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