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_mbuf.h> 60 #include <rte_common.h> 61 #include <rte_interrupts.h> 62 #include <rte_alarm.h> 63 #include <rte_malloc.h> 64 65 #include "mlx5.h" 66 #include "mlx5_rxtx.h" 67 #include "mlx5_utils.h" 68 69 /* Add defines in case the running kernel is not the same as user headers. */ 70 #ifndef ETHTOOL_GLINKSETTINGS 71 struct ethtool_link_settings { 72 uint32_t cmd; 73 uint32_t speed; 74 uint8_t duplex; 75 uint8_t port; 76 uint8_t phy_address; 77 uint8_t autoneg; 78 uint8_t mdio_support; 79 uint8_t eth_to_mdix; 80 uint8_t eth_tp_mdix_ctrl; 81 int8_t link_mode_masks_nwords; 82 uint32_t reserved[8]; 83 uint32_t link_mode_masks[]; 84 }; 85 86 #define ETHTOOL_GLINKSETTINGS 0x0000004c 87 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5 88 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6 89 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17 90 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18 91 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19 92 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20 93 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21 94 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22 95 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23 96 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24 97 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25 98 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26 99 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27 100 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28 101 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29 102 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30 103 #endif 104 #ifndef HAVE_ETHTOOL_LINK_MODE_25G 105 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31 106 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32 107 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33 108 #endif 109 #ifndef HAVE_ETHTOOL_LINK_MODE_50G 110 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34 111 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35 112 #endif 113 #ifndef HAVE_ETHTOOL_LINK_MODE_100G 114 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36 115 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37 116 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38 117 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39 118 #endif 119 120 /** 121 * Return private structure associated with an Ethernet device. 122 * 123 * @param dev 124 * Pointer to Ethernet device structure. 125 * 126 * @return 127 * Pointer to private structure. 128 */ 129 struct priv * 130 mlx5_get_priv(struct rte_eth_dev *dev) 131 { 132 return dev->data->dev_private; 133 } 134 135 /** 136 * Check if running as a secondary process. 137 * 138 * @return 139 * Nonzero if running as a secondary process. 140 */ 141 inline int 142 mlx5_is_secondary(void) 143 { 144 return rte_eal_process_type() == RTE_PROC_SECONDARY; 145 } 146 147 /** 148 * Get interface name from private structure. 149 * 150 * @param[in] priv 151 * Pointer to private structure. 152 * @param[out] ifname 153 * Interface name output buffer. 154 * 155 * @return 156 * 0 on success, -1 on failure and errno is set. 157 */ 158 int 159 priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE]) 160 { 161 DIR *dir; 162 struct dirent *dent; 163 unsigned int dev_type = 0; 164 unsigned int dev_port_prev = ~0u; 165 char match[IF_NAMESIZE] = ""; 166 167 { 168 MKSTR(path, "%s/device/net", priv->ibdev_path); 169 170 dir = opendir(path); 171 if (dir == NULL) 172 return -1; 173 } 174 while ((dent = readdir(dir)) != NULL) { 175 char *name = dent->d_name; 176 FILE *file; 177 unsigned int dev_port; 178 int r; 179 180 if ((name[0] == '.') && 181 ((name[1] == '\0') || 182 ((name[1] == '.') && (name[2] == '\0')))) 183 continue; 184 185 MKSTR(path, "%s/device/net/%s/%s", 186 priv->ibdev_path, name, 187 (dev_type ? "dev_id" : "dev_port")); 188 189 file = fopen(path, "rb"); 190 if (file == NULL) { 191 if (errno != ENOENT) 192 continue; 193 /* 194 * Switch to dev_id when dev_port does not exist as 195 * is the case with Linux kernel versions < 3.15. 196 */ 197 try_dev_id: 198 match[0] = '\0'; 199 if (dev_type) 200 break; 201 dev_type = 1; 202 dev_port_prev = ~0u; 203 rewinddir(dir); 204 continue; 205 } 206 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port); 207 fclose(file); 208 if (r != 1) 209 continue; 210 /* 211 * Switch to dev_id when dev_port returns the same value for 212 * all ports. May happen when using a MOFED release older than 213 * 3.0 with a Linux kernel >= 3.15. 214 */ 215 if (dev_port == dev_port_prev) 216 goto try_dev_id; 217 dev_port_prev = dev_port; 218 if (dev_port == (priv->port - 1u)) 219 snprintf(match, sizeof(match), "%s", name); 220 } 221 closedir(dir); 222 if (match[0] == '\0') 223 return -1; 224 strncpy(*ifname, match, sizeof(*ifname)); 225 return 0; 226 } 227 228 /** 229 * Check if the counter is located on ib counters file. 230 * 231 * @param[in] cntr 232 * Counter name. 233 * 234 * @return 235 * 1 if counter is located on ib counters file , 0 otherwise. 