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 #include <rte_string_fns.h>
  17 #include <rte_ether.h>
  18
  19 #include "efx.h"
  20
  21 #include "sfc.h"
  22 #include "sfc_debug.h"
  23 #include "sfc_log.h"
  24 #include "sfc_kvargs.h"
  25 #include "sfc_ev.h"
  26 #include "sfc_rx.h"
  27 #include "sfc_tx.h"
  28 #include "sfc_flow.h"
  29 #include "sfc_dp.h"
  30 #include "sfc_dp_rx.h"
  31
  32 uint32_t sfc_logtype_driver;
  33
  34 static struct sfc_dp_list sfc_dp_head =
  35         TAILQ_HEAD_INITIALIZER(sfc_dp_head);
  36
  37 static int
  38 sfc_fw_version_get(struct rte_eth_dev *dev, char *fw_version, size_t fw_size)
  39 {
  40         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
  41         efx_nic_fw_info_t enfi;
  42         int ret;
  43         int rc;
  44
  45         /*
  46          * Return value of the callback is likely supposed to be
  47          * equal to or greater than 0, nevertheless, if an error
  48          * occurs, it will be desirable to pass it to the caller
  49          */
  50         if ((fw_version == NULL) || (fw_size == 0))
  51                 return -EINVAL;
  52
  53         rc = efx_nic_get_fw_version(sa->nic, &enfi);
  54         if (rc != 0)
  55                 return -rc;
  56
  57         ret = snprintf(fw_version, fw_size,
  58                        "%" PRIu16 ".%" PRIu16 ".%" PRIu16 ".%" PRIu16,
  59                        enfi.enfi_mc_fw_version[0], enfi.enfi_mc_fw_version[1],
  60                        enfi.enfi_mc_fw_version[2], enfi.enfi_mc_fw_version[3]);
  61         if (ret < 0)
  62                 return ret;
  63
  64         if (enfi.enfi_dpcpu_fw_ids_valid) {
  65                 size_t dpcpu_fw_ids_offset = MIN(fw_size - 1, (size_t)ret);
  66                 int ret_extra;
  67
  68                 ret_extra = snprintf(fw_version + dpcpu_fw_ids_offset,
  69                                      fw_size - dpcpu_fw_ids_offset,
  70                                      " rx%" PRIx16 " tx%" PRIx16,
  71                                      enfi.enfi_rx_dpcpu_fw_id,
  72                                      enfi.enfi_tx_dpcpu_fw_id);
  73                 if (ret_extra < 0)
  74                         return ret_extra;
  75
  76                 ret += ret_extra;
  77         }
  78
  79         if (fw_size < (size_t)(++ret))
  80                 return ret;
  81         else
  82                 return 0;
  83 }
  84
  85 static void
  86 sfc_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
  87 {
  88         const struct sfc_adapter_priv *sap = sfc_adapter_priv_by_eth_dev(dev);
  89         struct sfc_adapter_shared *sas = sfc_adapter_shared_by_eth_dev(dev);
  90         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
  91         struct sfc_rss *rss = &sas->rss;
  92         uint64_t txq_offloads_def = 0;
  93
  94         sfc_log_init(sa, "entry");
  95
  96         dev_info->min_mtu = ETHER_MIN_MTU;
  97         dev_info->max_mtu = EFX_MAC_SDU_MAX;
  98
  99         dev_info->max_rx_pktlen = EFX_MAC_PDU_MAX;
 100
 101         /* Autonegotiation may be disabled */
 102         dev_info->speed_capa = ETH_LINK_SPEED_FIXED;
 103         if (sa->port.phy_adv_cap_mask & (1u << EFX_PHY_CAP_1000FDX))
 104                 dev_info->speed_capa |= ETH_LINK_SPEED_1G;
 105         if (sa->port.phy_adv_cap_mask & (1u << EFX_PHY_CAP_10000FDX))
 106                 dev_info->speed_capa |= ETH_LINK_SPEED_10G;
 107         if (sa->port.phy_adv_cap_mask & (1u << EFX_PHY_CAP_25000FDX))
 108                 dev_info->speed_capa |= ETH_LINK_SPEED_25G;
 109         if (sa->port.phy_adv_cap_mask & (1u << EFX_PHY_CAP_40000FDX))
 110                 dev_info->speed_capa |= ETH_LINK_SPEED_40G;
 111         if (sa->port.phy_adv_cap_mask & (1u << EFX_PHY_CAP_50000FDX))
 112                 dev_info->speed_capa |= ETH_LINK_SPEED_50G;
 113         if (sa->port.phy_adv_cap_mask & (1u << EFX_PHY_CAP_100000FDX))
 114                 dev_info->speed_capa |= ETH_LINK_SPEED_100G;
 115
 116         dev_info->max_rx_queues = sa->rxq_max;
 117         dev_info->max_tx_queues = sa->txq_max;
 118
 119         /* By default packets are dropped if no descriptors are available */
 120         dev_info->default_rxconf.rx_drop_en = 1;
 121
 122         dev_info->rx_queue_offload_capa = sfc_rx_get_queue_offload_caps(sa);
 123
 124         /*
 125          * rx_offload_capa includes both device and queue offloads since
 126          * the latter may be requested on a per device basis which makes
 127          * sense when some offloads are needed to be set on all queues.
 128          */
 129         dev_info->rx_offload_capa = sfc_rx_get_dev_offload_caps(sa) |
 130                                     dev_info->rx_queue_offload_capa;
 131
 132         dev_info->tx_queue_offload_capa = sfc_tx_get_queue_offload_caps(sa);
 133
 134         /*
 135          * tx_offload_capa includes both device and queue offloads since
 136          * the latter may be requested on a per device basis which makes
 137          * sense when some offloads are needed to be set on all queues.
 138          */
 139         dev_info->tx_offload_capa = sfc_tx_get_dev_offload_caps(sa) |
 140                                     dev_info->tx_queue_offload_capa;
 141
 142         if (dev_info->tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 143                 txq_offloads_def |= DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 144
 145         dev_info->default_txconf.offloads |= txq_offloads_def;
 146
 147         if (rss->context_type != EFX_RX_SCALE_UNAVAILABLE) {
 148                 uint64_t rte_hf = 0;
 149                 unsigned int i;
 150
 151                 for (i = 0; i < rss->hf_map_nb_entries; ++i)
 152                         rte_hf |= rss->hf_map[i].rte;
 153
 154                 dev_info->reta_size = EFX_RSS_TBL_SIZE;
 155                 dev_info->hash_key_size = EFX_RSS_KEY_SIZE;
 156                 dev_info->flow_type_rss_offloads = rte_hf;
 157         }
 158
 159         /* Initialize to hardware limits */
 160         dev_info->rx_desc_lim.nb_max = sa->rxq_max_entries;
 161         dev_info->rx_desc_lim.nb_min = sa->rxq_min_entries;
 162         /* The RXQ hardware requires that the descriptor count is a power
 163          * of 2, but rx_desc_lim cannot properly describe that constraint.
 164          */
 165         dev_info->rx_desc_lim.nb_align = sa->rxq_min_entries;
 166
 167         /* Initialize to hardware limits */
 168         dev_info->tx_desc_lim.nb_max = sa->txq_max_entries;
 169         dev_info->tx_desc_lim.nb_min = sa->txq_min_entries;
 170         /*
 171          * The TXQ hardware requires that the descriptor count is a power
 172          * of 2, but tx_desc_lim cannot properly describe that constraint
 173          */
 174         dev_info->tx_desc_lim.nb_align = sa->txq_min_entries;
 175
 176         if (sap->dp_rx->get_dev_info != NULL)
 177                 sap->dp_rx->get_dev_info(dev_info);
 178         if (sap->dp_tx->get_dev_info != NULL)
 179                 sap->dp_tx->get_dev_info(dev_info);
 180
 181         dev_info->dev_capa = RTE_ETH_DEV_CAPA_RUNTIME_RX_QUEUE_SETUP |
 182                              RTE_ETH_DEV_CAPA_RUNTIME_TX_QUEUE_SETUP;
 183 }
 184
 185 static const uint32_t *
 186 sfc_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 187 {
 188         const struct sfc_adapter_priv *sap = sfc_adapter_priv_by_eth_dev(dev);
 189
 190         return sap->dp_rx->supported_ptypes_get(sap->shared->tunnel_encaps);
 191 }
 192
 193 static int
 194 sfc_dev_configure(struct rte_eth_dev *dev)
 195 {
 196         struct rte_eth_dev_data *dev_data = dev->data;
 197         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 198         int rc;
 199
 200         sfc_log_init(sa, "entry n_rxq=%u n_txq=%u",
 201                      dev_data->nb_rx_queues, dev_data->nb_tx_queues);
 202
 203         sfc_adapter_lock(sa);
 204         switch (sa->state) {
 205         case SFC_ADAPTER_CONFIGURED:
 206                 /* FALLTHROUGH */
 207         case SFC_ADAPTER_INITIALIZED:
 208                 rc = sfc_configure(sa);
 209                 break;
 210         default:
 211                 sfc_err(sa, "unexpected adapter state %u to configure",
 212                         sa->state);
 213                 rc = EINVAL;
 214                 break;
 215         }
 216         sfc_adapter_unlock(sa);
 217
 218         sfc_log_init(sa, "done %d", rc);
 219         SFC_ASSERT(rc >= 0);
 220         return -rc;
 221 }
 222
 223 static int
 224 sfc_dev_start(struct rte_eth_dev *dev)
 225 {
 226         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 227         int rc;
 228
 229         sfc_log_init(sa, "entry");
 230
 231         sfc_adapter_lock(sa);
 232         rc = sfc_start(sa);
 233         sfc_adapter_unlock(sa);
 234
 235         sfc_log_init(sa, "done %d", rc);
 236         SFC_ASSERT(rc >= 0);
 237         return -rc;
 238 }
 239
 240 static int
 241 sfc_dev_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 242 {
 243         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 244         struct rte_eth_link current_link;
 245         int ret;
 246
 247         sfc_log_init(sa, "entry");
 248
 249         if (sa->state != SFC_ADAPTER_STARTED) {
 250                 sfc_port_link_mode_to_info(EFX_LINK_UNKNOWN, &current_link);
 251         } else if (wait_to_complete) {
 252                 efx_link_mode_t link_mode;
 253
 254                 if (efx_port_poll(sa->nic, &link_mode) != 0)
 255                         link_mode = EFX_LINK_UNKNOWN;
 256                 sfc_port_link_mode_to_info(link_mode, &current_link);
 257
 258         } else {
 259                 sfc_ev_mgmt_qpoll(sa);
 260                 rte_eth_linkstatus_get(dev, &current_link);
 261         }
 262
 263         ret = rte_eth_linkstatus_set(dev, &current_link);
 264         if (ret == 0)
 265                 sfc_notice(sa, "Link status is %s",
 266                            current_link.link_status ? "UP" : "DOWN");
 267
 268         return ret;
 269 }
 270
 271 static void
 272 sfc_dev_stop(struct rte_eth_dev *dev)
 273 {
 274         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 275
 276         sfc_log_init(sa, "entry");
 277
 278         sfc_adapter_lock(sa);
 279         sfc_stop(sa);
 280         sfc_adapter_unlock(sa);
 281
 282         sfc_log_init(sa, "done");
 283 }
 284
 285 static int
