1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright 2015 6WIND S.A. 3 * Copyright 2015 Mellanox. 4 */ 5 6 #define _GNU_SOURCE 7 8 #include <stddef.h> 9 #include <assert.h> 10 #include <inttypes.h> 11 #include <unistd.h> 12 #include <stdint.h> 13 #include <stdio.h> 14 #include <string.h> 15 #include <stdlib.h> 16 #include <errno.h> 17 #include <dirent.h> 18 #include <net/if.h> 19 #include <sys/ioctl.h> 20 #include <sys/socket.h> 21 #include <sys/utsname.h> 22 #include <netinet/in.h> 23 #include <linux/ethtool.h> 24 #include <linux/sockios.h> 25 #include <linux/version.h> 26 #include <fcntl.h> 27 #include <stdalign.h> 28 #include <sys/un.h> 29 30 #include <rte_atomic.h> 31 #include <rte_ethdev_driver.h> 32 #include <rte_bus_pci.h> 33 #include <rte_mbuf.h> 34 #include <rte_common.h> 35 #include <rte_interrupts.h> 36 #include <rte_alarm.h> 37 #include <rte_malloc.h> 38 39 #include "mlx5.h" 40 #include "mlx5_glue.h" 41 #include "mlx5_rxtx.h" 42 #include "mlx5_utils.h" 43 44 /* Add defines in case the running kernel is not the same as user headers. */ 45 #ifndef ETHTOOL_GLINKSETTINGS 46 struct ethtool_link_settings { 47 uint32_t cmd; 48 uint32_t speed; 49 uint8_t duplex; 50 uint8_t port; 51 uint8_t phy_address; 52 uint8_t autoneg; 53 uint8_t mdio_support; 54 uint8_t eth_to_mdix; 55 uint8_t eth_tp_mdix_ctrl; 56 int8_t link_mode_masks_nwords; 57 uint32_t reserved[8]; 58 uint32_t link_mode_masks[]; 59 }; 60 61 #define ETHTOOL_GLINKSETTINGS 0x0000004c 62 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5 63 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6 64 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17 65 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18 66 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19 67 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20 68 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21 69 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22 70 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23 71 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24 72 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25 73 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26 74 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27 75 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28 76 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29 77 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30 78 #endif 79 #ifndef HAVE_ETHTOOL_LINK_MODE_25G 80 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31 81 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32 82 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33 83 #endif 84 #ifndef HAVE_ETHTOOL_LINK_MODE_50G 85 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34 86 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35 87 #endif 88 #ifndef HAVE_ETHTOOL_LINK_MODE_100G 89 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36 90 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37 91 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38 92 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39 93 #endif 94 95 /** 96 * Get interface name from private structure. 97 * 98 * @param[in] priv 99 * Pointer to private structure. 100 * @param[out] ifname 101 * Interface name output buffer. 102 * 103 * @return 104 * 0 on success, -1 on failure and errno is set. 105 */ 106 int 107 priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE]) 108 { 109 DIR *dir; 110 struct dirent *dent; 111 unsigned int dev_type = 0; 112 unsigned int dev_port_prev = ~0u; 113 char match[IF_NAMESIZE] = ""; 114 115 { 116 MKSTR(path, "%s/device/net", priv->ibdev_path); 117 118 dir = opendir(path); 119 if (dir == NULL) 120 return -1; 121 } 122 while ((dent = readdir(dir)) != NULL) { 123 char *name = dent->d_name; 124 FILE *file; 125 unsigned int dev_port; 126 int r; 127 128 if ((name[0] == '.') && 129 ((name[1] == '\0') || 130 ((name[1] == '.') && (name[2] == '\0')))) 131 continue; 132 133 MKSTR(path, "%s/device/net/%s/%s", 134 priv->ibdev_path, name, 135 (dev_type ? "dev_id" : "dev_port")); 136 137 file = fopen(path, "rb"); 138 if (file == NULL) { 139 if (errno != ENOENT) 140 continue; 141 /* 142 * Switch to dev_id when dev_port does not exist as 143 * is the case with Linux kernel versions < 3.15. 144 */ 145 try_dev_id: 146 match[0] = '\0'; 147 if (dev_type) 148 break; 149 dev_type = 1; 150 dev_port_prev = ~0u; 151 rewinddir(dir); 152 continue; 153 } 154 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port); 155 fclose(file); 156 if (r != 1) 157 continue; 158 /* 159 * Switch to dev_id when dev_port returns the same value for 160 * all ports. May happen when using a MOFED release older than 161 * 3.0 with a Linux kernel >= 3.15. 