Pileus Git - ~andy/linux/blob - 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
  42 #include <linux/mlx4/driver.h>
  43 #include <linux/mlx4/device.h>
  44 #include <linux/mlx4/cmd.h>
  45 #include <linux/mlx4/cq.h>
  46
  47 #include "mlx4_en.h"
  48 #include "en_port.h"
  49
  50 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
  51 {
  52         struct mlx4_en_priv *priv = netdev_priv(dev);
  53         int i;
  54         unsigned int offset = 0;
  55
  56         if (up && up != MLX4_EN_NUM_UP)
  57                 return -EINVAL;
  58
  59         netdev_set_num_tc(dev, up);
  60
  61         /* Partition Tx queues evenly amongst UP's */
  62         for (i = 0; i < up; i++) {
  63                 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
  64                 offset += priv->num_tx_rings_p_up;
  65         }
  66
  67         return 0;
  68 }
  69
  70 #ifdef CONFIG_RFS_ACCEL
  71
  72 struct mlx4_en_filter {
  73         struct list_head next;
  74         struct work_struct work;
  75
  76         __be32 src_ip;
  77         __be32 dst_ip;
  78         __be16 src_port;
  79         __be16 dst_port;
  80
  81         int rxq_index;
  82         struct mlx4_en_priv *priv;
  83         u32 flow_id;                    /* RFS infrastructure id */
  84         int id;                         /* mlx4_en driver id */
  85         u64 reg_id;                     /* Flow steering API id */
  86         u8 activated;                   /* Used to prevent expiry before filter
  87                                          * is attached
  88                                          */
  89         struct hlist_node filter_chain;
  90 };
  91
  92 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
  93
  94 static void mlx4_en_filter_work(struct work_struct *work)
  95 {
  96         struct mlx4_en_filter *filter = container_of(work,
  97                                                      struct mlx4_en_filter,
  98                                                      work);
  99         struct mlx4_en_priv *priv = filter->priv;
 100         struct mlx4_spec_list spec_tcp = {
 101                 .id = MLX4_NET_TRANS_RULE_ID_TCP,
 102                 {
 103                         .tcp_udp = {
 104                                 .dst_port = filter->dst_port,
 105                                 .dst_port_msk = (__force __be16)-1,
 106                                 .src_port = filter->src_port,
 107                                 .src_port_msk = (__force __be16)-1,
 108                         },
 109                 },
 110         };
 111         struct mlx4_spec_list spec_ip = {
 112                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 113                 {
 114                         .ipv4 = {
 115                                 .dst_ip = filter->dst_ip,
 116                                 .dst_ip_msk = (__force __be32)-1,
 117                                 .src_ip = filter->src_ip,
 118                                 .src_ip_msk = (__force __be32)-1,
 119                         },
 120                 },
 121         };
 122         struct mlx4_spec_list spec_eth = {
 123                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 124         };
 125         struct mlx4_net_trans_rule rule = {
 126                 .list = LIST_HEAD_INIT(rule.list),
 127                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 128                 .exclusive = 1,
 129                 .allow_loopback = 1,
 130                 .promisc_mode = MLX4_FS_PROMISC_NONE,
 131                 .port = priv->port,
 132                 .priority = MLX4_DOMAIN_RFS,
 133         };
 134         int rc;
 135         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 136
 137         list_add_tail(&spec_eth.list, &rule.list);
 138         list_add_tail(&spec_ip.list, &rule.list);
 139         list_add_tail(&spec_tcp.list, &rule.list);
 140
 141         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 142         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 143         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 144
 145         filter->activated = 0;
 146
 147         if (filter->reg_id) {
 148                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 149                 if (rc && rc != -ENOENT)
 150                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 151         }
 152
 153         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 154         if (rc)
 155                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 156
 157         mlx4_en_filter_rfs_expire(priv);
 158
 159         filter->activated = 1;
 160 }
 161
 162 static inline struct hlist_head *
 163 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 164                    __be16 src_port, __be16 dst_port)
 165 {
 166         unsigned long l;
 167         int bucket_idx;
 168
 169         l = (__force unsigned long)src_port |
 170             ((__force unsigned long)dst_port << 2);
 171         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 172
 173         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 174
 175         return &priv->filter_hash[bucket_idx];
 176 }
 177
 178 static struct mlx4_en_filter *
 179 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 180                      __be32 dst_ip, __be16 src_port, __be16 dst_port,
 181                      u32 flow_id)
 182 {
 183         struct mlx4_en_filter *filter = NULL;
 184
 185         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 186         if (!filter)
 187                 return NULL;
 188
 189         filter->priv = priv;
 190         filter->rxq_index = rxq_index;
 191         INIT_WORK(&filter->work, mlx4_en_filter_work);
 192
 193         filter->src_ip = src_ip;
 194         filter->dst_ip = dst_ip;
 195         filter->src_port = src_port;
 196         filter->dst_port = dst_port;
 197
 198         filter->flow_id = flow_id;
 199
 200         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 201
 202         list_add_tail(&filter->next, &priv->filters);
 203         hlist_add_head(&filter->filter_chain,
 204                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 205                                           dst_port));
 206
 207         return filter;
 208 }
 209
 210 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 211 {
 212         struct mlx4_en_priv *priv = filter->priv;
 213         int rc;
 214
 215         list_del(&filter->next);
 216
 217         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 218         if (rc && rc != -ENOENT)
 219                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 220
 221         kfree(filter);
 222 }
 223
 224 static inline struct mlx4_en_filter *
 225 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 226                     __be16 src_port, __be16 dst_port)
 227 {
 228         struct hlist_node *elem;
 229         struct mlx4_en_filter *filter;
 230         struct mlx4_en_filter *ret = NULL;
 231
 232         hlist_for_each_entry(filter, elem,
 233                              filter_hash_bucket(priv, src_ip, dst_ip,
 234                                                 src_port, dst_port),
 235                              filter_chain) {
 236                 if (filter->src_ip == src_ip &&
 237                     filter->dst_ip == dst_ip &&
 238                     filter->src_port == src_port &&
 239                     filter->dst_port == dst_port) {
 240                         ret = filter;
 241                         break;
 242                 }
 243         }
 244
 245         return ret;
 246 }
 247
 248 static int
 249 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 250                    u16 rxq_index, u32 flow_id)
 251 {
 252         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 253         struct mlx4_en_filter *filter;
 254         const struct iphdr *ip;
 255         const __be16 *ports;
 256         __be32 src_ip;
 257         __be32 dst_ip;
 258         __be16 src_port;
 259         __be16 dst_port;
 260         int nhoff = skb_network_offset(skb);
 261         int ret = 0;
 262
 263         if (skb->protocol != htons(ETH_P_IP))
 264                 return -EPROTONOSUPPORT;
 265
 266         ip = (const struct iphdr *)(skb->data + nhoff);
 267         if (ip_is_fragment(ip))
 268                 return -EPROTONOSUPPORT;
 269
 270         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 271
 272         src_ip = ip->saddr;
 273         dst_ip = ip->daddr;
 274         src_port = ports[0];
 275         dst_port = ports[1];
 276
 277         if (ip->protocol != IPPROTO_TCP)
 278                 return -EPROTONOSUPPORT;
 279
 280         spin_lock_bh(&priv->filters_lock);
 281         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, src_port, dst_port);
 282         if (filter) {
 283                 if (filter->rxq_index == rxq_index)
 284                         goto out;
 285
 286                 filter->rxq_index = rxq_index;
