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  * Ethernet device configuration.
 273  *
 274  * Prepare the driver for a given number of TX and RX queues.
 275  *
 276  * @param dev
 277  *   Pointer to Ethernet device structure.
 278  *
 279  * @return
 280  *   0 on success, errno value on failure.
 281  */
 282 static int
 283 dev_configure(struct rte_eth_dev *dev)
 284 {
 285         struct priv *priv = dev->data->dev_private;
 286         unsigned int rxqs_n = dev->data->nb_rx_queues;
 287         unsigned int txqs_n = dev->data->nb_tx_queues;
 288         unsigned int i;
 289         unsigned int j;
 290         unsigned int reta_idx_n;
 291         const uint8_t use_app_rss_key =
 292                 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
 293         uint64_t supp_tx_offloads = mlx5_priv_get_tx_port_offloads(priv);
 294         uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
 295         uint64_t supp_rx_offloads =
 296                 (mlx5_priv_get_rx_port_offloads(priv) |
 297                  mlx5_priv_get_rx_queue_offloads(priv));
 298         uint64_t rx_offloads = dev->data->dev_conf.rxmode.offloads;
 299
 300         if ((tx_offloads & supp_tx_offloads) != tx_offloads) {
 301                 ERROR("Some Tx offloads are not supported "
 302                       "requested 0x%" PRIx64 " supported 0x%" PRIx64,
 303                       tx_offloads, supp_tx_offloads);
 304                 return ENOTSUP;
 305         }
 306         if ((rx_offloads & supp_rx_offloads) != rx_offloads) {
 307                 ERROR("Some Rx offloads are not supported "
 308                       "requested 0x%" PRIx64 " supported 0x%" PRIx64,
 309                       rx_offloads, supp_rx_offloads);
 310                 return ENOTSUP;
 311         }
 312         if (use_app_rss_key &&
 313             (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
 314              rss_hash_default_key_len)) {
 315                 /* MLX5 RSS only support 40bytes key. */
 316                 return EINVAL;
 317         }
 318         priv->rss_conf.rss_key =
 319                 rte_realloc(priv->rss_conf.rss_key,
 320                             rss_hash_default_key_len, 0);
 321         if (!priv->rss_conf.rss_key) {
 322                 ERROR("cannot allocate RSS hash key memory (%u)", rxqs_n);
 323                 return ENOMEM;
 324         }
 325         memcpy(priv->rss_conf.rss_key,
 326                use_app_rss_key ?
 327                dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
 328                rss_hash_default_key,
 329                rss_hash_default_key_len);
 330         priv->rss_conf.rss_key_len = rss_hash_default_key_len;
 331         priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
 332         priv->rxqs = (void *)dev->data->rx_queues;
 333         priv->txqs = (void *)dev->data->tx_queues;
 334         if (txqs_n != priv->txqs_n) {
 335                 INFO("%p: TX queues number update: %u -> %u",
 336                      (void *)dev, priv->txqs_n, txqs_n);
 337                 priv->txqs_n = txqs_n;
 338         }
 339         if (rxqs_n > priv->config.ind_table_max_size) {
 340                 ERROR("cannot handle this many RX queues (%u)", rxqs_n);
 341                 return EINVAL;
 342         }
 343         if (rxqs_n == priv->rxqs_n)
 344                 return 0;
 345         INFO("%p: RX queues number update: %u -> %u",
 346              (void *)dev, priv->rxqs_n, rxqs_n);
 347         priv->rxqs_n = rxqs_n;
 348         /* If the requested number of RX queues is not a power of two, use the
 349          * maximum indirection table size for better balancing.
 350          * The result is always rounded to the next power of two. */
 351         reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ?
 352                                      priv->config.ind_table_max_size :
 353                                      rxqs_n));
 354         if (priv_rss_reta_index_resize(priv, reta_idx_n))
 355                 return ENOMEM;
 356         /* When the number of RX queues is not a power of two, the remaining
 357          * table entries are padded with reused WQs and hashes are not spread
 358          * uniformly. */
 359         for (i = 0, j = 0; (i != reta_idx_n); ++i) {
 360                 (*priv->reta_idx)[i] = j;
 361                 if (++j == rxqs_n)
 362                         j = 0;
 363         }
 364         return 0;
 365 }
 366
 367 /**
 368  * DPDK callback for Ethernet device configuration.
 369  *
 370  * @param dev
 371  *   Pointer to Ethernet device structure.
