sys/ofed/drivers/net/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 #ifdef CONFIG_NET_RX_BUSY_POLL
  38 #include <net/busy_poll.h>
  39 #endif
  40
  41 #include <linux/list.h>
  42 #include <linux/if_ether.h>
  43
  44 #include <linux/mlx4/driver.h>
  45 #include <linux/mlx4/device.h>
  46 #include <linux/mlx4/cmd.h>
  47 #include <linux/mlx4/cq.h>
  48
  49 #include <sys/sockio.h>
  50 #include <sys/sysctl.h>
  51
  52 #include "mlx4_en.h"
  53 #include "en_port.h"
  54
  55 static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv);
  56 static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv);
  57
  58 #ifdef CONFIG_NET_RX_BUSY_POLL
  59 /* must be called with local_bh_disable()d */
  60 static int mlx4_en_low_latency_recv(struct napi_struct *napi)
  61 {
  62         struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
  63         struct net_device *dev = cq->dev;
  64         struct mlx4_en_priv *priv = netdev_priv(dev);
  65         struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring];
  66         int done;
  67
  68         if (!priv->port_up)
  69                 return LL_FLUSH_FAILED;
  70
  71         if (!mlx4_en_cq_lock_poll(cq))
  72                 return LL_FLUSH_BUSY;
  73
  74         done = mlx4_en_process_rx_cq(dev, cq, 4);
  75 #ifdef LL_EXTENDED_STATS
  76         if (done)
  77                 rx_ring->cleaned += done;
  78         else
  79                 rx_ring->misses++;
  80 #endif
  81
  82         mlx4_en_cq_unlock_poll(cq);
  83
  84         return done;
  85 }
  86 #endif  /* CONFIG_NET_RX_BUSY_POLL */
  87
  88 #ifdef CONFIG_RFS_ACCEL
  89
  90 struct mlx4_en_filter {
  91         struct list_head next;
  92         struct work_struct work;
  93
  94         u8     ip_proto;
  95         __be32 src_ip;
  96         __be32 dst_ip;
  97         __be16 src_port;
  98         __be16 dst_port;
  99
 100         int rxq_index;
 101         struct mlx4_en_priv *priv;
 102         u32 flow_id;                    /* RFS infrastructure id */
 103         int id;                         /* mlx4_en driver id */
 104         u64 reg_id;                     /* Flow steering API id */
 105         u8 activated;                   /* Used to prevent expiry before filter
 106                                          * is attached
 107                                          */
 108         struct hlist_node filter_chain;
 109 };
 110
 111 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 112
 113 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 114 {
 115         switch (ip_proto) {
 116         case IPPROTO_UDP:
 117                 return MLX4_NET_TRANS_RULE_ID_UDP;
 118         case IPPROTO_TCP:
 119                 return MLX4_NET_TRANS_RULE_ID_TCP;
 120         default:
 121                 return -EPROTONOSUPPORT;
 122         }
 123 };
 124
 125 static void mlx4_en_filter_work(struct work_struct *work)
 126 {
 127         struct mlx4_en_filter *filter = container_of(work,
 128                                                      struct mlx4_en_filter,
 129                                                      work);
 130         struct mlx4_en_priv *priv = filter->priv;
 131         struct mlx4_spec_list spec_tcp_udp = {
 132                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 133                 {
 134                         .tcp_udp = {
 135                                 .dst_port = filter->dst_port,
 136                                 .dst_port_msk = (__force __be16)-1,
 137                                 .src_port = filter->src_port,
 138                                 .src_port_msk = (__force __be16)-1,
 139                         },
 140                 },
 141         };
 142         struct mlx4_spec_list spec_ip = {
 143                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 144                 {
 145                         .ipv4 = {
 146                                 .dst_ip = filter->dst_ip,
 147                                 .dst_ip_msk = (__force __be32)-1,
 148                                 .src_ip = filter->src_ip,
 149                                 .src_ip_msk = (__force __be32)-1,
 150                         },
 151                 },
 152         };
 153         struct mlx4_spec_list spec_eth = {
 154                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 155         };
 156         struct mlx4_net_trans_rule rule = {
 157                 .list = LIST_HEAD_INIT(rule.list),
 158                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 159                 .exclusive = 1,
 160                 .allow_loopback = 1,
 161                 .promisc_mode = MLX4_FS_REGULAR,
 162                 .port = priv->port,
 163                 .priority = MLX4_DOMAIN_RFS,
 164         };
 165         int rc;
 166         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 167
 168         if (spec_tcp_udp.id < 0) {
 169                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 170                         filter->ip_proto);
 171                 goto ignore;
 172         }
 173         list_add_tail(&spec_eth.list, &rule.list);
 174         list_add_tail(&spec_ip.list, &rule.list);
 175         list_add_tail(&spec_tcp_udp.list, &rule.list);
 176
 177         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 178         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 179         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 180
 181         filter->activated = 0;
 182
 183         if (filter->reg_id) {
 184                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 185                 if (rc && rc != -ENOENT)
 186                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 187         }
 188
 189         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 190         if (rc)
 191                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 192
 193 ignore:
 194         mlx4_en_filter_rfs_expire(priv);
 195
 196         filter->activated = 1;
 197 }
 198
 199 static inline struct hlist_head *
 200 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 201                    __be16 src_port, __be16 dst_port)
 202 {
 203         unsigned long l;
 204         int bucket_idx;
 205
 206         l = (__force unsigned long)src_port |
 207             ((__force unsigned long)dst_port << 2);
 208         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 209
 210         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 211
 212         return &priv->filter_hash[bucket_idx];
 213 }
 214
 215 static struct mlx4_en_filter *
 216 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 217                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 218                      __be16 dst_port, u32 flow_id)
 219 {
 220         struct mlx4_en_filter *filter = NULL;
 221
 222         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 223         if (!filter)
 224                 return NULL;
 225
 226         filter->priv = priv;
 227         filter->rxq_index = rxq_index;
 228         INIT_WORK(&filter->work, mlx4_en_filter_work);
 229
 230         filter->src_ip = src_ip;
 231         filter->dst_ip = dst_ip;
 232         filter->ip_proto = ip_proto;
 233         filter->src_port = src_port;
 234         filter->dst_port = dst_port;
 235
 236         filter->flow_id = flow_id;
 237
 238         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 239
 240         list_add_tail(&filter->next, &priv->filters);
 241         hlist_add_head(&filter->filter_chain,
 242                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 243                                           dst_port));
 244
 245         return filter;
 246 }
 247
 248 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 249 {
 250         struct mlx4_en_priv *priv = filter->priv;
 251         int rc;
 252
 253         list_del(&filter->next);
 254
 255         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 256         if (rc && rc != -ENOENT)
 257                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 258
 259         kfree(filter);
 260 }
 261
 262 static inline struct mlx4_en_filter *
 263 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 264                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 265 {
 266         struct hlist_node *elem;
 267         struct mlx4_en_filter *filter;
 268         struct mlx4_en_filter *ret = NULL;
 269
 270         hlist_for_each_entry(filter, elem,
 271                              filter_hash_bucket(priv, src_ip, dst_ip,
 272                                                 src_port, dst_port),
 273                              filter_chain) {
 274                 if (filter->src_ip == src_ip &&
 275                     filter->dst_ip == dst_ip &&
 276                     filter->ip_proto == ip_proto &&
 277                     filter->src_port == src_port &&
 278                     filter->dst_port == dst_port) {
 279                         ret = filter;
 280                         break;
 281                 }
 282         }
 283
 284         return ret;
 285 }
 286
 287 static int
 288 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 289                    u16 rxq_index, u32 flow_id)
 290 {
 291         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 292         struct mlx4_en_filter *filter;
 293         const struct iphdr *ip;
 294         const __be16 *ports;
 295         u8 ip_proto;
 296         __be32 src_ip;
 297         __be32 dst_ip;
 298         __be16 src_port;
 299         __be16 dst_port;
 300         int nhoff = skb_network_offset(skb);
 301         int ret = 0;
 302
 303         if (skb->protocol != htons(ETH_P_IP))
 304                 return -EPROTONOSUPPORT;
 305
 306         ip = (const struct iphdr *)(skb->data + nhoff);
 307         if (ip_is_fragment(ip))
 308                 return -EPROTONOSUPPORT;
 309
 310         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 311                 return -EPROTONOSUPPORT;
 312         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 313
 314         ip_proto = ip->protocol;
 315         src_ip = ip->saddr;
 316         dst_ip = ip->daddr;
 317         src_port = ports[0];
 318         dst_port = ports[1];
 319
 320         spin_lock_bh(&priv->filters_lock);
 321         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 322                                      src_port, dst_port);
 323         if (filter) {
 324                 if (filter->rxq_index == rxq_index)
 325                         goto out;
 326
 327                 filter->rxq_index = rxq_index;
 328         } else {
 329                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 330                                               src_ip, dst_ip, ip_proto,
 331                                               src_port, dst_port, flow_id);
 332                 if (!filter) {
 333                         ret = -ENOMEM;
 334                         goto err;
 335                 }
 336         }
 337
 338         queue_work(priv->mdev->workqueue, &filter->work);
 339
 340 out:
 341         ret = filter->id;
 342 err:
 343         spin_unlock_bh(&priv->filters_lock);
 344
 345         return ret;
 346 }
 347
 348 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv,
 349                              struct mlx4_en_rx_ring *rx_ring)
 350 {
 351         struct mlx4_en_filter *filter, *tmp;
 352         LIST_HEAD(del_list);
 353
 354         spin_lock_bh(&priv->filters_lock);
 355         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 356                 list_move(&filter->next, &del_list);
 357                 hlist_del(&filter->filter_chain);
 358         }
 359         spin_unlock_bh(&priv->filters_lock);
 360
 361         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 362                 cancel_work_sync(&filter->work);
 363                 mlx4_en_filter_free(filter);
 364         }
 365 }
 366
 367 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 368 {
 369         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 370         LIST_HEAD(del_list);
 371         int i = 0;
 372
 373         spin_lock_bh(&priv->filters_lock);
 374         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 375                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 376                         break;
 377
 378                 if (filter->activated &&
 379                     !work_pending(&filter->work) &&
 380                     rps_may_expire_flow(priv->dev,
 381                                         filter->rxq_index, filter->flow_id,
 382                                         filter->id)) {
 383                         list_move(&filter->next, &del_list);
 384                         hlist_del(&filter->filter_chain);
 385                 } else
 386                         last_filter = filter;
 387
 388                 i++;
 389         }
 390
 391         if (last_filter && (&last_filter->next != priv->filters.next))
 392                 list_move(&priv->filters, &last_filter->next);
 393
 394         spin_unlock_bh(&priv->filters_lock);
 395
 396         list_for_each_entry_safe(filter, tmp, &del_list, next)
 397                 mlx4_en_filter_free(filter);
 398 }
 399 #endif
 400
 401 static void mlx4_en_vlan_rx_add_vid(void *arg, struct net_device *dev, u16 vid)
 402 {
 403         struct mlx4_en_priv *priv = netdev_priv(dev);
 404         struct mlx4_en_dev *mdev = priv->mdev;
 405         int err;
 406         int idx;
 407
 408         if (arg != priv)
 409                 return;
 410
 411         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 412
 413         set_bit(vid, priv->active_vlans);
 414
 415         /* Add VID to port VLAN filter */
 416         mutex_lock(&mdev->state_lock);
 417         if (mdev->device_up && priv->port_up) {
 418                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 419                 if (err)
 420                         en_err(priv, "Failed configuring VLAN filter\n");
 421         }
 422         if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
 423                 en_dbg(HW, priv, "failed adding vlan %d\n", vid);
 424         mutex_unlock(&mdev->state_lock);
 425
 426 }
 427
 428 static void mlx4_en_vlan_rx_kill_vid(void *arg, struct net_device *dev, u16 vid)
 429 {
 430         struct mlx4_en_priv *priv = netdev_priv(dev);
 431         struct mlx4_en_dev *mdev = priv->mdev;
 432         int err;
 433
 434         if (arg != priv)
 435                 return;
 436
 437         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 438
 439         clear_bit(vid, priv->active_vlans);
 440
 441         /* Remove VID from port VLAN filter */
 442         mutex_lock(&mdev->state_lock);
 443         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 444
 445         if (mdev->device_up && priv->port_up) {
 446                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 447                 if (err)
 448                         en_err(priv, "Failed configuring VLAN filter\n");
 449         }
 450         mutex_unlock(&mdev->state_lock);
 451
 452 }
 453
 454 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 455                                 unsigned char *mac, int *qpn, u64 *reg_id)
 456 {
 457         struct mlx4_en_dev *mdev = priv->mdev;
 458         struct mlx4_dev *dev = mdev->dev;
 459         int err;
 460
 461         switch (dev->caps.steering_mode) {
 462         case MLX4_STEERING_MODE_B0: {
 463                 struct mlx4_qp qp;
 464                 u8 gid[16] = {0};
 465
 466                 qp.qpn = *qpn;
 467                 memcpy(&gid[10], mac, ETH_ALEN);
 468                 gid[5] = priv->port;
 469
 470                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 471                 break;
 472         }
 473         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 474                 struct mlx4_spec_list spec_eth = { {NULL} };
 475                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 476
 477                 struct mlx4_net_trans_rule rule = {
 478                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 479                         .exclusive = 0,
 480                         .allow_loopback = 1,
 481                         .promisc_mode = MLX4_FS_REGULAR,
 482                         .priority = MLX4_DOMAIN_NIC,
