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 static int mlx4_en_unit;
  58
  59 #ifdef CONFIG_NET_RX_BUSY_POLL
  60 /* must be called with local_bh_disable()d */
  61 static int mlx4_en_low_latency_recv(struct napi_struct *napi)
  62 {
  63         struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
  64         struct net_device *dev = cq->dev;
  65         struct mlx4_en_priv *priv = netdev_priv(dev);
  66         struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring];
  67         int done;
  68
  69         if (!priv->port_up)
  70                 return LL_FLUSH_FAILED;
  71
  72         if (!mlx4_en_cq_lock_poll(cq))
  73                 return LL_FLUSH_BUSY;
  74
  75         done = mlx4_en_process_rx_cq(dev, cq, 4);
  76 #ifdef LL_EXTENDED_STATS
  77         if (done)
  78                 rx_ring->cleaned += done;
  79         else
  80                 rx_ring->misses++;
  81 #endif
  82
  83         mlx4_en_cq_unlock_poll(cq);
  84
  85         return done;
  86 }
  87 #endif  /* CONFIG_NET_RX_BUSY_POLL */
  88
  89 #ifdef CONFIG_RFS_ACCEL
  90
  91 struct mlx4_en_filter {
  92         struct list_head next;
  93         struct work_struct work;
  94
  95         u8     ip_proto;
  96         __be32 src_ip;
  97         __be32 dst_ip;
  98         __be16 src_port;
  99         __be16 dst_port;
 100
 101         int rxq_index;
 102         struct mlx4_en_priv *priv;
 103         u32 flow_id;                    /* RFS infrastructure id */
 104         int id;                         /* mlx4_en driver id */
 105         u64 reg_id;                     /* Flow steering API id */
 106         u8 activated;                   /* Used to prevent expiry before filter
 107                                          * is attached
 108                                          */
 109         struct hlist_node filter_chain;
 110 };
 111
 112 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 113
 114 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 115 {
 116         switch (ip_proto) {
 117         case IPPROTO_UDP:
 118                 return MLX4_NET_TRANS_RULE_ID_UDP;
 119         case IPPROTO_TCP:
 120                 return MLX4_NET_TRANS_RULE_ID_TCP;
 121         default:
 122                 return -EPROTONOSUPPORT;
 123         }
 124 };
 125
 126 static void mlx4_en_filter_work(struct work_struct *work)
 127 {
 128         struct mlx4_en_filter *filter = container_of(work,
 129                                                      struct mlx4_en_filter,
 130                                                      work);
 131         struct mlx4_en_priv *priv = filter->priv;
 132         struct mlx4_spec_list spec_tcp_udp = {
 133                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 134                 {
 135                         .tcp_udp = {
 136                                 .dst_port = filter->dst_port,
 137                                 .dst_port_msk = (__force __be16)-1,
 138                                 .src_port = filter->src_port,
 139                                 .src_port_msk = (__force __be16)-1,
 140                         },
 141                 },
 142         };
 143         struct mlx4_spec_list spec_ip = {
 144                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 145                 {
 146                         .ipv4 = {
 147                                 .dst_ip = filter->dst_ip,
 148                                 .dst_ip_msk = (__force __be32)-1,
 149                                 .src_ip = filter->src_ip,
 150                                 .src_ip_msk = (__force __be32)-1,
 151                         },
 152                 },
 153         };
 154         struct mlx4_spec_list spec_eth = {
 155                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 156         };
 157         struct mlx4_net_trans_rule rule = {
 158                 .list = LIST_HEAD_INIT(rule.list),
 159                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 160                 .exclusive = 1,
 161                 .allow_loopback = 1,
 162                 .promisc_mode = MLX4_FS_REGULAR,
 163                 .port = priv->port,
 164                 .priority = MLX4_DOMAIN_RFS,
 165         };
 166         int rc;
 167         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 168
 169         if (spec_tcp_udp.id < 0) {
 170                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 171                         filter->ip_proto);
 172                 goto ignore;
 173         }
 174         list_add_tail(&spec_eth.list, &rule.list);
 175         list_add_tail(&spec_ip.list, &rule.list);
 176         list_add_tail(&spec_tcp_udp.list, &rule.list);
 177
 178         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 179         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 180         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 181
 182         filter->activated = 0;
 183
 184         if (filter->reg_id) {
 185                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 186                 if (rc && rc != -ENOENT)
 187                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 188         }
 189
 190         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 191         if (rc)
 192                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 193
 194 ignore:
 195         mlx4_en_filter_rfs_expire(priv);
 196
 197         filter->activated = 1;
 198 }
 199
 200 static inline struct hlist_head *
 201 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 202                    __be16 src_port, __be16 dst_port)
 203 {
 204         unsigned long l;
 205         int bucket_idx;
 206
 207         l = (__force unsigned long)src_port |
 208             ((__force unsigned long)dst_port << 2);
 209         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 210
 211         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 212
 213         return &priv->filter_hash[bucket_idx];
 214 }
 215
 216 static struct mlx4_en_filter *
 217 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 218                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 219                      __be16 dst_port, u32 flow_id)
 220 {
 221         struct mlx4_en_filter *filter = NULL;
 222
 223         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 224         if (!filter)
 225                 return NULL;
 226
 227         filter->priv = priv;
 228         filter->rxq_index = rxq_index;
 229         INIT_WORK(&filter->work, mlx4_en_filter_work);
 230
 231         filter->src_ip = src_ip;
 232         filter->dst_ip = dst_ip;
 233         filter->ip_proto = ip_proto;
 234         filter->src_port = src_port;
 235         filter->dst_port = dst_port;
 236
 237         filter->flow_id = flow_id;
 238
 239         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 240
 241         list_add_tail(&filter->next, &priv->filters);
 242         hlist_add_head(&filter->filter_chain,
 243                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 244                                           dst_port));
 245
 246         return filter;
 247 }
 248
 249 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 250 {
 251         struct mlx4_en_priv *priv = filter->priv;
 252         int rc;
 253
 254         list_del(&filter->next);
 255
 256         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 257         if (rc && rc != -ENOENT)
 258                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 259
 260         kfree(filter);
 261 }
 262
 263 static inline struct mlx4_en_filter *
 264 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 265                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 266 {
 267         struct hlist_node *elem;
 268         struct mlx4_en_filter *filter;
 269         struct mlx4_en_filter *ret = NULL;
 270
 271         hlist_for_each_entry(filter, elem,
 272                              filter_hash_bucket(priv, src_ip, dst_ip,
 273                                                 src_port, dst_port),
 274                              filter_chain) {
 275                 if (filter->src_ip == src_ip &&
 276                     filter->dst_ip == dst_ip &&
 277                     filter->ip_proto == ip_proto &&
 278                     filter->src_port == src_port &&
 279                     filter->dst_port == dst_port) {
 280                         ret = filter;
 281                         break;
 282                 }
 283         }
 284
 285         return ret;
 286 }
 287
 288 static int
 289 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 290                    u16 rxq_index, u32 flow_id)
 291 {
 292         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 293         struct mlx4_en_filter *filter;
 294         const struct iphdr *ip;
 295         const __be16 *ports;
 296         u8 ip_proto;
 297         __be32 src_ip;
 298         __be32 dst_ip;
 299         __be16 src_port;
 300         __be16 dst_port;
 301         int nhoff = skb_network_offset(skb);
 302         int ret = 0;
 303
 304         if (skb->protocol != htons(ETH_P_IP))
 305                 return -EPROTONOSUPPORT;
 306
 307         ip = (const struct iphdr *)(skb->data + nhoff);
 308         if (ip_is_fragment(ip))
 309                 return -EPROTONOSUPPORT;
 310
 311         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 312                 return -EPROTONOSUPPORT;
 313         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 314
 315         ip_proto = ip->protocol;
 316         src_ip = ip->saddr;
 317         dst_ip = ip->daddr;
 318         src_port = ports[0];
 319         dst_port = ports[1];
 320
 321         spin_lock_bh(&priv->filters_lock);
 322         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 323                                      src_port, dst_port);
 324         if (filter) {
 325                 if (filter->rxq_index == rxq_index)
 326                         goto out;
 327
 328                 filter->rxq_index = rxq_index;
 329         } else {
 330                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 331                                               src_ip, dst_ip, ip_proto,
 332                                               src_port, dst_port, flow_id);
 333                 if (!filter) {
 334                         ret = -ENOMEM;
 335                         goto err;
 336                 }
 337         }
 338
 339         queue_work(priv->mdev->workqueue, &filter->work);
 340
 341 out:
 342         ret = filter->id;
 343 err:
 344         spin_unlock_bh(&priv->filters_lock);
 345
 346         return ret;
 347 }
 348
 349 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv,
 350                              struct mlx4_en_rx_ring *rx_ring)
 351 {
 352         struct mlx4_en_filter *filter, *tmp;
 353         LIST_HEAD(del_list);
 354
 355         spin_lock_bh(&priv->filters_lock);
 356         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 357                 list_move(&filter->next, &del_list);
 358                 hlist_del(&filter->filter_chain);
 359         }
 360         spin_unlock_bh(&priv->filters_lock);
 361
 362         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 363                 cancel_work_sync(&filter->work);
 364                 mlx4_en_filter_free(filter);
 365         }
 366 }
 367
 368 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 369 {
 370         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 371         LIST_HEAD(del_list);
 372         int i = 0;
 373
 374         spin_lock_bh(&priv->filters_lock);
 375         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 376                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 377                         break;
 378
 379                 if (filter->activated &&
 380                     !work_pending(&filter->work) &&
 381                     rps_may_expire_flow(priv->dev,
 382                                         filter->rxq_index, filter->flow_id,
 383                                         filter->id)) {
 384                         list_move(&filter->next, &del_list);
 385                         hlist_del(&filter->filter_chain);
 386                 } else
 387                         last_filter = filter;
 388
 389                 i++;
 390         }
 391
 392         if (last_filter && (&last_filter->next != priv->filters.next))
 393                 list_move(&priv->filters, &last_filter->next);
 394
 395         spin_unlock_bh(&priv->filters_lock);
 396
 397         list_for_each_entry_safe(filter, tmp, &del_list, next)
 398                 mlx4_en_filter_free(filter);
 399 }
 400 #endif
 401
 402 static void mlx4_en_vlan_rx_add_vid(void *arg, struct net_device *dev, u16 vid)
 403 {
 404         struct mlx4_en_priv *priv = netdev_priv(dev);
 405         struct mlx4_en_dev *mdev = priv->mdev;
 406         int err;
 407         int idx;
 408
 409         if (arg != priv)
 410                 return;
 411
 412         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 413
 414         set_bit(vid, priv->active_vlans);
 415
 416         /* Add VID to port VLAN filter */
 417         mutex_lock(&mdev->state_lock);
 418         if (mdev->device_up && priv->port_up) {
 419                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 420                 if (err)
 421                         en_err(priv, "Failed configuring VLAN filter\n");
 422         }
 423         if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
 424                 en_dbg(HW, priv, "failed adding vlan %d\n", vid);
 425         mutex_unlock(&mdev->state_lock);
 426
 427 }
 428
 429 static void mlx4_en_vlan_rx_kill_vid(void *arg, struct net_device *dev, u16 vid)
 430 {
 431         struct mlx4_en_priv *priv = netdev_priv(dev);
 432         struct mlx4_en_dev *mdev = priv->mdev;
 433         int err;
 434
 435         if (arg != priv)
 436                 return;
 437
 438         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 439
 440         clear_bit(vid, priv->active_vlans);
 441
 442         /* Remove VID from port VLAN filter */
 443         mutex_lock(&mdev->state_lock);
 444         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 445
 446         if (mdev->device_up && priv->port_up) {
 447                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 448                 if (err)
 449                         en_err(priv, "Failed configuring VLAN filter\n");
 450         }
 451         mutex_unlock(&mdev->state_lock);
 452
 453 }
 454
 455 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 456                                 unsigned char *mac, int *qpn, u64 *reg_id)
 457 {
 458         struct mlx4_en_dev *mdev = priv->mdev;
 459         struct mlx4_dev *dev = mdev->dev;
 460         int err;
 461
 462         switch (dev->caps.steering_mode) {
 463         case MLX4_STEERING_MODE_B0: {
 464                 struct mlx4_qp qp;
 465                 u8 gid[16] = {0};
 466
 467                 qp.qpn = *qpn;
 468                 memcpy(&gid[10], mac, ETH_ALEN);
 469                 gid[5] = priv->port;
 470
 471                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 472                 break;
 473         }
 474         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 475                 struct mlx4_spec_list spec_eth = { {NULL} };
 476                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 477
 478                 struct mlx4_net_trans_rule rule = {
 479                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 480                         .exclusive = 0,
 481                         .allow_loopback = 1,
 482                         .promisc_mode = MLX4_FS_REGULAR,
 483                         .priority = MLX4_DOMAIN_NIC,
 484                 };
 485
 486                 rule.port = priv->port;
 487                 rule.qpn = *qpn;
 488                 INIT_LIST_HEAD(&rule.list);
 489
 490                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 491                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 492                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 493                 list_add_tail(&spec_eth.list, &rule.list);
