drivers/net/enic/enic_ethdev.c

   1 /*
   2  * Copyright 2008-2014 Cisco Systems, Inc.  All rights reserved.
   3  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
   4  *
   5  * Copyright (c) 2014, Cisco Systems, Inc.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  * notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  * notice, this list of conditions and the following disclaimer in
  17  * the documentation and/or other materials provided with the
  18  * distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  23  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  24  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  26  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  27  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  28  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  30  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31  * POSSIBILITY OF SUCH DAMAGE.
  32  *
  33  */
  34
  35 #include <stdio.h>
  36 #include <stdint.h>
  37
  38 #include <rte_dev.h>
  39 #include <rte_pci.h>
  40 #include <rte_ethdev.h>
  41 #include <rte_string_fns.h>
  42
  43 #include "vnic_intr.h"
  44 #include "vnic_cq.h"
  45 #include "vnic_wq.h"
  46 #include "vnic_rq.h"
  47 #include "vnic_enet.h"
  48 #include "enic.h"
  49
  50 #ifdef RTE_LIBRTE_ENIC_DEBUG
  51 #define ENICPMD_FUNC_TRACE() \
  52         RTE_LOG(DEBUG, PMD, "ENICPMD trace: %s\n", __func__)
  53 #else
  54 #define ENICPMD_FUNC_TRACE() (void)0
  55 #endif
  56
  57 /*
  58  * The set of PCI devices this driver supports
  59  */
  60 #define CISCO_PCI_VENDOR_ID 0x1137
  61 static const struct rte_pci_id pci_id_enic_map[] = {
  62         { RTE_PCI_DEVICE(CISCO_PCI_VENDOR_ID, PCI_DEVICE_ID_CISCO_VIC_ENET) },
  63         { RTE_PCI_DEVICE(CISCO_PCI_VENDOR_ID, PCI_DEVICE_ID_CISCO_VIC_ENET_VF) },
  64         {.vendor_id = 0, /* sentinel */},
  65 };
  66
  67 static int
  68 enicpmd_fdir_ctrl_func(struct rte_eth_dev *eth_dev,
  69                         enum rte_filter_op filter_op, void *arg)
  70 {
  71         struct enic *enic = pmd_priv(eth_dev);
  72         int ret = 0;
  73
  74         ENICPMD_FUNC_TRACE();
  75         if (filter_op == RTE_ETH_FILTER_NOP)
  76                 return 0;
  77
  78         if (arg == NULL && filter_op != RTE_ETH_FILTER_FLUSH)
  79                 return -EINVAL;
  80
  81         switch (filter_op) {
  82         case RTE_ETH_FILTER_ADD:
  83         case RTE_ETH_FILTER_UPDATE:
  84                 ret = enic_fdir_add_fltr(enic,
  85                         (struct rte_eth_fdir_filter *)arg);
  86                 break;
  87
  88         case RTE_ETH_FILTER_DELETE:
  89                 ret = enic_fdir_del_fltr(enic,
  90                         (struct rte_eth_fdir_filter *)arg);
  91                 break;
  92
  93         case RTE_ETH_FILTER_STATS:
  94                 enic_fdir_stats_get(enic, (struct rte_eth_fdir_stats *)arg);
  95                 break;
  96
  97         case RTE_ETH_FILTER_FLUSH:
  98                 dev_warning(enic, "unsupported operation %u", filter_op);
  99                 ret = -ENOTSUP;
 100                 break;
 101         case RTE_ETH_FILTER_INFO:
 102                 enic_fdir_info_get(enic, (struct rte_eth_fdir_info *)arg);
 103                 break;
 104         default:
 105                 dev_err(enic, "unknown operation %u", filter_op);
 106                 ret = -EINVAL;
 107                 break;
 108         }
 109         return ret;
 110 }
 111
 112 static int
 113 enicpmd_dev_filter_ctrl(struct rte_eth_dev *dev,
 114                      enum rte_filter_type filter_type,
 115                      enum rte_filter_op filter_op,
 116                      void *arg)
 117 {
 118         int ret = -EINVAL;
 119
 120         if (RTE_ETH_FILTER_FDIR == filter_type)
 121                 ret = enicpmd_fdir_ctrl_func(dev, filter_op, arg);
 122         else
 123                 dev_warning(enic, "Filter type (%d) not supported",
 124                         filter_type);
 125
 126         return ret;