 286 sfc_dev_set_link_up(struct rte_eth_dev *dev)
 287 {
 288         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 289         int rc;
 290
 291         sfc_log_init(sa, "entry");
 292
 293         sfc_adapter_lock(sa);
 294         rc = sfc_start(sa);
 295         sfc_adapter_unlock(sa);
 296
 297         SFC_ASSERT(rc >= 0);
 298         return -rc;
 299 }
 300
 301 static int
 302 sfc_dev_set_link_down(struct rte_eth_dev *dev)
 303 {
 304         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 305
 306         sfc_log_init(sa, "entry");
 307
 308         sfc_adapter_lock(sa);
 309         sfc_stop(sa);
 310         sfc_adapter_unlock(sa);
 311
 312         return 0;
 313 }
 314
 315 static void
 316 sfc_dev_close(struct rte_eth_dev *dev)
 317 {
 318         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 319
 320         sfc_log_init(sa, "entry");
 321
 322         sfc_adapter_lock(sa);
 323         switch (sa->state) {
 324         case SFC_ADAPTER_STARTED:
 325                 sfc_stop(sa);
 326                 SFC_ASSERT(sa->state == SFC_ADAPTER_CONFIGURED);
 327                 /* FALLTHROUGH */
 328         case SFC_ADAPTER_CONFIGURED:
 329                 sfc_close(sa);
 330                 SFC_ASSERT(sa->state == SFC_ADAPTER_INITIALIZED);
 331                 /* FALLTHROUGH */
 332         case SFC_ADAPTER_INITIALIZED:
 333                 break;
 334         default:
 335                 sfc_err(sa, "unexpected adapter state %u on close", sa->state);
 336                 break;
 337         }
 338         sfc_adapter_unlock(sa);
 339
 340         sfc_log_init(sa, "done");
 341 }
 342
 343 static void
 344 sfc_dev_filter_set(struct rte_eth_dev *dev, enum sfc_dev_filter_mode mode,
 345                    boolean_t enabled)
 346 {
 347         struct sfc_port *port;
 348         boolean_t *toggle;
 349         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 350         boolean_t allmulti = (mode == SFC_DEV_FILTER_MODE_ALLMULTI);
 351         const char *desc = (allmulti) ? "all-multi" : "promiscuous";
 352
 353         sfc_adapter_lock(sa);
 354
 355         port = &sa->port;
 356         toggle = (allmulti) ? (&port->allmulti) : (&port->promisc);
 357
 358         if (*toggle != enabled) {
 359                 *toggle = enabled;
 360
 361                 if (sfc_sa2shared(sa)->isolated) {
 362                         sfc_warn(sa, "isolated mode is active on the port");
 363                         sfc_warn(sa, "the change is to be applied on the next "
 364                                      "start provided that isolated mode is "
 365                                      "disabled prior the next start");
 366                 } else if ((sa->state == SFC_ADAPTER_STARTED) &&
 367                            (sfc_set_rx_mode(sa) != 0)) {
 368                         *toggle = !(enabled);
 369                         sfc_warn(sa, "Failed to %s %s mode",
 370                                  ((enabled) ? "enable" : "disable"), desc);
 371                 }
 372         }
 373
 374         sfc_adapter_unlock(sa);
 375 }
 376
 377 static void
 378 sfc_dev_promisc_enable(struct rte_eth_dev *dev)
 379 {
 380         sfc_dev_filter_set(dev, SFC_DEV_FILTER_MODE_PROMISC, B_TRUE);
 381 }
 382
 383 static void
 384 sfc_dev_promisc_disable(struct rte_eth_dev *dev)
 385 {
 386         sfc_dev_filter_set(dev, SFC_DEV_FILTER_MODE_PROMISC, B_FALSE);
 387 }
 388
 389 static void
 390 sfc_dev_allmulti_enable(struct rte_eth_dev *dev)
 391 {
 392         sfc_dev_filter_set(dev, SFC_DEV_FILTER_MODE_ALLMULTI, B_TRUE);
 393 }
 394
 395 static void
 396 sfc_dev_allmulti_disable(struct rte_eth_dev *dev)
 397 {
 398         sfc_dev_filter_set(dev, SFC_DEV_FILTER_MODE_ALLMULTI, B_FALSE);
 399 }
 400
 401 static int
 402 sfc_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id,
 403                    uint16_t nb_rx_desc, unsigned int socket_id,
 404                    const struct rte_eth_rxconf *rx_conf,
 405                    struct rte_mempool *mb_pool)
 406 {
 407         struct sfc_adapter_shared *sas = sfc_adapter_shared_by_eth_dev(dev);
 408         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 409         int rc;
 410
 411         sfc_log_init(sa, "RxQ=%u nb_rx_desc=%u socket_id=%u",
 412                      rx_queue_id, nb_rx_desc, socket_id);
 413
 414         sfc_adapter_lock(sa);
 415
 416         rc = sfc_rx_qinit(sa, rx_queue_id, nb_rx_desc, socket_id,
 417                           rx_conf, mb_pool);
 418         if (rc != 0)
 419                 goto fail_rx_qinit;
 420
 421         dev->data->rx_queues[rx_queue_id] = sas->rxq_info[rx_queue_id].dp;
 422
 423         sfc_adapter_unlock(sa);
 424
 425         return 0;
 426
 427 fail_rx_qinit:
 428         sfc_adapter_unlock(sa);
 429         SFC_ASSERT(rc > 0);
 430         return -rc;
 431 }
 432
 433 static void
 434 sfc_rx_queue_release(void *queue)
 435 {
 436         struct sfc_dp_rxq *dp_rxq = queue;
 437         struct sfc_rxq *rxq;
 438         struct sfc_adapter *sa;
 439         unsigned int sw_index;
 440
 441         if (dp_rxq == NULL)
 442                 return;
 443
 444         rxq = sfc_rxq_by_dp_rxq(dp_rxq);
 445         sa = rxq->evq->sa;
 446         sfc_adapter_lock(sa);
 447
 448         sw_index = dp_rxq->dpq.queue_id;
 449
 450         sfc_log_init(sa, "RxQ=%u", sw_index);
 451
 452         sfc_rx_qfini(sa, sw_index);
 453
 454         sfc_adapter_unlock(sa);
 455 }
 456
 457 static int
 458 sfc_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id,
 459                    uint16_t nb_tx_desc, unsigned int socket_id,
 460                    const struct rte_eth_txconf *tx_conf)
 461 {
 462         struct sfc_adapter_shared *sas = sfc_adapter_shared_by_eth_dev(dev);
 463         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 464         int rc;
 465
 466         sfc_log_init(sa, "TxQ = %u, nb_tx_desc = %u, socket_id = %u",
 467                      tx_queue_id, nb_tx_desc, socket_id);
 468
 469         sfc_adapter_lock(sa);
 470
 471         rc = sfc_tx_qinit(sa, tx_queue_id, nb_tx_desc, socket_id, tx_conf);
 472         if (rc != 0)
 473                 goto fail_tx_qinit;
 474
 475         dev->data->tx_queues[tx_queue_id] = sas->txq_info[tx_queue_id].dp;
 476
 477         sfc_adapter_unlock(sa);
 478         return 0;
 479
 480 fail_tx_qinit:
 481         sfc_adapter_unlock(sa);
 482         SFC_ASSERT(rc > 0);
 483         return -rc;
 484 }
 485
 486 static void
 487 sfc_tx_queue_release(void *queue)
 488 {
 489         struct sfc_dp_txq *dp_txq = queue;
 490         struct sfc_txq *txq;
 491         unsigned int sw_index;
 492         struct sfc_adapter *sa;
 493
 494         if (dp_txq == NULL)
 495                 return;
 496
 497         txq = sfc_txq_by_dp_txq(dp_txq);
 498         sw_index = dp_txq->dpq.queue_id;
 499
 500         SFC_ASSERT(txq->evq != NULL);
 501         sa = txq->evq->sa;
 502
 503         sfc_log_init(sa, "TxQ = %u", sw_index);
 504
 505         sfc_adapter_lock(sa);
 506
 507         sfc_tx_qfini(sa, sw_index);
 508
 509         sfc_adapter_unlock(sa);
 510 }
 511
 512 /*
 513  * Some statistics are computed as A - B where A and B each increase
 514  * monotonically with some hardware counter(s) and the counters are read
 515  * asynchronously.
 516  *
 517  * If packet X is counted in A, but not counted in B yet, computed value is
 518  * greater than real.
 519  *
 520  * If packet X is not counted in A at the moment of reading the counter,
 521  * but counted in B at the moment of reading the counter, computed value
 522  * is less than real.
 523  *
 524  * However, counter which grows backward is worse evil than slightly wrong
 525  * value. So, let's try to guarantee that it never happens except may be
 526  * the case when the MAC stats are zeroed as a result of a NIC reset.
 527  */
 528 static void
 529 sfc_update_diff_stat(uint64_t *stat, uint64_t newval)
 530 {
 531         if ((int64_t)(newval - *stat) > 0 || newval == 0)
 532                 *stat = newval;
 533 }
 534
 535 static int
 536 sfc_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 537 {
 538         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 539         struct sfc_port *port = &sa->port;
 540         uint64_t *mac_stats;
 541         int ret;
 542
 543         rte_spinlock_lock(&port->mac_stats_lock);
 544
 545         ret = sfc_port_update_mac_stats(sa);
 546         if (ret != 0)
 547                 goto unlock;
 548
 549         mac_stats = port->mac_stats_buf;
 550
 551         if (EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask,
 552                                    EFX_MAC_VADAPTER_RX_UNICAST_PACKETS)) {
 553                 stats->ipackets =
 554                         mac_stats[EFX_MAC_VADAPTER_RX_UNICAST_PACKETS] +
 555                         mac_stats[EFX_MAC_VADAPTER_RX_MULTICAST_PACKETS] +
 556                         mac_stats[EFX_MAC_VADAPTER_RX_BROADCAST_PACKETS];
 557                 stats->opackets =
 558                         mac_stats[EFX_MAC_VADAPTER_TX_UNICAST_PACKETS] +
 559                         mac_stats[EFX_MAC_VADAPTER_TX_MULTICAST_PACKETS] +
 560                         mac_stats[EFX_MAC_VADAPTER_TX_BROADCAST_PACKETS];
 561                 stats->ibytes =
 562                         mac_stats[EFX_MAC_VADAPTER_RX_UNICAST_BYTES] +
 563                         mac_stats[EFX_MAC_VADAPTER_RX_MULTICAST_BYTES] +
 564                         mac_stats[EFX_MAC_VADAPTER_RX_BROADCAST_BYTES];
 565                 stats->obytes =
 566                         mac_stats[EFX_MAC_VADAPTER_TX_UNICAST_BYTES] +
 567                         mac_stats[EFX_MAC_VADAPTER_TX_MULTICAST_BYTES] +
 568                         mac_stats[EFX_MAC_VADAPTER_TX_BROADCAST_BYTES];
 569                 stats->imissed = mac_stats[EFX_MAC_VADAPTER_RX_BAD_PACKETS];
 570                 stats->oerrors = mac_stats[EFX_MAC_VADAPTER_TX_BAD_PACKETS];
 571         } else {
 572                 stats->opackets = mac_stats[EFX_MAC_TX_PKTS];
 573                 stats->ibytes = mac_stats[EFX_MAC_RX_OCTETS];
 574                 stats->obytes = mac_stats[EFX_MAC_TX_OCTETS];
 575                 /*
 576                  * Take into account stats which are whenever supported
 577                  * on EF10. If some stat is not supported by current
 578                  * firmware variant or HW revision, it is guaranteed
 579                  * to be zero in mac_stats.
