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         dev_info->max_rx_queues = sa->rxq_max;
  56         dev_info->max_tx_queues = sa->txq_max;
  57
  58         /* By default packets are dropped if no descriptors are available */
  59         dev_info->default_rxconf.rx_drop_en = 1;
  60
  61         dev_info->tx_offload_capa =
  62                 DEV_TX_OFFLOAD_IPV4_CKSUM |
  63                 DEV_TX_OFFLOAD_UDP_CKSUM |
  64                 DEV_TX_OFFLOAD_TCP_CKSUM;
  65
  66         dev_info->default_txconf.txq_flags = ETH_TXQ_FLAGS_NOVLANOFFL |
  67                                              ETH_TXQ_FLAGS_NOXSUMSCTP;
  68
  69         dev_info->rx_desc_lim.nb_max = EFX_RXQ_MAXNDESCS;
  70         dev_info->rx_desc_lim.nb_min = EFX_RXQ_MINNDESCS;
  71         /* The RXQ hardware requires that the descriptor count is a power
  72          * of 2, but rx_desc_lim cannot properly describe that constraint.
  73          */
  74         dev_info->rx_desc_lim.nb_align = EFX_RXQ_MINNDESCS;
  75
  76         dev_info->tx_desc_lim.nb_max = sa->txq_max_entries;
  77         dev_info->tx_desc_lim.nb_min = EFX_TXQ_MINNDESCS;
  78         /*
  79          * The TXQ hardware requires that the descriptor count is a power
  80          * of 2, but tx_desc_lim cannot properly describe that constraint
  81          */
  82         dev_info->tx_desc_lim.nb_align = EFX_TXQ_MINNDESCS;
  83 }
  84
  85 static int
  86 sfc_dev_configure(struct rte_eth_dev *dev)
  87 {
  88         struct rte_eth_dev_data *dev_data = dev->data;
  89         struct sfc_adapter *sa = dev_data->dev_private;
  90         int rc;
  91
  92         sfc_log_init(sa, "entry n_rxq=%u n_txq=%u",
  93                      dev_data->nb_rx_queues, dev_data->nb_tx_queues);
  94
  95         sfc_adapter_lock(sa);
  96         switch (sa->state) {
  97         case SFC_ADAPTER_CONFIGURED:
  98                 sfc_close(sa);
  99                 SFC_ASSERT(sa->state == SFC_ADAPTER_INITIALIZED);
 100                 /* FALLTHROUGH */
 101         case SFC_ADAPTER_INITIALIZED:
 102                 rc = sfc_configure(sa);
 103                 break;
 104         default:
 105                 sfc_err(sa, "unexpected adapter state %u to configure",
 106                         sa->state);
 107                 rc = EINVAL;
 108                 break;
 109         }
 110         sfc_adapter_unlock(sa);
 111
 112         sfc_log_init(sa, "done %d", rc);
 113         SFC_ASSERT(rc >= 0);
 114         return -rc;
 115 }
 116
 117 static int
 118 sfc_dev_start(struct rte_eth_dev *dev)
 119 {
 120         struct sfc_adapter *sa = dev->data->dev_private;
 121         int rc;
 122
 123         sfc_log_init(sa, "entry");
 124
 125         sfc_adapter_lock(sa);
 126         rc = sfc_start(sa);
 127         sfc_adapter_unlock(sa);
 128
 129         sfc_log_init(sa, "done %d", rc);
 130         SFC_ASSERT(rc >= 0);
 131         return -rc;
 132 }
 133
 134 static int
 135 sfc_dev_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 136 {
 137         struct sfc_adapter *sa = dev->data->dev_private;
 138         struct rte_eth_link *dev_link = &dev->data->dev_link;
 139         struct rte_eth_link old_link;
 140         struct rte_eth_link current_link;
 141
 142         sfc_log_init(sa, "entry");
 143
 144         if (sa->state != SFC_ADAPTER_STARTED)
 145                 return 0;
 146
 147 retry:
 148         EFX_STATIC_ASSERT(sizeof(*dev_link) == sizeof(rte_atomic64_t));
 149         *(int64_t *)&old_link = rte_atomic64_read((rte_atomic64_t *)dev_link);
 150
 151         if (wait_to_complete) {
 152                 efx_link_mode_t link_mode;
 153
 154                 efx_port_poll(sa->nic, &link_mode);
 155                 sfc_port_link_mode_to_info(link_mode, &current_link);
 156
 157                 if (!rte_atomic64_cmpset((volatile uint64_t *)dev_link,
