drivers/net/mlx5/mlx5_ethdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2015 6WIND S.A.
   3  * Copyright 2015 Mellanox.
   4  */
   5
   6 #define _GNU_SOURCE
   7
   8 #include <stddef.h>
   9 #include <assert.h>
  10 #include <inttypes.h>
  11 #include <unistd.h>
  12 #include <stdint.h>
  13 #include <stdio.h>
  14 #include <string.h>
  15 #include <stdlib.h>
  16 #include <errno.h>
  17 #include <dirent.h>
  18 #include <net/if.h>
  19 #include <sys/ioctl.h>
  20 #include <sys/socket.h>
  21 #include <netinet/in.h>
  22 #include <linux/ethtool.h>
  23 #include <linux/sockios.h>
  24 #include <fcntl.h>
  25 #include <stdalign.h>
  26 #include <sys/un.h>
  27
  28 #include <rte_atomic.h>
  29 #include <rte_ethdev_driver.h>
  30 #include <rte_bus_pci.h>
  31 #include <rte_mbuf.h>
  32 #include <rte_common.h>
  33 #include <rte_interrupts.h>
  34 #include <rte_alarm.h>
  35 #include <rte_malloc.h>
  36
  37 #include "mlx5.h"
  38 #include "mlx5_glue.h"
  39 #include "mlx5_rxtx.h"
  40 #include "mlx5_utils.h"
  41
  42 /* Add defines in case the running kernel is not the same as user headers. */
  43 #ifndef ETHTOOL_GLINKSETTINGS
  44 struct ethtool_link_settings {
  45         uint32_t cmd;
  46         uint32_t speed;
  47         uint8_t duplex;
  48         uint8_t port;
  49         uint8_t phy_address;
  50         uint8_t autoneg;
  51         uint8_t mdio_support;
  52         uint8_t eth_to_mdix;
  53         uint8_t eth_tp_mdix_ctrl;
  54         int8_t link_mode_masks_nwords;
  55         uint32_t reserved[8];
  56         uint32_t link_mode_masks[];
  57 };
  58
  59 #define ETHTOOL_GLINKSETTINGS 0x0000004c
  60 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5
  61 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6
  62 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17
  63 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18
  64 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19
  65 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20
  66 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21
  67 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22
  68 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23
  69 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24
  70 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25
  71 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26
  72 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27
  73 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28
  74 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29
  75 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30
  76 #endif
  77 #ifndef HAVE_ETHTOOL_LINK_MODE_25G
  78 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31
  79 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32
  80 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33
  81 #endif
  82 #ifndef HAVE_ETHTOOL_LINK_MODE_50G
  83 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34
  84 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35
  85 #endif
  86 #ifndef HAVE_ETHTOOL_LINK_MODE_100G
  87 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36
  88 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37
  89 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38
  90 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39
  91 #endif
  92
  93 /**
  94  * Get interface name from private structure.
  95  *
  96  * @param[in] dev
  97  *   Pointer to Ethernet device.
  98  * @param[out] ifname
  99  *   Interface name output buffer.
 100  *
 101  * @return
 102  *   0 on success, a negative errno value otherwise and rte_errno is set.
 103  */
 104 int
 105 mlx5_get_ifname(const struct rte_eth_dev *dev, char (*ifname)[IF_NAMESIZE])
 106 {
 107         struct priv *priv = dev->data->dev_private;
 108         DIR *dir;
 109         struct dirent *dent;
 110         unsigned int dev_type = 0;
 111         unsigned int dev_port_prev = ~0u;
 112         char match[IF_NAMESIZE] = "";
 113
 114         {
 115                 MKSTR(path, "%s/device/net", priv->ibdev_path);
 116
 117                 dir = opendir(path);
 118                 if (dir == NULL) {
 119                         rte_errno = errno;
 120                         return -rte_errno;
 121                 }
 122         }
 123         while ((dent = readdir(dir)) != NULL) {
 124                 char *name = dent->d_name;
 125                 FILE *file;
 126                 unsigned int dev_port;
 127                 int r;
 128
 129                 if ((name[0] == '.') &&
 130                     ((name[1] == '\0') ||
 131                      ((name[1] == '.') && (name[2] == '\0'))))
 132                         continue;
 133
 134                 MKSTR(path, "%s/device/net/%s/%s",
 135                       priv->ibdev_path, name,
 136                       (dev_type ? "dev_id" : "dev_port"));
 137
 138                 file = fopen(path, "rb");
 139                 if (file == NULL) {
 140                         if (errno != ENOENT)
 141                                 continue;
 142                         /*
 143                          * Switch to dev_id when dev_port does not exist as
 144                          * is the case with Linux kernel versions < 3.15.
 145                          */
 146 try_dev_id:
 147                         match[0] = '\0';
 148                         if (dev_type)
 149                                 break;
 150                         dev_type = 1;
 151                         dev_port_prev = ~0u;
 152                         rewinddir(dir);
 153                         continue;
 154                 }
 155                 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
 156                 fclose(file);
 157                 if (r != 1)
 158                         continue;
 159                 /*
 160                  * Switch to dev_id when dev_port returns the same value for
 161                  * all ports. May happen when using a MOFED release older than
 162                  * 3.0 with a Linux kernel >= 3.15.
