drivers/net/sfc/sfc_ethdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  * Copyright (c) 2016-2018 Solarflare Communications Inc.
   4  * All rights reserved.
   5  *
   6  * This software was jointly developed between OKTET Labs (under contract
   7  * for Solarflare) and Solarflare Communications, Inc.
   8  */
   9
  10 #include <rte_dev.h>
  11 #include <rte_ethdev_driver.h>
  12 #include <rte_ethdev_pci.h>
  13 #include <rte_pci.h>
  14 #include <rte_bus_pci.h>
  15 #include <rte_errno.h>
  16
  17 #include "efx.h"
  18
  19 #include "sfc.h"
  20 #include "sfc_debug.h"
  21 #include "sfc_log.h"
  22 #include "sfc_kvargs.h"
  23 #include "sfc_ev.h"
  24 #include "sfc_rx.h"
  25 #include "sfc_tx.h"
  26 #include "sfc_flow.h"
  27 #include "sfc_dp.h"
  28 #include "sfc_dp_rx.h"
  29
  30 static struct sfc_dp_list sfc_dp_head =
  31         TAILQ_HEAD_INITIALIZER(sfc_dp_head);
  32
  33 static int
  34 sfc_fw_version_get(struct rte_eth_dev *dev, char *fw_version, size_t fw_size)
  35 {
  36         struct sfc_adapter *sa = dev->data->dev_private;
  37         efx_nic_fw_info_t enfi;
  38         int ret;
  39         int rc;
  40
  41         /*
  42          * Return value of the callback is likely supposed to be
  43          * equal to or greater than 0, nevertheless, if an error
  44          * occurs, it will be desirable to pass it to the caller
  45          */
  46         if ((fw_version == NULL) || (fw_size == 0))
  47                 return -EINVAL;
  48
  49         rc = efx_nic_get_fw_version(sa->nic, &enfi);
  50         if (rc != 0)
  51                 return -rc;
  52
  53         ret = snprintf(fw_version, fw_size,
  54                        "%" PRIu16 ".%" PRIu16 ".%" PRIu16 ".%" PRIu16,
  55                        enfi.enfi_mc_fw_version[0], enfi.enfi_mc_fw_version[1],
  56                        enfi.enfi_mc_fw_version[2], enfi.enfi_mc_fw_version[3]);
  57         if (ret < 0)
  58                 return ret;
  59
  60         if (enfi.enfi_dpcpu_fw_ids_valid) {
  61                 size_t dpcpu_fw_ids_offset = MIN(fw_size - 1, (size_t)ret);
  62                 int ret_extra;
  63
  64                 ret_extra = snprintf(fw_version + dpcpu_fw_ids_offset,
  65                                      fw_size - dpcpu_fw_ids_offset,
  66                                      " rx%" PRIx16 " tx%" PRIx16,
  67                                      enfi.enfi_rx_dpcpu_fw_id,
  68                                      enfi.enfi_tx_dpcpu_fw_id);
  69                 if (ret_extra < 0)
  70                         return ret_extra;
  71
  72                 ret += ret_extra;
  73         }
  74
  75         if (fw_size < (size_t)(++ret))
  76                 return ret;
  77         else
  78                 return 0;
  79 }
  80
  81 static void
  82 sfc_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
  83 {
  84         struct sfc_adapter *sa = dev->data->dev_private;
  85         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
  86         uint64_t txq_offloads_def = 0;
  87
  88         sfc_log_init(sa, "entry");
  89
  90         dev_info->pci_dev = RTE_ETH_DEV_TO_PCI(dev);
  91         dev_info->max_rx_pktlen = EFX_MAC_PDU_MAX;
  92
  93         /* Autonegotiation may be disabled */
  94         dev_info->speed_capa = ETH_LINK_SPEED_FIXED;
  95         if (sa->port.phy_adv_cap_mask & EFX_PHY_CAP_1000FDX)
  96                 dev_info->speed_capa |= ETH_LINK_SPEED_1G;
  97         if (sa->port.phy_adv_cap_mask & EFX_PHY_CAP_10000FDX)
  98                 dev_info->speed_capa |= ETH_LINK_SPEED_10G;
  99         if (sa->port.phy_adv_cap_mask & EFX_PHY_CAP_40000FDX)
 100                 dev_info->speed_capa |= ETH_LINK_SPEED_40G;
 101
 102         dev_info->max_rx_queues = sa->rxq_max;
 103         dev_info->max_tx_queues = sa->txq_max;
 104
 105         /* By default packets are dropped if no descriptors are available */
 106         dev_info->default_rxconf.rx_drop_en = 1;
 107
 108         dev_info->rx_queue_offload_capa = sfc_rx_get_queue_offload_caps(sa);
 109
 110         /*
 111          * rx_offload_capa includes both device and queue offloads since
 112          * the latter may be requested on a per device basis which makes
 113          * sense when some offloads are needed to be set on all queues.
 114          */
 115         dev_info->rx_offload_capa = sfc_rx_get_dev_offload_caps(sa) |
 116                                     dev_info->rx_queue_offload_capa;
 117
 118         dev_info->tx_queue_offload_capa = sfc_tx_get_queue_offload_caps(sa);
 119
 120         /*
 121          * tx_offload_capa includes both device and queue offloads since
 122          * the latter may be requested on a per device basis which makes
 123          * sense when some offloads are needed to be set on all queues.
 124          */
 125         dev_info->tx_offload_capa = sfc_tx_get_dev_offload_caps(sa) |
 126                                     dev_info->tx_queue_offload_capa;
 127
 128         if (dev_info->tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 129                 txq_offloads_def |= DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 130
 131         dev_info->default_txconf.offloads |= txq_offloads_def;
 132
 133         dev_info->default_txconf.txq_flags = ETH_TXQ_FLAGS_NOXSUMSCTP;
 134         if ((~sa->dp_tx->features & SFC_DP_TX_FEAT_VLAN_INSERT) ||
 135             !encp->enc_hw_tx_insert_vlan_enabled)
 136                 dev_info->default_txconf.txq_flags |= ETH_TXQ_FLAGS_NOVLANOFFL;
 137
 138         if (~sa->dp_tx->features & SFC_DP_TX_FEAT_MULTI_SEG)
 139                 dev_info->default_txconf.txq_flags |= ETH_TXQ_FLAGS_NOMULTSEGS;
 140
 141         if (~sa->dp_tx->features & SFC_DP_TX_FEAT_MULTI_POOL)
 142                 dev_info->default_txconf.txq_flags |= ETH_TXQ_FLAGS_NOMULTMEMP;
 143
 144         if (~sa->dp_tx->features & SFC_DP_TX_FEAT_REFCNT)
 145                 dev_info->default_txconf.txq_flags |= ETH_TXQ_FLAGS_NOREFCOUNT;
 146
 147 #if EFSYS_OPT_RX_SCALE
 148         if (sa->rss_support != EFX_RX_SCALE_UNAVAILABLE) {
 149                 dev_info->reta_size = EFX_RSS_TBL_SIZE;
 150                 dev_info->hash_key_size = EFX_RSS_KEY_SIZE;
 151                 dev_info->flow_type_rss_offloads = SFC_RSS_OFFLOADS;
 152         }
 153 #endif
 154
 155         /* Initialize to hardware limits */
 156         dev_info->rx_desc_lim.nb_max = EFX_RXQ_MAXNDESCS;
 157         dev_info->rx_desc_lim.nb_min = EFX_RXQ_MINNDESCS;
 158         /* The RXQ hardware requires that the descriptor count is a power
 159          * of 2, but rx_desc_lim cannot properly describe that constraint.