 127 }
 128
 129 static void enicpmd_dev_tx_queue_release(void *txq)
 130 {
 131         ENICPMD_FUNC_TRACE();
 132         enic_free_wq(txq);
 133 }
 134
 135 static int enicpmd_dev_setup_intr(struct enic *enic)
 136 {
 137         int ret;
 138         unsigned int index;
 139
 140         ENICPMD_FUNC_TRACE();
 141
 142         /* Are we done with the init of all the queues? */
 143         for (index = 0; index < enic->cq_count; index++) {
 144                 if (!enic->cq[index].ctrl)
 145                         break;
 146         }
 147         if (enic->cq_count != index)
 148                 return 0;
 149         for (index = 0; index < enic->wq_count; index++) {
 150                 if (!enic->wq[index].ctrl)
 151                         break;
 152         }
 153         if (enic->wq_count != index)
 154                 return 0;
 155         /* check start of packet (SOP) RQs only in case scatter is disabled. */
 156         for (index = 0; index < enic->rq_count; index++) {
 157                 if (!enic->rq[enic_rte_rq_idx_to_sop_idx(index)].ctrl)
 158                         break;
 159         }
 160         if (enic->rq_count != index)
 161                 return 0;
 162
 163         ret = enic_alloc_intr_resources(enic);
 164         if (ret) {
 165                 dev_err(enic, "alloc intr failed\n");
 166                 return ret;
 167         }
 168         enic_init_vnic_resources(enic);
 169
 170         ret = enic_setup_finish(enic);
 171         if (ret)
 172                 dev_err(enic, "setup could not be finished\n");
 173
 174         return ret;
 175 }
 176
 177 static int enicpmd_dev_tx_queue_setup(struct rte_eth_dev *eth_dev,
 178         uint16_t queue_idx,
 179         uint16_t nb_desc,
 180         unsigned int socket_id,
 181         __rte_unused const struct rte_eth_txconf *tx_conf)
 182 {
 183         int ret;
 184         struct enic *enic = pmd_priv(eth_dev);
 185
 186         ENICPMD_FUNC_TRACE();
 187         RTE_ASSERT(queue_idx < enic->conf_wq_count);
 188         eth_dev->data->tx_queues[queue_idx] = (void *)&enic->wq[queue_idx];
 189
 190         ret = enic_alloc_wq(enic, queue_idx, socket_id, nb_desc);
 191         if (ret) {
 192                 dev_err(enic, "error in allocating wq\n");
 193                 return ret;
 194         }
 195
 196         return enicpmd_dev_setup_intr(enic);
 197 }
 198
 199 static int enicpmd_dev_tx_queue_start(struct rte_eth_dev *eth_dev,
 200         uint16_t queue_idx)
 201 {
 202         struct enic *enic = pmd_priv(eth_dev);
 203
 204         ENICPMD_FUNC_TRACE();
 205
 206         enic_start_wq(enic, queue_idx);
 207
 208         return 0;
 209 }
 210
 211 static int enicpmd_dev_tx_queue_stop(struct rte_eth_dev *eth_dev,
 212         uint16_t queue_idx)
 213 {
 214         int ret;
 215         struct enic *enic = pmd_priv(eth_dev);
 216
 217         ENICPMD_FUNC_TRACE();
 218
 219         ret = enic_stop_wq(enic, queue_idx);
 220         if (ret)
 221                 dev_err(enic, "error in stopping wq %d\n", queue_idx);
 222
 223         return ret;
 224 }
 225
 226 static int enicpmd_dev_rx_queue_start(struct rte_eth_dev *eth_dev,
 227         uint16_t queue_idx)
 228 {
 229         struct enic *enic = pmd_priv(eth_dev);
 230
 231         ENICPMD_FUNC_TRACE();
 232
 233         enic_start_rq(enic, queue_idx);
 234
 235         return 0;
 236 }
 237
 238 static int enicpmd_dev_rx_queue_stop(struct rte_eth_dev *eth_dev,
 239         uint16_t queue_idx)
 240 {
 241         int ret;
 242         struct enic *enic = pmd_priv(eth_dev);
 243
 244         ENICPMD_FUNC_TRACE();
 245
 246         ret = enic_stop_rq(enic, queue_idx);
 247         if (ret)
 248                 dev_err(enic, "error in stopping rq %d\n", queue_idx);
 249
 250         return ret;
 251 }
 252
 253 static void enicpmd_dev_rx_queue_release(void *rxq)
 254 {
 255         ENICPMD_FUNC_TRACE();
 256         enic_free_rq(rxq);
 257 }
 258
 259 static uint32_t enicpmd_dev_rx_queue_count(struct rte_eth_dev *dev,