 163                  */
 164                 if (dev_port == dev_port_prev)
 165                         goto try_dev_id;
 166                 dev_port_prev = dev_port;
 167                 if (dev_port == (priv->port - 1u))
 168                         snprintf(match, sizeof(match), "%s", name);
 169         }
 170         closedir(dir);
 171         if (match[0] == '\0') {
 172                 rte_errno = ENOENT;
 173                 return -rte_errno;
 174         }
 175         strncpy(*ifname, match, sizeof(*ifname));
 176         return 0;
 177 }
 178
 179 /**
 180  * Perform ifreq ioctl() on associated Ethernet device.
 181  *
 182  * @param[in] dev
 183  *   Pointer to Ethernet device.
 184  * @param req
 185  *   Request number to pass to ioctl().
 186  * @param[out] ifr
 187  *   Interface request structure output buffer.
 188  *
 189  * @return
 190  *   0 on success, a negative errno value otherwise and rte_errno is set.
 191  */
 192 int
 193 mlx5_ifreq(const struct rte_eth_dev *dev, int req, struct ifreq *ifr)
 194 {
 195         int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
 196         int ret = 0;
 197
 198         if (sock == -1) {
 199                 rte_errno = errno;
 200                 return -rte_errno;
 201         }
 202         ret = mlx5_get_ifname(dev, &ifr->ifr_name);
 203         if (ret)
 204                 goto error;
 205         ret = ioctl(sock, req, ifr);
 206         if (ret == -1) {
 207                 rte_errno = errno;
 208                 goto error;
 209         }
 210         close(sock);
 211         return 0;
 212 error:
 213         close(sock);
 214         return -rte_errno;
 215 }
 216
 217 /**
 218  * Get device MTU.
 219  *
 220  * @param dev
 221  *   Pointer to Ethernet device.
 222  * @param[out] mtu
 223  *   MTU value output buffer.
 224  *
 225  * @return
 226  *   0 on success, a negative errno value otherwise and rte_errno is set.
 227  */
 228 int
 229 mlx5_get_mtu(struct rte_eth_dev *dev, uint16_t *mtu)
 230 {
 231         struct ifreq request;
 232         int ret = mlx5_ifreq(dev, SIOCGIFMTU, &request);
 233
 234         if (ret)
 235                 return ret;
 236         *mtu = request.ifr_mtu;
 237         return 0;
 238 }
 239
 240 /**
 241  * Set device MTU.
 242  *
 243  * @param dev
 244  *   Pointer to Ethernet device.
 245  * @param mtu
 246  *   MTU value to set.
 247  *
 248  * @return
 249  *   0 on success, a negative errno value otherwise and rte_errno is set.
 250  */
 251 static int
 252 mlx5_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 253 {
 254         struct ifreq request = { .ifr_mtu = mtu, };
 255
 256         return mlx5_ifreq(dev, SIOCSIFMTU, &request);
 257 }
 258
 259 /**
 260  * Set device flags.
 261  *
 262  * @param dev
 263  *   Pointer to Ethernet device.
 264  * @param keep
 265  *   Bitmask for flags that must remain untouched.
 266  * @param flags
 267  *   Bitmask for flags to modify.
 268  *
 269  * @return
 270  *   0 on success, a negative errno value otherwise and rte_errno is set.
 271  */
 272 int
 273 mlx5_set_flags(struct rte_eth_dev *dev, unsigned int keep, unsigned int flags)
 274 {
 275         struct ifreq request;
 276         int ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &request);
 277
 278         if (ret)
 279                 return ret;
 280         request.ifr_flags &= keep;
 281         request.ifr_flags |= flags & ~keep;
 282         return mlx5_ifreq(dev, SIOCSIFFLAGS, &request);
 283 }
 284
 285 /**
 286  * DPDK callback for Ethernet device configuration.
 287  *
 288  * @param dev
 289  *   Pointer to Ethernet device structure.
 290  *
 291  * @return
 292  *   0 on success, a negative errno value otherwise and rte_errno is set.
 293  */
 294 int
 295 mlx5_dev_configure(struct rte_eth_dev *dev)
 296 {
 297         struct priv *priv = dev->data->dev_private;
 298         unsigned int rxqs_n = dev->data->nb_rx_queues;
 299         unsigned int txqs_n = dev->data->nb_tx_queues;
 300         unsigned int i;
 301         unsigned int j;
 302         unsigned int reta_idx_n;
 303         const uint8_t use_app_rss_key =
 304                 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
 305         uint64_t supp_tx_offloads = mlx5_get_tx_port_offloads(dev);
 306         uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
 307         uint64_t supp_rx_offloads =
 308                 (mlx5_get_rx_port_offloads() |
 309                  mlx5_get_rx_queue_offloads(dev));
 310         uint64_t rx_offloads = dev->data->dev_conf.rxmode.offloads;
 311         int ret = 0;
 312
 313         if ((tx_offloads & supp_tx_offloads) != tx_offloads) {
 314                 DRV_LOG(ERR,
 315                         "port %u some Tx offloads are not supported requested"
 316                         " 0x%" PRIx64 " supported 0x%" PRIx64,
 317                         dev->data->port_id, tx_offloads, supp_tx_offloads);
 318                 rte_errno = ENOTSUP;
 319                 return -rte_errno;
 320         }
 321         if ((rx_offloads & supp_rx_offloads) != rx_offloads) {
 322                 DRV_LOG(ERR,
 323                         "port %u some Rx offloads are not supported requested"
 324                         " 0x%" PRIx64 " supported 0x%" PRIx64,
 325                         dev->data->port_id, rx_offloads, supp_rx_offloads);
 326                 rte_errno = ENOTSUP;
 327                 return -rte_errno;
 328         }
 329         if (use_app_rss_key &&
 330             (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
 331              rss_hash_default_key_len)) {
 332                 /* MLX5 RSS only support 40bytes key. */
 333                 rte_errno = EINVAL;
 334                 return -rte_errno;
 335         }
 336         priv->rss_conf.rss_key =
 337                 rte_realloc(priv->rss_conf.rss_key,
 338                             rss_hash_default_key_len, 0);
 339         if (!priv->rss_conf.rss_key) {
 340                 DRV_LOG(ERR, "port %u cannot allocate RSS hash key memory (%u)",
 341                         dev->data->port_id, rxqs_n);
 342                 rte_errno = ENOMEM;
 343                 return -rte_errno;
 344         }
 345         memcpy(priv->rss_conf.rss_key,
 346                use_app_rss_key ?
