drivers/net/mlx5/mlx5.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright 2015 6WIND S.A.
   5  *   Copyright 2015 Mellanox.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of 6WIND S.A. nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <stddef.h>
  35 #include <unistd.h>
  36 #include <string.h>
  37 #include <assert.h>
  38 #include <stdint.h>
  39 #include <stdlib.h>
  40 #include <net/if.h>
  41
  42 /* Verbs header. */
  43 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
  44 #ifdef PEDANTIC
  45 #pragma GCC diagnostic ignored "-pedantic"
  46 #endif
  47 #include <infiniband/verbs.h>
  48 #ifdef PEDANTIC
  49 #pragma GCC diagnostic error "-pedantic"
  50 #endif
  51
  52 /* DPDK headers don't like -pedantic. */
  53 #ifdef PEDANTIC
  54 #pragma GCC diagnostic ignored "-pedantic"
  55 #endif
  56 #include <rte_malloc.h>
  57 #include <rte_ethdev.h>
  58 #include <rte_pci.h>
  59 #include <rte_common.h>
  60 #ifdef PEDANTIC
  61 #pragma GCC diagnostic error "-pedantic"
  62 #endif
  63
  64 #include "mlx5.h"
  65 #include "mlx5_utils.h"
  66 #include "mlx5_rxtx.h"
  67 #include "mlx5_autoconf.h"
  68 #include "mlx5_defs.h"
  69
  70 /**
  71  * Retrieve integer value from environment variable.
  72  *
  73  * @param[in] name
  74  *   Environment variable name.
  75  *
  76  * @return
  77  *   Integer value, 0 if the variable is not set.
  78  */
  79 int
  80 mlx5_getenv_int(const char *name)
  81 {
  82         const char *val = getenv(name);
  83
  84         if (val == NULL)
  85                 return 0;
  86         return atoi(val);
  87 }
  88
  89 /**
  90  * DPDK callback to close the device.
  91  *
  92  * Destroy all queues and objects, free memory.
  93  *
  94  * @param dev
  95  *   Pointer to Ethernet device structure.
  96  */
  97 static void
  98 mlx5_dev_close(struct rte_eth_dev *dev)
  99 {
 100         struct priv *priv = mlx5_get_priv(dev);
 101         unsigned int i;
 102
 103         priv_lock(priv);
 104         DEBUG("%p: closing device \"%s\"",
 105               (void *)dev,
 106               ((priv->ctx != NULL) ? priv->ctx->device->name : ""));
 107         /* In case mlx5_dev_stop() has not been called. */
 108         priv_dev_interrupt_handler_uninstall(priv, dev);
 109         priv_special_flow_disable_all(priv);
 110         priv_mac_addrs_disable(priv);
 111         priv_destroy_hash_rxqs(priv);
 112
 113         /* Remove flow director elements. */
 114         priv_fdir_disable(priv);
 115         priv_fdir_delete_filters_list(priv);
 116
 117         /* Prevent crashes when queues are still in use. */
 118         dev->rx_pkt_burst = removed_rx_burst;
 119         dev->tx_pkt_burst = removed_tx_burst;
 120         if (priv->rxqs != NULL) {
 121                 /* XXX race condition if mlx5_rx_burst() is still running. */
 122                 usleep(1000);
 123                 for (i = 0; (i != priv->rxqs_n); ++i) {
 124                         struct rxq *rxq = (*priv->rxqs)[i];
 125
 126                         if (rxq == NULL)
 127                                 continue;
 128                         (*priv->rxqs)[i] = NULL;
 129                         rxq_cleanup(rxq);
 130                         rte_free(rxq);
 131                 }
 132                 priv->rxqs_n = 0;
 133                 priv->rxqs = NULL;
 134         }
 135         if (priv->txqs != NULL) {
 136                 /* XXX race condition if mlx5_tx_burst() is still running. */
 137                 usleep(1000);
