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; 554 555 if (use_app_rss_key && 556 (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len != 557 rss_hash_default_key_len)) { 558 /* MLX5 RSS only support 40bytes key. */ 559 return EINVAL; 560 } 561 priv->rss_conf.rss_key = 562 rte_realloc(priv->rss_conf.rss_key, 563 rss_hash_default_key_len, 0); 564 if (!priv->rss_conf.rss_key) { 565 ERROR("cannot allocate RSS hash key memory (%u)", rxqs_n); 566 return ENOMEM; 567 } 568 memcpy(priv->rss_conf.rss_key, 569 use_app_rss_key ? 570 dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key : 571 rss_hash_default_key, 572 rss_hash_default_key_len); 573 priv->rss_conf.rss_key_len = rss_hash_default_key_len; 574 priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf; 575 priv->rxqs = (void *)dev->data->rx_queues; 576 priv->txqs = (void *)dev->data->tx_queues; 577 if (txqs_n != priv->txqs_n) { 578 INFO("%p: TX queues number update: %u -> %u", 579 (void *)dev, priv->txqs_n, txqs_n); 580 priv->txqs_n = txqs_n; 581 } 582 if (rxqs_n > priv->ind_table_max_size) { 583 ERROR("cannot handle this many RX queues (%u)", rxqs_n); 584 return EINVAL; 585 } 586 if (rxqs_n == priv->rxqs_n) 587 return 0; 588 INFO("%p: RX queues number update: %u -> %u", 589 (void *)dev, priv->rxqs_n, rxqs_n); 590 priv->rxqs_n = rxqs_n; 591 /* If the requested number of RX queues is not a power of two, use the 592 * maximum indirection table size for better balancing. 593 * The result is always rounded to the next power of two. */ 594 reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ? 595 priv->ind_table_max_size : 596 rxqs_n)); 597 if (priv_rss_reta_index_resize(priv, reta_idx_n)) 598 return ENOMEM; 599 /* When the number of RX queues is not a power of two, the remaining 600 * table entries are padded with reused WQs and hashes are not spread 601 * uniformly. */ 602 for (i = 0, j = 0; (i != reta_idx_n); ++i) { 603 (*priv->reta_idx)[i] = j; 604 if (++j == rxqs_n) 605 j = 0; 606 } 607 return 0; 608 } 609 610 /** 611 * DPDK callback for Ethernet device configuration. 612 * 613 * @param dev 614 * Pointer to Ethernet device structure. 615 * 616 * @return 617 * 0 on success, negative errno value on failure. 618 */ 619 int 620 mlx5_dev_configure(struct rte_eth_dev *dev) 621 { 622 struct priv *priv = dev->data->dev_private; 623 int ret; 624 625 priv_lock(priv); 626 ret = dev_configure(dev); 627 assert(ret >= 0); 628 priv_unlock(priv); 629 return -ret; 630 } 631 632 /** 633 * DPDK callback to get information about the device. 634 * 635 * @param dev 636 * Pointer to Ethernet device structure. 637 * @param[out] info 638 * Info structure output buffer. 639 */ 640 void 641 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) 642 { 643 struct priv *priv = dev->data->dev_private; 644 unsigned int max; 645 char ifname[IF_NAMESIZE]; 646 647 info->pci_dev = RTE_ETH_DEV_TO_PCI(dev); 648 649 priv_lock(priv); 650 /* FIXME: we should ask the device for these values. */ 651 info->min_rx_bufsize = 32; 652 info->max_rx_pktlen = 65536; 653 /* 654 * Since we need one CQ per QP, the limit is the minimum number 655 * between the two values. 656 */ 657 max = RTE_MIN(priv->device_attr.orig_attr.max_cq, 658 priv->device_attr.orig_attr.max_qp); 659 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */ 660 if (max >= 65535) 661 max = 65535; 662 info->max_rx_queues = max; 663 info->max_tx_queues = max; 664 info->max_mac_addrs = RTE_DIM(priv->mac); 665 info->rx_offload_capa = 666 (priv->hw_csum ? 