 158                                          *(uint64_t *)&old_link,
 159                                          *(uint64_t *)&current_link))
 160                         goto retry;
 161         } else {
 162                 sfc_ev_mgmt_qpoll(sa);
 163                 *(int64_t *)&current_link =
 164                         rte_atomic64_read((rte_atomic64_t *)dev_link);
 165         }
 166
 167         if (old_link.link_status != current_link.link_status)
 168                 sfc_info(sa, "Link status is %s",
 169                          current_link.link_status ? "UP" : "DOWN");
 170
 171         return old_link.link_status == current_link.link_status ? 0 : -1;
 172 }
 173
 174 static void
 175 sfc_dev_stop(struct rte_eth_dev *dev)
 176 {
 177         struct sfc_adapter *sa = dev->data->dev_private;
 178
 179         sfc_log_init(sa, "entry");
 180
 181         sfc_adapter_lock(sa);
 182         sfc_stop(sa);
 183         sfc_adapter_unlock(sa);
 184
 185         sfc_log_init(sa, "done");
 186 }
 187
 188 static void
 189 sfc_dev_close(struct rte_eth_dev *dev)
 190 {
 191         struct sfc_adapter *sa = dev->data->dev_private;
 192
 193         sfc_log_init(sa, "entry");
 194
 195         sfc_adapter_lock(sa);
 196         switch (sa->state) {
 197         case SFC_ADAPTER_STARTED:
 198                 sfc_stop(sa);
 199                 SFC_ASSERT(sa->state == SFC_ADAPTER_CONFIGURED);
 200                 /* FALLTHROUGH */
 201         case SFC_ADAPTER_CONFIGURED:
 202                 sfc_close(sa);
 203                 SFC_ASSERT(sa->state == SFC_ADAPTER_INITIALIZED);
 204                 /* FALLTHROUGH */
 205         case SFC_ADAPTER_INITIALIZED:
 206                 break;
 207         default:
 208                 sfc_err(sa, "unexpected adapter state %u on close", sa->state);
 209                 break;
 210         }
 211         sfc_adapter_unlock(sa);
 212
 213         sfc_log_init(sa, "done");
 214 }
 215
 216 static int
 217 sfc_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id,
 218                    uint16_t nb_rx_desc, unsigned int socket_id,
 219                    const struct rte_eth_rxconf *rx_conf,
 220                    struct rte_mempool *mb_pool)
 221 {
 222         struct sfc_adapter *sa = dev->data->dev_private;
 223         int rc;
 224
 225         sfc_log_init(sa, "RxQ=%u nb_rx_desc=%u socket_id=%u",
 226                      rx_queue_id, nb_rx_desc, socket_id);
 227
 228         sfc_adapter_lock(sa);
 229
 230         rc = sfc_rx_qinit(sa, rx_queue_id, nb_rx_desc, socket_id,
 231                           rx_conf, mb_pool);
 232         if (rc != 0)
 233                 goto fail_rx_qinit;
 234
 235         dev->data->rx_queues[rx_queue_id] = sa->rxq_info[rx_queue_id].rxq;
 236
 237         sfc_adapter_unlock(sa);
 238
 239         return 0;
 240
 241 fail_rx_qinit:
 242         sfc_adapter_unlock(sa);
 243         SFC_ASSERT(rc > 0);
 244         return -rc;
 245 }
 246
 247 static void
 248 sfc_rx_queue_release(void *queue)
 249 {
 250         struct sfc_rxq *rxq = queue;
 251         struct sfc_adapter *sa;
 252         unsigned int sw_index;
 253
 254         if (rxq == NULL)
 255                 return;
 256
 257         sa = rxq->evq->sa;
 258         sfc_adapter_lock(sa);
 259
 260         sw_index = sfc_rxq_sw_index(rxq);
 261
 262         sfc_log_init(sa, "RxQ=%u", sw_index);
 263
 264         sa->eth_dev->data->rx_queues[sw_index] = NULL;
 265
 266         sfc_rx_qfini(sa, sw_index);
 267
 268         sfc_adapter_unlock(sa);
 269 }
 270
 271 static int
 272 sfc_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id,
 273                    uint16_t nb_tx_desc, unsigned int socket_id,
 274                    const struct rte_eth_txconf *tx_conf)
 275 {
 276         struct sfc_adapter *sa = dev->data->dev_private;
