1 /*- 2 * BSD LICENSE 3 * 4 * Copyright 2015 6WIND S.A. 5 * Copyright 2015 Mellanox. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of 6WIND S.A. nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #define _GNU_SOURCE 35 36 #include <stddef.h> 37 #include <assert.h> 38 #include <unistd.h> 39 #include <stdint.h> 40 #include <stdio.h> 41 #include <string.h> 42 #include <stdlib.h> 43 #include <errno.h> 44 #include <dirent.h> 45 #include <net/if.h> 46 #include <sys/ioctl.h> 47 #include <sys/socket.h> 48 #include <sys/utsname.h> 49 #include <netinet/in.h> 50 #include <linux/ethtool.h> 51 #include <linux/sockios.h> 52 #include <linux/version.h> 53 #include <fcntl.h> 54 #include <stdalign.h> 55 #include <sys/un.h> 56 57 #include <rte_atomic.h> 58 #include <rte_ethdev.h> 59 #include <rte_bus_pci.h> 60 #include <rte_mbuf.h> 61 #include <rte_common.h> 62 #include <rte_interrupts.h> 63 #include <rte_alarm.h> 64 #include <rte_malloc.h> 65 66 #include "mlx5.h" 67 #include "mlx5_rxtx.h" 68 #include "mlx5_utils.h" 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 interface name from private structure. 123 * 124 * @param[in] priv 125 * Pointer to private structure. 126 * @param[out] ifname 127 * Interface name output buffer. 128 * 129 * @return 130 * 0 on success, -1 on failure and errno is set. 131 */ 132 int 133 priv_get_ifname(const struct priv *priv, 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 { 142 MKSTR(path, "%s/device/net", priv->ibdev_path); 143 144 dir = opendir(path); 145 if (dir == NULL) 146 return -1; 147 } 148 while ((dent = readdir(dir)) != NULL) { 149 char *name = dent->d_name; 150 FILE *file; 151 unsigned int dev_port; 152 int r; 153 154 if ((name[0] == '.') && 155 ((name[1] == '\0') || 156 ((name[1] == '.') && (name[2] == '\0')))) 157 continue; 158 159 MKSTR(path, "%s/device/net/%s/%s", 160 priv->ibdev_path, name, 161 (dev_type ? "dev_id" : "dev_port")); 162 163 file = fopen(path, "rb"); 164 if (file == NULL) { 165 if (errno != ENOENT) 166 continue; 167 /* 168 * Switch to dev_id when dev_port does not exist as 169 * is the case with Linux kernel versions < 3.15. 170 */ 171 try_dev_id: 172 match[0] = '\0'; 173 if (dev_type) 174 break; 175 dev_type = 1; 176 dev_port_prev = ~0u; 177 rewinddir(dir); 178 continue; 179 } 180 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port); 181 fclose(file); 182 if (r != 1) 183 continue; 184 /* 185 * Switch to dev_id when dev_port returns the same value for 186 * all ports. May happen when using a MOFED release older than 187 * 3.0 with a Linux kernel >= 3.15. 188 */ 189 if (dev_port == dev_port_prev) 190 goto try_dev_id; 191 dev_port_prev = dev_port; 192 if (dev_port == (priv->port - 1u)) 193 snprintf(match, sizeof(match), "%s", name); 194 } 195 closedir(dir); 196 if (match[0] == '\0') 197 return -1; 198 strncpy(*ifname, match, sizeof(*ifname)); 199 return 0; 200 } 201 202 /** 203 * Check if the counter is located on ib counters file. 204 * 205 * @param[in] cntr 206 * Counter name. 207 * 208 * @return 209 * 1 if counter is located on ib counters file , 0 otherwise. 210 */ 211 int 212 priv_is_ib_cntr(const char *cntr) 213 { 214 if (!strcmp(cntr, "out_of_buffer")) 215 return 1; 216 return 0; 217 } 218 219 /** 220 * Read from sysfs entry. 221 * 222 * @param[in] priv 223 * Pointer to private structure. 224 * @param[in] entry 225 * Entry name relative to sysfs path. 226 * @param[out] buf 227 * Data output buffer. 228 * @param size 229 * Buffer size. 230 * 231 * @return 232 * 0 on success, -1 on failure and errno is set. 233 */ 234 static int 235 priv_sysfs_read(const struct priv *priv, const char *entry, 236 char *buf, size_t size) 237 { 238 char ifname[IF_NAMESIZE]; 239 FILE *file; 240 int ret; 241 int err; 242 243 if (priv_get_ifname(priv, &ifname)) 244 return -1; 245 246 if (priv_is_ib_cntr(entry)) { 247 MKSTR(path, "%s/ports/1/hw_counters/%s", 248 priv->ibdev_path, entry); 249 file = fopen(path, "rb"); 250 } else { 251 MKSTR(path, "%s/device/net/%s/%s", 252 priv->ibdev_path, ifname, entry); 253 file = fopen(path, "rb"); 254 } 255 if (file == NULL) 256 return -1; 257 ret = fread(buf, 1, size, file); 258 err = errno; 259 if (((size_t)ret < size) && (ferror(file))) 260 ret = -1; 261 else 262 ret = size; 263 fclose(file); 264 errno = err; 265 return ret; 266 } 267 268 /** 269 * Write to sysfs entry. 270 * 271 * @param[in] priv 272 * Pointer to private structure. 273 * @param[in] entry 274 * Entry name relative to sysfs path. 275 * @param[in] buf 276 * Data buffer. 