 160          */
 161         dev_info->rx_desc_lim.nb_align = EFX_RXQ_MINNDESCS;
 162
 163         /* Initialize to hardware limits */
 164         dev_info->tx_desc_lim.nb_max = sa->txq_max_entries;
 165         dev_info->tx_desc_lim.nb_min = EFX_TXQ_MINNDESCS;
 166         /*
 167          * The TXQ hardware requires that the descriptor count is a power
 168          * of 2, but tx_desc_lim cannot properly describe that constraint
 169          */
 170         dev_info->tx_desc_lim.nb_align = EFX_TXQ_MINNDESCS;
 171
 172         if (sa->dp_rx->get_dev_info != NULL)
 173                 sa->dp_rx->get_dev_info(dev_info);
 174         if (sa->dp_tx->get_dev_info != NULL)
 175                 sa->dp_tx->get_dev_info(dev_info);
 176 }
 177
 178 static const uint32_t *
 179 sfc_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 180 {
 181         struct sfc_adapter *sa = dev->data->dev_private;
 182         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
 183         uint32_t tunnel_encaps = encp->enc_tunnel_encapsulations_supported;
 184
 185         return sa->dp_rx->supported_ptypes_get(tunnel_encaps);
 186 }
 187
 188 static int
 189 sfc_dev_configure(struct rte_eth_dev *dev)
 190 {
 191         struct rte_eth_dev_data *dev_data = dev->data;
 192         struct sfc_adapter *sa = dev_data->dev_private;
 193         int rc;
 194
 195         sfc_log_init(sa, "entry n_rxq=%u n_txq=%u",
 196                      dev_data->nb_rx_queues, dev_data->nb_tx_queues);
 197
 198         sfc_adapter_lock(sa);
 199         switch (sa->state) {
 200         case SFC_ADAPTER_CONFIGURED:
 201                 /* FALLTHROUGH */
 202         case SFC_ADAPTER_INITIALIZED:
 203                 rc = sfc_configure(sa);
 204                 break;
 205         default:
 206                 sfc_err(sa, "unexpected adapter state %u to configure",
 207                         sa->state);
 208                 rc = EINVAL;
 209                 break;
 210         }
 211         sfc_adapter_unlock(sa);
 212
 213         sfc_log_init(sa, "done %d", rc);
 214         SFC_ASSERT(rc >= 0);
 215         return -rc;
 216 }
 217
 218 static int
 219 sfc_dev_start(struct rte_eth_dev *dev)
 220 {
 221         struct sfc_adapter *sa = dev->data->dev_private;
 222         int rc;
 223
 224         sfc_log_init(sa, "entry");
 225
 226         sfc_adapter_lock(sa);
 227         rc = sfc_start(sa);
 228         sfc_adapter_unlock(sa);
 229
 230         sfc_log_init(sa, "done %d", rc);
 231         SFC_ASSERT(rc >= 0);
 232         return -rc;
 233 }
 234
 235 static int
 236 sfc_dev_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 237 {
 238         struct sfc_adapter *sa = dev->data->dev_private;
 239         struct rte_eth_link *dev_link = &dev->data->dev_link;
 240         struct rte_eth_link old_link;
 241         struct rte_eth_link current_link;
 242
 243         sfc_log_init(sa, "entry");
 244
 245 retry:
 246         EFX_STATIC_ASSERT(sizeof(*dev_link) == sizeof(rte_atomic64_t));
 247         *(int64_t *)&old_link = rte_atomic64_read((rte_atomic64_t *)dev_link);
 248
 249         if (sa->state != SFC_ADAPTER_STARTED) {
 250                 sfc_port_link_mode_to_info(EFX_LINK_UNKNOWN, &current_link);
 251                 if (!rte_atomic64_cmpset((volatile uint64_t *)dev_link,
 252                                          *(uint64_t *)&old_link,
 253                                          *(uint64_t *)&current_link))
 254                         goto retry;
 255         } else if (wait_to_complete) {
 256                 efx_link_mode_t link_mode;
 257
 258                 if (efx_port_poll(sa->nic, &link_mode) != 0)
 259                         link_mode = EFX_LINK_UNKNOWN;
 260                 sfc_port_link_mode_to_info(link_mode, &current_link);
 261
 262                 if (!rte_atomic64_cmpset((volatile uint64_t *)dev_link,
 263                                          *(uint64_t *)&old_link,
 264                                          *(uint64_t *)&current_link))
 265                         goto retry;
 266         } else {
 267                 sfc_ev_mgmt_qpoll(sa);
 268                 *(int64_t *)&current_link =
 269                         rte_atomic64_read((rte_atomic64_t *)dev_link);
 270         }
 271
 272         if (old_link.link_status != current_link.link_status)
 273                 sfc_info(sa, "Link status is %s",
 274                          current_link.link_status ? "UP" : "DOWN");
 275
 276         return old_link.link_status == current_link.link_status ? 0 : -1;
 277 }
 278
 279 static void
 280 sfc_dev_stop(struct rte_eth_dev *dev)
 281 {
 282         struct sfc_adapter *sa = dev->data->dev_private;
 283
 284         sfc_log_init(sa, "entry");
 285
 286         sfc_adapter_lock(sa);
 287         sfc_stop(sa);
 288         sfc_adapter_unlock(sa);
 289
 290         sfc_log_init(sa, "done");
 291 }
 292
 293 static int
 294 sfc_dev_set_link_up(struct rte_eth_dev *dev)
 295 {
 296         struct sfc_adapter *sa = dev->data->dev_private;
 297         int rc;
 298
 299         sfc_log_init(sa, "entry");
 300
 301         sfc_adapter_lock(sa);
 302         rc = sfc_start(sa);
 303         sfc_adapter_unlock(sa);
 304
 305         SFC_ASSERT(rc >= 0);
 306         return -rc;
 307 }
 308
 309 static int
 310 sfc_dev_set_link_down(struct rte_eth_dev *dev)
 311 {
 312         struct sfc_adapter *sa = dev->data->dev_private;
 313
 314         sfc_log_init(sa, "entry");
 315
 316         sfc_adapter_lock(sa);
 317         sfc_stop(sa);
 318         sfc_adapter_unlock(sa);
 319
 320         return 0;
 321 }
 322
 323 static void
 324 sfc_dev_close(struct rte_eth_dev *dev)
 325 {
 326         struct sfc_adapter *sa = dev->data->dev_private;
 327
 328         sfc_log_init(sa, "entry");
 329
 330         sfc_adapter_lock(sa);
 331         switch (sa->state) {
 332         case SFC_ADAPTER_STARTED:
 333                 sfc_stop(sa);
 334                 SFC_ASSERT(sa->state == SFC_ADAPTER_CONFIGURED);
 335                 /* FALLTHROUGH */
 336         case SFC_ADAPTER_CONFIGURED:
 337                 sfc_close(sa);
 338                 SFC_ASSERT(sa->state == SFC_ADAPTER_INITIALIZED);
 339                 /* FALLTHROUGH */
 340         case SFC_ADAPTER_INITIALIZED:
 341                 break;
 342         default:
 343                 sfc_err(sa, "unexpected adapter state %u on close", sa->state);
 344                 break;
 345         }
 346         sfc_adapter_unlock(sa);
 347
 348         sfc_log_init(sa, "done");
 349 }
 350
 351 static void
 352 sfc_dev_filter_set(struct rte_eth_dev *dev, enum sfc_dev_filter_mode mode,
 353                    boolean_t enabled)
 354 {
 355         struct sfc_port *port;
 356         boolean_t *toggle;
 357         struct sfc_adapter *sa = dev->data->dev_private;
 358         boolean_t allmulti = (mode == SFC_DEV_FILTER_MODE_ALLMULTI);
 359         const char *desc = (allmulti) ? "all-multi" : "promiscuous";
 360
 361         sfc_adapter_lock(sa);
 362
 363         port = &sa->port;
 364         toggle = (allmulti) ? (&port->allmulti) : (&port->promisc);
 365
 366         if (*toggle != enabled) {
 367                 *toggle = enabled;
 368
 369                 if (port->isolated) {
 370                         sfc_warn(sa, "isolated mode is active on the port");
 371                         sfc_warn(sa, "the change is to be applied on the next "
 372                                      "start provided that isolated mode is "
 373                                      "disabled prior the next start");
 374                 } else if ((sa->state == SFC_ADAPTER_STARTED) &&
 375                            (sfc_set_rx_mode(sa) != 0)) {
 376                         *toggle = !(enabled);
 377                         sfc_warn(sa, "Failed to %s %s mode",
 378                                  ((enabled) ? "enable" : "disable"), desc);
 379                 }
 380         }
 381
 382         sfc_adapter_unlock(sa);
 383 }
 384
 385 static void
 386 sfc_dev_promisc_enable(struct rte_eth_dev *dev)
 387 {
 388         sfc_dev_filter_set(dev, SFC_DEV_FILTER_MODE_PROMISC, B_TRUE);
 389 }
 390
 391 static void
 392 sfc_dev_promisc_disable(struct rte_eth_dev *dev)
 393 {
 394         sfc_dev_filter_set(dev, SFC_DEV_FILTER_MODE_PROMISC, B_FALSE);
 395 }
 396
 397 static void
 398 sfc_dev_allmulti_enable(struct rte_eth_dev *dev)
 399 {
 400         sfc_dev_filter_set(dev, SFC_DEV_FILTER_MODE_ALLMULTI, B_TRUE);
 401 }
 402
 403 static void
 404 sfc_dev_allmulti_disable(struct rte_eth_dev *dev)
 405 {
 406         sfc_dev_filter_set(dev, SFC_DEV_FILTER_MODE_ALLMULTI, B_FALSE);
 407 }
 408
 409 static int
 410 sfc_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id,
 411                    uint16_t nb_rx_desc, unsigned int socket_id,
 412                    const struct rte_eth_rxconf *rx_conf,
 413                    struct rte_mempool *mb_pool)
 414 {
 415         struct sfc_adapter *sa = dev->data->dev_private;
 416         int rc;
 417
 418         sfc_log_init(sa, "RxQ=%u nb_rx_desc=%u socket_id=%u",
 419                      rx_queue_id, nb_rx_desc, socket_id);
 420
 421         sfc_adapter_lock(sa);
 422
 423         rc = sfc_rx_qinit(sa, rx_queue_id, nb_rx_desc, socket_id,
 424                           rx_conf, mb_pool);
 425         if (rc != 0)
 426                 goto fail_rx_qinit;
 427
 428         dev->data->rx_queues[rx_queue_id] = sa->rxq_info[rx_queue_id].rxq->dp;
 429
 430         sfc_adapter_unlock(sa);
 431
 432         return 0;
 433
 434 fail_rx_qinit:
 435         sfc_adapter_unlock(sa);
 436         SFC_ASSERT(rc > 0);
 437         return -rc;
 438 }
 439
 440 static void
 441 sfc_rx_queue_release(void *queue)
 442 {
 443         struct sfc_dp_rxq *dp_rxq = queue;
 444         struct sfc_rxq *rxq;
 445         struct sfc_adapter *sa;
 446         unsigned int sw_index;
 447
 448         if (dp_rxq == NULL)
 449                 return;
 450
 451         rxq = sfc_rxq_by_dp_rxq(dp_rxq);
 452         sa = rxq->evq->sa;
 453         sfc_adapter_lock(sa);
 454
 455         sw_index = sfc_rxq_sw_index(rxq);
 456
 457         sfc_log_init(sa, "RxQ=%u", sw_index);
 458
 459         sa->eth_dev->data->rx_queues[sw_index] = NULL;
 460
 461         sfc_rx_qfini(sa, sw_index);
 462
 463         sfc_adapter_unlock(sa);
 464 }
 465
 466 static int
 467 sfc_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id,
 468                    uint16_t nb_tx_desc, unsigned int socket_id,
 469                    const struct rte_eth_txconf *tx_conf)
 470 {
 471         struct sfc_adapter *sa = dev->data->dev_private;
 472         int rc;
 473
 474         sfc_log_init(sa, "TxQ = %u, nb_tx_desc = %u, socket_id = %u",
 475                      tx_queue_id, nb_tx_desc, socket_id);
 476
 477         sfc_adapter_lock(sa);
 478
 479         rc = sfc_tx_qinit(sa, tx_queue_id, nb_tx_desc, socket_id, tx_conf);
 480         if (rc != 0)
 481                 goto fail_tx_qinit;
 482
 483         dev->data->tx_queues[tx_queue_id] = sa->txq_info[tx_queue_id].txq->dp;
 484
 485         sfc_adapter_unlock(sa);
 486         return 0;
 487
 488 fail_tx_qinit:
 489         sfc_adapter_unlock(sa);
 490         SFC_ASSERT(rc > 0);
 491         return -rc;
 492 }
 493
 494 static void
 495 sfc_tx_queue_release(void *queue)
 496 {
 497         struct sfc_dp_txq *dp_txq = queue;
 498         struct sfc_txq *txq;
 499         unsigned int sw_index;
 500         struct sfc_adapter *sa;
 501
 502         if (dp_txq == NULL)
 503                 return;
 504
 505         txq = sfc_txq_by_dp_txq(dp_txq);
 506         sw_index = sfc_txq_sw_index(txq);
 507
 508         SFC_ASSERT(txq->evq != NULL);
 509         sa = txq->evq->sa;
 510
 511         sfc_log_init(sa, "TxQ = %u", sw_index);
 512
 513         sfc_adapter_lock(sa);
 514
 515         SFC_ASSERT(sw_index < sa->eth_dev->data->nb_tx_queues);
 516         sa->eth_dev->data->tx_queues[sw_index] = NULL;
 517
 518         sfc_tx_qfini(sa, sw_index);
 519
 520         sfc_adapter_unlock(sa);
 521 }
 522
 523 static int
 524 sfc_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 525 {
 526         struct sfc_adapter *sa = dev->data->dev_private;
 527         struct sfc_port *port = &sa->port;
 528         uint64_t *mac_stats;
 529         int ret;
 530
 531         rte_spinlock_lock(&port->mac_stats_lock);
 532
 533         ret = sfc_port_update_mac_stats(sa);
 534         if (ret != 0)
 535                 goto unlock;
 536
 537         mac_stats = port->mac_stats_buf;
 538
 539         if (EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask,
 540                                    EFX_MAC_VADAPTER_RX_UNICAST_PACKETS)) {
 541                 stats->ipackets =
 542                         mac_stats[EFX_MAC_VADAPTER_RX_UNICAST_PACKETS] +
 543                         mac_stats[EFX_MAC_VADAPTER_RX_MULTICAST_PACKETS] +
 544                         mac_stats[EFX_MAC_VADAPTER_RX_BROADCAST_PACKETS];
 545                 stats->opackets =
 546                         mac_stats[EFX_MAC_VADAPTER_TX_UNICAST_PACKETS] +
 547                         mac_stats[EFX_MAC_VADAPTER_TX_MULTICAST_PACKETS] +
 548                         mac_stats[EFX_MAC_VADAPTER_TX_BROADCAST_PACKETS];
 549                 stats->ibytes =
 550                         mac_stats[EFX_MAC_VADAPTER_RX_UNICAST_BYTES] +
 551                         mac_stats[EFX_MAC_VADAPTER_RX_MULTICAST_BYTES] +
 552                         mac_stats[EFX_MAC_VADAPTER_RX_BROADCAST_BYTES];
 553                 stats->obytes =
 554                         mac_stats[EFX_MAC_VADAPTER_TX_UNICAST_BYTES] +
 555                         mac_stats[EFX_MAC_VADAPTER_TX_MULTICAST_BYTES] +
 556                         mac_stats[EFX_MAC_VADAPTER_TX_BROADCAST_BYTES];
 557                 stats->imissed = mac_stats[EFX_MAC_VADAPTER_RX_OVERFLOW];
 558                 stats->ierrors = mac_stats[EFX_MAC_VADAPTER_RX_BAD_PACKETS];
 559                 stats->oerrors = mac_stats[EFX_MAC_VADAPTER_TX_BAD_PACKETS];
 560         } else {
 561                 stats->ipackets = mac_stats[EFX_MAC_RX_PKTS];
 562                 stats->opackets = mac_stats[EFX_MAC_TX_PKTS];
 563                 stats->ibytes = mac_stats[EFX_MAC_RX_OCTETS];
 564                 stats->obytes = mac_stats[EFX_MAC_TX_OCTETS];
 565                 /*
 566                  * Take into account stats which are whenever supported
 567                  * on EF10. If some stat is not supported by current
 568                  * firmware variant or HW revision, it is guaranteed
 569                  * to be zero in mac_stats.
