ceph/src/spdk/dpdk/drivers/net/mlx4/mlx4_ethdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2017 6WIND S.A.
   3  * Copyright 2017 Mellanox Technologies, Ltd
   4  */
   5
   6 /**
   7  * @file
   8  * Miscellaneous control operations for mlx4 driver.
   9  */
  10
  11 #include <assert.h>
  12 #include <dirent.h>
  13 #include <errno.h>
  14 #include <linux/ethtool.h>
  15 #include <linux/sockios.h>
  16 #include <net/if.h>
  17 #include <netinet/ip.h>
  18 #include <stddef.h>
  19 #include <stdint.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <sys/ioctl.h>
  24 #include <sys/socket.h>
  25 #include <unistd.h>
  26
  27 /* Verbs headers do not support -pedantic. */
  28 #ifdef PEDANTIC
  29 #pragma GCC diagnostic ignored "-Wpedantic"
  30 #endif
  31 #include <infiniband/verbs.h>
  32 #ifdef PEDANTIC
  33 #pragma GCC diagnostic error "-Wpedantic"
  34 #endif
  35
  36 #include <rte_bus_pci.h>
  37 #include <rte_errno.h>
  38 #include <rte_ethdev_driver.h>
  39 #include <rte_ether.h>
  40 #include <rte_flow.h>
  41 #include <rte_pci.h>
  42 #include <rte_string_fns.h>
  43
  44 #include "mlx4.h"
  45 #include "mlx4_flow.h"
  46 #include "mlx4_glue.h"
  47 #include "mlx4_rxtx.h"
  48 #include "mlx4_utils.h"
  49
  50 /**
  51  * Get interface name from private structure.
  52  *
  53  * @param[in] priv
  54  *   Pointer to private structure.
  55  * @param[out] ifname
  56  *   Interface name output buffer.
  57  *
  58  * @return
  59  *   0 on success, negative errno value otherwise and rte_errno is set.
  60  */
  61 int
  62 mlx4_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE])
  63 {
  64         DIR *dir;
  65         struct dirent *dent;
  66         unsigned int dev_type = 0;
  67         unsigned int dev_port_prev = ~0u;
  68         char match[IF_NAMESIZE] = "";
  69
  70         {
  71                 MKSTR(path, "%s/device/net", priv->ctx->device->ibdev_path);
  72
  73                 dir = opendir(path);
  74                 if (dir == NULL) {
  75                         rte_errno = errno;
  76                         return -rte_errno;
  77                 }
  78         }
  79         while ((dent = readdir(dir)) != NULL) {
  80                 char *name = dent->d_name;
  81                 FILE *file;
  82                 unsigned int dev_port;
  83                 int r;
  84
  85                 if ((name[0] == '.') &&
  86                     ((name[1] == '\0') ||
  87                      ((name[1] == '.') && (name[2] == '\0'))))
  88                         continue;
  89
  90                 MKSTR(path, "%s/device/net/%s/%s",
  91                       priv->ctx->device->ibdev_path, name,
  92                       (dev_type ? "dev_id" : "dev_port"));
  93
  94                 file = fopen(path, "rb");
  95                 if (file == NULL) {
  96                         if (errno != ENOENT)
  97                                 continue;
  98                         /*
  99                          * Switch to dev_id when dev_port does not exist as
 100                          * is the case with Linux kernel versions < 3.15.
 101                          */
 102 try_dev_id:
 103                         match[0] = '\0';
 104                         if (dev_type)
 105                                 break;
 106                         dev_type = 1;
 107                         dev_port_prev = ~0u;
 108                         rewinddir(dir);
 109                         continue;
 110                 }
 111                 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
 112                 fclose(file);
 113                 if (r != 1)
 114                         continue;
 115                 /*
 116                  * Switch to dev_id when dev_port returns the same value for
 117                  * all ports. May happen when using a MOFED release older than
 118                  * 3.0 with a Linux kernel >= 3.15.
 119                  */
 120                 if (dev_port == dev_port_prev)
 121                         goto try_dev_id;
 122                 dev_port_prev = dev_port;
 123                 if (dev_port == (priv->port - 1u))
 124                         strlcpy(match, name, sizeof(match));
 125         }
 126         closedir(dir);
 127         if (match[0] == '\0') {
 128                 rte_errno = ENODEV;
 129                 return -rte_errno;
 130         }
 131         strncpy(*ifname, match, sizeof(*ifname));
 132         return 0;
 133 }
 134
 135 /**
 136  * Perform ifreq ioctl() on associated Ethernet device.
