ceph/src/dpdk/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 <errno.h>
  41 #include <net/if.h>
  42
  43 /* Verbs header. */
  44 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
  45 #ifdef PEDANTIC
  46 #pragma GCC diagnostic ignored "-Wpedantic"
  47 #endif
  48 #include <infiniband/verbs.h>
  49 #ifdef PEDANTIC
  50 #pragma GCC diagnostic error "-Wpedantic"
  51 #endif
  52
  53 /* DPDK headers don't like -pedantic. */
  54 #ifdef PEDANTIC
  55 #pragma GCC diagnostic ignored "-Wpedantic"
  56 #endif
  57 #include <rte_malloc.h>
  58 #include <rte_ethdev.h>
  59 #include <rte_pci.h>
  60 #include <rte_common.h>
  61 #include <rte_kvargs.h>
  62 #ifdef PEDANTIC
  63 #pragma GCC diagnostic error "-Wpedantic"
  64 #endif
  65
  66 #include "mlx5.h"
  67 #include "mlx5_utils.h"
  68 #include "mlx5_rxtx.h"
  69 #include "mlx5_autoconf.h"
  70 #include "mlx5_defs.h"
  71
  72 /* Device parameter to enable RX completion queue compression. */
  73 #define MLX5_RXQ_CQE_COMP_EN "rxq_cqe_comp_en"
  74
  75 /* Device parameter to configure inline send. */
  76 #define MLX5_TXQ_INLINE "txq_inline"
  77
  78 /*
  79  * Device parameter to configure the number of TX queues threshold for
  80  * enabling inline send.
  81  */
  82 #define MLX5_TXQS_MIN_INLINE "txqs_min_inline"
  83
  84 /* Device parameter to enable multi-packet send WQEs. */
  85 #define MLX5_TXQ_MPW_EN "txq_mpw_en"
  86
  87 /**
  88  * Retrieve integer value from environment variable.
  89  *
  90  * @param[in] name
  91  *   Environment variable name.
  92  *
  93  * @return
  94  *   Integer value, 0 if the variable is not set.
  95  */
  96 int
  97 mlx5_getenv_int(const char *name)
  98 {
  99         const char *val = getenv(name);
 100
 101         if (val == NULL)
 102                 return 0;
 103         return atoi(val);
 104 }
 105
 106 /**
 107  * DPDK callback to close the device.
 108  *
 109  * Destroy all queues and objects, free memory.
 110  *
 111  * @param dev
 112  *   Pointer to Ethernet device structure.
 113  */
 114 static void
 115 mlx5_dev_close(struct rte_eth_dev *dev)
 116 {
 117         struct priv *priv = mlx5_get_priv(dev);
 118         unsigned int i;
 119
 120         priv_lock(priv);
 121         DEBUG("%p: closing device \"%s\"",
 122               (void *)dev,
 123               ((priv->ctx != NULL) ? priv->ctx->device->name : ""));
 124         /* In case mlx5_dev_stop() has not been called. */
 125         priv_dev_interrupt_handler_uninstall(priv, dev);
 126         priv_special_flow_disable_all(priv);
 127         priv_mac_addrs_disable(priv);
 128         priv_destroy_hash_rxqs(priv);
 129
 130         /* Remove flow director elements. */
 131         priv_fdir_disable(priv);
 132         priv_fdir_delete_filters_list(priv);
 133
 134         /* Prevent crashes when queues are still in use. */
 135         dev->rx_pkt_burst = removed_rx_burst;
 136         dev->tx_pkt_burst = removed_tx_burst;
 137         if (priv->rxqs != NULL) {
 138                 /* XXX race condition if mlx5_rx_burst() is still running. */
 139                 usleep(1000);
 140                 for (i = 0; (i != priv->rxqs_n); ++i) {
 141                         struct rxq *rxq = (*priv->rxqs)[i];
 142                         struct rxq_ctrl *rxq_ctrl;
 143
 144                         if (rxq == NULL)
 145                                 continue;
 146                         rxq_ctrl = container_of(rxq, struct rxq_ctrl, rxq);
 147                         (*priv->rxqs)[i] = NULL;
 148                         rxq_cleanup(rxq_ctrl);
 149                         rte_free(rxq_ctrl);
 150                 }
 151                 priv->rxqs_n = 0;
