sys/dev/mlx4/mlx4_en/mlx4_en_netdev.c

   1 /*
   2  * Copyright (c) 2007, 2014 Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  */
  33
  34 #include <linux/etherdevice.h>
  35 #include <linux/delay.h>
  36 #include <linux/slab.h>
  37 #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 <dev/mlx4/driver.h>
  45 #include <dev/mlx4/device.h>
  46 #include <dev/mlx4/cmd.h>
  47 #include <dev/mlx4/cq.h>
  48
  49 #include <sys/sockio.h>
  50 #include <sys/sysctl.h>
  51
  52 #include "en.h"
  53 #include "en_port.h"
  54
  55 static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv);
  56 static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv);
  57
  58 #ifdef CONFIG_NET_RX_BUSY_POLL
  59 /* must be called with local_bh_disable()d */
  60 static int mlx4_en_low_latency_recv(struct napi_struct *napi)
  61 {
  62         struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
  63         struct net_device *dev = cq->dev;
  64         struct mlx4_en_priv *priv = netdev_priv(dev);
  65         struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring];
  66         int done;
  67
  68         if (!priv->port_up)
  69                 return LL_FLUSH_FAILED;
  70
  71         if (!mlx4_en_cq_lock_poll(cq))
  72                 return LL_FLUSH_BUSY;
  73
  74         done = mlx4_en_process_rx_cq(dev, cq, 4);
  75 #ifdef LL_EXTENDED_STATS
  76         if (done)
  77                 rx_ring->cleaned += done;
  78         else
  79                 rx_ring->misses++;
  80 #endif
  81
  82         mlx4_en_cq_unlock_poll(cq);
  83
  84         return done;
  85 }
  86 #endif  /* CONFIG_NET_RX_BUSY_POLL */
  87
  88 #ifdef CONFIG_RFS_ACCEL
  89
  90 struct mlx4_en_filter {
  91         struct list_head next;
  92         struct work_struct work;
  93
  94         u8     ip_proto;
  95         __be32 src_ip;
  96         __be32 dst_ip;
  97         __be16 src_port;
  98         __be16 dst_port;
  99
 100         int rxq_index;
 101         struct mlx4_en_priv *priv;
 102         u32 flow_id;                    /* RFS infrastructure id */
 103         int id;                         /* mlx4_en driver id */
 104         u64 reg_id;                     /* Flow steering API id */
 105         u8 activated;                   /* Used to prevent expiry before filter
 106                                          * is attached
 107                                          */
 108         struct hlist_node filter_chain;
 109 };
 110
 111 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 112
 113 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 114 {
 115         switch (ip_proto) {
 116         case IPPROTO_UDP:
 117                 return MLX4_NET_TRANS_RULE_ID_UDP;
 118         case IPPROTO_TCP:
 119                 return MLX4_NET_TRANS_RULE_ID_TCP;
 120         default:
 121                 return -EPROTONOSUPPORT;
 122         }
 123 };
 124
 125 static void mlx4_en_filter_work(struct work_struct *work)
 126 {
 127         struct mlx4_en_filter *filter = container_of(work,
 128                                                      struct mlx4_en_filter,
 129                                                      work);
 130         struct mlx4_en_priv *priv = filter->priv;
 131         struct mlx4_spec_list spec_tcp_udp = {
 132                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 133                 {
 134                         .tcp_udp = {
 135                                 .dst_port = filter->dst_port,
 136                                 .dst_port_msk = (__force __be16)-1,
 137                                 .src_port = filter->src_port,
 138                                 .src_port_msk = (__force __be16)-1,
 139                         },
 140                 },
 141         };
 142         struct mlx4_spec_list spec_ip = {
 143                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 144                 {
 145                         .ipv4 = {
 146                                 .dst_ip = filter->dst_ip,
 147                                 .dst_ip_msk = (__force __be32)-1,
 148                                 .src_ip = filter->src_ip,
 149                                 .src_ip_msk = (__force __be32)-1,
 150                         },
 151                 },
 152         };
 153         struct mlx4_spec_list spec_eth = {
 154                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 155         };
 156         struct mlx4_net_trans_rule rule = {
 157                 .list = LIST_HEAD_INIT(rule.list),
 158                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 159                 .exclusive = 1,
 160                 .allow_loopback = 1,
 161                 .promisc_mode = MLX4_FS_REGULAR,
 162                 .port = priv->port,
 163                 .priority = MLX4_DOMAIN_RFS,
 164         };
 165         int rc;
 166         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 167
 168         if (spec_tcp_udp.id < 0) {
 169                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 170                         filter->ip_proto);
 171                 goto ignore;
 172         }
 173         list_add_tail(&spec_eth.list, &rule.list);
 174         list_add_tail(&spec_ip.list, &rule.list);
 175         list_add_tail(&spec_tcp_udp.list, &rule.list);
 176
 177         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 178         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 179         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 180
 181         filter->activated = 0;
 182
 183         if (filter->reg_id) {
 184                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 185                 if (rc && rc != -ENOENT)
 186                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 187         }
 188
 189         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 190         if (rc)
 191                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 192
 193 ignore:
 194         mlx4_en_filter_rfs_expire(priv);
 195
 196         filter->activated = 1;
 197 }
 198
 199 static inline struct hlist_head *
 200 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 201                    __be16 src_port, __be16 dst_port)
 202 {
 203         unsigned long l;
 204         int bucket_idx;
 205
 206         l = (__force unsigned long)src_port |
 207             ((__force unsigned long)dst_port << 2);
 208         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 209
 210         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 211
 212         return &priv->filter_hash[bucket_idx];
 213 }
 214
 215 static struct mlx4_en_filter *
 216 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 217                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 218                      __be16 dst_port, u32 flow_id)
 219 {
 220         struct mlx4_en_filter *filter = NULL;
 221
 222         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 223         if (!filter)
 224                 return NULL;
 225
 226         filter->priv = priv;
 227         filter->rxq_index = rxq_index;
 228         INIT_WORK(&filter->work, mlx4_en_filter_work);
 229
 230         filter->src_ip = src_ip;
 231         filter->dst_ip = dst_ip;
 232         filter->ip_proto = ip_proto;
 233         filter->src_port = src_port;
 234         filter->dst_port = dst_port;
 235
 236         filter->flow_id = flow_id;
 237
 238         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 239
 240         list_add_tail(&filter->next, &priv->filters);
 241         hlist_add_head(&filter->filter_chain,
 242                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 243                                           dst_port));
 244
 245         return filter;
 246 }
 247
 248 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 249 {
 250         struct mlx4_en_priv *priv = filter->priv;
 251         int rc;
 252
 253         list_del(&filter->next);
 254
 255         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 256         if (rc && rc != -ENOENT)
 257                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 258
 259         kfree(filter);
 260 }
 261
 262 static inline struct mlx4_en_filter *
 263 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 264                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 265 {
 266         struct mlx4_en_filter *filter;
 267         struct mlx4_en_filter *ret = NULL;
 268
 269         hlist_for_each_entry(filter,
 270                              filter_hash_bucket(priv, src_ip, dst_ip,
 271                                                 src_port, dst_port),
 272                              filter_chain) {
 273                 if (filter->src_ip == src_ip &&
 274                     filter->dst_ip == dst_ip &&
 275                     filter->ip_proto == ip_proto &&
 276                     filter->src_port == src_port &&
 277                     filter->dst_port == dst_port) {
 278                         ret = filter;
 279                         break;
 280                 }
 281         }
 282
 283         return ret;
 284 }
 285
 286 static int
 287 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 288                    u16 rxq_index, u32 flow_id)
 289 {
 290         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 291         struct mlx4_en_filter *filter;
 292         const struct iphdr *ip;
 293         const __be16 *ports;
 294         u8 ip_proto;
 295         __be32 src_ip;
 296         __be32 dst_ip;
 297         __be16 src_port;
 298         __be16 dst_port;
 299         int nhoff = skb_network_offset(skb);
 300         int ret = 0;
 301
 302         if (skb->protocol != htons(ETH_P_IP))
 303                 return -EPROTONOSUPPORT;
 304
 305         ip = (const struct iphdr *)(skb->data + nhoff);
 306         if (ip_is_fragment(ip))
 307                 return -EPROTONOSUPPORT;
 308
 309         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 310                 return -EPROTONOSUPPORT;
 311         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 312
 313         ip_proto = ip->protocol;
 314         src_ip = ip->saddr;
 315         dst_ip = ip->daddr;
 316         src_port = ports[0];
 317         dst_port = ports[1];
 318
 319         spin_lock_bh(&priv->filters_lock);
 320         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 321                                      src_port, dst_port);
 322         if (filter) {
 323                 if (filter->rxq_index == rxq_index)
 324                         goto out;
 325
 326                 filter->rxq_index = rxq_index;
 327         } else {
 328                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 329                                               src_ip, dst_ip, ip_proto,
 330                                               src_port, dst_port, flow_id);
 331                 if (!filter) {
 332                         ret = -ENOMEM;
 333                         goto err;
 334                 }
 335         }
 336
 337         queue_work(priv->mdev->workqueue, &filter->work);
 338
 339 out:
 340         ret = filter->id;
 341 err:
 342         spin_unlock_bh(&priv->filters_lock);
 343
 344         return ret;
 345 }
 346
 347 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv,
 348                              struct mlx4_en_rx_ring *rx_ring)
 349 {
 350         struct mlx4_en_filter *filter, *tmp;
 351         LIST_HEAD(del_list);
 352
 353         spin_lock_bh(&priv->filters_lock);
 354         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 355                 list_move(&filter->next, &del_list);
 356                 hlist_del(&filter->filter_chain);
 357         }
 358         spin_unlock_bh(&priv->filters_lock);
 359
 360         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 361                 cancel_work_sync(&filter->work);
 362                 mlx4_en_filter_free(filter);
 363         }
 364 }
 365
 366 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 367 {
 368         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 369         LIST_HEAD(del_list);
 370         int i = 0;
 371
 372         spin_lock_bh(&priv->filters_lock);
 373         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 374                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 375                         break;
 376
 377                 if (filter->activated &&
 378                     !work_pending(&filter->work) &&
 379                     rps_may_expire_flow(priv->dev,
 380                                         filter->rxq_index, filter->flow_id,
 381                                         filter->id)) {
 382                         list_move(&filter->next, &del_list);
 383                         hlist_del(&filter->filter_chain);
 384                 } else
 385                         last_filter = filter;
 386
 387                 i++;
 388         }
 389
 390         if (last_filter && (&last_filter->next != priv->filters.next))
 391                 list_move(&priv->filters, &last_filter->next);
 392
 393         spin_unlock_bh(&priv->filters_lock);
 394
 395         list_for_each_entry_safe(filter, tmp, &del_list, next)
 396                 mlx4_en_filter_free(filter);
 397 }
 398 #endif
 399
 400 static void mlx4_en_vlan_rx_add_vid(void *arg, struct net_device *dev, u16 vid)
 401 {
 402         struct mlx4_en_priv *priv = netdev_priv(dev);
 403         struct mlx4_en_dev *mdev = priv->mdev;
 404         int err;
 405         int idx;
 406
 407         if (arg != priv)
 408                 return;
 409
 410         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 411
 412         set_bit(vid, priv->active_vlans);
 413
 414         /* Add VID to port VLAN filter */
 415         mutex_lock(&mdev->state_lock);
 416         if (mdev->device_up && priv->port_up) {
 417                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 418                 if (err)
 419                         en_err(priv, "Failed configuring VLAN filter\n");
 420         }
 421         if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
 422                 en_dbg(HW, priv, "failed adding vlan %d\n", vid);
 423         mutex_unlock(&mdev->state_lock);
 424
 425 }
 426
 427 static void mlx4_en_vlan_rx_kill_vid(void *arg, struct net_device *dev, u16 vid)
 428 {
 429         struct mlx4_en_priv *priv = netdev_priv(dev);
 430         struct mlx4_en_dev *mdev = priv->mdev;
 431         int err;
 432
 433         if (arg != priv)
 434                 return;
 435
 436         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 437
 438         clear_bit(vid, priv->active_vlans);
 439
 440         /* Remove VID from port VLAN filter */
 441         mutex_lock(&mdev->state_lock);
 442         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 443
 444         if (mdev->device_up && priv->port_up) {
 445                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 446                 if (err)
 447                         en_err(priv, "Failed configuring VLAN filter\n");
 448         }
 449         mutex_unlock(&mdev->state_lock);
 450
 451 }
 452
 453 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 454                                 unsigned char *mac, int *qpn, u64 *reg_id)
 455 {
 456         struct mlx4_en_dev *mdev = priv->mdev;
 457         struct mlx4_dev *dev = mdev->dev;
 458         int err;
 459
 460         switch (dev->caps.steering_mode) {
 461         case MLX4_STEERING_MODE_B0: {
 462                 struct mlx4_qp qp;
 463                 u8 gid[16] = {0};
 464
 465                 qp.qpn = *qpn;
 466                 memcpy(&gid[10], mac, ETH_ALEN);
 467                 gid[5] = priv->port;
 468
 469                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 470                 break;
 471         }
 472         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 473                 struct mlx4_spec_list spec_eth = { {NULL} };
 474                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 475
 476                 struct mlx4_net_trans_rule rule = {
 477                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 478                         .exclusive = 0,
 479                         .allow_loopback = 1,
 480                         .promisc_mode = MLX4_FS_REGULAR,
 481                         .priority = MLX4_DOMAIN_NIC,
