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->tx_offload_capa =
  71                 DEV_TX_OFFLOAD_IPV4_CKSUM |
  72                 DEV_TX_OFFLOAD_UDP_CKSUM |
  73                 DEV_TX_OFFLOAD_TCP_CKSUM;
  74
  75         dev_info->default_txconf.txq_flags = ETH_TXQ_FLAGS_NOVLANOFFL |
  76                                              ETH_TXQ_FLAGS_NOXSUMSCTP;
  77
  78         dev_info->rx_desc_lim.nb_max = EFX_RXQ_MAXNDESCS;
  79         dev_info->rx_desc_lim.nb_min = EFX_RXQ_MINNDESCS;
  80         /* The RXQ hardware requires that the descriptor count is a power
  81          * of 2, but rx_desc_lim cannot properly describe that constraint.
  82          */
  83         dev_info->rx_desc_lim.nb_align = EFX_RXQ_MINNDESCS;
  84
  85         dev_info->tx_desc_lim.nb_max = sa->txq_max_entries;
  86         dev_info->tx_desc_lim.nb_min = EFX_TXQ_MINNDESCS;
  87         /*
  88          * The TXQ hardware requires that the descriptor count is a power
  89          * of 2, but tx_desc_lim cannot properly describe that constraint
  90          */
  91         dev_info->tx_desc_lim.nb_align = EFX_TXQ_MINNDESCS;
  92 }
  93
  94 static int
  95 sfc_dev_configure(struct rte_eth_dev *dev)
  96 {
  97         struct rte_eth_dev_data *dev_data = dev->data;
  98         struct sfc_adapter *sa = dev_data->dev_private;
  99         int rc;
 100
 101         sfc_log_init(sa, "entry n_rxq=%u n_txq=%u",
 102                      dev_data->nb_rx_queues, dev_data->nb_tx_queues);
 103
 104         sfc_adapter_lock(sa);
 105         switch (sa->state) {
 106         case SFC_ADAPTER_CONFIGURED:
 107                 sfc_close(sa);
 108                 SFC_ASSERT(sa->state == SFC_ADAPTER_INITIALIZED);
 109                 /* FALLTHROUGH */
 110         case SFC_ADAPTER_INITIALIZED:
 111                 rc = sfc_configure(sa);
 112                 break;
 113         default:
 114                 sfc_err(sa, "unexpected adapter state %u to configure",
 115                         sa->state);
 116                 rc = EINVAL;
 117                 break;
 118         }
 119         sfc_adapter_unlock(sa);
 120
 121         sfc_log_init(sa, "done %d", rc);
 122         SFC_ASSERT(rc >= 0);
 123         return -rc;
 124 }
 125
 126 static int
 127 sfc_dev_start(struct rte_eth_dev *dev)
 128 {
 129         struct sfc_adapter *sa = dev->data->dev_private;
 130         int rc;
 131
 132         sfc_log_init(sa, "entry");
 133
 134         sfc_adapter_lock(sa);
 135         rc = sfc_start(sa);
 136         sfc_adapter_unlock(sa);
 137
 138         sfc_log_init(sa, "done %d", rc);
 139         SFC_ASSERT(rc >= 0);
 140         return -rc;
 141 }
 142
 143 static int
 144 sfc_dev_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 145 {
 146         struct sfc_adapter *sa = dev->data->dev_private;
 147         struct rte_eth_link *dev_link = &dev->data->dev_link;
 148         struct rte_eth_link old_link;
 149         struct rte_eth_link current_link;
 150
 151         sfc_log_init(sa, "entry");
 152
 153         if (sa->state != SFC_ADAPTER_STARTED)
 154                 return 0;
 155
 156 retry:
 157         EFX_STATIC_ASSERT(sizeof(*dev_link) == sizeof(rte_atomic64_t));
 158         *(int64_t *)&old_link = rte_atomic64_read((rte_atomic64_t *)dev_link);
 159
 160         if (wait_to_complete) {
 161                 efx_link_mode_t link_mode;
 162
 163                 efx_port_poll(sa->nic, &link_mode);
 164                 sfc_port_link_mode_to_info(link_mode, &current_link);
 165
 166                 if (!rte_atomic64_cmpset((volatile uint64_t *)dev_link,
 167                                          *(uint64_t *)&old_link,
 168                                          *(uint64_t *)&current_link))