667 (DEV_RX_OFFLOAD_IPV4_CKSUM | 668 DEV_RX_OFFLOAD_UDP_CKSUM | 669 DEV_RX_OFFLOAD_TCP_CKSUM) : 670 0) | 671 (priv->hw_vlan_strip ? DEV_RX_OFFLOAD_VLAN_STRIP : 0) | 672 DEV_RX_OFFLOAD_TIMESTAMP; 673 674 if (!priv->mps) 675 info->tx_offload_capa = DEV_TX_OFFLOAD_VLAN_INSERT; 676 if (priv->hw_csum) 677 info->tx_offload_capa |= 678 (DEV_TX_OFFLOAD_IPV4_CKSUM | 679 DEV_TX_OFFLOAD_UDP_CKSUM | 680 DEV_TX_OFFLOAD_TCP_CKSUM); 681 if (priv->tso) 682 info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO; 683 if (priv->tunnel_en) 684 info->tx_offload_capa |= (DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM | 685 DEV_TX_OFFLOAD_VXLAN_TNL_TSO | 686 DEV_TX_OFFLOAD_GRE_TNL_TSO); 687 if (priv_get_ifname(priv, &ifname) == 0) 688 info->if_index = if_nametoindex(ifname); 689 info->reta_size = priv->reta_idx_n ? 690 priv->reta_idx_n : priv->ind_table_max_size; 691 info->hash_key_size = priv->rss_conf.rss_key_len; 692 info->speed_capa = priv->link_speed_capa; 693 priv_unlock(priv); 694 } 695 696 const uint32_t * 697 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev) 698 { 699 static const uint32_t ptypes[] = { 700 /* refers to rxq_cq_to_pkt_type() */ 701 RTE_PTYPE_L2_ETHER, 702 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN, 703 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN, 704 RTE_PTYPE_L4_NONFRAG, 705 RTE_PTYPE_L4_FRAG, 706 RTE_PTYPE_L4_TCP, 707 RTE_PTYPE_L4_UDP, 708 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN, 709 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN, 710 RTE_PTYPE_INNER_L4_NONFRAG, 711 RTE_PTYPE_INNER_L4_FRAG, 712 RTE_PTYPE_INNER_L4_TCP, 713 RTE_PTYPE_INNER_L4_UDP, 714 RTE_PTYPE_UNKNOWN 715 }; 716 717 if (dev->rx_pkt_burst == mlx5_rx_burst || 718 dev->rx_pkt_burst == mlx5_rx_burst_vec) 719 return ptypes; 720 return NULL; 721 } 722 723 /** 724 * DPDK callback to retrieve physical link information. 725 * 726 * @param dev 727 * Pointer to Ethernet device structure. 728 * @param wait_to_complete 729 * Wait for request completion (ignored). 730 */ 731 static int 732 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, int wait_to_complete) 733 { 734 struct priv *priv = dev->data->dev_private; 735 struct ethtool_cmd edata = { 736 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */ 737 }; 738 struct ifreq ifr; 739 struct rte_eth_link dev_link; 740 int link_speed = 0; 741 742 /* priv_lock() is not taken to allow concurrent calls. */ 743 744 (void)wait_to_complete; 745 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) { 746 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno)); 747 return -1; 748 } 749 memset(&dev_link, 0, sizeof(dev_link)); 750 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) && 751 (ifr.ifr_flags & IFF_RUNNING)); 752 ifr.ifr_data = (void *)&edata; 753 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 754 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s", 755 strerror(errno)); 756 return -1; 757 } 758 link_speed = ethtool_cmd_speed(&edata); 759 if (link_speed == -1) 760 dev_link.link_speed = 0; 761 else 762 dev_link.link_speed = link_speed; 763 priv->link_speed_capa = 0; 764 if (edata.supported & SUPPORTED_Autoneg) 765 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 766 if (edata.supported & (SUPPORTED_1000baseT_Full | 767 SUPPORTED_1000baseKX_Full)) 768 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 769 if (edata.supported & SUPPORTED_10000baseKR_Full) 770 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 771 if (edata.supported & (SUPPORTED_40000baseKR4_Full | 772 SUPPORTED_40000baseCR4_Full | 773 SUPPORTED_40000baseSR4_Full | 774 SUPPORTED_40000baseLR4_Full)) 775 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 776 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ? 777 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 778 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 779 ETH_LINK_SPEED_FIXED); 780 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) { 781 /* Link status changed. */ 782 dev->data->dev_link = dev_link; 783 return 0; 784 } 785 /* Link status is still the same. */ 786 return -1; 787 } 788 789 /** 790 * Retrieve physical link information (unlocked version using new ioctl). 