277 * @param size 278 * Buffer size. 279 * 280 * @return 281 * 0 on success, -1 on failure and errno is set. 282 */ 283 static int 284 priv_sysfs_write(const struct priv *priv, const char *entry, 285 char *buf, size_t size) 286 { 287 char ifname[IF_NAMESIZE]; 288 FILE *file; 289 int ret; 290 int err; 291 292 if (priv_get_ifname(priv, &ifname)) 293 return -1; 294 295 MKSTR(path, "%s/device/net/%s/%s", priv->ibdev_path, ifname, entry); 296 297 file = fopen(path, "wb"); 298 if (file == NULL) 299 return -1; 300 ret = fwrite(buf, 1, size, file); 301 err = errno; 302 if (((size_t)ret < size) || (ferror(file))) 303 ret = -1; 304 else 305 ret = size; 306 fclose(file); 307 errno = err; 308 return ret; 309 } 310 311 /** 312 * Get unsigned long sysfs property. 313 * 314 * @param priv 315 * Pointer to private structure. 316 * @param[in] name 317 * Entry name relative to sysfs path. 318 * @param[out] value 319 * Value output buffer. 320 * 321 * @return 322 * 0 on success, -1 on failure and errno is set. 323 */ 324 static int 325 priv_get_sysfs_ulong(struct priv *priv, const char *name, unsigned long *value) 326 { 327 int ret; 328 unsigned long value_ret; 329 char value_str[32]; 330 331 ret = priv_sysfs_read(priv, name, value_str, (sizeof(value_str) - 1)); 332 if (ret == -1) { 333 DEBUG("cannot read %s value from sysfs: %s", 334 name, strerror(errno)); 335 return -1; 336 } 337 value_str[ret] = '\0'; 338 errno = 0; 339 value_ret = strtoul(value_str, NULL, 0); 340 if (errno) { 341 DEBUG("invalid %s value `%s': %s", name, value_str, 342 strerror(errno)); 343 return -1; 344 } 345 *value = value_ret; 346 return 0; 347 } 348 349 /** 350 * Set unsigned long sysfs property. 351 * 352 * @param priv 353 * Pointer to private structure. 354 * @param[in] name 355 * Entry name relative to sysfs path. 356 * @param value 357 * Value to set. 358 * 359 * @return 360 * 0 on success, -1 on failure and errno is set. 361 */ 362 static int 363 priv_set_sysfs_ulong(struct priv *priv, const char *name, unsigned long value) 364 { 365 int ret; 366 MKSTR(value_str, "%lu", value); 367 368 ret = priv_sysfs_write(priv, name, value_str, (sizeof(value_str) - 1)); 369 if (ret == -1) { 370 DEBUG("cannot write %s `%s' (%lu) to sysfs: %s", 371 name, value_str, value, strerror(errno)); 372 return -1; 373 } 374 return 0; 375 } 376 377 /** 378 * Perform ifreq ioctl() on associated Ethernet device. 379 * 380 * @param[in] priv 381 * Pointer to private structure. 382 * @param req 383 * Request number to pass to ioctl(). 384 * @param[out] ifr 385 * Interface request structure output buffer. 386 * 387 * @return 388 * 0 on success, -1 on failure and errno is set. 389 */ 390 int 391 priv_ifreq(const struct priv *priv, int req, struct ifreq *ifr) 392 { 393 int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP); 394 int ret = -1; 395 396 if (sock == -1) 397 return ret; 398 if (priv_get_ifname(priv, &ifr->ifr_name) == 0) 399 ret = ioctl(sock, req, ifr); 400 close(sock); 401 return ret; 402 } 403 404 /** 405 * Return the number of active VFs for the current device. 406 * 407 * @param[in] priv 408 * Pointer to private structure. 409 * @param[out] num_vfs 410 * Number of active VFs. 411 * 412 * @return 413 * 0 on success, -1 on failure and errno is set. 414 */ 415 int 416 priv_get_num_vfs(struct priv *priv, uint16_t *num_vfs) 417 { 418 /* The sysfs entry name depends on the operating system. */ 419 const char **name = (const char *[]){ 420 "device/sriov_numvfs", 421 "device/mlx5_num_vfs", 422 NULL, 423 }; 424 int ret; 425 426 do { 427 unsigned long ulong_num_vfs; 428 429 ret = priv_get_sysfs_ulong(priv, *name, &ulong_num_vfs); 430 if (!ret) 431 *num_vfs = ulong_num_vfs; 432 } while (*(++name) && ret); 433 return ret; 434 } 435 436 /** 437 * Get device MTU. 438 * 439 * @param priv 440 * Pointer to private structure. 441 * @param[out] mtu 442 * MTU value output buffer. 443 * 444 * @return 445 * 0 on success, -1 on failure and errno is set. 446 */ 447 int 448 priv_get_mtu(struct priv *priv, uint16_t *mtu) 449 { 450 unsigned long ulong_mtu; 451 452 if (priv_get_sysfs_ulong(priv, "mtu", &ulong_mtu) == -1) 453 return -1; 454 *mtu = ulong_mtu; 455 return 0; 456 } 457 458 /** 459 * Read device counter from sysfs. 460 * 461 * @param priv 462 * Pointer to private structure. 463 * @param name 464 * Counter name. 465 * @param[out] cntr 466 * Counter output buffer. 467 * 468 * @return 469 * 0 on success, -1 on failure and errno is set. 470 */ 471 int 472 priv_get_cntr_sysfs(struct priv *priv, const char *name, uint64_t *cntr) 473 { 474 unsigned long ulong_ctr; 475 476 if (priv_get_sysfs_ulong(priv, name, &ulong_ctr) == -1) 477 return -1; 478 *cntr = ulong_ctr; 479 return 0; 480 } 481 482 /** 483 * Set device MTU. 484 * 485 * @param priv 486 * Pointer to private structure. 