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 } 407 408 if (dev->data->dev_conf.rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) 409 dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_RSS_HASH; 410 411 memcpy(priv->rss_conf.rss_key, 412 use_app_rss_key ? 413 dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key : 414 rss_hash_default_key, 415 MLX5_RSS_HASH_KEY_LEN); 416 priv->rss_conf.rss_key_len = MLX5_RSS_HASH_KEY_LEN; 417 priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf; 418 priv->rxqs = (void *)dev->data->rx_queues; 419 priv->txqs = (void *)dev->data->tx_queues; 420 if (txqs_n != priv->txqs_n) { 421 DRV_LOG(INFO, "port %u Tx queues number update: %u -> %u", 422 dev->data->port_id, priv->txqs_n, txqs_n); 423 priv->txqs_n = txqs_n; 424 } 425 if (rxqs_n > priv->config.ind_table_max_size) { 426 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)", 427 dev->data->port_id, rxqs_n); 428 rte_errno = EINVAL; 429 return -rte_errno; 430 } 431 if (rxqs_n != priv->rxqs_n) { 432 DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u", 433 dev->data->port_id, priv->rxqs_n, rxqs_n); 434 priv->rxqs_n = rxqs_n; 435 } 436 priv->skip_default_rss_reta = 0; 437 ret = mlx5_proc_priv_init(dev); 438 if (ret) 439 return ret; 440 return 0; 441 } 442 443 /** 444 * Configure default RSS reta. 445 * 446 * @param dev 447 * Pointer to Ethernet device structure. 448 * 449 * @return 450 * 0 on success, a negative errno value otherwise and rte_errno is set. 451 */ 452 int 453 mlx5_dev_configure_rss_reta(struct rte_eth_dev *dev) 454 { 455 struct mlx5_priv *priv = dev->data->dev_private; 456 unsigned int rxqs_n = dev->data->nb_rx_queues; 457 unsigned int i; 458 unsigned int j; 459 unsigned int reta_idx_n; 460 int ret = 0; 461 unsigned int *rss_queue_arr = NULL; 462 unsigned int rss_queue_n = 0; 463 464 if (priv->skip_default_rss_reta) 465 return ret; 466 rss_queue_arr = rte_malloc("", rxqs_n * sizeof(unsigned int), 0); 467 if (!rss_queue_arr) { 468 DRV_LOG(ERR, "port %u cannot allocate RSS queue list (%u)", 469 dev->data->port_id, rxqs_n); 470 rte_errno = ENOMEM; 471 return -rte_errno; 472 } 473 for (i = 0, j = 0; i < rxqs_n; i++) { 474 struct mlx5_rxq_data *rxq_data; 475 struct mlx5_rxq_ctrl *rxq_ctrl; 476 477 rxq_data = (*priv->rxqs)[i]; 478 rxq_ctrl = container_of(rxq_data, struct mlx5_rxq_ctrl, rxq); 479 if (rxq_ctrl->type == MLX5_RXQ_TYPE_STANDARD) 480 rss_queue_arr[j++] = i; 481 } 482 rss_queue_n = j; 483 if (rss_queue_n > priv->config.ind_table_max_size) { 484 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)", 485 dev->data->port_id, rss_queue_n); 486 rte_errno = EINVAL; 487 rte_free(rss_queue_arr); 488 return -rte_errno; 489 } 490 DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u", 491 dev->data->port_id, priv->rxqs_n, rxqs_n); 492 priv->rxqs_n = rxqs_n; 493 /* 494 * If the requested number of RX queues is not a power of two, 495 * use the maximum indirection table size for better balancing. 496 * The result is always rounded to the next power of two. 497 */ 498 reta_idx_n = (1 << log2above((rss_queue_n & (rss_queue_n - 1)) ? 499 priv->config.ind_table_max_size : 500 rss_queue_n)); 501 ret = mlx5_rss_reta_index_resize(dev, reta_idx_n); 502 if (ret) { 503 rte_free(rss_queue_arr); 504 return ret; 505 } 506 /* 507 * When the number of RX queues is not a power of two, 508 * the remaining table entries are padded with reused WQs 509 * and hashes are not spread uniformly. 510 */ 511 for (i = 0, j = 0; (i != reta_idx_n); ++i) { 512 (*priv->reta_idx)[i] = rss_queue_arr[j]; 513 if (++j == rss_queue_n) 514 j = 0; 515 } 516 rte_free(rss_queue_arr); 517 return ret; 518 } 519 520 /** 521 * Sets default tuning parameters. 522 * 523 * @param dev 524 * Pointer to Ethernet device. 525 * @param[out] info 526 * Info structure output buffer. 527 */ 528 static void 529 mlx5_set_default_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) 530 { 531 struct mlx5_priv *priv = dev->data->dev_private; 532 533 /* Minimum CPU utilization. */ 534 info->default_rxportconf.ring_size = 256; 535 info->default_txportconf.ring_size = 256; 536 info->default_rxportconf.burst_size = MLX5_RX_DEFAULT_BURST; 537 info->default_txportconf.burst_size = MLX5_TX_DEFAULT_BURST; 538 if (priv->link_speed_capa & ETH_LINK_SPEED_100G) { 539 info->default_rxportconf.nb_queues = 16; 540 info->default_txportconf.nb_queues = 16; 541 if (dev->data->nb_rx_queues > 2 || 542 dev->data->nb_tx_queues > 2) { 543 /* Max Throughput. */ 544 info->default_rxportconf.ring_size = 2048; 545 info->default_txportconf.ring_size = 2048; 546 } 547 } else { 548 info->default_rxportconf.nb_queues = 8; 549 info->default_txportconf.nb_queues = 8; 550 if (dev->data->nb_rx_queues > 2 || 551 dev->data->nb_tx_queues > 2) { 552 /* Max Throughput. */ 553 info->default_rxportconf.ring_size = 4096; 554 info->default_txportconf.ring_size = 4096; 555 } 556 } 557 } 558 559 /** 560 * Sets tx mbuf limiting parameters. 561 * 562 * @param dev 563 * Pointer to Ethernet device. 564 * @param[out] info 565 * Info structure output buffer. 566 */ 567 static void 568 mlx5_set_txlimit_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) 569 { 570 struct mlx5_priv *priv = dev->data->dev_private; 571 struct mlx5_dev_config *config = &priv->config; 572 unsigned int inlen; 573 uint16_t nb_max; 574 575 inlen = (config->txq_inline_max == MLX5_ARG_UNSET) ? 576 MLX5_SEND_DEF_INLINE_LEN : 577 (unsigned int)config->txq_inline_max; 578 assert(config->txq_inline_min >= 0); 579 inlen = RTE_MAX(inlen, (unsigned int)config->txq_inline_min); 580 inlen = RTE_MIN(inlen, MLX5_WQE_SIZE_MAX + 581 MLX5_ESEG_MIN_INLINE_SIZE - 582 MLX5_WQE_CSEG_SIZE - 583 MLX5_WQE_ESEG_SIZE - 584 MLX5_WQE_DSEG_SIZE * 2); 585 nb_max = (MLX5_WQE_SIZE_MAX + 586 MLX5_ESEG_MIN_INLINE_SIZE - 587 MLX5_WQE_CSEG_SIZE - 588 MLX5_WQE_ESEG_SIZE - 589 MLX5_WQE_DSEG_SIZE - 590 inlen) / MLX5_WSEG_SIZE; 591 info->tx_desc_lim.nb_seg_max = nb_max; 592 info->tx_desc_lim.nb_mtu_seg_max = nb_max; 593 } 594 595 /** 596 * DPDK callback to get information about the device. 597 * 598 * @param dev 599 * Pointer to Ethernet device structure. 600 * @param[out] info 601 * Info structure output buffer. 602 */ 603 int 604 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) 605 { 606 struct mlx5_priv *priv = dev->data->dev_private; 607 struct mlx5_dev_config *config = &priv->config; 608 unsigned int max; 609 610 /* FIXME: we should ask the device for these values. */ 611 info->min_rx_bufsize = 32; 612 info->max_rx_pktlen = 65536; 613 info->max_lro_pkt_size = MLX5_MAX_LRO_SIZE; 614 /* 615 * Since we need one CQ per QP, the limit is the minimum number 616 * between the two values. 