 372  *
 373  * @return
 374  *   0 on success, negative errno value on failure.
 375  */
 376 int
 377 mlx5_dev_configure(struct rte_eth_dev *dev)
 378 {
 379         struct priv *priv = dev->data->dev_private;
 380         int ret;
 381
 382         priv_lock(priv);
 383         ret = dev_configure(dev);
 384         assert(ret >= 0);
 385         priv_unlock(priv);
 386         return -ret;
 387 }
 388
 389 /**
 390  * DPDK callback to get information about the device.
 391  *
 392  * @param dev
 393  *   Pointer to Ethernet device structure.
 394  * @param[out] info
 395  *   Info structure output buffer.
 396  */
 397 void
 398 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 399 {
 400         struct priv *priv = dev->data->dev_private;
 401         struct mlx5_dev_config *config = &priv->config;
 402         unsigned int max;
 403         char ifname[IF_NAMESIZE];
 404
 405         info->pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 406         priv_lock(priv);
 407         /* FIXME: we should ask the device for these values. */
 408         info->min_rx_bufsize = 32;
 409         info->max_rx_pktlen = 65536;
 410         /*
 411          * Since we need one CQ per QP, the limit is the minimum number
 412          * between the two values.
 413          */
 414         max = RTE_MIN(priv->device_attr.orig_attr.max_cq,
 415                       priv->device_attr.orig_attr.max_qp);
 416         /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
 417         if (max >= 65535)
 418                 max = 65535;
 419         info->max_rx_queues = max;
 420         info->max_tx_queues = max;
 421         info->max_mac_addrs = RTE_DIM(priv->mac);
 422         info->rx_queue_offload_capa =
 423                 mlx5_priv_get_rx_queue_offloads(priv);
 424         info->rx_offload_capa = (mlx5_priv_get_rx_port_offloads(priv) |
 425                                  info->rx_queue_offload_capa);
 426         info->tx_offload_capa = mlx5_priv_get_tx_port_offloads(priv);
 427         if (priv_get_ifname(priv, &ifname) == 0)
 428                 info->if_index = if_nametoindex(ifname);
 429         info->reta_size = priv->reta_idx_n ?
 430                 priv->reta_idx_n : config->ind_table_max_size;
 431         info->hash_key_size = priv->rss_conf.rss_key_len;
 432         info->speed_capa = priv->link_speed_capa;
 433         info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK;
 434         priv_unlock(priv);
 435 }
 436
 437 /**
 438  * Get supported packet types.
 439  *
 440  * @param dev
 441  *   Pointer to Ethernet device structure.
 442  *
 443  * @return
 444  *   A pointer to the supported Packet types array.
 445  */
 446 const uint32_t *
 447 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 448 {
 449         static const uint32_t ptypes[] = {
 450                 /* refers to rxq_cq_to_pkt_type() */
 451                 RTE_PTYPE_L2_ETHER,
 452                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 453                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 454                 RTE_PTYPE_L4_NONFRAG,
 455                 RTE_PTYPE_L4_FRAG,
 456                 RTE_PTYPE_L4_TCP,
 457                 RTE_PTYPE_L4_UDP,
 458                 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
 459                 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
 460                 RTE_PTYPE_INNER_L4_NONFRAG,
 461                 RTE_PTYPE_INNER_L4_FRAG,
 462                 RTE_PTYPE_INNER_L4_TCP,
 463                 RTE_PTYPE_INNER_L4_UDP,
 464                 RTE_PTYPE_UNKNOWN
 465         };
 466
 467         if (dev->rx_pkt_burst == mlx5_rx_burst ||
 468             dev->rx_pkt_burst == mlx5_rx_burst_vec)
 469                 return ptypes;
 470         return NULL;
 471 }
 472
 473 /**
 474  * DPDK callback to retrieve physical link information.
 475  *
 476  * @param dev
 477  *   Pointer to Ethernet device structure.
 478  *
 479  * @return
 480  *   0 on success, -1 on error.
