ring[i]->bytes = 0;
1938                 priv->tx_ring[i]->packets = 0;
1939                 priv->tx_ring[i]->tx_csum = 0;
1940         }
1941         for (i = 0; i < priv->rx_ring_num; i++) {
1942                 priv->rx_ring[i]->bytes = 0;
1943                 priv->rx_ring[i]->packets = 0;
1944                 priv->rx_ring[i]->csum_ok = 0;
1945                 priv->rx_ring[i]->csum_none = 0;
1946                 priv->rx_ring[i]->csum_complete = 0;
1947         }
1948 }
1949
1950 static int mlx4_en_open(struct net_device *dev)
1951 {
1952         struct mlx4_en_priv *priv = netdev_priv(dev);
1953         struct mlx4_en_dev *mdev = priv->mdev;
1954         int err = 0;
1955
1956         mutex_lock(&mdev->state_lock);
1957
1958         if (!mdev->device_up) {
1959                 en_err(priv, "Cannot open - device down/disabled\n");
1960                 err = -EBUSY;
1961                 goto out;
1962         }
1963
1964         /* Reset HW statistics and SW counters */
1965         mlx4_en_clear_stats(dev);
1966
1967         err = mlx4_en_start_port(dev);
1968         if (err)
1969                 en_err(priv, "Failed starting port:%d\n", priv->port);
1970
1971 out:
1972         mutex_unlock(&mdev->state_lock);
1973         return err;
1974 }
1975
1976
1977 static int mlx4_en_close(struct net_device *dev)
1978 {
1979         struct mlx4_en_priv *priv = netdev_priv(dev);
1980         struct mlx4_en_dev *mdev = priv->mdev;
1981
1982         en_dbg(IFDOWN, priv, "Close port called\n");
1983
1984         mutex_lock(&mdev->state_lock);
1985
1986         mlx4_en_stop_port(dev, 0);
1987         netif_carrier_off(dev);
1988
1989         mutex_unlock(&mdev->state_lock);
1990         return 0;
1991 }
1992
1993 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1994 {
1995         int i;
1996
1997 #ifdef CONFIG_RFS_ACCEL
1998         priv->dev->rx_cpu_rmap = NULL;
1999 #endif
2000
2001         for (i = 0; i < priv->tx_ring_num; i++) {
2002                 if (priv->tx_ring && priv->tx_ring[i])
2003                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
2004                 if (priv->tx_cq && priv->tx_cq[i])
2005                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
2006         }
2007
2008         for (i = 0; i < priv->rx_ring_num; i++) {
2009                 if (priv->rx_ring[i])
2010                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2011                                 priv->prof->rx_ring_size, priv->stride);
2012                 if (priv->rx_cq[i])
2013                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2014         }
2015
2016 }
2017
2018 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
2019 {
2020         struct mlx4_en_port_profile *prof = priv->prof;
2021         int i;
2022         int node;
2023
2024         /* Create tx Rings */
2025         for (i = 0; i < priv->tx_ring_num; i++) {
2026                 node = cpu_to_node(i % num_online_cpus());
2027                 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
2028                                       prof->tx_ring_size, i, TX, node))
2029                         goto err;
2030
2031                 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
2032                                            prof->tx_ring_size, TXBB_SIZE,
2033                                            node, i))
2034                         goto err;
2035         }
2036
2037         /* Create rx Rings */
2038         for (i = 0; i < priv->rx_ring_num; i++) {
2039                 node = cpu_to_node(i % num_online_cpus());
2040                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2041                                       prof->rx_ring_size, i, RX, node))
2042                         goto err;
2043
2044                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2045                                            prof->rx_ring_size, priv->stride,
2046                                            node))
2047                         goto err;
2048         }
2049
2050 #ifdef CONFIG_RFS_ACCEL
2051         priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port);
2052 #endif
2053
2054         return 0;
2055
2056 err:
2057         en_err(priv, "Failed to allocate NIC resources\n");
2058         for (i = 0; i < priv->rx_ring_num; i++) {
2059                 if (priv->rx_ring[i])
2060                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2061                                                 prof->rx_ring_size,
2062                                                 priv->stride);
2063                 if (priv->rx_cq[i])
2064                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2065         }
2066         for (i = 0; i < priv->tx_ring_num; i++) {
2067                 if (priv->tx_ring[i])
2068                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
2069                 if (priv->tx_cq[i])
2070                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
2071         }
2072         return -ENOMEM;
2073 }
2074
2075
2076 void mlx4_en_destroy_netdev(struct net_device *dev)
2077 {
2078         struct mlx4_en_priv *priv = netdev_priv(dev);
2079         struct mlx4_en_dev *mdev = priv->mdev;
2080
2081         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2082
2083         /* Unregister device - this will close the port if it was up */
2084         if (priv->registered)
2085                 unregister_netdev(dev);
2086
2087         if (priv->allocated)
2088                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2089
2090         cancel_delayed_work(&priv->stats_task);
2091         cancel_delayed_work(&priv->service_task);
2092         /* flush any pending task for this netdev */
