sys/dev/mlx4/mlx4_en/mlx4_en_netdev.c

   1 /*
   2  * Copyright (c) 2007, 2014 Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  */
  33
  34 #include <linux/etherdevice.h>
  35 #include <linux/delay.h>
  36 #include <linux/slab.h>
  37 #include <linux/compat.h>
  38 #ifdef CONFIG_NET_RX_BUSY_POLL
  39 #include <net/busy_poll.h>
  40 #endif
  41
  42 #include <linux/list.h>
  43 #include <linux/if_ether.h>
  44
  45 #include <dev/mlx4/driver.h>
  46 #include <dev/mlx4/device.h>
  47 #include <dev/mlx4/cmd.h>
  48 #include <dev/mlx4/cq.h>
  49
  50 #include <sys/sockio.h>
  51 #include <sys/sysctl.h>
  52
  53 #include "en.h"
  54 #include "en_port.h"
  55
  56 static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv);
  57 static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv);
  58
  59 #ifdef CONFIG_NET_RX_BUSY_POLL
  60 /* must be called with local_bh_disable()d */
  61 static int mlx4_en_low_latency_recv(struct napi_struct *napi)
  62 {
  63         struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
  64         struct net_device *dev = cq->dev;
  65         struct mlx4_en_priv *priv = netdev_priv(dev);
  66         struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring];
  67         int done;
  68
  69         if (!priv->port_up)
  70                 return LL_FLUSH_FAILED;
  71
  72         if (!mlx4_en_cq_lock_poll(cq))
  73                 return LL_FLUSH_BUSY;
  74
  75         done = mlx4_en_process_rx_cq(dev, cq, 4);
  76 #ifdef LL_EXTENDED_STATS
  77         if (likely(done))
  78                 rx_ring->cleaned += done;
  79         else
  80                 rx_ring->misses++;
  81 #endif
  82
  83         mlx4_en_cq_unlock_poll(cq);
  84
  85         return done;
  86 }
  87 #endif  /* CONFIG_NET_RX_BUSY_POLL */
  88
  89 #ifdef CONFIG_RFS_ACCEL
  90
  91 struct mlx4_en_filter {
  92         struct list_head next;
  93         struct work_struct work;
  94
  95         u8     ip_proto;
  96         __be32 src_ip;
  97         __be32 dst_ip;
  98         __be16 src_port;
  99         __be16 dst_port;
 100
 101         int rxq_index;
 102         struct mlx4_en_priv *priv;
 103         u32 flow_id;                    /* RFS infrastructure id */
 104         int id;                         /* mlx4_en driver id */
 105         u64 reg_id;                     /* Flow steering API id */
 106         u8 activated;                   /* Used to prevent expiry before filter
 107                                          * is attached
 108                                          */
 109         struct hlist_node filter_chain;
 110 };
 111
 112 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 113
 114 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 115 {
 116         switch (ip_proto) {
 117         case IPPROTO_UDP:
 118                 return MLX4_NET_TRANS_RULE_ID_UDP;
 119         case IPPROTO_TCP:
 120                 return MLX4_NET_TRANS_RULE_ID_TCP;
 121         default:
 122                 return MLX4_NET_TRANS_RULE_NUM;
 123         }
 124 };
 125
 126 static void mlx4_en_filter_work(struct work_struct *work)
 127 {
 128         struct mlx4_en_filter *filter = container_of(work,
 129                                                      struct mlx4_en_filter,
 130                                                      work);
 131         struct mlx4_en_priv *priv = filter->priv;
 132         struct mlx4_spec_list spec_tcp_udp = {
 133                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 134                 {
 135                         .tcp_udp = {
 136                                 .dst_port = filter->dst_port,
 137                                 .dst_port_msk = (__force __be16)-1,
 138                                 .src_port = filter->src_port,
 139                                 .src_port_msk = (__force __be16)-1,
 140                         },
 141                 },
 142         };
 143         struct mlx4_spec_list spec_ip = {
 144                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 145                 {
 146                         .ipv4 = {
 147                                 .dst_ip = filter->dst_ip,
 148                                 .dst_ip_msk = (__force __be32)-1,
 149                                 .src_ip = filter->src_ip,
 150                                 .src_ip_msk = (__force __be32)-1,
 151                         },
 152                 },
 153         };
 154         struct mlx4_spec_list spec_eth = {
 155                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 156         };
 157         struct mlx4_net_trans_rule rule = {
 158                 .list = LIST_HEAD_INIT(rule.list),
 159                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 160                 .exclusive = 1,
 161                 .allow_loopback = 1,
 162                 .promisc_mode = MLX4_FS_REGULAR,
 163                 .port = priv->port,
 164                 .priority = MLX4_DOMAIN_RFS,
 165         };
 166         int rc;
 167         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 168
 169         if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
 170                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 171                         filter->ip_proto);
 172                 goto ignore;
 173         }
 174         list_add_tail(&spec_eth.list, &rule.list);
 175         list_add_tail(&spec_ip.list, &rule.list);
 176         list_add_tail(&spec_tcp_udp.list, &rule.list);
 177
 178         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 179         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 180         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 181
 182         filter->activated = 0;
 183
 184         if (filter->reg_id) {
 185                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 186                 if (rc && rc != -ENOENT)
 187                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 188         }
 189
 190         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 191         if (rc)
 192                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 193
 194 ignore:
 195         mlx4_en_filter_rfs_expire(priv);
 196
 197         filter->activated = 1;
 198 }
 199
 200 static inline struct hlist_head *
 201 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 202                    __be16 src_port, __be16 dst_port)
 203 {
 204         unsigned long l;
 205         int bucket_idx;
 206
 207         l = (__force unsigned long)src_port |
 208             ((__force unsigned long)dst_port << 2);
 209         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 210
 211         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 212
 213         return &priv->filter_hash[bucket_idx];
 214 }
 215
 216 static struct mlx4_en_filter *
 217 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 218                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 219                      __be16 dst_port, u32 flow_id)
 220 {
 221         struct mlx4_en_filter *filter = NULL;
 222
 223         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 224         if (!filter)
 225                 return NULL;
 226
 227         filter->priv = priv;
 228         filter->rxq_index = rxq_index;
 229         INIT_WORK(&filter->work, mlx4_en_filter_work);
 230
 231         filter->src_ip = src_ip;
 232         filter->dst_ip = dst_ip;
 233         filter->ip_proto = ip_proto;
 234         filter->src_port = src_port;
 235         filter->dst_port = dst_port;
 236
 237         filter->flow_id = flow_id;
 238
 239         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 240
 241         list_add_tail(&filter->next, &priv->filters);
 242         hlist_add_head(&filter->filter_chain,
 243                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 244                                           dst_port));
 245
 246         return filter;
 247 }
 248
 249 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 250 {
 251         struct mlx4_en_priv *priv = filter->priv;
 252         int rc;
 253
 254         list_del(&filter->next);
 255
 256         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 257         if (rc && rc != -ENOENT)
 258                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 259
 260         kfree(filter);
 261 }
 262
 263 static inline struct mlx4_en_filter *
 264 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 265                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 266 {
 267         struct mlx4_en_filter *filter;
 268         struct mlx4_en_filter *ret = NULL;
 269
 270         hlist_for_each_entry(filter,
 271                              filter_hash_bucket(priv, src_ip, dst_ip,
 272                                                 src_port, dst_port),
 273                              filter_chain) {
 274                 if (filter->src_ip == src_ip &&
 275                     filter->dst_ip == dst_ip &&
 276                     filter->ip_proto == ip_proto &&
 277                     filter->src_port == src_port &&
 278                     filter->dst_port == dst_port) {
 279                         ret = filter;
 280                         break;
 281                 }
 282         }
 283
 284         return ret;
 285 }
 286
 287 static int
 288 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 289                    u16 rxq_index, u32 flow_id)
 290 {
 291         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 292         struct mlx4_en_filter *filter;
 293         const struct iphdr *ip;
 294         const __be16 *ports;
 295         u8 ip_proto;
 296         __be32 src_ip;
 297         __be32 dst_ip;
 298         __be16 src_port;
 299         __be16 dst_port;
 300         int nhoff = skb_network_offset(skb);
 301         int ret = 0;
 302
 303         if (skb->protocol != htons(ETH_P_IP))
 304                 return -EPROTONOSUPPORT;
 305
 306         ip = (const struct iphdr *)(skb->data + nhoff);
 307         if (ip_is_fragment(ip))
 308                 return -EPROTONOSUPPORT;
 309
 310         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 311                 return -EPROTONOSUPPORT;
 312         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 313
 314         ip_proto = ip->protocol;
 315         src_ip = ip->saddr;
 316         dst_ip = ip->daddr;
 317         src_port = ports[0];
 318         dst_port = ports[1];
 319
 320         spin_lock_bh(&priv->filters_lock);
 321         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 322                                      src_port, dst_port);
 323         if (filter) {
 324                 if (filter->rxq_index == rxq_index)
 325                         goto out;
 326
 327                 filter->rxq_index = rxq_index;
 328         } else {
 329                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 330                                               src_ip, dst_ip, ip_proto,
 331                                               src_port, dst_port, flow_id);
 332                 if (!filter) {
 333                         ret = -ENOMEM;
 334                         goto err;
 335                 }
 336         }
 337
 338         queue_work(priv->mdev->workqueue, &filter->work);
 339
 340 out:
 341         ret = filter->id;
 342 err:
 343         spin_unlock_bh(&priv->filters_lock);
 344
 345         return ret;
 346 }
 347
 348 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 349 {
 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_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
 454                                     int qpn, u64 *reg_id)
 455 {
 456         int err;
 457
 458         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
 459             priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
 460                 return 0; /* do nothing */
 461
 462         err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
 463                                     MLX4_DOMAIN_NIC, reg_id);
 464         if (err) {
 465                 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 466                 return err;
 467         }
 468         en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, (long long)*reg_id);
 469         return 0;
 470 }
 471
 472 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 473                                 unsigned char *mac, int *qpn, u64 *reg_id)
 474 {
 475         struct mlx4_en_dev *mdev = priv->mdev;
 476         struct mlx4_dev *dev = mdev->dev;
 477         int err;
 478
 479         switch (dev->caps.steering_mode) {
 480         case MLX4_STEERING_MODE_B0: {
 481                 struct mlx4_qp qp;
 482                 u8 gid[16] = {0};
 483
 484                 qp.qpn = *qpn;
 485                 memcpy(&gid[10], mac, ETH_ALEN);
 486                 gid[5] = priv->port;
 487
 488                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 489                 break;
 490         }
 491         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 492                 struct mlx4_spec_list spec_eth = { {NULL} };
 493                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 494
 495                 struct mlx4_net_trans_rule rule = {
 496                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 497                         .exclusive = 0,
 498                         .allow_loopback = 1,
 499                         .promisc_mode = MLX4_FS_REGULAR,
 500                         .priority = MLX4_DOMAIN_NIC,
 501                 };
 502
 503                 rule.port = priv->port;
 504                 rule.qpn = *qpn;
 505                 INIT_LIST_HEAD(&rule.list);
 506
 507                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 508                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 509                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 510                 list_add_tail(&spec_eth.list, &rule.list);
 511
 512                 err = mlx4_flow_attach(dev, &rule, reg_id);
 513                 break;
 514         }
 515         default:
 516                 return -EINVAL;
 517         }
 518         if (err)
 519                 en_warn(priv, "Failed Attaching Unicast\n");
 520
 521         return err;
 522 }
 523
 524 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 525                                      unsigned char *mac, int qpn, u64 reg_id)
 526 {
 527         struct mlx4_en_dev *mdev = priv->mdev;
 528         struct mlx4_dev *dev = mdev->dev;
 529
 530         switch (dev->caps.steering_mode) {
 531         case MLX4_STEERING_MODE_B0: {
 532                 struct mlx4_qp qp;
 533                 u8 gid[16] = {0};
 534
 535                 qp.qpn = qpn;
 536                 memcpy(&gid[10], mac, ETH_ALEN);
 537                 gid[5] = priv->port;
 538
 539                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 540                 break;
 541         }
 542         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 543                 mlx4_flow_detach(dev, reg_id);
 544                 break;
 545         }
 546         default:
 547                 en_err(priv, "Invalid steering mode.\n");
 548         }
 549 }
 550
 551 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 552 {
 553         struct mlx4_en_dev *mdev = priv->mdev;
 554         struct mlx4_dev *dev = mdev->dev;
 555         int index = 0;
 556         int err = 0;
 557         int *qpn = &priv->base_qpn;
 558         u64 mac = mlx4_mac_to_u64(IF_LLADDR(priv->dev));
 559
 560         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 561                IF_LLADDR(priv->dev));
 562         index = mlx4_register_mac(dev, priv->port, mac);
 563         if (index < 0) {
 564                 err = index;
 565                 en_err(priv, "Failed adding MAC: %pM\n",
 566                        IF_LLADDR(priv->dev));
