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 <stdbool.h>
  11 #include <stdint.h>
  12 #include <stdio.h>
  13 #include <string.h>
  14 #include <stdlib.h>
  15 #include <errno.h>
  16 #include <dirent.h>
  17 #include <net/if.h>
  18 #include <sys/ioctl.h>
  19 #include <sys/socket.h>
  20 #include <netinet/in.h>
  21 #include <linux/ethtool.h>
  22 #include <linux/sockios.h>
  23 #include <fcntl.h>
  24 #include <stdalign.h>
  25 #include <sys/un.h>
  26 #include <time.h>
  27
  28 #include <rte_atomic.h>
  29 #include <rte_ethdev_driver.h>
  30 #include <rte_bus_pci.h>
  31 #include <rte_mbuf.h>
  32 #include <rte_common.h>
  33 #include <rte_interrupts.h>
  34 #include <rte_malloc.h>
  35 #include <rte_string_fns.h>
  36 #include <rte_rwlock.h>
  37 #include <rte_cycles.h>
  38
  39 #include "mlx5.h"
  40 #include "mlx5_glue.h"
  41 #include "mlx5_rxtx.h"
  42 #include "mlx5_utils.h"
  43
  44 /* Supported speed values found in /usr/include/linux/ethtool.h */
  45 #ifndef HAVE_SUPPORTED_40000baseKR4_Full
  46 #define SUPPORTED_40000baseKR4_Full (1 << 23)
  47 #endif
  48 #ifndef HAVE_SUPPORTED_40000baseCR4_Full
  49 #define SUPPORTED_40000baseCR4_Full (1 << 24)
  50 #endif
  51 #ifndef HAVE_SUPPORTED_40000baseSR4_Full
  52 #define SUPPORTED_40000baseSR4_Full (1 << 25)
  53 #endif
  54 #ifndef HAVE_SUPPORTED_40000baseLR4_Full
  55 #define SUPPORTED_40000baseLR4_Full (1 << 26)
  56 #endif
  57 #ifndef HAVE_SUPPORTED_56000baseKR4_Full
  58 #define SUPPORTED_56000baseKR4_Full (1 << 27)
  59 #endif
  60 #ifndef HAVE_SUPPORTED_56000baseCR4_Full
  61 #define SUPPORTED_56000baseCR4_Full (1 << 28)
  62 #endif
  63 #ifndef HAVE_SUPPORTED_56000baseSR4_Full
  64 #define SUPPORTED_56000baseSR4_Full (1 << 29)
  65 #endif
  66 #ifndef HAVE_SUPPORTED_56000baseLR4_Full
  67 #define SUPPORTED_56000baseLR4_Full (1 << 30)
  68 #endif
  69
  70 /* Add defines in case the running kernel is not the same as user headers. */
  71 #ifndef ETHTOOL_GLINKSETTINGS
  72 struct ethtool_link_settings {
  73         uint32_t cmd;
  74         uint32_t speed;
  75         uint8_t duplex;
  76         uint8_t port;
  77         uint8_t phy_address;
  78         uint8_t autoneg;
  79         uint8_t mdio_support;
  80         uint8_t eth_to_mdix;
  81         uint8_t eth_tp_mdix_ctrl;
  82         int8_t link_mode_masks_nwords;
  83         uint32_t reserved[8];
  84         uint32_t link_mode_masks[];
  85 };
  86
  87 #define ETHTOOL_GLINKSETTINGS 0x0000004c
  88 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5
  89 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6
  90 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17
  91 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18
  92 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19
  93 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20
  94 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21
  95 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22
  96 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23
  97 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24
  98 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25
  99 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26
 100 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27
 101 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28
 102 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29
 103 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30
 104 #endif
 105 #ifndef HAVE_ETHTOOL_LINK_MODE_25G
 106 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31
 107 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32
 108 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33
 109 #endif
 110 #ifndef HAVE_ETHTOOL_LINK_MODE_50G
 111 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34
 112 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35
 113 #endif
 114 #ifndef HAVE_ETHTOOL_LINK_MODE_100G
 115 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36
 116 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37
 117 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38
 118 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39
 119 #endif
 120
 121 /**
 122  * Get master interface name from private structure.
 123  *
 124  * @param[in] dev
 125  *   Pointer to Ethernet device.
 126  * @param[out] ifname
 127  *   Interface name output buffer.
 128  *
 129  * @return
 130  *   0 on success, a negative errno value otherwise and rte_errno is set.
 131  */
 132 int
 133 mlx5_get_master_ifname(const char *ibdev_path, char (*ifname)[IF_NAMESIZE])
 134 {
 135         DIR *dir;
 136         struct dirent *dent;
 137         unsigned int dev_type = 0;
 138         unsigned int dev_port_prev = ~0u;
 139         char match[IF_NAMESIZE] = "";
 140
 141         assert(ibdev_path);
 142         {
 143                 MKSTR(path, "%s/device/net", ibdev_path);
 144
 145                 dir = opendir(path);
 146                 if (dir == NULL) {
 147                         rte_errno = errno;
 148                         return -rte_errno;
 149                 }
 150         }
 151         while ((dent = readdir(dir)) != NULL) {
 152                 char *name = dent->d_name;
 153                 FILE *file;
 154                 unsigned int dev_port;
 155                 int r;
 156
 157                 if ((name[0] == '.') &&
 158                     ((name[1] == '\0') ||
 159                      ((name[1] == '.') && (name[2] == '\0'))))
 160                         continue;
 161
 162                 MKSTR(path, "%s/device/net/%s/%s",
 163                       ibdev_path, name,
 164                       (dev_type ? "dev_id" : "dev_port"));
 165
 166                 file = fopen(path, "rb");
 167                 if (file == NULL) {
 168                         if (errno != ENOENT)
 169                                 continue;
 170                         /*
 171                          * Switch to dev_id when dev_port does not exist as
 172                          * is the case with Linux kernel versions < 3.15.
 173                          */
 174 try_dev_id:
 175                         match[0] = '\0';
 176                         if (dev_type)
 177                                 break;
 178                         dev_type = 1;
 179                         dev_port_prev = ~0u;
 180                         rewinddir(dir);
 181                         continue;
 182                 }
 183                 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
 184                 fclose(file);
 185                 if (r != 1)
 186                         continue;
 187                 /*
 188                  * Switch to dev_id when dev_port returns the same value for
 189                  * all ports. May happen when using a MOFED release older than
 190                  * 3.0 with a Linux kernel >= 3.15.
 191                  */
 192                 if (dev_port == dev_port_prev)
 193                         goto try_dev_id;
 194                 dev_port_prev = dev_port;
 195                 if (dev_port == 0)
 196                         strlcpy(match, name, sizeof(match));
 197         }
 198         closedir(dir);
 199         if (match[0] == '\0') {
 200                 rte_errno = ENOENT;
 201                 return -rte_errno;
 202         }
 203         strncpy(*ifname, match, sizeof(*ifname));
 204         return 0;
 205 }
 206
 207 /**
 208  * Get interface name from private structure.
 209  *
 210  * This is a port representor-aware version of mlx5_get_master_ifname().
 211  *
 212  * @param[in] dev
 213  *   Pointer to Ethernet device.
 214  * @param[out] ifname
 215  *   Interface name output buffer.
 216  *
 217  * @return
 218  *   0 on success, a negative errno value otherwise and rte_errno is set.
 219  */
 220 int
 221 mlx5_get_ifname(const struct rte_eth_dev *dev, char (*ifname)[IF_NAMESIZE])
 222 {
 223         struct mlx5_priv *priv = dev->data->dev_private;
 224         unsigned int ifindex;
 225
 226         assert(priv);
 227         assert(priv->sh);
 228         ifindex = mlx5_ifindex(dev);
 229         if (!ifindex) {
 230                 if (!priv->representor)
 231                         return mlx5_get_master_ifname(priv->sh->ibdev_path,
 232                                                       ifname);
 233                 rte_errno = ENXIO;
 234                 return -rte_errno;
 235         }
 236         if (if_indextoname(ifindex, &(*ifname)[0]))
 237                 return 0;
 238         rte_errno = errno;
 239         return -rte_errno;
 240 }
 241
 242 /**
 243  * Get the interface index from device name.
 244  *
 245  * @param[in] dev
 246  *   Pointer to Ethernet device.
 247  *
 248  * @return
 249  *   Nonzero interface index on success, zero otherwise and rte_errno is set.
 250  */
 251 unsigned int
 252 mlx5_ifindex(const struct rte_eth_dev *dev)
 253 {
 254         struct mlx5_priv *priv = dev->data->dev_private;
 255         unsigned int ifindex;
 256
 257         assert(priv);
 258         assert(priv->if_index);
 259         ifindex = priv->if_index;
 260         if (!ifindex)
 261                 rte_errno = ENXIO;
 262         return ifindex;
 263 }
 264
 265 /**
 266  * Perform ifreq ioctl() on associated Ethernet device.
 267  *
 268  * @param[in] dev
 269  *   Pointer to Ethernet device.
 270  * @param req
 271  *   Request number to pass to ioctl().
 272  * @param[out] ifr
 273  *   Interface request structure output buffer.
 274  *
 275  * @return
 276  *   0 on success, a negative errno value otherwise and rte_errno is set.
 277  */
 278 int
 279 mlx5_ifreq(const struct rte_eth_dev *dev, int req, struct ifreq *ifr)
 280 {
 281         int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
 282         int ret = 0;
 283
 284         if (sock == -1) {
 285                 rte_errno = errno;
 286                 return -rte_errno;
 287         }
 288         ret = mlx5_get_ifname(dev, &ifr->ifr_name);
 289         if (ret)
 290                 goto error;
 291         ret = ioctl(sock, req, ifr);
 292         if (ret == -1) {
 293                 rte_errno = errno;
 294                 goto error;
 295         }
 296         close(sock);
 297         return 0;
 298 error:
 299         close(sock);
 300         return -rte_errno;
 301 }
 302
 303 /**
 304  * Get device MTU.
