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 unsigned int i; 387 unsigned int j; 388 unsigned int reta_idx_n; 389 const uint8_t use_app_rss_key = 390 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key; 391 int ret = 0; 392 393 if (use_app_rss_key && 394 (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len != 395 MLX5_RSS_HASH_KEY_LEN)) { 396 DRV_LOG(ERR, "port %u RSS key len must be %s Bytes long", 397 dev->data->port_id, RTE_STR(MLX5_RSS_HASH_KEY_LEN)); 398 rte_errno = EINVAL; 399 return -rte_errno; 400 } 401 priv->rss_conf.rss_key = 402 rte_realloc(priv->rss_conf.rss_key, 403 MLX5_RSS_HASH_KEY_LEN, 0); 404 if (!priv->rss_conf.rss_key) { 405 DRV_LOG(ERR, "port %u cannot allocate RSS hash key memory (%u)", 406 dev->data->port_id, rxqs_n); 407 rte_errno = ENOMEM; 408 return -rte_errno; 409 } 410 memcpy(priv->rss_conf.rss_key, 411 use_app_rss_key ? 412 dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key : 413 rss_hash_default_key, 414 MLX5_RSS_HASH_KEY_LEN); 415 priv->rss_conf.rss_key_len = MLX5_RSS_HASH_KEY_LEN; 416 priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf; 417 priv->rxqs = (void *)dev->data->rx_queues; 418 priv->txqs = (void *)dev->data->tx_queues; 419 if (txqs_n != priv->txqs_n) { 420 DRV_LOG(INFO, "port %u Tx queues number update: %u -> %u", 421 dev->data->port_id, priv->txqs_n, txqs_n); 422 priv->txqs_n = txqs_n; 423 } 424 if (rxqs_n > priv->config.ind_table_max_size) { 425 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)", 426 dev->data->port_id, rxqs_n); 427 rte_errno = EINVAL; 428 return -rte_errno; 429 } 430 if (rxqs_n != priv->rxqs_n) { 431 DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u", 432 dev->data->port_id, priv->rxqs_n, rxqs_n); 433 priv->rxqs_n = rxqs_n; 434 /* 435 * If the requested number of RX queues is not a power of two, 436 * use the maximum indirection table size for better balancing. 437 * The result is always rounded to the next power of two. 438 */ 439 reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ? 440 priv->config.ind_table_max_size : 441 rxqs_n)); 442 ret = mlx5_rss_reta_index_resize(dev, reta_idx_n); 443 if (ret) 444 return ret; 445 /* 446 * When the number of RX queues is not a power of two, 447 * the remaining table entries are padded with reused WQs 448 * and hashes are not spread uniformly. 449 */ 450 for (i = 0, j = 0; (i != reta_idx_n); ++i) { 451 (*priv->reta_idx)[i] = j; 452 if (++j == rxqs_n) 453 j = 0; 454 } 455 } 456 ret = mlx5_proc_priv_init(dev); 457 if (ret) 458 return ret; 459 return 0; 460 } 461 462 /** 463 * Sets default tuning parameters. 464 * 465 * @param dev 466 * Pointer to Ethernet device. 467 * @param[out] info 468 * Info structure output buffer. 469 */ 470 static void 471 mlx5_set_default_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) 472 { 473 struct mlx5_priv *priv = dev->data->dev_private; 474 475 /* Minimum CPU utilization. */ 476 info->default_rxportconf.ring_size = 256; 477 info->default_txportconf.ring_size = 256; 478 info->default_rxportconf.burst_size = 64; 479 info->default_txportconf.burst_size = 64; 480 if (priv->link_speed_capa & ETH_LINK_SPEED_100G) { 481 info->default_rxportconf.nb_queues = 16; 482 info->default_txportconf.nb_queues = 16; 483 if (dev->data->nb_rx_queues > 2 || 484 dev->data->nb_tx_queues > 2) { 485 /* Max Throughput. */ 486 info->default_rxportconf.ring_size = 2048; 487 info->default_txportconf.ring_size = 2048; 488 } 489 } else { 490 info->default_rxportconf.nb_queues = 8; 491 info->default_txportconf.nb_queues = 8; 492 if (dev->data->nb_rx_queues > 2 || 493 dev->data->nb_tx_queues > 2) { 494 /* Max Throughput. */ 495 info->default_rxportconf.ring_size = 4096; 496 info->default_txportconf.ring_size = 4096; 497 } 498 } 499 } 500 501 /** 502 * Sets tx mbuf limiting parameters. 503 * 504 * @param dev 505 * Pointer to Ethernet device. 506 * @param[out] info 507 * Info structure output buffer. 508 */ 509 static void 510 mlx5_set_txlimit_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) 511 { 512 struct mlx5_priv *priv = dev->data->dev_private; 513 struct mlx5_dev_config *config = &priv->config; 514 unsigned int inlen; 515 uint16_t nb_max; 516 517 inlen = (config->txq_inline_max == MLX5_ARG_UNSET) ? 518 MLX5_SEND_DEF_INLINE_LEN : 519 (unsigned int)config->txq_inline_max; 520 assert(config->txq_inline_min >= 0); 521 inlen = RTE_MAX(inlen, (unsigned int)config->txq_inline_min); 522 inlen = RTE_MIN(inlen, MLX5_WQE_SIZE_MAX + 523 MLX5_ESEG_MIN_INLINE_SIZE - 524 MLX5_WQE_CSEG_SIZE - 525 MLX5_WQE_ESEG_SIZE - 526 MLX5_WQE_DSEG_SIZE * 2); 527 nb_max = (MLX5_WQE_SIZE_MAX + 528 MLX5_ESEG_MIN_INLINE_SIZE - 529 MLX5_WQE_CSEG_SIZE - 530 MLX5_WQE_ESEG_SIZE - 531 MLX5_WQE_DSEG_SIZE - 532 inlen) / MLX5_WSEG_SIZE; 533 info->tx_desc_lim.nb_seg_max = nb_max; 534 info->tx_desc_lim.nb_mtu_seg_max = nb_max; 535 } 536 537 /** 538 * DPDK callback to get information about the device. 539 * 540 * @param dev 541 * Pointer to Ethernet device structure. 542 * @param[out] info 543 * Info structure output buffer. 544 */ 545 void 546 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) 547 { 548 struct mlx5_priv *priv = dev->data->dev_private; 549 struct mlx5_dev_config *config = &priv->config; 550 unsigned int max; 551 552 /* FIXME: we should ask the device for these values. */ 553 info->min_rx_bufsize = 32; 554 info->max_rx_pktlen = 65536; 555 /* 556 * Since we need one CQ per QP, the limit is the minimum number 557 * between the two values. 558 */ 559 max = RTE_MIN(priv->sh->device_attr.orig_attr.max_cq, 560 priv->sh->device_attr.orig_attr.max_qp); 561 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */ 562 if (max >= 65535) 563 max = 65535; 564 info->max_rx_queues = max; 565 info->max_tx_queues = max; 566 info->max_mac_addrs = MLX5_MAX_UC_MAC_ADDRESSES; 567 info->rx_queue_offload_capa = mlx5_get_rx_queue_offloads(dev); 568 info->rx_offload_capa = (mlx5_get_rx_port_offloads() | 569 info->rx_queue_offload_capa); 570 info->tx_offload_capa = mlx5_get_tx_port_offloads(dev); 571 info->if_index = mlx5_ifindex(dev); 572 info->reta_size = priv->reta_idx_n ? 