drivers/net/mlx5/mlx5_ethdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2015 6WIND S.A.
   3  * Copyright 2015 Mellanox Technologies, Ltd
   4  */
   5
   6 #include <stddef.h>
   7 #include <assert.h>
   8 #include <inttypes.h>
   9 #include <unistd.h>
  10 #include <stdint.h>
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include <stdlib.h>
  14 #include <errno.h>
  15 #include <dirent.h>
  16 #include <net/if.h>
  17 #include <sys/ioctl.h>
  18 #include <sys/socket.h>
  19 #include <netinet/in.h>
  20 #include <linux/ethtool.h>
  21 #include <linux/sockios.h>
  22 #include <fcntl.h>
  23 #include <stdalign.h>
  24 #include <sys/un.h>
  25 #include <time.h>
  26
  27 #include <rte_atomic.h>
  28 #include <rte_ethdev_driver.h>
  29 #include <rte_bus_pci.h>
  30 #include <rte_mbuf.h>
  31 #include <rte_common.h>
  32 #include <rte_interrupts.h>
  33 #include <rte_malloc.h>
  34 #include <rte_string_fns.h>
  35 #include <rte_rwlock.h>
  36
  37 #include "mlx5.h"
  38 #include "mlx5_glue.h"
  39 #include "mlx5_rxtx.h"
  40 #include "mlx5_utils.h"
  41
  42 /* Supported speed values found in /usr/include/linux/ethtool.h */
  43 #ifndef HAVE_SUPPORTED_40000baseKR4_Full
  44 #define SUPPORTED_40000baseKR4_Full (1 << 23)
  45 #endif
  46 #ifndef HAVE_SUPPORTED_40000baseCR4_Full
  47 #define SUPPORTED_40000baseCR4_Full (1 << 24)
  48 #endif
  49 #ifndef HAVE_SUPPORTED_40000baseSR4_Full
  50 #define SUPPORTED_40000baseSR4_Full (1 << 25)
  51 #endif
  52 #ifndef HAVE_SUPPORTED_40000baseLR4_Full
  53 #define SUPPORTED_40000baseLR4_Full (1 << 26)
  54 #endif
  55 #ifndef HAVE_SUPPORTED_56000baseKR4_Full
  56 #define SUPPORTED_56000baseKR4_Full (1 << 27)
  57 #endif
  58 #ifndef HAVE_SUPPORTED_56000baseCR4_Full
  59 #define SUPPORTED_56000baseCR4_Full (1 << 28)
  60 #endif
  61 #ifndef HAVE_SUPPORTED_56000baseSR4_Full
  62 #define SUPPORTED_56000baseSR4_Full (1 << 29)
  63 #endif
  64 #ifndef HAVE_SUPPORTED_56000baseLR4_Full
  65 #define SUPPORTED_56000baseLR4_Full (1 << 30)
  66 #endif
  67
  68 /* Add defines in case the running kernel is not the same as user headers. */
  69 #ifndef ETHTOOL_GLINKSETTINGS
  70 struct ethtool_link_settings {
  71         uint32_t cmd;
  72         uint32_t speed;
  73         uint8_t duplex;
  74         uint8_t port;
  75         uint8_t phy_address;
  76         uint8_t autoneg;
  77         uint8_t mdio_support;
  78         uint8_t eth_to_mdix;
  79         uint8_t eth_tp_mdix_ctrl;
  80         int8_t link_mode_masks_nwords;
  81         uint32_t reserved[8];
  82         uint32_t link_mode_masks[];
  83 };
  84
  85 #define ETHTOOL_GLINKSETTINGS 0x0000004c
  86 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5
  87 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6
  88 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17
  89 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18
  90 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19
  91 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20
  92 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21
  93 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22
  94 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23
  95 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24
  96 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25
  97 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26
  98 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27
  99 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28
 100 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29
 101 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30
 102 #endif
 103 #ifndef HAVE_ETHTOOL_LINK_MODE_25G
 104 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31
 105 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32
 106 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33
 107 #endif
 108 #ifndef HAVE_ETHTOOL_LINK_MODE_50G
 109 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34
 110 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35
 111 #endif
 112 #ifndef HAVE_ETHTOOL_LINK_MODE_100G
 113 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36
 114 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37
 115 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38
 116 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39
 117 #endif
 118
 119 /**
 120  * Get master interface name from private structure.
 121  *
 122  * @param[in] dev
 123  *   Pointer to Ethernet device.
 124  * @param[out] ifname
 125  *   Interface name output buffer.
 126  *
 127  * @return
 128  *   0 on success, a negative errno value otherwise and rte_errno is set.
 129  */
 130 int
 131 mlx5_get_master_ifname(const char *ibdev_path, char (*ifname)[IF_NAMESIZE])
 132 {
 133         DIR *dir;
 134         struct dirent *dent;
 135         unsigned int dev_type = 0;
 136         unsigned int dev_port_prev = ~0u;
 137         char match[IF_NAMESIZE] = "";
 138
 139         assert(ibdev_path);
 140         {
 141                 MKSTR(path, "%s/device/net", ibdev_path);
 142
 143                 dir = opendir(path);
 144                 if (dir == NULL) {
 145                         rte_errno = errno;
 146                         return -rte_errno;
 147                 }
 148         }
 149         while ((dent = readdir(dir)) != NULL) {
 150                 char *name = dent->d_name;
 151                 FILE *file;
 152                 unsigned int dev_port;
 153                 int r;
 154
 155                 if ((name[0] == '.') &&
 156                     ((name[1] == '\0') ||
 157                      ((name[1] == '.') && (name[2] == '\0'))))
 158                         continue;
 159
 160                 MKSTR(path, "%s/device/net/%s/%s",
 161                       ibdev_path, name,
 162                       (dev_type ? "dev_id" : "dev_port"));
 163
 164                 file = fopen(path, "rb");
 165                 if (file == NULL) {
 166                         if (errno != ENOENT)
 167                                 continue;
 168                         /*
 169                          * Switch to dev_id when dev_port does not exist as
 170                          * is the case with Linux kernel versions < 3.15.
 171                          */
 172 try_dev_id:
 173                         match[0] = '\0';
 174                         if (dev_type)
 175                                 break;
 176                         dev_type = 1;
 177                         dev_port_prev = ~0u;
 178                         rewinddir(dir);
 179                         continue;
 180                 }
 181                 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
 182                 fclose(file);
 183                 if (r != 1)
 184                         continue;
 185                 /*
 186                  * Switch to dev_id when dev_port returns the same value for
 187                  * all ports. May happen when using a MOFED release older than
 188                  * 3.0 with a Linux kernel >= 3.15.
 189                  */
 190                 if (dev_port == dev_port_prev)
 191                         goto try_dev_id;
 192                 dev_port_prev = dev_port;
 193                 if (dev_port == 0)
 194                         strlcpy(match, name, sizeof(match));
 195         }
 196         closedir(dir);
 197         if (match[0] == '\0') {
 198                 rte_errno = ENOENT;
 199                 return -rte_errno;
 200         }
 201         strncpy(*ifname, match, sizeof(*ifname));
 202         return 0;
 203 }
 204
 205 /**
 206  * Get interface name from private structure.
 207  *
 208  * This is a port representor-aware version of mlx5_get_master_ifname().
 209  *
 210  * @param[in] dev
 211  *   Pointer to Ethernet device.
 212  * @param[out] ifname
 213  *   Interface name output buffer.
 214  *
 215  * @return
 216  *   0 on success, a negative errno value otherwise and rte_errno is set.