 481  */
 482 static int
 483 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev)
 484 {
 485         struct priv *priv = dev->data->dev_private;
 486         struct ethtool_cmd edata = {
 487                 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
 488         };
 489         struct ifreq ifr;
 490         struct rte_eth_link dev_link;
 491         int link_speed = 0;
 492
 493         /* priv_lock() is not taken to allow concurrent calls. */
 494         if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
 495                 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
 496                 return -1;
 497         }
 498         memset(&dev_link, 0, sizeof(dev_link));
 499         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 500                                 (ifr.ifr_flags & IFF_RUNNING));
 501         ifr.ifr_data = (void *)&edata;
 502         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 503                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
 504                      strerror(errno));
 505                 return -1;
 506         }
 507         link_speed = ethtool_cmd_speed(&edata);
 508         if (link_speed == -1)
 509                 dev_link.link_speed = 0;
 510         else
 511                 dev_link.link_speed = link_speed;
 512         priv->link_speed_capa = 0;
 513         if (edata.supported & SUPPORTED_Autoneg)
 514                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 515         if (edata.supported & (SUPPORTED_1000baseT_Full |
 516                                SUPPORTED_1000baseKX_Full))
 517                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 518         if (edata.supported & SUPPORTED_10000baseKR_Full)
 519                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 520         if (edata.supported & (SUPPORTED_40000baseKR4_Full |
 521                                SUPPORTED_40000baseCR4_Full |
 522                                SUPPORTED_40000baseSR4_Full |
 523                                SUPPORTED_40000baseLR4_Full))
 524                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 525         dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
 526                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 527         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 528                         ETH_LINK_SPEED_FIXED);
 529         if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
 530                 /* Link status changed. */
 531                 dev->data->dev_link = dev_link;
 532                 return 0;
 533         }
 534         /* Link status is still the same. */
 535         return -1;
 536 }
 537
 538 /**
 539  * Retrieve physical link information (unlocked version using new ioctl).
 540  *
 541  * @param dev
 542  *   Pointer to Ethernet device structure.
 543  *
 544  * @return
 545  *   0 on success, -1 on error.
 546  */
 547 static int
 548 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev)
 549 {
 550         struct priv *priv = dev->data->dev_private;
 551         struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
 552         struct ifreq ifr;
 553         struct rte_eth_link dev_link;
 554         uint64_t sc;
 555
 556         if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
 557                 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
 558                 return -1;
 559         }
 560         memset(&dev_link, 0, sizeof(dev_link));
 561         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 562                                 (ifr.ifr_flags & IFF_RUNNING));
 563         ifr.ifr_data = (void *)&gcmd;
 564         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 565                 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
 566                       strerror(errno));
 567                 return -1;
 568         }
 569         gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
 570
 571         alignas(struct ethtool_link_settings)
 572         uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
 573                      sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
 574         struct ethtool_link_settings *ecmd = (void *)data;
 575
 576         *ecmd = gcmd;
 577         ifr.ifr_data = (void *)ecmd;
 578         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 579                 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
 580                       strerror(errno));
 581                 return -1;
 582         }
 583         dev_link.link_speed = ecmd->speed;
 584         sc = ecmd->link_mode_masks[0] |
 585                 ((uint64_t)ecmd->link_mode_masks[1] << 32);
 586         priv->link_speed_capa = 0;
 587         if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
 588                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 589         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
 590                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
 591                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 592         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
 593                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
 594                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
 595                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 596         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
 597                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
 598                 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
 599         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
 600                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
 601                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
 602                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
 603                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 604         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
 605                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
 606                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
 607                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
 608                 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
 609         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
 610                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
 611                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
 612                 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
 613         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
 614                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
 615                 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
 616         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
 617                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
 618                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
 619                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
 620                 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
 621         dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
 622                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 623         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 624                                   ETH_LINK_SPEED_FIXED);
 625         if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
 626                 /* Link status changed. */
 627                 dev->data->dev_link = dev_link;
 628                 return 0;
 629         }
 630         /* Link status is still the same. */
 631         return -1;
 632 }
 633
 634 /**
 635  * Enable receiving and transmitting traffic.
 636  *
 637  * @param priv
 638  *   Pointer to private structure.
 639  */
 640 static void
 641 priv_link_start(struct priv *priv)
 642 {
 643         struct rte_eth_dev *dev = priv->dev;
 644         int err;
 645
 646         dev->tx_pkt_burst = priv_select_tx_function(priv, dev);
 647         dev->rx_pkt_burst = priv_select_rx_function(priv, dev);
 648         err = priv_dev_traffic_enable(priv, dev);
 649         if (err)
 650                 ERROR("%p: error occurred while configuring control flows: %s",
 651                       (void *)priv, strerror(err));
 652         err = priv_flow_start(priv, &priv->flows);
 653         if (err)
 654                 ERROR("%p: error occurred while configuring flows: %s",
 655                       (void *)priv, strerror(err));
 656 }
 657
 658 /**
 659  * Disable receiving and transmitting traffic.