 287         } else {
 288                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 289                                               src_ip, dst_ip,
 290                                               src_port, dst_port, flow_id);
 291                 if (!filter) {
 292                         ret = -ENOMEM;
 293                         goto err;
 294                 }
 295         }
 296
 297         queue_work(priv->mdev->workqueue, &filter->work);
 298
 299 out:
 300         ret = filter->id;
 301 err:
 302         spin_unlock_bh(&priv->filters_lock);
 303
 304         return ret;
 305 }
 306
 307 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv,
 308                              struct mlx4_en_rx_ring *rx_ring)
 309 {
 310         struct mlx4_en_filter *filter, *tmp;
 311         LIST_HEAD(del_list);
 312
 313         spin_lock_bh(&priv->filters_lock);
 314         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 315                 list_move(&filter->next, &del_list);
 316                 hlist_del(&filter->filter_chain);
 317         }
 318         spin_unlock_bh(&priv->filters_lock);
 319
 320         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 321                 cancel_work_sync(&filter->work);
 322                 mlx4_en_filter_free(filter);
 323         }
 324 }
 325
 326 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 327 {
 328         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 329         LIST_HEAD(del_list);
 330         int i = 0;
 331
 332         spin_lock_bh(&priv->filters_lock);
 333         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 334                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 335                         break;
 336
 337                 if (filter->activated &&
 338                     !work_pending(&filter->work) &&
 339                     rps_may_expire_flow(priv->dev,
 340                                         filter->rxq_index, filter->flow_id,
 341                                         filter->id)) {
 342                         list_move(&filter->next, &del_list);
 343                         hlist_del(&filter->filter_chain);
 344                 } else
 345                         last_filter = filter;
 346
 347                 i++;
 348         }
 349
 350         if (last_filter && (&last_filter->next != priv->filters.next))
 351                 list_move(&priv->filters, &last_filter->next);
 352
 353         spin_unlock_bh(&priv->filters_lock);
 354
 355         list_for_each_entry_safe(filter, tmp, &del_list, next)
 356                 mlx4_en_filter_free(filter);
 357 }
 358 #endif
 359
 360 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
 361 {
 362         struct mlx4_en_priv *priv = netdev_priv(dev);
 363         struct mlx4_en_dev *mdev = priv->mdev;
 364         int err;
 365         int idx;
 366
 367         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 368
 369         set_bit(vid, priv->active_vlans);
 370
 371         /* Add VID to port VLAN filter */
 372         mutex_lock(&mdev->state_lock);
 373         if (mdev->device_up && priv->port_up) {
 374                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 375                 if (err)
 376                         en_err(priv, "Failed configuring VLAN filter\n");
 377         }
 378         if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
 379                 en_err(priv, "failed adding vlan %d\n", vid);
 380         mutex_unlock(&mdev->state_lock);
 381
 382         return 0;
 383 }
 384
 385 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
 386 {
 387         struct mlx4_en_priv *priv = netdev_priv(dev);
 388         struct mlx4_en_dev *mdev = priv->mdev;
 389         int err;
 390         int idx;
 391
 392         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 393
 394         clear_bit(vid, priv->active_vlans);
 395
 396         /* Remove VID from port VLAN filter */
 397         mutex_lock(&mdev->state_lock);
 398         if (!mlx4_find_cached_vlan(mdev->dev, priv->port, vid, &idx))
 399                 mlx4_unregister_vlan(mdev->dev, priv->port, idx);
 400         else
 401                 en_err(priv, "could not find vid %d in cache\n", vid);
 402
 403         if (mdev->device_up && priv->port_up) {
 404                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 405                 if (err)
 406                         en_err(priv, "Failed configuring VLAN filter\n");
 407         }
 408         mutex_unlock(&mdev->state_lock);
 409
 410         return 0;
 411 }
 412
 413 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
 414 {
 415         unsigned int i;
 416         for (i = ETH_ALEN - 1; i; --i) {
 417                 dst_mac[i] = src_mac & 0xff;
 418                 src_mac >>= 8;
 419         }
 420         memset(&dst_mac[ETH_ALEN], 0, 2);
 421 }
 422
 423 u64 mlx4_en_mac_to_u64(u8 *addr)
 424 {
 425         u64 mac = 0;
 426         int i;
 427
 428         for (i = 0; i < ETH_ALEN; i++) {
 429                 mac <<= 8;
 430                 mac |= addr[i];
 431         }
 432         return mac;
 433 }
 434
 435 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 436 {
 437         struct mlx4_en_priv *priv = netdev_priv(dev);
 438         struct mlx4_en_dev *mdev = priv->mdev;
 439         struct sockaddr *saddr = addr;
 440
 441         if (!is_valid_ether_addr(saddr->sa_data))
 442                 return -EADDRNOTAVAIL;
 443
 444         memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
 445         queue_work(mdev->workqueue, &priv->mac_task);
 446         return 0;
 447 }
 448
 449 static void mlx4_en_do_set_mac(struct work_struct *work)
 450 {
 451         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
 452                                                  mac_task);
 453         struct mlx4_en_dev *mdev = priv->mdev;
 454         int err = 0;
 455
 456         mutex_lock(&mdev->state_lock);
 457         if (priv->port_up) {
 458                 /* Remove old MAC and insert the new one */
 459                 u64 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
 460                 err = mlx4_replace_mac(mdev->dev, priv->port,
 461                                        priv->base_qpn, mac);
 462                 if (err)
 463                         en_err(priv, "Failed changing HW MAC address\n");
 464                 memcpy(priv->prev_mac, priv->dev->dev_addr,
 465                        sizeof(priv->prev_mac));
 466         } else
 467                 en_dbg(HW, priv, "Port is down while "
 468                                  "registering mac, exiting...\n");
 469
 470         mutex_unlock(&mdev->state_lock);
 471 }
 472
 473 static void mlx4_en_clear_list(struct net_device *dev)
 474 {
 475         struct mlx4_en_priv *priv = netdev_priv(dev);
 476         struct mlx4_en_mc_list *tmp, *mc_to_del;
 477
 478         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 479                 list_del(&mc_to_del->list);
 480                 kfree(mc_to_del);
 481         }
 482 }
 483
 484 static void mlx4_en_cache_mclist(struct net_device *dev)
 485 {
 486         struct mlx4_en_priv *priv = netdev_priv(dev);
 487         struct netdev_hw_addr *ha;
 488         struct mlx4_en_mc_list *tmp;
 489
 490         mlx4_en_clear_list(dev);
 491         netdev_for_each_mc_addr(ha, dev) {
 492                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 493                 if (!tmp) {
 494                         en_err(priv, "failed to allocate multicast list\n");
 495                         mlx4_en_clear_list(dev);
 496                         return;
 497                 }
 498                 memcpy(tmp->addr, ha->addr, ETH_ALEN);
 499                 list_add_tail(&tmp->list, &priv->mc_list);
 500         }
 501 }
 502
 503 static void update_mclist_flags(struct mlx4_en_priv *priv,
 504                                 struct list_head *dst,
 505                                 struct list_head *src)
 506 {
 507         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 508         bool found;
 509
 510         /* Find all the entries that should be removed from dst,
 511          * These are the entries that are not found in src
 512          */
 513         list_for_each_entry(dst_tmp, dst, list) {
 514                 found = false;
 515                 list_for_each_entry(src_tmp, src, list) {
 516                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 517                                 found = true;
 518                                 break;
 519                         }
 520                 }
 521                 if (!found)
 522                         dst_tmp->action = MCLIST_REM;
 523         }
 524
 525         /* Add entries that exist in src but not in dst
 526          * mark them as need to add
 527          */
 528         list_for_each_entry(src_tmp, src, list) {
 529                 found = false;
 530                 list_for_each_entry(dst_tmp, dst, list) {