 217  */
 218 int
 219 mlx5_get_ifname(const struct rte_eth_dev *dev, char (*ifname)[IF_NAMESIZE])
 220 {
 221         struct mlx5_priv *priv = dev->data->dev_private;
 222         unsigned int ifindex;
 223
 224         assert(priv);
 225         assert(priv->sh);
 226         ifindex = priv->nl_socket_rdma >= 0 ?
 227                   mlx5_nl_ifindex(priv->nl_socket_rdma,
 228                                   priv->sh->ibdev_name,
 229                                   priv->ibv_port) : 0;
 230         if (!ifindex) {
 231                 if (!priv->representor)
 232                         return mlx5_get_master_ifname(priv->sh->ibdev_path,
 233                                                       ifname);
 234                 rte_errno = ENXIO;
 235                 return -rte_errno;
 236         }
 237         if (if_indextoname(ifindex, &(*ifname)[0]))
 238                 return 0;
 239         rte_errno = errno;
 240         return -rte_errno;
 241 }
 242
 243 /**
 244  * Get the interface index from device name.
 245  *
 246  * @param[in] dev
 247  *   Pointer to Ethernet device.
 248  *
 249  * @return
 250  *   Nonzero interface index on success, zero otherwise and rte_errno is set.
 251  */
 252 unsigned int
 253 mlx5_ifindex(const struct rte_eth_dev *dev)
 254 {
 255         char ifname[IF_NAMESIZE];
 256         unsigned int ifindex;
 257
 258         if (mlx5_get_ifname(dev, &ifname))
 259                 return 0;
 260         ifindex = if_nametoindex(ifname);
 261         if (!ifindex)
 262                 rte_errno = errno;
 263         return ifindex;
 264 }
 265
 266 /**
 267  * Perform ifreq ioctl() on associated Ethernet device.
 268  *
 269  * @param[in] dev
 270  *   Pointer to Ethernet device.
 271  * @param req
 272  *   Request number to pass to ioctl().
 273  * @param[out] ifr
 274  *   Interface request structure output buffer.
 275  *
 276  * @return
 277  *   0 on success, a negative errno value otherwise and rte_errno is set.
 278  */
 279 int
 280 mlx5_ifreq(const struct rte_eth_dev *dev, int req, struct ifreq *ifr)
 281 {
 282         int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
 283         int ret = 0;
 284
 285         if (sock == -1) {
 286                 rte_errno = errno;
 287                 return -rte_errno;
 288         }
 289         ret = mlx5_get_ifname(dev, &ifr->ifr_name);
 290         if (ret)
 291                 goto error;
 292         ret = ioctl(sock, req, ifr);
 293         if (ret == -1) {
 294                 rte_errno = errno;
 295                 goto error;
 296         }
 297         close(sock);
 298         return 0;
 299 error:
 300         close(sock);
 301         return -rte_errno;
 302 }
 303
 304 /**
 305  * Get device MTU.
 306  *
 307  * @param dev
 308  *   Pointer to Ethernet device.
 309  * @param[out] mtu
 310  *   MTU value output buffer.
 311  *
 312  * @return
 313  *   0 on success, a negative errno value otherwise and rte_errno is set.
 314  */
 315 int
 316 mlx5_get_mtu(struct rte_eth_dev *dev, uint16_t *mtu)
 317 {
 318         struct ifreq request;
 319         int ret = mlx5_ifreq(dev, SIOCGIFMTU, &request);
 320
 321         if (ret)
 322                 return ret;
 323         *mtu = request.ifr_mtu;
 324         return 0;
 325 }
 326
 327 /**
 328  * Set device MTU.
 329  *
 330  * @param dev
 331  *   Pointer to Ethernet device.
 332  * @param mtu
 333  *   MTU value to set.
 334  *
 335  * @return
 336  *   0 on success, a negative errno value otherwise and rte_errno is set.
 337  */
 338 static int
 339 mlx5_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 340 {
 341         struct ifreq request = { .ifr_mtu = mtu, };
 342
 343         return mlx5_ifreq(dev, SIOCSIFMTU, &request);
 344 }
 345
 346 /**
 347  * Set device flags.
 348  *
 349  * @param dev
 350  *   Pointer to Ethernet device.
 351  * @param keep
 352  *   Bitmask for flags that must remain untouched.
 353  * @param flags
 354  *   Bitmask for flags to modify.
 355  *
 356  * @return
 357  *   0 on success, a negative errno value otherwise and rte_errno is set.
 358  */
 359 int
 360 mlx5_set_flags(struct rte_eth_dev *dev, unsigned int keep, unsigned int flags)
 361 {
 362         struct ifreq request;
 363         int ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &request);
 364
 365         if (ret)
 366                 return ret;
 367         request.ifr_flags &= keep;
 368         request.ifr_flags |= flags & ~keep;
 369         return mlx5_ifreq(dev, SIOCSIFFLAGS, &request);
 370 }
 371
 372 /**
 373  * DPDK callback for Ethernet device configuration.
 374  *
 375  * @param dev
 376  *   Pointer to Ethernet device structure.
 377  *
 378  * @return
 379  *   0 on success, a negative errno value otherwise and rte_errno is set.
 380  */
 381 int
 382 mlx5_dev_configure(struct rte_eth_dev *dev)
 383 {
 384         struct mlx5_priv *priv = dev->data->dev_private;
 385         unsigned int rxqs_n = dev->data->nb_rx_queues;
 386         unsigned int txqs_n = dev->data->nb_tx_queues;
 387         unsigned int i;
 388         unsigned int j;
 389         unsigned int reta_idx_n;
 390         const uint8_t use_app_rss_key =
 391                 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
 392         int ret = 0;
 393
 394         if (use_app_rss_key &&
 395             (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
 396              MLX5_RSS_HASH_KEY_LEN)) {
 397                 DRV_LOG(ERR, "port %u RSS key len must be %s Bytes long",
 398                         dev->data->port_id, RTE_STR(MLX5_RSS_HASH_KEY_LEN));
 399                 rte_errno = EINVAL;
 400                 return -rte_errno;
 401         }
 402         priv->rss_conf.rss_key =
 403                 rte_realloc(priv->rss_conf.rss_key,
 404                             MLX5_RSS_HASH_KEY_LEN, 0);
 405         if (!priv->rss_conf.rss_key) {
 406                 DRV_LOG(ERR, "port %u cannot allocate RSS hash key memory (%u)",
 407                         dev->data->port_id, rxqs_n);
 408                 rte_errno = ENOMEM;
 409                 return -rte_errno;
 410         }
 411         memcpy(priv->rss_conf.rss_key,
 412                use_app_rss_key ?
 413                dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
 414                rss_hash_default_key,
 415                MLX5_RSS_HASH_KEY_LEN);
 416         priv->rss_conf.rss_key_len = MLX5_RSS_HASH_KEY_LEN;
 417         priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
 418         priv->rxqs = (void *)dev->data->rx_queues;
 419         priv->txqs = (void *)dev->data->tx_queues;
 420         if (txqs_n != priv->txqs_n) {
 421                 DRV_LOG(INFO, "port %u Tx queues number update: %u -> %u",
 422                         dev->data->port_id, priv->txqs_n, txqs_n);
 423                 priv->txqs_n = txqs_n;
 424         }
 425         if (rxqs_n > priv->config.ind_table_max_size) {
 426                 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)",
 427                         dev->data->port_id, rxqs_n);
 428                 rte_errno = EINVAL;
 429                 return -rte_errno;
 430         }
 431         if (rxqs_n != priv->rxqs_n) {
 432                 DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u",
 433                         dev->data->port_id, priv->rxqs_n, rxqs_n);
 434                 priv->rxqs_n = rxqs_n;
 435                 /*
 436                  * If the requested number of RX queues is not a power of two,
 437                  * use the maximum indirection table size for better balancing.