162 */ 163 if (dev_port == dev_port_prev) 164 goto try_dev_id; 165 dev_port_prev = dev_port; 166 if (dev_port == (priv->port - 1u)) 167 snprintf(match, sizeof(match), "%s", name); 168 } 169 closedir(dir); 170 if (match[0] == '\0') 171 return -1; 172 strncpy(*ifname, match, sizeof(*ifname)); 173 return 0; 174 } 175 176 /** 177 * Perform ifreq ioctl() on associated Ethernet device. 178 * 179 * @param[in] priv 180 * Pointer to private structure. 181 * @param req 182 * Request number to pass to ioctl(). 183 * @param[out] ifr 184 * Interface request structure output buffer. 185 * 186 * @return 187 * 0 on success, -1 on failure and errno is set. 188 */ 189 int 190 priv_ifreq(const struct priv *priv, int req, struct ifreq *ifr) 191 { 192 int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP); 193 int ret = -1; 194 195 if (sock == -1) 196 return ret; 197 if (priv_get_ifname(priv, &ifr->ifr_name) == 0) 198 ret = ioctl(sock, req, ifr); 199 close(sock); 200 return ret; 201 } 202 203 /** 204 * Get device MTU. 205 * 206 * @param priv 207 * Pointer to private structure. 208 * @param[out] mtu 209 * MTU value output buffer. 210 * 211 * @return 212 * 0 on success, -1 on failure and errno is set. 213 */ 214 int 215 priv_get_mtu(struct priv *priv, uint16_t *mtu) 216 { 217 struct ifreq request; 218 int ret = priv_ifreq(priv, SIOCGIFMTU, &request); 219 220 if (ret) 221 return ret; 222 *mtu = request.ifr_mtu; 223 return 0; 224 } 225 226 /** 227 * Set device MTU. 228 * 229 * @param priv 230 * Pointer to private structure. 231 * @param mtu 232 * MTU value to set. 233 * 234 * @return 235 * 0 on success, -1 on failure and errno is set. 236 */ 237 static int 238 priv_set_mtu(struct priv *priv, uint16_t mtu) 239 { 240 struct ifreq request = { .ifr_mtu = mtu, }; 241 242 return priv_ifreq(priv, SIOCSIFMTU, &request); 243 } 244 245 /** 246 * Set device flags. 247 * 248 * @param priv 249 * Pointer to private structure. 250 * @param keep 251 * Bitmask for flags that must remain untouched. 252 * @param flags 253 * Bitmask for flags to modify. 254 * 255 * @return 256 * 0 on success, -1 on failure and errno is set. 257 */ 258 int 259 priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags) 260 { 261 struct ifreq request; 262 int ret = priv_ifreq(priv, SIOCGIFFLAGS, &request); 263 264 if (ret) 265 return ret; 266 request.ifr_flags &= keep; 267 request.ifr_flags |= flags & ~keep; 268 return priv_ifreq(priv, SIOCSIFFLAGS, &request); 269 } 270 271 /** 272 * Ethernet device configuration. 273 * 274 * Prepare the driver for a given number of TX and RX queues. 275 * 276 * @param dev 277 * Pointer to Ethernet device structure. 278 * 279 * @return 280 * 0 on success, errno value on failure. 281 */ 282 static int 283 dev_configure(struct rte_eth_dev *dev) 284 { 285 struct priv *priv = dev->data->dev_private; 286 unsigned int rxqs_n = dev->data->nb_rx_queues; 287 unsigned int txqs_n = dev->data->nb_tx_queues; 288 unsigned int i; 289 unsigned int j; 290 unsigned int reta_idx_n; 291 const uint8_t use_app_rss_key = 292 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key; 293 uint64_t supp_tx_offloads = mlx5_priv_get_tx_port_offloads(priv); 294 uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads; 295 uint64_t supp_rx_offloads = 296 (mlx5_priv_get_rx_port_offloads(priv) | 297 mlx5_priv_get_rx_queue_offloads(priv)); 298 uint64_t rx_offloads = dev->data->dev_conf.rxmode.offloads; 299 300 if ((tx_offloads & supp_tx_offloads) != tx_offloads) { 301 ERROR("Some Tx offloads are not supported " 302 "requested 0x%" PRIx64 " supported 0x%" PRIx64, 303 tx_offloads, supp_tx_offloads); 304 return ENOTSUP; 305 } 306 if ((rx_offloads & supp_rx_offloads) != rx_offloads) { 307 ERROR("Some Rx offloads are not supported " 308 "requested 0x%" PRIx64 " supported 0x%" PRIx64, 309 rx_offloads, supp_rx_offloads); 310 return ENOTSUP; 311 } 312 if (use_app_rss_key && 313 (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len != 314 rss_hash_default_key_len)) { 315 /* MLX5 RSS only support 40bytes key. */ 316 return EINVAL; 317 } 318 priv->rss_conf.rss_key = 319 rte_realloc(priv->rss_conf.rss_key, 320 rss_hash_default_key_len, 0); 321 if (!priv->rss_conf.rss_key) { 322 ERROR("cannot allocate RSS hash key memory (%u)", rxqs_n); 323 return ENOMEM; 324 } 325 memcpy(priv->rss_conf.rss_key, 326 use_app_rss_key ? 