 277         int rc;
 278
 279         sfc_log_init(sa, "TxQ = %u, nb_tx_desc = %u, socket_id = %u",
 280                      tx_queue_id, nb_tx_desc, socket_id);
 281
 282         sfc_adapter_lock(sa);
 283
 284         rc = sfc_tx_qinit(sa, tx_queue_id, nb_tx_desc, socket_id, tx_conf);
 285         if (rc != 0)
 286                 goto fail_tx_qinit;
 287
 288         dev->data->tx_queues[tx_queue_id] = sa->txq_info[tx_queue_id].txq;
 289
 290         sfc_adapter_unlock(sa);
 291         return 0;
 292
 293 fail_tx_qinit:
 294         sfc_adapter_unlock(sa);
 295         SFC_ASSERT(rc > 0);
 296         return -rc;
 297 }
 298
 299 static void
 300 sfc_tx_queue_release(void *queue)
 301 {
 302         struct sfc_txq *txq = queue;
 303         unsigned int sw_index;
 304         struct sfc_adapter *sa;
 305
 306         if (txq == NULL)
 307                 return;
 308
 309         sw_index = sfc_txq_sw_index(txq);
 310
 311         SFC_ASSERT(txq->evq != NULL);
 312         sa = txq->evq->sa;
 313
 314         sfc_log_init(sa, "TxQ = %u", sw_index);
 315
 316         sfc_adapter_lock(sa);
 317
 318         SFC_ASSERT(sw_index < sa->eth_dev->data->nb_tx_queues);
 319         sa->eth_dev->data->tx_queues[sw_index] = NULL;
 320
 321         sfc_tx_qfini(sa, sw_index);
 322
 323         sfc_adapter_unlock(sa);
 324 }
 325
 326 static void
 327 sfc_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 328 {
 329         struct sfc_adapter *sa = dev->data->dev_private;
 330         struct sfc_port *port = &sa->port;
 331         uint64_t *mac_stats;
 332
 333         rte_spinlock_lock(&port->mac_stats_lock);
 334
 335         if (sfc_port_update_mac_stats(sa) != 0)
 336                 goto unlock;
 337
 338         mac_stats = port->mac_stats_buf;
 339
 340         if (EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask,
 341                                    EFX_MAC_VADAPTER_RX_UNICAST_PACKETS)) {
 342                 stats->ipackets =
 343                         mac_stats[EFX_MAC_VADAPTER_RX_UNICAST_PACKETS] +
 344                         mac_stats[EFX_MAC_VADAPTER_RX_MULTICAST_PACKETS] +
 345                         mac_stats[EFX_MAC_VADAPTER_RX_BROADCAST_PACKETS];
 346                 stats->opackets =
 347                         mac_stats[EFX_MAC_VADAPTER_TX_UNICAST_PACKETS] +
 348                         mac_stats[EFX_MAC_VADAPTER_TX_MULTICAST_PACKETS] +
 349                         mac_stats[EFX_MAC_VADAPTER_TX_BROADCAST_PACKETS];
 350                 stats->ibytes =
 351                         mac_stats[EFX_MAC_VADAPTER_RX_UNICAST_BYTES] +
 352                         mac_stats[EFX_MAC_VADAPTER_RX_MULTICAST_BYTES] +
 353                         mac_stats[EFX_MAC_VADAPTER_RX_BROADCAST_BYTES];
 354                 stats->obytes =
 355                         mac_stats[EFX_MAC_VADAPTER_TX_UNICAST_BYTES] +
 356                         mac_stats[EFX_MAC_VADAPTER_TX_MULTICAST_BYTES] +
 357                         mac_stats[EFX_MAC_VADAPTER_TX_BROADCAST_BYTES];
 358                 stats->imissed = mac_stats[EFX_MAC_VADAPTER_RX_OVERFLOW];
 359                 stats->ierrors = mac_stats[EFX_MAC_VADAPTER_RX_BAD_PACKETS];
 360                 stats->oerrors = mac_stats[EFX_MAC_VADAPTER_TX_BAD_PACKETS];
 361         } else {
 362                 stats->ipackets = mac_stats[EFX_MAC_RX_PKTS];
 363                 stats->opackets = mac_stats[EFX_MAC_TX_PKTS];
 364                 stats->ibytes = mac_stats[EFX_MAC_RX_OCTETS];
 365                 stats->obytes = mac_stats[EFX_MAC_TX_OCTETS];
 366                 /*
 367                  * Take into account stats which are whenever supported
 368                  * on EF10. If some stat is not supported by current
 369                  * firmware variant or HW revision, it is guaranteed
 370                  * to be zero in mac_stats.