 494
 495                 err = mlx4_flow_attach(dev, &rule, reg_id);
 496                 break;
 497         }
 498         default:
 499                 return -EINVAL;
 500         }
 501         if (err)
 502                 en_warn(priv, "Failed Attaching Unicast\n");
 503
 504         return err;
 505 }
 506
 507 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 508                                      unsigned char *mac, int qpn, u64 reg_id)
 509 {
 510         struct mlx4_en_dev *mdev = priv->mdev;
 511         struct mlx4_dev *dev = mdev->dev;
 512
 513         switch (dev->caps.steering_mode) {
 514         case MLX4_STEERING_MODE_B0: {
 515                 struct mlx4_qp qp;
 516                 u8 gid[16] = {0};
 517
 518                 qp.qpn = qpn;
 519                 memcpy(&gid[10], mac, ETH_ALEN);
 520                 gid[5] = priv->port;
 521
 522                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 523                 break;
 524         }
 525         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 526                 mlx4_flow_detach(dev, reg_id);
 527                 break;
 528         }
 529         default:
 530                 en_err(priv, "Invalid steering mode.\n");
 531         }
 532 }
 533
 534 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 535 {
 536         struct mlx4_en_dev *mdev = priv->mdev;
 537         struct mlx4_dev *dev = mdev->dev;
 538         struct mlx4_mac_entry *entry;
 539         int index = 0;
 540         int err = 0;
 541         u64 reg_id;
 542         int *qpn = &priv->base_qpn;
 543         u64 mac = mlx4_mac_to_u64(IF_LLADDR(priv->dev));
 544
 545         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 546                IF_LLADDR(priv->dev));
 547         index = mlx4_register_mac(dev, priv->port, mac);
 548         if (index < 0) {
 549                 err = index;
 550                 en_err(priv, "Failed adding MAC: %pM\n",
 551                        IF_LLADDR(priv->dev));
 552                 return err;
 553         }
 554
 555         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 556                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 557                 *qpn = base_qpn + index;
 558                 return 0;
 559         }
 560
 561         err = mlx4_qp_reserve_range(dev, 1, 1, qpn, 0);
 562         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 563         if (err) {
 564                 en_err(priv, "Failed to reserve qp for mac registration\n");
 565                 goto qp_err;
 566         }
 567
 568         err = mlx4_en_uc_steer_add(priv, IF_LLADDR(priv->dev), qpn, &reg_id);
 569         if (err)
 570                 goto steer_err;
 571
 572         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
 573         if (!entry) {
 574                 err = -ENOMEM;
 575                 goto alloc_err;
 576         }
 577         memcpy(entry->mac, IF_LLADDR(priv->dev), sizeof(entry->mac));
 578         entry->reg_id = reg_id;
 579
 580         hlist_add_head(&entry->hlist,
 581                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
 582
 583         return 0;
 584
 585 alloc_err:
 586         mlx4_en_uc_steer_release(priv, IF_LLADDR(priv->dev), *qpn, reg_id);
 587
 588 steer_err:
 589         mlx4_qp_release_range(dev, *qpn, 1);
 590
 591 qp_err:
 592         mlx4_unregister_mac(dev, priv->port, mac);
 593         return err;
 594 }
 595
 596 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 597 {
 598         struct mlx4_en_dev *mdev = priv->mdev;
 599         struct mlx4_dev *dev = mdev->dev;
 600         int qpn = priv->base_qpn;
 601         u64 mac;
 602
 603         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 604                 mac = mlx4_mac_to_u64(IF_LLADDR(priv->dev));
 605                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 606                        IF_LLADDR(priv->dev));
 607                 mlx4_unregister_mac(dev, priv->port, mac);
 608         } else {
 609                 struct mlx4_mac_entry *entry;
 610                 struct hlist_node *n, *tmp;
 611                 struct hlist_head *bucket;
 612                 unsigned int i;
 613
 614                 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
 615                         bucket = &priv->mac_hash[i];
 616                         hlist_for_each_entry_safe(entry, n, tmp, bucket, hlist) {
 617                                 mac = mlx4_mac_to_u64(entry->mac);
 618                                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 619                                        entry->mac);
 620                                 mlx4_en_uc_steer_release(priv, entry->mac,
 621                                                          qpn, entry->reg_id);
 622
 623                                 mlx4_unregister_mac(dev, priv->port, mac);
 624                                 hlist_del(&entry->hlist);
 625                                 kfree(entry);
 626                         }
 627                 }
 628
 629                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 630                        priv->port, qpn);
 631                 mlx4_qp_release_range(dev, qpn, 1);
 632                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 633         }
 634 }
 635
 636 static void mlx4_en_clear_list(struct net_device *dev)
 637 {
 638         struct mlx4_en_priv *priv = netdev_priv(dev);
 639         struct mlx4_en_mc_list *tmp, *mc_to_del;
 640
 641         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 642                 list_del(&mc_to_del->list);
 643                 kfree(mc_to_del);
 644         }
 645 }
 646
 647 static void mlx4_en_cache_mclist(struct net_device *dev)
 648 {
 649         struct ifmultiaddr *ifma;
 650         struct mlx4_en_mc_list *tmp;
 651         struct mlx4_en_priv *priv = netdev_priv(dev);
 652
 653         if_maddr_rlock(dev);
 654         TAILQ_FOREACH(ifma, &dev->if_multiaddrs, ifma_link) {
 655                 if (ifma->ifma_addr->sa_family != AF_LINK)
 656                         continue;
 657                 if (((struct sockaddr_dl *)ifma->ifma_addr)->sdl_alen !=
 658                                 ETHER_ADDR_LEN)
 659                         continue;
 660                 /* Make sure the list didn't grow. */
 661                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 662                 if (tmp == NULL) {
 663                         en_err(priv, "Failed to allocate multicast list\n");
 664                         break;
 665                 }
 666                 memcpy(tmp->addr,
 667                         LLADDR((struct sockaddr_dl *)ifma->ifma_addr), ETH_ALEN);
 668                 list_add_tail(&tmp->list, &priv->mc_list);
 669         }
 670         if_maddr_runlock(dev);
 671 }
 672
 673 static void update_mclist_flags(struct mlx4_en_priv *priv,
 674                                 struct list_head *dst,
 675                                 struct list_head *src)
 676 {
 677         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 678         bool found;
 679
 680         /* Find all the entries that should be removed from dst,
 681          * These are the entries that are not found in src
 682          */
 683         list_for_each_entry(dst_tmp, dst, list) {
 684                 found = false;
 685                 list_for_each_entry(src_tmp, src, list) {
 686                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 687                                 found = true;
 688                                 break;
 689                         }
 690                 }
 691                 if (!found)
 692                         dst_tmp->action = MCLIST_REM;
 693         }
 694
 695         /* Add entries that exist in src but not in dst
 696          * mark them as need to add
 697          */
 698         list_for_each_entry(src_tmp, src, list) {
 699                 found = false;
 700                 list_for_each_entry(dst_tmp, dst, list) {
 701                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 702                                 dst_tmp->action = MCLIST_NONE;
 703                                 found = true;
 704                                 break;
 705                         }
 706                 }
 707                 if (!found) {
 708                         new_mc = kmalloc(sizeof(struct mlx4_en_mc_list),
 709                                          GFP_KERNEL);
 710                         if (!new_mc) {
 711                                 en_err(priv, "Failed to allocate current multicast list\n");
 712                                 return;
 713                         }
 714                         memcpy(new_mc, src_tmp,
 715                                sizeof(struct mlx4_en_mc_list));
 716                         new_mc->action = MCLIST_ADD;
 717                         list_add_tail(&new_mc->list, dst);
 718                 }
 719         }
 720 }
 721
 722 static void mlx4_en_set_rx_mode(struct net_device *dev)
 723 {
 724         struct mlx4_en_priv *priv = netdev_priv(dev);
 725
 726         if (!priv->port_up)
 727                 return;
 728
 729         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 730 }
 731
 732 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 733                                      struct mlx4_en_dev *mdev)
 734 {
 735         int err = 0;
 736         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 737                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 738
 739                 /* Enable promiscouos mode */
 740                 switch (mdev->dev->caps.steering_mode) {
 741                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 742                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 743                                                           priv->port,
 744                                                           priv->base_qpn,
 745                                                           MLX4_FS_ALL_DEFAULT);
 746                         if (err)
 747                                 en_err(priv, "Failed enabling promiscuous mode\n");
 748                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 749                         break;
 750
 751                 case MLX4_STEERING_MODE_B0:
 752                         err = mlx4_unicast_promisc_add(mdev->dev,
 753                                                        priv->base_qpn,
 754                                                        priv->port);
 755                         if (err)
 756                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 757
 758                         /* Add the default qp number as multicast
 759                          * promisc
 760                          */
 761                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 762                                 err = mlx4_multicast_promisc_add(mdev->dev,
 763                                                                  priv->base_qpn,
 764                                                                  priv->port);
 765                                 if (err)
 766                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 767                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 768                         }
 769                         break;
 770
 771                 case MLX4_STEERING_MODE_A0:
 772                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 773                                                      priv->port,
 774                                                      priv->base_qpn,
 775                                                      1);
 776                         if (err)
 777                                 en_err(priv, "Failed enabling promiscuous mode\n");
 778                         break;
 779                 }
 780
 781                 /* Disable port multicast filter (unconditionally) */
 782                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 783                                           0, MLX4_MCAST_DISABLE);
 784                 if (err)
 785                         en_err(priv, "Failed disabling multicast filter\n");
 786         }
 787 }
 788
 789 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 790                                        struct mlx4_en_dev *mdev)
 791 {
 792         int err = 0;
 793
 794         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 795
 796         /* Disable promiscouos mode */
 797         switch (mdev->dev->caps.steering_mode) {
 798         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 799                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 800                                                      priv->port,
 801                                                      MLX4_FS_ALL_DEFAULT);
 802                 if (err)
 803                         en_err(priv, "Failed disabling promiscuous mode\n");
 804                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 805                 break;
 806
 807         case MLX4_STEERING_MODE_B0:
 808                 err = mlx4_unicast_promisc_remove(mdev->dev,
 809                                                   priv->base_qpn,
 810                                                   priv->port);
 811                 if (err)
 812                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 813                 /* Disable Multicast promisc */
 814                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 815                         err = mlx4_multicast_promisc_remove(mdev->dev,
 816                                                             priv->base_qpn,
 817                                                             priv->port);
 818                         if (err)
 819                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 820                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 821                 }
 822                 break;
 823
 824         case MLX4_STEERING_MODE_A0:
 825                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 826                                              priv->port,
 827                                              priv->base_qpn, 0);
 828                 if (err)
 829                         en_err(priv, "Failed disabling promiscuous mode\n");
 830                 break;
 831         }
 832 }
 833
 834 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 835                                  struct net_device *dev,
 836                                  struct mlx4_en_dev *mdev)
 837 {
 838         struct mlx4_en_mc_list *mclist, *tmp;
 839         u8 mc_list[16] = {0};
 840         int err = 0;
 841         u64 mcast_addr = 0;
 842
 843
 844         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 845         if (dev->if_flags & IFF_ALLMULTI) {
 846                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 847                                           0, MLX4_MCAST_DISABLE);
 848                 if (err)
 849                         en_err(priv, "Failed disabling multicast filter\n");
 850
 851                 /* Add the default qp number as multicast promisc */
 852                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 853                         switch (mdev->dev->caps.steering_mode) {
 854                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 855                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
 856                                                                   priv->port,
 857                                                                   priv->base_qpn,
 858                                                                   MLX4_FS_MC_DEFAULT);
 859                                 break;
 860
 861                         case MLX4_STEERING_MODE_B0:
 862                                 err = mlx4_multicast_promisc_add(mdev->dev,
 863                                                                  priv->base_qpn,