236 */ 237 int 238 priv_is_ib_cntr(const char *cntr) 239 { 240 if (!strcmp(cntr, "out_of_buffer")) 241 return 1; 242 return 0; 243 } 244 245 /** 246 * Read from sysfs entry. 247 * 248 * @param[in] priv 249 * Pointer to private structure. 250 * @param[in] entry 251 * Entry name relative to sysfs path. 252 * @param[out] buf 253 * Data output buffer. 254 * @param size 255 * Buffer size. 256 * 257 * @return 258 * 0 on success, -1 on failure and errno is set. 259 */ 260 static int 261 priv_sysfs_read(const struct priv *priv, const char *entry, 262 char *buf, size_t size) 263 { 264 char ifname[IF_NAMESIZE]; 265 FILE *file; 266 int ret; 267 int err; 268 269 if (priv_get_ifname(priv, &ifname)) 270 return -1; 271 272 if (priv_is_ib_cntr(entry)) { 273 MKSTR(path, "%s/ports/1/hw_counters/%s", 274 priv->ibdev_path, entry); 275 file = fopen(path, "rb"); 276 } else { 277 MKSTR(path, "%s/device/net/%s/%s", 278 priv->ibdev_path, ifname, entry); 279 file = fopen(path, "rb"); 280 } 281 if (file == NULL) 282 return -1; 283 ret = fread(buf, 1, size, file); 284 err = errno; 285 if (((size_t)ret < size) && (ferror(file))) 286 ret = -1; 287 else 288 ret = size; 289 fclose(file); 290 errno = err; 291 return ret; 292 } 293 294 /** 295 * Write to sysfs entry. 296 * 297 * @param[in] priv 298 * Pointer to private structure. 299 * @param[in] entry 300 * Entry name relative to sysfs path. 301 * @param[in] buf 302 * Data buffer. 303 * @param size 304 * Buffer size. 305 * 306 * @return 307 * 0 on success, -1 on failure and errno is set. 308 */ 309 static int 310 priv_sysfs_write(const struct priv *priv, const char *entry, 311 char *buf, size_t size) 312 { 313 char ifname[IF_NAMESIZE]; 314 FILE *file; 315 int ret; 316 int err; 317 318 if (priv_get_ifname(priv, &ifname)) 319 return -1; 320 321 MKSTR(path, "%s/device/net/%s/%s", priv->ibdev_path, ifname, entry); 322 323 file = fopen(path, "wb"); 324 if (file == NULL) 325 return -1; 326 ret = fwrite(buf, 1, size, file); 327 err = errno; 328 if (((size_t)ret < size) || (ferror(file))) 329 ret = -1; 330 else 331 ret = size; 332 fclose(file); 333 errno = err; 334 return ret; 335 } 336 337 /** 338 * Get unsigned long sysfs property. 339 * 340 * @param priv 341 * Pointer to private structure. 342 * @param[in] name 343 * Entry name relative to sysfs path. 344 * @param[out] value 345 * Value output buffer. 346 * 347 * @return 348 * 0 on success, -1 on failure and errno is set. 349 */ 350 static int 351 priv_get_sysfs_ulong(struct priv *priv, const char *name, unsigned long *value) 352 { 353 int ret; 354 unsigned long value_ret; 355 char value_str[32]; 356 357 ret = priv_sysfs_read(priv, name, value_str, (sizeof(value_str) - 1)); 358 if (ret == -1) { 359 DEBUG("cannot read %s value from sysfs: %s", 360 name, strerror(errno)); 361 return -1; 362 } 363 value_str[ret] = '\0'; 364 errno = 0; 365 value_ret = strtoul(value_str, NULL, 0); 366 if (errno) { 367 DEBUG("invalid %s value `%s': %s", name, value_str, 368 strerror(errno)); 369 return -1; 370 } 371 *value = value_ret; 372 return 0; 373 } 374 375 /** 376 * Set unsigned long sysfs property. 377 * 378 * @param priv 379 * Pointer to private structure. 380 * @param[in] name 381 * Entry name relative to sysfs path. 382 * @param value 383 * Value to set. 384 * 385 * @return 386 * 0 on success, -1 on failure and errno is set. 387 */ 388 static int 389 priv_set_sysfs_ulong(struct priv *priv, const char *name, unsigned long value) 390 { 391 int ret; 392 MKSTR(value_str, "%lu", value); 393 394 ret = priv_sysfs_write(priv, name, value_str, (sizeof(value_str) - 1)); 395 if (ret == -1) { 396 DEBUG("cannot write %s `%s' (%lu) to sysfs: %s", 397 name, value_str, value, strerror(errno)); 398 return -1; 399 } 400 return 0; 401 } 402 403 /** 404 * Perform ifreq ioctl() on associated Ethernet device. 405 * 406 * @param[in] priv 407 * Pointer to private structure. 408 * @param req 409 * Request number to pass to ioctl(). 410 * @param[out] ifr 411 * Interface request structure output buffer. 412 * 413 * @return 414 * 0 on success, -1 on failure and errno is set. 415 */ 416 int 417 priv_ifreq(const struct priv *priv, int req, struct ifreq *ifr) 418 { 419 int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP); 420 int ret = -1; 421 422 if (sock == -1) 423 return ret; 424 if (priv_get_ifname(priv, &ifr->ifr_name) == 0) 425 ret = ioctl(sock, req, ifr); 426 close(sock); 427 return ret; 428 } 429 430 /** 431 * Return the number of active VFs for the current device. 432 * 433 * @param[in] priv 434 * Pointer to private structure. 