617 */ 618 max = RTE_MIN(priv->sh->device_attr.orig_attr.max_cq, 619 priv->sh->device_attr.orig_attr.max_qp); 620 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */ 621 if (max >= 65535) 622 max = 65535; 623 info->max_rx_queues = max; 624 info->max_tx_queues = max; 625 info->max_mac_addrs = MLX5_MAX_UC_MAC_ADDRESSES; 626 info->rx_queue_offload_capa = mlx5_get_rx_queue_offloads(dev); 627 info->rx_offload_capa = (mlx5_get_rx_port_offloads() | 628 info->rx_queue_offload_capa); 629 info->tx_offload_capa = mlx5_get_tx_port_offloads(dev); 630 info->if_index = mlx5_ifindex(dev); 631 info->reta_size = priv->reta_idx_n ? 632 priv->reta_idx_n : config->ind_table_max_size; 633 info->hash_key_size = MLX5_RSS_HASH_KEY_LEN; 634 info->speed_capa = priv->link_speed_capa; 635 info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK; 636 mlx5_set_default_params(dev, info); 637 mlx5_set_txlimit_params(dev, info); 638 info->switch_info.name = dev->data->name; 639 info->switch_info.domain_id = priv->domain_id; 640 info->switch_info.port_id = priv->representor_id; 641 if (priv->representor) { 642 uint16_t port_id; 643 644 if (priv->pf_bond >= 0) { 645 /* 646 * Switch port ID is opaque value with driver defined 647 * format. Push the PF index in bonding configurations 648 * in upper four bits of port ID. If we get too many 649 * representors (more than 4K) or PFs (more than 15) 650 * this approach must be reconsidered. 651 */ 652 if ((info->switch_info.port_id >> 653 MLX5_PORT_ID_BONDING_PF_SHIFT) || 654 priv->pf_bond > MLX5_PORT_ID_BONDING_PF_MASK) { 655 DRV_LOG(ERR, "can't update switch port ID" 656 " for bonding device"); 657 assert(false); 658 return -ENODEV; 659 } 660 info->switch_info.port_id |= 661 priv->pf_bond << MLX5_PORT_ID_BONDING_PF_SHIFT; 662 } 663 MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) { 664 struct mlx5_priv *opriv = 665 rte_eth_devices[port_id].data->dev_private; 666 667 if (!opriv || 668 opriv->representor || 669 opriv->sh != priv->sh || 670 opriv->domain_id != priv->domain_id) 671 continue; 672 /* 673 * Override switch name with that of the master 674 * device. 675 */ 676 info->switch_info.name = opriv->dev_data->name; 677 break; 678 } 679 } 680 return 0; 681 } 682 683 /** 684 * Get device current raw clock counter 685 * 686 * @param dev 687 * Pointer to Ethernet device structure. 688 * @param[out] time 689 * Current raw clock counter of the device. 690 * 691 * @return 692 * 0 if the clock has correctly been read 693 * The value of errno in case of error 694 */ 695 int 696 mlx5_read_clock(struct rte_eth_dev *dev, uint64_t *clock) 697 { 698 struct mlx5_priv *priv = dev->data->dev_private; 699 struct ibv_context *ctx = priv->sh->ctx; 700 struct ibv_values_ex values; 701 int err = 0; 702 703 values.comp_mask = IBV_VALUES_MASK_RAW_CLOCK; 704 err = mlx5_glue->query_rt_values_ex(ctx, &values); 705 if (err != 0) { 706 DRV_LOG(WARNING, "Could not query the clock !"); 707 return err; 708 } 709 *clock = values.raw_clock.tv_nsec; 710 return 0; 711 } 712 713 /** 714 * Get firmware version of a device. 715 * 716 * @param dev 717 * Ethernet device port. 718 * @param fw_ver 719 * String output allocated by caller. 720 * @param fw_size 721 * Size of the output string, including terminating null byte. 722 * 723 * @return 724 * 0 on success, or the size of the non truncated string if too big. 725 */ 726 int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size) 727 { 728 struct mlx5_priv *priv = dev->data->dev_private; 729 struct ibv_device_attr *attr = &priv->sh->device_attr.orig_attr; 730 size_t size = strnlen(attr->fw_ver, sizeof(attr->fw_ver)) + 1; 731 732 if (fw_size < size) 733 return size; 734 if (fw_ver != NULL) 735 strlcpy(fw_ver, attr->fw_ver, fw_size); 736 return 0; 737 } 738 739 /** 740 * Get supported packet types. 741 * 742 * @param dev 743 * Pointer to Ethernet device structure. 744 * 745 * @return 746 * A pointer to the supported Packet types array. 747 */ 748 const uint32_t * 749 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev) 750 { 751 static const uint32_t ptypes[] = { 752 /* refers to rxq_cq_to_pkt_type() */ 753 RTE_PTYPE_L2_ETHER, 754 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN, 755 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN, 756 RTE_PTYPE_L4_NONFRAG, 757 RTE_PTYPE_L4_FRAG, 758 RTE_PTYPE_L4_TCP, 759 RTE_PTYPE_L4_UDP, 760 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN, 761 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN, 762 RTE_PTYPE_INNER_L4_NONFRAG, 763 RTE_PTYPE_INNER_L4_FRAG, 764 RTE_PTYPE_INNER_L4_TCP, 765 RTE_PTYPE_INNER_L4_UDP, 766 RTE_PTYPE_UNKNOWN 767 }; 768 769 if (dev->rx_pkt_burst == mlx5_rx_burst || 770 dev->rx_pkt_burst == mlx5_rx_burst_mprq || 771 dev->rx_pkt_burst == mlx5_rx_burst_vec) 772 return ptypes; 773 return NULL; 774 } 775 776 /** 777 * Retrieve the master device for representor in the same switch domain. 778 * 779 * @param dev 780 * Pointer to representor Ethernet device structure. 781 * 782 * @return 783 * Master device structure on success, NULL otherwise. 784 */ 785 786 static struct rte_eth_dev * 787 mlx5_find_master_dev(struct rte_eth_dev *dev) 788 { 789 struct mlx5_priv *priv; 790 uint16_t port_id; 791 uint16_t domain_id; 792 793 priv = dev->data->dev_private; 794 domain_id = priv->domain_id; 795 assert(priv->representor); 796 MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) { 797 struct mlx5_priv *opriv = 798 rte_eth_devices[port_id].data->dev_private; 799 if (opriv && 800 opriv->master && 801 opriv->domain_id == domain_id && 802 opriv->sh == priv->sh) 803 return &rte_eth_devices[port_id]; 804 } 805 return NULL; 806 } 807 808 /** 809 * DPDK callback to retrieve physical link information. 810 * 811 * @param dev 812 * Pointer to Ethernet device structure. 813 * @param[out] link 814 * Storage for current link status. 815 * 816 * @return 817 * 0 on success, a negative errno value otherwise and rte_errno is set. 818 */ 819 static int 820 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, 821 struct rte_eth_link *link) 822 { 823 struct mlx5_priv *priv = dev->data->dev_private; 824 struct ethtool_cmd edata = { 825 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */ 826 }; 827 struct ifreq ifr; 828 struct rte_eth_link dev_link; 829 int link_speed = 0; 830 int ret; 831 832 ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr); 833 if (ret) { 834 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s", 835 dev->data->port_id, strerror(rte_errno)); 836 return ret; 837 } 838 dev_link = (struct rte_eth_link) { 839 .link_status = ((ifr.ifr_flags & IFF_UP) && 840 (ifr.ifr_flags & IFF_RUNNING)), 841 }; 842 ifr = (struct ifreq) { 843 .ifr_data = (void *)&edata, 844 }; 845 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); 846 if (ret) { 847 if (ret == -ENOTSUP && priv->representor) { 848 struct rte_eth_dev *master; 849 850 /* 851 * For representors we can try to inherit link 852 * settings from the master device. Actually 853 * link settings do not make a lot of sense 854 * for representors due to missing physical 855 * link. The old kernel drivers supported 856 * emulated settings query for representors, 857 * the new ones do not, so we have to add 858 * this code for compatibility issues. 