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