435 * @param[out] num_vfs 436 * Number of active VFs. 437 * 438 * @return 439 * 0 on success, -1 on failure and errno is set. 440 */ 441 int 442 priv_get_num_vfs(struct priv *priv, uint16_t *num_vfs) 443 { 444 /* The sysfs entry name depends on the operating system. */ 445 const char **name = (const char *[]){ 446 "device/sriov_numvfs", 447 "device/mlx5_num_vfs", 448 NULL, 449 }; 450 int ret; 451 452 do { 453 unsigned long ulong_num_vfs; 454 455 ret = priv_get_sysfs_ulong(priv, *name, &ulong_num_vfs); 456 if (!ret) 457 *num_vfs = ulong_num_vfs; 458 } while (*(++name) && ret); 459 return ret; 460 } 461 462 /** 463 * Get device MTU. 464 * 465 * @param priv 466 * Pointer to private structure. 467 * @param[out] mtu 468 * MTU value output buffer. 469 * 470 * @return 471 * 0 on success, -1 on failure and errno is set. 472 */ 473 int 474 priv_get_mtu(struct priv *priv, uint16_t *mtu) 475 { 476 unsigned long ulong_mtu; 477 478 if (priv_get_sysfs_ulong(priv, "mtu", &ulong_mtu) == -1) 479 return -1; 480 *mtu = ulong_mtu; 481 return 0; 482 } 483 484 /** 485 * Read device counter from sysfs. 486 * 487 * @param priv 488 * Pointer to private structure. 489 * @param name 490 * Counter name. 491 * @param[out] cntr 492 * Counter output buffer. 493 * 494 * @return 495 * 0 on success, -1 on failure and errno is set. 496 */ 497 int 498 priv_get_cntr_sysfs(struct priv *priv, const char *name, uint64_t *cntr) 499 { 500 unsigned long ulong_ctr; 501 502 if (priv_get_sysfs_ulong(priv, name, &ulong_ctr) == -1) 503 return -1; 504 *cntr = ulong_ctr; 505 return 0; 506 } 507 508 /** 509 * Set device MTU. 510 * 511 * @param priv 512 * Pointer to private structure. 513 * @param mtu 514 * MTU value to set. 515 * 516 * @return 517 * 0 on success, -1 on failure and errno is set. 518 */ 519 static int 520 priv_set_mtu(struct priv *priv, uint16_t mtu) 521 { 522 uint16_t new_mtu; 523 524 if (priv_set_sysfs_ulong(priv, "mtu", mtu) || 525 priv_get_mtu(priv, &new_mtu)) 526 return -1; 527 if (new_mtu == mtu) 528 return 0; 529 errno = EINVAL; 530 return -1; 531 } 532 533 /** 534 * Set device flags. 535 * 536 * @param priv 537 * Pointer to private structure. 538 * @param keep 539 * Bitmask for flags that must remain untouched. 540 * @param flags 541 * Bitmask for flags to modify. 542 * 543 * @return 544 * 0 on success, -1 on failure and errno is set. 545 */ 546 int 547 priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags) 548 { 549 unsigned long tmp; 550 551 if (priv_get_sysfs_ulong(priv, "flags", &tmp) == -1) 552 return -1; 553 tmp &= keep; 554 tmp |= (flags & (~keep)); 555 return priv_set_sysfs_ulong(priv, "flags", tmp); 556 } 557 558 /** 559 * Ethernet device configuration. 560 * 561 * Prepare the driver for a given number of TX and RX queues. 562 * 563 * @param dev 564 * Pointer to Ethernet device structure. 565 * 566 * @return 567 * 0 on success, errno value on failure. 568 */ 569 static int 570 dev_configure(struct rte_eth_dev *dev) 571 { 572 struct priv *priv = dev->data->dev_private; 573 unsigned int rxqs_n = dev->data->nb_rx_queues; 574 unsigned int txqs_n = dev->data->nb_tx_queues; 575 unsigned int i; 576 unsigned int j; 577 unsigned int reta_idx_n; 578 const uint8_t use_app_rss_key = 579 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len; 580 581 if (use_app_rss_key && 582 (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len != 583 rss_hash_default_key_len)) { 584 /* MLX5 RSS only support 40bytes key. */ 585 return EINVAL; 586 } 587 priv->rss_conf.rss_key = 588 rte_realloc(priv->rss_conf.rss_key, 589 rss_hash_default_key_len, 0); 590 if (!priv->rss_conf.rss_key) { 591 ERROR("cannot allocate RSS hash key memory (%u)", rxqs_n); 592 return ENOMEM; 593 } 594 memcpy(priv->rss_conf.rss_key, 595 use_app_rss_key ? 596 dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key : 597 rss_hash_default_key, 598 rss_hash_default_key_len); 599 priv->rss_conf.rss_key_len = rss_hash_default_key_len; 600 priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf; 601 priv->rxqs = (void *)dev->data->rx_queues; 602 priv->txqs = (void *)dev->data->tx_queues; 603 if (txqs_n != priv->txqs_n) { 604 INFO("%p: TX queues number update: %u -> %u", 605 (void *)dev, priv->txqs_n, txqs_n); 606 priv->txqs_n = txqs_n; 607 } 608 if (rxqs_n > priv->ind_table_max_size) { 609 ERROR("cannot handle this many RX queues (%u)", rxqs_n); 610 return EINVAL; 611 } 612 if (rxqs_n == priv->rxqs_n) 613 return 0; 614 INFO("%p: RX queues number update: %u -> %u", 615 (void *)dev, priv->rxqs_n, rxqs_n); 616 priv->rxqs_n = rxqs_n; 617 /* If the requested number of RX queues is not a power of two, use the 618 * maximum indirection table size for better balancing. 619 * The result is always rounded to the next power of two. */ 620 reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ? 621 priv->ind_table_max_size : 622 rxqs_n)); 623 if (priv_rss_reta_index_resize(priv, reta_idx_n)) 624 return ENOMEM; 625 /* When the number of RX queues is not a power of two, the remaining 626 * table entries are padded with reused WQs and hashes are not spread 627 * uniformly. */ 628 for (i = 0, j = 0; (i != reta_idx_n); ++i) { 629 (*priv->reta_idx)[i] = j; 630 if (++j == rxqs_n) 631 j = 0; 632 } 633 return 0; 634 } 635 636 /** 637 * DPDK callback for Ethernet device configuration. 