 483                 };
 484
 485                 rule.port = priv->port;
 486                 rule.qpn = *qpn;
 487                 INIT_LIST_HEAD(&rule.list);
 488
 489                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 490                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 491                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 492                 list_add_tail(&spec_eth.list, &rule.list);
 493
 494                 err = mlx4_flow_attach(dev, &rule, reg_id);
 495                 break;
 496         }
 497         default:
 498                 return -EINVAL;
 499         }
 500         if (err)
 501                 en_warn(priv, "Failed Attaching Unicast\n");
 502
 503         return err;
 504 }
 505
 506 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 507                                      unsigned char *mac, int qpn, u64 reg_id)
 508 {
 509         struct mlx4_en_dev *mdev = priv->mdev;
 510         struct mlx4_dev *dev = mdev->dev;
 511
 512         switch (dev->caps.steering_mode) {
 513         case MLX4_STEERING_MODE_B0: {
 514                 struct mlx4_qp qp;
 515                 u8 gid[16] = {0};
 516
 517                 qp.qpn = qpn;
 518                 memcpy(&gid[10], mac, ETH_ALEN);
 519                 gid[5] = priv->port;
 520
 521                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 522                 break;
 523         }
 524         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 525                 mlx4_flow_detach(dev, reg_id);
 526                 break;
 527         }
 528         default:
 529                 en_err(priv, "Invalid steering mode.\n");
 530         }
 531 }
 532
 533 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 534 {
 535         struct mlx4_en_dev *mdev = priv->mdev;
 536         struct mlx4_dev *dev = mdev->dev;
 537         struct mlx4_mac_entry *entry;
 538         int index = 0;
 539         int err = 0;
 540         u64 reg_id;
 541         int *qpn = &priv->base_qpn;
 542         u64 mac = mlx4_mac_to_u64(IF_LLADDR(priv->dev));
 543
 544         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 545                IF_LLADDR(priv->dev));
 546         index = mlx4_register_mac(dev, priv->port, mac);
 547         if (index < 0) {
 548                 err = index;
 549                 en_err(priv, "Failed adding MAC: %pM\n",
 550                        IF_LLADDR(priv->dev));
 551                 return err;
 552         }
 553
 554         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 555                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 556                 *qpn = base_qpn + index;
 557                 return 0;
 558         }
 559
 560         err = mlx4_qp_reserve_range(dev, 1, 1, qpn, 0);
 561         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 562         if (err) {
 563                 en_err(priv, "Failed to reserve qp for mac registration\n");
 564                 goto qp_err;
 565         }
 566
 567         err = mlx4_en_uc_steer_add(priv, IF_LLADDR(priv->dev), qpn, &reg_id);
 568         if (err)
 569                 goto steer_err;
 570
 571         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
 572         if (!entry) {
 573                 err = -ENOMEM;
 574                 goto alloc_err;
 575         }
 576         memcpy(entry->mac, IF_LLADDR(priv->dev), sizeof(entry->mac));
 577         entry->reg_id = reg_id;
 578
 579         hlist_add_head(&entry->hlist,
 580                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
 581
 582         return 0;
 583
 584 alloc_err:
 585         mlx4_en_uc_steer_release(priv, IF_LLADDR(priv->dev), *qpn, reg_id);
 586
 587 steer_err:
 588         mlx4_qp_release_range(dev, *qpn, 1);
 589
 590 qp_err:
 591         mlx4_unregister_mac(dev, priv->port, mac);
 592         return err;
 593 }
 594
 595 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 596 {
 597         struct mlx4_en_dev *mdev = priv->mdev;
 598         struct mlx4_dev *dev = mdev->dev;
 599         int qpn = priv->base_qpn;
 600         u64 mac;
 601
 602         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 603                 mac = mlx4_mac_to_u64(IF_LLADDR(priv->dev));
 604                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 605                        IF_LLADDR(priv->dev));
 606                 mlx4_unregister_mac(dev, priv->port, mac);
 607         } else {
 608                 struct mlx4_mac_entry *entry;
 609                 struct hlist_node *n, *tmp;
 610                 struct hlist_head *bucket;
 611                 unsigned int i;
 612
 613                 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
 614                         bucket = &priv->mac_hash[i];
 615                         hlist_for_each_entry_safe(entry, n, tmp, bucket, hlist) {
 616                                 mac = mlx4_mac_to_u64(entry->mac);
 617                                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 618                                        entry->mac);
 619                                 mlx4_en_uc_steer_release(priv, entry->mac,
 620                                                          qpn, entry->reg_id);
 621
 622                                 mlx4_unregister_mac(dev, priv->port, mac);
 623                                 hlist_del(&entry->hlist);
 624                                 kfree(entry);
 625                         }
 626                 }
 627
 628                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 629                        priv->port, qpn);
 630                 mlx4_qp_release_range(dev, qpn, 1);
 631                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 632         }
 633 }
 634
 635 static void mlx4_en_clear_list(struct net_device *dev)
 636 {
 637         struct mlx4_en_priv *priv = netdev_priv(dev);
 638         struct mlx4_en_mc_list *tmp, *mc_to_del;
 639
 640         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 641                 list_del(&mc_to_del->list);
 642                 kfree(mc_to_del);
 643         }
 644 }
 645
 646 static void mlx4_en_cache_mclist(struct net_device *dev)
 647 {
 648         struct ifmultiaddr *ifma;
 649         struct mlx4_en_mc_list *tmp;
 650         struct mlx4_en_priv *priv = netdev_priv(dev);
 651
 652         if_maddr_rlock(dev);
 653         TAILQ_FOREACH(ifma, &dev->if_multiaddrs, ifma_link) {
 654                 if (ifma->ifma_addr->sa_family != AF_LINK)
 655                         continue;
 656                 if (((struct sockaddr_dl *)ifma->ifma_addr)->sdl_alen !=
 657                                 ETHER_ADDR_LEN)
 658                         continue;
 659                 /* Make sure the list didn't grow. */
 660                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 661                 if (tmp == NULL) {
 662                         en_err(priv, "Failed to allocate multicast list\n");
 663                         break;
 664                 }
 665                 memcpy(tmp->addr,
 666                         LLADDR((struct sockaddr_dl *)ifma->ifma_addr), ETH_ALEN);
 667                 list_add_tail(&tmp->list, &priv->mc_list);
 668         }
 669         if_maddr_runlock(dev);
 670 }
 671
 672 static void update_mclist_flags(struct mlx4_en_priv *priv,
 673                                 struct list_head *dst,
 674                                 struct list_head *src)
 675 {
 676         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 677         bool found;
 678
 679         /* Find all the entries that should be removed from dst,
 680          * These are the entries that are not found in src
 681          */
 682         list_for_each_entry(dst_tmp, dst, list) {
 683                 found = false;
 684                 list_for_each_entry(src_tmp, src, list) {
 685                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 686                                 found = true;
 687                                 break;
 688                         }
 689                 }
 690                 if (!found)
 691                         dst_tmp->action = MCLIST_REM;
 692         }
 693
 694         /* Add entries that exist in src but not in dst
 695          * mark them as need to add
 696          */
 697         list_for_each_entry(src_tmp, src, list) {
 698                 found = false;
 699                 list_for_each_entry(dst_tmp, dst, list) {
 700                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 701                                 dst_tmp->action = MCLIST_NONE;
 702                                 found = true;
 703                                 break;
 704                         }
 705                 }
 706                 if (!found) {
 707                         new_mc = kmalloc(sizeof(struct mlx4_en_mc_list),
 708                                          GFP_KERNEL);
 709                         if (!new_mc) {
 710                                 en_err(priv, "Failed to allocate current multicast list\n");
 711                                 return;
 712                         }
 713                         memcpy(new_mc, src_tmp,
 714                                sizeof(struct mlx4_en_mc_list));
 715                         new_mc->action = MCLIST_ADD;
 716                         list_add_tail(&new_mc->list, dst);
 717                 }
 718         }
 719 }
 720
 721 static void mlx4_en_set_rx_mode(struct net_device *dev)
 722 {
 723         struct mlx4_en_priv *priv = netdev_priv(dev);
 724
 725         if (!priv->port_up)
 726                 return;
 727
 728         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 729 }
 730
 731 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 732                                      struct mlx4_en_dev *mdev)
 733 {
 734         int err = 0;
 735         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 736                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 737
 738                 /* Enable promiscouos mode */
 739                 switch (mdev->dev->caps.steering_mode) {
 740                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 741                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 742                                                           priv->port,
 743                                                           priv->base_qpn,
 744                                                           MLX4_FS_ALL_DEFAULT);
 745                         if (err)
 746                                 en_err(priv, "Failed enabling promiscuous mode\n");
 747                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 748                         break;
 749
 750                 case MLX4_STEERING_MODE_B0:
 751                         err = mlx4_unicast_promisc_add(mdev->dev,
 752                                                        priv->base_qpn,
 753                                                        priv->port);
 754                         if (err)
 755                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 756
 757                         /* Add the default qp number as multicast
 758                          * promisc
 759                          */
 760                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 761                                 err = mlx4_multicast_promisc_add(mdev->dev,
 762                                                                  priv->base_qpn,
 763                                                                  priv->port);
 764                                 if (err)
 765                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 766                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 767                         }
 768                         break;
 769
 770                 case MLX4_STEERING_MODE_A0:
 771                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 772                                                      priv->port,
 773                                                      priv->base_qpn,
 774                                                      1);
 775                         if (err)
 776                                 en_err(priv, "Failed enabling promiscuous mode\n");
 777                         break;
 778                 }
 779
 780                 /* Disable port multicast filter (unconditionally) */
 781                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 782                                           0, MLX4_MCAST_DISABLE);
 783                 if (err)
 784                         en_err(priv, "Failed disabling multicast filter\n");
 785         }
 786 }
 787
 788 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 789                                        struct mlx4_en_dev *mdev)
 790 {
 791         int err = 0;
 792
 793         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 794
 795         /* Disable promiscouos mode */
 796         switch (mdev->dev->caps.steering_mode) {
 797         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 798                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 799                                                      priv->port,
 800                                                      MLX4_FS_ALL_DEFAULT);
 801                 if (err)
 802                         en_err(priv, "Failed disabling promiscuous mode\n");
 803                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 804                 break;
 805
 806         case MLX4_STEERING_MODE_B0:
 807                 err = mlx4_unicast_promisc_remove(mdev->dev,
 808                                                   priv->base_qpn,
 809                                                   priv->port);
 810                 if (err)
 811                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 812                 /* Disable Multicast promisc */
 813                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 814                         err = mlx4_multicast_promisc_remove(mdev->dev,
 815                                                             priv->base_qpn,
 816                                                             priv->port);
 817                         if (err)
 818                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 819                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 820                 }
 821                 break;
 822
 823         case MLX4_STEERING_MODE_A0:
 824                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 825                                              priv->port,
 826                                              priv->base_qpn, 0);
 827                 if (err)
 828                         en_err(priv, "Failed disabling promiscuous mode\n");
 829                 break;
 830         }
 831 }
 832
 833 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 834                                  struct net_device *dev,
 835                                  struct mlx4_en_dev *mdev)
 836 {
 837         struct mlx4_en_mc_list *mclist, *tmp;
 838         u8 mc_list[16] = {0};
 839         int err = 0;
 840         u64 mcast_addr = 0;
 841
 842
 843         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 844         if (dev->if_flags & IFF_ALLMULTI) {
 845                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 846                                           0, MLX4_MCAST_DISABLE);
 847                 if (err)
 848                         en_err(priv, "Failed disabling multicast filter\n");
 849
 850                 /* Add the default qp number as multicast promisc */
 851                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 852                         switch (mdev->dev->caps.steering_mode) {
 853                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 854                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
 855                                                                   priv->port,
 856                                                                   priv->base_qpn,
 857                                                                   MLX4_FS_MC_DEFAULT);
 858                                 break;
 859
 860                         case MLX4_STEERING_MODE_B0:
 861                                 err = mlx4_multicast_promisc_add(mdev->dev,
 862                                                                  priv->base_qpn,
 863                                                                  priv->port);
 864                                 break;
 865
 866                         case MLX4_STEERING_MODE_A0:
 867                                 break;
 868                         }
 869                         if (err)
 870                                 en_err(priv, "Failed entering multicast promisc mode\n");
 871                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 872                 }
 873         } else {
 874                 /* Disable Multicast promisc */
 875                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 876                         switch (mdev->dev->caps.steering_mode) {
 877                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 878                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 879                                                                      priv->port,
 880                                                                      MLX4_FS_MC_DEFAULT);
 881                                 break;
 882
 883                         case MLX4_STEERING_MODE_B0:
 884                                 err = mlx4_multicast_promisc_remove(mdev->dev,
 885                                                                     priv->base_qpn,
 886                                                                     priv->port);
 887                                 break;
 888
 889                         case MLX4_STEERING_MODE_A0:
 890                                 break;
 891                         }
 892                         if (err)
 893                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 894                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 895                 }
 896
 897                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 898                                           0, MLX4_MCAST_DISABLE);
 899                 if (err)
 900                         en_err(priv, "Failed disabling multicast filter\n");
 901
 902                 /* Flush mcast filter and init it with broadcast address */
 903                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
 904                                     1, MLX4_MCAST_CONFIG);
 905
 906                 /* Update multicast list - we cache all addresses so they won't
 907                  * change while HW is updated holding the command semaphor */
 908                 mlx4_en_cache_mclist(dev);
 909                 list_for_each_entry(mclist, &priv->mc_list, list) {
 910                         mcast_addr = mlx4_mac_to_u64(mclist->addr);
 911                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
 912                                         mcast_addr, 0, MLX4_MCAST_CONFIG);
 913                 }
 914                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 915                                           0, MLX4_MCAST_ENABLE);
 916                 if (err)
 917                         en_err(priv, "Failed enabling multicast filter\n");
 918
 919                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
 920                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
 921                         if (mclist->action == MCLIST_REM) {
 922                                 /* detach this address and delete from list */
 923                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
 924                                 mc_list[5] = priv->port;
 925                                 err = mlx4_multicast_detach(mdev->dev,
 926                                                             &priv->rss_map.indir_qp,
 927                                                             mc_list,
 928                                                             MLX4_PROT_ETH,
 929                                                             mclist->reg_id);
 930                                 if (err)
 931                                         en_err(priv, "Fail to detach multicast address\n");
 932
 933                                 /* remove from list */
 934                                 list_del(&mclist->list);
 935                                 kfree(mclist);
 936                         } else if (mclist->action == MCLIST_ADD) {
 937                                 /* attach the address */
 938                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
 939                                 /* needed for B0 steering support */
 940                                 mc_list[5] = priv->port;
 941                                 err = mlx4_multicast_attach(mdev->dev,
 942                                                             &priv->rss_map.indir_qp,
 943                                                             mc_list,
 944                                                             priv->port, 0,
 945                                                             MLX4_PROT_ETH,
 946                                                             &mclist->reg_id);
 947                                 if (err)
 948                                         en_err(priv, "Fail to attach multicast address\n");
 949
 950                         }
 951                 }
 952         }
 953 }
 954
 955 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
 956 {
 957         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
 958                                                  rx_mode_task);
 959         struct mlx4_en_dev *mdev = priv->mdev;
 960         struct net_device *dev = priv->dev;
 961
 962
 963         mutex_lock(&mdev->state_lock);
 964         if (!mdev->device_up) {
 965                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
 966                 goto out;
 967         }
 968         if (!priv->port_up) {
 969                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
 970                 goto out;
 971         }
 972         if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
 973                 if (priv->port_state.link_state) {
 974                         priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
 975                         /* update netif baudrate */
 976                         priv->dev->if_baudrate =
 977                             IF_Mbps(priv->port_state.link_speed);
 978                         /* Important note: the following call for if_link_state_change
 979                          * is needed for interface up scenario (start port, link state
 980                          * change) */
 981                         if_link_state_change(priv->dev, LINK_STATE_UP);
 982                         en_dbg(HW, priv, "Link Up\n");
 983                 }
 984         }
 985
 986         /* Promsicuous mode: disable all filters */
 987         if ((dev->if_flags & IFF_PROMISC) ||
 988             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
 989                 mlx4_en_set_promisc_mode(priv, mdev);
 990                 goto out;
 991         }
 992
 993         /* Not in promiscuous mode */
 994         if (priv->flags & MLX4_EN_FLAG_PROMISC)
 995                 mlx4_en_clear_promisc_mode(priv, mdev);
 996
 997         mlx4_en_do_multicast(priv, dev, mdev);
 998 out:
 999         mutex_unlock(&mdev->state_lock);
1000 }
1001
1002 #ifdef CONFIG_NET_POLL_CONTROLLER
1003 static void mlx4_en_netpoll(struct net_device *dev)
1004 {
1005         struct mlx4_en_priv *priv = netdev_priv(dev);
1006         struct mlx4_en_cq *cq;
1007         unsigned long flags;
1008         int i;
1009
1010         for (i = 0; i < priv->rx_ring_num; i++) {
1011                 cq = priv->rx_cq[i];
1012                 spin_lock_irqsave(&cq->lock, flags);
1013                 napi_synchronize(&cq->napi);
1014                 mlx4_en_process_rx_cq(dev, cq, 0);
1015                 spin_unlock_irqrestore(&cq->lock, flags);
1016         }
1017 }
1018 #endif
1019
1020 static void mlx4_en_watchdog_timeout(void *arg)
1021 {
1022         struct mlx4_en_priv *priv = arg;
1023         struct mlx4_en_dev *mdev = priv->mdev;
1024
1025         en_dbg(DRV, priv, "Scheduling watchdog\n");
1026         queue_work(mdev->workqueue, &priv->watchdog_task);
1027         if (priv->port_up)
1028                 callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
1029                                 mlx4_en_watchdog_timeout, priv);
1030 }
1031
1032
1033
1034 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1035 {
1036         struct mlx4_en_cq *cq;
1037         int i;
1038
1039         /* If we haven't received a specific coalescing setting
1040          * (module param), we set the moderation parameters as follows:
1041          * - moder_cnt is set to the number of mtu sized packets to
1042          *   satisfy our coelsing target.
1043          * - moder_time is set to a fixed value.
1044          */
1045         priv->rx_frames = MLX4_EN_RX_COAL_TARGET / priv->dev->if_mtu + 1;
1046         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1047         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1048         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1049         en_dbg(INTR, priv, "Default coalesing params for mtu: %u - "
1050                "rx_frames:%d rx_usecs:%d\n",
1051                (unsigned)priv->dev->if_mtu, priv->rx_frames, priv->rx_usecs);
1052
1053         /* Setup cq moderation params */
1054         for (i = 0; i < priv->rx_ring_num; i++) {
1055                 cq = priv->rx_cq[i];
1056                 cq->moder_cnt = priv->rx_frames;
1057                 cq->moder_time = priv->rx_usecs;
1058                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1059                 priv->last_moder_packets[i] = 0;
1060                 priv->last_moder_bytes[i] = 0;
1061         }
1062
1063         for (i = 0; i < priv->tx_ring_num; i++) {
1064                 cq = priv->tx_cq[i];
1065                 cq->moder_cnt = priv->tx_frames;
1066                 cq->moder_time = priv->tx_usecs;
1067         }
1068
1069         /* Reset auto-moderation params */
1070         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1071         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1072         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1073         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1074         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1075         priv->adaptive_rx_coal = 1;
1076         priv->last_moder_jiffies = 0;
1077         priv->last_moder_tx_packets = 0;
1078 }
1079
1080 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1081 {
1082         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1083         struct mlx4_en_cq *cq;
1084         unsigned long packets;
1085         unsigned long rate;
1086         unsigned long avg_pkt_size;
1087         unsigned long rx_packets;
1088         unsigned long rx_bytes;
1089         unsigned long rx_pkt_diff;
1090         int moder_time;
1091         int ring, err;
1092
1093         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1094                 return;
1095
1096         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1097                 spin_lock(&priv->stats_lock);
1098                 rx_packets = priv->rx_ring[ring]->packets;
1099                 rx_bytes = priv->rx_ring[ring]->bytes;
1100                 spin_unlock(&priv->stats_lock);
1101
1102                 rx_pkt_diff = ((unsigned long) (rx_packets -
1103                                 priv->last_moder_packets[ring]));
1104                 packets = rx_pkt_diff;
1105                 rate = packets * HZ / period;
1106                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1107                                 priv->last_moder_bytes[ring])) / packets : 0;
1108
1109                 /* Apply auto-moderation only when packet rate
1110                  * exceeds a rate that it matters */
1111                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1112                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1113                         if (rate < priv->pkt_rate_low)
1114                                 moder_time = priv->rx_usecs_low;
1115                         else if (rate > priv->pkt_rate_high)
1116                                 moder_time = priv->rx_usecs_high;
1117                         else
1118                                 moder_time = (rate - priv->pkt_rate_low) *
1119                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1120                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
1121                                         priv->rx_usecs_low;
1122                 } else {
1123                         moder_time = priv->rx_usecs_low;
1124                 }
1125
1126                 if (moder_time != priv->last_moder_time[ring]) {
1127                         priv->last_moder_time[ring] = moder_time;
1128                         cq = priv->rx_cq[ring];
1129                         cq->moder_time = moder_time;
1130                         err = mlx4_en_set_cq_moder(priv, cq);
1131                         if (err)
1132                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1133                                        ring);
1134                 }
1135                 priv->last_moder_packets[ring] = rx_packets;
1136                 priv->last_moder_bytes[ring] = rx_bytes;
1137         }
1138
1139         priv->last_moder_jiffies = jiffies;
1140 }
1141
1142 static void mlx4_en_do_get_stats(struct work_struct *work)
1143 {
1144         struct delayed_work *delay = to_delayed_work(work);
1145         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1146                                                  stats_task);
1147         struct mlx4_en_dev *mdev = priv->mdev;
1148         int err;
1149
1150         mutex_lock(&mdev->state_lock);
1151         if (mdev->device_up) {
1152                 if (priv->port_up) {
1153                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1154                         if (err)
1155                                 en_dbg(HW, priv, "Could not update stats\n");
1156
1157                         mlx4_en_auto_moderation(priv);
1158                 }
1159
1160                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1161         }
1162         mutex_unlock(&mdev->state_lock);
1163 }
1164
1165 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1166  * periodically
1167  */
1168 static void mlx4_en_service_task(struct work_struct *work)
1169 {
1170         struct delayed_work *delay = to_delayed_work(work);
1171         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1172                                                  service_task);
1173         struct mlx4_en_dev *mdev = priv->mdev;
1174
1175         mutex_lock(&mdev->state_lock);
1176         if (mdev->device_up) {
1177                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1178                                    SERVICE_TASK_DELAY);
1179         }
1180         mutex_unlock(&mdev->state_lock);
1181 }
1182
1183 static void mlx4_en_linkstate(struct work_struct *work)
1184 {
1185         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1186                                                  linkstate_task);
1187         struct mlx4_en_dev *mdev = priv->mdev;
1188         int linkstate = priv->link_state;
1189
1190         mutex_lock(&mdev->state_lock);
1191         /* If observable port state changed set carrier state and
1192          * report to system log */
1193         if (priv->last_link_state != linkstate) {
1194                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1195                         en_info(priv, "Link Down\n");
1196                         if_link_state_change(priv->dev, LINK_STATE_DOWN);
1197                         /* update netif baudrate */
1198                         priv->dev->if_baudrate = 0;
1199
1200                 /* make sure the port is up before notifying the OS.
1201                  * This is tricky since we get here on INIT_PORT and
1202                  * in such case we can't tell the OS the port is up.
1203                  * To solve this there is a call to if_link_state_change
1204                  * in set_rx_mode.