 137  *
 138  * @param[in] priv
 139  *   Pointer to private structure.
 140  * @param req
 141  *   Request number to pass to ioctl().
 142  * @param[out] ifr
 143  *   Interface request structure output buffer.
 144  *
 145  * @return
 146  *   0 on success, negative errno value otherwise and rte_errno is set.
 147  */
 148 static int
 149 mlx4_ifreq(const struct priv *priv, int req, struct ifreq *ifr)
 150 {
 151         int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
 152         int ret;
 153
 154         if (sock == -1) {
 155                 rte_errno = errno;
 156                 return -rte_errno;
 157         }
 158         ret = mlx4_get_ifname(priv, &ifr->ifr_name);
 159         if (!ret && ioctl(sock, req, ifr) == -1) {
 160                 rte_errno = errno;
 161                 ret = -rte_errno;
 162         }
 163         close(sock);
 164         return ret;
 165 }
 166
 167 /**
 168  * Get MAC address by querying netdevice.
 169  *
 170  * @param[in] priv
 171  *   Pointer to private structure.
 172  * @param[out] mac
 173  *   MAC address output buffer.
 174  *
 175  * @return
 176  *   0 on success, negative errno value otherwise and rte_errno is set.
 177  */
 178 int
 179 mlx4_get_mac(struct priv *priv, uint8_t (*mac)[ETHER_ADDR_LEN])
 180 {
 181         struct ifreq request;
 182         int ret = mlx4_ifreq(priv, SIOCGIFHWADDR, &request);
 183
 184         if (ret)
 185                 return ret;
 186         memcpy(mac, request.ifr_hwaddr.sa_data, ETHER_ADDR_LEN);
 187         return 0;
 188 }
 189
 190 /**
 191  * Get device MTU.
 192  *
 193  * @param priv
 194  *   Pointer to private structure.
 195  * @param[out] mtu
 196  *   MTU value output buffer.
 197  *
 198  * @return
 199  *   0 on success, negative errno value otherwise and rte_errno is set.
 200  */
 201 int
 202 mlx4_mtu_get(struct priv *priv, uint16_t *mtu)
 203 {
 204         struct ifreq request;
 205         int ret = mlx4_ifreq(priv, SIOCGIFMTU, &request);
 206
 207         if (ret)
 208                 return ret;
 209         *mtu = request.ifr_mtu;
 210         return 0;
 211 }
 212
 213 /**
 214  * DPDK callback to change the MTU.
 215  *
 216  * @param priv
 217  *   Pointer to Ethernet device structure.
 218  * @param mtu
 219  *   MTU value to set.
 220  *
 221  * @return
 222  *   0 on success, negative errno value otherwise and rte_errno is set.
 223  */
 224 int
 225 mlx4_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
 226 {
 227         struct priv *priv = dev->data->dev_private;
 228         struct ifreq request = { .ifr_mtu = mtu, };
 229         int ret = mlx4_ifreq(priv, SIOCSIFMTU, &request);
 230
 231         if (ret)
 232                 return ret;
 233         priv->mtu = mtu;
 234         return 0;
 235 }
 236
 237 /**
 238  * Set device flags.
 239  *
 240  * @param priv
 241  *   Pointer to private structure.
 242  * @param keep
 243  *   Bitmask for flags that must remain untouched.
 244  * @param flags
 245  *   Bitmask for flags to modify.
 246  *
 247  * @return
 248  *   0 on success, negative errno value otherwise and rte_errno is set.
 249  */
 250 static int
 251 mlx4_set_flags(struct priv *priv, unsigned int keep, unsigned int flags)
 252 {
 253         struct ifreq request;
 254         int ret = mlx4_ifreq(priv, SIOCGIFFLAGS, &request);
 255
 256         if (ret)
 257                 return ret;
 258         request.ifr_flags &= keep;
 259         request.ifr_flags |= flags & ~keep;
 260         return mlx4_ifreq(priv, SIOCSIFFLAGS, &request);
 261 }
 262
 263 /**
 264  * Change the link state (UP / DOWN).
 265  *
 266  * @param priv
 267  *   Pointer to Ethernet device private data.
 268  * @param up
 269  *   Nonzero for link up, otherwise link down.