 567                 return err;
 568         }
 569
 570         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 571                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 572                 *qpn = base_qpn + index;
 573                 return 0;
 574         }
 575
 576         err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP);
 577         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 578         if (err) {
 579                 en_err(priv, "Failed to reserve qp for mac registration\n");
 580                 mlx4_unregister_mac(dev, priv->port, mac);
 581                 return err;
 582         }
 583
 584         return 0;
 585 }
 586
 587 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 588 {
 589         struct mlx4_en_dev *mdev = priv->mdev;
 590         struct mlx4_dev *dev = mdev->dev;
 591         int qpn = priv->base_qpn;
 592
 593         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 594                 u64 mac = mlx4_mac_to_u64(IF_LLADDR(priv->dev));
 595                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 596                        IF_LLADDR(priv->dev));
 597                 mlx4_unregister_mac(dev, priv->port, mac);
 598         } else {
 599                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 600                        priv->port, qpn);
 601                 mlx4_qp_release_range(dev, qpn, 1);
 602                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 603         }
 604 }
 605
 606 static void mlx4_en_clear_uclist(struct net_device *dev)
 607 {
 608         struct mlx4_en_priv *priv = netdev_priv(dev);
 609         struct mlx4_en_addr_list *tmp, *uc_to_del;
 610
 611         list_for_each_entry_safe(uc_to_del, tmp, &priv->uc_list, list) {
 612                 list_del(&uc_to_del->list);
 613                 kfree(uc_to_del);
 614         }
 615 }
 616
 617 static void mlx4_en_cache_uclist(struct net_device *dev)
 618 {
 619         struct mlx4_en_priv *priv = netdev_priv(dev);
 620         struct mlx4_en_addr_list *tmp;
 621         struct ifaddr *ifa;
 622
 623         mlx4_en_clear_uclist(dev);
 624
 625         if_addr_rlock(dev);
 626         TAILQ_FOREACH(ifa, &dev->if_addrhead, ifa_link) {
 627                 if (ifa->ifa_addr->sa_family != AF_LINK)
 628                         continue;
 629                 if (((struct sockaddr_dl *)ifa->ifa_addr)->sdl_alen !=
 630                                 ETHER_ADDR_LEN)
 631                         continue;
 632                 tmp = kzalloc(sizeof(struct mlx4_en_addr_list), GFP_ATOMIC);
 633                 if (tmp == NULL) {
 634                         en_err(priv, "Failed to allocate address list\n");
 635                         break;
 636                 }
 637                 memcpy(tmp->addr,
 638                         LLADDR((struct sockaddr_dl *)ifa->ifa_addr), ETH_ALEN);
 639                 list_add_tail(&tmp->list, &priv->uc_list);
 640         }
 641         if_addr_runlock(dev);
 642 }
 643
 644 static void mlx4_en_clear_mclist(struct net_device *dev)
 645 {
 646         struct mlx4_en_priv *priv = netdev_priv(dev);
 647         struct mlx4_en_addr_list *tmp, *mc_to_del;
 648
 649         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 650                 list_del(&mc_to_del->list);
 651                 kfree(mc_to_del);
 652         }
 653 }
 654
 655 static void mlx4_en_cache_mclist(struct net_device *dev)
 656 {
 657         struct mlx4_en_priv *priv = netdev_priv(dev);
 658         struct mlx4_en_addr_list *tmp;
 659         struct ifmultiaddr *ifma;
 660
 661         mlx4_en_clear_mclist(dev);
 662
 663         if_maddr_rlock(dev);
 664         TAILQ_FOREACH(ifma, &dev->if_multiaddrs, ifma_link) {
 665                 if (ifma->ifma_addr->sa_family != AF_LINK)
 666                         continue;
 667                 if (((struct sockaddr_dl *)ifma->ifma_addr)->sdl_alen !=
 668                                 ETHER_ADDR_LEN)
 669                         continue;
 670                 tmp = kzalloc(sizeof(struct mlx4_en_addr_list), GFP_ATOMIC);
 671                 if (tmp == NULL) {
 672                         en_err(priv, "Failed to allocate address list\n");
 673                         break;
 674                 }
 675                 memcpy(tmp->addr,
 676                         LLADDR((struct sockaddr_dl *)ifma->ifma_addr), ETH_ALEN);
 677                 list_add_tail(&tmp->list, &priv->mc_list);
 678         }
 679         if_maddr_runlock(dev);
 680 }
 681
 682 static void update_addr_list_flags(struct mlx4_en_priv *priv,
 683                                 struct list_head *dst,
 684                                 struct list_head *src)
 685 {
 686         struct mlx4_en_addr_list *dst_tmp, *src_tmp, *new_mc;
 687         bool found;
 688
 689         /* Find all the entries that should be removed from dst,
 690          * These are the entries that are not found in src
 691          */
 692         list_for_each_entry(dst_tmp, dst, list) {
 693                 found = false;
 694                 list_for_each_entry(src_tmp, src, list) {
 695                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 696                                 found = true;
 697                                 break;
 698                         }
 699                 }
 700                 if (!found)
 701                         dst_tmp->action = MLX4_ADDR_LIST_REM;
 702         }
 703
 704         /* Add entries that exist in src but not in dst
 705          * mark them as need to add
 706          */
 707         list_for_each_entry(src_tmp, src, list) {
 708                 found = false;
 709                 list_for_each_entry(dst_tmp, dst, list) {
 710                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 711                                 dst_tmp->action = MLX4_ADDR_LIST_NONE;
 712                                 found = true;
 713                                 break;
 714                         }
 715                 }
 716                 if (!found) {
 717                         new_mc = kmalloc(sizeof(struct mlx4_en_addr_list),
 718                                          GFP_KERNEL);
 719                         if (!new_mc) {
 720                                 en_err(priv, "Failed to allocate current multicast list\n");
 721                                 return;
 722                         }
 723                         memcpy(new_mc, src_tmp,
 724                                sizeof(struct mlx4_en_addr_list));
 725                         new_mc->action = MLX4_ADDR_LIST_ADD;
 726                         list_add_tail(&new_mc->list, dst);
 727                 }
 728         }
 729 }
 730
 731 static void mlx4_en_set_rx_mode(struct net_device *dev)
 732 {
 733         struct mlx4_en_priv *priv = netdev_priv(dev);
 734
 735         if (!priv->port_up)
 736                 return;
 737
 738         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 739 }
 740
 741 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 742                                      struct mlx4_en_dev *mdev)
 743 {
 744         int err = 0;
 745
 746         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 747                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 748
 749                 /* Enable promiscouos mode */
 750                 switch (mdev->dev->caps.steering_mode) {
 751                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 752                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 753                                                           priv->port,
 754                                                           priv->base_qpn,
 755                                                           MLX4_FS_ALL_DEFAULT);
 756                         if (err)
 757                                 en_err(priv, "Failed enabling promiscuous mode\n");
 758                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 759                         break;
 760
 761                 case MLX4_STEERING_MODE_B0:
 762                         err = mlx4_unicast_promisc_add(mdev->dev,
 763                                                        priv->base_qpn,
 764                                                        priv->port);
 765                         if (err)
 766                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 767
 768                         /* Add the default qp number as multicast
 769                          * promisc
 770                          */
 771                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 772                                 err = mlx4_multicast_promisc_add(mdev->dev,
 773                                                                  priv->base_qpn,
 774                                                                  priv->port);
 775                                 if (err)
 776                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 777                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 778                         }
 779                         break;
 780
 781                 case MLX4_STEERING_MODE_A0:
 782                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 783                                                      priv->port,
 784                                                      priv->base_qpn,
 785                                                      1);
 786                         if (err)
 787                                 en_err(priv, "Failed enabling promiscuous mode\n");
 788                         break;
 789                 }
 790
 791                 /* Disable port multicast filter (unconditionally) */
 792                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 793                                           0, MLX4_MCAST_DISABLE);
 794                 if (err)
 795                         en_err(priv, "Failed disabling multicast filter\n");
 796         }
 797 }
 798
 799 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 800                                        struct mlx4_en_dev *mdev)
 801 {
 802         int err = 0;
 803
 804         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 805
 806         /* Disable promiscouos mode */
 807         switch (mdev->dev->caps.steering_mode) {
 808         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 809                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 810                                                      priv->port,
 811                                                      MLX4_FS_ALL_DEFAULT);
 812                 if (err)
 813                         en_err(priv, "Failed disabling promiscuous mode\n");
 814                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 815                 break;
 816
 817         case MLX4_STEERING_MODE_B0:
 818                 err = mlx4_unicast_promisc_remove(mdev->dev,
 819                                                   priv->base_qpn,
 820                                                   priv->port);
 821                 if (err)
 822                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 823                 /* Disable Multicast promisc */
 824                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 825                         err = mlx4_multicast_promisc_remove(mdev->dev,
 826                                                             priv->base_qpn,
 827                                                             priv->port);
 828                         if (err)
 829                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 830                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 831                 }
 832                 break;
 833
 834         case MLX4_STEERING_MODE_A0:
 835                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 836                                              priv->port,
 837                                              priv->base_qpn, 0);
 838                 if (err)
 839                         en_err(priv, "Failed disabling promiscuous mode\n");
 840                 break;
 841         }
 842 }
 843
 844 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 845                                  struct net_device *dev,
 846                                  struct mlx4_en_dev *mdev)
 847 {
 848         struct mlx4_en_addr_list *addr_list, *tmp;
 849         u8 mc_list[16] = {0};
 850         int err = 0;
 851         u64 mcast_addr = 0;
 852
 853
 854         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 855         if (dev->if_flags & IFF_ALLMULTI) {
 856                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 857                                           0, MLX4_MCAST_DISABLE);
 858                 if (err)
 859                         en_err(priv, "Failed disabling multicast filter\n");
 860
 861                 /* Add the default qp number as multicast promisc */
 862                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 863                         switch (mdev->dev->caps.steering_mode) {
 864                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 865                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
 866                                                                   priv->port,
 867                                                                   priv->base_qpn,
 868                                                                   MLX4_FS_MC_DEFAULT);
 869                                 break;
 870
 871                         case MLX4_STEERING_MODE_B0:
 872                                 err = mlx4_multicast_promisc_add(mdev->dev,
 873                                                                  priv->base_qpn,
 874                                                                  priv->port);
 875                                 break;
 876
 877                         case MLX4_STEERING_MODE_A0:
 878                                 break;
 879                         }
 880                         if (err)
 881                                 en_err(priv, "Failed entering multicast promisc mode\n");
 882                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 883                 }
 884         } else {
 885                 /* Disable Multicast promisc */
 886                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 887                         switch (mdev->dev->caps.steering_mode) {
 888                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 889                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 890                                                                      priv->port,
 891                                                                      MLX4_FS_MC_DEFAULT);
 892                                 break;
 893
 894                         case MLX4_STEERING_MODE_B0:
 895                                 err = mlx4_multicast_promisc_remove(mdev->dev,
 896                                                                     priv->base_qpn,
 897                                                                     priv->port);
 898                                 break;
 899
 900                         case MLX4_STEERING_MODE_A0:
 901                                 break;
 902                         }
 903                         if (err)
 904                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 905                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 906                 }
 907
 908                 /* Update unicast list */
 909                 mlx4_en_cache_uclist(dev);
 910
 911                 update_addr_list_flags(priv, &priv->curr_uc_list, &priv->uc_list);
 912
 913                 list_for_each_entry_safe(addr_list, tmp, &priv->curr_uc_list, list) {