327 dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key : 328 rss_hash_default_key, 329 rss_hash_default_key_len); 330 priv->rss_conf.rss_key_len = rss_hash_default_key_len; 331 priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf; 332 priv->rxqs = (void *)dev->data->rx_queues; 333 priv->txqs = (void *)dev->data->tx_queues; 334 if (txqs_n != priv->txqs_n) { 335 INFO("%p: TX queues number update: %u -> %u", 336 (void *)dev, priv->txqs_n, txqs_n); 337 priv->txqs_n = txqs_n; 338 } 339 if (rxqs_n > priv->config.ind_table_max_size) { 340 ERROR("cannot handle this many RX queues (%u)", rxqs_n); 341 return EINVAL; 342 } 343 if (rxqs_n == priv->rxqs_n) 344 return 0; 345 INFO("%p: RX queues number update: %u -> %u", 346 (void *)dev, priv->rxqs_n, rxqs_n); 347 priv->rxqs_n = rxqs_n; 348 /* If the requested number of RX queues is not a power of two, use the 349 * maximum indirection table size for better balancing. 350 * The result is always rounded to the next power of two. */ 351 reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ? 352 priv->config.ind_table_max_size : 353 rxqs_n)); 354 if (priv_rss_reta_index_resize(priv, reta_idx_n)) 355 return ENOMEM; 356 /* When the number of RX queues is not a power of two, the remaining 357 * table entries are padded with reused WQs and hashes are not spread 358 * uniformly. */ 359 for (i = 0, j = 0; (i != reta_idx_n); ++i) { 360 (*priv->reta_idx)[i] = j; 361 if (++j == rxqs_n) 362 j = 0; 363 } 364 return 0; 365 } 366 367 /** 368 * DPDK callback for Ethernet device configuration. 369 * 370 * @param dev 371 * Pointer to Ethernet device structure. 372 * 373 * @return 374 * 0 on success, negative errno value on failure. 375 */ 376 int 377 mlx5_dev_configure(struct rte_eth_dev *dev) 378 { 379 struct priv *priv = dev->data->dev_private; 380 int ret; 381 382 priv_lock(priv); 383 ret = dev_configure(dev); 384 assert(ret >= 0); 385 priv_unlock(priv); 386 return -ret; 387 } 388 389 /** 390 * DPDK callback to get information about the device. 391 * 392 * @param dev 393 * Pointer to Ethernet device structure. 394 * @param[out] info 395 * Info structure output buffer. 396 */ 397 void 398 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) 399 { 400 struct priv *priv = dev->data->dev_private; 401 struct mlx5_dev_config *config = &priv->config; 402 unsigned int max; 403 char ifname[IF_NAMESIZE]; 404 405 info->pci_dev = RTE_ETH_DEV_TO_PCI(dev); 406 407 priv_lock(priv); 408 /* FIXME: we should ask the device for these values. */ 409 info->min_rx_bufsize = 32; 410 info->max_rx_pktlen = 65536; 411 /* 412 * Since we need one CQ per QP, the limit is the minimum number 413 * between the two values. 414 */ 415 max = RTE_MIN(priv->device_attr.orig_attr.max_cq, 416 priv->device_attr.orig_attr.max_qp); 417 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */ 418 if (max >= 65535) 419 max = 65535; 420 info->max_rx_queues = max; 421 info->max_tx_queues = max; 422 info->max_mac_addrs = RTE_DIM(priv->mac); 423 info->rx_queue_offload_capa = 424 mlx5_priv_get_rx_queue_offloads(priv); 425 info->rx_offload_capa = (mlx5_priv_get_rx_port_offloads(priv) | 426 info->rx_queue_offload_capa); 427 info->tx_offload_capa = mlx5_priv_get_tx_port_offloads(priv); 428 if (priv_get_ifname(priv, &ifname) == 0) 429 info->if_index = if_nametoindex(ifname); 430 info->reta_size = priv->reta_idx_n ? 431 priv->reta_idx_n : config->ind_table_max_size; 432 info->hash_key_size = priv->rss_conf.rss_key_len; 433 info->speed_capa = priv->link_speed_capa; 434 info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK; 435 priv_unlock(priv); 436 } 437 438 const uint32_t * 439 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev) 440 { 441 static const uint32_t ptypes[] = { 442 /* refers to rxq_cq_to_pkt_type() */ 443 RTE_PTYPE_L2_ETHER, 444 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN, 445 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN, 446 RTE_PTYPE_L4_NONFRAG, 447 RTE_PTYPE_L4_FRAG, 448 RTE_PTYPE_L4_TCP, 449 RTE_PTYPE_L4_UDP, 450 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN, 451 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN, 452 RTE_PTYPE_INNER_L4_NONFRAG, 453 RTE_PTYPE_INNER_L4_FRAG, 454 RTE_PTYPE_INNER_L4_TCP, 455 RTE_PTYPE_INNER_L4_UDP, 456 RTE_PTYPE_UNKNOWN 457 }; 458 459 if (dev->rx_pkt_burst == mlx5_rx_burst || 460 dev->rx_pkt_burst == mlx5_rx_burst_vec) 461 return ptypes; 462 return NULL; 463 } 464 465 /** 466 * DPDK callback to retrieve physical link information. 467 * 468 * @param dev 469 * Pointer to Ethernet device structure. 470 * @param wait_to_complete 471 * Wait for request completion (ignored). 