drivers/net/mlx5/mlx5_ethdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2015 6WIND S.A.
   3  * Copyright 2015 Mellanox Technologies, Ltd
   4  */
   5
   6 #define _GNU_SOURCE
   7
   8 #include <stddef.h>
   9 #include <assert.h>
  10 #include <inttypes.h>
  11 #include <unistd.h>
  12 #include <stdint.h>
  13 #include <stdio.h>
  14 #include <string.h>
  15 #include <stdlib.h>
  16 #include <errno.h>
  17 #include <dirent.h>
  18 #include <net/if.h>
  19 #include <sys/ioctl.h>
  20 #include <sys/socket.h>
  21 #include <netinet/in.h>
  22 #include <linux/ethtool.h>
  23 #include <linux/sockios.h>
  24 #include <fcntl.h>
  25 #include <stdalign.h>
  26 #include <sys/un.h>
  27 #include <time.h>
  28
  29 #include <rte_atomic.h>
  30 #include <rte_ethdev_driver.h>
  31 #include <rte_bus_pci.h>
  32 #include <rte_mbuf.h>
  33 #include <rte_common.h>
  34 #include <rte_interrupts.h>
  35 #include <rte_malloc.h>
  36 #include <rte_string_fns.h>
  37 #include <rte_rwlock.h>
  38
  39 #include "mlx5.h"
  40 #include "mlx5_glue.h"
  41 #include "mlx5_rxtx.h"
  42 #include "mlx5_utils.h"
  43
  44 /* Add defines in case the running kernel is not the same as user headers. */
  45 #ifndef ETHTOOL_GLINKSETTINGS
  46 struct ethtool_link_settings {
  47         uint32_t cmd;
  48         uint32_t speed;
  49         uint8_t duplex;
  50         uint8_t port;
  51         uint8_t phy_address;
  52         uint8_t autoneg;
  53         uint8_t mdio_support;
  54         uint8_t eth_to_mdix;
  55         uint8_t eth_tp_mdix_ctrl;
  56         int8_t link_mode_masks_nwords;
  57         uint32_t reserved[8];
  58         uint32_t link_mode_masks[];
  59 };
  60
  61 #define ETHTOOL_GLINKSETTINGS 0x0000004c
  62 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5
  63 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6
  64 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17
  65 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18
  66 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19
  67 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20
  68 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21
  69 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22
  70 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23
  71 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24
  72 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25
  73 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26
  74 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27
  75 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28
  76 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29
  77 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30
  78 #endif
  79 #ifndef HAVE_ETHTOOL_LINK_MODE_25G
  80 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31
  81 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32
  82 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33
  83 #endif
  84 #ifndef HAVE_ETHTOOL_LINK_MODE_50G
  85 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34
  86 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35
  87 #endif
  88 #ifndef HAVE_ETHTOOL_LINK_MODE_100G
  89 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36
  90 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37
  91 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38
  92 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39
  93 #endif
  94
  95 /**
  96  * Get interface name from private structure.
  97  *
  98  * @param[in] dev
  99  *   Pointer to Ethernet device.
 100  * @param[out] ifname
 101  *   Interface name output buffer.
 102  *
 103  * @return
 104  *   0 on success, a negative errno value otherwise and rte_errno is set.
 105  */
 106 int
 107 mlx5_get_ifname(const struct rte_eth_dev *dev, char (*ifname)[IF_NAMESIZE])
 108 {
 109         struct priv *priv = dev->data->dev_private;
 110         DIR *dir;
 111         struct dirent *dent;
 112         unsigned int dev_type = 0;
 113         unsigned int dev_port_prev = ~0u;
 114         char match[IF_NAMESIZE] = "";
 115
 116         {
 117                 MKSTR(path, "%s/device/net", priv->ibdev_path);
 118
 119                 dir = opendir(path);
 120                 if (dir == NULL) {
 121                         rte_errno = errno;
 122                         return -rte_errno;
 123                 }
 124         }
 125         while ((dent = readdir(dir)) != NULL) {
 126                 char *name = dent->d_name;
 127                 FILE *file;
 128                 unsigned int dev_port;
 129                 int r;
 130
 131                 if ((name[0] == '.') &&
 132                     ((name[1] == '\0') ||
 133                      ((name[1] == '.') && (name[2] == '\0'))))
 134                         continue;
 135
 136                 MKSTR(path, "%s/device/net/%s/%s",
 137                       priv->ibdev_path, name,
 138                       (dev_type ? "dev_id" : "dev_port"));
 139
 140                 file = fopen(path, "rb");
 141                 if (file == NULL) {
 142                         if (errno != ENOENT)
 143                                 continue;
 144                         /*
 145                          * Switch to dev_id when dev_port does not exist as
 146                          * is the case with Linux kernel versions < 3.15.
 147                          */
 148 try_dev_id:
 149                         match[0] = '\0';
 150                         if (dev_type)
 151                                 break;
 152                         dev_type = 1;
 153                         dev_port_prev = ~0u;
 154                         rewinddir(dir);
 155                         continue;
 156                 }
 157                 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
 158                 fclose(file);
 159                 if (r != 1)
 160                         continue;
 161                 /*
 162                  * Switch to dev_id when dev_port returns the same value for
 163                  * all ports. May happen when using a MOFED release older than
 164                  * 3.0 with a Linux kernel >= 3.15.