 531                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 532                                 dst_tmp->action = MCLIST_NONE;
 533                                 found = true;
 534                                 break;
 535                         }
 536                 }
 537                 if (!found) {
 538                         new_mc = kmalloc(sizeof(struct mlx4_en_mc_list),
 539                                          GFP_KERNEL);
 540                         if (!new_mc) {
 541                                 en_err(priv, "Failed to allocate current multicast list\n");
 542                                 return;
 543                         }
 544                         memcpy(new_mc, src_tmp,
 545                                sizeof(struct mlx4_en_mc_list));
 546                         new_mc->action = MCLIST_ADD;
 547                         list_add_tail(&new_mc->list, dst);
 548                 }
 549         }
 550 }
 551
 552 static void mlx4_en_set_multicast(struct net_device *dev)
 553 {
 554         struct mlx4_en_priv *priv = netdev_priv(dev);
 555
 556         if (!priv->port_up)
 557                 return;
 558
 559         queue_work(priv->mdev->workqueue, &priv->mcast_task);
 560 }
 561
 562 static void mlx4_en_do_set_multicast(struct work_struct *work)
 563 {
 564         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
 565                                                  mcast_task);
 566         struct mlx4_en_dev *mdev = priv->mdev;
 567         struct net_device *dev = priv->dev;
 568         struct mlx4_en_mc_list *mclist, *tmp;
 569         u64 mcast_addr = 0;
 570         u8 mc_list[16] = {0};
 571         int err = 0;
 572
 573         mutex_lock(&mdev->state_lock);
 574         if (!mdev->device_up) {
 575                 en_dbg(HW, priv, "Card is not up, "
 576                                  "ignoring multicast change.\n");
 577                 goto out;
 578         }
 579         if (!priv->port_up) {
 580                 en_dbg(HW, priv, "Port is down, "
 581                                  "ignoring  multicast change.\n");
 582                 goto out;
 583         }
 584
 585         if (!netif_carrier_ok(dev)) {
 586                 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
 587                         if (priv->port_state.link_state) {
 588                                 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
 589                                 netif_carrier_on(dev);
 590                                 en_dbg(LINK, priv, "Link Up\n");
 591                         }
 592                 }
 593         }
 594
 595         /*
 596          * Promsicuous mode: disable all filters
 597          */
 598
 599         if (dev->flags & IFF_PROMISC) {
 600                 if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 601                         if (netif_msg_rx_status(priv))
 602                                 en_warn(priv, "Entering promiscuous mode\n");
 603                         priv->flags |= MLX4_EN_FLAG_PROMISC;
 604
 605                         /* Enable promiscouos mode */
 606                         switch (mdev->dev->caps.steering_mode) {
 607                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 608                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
 609                                                                   priv->port,
 610                                                                   priv->base_qpn,
 611                                                                   MLX4_FS_PROMISC_UPLINK);
 612                                 if (err)
 613                                         en_err(priv, "Failed enabling promiscuous mode\n");
 614                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 615                                 break;
 616
 617                         case MLX4_STEERING_MODE_B0:
 618                                 err = mlx4_unicast_promisc_add(mdev->dev,
 619                                                                priv->base_qpn,
 620                                                                priv->port);
 621                                 if (err)
 622                                         en_err(priv, "Failed enabling unicast promiscuous mode\n");
 623
 624                                 /* Add the default qp number as multicast
 625                                  * promisc
 626                                  */
 627                                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 628                                         err = mlx4_multicast_promisc_add(mdev->dev,
 629                                                                          priv->base_qpn,
 630                                                                          priv->port);
 631                                         if (err)
 632                                                 en_err(priv, "Failed enabling multicast promiscuous mode\n");
 633                                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 634                                 }
 635                                 break;
 636
 637                         case MLX4_STEERING_MODE_A0:
 638                                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 639                                                              priv->port,
 640                                                              priv->base_qpn,
 641                                                              1);
 642                                 if (err)
 643                                         en_err(priv, "Failed enabling promiscuous mode\n");
 644                                 break;
 645                         }
 646
 647                         /* Disable port multicast filter (unconditionally) */
 648                         err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 649                                                   0, MLX4_MCAST_DISABLE);
 650                         if (err)
 651                                 en_err(priv, "Failed disabling "
 652                                              "multicast filter\n");
 653
 654                         /* Disable port VLAN filter */
 655                         err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 656                         if (err)
 657                                 en_err(priv, "Failed disabling VLAN filter\n");
 658                 }
 659                 goto out;
 660         }
 661
 662         /*
 663          * Not in promiscuous mode
 664          */
 665
 666         if (priv->flags & MLX4_EN_FLAG_PROMISC) {
 667                 if (netif_msg_rx_status(priv))
 668                         en_warn(priv, "Leaving promiscuous mode\n");
 669                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 670
 671                 /* Disable promiscouos mode */
 672                 switch (mdev->dev->caps.steering_mode) {
 673                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 674                         err = mlx4_flow_steer_promisc_remove(mdev->dev,
 675                                                              priv->port,
 676                                                              MLX4_FS_PROMISC_UPLINK);
 677                         if (err)
 678                                 en_err(priv, "Failed disabling promiscuous mode\n");
 679                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 680                         break;
 681
 682                 case MLX4_STEERING_MODE_B0:
 683                         err = mlx4_unicast_promisc_remove(mdev->dev,
 684                                                           priv->base_qpn,
 685                                                           priv->port);
 686                         if (err)
 687                                 en_err(priv, "Failed disabling unicast promiscuous mode\n");
 688                         /* Disable Multicast promisc */
 689                         if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 690                                 err = mlx4_multicast_promisc_remove(mdev->dev,
 691                                                                     priv->base_qpn,
 692                                                                     priv->port);
 693                                 if (err)
 694                                         en_err(priv, "Failed disabling multicast promiscuous mode\n");
 695                                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 696                         }
 697                         break;
 698
 699                 case MLX4_STEERING_MODE_A0:
 700                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 701                                                      priv->port,
 702                                                      priv->base_qpn, 0);
 703                         if (err)