472 */ 473 static int 474 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, int wait_to_complete) 475 { 476 struct priv *priv = dev->data->dev_private; 477 struct ethtool_cmd edata = { 478 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */ 479 }; 480 struct ifreq ifr; 481 struct rte_eth_link dev_link; 482 int link_speed = 0; 483 484 /* priv_lock() is not taken to allow concurrent calls. */ 485 486 (void)wait_to_complete; 487 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) { 488 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno)); 489 return -1; 490 } 491 memset(&dev_link, 0, sizeof(dev_link)); 492 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) && 493 (ifr.ifr_flags & IFF_RUNNING)); 494 ifr.ifr_data = (void *)&edata; 495 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 496 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s", 497 strerror(errno)); 498 return -1; 499 } 500 link_speed = ethtool_cmd_speed(&edata); 501 if (link_speed == -1) 502 dev_link.link_speed = 0; 503 else 504 dev_link.link_speed = link_speed; 505 priv->link_speed_capa = 0; 506 if (edata.supported & SUPPORTED_Autoneg) 507 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 508 if (edata.supported & (SUPPORTED_1000baseT_Full | 509 SUPPORTED_1000baseKX_Full)) 510 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 511 if (edata.supported & SUPPORTED_10000baseKR_Full) 512 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 513 if (edata.supported & (SUPPORTED_40000baseKR4_Full | 514 SUPPORTED_40000baseCR4_Full | 515 SUPPORTED_40000baseSR4_Full | 516 SUPPORTED_40000baseLR4_Full)) 517 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 518 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ? 519 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 520 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 521 ETH_LINK_SPEED_FIXED); 522 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) { 523 /* Link status changed. */ 524 dev->data->dev_link = dev_link; 525 return 0; 526 } 527 /* Link status is still the same. */ 528 return -1; 529 } 530 531 /** 532 * Retrieve physical link information (unlocked version using new ioctl). 533 * 534 * @param dev 535 * Pointer to Ethernet device structure. 536 * @param wait_to_complete 537 * Wait for request completion (ignored). 538 */ 539 static int 540 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete) 541 { 542 struct priv *priv = dev->data->dev_private; 543 struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS }; 544 struct ifreq ifr; 545 struct rte_eth_link dev_link; 546 uint64_t sc; 547 548 (void)wait_to_complete; 549 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) { 550 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno)); 551 return -1; 552 } 553 memset(&dev_link, 0, sizeof(dev_link)); 554 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) && 555 (ifr.ifr_flags & IFF_RUNNING)); 556 ifr.ifr_data = (void *)&gcmd; 557 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 558 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s", 559 strerror(errno)); 560 return -1; 561 } 562 gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords; 563 564 alignas(struct ethtool_link_settings) 565 uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) + 566 sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3]; 567 struct ethtool_link_settings *ecmd = (void *)data; 568 569 *ecmd = gcmd; 570 ifr.ifr_data = (void *)ecmd; 571 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 572 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s", 573 strerror(errno)); 574 return -1; 575 } 576 dev_link.link_speed = ecmd->speed; 577 sc = ecmd->link_mode_masks[0] | 578 ((uint64_t)ecmd->link_mode_masks[1] << 32); 579 priv->link_speed_capa = 0; 580 if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT)) 581 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 582 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) | 583 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT))) 584 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 585 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) | 586 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) | 587 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT))) 588 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 589 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) | 590 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT))) 591 priv->link_speed_capa |= ETH_LINK_SPEED_20G; 592 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) | 593 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) | 594 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) | 595 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT))) 596 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 597 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) | 598 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) | 599 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) | 600 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT))) 601 priv->link_speed_capa |= ETH_LINK_SPEED_56G; 602 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) | 603 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) | 604 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT))) 605 priv->link_speed_capa |= ETH_LINK_SPEED_25G; 606 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) | 607 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT))) 608 priv->link_speed_capa |= ETH_LINK_SPEED_50G; 609 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) | 610 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) | 611 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) | 612 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT))) 613 priv->link_speed_capa |= ETH_LINK_SPEED_100G; 614 dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ? 