drivers/net/mlx5/mlx5_ethdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2015 6WIND S.A.
   3  * Copyright 2015 Mellanox.
   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 <sys/utsname.h>
  22 #include <netinet/in.h>
  23 #include <linux/ethtool.h>
  24 #include <linux/sockios.h>
  25 #include <linux/version.h>
  26 #include <fcntl.h>
  27 #include <stdalign.h>
  28 #include <sys/un.h>
  29
  30 #include <rte_atomic.h>
  31 #include <rte_ethdev_driver.h>
  32 #include <rte_bus_pci.h>
  33 #include <rte_mbuf.h>
  34 #include <rte_common.h>
  35 #include <rte_interrupts.h>
  36 #include <rte_alarm.h>
  37 #include <rte_malloc.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] priv
  99  *   Pointer to private structure.
 100  * @param[out] ifname
 101  *   Interface name output buffer.
 102  *
 103  * @return
 104  *   0 on success, -1 on failure and errno is set.
 105  */
 106 int
 107 priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE])
 108 {
 109         DIR *dir;
 110         struct dirent *dent;
 111         unsigned int dev_type = 0;
 112         unsigned int dev_port_prev = ~0u;
 113         char match[IF_NAMESIZE] = "";
 114
 115         {
 116                 MKSTR(path, "%s/device/net", priv->ibdev_path);
 117
 118                 dir = opendir(path);
 119                 if (dir == NULL)
 120                         return -1;
 121         }
 122         while ((dent = readdir(dir)) != NULL) {
 123                 char *name = dent->d_name;
 124                 FILE *file;
 125                 unsigned int dev_port;
 126                 int r;
 127
 128                 if ((name[0] == '.') &&
 129                     ((name[1] == '\0') ||
 130                      ((name[1] == '.') && (name[2] == '\0'))))
 131                         continue;
 132
 133                 MKSTR(path, "%s/device/net/%s/%s",
 134                       priv->ibdev_path, name,
 135                       (dev_type ? "dev_id" : "dev_port"));
 136
 137                 file = fopen(path, "rb");
 138                 if (file == NULL) {
 139                         if (errno != ENOENT)
 140                                 continue;
 141                         /*
 142                          * Switch to dev_id when dev_port does not exist as
 143                          * is the case with Linux kernel versions < 3.15.
 144                          */
 145 try_dev_id:
 146                         match[0] = '\0';
 147                         if (dev_type)
 148                                 break;
 149                         dev_type = 1;
 150                         dev_port_prev = ~0u;
 151                         rewinddir(dir);
 152                         continue;
 153                 }
 154                 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
 155                 fclose(file);
 156                 if (r != 1)
 157                         continue;
 158                 /*
 159                  * Switch to dev_id when dev_port returns the same value for
 160                  * all ports. May happen when using a MOFED release older than
 161                  * 3.0 with a Linux kernel >= 3.15.
 162                  */
 163                 if (dev_port == dev_port_prev)
 164                         goto try_dev_id;
 165                 dev_port_prev = dev_port;
 166                 if (dev_port == (priv->port - 1u))
 167                         snprintf(match, sizeof(match), "%s", name);
 168         }
 169         closedir(dir);
 170         if (match[0] == '\0')
 171                 return -1;
 172         strncpy(*ifname, match, sizeof(*ifname));
 173         return 0;
 174 }
 175
 176 /**
 177  * Perform ifreq ioctl() on associated Ethernet device.
 178  *
 179  * @param[in] priv
 180  *   Pointer to private structure.
 181  * @param req
 182  *   Request number to pass to ioctl().
 183  * @param[out] ifr
 184  *   Interface request structure output buffer.
 185  *
 186  * @return
 187  *   0 on success, -1 on failure and errno is set.
 188  */
 189 int
 190 priv_ifreq(const struct priv *priv, int req, struct ifreq *ifr)
 191 {
 192         int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
 193         int ret = -1;
 194
 195         if (sock == -1)
 196                 return ret;
 197         if (priv_get_ifname(priv, &ifr->ifr_name) == 0)
 198                 ret = ioctl(sock, req, ifr);
 199         close(sock);
 200         return ret;
 201 }
 202
 203 /**
 204  * Get device MTU.
 205  *
 206  * @param priv
 207  *   Pointer to private structure.
 208  * @param[out] mtu
 209  *   MTU value output buffer.
 210  *
 211  * @return
 212  *   0 on success, -1 on failure and errno is set.
 213  */
 214 int
 215 priv_get_mtu(struct priv *priv, uint16_t *mtu)
 216 {
 217         struct ifreq request;
 218         int ret = priv_ifreq(priv, SIOCGIFMTU, &request);
 219
 220         if (ret)
 221                 return ret;
 222         *mtu = request.ifr_mtu;
 223         return 0;
 224 }
 225
 226 /**
 227  * Set device MTU.
 228  *
 229  * @param priv
 230  *   Pointer to private structure.