487 * @param mtu 488 * MTU value to set. 489 * 490 * @return 491 * 0 on success, -1 on failure and errno is set. 492 */ 493 static int 494 priv_set_mtu(struct priv *priv, uint16_t mtu) 495 { 496 uint16_t new_mtu; 497 498 if (priv_set_sysfs_ulong(priv, "mtu", mtu) || 499 priv_get_mtu(priv, &new_mtu)) 500 return -1; 501 if (new_mtu == mtu) 502 return 0; 503 errno = EINVAL; 504 return -1; 505 } 506 507 /** 508 * Set device flags. 509 * 510 * @param priv 511 * Pointer to private structure. 512 * @param keep 513 * Bitmask for flags that must remain untouched. 514 * @param flags 515 * Bitmask for flags to modify. 516 * 517 * @return 518 * 0 on success, -1 on failure and errno is set. 519 */ 520 int 521 priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags) 522 { 523 unsigned long tmp; 524 525 if (priv_get_sysfs_ulong(priv, "flags", &tmp) == -1) 526 return -1; 527 tmp &= keep; 528 tmp |= (flags & (~keep)); 529 return priv_set_sysfs_ulong(priv, "flags", tmp); 530 } 531 532 /** 533 * Ethernet device configuration. 534 * 535 * Prepare the driver for a given number of TX and RX queues. 536 * 537 * @param dev 538 * Pointer to Ethernet device structure. 539 * 540 * @return 541 * 0 on success, errno value on failure. 542 */ 543 static int 544 dev_configure(struct rte_eth_dev *dev) 545 { 546 struct priv *priv = dev->data->dev_private; 547 unsigned int rxqs_n = dev->data->nb_rx_queues; 548 unsigned int txqs_n = dev->data->nb_tx_queues; 549 unsigned int i; 550 unsigned int j; 551 unsigned int reta_idx_n; 552 const uint8_t use_app_rss_key = 553 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key; 554 uint64_t supp_tx_offloads = mlx5_priv_get_tx_port_offloads(priv); 555 uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads; 556 557 if ((tx_offloads & supp_tx_offloads) != tx_offloads) { 558 ERROR("Some Tx offloads are not supported " 559 "requested 0x%" PRIx64 " supported 0x%" PRIx64, 560 tx_offloads, supp_tx_offloads); 561 return ENOTSUP; 562 } 563 if (use_app_rss_key && 564 (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len != 565 rss_hash_default_key_len)) { 566 /* MLX5 RSS only support 40bytes key. */ 567 return EINVAL; 568 } 569 priv->rss_conf.rss_key = 570 rte_realloc(priv->rss_conf.rss_key, 571 rss_hash_default_key_len, 0); 572 if (!priv->rss_conf.rss_key) { 573 ERROR("cannot allocate RSS hash key memory (%u)", rxqs_n); 574 return ENOMEM; 575 } 576 memcpy(priv->rss_conf.rss_key, 577 use_app_rss_key ? 578 dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key : 579 rss_hash_default_key, 580 rss_hash_default_key_len); 581 priv->rss_conf.rss_key_len = rss_hash_default_key_len; 582 priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf; 583 priv->rxqs = (void *)dev->data->rx_queues; 584 priv->txqs = (void *)dev->data->tx_queues; 585 if (txqs_n != priv->txqs_n) { 586 INFO("%p: TX queues number update: %u -> %u", 587 (void *)dev, priv->txqs_n, txqs_n); 588 priv->txqs_n = txqs_n; 589 } 590 if (rxqs_n > priv->config.ind_table_max_size) { 591 ERROR("cannot handle this many RX queues (%u)", rxqs_n); 592 return EINVAL; 593 } 594 if (rxqs_n == priv->rxqs_n) 595 return 0; 596 INFO("%p: RX queues number update: %u -> %u", 597 (void *)dev, priv->rxqs_n, rxqs_n); 598 priv->rxqs_n = rxqs_n; 599 /* If the requested number of RX queues is not a power of two, use the 600 * maximum indirection table size for better balancing. 601 * The result is always rounded to the next power of two. */ 602 reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ? 603 priv->config.ind_table_max_size : 604 rxqs_n)); 605 if (priv_rss_reta_index_resize(priv, reta_idx_n)) 606 return ENOMEM; 607 /* When the number of RX queues is not a power of two, the remaining 608 * table entries are padded with reused WQs and hashes are not spread 609 * uniformly. */ 610 for (i = 0, j = 0; (i != reta_idx_n); ++i) { 611 (*priv->reta_idx)[i] = j; 612 if (++j == rxqs_n) 613 j = 0; 614 } 615 return 0; 616 } 617 618 /** 619 * DPDK callback for Ethernet device configuration. 620 * 621 * @param dev 622 * Pointer to Ethernet device structure. 623 * 624 * @return 625 * 0 on success, negative errno value on failure. 626 */ 627 int 628 mlx5_dev_configure(struct rte_eth_dev *dev) 629 { 630 struct priv *priv = dev->data->dev_private; 631 int ret; 632 633 priv_lock(priv); 634 ret = dev_configure(dev); 635 assert(ret >= 0); 636 priv_unlock(priv); 637 return -ret; 638 } 639 640 /** 641 * DPDK callback to get information about the device. 642 * 643 * @param dev 644 * Pointer to Ethernet device structure. 645 * @param[out] info 646 * Info structure output buffer. 647 */ 648 void 649 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) 650 { 651 struct priv *priv = dev->data->dev_private; 652 struct mlx5_dev_config *config = &priv->config; 653 unsigned int max; 654 char ifname[IF_NAMESIZE]; 655 656 info->pci_dev = RTE_ETH_DEV_TO_PCI(dev); 657 658 priv_lock(priv); 659 /* FIXME: we should ask the device for these values. */ 660 info->min_rx_bufsize = 32; 661 info->max_rx_pktlen = 65536; 662 /* 663 * Since we need one CQ per QP, the limit is the minimum number 664 * between the two values. 