573 priv->reta_idx_n : config->ind_table_max_size; 574 info->hash_key_size = MLX5_RSS_HASH_KEY_LEN; 575 info->speed_capa = priv->link_speed_capa; 576 info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK; 577 mlx5_set_default_params(dev, info); 578 mlx5_set_txlimit_params(dev, info); 579 info->switch_info.name = dev->data->name; 580 info->switch_info.domain_id = priv->domain_id; 581 info->switch_info.port_id = priv->representor_id; 582 if (priv->representor) { 583 unsigned int i = mlx5_dev_to_port_id(dev->device, NULL, 0); 584 uint16_t port_id[i]; 585 586 i = RTE_MIN(mlx5_dev_to_port_id(dev->device, port_id, i), i); 587 while (i--) { 588 struct mlx5_priv *opriv = 589 rte_eth_devices[port_id[i]].data->dev_private; 590 591 if (!opriv || 592 opriv->representor || 593 opriv->domain_id != priv->domain_id) 594 continue; 595 /* 596 * Override switch name with that of the master 597 * device. 598 */ 599 info->switch_info.name = opriv->dev_data->name; 600 break; 601 } 602 } 603 } 604 605 /** 606 * Get device current raw clock counter 607 * 608 * @param dev 609 * Pointer to Ethernet device structure. 610 * @param[out] time 611 * Current raw clock counter of the device. 612 * 613 * @return 614 * 0 if the clock has correctly been read 615 * The value of errno in case of error 616 */ 617 int 618 mlx5_read_clock(struct rte_eth_dev *dev, uint64_t *clock) 619 { 620 struct mlx5_priv *priv = dev->data->dev_private; 621 struct ibv_context *ctx = priv->sh->ctx; 622 struct ibv_values_ex values; 623 int err = 0; 624 625 values.comp_mask = IBV_VALUES_MASK_RAW_CLOCK; 626 err = mlx5_glue->query_rt_values_ex(ctx, &values); 627 if (err != 0) { 628 DRV_LOG(WARNING, "Could not query the clock !"); 629 return err; 630 } 631 *clock = values.raw_clock.tv_nsec; 632 return 0; 633 } 634 635 /** 636 * Get firmware version of a device. 637 * 638 * @param dev 639 * Ethernet device port. 640 * @param fw_ver 641 * String output allocated by caller. 642 * @param fw_size 643 * Size of the output string, including terminating null byte. 644 * 645 * @return 646 * 0 on success, or the size of the non truncated string if too big. 647 */ 648 int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size) 649 { 650 struct mlx5_priv *priv = dev->data->dev_private; 651 struct ibv_device_attr *attr = &priv->sh->device_attr.orig_attr; 652 size_t size = strnlen(attr->fw_ver, sizeof(attr->fw_ver)) + 1; 653 654 if (fw_size < size) 655 return size; 656 if (fw_ver != NULL) 657 strlcpy(fw_ver, attr->fw_ver, fw_size); 658 return 0; 659 } 660 661 /** 662 * Get supported packet types. 663 * 664 * @param dev 665 * Pointer to Ethernet device structure. 666 * 667 * @return 668 * A pointer to the supported Packet types array. 669 */ 670 const uint32_t * 671 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev) 672 { 673 static const uint32_t ptypes[] = { 674 /* refers to rxq_cq_to_pkt_type() */ 675 RTE_PTYPE_L2_ETHER, 676 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN, 677 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN, 678 RTE_PTYPE_L4_NONFRAG, 679 RTE_PTYPE_L4_FRAG, 680 RTE_PTYPE_L4_TCP, 681 RTE_PTYPE_L4_UDP, 682 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN, 683 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN, 684 RTE_PTYPE_INNER_L4_NONFRAG, 685 RTE_PTYPE_INNER_L4_FRAG, 686 RTE_PTYPE_INNER_L4_TCP, 687 RTE_PTYPE_INNER_L4_UDP, 688 RTE_PTYPE_UNKNOWN 689 }; 690 691 if (dev->rx_pkt_burst == mlx5_rx_burst || 692 dev->rx_pkt_burst == mlx5_rx_burst_mprq || 693 dev->rx_pkt_burst == mlx5_rx_burst_vec) 694 return ptypes; 695 return NULL; 696 } 697 698 /** 699 * Retrieve the master device for representor in the same switch domain. 700 * 701 * @param dev 702 * Pointer to representor Ethernet device structure. 703 * 704 * @return 705 * Master device structure on success, NULL otherwise. 706 */ 707 708 static struct rte_eth_dev * 709 mlx5_find_master_dev(struct rte_eth_dev *dev) 710 { 711 struct mlx5_priv *priv; 712 uint16_t port_id; 713 uint16_t domain_id; 714 715 priv = dev->data->dev_private; 716 domain_id = priv->domain_id; 717 assert(priv->representor); 718 RTE_ETH_FOREACH_DEV_OF(port_id, dev->device) { 719 priv = rte_eth_devices[port_id].data->dev_private; 720 if (priv && 721 priv->master && 722 priv->domain_id == domain_id) 723 return &rte_eth_devices[port_id]; 724 } 725 return NULL; 726 } 727 728 /** 729 * DPDK callback to retrieve physical link information. 730 * 731 * @param dev 732 * Pointer to Ethernet device structure. 733 * @param[out] link 734 * Storage for current link status. 735 * 736 * @return 737 * 0 on success, a negative errno value otherwise and rte_errno is set. 738 */ 739 static int 740 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, 741 struct rte_eth_link *link) 742 { 743 struct mlx5_priv *priv = dev->data->dev_private; 744 struct ethtool_cmd edata = { 745 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */ 746 }; 747 struct ifreq ifr; 748 struct rte_eth_link dev_link; 749 int link_speed = 0; 750 int ret; 751 752 ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr); 753 if (ret) { 754 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s", 755 dev->data->port_id, strerror(rte_errno)); 756 return ret; 757 } 758 dev_link = (struct rte_eth_link) { 759 .link_status = ((ifr.ifr_flags & IFF_UP) && 760 (ifr.ifr_flags & IFF_RUNNING)), 761 }; 762 ifr = (struct ifreq) { 763 .ifr_data = (void *)&edata, 764 }; 765 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); 766 if (ret) { 767 if (ret == -ENOTSUP && priv->representor) { 768 struct rte_eth_dev *master; 769 770 /* 771 * For representors we can try to inherit link 772 * settings from the master device. Actually 773 * link settings do not make a lot of sense 774 * for representors due to missing physical 775 * link. The old kernel drivers supported 776 * emulated settings query for representors, 777 * the new ones do not, so we have to add 778 * this code for compatibility issues. 