drivers/net/failsafe/failsafe_ops.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2017 6WIND S.A.
   3  * Copyright 2017 Mellanox Technologies, Ltd
   4  */
   5
   6 #include <stdbool.h>
   7 #include <stdint.h>
   8 #include <unistd.h>
   9
  10 #include <rte_debug.h>
  11 #include <rte_atomic.h>
  12 #include <rte_ethdev_driver.h>
  13 #include <rte_malloc.h>
  14 #include <rte_flow.h>
  15 #include <rte_cycles.h>
  16 #include <rte_ethdev.h>
  17
  18 #include "failsafe_private.h"
  19
  20 static int
  21 fs_dev_configure(struct rte_eth_dev *dev)
  22 {
  23         struct sub_device *sdev;
  24         uint8_t i;
  25         int ret;
  26
  27         fs_lock(dev, 0);
  28         FOREACH_SUBDEV(sdev, i, dev) {
  29                 int rmv_interrupt = 0;
  30                 int lsc_interrupt = 0;
  31                 int lsc_enabled;
  32
  33                 if (sdev->state != DEV_PROBED &&
  34                     !(PRIV(dev)->alarm_lock == 0 && sdev->state == DEV_ACTIVE))
  35                         continue;
  36
  37                 rmv_interrupt = ETH(sdev)->data->dev_flags &
  38                                 RTE_ETH_DEV_INTR_RMV;
  39                 if (rmv_interrupt) {
  40                         DEBUG("Enabling RMV interrupts for sub_device %d", i);
  41                         dev->data->dev_conf.intr_conf.rmv = 1;
  42                 } else {
  43                         DEBUG("sub_device %d does not support RMV event", i);
  44                 }
  45                 lsc_enabled = dev->data->dev_conf.intr_conf.lsc;
  46                 lsc_interrupt = lsc_enabled &&
  47                                 (ETH(sdev)->data->dev_flags &
  48                                  RTE_ETH_DEV_INTR_LSC);
  49                 if (lsc_interrupt) {
  50                         DEBUG("Enabling LSC interrupts for sub_device %d", i);
  51                         dev->data->dev_conf.intr_conf.lsc = 1;
  52                 } else if (lsc_enabled && !lsc_interrupt) {
  53                         DEBUG("Disabling LSC interrupts for sub_device %d", i);
  54                         dev->data->dev_conf.intr_conf.lsc = 0;
  55                 }
  56                 DEBUG("Configuring sub-device %d", i);
  57                 ret = rte_eth_dev_configure(PORT_ID(sdev),
  58                                         dev->data->nb_rx_queues,
  59                                         dev->data->nb_tx_queues,
  60                                         &dev->data->dev_conf);
  61                 if (ret) {
  62                         if (!fs_err(sdev, ret))
  63                                 continue;
  64                         ERROR("Could not configure sub_device %d", i);
  65                         fs_unlock(dev, 0);
  66                         return ret;
  67                 }
  68                 if (rmv_interrupt && sdev->rmv_callback == 0) {
  69                         ret = rte_eth_dev_callback_register(PORT_ID(sdev),
  70                                         RTE_ETH_EVENT_INTR_RMV,
  71                                         failsafe_eth_rmv_event_callback,
  72                                         sdev);
  73                         if (ret)
  74                                 WARN("Failed to register RMV callback for sub_device %d",
  75                                      SUB_ID(sdev));
  76                         else
  77                                 sdev->rmv_callback = 1;
  78                 }
  79                 dev->data->dev_conf.intr_conf.rmv = 0;
  80                 if (lsc_interrupt && sdev->lsc_callback == 0) {
  81                         ret = rte_eth_dev_callback_register(PORT_ID(sdev),
  82                                                 RTE_ETH_EVENT_INTR_LSC,
  83                                                 failsafe_eth_lsc_event_callback,
  84                                                 dev);
  85                         if (ret)
  86                                 WARN("Failed to register LSC callback for sub_device %d",
  87                                      SUB_ID(sdev));
  88                         else
  89                                 sdev->lsc_callback = 1;
  90                 }
  91                 dev->data->dev_conf.intr_conf.lsc = lsc_enabled;
  92                 sdev->state = DEV_ACTIVE;
  93         }
  94         if (PRIV(dev)->state < DEV_ACTIVE)
  95                 PRIV(dev)->state = DEV_ACTIVE;
  96         fs_unlock(dev, 0);
  97         return 0;
  98 }
  99
 100 static void
 101 fs_set_queues_state_start(struct rte_eth_dev *dev)
 102 {
 103         struct rxq *rxq;
 104         struct txq *txq;
 105         uint16_t i;
 106
 107         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 108                 rxq = dev->data->rx_queues[i];
 109                 if (rxq != NULL && !rxq->info.conf.rx_deferred_start)
 110                         dev->data->rx_queue_state[i] =
 111                                                 RTE_ETH_QUEUE_STATE_STARTED;
 112         }
 113         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 114                 txq = dev->data->tx_queues[i];
 115                 if (txq != NULL && !txq->info.conf.tx_deferred_start)
 116                         dev->data->tx_queue_state[i] =
 117                                                 RTE_ETH_QUEUE_STATE_STARTED;
 118         }
 119 }
 120
 121 static int
 122 fs_dev_start(struct rte_eth_dev *dev)
 123 {
 124         struct sub_device *sdev;
 125         uint8_t i;
 126         int ret;
 127
 128         fs_lock(dev, 0);
 129         ret = failsafe_rx_intr_install(dev);
 130         if (ret) {
 131                 fs_unlock(dev, 0);
 132                 return ret;
 133         }
 134         FOREACH_SUBDEV(sdev, i, dev) {
 135                 if (sdev->state != DEV_ACTIVE)
 136                         continue;
 137                 DEBUG("Starting sub_device %d", i);
 138                 ret = rte_eth_dev_start(PORT_ID(sdev));
 139                 if (ret) {
 140                         if (!fs_err(sdev, ret))
 141                                 continue;
 142                         fs_unlock(dev, 0);
 143                         return ret;
 144                 }
 145                 ret = failsafe_rx_intr_install_subdevice(sdev);
 146                 if (ret) {
 147                         if (!fs_err(sdev, ret))
 148                                 continue;
 149                         rte_eth_dev_stop(PORT_ID(sdev));