 660  *
 661  * @param priv
 662  *   Pointer to private structure.
 663  */
 664 static void
 665 priv_link_stop(struct priv *priv)
 666 {
 667         struct rte_eth_dev *dev = priv->dev;
 668
 669         priv_flow_stop(priv, &priv->flows);
 670         priv_dev_traffic_disable(priv, dev);
 671         dev->rx_pkt_burst = removed_rx_burst;
 672         dev->tx_pkt_burst = removed_tx_burst;
 673 }
 674
 675 /**
 676  * Retrieve physical link information and update rx/tx_pkt_burst callbacks
 677  * accordingly.
 678  *
 679  * @param priv
 680  *   Pointer to private structure.
 681  * @param wait_to_complete
 682  *   Wait for request completion (ignored).
 683  */
 684 int
 685 priv_link_update(struct priv *priv, int wait_to_complete __rte_unused)
 686 {
 687         struct rte_eth_dev *dev = priv->dev;
 688         struct utsname utsname;
 689         int ver[3];
 690         int ret;
 691         struct rte_eth_link dev_link = dev->data->dev_link;
 692
 693         if (uname(&utsname) == -1 ||
 694             sscanf(utsname.release, "%d.%d.%d",
 695                    &ver[0], &ver[1], &ver[2]) != 3 ||
 696             KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0))
 697                 ret = mlx5_link_update_unlocked_gset(dev);
 698         else
 699                 ret = mlx5_link_update_unlocked_gs(dev);
 700         /* If lsc interrupt is disabled, should always be ready for traffic. */
 701         if (!dev->data->dev_conf.intr_conf.lsc) {
 702                 priv_link_start(priv);
 703                 return ret;
 704         }
 705         /* Re-select burst callbacks only if link status has been changed. */
 706         if (!ret && dev_link.link_status != dev->data->dev_link.link_status) {
 707                 if (dev->data->dev_link.link_status == ETH_LINK_UP)
 708                         priv_link_start(priv);
 709                 else
 710                         priv_link_stop(priv);
 711         }
 712         return ret;
 713 }
 714
 715 /**
 716  * Querying the link status till it changes to the desired state.
 717  * Number of query attempts is bounded by MLX5_MAX_LINK_QUERY_ATTEMPTS.
 718  *
 719  * @param priv
 720  *   Pointer to private structure.
 721  * @param status
 722  *   Link desired status.
 723  *
 724  * @return
 725  *   0 on success, negative errno value on failure.
 726  */
 727 int
 728 priv_force_link_status_change(struct priv *priv, int status)
 729 {
 730         int try = 0;
 731
 732         while (try < MLX5_MAX_LINK_QUERY_ATTEMPTS) {
 733                 priv_link_update(priv, 0);
 734                 if (priv->dev->data->dev_link.link_status == status)
 735                         return 0;
 736                 try++;
 737                 sleep(1);
 738         }
 739         return -EAGAIN;
 740 }
 741
 742 /**
 743  * DPDK callback to retrieve physical link information.
 744  *
 745  * @param dev
 746  *   Pointer to Ethernet device structure.
 747  * @param wait_to_complete
 748  *   Wait for request completion (ignored).
 749  *
 750  * @return
 751  *   0 on success, -1 on error.
 752  */
 753 int
 754 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete __rte_unused)
 755 {
 756         struct priv *priv = dev->data->dev_private;
 757         int ret;
 758
 759         priv_lock(priv);
 760         ret = priv_link_update(priv, wait_to_complete);
 761         priv_unlock(priv);
 762         return ret;
 763 }
 764
 765 /**
 766  * DPDK callback to change the MTU.
 767  *
 768  * @param dev
 769  *   Pointer to Ethernet device structure.
 770  * @param in_mtu
 771  *   New MTU.
 772  *
 773  * @return
 774  *   0 on success, negative errno value on failure.
