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_kvargs.h>
  42 #include <rte_string_fns.h>
  43
  44 #include "vnic_intr.h"
  45 #include "vnic_cq.h"
  46 #include "vnic_wq.h"
  47 #include "vnic_rq.h"
  48 #include "vnic_enet.h"
  49 #include "enic.h"
  50
  51 #ifdef RTE_LIBRTE_ENIC_DEBUG
  52 #define ENICPMD_FUNC_TRACE() \
  53         RTE_LOG(DEBUG, PMD, "ENICPMD trace: %s\n", __func__)
  54 #else
  55 #define ENICPMD_FUNC_TRACE() (void)0
  56 #endif
  57
  58 /*
  59  * The set of PCI devices this driver supports
  60  */
  61 #define CISCO_PCI_VENDOR_ID 0x1137
  62 static const struct rte_pci_id pci_id_enic_map[] = {
  63         { RTE_PCI_DEVICE(CISCO_PCI_VENDOR_ID, PCI_DEVICE_ID_CISCO_VIC_ENET) },
  64         { RTE_PCI_DEVICE(CISCO_PCI_VENDOR_ID, PCI_DEVICE_ID_CISCO_VIC_ENET_VF) },
  65         {.vendor_id = 0, /* sentinel */},
  66 };
  67
  68 #define ENIC_DEVARG_IG_VLAN_REWRITE "ig-vlan-rewrite"
  69
  70 static int
  71 enicpmd_fdir_ctrl_func(struct rte_eth_dev *eth_dev,
  72                         enum rte_filter_op filter_op, void *arg)
  73 {
  74         struct enic *enic = pmd_priv(eth_dev);
  75         int ret = 0;
  76
  77         ENICPMD_FUNC_TRACE();
  78         if (filter_op == RTE_ETH_FILTER_NOP)
  79                 return 0;
  80
  81         if (arg == NULL && filter_op != RTE_ETH_FILTER_FLUSH)
  82                 return -EINVAL;
  83
  84         switch (filter_op) {
  85         case RTE_ETH_FILTER_ADD:
  86         case RTE_ETH_FILTER_UPDATE:
  87                 ret = enic_fdir_add_fltr(enic,
  88                         (struct rte_eth_fdir_filter *)arg);
  89                 break;
  90
  91         case RTE_ETH_FILTER_DELETE:
  92                 ret = enic_fdir_del_fltr(enic,
  93                         (struct rte_eth_fdir_filter *)arg);
  94                 break;
  95
  96         case RTE_ETH_FILTER_STATS:
  97                 enic_fdir_stats_get(enic, (struct rte_eth_fdir_stats *)arg);
  98                 break;
  99
 100         case RTE_ETH_FILTER_FLUSH:
 101                 dev_warning(enic, "unsupported operation %u", filter_op);
 102                 ret = -ENOTSUP;
 103                 break;
 104         case RTE_ETH_FILTER_INFO:
 105                 enic_fdir_info_get(enic, (struct rte_eth_fdir_info *)arg);
 106                 break;
 107         default:
 108                 dev_err(enic, "unknown operation %u", filter_op);
 109                 ret = -EINVAL;
 110                 break;
 111         }
 112         return ret;
 113 }
 114
 115 static int
 116 enicpmd_dev_filter_ctrl(struct rte_eth_dev *dev,
 117                      enum rte_filter_type filter_type,
 118                      enum rte_filter_op filter_op,
 119                      void *arg)
 120 {
 121         int ret = -EINVAL;
 122
 123         if (RTE_ETH_FILTER_FDIR == filter_type)
 124                 ret = enicpmd_fdir_ctrl_func(dev, filter_op, arg);
 125         else
 126                 dev_warning(enic, "Filter type (%d) not supported",
 127                         filter_type);
 128
 129         return ret;
 130 }
 131
 132 static void enicpmd_dev_tx_queue_release(void *txq)
 133 {
 134         ENICPMD_FUNC_TRACE();
 135         enic_free_wq(txq);
 136 }
 137
 138 static int enicpmd_dev_setup_intr(struct enic *enic)
 139 {
 140         int ret;
 141         unsigned int index;
 142
 143         ENICPMD_FUNC_TRACE();
 144
 145         /* Are we done with the init of all the queues? */
 146         for (index = 0; index < enic->cq_count; index++) {
 147                 if (!enic->cq[index].ctrl)
 148                         break;
 149         }
 150         if (enic->cq_count != index)
 151                 return 0;
 152         for (index = 0; index < enic->wq_count; index++) {
 153                 if (!enic->wq[index].ctrl)
 154                         break;
 155         }
 156         if (enic->wq_count != index)
 157                 return 0;
 158         /* check start of packet (SOP) RQs only in case scatter is disabled. */
 159         for (index = 0; index < enic->rq_count; index++) {
 160                 if (!enic->rq[enic_rte_rq_idx_to_sop_idx(index)].ctrl)