 347                dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
 348                rss_hash_default_key,
 349                rss_hash_default_key_len);
 350         priv->rss_conf.rss_key_len = rss_hash_default_key_len;
 351         priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
 352         priv->rxqs = (void *)dev->data->rx_queues;
 353         priv->txqs = (void *)dev->data->tx_queues;
 354         if (txqs_n != priv->txqs_n) {
 355                 DRV_LOG(INFO, "port %u Tx queues number update: %u -> %u",
 356                         dev->data->port_id, priv->txqs_n, txqs_n);
 357                 priv->txqs_n = txqs_n;
 358         }
 359         if (rxqs_n > priv->config.ind_table_max_size) {
 360                 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)",
 361                         dev->data->port_id, rxqs_n);
 362                 rte_errno = EINVAL;
 363                 return -rte_errno;
 364         }
 365         if (rxqs_n == priv->rxqs_n)
 366                 return 0;
 367         DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u",
 368                 dev->data->port_id, priv->rxqs_n, rxqs_n);
 369         priv->rxqs_n = rxqs_n;
 370         /* If the requested number of RX queues is not a power of two, use the
 371          * maximum indirection table size for better balancing.
 372          * The result is always rounded to the next power of two. */
 373         reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ?
 374                                      priv->config.ind_table_max_size :
 375                                      rxqs_n));
 376         ret = mlx5_rss_reta_index_resize(dev, reta_idx_n);
 377         if (ret)
 378                 return ret;
 379         /* When the number of RX queues is not a power of two, the remaining
 380          * table entries are padded with reused WQs and hashes are not spread
 381          * uniformly. */
 382         for (i = 0, j = 0; (i != reta_idx_n); ++i) {
 383                 (*priv->reta_idx)[i] = j;
 384                 if (++j == rxqs_n)
 385                         j = 0;
 386         }
 387         return 0;
 388 }
 389
 390 /**
 391  * DPDK callback to get information about the device.
 392  *
 393  * @param dev
 394  *   Pointer to Ethernet device structure.
 395  * @param[out] info
 396  *   Info structure output buffer.
 397  */
 398 void
 399 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 400 {
 401         struct priv *priv = dev->data->dev_private;
 402         struct mlx5_dev_config *config = &priv->config;
 403         unsigned int max;
 404         char ifname[IF_NAMESIZE];
 405
 406         info->pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 407         /* FIXME: we should ask the device for these values. */
 408         info->min_rx_bufsize = 32;
 409         info->max_rx_pktlen = 65536;
 410         /*
 411          * Since we need one CQ per QP, the limit is the minimum number
 412          * between the two values.
 413          */
 414         max = RTE_MIN(priv->device_attr.orig_attr.max_cq,
 415                       priv->device_attr.orig_attr.max_qp);
 416         /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
 417         if (max >= 65535)
 418                 max = 65535;
 419         info->max_rx_queues = max;
 420         info->max_tx_queues = max;
 421         info->max_mac_addrs = RTE_DIM(priv->mac);
 422         info->rx_queue_offload_capa = mlx5_get_rx_queue_offloads(dev);
 423         info->rx_offload_capa = (mlx5_get_rx_port_offloads() |
 424                                  info->rx_queue_offload_capa);
 425         info->tx_offload_capa = mlx5_get_tx_port_offloads(dev);
 426         if (mlx5_get_ifname(dev, &ifname) == 0)
 427                 info->if_index = if_nametoindex(ifname);
 428         info->reta_size = priv->reta_idx_n ?
 429                 priv->reta_idx_n : config->ind_table_max_size;
 430         info->hash_key_size = priv->rss_conf.rss_key_len;
 431         info->speed_capa = priv->link_speed_capa;
 432         info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK;
 433 }
 434
 435 /**
 436  * Get supported packet types.
 437  *
 438  * @param dev
 439  *   Pointer to Ethernet device structure.
 440  *
 441  * @return
 442  *   A pointer to the supported Packet types array.
