drivers/net/sfc/sfc_ethdev.c

   1 /*-
   2  * Copyright (c) 2016 Solarflare Communications Inc.
   3  * All rights reserved.
   4  *
   5  * This software was jointly developed between OKTET Labs (under contract
   6  * for Solarflare) and Solarflare Communications, Inc.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright notice,
  12  *    this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright notice,
  14  *    this list of conditions and the following disclaimer in the documentation
  15  *    and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  18  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  19  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  24  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  25  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  26  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  27  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #include <rte_dev.h>
  31 #include <rte_ethdev.h>
  32 #include <rte_pci.h>
  33
  34 #include "efx.h"
  35
  36 #include "sfc.h"
  37 #include "sfc_debug.h"
  38 #include "sfc_log.h"
  39 #include "sfc_kvargs.h"
  40 #include "sfc_ev.h"
  41 #include "sfc_rx.h"
  42 #include "sfc_tx.h"
  43
  44
  45 static void
  46 sfc_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
  47 {
  48         struct sfc_adapter *sa = dev->data->dev_private;
  49         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
  50
  51         sfc_log_init(sa, "entry");
  52
  53         dev_info->pci_dev = RTE_DEV_TO_PCI(dev->device);
  54         dev_info->max_rx_pktlen = EFX_MAC_PDU_MAX;
  55
  56         /* Autonegotiation may be disabled */
  57         dev_info->speed_capa = ETH_LINK_SPEED_FIXED;
  58         if (sa->port.phy_adv_cap_mask & EFX_PHY_CAP_1000FDX)
  59                 dev_info->speed_capa |= ETH_LINK_SPEED_1G;
  60         if (sa->port.phy_adv_cap_mask & EFX_PHY_CAP_10000FDX)
  61                 dev_info->speed_capa |= ETH_LINK_SPEED_10G;
  62         if (sa->port.phy_adv_cap_mask & EFX_PHY_CAP_40000FDX)
  63                 dev_info->speed_capa |= ETH_LINK_SPEED_40G;
  64
  65         dev_info->max_rx_queues = sa->rxq_max;
  66         dev_info->max_tx_queues = sa->txq_max;
  67
  68         /* By default packets are dropped if no descriptors are available */
  69         dev_info->default_rxconf.rx_drop_en = 1;
  70
  71         dev_info->rx_offload_capa =
  72                 DEV_RX_OFFLOAD_IPV4_CKSUM |
  73                 DEV_RX_OFFLOAD_UDP_CKSUM |
  74                 DEV_RX_OFFLOAD_TCP_CKSUM;
  75
  76         dev_info->tx_offload_capa =
  77                 DEV_TX_OFFLOAD_IPV4_CKSUM |
  78                 DEV_TX_OFFLOAD_UDP_CKSUM |
  79                 DEV_TX_OFFLOAD_TCP_CKSUM;
  80
  81         dev_info->default_txconf.txq_flags = ETH_TXQ_FLAGS_NOXSUMSCTP;
  82         if (!encp->enc_hw_tx_insert_vlan_enabled)
  83                 dev_info->default_txconf.txq_flags |= ETH_TXQ_FLAGS_NOVLANOFFL;
  84         else
  85                 dev_info->tx_offload_capa |= DEV_TX_OFFLOAD_VLAN_INSERT;
  86
  87         dev_info->rx_desc_lim.nb_max = EFX_RXQ_MAXNDESCS;
  88         dev_info->rx_desc_lim.nb_min = EFX_RXQ_MINNDESCS;
  89         /* The RXQ hardware requires that the descriptor count is a power
  90          * of 2, but rx_desc_lim cannot properly describe that constraint.
  91          */
  92         dev_info->rx_desc_lim.nb_align = EFX_RXQ_MINNDESCS;
  93
  94         dev_info->tx_desc_lim.nb_max = sa->txq_max_entries;
  95         dev_info->tx_desc_lim.nb_min = EFX_TXQ_MINNDESCS;
  96         /*
  97          * The TXQ hardware requires that the descriptor count is a power
  98          * of 2, but tx_desc_lim cannot properly describe that constraint
  99          */
 100         dev_info->tx_desc_lim.nb_align = EFX_TXQ_MINNDESCS;
 101 }
 102
 103 static const uint32_t *
 104 sfc_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 105 {
 106         static const uint32_t ptypes[] = {
 107                 RTE_PTYPE_L2_ETHER,
 108                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 109                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 110                 RTE_PTYPE_L4_TCP,
 111                 RTE_PTYPE_L4_UDP,
 112                 RTE_PTYPE_UNKNOWN
 113         };
 114
 115         if (dev->rx_pkt_burst == sfc_recv_pkts)
 116                 return ptypes;
 117
 118         return NULL;
 119 }
 120
 121 static int
 122 sfc_dev_configure(struct rte_eth_dev *dev)
 123 {
 124         struct rte_eth_dev_data *dev_data = dev->data;
 125         struct sfc_adapter *sa = dev_data->dev_private;
 126         int rc;
 127
 128         sfc_log_init(sa, "entry n_rxq=%u n_txq=%u",
 129                      dev_data->nb_rx_queues, dev_data->nb_tx_queues);
 130
 131         sfc_adapter_lock(sa);
 132         switch (sa->state) {
 133         case SFC_ADAPTER_CONFIGURED:
 134                 sfc_close(sa);
 135                 SFC_ASSERT(sa->state == SFC_ADAPTER_INITIALIZED);
 136                 /* FALLTHROUGH */