665 */ 666 max = RTE_MIN(priv->device_attr.orig_attr.max_cq, 667 priv->device_attr.orig_attr.max_qp); 668 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */ 669 if (max >= 65535) 670 max = 65535; 671 info->max_rx_queues = max; 672 info->max_tx_queues = max; 673 info->max_mac_addrs = RTE_DIM(priv->mac); 674 info->rx_offload_capa = 675 (config->hw_csum ? 676 (DEV_RX_OFFLOAD_IPV4_CKSUM | 677 DEV_RX_OFFLOAD_UDP_CKSUM | 678 DEV_RX_OFFLOAD_TCP_CKSUM) : 679 0) | 680 (priv->config.hw_vlan_strip ? DEV_RX_OFFLOAD_VLAN_STRIP : 0) | 681 DEV_RX_OFFLOAD_TIMESTAMP; 682 683 info->tx_offload_capa = mlx5_priv_get_tx_port_offloads(priv); 684 if (priv_get_ifname(priv, &ifname) == 0) 685 info->if_index = if_nametoindex(ifname); 686 info->reta_size = priv->reta_idx_n ? 687 priv->reta_idx_n : config->ind_table_max_size; 688 info->hash_key_size = priv->rss_conf.rss_key_len; 689 info->speed_capa = priv->link_speed_capa; 690 priv_unlock(priv); 691 } 692 693 const uint32_t * 694 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev) 695 { 696 static const uint32_t ptypes[] = { 697 /* refers to rxq_cq_to_pkt_type() */ 698 RTE_PTYPE_L2_ETHER, 699 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN, 700 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN, 701 RTE_PTYPE_L4_NONFRAG, 702 RTE_PTYPE_L4_FRAG, 703 RTE_PTYPE_L4_TCP, 704 RTE_PTYPE_L4_UDP, 705 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN, 706 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN, 707 RTE_PTYPE_INNER_L4_NONFRAG, 708 RTE_PTYPE_INNER_L4_FRAG, 709 RTE_PTYPE_INNER_L4_TCP, 710 RTE_PTYPE_INNER_L4_UDP, 711 RTE_PTYPE_UNKNOWN 712 }; 713 714 if (dev->rx_pkt_burst == mlx5_rx_burst || 715 dev->rx_pkt_burst == mlx5_rx_burst_vec) 716 return ptypes; 717 return NULL; 718 } 719 720 /** 721 * DPDK callback to retrieve physical link information. 722 * 723 * @param dev 724 * Pointer to Ethernet device structure. 725 * @param wait_to_complete 726 * Wait for request completion (ignored). 727 */ 728 static int 729 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, int wait_to_complete) 730 { 731 struct priv *priv = dev->data->dev_private; 732 struct ethtool_cmd edata = { 733 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */ 734 }; 735 struct ifreq ifr; 736 struct rte_eth_link dev_link; 737 int link_speed = 0; 738 739 /* priv_lock() is not taken to allow concurrent calls. */ 740 741 (void)wait_to_complete; 742 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) { 743 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno)); 744 return -1; 745 } 746 memset(&dev_link, 0, sizeof(dev_link)); 747 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) && 748 (ifr.ifr_flags & IFF_RUNNING)); 749 ifr.ifr_data = (void *)&edata; 750 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 751 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s", 752 strerror(errno)); 753 return -1; 754 } 755 link_speed = ethtool_cmd_speed(&edata); 756 if (link_speed == -1) 757 dev_link.link_speed = 0; 758 else 759 dev_link.link_speed = link_speed; 760 priv->link_speed_capa = 0; 761 if (edata.supported & SUPPORTED_Autoneg) 762 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 763 if (edata.supported & (SUPPORTED_1000baseT_Full | 764 SUPPORTED_1000baseKX_Full)) 765 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 766 if (edata.supported & SUPPORTED_10000baseKR_Full) 767 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 768 if (edata.supported & (SUPPORTED_40000baseKR4_Full | 769 SUPPORTED_40000baseCR4_Full | 770 SUPPORTED_40000baseSR4_Full | 771 SUPPORTED_40000baseLR4_Full)) 772 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 773 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ? 774 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 775 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 776 ETH_LINK_SPEED_FIXED); 777 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) { 778 /* Link status changed. */ 779 dev->data->dev_link = dev_link; 780 return 0; 781 } 782 /* Link status is still the same. */ 783 return -1; 784 } 785 786 /** 787 * Retrieve physical link information (unlocked version using new ioctl). 788 * 789 * @param dev 790 * Pointer to Ethernet device structure. 791 * @param wait_to_complete 792 * Wait for request completion (ignored). 