 152                 priv->rxqs = NULL;
 153         }
 154         if (priv->txqs != NULL) {
 155                 /* XXX race condition if mlx5_tx_burst() is still running. */
 156                 usleep(1000);
 157                 for (i = 0; (i != priv->txqs_n); ++i) {
 158                         struct txq *txq = (*priv->txqs)[i];
 159                         struct txq_ctrl *txq_ctrl;
 160
 161                         if (txq == NULL)
 162                                 continue;
 163                         txq_ctrl = container_of(txq, struct txq_ctrl, txq);
 164                         (*priv->txqs)[i] = NULL;
 165                         txq_cleanup(txq_ctrl);
 166                         rte_free(txq_ctrl);
 167                 }
 168                 priv->txqs_n = 0;
 169                 priv->txqs = NULL;
 170         }
 171         if (priv->pd != NULL) {
 172                 assert(priv->ctx != NULL);
 173                 claim_zero(ibv_dealloc_pd(priv->pd));
 174                 claim_zero(ibv_close_device(priv->ctx));
 175         } else
 176                 assert(priv->ctx == NULL);
 177         if (priv->rss_conf != NULL) {
 178                 for (i = 0; (i != hash_rxq_init_n); ++i)
 179                         rte_free((*priv->rss_conf)[i]);
 180                 rte_free(priv->rss_conf);
 181         }
 182         if (priv->reta_idx != NULL)
 183                 rte_free(priv->reta_idx);
 184         priv_unlock(priv);
 185         memset(priv, 0, sizeof(*priv));
 186 }
 187
 188 static const struct eth_dev_ops mlx5_dev_ops = {
 189         .dev_configure = mlx5_dev_configure,
 190         .dev_start = mlx5_dev_start,
 191         .dev_stop = mlx5_dev_stop,
 192         .dev_set_link_down = mlx5_set_link_down,
 193         .dev_set_link_up = mlx5_set_link_up,
 194         .dev_close = mlx5_dev_close,
 195         .promiscuous_enable = mlx5_promiscuous_enable,
 196         .promiscuous_disable = mlx5_promiscuous_disable,
 197         .allmulticast_enable = mlx5_allmulticast_enable,
 198         .allmulticast_disable = mlx5_allmulticast_disable,
 199         .link_update = mlx5_link_update,
 200         .stats_get = mlx5_stats_get,
 201         .stats_reset = mlx5_stats_reset,
 202         .dev_infos_get = mlx5_dev_infos_get,
 203         .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
 204         .vlan_filter_set = mlx5_vlan_filter_set,
 205         .rx_queue_setup = mlx5_rx_queue_setup,
 206         .tx_queue_setup = mlx5_tx_queue_setup,
 207         .rx_queue_release = mlx5_rx_queue_release,
 208         .tx_queue_release = mlx5_tx_queue_release,
 209         .flow_ctrl_get = mlx5_dev_get_flow_ctrl,
 210         .flow_ctrl_set = mlx5_dev_set_flow_ctrl,
 211         .mac_addr_remove = mlx5_mac_addr_remove,
 212         .mac_addr_add = mlx5_mac_addr_add,
 213         .mac_addr_set = mlx5_mac_addr_set,
 214         .mtu_set = mlx5_dev_set_mtu,
 215         .vlan_strip_queue_set = mlx5_vlan_strip_queue_set,
 216         .vlan_offload_set = mlx5_vlan_offload_set,
 217         .reta_update = mlx5_dev_rss_reta_update,
 218         .reta_query = mlx5_dev_rss_reta_query,
 219         .rss_hash_update = mlx5_rss_hash_update,
 220         .rss_hash_conf_get = mlx5_rss_hash_conf_get,
 221         .filter_ctrl = mlx5_dev_filter_ctrl,
 222 };
 223
 224 static struct {
 225         struct rte_pci_addr pci_addr; /* associated PCI address */
 226         uint32_t ports; /* physical ports bitfield. */
 227 } mlx5_dev[32];
 228
 229 /**
 230  * Get device index in mlx5_dev[] from PCI bus address.
 231  *
 232  * @param[in] pci_addr
 233  *   PCI bus address to look for.
 234  *
 235  * @return
 236  *   mlx5_dev[] index on success, -1 on failure.