859 */ 860 master = mlx5_find_master_dev(dev); 861 if (master) { 862 ifr = (struct ifreq) { 863 .ifr_data = (void *)&edata, 864 }; 865 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr); 866 } 867 } 868 if (ret) { 869 DRV_LOG(WARNING, 870 "port %u ioctl(SIOCETHTOOL," 871 " ETHTOOL_GSET) failed: %s", 872 dev->data->port_id, strerror(rte_errno)); 873 return ret; 874 } 875 } 876 link_speed = ethtool_cmd_speed(&edata); 877 if (link_speed == -1) 878 dev_link.link_speed = ETH_SPEED_NUM_NONE; 879 else 880 dev_link.link_speed = link_speed; 881 priv->link_speed_capa = 0; 882 if (edata.supported & SUPPORTED_Autoneg) 883 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 884 if (edata.supported & (SUPPORTED_1000baseT_Full | 885 SUPPORTED_1000baseKX_Full)) 886 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 887 if (edata.supported & SUPPORTED_10000baseKR_Full) 888 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 889 if (edata.supported & (SUPPORTED_40000baseKR4_Full | 890 SUPPORTED_40000baseCR4_Full | 891 SUPPORTED_40000baseSR4_Full | 892 SUPPORTED_40000baseLR4_Full)) 893 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 894 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ? 895 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 896 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 897 ETH_LINK_SPEED_FIXED); 898 if (((dev_link.link_speed && !dev_link.link_status) || 899 (!dev_link.link_speed && dev_link.link_status))) { 900 rte_errno = EAGAIN; 901 return -rte_errno; 902 } 903 *link = dev_link; 904 return 0; 905 } 906 907 /** 908 * Retrieve physical link information (unlocked version using new ioctl). 909 * 910 * @param dev 911 * Pointer to Ethernet device structure. 912 * @param[out] link 913 * Storage for current link status. 914 * 915 * @return 916 * 0 on success, a negative errno value otherwise and rte_errno is set. 917 */ 918 static int 919 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, 920 struct rte_eth_link *link) 921 922 { 923 struct mlx5_priv *priv = dev->data->dev_private; 924 struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS }; 925 struct ifreq ifr; 926 struct rte_eth_link dev_link; 927 struct rte_eth_dev *master = NULL; 928 uint64_t sc; 929 int ret; 930 931 ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr); 932 if (ret) { 933 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s", 934 dev->data->port_id, strerror(rte_errno)); 935 return ret; 936 } 937 dev_link = (struct rte_eth_link) { 938 .link_status = ((ifr.ifr_flags & IFF_UP) && 939 (ifr.ifr_flags & IFF_RUNNING)), 940 }; 941 ifr = (struct ifreq) { 942 .ifr_data = (void *)&gcmd, 943 }; 944 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); 945 if (ret) { 946 if (ret == -ENOTSUP && priv->representor) { 947 /* 948 * For representors we can try to inherit link 949 * settings from the master device. Actually 950 * link settings do not make a lot of sense 951 * for representors due to missing physical 952 * link. The old kernel drivers supported 953 * emulated settings query for representors, 954 * the new ones do not, so we have to add 955 * this code for compatibility issues. 956 */ 957 master = mlx5_find_master_dev(dev); 958 if (master) { 959 ifr = (struct ifreq) { 960 .ifr_data = (void *)&gcmd, 961 }; 962 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr); 963 } 964 } 965 if (ret) { 966 DRV_LOG(DEBUG, 967 "port %u ioctl(SIOCETHTOOL," 968 " ETHTOOL_GLINKSETTINGS) failed: %s", 969 dev->data->port_id, strerror(rte_errno)); 970 return ret; 971 } 972 973 } 974 gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords; 975 976 alignas(struct ethtool_link_settings) 977 uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) + 978 sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3]; 979 struct ethtool_link_settings *ecmd = (void *)data; 980 981 *ecmd = gcmd; 982 ifr.ifr_data = (void *)ecmd; 983 ret = mlx5_ifreq(master ? master : dev, SIOCETHTOOL, &ifr); 984 if (ret) { 985 DRV_LOG(DEBUG, 986 "port %u ioctl(SIOCETHTOOL," 987 "ETHTOOL_GLINKSETTINGS) failed: %s", 988 dev->data->port_id, strerror(rte_errno)); 989 return ret; 990 } 991 dev_link.link_speed = (ecmd->speed == UINT32_MAX) ? ETH_SPEED_NUM_NONE : 992 ecmd->speed; 993 sc = ecmd->link_mode_masks[0] | 994 ((uint64_t)ecmd->link_mode_masks[1] << 32); 995 priv->link_speed_capa = 0; 996 if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT)) 997 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 998 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) | 999 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT))) 1000 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 1001 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) | 1002 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) | 1003 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT))) 1004 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 1005 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) | 1006 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT))) 1007 priv->link_speed_capa |= ETH_LINK_SPEED_20G; 1008 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) | 1009 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) | 1010 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) | 1011 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT))) 1012 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 1013 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) | 1014 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) | 1015 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) | 1016 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT))) 1017 priv->link_speed_capa |= ETH_LINK_SPEED_56G; 1018 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) | 1019 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) | 1020 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT))) 1021 priv->link_speed_capa |= ETH_LINK_SPEED_25G; 1022 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) | 1023 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT))) 1024 priv->link_speed_capa |= ETH_LINK_SPEED_50G; 1025 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) | 1026 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) | 1027 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) | 1028 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT))) 1029 priv->link_speed_capa |= ETH_LINK_SPEED_100G; 1030 dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ? 