 305  *
 306  * @param dev
 307  *   Pointer to Ethernet device.
 308  * @param[out] mtu
 309  *   MTU value output buffer.
 310  *
 311  * @return
 312  *   0 on success, a negative errno value otherwise and rte_errno is set.
 313  */
 314 int
 315 mlx5_get_mtu(struct rte_eth_dev *dev, uint16_t *mtu)
 316 {
 317         struct ifreq request;
 318         int ret = mlx5_ifreq(dev, SIOCGIFMTU, &request);
 319
 320         if (ret)
 321                 return ret;
 322         *mtu = request.ifr_mtu;
 323         return 0;
 324 }
 325
 326 /**
 327  * Set device MTU.
 328  *
 329  * @param dev
 330  *   Pointer to Ethernet device.
 331  * @param mtu
 332  *   MTU value to set.
 333  *
 334  * @return
 335  *   0 on success, a negative errno value otherwise and rte_errno is set.
 336  */
 337 static int
 338 mlx5_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 339 {
 340         struct ifreq request = { .ifr_mtu = mtu, };
 341
 342         return mlx5_ifreq(dev, SIOCSIFMTU, &request);
 343 }
 344
 345 /**
 346  * Set device flags.
 347  *
 348  * @param dev
 349  *   Pointer to Ethernet device.
 350  * @param keep
 351  *   Bitmask for flags that must remain untouched.
 352  * @param flags
 353  *   Bitmask for flags to modify.
 354  *
 355  * @return
 356  *   0 on success, a negative errno value otherwise and rte_errno is set.
 357  */
 358 int
 359 mlx5_set_flags(struct rte_eth_dev *dev, unsigned int keep, unsigned int flags)
 360 {
 361         struct ifreq request;
 362         int ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &request);
 363
 364         if (ret)
 365                 return ret;
 366         request.ifr_flags &= keep;
 367         request.ifr_flags |= flags & ~keep;
 368         return mlx5_ifreq(dev, SIOCSIFFLAGS, &request);
 369 }
 370
 371 /**
 372  * DPDK callback for Ethernet device configuration.
 373  *
 374  * @param dev
 375  *   Pointer to Ethernet device structure.
 376  *
 377  * @return
 378  *   0 on success, a negative errno value otherwise and rte_errno is set.
 379  */
 380 int
 381 mlx5_dev_configure(struct rte_eth_dev *dev)
 382 {
 383         struct mlx5_priv *priv = dev->data->dev_private;
 384         unsigned int rxqs_n = dev->data->nb_rx_queues;
 385         unsigned int txqs_n = dev->data->nb_tx_queues;
 386         const uint8_t use_app_rss_key =
 387                 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
 388         int ret = 0;
 389
 390         if (use_app_rss_key &&
 391             (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
 392              MLX5_RSS_HASH_KEY_LEN)) {
 393                 DRV_LOG(ERR, "port %u RSS key len must be %s Bytes long",
 394                         dev->data->port_id, RTE_STR(MLX5_RSS_HASH_KEY_LEN));
 395                 rte_errno = EINVAL;
 396                 return -rte_errno;
 397         }
 398         priv->rss_conf.rss_key =
 399                 rte_realloc(priv->rss_conf.rss_key,
 400                             MLX5_RSS_HASH_KEY_LEN, 0);
 401         if (!priv->rss_conf.rss_key) {
 402                 DRV_LOG(ERR, "port %u cannot allocate RSS hash key memory (%u)",
 403                         dev->data->port_id, rxqs_n);
 404                 rte_errno = ENOMEM;
 405                 return -rte_errno;
 406         }
 407         memcpy(priv->rss_conf.rss_key,
 408                use_app_rss_key ?
 409                dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
 410                rss_hash_default_key,
 411                MLX5_RSS_HASH_KEY_LEN);
 412         priv->rss_conf.rss_key_len = MLX5_RSS_HASH_KEY_LEN;
 413         priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
 414         priv->rxqs = (void *)dev->data->rx_queues;
 415         priv->txqs = (void *)dev->data->tx_queues;
 416         if (txqs_n != priv->txqs_n) {
 417                 DRV_LOG(INFO, "port %u Tx queues number update: %u -> %u",
 418                         dev->data->port_id, priv->txqs_n, txqs_n);
 419                 priv->txqs_n = txqs_n;
 420         }
 421         if (rxqs_n > priv->config.ind_table_max_size) {
 422                 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)",
 423                         dev->data->port_id, rxqs_n);
 424                 rte_errno = EINVAL;
 425                 return -rte_errno;
 426         }
 427         if (rxqs_n != priv->rxqs_n) {
 428                 DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u",
 429                         dev->data->port_id, priv->rxqs_n, rxqs_n);
 430                 priv->rxqs_n = rxqs_n;
 431         }
 432         priv->skip_default_rss_reta = 0;
 433         ret = mlx5_proc_priv_init(dev);
 434         if (ret)
 435                 return ret;
 436         return 0;
 437 }
 438
 439 /**
 440  * Configure default RSS reta.
 441  *
 442  * @param dev
 443  *   Pointer to Ethernet device structure.
 444  *
 445  * @return
 446  *   0 on success, a negative errno value otherwise and rte_errno is set.
 447  */
 448 int
 449 mlx5_dev_configure_rss_reta(struct rte_eth_dev *dev)
 450 {
 451         struct mlx5_priv *priv = dev->data->dev_private;
 452         unsigned int rxqs_n = dev->data->nb_rx_queues;
 453         unsigned int i;
 454         unsigned int j;
 455         unsigned int reta_idx_n;
 456         int ret = 0;
 457         unsigned int *rss_queue_arr = NULL;
 458         unsigned int rss_queue_n = 0;
 459
 460         if (priv->skip_default_rss_reta)
 461                 return ret;
 462         rss_queue_arr = rte_malloc("", rxqs_n * sizeof(unsigned int), 0);
 463         if (!rss_queue_arr) {
 464                 DRV_LOG(ERR, "port %u cannot allocate RSS queue list (%u)",
 465                         dev->data->port_id, rxqs_n);
 466                 rte_errno = ENOMEM;
 467                 return -rte_errno;
 468         }
 469         for (i = 0, j = 0; i < rxqs_n; i++) {
 470                 struct mlx5_rxq_data *rxq_data;
 471                 struct mlx5_rxq_ctrl *rxq_ctrl;
 472
 473                 rxq_data = (*priv->rxqs)[i];
 474                 rxq_ctrl = container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
 475                 if (rxq_ctrl->type == MLX5_RXQ_TYPE_STANDARD)
 476                         rss_queue_arr[j++] = i;
 477         }
 478         rss_queue_n = j;
 479         if (rss_queue_n > priv->config.ind_table_max_size) {
 480                 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)",
 481                         dev->data->port_id, rss_queue_n);
 482                 rte_errno = EINVAL;
 483                 rte_free(rss_queue_arr);
 484                 return -rte_errno;
 485         }
 486         DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u",
 487                 dev->data->port_id, priv->rxqs_n, rxqs_n);
 488         priv->rxqs_n = rxqs_n;
 489         /*
 490          * If the requested number of RX queues is not a power of two,
 491          * use the maximum indirection table size for better balancing.
 492          * The result is always rounded to the next power of two.
 493          */
 494         reta_idx_n = (1 << log2above((rss_queue_n & (rss_queue_n - 1)) ?
 495                                 priv->config.ind_table_max_size :
 496                                 rss_queue_n));
 497         ret = mlx5_rss_reta_index_resize(dev, reta_idx_n);
 498         if (ret) {
 499                 rte_free(rss_queue_arr);
 500                 return ret;
 501         }
 502         /*
 503          * When the number of RX queues is not a power of two,
 504          * the remaining table entries are padded with reused WQs
 505          * and hashes are not spread uniformly.
 506          */
 507         for (i = 0, j = 0; (i != reta_idx_n); ++i) {
 508                 (*priv->reta_idx)[i] = rss_queue_arr[j];
 509                 if (++j == rss_queue_n)
 510                         j = 0;
 511         }
 512         rte_free(rss_queue_arr);
 513         return ret;
 514 }
 515
 516 /**
 517  * Sets default tuning parameters.
 518  *
 519  * @param dev
 520  *   Pointer to Ethernet device.
 521  * @param[out] info
 522  *   Info structure output buffer.
 523  */
 524 static void
 525 mlx5_set_default_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 526 {
 527         struct mlx5_priv *priv = dev->data->dev_private;
 528
 529         /* Minimum CPU utilization. */
 530         info->default_rxportconf.ring_size = 256;
 531         info->default_txportconf.ring_size = 256;
 532         info->default_rxportconf.burst_size = 64;
 533         info->default_txportconf.burst_size = 64;
 534         if (priv->link_speed_capa & ETH_LINK_SPEED_100G) {
 535                 info->default_rxportconf.nb_queues = 16;
 536                 info->default_txportconf.nb_queues = 16;
 537                 if (dev->data->nb_rx_queues > 2 ||
 538                     dev->data->nb_tx_queues > 2) {
 539                         /* Max Throughput. */
 540                         info->default_rxportconf.ring_size = 2048;
 541                         info->default_txportconf.ring_size = 2048;
 542                 }
 543         } else {
 544                 info->default_rxportconf.nb_queues = 8;
 545                 info->default_txportconf.nb_queues = 8;
 546                 if (dev->data->nb_rx_queues > 2 ||
 547                     dev->data->nb_tx_queues > 2) {
 548                         /* Max Throughput. */
 549                         info->default_rxportconf.ring_size = 4096;
 550                         info->default_txportconf.ring_size = 4096;
 551                 }
 552         }
 553 }
 554
 555 /**
 556  * Sets tx mbuf limiting parameters.