 914                         if (addr_list->action == MLX4_ADDR_LIST_REM) {
 915                                 mlx4_en_uc_steer_release(priv, addr_list->addr,
 916                                                                priv->rss_map.indir_qp.qpn,
 917                                                                addr_list->reg_id);
 918                                 /* remove from list */
 919                                 list_del(&addr_list->list);
 920                                 kfree(addr_list);
 921                         } else if (addr_list->action == MLX4_ADDR_LIST_ADD) {
 922                                 err = mlx4_en_uc_steer_add(priv, addr_list->addr,
 923                                                            &priv->rss_map.indir_qp.qpn,
 924                                                            &addr_list->reg_id);
 925                                 if (err)
 926                                         en_err(priv, "Fail to add unicast address\n");
 927                         }
 928                 }
 929
 930                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 931                                           0, MLX4_MCAST_DISABLE);
 932                 if (err)
 933                         en_err(priv, "Failed disabling multicast filter\n");
 934
 935                 /* Flush mcast filter and init it with broadcast address */
 936                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
 937                                     1, MLX4_MCAST_CONFIG);
 938
 939                 /* Update multicast list - we cache all addresses so they won't
 940                  * change while HW is updated holding the command semaphor */
 941                 mlx4_en_cache_mclist(dev);
 942                 list_for_each_entry(addr_list, &priv->mc_list, list) {
 943                         mcast_addr = mlx4_mac_to_u64(addr_list->addr);
 944                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
 945                                         mcast_addr, 0, MLX4_MCAST_CONFIG);
 946                 }
 947                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 948                                           0, MLX4_MCAST_ENABLE);
 949                 if (err)
 950                         en_err(priv, "Failed enabling multicast filter\n");
 951
 952                 update_addr_list_flags(priv, &priv->curr_mc_list, &priv->mc_list);
 953
 954                 list_for_each_entry_safe(addr_list, tmp, &priv->curr_mc_list, list) {
 955                         if (addr_list->action == MLX4_ADDR_LIST_REM) {
 956                                 /* detach this address and delete from list */
 957                                 memcpy(&mc_list[10], addr_list->addr, ETH_ALEN);
 958                                 mc_list[5] = priv->port;
 959                                 err = mlx4_multicast_detach(mdev->dev,
 960                                                             &priv->rss_map.indir_qp,
 961                                                             mc_list,
 962                                                             MLX4_PROT_ETH,
 963                                                             addr_list->reg_id);
 964                                 if (err)
 965                                         en_err(priv, "Fail to detach multicast address\n");
 966
 967                                 if (addr_list->tunnel_reg_id) {
 968                                         err = mlx4_flow_detach(priv->mdev->dev, addr_list->tunnel_reg_id);
 969                                         if (err)
 970                                                 en_err(priv, "Failed to detach multicast address\n");
 971                                 }
 972
 973                                 /* remove from list */
 974                                 list_del(&addr_list->list);
 975                                 kfree(addr_list);
 976                         } else if (addr_list->action == MLX4_ADDR_LIST_ADD) {
 977                                 /* attach the address */
 978                                 memcpy(&mc_list[10], addr_list->addr, ETH_ALEN);
 979                                 /* needed for B0 steering support */
 980                                 mc_list[5] = priv->port;
 981                                 err = mlx4_multicast_attach(mdev->dev,
 982                                                             &priv->rss_map.indir_qp,
 983                                                             mc_list,
 984                                                             priv->port, 0,
 985                                                             MLX4_PROT_ETH,
 986                                                             &addr_list->reg_id);
 987                                 if (err)
 988                                         en_err(priv, "Fail to attach multicast address\n");
 989
 990                                 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
 991                                                                &addr_list->tunnel_reg_id);
 992                                 if (err)
 993                                         en_err(priv, "Failed to attach multicast address\n");
 994                         }
 995                 }
 996         }
 997 }
 998
 999 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1000 {
1001         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1002                                                  rx_mode_task);
1003         struct mlx4_en_dev *mdev = priv->mdev;
1004         struct net_device *dev = priv->dev;
1005
1006         mutex_lock(&mdev->state_lock);
1007         if (!mdev->device_up) {
1008                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1009                 goto out;
1010         }
1011         if (!priv->port_up) {
1012                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1013                 goto out;
1014         }
1015         if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1016                 if (priv->port_state.link_state) {
1017                         priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1018                         /* update netif baudrate */
1019                         priv->dev->if_baudrate =
1020                             IF_Mbps(priv->port_state.link_speed);
1021                         /* Important note: the following call for if_link_state_change
1022                          * is needed for interface up scenario (start port, link state
1023                          * change) */
1024                         if_link_state_change(priv->dev, LINK_STATE_UP);
1025                         en_dbg(HW, priv, "Link Up\n");
1026                 }
1027         }
1028
1029         /* Promsicuous mode: disable all filters */
1030         if ((dev->if_flags & IFF_PROMISC) ||
1031             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1032                 mlx4_en_set_promisc_mode(priv, mdev);
1033                 goto out;
1034         }
1035
1036         /* Not in promiscuous mode */
1037         if (priv->flags & MLX4_EN_FLAG_PROMISC)
1038                 mlx4_en_clear_promisc_mode(priv, mdev);
1039
1040         mlx4_en_do_multicast(priv, dev, mdev);
1041 out:
1042         mutex_unlock(&mdev->state_lock);
1043 }
1044
1045 static void mlx4_en_watchdog_timeout(void *arg)
1046 {
1047         struct mlx4_en_priv *priv = arg;
1048         struct mlx4_en_dev *mdev = priv->mdev;
1049
1050         en_dbg(DRV, priv, "Scheduling watchdog\n");
1051         queue_work(mdev->workqueue, &priv->watchdog_task);
1052         if (priv->port_up)
1053                 callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
1054                                 mlx4_en_watchdog_timeout, priv);
1055 }
1056
1057
1058
1059 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1060 {
1061         struct mlx4_en_cq *cq;
1062         int i;
1063
1064         /* If we haven't received a specific coalescing setting
1065          * (module param), we set the moderation parameters as follows:
1066          * - moder_cnt is set to the number of mtu sized packets to
1067          *   satisfy our coalescing target.
1068          * - moder_time is set to a fixed value.
1069          */
1070         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1071         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1072         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1073         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1074         en_dbg(INTR, priv, "Default coalesing params for mtu: %u - "
1075                "rx_frames:%d rx_usecs:%d\n",
1076                (unsigned)priv->dev->if_mtu, priv->rx_frames, priv->rx_usecs);
1077
1078         /* Setup cq moderation params */
1079         for (i = 0; i < priv->rx_ring_num; i++) {
1080                 cq = priv->rx_cq[i];
1081                 cq->moder_cnt = priv->rx_frames;
1082                 cq->moder_time = priv->rx_usecs;
1083                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1084                 priv->last_moder_packets[i] = 0;
1085                 priv->last_moder_bytes[i] = 0;
1086         }
1087
1088         for (i = 0; i < priv->tx_ring_num; i++) {
1089                 cq = priv->tx_cq[i];
1090                 cq->moder_cnt = priv->tx_frames;
1091                 cq->moder_time = priv->tx_usecs;
1092         }
1093
1094         /* Reset auto-moderation params */
1095         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1096         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1097         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1098         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1099         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1100         priv->adaptive_rx_coal = 1;
1101         priv->last_moder_jiffies = 0;
1102         priv->last_moder_tx_packets = 0;
1103 }
1104
1105 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1106 {
1107         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1108         struct mlx4_en_cq *cq;
1109         unsigned long packets;
1110         unsigned long rate;
1111         unsigned long avg_pkt_size;
1112         unsigned long rx_packets;
1113         unsigned long rx_bytes;
1114         unsigned long rx_pkt_diff;
1115         int moder_time;
1116         int ring, err;
1117
1118         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1119                 return;
1120
1121         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1122                 spin_lock(&priv->stats_lock);
1123                 rx_packets = priv->rx_ring[ring]->packets;
1124                 rx_bytes = priv->rx_ring[ring]->bytes;
1125                 spin_unlock(&priv->stats_lock);
1126
1127                 rx_pkt_diff = ((unsigned long) (rx_packets -
1128                                 priv->last_moder_packets[ring]));
1129                 packets = rx_pkt_diff;
1130                 rate = packets * HZ / period;
1131                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1132                                 priv->last_moder_bytes[ring])) / packets : 0;
1133
1134                 /* Apply auto-moderation only when packet rate
1135                  * exceeds a rate that it matters */
1136                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1137                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1138                         if (rate < priv->pkt_rate_low)
1139                                 moder_time = priv->rx_usecs_low;
1140                         else if (rate > priv->pkt_rate_high)
1141                                 moder_time = priv->rx_usecs_high;
1142                         else
1143                                 moder_time = (rate - priv->pkt_rate_low) *
1144                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1145                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
1146                                         priv->rx_usecs_low;
1147                 } else {
1148                         moder_time = priv->rx_usecs_low;
1149                 }
1150
1151                 if (moder_time != priv->last_moder_time[ring]) {
1152                         priv->last_moder_time[ring] = moder_time;
1153                         cq = priv->rx_cq[ring];
1154                         cq->moder_time = moder_time;
1155                         cq->moder_cnt = priv->rx_frames;
1156                         err = mlx4_en_set_cq_moder(priv, cq);
1157                         if (err)
1158                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1159                                        ring);
1160                 }
1161                 priv->last_moder_packets[ring] = rx_packets;
1162                 priv->last_moder_bytes[ring] = rx_bytes;
1163         }
1164
1165         priv->last_moder_jiffies = jiffies;
1166 }
1167
1168 static void mlx4_en_do_get_stats(struct work_struct *work)
1169 {
1170         struct delayed_work *delay = to_delayed_work(work);
1171         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1172                                                  stats_task);
1173         struct mlx4_en_dev *mdev = priv->mdev;
1174         int err;
1175
1176         mutex_lock(&mdev->state_lock);
1177         if (mdev->device_up) {
1178                 if (priv->port_up) {
1179                         if (mlx4_is_slave(mdev->dev))
1180                                 err = mlx4_en_get_vport_stats(mdev, priv->port);
1181                         else
1182                                 err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1183                         if (err)
1184                                 en_dbg(HW, priv, "Could not update stats\n");
1185
1186                         mlx4_en_auto_moderation(priv);
1187                 }
1188
1189                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1190         }
1191         mutex_unlock(&mdev->state_lock);
1192 }
1193
1194 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1195  * periodically
1196  */
1197 static void mlx4_en_service_task(struct work_struct *work)
1198 {
1199         struct delayed_work *delay = to_delayed_work(work);
1200         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1201                                                  service_task);
1202         struct mlx4_en_dev *mdev = priv->mdev;
1203
1204         mutex_lock(&mdev->state_lock);
1205         if (mdev->device_up) {
1206                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1207                                    SERVICE_TASK_DELAY);
1208         }
1209         mutex_unlock(&mdev->state_lock);
1210 }
1211
1212 static void mlx4_en_linkstate(struct work_struct *work)
1213 {
1214         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1215                                                  linkstate_task);
1216         struct mlx4_en_dev *mdev = priv->mdev;
1217         int linkstate = priv->link_state;
1218
1219         mutex_lock(&mdev->state_lock);
1220         /* If observable port state changed set carrier state and
1221          * report to system log */
1222         if (priv->last_link_state != linkstate) {
1223                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1224                         en_info(priv, "Link Down\n");
1225                         if_link_state_change(priv->dev, LINK_STATE_DOWN);
1226                         /* update netif baudrate */
1227                         priv->dev->if_baudrate = 0;
1228
1229                 /* make sure the port is up before notifying the OS.
1230                  * This is tricky since we get here on INIT_PORT and
1231                  * in such case we can't tell the OS the port is up.
1232                  * To solve this there is a call to if_link_state_change
1233                  * in set_rx_mode.
