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 asynchronous removal event for entire multiport device.
1120  *
1121  * @param sh
1122  *   Infiniband device shared context.
1123  */
1124 static void
1125 mlx5_dev_interrupt_device_fatal(struct mlx5_ibv_shared *sh)
1126 {
1127         uint32_t i;
1128
1129         for (i = 0; i < sh->max_port; ++i) {
1130                 struct rte_eth_dev *dev;
1131
1132                 if (sh->port[i].ih_port_id >= RTE_MAX_ETHPORTS) {
1133                         /*
1134                          * Or not existing port either no
1135                          * handler installed for this port.
1136                          */
1137                         continue;
1138                 }
1139                 dev = &rte_eth_devices[sh->port[i].ih_port_id];
1140                 assert(dev);
1141                 if (dev->data->dev_conf.intr_conf.rmv)
1142                         _rte_eth_dev_callback_process
1143                                 (dev, RTE_ETH_EVENT_INTR_RMV, NULL);
1144         }
1145 }
1146
1147 /**
1148  * Handle shared asynchronous events the NIC (removal event
1149  * and link status change). Supports multiport IB device.
1150  *
1151  * @param cb_arg
1152  *   Callback argument.
1153  */
1154 void
1155 mlx5_dev_interrupt_handler(void *cb_arg)
1156 {
1157         struct mlx5_ibv_shared *sh = cb_arg;
1158         struct ibv_async_event event;
1159
1160         /* Read all message from the IB device and acknowledge them. */
1161         for (;;) {
1162                 struct rte_eth_dev *dev;
1163                 uint32_t tmp;
1164
1165                 if (mlx5_glue->get_async_event(sh->ctx, &event))
1166                         break;
1167                 /* Retrieve and check IB port index. */
1168                 tmp = (uint32_t)event.element.port_num;
1169                 if (!tmp && event.event_type == IBV_EVENT_DEVICE_FATAL) {
1170                         /*
1171                          * The DEVICE_FATAL event is called once for
1172                          * entire device without port specifying.
1173                          * We should notify all existing ports.
1174                          */
1175                         mlx5_glue->ack_async_event(&event);
1176                         mlx5_dev_interrupt_device_fatal(sh);
1177                         continue;
1178                 }
1179                 assert(tmp && (tmp <= sh->max_port));
1180                 if (!tmp) {
1181                         /* Unsupported devive level event. */
1182                         mlx5_glue->ack_async_event(&event);
1183                         DRV_LOG(DEBUG,
1184                                 "unsupported common event (type %d)",
1185                                 event.event_type);
1186                         continue;
1187                 }
1188                 if (tmp > sh->max_port) {
1189                         /* Invalid IB port index. */
1190                         mlx5_glue->ack_async_event(&event);
1191                         DRV_LOG(DEBUG,
1192                                 "cannot handle an event (type %d)"
1193                                 "due to invalid IB port index (%u)",
1194                                 event.event_type, tmp);
1195                         continue;
1196                 }
1197                 if (sh->port[tmp - 1].ih_port_id >= RTE_MAX_ETHPORTS) {
1198                         /* No handler installed. */
1199                         mlx5_glue->ack_async_event(&event);
1200                         DRV_LOG(DEBUG,
1201                                 "cannot handle an event (type %d)"
1202                                 "due to no handler installed for port %u",
1203                                 event.event_type, tmp);
1204                         continue;
1205                 }
1206                 /* Retrieve ethernet device descriptor. */
1207                 tmp = sh->port[tmp - 1].ih_port_id;
1208                 dev = &rte_eth_devices[tmp];
1209                 assert(dev);
1210                 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
1211                      event.event_type == IBV_EVENT_PORT_ERR) &&
1212                         dev->data->dev_conf.intr_conf.lsc) {
1213                         mlx5_glue->ack_async_event(&event);
1214                         if (mlx5_link_update(dev, 0) == -EAGAIN) {
1215                                 usleep(0);
1216                                 continue;
1217                         }
1218                         _rte_eth_dev_callback_process
1219                                 (dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1220                         continue;
1221                 }
1222                 DRV_LOG(DEBUG,
1223                         "port %u cannot handle an unknown event (type %d)",
1224                         dev->data->port_id, event.event_type);
1225                 mlx5_glue->ack_async_event(&event);
1226         }
1227 }
1228
1229 /**
1230  * Uninstall shared asynchronous device events handler.