 137         case SFC_ADAPTER_INITIALIZED:
 138                 rc = sfc_configure(sa);
 139                 break;
 140         default:
 141                 sfc_err(sa, "unexpected adapter state %u to configure",
 142                         sa->state);
 143                 rc = EINVAL;
 144                 break;
 145         }
 146         sfc_adapter_unlock(sa);
 147
 148         sfc_log_init(sa, "done %d", rc);
 149         SFC_ASSERT(rc >= 0);
 150         return -rc;
 151 }
 152
 153 static int
 154 sfc_dev_start(struct rte_eth_dev *dev)
 155 {
 156         struct sfc_adapter *sa = dev->data->dev_private;
 157         int rc;
 158
 159         sfc_log_init(sa, "entry");
 160
 161         sfc_adapter_lock(sa);
 162         rc = sfc_start(sa);
 163         sfc_adapter_unlock(sa);
 164
 165         sfc_log_init(sa, "done %d", rc);
 166         SFC_ASSERT(rc >= 0);
 167         return -rc;
 168 }
 169
 170 static int
 171 sfc_dev_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 172 {
 173         struct sfc_adapter *sa = dev->data->dev_private;
 174         struct rte_eth_link *dev_link = &dev->data->dev_link;
 175         struct rte_eth_link old_link;
 176         struct rte_eth_link current_link;
 177
 178         sfc_log_init(sa, "entry");
 179
 180         if (sa->state != SFC_ADAPTER_STARTED)
 181                 return 0;
 182
 183 retry:
 184         EFX_STATIC_ASSERT(sizeof(*dev_link) == sizeof(rte_atomic64_t));
 185         *(int64_t *)&old_link = rte_atomic64_read((rte_atomic64_t *)dev_link);
 186
 187         if (wait_to_complete) {
 188                 efx_link_mode_t link_mode;
 189
 190                 efx_port_poll(sa->nic, &link_mode);
 191                 sfc_port_link_mode_to_info(link_mode, &current_link);
 192
 193                 if (!rte_atomic64_cmpset((volatile uint64_t *)dev_link,
 194                                          *(uint64_t *)&old_link,
 195                                          *(uint64_t *)&current_link))
 196                         goto retry;
 197         } else {
 198                 sfc_ev_mgmt_qpoll(sa);
 199                 *(int64_t *)&current_link =
 200                         rte_atomic64_read((rte_atomic64_t *)dev_link);
 201         }
 202
 203         if (old_link.link_status != current_link.link_status)
 204                 sfc_info(sa, "Link status is %s",
 205                          current_link.link_status ? "UP" : "DOWN");
 206
 207         return old_link.link_status == current_link.link_status ? 0 : -1;
 208 }
 209
 210 static void
 211 sfc_dev_stop(struct rte_eth_dev *dev)
 212 {
 213         struct sfc_adapter *sa = dev->data->dev_private;
 214
 215         sfc_log_init(sa, "entry");
 216
 217         sfc_adapter_lock(sa);
 218         sfc_stop(sa);
 219         sfc_adapter_unlock(sa);
 220
 221         sfc_log_init(sa, "done");
 222 }
 223
 224 static int
 225 sfc_dev_set_link_up(struct rte_eth_dev *dev)
 226 {
 227         struct sfc_adapter *sa = dev->data->dev_private;
 228         int rc;
 229
 230         sfc_log_init(sa, "entry");
 231
 232         sfc_adapter_lock(sa);
 233         rc = sfc_start(sa);
 234         sfc_adapter_unlock(sa);
 235
 236         SFC_ASSERT(rc >= 0);
 237         return -rc;
 238 }
 239
 240 static int
 241 sfc_dev_set_link_down(struct rte_eth_dev *dev)
 242 {
 243         struct sfc_adapter *sa = dev->data->dev_private;
 244
 245         sfc_log_init(sa, "entry");
 246
 247         sfc_adapter_lock(sa);
 248         sfc_stop(sa);
 249         sfc_adapter_unlock(sa);
 250
 251         return 0;
 252 }
 253
 254 static void
 255 sfc_dev_close(struct rte_eth_dev *dev)
 256 {
 257         struct sfc_adapter *sa = dev->data->dev_private;
 258
 259         sfc_log_init(sa, "entry");
 260
 261         sfc_adapter_lock(sa);
 262         switch (sa->state) {
 263         case SFC_ADAPTER_STARTED:
 264                 sfc_stop(sa);
 265                 SFC_ASSERT(sa->state == SFC_ADAPTER_CONFIGURED);
 266                 /* FALLTHROUGH */
 267         case SFC_ADAPTER_CONFIGURED:
 268                 sfc_close(sa);
 269                 SFC_ASSERT(sa->state == SFC_ADAPTER_INITIALIZED);
 270                 /* FALLTHROUGH */
 271         case SFC_ADAPTER_INITIALIZED:
 272                 break;
 273         default:
 274                 sfc_err(sa, "unexpected adapter state %u on close", sa->state);
 275                 break;
 276         }
 277         sfc_adapter_unlock(sa);
 278
 279         sfc_log_init(sa, "done");
 280 }
 281
 282 static void
 283 sfc_dev_filter_set(struct rte_eth_dev *dev, enum sfc_dev_filter_mode mode,
 284                    boolean_t enabled)
 285 {
 286         struct sfc_port *port;
 287         boolean_t *toggle;
 288         struct sfc_adapter *sa = dev->data->dev_private;
 289         boolean_t allmulti = (mode == SFC_DEV_FILTER_MODE_ALLMULTI);
 290         const char *desc = (allmulti) ? "all-multi" : "promiscuous";
 291
 292         sfc_adapter_lock(sa);
 293
 294         port = &sa->port;