 864                                                                  priv->port);
 865                                 break;
 866
 867                         case MLX4_STEERING_MODE_A0:
 868                                 break;
 869                         }
 870                         if (err)
 871                                 en_err(priv, "Failed entering multicast promisc mode\n");
 872                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 873                 }
 874         } else {
 875                 /* Disable Multicast promisc */
 876                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 877                         switch (mdev->dev->caps.steering_mode) {
 878                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 879                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 880                                                                      priv->port,
 881                                                                      MLX4_FS_MC_DEFAULT);
 882                                 break;
 883
 884                         case MLX4_STEERING_MODE_B0:
 885                                 err = mlx4_multicast_promisc_remove(mdev->dev,
 886                                                                     priv->base_qpn,
 887                                                                     priv->port);
 888                                 break;
 889
 890                         case MLX4_STEERING_MODE_A0:
 891                                 break;
 892                         }
 893                         if (err)
 894                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 895                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 896                 }
 897
 898                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 899                                           0, MLX4_MCAST_DISABLE);
 900                 if (err)
 901                         en_err(priv, "Failed disabling multicast filter\n");
 902
 903                 /* Flush mcast filter and init it with broadcast address */
 904                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
 905                                     1, MLX4_MCAST_CONFIG);
 906
 907                 /* Update multicast list - we cache all addresses so they won't
 908                  * change while HW is updated holding the command semaphor */
 909                 mlx4_en_cache_mclist(dev);
 910                 list_for_each_entry(mclist, &priv->mc_list, list) {
 911                         mcast_addr = mlx4_mac_to_u64(mclist->addr);
 912                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
 913                                         mcast_addr, 0, MLX4_MCAST_CONFIG);
 914                 }
 915                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 916                                           0, MLX4_MCAST_ENABLE);
 917                 if (err)
 918                         en_err(priv, "Failed enabling multicast filter\n");
 919
 920                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
 921                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
 922                         if (mclist->action == MCLIST_REM) {
 923                                 /* detach this address and delete from list */
 924                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
 925                                 mc_list[5] = priv->port;
 926                                 err = mlx4_multicast_detach(mdev->dev,
 927                                                             &priv->rss_map.indir_qp,
 928                                                             mc_list,
 929                                                             MLX4_PROT_ETH,
 930                                                             mclist->reg_id);
 931                                 if (err)
 932                                         en_err(priv, "Fail to detach multicast address\n");
 933
 934                                 /* remove from list */
 935                                 list_del(&mclist->list);
 936                                 kfree(mclist);
 937                         } else if (mclist->action == MCLIST_ADD) {
 938                                 /* attach the address */
 939                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
 940                                 /* needed for B0 steering support */
 941                                 mc_list[5] = priv->port;
 942                                 err = mlx4_multicast_attach(mdev->dev,
 943                                                             &priv->rss_map.indir_qp,
 944                                                             mc_list,
 945                                                             priv->port, 0,
 946                                                             MLX4_PROT_ETH,
 947                                                             &mclist->reg_id);
 948                                 if (err)
 949                                         en_err(priv, "Fail to attach multicast address\n");
 950
 951                         }
 952                 }
 953         }
 954 }
 955
 956 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
 957 {
 958         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
 959                                                  rx_mode_task);
 960         struct mlx4_en_dev *mdev = priv->mdev;
 961         struct net_device *dev = priv->dev;
 962
 963
 964         mutex_lock(&mdev->state_lock);
 965         if (!mdev->device_up) {
 966                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
 967                 goto out;
 968         }
 969         if (!priv->port_up) {
 970                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
 971                 goto out;
 972         }
 973         if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
 974                 if (priv->port_state.link_state) {
 975                         priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
 976                         /* update netif baudrate */
 977                         priv->dev->if_baudrate =
 978                             IF_Mbps(priv->port_state.link_speed);
 979                         /* Important note: the following call for if_link_state_change
 980                          * is needed for interface up scenario (start port, link state
 981                          * change) */
 982                         if_link_state_change(priv->dev, LINK_STATE_UP);
 983                         en_dbg(HW, priv, "Link Up\n");
 984                 }
 985         }
 986
 987         /* Promsicuous mode: disable all filters */
 988         if ((dev->if_flags & IFF_PROMISC) ||
 989             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
 990                 mlx4_en_set_promisc_mode(priv, mdev);
 991                 goto out;
 992         }
 993
 994         /* Not in promiscuous mode */
 995         if (priv->flags & MLX4_EN_FLAG_PROMISC)
 996                 mlx4_en_clear_promisc_mode(priv, mdev);
 997
 998         mlx4_en_do_multicast(priv, dev, mdev);
 999 out:
1000         mutex_unlock(&mdev->state_lock);
1001 }
1002
1003 #ifdef CONFIG_NET_POLL_CONTROLLER
1004 static void mlx4_en_netpoll(struct net_device *dev)
1005 {
1006         struct mlx4_en_priv *priv = netdev_priv(dev);
1007         struct mlx4_en_cq *cq;
1008         unsigned long flags;
1009         int i;
1010
1011         for (i = 0; i < priv->rx_ring_num; i++) {
1012                 cq = priv->rx_cq[i];
1013                 spin_lock_irqsave(&cq->lock, flags);
1014                 napi_synchronize(&cq->napi);
1015                 mlx4_en_process_rx_cq(dev, cq, 0);
1016                 spin_unlock_irqrestore(&cq->lock, flags);
1017         }
1018 }
1019 #endif
1020
1021 static void mlx4_en_watchdog_timeout(void *arg)
1022 {
1023         struct mlx4_en_priv *priv = arg;
1024         struct mlx4_en_dev *mdev = priv->mdev;
1025
1026         en_dbg(DRV, priv, "Scheduling watchdog\n");
1027         queue_work(mdev->workqueue, &priv->watchdog_task);
1028         if (priv->port_up)
1029                 callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
1030                                 mlx4_en_watchdog_timeout, priv);
1031 }
1032
1033
1034
1035 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1036 {
1037         struct mlx4_en_cq *cq;
1038         int i;
1039
1040         /* If we haven't received a specific coalescing setting
1041          * (module param), we set the moderation parameters as follows:
1042          * - moder_cnt is set to the number of mtu sized packets to
1043          *   satisfy our coelsing target.
1044          * - moder_time is set to a fixed value.
1045          */
1046         priv->rx_frames = MLX4_EN_RX_COAL_TARGET / priv->dev->if_mtu + 1;
1047         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1048         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1049         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1050         en_dbg(INTR, priv, "Default coalesing params for mtu: %u - "
1051                "rx_frames:%d rx_usecs:%d\n",
1052                (unsigned)priv->dev->if_mtu, priv->rx_frames, priv->rx_usecs);
1053
1054         /* Setup cq moderation params */
1055         for (i = 0; i < priv->rx_ring_num; i++) {
1056                 cq = priv->rx_cq[i];
1057                 cq->moder_cnt = priv->rx_frames;
1058                 cq->moder_time = priv->rx_usecs;
1059                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1060                 priv->last_moder_packets[i] = 0;
1061                 priv->last_moder_bytes[i] = 0;
1062         }
1063
1064         for (i = 0; i < priv->tx_ring_num; i++) {
1065                 cq = priv->tx_cq[i];
1066                 cq->moder_cnt = priv->tx_frames;
1067                 cq->moder_time = priv->tx_usecs;
1068         }
1069
1070         /* Reset auto-moderation params */
1071         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1072         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1073         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1074         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1075         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1076         priv->adaptive_rx_coal = 1;
1077         priv->last_moder_jiffies = 0;
1078         priv->last_moder_tx_packets = 0;
1079 }
1080
1081 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1082 {
1083         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1084         struct mlx4_en_cq *cq;
1085         unsigned long packets;
1086         unsigned long rate;
1087         unsigned long avg_pkt_size;
1088         unsigned long rx_packets;
1089         unsigned long rx_bytes;
1090         unsigned long rx_pkt_diff;
1091         int moder_time;
1092         int ring, err;
1093
1094         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1095                 return;
1096
1097         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1098                 spin_lock(&priv->stats_lock);
1099                 rx_packets = priv->rx_ring[ring]->packets;
1100                 rx_bytes = priv->rx_ring[ring]->bytes;
1101                 spin_unlock(&priv->stats_lock);
1102
1103                 rx_pkt_diff = ((unsigned long) (rx_packets -
1104                                 priv->last_moder_packets[ring]));
1105                 packets = rx_pkt_diff;
1106                 rate = packets * HZ / period;
1107                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1108                                 priv->last_moder_bytes[ring])) / packets : 0;
1109
1110                 /* Apply auto-moderation only when packet rate
1111                  * exceeds a rate that it matters */
1112                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1113                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1114                         if (rate < priv->pkt_rate_low)
1115                                 moder_time = priv->rx_usecs_low;
1116                         else if (rate > priv->pkt_rate_high)
1117                                 moder_time = priv->rx_usecs_high;
1118                         else
1119                                 moder_time = (rate - priv->pkt_rate_low) *
1120                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1121                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
1122                                         priv->rx_usecs_low;
1123                 } else {
1124                         moder_time = priv->rx_usecs_low;
1125                 }
1126
1127                 if (moder_time != priv->last_moder_time[ring]) {
1128                         priv->last_moder_time[ring] = moder_time;
1129                         cq = priv->rx_cq[ring];
1130                         cq->moder_time = moder_time;
1131                         err = mlx4_en_set_cq_moder(priv, cq);
1132                         if (err)
1133                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1134                                        ring);
1135                 }
1136                 priv->last_moder_packets[ring] = rx_packets;
1137                 priv->last_moder_bytes[ring] = rx_bytes;
1138         }
1139
1140         priv->last_moder_jiffies = jiffies;
1141 }
1142
1143 static void mlx4_en_do_get_stats(struct work_struct *work)
1144 {
1145         struct delayed_work *delay = to_delayed_work(work);
1146         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1147                                                  stats_task);
1148         struct mlx4_en_dev *mdev = priv->mdev;
1149         int err;
1150
1151         mutex_lock(&mdev->state_lock);
1152         if (mdev->device_up) {
1153                 if (priv->port_up) {
1154                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1155                         if (err)
1156                                 en_dbg(HW, priv, "Could not update stats\n");
1157
1158                         mlx4_en_auto_moderation(priv);
1159                 }
1160
1161                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1162         }
1163         mutex_unlock(&mdev->state_lock);
1164 }
1165
1166 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1167  * periodically
1168  */
1169 static void mlx4_en_service_task(struct work_struct *work)
1170 {
1171         struct delayed_work *delay = to_delayed_work(work);
1172         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1173                                                  service_task);
1174         struct mlx4_en_dev *mdev = priv->mdev;
1175
1176         mutex_lock(&mdev->state_lock);
1177         if (mdev->device_up) {
1178                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1179                                    SERVICE_TASK_DELAY);
1180         }
1181         mutex_unlock(&mdev->state_lock);
1182 }
1183
1184 static void mlx4_en_linkstate(struct work_struct *work)
1185 {
1186         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1187                                                  linkstate_task);
1188         struct mlx4_en_dev *mdev = priv->mdev;
1189         int linkstate = priv->link_state;
1190
1191         mutex_lock(&mdev->state_lock);
1192         /* If observable port state changed set carrier state and
1193          * report to system log */
1194         if (priv->last_link_state != linkstate) {
1195                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1196                         en_info(priv, "Link Down\n");
1197                         if_link_state_change(priv->dev, LINK_STATE_DOWN);
1198                         /* update netif baudrate */
1199                         priv->dev->if_baudrate = 0;
1200
1201                 /* make sure the port is up before notifying the OS.
1202                  * This is tricky since we get here on INIT_PORT and
1203                  * in such case we can't tell the OS the port is up.
1204                  * To solve this there is a call to if_link_state_change
1205                  * in set_rx_mode.