1231  * This function is implemeted to support event sharing
1232  * between multiple ports of single IB device.
1233  *
1234  * @param dev
1235  *   Pointer to Ethernet device.
1236  */
1237 static void
1238 mlx5_dev_shared_handler_uninstall(struct rte_eth_dev *dev)
1239 {
1240         struct mlx5_priv *priv = dev->data->dev_private;
1241         struct mlx5_ibv_shared *sh = priv->sh;
1242
1243         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1244                 return;
1245         pthread_mutex_lock(&sh->intr_mutex);
1246         assert(priv->ibv_port);
1247         assert(priv->ibv_port <= sh->max_port);
1248         assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1249         if (sh->port[priv->ibv_port - 1].ih_port_id >= RTE_MAX_ETHPORTS)
1250                 goto exit;
1251         assert(sh->port[priv->ibv_port - 1].ih_port_id ==
1252                                         (uint32_t)dev->data->port_id);
1253         assert(sh->intr_cnt);
1254         sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS;
1255         if (!sh->intr_cnt || --sh->intr_cnt)
1256                 goto exit;
1257         rte_intr_callback_unregister(&sh->intr_handle,
1258                                      mlx5_dev_interrupt_handler, sh);
1259         sh->intr_handle.fd = 0;
1260         sh->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1261 exit:
1262         pthread_mutex_unlock(&sh->intr_mutex);
1263 }
1264
1265 /**
1266  * Install shared asyncronous device events handler.
1267  * This function is implemeted to support event sharing
1268  * between multiple ports of single IB device.
1269  *
1270  * @param dev
1271  *   Pointer to Ethernet device.
1272  */
1273 static void
1274 mlx5_dev_shared_handler_install(struct rte_eth_dev *dev)
1275 {
1276         struct mlx5_priv *priv = dev->data->dev_private;
1277         struct mlx5_ibv_shared *sh = priv->sh;
1278         int ret;
1279         int flags;
1280
1281         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1282                 return;
1283         pthread_mutex_lock(&sh->intr_mutex);
1284         assert(priv->ibv_port);
1285         assert(priv->ibv_port <= sh->max_port);
1286         assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1287         if (sh->port[priv->ibv_port - 1].ih_port_id < RTE_MAX_ETHPORTS) {
1288                 /* The handler is already installed for this port. */
1289                 assert(sh->intr_cnt);
1290                 goto exit;
1291         }
1292         sh->port[priv->ibv_port - 1].ih_port_id = (uint32_t)dev->data->port_id;
1293         if (sh->intr_cnt) {
1294                 sh->intr_cnt++;
1295                 goto exit;
1296         }
1297         /* No shared handler installed. */
1298         assert(sh->ctx->async_fd > 0);
1299         flags = fcntl(sh->ctx->async_fd, F_GETFL);
1300         ret = fcntl(sh->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1301         if (ret) {
1302                 DRV_LOG(INFO, "failed to change file descriptor"
1303                               " async event queue");
1304                 /* Indicate there will be no interrupts. */
1305                 dev->data->dev_conf.intr_conf.lsc = 0;
1306                 dev->data->dev_conf.intr_conf.rmv = 0;
1307                 sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS;
1308                 goto exit;
1309         }
1310         sh->intr_handle.fd = sh->ctx->async_fd;
1311         sh->intr_handle.type = RTE_INTR_HANDLE_EXT;
1312         rte_intr_callback_register(&sh->intr_handle,
1313                                    mlx5_dev_interrupt_handler, sh);
1314         sh->intr_cnt++;
1315 exit:
1316         pthread_mutex_unlock(&sh->intr_mutex);
1317 }
1318
1319 /**
1320  * Uninstall interrupt handler.