 295         toggle = (allmulti) ? (&port->allmulti) : (&port->promisc);
 296
 297         if (*toggle != enabled) {
 298                 *toggle = enabled;
 299
 300                 if ((sa->state == SFC_ADAPTER_STARTED) &&
 301                     (sfc_set_rx_mode(sa) != 0)) {
 302                         *toggle = !(enabled);
 303                         sfc_warn(sa, "Failed to %s %s mode",
 304                                  ((enabled) ? "enable" : "disable"), desc);
 305                 }
 306         }
 307
 308         sfc_adapter_unlock(sa);
 309 }
 310
 311 static void
 312 sfc_dev_promisc_enable(struct rte_eth_dev *dev)
 313 {
 314         sfc_dev_filter_set(dev, SFC_DEV_FILTER_MODE_PROMISC, B_TRUE);
 315 }
 316
 317 static void
 318 sfc_dev_promisc_disable(struct rte_eth_dev *dev)
 319 {
 320         sfc_dev_filter_set(dev, SFC_DEV_FILTER_MODE_PROMISC, B_FALSE);
 321 }
 322
 323 static void
 324 sfc_dev_allmulti_enable(struct rte_eth_dev *dev)
 325 {
 326         sfc_dev_filter_set(dev, SFC_DEV_FILTER_MODE_ALLMULTI, B_TRUE);
 327 }
 328
 329 static void
 330 sfc_dev_allmulti_disable(struct rte_eth_dev *dev)
 331 {
 332         sfc_dev_filter_set(dev, SFC_DEV_FILTER_MODE_ALLMULTI, B_FALSE);
 333 }
 334
 335 static int
 336 sfc_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id,
 337                    uint16_t nb_rx_desc, unsigned int socket_id,
 338                    const struct rte_eth_rxconf *rx_conf,
 339                    struct rte_mempool *mb_pool)
 340 {
 341         struct sfc_adapter *sa = dev->data->dev_private;
 342         int rc;
 343
 344         sfc_log_init(sa, "RxQ=%u nb_rx_desc=%u socket_id=%u",
 345                      rx_queue_id, nb_rx_desc, socket_id);
 346
 347         sfc_adapter_lock(sa);
 348
 349         rc = sfc_rx_qinit(sa, rx_queue_id, nb_rx_desc, socket_id,
 350                           rx_conf, mb_pool);
 351         if (rc != 0)
 352                 goto fail_rx_qinit;
 353
 354         dev->data->rx_queues[rx_queue_id] = sa->rxq_info[rx_queue_id].rxq;
 355
 356         sfc_adapter_unlock(sa);
 357
 358         return 0;
 359
 360 fail_rx_qinit:
 361         sfc_adapter_unlock(sa);
 362         SFC_ASSERT(rc > 0);
 363         return -rc;
 364 }
 365
 366 static void
 367 sfc_rx_queue_release(void *queue)
 368 {
 369         struct sfc_rxq *rxq = queue;
 370         struct sfc_adapter *sa;
 371         unsigned int sw_index;
 372
 373         if (rxq == NULL)
 374                 return;
 375
 376         sa = rxq->evq->sa;
 377         sfc_adapter_lock(sa);
 378
 379         sw_index = sfc_rxq_sw_index(rxq);
 380
 381         sfc_log_init(sa, "RxQ=%u", sw_index);
 382
 383         sa->eth_dev->data->rx_queues[sw_index] = NULL;
 384
 385         sfc_rx_qfini(sa, sw_index);
 386
 387         sfc_adapter_unlock(sa);
 388 }
 389
 390 static int
 391 sfc_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id,
 392                    uint16_t nb_tx_desc, unsigned int socket_id,
 393                    const struct rte_eth_txconf *tx_conf)
 394 {
 395         struct sfc_adapter *sa = dev->data->dev_private;
 396         int rc;
 397
 398         sfc_log_init(sa, "TxQ = %u, nb_tx_desc = %u, socket_id = %u",
 399                      tx_queue_id, nb_tx_desc, socket_id);
 400
 401         sfc_adapter_lock(sa);
 402
 403         rc = sfc_tx_qinit(sa, tx_queue_id, nb_tx_desc, socket_id, tx_conf);
 404         if (rc != 0)
 405                 goto fail_tx_qinit;
 406
 407         dev->data->tx_queues[tx_queue_id] = sa->txq_info[tx_queue_id].txq;
 408
 409         sfc_adapter_unlock(sa);
 410         return 0;
 411
 412 fail_tx_qinit:
 413         sfc_adapter_unlock(sa);
 414         SFC_ASSERT(rc > 0);
 415         return -rc;
 416 }
 417
 418 static void
 419 sfc_tx_queue_release(void *queue)
 420 {
 421         struct sfc_txq *txq = queue;
 422         unsigned int sw_index;
 423         struct sfc_adapter *sa;
 424
 425         if (txq == NULL)
 426                 return;
 427
 428         sw_index = sfc_txq_sw_index(txq);
 429
 430         SFC_ASSERT(txq->evq != NULL);
 431         sa = txq->evq->sa;
 432
 433         sfc_log_init(sa, "TxQ = %u", sw_index);
 434
 435         sfc_adapter_lock(sa);
 436
 437         SFC_ASSERT(sw_index < sa->eth_dev->data->nb_tx_queues);
 438         sa->eth_dev->data->tx_queues[sw_index] = NULL;
 439
 440         sfc_tx_qfini(sa, sw_index);
 441
 442         sfc_adapter_unlock(sa);
 443 }
 444
 445 static void
 446 sfc_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 447 {
 448         struct sfc_adapter *sa = dev->data->dev_private;
 449         struct sfc_port *port = &sa->port;
 450         uint64_t *mac_stats;
 451
 452         rte_spinlock_lock(&port->mac_stats_lock);
 453
 454         if (sfc_port_update_mac_stats(sa) != 0)
 455                 goto unlock;
 456
 457         mac_stats = port->mac_stats_buf;
 458
 459         if (EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask,
 460                                    EFX_MAC_VADAPTER_RX_UNICAST_PACKETS)) {