 138                 for (i = 0; (i != priv->txqs_n); ++i) {
 139                         struct txq *txq = (*priv->txqs)[i];
 140                         struct txq_ctrl *txq_ctrl;
 141
 142                         if (txq == NULL)
 143                                 continue;
 144                         txq_ctrl = container_of(txq, struct txq_ctrl, txq);
 145                         (*priv->txqs)[i] = NULL;
 146                         txq_cleanup(txq_ctrl);
 147                         rte_free(txq_ctrl);
 148                 }
 149                 priv->txqs_n = 0;
 150                 priv->txqs = NULL;
 151         }
 152         if (priv->pd != NULL) {
 153                 assert(priv->ctx != NULL);
 154                 claim_zero(ibv_dealloc_pd(priv->pd));
 155                 claim_zero(ibv_close_device(priv->ctx));
 156         } else
 157                 assert(priv->ctx == NULL);
 158         if (priv->rss_conf != NULL) {
 159                 for (i = 0; (i != hash_rxq_init_n); ++i)
 160                         rte_free((*priv->rss_conf)[i]);
 161                 rte_free(priv->rss_conf);
 162         }
 163         if (priv->reta_idx != NULL)
 164                 rte_free(priv->reta_idx);
 165         priv_unlock(priv);
 166         memset(priv, 0, sizeof(*priv));
 167 }
 168
 169 static const struct eth_dev_ops mlx5_dev_ops = {
 170         .dev_configure = mlx5_dev_configure,
 171         .dev_start = mlx5_dev_start,
 172         .dev_stop = mlx5_dev_stop,
 173         .dev_set_link_down = mlx5_set_link_down,
 174         .dev_set_link_up = mlx5_set_link_up,
 175         .dev_close = mlx5_dev_close,
 176         .promiscuous_enable = mlx5_promiscuous_enable,
 177         .promiscuous_disable = mlx5_promiscuous_disable,
 178         .allmulticast_enable = mlx5_allmulticast_enable,
 179         .allmulticast_disable = mlx5_allmulticast_disable,
 180         .link_update = mlx5_link_update,
 181         .stats_get = mlx5_stats_get,
 182         .stats_reset = mlx5_stats_reset,
 183         .dev_infos_get = mlx5_dev_infos_get,
 184         .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
 185         .vlan_filter_set = mlx5_vlan_filter_set,
 186         .rx_queue_setup = mlx5_rx_queue_setup,
 187         .tx_queue_setup = mlx5_tx_queue_setup,
 188         .rx_queue_release = mlx5_rx_queue_release,
 189         .tx_queue_release = mlx5_tx_queue_release,
 190         .flow_ctrl_get = mlx5_dev_get_flow_ctrl,
 191         .flow_ctrl_set = mlx5_dev_set_flow_ctrl,
 192         .mac_addr_remove = mlx5_mac_addr_remove,
 193         .mac_addr_add = mlx5_mac_addr_add,
 194         .mac_addr_set = mlx5_mac_addr_set,
 195         .mtu_set = mlx5_dev_set_mtu,
 196 #ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS
 197         .vlan_strip_queue_set = mlx5_vlan_strip_queue_set,
 198         .vlan_offload_set = mlx5_vlan_offload_set,
 199 #endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */
 200         .reta_update = mlx5_dev_rss_reta_update,
 201         .reta_query = mlx5_dev_rss_reta_query,
 202         .rss_hash_update = mlx5_rss_hash_update,
 203         .rss_hash_conf_get = mlx5_rss_hash_conf_get,
 204 #ifdef MLX5_FDIR_SUPPORT
 205         .filter_ctrl = mlx5_dev_filter_ctrl,
 206 #endif /* MLX5_FDIR_SUPPORT */
 207 };
 208
 209 static struct {
 210         struct rte_pci_addr pci_addr; /* associated PCI address */
 211         uint32_t ports; /* physical ports bitfield. */
 212 } mlx5_dev[32];
 213
 214 /**
 215  * Get device index in mlx5_dev[] from PCI bus address.