1205                  * */
1206                 } else if (priv->port_up && (linkstate == MLX4_DEV_EVENT_PORT_UP)){
1207                         if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
1208                                 en_info(priv, "Query port failed\n");
1209                         priv->dev->if_baudrate =
1210                             IF_Mbps(priv->port_state.link_speed);
1211                         en_info(priv, "Link Up\n");
1212                         if_link_state_change(priv->dev, LINK_STATE_UP);
1213                 }
1214         }
1215         priv->last_link_state = linkstate;
1216         mutex_unlock(&mdev->state_lock);
1217 }
1218
1219
1220 int mlx4_en_start_port(struct net_device *dev)
1221 {
1222         struct mlx4_en_priv *priv = netdev_priv(dev);
1223         struct mlx4_en_dev *mdev = priv->mdev;
1224         struct mlx4_en_cq *cq;
1225         struct mlx4_en_tx_ring *tx_ring;
1226         int rx_index = 0;
1227         int tx_index = 0;
1228         int err = 0;
1229         int i;
1230         int j;
1231         u8 mc_list[16] = {0};
1232
1233
1234         if (priv->port_up) {
1235                 en_dbg(DRV, priv, "start port called while port already up\n");
1236                 return 0;
1237         }
1238
1239         INIT_LIST_HEAD(&priv->mc_list);
1240         INIT_LIST_HEAD(&priv->curr_list);
1241         INIT_LIST_HEAD(&priv->ethtool_list);
1242
1243         /* Calculate Rx buf size */
1244         dev->if_mtu = min(dev->if_mtu, priv->max_mtu);
1245         mlx4_en_calc_rx_buf(dev);
1246         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_mb_size);
1247
1248         /* Configure rx cq's and rings */
1249         err = mlx4_en_activate_rx_rings(priv);
1250         if (err) {
1251                 en_err(priv, "Failed to activate RX rings\n");
1252                 return err;
1253         }
1254         for (i = 0; i < priv->rx_ring_num; i++) {
1255                 cq = priv->rx_cq[i];
1256
1257                 mlx4_en_cq_init_lock(cq);
1258                 err = mlx4_en_activate_cq(priv, cq, i);
1259                 if (err) {
1260                         en_err(priv, "Failed activating Rx CQ\n");
1261                         goto cq_err;
1262                 }
1263                 for (j = 0; j < cq->size; j++)
1264                         cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1265                 err = mlx4_en_set_cq_moder(priv, cq);
1266                 if (err) {
1267                         en_err(priv, "Failed setting cq moderation parameters");
1268                         mlx4_en_deactivate_cq(priv, cq);
1269                         goto cq_err;
1270                 }
1271                 mlx4_en_arm_cq(priv, cq);
1272                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1273                 ++rx_index;
1274         }
1275
1276         /* Set qp number */
1277         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1278         err = mlx4_en_get_qp(priv);
1279         if (err) {
1280                 en_err(priv, "Failed getting eth qp\n");
1281                 goto cq_err;
1282         }
1283         mdev->mac_removed[priv->port] = 0;
1284
1285         /* gets default allocated counter index from func cap */
1286         /* or sink counter index if no resources */
1287         priv->counter_index = mdev->dev->caps.def_counter_index[priv->port - 1];
1288
1289         en_dbg(DRV, priv, "%s: default counter index %d for port %d\n",
1290                __func__, priv->counter_index, priv->port);
1291
1292         err = mlx4_en_config_rss_steer(priv);
1293         if (err) {
1294                 en_err(priv, "Failed configuring rss steering\n");
1295                 goto mac_err;
1296         }
1297
1298         err = mlx4_en_create_drop_qp(priv);
1299         if (err)
1300                 goto rss_err;
1301
1302         /* Configure tx cq's and rings */
1303         for (i = 0; i < priv->tx_ring_num; i++) {
1304                 /* Configure cq */
1305                 cq = priv->tx_cq[i];
1306                 err = mlx4_en_activate_cq(priv, cq, i);
1307                 if (err) {
1308                         en_err(priv, "Failed activating Tx CQ\n");
1309                         goto tx_err;
1310                 }
1311                 err = mlx4_en_set_cq_moder(priv, cq);
1312                 if (err) {
1313                         en_err(priv, "Failed setting cq moderation parameters");
1314                         mlx4_en_deactivate_cq(priv, cq);
1315                         goto tx_err;
1316                 }
1317                 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1318                 cq->buf->wqe_index = cpu_to_be16(0xffff);
1319
1320                 /* Configure ring */
1321                 tx_ring = priv->tx_ring[i];
1322
1323                 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1324                                                i / priv->num_tx_rings_p_up);
1325                 if (err) {
1326                         en_err(priv, "Failed activating Tx ring %d\n", i);
1327                         mlx4_en_deactivate_cq(priv, cq);
1328                         goto tx_err;
1329                 }
1330
1331                 /* Arm CQ for TX completions */
1332                 mlx4_en_arm_cq(priv, cq);
1333
1334                 /* Set initial ownership of all Tx TXBBs to SW (1) */
1335                 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1336                         *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1337                 ++tx_index;
1338         }
1339
1340         /* Configure port */
1341         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1342                                     priv->rx_mb_size,
1343                                     priv->prof->tx_pause,
1344                                     priv->prof->tx_ppp,
1345                                     priv->prof->rx_pause,
1346                                     priv->prof->rx_ppp);
1347         if (err) {
1348                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1349                        priv->port, err);
1350                 goto tx_err;
1351         }
1352         /* Set default qp number */
1353         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1354         if (err) {
1355                 en_err(priv, "Failed setting default qp numbers\n");
1356                 goto tx_err;
1357         }
1358
1359         /* Init port */
1360         en_dbg(HW, priv, "Initializing port\n");
1361         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1362         if (err) {
1363                 en_err(priv, "Failed Initializing port\n");
1364                 goto tx_err;
1365         }
1366
1367         /* Attach rx QP to bradcast address */
1368         memset(&mc_list[10], 0xff, ETH_ALEN);
1369         mc_list[5] = priv->port; /* needed for B0 steering support */
1370         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1371                                   priv->port, 0, MLX4_PROT_ETH,
1372                                   &priv->broadcast_id))
1373                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1374
1375         /* Must redo promiscuous mode setup. */
1376         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1377
1378         /* Schedule multicast task to populate multicast list */
1379         queue_work(mdev->workqueue, &priv->rx_mode_task);
1380
1381         mlx4_set_stats_bitmap(mdev->dev, priv->stats_bitmap);
1382
1383         priv->port_up = true;
1384
1385         /* Enable the queues. */
1386         dev->if_drv_flags &= ~IFF_DRV_OACTIVE;
1387         dev->if_drv_flags |= IFF_DRV_RUNNING;
1388 #ifdef CONFIG_DEBUG_FS
1389         mlx4_en_create_debug_files(priv);
1390 #endif
1391         callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
1392                     mlx4_en_watchdog_timeout, priv);
1393
1394
1395         return 0;
1396
1397 tx_err:
1398         while (tx_index--) {
1399                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1400                 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1401         }
1402         mlx4_en_destroy_drop_qp(priv);
1403 rss_err:
1404         mlx4_en_release_rss_steer(priv);
1405 mac_err:
1406         mlx4_en_put_qp(priv);
1407 cq_err:
1408         while (rx_index--)
1409                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1410         for (i = 0; i < priv->rx_ring_num; i++)
1411                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1412
1413         return err; /* need to close devices */
1414 }
1415
1416
1417 void mlx4_en_stop_port(struct net_device *dev)
1418 {
1419         struct mlx4_en_priv *priv = netdev_priv(dev);
1420         struct mlx4_en_dev *mdev = priv->mdev;
1421         struct mlx4_en_mc_list *mclist, *tmp;
1422         int i;
1423         u8 mc_list[16] = {0};
1424
1425         if (!priv->port_up) {
1426                 en_dbg(DRV, priv, "stop port called while port already down\n");
1427                 return;
1428         }
1429
1430 #ifdef CONFIG_DEBUG_FS
1431         mlx4_en_delete_debug_files(priv);
1432 #endif
1433
1434         /* close port*/
1435         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1436
1437         /* Set port as not active */
1438         priv->port_up = false;
1439         if (priv->counter_index != 0xff) {
1440                 mlx4_counter_free(mdev->dev, priv->port, priv->counter_index);
1441                 priv->counter_index = 0xff;
1442         }
1443
1444         /* Promsicuous mode */
1445         if (mdev->dev->caps.steering_mode ==
1446             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1447                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1448                                  MLX4_EN_FLAG_MC_PROMISC);
1449                 mlx4_flow_steer_promisc_remove(mdev->dev,
1450                                                priv->port,
1451                                                MLX4_FS_ALL_DEFAULT);
1452                 mlx4_flow_steer_promisc_remove(mdev->dev,
1453                                                priv->port,
1454                                                MLX4_FS_MC_DEFAULT);
1455         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1456                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1457
1458                 /* Disable promiscouos mode */
1459                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1460                                             priv->port);
1461
1462                 /* Disable Multicast promisc */
1463                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1464                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1465                                                       priv->port);
1466                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1467                 }
1468         }
1469
1470         /* Detach All multicasts */
1471         memset(&mc_list[10], 0xff, ETH_ALEN);
1472         mc_list[5] = priv->port; /* needed for B0 steering support */
1473         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1474                               MLX4_PROT_ETH, priv->broadcast_id);
1475         list_for_each_entry(mclist, &priv->curr_list, list) {
1476                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1477                 mc_list[5] = priv->port;
1478                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1479                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1480         }
1481         mlx4_en_clear_list(dev);
1482         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1483                 list_del(&mclist->list);
1484                 kfree(mclist);
1485         }
1486
1487         /* Flush multicast filter */
1488         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1489         mlx4_en_destroy_drop_qp(priv);
1490
1491         /* Free TX Rings */
1492         for (i = 0; i < priv->tx_ring_num; i++) {
1493                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1494                 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1495         }
1496         msleep(10);
1497
1498         for (i = 0; i < priv->tx_ring_num; i++)
1499                 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1500
1501         /* Free RSS qps */
1502         mlx4_en_release_rss_steer(priv);
1503
1504         /* Unregister Mac address for the port */
1505         mlx4_en_put_qp(priv);
1506         mdev->mac_removed[priv->port] = 1;
1507
1508         /* Free RX Rings */
1509         for (i = 0; i < priv->rx_ring_num; i++) {
1510                 struct mlx4_en_cq *cq = priv->rx_cq[i];
1511                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1512                 mlx4_en_deactivate_cq(priv, cq);
1513         }
1514
1515         callout_stop(&priv->watchdog_timer);
1516
1517         dev->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1518 }
1519
1520 static void mlx4_en_restart(struct work_struct *work)
1521 {
1522         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1523                                                  watchdog_task);
1524         struct mlx4_en_dev *mdev = priv->mdev;
1525         struct net_device *dev = priv->dev;
1526         struct mlx4_en_tx_ring *ring;
1527         int i;
1528
1529
1530         if (priv->blocked == 0 || priv->port_up == 0)
1531                 return;
1532         for (i = 0; i < priv->tx_ring_num; i++) {
1533                 ring = priv->tx_ring[i];
1534                 if (ring->blocked &&
1535                                 ring->watchdog_time + MLX4_EN_WATCHDOG_TIMEOUT < ticks)
1536                         goto reset;
1537         }
1538         return;
1539
1540 reset:
1541         priv->port_stats.tx_timeout++;
1542         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1543
1544         mutex_lock(&mdev->state_lock);
1545         if (priv->port_up) {
1546                 mlx4_en_stop_port(dev);
1547                 //for (i = 0; i < priv->tx_ring_num; i++)
1548                 //        netdev_tx_reset_queue(priv->tx_ring[i]->tx_queue);
1549                 if (mlx4_en_start_port(dev))
1550                         en_err(priv, "Failed restarting port %d\n", priv->port);
1551         }
1552         mutex_unlock(&mdev->state_lock);
1553 }
1554
1555 static void mlx4_en_clear_stats(struct net_device *dev)
1556 {
1557         struct mlx4_en_priv *priv = netdev_priv(dev);
1558         struct mlx4_en_dev *mdev = priv->mdev;
1559         int i;
1560
1561         if (!mlx4_is_slave(mdev->dev))