 570                  */
 571                 stats->imissed =
 572                         mac_stats[EFX_MAC_RX_NODESC_DROP_CNT] +
 573                         mac_stats[EFX_MAC_PM_TRUNC_BB_OVERFLOW] +
 574                         mac_stats[EFX_MAC_PM_DISCARD_BB_OVERFLOW] +
 575                         mac_stats[EFX_MAC_PM_TRUNC_VFIFO_FULL] +
 576                         mac_stats[EFX_MAC_PM_DISCARD_VFIFO_FULL] +
 577                         mac_stats[EFX_MAC_PM_TRUNC_QBB] +
 578                         mac_stats[EFX_MAC_PM_DISCARD_QBB] +
 579                         mac_stats[EFX_MAC_PM_DISCARD_MAPPING] +
 580                         mac_stats[EFX_MAC_RXDP_Q_DISABLED_PKTS] +
 581                         mac_stats[EFX_MAC_RXDP_DI_DROPPED_PKTS];
 582                 stats->ierrors =
 583                         mac_stats[EFX_MAC_RX_FCS_ERRORS] +
 584                         mac_stats[EFX_MAC_RX_ALIGN_ERRORS] +
 585                         mac_stats[EFX_MAC_RX_JABBER_PKTS];
 586                 /* no oerrors counters supported on EF10 */
 587         }
 588
 589 unlock:
 590         rte_spinlock_unlock(&port->mac_stats_lock);
 591         SFC_ASSERT(ret >= 0);
 592         return -ret;
 593 }
 594
 595 static void
 596 sfc_stats_reset(struct rte_eth_dev *dev)
 597 {
 598         struct sfc_adapter *sa = dev->data->dev_private;
 599         struct sfc_port *port = &sa->port;
 600         int rc;
 601
 602         if (sa->state != SFC_ADAPTER_STARTED) {
 603                 /*
 604                  * The operation cannot be done if port is not started; it
 605                  * will be scheduled to be done during the next port start
 606                  */
 607                 port->mac_stats_reset_pending = B_TRUE;
 608                 return;
 609         }
 610
 611         rc = sfc_port_reset_mac_stats(sa);
 612         if (rc != 0)
 613                 sfc_err(sa, "failed to reset statistics (rc = %d)", rc);
 614 }
 615
 616 static int
 617 sfc_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
 618                unsigned int xstats_count)
 619 {
 620         struct sfc_adapter *sa = dev->data->dev_private;
 621         struct sfc_port *port = &sa->port;
 622         uint64_t *mac_stats;
 623         int rc;
 624         unsigned int i;
 625         int nstats = 0;
 626
 627         rte_spinlock_lock(&port->mac_stats_lock);
 628
 629         rc = sfc_port_update_mac_stats(sa);
 630         if (rc != 0) {
 631                 SFC_ASSERT(rc > 0);
 632                 nstats = -rc;
 633                 goto unlock;
 634         }
 635
 636         mac_stats = port->mac_stats_buf;
 637
 638         for (i = 0; i < EFX_MAC_NSTATS; ++i) {
 639                 if (EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask, i)) {
 640                         if (xstats != NULL && nstats < (int)xstats_count) {
 641                                 xstats[nstats].id = nstats;
 642                                 xstats[nstats].value = mac_stats[i];
 643                         }
 644                         nstats++;
 645                 }
 646         }
 647
 648 unlock:
 649         rte_spinlock_unlock(&port->mac_stats_lock);
 650
 651         return nstats;
 652 }
 653
 654 static int
 655 sfc_xstats_get_names(struct rte_eth_dev *dev,
 656                      struct rte_eth_xstat_name *xstats_names,
 657                      unsigned int xstats_count)
 658 {
 659         struct sfc_adapter *sa = dev->data->dev_private;
 660         struct sfc_port *port = &sa->port;
 661         unsigned int i;
 662         unsigned int nstats = 0;
 663
 664         for (i = 0; i < EFX_MAC_NSTATS; ++i) {
 665                 if (EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask, i)) {
 666                         if (xstats_names != NULL && nstats < xstats_count)
 667                                 strncpy(xstats_names[nstats].name,
 668                                         efx_mac_stat_name(sa->nic, i),
 669                                         sizeof(xstats_names[0].name));
 670                         nstats++;
 671                 }
 672         }
 673
 674         return nstats;
 675 }
 676
 677 static int
 678 sfc_xstats_get_by_id(struct rte_eth_dev *dev, const uint64_t *ids,
 679                      uint64_t *values, unsigned int n)
 680 {
 681         struct sfc_adapter *sa = dev->data->dev_private;
 682         struct sfc_port *port = &sa->port;
 683         uint64_t *mac_stats;
 684         unsigned int nb_supported = 0;
 685         unsigned int nb_written = 0;
 686         unsigned int i;
 687         int ret;
 688         int rc;
 689
 690         if (unlikely(values == NULL) ||
 691             unlikely((ids == NULL) && (n < port->mac_stats_nb_supported)))
 692                 return port->mac_stats_nb_supported;
 693
 694         rte_spinlock_lock(&port->mac_stats_lock);
 695
 696         rc = sfc_port_update_mac_stats(sa);
 697         if (rc != 0) {
 698                 SFC_ASSERT(rc > 0);
 699                 ret = -rc;
 700                 goto unlock;
 701         }
 702
 703         mac_stats = port->mac_stats_buf;
 704
 705         for (i = 0; (i < EFX_MAC_NSTATS) && (nb_written < n); ++i) {
 706                 if (!EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask, i))
 707                         continue;
 708
 709                 if ((ids == NULL) || (ids[nb_written] == nb_supported))
 710                         values[nb_written++] = mac_stats[i];
 711
 712                 ++nb_supported;
 713         }
 714
 715         ret = nb_written;
 716
 717 unlock:
 718         rte_spinlock_unlock(&port->mac_stats_lock);
 719
 720         return ret;
 721 }
 722
 723 static int
 724 sfc_xstats_get_names_by_id(struct rte_eth_dev *dev,
 725                            struct rte_eth_xstat_name *xstats_names,
 726                            const uint64_t *ids, unsigned int size)
 727 {
 728         struct sfc_adapter *sa = dev->data->dev_private;
 729         struct sfc_port *port = &sa->port;
 730         unsigned int nb_supported = 0;
 731         unsigned int nb_written = 0;
 732         unsigned int i;
 733
 734         if (unlikely(xstats_names == NULL) ||
 735             unlikely((ids == NULL) && (size < port->mac_stats_nb_supported)))
 736                 return port->mac_stats_nb_supported;
 737
 738         for (i = 0; (i < EFX_MAC_NSTATS) && (nb_written < size); ++i) {
 739                 if (!EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask, i))
 740                         continue;
 741
 742                 if ((ids == NULL) || (ids[nb_written] == nb_supported)) {
 743                         char *name = xstats_names[nb_written++].name;
 744
 745                         strncpy(name, efx_mac_stat_name(sa->nic, i),
 746                                 sizeof(xstats_names[0].name));
 747                         name[sizeof(xstats_names[0].name) - 1] = '\0';
 748                 }
 749
 750                 ++nb_supported;
 751         }
 752
 753         return nb_written;
 754 }
 755
 756 static int
 757 sfc_flow_ctrl_get(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 758 {
 759         struct sfc_adapter *sa = dev->data->dev_private;
 760         unsigned int wanted_fc, link_fc;
 761
 762         memset(fc_conf, 0, sizeof(*fc_conf));
 763
 764         sfc_adapter_lock(sa);
 765
 766         if (sa->state == SFC_ADAPTER_STARTED)
 767                 efx_mac_fcntl_get(sa->nic, &wanted_fc, &link_fc);
 768         else
 769                 link_fc = sa->port.flow_ctrl;
 770
 771         switch (link_fc) {
 772         case 0:
 773                 fc_conf->mode = RTE_FC_NONE;
 774                 break;
 775         case EFX_FCNTL_RESPOND:
 776                 fc_conf->mode = RTE_FC_RX_PAUSE;
 777                 break;
 778         case EFX_FCNTL_GENERATE:
 779                 fc_conf->mode = RTE_FC_TX_PAUSE;
 780                 break;
 781         case (EFX_FCNTL_RESPOND | EFX_FCNTL_GENERATE):
 782                 fc_conf->mode = RTE_FC_FULL;
 783                 break;
 784         default:
 785                 sfc_err(sa, "%s: unexpected flow control value %#x",
 786                         __func__, link_fc);
 787         }
 788
 789         fc_conf->autoneg = sa->port.flow_ctrl_autoneg;
 790
 791         sfc_adapter_unlock(sa);
 792
 793         return 0;
 794 }
 795
 796 static int
 797 sfc_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 798 {
 799         struct sfc_adapter *sa = dev->data->dev_private;
 800         struct sfc_port *port = &sa->port;
 801         unsigned int fcntl;
 802         int rc;
 803
 804         if (fc_conf->high_water != 0 || fc_conf->low_water != 0 ||
 805             fc_conf->pause_time != 0 || fc_conf->send_xon != 0 ||
 806             fc_conf->mac_ctrl_frame_fwd != 0) {
