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 device current raw clock counter
 573  *
 574  * @param dev
 575  *   Pointer to Ethernet device structure.
 576  * @param[out] time
 577  *   Current raw clock counter of the device.
 578  *
 579  * @return
 580  *   0 if the clock has correctly been read
 581  *   The value of errno in case of error
 582  */
 583 int
 584 mlx5_read_clock(struct rte_eth_dev *dev, uint64_t *clock)
 585 {
 586         struct mlx5_priv *priv = dev->data->dev_private;
 587         struct ibv_context *ctx = priv->sh->ctx;
 588         struct ibv_values_ex values;
 589         int err = 0;
 590
 591         values.comp_mask = IBV_VALUES_MASK_RAW_CLOCK;
 592         err = mlx5_glue->query_rt_values_ex(ctx, &values);
 593         if (err != 0) {
 594                 DRV_LOG(WARNING, "Could not query the clock !");
 595                 return err;
 596         }
 597         *clock = values.raw_clock.tv_nsec;
 598         return 0;
 599 }
 600
 601 /**
 602  * Get firmware version of a device.
 603  *
 604  * @param dev
 605  *   Ethernet device port.
 606  * @param fw_ver
 607  *   String output allocated by caller.
 608  * @param fw_size
 609  *   Size of the output string, including terminating null byte.
 610  *
 611  * @return
 612  *   0 on success, or the size of the non truncated string if too big.
 613  */
 614 int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size)
 615 {
 616         struct mlx5_priv *priv = dev->data->dev_private;
 617         struct ibv_device_attr *attr = &priv->sh->device_attr.orig_attr;
 618         size_t size = strnlen(attr->fw_ver, sizeof(attr->fw_ver)) + 1;
 619
 620         if (fw_size < size)
 621                 return size;
 622         if (fw_ver != NULL)
 623                 strlcpy(fw_ver, attr->fw_ver, fw_size);
 624         return 0;
 625 }
 626
 627 /**
 628  * Get supported packet types.
 629  *
 630  * @param dev
 631  *   Pointer to Ethernet device structure.
 632  *
 633  * @return
 634  *   A pointer to the supported Packet types array.
 635  */
 636 const uint32_t *
 637 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 638 {
 639         static const uint32_t ptypes[] = {
 640                 /* refers to rxq_cq_to_pkt_type() */
 641                 RTE_PTYPE_L2_ETHER,
 642                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 643                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 644                 RTE_PTYPE_L4_NONFRAG,
 645                 RTE_PTYPE_L4_FRAG,
 646                 RTE_PTYPE_L4_TCP,
 647                 RTE_PTYPE_L4_UDP,
 648                 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
 649                 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
 650                 RTE_PTYPE_INNER_L4_NONFRAG,
 651                 RTE_PTYPE_INNER_L4_FRAG,
 652                 RTE_PTYPE_INNER_L4_TCP,
 653                 RTE_PTYPE_INNER_L4_UDP,
 654                 RTE_PTYPE_UNKNOWN
 655         };
 656
 657         if (dev->rx_pkt_burst == mlx5_rx_burst ||
 658             dev->rx_pkt_burst == mlx5_rx_burst_mprq ||
 659             dev->rx_pkt_burst == mlx5_rx_burst_vec)
 660                 return ptypes;
 661         return NULL;
 662 }
 663
 664 /**
 665  * Retrieve the master device for representor in the same switch domain.
 666  *
 667  * @param dev
 668  *   Pointer to representor Ethernet device structure.
 669  *
 670  * @return
 671  *   Master device structure  on success, NULL otherwise.
 672  */
 673
 674 static struct rte_eth_dev *
 675 mlx5_find_master_dev(struct rte_eth_dev *dev)
 676 {
 677         struct mlx5_priv *priv;
 678         uint16_t port_id;
 679         uint16_t domain_id;
 680
 681         priv = dev->data->dev_private;
 682         domain_id = priv->domain_id;
 683         assert(priv->representor);
 684         RTE_ETH_FOREACH_DEV_OF(port_id, dev->device) {
 685                 priv = rte_eth_devices[port_id].data->dev_private;
 686                 if (priv &&
 687                     priv->master &&
 688                     priv->domain_id == domain_id)
 689                         return &rte_eth_devices[port_id];
 690         }
 691         return NULL;
 692 }
 693
 694 /**
 695  * DPDK callback to retrieve physical link information.
 696  *
 697  * @param dev
 698  *   Pointer to Ethernet device structure.
 699  * @param[out] link
 700  *   Storage for current link status.
 701  *
 702  * @return
 703  *   0 on success, a negative errno value otherwise and rte_errno is set.
 704  */
 705 static int
 706 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev,
 707                                struct rte_eth_link *link)
 708 {
 709         struct mlx5_priv *priv = dev->data->dev_private;
 710         struct ethtool_cmd edata = {
 711                 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
 712         };
 713         struct ifreq ifr;
 714         struct rte_eth_link dev_link;
 715         int link_speed = 0;
 716         int ret;
 717
 718         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
 719         if (ret) {
 720                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
 721                         dev->data->port_id, strerror(rte_errno));
 722                 return ret;
 723         }
 724         dev_link = (struct rte_eth_link) {
 725                 .link_status = ((ifr.ifr_flags & IFF_UP) &&
 726                                 (ifr.ifr_flags & IFF_RUNNING)),
 727         };
 728         ifr = (struct ifreq) {
 729                 .ifr_data = (void *)&edata,
 730         };
 731         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 732         if (ret) {
 733                 if (ret == -ENOTSUP && priv->representor) {
 734                         struct rte_eth_dev *master;
 735
 736                         /*
 737                          * For representors we can try to inherit link
 738                          * settings from the master device. Actually
 739                          * link settings do not make a lot of sense
 740                          * for representors due to missing physical
 741                          * link. The old kernel drivers supported
 742                          * emulated settings query for representors,
 743                          * the new ones do not, so we have to add
 744                          * this code for compatibility issues.