1234                  * */
1235                 } else if (priv->port_up && (linkstate == MLX4_DEV_EVENT_PORT_UP)){
1236                         if (mlx4_en_QUERY_PORT(priv->mdev, priv->port))
1237                                 en_info(priv, "Query port failed\n");
1238                         priv->dev->if_baudrate =
1239                             IF_Mbps(priv->port_state.link_speed);
1240                         en_info(priv, "Link Up\n");
1241                         if_link_state_change(priv->dev, LINK_STATE_UP);
1242                 }
1243         }
1244         priv->last_link_state = linkstate;
1245         mutex_unlock(&mdev->state_lock);
1246 }
1247
1248
1249 int mlx4_en_start_port(struct net_device *dev)
1250 {
1251         struct mlx4_en_priv *priv = netdev_priv(dev);
1252         struct mlx4_en_dev *mdev = priv->mdev;
1253         struct mlx4_en_cq *cq;
1254         struct mlx4_en_tx_ring *tx_ring;
1255         int rx_index = 0;
1256         int tx_index = 0;
1257         int err = 0;
1258         int i;
1259         int j;
1260         u8 mc_list[16] = {0};
1261
1262
1263         if (priv->port_up) {
1264                 en_dbg(DRV, priv, "start port called while port already up\n");
1265                 return 0;
1266         }
1267
1268         INIT_LIST_HEAD(&priv->mc_list);
1269         INIT_LIST_HEAD(&priv->uc_list);
1270         INIT_LIST_HEAD(&priv->curr_mc_list);
1271         INIT_LIST_HEAD(&priv->curr_uc_list);
1272         INIT_LIST_HEAD(&priv->ethtool_list);
1273
1274         /* Calculate Rx buf size */
1275         dev->if_mtu = min(dev->if_mtu, priv->max_mtu);
1276         mlx4_en_calc_rx_buf(dev);
1277         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_mb_size);
1278
1279         /* Configure rx cq's and rings */
1280         err = mlx4_en_activate_rx_rings(priv);
1281         if (err) {
1282                 en_err(priv, "Failed to activate RX rings\n");
1283                 return err;
1284         }
1285         for (i = 0; i < priv->rx_ring_num; i++) {
1286                 cq = priv->rx_cq[i];
1287
1288                 mlx4_en_cq_init_lock(cq);
1289                 err = mlx4_en_activate_cq(priv, cq, i);
1290                 if (err) {
1291                         en_err(priv, "Failed activating Rx CQ\n");
1292                         goto cq_err;
1293                 }
1294                 for (j = 0; j < cq->size; j++)
1295                         cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1296                 err = mlx4_en_set_cq_moder(priv, cq);
1297                 if (err) {
1298                         en_err(priv, "Failed setting cq moderation parameters");
1299                         mlx4_en_deactivate_cq(priv, cq);
1300                         goto cq_err;
1301                 }
1302                 mlx4_en_arm_cq(priv, cq);
1303                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1304                 ++rx_index;
1305         }
1306
1307         /* Set qp number */
1308         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1309         err = mlx4_en_get_qp(priv);
1310         if (err) {
1311                 en_err(priv, "Failed getting eth qp\n");
1312                 goto cq_err;
1313         }
1314         mdev->mac_removed[priv->port] = 0;
1315
1316         priv->counter_index =
1317                         mlx4_get_default_counter_index(mdev->dev, priv->port);
1318
1319         err = mlx4_en_config_rss_steer(priv);
1320         if (err) {
1321                 en_err(priv, "Failed configuring rss steering\n");
1322                 goto mac_err;
1323         }
1324
1325         err = mlx4_en_create_drop_qp(priv);
1326         if (err)
1327                 goto rss_err;
1328
1329         /* Configure tx cq's and rings */
1330         for (i = 0; i < priv->tx_ring_num; i++) {
1331                 /* Configure cq */
1332                 cq = priv->tx_cq[i];
1333                 err = mlx4_en_activate_cq(priv, cq, i);
1334                 if (err) {
1335                         en_err(priv, "Failed activating Tx CQ\n");
1336                         goto tx_err;
1337                 }
1338                 err = mlx4_en_set_cq_moder(priv, cq);
1339                 if (err) {
1340                         en_err(priv, "Failed setting cq moderation parameters");
1341                         mlx4_en_deactivate_cq(priv, cq);
1342                         goto tx_err;
1343                 }
1344                 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1345                 cq->buf->wqe_index = cpu_to_be16(0xffff);
1346
1347                 /* Configure ring */
1348                 tx_ring = priv->tx_ring[i];
1349
1350                 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1351                                                i / priv->num_tx_rings_p_up);
1352                 if (err) {
1353                         en_err(priv, "Failed activating Tx ring %d\n", i);
1354                         mlx4_en_deactivate_cq(priv, cq);
1355                         goto tx_err;
1356                 }
1357
1358                 /* Arm CQ for TX completions */
1359                 mlx4_en_arm_cq(priv, cq);
1360
1361                 /* Set initial ownership of all Tx TXBBs to SW (1) */
1362                 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1363                         *((u32 *) (tx_ring->buf + j)) = INIT_OWNER_BIT;
1364                 ++tx_index;
1365         }
1366
1367         /* Configure port */
1368         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1369                                     priv->rx_mb_size,
1370                                     priv->prof->tx_pause,
1371                                     priv->prof->tx_ppp,
1372                                     priv->prof->rx_pause,
1373                                     priv->prof->rx_ppp);
1374         if (err) {
1375                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1376                        priv->port, err);
1377                 goto tx_err;
1378         }
1379         /* Set default qp number */
1380         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1381         if (err) {
1382                 en_err(priv, "Failed setting default qp numbers\n");
1383                 goto tx_err;
1384         }
1385
1386         /* Init port */
1387         en_dbg(HW, priv, "Initializing port\n");
1388         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1389         if (err) {
1390                 en_err(priv, "Failed Initializing port\n");
1391                 goto tx_err;
1392         }
1393
1394         /* Attach rx QP to bradcast address */
1395         memset(&mc_list[10], 0xff, ETH_ALEN);
1396         mc_list[5] = priv->port; /* needed for B0 steering support */
1397         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1398                                   priv->port, 0, MLX4_PROT_ETH,
1399                                   &priv->broadcast_id))
1400                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1401
1402         /* Must redo promiscuous mode setup. */
1403         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1404
1405         /* Schedule multicast task to populate multicast list */
1406         queue_work(mdev->workqueue, &priv->rx_mode_task);
1407
1408         priv->port_up = true;
1409
1410         /* Enable the queues. */
1411         dev->if_drv_flags &= ~IFF_DRV_OACTIVE;
1412         dev->if_drv_flags |= IFF_DRV_RUNNING;
1413 #ifdef CONFIG_DEBUG_FS
1414         mlx4_en_create_debug_files(priv);
1415 #endif
1416         callout_reset(&priv->watchdog_timer, MLX4_EN_WATCHDOG_TIMEOUT,
1417                     mlx4_en_watchdog_timeout, priv);
1418
1419
1420         return 0;
1421
1422 tx_err:
1423         while (tx_index--) {
1424                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1425                 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1426         }
1427         mlx4_en_destroy_drop_qp(priv);
1428 rss_err:
1429         mlx4_en_release_rss_steer(priv);
1430 mac_err:
1431         mlx4_en_put_qp(priv);
1432 cq_err:
1433         while (rx_index--)
1434                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1435         for (i = 0; i < priv->rx_ring_num; i++)
1436                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1437
1438         return err; /* need to close devices */
1439 }
1440
1441
1442 void mlx4_en_stop_port(struct net_device *dev)
1443 {
1444         struct mlx4_en_priv *priv = netdev_priv(dev);
1445         struct mlx4_en_dev *mdev = priv->mdev;
1446         struct mlx4_en_addr_list *addr_list, *tmp;
1447         int i;
1448         u8 mc_list[16] = {0};
1449
1450         if (!priv->port_up) {
1451                 en_dbg(DRV, priv, "stop port called while port already down\n");
1452                 return;
1453         }
1454
1455 #ifdef CONFIG_DEBUG_FS
1456         mlx4_en_delete_debug_files(priv);
1457 #endif
1458
1459         /* close port*/
1460         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1461
1462         /* Set port as not active */
1463         priv->port_up = false;
1464         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1465
1466         /* Promsicuous mode */
1467         if (mdev->dev->caps.steering_mode ==
1468             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1469                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1470                                  MLX4_EN_FLAG_MC_PROMISC);
1471                 mlx4_flow_steer_promisc_remove(mdev->dev,
1472                                                priv->port,
1473                                                MLX4_FS_ALL_DEFAULT);
1474                 mlx4_flow_steer_promisc_remove(mdev->dev,
1475                                                priv->port,
1476                                                MLX4_FS_MC_DEFAULT);
1477         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1478                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1479
1480                 /* Disable promiscouos mode */
1481                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1482                                             priv->port);
1483
1484                 /* Disable Multicast promisc */
1485                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1486                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1487                                                       priv->port);
1488                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1489                 }
1490         }
1491
1492         /* Detach All unicasts */
1493         list_for_each_entry(addr_list, &priv->curr_uc_list, list) {
1494                 mlx4_en_uc_steer_release(priv, addr_list->addr,
1495                                          priv->rss_map.indir_qp.qpn,
1496                                          addr_list->reg_id);
1497         }
1498         mlx4_en_clear_uclist(dev);
1499         list_for_each_entry_safe(addr_list, tmp, &priv->curr_uc_list, list) {
1500                 list_del(&addr_list->list);
1501                 kfree(addr_list);
1502         }
1503
1504         /* Detach All multicasts */
1505         memset(&mc_list[10], 0xff, ETH_ALEN);
1506         mc_list[5] = priv->port; /* needed for B0 steering support */
1507         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1508                               MLX4_PROT_ETH, priv->broadcast_id);
1509         list_for_each_entry(addr_list, &priv->curr_mc_list, list) {
1510                 memcpy(&mc_list[10], addr_list->addr, ETH_ALEN);
1511                 mc_list[5] = priv->port;
1512                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1513                                       mc_list, MLX4_PROT_ETH, addr_list->reg_id);
1514         }
1515         mlx4_en_clear_mclist(dev);
1516         list_for_each_entry_safe(addr_list, tmp, &priv->curr_mc_list, list) {
1517                 list_del(&addr_list->list);
1518                 kfree(addr_list);
1519         }
1520
1521         /* Flush multicast filter */
1522         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1523         mlx4_en_destroy_drop_qp(priv);
1524
1525         /* Free TX Rings */
1526         for (i = 0; i < priv->tx_ring_num; i++) {
1527                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1528                 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1529         }
1530         msleep(10);
1531
1532         for (i = 0; i < priv->tx_ring_num; i++)
1533                 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1534
1535         /* Free RSS qps */
1536         mlx4_en_release_rss_steer(priv);
1537
1538         /* Unregister Mac address for the port */
1539         mlx4_en_put_qp(priv);
1540         mdev->mac_removed[priv->port] = 1;
1541
1542         /* Free RX Rings */
1543         for (i = 0; i < priv->rx_ring_num; i++) {
1544                 struct mlx4_en_cq *cq = priv->rx_cq[i];
1545                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1546                 mlx4_en_deactivate_cq(priv, cq);
1547         }
1548
1549         callout_stop(&priv->watchdog_timer);
1550
1551         dev->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
1552 }
1553
1554 static void mlx4_en_restart(struct work_struct *work)
1555 {
1556         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1557                                                  watchdog_task);
1558         struct mlx4_en_dev *mdev = priv->mdev;
1559         struct net_device *dev = priv->dev;
1560         struct mlx4_en_tx_ring *ring;
1561         int i;
1562
1563
1564         if (priv->blocked == 0 || priv->port_up == 0)
1565                 return;
1566         for (i = 0; i < priv->tx_ring_num; i++) {
1567                 ring = priv->tx_ring[i];
1568                 if (ring->blocked &&
1569                                 ring->watchdog_time + MLX4_EN_WATCHDOG_TIMEOUT < ticks)
1570                         goto reset;
1571         }
1572         return;
1573
1574 reset:
1575         priv->port_stats.tx_timeout++;
1576         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1577
1578         mutex_lock(&mdev->state_lock);
1579         if (priv->port_up) {
1580                 mlx4_en_stop_port(dev);
1581                 //for (i = 0; i < priv->tx_ring_num; i++)
1582                 //        netdev_tx_reset_queue(priv->tx_ring[i]->tx_queue);
1583                 if (mlx4_en_start_port(dev))
1584                         en_err(priv, "Failed restarting port %d\n", priv->port);
1585         }
1586         mutex_unlock(&mdev->state_lock);
1587 }
1588
1589 static void mlx4_en_clear_stats(struct net_device *dev)
1590 {
1591         struct mlx4_en_priv *priv = netdev_priv(dev);
1592         struct mlx4_en_dev *mdev = priv->mdev;
1593         int i;
1594
1595         if (!mlx4_is_slave(mdev->dev))
1596                 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1597                         en_dbg(HW, priv, "Failed dumping statistics\n");
1598
1599         memset(&priv->pstats, 0, sizeof(priv->pstats));
1600         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1601         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1602         memset(&priv->vport_stats, 0, sizeof(priv->vport_stats));
1603
1604         for (i = 0; i < priv->tx_ring_num; i++) {
1605                 priv->tx_ring[i]->bytes = 0;
1606                 priv->tx_ring[i]->packets = 0;
1607                 priv->tx_ring[i]->tx_csum = 0;
1608                 priv->tx_ring[i]->oversized_packets = 0;
1609         }
1610         for (i = 0; i < priv->rx_ring_num; i++) {
1611                 priv->rx_ring[i]->bytes = 0;
1612                 priv->rx_ring[i]->packets = 0;
1613                 priv->rx_ring[i]->csum_ok = 0;
1614                 priv->rx_ring[i]->csum_none = 0;
1615         }
1616 }
1617
1618 static void mlx4_en_open(void* arg)
1619 {
1620
1621         struct mlx4_en_priv *priv;
1622         struct mlx4_en_dev *mdev;
1623         struct net_device *dev;
1624         int err = 0;
1625
1626         priv = arg;
1627         mdev = priv->mdev;
1628         dev = priv->dev;
1629
1630
1631         mutex_lock(&mdev->state_lock);
1632
1633         if (!mdev->device_up) {
1634                 en_err(priv, "Cannot open - device down/disabled\n");
1635                 goto out;
1636         }
1637
1638         /* Reset HW statistics and SW counters */
1639         mlx4_en_clear_stats(dev);
1640
1641         err = mlx4_en_start_port(dev);
1642         if (err)
1643                 en_err(priv, "Failed starting port:%d\n", priv->port);
1644
1645 out:
1646         mutex_unlock(&mdev->state_lock);
1647         return;
1648 }
1649
1650 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1651 {
1652         int i;
1653
1654 #ifdef CONFIG_RFS_ACCEL
1655         if (priv->dev->rx_cpu_rmap) {
1656                 free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1657                 priv->dev->rx_cpu_rmap = NULL;
1658         }
1659 #endif
1660
1661         for (i = 0; i < priv->tx_ring_num; i++) {