 775  */
 776 int
 777 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 778 {
 779         struct priv *priv = dev->data->dev_private;
 780         uint16_t kern_mtu;
 781         int ret = 0;
 782
 783         priv_lock(priv);
 784         ret = priv_get_mtu(priv, &kern_mtu);
 785         if (ret)
 786                 goto out;
 787         /* Set kernel interface MTU first. */
 788         ret = priv_set_mtu(priv, mtu);
 789         if (ret)
 790                 goto out;
 791         ret = priv_get_mtu(priv, &kern_mtu);
 792         if (ret)
 793                 goto out;
 794         if (kern_mtu == mtu) {
 795                 priv->mtu = mtu;
 796                 DEBUG("adapter port %u MTU set to %u", priv->port, mtu);
 797         }
 798         priv_unlock(priv);
 799         return 0;
 800 out:
 801         ret = errno;
 802         WARN("cannot set port %u MTU to %u: %s", priv->port, mtu,
 803              strerror(ret));
 804         priv_unlock(priv);
 805         assert(ret >= 0);
 806         return -ret;
 807 }
 808
 809 /**
 810  * DPDK callback to get flow control status.
 811  *
 812  * @param dev
 813  *   Pointer to Ethernet device structure.
 814  * @param[out] fc_conf
 815  *   Flow control output buffer.
 816  *
 817  * @return
 818  *   0 on success, negative errno value on failure.
 819  */
 820 int
 821 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 822 {
 823         struct priv *priv = dev->data->dev_private;
 824         struct ifreq ifr;
 825         struct ethtool_pauseparam ethpause = {
 826                 .cmd = ETHTOOL_GPAUSEPARAM
 827         };
 828         int ret;
 829
 830         ifr.ifr_data = (void *)&ethpause;
 831         priv_lock(priv);
 832         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 833                 ret = errno;
 834                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)"
 835                      " failed: %s",
 836                      strerror(ret));
 837                 goto out;
 838         }
 839         fc_conf->autoneg = ethpause.autoneg;
 840         if (ethpause.rx_pause && ethpause.tx_pause)
 841                 fc_conf->mode = RTE_FC_FULL;
 842         else if (ethpause.rx_pause)
 843                 fc_conf->mode = RTE_FC_RX_PAUSE;
 844         else if (ethpause.tx_pause)
 845                 fc_conf->mode = RTE_FC_TX_PAUSE;
 846         else
 847                 fc_conf->mode = RTE_FC_NONE;
 848         ret = 0;
 849 out:
 850         priv_unlock(priv);
 851         assert(ret >= 0);
 852         return -ret;
 853 }
 854
 855 /**
 856  * DPDK callback to modify flow control parameters.
 857  *
 858  * @param dev
 859  *   Pointer to Ethernet device structure.
 860  * @param[in] fc_conf
 861  *   Flow control parameters.
 862  *
 863  * @return
 864  *   0 on success, negative errno value on failure.
 865  */
 866 int
 867 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 868 {
 869         struct priv *priv = dev->data->dev_private;
 870         struct ifreq ifr;
 871         struct ethtool_pauseparam ethpause = {
 872                 .cmd = ETHTOOL_SPAUSEPARAM
 873         };
 874         int ret;
 875
 876         ifr.ifr_data = (void *)&ethpause;
 877         ethpause.autoneg = fc_conf->autoneg;
 878         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 879             (fc_conf->mode & RTE_FC_RX_PAUSE))
 880                 ethpause.rx_pause = 1;
 881         else
 882                 ethpause.rx_pause = 0;
 883
 884         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 885             (fc_conf->mode & RTE_FC_TX_PAUSE))
 886                 ethpause.tx_pause = 1;
 887         else
 888                 ethpause.tx_pause = 0;
 889         priv_lock(priv);
 890         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 891                 ret = errno;
 892                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
 893                      " failed: %s",
 894                      strerror(ret));
 895                 goto out;
 896         }
 897         ret = 0;
 898 out:
 899         priv_unlock(priv);
 900         assert(ret >= 0);
 901         return -ret;
 902 }
 903
 904 /**
 905  * Get PCI information from struct ibv_device.
 906  *
 907  * @param device
 908  *   Pointer to Ethernet device structure.
 909  * @param[out] pci_addr
 910  *   PCI bus address output buffer.
 911  *
 912  * @return
 913  *   0 on success, -1 on failure and errno is set.