 745                          */
 746                         master = mlx5_find_master_dev(dev);
 747                         if (master) {
 748                                 ifr = (struct ifreq) {
 749                                         .ifr_data = (void *)&edata,
 750                                 };
 751                                 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr);
 752                         }
 753                 }
 754                 if (ret) {
 755                         DRV_LOG(WARNING,
 756                                 "port %u ioctl(SIOCETHTOOL,"
 757                                 " ETHTOOL_GSET) failed: %s",
 758                                 dev->data->port_id, strerror(rte_errno));
 759                         return ret;
 760                 }
 761         }
 762         link_speed = ethtool_cmd_speed(&edata);
 763         if (link_speed == -1)
 764                 dev_link.link_speed = ETH_SPEED_NUM_NONE;
 765         else
 766                 dev_link.link_speed = link_speed;
 767         priv->link_speed_capa = 0;
 768         if (edata.supported & SUPPORTED_Autoneg)
 769                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 770         if (edata.supported & (SUPPORTED_1000baseT_Full |
 771                                SUPPORTED_1000baseKX_Full))
 772                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 773         if (edata.supported & SUPPORTED_10000baseKR_Full)
 774                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 775         if (edata.supported & (SUPPORTED_40000baseKR4_Full |
 776                                SUPPORTED_40000baseCR4_Full |
 777                                SUPPORTED_40000baseSR4_Full |
 778                                SUPPORTED_40000baseLR4_Full))
 779                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 780         dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
 781                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 782         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 783                         ETH_LINK_SPEED_FIXED);
 784         if (((dev_link.link_speed && !dev_link.link_status) ||
 785              (!dev_link.link_speed && dev_link.link_status))) {
 786                 rte_errno = EAGAIN;
 787                 return -rte_errno;
 788         }
 789         *link = dev_link;
 790         return 0;
 791 }
 792
 793 /**
 794  * Retrieve physical link information (unlocked version using new ioctl).
 795  *
 796  * @param dev
 797  *   Pointer to Ethernet device structure.
 798  * @param[out] link
 799  *   Storage for current link status.
 800  *
 801  * @return
 802  *   0 on success, a negative errno value otherwise and rte_errno is set.
 803  */
 804 static int
 805 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev,
 806                              struct rte_eth_link *link)
 807
 808 {
 809         struct mlx5_priv *priv = dev->data->dev_private;
 810         struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
 811         struct ifreq ifr;
 812         struct rte_eth_link dev_link;
 813         struct rte_eth_dev *master = NULL;
 814         uint64_t sc;
 815         int ret;
 816
 817         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
 818         if (ret) {
 819                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
 820                         dev->data->port_id, strerror(rte_errno));
 821                 return ret;
 822         }
 823         dev_link = (struct rte_eth_link) {
 824                 .link_status = ((ifr.ifr_flags & IFF_UP) &&
 825                                 (ifr.ifr_flags & IFF_RUNNING)),
 826         };
 827         ifr = (struct ifreq) {
 828                 .ifr_data = (void *)&gcmd,
 829         };
 830         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 831         if (ret) {
 832                 if (ret == -ENOTSUP && priv->representor) {
 833                         /*
 834                          * For representors we can try to inherit link
 835                          * settings from the master device. Actually
 836                          * link settings do not make a lot of sense
 837                          * for representors due to missing physical
 838                          * link. The old kernel drivers supported
 839                          * emulated settings query for representors,
 840                          * the new ones do not, so we have to add
 841                          * this code for compatibility issues.
 842                          */
 843                         master = mlx5_find_master_dev(dev);
 844                         if (master) {
 845                                 ifr = (struct ifreq) {
 846                                         .ifr_data = (void *)&gcmd,
 847                                 };
 848                                 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr);
 849                         }
 850                 }
 851                 if (ret) {
 852                         DRV_LOG(DEBUG,
 853                                 "port %u ioctl(SIOCETHTOOL,"
 854                                 " ETHTOOL_GLINKSETTINGS) failed: %s",
 855                                 dev->data->port_id, strerror(rte_errno));
 856                         return ret;
 857                 }
 858
 859         }
 860         gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
 861
 862         alignas(struct ethtool_link_settings)
 863         uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
 864                      sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
 865         struct ethtool_link_settings *ecmd = (void *)data;
 866
 867         *ecmd = gcmd;
 868         ifr.ifr_data = (void *)ecmd;
 869         ret = mlx5_ifreq(master ? master : dev, SIOCETHTOOL, &ifr);
 870         if (ret) {
 871                 DRV_LOG(DEBUG,
 872                         "port %u ioctl(SIOCETHTOOL,"
 873                         "ETHTOOL_GLINKSETTINGS) failed: %s",
 874                         dev->data->port_id, strerror(rte_errno));
 875                 return ret;
 876         }
 877         dev_link.link_speed = ecmd->speed;
 878         sc = ecmd->link_mode_masks[0] |
 879                 ((uint64_t)ecmd->link_mode_masks[1] << 32);
 880         priv->link_speed_capa = 0;
 881         if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
 882                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 883         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
 884                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
 885                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 886         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
 887                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
 888                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
 889                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 890         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
 891                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
 892                 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
 893         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
 894                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
 895                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
 896                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
 897                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 898         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
 899                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
 900                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
 901                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
 902                 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
 903         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
 904                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
 905                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
 906                 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
 907         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
 908                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
 909                 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
 910         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
 911                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
 912                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
 913                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
 914                 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
 915         dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
 916                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 917         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 918                                   ETH_LINK_SPEED_FIXED);
 919         if (((dev_link.link_speed && !dev_link.link_status) ||
 920              (!dev_link.link_speed && dev_link.link_status))) {
 921                 rte_errno = EAGAIN;
 922                 return -rte_errno;
 923         }
 924         *link = dev_link;
 925         return 0;
 926 }
 927
 928 /**
 929  * DPDK callback to retrieve physical link information.
