sys/dev/mlx4/mlx4_en/mlx4_en_netdev.c

   1 /*
   2  * Copyright (c) 2007, 2014 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/delay.h>
  36 #include <linux/slab.h>
  37 #include <linux/compat.h>
  38 #ifdef CONFIG_NET_RX_BUSY_POLL
  39 #include <net/busy_poll.h>
  40 #endif
  41
  42 #include <linux/list.h>
  43 #include <linux/if_ether.h>
  44
  45 #include <dev/mlx4/driver.h>
  46 #include <dev/mlx4/device.h>
  47 #include <dev/mlx4/cmd.h>
  48 #include <dev/mlx4/cq.h>
  49
  50 #include <sys/eventhandler.h>
  51 #include <sys/sockio.h>
  52 #include <sys/sysctl.h>
  53
  54 #include "en.h"
  55 #include "en_port.h"
  56
  57 DEBUGNET_DEFINE(mlx4_en);
  58
  59 static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv);
  60 static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv);
  61
  62 #ifdef CONFIG_NET_RX_BUSY_POLL
  63 /* must be called with local_bh_disable()d */
  64 static int mlx4_en_low_latency_recv(struct napi_struct *napi)
  65 {
  66         struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
  67         struct net_device *dev = cq->dev;
  68         struct mlx4_en_priv *priv = netdev_priv(dev);
  69         struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring];
  70         int done;
  71
  72         if (!priv->port_up)
  73                 return LL_FLUSH_FAILED;
  74
  75         if (!mlx4_en_cq_lock_poll(cq))
  76                 return LL_FLUSH_BUSY;
  77
  78         done = mlx4_en_process_rx_cq(dev, cq, 4);
  79 #ifdef LL_EXTENDED_STATS
  80         if (likely(done))
  81                 rx_ring->cleaned += done;
  82         else
  83                 rx_ring->misses++;
  84 #endif
  85
  86         mlx4_en_cq_unlock_poll(cq);
  87
  88         return done;
  89 }
  90 #endif  /* CONFIG_NET_RX_BUSY_POLL */
  91
  92 #ifdef CONFIG_RFS_ACCEL
  93
  94 struct mlx4_en_filter {
  95         struct list_head next;
  96         struct work_struct work;
  97
  98         u8     ip_proto;
  99         __be32 src_ip;
 100         __be32 dst_ip;
 101         __be16 src_port;
 102         __be16 dst_port;
 103
 104         int rxq_index;
 105         struct mlx4_en_priv *priv;
 106         u32 flow_id;                    /* RFS infrastructure id */
 107         int id;                         /* mlx4_en driver id */
 108         u64 reg_id;                     /* Flow steering API id */
 109         u8 activated;                   /* Used to prevent expiry before filter
 110                                          * is attached
 111                                          */
 112         struct hlist_node filter_chain;
 113 };
 114
 115 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 116
 117 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 118 {
 119         switch (ip_proto) {
 120         case IPPROTO_UDP:
 121                 return MLX4_NET_TRANS_RULE_ID_UDP;
 122         case IPPROTO_TCP:
 123                 return MLX4_NET_TRANS_RULE_ID_TCP;
 124         default:
 125                 return MLX4_NET_TRANS_RULE_NUM;
 126         }
 127 };
 128
 129 static void mlx4_en_filter_work(struct work_struct *work)
 130 {
 131         struct mlx4_en_filter *filter = container_of(work,
 132                                                      struct mlx4_en_filter,
 133                                                      work);
 134         struct mlx4_en_priv *priv = filter->priv;
 135         struct mlx4_spec_list spec_tcp_udp = {
 136                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 137                 {
 138                         .tcp_udp = {
 139                                 .dst_port = filter->dst_port,
 140                                 .dst_port_msk = (__force __be16)-1,
 141                                 .src_port = filter->src_port,
 142                                 .src_port_msk = (__force __be16)-1,
 143                         },
 144                 },
 145         };
 146         struct mlx4_spec_list spec_ip = {
 147                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 148                 {
 149                         .ipv4 = {
 150                                 .dst_ip = filter->dst_ip,
 151                                 .dst_ip_msk = (__force __be32)-1,
 152                                 .src_ip = filter->src_ip,
 153                                 .src_ip_msk = (__force __be32)-1,
 154                         },
 155                 },
 156         };
 157         struct mlx4_spec_list spec_eth = {
 158                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 159         };
 160         struct mlx4_net_trans_rule rule = {
 161                 .list = LIST_HEAD_INIT(rule.list),
 162                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 163                 .exclusive = 1,
 164                 .allow_loopback = 1,
 165                 .promisc_mode = MLX4_FS_REGULAR,
 166                 .port = priv->port,
 167                 .priority = MLX4_DOMAIN_RFS,
 168         };
 169         int rc;
 170         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 171
 172         if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
 173                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 174                         filter->ip_proto);
 175                 goto ignore;
 176         }
 177         list_add_tail(&spec_eth.list, &rule.list);
 178         list_add_tail(&spec_ip.list, &rule.list);
 179         list_add_tail(&spec_tcp_udp.list, &rule.list);
 180
 181         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 182         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 183         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 184
 185         filter->activated = 0;
 186
 187         if (filter->reg_id) {
 188                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 189                 if (rc && rc != -ENOENT)
 190                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 191         }
 192
 193         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 194         if (rc)
 195                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 196
 197 ignore:
 198         mlx4_en_filter_rfs_expire(priv);
 199
 200         filter->activated = 1;
 201 }
 202
 203 static inline struct hlist_head *
 204 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 205                    __be16 src_port, __be16 dst_port)
 206 {
 207         unsigned long l;
 208         int bucket_idx;
 209
 210         l = (__force unsigned long)src_port |
 211             ((__force unsigned long)dst_port << 2);
 212         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 213
 214         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 215
 216         return &priv->filter_hash[bucket_idx];
 217 }
 218
 219 static struct mlx4_en_filter *
 220 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 221                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 222                      __be16 dst_port, u32 flow_id)
 223 {
 224         struct mlx4_en_filter *filter = NULL;
 225
 226         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 227         if (!filter)
 228                 return NULL;
 229
 230         filter->priv = priv;
 231         filter->rxq_index = rxq_index;
 232         INIT_WORK(&filter->work, mlx4_en_filter_work);
 233
 234         filter->src_ip = src_ip;
 235         filter->dst_ip = dst_ip;
 236         filter->ip_proto = ip_proto;
 237         filter->src_port = src_port;
 238         filter->dst_port = dst_port;
 239
 240         filter->flow_id = flow_id;
 241
 242         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 243
 244         list_add_tail(&filter->next, &priv->filters);
 245         hlist_add_head(&filter->filter_chain,
 246                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 247                                           dst_port));
 248
 249         return filter;
 250 }
 251
 252 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 253 {
 254         struct mlx4_en_priv *priv = filter->priv;
 255         int rc;
 256
 257         list_del(&filter->next);
 258
 259         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 260         if (rc && rc != -ENOENT)
 261                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 262
 263         kfree(filter);
 264 }
 265
 266 static inline struct mlx4_en_filter *
 267 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 268                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 269 {
 270         struct mlx4_en_filter *filter;
 271         struct mlx4_en_filter *ret = NULL;
 272
 273         hlist_for_each_entry(filter,
 274                              filter_hash_bucket(priv, src_ip, dst_ip,
 275                                                 src_port, dst_port),
 276                              filter_chain) {
 277                 if (filter->src_ip == src_ip &&
 278                     filter->dst_ip == dst_ip &&
 279                     filter->ip_proto == ip_proto &&
 280                     filter->src_port == src_port &&
 281                     filter->dst_port == dst_port) {
 282                         ret = filter;
 283                         break;
 284                 }
 285         }
 286
 287         return ret;
 288 }
 289
 290 static int
 291 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 292                    u16 rxq_index, u32 flow_id)
 293 {
 294         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 295         struct mlx4_en_filter *filter;
 296         const struct iphdr *ip;
 297         const __be16 *ports;
 298         u8 ip_proto;
 299         __be32 src_ip;
 300         __be32 dst_ip;
 301         __be16 src_port;
 302         __be16 dst_port;
 303         int nhoff = skb_network_offset(skb);
 304         int ret = 0;
 305
 306         if (skb->protocol != htons(ETH_P_IP))
 307                 return -EPROTONOSUPPORT;
 308
 309         ip = (const struct iphdr *)(skb->data + nhoff);
 310         if (ip_is_fragment(ip))
 311                 return -EPROTONOSUPPORT;
 312
 313         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 314                 return -EPROTONOSUPPORT;
 315         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 316
 317         ip_proto = ip->protocol;
 318         src_ip = ip->saddr;
 319         dst_ip = ip->daddr;
 320         src_port = ports[0];
 321         dst_port = ports[1];
 322
 323         spin_lock_bh(&priv->filters_lock);
 324         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 325                                      src_port, dst_port);
 326         if (filter) {
 327                 if (filter->rxq_index == rxq_index)
 328                         goto out;
 329
 330                 filter->rxq_index = rxq_index;
 331         } else {
 332                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 333                                               src_ip, dst_ip, ip_proto,
 334                                               src_port, dst_port, flow_id);
 335                 if (!filter) {
 336                         ret = -ENOMEM;
 337                         goto err;
 338                 }
 339         }
 340
 341         queue_work(priv->mdev->workqueue, &filter->work);
 342
 343 out:
 344         ret = filter->id;
 345 err:
 346         spin_unlock_bh(&priv->filters_lock);
 347
 348         return ret;
 349 }
 350
 351 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 352 {
 353         struct mlx4_en_filter *filter, *tmp;
 354         LIST_HEAD(del_list);
 355
 356         spin_lock_bh(&priv->filters_lock);
 357         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 358                 list_move(&filter->next, &del_list);
 359                 hlist_del(&filter->filter_chain);
 360         }
 361         spin_unlock_bh(&priv->filters_lock);
 362
 363         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 364                 cancel_work_sync(&filter->work);
 365                 mlx4_en_filter_free(filter);
 366         }
 367 }
 368
 369 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 370 {
 371         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 372         LIST_HEAD(del_list);
 373         int i = 0;
 374
 375         spin_lock_bh(&priv->filters_lock);
 376         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 377                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 378                         break;
 379
 380                 if (filter->activated &&
 381                     !work_pending(&filter->work) &&
 382                     rps_may_expire_flow(priv->dev,
 383                                         filter->rxq_index, filter->flow_id,
 384                                         filter->id)) {
 385                         list_move(&filter->next, &del_list);
 386                         hlist_del(&filter->filter_chain);
 387                 } else
 388                         last_filter = filter;
 389
 390                 i++;
 391         }
 392
 393         if (last_filter && (&last_filter->next != priv->filters.next))
 394                 list_move(&priv->filters, &last_filter->next);
 395
 396         spin_unlock_bh(&priv->filters_lock);
 397
 398         list_for_each_entry_safe(filter, tmp, &del_list, next)
 399                 mlx4_en_filter_free(filter);
 400 }
 401 #endif
 402
 403 static void mlx4_en_vlan_rx_add_vid(void *arg, struct net_device *dev, u16 vid)
 404 {
 405         struct mlx4_en_priv *priv = netdev_priv(dev);
 406         struct mlx4_en_dev *mdev = priv->mdev;
 407         int err;
 408         int idx;
 409
 410         if (arg != priv)
 411                 return;
 412
 413         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 414
 415         set_bit(vid, priv->active_vlans);
 416
 417         /* Add VID to port VLAN filter */
 418         mutex_lock(&mdev->state_lock);
 419         if (mdev->device_up && priv->port_up) {
 420                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 421                 if (err)
 422                         en_err(priv, "Failed configuring VLAN filter\n");
 423         }
 424         if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
 425                 en_dbg(HW, priv, "failed adding vlan %d\n", vid);
 426         mutex_unlock(&mdev->state_lock);
 427
 428 }
 429
 430 static void mlx4_en_vlan_rx_kill_vid(void *arg, struct net_device *dev, u16 vid)
 431 {
 432         struct mlx4_en_priv *priv = netdev_priv(dev);
 433         struct mlx4_en_dev *mdev = priv->mdev;
 434         int err;
 435
 436         if (arg != priv)
 437                 return;
 438
 439         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 440
 441         clear_bit(vid, priv->active_vlans);
 442
 443         /* Remove VID from port VLAN filter */
 444         mutex_lock(&mdev->state_lock);
 445         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 446
 447         if (mdev->device_up && priv->port_up) {
 448                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 449                 if (err)
 450                         en_err(priv, "Failed configuring VLAN filter\n");
 451         }
 452         mutex_unlock(&mdev->state_lock);
 453
 454 }
 455
 456 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
 457                                     int qpn, u64 *reg_id)
 458 {
 459         int err;
 460
 461         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
 462             priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
 463                 return 0; /* do nothing */
 464
 465         err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
 466                                     MLX4_DOMAIN_NIC, reg_id);
 467         if (err) {
 468                 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 469                 return err;
 470         }
 471         en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, (long long)*reg_id);
 472         return 0;
 473 }
 474
 475 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 476                                 unsigned char *mac, int *qpn, u64 *reg_id)
 477 {
 478         struct mlx4_en_dev *mdev = priv->mdev;
 479         struct mlx4_dev *dev = mdev->dev;
 480         int err;
 481
 482         switch (dev->caps.steering_mode) {
 483         case MLX4_STEERING_MODE_B0: {
 484                 struct mlx4_qp qp;
 485                 u8 gid[16] = {0};
 486
 487                 qp.qpn = *qpn;
 488                 memcpy(&gid[10], mac, ETH_ALEN);
 489                 gid[5] = priv->port;
 490
 491                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 492                 break;
 493         }
 494         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 495                 struct mlx4_spec_list spec_eth = { {NULL} };
 496                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 497
 498                 struct mlx4_net_trans_rule rule = {
 499                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 500                         .exclusive = 0,