2093         flush_workqueue(mdev->workqueue);
2094
2095         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2096                 mlx4_en_remove_timestamp(mdev);
2097
2098         /* Detach the netdev so tasks would not attempt to access it */
2099         mutex_lock(&mdev->state_lock);
2100         mdev->pndev[priv->port] = NULL;
2101         mdev->upper[priv->port] = NULL;
2102         mutex_unlock(&mdev->state_lock);
2103
2104         mlx4_en_free_resources(priv);
2105
2106         kfree(priv->tx_ring);
2107         kfree(priv->tx_cq);
2108
2109         free_netdev(dev);
2110 }
2111
2112 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2113 {
2114         struct mlx4_en_priv *priv = netdev_priv(dev);
2115         struct mlx4_en_dev *mdev = priv->mdev;
2116         int err = 0;
2117
2118         en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2119                  dev->mtu, new_mtu);
2120
2121         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
2122                 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
2123                 return -EPERM;
2124         }
2125         dev->mtu = new_mtu;
2126
2127         if (netif_running(dev)) {
2128                 mutex_lock(&mdev->state_lock);
2129                 if (!mdev->device_up) {
2130                         /* NIC is probably restarting - let restart task reset
2131                          * the port */
2132                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2133                 } else {
2134                         mlx4_en_stop_port(dev, 1);
2135                         err = mlx4_en_start_port(dev);
2136                         if (err) {
2137                                 en_err(priv, "Failed restarting port:%d\n",
2138                                          priv->port);
2139                                 if (!test_and_set_bit(MLX4_EN_STATE_FLAG_RESTARTING,
2140                                                       &priv->state))
2141                                         queue_work(mdev->workqueue, &priv->restart_task);
2142                         }
2143                 }
2144                 mutex_unlock(&mdev->state_lock);
2145         }
2146         return 0;
2147 }
2148
2149 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2150 {
2151         struct mlx4_en_priv *priv = netdev_priv(dev);
2152         struct mlx4_en_dev *mdev = priv->mdev;
2153         struct hwtstamp_config config;
2154
2155         if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2156                 return -EFAULT;
2157
2158         /* reserved for future extensions */
2159         if (config.flags)
2160                 return -EINVAL;
2161
2162         /* device doesn't support time stamping */
2163         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2164                 return -EINVAL;
2165
2166         /* TX HW timestamp */
2167         switch (config.tx_type) {
2168         case HWTSTAMP_TX_OFF:
2169         case HWTSTAMP_TX_ON:
2170                 break;
2171         default:
2172                 return -ERANGE;
2173         }
2174
2175         /* RX HW timestamp */
2176         switch (config.rx_filter) {
2177         case HWTSTAMP_FILTER_NONE:
2178                 break;
2179         case HWTSTAMP_FILTER_ALL:
2180         case HWTSTAMP_FILTER_SOME:
2181         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2182         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2183         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2184         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2185         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2186         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2187         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2188         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2189         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2190         case HWTSTAMP_FILTER_PTP_V2_EVENT:
2191         case HWTSTAMP_FILTER_PTP_V2_SYNC:
2192         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2193                 config.rx_filter = HWTSTAMP_FILTER_ALL;
2194                 break;
2195         default:
2196                 return -ERANGE;
2197         }
2198
2199         if (mlx4_en_reset_config(dev, config, dev->features)) {
2200                 config.tx_type = HWTSTAMP_TX_OFF;
2201                 config.rx_filter = HWTSTAMP_FILTER_NONE;
2202         }
2203
2204         return copy_to_user(ifr->ifr_data, &config,
2205                             sizeof(config)) ? -EFAULT : 0;
2206 }
2207
2208 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2209 {
2210         struct mlx4_en_priv *priv = netdev_priv(dev);
2211
2212         return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2213                             sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2214 }
2215
2216 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2217 {
2218         switch (cmd) {
2219         case SIOCSHWTSTAMP:
2220                 return mlx4_en_hwtstamp_set(dev, ifr);
2221         case SIOCGHWTSTAMP:
2222                 return mlx4_en_hwtstamp_get(dev, ifr);
2223         default:
2224                 return -EOPNOTSUPP;
2225         }
2226 }
2227
2228 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev,
2229                                               netdev_features_t features)
2230 {
2231         struct mlx4_en_priv *en_priv = netdev_priv(netdev);
2232         struct mlx4_en_dev *mdev = en_priv->mdev;
2233
2234         /* Since there is no support for separate RX C-TAG/S-TAG vlan accel
2235          * enable/disable make sure S-TAG flag is always in same state as
2236          * C-TAG.