 150                         fs_unlock(dev, 0);
 151                         return ret;
 152                 }
 153                 sdev->state = DEV_STARTED;
 154         }
 155         if (PRIV(dev)->state < DEV_STARTED) {
 156                 PRIV(dev)->state = DEV_STARTED;
 157                 fs_set_queues_state_start(dev);
 158         }
 159         fs_switch_dev(dev, NULL);
 160         fs_unlock(dev, 0);
 161         return 0;
 162 }
 163
 164 static void
 165 fs_set_queues_state_stop(struct rte_eth_dev *dev)
 166 {
 167         uint16_t i;
 168
 169         for (i = 0; i < dev->data->nb_rx_queues; i++)
 170                 if (dev->data->rx_queues[i] != NULL)
 171                         dev->data->rx_queue_state[i] =
 172                                                 RTE_ETH_QUEUE_STATE_STOPPED;
 173         for (i = 0; i < dev->data->nb_tx_queues; i++)
 174                 if (dev->data->tx_queues[i] != NULL)
 175                         dev->data->tx_queue_state[i] =
 176                                                 RTE_ETH_QUEUE_STATE_STOPPED;
 177 }
 178
 179 static void
 180 fs_dev_stop(struct rte_eth_dev *dev)
 181 {
 182         struct sub_device *sdev;
 183         uint8_t i;
 184
 185         fs_lock(dev, 0);
 186         PRIV(dev)->state = DEV_STARTED - 1;
 187         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_STARTED) {
 188                 rte_eth_dev_stop(PORT_ID(sdev));
 189                 failsafe_rx_intr_uninstall_subdevice(sdev);
 190                 sdev->state = DEV_STARTED - 1;
 191         }
 192         failsafe_rx_intr_uninstall(dev);
 193         fs_set_queues_state_stop(dev);
 194         fs_unlock(dev, 0);
 195 }
 196
 197 static int
 198 fs_dev_set_link_up(struct rte_eth_dev *dev)
 199 {
 200         struct sub_device *sdev;
 201         uint8_t i;
 202         int ret;
 203
 204         fs_lock(dev, 0);
 205         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
 206                 DEBUG("Calling rte_eth_dev_set_link_up on sub_device %d", i);
 207                 ret = rte_eth_dev_set_link_up(PORT_ID(sdev));
 208                 if ((ret = fs_err(sdev, ret))) {
 209                         ERROR("Operation rte_eth_dev_set_link_up failed for sub_device %d"
 210                               " with error %d", i, ret);
 211                         fs_unlock(dev, 0);
 212                         return ret;
 213                 }
 214         }
 215         fs_unlock(dev, 0);
 216         return 0;
 217 }
 218
 219 static int
 220 fs_dev_set_link_down(struct rte_eth_dev *dev)
 221 {
 222         struct sub_device *sdev;
 223         uint8_t i;
 224         int ret;
 225
 226         fs_lock(dev, 0);
 227         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
 228                 DEBUG("Calling rte_eth_dev_set_link_down on sub_device %d", i);
 229                 ret = rte_eth_dev_set_link_down(PORT_ID(sdev));
 230                 if ((ret = fs_err(sdev, ret))) {
 231                         ERROR("Operation rte_eth_dev_set_link_down failed for sub_device %d"
 232                               " with error %d", i, ret);
 233                         fs_unlock(dev, 0);
 234                         return ret;
 235                 }
 236         }
 237         fs_unlock(dev, 0);
 238         return 0;
 239 }
 240
 241 static void fs_dev_free_queues(struct rte_eth_dev *dev);
 242 static void
 243 fs_dev_close(struct rte_eth_dev *dev)
 244 {
 245         struct sub_device *sdev;
 246         uint8_t i;
 247
 248         fs_lock(dev, 0);
 249         failsafe_hotplug_alarm_cancel(dev);
 250         if (PRIV(dev)->state == DEV_STARTED)
 251                 dev->dev_ops->dev_stop(dev);
 252         PRIV(dev)->state = DEV_ACTIVE - 1;
 253         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
 254                 DEBUG("Closing sub_device %d", i);
 255                 failsafe_eth_dev_unregister_callbacks(sdev);
 256                 rte_eth_dev_close(PORT_ID(sdev));
 257                 sdev->state = DEV_ACTIVE - 1;
 258         }
 259         fs_dev_free_queues(dev);
 260         fs_unlock(dev, 0);
 261 }
 262
 263 static int
 264 fs_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 265 {
 266         struct sub_device *sdev;
 267         uint8_t i;
 268         int ret;
 269         int err = 0;
 270         bool failure = true;
 271
 272         fs_lock(dev, 0);
 273         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
 274                 uint16_t port_id = ETH(sdev)->data->port_id;
 275
 276                 ret = rte_eth_dev_rx_queue_stop(port_id, rx_queue_id);
 277                 ret = fs_err(sdev, ret);
 278                 if (ret) {
 279                         ERROR("Rx queue stop failed for subdevice %d", i);
 280                         err = ret;
 281                 } else {
 282                         failure = false;
 283                 }
 284         }
 285         dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 286         fs_unlock(dev, 0);
 287         /* Return 0 in case of at least one successful queue stop */
 288         return (failure) ? err : 0;
 289 }
 290
 291 static int
 292 fs_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 293 {
 294         struct sub_device *sdev;
 295         uint8_t i;
 296         int ret;
 297
 298         fs_lock(dev, 0);
 299         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
 300                 uint16_t port_id = ETH(sdev)->data->port_id;
 301
 302                 ret = rte_eth_dev_rx_queue_start(port_id, rx_queue_id);
 303                 ret = fs_err(sdev, ret);
 304                 if (ret) {
 305                         ERROR("Rx queue start failed for subdevice %d", i);
 306                         fs_rx_queue_stop(dev, rx_queue_id);
 307                         fs_unlock(dev, 0);
 308                         return ret;
 309                 }
 310         }
 311         dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
 312         fs_unlock(dev, 0);
 313         return 0;
 314 }
 315
 316 static int
 317 fs_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
 318 {
 319         struct sub_device *sdev;
 320         uint8_t i;
 321         int ret;
 322         int err = 0;
 323         bool failure = true;
 324
 325         fs_lock(dev, 0);
 326         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
 327                 uint16_t port_id = ETH(sdev)->data->port_id;
 328