1206                  * */
1207                 } else if (priv->port_up && (linkstate == MLX4_DEV_EVENT_PORT_UP)){
1208                         if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
1209                                 en_info(priv, "Query port failed\n");
1210                         priv->dev->if_baudrate =
1211                             IF_Mbps(priv->port_state.link_speed);
1212                         en_info(priv, "Link Up\n");
1213                         if_link_state_change(priv->dev, LINK_STATE_UP);
1214                 }
1215         }
1216         priv->last_link_state = linkstate;
1217         mutex_unlock(&mdev->state_lock);
1218 }
1219
1220
1221 int mlx4_en_start_port(struct net_device *dev)
1222 {
1223         struct mlx4_en_priv *priv = netdev_priv(dev);
1224         struct mlx4_en_dev *mdev = priv->mdev;
1225         struct mlx4_en_cq *cq;
1226         struct mlx4_en_tx_ring *tx_ring;
1227         int rx_index = 0;
1228         int tx_index = 0;
1229         int err = 0;
1230         int i;
1231         int j;
1232         u8 mc_list[16] = {0};
1233
1234
1235         if (priv->port_up) {
1236                 en_dbg(DRV, priv, "start port called while port already up\n");
1237                 return 0;
1238         }
1239
1240         INIT_LIST_HEAD(&priv->mc_list);
1241         INIT_LIST_HEAD(&priv->curr_list);
1242         INIT_LIST_HEAD(&priv->ethtool_list);
1243
1244         /* Calculate Rx buf size */
1245         dev->if_mtu = min(dev->if_mtu, priv->max_mtu);
1246         mlx4_en_calc_rx_buf(dev);
1247         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_mb_size);
1248
1249         /* Configure rx cq's and rings */
1250         err = mlx4_en_activate_rx_rings(priv);
1251         if (err) {
1252                 en_err(priv, "Failed to activate RX rings\n");
1253                 return err;
1254         }
1255         for (i = 0; i < priv->rx_ring_num; i++) {
1256                 cq = priv->rx_cq[i];
1257
1258                 mlx4_en_cq_init_lock(cq);
1259                 err = mlx4_en_activate_cq(priv, cq, i);
1260                 if (err) {
1261                         en_err(priv, "Failed activating Rx CQ\n");
1262                         goto cq_err;
1263                 }
1264                 for (j = 0; j < cq->size; j++)
1265                         cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1266                 err = mlx4_en_set_cq_moder(priv, cq);
1267                 if (err) {
1268                         en_err(priv, "Failed setting cq moderation parameters");
1269                         mlx4_en_deactivate_cq(priv, cq);
1270                         goto cq_err;
1271                 }
1272                 mlx4_en_arm_cq(priv, cq);
1273                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1274                 ++rx_index;
1275         }
1276
1277         /* Set qp number */
1278         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1279         err = mlx4_en_get_qp(priv);
1280         if (err) {
1281                 en_err(priv, "Failed getting eth qp\n");
1282                 goto cq_err;
1283         }
1284         mdev->mac_removed[priv->port] = 0;
1285
1286         /* gets default allocated counter index from func cap */
1287         /* or sink counter index if no resources */
1288         priv->counter_index = mdev->dev->caps.def_counter_index[priv->port - 1];
1289
1290         en_dbg(DRV, priv, "%s: default counter index %d for port %d\n",
1291                __func__, priv->counter_index, priv->port);
1292
1293         err = mlx4_en_config_rss_steer(priv);
1294         if (err) {
1295                 en_err(priv, "Failed configuring rss steering\n");
1296                 goto mac_err;
1297         }
1298
1299         err = mlx4_en_create_drop_qp(priv);
1300         if (err)
1301                 goto rss_err;
1302
1303         /* Configure tx cq's and rings */
1304         for (i = 0; i < priv->tx_ring_num; i++) {
1305                 /* Configure cq */
1306                 cq = priv->tx_cq[i];
1307                 err = mlx4_en_activate_cq(priv, cq, i);
1308                 if (err) {
1309                         en_err(priv, "Failed activating Tx CQ\n");
1310                         goto tx_err;
1311                 }
1312                 err = mlx4_en_set_cq_moder(priv, cq);
1313                 if (err) {
1314                         en_err(priv, "Failed setting cq moderation parameters");
1315                         mlx4_en_deactivate_cq(priv, cq);
1316                         goto tx_err;
1317                 }
1318                 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1319                 cq->buf->wqe_index = cpu_to_be16(0xffff);
1320
1321                 /* Configure ring */
1322                 tx_ring = priv->tx_ring[i];
1323
1324                 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1325                                                i / priv->num_tx_rings_p_up);
1326                 if (err) {
1327                         en_err(priv, "Failed activating Tx ring %d\n", i);
1328                         mlx4_en_deactivate_cq(priv, cq);
1329                         goto tx_err;
1330                 }
1331
1332                 /* Arm CQ for TX completions */
1333                 mlx4_en_arm_cq(priv, cq);
1334
1335                 /* Set initial ownership of all Tx TXBBs to SW (1) */
1336                 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1337                         *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1338                 ++tx_index;
1339         }
1340
1341         /* Configure port */
1342         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1343                                     priv->rx_mb_size,
1344                                     priv->prof->tx_pause,
1345                                     priv->prof->tx_ppp,
1346                                     priv->prof->rx_pause,
1347                                     priv->prof->rx_ppp);
1348         if (err) {
1349                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1350                        priv->port, err);
1351                 goto tx_err;
1352         }
1353         /* Set default qp number */
1354         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1355         if (err) {
1356                 en_err(priv, "Failed setting default qp numbers\n");
1357                 goto tx_err;
1358         }
1359
1360         /* Init port */
1361         en_dbg(HW, priv, "Initializing port\n");
1362         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1363         if (err) {
1364                 en_err(priv, "Failed Initializing port\n");
1365                 goto tx_err;
1366         }
1367
1368         /* Attach rx QP to bradcast address */
1369         memset(&mc_list[10], 0xff, ETH_ALEN);
1370         mc_list[5] = priv->port; /* needed for B0 steering support */
1371         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1372                                   priv->port, 0, MLX4_PROT_ETH,
1373                                   &priv->broadcast_id))
1374                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1375
1376         /* Must redo promiscuous mode setup. */
1377         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1378
1379         /* Schedule multicast task to populate multicast list */
1380         queue_work(mdev->workqueue, &priv->rx_mode_task);
1381
1382         mlx4_set_stats_bitmap(mdev->dev, priv->stats_bitmap);
1383
1384         priv->port_up = true;
1385
1386         /* Enable the queues. */
1387         dev->if_drv_flags &= ~IFF_DRV_OACTIVE;
1388         dev->if_drv_flags |= IFF_DRV_RUNNING;
1389 #ifdef CONFIG_DEBUG_FS
1390         mlx4_en_create_debug_files(priv);
1391 #endif
1392         callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
1393                     mlx4_en_watchdog_timeout, priv);
1394
1395
1396         return 0;
1397
1398 tx_err:
1399         while (tx_index--) {
1400                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1401                 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1402         }
1403         mlx4_en_destroy_drop_qp(priv);
1404 rss_err:
1405         mlx4_en_release_rss_steer(priv);
1406 mac_err:
1407         mlx4_en_put_qp(priv);
1408 cq_err:
1409         while (rx_index--)
1410                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1411         for (i = 0; i < priv->rx_ring_num; i++)
1412                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1413
1414         return err; /* need to close devices */
1415 }
1416
1417
1418 void mlx4_en_stop_port(struct net_device *dev)
1419 {
1420         struct mlx4_en_priv *priv = netdev_priv(dev);
1421         struct mlx4_en_dev *mdev = priv->mdev;
1422         struct mlx4_en_mc_list *mclist, *tmp;
1423         int i;
1424         u8 mc_list[16] = {0};
1425
1426         if (!priv->port_up) {
1427                 en_dbg(DRV, priv, "stop port called while port already down\n");
1428                 return;
1429         }
1430
1431 #ifdef CONFIG_DEBUG_FS
1432         mlx4_en_delete_debug_files(priv);
1433 #endif
1434
1435         /* close port*/
1436         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1437
1438         /* Set port as not active */
1439         priv->port_up = false;
1440         if (priv->counter_index != 0xff) {
1441                 mlx4_counter_free(mdev->dev, priv->port, priv->counter_index);
1442                 priv->counter_index = 0xff;
1443         }
1444
1445         /* Promsicuous mode */
1446         if (mdev->dev->caps.steering_mode ==
1447             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1448                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1449                                  MLX4_EN_FLAG_MC_PROMISC);
1450                 mlx4_flow_steer_promisc_remove(mdev->dev,
1451                                                priv->port,
1452                                                MLX4_FS_ALL_DEFAULT);
1453                 mlx4_flow_steer_promisc_remove(mdev->dev,
1454                                                priv->port,
1455                                                MLX4_FS_MC_DEFAULT);
1456         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1457                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1458
1459                 /* Disable promiscouos mode */
1460                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1461                                             priv->port);
1462
1463                 /* Disable Multicast promisc */
1464                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1465                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1466                                                       priv->port);
1467                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1468                 }
1469         }
1470
1471         /* Detach All multicasts */
1472         memset(&mc_list[10], 0xff, ETH_ALEN);
1473         mc_list[5] = priv->port; /* needed for B0 steering support */
1474         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1475                               MLX4_PROT_ETH, priv->broadcast_id);
1476         list_for_each_entry(mclist, &priv->curr_list, list) {
1477                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1478                 mc_list[5] = priv->port;
1479                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1480                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1481         }
1482         mlx4_en_clear_list(dev);
1483         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1484                 list_del(&mclist->list);
1485                 kfree(mclist);
1486         }
1487
1488         /* Flush multicast filter */
1489         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1490         mlx4_en_destroy_drop_qp(priv);
1491
1492         /* Free TX Rings */
1493         for (i = 0; i < priv->tx_ring_num; i++) {
1494                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1495                 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1496         }
1497         msleep(10);
1498
1499         for (i = 0; i < priv->tx_ring_num; i++)
1500                 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1501
1502         /* Free RSS qps */
1503         mlx4_en_release_rss_steer(priv);
1504
1505         /* Unregister Mac address for the port */
1506         mlx4_en_put_qp(priv);
1507         mdev->mac_removed[priv->port] = 1;
1508
1509         /* Free RX Rings */
1510         for (i = 0; i < priv->rx_ring_num; i++) {
1511                 struct mlx4_en_cq *cq = priv->rx_cq[i];
1512                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1513                 mlx4_en_deactivate_cq(priv, cq);
1514         }
1515
1516         callout_stop(&priv->watchdog_timer);
1517
1518         dev->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1519 }
1520
1521 static void mlx4_en_restart(struct work_struct *work)
1522 {
1523         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1524                                                  watchdog_task);
1525         struct mlx4_en_dev *mdev = priv->mdev;
1526         struct net_device *dev = priv->dev;
1527         struct mlx4_en_tx_ring *ring;
1528         int i;
1529
1530
1531         if (priv->blocked == 0 || priv->port_up == 0)
1532                 return;
1533         for (i = 0; i < priv->tx_ring_num; i++) {
1534                 ring = priv->tx_ring[i];
1535                 if (ring->blocked &&
1536                                 ring->watchdog_time + MLX4_EN_WATCHDOG_TIMEOUT < ticks)
1537                         goto reset;
1538         }
1539         return;
1540
1541 reset:
1542         priv->port_stats.tx_timeout++;
1543         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1544
1545         mutex_lock(&mdev->state_lock);
1546         if (priv->port_up) {
1547                 mlx4_en_stop_port(dev);
1548                 //for (i = 0; i < priv->tx_ring_num; i++)
1549                 //        netdev_tx_reset_queue(priv->tx_ring[i]->tx_queue);
1550                 if (mlx4_en_start_port(dev))
1551                         en_err(priv, "Failed restarting port %d\n", priv->port);
1552         }
1553         mutex_unlock(&mdev->state_lock);
1554 }
1555
1556 static void mlx4_en_clear_stats(struct net_device *dev)
1557 {
1558         struct mlx4_en_priv *priv = netdev_priv(dev);
1559         struct mlx4_en_dev *mdev = priv->mdev;
1560         int i;
1561
1562         if (!mlx4_is_slave(mdev->dev))
1563                 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1564                         en_dbg(HW, priv, "Failed dumping statistics\n");
1565
1566         memset(&priv->pstats, 0, sizeof(priv->pstats));
1567         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1568         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1569         memset(&priv->vport_stats, 0, sizeof(priv->vport_stats));
1570
1571         for (i = 0; i < priv->tx_ring_num; i++) {
1572                 priv->tx_ring[i]->bytes = 0;
1573                 priv->tx_ring[i]->packets = 0;
1574                 priv->tx_ring[i]->tx_csum = 0;
1575                 priv->tx_ring[i]->oversized_packets = 0;
1576         }
1577         for (i = 0; i < priv->rx_ring_num; i++) {
1578                 priv->rx_ring[i]->bytes = 0;
1579                 priv->rx_ring[i]->packets = 0;
1580                 priv->rx_ring[i]->csum_ok = 0;
1581                 priv->rx_ring[i]->csum_none = 0;
1582         }
1583 }
1584
1585 static void mlx4_en_open(void* arg)
1586 {
1587
1588         struct mlx4_en_priv *priv;
1589         struct mlx4_en_dev *mdev;
1590         struct net_device *dev;
1591         int err = 0;
1592
1593         priv = arg;
1594         mdev = priv->mdev;
1595         dev = priv->dev;
1596
1597
1598         mutex_lock(&mdev->state_lock);
1599
1600         if (!mdev->device_up) {
1601                 en_err(priv, "Cannot open - device down/disabled\n");
1602                 goto out;
1603         }
1604
1605         /* Reset HW statistics and SW counters */
1606         mlx4_en_clear_stats(dev);
1607
1608         err = mlx4_en_start_port(dev);
1609         if (err)
1610                 en_err(priv, "Failed starting port:%d\n", priv->port);
1611
1612 out:
1613         mutex_unlock(&mdev->state_lock);
1614         return;
1615 }
1616
1617 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1618 {
1619         int i;
1620
1621 #ifdef CONFIG_RFS_ACCEL
1622         if (priv->dev->rx_cpu_rmap) {
1623                 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1624                 priv->dev->rx_cpu_rmap = NULL;