2237          */
2238         if (features & NETIF_F_HW_VLAN_CTAG_RX &&
2239             !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2240                 features |= NETIF_F_HW_VLAN_STAG_RX;
2241         else
2242                 features &= ~NETIF_F_HW_VLAN_STAG_RX;
2243
2244         return features;
2245 }
2246
2247 static int mlx4_en_set_features(struct net_device *netdev,
2248                 netdev_features_t features)
2249 {
2250         struct mlx4_en_priv *priv = netdev_priv(netdev);
2251         bool reset = false;
2252         int ret = 0;
2253
2254         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) {
2255                 en_info(priv, "Turn %s RX-FCS\n",
2256                         (features & NETIF_F_RXFCS) ? "ON" : "OFF");
2257                 reset = true;
2258         }
2259
2260         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
2261                 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
2262
2263                 en_info(priv, "Turn %s RX-ALL\n",
2264                         ignore_fcs_value ? "ON" : "OFF");
2265                 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev,
2266                                               priv->port, ignore_fcs_value);
2267                 if (ret)
2268                         return ret;
2269         }
2270
2271         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2272                 en_info(priv, "Turn %s RX vlan strip offload\n",
2273                         (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2274                 reset = true;
2275         }
2276
2277         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
2278                 en_info(priv, "Turn %s TX vlan strip offload\n",
2279                         (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF");
2280
2281         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX))
2282                 en_info(priv, "Turn %s TX S-VLAN strip offload\n",
2283                         (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF");
2284
2285         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) {
2286                 en_info(priv, "Turn %s loopback\n",
2287                         (features & NETIF_F_LOOPBACK) ? "ON" : "OFF");
2288                 mlx4_en_update_loopback_state(netdev, features);
2289         }
2290
2291         if (reset) {
2292                 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config,
2293                                            features);
2294                 if (ret)
2295                         return ret;
2296         }
2297
2298         return 0;
2299 }
2300
2301 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2302 {
2303         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2304         struct mlx4_en_dev *mdev = en_priv->mdev;
2305         u64 mac_u64 = mlx4_mac_to_u64(mac);
2306
2307         if (is_multicast_ether_addr(mac))
2308                 return -EINVAL;
2309
2310         return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2311 }
2312
2313 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2314 {
2315         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2316         struct mlx4_en_dev *mdev = en_priv->mdev;
2317
2318         return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2319 }
2320
2321 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
2322                                int max_tx_rate)
2323 {
2324         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2325         struct mlx4_en_dev *mdev = en_priv->mdev;
2326
2327         return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate,
2328                                 max_tx_rate);
2329 }
2330
2331 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2332 {
2333         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2334         struct mlx4_en_dev *mdev = en_priv->mdev;
2335
2336         return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2337 }
2338
2339 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2340 {
2341         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2342         struct mlx4_en_dev *mdev = en_priv->mdev;
2343
2344         return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2345 }
2346
2347 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2348 {
2349         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2350         struct mlx4_en_dev *mdev = en_priv->mdev;
2351
2352         return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2353 }
2354
2355 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf,
2356                                 struct ifla_vf_stats *vf_stats)
2357 {
2358         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2359         struct mlx4_en_dev *mdev = en_priv->mdev;
2360
2361         return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats);
2362 }
2363
2364 #define PORT_ID_BYTE_LEN 8
2365 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2366                                     struct netdev_phys_item_id *ppid)
2367 {
2368         struct mlx4_en_priv *priv = netdev_priv(dev);
2369         struct mlx4_dev *mdev = priv->mdev->dev;
2370         int i;
2371         u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2372
2373         if (!phys_port_id)
2374                 return -EOPNOTSUPP;
2375
2376         ppid->id_len = sizeof(phys_port_id);
2377         for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2378                 ppid->id[i] =  phys_port_id & 0xff;
2379                 phys_port_id >>= 8;
2380         }
2381         return 0;
2382 }
2383
2384 #ifdef CONFIG_MLX4_EN_VXLAN
2385 static void mlx4_en_add_vxlan_offloads(struct work_struct *work)
2386 {
2387         int ret;
2388         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2389                                                  vxlan_add_task);
2390
2391         ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2392         if (ret)
2393                 goto out;
2394
2395         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2396                                   VXLAN_STEER_BY_OUTER_MAC, 1);
2397 out:
2398         if (ret) {
2399                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2400                 return;
2401         }
2402
2403         /* set offloads */
2404         priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
2405                                       NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL;
2406 }
2407
2408 static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
2409 {
2410         int ret;
2411         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2412                                                  vxlan_del_task);
2413         /* unset offloads */
2414         priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
2415                                       NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL);