 329                 ret = rte_eth_dev_tx_queue_stop(port_id, tx_queue_id);
 330                 ret = fs_err(sdev, ret);
 331                 if (ret) {
 332                         ERROR("Tx queue stop failed for subdevice %d", i);
 333                         err = ret;
 334                 } else {
 335                         failure = false;
 336                 }
 337         }
 338         dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 339         fs_unlock(dev, 0);
 340         /* Return 0 in case of at least one successful queue stop */
 341         return (failure) ? err : 0;
 342 }
 343
 344 static int
 345 fs_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
 346 {
 347         struct sub_device *sdev;
 348         uint8_t i;
 349         int ret;
 350
 351         fs_lock(dev, 0);
 352         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
 353                 uint16_t port_id = ETH(sdev)->data->port_id;
 354
 355                 ret = rte_eth_dev_tx_queue_start(port_id, tx_queue_id);
 356                 ret = fs_err(sdev, ret);
 357                 if (ret) {
 358                         ERROR("Tx queue start failed for subdevice %d", i);
 359                         fs_tx_queue_stop(dev, tx_queue_id);
 360                         fs_unlock(dev, 0);
 361                         return ret;
 362                 }
 363         }
 364         dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
 365         fs_unlock(dev, 0);
 366         return 0;
 367 }
 368
 369 static void
 370 fs_rx_queue_release(void *queue)
 371 {
 372         struct rte_eth_dev *dev;
 373         struct sub_device *sdev;
 374         uint8_t i;
 375         struct rxq *rxq;
 376
 377         if (queue == NULL)
 378                 return;
 379         rxq = queue;
 380         dev = &rte_eth_devices[rxq->priv->data->port_id];
 381         fs_lock(dev, 0);
 382         if (rxq->event_fd > 0)
 383                 close(rxq->event_fd);
 384         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
 385                 if (ETH(sdev)->data->rx_queues != NULL &&
 386                     ETH(sdev)->data->rx_queues[rxq->qid] != NULL) {
 387                         SUBOPS(sdev, rx_queue_release)
 388                                 (ETH(sdev)->data->rx_queues[rxq->qid]);
 389                 }
 390         }
 391         dev->data->rx_queues[rxq->qid] = NULL;
 392         rte_free(rxq);
 393         fs_unlock(dev, 0);
 394 }
 395
 396 static int
 397 fs_rx_queue_setup(struct rte_eth_dev *dev,
 398                 uint16_t rx_queue_id,
 399                 uint16_t nb_rx_desc,
 400                 unsigned int socket_id,
 401                 const struct rte_eth_rxconf *rx_conf,
 402                 struct rte_mempool *mb_pool)
 403 {
 404         /*
 405          * FIXME: Add a proper interface in rte_eal_interrupts for
 406          * allocating eventfd as an interrupt vector.
 407          * For the time being, fake as if we are using MSIX interrupts,
 408          * this will cause rte_intr_efd_enable to allocate an eventfd for us.
 409          */
 410         struct rte_intr_handle intr_handle = {
 411                 .type = RTE_INTR_HANDLE_VFIO_MSIX,
 412                 .efds = { -1, },
 413         };
 414         struct sub_device *sdev;
 415         struct rxq *rxq;
 416         uint8_t i;
 417         int ret;
 418
 419         fs_lock(dev, 0);
 420         if (rx_conf->rx_deferred_start) {
 421                 FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_PROBED) {
 422                         if (SUBOPS(sdev, rx_queue_start) == NULL) {
 423                                 ERROR("Rx queue deferred start is not "
 424                                         "supported for subdevice %d", i);
 425                                 fs_unlock(dev, 0);
 426                                 return -EINVAL;
 427                         }
 428                 }
 429         }
 430         rxq = dev->data->rx_queues[rx_queue_id];
 431         if (rxq != NULL) {
 432                 fs_rx_queue_release(rxq);
 433                 dev->data->rx_queues[rx_queue_id] = NULL;
 434         }
 435         rxq = rte_zmalloc(NULL,
 436                           sizeof(*rxq) +
 437                           sizeof(rte_atomic64_t) * PRIV(dev)->subs_tail,
 438                           RTE_CACHE_LINE_SIZE);
 439         if (rxq == NULL) {
 440                 fs_unlock(dev, 0);
 441                 return -ENOMEM;
 442         }
 443         FOREACH_SUBDEV(sdev, i, dev)
 444                 rte_atomic64_init(&rxq->refcnt[i]);
 445         rxq->qid = rx_queue_id;
 446         rxq->socket_id = socket_id;
 447         rxq->info.mp = mb_pool;
 448         rxq->info.conf = *rx_conf;
 449         rxq->info.nb_desc = nb_rx_desc;
 450         rxq->priv = PRIV(dev);
 451         rxq->sdev = PRIV(dev)->subs;
 452         ret = rte_intr_efd_enable(&intr_handle, 1);
 453         if (ret < 0) {
 454                 fs_unlock(dev, 0);
 455                 return ret;
 456         }
 457         rxq->event_fd = intr_handle.efds[0];
 458         dev->data->rx_queues[rx_queue_id] = rxq;
 459         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
 460                 ret = rte_eth_rx_queue_setup(PORT_ID(sdev),
 461                                 rx_queue_id,
 462                                 nb_rx_desc, socket_id,
 463                                 rx_conf, mb_pool);
 464                 if ((ret = fs_err(sdev, ret))) {
 465                         ERROR("RX queue setup failed for sub_device %d", i);
 466                         goto free_rxq;
 467                 }
 468         }
 469         fs_unlock(dev, 0);
 470         return 0;
 471 free_rxq:
 472         fs_rx_queue_release(rxq);
 473         fs_unlock(dev, 0);
 474         return ret;
 475 }
 476
 477 static int
 478 fs_rx_intr_enable(struct rte_eth_dev *dev, uint16_t idx)
 479 {
 480         struct rxq *rxq;
 481         struct sub_device *sdev;
 482         uint8_t i;
 483         int ret;
 484         int rc = 0;
 485
 486         fs_lock(dev, 0);
 487         if (idx >= dev->data->nb_rx_queues) {
 488                 rc = -EINVAL;
 489                 goto unlock;
 490         }
 491         rxq = dev->data->rx_queues[idx];
 492         if (rxq == NULL || rxq->event_fd <= 0) {
 493                 rc = -EINVAL;
 494                 goto unlock;
 495         }
 496         /* Fail if proxy service is nor running. */