 237  */
 238 static int
 239 mlx5_dev_idx(struct rte_pci_addr *pci_addr)
 240 {
 241         unsigned int i;
 242         int ret = -1;
 243
 244         assert(pci_addr != NULL);
 245         for (i = 0; (i != RTE_DIM(mlx5_dev)); ++i) {
 246                 if ((mlx5_dev[i].pci_addr.domain == pci_addr->domain) &&
 247                     (mlx5_dev[i].pci_addr.bus == pci_addr->bus) &&
 248                     (mlx5_dev[i].pci_addr.devid == pci_addr->devid) &&
 249                     (mlx5_dev[i].pci_addr.function == pci_addr->function))
 250                         return i;
 251                 if ((mlx5_dev[i].ports == 0) && (ret == -1))
 252                         ret = i;
 253         }
 254         return ret;
 255 }
 256
 257 /**
 258  * Verify and store value for device argument.
 259  *
 260  * @param[in] key
 261  *   Key argument to verify.
 262  * @param[in] val
 263  *   Value associated with key.
 264  * @param opaque
 265  *   User data.
 266  *
 267  * @return
 268  *   0 on success, negative errno value on failure.
 269  */
 270 static int
 271 mlx5_args_check(const char *key, const char *val, void *opaque)
 272 {
 273         struct priv *priv = opaque;
 274         unsigned long tmp;
 275
 276         errno = 0;
 277         tmp = strtoul(val, NULL, 0);
 278         if (errno) {
 279                 WARN("%s: \"%s\" is not a valid integer", key, val);
 280                 return errno;
 281         }
 282         if (strcmp(MLX5_RXQ_CQE_COMP_EN, key) == 0) {
 283                 priv->cqe_comp = !!tmp;
 284         } else if (strcmp(MLX5_TXQ_INLINE, key) == 0) {
 285                 priv->txq_inline = tmp;
 286         } else if (strcmp(MLX5_TXQS_MIN_INLINE, key) == 0) {
 287                 priv->txqs_inline = tmp;
 288         } else if (strcmp(MLX5_TXQ_MPW_EN, key) == 0) {
 289                 priv->mps = !!tmp;
 290         } else {
 291                 WARN("%s: unknown parameter", key);
 292                 return -EINVAL;
 293         }
 294         return 0;
 295 }
 296
 297 /**
 298  * Parse device parameters.
 299  *
 300  * @param priv
 301  *   Pointer to private structure.
 302  * @param devargs
 303  *   Device arguments structure.
 304  *
 305  * @return
 306  *   0 on success, errno value on failure.
 307  */
 308 static int
 309 mlx5_args(struct priv *priv, struct rte_devargs *devargs)
 310 {
 311         const char **params = (const char *[]){
 312                 MLX5_RXQ_CQE_COMP_EN,
 313                 MLX5_TXQ_INLINE,
 314                 MLX5_TXQS_MIN_INLINE,
 315                 MLX5_TXQ_MPW_EN,
 316                 NULL,
 317         };
 318         struct rte_kvargs *kvlist;
 319         int ret = 0;
 320         int i;
 321
 322         if (devargs == NULL)
 323                 return 0;
 324         /* Following UGLY cast is done to pass checkpatch. */
 325         kvlist = rte_kvargs_parse(devargs->args, params);
 326         if (kvlist == NULL)
 327                 return 0;
 328         /* Process parameters. */
 329         for (i = 0; (params[i] != NULL); ++i) {
 330                 if (rte_kvargs_count(kvlist, params[i])) {
 331                         ret = rte_kvargs_process(kvlist, params[i],
 332                                                  mlx5_args_check, priv);
 333                         if (ret != 0)
 334                                 return ret;
 335                 }
 336         }
 337         rte_kvargs_free(kvlist);
 338         return 0;
 339 }
 340
 341 static struct eth_driver mlx5_driver;
 342
 343 /**
 344  * DPDK callback to register a PCI device.
 345  *
 346  * This function creates an Ethernet device for each port of a given
 347  * PCI device.
 348  *
 349  * @param[in] pci_drv
 350  *   PCI driver structure (mlx5_driver).
 351  * @param[in] pci_dev
 352  *   PCI device information.
 353  *
 354  * @return
 355  *   0 on success, negative errno value on failure.