2416
2417         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2418                                   VXLAN_STEER_BY_OUTER_MAC, 0);
2419         if (ret)
2420                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2421
2422         priv->vxlan_port = 0;
2423 }
2424
2425 static void mlx4_en_add_vxlan_port(struct  net_device *dev,
2426                                    sa_family_t sa_family, __be16 port)
2427 {
2428         struct mlx4_en_priv *priv = netdev_priv(dev);
2429         __be16 current_port;
2430
2431         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2432                 return;
2433
2434         if (sa_family == AF_INET6)
2435                 return;
2436
2437         current_port = priv->vxlan_port;
2438         if (current_port && current_port != port) {
2439                 en_warn(priv, "vxlan port %d configured, can't add port %d\n",
2440                         ntohs(current_port), ntohs(port));
2441                 return;
2442         }
2443
2444         priv->vxlan_port = port;
2445         queue_work(priv->mdev->workqueue, &priv->vxlan_add_task);
2446 }
2447
2448 static void mlx4_en_del_vxlan_port(struct  net_device *dev,
2449                                    sa_family_t sa_family, __be16 port)
2450 {
2451         struct mlx4_en_priv *priv = netdev_priv(dev);
2452         __be16 current_port;
2453
2454         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2455                 return;
2456
2457         if (sa_family == AF_INET6)
2458                 return;
2459
2460         current_port = priv->vxlan_port;
2461         if (current_port != port) {
2462                 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port));
2463                 return;
2464         }
2465
2466         queue_work(priv->mdev->workqueue, &priv->vxlan_del_task);
2467 }
2468
2469 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2470                                                 struct net_device *dev,
2471                                                 netdev_features_t features)
2472 {
2473         features = vlan_features_check(skb, features);
2474         return vxlan_features_check(skb, features);
2475 }
2476 #endif
2477
2478 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate)
2479 {
2480         struct mlx4_en_priv *priv = netdev_priv(dev);
2481         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[queue_index];
2482         struct mlx4_update_qp_params params;
2483         int err;
2484
2485         if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT))
2486                 return -EOPNOTSUPP;
2487
2488         /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */
2489         if (maxrate >> 12) {
2490                 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS;
2491                 params.rate_val  = maxrate / 1000;
2492         } else if (maxrate) {
2493                 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS;
2494                 params.rate_val  = maxrate;
2495         } else { /* zero serves to revoke the QP rate-limitation */
2496                 params.rate_unit = 0;
2497                 params.rate_val  = 0;
2498         }
2499
2500         err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT,
2501                              &params);
2502         return err;
2503 }
2504
2505 static const struct net_device_ops mlx4_netdev_ops = {
2506         .ndo_open               = mlx4_en_open,
2507         .ndo_stop               = mlx4_en_close,
2508         .ndo_start_xmit         = mlx4_en_xmit,
2509         .ndo_select_queue       = mlx4_en_select_queue,
2510         .ndo_get_stats          = mlx4_en_get_stats,
2511         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2512         .ndo_set_mac_address    = mlx4_en_set_mac,
2513         .ndo_validate_addr      = eth_validate_addr,
2514         .ndo_change_mtu         = mlx4_en_change_mtu,
2515         .ndo_do_ioctl           = mlx4_en_ioctl,
2516         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2517         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2518         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2519 #ifdef CONFIG_NET_POLL_CONTROLLER
2520         .ndo_poll_controller    = mlx4_en_netpoll,
2521 #endif
2522         .ndo_set_features       = mlx4_en_set_features,
2523         .ndo_fix_features       = mlx4_en_fix_features,
2524         .ndo_setup_tc           = mlx4_en_setup_tc,
2525 #ifdef CONFIG_RFS_ACCEL
2526         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2527 #endif
2528 #ifdef CONFIG_NET_RX_BUSY_POLL
2529         .ndo_busy_poll          = mlx4_en_low_latency_recv,
2530 #endif
2531         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2532 #ifdef CONFIG_MLX4_EN_VXLAN
2533         .ndo_add_vxlan_port     = mlx4_en_add_vxlan_port,
2534         .ndo_del_vxlan_port     = mlx4_en_del_vxlan_port,
2535         .ndo_features_check     = mlx4_en_features_check,
2536 #endif
2537         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2538 };
2539
2540 static const struct net_device_ops mlx4_netdev_ops_master = {
2541         .ndo_open               = mlx4_en_open,
2542         .ndo_stop               = mlx4_en_close,
2543         .ndo_start_xmit         = mlx4_en_xmit,
2544         .ndo_select_queue       = mlx4_en_select_queue,
2545         .ndo_get_stats          = mlx4_en_get_stats,
2546         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2547         .ndo_set_mac_address    = mlx4_en_set_mac,
2548         .ndo_validate_addr      = eth_validate_addr,
2549         .ndo_change_mtu         = mlx4_en_change_mtu,
2550         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2551         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2552         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2553         .ndo_set_vf_mac         = mlx4_en_set_vf_mac,
2554         .ndo_set_vf_vlan        = mlx4_en_set_vf_vlan,
2555         .ndo_set_vf_rate        = mlx4_en_set_vf_rate,
2556         .ndo_set_vf_spoofchk    = mlx4_en_set_vf_spoofchk,
2557         .ndo_set_vf_link_state  = mlx4_en_set_vf_link_state,
2558         .ndo_get_vf_stats       = mlx4_en_get_vf_stats,
2559         .ndo_get_vf_config      = mlx4_en_get_vf_config,
2560 #ifdef CONFIG_NET_POLL_CONTROLLER
2561         .ndo_poll_controller    = mlx4_en_netpoll,
2562 #endif
2563         .ndo_set_features       = mlx4_en_set_features,
2564         .ndo_fix_features       = mlx4_en_fix_features,
2565         .ndo_setup_tc           = mlx4_en_setup_tc,
2566 #ifdef CONFIG_RFS_ACCEL
2567         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2568 #endif
2569         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2570 #ifdef CONFIG_MLX4_EN_VXLAN
2571         .ndo_add_vxlan_port     = mlx4_en_add_vxlan_port,
2572         .ndo_del_vxlan_port     = mlx4_en_del_vxlan_port,
2573         .ndo_features_check     = mlx4_en_features_check,