 497         if (PRIV(dev)->rxp.sstate != SS_RUNNING) {
 498                 ERROR("failsafe interrupt services are not running");
 499                 rc = -EAGAIN;
 500                 goto unlock;
 501         }
 502         rxq->enable_events = 1;
 503         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
 504                 ret = rte_eth_dev_rx_intr_enable(PORT_ID(sdev), idx);
 505                 ret = fs_err(sdev, ret);
 506                 if (ret)
 507                         rc = ret;
 508         }
 509 unlock:
 510         fs_unlock(dev, 0);
 511         if (rc)
 512                 rte_errno = -rc;
 513         return rc;
 514 }
 515
 516 static int
 517 fs_rx_intr_disable(struct rte_eth_dev *dev, uint16_t idx)
 518 {
 519         struct rxq *rxq;
 520         struct sub_device *sdev;
 521         uint64_t u64;
 522         uint8_t i;
 523         int rc = 0;
 524         int ret;
 525
 526         fs_lock(dev, 0);
 527         if (idx >= dev->data->nb_rx_queues) {
 528                 rc = -EINVAL;
 529                 goto unlock;
 530         }
 531         rxq = dev->data->rx_queues[idx];
 532         if (rxq == NULL || rxq->event_fd <= 0) {
 533                 rc = -EINVAL;
 534                 goto unlock;
 535         }
 536         rxq->enable_events = 0;
 537         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
 538                 ret = rte_eth_dev_rx_intr_disable(PORT_ID(sdev), idx);
 539                 ret = fs_err(sdev, ret);
 540                 if (ret)
 541                         rc = ret;
 542         }
 543         /* Clear pending events */
 544         while (read(rxq->event_fd, &u64, sizeof(uint64_t)) >  0)
 545                 ;
 546 unlock:
 547         fs_unlock(dev, 0);
 548         if (rc)
 549                 rte_errno = -rc;
 550         return rc;
 551 }
 552
 553 static void
 554 fs_tx_queue_release(void *queue)
 555 {
 556         struct rte_eth_dev *dev;
 557         struct sub_device *sdev;
 558         uint8_t i;
 559         struct txq *txq;
 560
 561         if (queue == NULL)
 562                 return;
 563         txq = queue;
 564         dev = &rte_eth_devices[txq->priv->data->port_id];
 565         fs_lock(dev, 0);
 566         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
 567                 if (ETH(sdev)->data->tx_queues != NULL &&
 568                     ETH(sdev)->data->tx_queues[txq->qid] != NULL) {
 569                         SUBOPS(sdev, tx_queue_release)
 570                                 (ETH(sdev)->data->tx_queues[txq->qid]);
 571                 }
 572         }
 573         dev->data->tx_queues[txq->qid] = NULL;
 574         rte_free(txq);
 575         fs_unlock(dev, 0);
 576 }
 577
 578 static int
 579 fs_tx_queue_setup(struct rte_eth_dev *dev,
 580                 uint16_t tx_queue_id,
 581                 uint16_t nb_tx_desc,
 582                 unsigned int socket_id,
 583                 const struct rte_eth_txconf *tx_conf)
 584 {
 585         struct sub_device *sdev;
 586         struct txq *txq;
 587         uint8_t i;
 588         int ret;
 589
 590         fs_lock(dev, 0);
 591         if (tx_conf->tx_deferred_start) {
 592                 FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_PROBED) {
 593                         if (SUBOPS(sdev, tx_queue_start) == NULL) {
 594                                 ERROR("Tx queue deferred start is not "
 595                                         "supported for subdevice %d", i);
 596                                 fs_unlock(dev, 0);
 597                                 return -EINVAL;
 598                         }
 599                 }
 600         }
 601         txq = dev->data->tx_queues[tx_queue_id];
 602         if (txq != NULL) {
 603                 fs_tx_queue_release(txq);
 604                 dev->data->tx_queues[tx_queue_id] = NULL;
 605         }
 606         txq = rte_zmalloc("ethdev TX queue",
 607                           sizeof(*txq) +
 608                           sizeof(rte_atomic64_t) * PRIV(dev)->subs_tail,
 609                           RTE_CACHE_LINE_SIZE);
 610         if (txq == NULL) {
 611                 fs_unlock(dev, 0);
 612                 return -ENOMEM;
 613         }
 614         FOREACH_SUBDEV(sdev, i, dev)
 615                 rte_atomic64_init(&txq->refcnt[i]);
 616         txq->qid = tx_queue_id;
 617         txq->socket_id = socket_id;
 618         txq->info.conf = *tx_conf;
 619         txq->info.nb_desc = nb_tx_desc;
 620         txq->priv = PRIV(dev);
 621         dev->data->tx_queues[tx_queue_id] = txq;
 622         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
 623                 ret = rte_eth_tx_queue_setup(PORT_ID(sdev),
 624                                 tx_queue_id,
 625                                 nb_tx_desc, socket_id,
 626                                 tx_conf);
 627                 if ((ret = fs_err(sdev, ret))) {
 628                         ERROR("TX queue setup failed for sub_device %d", i);
 629                         goto free_txq;
 630                 }
 631         }
 632         fs_unlock(dev, 0);
 633         return 0;
 634 free_txq:
 635         fs_tx_queue_release(txq);
 636         fs_unlock(dev, 0);
 637         return ret;
 638 }
 639
 640 static void
 641 fs_dev_free_queues(struct rte_eth_dev *dev)
 642 {
 643         uint16_t i;
 644
 645         for (i = 0; i < dev->data->nb_rx_queues; i++) {
 646                 fs_rx_queue_release(dev->data->rx_queues[i]);
 647                 dev->data->rx_queues[i] = NULL;
 648         }
 649         dev->data->nb_rx_queues = 0;
 650         for (i = 0; i < dev->data->nb_tx_queues; i++) {
 651                 fs_tx_queue_release(dev->data->tx_queues[i]);
 652                 dev->data->tx_queues[i] = NULL;
 653         }
 654         dev->data->nb_tx_queues = 0;
 655 }
 656
 657 static int
 658 fs_promiscuous_enable(struct rte_eth_dev *dev)
 659 {
 660         struct sub_device *sdev;
 661         uint8_t i;
 662         int ret = 0;
 663
 664         fs_lock(dev, 0);
 665         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
 666                 ret = rte_eth_promiscuous_enable(PORT_ID(sdev));
 667                 ret = fs_err(sdev, ret);
 668                 if (ret != 0) {
 669                         ERROR("Promiscuous mode enable failed for subdevice %d",
 670                                 PORT_ID(sdev));
 671                         break;
 672                 }
 673         }
 674         if (ret != 0) {