1562                 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1563                         en_dbg(HW, priv, "Failed dumping statistics\n");
1564
1565         memset(&priv->pstats, 0, sizeof(priv->pstats));
1566         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1567         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1568         memset(&priv->vport_stats, 0, sizeof(priv->vport_stats));
1569
1570         for (i = 0; i < priv->tx_ring_num; i++) {
1571                 priv->tx_ring[i]->bytes = 0;
1572                 priv->tx_ring[i]->packets = 0;
1573                 priv->tx_ring[i]->tx_csum = 0;
1574                 priv->tx_ring[i]->oversized_packets = 0;
1575         }
1576         for (i = 0; i < priv->rx_ring_num; i++) {
1577                 priv->rx_ring[i]->bytes = 0;
1578                 priv->rx_ring[i]->packets = 0;
1579                 priv->rx_ring[i]->csum_ok = 0;
1580                 priv->rx_ring[i]->csum_none = 0;
1581         }
1582 }
1583
1584 static void mlx4_en_open(void* arg)
1585 {
1586
1587         struct mlx4_en_priv *priv;
1588         struct mlx4_en_dev *mdev;
1589         struct net_device *dev;
1590         int err = 0;
1591
1592         priv = arg;
1593         mdev = priv->mdev;
1594         dev = priv->dev;
1595
1596
1597         mutex_lock(&mdev->state_lock);
1598
1599         if (!mdev->device_up) {
1600                 en_err(priv, "Cannot open - device down/disabled\n");
1601                 goto out;
1602         }
1603
1604         /* Reset HW statistics and SW counters */
1605         mlx4_en_clear_stats(dev);
1606
1607         err = mlx4_en_start_port(dev);
1608         if (err)
1609                 en_err(priv, "Failed starting port:%d\n", priv->port);
1610
1611 out:
1612         mutex_unlock(&mdev->state_lock);
1613         return;
1614 }
1615
1616 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1617 {
1618         int i;
1619
1620 #ifdef CONFIG_RFS_ACCEL
1621         if (priv->dev->rx_cpu_rmap) {
1622                 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1623                 priv->dev->rx_cpu_rmap = NULL;
1624         }
1625 #endif
1626
1627         for (i = 0; i < priv->tx_ring_num; i++) {
1628                 if (priv->tx_ring && priv->tx_ring[i])
1629                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1630                 if (priv->tx_cq && priv->tx_cq[i])
1631                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1632         }
1633
1634         for (i = 0; i < priv->rx_ring_num; i++) {
1635                 if (priv->rx_ring[i])
1636                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1637                                 priv->prof->rx_ring_size, priv->stride);
1638                 if (priv->rx_cq[i])
1639                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1640         }
1641
1642         if (priv->stat_sysctl != NULL)
1643                 sysctl_ctx_free(&priv->stat_ctx);
1644 }
1645
1646 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1647 {
1648         struct mlx4_en_port_profile *prof = priv->prof;
1649         int i;
1650         int node = 0;
1651
1652         /* Create rx Rings */
1653         for (i = 0; i < priv->rx_ring_num; i++) {
1654                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
1655                                       prof->rx_ring_size, i, RX, node))
1656                         goto err;
1657
1658                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
1659                                            prof->rx_ring_size, node))
1660                         goto err;
1661         }
1662
1663         /* Create tx Rings */
1664         for (i = 0; i < priv->tx_ring_num; i++) {
1665                 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1666                                       prof->tx_ring_size, i, TX, node))
1667                         goto err;
1668
1669                 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
1670                                            prof->tx_ring_size, TXBB_SIZE, node, i))
1671                         goto err;
1672         }
1673
1674 #ifdef CONFIG_RFS_ACCEL
1675         priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->rx_ring_num);
1676         if (!priv->dev->rx_cpu_rmap)
1677                 goto err;
1678 #endif
1679         /* Re-create stat sysctls in case the number of rings changed. */
1680         mlx4_en_sysctl_stat(priv);
1681         return 0;
1682
1683 err:
1684         en_err(priv, "Failed to allocate NIC resources\n");
1685         for (i = 0; i < priv->rx_ring_num; i++) {
1686                 if (priv->rx_ring[i])
1687                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1688                                                 prof->rx_ring_size,
1689                                                 priv->stride);
1690                 if (priv->rx_cq[i])
1691                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1692         }
1693         for (i = 0; i < priv->tx_ring_num; i++) {
1694                 if (priv->tx_ring[i])
1695                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1696                 if (priv->tx_cq[i])
1697                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1698         }
1699         priv->port_up = false;
1700         return -ENOMEM;
1701 }
1702
1703 struct en_port_attribute {
1704         struct attribute attr;
1705         ssize_t (*show)(struct en_port *, struct en_port_attribute *, char *buf);
1706         ssize_t (*store)(struct en_port *, struct en_port_attribute *, char *buf, size_t count);
1707 };
1708
1709 #define PORT_ATTR_RO(_name) \
1710 struct en_port_attribute en_port_attr_##_name = __ATTR_RO(_name)
1711
1712 #define EN_PORT_ATTR(_name, _mode, _show, _store) \
1713 struct en_port_attribute en_port_attr_##_name = __ATTR(_name, _mode, _show, _store)
1714
1715 void mlx4_en_destroy_netdev(struct net_device *dev)
1716 {
1717         struct mlx4_en_priv *priv = netdev_priv(dev);
1718         struct mlx4_en_dev *mdev = priv->mdev;
1719
1720         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
1721
1722         if (priv->vlan_attach != NULL)
1723                 EVENTHANDLER_DEREGISTER(vlan_config, priv->vlan_attach);
1724         if (priv->vlan_detach != NULL)
1725                 EVENTHANDLER_DEREGISTER(vlan_unconfig, priv->vlan_detach);
1726
1727         /* Unregister device - this will close the port if it was up */
1728         if (priv->registered) {
1729                 mutex_lock(&mdev->state_lock);
1730                 ether_ifdetach(dev);
1731                 mutex_unlock(&mdev->state_lock);
1732         }
1733
1734         mutex_lock(&mdev->state_lock);
1735         mlx4_en_stop_port(dev);
1736         mutex_unlock(&mdev->state_lock);
1737
1738         if (priv->allocated)
1739                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
1740
1741         cancel_delayed_work(&priv->stats_task);
1742         cancel_delayed_work(&priv->service_task);
1743         /* flush any pending task for this netdev */
1744         flush_workqueue(mdev->workqueue);
1745         callout_drain(&priv->watchdog_timer);
1746
1747         /* Detach the netdev so tasks would not attempt to access it */
1748         mutex_lock(&mdev->state_lock);
1749         mdev->pndev[priv->port] = NULL;
1750         mutex_unlock(&mdev->state_lock);
1751
1752
1753         mlx4_en_free_resources(priv);
1754
1755         /* freeing the sysctl conf cannot be called from within mlx4_en_free_resources */
1756         if (priv->conf_sysctl != NULL)
1757                 sysctl_ctx_free(&priv->conf_ctx);
1758
1759         kfree(priv->tx_ring);
1760         kfree(priv->tx_cq);
1761
1762         kfree(priv);
1763         if_free(dev);
1764
1765 }
1766
1767 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
1768 {
1769         struct mlx4_en_priv *priv = netdev_priv(dev);
1770         struct mlx4_en_dev *mdev = priv->mdev;
1771         int err = 0;
1772
1773         en_dbg(DRV, priv, "Change MTU called - current:%u new:%u\n",
1774                (unsigned)dev->if_mtu, (unsigned)new_mtu);
1775
1776         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
1777                 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
1778                 return -EPERM;
1779         }
1780         mutex_lock(&mdev->state_lock);
1781         dev->if_mtu = new_mtu;
1782         if (dev->if_drv_flags & IFF_DRV_RUNNING) {
1783                 if (!mdev->device_up) {
1784                         /* NIC is probably restarting - let watchdog task reset
1785                          *                          * the port */
1786                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
1787                 } else {
1788                         mlx4_en_stop_port(dev);
1789                         err = mlx4_en_start_port(dev);
1790                         if (err) {
1791                                 en_err(priv, "Failed restarting port:%d\n",
1792                                                 priv->port);
1793                                 queue_work(mdev->workqueue, &priv->watchdog_task);
1794                         }
1795                 }
1796         }
1797         mutex_unlock(&mdev->state_lock);
1798         return 0;
1799 }
1800
1801 static int mlx4_en_calc_media(struct mlx4_en_priv *priv)
1802 {
1803         int trans_type;
1804         int active;
1805
1806         active = IFM_ETHER;
1807         if (priv->last_link_state == MLX4_DEV_EVENT_PORT_DOWN)
1808                 return (active);
1809         active |= IFM_FDX;
1810         trans_type = priv->port_state.transciver;
1811         /* XXX I don't know all of the transceiver values. */
1812         switch (priv->port_state.link_speed) {
1813         case 1000:
1814                 active |= IFM_1000_T;
1815                 break;
1816         case 10000:
1817                 if (trans_type > 0 && trans_type <= 0xC)
1818                         active |= IFM_10G_SR;
1819                 else if (trans_type == 0x80 || trans_type == 0)
1820                         active |= IFM_10G_CX4;
1821                 break;
1822         case 40000:
1823                 active |= IFM_40G_CR4;
1824                 break;
1825         }
1826         if (priv->prof->tx_pause)
1827                 active |= IFM_ETH_TXPAUSE;
1828         if (priv->prof->rx_pause)
1829                 active |= IFM_ETH_RXPAUSE;
1830
1831         return (active);
1832 }
1833
1834 static void mlx4_en_media_status(struct ifnet *dev, struct ifmediareq *ifmr)
1835 {
1836         struct mlx4_en_priv *priv;
1837
1838         priv = dev->if_softc;
1839         ifmr->ifm_status = IFM_AVALID;
1840         if (priv->last_link_state != MLX4_DEV_EVENT_PORT_DOWN)
1841                 ifmr->ifm_status |= IFM_ACTIVE;
1842         ifmr->ifm_active = mlx4_en_calc_media(priv);
1843
1844         return;
1845 }
1846
1847 static int mlx4_en_media_change(struct ifnet *dev)
1848 {
1849         struct mlx4_en_priv *priv;
1850         struct ifmedia *ifm;
1851         int rxpause;
1852         int txpause;
1853         int error;
1854
1855         priv = dev->if_softc;
1856         ifm = &priv->media;
1857         rxpause = txpause = 0;
1858         error = 0;
1859
1860         if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1861                 return (EINVAL);
1862         switch (IFM_SUBTYPE(ifm->ifm_media)) {
1863         case IFM_AUTO:
1864                 break;
1865         case IFM_10G_SR:
1866         case IFM_10G_CX4:
1867         case IFM_1000_T:
1868         case IFM_40G_CR4:
1869                 if ((IFM_SUBTYPE(ifm->ifm_media)
1870                         == IFM_SUBTYPE(mlx4_en_calc_media(priv)))
1871                         && (ifm->ifm_media & IFM_FDX))
1872                         break;
1873                 /* Fallthrough */
1874         default:
1875                 printf("%s: Only auto media type\n", if_name(dev));
1876                 return (EINVAL);
1877         }
1878         /* Allow user to set/clear pause */
1879         if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_RXPAUSE)
1880                 rxpause = 1;
1881         if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_TXPAUSE)
1882                 txpause = 1;
1883         if (priv->prof->tx_pause != txpause || priv->prof->rx_pause != rxpause) {
1884                 priv->prof->tx_pause = txpause;
1885                 priv->prof->rx_pause = rxpause;
1886                 error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
1887                      priv->rx_mb_size + ETHER_CRC_LEN, priv->prof->tx_pause,
1888                      priv->prof->tx_ppp, priv->prof->rx_pause,
1889                      priv->prof->rx_ppp);
1890         }
1891         return (error);
1892 }
1893
1894 static int mlx4_en_ioctl(struct ifnet *dev, u_long command, caddr_t data)
1895 {
1896         struct mlx4_en_priv *priv;
1897         struct mlx4_en_dev *mdev;
1898         struct ifreq *ifr;
1899         int error;
1900         int mask;
1901
1902         error = 0;
1903         mask = 0;
1904         priv = dev->if_softc;
1905         mdev = priv->mdev;
1906         ifr = (struct ifreq *) data;
1907         switch (command) {
1908
1909         case SIOCSIFMTU:
1910                 error = -mlx4_en_change_mtu(dev, ifr->ifr_mtu);
1911                 break;
1912         case SIOCSIFFLAGS:
1913                 if (dev->if_flags & IFF_UP) {
1914                         if ((dev->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1915                                 mutex_lock(&mdev->state_lock);
1916                                 mlx4_en_start_port(dev);
1917                                 mutex_unlock(&mdev->state_lock);
1918                         } else {
1919                                 mlx4_en_set_rx_mode(dev);
1920                         }
1921                 } else {
1922                         mutex_lock(&mdev->state_lock);
1923                         if (dev->if_drv_flags & IFF_DRV_RUNNING) {
1924                                 mlx4_en_stop_port(dev);
1925                                 if_link_state_change(dev, LINK_STATE_DOWN);
1926                         }
1927                         mutex_unlock(&mdev->state_lock);
1928                 }
1929                 break;
1930         case SIOCADDMULTI:
1931         case SIOCDELMULTI:
1932                 mlx4_en_set_rx_mode(dev);
1933                 break;
1934         case SIOCSIFMEDIA:
1935         case SIOCGIFMEDIA:
1936                 error = ifmedia_ioctl(dev, ifr, &priv->media, command);
1937                 break;
1938         case SIOCSIFCAP:
1939                 mutex_lock(&mdev->state_lock);
1940                 mask = ifr->ifr_reqcap ^ dev->if_capenable;