793 */ 794 static int 795 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete) 796 { 797 struct priv *priv = dev->data->dev_private; 798 struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS }; 799 struct ifreq ifr; 800 struct rte_eth_link dev_link; 801 uint64_t sc; 802 803 (void)wait_to_complete; 804 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) { 805 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno)); 806 return -1; 807 } 808 memset(&dev_link, 0, sizeof(dev_link)); 809 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) && 810 (ifr.ifr_flags & IFF_RUNNING)); 811 ifr.ifr_data = (void *)&gcmd; 812 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 813 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s", 814 strerror(errno)); 815 return -1; 816 } 817 gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords; 818 819 alignas(struct ethtool_link_settings) 820 uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) + 821 sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3]; 822 struct ethtool_link_settings *ecmd = (void *)data; 823 824 *ecmd = gcmd; 825 ifr.ifr_data = (void *)ecmd; 826 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 827 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s", 828 strerror(errno)); 829 return -1; 830 } 831 dev_link.link_speed = ecmd->speed; 832 sc = ecmd->link_mode_masks[0] | 833 ((uint64_t)ecmd->link_mode_masks[1] << 32); 834 priv->link_speed_capa = 0; 835 if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT)) 836 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 837 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) | 838 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT))) 839 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 840 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) | 841 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) | 842 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT))) 843 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 844 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) | 845 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT))) 846 priv->link_speed_capa |= ETH_LINK_SPEED_20G; 847 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) | 848 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) | 849 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) | 850 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT))) 851 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 852 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) | 853 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) | 854 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) | 855 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT))) 856 priv->link_speed_capa |= ETH_LINK_SPEED_56G; 857 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) | 858 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) | 859 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT))) 860 priv->link_speed_capa |= ETH_LINK_SPEED_25G; 861 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) | 862 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT))) 863 priv->link_speed_capa |= ETH_LINK_SPEED_50G; 864 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) | 865 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) | 866 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) | 867 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT))) 868 priv->link_speed_capa |= ETH_LINK_SPEED_100G; 869 dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ? 870 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 871 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 872 ETH_LINK_SPEED_FIXED); 873 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) { 874 /* Link status changed. */ 875 dev->data->dev_link = dev_link; 876 return 0; 877 } 878 /* Link status is still the same. */ 879 return -1; 880 } 881 882 /** 883 * DPDK callback to retrieve physical link information. 884 * 885 * @param dev 886 * Pointer to Ethernet device structure. 887 * @param wait_to_complete 888 * Wait for request completion (ignored). 889 */ 890 int 891 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete) 892 { 893 struct utsname utsname; 894 int ver[3]; 895 896 if (uname(&utsname) == -1 || 897 sscanf(utsname.release, "%d.%d.%d", 898 &ver[0], &ver[1], &ver[2]) != 3 || 899 KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0)) 900 return mlx5_link_update_unlocked_gset(dev, wait_to_complete); 901 return mlx5_link_update_unlocked_gs(dev, wait_to_complete); 902 } 903 904 /** 905 * DPDK callback to change the MTU. 906 * 907 * @param dev 908 * Pointer to Ethernet device structure. 909 * @param in_mtu 910 * New MTU. 911 * 912 * @return 913 * 0 on success, negative errno value on failure. 