 260                                            uint16_t rx_queue_id)
 261 {
 262         struct enic *enic = pmd_priv(dev);
 263         uint32_t queue_count = 0;
 264         struct vnic_cq *cq;
 265         uint32_t cq_tail;
 266         uint16_t cq_idx;
 267         int rq_num;
 268
 269         if (rx_queue_id >= dev->data->nb_rx_queues) {
 270                 dev_err(enic, "Invalid RX queue id=%d", rx_queue_id);
 271                 return 0;
 272         }
 273
 274         rq_num = enic_rte_rq_idx_to_sop_idx(rx_queue_id);
 275         cq = &enic->cq[enic_cq_rq(enic, rq_num)];
 276         cq_idx = cq->to_clean;
 277
 278         cq_tail = ioread32(&cq->ctrl->cq_tail);
 279
 280         if (cq_tail < cq_idx)
 281                 cq_tail += cq->ring.desc_count;
 282
 283         queue_count = cq_tail - cq_idx;
 284
 285         return queue_count;
 286 }
 287
 288 static int enicpmd_dev_rx_queue_setup(struct rte_eth_dev *eth_dev,
 289         uint16_t queue_idx,
 290         uint16_t nb_desc,
 291         unsigned int socket_id,
 292         const struct rte_eth_rxconf *rx_conf,
 293         struct rte_mempool *mp)
 294 {
 295         int ret;
 296         struct enic *enic = pmd_priv(eth_dev);
 297
 298         ENICPMD_FUNC_TRACE();
 299
 300         RTE_ASSERT(enic_rte_rq_idx_to_sop_idx(queue_idx) < enic->conf_rq_count);
 301         eth_dev->data->rx_queues[queue_idx] =
 302                 (void *)&enic->rq[enic_rte_rq_idx_to_sop_idx(queue_idx)];
 303
 304         ret = enic_alloc_rq(enic, queue_idx, socket_id, mp, nb_desc,
 305                             rx_conf->rx_free_thresh);
 306         if (ret) {
 307                 dev_err(enic, "error in allocating rq\n");
 308                 return ret;
 309         }
 310
 311         return enicpmd_dev_setup_intr(enic);
 312 }
 313
 314 static int enicpmd_vlan_filter_set(struct rte_eth_dev *eth_dev,
 315         uint16_t vlan_id, int on)
 316 {
 317         struct enic *enic = pmd_priv(eth_dev);
 318         int err;
 319
 320         ENICPMD_FUNC_TRACE();
 321         if (on)
 322                 err = enic_add_vlan(enic, vlan_id);
 323         else
 324                 err = enic_del_vlan(enic, vlan_id);
 325         return err;
 326 }
 327
 328 static void enicpmd_vlan_offload_set(struct rte_eth_dev *eth_dev, int mask)
 329 {
 330         struct enic *enic = pmd_priv(eth_dev);
 331
 332         ENICPMD_FUNC_TRACE();
 333
 334         if (mask & ETH_VLAN_STRIP_MASK) {
 335                 if (eth_dev->data->dev_conf.rxmode.hw_vlan_strip)
 336                         enic->ig_vlan_strip_en = 1;
 337                 else
 338                         enic->ig_vlan_strip_en = 0;
 339         }
 340         enic_set_rss_nic_cfg(enic);
 341
 342
 343         if (mask & ETH_VLAN_FILTER_MASK) {
 344                 dev_warning(enic,
 345                         "Configuration of VLAN filter is not supported\n");
 346         }
 347
 348         if (mask & ETH_VLAN_EXTEND_MASK) {
 349                 dev_warning(enic,
 350                         "Configuration of extended VLAN is not supported\n");
 351         }
 352 }
 353
 354 static int enicpmd_dev_configure(struct rte_eth_dev *eth_dev)
 355 {
 356         int ret;
 357         struct enic *enic = pmd_priv(eth_dev);
 358
 359         ENICPMD_FUNC_TRACE();
 360         ret = enic_set_vnic_res(enic);
 361         if (ret) {
 362                 dev_err(enic, "Set vNIC resource num  failed, aborting\n");
 363                 return ret;
 364         }
 365
 366         if (eth_dev->data->dev_conf.rxmode.split_hdr_size &&
 367                 eth_dev->data->dev_conf.rxmode.header_split) {
 368                 /* Enable header-data-split */
 369                 enic_set_hdr_split_size(enic,
 370                         eth_dev->data->dev_conf.rxmode.split_hdr_size);
 371         }
 372
 373         enicpmd_vlan_offload_set(eth_dev, ETH_VLAN_STRIP_MASK);
 374         enic->hw_ip_checksum = eth_dev->data->dev_conf.rxmode.hw_ip_checksum;
 375         return 0;
 376 }
 377
 378 /* Start the device.