 438                  * The result is always rounded to the next power of two.
 439                  */
 440                 reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ?
 441                                              priv->config.ind_table_max_size :
 442                                              rxqs_n));
 443                 ret = mlx5_rss_reta_index_resize(dev, reta_idx_n);
 444                 if (ret)
 445                         return ret;
 446                 /*
 447                  * When the number of RX queues is not a power of two,
 448                  * the remaining table entries are padded with reused WQs
 449                  * and hashes are not spread uniformly.
 450                  */
 451                 for (i = 0, j = 0; (i != reta_idx_n); ++i) {
 452                         (*priv->reta_idx)[i] = j;
 453                         if (++j == rxqs_n)
 454                                 j = 0;
 455                 }
 456         }
 457         ret = mlx5_proc_priv_init(dev);
 458         if (ret)
 459                 return ret;
 460         return 0;
 461 }
 462
 463 /**
 464  * Sets default tuning parameters.
 465  *
 466  * @param dev
 467  *   Pointer to Ethernet device.
 468  * @param[out] info
 469  *   Info structure output buffer.
 470  */
 471 static void
 472 mlx5_set_default_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 473 {
 474         struct mlx5_priv *priv = dev->data->dev_private;
 475
 476         /* Minimum CPU utilization. */
 477         info->default_rxportconf.ring_size = 256;
 478         info->default_txportconf.ring_size = 256;
 479         info->default_rxportconf.burst_size = 64;
 480         info->default_txportconf.burst_size = 64;
 481         if (priv->link_speed_capa & ETH_LINK_SPEED_100G) {
 482                 info->default_rxportconf.nb_queues = 16;
 483                 info->default_txportconf.nb_queues = 16;
 484                 if (dev->data->nb_rx_queues > 2 ||
 485                     dev->data->nb_tx_queues > 2) {
 486                         /* Max Throughput. */
 487                         info->default_rxportconf.ring_size = 2048;
 488                         info->default_txportconf.ring_size = 2048;
 489                 }
 490         } else {
 491                 info->default_rxportconf.nb_queues = 8;
 492                 info->default_txportconf.nb_queues = 8;
 493                 if (dev->data->nb_rx_queues > 2 ||
 494                     dev->data->nb_tx_queues > 2) {
 495                         /* Max Throughput. */
 496                         info->default_rxportconf.ring_size = 4096;
 497                         info->default_txportconf.ring_size = 4096;
 498                 }
 499         }
 500 }
 501
 502 /**
 503  * DPDK callback to get information about the device.
 504  *
 505  * @param dev
 506  *   Pointer to Ethernet device structure.
 507  * @param[out] info
 508  *   Info structure output buffer.
 509  */
 510 void
 511 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 512 {
 513         struct mlx5_priv *priv = dev->data->dev_private;
 514         struct mlx5_dev_config *config = &priv->config;
 515         unsigned int max;
 516         char ifname[IF_NAMESIZE];
 517
 518         /* FIXME: we should ask the device for these values. */
 519         info->min_rx_bufsize = 32;
 520         info->max_rx_pktlen = 65536;
 521         /*
 522          * Since we need one CQ per QP, the limit is the minimum number
 523          * between the two values.
 524          */
 525         max = RTE_MIN(priv->sh->device_attr.orig_attr.max_cq,
 526                       priv->sh->device_attr.orig_attr.max_qp);
 527         /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
 528         if (max >= 65535)
 529                 max = 65535;
 530         info->max_rx_queues = max;
 531         info->max_tx_queues = max;
 532         info->max_mac_addrs = MLX5_MAX_UC_MAC_ADDRESSES;
 533         info->rx_queue_offload_capa = mlx5_get_rx_queue_offloads(dev);
 534         info->rx_offload_capa = (mlx5_get_rx_port_offloads() |
 535                                  info->rx_queue_offload_capa);
 536         info->tx_offload_capa = mlx5_get_tx_port_offloads(dev);
 537         if (mlx5_get_ifname(dev, &ifname) == 0)
 538                 info->if_index = if_nametoindex(ifname);
 539         info->reta_size = priv->reta_idx_n ?
 540                 priv->reta_idx_n : config->ind_table_max_size;
 541         info->hash_key_size = MLX5_RSS_HASH_KEY_LEN;
 542         info->speed_capa = priv->link_speed_capa;
 543         info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK;
 544         mlx5_set_default_params(dev, info);
 545         info->switch_info.name = dev->data->name;
 546         info->switch_info.domain_id = priv->domain_id;
 547         info->switch_info.port_id = priv->representor_id;
 548         if (priv->representor) {
 549                 unsigned int i = mlx5_dev_to_port_id(dev->device, NULL, 0);
 550                 uint16_t port_id[i];
 551
 552                 i = RTE_MIN(mlx5_dev_to_port_id(dev->device, port_id, i), i);
 553                 while (i--) {
 554                         struct mlx5_priv *opriv =
 555                                 rte_eth_devices[port_id[i]].data->dev_private;
 556
 557                         if (!opriv ||
 558                             opriv->representor ||
 559                             opriv->domain_id != priv->domain_id)
 560                                 continue;
 561                         /*
 562                          * Override switch name with that of the master
 563                          * device.
 564                          */
 565                         info->switch_info.name = opriv->dev_data->name;
 566                         break;
 567                 }
 568         }
 569 }
 570
 571 /**
 572  * Get firmware version of a device.
 573  *
 574  * @param dev
 575  *   Ethernet device port.
 576  * @param fw_ver
 577  *   String output allocated by caller.
 578  * @param fw_size
 579  *   Size of the output string, including terminating null byte.
 580  *
 581  * @return
 582  *   0 on success, or the size of the non truncated string if too big.
 583  */
 584 int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size)
 585 {
 586         struct mlx5_priv *priv = dev->data->dev_private;
 587         struct ibv_device_attr *attr = &priv->sh->device_attr.orig_attr;
 588         size_t size = strnlen(attr->fw_ver, sizeof(attr->fw_ver)) + 1;
 589
 590         if (fw_size < size)
 591                 return size;
 592         if (fw_ver != NULL)
 593                 strlcpy(fw_ver, attr->fw_ver, fw_size);
 594         return 0;
 595 }
 596
 597 /**
 598  * Get supported packet types.
 599  *
 600  * @param dev
 601  *   Pointer to Ethernet device structure.
 602  *
 603  * @return
 604  *   A pointer to the supported Packet types array.
 605  */
 606 const uint32_t *
 607 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 608 {
 609         static const uint32_t ptypes[] = {
 610                 /* refers to rxq_cq_to_pkt_type() */
 611                 RTE_PTYPE_L2_ETHER,
 612                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 613                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 614                 RTE_PTYPE_L4_NONFRAG,
 615                 RTE_PTYPE_L4_FRAG,
 616                 RTE_PTYPE_L4_TCP,
 617                 RTE_PTYPE_L4_UDP,
 618                 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
 619                 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
 620                 RTE_PTYPE_INNER_L4_NONFRAG,
 621                 RTE_PTYPE_INNER_L4_FRAG,
 622                 RTE_PTYPE_INNER_L4_TCP,
 623                 RTE_PTYPE_INNER_L4_UDP,
 624                 RTE_PTYPE_UNKNOWN
 625         };
 626
 627         if (dev->rx_pkt_burst == mlx5_rx_burst ||
 628             dev->rx_pkt_burst == mlx5_rx_burst_mprq ||
 629             dev->rx_pkt_burst == mlx5_rx_burst_vec)
 630                 return ptypes;
 631         return NULL;
 632 }
 633
 634 /**
 635  * Retrieve the master device for representor in the same switch domain.