 557  *
 558  * @param dev
 559  *   Pointer to Ethernet device.
 560  * @param[out] info
 561  *   Info structure output buffer.
 562  */
 563 static void
 564 mlx5_set_txlimit_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 565 {
 566         struct mlx5_priv *priv = dev->data->dev_private;
 567         struct mlx5_dev_config *config = &priv->config;
 568         unsigned int inlen;
 569         uint16_t nb_max;
 570
 571         inlen = (config->txq_inline_max == MLX5_ARG_UNSET) ?
 572                 MLX5_SEND_DEF_INLINE_LEN :
 573                 (unsigned int)config->txq_inline_max;
 574         assert(config->txq_inline_min >= 0);
 575         inlen = RTE_MAX(inlen, (unsigned int)config->txq_inline_min);
 576         inlen = RTE_MIN(inlen, MLX5_WQE_SIZE_MAX +
 577                                MLX5_ESEG_MIN_INLINE_SIZE -
 578                                MLX5_WQE_CSEG_SIZE -
 579                                MLX5_WQE_ESEG_SIZE -
 580                                MLX5_WQE_DSEG_SIZE * 2);
 581         nb_max = (MLX5_WQE_SIZE_MAX +
 582                   MLX5_ESEG_MIN_INLINE_SIZE -
 583                   MLX5_WQE_CSEG_SIZE -
 584                   MLX5_WQE_ESEG_SIZE -
 585                   MLX5_WQE_DSEG_SIZE -
 586                   inlen) / MLX5_WSEG_SIZE;
 587         info->tx_desc_lim.nb_seg_max = nb_max;
 588         info->tx_desc_lim.nb_mtu_seg_max = nb_max;
 589 }
 590
 591 /**
 592  * DPDK callback to get information about the device.
 593  *
 594  * @param dev
 595  *   Pointer to Ethernet device structure.
 596  * @param[out] info
 597  *   Info structure output buffer.
 598  */
 599 int
 600 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 601 {
 602         struct mlx5_priv *priv = dev->data->dev_private;
 603         struct mlx5_dev_config *config = &priv->config;
 604         unsigned int max;
 605
 606         /* FIXME: we should ask the device for these values. */
 607         info->min_rx_bufsize = 32;
 608         info->max_rx_pktlen = 65536;
 609         /*
 610          * Since we need one CQ per QP, the limit is the minimum number
 611          * between the two values.
 612          */
 613         max = RTE_MIN(priv->sh->device_attr.orig_attr.max_cq,
 614                       priv->sh->device_attr.orig_attr.max_qp);
 615         /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
 616         if (max >= 65535)
 617                 max = 65535;
 618         info->max_rx_queues = max;
 619         info->max_tx_queues = max;
 620         info->max_mac_addrs = MLX5_MAX_UC_MAC_ADDRESSES;
 621         info->rx_queue_offload_capa = mlx5_get_rx_queue_offloads(dev);
 622         info->rx_offload_capa = (mlx5_get_rx_port_offloads() |
 623                                  info->rx_queue_offload_capa);
 624         info->tx_offload_capa = mlx5_get_tx_port_offloads(dev);
 625         info->if_index = mlx5_ifindex(dev);
 626         info->reta_size = priv->reta_idx_n ?
 627                 priv->reta_idx_n : config->ind_table_max_size;
 628         info->hash_key_size = MLX5_RSS_HASH_KEY_LEN;
 629         info->speed_capa = priv->link_speed_capa;
 630         info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK;
 631         mlx5_set_default_params(dev, info);
 632         mlx5_set_txlimit_params(dev, info);
 633         info->switch_info.name = dev->data->name;
 634         info->switch_info.domain_id = priv->domain_id;
 635         info->switch_info.port_id = priv->representor_id;
 636         if (priv->representor) {
 637                 uint16_t port_id;
 638
 639                 if (priv->pf_bond >= 0) {
 640                         /*
 641                          * Switch port ID is opaque value with driver defined
 642                          * format. Push the PF index in bonding configurations
 643                          * in upper four bits of port ID. If we get too many
 644                          * representors (more than 4K) or PFs (more than 15)
 645                          * this approach must be reconsidered.
 646                          */
 647                         if ((info->switch_info.port_id >>
 648                                 MLX5_PORT_ID_BONDING_PF_SHIFT) ||
 649                             priv->pf_bond > MLX5_PORT_ID_BONDING_PF_MASK) {
 650                                 DRV_LOG(ERR, "can't update switch port ID"
 651                                              " for bonding device");
 652                                 assert(false);
 653                                 return -ENODEV;
 654                         }
 655                         info->switch_info.port_id |=
 656                                 priv->pf_bond << MLX5_PORT_ID_BONDING_PF_SHIFT;
 657                 }
 658                 MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) {
 659                         struct mlx5_priv *opriv =
 660                                 rte_eth_devices[port_id].data->dev_private;
 661
 662                         if (!opriv ||
 663                             opriv->representor ||
 664                             opriv->sh != priv->sh ||
 665                             opriv->domain_id != priv->domain_id)
 666                                 continue;
 667                         /*
 668                          * Override switch name with that of the master
 669                          * device.
 670                          */
 671                         info->switch_info.name = opriv->dev_data->name;
 672                         break;
 673                 }
 674         }
 675         return 0;
 676 }
 677
 678 /**
 679  * Get device current raw clock counter
 680  *
 681  * @param dev
 682  *   Pointer to Ethernet device structure.
 683  * @param[out] time
 684  *   Current raw clock counter of the device.
 685  *
 686  * @return
 687  *   0 if the clock has correctly been read
 688  *   The value of errno in case of error
 689  */
 690 int
 691 mlx5_read_clock(struct rte_eth_dev *dev, uint64_t *clock)
 692 {
 693         struct mlx5_priv *priv = dev->data->dev_private;
 694         struct ibv_context *ctx = priv->sh->ctx;
 695         struct ibv_values_ex values;
 696         int err = 0;
 697
 698         values.comp_mask = IBV_VALUES_MASK_RAW_CLOCK;
 699         err = mlx5_glue->query_rt_values_ex(ctx, &values);
 700         if (err != 0) {
 701                 DRV_LOG(WARNING, "Could not query the clock !");
 702                 return err;
 703         }
 704         *clock = values.raw_clock.tv_nsec;
 705         return 0;
 706 }
 707
 708 /**
 709  * Get firmware version of a device.
 710  *
 711  * @param dev
 712  *   Ethernet device port.
 713  * @param fw_ver
 714  *   String output allocated by caller.
 715  * @param fw_size
 716  *   Size of the output string, including terminating null byte.
 717  *
 718  * @return
 719  *   0 on success, or the size of the non truncated string if too big.
 720  */
 721 int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size)
 722 {
 723         struct mlx5_priv *priv = dev->data->dev_private;
 724         struct ibv_device_attr *attr = &priv->sh->device_attr.orig_attr;
 725         size_t size = strnlen(attr->fw_ver, sizeof(attr->fw_ver)) + 1;
 726
 727         if (fw_size < size)
 728                 return size;
 729         if (fw_ver != NULL)
 730                 strlcpy(fw_ver, attr->fw_ver, fw_size);
 731         return 0;
 732 }
 733
 734 /**
 735  * Get supported packet types.
 736  *
 737  * @param dev
 738  *   Pointer to Ethernet device structure.
 739  *
 740  * @return
 741  *   A pointer to the supported Packet types array.
 742  */
 743 const uint32_t *
 744 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 745 {
 746         static const uint32_t ptypes[] = {
 747                 /* refers to rxq_cq_to_pkt_type() */
 748                 RTE_PTYPE_L2_ETHER,
 749                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 750                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 751                 RTE_PTYPE_L4_NONFRAG,
 752                 RTE_PTYPE_L4_FRAG,
 753                 RTE_PTYPE_L4_TCP,
 754                 RTE_PTYPE_L4_UDP,
 755                 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
 756                 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
 757                 RTE_PTYPE_INNER_L4_NONFRAG,
 758                 RTE_PTYPE_INNER_L4_FRAG,
 759                 RTE_PTYPE_INNER_L4_TCP,
 760                 RTE_PTYPE_INNER_L4_UDP,
 761                 RTE_PTYPE_UNKNOWN
 762         };
 763
 764         if (dev->rx_pkt_burst == mlx5_rx_burst ||
 765             dev->rx_pkt_burst == mlx5_rx_burst_mprq ||
 766             dev->rx_pkt_burst == mlx5_rx_burst_vec)
 767                 return ptypes;
 768         return NULL;
 769 }
 770
 771 /**
 772  * Retrieve the master device for representor in the same switch domain.
 773  *
 774  * @param dev
 775  *   Pointer to representor Ethernet device structure.
 776  *
 777  * @return
 778  *   Master device structure  on success, NULL otherwise.
 779  */
 780
 781 static struct rte_eth_dev *
 782 mlx5_find_master_dev(struct rte_eth_dev *dev)
 783 {
 784         struct mlx5_priv *priv;
 785         uint16_t port_id;
 786         uint16_t domain_id;
 787
 788         priv = dev->data->dev_private;
 789         domain_id = priv->domain_id;
 790         assert(priv->representor);
 791         MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) {
 792                 struct mlx5_priv *opriv =
 793                         rte_eth_devices[port_id].data->dev_private;
 794                 if (opriv &&
 795                     opriv->master &&
 796                     opriv->domain_id == domain_id &&
 797                     opriv->sh == priv->sh)
 798                         return &rte_eth_devices[port_id];
 799         }
 800         return NULL;
 801 }
 802
 803 /**
 804  * DPDK callback to retrieve physical link information.
 805  *
 806  * @param dev
 807  *   Pointer to Ethernet device structure.
 808  * @param[out] link
 809  *   Storage for current link status.
 810  *
 811  * @return
 812  *   0 on success, a negative errno value otherwise and rte_errno is set.