 216  *
 217  * @param[in] pci_addr
 218  *   PCI bus address to look for.
 219  *
 220  * @return
 221  *   mlx5_dev[] index on success, -1 on failure.
 222  */
 223 static int
 224 mlx5_dev_idx(struct rte_pci_addr *pci_addr)
 225 {
 226         unsigned int i;
 227         int ret = -1;
 228
 229         assert(pci_addr != NULL);
 230         for (i = 0; (i != RTE_DIM(mlx5_dev)); ++i) {
 231                 if ((mlx5_dev[i].pci_addr.domain == pci_addr->domain) &&
 232                     (mlx5_dev[i].pci_addr.bus == pci_addr->bus) &&
 233                     (mlx5_dev[i].pci_addr.devid == pci_addr->devid) &&
 234                     (mlx5_dev[i].pci_addr.function == pci_addr->function))
 235                         return i;
 236                 if ((mlx5_dev[i].ports == 0) && (ret == -1))
 237                         ret = i;
 238         }
 239         return ret;
 240 }
 241
 242 static struct eth_driver mlx5_driver;
 243
 244 /**
 245  * DPDK callback to register a PCI device.
 246  *
 247  * This function creates an Ethernet device for each port of a given
 248  * PCI device.
 249  *
 250  * @param[in] pci_drv
 251  *   PCI driver structure (mlx5_driver).
 252  * @param[in] pci_dev
 253  *   PCI device information.
 254  *
 255  * @return
 256  *   0 on success, negative errno value on failure.
 257  */
 258 static int
 259 mlx5_pci_devinit(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
 260 {
 261         struct ibv_device **list;
 262         struct ibv_device *ibv_dev;
 263         int err = 0;
 264         struct ibv_context *attr_ctx = NULL;
 265         struct ibv_device_attr device_attr;
 266         unsigned int sriov;
 267         unsigned int mps;
 268         int idx;
 269         int i;
 270
 271         (void)pci_drv;
 272         assert(pci_drv == &mlx5_driver.pci_drv);
 273         /* Get mlx5_dev[] index. */
 274         idx = mlx5_dev_idx(&pci_dev->addr);
 275         if (idx == -1) {
 276                 ERROR("this driver cannot support any more adapters");
 277                 return -ENOMEM;
 278         }
 279         DEBUG("using driver device index %d", idx);
 280
 281         /* Save PCI address. */
 282         mlx5_dev[idx].pci_addr = pci_dev->addr;
 283         list = ibv_get_device_list(&i);
 284         if (list == NULL) {
 285                 assert(errno);
 286                 if (errno == ENOSYS) {
 287                         WARN("cannot list devices, is ib_uverbs loaded?");
 288                         return 0;
 289                 }
 290                 return -errno;
 291         }
 292         assert(i >= 0);
 293         /*
 294          * For each listed device, check related sysfs entry against
 295          * the provided PCI ID.