 704                                 en_err(priv, "Failed disabling promiscuous mode\n");
 705                         break;
 706                 }
 707
 708                 /* Enable port VLAN filter */
 709                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 710                 if (err)
 711                         en_err(priv, "Failed enabling VLAN filter\n");
 712         }
 713
 714         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 715         if (dev->flags & IFF_ALLMULTI) {
 716                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 717                                           0, MLX4_MCAST_DISABLE);
 718                 if (err)
 719                         en_err(priv, "Failed disabling multicast filter\n");
 720
 721                 /* Add the default qp number as multicast promisc */
 722                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 723                         switch (mdev->dev->caps.steering_mode) {
 724                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 725                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
 726                                                                   priv->port,
 727                                                                   priv->base_qpn,
 728                                                                   MLX4_FS_PROMISC_ALL_MULTI);
 729                                 break;
 730
 731                         case MLX4_STEERING_MODE_B0:
 732                                 err = mlx4_multicast_promisc_add(mdev->dev,
 733                                                                  priv->base_qpn,
 734                                                                  priv->port);
 735                                 break;
 736
 737                         case MLX4_STEERING_MODE_A0:
 738                                 break;
 739                         }
 740                         if (err)
 741                                 en_err(priv, "Failed entering multicast promisc mode\n");
 742                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 743                 }
 744         } else {
 745                 /* Disable Multicast promisc */
 746                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 747                         switch (mdev->dev->caps.steering_mode) {
 748                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 749                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 750                                                                      priv->port,
 751                                                                      MLX4_FS_PROMISC_ALL_MULTI);
 752                                 break;
 753
 754                         case MLX4_STEERING_MODE_B0:
 755                                 err = mlx4_multicast_promisc_remove(mdev->dev,
 756                                                                     priv->base_qpn,
 757                                                                     priv->port);
 758                                 break;
 759
 760                         case MLX4_STEERING_MODE_A0:
 761                                 break;
 762                         }
 763                         if (err)
 764                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 765                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 766                 }
 767
 768                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 769                                           0, MLX4_MCAST_DISABLE);
 770                 if (err)
 771                         en_err(priv, "Failed disabling multicast filter\n");
 772
 773                 /* Flush mcast filter and init it with broadcast address */
 774                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
 775                                     1, MLX4_MCAST_CONFIG);
 776
 777                 /* Update multicast list - we cache all addresses so they won't
 778                  * change while HW is updated holding the command semaphor */
 779                 netif_addr_lock_bh(dev);
 780                 mlx4_en_cache_mclist(dev);
 781                 netif_addr_unlock_bh(dev);
 782                 list_for_each_entry(mclist, &priv->mc_list, list) {
 783                         mcast_addr = mlx4_en_mac_to_u64(mclist->addr);
 784                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
 785                                             mcast_addr, 0, MLX4_MCAST_CONFIG);
 786                 }
 787                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 788                                           0, MLX4_MCAST_ENABLE);
 789                 if (err)
 790                         en_err(priv, "Failed enabling multicast filter\n");
 791
 792                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
 793                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
 794                         if (mclist->action == MCLIST_REM) {
 795                                 /* detach this address and delete from list */
 796                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
 797                                 mc_list[5] = priv->port;
 798                                 err = mlx4_multicast_detach(mdev->dev,
 799                                                             &priv->rss_map.indir_qp,
 800                                                             mc_list,
 801                                                             MLX4_PROT_ETH,
 802                                                             mclist->reg_id);
 803                                 if (err)
 804                                         en_err(priv, "Fail to detach multicast address\n");
 805
 806                                 /* remove from list */
 807                                 list_del(&mclist->list);
 808                                 kfree(mclist);
 809                         } else if (mclist->action == MCLIST_ADD) {
 810                                 /* attach the address */
 811                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
 812                                 /* needed for B0 steering support */
 813                                 mc_list[5] = priv->port;
 814                                 err = mlx4_multicast_attach(mdev->dev,
 815                                                             &priv->rss_map.indir_qp,
 816                                                             mc_list,
 817                                                             priv->port, 0,
 818                                                             MLX4_PROT_ETH,
 819                                                             &mclist->reg_id);
 820                                 if (err)
 821                                         en_err(priv, "Fail to attach multicast address\n");
 822
 823                         }
 824                 }
 825         }
 826 out:
 827         mutex_unlock(&mdev->state_lock);
 828 }
 829
 830 #ifdef CONFIG_NET_POLL_CONTROLLER
 831 static void mlx4_en_netpoll(struct net_device *dev)
 832 {
 833         struct mlx4_en_priv *priv = netdev_priv(dev);
 834         struct mlx4_en_cq *cq;
 835         unsigned long flags;
 836         int i;
 837
 838         for (i = 0; i < priv->rx_ring_num; i++) {
 839                 cq = &priv->rx_cq[i];
 840                 spin_lock_irqsave(&cq->lock, flags);
 841                 napi_synchronize(&cq->napi);
 842                 mlx4_en_process_rx_cq(dev, cq, 0);
 843                 spin_unlock_irqrestore(&cq->lock, flags);
 844         }
 845 }
 846 #endif
 847
 848 static void mlx4_en_tx_timeout(struct net_device *dev)
 849 {
 850         struct mlx4_en_priv *priv = netdev_priv(dev);
 851         struct mlx4_en_dev *mdev = priv->mdev;
 852
 853         if (netif_msg_timer(priv))
 854                 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
 855
 856         priv->port_stats.tx_timeout++;
 857         en_dbg(DRV, priv, "Scheduling watchdog\n");
 858         queue_work(mdev->workqueue, &priv->watchdog_task);
 859 }
 860
 861
 862 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
 863 {
 864         struct mlx4_en_priv *priv = netdev_priv(dev);
 865
 866         spin_lock_bh(&priv->stats_lock);
 867         memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
 868         spin_unlock_bh(&priv->stats_lock);
 869
 870         return &priv->ret_stats;
 871 }
 872
 873 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
 874 {
 875         struct mlx4_en_cq *cq;
 876         int i;
 877
 878         /* If we haven't received a specific coalescing setting
 879          * (module param), we set the moderation parameters as follows:
 880          * - moder_cnt is set to the number of mtu sized packets to
 881          *   satisfy our coalescing target.
 882          * - moder_time is set to a fixed value.