1941                 if (mask & IFCAP_TXCSUM) {
1942                         dev->if_capenable ^= IFCAP_TXCSUM;
1943                         dev->if_hwassist ^= (CSUM_TCP | CSUM_UDP | CSUM_IP);
1944
1945                         if (IFCAP_TSO4 & dev->if_capenable &&
1946                             !(IFCAP_TXCSUM & dev->if_capenable)) {
1947                                 dev->if_capenable &= ~IFCAP_TSO4;
1948                                 dev->if_hwassist &= ~CSUM_TSO;
1949                                 if_printf(dev,
1950                                     "tso4 disabled due to -txcsum.\n");
1951                         }
1952                 }
1953                 if (mask & IFCAP_TXCSUM_IPV6) {
1954                         dev->if_capenable ^= IFCAP_TXCSUM_IPV6;
1955                         dev->if_hwassist ^= (CSUM_UDP_IPV6 | CSUM_TCP_IPV6);
1956
1957                         if (IFCAP_TSO6 & dev->if_capenable &&
1958                             !(IFCAP_TXCSUM_IPV6 & dev->if_capenable)) {
1959                                 dev->if_capenable &= ~IFCAP_TSO6;
1960                                 dev->if_hwassist &= ~CSUM_TSO;
1961                                 if_printf(dev,
1962                                     "tso6 disabled due to -txcsum6.\n");
1963                         }
1964                 }
1965                 if (mask & IFCAP_RXCSUM)
1966                         dev->if_capenable ^= IFCAP_RXCSUM;
1967                 if (mask & IFCAP_RXCSUM_IPV6)
1968                         dev->if_capenable ^= IFCAP_RXCSUM_IPV6;
1969
1970                 if (mask & IFCAP_TSO4) {
1971                         if (!(IFCAP_TSO4 & dev->if_capenable) &&
1972                             !(IFCAP_TXCSUM & dev->if_capenable)) {
1973                                 if_printf(dev, "enable txcsum first.\n");
1974                                 error = EAGAIN;
1975                                 goto out;
1976                         }
1977                         dev->if_capenable ^= IFCAP_TSO4;
1978                 }
1979                 if (mask & IFCAP_TSO6) {
1980                         if (!(IFCAP_TSO6 & dev->if_capenable) &&
1981                             !(IFCAP_TXCSUM_IPV6 & dev->if_capenable)) {
1982                                 if_printf(dev, "enable txcsum6 first.\n");
1983                                 error = EAGAIN;
1984                                 goto out;
1985                         }
1986                         dev->if_capenable ^= IFCAP_TSO6;
1987                 }
1988                 if (dev->if_capenable & (IFCAP_TSO4 | IFCAP_TSO6))
1989                         dev->if_hwassist |= CSUM_TSO;
1990                 else
1991                         dev->if_hwassist &= ~CSUM_TSO;
1992                 if (mask & IFCAP_LRO)
1993                         dev->if_capenable ^= IFCAP_LRO;
1994                 if (mask & IFCAP_VLAN_HWTAGGING)
1995                         dev->if_capenable ^= IFCAP_VLAN_HWTAGGING;
1996                 if (mask & IFCAP_VLAN_HWFILTER)
1997                         dev->if_capenable ^= IFCAP_VLAN_HWFILTER;
1998                 if (mask & IFCAP_WOL_MAGIC)
1999                         dev->if_capenable ^= IFCAP_WOL_MAGIC;
2000                 if (dev->if_drv_flags & IFF_DRV_RUNNING)
2001                         mlx4_en_start_port(dev);
2002 out:
2003                 mutex_unlock(&mdev->state_lock);
2004                 VLAN_CAPABILITIES(dev);
2005                 break;
2006 #if __FreeBSD_version >= 1100036
2007         case SIOCGI2C: {
2008                 struct ifi2creq i2c;
2009
2010                 error = copyin(ifr->ifr_data, &i2c, sizeof(i2c));
2011                 if (error)
2012                         break;
2013                 if (i2c.len > sizeof(i2c.data)) {
2014                         error = EINVAL;
2015                         break;
2016                 }
2017                 /*
2018                  * Note that we ignore i2c.addr here. The driver hardcodes
2019                  * the address to 0x50, while standard expects it to be 0xA0.
2020                  */
2021                 error = mlx4_get_module_info(mdev->dev, priv->port,
2022                     i2c.offset, i2c.len, i2c.data);
2023                 if (error < 0) {
2024                         error = -error;
2025                         break;
2026                 }
2027                 error = copyout(&i2c, ifr->ifr_data, sizeof(i2c));
2028                 break;
2029         }
2030 #endif
2031         default:
2032                 error = ether_ioctl(dev, command, data);
2033                 break;
2034         }
2035
2036         return (error);
2037 }
2038
2039
2040 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2041                         struct mlx4_en_port_profile *prof)
2042 {
2043         struct net_device *dev;
2044         struct mlx4_en_priv *priv;
2045         uint8_t dev_addr[ETHER_ADDR_LEN];
2046         int err;
2047         int i;
2048
2049         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
2050         dev = priv->dev = if_alloc(IFT_ETHER);
2051         if (dev == NULL) {
2052                 en_err(priv, "Net device allocation failed\n");
2053                 kfree(priv);
2054                 return -ENOMEM;
2055         }
2056         dev->if_softc = priv;
2057         if_initname(dev, "mlxen", (device_get_unit(
2058             mdev->pdev->dev.bsddev) * MLX4_MAX_PORTS) + port - 1);
2059         dev->if_mtu = ETHERMTU;
2060         dev->if_init = mlx4_en_open;
2061         dev->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
2062         dev->if_ioctl = mlx4_en_ioctl;
2063         dev->if_transmit = mlx4_en_transmit;
2064         dev->if_qflush = mlx4_en_qflush;
2065         dev->if_snd.ifq_maxlen = prof->tx_ring_size;
2066
2067         /*
2068          * Initialize driver private data
2069          */
2070         priv->counter_index = 0xff;
2071         spin_lock_init(&priv->stats_lock);
2072         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2073         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2074         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2075         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2076         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2077         callout_init(&priv->watchdog_timer, 1);
2078 #ifdef CONFIG_RFS_ACCEL
2079         INIT_LIST_HEAD(&priv->filters);
2080         spin_lock_init(&priv->filters_lock);
2081 #endif
2082
2083         priv->msg_enable = MLX4_EN_MSG_LEVEL;
2084         priv->dev = dev;
2085         priv->mdev = mdev;
2086         priv->ddev = &mdev->pdev->dev;
2087         priv->prof = prof;
2088         priv->port = port;
2089         priv->port_up = false;
2090         priv->flags = prof->flags;
2091
2092         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2093         priv->tx_ring_num = prof->tx_ring_num;
2094         priv->tx_ring = kcalloc(MAX_TX_RINGS,
2095                                 sizeof(struct mlx4_en_tx_ring *), GFP_KERNEL);
2096         if (!priv->tx_ring) {
2097                 err = -ENOMEM;
2098                 goto out;
2099         }
2100         priv->tx_cq = kcalloc(sizeof(struct mlx4_en_cq *), MAX_TX_RINGS,
2101                         GFP_KERNEL);
2102         if (!priv->tx_cq) {
2103                 err = -ENOMEM;
2104                 goto out;
2105         }
2106
2107         priv->rx_ring_num = prof->rx_ring_num;
2108         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2109         priv->mac_index = -1;
2110         priv->last_ifq_jiffies = 0;
2111         priv->if_counters_rx_errors = 0;
2112         priv->if_counters_rx_no_buffer = 0;
2113 #ifdef CONFIG_MLX4_EN_DCB
2114         if (!mlx4_is_slave(priv->mdev->dev)) {
2115                 priv->dcbx_cap = DCB_CAP_DCBX_HOST;
2116                 priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
2117                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
2118                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2119                 } else {
2120                         en_info(priv, "QoS disabled - no HW support\n");
2121                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2122                 }
2123         }
2124 #endif
2125
2126         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2127                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2128
2129         /* Query for default mac and max mtu */
2130         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2131         priv->mac = mdev->dev->caps.def_mac[priv->port];
2132         if (ILLEGAL_MAC(priv->mac)) {
2133 #if BITS_PER_LONG == 64
2134                 en_err(priv, "Port: %d, invalid mac burned: 0x%lx, quiting\n",
2135                                 priv->port, priv->mac);
2136 #elif BITS_PER_LONG == 32
2137                 en_err(priv, "Port: %d, invalid mac burned: 0x%llx, quiting\n",
2138                                 priv->port, priv->mac);
2139 #endif
2140                 err = -EINVAL;
2141                 goto out;
2142         }
2143
2144         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2145                                           DS_SIZE);
2146
2147         mlx4_en_sysctl_conf(priv);
2148
2149         err = mlx4_en_alloc_resources(priv);
2150         if (err)
2151                 goto out;
2152
2153         /* Allocate page for receive rings */
2154         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2155                                 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2156         if (err) {
2157                 en_err(priv, "Failed to allocate page for rx qps\n");
2158                 goto out;
2159         }
2160         priv->allocated = 1;
2161
2162         /*
2163          * Set driver features
2164          */
2165         dev->if_capabilities |= IFCAP_HWCSUM | IFCAP_HWCSUM_IPV6;
2166         dev->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING;
2167         dev->if_capabilities |= IFCAP_VLAN_HWCSUM | IFCAP_VLAN_HWFILTER;
2168         dev->if_capabilities |= IFCAP_LINKSTATE | IFCAP_JUMBO_MTU;
2169         dev->if_capabilities |= IFCAP_LRO;
2170
2171         if (mdev->LSO_support)
2172                 dev->if_capabilities |= IFCAP_TSO4 | IFCAP_TSO6 | IFCAP_VLAN_HWTSO;
2173
2174         /* set TSO limits so that we don't have to drop TX packets */
2175         dev->if_hw_tsomax = MLX4_EN_TX_MAX_PAYLOAD_SIZE - (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN) /* hdr */;
2176         dev->if_hw_tsomaxsegcount = MLX4_EN_TX_MAX_MBUF_FRAGS - 1 /* hdr */;
2177         dev->if_hw_tsomaxsegsize = MLX4_EN_TX_MAX_MBUF_SIZE;
2178
2179         dev->if_capenable = dev->if_capabilities;
2180
2181         dev->if_hwassist = 0;
2182         if (dev->if_capenable & (IFCAP_TSO4 | IFCAP_TSO6))
2183                 dev->if_hwassist |= CSUM_TSO;
2184         if (dev->if_capenable & IFCAP_TXCSUM)
2185                 dev->if_hwassist |= (CSUM_TCP | CSUM_UDP | CSUM_IP);
2186         if (dev->if_capenable & IFCAP_TXCSUM_IPV6)
2187                 dev->if_hwassist |= (CSUM_UDP_IPV6 | CSUM_TCP_IPV6);
2188
2189
2190         /* Register for VLAN events */
2191         priv->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
2192             mlx4_en_vlan_rx_add_vid, priv, EVENTHANDLER_PRI_FIRST);
2193         priv->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
2194             mlx4_en_vlan_rx_kill_vid, priv, EVENTHANDLER_PRI_FIRST);
2195
2196         mdev->pndev[priv->port] = dev;
2197
2198         priv->last_link_state = MLX4_DEV_EVENT_PORT_DOWN;
2199         mlx4_en_set_default_moderation(priv);
2200
2201         /* Set default MAC */
2202         for (i = 0; i < ETHER_ADDR_LEN; i++)
2203                 dev_addr[ETHER_ADDR_LEN - 1 - i] = (u8) (priv->mac >> (8 * i));
2204
2205
2206         ether_ifattach(dev, dev_addr);
2207         if_link_state_change(dev, LINK_STATE_DOWN);
2208         ifmedia_init(&priv->media, IFM_IMASK | IFM_ETH_FMASK,
2209             mlx4_en_media_change, mlx4_en_media_status);
2210         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_1000_T, 0, NULL);
2211         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_SR, 0, NULL);
2212         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_CX4, 0, NULL);
2213         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_40G_CR4, 0, NULL);
2214         ifmedia_add(&priv->media, IFM_ETHER | IFM_AUTO, 0, NULL);
2215         ifmedia_set(&priv->media, IFM_ETHER | IFM_AUTO);
2216
2217         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2218         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2219
2220         priv->registered = 1;
2221
2222         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2223         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2224
2225
2226         priv->rx_mb_size = dev->if_mtu + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN;
2227         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2228                                     priv->rx_mb_size,
2229                                     prof->tx_pause, prof->tx_ppp,
2230                                     prof->rx_pause, prof->rx_ppp);
2231         if (err) {
2232                 en_err(priv, "Failed setting port general configurations "
2233                        "for port %d, with error %d\n", priv->port, err);
2234                 goto out;
2235         }
2236
2237         /* Init port */
2238         en_warn(priv, "Initializing port\n");
2239         err = mlx4_INIT_PORT(mdev->dev, priv->port);
2240         if (err) {
2241                 en_err(priv, "Failed Initializing port\n");
2242                 goto out;
2243         }
2244
2245         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2246
2247         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2248                 queue_delayed_work(mdev->workqueue, &priv->service_task, SERVICE_TASK_DELAY);
2249
2250         return 0;
2251
2252 out:
2253         mlx4_en_destroy_netdev(dev);
2254         return err;
2255 }
2256
2257 static int mlx4_en_set_ring_size(struct net_device *dev,
2258     int rx_size, int tx_size)
2259 {
2260         struct mlx4_en_priv *priv = netdev_priv(dev);
2261         struct mlx4_en_dev *mdev = priv->mdev;
2262         int port_up = 0;
2263         int err = 0;
2264
2265         rx_size = roundup_pow_of_two(rx_size);
2266         rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE);
2267         rx_size = min_t(u32, rx_size, MLX4_EN_MAX_RX_SIZE);
2268         tx_size = roundup_pow_of_two(tx_size);
2269         tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE);
2270         tx_size = min_t(u32, tx_size, MLX4_EN_MAX_TX_SIZE);
2271
2272         if (rx_size == (priv->port_up ?