 296          */
 297         while (i != 0) {
 298                 struct rte_pci_addr pci_addr;
 299
 300                 --i;
 301                 DEBUG("checking device \"%s\"", list[i]->name);
 302                 if (mlx5_ibv_device_to_pci_addr(list[i], &pci_addr))
 303                         continue;
 304                 if ((pci_dev->addr.domain != pci_addr.domain) ||
 305                     (pci_dev->addr.bus != pci_addr.bus) ||
 306                     (pci_dev->addr.devid != pci_addr.devid) ||
 307                     (pci_dev->addr.function != pci_addr.function))
 308                         continue;
 309                 sriov = ((pci_dev->id.device_id ==
 310                        PCI_DEVICE_ID_MELLANOX_CONNECTX4VF) ||
 311                       (pci_dev->id.device_id ==
 312                        PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF));
 313                 /* Multi-packet send is only supported by ConnectX-4 Lx PF. */
 314                 mps = (pci_dev->id.device_id ==
 315                        PCI_DEVICE_ID_MELLANOX_CONNECTX4LX);
 316                 INFO("PCI information matches, using device \"%s\""
 317                      " (SR-IOV: %s, MPS: %s)",
 318                      list[i]->name,
 319                      sriov ? "true" : "false",
 320                      mps ? "true" : "false");
 321                 attr_ctx = ibv_open_device(list[i]);
 322                 err = errno;
 323                 break;
 324         }
 325         if (attr_ctx == NULL) {
 326                 ibv_free_device_list(list);
 327                 switch (err) {
 328                 case 0:
 329                         WARN("cannot access device, is mlx5_ib loaded?");
 330                         return 0;
 331                 case EINVAL:
 332                         WARN("cannot use device, are drivers up to date?");
 333                         return 0;
 334                 }
 335                 assert(err > 0);
 336                 return -err;
 337         }
 338         ibv_dev = list[i];
 339
 340         DEBUG("device opened");
 341         if (ibv_query_device(attr_ctx, &device_attr))
 342                 goto error;
 343         INFO("%u port(s) detected", device_attr.phys_port_cnt);
 344
 345         for (i = 0; i < device_attr.phys_port_cnt; i++) {
 346                 uint32_t port = i + 1; /* ports are indexed from one */
 347                 uint32_t test = (1 << i);
 348                 struct ibv_context *ctx = NULL;
 349                 struct ibv_port_attr port_attr;
 350                 struct ibv_pd *pd = NULL;
 351                 struct priv *priv = NULL;
 352                 struct rte_eth_dev *eth_dev;
 353 #ifdef HAVE_EXP_QUERY_DEVICE
 354                 struct ibv_exp_device_attr exp_device_attr;
 355 #endif /* HAVE_EXP_QUERY_DEVICE */
 356                 struct ether_addr mac;
 357                 uint16_t num_vfs = 0;
 358
 359 #ifdef HAVE_EXP_QUERY_DEVICE
 360                 exp_device_attr.comp_mask =
 361                         IBV_EXP_DEVICE_ATTR_EXP_CAP_FLAGS |
 362                         IBV_EXP_DEVICE_ATTR_RX_HASH |
 363 #ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS
 364                         IBV_EXP_DEVICE_ATTR_VLAN_OFFLOADS |
 365 #endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */
 366 #ifdef HAVE_VERBS_RX_END_PADDING
 367                         IBV_EXP_DEVICE_ATTR_RX_PAD_END_ALIGN |
 368 #endif /* HAVE_VERBS_RX_END_PADDING */
 369                         0;
 370 #endif /* HAVE_EXP_QUERY_DEVICE */
 371
 372                 DEBUG("using port %u (%08" PRIx32 ")", port, test);
 373
 374                 ctx = ibv_open_device(ibv_dev);
 375                 if (ctx == NULL)
 376                         goto port_error;
 377
 378                 /* Check port status. */
 379                 err = ibv_query_port(ctx, port, &port_attr);
 380                 if (err) {
 381                         ERROR("port query failed: %s", strerror(err));
 382                         goto port_error;
 383                 }
 384
 385                 if (port_attr.link_layer != IBV_LINK_LAYER_ETHERNET) {
 386                         ERROR("port %d is not configured in Ethernet mode",
 387                               port);
 388                         goto port_error;
 389                 }
 390
 391                 if (port_attr.state != IBV_PORT_ACTIVE)
 392                         DEBUG("port %d is not active: \"%s\" (%d)",
 393                               port, ibv_port_state_str(port_attr.state),
 394                               port_attr.state);
 395
 396                 /* Allocate protection domain. */