615 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 616 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 617 ETH_LINK_SPEED_FIXED); 618 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) { 619 /* Link status changed. */ 620 dev->data->dev_link = dev_link; 621 return 0; 622 } 623 /* Link status is still the same. */ 624 return -1; 625 } 626 627 /** 628 * Enable receiving and transmitting traffic. 629 * 630 * @param priv 631 * Pointer to private structure. 632 */ 633 static void 634 priv_link_start(struct priv *priv) 635 { 636 struct rte_eth_dev *dev = priv->dev; 637 int err; 638 639 dev->tx_pkt_burst = priv_select_tx_function(priv, dev); 640 dev->rx_pkt_burst = priv_select_rx_function(priv, dev); 641 err = priv_dev_traffic_enable(priv, dev); 642 if (err) 643 ERROR("%p: error occurred while configuring control flows: %s", 644 (void *)priv, strerror(err)); 645 err = priv_flow_start(priv, &priv->flows); 646 if (err) 647 ERROR("%p: error occurred while configuring flows: %s", 648 (void *)priv, strerror(err)); 649 } 650 651 /** 652 * Disable receiving and transmitting traffic. 653 * 654 * @param priv 655 * Pointer to private structure. 656 */ 657 static void 658 priv_link_stop(struct priv *priv) 659 { 660 struct rte_eth_dev *dev = priv->dev; 661 662 priv_flow_stop(priv, &priv->flows); 663 priv_dev_traffic_disable(priv, dev); 664 dev->rx_pkt_burst = removed_rx_burst; 665 dev->tx_pkt_burst = removed_tx_burst; 666 } 667 668 /** 669 * Retrieve physical link information and update rx/tx_pkt_burst callbacks 670 * accordingly. 671 * 672 * @param priv 673 * Pointer to private structure. 674 * @param wait_to_complete 675 * Wait for request completion (ignored). 676 */ 677 int 678 priv_link_update(struct priv *priv, int wait_to_complete) 679 { 680 struct rte_eth_dev *dev = priv->dev; 681 struct utsname utsname; 682 int ver[3]; 683 int ret; 684 struct rte_eth_link dev_link = dev->data->dev_link; 685 686 if (uname(&utsname) == -1 || 687 sscanf(utsname.release, "%d.%d.%d", 688 &ver[0], &ver[1], &ver[2]) != 3 || 689 KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0)) 690 ret = mlx5_link_update_unlocked_gset(dev, wait_to_complete); 691 else 692 ret = mlx5_link_update_unlocked_gs(dev, wait_to_complete); 693 /* If lsc interrupt is disabled, should always be ready for traffic. */ 694 if (!dev->data->dev_conf.intr_conf.lsc) { 695 priv_link_start(priv); 696 return ret; 697 } 698 /* Re-select burst callbacks only if link status has been changed. */ 699 if (!ret && dev_link.link_status != dev->data->dev_link.link_status) { 700 if (dev->data->dev_link.link_status == ETH_LINK_UP) 701 priv_link_start(priv); 702 else 703 priv_link_stop(priv); 704 } 705 return ret; 706 } 707 708 /** 709 * Querying the link status till it changes to the desired state. 710 * Number of query attempts is bounded by MLX5_MAX_LINK_QUERY_ATTEMPTS. 711 * 712 * @param priv 713 * Pointer to private structure. 714 * @param status 715 * Link desired status. 716 * 717 * @return 718 * 0 on success, negative errno value on failure. 719 */ 720 int 721 priv_force_link_status_change(struct priv *priv, int status) 722 { 723 int try = 0; 724 725 while (try < MLX5_MAX_LINK_QUERY_ATTEMPTS) { 726 priv_link_update(priv, 0); 727 if (priv->dev->data->dev_link.link_status == status) 728 return 0; 729 try++; 730 sleep(1); 731 } 732 return -EAGAIN; 733 } 734 735 /** 736 * DPDK callback to retrieve physical link information. 737 * 738 * @param dev 739 * Pointer to Ethernet device structure. 740 * @param wait_to_complete 741 * Wait for request completion (ignored). 742 */ 743 int 744 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete) 745 { 746 struct priv *priv = dev->data->dev_private; 747 int ret; 748 749 priv_lock(priv); 750 ret = priv_link_update(priv, wait_to_complete); 751 priv_unlock(priv); 752 return ret; 753 } 754 755 /** 756 * DPDK callback to change the MTU. 757 * 758 * @param dev 759 * Pointer to Ethernet device structure. 760 * @param in_mtu 761 * New MTU. 762 * 763 * @return 764 * 0 on success, negative errno value on failure. 