1625         }
1626 #endif
1627
1628         for (i = 0; i < priv->tx_ring_num; i++) {
1629                 if (priv->tx_ring && priv->tx_ring[i])
1630                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1631                 if (priv->tx_cq && priv->tx_cq[i])
1632                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1633         }
1634
1635         for (i = 0; i < priv->rx_ring_num; i++) {
1636                 if (priv->rx_ring[i])
1637                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1638                                 priv->prof->rx_ring_size, priv->stride);
1639                 if (priv->rx_cq[i])
1640                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1641         }
1642
1643         if (priv->stat_sysctl != NULL)
1644                 sysctl_ctx_free(&priv->stat_ctx);
1645 }
1646
1647 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1648 {
1649         struct mlx4_en_port_profile *prof = priv->prof;
1650         int i;
1651         int node = 0;
1652
1653         /* Create rx Rings */
1654         for (i = 0; i < priv->rx_ring_num; i++) {
1655                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
1656                                       prof->rx_ring_size, i, RX, node))
1657                         goto err;
1658
1659                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
1660                                            prof->rx_ring_size, node))
1661                         goto err;
1662         }
1663
1664         /* Create tx Rings */
1665         for (i = 0; i < priv->tx_ring_num; i++) {
1666                 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1667                                       prof->tx_ring_size, i, TX, node))
1668                         goto err;
1669
1670                 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
1671                                            prof->tx_ring_size, TXBB_SIZE, node, i))
1672                         goto err;
1673         }
1674
1675 #ifdef CONFIG_RFS_ACCEL
1676         priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->rx_ring_num);
1677         if (!priv->dev->rx_cpu_rmap)
1678                 goto err;
1679 #endif
1680         /* Re-create stat sysctls in case the number of rings changed. */
1681         mlx4_en_sysctl_stat(priv);
1682         return 0;
1683
1684 err:
1685         en_err(priv, "Failed to allocate NIC resources\n");
1686         for (i = 0; i < priv->rx_ring_num; i++) {
1687                 if (priv->rx_ring[i])
1688                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1689                                                 prof->rx_ring_size,
1690                                                 priv->stride);
1691                 if (priv->rx_cq[i])
1692                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1693         }
1694         for (i = 0; i < priv->tx_ring_num; i++) {
1695                 if (priv->tx_ring[i])
1696                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1697                 if (priv->tx_cq[i])
1698                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1699         }
1700         priv->port_up = false;
1701         return -ENOMEM;
1702 }
1703
1704 struct en_port_attribute {
1705         struct attribute attr;
1706         ssize_t (*show)(struct en_port *, struct en_port_attribute *, char *buf);
1707         ssize_t (*store)(struct en_port *, struct en_port_attribute *, char *buf, size_t count);
1708 };
1709
1710 #define PORT_ATTR_RO(_name) \
1711 struct en_port_attribute en_port_attr_##_name = __ATTR_RO(_name)
1712
1713 #define EN_PORT_ATTR(_name, _mode, _show, _store) \
1714 struct en_port_attribute en_port_attr_##_name = __ATTR(_name, _mode, _show, _store)
1715
1716 void mlx4_en_destroy_netdev(struct net_device *dev)
1717 {
1718         struct mlx4_en_priv *priv = netdev_priv(dev);
1719         struct mlx4_en_dev *mdev = priv->mdev;
1720
1721         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
1722
1723         if (priv->vlan_attach != NULL)
1724                 EVENTHANDLER_DEREGISTER(vlan_config, priv->vlan_attach);
1725         if (priv->vlan_detach != NULL)
1726                 EVENTHANDLER_DEREGISTER(vlan_unconfig, priv->vlan_detach);
1727
1728         /* Unregister device - this will close the port if it was up */
1729         if (priv->registered) {
1730                 mutex_lock(&mdev->state_lock);
1731                 ether_ifdetach(dev);
1732                 mutex_unlock(&mdev->state_lock);
1733         }
1734
1735         if (priv->allocated)
1736                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
1737
1738         mutex_lock(&mdev->state_lock);
1739         mlx4_en_stop_port(dev);
1740         mutex_unlock(&mdev->state_lock);
1741
1742
1743         cancel_delayed_work(&priv->stats_task);
1744         cancel_delayed_work(&priv->service_task);
1745         /* flush any pending task for this netdev */
1746         flush_workqueue(mdev->workqueue);
1747         callout_drain(&priv->watchdog_timer);
1748
1749         /* Detach the netdev so tasks would not attempt to access it */
1750         mutex_lock(&mdev->state_lock);
1751         mdev->pndev[priv->port] = NULL;
1752         mutex_unlock(&mdev->state_lock);
1753
1754
1755         mlx4_en_free_resources(priv);
1756
1757         /* freeing the sysctl conf cannot be called from within mlx4_en_free_resources */
1758         if (priv->conf_sysctl != NULL)
1759                 sysctl_ctx_free(&priv->conf_ctx);
1760
1761         kfree(priv->tx_ring);
1762         kfree(priv->tx_cq);
1763
1764         kfree(priv);
1765         if_free(dev);
1766
1767 }
1768
1769 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
1770 {
1771         struct mlx4_en_priv *priv = netdev_priv(dev);
1772         struct mlx4_en_dev *mdev = priv->mdev;
1773         int err = 0;
1774
1775         en_dbg(DRV, priv, "Change MTU called - current:%u new:%u\n",
1776                (unsigned)dev->if_mtu, (unsigned)new_mtu);
1777
1778         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
1779                 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
1780                 return -EPERM;
1781         }
1782         mutex_lock(&mdev->state_lock);
1783         dev->if_mtu = new_mtu;
1784         if (dev->if_drv_flags & IFF_DRV_RUNNING) {
1785                 if (!mdev->device_up) {
1786                         /* NIC is probably restarting - let watchdog task reset
1787                          *                          * the port */
1788                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
1789                 } else {
1790                         mlx4_en_stop_port(dev);
1791                         err = mlx4_en_start_port(dev);
1792                         if (err) {
1793                                 en_err(priv, "Failed restarting port:%d\n",
1794                                                 priv->port);
1795                                 queue_work(mdev->workqueue, &priv->watchdog_task);
1796                         }
1797                 }
1798         }
1799         mutex_unlock(&mdev->state_lock);
1800         return 0;
1801 }
1802
1803 static int mlx4_en_calc_media(struct mlx4_en_priv *priv)
1804 {
1805         int trans_type;
1806         int active;
1807
1808         active = IFM_ETHER;
1809         if (priv->last_link_state == MLX4_DEV_EVENT_PORT_DOWN)
1810                 return (active);
1811         active |= IFM_FDX;
1812         trans_type = priv->port_state.transciver;
1813         /* XXX I don't know all of the transceiver values. */
1814         switch (priv->port_state.link_speed) {
1815         case 1000:
1816                 active |= IFM_1000_T;
1817                 break;
1818         case 10000:
1819                 if (trans_type > 0 && trans_type <= 0xC)
1820                         active |= IFM_10G_SR;
1821                 else if (trans_type == 0x80 || trans_type == 0)
1822                         active |= IFM_10G_CX4;
1823                 break;
1824         case 40000:
1825                 active |= IFM_40G_CR4;
1826                 break;
1827         }
1828         if (priv->prof->tx_pause)
1829                 active |= IFM_ETH_TXPAUSE;
1830         if (priv->prof->rx_pause)
1831                 active |= IFM_ETH_RXPAUSE;
1832
1833         return (active);
1834 }
1835
1836 static void mlx4_en_media_status(struct ifnet *dev, struct ifmediareq *ifmr)
1837 {
1838         struct mlx4_en_priv *priv;
1839
1840         priv = dev->if_softc;
1841         ifmr->ifm_status = IFM_AVALID;
1842         if (priv->last_link_state != MLX4_DEV_EVENT_PORT_DOWN)
1843                 ifmr->ifm_status |= IFM_ACTIVE;
1844         ifmr->ifm_active = mlx4_en_calc_media(priv);
1845
1846         return;
1847 }
1848
1849 static int mlx4_en_media_change(struct ifnet *dev)
1850 {
1851         struct mlx4_en_priv *priv;
1852         struct ifmedia *ifm;
1853         int rxpause;
1854         int txpause;
1855         int error;
1856
1857         priv = dev->if_softc;
1858         ifm = &priv->media;
1859         rxpause = txpause = 0;
1860         error = 0;
1861
1862         if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1863                 return (EINVAL);
1864         switch (IFM_SUBTYPE(ifm->ifm_media)) {
1865         case IFM_AUTO:
1866                 break;
1867         case IFM_10G_SR:
1868         case IFM_10G_CX4:
1869         case IFM_1000_T:
1870         case IFM_40G_CR4:
1871                 if ((IFM_SUBTYPE(ifm->ifm_media)
1872                         == IFM_SUBTYPE(mlx4_en_calc_media(priv)))
1873                         && (ifm->ifm_media & IFM_FDX))
1874                         break;
1875                 /* Fallthrough */
1876         default:
1877                 printf("%s: Only auto media type\n", if_name(dev));
1878                 return (EINVAL);
1879         }
1880         /* Allow user to set/clear pause */
1881         if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_RXPAUSE)
1882                 rxpause = 1;
1883         if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_TXPAUSE)
1884                 txpause = 1;
1885         if (priv->prof->tx_pause != txpause || priv->prof->rx_pause != rxpause) {
1886                 priv->prof->tx_pause = txpause;
1887                 priv->prof->rx_pause = rxpause;
1888                 error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
1889                      priv->rx_mb_size + ETHER_CRC_LEN, priv->prof->tx_pause,
1890                      priv->prof->tx_ppp, priv->prof->rx_pause,
1891                      priv->prof->rx_ppp);
1892         }
1893         return (error);
1894 }
1895
1896 static int mlx4_en_ioctl(struct ifnet *dev, u_long command, caddr_t data)
1897 {
1898         struct mlx4_en_priv *priv;
1899         struct mlx4_en_dev *mdev;
1900         struct ifreq *ifr;
1901         int error;
1902         int mask;
1903
1904         error = 0;
1905         mask = 0;
1906         priv = dev->if_softc;
1907         mdev = priv->mdev;
1908         ifr = (struct ifreq *) data;
1909         switch (command) {
1910
1911         case SIOCSIFMTU:
1912                 error = -mlx4_en_change_mtu(dev, ifr->ifr_mtu);
1913                 break;
1914         case SIOCSIFFLAGS:
1915                 if (dev->if_flags & IFF_UP) {
1916                         if ((dev->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1917                                 mutex_lock(&mdev->state_lock);
1918                                 mlx4_en_start_port(dev);
1919                                 mutex_unlock(&mdev->state_lock);
1920                         } else {
1921                                 mlx4_en_set_rx_mode(dev);
1922                         }
1923                 } else {
1924                         mutex_lock(&mdev->state_lock);
1925                         if (dev->if_drv_flags & IFF_DRV_RUNNING) {
1926                                 mlx4_en_stop_port(dev);
1927                                 if_link_state_change(dev, LINK_STATE_DOWN);
1928                         }
1929                         mutex_unlock(&mdev->state_lock);
1930                 }
1931                 break;
1932         case SIOCADDMULTI:
1933         case SIOCDELMULTI:
1934                 mlx4_en_set_rx_mode(dev);
1935                 break;
1936         case SIOCSIFMEDIA:
1937         case SIOCGIFMEDIA:
1938                 error = ifmedia_ioctl(dev, ifr, &priv->media, command);
1939                 break;
1940         case SIOCSIFCAP:
1941                 mutex_lock(&mdev->state_lock);
1942                 mask = ifr->ifr_reqcap ^ dev->if_capenable;
1943                 if (mask & IFCAP_TXCSUM) {
1944                         dev->if_capenable ^= IFCAP_TXCSUM;
1945                         dev->if_hwassist ^= (CSUM_TCP | CSUM_UDP | CSUM_IP);
1946
1947                         if (IFCAP_TSO4 & dev->if_capenable &&
1948                             !(IFCAP_TXCSUM & dev->if_capenable)) {
1949                                 dev->if_capenable &= ~IFCAP_TSO4;
1950                                 dev->if_hwassist &= ~CSUM_TSO;
1951                                 if_printf(dev,
1952                                     "tso4 disabled due to -txcsum.\n");
1953                         }
1954                 }
1955                 if (mask & IFCAP_TXCSUM_IPV6) {
1956                         dev->if_capenable ^= IFCAP_TXCSUM_IPV6;
1957                         dev->if_hwassist ^= (CSUM_UDP_IPV6 | CSUM_TCP_IPV6);
1958
1959                         if (IFCAP_TSO6 & dev->if_capenable &&
1960                             !(IFCAP_TXCSUM_IPV6 & dev->if_capenable)) {
1961                                 dev->if_capenable &= ~IFCAP_TSO6;
1962                                 dev->if_hwassist &= ~CSUM_TSO;
1963                                 if_printf(dev,
1964                                     "tso6 disabled due to -txcsum6.\n");
1965                         }
1966                 }
1967                 if (mask & IFCAP_RXCSUM)
1968                         dev->if_capenable ^= IFCAP_RXCSUM;
1969                 if (mask & IFCAP_RXCSUM_IPV6)
1970                         dev->if_capenable ^= IFCAP_RXCSUM_IPV6;
1971
1972                 if (mask & IFCAP_TSO4) {
1973                         if (!(IFCAP_TSO4 & dev->if_capenable) &&
1974                             !(IFCAP_TXCSUM & dev->if_capenable)) {
1975                                 if_printf(dev, "enable txcsum first.\n");
1976                                 error = EAGAIN;
1977                                 goto out;
1978                         }
1979                         dev->if_capenable ^= IFCAP_TSO4;
1980                 }
1981                 if (mask & IFCAP_TSO6) {
1982                         if (!(IFCAP_TSO6 & dev->if_capenable) &&
1983                             !(IFCAP_TXCSUM_IPV6 & dev->if_capenable)) {
1984                                 if_printf(dev, "enable txcsum6 first.\n");
1985                                 error = EAGAIN;
1986                                 goto out;
1987                         }
1988                         dev->if_capenable ^= IFCAP_TSO6;
1989                 }
1990                 if (dev->if_capenable & (IFCAP_TSO4 | IFCAP_TSO6))
1991                         dev->if_hwassist |= CSUM_TSO;
1992                 else
1993                         dev->if_hwassist &= ~CSUM_TSO;
1994                 if (mask & IFCAP_LRO)
1995                         dev->if_capenable ^= IFCAP_LRO;
1996                 if (mask & IFCAP_VLAN_HWTAGGING)
1997                         dev->if_capenable ^= IFCAP_VLAN_HWTAGGING;
1998                 if (mask & IFCAP_VLAN_HWFILTER)
1999                         dev->if_capenable ^= IFCAP_VLAN_HWFILTER;
2000                 if (mask & IFCAP_WOL_MAGIC)
2001                         dev->if_capenable ^= IFCAP_WOL_MAGIC;
2002                 if (dev->if_drv_flags & IFF_DRV_RUNNING)
2003                         mlx4_en_start_port(dev);
2004 out:
2005                 mutex_unlock(&mdev->state_lock);
2006                 VLAN_CAPABILITIES(dev);
2007                 break;
2008 #if __FreeBSD_version >= 1100036
2009         case SIOCGI2C: {
2010                 struct ifi2creq i2c;
2011
2012                 error = copyin(ifr->ifr_data, &i2c, sizeof(i2c));
2013                 if (error)
2014                         break;
2015                 if (i2c.len > sizeof(i2c.data)) {
2016                         error = EINVAL;
2017                         break;
2018                 }
2019                 /*
2020                  * Note that we ignore i2c.addr here. The driver hardcodes
2021                  * the address to 0x50, while standard expects it to be 0xA0.