 482                 };
 483
 484                 rule.port = priv->port;
 485                 rule.qpn = *qpn;
 486                 INIT_LIST_HEAD(&rule.list);
 487
 488                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 489                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 490                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 491                 list_add_tail(&spec_eth.list, &rule.list);
 492
 493                 err = mlx4_flow_attach(dev, &rule, reg_id);
 494                 break;
 495         }
 496         default:
 497                 return -EINVAL;
 498         }
 499         if (err)
 500                 en_warn(priv, "Failed Attaching Unicast\n");
 501
 502         return err;
 503 }
 504
 505 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 506                                      unsigned char *mac, int qpn, u64 reg_id)
 507 {
 508         struct mlx4_en_dev *mdev = priv->mdev;
 509         struct mlx4_dev *dev = mdev->dev;
 510
 511         switch (dev->caps.steering_mode) {
 512         case MLX4_STEERING_MODE_B0: {
 513                 struct mlx4_qp qp;
 514                 u8 gid[16] = {0};
 515
 516                 qp.qpn = qpn;
 517                 memcpy(&gid[10], mac, ETH_ALEN);
 518                 gid[5] = priv->port;
 519
 520                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 521                 break;
 522         }
 523         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 524                 mlx4_flow_detach(dev, reg_id);
 525                 break;
 526         }
 527         default:
 528                 en_err(priv, "Invalid steering mode.\n");
 529         }
 530 }
 531
 532 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 533 {
 534         struct mlx4_en_dev *mdev = priv->mdev;
 535         struct mlx4_dev *dev = mdev->dev;
 536         struct mlx4_mac_entry *entry;
 537         int index = 0;
 538         int err = 0;
 539         u64 reg_id;
 540         int *qpn = &priv->base_qpn;
 541         u64 mac = mlx4_mac_to_u64(IF_LLADDR(priv->dev));
 542
 543         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 544                IF_LLADDR(priv->dev));
 545         index = mlx4_register_mac(dev, priv->port, mac);
 546         if (index < 0) {
 547                 err = index;
 548                 en_err(priv, "Failed adding MAC: %pM\n",
 549                        IF_LLADDR(priv->dev));
 550                 return err;
 551         }
 552
 553         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 554                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 555                 *qpn = base_qpn + index;
 556                 return 0;
 557         }
 558
 559         err = mlx4_qp_reserve_range(dev, 1, 1, qpn, 0);
 560         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 561         if (err) {
 562                 en_err(priv, "Failed to reserve qp for mac registration\n");
 563                 goto qp_err;
 564         }
 565
 566         err = mlx4_en_uc_steer_add(priv, IF_LLADDR(priv->dev), qpn, &reg_id);
 567         if (err)
 568                 goto steer_err;
 569
 570         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
 571         if (!entry) {
 572                 err = -ENOMEM;
 573                 goto alloc_err;
 574         }
 575         memcpy(entry->mac, IF_LLADDR(priv->dev), sizeof(entry->mac));
 576         entry->reg_id = reg_id;
 577
 578         hlist_add_head(&entry->hlist,
 579                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
 580
 581         return 0;
 582
 583 alloc_err:
 584         mlx4_en_uc_steer_release(priv, IF_LLADDR(priv->dev), *qpn, reg_id);
 585
 586 steer_err:
 587         mlx4_qp_release_range(dev, *qpn, 1);
 588
 589 qp_err:
 590         mlx4_unregister_mac(dev, priv->port, mac);
 591         return err;
 592 }
 593
 594 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 595 {
 596         struct mlx4_en_dev *mdev = priv->mdev;
 597         struct mlx4_dev *dev = mdev->dev;
 598         int qpn = priv->base_qpn;
 599         u64 mac;
 600
 601         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 602                 mac = mlx4_mac_to_u64(IF_LLADDR(priv->dev));
 603                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 604                        IF_LLADDR(priv->dev));
 605                 mlx4_unregister_mac(dev, priv->port, mac);
 606         } else {
 607                 struct mlx4_mac_entry *entry;
 608                 struct hlist_node *tmp;
 609                 struct hlist_head *bucket;
 610                 unsigned int i;
 611
 612                 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
 613                         bucket = &priv->mac_hash[i];
 614                         hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 615                                 mac = mlx4_mac_to_u64(entry->mac);
 616                                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 617                                        entry->mac);
 618                                 mlx4_en_uc_steer_release(priv, entry->mac,
 619                                                          qpn, entry->reg_id);
 620
 621                                 mlx4_unregister_mac(dev, priv->port, mac);
 622                                 hlist_del(&entry->hlist);
 623                                 kfree(entry);
 624                         }
 625                 }
 626
 627                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 628                        priv->port, qpn);
 629                 mlx4_qp_release_range(dev, qpn, 1);
 630                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 631         }
 632 }
 633
 634 static void mlx4_en_clear_list(struct net_device *dev)
 635 {
 636         struct mlx4_en_priv *priv = netdev_priv(dev);
 637         struct mlx4_en_mc_list *tmp, *mc_to_del;
 638
 639         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 640                 list_del(&mc_to_del->list);
 641                 kfree(mc_to_del);
 642         }
 643 }
 644
 645 static void mlx4_en_cache_mclist(struct net_device *dev)
 646 {
 647         struct ifmultiaddr *ifma;
 648         struct mlx4_en_mc_list *tmp;
 649         struct mlx4_en_priv *priv = netdev_priv(dev);
 650
 651         if_maddr_rlock(dev);
 652         TAILQ_FOREACH(ifma, &dev->if_multiaddrs, ifma_link) {
 653                 if (ifma->ifma_addr->sa_family != AF_LINK)
 654                         continue;
 655                 if (((struct sockaddr_dl *)ifma->ifma_addr)->sdl_alen !=
 656                                 ETHER_ADDR_LEN)
 657                         continue;
 658                 /* Make sure the list didn't grow. */
 659                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 660                 if (tmp == NULL) {
 661                         en_err(priv, "Failed to allocate multicast list\n");
 662                         break;
 663                 }
 664                 memcpy(tmp->addr,
 665                         LLADDR((struct sockaddr_dl *)ifma->ifma_addr), ETH_ALEN);
 666                 list_add_tail(&tmp->list, &priv->mc_list);
 667         }
 668         if_maddr_runlock(dev);
 669 }
 670
 671 static void update_mclist_flags(struct mlx4_en_priv *priv,
 672                                 struct list_head *dst,
 673                                 struct list_head *src)
 674 {
 675         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 676         bool found;
 677
 678         /* Find all the entries that should be removed from dst,
 679          * These are the entries that are not found in src
 680          */
 681         list_for_each_entry(dst_tmp, dst, list) {
 682                 found = false;
 683                 list_for_each_entry(src_tmp, src, list) {
 684                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 685                                 found = true;
 686                                 break;
 687                         }
 688                 }
 689                 if (!found)
 690                         dst_tmp->action = MCLIST_REM;
 691         }
 692
 693         /* Add entries that exist in src but not in dst
 694          * mark them as need to add
 695          */
 696         list_for_each_entry(src_tmp, src, list) {
 697                 found = false;
 698                 list_for_each_entry(dst_tmp, dst, list) {
 699                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 700                                 dst_tmp->action = MCLIST_NONE;
 701                                 found = true;
 702                                 break;
 703                         }
 704                 }
 705                 if (!found) {
 706                         new_mc = kmalloc(sizeof(struct mlx4_en_mc_list),
 707                                          GFP_KERNEL);
 708                         if (!new_mc) {
 709                                 en_err(priv, "Failed to allocate current multicast list\n");
 710                                 return;
 711                         }
 712                         memcpy(new_mc, src_tmp,
 713                                sizeof(struct mlx4_en_mc_list));
 714                         new_mc->action = MCLIST_ADD;
 715                         list_add_tail(&new_mc->list, dst);
 716                 }
 717         }
 718 }
 719
 720 static void mlx4_en_set_rx_mode(struct net_device *dev)
 721 {
 722         struct mlx4_en_priv *priv = netdev_priv(dev);
 723
 724         if (!priv->port_up)
 725                 return;
 726
 727         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 728 }
 729
 730 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 731                                      struct mlx4_en_dev *mdev)
 732 {
 733         int err = 0;
 734         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 735                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 736
 737                 /* Enable promiscouos mode */
 738                 switch (mdev->dev->caps.steering_mode) {
 739                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 740                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 741                                                           priv->port,
 742                                                           priv->base_qpn,
 743                                                           MLX4_FS_ALL_DEFAULT);
 744                         if (err)
 745                                 en_err(priv, "Failed enabling promiscuous mode\n");
 746                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 747                         break;
 748
 749                 case MLX4_STEERING_MODE_B0:
 750                         err = mlx4_unicast_promisc_add(mdev->dev,
 751                                                        priv->base_qpn,
 752                                                        priv->port);
 753                         if (err)
 754                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 755
 756                         /* Add the default qp number as multicast
 757                          * promisc
 758                          */
 759                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 760                                 err = mlx4_multicast_promisc_add(mdev->dev,
 761                                                                  priv->base_qpn,
 762                                                                  priv->port);
 763                                 if (err)
 764                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 765                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 766                         }
 767                         break;
 768
 769                 case MLX4_STEERING_MODE_A0:
 770                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 771                                                      priv->port,
 772                                                      priv->base_qpn,
 773                                                      1);
 774                         if (err)
 775                                 en_err(priv, "Failed enabling promiscuous mode\n");
 776                         break;
 777                 }
 778
 779                 /* Disable port multicast filter (unconditionally) */
 780                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 781                                           0, MLX4_MCAST_DISABLE);
 782                 if (err)
 783                         en_err(priv, "Failed disabling multicast filter\n");
 784         }
 785 }
 786
 787 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 788                                        struct mlx4_en_dev *mdev)
 789 {
 790         int err = 0;
 791
 792         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 793
 794         /* Disable promiscouos mode */
 795         switch (mdev->dev->caps.steering_mode) {
 796         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 797                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 798                                                      priv->port,
 799                                                      MLX4_FS_ALL_DEFAULT);
 800                 if (err)
 801                         en_err(priv, "Failed disabling promiscuous mode\n");
 802                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 803                 break;
 804
 805         case MLX4_STEERING_MODE_B0:
 806                 err = mlx4_unicast_promisc_remove(mdev->dev,
 807                                                   priv->base_qpn,
 808                                                   priv->port);
 809                 if (err)
 810                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 811                 /* Disable Multicast promisc */
 812                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 813                         err = mlx4_multicast_promisc_remove(mdev->dev,
 814                                                             priv->base_qpn,
 815                                                             priv->port);
 816                         if (err)
 817                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 818                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 819                 }
 820                 break;
 821
 822         case MLX4_STEERING_MODE_A0:
 823                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 824                                              priv->port,
 825                                              priv->base_qpn, 0);
 826                 if (err)
 827                         en_err(priv, "Failed disabling promiscuous mode\n");
 828                 break;
 829         }
 830 }
 831
 832 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 833                                  struct net_device *dev,
 834                                  struct mlx4_en_dev *mdev)
 835 {
 836         struct mlx4_en_mc_list *mclist, *tmp;
 837         u8 mc_list[16] = {0};
 838         int err = 0;
 839         u64 mcast_addr = 0;
 840
 841
 842         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 843         if (dev->if_flags & IFF_ALLMULTI) {
 844                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 845                                           0, MLX4_MCAST_DISABLE);
 846                 if (err)
 847                         en_err(priv, "Failed disabling multicast filter\n");
 848
 849                 /* Add the default qp number as multicast promisc */
 850                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 851                         switch (mdev->dev->caps.steering_mode) {
 852                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 853                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
 854                                                                   priv->port,
 855                                                                   priv->base_qpn,
 856                                                                   MLX4_FS_MC_DEFAULT);
 857                                 break;
 858
 859                         case MLX4_STEERING_MODE_B0:
 860                                 err = mlx4_multicast_promisc_add(mdev->dev,
 861                                                                  priv->base_qpn,
 862                                                                  priv->port);
 863                                 break;
 864
 865                         case MLX4_STEERING_MODE_A0:
 866                                 break;
 867                         }
 868                         if (err)
 869                                 en_err(priv, "Failed entering multicast promisc mode\n");
 870                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 871                 }
 872         } else {
 873                 /* Disable Multicast promisc */
 874                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 875                         switch (mdev->dev->caps.steering_mode) {
 876                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 877                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 878                                                                      priv->port,
 879                                                                      MLX4_FS_MC_DEFAULT);
 880                                 break;
 881
 882                         case MLX4_STEERING_MODE_B0:
 883                                 err = mlx4_multicast_promisc_remove(mdev->dev,
 884                                                                     priv->base_qpn,
 885                                                                     priv->port);
 886                                 break;
 887
 888                         case MLX4_STEERING_MODE_A0:
 889                                 break;
 890                         }
 891                         if (err)
 892                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 893                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 894                 }
 895
 896                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 897                                           0, MLX4_MCAST_DISABLE);
 898                 if (err)
 899                         en_err(priv, "Failed disabling multicast filter\n");
 900
 901                 /* Flush mcast filter and init it with broadcast address */
 902                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
 903                                     1, MLX4_MCAST_CONFIG);
 904
 905                 /* Update multicast list - we cache all addresses so they won't
 906                  * change while HW is updated holding the command semaphor */
 907                 mlx4_en_cache_mclist(dev);
 908                 list_for_each_entry(mclist, &priv->mc_list, list) {
 909                         mcast_addr = mlx4_mac_to_u64(mclist->addr);
 910                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
 911                                         mcast_addr, 0, MLX4_MCAST_CONFIG);
 912                 }
 913                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 914                                           0, MLX4_MCAST_ENABLE);
 915                 if (err)
 916                         en_err(priv, "Failed enabling multicast filter\n");
 917
 918                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
 919                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
 920                         if (mclist->action == MCLIST_REM) {
 921                                 /* detach this address and delete from list */
 922                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
 923                                 mc_list[5] = priv->port;
 924                                 err = mlx4_multicast_detach(mdev->dev,
 925                                                             &priv->rss_map.indir_qp,
 926                                                             mc_list,
 927                                                             MLX4_PROT_ETH,
 928                                                             mclist->reg_id);
 929                                 if (err)
 930                                         en_err(priv, "Fail to detach multicast address\n");
 931
 932                                 /* remove from list */
 933                                 list_del(&mclist->list);
 934                                 kfree(mclist);
 935                         } else if (mclist->action == MCLIST_ADD) {
 936                                 /* attach the address */
 937                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
 938                                 /* needed for B0 steering support */
 939                                 mc_list[5] = priv->port;
 940                                 err = mlx4_multicast_attach(mdev->dev,
 941                                                             &priv->rss_map.indir_qp,
 942                                                             mc_list,
 943                                                             priv->port, 0,
 944                                                             MLX4_PROT_ETH,
 945                                                             &mclist->reg_id);
 946                                 if (err)
 947                                         en_err(priv, "Fail to attach multicast address\n");
 948
 949                         }
 950                 }
 951         }
 952 }
 953
 954 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
 955 {
 956         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
 957                                                  rx_mode_task);
 958         struct mlx4_en_dev *mdev = priv->mdev;
 959         struct net_device *dev = priv->dev;
 960
 961
 962         mutex_lock(&mdev->state_lock);
 963         if (!mdev->device_up) {
 964                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
 965                 goto out;
 966         }
 967         if (!priv->port_up) {
 968                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
 969                 goto out;
 970         }
 971         if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
 972                 if (priv->port_state.link_state) {
 973                         priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
 974                         /* update netif baudrate */
 975                         priv->dev->if_baudrate =
 976                             IF_Mbps(priv->port_state.link_speed);
 977                         /* Important note: the following call for if_link_state_change
 978                          * is needed for interface up scenario (start port, link state
 979                          * change) */
 980                         if_link_state_change(priv->dev, LINK_STATE_UP);
 981                         en_dbg(HW, priv, "Link Up\n");
 982                 }
 983         }
 984
 985         /* Promsicuous mode: disable all filters */
 986         if ((dev->if_flags & IFF_PROMISC) ||
 987             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
 988                 mlx4_en_set_promisc_mode(priv, mdev);
 989                 goto out;
 990         }
 991
 992         /* Not in promiscuous mode */
 993         if (priv->flags & MLX4_EN_FLAG_PROMISC)
 994                 mlx4_en_clear_promisc_mode(priv, mdev);
 995
 996         mlx4_en_do_multicast(priv, dev, mdev);
 997 out:
 998         mutex_unlock(&mdev->state_lock);
 999 }
1000
1001 #ifdef CONFIG_NET_POLL_CONTROLLER
1002 static void mlx4_en_netpoll(struct net_device *dev)
1003 {
1004         struct mlx4_en_priv *priv = netdev_priv(dev);
1005         struct mlx4_en_cq *cq;
1006         unsigned long flags;
1007         int i;
1008
1009         for (i = 0; i < priv->rx_ring_num; i++) {
1010                 cq = priv->rx_cq[i];
1011                 spin_lock_irqsave(&cq->lock, flags);
1012                 napi_synchronize(&cq->napi);
1013                 mlx4_en_process_rx_cq(dev, cq, 0);
1014                 spin_unlock_irqrestore(&cq->lock, flags);
1015         }
1016 }
1017 #endif
1018
1019 static void mlx4_en_watchdog_timeout(void *arg)
1020 {
1021         struct mlx4_en_priv *priv = arg;
1022         struct mlx4_en_dev *mdev = priv->mdev;
1023
1024         en_dbg(DRV, priv, "Scheduling watchdog\n");
1025         queue_work(mdev->workqueue, &priv->watchdog_task);
1026         if (priv->port_up)
1027                 callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
1028                                 mlx4_en_watchdog_timeout, priv);
1029 }
1030
1031
1032
1033 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1034 {
1035         struct mlx4_en_cq *cq;
1036         int i;
1037
1038         /* If we haven't received a specific coalescing setting
1039          * (module param), we set the moderation parameters as follows:
1040          * - moder_cnt is set to the number of mtu sized packets to
1041          *   satisfy our coelsing target.
1042          * - moder_time is set to a fixed value.
1043          */
1044         priv->rx_frames = MLX4_EN_RX_COAL_TARGET / priv->dev->if_mtu + 1;
1045         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1046         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1047         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1048         en_dbg(INTR, priv, "Default coalesing params for mtu: %u - "
1049                "rx_frames:%d rx_usecs:%d\n",
1050                (unsigned)priv->dev->if_mtu, priv->rx_frames, priv->rx_usecs);
1051
1052         /* Setup cq moderation params */
1053         for (i = 0; i < priv->rx_ring_num; i++) {
1054                 cq = priv->rx_cq[i];
1055                 cq->moder_cnt = priv->rx_frames;
1056                 cq->moder_time = priv->rx_usecs;
1057                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1058                 priv->last_moder_packets[i] = 0;
1059                 priv->last_moder_bytes[i] = 0;
1060         }
1061
1062         for (i = 0; i < priv->tx_ring_num; i++) {
1063                 cq = priv->tx_cq[i];
1064                 cq->moder_cnt = priv->tx_frames;
1065                 cq->moder_time = priv->tx_usecs;
1066         }
1067
1068         /* Reset auto-moderation params */
1069         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1070         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1071         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1072         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1073         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1074         priv->adaptive_rx_coal = 1;
1075         priv->last_moder_jiffies = 0;
1076         priv->last_moder_tx_packets = 0;
1077 }
1078
1079 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1080 {
1081         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1082         struct mlx4_en_cq *cq;
1083         unsigned long packets;
1084         unsigned long rate;
1085         unsigned long avg_pkt_size;
1086         unsigned long rx_packets;
1087         unsigned long rx_bytes;
1088         unsigned long rx_pkt_diff;
1089         int moder_time;
1090         int ring, err;
1091
1092         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1093                 return;
1094
1095         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1096                 spin_lock(&priv->stats_lock);
1097                 rx_packets = priv->rx_ring[ring]->packets;
1098                 rx_bytes = priv->rx_ring[ring]->bytes;
1099                 spin_unlock(&priv->stats_lock);
1100
1101                 rx_pkt_diff = ((unsigned long) (rx_packets -
1102                                 priv->last_moder_packets[ring]));
1103                 packets = rx_pkt_diff;
1104                 rate = packets * HZ / period;
1105                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1106                                 priv->last_moder_bytes[ring])) / packets : 0;
1107
1108                 /* Apply auto-moderation only when packet rate
1109                  * exceeds a rate that it matters */
1110                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1111                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1112                         if (rate < priv->pkt_rate_low)
1113                                 moder_time = priv->rx_usecs_low;
1114                         else if (rate > priv->pkt_rate_high)
1115                                 moder_time = priv->rx_usecs_high;
1116                         else
1117                                 moder_time = (rate - priv->pkt_rate_low) *
1118                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1119                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
1120                                         priv->rx_usecs_low;
1121                 } else {
1122                         moder_time = priv->rx_usecs_low;
1123                 }
1124
1125                 if (moder_time != priv->last_moder_time[ring]) {
1126                         priv->last_moder_time[ring] = moder_time;
1127                         cq = priv->rx_cq[ring];
1128                         cq->moder_time = moder_time;
1129                         err = mlx4_en_set_cq_moder(priv, cq);
1130                         if (err)
1131                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1132                                        ring);
1133                 }
1134                 priv->last_moder_packets[ring] = rx_packets;
1135                 priv->last_moder_bytes[ring] = rx_bytes;
1136         }
1137
1138         priv->last_moder_jiffies = jiffies;
1139 }
1140
1141 static void mlx4_en_do_get_stats(struct work_struct *work)
1142 {
1143         struct delayed_work *delay = to_delayed_work(work);
1144         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1145                                                  stats_task);
1146         struct mlx4_en_dev *mdev = priv->mdev;
1147         int err;
1148
1149         mutex_lock(&mdev->state_lock);
1150         if (mdev->device_up) {
1151                 if (priv->port_up) {
1152                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1153                         if (err)
1154                                 en_dbg(HW, priv, "Could not update stats\n");
1155
1156                         mlx4_en_auto_moderation(priv);
1157                 }
1158
1159                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1160         }
1161         mutex_unlock(&mdev->state_lock);
1162 }
1163
1164 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1165  * periodically
1166  */
1167 static void mlx4_en_service_task(struct work_struct *work)
1168 {
1169         struct delayed_work *delay = to_delayed_work(work);
1170         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1171                                                  service_task);
1172         struct mlx4_en_dev *mdev = priv->mdev;
1173
1174         mutex_lock(&mdev->state_lock);
1175         if (mdev->device_up) {
1176                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1177                                    SERVICE_TASK_DELAY);
1178         }
1179         mutex_unlock(&mdev->state_lock);
1180 }
1181
1182 static void mlx4_en_linkstate(struct work_struct *work)
1183 {
1184         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1185                                                  linkstate_task);
1186         struct mlx4_en_dev *mdev = priv->mdev;
1187         int linkstate = priv->link_state;
1188
1189         mutex_lock(&mdev->state_lock);
1190         /* If observable port state changed set carrier state and
1191          * report to system log */
1192         if (priv->last_link_state != linkstate) {
1193                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1194                         en_info(priv, "Link Down\n");
1195                         if_link_state_change(priv->dev, LINK_STATE_DOWN);
1196                         /* update netif baudrate */
1197                         priv->dev->if_baudrate = 0;
1198
1199                 /* make sure the port is up before notifying the OS.
1200                  * This is tricky since we get here on INIT_PORT and
1201                  * in such case we can't tell the OS the port is up.
1202                  * To solve this there is a call to if_link_state_change
1203                  * in set_rx_mode.