765 */ 766 int 767 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu) 768 { 769 struct priv *priv = dev->data->dev_private; 770 uint16_t kern_mtu; 771 int ret = 0; 772 773 priv_lock(priv); 774 ret = priv_get_mtu(priv, &kern_mtu); 775 if (ret) 776 goto out; 777 /* Set kernel interface MTU first. */ 778 ret = priv_set_mtu(priv, mtu); 779 if (ret) 780 goto out; 781 ret = priv_get_mtu(priv, &kern_mtu); 782 if (ret) 783 goto out; 784 if (kern_mtu == mtu) { 785 priv->mtu = mtu; 786 DEBUG("adapter port %u MTU set to %u", priv->port, mtu); 787 } 788 priv_unlock(priv); 789 return 0; 790 out: 791 ret = errno; 792 WARN("cannot set port %u MTU to %u: %s", priv->port, mtu, 793 strerror(ret)); 794 priv_unlock(priv); 795 assert(ret >= 0); 796 return -ret; 797 } 798 799 /** 800 * DPDK callback to get flow control status. 801 * 802 * @param dev 803 * Pointer to Ethernet device structure. 804 * @param[out] fc_conf 805 * Flow control output buffer. 806 * 807 * @return 808 * 0 on success, negative errno value on failure. 809 */ 810 int 811 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 812 { 813 struct priv *priv = dev->data->dev_private; 814 struct ifreq ifr; 815 struct ethtool_pauseparam ethpause = { 816 .cmd = ETHTOOL_GPAUSEPARAM 817 }; 818 int ret; 819 820 ifr.ifr_data = (void *)ðpause; 821 priv_lock(priv); 822 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 823 ret = errno; 824 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)" 825 " failed: %s", 826 strerror(ret)); 827 goto out; 828 } 829 830 fc_conf->autoneg = ethpause.autoneg; 831 if (ethpause.rx_pause && ethpause.tx_pause) 832 fc_conf->mode = RTE_FC_FULL; 833 else if (ethpause.rx_pause) 834 fc_conf->mode = RTE_FC_RX_PAUSE; 835 else if (ethpause.tx_pause) 836 fc_conf->mode = RTE_FC_TX_PAUSE; 837 else 838 fc_conf->mode = RTE_FC_NONE; 839 ret = 0; 840 841 out: 842 priv_unlock(priv); 843 assert(ret >= 0); 844 return -ret; 845 } 846 847 /** 848 * DPDK callback to modify flow control parameters. 849 * 850 * @param dev 851 * Pointer to Ethernet device structure. 852 * @param[in] fc_conf 853 * Flow control parameters. 854 * 855 * @return 856 * 0 on success, negative errno value on failure. 857 */ 858 int 859 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 860 { 861 struct priv *priv = dev->data->dev_private; 862 struct ifreq ifr; 863 struct ethtool_pauseparam ethpause = { 864 .cmd = ETHTOOL_SPAUSEPARAM 865 }; 866 int ret; 867 868 ifr.ifr_data = (void *)ðpause; 869 ethpause.autoneg = fc_conf->autoneg; 870 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 871 (fc_conf->mode & RTE_FC_RX_PAUSE)) 872 ethpause.rx_pause = 1; 873 else 874 ethpause.rx_pause = 0; 875 876 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 877 (fc_conf->mode & RTE_FC_TX_PAUSE)) 878 ethpause.tx_pause = 1; 879 else 880 ethpause.tx_pause = 0; 881 882 priv_lock(priv); 883 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 884 ret = errno; 885 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)" 886 " failed: %s", 887 strerror(ret)); 888 goto out; 889 } 890 ret = 0; 891 892 out: 893 priv_unlock(priv); 894 assert(ret >= 0); 895 return -ret; 896 } 897 898 /** 899 * Get PCI information from struct ibv_device. 900 * 901 * @param device 902 * Pointer to Ethernet device structure. 903 * @param[out] pci_addr 904 * PCI bus address output buffer. 905 * 906 * @return 907 * 0 on success, -1 on failure and errno is set. 908 */ 909 int 910 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device, 911 struct rte_pci_addr *pci_addr) 912 { 913 FILE *file; 914 char line[32]; 915 MKSTR(path, "%s/device/uevent", device->ibdev_path); 916 917 file = fopen(path, "rb"); 918 if (file == NULL) 919 return -1; 920 while (fgets(line, sizeof(line), file) == line) { 921 size_t len = strlen(line); 922 int ret; 923 924 /* Truncate long lines. */ 925 if (len == (sizeof(line) - 1)) 926 while (line[(len - 1)] != '\n') { 927 ret = fgetc(file); 928 if (ret == EOF) 929 break; 930 line[(len - 1)] = ret; 931 } 932 /* Extract information. */ 933 if (sscanf(line, 934 "PCI_SLOT_NAME=" 935 "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n", 936 &pci_addr->domain, 937 &pci_addr->bus, 938 &pci_addr->devid, 939 &pci_addr->function) == 4) { 940 ret = 0; 941 break; 942 } 943 } 944 fclose(file); 945 return 0; 946 } 947 948 /** 949 * Update the link status. 950 * 951 * @param priv 952 * Pointer to private structure. 953 * 954 * @return 955 * Zero if the callback process can be called immediately. 956 */ 957 static int 958 priv_link_status_update(struct priv *priv) 959 { 960 struct rte_eth_link *link = &priv->dev->data->dev_link; 961 962 priv_link_update(priv, 0); 963 if (((link->link_speed == 0) && link->link_status) || 964 ((link->link_speed != 0) && !link->link_status)) { 965 /* 966 * Inconsistent status. Event likely occurred before the 967 * kernel netdevice exposes the new status. 