 501                         .allow_loopback = 1,
 502                         .promisc_mode = MLX4_FS_REGULAR,
 503                         .priority = MLX4_DOMAIN_NIC,
 504                 };
 505
 506                 rule.port = priv->port;
 507                 rule.qpn = *qpn;
 508                 INIT_LIST_HEAD(&rule.list);
 509
 510                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 511                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 512                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 513                 list_add_tail(&spec_eth.list, &rule.list);
 514
 515                 err = mlx4_flow_attach(dev, &rule, reg_id);
 516                 break;
 517         }
 518         default:
 519                 return -EINVAL;
 520         }
 521         if (err)
 522                 en_warn(priv, "Failed Attaching Unicast\n");
 523
 524         return err;
 525 }
 526
 527 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 528                                      unsigned char *mac, int qpn, u64 reg_id)
 529 {
 530         struct mlx4_en_dev *mdev = priv->mdev;
 531         struct mlx4_dev *dev = mdev->dev;
 532
 533         switch (dev->caps.steering_mode) {
 534         case MLX4_STEERING_MODE_B0: {
 535                 struct mlx4_qp qp;
 536                 u8 gid[16] = {0};
 537
 538                 qp.qpn = qpn;
 539                 memcpy(&gid[10], mac, ETH_ALEN);
 540                 gid[5] = priv->port;
 541
 542                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 543                 break;
 544         }
 545         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 546                 mlx4_flow_detach(dev, reg_id);
 547                 break;
 548         }
 549         default:
 550                 en_err(priv, "Invalid steering mode.\n");
 551         }
 552 }
 553
 554 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 555 {
 556         struct mlx4_en_dev *mdev = priv->mdev;
 557         struct mlx4_dev *dev = mdev->dev;
 558         int index = 0;
 559         int err = 0;
 560         int *qpn = &priv->base_qpn;
 561         u64 mac = mlx4_mac_to_u64(IF_LLADDR(priv->dev));
 562
 563         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 564                IF_LLADDR(priv->dev));
 565         index = mlx4_register_mac(dev, priv->port, mac);
 566         if (index < 0) {
 567                 err = index;
 568                 en_err(priv, "Failed adding MAC: %pM\n",
 569                        IF_LLADDR(priv->dev));
 570                 return err;
 571         }
 572
 573         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 574                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 575                 *qpn = base_qpn + index;
 576                 return 0;
 577         }
 578
 579         err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP);
 580         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 581         if (err) {
 582                 en_err(priv, "Failed to reserve qp for mac registration\n");
 583                 mlx4_unregister_mac(dev, priv->port, mac);
 584                 return err;
 585         }
 586
 587         return 0;
 588 }
 589
 590 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 591 {
 592         struct mlx4_en_dev *mdev = priv->mdev;
 593         struct mlx4_dev *dev = mdev->dev;
 594         int qpn = priv->base_qpn;
 595
 596         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 597                 u64 mac = mlx4_mac_to_u64(IF_LLADDR(priv->dev));
 598                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 599                        IF_LLADDR(priv->dev));
 600                 mlx4_unregister_mac(dev, priv->port, mac);
 601         } else {
 602                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 603                        priv->port, qpn);
 604                 mlx4_qp_release_range(dev, qpn, 1);
 605                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 606         }
 607 }
 608
 609 static void mlx4_en_clear_uclist(struct net_device *dev)
 610 {
 611         struct mlx4_en_priv *priv = netdev_priv(dev);
 612         struct mlx4_en_addr_list *tmp, *uc_to_del;
 613
 614         list_for_each_entry_safe(uc_to_del, tmp, &priv->uc_list, list) {
 615                 list_del(&uc_to_del->list);
 616                 kfree(uc_to_del);
 617         }
 618 }
 619
 620 static u_int mlx4_copy_addr(void *arg, struct sockaddr_dl *sdl, u_int cnt)
 621 {
 622         struct mlx4_en_priv *priv = arg;
 623         struct mlx4_en_addr_list *tmp;
 624
 625         if (sdl->sdl_alen != ETHER_ADDR_LEN)    /* XXXGL: can that happen? */
 626                 return (0);
 627         tmp = kzalloc(sizeof(struct mlx4_en_addr_list), GFP_ATOMIC);
 628         if (tmp == NULL) {
 629                 en_err(priv, "Failed to allocate address list\n");
 630                 return (0);
 631         }
 632         memcpy(tmp->addr, LLADDR(sdl), ETH_ALEN);
 633         list_add_tail(&tmp->list, &priv->uc_list);
 634
 635         return (1);
 636 }
 637
 638 static void mlx4_en_cache_uclist(struct net_device *dev)
 639 {
 640         struct mlx4_en_priv *priv = netdev_priv(dev);
 641
 642         mlx4_en_clear_uclist(dev);
 643         if_foreach_lladdr(dev, mlx4_copy_addr, priv);
 644 }
 645
 646 static void mlx4_en_clear_mclist(struct net_device *dev)
 647 {
 648         struct mlx4_en_priv *priv = netdev_priv(dev);
 649         struct mlx4_en_addr_list *tmp, *mc_to_del;
 650
 651         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 652                 list_del(&mc_to_del->list);
 653                 kfree(mc_to_del);
 654         }
 655 }
 656
 657 static u_int mlx4_copy_maddr(void *arg, struct sockaddr_dl *sdl, u_int count)
 658 {
 659         struct mlx4_en_priv *priv = arg;
 660         struct mlx4_en_addr_list *tmp;
 661
 662         if (sdl->sdl_alen != ETHER_ADDR_LEN)    /* XXXGL: can that happen? */
 663                 return (0);
 664         tmp = kzalloc(sizeof(struct mlx4_en_addr_list), GFP_ATOMIC);
 665         if (tmp == NULL) {
 666                 en_err(priv, "Failed to allocate address list\n");
 667                 return (0);
 668         }
 669         memcpy(tmp->addr, LLADDR(sdl), ETH_ALEN);
 670         list_add_tail(&tmp->list, &priv->mc_list);
 671         return (1);
 672 }
 673
 674 static void mlx4_en_cache_mclist(struct net_device *dev)
 675 {
 676         struct mlx4_en_priv *priv = netdev_priv(dev);
 677
 678         mlx4_en_clear_mclist(dev);
 679         if_foreach_llmaddr(dev, mlx4_copy_maddr, priv);
 680 }
 681
 682 static void update_addr_list_flags(struct mlx4_en_priv *priv,
 683                                 struct list_head *dst,
 684                                 struct list_head *src)
 685 {
 686         struct mlx4_en_addr_list *dst_tmp, *src_tmp, *new_mc;
 687         bool found;
 688
 689         /* Find all the entries that should be removed from dst,
 690          * These are the entries that are not found in src
 691          */
 692         list_for_each_entry(dst_tmp, dst, list) {
 693                 found = false;
 694                 list_for_each_entry(src_tmp, src, list) {
 695                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 696                                 found = true;
 697                                 break;
 698                         }
 699                 }
 700                 if (!found)
 701                         dst_tmp->action = MLX4_ADDR_LIST_REM;
 702         }
 703
 704         /* Add entries that exist in src but not in dst
 705          * mark them as need to add
 706          */
 707         list_for_each_entry(src_tmp, src, list) {
 708                 found = false;
 709                 list_for_each_entry(dst_tmp, dst, list) {
 710                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 711                                 dst_tmp->action = MLX4_ADDR_LIST_NONE;
 712                                 found = true;
 713                                 break;
 714                         }
 715                 }
 716                 if (!found) {
 717                         new_mc = kmalloc(sizeof(struct mlx4_en_addr_list),
 718                                          GFP_KERNEL);
 719                         if (!new_mc) {
 720                                 en_err(priv, "Failed to allocate current multicast list\n");
 721                                 return;
 722                         }
 723                         memcpy(new_mc, src_tmp,
 724                                sizeof(struct mlx4_en_addr_list));
 725                         new_mc->action = MLX4_ADDR_LIST_ADD;
 726                         list_add_tail(&new_mc->list, dst);
 727                 }
 728         }
 729 }
 730
 731 static void mlx4_en_set_rx_mode(struct net_device *dev)
 732 {
 733         struct mlx4_en_priv *priv = netdev_priv(dev);
 734
 735         if (!priv->port_up)
 736                 return;
 737
 738         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 739 }
 740
 741 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 742                                      struct mlx4_en_dev *mdev)
 743 {
 744         int err = 0;
 745
 746         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 747                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 748
 749                 /* Enable promiscouos mode */
 750                 switch (mdev->dev->caps.steering_mode) {
 751                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 752                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 753                                                           priv->port,
 754                                                           priv->base_qpn,
 755                                                           MLX4_FS_ALL_DEFAULT);
 756                         if (err)
 757                                 en_err(priv, "Failed enabling promiscuous mode\n");
 758                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 759                         break;
 760
 761                 case MLX4_STEERING_MODE_B0:
 762                         err = mlx4_unicast_promisc_add(mdev->dev,
 763                                                        priv->base_qpn,
 764                                                        priv->port);
 765                         if (err)
 766                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 767
 768                         /* Add the default qp number as multicast
 769                          * promisc
 770                          */
 771                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 772                                 err = mlx4_multicast_promisc_add(mdev->dev,
 773                                                                  priv->base_qpn,
 774                                                                  priv->port);
 775                                 if (err)
 776                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 777                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 778                         }
 779                         break;
 780
 781                 case MLX4_STEERING_MODE_A0:
 782                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 783                                                      priv->port,
 784                                                      priv->base_qpn,
 785                                                      1);
 786                         if (err)
 787                                 en_err(priv, "Failed enabling promiscuous mode\n");
 788                         break;
 789                 }
 790
 791                 /* Disable port multicast filter (unconditionally) */
 792                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 793                                           0, MLX4_MCAST_DISABLE);
 794                 if (err)
 795                         en_err(priv, "Failed disabling multicast filter\n");
 796         }
 797 }
 798
 799 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 800                                        struct mlx4_en_dev *mdev)
 801 {
 802         int err = 0;
 803
 804         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 805
 806         /* Disable promiscouos mode */
 807         switch (mdev->dev->caps.steering_mode) {
 808         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 809                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 810                                                      priv->port,
 811                                                      MLX4_FS_ALL_DEFAULT);
 812                 if (err)
 813                         en_err(priv, "Failed disabling promiscuous mode\n");
 814                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 815                 break;
 816
 817         case MLX4_STEERING_MODE_B0:
 818                 err = mlx4_unicast_promisc_remove(mdev->dev,
 819                                                   priv->base_qpn,
 820                                                   priv->port);
 821                 if (err)
 822                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 823                 /* Disable Multicast promisc */
 824                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 825                         err = mlx4_multicast_promisc_remove(mdev->dev,
 826                                                             priv->base_qpn,
 827                                                             priv->port);
 828                         if (err)
 829                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 830                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 831                 }
 832                 break;
 833
 834         case MLX4_STEERING_MODE_A0:
 835                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 836                                              priv->port,
 837                                              priv->base_qpn, 0);
 838                 if (err)
 839                         en_err(priv, "Failed disabling promiscuous mode\n");
 840                 break;
 841         }
 842 }
 843
 844 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 845                                  struct net_device *dev,
 846                                  struct mlx4_en_dev *mdev)
 847 {
 848         struct mlx4_en_addr_list *addr_list, *tmp;
 849         u8 mc_list[16] = {0};
 850         int err = 0;
 851         u64 mcast_addr = 0;
 852
 853         /*
 854          * Enable/disable the multicast filter according to
 855          * IFF_ALLMULTI and IFF_PROMISC:
 856          */
 857         if (dev->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) {
 858                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 859                                           0, MLX4_MCAST_DISABLE);
 860                 if (err)
 861                         en_err(priv, "Failed disabling multicast filter\n");
 862
 863                 /* Add the default qp number as multicast promisc */
 864                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 865                         switch (mdev->dev->caps.steering_mode) {
 866                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 867                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
 868                                                                   priv->port,
 869                                                                   priv->base_qpn,
 870                                                                   MLX4_FS_MC_DEFAULT);
 871                                 break;
 872
 873                         case MLX4_STEERING_MODE_B0:
 874                                 err = mlx4_multicast_promisc_add(mdev->dev,
 875                                                                  priv->base_qpn,
 876                                                                  priv->port);
 877                                 break;
 878
 879                         case MLX4_STEERING_MODE_A0:
 880                                 break;
 881                         }
 882                         if (err)
 883                                 en_err(priv, "Failed entering multicast promisc mode\n");
 884                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 885                 }
 886         } else {
 887                 /* Disable Multicast promisc */
 888                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 889                         switch (mdev->dev->caps.steering_mode) {
 890                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 891                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 892                                                                      priv->port,
 893                                                                      MLX4_FS_MC_DEFAULT);
 894                                 break;
 895
 896                         case MLX4_STEERING_MODE_B0:
 897                                 err = mlx4_multicast_promisc_remove(mdev->dev,
 898                                                                     priv->base_qpn,
 899                                                                     priv->port);
 900                                 break;
 901
 902                         case MLX4_STEERING_MODE_A0:
 903                                 break;
 904                         }
 905                         if (err)
 906                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 907                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 908                 }
 909
 910                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 911                                           0, MLX4_MCAST_DISABLE);
 912                 if (err)
 913                         en_err(priv, "Failed disabling multicast filter\n");
 914
 915                 /* Flush mcast filter and init it with broadcast address */
 916                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
 917                                     1, MLX4_MCAST_CONFIG);
 918
 919                 /* Update multicast list - we cache all addresses so they won't
 920                  * change while HW is updated holding the command semaphor */
 921                 mlx4_en_cache_mclist(dev);
 922                 list_for_each_entry(addr_list, &priv->mc_list, list) {
 923                         mcast_addr = mlx4_mac_to_u64(addr_list->addr);
 924                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
 925                                         mcast_addr, 0, MLX4_MCAST_CONFIG);
 926                 }
 927                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 928                                           0, MLX4_MCAST_ENABLE);
 929                 if (err)
 930                         en_err(priv, "Failed enabling multicast filter\n");
 931
 932                 update_addr_list_flags(priv, &priv->curr_mc_list, &priv->mc_list);
 933
 934                 list_for_each_entry_safe(addr_list, tmp, &priv->curr_mc_list, list) {
 935                         if (addr_list->action == MLX4_ADDR_LIST_REM) {
 936                                 /* detach this address and delete from list */
 937                                 memcpy(&mc_list[10], addr_list->addr, ETH_ALEN);
 938                                 mc_list[5] = priv->port;
 939                                 err = mlx4_multicast_detach(mdev->dev,
 940                                                             &priv->rss_map.indir_qp,
 941                                                             mc_list,
 942                                                             MLX4_PROT_ETH,
 943                                                             addr_list->reg_id);
 944                                 if (err)
 945                                         en_err(priv, "Fail to detach multicast address\n");
 946
 947                                 if (addr_list->tunnel_reg_id) {
 948                                         err = mlx4_flow_detach(priv->mdev->dev, addr_list->tunnel_reg_id);
 949                                         if (err)
 950                                                 en_err(priv, "Failed to detach multicast address\n");
 951                                 }
 952
 953                                 /* remove from list */
 954                                 list_del(&addr_list->list);
 955                                 kfree(addr_list);
 956                         } else if (addr_list->action == MLX4_ADDR_LIST_ADD) {
 957                                 /* attach the address */
 958                                 memcpy(&mc_list[10], addr_list->addr, ETH_ALEN);
 959                                 /* needed for B0 steering support */
 960                                 mc_list[5] = priv->port;
 961                                 err = mlx4_multicast_attach(mdev->dev,
 962                                                             &priv->rss_map.indir_qp,
 963                                                             mc_list,
 964                                                             priv->port, 0,
 965                                                             MLX4_PROT_ETH,
 966                                                             &addr_list->reg_id);
 967                                 if (err)
 968                                         en_err(priv, "Fail to attach multicast address\n");
 969
 970                                 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
 971                                                                &addr_list->tunnel_reg_id);
 972                                 if (err)
 973                                         en_err(priv, "Failed to attach multicast address\n");
 974                         }
 975                 }
 976         }
 977 }
 978
 979 static void mlx4_en_do_unicast(struct mlx4_en_priv *priv,
 980                                struct net_device *dev,
 981                                struct mlx4_en_dev *mdev)
 982 {
 983         struct mlx4_en_addr_list *addr_list, *tmp;
 984         int err;
 985
 986         /* Update unicast list */
 987         mlx4_en_cache_uclist(dev);
 988
 989         update_addr_list_flags(priv, &priv->curr_uc_list, &priv->uc_list);
 990
 991         list_for_each_entry_safe(addr_list, tmp, &priv->curr_uc_list, list) {
 992                 if (addr_list->action == MLX4_ADDR_LIST_REM) {
 993                         mlx4_en_uc_steer_release(priv, addr_list->addr,
 994                                                  priv->rss_map.indir_qp.qpn,
 995                                                  addr_list->reg_id);
 996                         /* remove from list */
 997                         list_del(&addr_list->list);
 998                         kfree(addr_list);
 999                 } else if (addr_list->action == MLX4_ADDR_LIST_ADD) {
1000                         err = mlx4_en_uc_steer_add(priv, addr_list->addr,
1001                                                    &priv->rss_map.indir_qp.qpn,
1002                                                    &addr_list->reg_id);
1003                         if (err)
1004                                 en_err(priv, "Fail to add unicast address\n");
1005                 }
1006         }
1007 }
1008
1009 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1010 {
1011         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1012                                                  rx_mode_task);
1013         struct mlx4_en_dev *mdev = priv->mdev;
1014         struct net_device *dev = priv->dev;
1015
1016         mutex_lock(&mdev->state_lock);
1017         if (!mdev->device_up) {
1018                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1019                 goto out;
1020         }
1021         if (!priv->port_up) {
1022                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1023                 goto out;
1024         }
1025         if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1026                 if (priv->port_state.link_state) {
1027                         priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1028                         /* update netif baudrate */
1029                         priv->dev->if_baudrate =
1030                             IF_Mbps(priv->port_state.link_speed);
1031                         /* Important note: the following call for if_link_state_change
1032                          * is needed for interface up scenario (start port, link state
1033                          * change) */
1034                         if_link_state_change(priv->dev, LINK_STATE_UP);
1035                         en_dbg(HW, priv, "Link Up\n");
1036                 }
1037         }
1038
1039         /* Set unicast rules */
1040         mlx4_en_do_unicast(priv, dev, mdev);
1041
1042         /* Promsicuous mode: disable all filters */
1043         if ((dev->if_flags & IFF_PROMISC) ||
1044             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1045                 mlx4_en_set_promisc_mode(priv, mdev);
1046         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1047                 /* Not in promiscuous mode */
1048                 mlx4_en_clear_promisc_mode(priv, mdev);
1049         }
1050
1051         /* Set multicast rules */
1052         mlx4_en_do_multicast(priv, dev, mdev);
1053 out:
1054         mutex_unlock(&mdev->state_lock);
1055 }
1056
1057 static void mlx4_en_watchdog_timeout(void *arg)
1058 {
1059         struct mlx4_en_priv *priv = arg;
1060         struct mlx4_en_dev *mdev = priv->mdev;
1061
1062         en_dbg(DRV, priv, "Scheduling watchdog\n");
1063         queue_work(mdev->workqueue, &priv->watchdog_task);
1064         if (priv->port_up)
1065                 callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
1066                                 mlx4_en_watchdog_timeout, priv);
1067 }
1068
1069
1070
1071 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1072 {
1073         struct mlx4_en_cq *cq;
1074         int i;
1075
1076         /* If we haven't received a specific coalescing setting
1077          * (module param), we set the moderation parameters as follows:
1078          * - moder_cnt is set to the number of mtu sized packets to
1079          *   satisfy our coalescing target.
1080          * - moder_time is set to a fixed value.
1081          */
1082         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1083         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1084         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1085         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1086         en_dbg(INTR, priv, "Default coalesing params for mtu: %u - "
1087                "rx_frames:%d rx_usecs:%d\n",
1088                (unsigned)priv->dev->if_mtu, priv->rx_frames, priv->rx_usecs);
1089
1090         /* Setup cq moderation params */
1091         for (i = 0; i < priv->rx_ring_num; i++) {
1092                 cq = priv->rx_cq[i];
1093                 cq->moder_cnt = priv->rx_frames;
1094                 cq->moder_time = priv->rx_usecs;
1095                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1096                 priv->last_moder_packets[i] = 0;
1097                 priv->last_moder_bytes[i] = 0;
1098         }
1099
1100         for (i = 0; i < priv->tx_ring_num; i++) {
1101                 cq = priv->tx_cq[i];
1102                 cq->moder_cnt = priv->tx_frames;
1103                 cq->moder_time = priv->tx_usecs;
1104         }
1105
1106         /* Reset auto-moderation params */
1107         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1108         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1109         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1110         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1111         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1112         priv->adaptive_rx_coal = 1;
1113         priv->last_moder_jiffies = 0;
1114         priv->last_moder_tx_packets = 0;
1115 }
1116
1117 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1118 {
1119         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1120         struct mlx4_en_cq *cq;
1121         unsigned long packets;
1122         unsigned long rate;
1123         unsigned long avg_pkt_size;
1124         unsigned long rx_packets;
1125         unsigned long rx_bytes;
1126         unsigned long rx_pkt_diff;
1127         int moder_time;
1128         int ring, err;
1129
1130         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1131                 return;
1132
1133         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1134                 spin_lock(&priv->stats_lock);
1135                 rx_packets = priv->rx_ring[ring]->packets;
1136                 rx_bytes = priv->rx_ring[ring]->bytes;
1137                 spin_unlock(&priv->stats_lock);
1138
1139                 rx_pkt_diff = ((unsigned long) (rx_packets -
1140                                 priv->last_moder_packets[ring]));
1141                 packets = rx_pkt_diff;
1142                 rate = packets * HZ / period;
1143                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1144                                 priv->last_moder_bytes[ring])) / packets : 0;
1145
1146                 /* Apply auto-moderation only when packet rate
1147                  * exceeds a rate that it matters */
1148                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1149                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1150                         if (rate < priv->pkt_rate_low)
1151                                 moder_time = priv->rx_usecs_low;
1152                         else if (rate > priv->pkt_rate_high)
1153                                 moder_time = priv->rx_usecs_high;
1154                         else
1155                                 moder_time = (rate - priv->pkt_rate_low) *
1156                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1157                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
1158                                         priv->rx_usecs_low;
1159                 } else {
1160                         moder_time = priv->rx_usecs_low;
1161                 }
1162
1163                 if (moder_time != priv->last_moder_time[ring]) {
1164                         priv->last_moder_time[ring] = moder_time;
1165                         cq = priv->rx_cq[ring];
1166                         cq->moder_time = moder_time;
1167                         cq->moder_cnt = priv->rx_frames;
1168                         err = mlx4_en_set_cq_moder(priv, cq);
1169                         if (err)
1170                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1171                                        ring);
1172                 }
1173                 priv->last_moder_packets[ring] = rx_packets;
1174                 priv->last_moder_bytes[ring] = rx_bytes;
1175         }
1176
1177         priv->last_moder_jiffies = jiffies;
1178 }
1179
1180 static void mlx4_en_do_get_stats(struct work_struct *work)
1181 {
1182         struct delayed_work *delay = to_delayed_work(work);
1183         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1184                                                  stats_task);
1185         struct mlx4_en_dev *mdev = priv->mdev;
1186         int err;
1187
1188         mutex_lock(&mdev->state_lock);
1189         if (mdev->device_up) {
1190                 if (priv->port_up) {
1191                         if (mlx4_is_slave(mdev->dev))
1192                                 err = mlx4_en_get_vport_stats(mdev, priv->port);
1193                         else
1194                                 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1195                         if (err)
1196                                 en_dbg(HW, priv, "Could not update stats\n");
1197
1198                         mlx4_en_auto_moderation(priv);
1199                 }
1200
1201                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1202         }
1203         mutex_unlock(&mdev->state_lock);
1204 }
1205
1206 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1207  * periodically
1208  */
1209 static void mlx4_en_service_task(struct work_struct *work)
1210 {
1211         struct delayed_work *delay = to_delayed_work(work);
1212         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1213                                                  service_task);
1214         struct mlx4_en_dev *mdev = priv->mdev;
1215
1216         mutex_lock(&mdev->state_lock);
1217         if (mdev->device_up) {
1218                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1219                                    SERVICE_TASK_DELAY);
1220         }
1221         mutex_unlock(&mdev->state_lock);
1222 }
1223
1224 static void mlx4_en_linkstate(struct work_struct *work)
1225 {
1226         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1227                                                  linkstate_task);
1228         struct mlx4_en_dev *mdev = priv->mdev;
1229         int linkstate = priv->link_state;
1230
1231         mutex_lock(&mdev->state_lock);
1232         /* If observable port state changed set carrier state and
1233          * report to system log */
1234         if (priv->last_link_state != linkstate) {
1235                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1236                         en_info(priv, "Link Down\n");
1237                         if_link_state_change(priv->dev, LINK_STATE_DOWN);
1238                         /* update netif baudrate */
1239                         priv->dev->if_baudrate = 0;
1240
1241                 /* make sure the port is up before notifying the OS.
1242                  * This is tricky since we get here on INIT_PORT and
1243                  * in such case we can't tell the OS the port is up.
1244                  * To solve this there is a call to if_link_state_change
1245                  * in set_rx_mode.