1204                  * */
1205                 } else if (priv->port_up && (linkstate == MLX4_DEV_EVENT_PORT_UP)){
1206                         if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
1207                                 en_info(priv, "Query port failed\n");
1208                         priv->dev->if_baudrate =
1209                             IF_Mbps(priv->port_state.link_speed);
1210                         en_info(priv, "Link Up\n");
1211                         if_link_state_change(priv->dev, LINK_STATE_UP);
1212                 }
1213         }
1214         priv->last_link_state = linkstate;
1215         mutex_unlock(&mdev->state_lock);
1216 }
1217
1218
1219 int mlx4_en_start_port(struct net_device *dev)
1220 {
1221         struct mlx4_en_priv *priv = netdev_priv(dev);
1222         struct mlx4_en_dev *mdev = priv->mdev;
1223         struct mlx4_en_cq *cq;
1224         struct mlx4_en_tx_ring *tx_ring;
1225         int rx_index = 0;
1226         int tx_index = 0;
1227         int err = 0;
1228         int i;
1229         int j;
1230         u8 mc_list[16] = {0};
1231
1232
1233         if (priv->port_up) {
1234                 en_dbg(DRV, priv, "start port called while port already up\n");
1235                 return 0;
1236         }
1237
1238         INIT_LIST_HEAD(&priv->mc_list);
1239         INIT_LIST_HEAD(&priv->curr_list);
1240         INIT_LIST_HEAD(&priv->ethtool_list);
1241
1242         /* Calculate Rx buf size */
1243         dev->if_mtu = min(dev->if_mtu, priv->max_mtu);
1244         mlx4_en_calc_rx_buf(dev);
1245         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_mb_size);
1246
1247         /* Configure rx cq's and rings */
1248         err = mlx4_en_activate_rx_rings(priv);
1249         if (err) {
1250                 en_err(priv, "Failed to activate RX rings\n");
1251                 return err;
1252         }
1253         for (i = 0; i < priv->rx_ring_num; i++) {
1254                 cq = priv->rx_cq[i];
1255
1256                 mlx4_en_cq_init_lock(cq);
1257                 err = mlx4_en_activate_cq(priv, cq, i);
1258                 if (err) {
1259                         en_err(priv, "Failed activating Rx CQ\n");
1260                         goto cq_err;
1261                 }
1262                 for (j = 0; j < cq->size; j++)
1263                         cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1264                 err = mlx4_en_set_cq_moder(priv, cq);
1265                 if (err) {
1266                         en_err(priv, "Failed setting cq moderation parameters");
1267                         mlx4_en_deactivate_cq(priv, cq);
1268                         goto cq_err;
1269                 }
1270                 mlx4_en_arm_cq(priv, cq);
1271                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1272                 ++rx_index;
1273         }
1274
1275         /* Set qp number */
1276         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1277         err = mlx4_en_get_qp(priv);
1278         if (err) {
1279                 en_err(priv, "Failed getting eth qp\n");
1280                 goto cq_err;
1281         }
1282         mdev->mac_removed[priv->port] = 0;
1283
1284         /* gets default allocated counter index from func cap */
1285         /* or sink counter index if no resources */
1286         priv->counter_index = mdev->dev->caps.def_counter_index[priv->port - 1];
1287
1288         en_dbg(DRV, priv, "%s: default counter index %d for port %d\n",
1289                __func__, priv->counter_index, priv->port);
1290
1291         err = mlx4_en_config_rss_steer(priv);
1292         if (err) {
1293                 en_err(priv, "Failed configuring rss steering\n");
1294                 goto mac_err;
1295         }
1296
1297         err = mlx4_en_create_drop_qp(priv);
1298         if (err)
1299                 goto rss_err;
1300
1301         /* Configure tx cq's and rings */
1302         for (i = 0; i < priv->tx_ring_num; i++) {
1303                 /* Configure cq */
1304                 cq = priv->tx_cq[i];
1305                 err = mlx4_en_activate_cq(priv, cq, i);
1306                 if (err) {
1307                         en_err(priv, "Failed activating Tx CQ\n");
1308                         goto tx_err;
1309                 }
1310                 err = mlx4_en_set_cq_moder(priv, cq);
1311                 if (err) {
1312                         en_err(priv, "Failed setting cq moderation parameters");
1313                         mlx4_en_deactivate_cq(priv, cq);
1314                         goto tx_err;
1315                 }
1316                 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1317                 cq->buf->wqe_index = cpu_to_be16(0xffff);
1318
1319                 /* Configure ring */
1320                 tx_ring = priv->tx_ring[i];
1321
1322                 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1323                                                i / priv->num_tx_rings_p_up);
1324                 if (err) {
1325                         en_err(priv, "Failed activating Tx ring %d\n", i);
1326                         mlx4_en_deactivate_cq(priv, cq);
1327                         goto tx_err;
1328                 }
1329
1330                 /* Arm CQ for TX completions */
1331                 mlx4_en_arm_cq(priv, cq);
1332
1333                 /* Set initial ownership of all Tx TXBBs to SW (1) */
1334                 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1335                         *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1336                 ++tx_index;
1337         }
1338
1339         /* Configure port */
1340         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1341                                     priv->rx_mb_size,
1342                                     priv->prof->tx_pause,
1343                                     priv->prof->tx_ppp,
1344                                     priv->prof->rx_pause,
1345                                     priv->prof->rx_ppp);
1346         if (err) {
1347                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1348                        priv->port, err);
1349                 goto tx_err;
1350         }
1351         /* Set default qp number */
1352         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1353         if (err) {
1354                 en_err(priv, "Failed setting default qp numbers\n");
1355                 goto tx_err;
1356         }
1357
1358         /* Init port */
1359         en_dbg(HW, priv, "Initializing port\n");
1360         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1361         if (err) {
1362                 en_err(priv, "Failed Initializing port\n");
1363                 goto tx_err;
1364         }
1365
1366         /* Attach rx QP to bradcast address */
1367         memset(&mc_list[10], 0xff, ETH_ALEN);
1368         mc_list[5] = priv->port; /* needed for B0 steering support */
1369         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1370                                   priv->port, 0, MLX4_PROT_ETH,
1371                                   &priv->broadcast_id))
1372                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1373
1374         /* Must redo promiscuous mode setup. */
1375         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1376
1377         /* Schedule multicast task to populate multicast list */
1378         queue_work(mdev->workqueue, &priv->rx_mode_task);
1379
1380         priv->port_up = true;
1381
1382         /* Enable the queues. */
1383         dev->if_drv_flags &= ~IFF_DRV_OACTIVE;
1384         dev->if_drv_flags |= IFF_DRV_RUNNING;
1385 #ifdef CONFIG_DEBUG_FS
1386         mlx4_en_create_debug_files(priv);
1387 #endif
1388         callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
1389                     mlx4_en_watchdog_timeout, priv);
1390
1391
1392         return 0;
1393
1394 tx_err:
1395         while (tx_index--) {
1396                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1397                 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1398         }
1399         mlx4_en_destroy_drop_qp(priv);
1400 rss_err:
1401         mlx4_en_release_rss_steer(priv);
1402 mac_err:
1403         mlx4_en_put_qp(priv);
1404 cq_err:
1405         while (rx_index--)
1406                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1407         for (i = 0; i < priv->rx_ring_num; i++)
1408                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1409
1410         return err; /* need to close devices */
1411 }
1412
1413
1414 void mlx4_en_stop_port(struct net_device *dev)
1415 {
1416         struct mlx4_en_priv *priv = netdev_priv(dev);
1417         struct mlx4_en_dev *mdev = priv->mdev;
1418         struct mlx4_en_mc_list *mclist, *tmp;
1419         int i;
1420         u8 mc_list[16] = {0};
1421
1422         if (!priv->port_up) {
1423                 en_dbg(DRV, priv, "stop port called while port already down\n");
1424                 return;
1425         }
1426
1427 #ifdef CONFIG_DEBUG_FS
1428         mlx4_en_delete_debug_files(priv);
1429 #endif
1430
1431         /* close port*/
1432         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1433
1434         /* Set port as not active */
1435         priv->port_up = false;
1436         if (priv->counter_index != 0xff) {
1437                 mlx4_counter_free(mdev->dev, priv->port, priv->counter_index);
1438                 priv->counter_index = 0xff;
1439         }
1440
1441         /* Promsicuous mode */
1442         if (mdev->dev->caps.steering_mode ==
1443             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1444                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1445                                  MLX4_EN_FLAG_MC_PROMISC);
1446                 mlx4_flow_steer_promisc_remove(mdev->dev,
1447                                                priv->port,
1448                                                MLX4_FS_ALL_DEFAULT);
1449                 mlx4_flow_steer_promisc_remove(mdev->dev,
1450                                                priv->port,
1451                                                MLX4_FS_MC_DEFAULT);
1452         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1453                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1454
1455                 /* Disable promiscouos mode */
1456                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1457                                             priv->port);
1458
1459                 /* Disable Multicast promisc */
1460                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1461                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1462                                                       priv->port);
1463                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1464                 }
1465         }
1466
1467         /* Detach All multicasts */
1468         memset(&mc_list[10], 0xff, ETH_ALEN);
1469         mc_list[5] = priv->port; /* needed for B0 steering support */
1470         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1471                               MLX4_PROT_ETH, priv->broadcast_id);
1472         list_for_each_entry(mclist, &priv->curr_list, list) {
1473                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1474                 mc_list[5] = priv->port;
1475                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1476                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1477         }
1478         mlx4_en_clear_list(dev);
1479         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1480                 list_del(&mclist->list);
1481                 kfree(mclist);
1482         }
1483
1484         /* Flush multicast filter */
1485         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1486         mlx4_en_destroy_drop_qp(priv);
1487
1488         /* Free TX Rings */
1489         for (i = 0; i < priv->tx_ring_num; i++) {
1490                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1491                 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1492         }
1493         msleep(10);
1494
1495         for (i = 0; i < priv->tx_ring_num; i++)
1496                 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1497
1498         /* Free RSS qps */
1499         mlx4_en_release_rss_steer(priv);
1500
1501         /* Unregister Mac address for the port */
1502         mlx4_en_put_qp(priv);
1503         mdev->mac_removed[priv->port] = 1;
1504
1505         /* Free RX Rings */
1506         for (i = 0; i < priv->rx_ring_num; i++) {
1507                 struct mlx4_en_cq *cq = priv->rx_cq[i];
1508                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1509                 mlx4_en_deactivate_cq(priv, cq);
1510         }
1511
1512         callout_stop(&priv->watchdog_timer);
1513
1514         dev->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1515 }
1516
1517 static void mlx4_en_restart(struct work_struct *work)
1518 {
1519         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1520                                                  watchdog_task);
1521         struct mlx4_en_dev *mdev = priv->mdev;
1522         struct net_device *dev = priv->dev;
1523         struct mlx4_en_tx_ring *ring;
1524         int i;
1525
1526
1527         if (priv->blocked == 0 || priv->port_up == 0)
1528                 return;
1529         for (i = 0; i < priv->tx_ring_num; i++) {
1530                 ring = priv->tx_ring[i];
1531                 if (ring->blocked &&
1532                                 ring->watchdog_time + MLX4_EN_WATCHDOG_TIMEOUT < ticks)
1533                         goto reset;
1534         }
1535         return;
1536
1537 reset:
1538         priv->port_stats.tx_timeout++;
1539         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1540
1541         mutex_lock(&mdev->state_lock);
1542         if (priv->port_up) {
1543                 mlx4_en_stop_port(dev);
1544                 //for (i = 0; i < priv->tx_ring_num; i++)
1545                 //        netdev_tx_reset_queue(priv->tx_ring[i]->tx_queue);
1546                 if (mlx4_en_start_port(dev))
1547                         en_err(priv, "Failed restarting port %d\n", priv->port);
1548         }
1549         mutex_unlock(&mdev->state_lock);
1550 }
1551
1552 static void mlx4_en_clear_stats(struct net_device *dev)
1553 {
1554         struct mlx4_en_priv *priv = netdev_priv(dev);
1555         struct mlx4_en_dev *mdev = priv->mdev;
1556         int i;
1557
1558         if (!mlx4_is_slave(mdev->dev))
1559                 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1560                         en_dbg(HW, priv, "Failed dumping statistics\n");
1561
1562         memset(&priv->pstats, 0, sizeof(priv->pstats));
1563         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1564         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1565         memset(&priv->vport_stats, 0, sizeof(priv->vport_stats));