914 */ 915 int 916 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu) 917 { 918 struct priv *priv = dev->data->dev_private; 919 uint16_t kern_mtu; 920 int ret = 0; 921 922 priv_lock(priv); 923 ret = priv_get_mtu(priv, &kern_mtu); 924 if (ret) 925 goto out; 926 /* Set kernel interface MTU first. */ 927 ret = priv_set_mtu(priv, mtu); 928 if (ret) 929 goto out; 930 ret = priv_get_mtu(priv, &kern_mtu); 931 if (ret) 932 goto out; 933 if (kern_mtu == mtu) { 934 priv->mtu = mtu; 935 DEBUG("adapter port %u MTU set to %u", priv->port, mtu); 936 } 937 priv_unlock(priv); 938 return 0; 939 out: 940 ret = errno; 941 WARN("cannot set port %u MTU to %u: %s", priv->port, mtu, 942 strerror(ret)); 943 priv_unlock(priv); 944 assert(ret >= 0); 945 return -ret; 946 } 947 948 /** 949 * DPDK callback to get flow control status. 950 * 951 * @param dev 952 * Pointer to Ethernet device structure. 953 * @param[out] fc_conf 954 * Flow control output buffer. 955 * 956 * @return 957 * 0 on success, negative errno value on failure. 958 */ 959 int 960 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 961 { 962 struct priv *priv = dev->data->dev_private; 963 struct ifreq ifr; 964 struct ethtool_pauseparam ethpause = { 965 .cmd = ETHTOOL_GPAUSEPARAM 966 }; 967 int ret; 968 969 ifr.ifr_data = (void *)ðpause; 970 priv_lock(priv); 971 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 972 ret = errno; 973 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)" 974 " failed: %s", 975 strerror(ret)); 976 goto out; 977 } 978 979 fc_conf->autoneg = ethpause.autoneg; 980 if (ethpause.rx_pause && ethpause.tx_pause) 981 fc_conf->mode = RTE_FC_FULL; 982 else if (ethpause.rx_pause) 983 fc_conf->mode = RTE_FC_RX_PAUSE; 984 else if (ethpause.tx_pause) 985 fc_conf->mode = RTE_FC_TX_PAUSE; 986 else 987 fc_conf->mode = RTE_FC_NONE; 988 ret = 0; 989 990 out: 991 priv_unlock(priv); 992 assert(ret >= 0); 993 return -ret; 994 } 995 996 /** 997 * DPDK callback to modify flow control parameters. 998 * 999 * @param dev 1000 * Pointer to Ethernet device structure. 1001 * @param[in] fc_conf 1002 * Flow control parameters. 1003 * 1004 * @return 1005 * 0 on success, negative errno value on failure. 1006 */ 1007 int 1008 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 1009 { 1010 struct priv *priv = dev->data->dev_private; 1011 struct ifreq ifr; 1012 struct ethtool_pauseparam ethpause = { 1013 .cmd = ETHTOOL_SPAUSEPARAM 1014 }; 1015 int ret; 1016 1017 ifr.ifr_data = (void *)ðpause; 1018 ethpause.autoneg = fc_conf->autoneg; 1019 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 1020 (fc_conf->mode & RTE_FC_RX_PAUSE)) 1021 ethpause.rx_pause = 1; 1022 else 1023 ethpause.rx_pause = 0; 1024 1025 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 1026 (fc_conf->mode & RTE_FC_TX_PAUSE)) 1027 ethpause.tx_pause = 1; 1028 else 1029 ethpause.tx_pause = 0; 1030 1031 priv_lock(priv); 1032 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 1033 ret = errno; 1034 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)" 1035 " failed: %s", 1036 strerror(ret)); 1037 goto out; 1038 } 1039 ret = 0; 1040 1041 out: 1042 priv_unlock(priv); 1043 assert(ret >= 0); 1044 return -ret; 1045 } 1046 1047 /** 1048 * Get PCI information from struct ibv_device. 1049 * 1050 * @param device 1051 * Pointer to Ethernet device structure. 1052 * @param[out] pci_addr 1053 * PCI bus address output buffer. 1054 * 1055 * @return 1056 * 0 on success, -1 on failure and errno is set. 1057 */ 1058 int 1059 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device, 1060 struct rte_pci_addr *pci_addr) 1061 { 1062 FILE *file; 1063 char line[32]; 1064 MKSTR(path, "%s/device/uevent", device->ibdev_path); 1065 1066 file = fopen(path, "rb"); 1067 if (file == NULL) 1068 return -1; 1069 while (fgets(line, sizeof(line), file) == line) { 1070 size_t len = strlen(line); 1071 int ret; 1072 1073 /* Truncate long lines. */ 1074 if (len == (sizeof(line) - 1)) 1075 while (line[(len - 1)] != '\n') { 1076 ret = fgetc(file); 1077 if (ret == EOF) 1078 break; 1079 line[(len - 1)] = ret; 1080 } 1081 /* Extract information. */ 1082 if (sscanf(line, 1083 "PCI_SLOT_NAME=" 1084 "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n", 1085 &pci_addr->domain, 1086 &pci_addr->bus, 1087 &pci_addr->devid, 1088 &pci_addr->function) == 4) { 1089 ret = 0; 1090 break; 1091 } 1092 } 1093 fclose(file); 1094 return 0; 1095 } 1096 1097 /** 1098 * Update the link status. 1099 * 1100 * @param priv 1101 * Pointer to private structure. 1102 * 1103 * @return 1104 * Zero if the callback process can be called immediately. 1105 */ 1106 static int 1107 priv_link_status_update(struct priv *priv) 1108 { 1109 struct rte_eth_link *link = &priv->dev->data->dev_link; 1110 1111 mlx5_link_update(priv->dev, 0); 1112 if (((link->link_speed == 0) && link->link_status) || 1113 ((link->link_speed != 0) && !link->link_status)) { 1114 /* 1115 * Inconsistent status. Event likely occurred before the 1116 * kernel netdevice exposes the new status. 