 270  *
 271  * @return
 272  *   0 on success, negative errno value otherwise and rte_errno is set.
 273  */
 274 static int
 275 mlx4_dev_set_link(struct priv *priv, int up)
 276 {
 277         int err;
 278
 279         if (up) {
 280                 err = mlx4_set_flags(priv, ~IFF_UP, IFF_UP);
 281                 if (err)
 282                         return err;
 283         } else {
 284                 err = mlx4_set_flags(priv, ~IFF_UP, ~IFF_UP);
 285                 if (err)
 286                         return err;
 287         }
 288         return 0;
 289 }
 290
 291 /**
 292  * DPDK callback to bring the link DOWN.
 293  *
 294  * @param dev
 295  *   Pointer to Ethernet device structure.
 296  *
 297  * @return
 298  *   0 on success, negative errno value otherwise and rte_errno is set.
 299  */
 300 int
 301 mlx4_dev_set_link_down(struct rte_eth_dev *dev)
 302 {
 303         struct priv *priv = dev->data->dev_private;
 304
 305         return mlx4_dev_set_link(priv, 0);
 306 }
 307
 308 /**
 309  * DPDK callback to bring the link UP.
 310  *
 311  * @param dev
 312  *   Pointer to Ethernet device structure.
 313  *
 314  * @return
 315  *   0 on success, negative errno value otherwise and rte_errno is set.
 316  */
 317 int
 318 mlx4_dev_set_link_up(struct rte_eth_dev *dev)
 319 {
 320         struct priv *priv = dev->data->dev_private;
 321
 322         return mlx4_dev_set_link(priv, 1);
 323 }
 324
 325 /**
 326  * Supported Rx mode toggles.
 327  *
 328  * Even and odd values respectively stand for off and on.
 329  */
 330 enum rxmode_toggle {
 331         RXMODE_TOGGLE_PROMISC_OFF,
 332         RXMODE_TOGGLE_PROMISC_ON,
 333         RXMODE_TOGGLE_ALLMULTI_OFF,
 334         RXMODE_TOGGLE_ALLMULTI_ON,
 335 };
 336
 337 /**
 338  * Helper function to toggle promiscuous and all multicast modes.
 339  *
 340  * @param dev
 341  *   Pointer to Ethernet device structure.
 342  * @param toggle
 343  *   Toggle to set.
 344  */
 345 static void
 346 mlx4_rxmode_toggle(struct rte_eth_dev *dev, enum rxmode_toggle toggle)
 347 {
 348         struct priv *priv = dev->data->dev_private;
 349         const char *mode;
 350         struct rte_flow_error error;
 351
 352         switch (toggle) {
 353         case RXMODE_TOGGLE_PROMISC_OFF:
 354         case RXMODE_TOGGLE_PROMISC_ON:
 355                 mode = "promiscuous";
 356                 dev->data->promiscuous = toggle & 1;
 357                 break;
 358         case RXMODE_TOGGLE_ALLMULTI_OFF:
 359         case RXMODE_TOGGLE_ALLMULTI_ON:
 360                 mode = "all multicast";
 361                 dev->data->all_multicast = toggle & 1;
 362                 break;
 363         }
 364         if (!mlx4_flow_sync(priv, &error))
 365                 return;
 366         ERROR("cannot toggle %s mode (code %d, \"%s\"),"
 367               " flow error type %d, cause %p, message: %s",
 368               mode, rte_errno, strerror(rte_errno), error.type, error.cause,
 369               error.message ? error.message : "(unspecified)");
 370 }
 371
 372 /**
 373  * DPDK callback to enable promiscuous mode.
 374  *
 375  * @param dev
 376  *   Pointer to Ethernet device structure.
 377  */
 378 void
 379 mlx4_promiscuous_enable(struct rte_eth_dev *dev)
 380 {
 381         mlx4_rxmode_toggle(dev, RXMODE_TOGGLE_PROMISC_ON);
 382 }
 383
 384 /**
 385  * DPDK callback to disable promiscuous mode.
 386  *
 387  * @param dev
 388  *   Pointer to Ethernet device structure.
 389  */
 390 void
 391 mlx4_promiscuous_disable(struct rte_eth_dev *dev)
 392 {
 393         mlx4_rxmode_toggle(dev, RXMODE_TOGGLE_PROMISC_OFF);
 394 }
 395
 396 /**
 397  * DPDK callback to enable all multicast mode.