2273             priv->rx_ring[0]->actual_size : priv->rx_ring[0]->size) &&
2274             tx_size == priv->tx_ring[0]->size)
2275                 return 0;
2276         mutex_lock(&mdev->state_lock);
2277         if (priv->port_up) {
2278                 port_up = 1;
2279                 mlx4_en_stop_port(dev);
2280         }
2281         mlx4_en_free_resources(priv);
2282         priv->prof->tx_ring_size = tx_size;
2283         priv->prof->rx_ring_size = rx_size;
2284         err = mlx4_en_alloc_resources(priv);
2285         if (err) {
2286                 en_err(priv, "Failed reallocating port resources\n");
2287                 goto out;
2288         }
2289         if (port_up) {
2290                 err = mlx4_en_start_port(dev);
2291                 if (err)
2292                         en_err(priv, "Failed starting port\n");
2293         }
2294 out:
2295         mutex_unlock(&mdev->state_lock);
2296         return err;
2297 }
2298 static int mlx4_en_set_rx_ring_size(SYSCTL_HANDLER_ARGS)
2299 {
2300         struct mlx4_en_priv *priv;
2301         int size;
2302         int error;
2303
2304         priv = arg1;
2305         size = priv->prof->rx_ring_size;
2306         error = sysctl_handle_int(oidp, &size, 0, req);
2307         if (error || !req->newptr)
2308                 return (error);
2309         error = -mlx4_en_set_ring_size(priv->dev, size,
2310             priv->prof->tx_ring_size);
2311         return (error);
2312 }
2313
2314 static int mlx4_en_set_tx_ring_size(SYSCTL_HANDLER_ARGS)
2315 {
2316         struct mlx4_en_priv *priv;
2317         int size;
2318         int error;
2319
2320         priv = arg1;
2321         size = priv->prof->tx_ring_size;
2322         error = sysctl_handle_int(oidp, &size, 0, req);
2323         if (error || !req->newptr)
2324                 return (error);
2325         error = -mlx4_en_set_ring_size(priv->dev, priv->prof->rx_ring_size,
2326             size);
2327
2328         return (error);
2329 }
2330
2331 static int mlx4_en_get_module_info(struct net_device *dev,
2332                                    struct ethtool_modinfo *modinfo)
2333 {
2334         struct mlx4_en_priv *priv = netdev_priv(dev);
2335         struct mlx4_en_dev *mdev = priv->mdev;
2336         int ret;
2337         u8 data[4];
2338
2339         /* Read first 2 bytes to get Module & REV ID */
2340         ret = mlx4_get_module_info(mdev->dev, priv->port,
2341                                    0/*offset*/, 2/*size*/, data);
2342
2343         if (ret < 2) {
2344                 en_err(priv, "Failed to read eeprom module first two bytes, error: 0x%x\n", -ret);
2345                 return -EIO;
2346         }
2347
2348         switch (data[0] /* identifier */) {
2349         case MLX4_MODULE_ID_QSFP:
2350                 modinfo->type = ETH_MODULE_SFF_8436;
2351                 modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
2352                 break;
2353         case MLX4_MODULE_ID_QSFP_PLUS:
2354                 if (data[1] >= 0x3) { /* revision id */
2355                         modinfo->type = ETH_MODULE_SFF_8636;
2356                         modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
2357                 } else {
2358                         modinfo->type = ETH_MODULE_SFF_8436;
2359                         modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
2360                 }
2361                 break;
2362         case MLX4_MODULE_ID_QSFP28:
2363                 modinfo->type = ETH_MODULE_SFF_8636;
2364                 modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
2365                 break;
2366         case MLX4_MODULE_ID_SFP:
2367                 modinfo->type = ETH_MODULE_SFF_8472;
2368                 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
2369                 break;
2370         default:
2371                 en_err(priv, "mlx4_en_get_module_info :  Not recognized cable type\n");
2372                 return -EINVAL;
2373         }
2374
2375         return 0;
2376 }
2377
2378 static int mlx4_en_get_module_eeprom(struct net_device *dev,
2379                                      struct ethtool_eeprom *ee,
2380                                      u8 *data)
2381 {
2382         struct mlx4_en_priv *priv = netdev_priv(dev);
2383         struct mlx4_en_dev *mdev = priv->mdev;
2384         int offset = ee->offset;
2385         int i = 0, ret;
2386
2387         if (ee->len == 0)
2388                 return -EINVAL;
2389
2390         memset(data, 0, ee->len);
2391
2392         while (i < ee->len) {
2393                 en_dbg(DRV, priv,
2394                        "mlx4_get_module_info i(%d) offset(%d) len(%d)\n",
2395                        i, offset, ee->len - i);
2396
2397                 ret = mlx4_get_module_info(mdev->dev, priv->port,
2398                                            offset, ee->len - i, data + i);
2399
2400                 if (!ret) /* Done reading */
2401                         return 0;
2402
2403                 if (ret < 0) {
2404                         en_err(priv,
2405                                "mlx4_get_module_info i(%d) offset(%d) bytes_to_read(%d) - FAILED (0x%x)\n",
2406                                i, offset, ee->len - i, ret);
2407                         return -1;
2408                 }
2409
2410                 i += ret;
2411                 offset += ret;
2412         }
2413         return 0;
2414 }
2415
2416 static void mlx4_en_print_eeprom(u8 *data, __u32 len)
2417 {
2418         int             i;
2419         int             j = 0;
2420         int             row = 0;
2421         const int       NUM_OF_BYTES = 16;
2422
2423         printf("\nOffset\t\tValues\n");
2424         printf("------\t\t------\n");
2425         while(row < len){
2426                 printf("0x%04x\t\t",row);
2427                 for(i=0; i < NUM_OF_BYTES; i++){
2428                         printf("%02x ", data[j]);
2429                         row++;
2430                         j++;
2431                 }
2432                 printf("\n");
2433         }
2434 }
2435
2436 /* Read cable EEPROM module information by first inspecting the first
2437  * two bytes to get the length and then read the rest of the information.
2438  * The information is printed to dmesg. */
2439 static int mlx4_en_read_eeprom(SYSCTL_HANDLER_ARGS)
2440 {
2441
2442         u8*             data;
2443         int             error;
2444         int             result = 0;
2445         struct          mlx4_en_priv *priv;
2446         struct          net_device *dev;
2447         struct          ethtool_modinfo modinfo;
2448         struct          ethtool_eeprom ee;
2449
2450         error = sysctl_handle_int(oidp, &result, 0, req);
2451         if (error || !req->newptr)
2452                 return (error);
2453
2454         if (result == 1) {
2455                 priv = arg1;
2456                 dev = priv->dev;
2457                 data = kmalloc(PAGE_SIZE, GFP_KERNEL);
2458
2459                 error = mlx4_en_get_module_info(dev, &modinfo);
2460                 if (error) {
2461                         en_err(priv,
2462                                "mlx4_en_get_module_info returned with error - FAILED (0x%x)\n",
2463                                -error);
2464                         goto out;
2465                 }
2466
2467                 ee.len = modinfo.eeprom_len;
2468                 ee.offset = 0;
2469
2470                 error = mlx4_en_get_module_eeprom(dev, &ee, data);
2471                 if (error) {
2472                         en_err(priv,
2473                                "mlx4_en_get_module_eeprom returned with error - FAILED (0x%x)\n",
2474                                -error);
2475                         /* Continue printing partial information in case of an error */
2476                 }
2477
2478                 /* EEPROM information will be printed in dmesg */
2479                 mlx4_en_print_eeprom(data, ee.len);
2480 out:
2481                 kfree(data);
2482         }
2483         /* Return zero to prevent sysctl failure. */
2484         return (0);
2485 }
2486
2487 static int mlx4_en_set_tx_ppp(SYSCTL_HANDLER_ARGS)
2488 {
2489         struct mlx4_en_priv *priv;
2490         int ppp;
2491         int error;
2492
2493         priv = arg1;
2494         ppp = priv->prof->tx_ppp;
2495         error = sysctl_handle_int(oidp, &ppp, 0, req);
2496         if (error || !req->newptr)
2497                 return (error);
2498         if (ppp > 0xff || ppp < 0)
2499                 return (-EINVAL);
2500         priv->prof->tx_ppp = ppp;
2501         error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
2502                                        priv->rx_mb_size + ETHER_CRC_LEN,
2503                                        priv->prof->tx_pause,
2504                                        priv->prof->tx_ppp,
2505                                        priv->prof->rx_pause,
2506                                        priv->prof->rx_ppp);
2507
2508         return (error);
2509 }
2510
2511 static int mlx4_en_set_rx_ppp(SYSCTL_HANDLER_ARGS)
2512 {
2513         struct mlx4_en_priv *priv;
2514         struct mlx4_en_dev *mdev;
2515         int ppp;
2516         int error;
2517         int port_up;
2518
2519         port_up = 0;
2520         priv = arg1;
2521         mdev = priv->mdev;
2522         ppp = priv->prof->rx_ppp;
2523         error = sysctl_handle_int(oidp, &ppp, 0, req);
2524         if (error || !req->newptr)
2525                 return (error);
2526         if (ppp > 0xff || ppp < 0)
2527                 return (-EINVAL);
2528         /* See if we have to change the number of tx queues. */
2529         if (!ppp != !priv->prof->rx_ppp) {
2530                 mutex_lock(&mdev->state_lock);
2531                 if (priv->port_up) {
2532                         port_up = 1;
2533                         mlx4_en_stop_port(priv->dev);
2534                 }
2535                 mlx4_en_free_resources(priv);
2536                 priv->prof->rx_ppp = ppp;
2537                 error = -mlx4_en_alloc_resources(priv);
2538                 if (error)
2539                         en_err(priv, "Failed reallocating port resources\n");
2540                 if (error == 0 && port_up) {
2541                         error = -mlx4_en_start_port(priv->dev);
2542                         if (error)
2543                                 en_err(priv, "Failed starting port\n");
2544                 }
2545                 mutex_unlock(&mdev->state_lock);
2546                 return (error);
2547
2548         }
2549         priv->prof->rx_ppp = ppp;
2550         error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
2551                                        priv->rx_mb_size + ETHER_CRC_LEN,
2552                                        priv->prof->tx_pause,
2553                                        priv->prof->tx_ppp,
2554                                        priv->prof->rx_pause,
2555                                        priv->prof->rx_ppp);
2556
2557         return (error);
2558 }
2559
2560 static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv)
2561 {
2562         struct net_device *dev;
2563         struct sysctl_ctx_list *ctx;
2564         struct sysctl_oid *node;
2565         struct sysctl_oid_list *node_list;
2566         struct sysctl_oid *coal;
2567         struct sysctl_oid_list *coal_list;
2568         const char *pnameunit;
2569
2570         dev = priv->dev;
2571         ctx = &priv->conf_ctx;
2572         pnameunit = device_get_nameunit(priv->mdev->pdev->dev.bsddev);
2573
2574         sysctl_ctx_init(ctx);
2575         priv->conf_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw),
2576             OID_AUTO, dev->if_xname, CTLFLAG_RD, 0, "mlx4 10gig ethernet");
2577         node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->conf_sysctl), OID_AUTO,
2578             "conf", CTLFLAG_RD, NULL, "Configuration");
2579         node_list = SYSCTL_CHILDREN(node);
2580
2581         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "msg_enable",
2582             CTLFLAG_RW, &priv->msg_enable, 0,
2583             "Driver message enable bitfield");
2584         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_rings",
2585             CTLFLAG_RD, &priv->rx_ring_num, 0,
2586             "Number of receive rings");
2587         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_rings",
2588             CTLFLAG_RD, &priv->tx_ring_num, 0,
2589             "Number of transmit rings");
2590         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_size",
2591             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2592             mlx4_en_set_rx_ring_size, "I", "Receive ring size");
2593         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_size",
2594             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2595             mlx4_en_set_tx_ring_size, "I", "Transmit ring size");
2596         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_ppp",
2597             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2598             mlx4_en_set_tx_ppp, "I", "TX Per-priority pause");
2599         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_ppp",
2600             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2601             mlx4_en_set_rx_ppp, "I", "RX Per-priority pause");
2602         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "port_num",
2603             CTLFLAG_RD, &priv->port, 0,
2604             "Port Number");
2605         SYSCTL_ADD_STRING(ctx, node_list, OID_AUTO, "device_name",
2606             CTLFLAG_RD, __DECONST(void *, pnameunit), 0,