779 */ 780 master = mlx5_find_master_dev(dev); 781 if (master) { 782 ifr = (struct ifreq) { 783 .ifr_data = (void *)&edata, 784 }; 785 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr); 786 } 787 } 788 if (ret) { 789 DRV_LOG(WARNING, 790 "port %u ioctl(SIOCETHTOOL," 791 " ETHTOOL_GSET) failed: %s", 792 dev->data->port_id, strerror(rte_errno)); 793 return ret; 794 } 795 } 796 link_speed = ethtool_cmd_speed(&edata); 797 if (link_speed == -1) 798 dev_link.link_speed = ETH_SPEED_NUM_NONE; 799 else 800 dev_link.link_speed = link_speed; 801 priv->link_speed_capa = 0; 802 if (edata.supported & SUPPORTED_Autoneg) 803 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 804 if (edata.supported & (SUPPORTED_1000baseT_Full | 805 SUPPORTED_1000baseKX_Full)) 806 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 807 if (edata.supported & SUPPORTED_10000baseKR_Full) 808 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 809 if (edata.supported & (SUPPORTED_40000baseKR4_Full | 810 SUPPORTED_40000baseCR4_Full | 811 SUPPORTED_40000baseSR4_Full | 812 SUPPORTED_40000baseLR4_Full)) 813 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 814 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ? 815 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 816 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 817 ETH_LINK_SPEED_FIXED); 818 if (((dev_link.link_speed && !dev_link.link_status) || 819 (!dev_link.link_speed && dev_link.link_status))) { 820 rte_errno = EAGAIN; 821 return -rte_errno; 822 } 823 *link = dev_link; 824 return 0; 825 } 826 827 /** 828 * Retrieve physical link information (unlocked version using new ioctl). 829 * 830 * @param dev 831 * Pointer to Ethernet device structure. 832 * @param[out] link 833 * Storage for current link status. 834 * 835 * @return 836 * 0 on success, a negative errno value otherwise and rte_errno is set. 837 */ 838 static int 839 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, 840 struct rte_eth_link *link) 841 842 { 843 struct mlx5_priv *priv = dev->data->dev_private; 844 struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS }; 845 struct ifreq ifr; 846 struct rte_eth_link dev_link; 847 struct rte_eth_dev *master = NULL; 848 uint64_t sc; 849 int ret; 850 851 ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr); 852 if (ret) { 853 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s", 854 dev->data->port_id, strerror(rte_errno)); 855 return ret; 856 } 857 dev_link = (struct rte_eth_link) { 858 .link_status = ((ifr.ifr_flags & IFF_UP) && 859 (ifr.ifr_flags & IFF_RUNNING)), 860 }; 861 ifr = (struct ifreq) { 862 .ifr_data = (void *)&gcmd, 863 }; 864 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); 865 if (ret) { 866 if (ret == -ENOTSUP && priv->representor) { 867 /* 868 * For representors we can try to inherit link 869 * settings from the master device. Actually 870 * link settings do not make a lot of sense 871 * for representors due to missing physical 872 * link. The old kernel drivers supported 873 * emulated settings query for representors, 874 * the new ones do not, so we have to add 875 * this code for compatibility issues. 876 */ 877 master = mlx5_find_master_dev(dev); 878 if (master) { 879 ifr = (struct ifreq) { 880 .ifr_data = (void *)&gcmd, 881 }; 882 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr); 883 } 884 } 885 if (ret) { 886 DRV_LOG(DEBUG, 887 "port %u ioctl(SIOCETHTOOL," 888 " ETHTOOL_GLINKSETTINGS) failed: %s", 889 dev->data->port_id, strerror(rte_errno)); 890 return ret; 891 } 892 893 } 894 gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords; 895 896 alignas(struct ethtool_link_settings) 897 uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) + 898 sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3]; 899 struct ethtool_link_settings *ecmd = (void *)data; 900 901 *ecmd = gcmd; 902 ifr.ifr_data = (void *)ecmd; 903 ret = mlx5_ifreq(master ? master : dev, SIOCETHTOOL, &ifr); 904 if (ret) { 905 DRV_LOG(DEBUG, 906 "port %u ioctl(SIOCETHTOOL," 907 "ETHTOOL_GLINKSETTINGS) failed: %s", 908 dev->data->port_id, strerror(rte_errno)); 909 return ret; 910 } 911 dev_link.link_speed = (ecmd->speed == UINT32_MAX) ? ETH_SPEED_NUM_NONE : 912 ecmd->speed; 913 sc = ecmd->link_mode_masks[0] | 914 ((uint64_t)ecmd->link_mode_masks[1] << 32); 915 priv->link_speed_capa = 0; 916 if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT)) 917 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 918 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) | 919 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT))) 920 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 921 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) | 922 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) | 923 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT))) 924 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 925 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) | 926 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT))) 927 priv->link_speed_capa |= ETH_LINK_SPEED_20G; 928 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) | 929 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) | 930 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) | 931 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT))) 932 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 933 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) | 