638 * 639 * @param dev 640 * Pointer to Ethernet device structure. 641 * 642 * @return 643 * 0 on success, negative errno value on failure. 644 */ 645 int 646 mlx5_dev_configure(struct rte_eth_dev *dev) 647 { 648 struct priv *priv = dev->data->dev_private; 649 int ret; 650 651 if (mlx5_is_secondary()) 652 return -E_RTE_SECONDARY; 653 654 priv_lock(priv); 655 ret = dev_configure(dev); 656 assert(ret >= 0); 657 priv_unlock(priv); 658 return -ret; 659 } 660 661 /** 662 * DPDK callback to get information about the device. 663 * 664 * @param dev 665 * Pointer to Ethernet device structure. 666 * @param[out] info 667 * Info structure output buffer. 668 */ 669 void 670 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) 671 { 672 struct priv *priv = mlx5_get_priv(dev); 673 unsigned int max; 674 char ifname[IF_NAMESIZE]; 675 676 info->pci_dev = RTE_ETH_DEV_TO_PCI(dev); 677 678 priv_lock(priv); 679 /* FIXME: we should ask the device for these values. */ 680 info->min_rx_bufsize = 32; 681 info->max_rx_pktlen = 65536; 682 /* 683 * Since we need one CQ per QP, the limit is the minimum number 684 * between the two values. 685 */ 686 max = RTE_MIN(priv->device_attr.orig_attr.max_cq, 687 priv->device_attr.orig_attr.max_qp); 688 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */ 689 if (max >= 65535) 690 max = 65535; 691 info->max_rx_queues = max; 692 info->max_tx_queues = max; 693 info->max_mac_addrs = RTE_DIM(priv->mac); 694 info->rx_offload_capa = 695 (priv->hw_csum ? 696 (DEV_RX_OFFLOAD_IPV4_CKSUM | 697 DEV_RX_OFFLOAD_UDP_CKSUM | 698 DEV_RX_OFFLOAD_TCP_CKSUM) : 699 0) | 700 (priv->hw_vlan_strip ? DEV_RX_OFFLOAD_VLAN_STRIP : 0); 701 if (!priv->mps) 702 info->tx_offload_capa = DEV_TX_OFFLOAD_VLAN_INSERT; 703 if (priv->hw_csum) 704 info->tx_offload_capa |= 705 (DEV_TX_OFFLOAD_IPV4_CKSUM | 706 DEV_TX_OFFLOAD_UDP_CKSUM | 707 DEV_TX_OFFLOAD_TCP_CKSUM); 708 if (priv->tso) 709 info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO; 710 if (priv->tunnel_en) 711 info->tx_offload_capa |= (DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM | 712 DEV_TX_OFFLOAD_VXLAN_TNL_TSO | 713 DEV_TX_OFFLOAD_GRE_TNL_TSO); 714 if (priv_get_ifname(priv, &ifname) == 0) 715 info->if_index = if_nametoindex(ifname); 716 info->reta_size = priv->reta_idx_n ? 717 priv->reta_idx_n : priv->ind_table_max_size; 718 info->hash_key_size = priv->rss_conf.rss_key_len; 719 info->speed_capa = priv->link_speed_capa; 720 priv_unlock(priv); 721 } 722 723 const uint32_t * 724 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev) 725 { 726 static const uint32_t ptypes[] = { 727 /* refers to rxq_cq_to_pkt_type() */ 728 RTE_PTYPE_L2_ETHER, 729 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN, 730 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN, 731 RTE_PTYPE_L4_NONFRAG, 732 RTE_PTYPE_L4_FRAG, 733 RTE_PTYPE_L4_TCP, 734 RTE_PTYPE_L4_UDP, 735 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN, 736 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN, 737 RTE_PTYPE_INNER_L4_NONFRAG, 738 RTE_PTYPE_INNER_L4_FRAG, 739 RTE_PTYPE_INNER_L4_TCP, 740 RTE_PTYPE_INNER_L4_UDP, 741 RTE_PTYPE_UNKNOWN 742 }; 743 744 if (dev->rx_pkt_burst == mlx5_rx_burst || 745 dev->rx_pkt_burst == mlx5_rx_burst_vec) 746 return ptypes; 747 return NULL; 748 } 749 750 /** 751 * DPDK callback to retrieve physical link information. 752 * 753 * @param dev 754 * Pointer to Ethernet device structure. 755 * @param wait_to_complete 756 * Wait for request completion (ignored). 757 */ 758 static int 759 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, int wait_to_complete) 760 { 761 struct priv *priv = mlx5_get_priv(dev); 762 struct ethtool_cmd edata = { 763 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */ 764 }; 765 struct ifreq ifr; 766 struct rte_eth_link dev_link; 767 int link_speed = 0; 768 769 /* priv_lock() is not taken to allow concurrent calls. */ 770 771 (void)wait_to_complete; 772 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) { 773 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno)); 774 return -1; 775 } 776 memset(&dev_link, 0, sizeof(dev_link)); 777 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) && 778 (ifr.ifr_flags & IFF_RUNNING)); 779 ifr.ifr_data = (void *)&edata; 780 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 781 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s", 782 strerror(errno)); 783 return -1; 784 } 785 link_speed = ethtool_cmd_speed(&edata); 786 if (link_speed == -1) 787 dev_link.link_speed = 0; 788 else 789 dev_link.link_speed = link_speed; 790 priv->link_speed_capa = 0; 791 if (edata.supported & SUPPORTED_Autoneg) 792 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 793 if (edata.supported & (SUPPORTED_1000baseT_Full | 794 SUPPORTED_1000baseKX_Full)) 795 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 796 if (edata.supported & SUPPORTED_10000baseKR_Full) 797 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 798 if (edata.supported & (SUPPORTED_40000baseKR4_Full | 799 SUPPORTED_40000baseCR4_Full | 800 SUPPORTED_40000baseSR4_Full | 801 SUPPORTED_40000baseLR4_Full)) 802 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 803 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ? 