2607             "PCI device name");
2608
2609         /* Add coalescer configuration. */
2610         coal = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO,
2611             "coalesce", CTLFLAG_RD, NULL, "Interrupt coalesce configuration");
2612         coal_list = SYSCTL_CHILDREN(coal);
2613         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_low",
2614             CTLFLAG_RW, &priv->pkt_rate_low, 0,
2615             "Packets per-second for minimum delay");
2616         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_low",
2617             CTLFLAG_RW, &priv->rx_usecs_low, 0,
2618             "Minimum RX delay in micro-seconds");
2619         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_high",
2620             CTLFLAG_RW, &priv->pkt_rate_high, 0,
2621             "Packets per-second for maximum delay");
2622         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_high",
2623             CTLFLAG_RW, &priv->rx_usecs_high, 0,
2624             "Maximum RX delay in micro-seconds");
2625         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "sample_interval",
2626             CTLFLAG_RW, &priv->sample_interval, 0,
2627             "adaptive frequency in units of HZ ticks");
2628         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "adaptive_rx_coal",
2629             CTLFLAG_RW, &priv->adaptive_rx_coal, 0,
2630             "Enable adaptive rx coalescing");
2631         /* EEPROM support */
2632         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "eeprom_info",
2633             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2634             mlx4_en_read_eeprom, "I", "EEPROM information");
2635 }
2636
2637 static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv)
2638 {
2639         struct sysctl_ctx_list *ctx;
2640         struct sysctl_oid_list *node_list;
2641         struct sysctl_oid *ring_node;
2642         struct sysctl_oid_list *ring_list;
2643         struct mlx4_en_tx_ring *tx_ring;
2644         struct mlx4_en_rx_ring *rx_ring;
2645         char namebuf[128];
2646         int i;
2647
2648         ctx = &priv->stat_ctx;
2649         sysctl_ctx_init(ctx);
2650         priv->stat_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->conf_sysctl), OID_AUTO,
2651             "stat", CTLFLAG_RD, NULL, "Statistics");
2652         node_list = SYSCTL_CHILDREN(priv->stat_sysctl);
2653
2654 #ifdef MLX4_EN_PERF_STAT
2655         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_poll", CTLFLAG_RD,
2656             &priv->pstats.tx_poll, "TX Poll calls");
2657         SYSCTL_ADD_QUAD(ctx, node_list, OID_AUTO, "tx_pktsz_avg", CTLFLAG_RD,
2658             &priv->pstats.tx_pktsz_avg, "TX average packet size");
2659         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "inflight_avg", CTLFLAG_RD,
2660             &priv->pstats.inflight_avg, "TX average packets in-flight");
2661         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_coal_avg", CTLFLAG_RD,
2662             &priv->pstats.tx_coal_avg, "TX average coalesced completions");
2663         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_coal_avg", CTLFLAG_RD,
2664             &priv->pstats.rx_coal_avg, "RX average coalesced completions");
2665 #endif
2666
2667         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tso_packets", CTLFLAG_RD,
2668             &priv->port_stats.tso_packets, "TSO packets sent");
2669         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "queue_stopped", CTLFLAG_RD,
2670             &priv->port_stats.queue_stopped, "Queue full");
2671         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "wake_queue", CTLFLAG_RD,
2672             &priv->port_stats.wake_queue, "Queue resumed after full");
2673         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_timeout", CTLFLAG_RD,
2674             &priv->port_stats.tx_timeout, "Transmit timeouts");
2675         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_oversized_packets", CTLFLAG_RD,
2676             &priv->port_stats.oversized_packets, "TX oversized packets, m_defrag failed");
2677         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_alloc_failed", CTLFLAG_RD,
2678             &priv->port_stats.rx_alloc_failed, "RX failed to allocate mbuf");
2679         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_chksum_good", CTLFLAG_RD,
2680             &priv->port_stats.rx_chksum_good, "RX checksum offload success");
2681         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_chksum_none", CTLFLAG_RD,
2682             &priv->port_stats.rx_chksum_none, "RX without checksum offload");
2683         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_chksum_offload",
2684             CTLFLAG_RD, &priv->port_stats.tx_chksum_offload,
2685             "TX checksum offloads");
2686
2687         /* Could strdup the names and add in a loop.  This is simpler. */
2688         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_bytes", CTLFLAG_RD,
2689             &priv->pkstats.rx_bytes, "RX Bytes");
2690         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_packets", CTLFLAG_RD,
2691             &priv->pkstats.rx_packets, "RX packets");
2692         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_multicast_packets", CTLFLAG_RD,
2693             &priv->pkstats.rx_multicast_packets, "RX Multicast Packets");
2694         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_broadcast_packets", CTLFLAG_RD,
2695             &priv->pkstats.rx_broadcast_packets, "RX Broadcast Packets");
2696         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_errors", CTLFLAG_RD,
2697             &priv->pkstats.rx_errors, "RX Errors");
2698         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_dropped", CTLFLAG_RD,
2699             &priv->pkstats.rx_dropped, "RX Dropped");
2700         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_length_errors", CTLFLAG_RD,
2701             &priv->pkstats.rx_length_errors, "RX Length Errors");
2702         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_over_errors", CTLFLAG_RD,
2703             &priv->pkstats.rx_over_errors, "RX Over Errors");
2704         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_crc_errors", CTLFLAG_RD,
2705             &priv->pkstats.rx_crc_errors, "RX CRC Errors");
2706         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_jabbers", CTLFLAG_RD,
2707             &priv->pkstats.rx_jabbers, "RX Jabbers");
2708
2709
2710         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_in_range_length_error", CTLFLAG_RD,
2711             &priv->pkstats.rx_in_range_length_error, "RX IN_Range Length Error");
2712         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_out_range_length_error",
2713                 CTLFLAG_RD, &priv->pkstats.rx_out_range_length_error,
2714                 "RX Out Range Length Error");
2715         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_lt_64_bytes_packets", CTLFLAG_RD,
2716             &priv->pkstats.rx_lt_64_bytes_packets, "RX Lt 64 Bytes Packets");
2717         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_127_bytes_packets", CTLFLAG_RD,
2718             &priv->pkstats.rx_127_bytes_packets, "RX 127 bytes Packets");
2719         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_255_bytes_packets", CTLFLAG_RD,
2720             &priv->pkstats.rx_255_bytes_packets, "RX 255 bytes Packets");
2721         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_511_bytes_packets", CTLFLAG_RD,
2722             &priv->pkstats.rx_511_bytes_packets, "RX 511 bytes Packets");
2723         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_1023_bytes_packets", CTLFLAG_RD,
2724             &priv->pkstats.rx_1023_bytes_packets, "RX 1023 bytes Packets");
2725         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_1518_bytes_packets", CTLFLAG_RD,
2726             &priv->pkstats.rx_1518_bytes_packets, "RX 1518 bytes Packets");
2727         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_1522_bytes_packets", CTLFLAG_RD,
2728             &priv->pkstats.rx_1522_bytes_packets, "RX 1522 bytes Packets");
2729         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_1548_bytes_packets", CTLFLAG_RD,
2730             &priv->pkstats.rx_1548_bytes_packets, "RX 1548 bytes Packets");
2731         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_gt_1548_bytes_packets", CTLFLAG_RD,
2732             &priv->pkstats.rx_gt_1548_bytes_packets,
2733             "RX Greater Then 1548 bytes Packets");
2734
2735 struct mlx4_en_pkt_stats {
2736         unsigned long tx_packets;
2737         unsigned long tx_bytes;
2738         unsigned long tx_multicast_packets;
2739         unsigned long tx_broadcast_packets;
2740         unsigned long tx_errors;
2741         unsigned long tx_dropped;
2742         unsigned long tx_lt_64_bytes_packets;
2743         unsigned long tx_127_bytes_packets;
2744         unsigned long tx_255_bytes_packets;
2745         unsigned long tx_511_bytes_packets;
2746         unsigned long tx_1023_bytes_packets;
2747         unsigned long tx_1518_bytes_packets;
2748         unsigned long tx_1522_bytes_packets;
2749         unsigned long tx_1548_bytes_packets;
2750         unsigned long tx_gt_1548_bytes_packets;
2751         unsigned long rx_prio[NUM_PRIORITIES][NUM_PRIORITY_STATS];
2752         unsigned long tx_prio[NUM_PRIORITIES][NUM_PRIORITY_STATS];
2753 #define NUM_PKT_STATS           72
2754 };
2755
2756
2757         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_packets", CTLFLAG_RD,
2758             &priv->pkstats.tx_packets, "TX packets");
2759         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_bytes", CTLFLAG_RD,
2760             &priv->pkstats.tx_bytes, "TX Bytes");
2761         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_multicast_packets", CTLFLAG_RD,
2762             &priv->pkstats.tx_multicast_packets, "TX Multicast Packets");
2763         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_broadcast_packets", CTLFLAG_RD,
2764             &priv->pkstats.tx_broadcast_packets, "TX Broadcast Packets");
2765         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_errors", CTLFLAG_RD,
2766             &priv->pkstats.tx_errors, "TX Errors");
2767         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_dropped", CTLFLAG_RD,
2768             &priv->pkstats.tx_dropped, "TX Dropped");
2769         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_lt_64_bytes_packets", CTLFLAG_RD,
2770             &priv->pkstats.tx_lt_64_bytes_packets, "TX Less Then 64 Bytes Packets");
2771         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_127_bytes_packets", CTLFLAG_RD,
2772             &priv->pkstats.tx_127_bytes_packets, "TX 127 Bytes Packets");
2773         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_255_bytes_packets", CTLFLAG_RD,
2774             &priv->pkstats.tx_255_bytes_packets, "TX 255 Bytes Packets");
2775         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_511_bytes_packets", CTLFLAG_RD,
2776             &priv->pkstats.tx_511_bytes_packets, "TX 511 Bytes Packets");
2777         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_1023_bytes_packets", CTLFLAG_RD,
2778             &priv->pkstats.tx_1023_bytes_packets, "TX 1023 Bytes Packets");
2779         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_1518_bytes_packets", CTLFLAG_RD,
2780             &priv->pkstats.tx_1518_bytes_packets, "TX 1518 Bytes Packets");
2781         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_1522_bytes_packets", CTLFLAG_RD,
2782             &priv->pkstats.tx_1522_bytes_packets, "TX 1522 Bytes Packets");
2783         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_1548_bytes_packets", CTLFLAG_RD,
2784             &priv->pkstats.tx_1548_bytes_packets, "TX 1548 Bytes Packets");
2785         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_gt_1548_bytes_packets", CTLFLAG_RD,
2786             &priv->pkstats.tx_gt_1548_bytes_packets,
2787             "TX Greater Then 1548 Bytes Packets");
2788
2789
2790
2791         for (i = 0; i < priv->tx_ring_num; i++) {
2792                 tx_ring = priv->tx_ring[i];
2793                 snprintf(namebuf, sizeof(namebuf), "tx_ring%d", i);
2794                 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
2795                     CTLFLAG_RD, NULL, "TX Ring");
2796                 ring_list = SYSCTL_CHILDREN(ring_node);
2797                 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "packets",
2798                     CTLFLAG_RD, &tx_ring->packets, "TX packets");
2799                 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "bytes",
2800                     CTLFLAG_RD, &tx_ring->bytes, "TX bytes");
2801         }
2802
2803         for (i = 0; i < priv->rx_ring_num; i++) {
2804                 rx_ring = priv->rx_ring[i];
2805                 snprintf(namebuf, sizeof(namebuf), "rx_ring%d", i);
2806                 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
2807                     CTLFLAG_RD, NULL, "RX Ring");
2808                 ring_list = SYSCTL_CHILDREN(ring_node);
2809                 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "packets",
2810                     CTLFLAG_RD, &rx_ring->packets, "RX packets");
2811                 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "bytes",
2812                     CTLFLAG_RD, &rx_ring->bytes, "RX bytes");
2813                 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "error",
2814                     CTLFLAG_RD, &rx_ring->errors, "RX soft errors");
2815         }
2816 }