2574 #endif
2575         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2576 };
2577
2578 struct mlx4_en_bond {
2579         struct work_struct work;
2580         struct mlx4_en_priv *priv;
2581         int is_bonded;
2582         struct mlx4_port_map port_map;
2583 };
2584
2585 static void mlx4_en_bond_work(struct work_struct *work)
2586 {
2587         struct mlx4_en_bond *bond = container_of(work,
2588                                                      struct mlx4_en_bond,
2589                                                      work);
2590         int err = 0;
2591         struct mlx4_dev *dev = bond->priv->mdev->dev;
2592
2593         if (bond->is_bonded) {
2594                 if (!mlx4_is_bonded(dev)) {
2595                         err = mlx4_bond(dev);
2596                         if (err)
2597                                 en_err(bond->priv, "Fail to bond device\n");
2598                 }
2599                 if (!err) {
2600                         err = mlx4_port_map_set(dev, &bond->port_map);
2601                         if (err)
2602                                 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n",
2603                                        bond->port_map.port1,
2604                                        bond->port_map.port2,
2605                                        err);
2606                 }
2607         } else if (mlx4_is_bonded(dev)) {
2608                 err = mlx4_unbond(dev);
2609                 if (err)
2610                         en_err(bond->priv, "Fail to unbond device\n");
2611         }
2612         dev_put(bond->priv->dev);
2613         kfree(bond);
2614 }
2615
2616 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded,
2617                                    u8 v2p_p1, u8 v2p_p2)
2618 {
2619         struct mlx4_en_bond *bond = NULL;
2620
2621         bond = kzalloc(sizeof(*bond), GFP_ATOMIC);
2622         if (!bond)
2623                 return -ENOMEM;
2624
2625         INIT_WORK(&bond->work, mlx4_en_bond_work);
2626         bond->priv = priv;
2627         bond->is_bonded = is_bonded;
2628         bond->port_map.port1 = v2p_p1;
2629         bond->port_map.port2 = v2p_p2;
2630         dev_hold(priv->dev);
2631         queue_work(priv->mdev->workqueue, &bond->work);
2632         return 0;
2633 }
2634
2635 int mlx4_en_netdev_event(struct notifier_block *this,
2636                          unsigned long event, void *ptr)
2637 {
2638         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
2639         u8 port = 0;
2640         struct mlx4_en_dev *mdev;
2641         struct mlx4_dev *dev;
2642         int i, num_eth_ports = 0;
2643         bool do_bond = true;
2644         struct mlx4_en_priv *priv;
2645         u8 v2p_port1 = 0;
2646         u8 v2p_port2 = 0;
2647
2648         if (!net_eq(dev_net(ndev), &init_net))
2649                 return NOTIFY_DONE;
2650
2651         mdev = container_of(this, struct mlx4_en_dev, nb);
2652         dev = mdev->dev;
2653
2654         /* Go into this mode only when two network devices set on two ports
2655          * of the same mlx4 device are slaves of the same bonding master
2656          */
2657         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
2658                 ++num_eth_ports;
2659                 if (!port && (mdev->pndev[i] == ndev))
2660                         port = i;
2661                 mdev->upper[i] = mdev->pndev[i] ?
2662                         netdev_master_upper_dev_get(mdev->pndev[i]) : NULL;
2663                 /* condition not met: network device is a slave */
2664                 if (!mdev->upper[i])
2665                         do_bond = false;
2666                 if (num_eth_ports < 2)
2667                         continue;
2668                 /* condition not met: same master */
2669                 if (mdev->upper[i] != mdev->upper[i-1])
2670                         do_bond = false;
2671         }
2672         /* condition not met: 2 salves */
2673         do_bond = (num_eth_ports ==  2) ? do_bond : false;
2674
2675         /* handle only events that come with enough info */
2676         if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
2677                 return NOTIFY_DONE;
2678
2679         priv = netdev_priv(ndev);
2680         if (do_bond) {
2681                 struct netdev_notifier_bonding_info *notifier_info = ptr;
2682                 struct netdev_bonding_info *bonding_info =
2683                         &notifier_info->bonding_info;
2684
2685                 /* required mode 1, 2 or 4 */
2686                 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
2687                     (bonding_info->master.bond_mode != BOND_MODE_XOR) &&
2688                     (bonding_info->master.bond_mode != BOND_MODE_8023AD))
2689                         do_bond = false;
2690
2691                 /* require exactly 2 slaves */
2692                 if (bonding_info->master.num_slaves != 2)
2693                         do_bond = false;
2694
2695                 /* calc v2p */
2696                 if (do_bond) {
2697                         if (bonding_info->master.bond_mode ==
2698                             BOND_MODE_ACTIVEBACKUP) {
2699                                 /* in active-backup mode virtual ports are
2700                                  * mapped to the physical port of the active
2701                                  * slave */
2702                                 if (bonding_info->slave.state ==
2703                                     BOND_STATE_BACKUP) {
2704                                         if (port == 1) {
2705                                                 v2p_port1 = 2;
2706                                                 v2p_port2 = 2;
2707                                         } else {
2708                                                 v2p_port1 = 1;
2709                                                 v2p_port2 = 1;
2710                                         }
2711                                 } else { /* BOND_STATE_ACTIVE */
2712                                         if (port == 1) {
2713                                                 v2p_port1 = 1;
2714                                                 v2p_port2 = 1;
2715                                         } else {
2716                                                 v2p_port1 = 2;
2717                                                 v2p_port2 = 2;
2718                                         }
2719                                 }
2720                         } else { /* Active-Active */
2721                                 /* in active-active mode a virtual port is
2722                                  * mapped to the native physical port if and only
2723                                  * if the physical port is up */
2724                                 __s8 link = bonding_info->slave.link;
2725
2726                                 if (port == 1)