 930  *
 931  * @param dev
 932  *   Pointer to Ethernet device structure.
 933  * @param wait_to_complete
 934  *   Wait for request completion.
 935  *
 936  * @return
 937  *   0 if link status was not updated, positive if it was, a negative errno
 938  *   value otherwise and rte_errno is set.
 939  */
 940 int
 941 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 942 {
 943         int ret;
 944         struct rte_eth_link dev_link;
 945         time_t start_time = time(NULL);
 946
 947         do {
 948                 ret = mlx5_link_update_unlocked_gs(dev, &dev_link);
 949                 if (ret)
 950                         ret = mlx5_link_update_unlocked_gset(dev, &dev_link);
 951                 if (ret == 0)
 952                         break;
 953                 /* Handle wait to complete situation. */
 954                 if (wait_to_complete && ret == -EAGAIN) {
 955                         if (abs((int)difftime(time(NULL), start_time)) <
 956                             MLX5_LINK_STATUS_TIMEOUT) {
 957                                 usleep(0);
 958                                 continue;
 959                         } else {
 960                                 rte_errno = EBUSY;
 961                                 return -rte_errno;
 962                         }
 963                 } else if (ret < 0) {
 964                         return ret;
 965                 }
 966         } while (wait_to_complete);
 967         ret = !!memcmp(&dev->data->dev_link, &dev_link,
 968                        sizeof(struct rte_eth_link));
 969         dev->data->dev_link = dev_link;
 970         return ret;
 971 }
 972
 973 /**
 974  * DPDK callback to change the MTU.
 975  *
 976  * @param dev
 977  *   Pointer to Ethernet device structure.
 978  * @param in_mtu
 979  *   New MTU.
 980  *
 981  * @return
 982  *   0 on success, a negative errno value otherwise and rte_errno is set.
 983  */
 984 int
 985 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 986 {
 987         struct mlx5_priv *priv = dev->data->dev_private;
 988         uint16_t kern_mtu = 0;
 989         int ret;
 990
 991         ret = mlx5_get_mtu(dev, &kern_mtu);
 992         if (ret)
 993                 return ret;
 994         /* Set kernel interface MTU first. */
 995         ret = mlx5_set_mtu(dev, mtu);
 996         if (ret)
 997                 return ret;
 998         ret = mlx5_get_mtu(dev, &kern_mtu);
 999         if (ret)
1000                 return ret;
1001         if (kern_mtu == mtu) {
1002                 priv->mtu = mtu;
1003                 DRV_LOG(DEBUG, "port %u adapter MTU set to %u",
1004                         dev->data->port_id, mtu);
1005                 return 0;
1006         }
1007         rte_errno = EAGAIN;
1008         return -rte_errno;
1009 }
1010
1011 /**
1012  * DPDK callback to get flow control status.
1013  *
1014  * @param dev
1015  *   Pointer to Ethernet device structure.
1016  * @param[out] fc_conf
1017  *   Flow control output buffer.
1018  *
1019  * @return
1020  *   0 on success, a negative errno value otherwise and rte_errno is set.
1021  */
1022 int
1023 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1024 {
1025         struct ifreq ifr;
1026         struct ethtool_pauseparam ethpause = {
1027                 .cmd = ETHTOOL_GPAUSEPARAM
1028         };
1029         int ret;
1030
1031         ifr.ifr_data = (void *)&ethpause;
1032         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
1033         if (ret) {
1034                 DRV_LOG(WARNING,
1035                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM) failed:"
1036                         " %s",
1037                         dev->data->port_id, strerror(rte_errno));
1038                 return ret;
1039         }
1040         fc_conf->autoneg = ethpause.autoneg;
1041         if (ethpause.rx_pause && ethpause.tx_pause)
1042                 fc_conf->mode = RTE_FC_FULL;
1043         else if (ethpause.rx_pause)
1044                 fc_conf->mode = RTE_FC_RX_PAUSE;
1045         else if (ethpause.tx_pause)
1046                 fc_conf->mode = RTE_FC_TX_PAUSE;
1047         else
1048                 fc_conf->mode = RTE_FC_NONE;
1049         return 0;
1050 }
1051
1052 /**
1053  * DPDK callback to modify flow control parameters.
1054  *
1055  * @param dev
1056  *   Pointer to Ethernet device structure.