 169                         goto retry;
 170         } else {
 171                 sfc_ev_mgmt_qpoll(sa);
 172                 *(int64_t *)&current_link =
 173                         rte_atomic64_read((rte_atomic64_t *)dev_link);
 174         }
 175
 176         if (old_link.link_status != current_link.link_status)
 177                 sfc_info(sa, "Link status is %s",
 178                          current_link.link_status ? "UP" : "DOWN");
 179
 180         return old_link.link_status == current_link.link_status ? 0 : -1;
 181 }
 182
 183 static void
 184 sfc_dev_stop(struct rte_eth_dev *dev)
 185 {
 186         struct sfc_adapter *sa = dev->data->dev_private;
 187
 188         sfc_log_init(sa, "entry");
 189
 190         sfc_adapter_lock(sa);
 191         sfc_stop(sa);
 192         sfc_adapter_unlock(sa);
 193
 194         sfc_log_init(sa, "done");
 195 }
 196
 197 static void
 198 sfc_dev_close(struct rte_eth_dev *dev)
 199 {
 200         struct sfc_adapter *sa = dev->data->dev_private;
 201
 202         sfc_log_init(sa, "entry");
 203
 204         sfc_adapter_lock(sa);
 205         switch (sa->state) {
 206         case SFC_ADAPTER_STARTED:
 207                 sfc_stop(sa);
 208                 SFC_ASSERT(sa->state == SFC_ADAPTER_CONFIGURED);
 209                 /* FALLTHROUGH */
 210         case SFC_ADAPTER_CONFIGURED:
 211                 sfc_close(sa);
 212                 SFC_ASSERT(sa->state == SFC_ADAPTER_INITIALIZED);
 213                 /* FALLTHROUGH */
 214         case SFC_ADAPTER_INITIALIZED:
 215                 break;
 216         default:
 217                 sfc_err(sa, "unexpected adapter state %u on close", sa->state);
 218                 break;
 219         }
 220         sfc_adapter_unlock(sa);
 221
 222         sfc_log_init(sa, "done");
 223 }
 224
 225 static int
 226 sfc_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id,
 227                    uint16_t nb_rx_desc, unsigned int socket_id,
 228                    const struct rte_eth_rxconf *rx_conf,
 229                    struct rte_mempool *mb_pool)
 230 {
 231         struct sfc_adapter *sa = dev->data->dev_private;
 232         int rc;
 233
 234         sfc_log_init(sa, "RxQ=%u nb_rx_desc=%u socket_id=%u",
 235                      rx_queue_id, nb_rx_desc, socket_id);
 236
 237         sfc_adapter_lock(sa);
 238
 239         rc = sfc_rx_qinit(sa, rx_queue_id, nb_rx_desc, socket_id,
 240                           rx_conf, mb_pool);
 241         if (rc != 0)
 242                 goto fail_rx_qinit;
 243
 244         dev->data->rx_queues[rx_queue_id] = sa->rxq_info[rx_queue_id].rxq;
 245
 246         sfc_adapter_unlock(sa);
 247
 248         return 0;
 249
 250 fail_rx_qinit:
 251         sfc_adapter_unlock(sa);
 252         SFC_ASSERT(rc > 0);
 253         return -rc;
 254 }
 255
 256 static void
 257 sfc_rx_queue_release(void *queue)
 258 {
 259         struct sfc_rxq *rxq = queue;
 260         struct sfc_adapter *sa;
 261         unsigned int sw_index;
 262
 263         if (rxq == NULL)
 264                 return;
 265
 266         sa = rxq->evq->sa;
 267         sfc_adapter_lock(sa);
 268
 269         sw_index = sfc_rxq_sw_index(rxq);
 270
 271         sfc_log_init(sa, "RxQ=%u", sw_index);
 272
 273         sa->eth_dev->data->rx_queues[sw_index] = NULL;
 274
 275         sfc_rx_qfini(sa, sw_index);
 276
 277         sfc_adapter_unlock(sa);
 278 }
 279
 280 static int
 281 sfc_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id,
 282                    uint16_t nb_tx_desc, unsigned int socket_id,
 283                    const struct rte_eth_txconf *tx_conf)
 284 {
 285         struct sfc_adapter *sa = dev->data->dev_private;
 286         int rc;
 287
 288         sfc_log_init(sa, "TxQ = %u, nb_tx_desc = %u, socket_id = %u",
