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