2727                                         v2p_port2 = 2;
2728                                 else
2729                                         v2p_port1 = 1;
2730                                 if ((link == BOND_LINK_UP) ||
2731                                     (link == BOND_LINK_FAIL)) {
2732                                         if (port == 1)
2733                                                 v2p_port1 = 1;
2734                                         else
2735                                                 v2p_port2 = 2;
2736                                 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
2737                                         if (port == 1)
2738                                                 v2p_port1 = 2;
2739                                         else
2740                                                 v2p_port2 = 1;
2741                                 }
2742                         }
2743                 }
2744         }
2745
2746         mlx4_en_queue_bond_work(priv, do_bond,
2747                                 v2p_port1, v2p_port2);
2748
2749         return NOTIFY_DONE;
2750 }
2751
2752 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
2753                                      struct mlx4_en_stats_bitmap *stats_bitmap,
2754                                      u8 rx_ppp, u8 rx_pause,
2755                                      u8 tx_ppp, u8 tx_pause)
2756 {
2757         int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS;
2758
2759         if (!mlx4_is_slave(dev) &&
2760             (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
2761                 mutex_lock(&stats_bitmap->mutex);
2762                 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS);
2763
2764                 if (rx_ppp)
2765                         bitmap_set(stats_bitmap->bitmap, last_i,
2766                                    NUM_FLOW_PRIORITY_STATS_RX);
2767                 last_i += NUM_FLOW_PRIORITY_STATS_RX;
2768
2769                 if (rx_pause && !(rx_ppp))
2770                         bitmap_set(stats_bitmap->bitmap, last_i,
2771                                    NUM_FLOW_STATS_RX);
2772                 last_i += NUM_FLOW_STATS_RX;
2773
2774                 if (tx_ppp)
2775                         bitmap_set(stats_bitmap->bitmap, last_i,
2776                                    NUM_FLOW_PRIORITY_STATS_TX);
2777                 last_i += NUM_FLOW_PRIORITY_STATS_TX;
2778
2779                 if (tx_pause && !(tx_ppp))
2780                         bitmap_set(stats_bitmap->bitmap, last_i,
2781                                    NUM_FLOW_STATS_TX);
2782                 last_i += NUM_FLOW_STATS_TX;
2783
2784                 mutex_unlock(&stats_bitmap->mutex);
2785         }
2786 }
2787
2788 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
2789                               struct mlx4_en_stats_bitmap *stats_bitmap,
2790                               u8 rx_ppp, u8 rx_pause,
2791                               u8 tx_ppp, u8 tx_pause)
2792 {
2793         int last_i = 0;
2794
2795         mutex_init(&stats_bitmap->mutex);
2796         bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS);
2797
2798         if (mlx4_is_slave(dev)) {
2799                 bitmap_set(stats_bitmap->bitmap, last_i +
2800                                          MLX4_FIND_NETDEV_STAT(rx_packets), 1);
2801                 bitmap_set(stats_bitmap->bitmap, last_i +
2802                                          MLX4_FIND_NETDEV_STAT(tx_packets), 1);
2803                 bitmap_set(stats_bitmap->bitmap, last_i +
2804                                          MLX4_FIND_NETDEV_STAT(rx_bytes), 1);
2805                 bitmap_set(stats_bitmap->bitmap, last_i +
2806                                          MLX4_FIND_NETDEV_STAT(tx_bytes), 1);
2807                 bitmap_set(stats_bitmap->bitmap, last_i +
2808                                          MLX4_FIND_NETDEV_STAT(rx_dropped), 1);
2809                 bitmap_set(stats_bitmap->bitmap, last_i +
2810                                          MLX4_FIND_NETDEV_STAT(tx_dropped), 1);
2811         } else {
2812                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS);
2813         }
2814         last_i += NUM_MAIN_STATS;
2815
2816         bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS);
2817         last_i += NUM_PORT_STATS;
2818
2819         if (mlx4_is_master(dev))
2820                 bitmap_set(stats_bitmap->bitmap, last_i,
2821                            NUM_PF_STATS);
2822         last_i += NUM_PF_STATS;
2823
2824         mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
2825                                         rx_ppp, rx_pause,
2826                                         tx_ppp, tx_pause);
2827         last_i += NUM_FLOW_STATS;
2828
2829         if (!mlx4_is_slave(dev))
2830                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS);
2831 }
2832
2833 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2834                         struct mlx4_en_port_profile *prof)
2835 {
2836         struct net_device *dev;
2837         struct mlx4_en_priv *priv;
2838         int i;
2839         int err;
2840
2841         dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2842                                  MAX_TX_RINGS, MAX_RX_RINGS);
2843         if (dev == NULL)
2844                 return -ENOMEM;
2845
2846         netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2847         netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2848
2849         SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev);
2850         dev->dev_port = port - 1;
2851
2852         /*
2853          * Initialize driver private data
2854          */
2855
2856         priv = netdev_priv(dev);
2857         memset(priv, 0, sizeof(struct mlx4_en_priv));
2858         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
2859         spin_lock_init(&priv->stats_lock);
2860         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2861         INIT_WORK(&priv->restart_task, mlx4_en_restart);
2862         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2863         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2864         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2865 #ifdef CONFIG_MLX4_EN_VXLAN
2866         INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads);
2867         INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads);
2868 #endif
2869 #ifdef CONFIG_RFS_ACCEL
2870         INIT_LIST_HEAD(&priv->filters);
2871         spin_lock_init(&priv->filters_lock);
2872 #endif
2873
2874         priv->dev = dev;
2875         priv->mdev = mdev;
2876         priv->ddev = &mdev->pdev->dev;
2877         priv->prof = prof;
2878         priv->port = port;
2879         priv->port_up = false;
2880         priv->flags = prof->flags;
2881         priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