 675                 /* Rollback in the case of failure */
 676                 FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
 677                         ret = rte_eth_promiscuous_disable(PORT_ID(sdev));
 678                         ret = fs_err(sdev, ret);
 679                         if (ret != 0)
 680                                 ERROR("Promiscuous mode disable during rollback failed for subdevice %d",
 681                                         PORT_ID(sdev));
 682                 }
 683         }
 684         fs_unlock(dev, 0);
 685
 686         return ret;
 687 }
 688
 689 static int
 690 fs_promiscuous_disable(struct rte_eth_dev *dev)
 691 {
 692         struct sub_device *sdev;
 693         uint8_t i;
 694         int ret = 0;
 695
 696         fs_lock(dev, 0);
 697         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
 698                 ret = rte_eth_promiscuous_disable(PORT_ID(sdev));
 699                 ret = fs_err(sdev, ret);
 700                 if (ret != 0) {
 701                         ERROR("Promiscuous mode disable failed for subdevice %d",
 702                                 PORT_ID(sdev));
 703                         break;
 704                 }
 705         }
 706         if (ret != 0) {
 707                 /* Rollback in the case of failure */
 708                 FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
 709                         ret = rte_eth_promiscuous_enable(PORT_ID(sdev));
 710                         ret = fs_err(sdev, ret);
 711                         if (ret != 0)
 712                                 ERROR("Promiscuous mode enable during rollback failed for subdevice %d",
 713                                         PORT_ID(sdev));
 714                 }
 715         }
 716         fs_unlock(dev, 0);
 717
 718         return ret;
 719 }
 720
 721 static void
 722 fs_allmulticast_enable(struct rte_eth_dev *dev)
 723 {
 724         struct sub_device *sdev;
 725         uint8_t i;
 726
 727         fs_lock(dev, 0);
 728         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE)
 729                 rte_eth_allmulticast_enable(PORT_ID(sdev));
 730         fs_unlock(dev, 0);
 731 }
 732
 733 static void
 734 fs_allmulticast_disable(struct rte_eth_dev *dev)
 735 {
 736         struct sub_device *sdev;
 737         uint8_t i;
 738
 739         fs_lock(dev, 0);
 740         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE)
 741                 rte_eth_allmulticast_disable(PORT_ID(sdev));
 742         fs_unlock(dev, 0);
 743 }
 744
 745 static int
 746 fs_link_update(struct rte_eth_dev *dev,
 747                 int wait_to_complete)
 748 {
 749         struct sub_device *sdev;
 750         uint8_t i;
 751         int ret;
 752
 753         fs_lock(dev, 0);
 754         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
 755                 DEBUG("Calling link_update on sub_device %d", i);
 756                 ret = (SUBOPS(sdev, link_update))(ETH(sdev), wait_to_complete);
 757                 if (ret && ret != -1 && sdev->remove == 0 &&
 758                     rte_eth_dev_is_removed(PORT_ID(sdev)) == 0) {
 759                         ERROR("Link update failed for sub_device %d with error %d",
 760                               i, ret);
 761                         fs_unlock(dev, 0);
 762                         return ret;
 763                 }
 764         }
 765         if (TX_SUBDEV(dev)) {
 766                 struct rte_eth_link *l1;
 767                 struct rte_eth_link *l2;
 768
 769                 l1 = &dev->data->dev_link;
 770                 l2 = &ETH(TX_SUBDEV(dev))->data->dev_link;
 771                 if (memcmp(l1, l2, sizeof(*l1))) {
 772                         *l1 = *l2;
 773                         fs_unlock(dev, 0);
 774                         return 0;
 775                 }
 776         }
 777         fs_unlock(dev, 0);
 778         return -1;
 779 }
 780
 781 static int
 782 fs_stats_get(struct rte_eth_dev *dev,
 783              struct rte_eth_stats *stats)
 784 {
 785         struct rte_eth_stats backup;
 786         struct sub_device *sdev;
 787         uint8_t i;
 788         int ret;
 789
 790         fs_lock(dev, 0);
 791         rte_memcpy(stats, &PRIV(dev)->stats_accumulator, sizeof(*stats));
 792         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
 793                 struct rte_eth_stats *snapshot = &sdev->stats_snapshot.stats;
 794                 uint64_t *timestamp = &sdev->stats_snapshot.timestamp;
 795
 796                 rte_memcpy(&backup, snapshot, sizeof(backup));
 797                 ret = rte_eth_stats_get(PORT_ID(sdev), snapshot);
 798                 if (ret) {
 799                         if (!fs_err(sdev, ret)) {
 800                                 rte_memcpy(snapshot, &backup, sizeof(backup));
 801                                 goto inc;
 802                         }
 803                         ERROR("Operation rte_eth_stats_get failed for sub_device %d with error %d",
 804                                   i, ret);
 805                         *timestamp = 0;
 806                         fs_unlock(dev, 0);
 807                         return ret;
 808                 }
 809                 *timestamp = rte_rdtsc();
 810 inc:
 811                 failsafe_stats_increment(stats, snapshot);
 812         }
 813         fs_unlock(dev, 0);
 814         return 0;
 815 }
 816
 817 static void
 818 fs_stats_reset(struct rte_eth_dev *dev)
 819 {
 820         struct sub_device *sdev;
 821         uint8_t i;
 822
 823         fs_lock(dev, 0);
 824         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
 825                 rte_eth_stats_reset(PORT_ID(sdev));
 826                 memset(&sdev->stats_snapshot, 0, sizeof(struct rte_eth_stats));
 827         }
 828         memset(&PRIV(dev)->stats_accumulator, 0, sizeof(struct rte_eth_stats));
 829         fs_unlock(dev, 0);
 830 }
 831
 832 static void
 833 fs_dev_merge_desc_lim(struct rte_eth_desc_lim *to,
 834                       const struct rte_eth_desc_lim *from)
 835 {
 836         to->nb_max = RTE_MIN(to->nb_max, from->nb_max);
 837         to->nb_min = RTE_MAX(to->nb_min, from->nb_min);
 838         to->nb_align = RTE_MAX(to->nb_align, from->nb_align);
 839
 840         to->nb_seg_max = RTE_MIN(to->nb_seg_max, from->nb_seg_max);
 841         to->nb_mtu_seg_max = RTE_MIN(to->nb_mtu_seg_max, from->nb_mtu_seg_max);
 842 }
 843
 844 /*
 845  * Merge the information from sub-devices.