1031 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 1032 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 1033 ETH_LINK_SPEED_FIXED); 1034 if (((dev_link.link_speed && !dev_link.link_status) || 1035 (!dev_link.link_speed && dev_link.link_status))) { 1036 rte_errno = EAGAIN; 1037 return -rte_errno; 1038 } 1039 *link = dev_link; 1040 return 0; 1041 } 1042 1043 /** 1044 * DPDK callback to retrieve physical link information. 1045 * 1046 * @param dev 1047 * Pointer to Ethernet device structure. 1048 * @param wait_to_complete 1049 * Wait for request completion. 1050 * 1051 * @return 1052 * 0 if link status was not updated, positive if it was, a negative errno 1053 * value otherwise and rte_errno is set. 1054 */ 1055 int 1056 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete) 1057 { 1058 int ret; 1059 struct rte_eth_link dev_link; 1060 time_t start_time = time(NULL); 1061 int retry = MLX5_GET_LINK_STATUS_RETRY_COUNT; 1062 1063 do { 1064 ret = mlx5_link_update_unlocked_gs(dev, &dev_link); 1065 if (ret == -ENOTSUP) 1066 ret = mlx5_link_update_unlocked_gset(dev, &dev_link); 1067 if (ret == 0) 1068 break; 1069 /* Handle wait to complete situation. */ 1070 if ((wait_to_complete || retry) && ret == -EAGAIN) { 1071 if (abs((int)difftime(time(NULL), start_time)) < 1072 MLX5_LINK_STATUS_TIMEOUT) { 1073 usleep(0); 1074 continue; 1075 } else { 1076 rte_errno = EBUSY; 1077 return -rte_errno; 1078 } 1079 } else if (ret < 0) { 1080 return ret; 1081 } 1082 } while (wait_to_complete || retry-- > 0); 1083 ret = !!memcmp(&dev->data->dev_link, &dev_link, 1084 sizeof(struct rte_eth_link)); 1085 dev->data->dev_link = dev_link; 1086 return ret; 1087 } 1088 1089 /** 1090 * DPDK callback to change the MTU. 1091 * 1092 * @param dev 1093 * Pointer to Ethernet device structure. 1094 * @param in_mtu 1095 * New MTU. 1096 * 1097 * @return 1098 * 0 on success, a negative errno value otherwise and rte_errno is set. 1099 */ 1100 int 1101 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu) 1102 { 1103 struct mlx5_priv *priv = dev->data->dev_private; 1104 uint16_t kern_mtu = 0; 1105 int ret; 1106 1107 ret = mlx5_get_mtu(dev, &kern_mtu); 1108 if (ret) 1109 return ret; 1110 /* Set kernel interface MTU first. */ 1111 ret = mlx5_set_mtu(dev, mtu); 1112 if (ret) 1113 return ret; 1114 ret = mlx5_get_mtu(dev, &kern_mtu); 1115 if (ret) 1116 return ret; 1117 if (kern_mtu == mtu) { 1118 priv->mtu = mtu; 1119 DRV_LOG(DEBUG, "port %u adapter MTU set to %u", 1120 dev->data->port_id, mtu); 1121 return 0; 1122 } 1123 rte_errno = EAGAIN; 1124 return -rte_errno; 1125 } 1126 1127 /** 1128 * DPDK callback to get flow control status. 1129 * 1130 * @param dev 1131 * Pointer to Ethernet device structure. 1132 * @param[out] fc_conf 1133 * Flow control output buffer. 1134 * 1135 * @return 1136 * 0 on success, a negative errno value otherwise and rte_errno is set. 1137 */ 1138 int 1139 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 1140 { 1141 struct ifreq ifr; 1142 struct ethtool_pauseparam ethpause = { 1143 .cmd = ETHTOOL_GPAUSEPARAM 1144 }; 1145 int ret; 1146 1147 ifr.ifr_data = (void *)ðpause; 1148 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); 1149 if (ret) { 1150 DRV_LOG(WARNING, 1151 "port %u ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM) failed:" 1152 " %s", 1153 dev->data->port_id, strerror(rte_errno)); 1154 return ret; 1155 } 1156 fc_conf->autoneg = ethpause.autoneg; 1157 if (ethpause.rx_pause && ethpause.tx_pause) 1158 fc_conf->mode = RTE_FC_FULL; 1159 else if (ethpause.rx_pause) 1160 fc_conf->mode = RTE_FC_RX_PAUSE; 1161 else if (ethpause.tx_pause) 1162 fc_conf->mode = RTE_FC_TX_PAUSE; 1163 else 1164 fc_conf->mode = RTE_FC_NONE; 1165 return 0; 1166 } 1167 1168 /** 1169 * DPDK callback to modify flow control parameters. 1170 * 1171 * @param dev 1172 * Pointer to Ethernet device structure. 1173 * @param[in] fc_conf 1174 * Flow control parameters. 1175 * 1176 * @return 1177 * 0 on success, a negative errno value otherwise and rte_errno is set. 1178 */ 1179 int 1180 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 1181 { 1182 struct ifreq ifr; 1183 struct ethtool_pauseparam ethpause = { 1184 .cmd = ETHTOOL_SPAUSEPARAM 1185 }; 1186 int ret; 1187 1188 ifr.ifr_data = (void *)ðpause; 1189 ethpause.autoneg = fc_conf->autoneg; 1190 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 1191 (fc_conf->mode & RTE_FC_RX_PAUSE)) 1192 ethpause.rx_pause = 1; 1193 else 1194 ethpause.rx_pause = 0; 1195 1196 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 1197 (fc_conf->mode & RTE_FC_TX_PAUSE)) 1198 ethpause.tx_pause = 1; 1199 else 1200 ethpause.tx_pause = 0; 1201 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); 1202 if (ret) { 1203 DRV_LOG(WARNING, 1204 "port %u ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)" 1205 " failed: %s", 1206 dev->data->port_id, strerror(rte_errno)); 1207 return ret; 1208 } 1209 return 0; 1210 } 1211 1212 /** 1213 * Get PCI information by sysfs device path. 1214 * 1215 * @param dev_path 1216 * Pointer to device sysfs folder name. 1217 * @param[out] pci_addr 1218 * PCI bus address output buffer. 1219 * 1220 * @return 1221 * 0 on success, a negative errno value otherwise and rte_errno is set. 1222 */ 1223 int 1224 mlx5_dev_to_pci_addr(const char *dev_path, 1225 struct rte_pci_addr *pci_addr) 1226 { 1227 FILE *file; 1228 char line[32]; 1229 MKSTR(path, "%s/device/uevent", dev_path); 1230 1231 file = fopen(path, "rb"); 1232 if (file == NULL) { 1233 rte_errno = errno; 1234 return -rte_errno; 1235 } 1236 while (fgets(line, sizeof(line), file) == line) { 1237 size_t len = strlen(line); 1238 int ret; 1239 1240 /* Truncate long lines. */ 1241 if (len == (sizeof(line) - 1)) 1242 while (line[(len - 1)] != '\n') { 1243 ret = fgetc(file); 1244 if (ret == EOF) 1245 break; 1246 line[(len - 1)] = ret; 1247 } 1248 /* Extract information. */ 1249 if (sscanf(line, 1250 "PCI_SLOT_NAME=" 1251 "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n", 1252 &pci_addr->domain, 1253 &pci_addr->bus, 1254 &pci_addr->devid, 1255 &pci_addr->function) == 4) { 1256 ret = 0; 1257 break; 1258 } 1259 } 1260 fclose(file); 1261 return 0; 1262 } 1263 1264 /** 1265 * Handle asynchronous removal event for entire multiport device. 1266 * 1267 * @param sh 1268 * Infiniband device shared context. 1269 */ 1270 static void 1271 mlx5_dev_interrupt_device_fatal(struct mlx5_ibv_shared *sh) 1272 { 1273 uint32_t i; 1274 1275 for (i = 0; i < sh->max_port; ++i) { 1276 struct rte_eth_dev *dev; 1277 1278 if (sh->port[i].ih_port_id >= RTE_MAX_ETHPORTS) { 1279 /* 1280 * Or not existing port either no 1281 * handler installed for this port. 1282 */ 1283 continue; 1284 } 1285 dev = &rte_eth_devices[sh->port[i].ih_port_id]; 1286 assert(dev); 1287 if (dev->data->dev_conf.intr_conf.rmv) 1288 _rte_eth_dev_callback_process 1289 (dev, RTE_ETH_EVENT_INTR_RMV, NULL); 1290 } 1291 } 1292 1293 /** 1294 * Handle shared asynchronous events the NIC (removal event 1295 * and link status change). Supports multiport IB device. 