 371                  */
 372                 stats->imissed =
 373                         mac_stats[EFX_MAC_RX_NODESC_DROP_CNT] +
 374                         mac_stats[EFX_MAC_PM_TRUNC_BB_OVERFLOW] +
 375                         mac_stats[EFX_MAC_PM_DISCARD_BB_OVERFLOW] +
 376                         mac_stats[EFX_MAC_PM_TRUNC_VFIFO_FULL] +
 377                         mac_stats[EFX_MAC_PM_DISCARD_VFIFO_FULL] +
 378                         mac_stats[EFX_MAC_PM_TRUNC_QBB] +
 379                         mac_stats[EFX_MAC_PM_DISCARD_QBB] +
 380                         mac_stats[EFX_MAC_PM_DISCARD_MAPPING] +
 381                         mac_stats[EFX_MAC_RXDP_Q_DISABLED_PKTS] +
 382                         mac_stats[EFX_MAC_RXDP_DI_DROPPED_PKTS];
 383                 stats->ierrors =
 384                         mac_stats[EFX_MAC_RX_FCS_ERRORS] +
 385                         mac_stats[EFX_MAC_RX_ALIGN_ERRORS] +
 386                         mac_stats[EFX_MAC_RX_JABBER_PKTS];
 387                 /* no oerrors counters supported on EF10 */
 388         }
 389
 390 unlock:
 391         rte_spinlock_unlock(&port->mac_stats_lock);
 392 }
 393
 394 static int
 395 sfc_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
 396                unsigned int xstats_count)
 397 {
 398         struct sfc_adapter *sa = dev->data->dev_private;
 399         struct sfc_port *port = &sa->port;
 400         uint64_t *mac_stats;
 401         int rc;
 402         unsigned int i;
 403         int nstats = 0;
 404
 405         rte_spinlock_lock(&port->mac_stats_lock);
 406
 407         rc = sfc_port_update_mac_stats(sa);
 408         if (rc != 0) {
 409                 SFC_ASSERT(rc > 0);
 410                 nstats = -rc;
 411                 goto unlock;
 412         }
 413
 414         mac_stats = port->mac_stats_buf;
 415
 416         for (i = 0; i < EFX_MAC_NSTATS; ++i) {
 417                 if (EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask, i)) {
 418                         if (xstats != NULL && nstats < (int)xstats_count) {
 419                                 xstats[nstats].id = nstats;
 420                                 xstats[nstats].value = mac_stats[i];
 421                         }
 422                         nstats++;
 423                 }
 424         }
 425
 426 unlock:
 427         rte_spinlock_unlock(&port->mac_stats_lock);
 428
 429         return nstats;
 430 }
 431
 432 static int
 433 sfc_xstats_get_names(struct rte_eth_dev *dev,
 434                      struct rte_eth_xstat_name *xstats_names,
 435                      unsigned int xstats_count)
 436 {
 437         struct sfc_adapter *sa = dev->data->dev_private;
 438         struct sfc_port *port = &sa->port;
 439         unsigned int i;
 440         unsigned int nstats = 0;
 441
 442         for (i = 0; i < EFX_MAC_NSTATS; ++i) {
 443                 if (EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask, i)) {
 444                         if (xstats_names != NULL && nstats < xstats_count)
 445                                 strncpy(xstats_names[nstats].name,
 446                                         efx_mac_stat_name(sa->nic, i),
 447                                         sizeof(xstats_names[0].name));
 448                         nstats++;
 449                 }
 450         }
 451
 452         return nstats;
 453 }
 454
 455 static int
 456 sfc_flow_ctrl_get(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 457 {
 458         struct sfc_adapter *sa = dev->data->dev_private;
 459         unsigned int wanted_fc, link_fc;
 460
 461         memset(fc_conf, 0, sizeof(*fc_conf));
 462
 463         sfc_adapter_lock(sa);
 464
 465         if (sa->state == SFC_ADAPTER_STARTED)
 466                 efx_mac_fcntl_get(sa->nic, &wanted_fc, &link_fc);
 467         else
 468                 link_fc = sa->port.flow_ctrl;
 469
 470         switch (link_fc) {
 471         case 0:
 472                 fc_conf->mode = RTE_FC_NONE;
 473                 break;
 474         case EFX_FCNTL_RESPOND:
 475                 fc_conf->mode = RTE_FC_RX_PAUSE;
 476                 break;
 477         case EFX_FCNTL_GENERATE:
 478                 fc_conf->mode = RTE_FC_TX_PAUSE;
 479                 break;
 480         case (EFX_FCNTL_RESPOND | EFX_FCNTL_GENERATE):
 481                 fc_conf->mode = RTE_FC_FULL;
 482                 break;
 483         default:
 484                 sfc_err(sa, "%s: unexpected flow control value %#x",
 485                         __func__, link_fc);
 486         }
 487
 488         fc_conf->autoneg = sa->port.flow_ctrl_autoneg;
 489
 490         sfc_adapter_unlock(sa);
 491
 492         return 0;
 493 }
 494
 495 static int
 496 sfc_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 497 {
 498         struct sfc_adapter *sa = dev->data->dev_private;
 499         struct sfc_port *port = &sa->port;
 500         unsigned int fcntl;
 501         int rc;
 502
 503         if (fc_conf->high_water != 0 || fc_conf->low_water != 0 ||
 504             fc_conf->pause_time != 0 || fc_conf->send_xon != 0 ||
 505             fc_conf->mac_ctrl_frame_fwd != 0) {
 506                 sfc_err(sa, "unsupported flow control settings specified");
 507                 rc = EINVAL;
 508                 goto fail_inval;
 509         }
 510
 511         switch (fc_conf->mode) {
 512         case RTE_FC_NONE:
 513                 fcntl = 0;
 514                 break;
 515         case RTE_FC_RX_PAUSE:
 516                 fcntl = EFX_FCNTL_RESPOND;
 517                 break;
 518         case RTE_FC_TX_PAUSE:
 519                 fcntl = EFX_FCNTL_GENERATE;
 520                 break;
 521         case RTE_FC_FULL:
 522                 fcntl = EFX_FCNTL_RESPOND | EFX_FCNTL_GENERATE;
 523                 break;
 524         default:
 525                 rc = EINVAL;
 526                 goto fail_inval;
 527         }
 528
 529         sfc_adapter_lock(sa);
 530
 531         if (sa->state == SFC_ADAPTER_STARTED) {
 532                 rc = efx_mac_fcntl_set(sa->nic, fcntl, fc_conf->autoneg);
 533                 if (rc != 0)
 534                         goto fail_mac_fcntl_set;
 535         }
 536
 537         port->flow_ctrl = fcntl;
 538         port->flow_ctrl_autoneg = fc_conf->autoneg;
 539
 540         sfc_adapter_unlock(sa);
 541
 542         return 0;
 543
 544 fail_mac_fcntl_set:
 545         sfc_adapter_unlock(sa);
 546 fail_inval:
 547         SFC_ASSERT(rc > 0);
 548         return -rc;
 549 }
 550
 551 static int
 552 sfc_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 553 {
 554         struct sfc_adapter *sa = dev->data->dev_private;
 555         size_t pdu = EFX_MAC_PDU(mtu);
 556         size_t old_pdu;
 557         int rc;
 558
 559         sfc_log_init(sa, "mtu=%u", mtu);
 560
 561         rc = EINVAL;
 562         if (pdu < EFX_MAC_PDU_MIN) {
 563                 sfc_err(sa, "too small MTU %u (PDU size %u less than min %u)",
 564                         (unsigned int)mtu, (unsigned int)pdu,
 565                         EFX_MAC_PDU_MIN);
 566                 goto fail_inval;
 567         }
 568         if (pdu > EFX_MAC_PDU_MAX) {
 569                 sfc_err(sa, "too big MTU %u (PDU size %u greater than max %u)",
 570                         (unsigned int)mtu, (unsigned int)pdu,
 571                         EFX_MAC_PDU_MAX);
 572                 goto fail_inval;
 573         }
 574
 575         sfc_adapter_lock(sa);
 576
 577         if (pdu != sa->port.pdu) {
 578                 if (sa->state == SFC_ADAPTER_STARTED) {
 579                         sfc_stop(sa);
 580
 581                         old_pdu = sa->port.pdu;
 582                         sa->port.pdu = pdu;
 583                         rc = sfc_start(sa);
 584                         if (rc != 0)
 585                                 goto fail_start;
 586                 } else {
 587                         sa->port.pdu = pdu;
 588                 }
 589         }
 590
 591         /*
 592          * The driver does not use it, but other PMDs update jumbo_frame
 593          * flag and max_rx_pkt_len when MTU is set.