934 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) | 935 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) | 936 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT))) 937 priv->link_speed_capa |= ETH_LINK_SPEED_56G; 938 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) | 939 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) | 940 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT))) 941 priv->link_speed_capa |= ETH_LINK_SPEED_25G; 942 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) | 943 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT))) 944 priv->link_speed_capa |= ETH_LINK_SPEED_50G; 945 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) | 946 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) | 947 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) | 948 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT))) 949 priv->link_speed_capa |= ETH_LINK_SPEED_100G; 950 dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ? 951 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 952 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 953 ETH_LINK_SPEED_FIXED); 954 if (((dev_link.link_speed && !dev_link.link_status) || 955 (!dev_link.link_speed && dev_link.link_status))) { 956 rte_errno = EAGAIN; 957 return -rte_errno; 958 } 959 *link = dev_link; 960 return 0; 961 } 962 963 /** 964 * DPDK callback to retrieve physical link information. 965 * 966 * @param dev 967 * Pointer to Ethernet device structure. 968 * @param wait_to_complete 969 * Wait for request completion. 970 * 971 * @return 972 * 0 if link status was not updated, positive if it was, a negative errno 973 * value otherwise and rte_errno is set. 974 */ 975 int 976 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete) 977 { 978 int ret; 979 struct rte_eth_link dev_link; 980 time_t start_time = time(NULL); 981 982 do { 983 ret = mlx5_link_update_unlocked_gs(dev, &dev_link); 984 if (ret == -ENOTSUP) 985 ret = mlx5_link_update_unlocked_gset(dev, &dev_link); 986 if (ret == 0) 987 break; 988 /* Handle wait to complete situation. */ 989 if (wait_to_complete && ret == -EAGAIN) { 990 if (abs((int)difftime(time(NULL), start_time)) < 991 MLX5_LINK_STATUS_TIMEOUT) { 992 usleep(0); 993 continue; 994 } else { 995 rte_errno = EBUSY; 996 return -rte_errno; 997 } 998 } else if (ret < 0) { 999 return ret; 1000 } 1001 } while (wait_to_complete); 1002 ret = !!memcmp(&dev->data->dev_link, &dev_link, 1003 sizeof(struct rte_eth_link)); 1004 dev->data->dev_link = dev_link; 1005 return ret; 1006 } 1007 1008 /** 1009 * DPDK callback to change the MTU. 1010 * 1011 * @param dev 1012 * Pointer to Ethernet device structure. 1013 * @param in_mtu 1014 * New MTU. 1015 * 1016 * @return 1017 * 0 on success, a negative errno value otherwise and rte_errno is set. 1018 */ 1019 int 1020 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu) 1021 { 1022 struct mlx5_priv *priv = dev->data->dev_private; 1023 uint16_t kern_mtu = 0; 1024 int ret; 1025 1026 ret = mlx5_get_mtu(dev, &kern_mtu); 1027 if (ret) 1028 return ret; 1029 /* Set kernel interface MTU first. */ 1030 ret = mlx5_set_mtu(dev, mtu); 1031 if (ret) 1032 return ret; 1033 ret = mlx5_get_mtu(dev, &kern_mtu); 1034 if (ret) 1035 return ret; 1036 if (kern_mtu == mtu) { 1037 priv->mtu = mtu; 1038 DRV_LOG(DEBUG, "port %u adapter MTU set to %u", 1039 dev->data->port_id, mtu); 1040 return 0; 1041 } 1042 rte_errno = EAGAIN; 1043 return -rte_errno; 1044 } 1045 1046 /** 1047 * DPDK callback to get flow control status. 1048 * 1049 * @param dev 1050 * Pointer to Ethernet device structure. 1051 * @param[out] fc_conf 1052 * Flow control output buffer. 1053 * 1054 * @return 1055 * 0 on success, a negative errno value otherwise and rte_errno is set. 1056 */ 1057 int 1058 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 1059 { 1060 struct ifreq ifr; 1061 struct ethtool_pauseparam ethpause = { 1062 .cmd = ETHTOOL_GPAUSEPARAM 1063 }; 1064 int ret; 1065 1066 ifr.ifr_data = (void *)ðpause; 1067 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); 1068 if (ret) { 1069 DRV_LOG(WARNING, 1070 "port %u ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM) failed:" 1071 " %s", 1072 dev->data->port_id, strerror(rte_errno)); 1073 return ret; 1074 } 1075 fc_conf->autoneg = ethpause.autoneg; 1076 if (ethpause.rx_pause && ethpause.tx_pause) 1077 fc_conf->mode = RTE_FC_FULL; 1078 else if (ethpause.rx_pause) 1079 fc_conf->mode = RTE_FC_RX_PAUSE; 1080 else if (ethpause.tx_pause) 1081 fc_conf->mode = RTE_FC_TX_PAUSE; 1082 else 1083 fc_conf->mode = RTE_FC_NONE; 1084 return 0; 1085 } 1086 1087 /** 1088 * DPDK callback to modify flow control parameters. 1089 * 1090 * @param dev 1091 * Pointer to Ethernet device structure. 1092 * @param[in] fc_conf 1093 * Flow control parameters. 1094 * 1095 * @return 1096 * 0 on success, a negative errno value otherwise and rte_errno is set. 1097 */ 1098 int 1099 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 1100 { 1101 struct ifreq ifr; 1102 struct ethtool_pauseparam ethpause = { 1103 .cmd = ETHTOOL_SPAUSEPARAM 1104 }; 1105 int ret; 1106 1107 ifr.ifr_data = (void *)ðpause; 1108 ethpause.autoneg = fc_conf->autoneg; 1109 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 1110 (fc_conf->mode & RTE_FC_RX_PAUSE)) 1111 ethpause.rx_pause = 1; 1112 else 1113 ethpause.rx_pause = 0; 1114 1115 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 1116 (fc_conf->mode & RTE_FC_TX_PAUSE)) 1117 ethpause.tx_pause = 1; 1118 else 1119 ethpause.tx_pause = 0; 1120 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); 1121 if (ret) { 1122 DRV_LOG(WARNING, 1123 "port %u ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)" 1124 " failed: %s", 1125 dev->data->port_id, strerror(rte_errno)); 1126 return ret; 1127 } 1128 return 0; 1129 } 1130 1131 /** 1132 * Get PCI information from struct ibv_device. 