2022                  */
2023                 error = mlx4_get_module_info(mdev->dev, priv->port,
2024                     i2c.offset, i2c.len, i2c.data);
2025                 if (error < 0) {
2026                         error = -error;
2027                         break;
2028                 }
2029                 error = copyout(&i2c, ifr->ifr_data, sizeof(i2c));
2030                 break;
2031         }
2032 #endif
2033         default:
2034                 error = ether_ioctl(dev, command, data);
2035                 break;
2036         }
2037
2038         return (error);
2039 }
2040
2041
2042 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2043                         struct mlx4_en_port_profile *prof)
2044 {
2045         struct net_device *dev;
2046         struct mlx4_en_priv *priv;
2047         uint8_t dev_addr[ETHER_ADDR_LEN];
2048         int err;
2049         int i;
2050
2051         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
2052         dev = priv->dev = if_alloc(IFT_ETHER);
2053         if (dev == NULL) {
2054                 en_err(priv, "Net device allocation failed\n");
2055                 kfree(priv);
2056                 return -ENOMEM;
2057         }
2058         dev->if_softc = priv;
2059         if_initname(dev, "mlxen", atomic_fetchadd_int(&mlx4_en_unit, 1));
2060         dev->if_mtu = ETHERMTU;
2061         dev->if_init = mlx4_en_open;
2062         dev->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
2063         dev->if_ioctl = mlx4_en_ioctl;
2064         dev->if_transmit = mlx4_en_transmit;
2065         dev->if_qflush = mlx4_en_qflush;
2066         dev->if_snd.ifq_maxlen = prof->tx_ring_size;
2067
2068         /*
2069          * Initialize driver private data
2070          */
2071         priv->counter_index = 0xff;
2072         spin_lock_init(&priv->stats_lock);
2073         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2074         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2075         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2076         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2077         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2078         callout_init(&priv->watchdog_timer, 1);
2079 #ifdef CONFIG_RFS_ACCEL
2080         INIT_LIST_HEAD(&priv->filters);
2081         spin_lock_init(&priv->filters_lock);
2082 #endif
2083
2084         priv->msg_enable = MLX4_EN_MSG_LEVEL;
2085         priv->dev = dev;
2086         priv->mdev = mdev;
2087         priv->ddev = &mdev->pdev->dev;
2088         priv->prof = prof;
2089         priv->port = port;
2090         priv->port_up = false;
2091         priv->flags = prof->flags;
2092
2093         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2094         priv->tx_ring_num = prof->tx_ring_num;
2095         priv->tx_ring = kcalloc(MAX_TX_RINGS,
2096                                 sizeof(struct mlx4_en_tx_ring *), GFP_KERNEL);
2097         if (!priv->tx_ring) {
2098                 err = -ENOMEM;
2099                 goto out;
2100         }
2101         priv->tx_cq = kcalloc(sizeof(struct mlx4_en_cq *), MAX_TX_RINGS,
2102                         GFP_KERNEL);
2103         if (!priv->tx_cq) {
2104                 err = -ENOMEM;
2105                 goto out;
2106         }
2107
2108         priv->rx_ring_num = prof->rx_ring_num;
2109         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2110         priv->mac_index = -1;
2111         priv->last_ifq_jiffies = 0;
2112         priv->if_counters_rx_errors = 0;
2113         priv->if_counters_rx_no_buffer = 0;
2114 #ifdef CONFIG_MLX4_EN_DCB
2115         if (!mlx4_is_slave(priv->mdev->dev)) {
2116                 priv->dcbx_cap = DCB_CAP_DCBX_HOST;
2117                 priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
2118                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
2119                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2120                 } else {
2121                         en_info(priv, "QoS disabled - no HW support\n");
2122                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2123                 }
2124         }
2125 #endif
2126
2127         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2128                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2129
2130         /* Query for default mac and max mtu */
2131         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2132         priv->mac = mdev->dev->caps.def_mac[priv->port];
2133         if (ILLEGAL_MAC(priv->mac)) {
2134 #if BITS_PER_LONG == 64
2135                 en_err(priv, "Port: %d, invalid mac burned: 0x%lx, quiting\n",
2136                                 priv->port, priv->mac);
2137 #elif BITS_PER_LONG == 32
2138                 en_err(priv, "Port: %d, invalid mac burned: 0x%llx, quiting\n",
2139                                 priv->port, priv->mac);
2140 #endif
2141                 err = -EINVAL;
2142                 goto out;
2143         }
2144
2145         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2146                                           DS_SIZE);
2147
2148         mlx4_en_sysctl_conf(priv);
2149
2150         err = mlx4_en_alloc_resources(priv);
2151         if (err)
2152                 goto out;
2153
2154         /* Allocate page for receive rings */
2155         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2156                                 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2157         if (err) {
2158                 en_err(priv, "Failed to allocate page for rx qps\n");
2159                 goto out;
2160         }
2161         priv->allocated = 1;
2162
2163         /*
2164          * Set driver features
2165          */
2166         dev->if_capabilities |= IFCAP_HWCSUM | IFCAP_HWCSUM_IPV6;
2167         dev->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING;
2168         dev->if_capabilities |= IFCAP_VLAN_HWCSUM | IFCAP_VLAN_HWFILTER;
2169         dev->if_capabilities |= IFCAP_LINKSTATE | IFCAP_JUMBO_MTU;
2170         dev->if_capabilities |= IFCAP_LRO;
2171
2172         if (mdev->LSO_support)
2173                 dev->if_capabilities |= IFCAP_TSO4 | IFCAP_TSO6 | IFCAP_VLAN_HWTSO;
2174
2175         /* set TSO limits so that we don't have to drop TX packets */
2176         dev->if_hw_tsomax = MLX4_EN_TX_MAX_PAYLOAD_SIZE - (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN) /* hdr */;
2177         dev->if_hw_tsomaxsegcount = MLX4_EN_TX_MAX_MBUF_FRAGS - 1 /* hdr */;
2178         dev->if_hw_tsomaxsegsize = MLX4_EN_TX_MAX_MBUF_SIZE;
2179
2180         dev->if_capenable = dev->if_capabilities;
2181
2182         dev->if_hwassist = 0;
2183         if (dev->if_capenable & (IFCAP_TSO4 | IFCAP_TSO6))
2184                 dev->if_hwassist |= CSUM_TSO;
2185         if (dev->if_capenable & IFCAP_TXCSUM)
2186                 dev->if_hwassist |= (CSUM_TCP | CSUM_UDP | CSUM_IP);
2187         if (dev->if_capenable & IFCAP_TXCSUM_IPV6)
2188                 dev->if_hwassist |= (CSUM_UDP_IPV6 | CSUM_TCP_IPV6);
2189
2190
2191         /* Register for VLAN events */
2192         priv->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
2193             mlx4_en_vlan_rx_add_vid, priv, EVENTHANDLER_PRI_FIRST);
2194         priv->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
2195             mlx4_en_vlan_rx_kill_vid, priv, EVENTHANDLER_PRI_FIRST);
2196
2197         mdev->pndev[priv->port] = dev;
2198
2199         priv->last_link_state = MLX4_DEV_EVENT_PORT_DOWN;
2200         mlx4_en_set_default_moderation(priv);
2201
2202         /* Set default MAC */
2203         for (i = 0; i < ETHER_ADDR_LEN; i++)
2204                 dev_addr[ETHER_ADDR_LEN - 1 - i] = (u8) (priv->mac >> (8 * i));
2205
2206
2207         ether_ifattach(dev, dev_addr);
2208         if_link_state_change(dev, LINK_STATE_DOWN);
2209         ifmedia_init(&priv->media, IFM_IMASK | IFM_ETH_FMASK,
2210             mlx4_en_media_change, mlx4_en_media_status);
2211         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_1000_T, 0, NULL);
2212         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_SR, 0, NULL);
2213         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_CX4, 0, NULL);
2214         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_40G_CR4, 0, NULL);
2215         ifmedia_add(&priv->media, IFM_ETHER | IFM_AUTO, 0, NULL);
2216         ifmedia_set(&priv->media, IFM_ETHER | IFM_AUTO);
2217
2218         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2219         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2220
2221         priv->registered = 1;
2222
2223         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2224         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2225
2226
2227         priv->rx_mb_size = dev->if_mtu + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN;
2228         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2229                                     priv->rx_mb_size,
2230                                     prof->tx_pause, prof->tx_ppp,
2231                                     prof->rx_pause, prof->rx_ppp);
2232         if (err) {
2233                 en_err(priv, "Failed setting port general configurations "
2234                        "for port %d, with error %d\n", priv->port, err);
2235                 goto out;
2236         }
2237
2238         /* Init port */
2239         en_warn(priv, "Initializing port\n");
2240         err = mlx4_INIT_PORT(mdev->dev, priv->port);
2241         if (err) {
2242                 en_err(priv, "Failed Initializing port\n");
2243                 goto out;
2244         }
2245
2246         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2247
2248         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2249                 queue_delayed_work(mdev->workqueue, &priv->service_task, SERVICE_TASK_DELAY);
2250
2251         return 0;
2252
2253 out:
2254         mlx4_en_destroy_netdev(dev);
2255         return err;
2256 }
2257
2258 static int mlx4_en_set_ring_size(struct net_device *dev,
2259     int rx_size, int tx_size)
2260 {
2261         struct mlx4_en_priv *priv = netdev_priv(dev);
2262         struct mlx4_en_dev *mdev = priv->mdev;
2263         int port_up = 0;
2264         int err = 0;
2265
2266         rx_size = roundup_pow_of_two(rx_size);
2267         rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE);
2268         rx_size = min_t(u32, rx_size, MLX4_EN_MAX_RX_SIZE);
2269         tx_size = roundup_pow_of_two(tx_size);
2270         tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE);
2271         tx_size = min_t(u32, tx_size, MLX4_EN_MAX_TX_SIZE);
2272
2273         if (rx_size == (priv->port_up ?