 594          */
 595         dev->data->dev_conf.rxmode.jumbo_frame = (mtu > ETHER_MAX_LEN);
 596         dev->data->dev_conf.rxmode.max_rx_pkt_len = sa->port.pdu;
 597
 598         sfc_adapter_unlock(sa);
 599
 600         sfc_log_init(sa, "done");
 601         return 0;
 602
 603 fail_start:
 604         sa->port.pdu = old_pdu;
 605         if (sfc_start(sa) != 0)
 606                 sfc_err(sa, "cannot start with neither new (%u) nor old (%u) "
 607                         "PDU max size - port is stopped",
 608                         (unsigned int)pdu, (unsigned int)old_pdu);
 609         sfc_adapter_unlock(sa);
 610
 611 fail_inval:
 612         sfc_log_init(sa, "failed %d", rc);
 613         SFC_ASSERT(rc > 0);
 614         return -rc;
 615 }
 616
 617 static const struct eth_dev_ops sfc_eth_dev_ops = {
 618         .dev_configure                  = sfc_dev_configure,
 619         .dev_start                      = sfc_dev_start,
 620         .dev_stop                       = sfc_dev_stop,
 621         .dev_close                      = sfc_dev_close,
 622         .link_update                    = sfc_dev_link_update,
 623         .stats_get                      = sfc_stats_get,
 624         .xstats_get                     = sfc_xstats_get,
 625         .xstats_get_names               = sfc_xstats_get_names,
 626         .dev_infos_get                  = sfc_dev_infos_get,
 627         .mtu_set                        = sfc_dev_set_mtu,
 628         .rx_queue_setup                 = sfc_rx_queue_setup,
 629         .rx_queue_release               = sfc_rx_queue_release,
 630         .tx_queue_setup                 = sfc_tx_queue_setup,
 631         .tx_queue_release               = sfc_tx_queue_release,
 632         .flow_ctrl_get                  = sfc_flow_ctrl_get,
 633         .flow_ctrl_set                  = sfc_flow_ctrl_set,
 634 };
 635
 636 static int
 637 sfc_eth_dev_init(struct rte_eth_dev *dev)
 638 {
 639         struct sfc_adapter *sa = dev->data->dev_private;
 640         struct rte_pci_device *pci_dev = SFC_DEV_TO_PCI(dev);
 641         int rc;
 642         const efx_nic_cfg_t *encp;
 643         const struct ether_addr *from;
 644
 645         /* Required for logging */
 646         sa->eth_dev = dev;
 647
 648         /* Copy PCI device info to the dev->data */
 649         rte_eth_copy_pci_info(dev, pci_dev);
 650
 651         rc = sfc_kvargs_parse(sa);
 652         if (rc != 0)
 653                 goto fail_kvargs_parse;
 654
 655         rc = sfc_kvargs_process(sa, SFC_KVARG_DEBUG_INIT,
 656                                 sfc_kvarg_bool_handler, &sa->debug_init);
 657         if (rc != 0)
 658                 goto fail_kvarg_debug_init;
 659
 660         sfc_log_init(sa, "entry");
 661
 662         dev->data->mac_addrs = rte_zmalloc("sfc", ETHER_ADDR_LEN, 0);
 663         if (dev->data->mac_addrs == NULL) {
 664                 rc = ENOMEM;
 665                 goto fail_mac_addrs;
 666         }
 667
 668         sfc_adapter_lock_init(sa);
 669         sfc_adapter_lock(sa);
 670
 671         sfc_log_init(sa, "attaching");
 672         rc = sfc_attach(sa);
 673         if (rc != 0)
 674                 goto fail_attach;
 675
 676         encp = efx_nic_cfg_get(sa->nic);
 677
 678         /*
 679          * The arguments are really reverse order in comparison to
 680          * Linux kernel. Copy from NIC config to Ethernet device data.