 379  * It returns 0 on success.
 380  */
 381 static int enicpmd_dev_start(struct rte_eth_dev *eth_dev)
 382 {
 383         struct enic *enic = pmd_priv(eth_dev);
 384
 385         ENICPMD_FUNC_TRACE();
 386         return enic_enable(enic);
 387 }
 388
 389 /*
 390  * Stop device: disable rx and tx functions to allow for reconfiguring.
 391  */
 392 static void enicpmd_dev_stop(struct rte_eth_dev *eth_dev)
 393 {
 394         struct rte_eth_link link;
 395         struct enic *enic = pmd_priv(eth_dev);
 396
 397         ENICPMD_FUNC_TRACE();
 398         enic_disable(enic);
 399         memset(&link, 0, sizeof(link));
 400         rte_atomic64_cmpset((uint64_t *)&eth_dev->data->dev_link,
 401                 *(uint64_t *)&eth_dev->data->dev_link,
 402                 *(uint64_t *)&link);
 403 }
 404
 405 /*
 406  * Stop device.
 407  */
 408 static void enicpmd_dev_close(struct rte_eth_dev *eth_dev)
 409 {
 410         struct enic *enic = pmd_priv(eth_dev);
 411
 412         ENICPMD_FUNC_TRACE();
 413         enic_remove(enic);
 414 }
 415
 416 static int enicpmd_dev_link_update(struct rte_eth_dev *eth_dev,
 417         __rte_unused int wait_to_complete)
 418 {
 419         struct enic *enic = pmd_priv(eth_dev);
 420
 421         ENICPMD_FUNC_TRACE();
 422         return enic_link_update(enic);
 423 }
 424
 425 static void enicpmd_dev_stats_get(struct rte_eth_dev *eth_dev,
 426         struct rte_eth_stats *stats)
 427 {
 428         struct enic *enic = pmd_priv(eth_dev);
 429
 430         ENICPMD_FUNC_TRACE();
 431         enic_dev_stats_get(enic, stats);
 432 }
 433
 434 static void enicpmd_dev_stats_reset(struct rte_eth_dev *eth_dev)
 435 {
 436         struct enic *enic = pmd_priv(eth_dev);
 437
 438         ENICPMD_FUNC_TRACE();
 439         enic_dev_stats_clear(enic);
 440 }
 441
 442 static void enicpmd_dev_info_get(struct rte_eth_dev *eth_dev,
 443         struct rte_eth_dev_info *device_info)
 444 {
 445         struct enic *enic = pmd_priv(eth_dev);
 446
 447         ENICPMD_FUNC_TRACE();
 448         /* Scattered Rx uses two receive queues per rx queue exposed to dpdk */
 449         device_info->max_rx_queues = enic->conf_rq_count / 2;
 450         device_info->max_tx_queues = enic->conf_wq_count;
 451         device_info->min_rx_bufsize = ENIC_MIN_MTU;
 452         device_info->max_rx_pktlen = enic->max_mtu + ETHER_HDR_LEN + 4;
 453         device_info->max_mac_addrs = 1;
 454         device_info->rx_offload_capa =
 455                 DEV_RX_OFFLOAD_VLAN_STRIP |
 456                 DEV_RX_OFFLOAD_IPV4_CKSUM |
 457                 DEV_RX_OFFLOAD_UDP_CKSUM  |
 458                 DEV_RX_OFFLOAD_TCP_CKSUM;
 459         device_info->tx_offload_capa =
 460                 DEV_TX_OFFLOAD_VLAN_INSERT |
 461                 DEV_TX_OFFLOAD_IPV4_CKSUM  |
 462                 DEV_TX_OFFLOAD_UDP_CKSUM   |
 463                 DEV_TX_OFFLOAD_TCP_CKSUM;
 464         device_info->default_rxconf = (struct rte_eth_rxconf) {
 465                 .rx_free_thresh = ENIC_DEFAULT_RX_FREE_THRESH
 466         };
 467 }
 468
 469 static const uint32_t *enicpmd_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 470 {