 846  *
 847  * The reported values must be the common subset of all sub devices
 848  */
 849 static void
 850 fs_dev_merge_info(struct rte_eth_dev_info *info,
 851                   const struct rte_eth_dev_info *sinfo)
 852 {
 853         info->max_rx_pktlen = RTE_MIN(info->max_rx_pktlen, sinfo->max_rx_pktlen);
 854         info->max_rx_queues = RTE_MIN(info->max_rx_queues, sinfo->max_rx_queues);
 855         info->max_tx_queues = RTE_MIN(info->max_tx_queues, sinfo->max_tx_queues);
 856         info->max_mac_addrs = RTE_MIN(info->max_mac_addrs, sinfo->max_mac_addrs);
 857         info->max_hash_mac_addrs = RTE_MIN(info->max_hash_mac_addrs,
 858                                         sinfo->max_hash_mac_addrs);
 859         info->max_vmdq_pools = RTE_MIN(info->max_vmdq_pools, sinfo->max_vmdq_pools);
 860         info->max_vfs = RTE_MIN(info->max_vfs, sinfo->max_vfs);
 861
 862         fs_dev_merge_desc_lim(&info->rx_desc_lim, &sinfo->rx_desc_lim);
 863         fs_dev_merge_desc_lim(&info->tx_desc_lim, &sinfo->tx_desc_lim);
 864
 865         info->rx_offload_capa &= sinfo->rx_offload_capa;
 866         info->tx_offload_capa &= sinfo->tx_offload_capa;
 867         info->rx_queue_offload_capa &= sinfo->rx_queue_offload_capa;
 868         info->tx_queue_offload_capa &= sinfo->tx_queue_offload_capa;
 869         info->flow_type_rss_offloads &= sinfo->flow_type_rss_offloads;
 870 }
 871
 872 /**
 873  * Fail-safe dev_infos_get rules:
 874  *
 875  * No sub_device:
 876  *   Numerables:
 877  *      Use the maximum possible values for any field, so as not
 878  *      to impede any further configuration effort.
 879  *   Capabilities:
 880  *      Limits capabilities to those that are understood by the
 881  *      fail-safe PMD. This understanding stems from the fail-safe
 882  *      being capable of verifying that the related capability is
 883  *      expressed within the device configuration (struct rte_eth_conf).
 884  *
 885  * At least one probed sub_device:
 886  *   Numerables:
 887  *      Uses values from the active probed sub_device
 888  *      The rationale here is that if any sub_device is less capable
 889  *      (for example concerning the number of queues) than the active
 890  *      sub_device, then its subsequent configuration will fail.
 891  *      It is impossible to foresee this failure when the failing sub_device
 892  *      is supposed to be plugged-in later on, so the configuration process
 893  *      is the single point of failure and error reporting.
 894  *   Capabilities:
 895  *      Uses a logical AND of RX capabilities among
 896  *      all sub_devices and the default capabilities.
 897  *      Uses a logical AND of TX capabilities among
 898  *      the active probed sub_device and the default capabilities.
 899  *      Uses a logical AND of device capabilities among
 900  *      all sub_devices and the default capabilities.
 901  *
 902  */
 903 static int
 904 fs_dev_infos_get(struct rte_eth_dev *dev,
 905                   struct rte_eth_dev_info *infos)
 906 {
 907         struct sub_device *sdev;
 908         uint8_t i;
 909         int ret;
 910
 911         /* Use maximum upper bounds by default */
 912         infos->max_rx_pktlen = UINT32_MAX;
 913         infos->max_rx_queues = RTE_MAX_QUEUES_PER_PORT;
 914         infos->max_tx_queues = RTE_MAX_QUEUES_PER_PORT;
 915         infos->max_mac_addrs = FAILSAFE_MAX_ETHADDR;
 916         infos->max_hash_mac_addrs = UINT32_MAX;
 917         infos->max_vfs = UINT16_MAX;
 918         infos->max_vmdq_pools = UINT16_MAX;
 919
 920         /*
 921          * Set of capabilities that can be verified upon
 922          * configuring a sub-device.
 923          */
 924         infos->rx_offload_capa =
 925                 DEV_RX_OFFLOAD_VLAN_STRIP |
 926                 DEV_RX_OFFLOAD_IPV4_CKSUM |
 927                 DEV_RX_OFFLOAD_UDP_CKSUM |
 928                 DEV_RX_OFFLOAD_TCP_CKSUM |
 929                 DEV_RX_OFFLOAD_TCP_LRO |
 930                 DEV_RX_OFFLOAD_QINQ_STRIP |
 931                 DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM |
 932                 DEV_RX_OFFLOAD_MACSEC_STRIP |
 933                 DEV_RX_OFFLOAD_HEADER_SPLIT |
 934                 DEV_RX_OFFLOAD_VLAN_FILTER |
 935                 DEV_RX_OFFLOAD_VLAN_EXTEND |
 936                 DEV_RX_OFFLOAD_JUMBO_FRAME |
 937                 DEV_RX_OFFLOAD_SCATTER |
 938                 DEV_RX_OFFLOAD_TIMESTAMP |
 939                 DEV_RX_OFFLOAD_SECURITY;
 940
 941         infos->rx_queue_offload_capa =
 942                 DEV_RX_OFFLOAD_VLAN_STRIP |
 943                 DEV_RX_OFFLOAD_IPV4_CKSUM |
 944                 DEV_RX_OFFLOAD_UDP_CKSUM |
 945                 DEV_RX_OFFLOAD_TCP_CKSUM |
 946                 DEV_RX_OFFLOAD_TCP_LRO |
 947                 DEV_RX_OFFLOAD_QINQ_STRIP |
 948                 DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM |
 949                 DEV_RX_OFFLOAD_MACSEC_STRIP |
 950                 DEV_RX_OFFLOAD_HEADER_SPLIT |
 951                 DEV_RX_OFFLOAD_VLAN_FILTER |
 952                 DEV_RX_OFFLOAD_VLAN_EXTEND |
 953                 DEV_RX_OFFLOAD_JUMBO_FRAME |
 954                 DEV_RX_OFFLOAD_SCATTER |
 955                 DEV_RX_OFFLOAD_TIMESTAMP |
 956                 DEV_RX_OFFLOAD_SECURITY;
 957
 958         infos->tx_offload_capa =
 959                 DEV_TX_OFFLOAD_MULTI_SEGS |
 960                 DEV_TX_OFFLOAD_MBUF_FAST_FREE |
 961                 DEV_TX_OFFLOAD_IPV4_CKSUM |
 962                 DEV_TX_OFFLOAD_UDP_CKSUM |
 963                 DEV_TX_OFFLOAD_TCP_CKSUM |
 964                 DEV_TX_OFFLOAD_TCP_TSO;
 965
 966         infos->flow_type_rss_offloads =
 967                 ETH_RSS_IP |
 968                 ETH_RSS_UDP |
 969                 ETH_RSS_TCP;
 970         infos->dev_capa =
 971                 RTE_ETH_DEV_CAPA_RUNTIME_RX_QUEUE_SETUP |
 972                 RTE_ETH_DEV_CAPA_RUNTIME_TX_QUEUE_SETUP;
 973
 974         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_PROBED) {
 975                 struct rte_eth_dev_info sub_info;
 976
 977                 ret = rte_eth_dev_info_get(PORT_ID(sdev), &sub_info);
 978                 ret = fs_err(sdev, ret);
 979                 if (ret != 0)
 980                         return ret;
 981
 982                 fs_dev_merge_info(infos, &sub_info);
 983         }
 984
 985         return 0;
 986 }
 987
 988 static const uint32_t *
 989 fs_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 990 {
 991         struct sub_device *sdev;
 992         struct rte_eth_dev *edev;
 993         const uint32_t *ret;
 994
 995         fs_lock(dev, 0);
 996         sdev = TX_SUBDEV(dev);
 997         if (sdev == NULL) {
 998                 ret = NULL;
 999                 goto unlock;
1000         }
1001         edev = ETH(sdev);
1002         /* ENOTSUP: counts as no supported ptypes */
1003         if (SUBOPS(sdev, dev_supported_ptypes_get) == NULL) {
1004                 ret = NULL;
1005                 goto unlock;
1006         }
1007         /*
1008          * The API does not permit to do a clean AND of all ptypes,
1009          * It is also incomplete by design and we do not really care
1010          * to have a best possible value in this context.