791 * 792 * @param dev 793 * Pointer to Ethernet device structure. 794 * @param wait_to_complete 795 * Wait for request completion (ignored). 796 */ 797 static int 798 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete) 799 { 800 struct priv *priv = dev->data->dev_private; 801 struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS }; 802 struct ifreq ifr; 803 struct rte_eth_link dev_link; 804 uint64_t sc; 805 806 (void)wait_to_complete; 807 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) { 808 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno)); 809 return -1; 810 } 811 memset(&dev_link, 0, sizeof(dev_link)); 812 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) && 813 (ifr.ifr_flags & IFF_RUNNING)); 814 ifr.ifr_data = (void *)&gcmd; 815 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 816 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s", 817 strerror(errno)); 818 return -1; 819 } 820 gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords; 821 822 alignas(struct ethtool_link_settings) 823 uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) + 824 sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3]; 825 struct ethtool_link_settings *ecmd = (void *)data; 826 827 *ecmd = gcmd; 828 ifr.ifr_data = (void *)ecmd; 829 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 830 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s", 831 strerror(errno)); 832 return -1; 833 } 834 dev_link.link_speed = ecmd->speed; 835 sc = ecmd->link_mode_masks[0] | 836 ((uint64_t)ecmd->link_mode_masks[1] << 32); 837 priv->link_speed_capa = 0; 838 if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT)) 839 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 840 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) | 841 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT))) 842 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 843 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) | 844 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) | 845 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT))) 846 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 847 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) | 848 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT))) 849 priv->link_speed_capa |= ETH_LINK_SPEED_20G; 850 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) | 851 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) | 852 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) | 853 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT))) 854 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 855 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) | 856 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) | 857 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) | 858 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT))) 859 priv->link_speed_capa |= ETH_LINK_SPEED_56G; 860 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) | 861 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) | 862 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT))) 863 priv->link_speed_capa |= ETH_LINK_SPEED_25G; 864 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) | 865 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT))) 866 priv->link_speed_capa |= ETH_LINK_SPEED_50G; 867 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) | 868 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) | 869 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) | 870 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT))) 871 priv->link_speed_capa |= ETH_LINK_SPEED_100G; 872 dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ? 