 807                 sfc_err(sa, "unsupported flow control settings specified");
 808                 rc = EINVAL;
 809                 goto fail_inval;
 810         }
 811
 812         switch (fc_conf->mode) {
 813         case RTE_FC_NONE:
 814                 fcntl = 0;
 815                 break;
 816         case RTE_FC_RX_PAUSE:
 817                 fcntl = EFX_FCNTL_RESPOND;
 818                 break;
 819         case RTE_FC_TX_PAUSE:
 820                 fcntl = EFX_FCNTL_GENERATE;
 821                 break;
 822         case RTE_FC_FULL:
 823                 fcntl = EFX_FCNTL_RESPOND | EFX_FCNTL_GENERATE;
 824                 break;
 825         default:
 826                 rc = EINVAL;
 827                 goto fail_inval;
 828         }
 829
 830         sfc_adapter_lock(sa);
 831
 832         if (sa->state == SFC_ADAPTER_STARTED) {
 833                 rc = efx_mac_fcntl_set(sa->nic, fcntl, fc_conf->autoneg);
 834                 if (rc != 0)
 835                         goto fail_mac_fcntl_set;
 836         }
 837
 838         port->flow_ctrl = fcntl;
 839         port->flow_ctrl_autoneg = fc_conf->autoneg;
 840
 841         sfc_adapter_unlock(sa);
 842
 843         return 0;
 844
 845 fail_mac_fcntl_set:
 846         sfc_adapter_unlock(sa);
 847 fail_inval:
 848         SFC_ASSERT(rc > 0);
 849         return -rc;
 850 }
 851
 852 static int
 853 sfc_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 854 {
 855         struct sfc_adapter *sa = dev->data->dev_private;
 856         size_t pdu = EFX_MAC_PDU(mtu);
 857         size_t old_pdu;
 858         int rc;
 859
 860         sfc_log_init(sa, "mtu=%u", mtu);
 861
 862         rc = EINVAL;
 863         if (pdu < EFX_MAC_PDU_MIN) {
 864                 sfc_err(sa, "too small MTU %u (PDU size %u less than min %u)",
 865                         (unsigned int)mtu, (unsigned int)pdu,
 866                         EFX_MAC_PDU_MIN);
 867                 goto fail_inval;
 868         }
 869         if (pdu > EFX_MAC_PDU_MAX) {
 870                 sfc_err(sa, "too big MTU %u (PDU size %u greater than max %u)",
 871                         (unsigned int)mtu, (unsigned int)pdu,
 872                         EFX_MAC_PDU_MAX);
 873                 goto fail_inval;
 874         }
 875
 876         sfc_adapter_lock(sa);
 877
 878         if (pdu != sa->port.pdu) {
 879                 if (sa->state == SFC_ADAPTER_STARTED) {
 880                         sfc_stop(sa);
 881
 882                         old_pdu = sa->port.pdu;
 883                         sa->port.pdu = pdu;
 884                         rc = sfc_start(sa);
 885                         if (rc != 0)
 886                                 goto fail_start;
 887                 } else {
 888                         sa->port.pdu = pdu;
 889                 }
 890         }
 891
 892         /*
 893          * The driver does not use it, but other PMDs update jumbo_frame
 894          * flag and max_rx_pkt_len when MTU is set.
 895          */
 896         if (mtu > ETHER_MAX_LEN) {
 897                 struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
 898
 899                 rxmode->offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
 900                 rxmode->jumbo_frame = 1;
 901         }
 902
 903         dev->data->dev_conf.rxmode.max_rx_pkt_len = sa->port.pdu;
 904
 905         sfc_adapter_unlock(sa);
 906
 907         sfc_log_init(sa, "done");
 908         return 0;
 909
 910 fail_start:
 911         sa->port.pdu = old_pdu;
 912         if (sfc_start(sa) != 0)
 913                 sfc_err(sa, "cannot start with neither new (%u) nor old (%u) "
 914                         "PDU max size - port is stopped",
 915                         (unsigned int)pdu, (unsigned int)old_pdu);
 916         sfc_adapter_unlock(sa);
 917
 918 fail_inval:
 919         sfc_log_init(sa, "failed %d", rc);
 920         SFC_ASSERT(rc > 0);
 921         return -rc;
 922 }
 923 static void
 924 sfc_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
 925 {
 926         struct sfc_adapter *sa = dev->data->dev_private;
 927         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
 928         struct sfc_port *port = &sa->port;
 929         int rc;
 930
 931         sfc_adapter_lock(sa);
 932
 933         /*
 934          * Copy the address to the device private data so that
 935          * it could be recalled in the case of adapter restart.
 936          */
 937         ether_addr_copy(mac_addr, &port->default_mac_addr);
 938
 939         if (port->isolated) {
 940                 sfc_err(sa, "isolated mode is active on the port");
 941                 sfc_err(sa, "will not set MAC address");
 942                 goto unlock;
 943         }
 944
 945         if (sa->state != SFC_ADAPTER_STARTED) {
 946                 sfc_info(sa, "the port is not started");
 947                 sfc_info(sa, "the new MAC address will be set on port start");
 948
 949                 goto unlock;
 950         }
 951
 952         if (encp->enc_allow_set_mac_with_installed_filters) {
 953                 rc = efx_mac_addr_set(sa->nic, mac_addr->addr_bytes);
 954                 if (rc != 0) {
 955                         sfc_err(sa, "cannot set MAC address (rc = %u)", rc);
 956                         goto unlock;
 957                 }
 958
 959                 /*
 960                  * Changing the MAC address by means of MCDI request
 961                  * has no effect on received traffic, therefore
 962                  * we also need to update unicast filters
 963                  */
 964                 rc = sfc_set_rx_mode(sa);
 965                 if (rc != 0)
 966                         sfc_err(sa, "cannot set filter (rc = %u)", rc);
 967         } else {
 968                 sfc_warn(sa, "cannot set MAC address with filters installed");
 969                 sfc_warn(sa, "adapter will be restarted to pick the new MAC");
 970                 sfc_warn(sa, "(some traffic may be dropped)");
 971
 972                 /*
 973                  * Since setting MAC address with filters installed is not
 974                  * allowed on the adapter, the new MAC address will be set
 975                  * by means of adapter restart. sfc_start() shall retrieve
 976                  * the new address from the device private data and set it.
 977                  */
 978                 sfc_stop(sa);
 979                 rc = sfc_start(sa);
 980                 if (rc != 0)
 981                         sfc_err(sa, "cannot restart adapter (rc = %u)", rc);
 982         }
 983
 984 unlock:
 985         /*
 986          * In the case of failure sa->port->default_mac_addr does not
 987          * need rollback since no error code is returned, and the upper
 988          * API will anyway update the external MAC address storage.
 989          * To be consistent with that new value it is better to keep
 990          * the device private value the same.
 991          */
 992         sfc_adapter_unlock(sa);
 993 }
 994
 995
 996 static int
 997 sfc_set_mc_addr_list(struct rte_eth_dev *dev, struct ether_addr *mc_addr_set,
 998                      uint32_t nb_mc_addr)
 999 {
1000         struct sfc_adapter *sa = dev->data->dev_private;
1001         struct sfc_port *port = &sa->port;
1002         uint8_t *mc_addrs = port->mcast_addrs;
1003         int rc;
1004         unsigned int i;
1005
1006         if (port->isolated) {
1007                 sfc_err(sa, "isolated mode is active on the port");
1008                 sfc_err(sa, "will not set multicast address list");
1009                 return -ENOTSUP;
1010         }
1011
1012         if (mc_addrs == NULL)
1013                 return -ENOBUFS;
1014
1015         if (nb_mc_addr > port->max_mcast_addrs) {
1016                 sfc_err(sa, "too many multicast addresses: %u > %u",
1017                          nb_mc_addr, port->max_mcast_addrs);
1018                 return -EINVAL;
1019         }
1020
1021         for (i = 0; i < nb_mc_addr; ++i) {
1022                 rte_memcpy(mc_addrs, mc_addr_set[i].addr_bytes,
1023                                  EFX_MAC_ADDR_LEN);
1024                 mc_addrs += EFX_MAC_ADDR_LEN;
1025         }
1026
1027         port->nb_mcast_addrs = nb_mc_addr;
1028
1029         if (sa->state != SFC_ADAPTER_STARTED)
1030                 return 0;
1031
1032         rc = efx_mac_multicast_list_set(sa->nic, port->mcast_addrs,
1033                                         port->nb_mcast_addrs);
1034         if (rc != 0)
1035                 sfc_err(sa, "cannot set multicast address list (rc = %u)", rc);
1036
1037         SFC_ASSERT(rc > 0);
1038         return -rc;
1039 }
1040
1041 /*
1042  * The function is used by the secondary process as well. It must not
1043  * use any process-local pointers from the adapter data.