1662                 if (priv->tx_ring && priv->tx_ring[i])
1663                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1664                 if (priv->tx_cq && priv->tx_cq[i])
1665                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1666         }
1667
1668         for (i = 0; i < priv->rx_ring_num; i++) {
1669                 if (priv->rx_ring[i])
1670                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1671                                 priv->prof->rx_ring_size, priv->stride);
1672                 if (priv->rx_cq[i])
1673                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1674         }
1675
1676         if (priv->stat_sysctl != NULL)
1677                 sysctl_ctx_free(&priv->stat_ctx);
1678 }
1679
1680 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1681 {
1682         struct mlx4_en_port_profile *prof = priv->prof;
1683         int i;
1684         int node = 0;
1685
1686         /* Create rx Rings */
1687         for (i = 0; i < priv->rx_ring_num; i++) {
1688                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
1689                                       prof->rx_ring_size, i, RX, node))
1690                         goto err;
1691
1692                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
1693                                            prof->rx_ring_size, node))
1694                         goto err;
1695         }
1696
1697         /* Create tx Rings */
1698         for (i = 0; i < priv->tx_ring_num; i++) {
1699                 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1700                                       prof->tx_ring_size, i, TX, node))
1701                         goto err;
1702
1703                 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
1704                                            prof->tx_ring_size, TXBB_SIZE, node, i))
1705                         goto err;
1706         }
1707
1708 #ifdef CONFIG_RFS_ACCEL
1709         priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->rx_ring_num);
1710         if (!priv->dev->rx_cpu_rmap)
1711                 goto err;
1712 #endif
1713         /* Re-create stat sysctls in case the number of rings changed. */
1714         mlx4_en_sysctl_stat(priv);
1715         return 0;
1716
1717 err:
1718         en_err(priv, "Failed to allocate NIC resources\n");
1719         for (i = 0; i < priv->rx_ring_num; i++) {
1720                 if (priv->rx_ring[i])
1721                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1722                                                 prof->rx_ring_size,
1723                                                 priv->stride);
1724                 if (priv->rx_cq[i])
1725                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1726         }
1727         for (i = 0; i < priv->tx_ring_num; i++) {
1728                 if (priv->tx_ring[i])
1729                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1730                 if (priv->tx_cq[i])
1731                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1732         }
1733         priv->port_up = false;
1734         return -ENOMEM;
1735 }
1736
1737 struct en_port_attribute {
1738         struct attribute attr;
1739         ssize_t (*show)(struct en_port *, struct en_port_attribute *, char *buf);
1740         ssize_t (*store)(struct en_port *, struct en_port_attribute *, char *buf, size_t count);
1741 };
1742
1743 #define PORT_ATTR_RO(_name) \
1744 struct en_port_attribute en_port_attr_##_name = __ATTR_RO(_name)
1745
1746 #define EN_PORT_ATTR(_name, _mode, _show, _store) \
1747 struct en_port_attribute en_port_attr_##_name = __ATTR(_name, _mode, _show, _store)
1748
1749 void mlx4_en_destroy_netdev(struct net_device *dev)
1750 {
1751         struct mlx4_en_priv *priv = netdev_priv(dev);
1752         struct mlx4_en_dev *mdev = priv->mdev;
1753
1754         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
1755
1756         /* don't allow more IOCTLs */
1757         priv->gone = 1;
1758
1759         /* XXX wait a bit to allow IOCTL handlers to complete */
1760         pause("W", hz);
1761
1762         if (priv->vlan_attach != NULL)
1763                 EVENTHANDLER_DEREGISTER(vlan_config, priv->vlan_attach);
1764         if (priv->vlan_detach != NULL)
1765                 EVENTHANDLER_DEREGISTER(vlan_unconfig, priv->vlan_detach);
1766
1767         /* Unregister device - this will close the port if it was up */
1768         if (priv->registered) {
1769                 mutex_lock(&mdev->state_lock);
1770                 ether_ifdetach(dev);
1771                 mutex_unlock(&mdev->state_lock);
1772         }
1773
1774         mutex_lock(&mdev->state_lock);
1775         mlx4_en_stop_port(dev);
1776         mutex_unlock(&mdev->state_lock);
1777
1778         if (priv->allocated)
1779                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
1780
1781         cancel_delayed_work(&priv->stats_task);
1782         cancel_delayed_work(&priv->service_task);
1783         /* flush any pending task for this netdev */
1784         flush_workqueue(mdev->workqueue);
1785         callout_drain(&priv->watchdog_timer);
1786
1787         /* Detach the netdev so tasks would not attempt to access it */
1788         mutex_lock(&mdev->state_lock);
1789         mdev->pndev[priv->port] = NULL;
1790         mutex_unlock(&mdev->state_lock);
1791
1792
1793         mlx4_en_free_resources(priv);
1794
1795         /* freeing the sysctl conf cannot be called from within mlx4_en_free_resources */
1796         if (priv->conf_sysctl != NULL)
1797                 sysctl_ctx_free(&priv->conf_ctx);
1798
1799         kfree(priv->tx_ring);
1800         kfree(priv->tx_cq);
1801
1802         kfree(priv);
1803         if_free(dev);
1804
1805 }
1806
1807 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
1808 {
1809         struct mlx4_en_priv *priv = netdev_priv(dev);
1810         struct mlx4_en_dev *mdev = priv->mdev;
1811         int err = 0;
1812
1813         en_dbg(DRV, priv, "Change MTU called - current:%u new:%u\n",
1814                (unsigned)dev->if_mtu, (unsigned)new_mtu);
1815
1816         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
1817                 en_err(priv, "Bad MTU size:%d, max %u.\n", new_mtu,
1818                     priv->max_mtu);
1819                 return -EPERM;
1820         }
1821         mutex_lock(&mdev->state_lock);
1822         dev->if_mtu = new_mtu;
1823         if (dev->if_drv_flags & IFF_DRV_RUNNING) {
1824                 if (!mdev->device_up) {
1825                         /* NIC is probably restarting - let watchdog task reset
1826                          *                          * the port */
1827                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
1828                 } else {
1829                         mlx4_en_stop_port(dev);
1830                         err = mlx4_en_start_port(dev);
1831                         if (err) {
1832                                 en_err(priv, "Failed restarting port:%d\n",
1833                                                 priv->port);
1834                                 queue_work(mdev->workqueue, &priv->watchdog_task);
1835                         }
1836                 }
1837         }
1838         mutex_unlock(&mdev->state_lock);
1839         return 0;
1840 }
1841
1842 static int mlx4_en_calc_media(struct mlx4_en_priv *priv)
1843 {
1844         int trans_type;
1845         int active;
1846
1847         active = IFM_ETHER;
1848         if (priv->last_link_state == MLX4_DEV_EVENT_PORT_DOWN)
1849                 return (active);
1850         active |= IFM_FDX;
1851         trans_type = priv->port_state.transceiver;
1852         /* XXX I don't know all of the transceiver values. */
1853         switch (priv->port_state.link_speed) {
1854         case 100:
1855                 active |= IFM_100_T;
1856                 break;
1857         case 1000:
1858                 active |= IFM_1000_T;
1859                 break;
1860         case 10000:
1861                 if (trans_type > 0 && trans_type <= 0xC)
1862                         active |= IFM_10G_SR;
1863                 else if (trans_type == 0x80 || trans_type == 0)
1864                         active |= IFM_10G_CX4;
1865                 break;
1866         case 40000:
1867                 active |= IFM_40G_CR4;
1868                 break;
1869         }
1870         if (priv->prof->tx_pause)
1871                 active |= IFM_ETH_TXPAUSE;
1872         if (priv->prof->rx_pause)
1873                 active |= IFM_ETH_RXPAUSE;
1874
1875         return (active);
1876 }
1877
1878 static void mlx4_en_media_status(struct ifnet *dev, struct ifmediareq *ifmr)
1879 {
1880         struct mlx4_en_priv *priv;
1881
1882         priv = dev->if_softc;
1883         ifmr->ifm_status = IFM_AVALID;
1884         if (priv->last_link_state != MLX4_DEV_EVENT_PORT_DOWN)
1885                 ifmr->ifm_status |= IFM_ACTIVE;
1886         ifmr->ifm_active = mlx4_en_calc_media(priv);
1887
1888         return;
1889 }
1890
1891 static int mlx4_en_media_change(struct ifnet *dev)
1892 {
1893         struct mlx4_en_priv *priv;
1894         struct ifmedia *ifm;
1895         int rxpause;
1896         int txpause;
1897         int error;
1898
1899         priv = dev->if_softc;
1900         ifm = &priv->media;
1901         rxpause = txpause = 0;
1902         error = 0;
1903
1904         if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
1905                 return (EINVAL);
1906         switch (IFM_SUBTYPE(ifm->ifm_media)) {
1907         case IFM_AUTO:
1908                 break;
1909         case IFM_10G_SR:
1910         case IFM_10G_CX4:
1911         case IFM_1000_T:
1912         case IFM_40G_CR4:
1913                 if ((IFM_SUBTYPE(ifm->ifm_media)
1914                         == IFM_SUBTYPE(mlx4_en_calc_media(priv)))
1915                         && (ifm->ifm_media & IFM_FDX))
1916                         break;
1917                 /* Fallthrough */
1918         default:
1919                 printf("%s: Only auto media type\n", if_name(dev));
1920                 return (EINVAL);
1921         }
1922         /* Allow user to set/clear pause */
1923         if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_RXPAUSE)
1924                 rxpause = 1;
1925         if (IFM_OPTIONS(ifm->ifm_media) & IFM_ETH_TXPAUSE)
1926                 txpause = 1;
1927         if (priv->prof->tx_pause != txpause || priv->prof->rx_pause != rxpause) {
1928                 priv->prof->tx_pause = txpause;
1929                 priv->prof->rx_pause = rxpause;
1930                 error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
1931                      priv->rx_mb_size + ETHER_CRC_LEN, priv->prof->tx_pause,
1932                      priv->prof->tx_ppp, priv->prof->rx_pause,
1933                      priv->prof->rx_ppp);
1934         }
1935         return (error);
1936 }
1937
1938 static int mlx4_en_ioctl(struct ifnet *dev, u_long command, caddr_t data)
1939 {
1940         struct mlx4_en_priv *priv;
1941         struct mlx4_en_dev *mdev;
1942         struct ifreq *ifr;
1943         int error;
1944         int mask;
1945         struct ifrsskey *ifrk;
1946         const u32 *key;
1947         struct ifrsshash *ifrh;
1948         u8 rss_mask;
1949
1950         error = 0;
1951         mask = 0;
1952         priv = dev->if_softc;
1953
1954         /* check if detaching */
1955         if (priv == NULL || priv->gone != 0)
1956                 return (ENXIO);
1957
1958         mdev = priv->mdev;
1959         ifr = (struct ifreq *) data;
1960
1961         switch (command) {
1962         case SIOCSIFMTU:
1963                 error = -mlx4_en_change_mtu(dev, ifr->ifr_mtu);
1964                 break;
1965         case SIOCSIFFLAGS:
1966                 if (dev->if_flags & IFF_UP) {
1967                         if ((dev->if_drv_flags & IFF_DRV_RUNNING) == 0) {
1968                                 mutex_lock(&mdev->state_lock);
1969                                 mlx4_en_start_port(dev);
1970                                 mutex_unlock(&mdev->state_lock);
1971                         } else {
1972                                 mlx4_en_set_rx_mode(dev);
1973                         }
1974                 } else {
1975                         mutex_lock(&mdev->state_lock);
1976                         if (dev->if_drv_flags & IFF_DRV_RUNNING) {
1977                                 mlx4_en_stop_port(dev);
1978                                 if_link_state_change(dev, LINK_STATE_DOWN);
1979                         }
1980                         mutex_unlock(&mdev->state_lock);
1981                 }
1982                 break;
1983         case SIOCADDMULTI:
1984         case SIOCDELMULTI:
1985                 mlx4_en_set_rx_mode(dev);
1986                 break;
1987         case SIOCSIFMEDIA:
1988         case SIOCGIFMEDIA:
1989                 error = ifmedia_ioctl(dev, ifr, &priv->media, command);
1990                 break;
1991         case SIOCSIFCAP:
1992                 mutex_lock(&mdev->state_lock);
1993                 mask = ifr->ifr_reqcap ^ dev->if_capenable;
1994                 if (mask & IFCAP_TXCSUM) {
1995                         dev->if_capenable ^= IFCAP_TXCSUM;
1996                         dev->if_hwassist ^= (CSUM_TCP | CSUM_UDP | CSUM_IP);
1997
1998                         if (IFCAP_TSO4 & dev->if_capenable &&
1999                             !(IFCAP_TXCSUM & dev->if_capenable)) {
2000                                 dev->if_capenable &= ~IFCAP_TSO4;
2001                                 dev->if_hwassist &= ~CSUM_IP_TSO;
2002                                 if_printf(dev,
2003                                     "tso4 disabled due to -txcsum.\n");
2004                         }
2005                 }
2006                 if (mask & IFCAP_TXCSUM_IPV6) {
2007                         dev->if_capenable ^= IFCAP_TXCSUM_IPV6;
2008                         dev->if_hwassist ^= (CSUM_UDP_IPV6 | CSUM_TCP_IPV6);
2009
2010                         if (IFCAP_TSO6 & dev->if_capenable &&
2011                             !(IFCAP_TXCSUM_IPV6 & dev->if_capenable)) {
2012                                 dev->if_capenable &= ~IFCAP_TSO6;
2013                                 dev->if_hwassist &= ~CSUM_IP6_TSO;
2014                                 if_printf(dev,
2015                                     "tso6 disabled due to -txcsum6.\n");
2016                         }
2017                 }
2018                 if (mask & IFCAP_RXCSUM)
2019                         dev->if_capenable ^= IFCAP_RXCSUM;
2020                 if (mask & IFCAP_RXCSUM_IPV6)
2021                         dev->if_capenable ^= IFCAP_RXCSUM_IPV6;
2022
2023                 if (mask & IFCAP_TSO4) {
2024                         if (!(IFCAP_TSO4 & dev->if_capenable) &&
2025                             !(IFCAP_TXCSUM & dev->if_capenable)) {
2026                                 if_printf(dev, "enable txcsum first.\n");
2027                                 error = EAGAIN;
2028                                 goto out;
2029                         }
2030                         dev->if_capenable ^= IFCAP_TSO4;
2031                         dev->if_hwassist ^= CSUM_IP_TSO;
2032                 }
2033                 if (mask & IFCAP_TSO6) {
2034                         if (!(IFCAP_TSO6 & dev->if_capenable) &&
2035                             !(IFCAP_TXCSUM_IPV6 & dev->if_capenable)) {
2036                                 if_printf(dev, "enable txcsum6 first.\n");
2037                                 error = EAGAIN;
2038                                 goto out;
2039                         }
2040                         dev->if_capenable ^= IFCAP_TSO6;
2041                         dev->if_hwassist ^= CSUM_IP6_TSO;
2042                 }
2043                 if (mask & IFCAP_LRO)
2044                         dev->if_capenable ^= IFCAP_LRO;
2045                 if (mask & IFCAP_VLAN_HWTAGGING)
2046                         dev->if_capenable ^= IFCAP_VLAN_HWTAGGING;
2047                 if (mask & IFCAP_VLAN_HWFILTER)
2048                         dev->if_capenable ^= IFCAP_VLAN_HWFILTER;
2049                 if (mask & IFCAP_WOL_MAGIC)
2050                         dev->if_capenable ^= IFCAP_WOL_MAGIC;
2051                 if (dev->if_drv_flags & IFF_DRV_RUNNING)
2052                         mlx4_en_start_port(dev);
2053 out:
2054                 mutex_unlock(&mdev->state_lock);
2055                 VLAN_CAPABILITIES(dev);
2056                 break;
2057 #if __FreeBSD_version >= 1100036
2058         case SIOCGI2C: {
2059                 struct ifi2creq i2c;
2060
2061                 error = copyin(ifr->ifr_data, &i2c, sizeof(i2c));
2062                 if (error)
2063                         break;
2064                 if (i2c.len > sizeof(i2c.data)) {
2065                         error = EINVAL;
2066                         break;
2067                 }
2068                 /*
2069                  * Note that we ignore i2c.addr here. The driver hardcodes
2070                  * the address to 0x50, while standard expects it to be 0xA0.