873 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 874 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 875 ETH_LINK_SPEED_FIXED); 876 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) { 877 /* Link status changed. */ 878 dev->data->dev_link = dev_link; 879 return 0; 880 } 881 /* Link status is still the same. */ 882 return -1; 883 } 884 885 /** 886 * DPDK callback to retrieve physical link information. 887 * 888 * @param dev 889 * Pointer to Ethernet device structure. 890 * @param wait_to_complete 891 * Wait for request completion (ignored). 892 */ 893 int 894 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete) 895 { 896 struct utsname utsname; 897 int ver[3]; 898 899 if (uname(&utsname) == -1 || 900 sscanf(utsname.release, "%d.%d.%d", 901 &ver[0], &ver[1], &ver[2]) != 3 || 902 KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0)) 903 return mlx5_link_update_unlocked_gset(dev, wait_to_complete); 904 return mlx5_link_update_unlocked_gs(dev, wait_to_complete); 905 } 906 907 /** 908 * DPDK callback to change the MTU. 909 * 910 * @param dev 911 * Pointer to Ethernet device structure. 912 * @param in_mtu 913 * New MTU. 914 * 915 * @return 916 * 0 on success, negative errno value on failure. 917 */ 918 int 919 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu) 920 { 921 struct priv *priv = dev->data->dev_private; 922 uint16_t kern_mtu; 923 int ret = 0; 924 925 priv_lock(priv); 926 ret = priv_get_mtu(priv, &kern_mtu); 927 if (ret) 928 goto out; 929 /* Set kernel interface MTU first. */ 930 ret = priv_set_mtu(priv, mtu); 931 if (ret) 932 goto out; 933 ret = priv_get_mtu(priv, &kern_mtu); 934 if (ret) 935 goto out; 936 if (kern_mtu == mtu) { 937 priv->mtu = mtu; 938 DEBUG("adapter port %u MTU set to %u", priv->port, mtu); 939 } 940 priv_unlock(priv); 941 return 0; 942 out: 943 ret = errno; 944 WARN("cannot set port %u MTU to %u: %s", priv->port, mtu, 945 strerror(ret)); 946 priv_unlock(priv); 947 assert(ret >= 0); 948 return -ret; 949 } 950 951 /** 952 * DPDK callback to get flow control status. 953 * 954 * @param dev 955 * Pointer to Ethernet device structure. 956 * @param[out] fc_conf 957 * Flow control output buffer. 958 * 959 * @return 960 * 0 on success, negative errno value on failure. 961 */ 962 int 963 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 964 { 965 struct priv *priv = dev->data->dev_private; 966 struct ifreq ifr; 967 struct ethtool_pauseparam ethpause = { 968 .cmd = ETHTOOL_GPAUSEPARAM 969 }; 970 int ret; 971 972 ifr.ifr_data = (void *)ðpause; 973 priv_lock(priv); 974 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 975 ret = errno; 976 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)" 977 " failed: %s", 978 strerror(ret)); 979 goto out; 980 } 981 982 fc_conf->autoneg = ethpause.autoneg; 983 if (ethpause.rx_pause && ethpause.tx_pause) 984 fc_conf->mode = RTE_FC_FULL; 985 else if (ethpause.rx_pause) 986 fc_conf->mode = RTE_FC_RX_PAUSE; 987 else if (ethpause.tx_pause) 988 fc_conf->mode = RTE_FC_TX_PAUSE; 989 else 990 fc_conf->mode = RTE_FC_NONE; 991 ret = 0; 992 993 out: 994 priv_unlock(priv); 995 assert(ret >= 0); 996 return -ret; 997 } 998 999 /** 1000 * DPDK callback to modify flow control parameters. 1001 * 1002 * @param dev 1003 * Pointer to Ethernet device structure. 1004 * @param[in] fc_conf 1005 * Flow control parameters. 1006 * 1007 * @return 1008 * 0 on success, negative errno value on failure. 