 580                  */
 581                 stats->imissed =
 582                         mac_stats[EFX_MAC_RX_NODESC_DROP_CNT] +
 583                         mac_stats[EFX_MAC_PM_TRUNC_BB_OVERFLOW] +
 584                         mac_stats[EFX_MAC_PM_DISCARD_BB_OVERFLOW] +
 585                         mac_stats[EFX_MAC_PM_TRUNC_VFIFO_FULL] +
 586                         mac_stats[EFX_MAC_PM_DISCARD_VFIFO_FULL] +
 587                         mac_stats[EFX_MAC_PM_TRUNC_QBB] +
 588                         mac_stats[EFX_MAC_PM_DISCARD_QBB] +
 589                         mac_stats[EFX_MAC_PM_DISCARD_MAPPING] +
 590                         mac_stats[EFX_MAC_RXDP_Q_DISABLED_PKTS] +
 591                         mac_stats[EFX_MAC_RXDP_DI_DROPPED_PKTS];
 592                 stats->ierrors =
 593                         mac_stats[EFX_MAC_RX_FCS_ERRORS] +
 594                         mac_stats[EFX_MAC_RX_ALIGN_ERRORS] +
 595                         mac_stats[EFX_MAC_RX_JABBER_PKTS];
 596                 /* no oerrors counters supported on EF10 */
 597
 598                 /* Exclude missed, errors and pauses from Rx packets */
 599                 sfc_update_diff_stat(&port->ipackets,
 600                         mac_stats[EFX_MAC_RX_PKTS] -
 601                         mac_stats[EFX_MAC_RX_PAUSE_PKTS] -
 602                         stats->imissed - stats->ierrors);
 603                 stats->ipackets = port->ipackets;
 604         }
 605
 606 unlock:
 607         rte_spinlock_unlock(&port->mac_stats_lock);
 608         SFC_ASSERT(ret >= 0);
 609         return -ret;
 610 }
 611
 612 static void
 613 sfc_stats_reset(struct rte_eth_dev *dev)
 614 {
 615         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 616         struct sfc_port *port = &sa->port;
 617         int rc;
 618
 619         if (sa->state != SFC_ADAPTER_STARTED) {
 620                 /*
 621                  * The operation cannot be done if port is not started; it
 622                  * will be scheduled to be done during the next port start
 623                  */
 624                 port->mac_stats_reset_pending = B_TRUE;
 625                 return;
 626         }
 627
 628         rc = sfc_port_reset_mac_stats(sa);
 629         if (rc != 0)
 630                 sfc_err(sa, "failed to reset statistics (rc = %d)", rc);
 631 }
 632
 633 static int
 634 sfc_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
 635                unsigned int xstats_count)
 636 {
 637         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 638         struct sfc_port *port = &sa->port;
 639         uint64_t *mac_stats;
 640         int rc;
 641         unsigned int i;
 642         int nstats = 0;
 643
 644         rte_spinlock_lock(&port->mac_stats_lock);
 645
 646         rc = sfc_port_update_mac_stats(sa);
 647         if (rc != 0) {
 648                 SFC_ASSERT(rc > 0);
 649                 nstats = -rc;
 650                 goto unlock;
 651         }
 652
 653         mac_stats = port->mac_stats_buf;
 654
 655         for (i = 0; i < EFX_MAC_NSTATS; ++i) {
 656                 if (EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask, i)) {
 657                         if (xstats != NULL && nstats < (int)xstats_count) {
 658                                 xstats[nstats].id = nstats;
 659                                 xstats[nstats].value = mac_stats[i];
 660                         }
 661                         nstats++;
 662                 }
 663         }
 664
 665 unlock:
 666         rte_spinlock_unlock(&port->mac_stats_lock);
 667
 668         return nstats;
 669 }
 670
 671 static int
 672 sfc_xstats_get_names(struct rte_eth_dev *dev,
 673                      struct rte_eth_xstat_name *xstats_names,
 674                      unsigned int xstats_count)
 675 {
 676         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 677         struct sfc_port *port = &sa->port;
 678         unsigned int i;
 679         unsigned int nstats = 0;
 680
 681         for (i = 0; i < EFX_MAC_NSTATS; ++i) {
 682                 if (EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask, i)) {
 683                         if (xstats_names != NULL && nstats < xstats_count)
 684                                 strlcpy(xstats_names[nstats].name,
 685                                         efx_mac_stat_name(sa->nic, i),
 686                                         sizeof(xstats_names[0].name));
 687                         nstats++;
 688                 }
 689         }
 690
 691         return nstats;
 692 }
 693
 694 static int
 695 sfc_xstats_get_by_id(struct rte_eth_dev *dev, const uint64_t *ids,
 696                      uint64_t *values, unsigned int n)
 697 {
 698         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 699         struct sfc_port *port = &sa->port;
 700         uint64_t *mac_stats;
 701         unsigned int nb_supported = 0;
 702         unsigned int nb_written = 0;
 703         unsigned int i;
 704         int ret;
 705         int rc;
 706
 707         if (unlikely(values == NULL) ||
 708             unlikely((ids == NULL) && (n < port->mac_stats_nb_supported)))
 709                 return port->mac_stats_nb_supported;
 710
 711         rte_spinlock_lock(&port->mac_stats_lock);
 712
 713         rc = sfc_port_update_mac_stats(sa);
 714         if (rc != 0) {
 715                 SFC_ASSERT(rc > 0);
 716                 ret = -rc;
 717                 goto unlock;
 718         }
 719
 720         mac_stats = port->mac_stats_buf;
 721
 722         for (i = 0; (i < EFX_MAC_NSTATS) && (nb_written < n); ++i) {
 723                 if (!EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask, i))
 724                         continue;
 725
 726                 if ((ids == NULL) || (ids[nb_written] == nb_supported))
 727                         values[nb_written++] = mac_stats[i];
 728
 729                 ++nb_supported;
 730         }
 731
 732         ret = nb_written;
 733
 734 unlock:
 735         rte_spinlock_unlock(&port->mac_stats_lock);
 736
 737         return ret;
 738 }
 739
 740 static int
 741 sfc_xstats_get_names_by_id(struct rte_eth_dev *dev,
 742                            struct rte_eth_xstat_name *xstats_names,
 743                            const uint64_t *ids, unsigned int size)
 744 {
 745         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 746         struct sfc_port *port = &sa->port;
 747         unsigned int nb_supported = 0;
 748         unsigned int nb_written = 0;
 749         unsigned int i;
 750
 751         if (unlikely(xstats_names == NULL) ||
 752             unlikely((ids == NULL) && (size < port->mac_stats_nb_supported)))
 753                 return port->mac_stats_nb_supported;
 754
 755         for (i = 0; (i < EFX_MAC_NSTATS) && (nb_written < size); ++i) {
 756                 if (!EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask, i))
 757                         continue;
 758
 759                 if ((ids == NULL) || (ids[nb_written] == nb_supported)) {
 760                         char *name = xstats_names[nb_written++].name;
 761
 762                         strlcpy(name, efx_mac_stat_name(sa->nic, i),
 763                                 sizeof(xstats_names[0].name));
 764                 }
 765
 766                 ++nb_supported;
 767         }
 768
 769         return nb_written;
 770 }
 771
 772 static int
 773 sfc_flow_ctrl_get(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 774 {
 775         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 776         unsigned int wanted_fc, link_fc;
 777
 778         memset(fc_conf, 0, sizeof(*fc_conf));
 779
 780         sfc_adapter_lock(sa);
 781
 782         if (sa->state == SFC_ADAPTER_STARTED)
 783                 efx_mac_fcntl_get(sa->nic, &wanted_fc, &link_fc);
 784         else
 785                 link_fc = sa->port.flow_ctrl;
 786
 787         switch (link_fc) {
 788         case 0:
 789                 fc_conf->mode = RTE_FC_NONE;
 790                 break;
 791         case EFX_FCNTL_RESPOND:
 792                 fc_conf->mode = RTE_FC_RX_PAUSE;
 793                 break;
 794         case EFX_FCNTL_GENERATE:
 795                 fc_conf->mode = RTE_FC_TX_PAUSE;
 796                 break;
 797         case (EFX_FCNTL_RESPOND | EFX_FCNTL_GENERATE):
 798                 fc_conf->mode = RTE_FC_FULL;
 799                 break;
 800         default:
 801                 sfc_err(sa, "%s: unexpected flow control value %#x",
 802                         __func__, link_fc);
 803         }
 804
 805         fc_conf->autoneg = sa->port.flow_ctrl_autoneg;
 806
 807         sfc_adapter_unlock(sa);
 808
 809         return 0;
 810 }
 811
 812 static int
 813 sfc_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 814 {
 815         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 816         struct sfc_port *port = &sa->port;
 817         unsigned int fcntl;
 818         int rc;
 819
 820         if (fc_conf->high_water != 0 || fc_conf->low_water != 0 ||
 821             fc_conf->pause_time != 0 || fc_conf->send_xon != 0 ||
 822             fc_conf->mac_ctrl_frame_fwd != 0) {
 823                 sfc_err(sa, "unsupported flow control settings specified");
 824                 rc = EINVAL;
 825                 goto fail_inval;
 826         }
 827
 828         switch (fc_conf->mode) {
 829         case RTE_FC_NONE:
 830                 fcntl = 0;
 831                 break;
 832         case RTE_FC_RX_PAUSE:
 833                 fcntl = EFX_FCNTL_RESPOND;
 834                 break;
 835         case RTE_FC_TX_PAUSE:
 836                 fcntl = EFX_FCNTL_GENERATE;
 837                 break;
 838         case RTE_FC_FULL:
 839                 fcntl = EFX_FCNTL_RESPOND | EFX_FCNTL_GENERATE;
 840                 break;
 841         default:
 842                 rc = EINVAL;
 843                 goto fail_inval;
 844         }
 845
 846         sfc_adapter_lock(sa);
 847
 848         if (sa->state == SFC_ADAPTER_STARTED) {
 849                 rc = efx_mac_fcntl_set(sa->nic, fcntl, fc_conf->autoneg);
 850                 if (rc != 0)
 851                         goto fail_mac_fcntl_set;
 852         }
 853
 854         port->flow_ctrl = fcntl;
 855         port->flow_ctrl_autoneg = fc_conf->autoneg;
 856
 857         sfc_adapter_unlock(sa);
 858
 859         return 0;
 860
 861 fail_mac_fcntl_set:
 862         sfc_adapter_unlock(sa);
 863 fail_inval:
 864         SFC_ASSERT(rc > 0);
 865         return -rc;
 866 }
 867
 868 static int
 869 sfc_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 870 {
 871         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 872         size_t pdu = EFX_MAC_PDU(mtu);
 873         size_t old_pdu;
 874         int rc;
 875
 876         sfc_log_init(sa, "mtu=%u", mtu);
 877
 878         rc = EINVAL;
 879         if (pdu < EFX_MAC_PDU_MIN) {
 880                 sfc_err(sa, "too small MTU %u (PDU size %u less than min %u)",
 881                         (unsigned int)mtu, (unsigned int)pdu,
 882                         EFX_MAC_PDU_MIN);
 883                 goto fail_inval;
 884         }
 885         if (pdu > EFX_MAC_PDU_MAX) {
 886                 sfc_err(sa, "too big MTU %u (PDU size %u greater than max %u)",
 887                         (unsigned int)mtu, (unsigned int)pdu,
 888                         EFX_MAC_PDU_MAX);
 889                 goto fail_inval;
 890         }
 891
 892         sfc_adapter_lock(sa);
 893
 894         if (pdu != sa->port.pdu) {
 895                 if (sa->state == SFC_ADAPTER_STARTED) {
 896                         sfc_stop(sa);
 897
 898                         old_pdu = sa->port.pdu;
 899                         sa->port.pdu = pdu;
 900                         rc = sfc_start(sa);
 901                         if (rc != 0)
 902                                 goto fail_start;
 903                 } else {
 904                         sa->port.pdu = pdu;
 905                 }
 906         }
 907
 908         /*
 909          * The driver does not use it, but other PMDs update jumbo frame
 910          * flag and max_rx_pkt_len when MTU is set.