1296 * 1297 * @param cb_arg 1298 * Callback argument. 1299 */ 1300 void 1301 mlx5_dev_interrupt_handler(void *cb_arg) 1302 { 1303 struct mlx5_ibv_shared *sh = cb_arg; 1304 struct ibv_async_event event; 1305 1306 /* Read all message from the IB device and acknowledge them. */ 1307 for (;;) { 1308 struct rte_eth_dev *dev; 1309 uint32_t tmp; 1310 1311 if (mlx5_glue->get_async_event(sh->ctx, &event)) 1312 break; 1313 /* Retrieve and check IB port index. */ 1314 tmp = (uint32_t)event.element.port_num; 1315 if (!tmp && event.event_type == IBV_EVENT_DEVICE_FATAL) { 1316 /* 1317 * The DEVICE_FATAL event is called once for 1318 * entire device without port specifying. 1319 * We should notify all existing ports. 1320 */ 1321 mlx5_glue->ack_async_event(&event); 1322 mlx5_dev_interrupt_device_fatal(sh); 1323 continue; 1324 } 1325 assert(tmp && (tmp <= sh->max_port)); 1326 if (!tmp) { 1327 /* Unsupported devive level event. */ 1328 mlx5_glue->ack_async_event(&event); 1329 DRV_LOG(DEBUG, 1330 "unsupported common event (type %d)", 1331 event.event_type); 1332 continue; 1333 } 1334 if (tmp > sh->max_port) { 1335 /* Invalid IB port index. */ 1336 mlx5_glue->ack_async_event(&event); 1337 DRV_LOG(DEBUG, 1338 "cannot handle an event (type %d)" 1339 "due to invalid IB port index (%u)", 1340 event.event_type, tmp); 1341 continue; 1342 } 1343 if (sh->port[tmp - 1].ih_port_id >= RTE_MAX_ETHPORTS) { 1344 /* No handler installed. */ 1345 mlx5_glue->ack_async_event(&event); 1346 DRV_LOG(DEBUG, 1347 "cannot handle an event (type %d)" 1348 "due to no handler installed for port %u", 1349 event.event_type, tmp); 1350 continue; 1351 } 1352 /* Retrieve ethernet device descriptor. */ 1353 tmp = sh->port[tmp - 1].ih_port_id; 1354 dev = &rte_eth_devices[tmp]; 1355 assert(dev); 1356 if ((event.event_type == IBV_EVENT_PORT_ACTIVE || 1357 event.event_type == IBV_EVENT_PORT_ERR) && 1358 dev->data->dev_conf.intr_conf.lsc) { 1359 mlx5_glue->ack_async_event(&event); 1360 if (mlx5_link_update(dev, 0) == -EAGAIN) { 1361 usleep(0); 1362 continue; 1363 } 1364 _rte_eth_dev_callback_process 1365 (dev, RTE_ETH_EVENT_INTR_LSC, NULL); 1366 continue; 1367 } 1368 DRV_LOG(DEBUG, 1369 "port %u cannot handle an unknown event (type %d)", 1370 dev->data->port_id, event.event_type); 1371 mlx5_glue->ack_async_event(&event); 1372 } 1373 } 1374 1375 /* 1376 * Unregister callback handler safely. The handler may be active 1377 * while we are trying to unregister it, in this case code -EAGAIN 1378 * is returned by rte_intr_callback_unregister(). This routine checks 1379 * the return code and tries to unregister handler again. 1380 * 1381 * @param handle 1382 * interrupt handle 1383 * @param cb_fn 1384 * pointer to callback routine 1385 * @cb_arg 1386 * opaque callback parameter 1387 */ 1388 void 1389 mlx5_intr_callback_unregister(const struct rte_intr_handle *handle, 1390 rte_intr_callback_fn cb_fn, void *cb_arg) 1391 { 1392 /* 1393 * Try to reduce timeout management overhead by not calling 1394 * the timer related routines on the first iteration. If the 1395 * unregistering succeeds on first call there will be no 1396 * timer calls at all. 1397 */ 1398 uint64_t twait = 0; 1399 uint64_t start = 0; 1400 1401 do { 1402 int ret; 1403 1404 ret = rte_intr_callback_unregister(handle, cb_fn, cb_arg); 1405 if (ret >= 0) 1406 return; 1407 if (ret != -EAGAIN) { 1408 DRV_LOG(INFO, "failed to unregister interrupt" 1409 " handler (error: %d)", ret); 1410 assert(false); 1411 return; 1412 } 1413 if (twait) { 1414 struct timespec onems; 1415 1416 /* Wait one millisecond and try again. */ 1417 onems.tv_sec = 0; 1418 onems.tv_nsec = NS_PER_S / MS_PER_S; 1419 nanosleep(&onems, 0); 1420 /* Check whether one second elapsed. */ 1421 if ((rte_get_timer_cycles() - start) <= twait) 1422 continue; 1423 } else { 1424 /* 1425 * We get the amount of timer ticks for one second. 1426 * If this amount elapsed it means we spent one 1427 * second in waiting. This branch is executed once 1428 * on first iteration. 1429 */ 1430 twait = rte_get_timer_hz(); 1431 assert(twait); 1432 } 1433 /* 1434 * Timeout elapsed, show message (once a second) and retry. 1435 * We have no other acceptable option here, if we ignore 1436 * the unregistering return code the handler will not 1437 * be unregistered, fd will be closed and we may get the 1438 * crush. Hanging and messaging in the loop seems not to be 1439 * the worst choice. 1440 */ 1441 DRV_LOG(INFO, "Retrying to unregister interrupt handler"); 1442 start = rte_get_timer_cycles(); 1443 } while (true); 1444 } 1445 1446 /** 1447 * Handle DEVX interrupts from the NIC. 1448 * This function is probably called from the DPDK host thread. 1449 * 1450 * @param cb_arg 1451 * Callback argument. 1452 */ 1453 void 1454 mlx5_dev_interrupt_handler_devx(void *cb_arg) 1455 { 1456 #ifndef HAVE_IBV_DEVX_ASYNC 1457 (void)cb_arg; 1458 return; 1459 #else 1460 struct mlx5_ibv_shared *sh = cb_arg; 1461 union { 1462 struct mlx5dv_devx_async_cmd_hdr cmd_resp; 1463 uint8_t buf[MLX5_ST_SZ_BYTES(query_flow_counter_out) + 1464 MLX5_ST_SZ_BYTES(traffic_counter) + 1465 sizeof(struct mlx5dv_devx_async_cmd_hdr)]; 1466 } out; 1467 uint8_t *buf = out.buf + sizeof(out.cmd_resp); 1468 1469 while (!mlx5_glue->devx_get_async_cmd_comp(sh->devx_comp, 1470 &out.cmd_resp, 1471 sizeof(out.buf))) 1472 mlx5_flow_async_pool_query_handle 1473 (sh, (uint64_t)out.cmd_resp.wr_id, 1474 mlx5_devx_get_out_command_status(buf)); 1475 #endif /* HAVE_IBV_DEVX_ASYNC */ 1476 } 1477 1478 /** 1479 * Uninstall shared asynchronous device events handler. 1480 * This function is implemented to support event sharing 1481 * between multiple ports of single IB device. 1482 * 1483 * @param dev 1484 * Pointer to Ethernet device. 1485 */ 1486 static void 1487 mlx5_dev_shared_handler_uninstall(struct rte_eth_dev *dev) 1488 { 1489 struct mlx5_priv *priv = dev->data->dev_private; 1490 struct mlx5_ibv_shared *sh = priv->sh; 1491 1492 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 1493 return; 1494 pthread_mutex_lock(&sh->intr_mutex); 1495 assert(priv->ibv_port); 1496 assert(priv->ibv_port <= sh->max_port); 1497 assert(dev->data->port_id < RTE_MAX_ETHPORTS); 1498 if (sh->port[priv->ibv_port - 1].ih_port_id >= RTE_MAX_ETHPORTS) 1499 goto exit; 1500 assert(sh->port[priv->ibv_port - 1].ih_port_id == 1501 (uint32_t)dev->data->port_id); 1502 assert(sh->intr_cnt); 1503 sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS; 1504 if (!sh->intr_cnt || --sh->intr_cnt) 1505 goto exit; 1506 mlx5_intr_callback_unregister(&sh->intr_handle, 1507 mlx5_dev_interrupt_handler, sh); 1508 sh->intr_handle.fd = 0; 1509 sh->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; 1510 exit: 1511 pthread_mutex_unlock(&sh->intr_mutex); 1512 } 1513 1514 /** 1515 * Uninstall devx shared asynchronous device events handler. 