 165                  */
 166                 if (dev_port == dev_port_prev)
 167                         goto try_dev_id;
 168                 dev_port_prev = dev_port;
 169                 if (dev_port == (priv->port - 1u))
 170                         strlcpy(match, name, sizeof(match));
 171         }
 172         closedir(dir);
 173         if (match[0] == '\0') {
 174                 rte_errno = ENOENT;
 175                 return -rte_errno;
 176         }
 177         strncpy(*ifname, match, sizeof(*ifname));
 178         return 0;
 179 }
 180
 181 /**
 182  * Get the interface index from device name.
 183  *
 184  * @param[in] dev
 185  *   Pointer to Ethernet device.
 186  *
 187  * @return
 188  *   Interface index on success, a negative errno value otherwise and
 189  *   rte_errno is set.
 190  */
 191 int
 192 mlx5_ifindex(const struct rte_eth_dev *dev)
 193 {
 194         char ifname[IF_NAMESIZE];
 195         int ret;
 196
 197         ret = mlx5_get_ifname(dev, &ifname);
 198         if (ret)
 199                 return ret;
 200         ret = if_nametoindex(ifname);
 201         if (ret == -1) {
 202                 rte_errno = errno;
 203                 return -rte_errno;
 204         }
 205         return ret;
 206 }
 207
 208 /**
 209  * Perform ifreq ioctl() on associated Ethernet device.
 210  *
 211  * @param[in] dev
 212  *   Pointer to Ethernet device.
 213  * @param req
 214  *   Request number to pass to ioctl().
 215  * @param[out] ifr
 216  *   Interface request structure output buffer.
 217  *
 218  * @return
 219  *   0 on success, a negative errno value otherwise and rte_errno is set.
 220  */
 221 int
 222 mlx5_ifreq(const struct rte_eth_dev *dev, int req, struct ifreq *ifr)
 223 {
 224         int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
 225         int ret = 0;
 226
 227         if (sock == -1) {
 228                 rte_errno = errno;
 229                 return -rte_errno;
 230         }
 231         ret = mlx5_get_ifname(dev, &ifr->ifr_name);
 232         if (ret)
 233                 goto error;
 234         ret = ioctl(sock, req, ifr);
 235         if (ret == -1) {
 236                 rte_errno = errno;
 237                 goto error;
 238         }
 239         close(sock);
 240         return 0;
 241 error:
 242         close(sock);
 243         return -rte_errno;
 244 }
 245
 246 /**
 247  * Get device MTU.
 248  *
 249  * @param dev
 250  *   Pointer to Ethernet device.
 251  * @param[out] mtu
 252  *   MTU value output buffer.
 253  *
 254  * @return
 255  *   0 on success, a negative errno value otherwise and rte_errno is set.
 256  */
 257 int
 258 mlx5_get_mtu(struct rte_eth_dev *dev, uint16_t *mtu)
 259 {
 260         struct ifreq request;
 261         int ret = mlx5_ifreq(dev, SIOCGIFMTU, &request);
 262
 263         if (ret)
 264                 return ret;
 265         *mtu = request.ifr_mtu;
 266         return 0;
 267 }
 268
 269 /**
 270  * Set device MTU.
 271  *
 272  * @param dev
 273  *   Pointer to Ethernet device.
 274  * @param mtu
 275  *   MTU value to set.
 276  *
 277  * @return
 278  *   0 on success, a negative errno value otherwise and rte_errno is set.
 279  */
 280 static int
 281 mlx5_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 282 {
 283         struct ifreq request = { .ifr_mtu = mtu, };
 284
 285         return mlx5_ifreq(dev, SIOCSIFMTU, &request);
 286 }
 287
 288 /**
 289  * Set device flags.
 290  *
 291  * @param dev
 292  *   Pointer to Ethernet device.
 293  * @param keep
 294  *   Bitmask for flags that must remain untouched.
 295  * @param flags
 296  *   Bitmask for flags to modify.
 297  *
 298  * @return
 299  *   0 on success, a negative errno value otherwise and rte_errno is set.
 300  */
 301 int
 302 mlx5_set_flags(struct rte_eth_dev *dev, unsigned int keep, unsigned int flags)
 303 {
 304         struct ifreq request;
 305         int ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &request);
 306
 307         if (ret)
 308                 return ret;
 309         request.ifr_flags &= keep;
 310         request.ifr_flags |= flags & ~keep;
 311         return mlx5_ifreq(dev, SIOCSIFFLAGS, &request);
 312 }
 313
 314 /**
 315  * DPDK callback for Ethernet device configuration.
 316  *
 317  * @param dev
 318  *   Pointer to Ethernet device structure.
 319  *
 320  * @return
 321  *   0 on success, a negative errno value otherwise and rte_errno is set.