2071                  */
2072                 error = mlx4_get_module_info(mdev->dev, priv->port,
2073                     i2c.offset, i2c.len, i2c.data);
2074                 if (error < 0) {
2075                         error = -error;
2076                         break;
2077                 }
2078                 error = copyout(&i2c, ifr->ifr_data, sizeof(i2c));
2079                 break;
2080         }
2081 #endif
2082         case SIOCGIFRSSKEY:
2083                 ifrk = (struct ifrsskey *)data;
2084                 ifrk->ifrk_func = RSS_FUNC_TOEPLITZ;
2085                 mutex_lock(&mdev->state_lock);
2086                 key = mlx4_en_get_rss_key(priv, &ifrk->ifrk_keylen);
2087                 if (ifrk->ifrk_keylen > RSS_KEYLEN)
2088                         error = EINVAL;
2089                 else
2090                         memcpy(ifrk->ifrk_key, key, ifrk->ifrk_keylen);
2091                 mutex_unlock(&mdev->state_lock);
2092                 break;
2093
2094         case SIOCGIFRSSHASH:
2095                 mutex_lock(&mdev->state_lock);
2096                 rss_mask = mlx4_en_get_rss_mask(priv);
2097                 mutex_unlock(&mdev->state_lock);
2098                 ifrh = (struct ifrsshash *)data;
2099                 ifrh->ifrh_func = RSS_FUNC_TOEPLITZ;
2100                 ifrh->ifrh_types = 0;
2101                 if (rss_mask & MLX4_RSS_IPV4)
2102                         ifrh->ifrh_types |= RSS_TYPE_IPV4;
2103                 if (rss_mask & MLX4_RSS_TCP_IPV4)
2104                         ifrh->ifrh_types |= RSS_TYPE_TCP_IPV4;
2105                 if (rss_mask & MLX4_RSS_IPV6)
2106                         ifrh->ifrh_types |= RSS_TYPE_IPV6;
2107                 if (rss_mask & MLX4_RSS_TCP_IPV6)
2108                         ifrh->ifrh_types |= RSS_TYPE_TCP_IPV6;
2109                 if (rss_mask & MLX4_RSS_UDP_IPV4)
2110                         ifrh->ifrh_types |= RSS_TYPE_UDP_IPV4;
2111                 if (rss_mask & MLX4_RSS_UDP_IPV6)
2112                         ifrh->ifrh_types |= RSS_TYPE_UDP_IPV6;
2113                 break;
2114
2115         default:
2116                 error = ether_ioctl(dev, command, data);
2117                 break;
2118         }
2119
2120         return (error);
2121 }
2122
2123
2124 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2125                         struct mlx4_en_port_profile *prof)
2126 {
2127         struct net_device *dev;
2128         struct mlx4_en_priv *priv;
2129         uint8_t dev_addr[ETHER_ADDR_LEN];
2130         int err;
2131         int i;
2132
2133         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
2134         dev = priv->dev = if_alloc(IFT_ETHER);
2135         if (dev == NULL) {
2136                 en_err(priv, "Net device allocation failed\n");
2137                 kfree(priv);
2138                 return -ENOMEM;
2139         }
2140         dev->if_softc = priv;
2141         if_initname(dev, "mlxen", (device_get_unit(
2142             mdev->pdev->dev.bsddev) * MLX4_MAX_PORTS) + port - 1);
2143         dev->if_mtu = ETHERMTU;
2144         dev->if_init = mlx4_en_open;
2145         dev->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
2146         dev->if_ioctl = mlx4_en_ioctl;
2147         dev->if_transmit = mlx4_en_transmit;
2148         dev->if_qflush = mlx4_en_qflush;
2149         dev->if_snd.ifq_maxlen = prof->tx_ring_size;
2150
2151         /*
2152          * Initialize driver private data
2153          */
2154         priv->counter_index = 0xff;
2155         spin_lock_init(&priv->stats_lock);
2156         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2157         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2158         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2159         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2160         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2161         callout_init(&priv->watchdog_timer, 1);
2162 #ifdef CONFIG_RFS_ACCEL
2163         INIT_LIST_HEAD(&priv->filters);
2164         spin_lock_init(&priv->filters_lock);
2165 #endif
2166
2167         priv->msg_enable = MLX4_EN_MSG_LEVEL;
2168         priv->dev = dev;
2169         priv->mdev = mdev;
2170         priv->ddev = &mdev->pdev->dev;
2171         priv->prof = prof;
2172         priv->port = port;
2173         priv->port_up = false;
2174         priv->flags = prof->flags;
2175
2176         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2177         priv->tx_ring_num = prof->tx_ring_num;
2178         priv->tx_ring = kcalloc(MAX_TX_RINGS,
2179                                 sizeof(struct mlx4_en_tx_ring *), GFP_KERNEL);
2180         if (!priv->tx_ring) {
2181                 err = -ENOMEM;
2182                 goto out;
2183         }
2184         priv->tx_cq = kcalloc(sizeof(struct mlx4_en_cq *), MAX_TX_RINGS,
2185                         GFP_KERNEL);
2186         if (!priv->tx_cq) {
2187                 err = -ENOMEM;
2188                 goto out;
2189         }
2190
2191         priv->rx_ring_num = prof->rx_ring_num;
2192         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2193         priv->mac_index = -1;
2194         priv->last_ifq_jiffies = 0;
2195         priv->if_counters_rx_errors = 0;
2196         priv->if_counters_rx_no_buffer = 0;
2197 #ifdef CONFIG_MLX4_EN_DCB
2198         if (!mlx4_is_slave(priv->mdev->dev)) {
2199                 priv->dcbx_cap = DCB_CAP_DCBX_HOST;
2200                 priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
2201                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
2202                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2203                 } else {
2204                         en_info(priv, "QoS disabled - no HW support\n");
2205                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2206                 }
2207         }
2208 #endif
2209
2210         /* Query for default mac and max mtu */
2211         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2212         priv->mac = mdev->dev->caps.def_mac[priv->port];
2213         if (ILLEGAL_MAC(priv->mac)) {
2214 #if BITS_PER_LONG == 64
2215                 en_err(priv, "Port: %d, invalid mac burned: 0x%lx, quiting\n",
2216                                 priv->port, priv->mac);
2217 #elif BITS_PER_LONG == 32
2218                 en_err(priv, "Port: %d, invalid mac burned: 0x%llx, quiting\n",
2219                                 priv->port, priv->mac);
2220 #endif
2221                 err = -EINVAL;
2222                 goto out;
2223         }
2224
2225         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2226                                           DS_SIZE);
2227
2228         mlx4_en_sysctl_conf(priv);
2229
2230         err = mlx4_en_alloc_resources(priv);
2231         if (err)
2232                 goto out;
2233
2234         /* Allocate page for receive rings */
2235         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2236                                 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2237         if (err) {
2238                 en_err(priv, "Failed to allocate page for rx qps\n");
2239                 goto out;
2240         }
2241         priv->allocated = 1;
2242
2243         /*
2244          * Set driver features
2245          */
2246         dev->if_capabilities |= IFCAP_HWCSUM | IFCAP_HWCSUM_IPV6;
2247         dev->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING;
2248         dev->if_capabilities |= IFCAP_VLAN_HWCSUM | IFCAP_VLAN_HWFILTER;
2249         dev->if_capabilities |= IFCAP_LINKSTATE | IFCAP_JUMBO_MTU;
2250         dev->if_capabilities |= IFCAP_LRO;
2251         dev->if_capabilities |= IFCAP_HWSTATS;
2252
2253         if (mdev->LSO_support)
2254                 dev->if_capabilities |= IFCAP_TSO4 | IFCAP_TSO6 | IFCAP_VLAN_HWTSO;
2255
2256 #if __FreeBSD_version >= 1100000
2257         /* set TSO limits so that we don't have to drop TX packets */
2258         dev->if_hw_tsomax = MLX4_EN_TX_MAX_PAYLOAD_SIZE - (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN) /* hdr */;
2259         dev->if_hw_tsomaxsegcount = MLX4_EN_TX_MAX_MBUF_FRAGS - 1 /* hdr */;
2260         dev->if_hw_tsomaxsegsize = MLX4_EN_TX_MAX_MBUF_SIZE;
2261 #endif
2262
2263         dev->if_capenable = dev->if_capabilities;
2264
2265         dev->if_hwassist = 0;
2266         if (dev->if_capenable & (IFCAP_TSO4 | IFCAP_TSO6))
2267                 dev->if_hwassist |= CSUM_TSO;
2268         if (dev->if_capenable & IFCAP_TXCSUM)
2269                 dev->if_hwassist |= (CSUM_TCP | CSUM_UDP | CSUM_IP);
2270         if (dev->if_capenable & IFCAP_TXCSUM_IPV6)
2271                 dev->if_hwassist |= (CSUM_UDP_IPV6 | CSUM_TCP_IPV6);
2272
2273
2274         /* Register for VLAN events */
2275         priv->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
2276             mlx4_en_vlan_rx_add_vid, priv, EVENTHANDLER_PRI_FIRST);
2277         priv->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
2278             mlx4_en_vlan_rx_kill_vid, priv, EVENTHANDLER_PRI_FIRST);
2279
2280         mdev->pndev[priv->port] = dev;
2281
2282         priv->last_link_state = MLX4_DEV_EVENT_PORT_DOWN;
2283         mlx4_en_set_default_moderation(priv);
2284
2285         /* Set default MAC */
2286         for (i = 0; i < ETHER_ADDR_LEN; i++)
2287                 dev_addr[ETHER_ADDR_LEN - 1 - i] = (u8) (priv->mac >> (8 * i));
2288
2289
2290         ether_ifattach(dev, dev_addr);
2291         if_link_state_change(dev, LINK_STATE_DOWN);
2292         ifmedia_init(&priv->media, IFM_IMASK | IFM_ETH_FMASK,
2293             mlx4_en_media_change, mlx4_en_media_status);
2294         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_1000_T, 0, NULL);
2295         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_SR, 0, NULL);
2296         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_10G_CX4, 0, NULL);
2297         ifmedia_add(&priv->media, IFM_ETHER | IFM_FDX | IFM_40G_CR4, 0, NULL);
2298         ifmedia_add(&priv->media, IFM_ETHER | IFM_AUTO, 0, NULL);
2299         ifmedia_set(&priv->media, IFM_ETHER | IFM_AUTO);
2300
2301         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2302         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2303
2304         priv->registered = 1;
2305
2306         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2307         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2308
2309
2310         priv->rx_mb_size = dev->if_mtu + ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN;
2311         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2312                                     priv->rx_mb_size,
2313                                     prof->tx_pause, prof->tx_ppp,
2314                                     prof->rx_pause, prof->rx_ppp);
2315         if (err) {
2316                 en_err(priv, "Failed setting port general configurations "
2317                        "for port %d, with error %d\n", priv->port, err);
2318                 goto out;
2319         }
2320
2321         /* Init port */
2322         en_warn(priv, "Initializing port\n");
2323         err = mlx4_INIT_PORT(mdev->dev, priv->port);
2324         if (err) {
2325                 en_err(priv, "Failed Initializing port\n");
2326                 goto out;
2327         }
2328
2329         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2330
2331         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2332                 queue_delayed_work(mdev->workqueue, &priv->service_task, SERVICE_TASK_DELAY);
2333
2334         return 0;
2335
2336 out:
2337         mlx4_en_destroy_netdev(dev);
2338         return err;
2339 }
2340
2341 static int mlx4_en_set_ring_size(struct net_device *dev,
2342     int rx_size, int tx_size)
2343 {
2344         struct mlx4_en_priv *priv = netdev_priv(dev);
2345         struct mlx4_en_dev *mdev = priv->mdev;
2346         int port_up = 0;
2347         int err = 0;
2348
2349         rx_size = roundup_pow_of_two(rx_size);
2350         rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE);
2351         rx_size = min_t(u32, rx_size, MLX4_EN_MAX_RX_SIZE);
2352         tx_size = roundup_pow_of_two(tx_size);
2353         tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE);
2354         tx_size = min_t(u32, tx_size, MLX4_EN_MAX_TX_SIZE);
2355
2356         if (rx_size == (priv->port_up ?