1133 * 1134 * @param device 1135 * Pointer to Ethernet device structure. 1136 * @param[out] pci_addr 1137 * PCI bus address output buffer. 1138 * 1139 * @return 1140 * 0 on success, a negative errno value otherwise and rte_errno is set. 1141 */ 1142 int 1143 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device, 1144 struct rte_pci_addr *pci_addr) 1145 { 1146 FILE *file; 1147 char line[32]; 1148 MKSTR(path, "%s/device/uevent", device->ibdev_path); 1149 1150 file = fopen(path, "rb"); 1151 if (file == NULL) { 1152 rte_errno = errno; 1153 return -rte_errno; 1154 } 1155 while (fgets(line, sizeof(line), file) == line) { 1156 size_t len = strlen(line); 1157 int ret; 1158 1159 /* Truncate long lines. */ 1160 if (len == (sizeof(line) - 1)) 1161 while (line[(len - 1)] != '\n') { 1162 ret = fgetc(file); 1163 if (ret == EOF) 1164 break; 1165 line[(len - 1)] = ret; 1166 } 1167 /* Extract information. */ 1168 if (sscanf(line, 1169 "PCI_SLOT_NAME=" 1170 "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n", 1171 &pci_addr->domain, 1172 &pci_addr->bus, 1173 &pci_addr->devid, 1174 &pci_addr->function) == 4) { 1175 ret = 0; 1176 break; 1177 } 1178 } 1179 fclose(file); 1180 return 0; 1181 } 1182 1183 /** 1184 * Handle asynchronous removal event for entire multiport device. 1185 * 1186 * @param sh 1187 * Infiniband device shared context. 1188 */ 1189 static void 1190 mlx5_dev_interrupt_device_fatal(struct mlx5_ibv_shared *sh) 1191 { 1192 uint32_t i; 1193 1194 for (i = 0; i < sh->max_port; ++i) { 1195 struct rte_eth_dev *dev; 1196 1197 if (sh->port[i].ih_port_id >= RTE_MAX_ETHPORTS) { 1198 /* 1199 * Or not existing port either no 1200 * handler installed for this port. 1201 */ 1202 continue; 1203 } 1204 dev = &rte_eth_devices[sh->port[i].ih_port_id]; 1205 assert(dev); 1206 if (dev->data->dev_conf.intr_conf.rmv) 1207 _rte_eth_dev_callback_process 1208 (dev, RTE_ETH_EVENT_INTR_RMV, NULL); 1209 } 1210 } 1211 1212 /** 1213 * Handle shared asynchronous events the NIC (removal event 1214 * and link status change). Supports multiport IB device. 1215 * 1216 * @param cb_arg 1217 * Callback argument. 1218 */ 1219 void 1220 mlx5_dev_interrupt_handler(void *cb_arg) 1221 { 1222 struct mlx5_ibv_shared *sh = cb_arg; 1223 struct ibv_async_event event; 1224 1225 /* Read all message from the IB device and acknowledge them. */ 1226 for (;;) { 1227 struct rte_eth_dev *dev; 1228 uint32_t tmp; 1229 1230 if (mlx5_glue->get_async_event(sh->ctx, &event)) 1231 break; 1232 /* Retrieve and check IB port index. */ 1233 tmp = (uint32_t)event.element.port_num; 1234 if (!tmp && event.event_type == IBV_EVENT_DEVICE_FATAL) { 1235 /* 1236 * The DEVICE_FATAL event is called once for 1237 * entire device without port specifying. 1238 * We should notify all existing ports. 1239 */ 1240 mlx5_glue->ack_async_event(&event); 1241 mlx5_dev_interrupt_device_fatal(sh); 1242 continue; 1243 } 1244 assert(tmp && (tmp <= sh->max_port)); 1245 if (!tmp) { 1246 /* Unsupported devive level event. */ 1247 mlx5_glue->ack_async_event(&event); 1248 DRV_LOG(DEBUG, 1249 "unsupported common event (type %d)", 1250 event.event_type); 1251 continue; 1252 } 1253 if (tmp > sh->max_port) { 1254 /* Invalid IB port index. */ 1255 mlx5_glue->ack_async_event(&event); 1256 DRV_LOG(DEBUG, 1257 "cannot handle an event (type %d)" 1258 "due to invalid IB port index (%u)", 1259 event.event_type, tmp); 1260 continue; 1261 } 1262 if (sh->port[tmp - 1].ih_port_id >= RTE_MAX_ETHPORTS) { 1263 /* No handler installed. */ 1264 mlx5_glue->ack_async_event(&event); 1265 DRV_LOG(DEBUG, 1266 "cannot handle an event (type %d)" 1267 "due to no handler installed for port %u", 1268 event.event_type, tmp); 1269 continue; 1270 } 1271 /* Retrieve ethernet device descriptor. */ 1272 tmp = sh->port[tmp - 1].ih_port_id; 1273 dev = &rte_eth_devices[tmp]; 1274 assert(dev); 1275 if ((event.event_type == IBV_EVENT_PORT_ACTIVE || 1276 event.event_type == IBV_EVENT_PORT_ERR) && 1277 dev->data->dev_conf.intr_conf.lsc) { 1278 mlx5_glue->ack_async_event(&event); 1279 if (mlx5_link_update(dev, 0) == -EAGAIN) { 1280 usleep(0); 1281 continue; 1282 } 1283 _rte_eth_dev_callback_process 1284 (dev, RTE_ETH_EVENT_INTR_LSC, NULL); 1285 continue; 1286 } 1287 DRV_LOG(DEBUG, 1288 "port %u cannot handle an unknown event (type %d)", 1289 dev->data->port_id, event.event_type); 1290 mlx5_glue->ack_async_event(&event); 1291 } 1292 } 1293 1294 /* 1295 * Unregister callback handler safely. The handler may be active 1296 * while we are trying to unregister it, in this case code -EAGAIN 1297 * is returned by rte_intr_callback_unregister(). This routine checks 1298 * the return code and tries to unregister handler again. 1299 * 1300 * @param handle 1301 * interrupt handle 1302 * @param cb_fn 1303 * pointer to callback routine 1304 * @cb_arg 1305 * opaque callback parameter 1306 */ 1307 void 1308 mlx5_intr_callback_unregister(const struct rte_intr_handle *handle, 1309 rte_intr_callback_fn cb_fn, void *cb_arg) 1310 { 1311 /* 1312 * Try to reduce timeout management overhead by not calling 1313 * the timer related routines on the first iteration. If the 1314 * unregistering succeeds on first call there will be no 1315 * timer calls at all. 1316 */ 1317 uint64_t twait = 0; 1318 uint64_t start = 0; 1319 1320 do { 1321 int ret; 1322 1323 ret = rte_intr_callback_unregister(handle, cb_fn, cb_arg); 1324 if (ret >= 0) 1325 return; 1326 if (ret != -EAGAIN) { 1327 DRV_LOG(INFO, "failed to unregister interrupt" 1328 " handler (error: %d)", ret); 1329 assert(false); 1330 return; 1331 } 1332 if (twait) { 1333 struct timespec onems; 1334 1335 /* Wait one millisecond and try again. */ 1336 onems.tv_sec = 0; 1337 onems.tv_nsec = NS_PER_S / MS_PER_S; 1338 nanosleep(&onems, 0); 1339 /* Check whether one second elapsed. */ 1340 if ((rte_get_timer_cycles() - start) <= twait) 1341 continue; 1342 } else { 1343 /* 1344 * We get the amount of timer ticks for one second. 