 914  */
 915 int
 916 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
 917                             struct rte_pci_addr *pci_addr)
 918 {
 919         FILE *file;
 920         char line[32];
 921         MKSTR(path, "%s/device/uevent", device->ibdev_path);
 922
 923         file = fopen(path, "rb");
 924         if (file == NULL)
 925                 return -1;
 926         while (fgets(line, sizeof(line), file) == line) {
 927                 size_t len = strlen(line);
 928                 int ret;
 929
 930                 /* Truncate long lines. */
 931                 if (len == (sizeof(line) - 1))
 932                         while (line[(len - 1)] != '\n') {
 933                                 ret = fgetc(file);
 934                                 if (ret == EOF)
 935                                         break;
 936                                 line[(len - 1)] = ret;
 937                         }
 938                 /* Extract information. */
 939                 if (sscanf(line,
 940                            "PCI_SLOT_NAME="
 941                            "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
 942                            &pci_addr->domain,
 943                            &pci_addr->bus,
 944                            &pci_addr->devid,
 945                            &pci_addr->function) == 4) {
 946                         ret = 0;
 947                         break;
 948                 }
 949         }
 950         fclose(file);
 951         return 0;
 952 }
 953
 954 /**
 955  * Update the link status.
 956  *
 957  * @param priv
 958  *   Pointer to private structure.
 959  *
 960  * @return
 961  *   Zero if the callback process can be called immediately.
 962  */
 963 static int
 964 priv_link_status_update(struct priv *priv)
 965 {
 966         struct rte_eth_link *link = &priv->dev->data->dev_link;
 967
 968         priv_link_update(priv, 0);
 969         if (((link->link_speed == 0) && link->link_status) ||
 970                 ((link->link_speed != 0) && !link->link_status)) {
 971                 /*
 972                  * Inconsistent status. Event likely occurred before the
 973                  * kernel netdevice exposes the new status.
 974                  */
 975                 if (!priv->pending_alarm) {
 976                         priv->pending_alarm = 1;
 977                         rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US,
 978                                           mlx5_dev_link_status_handler,
 979                                           priv->dev);
 980                 }
 981                 return 1;
 982         } else if (unlikely(priv->pending_alarm)) {
 983                 /* Link interrupt occurred while alarm is already scheduled. */
 984                 priv->pending_alarm = 0;
 985                 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, priv->dev);
 986         }
 987         return 0;
 988 }
 989
 990 /**
 991  * Device status handler.
 992  *
 993  * @param priv
 994  *   Pointer to private structure.
 995  * @param events
 996  *   Pointer to event flags holder.
 997  *
 998  * @return
 999  *   Events bitmap of callback process which can be called immediately.
1000  */
1001 static uint32_t
1002 priv_dev_status_handler(struct priv *priv)
1003 {
1004         struct ibv_async_event event;
1005         uint32_t ret = 0;
1006
1007         /* Read all message and acknowledge them. */
1008         for (;;) {
1009                 if (mlx5_glue->get_async_event(priv->ctx, &event))
1010                         break;
1011                 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
1012                         event.event_type == IBV_EVENT_PORT_ERR) &&
1013                         (priv->dev->data->dev_conf.intr_conf.lsc == 1))
1014                         ret |= (1 << RTE_ETH_EVENT_INTR_LSC);
1015                 else if (event.event_type == IBV_EVENT_DEVICE_FATAL &&
1016                         priv->dev->data->dev_conf.intr_conf.rmv == 1)
1017                         ret |= (1 << RTE_ETH_EVENT_INTR_RMV);
1018                 else
1019                         DEBUG("event type %d on port %d not handled",
1020                               event.event_type, event.element.port_num);
1021                 mlx5_glue->ack_async_event(&event);
1022         }
1023         if (ret & (1 << RTE_ETH_EVENT_INTR_LSC))
1024                 if (priv_link_status_update(priv))
1025                         ret &= ~(1 << RTE_ETH_EVENT_INTR_LSC);
1026         return ret;
1027 }
1028
1029 /**
1030  * Handle delayed link status event.
1031  *
1032  * @param arg
1033  *   Registered argument.
1034  */
1035 void
1036 mlx5_dev_link_status_handler(void *arg)
1037 {
1038         struct rte_eth_dev *dev = arg;
1039         struct priv *priv = dev->data->dev_private;
1040         int ret;
1041
1042         while (!priv_trylock(priv)) {
1043                 /* Alarm is being canceled. */
1044                 if (priv->pending_alarm == 0)
1045                         return;
1046                 rte_pause();
1047         }
1048         priv->pending_alarm = 0;
1049         ret = priv_link_status_update(priv);
1050         priv_unlock(priv);
1051         if (!ret)
1052                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1053 }
1054
1055 /**
1056  * Handle interrupts from the NIC.