1516 * This function is implemeted to support event sharing 1517 * between multiple ports of single IB device. 1518 * 1519 * @param dev 1520 * Pointer to Ethernet device. 1521 */ 1522 static void 1523 mlx5_dev_shared_handler_devx_uninstall(struct rte_eth_dev *dev) 1524 { 1525 struct mlx5_priv *priv = dev->data->dev_private; 1526 struct mlx5_ibv_shared *sh = priv->sh; 1527 1528 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 1529 return; 1530 pthread_mutex_lock(&sh->intr_mutex); 1531 assert(priv->ibv_port); 1532 assert(priv->ibv_port <= sh->max_port); 1533 assert(dev->data->port_id < RTE_MAX_ETHPORTS); 1534 if (sh->port[priv->ibv_port - 1].devx_ih_port_id >= RTE_MAX_ETHPORTS) 1535 goto exit; 1536 assert(sh->port[priv->ibv_port - 1].devx_ih_port_id == 1537 (uint32_t)dev->data->port_id); 1538 sh->port[priv->ibv_port - 1].devx_ih_port_id = RTE_MAX_ETHPORTS; 1539 if (!sh->devx_intr_cnt || --sh->devx_intr_cnt) 1540 goto exit; 1541 if (sh->intr_handle_devx.fd) { 1542 rte_intr_callback_unregister(&sh->intr_handle_devx, 1543 mlx5_dev_interrupt_handler_devx, 1544 sh); 1545 sh->intr_handle_devx.fd = 0; 1546 sh->intr_handle_devx.type = RTE_INTR_HANDLE_UNKNOWN; 1547 } 1548 if (sh->devx_comp) { 1549 mlx5_glue->devx_destroy_cmd_comp(sh->devx_comp); 1550 sh->devx_comp = NULL; 1551 } 1552 exit: 1553 pthread_mutex_unlock(&sh->intr_mutex); 1554 } 1555 1556 /** 1557 * Install shared asynchronous device events handler. 1558 * This function is implemented to support event sharing 1559 * between multiple ports of single IB device. 1560 * 1561 * @param dev 1562 * Pointer to Ethernet device. 1563 */ 1564 static void 1565 mlx5_dev_shared_handler_install(struct rte_eth_dev *dev) 1566 { 1567 struct mlx5_priv *priv = dev->data->dev_private; 1568 struct mlx5_ibv_shared *sh = priv->sh; 1569 int ret; 1570 int flags; 1571 1572 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 1573 return; 1574 pthread_mutex_lock(&sh->intr_mutex); 1575 assert(priv->ibv_port); 1576 assert(priv->ibv_port <= sh->max_port); 1577 assert(dev->data->port_id < RTE_MAX_ETHPORTS); 1578 if (sh->port[priv->ibv_port - 1].ih_port_id < RTE_MAX_ETHPORTS) { 1579 /* The handler is already installed for this port. */ 1580 assert(sh->intr_cnt); 1581 goto exit; 1582 } 1583 if (sh->intr_cnt) { 1584 sh->port[priv->ibv_port - 1].ih_port_id = 1585 (uint32_t)dev->data->port_id; 1586 sh->intr_cnt++; 1587 goto exit; 1588 } 1589 /* No shared handler installed. */ 1590 assert(sh->ctx->async_fd > 0); 1591 flags = fcntl(sh->ctx->async_fd, F_GETFL); 1592 ret = fcntl(sh->ctx->async_fd, F_SETFL, flags | O_NONBLOCK); 1593 if (ret) { 1594 DRV_LOG(INFO, "failed to change file descriptor async event" 1595 " queue"); 1596 /* Indicate there will be no interrupts. */ 1597 dev->data->dev_conf.intr_conf.lsc = 0; 1598 dev->data->dev_conf.intr_conf.rmv = 0; 1599 } else { 1600 sh->intr_handle.fd = sh->ctx->async_fd; 1601 sh->intr_handle.type = RTE_INTR_HANDLE_EXT; 1602 rte_intr_callback_register(&sh->intr_handle, 1603 mlx5_dev_interrupt_handler, sh); 1604 sh->intr_cnt++; 1605 sh->port[priv->ibv_port - 1].ih_port_id = 1606 (uint32_t)dev->data->port_id; 1607 } 1608 exit: 1609 pthread_mutex_unlock(&sh->intr_mutex); 1610 } 1611 1612 /** 1613 * Install devx shared asyncronous device events handler. 1614 * This function is implemeted to support event sharing 1615 * between multiple ports of single IB device. 1616 * 1617 * @param dev 1618 * Pointer to Ethernet device. 1619 */ 1620 static void 1621 mlx5_dev_shared_handler_devx_install(struct rte_eth_dev *dev) 1622 { 1623 struct mlx5_priv *priv = dev->data->dev_private; 1624 struct mlx5_ibv_shared *sh = priv->sh; 1625 1626 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 1627 return; 1628 pthread_mutex_lock(&sh->intr_mutex); 1629 assert(priv->ibv_port); 1630 assert(priv->ibv_port <= sh->max_port); 1631 assert(dev->data->port_id < RTE_MAX_ETHPORTS); 1632 if (sh->port[priv->ibv_port - 1].devx_ih_port_id < RTE_MAX_ETHPORTS) { 1633 /* The handler is already installed for this port. */ 1634 assert(sh->devx_intr_cnt); 1635 goto exit; 1636 } 1637 if (sh->devx_intr_cnt) { 1638 sh->devx_intr_cnt++; 1639 sh->port[priv->ibv_port - 1].devx_ih_port_id = 1640 (uint32_t)dev->data->port_id; 1641 goto exit; 1642 } 1643 if (priv->config.devx) { 1644 #ifndef HAVE_IBV_DEVX_ASYNC 1645 goto exit; 1646 #else 1647 sh->devx_comp = mlx5_glue->devx_create_cmd_comp(sh->ctx); 1648 if (sh->devx_comp) { 1649 int flags = fcntl(sh->devx_comp->fd, F_GETFL); 1650 int ret = fcntl(sh->devx_comp->fd, F_SETFL, 1651 flags | O_NONBLOCK); 1652 1653 if (ret) { 1654 DRV_LOG(INFO, "failed to change file descriptor" 1655 " devx async event queue"); 1656 } else { 1657 sh->intr_handle_devx.fd = sh->devx_comp->fd; 1658 sh->intr_handle_devx.type = RTE_INTR_HANDLE_EXT; 1659 rte_intr_callback_register 1660 (&sh->intr_handle_devx, 1661 mlx5_dev_interrupt_handler_devx, sh); 1662 sh->devx_intr_cnt++; 1663 sh->port[priv->ibv_port - 1].devx_ih_port_id = 1664 (uint32_t)dev->data->port_id; 1665 } 1666 } 1667 #endif /* HAVE_IBV_DEVX_ASYNC */ 1668 } 1669 exit: 1670 pthread_mutex_unlock(&sh->intr_mutex); 1671 } 1672 1673 /** 1674 * Uninstall interrupt handler. 1675 * 1676 * @param dev 1677 * Pointer to Ethernet device. 1678 */ 1679 void 1680 mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev) 1681 { 1682 mlx5_dev_shared_handler_uninstall(dev); 1683 } 1684 1685 /** 1686 * Install interrupt handler. 1687 * 1688 * @param dev 1689 * Pointer to Ethernet device. 1690 */ 1691 void 1692 mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev) 1693 { 1694 mlx5_dev_shared_handler_install(dev); 1695 } 1696 1697 /** 1698 * Devx uninstall interrupt handler. 1699 * 1700 * @param dev 1701 * Pointer to Ethernet device. 1702 */ 1703 void 1704 mlx5_dev_interrupt_handler_devx_uninstall(struct rte_eth_dev *dev) 1705 { 1706 mlx5_dev_shared_handler_devx_uninstall(dev); 1707 } 1708 1709 /** 1710 * Devx install interrupt handler. 1711 * 1712 * @param dev 1713 * Pointer to Ethernet device. 1714 */ 1715 void 1716 mlx5_dev_interrupt_handler_devx_install(struct rte_eth_dev *dev) 1717 { 1718 mlx5_dev_shared_handler_devx_install(dev); 1719 } 1720 1721 /** 1722 * DPDK callback to bring the link DOWN. 1723 * 1724 * @param dev 1725 * Pointer to Ethernet device structure. 1726 * 1727 * @return 1728 * 0 on success, a negative errno value otherwise and rte_errno is set. 1729 */ 1730 int 1731 mlx5_set_link_down(struct rte_eth_dev *dev) 1732 { 1733 return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP); 1734 } 1735 1736 /** 1737 * DPDK callback to bring the link UP. 1738 * 1739 * @param dev 1740 * Pointer to Ethernet device structure. 