 911          */
 912         if (mtu > ETHER_MAX_LEN) {
 913                 struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode;
 914                 rxmode->offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
 915         }
 916
 917         dev->data->dev_conf.rxmode.max_rx_pkt_len = sa->port.pdu;
 918
 919         sfc_adapter_unlock(sa);
 920
 921         sfc_log_init(sa, "done");
 922         return 0;
 923
 924 fail_start:
 925         sa->port.pdu = old_pdu;
 926         if (sfc_start(sa) != 0)
 927                 sfc_err(sa, "cannot start with neither new (%u) nor old (%u) "
 928                         "PDU max size - port is stopped",
 929                         (unsigned int)pdu, (unsigned int)old_pdu);
 930         sfc_adapter_unlock(sa);
 931
 932 fail_inval:
 933         sfc_log_init(sa, "failed %d", rc);
 934         SFC_ASSERT(rc > 0);
 935         return -rc;
 936 }
 937 static int
 938 sfc_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
 939 {
 940         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
 941         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
 942         struct sfc_port *port = &sa->port;
 943         struct ether_addr *old_addr = &dev->data->mac_addrs[0];
 944         int rc = 0;
 945
 946         sfc_adapter_lock(sa);
 947
 948         /*
 949          * Copy the address to the device private data so that
 950          * it could be recalled in the case of adapter restart.
 951          */
 952         ether_addr_copy(mac_addr, &port->default_mac_addr);
 953
 954         /*
 955          * Neither of the two following checks can return
 956          * an error. The new MAC address is preserved in
 957          * the device private data and can be activated
 958          * on the next port start if the user prevents
 959          * isolated mode from being enabled.
 960          */
 961         if (sfc_sa2shared(sa)->isolated) {
 962                 sfc_warn(sa, "isolated mode is active on the port");
 963                 sfc_warn(sa, "will not set MAC address");
 964                 goto unlock;
 965         }
 966
 967         if (sa->state != SFC_ADAPTER_STARTED) {
 968                 sfc_notice(sa, "the port is not started");
 969                 sfc_notice(sa, "the new MAC address will be set on port start");
 970
 971                 goto unlock;
 972         }
 973
 974         if (encp->enc_allow_set_mac_with_installed_filters) {
 975                 rc = efx_mac_addr_set(sa->nic, mac_addr->addr_bytes);
 976                 if (rc != 0) {
 977                         sfc_err(sa, "cannot set MAC address (rc = %u)", rc);
 978                         goto unlock;
 979                 }
 980
 981                 /*
 982                  * Changing the MAC address by means of MCDI request
 983                  * has no effect on received traffic, therefore
 984                  * we also need to update unicast filters
 985                  */
 986                 rc = sfc_set_rx_mode(sa);
 987                 if (rc != 0) {
 988                         sfc_err(sa, "cannot set filter (rc = %u)", rc);
 989                         /* Rollback the old address */
 990                         (void)efx_mac_addr_set(sa->nic, old_addr->addr_bytes);
 991                         (void)sfc_set_rx_mode(sa);
 992                 }
 993         } else {
 994                 sfc_warn(sa, "cannot set MAC address with filters installed");
 995                 sfc_warn(sa, "adapter will be restarted to pick the new MAC");
 996                 sfc_warn(sa, "(some traffic may be dropped)");
 997
 998                 /*
 999                  * Since setting MAC address with filters installed is not
1000                  * allowed on the adapter, the new MAC address will be set
1001                  * by means of adapter restart. sfc_start() shall retrieve
1002                  * the new address from the device private data and set it.
1003                  */
1004                 sfc_stop(sa);
1005                 rc = sfc_start(sa);
1006                 if (rc != 0)
1007                         sfc_err(sa, "cannot restart adapter (rc = %u)", rc);
1008         }
1009
1010 unlock:
1011         if (rc != 0)
1012                 ether_addr_copy(old_addr, &port->default_mac_addr);
1013
1014         sfc_adapter_unlock(sa);
1015
1016         SFC_ASSERT(rc >= 0);
1017         return -rc;
1018 }
1019
1020
1021 static int
1022 sfc_set_mc_addr_list(struct rte_eth_dev *dev, struct ether_addr *mc_addr_set,
1023                      uint32_t nb_mc_addr)
1024 {
1025         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
1026         struct sfc_port *port = &sa->port;
1027         uint8_t *mc_addrs = port->mcast_addrs;
1028         int rc;
1029         unsigned int i;
1030
1031         if (sfc_sa2shared(sa)->isolated) {
1032                 sfc_err(sa, "isolated mode is active on the port");
1033                 sfc_err(sa, "will not set multicast address list");
1034                 return -ENOTSUP;
1035         }
1036
1037         if (mc_addrs == NULL)
1038                 return -ENOBUFS;
1039
1040         if (nb_mc_addr > port->max_mcast_addrs) {
1041                 sfc_err(sa, "too many multicast addresses: %u > %u",
1042                          nb_mc_addr, port->max_mcast_addrs);
1043                 return -EINVAL;
1044         }
1045
1046         for (i = 0; i < nb_mc_addr; ++i) {
1047                 rte_memcpy(mc_addrs, mc_addr_set[i].addr_bytes,
1048                                  EFX_MAC_ADDR_LEN);
1049                 mc_addrs += EFX_MAC_ADDR_LEN;
1050         }
1051
1052         port->nb_mcast_addrs = nb_mc_addr;
1053
1054         if (sa->state != SFC_ADAPTER_STARTED)
1055                 return 0;
1056
1057         rc = efx_mac_multicast_list_set(sa->nic, port->mcast_addrs,
1058                                         port->nb_mcast_addrs);
1059         if (rc != 0)
1060                 sfc_err(sa, "cannot set multicast address list (rc = %u)", rc);
1061
1062         SFC_ASSERT(rc >= 0);
1063         return -rc;
1064 }
1065
1066 /*
1067  * The function is used by the secondary process as well. It must not
1068  * use any process-local pointers from the adapter data.
1069  */
1070 static void
1071 sfc_rx_queue_info_get(struct rte_eth_dev *dev, uint16_t rx_queue_id,
1072                       struct rte_eth_rxq_info *qinfo)
1073 {
1074         struct sfc_adapter_shared *sas = sfc_adapter_shared_by_eth_dev(dev);
1075         struct sfc_rxq_info *rxq_info;
1076
1077         SFC_ASSERT(rx_queue_id < sas->rxq_count);
1078
1079         rxq_info = &sas->rxq_info[rx_queue_id];
1080
1081         qinfo->mp = rxq_info->refill_mb_pool;
1082         qinfo->conf.rx_free_thresh = rxq_info->refill_threshold;
1083         qinfo->conf.rx_drop_en = 1;
1084         qinfo->conf.rx_deferred_start = rxq_info->deferred_start;
1085         qinfo->conf.offloads = dev->data->dev_conf.rxmode.offloads;
1086         if (rxq_info->type_flags & EFX_RXQ_FLAG_SCATTER) {
1087                 qinfo->conf.offloads |= DEV_RX_OFFLOAD_SCATTER;
1088                 qinfo->scattered_rx = 1;
1089         }
1090         qinfo->nb_desc = rxq_info->entries;
1091 }
1092
1093 /*
1094  * The function is used by the secondary process as well. It must not
1095  * use any process-local pointers from the adapter data.
1096  */
1097 static void
1098 sfc_tx_queue_info_get(struct rte_eth_dev *dev, uint16_t tx_queue_id,
1099                       struct rte_eth_txq_info *qinfo)
1100 {
1101         struct sfc_adapter_shared *sas = sfc_adapter_shared_by_eth_dev(dev);
1102         struct sfc_txq_info *txq_info;
1103
1104         SFC_ASSERT(tx_queue_id < sas->txq_count);
1105
1106         txq_info = &sas->txq_info[tx_queue_id];
1107
1108         memset(qinfo, 0, sizeof(*qinfo));
1109
1110         qinfo->conf.offloads = txq_info->offloads;
1111         qinfo->conf.tx_free_thresh = txq_info->free_thresh;
1112         qinfo->conf.tx_deferred_start = txq_info->deferred_start;
1113         qinfo->nb_desc = txq_info->entries;
1114 }
1115
1116 /*
1117  * The function is used by the secondary process as well. It must not
1118  * use any process-local pointers from the adapter data.
1119  */
1120 static uint32_t
1121 sfc_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
1122 {
1123         const struct sfc_adapter_priv *sap = sfc_adapter_priv_by_eth_dev(dev);
1124         struct sfc_adapter_shared *sas = sfc_adapter_shared_by_eth_dev(dev);
1125         struct sfc_rxq_info *rxq_info;
1126
1127         SFC_ASSERT(rx_queue_id < sas->rxq_count);
1128         rxq_info = &sas->rxq_info[rx_queue_id];
1129
1130         if ((rxq_info->state & SFC_RXQ_STARTED) == 0)
1131                 return 0;
1132
1133         return sap->dp_rx->qdesc_npending(rxq_info->dp);
1134 }
1135
1136 /*
1137  * The function is used by the secondary process as well. It must not
1138  * use any process-local pointers from the adapter data.