1009 */ 1010 int 1011 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 1012 { 1013 struct priv *priv = dev->data->dev_private; 1014 struct ifreq ifr; 1015 struct ethtool_pauseparam ethpause = { 1016 .cmd = ETHTOOL_SPAUSEPARAM 1017 }; 1018 int ret; 1019 1020 ifr.ifr_data = (void *)ðpause; 1021 ethpause.autoneg = fc_conf->autoneg; 1022 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 1023 (fc_conf->mode & RTE_FC_RX_PAUSE)) 1024 ethpause.rx_pause = 1; 1025 else 1026 ethpause.rx_pause = 0; 1027 1028 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 1029 (fc_conf->mode & RTE_FC_TX_PAUSE)) 1030 ethpause.tx_pause = 1; 1031 else 1032 ethpause.tx_pause = 0; 1033 1034 priv_lock(priv); 1035 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 1036 ret = errno; 1037 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)" 1038 " failed: %s", 1039 strerror(ret)); 1040 goto out; 1041 } 1042 ret = 0; 1043 1044 out: 1045 priv_unlock(priv); 1046 assert(ret >= 0); 1047 return -ret; 1048 } 1049 1050 /** 1051 * Get PCI information from struct ibv_device. 1052 * 1053 * @param device 1054 * Pointer to Ethernet device structure. 1055 * @param[out] pci_addr 1056 * PCI bus address output buffer. 1057 * 1058 * @return 1059 * 0 on success, -1 on failure and errno is set. 1060 */ 1061 int 1062 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device, 1063 struct rte_pci_addr *pci_addr) 1064 { 1065 FILE *file; 1066 char line[32]; 1067 MKSTR(path, "%s/device/uevent", device->ibdev_path); 1068 1069 file = fopen(path, "rb"); 1070 if (file == NULL) 1071 return -1; 1072 while (fgets(line, sizeof(line), file) == line) { 1073 size_t len = strlen(line); 1074 int ret; 1075 1076 /* Truncate long lines. */ 1077 if (len == (sizeof(line) - 1)) 1078 while (line[(len - 1)] != '\n') { 1079 ret = fgetc(file); 1080 if (ret == EOF) 1081 break; 1082 line[(len - 1)] = ret; 1083 } 1084 /* Extract information. */ 1085 if (sscanf(line, 1086 "PCI_SLOT_NAME=" 1087 "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n", 1088 &pci_addr->domain, 1089 &pci_addr->bus, 1090 &pci_addr->devid, 1091 &pci_addr->function) == 4) { 1092 ret = 0; 1093 break; 1094 } 1095 } 1096 fclose(file); 1097 return 0; 1098 } 1099 1100 /** 1101 * Update the link status. 1102 * 1103 * @param priv 1104 * Pointer to private structure. 1105 * 1106 * @return 1107 * Zero if the callback process can be called immediately. 1108 */ 1109 static int 1110 priv_link_status_update(struct priv *priv) 1111 { 1112 struct rte_eth_link *link = &priv->dev->data->dev_link; 1113 1114 mlx5_link_update(priv->dev, 0); 1115 if (((link->link_speed == 0) && link->link_status) || 1116 ((link->link_speed != 0) && !link->link_status)) { 1117 /* 1118 * Inconsistent status. Event likely occurred before the 1119 * kernel netdevice exposes the new status. 1120 */ 1121 if (!priv->pending_alarm) { 1122 priv->pending_alarm = 1; 1123 rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US, 1124 mlx5_dev_link_status_handler, 1125 priv->dev); 1126 } 1127 return 1; 1128 } else if (unlikely(priv->pending_alarm)) { 1129 /* Link interrupt occurred while alarm is already scheduled. */ 1130 priv->pending_alarm = 0; 1131 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, priv->dev); 1132 } 1133 return 0; 1134 } 1135 1136 /** 1137 * Device status handler. 1138 * 1139 * @param priv 1140 * Pointer to private structure. 1141 * @param events 1142 * Pointer to event flags holder. 1143 * 1144 * @return 1145 * Events bitmap of callback process which can be called immediately. 1146 */ 1147 static uint32_t 1148 priv_dev_status_handler(struct priv *priv) 1149 { 1150 struct ibv_async_event event; 1151 uint32_t ret = 0; 1152 1153 /* Read all message and acknowledge them. */ 1154 for (;;) { 1155 if (ibv_get_async_event(priv->ctx, &event)) 1156 break; 1157 if ((event.event_type == IBV_EVENT_PORT_ACTIVE || 1158 event.event_type == IBV_EVENT_PORT_ERR) && 1159 (priv->dev->data->dev_conf.intr_conf.lsc == 1)) 1160 ret |= (1 << RTE_ETH_EVENT_INTR_LSC); 1161 else if (event.event_type == IBV_EVENT_DEVICE_FATAL && 1162 priv->dev->data->dev_conf.intr_conf.rmv == 1) 1163 ret |= (1 << RTE_ETH_EVENT_INTR_RMV); 1164 else 1165 DEBUG("event type %d on port %d not handled", 1166 event.event_type, event.element.port_num); 1167 ibv_ack_async_event(&event); 1168 } 1169 if (ret & (1 << RTE_ETH_EVENT_INTR_LSC)) 1170 if (priv_link_status_update(priv)) 1171 ret &= ~(1 << RTE_ETH_EVENT_INTR_LSC); 1172 return ret; 1173 } 1174 1175 /** 1176 * Handle delayed link status event. 