 883          */
 884         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
 885         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
 886         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
 887         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
 888         en_dbg(INTR, priv, "Default coalesing params for mtu:%d - "
 889                            "rx_frames:%d rx_usecs:%d\n",
 890                  priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
 891
 892         /* Setup cq moderation params */
 893         for (i = 0; i < priv->rx_ring_num; i++) {
 894                 cq = &priv->rx_cq[i];
 895                 cq->moder_cnt = priv->rx_frames;
 896                 cq->moder_time = priv->rx_usecs;
 897                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
 898                 priv->last_moder_packets[i] = 0;
 899                 priv->last_moder_bytes[i] = 0;
 900         }
 901
 902         for (i = 0; i < priv->tx_ring_num; i++) {
 903                 cq = &priv->tx_cq[i];
 904                 cq->moder_cnt = priv->tx_frames;
 905                 cq->moder_time = priv->tx_usecs;
 906         }
 907
 908         /* Reset auto-moderation params */
 909         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
 910         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
 911         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
 912         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
 913         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
 914         priv->adaptive_rx_coal = 1;
 915         priv->last_moder_jiffies = 0;
 916         priv->last_moder_tx_packets = 0;
 917 }
 918
 919 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
 920 {
 921         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
 922         struct mlx4_en_cq *cq;
 923         unsigned long packets;
 924         unsigned long rate;
 925         unsigned long avg_pkt_size;
 926         unsigned long rx_packets;
 927         unsigned long rx_bytes;
 928         unsigned long rx_pkt_diff;
 929         int moder_time;
 930         int ring, err;
 931
 932         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
 933                 return;
 934
 935         for (ring = 0; ring < priv->rx_ring_num; ring++) {
 936                 spin_lock_bh(&priv->stats_lock);
 937                 rx_packets = priv->rx_ring[ring].packets;
 938                 rx_bytes = priv->rx_ring[ring].bytes;
 939                 spin_unlock_bh(&priv->stats_lock);
 940
 941                 rx_pkt_diff = ((unsigned long) (rx_packets -
 942                                 priv->last_moder_packets[ring]));
 943                 packets = rx_pkt_diff;
 944                 rate = packets * HZ / period;
 945                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
 946                                 priv->last_moder_bytes[ring])) / packets : 0;
 947
 948                 /* Apply auto-moderation only when packet rate
 949                  * exceeds a rate that it matters */
 950                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
 951                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
 952                         if (rate < priv->pkt_rate_low)
 953                                 moder_time = priv->rx_usecs_low;
 954                         else if (rate > priv->pkt_rate_high)
 955                                 moder_time = priv->rx_usecs_high;
 956                         else
 957                                 moder_time = (rate - priv->pkt_rate_low) *
 958                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
 959                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
 960                                         priv->rx_usecs_low;
 961                 } else {
 962                         moder_time = priv->rx_usecs_low;
 963                 }
 964
 965                 if (moder_time != priv->last_moder_time[ring]) {
 966                         priv->last_moder_time[ring] = moder_time;
 967                         cq = &priv->rx_cq[ring];
 968                         cq->moder_time = moder_time;
 969                         err = mlx4_en_set_cq_moder(priv, cq);
 970                         if (err)
 971                                 en_err(priv, "Failed modifying moderation "
 972                                              "for cq:%d\n", ring);
 973                 }
 974                 priv->last_moder_packets[ring] = rx_packets;
 975                 priv->last_moder_bytes[ring] = rx_bytes;
 976         }
 977
 978         priv->last_moder_jiffies = jiffies;
 979 }
 980
 981 static void mlx4_en_do_get_stats(struct work_struct *work)
 982 {
 983         struct delayed_work *delay = to_delayed_work(work);
 984         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
 985                                                  stats_task);
 986         struct mlx4_en_dev *mdev = priv->mdev;
 987         int err;
 988
 989         mutex_lock(&mdev->state_lock);
 990         if (mdev->device_up) {
 991                 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
 992                 if (err)
 993                         en_dbg(HW, priv, "Could not update stats\n");
 994
 995                 if (priv->port_up)
 996                         mlx4_en_auto_moderation(priv);
 997
 998                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
 999         }
1000         if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1001                 queue_work(mdev->workqueue, &priv->mac_task);
1002                 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1003         }
1004         mutex_unlock(&mdev->state_lock);
1005 }
1006
1007 static void mlx4_en_linkstate(struct work_struct *work)
1008 {
1009         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1010                                                  linkstate_task);
1011         struct mlx4_en_dev *mdev = priv->mdev;
1012         int linkstate = priv->link_state;
1013
1014         mutex_lock(&mdev->state_lock);
1015         /* If observable port state changed set carrier state and
1016          * report to system log */
1017         if (priv->last_link_state != linkstate) {
1018                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1019                         en_info(priv, "Link Down\n");
1020                         netif_carrier_off(priv->dev);
1021                 } else {
1022                         en_info(priv, "Link Up\n");
1023                         netif_carrier_on(priv->dev);
1024                 }
1025         }
1026         priv->last_link_state = linkstate;
1027         mutex_unlock(&mdev->state_lock);
1028 }
1029
1030
1031 int mlx4_en_start_port(struct net_device *dev)
1032 {
1033         struct mlx4_en_priv *priv = netdev_priv(dev);
1034         struct mlx4_en_dev *mdev = priv->mdev;
1035         struct mlx4_en_cq *cq;
1036         struct mlx4_en_tx_ring *tx_ring;
1037         int rx_index = 0;
1038         int tx_index = 0;
1039         int err = 0;
1040         int i;
1041         int j;
1042         u8 mc_list[16] = {0};
1043         u64 mac = mlx4_en_mac_to_u64(dev->dev_addr);
1044
1045         if (priv->port_up) {
1046                 en_dbg(DRV, priv, "start port called while port already up\n");
1047                 return 0;
1048         }
1049
1050         INIT_LIST_HEAD(&priv->mc_list);
1051         INIT_LIST_HEAD(&priv->curr_list);
1052         INIT_LIST_HEAD(&priv->ethtool_list);
1053         memset(&priv->ethtool_rules[0], 0,
1054                sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1055
1056         /* Calculate Rx buf size */
1057         dev->mtu = min(dev->mtu, priv->max_mtu);
1058         mlx4_en_calc_rx_buf(dev);
1059         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1060
1061         /* Configure rx cq's and rings */
1062         err = mlx4_en_activate_rx_rings(priv);
1063         if (err) {
1064                 en_err(priv, "Failed to activate RX rings\n");
1065                 return err;
1066         }
1067         for (i = 0; i < priv->rx_ring_num; i++) {
1068                 cq = &priv->rx_cq[i];
1069
1070                 err = mlx4_en_activate_cq(priv, cq, i);
1071                 if (err) {
1072                         en_err(priv, "Failed activating Rx CQ\n");
1073                         goto cq_err;
1074                 }
1075                 for (j = 0; j < cq->size; j++)
1076                         cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1077                 err = mlx4_en_set_cq_moder(priv, cq);
1078                 if (err) {
1079                         en_err(priv, "Failed setting cq moderation parameters");
1080                         mlx4_en_deactivate_cq(priv, cq);
1081                         goto cq_err;
1082                 }
1083                 mlx4_en_arm_cq(priv, cq);
1084                 priv->rx_ring[i].cqn = cq->mcq.cqn;
1085                 ++rx_index;
1086         }
1087
1088         /* Set qp number */
1089         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1090         err = mlx4_get_eth_qp(mdev->dev, priv->port,