1057  * @param[in] fc_conf
1058  *   Flow control parameters.
1059  *
1060  * @return
1061  *   0 on success, a negative errno value otherwise and rte_errno is set.
1062  */
1063 int
1064 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1065 {
1066         struct ifreq ifr;
1067         struct ethtool_pauseparam ethpause = {
1068                 .cmd = ETHTOOL_SPAUSEPARAM
1069         };
1070         int ret;
1071
1072         ifr.ifr_data = (void *)&ethpause;
1073         ethpause.autoneg = fc_conf->autoneg;
1074         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1075             (fc_conf->mode & RTE_FC_RX_PAUSE))
1076                 ethpause.rx_pause = 1;
1077         else
1078                 ethpause.rx_pause = 0;
1079
1080         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1081             (fc_conf->mode & RTE_FC_TX_PAUSE))
1082                 ethpause.tx_pause = 1;
1083         else
1084                 ethpause.tx_pause = 0;
1085         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
1086         if (ret) {
1087                 DRV_LOG(WARNING,
1088                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
1089                         " failed: %s",
1090                         dev->data->port_id, strerror(rte_errno));
1091                 return ret;
1092         }
1093         return 0;
1094 }
1095
1096 /**
1097  * Get PCI information from struct ibv_device.
1098  *
1099  * @param device
1100  *   Pointer to Ethernet device structure.
1101  * @param[out] pci_addr
1102  *   PCI bus address output buffer.
1103  *
1104  * @return
1105  *   0 on success, a negative errno value otherwise and rte_errno is set.
1106  */
1107 int
1108 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
1109                             struct rte_pci_addr *pci_addr)
1110 {
1111         FILE *file;
1112         char line[32];
1113         MKSTR(path, "%s/device/uevent", device->ibdev_path);
1114
1115         file = fopen(path, "rb");
1116         if (file == NULL) {
1117                 rte_errno = errno;
1118                 return -rte_errno;
1119         }
1120         while (fgets(line, sizeof(line), file) == line) {
1121                 size_t len = strlen(line);
1122                 int ret;
1123
1124                 /* Truncate long lines. */
1125                 if (len == (sizeof(line) - 1))
1126                         while (line[(len - 1)] != '\n') {
1127                                 ret = fgetc(file);
1128                                 if (ret == EOF)
1129                                         break;
1130                                 line[(len - 1)] = ret;
1131                         }
1132                 /* Extract information. */
1133                 if (sscanf(line,
1134                            "PCI_SLOT_NAME="
1135                            "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
1136                            &pci_addr->domain,
1137                            &pci_addr->bus,
1138                            &pci_addr->devid,
1139                            &pci_addr->function) == 4) {
1140                         ret = 0;
1141                         break;
1142                 }
1143         }
1144         fclose(file);
1145         return 0;
1146 }
1147
1148 /**
1149  * Handle asynchronous removal event for entire multiport device.
1150  *
1151  * @param sh
1152  *   Infiniband device shared context.
1153  */
1154 static void
1155 mlx5_dev_interrupt_device_fatal(struct mlx5_ibv_shared *sh)
1156 {
1157         uint32_t i;
1158
1159         for (i = 0; i < sh->max_port; ++i) {
1160                 struct rte_eth_dev *dev;
1161
1162                 if (sh->port[i].ih_port_id >= RTE_MAX_ETHPORTS) {
1163                         /*
1164                          * Or not existing port either no
1165                          * handler installed for this port.
1166                          */
1167                         continue;
1168                 }
1169                 dev = &rte_eth_devices[sh->port[i].ih_port_id];
1170                 assert(dev);
1171                 if (dev->data->dev_conf.intr_conf.rmv)
1172                         _rte_eth_dev_callback_process
1173                                 (dev, RTE_ETH_EVENT_INTR_RMV, NULL);
1174         }
1175 }
1176
1177 /**
1178  * Handle shared asynchronous events the NIC (removal event
1179  * and link status change). Supports multiport IB device.
1180  *
1181  * @param cb_arg
1182  *   Callback argument.
1183  */
1184 void
1185 mlx5_dev_interrupt_handler(void *cb_arg)
1186 {
1187         struct mlx5_ibv_shared *sh = cb_arg;
1188         struct ibv_async_event event;
1189
1190         /* Read all message from the IB device and acknowledge them. */
1191         for (;;) {
1192                 struct rte_eth_dev *dev;
1193                 uint32_t tmp;
1194
1195                 if (mlx5_glue->get_async_event(sh->ctx, &event))
1196                         break;
1197                 /* Retrieve and check IB port index. */
1198                 tmp = (uint32_t)event.element.port_num;
1199                 if (!tmp && event.event_type == IBV_EVENT_DEVICE_FATAL) {
1200                         /*
1201                          * The DEVICE_FATAL event is called once for
1202                          * entire device without port specifying.
1203                          * We should notify all existing ports.