804 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 805 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 806 ETH_LINK_SPEED_FIXED); 807 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) { 808 /* Link status changed. */ 809 dev->data->dev_link = dev_link; 810 return 0; 811 } 812 /* Link status is still the same. */ 813 return -1; 814 } 815 816 /** 817 * Retrieve physical link information (unlocked version using new ioctl). 818 * 819 * @param dev 820 * Pointer to Ethernet device structure. 821 * @param wait_to_complete 822 * Wait for request completion (ignored). 823 */ 824 static int 825 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete) 826 { 827 struct priv *priv = mlx5_get_priv(dev); 828 struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS }; 829 struct ifreq ifr; 830 struct rte_eth_link dev_link; 831 uint64_t sc; 832 833 (void)wait_to_complete; 834 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) { 835 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno)); 836 return -1; 837 } 838 memset(&dev_link, 0, sizeof(dev_link)); 839 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) && 840 (ifr.ifr_flags & IFF_RUNNING)); 841 ifr.ifr_data = (void *)&gcmd; 842 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 843 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s", 844 strerror(errno)); 845 return -1; 846 } 847 gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords; 848 849 alignas(struct ethtool_link_settings) 850 uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) + 851 sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3]; 852 struct ethtool_link_settings *ecmd = (void *)data; 853 854 *ecmd = gcmd; 855 ifr.ifr_data = (void *)ecmd; 856 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 857 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s", 858 strerror(errno)); 859 return -1; 860 } 861 dev_link.link_speed = ecmd->speed; 862 sc = ecmd->link_mode_masks[0] | 863 ((uint64_t)ecmd->link_mode_masks[1] << 32); 864 priv->link_speed_capa = 0; 865 if (sc & ETHTOOL_LINK_MODE_Autoneg_BIT) 866 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 867 if (sc & (ETHTOOL_LINK_MODE_1000baseT_Full_BIT | 868 ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)) 869 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 870 if (sc & (ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT | 871 ETHTOOL_LINK_MODE_10000baseKR_Full_BIT | 872 ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)) 873 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 874 if (sc & (ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT | 875 ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)) 876 priv->link_speed_capa |= ETH_LINK_SPEED_20G; 877 if (sc & (ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT | 878 ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT | 879 ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT | 880 ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)) 881 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 882 if (sc & (ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT | 883 ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT | 884 ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT | 885 ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)) 886 priv->link_speed_capa |= ETH_LINK_SPEED_56G; 887 if (sc & (ETHTOOL_LINK_MODE_25000baseCR_Full_BIT | 888 ETHTOOL_LINK_MODE_25000baseKR_Full_BIT | 889 ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)) 890 priv->link_speed_capa |= ETH_LINK_SPEED_25G; 891 if (sc & (ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT | 892 ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)) 893 priv->link_speed_capa |= ETH_LINK_SPEED_50G; 894 if (sc & (ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT | 895 ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT | 896 ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT | 897 ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)) 898 priv->link_speed_capa |= ETH_LINK_SPEED_100G; 899 dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ? 900 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 901 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 902 ETH_LINK_SPEED_FIXED); 903 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) { 904 /* Link status changed. */ 905 dev->data->dev_link = dev_link; 906 return 0; 907 } 908 /* Link status is still the same. */ 909 return -1; 910 } 911 912 /** 913 * DPDK callback to retrieve physical link information. 