 461                 stats->ipackets =
 462                         mac_stats[EFX_MAC_VADAPTER_RX_UNICAST_PACKETS] +
 463                         mac_stats[EFX_MAC_VADAPTER_RX_MULTICAST_PACKETS] +
 464                         mac_stats[EFX_MAC_VADAPTER_RX_BROADCAST_PACKETS];
 465                 stats->opackets =
 466                         mac_stats[EFX_MAC_VADAPTER_TX_UNICAST_PACKETS] +
 467                         mac_stats[EFX_MAC_VADAPTER_TX_MULTICAST_PACKETS] +
 468                         mac_stats[EFX_MAC_VADAPTER_TX_BROADCAST_PACKETS];
 469                 stats->ibytes =
 470                         mac_stats[EFX_MAC_VADAPTER_RX_UNICAST_BYTES] +
 471                         mac_stats[EFX_MAC_VADAPTER_RX_MULTICAST_BYTES] +
 472                         mac_stats[EFX_MAC_VADAPTER_RX_BROADCAST_BYTES];
 473                 stats->obytes =
 474                         mac_stats[EFX_MAC_VADAPTER_TX_UNICAST_BYTES] +
 475                         mac_stats[EFX_MAC_VADAPTER_TX_MULTICAST_BYTES] +
 476                         mac_stats[EFX_MAC_VADAPTER_TX_BROADCAST_BYTES];
 477                 stats->imissed = mac_stats[EFX_MAC_VADAPTER_RX_OVERFLOW];
 478                 stats->ierrors = mac_stats[EFX_MAC_VADAPTER_RX_BAD_PACKETS];
 479                 stats->oerrors = mac_stats[EFX_MAC_VADAPTER_TX_BAD_PACKETS];
 480         } else {
 481                 stats->ipackets = mac_stats[EFX_MAC_RX_PKTS];
 482                 stats->opackets = mac_stats[EFX_MAC_TX_PKTS];
 483                 stats->ibytes = mac_stats[EFX_MAC_RX_OCTETS];
 484                 stats->obytes = mac_stats[EFX_MAC_TX_OCTETS];
 485                 /*
 486                  * Take into account stats which are whenever supported
 487                  * on EF10. If some stat is not supported by current
 488                  * firmware variant or HW revision, it is guaranteed
 489                  * to be zero in mac_stats.
 490                  */
 491                 stats->imissed =
 492                         mac_stats[EFX_MAC_RX_NODESC_DROP_CNT] +
 493                         mac_stats[EFX_MAC_PM_TRUNC_BB_OVERFLOW] +
 494                         mac_stats[EFX_MAC_PM_DISCARD_BB_OVERFLOW] +
 495                         mac_stats[EFX_MAC_PM_TRUNC_VFIFO_FULL] +
 496                         mac_stats[EFX_MAC_PM_DISCARD_VFIFO_FULL] +
 497                         mac_stats[EFX_MAC_PM_TRUNC_QBB] +
 498                         mac_stats[EFX_MAC_PM_DISCARD_QBB] +
 499                         mac_stats[EFX_MAC_PM_DISCARD_MAPPING] +
 500                         mac_stats[EFX_MAC_RXDP_Q_DISABLED_PKTS] +
 501                         mac_stats[EFX_MAC_RXDP_DI_DROPPED_PKTS];
 502                 stats->ierrors =
 503                         mac_stats[EFX_MAC_RX_FCS_ERRORS] +
 504                         mac_stats[EFX_MAC_RX_ALIGN_ERRORS] +
 505                         mac_stats[EFX_MAC_RX_JABBER_PKTS];
 506                 /* no oerrors counters supported on EF10 */
 507         }
 508
 509 unlock:
 510         rte_spinlock_unlock(&port->mac_stats_lock);
 511 }
 512
 513 static int
 514 sfc_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
 515                unsigned int xstats_count)
 516 {
 517         struct sfc_adapter *sa = dev->data->dev_private;
 518         struct sfc_port *port = &sa->port;
 519         uint64_t *mac_stats;
 520         int rc;
 521         unsigned int i;
 522         int nstats = 0;
 523
 524         rte_spinlock_lock(&port->mac_stats_lock);
 525
 526         rc = sfc_port_update_mac_stats(sa);
 527         if (rc != 0) {
 528                 SFC_ASSERT(rc > 0);
 529                 nstats = -rc;
 530                 goto unlock;
 531         }
 532
 533         mac_stats = port->mac_stats_buf;
 534
 535         for (i = 0; i < EFX_MAC_NSTATS; ++i) {
 536                 if (EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask, i)) {
 537                         if (xstats != NULL && nstats < (int)xstats_count) {
 538                                 xstats[nstats].id = nstats;
 539                                 xstats[nstats].value = mac_stats[i];
 540                         }
 541                         nstats++;
 542                 }
 543         }
 544
 545 unlock:
 546         rte_spinlock_unlock(&port->mac_stats_lock);
 547
 548         return nstats;
 549 }
 550
 551 static int
 552 sfc_xstats_get_names(struct rte_eth_dev *dev,
 553                      struct rte_eth_xstat_name *xstats_names,
 554                      unsigned int xstats_count)
 555 {
 556         struct sfc_adapter *sa = dev->data->dev_private;
 557         struct sfc_port *port = &sa->port;
 558         unsigned int i;
 559         unsigned int nstats = 0;
 560
 561         for (i = 0; i < EFX_MAC_NSTATS; ++i) {
 562                 if (EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask, i)) {
 563                         if (xstats_names != NULL && nstats < xstats_count)
 564                                 strncpy(xstats_names[nstats].name,