1345 * If this amount elapsed it means we spent one 1346 * second in waiting. This branch is executed once 1347 * on first iteration. 1348 */ 1349 twait = rte_get_timer_hz(); 1350 assert(twait); 1351 } 1352 /* 1353 * Timeout elapsed, show message (once a second) and retry. 1354 * We have no other acceptable option here, if we ignore 1355 * the unregistering return code the handler will not 1356 * be unregistered, fd will be closed and we may get the 1357 * crush. Hanging and messaging in the loop seems not to be 1358 * the worst choice. 1359 */ 1360 DRV_LOG(INFO, "Retrying to unregister interrupt handler"); 1361 start = rte_get_timer_cycles(); 1362 } while (true); 1363 } 1364 1365 /** 1366 * Handle DEVX interrupts from the NIC. 1367 * This function is probably called from the DPDK host thread. 1368 * 1369 * @param cb_arg 1370 * Callback argument. 1371 */ 1372 void 1373 mlx5_dev_interrupt_handler_devx(void *cb_arg) 1374 { 1375 #ifndef HAVE_IBV_DEVX_ASYNC 1376 (void)cb_arg; 1377 return; 1378 #else 1379 struct mlx5_ibv_shared *sh = cb_arg; 1380 union { 1381 struct mlx5dv_devx_async_cmd_hdr cmd_resp; 1382 uint8_t buf[MLX5_ST_SZ_BYTES(query_flow_counter_out) + 1383 MLX5_ST_SZ_BYTES(traffic_counter) + 1384 sizeof(struct mlx5dv_devx_async_cmd_hdr)]; 1385 } out; 1386 uint8_t *buf = out.buf + sizeof(out.cmd_resp); 1387 1388 while (!mlx5_glue->devx_get_async_cmd_comp(sh->devx_comp, 1389 &out.cmd_resp, 1390 sizeof(out.buf))) 1391 mlx5_flow_async_pool_query_handle 1392 (sh, (uint64_t)out.cmd_resp.wr_id, 1393 mlx5_devx_get_out_command_status(buf)); 1394 #endif /* HAVE_IBV_DEVX_ASYNC */ 1395 } 1396 1397 /** 1398 * Uninstall shared asynchronous device events handler. 1399 * This function is implemented to support event sharing 1400 * between multiple ports of single IB device. 1401 * 1402 * @param dev 1403 * Pointer to Ethernet device. 1404 */ 1405 static void 1406 mlx5_dev_shared_handler_uninstall(struct rte_eth_dev *dev) 1407 { 1408 struct mlx5_priv *priv = dev->data->dev_private; 1409 struct mlx5_ibv_shared *sh = priv->sh; 1410 1411 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 1412 return; 1413 pthread_mutex_lock(&sh->intr_mutex); 1414 assert(priv->ibv_port); 1415 assert(priv->ibv_port <= sh->max_port); 1416 assert(dev->data->port_id < RTE_MAX_ETHPORTS); 1417 if (sh->port[priv->ibv_port - 1].ih_port_id >= RTE_MAX_ETHPORTS) 1418 goto exit; 1419 assert(sh->port[priv->ibv_port - 1].ih_port_id == 1420 (uint32_t)dev->data->port_id); 1421 assert(sh->intr_cnt); 1422 sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS; 1423 if (!sh->intr_cnt || --sh->intr_cnt) 1424 goto exit; 1425 mlx5_intr_callback_unregister(&sh->intr_handle, 1426 mlx5_dev_interrupt_handler, sh); 1427 sh->intr_handle.fd = 0; 1428 sh->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; 1429 if (sh->intr_handle_devx.fd) { 1430 rte_intr_callback_unregister(&sh->intr_handle_devx, 1431 mlx5_dev_interrupt_handler_devx, 1432 sh); 1433 sh->intr_handle_devx.fd = 0; 1434 sh->intr_handle_devx.type = RTE_INTR_HANDLE_UNKNOWN; 1435 } 1436 if (sh->devx_comp) { 1437 mlx5_glue->devx_destroy_cmd_comp(sh->devx_comp); 1438 sh->devx_comp = NULL; 1439 } 1440 exit: 1441 pthread_mutex_unlock(&sh->intr_mutex); 1442 } 1443 1444 /** 1445 * Install shared asynchronous device events handler. 1446 * This function is implemented to support event sharing 1447 * between multiple ports of single IB device. 1448 * 1449 * @param dev 1450 * Pointer to Ethernet device. 1451 */ 1452 static void 1453 mlx5_dev_shared_handler_install(struct rte_eth_dev *dev) 1454 { 1455 struct mlx5_priv *priv = dev->data->dev_private; 1456 struct mlx5_ibv_shared *sh = priv->sh; 1457 int ret; 1458 int flags; 1459 1460 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 1461 return; 1462 pthread_mutex_lock(&sh->intr_mutex); 1463 assert(priv->ibv_port); 1464 assert(priv->ibv_port <= sh->max_port); 1465 assert(dev->data->port_id < RTE_MAX_ETHPORTS); 1466 if (sh->port[priv->ibv_port - 1].ih_port_id < RTE_MAX_ETHPORTS) { 1467 /* The handler is already installed for this port. */ 1468 assert(sh->intr_cnt); 1469 goto exit; 1470 } 1471 sh->port[priv->ibv_port - 1].ih_port_id = (uint32_t)dev->data->port_id; 1472 if (sh->intr_cnt) { 1473 sh->intr_cnt++; 1474 goto exit; 1475 } 1476 /* No shared handler installed. */ 1477 assert(sh->ctx->async_fd > 0); 1478 flags = fcntl(sh->ctx->async_fd, F_GETFL); 1479 ret = fcntl(sh->ctx->async_fd, F_SETFL, flags | O_NONBLOCK); 1480 if (ret) { 1481 DRV_LOG(INFO, "failed to change file descriptor" 1482 " async event queue"); 1483 goto error; 1484 } 1485 sh->intr_handle.fd = sh->ctx->async_fd; 1486 sh->intr_handle.type = RTE_INTR_HANDLE_EXT; 1487 rte_intr_callback_register(&sh->intr_handle, 1488 mlx5_dev_interrupt_handler, sh); 1489 if (priv->config.devx) { 1490 #ifndef HAVE_IBV_DEVX_ASYNC 1491 goto error_unregister; 1492 #else 1493 sh->devx_comp = mlx5_glue->devx_create_cmd_comp(sh->ctx); 1494 if (sh->devx_comp) { 1495 flags = fcntl(sh->devx_comp->fd, F_GETFL); 1496 ret = fcntl(sh->devx_comp->fd, F_SETFL, 1497 flags | O_NONBLOCK); 1498 if (ret) { 1499 DRV_LOG(INFO, "failed to change file descriptor" 1500 " devx async event queue"); 1501 goto error_unregister; 1502 } 1503 sh->intr_handle_devx.fd = sh->devx_comp->fd; 1504 sh->intr_handle_devx.type = RTE_INTR_HANDLE_EXT; 1505 rte_intr_callback_register 1506 (&sh->intr_handle_devx, 1507 mlx5_dev_interrupt_handler_devx, sh); 1508 } else { 1509 DRV_LOG(INFO, "failed to create devx async command " 1510 "completion"); 1511 goto error_unregister; 1512 } 1513 #endif /* HAVE_IBV_DEVX_ASYNC */ 1514 } 1515 sh->intr_cnt++; 1516 goto exit; 1517 error_unregister: 1518 rte_intr_callback_unregister(&sh->intr_handle, 1519 mlx5_dev_interrupt_handler, sh); 1520 error: 1521 /* Indicate there will be no interrupts. */ 1522 dev->data->dev_conf.intr_conf.lsc = 0; 1523 dev->data->dev_conf.intr_conf.rmv = 0; 1524 sh->intr_handle.fd = 0; 1525 sh->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; 1526 sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS; 1527 exit: 1528 pthread_mutex_unlock(&sh->intr_mutex); 1529 } 1530 1531 /** 1532 * Uninstall interrupt handler. 