 356  */
 357 static int
 358 mlx5_pci_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
 359 {
 360         struct ibv_device **list;
 361         struct ibv_device *ibv_dev;
 362         int err = 0;
 363         struct ibv_context *attr_ctx = NULL;
 364         struct ibv_device_attr device_attr;
 365         unsigned int sriov;
 366         unsigned int mps;
 367         int idx;
 368         int i;
 369
 370         (void)pci_drv;
 371         assert(pci_drv == &mlx5_driver.pci_drv);
 372         /* Get mlx5_dev[] index. */
 373         idx = mlx5_dev_idx(&pci_dev->addr);
 374         if (idx == -1) {
 375                 ERROR("this driver cannot support any more adapters");
 376                 return -ENOMEM;
 377         }
 378         DEBUG("using driver device index %d", idx);
 379
 380         /* Save PCI address. */
 381         mlx5_dev[idx].pci_addr = pci_dev->addr;
 382         list = ibv_get_device_list(&i);
 383         if (list == NULL) {
 384                 assert(errno);
 385                 if (errno == ENOSYS) {
 386                         WARN("cannot list devices, is ib_uverbs loaded?");
 387                         return 0;
 388                 }
 389                 return -errno;
 390         }
 391         assert(i >= 0);
 392         /*
 393          * For each listed device, check related sysfs entry against
 394          * the provided PCI ID.
 395          */
 396         while (i != 0) {
 397                 struct rte_pci_addr pci_addr;
 398
 399                 --i;
 400                 DEBUG("checking device \"%s\"", list[i]->name);
 401                 if (mlx5_ibv_device_to_pci_addr(list[i], &pci_addr))
 402                         continue;
 403                 if ((pci_dev->addr.domain != pci_addr.domain) ||
 404                     (pci_dev->addr.bus != pci_addr.bus) ||
 405                     (pci_dev->addr.devid != pci_addr.devid) ||
 406                     (pci_dev->addr.function != pci_addr.function))
 407                         continue;
 408                 sriov = ((pci_dev->id.device_id ==
 409                        PCI_DEVICE_ID_MELLANOX_CONNECTX4VF) ||
 410                       (pci_dev->id.device_id ==
 411                        PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF));
 412                 /* Multi-packet send is only supported by ConnectX-4 Lx PF. */
 413                 mps = (pci_dev->id.device_id ==
 414                        PCI_DEVICE_ID_MELLANOX_CONNECTX4LX);
 415                 INFO("PCI information matches, using device \"%s\""
 416                      " (SR-IOV: %s, MPS: %s)",
 417                      list[i]->name,
 418                      sriov ? "true" : "false",
 419                      mps ? "true" : "false");
 420                 attr_ctx = ibv_open_device(list[i]);
 421                 err = errno;
 422                 break;
 423         }
 424         if (attr_ctx == NULL) {
 425                 ibv_free_device_list(list);
 426                 switch (err) {
 427                 case 0:
 428                         WARN("cannot access device, is mlx5_ib loaded?");
 429                         return 0;
 430                 case EINVAL:
 431                         WARN("cannot use device, are drivers up to date?");
 432                         return 0;
 433                 }
 434                 assert(err > 0);
 435                 return -err;
 436         }
 437         ibv_dev = list[i];
 438
 439         DEBUG("device opened");
 440         if (ibv_query_device(attr_ctx, &device_attr))
 441                 goto error;
 442         INFO("%u port(s) detected", device_attr.phys_port_cnt);
 443
 444         for (i = 0; i < device_attr.phys_port_cnt; i++) {
 445                 uint32_t port = i + 1; /* ports are indexed from one */
 446                 uint32_t test = (1 << i);
 447                 struct ibv_context *ctx = NULL;
 448                 struct ibv_port_attr port_attr;
 449                 struct ibv_pd *pd = NULL;
 450                 struct priv *priv = NULL;
 451                 struct rte_eth_dev *eth_dev;
 452                 struct ibv_exp_device_attr exp_device_attr;
 453                 struct ether_addr mac;
 454                 uint16_t num_vfs = 0;
 455
 456                 exp_device_attr.comp_mask =
 457                         IBV_EXP_DEVICE_ATTR_EXP_CAP_FLAGS |
 458                         IBV_EXP_DEVICE_ATTR_RX_HASH |
 459                         IBV_EXP_DEVICE_ATTR_VLAN_OFFLOADS |
 460                         IBV_EXP_DEVICE_ATTR_RX_PAD_END_ALIGN |
 461                         0;
 462
 463                 DEBUG("using port %u (%08" PRIx32 ")", port, test);
 464