 231  * @param mtu
 232  *   MTU value to set.
 233  *
 234  * @return
 235  *   0 on success, -1 on failure and errno is set.
 236  */
 237 static int
 238 priv_set_mtu(struct priv *priv, uint16_t mtu)
 239 {
 240         struct ifreq request = { .ifr_mtu = mtu, };
 241
 242         return priv_ifreq(priv, SIOCSIFMTU, &request);
 243 }
 244
 245 /**
 246  * Set device flags.
 247  *
 248  * @param priv
 249  *   Pointer to private structure.
 250  * @param keep
 251  *   Bitmask for flags that must remain untouched.
 252  * @param flags
 253  *   Bitmask for flags to modify.
 254  *
 255  * @return
 256  *   0 on success, -1 on failure and errno is set.
 257  */
 258 int
 259 priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags)
 260 {
 261         struct ifreq request;
 262         int ret = priv_ifreq(priv, SIOCGIFFLAGS, &request);
 263
 264         if (ret)
 265                 return ret;
 266         request.ifr_flags &= keep;
 267         request.ifr_flags |= flags & ~keep;
 268         return priv_ifreq(priv, SIOCSIFFLAGS, &request);
 269 }
 270
 271 /**
 272  * DPDK callback for Ethernet device configuration.
 273  *
 274  * @param dev
 275  *   Pointer to Ethernet device structure.
 276  *
 277  * @return
 278  *   0 on success, negative errno value on failure.
 279  */
 280 int
 281 mlx5_dev_configure(struct rte_eth_dev *dev)
 282 {
 283         struct priv *priv = dev->data->dev_private;
 284         unsigned int rxqs_n = dev->data->nb_rx_queues;
 285         unsigned int txqs_n = dev->data->nb_tx_queues;
 286         unsigned int i;
 287         unsigned int j;
 288         unsigned int reta_idx_n;
 289         const uint8_t use_app_rss_key =
 290                 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
 291         uint64_t supp_tx_offloads = mlx5_priv_get_tx_port_offloads(priv);
 292         uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
 293         uint64_t supp_rx_offloads =
 294                 (mlx5_priv_get_rx_port_offloads(priv) |
 295                  mlx5_priv_get_rx_queue_offloads(priv));
 296         uint64_t rx_offloads = dev->data->dev_conf.rxmode.offloads;
 297
 298         if ((tx_offloads & supp_tx_offloads) != tx_offloads) {
 299                 ERROR("Some Tx offloads are not supported "
 300                       "requested 0x%" PRIx64 " supported 0x%" PRIx64,
 301                       tx_offloads, supp_tx_offloads);
 302                 return ENOTSUP;
 303         }
 304         if ((rx_offloads & supp_rx_offloads) != rx_offloads) {
 305                 ERROR("Some Rx offloads are not supported "
 306                       "requested 0x%" PRIx64 " supported 0x%" PRIx64,
 307                       rx_offloads, supp_rx_offloads);
 308                 return ENOTSUP;
 309         }
 310         if (use_app_rss_key &&
 311             (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
 312              rss_hash_default_key_len)) {
 313                 /* MLX5 RSS only support 40bytes key. */
 314                 return EINVAL;
 315         }
 316         priv->rss_conf.rss_key =
 317                 rte_realloc(priv->rss_conf.rss_key,
 318                             rss_hash_default_key_len, 0);
 319         if (!priv->rss_conf.rss_key) {
 320                 ERROR("cannot allocate RSS hash key memory (%u)", rxqs_n);
 321                 return ENOMEM;
 322         }
 323         memcpy(priv->rss_conf.rss_key,
 324                use_app_rss_key ?
 325                dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
 326                rss_hash_default_key,
 327                rss_hash_default_key_len);
 328         priv->rss_conf.rss_key_len = rss_hash_default_key_len;
 329         priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
 330         priv->rxqs = (void *)dev->data->rx_queues;
 331         priv->txqs = (void *)dev->data->tx_queues;
 332         if (txqs_n != priv->txqs_n) {
 333                 INFO("%p: TX queues number update: %u -> %u",
 334                      (void *)dev, priv->txqs_n, txqs_n);
 335                 priv->txqs_n = txqs_n;
 336         }
 337         if (rxqs_n > priv->config.ind_table_max_size) {
 338                 ERROR("cannot handle this many RX queues (%u)", rxqs_n);
 339                 return EINVAL;
 340         }
 341         if (rxqs_n == priv->rxqs_n)
 342                 return 0;
 343         INFO("%p: RX queues number update: %u -> %u",
 344              (void *)dev, priv->rxqs_n, rxqs_n);
 345         priv->rxqs_n = rxqs_n;
 346         /* If the requested number of RX queues is not a power of two, use the
 347          * maximum indirection table size for better balancing.
 348          * The result is always rounded to the next power of two. */
 349         reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ?