1566
1567         for (i = 0; i < priv->tx_ring_num; i++) {
1568                 priv->tx_ring[i]->bytes = 0;
1569                 priv->tx_ring[i]->packets = 0;
1570                 priv->tx_ring[i]->tx_csum = 0;
1571                 priv->tx_ring[i]->oversized_packets = 0;
1572         }
1573         for (i = 0; i < priv->rx_ring_num; i++) {
1574                 priv->rx_ring[i]->bytes = 0;
1575                 priv->rx_ring[i]->packets = 0;
1576                 priv->rx_ring[i]->csum_ok = 0;
1577                 priv->rx_ring[i]->csum_none = 0;
1578         }
1579 }
1580
1581 static void mlx4_en_open(void* arg)
1582 {
1583
1584         struct mlx4_en_priv *priv;
1585         struct mlx4_en_dev *mdev;
1586         struct net_device *dev;
1587         int err = 0;
1588
1589         priv = arg;
1590         mdev = priv->mdev;
1591         dev = priv->dev;
1592
1593
1594         mutex_lock(&mdev->state_lock);
1595
1596         if (!mdev->device_up) {
1597                 en_err(priv, "Cannot open - device down/disabled\n");
1598                 goto out;
1599         }
1600
1601         /* Reset HW statistics and SW counters */
1602         mlx4_en_clear_stats(dev);
1603
1604         err = mlx4_en_start_port(dev);
1605         if (err)
1606                 en_err(priv, "Failed starting port:%d\n", priv->port);
1607
1608 out:
1609         mutex_unlock(&mdev->state_lock);
1610         return;
1611 }
1612
1613 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1614 {
1615         int i;
1616
1617 #ifdef CONFIG_RFS_ACCEL
1618         if (priv->dev->rx_cpu_rmap) {
1619                 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1620                 priv->dev->rx_cpu_rmap = NULL;
1621         }
1622 #endif
1623
1624         for (i = 0; i < priv->tx_ring_num; i++) {
1625                 if (priv->tx_ring && priv->tx_ring[i])
1626                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1627                 if (priv->tx_cq && priv->tx_cq[i])
1628                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1629         }
1630
1631         for (i = 0; i < priv->rx_ring_num; i++) {
1632                 if (priv->rx_ring[i])
1633                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1634                                 priv->prof->rx_ring_size, priv->stride);
1635                 if (priv->rx_cq[i])
1636                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1637         }
1638
1639         if (priv->stat_sysctl != NULL)
1640                 sysctl_ctx_free(&priv->stat_ctx);
1641 }
1642
1643 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1644 {
1645         struct mlx4_en_port_profile *prof = priv->prof;
1646         int i;
1647         int node = 0;
1648
1649         /* Create rx Rings */
1650         for (i = 0; i < priv->rx_ring_num; i++) {
1651                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
1652                                       prof->rx_ring_size, i, RX, node))
1653                         goto err;
1654
1655                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
1656                                            prof->rx_ring_size, node))
1657                         goto err;
1658         }
1659
1660         /* Create tx Rings */
1661         for (i = 0; i < priv->tx_ring_num; i++) {
1662                 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1663                                       prof->tx_ring_size, i, TX, node))
1664                         goto err;
1665
1666                 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
1667                                            prof->tx_ring_size, TXBB_SIZE, node, i))
1668                         goto err;
1669         }
1670
1671 #ifdef CONFIG_RFS_ACCEL
1672         priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->rx_ring_num);
1673         if (!priv->dev->rx_cpu_rmap)
1674                 goto err;
1675 #endif
1676         /* Re-create stat sysctls in case the number of rings changed. */
1677         mlx4_en_sysctl_stat(priv);
1678         return 0;
1679
1680 err:
1681         en_err(priv, "Failed to allocate NIC resources\n");
1682         for (i = 0; i < priv->rx_ring_num; i++) {
1683                 if (priv->rx_ring[i])
1684                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1685                                                 prof->rx_ring_size,
1686                                                 priv->stride);
1687                 if (priv->rx_cq[i])
1688                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1689         }
1690         for (i = 0; i < priv->tx_ring_num; i++) {
1691                 if (priv->tx_ring[i])
1692                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1693                 if (priv->tx_cq[i])
1694                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1695         }
1696         priv->port_up = false;
1697         return -ENOMEM;
1698 }
1699
1700 struct en_port_attribute {
1701         struct attribute attr;
1702         ssize_t (*show)(struct en_port *, struct en_port_attribute *, char *buf);
1703         ssize_t (*store)(struct en_port *, struct en_port_attribute *, char *buf, size_t count);
1704 };
1705
1706 #define PORT_ATTR_RO(_name) \
1707 struct en_port_attribute en_port_attr_##_name = __ATTR_RO(_name)
1708
1709 #define EN_PORT_ATTR(_name, _mode, _show, _store) \
1710 struct en_port_attribute en_port_attr_##_name = __ATTR(_name, _mode, _show, _store)
1711
1712 void mlx4_en_destroy_netdev(struct net_device *dev)
1713 {
1714         struct mlx4_en_priv *priv = netdev_priv(dev);
1715         struct mlx4_en_dev *mdev = priv->mdev;
1716
1717         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
1718
1719         if (priv->vlan_attach != NULL)
1720                 EVENTHANDLER_DEREGISTER(vlan_config, priv->vlan_attach);
1721         if (priv->vlan_detach != NULL)
1722                 EVENTHANDLER_DEREGISTER(vlan_unconfig, priv->vlan_detach);
1723
1724         /* Unregister device - this will close the port if it was up */
1725         if (priv->registered) {
1726                 mutex_lock(&mdev->state_lock);
1727                 ether_ifdetach(dev);
1728                 mutex_unlock(&mdev->state_lock);
1729         }
1730
1731         mutex_lock(&mdev->state_lock);
1732         mlx4_en_stop_port(dev);
1733         mutex_unlock(&mdev->state_lock);
1734
1735         if (priv->allocated)
1736                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
1737
1738         cancel_delayed_work(&priv->stats_task);
1739         cancel_delayed_work(&priv->service_task);
1740         /* flush any pending task for this netdev */
1741         flush_workqueue(mdev->workqueue);
1742         callout_drain(&priv->watchdog_timer);
1743
1744         /* Detach the netdev so tasks would not attempt to access it */
1745         mutex_lock(&mdev->state_lock);
1746         mdev->pndev[priv->port] = NULL;
1747         mutex_unlock(&mdev->state_lock);
1748
1749
1750         mlx4_en_free_resources(priv);
1751
1752         /* freeing the sysctl conf cannot be called from within mlx4_en_free_resources */
1753         if (priv->conf_sysctl != NULL)
1754                 sysctl_ctx_free(&priv->conf_ctx);
1755
1756         kfree(priv->tx_ring);
1757         kfree(priv->tx_cq);
1758
1759         kfree(priv);
1760         if_free(dev);
1761
1762 }
1763
1764 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
1765 {
1766         struct mlx4_en_priv *priv = netdev_priv(dev);
1767         struct mlx4_en_dev *mdev = priv->mdev;
1768         int err = 0;
1769
1770         en_dbg(DRV, priv, "Change MTU called - current:%u new:%u\n",
1771                (unsigned)dev->if_mtu, (unsigned)new_mtu);
1772
1773         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
1774                 en_err(priv, "Bad MTU size:%d, max %u.\n", new_mtu,
1775                     priv->max_mtu);
1776                 return -EPERM;
1777         }
1778         mutex_lock(&mdev->state_lock);
1779         dev->if_mtu = new_mtu;
1780         if (dev->if_drv_flags & IFF_DRV_RUNNING) {
1781                 if (!mdev->device_up) {
1782                         /* NIC is probably restarting - let watchdog task reset
1783                          *                          * the port */
1784                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
1785                 } else {
1786                         mlx4_en_stop_port(dev);
1787                         err = mlx4_en_start_port(dev);
1788                         if (err) {
1789                                 en_err(priv, "Failed restarting port:%d\n",
1790                                                 priv->port);
1791                                 queue_work(mdev->workqueue, &priv->watchdog_task);
1792                         }
1793                 }
1794         }
1795         mutex_unlock(&mdev->state_lock);
1796         return 0;
1797 }
1798
1799 static int mlx4_en_calc_media(struct mlx4_en_priv *priv)
1800 {
1801         int trans_type;
1802         int active;
1803
1804         active = IFM_ETHER;
1805         if (priv->last_link_state == MLX4_DEV_EVENT_PORT_DOWN)
1806                 return (active);
1807         active |= IFM_FDX;
1808         trans_type = priv->port_state.transciver;
1809         /* XXX I don't know all of the transceiver values. */
1810         switch (priv->port_state.link_speed) {
1811         case 1000:
1812                 active |= IFM_1000_T;
1813                 break;
1814         case 10000:
1815                 if (trans_type > 0 && trans_type <= 0xC)
1816                         active |= IFM_10G_SR;
1817                 else if (trans_type == 0x80 || trans_type == 0)
1818                         active |= IFM_10G_CX4;
1819                 break;
1820         case 40000:
1821                 active |= IFM_40G_CR4;
1822                 break;
1823         }
1824         if (priv->prof->tx_pause)
1825                 active |= IFM_ETH_TXPAUSE;
1826         if (priv->prof->rx_pause)
1827                 active |= IFM_ETH_RXPAUSE;
1828
1829         return (active);
1830 }
1831
1832 static void mlx4_en_media_status(struct ifnet *dev, struct ifmediareq *ifmr)
1833 {
1834         struct mlx4_en_priv *priv;
1835
1836         priv = dev->if_softc;
1837         ifmr->ifm_status = IFM_AVALID;
1838         if (priv->last_link_state != MLX4_DEV_EVENT_PORT_DOWN)
1839                 ifmr->ifm_status |= IFM_ACTIVE;
1840         ifmr->ifm_active = mlx4_en_calc_media(priv);
1841
1842         return;
1843 }
1844
1845 static int mlx4_en_media_change(struct ifnet *dev)
1846 {
1847         struct mlx4_en_priv *priv;
1848         struct ifmedia *ifm;
1849         int rxpause;
1850         int txpause;
1851         int error;
1852
1853         priv = dev->if_softc;
1854         ifm = &priv->media;
1855         rxpause = txpause = 0;
1856         error = 0;
1857
1858         if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1859                 return (EINVAL);
1860         switch (IFM_SUBTYPE(ifm->ifm_media)) {
1861         case IFM_AUTO:
1862                 break;
1863         case IFM_10G_SR:
1864         case IFM_10G_CX4:
1865         case IFM_1000_T:
1866         case IFM_40G_CR4:
1867                 if ((IFM_SUBTYPE(ifm->ifm_media)
1868                         == IFM_SUBTYPE(mlx4_en_calc_media(priv)))
1869                         && (ifm->ifm_media & IFM_FDX))
1870                         break;
1871                 /* Fallthrough */
1872         default:
1873                 printf("%s: Only auto media type\n", if_name(dev));
1874                 return (EINVAL);
1875         }
1876         /* Allow user to set/clear pause */
1877         if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_RXPAUSE)
1878                 rxpause = 1;
1879         if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_TXPAUSE)
1880                 txpause = 1;
1881         if (priv->prof->tx_pause != txpause || priv->prof->rx_pause != rxpause) {
1882                 priv->prof->tx_pause = txpause;
1883                 priv->prof->rx_pause = rxpause;
1884                 error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
1885                      priv->rx_mb_size + ETHER_CRC_LEN, priv->prof->tx_pause,
1886                      priv->prof->tx_ppp, priv->prof->rx_pause,
1887                      priv->prof->rx_ppp);
1888         }
1889         return (error);
1890 }
1891
1892 static int mlx4_en_ioctl(struct ifnet *dev, u_long command, caddr_t data)
1893 {
1894         struct mlx4_en_priv *priv;
1895         struct mlx4_en_dev *mdev;
1896         struct ifreq *ifr;
1897         int error;
1898         int mask;
1899         struct ifrsskey *ifrk;
1900         const u32 *key;
1901         struct ifrsshash *ifrh;
1902         u8 rss_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_IP_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_IP6_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                         dev->if_hwassist ^= CSUM_IP_TSO;
1981                 }
1982                 if (mask & IFCAP_TSO6) {
1983                         if (!(IFCAP_TSO6 & dev->if_capenable) &&
1984                             !(IFCAP_TXCSUM_IPV6 & dev->if_capenable)) {
1985                                 if_printf(dev, "enable txcsum6 first.\n");
1986                                 error = EAGAIN;
1987                                 goto out;
1988                         }
1989                         dev->if_capenable ^= IFCAP_TSO6;
1990                         dev->if_hwassist ^= CSUM_IP6_TSO;
1991                 }
1992                 if (mask & IFCAP_LRO)
1993                         dev->if_capenable ^= IFCAP_LRO;
1994                 if (mask & IFCAP_VLAN_HWTAGGING)
1995                         dev->if_capenable ^= IFCAP_VLAN_HWTAGGING;
1996                 if (mask & IFCAP_VLAN_HWFILTER)
1997                         dev->if_capenable ^= IFCAP_VLAN_HWFILTER;
1998                 if (mask & IFCAP_WOL_MAGIC)
1999                         dev->if_capenable ^= IFCAP_WOL_MAGIC;
2000                 if (dev->if_drv_flags & IFF_DRV_RUNNING)
2001                         mlx4_en_start_port(dev);
2002 out:
2003                 mutex_unlock(&mdev->state_lock);
2004                 VLAN_CAPABILITIES(dev);
2005                 break;
2006 #if __FreeBSD_version >= 1100036
2007         case SIOCGI2C: {
2008                 struct ifi2creq i2c;
2009
2010                 error = copyin(ifr->ifr_data, &i2c, sizeof(i2c));
2011                 if (error)
2012                         break;
2013                 if (i2c.len > sizeof(i2c.data)) {
2014                         error = EINVAL;
2015                         break;
2016                 }
2017                 /*
2018                  * Note that we ignore i2c.addr here. The driver hardcodes
2019                  * the address to 0x50, while standard expects it to be 0xA0.