1091                               mac, &priv->base_qpn);
1092         if (err) {
1093                 en_err(priv, "Failed getting eth qp\n");
1094                 goto cq_err;
1095         }
1096         mdev->mac_removed[priv->port] = 0;
1097
1098         err = mlx4_en_config_rss_steer(priv);
1099         if (err) {
1100                 en_err(priv, "Failed configuring rss steering\n");
1101                 goto mac_err;
1102         }
1103
1104         err = mlx4_en_create_drop_qp(priv);
1105         if (err)
1106                 goto rss_err;
1107
1108         /* Configure tx cq's and rings */
1109         for (i = 0; i < priv->tx_ring_num; i++) {
1110                 /* Configure cq */
1111                 cq = &priv->tx_cq[i];
1112                 err = mlx4_en_activate_cq(priv, cq, i);
1113                 if (err) {
1114                         en_err(priv, "Failed allocating Tx CQ\n");
1115                         goto tx_err;
1116                 }
1117                 err = mlx4_en_set_cq_moder(priv, cq);
1118                 if (err) {
1119                         en_err(priv, "Failed setting cq moderation parameters");
1120                         mlx4_en_deactivate_cq(priv, cq);
1121                         goto tx_err;
1122                 }
1123                 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1124                 cq->buf->wqe_index = cpu_to_be16(0xffff);
1125
1126                 /* Configure ring */
1127                 tx_ring = &priv->tx_ring[i];
1128                 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1129                         i / priv->num_tx_rings_p_up);
1130                 if (err) {
1131                         en_err(priv, "Failed allocating Tx ring\n");
1132                         mlx4_en_deactivate_cq(priv, cq);
1133                         goto tx_err;
1134                 }
1135                 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1136
1137                 /* Arm CQ for TX completions */
1138                 mlx4_en_arm_cq(priv, cq);
1139
1140                 /* Set initial ownership of all Tx TXBBs to SW (1) */
1141                 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1142                         *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1143                 ++tx_index;
1144         }
1145
1146         /* Configure port */
1147         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1148                                     priv->rx_skb_size + ETH_FCS_LEN,
1149                                     priv->prof->tx_pause,
1150                                     priv->prof->tx_ppp,
1151                                     priv->prof->rx_pause,
1152                                     priv->prof->rx_ppp);
1153         if (err) {
1154                 en_err(priv, "Failed setting port general configurations "
1155                              "for port %d, with error %d\n", priv->port, err);
1156                 goto tx_err;
1157         }
1158         /* Set default qp number */
1159         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1160         if (err) {
1161                 en_err(priv, "Failed setting default qp numbers\n");
1162                 goto tx_err;
1163         }
1164
1165         /* Init port */
1166         en_dbg(HW, priv, "Initializing port\n");
1167         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1168         if (err) {
1169                 en_err(priv, "Failed Initializing port\n");
1170                 goto tx_err;
1171         }
1172
1173         /* Attach rx QP to bradcast address */
1174         memset(&mc_list[10], 0xff, ETH_ALEN);
1175         mc_list[5] = priv->port; /* needed for B0 steering support */
1176         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1177                                   priv->port, 0, MLX4_PROT_ETH,
1178                                   &priv->broadcast_id))
1179                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1180
1181         /* Must redo promiscuous mode setup. */
1182         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1183
1184         /* Schedule multicast task to populate multicast list */
1185         queue_work(mdev->workqueue, &priv->mcast_task);
1186
1187         mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap);
1188
1189         priv->port_up = true;
1190         netif_tx_start_all_queues(dev);
1191         netif_device_attach(dev);
1192
1193         return 0;
1194
1195 tx_err:
1196         while (tx_index--) {
1197                 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[tx_index]);
1198                 mlx4_en_deactivate_cq(priv, &priv->tx_cq[tx_index]);
1199         }
1200         mlx4_en_destroy_drop_qp(priv);
1201 rss_err:
1202         mlx4_en_release_rss_steer(priv);
1203 mac_err:
1204         mlx4_put_eth_qp(mdev->dev, priv->port, mac, priv->base_qpn);
1205 cq_err:
1206         while (rx_index--)
1207                 mlx4_en_deactivate_cq(priv, &priv->rx_cq[rx_index]);
1208         for (i = 0; i < priv->rx_ring_num; i++)
1209                 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
1210
1211         return err; /* need to close devices */
1212 }
1213
1214
1215 void mlx4_en_stop_port(struct net_device *dev, int detach)
1216 {
1217         struct mlx4_en_priv *priv = netdev_priv(dev);
1218         struct mlx4_en_dev *mdev = priv->mdev;
1219         struct mlx4_en_mc_list *mclist, *tmp;
1220         struct ethtool_flow_id *flow, *tmp_flow;
1221         int i;
1222         u8 mc_list[16] = {0};
1223         u64 mac = mlx4_en_mac_to_u64(dev->dev_addr);
1224
1225         if (!priv->port_up) {
1226                 en_dbg(DRV, priv, "stop port called while port already down\n");
1227                 return;
1228         }
1229
1230         /* Synchronize with tx routine */
1231         netif_tx_lock_bh(dev);
1232         if (detach)
1233                 netif_device_detach(dev);
1234         netif_tx_stop_all_queues(dev);
1235         netif_tx_unlock_bh(dev);
1236
1237         netif_tx_disable(dev);
1238
1239         /* Set port as not active */
1240         priv->port_up = false;
1241
1242         /* Promsicuous mode */
1243         if (mdev->dev->caps.steering_mode ==
1244             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1245                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1246                                  MLX4_EN_FLAG_MC_PROMISC);
1247                 mlx4_flow_steer_promisc_remove(mdev->dev,
1248                                                priv->port,
1249                                                MLX4_FS_PROMISC_UPLINK);
1250                 mlx4_flow_steer_promisc_remove(mdev->dev,
1251                                                priv->port,
1252                                                MLX4_FS_PROMISC_ALL_MULTI);
1253         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1254                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1255
1256                 /* Disable promiscouos mode */
1257                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1258                                             priv->port);
1259
1260                 /* Disable Multicast promisc */
1261                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1262                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1263                                                       priv->port);
1264                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1265                 }
1266         }
1267
1268         /* Detach All multicasts */
1269         memset(&mc_list[10], 0xff, ETH_ALEN);
1270         mc_list[5] = priv->port; /* needed for B0 steering support */
1271         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1272                               MLX4_PROT_ETH, priv->broadcast_id);
1273         list_for_each_entry(mclist, &priv->curr_list, list) {
1274                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1275                 mc_list[5] = priv->port;
1276                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1277                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1278         }
1279         mlx4_en_clear_list(dev);
1280         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1281                 list_del(&mclist->list);
1282                 kfree(mclist);
1283         }
1284
1285         /* Flush multicast filter */
1286         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1287
1288         mlx4_en_destroy_drop_qp(priv);
1289
1290         /* Free TX Rings */
1291         for (i = 0; i < priv->tx_ring_num; i++) {
1292                 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[i]);
1293                 mlx4_en_deactivate_cq(priv, &priv->tx_cq[i]);
1294         }
1295         msleep(10);
1296
1297         for (i = 0; i < priv->tx_ring_num; i++)
1298                 mlx4_en_free_tx_buf(dev, &priv->tx_ring[i]);
1299
1300         /* Free RSS qps */
1301         mlx4_en_release_rss_steer(priv);
1302
1303         /* Unregister Mac address for the port */
1304         mlx4_put_eth_qp(mdev->dev, priv->port, mac, priv->base_qpn);