 565                                         efx_mac_stat_name(sa->nic, i),
 566                                         sizeof(xstats_names[0].name));
 567                         nstats++;
 568                 }
 569         }
 570
 571         return nstats;
 572 }
 573
 574 static int
 575 sfc_flow_ctrl_get(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 576 {
 577         struct sfc_adapter *sa = dev->data->dev_private;
 578         unsigned int wanted_fc, link_fc;
 579
 580         memset(fc_conf, 0, sizeof(*fc_conf));
 581
 582         sfc_adapter_lock(sa);
 583
 584         if (sa->state == SFC_ADAPTER_STARTED)
 585                 efx_mac_fcntl_get(sa->nic, &wanted_fc, &link_fc);
 586         else
 587                 link_fc = sa->port.flow_ctrl;
 588
 589         switch (link_fc) {
 590         case 0:
 591                 fc_conf->mode = RTE_FC_NONE;
 592                 break;
 593         case EFX_FCNTL_RESPOND:
 594                 fc_conf->mode = RTE_FC_RX_PAUSE;
 595                 break;
 596         case EFX_FCNTL_GENERATE:
 597                 fc_conf->mode = RTE_FC_TX_PAUSE;
 598                 break;
 599         case (EFX_FCNTL_RESPOND | EFX_FCNTL_GENERATE):
 600                 fc_conf->mode = RTE_FC_FULL;
 601                 break;
 602         default:
 603                 sfc_err(sa, "%s: unexpected flow control value %#x",
 604                         __func__, link_fc);
 605         }
 606
 607         fc_conf->autoneg = sa->port.flow_ctrl_autoneg;
 608
 609         sfc_adapter_unlock(sa);
 610
 611         return 0;
 612 }
 613
 614 static int
 615 sfc_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 616 {
 617         struct sfc_adapter *sa = dev->data->dev_private;
 618         struct sfc_port *port = &sa->port;
 619         unsigned int fcntl;
 620         int rc;
 621
 622         if (fc_conf->high_water != 0 || fc_conf->low_water != 0 ||
 623             fc_conf->pause_time != 0 || fc_conf->send_xon != 0 ||
 624             fc_conf->mac_ctrl_frame_fwd != 0) {
 625                 sfc_err(sa, "unsupported flow control settings specified");
 626                 rc = EINVAL;
 627                 goto fail_inval;
 628         }
 629
 630         switch (fc_conf->mode) {
 631         case RTE_FC_NONE:
 632                 fcntl = 0;
 633                 break;
 634         case RTE_FC_RX_PAUSE:
 635                 fcntl = EFX_FCNTL_RESPOND;
 636                 break;
 637         case RTE_FC_TX_PAUSE:
 638                 fcntl = EFX_FCNTL_GENERATE;
 639                 break;
 640         case RTE_FC_FULL:
 641                 fcntl = EFX_FCNTL_RESPOND | EFX_FCNTL_GENERATE;
 642                 break;
 643         default:
 644                 rc = EINVAL;
 645                 goto fail_inval;
 646         }
 647
 648         sfc_adapter_lock(sa);
 649
 650         if (sa->state == SFC_ADAPTER_STARTED) {
 651                 rc = efx_mac_fcntl_set(sa->nic, fcntl, fc_conf->autoneg);
 652                 if (rc != 0)
 653                         goto fail_mac_fcntl_set;
 654         }
 655
 656         port->flow_ctrl = fcntl;
 657         port->flow_ctrl_autoneg = fc_conf->autoneg;
 658
 659         sfc_adapter_unlock(sa);
 660
 661         return 0;
 662
 663 fail_mac_fcntl_set:
 664         sfc_adapter_unlock(sa);
 665 fail_inval:
 666         SFC_ASSERT(rc > 0);
 667         return -rc;
 668 }
 669
 670 static int
 671 sfc_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 672 {
 673         struct sfc_adapter *sa = dev->data->dev_private;
 674         size_t pdu = EFX_MAC_PDU(mtu);
 675         size_t old_pdu;
 676         int rc;
 677
 678         sfc_log_init(sa, "mtu=%u", mtu);
 679
 680         rc = EINVAL;
 681         if (pdu < EFX_MAC_PDU_MIN) {
 682                 sfc_err(sa, "too small MTU %u (PDU size %u less than min %u)",
 683                         (unsigned int)mtu, (unsigned int)pdu,
 684                         EFX_MAC_PDU_MIN);
 685                 goto fail_inval;
 686         }
 687         if (pdu > EFX_MAC_PDU_MAX) {
 688                 sfc_err(sa, "too big MTU %u (PDU size %u greater than max %u)",
 689                         (unsigned int)mtu, (unsigned int)pdu,
 690                         EFX_MAC_PDU_MAX);
 691                 goto fail_inval;
 692         }
 693
 694         sfc_adapter_lock(sa);
 695
 696         if (pdu != sa->port.pdu) {
 697                 if (sa->state == SFC_ADAPTER_STARTED) {
 698                         sfc_stop(sa);
 699
 700                         old_pdu = sa->port.pdu;
 701                         sa->port.pdu = pdu;
 702                         rc = sfc_start(sa);
 703                         if (rc != 0)
 704                                 goto fail_start;
 705                 } else {
 706                         sa->port.pdu = pdu;
 707                 }
 708         }
 709
 710         /*
 711          * The driver does not use it, but other PMDs update jumbo_frame
 712          * flag and max_rx_pkt_len when MTU is set.