 636  *
 637  * @param dev
 638  *   Pointer to representor Ethernet device structure.
 639  *
 640  * @return
 641  *   Master device structure  on success, NULL otherwise.
 642  */
 643
 644 static struct rte_eth_dev *
 645 mlx5_find_master_dev(struct rte_eth_dev *dev)
 646 {
 647         struct mlx5_priv *priv;
 648         uint16_t port_id;
 649         uint16_t domain_id;
 650
 651         priv = dev->data->dev_private;
 652         domain_id = priv->domain_id;
 653         assert(priv->representor);
 654         RTE_ETH_FOREACH_DEV_OF(port_id, dev->device) {
 655                 priv = rte_eth_devices[port_id].data->dev_private;
 656                 if (priv &&
 657                     priv->master &&
 658                     priv->domain_id == domain_id)
 659                         return &rte_eth_devices[port_id];
 660         }
 661         return NULL;
 662 }
 663
 664 /**
 665  * DPDK callback to retrieve physical link information.
 666  *
 667  * @param dev
 668  *   Pointer to Ethernet device structure.
 669  * @param[out] link
 670  *   Storage for current link status.
 671  *
 672  * @return
 673  *   0 on success, a negative errno value otherwise and rte_errno is set.
 674  */
 675 static int
 676 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev,
 677                                struct rte_eth_link *link)
 678 {
 679         struct mlx5_priv *priv = dev->data->dev_private;
 680         struct ethtool_cmd edata = {
 681                 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
 682         };
 683         struct ifreq ifr;
 684         struct rte_eth_link dev_link;
 685         int link_speed = 0;
 686         int ret;
 687
 688         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
 689         if (ret) {
 690                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
 691                         dev->data->port_id, strerror(rte_errno));
 692                 return ret;
 693         }
 694         dev_link = (struct rte_eth_link) {
 695                 .link_status = ((ifr.ifr_flags & IFF_UP) &&
 696                                 (ifr.ifr_flags & IFF_RUNNING)),
 697         };
 698         ifr = (struct ifreq) {
 699                 .ifr_data = (void *)&edata,
 700         };
 701         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 702         if (ret) {
 703                 if (ret == -ENOTSUP && priv->representor) {
 704                         struct rte_eth_dev *master;
 705
 706                         /*
 707                          * For representors we can try to inherit link
 708                          * settings from the master device. Actually
 709                          * link settings do not make a lot of sense
 710                          * for representors due to missing physical
 711                          * link. The old kernel drivers supported
 712                          * emulated settings query for representors,
 713                          * the new ones do not, so we have to add
 714                          * this code for compatibility issues.
 715                          */
 716                         master = mlx5_find_master_dev(dev);
 717                         if (master) {
 718                                 ifr = (struct ifreq) {
 719                                         .ifr_data = (void *)&edata,
 720                                 };
 721                                 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr);
 722                         }
 723                 }
 724                 if (ret) {
 725                         DRV_LOG(WARNING,
 726                                 "port %u ioctl(SIOCETHTOOL,"
 727                                 " ETHTOOL_GSET) failed: %s",
 728                                 dev->data->port_id, strerror(rte_errno));
 729                         return ret;
 730                 }
 731         }
 732         link_speed = ethtool_cmd_speed(&edata);
 733         if (link_speed == -1)
 734                 dev_link.link_speed = ETH_SPEED_NUM_NONE;
 735         else
 736                 dev_link.link_speed = link_speed;
 737         priv->link_speed_capa = 0;
 738         if (edata.supported & SUPPORTED_Autoneg)
 739                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 740         if (edata.supported & (SUPPORTED_1000baseT_Full |
 741                                SUPPORTED_1000baseKX_Full))
 742                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 743         if (edata.supported & SUPPORTED_10000baseKR_Full)
 744                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 745         if (edata.supported & (SUPPORTED_40000baseKR4_Full |
 746                                SUPPORTED_40000baseCR4_Full |
 747                                SUPPORTED_40000baseSR4_Full |
 748                                SUPPORTED_40000baseLR4_Full))
 749                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 750         dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
 751                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 752         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 753                         ETH_LINK_SPEED_FIXED);
 754         if (((dev_link.link_speed && !dev_link.link_status) ||
 755              (!dev_link.link_speed && dev_link.link_status))) {
 756                 rte_errno = EAGAIN;
 757                 return -rte_errno;
 758         }
 759         *link = dev_link;
 760         return 0;
 761 }
 762
 763 /**
 764  * Retrieve physical link information (unlocked version using new ioctl).
 765  *
 766  * @param dev
 767  *   Pointer to Ethernet device structure.
 768  * @param[out] link
 769  *   Storage for current link status.
 770  *
 771  * @return
 772  *   0 on success, a negative errno value otherwise and rte_errno is set.
 773  */
 774 static int
 775 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev,
 776                              struct rte_eth_link *link)
 777
 778 {
 779         struct mlx5_priv *priv = dev->data->dev_private;
 780         struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
 781         struct ifreq ifr;
 782         struct rte_eth_link dev_link;
 783         struct rte_eth_dev *master = NULL;
 784         uint64_t sc;
 785         int ret;
 786
 787         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
 788         if (ret) {
 789                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
 790                         dev->data->port_id, strerror(rte_errno));
 791                 return ret;
 792         }
 793         dev_link = (struct rte_eth_link) {
 794                 .link_status = ((ifr.ifr_flags & IFF_UP) &&
 795                                 (ifr.ifr_flags & IFF_RUNNING)),
 796         };
 797         ifr = (struct ifreq) {
 798                 .ifr_data = (void *)&gcmd,
 799         };
 800         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 801         if (ret) {
 802                 if (ret == -ENOTSUP && priv->representor) {
 803                         /*
 804                          * For representors we can try to inherit link
 805                          * settings from the master device. Actually
 806                          * link settings do not make a lot of sense
 807                          * for representors due to missing physical
 808                          * link. The old kernel drivers supported
 809                          * emulated settings query for representors,
 810                          * the new ones do not, so we have to add
 811                          * this code for compatibility issues.
 812                          */
 813                         master = mlx5_find_master_dev(dev);
 814                         if (master) {
 815                                 ifr = (struct ifreq) {
 816                                         .ifr_data = (void *)&gcmd,
 817                                 };
 818                                 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr);
 819                         }
 820                 }
 821                 if (ret) {
 822                         DRV_LOG(DEBUG,
 823                                 "port %u ioctl(SIOCETHTOOL,"
 824                                 " ETHTOOL_GLINKSETTINGS) failed: %s",
 825                                 dev->data->port_id, strerror(rte_errno));
 826                         return ret;
 827                 }
 828
 829         }
 830         gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
 831
 832         alignas(struct ethtool_link_settings)
 833         uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
 834                      sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
 835         struct ethtool_link_settings *ecmd = (void *)data;
 836
 837         *ecmd = gcmd;
 838         ifr.ifr_data = (void *)ecmd;
 839         ret = mlx5_ifreq(master ? master : dev, SIOCETHTOOL, &ifr);
 840         if (ret) {
 841                 DRV_LOG(DEBUG,
 842                         "port %u ioctl(SIOCETHTOOL,"
 843                         "ETHTOOL_GLINKSETTINGS) failed: %s",
 844                         dev->data->port_id, strerror(rte_errno));
 845                 return ret;
 846         }
 847         dev_link.link_speed = ecmd->speed;
 848         sc = ecmd->link_mode_masks[0] |
 849                 ((uint64_t)ecmd->link_mode_masks[1] << 32);
 850         priv->link_speed_capa = 0;
 851         if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
 852                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 853         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
 854                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
 855                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 856         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
 857                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
 858                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
 859                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 860         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
 861                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
 862                 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
 863         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
 864                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
 865                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
 866                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
 867                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 868         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
 869                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
 870                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
 871                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
 872                 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
 873         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
 874                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
 875                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
 876                 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
 877         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
 878                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
 879                 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
 880         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
 881                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
 882                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
 883                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
 884                 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
 885         dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
 886                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 887         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 888                                   ETH_LINK_SPEED_FIXED);
 889         if (((dev_link.link_speed && !dev_link.link_status) ||
 890              (!dev_link.link_speed && dev_link.link_status))) {
 891                 rte_errno = EAGAIN;
 892                 return -rte_errno;
 893         }
 894         *link = dev_link;
 895         return 0;
 896 }
 897
 898 /**
 899  * DPDK callback to retrieve physical link information.