1305         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAGS2_REASSIGN_MAC_EN))
1306                 mdev->mac_removed[priv->port] = 1;
1307
1308         /* Remove flow steering rules for the port*/
1309         if (mdev->dev->caps.steering_mode ==
1310             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1311                 ASSERT_RTNL();
1312                 list_for_each_entry_safe(flow, tmp_flow,
1313                                          &priv->ethtool_list, list) {
1314                         mlx4_flow_detach(mdev->dev, flow->id);
1315                         list_del(&flow->list);
1316                 }
1317         }
1318
1319         /* Free RX Rings */
1320         for (i = 0; i < priv->rx_ring_num; i++) {
1321                 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
1322                 while (test_bit(NAPI_STATE_SCHED, &priv->rx_cq[i].napi.state))
1323                         msleep(1);
1324                 mlx4_en_deactivate_cq(priv, &priv->rx_cq[i]);
1325         }
1326
1327         /* close port*/
1328         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1329 }
1330
1331 static void mlx4_en_restart(struct work_struct *work)
1332 {
1333         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1334                                                  watchdog_task);
1335         struct mlx4_en_dev *mdev = priv->mdev;
1336         struct net_device *dev = priv->dev;
1337         int i;
1338
1339         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1340
1341         mutex_lock(&mdev->state_lock);
1342         if (priv->port_up) {
1343                 mlx4_en_stop_port(dev, 1);
1344                 for (i = 0; i < priv->tx_ring_num; i++)
1345                         netdev_tx_reset_queue(priv->tx_ring[i].tx_queue);
1346                 if (mlx4_en_start_port(dev))
1347                         en_err(priv, "Failed restarting port %d\n", priv->port);
1348         }
1349         mutex_unlock(&mdev->state_lock);
1350 }
1351
1352 static void mlx4_en_clear_stats(struct net_device *dev)
1353 {
1354         struct mlx4_en_priv *priv = netdev_priv(dev);
1355         struct mlx4_en_dev *mdev = priv->mdev;
1356         int i;
1357
1358         if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1359                 en_dbg(HW, priv, "Failed dumping statistics\n");
1360
1361         memset(&priv->stats, 0, sizeof(priv->stats));
1362         memset(&priv->pstats, 0, sizeof(priv->pstats));
1363         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1364         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1365
1366         for (i = 0; i < priv->tx_ring_num; i++) {
1367                 priv->tx_ring[i].bytes = 0;
1368                 priv->tx_ring[i].packets = 0;
1369                 priv->tx_ring[i].tx_csum = 0;
1370         }
1371         for (i = 0; i < priv->rx_ring_num; i++) {
1372                 priv->rx_ring[i].bytes = 0;
1373                 priv->rx_ring[i].packets = 0;
1374                 priv->rx_ring[i].csum_ok = 0;
1375                 priv->rx_ring[i].csum_none = 0;
1376         }
1377 }
1378
1379 static int mlx4_en_open(struct net_device *dev)
1380 {
1381         struct mlx4_en_priv *priv = netdev_priv(dev);
1382         struct mlx4_en_dev *mdev = priv->mdev;
1383         int err = 0;
1384
1385         mutex_lock(&mdev->state_lock);
1386
1387         if (!mdev->device_up) {
1388                 en_err(priv, "Cannot open - device down/disabled\n");
1389                 err = -EBUSY;
1390                 goto out;
1391         }
1392
1393         /* Reset HW statistics and SW counters */
1394         mlx4_en_clear_stats(dev);
1395
1396         err = mlx4_en_start_port(dev);
1397         if (err)
1398                 en_err(priv, "Failed starting port:%d\n", priv->port);
1399
1400 out:
1401         mutex_unlock(&mdev->state_lock);
1402         return err;
1403 }
1404
1405
1406 static int mlx4_en_close(struct net_device *dev)
1407 {
1408         struct mlx4_en_priv *priv = netdev_priv(dev);
1409         struct mlx4_en_dev *mdev = priv->mdev;
1410
1411         en_dbg(IFDOWN, priv, "Close port called\n");
1412
1413         mutex_lock(&mdev->state_lock);
1414
1415         mlx4_en_stop_port(dev, 0);
1416         netif_carrier_off(dev);
1417
1418         mutex_unlock(&mdev->state_lock);
1419         return 0;
1420 }
1421
1422 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1423 {
1424         int i;
1425
1426 #ifdef CONFIG_RFS_ACCEL
1427         free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1428         priv->dev->rx_cpu_rmap = NULL;
1429 #endif
1430
1431         for (i = 0; i < priv->tx_ring_num; i++) {
1432                 if (priv->tx_ring[i].tx_info)
1433                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1434                 if (priv->tx_cq[i].buf)
1435                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1436         }
1437
1438         for (i = 0; i < priv->rx_ring_num; i++) {
1439                 if (priv->rx_ring[i].rx_info)
1440                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1441                                 priv->prof->rx_ring_size, priv->stride);
1442                 if (priv->rx_cq[i].buf)
1443                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1444         }
1445
1446         if (priv->base_tx_qpn) {
1447                 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num);
1448                 priv->base_tx_qpn = 0;
1449         }
1450 }
1451
1452 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1453 {
1454         struct mlx4_en_port_profile *prof = priv->prof;
1455         int i;
1456         int err;
1457
1458         err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &priv->base_tx_qpn);
1459         if (err) {
1460                 en_err(priv, "failed reserving range for TX rings\n");
1461                 return err;
1462         }
1463
1464         /* Create tx Rings */
1465         for (i = 0; i < priv->tx_ring_num; i++) {
1466                 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1467                                       prof->tx_ring_size, i, TX))
1468                         goto err;
1469
1470                 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], priv->base_tx_qpn + i,
1471                                            prof->tx_ring_size, TXBB_SIZE))
1472                         goto err;
1473         }
1474
1475         /* Create rx Rings */
1476         for (i = 0; i < priv->rx_ring_num; i++) {
1477                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
1478                                       prof->rx_ring_size, i, RX))
1479                         goto err;
1480
1481                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
1482                                            prof->rx_ring_size, priv->stride))
1483                         goto err;
1484         }
1485
1486 #ifdef CONFIG_RFS_ACCEL
1487         priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->rx_ring_num);
1488         if (!priv->dev->rx_cpu_rmap)
1489                 goto err;
1490 #endif
1491
1492         return 0;
1493
1494 err:
1495         en_err(priv, "Failed to allocate NIC resources\n");
1496         return -ENOMEM;
1497 }
1498
1499
1500 void mlx4_en_destroy_netdev(struct net_device *dev)
1501 {
1502         struct mlx4_en_priv *priv = netdev_priv(dev);
1503         struct mlx4_en_dev *mdev = priv->mdev;
1504
1505         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
1506
1507         /* Unregister device - this will close the port if it was up */
1508         if (priv->registered)
1509                 unregister_netdev(dev);
1510
1511         if (priv->allocated)
1512                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
1513
1514         cancel_delayed_work(&priv->stats_task);
1515         /* flush any pending task for this netdev */
1516         flush_workqueue(mdev->workqueue);
1517
1518         /* Detach the netdev so tasks would not attempt to access it */
1519         mutex_lock(&mdev->state_lock);
1520         mdev->pndev[priv->port] = NULL;
1521         mutex_unlock(&mdev->state_lock);
1522
1523         mlx4_en_free_resources(priv);
1524
1525         kfree(priv->tx_ring);
1526         kfree(priv->tx_cq);
1527
1528         free_netdev(dev);
1529 }
1530
1531 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
1532 {
1533         struct mlx4_en_priv *priv = netdev_priv(dev);
1534         struct mlx4_en_dev *mdev = priv->mdev;
1535         int err = 0;
1536
1537         en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
1538                  dev->mtu, new_mtu);
1539
1540         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
1541                 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
1542                 return -EPERM;
1543         }
1544         dev->mtu = new_mtu;
1545
1546         if (netif_running(dev)) {
1547                 mutex_lock(&mdev->state_lock);
1548                 if (!mdev->device_up) {
1549                         /* NIC is probably restarting - let watchdog task reset
1550                          * the port */