 289                      tx_queue_id, nb_tx_desc, socket_id);
 290
 291         sfc_adapter_lock(sa);
 292
 293         rc = sfc_tx_qinit(sa, tx_queue_id, nb_tx_desc, socket_id, tx_conf);
 294         if (rc != 0)
 295                 goto fail_tx_qinit;
 296
 297         dev->data->tx_queues[tx_queue_id] = sa->txq_info[tx_queue_id].txq;
 298
 299         sfc_adapter_unlock(sa);
 300         return 0;
 301
 302 fail_tx_qinit:
 303         sfc_adapter_unlock(sa);
 304         SFC_ASSERT(rc > 0);
 305         return -rc;
 306 }
 307
 308 static void
 309 sfc_tx_queue_release(void *queue)
 310 {
 311         struct sfc_txq *txq = queue;
 312         unsigned int sw_index;
 313         struct sfc_adapter *sa;
 314
 315         if (txq == NULL)
 316                 return;
 317
 318         sw_index = sfc_txq_sw_index(txq);
 319
 320         SFC_ASSERT(txq->evq != NULL);
 321         sa = txq->evq->sa;
 322
 323         sfc_log_init(sa, "TxQ = %u", sw_index);
 324
 325         sfc_adapter_lock(sa);
 326
 327         SFC_ASSERT(sw_index < sa->eth_dev->data->nb_tx_queues);
 328         sa->eth_dev->data->tx_queues[sw_index] = NULL;
 329
 330         sfc_tx_qfini(sa, sw_index);
 331
 332         sfc_adapter_unlock(sa);
 333 }
 334
 335 static void
 336 sfc_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
 337 {
 338         struct sfc_adapter *sa = dev->data->dev_private;
 339         struct sfc_port *port = &sa->port;
 340         uint64_t *mac_stats;
 341
 342         rte_spinlock_lock(&port->mac_stats_lock);
 343
 344         if (sfc_port_update_mac_stats(sa) != 0)
 345                 goto unlock;
 346
 347         mac_stats = port->mac_stats_buf;
 348
 349         if (EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask,
 350                                    EFX_MAC_VADAPTER_RX_UNICAST_PACKETS)) {
 351                 stats->ipackets =
 352                         mac_stats[EFX_MAC_VADAPTER_RX_UNICAST_PACKETS] +
 353                         mac_stats[EFX_MAC_VADAPTER_RX_MULTICAST_PACKETS] +
 354                         mac_stats[EFX_MAC_VADAPTER_RX_BROADCAST_PACKETS];
 355                 stats->opackets =
 356                         mac_stats[EFX_MAC_VADAPTER_TX_UNICAST_PACKETS] +
 357                         mac_stats[EFX_MAC_VADAPTER_TX_MULTICAST_PACKETS] +
 358                         mac_stats[EFX_MAC_VADAPTER_TX_BROADCAST_PACKETS];
 359                 stats->ibytes =
 360                         mac_stats[EFX_MAC_VADAPTER_RX_UNICAST_BYTES] +
 361                         mac_stats[EFX_MAC_VADAPTER_RX_MULTICAST_BYTES] +
 362                         mac_stats[EFX_MAC_VADAPTER_RX_BROADCAST_BYTES];
 363                 stats->obytes =
 364                         mac_stats[EFX_MAC_VADAPTER_TX_UNICAST_BYTES] +
 365                         mac_stats[EFX_MAC_VADAPTER_TX_MULTICAST_BYTES] +
 366                         mac_stats[EFX_MAC_VADAPTER_TX_BROADCAST_BYTES];
 367                 stats->imissed = mac_stats[EFX_MAC_VADAPTER_RX_OVERFLOW];
 368                 stats->ierrors = mac_stats[EFX_MAC_VADAPTER_RX_BAD_PACKETS];
 369                 stats->oerrors = mac_stats[EFX_MAC_VADAPTER_TX_BAD_PACKETS];
 370         } else {
 371                 stats->ipackets = mac_stats[EFX_MAC_RX_PKTS];
 372                 stats->opackets = mac_stats[EFX_MAC_TX_PKTS];
 373                 stats->ibytes = mac_stats[EFX_MAC_RX_OCTETS];
 374                 stats->obytes = mac_stats[EFX_MAC_TX_OCTETS];
 375                 /*
 376                  * Take into account stats which are whenever supported
 377                  * on EF10. If some stat is not supported by current
 378                  * firmware variant or HW revision, it is guaranteed
 379                  * to be zero in mac_stats.