1044  */
1045 static void
1046 sfc_rx_queue_info_get(struct rte_eth_dev *dev, uint16_t rx_queue_id,
1047                       struct rte_eth_rxq_info *qinfo)
1048 {
1049         struct sfc_adapter *sa = dev->data->dev_private;
1050         struct sfc_rxq_info *rxq_info;
1051         struct sfc_rxq *rxq;
1052
1053         sfc_adapter_lock(sa);
1054
1055         SFC_ASSERT(rx_queue_id < sa->rxq_count);
1056
1057         rxq_info = &sa->rxq_info[rx_queue_id];
1058         rxq = rxq_info->rxq;
1059         SFC_ASSERT(rxq != NULL);
1060
1061         qinfo->mp = rxq->refill_mb_pool;
1062         qinfo->conf.rx_free_thresh = rxq->refill_threshold;
1063         qinfo->conf.rx_drop_en = 1;
1064         qinfo->conf.rx_deferred_start = rxq_info->deferred_start;
1065         qinfo->conf.offloads = DEV_RX_OFFLOAD_IPV4_CKSUM |
1066                                DEV_RX_OFFLOAD_UDP_CKSUM |
1067                                DEV_RX_OFFLOAD_TCP_CKSUM;
1068         if (rxq_info->type_flags & EFX_RXQ_FLAG_SCATTER) {
1069                 qinfo->conf.offloads |= DEV_RX_OFFLOAD_SCATTER;
1070                 qinfo->scattered_rx = 1;
1071         }
1072         qinfo->nb_desc = rxq_info->entries;
1073
1074         sfc_adapter_unlock(sa);
1075 }
1076
1077 /*
1078  * The function is used by the secondary process as well. It must not
1079  * use any process-local pointers from the adapter data.
1080  */
1081 static void
1082 sfc_tx_queue_info_get(struct rte_eth_dev *dev, uint16_t tx_queue_id,
1083                       struct rte_eth_txq_info *qinfo)
1084 {
1085         struct sfc_adapter *sa = dev->data->dev_private;
1086         struct sfc_txq_info *txq_info;
1087
1088         sfc_adapter_lock(sa);
1089
1090         SFC_ASSERT(tx_queue_id < sa->txq_count);
1091
1092         txq_info = &sa->txq_info[tx_queue_id];
1093         SFC_ASSERT(txq_info->txq != NULL);
1094
1095         memset(qinfo, 0, sizeof(*qinfo));
1096
1097         qinfo->conf.txq_flags = txq_info->txq->flags;
1098         qinfo->conf.offloads = txq_info->txq->offloads;
1099         qinfo->conf.tx_free_thresh = txq_info->txq->free_thresh;
1100         qinfo->conf.tx_deferred_start = txq_info->deferred_start;
1101         qinfo->nb_desc = txq_info->entries;
1102
1103         sfc_adapter_unlock(sa);
1104 }
1105
1106 static uint32_t
1107 sfc_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
1108 {
1109         struct sfc_adapter *sa = dev->data->dev_private;
1110
1111         sfc_log_init(sa, "RxQ=%u", rx_queue_id);
1112
1113         return sfc_rx_qdesc_npending(sa, rx_queue_id);
1114 }
1115
1116 static int
1117 sfc_rx_descriptor_done(void *queue, uint16_t offset)
1118 {
1119         struct sfc_dp_rxq *dp_rxq = queue;
1120
1121         return sfc_rx_qdesc_done(dp_rxq, offset);
1122 }
1123
1124 static int
1125 sfc_rx_descriptor_status(void *queue, uint16_t offset)
1126 {
1127         struct sfc_dp_rxq *dp_rxq = queue;
1128         struct sfc_rxq *rxq = sfc_rxq_by_dp_rxq(dp_rxq);
1129
1130         return rxq->evq->sa->dp_rx->qdesc_status(dp_rxq, offset);
1131 }
1132
1133 static int
1134 sfc_tx_descriptor_status(void *queue, uint16_t offset)
1135 {
1136         struct sfc_dp_txq *dp_txq = queue;
1137         struct sfc_txq *txq = sfc_txq_by_dp_txq(dp_txq);
1138
1139         return txq->evq->sa->dp_tx->qdesc_status(dp_txq, offset);
1140 }
1141
1142 static int
1143 sfc_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
1144 {
1145         struct sfc_adapter *sa = dev->data->dev_private;
1146         int rc;
1147
1148         sfc_log_init(sa, "RxQ=%u", rx_queue_id);
1149
1150         sfc_adapter_lock(sa);
1151
1152         rc = EINVAL;
1153         if (sa->state != SFC_ADAPTER_STARTED)
1154                 goto fail_not_started;
1155
1156         rc = sfc_rx_qstart(sa, rx_queue_id);
1157         if (rc != 0)
1158                 goto fail_rx_qstart;
1159
1160         sa->rxq_info[rx_queue_id].deferred_started = B_TRUE;
1161
1162         sfc_adapter_unlock(sa);
1163
1164         return 0;
1165
1166 fail_rx_qstart:
1167 fail_not_started:
1168         sfc_adapter_unlock(sa);
1169         SFC_ASSERT(rc > 0);
1170         return -rc;
1171 }
1172
1173 static int
1174 sfc_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
1175 {
1176         struct sfc_adapter *sa = dev->data->dev_private;
1177
1178         sfc_log_init(sa, "RxQ=%u", rx_queue_id);
1179
1180         sfc_adapter_lock(sa);
1181         sfc_rx_qstop(sa, rx_queue_id);
1182
1183         sa->rxq_info[rx_queue_id].deferred_started = B_FALSE;
1184
1185         sfc_adapter_unlock(sa);
1186
1187         return 0;
1188 }
1189
1190 static int
1191 sfc_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
1192 {
1193         struct sfc_adapter *sa = dev->data->dev_private;
1194         int rc;
1195
1196         sfc_log_init(sa, "TxQ = %u", tx_queue_id);
1197
1198         sfc_adapter_lock(sa);
1199
1200         rc = EINVAL;
1201         if (sa->state != SFC_ADAPTER_STARTED)
1202                 goto fail_not_started;
1203
1204         rc = sfc_tx_qstart(sa, tx_queue_id);
1205         if (rc != 0)
1206                 goto fail_tx_qstart;
1207
1208         sa->txq_info[tx_queue_id].deferred_started = B_TRUE;
1209
1210         sfc_adapter_unlock(sa);
1211         return 0;
1212
1213 fail_tx_qstart:
1214
1215 fail_not_started:
1216         sfc_adapter_unlock(sa);
1217         SFC_ASSERT(rc > 0);
1218         return -rc;
1219 }
1220
1221 static int
1222 sfc_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
1223 {
1224         struct sfc_adapter *sa = dev->data->dev_private;
1225
1226         sfc_log_init(sa, "TxQ = %u", tx_queue_id);
1227
1228         sfc_adapter_lock(sa);
1229
1230         sfc_tx_qstop(sa, tx_queue_id);
1231
1232         sa->txq_info[tx_queue_id].deferred_started = B_FALSE;
1233
1234         sfc_adapter_unlock(sa);
1235         return 0;
1236 }
1237
1238 static efx_tunnel_protocol_t
1239 sfc_tunnel_rte_type_to_efx_udp_proto(enum rte_eth_tunnel_type rte_type)
1240 {
1241         switch (rte_type) {
1242         case RTE_TUNNEL_TYPE_VXLAN:
1243                 return EFX_TUNNEL_PROTOCOL_VXLAN;
1244         case RTE_TUNNEL_TYPE_GENEVE:
1245                 return EFX_TUNNEL_PROTOCOL_GENEVE;
1246         default:
1247                 return EFX_TUNNEL_NPROTOS;
1248         }
1249 }
1250
1251 enum sfc_udp_tunnel_op_e {
1252         SFC_UDP_TUNNEL_ADD_PORT,
1253         SFC_UDP_TUNNEL_DEL_PORT,
1254 };
1255
1256 static int
1257 sfc_dev_udp_tunnel_op(struct rte_eth_dev *dev,
1258                       struct rte_eth_udp_tunnel *tunnel_udp,
1259                       enum sfc_udp_tunnel_op_e op)
1260 {
1261         struct sfc_adapter *sa = dev->data->dev_private;
1262         efx_tunnel_protocol_t tunnel_proto;
1263         int rc;
1264
1265         sfc_log_init(sa, "%s udp_port=%u prot_type=%u",
1266                      (op == SFC_UDP_TUNNEL_ADD_PORT) ? "add" :
1267                      (op == SFC_UDP_TUNNEL_DEL_PORT) ? "delete" : "unknown",
1268                      tunnel_udp->udp_port, tunnel_udp->prot_type);
1269
1270         tunnel_proto =
1271                 sfc_tunnel_rte_type_to_efx_udp_proto(tunnel_udp->prot_type);
1272         if (tunnel_proto >= EFX_TUNNEL_NPROTOS) {
1273                 rc = ENOTSUP;
1274                 goto fail_bad_proto;
1275         }
1276
1277         sfc_adapter_lock(sa);
1278
1279         switch (op) {
1280         case SFC_UDP_TUNNEL_ADD_PORT:
1281                 rc = efx_tunnel_config_udp_add(sa->nic,
1282                                                tunnel_udp->udp_port,
1283                                                tunnel_proto);
1284                 break;
1285         case SFC_UDP_TUNNEL_DEL_PORT:
1286                 rc = efx_tunnel_config_udp_remove(sa->nic,
1287                                                   tunnel_udp->udp_port,
1288                                                   tunnel_proto);
1289                 break;
1290         default:
1291                 rc = EINVAL;
1292                 goto fail_bad_op;
1293         }
1294
1295         if (rc != 0)
1296                 goto fail_op;
1297
1298         if (sa->state == SFC_ADAPTER_STARTED) {
1299                 rc = efx_tunnel_reconfigure(sa->nic);
1300                 if (rc == EAGAIN) {
1301                         /*
1302                          * Configuration is accepted by FW and MC reboot
1303                          * is initiated to apply the changes. MC reboot
1304                          * will be handled in a usual way (MC reboot
1305                          * event on management event queue and adapter
1306                          * restart).