1117 */ 1118 if (!priv->pending_alarm) { 1119 priv->pending_alarm = 1; 1120 rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US, 1121 mlx5_dev_link_status_handler, 1122 priv->dev); 1123 } 1124 return 1; 1125 } else if (unlikely(priv->pending_alarm)) { 1126 /* Link interrupt occurred while alarm is already scheduled. */ 1127 priv->pending_alarm = 0; 1128 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, priv->dev); 1129 } 1130 return 0; 1131 } 1132 1133 /** 1134 * Device status handler. 1135 * 1136 * @param priv 1137 * Pointer to private structure. 1138 * @param events 1139 * Pointer to event flags holder. 1140 * 1141 * @return 1142 * Events bitmap of callback process which can be called immediately. 1143 */ 1144 static uint32_t 1145 priv_dev_status_handler(struct priv *priv) 1146 { 1147 struct ibv_async_event event; 1148 uint32_t ret = 0; 1149 1150 /* Read all message and acknowledge them. */ 1151 for (;;) { 1152 if (ibv_get_async_event(priv->ctx, &event)) 1153 break; 1154 if ((event.event_type == IBV_EVENT_PORT_ACTIVE || 1155 event.event_type == IBV_EVENT_PORT_ERR) && 1156 (priv->dev->data->dev_conf.intr_conf.lsc == 1)) 1157 ret |= (1 << RTE_ETH_EVENT_INTR_LSC); 1158 else if (event.event_type == IBV_EVENT_DEVICE_FATAL && 1159 priv->dev->data->dev_conf.intr_conf.rmv == 1) 1160 ret |= (1 << RTE_ETH_EVENT_INTR_RMV); 1161 else 1162 DEBUG("event type %d on port %d not handled", 1163 event.event_type, event.element.port_num); 1164 ibv_ack_async_event(&event); 1165 } 1166 if (ret & (1 << RTE_ETH_EVENT_INTR_LSC)) 1167 if (priv_link_status_update(priv)) 1168 ret &= ~(1 << RTE_ETH_EVENT_INTR_LSC); 1169 return ret; 1170 } 1171 1172 /** 1173 * Handle delayed link status event. 1174 * 1175 * @param arg 1176 * Registered argument. 1177 */ 1178 void 1179 mlx5_dev_link_status_handler(void *arg) 1180 { 1181 struct rte_eth_dev *dev = arg; 1182 struct priv *priv = dev->data->dev_private; 1183 int ret; 1184 1185 priv_lock(priv); 1186 assert(priv->pending_alarm == 1); 1187 priv->pending_alarm = 0; 1188 ret = priv_link_status_update(priv); 1189 priv_unlock(priv); 1190 if (!ret) 1191 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL, 1192 NULL); 1193 } 1194 1195 /** 1196 * Handle interrupts from the NIC. 1197 * 1198 * @param[in] intr_handle 1199 * Interrupt handler. 1200 * @param cb_arg 1201 * Callback argument. 1202 */ 1203 void 1204 mlx5_dev_interrupt_handler(void *cb_arg) 1205 { 1206 struct rte_eth_dev *dev = cb_arg; 1207 struct priv *priv = dev->data->dev_private; 1208 uint32_t events; 1209 1210 priv_lock(priv); 1211 events = priv_dev_status_handler(priv); 1212 priv_unlock(priv); 1213 if (events & (1 << RTE_ETH_EVENT_INTR_LSC)) 1214 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL, 1215 NULL); 1216 if (events & (1 << RTE_ETH_EVENT_INTR_RMV)) 1217 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL, 1218 NULL); 1219 } 1220 1221 /** 1222 * Handle interrupts from the socket. 1223 * 1224 * @param cb_arg 1225 * Callback argument. 1226 */ 1227 static void 1228 mlx5_dev_handler_socket(void *cb_arg) 1229 { 1230 struct rte_eth_dev *dev = cb_arg; 1231 struct priv *priv = dev->data->dev_private; 1232 1233 priv_lock(priv); 1234 priv_socket_handle(priv); 1235 priv_unlock(priv); 1236 } 1237 1238 /** 1239 * Uninstall interrupt handler. 1240 * 1241 * @param priv 1242 * Pointer to private structure. 1243 * @param dev 1244 * Pointer to the rte_eth_dev structure. 1245 */ 1246 void 1247 priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev) 1248 { 1249 if (dev->data->dev_conf.intr_conf.lsc || 1250 dev->data->dev_conf.intr_conf.rmv) 1251 rte_intr_callback_unregister(&priv->intr_handle, 1252 mlx5_dev_interrupt_handler, dev); 1253 if (priv->primary_socket) 1254 rte_intr_callback_unregister(&priv->intr_handle_socket, 1255 mlx5_dev_handler_socket, dev); 1256 if (priv->pending_alarm) 1257 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev); 1258 priv->pending_alarm = 0; 1259 priv->intr_handle.fd = 0; 1260 priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; 1261 priv->intr_handle_socket.fd = 0; 1262 priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN; 1263 } 1264 1265 /** 1266 * Install interrupt handler. 1267 * 1268 * @param priv 1269 * Pointer to private structure. 1270 * @param dev 1271 * Pointer to the rte_eth_dev structure. 