1011          * We just return the ptypes of the device of highest
1012          * priority, usually the PREFERRED device.
1013          */
1014         ret = SUBOPS(sdev, dev_supported_ptypes_get)(edev);
1015 unlock:
1016         fs_unlock(dev, 0);
1017         return ret;
1018 }
1019
1020 static int
1021 fs_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
1022 {
1023         struct sub_device *sdev;
1024         uint8_t i;
1025         int ret;
1026
1027         fs_lock(dev, 0);
1028         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
1029                 DEBUG("Calling rte_eth_dev_set_mtu on sub_device %d", i);
1030                 ret = rte_eth_dev_set_mtu(PORT_ID(sdev), mtu);
1031                 if ((ret = fs_err(sdev, ret))) {
1032                         ERROR("Operation rte_eth_dev_set_mtu failed for sub_device %d with error %d",
1033                               i, ret);
1034                         fs_unlock(dev, 0);
1035                         return ret;
1036                 }
1037         }
1038         fs_unlock(dev, 0);
1039         return 0;
1040 }
1041
1042 static int
1043 fs_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
1044 {
1045         struct sub_device *sdev;
1046         uint8_t i;
1047         int ret;
1048
1049         fs_lock(dev, 0);
1050         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
1051                 DEBUG("Calling rte_eth_dev_vlan_filter on sub_device %d", i);
1052                 ret = rte_eth_dev_vlan_filter(PORT_ID(sdev), vlan_id, on);
1053                 if ((ret = fs_err(sdev, ret))) {
1054                         ERROR("Operation rte_eth_dev_vlan_filter failed for sub_device %d"
1055                               " with error %d", i, ret);
1056                         fs_unlock(dev, 0);
1057                         return ret;
1058                 }
1059         }
1060         fs_unlock(dev, 0);
1061         return 0;
1062 }
1063
1064 static int
1065 fs_flow_ctrl_get(struct rte_eth_dev *dev,
1066                 struct rte_eth_fc_conf *fc_conf)
1067 {
1068         struct sub_device *sdev;
1069         int ret;
1070
1071         fs_lock(dev, 0);
1072         sdev = TX_SUBDEV(dev);
1073         if (sdev == NULL) {
1074                 ret = 0;
1075                 goto unlock;
1076         }
1077         if (SUBOPS(sdev, flow_ctrl_get) == NULL) {
1078                 ret = -ENOTSUP;
1079                 goto unlock;
1080         }
1081         ret = SUBOPS(sdev, flow_ctrl_get)(ETH(sdev), fc_conf);
1082 unlock:
1083         fs_unlock(dev, 0);
1084         return ret;
1085 }
1086
1087 static int
1088 fs_flow_ctrl_set(struct rte_eth_dev *dev,
1089                 struct rte_eth_fc_conf *fc_conf)
1090 {
1091         struct sub_device *sdev;
1092         uint8_t i;
1093         int ret;
1094
1095         fs_lock(dev, 0);
1096         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
1097                 DEBUG("Calling rte_eth_dev_flow_ctrl_set on sub_device %d", i);
1098                 ret = rte_eth_dev_flow_ctrl_set(PORT_ID(sdev), fc_conf);
1099                 if ((ret = fs_err(sdev, ret))) {
1100                         ERROR("Operation rte_eth_dev_flow_ctrl_set failed for sub_device %d"
1101                               " with error %d", i, ret);
1102                         fs_unlock(dev, 0);
1103                         return ret;
1104                 }
1105         }
1106         fs_unlock(dev, 0);
1107         return 0;
1108 }
1109
1110 static void
1111 fs_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
1112 {
1113         struct sub_device *sdev;
1114         uint8_t i;
1115
1116         fs_lock(dev, 0);
1117         /* No check: already done within the rte_eth_dev_mac_addr_remove
1118          * call for the fail-safe device.