1246                  * */
1247                 } else if (priv->port_up && (linkstate == MLX4_DEV_EVENT_PORT_UP)){
1248                         if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
1249                                 en_info(priv, "Query port failed\n");
1250                         priv->dev->if_baudrate =
1251                             IF_Mbps(priv->port_state.link_speed);
1252                         en_info(priv, "Link Up\n");
1253                         if_link_state_change(priv->dev, LINK_STATE_UP);
1254                 }
1255         }
1256         priv->last_link_state = linkstate;
1257         mutex_unlock(&mdev->state_lock);
1258 }
1259
1260
1261 int mlx4_en_start_port(struct net_device *dev)
1262 {
1263         struct mlx4_en_priv *priv = netdev_priv(dev);
1264         struct mlx4_en_dev *mdev = priv->mdev;
1265         struct mlx4_en_cq *cq;
1266         struct mlx4_en_tx_ring *tx_ring;
1267         int rx_index = 0;
1268         int tx_index = 0;
1269         int err = 0;
1270         int i;
1271         int j;
1272         u8 mc_list[16] = {0};
1273
1274
1275         if (priv->port_up) {
1276                 en_dbg(DRV, priv, "start port called while port already up\n");
1277                 return 0;
1278         }
1279
1280         INIT_LIST_HEAD(&priv->mc_list);
1281         INIT_LIST_HEAD(&priv->uc_list);
1282         INIT_LIST_HEAD(&priv->curr_mc_list);
1283         INIT_LIST_HEAD(&priv->curr_uc_list);
1284         INIT_LIST_HEAD(&priv->ethtool_list);
1285
1286         /* Calculate Rx buf size */
1287         dev->if_mtu = min(dev->if_mtu, priv->max_mtu);
1288         mlx4_en_calc_rx_buf(dev);
1289         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_mb_size);
1290
1291         /* Configure rx cq's and rings */
1292         err = mlx4_en_activate_rx_rings(priv);
1293         if (err) {
1294                 en_err(priv, "Failed to activate RX rings\n");
1295                 return err;
1296         }
1297         for (i = 0; i < priv->rx_ring_num; i++) {
1298                 cq = priv->rx_cq[i];
1299
1300                 mlx4_en_cq_init_lock(cq);
1301                 err = mlx4_en_activate_cq(priv, cq, i);
1302                 if (err) {
1303                         en_err(priv, "Failed activating Rx CQ\n");
1304                         goto cq_err;
1305                 }
1306                 for (j = 0; j < cq->size; j++)
1307                         cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1308                 err = mlx4_en_set_cq_moder(priv, cq);
1309                 if (err) {
1310                         en_err(priv, "Failed setting cq moderation parameters");
1311                         mlx4_en_deactivate_cq(priv, cq);
1312                         goto cq_err;
1313                 }
1314                 mlx4_en_arm_cq(priv, cq);
1315                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1316                 ++rx_index;
1317         }
1318
1319         /* Set qp number */
1320         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1321         err = mlx4_en_get_qp(priv);
1322         if (err) {
1323                 en_err(priv, "Failed getting eth qp\n");
1324                 goto cq_err;
1325         }
1326         mdev->mac_removed[priv->port] = 0;
1327
1328         priv->counter_index =
1329                         mlx4_get_default_counter_index(mdev->dev, priv->port);
1330
1331         err = mlx4_en_config_rss_steer(priv);
1332         if (err) {
1333                 en_err(priv, "Failed configuring rss steering\n");
1334                 goto mac_err;
1335         }
1336
1337         err = mlx4_en_create_drop_qp(priv);
1338         if (err)
1339                 goto rss_err;
1340
1341         /* Configure tx cq's and rings */
1342         for (i = 0; i < priv->tx_ring_num; i++) {
1343                 /* Configure cq */
1344                 cq = priv->tx_cq[i];
1345                 err = mlx4_en_activate_cq(priv, cq, i);
1346                 if (err) {
1347                         en_err(priv, "Failed activating Tx CQ\n");
1348                         goto tx_err;
1349                 }
1350                 err = mlx4_en_set_cq_moder(priv, cq);
1351                 if (err) {
1352                         en_err(priv, "Failed setting cq moderation parameters");
1353                         mlx4_en_deactivate_cq(priv, cq);
1354                         goto tx_err;
1355                 }
1356                 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1357                 cq->buf->wqe_index = cpu_to_be16(0xffff);
1358
1359                 /* Configure ring */
1360                 tx_ring = priv->tx_ring[i];
1361
1362                 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1363                                                i / priv->num_tx_rings_p_up);
1364                 if (err) {
1365                         en_err(priv, "Failed activating Tx ring %d\n", i);
1366                         mlx4_en_deactivate_cq(priv, cq);
1367                         goto tx_err;
1368                 }
1369
1370                 /* Arm CQ for TX completions */
1371                 mlx4_en_arm_cq(priv, cq);
1372
1373                 /* Set initial ownership of all Tx TXBBs to SW (1) */
1374                 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1375                         *((u32 *) (tx_ring->buf + j)) = INIT_OWNER_BIT;
1376                 ++tx_index;
1377         }
1378
1379         /* Configure port */
1380         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1381                                     priv->rx_mb_size,
1382                                     priv->prof->tx_pause,
1383                                     priv->prof->tx_ppp,
1384                                     priv->prof->rx_pause,
1385                                     priv->prof->rx_ppp);
1386         if (err) {
1387                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1388                        priv->port, err);
1389                 goto tx_err;
1390         }
1391         /* Set default qp number */
1392         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1393         if (err) {
1394                 en_err(priv, "Failed setting default qp numbers\n");
1395                 goto tx_err;
1396         }
1397
1398         /* Init port */
1399         en_dbg(HW, priv, "Initializing port\n");
1400         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1401         if (err) {
1402                 en_err(priv, "Failed Initializing port\n");
1403                 goto tx_err;
1404         }
1405
1406         /* Attach rx QP to bradcast address */
1407         memset(&mc_list[10], 0xff, ETH_ALEN);
1408         mc_list[5] = priv->port; /* needed for B0 steering support */
1409         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1410                                   priv->port, 0, MLX4_PROT_ETH,
1411                                   &priv->broadcast_id))
1412                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1413
1414         /* Must redo promiscuous mode setup. */
1415         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1416
1417         /* Schedule multicast task to populate multicast list */
1418         queue_work(mdev->workqueue, &priv->rx_mode_task);
1419
1420         priv->port_up = true;
1421
1422         /* Enable the queues. */
1423         dev->if_drv_flags &= ~IFF_DRV_OACTIVE;
1424         dev->if_drv_flags |= IFF_DRV_RUNNING;
1425 #ifdef CONFIG_DEBUG_FS
1426         mlx4_en_create_debug_files(priv);
1427 #endif
1428         callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
1429                     mlx4_en_watchdog_timeout, priv);
1430
1431
1432         return 0;
1433
1434 tx_err:
1435         while (tx_index--) {
1436                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1437                 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1438         }
1439         mlx4_en_destroy_drop_qp(priv);
1440 rss_err:
1441         mlx4_en_release_rss_steer(priv);
1442 mac_err:
1443         mlx4_en_put_qp(priv);
1444 cq_err:
1445         while (rx_index--)
1446                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1447         for (i = 0; i < priv->rx_ring_num; i++)
1448                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1449
1450         return err; /* need to close devices */
1451 }
1452
1453
1454 void mlx4_en_stop_port(struct net_device *dev)
1455 {
1456         struct mlx4_en_priv *priv = netdev_priv(dev);
1457         struct mlx4_en_dev *mdev = priv->mdev;
1458         struct mlx4_en_addr_list *addr_list, *tmp;
1459         int i;
1460         u8 mc_list[16] = {0};
1461
1462         if (!priv->port_up) {
1463                 en_dbg(DRV, priv, "stop port called while port already down\n");
1464                 return;
1465         }
1466
1467 #ifdef CONFIG_DEBUG_FS
1468         mlx4_en_delete_debug_files(priv);
1469 #endif
1470
1471         /* close port*/
1472         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1473
1474         /* Set port as not active */
1475         priv->port_up = false;
1476         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1477
1478         /* Promsicuous mode */
1479         if (mdev->dev->caps.steering_mode ==
1480             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1481                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1482                                  MLX4_EN_FLAG_MC_PROMISC);
1483                 mlx4_flow_steer_promisc_remove(mdev->dev,
1484                                                priv->port,
1485                                                MLX4_FS_ALL_DEFAULT);
1486                 mlx4_flow_steer_promisc_remove(mdev->dev,
1487                                                priv->port,
1488                                                MLX4_FS_MC_DEFAULT);
1489         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1490                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1491
1492                 /* Disable promiscouos mode */
1493                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1494                                             priv->port);
1495
1496                 /* Disable Multicast promisc */
1497                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1498                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1499                                                       priv->port);
1500                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1501                 }
1502         }
1503
1504         /* Detach All unicasts */
1505         list_for_each_entry(addr_list, &priv->curr_uc_list, list) {
1506                 mlx4_en_uc_steer_release(priv, addr_list->addr,
1507                                          priv->rss_map.indir_qp.qpn,
1508                                          addr_list->reg_id);
1509         }
1510         mlx4_en_clear_uclist(dev);
1511         list_for_each_entry_safe(addr_list, tmp, &priv->curr_uc_list, list) {
1512                 list_del(&addr_list->list);
1513                 kfree(addr_list);
1514         }
1515
1516         /* Detach All multicasts */
1517         memset(&mc_list[10], 0xff, ETH_ALEN);
1518         mc_list[5] = priv->port; /* needed for B0 steering support */
1519         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1520                               MLX4_PROT_ETH, priv->broadcast_id);
1521         list_for_each_entry(addr_list, &priv->curr_mc_list, list) {
1522                 memcpy(&mc_list[10], addr_list->addr, ETH_ALEN);
1523                 mc_list[5] = priv->port;
1524                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1525                                       mc_list, MLX4_PROT_ETH, addr_list->reg_id);
1526         }
1527         mlx4_en_clear_mclist(dev);
1528         list_for_each_entry_safe(addr_list, tmp, &priv->curr_mc_list, list) {
1529                 list_del(&addr_list->list);
1530                 kfree(addr_list);
1531         }
1532
1533         /* Flush multicast filter */
1534         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1535         mlx4_en_destroy_drop_qp(priv);
1536
1537         /* Free TX Rings */
1538         for (i = 0; i < priv->tx_ring_num; i++) {
1539                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1540                 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1541         }
1542         msleep(10);
1543
1544         for (i = 0; i < priv->tx_ring_num; i++)
1545                 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1546
1547         /* Free RSS qps */
1548         mlx4_en_release_rss_steer(priv);
1549
1550         /* Unregister Mac address for the port */
1551         mlx4_en_put_qp(priv);
1552         mdev->mac_removed[priv->port] = 1;
1553
1554         /* Free RX Rings */
1555         for (i = 0; i < priv->rx_ring_num; i++) {
1556                 struct mlx4_en_cq *cq = priv->rx_cq[i];
1557                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1558                 mlx4_en_deactivate_cq(priv, cq);
1559         }
1560
1561         callout_stop(&priv->watchdog_timer);
1562
1563         dev->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1564 }
1565
1566 static void mlx4_en_restart(struct work_struct *work)
1567 {
1568         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1569                                                  watchdog_task);
1570         struct mlx4_en_dev *mdev = priv->mdev;
1571         struct net_device *dev = priv->dev;
1572         struct mlx4_en_tx_ring *ring;
1573         int i;
1574
1575
1576         if (priv->blocked == 0 || priv->port_up == 0)
1577                 return;
1578         for (i = 0; i < priv->tx_ring_num; i++) {
1579                 int watchdog_time;
1580
1581                 ring = priv->tx_ring[i];
1582                 watchdog_time = READ_ONCE(ring->watchdog_time);
1583                 if (watchdog_time != 0 &&
1584                     time_after(ticks, ring->watchdog_time))
1585                         goto reset;
1586         }
1587         return;
1588
1589 reset:
1590         priv->port_stats.tx_timeout++;
1591         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1592
1593         mutex_lock(&mdev->state_lock);
1594         if (priv->port_up) {
1595                 mlx4_en_stop_port(dev);
1596                 //for (i = 0; i < priv->tx_ring_num; i++)
1597                 //        netdev_tx_reset_queue(priv->tx_ring[i]->tx_queue);
1598                 if (mlx4_en_start_port(dev))
1599                         en_err(priv, "Failed restarting port %d\n", priv->port);
1600         }
1601         mutex_unlock(&mdev->state_lock);
1602 }
1603
1604 static void mlx4_en_clear_stats(struct net_device *dev)
1605 {
1606         struct mlx4_en_priv *priv = netdev_priv(dev);
1607         struct mlx4_en_dev *mdev = priv->mdev;
1608         int i;
1609
1610         if (!mlx4_is_slave(mdev->dev))
1611                 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1612                         en_dbg(HW, priv, "Failed dumping statistics\n");
1613
1614         memset(&priv->pstats, 0, sizeof(priv->pstats));
1615         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1616         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1617         memset(&priv->vport_stats, 0, sizeof(priv->vport_stats));
1618
1619         for (i = 0; i < priv->tx_ring_num; i++) {
1620                 priv->tx_ring[i]->bytes = 0;
1621                 priv->tx_ring[i]->packets = 0;
1622                 priv->tx_ring[i]->tx_csum = 0;
1623                 priv->tx_ring[i]->oversized_packets = 0;
1624         }
1625         for (i = 0; i < priv->rx_ring_num; i++) {
1626                 priv->rx_ring[i]->bytes = 0;
1627                 priv->rx_ring[i]->packets = 0;
1628                 priv->rx_ring[i]->csum_ok = 0;
1629                 priv->rx_ring[i]->csum_none = 0;
1630         }
1631 }
1632
1633 static void mlx4_en_open(void* arg)
1634 {
1635
1636         struct mlx4_en_priv *priv;
1637         struct mlx4_en_dev *mdev;
1638         struct net_device *dev;
1639         int err = 0;
1640
1641         priv = arg;
1642         mdev = priv->mdev;
1643         dev = priv->dev;
1644
1645
1646         mutex_lock(&mdev->state_lock);
1647
1648         if (!mdev->device_up) {
1649                 en_err(priv, "Cannot open - device down/disabled\n");
1650                 goto out;
1651         }
1652
1653         /* Reset HW statistics and SW counters */
1654         mlx4_en_clear_stats(dev);
1655
1656         err = mlx4_en_start_port(dev);
1657         if (err)
1658                 en_err(priv, "Failed starting port:%d\n", priv->port);
1659
1660 out:
1661         mutex_unlock(&mdev->state_lock);
1662         return;
1663 }
1664
1665 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1666 {
1667         int i;
1668
1669 #ifdef CONFIG_RFS_ACCEL
1670         if (priv->dev->rx_cpu_rmap) {
1671                 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1672                 priv->dev->rx_cpu_rmap = NULL;