 350                                      priv->config.ind_table_max_size :
 351                                      rxqs_n));
 352         if (priv_rss_reta_index_resize(priv, reta_idx_n))
 353                 return ENOMEM;
 354         /* When the number of RX queues is not a power of two, the remaining
 355          * table entries are padded with reused WQs and hashes are not spread
 356          * uniformly. */
 357         for (i = 0, j = 0; (i != reta_idx_n); ++i) {
 358                 (*priv->reta_idx)[i] = j;
 359                 if (++j == rxqs_n)
 360                         j = 0;
 361         }
 362         return 0;
 363
 364 }
 365
 366 /**
 367  * DPDK callback to get information about the device.
 368  *
 369  * @param dev
 370  *   Pointer to Ethernet device structure.
 371  * @param[out] info
 372  *   Info structure output buffer.
 373  */
 374 void
 375 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 376 {
 377         struct priv *priv = dev->data->dev_private;
 378         struct mlx5_dev_config *config = &priv->config;
 379         unsigned int max;
 380         char ifname[IF_NAMESIZE];
 381
 382         info->pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 383         /* FIXME: we should ask the device for these values. */
 384         info->min_rx_bufsize = 32;
 385         info->max_rx_pktlen = 65536;
 386         /*
 387          * Since we need one CQ per QP, the limit is the minimum number
 388          * between the two values.
 389          */
 390         max = RTE_MIN(priv->device_attr.orig_attr.max_cq,
 391                       priv->device_attr.orig_attr.max_qp);
 392         /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
 393         if (max >= 65535)
 394                 max = 65535;
 395         info->max_rx_queues = max;
 396         info->max_tx_queues = max;
 397         info->max_mac_addrs = RTE_DIM(priv->mac);
 398         info->rx_queue_offload_capa =
 399                 mlx5_priv_get_rx_queue_offloads(priv);
 400         info->rx_offload_capa = (mlx5_priv_get_rx_port_offloads(priv) |
 401                                  info->rx_queue_offload_capa);
 402         info->tx_offload_capa = mlx5_priv_get_tx_port_offloads(priv);
 403         if (priv_get_ifname(priv, &ifname) == 0)
 404                 info->if_index = if_nametoindex(ifname);
 405         info->reta_size = priv->reta_idx_n ?
 406                 priv->reta_idx_n : config->ind_table_max_size;
 407         info->hash_key_size = priv->rss_conf.rss_key_len;
 408         info->speed_capa = priv->link_speed_capa;
 409         info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK;
 410 }
 411
 412 /**
 413  * Get supported packet types.
 414  *
 415  * @param dev
 416  *   Pointer to Ethernet device structure.
 417  *
 418  * @return
 419  *   A pointer to the supported Packet types array.
 420  */
 421 const uint32_t *
 422 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 423 {
 424         static const uint32_t ptypes[] = {
 425                 /* refers to rxq_cq_to_pkt_type() */
 426                 RTE_PTYPE_L2_ETHER,
 427                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 428                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 429                 RTE_PTYPE_L4_NONFRAG,
 430                 RTE_PTYPE_L4_FRAG,
 431                 RTE_PTYPE_L4_TCP,
 432                 RTE_PTYPE_L4_UDP,
 433                 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
 434                 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
 435                 RTE_PTYPE_INNER_L4_NONFRAG,
 436                 RTE_PTYPE_INNER_L4_FRAG,
 437                 RTE_PTYPE_INNER_L4_TCP,
 438                 RTE_PTYPE_INNER_L4_UDP,
 439                 RTE_PTYPE_UNKNOWN
 440         };
 441
 442         if (dev->rx_pkt_burst == mlx5_rx_burst ||
 443             dev->rx_pkt_burst == mlx5_rx_burst_vec)
 444                 return ptypes;
 445         return NULL;
 446 }
 447
 448 /**
 449  * DPDK callback to retrieve physical link information.
 450  *
 451  * @param dev
 452  *   Pointer to Ethernet device structure.
 453  *
 454  * @return
 455  *   0 on success, -1 on error.
 456  */
 457 static int
 458 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev)
 459 {
 460         struct priv *priv = dev->data->dev_private;
 461         struct ethtool_cmd edata = {
 462                 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
 463         };
 464         struct ifreq ifr;
 465         struct rte_eth_link dev_link;
 466         int link_speed = 0;
 467
 468         if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
 469                 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
 470                 return -1;
 471         }
 472         memset(&dev_link, 0, sizeof(dev_link));
 473         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 474                                 (ifr.ifr_flags & IFF_RUNNING));
 475         ifr.ifr_data = (void *)&edata;
 476         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 477                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
 478                      strerror(errno));
 479                 return -1;
 480         }
 481         link_speed = ethtool_cmd_speed(&edata);
 482         if (link_speed == -1)
 483                 dev_link.link_speed = 0;
 484         else
 485                 dev_link.link_speed = link_speed;
 486         priv->link_speed_capa = 0;
 487         if (edata.supported & SUPPORTED_Autoneg)
 488                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 489         if (edata.supported & (SUPPORTED_1000baseT_Full |
 490                                SUPPORTED_1000baseKX_Full))
 491                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 492         if (edata.supported & SUPPORTED_10000baseKR_Full)
 493                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 494         if (edata.supported & (SUPPORTED_40000baseKR4_Full |
 495                                SUPPORTED_40000baseCR4_Full |
 496                                SUPPORTED_40000baseSR4_Full |
 497                                SUPPORTED_40000baseLR4_Full))
 498                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 499         dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
 500                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 501         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 502                         ETH_LINK_SPEED_FIXED);
 503         if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
 504                 /* Link status changed. */
 505                 dev->data->dev_link = dev_link;
 506                 return 0;
 507         }
 508         /* Link status is still the same. */
 509         return -1;
 510 }
 511
 512 /**
 513  * Retrieve physical link information (unlocked version using new ioctl).