1321  *
1322  * @param dev
1323  *   Pointer to Ethernet device.
1324  */
1325 void
1326 mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev)
1327 {
1328         mlx5_dev_shared_handler_uninstall(dev);
1329 }
1330
1331 /**
1332  * Install interrupt handler.
1333  *
1334  * @param dev
1335  *   Pointer to Ethernet device.
1336  */
1337 void
1338 mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev)
1339 {
1340         mlx5_dev_shared_handler_install(dev);
1341 }
1342
1343 /**
1344  * DPDK callback to bring the link DOWN.
1345  *
1346  * @param dev
1347  *   Pointer to Ethernet device structure.
1348  *
1349  * @return
1350  *   0 on success, a negative errno value otherwise and rte_errno is set.
1351  */
1352 int
1353 mlx5_set_link_down(struct rte_eth_dev *dev)
1354 {
1355         return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP);
1356 }
1357
1358 /**
1359  * DPDK callback to bring the link UP.
1360  *
1361  * @param dev
1362  *   Pointer to Ethernet device structure.
1363  *
1364  * @return
1365  *   0 on success, a negative errno value otherwise and rte_errno is set.
1366  */
1367 int
1368 mlx5_set_link_up(struct rte_eth_dev *dev)
1369 {
1370         return mlx5_set_flags(dev, ~IFF_UP, IFF_UP);
1371 }
1372
1373 /**
1374  * Configure the TX function to use.
1375  *
1376  * @param dev
1377  *   Pointer to private data structure.
1378  *
1379  * @return
1380  *   Pointer to selected Tx burst function.
1381  */
1382 eth_tx_burst_t
1383 mlx5_select_tx_function(struct rte_eth_dev *dev)
1384 {
1385         struct mlx5_priv *priv = dev->data->dev_private;
1386         eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst;
1387         struct mlx5_dev_config *config = &priv->config;
1388         uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
1389         int tso = !!(tx_offloads & (DEV_TX_OFFLOAD_TCP_TSO |
1390                                     DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
1391                                     DEV_TX_OFFLOAD_GRE_TNL_TSO |
1392                                     DEV_TX_OFFLOAD_IP_TNL_TSO |
1393                                     DEV_TX_OFFLOAD_UDP_TNL_TSO));
1394         int swp = !!(tx_offloads & (DEV_TX_OFFLOAD_IP_TNL_TSO |
1395                                     DEV_TX_OFFLOAD_UDP_TNL_TSO |
1396                                     DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM));
1397         int vlan_insert = !!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT);
1398
1399         assert(priv != NULL);
1400         /* Select appropriate TX function. */
1401         if (vlan_insert || tso || swp)
1402                 return tx_pkt_burst;
1403         if (config->mps == MLX5_MPW_ENHANCED) {
1404                 if (mlx5_check_vec_tx_support(dev) > 0) {
1405                         if (mlx5_check_raw_vec_tx_support(dev) > 0)
1406                                 tx_pkt_burst = mlx5_tx_burst_raw_vec;
1407                         else
1408                                 tx_pkt_burst = mlx5_tx_burst_vec;
1409                         DRV_LOG(DEBUG,
1410                                 "port %u selected enhanced MPW Tx vectorized"
1411                                 " function",
1412                                 dev->data->port_id);
1413                 } else {
1414                         tx_pkt_burst = mlx5_tx_burst_empw;
1415                         DRV_LOG(DEBUG,
1416                                 "port %u selected enhanced MPW Tx function",
1417                                 dev->data->port_id);
1418                 }
1419         } else if (config->mps && (config->txq_inline > 0)) {
1420                 tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1421                 DRV_LOG(DEBUG, "port %u selected MPW inline Tx function",
1422                         dev->data->port_id);
1423         } else if (config->mps) {
1424                 tx_pkt_burst = mlx5_tx_burst_mpw;
1425                 DRV_LOG(DEBUG, "port %u selected MPW Tx function",
1426                         dev->data->port_id);
1427         }
1428         return tx_pkt_burst;
1429 }
1430
1431 /**
1432  * Configure the RX function to use.