 322  */
 323 int
 324 mlx5_dev_configure(struct rte_eth_dev *dev)
 325 {
 326         struct priv *priv = dev->data->dev_private;
 327         unsigned int rxqs_n = dev->data->nb_rx_queues;
 328         unsigned int txqs_n = dev->data->nb_tx_queues;
 329         unsigned int i;
 330         unsigned int j;
 331         unsigned int reta_idx_n;
 332         const uint8_t use_app_rss_key =
 333                 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
 334         int ret = 0;
 335
 336         if (use_app_rss_key &&
 337             (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
 338              rss_hash_default_key_len)) {
 339                 DRV_LOG(ERR, "port %u RSS key len must be %zu Bytes long",
 340                         dev->data->port_id, rss_hash_default_key_len);
 341                 rte_errno = EINVAL;
 342                 return -rte_errno;
 343         }
 344         priv->rss_conf.rss_key =
 345                 rte_realloc(priv->rss_conf.rss_key,
 346                             rss_hash_default_key_len, 0);
 347         if (!priv->rss_conf.rss_key) {
 348                 DRV_LOG(ERR, "port %u cannot allocate RSS hash key memory (%u)",
 349                         dev->data->port_id, rxqs_n);
 350                 rte_errno = ENOMEM;
 351                 return -rte_errno;
 352         }
 353         memcpy(priv->rss_conf.rss_key,
 354                use_app_rss_key ?
 355                dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
 356                rss_hash_default_key,
 357                rss_hash_default_key_len);
 358         priv->rss_conf.rss_key_len = rss_hash_default_key_len;
 359         priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
 360         priv->rxqs = (void *)dev->data->rx_queues;
 361         priv->txqs = (void *)dev->data->tx_queues;
 362         if (txqs_n != priv->txqs_n) {
 363                 DRV_LOG(INFO, "port %u Tx queues number update: %u -> %u",
 364                         dev->data->port_id, priv->txqs_n, txqs_n);
 365                 priv->txqs_n = txqs_n;
 366         }
 367         if (rxqs_n > priv->config.ind_table_max_size) {
 368                 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)",
 369                         dev->data->port_id, rxqs_n);
 370                 rte_errno = EINVAL;
 371                 return -rte_errno;
 372         }
 373         if (rxqs_n == priv->rxqs_n)
 374                 return 0;
 375         DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u",
 376                 dev->data->port_id, priv->rxqs_n, rxqs_n);
 377         priv->rxqs_n = rxqs_n;
 378         /* If the requested number of RX queues is not a power of two, use the
 379          * maximum indirection table size for better balancing.
 380          * The result is always rounded to the next power of two. */
 381         reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ?
 382                                      priv->config.ind_table_max_size :
 383                                      rxqs_n));
 384         ret = mlx5_rss_reta_index_resize(dev, reta_idx_n);
 385         if (ret)
 386                 return ret;
 387         /* When the number of RX queues is not a power of two, the remaining
 388          * table entries are padded with reused WQs and hashes are not spread
 389          * uniformly. */
 390         for (i = 0, j = 0; (i != reta_idx_n); ++i) {
 391                 (*priv->reta_idx)[i] = j;
 392                 if (++j == rxqs_n)
 393                         j = 0;
 394         }
 395         /*
 396          * Once the device is added to the list of memory event callback, its
 397          * global MR cache table cannot be expanded on the fly because of
 398          * deadlock. If it overflows, lookup should be done by searching MR list
 399          * linearly, which is slow.
 400          */
 401         if (mlx5_mr_btree_init(&priv->mr.cache, MLX5_MR_BTREE_CACHE_N * 2,
 402                                dev->device->numa_node)) {
 403                 /* rte_errno is already set. */
 404                 return -rte_errno;
 405         }
 406         rte_rwlock_write_lock(&mlx5_shared_data->mem_event_rwlock);
 407         LIST_INSERT_HEAD(&mlx5_shared_data->mem_event_cb_list,
 408                          priv, mem_event_cb);
 409         rte_rwlock_write_unlock(&mlx5_shared_data->mem_event_rwlock);
 410         return 0;
 411 }
 412
 413 /**
 414  * Sets default tuning parameters.
 415  *
 416  * @param dev
 417  *   Pointer to Ethernet device.
 418  * @param[out] info
 419  *   Info structure output buffer.
 420  */
 421 static void
 422 mlx5_set_default_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 423 {
 424         struct priv *priv = dev->data->dev_private;
 425
 426         /* Minimum CPU utilization. */
 427         info->default_rxportconf.ring_size = 256;
 428         info->default_txportconf.ring_size = 256;
 429         info->default_rxportconf.burst_size = 64;
 430         info->default_txportconf.burst_size = 64;
 431         if (priv->link_speed_capa & ETH_LINK_SPEED_100G) {
 432                 info->default_rxportconf.nb_queues = 16;
 433                 info->default_txportconf.nb_queues = 16;
 434                 if (dev->data->nb_rx_queues > 2 ||
 435                     dev->data->nb_tx_queues > 2) {
 436                         /* Max Throughput. */
 437                         info->default_rxportconf.ring_size = 2048;
 438                         info->default_txportconf.ring_size = 2048;
 439                 }
 440         } else {
 441                 info->default_rxportconf.nb_queues = 8;
 442                 info->default_txportconf.nb_queues = 8;
 443                 if (dev->data->nb_rx_queues > 2 ||
 444                     dev->data->nb_tx_queues > 2) {
 445                         /* Max Throughput. */
 446                         info->default_rxportconf.ring_size = 4096;
 447                         info->default_txportconf.ring_size = 4096;
 448                 }
 449         }
 450 }
 451
 452 /**
 453  * DPDK callback to get information about the device.