 813  */
 814 static int
 815 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev,
 816                                struct rte_eth_link *link)
 817 {
 818         struct mlx5_priv *priv = dev->data->dev_private;
 819         struct ethtool_cmd edata = {
 820                 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
 821         };
 822         struct ifreq ifr;
 823         struct rte_eth_link dev_link;
 824         int link_speed = 0;
 825         int ret;
 826
 827         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
 828         if (ret) {
 829                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
 830                         dev->data->port_id, strerror(rte_errno));
 831                 return ret;
 832         }
 833         dev_link = (struct rte_eth_link) {
 834                 .link_status = ((ifr.ifr_flags & IFF_UP) &&
 835                                 (ifr.ifr_flags & IFF_RUNNING)),
 836         };
 837         ifr = (struct ifreq) {
 838                 .ifr_data = (void *)&edata,
 839         };
 840         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 841         if (ret) {
 842                 if (ret == -ENOTSUP && priv->representor) {
 843                         struct rte_eth_dev *master;
 844
 845                         /*
 846                          * For representors we can try to inherit link
 847                          * settings from the master device. Actually
 848                          * link settings do not make a lot of sense
 849                          * for representors due to missing physical
 850                          * link. The old kernel drivers supported
 851                          * emulated settings query for representors,
 852                          * the new ones do not, so we have to add
 853                          * this code for compatibility issues.
 854                          */
 855                         master = mlx5_find_master_dev(dev);
 856                         if (master) {
 857                                 ifr = (struct ifreq) {
 858                                         .ifr_data = (void *)&edata,
 859                                 };
 860                                 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr);
 861                         }
 862                 }
 863                 if (ret) {
 864                         DRV_LOG(WARNING,
 865                                 "port %u ioctl(SIOCETHTOOL,"
 866                                 " ETHTOOL_GSET) failed: %s",
 867                                 dev->data->port_id, strerror(rte_errno));
 868                         return ret;
 869                 }
 870         }
 871         link_speed = ethtool_cmd_speed(&edata);
 872         if (link_speed == -1)
 873                 dev_link.link_speed = ETH_SPEED_NUM_NONE;
 874         else
 875                 dev_link.link_speed = link_speed;
 876         priv->link_speed_capa = 0;
 877         if (edata.supported & SUPPORTED_Autoneg)
 878                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 879         if (edata.supported & (SUPPORTED_1000baseT_Full |
 880                                SUPPORTED_1000baseKX_Full))
 881                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 882         if (edata.supported & SUPPORTED_10000baseKR_Full)
 883                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 884         if (edata.supported & (SUPPORTED_40000baseKR4_Full |
 885                                SUPPORTED_40000baseCR4_Full |
 886                                SUPPORTED_40000baseSR4_Full |
 887                                SUPPORTED_40000baseLR4_Full))
 888                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 889         dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
 890                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 891         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 892                         ETH_LINK_SPEED_FIXED);
 893         if (((dev_link.link_speed && !dev_link.link_status) ||
 894              (!dev_link.link_speed && dev_link.link_status))) {
 895                 rte_errno = EAGAIN;
 896                 return -rte_errno;
 897         }
 898         *link = dev_link;
 899         return 0;
 900 }
 901
 902 /**
 903  * Retrieve physical link information (unlocked version using new ioctl).
 904  *
 905  * @param dev
 906  *   Pointer to Ethernet device structure.
 907  * @param[out] link
 908  *   Storage for current link status.
 909  *
 910  * @return
 911  *   0 on success, a negative errno value otherwise and rte_errno is set.
 912  */
 913 static int
 914 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev,
 915                              struct rte_eth_link *link)
 916
 917 {
 918         struct mlx5_priv *priv = dev->data->dev_private;
 919         struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
 920         struct ifreq ifr;
 921         struct rte_eth_link dev_link;
 922         struct rte_eth_dev *master = NULL;
 923         uint64_t sc;
 924         int ret;
 925
 926         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
 927         if (ret) {
 928                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
 929                         dev->data->port_id, strerror(rte_errno));
 930                 return ret;
 931         }
 932         dev_link = (struct rte_eth_link) {
 933                 .link_status = ((ifr.ifr_flags & IFF_UP) &&
 934                                 (ifr.ifr_flags & IFF_RUNNING)),
 935         };
 936         ifr = (struct ifreq) {
 937                 .ifr_data = (void *)&gcmd,
 938         };
 939         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 940         if (ret) {
 941                 if (ret == -ENOTSUP && priv->representor) {
 942                         /*
 943                          * For representors we can try to inherit link
 944                          * settings from the master device. Actually
 945                          * link settings do not make a lot of sense
 946                          * for representors due to missing physical
 947                          * link. The old kernel drivers supported
 948                          * emulated settings query for representors,
 949                          * the new ones do not, so we have to add
 950                          * this code for compatibility issues.
 951                          */
 952                         master = mlx5_find_master_dev(dev);
 953                         if (master) {
 954                                 ifr = (struct ifreq) {
 955                                         .ifr_data = (void *)&gcmd,
 956                                 };
 957                                 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr);
 958                         }
 959                 }
 960                 if (ret) {
 961                         DRV_LOG(DEBUG,
 962                                 "port %u ioctl(SIOCETHTOOL,"
 963                                 " ETHTOOL_GLINKSETTINGS) failed: %s",
 964                                 dev->data->port_id, strerror(rte_errno));
 965                         return ret;
 966                 }
 967
 968         }
 969         gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
 970
 971         alignas(struct ethtool_link_settings)
 972         uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
 973                      sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
 974         struct ethtool_link_settings *ecmd = (void *)data;
 975
 976         *ecmd = gcmd;
 977         ifr.ifr_data = (void *)ecmd;
 978         ret = mlx5_ifreq(master ? master : dev, SIOCETHTOOL, &ifr);
 979         if (ret) {
 980                 DRV_LOG(DEBUG,
 981                         "port %u ioctl(SIOCETHTOOL,"
 982                         "ETHTOOL_GLINKSETTINGS) failed: %s",
 983                         dev->data->port_id, strerror(rte_errno));
 984                 return ret;
 985         }
 986         dev_link.link_speed = (ecmd->speed == UINT32_MAX) ? ETH_SPEED_NUM_NONE :
 987                                                             ecmd->speed;
 988         sc = ecmd->link_mode_masks[0] |
 989                 ((uint64_t)ecmd->link_mode_masks[1] << 32);
 990         priv->link_speed_capa = 0;
 991         if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
 992                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 993         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
 994                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
 995                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 996         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
 997                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
 998                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
 999                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
1000         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
1001                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
1002                 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
1003         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
1004                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
1005                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
1006                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
1007                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
1008         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
1009                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
1010                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
1011                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
1012                 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
1013         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
1014                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
1015                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
1016                 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
1017         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
1018                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
1019                 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
1020         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
1021                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
1022                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
1023                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
1024                 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
1025         dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
1026                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
1027         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
1028                                   ETH_LINK_SPEED_FIXED);
1029         if (((dev_link.link_speed && !dev_link.link_status) ||
1030              (!dev_link.link_speed && dev_link.link_status))) {
1031                 rte_errno = EAGAIN;
1032                 return -rte_errno;
1033         }
1034         *link = dev_link;
1035         return 0;
1036 }
1037
1038 /**
1039  * DPDK callback to retrieve physical link information.
1040  *
1041  * @param dev
1042  *   Pointer to Ethernet device structure.
1043  * @param wait_to_complete
1044  *   Wait for request completion.
1045  *
1046  * @return
1047  *   0 if link status was not updated, positive if it was, a negative errno
1048  *   value otherwise and rte_errno is set.
1049  */
1050 int
1051 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
1052 {
1053         int ret;
1054         struct rte_eth_link dev_link;
1055         time_t start_time = time(NULL);
1056         int retry = MLX5_GET_LINK_STATUS_RETRY_COUNT;
1057
1058         do {
1059                 ret = mlx5_link_update_unlocked_gs(dev, &dev_link);
1060                 if (ret == -ENOTSUP)
1061                         ret = mlx5_link_update_unlocked_gset(dev, &dev_link);
1062                 if (ret == 0)
1063                         break;
1064                 /* Handle wait to complete situation. */
1065                 if ((wait_to_complete || retry) && ret == -EAGAIN) {
1066                         if (abs((int)difftime(time(NULL), start_time)) <
1067                             MLX5_LINK_STATUS_TIMEOUT) {
1068                                 usleep(0);
1069                                 continue;
1070                         } else {
1071                                 rte_errno = EBUSY;
1072                                 return -rte_errno;
1073                         }
1074                 } else if (ret < 0) {
1075                         return ret;
1076                 }
1077         } while (wait_to_complete || retry-- > 0);
1078         ret = !!memcmp(&dev->data->dev_link, &dev_link,
1079                        sizeof(struct rte_eth_link));
1080         dev->data->dev_link = dev_link;
1081         return ret;
1082 }
1083
1084 /**
1085  * DPDK callback to change the MTU.
1086  *
1087  * @param dev
1088  *   Pointer to Ethernet device structure.
1089  * @param in_mtu
1090  *   New MTU.
1091  *
1092  * @return
1093  *   0 on success, a negative errno value otherwise and rte_errno is set.
1094  */
1095 int
1096 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
1097 {
1098         struct mlx5_priv *priv = dev->data->dev_private;
1099         uint16_t kern_mtu = 0;
1100         int ret;
1101
1102         ret = mlx5_get_mtu(dev, &kern_mtu);
1103         if (ret)
1104                 return ret;
1105         /* Set kernel interface MTU first. */
1106         ret = mlx5_set_mtu(dev, mtu);
1107         if (ret)
1108                 return ret;
1109         ret = mlx5_get_mtu(dev, &kern_mtu);
1110         if (ret)
1111                 return ret;
1112         if (kern_mtu == mtu) {
1113                 priv->mtu = mtu;
1114                 DRV_LOG(DEBUG, "port %u adapter MTU set to %u",
1115                         dev->data->port_id, mtu);
1116                 return 0;
1117         }
1118         rte_errno = EAGAIN;
1119         return -rte_errno;
1120 }
1121
1122 /**
1123  * DPDK callback to get flow control status.