914 * 915 * @param dev 916 * Pointer to Ethernet device structure. 917 * @param wait_to_complete 918 * Wait for request completion (ignored). 919 */ 920 int 921 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete) 922 { 923 struct utsname utsname; 924 int ver[3]; 925 926 if (uname(&utsname) == -1 || 927 sscanf(utsname.release, "%d.%d.%d", 928 &ver[0], &ver[1], &ver[2]) != 3 || 929 KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0)) 930 return mlx5_link_update_unlocked_gset(dev, wait_to_complete); 931 return mlx5_link_update_unlocked_gs(dev, wait_to_complete); 932 } 933 934 /** 935 * DPDK callback to change the MTU. 936 * 937 * @param dev 938 * Pointer to Ethernet device structure. 939 * @param in_mtu 940 * New MTU. 941 * 942 * @return 943 * 0 on success, negative errno value on failure. 944 */ 945 int 946 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu) 947 { 948 struct priv *priv = dev->data->dev_private; 949 uint16_t kern_mtu; 950 int ret = 0; 951 952 if (mlx5_is_secondary()) 953 return -E_RTE_SECONDARY; 954 955 priv_lock(priv); 956 ret = priv_get_mtu(priv, &kern_mtu); 957 if (ret) 958 goto out; 959 /* Set kernel interface MTU first. */ 960 ret = priv_set_mtu(priv, mtu); 961 if (ret) 962 goto out; 963 ret = priv_get_mtu(priv, &kern_mtu); 964 if (ret) 965 goto out; 966 if (kern_mtu == mtu) { 967 priv->mtu = mtu; 968 DEBUG("adapter port %u MTU set to %u", priv->port, mtu); 969 } 970 priv_unlock(priv); 971 return 0; 972 out: 973 ret = errno; 974 WARN("cannot set port %u MTU to %u: %s", priv->port, mtu, 975 strerror(ret)); 976 priv_unlock(priv); 977 assert(ret >= 0); 978 return -ret; 979 } 980 981 /** 982 * DPDK callback to get flow control status. 983 * 984 * @param dev 985 * Pointer to Ethernet device structure. 986 * @param[out] fc_conf 987 * Flow control output buffer. 988 * 989 * @return 990 * 0 on success, negative errno value on failure. 991 */ 992 int 993 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 994 { 995 struct priv *priv = dev->data->dev_private; 996 struct ifreq ifr; 997 struct ethtool_pauseparam ethpause = { 998 .cmd = ETHTOOL_GPAUSEPARAM 999 }; 1000 int ret; 1001 1002 if (mlx5_is_secondary()) 1003 return -E_RTE_SECONDARY; 1004 1005 ifr.ifr_data = (void *)ðpause; 1006 priv_lock(priv); 1007 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 1008 ret = errno; 1009 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)" 1010 " failed: %s", 1011 strerror(ret)); 1012 goto out; 1013 } 1014 1015 fc_conf->autoneg = ethpause.autoneg; 1016 if (ethpause.rx_pause && ethpause.tx_pause) 1017 fc_conf->mode = RTE_FC_FULL; 1018 else if (ethpause.rx_pause) 1019 fc_conf->mode = RTE_FC_RX_PAUSE; 1020 else if (ethpause.tx_pause) 1021 fc_conf->mode = RTE_FC_TX_PAUSE; 1022 else 1023 fc_conf->mode = RTE_FC_NONE; 1024 ret = 0; 1025 1026 out: 1027 priv_unlock(priv); 1028 assert(ret >= 0); 1029 return -ret; 1030 } 1031 1032 /** 1033 * DPDK callback to modify flow control parameters. 1034 * 1035 * @param dev 1036 * Pointer to Ethernet device structure. 1037 * @param[in] fc_conf 1038 * Flow control parameters. 1039 * 1040 * @return 1041 * 0 on success, negative errno value on failure. 1042 */ 1043 int 1044 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 1045 { 1046 struct priv *priv = dev->data->dev_private; 1047 struct ifreq ifr; 1048 struct ethtool_pauseparam ethpause = { 1049 .cmd = ETHTOOL_SPAUSEPARAM 1050 }; 1051 int ret; 1052 1053 if (mlx5_is_secondary()) 1054 return -E_RTE_SECONDARY; 1055 1056 ifr.ifr_data = (void *)ðpause; 1057 ethpause.autoneg = fc_conf->autoneg; 1058 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 1059 (fc_conf->mode & RTE_FC_RX_PAUSE)) 1060 ethpause.rx_pause = 1; 1061 else 1062 ethpause.rx_pause = 0; 1063 1064 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 1065 (fc_conf->mode & RTE_FC_TX_PAUSE)) 1066 ethpause.tx_pause = 1; 1067 else 1068 ethpause.tx_pause = 0; 1069 1070 priv_lock(priv); 1071 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 1072 ret = errno; 1073 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)" 1074 " failed: %s", 1075 strerror(ret)); 1076 goto out; 1077 } 1078 ret = 0; 1079 1080 out: 1081 priv_unlock(priv); 1082 assert(ret >= 0); 1083 return -ret; 1084 } 1085 1086 /** 1087 * Get PCI information from struct ibv_device. 1088 * 1089 * @param device 1090 * Pointer to Ethernet device structure. 1091 * @param[out] pci_addr 1092 * PCI bus address output buffer. 