 514  *
 515  * @param dev
 516  *   Pointer to Ethernet device structure.
 517  *
 518  * @return
 519  *   0 on success, -1 on error.
 520  */
 521 static int
 522 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev)
 523 {
 524         struct priv *priv = dev->data->dev_private;
 525         struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
 526         struct ifreq ifr;
 527         struct rte_eth_link dev_link;
 528         uint64_t sc;
 529
 530         if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
 531                 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
 532                 return -1;
 533         }
 534         memset(&dev_link, 0, sizeof(dev_link));
 535         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 536                                 (ifr.ifr_flags & IFF_RUNNING));
 537         ifr.ifr_data = (void *)&gcmd;
 538         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 539                 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
 540                       strerror(errno));
 541                 return -1;
 542         }
 543         gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
 544
 545         alignas(struct ethtool_link_settings)
 546         uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
 547                      sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
 548         struct ethtool_link_settings *ecmd = (void *)data;
 549
 550         *ecmd = gcmd;
 551         ifr.ifr_data = (void *)ecmd;
 552         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 553                 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
 554                       strerror(errno));
 555                 return -1;
 556         }
 557         dev_link.link_speed = ecmd->speed;
 558         sc = ecmd->link_mode_masks[0] |
 559                 ((uint64_t)ecmd->link_mode_masks[1] << 32);
 560         priv->link_speed_capa = 0;
 561         if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
 562                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 563         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
 564                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
 565                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 566         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
 567                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
 568                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
 569                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 570         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
 571                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
 572                 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
 573         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
 574                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
 575                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
 576                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
 577                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 578         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
 579                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
 580                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
 581                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
 582                 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
 583         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
 584                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
 585                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
 586                 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
 587         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
 588                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
 589                 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
 590         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
 591                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
 592                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
 593                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
 594                 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
 595         dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
 596                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 597         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 598                                   ETH_LINK_SPEED_FIXED);
 599         if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
 600                 /* Link status changed. */
 601                 dev->data->dev_link = dev_link;
 602                 return 0;
 603         }
 604         /* Link status is still the same. */
 605         return -1;
 606 }
 607
 608 /**
 609  * Enable receiving and transmitting traffic.
 610  *
 611  * @param priv
 612  *   Pointer to private structure.
 613  */
 614 static void
 615 priv_link_start(struct priv *priv)
 616 {
 617         struct rte_eth_dev *dev = priv->dev;
 618         int err;
 619
 620         dev->tx_pkt_burst = priv_select_tx_function(priv, dev);
 621         dev->rx_pkt_burst = priv_select_rx_function(priv, dev);
 622         err = priv_dev_traffic_enable(priv, dev);
 623         if (err)
 624                 ERROR("%p: error occurred while configuring control flows: %s",
 625                       (void *)priv, strerror(err));
 626         err = priv_flow_start(priv, &priv->flows);
 627         if (err)
 628                 ERROR("%p: error occurred while configuring flows: %s",
 629                       (void *)priv, strerror(err));
 630 }
 631
 632 /**
 633  * Disable receiving and transmitting traffic.
 634  *
 635  * @param priv
 636  *   Pointer to private structure.
 637  */
 638 static void
 639 priv_link_stop(struct priv *priv)
 640 {
 641         struct rte_eth_dev *dev = priv->dev;
 642
 643         priv_flow_stop(priv, &priv->flows);
 644         priv_dev_traffic_disable(priv, dev);
 645         dev->rx_pkt_burst = removed_rx_burst;
 646         dev->tx_pkt_burst = removed_tx_burst;
 647 }
 648
 649 /**
 650  * Retrieve physical link information and update rx/tx_pkt_burst callbacks
 651  * accordingly.
 652  *
 653  * @param priv
 654  *   Pointer to private structure.
 655  * @param wait_to_complete
 656  *   Wait for request completion (ignored).