 900  *
 901  * @param dev
 902  *   Pointer to Ethernet device structure.
 903  * @param wait_to_complete
 904  *   Wait for request completion.
 905  *
 906  * @return
 907  *   0 if link status was not updated, positive if it was, a negative errno
 908  *   value otherwise and rte_errno is set.
 909  */
 910 int
 911 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 912 {
 913         int ret;
 914         struct rte_eth_link dev_link;
 915         time_t start_time = time(NULL);
 916
 917         do {
 918                 ret = mlx5_link_update_unlocked_gs(dev, &dev_link);
 919                 if (ret)
 920                         ret = mlx5_link_update_unlocked_gset(dev, &dev_link);
 921                 if (ret == 0)
 922                         break;
 923                 /* Handle wait to complete situation. */
 924                 if (wait_to_complete && ret == -EAGAIN) {
 925                         if (abs((int)difftime(time(NULL), start_time)) <
 926                             MLX5_LINK_STATUS_TIMEOUT) {
 927                                 usleep(0);
 928                                 continue;
 929                         } else {
 930                                 rte_errno = EBUSY;
 931                                 return -rte_errno;
 932                         }
 933                 } else if (ret < 0) {
 934                         return ret;
 935                 }
 936         } while (wait_to_complete);
 937         ret = !!memcmp(&dev->data->dev_link, &dev_link,
 938                        sizeof(struct rte_eth_link));
 939         dev->data->dev_link = dev_link;
 940         return ret;
 941 }
 942
 943 /**
 944  * DPDK callback to change the MTU.
 945  *
 946  * @param dev
 947  *   Pointer to Ethernet device structure.
 948  * @param in_mtu
 949  *   New MTU.
 950  *
 951  * @return
 952  *   0 on success, a negative errno value otherwise and rte_errno is set.
 953  */
 954 int
 955 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 956 {
 957         struct mlx5_priv *priv = dev->data->dev_private;
 958         uint16_t kern_mtu = 0;
 959         int ret;
 960
 961         ret = mlx5_get_mtu(dev, &kern_mtu);
 962         if (ret)
 963                 return ret;
 964         /* Set kernel interface MTU first. */
 965         ret = mlx5_set_mtu(dev, mtu);
 966         if (ret)
 967                 return ret;
 968         ret = mlx5_get_mtu(dev, &kern_mtu);
 969         if (ret)
 970                 return ret;
 971         if (kern_mtu == mtu) {
 972                 priv->mtu = mtu;
 973                 DRV_LOG(DEBUG, "port %u adapter MTU set to %u",
 974                         dev->data->port_id, mtu);
 975                 return 0;
 976         }
 977         rte_errno = EAGAIN;
 978         return -rte_errno;
 979 }
 980
 981 /**
 982  * DPDK callback to get flow control status.
 983  *
 984  * @param dev
 985  *   Pointer to Ethernet device structure.
 986  * @param[out] fc_conf
 987  *   Flow control output buffer.
 988  *
 989  * @return
 990  *   0 on success, a negative errno value otherwise and rte_errno is set.
 991  */
 992 int
 993 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 994 {
 995         struct ifreq ifr;
 996         struct ethtool_pauseparam ethpause = {
 997                 .cmd = ETHTOOL_GPAUSEPARAM
 998         };
 999         int ret;
1000
1001         ifr.ifr_data = (void *)&ethpause;
1002         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
1003         if (ret) {
1004                 DRV_LOG(WARNING,
1005                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM) failed:"
1006                         " %s",
1007                         dev->data->port_id, strerror(rte_errno));
1008                 return ret;
1009         }
1010         fc_conf->autoneg = ethpause.autoneg;
1011         if (ethpause.rx_pause && ethpause.tx_pause)
1012                 fc_conf->mode = RTE_FC_FULL;
1013         else if (ethpause.rx_pause)
1014                 fc_conf->mode = RTE_FC_RX_PAUSE;
1015         else if (ethpause.tx_pause)
1016                 fc_conf->mode = RTE_FC_TX_PAUSE;
1017         else
1018                 fc_conf->mode = RTE_FC_NONE;
1019         return 0;
1020 }
1021
1022 /**
1023  * DPDK callback to modify flow control parameters.
1024  *
1025  * @param dev
1026  *   Pointer to Ethernet device structure.
1027  * @param[in] fc_conf
1028  *   Flow control parameters.
1029  *
1030  * @return
1031  *   0 on success, a negative errno value otherwise and rte_errno is set.
1032  */
1033 int
1034 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1035 {
1036         struct ifreq ifr;
1037         struct ethtool_pauseparam ethpause = {
1038                 .cmd = ETHTOOL_SPAUSEPARAM
1039         };
1040         int ret;
1041
1042         ifr.ifr_data = (void *)&ethpause;
1043         ethpause.autoneg = fc_conf->autoneg;
1044         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1045             (fc_conf->mode & RTE_FC_RX_PAUSE))
1046                 ethpause.rx_pause = 1;
1047         else
1048                 ethpause.rx_pause = 0;
1049
1050         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1051             (fc_conf->mode & RTE_FC_TX_PAUSE))
1052                 ethpause.tx_pause = 1;
1053         else
1054                 ethpause.tx_pause = 0;
1055         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
1056         if (ret) {
1057                 DRV_LOG(WARNING,
1058                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
1059                         " failed: %s",
1060                         dev->data->port_id, strerror(rte_errno));
1061                 return ret;
1062         }
1063         return 0;
1064 }
1065
1066 /**
1067  * Get PCI information from struct ibv_device.
1068  *
1069  * @param device
1070  *   Pointer to Ethernet device structure.
1071  * @param[out] pci_addr
1072  *   PCI bus address output buffer.
1073  *
1074  * @return
1075  *   0 on success, a negative errno value otherwise and rte_errno is set.