 454  *
 455  * @param dev
 456  *   Pointer to Ethernet device structure.
 457  * @param[out] info
 458  *   Info structure output buffer.
 459  */
 460 void
 461 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 462 {
 463         struct priv *priv = dev->data->dev_private;
 464         struct mlx5_dev_config *config = &priv->config;
 465         unsigned int max;
 466         char ifname[IF_NAMESIZE];
 467
 468         /* FIXME: we should ask the device for these values. */
 469         info->min_rx_bufsize = 32;
 470         info->max_rx_pktlen = 65536;
 471         /*
 472          * Since we need one CQ per QP, the limit is the minimum number
 473          * between the two values.
 474          */
 475         max = RTE_MIN(priv->device_attr.orig_attr.max_cq,
 476                       priv->device_attr.orig_attr.max_qp);
 477         /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
 478         if (max >= 65535)
 479                 max = 65535;
 480         info->max_rx_queues = max;
 481         info->max_tx_queues = max;
 482         info->max_mac_addrs = MLX5_MAX_UC_MAC_ADDRESSES;
 483         info->rx_queue_offload_capa = mlx5_get_rx_queue_offloads(dev);
 484         info->rx_offload_capa = (mlx5_get_rx_port_offloads() |
 485                                  info->rx_queue_offload_capa);
 486         info->tx_offload_capa = mlx5_get_tx_port_offloads(dev);
 487         if (mlx5_get_ifname(dev, &ifname) == 0)
 488                 info->if_index = if_nametoindex(ifname);
 489         info->reta_size = priv->reta_idx_n ?
 490                 priv->reta_idx_n : config->ind_table_max_size;
 491         info->hash_key_size = rss_hash_default_key_len;
 492         info->speed_capa = priv->link_speed_capa;
 493         info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK;
 494         mlx5_set_default_params(dev, info);
 495 }
 496
 497 /**
 498  * Get supported packet types.
 499  *
 500  * @param dev
 501  *   Pointer to Ethernet device structure.
 502  *
 503  * @return
 504  *   A pointer to the supported Packet types array.
 505  */
 506 const uint32_t *
 507 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 508 {
 509         static const uint32_t ptypes[] = {
 510                 /* refers to rxq_cq_to_pkt_type() */
 511                 RTE_PTYPE_L2_ETHER,
 512                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 513                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 514                 RTE_PTYPE_L4_NONFRAG,
 515                 RTE_PTYPE_L4_FRAG,
 516                 RTE_PTYPE_L4_TCP,
 517                 RTE_PTYPE_L4_UDP,
 518                 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
 519                 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
 520                 RTE_PTYPE_INNER_L4_NONFRAG,
 521                 RTE_PTYPE_INNER_L4_FRAG,
 522                 RTE_PTYPE_INNER_L4_TCP,
 523                 RTE_PTYPE_INNER_L4_UDP,
 524                 RTE_PTYPE_UNKNOWN
 525         };
 526
 527         if (dev->rx_pkt_burst == mlx5_rx_burst ||
 528             dev->rx_pkt_burst == mlx5_rx_burst_mprq ||
 529             dev->rx_pkt_burst == mlx5_rx_burst_vec)
 530                 return ptypes;
 531         return NULL;
 532 }
 533
 534 /**
 535  * DPDK callback to retrieve physical link information.
 536  *
 537  * @param dev
 538  *   Pointer to Ethernet device structure.
 539  * @param[out] link
 540  *   Storage for current link status.
 541  *
 542  * @return
 543  *   0 on success, a negative errno value otherwise and rte_errno is set.
 544  */
 545 static int
 546 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev,
 547                                struct rte_eth_link *link)
 548 {
 549         struct priv *priv = dev->data->dev_private;
 550         struct ethtool_cmd edata = {
 551                 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
 552         };
 553         struct ifreq ifr;
 554         struct rte_eth_link dev_link;
 555         int link_speed = 0;
 556         int ret;
 557
 558         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
 559         if (ret) {
 560                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
 561                         dev->data->port_id, strerror(rte_errno));
 562                 return ret;
 563         }
 564         memset(&dev_link, 0, sizeof(dev_link));
 565         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 566                                 (ifr.ifr_flags & IFF_RUNNING));
 567         ifr.ifr_data = (void *)&edata;
 568         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 569         if (ret) {
 570                 DRV_LOG(WARNING,
 571                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
 572                         dev->data->port_id, strerror(rte_errno));
 573                 return ret;
 574         }
 575         link_speed = ethtool_cmd_speed(&edata);
 576         if (link_speed == -1)
 577                 dev_link.link_speed = ETH_SPEED_NUM_NONE;
 578         else
 579                 dev_link.link_speed = link_speed;
 580         priv->link_speed_capa = 0;
 581         if (edata.supported & SUPPORTED_Autoneg)
 582                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 583         if (edata.supported & (SUPPORTED_1000baseT_Full |
 584                                SUPPORTED_1000baseKX_Full))
 585                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 586         if (edata.supported & SUPPORTED_10000baseKR_Full)
 587                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 588         if (edata.supported & (SUPPORTED_40000baseKR4_Full |
 589                                SUPPORTED_40000baseCR4_Full |
 590                                SUPPORTED_40000baseSR4_Full |
 591                                SUPPORTED_40000baseLR4_Full))
 592                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 593         dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
 594                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 595         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 596                         ETH_LINK_SPEED_FIXED);
 597         if ((dev_link.link_speed && !dev_link.link_status) ||
 598             (!dev_link.link_speed && dev_link.link_status)) {
 599                 rte_errno = EAGAIN;
 600                 return -rte_errno;
 601         }
 602         *link = dev_link;
 603         return 0;
 604 }
 605
 606 /**
 607  * Retrieve physical link information (unlocked version using new ioctl).