1139  */
1140 static int
1141 sfc_rx_descriptor_done(void *queue, uint16_t offset)
1142 {
1143         struct sfc_dp_rxq *dp_rxq = queue;
1144         const struct sfc_dp_rx *dp_rx;
1145
1146         dp_rx = sfc_dp_rx_by_dp_rxq(dp_rxq);
1147
1148         return offset < dp_rx->qdesc_npending(dp_rxq);
1149 }
1150
1151 /*
1152  * The function is used by the secondary process as well. It must not
1153  * use any process-local pointers from the adapter data.
1154  */
1155 static int
1156 sfc_rx_descriptor_status(void *queue, uint16_t offset)
1157 {
1158         struct sfc_dp_rxq *dp_rxq = queue;
1159         const struct sfc_dp_rx *dp_rx;
1160
1161         dp_rx = sfc_dp_rx_by_dp_rxq(dp_rxq);
1162
1163         return dp_rx->qdesc_status(dp_rxq, offset);
1164 }
1165
1166 /*
1167  * The function is used by the secondary process as well. It must not
1168  * use any process-local pointers from the adapter data.
1169  */
1170 static int
1171 sfc_tx_descriptor_status(void *queue, uint16_t offset)
1172 {
1173         struct sfc_dp_txq *dp_txq = queue;
1174         const struct sfc_dp_tx *dp_tx;
1175
1176         dp_tx = sfc_dp_tx_by_dp_txq(dp_txq);
1177
1178         return dp_tx->qdesc_status(dp_txq, offset);
1179 }
1180
1181 static int
1182 sfc_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
1183 {
1184         struct sfc_adapter_shared *sas = sfc_adapter_shared_by_eth_dev(dev);
1185         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
1186         int rc;
1187
1188         sfc_log_init(sa, "RxQ=%u", rx_queue_id);
1189
1190         sfc_adapter_lock(sa);
1191
1192         rc = EINVAL;
1193         if (sa->state != SFC_ADAPTER_STARTED)
1194                 goto fail_not_started;
1195
1196         if (sas->rxq_info[rx_queue_id].state != SFC_RXQ_INITIALIZED)
1197                 goto fail_not_setup;
1198
1199         rc = sfc_rx_qstart(sa, rx_queue_id);
1200         if (rc != 0)
1201                 goto fail_rx_qstart;
1202
1203         sas->rxq_info[rx_queue_id].deferred_started = B_TRUE;
1204
1205         sfc_adapter_unlock(sa);
1206
1207         return 0;
1208
1209 fail_rx_qstart:
1210 fail_not_setup:
1211 fail_not_started:
1212         sfc_adapter_unlock(sa);
1213         SFC_ASSERT(rc > 0);
1214         return -rc;
1215 }
1216
1217 static int
1218 sfc_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
1219 {
1220         struct sfc_adapter_shared *sas = sfc_adapter_shared_by_eth_dev(dev);
1221         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
1222
1223         sfc_log_init(sa, "RxQ=%u", rx_queue_id);
1224
1225         sfc_adapter_lock(sa);
1226         sfc_rx_qstop(sa, rx_queue_id);
1227
1228         sas->rxq_info[rx_queue_id].deferred_started = B_FALSE;
1229
1230         sfc_adapter_unlock(sa);
1231
1232         return 0;
1233 }
1234
1235 static int
1236 sfc_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
1237 {
1238         struct sfc_adapter_shared *sas = sfc_adapter_shared_by_eth_dev(dev);
1239         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
1240         int rc;
1241
1242         sfc_log_init(sa, "TxQ = %u", tx_queue_id);
1243
1244         sfc_adapter_lock(sa);
1245
1246         rc = EINVAL;
1247         if (sa->state != SFC_ADAPTER_STARTED)
1248                 goto fail_not_started;
1249
1250         if (sas->txq_info[tx_queue_id].state != SFC_TXQ_INITIALIZED)
1251                 goto fail_not_setup;
1252
1253         rc = sfc_tx_qstart(sa, tx_queue_id);
1254         if (rc != 0)
1255                 goto fail_tx_qstart;
1256
1257         sas->txq_info[tx_queue_id].deferred_started = B_TRUE;
1258
1259         sfc_adapter_unlock(sa);
1260         return 0;
1261
1262 fail_tx_qstart:
1263
1264 fail_not_setup:
1265 fail_not_started:
1266         sfc_adapter_unlock(sa);
1267         SFC_ASSERT(rc > 0);
1268         return -rc;
1269 }
1270
1271 static int
1272 sfc_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
1273 {
1274         struct sfc_adapter_shared *sas = sfc_adapter_shared_by_eth_dev(dev);
1275         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
1276
1277         sfc_log_init(sa, "TxQ = %u", tx_queue_id);
1278
1279         sfc_adapter_lock(sa);
1280
1281         sfc_tx_qstop(sa, tx_queue_id);
1282
1283         sas->txq_info[tx_queue_id].deferred_started = B_FALSE;
1284
1285         sfc_adapter_unlock(sa);
1286         return 0;
1287 }
1288
1289 static efx_tunnel_protocol_t
1290 sfc_tunnel_rte_type_to_efx_udp_proto(enum rte_eth_tunnel_type rte_type)
1291 {
1292         switch (rte_type) {
1293         case RTE_TUNNEL_TYPE_VXLAN:
1294                 return EFX_TUNNEL_PROTOCOL_VXLAN;
1295         case RTE_TUNNEL_TYPE_GENEVE:
1296                 return EFX_TUNNEL_PROTOCOL_GENEVE;
1297         default:
1298                 return EFX_TUNNEL_NPROTOS;
1299         }
1300 }
1301
1302 enum sfc_udp_tunnel_op_e {
1303         SFC_UDP_TUNNEL_ADD_PORT,
1304         SFC_UDP_TUNNEL_DEL_PORT,
1305 };
1306
1307 static int
1308 sfc_dev_udp_tunnel_op(struct rte_eth_dev *dev,
1309                       struct rte_eth_udp_tunnel *tunnel_udp,
1310                       enum sfc_udp_tunnel_op_e op)
1311 {
1312         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
1313         efx_tunnel_protocol_t tunnel_proto;
1314         int rc;
1315
1316         sfc_log_init(sa, "%s udp_port=%u prot_type=%u",
1317                      (op == SFC_UDP_TUNNEL_ADD_PORT) ? "add" :
1318                      (op == SFC_UDP_TUNNEL_DEL_PORT) ? "delete" : "unknown",
1319                      tunnel_udp->udp_port, tunnel_udp->prot_type);
1320
1321         tunnel_proto =
1322                 sfc_tunnel_rte_type_to_efx_udp_proto(tunnel_udp->prot_type);
1323         if (tunnel_proto >= EFX_TUNNEL_NPROTOS) {
1324                 rc = ENOTSUP;
1325                 goto fail_bad_proto;
1326         }
1327
1328         sfc_adapter_lock(sa);
1329
1330         switch (op) {
1331         case SFC_UDP_TUNNEL_ADD_PORT:
1332                 rc = efx_tunnel_config_udp_add(sa->nic,
1333                                                tunnel_udp->udp_port,
1334                                                tunnel_proto);
1335                 break;
1336         case SFC_UDP_TUNNEL_DEL_PORT:
1337                 rc = efx_tunnel_config_udp_remove(sa->nic,
1338                                                   tunnel_udp->udp_port,
1339                                                   tunnel_proto);
1340                 break;
1341         default:
1342                 rc = EINVAL;
1343                 goto fail_bad_op;
1344         }
1345
1346         if (rc != 0)
1347                 goto fail_op;
1348
1349         if (sa->state == SFC_ADAPTER_STARTED) {
1350                 rc = efx_tunnel_reconfigure(sa->nic);
1351                 if (rc == EAGAIN) {
1352                         /*
1353                          * Configuration is accepted by FW and MC reboot
1354                          * is initiated to apply the changes. MC reboot
1355                          * will be handled in a usual way (MC reboot
1356                          * event on management event queue and adapter
1357                          * restart).
1358                          */
1359                         rc = 0;
1360                 } else if (rc != 0) {
1361                         goto fail_reconfigure;
1362                 }
1363         }
1364
1365         sfc_adapter_unlock(sa);
1366         return 0;
1367
1368 fail_reconfigure:
1369         /* Remove/restore entry since the change makes the trouble */
1370         switch (op) {
1371         case SFC_UDP_TUNNEL_ADD_PORT:
1372                 (void)efx_tunnel_config_udp_remove(sa->nic,
1373                                                    tunnel_udp->udp_port,
1374                                                    tunnel_proto);
1375                 break;
1376         case SFC_UDP_TUNNEL_DEL_PORT:
1377                 (void)efx_tunnel_config_udp_add(sa->nic,
1378                                                 tunnel_udp->udp_port,
1379                                                 tunnel_proto);
1380                 break;
1381         }
1382
1383 fail_op:
1384 fail_bad_op:
1385         sfc_adapter_unlock(sa);
1386
1387 fail_bad_proto:
1388         SFC_ASSERT(rc > 0);
1389         return -rc;
1390 }
1391
1392 static int
1393 sfc_dev_udp_tunnel_port_add(struct rte_eth_dev *dev,
1394                             struct rte_eth_udp_tunnel *tunnel_udp)
1395 {
1396         return sfc_dev_udp_tunnel_op(dev, tunnel_udp, SFC_UDP_TUNNEL_ADD_PORT);
1397 }
1398
1399 static int
1400 sfc_dev_udp_tunnel_port_del(struct rte_eth_dev *dev,
1401                             struct rte_eth_udp_tunnel *tunnel_udp)
1402 {
1403         return sfc_dev_udp_tunnel_op(dev, tunnel_udp, SFC_UDP_TUNNEL_DEL_PORT);
1404 }
1405
1406 /*
1407  * The function is used by the secondary process as well. It must not
1408  * use any process-local pointers from the adapter data.