1124  *
1125  * @param dev
1126  *   Pointer to Ethernet device structure.
1127  * @param[out] fc_conf
1128  *   Flow control output buffer.
1129  *
1130  * @return
1131  *   0 on success, a negative errno value otherwise and rte_errno is set.
1132  */
1133 int
1134 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1135 {
1136         struct ifreq ifr;
1137         struct ethtool_pauseparam ethpause = {
1138                 .cmd = ETHTOOL_GPAUSEPARAM
1139         };
1140         int ret;
1141
1142         ifr.ifr_data = (void *)&ethpause;
1143         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
1144         if (ret) {
1145                 DRV_LOG(WARNING,
1146                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM) failed:"
1147                         " %s",
1148                         dev->data->port_id, strerror(rte_errno));
1149                 return ret;
1150         }
1151         fc_conf->autoneg = ethpause.autoneg;
1152         if (ethpause.rx_pause && ethpause.tx_pause)
1153                 fc_conf->mode = RTE_FC_FULL;
1154         else if (ethpause.rx_pause)
1155                 fc_conf->mode = RTE_FC_RX_PAUSE;
1156         else if (ethpause.tx_pause)
1157                 fc_conf->mode = RTE_FC_TX_PAUSE;
1158         else
1159                 fc_conf->mode = RTE_FC_NONE;
1160         return 0;
1161 }
1162
1163 /**
1164  * DPDK callback to modify flow control parameters.
1165  *
1166  * @param dev
1167  *   Pointer to Ethernet device structure.
1168  * @param[in] fc_conf
1169  *   Flow control parameters.
1170  *
1171  * @return
1172  *   0 on success, a negative errno value otherwise and rte_errno is set.
1173  */
1174 int
1175 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1176 {
1177         struct ifreq ifr;
1178         struct ethtool_pauseparam ethpause = {
1179                 .cmd = ETHTOOL_SPAUSEPARAM
1180         };
1181         int ret;
1182
1183         ifr.ifr_data = (void *)&ethpause;
1184         ethpause.autoneg = fc_conf->autoneg;
1185         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1186             (fc_conf->mode & RTE_FC_RX_PAUSE))
1187                 ethpause.rx_pause = 1;
1188         else
1189                 ethpause.rx_pause = 0;
1190
1191         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1192             (fc_conf->mode & RTE_FC_TX_PAUSE))
1193                 ethpause.tx_pause = 1;
1194         else
1195                 ethpause.tx_pause = 0;
1196         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
1197         if (ret) {
1198                 DRV_LOG(WARNING,
1199                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
1200                         " failed: %s",
1201                         dev->data->port_id, strerror(rte_errno));
1202                 return ret;
1203         }
1204         return 0;
1205 }
1206
1207 /**
1208  * Get PCI information by sysfs device path.
1209  *
1210  * @param dev_path
1211  *   Pointer to device sysfs folder name.
1212  * @param[out] pci_addr
1213  *   PCI bus address output buffer.
1214  *
1215  * @return
1216  *   0 on success, a negative errno value otherwise and rte_errno is set.
1217  */
1218 int
1219 mlx5_dev_to_pci_addr(const char *dev_path,
1220                      struct rte_pci_addr *pci_addr)
1221 {
1222         FILE *file;
1223         char line[32];
1224         MKSTR(path, "%s/device/uevent", dev_path);
1225
1226         file = fopen(path, "rb");
1227         if (file == NULL) {
1228                 rte_errno = errno;
1229                 return -rte_errno;
1230         }
1231         while (fgets(line, sizeof(line), file) == line) {
1232                 size_t len = strlen(line);
1233                 int ret;
1234
1235                 /* Truncate long lines. */
1236                 if (len == (sizeof(line) - 1))
1237                         while (line[(len - 1)] != '\n') {
1238                                 ret = fgetc(file);
1239                                 if (ret == EOF)
1240                                         break;
1241                                 line[(len - 1)] = ret;
1242                         }
1243                 /* Extract information. */
1244                 if (sscanf(line,
1245                            "PCI_SLOT_NAME="
1246                            "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
1247                            &pci_addr->domain,
1248                            &pci_addr->bus,
1249                            &pci_addr->devid,
1250                            &pci_addr->function) == 4) {
1251                         ret = 0;
1252                         break;
1253                 }
1254         }
1255         fclose(file);
1256         return 0;
1257 }
1258
1259 /**
1260  * Handle asynchronous removal event for entire multiport device.
1261  *
1262  * @param sh
1263  *   Infiniband device shared context.
1264  */
1265 static void
1266 mlx5_dev_interrupt_device_fatal(struct mlx5_ibv_shared *sh)
1267 {
1268         uint32_t i;
1269
1270         for (i = 0; i < sh->max_port; ++i) {
1271                 struct rte_eth_dev *dev;
1272
1273                 if (sh->port[i].ih_port_id >= RTE_MAX_ETHPORTS) {
1274                         /*
1275                          * Or not existing port either no
1276                          * handler installed for this port.
1277                          */
1278                         continue;
1279                 }
1280                 dev = &rte_eth_devices[sh->port[i].ih_port_id];
1281                 assert(dev);
1282                 if (dev->data->dev_conf.intr_conf.rmv)
1283                         _rte_eth_dev_callback_process
1284                                 (dev, RTE_ETH_EVENT_INTR_RMV, NULL);
1285         }
1286 }
1287
1288 /**
1289  * Handle shared asynchronous events the NIC (removal event
1290  * and link status change). Supports multiport IB device.
1291  *
1292  * @param cb_arg
1293  *   Callback argument.
1294  */
1295 void
1296 mlx5_dev_interrupt_handler(void *cb_arg)
1297 {
1298         struct mlx5_ibv_shared *sh = cb_arg;
1299         struct ibv_async_event event;
1300
1301         /* Read all message from the IB device and acknowledge them. */
1302         for (;;) {
1303                 struct rte_eth_dev *dev;
1304                 uint32_t tmp;
1305
1306                 if (mlx5_glue->get_async_event(sh->ctx, &event))
1307                         break;
1308                 /* Retrieve and check IB port index. */
1309                 tmp = (uint32_t)event.element.port_num;
1310                 if (!tmp && event.event_type == IBV_EVENT_DEVICE_FATAL) {
1311                         /*
1312                          * The DEVICE_FATAL event is called once for
1313                          * entire device without port specifying.
1314                          * We should notify all existing ports.
1315                          */
1316                         mlx5_glue->ack_async_event(&event);
1317                         mlx5_dev_interrupt_device_fatal(sh);
1318                         continue;
1319                 }
1320                 assert(tmp && (tmp <= sh->max_port));
1321                 if (!tmp) {
1322                         /* Unsupported devive level event. */
1323                         mlx5_glue->ack_async_event(&event);
1324                         DRV_LOG(DEBUG,
1325                                 "unsupported common event (type %d)",
1326                                 event.event_type);
1327                         continue;
1328                 }
1329                 if (tmp > sh->max_port) {
1330                         /* Invalid IB port index. */
1331                         mlx5_glue->ack_async_event(&event);
1332                         DRV_LOG(DEBUG,
1333                                 "cannot handle an event (type %d)"
1334                                 "due to invalid IB port index (%u)",
1335                                 event.event_type, tmp);
1336                         continue;
1337                 }
1338                 if (sh->port[tmp - 1].ih_port_id >= RTE_MAX_ETHPORTS) {
1339                         /* No handler installed. */
1340                         mlx5_glue->ack_async_event(&event);
1341                         DRV_LOG(DEBUG,
1342                                 "cannot handle an event (type %d)"
1343                                 "due to no handler installed for port %u",
1344                                 event.event_type, tmp);
1345                         continue;
1346                 }
1347                 /* Retrieve ethernet device descriptor. */
1348                 tmp = sh->port[tmp - 1].ih_port_id;
1349                 dev = &rte_eth_devices[tmp];
1350                 assert(dev);
1351                 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
1352                      event.event_type == IBV_EVENT_PORT_ERR) &&
1353                         dev->data->dev_conf.intr_conf.lsc) {
1354                         mlx5_glue->ack_async_event(&event);
1355                         if (mlx5_link_update(dev, 0) == -EAGAIN) {
1356                                 usleep(0);
1357                                 continue;
1358                         }
1359                         _rte_eth_dev_callback_process
1360                                 (dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1361                         continue;
1362                 }
1363                 DRV_LOG(DEBUG,
1364                         "port %u cannot handle an unknown event (type %d)",
1365                         dev->data->port_id, event.event_type);
1366                 mlx5_glue->ack_async_event(&event);
1367         }
1368 }
1369
1370 /*
1371  * Unregister callback handler safely. The handler may be active
1372  * while we are trying to unregister it, in this case code -EAGAIN
1373  * is returned by rte_intr_callback_unregister(). This routine checks
1374  * the return code and tries to unregister handler again.
1375  *
1376  * @param handle
1377  *   interrupt handle
1378  * @param cb_fn
1379  *   pointer to callback routine
1380  * @cb_arg
1381  *   opaque callback parameter
1382  */
1383 void
1384 mlx5_intr_callback_unregister(const struct rte_intr_handle *handle,
1385                               rte_intr_callback_fn cb_fn, void *cb_arg)
1386 {
1387         /*
1388          * Try to reduce timeout management overhead by not calling
1389          * the timer related routines on the first iteration. If the
1390          * unregistering succeeds on first call there will be no
1391          * timer calls at all.