1272 */ 1273 void 1274 priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev) 1275 { 1276 int rc, flags; 1277 1278 assert(priv->ctx->async_fd > 0); 1279 flags = fcntl(priv->ctx->async_fd, F_GETFL); 1280 rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK); 1281 if (rc < 0) { 1282 INFO("failed to change file descriptor async event queue"); 1283 dev->data->dev_conf.intr_conf.lsc = 0; 1284 dev->data->dev_conf.intr_conf.rmv = 0; 1285 } 1286 if (dev->data->dev_conf.intr_conf.lsc || 1287 dev->data->dev_conf.intr_conf.rmv) { 1288 priv->intr_handle.fd = priv->ctx->async_fd; 1289 priv->intr_handle.type = RTE_INTR_HANDLE_EXT; 1290 rte_intr_callback_register(&priv->intr_handle, 1291 mlx5_dev_interrupt_handler, dev); 1292 } 1293 1294 rc = priv_socket_init(priv); 1295 if (!rc && priv->primary_socket) { 1296 priv->intr_handle_socket.fd = priv->primary_socket; 1297 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT; 1298 rte_intr_callback_register(&priv->intr_handle_socket, 1299 mlx5_dev_handler_socket, dev); 1300 } 1301 } 1302 1303 /** 1304 * Change the link state (UP / DOWN). 1305 * 1306 * @param priv 1307 * Pointer to private data structure. 1308 * @param dev 1309 * Pointer to rte_eth_dev structure. 1310 * @param up 1311 * Nonzero for link up, otherwise link down. 1312 * 1313 * @return 1314 * 0 on success, errno value on failure. 1315 */ 1316 static int 1317 priv_dev_set_link(struct priv *priv, struct rte_eth_dev *dev, int up) 1318 { 1319 int err; 1320 1321 if (up) { 1322 err = priv_set_flags(priv, ~IFF_UP, IFF_UP); 1323 if (err) 1324 return err; 1325 dev->tx_pkt_burst = priv_select_tx_function(priv, dev); 1326 dev->rx_pkt_burst = priv_select_rx_function(priv, dev); 1327 } else { 1328 err = priv_set_flags(priv, ~IFF_UP, ~IFF_UP); 1329 if (err) 1330 return err; 1331 dev->rx_pkt_burst = removed_rx_burst; 1332 dev->tx_pkt_burst = removed_tx_burst; 1333 } 1334 return 0; 1335 } 1336 1337 /** 1338 * DPDK callback to bring the link DOWN. 1339 * 1340 * @param dev 1341 * Pointer to Ethernet device structure. 1342 * 1343 * @return 1344 * 0 on success, errno value on failure. 1345 */ 1346 int 1347 mlx5_set_link_down(struct rte_eth_dev *dev) 1348 { 1349 struct priv *priv = dev->data->dev_private; 1350 int err; 1351 1352 priv_lock(priv); 1353 err = priv_dev_set_link(priv, dev, 0); 1354 priv_unlock(priv); 1355 return err; 1356 } 1357 1358 /** 1359 * DPDK callback to bring the link UP. 1360 * 1361 * @param dev 1362 * Pointer to Ethernet device structure. 1363 * 1364 * @return 1365 * 0 on success, errno value on failure. 1366 */ 1367 int 1368 mlx5_set_link_up(struct rte_eth_dev *dev) 1369 { 1370 struct priv *priv = dev->data->dev_private; 1371 int err; 1372 1373 priv_lock(priv); 1374 err = priv_dev_set_link(priv, dev, 1); 1375 priv_unlock(priv); 1376 return err; 1377 } 1378 1379 /** 1380 * Configure the TX function to use. 1381 * 1382 * @param priv 1383 * Pointer to private data structure. 1384 * @param dev 1385 * Pointer to rte_eth_dev structure. 1386 * 1387 * @return 1388 * Pointer to selected Tx burst function. 1389 */ 1390 eth_tx_burst_t 1391 priv_select_tx_function(struct priv *priv, struct rte_eth_dev *dev) 1392 { 1393 eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst; 1394 struct mlx5_dev_config *config = &priv->config; 1395 uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads; 1396 int tso = !!(tx_offloads & (DEV_TX_OFFLOAD_TCP_TSO | 1397 DEV_TX_OFFLOAD_VXLAN_TNL_TSO | 1398 DEV_TX_OFFLOAD_GRE_TNL_TSO)); 1399 int vlan_insert = !!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT); 1400 1401 assert(priv != NULL); 1402 /* Select appropriate TX function. */ 1403 if (vlan_insert || tso) 1404 return tx_pkt_burst; 1405 if (config->mps == MLX5_MPW_ENHANCED) { 1406 if (priv_check_vec_tx_support(priv, dev) > 0) { 1407 if (priv_check_raw_vec_tx_support(priv, dev) > 0) 1408 tx_pkt_burst = mlx5_tx_burst_raw_vec; 1409 else 1410 tx_pkt_burst = mlx5_tx_burst_vec; 1411 DEBUG("selected Enhanced MPW TX vectorized function"); 1412 } else { 1413 tx_pkt_burst = mlx5_tx_burst_empw; 1414 DEBUG("selected Enhanced MPW TX function"); 1415 } 1416 } else if (config->mps && (config->txq_inline > 0)) { 1417 tx_pkt_burst = mlx5_tx_burst_mpw_inline; 1418 DEBUG("selected MPW inline TX function"); 1419 } else if (config->mps) { 1420 tx_pkt_burst = mlx5_tx_burst_mpw; 1421 DEBUG("selected MPW TX function"); 1422 } 1423 return tx_pkt_burst; 1424 } 1425 1426 /** 1427 * Configure the RX function to use. 1428 * 1429 * @param priv 1430 * Pointer to private data structure. 1431 * @param dev 1432 * Pointer to rte_eth_dev structure. 1433 * 1434 * @return 1435 * Pointer to selected Rx burst function. 1436 */ 1437 eth_rx_burst_t 1438 priv_select_rx_function(struct priv *priv, __rte_unused struct rte_eth_dev *dev) 1439 { 1440 eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst; 1441 1442 assert(priv != NULL); 1443 if (priv_check_vec_rx_support(priv) > 0) { 1444 rx_pkt_burst = mlx5_rx_burst_vec; 1445 DEBUG("selected RX vectorized function"); 1446 } 1447 return rx_pkt_burst; 1448 } 1449