2882         priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2883                         MLX4_WQE_CTRL_SOLICITED);
2884         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2885         priv->tx_ring_num = prof->tx_ring_num;
2886         priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
2887         netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
2888
2889         priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
2890                                 GFP_KERNEL);
2891         if (!priv->tx_ring) {
2892                 err = -ENOMEM;
2893                 goto out;
2894         }
2895         priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
2896                               GFP_KERNEL);
2897         if (!priv->tx_cq) {
2898                 err = -ENOMEM;
2899                 goto out;
2900         }
2901         priv->rx_ring_num = prof->rx_ring_num;
2902         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2903         priv->cqe_size = mdev->dev->caps.cqe_size;
2904         priv->mac_index = -1;
2905         priv->msg_enable = MLX4_EN_MSG_LEVEL;
2906 #ifdef CONFIG_MLX4_EN_DCB
2907         if (!mlx4_is_slave(priv->mdev->dev)) {
2908                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
2909                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2910                 } else {
2911                         en_info(priv, "enabling only PFC DCB ops\n");
2912                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2913                 }
2914         }
2915 #endif
2916
2917         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2918                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2919
2920         /* Query for default mac and max mtu */
2921         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2922
2923         if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
2924             MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
2925                 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
2926
2927         /* Set default MAC */
2928         dev->addr_len = ETH_ALEN;
2929         mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
2930         if (!is_valid_ether_addr(dev->dev_addr)) {
2931                 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
2932                        priv->port, dev->dev_addr);
2933                 err = -EINVAL;
2934                 goto out;
2935         } else if (mlx4_is_slave(priv->mdev->dev) &&
2936                    (priv->mdev->dev->port_random_macs & 1 << priv->port)) {
2937                 /* Random MAC was assigned in mlx4_slave_cap
2938                  * in mlx4_core module
2939                  */
2940                 dev->addr_assign_type |= NET_ADDR_RANDOM;
2941                 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
2942         }
2943
2944         memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
2945
2946         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2947                                           DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2948         err = mlx4_en_alloc_resources(priv);
2949         if (err)
2950                 goto out;
2951
2952         /* Initialize time stamping config */
2953         priv->hwtstamp_config.flags = 0;
2954         priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
2955         priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
2956
2957         /* Allocate page for receive rings */
2958         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2959                                 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2960         if (err) {
2961                 en_err(priv, "Failed to allocate page for rx qps\n");
2962                 goto out;
2963         }
2964         priv->allocated = 1;
2965
2966         /*
2967          * Initialize netdev entry points
2968          */
2969         if (mlx4_is_master(priv->mdev->dev))
2970                 dev->netdev_ops = &mlx4_netdev_ops_master;
2971         else
2972                 dev->netdev_ops = &mlx4_netdev_ops;
2973         dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
2974         netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
2975         netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
2976
2977         dev->ethtool_ops = &mlx4_en_ethtool_ops;
2978
2979         /*
2980          * Set driver features
2981          */
2982         dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2983         if (mdev->LSO_support)
2984                 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2985
2986         dev->vlan_features = dev->hw_features;
2987
2988         dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
2989         dev->features = dev->hw_features | NETIF_F_HIGHDMA |
2990                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
2991                         NETIF_F_HW_VLAN_CTAG_FILTER;
2992         dev->hw_features |= NETIF_F_LOOPBACK |
2993                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
2994
2995         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) {
2996                 dev->features |= NETIF_F_HW_VLAN_STAG_RX |
2997                         NETIF_F_HW_VLAN_STAG_FILTER;
2998                 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX;
2999         }
3000
3001         if (mlx4_is_slave(mdev->dev)) {
3002                 int phv;
3003
3004                 err = get_phv_bit(mdev->dev, port, &phv);
3005                 if (!err && phv) {
3006                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3007                         priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
3008                 }
3009         } else {
3010                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN &&
3011                     !(mdev->dev->caps.flags2 &
3012                       MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
3013                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3014         }
3015
3016         if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
3017                 dev->hw_features |= NETIF_F_RXFCS;
3018
3019         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
3020                 dev->hw_features |= NETIF_F_RXALL;
3021
3022         if (mdev->dev->caps.steering_mode ==
3023             MLX4_STEERING_MODE_DEVICE_MANAGED &&
3024             mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
3025                 dev->hw_features |= NETIF_F_NTUPLE;
3026
3027         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
3028                 dev->priv_flags |= IFF_UNICAST_FLT;
3029
3030         /* Setting a default hash function value */
3031         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
3032                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3033         } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