 443  */
 444 const uint32_t *
 445 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 446 {
 447         static const uint32_t ptypes[] = {
 448                 /* refers to rxq_cq_to_pkt_type() */
 449                 RTE_PTYPE_L2_ETHER,
 450                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 451                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 452                 RTE_PTYPE_L4_NONFRAG,
 453                 RTE_PTYPE_L4_FRAG,
 454                 RTE_PTYPE_L4_TCP,
 455                 RTE_PTYPE_L4_UDP,
 456                 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
 457                 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
 458                 RTE_PTYPE_INNER_L4_NONFRAG,
 459                 RTE_PTYPE_INNER_L4_FRAG,
 460                 RTE_PTYPE_INNER_L4_TCP,
 461                 RTE_PTYPE_INNER_L4_UDP,
 462                 RTE_PTYPE_UNKNOWN
 463         };
 464
 465         if (dev->rx_pkt_burst == mlx5_rx_burst ||
 466             dev->rx_pkt_burst == mlx5_rx_burst_vec)
 467                 return ptypes;
 468         return NULL;
 469 }
 470
 471 /**
 472  * DPDK callback to retrieve physical link information.
 473  *
 474  * @param dev
 475  *   Pointer to Ethernet device structure.
 476  *
 477  * @return
 478  *   0 on success, a negative errno value otherwise and rte_errno is set.
 479  */
 480 static int
 481 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev)
 482 {
 483         struct priv *priv = dev->data->dev_private;
 484         struct ethtool_cmd edata = {
 485                 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
 486         };
 487         struct ifreq ifr;
 488         struct rte_eth_link dev_link;
 489         int link_speed = 0;
 490         int ret;
 491
 492         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
 493         if (ret) {
 494                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
 495                         dev->data->port_id, strerror(rte_errno));
 496                 return ret;
 497         }
 498         memset(&dev_link, 0, sizeof(dev_link));
 499         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 500                                 (ifr.ifr_flags & IFF_RUNNING));
 501         ifr.ifr_data = (void *)&edata;
 502         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 503         if (ret) {
 504                 DRV_LOG(WARNING,
 505                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
 506                         dev->data->port_id, strerror(rte_errno));
 507                 return ret;
 508         }
 509         link_speed = ethtool_cmd_speed(&edata);
 510         if (link_speed == -1)
 511                 dev_link.link_speed = 0;
 512         else
 513                 dev_link.link_speed = link_speed;
 514         priv->link_speed_capa = 0;
 515         if (edata.supported & SUPPORTED_Autoneg)
 516                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 517         if (edata.supported & (SUPPORTED_1000baseT_Full |
 518                                SUPPORTED_1000baseKX_Full))
 519                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 520         if (edata.supported & SUPPORTED_10000baseKR_Full)
 521                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 522         if (edata.supported & (SUPPORTED_40000baseKR4_Full |
 523                                SUPPORTED_40000baseCR4_Full |
 524                                SUPPORTED_40000baseSR4_Full |
 525                                SUPPORTED_40000baseLR4_Full))
 526                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 527         dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
 528                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 529         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 530                         ETH_LINK_SPEED_FIXED);
 531         if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
 532                 /* Link status changed. */
 533                 dev->data->dev_link = dev_link;
 534                 return 0;
 535         }
 536         /* Link status is still the same. */
 537         rte_errno = EAGAIN;
 538         return -rte_errno;
 539 }
 540
 541 /**
 542  * Retrieve physical link information (unlocked version using new ioctl).
 543  *
 544  * @param dev
 545  *   Pointer to Ethernet device structure.
 546  *
 547  * @return
 548  *   0 on success, a negative errno value otherwise and rte_errno is set.
 549  */
 550 static int
 551 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev)
 552 {
 553         struct priv *priv = dev->data->dev_private;
 554         struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
 555         struct ifreq ifr;
 556         struct rte_eth_link dev_link;
 557         uint64_t sc;
 558         int ret;
 559
 560         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
 561         if (ret) {
 562                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
 563                         dev->data->port_id, strerror(rte_errno));
 564                 return ret;
 565         }
 566         memset(&dev_link, 0, sizeof(dev_link));
 567         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 568                                 (ifr.ifr_flags & IFF_RUNNING));
 569         ifr.ifr_data = (void *)&gcmd;
 570         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 571         if (ret) {
 572                 DRV_LOG(DEBUG,
 573                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS)"
 574                         " failed: %s",
 575                         dev->data->port_id, strerror(rte_errno));
 576                 return ret;
 577         }
 578         gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
 579
 580         alignas(struct ethtool_link_settings)
 581         uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
 582                      sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
 583         struct ethtool_link_settings *ecmd = (void *)data;
 584
 585         *ecmd = gcmd;
 586         ifr.ifr_data = (void *)ecmd;
 587         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 588         if (ret) {
 589                 DRV_LOG(DEBUG,
 590                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS)"
 591                         " failed: %s",
 592                         dev->data->port_id, strerror(rte_errno));
 593                 return ret;
 594         }
 595         dev_link.link_speed = ecmd->speed;
 596         sc = ecmd->link_mode_masks[0] |
 597                 ((uint64_t)ecmd->link_mode_masks[1] << 32);
 598         priv->link_speed_capa = 0;
 599         if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
 600                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 601         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
 602                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
 603                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 604         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
 605                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
 606                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
 607                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 608         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
 609                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
 610                 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
 611         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
 612                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
 613                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
 614                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
 615                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 616         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
 617                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
 618                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
 619                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
 620                 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
 621         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
 622                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
 623                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
 624                 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
 625         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
 626                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
 627                 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
 628         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
 629                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
 630                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
 631                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
 632                 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
 633         dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
 634                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 635         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 636                                   ETH_LINK_SPEED_FIXED);
 637         if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
 638                 /* Link status changed. */
 639                 dev->data->dev_link = dev_link;
 640                 return 0;
 641         }
 642         /* Link status is still the same. */
 643         rte_errno = EAGAIN;
 644         return -rte_errno;
 645 }
 646
 647 /**
 648  * Enable receiving and transmitting traffic.