1433  *
1434  * @param dev
1435  *   Pointer to private data structure.
1436  *
1437  * @return
1438  *   Pointer to selected Rx burst function.
1439  */
1440 eth_rx_burst_t
1441 mlx5_select_rx_function(struct rte_eth_dev *dev)
1442 {
1443         eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
1444
1445         assert(dev != NULL);
1446         if (mlx5_check_vec_rx_support(dev) > 0) {
1447                 rx_pkt_burst = mlx5_rx_burst_vec;
1448                 DRV_LOG(DEBUG, "port %u selected Rx vectorized function",
1449                         dev->data->port_id);
1450         } else if (mlx5_mprq_enabled(dev)) {
1451                 rx_pkt_burst = mlx5_rx_burst_mprq;
1452         }
1453         return rx_pkt_burst;
1454 }
1455
1456 /**
1457  * Check if mlx5 device was removed.
1458  *
1459  * @param dev
1460  *   Pointer to Ethernet device structure.
1461  *
1462  * @return
1463  *   1 when device is removed, otherwise 0.
1464  */
1465 int
1466 mlx5_is_removed(struct rte_eth_dev *dev)
1467 {
1468         struct ibv_device_attr device_attr;
1469         struct mlx5_priv *priv = dev->data->dev_private;
1470
1471         if (mlx5_glue->query_device(priv->sh->ctx, &device_attr) == EIO)
1472                 return 1;
1473         return 0;
1474 }
1475
1476 /**
1477  * Get port ID list of mlx5 instances sharing a common device.
1478  *
1479  * @param[in] dev
1480  *   Device to look for.
1481  * @param[out] port_list
1482  *   Result buffer for collected port IDs.
1483  * @param port_list_n
1484  *   Maximum number of entries in result buffer. If 0, @p port_list can be
1485  *   NULL.
1486  *
1487  * @return
1488  *   Number of matching instances regardless of the @p port_list_n
1489  *   parameter, 0 if none were found.
1490  */
1491 unsigned int
1492 mlx5_dev_to_port_id(const struct rte_device *dev, uint16_t *port_list,
1493                     unsigned int port_list_n)
1494 {
1495         uint16_t id;
1496         unsigned int n = 0;
1497
1498         RTE_ETH_FOREACH_DEV_OF(id, dev) {
1499                 if (n < port_list_n)
1500                         port_list[n] = id;
1501                 n++;
1502         }
1503         return n;
1504 }
1505
1506 /**
1507  * Get the E-Switch domain id this port belongs to.
1508  *
1509  * @param[in] port
1510  *   Device port id.
1511  * @param[out] es_domain_id
1512  *   E-Switch domain id.
1513  * @param[out] es_port_id
1514  *   The port id of the port in the E-Switch.
1515  *
1516  * @return
1517  *   0 on success, a negative errno value otherwise and rte_errno is set.
1518  */
1519 int
1520 mlx5_port_to_eswitch_info(uint16_t port,
1521                           uint16_t *es_domain_id, uint16_t *es_port_id)
1522 {
1523         struct rte_eth_dev *dev;
1524         struct mlx5_priv *priv;
1525
1526         if (port >= RTE_MAX_ETHPORTS) {
1527                 rte_errno = EINVAL;
1528                 return -rte_errno;
1529         }
1530         if (!rte_eth_dev_is_valid_port(port)) {
1531                 rte_errno = ENODEV;
1532                 return -rte_errno;
1533         }
1534         dev = &rte_eth_devices[port];
1535         priv = dev->data->dev_private;
1536         if (!(priv->representor || priv->master)) {
1537                 rte_errno = EINVAL;
1538                 return -rte_errno;
1539         }
1540         if (es_domain_id)
1541                 *es_domain_id = priv->domain_id;
1542         if (es_port_id)
1543                 *es_port_id = priv->vport_id;
1544         return 0;
1545 }
1546
1547 /**
1548  * Get switch information associated with network interface.