 471         static const uint32_t ptypes[] = {
 472                 RTE_PTYPE_L2_ETHER,
 473                 RTE_PTYPE_L2_ETHER_VLAN,
 474                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 475                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 476                 RTE_PTYPE_L4_TCP,
 477                 RTE_PTYPE_L4_UDP,
 478                 RTE_PTYPE_L4_FRAG,
 479                 RTE_PTYPE_L4_NONFRAG,
 480                 RTE_PTYPE_UNKNOWN
 481         };
 482
 483         if (dev->rx_pkt_burst == enic_recv_pkts)
 484                 return ptypes;
 485         return NULL;
 486 }
 487
 488 static void enicpmd_dev_promiscuous_enable(struct rte_eth_dev *eth_dev)
 489 {
 490         struct enic *enic = pmd_priv(eth_dev);
 491
 492         ENICPMD_FUNC_TRACE();
 493         enic->promisc = 1;
 494         enic_add_packet_filter(enic);
 495 }
 496
 497 static void enicpmd_dev_promiscuous_disable(struct rte_eth_dev *eth_dev)
 498 {
 499         struct enic *enic = pmd_priv(eth_dev);
 500
 501         ENICPMD_FUNC_TRACE();
 502         enic->promisc = 0;
 503         enic_add_packet_filter(enic);
 504 }
 505
 506 static void enicpmd_dev_allmulticast_enable(struct rte_eth_dev *eth_dev)
 507 {
 508         struct enic *enic = pmd_priv(eth_dev);
 509
 510         ENICPMD_FUNC_TRACE();
 511         enic->allmulti = 1;
 512         enic_add_packet_filter(enic);
 513 }
 514
 515 static void enicpmd_dev_allmulticast_disable(struct rte_eth_dev *eth_dev)
 516 {
 517         struct enic *enic = pmd_priv(eth_dev);
 518
 519         ENICPMD_FUNC_TRACE();
 520         enic->allmulti = 0;
 521         enic_add_packet_filter(enic);
 522 }
 523
 524 static void enicpmd_add_mac_addr(struct rte_eth_dev *eth_dev,
 525         struct ether_addr *mac_addr,
 526         __rte_unused uint32_t index, __rte_unused uint32_t pool)
 527 {
 528         struct enic *enic = pmd_priv(eth_dev);
 529
 530         ENICPMD_FUNC_TRACE();
 531         enic_set_mac_address(enic, mac_addr->addr_bytes);
 532 }
 533
 534 static void enicpmd_remove_mac_addr(struct rte_eth_dev *eth_dev, __rte_unused uint32_t index)
 535 {
 536         struct enic *enic = pmd_priv(eth_dev);
 537
 538         ENICPMD_FUNC_TRACE();
 539         enic_del_mac_address(enic);
 540 }
 541
 542 static int enicpmd_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu)
 543 {
 544         struct enic *enic = pmd_priv(eth_dev);
 545
 546         ENICPMD_FUNC_TRACE();
 547         return enic_set_mtu(enic, mtu);
 548 }
 549
 550 static const struct eth_dev_ops enicpmd_eth_dev_ops = {
 551         .dev_configure        = enicpmd_dev_configure,
 552         .dev_start            = enicpmd_dev_start,
 553         .dev_stop             = enicpmd_dev_stop,
 554         .dev_set_link_up      = NULL,
 555         .dev_set_link_down    = NULL,
 556         .dev_close            = enicpmd_dev_close,
 557         .promiscuous_enable   = enicpmd_dev_promiscuous_enable,
 558         .promiscuous_disable  = enicpmd_dev_promiscuous_disable,
 559         .allmulticast_enable  = enicpmd_dev_allmulticast_enable,
 560         .allmulticast_disable = enicpmd_dev_allmulticast_disable,
 561         .link_update          = enicpmd_dev_link_update,