 608  *
 609  * @param dev
 610  *   Pointer to Ethernet device structure.
 611  * @param[out] link
 612  *   Storage for current link status.
 613  *
 614  * @return
 615  *   0 on success, a negative errno value otherwise and rte_errno is set.
 616  */
 617 static int
 618 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev,
 619                              struct rte_eth_link *link)
 620
 621 {
 622         struct priv *priv = dev->data->dev_private;
 623         struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
 624         struct ifreq ifr;
 625         struct rte_eth_link dev_link;
 626         uint64_t sc;
 627         int ret;
 628
 629         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
 630         if (ret) {
 631                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
 632                         dev->data->port_id, strerror(rte_errno));
 633                 return ret;
 634         }
 635         memset(&dev_link, 0, sizeof(dev_link));
 636         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 637                                 (ifr.ifr_flags & IFF_RUNNING));
 638         ifr.ifr_data = (void *)&gcmd;
 639         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 640         if (ret) {
 641                 DRV_LOG(DEBUG,
 642                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS)"
 643                         " failed: %s",
 644                         dev->data->port_id, strerror(rte_errno));
 645                 return ret;
 646         }
 647         gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
 648
 649         alignas(struct ethtool_link_settings)
 650         uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
 651                      sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
 652         struct ethtool_link_settings *ecmd = (void *)data;
 653
 654         *ecmd = gcmd;
 655         ifr.ifr_data = (void *)ecmd;
 656         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 657         if (ret) {
 658                 DRV_LOG(DEBUG,
 659                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS)"
 660                         " failed: %s",
 661                         dev->data->port_id, strerror(rte_errno));
 662                 return ret;
 663         }
 664         dev_link.link_speed = ecmd->speed;
 665         sc = ecmd->link_mode_masks[0] |
 666                 ((uint64_t)ecmd->link_mode_masks[1] << 32);
 667         priv->link_speed_capa = 0;
 668         if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
 669                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 670         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
 671                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
 672                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 673         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
 674                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
 675                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
 676                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 677         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
 678                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
 679                 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
 680         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
 681                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
 682                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
 683                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
 684                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 685         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
 686                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
 687                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
 688                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
 689                 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
 690         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
 691                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
 692                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
 693                 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
 694         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
 695                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
 696                 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
 697         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
 698                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
 699                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
 700                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
 701                 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
 702         dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
 703                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 704         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 705                                   ETH_LINK_SPEED_FIXED);
 706         if ((dev_link.link_speed && !dev_link.link_status) ||
 707             (!dev_link.link_speed && dev_link.link_status)) {
 708                 rte_errno = EAGAIN;
 709                 return -rte_errno;
 710         }
 711         *link = dev_link;
 712         return 0;
 713 }
 714
 715 /**
 716  * DPDK callback to retrieve physical link information.
 717  *
 718  * @param dev
 719  *   Pointer to Ethernet device structure.
 720  * @param wait_to_complete
 721  *   Wait for request completion.
 722  *
 723  * @return
 724  *   0 if link status was not updated, positive if it was, a negative errno
 725  *   value otherwise and rte_errno is set.
 726  */
 727 int
 728 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 729 {
 730         int ret;
 731         struct rte_eth_link dev_link;
 732         time_t start_time = time(NULL);
 733
 734         do {
 735                 ret = mlx5_link_update_unlocked_gs(dev, &dev_link);
 736                 if (ret)
 737                         ret = mlx5_link_update_unlocked_gset(dev, &dev_link);
 738                 if (ret == 0)
 739                         break;
 740                 /* Handle wait to complete situation. */
 741                 if (wait_to_complete && ret == -EAGAIN) {
 742                         if (abs((int)difftime(time(NULL), start_time)) <
 743                             MLX5_LINK_STATUS_TIMEOUT) {
 744                                 usleep(0);
 745                                 continue;
 746                         } else {
 747                                 rte_errno = EBUSY;
 748                                 return -rte_errno;
 749                         }
 750                 } else if (ret < 0) {
 751                         return ret;
 752                 }
 753         } while (wait_to_complete);
 754         ret = !!memcmp(&dev->data->dev_link, &dev_link,
 755                        sizeof(struct rte_eth_link));
 756         dev->data->dev_link = dev_link;
 757         return ret;
 758 }
 759
 760 /**
 761  * DPDK callback to change the MTU.
 762  *
 763  * @param dev
 764  *   Pointer to Ethernet device structure.