1409  */
1410 static int
1411 sfc_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
1412                           struct rte_eth_rss_conf *rss_conf)
1413 {
1414         struct sfc_adapter_shared *sas = sfc_adapter_shared_by_eth_dev(dev);
1415         struct sfc_rss *rss = &sas->rss;
1416
1417         if (rss->context_type != EFX_RX_SCALE_EXCLUSIVE)
1418                 return -ENOTSUP;
1419
1420         /*
1421          * Mapping of hash configuration between RTE and EFX is not one-to-one,
1422          * hence, conversion is done here to derive a correct set of ETH_RSS
1423          * flags which corresponds to the active EFX configuration stored
1424          * locally in 'sfc_adapter' and kept up-to-date
1425          */
1426         rss_conf->rss_hf = sfc_rx_hf_efx_to_rte(rss, rss->hash_types);
1427         rss_conf->rss_key_len = EFX_RSS_KEY_SIZE;
1428         if (rss_conf->rss_key != NULL)
1429                 rte_memcpy(rss_conf->rss_key, rss->key, EFX_RSS_KEY_SIZE);
1430
1431         return 0;
1432 }
1433
1434 static int
1435 sfc_dev_rss_hash_update(struct rte_eth_dev *dev,
1436                         struct rte_eth_rss_conf *rss_conf)
1437 {
1438         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
1439         struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1440         unsigned int efx_hash_types;
1441         int rc = 0;
1442
1443         if (sfc_sa2shared(sa)->isolated)
1444                 return -ENOTSUP;
1445
1446         if (rss->context_type != EFX_RX_SCALE_EXCLUSIVE) {
1447                 sfc_err(sa, "RSS is not available");
1448                 return -ENOTSUP;
1449         }
1450
1451         if (rss->channels == 0) {
1452                 sfc_err(sa, "RSS is not configured");
1453                 return -EINVAL;
1454         }
1455
1456         if ((rss_conf->rss_key != NULL) &&
1457             (rss_conf->rss_key_len != sizeof(rss->key))) {
1458                 sfc_err(sa, "RSS key size is wrong (should be %lu)",
1459                         sizeof(rss->key));
1460                 return -EINVAL;
1461         }
1462
1463         sfc_adapter_lock(sa);
1464
1465         rc = sfc_rx_hf_rte_to_efx(sa, rss_conf->rss_hf, &efx_hash_types);
1466         if (rc != 0)
1467                 goto fail_rx_hf_rte_to_efx;
1468
1469         rc = efx_rx_scale_mode_set(sa->nic, EFX_RSS_CONTEXT_DEFAULT,
1470                                    rss->hash_alg, efx_hash_types, B_TRUE);
1471         if (rc != 0)
1472                 goto fail_scale_mode_set;
1473
1474         if (rss_conf->rss_key != NULL) {
1475                 if (sa->state == SFC_ADAPTER_STARTED) {
1476                         rc = efx_rx_scale_key_set(sa->nic,
1477                                                   EFX_RSS_CONTEXT_DEFAULT,
1478                                                   rss_conf->rss_key,
1479                                                   sizeof(rss->key));
1480                         if (rc != 0)
1481                                 goto fail_scale_key_set;
1482                 }
1483
1484                 rte_memcpy(rss->key, rss_conf->rss_key, sizeof(rss->key));
1485         }
1486
1487         rss->hash_types = efx_hash_types;
1488
1489         sfc_adapter_unlock(sa);
1490
1491         return 0;
1492
1493 fail_scale_key_set:
1494         if (efx_rx_scale_mode_set(sa->nic, EFX_RSS_CONTEXT_DEFAULT,
1495                                   EFX_RX_HASHALG_TOEPLITZ,
1496                                   rss->hash_types, B_TRUE) != 0)
1497                 sfc_err(sa, "failed to restore RSS mode");
1498
1499 fail_scale_mode_set:
1500 fail_rx_hf_rte_to_efx:
1501         sfc_adapter_unlock(sa);
1502         return -rc;
1503 }
1504
1505 /*
1506  * The function is used by the secondary process as well. It must not
1507  * use any process-local pointers from the adapter data.
1508  */
1509 static int
1510 sfc_dev_rss_reta_query(struct rte_eth_dev *dev,
1511                        struct rte_eth_rss_reta_entry64 *reta_conf,
1512                        uint16_t reta_size)
1513 {
1514         struct sfc_adapter_shared *sas = sfc_adapter_shared_by_eth_dev(dev);
1515         struct sfc_rss *rss = &sas->rss;
1516         int entry;
1517
1518         if (rss->context_type != EFX_RX_SCALE_EXCLUSIVE || sas->isolated)
1519                 return -ENOTSUP;
1520
1521         if (rss->channels == 0)
1522                 return -EINVAL;
1523
1524         if (reta_size != EFX_RSS_TBL_SIZE)
1525                 return -EINVAL;
1526
1527         for (entry = 0; entry < reta_size; entry++) {
1528                 int grp = entry / RTE_RETA_GROUP_SIZE;
1529                 int grp_idx = entry % RTE_RETA_GROUP_SIZE;
1530
1531                 if ((reta_conf[grp].mask >> grp_idx) & 1)
1532                         reta_conf[grp].reta[grp_idx] = rss->tbl[entry];
1533         }
1534
1535         return 0;
1536 }
1537
1538 static int
1539 sfc_dev_rss_reta_update(struct rte_eth_dev *dev,
1540                         struct rte_eth_rss_reta_entry64 *reta_conf,
1541                         uint16_t reta_size)
1542 {
1543         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
1544         struct sfc_rss *rss = &sfc_sa2shared(sa)->rss;
1545         unsigned int *rss_tbl_new;
1546         uint16_t entry;
1547         int rc = 0;
1548
1549
1550         if (sfc_sa2shared(sa)->isolated)
1551                 return -ENOTSUP;
1552
1553         if (rss->context_type != EFX_RX_SCALE_EXCLUSIVE) {
1554                 sfc_err(sa, "RSS is not available");
1555                 return -ENOTSUP;
1556         }
1557
1558         if (rss->channels == 0) {
1559                 sfc_err(sa, "RSS is not configured");
1560                 return -EINVAL;
1561         }
1562
1563         if (reta_size != EFX_RSS_TBL_SIZE) {
1564                 sfc_err(sa, "RETA size is wrong (should be %u)",
1565                         EFX_RSS_TBL_SIZE);
1566                 return -EINVAL;
1567         }
1568
1569         rss_tbl_new = rte_zmalloc("rss_tbl_new", sizeof(rss->tbl), 0);
1570         if (rss_tbl_new == NULL)
1571                 return -ENOMEM;
1572
1573         sfc_adapter_lock(sa);
1574
1575         rte_memcpy(rss_tbl_new, rss->tbl, sizeof(rss->tbl));
1576
1577         for (entry = 0; entry < reta_size; entry++) {
1578                 int grp_idx = entry % RTE_RETA_GROUP_SIZE;
1579                 struct rte_eth_rss_reta_entry64 *grp;
1580
1581                 grp = &reta_conf[entry / RTE_RETA_GROUP_SIZE];
1582
1583                 if (grp->mask & (1ull << grp_idx)) {
1584                         if (grp->reta[grp_idx] >= rss->channels) {
1585                                 rc = EINVAL;
1586                                 goto bad_reta_entry;
1587                         }
1588                         rss_tbl_new[entry] = grp->reta[grp_idx];
1589                 }
1590         }
1591
1592         if (sa->state == SFC_ADAPTER_STARTED) {
1593                 rc = efx_rx_scale_tbl_set(sa->nic, EFX_RSS_CONTEXT_DEFAULT,
1594                                           rss_tbl_new, EFX_RSS_TBL_SIZE);
1595                 if (rc != 0)
1596                         goto fail_scale_tbl_set;
1597         }
1598
1599         rte_memcpy(rss->tbl, rss_tbl_new, sizeof(rss->tbl));
1600
1601 fail_scale_tbl_set:
1602 bad_reta_entry:
1603         sfc_adapter_unlock(sa);
1604
1605         rte_free(rss_tbl_new);
1606
1607         SFC_ASSERT(rc >= 0);
1608         return -rc;
1609 }
1610
1611 static int
1612 sfc_dev_filter_ctrl(struct rte_eth_dev *dev, enum rte_filter_type filter_type,
1613                     enum rte_filter_op filter_op,
1614                     void *arg)
1615 {
1616         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
1617         int rc = ENOTSUP;
1618
1619         sfc_log_init(sa, "entry");
1620
1621         switch (filter_type) {
1622         case RTE_ETH_FILTER_NONE:
1623                 sfc_err(sa, "Global filters configuration not supported");
1624                 break;
1625         case RTE_ETH_FILTER_MACVLAN:
1626                 sfc_err(sa, "MACVLAN filters not supported");
1627                 break;
1628         case RTE_ETH_FILTER_ETHERTYPE:
1629                 sfc_err(sa, "EtherType filters not supported");
1630                 break;
1631         case RTE_ETH_FILTER_FLEXIBLE:
1632                 sfc_err(sa, "Flexible filters not supported");
1633                 break;
1634         case RTE_ETH_FILTER_SYN:
1635                 sfc_err(sa, "SYN filters not supported");
1636                 break;
1637         case RTE_ETH_FILTER_NTUPLE:
1638                 sfc_err(sa, "NTUPLE filters not supported");
1639                 break;
1640         case RTE_ETH_FILTER_TUNNEL:
1641                 sfc_err(sa, "Tunnel filters not supported");
1642                 break;
1643         case RTE_ETH_FILTER_FDIR:
1644                 sfc_err(sa, "Flow Director filters not supported");
1645                 break;
1646         case RTE_ETH_FILTER_HASH:
1647                 sfc_err(sa, "Hash filters not supported");
1648                 break;
1649         case RTE_ETH_FILTER_GENERIC:
1650                 if (filter_op != RTE_ETH_FILTER_GET) {
1651                         rc = EINVAL;
1652                 } else {
1653                         *(const void **)arg = &sfc_flow_ops;
1654                         rc = 0;
1655                 }
1656                 break;
1657         default:
1658                 sfc_err(sa, "Unknown filter type %u", filter_type);
1659                 break;
1660         }
1661
1662         sfc_log_init(sa, "exit: %d", -rc);
1663         SFC_ASSERT(rc >= 0);
1664         return -rc;
1665 }
1666
1667 static int
1668 sfc_pool_ops_supported(struct rte_eth_dev *dev, const char *pool)
1669 {
1670         const struct sfc_adapter_priv *sap = sfc_adapter_priv_by_eth_dev(dev);
1671
1672         /*
1673          * If Rx datapath does not provide callback to check mempool,
1674          * all pools are supported.