1741 * 1742 * @return 1743 * 0 on success, a negative errno value otherwise and rte_errno is set. 1744 */ 1745 int 1746 mlx5_set_link_up(struct rte_eth_dev *dev) 1747 { 1748 return mlx5_set_flags(dev, ~IFF_UP, IFF_UP); 1749 } 1750 1751 /** 1752 * Configure the RX function to use. 1753 * 1754 * @param dev 1755 * Pointer to private data structure. 1756 * 1757 * @return 1758 * Pointer to selected Rx burst function. 1759 */ 1760 eth_rx_burst_t 1761 mlx5_select_rx_function(struct rte_eth_dev *dev) 1762 { 1763 eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst; 1764 1765 assert(dev != NULL); 1766 if (mlx5_check_vec_rx_support(dev) > 0) { 1767 rx_pkt_burst = mlx5_rx_burst_vec; 1768 DRV_LOG(DEBUG, "port %u selected Rx vectorized function", 1769 dev->data->port_id); 1770 } else if (mlx5_mprq_enabled(dev)) { 1771 rx_pkt_burst = mlx5_rx_burst_mprq; 1772 } 1773 return rx_pkt_burst; 1774 } 1775 1776 /** 1777 * Check if mlx5 device was removed. 1778 * 1779 * @param dev 1780 * Pointer to Ethernet device structure. 1781 * 1782 * @return 1783 * 1 when device is removed, otherwise 0. 1784 */ 1785 int 1786 mlx5_is_removed(struct rte_eth_dev *dev) 1787 { 1788 struct ibv_device_attr device_attr; 1789 struct mlx5_priv *priv = dev->data->dev_private; 1790 1791 if (mlx5_glue->query_device(priv->sh->ctx, &device_attr) == EIO) 1792 return 1; 1793 return 0; 1794 } 1795 1796 /** 1797 * Get the E-Switch parameters by port id. 1798 * 1799 * @param[in] port 1800 * Device port id. 1801 * @param[in] valid 1802 * Device port id is valid, skip check. This flag is useful 1803 * when trials are performed from probing and device is not 1804 * flagged as valid yet (in attaching process). 1805 * @param[out] es_domain_id 1806 * E-Switch domain id. 1807 * @param[out] es_port_id 1808 * The port id of the port in the E-Switch. 1809 * 1810 * @return 1811 * pointer to device private data structure containing data needed 1812 * on success, NULL otherwise and rte_errno is set. 1813 */ 1814 struct mlx5_priv * 1815 mlx5_port_to_eswitch_info(uint16_t port, bool valid) 1816 { 1817 struct rte_eth_dev *dev; 1818 struct mlx5_priv *priv; 1819 1820 if (port >= RTE_MAX_ETHPORTS) { 1821 rte_errno = EINVAL; 1822 return NULL; 1823 } 1824 if (!valid && !rte_eth_dev_is_valid_port(port)) { 1825 rte_errno = ENODEV; 1826 return NULL; 1827 } 1828 dev = &rte_eth_devices[port]; 1829 priv = dev->data->dev_private; 1830 if (!(priv->representor || priv->master)) { 1831 rte_errno = EINVAL; 1832 return NULL; 1833 } 1834 return priv; 1835 } 1836 1837 /** 1838 * Get the E-Switch parameters by device instance. 1839 * 1840 * @param[in] port 1841 * Device port id. 1842 * @param[out] es_domain_id 1843 * E-Switch domain id. 1844 * @param[out] es_port_id 1845 * The port id of the port in the E-Switch. 1846 * 1847 * @return 1848 * pointer to device private data structure containing data needed 1849 * on success, NULL otherwise and rte_errno is set. 1850 */ 1851 struct mlx5_priv * 1852 mlx5_dev_to_eswitch_info(struct rte_eth_dev *dev) 1853 { 1854 struct mlx5_priv *priv; 1855 1856 priv = dev->data->dev_private; 1857 if (!(priv->representor || priv->master)) { 1858 rte_errno = EINVAL; 1859 return NULL; 1860 } 1861 return priv; 1862 } 1863 1864 /** 1865 * Get switch information associated with network interface. 1866 * 1867 * @param ifindex 1868 * Network interface index. 1869 * @param[out] info 1870 * Switch information object, populated in case of success. 1871 * 1872 * @return 1873 * 0 on success, a negative errno value otherwise and rte_errno is set. 1874 */ 1875 int 1876 mlx5_sysfs_switch_info(unsigned int ifindex, struct mlx5_switch_info *info) 1877 { 1878 char ifname[IF_NAMESIZE]; 1879 char port_name[IF_NAMESIZE]; 1880 FILE *file; 1881 struct mlx5_switch_info data = { 1882 .master = 0, 1883 .representor = 0, 1884 .name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET, 1885 .port_name = 0, 1886 .switch_id = 0, 1887 }; 1888 DIR *dir; 1889 bool port_switch_id_set = false; 1890 bool device_dir = false; 1891 char c; 1892 int ret; 1893 1894 if (!if_indextoname(ifindex, ifname)) { 1895 rte_errno = errno; 1896 return -rte_errno; 1897 } 1898 1899 MKSTR(phys_port_name, "/sys/class/net/%s/phys_port_name", 1900 ifname); 1901 MKSTR(phys_switch_id, "/sys/class/net/%s/phys_switch_id", 1902 ifname); 1903 MKSTR(pci_device, "/sys/class/net/%s/device", 1904 ifname); 1905 1906 file = fopen(phys_port_name, "rb"); 1907 if (file != NULL) { 1908 ret = fscanf(file, "%s", port_name); 1909 fclose(file); 1910 if (ret == 1) 1911 mlx5_translate_port_name(port_name, &data); 1912 } 1913 file = fopen(phys_switch_id, "rb"); 1914 if (file == NULL) { 1915 rte_errno = errno; 1916 return -rte_errno; 1917 } 1918 port_switch_id_set = 1919 fscanf(file, "%" SCNx64 "%c", &data.switch_id, &c) == 2 && 1920 c == '\n'; 1921 fclose(file); 1922 dir = opendir(pci_device); 1923 if (dir != NULL) { 1924 closedir(dir); 1925 device_dir = true; 1926 } 1927 if (port_switch_id_set) { 1928 /* We have some E-Switch configuration. */ 1929 mlx5_sysfs_check_switch_info(device_dir, &data); 1930 } 1931 *info = data; 1932 assert(!(data.master && data.representor)); 1933 if (data.master && data.representor) { 1934 DRV_LOG(ERR, "ifindex %u device is recognized as master" 1935 " and as representor", ifindex); 1936 rte_errno = ENODEV; 1937 return -rte_errno; 1938 } 1939 return 0; 1940 } 1941 1942 /** 1943 * Analyze gathered port parameters via Netlink to recognize master 1944 * and representor devices for E-Switch configuration. 1945 * 1946 * @param[in] num_vf_set 1947 * flag of presence of number of VFs port attribute. 1948 * @param[inout] switch_info 1949 * Port information, including port name as a number and port name 1950 * type if recognized 1951 * 1952 * @return 1953 * master and representor flags are set in switch_info according to 1954 * recognized parameters (if any). 1955 */ 1956 void 1957 mlx5_nl_check_switch_info(bool num_vf_set, 1958 struct mlx5_switch_info *switch_info) 1959 { 1960 switch (switch_info->name_type) { 1961 case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN: 1962 /* 1963 * Name is not recognized, assume the master, 1964 * check the number of VFs key presence. 1965 */ 1966 switch_info->master = num_vf_set; 1967 break; 1968 case MLX5_PHYS_PORT_NAME_TYPE_NOTSET: 1969 /* 1970 * Name is not set, this assumes the legacy naming 1971 * schema for master, just check if there is a 1972 * number of VFs key. 1973 */ 1974 switch_info->master = num_vf_set; 1975 break; 1976 case MLX5_PHYS_PORT_NAME_TYPE_UPLINK: 1977 /* New uplink naming schema recognized. */ 1978 switch_info->master = 1; 1979 break; 1980 case MLX5_PHYS_PORT_NAME_TYPE_LEGACY: 1981 /* Legacy representors naming schema. */ 1982 switch_info->representor = !num_vf_set; 1983 break; 1984 case MLX5_PHYS_PORT_NAME_TYPE_PFVF: 1985 /* New representors naming schema. */ 1986 switch_info->representor = 1; 1987 break; 1988 } 1989 } 1990 1991 /** 1992 * Analyze gathered port parameters via sysfs to recognize master 1993 * and representor devices for E-Switch configuration. 