1076  */
1077 int
1078 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
1079                             struct rte_pci_addr *pci_addr)
1080 {
1081         FILE *file;
1082         char line[32];
1083         MKSTR(path, "%s/device/uevent", device->ibdev_path);
1084
1085         file = fopen(path, "rb");
1086         if (file == NULL) {
1087                 rte_errno = errno;
1088                 return -rte_errno;
1089         }
1090         while (fgets(line, sizeof(line), file) == line) {
1091                 size_t len = strlen(line);
1092                 int ret;
1093
1094                 /* Truncate long lines. */
1095                 if (len == (sizeof(line) - 1))
1096                         while (line[(len - 1)] != '\n') {
1097                                 ret = fgetc(file);
1098                                 if (ret == EOF)
1099                                         break;
1100                                 line[(len - 1)] = ret;
1101                         }
1102                 /* Extract information. */
1103                 if (sscanf(line,
1104                            "PCI_SLOT_NAME="
1105                            "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
1106                            &pci_addr->domain,
1107                            &pci_addr->bus,
1108                            &pci_addr->devid,
1109                            &pci_addr->function) == 4) {
1110                         ret = 0;
1111                         break;
1112                 }
1113         }
1114         fclose(file);
1115         return 0;
1116 }
1117
1118 /**
1119  * Handle shared asynchronous events the NIC (removal event
1120  * and link status change). Supports multiport IB device.
1121  *
1122  * @param cb_arg
1123  *   Callback argument.
1124  */
1125 void
1126 mlx5_dev_interrupt_handler(void *cb_arg)
1127 {
1128         struct mlx5_ibv_shared *sh = cb_arg;
1129         struct ibv_async_event event;
1130
1131         /* Read all message from the IB device and acknowledge them. */
1132         for (;;) {
1133                 struct rte_eth_dev *dev;
1134                 uint32_t tmp;
1135
1136                 if (mlx5_glue->get_async_event(sh->ctx, &event))
1137                         break;
1138                 /* Retrieve and check IB port index. */
1139                 tmp = (uint32_t)event.element.port_num;
1140                 assert(tmp && (tmp <= sh->max_port));
1141                 if (!tmp ||
1142                     tmp > sh->max_port ||
1143                     sh->port[tmp - 1].ih_port_id >= RTE_MAX_ETHPORTS) {
1144                         /*
1145                          * Invalid IB port index or no handler
1146                          * installed for this port.
1147                          */
1148                         mlx5_glue->ack_async_event(&event);
1149                         continue;
1150                 }
1151                 /* Retrieve ethernet device descriptor. */
1152                 tmp = sh->port[tmp - 1].ih_port_id;
1153                 dev = &rte_eth_devices[tmp];
1154                 tmp = 0;
1155                 assert(dev);
1156                 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
1157                      event.event_type == IBV_EVENT_PORT_ERR) &&
1158                         dev->data->dev_conf.intr_conf.lsc) {
1159                         mlx5_glue->ack_async_event(&event);
1160                         if (mlx5_link_update(dev, 0) == -EAGAIN) {
1161                                 usleep(0);
1162                                 continue;
1163                         }
1164                         _rte_eth_dev_callback_process
1165                                 (dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1166                         continue;
1167                 }
1168                 if (event.event_type == IBV_EVENT_DEVICE_FATAL &&
1169                     dev->data->dev_conf.intr_conf.rmv) {
1170                         mlx5_glue->ack_async_event(&event);
1171                         _rte_eth_dev_callback_process
1172                                 (dev, RTE_ETH_EVENT_INTR_RMV, NULL);
1173                         continue;
1174                 }
1175                 DRV_LOG(DEBUG,
1176                         "port %u event type %d on not handled",
1177                         dev->data->port_id, event.event_type);
1178                 mlx5_glue->ack_async_event(&event);
1179         }
1180 }
1181
1182 /**
1183  * Uninstall shared asynchronous device events handler.
1184  * This function is implemeted to support event sharing
1185  * between multiple ports of single IB device.
1186  *
1187  * @param dev
1188  *   Pointer to Ethernet device.
1189  */
1190 static void
1191 mlx5_dev_shared_handler_uninstall(struct rte_eth_dev *dev)
1192 {
1193         struct mlx5_priv *priv = dev->data->dev_private;
1194         struct mlx5_ibv_shared *sh = priv->sh;
1195
1196         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1197                 return;
1198         pthread_mutex_lock(&sh->intr_mutex);
1199         assert(priv->ibv_port);
1200         assert(priv->ibv_port <= sh->max_port);
1201         assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1202         if (sh->port[priv->ibv_port - 1].ih_port_id >= RTE_MAX_ETHPORTS)
1203                 goto exit;
1204         assert(sh->port[priv->ibv_port - 1].ih_port_id ==
1205                                         (uint32_t)dev->data->port_id);
1206         assert(sh->intr_cnt);
1207         sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS;
1208         if (!sh->intr_cnt || --sh->intr_cnt)
1209                 goto exit;
1210         rte_intr_callback_unregister(&sh->intr_handle,
1211                                      mlx5_dev_interrupt_handler, sh);
1212         sh->intr_handle.fd = 0;
1213         sh->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1214 exit:
1215         pthread_mutex_unlock(&sh->intr_mutex);
1216 }
1217
1218 /**
1219  * Install shared asyncronous device events handler.
1220  * This function is implemeted to support event sharing
1221  * between multiple ports of single IB device.
1222  *
1223  * @param dev
1224  *   Pointer to Ethernet device.
1225  */
1226 static void
1227 mlx5_dev_shared_handler_install(struct rte_eth_dev *dev)
1228 {
1229         struct mlx5_priv *priv = dev->data->dev_private;
1230         struct mlx5_ibv_shared *sh = priv->sh;
1231         int ret;
1232         int flags;
1233
1234         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1235                 return;
1236         pthread_mutex_lock(&sh->intr_mutex);
1237         assert(priv->ibv_port);
1238         assert(priv->ibv_port <= sh->max_port);
1239         assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1240         if (sh->port[priv->ibv_port - 1].ih_port_id < RTE_MAX_ETHPORTS) {
1241                 /* The handler is already installed for this port. */
1242                 assert(sh->intr_cnt);
1243                 goto exit;
1244         }
1245         sh->port[priv->ibv_port - 1].ih_port_id = (uint32_t)dev->data->port_id;
1246         if (sh->intr_cnt) {
1247                 sh->intr_cnt++;
1248                 goto exit;
1249         }
1250         /* No shared handler installed. */
1251         assert(sh->ctx->async_fd > 0);
1252         flags = fcntl(sh->ctx->async_fd, F_GETFL);
1253         ret = fcntl(sh->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1254         if (ret) {
1255                 DRV_LOG(INFO, "failed to change file descriptor"
1256                               " async event queue");
1257                 /* Indicate there will be no interrupts. */
1258                 dev->data->dev_conf.intr_conf.lsc = 0;
1259                 dev->data->dev_conf.intr_conf.rmv = 0;
1260                 sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS;
1261                 goto exit;
1262         }
1263         sh->intr_handle.fd = sh->ctx->async_fd;
1264         sh->intr_handle.type = RTE_INTR_HANDLE_EXT;
1265         rte_intr_callback_register(&sh->intr_handle,
1266                                    mlx5_dev_interrupt_handler, sh);
1267         sh->intr_cnt++;
1268 exit:
1269         pthread_mutex_unlock(&sh->intr_mutex);
1270 }
1271
1272 /**
1273  * Uninstall interrupt handler.
1274  *
1275  * @param dev
1276  *   Pointer to Ethernet device.
1277  */
1278 void
1279 mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev)
1280 {
1281         mlx5_dev_shared_handler_uninstall(dev);
1282 }
1283
1284 /**
1285  * Install interrupt handler.
1286  *
1287  * @param dev
1288  *   Pointer to Ethernet device.
1289  */
1290 void
1291 mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev)
1292 {
1293         mlx5_dev_shared_handler_install(dev);
1294 }
1295
1296 /**
1297  * DPDK callback to bring the link DOWN.
1298  *
1299  * @param dev
1300  *   Pointer to Ethernet device structure.
1301  *
1302  * @return
1303  *   0 on success, a negative errno value otherwise and rte_errno is set.