1533 * 1534 * @param dev 1535 * Pointer to Ethernet device. 1536 */ 1537 void 1538 mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev) 1539 { 1540 mlx5_dev_shared_handler_uninstall(dev); 1541 } 1542 1543 /** 1544 * Install interrupt handler. 1545 * 1546 * @param dev 1547 * Pointer to Ethernet device. 1548 */ 1549 void 1550 mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev) 1551 { 1552 mlx5_dev_shared_handler_install(dev); 1553 } 1554 1555 /** 1556 * DPDK callback to bring the link DOWN. 1557 * 1558 * @param dev 1559 * Pointer to Ethernet device structure. 1560 * 1561 * @return 1562 * 0 on success, a negative errno value otherwise and rte_errno is set. 1563 */ 1564 int 1565 mlx5_set_link_down(struct rte_eth_dev *dev) 1566 { 1567 return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP); 1568 } 1569 1570 /** 1571 * DPDK callback to bring the link UP. 1572 * 1573 * @param dev 1574 * Pointer to Ethernet device structure. 1575 * 1576 * @return 1577 * 0 on success, a negative errno value otherwise and rte_errno is set. 1578 */ 1579 int 1580 mlx5_set_link_up(struct rte_eth_dev *dev) 1581 { 1582 return mlx5_set_flags(dev, ~IFF_UP, IFF_UP); 1583 } 1584 1585 /** 1586 * Configure the RX function to use. 1587 * 1588 * @param dev 1589 * Pointer to private data structure. 1590 * 1591 * @return 1592 * Pointer to selected Rx burst function. 1593 */ 1594 eth_rx_burst_t 1595 mlx5_select_rx_function(struct rte_eth_dev *dev) 1596 { 1597 eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst; 1598 1599 assert(dev != NULL); 1600 if (mlx5_check_vec_rx_support(dev) > 0) { 1601 rx_pkt_burst = mlx5_rx_burst_vec; 1602 DRV_LOG(DEBUG, "port %u selected Rx vectorized function", 1603 dev->data->port_id); 1604 } else if (mlx5_mprq_enabled(dev)) { 1605 rx_pkt_burst = mlx5_rx_burst_mprq; 1606 } 1607 return rx_pkt_burst; 1608 } 1609 1610 /** 1611 * Check if mlx5 device was removed. 1612 * 1613 * @param dev 1614 * Pointer to Ethernet device structure. 1615 * 1616 * @return 1617 * 1 when device is removed, otherwise 0. 1618 */ 1619 int 1620 mlx5_is_removed(struct rte_eth_dev *dev) 1621 { 1622 struct ibv_device_attr device_attr; 1623 struct mlx5_priv *priv = dev->data->dev_private; 1624 1625 if (mlx5_glue->query_device(priv->sh->ctx, &device_attr) == EIO) 1626 return 1; 1627 return 0; 1628 } 1629 1630 /** 1631 * Get port ID list of mlx5 instances sharing a common device. 1632 * 1633 * @param[in] dev 1634 * Device to look for. 1635 * @param[out] port_list 1636 * Result buffer for collected port IDs. 1637 * @param port_list_n 1638 * Maximum number of entries in result buffer. If 0, @p port_list can be 1639 * NULL. 1640 * 1641 * @return 1642 * Number of matching instances regardless of the @p port_list_n 1643 * parameter, 0 if none were found. 1644 */ 1645 unsigned int 1646 mlx5_dev_to_port_id(const struct rte_device *dev, uint16_t *port_list, 1647 unsigned int port_list_n) 1648 { 1649 uint16_t id; 1650 unsigned int n = 0; 1651 1652 RTE_ETH_FOREACH_DEV_OF(id, dev) { 1653 if (n < port_list_n) 1654 port_list[n] = id; 1655 n++; 1656 } 1657 return n; 1658 } 1659 1660 /** 1661 * Get the E-Switch domain id this port belongs to. 1662 * 1663 * @param[in] port 1664 * Device port id. 1665 * @param[out] es_domain_id 1666 * E-Switch domain id. 1667 * @param[out] es_port_id 1668 * The port id of the port in the E-Switch. 1669 * 1670 * @return 1671 * 0 on success, a negative errno value otherwise and rte_errno is set. 1672 */ 1673 int 1674 mlx5_port_to_eswitch_info(uint16_t port, 1675 uint16_t *es_domain_id, uint16_t *es_port_id) 1676 { 1677 struct rte_eth_dev *dev; 1678 struct mlx5_priv *priv; 1679 1680 if (port >= RTE_MAX_ETHPORTS) { 1681 rte_errno = EINVAL; 1682 return -rte_errno; 1683 } 1684 if (!rte_eth_dev_is_valid_port(port)) { 1685 rte_errno = ENODEV; 1686 return -rte_errno; 1687 } 1688 dev = &rte_eth_devices[port]; 1689 priv = dev->data->dev_private; 1690 if (!(priv->representor || priv->master)) { 1691 rte_errno = EINVAL; 1692 return -rte_errno; 1693 } 1694 if (es_domain_id) 1695 *es_domain_id = priv->domain_id; 1696 if (es_port_id) 1697 *es_port_id = priv->vport_id; 1698 return 0; 1699 } 1700 1701 /** 1702 * Get switch information associated with network interface. 1703 * 1704 * @param ifindex 1705 * Network interface index. 1706 * @param[out] info 1707 * Switch information object, populated in case of success. 1708 * 1709 * @return 1710 * 0 on success, a negative errno value otherwise and rte_errno is set. 1711 */ 1712 int 1713 mlx5_sysfs_switch_info(unsigned int ifindex, struct mlx5_switch_info *info) 1714 { 1715 char ifname[IF_NAMESIZE]; 1716 char port_name[IF_NAMESIZE]; 1717 FILE *file; 1718 struct mlx5_switch_info data = { 1719 .master = 0, 1720 .representor = 0, 1721 .name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET, 1722 .port_name = 0, 1723 .switch_id = 0, 1724 }; 1725 DIR *dir; 1726 bool port_switch_id_set = false; 1727 bool device_dir = false; 1728 char c; 1729 int ret; 1730 1731 if (!if_indextoname(ifindex, ifname)) { 1732 rte_errno = errno; 1733 return -rte_errno; 1734 } 1735 1736 MKSTR(phys_port_name, "/sys/class/net/%s/phys_port_name", 1737 ifname); 1738 MKSTR(phys_switch_id, "/sys/class/net/%s/phys_switch_id", 1739 ifname); 1740 MKSTR(pci_device, "/sys/class/net/%s/device", 1741 ifname); 1742 1743 file = fopen(phys_port_name, "rb"); 1744 if (file != NULL) { 1745 ret = fscanf(file, "%s", port_name); 1746 fclose(file); 1747 if (ret == 1) 1748 mlx5_translate_port_name(port_name, &data); 1749 } 1750 file = fopen(phys_switch_id, "rb"); 1751 if (file == NULL) { 1752 rte_errno = errno; 1753 return -rte_errno; 1754 } 1755 port_switch_id_set = 1756 fscanf(file, "%" SCNx64 "%c", &data.switch_id, &c) == 2 && 1757 c == '\n'; 1758 fclose(file); 1759 dir = opendir(pci_device); 1760 if (dir != NULL) { 1761 closedir(dir); 1762 device_dir = true; 1763 } 1764 if (port_switch_id_set) { 1765 /* We have some E-Switch configuration. */ 1766 mlx5_sysfs_check_switch_info(device_dir, &data); 1767 } 1768 *info = data; 1769 assert(!