 657  */
 658 int
 659 priv_link_update(struct priv *priv, int wait_to_complete __rte_unused)
 660 {
 661         struct rte_eth_dev *dev = priv->dev;
 662         struct utsname utsname;
 663         int ver[3];
 664         int ret;
 665         struct rte_eth_link dev_link = dev->data->dev_link;
 666
 667         if (uname(&utsname) == -1 ||
 668             sscanf(utsname.release, "%d.%d.%d",
 669                    &ver[0], &ver[1], &ver[2]) != 3 ||
 670             KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0))
 671                 ret = mlx5_link_update_unlocked_gset(dev);
 672         else
 673                 ret = mlx5_link_update_unlocked_gs(dev);
 674         /* If lsc interrupt is disabled, should always be ready for traffic. */
 675         if (!dev->data->dev_conf.intr_conf.lsc) {
 676                 priv_link_start(priv);
 677                 return ret;
 678         }
 679         /* Re-select burst callbacks only if link status has been changed. */
 680         if (!ret && dev_link.link_status != dev->data->dev_link.link_status) {
 681                 if (dev->data->dev_link.link_status == ETH_LINK_UP)
 682                         priv_link_start(priv);
 683                 else
 684                         priv_link_stop(priv);
 685         }
 686         return ret;
 687 }
 688
 689 /**
 690  * Querying the link status till it changes to the desired state.
 691  * Number of query attempts is bounded by MLX5_MAX_LINK_QUERY_ATTEMPTS.
 692  *
 693  * @param priv
 694  *   Pointer to private structure.
 695  * @param status
 696  *   Link desired status.
 697  *
 698  * @return
 699  *   0 on success, negative errno value on failure.
 700  */
 701 int
 702 priv_force_link_status_change(struct priv *priv, int status)
 703 {
 704         int try = 0;
 705
 706         while (try < MLX5_MAX_LINK_QUERY_ATTEMPTS) {
 707                 priv_link_update(priv, 0);
 708                 if (priv->dev->data->dev_link.link_status == status)
 709                         return 0;
 710                 try++;
 711                 sleep(1);
 712         }
 713         return -EAGAIN;
 714 }
 715
 716 /**
 717  * DPDK callback to retrieve physical link information.
 718  *
 719  * @param dev
 720  *   Pointer to Ethernet device structure.
 721  * @param wait_to_complete
 722  *   Wait for request completion (ignored).
 723  *
 724  * @return
 725  *   0 on success, -1 on error.
 726  */
 727 int
 728 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete __rte_unused)
 729 {
 730         struct priv *priv = dev->data->dev_private;
 731         int ret;
 732
 733         ret = priv_link_update(priv, wait_to_complete);
 734         return ret;
 735 }
 736
 737 /**
 738  * DPDK callback to change the MTU.
 739  *
 740  * @param dev
 741  *   Pointer to Ethernet device structure.
 742  * @param in_mtu
 743  *   New MTU.
 744  *
 745  * @return
 746  *   0 on success, negative errno value on failure.
 747  */
 748 int
 749 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 750 {
 751         struct priv *priv = dev->data->dev_private;
 752         uint16_t kern_mtu;
 753         int ret = 0;
 754
 755         ret = priv_get_mtu(priv, &kern_mtu);
 756         if (ret)
 757                 goto out;
 758         /* Set kernel interface MTU first. */
 759         ret = priv_set_mtu(priv, mtu);
 760         if (ret)
 761                 goto out;
 762         ret = priv_get_mtu(priv, &kern_mtu);
 763         if (ret)
 764                 goto out;
 765         if (kern_mtu == mtu) {
 766                 priv->mtu = mtu;
 767                 DEBUG("adapter port %u MTU set to %u", priv->port, mtu);
 768         }
 769         return 0;
 770 out:
 771         ret = errno;
 772         WARN("cannot set port %u MTU to %u: %s", priv->port, mtu,
 773              strerror(ret));
 774         assert(ret >= 0);
 775         return -ret;
 776 }
 777
 778 /**
 779  * DPDK callback to get flow control status.
 780  *
 781  * @param dev
 782  *   Pointer to Ethernet device structure.
 783  * @param[out] fc_conf
 784  *   Flow control output buffer.
 785  *
 786  * @return
 787  *   0 on success, negative errno value on failure.
 788  */
 789 int
 790 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 791 {
 792         struct priv *priv = dev->data->dev_private;
 793         struct ifreq ifr;
 794         struct ethtool_pauseparam ethpause = {
 795                 .cmd = ETHTOOL_GPAUSEPARAM
 796         };
 797         int ret;
 798
 799         ifr.ifr_data = (void *)&ethpause;
 800         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 801                 ret = errno;
 802                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)"
 803                      " failed: %s",
 804                      strerror(ret));
 805                 goto out;
 806         }
 807         fc_conf->autoneg = ethpause.autoneg;
 808         if (ethpause.rx_pause && ethpause.tx_pause)
 809                 fc_conf->mode = RTE_FC_FULL;
 810         else if (ethpause.rx_pause)
 811                 fc_conf->mode = RTE_FC_RX_PAUSE;
 812         else if (ethpause.tx_pause)
 813                 fc_conf->mode = RTE_FC_TX_PAUSE;
 814         else
 815                 fc_conf->mode = RTE_FC_NONE;
 816         ret = 0;
 817 out:
 818         assert(ret >= 0);
 819         return -ret;
 820 }
 821
 822 /**
 823  * DPDK callback to modify flow control parameters.