1304  */
1305 int
1306 mlx5_set_link_down(struct rte_eth_dev *dev)
1307 {
1308         return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP);
1309 }
1310
1311 /**
1312  * DPDK callback to bring the link UP.
1313  *
1314  * @param dev
1315  *   Pointer to Ethernet device structure.
1316  *
1317  * @return
1318  *   0 on success, a negative errno value otherwise and rte_errno is set.
1319  */
1320 int
1321 mlx5_set_link_up(struct rte_eth_dev *dev)
1322 {
1323         return mlx5_set_flags(dev, ~IFF_UP, IFF_UP);
1324 }
1325
1326 /**
1327  * Configure the TX function to use.
1328  *
1329  * @param dev
1330  *   Pointer to private data structure.
1331  *
1332  * @return
1333  *   Pointer to selected Tx burst function.
1334  */
1335 eth_tx_burst_t
1336 mlx5_select_tx_function(struct rte_eth_dev *dev)
1337 {
1338         struct mlx5_priv *priv = dev->data->dev_private;
1339         eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst;
1340         struct mlx5_dev_config *config = &priv->config;
1341         uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
1342         int tso = !!(tx_offloads & (DEV_TX_OFFLOAD_TCP_TSO |
1343                                     DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
1344                                     DEV_TX_OFFLOAD_GRE_TNL_TSO |
1345                                     DEV_TX_OFFLOAD_IP_TNL_TSO |
1346                                     DEV_TX_OFFLOAD_UDP_TNL_TSO));
1347         int swp = !!(tx_offloads & (DEV_TX_OFFLOAD_IP_TNL_TSO |
1348                                     DEV_TX_OFFLOAD_UDP_TNL_TSO |
1349                                     DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM));
1350         int vlan_insert = !!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT);
1351
1352         assert(priv != NULL);
1353         /* Select appropriate TX function. */
1354         if (vlan_insert || tso || swp)
1355                 return tx_pkt_burst;
1356         if (config->mps == MLX5_MPW_ENHANCED) {
1357                 if (mlx5_check_vec_tx_support(dev) > 0) {
1358                         if (mlx5_check_raw_vec_tx_support(dev) > 0)
1359                                 tx_pkt_burst = mlx5_tx_burst_raw_vec;
1360                         else
1361                                 tx_pkt_burst = mlx5_tx_burst_vec;
1362                         DRV_LOG(DEBUG,
1363                                 "port %u selected enhanced MPW Tx vectorized"
1364                                 " function",
1365                                 dev->data->port_id);
1366                 } else {
1367                         tx_pkt_burst = mlx5_tx_burst_empw;
1368                         DRV_LOG(DEBUG,
1369                                 "port %u selected enhanced MPW Tx function",
1370                                 dev->data->port_id);
1371                 }
1372         } else if (config->mps && (config->txq_inline > 0)) {
1373                 tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1374                 DRV_LOG(DEBUG, "port %u selected MPW inline Tx function",
1375                         dev->data->port_id);
1376         } else if (config->mps) {
1377                 tx_pkt_burst = mlx5_tx_burst_mpw;
1378                 DRV_LOG(DEBUG, "port %u selected MPW Tx function",
1379                         dev->data->port_id);
1380         }
1381         return tx_pkt_burst;
1382 }
1383
1384 /**
1385  * Configure the RX function to use.
1386  *
1387  * @param dev
1388  *   Pointer to private data structure.
1389  *
1390  * @return
1391  *   Pointer to selected Rx burst function.
1392  */
1393 eth_rx_burst_t
1394 mlx5_select_rx_function(struct rte_eth_dev *dev)
1395 {
1396         eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
1397
1398         assert(dev != NULL);
1399         if (mlx5_check_vec_rx_support(dev) > 0) {
1400                 rx_pkt_burst = mlx5_rx_burst_vec;
1401                 DRV_LOG(DEBUG, "port %u selected Rx vectorized function",
1402                         dev->data->port_id);
1403         } else if (mlx5_mprq_enabled(dev)) {
1404                 rx_pkt_burst = mlx5_rx_burst_mprq;
1405         }
1406         return rx_pkt_burst;
1407 }
1408
1409 /**
1410  * Check if mlx5 device was removed.
1411  *
1412  * @param dev
1413  *   Pointer to Ethernet device structure.
1414  *
1415  * @return
1416  *   1 when device is removed, otherwise 0.
1417  */
1418 int
1419 mlx5_is_removed(struct rte_eth_dev *dev)
1420 {
1421         struct ibv_device_attr device_attr;
1422         struct mlx5_priv *priv = dev->data->dev_private;
1423
1424         if (mlx5_glue->query_device(priv->sh->ctx, &device_attr) == EIO)
1425                 return 1;
1426         return 0;
1427 }
1428
1429 /**
1430  * Get port ID list of mlx5 instances sharing a common device.
1431  *
1432  * @param[in] dev
1433  *   Device to look for.
1434  * @param[out] port_list
1435  *   Result buffer for collected port IDs.
1436  * @param port_list_n
1437  *   Maximum number of entries in result buffer. If 0, @p port_list can be
1438  *   NULL.
1439  *
1440  * @return
1441  *   Number of matching instances regardless of the @p port_list_n
1442  *   parameter, 0 if none were found.
1443  */
1444 unsigned int
1445 mlx5_dev_to_port_id(const struct rte_device *dev, uint16_t *port_list,
1446                     unsigned int port_list_n)
1447 {
1448         uint16_t id;
1449         unsigned int n = 0;
1450
1451         RTE_ETH_FOREACH_DEV_OF(id, dev) {
1452                 if (n < port_list_n)
1453                         port_list[n] = id;
1454                 n++;
1455         }
1456         return n;
1457 }
1458
1459 /**
1460  * Get the E-Switch domain id this port belongs to.
1461  *
1462  * @param[in] port
1463  *   Device port id.
1464  * @param[out] es_domain_id
1465  *   E-Switch domain id.
1466  * @param[out] es_port_id
1467  *   The port id of the port in the E-Switch.
1468  *
1469  * @return
1470  *   0 on success, a negative errno value otherwise and rte_errno is set.
1471  */
1472 int
1473 mlx5_port_to_eswitch_info(uint16_t port,
1474                           uint16_t *es_domain_id, uint16_t *es_port_id)
1475 {
1476         struct rte_eth_dev *dev;
1477         struct mlx5_priv *priv;
1478
1479         if (port >= RTE_MAX_ETHPORTS) {
1480                 rte_errno = EINVAL;
1481                 return -rte_errno;
1482         }
1483         if (!rte_eth_dev_is_valid_port(port)) {
1484                 rte_errno = ENODEV;
1485                 return -rte_errno;
1486         }
1487         dev = &rte_eth_devices[port];
1488         priv = dev->data->dev_private;
1489         if (!(priv->representor || priv->master)) {
1490                 rte_errno = EINVAL;
1491                 return -rte_errno;
1492         }
1493         if (es_domain_id)
1494                 *es_domain_id = priv->domain_id;
1495         if (es_port_id)
1496                 *es_port_id = priv->vport_id;
1497         return 0;
1498 }
1499
1500 /**
1501  * Get switch information associated with network interface.
1502  *
1503  * @param ifindex
1504  *   Network interface index.
1505  * @param[out] info
1506  *   Switch information object, populated in case of success.
1507  *
1508  * @return
1509  *   0 on success, a negative errno value otherwise and rte_errno is set.