 765  * @param in_mtu
 766  *   New MTU.
 767  *
 768  * @return
 769  *   0 on success, a negative errno value otherwise and rte_errno is set.
 770  */
 771 int
 772 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 773 {
 774         struct priv *priv = dev->data->dev_private;
 775         uint16_t kern_mtu = 0;
 776         int ret;
 777
 778         ret = mlx5_get_mtu(dev, &kern_mtu);
 779         if (ret)
 780                 return ret;
 781         /* Set kernel interface MTU first. */
 782         ret = mlx5_set_mtu(dev, mtu);
 783         if (ret)
 784                 return ret;
 785         ret = mlx5_get_mtu(dev, &kern_mtu);
 786         if (ret)
 787                 return ret;
 788         if (kern_mtu == mtu) {
 789                 priv->mtu = mtu;
 790                 DRV_LOG(DEBUG, "port %u adapter MTU set to %u",
 791                         dev->data->port_id, mtu);
 792                 return 0;
 793         }
 794         rte_errno = EAGAIN;
 795         return -rte_errno;
 796 }
 797
 798 /**
 799  * DPDK callback to get flow control status.
 800  *
 801  * @param dev
 802  *   Pointer to Ethernet device structure.
 803  * @param[out] fc_conf
 804  *   Flow control output buffer.
 805  *
 806  * @return
 807  *   0 on success, a negative errno value otherwise and rte_errno is set.
 808  */
 809 int
 810 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 811 {
 812         struct ifreq ifr;
 813         struct ethtool_pauseparam ethpause = {
 814                 .cmd = ETHTOOL_GPAUSEPARAM
 815         };
 816         int ret;
 817
 818         ifr.ifr_data = (void *)&ethpause;
 819         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 820         if (ret) {
 821                 DRV_LOG(WARNING,
 822                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM) failed:"
 823                         " %s",
 824                         dev->data->port_id, strerror(rte_errno));
 825                 return ret;
 826         }
 827         fc_conf->autoneg = ethpause.autoneg;
 828         if (ethpause.rx_pause && ethpause.tx_pause)
 829                 fc_conf->mode = RTE_FC_FULL;
 830         else if (ethpause.rx_pause)
 831                 fc_conf->mode = RTE_FC_RX_PAUSE;
 832         else if (ethpause.tx_pause)
 833                 fc_conf->mode = RTE_FC_TX_PAUSE;
 834         else
 835                 fc_conf->mode = RTE_FC_NONE;
 836         return 0;
 837 }
 838
 839 /**
 840  * DPDK callback to modify flow control parameters.
 841  *
 842  * @param dev
 843  *   Pointer to Ethernet device structure.
 844  * @param[in] fc_conf
 845  *   Flow control parameters.
 846  *
 847  * @return
 848  *   0 on success, a negative errno value otherwise and rte_errno is set.
 849  */
 850 int
 851 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 852 {
 853         struct ifreq ifr;
 854         struct ethtool_pauseparam ethpause = {
 855                 .cmd = ETHTOOL_SPAUSEPARAM
 856         };
 857         int ret;
 858
 859         ifr.ifr_data = (void *)&ethpause;
 860         ethpause.autoneg = fc_conf->autoneg;
 861         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 862             (fc_conf->mode & RTE_FC_RX_PAUSE))
 863                 ethpause.rx_pause = 1;
 864         else
 865                 ethpause.rx_pause = 0;
 866
 867         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 868             (fc_conf->mode & RTE_FC_TX_PAUSE))
 869                 ethpause.tx_pause = 1;
 870         else
 871                 ethpause.tx_pause = 0;
 872         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 873         if (ret) {
 874                 DRV_LOG(WARNING,
 875                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
 876                         " failed: %s",
 877                         dev->data->port_id, strerror(rte_errno));
 878                 return ret;
 879         }
 880         return 0;
 881 }
 882
 883 /**
 884  * Get PCI information from struct ibv_device.
 885  *
 886  * @param device
 887  *   Pointer to Ethernet device structure.
 888  * @param[out] pci_addr
 889  *   PCI bus address output buffer.
 890  *
 891  * @return
 892  *   0 on success, a negative errno value otherwise and rte_errno is set.
 893  */
 894 int
 895 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
 896                             struct rte_pci_addr *pci_addr)
 897 {
 898         FILE *file;
 899         char line[32];
 900         MKSTR(path, "%s/device/uevent", device->ibdev_path);
 901
 902         file = fopen(path, "rb");
 903         if (file == NULL) {
 904                 rte_errno = errno;
 905                 return -rte_errno;
 906         }
 907         while (fgets(line, sizeof(line), file) == line) {
 908                 size_t len = strlen(line);
 909                 int ret;
 910
 911                 /* Truncate long lines. */
 912                 if (len == (sizeof(line) - 1))
 913                         while (line[(len - 1)] != '\n') {
 914                                 ret = fgetc(file);
 915                                 if (ret == EOF)
 916                                         break;
 917                                 line[(len - 1)] = ret;
 918                         }
 919                 /* Extract information. */
 920                 if (sscanf(line,
 921                            "PCI_SLOT_NAME="
 922                            "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
 923                            &pci_addr->domain,
 924                            &pci_addr->bus,
 925                            &pci_addr->devid,
 926                            &pci_addr->function) == 4) {
 927                         ret = 0;
 928                         break;
 929                 }
 930         }
 931         fclose(file);
 932         return 0;
 933 }
 934
 935 /**
 936  * Device status handler.