1177 * 1178 * @param arg 1179 * Registered argument. 1180 */ 1181 void 1182 mlx5_dev_link_status_handler(void *arg) 1183 { 1184 struct rte_eth_dev *dev = arg; 1185 struct priv *priv = dev->data->dev_private; 1186 int ret; 1187 1188 priv_lock(priv); 1189 assert(priv->pending_alarm == 1); 1190 priv->pending_alarm = 0; 1191 ret = priv_link_status_update(priv); 1192 priv_unlock(priv); 1193 if (!ret) 1194 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL, 1195 NULL); 1196 } 1197 1198 /** 1199 * Handle interrupts from the NIC. 1200 * 1201 * @param[in] intr_handle 1202 * Interrupt handler. 1203 * @param cb_arg 1204 * Callback argument. 1205 */ 1206 void 1207 mlx5_dev_interrupt_handler(void *cb_arg) 1208 { 1209 struct rte_eth_dev *dev = cb_arg; 1210 struct priv *priv = dev->data->dev_private; 1211 uint32_t events; 1212 1213 priv_lock(priv); 1214 events = priv_dev_status_handler(priv); 1215 priv_unlock(priv); 1216 if (events & (1 << RTE_ETH_EVENT_INTR_LSC)) 1217 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL, 1218 NULL); 1219 if (events & (1 << RTE_ETH_EVENT_INTR_RMV)) 1220 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL, 1221 NULL); 1222 } 1223 1224 /** 1225 * Handle interrupts from the socket. 1226 * 1227 * @param cb_arg 1228 * Callback argument. 1229 */ 1230 static void 1231 mlx5_dev_handler_socket(void *cb_arg) 1232 { 1233 struct rte_eth_dev *dev = cb_arg; 1234 struct priv *priv = dev->data->dev_private; 1235 1236 priv_lock(priv); 1237 priv_socket_handle(priv); 1238 priv_unlock(priv); 1239 } 1240 1241 /** 1242 * Uninstall interrupt handler. 1243 * 1244 * @param priv 1245 * Pointer to private structure. 1246 * @param dev 1247 * Pointer to the rte_eth_dev structure. 1248 */ 1249 void 1250 priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev) 1251 { 1252 if (dev->data->dev_conf.intr_conf.lsc || 1253 dev->data->dev_conf.intr_conf.rmv) 1254 rte_intr_callback_unregister(&priv->intr_handle, 1255 mlx5_dev_interrupt_handler, dev); 1256 if (priv->primary_socket) 1257 rte_intr_callback_unregister(&priv->intr_handle_socket, 1258 mlx5_dev_handler_socket, dev); 1259 if (priv->pending_alarm) 1260 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev); 1261 priv->pending_alarm = 0; 1262 priv->intr_handle.fd = 0; 1263 priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; 1264 priv->intr_handle_socket.fd = 0; 1265 priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN; 1266 } 1267 1268 /** 1269 * Install interrupt handler. 1270 * 1271 * @param priv 1272 * Pointer to private structure. 1273 * @param dev 1274 * Pointer to the rte_eth_dev structure. 1275 */ 1276 void 1277 priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev) 1278 { 1279 int rc, flags; 1280 1281 assert(priv->ctx->async_fd > 0); 1282 flags = fcntl(priv->ctx->async_fd, F_GETFL); 1283 rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK); 1284 if (rc < 0) { 1285 INFO("failed to change file descriptor async event queue"); 1286 dev->data->dev_conf.intr_conf.lsc = 0; 1287 dev->data->dev_conf.intr_conf.rmv = 0; 1288 } 1289 if (dev->data->dev_conf.intr_conf.lsc || 1290 dev->data->dev_conf.intr_conf.rmv) { 1291 priv->intr_handle.fd = priv->ctx->async_fd; 1292 priv->intr_handle.type = RTE_INTR_HANDLE_EXT; 1293 rte_intr_callback_register(&priv->intr_handle, 1294 mlx5_dev_interrupt_handler, dev); 1295 } 1296 1297 rc = priv_socket_init(priv); 1298 if (!rc && priv->primary_socket) { 1299 priv->intr_handle_socket.fd = priv->primary_socket; 1300 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT; 1301 rte_intr_callback_register(&priv->intr_handle_socket, 1302 mlx5_dev_handler_socket, dev); 1303 } 1304 } 1305 1306 /** 1307 * Change the link state (UP / DOWN). 