 681          */
 682         from = (const struct ether_addr *)(encp->enc_mac_addr);
 683         ether_addr_copy(from, &dev->data->mac_addrs[0]);
 684
 685         dev->dev_ops = &sfc_eth_dev_ops;
 686         dev->rx_pkt_burst = &sfc_recv_pkts;
 687         dev->tx_pkt_burst = &sfc_xmit_pkts;
 688
 689         sfc_adapter_unlock(sa);
 690
 691         sfc_log_init(sa, "done");
 692         return 0;
 693
 694 fail_attach:
 695         sfc_adapter_unlock(sa);
 696         sfc_adapter_lock_fini(sa);
 697         rte_free(dev->data->mac_addrs);
 698         dev->data->mac_addrs = NULL;
 699
 700 fail_mac_addrs:
 701 fail_kvarg_debug_init:
 702         sfc_kvargs_cleanup(sa);
 703
 704 fail_kvargs_parse:
 705         sfc_log_init(sa, "failed %d", rc);
 706         SFC_ASSERT(rc > 0);
 707         return -rc;
 708 }
 709
 710 static int
 711 sfc_eth_dev_uninit(struct rte_eth_dev *dev)
 712 {
 713         struct sfc_adapter *sa = dev->data->dev_private;
 714
 715         sfc_log_init(sa, "entry");
 716
 717         sfc_adapter_lock(sa);
 718
 719         sfc_detach(sa);
 720
 721         rte_free(dev->data->mac_addrs);
 722         dev->data->mac_addrs = NULL;
 723
 724         dev->dev_ops = NULL;
 725         dev->rx_pkt_burst = NULL;
 726         dev->tx_pkt_burst = NULL;
 727
 728         sfc_kvargs_cleanup(sa);
 729
 730         sfc_adapter_unlock(sa);
 731         sfc_adapter_lock_fini(sa);
 732
 733         sfc_log_init(sa, "done");
 734
 735         /* Required for logging, so cleanup last */
 736         sa->eth_dev = NULL;
 737         return 0;
 738 }
 739
 740 static const struct rte_pci_id pci_id_sfc_efx_map[] = {
 741         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_FARMINGDALE) },
 742         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_GREENPORT) },
 743         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_MEDFORD) },
 744         { .vendor_id = 0 /* sentinel */ }
 745 };
 746
 747 static struct eth_driver sfc_efx_pmd = {
 748         .pci_drv = {
 749                 .id_table = pci_id_sfc_efx_map,
 750                 .drv_flags =
 751                         RTE_PCI_DRV_INTR_LSC |
 752                         RTE_PCI_DRV_NEED_MAPPING,
 753                 .probe = rte_eth_dev_pci_probe,
 754                 .remove = rte_eth_dev_pci_remove,
 755         },
 756         .eth_dev_init = sfc_eth_dev_init,
 757         .eth_dev_uninit = sfc_eth_dev_uninit,
 758         .dev_private_size = sizeof(struct sfc_adapter),
 759 };
 760
 761 RTE_PMD_REGISTER_PCI(net_sfc_efx, sfc_efx_pmd.pci_drv);
 762 RTE_PMD_REGISTER_PCI_TABLE(net_sfc_efx, pci_id_sfc_efx_map);
 763 RTE_PMD_REGISTER_PARAM_STRING(net_sfc_efx,
 764         SFC_KVARG_PERF_PROFILE "=" SFC_KVARG_VALUES_PERF_PROFILE " "
 765         SFC_KVARG_MCDI_LOGGING "=" SFC_KVARG_VALUES_BOOL " "
 766         SFC_KVARG_DEBUG_INIT "=" SFC_KVARG_VALUES_BOOL);