 397                 pd = ibv_alloc_pd(ctx);
 398                 if (pd == NULL) {
 399                         ERROR("PD allocation failure");
 400                         err = ENOMEM;
 401                         goto port_error;
 402                 }
 403
 404                 mlx5_dev[idx].ports |= test;
 405
 406                 /* from rte_ethdev.c */
 407                 priv = rte_zmalloc("ethdev private structure",
 408                                    sizeof(*priv),
 409                                    RTE_CACHE_LINE_SIZE);
 410                 if (priv == NULL) {
 411                         ERROR("priv allocation failure");
 412                         err = ENOMEM;
 413                         goto port_error;
 414                 }
 415
 416                 priv->ctx = ctx;
 417                 priv->device_attr = device_attr;
 418                 priv->port = port;
 419                 priv->pd = pd;
 420                 priv->mtu = ETHER_MTU;
 421 #ifdef HAVE_EXP_QUERY_DEVICE
 422                 if (ibv_exp_query_device(ctx, &exp_device_attr)) {
 423                         ERROR("ibv_exp_query_device() failed");
 424                         goto port_error;
 425                 }
 426
 427                 priv->hw_csum =
 428                         ((exp_device_attr.exp_device_cap_flags &
 429                           IBV_EXP_DEVICE_RX_CSUM_TCP_UDP_PKT) &&
 430                          (exp_device_attr.exp_device_cap_flags &
 431                           IBV_EXP_DEVICE_RX_CSUM_IP_PKT));
 432                 DEBUG("checksum offloading is %ssupported",
 433                       (priv->hw_csum ? "" : "not "));
 434
 435                 priv->hw_csum_l2tun = !!(exp_device_attr.exp_device_cap_flags &
 436                                          IBV_EXP_DEVICE_VXLAN_SUPPORT);
 437                 DEBUG("L2 tunnel checksum offloads are %ssupported",
 438                       (priv->hw_csum_l2tun ? "" : "not "));
 439
 440                 priv->ind_table_max_size = exp_device_attr.rx_hash_caps.max_rwq_indirection_table_size;
 441                 /* Remove this check once DPDK supports larger/variable
 442                  * indirection tables. */
 443                 if (priv->ind_table_max_size > (unsigned int)RSS_INDIRECTION_TABLE_SIZE)
 444                         priv->ind_table_max_size = RSS_INDIRECTION_TABLE_SIZE;
 445                 DEBUG("maximum RX indirection table size is %u",
 446                       priv->ind_table_max_size);
 447 #ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS
 448                 priv->hw_vlan_strip = !!(exp_device_attr.wq_vlan_offloads_cap &
 449                                          IBV_EXP_RECEIVE_WQ_CVLAN_STRIP);
 450 #endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */
 451                 DEBUG("VLAN stripping is %ssupported",
 452                       (priv->hw_vlan_strip ? "" : "not "));
 453
 454 #ifdef HAVE_VERBS_FCS
 455                 priv->hw_fcs_strip = !!(exp_device_attr.exp_device_cap_flags &
 456                                         IBV_EXP_DEVICE_SCATTER_FCS);
 457 #endif /* HAVE_VERBS_FCS */
 458                 DEBUG("FCS stripping configuration is %ssupported",
 459                       (priv->hw_fcs_strip ? "" : "not "));
 460
 461 #ifdef HAVE_VERBS_RX_END_PADDING
 462                 priv->hw_padding = !!exp_device_attr.rx_pad_end_addr_align;
 463 #endif /* HAVE_VERBS_RX_END_PADDING */
 464                 DEBUG("hardware RX end alignment padding is %ssupported",
 465                       (priv->hw_padding ? "" : "not "));
 466
 467 #else /* HAVE_EXP_QUERY_DEVICE */
 468                 priv->ind_table_max_size = RSS_INDIRECTION_TABLE_SIZE;
 469 #endif /* HAVE_EXP_QUERY_DEVICE */
 470
 471                 priv_get_num_vfs(priv, &num_vfs);
 472                 priv->sriov = (num_vfs || sriov);
 473                 priv->mps = mps;
 474                 /* Allocate and register default RSS hash keys. */
 475                 priv->rss_conf = rte_calloc(__func__, hash_rxq_init_n,
 476                                             sizeof((*priv->rss_conf)[0]), 0);
 477                 if (priv->rss_conf == NULL) {
 478                         err = ENOMEM;
 479                         goto port_error;
 480                 }
 481                 err = rss_hash_rss_conf_new_key(priv,
 482                                                 rss_hash_default_key,
 483                                                 rss_hash_default_key_len,
 484                                                 ETH_RSS_PROTO_MASK);
 485                 if (err)
 486                         goto port_error;