1510  */
1511 int
1512 mlx5_sysfs_switch_info(unsigned int ifindex, struct mlx5_switch_info *info)
1513 {
1514         char ifname[IF_NAMESIZE];
1515         char port_name[IF_NAMESIZE];
1516         FILE *file;
1517         struct mlx5_switch_info data = {
1518                 .master = 0,
1519                 .representor = 0,
1520                 .name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET,
1521                 .port_name = 0,
1522                 .switch_id = 0,
1523         };
1524         DIR *dir;
1525         bool port_switch_id_set = false;
1526         bool device_dir = false;
1527         char c;
1528         int ret;
1529
1530         if (!if_indextoname(ifindex, ifname)) {
1531                 rte_errno = errno;
1532                 return -rte_errno;
1533         }
1534
1535         MKSTR(phys_port_name, "/sys/class/net/%s/phys_port_name",
1536               ifname);
1537         MKSTR(phys_switch_id, "/sys/class/net/%s/phys_switch_id",
1538               ifname);
1539         MKSTR(pci_device, "/sys/class/net/%s/device",
1540               ifname);
1541
1542         file = fopen(phys_port_name, "rb");
1543         if (file != NULL) {
1544                 ret = fscanf(file, "%s", port_name);
1545                 fclose(file);
1546                 if (ret == 1)
1547                         mlx5_translate_port_name(port_name, &data);
1548         }
1549         file = fopen(phys_switch_id, "rb");
1550         if (file == NULL) {
1551                 rte_errno = errno;
1552                 return -rte_errno;
1553         }
1554         port_switch_id_set =
1555                 fscanf(file, "%" SCNx64 "%c", &data.switch_id, &c) == 2 &&
1556                 c == '\n';
1557         fclose(file);
1558         dir = opendir(pci_device);
1559         if (dir != NULL) {
1560                 closedir(dir);
1561                 device_dir = true;
1562         }
1563         if (port_switch_id_set) {
1564                 /* We have some E-Switch configuration. */
1565                 mlx5_sysfs_check_switch_info(device_dir, &data);
1566         }
1567         *info = data;
1568         assert(!(data.master && data.representor));
1569         if (data.master && data.representor) {
1570                 DRV_LOG(ERR, "ifindex %u device is recognized as master"
1571                              " and as representor", ifindex);
1572                 rte_errno = ENODEV;
1573                 return -rte_errno;
1574         }
1575         return 0;
1576 }
1577
1578 /**
1579  * Analyze gathered port parameters via Netlink to recognize master
1580  * and representor devices for E-Switch configuration.
1581  *
1582  * @param[in] num_vf_set
1583  *   flag of presence of number of VFs port attribute.
1584  * @param[inout] switch_info
1585  *   Port information, including port name as a number and port name
1586  *   type if recognized
1587  *
1588  * @return
1589  *   master and representor flags are set in switch_info according to
1590  *   recognized parameters (if any).
1591  */
1592 void
1593 mlx5_nl_check_switch_info(bool num_vf_set,
1594                           struct mlx5_switch_info *switch_info)
1595 {
1596         switch (switch_info->name_type) {
1597         case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN:
1598                 /*
1599                  * Name is not recognized, assume the master,
1600                  * check the number of VFs key presence.
1601                  */
1602                 switch_info->master = num_vf_set;
1603                 break;
1604         case MLX5_PHYS_PORT_NAME_TYPE_NOTSET:
1605                 /*
1606                  * Name is not set, this assumes the legacy naming
1607                  * schema for master, just check if there is a
1608                  * number of VFs key.
1609                  */
1610                 switch_info->master = num_vf_set;
1611                 break;
1612         case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
1613                 /* New uplink naming schema recognized. */
1614                 switch_info->master = 1;
1615                 break;
1616         case MLX5_PHYS_PORT_NAME_TYPE_LEGACY:
1617                 /* Legacy representors naming schema. */
1618                 switch_info->representor = !num_vf_set;
1619                 break;
1620         case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
1621                 /* New representors naming schema. */
1622                 switch_info->representor = 1;
1623                 break;
1624         }
1625 }
1626
1627 /**
1628  * Analyze gathered port parameters via sysfs to recognize master
1629  * and representor devices for E-Switch configuration.
1630  *
1631  * @param[in] device_dir
1632  *   flag of presence of "device" directory under port device key.
1633  * @param[inout] switch_info
1634  *   Port information, including port name as a number and port name
1635  *   type if recognized
1636  *
1637  * @return
1638  *   master and representor flags are set in switch_info according to
1639  *   recognized parameters (if any).
1640  */
1641 void
1642 mlx5_sysfs_check_switch_info(bool device_dir,
1643                              struct mlx5_switch_info *switch_info)
1644 {
1645         switch (switch_info->name_type) {
1646         case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN:
1647                 /*
1648                  * Name is not recognized, assume the master,
1649                  * check the device directory presence.
1650                  */
1651                 switch_info->master = device_dir;
1652                 break;
1653         case MLX5_PHYS_PORT_NAME_TYPE_NOTSET:
1654                 /*
1655                  * Name is not set, this assumes the legacy naming
1656                  * schema for master, just check if there is
1657                  * a device directory.
1658                  */
1659                 switch_info->master = device_dir;
1660                 break;
1661         case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
1662                 /* New uplink naming schema recognized. */
1663                 switch_info->master = 1;
1664                 break;
1665         case MLX5_PHYS_PORT_NAME_TYPE_LEGACY:
1666                 /* Legacy representors naming schema. */
1667                 switch_info->representor = !device_dir;
1668                 break;
1669         case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
1670                 /* New representors naming schema. */
1671                 switch_info->representor = 1;
1672                 break;
1673         }
1674 }
1675
1676 /**
1677  * Extract port name, as a number, from sysfs or netlink information.
1678  *
1679  * @param[in] port_name_in
1680  *   String representing the port name.
1681  * @param[out] port_info_out
1682  *   Port information, including port name as a number and port name
1683  *   type if recognized
1684  *
1685  * @return
1686  *   port_name field set according to recognized name format.
1687  */
1688 void
1689 mlx5_translate_port_name(const char *port_name_in,
1690                          struct mlx5_switch_info *port_info_out)
1691 {
1692         char pf_c1, pf_c2, vf_c1, vf_c2;
1693         char *end;
1694         int sc_items;
1695
1696         /*
1697          * Check for port-name as a string of the form pf0vf0
1698          * (support kernel ver >= 5.0 or OFED ver >= 4.6).
1699          */
1700         sc_items = sscanf(port_name_in, "%c%c%d%c%c%d",
1701                           &pf_c1, &pf_c2, &port_info_out->pf_num,
1702                           &vf_c1, &vf_c2, &port_info_out->port_name);
1703         if (sc_items == 6 &&
1704             pf_c1 == 'p' && pf_c2 == 'f' &&
1705             vf_c1 == 'v' && vf_c2 == 'f') {
1706                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_PFVF;
1707                 return;
1708         }
1709         /*
1710          * Check for port-name as a string of the form p0
1711          * (support kernel ver >= 5.0, or OFED ver >= 4.6).
1712          */
1713         sc_items = sscanf(port_name_in, "%c%d",
1714                           &pf_c1, &port_info_out->port_name);
1715         if (sc_items == 2 && pf_c1 == 'p') {
1716                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UPLINK;
1717                 return;
1718         }
1719         /* Check for port-name as a number (support kernel ver < 5.0 */
1720         errno = 0;
1721         port_info_out->port_name = strtol(port_name_in, &end, 0);
1722         if (!errno &&
1723             (size_t)(end - port_name_in) == strlen(port_name_in)) {
1724                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_LEGACY;
1725                 return;
1726         }
1727         port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN;
1728         return;
1729 }