 937  *
 938  * @param dev
 939  *   Pointer to Ethernet device.
 940  * @param events
 941  *   Pointer to event flags holder.
 942  *
 943  * @return
 944  *   Events bitmap of callback process which can be called immediately.
 945  */
 946 static uint32_t
 947 mlx5_dev_status_handler(struct rte_eth_dev *dev)
 948 {
 949         struct priv *priv = dev->data->dev_private;
 950         struct ibv_async_event event;
 951         uint32_t ret = 0;
 952
 953         if (mlx5_link_update(dev, 0) == -EAGAIN) {
 954                 usleep(0);
 955                 return 0;
 956         }
 957         /* Read all message and acknowledge them. */
 958         for (;;) {
 959                 if (mlx5_glue->get_async_event(priv->ctx, &event))
 960                         break;
 961                 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
 962                         event.event_type == IBV_EVENT_PORT_ERR) &&
 963                         (dev->data->dev_conf.intr_conf.lsc == 1))
 964                         ret |= (1 << RTE_ETH_EVENT_INTR_LSC);
 965                 else if (event.event_type == IBV_EVENT_DEVICE_FATAL &&
 966                         dev->data->dev_conf.intr_conf.rmv == 1)
 967                         ret |= (1 << RTE_ETH_EVENT_INTR_RMV);
 968                 else
 969                         DRV_LOG(DEBUG,
 970                                 "port %u event type %d on not handled",
 971                                 dev->data->port_id, event.event_type);
 972                 mlx5_glue->ack_async_event(&event);
 973         }
 974         return ret;
 975 }
 976
 977 /**
 978  * Handle interrupts from the NIC.
 979  *
 980  * @param[in] intr_handle
 981  *   Interrupt handler.
 982  * @param cb_arg
 983  *   Callback argument.
 984  */
 985 void
 986 mlx5_dev_interrupt_handler(void *cb_arg)
 987 {
 988         struct rte_eth_dev *dev = cb_arg;
 989         uint32_t events;
 990
 991         events = mlx5_dev_status_handler(dev);
 992         if (events & (1 << RTE_ETH_EVENT_INTR_LSC))
 993                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
 994         if (events & (1 << RTE_ETH_EVENT_INTR_RMV))
 995                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL);
 996 }
 997
 998 /**
 999  * Handle interrupts from the socket.
1000  *
1001  * @param cb_arg
1002  *   Callback argument.
1003  */
1004 static void
1005 mlx5_dev_handler_socket(void *cb_arg)
1006 {
1007         struct rte_eth_dev *dev = cb_arg;
1008
1009         mlx5_socket_handle(dev);
1010 }
1011
1012 /**
1013  * Uninstall interrupt handler.
1014  *
1015  * @param dev
1016  *   Pointer to Ethernet device.
1017  */
1018 void
1019 mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev)
1020 {
1021         struct priv *priv = dev->data->dev_private;
1022
1023         if (dev->data->dev_conf.intr_conf.lsc ||
1024             dev->data->dev_conf.intr_conf.rmv)
1025                 rte_intr_callback_unregister(&priv->intr_handle,
1026                                              mlx5_dev_interrupt_handler, dev);
1027         if (priv->primary_socket)
1028                 rte_intr_callback_unregister(&priv->intr_handle_socket,
1029                                              mlx5_dev_handler_socket, dev);
1030         priv->intr_handle.fd = 0;
1031         priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1032         priv->intr_handle_socket.fd = 0;
1033         priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN;
1034 }
1035
1036 /**
1037  * Install interrupt handler.
1038  *
1039  * @param dev
1040  *   Pointer to Ethernet device.
1041  */
1042 void
1043 mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev)
1044 {
1045         struct priv *priv = dev->data->dev_private;
1046         int ret;
1047         int flags;
1048
1049         assert(priv->ctx->async_fd > 0);
1050         flags = fcntl(priv->ctx->async_fd, F_GETFL);
1051         ret = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1052         if (ret) {
1053                 DRV_LOG(INFO,
1054                         "port %u failed to change file descriptor async event"
1055                         " queue",
1056                         dev->data->port_id);
1057                 dev->data->dev_conf.intr_conf.lsc = 0;
1058                 dev->data->dev_conf.intr_conf.rmv = 0;
1059         }
1060         if (dev->data->dev_conf.intr_conf.lsc ||
1061             dev->data->dev_conf.intr_conf.rmv) {
1062                 priv->intr_handle.fd = priv->ctx->async_fd;
1063                 priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
1064                 rte_intr_callback_register(&priv->intr_handle,
1065                                            mlx5_dev_interrupt_handler, dev);
1066         }
1067         ret = mlx5_socket_init(dev);
1068         if (ret)
1069                 DRV_LOG(ERR, "port %u cannot initialise socket: %s",
1070                         dev->data->port_id, strerror(rte_errno));
1071         else if (priv->primary_socket) {
1072                 priv->intr_handle_socket.fd = priv->primary_socket;
1073                 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT;
1074                 rte_intr_callback_register(&priv->intr_handle_socket,
1075                                            mlx5_dev_handler_socket, dev);
1076         }
1077 }
1078
1079 /**
1080  * DPDK callback to bring the link DOWN.