 562         .stats_get            = enicpmd_dev_stats_get,
 563         .stats_reset          = enicpmd_dev_stats_reset,
 564         .queue_stats_mapping_set = NULL,
 565         .dev_infos_get        = enicpmd_dev_info_get,
 566         .dev_supported_ptypes_get = enicpmd_dev_supported_ptypes_get,
 567         .mtu_set              = enicpmd_mtu_set,
 568         .vlan_filter_set      = enicpmd_vlan_filter_set,
 569         .vlan_tpid_set        = NULL,
 570         .vlan_offload_set     = enicpmd_vlan_offload_set,
 571         .vlan_strip_queue_set = NULL,
 572         .rx_queue_start       = enicpmd_dev_rx_queue_start,
 573         .rx_queue_stop        = enicpmd_dev_rx_queue_stop,
 574         .tx_queue_start       = enicpmd_dev_tx_queue_start,
 575         .tx_queue_stop        = enicpmd_dev_tx_queue_stop,
 576         .rx_queue_setup       = enicpmd_dev_rx_queue_setup,
 577         .rx_queue_release     = enicpmd_dev_rx_queue_release,
 578         .rx_queue_count       = enicpmd_dev_rx_queue_count,
 579         .rx_descriptor_done   = NULL,
 580         .tx_queue_setup       = enicpmd_dev_tx_queue_setup,
 581         .tx_queue_release     = enicpmd_dev_tx_queue_release,
 582         .dev_led_on           = NULL,
 583         .dev_led_off          = NULL,
 584         .flow_ctrl_get        = NULL,
 585         .flow_ctrl_set        = NULL,
 586         .priority_flow_ctrl_set = NULL,
 587         .mac_addr_add         = enicpmd_add_mac_addr,
 588         .mac_addr_remove      = enicpmd_remove_mac_addr,
 589         .filter_ctrl          = enicpmd_dev_filter_ctrl,
 590 };
 591
 592 struct enic *enicpmd_list_head = NULL;
 593 /* Initialize the driver
 594  * It returns 0 on success.
 595  */
 596 static int eth_enicpmd_dev_init(struct rte_eth_dev *eth_dev)
 597 {
 598         struct rte_pci_device *pdev;
 599         struct rte_pci_addr *addr;
 600         struct enic *enic = pmd_priv(eth_dev);
 601
 602         ENICPMD_FUNC_TRACE();
 603
 604         enic->port_id = eth_dev->data->port_id;
 605         enic->rte_dev = eth_dev;
 606         eth_dev->dev_ops = &enicpmd_eth_dev_ops;
 607         eth_dev->rx_pkt_burst = &enic_recv_pkts;
 608         eth_dev->tx_pkt_burst = &enic_xmit_pkts;
 609
 610         pdev = eth_dev->pci_dev;
 611         rte_eth_copy_pci_info(eth_dev, pdev);
 612         enic->pdev = pdev;
 613         addr = &pdev->addr;
 614
 615         snprintf(enic->bdf_name, ENICPMD_BDF_LENGTH, "%04x:%02x:%02x.%x",
 616                 addr->domain, addr->bus, addr->devid, addr->function);
 617
 618         return enic_probe(enic);
 619 }
 620
 621 static struct eth_driver rte_enic_pmd = {
 622         .pci_drv = {
 623                 .id_table = pci_id_enic_map,
 624                 .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC,
 625                 .probe = rte_eth_dev_pci_probe,
 626                 .remove = rte_eth_dev_pci_remove,
 627         },
 628         .eth_dev_init = eth_enicpmd_dev_init,
 629         .dev_private_size = sizeof(struct enic),
 630 };
 631
 632 RTE_PMD_REGISTER_PCI(net_enic, rte_enic_pmd.pci_drv);
 633 RTE_PMD_REGISTER_PCI_TABLE(net_enic, pci_id_enic_map);