 649  *
 650  * @param dev
 651  *   Pointer to Ethernet device.
 652  */
 653 static void
 654 mlx5_link_start(struct rte_eth_dev *dev)
 655 {
 656         struct priv *priv = dev->data->dev_private;
 657         int ret;
 658
 659         dev->tx_pkt_burst = mlx5_select_tx_function(dev);
 660         dev->rx_pkt_burst = mlx5_select_rx_function(dev);
 661         ret = mlx5_traffic_enable(dev);
 662         if (ret) {
 663                 DRV_LOG(ERR,
 664                         "port %u error occurred while configuring control"
 665                         " flows: %s",
 666                         dev->data->port_id, strerror(rte_errno));
 667                 return;
 668         }
 669         ret = mlx5_flow_start(dev, &priv->flows);
 670         if (ret)
 671                 DRV_LOG(ERR,
 672                         "port %u error occurred while configuring flows: %s",
 673                         dev->data->port_id, strerror(rte_errno));
 674 }
 675
 676 /**
 677  * Disable receiving and transmitting traffic.
 678  *
 679  * @param dev
 680  *   Pointer to Ethernet device.
 681  */
 682 static void
 683 mlx5_link_stop(struct rte_eth_dev *dev)
 684 {
 685         struct priv *priv = dev->data->dev_private;
 686
 687         mlx5_flow_stop(dev, &priv->flows);
 688         mlx5_traffic_disable(dev);
 689         dev->rx_pkt_burst = removed_rx_burst;
 690         dev->tx_pkt_burst = removed_tx_burst;
 691 }
 692
 693 /**
 694  * Querying the link status till it changes to the desired state.
 695  * Number of query attempts is bounded by MLX5_MAX_LINK_QUERY_ATTEMPTS.
 696  *
 697  * @param dev
 698  *   Pointer to Ethernet device.
 699  * @param status
 700  *   Link desired status.
 701  *
 702  * @return
 703  *   0 on success, a negative errno value otherwise and rte_errno is set.
 704  */
 705 int
 706 mlx5_force_link_status_change(struct rte_eth_dev *dev, int status)
 707 {
 708         int try = 0;
 709
 710         while (try < MLX5_MAX_LINK_QUERY_ATTEMPTS) {
 711                 mlx5_link_update(dev, 0);
 712                 if (dev->data->dev_link.link_status == status)
 713                         return 0;
 714                 try++;
 715                 sleep(1);
 716         }
 717         rte_errno = EAGAIN;
 718         return -rte_errno;
 719 }
 720
 721 /**
 722  * DPDK callback to retrieve physical link information.
 723  *
 724  * @param dev
 725  *   Pointer to Ethernet device structure.
 726  * @param wait_to_complete
 727  *   Wait for request completion (ignored).
 728  *
 729  * @return
 730  *   0 on success, a negative errno value otherwise and rte_errno is set.
 731  */
 732 int
 733 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete __rte_unused)
 734 {
 735         int ret;
 736         struct rte_eth_link dev_link = dev->data->dev_link;
 737
 738         ret = mlx5_link_update_unlocked_gset(dev);
 739         if (ret) {
 740                 ret = mlx5_link_update_unlocked_gs(dev);
 741                 if (ret)
 742                         return ret;
 743         }
 744         /* If lsc interrupt is disabled, should always be ready for traffic. */
 745         if (!dev->data->dev_conf.intr_conf.lsc) {
 746                 mlx5_link_start(dev);
 747                 return 0;
 748         }
 749         /* Re-select burst callbacks only if link status has been changed. */
 750         if (!ret && dev_link.link_status != dev->data->dev_link.link_status) {
 751                 if (dev->data->dev_link.link_status == ETH_LINK_UP)
 752                         mlx5_link_start(dev);
 753                 else
 754                         mlx5_link_stop(dev);
 755         }
 756         return 0;
 757 }
 758
 759 /**
 760  * DPDK callback to change the MTU.
 761  *
 762  * @param dev
 763  *   Pointer to Ethernet device structure.
 764  * @param in_mtu
 765  *   New MTU.
 766  *
 767  * @return
 768  *   0 on success, a negative errno value otherwise and rte_errno is set.
 769  */
 770 int
 771 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 772 {
 773         struct priv *priv = dev->data->dev_private;
 774         uint16_t kern_mtu = 0;
 775         int ret;
 776
 777         ret = mlx5_get_mtu(dev, &kern_mtu);
 778         if (ret)
 779                 return ret;
 780         /* Set kernel interface MTU first. */
 781         ret = mlx5_set_mtu(dev, mtu);
 782         if (ret)
 783                 return ret;
 784         ret = mlx5_get_mtu(dev, &kern_mtu);
 785         if (ret)
 786                 return ret;
 787         if (kern_mtu == mtu) {
 788                 priv->mtu = mtu;
 789                 DRV_LOG(DEBUG, "port %u adapter MTU set to %u",
 790                         dev->data->port_id, mtu);
 791                 return 0;
 792         }
 793         rte_errno = EAGAIN;
 794         return -rte_errno;
 795 }
 796
 797 /**
 798  * DPDK callback to get flow control status.