 824  *
 825  * @param dev
 826  *   Pointer to Ethernet device structure.
 827  * @param[in] fc_conf
 828  *   Flow control parameters.
 829  *
 830  * @return
 831  *   0 on success, negative errno value on failure.
 832  */
 833 int
 834 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 835 {
 836         struct priv *priv = dev->data->dev_private;
 837         struct ifreq ifr;
 838         struct ethtool_pauseparam ethpause = {
 839                 .cmd = ETHTOOL_SPAUSEPARAM
 840         };
 841         int ret;
 842
 843         ifr.ifr_data = (void *)&ethpause;
 844         ethpause.autoneg = fc_conf->autoneg;
 845         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 846             (fc_conf->mode & RTE_FC_RX_PAUSE))
 847                 ethpause.rx_pause = 1;
 848         else
 849                 ethpause.rx_pause = 0;
 850
 851         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 852             (fc_conf->mode & RTE_FC_TX_PAUSE))
 853                 ethpause.tx_pause = 1;
 854         else
 855                 ethpause.tx_pause = 0;
 856         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 857                 ret = errno;
 858                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
 859                      " failed: %s",
 860                      strerror(ret));
 861                 goto out;
 862         }
 863         ret = 0;
 864 out:
 865         assert(ret >= 0);
 866         return -ret;
 867 }
 868
 869 /**
 870  * Get PCI information from struct ibv_device.
 871  *
 872  * @param device
 873  *   Pointer to Ethernet device structure.
 874  * @param[out] pci_addr
 875  *   PCI bus address output buffer.
 876  *
 877  * @return
 878  *   0 on success, -1 on failure and errno is set.
 879  */
 880 int
 881 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
 882                             struct rte_pci_addr *pci_addr)
 883 {
 884         FILE *file;
 885         char line[32];
 886         MKSTR(path, "%s/device/uevent", device->ibdev_path);
 887
 888         file = fopen(path, "rb");
 889         if (file == NULL)
 890                 return -1;
 891         while (fgets(line, sizeof(line), file) == line) {
 892                 size_t len = strlen(line);
 893                 int ret;
 894
 895                 /* Truncate long lines. */
 896                 if (len == (sizeof(line) - 1))
 897                         while (line[(len - 1)] != '\n') {
 898                                 ret = fgetc(file);
 899                                 if (ret == EOF)
 900                                         break;
 901                                 line[(len - 1)] = ret;
 902                         }
 903                 /* Extract information. */
 904                 if (sscanf(line,
 905                            "PCI_SLOT_NAME="
 906                            "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
 907                            &pci_addr->domain,
 908                            &pci_addr->bus,
 909                            &pci_addr->devid,
 910                            &pci_addr->function) == 4) {
 911                         ret = 0;
 912                         break;
 913                 }
 914         }
 915         fclose(file);
 916         return 0;
 917 }
 918
 919 /**
 920  * Update the link status.
 921  *
 922  * @param priv
 923  *   Pointer to private structure.
 924  *
 925  * @return
 926  *   Zero if the callback process can be called immediately.
 927  */
 928 static int
 929 priv_link_status_update(struct priv *priv)
 930 {
 931         struct rte_eth_link *link = &priv->dev->data->dev_link;
 932
 933         priv_link_update(priv, 0);
 934         if (((link->link_speed == 0) && link->link_status) ||
 935                 ((link->link_speed != 0) && !link->link_status)) {
 936                 /*
 937                  * Inconsistent status. Event likely occurred before the
 938                  * kernel netdevice exposes the new status.
 939                  */
 940                 if (!priv->pending_alarm) {
 941                         priv->pending_alarm = 1;
 942                         rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US,
 943                                           mlx5_dev_link_status_handler,
 944                                           priv->dev);
 945                 }
 946                 return 1;
 947         } else if (unlikely(priv->pending_alarm)) {
 948                 /* Link interrupt occurred while alarm is already scheduled. */
 949                 priv->pending_alarm = 0;
 950                 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, priv->dev);
 951         }
 952         return 0;
 953 }
 954
 955 /**
 956  * Device status handler.
 957  *
 958  * @param priv
 959  *   Pointer to private structure.
 960  * @param events
 961  *   Pointer to event flags holder.
 962  *
 963  * @return
 964  *   Events bitmap of callback process which can be called immediately.