 465                 ctx = ibv_open_device(ibv_dev);
 466                 if (ctx == NULL)
 467                         goto port_error;
 468
 469                 /* Check port status. */
 470                 err = ibv_query_port(ctx, port, &port_attr);
 471                 if (err) {
 472                         ERROR("port query failed: %s", strerror(err));
 473                         goto port_error;
 474                 }
 475
 476                 if (port_attr.link_layer != IBV_LINK_LAYER_ETHERNET) {
 477                         ERROR("port %d is not configured in Ethernet mode",
 478                               port);
 479                         goto port_error;
 480                 }
 481
 482                 if (port_attr.state != IBV_PORT_ACTIVE)
 483                         DEBUG("port %d is not active: \"%s\" (%d)",
 484                               port, ibv_port_state_str(port_attr.state),
 485                               port_attr.state);
 486
 487                 /* Allocate protection domain. */
 488                 pd = ibv_alloc_pd(ctx);
 489                 if (pd == NULL) {
 490                         ERROR("PD allocation failure");
 491                         err = ENOMEM;
 492                         goto port_error;
 493                 }
 494
 495                 mlx5_dev[idx].ports |= test;
 496
 497                 /* from rte_ethdev.c */
 498                 priv = rte_zmalloc("ethdev private structure",
 499                                    sizeof(*priv),
 500                                    RTE_CACHE_LINE_SIZE);
 501                 if (priv == NULL) {
 502                         ERROR("priv allocation failure");
 503                         err = ENOMEM;
 504                         goto port_error;
 505                 }
 506
 507                 priv->ctx = ctx;
 508                 priv->device_attr = device_attr;
 509                 priv->port = port;
 510                 priv->pd = pd;
 511                 priv->mtu = ETHER_MTU;
 512                 priv->mps = mps; /* Enable MPW by default if supported. */
 513                 priv->cqe_comp = 1; /* Enable compression by default. */
 514                 err = mlx5_args(priv, pci_dev->device.devargs);
 515                 if (err) {
 516                         ERROR("failed to process device arguments: %s",
 517                               strerror(err));
 518                         goto port_error;
 519                 }
 520                 if (ibv_exp_query_device(ctx, &exp_device_attr)) {
 521                         ERROR("ibv_exp_query_device() failed");
 522                         goto port_error;
 523                 }
 524
 525                 priv->hw_csum =
 526                         ((exp_device_attr.exp_device_cap_flags &
 527                           IBV_EXP_DEVICE_RX_CSUM_TCP_UDP_PKT) &&
 528                          (exp_device_attr.exp_device_cap_flags &
 529                           IBV_EXP_DEVICE_RX_CSUM_IP_PKT));
 530                 DEBUG("checksum offloading is %ssupported",
 531                       (priv->hw_csum ? "" : "not "));
 532
 533                 priv->hw_csum_l2tun = !!(exp_device_attr.exp_device_cap_flags &
 534                                          IBV_EXP_DEVICE_VXLAN_SUPPORT);
 535                 DEBUG("L2 tunnel checksum offloads are %ssupported",
 536                       (priv->hw_csum_l2tun ? "" : "not "));
 537
 538                 priv->ind_table_max_size = exp_device_attr.rx_hash_caps.max_rwq_indirection_table_size;
 539                 /* Remove this check once DPDK supports larger/variable
 540                  * indirection tables. */
 541                 if (priv->ind_table_max_size > (unsigned int)RSS_INDIRECTION_TABLE_SIZE)
 542                         priv->ind_table_max_size = RSS_INDIRECTION_TABLE_SIZE;
 543                 DEBUG("maximum RX indirection table size is %u",
 544                       priv->ind_table_max_size);
 545                 priv->hw_vlan_strip = !!(exp_device_attr.wq_vlan_offloads_cap &
 546                                          IBV_EXP_RECEIVE_WQ_CVLAN_STRIP);
 547                 DEBUG("VLAN stripping is %ssupported",
 548                       (priv->hw_vlan_strip ? "" : "not "));
 549
 550                 priv->hw_fcs_strip = !!(exp_device_attr.exp_device_cap_flags &
 551                                         IBV_EXP_DEVICE_SCATTER_FCS);
 552                 DEBUG("FCS stripping configuration is %ssupported",
 553                       (priv->hw_fcs_strip ? "" : "not "));
 554
 555                 priv->hw_padding = !!exp_device_attr.rx_pad_end_addr_align;
 556                 DEBUG("hardware RX end alignment padding is %ssupported",