 799  *
 800  * @param dev
 801  *   Pointer to Ethernet device structure.
 802  * @param[out] fc_conf
 803  *   Flow control output buffer.
 804  *
 805  * @return
 806  *   0 on success, a negative errno value otherwise and rte_errno is set.
 807  */
 808 int
 809 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 810 {
 811         struct ifreq ifr;
 812         struct ethtool_pauseparam ethpause = {
 813                 .cmd = ETHTOOL_GPAUSEPARAM
 814         };
 815         int ret;
 816
 817         ifr.ifr_data = (void *)&ethpause;
 818         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 819         if (ret) {
 820                 DRV_LOG(WARNING,
 821                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM) failed:"
 822                         " %s",
 823                         dev->data->port_id, strerror(rte_errno));
 824                 return ret;
 825         }
 826         fc_conf->autoneg = ethpause.autoneg;
 827         if (ethpause.rx_pause && ethpause.tx_pause)
 828                 fc_conf->mode = RTE_FC_FULL;
 829         else if (ethpause.rx_pause)
 830                 fc_conf->mode = RTE_FC_RX_PAUSE;
 831         else if (ethpause.tx_pause)
 832                 fc_conf->mode = RTE_FC_TX_PAUSE;
 833         else
 834                 fc_conf->mode = RTE_FC_NONE;
 835         return 0;
 836 }
 837
 838 /**
 839  * DPDK callback to modify flow control parameters.
 840  *
 841  * @param dev
 842  *   Pointer to Ethernet device structure.
 843  * @param[in] fc_conf
 844  *   Flow control parameters.
 845  *
 846  * @return
 847  *   0 on success, a negative errno value otherwise and rte_errno is set.
 848  */
 849 int
 850 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 851 {
 852         struct ifreq ifr;
 853         struct ethtool_pauseparam ethpause = {
 854                 .cmd = ETHTOOL_SPAUSEPARAM
 855         };
 856         int ret;
 857
 858         ifr.ifr_data = (void *)&ethpause;
 859         ethpause.autoneg = fc_conf->autoneg;
 860         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 861             (fc_conf->mode & RTE_FC_RX_PAUSE))
 862                 ethpause.rx_pause = 1;
 863         else
 864                 ethpause.rx_pause = 0;
 865
 866         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 867             (fc_conf->mode & RTE_FC_TX_PAUSE))
 868                 ethpause.tx_pause = 1;
 869         else
 870                 ethpause.tx_pause = 0;
 871         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 872         if (ret) {
 873                 DRV_LOG(WARNING,
 874                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
 875                         " failed: %s",
 876                         dev->data->port_id, strerror(rte_errno));
 877                 return ret;
 878         }
 879         return 0;
 880 }
 881
 882 /**
 883  * Get PCI information from struct ibv_device.
 884  *
 885  * @param device
 886  *   Pointer to Ethernet device structure.
 887  * @param[out] pci_addr
 888  *   PCI bus address output buffer.
 889  *
 890  * @return
 891  *   0 on success, a negative errno value otherwise and rte_errno is set.
 892  */
 893 int
 894 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
 895                             struct rte_pci_addr *pci_addr)
 896 {
 897         FILE *file;
 898         char line[32];
 899         MKSTR(path, "%s/device/uevent", device->ibdev_path);
 900
 901         file = fopen(path, "rb");
 902         if (file == NULL) {
 903                 rte_errno = errno;
 904                 return -rte_errno;
 905         }
 906         while (fgets(line, sizeof(line), file) == line) {
 907                 size_t len = strlen(line);
 908                 int ret;
 909
 910                 /* Truncate long lines. */
 911                 if (len == (sizeof(line) - 1))
 912                         while (line[(len - 1)] != '\n') {
 913                                 ret = fgetc(file);
 914                                 if (ret == EOF)
 915                                         break;
 916                                 line[(len - 1)] = ret;
 917                         }
 918                 /* Extract information. */
 919                 if (sscanf(line,
 920                            "PCI_SLOT_NAME="
 921                            "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
 922                            &pci_addr->domain,
 923                            &pci_addr->bus,
 924                            &pci_addr->devid,
 925                            &pci_addr->function) == 4) {
 926                         ret = 0;
 927                         break;
 928                 }
 929         }
 930         fclose(file);
 931         return 0;
 932 }
 933
 934 /**
 935  * Update the link status.
 936  *
 937  * @param dev
 938  *   Pointer to Ethernet device.
 939  *
 940  * @return
 941  *   Zero if the callback process can be called immediately, negative errno
 942  *   value otherwise and rte_errno is set.
 943  */
 944 static int
 945 mlx5_link_status_update(struct rte_eth_dev *dev)
 946 {
 947         struct priv *priv = dev->data->dev_private;
 948         struct rte_eth_link *link = &dev->data->dev_link;
 949         int ret;
 950
 951         ret = mlx5_link_update(dev, 0);
 952         if (ret)
 953                 return ret;
 954         if (((link->link_speed == 0) && link->link_status) ||
 955                 ((link->link_speed != 0) && !link->link_status)) {
 956                 /*
 957                  * Inconsistent status. Event likely occurred before the
 958                  * kernel netdevice exposes the new status.