1392          */
1393         uint64_t twait = 0;
1394         uint64_t start = 0;
1395
1396         do {
1397                 int ret;
1398
1399                 ret = rte_intr_callback_unregister(handle, cb_fn, cb_arg);
1400                 if (ret >= 0)
1401                         return;
1402                 if (ret != -EAGAIN) {
1403                         DRV_LOG(INFO, "failed to unregister interrupt"
1404                                       " handler (error: %d)", ret);
1405                         assert(false);
1406                         return;
1407                 }
1408                 if (twait) {
1409                         struct timespec onems;
1410
1411                         /* Wait one millisecond and try again. */
1412                         onems.tv_sec = 0;
1413                         onems.tv_nsec = NS_PER_S / MS_PER_S;
1414                         nanosleep(&onems, 0);
1415                         /* Check whether one second elapsed. */
1416                         if ((rte_get_timer_cycles() - start) <= twait)
1417                                 continue;
1418                 } else {
1419                         /*
1420                          * We get the amount of timer ticks for one second.
1421                          * If this amount elapsed it means we spent one
1422                          * second in waiting. This branch is executed once
1423                          * on first iteration.
1424                          */
1425                         twait = rte_get_timer_hz();
1426                         assert(twait);
1427                 }
1428                 /*
1429                  * Timeout elapsed, show message (once a second) and retry.
1430                  * We have no other acceptable option here, if we ignore
1431                  * the unregistering return code the handler will not
1432                  * be unregistered, fd will be closed and we may get the
1433                  * crush. Hanging and messaging in the loop seems not to be
1434                  * the worst choice.
1435                  */
1436                 DRV_LOG(INFO, "Retrying to unregister interrupt handler");
1437                 start = rte_get_timer_cycles();
1438         } while (true);
1439 }
1440
1441 /**
1442  * Handle DEVX interrupts from the NIC.
1443  * This function is probably called from the DPDK host thread.
1444  *
1445  * @param cb_arg
1446  *   Callback argument.
1447  */
1448 void
1449 mlx5_dev_interrupt_handler_devx(void *cb_arg)
1450 {
1451 #ifndef HAVE_IBV_DEVX_ASYNC
1452         (void)cb_arg;
1453         return;
1454 #else
1455         struct mlx5_ibv_shared *sh = cb_arg;
1456         union {
1457                 struct mlx5dv_devx_async_cmd_hdr cmd_resp;
1458                 uint8_t buf[MLX5_ST_SZ_BYTES(query_flow_counter_out) +
1459                             MLX5_ST_SZ_BYTES(traffic_counter) +
1460                             sizeof(struct mlx5dv_devx_async_cmd_hdr)];
1461         } out;
1462         uint8_t *buf = out.buf + sizeof(out.cmd_resp);
1463
1464         while (!mlx5_glue->devx_get_async_cmd_comp(sh->devx_comp,
1465                                                    &out.cmd_resp,
1466                                                    sizeof(out.buf)))
1467                 mlx5_flow_async_pool_query_handle
1468                         (sh, (uint64_t)out.cmd_resp.wr_id,
1469                          mlx5_devx_get_out_command_status(buf));
1470 #endif /* HAVE_IBV_DEVX_ASYNC */
1471 }
1472
1473 /**
1474  * Uninstall shared asynchronous device events handler.
1475  * This function is implemented to support event sharing
1476  * between multiple ports of single IB device.
1477  *
1478  * @param dev
1479  *   Pointer to Ethernet device.
1480  */
1481 static void
1482 mlx5_dev_shared_handler_uninstall(struct rte_eth_dev *dev)
1483 {
1484         struct mlx5_priv *priv = dev->data->dev_private;
1485         struct mlx5_ibv_shared *sh = priv->sh;
1486
1487         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1488                 return;
1489         pthread_mutex_lock(&sh->intr_mutex);
1490         assert(priv->ibv_port);
1491         assert(priv->ibv_port <= sh->max_port);
1492         assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1493         if (sh->port[priv->ibv_port - 1].ih_port_id >= RTE_MAX_ETHPORTS)
1494                 goto exit;
1495         assert(sh->port[priv->ibv_port - 1].ih_port_id ==
1496                                         (uint32_t)dev->data->port_id);
1497         assert(sh->intr_cnt);
1498         sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS;
1499         if (!sh->intr_cnt || --sh->intr_cnt)
1500                 goto exit;
1501         mlx5_intr_callback_unregister(&sh->intr_handle,
1502                                      mlx5_dev_interrupt_handler, sh);
1503         sh->intr_handle.fd = 0;
1504         sh->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1505 exit:
1506         pthread_mutex_unlock(&sh->intr_mutex);
1507 }
1508
1509 /**
1510  * Uninstall devx shared asynchronous device events handler.
1511  * This function is implemeted to support event sharing
1512  * between multiple ports of single IB device.
1513  *
1514  * @param dev
1515  *   Pointer to Ethernet device.
1516  */
1517 static void
1518 mlx5_dev_shared_handler_devx_uninstall(struct rte_eth_dev *dev)
1519 {
1520         struct mlx5_priv *priv = dev->data->dev_private;
1521         struct mlx5_ibv_shared *sh = priv->sh;
1522
1523         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1524                 return;
1525         pthread_mutex_lock(&sh->intr_mutex);
1526         assert(priv->ibv_port);
1527         assert(priv->ibv_port <= sh->max_port);
1528         assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1529         if (sh->port[priv->ibv_port - 1].devx_ih_port_id >= RTE_MAX_ETHPORTS)
1530                 goto exit;
1531         assert(sh->port[priv->ibv_port - 1].devx_ih_port_id ==
1532                                         (uint32_t)dev->data->port_id);
1533         sh->port[priv->ibv_port - 1].devx_ih_port_id = RTE_MAX_ETHPORTS;
1534         if (!sh->devx_intr_cnt || --sh->devx_intr_cnt)
1535                 goto exit;
1536         if (sh->intr_handle_devx.fd) {
1537                 rte_intr_callback_unregister(&sh->intr_handle_devx,
1538                                              mlx5_dev_interrupt_handler_devx,
1539                                              sh);
1540                 sh->intr_handle_devx.fd = 0;
1541                 sh->intr_handle_devx.type = RTE_INTR_HANDLE_UNKNOWN;
1542         }
1543         if (sh->devx_comp) {
1544                 mlx5_glue->devx_destroy_cmd_comp(sh->devx_comp);
1545                 sh->devx_comp = NULL;
1546         }
1547 exit:
1548         pthread_mutex_unlock(&sh->intr_mutex);
1549 }
1550
1551 /**
1552  * Install shared asynchronous device events handler.
1553  * This function is implemented to support event sharing
1554  * between multiple ports of single IB device.
1555  *
1556  * @param dev
1557  *   Pointer to Ethernet device.
1558  */
1559 static void
1560 mlx5_dev_shared_handler_install(struct rte_eth_dev *dev)
1561 {
1562         struct mlx5_priv *priv = dev->data->dev_private;
1563         struct mlx5_ibv_shared *sh = priv->sh;
1564         int ret;
1565         int flags;
1566
1567         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1568                 return;
1569         pthread_mutex_lock(&sh->intr_mutex);
1570         assert(priv->ibv_port);
1571         assert(priv->ibv_port <= sh->max_port);
1572         assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1573         if (sh->port[priv->ibv_port - 1].ih_port_id < RTE_MAX_ETHPORTS) {
1574                 /* The handler is already installed for this port. */
1575                 assert(sh->intr_cnt);
1576                 goto exit;
1577         }
1578         if (sh->intr_cnt) {
1579                 sh->port[priv->ibv_port - 1].ih_port_id =
1580                                                 (uint32_t)dev->data->port_id;
1581                 sh->intr_cnt++;
1582                 goto exit;
1583         }
1584         /* No shared handler installed. */
1585         assert(sh->ctx->async_fd > 0);
1586         flags = fcntl(sh->ctx->async_fd, F_GETFL);
1587         ret = fcntl(sh->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1588         if (ret) {
1589                 DRV_LOG(INFO, "failed to change file descriptor async event"
1590                         " queue");
1591                 /* Indicate there will be no interrupts. */
1592                 dev->data->dev_conf.intr_conf.lsc = 0;
1593                 dev->data->dev_conf.intr_conf.rmv = 0;
1594         } else {
1595                 sh->intr_handle.fd = sh->ctx->async_fd;
1596                 sh->intr_handle.type = RTE_INTR_HANDLE_EXT;
1597                 rte_intr_callback_register(&sh->intr_handle,
1598                                            mlx5_dev_interrupt_handler, sh);
1599                 sh->intr_cnt++;
1600                 sh->port[priv->ibv_port - 1].ih_port_id =
1601                                                 (uint32_t)dev->data->port_id;
1602         }
1603 exit:
1604         pthread_mutex_unlock(&sh->intr_mutex);
1605 }
1606
1607 /**
1608  * Install devx shared asyncronous device events handler.
1609  * This function is implemeted to support event sharing
1610  * between multiple ports of single IB device.
1611  *
1612  * @param dev
1613  *   Pointer to Ethernet device.