 380                  */
 381                 stats->imissed =
 382                         mac_stats[EFX_MAC_RX_NODESC_DROP_CNT] +
 383                         mac_stats[EFX_MAC_PM_TRUNC_BB_OVERFLOW] +
 384                         mac_stats[EFX_MAC_PM_DISCARD_BB_OVERFLOW] +
 385                         mac_stats[EFX_MAC_PM_TRUNC_VFIFO_FULL] +
 386                         mac_stats[EFX_MAC_PM_DISCARD_VFIFO_FULL] +
 387                         mac_stats[EFX_MAC_PM_TRUNC_QBB] +
 388                         mac_stats[EFX_MAC_PM_DISCARD_QBB] +
 389                         mac_stats[EFX_MAC_PM_DISCARD_MAPPING] +
 390                         mac_stats[EFX_MAC_RXDP_Q_DISABLED_PKTS] +
 391                         mac_stats[EFX_MAC_RXDP_DI_DROPPED_PKTS];
 392                 stats->ierrors =
 393                         mac_stats[EFX_MAC_RX_FCS_ERRORS] +
 394                         mac_stats[EFX_MAC_RX_ALIGN_ERRORS] +
 395                         mac_stats[EFX_MAC_RX_JABBER_PKTS];
 396                 /* no oerrors counters supported on EF10 */
 397         }
 398
 399 unlock:
 400         rte_spinlock_unlock(&port->mac_stats_lock);
 401 }
 402
 403 static int
 404 sfc_xstats_get(struct rte_eth_dev *dev, struct rte_eth_xstat *xstats,
 405                unsigned int xstats_count)
 406 {
 407         struct sfc_adapter *sa = dev->data->dev_private;
 408         struct sfc_port *port = &sa->port;
 409         uint64_t *mac_stats;
 410         int rc;
 411         unsigned int i;
 412         int nstats = 0;
 413
 414         rte_spinlock_lock(&port->mac_stats_lock);
 415
 416         rc = sfc_port_update_mac_stats(sa);
 417         if (rc != 0) {
 418                 SFC_ASSERT(rc > 0);
 419                 nstats = -rc;
 420                 goto unlock;
 421         }
 422
 423         mac_stats = port->mac_stats_buf;
 424
 425         for (i = 0; i < EFX_MAC_NSTATS; ++i) {
 426                 if (EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask, i)) {
 427                         if (xstats != NULL && nstats < (int)xstats_count) {
 428                                 xstats[nstats].id = nstats;
 429                                 xstats[nstats].value = mac_stats[i];
 430                         }
 431                         nstats++;
 432                 }
 433         }
 434
 435 unlock:
 436         rte_spinlock_unlock(&port->mac_stats_lock);
 437
 438         return nstats;
 439 }
 440
 441 static int
 442 sfc_xstats_get_names(struct rte_eth_dev *dev,
 443                      struct rte_eth_xstat_name *xstats_names,
 444                      unsigned int xstats_count)
 445 {
 446         struct sfc_adapter *sa = dev->data->dev_private;
 447         struct sfc_port *port = &sa->port;
 448         unsigned int i;
 449         unsigned int nstats = 0;
 450
 451         for (i = 0; i < EFX_MAC_NSTATS; ++i) {
 452                 if (EFX_MAC_STAT_SUPPORTED(port->mac_stats_mask, i)) {
 453                         if (xstats_names != NULL && nstats < xstats_count)
 454                                 strncpy(xstats_names[nstats].name,
 455                                         efx_mac_stat_name(sa->nic, i),
 456                                         sizeof(xstats_names[0].name));
 457                         nstats++;
 458                 }
 459         }
 460
 461         return nstats;
 462 }
 463
 464 static int
 465 sfc_flow_ctrl_get(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 466 {
 467         struct sfc_adapter *sa = dev->data->dev_private;
 468         unsigned int wanted_fc, link_fc;
 469
 470         memset(fc_conf, 0, sizeof(*fc_conf));
 471
 472         sfc_adapter_lock(sa);
 473
 474         if (sa->state == SFC_ADAPTER_STARTED)
 475                 efx_mac_fcntl_get(sa->nic, &wanted_fc, &link_fc);
 476         else
 477                 link_fc = sa->port.flow_ctrl;
 478
 479         switch (link_fc) {
 480         case 0:
 481                 fc_conf->mode = RTE_FC_NONE;
 482                 break;
 483         case EFX_FCNTL_RESPOND:
 484                 fc_conf->mode = RTE_FC_RX_PAUSE;
 485                 break;
 486         case EFX_FCNTL_GENERATE:
 487                 fc_conf->mode = RTE_FC_TX_PAUSE;
 488                 break;
 489         case (EFX_FCNTL_RESPOND | EFX_FCNTL_GENERATE):
 490                 fc_conf->mode = RTE_FC_FULL;
 491                 break;
 492         default:
 493                 sfc_err(sa, "%s: unexpected flow control value %#x",
 494                         __func__, link_fc);
 495         }
 496
 497         fc_conf->autoneg = sa->port.flow_ctrl_autoneg;
 498
 499         sfc_adapter_unlock(sa);
 500
 501         return 0;
 502 }
 503
 504 static int
 505 sfc_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 506 {
 507         struct sfc_adapter *sa = dev->data->dev_private;
 508         struct sfc_port *port = &sa->port;
 509         unsigned int fcntl;
 510         int rc;
 511
 512         if (fc_conf->high_water != 0 || fc_conf->low_water != 0 ||
 513             fc_conf->pause_time != 0 || fc_conf->send_xon != 0 ||
 514             fc_conf->mac_ctrl_frame_fwd != 0) {
 515                 sfc_err(sa, "unsupported flow control settings specified");
 516                 rc = EINVAL;
 517                 goto fail_inval;
 518         }
 519
 520         switch (fc_conf->mode) {
 521         case RTE_FC_NONE:
 522                 fcntl = 0;
 523                 break;
 524         case RTE_FC_RX_PAUSE:
 525                 fcntl = EFX_FCNTL_RESPOND;
 526                 break;
 527         case RTE_FC_TX_PAUSE:
 528                 fcntl = EFX_FCNTL_GENERATE;
 529                 break;
 530         case RTE_FC_FULL:
 531                 fcntl = EFX_FCNTL_RESPOND | EFX_FCNTL_GENERATE;
 532                 break;
 533         default:
 534                 rc = EINVAL;
 535                 goto fail_inval;
 536         }
 537
 538         sfc_adapter_lock(sa);
 539
 540         if (sa->state == SFC_ADAPTER_STARTED) {
 541                 rc = efx_mac_fcntl_set(sa->nic, fcntl, fc_conf->autoneg);
 542                 if (rc != 0)
 543                         goto fail_mac_fcntl_set;
 544         }
 545
 546         port->flow_ctrl = fcntl;
 547         port->flow_ctrl_autoneg = fc_conf->autoneg;
 548
 549         sfc_adapter_unlock(sa);
 550
 551         return 0;
 552
 553 fail_mac_fcntl_set:
 554         sfc_adapter_unlock(sa);
 555 fail_inval:
 556         SFC_ASSERT(rc > 0);
 557         return -rc;
 558 }
 559
 560 static int
 561 sfc_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 562 {
 563         struct sfc_adapter *sa = dev->data->dev_private;
 564         size_t pdu = EFX_MAC_PDU(mtu);
 565         size_t old_pdu;
 566         int rc;
 567
 568         sfc_log_init(sa, "mtu=%u", mtu);
 569
 570         rc = EINVAL;
 571         if (pdu < EFX_MAC_PDU_MIN) {
 572                 sfc_err(sa, "too small MTU %u (PDU size %u less than min %u)",
 573                         (unsigned int)mtu, (unsigned int)pdu,
 574                         EFX_MAC_PDU_MIN);
 575                 goto fail_inval;
 576         }
 577         if (pdu > EFX_MAC_PDU_MAX) {
 578                 sfc_err(sa, "too big MTU %u (PDU size %u greater than max %u)",
 579                         (unsigned int)mtu, (unsigned int)pdu,
 580                         EFX_MAC_PDU_MAX);
 581                 goto fail_inval;
 582         }
 583
 584         sfc_adapter_lock(sa);
 585
 586         if (pdu != sa->port.pdu) {
 587                 if (sa->state == SFC_ADAPTER_STARTED) {
 588                         sfc_stop(sa);
 589
 590                         old_pdu = sa->port.pdu;
 591                         sa->port.pdu = pdu;
 592                         rc = sfc_start(sa);
 593                         if (rc != 0)
 594                                 goto fail_start;
 595                 } else {
 596                         sa->port.pdu = pdu;
 597                 }
 598         }
 599
 600         /*
 601          * The driver does not use it, but other PMDs update jumbo_frame
 602          * flag and max_rx_pkt_len when MTU is set.