2357             priv->rx_ring[0]->actual_size : priv->rx_ring[0]->size) &&
2358             tx_size == priv->tx_ring[0]->size)
2359                 return 0;
2360         mutex_lock(&mdev->state_lock);
2361         if (priv->port_up) {
2362                 port_up = 1;
2363                 mlx4_en_stop_port(dev);
2364         }
2365         mlx4_en_free_resources(priv);
2366         priv->prof->tx_ring_size = tx_size;
2367         priv->prof->rx_ring_size = rx_size;
2368         err = mlx4_en_alloc_resources(priv);
2369         if (err) {
2370                 en_err(priv, "Failed reallocating port resources\n");
2371                 goto out;
2372         }
2373         if (port_up) {
2374                 err = mlx4_en_start_port(dev);
2375                 if (err)
2376                         en_err(priv, "Failed starting port\n");
2377         }
2378 out:
2379         mutex_unlock(&mdev->state_lock);
2380         return err;
2381 }
2382 static int mlx4_en_set_rx_ring_size(SYSCTL_HANDLER_ARGS)
2383 {
2384         struct mlx4_en_priv *priv;
2385         int size;
2386         int error;
2387
2388         priv = arg1;
2389         size = priv->prof->rx_ring_size;
2390         error = sysctl_handle_int(oidp, &size, 0, req);
2391         if (error || !req->newptr)
2392                 return (error);
2393         error = -mlx4_en_set_ring_size(priv->dev, size,
2394             priv->prof->tx_ring_size);
2395         return (error);
2396 }
2397
2398 static int mlx4_en_set_tx_ring_size(SYSCTL_HANDLER_ARGS)
2399 {
2400         struct mlx4_en_priv *priv;
2401         int size;
2402         int error;
2403
2404         priv = arg1;
2405         size = priv->prof->tx_ring_size;
2406         error = sysctl_handle_int(oidp, &size, 0, req);
2407         if (error || !req->newptr)
2408                 return (error);
2409         error = -mlx4_en_set_ring_size(priv->dev, priv->prof->rx_ring_size,
2410             size);
2411
2412         return (error);
2413 }
2414
2415 static int mlx4_en_get_module_info(struct net_device *dev,
2416                                    struct ethtool_modinfo *modinfo)
2417 {
2418         struct mlx4_en_priv *priv = netdev_priv(dev);
2419         struct mlx4_en_dev *mdev = priv->mdev;
2420         int ret;
2421         u8 data[4];
2422
2423         /* Read first 2 bytes to get Module & REV ID */
2424         ret = mlx4_get_module_info(mdev->dev, priv->port,
2425                                    0/*offset*/, 2/*size*/, data);
2426
2427         if (ret < 2) {
2428                 en_err(priv, "Failed to read eeprom module first two bytes, error: 0x%x\n", -ret);
2429                 return -EIO;
2430         }
2431
2432         switch (data[0] /* identifier */) {
2433         case MLX4_MODULE_ID_QSFP:
2434                 modinfo->type = ETH_MODULE_SFF_8436;
2435                 modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
2436                 break;
2437         case MLX4_MODULE_ID_QSFP_PLUS:
2438                 if (data[1] >= 0x3) { /* revision id */
2439                         modinfo->type = ETH_MODULE_SFF_8636;
2440                         modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
2441                 } else {
2442                         modinfo->type = ETH_MODULE_SFF_8436;
2443                         modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
2444                 }
2445                 break;
2446         case MLX4_MODULE_ID_QSFP28:
2447                 modinfo->type = ETH_MODULE_SFF_8636;
2448                 modinfo->eeprom_len = ETH_MODULE_SFF_8636_LEN;
2449                 break;
2450         case MLX4_MODULE_ID_SFP:
2451                 modinfo->type = ETH_MODULE_SFF_8472;
2452                 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
2453                 break;
2454         default:
2455                 en_err(priv, "mlx4_en_get_module_info :  Not recognized cable type\n");
2456                 return -EINVAL;
2457         }
2458
2459         return 0;
2460 }
2461
2462 static int mlx4_en_get_module_eeprom(struct net_device *dev,
2463                                      struct ethtool_eeprom *ee,
2464                                      u8 *data)
2465 {
2466         struct mlx4_en_priv *priv = netdev_priv(dev);
2467         struct mlx4_en_dev *mdev = priv->mdev;
2468         int offset = ee->offset;
2469         int i = 0, ret;
2470
2471         if (ee->len == 0)
2472                 return -EINVAL;
2473
2474         memset(data, 0, ee->len);
2475
2476         while (i < ee->len) {
2477                 en_dbg(DRV, priv,
2478                        "mlx4_get_module_info i(%d) offset(%d) len(%d)\n",
2479                        i, offset, ee->len - i);
2480
2481                 ret = mlx4_get_module_info(mdev->dev, priv->port,
2482                                            offset, ee->len - i, data + i);
2483
2484                 if (!ret) /* Done reading */
2485                         return 0;
2486
2487                 if (ret < 0) {
2488                         en_err(priv,
2489                                "mlx4_get_module_info i(%d) offset(%d) bytes_to_read(%d) - FAILED (0x%x)\n",
2490                                i, offset, ee->len - i, ret);
2491                         return -1;
2492                 }
2493
2494                 i += ret;
2495                 offset += ret;
2496         }
2497         return 0;
2498 }
2499
2500 static void mlx4_en_print_eeprom(u8 *data, __u32 len)
2501 {
2502         int             i;
2503         int             j = 0;
2504         int             row = 0;
2505         const int       NUM_OF_BYTES = 16;
2506
2507         printf("\nOffset\t\tValues\n");
2508         printf("------\t\t------\n");
2509         while(row < len){
2510                 printf("0x%04x\t\t",row);
2511                 for(i=0; i < NUM_OF_BYTES; i++){
2512                         printf("%02x ", data[j]);
2513                         row++;
2514                         j++;
2515                 }
2516                 printf("\n");
2517         }
2518 }
2519
2520 /* Read cable EEPROM module information by first inspecting the first
2521  * two bytes to get the length and then read the rest of the information.
2522  * The information is printed to dmesg. */
2523 static int mlx4_en_read_eeprom(SYSCTL_HANDLER_ARGS)
2524 {
2525
2526         u8*             data;
2527         int             error;
2528         int             result = 0;
2529         struct          mlx4_en_priv *priv;
2530         struct          net_device *dev;
2531         struct          ethtool_modinfo modinfo;
2532         struct          ethtool_eeprom ee;
2533
2534         error = sysctl_handle_int(oidp, &result, 0, req);
2535         if (error || !req->newptr)
2536                 return (error);
2537
2538         if (result == 1) {
2539                 priv = arg1;
2540                 dev = priv->dev;
2541                 data = kmalloc(PAGE_SIZE, GFP_KERNEL);
2542
2543                 error = mlx4_en_get_module_info(dev, &modinfo);
2544                 if (error) {
2545                         en_err(priv,
2546                                "mlx4_en_get_module_info returned with error - FAILED (0x%x)\n",
2547                                -error);
2548                         goto out;
2549                 }
2550
2551                 ee.len = modinfo.eeprom_len;
2552                 ee.offset = 0;
2553
2554                 error = mlx4_en_get_module_eeprom(dev, &ee, data);
2555                 if (error) {
2556                         en_err(priv,
2557                                "mlx4_en_get_module_eeprom returned with error - FAILED (0x%x)\n",
2558                                -error);
2559                         /* Continue printing partial information in case of an error */
2560                 }
2561
2562                 /* EEPROM information will be printed in dmesg */
2563                 mlx4_en_print_eeprom(data, ee.len);
2564 out:
2565                 kfree(data);
2566         }
2567         /* Return zero to prevent sysctl failure. */
2568         return (0);
2569 }
2570
2571 static int mlx4_en_set_tx_ppp(SYSCTL_HANDLER_ARGS)
2572 {
2573         struct mlx4_en_priv *priv;
2574         int ppp;
2575         int error;
2576
2577         priv = arg1;
2578         ppp = priv->prof->tx_ppp;
2579         error = sysctl_handle_int(oidp, &ppp, 0, req);
2580         if (error || !req->newptr)
2581                 return (error);
2582         if (ppp > 0xff || ppp < 0)
2583                 return (-EINVAL);
2584         priv->prof->tx_ppp = ppp;
2585         error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
2586                                        priv->rx_mb_size + ETHER_CRC_LEN,
2587                                        priv->prof->tx_pause,
2588                                        priv->prof->tx_ppp,
2589                                        priv->prof->rx_pause,
2590                                        priv->prof->rx_ppp);
2591
2592         return (error);
2593 }
2594
2595 static int mlx4_en_set_rx_ppp(SYSCTL_HANDLER_ARGS)
2596 {
2597         struct mlx4_en_priv *priv;
2598         struct mlx4_en_dev *mdev;
2599         int ppp;
2600         int error;
2601         int port_up;
2602
2603         port_up = 0;
2604         priv = arg1;
2605         mdev = priv->mdev;
2606         ppp = priv->prof->rx_ppp;
2607         error = sysctl_handle_int(oidp, &ppp, 0, req);
2608         if (error || !req->newptr)
2609                 return (error);
2610         if (ppp > 0xff || ppp < 0)
2611                 return (-EINVAL);
2612         /* See if we have to change the number of tx queues. */
2613         if (!ppp != !priv->prof->rx_ppp) {
2614                 mutex_lock(&mdev->state_lock);
2615                 if (priv->port_up) {
2616                         port_up = 1;
2617                         mlx4_en_stop_port(priv->dev);
2618                 }
2619                 mlx4_en_free_resources(priv);
2620                 priv->prof->rx_ppp = ppp;
2621                 error = -mlx4_en_alloc_resources(priv);
2622                 if (error)
2623                         en_err(priv, "Failed reallocating port resources\n");
2624                 if (error == 0 && port_up) {
2625                         error = -mlx4_en_start_port(priv->dev);
2626                         if (error)
2627                                 en_err(priv, "Failed starting port\n");
2628                 }
2629                 mutex_unlock(&mdev->state_lock);
2630                 return (error);
2631
2632         }
2633         priv->prof->rx_ppp = ppp;
2634         error = -mlx4_SET_PORT_general(priv->mdev->dev, priv->port,
2635                                        priv->rx_mb_size + ETHER_CRC_LEN,
2636                                        priv->prof->tx_pause,
2637                                        priv->prof->tx_ppp,
2638                                        priv->prof->rx_pause,
2639                                        priv->prof->rx_ppp);
2640
2641         return (error);
2642 }
2643
2644 static void mlx4_en_sysctl_conf(struct mlx4_en_priv *priv)
2645 {
2646         struct net_device *dev;
2647         struct sysctl_ctx_list *ctx;
2648         struct sysctl_oid *node;
2649         struct sysctl_oid_list *node_list;
2650         struct sysctl_oid *coal;
2651         struct sysctl_oid_list *coal_list;
2652         const char *pnameunit;
2653         dev = priv->dev;
2654         ctx = &priv->conf_ctx;
2655         pnameunit = device_get_nameunit(priv->mdev->pdev->dev.bsddev);
2656
2657         sysctl_ctx_init(ctx);
2658         priv->conf_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw),
2659             OID_AUTO, dev->if_xname, CTLFLAG_RD, 0, "mlx4 10gig ethernet");
2660         node = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->conf_sysctl), OID_AUTO,
2661             "conf", CTLFLAG_RD, NULL, "Configuration");
2662         node_list = SYSCTL_CHILDREN(node);
2663
2664         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "msg_enable",
2665             CTLFLAG_RW, &priv->msg_enable, 0,
2666             "Driver message enable bitfield");
2667         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_rings",
2668             CTLFLAG_RD, &priv->rx_ring_num, 0,
2669             "Number of receive rings");
2670         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_rings",
2671             CTLFLAG_RD, &priv->tx_ring_num, 0,
2672             "Number of transmit rings");
2673         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_size",
2674             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2675             mlx4_en_set_rx_ring_size, "I", "Receive ring size");
2676         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_size",
2677             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2678             mlx4_en_set_tx_ring_size, "I", "Transmit ring size");
2679         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "tx_ppp",
2680             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2681             mlx4_en_set_tx_ppp, "I", "TX Per-priority pause");
2682         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "rx_ppp",
2683             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2684             mlx4_en_set_rx_ppp, "I", "RX Per-priority pause");
2685         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "port_num",
2686             CTLFLAG_RD, &priv->port, 0,
2687             "Port Number");