1675          */
1676         if (sap->dp_rx->pool_ops_supported == NULL)
1677                 return 1;
1678
1679         return sap->dp_rx->pool_ops_supported(pool);
1680 }
1681
1682 static const struct eth_dev_ops sfc_eth_dev_ops = {
1683         .dev_configure                  = sfc_dev_configure,
1684         .dev_start                      = sfc_dev_start,
1685         .dev_stop                       = sfc_dev_stop,
1686         .dev_set_link_up                = sfc_dev_set_link_up,
1687         .dev_set_link_down              = sfc_dev_set_link_down,
1688         .dev_close                      = sfc_dev_close,
1689         .promiscuous_enable             = sfc_dev_promisc_enable,
1690         .promiscuous_disable            = sfc_dev_promisc_disable,
1691         .allmulticast_enable            = sfc_dev_allmulti_enable,
1692         .allmulticast_disable           = sfc_dev_allmulti_disable,
1693         .link_update                    = sfc_dev_link_update,
1694         .stats_get                      = sfc_stats_get,
1695         .stats_reset                    = sfc_stats_reset,
1696         .xstats_get                     = sfc_xstats_get,
1697         .xstats_reset                   = sfc_stats_reset,
1698         .xstats_get_names               = sfc_xstats_get_names,
1699         .dev_infos_get                  = sfc_dev_infos_get,
1700         .dev_supported_ptypes_get       = sfc_dev_supported_ptypes_get,
1701         .mtu_set                        = sfc_dev_set_mtu,
1702         .rx_queue_start                 = sfc_rx_queue_start,
1703         .rx_queue_stop                  = sfc_rx_queue_stop,
1704         .tx_queue_start                 = sfc_tx_queue_start,
1705         .tx_queue_stop                  = sfc_tx_queue_stop,
1706         .rx_queue_setup                 = sfc_rx_queue_setup,
1707         .rx_queue_release               = sfc_rx_queue_release,
1708         .rx_queue_count                 = sfc_rx_queue_count,
1709         .rx_descriptor_done             = sfc_rx_descriptor_done,
1710         .rx_descriptor_status           = sfc_rx_descriptor_status,
1711         .tx_descriptor_status           = sfc_tx_descriptor_status,
1712         .tx_queue_setup                 = sfc_tx_queue_setup,
1713         .tx_queue_release               = sfc_tx_queue_release,
1714         .flow_ctrl_get                  = sfc_flow_ctrl_get,
1715         .flow_ctrl_set                  = sfc_flow_ctrl_set,
1716         .mac_addr_set                   = sfc_mac_addr_set,
1717         .udp_tunnel_port_add            = sfc_dev_udp_tunnel_port_add,
1718         .udp_tunnel_port_del            = sfc_dev_udp_tunnel_port_del,
1719         .reta_update                    = sfc_dev_rss_reta_update,
1720         .reta_query                     = sfc_dev_rss_reta_query,
1721         .rss_hash_update                = sfc_dev_rss_hash_update,
1722         .rss_hash_conf_get              = sfc_dev_rss_hash_conf_get,
1723         .filter_ctrl                    = sfc_dev_filter_ctrl,
1724         .set_mc_addr_list               = sfc_set_mc_addr_list,
1725         .rxq_info_get                   = sfc_rx_queue_info_get,
1726         .txq_info_get                   = sfc_tx_queue_info_get,
1727         .fw_version_get                 = sfc_fw_version_get,
1728         .xstats_get_by_id               = sfc_xstats_get_by_id,
1729         .xstats_get_names_by_id         = sfc_xstats_get_names_by_id,
1730         .pool_ops_supported             = sfc_pool_ops_supported,
1731 };
1732
1733 /**
1734  * Duplicate a string in potentially shared memory required for
1735  * multi-process support.
1736  *
1737  * strdup() allocates from process-local heap/memory.
1738  */
1739 static char *
1740 sfc_strdup(const char *str)
1741 {
1742         size_t size;
1743         char *copy;
1744
1745         if (str == NULL)
1746                 return NULL;
1747
1748         size = strlen(str) + 1;
1749         copy = rte_malloc(__func__, size, 0);
1750         if (copy != NULL)
1751                 rte_memcpy(copy, str, size);
1752
1753         return copy;
1754 }
1755
1756 static int
1757 sfc_eth_dev_set_ops(struct rte_eth_dev *dev)
1758 {
1759         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
1760         struct sfc_adapter_shared *sas = sfc_adapter_shared_by_eth_dev(dev);
1761         const struct sfc_dp_rx *dp_rx;
1762         const struct sfc_dp_tx *dp_tx;
1763         const efx_nic_cfg_t *encp;
1764         unsigned int avail_caps = 0;
1765         const char *rx_name = NULL;
1766         const char *tx_name = NULL;
1767         int rc;
1768
1769         switch (sa->family) {
1770         case EFX_FAMILY_HUNTINGTON:
1771         case EFX_FAMILY_MEDFORD:
1772         case EFX_FAMILY_MEDFORD2:
1773                 avail_caps |= SFC_DP_HW_FW_CAP_EF10;
1774                 break;
1775         default:
1776                 break;
1777         }
1778
1779         encp = efx_nic_cfg_get(sa->nic);
1780         if (encp->enc_rx_es_super_buffer_supported)
1781                 avail_caps |= SFC_DP_HW_FW_CAP_RX_ES_SUPER_BUFFER;
1782
1783         rc = sfc_kvargs_process(sa, SFC_KVARG_RX_DATAPATH,
1784                                 sfc_kvarg_string_handler, &rx_name);
1785         if (rc != 0)
1786                 goto fail_kvarg_rx_datapath;
1787
1788         if (rx_name != NULL) {
1789                 dp_rx = sfc_dp_find_rx_by_name(&sfc_dp_head, rx_name);
1790                 if (dp_rx == NULL) {
1791                         sfc_err(sa, "Rx datapath %s not found", rx_name);
1792                         rc = ENOENT;
1793                         goto fail_dp_rx;
1794                 }
1795                 if (!sfc_dp_match_hw_fw_caps(&dp_rx->dp, avail_caps)) {
1796                         sfc_err(sa,
1797                                 "Insufficient Hw/FW capabilities to use Rx datapath %s",
1798                                 rx_name);
1799                         rc = EINVAL;
1800                         goto fail_dp_rx_caps;
1801                 }
1802         } else {
1803                 dp_rx = sfc_dp_find_rx_by_caps(&sfc_dp_head, avail_caps);
1804                 if (dp_rx == NULL) {
1805                         sfc_err(sa, "Rx datapath by caps %#x not found",
1806                                 avail_caps);
1807                         rc = ENOENT;
1808                         goto fail_dp_rx;
1809                 }
1810         }
1811
1812         sas->dp_rx_name = sfc_strdup(dp_rx->dp.name);
1813         if (sas->dp_rx_name == NULL) {
1814                 rc = ENOMEM;
1815                 goto fail_dp_rx_name;
1816         }
1817
1818         sfc_notice(sa, "use %s Rx datapath", sas->dp_rx_name);
1819
1820         rc = sfc_kvargs_process(sa, SFC_KVARG_TX_DATAPATH,
1821                                 sfc_kvarg_string_handler, &tx_name);
1822         if (rc != 0)
1823                 goto fail_kvarg_tx_datapath;
1824
1825         if (tx_name != NULL) {
1826                 dp_tx = sfc_dp_find_tx_by_name(&sfc_dp_head, tx_name);
1827                 if (dp_tx == NULL) {
1828                         sfc_err(sa, "Tx datapath %s not found", tx_name);
1829                         rc = ENOENT;
1830                         goto fail_dp_tx;
1831                 }
1832                 if (!sfc_dp_match_hw_fw_caps(&dp_tx->dp, avail_caps)) {
1833                         sfc_err(sa,
1834                                 "Insufficient Hw/FW capabilities to use Tx datapath %s",
1835                                 tx_name);
1836                         rc = EINVAL;
1837                         goto fail_dp_tx_caps;
1838                 }
1839         } else {
1840                 dp_tx = sfc_dp_find_tx_by_caps(&sfc_dp_head, avail_caps);
1841                 if (dp_tx == NULL) {
1842                         sfc_err(sa, "Tx datapath by caps %#x not found",
1843                                 avail_caps);
1844                         rc = ENOENT;
1845                         goto fail_dp_tx;
1846                 }
1847         }
1848
1849         sas->dp_tx_name = sfc_strdup(dp_tx->dp.name);
1850         if (sas->dp_tx_name == NULL) {
1851                 rc = ENOMEM;
1852                 goto fail_dp_tx_name;
1853         }
1854
1855         sfc_notice(sa, "use %s Tx datapath", sas->dp_tx_name);
1856
1857         sa->priv.dp_rx = dp_rx;
1858         sa->priv.dp_tx = dp_tx;
1859
1860         dev->rx_pkt_burst = dp_rx->pkt_burst;
1861         dev->tx_pkt_prepare = dp_tx->pkt_prepare;
1862         dev->tx_pkt_burst = dp_tx->pkt_burst;
1863
1864         dev->dev_ops = &sfc_eth_dev_ops;
1865
1866         return 0;
1867
1868 fail_dp_tx_name:
1869 fail_dp_tx_caps:
1870 fail_dp_tx:
1871 fail_kvarg_tx_datapath:
1872         rte_free(sas->dp_rx_name);
1873         sas->dp_rx_name = NULL;
1874
1875 fail_dp_rx_name:
1876 fail_dp_rx_caps:
1877 fail_dp_rx:
1878 fail_kvarg_rx_datapath:
1879         return rc;
1880 }
1881
1882 static void
1883 sfc_eth_dev_clear_ops(struct rte_eth_dev *dev)
1884 {
1885         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
1886         struct sfc_adapter_shared *sas = sfc_adapter_shared_by_eth_dev(dev);
1887
1888         dev->dev_ops = NULL;
1889         dev->tx_pkt_prepare = NULL;
1890         dev->rx_pkt_burst = NULL;
1891         dev->tx_pkt_burst = NULL;
1892
1893         rte_free(sas->dp_tx_name);
1894         sas->dp_tx_name = NULL;
1895         sa->priv.dp_tx = NULL;
1896
1897         rte_free(sas->dp_rx_name);
1898         sas->dp_rx_name = NULL;
1899         sa->priv.dp_rx = NULL;
1900 }
1901
1902 static const struct eth_dev_ops sfc_eth_dev_secondary_ops = {
1903         .dev_supported_ptypes_get       = sfc_dev_supported_ptypes_get,
1904         .rx_queue_count                 = sfc_rx_queue_count,
1905         .rx_descriptor_done             = sfc_rx_descriptor_done,
1906         .rx_descriptor_status           = sfc_rx_descriptor_status,
1907         .tx_descriptor_status           = sfc_tx_descriptor_status,
1908         .reta_query                     = sfc_dev_rss_reta_query,
1909         .rss_hash_conf_get              = sfc_dev_rss_hash_conf_get,
1910         .rxq_info_get                   = sfc_rx_queue_info_get,
1911         .txq_info_get                   = sfc_tx_queue_info_get,
1912 };
1913
1914 static int
1915 sfc_eth_dev_secondary_init(struct rte_eth_dev *dev, uint32_t logtype_main)
1916 {
1917         struct sfc_adapter_shared *sas = sfc_adapter_shared_by_eth_dev(dev);
1918         struct sfc_adapter_priv *sap;
1919         const struct sfc_dp_rx *dp_rx;
1920         const struct sfc_dp_tx *dp_tx;
1921         int rc;
1922
1923         /*
1924          * Allocate process private data from heap, since it should not
1925          * be located in shared memory allocated using rte_malloc() API.