 603          */
 604         dev->data->dev_conf.rxmode.jumbo_frame = (mtu > ETHER_MAX_LEN);
 605         dev->data->dev_conf.rxmode.max_rx_pkt_len = sa->port.pdu;
 606
 607         sfc_adapter_unlock(sa);
 608
 609         sfc_log_init(sa, "done");
 610         return 0;
 611
 612 fail_start:
 613         sa->port.pdu = old_pdu;
 614         if (sfc_start(sa) != 0)
 615                 sfc_err(sa, "cannot start with neither new (%u) nor old (%u) "
 616                         "PDU max size - port is stopped",
 617                         (unsigned int)pdu, (unsigned int)old_pdu);
 618         sfc_adapter_unlock(sa);
 619
 620 fail_inval:
 621         sfc_log_init(sa, "failed %d", rc);
 622         SFC_ASSERT(rc > 0);
 623         return -rc;
 624 }
 625
 626 static const struct eth_dev_ops sfc_eth_dev_ops = {
 627         .dev_configure                  = sfc_dev_configure,
 628         .dev_start                      = sfc_dev_start,
 629         .dev_stop                       = sfc_dev_stop,
 630         .dev_close                      = sfc_dev_close,
 631         .link_update                    = sfc_dev_link_update,
 632         .stats_get                      = sfc_stats_get,
 633         .xstats_get                     = sfc_xstats_get,
 634         .xstats_get_names               = sfc_xstats_get_names,
 635         .dev_infos_get                  = sfc_dev_infos_get,
 636         .mtu_set                        = sfc_dev_set_mtu,
 637         .rx_queue_setup                 = sfc_rx_queue_setup,
 638         .rx_queue_release               = sfc_rx_queue_release,
 639         .tx_queue_setup                 = sfc_tx_queue_setup,
 640         .tx_queue_release               = sfc_tx_queue_release,
 641         .flow_ctrl_get                  = sfc_flow_ctrl_get,
 642         .flow_ctrl_set                  = sfc_flow_ctrl_set,
 643 };
 644
 645 static int
 646 sfc_eth_dev_init(struct rte_eth_dev *dev)
 647 {
 648         struct sfc_adapter *sa = dev->data->dev_private;
 649         struct rte_pci_device *pci_dev = SFC_DEV_TO_PCI(dev);
 650         int rc;
 651         const efx_nic_cfg_t *encp;
 652         const struct ether_addr *from;
 653
 654         /* Required for logging */
 655         sa->eth_dev = dev;
 656
 657         /* Copy PCI device info to the dev->data */
 658         rte_eth_copy_pci_info(dev, pci_dev);
 659
 660         rc = sfc_kvargs_parse(sa);
 661         if (rc != 0)
 662                 goto fail_kvargs_parse;
 663
 664         rc = sfc_kvargs_process(sa, SFC_KVARG_DEBUG_INIT,
 665                                 sfc_kvarg_bool_handler, &sa->debug_init);
 666         if (rc != 0)
 667                 goto fail_kvarg_debug_init;
 668
 669         sfc_log_init(sa, "entry");
 670
 671         dev->data->mac_addrs = rte_zmalloc("sfc", ETHER_ADDR_LEN, 0);
 672         if (dev->data->mac_addrs == NULL) {
 673                 rc = ENOMEM;
 674                 goto fail_mac_addrs;
 675         }
 676
 677         sfc_adapter_lock_init(sa);
 678         sfc_adapter_lock(sa);
 679
 680         sfc_log_init(sa, "attaching");
 681         rc = sfc_attach(sa);
 682         if (rc != 0)
 683                 goto fail_attach;
 684
 685         encp = efx_nic_cfg_get(sa->nic);
 686
 687         /*
 688          * The arguments are really reverse order in comparison to
 689          * Linux kernel. Copy from NIC config to Ethernet device data.