1119          */
1120         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE)
1121                 rte_eth_dev_mac_addr_remove(PORT_ID(sdev),
1122                                 &dev->data->mac_addrs[index]);
1123         PRIV(dev)->mac_addr_pool[index] = 0;
1124         fs_unlock(dev, 0);
1125 }
1126
1127 static int
1128 fs_mac_addr_add(struct rte_eth_dev *dev,
1129                 struct rte_ether_addr *mac_addr,
1130                 uint32_t index,
1131                 uint32_t vmdq)
1132 {
1133         struct sub_device *sdev;
1134         int ret;
1135         uint8_t i;
1136
1137         RTE_ASSERT(index < FAILSAFE_MAX_ETHADDR);
1138         fs_lock(dev, 0);
1139         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
1140                 ret = rte_eth_dev_mac_addr_add(PORT_ID(sdev), mac_addr, vmdq);
1141                 if ((ret = fs_err(sdev, ret))) {
1142                         ERROR("Operation rte_eth_dev_mac_addr_add failed for sub_device %"
1143                               PRIu8 " with error %d", i, ret);
1144                         fs_unlock(dev, 0);
1145                         return ret;
1146                 }
1147         }
1148         if (index >= PRIV(dev)->nb_mac_addr) {
1149                 DEBUG("Growing mac_addrs array");
1150                 PRIV(dev)->nb_mac_addr = index;
1151         }
1152         PRIV(dev)->mac_addr_pool[index] = vmdq;
1153         fs_unlock(dev, 0);
1154         return 0;
1155 }
1156
1157 static int
1158 fs_mac_addr_set(struct rte_eth_dev *dev, struct rte_ether_addr *mac_addr)
1159 {
1160         struct sub_device *sdev;
1161         uint8_t i;
1162         int ret;
1163
1164         fs_lock(dev, 0);
1165         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
1166                 ret = rte_eth_dev_default_mac_addr_set(PORT_ID(sdev), mac_addr);
1167                 ret = fs_err(sdev, ret);
1168                 if (ret) {
1169                         ERROR("Operation rte_eth_dev_mac_addr_set failed for sub_device %d with error %d",
1170                                 i, ret);
1171                         fs_unlock(dev, 0);
1172                         return ret;
1173                 }
1174         }
1175         fs_unlock(dev, 0);
1176
1177         return 0;
1178 }
1179
1180 static int
1181 fs_set_mc_addr_list(struct rte_eth_dev *dev,
1182                     struct rte_ether_addr *mc_addr_set, uint32_t nb_mc_addr)
1183 {
1184         struct sub_device *sdev;
1185         uint8_t i;
1186         int ret;
1187         void *mcast_addrs;
1188
1189         fs_lock(dev, 0);
1190
1191         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
1192                 ret = rte_eth_dev_set_mc_addr_list(PORT_ID(sdev),
1193                                                    mc_addr_set, nb_mc_addr);
1194                 if (ret != 0) {
1195                         ERROR("Operation rte_eth_dev_set_mc_addr_list failed for sub_device %d with error %d",
1196                               i, ret);
1197                         goto rollback;
1198                 }
1199         }
1200
1201         mcast_addrs = rte_realloc(PRIV(dev)->mcast_addrs,
1202                 nb_mc_addr * sizeof(PRIV(dev)->mcast_addrs[0]), 0);
1203         if (mcast_addrs == NULL && nb_mc_addr > 0) {
1204                 ret = -ENOMEM;
1205                 goto rollback;
1206         }
1207         rte_memcpy(mcast_addrs, mc_addr_set,
1208                    nb_mc_addr * sizeof(PRIV(dev)->mcast_addrs[0]));
1209         PRIV(dev)->nb_mcast_addr = nb_mc_addr;
1210         PRIV(dev)->mcast_addrs = mcast_addrs;
1211
1212         fs_unlock(dev, 0);
1213         return 0;
1214
1215 rollback:
1216         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
1217                 int rc = rte_eth_dev_set_mc_addr_list(PORT_ID(sdev),
1218                         PRIV(dev)->mcast_addrs, PRIV(dev)->nb_mcast_addr);
1219                 if (rc != 0) {
1220                         ERROR("Multicast MAC address list rollback for sub_device %d failed with error %d",
1221                               i, rc);
1222                 }
1223         }
1224
1225         fs_unlock(dev, 0);
1226         return ret;
1227 }
1228
1229 static int
1230 fs_rss_hash_update(struct rte_eth_dev *dev,
1231                         struct rte_eth_rss_conf *rss_conf)
1232 {
1233         struct sub_device *sdev;
1234         uint8_t i;
1235         int ret;
1236
1237         fs_lock(dev, 0);
1238         FOREACH_SUBDEV_STATE(sdev, i, dev, DEV_ACTIVE) {
1239                 ret = rte_eth_dev_rss_hash_update(PORT_ID(sdev), rss_conf);
1240                 ret = fs_err(sdev, ret);
1241                 if (ret) {
1242                         ERROR("Operation rte_eth_dev_rss_hash_update"
1243                                 " failed for sub_device %d with error %d",
1244                                 i, ret);
1245                         fs_unlock(dev, 0);
1246                         return ret;
1247                 }
1248         }
1249         fs_unlock(dev, 0);
1250
1251         return 0;
1252 }
1253
1254 static int
1255 fs_filter_ctrl(struct rte_eth_dev *dev __rte_unused,
1256                 enum rte_filter_type type,
1257                 enum rte_filter_op op,
1258                 void *arg)
1259 {
1260         if (type == RTE_ETH_FILTER_GENERIC &&
1261             op == RTE_ETH_FILTER_GET) {
1262                 *(const void **)arg = &fs_flow_ops;
1263                 return 0;
1264         }
1265         return -ENOTSUP;
1266 }
1267
1268 const struct eth_dev_ops failsafe_ops = {
1269         .dev_configure = fs_dev_configure,
1270         .dev_start = fs_dev_start,
1271         .dev_stop = fs_dev_stop,
1272         .dev_set_link_down = fs_dev_set_link_down,
1273         .dev_set_link_up = fs_dev_set_link_up,
1274         .dev_close = fs_dev_close,
1275         .promiscuous_enable = fs_promiscuous_enable,
1276         .promiscuous_disable = fs_promiscuous_disable,
1277         .allmulticast_enable = fs_allmulticast_enable,
1278         .allmulticast_disable = fs_allmulticast_disable,
1279         .link_update = fs_link_update,
1280         .stats_get = fs_stats_get,
1281         .stats_reset = fs_stats_reset,
1282         .dev_infos_get = fs_dev_infos_get,
1283         .dev_supported_ptypes_get = fs_dev_supported_ptypes_get,
1284         .mtu_set = fs_mtu_set,
1285         .vlan_filter_set = fs_vlan_filter_set,
1286         .rx_queue_start = fs_rx_queue_start,
1287         .rx_queue_stop = fs_rx_queue_stop,
1288         .tx_queue_start = fs_tx_queue_start,
1289         .tx_queue_stop = fs_tx_queue_stop,
1290         .rx_queue_setup = fs_rx_queue_setup,
1291         .tx_queue_setup = fs_tx_queue_setup,
1292         .rx_queue_release = fs_rx_queue_release,
1293         .tx_queue_release = fs_tx_queue_release,
1294         .rx_queue_intr_enable = fs_rx_intr_enable,
1295         .rx_queue_intr_disable = fs_rx_intr_disable,
1296         .flow_ctrl_get = fs_flow_ctrl_get,
1297         .flow_ctrl_set = fs_flow_ctrl_set,
1298         .mac_addr_remove = fs_mac_addr_remove,
1299         .mac_addr_add = fs_mac_addr_add,
1300         .mac_addr_set = fs_mac_addr_set,
1301         .set_mc_addr_list = fs_set_mc_addr_list,
1302         .rss_hash_update = fs_rss_hash_update,
1303         .filter_ctrl = fs_filter_ctrl,
1304 };