1926          */
1927         sap = calloc(1, sizeof(*sap));
1928         if (sap == NULL) {
1929                 rc = ENOMEM;
1930                 goto fail_alloc_priv;
1931         }
1932
1933         sap->logtype_main = logtype_main;
1934
1935         dp_rx = sfc_dp_find_rx_by_name(&sfc_dp_head, sas->dp_rx_name);
1936         if (dp_rx == NULL) {
1937                 SFC_LOG(sas, RTE_LOG_ERR, logtype_main,
1938                         "cannot find %s Rx datapath", sas->dp_rx_name);
1939                 rc = ENOENT;
1940                 goto fail_dp_rx;
1941         }
1942         if (~dp_rx->features & SFC_DP_RX_FEAT_MULTI_PROCESS) {
1943                 SFC_LOG(sas, RTE_LOG_ERR, logtype_main,
1944                         "%s Rx datapath does not support multi-process",
1945                         sas->dp_rx_name);
1946                 rc = EINVAL;
1947                 goto fail_dp_rx_multi_process;
1948         }
1949
1950         dp_tx = sfc_dp_find_tx_by_name(&sfc_dp_head, sas->dp_tx_name);
1951         if (dp_tx == NULL) {
1952                 SFC_LOG(sas, RTE_LOG_ERR, logtype_main,
1953                         "cannot find %s Tx datapath", sas->dp_tx_name);
1954                 rc = ENOENT;
1955                 goto fail_dp_tx;
1956         }
1957         if (~dp_tx->features & SFC_DP_TX_FEAT_MULTI_PROCESS) {
1958                 SFC_LOG(sas, RTE_LOG_ERR, logtype_main,
1959                         "%s Tx datapath does not support multi-process",
1960                         sas->dp_tx_name);
1961                 rc = EINVAL;
1962                 goto fail_dp_tx_multi_process;
1963         }
1964
1965         sap->dp_rx = dp_rx;
1966         sap->dp_tx = dp_tx;
1967
1968         dev->process_private = sap;
1969         dev->rx_pkt_burst = dp_rx->pkt_burst;
1970         dev->tx_pkt_prepare = dp_tx->pkt_prepare;
1971         dev->tx_pkt_burst = dp_tx->pkt_burst;
1972         dev->dev_ops = &sfc_eth_dev_secondary_ops;
1973
1974         return 0;
1975
1976 fail_dp_tx_multi_process:
1977 fail_dp_tx:
1978 fail_dp_rx_multi_process:
1979 fail_dp_rx:
1980         free(sap);
1981
1982 fail_alloc_priv:
1983         return rc;
1984 }
1985
1986 static void
1987 sfc_eth_dev_secondary_clear_ops(struct rte_eth_dev *dev)
1988 {
1989         free(dev->process_private);
1990         dev->process_private = NULL;
1991         dev->dev_ops = NULL;
1992         dev->tx_pkt_prepare = NULL;
1993         dev->tx_pkt_burst = NULL;
1994         dev->rx_pkt_burst = NULL;
1995 }
1996
1997 static void
1998 sfc_register_dp(void)
1999 {
2000         /* Register once */
2001         if (TAILQ_EMPTY(&sfc_dp_head)) {
2002                 /* Prefer EF10 datapath */
2003                 sfc_dp_register(&sfc_dp_head, &sfc_ef10_essb_rx.dp);
2004                 sfc_dp_register(&sfc_dp_head, &sfc_ef10_rx.dp);
2005                 sfc_dp_register(&sfc_dp_head, &sfc_efx_rx.dp);
2006
2007                 sfc_dp_register(&sfc_dp_head, &sfc_ef10_tx.dp);
2008                 sfc_dp_register(&sfc_dp_head, &sfc_efx_tx.dp);
2009                 sfc_dp_register(&sfc_dp_head, &sfc_ef10_simple_tx.dp);
2010         }
2011 }
2012
2013 static int
2014 sfc_eth_dev_init(struct rte_eth_dev *dev)
2015 {
2016         struct sfc_adapter_shared *sas = sfc_adapter_shared_by_eth_dev(dev);
2017         struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
2018         uint32_t logtype_main;
2019         struct sfc_adapter *sa;
2020         int rc;
2021         const efx_nic_cfg_t *encp;
2022         const struct ether_addr *from;
2023
2024         sfc_register_dp();
2025
2026         logtype_main = sfc_register_logtype(&pci_dev->addr,
2027                                             SFC_LOGTYPE_MAIN_STR,
2028                                             RTE_LOG_NOTICE);
2029
2030         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
2031                 return -sfc_eth_dev_secondary_init(dev, logtype_main);
2032
2033         /* Required for logging */
2034         sas->pci_addr = pci_dev->addr;
2035         sas->port_id = dev->data->port_id;
2036
2037         /*
2038          * Allocate process private data from heap, since it should not
2039          * be located in shared memory allocated using rte_malloc() API.
2040          */
2041         sa = calloc(1, sizeof(*sa));
2042         if (sa == NULL) {
2043                 rc = ENOMEM;
2044                 goto fail_alloc_sa;
2045         }
2046
2047         dev->process_private = sa;
2048
2049         /* Required for logging */
2050         sa->priv.shared = sas;
2051         sa->priv.logtype_main = logtype_main;
2052
2053         sa->eth_dev = dev;
2054
2055         /* Copy PCI device info to the dev->data */
2056         rte_eth_copy_pci_info(dev, pci_dev);
2057
2058         rc = sfc_kvargs_parse(sa);
2059         if (rc != 0)
2060                 goto fail_kvargs_parse;
2061
2062         sfc_log_init(sa, "entry");
2063
2064         dev->data->mac_addrs = rte_zmalloc("sfc", ETHER_ADDR_LEN, 0);
2065         if (dev->data->mac_addrs == NULL) {
2066                 rc = ENOMEM;
2067                 goto fail_mac_addrs;
2068         }
2069
2070         sfc_adapter_lock_init(sa);
2071         sfc_adapter_lock(sa);
2072
2073         sfc_log_init(sa, "probing");
2074         rc = sfc_probe(sa);
2075         if (rc != 0)
2076                 goto fail_probe;
2077
2078         sfc_log_init(sa, "set device ops");
2079         rc = sfc_eth_dev_set_ops(dev);
2080         if (rc != 0)
2081                 goto fail_set_ops;
2082
2083         sfc_log_init(sa, "attaching");
2084         rc = sfc_attach(sa);
2085         if (rc != 0)
2086                 goto fail_attach;
2087
2088         encp = efx_nic_cfg_get(sa->nic);
2089
2090         /*
2091          * The arguments are really reverse order in comparison to
2092          * Linux kernel. Copy from NIC config to Ethernet device data.
2093          */
2094         from = (const struct ether_addr *)(encp->enc_mac_addr);
2095         ether_addr_copy(from, &dev->data->mac_addrs[0]);
2096
2097         sfc_adapter_unlock(sa);
2098
2099         sfc_log_init(sa, "done");
2100         return 0;
2101
2102 fail_attach:
2103         sfc_eth_dev_clear_ops(dev);
2104
2105 fail_set_ops:
2106         sfc_unprobe(sa);
2107
2108 fail_probe:
2109         sfc_adapter_unlock(sa);
2110         sfc_adapter_lock_fini(sa);
2111         rte_free(dev->data->mac_addrs);
2112         dev->data->mac_addrs = NULL;
2113
2114 fail_mac_addrs:
2115         sfc_kvargs_cleanup(sa);
2116
2117 fail_kvargs_parse:
2118         sfc_log_init(sa, "failed %d", rc);
2119         dev->process_private = NULL;
2120         free(sa);
2121
2122 fail_alloc_sa:
2123         SFC_ASSERT(rc > 0);
2124         return -rc;
2125 }
2126
2127 static int
2128 sfc_eth_dev_uninit(struct rte_eth_dev *dev)
2129 {
2130         struct sfc_adapter *sa;
2131
2132         if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
2133                 sfc_eth_dev_secondary_clear_ops(dev);
2134                 return 0;
2135         }
2136
2137         sa = sfc_adapter_by_eth_dev(dev);
2138         sfc_log_init(sa, "entry");
2139
2140         sfc_adapter_lock(sa);
2141
2142         sfc_eth_dev_clear_ops(dev);
2143
2144         sfc_detach(sa);
2145         sfc_unprobe(sa);
2146
2147         sfc_kvargs_cleanup(sa);
2148
2149         sfc_adapter_unlock(sa);
2150         sfc_adapter_lock_fini(sa);
2151
2152         sfc_log_init(sa, "done");
2153
2154         /* Required for logging, so cleanup last */
2155         sa->eth_dev = NULL;
2156
2157         dev->process_private = NULL;
2158         free(sa);
2159
2160         return 0;
2161 }
2162
2163 static const struct rte_pci_id pci_id_sfc_efx_map[] = {
2164         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_FARMINGDALE) },
2165         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_FARMINGDALE_VF) },
2166         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_GREENPORT) },
2167         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_GREENPORT_VF) },
2168         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_MEDFORD) },
2169         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_MEDFORD_VF) },
2170         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_MEDFORD2) },
2171         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_MEDFORD2_VF) },
2172         { .vendor_id = 0 /* sentinel */ }
2173 };
2174
2175 static int sfc_eth_dev_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
2176         struct rte_pci_device *pci_dev)
2177 {
2178         return rte_eth_dev_pci_generic_probe(pci_dev,
2179                 sizeof(struct sfc_adapter_shared), sfc_eth_dev_init);
2180 }
2181
2182 static int sfc_eth_dev_pci_remove(struct rte_pci_device *pci_dev)
2183 {
2184         return rte_eth_dev_pci_generic_remove(pci_dev, sfc_eth_dev_uninit);
2185 }
2186
2187 static struct rte_pci_driver sfc_efx_pmd = {
2188         .id_table = pci_id_sfc_efx_map,
2189         .drv_flags =
2190                 RTE_PCI_DRV_INTR_LSC |
2191                 RTE_PCI_DRV_NEED_MAPPING,
2192         .probe = sfc_eth_dev_pci_probe,
2193         .remove = sfc_eth_dev_pci_remove,
2194 };
2195
2196 RTE_PMD_REGISTER_PCI(net_sfc_efx, sfc_efx_pmd);
2197 RTE_PMD_REGISTER_PCI_TABLE(net_sfc_efx, pci_id_sfc_efx_map);
2198 RTE_PMD_REGISTER_KMOD_DEP(net_sfc_efx, "* igb_uio | uio_pci_generic | vfio-pci");
2199 RTE_PMD_REGISTER_PARAM_STRING(net_sfc_efx,
2200         SFC_KVARG_RX_DATAPATH "=" SFC_KVARG_VALUES_RX_DATAPATH " "
2201         SFC_KVARG_TX_DATAPATH "=" SFC_KVARG_VALUES_TX_DATAPATH " "
2202         SFC_KVARG_PERF_PROFILE "=" SFC_KVARG_VALUES_PERF_PROFILE " "
2203         SFC_KVARG_FW_VARIANT "=" SFC_KVARG_VALUES_FW_VARIANT " "
2204         SFC_KVARG_RXD_WAIT_TIMEOUT_NS "=<long> "
2205         SFC_KVARG_STATS_UPDATE_PERIOD_MS "=<long>");
2206
2207 RTE_INIT(sfc_driver_register_logtype)
2208 {
2209         int ret;
2210
2211         ret = rte_log_register_type_and_pick_level(SFC_LOGTYPE_PREFIX "driver",
2212                                                    RTE_LOG_NOTICE);
2213         sfc_logtype_driver = (ret < 0) ? RTE_LOGTYPE_PMD : ret;
2214 }