2274             priv->rx_ring[0]->actual_size : priv->rx_ring[0]->size) &&
2275             tx_size == priv->tx_ring[0]->size)
2276                 return 0;
2277         mutex_lock(&mdev->state_lock);
2278         if (priv->port_up) {
2279                 port_up = 1;
2280                 mlx4_en_stop_port(dev);
2281         }
2282         mlx4_en_free_resources(priv);
2283         priv->prof->tx_ring_size = tx_size;
2284         priv->prof->rx_ring_size = rx_size;
2285         err = mlx4_en_alloc_resources(priv);
2286         if (err) {
2287                 en_err(priv, "Failed reallocating port resources\n");
2288                 goto out;
2289         }
2290         if (port_up) {
2291                 err = mlx4_en_start_port(dev);
2292                 if (err)
2293                         en_err(priv, "Failed starting port\n");
2294         }
2295 out:
2296         mutex_unlock(&mdev->state_lock);
2297         return err;
2298 }
2299 static int mlx4_en_set_rx_ring_size(SYSCTL_HANDLER_ARGS)
2300 {
2301         struct mlx4_en_priv *priv;
2302         int size;
2303         int error;
2304
2305         priv = arg1;
2306         size = priv->prof->rx_ring_size;
2307         error = sysctl_handle_int(oidp, &size, 0, req);
2308         if (error || !req->newptr)
2309                 return (error);
2310         error = -mlx4_en_set_ring_size(priv->dev, size,
2311             priv->prof->tx_ring_size);
2312         return (error);
2313 }
2314
2315 static int mlx4_en_set_tx_ring_size(SYSCTL_HANDLER_ARGS)
2316 {
2317         struct mlx4_en_priv *priv;
2318         int size;
2319         int error;
2320
2321         priv = arg1;
2322         size = priv->prof->tx_ring_size;
2323         error = sysctl_handle_int(oidp, &size, 0, req);
2324         if (error || !req->newptr)
2325                 return (error);
2326         error = -mlx4_en_set_ring_size(priv->dev, priv->prof->rx_ring_size,
2327             size);
2328
2329         return (error);
2330 }
2331
2332 static int mlx4_en_get_module_info(struct net_device *dev,
2333                                    struct ethtool_modinfo *modinfo)
2334 {
2335         struct mlx4_en_priv *priv = netdev_priv(dev);
2336         struct mlx4_en_dev *mdev = priv->mdev;
2337         int ret;
2338         u8 data[4];
2339
2340         /* Read first 2 bytes to get Module & REV ID */
2341         ret = mlx4_get_module_info(mdev->dev, priv->port,
2342                                    0/*offset*/, 2/*size*/, data);
2343
2344         if (ret < 2) {
2345                 en_err(priv, "Failed to read eeprom module first two bytes, error: 0x%x\n", -ret);
2346                 return -EIO;
2347         }
2348
2349         switch (data[0] /* identifier */) {
2350         case MLX4_MODULE_ID_QSFP:
2351                 modinfo->type = ETH_MODULE_SFF_8436;
2352                 modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
2353                 break;
2354         case MLX4_MODULE_ID_QSFP_PLUS:
2355                 if (data[1] >= 0x3) { /* revision id */
2356                         modinfo->type = ETH_MODULE_SFF_8636;
2357                         modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
2358                 } else {
2359                         modinfo->type = ETH_MODULE_SFF_8436;
2360                         modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
2361                 }
2362                 break;
2363         case MLX4_MODULE_ID_QSFP28:
2364                 modinfo->type = ETH_MODULE_SFF_8636;
2365                 modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
2366                 break;
2367         case MLX4_MODULE_ID_SFP:
2368                 modinfo->type = ETH_MODULE_SFF_8472;
2369                 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
2370                 break;
2371         default:
2372                 en_err(priv, "mlx4_en_get_module_info :  Not recognized cable type\n");
2373                 return -EINVAL;
2374         }
2375
2376         return 0;
2377 }
2378
2379 static int mlx4_en_get_module_eeprom(struct net_device *dev,
2380                                      struct ethtool_eeprom *ee,
2381                                      u8 *data)
2382 {
2383         struct mlx4_en_priv *priv = netdev_priv(dev);
2384         struct mlx4_en_dev *mdev = priv->mdev;
2385         int offset = ee->offset;
2386         int i = 0, ret;
2387
2388         if (ee->len == 0)
2389                 return -EINVAL;
2390
2391         memset(data, 0, ee->len);
2392
2393         while (i < ee->len) {
2394                 en_dbg(DRV, priv,
2395                        "mlx4_get_module_info i(%d) offset(%d) len(%d)\n",
2396                        i, offset, ee->len - i);
2397
2398                 ret = mlx4_get_module_info(mdev->dev, priv->port,
2399                                            offset, ee->len - i, data + i);
2400
2401                 if (!ret) /* Done reading */
2402                         return 0;
2403
2404                 if (ret < 0) {
2405                         en_err(priv,
2406                                "mlx4_get_module_info i(%d) offset(%d) bytes_to_read(%d) - FAILED (0x%x)\n",
2407                                i, offset, ee->len - i, ret);
2408                         return -1;
2409                 }
2410
2411                 i += ret;
2412                 offset += ret;
2413         }
2414         return 0;
2415 }
2416
2417 static void mlx4_en_print_eeprom(u8 *data, __u32 len)
2418 {
2419         int             i;
2420         int             j = 0;
2421         int             row = 0;
2422         const int       NUM_OF_BYTES = 16;
2423
2424         printf("\nOffset\t\tValues\n");
2425         printf("------\t\t------\n");
2426         while(row < len){
2427                 printf("0x%04x\t\t",row);
2428                 for(i=0; i < NUM_OF_BYTES; i++){
2429                         printf("%02x ", data[j]);
2430                         row++;
2431                         j++;
2432                 }
2433                 printf("\n");
2434         }
2435 }
2436
2437 /* Read cable EEPROM module information by first inspecting the first
2438  * two bytes to get the length and then read the rest of the information.
2439  * The information is printed to dmesg. */
2440 static int mlx4_en_read_eeprom(SYSCTL_HANDLER_ARGS)
2441 {
2442
2443         u8*             data;
2444         int             error;
2445         int             result = 0;
2446         struct          mlx4_en_priv *priv;
2447         struct          net_device *dev;
2448         struct          ethtool_modinfo modinfo;
2449         struct          ethtool_eeprom ee;
2450
2451         error = sysctl_handle_int(oidp, &result, 0, req);
2452         if (error || !req->newptr)
2453                 return (error);
2454
2455         if (result == 1) {
2456                 priv = arg1;
2457                 dev = priv->dev;
2458                 data = kmalloc(PAGE_SIZE, GFP_KERNEL);
2459
2460                 error = mlx4_en_get_module_info(dev, &modinfo);
2461                 if (error) {
2462                         en_err(priv,
2463                                "mlx4_en_get_module_info returned with error - FAILED (0x%x)\n",
2464                                -error);
2465                         goto out;
2466                 }
2467
2468                 ee.len = modinfo.eeprom_len;
2469                 ee.offset = 0;
2470
2471                 error = mlx4_en_get_module_eeprom(dev, &ee, data);
2472                 if (error) {
2473                         en_err(priv,
2474                                "mlx4_en_get_module_eeprom returned with error - FAILED (0x%x)\n",
2475                                -error);
2476                         /* Continue printing partial information in case of an error */
2477                 }
2478
2479                 /* EEPROM information will be printed in dmesg */
2480                 mlx4_en_print_eeprom(data, ee.len);
2481 out:
2482                 kfree(data);
2483         }
2484         /* Return zero to prevent sysctl failure. */
2485         return (0);
2486 }
2487
2488 static int mlx4_en_set_tx_ppp(SYSCTL_HANDLER_ARGS)
2489 {
2490         struct mlx4_en_priv *priv;
2491         int ppp;
2492         int error;
2493
2494         priv = arg1;
2495         ppp = priv->prof->tx_ppp;
2496         error = sysctl_handle_int(oidp, &ppp, 0, req);
2497         if (error || !req->newptr)
2498                 return (error);
2499         if (ppp > 0xff || ppp < 0)
2500                 return (-EINVAL);
2501         priv->prof->tx_ppp = ppp;
2502         error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
2503                                        priv->rx_mb_size + ETHER_CRC_LEN,
2504                                        priv->prof->tx_pause,
2505                                        priv->prof->tx_ppp,
2506                                        priv->prof->rx_pause,
2507                                        priv->prof->rx_ppp);
2508
2509         return (error);
2510 }
2511
2512 static int mlx4_en_set_rx_ppp(SYSCTL_HANDLER_ARGS)
2513 {
2514         struct mlx4_en_priv *priv;
2515         struct mlx4_en_dev *mdev;
2516         int ppp;
2517         int error;
2518         int port_up;
2519
2520         port_up = 0;
2521         priv = arg1;
2522         mdev = priv->mdev;
2523         ppp = priv->prof->rx_ppp;
2524         error = sysctl_handle_int(oidp, &ppp, 0, req);
2525         if (error || !req->newptr)
2526                 return (error);
2527         if (ppp > 0xff || ppp < 0)
2528                 return (-EINVAL);
2529         /* See if we have to change the number of tx queues. */
2530         if (!ppp != !priv->prof->rx_ppp) {
2531                 mutex_lock(&mdev->state_lock);
2532                 if (priv->port_up) {
2533                         port_up = 1;
2534                         mlx4_en_stop_port(priv->dev);
2535                 }
2536                 mlx4_en_free_resources(priv);
2537                 priv->prof->rx_ppp = ppp;
2538                 error = -mlx4_en_alloc_resources(priv);
2539                 if (error)
2540                         en_err(priv, "Failed reallocating port resources\n");
2541                 if (error == 0 && port_up) {
2542                         error = -mlx4_en_start_port(priv->dev);
2543                         if (error)
2544                                 en_err(priv, "Failed starting port\n");
2545                 }
2546                 mutex_unlock(&mdev->state_lock);
2547                 return (error);
2548
2549         }
2550         priv->prof->rx_ppp = ppp;
2551         error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
2552                                        priv->rx_mb_size + ETHER_CRC_LEN,
2553                                        priv->prof->tx_pause,
2554                                        priv->prof->tx_ppp,
2555                                        priv->prof->rx_pause,
2556                                        priv->prof->rx_ppp);
2557
2558         return (error);
2559 }
2560
2561 static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv)
2562 {
2563         struct net_device *dev;
2564         struct sysctl_ctx_list *ctx;
2565         struct sysctl_oid *node;
2566         struct sysctl_oid_list *node_list;
2567         struct sysctl_oid *coal;
2568         struct sysctl_oid_list *coal_list;
2569         const char *pnameunit;
2570
2571         dev = priv->dev;
2572         ctx = &priv->conf_ctx;
2573         pnameunit = device_get_nameunit(priv->mdev->pdev->dev.bsddev);
2574
2575         sysctl_ctx_init(ctx);
2576         priv->conf_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw),
2577             OID_AUTO, dev->if_xname, CTLFLAG_RD, 0, "mlx4 10gig ethernet");
2578         node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->conf_sysctl), OID_AUTO,
2579             "conf", CTLFLAG_RD, NULL, "Configuration");
2580         node_list = SYSCTL_CHILDREN(node);
2581
2582         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "msg_enable",
2583             CTLFLAG_RW, &priv->msg_enable, 0,
2584             "Driver message enable bitfield");
2585         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_rings",
2586             CTLFLAG_RD, &priv->rx_ring_num, 0,
2587             "Number of receive rings");
2588         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_rings",
2589             CTLFLAG_RD, &priv->tx_ring_num, 0,
2590             "Number of transmit rings");
2591         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_size",
2592             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2593             mlx4_en_set_rx_ring_size, "I", "Receive ring size");
2594         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_size",
2595             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2596             mlx4_en_set_tx_ring_size, "I", "Transmit ring size");
2597         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_ppp",
2598             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2599             mlx4_en_set_tx_ppp, "I", "TX Per-priority pause");
2600         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_ppp",
2601             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2602             mlx4_en_set_rx_ppp, "I", "RX Per-priority pause");
2603         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "port_num",
2604             CTLFLAG_RD, &priv->port, 0,
2605             "Port Number");
2606         SYSCTL_ADD_STRING(ctx, node_list, OID_AUTO, "device_name",
2607             CTLFLAG_RD, __DECONST(void *, pnameunit), 0,