1307                          */
1308                         rc = 0;
1309                 } else if (rc != 0) {
1310                         goto fail_reconfigure;
1311                 }
1312         }
1313
1314         sfc_adapter_unlock(sa);
1315         return 0;
1316
1317 fail_reconfigure:
1318         /* Remove/restore entry since the change makes the trouble */
1319         switch (op) {
1320         case SFC_UDP_TUNNEL_ADD_PORT:
1321                 (void)efx_tunnel_config_udp_remove(sa->nic,
1322                                                    tunnel_udp->udp_port,
1323                                                    tunnel_proto);
1324                 break;
1325         case SFC_UDP_TUNNEL_DEL_PORT:
1326                 (void)efx_tunnel_config_udp_add(sa->nic,
1327                                                 tunnel_udp->udp_port,
1328                                                 tunnel_proto);
1329                 break;
1330         }
1331
1332 fail_op:
1333 fail_bad_op:
1334         sfc_adapter_unlock(sa);
1335
1336 fail_bad_proto:
1337         SFC_ASSERT(rc > 0);
1338         return -rc;
1339 }
1340
1341 static int
1342 sfc_dev_udp_tunnel_port_add(struct rte_eth_dev *dev,
1343                             struct rte_eth_udp_tunnel *tunnel_udp)
1344 {
1345         return sfc_dev_udp_tunnel_op(dev, tunnel_udp, SFC_UDP_TUNNEL_ADD_PORT);
1346 }
1347
1348 static int
1349 sfc_dev_udp_tunnel_port_del(struct rte_eth_dev *dev,
1350                             struct rte_eth_udp_tunnel *tunnel_udp)
1351 {
1352         return sfc_dev_udp_tunnel_op(dev, tunnel_udp, SFC_UDP_TUNNEL_DEL_PORT);
1353 }
1354
1355 #if EFSYS_OPT_RX_SCALE
1356 static int
1357 sfc_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
1358                           struct rte_eth_rss_conf *rss_conf)
1359 {
1360         struct sfc_adapter *sa = dev->data->dev_private;
1361         struct sfc_port *port = &sa->port;
1362
1363         if ((sa->rss_support != EFX_RX_SCALE_EXCLUSIVE) || port->isolated)
1364                 return -ENOTSUP;
1365
1366         if (sa->rss_channels == 0)
1367                 return -EINVAL;
1368
1369         sfc_adapter_lock(sa);
1370
1371         /*
1372          * Mapping of hash configuration between RTE and EFX is not one-to-one,
1373          * hence, conversion is done here to derive a correct set of ETH_RSS
1374          * flags which corresponds to the active EFX configuration stored
1375          * locally in 'sfc_adapter' and kept up-to-date
1376          */
1377         rss_conf->rss_hf = sfc_efx_to_rte_hash_type(sa->rss_hash_types);
1378         rss_conf->rss_key_len = EFX_RSS_KEY_SIZE;
1379         if (rss_conf->rss_key != NULL)
1380                 rte_memcpy(rss_conf->rss_key, sa->rss_key, EFX_RSS_KEY_SIZE);
1381
1382         sfc_adapter_unlock(sa);
1383
1384         return 0;
1385 }
1386
1387 static int
1388 sfc_dev_rss_hash_update(struct rte_eth_dev *dev,
1389                         struct rte_eth_rss_conf *rss_conf)
1390 {
1391         struct sfc_adapter *sa = dev->data->dev_private;
1392         struct sfc_port *port = &sa->port;
1393         unsigned int efx_hash_types;
1394         int rc = 0;
1395
1396         if (port->isolated)
1397                 return -ENOTSUP;
1398
1399         if (sa->rss_support != EFX_RX_SCALE_EXCLUSIVE) {
1400                 sfc_err(sa, "RSS is not available");
1401                 return -ENOTSUP;
1402         }
1403
1404         if (sa->rss_channels == 0) {
1405                 sfc_err(sa, "RSS is not configured");
1406                 return -EINVAL;
1407         }
1408
1409         if ((rss_conf->rss_key != NULL) &&
1410             (rss_conf->rss_key_len != sizeof(sa->rss_key))) {
1411                 sfc_err(sa, "RSS key size is wrong (should be %lu)",
1412                         sizeof(sa->rss_key));
1413                 return -EINVAL;
1414         }
1415
1416         if ((rss_conf->rss_hf & ~SFC_RSS_OFFLOADS) != 0) {
1417                 sfc_err(sa, "unsupported hash functions requested");
1418                 return -EINVAL;
1419         }
1420
1421         sfc_adapter_lock(sa);
1422
1423         efx_hash_types = sfc_rte_to_efx_hash_type(rss_conf->rss_hf);
1424
1425         rc = efx_rx_scale_mode_set(sa->nic, EFX_RSS_CONTEXT_DEFAULT,
1426                                    EFX_RX_HASHALG_TOEPLITZ,
1427                                    efx_hash_types, B_TRUE);
1428         if (rc != 0)
1429                 goto fail_scale_mode_set;
1430
1431         if (rss_conf->rss_key != NULL) {
1432                 if (sa->state == SFC_ADAPTER_STARTED) {
1433                         rc = efx_rx_scale_key_set(sa->nic,
1434                                                   EFX_RSS_CONTEXT_DEFAULT,
1435                                                   rss_conf->rss_key,
1436                                                   sizeof(sa->rss_key));
1437                         if (rc != 0)
1438                                 goto fail_scale_key_set;
1439                 }
1440
1441                 rte_memcpy(sa->rss_key, rss_conf->rss_key, sizeof(sa->rss_key));
1442         }
1443
1444         sa->rss_hash_types = efx_hash_types;
1445
1446         sfc_adapter_unlock(sa);
1447
1448         return 0;
1449
1450 fail_scale_key_set:
1451         if (efx_rx_scale_mode_set(sa->nic, EFX_RSS_CONTEXT_DEFAULT,
1452                                   EFX_RX_HASHALG_TOEPLITZ,
1453                                   sa->rss_hash_types, B_TRUE) != 0)
1454                 sfc_err(sa, "failed to restore RSS mode");
1455
1456 fail_scale_mode_set:
1457         sfc_adapter_unlock(sa);
1458         return -rc;
1459 }
1460
1461 static int
1462 sfc_dev_rss_reta_query(struct rte_eth_dev *dev,
1463                        struct rte_eth_rss_reta_entry64 *reta_conf,
1464                        uint16_t reta_size)
1465 {
1466         struct sfc_adapter *sa = dev->data->dev_private;
1467         struct sfc_port *port = &sa->port;
1468         int entry;
1469
1470         if ((sa->rss_support != EFX_RX_SCALE_EXCLUSIVE) || port->isolated)
1471                 return -ENOTSUP;
1472
1473         if (sa->rss_channels == 0)
1474                 return -EINVAL;
1475
1476         if (reta_size != EFX_RSS_TBL_SIZE)
1477                 return -EINVAL;
1478
1479         sfc_adapter_lock(sa);
1480
1481         for (entry = 0; entry < reta_size; entry++) {
1482                 int grp = entry / RTE_RETA_GROUP_SIZE;
1483                 int grp_idx = entry % RTE_RETA_GROUP_SIZE;
1484
1485                 if ((reta_conf[grp].mask >> grp_idx) & 1)
1486                         reta_conf[grp].reta[grp_idx] = sa->rss_tbl[entry];
1487         }
1488
1489         sfc_adapter_unlock(sa);
1490
1491         return 0;
1492 }
1493
1494 static int
1495 sfc_dev_rss_reta_update(struct rte_eth_dev *dev,
1496                         struct rte_eth_rss_reta_entry64 *reta_conf,
1497                         uint16_t reta_size)
1498 {
1499         struct sfc_adapter *sa = dev->data->dev_private;
1500         struct sfc_port *port = &sa->port;
1501         unsigned int *rss_tbl_new;
1502         uint16_t entry;
1503         int rc = 0;
1504
1505
1506         if (port->isolated)
1507                 return -ENOTSUP;
1508
1509         if (sa->rss_support != EFX_RX_SCALE_EXCLUSIVE) {
1510                 sfc_err(sa, "RSS is not available");
1511                 return -ENOTSUP;
1512         }
1513
1514         if (sa->rss_channels == 0) {
1515                 sfc_err(sa, "RSS is not configured");
1516                 return -EINVAL;
1517         }
1518
1519         if (reta_size != EFX_RSS_TBL_SIZE) {
1520                 sfc_err(sa, "RETA size is wrong (should be %u)",
1521                         EFX_RSS_TBL_SIZE);
1522                 return -EINVAL;
1523         }
1524
1525         rss_tbl_new = rte_zmalloc("rss_tbl_new", sizeof(sa->rss_tbl), 0);
1526         if (rss_tbl_new == NULL)
1527                 return -ENOMEM;
1528
1529         sfc_adapter_lock(sa);
1530
1531         rte_memcpy(rss_tbl_new, sa->rss_tbl, sizeof(sa->rss_tbl));
1532
1533         for (entry = 0; entry < reta_size; entry++) {
1534                 int grp_idx = entry % RTE_RETA_GROUP_SIZE;
1535                 struct rte_eth_rss_reta_entry64 *grp;
1536
1537                 grp = &reta_conf[entry / RTE_RETA_GROUP_SIZE];
1538
1539                 if (grp->mask & (1ull << grp_idx)) {
1540                         if (grp->reta[grp_idx] >= sa->rss_channels) {
1541                                 rc = EINVAL;
1542                                 goto bad_reta_entry;
1543                         }
1544                         rss_tbl_new[entry] = grp->reta[grp_idx];
1545                 }
1546         }
1547
1548         if (sa->state == SFC_ADAPTER_STARTED) {
1549                 rc = efx_rx_scale_tbl_set(sa->nic, EFX_RSS_CONTEXT_DEFAULT,
1550                                           rss_tbl_new, EFX_RSS_TBL_SIZE);
1551                 if (rc != 0)
1552                         goto fail_scale_tbl_set;
1553         }
1554
1555         rte_memcpy(sa->rss_tbl, rss_tbl_new, sizeof(sa->rss_tbl));
1556
1557 fail_scale_tbl_set:
1558 bad_reta_entry:
1559         sfc_adapter_unlock(sa);
1560
1561         rte_free(rss_tbl_new);
1562
1563         SFC_ASSERT(rc >= 0);
1564         return -rc;
1565 }
1566 #endif
1567
1568 static int
1569 sfc_dev_filter_ctrl(struct rte_eth_dev *dev, enum rte_filter_type filter_type,
1570                     enum rte_filter_op filter_op,
1571                     void *arg)
1572 {
1573         struct sfc_adapter *sa = dev->data->dev_private;
1574         int rc = ENOTSUP;
1575
1576         sfc_log_init(sa, "entry");
1577
1578         switch (filter_type) {
1579         case RTE_ETH_FILTER_NONE:
1580                 sfc_err(sa, "Global filters configuration not supported");
1581                 break;
1582         case RTE_ETH_FILTER_MACVLAN:
1583                 sfc_err(sa, "MACVLAN filters not supported");
1584                 break;
1585         case RTE_ETH_FILTER_ETHERTYPE:
1586                 sfc_err(sa, "EtherType filters not supported");
1587                 break;
1588         case RTE_ETH_FILTER_FLEXIBLE:
1589                 sfc_err(sa, "Flexible filters not supported");
1590                 break;
1591         case RTE_ETH_FILTER_SYN:
1592                 sfc_err(sa, "SYN filters not supported");