 557                       (priv->hw_padding ? "" : "not "));
 558
 559                 priv_get_num_vfs(priv, &num_vfs);
 560                 priv->sriov = (num_vfs || sriov);
 561                 if (priv->mps && !mps) {
 562                         ERROR("multi-packet send not supported on this device"
 563                               " (" MLX5_TXQ_MPW_EN ")");
 564                         err = ENOTSUP;
 565                         goto port_error;
 566                 }
 567                 /* Allocate and register default RSS hash keys. */
 568                 priv->rss_conf = rte_calloc(__func__, hash_rxq_init_n,
 569                                             sizeof((*priv->rss_conf)[0]), 0);
 570                 if (priv->rss_conf == NULL) {
 571                         err = ENOMEM;
 572                         goto port_error;
 573                 }
 574                 err = rss_hash_rss_conf_new_key(priv,
 575                                                 rss_hash_default_key,
 576                                                 rss_hash_default_key_len,
 577                                                 ETH_RSS_PROTO_MASK);
 578                 if (err)
 579                         goto port_error;
 580                 /* Configure the first MAC address by default. */
 581                 if (priv_get_mac(priv, &mac.addr_bytes)) {
 582                         ERROR("cannot get MAC address, is mlx5_en loaded?"
 583                               " (errno: %s)", strerror(errno));
 584                         goto port_error;
 585                 }
 586                 INFO("port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
 587                      priv->port,
 588                      mac.addr_bytes[0], mac.addr_bytes[1],
 589                      mac.addr_bytes[2], mac.addr_bytes[3],
 590                      mac.addr_bytes[4], mac.addr_bytes[5]);
 591                 /* Register MAC address. */
 592                 claim_zero(priv_mac_addr_add(priv, 0,
 593                                              (const uint8_t (*)[ETHER_ADDR_LEN])
 594                                              mac.addr_bytes));
 595                 /* Initialize FD filters list. */
 596                 err = fdir_init_filters_list(priv);
 597                 if (err)
 598                         goto port_error;
 599 #ifndef NDEBUG
 600                 {
 601                         char ifname[IF_NAMESIZE];
 602
 603                         if (priv_get_ifname(priv, &ifname) == 0)
 604                                 DEBUG("port %u ifname is \"%s\"",
 605                                       priv->port, ifname);
 606                         else
 607                                 DEBUG("port %u ifname is unknown", priv->port);
 608                 }
 609 #endif
 610                 /* Get actual MTU if possible. */
 611                 priv_get_mtu(priv, &priv->mtu);
 612                 DEBUG("port %u MTU is %u", priv->port, priv->mtu);
 613
 614                 /* from rte_ethdev.c */
 615                 {
 616                         char name[RTE_ETH_NAME_MAX_LEN];
 617
 618                         snprintf(name, sizeof(name), "%s port %u",
 619                                  ibv_get_device_name(ibv_dev), port);
 620                         eth_dev = rte_eth_dev_allocate(name);
 621                 }
 622                 if (eth_dev == NULL) {
 623                         ERROR("can not allocate rte ethdev");
 624                         err = ENOMEM;
 625                         goto port_error;
 626                 }
 627
 628                 /* Secondary processes have to use local storage for their
 629                  * private data as well as a copy of eth_dev->data, but this
 630                  * pointer must not be modified before burst functions are
 631                  * actually called. */
 632                 if (mlx5_is_secondary()) {
 633                         struct mlx5_secondary_data *sd =
 634                                 &mlx5_secondary_data[eth_dev->data->port_id];
 635                         sd->primary_priv = eth_dev->data->dev_private;
 636                         if (sd->primary_priv == NULL) {
 637                                 ERROR("no private data for port %u",
 638                                                 eth_dev->data->port_id);
 639                                 err = EINVAL;
 640                                 goto port_error;
 641                         }
 642                         sd->shared_dev_data = eth_dev->data;
 643                         rte_spinlock_init(&sd->lock);
 644                         memcpy(sd->data.name, sd->shared_dev_data->name,