 713          */
 714         dev->data->dev_conf.rxmode.jumbo_frame = (mtu > ETHER_MAX_LEN);
 715         dev->data->dev_conf.rxmode.max_rx_pkt_len = sa->port.pdu;
 716
 717         sfc_adapter_unlock(sa);
 718
 719         sfc_log_init(sa, "done");
 720         return 0;
 721
 722 fail_start:
 723         sa->port.pdu = old_pdu;
 724         if (sfc_start(sa) != 0)
 725                 sfc_err(sa, "cannot start with neither new (%u) nor old (%u) "
 726                         "PDU max size - port is stopped",
 727                         (unsigned int)pdu, (unsigned int)old_pdu);
 728         sfc_adapter_unlock(sa);
 729
 730 fail_inval:
 731         sfc_log_init(sa, "failed %d", rc);
 732         SFC_ASSERT(rc > 0);
 733         return -rc;
 734 }
 735 static void
 736 sfc_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
 737 {
 738         struct sfc_adapter *sa = dev->data->dev_private;
 739         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
 740         int rc;
 741
 742         sfc_adapter_lock(sa);
 743
 744         if (sa->state != SFC_ADAPTER_STARTED) {
 745                 sfc_info(sa, "the port is not started");
 746                 sfc_info(sa, "the new MAC address will be set on port start");
 747
 748                 goto unlock;
 749         }
 750
 751         if (encp->enc_allow_set_mac_with_installed_filters) {
 752                 rc = efx_mac_addr_set(sa->nic, mac_addr->addr_bytes);
 753                 if (rc != 0) {
 754                         sfc_err(sa, "cannot set MAC address (rc = %u)", rc);
 755                         goto unlock;
 756                 }
 757
 758                 /*
 759                  * Changing the MAC address by means of MCDI request
 760                  * has no effect on received traffic, therefore
 761                  * we also need to update unicast filters
 762                  */
 763                 rc = sfc_set_rx_mode(sa);
 764                 if (rc != 0)
 765                         sfc_err(sa, "cannot set filter (rc = %u)", rc);
 766         } else {
 767                 sfc_warn(sa, "cannot set MAC address with filters installed");
 768                 sfc_warn(sa, "adapter will be restarted to pick the new MAC");
 769                 sfc_warn(sa, "(some traffic may be dropped)");
 770
 771                 /*
 772                  * Since setting MAC address with filters installed is not
 773                  * allowed on the adapter, one needs to simply restart adapter
 774                  * so that the new MAC address will be taken from an outer
 775                  * storage and set flawlessly by means of sfc_start() call
 776                  */
 777                 sfc_stop(sa);
 778                 rc = sfc_start(sa);
 779                 if (rc != 0)
 780                         sfc_err(sa, "cannot restart adapter (rc = %u)", rc);
 781         }
 782
 783 unlock:
 784         sfc_adapter_unlock(sa);
 785 }
 786
 787
 788 static int
 789 sfc_set_mc_addr_list(struct rte_eth_dev *dev, struct ether_addr *mc_addr_set,
 790                      uint32_t nb_mc_addr)
 791 {
 792         struct sfc_adapter *sa = dev->data->dev_private;
 793         uint8_t *mc_addrs_p;
 794         uint8_t *mc_addrs;
 795         int rc;
 796         unsigned int i;
 797
 798         if (nb_mc_addr > EFX_MAC_MULTICAST_LIST_MAX) {
 799                 sfc_err(sa, "too many multicast addresses: %u > %u",
 800                          nb_mc_addr, EFX_MAC_MULTICAST_LIST_MAX);
 801                 return -EINVAL;
 802         }
 803
 804         mc_addrs_p = rte_calloc("mc-addrs", nb_mc_addr, EFX_MAC_ADDR_LEN, 0);
 805         if (mc_addrs_p == NULL)
 806                 return -ENOMEM;
 807
 808         mc_addrs = mc_addrs_p;
 809
 810         for (i = 0; i < nb_mc_addr; ++i) {
 811                 (void)rte_memcpy(mc_addrs, mc_addr_set[i].addr_bytes,
 812                                  EFX_MAC_ADDR_LEN);
 813                 mc_addrs += EFX_MAC_ADDR_LEN;
 814         }
 815
 816         rc = efx_mac_multicast_list_set(sa->nic, mc_addrs_p, nb_mc_addr);
 817
 818         rte_free(mc_addrs_p);
 819
 820         if (rc != 0)
 821                 sfc_err(sa, "cannot set multicast address list (rc = %u)", rc);
 822
 823         SFC_ASSERT(rc > 0);
 824         return -rc;
 825 }
 826
 827 static void
 828 sfc_rx_queue_info_get(struct rte_eth_dev *dev, uint16_t rx_queue_id,
 829                       struct rte_eth_rxq_info *qinfo)
 830 {
 831         struct sfc_adapter *sa = dev->data->dev_private;
 832         struct sfc_rxq_info *rxq_info;
 833         struct sfc_rxq *rxq;
 834
 835         sfc_adapter_lock(sa);
 836
 837         SFC_ASSERT(rx_queue_id < sa->rxq_count);
 838
 839         rxq_info = &sa->rxq_info[rx_queue_id];
 840         rxq = rxq_info->rxq;
 841         SFC_ASSERT(rxq != NULL);
 842
 843         qinfo->mp = rxq->refill_mb_pool;
 844         qinfo->conf.rx_free_thresh = rxq->refill_threshold;
 845         qinfo->conf.rx_drop_en = 1;
 846         qinfo->conf.rx_deferred_start = rxq_info->deferred_start;
 847         qinfo->scattered_rx = (rxq_info->type == EFX_RXQ_TYPE_SCATTER);
 848         qinfo->nb_desc = rxq_info->entries;
 849
 850         sfc_adapter_unlock(sa);
 851 }
 852
 853 static void