1549  *
1550  * @param ifindex
1551  *   Network interface index.
1552  * @param[out] info
1553  *   Switch information object, populated in case of success.
1554  *
1555  * @return
1556  *   0 on success, a negative errno value otherwise and rte_errno is set.
1557  */
1558 int
1559 mlx5_sysfs_switch_info(unsigned int ifindex, struct mlx5_switch_info *info)
1560 {
1561         char ifname[IF_NAMESIZE];
1562         char port_name[IF_NAMESIZE];
1563         FILE *file;
1564         struct mlx5_switch_info data = {
1565                 .master = 0,
1566                 .representor = 0,
1567                 .name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET,
1568                 .port_name = 0,
1569                 .switch_id = 0,
1570         };
1571         DIR *dir;
1572         bool port_switch_id_set = false;
1573         bool device_dir = false;
1574         char c;
1575         int ret;
1576
1577         if (!if_indextoname(ifindex, ifname)) {
1578                 rte_errno = errno;
1579                 return -rte_errno;
1580         }
1581
1582         MKSTR(phys_port_name, "/sys/class/net/%s/phys_port_name",
1583               ifname);
1584         MKSTR(phys_switch_id, "/sys/class/net/%s/phys_switch_id",
1585               ifname);
1586         MKSTR(pci_device, "/sys/class/net/%s/device",
1587               ifname);
1588
1589         file = fopen(phys_port_name, "rb");
1590         if (file != NULL) {
1591                 ret = fscanf(file, "%s", port_name);
1592                 fclose(file);
1593                 if (ret == 1)
1594                         mlx5_translate_port_name(port_name, &data);
1595         }
1596         file = fopen(phys_switch_id, "rb");
1597         if (file == NULL) {
1598                 rte_errno = errno;
1599                 return -rte_errno;
1600         }
1601         port_switch_id_set =
1602                 fscanf(file, "%" SCNx64 "%c", &data.switch_id, &c) == 2 &&
1603                 c == '\n';
1604         fclose(file);
1605         dir = opendir(pci_device);
1606         if (dir != NULL) {
1607                 closedir(dir);
1608                 device_dir = true;
1609         }
1610         if (port_switch_id_set) {
1611                 /* We have some E-Switch configuration. */
1612                 mlx5_sysfs_check_switch_info(device_dir, &data);
1613         }
1614         *info = data;
1615         assert(!(data.master && data.representor));
1616         if (data.master && data.representor) {
1617                 DRV_LOG(ERR, "ifindex %u device is recognized as master"
1618                              " and as representor", ifindex);
1619                 rte_errno = ENODEV;
1620                 return -rte_errno;
1621         }
1622         return 0;
1623 }
1624
1625 /**
1626  * Analyze gathered port parameters via Netlink to recognize master
1627  * and representor devices for E-Switch configuration.
1628  *
1629  * @param[in] num_vf_set
1630  *   flag of presence of number of VFs port attribute.
1631  * @param[inout] switch_info
1632  *   Port information, including port name as a number and port name
1633  *   type if recognized
1634  *
1635  * @return
1636  *   master and representor flags are set in switch_info according to
1637  *   recognized parameters (if any).
1638  */
1639 void
1640 mlx5_nl_check_switch_info(bool num_vf_set,
1641                           struct mlx5_switch_info *switch_info)
1642 {
1643         switch (switch_info->name_type) {
1644         case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN:
1645                 /*
1646                  * Name is not recognized, assume the master,
1647                  * check the number of VFs key presence.
1648                  */
1649                 switch_info->master = num_vf_set;
1650                 break;
1651         case MLX5_PHYS_PORT_NAME_TYPE_NOTSET:
1652                 /*
1653                  * Name is not set, this assumes the legacy naming
1654                  * schema for master, just check if there is a
1655                  * number of VFs key.