1093 * 1094 * @return 1095 * 0 on success, -1 on failure and errno is set. 1096 */ 1097 int 1098 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device, 1099 struct rte_pci_addr *pci_addr) 1100 { 1101 FILE *file; 1102 char line[32]; 1103 MKSTR(path, "%s/device/uevent", device->ibdev_path); 1104 1105 file = fopen(path, "rb"); 1106 if (file == NULL) 1107 return -1; 1108 while (fgets(line, sizeof(line), file) == line) { 1109 size_t len = strlen(line); 1110 int ret; 1111 1112 /* Truncate long lines. */ 1113 if (len == (sizeof(line) - 1)) 1114 while (line[(len - 1)] != '\n') { 1115 ret = fgetc(file); 1116 if (ret == EOF) 1117 break; 1118 line[(len - 1)] = ret; 1119 } 1120 /* Extract information. */ 1121 if (sscanf(line, 1122 "PCI_SLOT_NAME=" 1123 "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n", 1124 &pci_addr->domain, 1125 &pci_addr->bus, 1126 &pci_addr->devid, 1127 &pci_addr->function) == 4) { 1128 ret = 0; 1129 break; 1130 } 1131 } 1132 fclose(file); 1133 return 0; 1134 } 1135 1136 /** 1137 * Update the link status. 1138 * 1139 * @param priv 1140 * Pointer to private structure. 1141 * 1142 * @return 1143 * Zero if the callback process can be called immediately. 1144 */ 1145 static int 1146 priv_link_status_update(struct priv *priv) 1147 { 1148 struct rte_eth_link *link = &priv->dev->data->dev_link; 1149 1150 mlx5_link_update(priv->dev, 0); 1151 if (((link->link_speed == 0) && link->link_status) || 1152 ((link->link_speed != 0) && !link->link_status)) { 1153 /* 1154 * Inconsistent status. Event likely occurred before the 1155 * kernel netdevice exposes the new status. 1156 */ 1157 if (!priv->pending_alarm) { 1158 priv->pending_alarm = 1; 1159 rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US, 1160 mlx5_dev_link_status_handler, 1161 priv->dev); 1162 } 1163 return 1; 1164 } else if (unlikely(priv->pending_alarm)) { 1165 /* Link interrupt occurred while alarm is already scheduled. */ 1166 priv->pending_alarm = 0; 1167 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, priv->dev); 1168 } 1169 return 0; 1170 } 1171 1172 /** 1173 * Device status handler. 1174 * 1175 * @param priv 1176 * Pointer to private structure. 1177 * @param events 1178 * Pointer to event flags holder. 1179 * 1180 * @return 1181 * Events bitmap of callback process which can be called immediately. 1182 */ 1183 static uint32_t 1184 priv_dev_status_handler(struct priv *priv) 1185 { 1186 struct ibv_async_event event; 1187 uint32_t ret = 0; 1188 1189 /* Read all message and acknowledge them. */ 1190 for (;;) { 1191 if (ibv_get_async_event(priv->ctx, &event)) 1192 break; 1193 if ((event.event_type == IBV_EVENT_PORT_ACTIVE || 1194 event.event_type == IBV_EVENT_PORT_ERR) && 1195 (priv->dev->data->dev_conf.intr_conf.lsc == 1)) 1196 ret |= (1 << RTE_ETH_EVENT_INTR_LSC); 1197 else if (event.event_type == IBV_EVENT_DEVICE_FATAL && 1198 priv->dev->data->dev_conf.intr_conf.rmv == 1) 1199 ret |= (1 << RTE_ETH_EVENT_INTR_RMV); 1200 else 1201 DEBUG("event type %d on port %d not handled", 1202 event.event_type, event.element.port_num); 1203 ibv_ack_async_event(&event); 1204 } 1205 if (ret & (1 << RTE_ETH_EVENT_INTR_LSC)) 1206 if (priv_link_status_update(priv)) 1207 ret &= ~(1 << RTE_ETH_EVENT_INTR_LSC); 1208 return ret; 1209 } 1210 1211 /** 1212 * Handle delayed link status event. 1213 * 1214 * @param arg 1215 * Registered argument. 1216 */ 1217 void 1218 mlx5_dev_link_status_handler(void *arg) 1219 { 1220 struct rte_eth_dev *dev = arg; 1221 struct priv *priv = dev->data->dev_private; 1222 int ret; 1223 1224 priv_lock(priv); 1225 assert(priv->pending_alarm == 1); 1226 priv->pending_alarm = 0; 1227 ret = priv_link_status_update(priv); 1228 priv_unlock(priv); 1229 if (!ret) 1230 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL, 1231 NULL); 1232 } 1233 1234 /** 1235 * Handle interrupts from the NIC. 1236 * 1237 * @param[in] intr_handle 1238 * Interrupt handler. 1239 * @param cb_arg 1240 * Callback argument. 1241 */ 1242 void 1243 mlx5_dev_interrupt_handler(void *cb_arg) 1244 { 1245 struct rte_eth_dev *dev = cb_arg; 1246 struct priv *priv = dev->data->dev_private; 1247 uint32_t events; 1248 1249 priv_lock(priv); 1250 events = priv_dev_status_handler(priv); 1251 priv_unlock(priv); 1252 if (events & (1 << RTE_ETH_EVENT_INTR_LSC)) 1253 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL, 1254 NULL); 1255 if (events & (1 << RTE_ETH_EVENT_INTR_RMV)) 1256 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL, 1257 NULL); 1258 } 1259 1260 /** 1261 * Handle interrupts from the socket. 1262 * 1263 * @param cb_arg 1264 * Callback argument. 1265 */ 1266 static void 1267 mlx5_dev_handler_socket(void *cb_arg) 1268 { 1269 struct rte_eth_dev *dev = cb_arg; 1270 struct priv *priv = dev->data->dev_private; 1271 1272 priv_lock(priv); 1273 priv_socket_handle(priv); 1274 priv_unlock(priv); 1275 } 1276 1277 /** 1278 * Uninstall interrupt handler. 1279 * 1280 * @param priv 1281 * Pointer to private structure. 1282 * @param dev 1283 * Pointer to the rte_eth_dev structure. 1284 */ 1285 void 1286 priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev) 1287 { 1288 if (dev->data->dev_conf.intr_conf.lsc || 1289 dev->data->dev_conf.intr_conf.rmv) 1290 rte_intr_callback_unregister(&priv->intr_handle, 1291 mlx5_dev_interrupt_handler, dev); 1292 if (priv->primary_socket) 1293 rte_intr_callback_unregister(&priv->intr_handle_socket, 1294 mlx5_dev_handler_socket, dev); 1295 if (priv->pending_alarm) 1296 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev); 1297 priv->pending_alarm = 0; 1298 priv->intr_handle.fd = 0; 1299 priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; 1300 priv->intr_handle_socket.fd = 0; 1301 priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN; 1302 } 1303 1304 /** 1305 * Install interrupt handler. 