 398  *
 399  * @param dev
 400  *   Pointer to Ethernet device structure.
 401  */
 402 void
 403 mlx4_allmulticast_enable(struct rte_eth_dev *dev)
 404 {
 405         mlx4_rxmode_toggle(dev, RXMODE_TOGGLE_ALLMULTI_ON);
 406 }
 407
 408 /**
 409  * DPDK callback to disable all multicast mode.
 410  *
 411  * @param dev
 412  *   Pointer to Ethernet device structure.
 413  */
 414 void
 415 mlx4_allmulticast_disable(struct rte_eth_dev *dev)
 416 {
 417         mlx4_rxmode_toggle(dev, RXMODE_TOGGLE_ALLMULTI_OFF);
 418 }
 419
 420 /**
 421  * DPDK callback to remove a MAC address.
 422  *
 423  * @param dev
 424  *   Pointer to Ethernet device structure.
 425  * @param index
 426  *   MAC address index.
 427  */
 428 void
 429 mlx4_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
 430 {
 431         struct priv *priv = dev->data->dev_private;
 432         struct rte_flow_error error;
 433
 434         if (index >= RTE_DIM(priv->mac)) {
 435                 rte_errno = EINVAL;
 436                 return;
 437         }
 438         memset(&priv->mac[index], 0, sizeof(priv->mac[index]));
 439         if (!mlx4_flow_sync(priv, &error))
 440                 return;
 441         ERROR("failed to synchronize flow rules after removing MAC address"
 442               " at index %d (code %d, \"%s\"),"
 443               " flow error type %d, cause %p, message: %s",
 444               index, rte_errno, strerror(rte_errno), error.type, error.cause,
 445               error.message ? error.message : "(unspecified)");
 446 }
 447
 448 /**
 449  * DPDK callback to add a MAC address.
 450  *
 451  * @param dev
 452  *   Pointer to Ethernet device structure.
 453  * @param mac_addr
 454  *   MAC address to register.
 455  * @param index
 456  *   MAC address index.
 457  * @param vmdq
 458  *   VMDq pool index to associate address with (ignored).
 459  *
 460  * @return
 461  *   0 on success, negative errno value otherwise and rte_errno is set.
 462  */
 463 int
 464 mlx4_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
 465                   uint32_t index, uint32_t vmdq)
 466 {
 467         struct priv *priv = dev->data->dev_private;
 468         struct rte_flow_error error;
 469         int ret;
 470
 471         (void)vmdq;
 472         if (index >= RTE_DIM(priv->mac)) {
 473                 rte_errno = EINVAL;
 474                 return -rte_errno;
 475         }
 476         memcpy(&priv->mac[index], mac_addr, sizeof(priv->mac[index]));
 477         ret = mlx4_flow_sync(priv, &error);
 478         if (!ret)
 479                 return 0;
 480         ERROR("failed to synchronize flow rules after adding MAC address"
 481               " at index %d (code %d, \"%s\"),"
 482               " flow error type %d, cause %p, message: %s",
 483               index, rte_errno, strerror(rte_errno), error.type, error.cause,
 484               error.message ? error.message : "(unspecified)");
 485         return ret;
 486 }
 487
 488 /**
 489  * DPDK callback to configure a VLAN filter.
 490  *
 491  * @param dev
 492  *   Pointer to Ethernet device structure.
 493  * @param vlan_id
 494  *   VLAN ID to filter.
 495  * @param on
 496  *   Toggle filter.
 497  *
 498  * @return
 499  *   0 on success, negative errno value otherwise and rte_errno is set.
 500  */
 501 int
 502 mlx4_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
 503 {
 504         struct priv *priv = dev->data->dev_private;
 505         struct rte_flow_error error;
 506         unsigned int vidx = vlan_id / 64;
 507         unsigned int vbit = vlan_id % 64;
 508         uint64_t *v;
 509         int ret;
 510
 511         if (vidx >= RTE_DIM(dev->data->vlan_filter_conf.ids)) {
 512                 rte_errno = EINVAL;
 513                 return -rte_errno;
 514         }
 515         v = &dev->data->vlan_filter_conf.ids[vidx];
 516         *v &= ~(UINT64_C(1) << vbit);
 517         *v |= (uint64_t)!!on << vbit;
 518         ret = mlx4_flow_sync(priv, &error);
 519         if (!ret)
 520                 return 0;
 521         ERROR("failed to synchronize flow rules after %s VLAN filter on ID %u"
 522               " (code %d, \"%s\"), "
 523               " flow error type %d, cause %p, message: %s",
 524               on ? "enabling" : "disabling", vlan_id,
 525               rte_errno, strerror(rte_errno), error.type, error.cause,
 526               error.message ? error.message : "(unspecified)");
 527         return ret;
 528 }
 529
 530 /**
 531  * DPDK callback to set the primary MAC address.