1593                 break;
1594         case RTE_ETH_FILTER_NTUPLE:
1595                 sfc_err(sa, "NTUPLE filters not supported");
1596                 break;
1597         case RTE_ETH_FILTER_TUNNEL:
1598                 sfc_err(sa, "Tunnel filters not supported");
1599                 break;
1600         case RTE_ETH_FILTER_FDIR:
1601                 sfc_err(sa, "Flow Director filters not supported");
1602                 break;
1603         case RTE_ETH_FILTER_HASH:
1604                 sfc_err(sa, "Hash filters not supported");
1605                 break;
1606         case RTE_ETH_FILTER_GENERIC:
1607                 if (filter_op != RTE_ETH_FILTER_GET) {
1608                         rc = EINVAL;
1609                 } else {
1610                         *(const void **)arg = &sfc_flow_ops;
1611                         rc = 0;
1612                 }
1613                 break;
1614         default:
1615                 sfc_err(sa, "Unknown filter type %u", filter_type);
1616                 break;
1617         }
1618
1619         sfc_log_init(sa, "exit: %d", -rc);
1620         SFC_ASSERT(rc >= 0);
1621         return -rc;
1622 }
1623
1624 static const struct eth_dev_ops sfc_eth_dev_ops = {
1625         .dev_configure                  = sfc_dev_configure,
1626         .dev_start                      = sfc_dev_start,
1627         .dev_stop                       = sfc_dev_stop,
1628         .dev_set_link_up                = sfc_dev_set_link_up,
1629         .dev_set_link_down              = sfc_dev_set_link_down,
1630         .dev_close                      = sfc_dev_close,
1631         .promiscuous_enable             = sfc_dev_promisc_enable,
1632         .promiscuous_disable            = sfc_dev_promisc_disable,
1633         .allmulticast_enable            = sfc_dev_allmulti_enable,
1634         .allmulticast_disable           = sfc_dev_allmulti_disable,
1635         .link_update                    = sfc_dev_link_update,
1636         .stats_get                      = sfc_stats_get,
1637         .stats_reset                    = sfc_stats_reset,
1638         .xstats_get                     = sfc_xstats_get,
1639         .xstats_reset                   = sfc_stats_reset,
1640         .xstats_get_names               = sfc_xstats_get_names,
1641         .dev_infos_get                  = sfc_dev_infos_get,
1642         .dev_supported_ptypes_get       = sfc_dev_supported_ptypes_get,
1643         .mtu_set                        = sfc_dev_set_mtu,
1644         .rx_queue_start                 = sfc_rx_queue_start,
1645         .rx_queue_stop                  = sfc_rx_queue_stop,
1646         .tx_queue_start                 = sfc_tx_queue_start,
1647         .tx_queue_stop                  = sfc_tx_queue_stop,
1648         .rx_queue_setup                 = sfc_rx_queue_setup,
1649         .rx_queue_release               = sfc_rx_queue_release,
1650         .rx_queue_count                 = sfc_rx_queue_count,
1651         .rx_descriptor_done             = sfc_rx_descriptor_done,
1652         .rx_descriptor_status           = sfc_rx_descriptor_status,
1653         .tx_descriptor_status           = sfc_tx_descriptor_status,
1654         .tx_queue_setup                 = sfc_tx_queue_setup,
1655         .tx_queue_release               = sfc_tx_queue_release,
1656         .flow_ctrl_get                  = sfc_flow_ctrl_get,
1657         .flow_ctrl_set                  = sfc_flow_ctrl_set,
1658         .mac_addr_set                   = sfc_mac_addr_set,
1659         .udp_tunnel_port_add            = sfc_dev_udp_tunnel_port_add,
1660         .udp_tunnel_port_del            = sfc_dev_udp_tunnel_port_del,
1661 #if EFSYS_OPT_RX_SCALE
1662         .reta_update                    = sfc_dev_rss_reta_update,
1663         .reta_query                     = sfc_dev_rss_reta_query,
1664         .rss_hash_update                = sfc_dev_rss_hash_update,
1665         .rss_hash_conf_get              = sfc_dev_rss_hash_conf_get,
1666 #endif
1667         .filter_ctrl                    = sfc_dev_filter_ctrl,
1668         .set_mc_addr_list               = sfc_set_mc_addr_list,
1669         .rxq_info_get                   = sfc_rx_queue_info_get,
1670         .txq_info_get                   = sfc_tx_queue_info_get,
1671         .fw_version_get                 = sfc_fw_version_get,
1672         .xstats_get_by_id               = sfc_xstats_get_by_id,
1673         .xstats_get_names_by_id         = sfc_xstats_get_names_by_id,
1674 };
1675
1676 /**
1677  * Duplicate a string in potentially shared memory required for
1678  * multi-process support.
1679  *
1680  * strdup() allocates from process-local heap/memory.
1681  */
1682 static char *
1683 sfc_strdup(const char *str)
1684 {
1685         size_t size;
1686         char *copy;
1687
1688         if (str == NULL)
1689                 return NULL;
1690
1691         size = strlen(str) + 1;
1692         copy = rte_malloc(__func__, size, 0);
1693         if (copy != NULL)
1694                 rte_memcpy(copy, str, size);
1695
1696         return copy;
1697 }
1698
1699 static int
1700 sfc_eth_dev_set_ops(struct rte_eth_dev *dev)
1701 {
1702         struct sfc_adapter *sa = dev->data->dev_private;
1703         unsigned int avail_caps = 0;
1704         const char *rx_name = NULL;
1705         const char *tx_name = NULL;
1706         int rc;
1707
1708         switch (sa->family) {
1709         case EFX_FAMILY_HUNTINGTON:
1710         case EFX_FAMILY_MEDFORD:
1711                 avail_caps |= SFC_DP_HW_FW_CAP_EF10;
1712                 break;
1713         default:
1714                 break;
1715         }
1716
1717         rc = sfc_kvargs_process(sa, SFC_KVARG_RX_DATAPATH,
1718                                 sfc_kvarg_string_handler, &rx_name);
1719         if (rc != 0)
1720                 goto fail_kvarg_rx_datapath;
1721
1722         if (rx_name != NULL) {
1723                 sa->dp_rx = sfc_dp_find_rx_by_name(&sfc_dp_head, rx_name);
1724                 if (sa->dp_rx == NULL) {
1725                         sfc_err(sa, "Rx datapath %s not found", rx_name);
1726                         rc = ENOENT;
1727                         goto fail_dp_rx;
1728                 }
1729                 if (!sfc_dp_match_hw_fw_caps(&sa->dp_rx->dp, avail_caps)) {
1730                         sfc_err(sa,
1731                                 "Insufficient Hw/FW capabilities to use Rx datapath %s",
1732                                 rx_name);
1733                         rc = EINVAL;
1734                         goto fail_dp_rx_caps;
1735                 }
1736         } else {
1737                 sa->dp_rx = sfc_dp_find_rx_by_caps(&sfc_dp_head, avail_caps);
1738                 if (sa->dp_rx == NULL) {
1739                         sfc_err(sa, "Rx datapath by caps %#x not found",
1740                                 avail_caps);
1741                         rc = ENOENT;
1742                         goto fail_dp_rx;
1743                 }
1744         }
1745
1746         sa->dp_rx_name = sfc_strdup(sa->dp_rx->dp.name);
1747         if (sa->dp_rx_name == NULL) {
1748                 rc = ENOMEM;
1749                 goto fail_dp_rx_name;
1750         }
1751
1752         sfc_info(sa, "use %s Rx datapath", sa->dp_rx_name);
1753
1754         dev->rx_pkt_burst = sa->dp_rx->pkt_burst;
1755
1756         rc = sfc_kvargs_process(sa, SFC_KVARG_TX_DATAPATH,
1757                                 sfc_kvarg_string_handler, &tx_name);
1758         if (rc != 0)
1759                 goto fail_kvarg_tx_datapath;
1760
1761         if (tx_name != NULL) {
1762                 sa->dp_tx = sfc_dp_find_tx_by_name(&sfc_dp_head, tx_name);
1763                 if (sa->dp_tx == NULL) {
1764                         sfc_err(sa, "Tx datapath %s not found", tx_name);
1765                         rc = ENOENT;
1766                         goto fail_dp_tx;
1767                 }
1768                 if (!sfc_dp_match_hw_fw_caps(&sa->dp_tx->dp, avail_caps)) {
1769                         sfc_err(sa,
1770                                 "Insufficient Hw/FW capabilities to use Tx datapath %s",
1771                                 tx_name);
1772                         rc = EINVAL;
1773                         goto fail_dp_tx_caps;
1774                 }
1775         } else {
1776                 sa->dp_tx = sfc_dp_find_tx_by_caps(&sfc_dp_head, avail_caps);
1777                 if (sa->dp_tx == NULL) {
1778                         sfc_err(sa, "Tx datapath by caps %#x not found",
1779                                 avail_caps);
1780                         rc = ENOENT;
1781                         goto fail_dp_tx;
1782                 }
1783         }
1784
1785         sa->dp_tx_name = sfc_strdup(sa->dp_tx->dp.name);
1786         if (sa->dp_tx_name == NULL) {
1787                 rc = ENOMEM;
1788                 goto fail_dp_tx_name;
1789         }
1790
1791         sfc_info(sa, "use %s Tx datapath", sa->dp_tx_name);
1792
1793         dev->tx_pkt_burst = sa->dp_tx->pkt_burst;
1794
1795         dev->dev_ops = &sfc_eth_dev_ops;
1796
1797         return 0;
1798
1799 fail_dp_tx_name:
1800 fail_dp_tx_caps:
1801         sa->dp_tx = NULL;
1802
1803 fail_dp_tx:
1804 fail_kvarg_tx_datapath:
1805         rte_free(sa->dp_rx_name);
1806         sa->dp_rx_name = NULL;
1807
1808 fail_dp_rx_name:
1809 fail_dp_rx_caps:
1810         sa->dp_rx = NULL;
1811
1812 fail_dp_rx:
1813 fail_kvarg_rx_datapath:
1814         return rc;
1815 }
1816
1817 static void
1818 sfc_eth_dev_clear_ops(struct rte_eth_dev *dev)
1819 {
1820         struct sfc_adapter *sa = dev->data->dev_private;
1821
1822         dev->dev_ops = NULL;
1823         dev->rx_pkt_burst = NULL;
1824         dev->tx_pkt_burst = NULL;
1825
1826         rte_free(sa->dp_tx_name);
1827         sa->dp_tx_name = NULL;
1828         sa->dp_tx = NULL;
1829
1830         rte_free(sa->dp_rx_name);
1831         sa->dp_rx_name = NULL;
1832         sa->dp_rx = NULL;
1833 }
1834
1835 static const struct eth_dev_ops sfc_eth_dev_secondary_ops = {
1836         .rxq_info_get                   = sfc_rx_queue_info_get,
1837         .txq_info_get                   = sfc_tx_queue_info_get,
1838 };
1839
1840 static int
1841 sfc_eth_dev_secondary_set_ops(struct rte_eth_dev *dev)
1842 {
1843         /*
1844          * Device private data has really many process-local pointers.