1081  *
1082  * @param dev
1083  *   Pointer to Ethernet device structure.
1084  *
1085  * @return
1086  *   0 on success, a negative errno value otherwise and rte_errno is set.
1087  */
1088 int
1089 mlx5_set_link_down(struct rte_eth_dev *dev)
1090 {
1091         return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP);
1092 }
1093
1094 /**
1095  * DPDK callback to bring the link UP.
1096  *
1097  * @param dev
1098  *   Pointer to Ethernet device structure.
1099  *
1100  * @return
1101  *   0 on success, a negative errno value otherwise and rte_errno is set.
1102  */
1103 int
1104 mlx5_set_link_up(struct rte_eth_dev *dev)
1105 {
1106         return mlx5_set_flags(dev, ~IFF_UP, IFF_UP);
1107 }
1108
1109 /**
1110  * Configure the TX function to use.
1111  *
1112  * @param dev
1113  *   Pointer to private data structure.
1114  *
1115  * @return
1116  *   Pointer to selected Tx burst function.
1117  */
1118 eth_tx_burst_t
1119 mlx5_select_tx_function(struct rte_eth_dev *dev)
1120 {
1121         struct priv *priv = dev->data->dev_private;
1122         eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst;
1123         struct mlx5_dev_config *config = &priv->config;
1124         uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
1125         int tso = !!(tx_offloads & (DEV_TX_OFFLOAD_TCP_TSO |
1126                                     DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
1127                                     DEV_TX_OFFLOAD_GRE_TNL_TSO |
1128                                     DEV_TX_OFFLOAD_IP_TNL_TSO |
1129                                     DEV_TX_OFFLOAD_UDP_TNL_TSO));
1130         int swp = !!(tx_offloads & (DEV_TX_OFFLOAD_IP_TNL_TSO |
1131                                     DEV_TX_OFFLOAD_UDP_TNL_TSO |
1132                                     DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM));
1133         int vlan_insert = !!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT);
1134
1135         assert(priv != NULL);
1136         /* Select appropriate TX function. */
1137         if (vlan_insert || tso || swp)
1138                 return tx_pkt_burst;
1139         if (config->mps == MLX5_MPW_ENHANCED) {
1140                 if (mlx5_check_vec_tx_support(dev) > 0) {
1141                         if (mlx5_check_raw_vec_tx_support(dev) > 0)
1142                                 tx_pkt_burst = mlx5_tx_burst_raw_vec;
1143                         else
1144                                 tx_pkt_burst = mlx5_tx_burst_vec;
1145                         DRV_LOG(DEBUG,
1146                                 "port %u selected enhanced MPW Tx vectorized"
1147                                 " function",
1148                                 dev->data->port_id);
1149                 } else {
1150                         tx_pkt_burst = mlx5_tx_burst_empw;
1151                         DRV_LOG(DEBUG,
1152                                 "port %u selected enhanced MPW Tx function",
1153                                 dev->data->port_id);
1154                 }
1155         } else if (config->mps && (config->txq_inline > 0)) {
1156                 tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1157                 DRV_LOG(DEBUG, "port %u selected MPW inline Tx function",
1158                         dev->data->port_id);
1159         } else if (config->mps) {
1160                 tx_pkt_burst = mlx5_tx_burst_mpw;
1161                 DRV_LOG(DEBUG, "port %u selected MPW Tx function",
1162                         dev->data->port_id);
1163         }
1164         return tx_pkt_burst;
1165 }
1166
1167 /**
1168  * Configure the RX function to use.
1169  *
1170  * @param dev
1171  *   Pointer to private data structure.
1172  *
1173  * @return
1174  *   Pointer to selected Rx burst function.
1175  */
1176 eth_rx_burst_t
1177 mlx5_select_rx_function(struct rte_eth_dev *dev)
1178 {
1179         eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
1180
1181         assert(dev != NULL);
1182         if (mlx5_check_vec_rx_support(dev) > 0) {
1183                 rx_pkt_burst = mlx5_rx_burst_vec;
1184                 DRV_LOG(DEBUG, "port %u selected Rx vectorized function",
1185                         dev->data->port_id);
1186         } else if (mlx5_mprq_enabled(dev)) {
1187                 rx_pkt_burst = mlx5_rx_burst_mprq;
1188         }
1189         return rx_pkt_burst;
1190 }
1191
1192 /**
1193  * Check if mlx5 device was removed.
1194  *
1195  * @param dev
1196  *   Pointer to Ethernet device structure.
1197  *
1198  * @return
1199  *   1 when device is removed, otherwise 0.
1200  */
1201 int
1202 mlx5_is_removed(struct rte_eth_dev *dev)
1203 {
1204         struct ibv_device_attr device_attr;
1205         struct priv *priv = dev->data->dev_private;
1206
1207         if (mlx5_glue->query_device(priv->ctx, &device_attr) == EIO)
1208                 return 1;
1209         return 0;
1210 }