 959                  */
 960                 if (!priv->pending_alarm) {
 961                         priv->pending_alarm = 1;
 962                         rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US,
 963                                           mlx5_dev_link_status_handler,
 964                                           priv->dev);
 965                 }
 966                 return 1;
 967         } else if (unlikely(priv->pending_alarm)) {
 968                 /* Link interrupt occurred while alarm is already scheduled. */
 969                 priv->pending_alarm = 0;
 970                 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, priv->dev);
 971         }
 972         return 0;
 973 }
 974
 975 /**
 976  * Device status handler.
 977  *
 978  * @param dev
 979  *   Pointer to Ethernet device.
 980  * @param events
 981  *   Pointer to event flags holder.
 982  *
 983  * @return
 984  *   Events bitmap of callback process which can be called immediately.
 985  */
 986 static uint32_t
 987 mlx5_dev_status_handler(struct rte_eth_dev *dev)
 988 {
 989         struct priv *priv = dev->data->dev_private;
 990         struct ibv_async_event event;
 991         uint32_t ret = 0;
 992
 993         /* Read all message and acknowledge them. */
 994         for (;;) {
 995                 if (mlx5_glue->get_async_event(priv->ctx, &event))
 996                         break;
 997                 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
 998                         event.event_type == IBV_EVENT_PORT_ERR) &&
 999                         (dev->data->dev_conf.intr_conf.lsc == 1))
1000                         ret |= (1 << RTE_ETH_EVENT_INTR_LSC);
1001                 else if (event.event_type == IBV_EVENT_DEVICE_FATAL &&
1002                         dev->data->dev_conf.intr_conf.rmv == 1)
1003                         ret |= (1 << RTE_ETH_EVENT_INTR_RMV);
1004                 else
1005                         DRV_LOG(DEBUG,
1006                                 "port %u event type %d on not handled",
1007                                 dev->data->port_id, event.event_type);
1008                 mlx5_glue->ack_async_event(&event);
1009         }
1010         if (ret & (1 << RTE_ETH_EVENT_INTR_LSC))
1011                 if (mlx5_link_status_update(dev))
1012                         ret &= ~(1 << RTE_ETH_EVENT_INTR_LSC);
1013         return ret;
1014 }
1015
1016 /**
1017  * Handle delayed link status event.
1018  *
1019  * @param arg
1020  *   Registered argument.
1021  */
1022 void
1023 mlx5_dev_link_status_handler(void *arg)
1024 {
1025         struct rte_eth_dev *dev = arg;
1026         struct priv *priv = dev->data->dev_private;
1027         int ret;
1028
1029         priv->pending_alarm = 0;
1030         ret = mlx5_link_status_update(dev);
1031         if (!ret)
1032                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1033 }
1034
1035 /**
1036  * Handle interrupts from the NIC.
1037  *
1038  * @param[in] intr_handle
1039  *   Interrupt handler.
1040  * @param cb_arg
1041  *   Callback argument.
1042  */
1043 void
1044 mlx5_dev_interrupt_handler(void *cb_arg)
1045 {
1046         struct rte_eth_dev *dev = cb_arg;
1047         uint32_t events;
1048
1049         events = mlx5_dev_status_handler(dev);
1050         if (events & (1 << RTE_ETH_EVENT_INTR_LSC))
1051                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1052         if (events & (1 << RTE_ETH_EVENT_INTR_RMV))
1053                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL);
1054 }
1055
1056 /**
1057  * Handle interrupts from the socket.
1058  *
1059  * @param cb_arg
1060  *   Callback argument.
1061  */
1062 static void
1063 mlx5_dev_handler_socket(void *cb_arg)
1064 {
1065         struct rte_eth_dev *dev = cb_arg;
1066
1067         mlx5_socket_handle(dev);
1068 }
1069
1070 /**
1071  * Uninstall interrupt handler.
1072  *
1073  * @param dev
1074  *   Pointer to Ethernet device.
1075  */
1076 void
1077 mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev)
1078 {
1079         struct priv *priv = dev->data->dev_private;
1080
1081         if (dev->data->dev_conf.intr_conf.lsc ||
1082             dev->data->dev_conf.intr_conf.rmv)
1083                 rte_intr_callback_unregister(&priv->intr_handle,
1084                                              mlx5_dev_interrupt_handler, dev);
1085         if (priv->primary_socket)
1086                 rte_intr_callback_unregister(&priv->intr_handle_socket,
1087                                              mlx5_dev_handler_socket, dev);
1088         if (priv->pending_alarm) {
1089                 priv->pending_alarm = 0;
1090                 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev);
1091         }
1092         priv->intr_handle.fd = 0;
1093         priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1094         priv->intr_handle_socket.fd = 0;
1095         priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN;
1096 }
1097
1098 /**
1099  * Install interrupt handler.
1100  *
1101  * @param dev
1102  *   Pointer to Ethernet device.