1614  */
1615 static void
1616 mlx5_dev_shared_handler_devx_install(struct rte_eth_dev *dev)
1617 {
1618         struct mlx5_priv *priv = dev->data->dev_private;
1619         struct mlx5_ibv_shared *sh = priv->sh;
1620
1621         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1622                 return;
1623         pthread_mutex_lock(&sh->intr_mutex);
1624         assert(priv->ibv_port);
1625         assert(priv->ibv_port <= sh->max_port);
1626         assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1627         if (sh->port[priv->ibv_port - 1].devx_ih_port_id < RTE_MAX_ETHPORTS) {
1628                 /* The handler is already installed for this port. */
1629                 assert(sh->devx_intr_cnt);
1630                 goto exit;
1631         }
1632         if (sh->devx_intr_cnt) {
1633                 sh->devx_intr_cnt++;
1634                 sh->port[priv->ibv_port - 1].devx_ih_port_id =
1635                                         (uint32_t)dev->data->port_id;
1636                 goto exit;
1637         }
1638         if (priv->config.devx) {
1639 #ifndef HAVE_IBV_DEVX_ASYNC
1640                 goto exit;
1641 #else
1642                 sh->devx_comp = mlx5_glue->devx_create_cmd_comp(sh->ctx);
1643                 if (sh->devx_comp) {
1644                         int flags = fcntl(sh->devx_comp->fd, F_GETFL);
1645                         int ret = fcntl(sh->devx_comp->fd, F_SETFL,
1646                                     flags | O_NONBLOCK);
1647
1648                         if (ret) {
1649                                 DRV_LOG(INFO, "failed to change file descriptor"
1650                                         " devx async event queue");
1651                         } else {
1652                                 sh->intr_handle_devx.fd = sh->devx_comp->fd;
1653                                 sh->intr_handle_devx.type = RTE_INTR_HANDLE_EXT;
1654                                 rte_intr_callback_register
1655                                         (&sh->intr_handle_devx,
1656                                          mlx5_dev_interrupt_handler_devx, sh);
1657                                 sh->devx_intr_cnt++;
1658                                 sh->port[priv->ibv_port - 1].devx_ih_port_id =
1659                                                 (uint32_t)dev->data->port_id;
1660                         }
1661                 }
1662 #endif /* HAVE_IBV_DEVX_ASYNC */
1663         }
1664 exit:
1665         pthread_mutex_unlock(&sh->intr_mutex);
1666 }
1667
1668 /**
1669  * Uninstall interrupt handler.
1670  *
1671  * @param dev
1672  *   Pointer to Ethernet device.
1673  */
1674 void
1675 mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev)
1676 {
1677         mlx5_dev_shared_handler_uninstall(dev);
1678 }
1679
1680 /**
1681  * Install interrupt handler.
1682  *
1683  * @param dev
1684  *   Pointer to Ethernet device.
1685  */
1686 void
1687 mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev)
1688 {
1689         mlx5_dev_shared_handler_install(dev);
1690 }
1691
1692 /**
1693  * Devx uninstall interrupt handler.
1694  *
1695  * @param dev
1696  *   Pointer to Ethernet device.
1697  */
1698 void
1699 mlx5_dev_interrupt_handler_devx_uninstall(struct rte_eth_dev *dev)
1700 {
1701         mlx5_dev_shared_handler_devx_uninstall(dev);
1702 }
1703
1704 /**
1705  * Devx install interrupt handler.
1706  *
1707  * @param dev
1708  *   Pointer to Ethernet device.
1709  */
1710 void
1711 mlx5_dev_interrupt_handler_devx_install(struct rte_eth_dev *dev)
1712 {
1713         mlx5_dev_shared_handler_devx_install(dev);
1714 }
1715
1716 /**
1717  * DPDK callback to bring the link DOWN.
1718  *
1719  * @param dev
1720  *   Pointer to Ethernet device structure.
1721  *
1722  * @return
1723  *   0 on success, a negative errno value otherwise and rte_errno is set.
1724  */
1725 int
1726 mlx5_set_link_down(struct rte_eth_dev *dev)
1727 {
1728         return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP);
1729 }
1730
1731 /**
1732  * DPDK callback to bring the link UP.
1733  *
1734  * @param dev
1735  *   Pointer to Ethernet device structure.
1736  *
1737  * @return
1738  *   0 on success, a negative errno value otherwise and rte_errno is set.
1739  */
1740 int
1741 mlx5_set_link_up(struct rte_eth_dev *dev)
1742 {
1743         return mlx5_set_flags(dev, ~IFF_UP, IFF_UP);
1744 }
1745
1746 /**
1747  * Configure the RX function to use.
1748  *
1749  * @param dev
1750  *   Pointer to private data structure.
1751  *
1752  * @return
1753  *   Pointer to selected Rx burst function.
1754  */
1755 eth_rx_burst_t
1756 mlx5_select_rx_function(struct rte_eth_dev *dev)
1757 {
1758         eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
1759
1760         assert(dev != NULL);
1761         if (mlx5_check_vec_rx_support(dev) > 0) {
1762                 rx_pkt_burst = mlx5_rx_burst_vec;
1763                 DRV_LOG(DEBUG, "port %u selected Rx vectorized function",
1764                         dev->data->port_id);
1765         } else if (mlx5_mprq_enabled(dev)) {
1766                 rx_pkt_burst = mlx5_rx_burst_mprq;
1767         }
1768         return rx_pkt_burst;
1769 }
1770
1771 /**
1772  * Check if mlx5 device was removed.
1773  *
1774  * @param dev
1775  *   Pointer to Ethernet device structure.
1776  *
1777  * @return
1778  *   1 when device is removed, otherwise 0.
1779  */
1780 int
1781 mlx5_is_removed(struct rte_eth_dev *dev)
1782 {
1783         struct ibv_device_attr device_attr;
1784         struct mlx5_priv *priv = dev->data->dev_private;
1785
1786         if (mlx5_glue->query_device(priv->sh->ctx, &device_attr) == EIO)
1787                 return 1;
1788         return 0;
1789 }
1790
1791 /**
1792  * Get the E-Switch parameters by port id.
1793  *
1794  * @param[in] port
1795  *   Device port id.
1796  * @param[in] valid
1797  *   Device port id is valid, skip check. This flag is useful
1798  *   when trials are performed from probing and device is not
1799  *   flagged as valid yet (in attaching process).
1800  * @param[out] es_domain_id
1801  *   E-Switch domain id.
1802  * @param[out] es_port_id
1803  *   The port id of the port in the E-Switch.
1804  *
1805  * @return
1806  *   pointer to device private data structure containing data needed
1807  *   on success, NULL otherwise and rte_errno is set.
1808  */
1809 struct mlx5_priv *
1810 mlx5_port_to_eswitch_info(uint16_t port, bool valid)
1811 {
1812         struct rte_eth_dev *dev;
1813         struct mlx5_priv *priv;
1814
1815         if (port >= RTE_MAX_ETHPORTS) {
1816                 rte_errno = EINVAL;
1817                 return NULL;
1818         }
1819         if (!valid && !rte_eth_dev_is_valid_port(port)) {
1820                 rte_errno = ENODEV;
1821                 return NULL;
1822         }
1823         dev = &rte_eth_devices[port];
1824         priv = dev->data->dev_private;
1825         if (!(priv->representor || priv->master)) {
1826                 rte_errno = EINVAL;
1827                 return NULL;
1828         }
1829         return priv;
1830 }
1831
1832 /**
1833  * Get the E-Switch parameters by device instance.
1834  *
1835  * @param[in] port
1836  *   Device port id.
1837  * @param[out] es_domain_id
1838  *   E-Switch domain id.
1839  * @param[out] es_port_id
1840  *   The port id of the port in the E-Switch.
1841  *
1842  * @return
1843  *   pointer to device private data structure containing data needed
1844  *   on success, NULL otherwise and rte_errno is set.
1845  */
1846 struct mlx5_priv *
1847 mlx5_dev_to_eswitch_info(struct rte_eth_dev *dev)
1848 {
1849         struct mlx5_priv *priv;
1850
1851         priv = dev->data->dev_private;
1852         if (!(priv->representor || priv->master)) {
1853                 rte_errno = EINVAL;
1854                 return NULL;
1855         }
1856         return priv;
1857 }
1858
1859 /**
1860  * Get switch information associated with network interface.
1861  *
1862  * @param ifindex
1863  *   Network interface index.
1864  * @param[out] info
1865  *   Switch information object, populated in case of success.
1866  *
1867  * @return
1868  *   0 on success, a negative errno value otherwise and rte_errno is set.
1869  */
1870 int
1871 mlx5_sysfs_switch_info(unsigned int ifindex, struct mlx5_switch_info *info)
1872 {
1873         char ifname[IF_NAMESIZE];
1874         char port_name[IF_NAMESIZE];
1875         FILE *file;
1876         struct mlx5_switch_info data = {
1877                 .master = 0,
1878                 .representor = 0,
1879                 .name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET,
1880                 .port_name = 0,
1881                 .switch_id = 0,
1882         };
1883         DIR *dir;
1884         bool port_switch_id_set = false;
1885         bool device_dir = false;
1886         char c;
1887         int ret;
1888
1889         if (!if_indextoname(ifindex, ifname)) {
1890                 rte_errno = errno;
1891                 return -rte_errno;
1892         }
1893
1894         MKSTR(phys_port_name, "/sys/class/net/%s/phys_port_name",
1895               ifname);
1896         MKSTR(phys_switch_id, "/sys/class/net/%s/phys_switch_id",
1897               ifname);
1898         MKSTR(pci_device, "/sys/class/net/%s/device",
1899               ifname);
1900
1901         file = fopen(phys_port_name, "rb");
1902         if (file != NULL) {
1903                 ret = fscanf(file, "%s", port_name);
1904                 fclose(file);
1905                 if (ret == 1)
1906                         mlx5_translate_port_name(port_name, &data);
1907         }
1908         file = fopen(phys_switch_id, "rb");
1909         if (file == NULL) {
1910                 rte_errno = errno;
1911                 return -rte_errno;
1912         }
1913         port_switch_id_set =
1914                 fscanf(file, "%" SCNx64 "%c", &data.switch_id, &c) == 2 &&
1915                 c == '\n';
1916         fclose(file);
1917         dir = opendir(pci_device);
1918         if (dir != NULL) {
1919                 closedir(dir);
1920                 device_dir = true;
1921         }
1922         if (port_switch_id_set) {
1923                 /* We have some E-Switch configuration. */
1924                 mlx5_sysfs_check_switch_info(device_dir, &data);
1925         }
1926         *info = data;
1927         assert(!(data.master && data.representor));
1928         if (data.master && data.representor) {
1929                 DRV_LOG(ERR, "ifindex %u device is recognized as master"
1930                              " and as representor", ifindex);
1931                 rte_errno = ENODEV;
1932                 return -rte_errno;
1933         }
1934         return 0;
1935 }
1936
1937 /**
1938  * Analyze gathered port parameters via Netlink to recognize master
1939  * and representor devices for E-Switch configuration.