1673         }
1674 #endif
1675
1676         for (i = 0; i < priv->tx_ring_num; i++) {
1677                 if (priv->tx_ring && priv->tx_ring[i])
1678                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1679                 if (priv->tx_cq && priv->tx_cq[i])
1680                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1681         }
1682
1683         for (i = 0; i < priv->rx_ring_num; i++) {
1684                 if (priv->rx_ring[i])
1685                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1686                                 priv->prof->rx_ring_size);
1687                 if (priv->rx_cq[i])
1688                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1689         }
1690
1691         if (priv->stat_sysctl != NULL)
1692                 sysctl_ctx_free(&priv->stat_ctx);
1693 }
1694
1695 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1696 {
1697         struct mlx4_en_port_profile *prof = priv->prof;
1698         int i;
1699         int node = 0;
1700
1701         /* Create rx Rings */
1702         for (i = 0; i < priv->rx_ring_num; i++) {
1703                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
1704                                       prof->rx_ring_size, i, RX, node))
1705                         goto err;
1706
1707                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
1708                                            prof->rx_ring_size, node))
1709                         goto err;
1710         }
1711
1712         /* Create tx Rings */
1713         for (i = 0; i < priv->tx_ring_num; i++) {
1714                 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1715                                       prof->tx_ring_size, i, TX, node))
1716                         goto err;
1717
1718                 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
1719                                            prof->tx_ring_size, TXBB_SIZE, node, i))
1720                         goto err;
1721         }
1722
1723 #ifdef CONFIG_RFS_ACCEL
1724         priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->rx_ring_num);
1725         if (!priv->dev->rx_cpu_rmap)
1726                 goto err;
1727 #endif
1728         /* Re-create stat sysctls in case the number of rings changed. */
1729         mlx4_en_sysctl_stat(priv);
1730         return 0;
1731
1732 err:
1733         en_err(priv, "Failed to allocate NIC resources\n");
1734         for (i = 0; i < priv->rx_ring_num; i++) {
1735                 if (priv->rx_ring[i])
1736                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1737                                                 prof->rx_ring_size);
1738                 if (priv->rx_cq[i])
1739                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1740         }
1741         for (i = 0; i < priv->tx_ring_num; i++) {
1742                 if (priv->tx_ring[i])
1743                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1744                 if (priv->tx_cq[i])
1745                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1746         }
1747         priv->port_up = false;
1748         return -ENOMEM;
1749 }
1750
1751 struct en_port_attribute {
1752         struct attribute attr;
1753         ssize_t (*show)(struct en_port *, struct en_port_attribute *, char *buf);
1754         ssize_t (*store)(struct en_port *, struct en_port_attribute *, char *buf, size_t count);
1755 };
1756
1757 #define PORT_ATTR_RO(_name) \
1758 struct en_port_attribute en_port_attr_##_name = __ATTR_RO(_name)
1759
1760 #define EN_PORT_ATTR(_name, _mode, _show, _store) \
1761 struct en_port_attribute en_port_attr_##_name = __ATTR(_name, _mode, _show, _store)
1762
1763 void mlx4_en_destroy_netdev(struct net_device *dev)
1764 {
1765         struct mlx4_en_priv *priv = netdev_priv(dev);
1766         struct mlx4_en_dev *mdev = priv->mdev;
1767
1768         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
1769
1770         /* don't allow more IOCTLs */
1771         priv->gone = 1;
1772
1773         /* XXX wait a bit to allow IOCTL handlers to complete */
1774         pause("W", hz);
1775
1776         if (priv->vlan_attach != NULL)
1777                 EVENTHANDLER_DEREGISTER(vlan_config, priv->vlan_attach);
1778         if (priv->vlan_detach != NULL)
1779                 EVENTHANDLER_DEREGISTER(vlan_unconfig, priv->vlan_detach);
1780
1781         mutex_lock(&mdev->state_lock);
1782         mlx4_en_stop_port(dev);
1783         mutex_unlock(&mdev->state_lock);
1784
1785         /* Unregister device - this will close the port if it was up */
1786         if (priv->registered)
1787                 ether_ifdetach(dev);
1788
1789         if (priv->allocated)
1790                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
1791
1792         cancel_delayed_work(&priv->stats_task);
1793         cancel_delayed_work(&priv->service_task);
1794         /* flush any pending task for this netdev */
1795         flush_workqueue(mdev->workqueue);
1796         callout_drain(&priv->watchdog_timer);
1797
1798         /* Detach the netdev so tasks would not attempt to access it */
1799         mutex_lock(&mdev->state_lock);
1800         mdev->pndev[priv->port] = NULL;
1801         mutex_unlock(&mdev->state_lock);
1802
1803
1804         mlx4_en_free_resources(priv);
1805
1806         /* freeing the sysctl conf cannot be called from within mlx4_en_free_resources */
1807         if (priv->conf_sysctl != NULL)
1808                 sysctl_ctx_free(&priv->conf_ctx);
1809
1810         kfree(priv->tx_ring);
1811         kfree(priv->tx_cq);
1812
1813         kfree(priv);
1814         if_free(dev);
1815
1816 }
1817
1818 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
1819 {
1820         struct mlx4_en_priv *priv = netdev_priv(dev);
1821         struct mlx4_en_dev *mdev = priv->mdev;
1822         int err = 0;
1823
1824         en_dbg(DRV, priv, "Change MTU called - current:%u new:%u\n",
1825                (unsigned)dev->if_mtu, (unsigned)new_mtu);
1826
1827         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
1828                 en_err(priv, "Bad MTU size:%d, max %u.\n", new_mtu,
1829                     priv->max_mtu);
1830                 return -EPERM;
1831         }
1832         mutex_lock(&mdev->state_lock);
1833         dev->if_mtu = new_mtu;
1834         if (dev->if_drv_flags & IFF_DRV_RUNNING) {
1835                 if (!mdev->device_up) {
1836                         /* NIC is probably restarting - let watchdog task reset
1837                          *                          * the port */
1838                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
1839                 } else {
1840                         mlx4_en_stop_port(dev);
1841                         err = mlx4_en_start_port(dev);
1842                         if (err) {
1843                                 en_err(priv, "Failed restarting port:%d\n",
1844                                                 priv->port);
1845                                 queue_work(mdev->workqueue, &priv->watchdog_task);
1846                         }
1847                 }
1848         }
1849         mutex_unlock(&mdev->state_lock);
1850         return 0;
1851 }
1852
1853 static int mlx4_en_calc_media(struct mlx4_en_priv *priv)
1854 {
1855         int trans_type;
1856         int active;
1857
1858         active = IFM_ETHER;
1859         if (priv->last_link_state == MLX4_DEV_EVENT_PORT_DOWN)
1860                 return (active);
1861         active |= IFM_FDX;
1862         trans_type = priv->port_state.transceiver;
1863         /* XXX I don't know all of the transceiver values. */
1864         switch (priv->port_state.link_speed) {
1865         case 100:
1866                 active |= IFM_100_T;
1867                 break;
1868         case 1000:
1869                 active |= IFM_1000_T;
1870                 break;
1871         case 10000:
1872                 if (trans_type > 0 && trans_type <= 0xC)
1873                         active |= IFM_10G_SR;
1874                 else if (trans_type == 0x80 || trans_type == 0)
1875                         active |= IFM_10G_CX4;
1876                 break;
1877         case 40000:
1878                 active |= IFM_40G_CR4;
1879                 break;
1880         }
1881         if (priv->prof->tx_pause)
1882                 active |= IFM_ETH_TXPAUSE;
1883         if (priv->prof->rx_pause)
1884                 active |= IFM_ETH_RXPAUSE;
1885
1886         return (active);
1887 }
1888
1889 static void mlx4_en_media_status(struct ifnet *dev, struct ifmediareq *ifmr)
1890 {
1891         struct mlx4_en_priv *priv;
1892
1893         priv = dev->if_softc;
1894         ifmr->ifm_status = IFM_AVALID;
1895         if (priv->last_link_state != MLX4_DEV_EVENT_PORT_DOWN)
1896                 ifmr->ifm_status |= IFM_ACTIVE;
1897         ifmr->ifm_active = mlx4_en_calc_media(priv);
1898
1899         return;
1900 }
1901
1902 static int mlx4_en_media_change(struct ifnet *dev)
1903 {
1904         struct mlx4_en_priv *priv;
1905         struct ifmedia *ifm;
1906         int rxpause;
1907         int txpause;
1908         int error;
1909
1910         priv = dev->if_softc;
1911         ifm = &priv->media;
1912         rxpause = txpause = 0;
1913         error = 0;
1914
1915         if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1916                 return (EINVAL);
1917         switch (IFM_SUBTYPE(ifm->ifm_media)) {
1918         case IFM_AUTO:
1919                 break;
1920         case IFM_10G_SR:
1921         case IFM_10G_CX4:
1922         case IFM_1000_T:
1923         case IFM_40G_CR4:
1924                 if ((IFM_SUBTYPE(ifm->ifm_media)
1925                         == IFM_SUBTYPE(mlx4_en_calc_media(priv)))
1926                         && (ifm->ifm_media & IFM_FDX))
1927                         break;
1928                 /* Fallthrough */
1929         default:
1930                 printf("%s: Only auto media type\n", if_name(dev));
1931                 return (EINVAL);
1932         }
1933         /* Allow user to set/clear pause */
1934         if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_RXPAUSE)
1935                 rxpause = 1;
1936         if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_TXPAUSE)
1937                 txpause = 1;
1938         if (priv->prof->tx_pause != txpause || priv->prof->rx_pause != rxpause) {
1939                 priv->prof->tx_pause = txpause;
1940                 priv->prof->rx_pause = rxpause;
1941                 error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
1942                      priv->rx_mb_size + ETHER_CRC_LEN, priv->prof->tx_pause,
1943                      priv->prof->tx_ppp, priv->prof->rx_pause,
1944                      priv->prof->rx_ppp);
1945         }
1946         return (error);
1947 }
1948
1949 static int mlx4_en_ioctl(struct ifnet *dev, u_long command, caddr_t data)
1950 {
1951         struct mlx4_en_priv *priv;
1952         struct mlx4_en_dev *mdev;
1953         struct ifreq *ifr;
1954         int error;
1955         int mask;
1956         struct ifrsskey *ifrk;
1957         const u32 *key;
1958         struct ifrsshash *ifrh;
1959         u8 rss_mask;
1960
1961         error = 0;
1962         mask = 0;
1963         priv = dev->if_softc;
1964
1965         /* check if detaching */
1966         if (priv == NULL || priv->gone != 0)
1967                 return (ENXIO);
1968
1969         mdev = priv->mdev;
1970         ifr = (struct ifreq *) data;
1971
1972         switch (command) {
1973         case SIOCSIFMTU:
1974                 error = -mlx4_en_change_mtu(dev, ifr->ifr_mtu);
1975                 break;
1976         case SIOCSIFFLAGS:
1977                 if (dev->if_flags & IFF_UP) {
1978                         if ((dev->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1979                                 mutex_lock(&mdev->state_lock);
1980                                 mlx4_en_start_port(dev);
1981                                 mutex_unlock(&mdev->state_lock);
1982                         } else {
1983                                 mlx4_en_set_rx_mode(dev);
1984                         }
1985                 } else {
1986                         mutex_lock(&mdev->state_lock);
1987                         if (dev->if_drv_flags & IFF_DRV_RUNNING) {
1988                                 mlx4_en_stop_port(dev);
1989                                 if_link_state_change(dev, LINK_STATE_DOWN);
1990                         }
1991                         mutex_unlock(&mdev->state_lock);
1992                 }
1993                 break;
1994         case SIOCADDMULTI:
1995         case SIOCDELMULTI:
1996                 mlx4_en_set_rx_mode(dev);
1997                 break;
1998         case SIOCSIFMEDIA:
1999         case SIOCGIFMEDIA:
2000                 error = ifmedia_ioctl(dev, ifr, &priv->media, command);
2001                 break;
2002         case SIOCSIFCAP:
2003                 mutex_lock(&mdev->state_lock);
2004                 mask = ifr->ifr_reqcap ^ dev->if_capenable;
2005                 if (mask & IFCAP_TXCSUM) {
2006                         dev->if_capenable ^= IFCAP_TXCSUM;
2007                         dev->if_hwassist ^= (CSUM_TCP | CSUM_UDP | CSUM_IP);
2008
2009                         if (IFCAP_TSO4 & dev->if_capenable &&
2010                             !(IFCAP_TXCSUM & dev->if_capenable)) {
2011                                 mask &= ~IFCAP_TSO4;
2012                                 dev->if_capenable &= ~IFCAP_TSO4;
2013                                 dev->if_hwassist &= ~CSUM_IP_TSO;
2014                                 if_printf(dev,
2015                                     "tso4 disabled due to -txcsum.\n");
2016                         }
2017                 }
2018                 if (mask & IFCAP_TXCSUM_IPV6) {
2019                         dev->if_capenable ^= IFCAP_TXCSUM_IPV6;
2020                         dev->if_hwassist ^= (CSUM_UDP_IPV6 | CSUM_TCP_IPV6);
2021
2022                         if (IFCAP_TSO6 & dev->if_capenable &&
2023                             !(IFCAP_TXCSUM_IPV6 & dev->if_capenable)) {
2024                                 mask &= ~IFCAP_TSO6;
2025                                 dev->if_capenable &= ~IFCAP_TSO6;
2026                                 dev->if_hwassist &= ~CSUM_IP6_TSO;
2027                                 if_printf(dev,
2028                                     "tso6 disabled due to -txcsum6.\n");
2029                         }
2030                 }
2031                 if (mask & IFCAP_RXCSUM)
2032                         dev->if_capenable ^= IFCAP_RXCSUM;
2033                 if (mask & IFCAP_RXCSUM_IPV6)
2034                         dev->if_capenable ^= IFCAP_RXCSUM_IPV6;
2035
2036                 if (mask & IFCAP_TSO4) {
2037                         if (!(IFCAP_TSO4 & dev->if_capenable) &&
2038                             !(IFCAP_TXCSUM & dev->if_capenable)) {
2039                                 if_printf(dev, "enable txcsum first.\n");
2040                                 error = EAGAIN;
2041                                 goto out;
2042                         }
2043                         dev->if_capenable ^= IFCAP_TSO4;
2044                         dev->if_hwassist ^= CSUM_IP_TSO;
2045                 }
2046                 if (mask & IFCAP_TSO6) {
2047                         if (!(IFCAP_TSO6 & dev->if_capenable) &&
2048                             !(IFCAP_TXCSUM_IPV6 & dev->if_capenable)) {
2049                                 if_printf(dev, "enable txcsum6 first.\n");
2050                                 error = EAGAIN;
2051                                 goto out;
2052                         }
2053                         dev->if_capenable ^= IFCAP_TSO6;
2054                         dev->if_hwassist ^= CSUM_IP6_TSO;
2055                 }
2056                 if (mask & IFCAP_LRO)
2057                         dev->if_capenable ^= IFCAP_LRO;
2058                 if (mask & IFCAP_VLAN_HWTAGGING)
2059                         dev->if_capenable ^= IFCAP_VLAN_HWTAGGING;
2060                 if (mask & IFCAP_VLAN_HWFILTER)
2061                         dev->if_capenable ^= IFCAP_VLAN_HWFILTER;
2062                 if (mask & IFCAP_WOL_MAGIC)
2063                         dev->if_capenable ^= IFCAP_WOL_MAGIC;
2064                 if (dev->if_drv_flags & IFF_DRV_RUNNING)
2065                         mlx4_en_start_port(dev);
2066 out:
2067                 mutex_unlock(&mdev->state_lock);
2068                 VLAN_CAPABILITIES(dev);
2069                 break;
2070 #if __FreeBSD_version >= 1100036
2071         case SIOCGI2C: {
2072                 struct ifi2creq i2c;
2073
2074                 error = copyin(ifr_data_get_ptr(ifr), &i2c, sizeof(i2c));
2075                 if (error)
2076                         break;
2077                 if (i2c.len > sizeof(i2c.data)) {
2078                         error = EINVAL;
2079                         break;
2080                 }
2081                 /*
2082                  * Note that we ignore i2c.addr here. The driver hardcodes
2083                  * the address to 0x50, while standard expects it to be 0xA0.