(data.master && data.representor)); 1770 if (data.master && data.representor) { 1771 DRV_LOG(ERR, "ifindex %u device is recognized as master" 1772 " and as representor", ifindex); 1773 rte_errno = ENODEV; 1774 return -rte_errno; 1775 } 1776 return 0; 1777 } 1778 1779 /** 1780 * Analyze gathered port parameters via Netlink to recognize master 1781 * and representor devices for E-Switch configuration. 1782 * 1783 * @param[in] num_vf_set 1784 * flag of presence of number of VFs port attribute. 1785 * @param[inout] switch_info 1786 * Port information, including port name as a number and port name 1787 * type if recognized 1788 * 1789 * @return 1790 * master and representor flags are set in switch_info according to 1791 * recognized parameters (if any). 1792 */ 1793 void 1794 mlx5_nl_check_switch_info(bool num_vf_set, 1795 struct mlx5_switch_info *switch_info) 1796 { 1797 switch (switch_info->name_type) { 1798 case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN: 1799 /* 1800 * Name is not recognized, assume the master, 1801 * check the number of VFs key presence. 1802 */ 1803 switch_info->master = num_vf_set; 1804 break; 1805 case MLX5_PHYS_PORT_NAME_TYPE_NOTSET: 1806 /* 1807 * Name is not set, this assumes the legacy naming 1808 * schema for master, just check if there is a 1809 * number of VFs key. 1810 */ 1811 switch_info->master = num_vf_set; 1812 break; 1813 case MLX5_PHYS_PORT_NAME_TYPE_UPLINK: 1814 /* New uplink naming schema recognized. */ 1815 switch_info->master = 1; 1816 break; 1817 case MLX5_PHYS_PORT_NAME_TYPE_LEGACY: 1818 /* Legacy representors naming schema. */ 1819 switch_info->representor = !num_vf_set; 1820 break; 1821 case MLX5_PHYS_PORT_NAME_TYPE_PFVF: 1822 /* New representors naming schema. */ 1823 switch_info->representor = 1; 1824 break; 1825 } 1826 } 1827 1828 /** 1829 * Analyze gathered port parameters via sysfs to recognize master 1830 * and representor devices for E-Switch configuration. 1831 * 1832 * @param[in] device_dir 1833 * flag of presence of "device" directory under port device key. 1834 * @param[inout] switch_info 1835 * Port information, including port name as a number and port name 1836 * type if recognized 1837 * 1838 * @return 1839 * master and representor flags are set in switch_info according to 1840 * recognized parameters (if any). 1841 */ 1842 void 1843 mlx5_sysfs_check_switch_info(bool device_dir, 1844 struct mlx5_switch_info *switch_info) 1845 { 1846 switch (switch_info->name_type) { 1847 case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN: 1848 /* 1849 * Name is not recognized, assume the master, 1850 * check the device directory presence. 1851 */ 1852 switch_info->master = device_dir; 1853 break; 1854 case MLX5_PHYS_PORT_NAME_TYPE_NOTSET: 1855 /* 1856 * Name is not set, this assumes the legacy naming 1857 * schema for master, just check if there is 1858 * a device directory. 1859 */ 1860 switch_info->master = device_dir; 1861 break; 1862 case MLX5_PHYS_PORT_NAME_TYPE_UPLINK: 1863 /* New uplink naming schema recognized. */ 1864 switch_info->master = 1; 1865 break; 1866 case MLX5_PHYS_PORT_NAME_TYPE_LEGACY: 1867 /* Legacy representors naming schema. */ 1868 switch_info->representor = !device_dir; 1869 break; 1870 case MLX5_PHYS_PORT_NAME_TYPE_PFVF: 1871 /* New representors naming schema. */ 1872 switch_info->representor = 1; 1873 break; 1874 } 1875 } 1876 1877 /** 1878 * Extract port name, as a number, from sysfs or netlink information. 1879 * 1880 * @param[in] port_name_in 1881 * String representing the port name. 1882 * @param[out] port_info_out 1883 * Port information, including port name as a number and port name 1884 * type if recognized 1885 * 1886 * @return 1887 * port_name field set according to recognized name format. 1888 */ 1889 void 1890 mlx5_translate_port_name(const char *port_name_in, 1891 struct mlx5_switch_info *port_info_out) 1892 { 1893 char pf_c1, pf_c2, vf_c1, vf_c2; 1894 char *end; 1895 int sc_items; 1896 1897 /* 1898 * Check for port-name as a string of the form pf0vf0 1899 * (support kernel ver >= 5.0 or OFED ver >= 4.6). 1900 */ 1901 sc_items = sscanf(port_name_in, "%c%c%d%c%c%d", 1902 &pf_c1, &pf_c2, &port_info_out->pf_num, 1903 &vf_c1, &vf_c2, &port_info_out->port_name); 1904 if (sc_items == 6 && 1905 pf_c1 == 'p' && pf_c2 == 'f' && 1906 vf_c1 == 'v' && vf_c2 == 'f') { 1907 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_PFVF; 1908 return; 1909 } 1910 /* 1911 * Check for port-name as a string of the form p0 1912 * (support kernel ver >= 5.0, or OFED ver >= 4.6). 1913 */ 1914 sc_items = sscanf(port_name_in, "%c%d", 1915 &pf_c1, &port_info_out->port_name); 1916 if (sc_items == 2 && pf_c1 == 'p') { 1917 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UPLINK; 1918 return; 1919 } 1920 /* Check for port-name as a number (support kernel ver < 5.0 */ 1921 errno = 0; 1922 port_info_out->port_name = strtol(port_name_in, &end, 0); 1923 if (!errno && 1924 (size_t)(end - port_name_in) == strlen(port_name_in)) { 1925 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_LEGACY; 1926 return; 1927 } 1928 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN; 1929 return; 1930 } 1931