1994 * 1995 * @param[in] device_dir 1996 * flag of presence of "device" directory under port device key. 1997 * @param[inout] switch_info 1998 * Port information, including port name as a number and port name 1999 * type if recognized 2000 * 2001 * @return 2002 * master and representor flags are set in switch_info according to 2003 * recognized parameters (if any). 2004 */ 2005 void 2006 mlx5_sysfs_check_switch_info(bool device_dir, 2007 struct mlx5_switch_info *switch_info) 2008 { 2009 switch (switch_info->name_type) { 2010 case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN: 2011 /* 2012 * Name is not recognized, assume the master, 2013 * check the device directory presence. 2014 */ 2015 switch_info->master = device_dir; 2016 break; 2017 case MLX5_PHYS_PORT_NAME_TYPE_NOTSET: 2018 /* 2019 * Name is not set, this assumes the legacy naming 2020 * schema for master, just check if there is 2021 * a device directory. 2022 */ 2023 switch_info->master = device_dir; 2024 break; 2025 case MLX5_PHYS_PORT_NAME_TYPE_UPLINK: 2026 /* New uplink naming schema recognized. */ 2027 switch_info->master = 1; 2028 break; 2029 case MLX5_PHYS_PORT_NAME_TYPE_LEGACY: 2030 /* Legacy representors naming schema. */ 2031 switch_info->representor = !device_dir; 2032 break; 2033 case MLX5_PHYS_PORT_NAME_TYPE_PFVF: 2034 /* New representors naming schema. */ 2035 switch_info->representor = 1; 2036 break; 2037 } 2038 } 2039 2040 /** 2041 * Extract port name, as a number, from sysfs or netlink information. 2042 * 2043 * @param[in] port_name_in 2044 * String representing the port name. 2045 * @param[out] port_info_out 2046 * Port information, including port name as a number and port name 2047 * type if recognized 2048 * 2049 * @return 2050 * port_name field set according to recognized name format. 2051 */ 2052 void 2053 mlx5_translate_port_name(const char *port_name_in, 2054 struct mlx5_switch_info *port_info_out) 2055 { 2056 char pf_c1, pf_c2, vf_c1, vf_c2; 2057 char *end; 2058 int sc_items; 2059 2060 /* 2061 * Check for port-name as a string of the form pf0vf0 2062 * (support kernel ver >= 5.0 or OFED ver >= 4.6). 2063 */ 2064 sc_items = sscanf(port_name_in, "%c%c%d%c%c%d", 2065 &pf_c1, &pf_c2, &port_info_out->pf_num, 2066 &vf_c1, &vf_c2, &port_info_out->port_name); 2067 if (sc_items == 6 && 2068 pf_c1 == 'p' && pf_c2 == 'f' && 2069 vf_c1 == 'v' && vf_c2 == 'f') { 2070 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_PFVF; 2071 return; 2072 } 2073 /* 2074 * Check for port-name as a string of the form p0 2075 * (support kernel ver >= 5.0, or OFED ver >= 4.6). 2076 */ 2077 sc_items = sscanf(port_name_in, "%c%d", 2078 &pf_c1, &port_info_out->port_name); 2079 if (sc_items == 2 && pf_c1 == 'p') { 2080 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UPLINK; 2081 return; 2082 } 2083 /* Check for port-name as a number (support kernel ver < 5.0 */ 2084 errno = 0; 2085 port_info_out->port_name = strtol(port_name_in, &end, 0); 2086 if (!errno && 2087 (size_t)(end - port_name_in) == strlen(port_name_in)) { 2088 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_LEGACY; 2089 return; 2090 } 2091 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN; 2092 return; 2093 } 2094 2095 /** 2096 * DPDK callback to retrieve plug-in module EEPROM information (type and size). 2097 * 2098 * @param dev 2099 * Pointer to Ethernet device structure. 2100 * @param[out] modinfo 2101 * Storage for plug-in module EEPROM information. 2102 * 2103 * @return 2104 * 0 on success, a negative errno value otherwise and rte_errno is set. 2105 */ 2106 int 2107 mlx5_get_module_info(struct rte_eth_dev *dev, 2108 struct rte_eth_dev_module_info *modinfo) 2109 { 2110 struct ethtool_modinfo info = { 2111 .cmd = ETHTOOL_GMODULEINFO, 2112 }; 2113 struct ifreq ifr = (struct ifreq) { 2114 .ifr_data = (void *)&info, 2115 }; 2116 int ret = 0; 2117 2118 if (!dev || !modinfo) { 2119 DRV_LOG(WARNING, "missing argument, cannot get module info"); 2120 rte_errno = EINVAL; 2121 return -rte_errno; 2122 } 2123 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); 2124 if (ret) { 2125 DRV_LOG(WARNING, "port %u ioctl(SIOCETHTOOL) failed: %s", 2126 dev->data->port_id, strerror(rte_errno)); 2127 return ret; 2128 } 2129 modinfo->type = info.type; 2130 modinfo->eeprom_len = info.eeprom_len; 2131 return ret; 2132 } 2133 2134 /** 2135 * DPDK callback to retrieve plug-in module EEPROM data. 2136 * 2137 * @param dev 2138 * Pointer to Ethernet device structure. 2139 * @param[out] info 2140 * Storage for plug-in module EEPROM data. 2141 * 2142 * @return 2143 * 0 on success, a negative errno value otherwise and rte_errno is set. 2144 */ 2145 int mlx5_get_module_eeprom(struct rte_eth_dev *dev, 2146 struct rte_dev_eeprom_info *info) 2147 { 2148 struct ethtool_eeprom *eeprom; 2149 struct ifreq ifr; 2150 int ret = 0; 2151 2152 if (!dev || !info) { 2153 DRV_LOG(WARNING, "missing argument, cannot get module eeprom"); 2154 rte_errno = EINVAL; 2155 return -rte_errno; 2156 } 2157 eeprom = rte_calloc(__func__, 1, 2158 (sizeof(struct ethtool_eeprom) + info->length), 0); 2159 if (!eeprom) { 2160 DRV_LOG(WARNING, "port %u cannot allocate memory for " 2161 "eeprom data", dev->data->port_id); 2162 rte_errno = ENOMEM; 2163 return -rte_errno; 2164 } 2165 eeprom->cmd = ETHTOOL_GMODULEEEPROM; 2166 eeprom->offset = info->offset; 2167 eeprom->len = info->length; 2168 ifr = (struct ifreq) { 2169 .ifr_data = (void *)eeprom, 2170 }; 2171 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); 2172 if (ret) 2173 DRV_LOG(WARNING, "port %u ioctl(SIOCETHTOOL) failed: %s", 2174 dev->data->port_id, strerror(rte_errno)); 2175 else 2176 rte_memcpy(info->data, eeprom->data, info->length); 2177 rte_free(eeprom); 2178 return ret; 2179 } 2180 2181 /** 2182 * DPDK callback to retrieve hairpin capabilities. 2183 * 2184 * @param dev 2185 * Pointer to Ethernet device structure. 2186 * @param[out] cap 2187 * Storage for hairpin capability data. 2188 * 2189 * @return 2190 * 0 on success, a negative errno value otherwise and rte_errno is set. 2191 */ 2192 int mlx5_hairpin_cap_get(struct rte_eth_dev *dev, 2193 struct rte_eth_hairpin_cap *cap) 2194 { 2195 struct mlx5_priv *priv = dev->data->dev_private; 2196 2197 if (priv->sh->devx == 0) { 2198 rte_errno = ENOTSUP; 2199 return -rte_errno; 2200 } 2201 cap->max_nb_queues = UINT16_MAX; 2202 cap->max_rx_2_tx = 1; 2203 cap->max_tx_2_rx = 1; 2204 cap->max_nb_desc = 8192; 2205 return 0; 2206 } 2207