3034                 priv->rss_hash_fn = ETH_RSS_HASH_XOR;
3035         } else {
3036                 en_warn(priv,
3037                         "No RSS hash capabilities exposed, using Toeplitz\n");
3038                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3039         }
3040
3041         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3042                 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
3043                 dev->features    |= NETIF_F_GSO_UDP_TUNNEL;
3044         }
3045
3046         mdev->pndev[port] = dev;
3047         mdev->upper[port] = NULL;
3048
3049         netif_carrier_off(dev);
3050         mlx4_en_set_default_moderation(priv);
3051
3052         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
3053         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
3054
3055         mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
3056
3057         /* Configure port */
3058         mlx4_en_calc_rx_buf(dev);
3059         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
3060                                     priv->rx_skb_size + ETH_FCS_LEN,
3061                                     prof->tx_pause, prof->tx_ppp,
3062                                     prof->rx_pause, prof->rx_ppp);
3063         if (err) {
3064                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
3065                        priv->port, err);
3066                 goto out;
3067         }
3068
3069         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3070                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
3071                 if (err) {
3072                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
3073                                err);
3074                         goto out;
3075                 }
3076         }
3077
3078         /* Init port */
3079         en_warn(priv, "Initializing port\n");
3080         err = mlx4_INIT_PORT(mdev->dev, priv->port);
3081         if (err) {
3082                 en_err(priv, "Failed Initializing port\n");
3083                 goto out;
3084         }
3085         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
3086
3087         /* Initialize time stamp mechanism */
3088         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
3089                 mlx4_en_init_timestamp(mdev);
3090
3091         queue_delayed_work(mdev->workqueue, &priv->service_task,
3092                            SERVICE_TASK_DELAY);
3093
3094         mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap,
3095                                  mdev->profile.prof[priv->port].rx_ppp,
3096                                  mdev->profile.prof[priv->port].rx_pause,
3097                                  mdev->profile.prof[priv->port].tx_ppp,
3098                                  mdev->profile.prof[priv->port].tx_pause);
3099
3100         err = register_netdev(dev);
3101         if (err) {
3102                 en_err(priv, "Netdev registration failed for port %d\n", port);
3103                 goto out;
3104         }
3105
3106         priv->registered = 1;
3107
3108         return 0;
3109
3110 out:
3111         mlx4_en_destroy_netdev(dev);
3112         return err;
3113 }
3114
3115 int mlx4_en_reset_config(struct net_device *dev,
3116                          struct hwtstamp_config ts_config,
3117                          netdev_features_t features)
3118 {
3119         struct mlx4_en_priv *priv = netdev_priv(dev);
3120         struct mlx4_en_dev *mdev = priv->mdev;
3121         int port_up = 0;
3122         int err = 0;
3123
3124         if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
3125             priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
3126             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3127             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
3128                 return 0; /* Nothing to change */
3129
3130         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3131             (features & NETIF_F_HW_VLAN_CTAG_RX) &&
3132             (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
3133                 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
3134                 return -EINVAL;
3135         }
3136
3137         mutex_lock(&mdev->state_lock);
3138         if (priv->port_up) {
3139                 port_up = 1;
3140                 mlx4_en_stop_port(dev, 1);
3141         }
3142
3143         mlx4_en_free_resources(priv);
3144
3145         en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n",
3146                 ts_config.rx_filter, !!(features & NETIF_F_HW_VLAN_CTAG_RX));
3147
3148         priv->hwtstamp_config.tx_type = ts_config.tx_type;
3149         priv->hwtstamp_config.rx_filter = ts_config.rx_filter;
3150
3151         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
3152                 if (features & NETIF_F_HW_VLAN_CTAG_RX)
3153                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3154                 else
3155                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3156         } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
3157                 /* RX time-stamping is OFF, update the RX vlan offload
3158                  * to the latest wanted state
3159                  */
3160                 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
3161                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3162                 else
3163                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3164         }
3165
3166         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
3167                 if (features & NETIF_F_RXFCS)
3168                         dev->features |= NETIF_F_RXFCS;
3169                 else
3170                         dev->features &= ~NETIF_F_RXFCS;
3171         }
3172
3173         /* RX vlan offload and RX time-stamping can't co-exist !
3174          * Regardless of the caller's choice,
3175          * Turn Off RX vlan offload in case of time-stamping is ON
3176          */
3177         if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
3178                 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
3179                         en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
3180                 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3181         }
3182
3183         err = mlx4_en_alloc_resources(priv);
3184         if (err) {
3185                 en_err(priv, "Failed reallocating port resources\n");
3186                 goto out;
3187         }
3188         if (port_up) {
3189                 err = mlx4_en_start_port(dev);
3190                 if (err)
3191                         en_err(priv, "Failed starting port\n");
3192         }
3193
3194         if (!err)
3195                 err = mlx4_en_moderation_update(priv);
3196 out:
3197         mutex_unlock(&mdev->state_lock);
3198         netdev_features_change(dev);
3199         return err;
3200 }