1103  */
1104 void
1105 mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev)
1106 {
1107         struct priv *priv = dev->data->dev_private;
1108         int ret;
1109         int flags;
1110
1111         assert(priv->ctx->async_fd > 0);
1112         flags = fcntl(priv->ctx->async_fd, F_GETFL);
1113         ret = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1114         if (ret) {
1115                 DRV_LOG(INFO,
1116                         "port %u failed to change file descriptor async event"
1117                         " queue",
1118                         dev->data->port_id);
1119                 dev->data->dev_conf.intr_conf.lsc = 0;
1120                 dev->data->dev_conf.intr_conf.rmv = 0;
1121         }
1122         if (dev->data->dev_conf.intr_conf.lsc ||
1123             dev->data->dev_conf.intr_conf.rmv) {
1124                 priv->intr_handle.fd = priv->ctx->async_fd;
1125                 priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
1126                 rte_intr_callback_register(&priv->intr_handle,
1127                                            mlx5_dev_interrupt_handler, dev);
1128         }
1129         ret = mlx5_socket_init(dev);
1130         if (ret)
1131                 DRV_LOG(ERR, "port %u cannot initialise socket: %s",
1132                         dev->data->port_id, strerror(rte_errno));
1133         else if (priv->primary_socket) {
1134                 priv->intr_handle_socket.fd = priv->primary_socket;
1135                 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT;
1136                 rte_intr_callback_register(&priv->intr_handle_socket,
1137                                            mlx5_dev_handler_socket, dev);
1138         }
1139 }
1140
1141 /**
1142  * DPDK callback to bring the link DOWN.
1143  *
1144  * @param dev
1145  *   Pointer to Ethernet device structure.
1146  *
1147  * @return
1148  *   0 on success, a negative errno value otherwise and rte_errno is set.
1149  */
1150 int
1151 mlx5_set_link_down(struct rte_eth_dev *dev)
1152 {
1153         return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP);
1154 }
1155
1156 /**
1157  * DPDK callback to bring the link UP.
1158  *
1159  * @param dev
1160  *   Pointer to Ethernet device structure.
1161  *
1162  * @return
1163  *   0 on success, a negative errno value otherwise and rte_errno is set.
1164  */
1165 int
1166 mlx5_set_link_up(struct rte_eth_dev *dev)
1167 {
1168         return mlx5_set_flags(dev, ~IFF_UP, IFF_UP);
1169 }
1170
1171 /**
1172  * Configure the TX function to use.
1173  *
1174  * @param dev
1175  *   Pointer to private data structure.
1176  *
1177  * @return
1178  *   Pointer to selected Tx burst function.
1179  */
1180 eth_tx_burst_t
1181 mlx5_select_tx_function(struct rte_eth_dev *dev)
1182 {
1183         struct priv *priv = dev->data->dev_private;
1184         eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst;
1185         struct mlx5_dev_config *config = &priv->config;
1186         uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
1187         int tso = !!(tx_offloads & (DEV_TX_OFFLOAD_TCP_TSO |
1188                                     DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
1189                                     DEV_TX_OFFLOAD_GRE_TNL_TSO));
1190         int vlan_insert = !!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT);
1191
1192         assert(priv != NULL);
1193         /* Select appropriate TX function. */
1194         if (vlan_insert || tso)
1195                 return tx_pkt_burst;
1196         if (config->mps == MLX5_MPW_ENHANCED) {
1197                 if (mlx5_check_vec_tx_support(dev) > 0) {
1198                         if (mlx5_check_raw_vec_tx_support(dev) > 0)
1199                                 tx_pkt_burst = mlx5_tx_burst_raw_vec;
1200                         else
1201                                 tx_pkt_burst = mlx5_tx_burst_vec;
1202                         DRV_LOG(DEBUG,
1203                                 "port %u selected enhanced MPW Tx vectorized"
1204                                 " function",
1205                                 dev->data->port_id);
1206                 } else {
1207                         tx_pkt_burst = mlx5_tx_burst_empw;
1208                         DRV_LOG(DEBUG,
1209                                 "port %u selected enhanced MPW Tx function",
1210                                 dev->data->port_id);
1211                 }
1212         } else if (config->mps && (config->txq_inline > 0)) {
1213                 tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1214                 DRV_LOG(DEBUG, "port %u selected MPW inline Tx function",
1215                         dev->data->port_id);
1216         } else if (config->mps) {
1217                 tx_pkt_burst = mlx5_tx_burst_mpw;
1218                 DRV_LOG(DEBUG, "port %u selected MPW Tx function",
1219                         dev->data->port_id);
1220         }
1221         return tx_pkt_burst;
1222 }
1223
1224 /**
1225  * Configure the RX function to use.
1226  *
1227  * @param dev
1228  *   Pointer to private data structure.
1229  *
1230  * @return
1231  *   Pointer to selected Rx burst function.
1232  */
1233 eth_rx_burst_t
1234 mlx5_select_rx_function(struct rte_eth_dev *dev)
1235 {
1236         eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
1237
1238         assert(dev != NULL);
1239         if (mlx5_check_vec_rx_support(dev) > 0) {
1240                 rx_pkt_burst = mlx5_rx_burst_vec;
1241                 DRV_LOG(DEBUG, "port %u selected Rx vectorized function",
1242                         dev->data->port_id);
1243         }
1244         return rx_pkt_burst;
1245 }
1246
1247 /**
1248  * Check if mlx5 device was removed.
1249  *
1250  * @param dev
1251  *   Pointer to Ethernet device structure.
1252  *
1253  * @return
1254  *   1 when device is removed, otherwise 0.
1255  */
1256 int
1257 mlx5_is_removed(struct rte_eth_dev *dev)
1258 {
1259         struct ibv_device_attr device_attr;
1260         struct priv *priv = dev->data->dev_private;
1261
1262         if (mlx5_glue->query_device(priv->ctx, &device_attr) == EIO)
1263                 return 1;
1264         return 0;
1265 }