1306 * 1307 * @param priv 1308 * Pointer to private structure. 1309 * @param dev 1310 * Pointer to the rte_eth_dev structure. 1311 */ 1312 void 1313 priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev) 1314 { 1315 int rc, flags; 1316 1317 assert(!mlx5_is_secondary()); 1318 assert(priv->ctx->async_fd > 0); 1319 flags = fcntl(priv->ctx->async_fd, F_GETFL); 1320 rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK); 1321 if (rc < 0) { 1322 INFO("failed to change file descriptor async event queue"); 1323 dev->data->dev_conf.intr_conf.lsc = 0; 1324 dev->data->dev_conf.intr_conf.rmv = 0; 1325 } 1326 if (dev->data->dev_conf.intr_conf.lsc || 1327 dev->data->dev_conf.intr_conf.rmv) { 1328 priv->intr_handle.fd = priv->ctx->async_fd; 1329 priv->intr_handle.type = RTE_INTR_HANDLE_EXT; 1330 rte_intr_callback_register(&priv->intr_handle, 1331 mlx5_dev_interrupt_handler, dev); 1332 } 1333 1334 rc = priv_socket_init(priv); 1335 if (!rc && priv->primary_socket) { 1336 priv->intr_handle_socket.fd = priv->primary_socket; 1337 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT; 1338 rte_intr_callback_register(&priv->intr_handle_socket, 1339 mlx5_dev_handler_socket, dev); 1340 } 1341 } 1342 1343 /** 1344 * Change the link state (UP / DOWN). 1345 * 1346 * @param priv 1347 * Pointer to private data structure. 1348 * @param dev 1349 * Pointer to rte_eth_dev structure. 1350 * @param up 1351 * Nonzero for link up, otherwise link down. 1352 * 1353 * @return 1354 * 0 on success, errno value on failure. 1355 */ 1356 static int 1357 priv_dev_set_link(struct priv *priv, struct rte_eth_dev *dev, int up) 1358 { 1359 int err; 1360 1361 if (up) { 1362 err = priv_set_flags(priv, ~IFF_UP, IFF_UP); 1363 if (err) 1364 return err; 1365 priv_dev_select_tx_function(priv, dev); 1366 priv_dev_select_rx_function(priv, dev); 1367 } else { 1368 err = priv_set_flags(priv, ~IFF_UP, ~IFF_UP); 1369 if (err) 1370 return err; 1371 dev->rx_pkt_burst = removed_rx_burst; 1372 dev->tx_pkt_burst = removed_tx_burst; 1373 } 1374 return 0; 1375 } 1376 1377 /** 1378 * DPDK callback to bring the link DOWN. 1379 * 1380 * @param dev 1381 * Pointer to Ethernet device structure. 1382 * 1383 * @return 1384 * 0 on success, errno value on failure. 1385 */ 1386 int 1387 mlx5_set_link_down(struct rte_eth_dev *dev) 1388 { 1389 struct priv *priv = dev->data->dev_private; 1390 int err; 1391 1392 priv_lock(priv); 1393 err = priv_dev_set_link(priv, dev, 0); 1394 priv_unlock(priv); 1395 return err; 1396 } 1397 1398 /** 1399 * DPDK callback to bring the link UP. 1400 * 1401 * @param dev 1402 * Pointer to Ethernet device structure. 1403 * 1404 * @return 1405 * 0 on success, errno value on failure. 1406 */ 1407 int 1408 mlx5_set_link_up(struct rte_eth_dev *dev) 1409 { 1410 struct priv *priv = dev->data->dev_private; 1411 int err; 1412 1413 priv_lock(priv); 1414 err = priv_dev_set_link(priv, dev, 1); 1415 priv_unlock(priv); 1416 return err; 1417 } 1418 1419 /** 1420 * Configure the TX function to use. 1421 * 1422 * @param priv 1423 * Pointer to private data structure. 1424 * @param dev 1425 * Pointer to rte_eth_dev structure. 1426 */ 1427 void 1428 priv_dev_select_tx_function(struct priv *priv, struct rte_eth_dev *dev) 1429 { 1430 assert(priv != NULL); 1431 assert(dev != NULL); 1432 dev->tx_pkt_burst = mlx5_tx_burst; 1433 /* Select appropriate TX function. */ 1434 if (priv->mps == MLX5_MPW_ENHANCED) { 1435 if (priv_check_vec_tx_support(priv) > 0) { 1436 if (priv_check_raw_vec_tx_support(priv) > 0) 1437 dev->tx_pkt_burst = mlx5_tx_burst_raw_vec; 1438 else 1439 dev->tx_pkt_burst = mlx5_tx_burst_vec; 1440 DEBUG("selected Enhanced MPW TX vectorized function"); 1441 } else { 1442 dev->tx_pkt_burst = mlx5_tx_burst_empw; 1443 DEBUG("selected Enhanced MPW TX function"); 1444 } 1445 } else if (priv->mps && priv->txq_inline) { 1446 dev->tx_pkt_burst = mlx5_tx_burst_mpw_inline; 1447 DEBUG("selected MPW inline TX function"); 1448 } else if (priv->mps) { 1449 dev->tx_pkt_burst = mlx5_tx_burst_mpw; 1450 DEBUG("selected MPW TX function"); 1451 } 1452 } 1453 1454 /** 1455 * Configure the RX function to use. 1456 * 1457 * @param priv 1458 * Pointer to private data structure. 1459 * @param dev 1460 * Pointer to rte_eth_dev structure. 1461 */ 1462 void 1463 priv_dev_select_rx_function(struct priv *priv, struct rte_eth_dev *dev) 1464 { 1465 assert(priv != NULL); 1466 assert(dev != NULL); 1467 if (priv_check_vec_rx_support(priv) > 0) { 1468 dev->rx_pkt_burst = mlx5_rx_burst_vec; 1469 DEBUG("selected RX vectorized function"); 1470 } else { 1471 dev->rx_pkt_burst = mlx5_rx_burst; 1472 } 1473 } 1474