1940  *
1941  * @param[in] num_vf_set
1942  *   flag of presence of number of VFs port attribute.
1943  * @param[inout] switch_info
1944  *   Port information, including port name as a number and port name
1945  *   type if recognized
1946  *
1947  * @return
1948  *   master and representor flags are set in switch_info according to
1949  *   recognized parameters (if any).
1950  */
1951 void
1952 mlx5_nl_check_switch_info(bool num_vf_set,
1953                           struct mlx5_switch_info *switch_info)
1954 {
1955         switch (switch_info->name_type) {
1956         case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN:
1957                 /*
1958                  * Name is not recognized, assume the master,
1959                  * check the number of VFs key presence.
1960                  */
1961                 switch_info->master = num_vf_set;
1962                 break;
1963         case MLX5_PHYS_PORT_NAME_TYPE_NOTSET:
1964                 /*
1965                  * Name is not set, this assumes the legacy naming
1966                  * schema for master, just check if there is a
1967                  * number of VFs key.
1968                  */
1969                 switch_info->master = num_vf_set;
1970                 break;
1971         case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
1972                 /* New uplink naming schema recognized. */
1973                 switch_info->master = 1;
1974                 break;
1975         case MLX5_PHYS_PORT_NAME_TYPE_LEGACY:
1976                 /* Legacy representors naming schema. */
1977                 switch_info->representor = !num_vf_set;
1978                 break;
1979         case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
1980                 /* New representors naming schema. */
1981                 switch_info->representor = 1;
1982                 break;
1983         }
1984 }
1985
1986 /**
1987  * Analyze gathered port parameters via sysfs to recognize master
1988  * and representor devices for E-Switch configuration.
1989  *
1990  * @param[in] device_dir
1991  *   flag of presence of "device" directory under port device key.
1992  * @param[inout] switch_info
1993  *   Port information, including port name as a number and port name
1994  *   type if recognized
1995  *
1996  * @return
1997  *   master and representor flags are set in switch_info according to
1998  *   recognized parameters (if any).
1999  */
2000 void
2001 mlx5_sysfs_check_switch_info(bool device_dir,
2002                              struct mlx5_switch_info *switch_info)
2003 {
2004         switch (switch_info->name_type) {
2005         case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN:
2006                 /*
2007                  * Name is not recognized, assume the master,
2008                  * check the device directory presence.
2009                  */
2010                 switch_info->master = device_dir;
2011                 break;
2012         case MLX5_PHYS_PORT_NAME_TYPE_NOTSET:
2013                 /*
2014                  * Name is not set, this assumes the legacy naming
2015                  * schema for master, just check if there is
2016                  * a device directory.
2017                  */
2018                 switch_info->master = device_dir;
2019                 break;
2020         case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
2021                 /* New uplink naming schema recognized. */
2022                 switch_info->master = 1;
2023                 break;
2024         case MLX5_PHYS_PORT_NAME_TYPE_LEGACY:
2025                 /* Legacy representors naming schema. */
2026                 switch_info->representor = !device_dir;
2027                 break;
2028         case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
2029                 /* New representors naming schema. */
2030                 switch_info->representor = 1;
2031                 break;
2032         }
2033 }
2034
2035 /**
2036  * Extract port name, as a number, from sysfs or netlink information.
2037  *
2038  * @param[in] port_name_in
2039  *   String representing the port name.
2040  * @param[out] port_info_out
2041  *   Port information, including port name as a number and port name
2042  *   type if recognized
2043  *
2044  * @return
2045  *   port_name field set according to recognized name format.
2046  */
2047 void
2048 mlx5_translate_port_name(const char *port_name_in,
2049                          struct mlx5_switch_info *port_info_out)
2050 {
2051         char pf_c1, pf_c2, vf_c1, vf_c2;
2052         char *end;
2053         int sc_items;
2054
2055         /*
2056          * Check for port-name as a string of the form pf0vf0
2057          * (support kernel ver >= 5.0 or OFED ver >= 4.6).
2058          */
2059         sc_items = sscanf(port_name_in, "%c%c%d%c%c%d",
2060                           &pf_c1, &pf_c2, &port_info_out->pf_num,
2061                           &vf_c1, &vf_c2, &port_info_out->port_name);
2062         if (sc_items == 6 &&
2063             pf_c1 == 'p' && pf_c2 == 'f' &&
2064             vf_c1 == 'v' && vf_c2 == 'f') {
2065                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_PFVF;
2066                 return;
2067         }
2068         /*
2069          * Check for port-name as a string of the form p0
2070          * (support kernel ver >= 5.0, or OFED ver >= 4.6).
2071          */
2072         sc_items = sscanf(port_name_in, "%c%d",
2073                           &pf_c1, &port_info_out->port_name);
2074         if (sc_items == 2 && pf_c1 == 'p') {
2075                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UPLINK;
2076                 return;
2077         }
2078         /* Check for port-name as a number (support kernel ver < 5.0 */
2079         errno = 0;
2080         port_info_out->port_name = strtol(port_name_in, &end, 0);
2081         if (!errno &&
2082             (size_t)(end - port_name_in) == strlen(port_name_in)) {
2083                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_LEGACY;
2084                 return;
2085         }
2086         port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN;
2087         return;
2088 }
2089
2090 /**
2091  * DPDK callback to retrieve plug-in module EEPROM information (type and size).
2092  *
2093  * @param dev
2094  *   Pointer to Ethernet device structure.
2095  * @param[out] modinfo
2096  *   Storage for plug-in module EEPROM information.
2097  *
2098  * @return
2099  *   0 on success, a negative errno value otherwise and rte_errno is set.
2100  */
2101 int
2102 mlx5_get_module_info(struct rte_eth_dev *dev,
2103                      struct rte_eth_dev_module_info *modinfo)
2104 {
2105         struct ethtool_modinfo info = {
2106                 .cmd = ETHTOOL_GMODULEINFO,
2107         };
2108         struct ifreq ifr = (struct ifreq) {
2109                 .ifr_data = (void *)&info,
2110         };
2111         int ret = 0;
2112
2113         if (!dev || !modinfo) {
2114                 DRV_LOG(WARNING, "missing argument, cannot get module info");
2115                 rte_errno = EINVAL;
2116                 return -rte_errno;
2117         }
2118         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
2119         if (ret) {
2120                 DRV_LOG(WARNING, "port %u ioctl(SIOCETHTOOL) failed: %s",
2121                         dev->data->port_id, strerror(rte_errno));
2122                 return ret;
2123         }
2124         modinfo->type = info.type;
2125         modinfo->eeprom_len = info.eeprom_len;
2126         return ret;
2127 }
2128
2129 /**
2130  * DPDK callback to retrieve plug-in module EEPROM data.
2131  *
2132  * @param dev
2133  *   Pointer to Ethernet device structure.
2134  * @param[out] info
2135  *   Storage for plug-in module EEPROM data.
2136  *
2137  * @return
2138  *   0 on success, a negative errno value otherwise and rte_errno is set.
2139  */
2140 int mlx5_get_module_eeprom(struct rte_eth_dev *dev,
2141                            struct rte_dev_eeprom_info *info)
2142 {
2143         struct ethtool_eeprom *eeprom;
2144         struct ifreq ifr;
2145         int ret = 0;
2146
2147         if (!dev || !info) {
2148                 DRV_LOG(WARNING, "missing argument, cannot get module eeprom");
2149                 rte_errno = EINVAL;
2150                 return -rte_errno;
2151         }
2152         eeprom = rte_calloc(__func__, 1,
2153                             (sizeof(struct ethtool_eeprom) + info->length), 0);
2154         if (!eeprom) {
2155                 DRV_LOG(WARNING, "port %u cannot allocate memory for "
2156                         "eeprom data", dev->data->port_id);
2157                 rte_errno = ENOMEM;
2158                 return -rte_errno;
2159         }
2160         eeprom->cmd = ETHTOOL_GMODULEEEPROM;
2161         eeprom->offset = info->offset;
2162         eeprom->len = info->length;
2163         ifr = (struct ifreq) {
2164                 .ifr_data = (void *)eeprom,
2165         };
2166         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
2167         if (ret)
2168                 DRV_LOG(WARNING, "port %u ioctl(SIOCETHTOOL) failed: %s",
2169                         dev->data->port_id, strerror(rte_errno));
2170         else
2171                 rte_memcpy(info->data, eeprom->data, info->length);
2172         rte_free(eeprom);
2173         return ret;
2174 }
2175
2176 /**
2177  * DPDK callback to retrieve hairpin capabilities.
2178  *
2179  * @param dev
2180  *   Pointer to Ethernet device structure.
2181  * @param[out] cap
2182  *   Storage for hairpin capability data.
2183  *
2184  * @return
2185  *   0 on success, a negative errno value otherwise and rte_errno is set.
2186  */
2187 int mlx5_hairpin_cap_get(struct rte_eth_dev *dev,
2188                          struct rte_eth_hairpin_cap *cap)
2189 {
2190         struct mlx5_priv *priv = dev->data->dev_private;
2191
2192         if (priv->sh->devx == 0) {
2193                 rte_errno = ENOTSUP;
2194                 return -rte_errno;
2195         }
2196         cap->max_nb_queues = UINT16_MAX;
2197         cap->max_rx_2_tx = 1;
2198         cap->max_tx_2_rx = 1;
2199         cap->max_nb_desc = 8192;
2200         return 0;
2201 }