1057  *
1058  * @param[in] intr_handle
1059  *   Interrupt handler.
1060  * @param cb_arg
1061  *   Callback argument.
1062  */
1063 void
1064 mlx5_dev_interrupt_handler(void *cb_arg)
1065 {
1066         struct rte_eth_dev *dev = cb_arg;
1067         struct priv *priv = dev->data->dev_private;
1068         uint32_t events;
1069
1070         priv_lock(priv);
1071         events = priv_dev_status_handler(priv);
1072         priv_unlock(priv);
1073         if (events & (1 << RTE_ETH_EVENT_INTR_LSC))
1074                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1075         if (events & (1 << RTE_ETH_EVENT_INTR_RMV))
1076                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL);
1077 }
1078
1079 /**
1080  * Handle interrupts from the socket.
1081  *
1082  * @param cb_arg
1083  *   Callback argument.
1084  */
1085 static void
1086 mlx5_dev_handler_socket(void *cb_arg)
1087 {
1088         struct rte_eth_dev *dev = cb_arg;
1089         struct priv *priv = dev->data->dev_private;
1090
1091         priv_lock(priv);
1092         priv_socket_handle(priv);
1093         priv_unlock(priv);
1094 }
1095
1096 /**
1097  * Uninstall interrupt handler.
1098  *
1099  * @param priv
1100  *   Pointer to private structure.
1101  * @param dev
1102  *   Pointer to the rte_eth_dev structure.
1103  */
1104 void
1105 priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev)
1106 {
1107         if (dev->data->dev_conf.intr_conf.lsc ||
1108             dev->data->dev_conf.intr_conf.rmv)
1109                 rte_intr_callback_unregister(&priv->intr_handle,
1110                                              mlx5_dev_interrupt_handler, dev);
1111         if (priv->primary_socket)
1112                 rte_intr_callback_unregister(&priv->intr_handle_socket,
1113                                              mlx5_dev_handler_socket, dev);
1114         if (priv->pending_alarm) {
1115                 priv->pending_alarm = 0;
1116                 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev);
1117         }
1118         priv->intr_handle.fd = 0;
1119         priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1120         priv->intr_handle_socket.fd = 0;
1121         priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN;
1122 }
1123
1124 /**
1125  * Install interrupt handler.
1126  *
1127  * @param priv
1128  *   Pointer to private structure.
1129  * @param dev
1130  *   Pointer to the rte_eth_dev structure.
1131  */
1132 void
1133 priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev)
1134 {
1135         int rc, flags;
1136
1137         assert(priv->ctx->async_fd > 0);
1138         flags = fcntl(priv->ctx->async_fd, F_GETFL);
1139         rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1140         if (rc < 0) {
1141                 INFO("failed to change file descriptor async event queue");
1142                 dev->data->dev_conf.intr_conf.lsc = 0;
1143                 dev->data->dev_conf.intr_conf.rmv = 0;
1144         }
1145         if (dev->data->dev_conf.intr_conf.lsc ||
1146             dev->data->dev_conf.intr_conf.rmv) {
1147                 priv->intr_handle.fd = priv->ctx->async_fd;
1148                 priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
1149                 rte_intr_callback_register(&priv->intr_handle,
1150                                            mlx5_dev_interrupt_handler, dev);
1151         }
1152         rc = priv_socket_init(priv);
1153         if (!rc && priv->primary_socket) {
1154                 priv->intr_handle_socket.fd = priv->primary_socket;
1155                 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT;
1156                 rte_intr_callback_register(&priv->intr_handle_socket,
1157                                            mlx5_dev_handler_socket, dev);
1158         }
1159 }
1160
1161 /**
1162  * Change the link state (UP / DOWN).
1163  *
1164  * @param priv
1165  *   Pointer to private data structure.
1166  * @param up
1167  *   Nonzero for link up, otherwise link down.
1168  *
1169  * @return
1170  *   0 on success, errno value on failure.
1171  */
1172 static int
1173 priv_dev_set_link(struct priv *priv, int up)
1174 {
1175         return priv_set_flags(priv, ~IFF_UP, up ? IFF_UP : ~IFF_UP);
1176 }
1177
1178 /**
1179  * DPDK callback to bring the link DOWN.