1204                          */
1205                         mlx5_glue->ack_async_event(&event);
1206                         mlx5_dev_interrupt_device_fatal(sh);
1207                         continue;
1208                 }
1209                 assert(tmp && (tmp <= sh->max_port));
1210                 if (!tmp) {
1211                         /* Unsupported devive level event. */
1212                         mlx5_glue->ack_async_event(&event);
1213                         DRV_LOG(DEBUG,
1214                                 "unsupported common event (type %d)",
1215                                 event.event_type);
1216                         continue;
1217                 }
1218                 if (tmp > sh->max_port) {
1219                         /* Invalid IB port index. */
1220                         mlx5_glue->ack_async_event(&event);
1221                         DRV_LOG(DEBUG,
1222                                 "cannot handle an event (type %d)"
1223                                 "due to invalid IB port index (%u)",
1224                                 event.event_type, tmp);
1225                         continue;
1226                 }
1227                 if (sh->port[tmp - 1].ih_port_id >= RTE_MAX_ETHPORTS) {
1228                         /* No handler installed. */
1229                         mlx5_glue->ack_async_event(&event);
1230                         DRV_LOG(DEBUG,
1231                                 "cannot handle an event (type %d)"
1232                                 "due to no handler installed for port %u",
1233                                 event.event_type, tmp);
1234                         continue;
1235                 }
1236                 /* Retrieve ethernet device descriptor. */
1237                 tmp = sh->port[tmp - 1].ih_port_id;
1238                 dev = &rte_eth_devices[tmp];
1239                 assert(dev);
1240                 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
1241                      event.event_type == IBV_EVENT_PORT_ERR) &&
1242                         dev->data->dev_conf.intr_conf.lsc) {
1243                         mlx5_glue->ack_async_event(&event);
1244                         if (mlx5_link_update(dev, 0) == -EAGAIN) {
1245                                 usleep(0);
1246                                 continue;
1247                         }
1248                         _rte_eth_dev_callback_process
1249                                 (dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1250                         continue;
1251                 }
1252                 DRV_LOG(DEBUG,
1253                         "port %u cannot handle an unknown event (type %d)",
1254                         dev->data->port_id, event.event_type);
1255                 mlx5_glue->ack_async_event(&event);
1256         }
1257 }
1258
1259 /**
1260  * Uninstall shared asynchronous device events handler.
1261  * This function is implemeted to support event sharing
1262  * between multiple ports of single IB device.
1263  *
1264  * @param dev
1265  *   Pointer to Ethernet device.
1266  */
1267 static void
1268 mlx5_dev_shared_handler_uninstall(struct rte_eth_dev *dev)
1269 {
1270         struct mlx5_priv *priv = dev->data->dev_private;
1271         struct mlx5_ibv_shared *sh = priv->sh;
1272
1273         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1274                 return;
1275         pthread_mutex_lock(&sh->intr_mutex);
1276         assert(priv->ibv_port);
1277         assert(priv->ibv_port <= sh->max_port);
1278         assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1279         if (sh->port[priv->ibv_port - 1].ih_port_id >= RTE_MAX_ETHPORTS)
1280                 goto exit;
1281         assert(sh->port[priv->ibv_port - 1].ih_port_id ==
1282                                         (uint32_t)dev->data->port_id);
1283         assert(sh->intr_cnt);
1284         sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS;
1285         if (!sh->intr_cnt || --sh->intr_cnt)
1286                 goto exit;
1287         rte_intr_callback_unregister(&sh->intr_handle,
1288                                      mlx5_dev_interrupt_handler, sh);
1289         sh->intr_handle.fd = 0;
1290         sh->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1291 exit:
1292         pthread_mutex_unlock(&sh->intr_mutex);
1293 }
1294
1295 /**
1296  * Install shared asyncronous device events handler.
1297  * This function is implemeted to support event sharing
1298  * between multiple ports of single IB device.
1299  *
1300  * @param dev
1301  *   Pointer to Ethernet device.
1302  */
1303 static void
1304 mlx5_dev_shared_handler_install(struct rte_eth_dev *dev)
1305 {
1306         struct mlx5_priv *priv = dev->data->dev_private;
1307         struct mlx5_ibv_shared *sh = priv->sh;
1308         int ret;
1309         int flags;
1310
1311         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1312                 return;
1313         pthread_mutex_lock(&sh->intr_mutex);
1314         assert(priv->ibv_port);
1315         assert(priv->ibv_port <= sh->max_port);
1316         assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1317         if (sh->port[priv->ibv_port - 1].ih_port_id < RTE_MAX_ETHPORTS) {
1318                 /* The handler is already installed for this port. */
1319                 assert(sh->intr_cnt);
1320                 goto exit;
1321         }
1322         sh->port[priv->ibv_port - 1].ih_port_id = (uint32_t)dev->data->port_id;
1323         if (sh->intr_cnt) {
1324                 sh->intr_cnt++;
1325                 goto exit;
1326         }
1327         /* No shared handler installed. */
1328         assert(sh->ctx->async_fd > 0);
1329         flags = fcntl(sh->ctx->async_fd, F_GETFL);
1330         ret = fcntl(sh->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1331         if (ret) {
1332                 DRV_LOG(INFO, "failed to change file descriptor"
1333                               " async event queue");
1334                 /* Indicate there will be no interrupts. */
1335                 dev->data->dev_conf.intr_conf.lsc = 0;
1336                 dev->data->dev_conf.intr_conf.rmv = 0;
1337                 sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS;
1338                 goto exit;
1339         }
1340         sh->intr_handle.fd = sh->ctx->async_fd;
1341         sh->intr_handle.type = RTE_INTR_HANDLE_EXT;
1342         rte_intr_callback_register(&sh->intr_handle,
1343                                    mlx5_dev_interrupt_handler, sh);
1344         sh->intr_cnt++;
1345 exit:
1346         pthread_mutex_unlock(&sh->intr_mutex);
1347 }
1348
1349 /**
1350  * Uninstall interrupt handler.