1551                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
1552                 } else {
1553                         mlx4_en_stop_port(dev, 1);
1554                         err = mlx4_en_start_port(dev);
1555                         if (err) {
1556                                 en_err(priv, "Failed restarting port:%d\n",
1557                                          priv->port);
1558                                 queue_work(mdev->workqueue, &priv->watchdog_task);
1559                         }
1560                 }
1561                 mutex_unlock(&mdev->state_lock);
1562         }
1563         return 0;
1564 }
1565
1566 static int mlx4_en_set_features(struct net_device *netdev,
1567                 netdev_features_t features)
1568 {
1569         struct mlx4_en_priv *priv = netdev_priv(netdev);
1570
1571         if (features & NETIF_F_LOOPBACK)
1572                 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK);
1573         else
1574                 priv->ctrl_flags &=
1575                         cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK);
1576
1577         mlx4_en_update_loopback_state(netdev, features);
1578
1579         return 0;
1580
1581 }
1582
1583 static const struct net_device_ops mlx4_netdev_ops = {
1584         .ndo_open               = mlx4_en_open,
1585         .ndo_stop               = mlx4_en_close,
1586         .ndo_start_xmit         = mlx4_en_xmit,
1587         .ndo_select_queue       = mlx4_en_select_queue,
1588         .ndo_get_stats          = mlx4_en_get_stats,
1589         .ndo_set_rx_mode        = mlx4_en_set_multicast,
1590         .ndo_set_mac_address    = mlx4_en_set_mac,
1591         .ndo_validate_addr      = eth_validate_addr,
1592         .ndo_change_mtu         = mlx4_en_change_mtu,
1593         .ndo_tx_timeout         = mlx4_en_tx_timeout,
1594         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
1595         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
1596 #ifdef CONFIG_NET_POLL_CONTROLLER
1597         .ndo_poll_controller    = mlx4_en_netpoll,
1598 #endif
1599         .ndo_set_features       = mlx4_en_set_features,
1600         .ndo_setup_tc           = mlx4_en_setup_tc,
1601 #ifdef CONFIG_RFS_ACCEL
1602         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
1603 #endif
1604 };
1605
1606 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
1607                         struct mlx4_en_port_profile *prof)
1608 {
1609         struct net_device *dev;
1610         struct mlx4_en_priv *priv;
1611         int err;
1612
1613         dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
1614                                  MAX_TX_RINGS, MAX_RX_RINGS);
1615         if (dev == NULL)
1616                 return -ENOMEM;
1617
1618         netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
1619         netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
1620
1621         SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
1622         dev->dev_id =  port - 1;
1623
1624         /*
1625          * Initialize driver private data
1626          */
1627
1628         priv = netdev_priv(dev);
1629         memset(priv, 0, sizeof(struct mlx4_en_priv));
1630         priv->dev = dev;
1631         priv->mdev = mdev;
1632         priv->ddev = &mdev->pdev->dev;
1633         priv->prof = prof;
1634         priv->port = port;
1635         priv->port_up = false;
1636         priv->flags = prof->flags;
1637         priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
1638                         MLX4_WQE_CTRL_SOLICITED);
1639         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
1640         priv->tx_ring_num = prof->tx_ring_num;
1641
1642         priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring) * MAX_TX_RINGS,
1643                                 GFP_KERNEL);
1644         if (!priv->tx_ring) {
1645                 err = -ENOMEM;
1646                 goto out;
1647         }
1648         priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq) * MAX_RX_RINGS,
1649                               GFP_KERNEL);
1650         if (!priv->tx_cq) {
1651                 err = -ENOMEM;
1652                 goto out;
1653         }
1654         priv->rx_ring_num = prof->rx_ring_num;
1655         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
1656         priv->mac_index = -1;
1657         priv->msg_enable = MLX4_EN_MSG_LEVEL;
1658         spin_lock_init(&priv->stats_lock);
1659         INIT_WORK(&priv->mcast_task, mlx4_en_do_set_multicast);
1660         INIT_WORK(&priv->mac_task, mlx4_en_do_set_mac);
1661         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
1662         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
1663         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
1664 #ifdef CONFIG_MLX4_EN_DCB
1665         if (!mlx4_is_slave(priv->mdev->dev))
1666                 dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
1667 #endif
1668
1669         /* Query for default mac and max mtu */
1670         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
1671
1672         /* Set default MAC */
1673         dev->addr_len = ETH_ALEN;
1674         mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
1675         if (!is_valid_ether_addr(dev->dev_addr)) {
1676                 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
1677                        priv->port, dev->dev_addr);
1678                 err = -EINVAL;
1679                 goto out;
1680         }
1681
1682         memcpy(priv->prev_mac, dev->dev_addr, sizeof(priv->prev_mac));
1683
1684         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
1685                                           DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
1686         err = mlx4_en_alloc_resources(priv);
1687         if (err)
1688                 goto out;
1689
1690 #ifdef CONFIG_RFS_ACCEL
1691         INIT_LIST_HEAD(&priv->filters);
1692         spin_lock_init(&priv->filters_lock);
1693 #endif
1694
1695         /* Allocate page for receive rings */
1696         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
1697                                 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
1698         if (err) {
1699                 en_err(priv, "Failed to allocate page for rx qps\n");
1700                 goto out;
1701         }
1702         priv->allocated = 1;
1703
1704         /*
1705          * Initialize netdev entry points
1706          */
1707         dev->netdev_ops = &mlx4_netdev_ops;
1708         dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
1709         netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
1710         netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
1711
1712         SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops);
1713
1714         /*
1715          * Set driver features
1716          */
1717         dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
1718         if (mdev->LSO_support)
1719                 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
1720
1721         dev->vlan_features = dev->hw_features;
1722
1723         dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
1724         dev->features = dev->hw_features | NETIF_F_HIGHDMA |
1725                         NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
1726                         NETIF_F_HW_VLAN_FILTER;
1727         dev->hw_features |= NETIF_F_LOOPBACK;
1728
1729         if (mdev->dev->caps.steering_mode ==
1730             MLX4_STEERING_MODE_DEVICE_MANAGED)
1731                 dev->hw_features |= NETIF_F_NTUPLE;
1732
1733         mdev->pndev[port] = dev;
1734
1735         netif_carrier_off(dev);
1736         err = register_netdev(dev);
1737         if (err) {
1738                 en_err(priv, "Netdev registration failed for port %d\n", port);
1739                 goto out;
1740         }
1741         priv->registered = 1;
1742
1743         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
1744         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
1745
1746         mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
1747
1748         /* Configure port */
1749         mlx4_en_calc_rx_buf(dev);
1750         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1751                                     priv->rx_skb_size + ETH_FCS_LEN,
1752                                     prof->tx_pause, prof->tx_ppp,
1753                                     prof->rx_pause, prof->rx_ppp);
1754         if (err) {
1755                 en_err(priv, "Failed setting port general configurations "
1756                        "for port %d, with error %d\n", priv->port, err);
1757                 goto out;
1758         }
1759
1760         /* Init port */
1761         en_warn(priv, "Initializing port\n");
1762         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1763         if (err) {
1764                 en_err(priv, "Failed Initializing port\n");
1765                 goto out;
1766         }
1767         mlx4_en_set_default_moderation(priv);
1768         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1769         return 0;
1770
1771 out:
1772         mlx4_en_destroy_netdev(dev);
1773         return err;
1774 }
1775