2020                  */
2021                 error = mlx4_get_module_info(mdev->dev, priv->port,
2022                     i2c.offset, i2c.len, i2c.data);
2023                 if (error < 0) {
2024                         error = -error;
2025                         break;
2026                 }
2027                 error = copyout(&i2c, ifr->ifr_data, sizeof(i2c));
2028                 break;
2029         }
2030 #endif
2031         case SIOCGIFRSSKEY:
2032                 ifrk = (struct ifrsskey *)data;
2033                 ifrk->ifrk_func = RSS_FUNC_TOEPLITZ;
2034                 mutex_lock(&mdev->state_lock);
2035                 key = mlx4_en_get_rss_key(priv, &ifrk->ifrk_keylen);
2036                 if (ifrk->ifrk_keylen > RSS_KEYLEN)
2037                         error = EINVAL;
2038                 else
2039                         memcpy(ifrk->ifrk_key, key, ifrk->ifrk_keylen);
2040                 mutex_unlock(&mdev->state_lock);
2041                 break;
2042
2043         case SIOCGIFRSSHASH:
2044                 mutex_lock(&mdev->state_lock);
2045                 rss_mask = mlx4_en_get_rss_mask(priv);
2046                 mutex_unlock(&mdev->state_lock);
2047                 ifrh = (struct ifrsshash *)data;
2048                 ifrh->ifrh_func = RSS_FUNC_TOEPLITZ;
2049                 ifrh->ifrh_types = 0;
2050                 if (rss_mask & MLX4_RSS_IPV4)
2051                         ifrh->ifrh_types |= RSS_TYPE_IPV4;
2052                 if (rss_mask & MLX4_RSS_TCP_IPV4)
2053                         ifrh->ifrh_types |= RSS_TYPE_TCP_IPV4;
2054                 if (rss_mask & MLX4_RSS_IPV6)
2055                         ifrh->ifrh_types |= RSS_TYPE_IPV6;
2056                 if (rss_mask & MLX4_RSS_TCP_IPV6)
2057                         ifrh->ifrh_types |= RSS_TYPE_TCP_IPV6;
2058                 if (rss_mask & MLX4_RSS_UDP_IPV4)
2059                         ifrh->ifrh_types |= RSS_TYPE_UDP_IPV4;
2060                 if (rss_mask & MLX4_RSS_UDP_IPV6)
2061                         ifrh->ifrh_types |= RSS_TYPE_UDP_IPV6;
2062                 break;
2063
2064         default:
2065                 error = ether_ioctl(dev, command, data);
2066                 break;
2067         }
2068
2069         return (error);
2070 }
2071
2072
2073 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2074                         struct mlx4_en_port_profile *prof)
2075 {
2076         struct net_device *dev;
2077         struct mlx4_en_priv *priv;
2078         uint8_t dev_addr[ETHER_ADDR_LEN];
2079         int err;
2080         int i;
2081
2082         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
2083         dev = priv->dev = if_alloc(IFT_ETHER);
2084         if (dev == NULL) {
2085                 en_err(priv, "Net device allocation failed\n");
2086                 kfree(priv);
2087                 return -ENOMEM;
2088         }
2089         dev->if_softc = priv;
2090         if_initname(dev, "mlxen", (device_get_unit(
2091             mdev->pdev->dev.bsddev) * MLX4_MAX_PORTS) + port - 1);
2092         dev->if_mtu = ETHERMTU;
2093         dev->if_init = mlx4_en_open;
2094         dev->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
2095         dev->if_ioctl = mlx4_en_ioctl;
2096         dev->if_transmit = mlx4_en_transmit;
2097         dev->if_qflush = mlx4_en_qflush;
2098         dev->if_snd.ifq_maxlen = prof->tx_ring_size;
2099
2100         /*
2101          * Initialize driver private data
2102          */
2103         priv->counter_index = 0xff;
2104         spin_lock_init(&priv->stats_lock);
2105         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2106         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2107         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2108         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2109         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2110         callout_init(&priv->watchdog_timer, 1);
2111 #ifdef CONFIG_RFS_ACCEL
2112         INIT_LIST_HEAD(&priv->filters);
2113         spin_lock_init(&priv->filters_lock);
2114 #endif
2115
2116         priv->msg_enable = MLX4_EN_MSG_LEVEL;
2117         priv->dev = dev;
2118         priv->mdev = mdev;
2119         priv->ddev = &mdev->pdev->dev;
2120         priv->prof = prof;
2121         priv->port = port;
2122         priv->port_up = false;
2123         priv->flags = prof->flags;
2124
2125         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2126         priv->tx_ring_num = prof->tx_ring_num;
2127         priv->tx_ring = kcalloc(MAX_TX_RINGS,
2128                                 sizeof(struct mlx4_en_tx_ring *), GFP_KERNEL);
2129         if (!priv->tx_ring) {
2130                 err = -ENOMEM;
2131                 goto out;
2132         }
2133         priv->tx_cq = kcalloc(sizeof(struct mlx4_en_cq *), MAX_TX_RINGS,
2134                         GFP_KERNEL);
2135         if (!priv->tx_cq) {
2136                 err = -ENOMEM;
2137                 goto out;
2138         }
2139
2140         priv->rx_ring_num = prof->rx_ring_num;
2141         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2142         priv->mac_index = -1;
2143         priv->last_ifq_jiffies = 0;
2144         priv->if_counters_rx_errors = 0;
2145         priv->if_counters_rx_no_buffer = 0;
2146 #ifdef CONFIG_MLX4_EN_DCB
2147         if (!mlx4_is_slave(priv->mdev->dev)) {
2148                 priv->dcbx_cap = DCB_CAP_DCBX_HOST;
2149                 priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
2150                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
2151                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2152                 } else {
2153                         en_info(priv, "QoS disabled - no HW support\n");
2154                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2155                 }
2156         }
2157 #endif
2158
2159         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2160                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2161
2162         /* Query for default mac and max mtu */
2163         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2164         priv->mac = mdev->dev->caps.def_mac[priv->port];
2165         if (ILLEGAL_MAC(priv->mac)) {
2166 #if BITS_PER_LONG == 64
2167                 en_err(priv, "Port: %d, invalid mac burned: 0x%lx, quiting\n",
2168                                 priv->port, priv->mac);
2169 #elif BITS_PER_LONG == 32
2170                 en_err(priv, "Port: %d, invalid mac burned: 0x%llx, quiting\n",
2171                                 priv->port, priv->mac);
2172 #endif
2173                 err = -EINVAL;
2174                 goto out;
2175         }
2176
2177         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2178                                           DS_SIZE);
2179
2180         mlx4_en_sysctl_conf(priv);
2181
2182         err = mlx4_en_alloc_resources(priv);
2183         if (err)
2184                 goto out;
2185
2186         /* Allocate page for receive rings */
2187         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2188                                 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2189         if (err) {
2190                 en_err(priv, "Failed to allocate page for rx qps\n");
2191                 goto out;
2192         }
2193         priv->allocated = 1;
2194
2195         /*
2196          * Set driver features
2197          */
2198         dev->if_capabilities |= IFCAP_HWCSUM | IFCAP_HWCSUM_IPV6;
2199         dev->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING;
2200         dev->if_capabilities |= IFCAP_VLAN_HWCSUM | IFCAP_VLAN_HWFILTER;
2201         dev->if_capabilities |= IFCAP_LINKSTATE | IFCAP_JUMBO_MTU;
2202         dev->if_capabilities |= IFCAP_LRO;
2203         dev->if_capabilities |= IFCAP_HWSTATS;
2204
2205         if (mdev->LSO_support)
2206                 dev->if_capabilities |= IFCAP_TSO4 | IFCAP_TSO6 | IFCAP_VLAN_HWTSO;
2207
2208 #if __FreeBSD_version >= 1100000
2209         /* set TSO limits so that we don't have to drop TX packets */
2210         dev->if_hw_tsomax = MLX4_EN_TX_MAX_PAYLOAD_SIZE - (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN) /* hdr */;
2211         dev->if_hw_tsomaxsegcount = MLX4_EN_TX_MAX_MBUF_FRAGS - 1 /* hdr */;
2212         dev->if_hw_tsomaxsegsize = MLX4_EN_TX_MAX_MBUF_SIZE;
2213 #endif
2214
2215         dev->if_capenable = dev->if_capabilities;
2216
2217         dev->if_hwassist = 0;
2218         if (dev->if_capenable & (IFCAP_TSO4 | IFCAP_TSO6))
2219                 dev->if_hwassist |= CSUM_TSO;
2220         if (dev->if_capenable & IFCAP_TXCSUM)
2221                 dev->if_hwassist |= (CSUM_TCP | CSUM_UDP | CSUM_IP);
2222         if (dev->if_capenable & IFCAP_TXCSUM_IPV6)
2223                 dev->if_hwassist |= (CSUM_UDP_IPV6 | CSUM_TCP_IPV6);
2224
2225
2226         /* Register for VLAN events */
2227         priv->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
2228             mlx4_en_vlan_rx_add_vid, priv, EVENTHANDLER_PRI_FIRST);
2229         priv->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
2230             mlx4_en_vlan_rx_kill_vid, priv, EVENTHANDLER_PRI_FIRST);
2231
2232         mdev->pndev[priv->port] = dev;
2233
2234         priv->last_link_state = MLX4_DEV_EVENT_PORT_DOWN;
2235         mlx4_en_set_default_moderation(priv);
2236
2237         /* Set default MAC */
2238         for (i = 0; i < ETHER_ADDR_LEN; i++)
2239                 dev_addr[ETHER_ADDR_LEN - 1 - i] = (u8) (priv->mac >> (8 * i));
2240
2241
2242         ether_ifattach(dev, dev_addr);
2243         if_link_state_change(dev, LINK_STATE_DOWN);
2244         ifmedia_init(&priv->media, IFM_IMASK | IFM_ETH_FMASK,
2245             mlx4_en_media_change, mlx4_en_media_status);
2246         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_1000_T, 0, NULL);
2247         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_SR, 0, NULL);
2248         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_CX4, 0, NULL);
2249         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_40G_CR4, 0, NULL);
2250         ifmedia_add(&priv->media, IFM_ETHER | IFM_AUTO, 0, NULL);
2251         ifmedia_set(&priv->media, IFM_ETHER | IFM_AUTO);
2252
2253         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2254         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2255
2256         priv->registered = 1;
2257
2258         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2259         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2260
2261
2262         priv->rx_mb_size = dev->if_mtu + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN;
2263         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2264                                     priv->rx_mb_size,
2265                                     prof->tx_pause, prof->tx_ppp,
2266                                     prof->rx_pause, prof->rx_ppp);
2267         if (err) {
2268                 en_err(priv, "Failed setting port general configurations "
2269                        "for port %d, with error %d\n", priv->port, err);
2270                 goto out;
2271         }
2272
2273         /* Init port */
2274         en_warn(priv, "Initializing port\n");
2275         err = mlx4_INIT_PORT(mdev->dev, priv->port);
2276         if (err) {
2277                 en_err(priv, "Failed Initializing port\n");
2278                 goto out;
2279         }
2280
2281         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2282
2283         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2284                 queue_delayed_work(mdev->workqueue, &priv->service_task, SERVICE_TASK_DELAY);
2285
2286         return 0;
2287
2288 out:
2289         mlx4_en_destroy_netdev(dev);
2290         return err;
2291 }
2292
2293 static int mlx4_en_set_ring_size(struct net_device *dev,
2294     int rx_size, int tx_size)
2295 {
2296         struct mlx4_en_priv *priv = netdev_priv(dev);
2297         struct mlx4_en_dev *mdev = priv->mdev;
2298         int port_up = 0;
2299         int err = 0;
2300
2301         rx_size = roundup_pow_of_two(rx_size);
2302         rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE);
2303         rx_size = min_t(u32, rx_size, MLX4_EN_MAX_RX_SIZE);
2304         tx_size = roundup_pow_of_two(tx_size);
2305         tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE);
2306         tx_size = min_t(u32, tx_size, MLX4_EN_MAX_TX_SIZE);
2307
2308         if (rx_size == (priv->port_up ?