1351  *
1352  * @param dev
1353  *   Pointer to Ethernet device.
1354  */
1355 void
1356 mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev)
1357 {
1358         mlx5_dev_shared_handler_uninstall(dev);
1359 }
1360
1361 /**
1362  * Install interrupt handler.
1363  *
1364  * @param dev
1365  *   Pointer to Ethernet device.
1366  */
1367 void
1368 mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev)
1369 {
1370         mlx5_dev_shared_handler_install(dev);
1371 }
1372
1373 /**
1374  * DPDK callback to bring the link DOWN.
1375  *
1376  * @param dev
1377  *   Pointer to Ethernet device structure.
1378  *
1379  * @return
1380  *   0 on success, a negative errno value otherwise and rte_errno is set.
1381  */
1382 int
1383 mlx5_set_link_down(struct rte_eth_dev *dev)
1384 {
1385         return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP);
1386 }
1387
1388 /**
1389  * DPDK callback to bring the link UP.
1390  *
1391  * @param dev
1392  *   Pointer to Ethernet device structure.
1393  *
1394  * @return
1395  *   0 on success, a negative errno value otherwise and rte_errno is set.
1396  */
1397 int
1398 mlx5_set_link_up(struct rte_eth_dev *dev)
1399 {
1400         return mlx5_set_flags(dev, ~IFF_UP, IFF_UP);
1401 }
1402
1403 /**
1404  * Configure the TX function to use.
1405  *
1406  * @param dev
1407  *   Pointer to private data structure.
1408  *
1409  * @return
1410  *   Pointer to selected Tx burst function.
1411  */
1412 eth_tx_burst_t
1413 mlx5_select_tx_function(struct rte_eth_dev *dev)
1414 {
1415         struct mlx5_priv *priv = dev->data->dev_private;
1416         eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst;
1417         struct mlx5_dev_config *config = &priv->config;
1418         uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
1419         int tso = !!(tx_offloads & (DEV_TX_OFFLOAD_TCP_TSO |
1420                                     DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
1421                                     DEV_TX_OFFLOAD_GRE_TNL_TSO |
1422                                     DEV_TX_OFFLOAD_IP_TNL_TSO |
1423                                     DEV_TX_OFFLOAD_UDP_TNL_TSO));
1424         int swp = !!(tx_offloads & (DEV_TX_OFFLOAD_IP_TNL_TSO |
1425                                     DEV_TX_OFFLOAD_UDP_TNL_TSO |
1426                                     DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM));
1427         int vlan_insert = !!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT);
1428
1429         assert(priv != NULL);
1430         /* Select appropriate TX function. */
1431         if (vlan_insert || tso || swp)
1432                 return tx_pkt_burst;
1433         if (config->mps == MLX5_MPW_ENHANCED) {
1434                 if (mlx5_check_vec_tx_support(dev) > 0) {
1435                         if (mlx5_check_raw_vec_tx_support(dev) > 0)
1436                                 tx_pkt_burst = mlx5_tx_burst_raw_vec;
1437                         else
1438                                 tx_pkt_burst = mlx5_tx_burst_vec;
1439                         DRV_LOG(DEBUG,
1440                                 "port %u selected enhanced MPW Tx vectorized"
1441                                 " function",
1442                                 dev->data->port_id);
1443                 } else {
1444                         tx_pkt_burst = mlx5_tx_burst_empw;
1445                         DRV_LOG(DEBUG,
1446                                 "port %u selected enhanced MPW Tx function",
1447                                 dev->data->port_id);
1448                 }
1449         } else if (config->mps && (config->txq_inline > 0)) {
1450                 tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1451                 DRV_LOG(DEBUG, "port %u selected MPW inline Tx function",
1452                         dev->data->port_id);
1453         } else if (config->mps) {
1454                 tx_pkt_burst = mlx5_tx_burst_mpw;
1455                 DRV_LOG(DEBUG, "port %u selected MPW Tx function",
1456                         dev->data->port_id);
1457         }
1458         return tx_pkt_burst;
1459 }
1460
1461 /**
1462  * Configure the RX function to use.
1463  *
1464  * @param dev
1465  *   Pointer to private data structure.
1466  *
1467  * @return
1468  *   Pointer to selected Rx burst function.
1469  */
1470 eth_rx_burst_t
1471 mlx5_select_rx_function(struct rte_eth_dev *dev)
1472 {
1473         eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
1474
1475         assert(dev != NULL);
1476         if (mlx5_check_vec_rx_support(dev) > 0) {
1477                 rx_pkt_burst = mlx5_rx_burst_vec;
1478                 DRV_LOG(DEBUG, "port %u selected Rx vectorized function",
1479                         dev->data->port_id);
1480         } else if (mlx5_mprq_enabled(dev)) {
1481                 rx_pkt_burst = mlx5_rx_burst_mprq;
1482         }
1483         return rx_pkt_burst;
1484 }
1485
1486 /**
1487  * Check if mlx5 device was removed.
1488  *
1489  * @param dev
1490  *   Pointer to Ethernet device structure.
1491  *
1492  * @return
1493  *   1 when device is removed, otherwise 0.