 532  *
 533  * @param dev
 534  *   Pointer to Ethernet device structure.
 535  * @param mac_addr
 536  *   MAC address to register.
 537  *
 538  * @return
 539  *   0 on success, negative errno value otherwise and rte_errno is set.
 540  */
 541 int
 542 mlx4_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
 543 {
 544         return mlx4_mac_addr_add(dev, mac_addr, 0, 0);
 545 }
 546
 547 /**
 548  * DPDK callback to get information about the device.
 549  *
 550  * @param dev
 551  *   Pointer to Ethernet device structure.
 552  * @param[out] info
 553  *   Info structure output buffer.
 554  */
 555 void
 556 mlx4_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 557 {
 558         struct priv *priv = dev->data->dev_private;
 559         unsigned int max;
 560         char ifname[IF_NAMESIZE];
 561
 562         /* FIXME: we should ask the device for these values. */
 563         info->min_rx_bufsize = 32;
 564         info->max_rx_pktlen = 65536;
 565         /*
 566          * Since we need one CQ per QP, the limit is the minimum number
 567          * between the two values.
 568          */
 569         max = ((priv->device_attr.max_cq > priv->device_attr.max_qp) ?
 570                priv->device_attr.max_qp : priv->device_attr.max_cq);
 571         /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
 572         if (max >= 65535)
 573                 max = 65535;
 574         info->max_rx_queues = max;
 575         info->max_tx_queues = max;
 576         info->max_mac_addrs = RTE_DIM(priv->mac);
 577         info->tx_offload_capa = mlx4_get_tx_port_offloads(priv);
 578         info->rx_queue_offload_capa = mlx4_get_rx_queue_offloads(priv);
 579         info->rx_offload_capa = (mlx4_get_rx_port_offloads(priv) |
 580                                  info->rx_queue_offload_capa);
 581         if (mlx4_get_ifname(priv, &ifname) == 0)
 582                 info->if_index = if_nametoindex(ifname);
 583         info->hash_key_size = MLX4_RSS_HASH_KEY_SIZE;
 584         info->speed_capa =
 585                         ETH_LINK_SPEED_1G |
 586                         ETH_LINK_SPEED_10G |
 587                         ETH_LINK_SPEED_20G |
 588                         ETH_LINK_SPEED_40G |
 589                         ETH_LINK_SPEED_56G;
 590         info->flow_type_rss_offloads = mlx4_conv_rss_types(priv, 0, 1);
 591 }
 592
 593 /**
 594  * DPDK callback to get device statistics.
 595  *
 596  * @param dev
 597  *   Pointer to Ethernet device structure.
 598  * @param[out] stats
 599  *   Stats structure output buffer.
 600  */
 601 int
 602 mlx4_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 603 {
 604         struct rte_eth_stats tmp;
 605         unsigned int i;
 606         unsigned int idx;
 607
 608         memset(&tmp, 0, sizeof(tmp));
 609         /* Add software counters. */
 610         for (i = 0; i != dev->data->nb_rx_queues; ++i) {
 611                 struct rxq *rxq = dev->data->rx_queues[i];
 612
 613                 if (rxq == NULL)
 614                         continue;
 615                 idx = rxq->stats.idx;
 616                 if (idx < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
 617                         tmp.q_ipackets[idx] += rxq->stats.ipackets;
 618                         tmp.q_ibytes[idx] += rxq->stats.ibytes;
 619                         tmp.q_errors[idx] += (rxq->stats.idropped +
 620                                               rxq->stats.rx_nombuf);
 621                 }
 622                 tmp.ipackets += rxq->stats.ipackets;
 623                 tmp.ibytes += rxq->stats.ibytes;
 624                 tmp.ierrors += rxq->stats.idropped;
 625                 tmp.rx_nombuf += rxq->stats.rx_nombuf;
 626         }
 627         for (i = 0; i != dev->data->nb_tx_queues; ++i) {
 628                 struct txq *txq = dev->data->tx_queues[i];
 629
 630                 if (txq == NULL)
 631                         continue;
 632                 idx = txq->stats.idx;
 633                 if (idx < RTE_ETHDEV_QUEUE_STAT_CNTRS) {
 634                         tmp.q_opackets[idx] += txq->stats.opackets;
 635                         tmp.q_obytes[idx] += txq->stats.obytes;
 636                         tmp.q_errors[idx] += txq->stats.odropped;
 637                 }
 638                 tmp.opackets += txq->stats.opackets;
 639                 tmp.obytes += txq->stats.obytes;
 640                 tmp.oerrors += txq->stats.odropped;
 641         }
 642         *stats = tmp;
 643         return 0;
 644 }
 645
 646 /**
 647  * DPDK callback to clear device statistics.