 965  */
 966 static uint32_t
 967 priv_dev_status_handler(struct priv *priv)
 968 {
 969         struct ibv_async_event event;
 970         uint32_t ret = 0;
 971
 972         /* Read all message and acknowledge them. */
 973         for (;;) {
 974                 if (mlx5_glue->get_async_event(priv->ctx, &event))
 975                         break;
 976                 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
 977                         event.event_type == IBV_EVENT_PORT_ERR) &&
 978                         (priv->dev->data->dev_conf.intr_conf.lsc == 1))
 979                         ret |= (1 << RTE_ETH_EVENT_INTR_LSC);
 980                 else if (event.event_type == IBV_EVENT_DEVICE_FATAL &&
 981                         priv->dev->data->dev_conf.intr_conf.rmv == 1)
 982                         ret |= (1 << RTE_ETH_EVENT_INTR_RMV);
 983                 else
 984                         DEBUG("event type %d on port %d not handled",
 985                               event.event_type, event.element.port_num);
 986                 mlx5_glue->ack_async_event(&event);
 987         }
 988         if (ret & (1 << RTE_ETH_EVENT_INTR_LSC))
 989                 if (priv_link_status_update(priv))
 990                         ret &= ~(1 << RTE_ETH_EVENT_INTR_LSC);
 991         return ret;
 992 }
 993
 994 /**
 995  * Handle delayed link status event.
 996  *
 997  * @param arg
 998  *   Registered argument.
 999  */
1000 void
1001 mlx5_dev_link_status_handler(void *arg)
1002 {
1003         struct rte_eth_dev *dev = arg;
1004         struct priv *priv = dev->data->dev_private;
1005         int ret;
1006
1007         priv->pending_alarm = 0;
1008         ret = priv_link_status_update(priv);
1009         if (!ret)
1010                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1011 }
1012
1013 /**
1014  * Handle interrupts from the NIC.
1015  *
1016  * @param[in] intr_handle
1017  *   Interrupt handler.
1018  * @param cb_arg
1019  *   Callback argument.
1020  */
1021 void
1022 mlx5_dev_interrupt_handler(void *cb_arg)
1023 {
1024         struct rte_eth_dev *dev = cb_arg;
1025         struct priv *priv = dev->data->dev_private;
1026         uint32_t events;
1027
1028         events = priv_dev_status_handler(priv);
1029         if (events & (1 << RTE_ETH_EVENT_INTR_LSC))
1030                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1031         if (events & (1 << RTE_ETH_EVENT_INTR_RMV))
1032                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL);
1033 }
1034
1035 /**
1036  * Handle interrupts from the socket.
1037  *
1038  * @param cb_arg
1039  *   Callback argument.
1040  */
1041 static void
1042 mlx5_dev_handler_socket(void *cb_arg)
1043 {
1044         struct rte_eth_dev *dev = cb_arg;
1045         struct priv *priv = dev->data->dev_private;
1046
1047         priv_socket_handle(priv);
1048 }
1049
1050 /**
1051  * Uninstall interrupt handler.
1052  *
1053  * @param priv
1054  *   Pointer to private structure.
1055  * @param dev
1056  *   Pointer to the rte_eth_dev structure.
1057  */
1058 void
1059 priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev)
1060 {
1061         if (dev->data->dev_conf.intr_conf.lsc ||
1062             dev->data->dev_conf.intr_conf.rmv)
1063                 rte_intr_callback_unregister(&priv->intr_handle,
1064                                              mlx5_dev_interrupt_handler, dev);
1065         if (priv->primary_socket)
1066                 rte_intr_callback_unregister(&priv->intr_handle_socket,
1067                                              mlx5_dev_handler_socket, dev);
1068         if (priv->pending_alarm) {
1069                 priv->pending_alarm = 0;
1070                 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev);
1071         }
1072         priv->intr_handle.fd = 0;
1073         priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1074         priv->intr_handle_socket.fd = 0;
1075         priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN;
1076 }
1077
1078 /**
1079  * Install interrupt handler.
1080  *
1081  * @param priv
1082  *   Pointer to private structure.
1083  * @param dev
1084  *   Pointer to the rte_eth_dev structure.
1085  */
1086 void
1087 priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev)
1088 {
1089         int rc, flags;
1090
1091         assert(priv->ctx->async_fd > 0);
1092         flags = fcntl(priv->ctx->async_fd, F_GETFL);
1093         rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1094         if (rc < 0) {
1095                 INFO("failed to change file descriptor async event queue");
1096                 dev->data->dev_conf.intr_conf.lsc = 0;
1097                 dev->data->dev_conf.intr_conf.rmv = 0;
1098         }
1099         if (dev->data->dev_conf.intr_conf.lsc ||
1100             dev->data->dev_conf.intr_conf.rmv) {
1101                 priv->intr_handle.fd = priv->ctx->async_fd;
1102                 priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
1103                 rte_intr_callback_register(&priv->intr_handle,
1104                                            mlx5_dev_interrupt_handler, dev);
1105         }
1106         rc = priv_socket_init(priv);
1107         if (!rc && priv->primary_socket) {
1108                 priv->intr_handle_socket.fd = priv->primary_socket;
1109                 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT;
1110                 rte_intr_callback_register(&priv->intr_handle_socket,
1111                                            mlx5_dev_handler_socket, dev);
1112         }
1113 }
1114
1115 /**
1116  * Change the link state (UP / DOWN).