2084                  */
2085                 error = mlx4_get_module_info(mdev->dev, priv->port,
2086                     i2c.offset, i2c.len, i2c.data);
2087                 if (error < 0) {
2088                         error = -error;
2089                         break;
2090                 }
2091                 error = copyout(&i2c, ifr_data_get_ptr(ifr), sizeof(i2c));
2092                 break;
2093         }
2094 #endif
2095         case SIOCGIFRSSKEY:
2096                 ifrk = (struct ifrsskey *)data;
2097                 ifrk->ifrk_func = RSS_FUNC_TOEPLITZ;
2098                 mutex_lock(&mdev->state_lock);
2099                 key = mlx4_en_get_rss_key(priv, &ifrk->ifrk_keylen);
2100                 if (ifrk->ifrk_keylen > RSS_KEYLEN)
2101                         error = EINVAL;
2102                 else
2103                         memcpy(ifrk->ifrk_key, key, ifrk->ifrk_keylen);
2104                 mutex_unlock(&mdev->state_lock);
2105                 break;
2106
2107         case SIOCGIFRSSHASH:
2108                 mutex_lock(&mdev->state_lock);
2109                 rss_mask = mlx4_en_get_rss_mask(priv);
2110                 mutex_unlock(&mdev->state_lock);
2111                 ifrh = (struct ifrsshash *)data;
2112                 ifrh->ifrh_func = RSS_FUNC_TOEPLITZ;
2113                 ifrh->ifrh_types = 0;
2114                 if (rss_mask & MLX4_RSS_IPV4)
2115                         ifrh->ifrh_types |= RSS_TYPE_IPV4;
2116                 if (rss_mask & MLX4_RSS_TCP_IPV4)
2117                         ifrh->ifrh_types |= RSS_TYPE_TCP_IPV4;
2118                 if (rss_mask & MLX4_RSS_IPV6)
2119                         ifrh->ifrh_types |= RSS_TYPE_IPV6;
2120                 if (rss_mask & MLX4_RSS_TCP_IPV6)
2121                         ifrh->ifrh_types |= RSS_TYPE_TCP_IPV6;
2122                 if (rss_mask & MLX4_RSS_UDP_IPV4)
2123                         ifrh->ifrh_types |= RSS_TYPE_UDP_IPV4;
2124                 if (rss_mask & MLX4_RSS_UDP_IPV6)
2125                         ifrh->ifrh_types |= RSS_TYPE_UDP_IPV6;
2126                 break;
2127
2128         default:
2129                 error = ether_ioctl(dev, command, data);
2130                 break;
2131         }
2132
2133         return (error);
2134 }
2135
2136
2137 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2138                         struct mlx4_en_port_profile *prof)
2139 {
2140         struct net_device *dev;
2141         struct mlx4_en_priv *priv;
2142         uint8_t dev_addr[ETHER_ADDR_LEN];
2143         int err;
2144         int i;
2145
2146         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
2147         dev = priv->dev = if_alloc(IFT_ETHER);
2148         if (dev == NULL) {
2149                 en_err(priv, "Net device allocation failed\n");
2150                 kfree(priv);
2151                 return -ENOMEM;
2152         }
2153         dev->if_softc = priv;
2154         if_initname(dev, "mlxen", (device_get_unit(
2155             mdev->pdev->dev.bsddev) * MLX4_MAX_PORTS) + port - 1);
2156         dev->if_mtu = ETHERMTU;
2157         dev->if_init = mlx4_en_open;
2158         dev->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
2159         dev->if_ioctl = mlx4_en_ioctl;
2160         dev->if_transmit = mlx4_en_transmit;
2161         dev->if_qflush = mlx4_en_qflush;
2162         dev->if_snd.ifq_maxlen = prof->tx_ring_size;
2163
2164         /*
2165          * Initialize driver private data
2166          */
2167         priv->counter_index = 0xff;
2168         spin_lock_init(&priv->stats_lock);
2169         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2170         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2171         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2172         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2173         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2174         callout_init(&priv->watchdog_timer, 1);
2175 #ifdef CONFIG_RFS_ACCEL
2176         INIT_LIST_HEAD(&priv->filters);
2177         spin_lock_init(&priv->filters_lock);
2178 #endif
2179
2180         priv->msg_enable = MLX4_EN_MSG_LEVEL;
2181         priv->dev = dev;
2182         priv->mdev = mdev;
2183         priv->ddev = &mdev->pdev->dev;
2184         priv->prof = prof;
2185         priv->port = port;
2186         priv->port_up = false;
2187         priv->flags = prof->flags;
2188
2189         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2190         priv->tx_ring_num = prof->tx_ring_num;
2191         priv->tx_ring = kcalloc(MAX_TX_RINGS,
2192                                 sizeof(struct mlx4_en_tx_ring *), GFP_KERNEL);
2193         if (!priv->tx_ring) {
2194                 err = -ENOMEM;
2195                 goto out;
2196         }
2197         priv->tx_cq = kcalloc(sizeof(struct mlx4_en_cq *), MAX_TX_RINGS,
2198                         GFP_KERNEL);
2199         if (!priv->tx_cq) {
2200                 err = -ENOMEM;
2201                 goto out;
2202         }
2203
2204         priv->rx_ring_num = prof->rx_ring_num;
2205         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2206         priv->mac_index = -1;
2207         priv->last_ifq_jiffies = 0;
2208         priv->if_counters_rx_errors = 0;
2209         priv->if_counters_rx_no_buffer = 0;
2210 #ifdef CONFIG_MLX4_EN_DCB
2211         if (!mlx4_is_slave(priv->mdev->dev)) {
2212                 priv->dcbx_cap = DCB_CAP_DCBX_HOST;
2213                 priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
2214                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
2215                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2216                 } else {
2217                         en_info(priv, "QoS disabled - no HW support\n");
2218                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2219                 }
2220         }
2221 #endif
2222
2223         /* Query for default mac and max mtu */
2224         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2225         priv->mac = mdev->dev->caps.def_mac[priv->port];
2226         if (ILLEGAL_MAC(priv->mac)) {
2227 #if BITS_PER_LONG == 64
2228                 en_err(priv, "Port: %d, invalid mac burned: 0x%lx, quiting\n",
2229                                 priv->port, priv->mac);
2230 #elif BITS_PER_LONG == 32
2231                 en_err(priv, "Port: %d, invalid mac burned: 0x%llx, quiting\n",
2232                                 priv->port, priv->mac);
2233 #endif
2234                 err = -EINVAL;
2235                 goto out;
2236         }
2237
2238         mlx4_en_sysctl_conf(priv);
2239
2240         err = mlx4_en_alloc_resources(priv);
2241         if (err)
2242                 goto out;
2243
2244         /* Allocate page for receive rings */
2245         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2246                                 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2247         if (err) {
2248                 en_err(priv, "Failed to allocate page for rx qps\n");
2249                 goto out;
2250         }
2251         priv->allocated = 1;
2252
2253         /*
2254          * Set driver features
2255          */
2256         dev->if_capabilities |= IFCAP_HWCSUM | IFCAP_HWCSUM_IPV6;
2257         dev->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING;
2258         dev->if_capabilities |= IFCAP_VLAN_HWCSUM | IFCAP_VLAN_HWFILTER;
2259         dev->if_capabilities |= IFCAP_LINKSTATE | IFCAP_JUMBO_MTU;
2260         dev->if_capabilities |= IFCAP_LRO;
2261         dev->if_capabilities |= IFCAP_HWSTATS;
2262
2263         if (mdev->LSO_support)
2264                 dev->if_capabilities |= IFCAP_TSO4 | IFCAP_TSO6 | IFCAP_VLAN_HWTSO;
2265
2266 #if __FreeBSD_version >= 1100000
2267         /* set TSO limits so that we don't have to drop TX packets */
2268         dev->if_hw_tsomax = MLX4_EN_TX_MAX_PAYLOAD_SIZE - (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN) /* hdr */;
2269         dev->if_hw_tsomaxsegcount = MLX4_EN_TX_MAX_MBUF_FRAGS - 1 /* hdr */;
2270         dev->if_hw_tsomaxsegsize = MLX4_EN_TX_MAX_MBUF_SIZE;
2271 #endif
2272
2273         dev->if_capenable = dev->if_capabilities;
2274
2275         dev->if_hwassist = 0;
2276         if (dev->if_capenable & (IFCAP_TSO4 | IFCAP_TSO6))
2277                 dev->if_hwassist |= CSUM_TSO;
2278         if (dev->if_capenable & IFCAP_TXCSUM)
2279                 dev->if_hwassist |= (CSUM_TCP | CSUM_UDP | CSUM_IP);
2280         if (dev->if_capenable & IFCAP_TXCSUM_IPV6)
2281                 dev->if_hwassist |= (CSUM_UDP_IPV6 | CSUM_TCP_IPV6);
2282
2283
2284         /* Register for VLAN events */
2285         priv->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
2286             mlx4_en_vlan_rx_add_vid, priv, EVENTHANDLER_PRI_FIRST);
2287         priv->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
2288             mlx4_en_vlan_rx_kill_vid, priv, EVENTHANDLER_PRI_FIRST);
2289
2290         mdev->pndev[priv->port] = dev;
2291
2292         priv->last_link_state = MLX4_DEV_EVENT_PORT_DOWN;
2293         mlx4_en_set_default_moderation(priv);
2294
2295         /* Set default MAC */
2296         for (i = 0; i < ETHER_ADDR_LEN; i++)
2297                 dev_addr[ETHER_ADDR_LEN - 1 - i] = (u8) (priv->mac >> (8 * i));
2298
2299
2300         ether_ifattach(dev, dev_addr);
2301         if_link_state_change(dev, LINK_STATE_DOWN);
2302         ifmedia_init(&priv->media, IFM_IMASK | IFM_ETH_FMASK,
2303             mlx4_en_media_change, mlx4_en_media_status);
2304         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_1000_T, 0, NULL);
2305         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_SR, 0, NULL);
2306         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_CX4, 0, NULL);
2307         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_40G_CR4, 0, NULL);
2308         ifmedia_add(&priv->media, IFM_ETHER | IFM_AUTO, 0, NULL);
2309         ifmedia_set(&priv->media, IFM_ETHER | IFM_AUTO);
2310
2311         DEBUGNET_SET(dev, mlx4_en);
2312
2313         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2314         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2315
2316         priv->registered = 1;
2317
2318         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2319         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2320
2321
2322         priv->rx_mb_size = dev->if_mtu + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN;
2323         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2324                                     priv->rx_mb_size,
2325                                     prof->tx_pause, prof->tx_ppp,
2326                                     prof->rx_pause, prof->rx_ppp);
2327         if (err) {
2328                 en_err(priv, "Failed setting port general configurations "
2329                        "for port %d, with error %d\n", priv->port, err);
2330                 goto out;
2331         }
2332
2333         /* Init port */
2334         en_warn(priv, "Initializing port\n");
2335         err = mlx4_INIT_PORT(mdev->dev, priv->port);
2336         if (err) {
2337                 en_err(priv, "Failed Initializing port\n");
2338                 goto out;
2339         }
2340
2341         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2342
2343         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2344                 queue_delayed_work(mdev->workqueue, &priv->service_task, SERVICE_TASK_DELAY);
2345
2346         return 0;
2347
2348 out:
2349         mlx4_en_destroy_netdev(dev);
2350         return err;
2351 }
2352
2353 static int mlx4_en_set_ring_size(struct net_device *dev,
2354     int rx_size, int tx_size)
2355 {
2356         struct mlx4_en_priv *priv = netdev_priv(dev);
2357         struct mlx4_en_dev *mdev = priv->mdev;
2358         int port_up = 0;
2359         int err = 0;
2360
2361         rx_size = roundup_pow_of_two(rx_size);
2362         rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE);
2363         rx_size = min_t(u32, rx_size, MLX4_EN_MAX_RX_SIZE);
2364         tx_size = roundup_pow_of_two(tx_size);
2365         tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE);
2366         tx_size = min_t(u32, tx_size, MLX4_EN_MAX_TX_SIZE);
2367
2368         if (rx_size == (priv->port_up ?