2688         SYSCTL_ADD_STRING(ctx, node_list, OID_AUTO, "device_name",
2689             CTLFLAG_RD, __DECONST(void *, pnameunit), 0,
2690             "PCI device name");
2691         /* Add coalescer configuration. */
2692         coal = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO,
2693             "coalesce", CTLFLAG_RD, NULL, "Interrupt coalesce configuration");
2694         coal_list = SYSCTL_CHILDREN(coal);
2695         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_low",
2696             CTLFLAG_RW, &priv->pkt_rate_low, 0,
2697             "Packets per-second for minimum delay");
2698         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_low",
2699             CTLFLAG_RW, &priv->rx_usecs_low, 0,
2700             "Minimum RX delay in micro-seconds");
2701         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "pkt_rate_high",
2702             CTLFLAG_RW, &priv->pkt_rate_high, 0,
2703             "Packets per-second for maximum delay");
2704         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "rx_usecs_high",
2705             CTLFLAG_RW, &priv->rx_usecs_high, 0,
2706             "Maximum RX delay in micro-seconds");
2707         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "sample_interval",
2708             CTLFLAG_RW, &priv->sample_interval, 0,
2709             "adaptive frequency in units of HZ ticks");
2710         SYSCTL_ADD_UINT(ctx, coal_list, OID_AUTO, "adaptive_rx_coal",
2711             CTLFLAG_RW, &priv->adaptive_rx_coal, 0,
2712             "Enable adaptive rx coalescing");
2713         /* EEPROM support */
2714         SYSCTL_ADD_PROC(ctx, node_list, OID_AUTO, "eeprom_info",
2715             CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE, priv, 0,
2716             mlx4_en_read_eeprom, "I", "EEPROM information");
2717 }
2718
2719 static void mlx4_en_sysctl_stat(struct mlx4_en_priv *priv)
2720 {
2721         struct sysctl_ctx_list *ctx;
2722         struct sysctl_oid_list *node_list;
2723         struct sysctl_oid *ring_node;
2724         struct sysctl_oid_list *ring_list;
2725         struct mlx4_en_tx_ring *tx_ring;
2726         struct mlx4_en_rx_ring *rx_ring;
2727         char namebuf[128];
2728         int i;
2729
2730         ctx = &priv->stat_ctx;
2731         sysctl_ctx_init(ctx);
2732         priv->stat_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(priv->conf_sysctl), OID_AUTO,
2733             "stat", CTLFLAG_RD, NULL, "Statistics");
2734         node_list = SYSCTL_CHILDREN(priv->stat_sysctl);
2735
2736 #ifdef MLX4_EN_PERF_STAT
2737         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_poll", CTLFLAG_RD,
2738             &priv->pstats.tx_poll, "TX Poll calls");
2739         SYSCTL_ADD_QUAD(ctx, node_list, OID_AUTO, "tx_pktsz_avg", CTLFLAG_RD,
2740             &priv->pstats.tx_pktsz_avg, "TX average packet size");
2741         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "inflight_avg", CTLFLAG_RD,
2742             &priv->pstats.inflight_avg, "TX average packets in-flight");
2743         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "tx_coal_avg", CTLFLAG_RD,
2744             &priv->pstats.tx_coal_avg, "TX average coalesced completions");
2745         SYSCTL_ADD_UINT(ctx, node_list, OID_AUTO, "rx_coal_avg", CTLFLAG_RD,
2746             &priv->pstats.rx_coal_avg, "RX average coalesced completions");
2747 #endif
2748
2749         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tso_packets", CTLFLAG_RD,
2750             &priv->port_stats.tso_packets, 0, "TSO packets sent");
2751         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "queue_stopped", CTLFLAG_RD,
2752             &priv->port_stats.queue_stopped, 0, "Queue full");
2753         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "wake_queue", CTLFLAG_RD,
2754             &priv->port_stats.wake_queue, 0, "Queue resumed after full");
2755         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_timeout", CTLFLAG_RD,
2756             &priv->port_stats.tx_timeout, 0, "Transmit timeouts");
2757         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_oversized_packets", CTLFLAG_RD,
2758             &priv->port_stats.oversized_packets, 0, "TX oversized packets, m_defrag failed");
2759         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_alloc_failed", CTLFLAG_RD,
2760             &priv->port_stats.rx_alloc_failed, 0, "RX failed to allocate mbuf");
2761         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_chksum_good", CTLFLAG_RD,
2762             &priv->port_stats.rx_chksum_good, 0, "RX checksum offload success");
2763         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_chksum_none", CTLFLAG_RD,
2764             &priv->port_stats.rx_chksum_none, 0, "RX without checksum offload");
2765         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_chksum_offload",
2766             CTLFLAG_RD, &priv->port_stats.tx_chksum_offload, 0,
2767             "TX checksum offloads");
2768         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "defrag_attempts",
2769             CTLFLAG_RD, &priv->port_stats.defrag_attempts, 0,
2770             "Oversized chains defragged");
2771
2772         /* Could strdup the names and add in a loop.  This is simpler. */
2773         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_bytes", CTLFLAG_RD,
2774             &priv->pkstats.rx_bytes, 0, "RX Bytes");
2775         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_packets", CTLFLAG_RD,
2776             &priv->pkstats.rx_packets, 0, "RX packets");
2777         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_multicast_packets", CTLFLAG_RD,
2778             &priv->pkstats.rx_multicast_packets, 0, "RX Multicast Packets");
2779         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_broadcast_packets", CTLFLAG_RD,
2780             &priv->pkstats.rx_broadcast_packets, 0, "RX Broadcast Packets");
2781         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_errors", CTLFLAG_RD,
2782             &priv->pkstats.rx_errors, 0, "RX Errors");
2783         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_dropped", CTLFLAG_RD,
2784             &priv->pkstats.rx_dropped, 0, "RX Dropped");
2785         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_length_errors", CTLFLAG_RD,
2786             &priv->pkstats.rx_length_errors, 0, "RX Length Errors");
2787         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_over_errors", CTLFLAG_RD,
2788             &priv->pkstats.rx_over_errors, 0, "RX Over Errors");
2789         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_crc_errors", CTLFLAG_RD,
2790             &priv->pkstats.rx_crc_errors, 0, "RX CRC Errors");
2791         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_jabbers", CTLFLAG_RD,
2792             &priv->pkstats.rx_jabbers, 0, "RX Jabbers");
2793
2794         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_in_range_length_error", CTLFLAG_RD,
2795             &priv->pkstats.rx_in_range_length_error, 0, "RX IN_Range Length Error");
2796         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_out_range_length_error",
2797             CTLFLAG_RD, &priv->pkstats.rx_out_range_length_error, 0,
2798             "RX Out Range Length Error");
2799         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_lt_64_bytes_packets", CTLFLAG_RD,
2800             &priv->pkstats.rx_lt_64_bytes_packets, 0, "RX Lt 64 Bytes Packets");
2801         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_127_bytes_packets", CTLFLAG_RD,
2802             &priv->pkstats.rx_127_bytes_packets, 0, "RX 127 bytes Packets");
2803         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_255_bytes_packets", CTLFLAG_RD,
2804             &priv->pkstats.rx_255_bytes_packets, 0, "RX 255 bytes Packets");
2805         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_511_bytes_packets", CTLFLAG_RD,
2806             &priv->pkstats.rx_511_bytes_packets, 0, "RX 511 bytes Packets");
2807         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_1023_bytes_packets", CTLFLAG_RD,
2808             &priv->pkstats.rx_1023_bytes_packets, 0, "RX 1023 bytes Packets");
2809         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_1518_bytes_packets", CTLFLAG_RD,
2810             &priv->pkstats.rx_1518_bytes_packets, 0, "RX 1518 bytes Packets");
2811         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_1522_bytes_packets", CTLFLAG_RD,
2812             &priv->pkstats.rx_1522_bytes_packets, 0, "RX 1522 bytes Packets");
2813         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_1548_bytes_packets", CTLFLAG_RD,
2814             &priv->pkstats.rx_1548_bytes_packets, 0, "RX 1548 bytes Packets");
2815         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "rx_gt_1548_bytes_packets", CTLFLAG_RD,
2816             &priv->pkstats.rx_gt_1548_bytes_packets, 0,
2817             "RX Greater Then 1548 bytes Packets");
2818
2819         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_packets", CTLFLAG_RD,
2820             &priv->pkstats.tx_packets, 0, "TX packets");
2821         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_bytes", CTLFLAG_RD,
2822             &priv->pkstats.tx_bytes, 0, "TX Bytes");
2823         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_multicast_packets", CTLFLAG_RD,
2824             &priv->pkstats.tx_multicast_packets, 0, "TX Multicast Packets");
2825         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_broadcast_packets", CTLFLAG_RD,
2826             &priv->pkstats.tx_broadcast_packets, 0, "TX Broadcast Packets");
2827         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_errors", CTLFLAG_RD,
2828             &priv->pkstats.tx_errors, 0, "TX Errors");
2829         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_dropped", CTLFLAG_RD,
2830             &priv->pkstats.tx_dropped, 0, "TX Dropped");
2831         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_lt_64_bytes_packets", CTLFLAG_RD,
2832             &priv->pkstats.tx_lt_64_bytes_packets, 0, "TX Less Then 64 Bytes Packets");
2833         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_127_bytes_packets", CTLFLAG_RD,
2834             &priv->pkstats.tx_127_bytes_packets, 0, "TX 127 Bytes Packets");
2835         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_255_bytes_packets", CTLFLAG_RD,
2836             &priv->pkstats.tx_255_bytes_packets, 0, "TX 255 Bytes Packets");
2837         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_511_bytes_packets", CTLFLAG_RD,
2838             &priv->pkstats.tx_511_bytes_packets, 0, "TX 511 Bytes Packets");
2839         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_1023_bytes_packets", CTLFLAG_RD,
2840             &priv->pkstats.tx_1023_bytes_packets, 0, "TX 1023 Bytes Packets");
2841         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_1518_bytes_packets", CTLFLAG_RD,
2842             &priv->pkstats.tx_1518_bytes_packets, 0, "TX 1518 Bytes Packets");
2843         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_1522_bytes_packets", CTLFLAG_RD,
2844             &priv->pkstats.tx_1522_bytes_packets, 0, "TX 1522 Bytes Packets");
2845         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_1548_bytes_packets", CTLFLAG_RD,
2846             &priv->pkstats.tx_1548_bytes_packets, 0, "TX 1548 Bytes Packets");
2847         SYSCTL_ADD_U64(ctx, node_list, OID_AUTO, "tx_gt_1548_bytes_packets", CTLFLAG_RD,
2848             &priv->pkstats.tx_gt_1548_bytes_packets, 0,
2849             "TX Greater Then 1548 Bytes Packets");
2850
2851         for (i = 0; i < priv->tx_ring_num; i++) {
2852                 tx_ring = priv->tx_ring[i];
2853                 snprintf(namebuf, sizeof(namebuf), "tx_ring%d", i);
2854                 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
2855                     CTLFLAG_RD, NULL, "TX Ring");
2856                 ring_list = SYSCTL_CHILDREN(ring_node);
2857                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "packets",
2858                     CTLFLAG_RD, &tx_ring->packets, 0, "TX packets");
2859                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "bytes",
2860                     CTLFLAG_RD, &tx_ring->bytes, 0, "TX bytes");
2861                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "tso_packets",
2862                     CTLFLAG_RD, &tx_ring->tso_packets, 0, "TSO packets");
2863                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "defrag_attempts",
2864                     CTLFLAG_RD, &tx_ring->defrag_attempts, 0,
2865                     "Oversized chains defragged");
2866         }
2867
2868         for (i = 0; i < priv->rx_ring_num; i++) {
2869                 rx_ring = priv->rx_ring[i];
2870                 snprintf(namebuf, sizeof(namebuf), "rx_ring%d", i);
2871                 ring_node = SYSCTL_ADD_NODE(ctx, node_list, OID_AUTO, namebuf,
2872                     CTLFLAG_RD, NULL, "RX Ring");
2873                 ring_list = SYSCTL_CHILDREN(ring_node);
2874                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "packets",
2875                     CTLFLAG_RD, &rx_ring->packets, 0, "RX packets");
2876                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "bytes",
2877                     CTLFLAG_RD, &rx_ring->bytes, 0, "RX bytes");
2878                 SYSCTL_ADD_U64(ctx, ring_list, OID_AUTO, "error",
2879                     CTLFLAG_RD, &rx_ring->errors, 0, "RX soft errors");
2880         }
2881 }