 645                                    sizeof(sd->data.name));
 646                         sd->data.dev_private = priv;
 647                         sd->data.rx_mbuf_alloc_failed = 0;
 648                         sd->data.mtu = ETHER_MTU;
 649                         sd->data.port_id = sd->shared_dev_data->port_id;
 650                         sd->data.mac_addrs = priv->mac;
 651                         eth_dev->tx_pkt_burst = mlx5_tx_burst_secondary_setup;
 652                         eth_dev->rx_pkt_burst = mlx5_rx_burst_secondary_setup;
 653                 } else {
 654                         eth_dev->data->dev_private = priv;
 655                         eth_dev->data->rx_mbuf_alloc_failed = 0;
 656                         eth_dev->data->mtu = ETHER_MTU;
 657                         eth_dev->data->mac_addrs = priv->mac;
 658                 }
 659
 660                 eth_dev->pci_dev = pci_dev;
 661                 rte_eth_copy_pci_info(eth_dev, pci_dev);
 662                 eth_dev->driver = &mlx5_driver;
 663                 priv->dev = eth_dev;
 664                 eth_dev->dev_ops = &mlx5_dev_ops;
 665
 666                 TAILQ_INIT(&eth_dev->link_intr_cbs);
 667
 668                 /* Bring Ethernet device up. */
 669                 DEBUG("forcing Ethernet interface up");
 670                 priv_set_flags(priv, ~IFF_UP, IFF_UP);
 671                 mlx5_link_update_unlocked(priv->dev, 1);
 672                 continue;
 673
 674 port_error:
 675                 if (priv) {
 676                         rte_free(priv->rss_conf);
 677                         rte_free(priv);
 678                 }
 679                 if (pd)
 680                         claim_zero(ibv_dealloc_pd(pd));
 681                 if (ctx)
 682                         claim_zero(ibv_close_device(ctx));
 683                 break;
 684         }
 685
 686         /*
 687          * XXX if something went wrong in the loop above, there is a resource
 688          * leak (ctx, pd, priv, dpdk ethdev) but we can do nothing about it as
 689          * long as the dpdk does not provide a way to deallocate a ethdev and a
 690          * way to enumerate the registered ethdevs to free the previous ones.
 691          */
 692
 693         /* no port found, complain */
 694         if (!mlx5_dev[idx].ports) {
 695                 err = ENODEV;
 696                 goto error;
 697         }
 698
 699 error:
 700         if (attr_ctx)
 701                 claim_zero(ibv_close_device(attr_ctx));
 702         if (list)
 703                 ibv_free_device_list(list);
 704         assert(err >= 0);
 705         return -err;
 706 }
 707
 708 static const struct rte_pci_id mlx5_pci_id_map[] = {
 709         {
 710                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
 711                                PCI_DEVICE_ID_MELLANOX_CONNECTX4)
 712         },
 713         {
 714                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
 715                                PCI_DEVICE_ID_MELLANOX_CONNECTX4VF)
 716         },
 717         {
 718                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
 719                                PCI_DEVICE_ID_MELLANOX_CONNECTX4LX)
 720         },
 721         {
 722                 RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX,
 723                                PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF)
 724         },
 725         {
 726                 .vendor_id = 0
 727         }
 728 };
 729
 730 static struct eth_driver mlx5_driver = {
 731         .pci_drv = {
 732                 .driver = {
 733                         .name = MLX5_DRIVER_NAME
 734                 },
 735                 .id_table = mlx5_pci_id_map,
 736                 .probe = mlx5_pci_probe,
 737                 .drv_flags = RTE_PCI_DRV_INTR_LSC,
 738         },
 739         .dev_private_size = sizeof(struct priv)
 740 };
 741
 742 /**
 743  * Driver initialization routine.
 744  */
 745 RTE_INIT(rte_mlx5_pmd_init);
 746 static void
 747 rte_mlx5_pmd_init(void)
 748 {
 749         /*
 750          * RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use
 751          * huge pages. Calling ibv_fork_init() during init allows
 752          * applications to use fork() safely for purposes other than
 753          * using this PMD, which is not supported in forked processes.
 754          */
 755         setenv("RDMAV_HUGEPAGES_SAFE", "1", 1);
 756         ibv_fork_init();
 757         rte_eal_pci_register(&mlx5_driver.pci_drv);
 758 }
 759
 760 RTE_PMD_EXPORT_NAME(net_mlx5, __COUNTER__);
 761 RTE_PMD_REGISTER_PCI_TABLE(net_mlx5, mlx5_pci_id_map);