968 */ 969 if (!priv->pending_alarm) { 970 priv->pending_alarm = 1; 971 rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US, 972 mlx5_dev_link_status_handler, 973 priv->dev); 974 } 975 return 1; 976 } else if (unlikely(priv->pending_alarm)) { 977 /* Link interrupt occurred while alarm is already scheduled. */ 978 priv->pending_alarm = 0; 979 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, priv->dev); 980 } 981 return 0; 982 } 983 984 /** 985 * Device status handler. 986 * 987 * @param priv 988 * Pointer to private structure. 989 * @param events 990 * Pointer to event flags holder. 991 * 992 * @return 993 * Events bitmap of callback process which can be called immediately. 994 */ 995 static uint32_t 996 priv_dev_status_handler(struct priv *priv) 997 { 998 struct ibv_async_event event; 999 uint32_t ret = 0; 1000 1001 /* Read all message and acknowledge them. */ 1002 for (;;) { 1003 if (mlx5_glue->get_async_event(priv->ctx, &event)) 1004 break; 1005 if ((event.event_type == IBV_EVENT_PORT_ACTIVE || 1006 event.event_type == IBV_EVENT_PORT_ERR) && 1007 (priv->dev->data->dev_conf.intr_conf.lsc == 1)) 1008 ret |= (1 << RTE_ETH_EVENT_INTR_LSC); 1009 else if (event.event_type == IBV_EVENT_DEVICE_FATAL && 1010 priv->dev->data->dev_conf.intr_conf.rmv == 1) 1011 ret |= (1 << RTE_ETH_EVENT_INTR_RMV); 1012 else 1013 DEBUG("event type %d on port %d not handled", 1014 event.event_type, event.element.port_num); 1015 mlx5_glue->ack_async_event(&event); 1016 } 1017 if (ret & (1 << RTE_ETH_EVENT_INTR_LSC)) 1018 if (priv_link_status_update(priv)) 1019 ret &= ~(1 << RTE_ETH_EVENT_INTR_LSC); 1020 return ret; 1021 } 1022 1023 /** 1024 * Handle delayed link status event. 1025 * 1026 * @param arg 1027 * Registered argument. 1028 */ 1029 void 1030 mlx5_dev_link_status_handler(void *arg) 1031 { 1032 struct rte_eth_dev *dev = arg; 1033 struct priv *priv = dev->data->dev_private; 1034 int ret; 1035 1036 while (!priv_trylock(priv)) { 1037 /* Alarm is being canceled. */ 1038 if (priv->pending_alarm == 0) 1039 return; 1040 rte_pause(); 1041 } 1042 priv->pending_alarm = 0; 1043 ret = priv_link_status_update(priv); 1044 priv_unlock(priv); 1045 if (!ret) 1046 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL); 1047 } 1048 1049 /** 1050 * Handle interrupts from the NIC. 1051 * 1052 * @param[in] intr_handle 1053 * Interrupt handler. 1054 * @param cb_arg 1055 * Callback argument. 1056 */ 1057 void 1058 mlx5_dev_interrupt_handler(void *cb_arg) 1059 { 1060 struct rte_eth_dev *dev = cb_arg; 1061 struct priv *priv = dev->data->dev_private; 1062 uint32_t events; 1063 1064 priv_lock(priv); 1065 events = priv_dev_status_handler(priv); 1066 priv_unlock(priv); 1067 if (events & (1 << RTE_ETH_EVENT_INTR_LSC)) 1068 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL); 1069 if (events & (1 << RTE_ETH_EVENT_INTR_RMV)) 1070 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL); 1071 } 1072 1073 /** 1074 * Handle interrupts from the socket. 1075 * 1076 * @param cb_arg 1077 * Callback argument. 1078 */ 1079 static void 1080 mlx5_dev_handler_socket(void *cb_arg) 1081 { 1082 struct rte_eth_dev *dev = cb_arg; 1083 struct priv *priv = dev->data->dev_private; 1084 1085 priv_lock(priv); 1086 priv_socket_handle(priv); 1087 priv_unlock(priv); 1088 } 1089 1090 /** 1091 * Uninstall interrupt handler. 1092 * 1093 * @param priv 1094 * Pointer to private structure. 1095 * @param dev 1096 * Pointer to the rte_eth_dev structure. 1097 */ 1098 void 1099 priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev) 1100 { 1101 if (dev->data->dev_conf.intr_conf.lsc || 1102 dev->data->dev_conf.intr_conf.rmv) 1103 rte_intr_callback_unregister(&priv->intr_handle, 1104 mlx5_dev_interrupt_handler, dev); 1105 if (priv->primary_socket) 1106 rte_intr_callback_unregister(&priv->intr_handle_socket, 1107 mlx5_dev_handler_socket, dev); 1108 if (priv->pending_alarm) { 1109 priv->pending_alarm = 0; 1110 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev); 1111 } 1112 priv->intr_handle.fd = 0; 1113 priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; 1114 priv->intr_handle_socket.fd = 0; 1115 priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN; 1116 } 1117 1118 /** 1119 * Install interrupt handler. 1120 * 1121 * @param priv 1122 * Pointer to private structure. 1123 * @param dev 1124 * Pointer to the rte_eth_dev structure. 