1180  *
1181  * @param dev
1182  *   Pointer to Ethernet device structure.
1183  *
1184  * @return
1185  *   0 on success, errno value on failure.
1186  */
1187 int
1188 mlx5_set_link_down(struct rte_eth_dev *dev)
1189 {
1190         struct priv *priv = dev->data->dev_private;
1191         int err;
1192
1193         priv_lock(priv);
1194         err = priv_dev_set_link(priv, 0);
1195         priv_unlock(priv);
1196         return err;
1197 }
1198
1199 /**
1200  * DPDK callback to bring the link UP.
1201  *
1202  * @param dev
1203  *   Pointer to Ethernet device structure.
1204  *
1205  * @return
1206  *   0 on success, errno value on failure.
1207  */
1208 int
1209 mlx5_set_link_up(struct rte_eth_dev *dev)
1210 {
1211         struct priv *priv = dev->data->dev_private;
1212         int err;
1213
1214         priv_lock(priv);
1215         err = priv_dev_set_link(priv, 1);
1216         priv_unlock(priv);
1217         return err;
1218 }
1219
1220 /**
1221  * Configure the TX function to use.
1222  *
1223  * @param priv
1224  *   Pointer to private data structure.
1225  * @param dev
1226  *   Pointer to rte_eth_dev structure.
1227  *
1228  * @return
1229  *   Pointer to selected Tx burst function.
1230  */
1231 eth_tx_burst_t
1232 priv_select_tx_function(struct priv *priv, struct rte_eth_dev *dev)
1233 {
1234         eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst;
1235         struct mlx5_dev_config *config = &priv->config;
1236         uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
1237         int tso = !!(tx_offloads & (DEV_TX_OFFLOAD_TCP_TSO |
1238                                     DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
1239                                     DEV_TX_OFFLOAD_GRE_TNL_TSO));
1240         int vlan_insert = !!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT);
1241
1242         assert(priv != NULL);
1243         /* Select appropriate TX function. */
1244         if (vlan_insert || tso)
1245                 return tx_pkt_burst;
1246         if (config->mps == MLX5_MPW_ENHANCED) {
1247                 if (priv_check_vec_tx_support(priv, dev) > 0) {
1248                         if (priv_check_raw_vec_tx_support(priv, dev) > 0)
1249                                 tx_pkt_burst = mlx5_tx_burst_raw_vec;
1250                         else
1251                                 tx_pkt_burst = mlx5_tx_burst_vec;
1252                         DEBUG("selected Enhanced MPW TX vectorized function");
1253                 } else {
1254                         tx_pkt_burst = mlx5_tx_burst_empw;
1255                         DEBUG("selected Enhanced MPW TX function");
1256                 }
1257         } else if (config->mps && (config->txq_inline > 0)) {
1258                 tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1259                 DEBUG("selected MPW inline TX function");
1260         } else if (config->mps) {
1261                 tx_pkt_burst = mlx5_tx_burst_mpw;
1262                 DEBUG("selected MPW TX function");
1263         }
1264         return tx_pkt_burst;
1265 }
1266
1267 /**
1268  * Configure the RX function to use.
1269  *
1270  * @param priv
1271  *   Pointer to private data structure.
1272  * @param dev
1273  *   Pointer to rte_eth_dev structure.
1274  *
1275  * @return
1276  *   Pointer to selected Rx burst function.
1277  */
1278 eth_rx_burst_t
1279 priv_select_rx_function(struct priv *priv, __rte_unused struct rte_eth_dev *dev)
1280 {
1281         eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
1282
1283         assert(priv != NULL);
1284         if (priv_check_vec_rx_support(priv) > 0) {
1285                 rx_pkt_burst = mlx5_rx_burst_vec;
1286                 DEBUG("selected RX vectorized function");
1287         }
1288         return rx_pkt_burst;
1289 }
1290
1291 /**
1292  * Check if mlx5 device was removed.
1293  *
1294  * @param dev
1295  *   Pointer to Ethernet device structure.
1296  *
1297  * @return
1298  *   1 when device is removed, otherwise 0.
1299  */
1300 int
1301 mlx5_is_removed(struct rte_eth_dev *dev)
1302 {
1303         struct ibv_device_attr device_attr;
1304         struct priv *priv = dev->data->dev_private;
1305
1306         if (mlx5_glue->query_device(priv->ctx, &device_attr) == EIO)
1307                 return 1;
1308         return 0;
1309 }