1117  *
1118  * @param priv
1119  *   Pointer to private data structure.
1120  * @param up
1121  *   Nonzero for link up, otherwise link down.
1122  *
1123  * @return
1124  *   0 on success, errno value on failure.
1125  */
1126 static int
1127 priv_dev_set_link(struct priv *priv, int up)
1128 {
1129         return priv_set_flags(priv, ~IFF_UP, up ? IFF_UP : ~IFF_UP);
1130 }
1131
1132 /**
1133  * DPDK callback to bring the link DOWN.
1134  *
1135  * @param dev
1136  *   Pointer to Ethernet device structure.
1137  *
1138  * @return
1139  *   0 on success, errno value on failure.
1140  */
1141 int
1142 mlx5_set_link_down(struct rte_eth_dev *dev)
1143 {
1144         struct priv *priv = dev->data->dev_private;
1145         int err;
1146
1147         err = priv_dev_set_link(priv, 0);
1148         return err;
1149 }
1150
1151 /**
1152  * DPDK callback to bring the link UP.
1153  *
1154  * @param dev
1155  *   Pointer to Ethernet device structure.
1156  *
1157  * @return
1158  *   0 on success, errno value on failure.
1159  */
1160 int
1161 mlx5_set_link_up(struct rte_eth_dev *dev)
1162 {
1163         struct priv *priv = dev->data->dev_private;
1164         int err;
1165
1166         err = priv_dev_set_link(priv, 1);
1167         return err;
1168 }
1169
1170 /**
1171  * Configure the TX function to use.
1172  *
1173  * @param priv
1174  *   Pointer to private data structure.
1175  * @param dev
1176  *   Pointer to rte_eth_dev structure.
1177  *
1178  * @return
1179  *   Pointer to selected Tx burst function.
1180  */
1181 eth_tx_burst_t
1182 priv_select_tx_function(struct priv *priv, struct rte_eth_dev *dev)
1183 {
1184         eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst;
1185         struct mlx5_dev_config *config = &priv->config;
1186         uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
1187         int tso = !!(tx_offloads & (DEV_TX_OFFLOAD_TCP_TSO |
1188                                     DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
1189                                     DEV_TX_OFFLOAD_GRE_TNL_TSO));
1190         int vlan_insert = !!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT);
1191
1192         assert(priv != NULL);
1193         /* Select appropriate TX function. */
1194         if (vlan_insert || tso)
1195                 return tx_pkt_burst;
1196         if (config->mps == MLX5_MPW_ENHANCED) {
1197                 if (priv_check_vec_tx_support(priv, dev) > 0) {
1198                         if (priv_check_raw_vec_tx_support(priv, dev) > 0)
1199                                 tx_pkt_burst = mlx5_tx_burst_raw_vec;
1200                         else
1201                                 tx_pkt_burst = mlx5_tx_burst_vec;
1202                         DEBUG("selected Enhanced MPW TX vectorized function");
1203                 } else {
1204                         tx_pkt_burst = mlx5_tx_burst_empw;
1205                         DEBUG("selected Enhanced MPW TX function");
1206                 }
1207         } else if (config->mps && (config->txq_inline > 0)) {
1208                 tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1209                 DEBUG("selected MPW inline TX function");
1210         } else if (config->mps) {
1211                 tx_pkt_burst = mlx5_tx_burst_mpw;
1212                 DEBUG("selected MPW TX function");
1213         }
1214         return tx_pkt_burst;
1215 }
1216
1217 /**
1218  * Configure the RX function to use.
1219  *
1220  * @param priv
1221  *   Pointer to private data structure.
1222  * @param dev
1223  *   Pointer to rte_eth_dev structure.
1224  *
1225  * @return
1226  *   Pointer to selected Rx burst function.
1227  */
1228 eth_rx_burst_t
1229 priv_select_rx_function(struct priv *priv, __rte_unused struct rte_eth_dev *dev)
1230 {
1231         eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
1232
1233         assert(priv != NULL);
1234         if (priv_check_vec_rx_support(priv) > 0) {
1235                 rx_pkt_burst = mlx5_rx_burst_vec;
1236                 DEBUG("selected RX vectorized function");
1237         }
1238         return rx_pkt_burst;
1239 }
1240
1241 /**
1242  * Check if mlx5 device was removed.
1243  *
1244  * @param dev
1245  *   Pointer to Ethernet device structure.
1246  *
1247  * @return
1248  *   1 when device is removed, otherwise 0.
1249  */
1250 int
1251 mlx5_is_removed(struct rte_eth_dev *dev)
1252 {
1253         struct ibv_device_attr device_attr;
1254         struct priv *priv = dev->data->dev_private;
1255
1256         if (mlx5_glue->query_device(priv->ctx, &device_attr) == EIO)
1257                 return 1;
1258         return 0;
1259 }