1125 */ 1126 void 1127 priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev) 1128 { 1129 int rc, flags; 1130 1131 assert(priv->ctx->async_fd > 0); 1132 flags = fcntl(priv->ctx->async_fd, F_GETFL); 1133 rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK); 1134 if (rc < 0) { 1135 INFO("failed to change file descriptor async event queue"); 1136 dev->data->dev_conf.intr_conf.lsc = 0; 1137 dev->data->dev_conf.intr_conf.rmv = 0; 1138 } 1139 if (dev->data->dev_conf.intr_conf.lsc || 1140 dev->data->dev_conf.intr_conf.rmv) { 1141 priv->intr_handle.fd = priv->ctx->async_fd; 1142 priv->intr_handle.type = RTE_INTR_HANDLE_EXT; 1143 rte_intr_callback_register(&priv->intr_handle, 1144 mlx5_dev_interrupt_handler, dev); 1145 } 1146 1147 rc = priv_socket_init(priv); 1148 if (!rc && priv->primary_socket) { 1149 priv->intr_handle_socket.fd = priv->primary_socket; 1150 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT; 1151 rte_intr_callback_register(&priv->intr_handle_socket, 1152 mlx5_dev_handler_socket, dev); 1153 } 1154 } 1155 1156 /** 1157 * Change the link state (UP / DOWN). 1158 * 1159 * @param priv 1160 * Pointer to private data structure. 1161 * @param up 1162 * Nonzero for link up, otherwise link down. 1163 * 1164 * @return 1165 * 0 on success, errno value on failure. 1166 */ 1167 static int 1168 priv_dev_set_link(struct priv *priv, int up) 1169 { 1170 return priv_set_flags(priv, ~IFF_UP, up ? IFF_UP : ~IFF_UP); 1171 } 1172 1173 /** 1174 * DPDK callback to bring the link DOWN. 1175 * 1176 * @param dev 1177 * Pointer to Ethernet device structure. 1178 * 1179 * @return 1180 * 0 on success, errno value on failure. 1181 */ 1182 int 1183 mlx5_set_link_down(struct rte_eth_dev *dev) 1184 { 1185 struct priv *priv = dev->data->dev_private; 1186 int err; 1187 1188 priv_lock(priv); 1189 err = priv_dev_set_link(priv, 0); 1190 priv_unlock(priv); 1191 return err; 1192 } 1193 1194 /** 1195 * DPDK callback to bring the link UP. 1196 * 1197 * @param dev 1198 * Pointer to Ethernet device structure. 1199 * 1200 * @return 1201 * 0 on success, errno value on failure. 1202 */ 1203 int 1204 mlx5_set_link_up(struct rte_eth_dev *dev) 1205 { 1206 struct priv *priv = dev->data->dev_private; 1207 int err; 1208 1209 priv_lock(priv); 1210 err = priv_dev_set_link(priv, 1); 1211 priv_unlock(priv); 1212 return err; 1213 } 1214 1215 /** 1216 * Configure the TX function to use. 1217 * 1218 * @param priv 1219 * Pointer to private data structure. 1220 * @param dev 1221 * Pointer to rte_eth_dev structure. 1222 * 1223 * @return 1224 * Pointer to selected Tx burst function. 1225 */ 1226 eth_tx_burst_t 1227 priv_select_tx_function(struct priv *priv, struct rte_eth_dev *dev) 1228 { 1229 eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst; 1230 struct mlx5_dev_config *config = &priv->config; 1231 uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads; 1232 int tso = !!(tx_offloads & (DEV_TX_OFFLOAD_TCP_TSO | 1233 DEV_TX_OFFLOAD_VXLAN_TNL_TSO | 1234 DEV_TX_OFFLOAD_GRE_TNL_TSO)); 1235 int vlan_insert = !!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT); 1236 1237 assert(priv != NULL); 1238 /* Select appropriate TX function. */ 1239 if (vlan_insert || tso) 1240 return tx_pkt_burst; 1241 if (config->mps == MLX5_MPW_ENHANCED) { 1242 if (priv_check_vec_tx_support(priv, dev) > 0) { 1243 if (priv_check_raw_vec_tx_support(priv, dev) > 0) 1244 tx_pkt_burst = mlx5_tx_burst_raw_vec; 1245 else 1246 tx_pkt_burst = mlx5_tx_burst_vec; 1247 DEBUG("selected Enhanced MPW TX vectorized function"); 1248 } else { 1249 tx_pkt_burst = mlx5_tx_burst_empw; 1250 DEBUG("selected Enhanced MPW TX function"); 1251 } 1252 } else if (config->mps && (config->txq_inline > 0)) { 1253 tx_pkt_burst = mlx5_tx_burst_mpw_inline; 1254 DEBUG("selected MPW inline TX function"); 1255 } else if (config->mps) { 1256 tx_pkt_burst = mlx5_tx_burst_mpw; 1257 DEBUG("selected MPW TX function"); 1258 } 1259 return tx_pkt_burst; 1260 } 1261 1262 /** 1263 * Configure the RX function to use. 1264 * 1265 * @param priv 1266 * Pointer to private data structure. 1267 * @param dev 1268 * Pointer to rte_eth_dev structure. 1269 * 1270 * @return 1271 * Pointer to selected Rx burst function. 1272 */ 1273 eth_rx_burst_t 1274 priv_select_rx_function(struct priv *priv, __rte_unused struct rte_eth_dev *dev) 1275 { 1276 eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst; 1277 1278 assert(priv != NULL); 1279 if (priv_check_vec_rx_support(priv) > 0) { 1280 rx_pkt_burst = mlx5_rx_burst_vec; 1281 DEBUG("selected RX vectorized function"); 1282 } 1283 return rx_pkt_burst; 1284 } 1285 1286 /** 1287 * Check if mlx5 device was removed. 1288 * 1289 * @param dev 1290 * Pointer to Ethernet device structure. 1291 * 1292 * @return 1293 * 1 when device is removed, otherwise 0. 1294 */ 1295 int 1296 mlx5_is_removed(struct rte_eth_dev *dev) 1297 { 1298 struct ibv_device_attr device_attr; 1299 struct priv *priv = dev->data->dev_private; 1300 1301 if (mlx5_glue->query_device(priv->ctx, &device_attr) == EIO) 1302 return 1; 1303 return 0; 1304 } 1305