 487                 /* Configure the first MAC address by default. */
 488                 if (priv_get_mac(priv, &mac.addr_bytes)) {
 489                         ERROR("cannot get MAC address, is mlx5_en loaded?"
 490                               " (errno: %s)", strerror(errno));
 491                         goto port_error;
 492                 }
 493                 INFO("port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
 494                      priv->port,
 495                      mac.addr_bytes[0], mac.addr_bytes[1],
 496                      mac.addr_bytes[2], mac.addr_bytes[3],
 497                      mac.addr_bytes[4], mac.addr_bytes[5]);
 498                 /* Register MAC address. */
 499                 claim_zero(priv_mac_addr_add(priv, 0,
 500                                              (const uint8_t (*)[ETHER_ADDR_LEN])
 501                                              mac.addr_bytes));
 502                 /* Initialize FD filters list. */
 503                 err = fdir_init_filters_list(priv);
 504                 if (err)
 505                         goto port_error;
 506 #ifndef NDEBUG
 507                 {
 508                         char ifname[IF_NAMESIZE];
 509
 510                         if (priv_get_ifname(priv, &ifname) == 0)
 511                                 DEBUG("port %u ifname is \"%s\"",
 512                                       priv->port, ifname);
 513                         else
 514                                 DEBUG("port %u ifname is unknown", priv->port);
 515                 }
 516 #endif
 517                 /* Get actual MTU if possible. */
 518                 priv_get_mtu(priv, &priv->mtu);
 519                 DEBUG("port %u MTU is %u", priv->port, priv->mtu);
 520
 521                 /* from rte_ethdev.c */
 522                 {
 523                         char name[RTE_ETH_NAME_MAX_LEN];
 524
 525                         snprintf(name, sizeof(name), "%s port %u",
 526                                  ibv_get_device_name(ibv_dev), port);
 527                         eth_dev = rte_eth_dev_allocate(name, RTE_ETH_DEV_PCI);
 528                 }
 529                 if (eth_dev == NULL) {
 530                         ERROR("can not allocate rte ethdev");
 531                         err = ENOMEM;
 532                         goto port_error;
 533                 }
 534
 535                 /* Secondary processes have to use local storage for their
 536                  * private data as well as a copy of eth_dev->data, but this
 537                  * pointer must not be modified before burst functions are
 538                  * actually called. */
 539                 if (mlx5_is_secondary()) {
 540                         struct mlx5_secondary_data *sd =
 541                                 &mlx5_secondary_data[eth_dev->data->port_id];
 542                         sd->primary_priv = eth_dev->data->dev_private;
 543                         if (sd->primary_priv == NULL) {
 544                                 ERROR("no private data for port %u",
 545                                                 eth_dev->data->port_id);
 546                                 err = EINVAL;
 547                                 goto port_error;
 548                         }
 549                         sd->shared_dev_data = eth_dev->data;
 550                         rte_spinlock_init(&sd->lock);
 551                         memcpy(sd->data.name, sd->shared_dev_data->name,
 552                                    sizeof(sd->data.name));
 553                         sd->data.dev_private = priv;
 554                         sd->data.rx_mbuf_alloc_failed = 0;
 555                         sd->data.mtu = ETHER_MTU;
 556                         sd->data.port_id = sd->shared_dev_data->port_id;
 557                         sd->data.mac_addrs = priv->mac;
 558                         eth_dev->tx_pkt_burst = mlx5_tx_burst_secondary_setup;
 559                         eth_dev->rx_pkt_burst = mlx5_rx_burst_secondary_setup;
 560                 } else {
 561                         eth_dev->data->dev_private = priv;