 648  *
 649  * @param dev
 650  *   Pointer to Ethernet device structure.
 651  */
 652 void
 653 mlx4_stats_reset(struct rte_eth_dev *dev)
 654 {
 655         unsigned int i;
 656
 657         for (i = 0; i != dev->data->nb_rx_queues; ++i) {
 658                 struct rxq *rxq = dev->data->rx_queues[i];
 659
 660                 if (rxq)
 661                         rxq->stats = (struct mlx4_rxq_stats){
 662                                 .idx = rxq->stats.idx,
 663                         };
 664         }
 665         for (i = 0; i != dev->data->nb_tx_queues; ++i) {
 666                 struct txq *txq = dev->data->tx_queues[i];
 667
 668                 if (txq)
 669                         txq->stats = (struct mlx4_txq_stats){
 670                                 .idx = txq->stats.idx,
 671                         };
 672         }
 673 }
 674
 675 /**
 676  * DPDK callback to retrieve physical link information.
 677  *
 678  * @param dev
 679  *   Pointer to Ethernet device structure.
 680  * @param wait_to_complete
 681  *   Wait for request completion (ignored).
 682  *
 683  * @return
 684  *   0 on success, negative errno value otherwise and rte_errno is set.
 685  */
 686 int
 687 mlx4_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 688 {
 689         const struct priv *priv = dev->data->dev_private;
 690         struct ethtool_cmd edata = {
 691                 .cmd = ETHTOOL_GSET,
 692         };
 693         struct ifreq ifr;
 694         struct rte_eth_link dev_link;
 695         int link_speed = 0;
 696
 697         if (priv == NULL) {
 698                 rte_errno = EINVAL;
 699                 return -rte_errno;
 700         }
 701         (void)wait_to_complete;
 702         if (mlx4_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
 703                 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(rte_errno));
 704                 return -rte_errno;
 705         }
 706         memset(&dev_link, 0, sizeof(dev_link));
 707         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 708                                 (ifr.ifr_flags & IFF_RUNNING));
 709         ifr.ifr_data = (void *)&edata;
 710         if (mlx4_ifreq(priv, SIOCETHTOOL, &ifr)) {
 711                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
 712                      strerror(rte_errno));
 713                 return -rte_errno;
 714         }
 715         link_speed = ethtool_cmd_speed(&edata);
 716         if (link_speed == -1)
 717                 dev_link.link_speed = ETH_SPEED_NUM_NONE;
 718         else
 719                 dev_link.link_speed = link_speed;
 720         dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
 721                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 722         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 723                                   ETH_LINK_SPEED_FIXED);
 724         dev->data->dev_link = dev_link;
 725         return 0;
 726 }
 727
 728 /**
 729  * DPDK callback to get flow control status.
 730  *
 731  * @param dev
 732  *   Pointer to Ethernet device structure.
 733  * @param[out] fc_conf
 734  *   Flow control output buffer.
 735  *
 736  * @return
 737  *   0 on success, negative errno value otherwise and rte_errno is set.