 854 sfc_tx_queue_info_get(struct rte_eth_dev *dev, uint16_t tx_queue_id,
 855                       struct rte_eth_txq_info *qinfo)
 856 {
 857         struct sfc_adapter *sa = dev->data->dev_private;
 858         struct sfc_txq_info *txq_info;
 859
 860         sfc_adapter_lock(sa);
 861
 862         SFC_ASSERT(tx_queue_id < sa->txq_count);
 863
 864         txq_info = &sa->txq_info[tx_queue_id];
 865         SFC_ASSERT(txq_info->txq != NULL);
 866
 867         memset(qinfo, 0, sizeof(*qinfo));
 868
 869         qinfo->conf.txq_flags = txq_info->txq->flags;
 870         qinfo->conf.tx_free_thresh = txq_info->txq->free_thresh;
 871         qinfo->conf.tx_deferred_start = txq_info->deferred_start;
 872         qinfo->nb_desc = txq_info->entries;
 873
 874         sfc_adapter_unlock(sa);
 875 }
 876
 877 static uint32_t
 878 sfc_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 879 {
 880         struct sfc_adapter *sa = dev->data->dev_private;
 881
 882         sfc_log_init(sa, "RxQ=%u", rx_queue_id);
 883
 884         return sfc_rx_qdesc_npending(sa, rx_queue_id);
 885 }
 886
 887 static int
 888 sfc_rx_descriptor_done(void *queue, uint16_t offset)
 889 {
 890         struct sfc_rxq *rxq = queue;
 891
 892         return sfc_rx_qdesc_done(rxq, offset);
 893 }
 894
 895 static int
 896 sfc_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 897 {
 898         struct sfc_adapter *sa = dev->data->dev_private;
 899         int rc;
 900
 901         sfc_log_init(sa, "RxQ=%u", rx_queue_id);
 902
 903         sfc_adapter_lock(sa);
 904
 905         rc = EINVAL;
 906         if (sa->state != SFC_ADAPTER_STARTED)
 907                 goto fail_not_started;
 908
 909         rc = sfc_rx_qstart(sa, rx_queue_id);
 910         if (rc != 0)
 911                 goto fail_rx_qstart;
 912
 913         sa->rxq_info[rx_queue_id].deferred_started = B_TRUE;
 914
 915         sfc_adapter_unlock(sa);
 916
 917         return 0;
 918
 919 fail_rx_qstart:
 920 fail_not_started:
 921         sfc_adapter_unlock(sa);
 922         SFC_ASSERT(rc > 0);
 923         return -rc;
 924 }
 925
 926 static int
 927 sfc_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 928 {
 929         struct sfc_adapter *sa = dev->data->dev_private;
 930
 931         sfc_log_init(sa, "RxQ=%u", rx_queue_id);
 932
 933         sfc_adapter_lock(sa);
 934         sfc_rx_qstop(sa, rx_queue_id);
 935
 936         sa->rxq_info[rx_queue_id].deferred_started = B_FALSE;
 937
 938         sfc_adapter_unlock(sa);
 939
 940         return 0;
 941 }
 942
 943 static int
 944 sfc_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
 945 {
 946         struct sfc_adapter *sa = dev->data->dev_private;
 947         int rc;
 948
 949         sfc_log_init(sa, "TxQ = %u", tx_queue_id);
 950
 951         sfc_adapter_lock(sa);
 952
 953         rc = EINVAL;
 954         if (sa->state != SFC_ADAPTER_STARTED)
 955                 goto fail_not_started;
 956
 957         rc = sfc_tx_qstart(sa, tx_queue_id);
 958         if (rc != 0)
 959                 goto fail_tx_qstart;
 960
 961         sa->txq_info[tx_queue_id].deferred_started = B_TRUE;
 962
 963         sfc_adapter_unlock(sa);
 964         return 0;
 965
 966 fail_tx_qstart:
 967
 968 fail_not_started:
 969         sfc_adapter_unlock(sa);
 970         SFC_ASSERT(rc > 0);
 971         return -rc;
 972 }
 973
 974 static int
 975 sfc_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
 976 {
 977         struct sfc_adapter *sa = dev->data->dev_private;
 978
 979         sfc_log_init(sa, "TxQ = %u", tx_queue_id);
 980
 981         sfc_adapter_lock(sa);
 982
 983         sfc_tx_qstop(sa, tx_queue_id);
 984
 985         sa->txq_info[tx_queue_id].deferred_started = B_FALSE;
 986
 987         sfc_adapter_unlock(sa);
 988         return 0;
 989 }
 990
 991 static const struct eth_dev_ops sfc_eth_dev_ops = {
 992         .dev_configure                  = sfc_dev_configure,
 993         .dev_start                      = sfc_dev_start,
 994         .dev_stop                       = sfc_dev_stop,
 995         .dev_set_link_up                = sfc_dev_set_link_up,
 996         .dev_set_link_down              = sfc_dev_set_link_down,
 997         .dev_close                      = sfc_dev_close,
 998         .promiscuous_enable             = sfc_dev_promisc_enable,
 999         .promiscuous_disable            = sfc_dev_promisc_disable,
1000         .allmulticast_enable            = sfc_dev_allmulti_enable,
1001         .allmulticast_disable           = sfc_dev_allmulti_disable,
1002         .link_update                    = sfc_dev_link_update,
1003         .stats_get                      = sfc_stats_get,
1004         .xstats_get                     = sfc_xstats_get,
1005         .xstats_get_names               = sfc_xstats_get_names,
1006         .dev_infos_get                  = sfc_dev_infos_get,
1007         .dev_supported_ptypes_get       = sfc_dev_supported_ptypes_get,
1008         .mtu_set                        = sfc_dev_set_mtu,
1009         .rx_queue_start                 = sfc_rx_queue_start,
1010         .rx_queue_stop                  = sfc_rx_queue_stop,
1011         .tx_queue_start                 = sfc_tx_queue_start,
1012         .tx_queue_stop                  = sfc_tx_queue_stop,
