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