1656                  */
1657                 switch_info->master = num_vf_set;
1658                 break;
1659         case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
1660                 /* New uplink naming schema recognized. */
1661                 switch_info->master = 1;
1662                 break;
1663         case MLX5_PHYS_PORT_NAME_TYPE_LEGACY:
1664                 /* Legacy representors naming schema. */
1665                 switch_info->representor = !num_vf_set;
1666                 break;
1667         case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
1668                 /* New representors naming schema. */
1669                 switch_info->representor = 1;
1670                 break;
1671         }
1672 }
1673
1674 /**
1675  * Analyze gathered port parameters via sysfs to recognize master
1676  * and representor devices for E-Switch configuration.
1677  *
1678  * @param[in] device_dir
1679  *   flag of presence of "device" directory under port device key.
1680  * @param[inout] switch_info
1681  *   Port information, including port name as a number and port name
1682  *   type if recognized
1683  *
1684  * @return
1685  *   master and representor flags are set in switch_info according to
1686  *   recognized parameters (if any).
1687  */
1688 void
1689 mlx5_sysfs_check_switch_info(bool device_dir,
1690                              struct mlx5_switch_info *switch_info)
1691 {
1692         switch (switch_info->name_type) {
1693         case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN:
1694                 /*
1695                  * Name is not recognized, assume the master,
1696                  * check the device directory presence.
1697                  */
1698                 switch_info->master = device_dir;
1699                 break;
1700         case MLX5_PHYS_PORT_NAME_TYPE_NOTSET:
1701                 /*
1702                  * Name is not set, this assumes the legacy naming
1703                  * schema for master, just check if there is
1704                  * a device directory.
1705                  */
1706                 switch_info->master = device_dir;
1707                 break;
1708         case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
1709                 /* New uplink naming schema recognized. */
1710                 switch_info->master = 1;
1711                 break;
1712         case MLX5_PHYS_PORT_NAME_TYPE_LEGACY:
1713                 /* Legacy representors naming schema. */
1714                 switch_info->representor = !device_dir;
1715                 break;
1716         case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
1717                 /* New representors naming schema. */
1718                 switch_info->representor = 1;
1719                 break;
1720         }
1721 }
1722
1723 /**
1724  * Extract port name, as a number, from sysfs or netlink information.
1725  *
1726  * @param[in] port_name_in
1727  *   String representing the port name.
1728  * @param[out] port_info_out
1729  *   Port information, including port name as a number and port name
1730  *   type if recognized
1731  *
1732  * @return
1733  *   port_name field set according to recognized name format.
1734  */
1735 void
1736 mlx5_translate_port_name(const char *port_name_in,
1737                          struct mlx5_switch_info *port_info_out)
1738 {
1739         char pf_c1, pf_c2, vf_c1, vf_c2;
1740         char *end;
1741         int sc_items;
1742
1743         /*
1744          * Check for port-name as a string of the form pf0vf0
1745          * (support kernel ver >= 5.0 or OFED ver >= 4.6).
1746          */
1747         sc_items = sscanf(port_name_in, "%c%c%d%c%c%d",
1748                           &pf_c1, &pf_c2, &port_info_out->pf_num,
1749                           &vf_c1, &vf_c2, &port_info_out->port_name);
1750         if (sc_items == 6 &&
1751             pf_c1 == 'p' && pf_c2 == 'f' &&
1752             vf_c1 == 'v' && vf_c2 == 'f') {
1753                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_PFVF;
1754                 return;
1755         }
1756         /*
1757          * Check for port-name as a string of the form p0
1758          * (support kernel ver >= 5.0, or OFED ver >= 4.6).
1759          */
1760         sc_items = sscanf(port_name_in, "%c%d",
1761                           &pf_c1, &port_info_out->port_name);
1762         if (sc_items == 2 && pf_c1 == 'p') {
1763                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UPLINK;
1764                 return;
1765         }
1766         /* Check for port-name as a number (support kernel ver < 5.0 */
1767         errno = 0;
1768         port_info_out->port_name = strtol(port_name_in, &end, 0);
1769         if (!errno &&
1770             (size_t)(end - port_name_in) == strlen(port_name_in)) {
1771                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_LEGACY;
1772                 return;
1773         }
1774         port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN;
1775         return;
1776 }