1013         .rx_queue_setup                 = sfc_rx_queue_setup,
1014         .rx_queue_release               = sfc_rx_queue_release,
1015         .rx_queue_count                 = sfc_rx_queue_count,
1016         .rx_descriptor_done             = sfc_rx_descriptor_done,
1017         .tx_queue_setup                 = sfc_tx_queue_setup,
1018         .tx_queue_release               = sfc_tx_queue_release,
1019         .flow_ctrl_get                  = sfc_flow_ctrl_get,
1020         .flow_ctrl_set                  = sfc_flow_ctrl_set,
1021         .mac_addr_set                   = sfc_mac_addr_set,
1022         .set_mc_addr_list               = sfc_set_mc_addr_list,
1023         .rxq_info_get                   = sfc_rx_queue_info_get,
1024         .txq_info_get                   = sfc_tx_queue_info_get,
1025 };
1026
1027 static int
1028 sfc_eth_dev_init(struct rte_eth_dev *dev)
1029 {
1030         struct sfc_adapter *sa = dev->data->dev_private;
1031         struct rte_pci_device *pci_dev = SFC_DEV_TO_PCI(dev);
1032         int rc;
1033         const efx_nic_cfg_t *encp;
1034         const struct ether_addr *from;
1035
1036         /* Required for logging */
1037         sa->eth_dev = dev;
1038
1039         /* Copy PCI device info to the dev->data */
1040         rte_eth_copy_pci_info(dev, pci_dev);
1041
1042         rc = sfc_kvargs_parse(sa);
1043         if (rc != 0)
1044                 goto fail_kvargs_parse;
1045
1046         rc = sfc_kvargs_process(sa, SFC_KVARG_DEBUG_INIT,
1047                                 sfc_kvarg_bool_handler, &sa->debug_init);
1048         if (rc != 0)
1049                 goto fail_kvarg_debug_init;
1050
1051         sfc_log_init(sa, "entry");
1052
1053         dev->data->mac_addrs = rte_zmalloc("sfc", ETHER_ADDR_LEN, 0);
1054         if (dev->data->mac_addrs == NULL) {
1055                 rc = ENOMEM;
1056                 goto fail_mac_addrs;
1057         }
1058
1059         sfc_adapter_lock_init(sa);
1060         sfc_adapter_lock(sa);
1061
1062         sfc_log_init(sa, "attaching");
1063         rc = sfc_attach(sa);
1064         if (rc != 0)
1065                 goto fail_attach;
1066
1067         encp = efx_nic_cfg_get(sa->nic);
1068
1069         /*
1070          * The arguments are really reverse order in comparison to
1071          * Linux kernel. Copy from NIC config to Ethernet device data.
1072          */
1073         from = (const struct ether_addr *)(encp->enc_mac_addr);
1074         ether_addr_copy(from, &dev->data->mac_addrs[0]);
1075
1076         dev->dev_ops = &sfc_eth_dev_ops;
1077         dev->rx_pkt_burst = &sfc_recv_pkts;
1078         dev->tx_pkt_burst = &sfc_xmit_pkts;
1079
1080         sfc_adapter_unlock(sa);
1081
1082         sfc_log_init(sa, "done");
1083         return 0;
1084
1085 fail_attach:
1086         sfc_adapter_unlock(sa);
1087         sfc_adapter_lock_fini(sa);
1088         rte_free(dev->data->mac_addrs);
1089         dev->data->mac_addrs = NULL;
1090
1091 fail_mac_addrs:
1092 fail_kvarg_debug_init:
1093         sfc_kvargs_cleanup(sa);
1094
1095 fail_kvargs_parse:
1096         sfc_log_init(sa, "failed %d", rc);
1097         SFC_ASSERT(rc > 0);
1098         return -rc;
1099 }
1100
1101 static int
1102 sfc_eth_dev_uninit(struct rte_eth_dev *dev)
1103 {
1104         struct sfc_adapter *sa = dev->data->dev_private;
1105
1106         sfc_log_init(sa, "entry");
1107
1108         sfc_adapter_lock(sa);
1109
1110         sfc_detach(sa);
1111
1112         rte_free(dev->data->mac_addrs);
1113         dev->data->mac_addrs = NULL;
1114
1115         dev->dev_ops = NULL;
1116         dev->rx_pkt_burst = NULL;
1117         dev->tx_pkt_burst = NULL;
1118
1119         sfc_kvargs_cleanup(sa);
1120
1121         sfc_adapter_unlock(sa);
1122         sfc_adapter_lock_fini(sa);
1123
1124         sfc_log_init(sa, "done");
1125
1126         /* Required for logging, so cleanup last */
1127         sa->eth_dev = NULL;
1128         return 0;
1129 }
1130
1131 static const struct rte_pci_id pci_id_sfc_efx_map[] = {
1132         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_FARMINGDALE) },
1133         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_GREENPORT) },
1134         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_MEDFORD) },
1135         { .vendor_id = 0 /* sentinel */ }
1136 };
1137
1138 static struct eth_driver sfc_efx_pmd = {
1139         .pci_drv = {
1140                 .id_table = pci_id_sfc_efx_map,
1141                 .drv_flags =
1142                         RTE_PCI_DRV_INTR_LSC |
1143                         RTE_PCI_DRV_NEED_MAPPING,
1144                 .probe = rte_eth_dev_pci_probe,
1145                 .remove = rte_eth_dev_pci_remove,
1146         },
1147         .eth_dev_init = sfc_eth_dev_init,
1148         .eth_dev_uninit = sfc_eth_dev_uninit,
1149         .dev_private_size = sizeof(struct sfc_adapter),
1150 };
1151
1152 RTE_PMD_REGISTER_PCI(net_sfc_efx, sfc_efx_pmd.pci_drv);
1153 RTE_PMD_REGISTER_PCI_TABLE(net_sfc_efx, pci_id_sfc_efx_map);
1154 RTE_PMD_REGISTER_PARAM_STRING(net_sfc_efx,
1155         SFC_KVARG_PERF_PROFILE "=" SFC_KVARG_VALUES_PERF_PROFILE " "
1156         SFC_KVARG_MCDI_LOGGING "=" SFC_KVARG_VALUES_BOOL " "
1157         SFC_KVARG_DEBUG_INIT "=" SFC_KVARG_VALUES_BOOL);