1494  */
1495 int
1496 mlx5_is_removed(struct rte_eth_dev *dev)
1497 {
1498         struct ibv_device_attr device_attr;
1499         struct mlx5_priv *priv = dev->data->dev_private;
1500
1501         if (mlx5_glue->query_device(priv->sh->ctx, &device_attr) == EIO)
1502                 return 1;
1503         return 0;
1504 }
1505
1506 /**
1507  * Get port ID list of mlx5 instances sharing a common device.
1508  *
1509  * @param[in] dev
1510  *   Device to look for.
1511  * @param[out] port_list
1512  *   Result buffer for collected port IDs.
1513  * @param port_list_n
1514  *   Maximum number of entries in result buffer. If 0, @p port_list can be
1515  *   NULL.
1516  *
1517  * @return
1518  *   Number of matching instances regardless of the @p port_list_n
1519  *   parameter, 0 if none were found.
1520  */
1521 unsigned int
1522 mlx5_dev_to_port_id(const struct rte_device *dev, uint16_t *port_list,
1523                     unsigned int port_list_n)
1524 {
1525         uint16_t id;
1526         unsigned int n = 0;
1527
1528         RTE_ETH_FOREACH_DEV_OF(id, dev) {
1529                 if (n < port_list_n)
1530                         port_list[n] = id;
1531                 n++;
1532         }
1533         return n;
1534 }
1535
1536 /**
1537  * Get the E-Switch domain id this port belongs to.
1538  *
1539  * @param[in] port
1540  *   Device port id.
1541  * @param[out] es_domain_id
1542  *   E-Switch domain id.
1543  * @param[out] es_port_id
1544  *   The port id of the port in the E-Switch.
1545  *
1546  * @return
1547  *   0 on success, a negative errno value otherwise and rte_errno is set.
1548  */
1549 int
1550 mlx5_port_to_eswitch_info(uint16_t port,
1551                           uint16_t *es_domain_id, uint16_t *es_port_id)
1552 {
1553         struct rte_eth_dev *dev;
1554         struct mlx5_priv *priv;
1555
1556         if (port >= RTE_MAX_ETHPORTS) {
1557                 rte_errno = EINVAL;
1558                 return -rte_errno;
1559         }
1560         if (!rte_eth_dev_is_valid_port(port)) {
1561                 rte_errno = ENODEV;
1562                 return -rte_errno;
1563         }
1564         dev = &rte_eth_devices[port];
1565         priv = dev->data->dev_private;
1566         if (!(priv->representor || priv->master)) {
1567                 rte_errno = EINVAL;
1568                 return -rte_errno;
1569         }
1570         if (es_domain_id)
1571                 *es_domain_id = priv->domain_id;
1572         if (es_port_id)
1573                 *es_port_id = priv->vport_id;
1574         return 0;
1575 }
1576
1577 /**
1578  * Get switch information associated with network interface.
1579  *
1580  * @param ifindex
1581  *   Network interface index.
1582  * @param[out] info
1583  *   Switch information object, populated in case of success.
1584  *
1585  * @return
1586  *   0 on success, a negative errno value otherwise and rte_errno is set.
1587  */
1588 int
1589 mlx5_sysfs_switch_info(unsigned int ifindex, struct mlx5_switch_info *info)
1590 {
1591         char ifname[IF_NAMESIZE];
1592         char port_name[IF_NAMESIZE];
1593         FILE *file;
1594         struct mlx5_switch_info data = {
1595                 .master = 0,
1596                 .representor = 0,
1597                 .name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET,
1598                 .port_name = 0,
1599                 .switch_id = 0,
1600         };
1601         DIR *dir;
1602         bool port_switch_id_set = false;
1603         bool device_dir = false;
1604         char c;
1605         int ret;
1606
1607         if (!if_indextoname(ifindex, ifname)) {
1608                 rte_errno = errno;
1609                 return -rte_errno;
1610         }
1611
1612         MKSTR(phys_port_name, "/sys/class/net/%s/phys_port_name",
1613               ifname);
1614         MKSTR(phys_switch_id, "/sys/class/net/%s/phys_switch_id",
1615               ifname);
1616         MKSTR(pci_device, "/sys/class/net/%s/device",
1617               ifname);
1618
1619         file = fopen(phys_port_name, "rb");
1620         if (file != NULL) {
1621                 ret = fscanf(file, "%s", port_name);
1622                 fclose(file);
1623                 if (ret == 1)
1624                         mlx5_translate_port_name(port_name, &data);
1625         }
1626         file = fopen(phys_switch_id, "rb");
1627         if (file == NULL) {
1628                 rte_errno = errno;
1629                 return -rte_errno;
1630         }
1631         port_switch_id_set =
1632                 fscanf(file, "%" SCNx64 "%c", &data.switch_id, &c) == 2 &&
1633                 c == '\n';
1634         fclose(file);
1635         dir = opendir(pci_device);
1636         if (dir != NULL) {
1637                 closedir(dir);
1638                 device_dir = true;
1639         }
1640         if (port_switch_id_set) {
1641                 /* We have some E-Switch configuration. */
1642                 mlx5_sysfs_check_switch_info(device_dir, &data);
1643         }
1644         *info = data;
1645         assert(!(data.master && data.representor));
1646         if (data.master && data.representor) {
1647                 DRV_LOG(ERR, "ifindex %u device is recognized as master"
1648                              " and as representor", ifindex);
1649                 rte_errno = ENODEV;
1650                 return -rte_errno;
1651         }
1652         return 0;
1653 }
1654
1655 /**
1656  * Analyze gathered port parameters via Netlink to recognize master
1657  * and representor devices for E-Switch configuration.