 562                         eth_dev->data->rx_mbuf_alloc_failed = 0;
 563                         eth_dev->data->mtu = ETHER_MTU;
 564                         eth_dev->data->mac_addrs = priv->mac;
 565                 }
 566
 567                 eth_dev->pci_dev = pci_dev;
 568                 rte_eth_copy_pci_info(eth_dev, pci_dev);
 569                 eth_dev->driver = &mlx5_driver;
 570                 priv->dev = eth_dev;
 571                 eth_dev->dev_ops = &mlx5_dev_ops;
 572
 573                 TAILQ_INIT(&eth_dev->link_intr_cbs);
 574
 575                 /* Bring Ethernet device up. */
 576                 DEBUG("forcing Ethernet interface up");
 577                 priv_set_flags(priv, ~IFF_UP, IFF_UP);
 578                 continue;
 579
 580 port_error:
 581                 if (priv) {
 582                         rte_free(priv->rss_conf);
 583                         rte_free(priv);
 584                 }
 585                 if (pd)
 586                         claim_zero(ibv_dealloc_pd(pd));
 587                 if (ctx)
 588                         claim_zero(ibv_close_device(ctx));
 589                 break;
 590         }
 591
 592         /*
 593          * XXX if something went wrong in the loop above, there is a resource
 594          * leak (ctx, pd, priv, dpdk ethdev) but we can do nothing about it as
 595          * long as the dpdk does not provide a way to deallocate a ethdev and a
 596          * way to enumerate the registered ethdevs to free the previous ones.
 597          */
 598
 599         /* no port found, complain */
 600         if (!mlx5_dev[idx].ports) {
 601                 err = ENODEV;
 602                 goto error;
 603         }
 604
 605 error:
 606         if (attr_ctx)
 607                 claim_zero(ibv_close_device(attr_ctx));
 608         if (list)
 609                 ibv_free_device_list(list);
 610         assert(err >= 0);
 611         return -err;
 612 }
 613
 614 static const struct rte_pci_id mlx5_pci_id_map[] = {
 615         {
 616                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
 617                                PCI_DEVICE_ID_MELLANOX_CONNECTX4)
 618         },
 619         {
 620                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
 621                                PCI_DEVICE_ID_MELLANOX_CONNECTX4VF)
 622         },
 623         {
 624                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
 625                                PCI_DEVICE_ID_MELLANOX_CONNECTX4LX)
 626         },
 627         {
 628                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
 629                                PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF)
 630         },
 631         {
 632                 .vendor_id = 0
 633         }
 634 };
 635
 636 static struct eth_driver mlx5_driver = {
 637         .pci_drv = {
 638                 .name = MLX5_DRIVER_NAME,
 639                 .id_table = mlx5_pci_id_map,
 640                 .devinit = mlx5_pci_devinit,
 641                 .drv_flags = RTE_PCI_DRV_INTR_LSC,
 642         },
 643         .dev_private_size = sizeof(struct priv)
 644 };
 645
 646 /**
 647  * Driver initialization routine.
 648  */
 649 static int
 650 rte_mlx5_pmd_init(const char *name, const char *args)
 651 {
 652         (void)name;
 653         (void)args;
 654         /*
 655          * RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use
 656          * huge pages. Calling ibv_fork_init() during init allows
 657          * applications to use fork() safely for purposes other than
 658          * using this PMD, which is not supported in forked processes.
 659          */
 660         setenv("RDMAV_HUGEPAGES_SAFE", "1", 1);
 661         ibv_fork_init();
 662         rte_eal_pci_register(&mlx5_driver.pci_drv);
 663         return 0;
 664 }
 665
 666 static struct rte_driver rte_mlx5_driver = {
 667         .type = PMD_PDEV,
 668         .name = MLX5_DRIVER_NAME,
 669         .init = rte_mlx5_pmd_init,
 670 };
 671
 672 PMD_REGISTER_DRIVER(rte_mlx5_driver)