2608             "PCI device name");
2609
2610         /* Add coalescer configuration. */
2611         coal = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO,
2612             "coalesce", CTLFLAG_RD, NULL, "Interrupt coalesce configuration");
2613         coal_list = SYSCTL_CHILDREN(coal);
2614         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_low",
2615             CTLFLAG_RW, &priv->pkt_rate_low, 0,
2616             "Packets per-second for minimum delay");
2617         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_low",
2618             CTLFLAG_RW, &priv->rx_usecs_low, 0,
2619             "Minimum RX delay in micro-seconds");
2620         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_high",
2621             CTLFLAG_RW, &priv->pkt_rate_high, 0,
2622             "Packets per-second for maximum delay");
2623         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_high",
2624             CTLFLAG_RW, &priv->rx_usecs_high, 0,
2625             "Maximum RX delay in micro-seconds");
2626         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "sample_interval",
2627             CTLFLAG_RW, &priv->sample_interval, 0,
2628             "adaptive frequency in units of HZ ticks");
2629         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "adaptive_rx_coal",
2630             CTLFLAG_RW, &priv->adaptive_rx_coal, 0,
2631             "Enable adaptive rx coalescing");
2632         /* EEPROM support */
2633         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "eeprom_info",
2634             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2635             mlx4_en_read_eeprom, "I", "EEPROM information");
2636 }
2637
2638 static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv)
2639 {
2640         struct sysctl_ctx_list *ctx;
2641         struct sysctl_oid_list *node_list;
2642         struct sysctl_oid *ring_node;
2643         struct sysctl_oid_list *ring_list;
2644         struct mlx4_en_tx_ring *tx_ring;
2645         struct mlx4_en_rx_ring *rx_ring;
2646         char namebuf[128];
2647         int i;
2648
2649         ctx = &priv->stat_ctx;
2650         sysctl_ctx_init(ctx);
2651         priv->stat_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->conf_sysctl), OID_AUTO,
2652             "stat", CTLFLAG_RD, NULL, "Statistics");
2653         node_list = SYSCTL_CHILDREN(priv->stat_sysctl);
2654
2655 #ifdef MLX4_EN_PERF_STAT
2656         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_poll", CTLFLAG_RD,
2657             &priv->pstats.tx_poll, "TX Poll calls");
2658         SYSCTL_ADD_QUAD(ctx, node_list, OID_AUTO, "tx_pktsz_avg", CTLFLAG_RD,
2659             &priv->pstats.tx_pktsz_avg, "TX average packet size");
2660         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "inflight_avg", CTLFLAG_RD,
2661             &priv->pstats.inflight_avg, "TX average packets in-flight");
2662         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_coal_avg", CTLFLAG_RD,
2663             &priv->pstats.tx_coal_avg, "TX average coalesced completions");
2664         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_coal_avg", CTLFLAG_RD,
2665             &priv->pstats.rx_coal_avg, "RX average coalesced completions");
2666 #endif
2667
2668         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tso_packets", CTLFLAG_RD,
2669             &priv->port_stats.tso_packets, "TSO packets sent");
2670         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "queue_stopped", CTLFLAG_RD,
2671             &priv->port_stats.queue_stopped, "Queue full");
2672         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "wake_queue", CTLFLAG_RD,
2673             &priv->port_stats.wake_queue, "Queue resumed after full");
2674         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_timeout", CTLFLAG_RD,
2675             &priv->port_stats.tx_timeout, "Transmit timeouts");
2676         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_oversized_packets", CTLFLAG_RD,
2677             &priv->port_stats.oversized_packets, "TX oversized packets, m_defrag failed");
2678         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_alloc_failed", CTLFLAG_RD,
2679             &priv->port_stats.rx_alloc_failed, "RX failed to allocate mbuf");
2680         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_chksum_good", CTLFLAG_RD,
2681             &priv->port_stats.rx_chksum_good, "RX checksum offload success");
2682         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_chksum_none", CTLFLAG_RD,
2683             &priv->port_stats.rx_chksum_none, "RX without checksum offload");
2684         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_chksum_offload",
2685             CTLFLAG_RD, &priv->port_stats.tx_chksum_offload,
2686             "TX checksum offloads");
2687
2688         /* Could strdup the names and add in a loop.  This is simpler. */
2689         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_bytes", CTLFLAG_RD,
2690             &priv->pkstats.rx_bytes, "RX Bytes");
2691         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_packets", CTLFLAG_RD,
2692             &priv->pkstats.rx_packets, "RX packets");
2693         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_multicast_packets", CTLFLAG_RD,
2694             &priv->pkstats.rx_multicast_packets, "RX Multicast Packets");
2695         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_broadcast_packets", CTLFLAG_RD,
2696             &priv->pkstats.rx_broadcast_packets, "RX Broadcast Packets");
2697         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_errors", CTLFLAG_RD,
2698             &priv->pkstats.rx_errors, "RX Errors");
2699         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_dropped", CTLFLAG_RD,
2700             &priv->pkstats.rx_dropped, "RX Dropped");
2701         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_length_errors", CTLFLAG_RD,
2702             &priv->pkstats.rx_length_errors, "RX Length Errors");
2703         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_over_errors", CTLFLAG_RD,
2704             &priv->pkstats.rx_over_errors, "RX Over Errors");
2705         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_crc_errors", CTLFLAG_RD,
2706             &priv->pkstats.rx_crc_errors, "RX CRC Errors");
2707         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_jabbers", CTLFLAG_RD,
2708             &priv->pkstats.rx_jabbers, "RX Jabbers");
2709
2710
2711         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_in_range_length_error", CTLFLAG_RD,
2712             &priv->pkstats.rx_in_range_length_error, "RX IN_Range Length Error");
2713         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_out_range_length_error",
2714                 CTLFLAG_RD, &priv->pkstats.rx_out_range_length_error,
2715                 "RX Out Range Length Error");
2716         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_lt_64_bytes_packets", CTLFLAG_RD,
2717             &priv->pkstats.rx_lt_64_bytes_packets, "RX Lt 64 Bytes Packets");
2718         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_127_bytes_packets", CTLFLAG_RD,
2719             &priv->pkstats.rx_127_bytes_packets, "RX 127 bytes Packets");
2720         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_255_bytes_packets", CTLFLAG_RD,
2721             &priv->pkstats.rx_255_bytes_packets, "RX 255 bytes Packets");
2722         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_511_bytes_packets", CTLFLAG_RD,
2723             &priv->pkstats.rx_511_bytes_packets, "RX 511 bytes Packets");
2724         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_1023_bytes_packets", CTLFLAG_RD,
2725             &priv->pkstats.rx_1023_bytes_packets, "RX 1023 bytes Packets");
2726         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_1518_bytes_packets", CTLFLAG_RD,
2727             &priv->pkstats.rx_1518_bytes_packets, "RX 1518 bytes Packets");
2728         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_1522_bytes_packets", CTLFLAG_RD,
2729             &priv->pkstats.rx_1522_bytes_packets, "RX 1522 bytes Packets");
2730         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_1548_bytes_packets", CTLFLAG_RD,
2731             &priv->pkstats.rx_1548_bytes_packets, "RX 1548 bytes Packets");
2732         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_gt_1548_bytes_packets", CTLFLAG_RD,
2733             &priv->pkstats.rx_gt_1548_bytes_packets,
2734             "RX Greater Then 1548 bytes Packets");
2735
2736 struct mlx4_en_pkt_stats {
2737         unsigned long tx_packets;
2738         unsigned long tx_bytes;
2739         unsigned long tx_multicast_packets;
2740         unsigned long tx_broadcast_packets;
2741         unsigned long tx_errors;
2742         unsigned long tx_dropped;
2743         unsigned long tx_lt_64_bytes_packets;
2744         unsigned long tx_127_bytes_packets;
2745         unsigned long tx_255_bytes_packets;
2746         unsigned long tx_511_bytes_packets;
2747         unsigned long tx_1023_bytes_packets;
2748         unsigned long tx_1518_bytes_packets;
2749         unsigned long tx_1522_bytes_packets;
2750         unsigned long tx_1548_bytes_packets;
2751         unsigned long tx_gt_1548_bytes_packets;
2752         unsigned long rx_prio[NUM_PRIORITIES][NUM_PRIORITY_STATS];
2753         unsigned long tx_prio[NUM_PRIORITIES][NUM_PRIORITY_STATS];
2754 #define NUM_PKT_STATS           72
2755 };
2756
2757
2758         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_packets", CTLFLAG_RD,
2759             &priv->pkstats.tx_packets, "TX packets");
2760         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_bytes", CTLFLAG_RD,
2761             &priv->pkstats.tx_bytes, "TX Bytes");
2762         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_multicast_packets", CTLFLAG_RD,
2763             &priv->pkstats.tx_multicast_packets, "TX Multicast Packets");
2764         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_broadcast_packets", CTLFLAG_RD,
2765             &priv->pkstats.tx_broadcast_packets, "TX Broadcast Packets");
2766         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_errors", CTLFLAG_RD,
2767             &priv->pkstats.tx_errors, "TX Errors");
2768         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_dropped", CTLFLAG_RD,
2769             &priv->pkstats.tx_dropped, "TX Dropped");
2770         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_lt_64_bytes_packets", CTLFLAG_RD,
2771             &priv->pkstats.tx_lt_64_bytes_packets, "TX Less Then 64 Bytes Packets");
2772         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_127_bytes_packets", CTLFLAG_RD,
2773             &priv->pkstats.tx_127_bytes_packets, "TX 127 Bytes Packets");
2774         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_255_bytes_packets", CTLFLAG_RD,
2775             &priv->pkstats.tx_255_bytes_packets, "TX 255 Bytes Packets");
2776         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_511_bytes_packets", CTLFLAG_RD,
2777             &priv->pkstats.tx_511_bytes_packets, "TX 511 Bytes Packets");
2778         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_1023_bytes_packets", CTLFLAG_RD,
2779             &priv->pkstats.tx_1023_bytes_packets, "TX 1023 Bytes Packets");
2780         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_1518_bytes_packets", CTLFLAG_RD,
2781             &priv->pkstats.tx_1518_bytes_packets, "TX 1518 Bytes Packets");
2782         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_1522_bytes_packets", CTLFLAG_RD,
2783             &priv->pkstats.tx_1522_bytes_packets, "TX 1522 Bytes Packets");
2784         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_1548_bytes_packets", CTLFLAG_RD,
2785             &priv->pkstats.tx_1548_bytes_packets, "TX 1548 Bytes Packets");
2786         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_gt_1548_bytes_packets", CTLFLAG_RD,
2787             &priv->pkstats.tx_gt_1548_bytes_packets,
2788             "TX Greater Then 1548 Bytes Packets");
2789
2790
2791
2792         for (i = 0; i < priv->tx_ring_num; i++) {
2793                 tx_ring = priv->tx_ring[i];
2794                 snprintf(namebuf, sizeof(namebuf), "tx_ring%d", i);
2795                 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
2796                     CTLFLAG_RD, NULL, "TX Ring");
2797                 ring_list = SYSCTL_CHILDREN(ring_node);
2798                 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "packets",
2799                     CTLFLAG_RD, &tx_ring->packets, "TX packets");
2800                 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "bytes",
2801                     CTLFLAG_RD, &tx_ring->bytes, "TX bytes");
2802         }
2803
2804         for (i = 0; i < priv->rx_ring_num; i++) {
2805                 rx_ring = priv->rx_ring[i];
2806                 snprintf(namebuf, sizeof(namebuf), "rx_ring%d", i);
2807                 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
2808                     CTLFLAG_RD, NULL, "RX Ring");
2809                 ring_list = SYSCTL_CHILDREN(ring_node);
2810                 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "packets",
2811                     CTLFLAG_RD, &rx_ring->packets, "RX packets");
2812                 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "bytes",
2813                     CTLFLAG_RD, &rx_ring->bytes, "RX bytes");
2814                 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "error",
2815                     CTLFLAG_RD, &rx_ring->errors, "RX soft errors");
2816         }
2817 }