1658  *
1659  * @param[in] num_vf_set
1660  *   flag of presence of number of VFs port attribute.
1661  * @param[inout] switch_info
1662  *   Port information, including port name as a number and port name
1663  *   type if recognized
1664  *
1665  * @return
1666  *   master and representor flags are set in switch_info according to
1667  *   recognized parameters (if any).
1668  */
1669 void
1670 mlx5_nl_check_switch_info(bool num_vf_set,
1671                           struct mlx5_switch_info *switch_info)
1672 {
1673         switch (switch_info->name_type) {
1674         case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN:
1675                 /*
1676                  * Name is not recognized, assume the master,
1677                  * check the number of VFs key presence.
1678                  */
1679                 switch_info->master = num_vf_set;
1680                 break;
1681         case MLX5_PHYS_PORT_NAME_TYPE_NOTSET:
1682                 /*
1683                  * Name is not set, this assumes the legacy naming
1684                  * schema for master, just check if there is a
1685                  * number of VFs key.
1686                  */
1687                 switch_info->master = num_vf_set;
1688                 break;
1689         case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
1690                 /* New uplink naming schema recognized. */
1691                 switch_info->master = 1;
1692                 break;
1693         case MLX5_PHYS_PORT_NAME_TYPE_LEGACY:
1694                 /* Legacy representors naming schema. */
1695                 switch_info->representor = !num_vf_set;
1696                 break;
1697         case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
1698                 /* New representors naming schema. */
1699                 switch_info->representor = 1;
1700                 break;
1701         }
1702 }
1703
1704 /**
1705  * Analyze gathered port parameters via sysfs to recognize master
1706  * and representor devices for E-Switch configuration.
1707  *
1708  * @param[in] device_dir
1709  *   flag of presence of "device" directory under port device key.
1710  * @param[inout] switch_info
1711  *   Port information, including port name as a number and port name
1712  *   type if recognized
1713  *
1714  * @return
1715  *   master and representor flags are set in switch_info according to
1716  *   recognized parameters (if any).
1717  */
1718 void
1719 mlx5_sysfs_check_switch_info(bool device_dir,
1720                              struct mlx5_switch_info *switch_info)
1721 {
1722         switch (switch_info->name_type) {
1723         case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN:
1724                 /*
1725                  * Name is not recognized, assume the master,
1726                  * check the device directory presence.
1727                  */
1728                 switch_info->master = device_dir;
1729                 break;
1730         case MLX5_PHYS_PORT_NAME_TYPE_NOTSET:
1731                 /*
1732                  * Name is not set, this assumes the legacy naming
1733                  * schema for master, just check if there is
1734                  * a device directory.
1735                  */
1736                 switch_info->master = device_dir;
1737                 break;
1738         case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
1739                 /* New uplink naming schema recognized. */
1740                 switch_info->master = 1;
1741                 break;
1742         case MLX5_PHYS_PORT_NAME_TYPE_LEGACY:
1743                 /* Legacy representors naming schema. */
1744                 switch_info->representor = !device_dir;
1745                 break;
1746         case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
1747                 /* New representors naming schema. */
1748                 switch_info->representor = 1;
1749                 break;
1750         }
1751 }
1752
1753 /**
1754  * Extract port name, as a number, from sysfs or netlink information.
1755  *
1756  * @param[in] port_name_in
1757  *   String representing the port name.
1758  * @param[out] port_info_out
1759  *   Port information, including port name as a number and port name
1760  *   type if recognized
1761  *
1762  * @return
1763  *   port_name field set according to recognized name format.
1764  */
1765 void
1766 mlx5_translate_port_name(const char *port_name_in,
1767                          struct mlx5_switch_info *port_info_out)
1768 {
1769         char pf_c1, pf_c2, vf_c1, vf_c2;
1770         char *end;
1771         int sc_items;
1772
1773         /*
1774          * Check for port-name as a string of the form pf0vf0
1775          * (support kernel ver >= 5.0 or OFED ver >= 4.6).
1776          */
1777         sc_items = sscanf(port_name_in, "%c%c%d%c%c%d",
1778                           &pf_c1, &pf_c2, &port_info_out->pf_num,
1779                           &vf_c1, &vf_c2, &port_info_out->port_name);
1780         if (sc_items == 6 &&
1781             pf_c1 == 'p' && pf_c2 == 'f' &&
1782             vf_c1 == 'v' && vf_c2 == 'f') {
1783                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_PFVF;
1784                 return;
1785         }
1786         /*
1787          * Check for port-name as a string of the form p0
1788          * (support kernel ver >= 5.0, or OFED ver >= 4.6).
1789          */
1790         sc_items = sscanf(port_name_in, "%c%d",
1791                           &pf_c1, &port_info_out->port_name);
1792         if (sc_items == 2 && pf_c1 == 'p') {
1793                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UPLINK;
1794                 return;
1795         }
1796         /* Check for port-name as a number (support kernel ver < 5.0 */
1797         errno = 0;
1798         port_info_out->port_name = strtol(port_name_in, &end, 0);
1799         if (!errno &&
1800             (size_t)(end - port_name_in) == strlen(port_name_in)) {
1801                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_LEGACY;
1802                 return;
1803         }
1804         port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN;
1805         return;
1806 }