2309             priv->rx_ring[0]->actual_size : priv->rx_ring[0]->size) &&
2310             tx_size == priv->tx_ring[0]->size)
2311                 return 0;
2312         mutex_lock(&mdev->state_lock);
2313         if (priv->port_up) {
2314                 port_up = 1;
2315                 mlx4_en_stop_port(dev);
2316         }
2317         mlx4_en_free_resources(priv);
2318         priv->prof->tx_ring_size = tx_size;
2319         priv->prof->rx_ring_size = rx_size;
2320         err = mlx4_en_alloc_resources(priv);
2321         if (err) {
2322                 en_err(priv, "Failed reallocating port resources\n");
2323                 goto out;
2324         }
2325         if (port_up) {
2326                 err = mlx4_en_start_port(dev);
2327                 if (err)
2328                         en_err(priv, "Failed starting port\n");
2329         }
2330 out:
2331         mutex_unlock(&mdev->state_lock);
2332         return err;
2333 }
2334 static int mlx4_en_set_rx_ring_size(SYSCTL_HANDLER_ARGS)
2335 {
2336         struct mlx4_en_priv *priv;
2337         int size;
2338         int error;
2339
2340         priv = arg1;
2341         size = priv->prof->rx_ring_size;
2342         error = sysctl_handle_int(oidp, &size, 0, req);
2343         if (error || !req->newptr)
2344                 return (error);
2345         error = -mlx4_en_set_ring_size(priv->dev, size,
2346             priv->prof->tx_ring_size);
2347         return (error);
2348 }
2349
2350 static int mlx4_en_set_tx_ring_size(SYSCTL_HANDLER_ARGS)
2351 {
2352         struct mlx4_en_priv *priv;
2353         int size;
2354         int error;
2355
2356         priv = arg1;
2357         size = priv->prof->tx_ring_size;
2358         error = sysctl_handle_int(oidp, &size, 0, req);
2359         if (error || !req->newptr)
2360                 return (error);
2361         error = -mlx4_en_set_ring_size(priv->dev, priv->prof->rx_ring_size,
2362             size);
2363
2364         return (error);
2365 }
2366
2367 static int mlx4_en_get_module_info(struct net_device *dev,
2368                                    struct ethtool_modinfo *modinfo)
2369 {
2370         struct mlx4_en_priv *priv = netdev_priv(dev);
2371         struct mlx4_en_dev *mdev = priv->mdev;
2372         int ret;
2373         u8 data[4];
2374
2375         /* Read first 2 bytes to get Module & REV ID */
2376         ret = mlx4_get_module_info(mdev->dev, priv->port,
2377                                    0/*offset*/, 2/*size*/, data);
2378
2379         if (ret < 2) {
2380                 en_err(priv, "Failed to read eeprom module first two bytes, error: 0x%x\n", -ret);
2381                 return -EIO;
2382         }
2383
2384         switch (data[0] /* identifier */) {
2385         case MLX4_MODULE_ID_QSFP:
2386                 modinfo->type = ETH_MODULE_SFF_8436;
2387                 modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
2388                 break;
2389         case MLX4_MODULE_ID_QSFP_PLUS:
2390                 if (data[1] >= 0x3) { /* revision id */
2391                         modinfo->type = ETH_MODULE_SFF_8636;
2392                         modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
2393                 } else {
2394                         modinfo->type = ETH_MODULE_SFF_8436;
2395                         modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
2396                 }
2397                 break;
2398         case MLX4_MODULE_ID_QSFP28:
2399                 modinfo->type = ETH_MODULE_SFF_8636;
2400                 modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
2401                 break;
2402         case MLX4_MODULE_ID_SFP:
2403                 modinfo->type = ETH_MODULE_SFF_8472;
2404                 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
2405                 break;
2406         default:
2407                 en_err(priv, "mlx4_en_get_module_info :  Not recognized cable type\n");
2408                 return -EINVAL;
2409         }
2410
2411         return 0;
2412 }
2413
2414 static int mlx4_en_get_module_eeprom(struct net_device *dev,
2415                                      struct ethtool_eeprom *ee,
2416                                      u8 *data)
2417 {
2418         struct mlx4_en_priv *priv = netdev_priv(dev);
2419         struct mlx4_en_dev *mdev = priv->mdev;
2420         int offset = ee->offset;
2421         int i = 0, ret;
2422
2423         if (ee->len == 0)
2424                 return -EINVAL;
2425
2426         memset(data, 0, ee->len);
2427
2428         while (i < ee->len) {
2429                 en_dbg(DRV, priv,
2430                        "mlx4_get_module_info i(%d) offset(%d) len(%d)\n",
2431                        i, offset, ee->len - i);
2432
2433                 ret = mlx4_get_module_info(mdev->dev, priv->port,
2434                                            offset, ee->len - i, data + i);
2435
2436                 if (!ret) /* Done reading */
2437                         return 0;
2438
2439                 if (ret < 0) {
2440                         en_err(priv,
2441                                "mlx4_get_module_info i(%d) offset(%d) bytes_to_read(%d) - FAILED (0x%x)\n",
2442                                i, offset, ee->len - i, ret);
2443                         return -1;
2444                 }
2445
2446                 i += ret;
2447                 offset += ret;
2448         }
2449         return 0;
2450 }
2451
2452 static void mlx4_en_print_eeprom(u8 *data, __u32 len)
2453 {
2454         int             i;
2455         int             j = 0;
2456         int             row = 0;
2457         const int       NUM_OF_BYTES = 16;
2458
2459         printf("\nOffset\t\tValues\n");
2460         printf("------\t\t------\n");
2461         while(row < len){
2462                 printf("0x%04x\t\t",row);
2463                 for(i=0; i < NUM_OF_BYTES; i++){
2464                         printf("%02x ", data[j]);
2465                         row++;
2466                         j++;
2467                 }
2468                 printf("\n");
2469         }
2470 }
2471
2472 /* Read cable EEPROM module information by first inspecting the first
2473  * two bytes to get the length and then read the rest of the information.
2474  * The information is printed to dmesg. */
2475 static int mlx4_en_read_eeprom(SYSCTL_HANDLER_ARGS)
2476 {
2477
2478         u8*             data;
2479         int             error;
2480         int             result = 0;
2481         struct          mlx4_en_priv *priv;
2482         struct          net_device *dev;
2483         struct          ethtool_modinfo modinfo;
2484         struct          ethtool_eeprom ee;
2485
2486         error = sysctl_handle_int(oidp, &result, 0, req);
2487         if (error || !req->newptr)
2488                 return (error);
2489
2490         if (result == 1) {
2491                 priv = arg1;
2492                 dev = priv->dev;
2493                 data = kmalloc(PAGE_SIZE, GFP_KERNEL);
2494
2495                 error = mlx4_en_get_module_info(dev, &modinfo);
2496                 if (error) {
2497                         en_err(priv,
2498                                "mlx4_en_get_module_info returned with error - FAILED (0x%x)\n",
2499                                -error);
2500                         goto out;
2501                 }
2502
2503                 ee.len = modinfo.eeprom_len;
2504                 ee.offset = 0;
2505
2506                 error = mlx4_en_get_module_eeprom(dev, &ee, data);
2507                 if (error) {
2508                         en_err(priv,
2509                                "mlx4_en_get_module_eeprom returned with error - FAILED (0x%x)\n",
2510                                -error);
2511                         /* Continue printing partial information in case of an error */
2512                 }
2513
2514                 /* EEPROM information will be printed in dmesg */
2515                 mlx4_en_print_eeprom(data, ee.len);
2516 out:
2517                 kfree(data);
2518         }
2519         /* Return zero to prevent sysctl failure. */
2520         return (0);
2521 }
2522
2523 static int mlx4_en_set_tx_ppp(SYSCTL_HANDLER_ARGS)
2524 {
2525         struct mlx4_en_priv *priv;
2526         int ppp;
2527         int error;
2528
2529         priv = arg1;
2530         ppp = priv->prof->tx_ppp;
2531         error = sysctl_handle_int(oidp, &ppp, 0, req);
2532         if (error || !req->newptr)
2533                 return (error);
2534         if (ppp > 0xff || ppp < 0)
2535                 return (-EINVAL);
2536         priv->prof->tx_ppp = ppp;
2537         error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
2538                                        priv->rx_mb_size + ETHER_CRC_LEN,
2539                                        priv->prof->tx_pause,
2540                                        priv->prof->tx_ppp,
2541                                        priv->prof->rx_pause,
2542                                        priv->prof->rx_ppp);
2543
2544         return (error);
2545 }
2546
2547 static int mlx4_en_set_rx_ppp(SYSCTL_HANDLER_ARGS)
2548 {
2549         struct mlx4_en_priv *priv;
2550         struct mlx4_en_dev *mdev;
2551         int ppp;
2552         int error;
2553         int port_up;
2554
2555         port_up = 0;
2556         priv = arg1;
2557         mdev = priv->mdev;
2558         ppp = priv->prof->rx_ppp;
2559         error = sysctl_handle_int(oidp, &ppp, 0, req);
2560         if (error || !req->newptr)
2561                 return (error);
2562         if (ppp > 0xff || ppp < 0)
2563                 return (-EINVAL);
2564         /* See if we have to change the number of tx queues. */
2565         if (!ppp != !priv->prof->rx_ppp) {
2566                 mutex_lock(&mdev->state_lock);
2567                 if (priv->port_up) {
2568                         port_up = 1;
2569                         mlx4_en_stop_port(priv->dev);
2570                 }
2571                 mlx4_en_free_resources(priv);
2572                 priv->prof->rx_ppp = ppp;
2573                 error = -mlx4_en_alloc_resources(priv);
2574                 if (error)
2575                         en_err(priv, "Failed reallocating port resources\n");
2576                 if (error == 0 && port_up) {
2577                         error = -mlx4_en_start_port(priv->dev);
2578                         if (error)
2579                                 en_err(priv, "Failed starting port\n");
2580                 }
2581                 mutex_unlock(&mdev->state_lock);
2582                 return (error);
2583
2584         }
2585         priv->prof->rx_ppp = ppp;
2586         error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
2587                                        priv->rx_mb_size + ETHER_CRC_LEN,
2588                                        priv->prof->tx_pause,
2589                                        priv->prof->tx_ppp,
2590                                        priv->prof->rx_pause,
2591                                        priv->prof->rx_ppp);
2592
2593         return (error);
2594 }
2595
2596 static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv)
2597 {
2598         struct net_device *dev;
2599         struct sysctl_ctx_list *ctx;
2600         struct sysctl_oid *node;
2601         struct sysctl_oid_list *node_list;
2602         struct sysctl_oid *coal;
2603         struct sysctl_oid_list *coal_list;
2604         const char *pnameunit;
2605
2606         dev = priv->dev;
2607         ctx = &priv->conf_ctx;
2608         pnameunit = device_get_nameunit(priv->mdev->pdev->dev.bsddev);
2609
2610         sysctl_ctx_init(ctx);
2611         priv->conf_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw),
2612             OID_AUTO, dev->if_xname, CTLFLAG_RD, 0, "mlx4 10gig ethernet");
2613         node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->conf_sysctl), OID_AUTO,
2614             "conf", CTLFLAG_RD, NULL, "Configuration");
2615         node_list = SYSCTL_CHILDREN(node);
2616
2617         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "msg_enable",
2618             CTLFLAG_RW, &priv->msg_enable, 0,
2619             "Driver message enable bitfield");
2620         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_rings",
2621             CTLFLAG_RD, &priv->rx_ring_num, 0,
2622             "Number of receive rings");
2623         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_rings",
2624             CTLFLAG_RD, &priv->tx_ring_num, 0,
2625             "Number of transmit rings");
2626         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_size",
2627             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2628             mlx4_en_set_rx_ring_size, "I", "Receive ring size");
2629         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_size",
2630             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2631             mlx4_en_set_tx_ring_size, "I", "Transmit ring size");
2632         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_ppp",
2633             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2634             mlx4_en_set_tx_ppp, "I", "TX Per-priority pause");
2635         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_ppp",
2636             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2637             mlx4_en_set_rx_ppp, "I", "RX Per-priority pause");
2638         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "port_num",