 690          */
 691         from = (const struct ether_addr *)(encp->enc_mac_addr);
 692         ether_addr_copy(from, &dev->data->mac_addrs[0]);
 693
 694         dev->dev_ops = &sfc_eth_dev_ops;
 695         dev->rx_pkt_burst = &sfc_recv_pkts;
 696         dev->tx_pkt_burst = &sfc_xmit_pkts;
 697
 698         sfc_adapter_unlock(sa);
 699
 700         sfc_log_init(sa, "done");
 701         return 0;
 702
 703 fail_attach:
 704         sfc_adapter_unlock(sa);
 705         sfc_adapter_lock_fini(sa);
 706         rte_free(dev->data->mac_addrs);
 707         dev->data->mac_addrs = NULL;
 708
 709 fail_mac_addrs:
 710 fail_kvarg_debug_init:
 711         sfc_kvargs_cleanup(sa);
 712
 713 fail_kvargs_parse:
 714         sfc_log_init(sa, "failed %d", rc);
 715         SFC_ASSERT(rc > 0);
 716         return -rc;
 717 }
 718
 719 static int
 720 sfc_eth_dev_uninit(struct rte_eth_dev *dev)
 721 {
 722         struct sfc_adapter *sa = dev->data->dev_private;
 723
 724         sfc_log_init(sa, "entry");
 725
 726         sfc_adapter_lock(sa);
 727
 728         sfc_detach(sa);
 729
 730         rte_free(dev->data->mac_addrs);
 731         dev->data->mac_addrs = NULL;
 732
 733         dev->dev_ops = NULL;
 734         dev->rx_pkt_burst = NULL;
 735         dev->tx_pkt_burst = NULL;
 736
 737         sfc_kvargs_cleanup(sa);
 738
 739         sfc_adapter_unlock(sa);
 740         sfc_adapter_lock_fini(sa);
 741
 742         sfc_log_init(sa, "done");
 743
 744         /* Required for logging, so cleanup last */
 745         sa->eth_dev = NULL;
 746         return 0;
 747 }
 748
 749 static const struct rte_pci_id pci_id_sfc_efx_map[] = {
 750         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_FARMINGDALE) },
 751         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_GREENPORT) },
 752         { RTE_PCI_DEVICE(EFX_PCI_VENID_SFC, EFX_PCI_DEVID_MEDFORD) },
 753         { .vendor_id = 0 /* sentinel */ }
 754 };
 755
 756 static struct eth_driver sfc_efx_pmd = {
 757         .pci_drv = {
 758                 .id_table = pci_id_sfc_efx_map,
 759                 .drv_flags =
 760                         RTE_PCI_DRV_INTR_LSC |
 761                         RTE_PCI_DRV_NEED_MAPPING,
 762                 .probe = rte_eth_dev_pci_probe,
 763                 .remove = rte_eth_dev_pci_remove,
 764         },
 765         .eth_dev_init = sfc_eth_dev_init,
 766         .eth_dev_uninit = sfc_eth_dev_uninit,
 767         .dev_private_size = sizeof(struct sfc_adapter),
 768 };
 769
 770 RTE_PMD_REGISTER_PCI(net_sfc_efx, sfc_efx_pmd.pci_drv);
 771 RTE_PMD_REGISTER_PCI_TABLE(net_sfc_efx, pci_id_sfc_efx_map);
 772 RTE_PMD_REGISTER_PARAM_STRING(net_sfc_efx,
 773         SFC_KVARG_PERF_PROFILE "=" SFC_KVARG_VALUES_PERF_PROFILE " "
 774         SFC_KVARG_MCDI_LOGGING "=" SFC_KVARG_VALUES_BOOL " "
 775         SFC_KVARG_DEBUG_INIT "=" SFC_KVARG_VALUES_BOOL);