1308 * 1309 * @param priv 1310 * Pointer to private data structure. 1311 * @param dev 1312 * Pointer to rte_eth_dev structure. 1313 * @param up 1314 * Nonzero for link up, otherwise link down. 1315 * 1316 * @return 1317 * 0 on success, errno value on failure. 1318 */ 1319 static int 1320 priv_dev_set_link(struct priv *priv, struct rte_eth_dev *dev, int up) 1321 { 1322 int err; 1323 1324 if (up) { 1325 err = priv_set_flags(priv, ~IFF_UP, IFF_UP); 1326 if (err) 1327 return err; 1328 priv_dev_select_tx_function(priv, dev); 1329 priv_dev_select_rx_function(priv, dev); 1330 } else { 1331 err = priv_set_flags(priv, ~IFF_UP, ~IFF_UP); 1332 if (err) 1333 return err; 1334 dev->rx_pkt_burst = removed_rx_burst; 1335 dev->tx_pkt_burst = removed_tx_burst; 1336 } 1337 return 0; 1338 } 1339 1340 /** 1341 * DPDK callback to bring the link DOWN. 1342 * 1343 * @param dev 1344 * Pointer to Ethernet device structure. 1345 * 1346 * @return 1347 * 0 on success, errno value on failure. 1348 */ 1349 int 1350 mlx5_set_link_down(struct rte_eth_dev *dev) 1351 { 1352 struct priv *priv = dev->data->dev_private; 1353 int err; 1354 1355 priv_lock(priv); 1356 err = priv_dev_set_link(priv, dev, 0); 1357 priv_unlock(priv); 1358 return err; 1359 } 1360 1361 /** 1362 * DPDK callback to bring the link UP. 1363 * 1364 * @param dev 1365 * Pointer to Ethernet device structure. 1366 * 1367 * @return 1368 * 0 on success, errno value on failure. 1369 */ 1370 int 1371 mlx5_set_link_up(struct rte_eth_dev *dev) 1372 { 1373 struct priv *priv = dev->data->dev_private; 1374 int err; 1375 1376 priv_lock(priv); 1377 err = priv_dev_set_link(priv, dev, 1); 1378 priv_unlock(priv); 1379 return err; 1380 } 1381 1382 /** 1383 * Configure the TX function to use. 1384 * 1385 * @param priv 1386 * Pointer to private data structure. 1387 * @param dev 1388 * Pointer to rte_eth_dev structure. 1389 */ 1390 void 1391 priv_dev_select_tx_function(struct priv *priv, struct rte_eth_dev *dev) 1392 { 1393 assert(priv != NULL); 1394 assert(dev != NULL); 1395 dev->tx_pkt_burst = mlx5_tx_burst; 1396 /* Select appropriate TX function. */ 1397 if (priv->mps == MLX5_MPW_ENHANCED) { 1398 if (priv_check_vec_tx_support(priv) > 0) { 1399 if (priv_check_raw_vec_tx_support(priv) > 0) 1400 dev->tx_pkt_burst = mlx5_tx_burst_raw_vec; 1401 else 1402 dev->tx_pkt_burst = mlx5_tx_burst_vec; 1403 DEBUG("selected Enhanced MPW TX vectorized function"); 1404 } else { 1405 dev->tx_pkt_burst = mlx5_tx_burst_empw; 1406 DEBUG("selected Enhanced MPW TX function"); 1407 } 1408 } else if (priv->mps && priv->txq_inline) { 1409 dev->tx_pkt_burst = mlx5_tx_burst_mpw_inline; 1410 DEBUG("selected MPW inline TX function"); 1411 } else if (priv->mps) { 1412 dev->tx_pkt_burst = mlx5_tx_burst_mpw; 1413 DEBUG("selected MPW TX function"); 1414 } 1415 } 1416 1417 /** 1418 * Configure the RX function to use. 1419 * 1420 * @param priv 1421 * Pointer to private data structure. 1422 * @param dev 1423 * Pointer to rte_eth_dev structure. 1424 */ 1425 void 1426 priv_dev_select_rx_function(struct priv *priv, struct rte_eth_dev *dev) 1427 { 1428 assert(priv != NULL); 1429 assert(dev != NULL); 1430 if (priv_check_vec_rx_support(priv) > 0) { 1431 dev->rx_pkt_burst = mlx5_rx_burst_vec; 1432 DEBUG("selected RX vectorized function"); 1433 } else { 1434 dev->rx_pkt_burst = mlx5_rx_burst; 1435 } 1436 } 1437