1845          * Below code should be extremely careful to use data located
1846          * in shared memory only.
1847          */
1848         struct sfc_adapter *sa = dev->data->dev_private;
1849         const struct sfc_dp_rx *dp_rx;
1850         const struct sfc_dp_tx *dp_tx;
1851         int rc;
1852
1853         dp_rx = sfc_dp_find_rx_by_name(&sfc_dp_head, sa->dp_rx_name);
1854         if (dp_rx == NULL) {
1855                 sfc_err(sa, "cannot find %s Rx datapath", sa->dp_tx_name);
1856                 rc = ENOENT;
1857                 goto fail_dp_rx;
1858         }
1859         if (~dp_rx->features & SFC_DP_RX_FEAT_MULTI_PROCESS) {
1860                 sfc_err(sa, "%s Rx datapath does not support multi-process",
1861                         sa->dp_tx_name);
1862                 rc = EINVAL;
1863                 goto fail_dp_rx_multi_process;
1864         }
1865
1866         dp_tx = sfc_dp_find_tx_by_name(&sfc_dp_head, sa->dp_tx_name);
1867         if (dp_tx == NULL) {
1868                 sfc_err(sa, "cannot find %s Tx datapath", sa->dp_tx_name);
1869                 rc = ENOENT;
1870                 goto fail_dp_tx;
1871         }
1872         if (~dp_tx->features & SFC_DP_TX_FEAT_MULTI_PROCESS) {
1873                 sfc_err(sa, "%s Tx datapath does not support multi-process",
1874                         sa->dp_tx_name);
1875                 rc = EINVAL;
1876                 goto fail_dp_tx_multi_process;
1877         }
1878
1879         dev->rx_pkt_burst = dp_rx->pkt_burst;
1880         dev->tx_pkt_burst = dp_tx->pkt_burst;
1881         dev->dev_ops = &sfc_eth_dev_secondary_ops;
1882
1883         return 0;
1884
1885 fail_dp_tx_multi_process:
1886 fail_dp_tx:
1887 fail_dp_rx_multi_process:
1888 fail_dp_rx:
1889         return rc;
1890 }
1891
1892 static void
1893 sfc_eth_dev_secondary_clear_ops(struct rte_eth_dev *dev)
1894 {
1895         dev->dev_ops = NULL;
1896         dev->tx_pkt_burst = NULL;
1897         dev->rx_pkt_burst = NULL;
1898 }
1899
1900 static void
1901 sfc_register_dp(void)
1902 {
1903         /* Register once */
1904         if (TAILQ_EMPTY(&sfc_dp_head)) {
1905                 /* Prefer EF10 datapath */
1906                 sfc_dp_register(&sfc_dp_head, &sfc_ef10_rx.dp);
1907                 sfc_dp_register(&sfc_dp_head, &sfc_efx_rx.dp);
1908
1909                 sfc_dp_register(&sfc_dp_head, &sfc_ef10_tx.dp);
1910                 sfc_dp_register(&sfc_dp_head, &sfc_efx_tx.dp);
1911                 sfc_dp_register(&sfc_dp_head, &sfc_ef10_simple_tx.dp);
1912         }
1913 }
1914
1915 static int
1916 sfc_eth_dev_init(struct rte_eth_dev *dev)
1917 {
1918         struct sfc_adapter *sa = dev->data->dev_private;
1919         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
1920         int rc;
1921         const efx_nic_cfg_t *encp;
1922         const struct ether_addr *from;
1923
1924         sfc_register_dp();
1925
1926         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1927                 return -sfc_eth_dev_secondary_set_ops(dev);
1928
1929         /* Required for logging */
1930         sa->pci_addr = pci_dev->addr;
1931         sa->port_id = dev->data->port_id;
1932
1933         sa->eth_dev = dev;
1934
1935         /* Copy PCI device info to the dev->data */
1936         rte_eth_copy_pci_info(dev, pci_dev);
1937
1938         rc = sfc_kvargs_parse(sa);
1939         if (rc != 0)
1940                 goto fail_kvargs_parse;
1941
1942         rc = sfc_kvargs_process(sa, SFC_KVARG_DEBUG_INIT,
1943                                 sfc_kvarg_bool_handler, &sa->debug_init);
1944         if (rc != 0)
1945                 goto fail_kvarg_debug_init;
1946
1947         sfc_log_init(sa, "entry");
1948
1949         dev->data->mac_addrs = rte_zmalloc("sfc", ETHER_ADDR_LEN, 0);
1950         if (dev->data->mac_addrs == NULL) {
1951                 rc = ENOMEM;
1952                 goto fail_mac_addrs;
1953         }
1954
1955         sfc_adapter_lock_init(sa);
1956         sfc_adapter_lock(sa);
1957
1958         sfc_log_init(sa, "probing");
1959         rc = sfc_probe(sa);
1960         if (rc != 0)
1961                 goto fail_probe;
1962
1963         sfc_log_init(sa, "set device ops");
1964         rc = sfc_eth_dev_set_ops(dev);
1965         if (rc != 0)
1966                 goto fail_set_ops;
1967
1968         sfc_log_init(sa, "attaching");
1969         rc = sfc_attach(sa);
1970         if (rc != 0)
1971                 goto fail_attach;
1972
1973         encp = efx_nic_cfg_get(sa->nic);
1974
1975         /*
1976          * The arguments are really reverse order in comparison to
1977          * Linux kernel. Copy from NIC config to Ethernet device data.
1978          */
1979         from = (const struct ether_addr *)(encp->enc_mac_addr);
1980         ether_addr_copy(from, &dev->data->mac_addrs[0]);
1981
1982         sfc_adapter_unlock(sa);
1983
1984         sfc_log_init(sa, "done");
1985         return 0;
1986
1987 fail_attach:
1988         sfc_eth_dev_clear_ops(dev);
1989
1990 fail_set_ops:
1991         sfc_unprobe(sa);
1992
1993 fail_probe:
1994         sfc_adapter_unlock(sa);
1995         sfc_adapter_lock_fini(sa);
1996         rte_free(dev->data->mac_addrs);
1997         dev->data->mac_addrs = NULL;
1998
1999 fail_mac_addrs:
2000 fail_kvarg_debug_init:
2001         sfc_kvargs_cleanup(sa);
2002
2003 fail_kvargs_parse:
2004         sfc_log_init(sa, "failed %d", rc);
2005         SFC_ASSERT(rc > 0);
2006         return -rc;
2007 }
2008
2009 static int
2010 sfc_eth_dev_uninit(struct rte_eth_dev *dev)
2011 {
2012         struct sfc_adapter *sa;
2013
2014         if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
2015                 sfc_eth_dev_secondary_clear_ops(dev);
2016                 return 0;
2017         }
2018
2019         sa = dev->data->dev_private;
2020         sfc_log_init(sa, "entry");
2021
2022         sfc_adapter_lock(sa);
2023
2024         sfc_eth_dev_clear_ops(dev);
2025
2026         sfc_detach(sa);
2027         sfc_unprobe(sa);
2028
2029         rte_free(dev->data->mac_addrs);
2030         dev->data->mac_addrs = NULL;
2031
2032         sfc_kvargs_cleanup(sa);
2033
2034         sfc_adapter_unlock(sa);
2035         sfc_adapter_lock_fini(sa);
2036
2037         sfc_log_init(sa, "done");
2038
2039         /* Required for logging, so cleanup last */
2040         sa->eth_dev = NULL;
2041         return 0;
2042 }
2043
2044 static const struct rte_pci_id pci_id_sfc_efx_map[] = {
2045         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_FARMINGDALE) },
2046         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_FARMINGDALE_VF) },
2047         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_GREENPORT) },
2048         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_GREENPORT_VF) },
2049         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_MEDFORD) },
2050         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_MEDFORD_VF) },
2051         { .vendor_id = 0 /* sentinel */ }
2052 };
2053
2054 static int sfc_eth_dev_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
2055         struct rte_pci_device *pci_dev)
2056 {
2057         return rte_eth_dev_pci_generic_probe(pci_dev,
2058                 sizeof(struct sfc_adapter), sfc_eth_dev_init);
2059 }
2060
2061 static int sfc_eth_dev_pci_remove(struct rte_pci_device *pci_dev)
2062 {
2063         return rte_eth_dev_pci_generic_remove(pci_dev, sfc_eth_dev_uninit);
2064 }
2065
2066 static struct rte_pci_driver sfc_efx_pmd = {
2067         .id_table = pci_id_sfc_efx_map,
2068         .drv_flags =
2069                 RTE_PCI_DRV_INTR_LSC |
2070                 RTE_PCI_DRV_NEED_MAPPING,
2071         .probe = sfc_eth_dev_pci_probe,
2072         .remove = sfc_eth_dev_pci_remove,
2073 };
2074
2075 RTE_PMD_REGISTER_PCI(net_sfc_efx, sfc_efx_pmd);
2076 RTE_PMD_REGISTER_PCI_TABLE(net_sfc_efx, pci_id_sfc_efx_map);
2077 RTE_PMD_REGISTER_KMOD_DEP(net_sfc_efx, "* igb_uio | uio_pci_generic | vfio-pci");
2078 RTE_PMD_REGISTER_PARAM_STRING(net_sfc_efx,
2079         SFC_KVARG_RX_DATAPATH "=" SFC_KVARG_VALUES_RX_DATAPATH " "
2080         SFC_KVARG_TX_DATAPATH "=" SFC_KVARG_VALUES_TX_DATAPATH " "
2081         SFC_KVARG_PERF_PROFILE "=" SFC_KVARG_VALUES_PERF_PROFILE " "
2082         SFC_KVARG_STATS_UPDATE_PERIOD_MS "=<long> "
2083         SFC_KVARG_MCDI_LOGGING "=" SFC_KVARG_VALUES_BOOL " "
2084         SFC_KVARG_DEBUG_INIT "=" SFC_KVARG_VALUES_BOOL);