 738  */
 739 int
 740 mlx4_flow_ctrl_get(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 741 {
 742         struct priv *priv = dev->data->dev_private;
 743         struct ifreq ifr;
 744         struct ethtool_pauseparam ethpause = {
 745                 .cmd = ETHTOOL_GPAUSEPARAM,
 746         };
 747         int ret;
 748
 749         ifr.ifr_data = (void *)&ethpause;
 750         if (mlx4_ifreq(priv, SIOCETHTOOL, &ifr)) {
 751                 ret = rte_errno;
 752                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)"
 753                      " failed: %s",
 754                      strerror(rte_errno));
 755                 goto out;
 756         }
 757         fc_conf->autoneg = ethpause.autoneg;
 758         if (ethpause.rx_pause && ethpause.tx_pause)
 759                 fc_conf->mode = RTE_FC_FULL;
 760         else if (ethpause.rx_pause)
 761                 fc_conf->mode = RTE_FC_RX_PAUSE;
 762         else if (ethpause.tx_pause)
 763                 fc_conf->mode = RTE_FC_TX_PAUSE;
 764         else
 765                 fc_conf->mode = RTE_FC_NONE;
 766         ret = 0;
 767 out:
 768         assert(ret >= 0);
 769         return -ret;
 770 }
 771
 772 /**
 773  * DPDK callback to modify flow control parameters.
 774  *
 775  * @param dev
 776  *   Pointer to Ethernet device structure.
 777  * @param[in] fc_conf
 778  *   Flow control parameters.
 779  *
 780  * @return
 781  *   0 on success, negative errno value otherwise and rte_errno is set.
 782  */
 783 int
 784 mlx4_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 785 {
 786         struct priv *priv = dev->data->dev_private;
 787         struct ifreq ifr;
 788         struct ethtool_pauseparam ethpause = {
 789                 .cmd = ETHTOOL_SPAUSEPARAM,
 790         };
 791         int ret;
 792
 793         ifr.ifr_data = (void *)&ethpause;
 794         ethpause.autoneg = fc_conf->autoneg;
 795         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 796             (fc_conf->mode & RTE_FC_RX_PAUSE))
 797                 ethpause.rx_pause = 1;
 798         else
 799                 ethpause.rx_pause = 0;
 800         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 801             (fc_conf->mode & RTE_FC_TX_PAUSE))
 802                 ethpause.tx_pause = 1;
 803         else
 804                 ethpause.tx_pause = 0;
 805         if (mlx4_ifreq(priv, SIOCETHTOOL, &ifr)) {
 806                 ret = rte_errno;
 807                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
 808                      " failed: %s",
 809                      strerror(rte_errno));
 810                 goto out;
 811         }
 812         ret = 0;
 813 out:
 814         assert(ret >= 0);
 815         return -ret;
 816 }
 817
 818 /**
 819  * DPDK callback to retrieve the received packet types that are recognized
 820  * by the device.
 821  *
 822  * @param dev
 823  *   Pointer to Ethernet device structure.
 824  *
 825  * @return
 826  *   Pointer to an array of recognized packet types if in Rx burst mode,
 827  *   NULL otherwise.
 828  */
 829 const uint32_t *
 830 mlx4_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 831 {
 832         static const uint32_t ptypes[] = {
 833                 /* refers to rxq_cq_to_pkt_type() */
 834                 RTE_PTYPE_L2_ETHER,
 835                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 836                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 837                 RTE_PTYPE_L4_FRAG,
 838                 RTE_PTYPE_L4_TCP,
 839                 RTE_PTYPE_L4_UDP,
 840                 RTE_PTYPE_UNKNOWN
 841         };
 842         static const uint32_t ptypes_l2tun[] = {
 843                 /* refers to rxq_cq_to_pkt_type() */
 844                 RTE_PTYPE_L2_ETHER,
 845                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 846                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 847                 RTE_PTYPE_L4_FRAG,
 848                 RTE_PTYPE_L4_TCP,
 849                 RTE_PTYPE_L4_UDP,
 850                 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
 851                 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
 852                 RTE_PTYPE_UNKNOWN
 853         };
 854         struct priv *priv = dev->data->dev_private;
 855
 856         if (dev->rx_pkt_burst == mlx4_rx_burst) {
 857                 if (priv->hw_csum_l2tun)
 858                         return ptypes_l2tun;
 859                 else
 860                         return ptypes;
 861         }
 862         return NULL;
 863 }
 864
 865 /**
 866  * Check if mlx4 device was removed.
 867  *
 868  * @param dev
 869  *   Pointer to Ethernet device structure.
 870  *
 871  * @return
 872  *   1 when device is removed, otherwise 0.
 873  */
 874 int
 875 mlx4_is_removed(struct rte_eth_dev *dev)
 876 {
 877         struct ibv_device_attr device_attr;
 878         struct priv *priv = dev->data->dev_private;
 879
 880         if (mlx4_glue->query_device(priv->ctx, &device_attr) == EIO)
 881                 return 1;
 882         return 0;
 883 }