2369             priv->rx_ring[0]->actual_size : priv->rx_ring[0]->size) &&
2370             tx_size == priv->tx_ring[0]->size)
2371                 return 0;
2372         mutex_lock(&mdev->state_lock);
2373         if (priv->port_up) {
2374                 port_up = 1;
2375                 mlx4_en_stop_port(dev);
2376         }
2377         mlx4_en_free_resources(priv);
2378         priv->prof->tx_ring_size = tx_size;
2379         priv->prof->rx_ring_size = rx_size;
2380         err = mlx4_en_alloc_resources(priv);
2381         if (err) {
2382                 en_err(priv, "Failed reallocating port resources\n");
2383                 goto out;
2384         }
2385         if (port_up) {
2386                 err = mlx4_en_start_port(dev);
2387                 if (err)
2388                         en_err(priv, "Failed starting port\n");
2389         }
2390 out:
2391         mutex_unlock(&mdev->state_lock);
2392         return err;
2393 }
2394 static int mlx4_en_set_rx_ring_size(SYSCTL_HANDLER_ARGS)
2395 {
2396         struct mlx4_en_priv *priv;
2397         int size;
2398         int error;
2399
2400         priv = arg1;
2401         size = priv->prof->rx_ring_size;
2402         error = sysctl_handle_int(oidp, &size, 0, req);
2403         if (error || !req->newptr)
2404                 return (error);
2405         error = -mlx4_en_set_ring_size(priv->dev, size,
2406             priv->prof->tx_ring_size);
2407         return (error);
2408 }
2409
2410 static int mlx4_en_set_tx_ring_size(SYSCTL_HANDLER_ARGS)
2411 {
2412         struct mlx4_en_priv *priv;
2413         int size;
2414         int error;
2415
2416         priv = arg1;
2417         size = priv->prof->tx_ring_size;
2418         error = sysctl_handle_int(oidp, &size, 0, req);
2419         if (error || !req->newptr)
2420                 return (error);
2421         error = -mlx4_en_set_ring_size(priv->dev, priv->prof->rx_ring_size,
2422             size);
2423
2424         return (error);
2425 }
2426
2427 static int mlx4_en_get_module_info(struct net_device *dev,
2428                                    struct ethtool_modinfo *modinfo)
2429 {
2430         struct mlx4_en_priv *priv = netdev_priv(dev);
2431         struct mlx4_en_dev *mdev = priv->mdev;
2432         int ret;
2433         u8 data[4];
2434
2435         /* Read first 2 bytes to get Module & REV ID */
2436         ret = mlx4_get_module_info(mdev->dev, priv->port,
2437                                    0/*offset*/, 2/*size*/, data);
2438
2439         if (ret < 2) {
2440                 en_err(priv, "Failed to read eeprom module first two bytes, error: 0x%x\n", -ret);
2441                 return -EIO;
2442         }
2443
2444         switch (data[0] /* identifier */) {
2445         case MLX4_MODULE_ID_QSFP:
2446                 modinfo->type = ETH_MODULE_SFF_8436;
2447                 modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
2448                 break;
2449         case MLX4_MODULE_ID_QSFP_PLUS:
2450                 if (data[1] >= 0x3) { /* revision id */
2451                         modinfo->type = ETH_MODULE_SFF_8636;
2452                         modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
2453                 } else {
2454                         modinfo->type = ETH_MODULE_SFF_8436;
2455                         modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
2456                 }
2457                 break;
2458         case MLX4_MODULE_ID_QSFP28:
2459                 modinfo->type = ETH_MODULE_SFF_8636;
2460                 modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
2461                 break;
2462         case MLX4_MODULE_ID_SFP:
2463                 modinfo->type = ETH_MODULE_SFF_8472;
2464                 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
2465                 break;
2466         default:
2467                 en_err(priv, "mlx4_en_get_module_info :  Not recognized cable type\n");
2468                 return -EINVAL;
2469         }
2470
2471         return 0;
2472 }
2473
2474 static int mlx4_en_get_module_eeprom(struct net_device *dev,
2475                                      struct ethtool_eeprom *ee,
2476                                      u8 *data)
2477 {
2478         struct mlx4_en_priv *priv = netdev_priv(dev);
2479         struct mlx4_en_dev *mdev = priv->mdev;
2480         int offset = ee->offset;
2481         int i = 0, ret;
2482
2483         if (ee->len == 0)
2484                 return -EINVAL;
2485
2486         memset(data, 0, ee->len);
2487
2488         while (i < ee->len) {
2489                 en_dbg(DRV, priv,
2490                        "mlx4_get_module_info i(%d) offset(%d) len(%d)\n",
2491                        i, offset, ee->len - i);
2492
2493                 ret = mlx4_get_module_info(mdev->dev, priv->port,
2494                                            offset, ee->len - i, data + i);
2495
2496                 if (!ret) /* Done reading */
2497                         return 0;
2498
2499                 if (ret < 0) {
2500                         en_err(priv,
2501                                "mlx4_get_module_info i(%d) offset(%d) bytes_to_read(%d) - FAILED (0x%x)\n",
2502                                i, offset, ee->len - i, ret);
2503                         return -1;
2504                 }
2505
2506                 i += ret;
2507                 offset += ret;
2508         }
2509         return 0;
2510 }
2511
2512 static void mlx4_en_print_eeprom(u8 *data, __u32 len)
2513 {
2514         int             i;
2515         int             j = 0;
2516         int             row = 0;
2517         const int       NUM_OF_BYTES = 16;
2518
2519         printf("\nOffset\t\tValues\n");
2520         printf("------\t\t------\n");
2521         while(row < len){
2522                 printf("0x%04x\t\t",row);
2523                 for(i=0; i < NUM_OF_BYTES; i++){
2524                         printf("%02x ", data[j]);
2525                         row++;
2526                         j++;
2527                 }
2528                 printf("\n");
2529         }
2530 }
2531
2532 /* Read cable EEPROM module information by first inspecting the first
2533  * two bytes to get the length and then read the rest of the information.
2534  * The information is printed to dmesg. */
2535 static int mlx4_en_read_eeprom(SYSCTL_HANDLER_ARGS)
2536 {
2537
2538         u8*             data;
2539         int             error;
2540         int             result = 0;
2541         struct          mlx4_en_priv *priv;
2542         struct          net_device *dev;
2543         struct          ethtool_modinfo modinfo;
2544         struct          ethtool_eeprom ee;
2545
2546         error = sysctl_handle_int(oidp, &result, 0, req);
2547         if (error || !req->newptr)
2548                 return (error);
2549
2550         if (result == 1) {
2551                 priv = arg1;
2552                 dev = priv->dev;
2553                 data = kmalloc(PAGE_SIZE, GFP_KERNEL);
2554
2555                 error = mlx4_en_get_module_info(dev, &modinfo);
2556                 if (error) {
2557                         en_err(priv,
2558                                "mlx4_en_get_module_info returned with error - FAILED (0x%x)\n",
2559                                -error);
2560                         goto out;
2561                 }
2562
2563                 ee.len = modinfo.eeprom_len;
2564                 ee.offset = 0;
2565
2566                 error = mlx4_en_get_module_eeprom(dev, &ee, data);
2567                 if (error) {
2568                         en_err(priv,
2569                                "mlx4_en_get_module_eeprom returned with error - FAILED (0x%x)\n",
2570                                -error);
2571                         /* Continue printing partial information in case of an error */
2572                 }
2573
2574                 /* EEPROM information will be printed in dmesg */
2575                 mlx4_en_print_eeprom(data, ee.len);
2576 out:
2577                 kfree(data);
2578         }
2579         /* Return zero to prevent sysctl failure. */
2580         return (0);
2581 }
2582
2583 static int mlx4_en_set_tx_ppp(SYSCTL_HANDLER_ARGS)
2584 {
2585         struct mlx4_en_priv *priv;
2586         int ppp;
2587         int error;
2588
2589         priv = arg1;
2590         ppp = priv->prof->tx_ppp;
2591         error = sysctl_handle_int(oidp, &ppp, 0, req);
2592         if (error || !req->newptr)
2593                 return (error);
2594         if (ppp > 0xff || ppp < 0)
2595                 return (-EINVAL);
2596         priv->prof->tx_ppp = ppp;
2597         error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
2598                                        priv->rx_mb_size + ETHER_CRC_LEN,
2599                                        priv->prof->tx_pause,
2600                                        priv->prof->tx_ppp,
2601                                        priv->prof->rx_pause,
2602                                        priv->prof->rx_ppp);
2603
2604         return (error);
2605 }
2606
2607 static int mlx4_en_set_rx_ppp(SYSCTL_HANDLER_ARGS)
2608 {
2609         struct mlx4_en_priv *priv;
2610         struct mlx4_en_dev *mdev;
2611         int ppp;
2612         int error;
2613         int port_up;
2614
2615         port_up = 0;
2616         priv = arg1;
2617         mdev = priv->mdev;
2618         ppp = priv->prof->rx_ppp;
2619         error = sysctl_handle_int(oidp, &ppp, 0, req);
2620         if (error || !req->newptr)
2621                 return (error);
2622         if (ppp > 0xff || ppp < 0)
2623                 return (-EINVAL);
2624         /* See if we have to change the number of tx queues. */
2625         if (!ppp != !priv->prof->rx_ppp) {
2626                 mutex_lock(&mdev->state_lock);
2627                 if (priv->port_up) {
2628                         port_up = 1;
2629                         mlx4_en_stop_port(priv->dev);
2630                 }
2631                 mlx4_en_free_resources(priv);
2632                 priv->prof->rx_ppp = ppp;
2633                 error = -mlx4_en_alloc_resources(priv);
2634                 if (error)
2635                         en_err(priv, "Failed reallocating port resources\n");
2636                 if (error == 0 && port_up) {
2637                         error = -mlx4_en_start_port(priv->dev);
2638                         if (error)
2639                                 en_err(priv, "Failed starting port\n");
2640                 }
2641                 mutex_unlock(&mdev->state_lock);
2642                 return (error);
2643
2644         }
2645         priv->prof->rx_ppp = ppp;
2646         error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
2647                                        priv->rx_mb_size + ETHER_CRC_LEN,
2648                                        priv->prof->tx_pause,
2649                                        priv->prof->tx_ppp,
2650                                        priv->prof->rx_pause,
2651                                        priv->prof->rx_ppp);
2652
2653         return (error);
2654 }
2655
2656 static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv)
2657 {
2658         struct net_device *dev;
2659         struct sysctl_ctx_list *ctx;
2660         struct sysctl_oid *node;
2661         struct sysctl_oid_list *node_list;
2662         struct sysctl_oid *coal;
2663         struct sysctl_oid_list *coal_list;
2664         const char *pnameunit;
2665         dev = priv->dev;
2666         ctx = &priv->conf_ctx;
2667         pnameunit = device_get_nameunit(priv->mdev->pdev->dev.bsddev);
2668
2669         sysctl_ctx_init(ctx);
2670         priv->conf_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw),
2671             OID_AUTO, dev->if_xname, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
2672             "mlx4 10gig ethernet");
2673         node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->conf_sysctl), OID_AUTO,
2674             "conf", CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "Configuration");
2675         node_list = SYSCTL_CHILDREN(node);
2676
2677         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "msg_enable",
2678             CTLFLAG_RW, &priv->msg_enable, 0,
2679             "Driver message enable bitfield");
2680         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_rings",
2681             CTLFLAG_RD, &priv->rx_ring_num, 0,
2682             "Number of receive rings");
2683         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_rings",
2684             CTLFLAG_RD, &priv->tx_ring_num, 0,
2685             "Number of transmit rings");
2686         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_size",
2687             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2688             mlx4_en_set_rx_ring_size, "I", "Receive ring size");
2689         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_size",
2690             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2691             mlx4_en_set_tx_ring_size, "I", "Transmit ring size");
2692         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_ppp",
2693             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2694             mlx4_en_set_tx_ppp, "I", "TX Per-priority pause");
2695         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_ppp",
2696             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2697             mlx4_en_set_rx_ppp, "I", "RX Per-priority pause");
2698         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "port_num",
2699             CTLFLAG_RD, &priv->port, 0,
2700             "Port Number");
2701         SYSCTL_ADD_STRING(ctx, node_list, OID_AUTO, "device_name",
2702             CTLFLAG_RD, __DECONST(void *, pnameunit), 0,
2703             "PCI device name");
2704         /* Add coalescer configuration. */
2705         coal = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO,
2706             "coalesce", CTLFLAG_RD | CTLFLAG_MPSAFE, NULL,
2707             "Interrupt coalesce configuration");
2708         coal_list = SYSCTL_CHILDREN(coal);
2709         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_low",
2710             CTLFLAG_RW, &priv->pkt_rate_low, 0,
2711             "Packets per-second for minimum delay");
2712         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_low",
2713             CTLFLAG_RW, &priv->rx_usecs_low, 0,