2639             CTLFLAG_RD, &priv->port, 0,
2640             "Port Number");
2641         SYSCTL_ADD_STRING(ctx, node_list, OID_AUTO, "device_name",
2642             CTLFLAG_RD, __DECONST(void *, pnameunit), 0,
2643             "PCI device name");
2644
2645         /* Add coalescer configuration. */
2646         coal = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO,
2647             "coalesce", CTLFLAG_RD, NULL, "Interrupt coalesce configuration");
2648         coal_list = SYSCTL_CHILDREN(coal);
2649         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_low",
2650             CTLFLAG_RW, &priv->pkt_rate_low, 0,
2651             "Packets per-second for minimum delay");
2652         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_low",
2653             CTLFLAG_RW, &priv->rx_usecs_low, 0,
2654             "Minimum RX delay in micro-seconds");
2655         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_high",
2656             CTLFLAG_RW, &priv->pkt_rate_high, 0,
2657             "Packets per-second for maximum delay");
2658         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_high",
2659             CTLFLAG_RW, &priv->rx_usecs_high, 0,
2660             "Maximum RX delay in micro-seconds");
2661         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "sample_interval",
2662             CTLFLAG_RW, &priv->sample_interval, 0,
2663             "adaptive frequency in units of HZ ticks");
2664         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "adaptive_rx_coal",
2665             CTLFLAG_RW, &priv->adaptive_rx_coal, 0,
2666             "Enable adaptive rx coalescing");
2667         /* EEPROM support */
2668         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "eeprom_info",
2669             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2670             mlx4_en_read_eeprom, "I", "EEPROM information");
2671 }
2672
2673 static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv)
2674 {
2675         struct sysctl_ctx_list *ctx;
2676         struct sysctl_oid_list *node_list;
2677         struct sysctl_oid *ring_node;
2678         struct sysctl_oid_list *ring_list;
2679         struct mlx4_en_tx_ring *tx_ring;
2680         struct mlx4_en_rx_ring *rx_ring;
2681         char namebuf[128];
2682         int i;
2683
2684         ctx = &priv->stat_ctx;
2685         sysctl_ctx_init(ctx);
2686         priv->stat_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->conf_sysctl), OID_AUTO,
2687             "stat", CTLFLAG_RD, NULL, "Statistics");
2688         node_list = SYSCTL_CHILDREN(priv->stat_sysctl);
2689
2690 #ifdef MLX4_EN_PERF_STAT
2691         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_poll", CTLFLAG_RD,
2692             &priv->pstats.tx_poll, "TX Poll calls");
2693         SYSCTL_ADD_QUAD(ctx, node_list, OID_AUTO, "tx_pktsz_avg", CTLFLAG_RD,
2694             &priv->pstats.tx_pktsz_avg, "TX average packet size");
2695         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "inflight_avg", CTLFLAG_RD,
2696             &priv->pstats.inflight_avg, "TX average packets in-flight");
2697         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_coal_avg", CTLFLAG_RD,
2698             &priv->pstats.tx_coal_avg, "TX average coalesced completions");
2699         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_coal_avg", CTLFLAG_RD,
2700             &priv->pstats.rx_coal_avg, "RX average coalesced completions");
2701 #endif
2702
2703         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tso_packets", CTLFLAG_RD,
2704             &priv->port_stats.tso_packets, "TSO packets sent");
2705         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "queue_stopped", CTLFLAG_RD,
2706             &priv->port_stats.queue_stopped, "Queue full");
2707         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "wake_queue", CTLFLAG_RD,
2708             &priv->port_stats.wake_queue, "Queue resumed after full");
2709         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_timeout", CTLFLAG_RD,
2710             &priv->port_stats.tx_timeout, "Transmit timeouts");
2711         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_oversized_packets", CTLFLAG_RD,
2712             &priv->port_stats.oversized_packets, "TX oversized packets, m_defrag failed");
2713         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_alloc_failed", CTLFLAG_RD,
2714             &priv->port_stats.rx_alloc_failed, "RX failed to allocate mbuf");
2715         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_chksum_good", CTLFLAG_RD,
2716             &priv->port_stats.rx_chksum_good, "RX checksum offload success");
2717         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_chksum_none", CTLFLAG_RD,
2718             &priv->port_stats.rx_chksum_none, "RX without checksum offload");
2719         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_chksum_offload",
2720             CTLFLAG_RD, &priv->port_stats.tx_chksum_offload,
2721             "TX checksum offloads");
2722         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "defrag_attempts", CTLFLAG_RD,
2723             &priv->port_stats.defrag_attempts, "Oversized chains defragged");
2724
2725         /* Could strdup the names and add in a loop.  This is simpler. */
2726         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_bytes", CTLFLAG_RD,
2727             &priv->pkstats.rx_bytes, "RX Bytes");
2728         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_packets", CTLFLAG_RD,
2729             &priv->pkstats.rx_packets, "RX packets");
2730         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_multicast_packets", CTLFLAG_RD,
2731             &priv->pkstats.rx_multicast_packets, "RX Multicast Packets");
2732         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_broadcast_packets", CTLFLAG_RD,
2733             &priv->pkstats.rx_broadcast_packets, "RX Broadcast Packets");
2734         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_errors", CTLFLAG_RD,
2735             &priv->pkstats.rx_errors, "RX Errors");
2736         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_dropped", CTLFLAG_RD,
2737             &priv->pkstats.rx_dropped, "RX Dropped");
2738         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_length_errors", CTLFLAG_RD,
2739             &priv->pkstats.rx_length_errors, "RX Length Errors");
2740         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_over_errors", CTLFLAG_RD,
2741             &priv->pkstats.rx_over_errors, "RX Over Errors");
2742         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_crc_errors", CTLFLAG_RD,
2743             &priv->pkstats.rx_crc_errors, "RX CRC Errors");
2744         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_jabbers", CTLFLAG_RD,
2745             &priv->pkstats.rx_jabbers, "RX Jabbers");
2746
2747
2748         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_in_range_length_error", CTLFLAG_RD,
2749             &priv->pkstats.rx_in_range_length_error, "RX IN_Range Length Error");
2750         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_out_range_length_error",
2751                 CTLFLAG_RD, &priv->pkstats.rx_out_range_length_error,
2752                 "RX Out Range Length Error");
2753         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_lt_64_bytes_packets", CTLFLAG_RD,
2754             &priv->pkstats.rx_lt_64_bytes_packets, "RX Lt 64 Bytes Packets");
2755         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_127_bytes_packets", CTLFLAG_RD,
2756             &priv->pkstats.rx_127_bytes_packets, "RX 127 bytes Packets");
2757         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_255_bytes_packets", CTLFLAG_RD,
2758             &priv->pkstats.rx_255_bytes_packets, "RX 255 bytes Packets");
2759         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_511_bytes_packets", CTLFLAG_RD,
2760             &priv->pkstats.rx_511_bytes_packets, "RX 511 bytes Packets");
2761         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_1023_bytes_packets", CTLFLAG_RD,
2762             &priv->pkstats.rx_1023_bytes_packets, "RX 1023 bytes Packets");
2763         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_1518_bytes_packets", CTLFLAG_RD,
2764             &priv->pkstats.rx_1518_bytes_packets, "RX 1518 bytes Packets");
2765         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_1522_bytes_packets", CTLFLAG_RD,
2766             &priv->pkstats.rx_1522_bytes_packets, "RX 1522 bytes Packets");
2767         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_1548_bytes_packets", CTLFLAG_RD,
2768             &priv->pkstats.rx_1548_bytes_packets, "RX 1548 bytes Packets");
2769         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "rx_gt_1548_bytes_packets", CTLFLAG_RD,
2770             &priv->pkstats.rx_gt_1548_bytes_packets,
2771             "RX Greater Then 1548 bytes Packets");
2772
2773         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_packets", CTLFLAG_RD,
2774             &priv->pkstats.tx_packets, "TX packets");
2775         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_bytes", CTLFLAG_RD,
2776             &priv->pkstats.tx_bytes, "TX Bytes");
2777         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_multicast_packets", CTLFLAG_RD,
2778             &priv->pkstats.tx_multicast_packets, "TX Multicast Packets");
2779         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_broadcast_packets", CTLFLAG_RD,
2780             &priv->pkstats.tx_broadcast_packets, "TX Broadcast Packets");
2781         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_errors", CTLFLAG_RD,
2782             &priv->pkstats.tx_errors, "TX Errors");
2783         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_dropped", CTLFLAG_RD,
2784             &priv->pkstats.tx_dropped, "TX Dropped");
2785         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_lt_64_bytes_packets", CTLFLAG_RD,
2786             &priv->pkstats.tx_lt_64_bytes_packets, "TX Less Then 64 Bytes Packets");
2787         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_127_bytes_packets", CTLFLAG_RD,
2788             &priv->pkstats.tx_127_bytes_packets, "TX 127 Bytes Packets");
2789         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_255_bytes_packets", CTLFLAG_RD,
2790             &priv->pkstats.tx_255_bytes_packets, "TX 255 Bytes Packets");
2791         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_511_bytes_packets", CTLFLAG_RD,
2792             &priv->pkstats.tx_511_bytes_packets, "TX 511 Bytes Packets");
2793         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_1023_bytes_packets", CTLFLAG_RD,
2794             &priv->pkstats.tx_1023_bytes_packets, "TX 1023 Bytes Packets");
2795         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_1518_bytes_packets", CTLFLAG_RD,
2796             &priv->pkstats.tx_1518_bytes_packets, "TX 1518 Bytes Packets");
2797         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_1522_bytes_packets", CTLFLAG_RD,
2798             &priv->pkstats.tx_1522_bytes_packets, "TX 1522 Bytes Packets");
2799         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_1548_bytes_packets", CTLFLAG_RD,
2800             &priv->pkstats.tx_1548_bytes_packets, "TX 1548 Bytes Packets");
2801         SYSCTL_ADD_ULONG(ctx, node_list, OID_AUTO, "tx_gt_1548_bytes_packets", CTLFLAG_RD,
2802             &priv->pkstats.tx_gt_1548_bytes_packets,
2803             "TX Greater Then 1548 Bytes Packets");
2804
2805
2806
2807         for (i = 0; i < priv->tx_ring_num; i++) {
2808                 tx_ring = priv->tx_ring[i];
2809                 snprintf(namebuf, sizeof(namebuf), "tx_ring%d", i);
2810                 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
2811                     CTLFLAG_RD, NULL, "TX Ring");
2812                 ring_list = SYSCTL_CHILDREN(ring_node);
2813                 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "packets",
2814                     CTLFLAG_RD, &tx_ring->packets, "TX packets");
2815                 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "bytes",
2816                     CTLFLAG_RD, &tx_ring->bytes, "TX bytes");
2817                 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "tso_packets",
2818                     CTLFLAG_RD, &tx_ring->tso_packets, "TSO packets");
2819                 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "defrag_attempts",
2820                     CTLFLAG_RD, &tx_ring->defrag_attempts, "Oversized chains defragged");
2821         }
2822
2823         for (i = 0; i < priv->rx_ring_num; i++) {
2824                 rx_ring = priv->rx_ring[i];
2825                 snprintf(namebuf, sizeof(namebuf), "rx_ring%d", i);
2826                 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
2827                     CTLFLAG_RD, NULL, "RX Ring");
2828                 ring_list = SYSCTL_CHILDREN(ring_node);
2829                 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "packets",
2830                     CTLFLAG_RD, &rx_ring->packets, "RX packets");
2831                 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "bytes",
2832                     CTLFLAG_RD, &rx_ring->bytes, "RX bytes");
2833                 SYSCTL_ADD_ULONG(ctx, ring_list, OID_AUTO, "error",
2834                     CTLFLAG_RD, &rx_ring->errors, "RX soft errors");
2835         }
2836 }