2714             "Minimum RX delay in micro-seconds");
2715         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_high",
2716             CTLFLAG_RW, &priv->pkt_rate_high, 0,
2717             "Packets per-second for maximum delay");
2718         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_high",
2719             CTLFLAG_RW, &priv->rx_usecs_high, 0,
2720             "Maximum RX delay in micro-seconds");
2721         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "sample_interval",
2722             CTLFLAG_RW, &priv->sample_interval, 0,
2723             "adaptive frequency in units of HZ ticks");
2724         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "adaptive_rx_coal",
2725             CTLFLAG_RW, &priv->adaptive_rx_coal, 0,
2726             "Enable adaptive rx coalescing");
2727         /* EEPROM support */
2728         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "eeprom_info",
2729             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2730             mlx4_en_read_eeprom, "I", "EEPROM information");
2731 }
2732
2733 static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv)
2734 {
2735         struct sysctl_ctx_list *ctx;
2736         struct sysctl_oid_list *node_list;
2737         struct sysctl_oid *ring_node;
2738         struct sysctl_oid_list *ring_list;
2739         struct mlx4_en_tx_ring *tx_ring;
2740         struct mlx4_en_rx_ring *rx_ring;
2741         char namebuf[128];
2742         int i;
2743
2744         ctx = &priv->stat_ctx;
2745         sysctl_ctx_init(ctx);
2746         priv->stat_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->conf_sysctl), OID_AUTO,
2747             "stat", CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "Statistics");
2748         node_list = SYSCTL_CHILDREN(priv->stat_sysctl);
2749
2750 #ifdef MLX4_EN_PERF_STAT
2751         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_poll", CTLFLAG_RD,
2752             &priv->pstats.tx_poll, "TX Poll calls");
2753         SYSCTL_ADD_QUAD(ctx, node_list, OID_AUTO, "tx_pktsz_avg", CTLFLAG_RD,
2754             &priv->pstats.tx_pktsz_avg, "TX average packet size");
2755         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "inflight_avg", CTLFLAG_RD,
2756             &priv->pstats.inflight_avg, "TX average packets in-flight");
2757         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_coal_avg", CTLFLAG_RD,
2758             &priv->pstats.tx_coal_avg, "TX average coalesced completions");
2759         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_coal_avg", CTLFLAG_RD,
2760             &priv->pstats.rx_coal_avg, "RX average coalesced completions");
2761 #endif
2762
2763         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tso_packets", CTLFLAG_RD,
2764             &priv->port_stats.tso_packets, 0, "TSO packets sent");
2765         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "queue_stopped", CTLFLAG_RD,
2766             &priv->port_stats.queue_stopped, 0, "Queue full");
2767         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "wake_queue", CTLFLAG_RD,
2768             &priv->port_stats.wake_queue, 0, "Queue resumed after full");
2769         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_timeout", CTLFLAG_RD,
2770             &priv->port_stats.tx_timeout, 0, "Transmit timeouts");
2771         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_oversized_packets", CTLFLAG_RD,
2772             &priv->port_stats.oversized_packets, 0, "TX oversized packets, m_defrag failed");
2773         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_alloc_failed", CTLFLAG_RD,
2774             &priv->port_stats.rx_alloc_failed, 0, "RX failed to allocate mbuf");
2775         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_chksum_good", CTLFLAG_RD,
2776             &priv->port_stats.rx_chksum_good, 0, "RX checksum offload success");
2777         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_chksum_none", CTLFLAG_RD,
2778             &priv->port_stats.rx_chksum_none, 0, "RX without checksum offload");
2779         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_chksum_offload",
2780             CTLFLAG_RD, &priv->port_stats.tx_chksum_offload, 0,
2781             "TX checksum offloads");
2782         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "defrag_attempts",
2783             CTLFLAG_RD, &priv->port_stats.defrag_attempts, 0,
2784             "Oversized chains defragged");
2785
2786         /* Could strdup the names and add in a loop.  This is simpler. */
2787         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_bytes", CTLFLAG_RD,
2788             &priv->pkstats.rx_bytes, 0, "RX Bytes");
2789         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_packets", CTLFLAG_RD,
2790             &priv->pkstats.rx_packets, 0, "RX packets");
2791         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_multicast_packets", CTLFLAG_RD,
2792             &priv->pkstats.rx_multicast_packets, 0, "RX Multicast Packets");
2793         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_broadcast_packets", CTLFLAG_RD,
2794             &priv->pkstats.rx_broadcast_packets, 0, "RX Broadcast Packets");
2795         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_errors", CTLFLAG_RD,
2796             &priv->pkstats.rx_errors, 0, "RX Errors");
2797         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_dropped", CTLFLAG_RD,
2798             &priv->pkstats.rx_dropped, 0, "RX Dropped");
2799         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_length_errors", CTLFLAG_RD,
2800             &priv->pkstats.rx_length_errors, 0, "RX Length Errors");
2801         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_over_errors", CTLFLAG_RD,
2802             &priv->pkstats.rx_over_errors, 0, "RX Over Errors");
2803         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_crc_errors", CTLFLAG_RD,
2804             &priv->pkstats.rx_crc_errors, 0, "RX CRC Errors");
2805         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_jabbers", CTLFLAG_RD,
2806             &priv->pkstats.rx_jabbers, 0, "RX Jabbers");
2807
2808         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_in_range_length_error", CTLFLAG_RD,
2809             &priv->pkstats.rx_in_range_length_error, 0, "RX IN_Range Length Error");
2810         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_out_range_length_error",
2811             CTLFLAG_RD, &priv->pkstats.rx_out_range_length_error, 0,
2812             "RX Out Range Length Error");
2813         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_lt_64_bytes_packets", CTLFLAG_RD,
2814             &priv->pkstats.rx_lt_64_bytes_packets, 0, "RX Lt 64 Bytes Packets");
2815         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_127_bytes_packets", CTLFLAG_RD,
2816             &priv->pkstats.rx_127_bytes_packets, 0, "RX 127 bytes Packets");
2817         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_255_bytes_packets", CTLFLAG_RD,
2818             &priv->pkstats.rx_255_bytes_packets, 0, "RX 255 bytes Packets");
2819         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_511_bytes_packets", CTLFLAG_RD,
2820             &priv->pkstats.rx_511_bytes_packets, 0, "RX 511 bytes Packets");
2821         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_1023_bytes_packets", CTLFLAG_RD,
2822             &priv->pkstats.rx_1023_bytes_packets, 0, "RX 1023 bytes Packets");
2823         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_1518_bytes_packets", CTLFLAG_RD,
2824             &priv->pkstats.rx_1518_bytes_packets, 0, "RX 1518 bytes Packets");
2825         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_1522_bytes_packets", CTLFLAG_RD,
2826             &priv->pkstats.rx_1522_bytes_packets, 0, "RX 1522 bytes Packets");
2827         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_1548_bytes_packets", CTLFLAG_RD,
2828             &priv->pkstats.rx_1548_bytes_packets, 0, "RX 1548 bytes Packets");
2829         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_gt_1548_bytes_packets", CTLFLAG_RD,
2830             &priv->pkstats.rx_gt_1548_bytes_packets, 0,
2831             "RX Greater Then 1548 bytes Packets");
2832
2833         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_packets", CTLFLAG_RD,
2834             &priv->pkstats.tx_packets, 0, "TX packets");
2835         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_bytes", CTLFLAG_RD,
2836             &priv->pkstats.tx_bytes, 0, "TX Bytes");
2837         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_multicast_packets", CTLFLAG_RD,
2838             &priv->pkstats.tx_multicast_packets, 0, "TX Multicast Packets");
2839         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_broadcast_packets", CTLFLAG_RD,
2840             &priv->pkstats.tx_broadcast_packets, 0, "TX Broadcast Packets");
2841         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_errors", CTLFLAG_RD,
2842             &priv->pkstats.tx_errors, 0, "TX Errors");
2843         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_dropped", CTLFLAG_RD,
2844             &priv->pkstats.tx_dropped, 0, "TX Dropped");
2845         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_lt_64_bytes_packets", CTLFLAG_RD,
2846             &priv->pkstats.tx_lt_64_bytes_packets, 0, "TX Less Then 64 Bytes Packets");
2847         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_127_bytes_packets", CTLFLAG_RD,
2848             &priv->pkstats.tx_127_bytes_packets, 0, "TX 127 Bytes Packets");
2849         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_255_bytes_packets", CTLFLAG_RD,
2850             &priv->pkstats.tx_255_bytes_packets, 0, "TX 255 Bytes Packets");
2851         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_511_bytes_packets", CTLFLAG_RD,
2852             &priv->pkstats.tx_511_bytes_packets, 0, "TX 511 Bytes Packets");
2853         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_1023_bytes_packets", CTLFLAG_RD,
2854             &priv->pkstats.tx_1023_bytes_packets, 0, "TX 1023 Bytes Packets");
2855         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_1518_bytes_packets", CTLFLAG_RD,
2856             &priv->pkstats.tx_1518_bytes_packets, 0, "TX 1518 Bytes Packets");
2857         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_1522_bytes_packets", CTLFLAG_RD,
2858             &priv->pkstats.tx_1522_bytes_packets, 0, "TX 1522 Bytes Packets");
2859         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_1548_bytes_packets", CTLFLAG_RD,
2860             &priv->pkstats.tx_1548_bytes_packets, 0, "TX 1548 Bytes Packets");
2861         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_gt_1548_bytes_packets", CTLFLAG_RD,
2862             &priv->pkstats.tx_gt_1548_bytes_packets, 0,
2863             "TX Greater Then 1548 Bytes Packets");
2864
2865         for (i = 0; i < priv->tx_ring_num; i++) {
2866                 tx_ring = priv->tx_ring[i];
2867                 snprintf(namebuf, sizeof(namebuf), "tx_ring%d", i);
2868                 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
2869                     CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "TX Ring");
2870                 ring_list = SYSCTL_CHILDREN(ring_node);
2871                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "packets",
2872                     CTLFLAG_RD, &tx_ring->packets, 0, "TX packets");
2873                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "bytes",
2874                     CTLFLAG_RD, &tx_ring->bytes, 0, "TX bytes");
2875                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "tso_packets",
2876                     CTLFLAG_RD, &tx_ring->tso_packets, 0, "TSO packets");
2877                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "defrag_attempts",
2878                     CTLFLAG_RD, &tx_ring->defrag_attempts, 0,
2879                     "Oversized chains defragged");
2880         }
2881
2882         for (i = 0; i < priv->rx_ring_num; i++) {
2883                 rx_ring = priv->rx_ring[i];
2884                 snprintf(namebuf, sizeof(namebuf), "rx_ring%d", i);
2885                 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
2886                     CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "RX Ring");
2887                 ring_list = SYSCTL_CHILDREN(ring_node);
2888                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "packets",
2889                     CTLFLAG_RD, &rx_ring->packets, 0, "RX packets");
2890                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "bytes",
2891                     CTLFLAG_RD, &rx_ring->bytes, 0, "RX bytes");
2892                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "error",
2893                     CTLFLAG_RD, &rx_ring->errors, 0, "RX soft errors");
2894         }
2895 }
2896
2897 #ifdef DEBUGNET
2898 static void
2899 mlx4_en_debugnet_init(struct ifnet *dev, int *nrxr, int *ncl, int *clsize)
2900 {
2901         struct mlx4_en_priv *priv;
2902
2903         priv = if_getsoftc(dev);
2904         mutex_lock(&priv->mdev->state_lock);
2905         *nrxr = priv->rx_ring_num;
2906         *ncl = DEBUGNET_MAX_IN_FLIGHT;
2907         *clsize = priv->rx_mb_size;
2908         mutex_unlock(&priv->mdev->state_lock);
2909 }
2910
2911 static void
2912 mlx4_en_debugnet_event(struct ifnet *dev, enum debugnet_ev event)
2913 {
2914 }
2915
2916 static int
2917 mlx4_en_debugnet_transmit(struct ifnet *dev, struct mbuf *m)
2918 {
2919         struct mlx4_en_priv *priv;
2920         int err;
2921
2922         priv = if_getsoftc(dev);
2923         if ((if_getdrvflags(dev) & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
2924             IFF_DRV_RUNNING || !priv->link_state)
2925                 return (ENOENT);
2926
2927         err = mlx4_en_xmit(priv, 0, &m);
2928         if (err != 0 && m != NULL)
2929                 m_freem(m);
2930         return (err);
2931 }
2932
2933 static int
2934 mlx4_en_debugnet_poll(struct ifnet *dev, int count)
2935 {
2936         struct mlx4_en_priv *priv;
2937
2938         priv = if_getsoftc(dev);
2939         if ((if_getdrvflags(dev) & IFF_DRV_RUNNING) == 0 || !priv->link_state)
2940                 return (ENOENT);
2941
2942         mlx4_poll_interrupts(priv->mdev->dev);
2943
2944         return (0);
2945 }
2946 #endif /* DEBUGNET */