 161                         break;
 162         }
 163         if (enic->rq_count != index)
 164                 return 0;
 165
 166         ret = enic_alloc_intr_resources(enic);
 167         if (ret) {
 168                 dev_err(enic, "alloc intr failed\n");
 169                 return ret;
 170         }
 171         enic_init_vnic_resources(enic);
 172
 173         ret = enic_setup_finish(enic);
 174         if (ret)
 175                 dev_err(enic, "setup could not be finished\n");
 176
 177         return ret;
 178 }
 179
 180 static int enicpmd_dev_tx_queue_setup(struct rte_eth_dev *eth_dev,
 181         uint16_t queue_idx,
 182         uint16_t nb_desc,
 183         unsigned int socket_id,
 184         __rte_unused const struct rte_eth_txconf *tx_conf)
 185 {
 186         int ret;
 187         struct enic *enic = pmd_priv(eth_dev);
 188
 189         ENICPMD_FUNC_TRACE();
 190         RTE_ASSERT(queue_idx < enic->conf_wq_count);
 191         eth_dev->data->tx_queues[queue_idx] = (void *)&enic->wq[queue_idx];
 192
 193         ret = enic_alloc_wq(enic, queue_idx, socket_id, nb_desc);
 194         if (ret) {
 195                 dev_err(enic, "error in allocating wq\n");
 196                 return ret;
 197         }
 198
 199         return enicpmd_dev_setup_intr(enic);
 200 }
 201
 202 static int enicpmd_dev_tx_queue_start(struct rte_eth_dev *eth_dev,
 203         uint16_t queue_idx)
 204 {
 205         struct enic *enic = pmd_priv(eth_dev);
 206
 207         ENICPMD_FUNC_TRACE();
 208
 209         enic_start_wq(enic, queue_idx);
 210
 211         return 0;
 212 }
 213
 214 static int enicpmd_dev_tx_queue_stop(struct rte_eth_dev *eth_dev,
 215         uint16_t queue_idx)
 216 {
 217         int ret;
 218         struct enic *enic = pmd_priv(eth_dev);
 219
 220         ENICPMD_FUNC_TRACE();
 221
 222         ret = enic_stop_wq(enic, queue_idx);
 223         if (ret)
 224                 dev_err(enic, "error in stopping wq %d\n", queue_idx);
 225
 226         return ret;
 227 }
 228
 229 static int enicpmd_dev_rx_queue_start(struct rte_eth_dev *eth_dev,
 230         uint16_t queue_idx)
 231 {
 232         struct enic *enic = pmd_priv(eth_dev);
 233
 234         ENICPMD_FUNC_TRACE();
 235
 236         enic_start_rq(enic, queue_idx);
 237
 238         return 0;
 239 }
 240
 241 static int enicpmd_dev_rx_queue_stop(struct rte_eth_dev *eth_dev,
 242         uint16_t queue_idx)
 243 {
 244         int ret;
 245         struct enic *enic = pmd_priv(eth_dev);
 246
 247         ENICPMD_FUNC_TRACE();
 248
 249         ret = enic_stop_rq(enic, queue_idx);
 250         if (ret)
 251                 dev_err(enic, "error in stopping rq %d\n", queue_idx);
 252
 253         return ret;
 254 }
 255
 256 static void enicpmd_dev_rx_queue_release(void *rxq)
 257 {
 258         ENICPMD_FUNC_TRACE();
 259         enic_free_rq(rxq);
 260 }
 261
 262 static uint32_t enicpmd_dev_rx_queue_count(struct rte_eth_dev *dev,
 263                                            uint16_t rx_queue_id)
 264 {
 265         struct enic *enic = pmd_priv(dev);
 266         uint32_t queue_count = 0;
 267         struct vnic_cq *cq;
 268         uint32_t cq_tail;
 269         uint16_t cq_idx;
 270         int rq_num;
 271
 272         if (rx_queue_id >= dev->data->nb_rx_queues) {
 273                 dev_err(enic, "Invalid RX queue id=%d", rx_queue_id);
 274                 return 0;
 275         }
 276
 277         rq_num = enic_rte_rq_idx_to_sop_idx(rx_queue_id);
 278         cq = &enic->cq[enic_cq_rq(enic, rq_num)];
 279         cq_idx = cq->to_clean;
 280
 281         cq_tail = ioread32(&cq->ctrl->cq_tail);
 282
 283         if (cq_tail < cq_idx)
 284                 cq_tail += cq->ring.desc_count;
 285
 286         queue_count = cq_tail - cq_idx;
 287
 288         return queue_count;
 289 }
 290
 291 static int enicpmd_dev_rx_queue_setup(struct rte_eth_dev *eth_dev,
 292         uint16_t queue_idx,
 293         uint16_t nb_desc,
 294         unsigned int socket_id,
 295         const struct rte_eth_rxconf *rx_conf,
 296         struct rte_mempool *mp)
 297 {
 298         int ret;
 299         struct enic *enic = pmd_priv(eth_dev);
 300
 301         ENICPMD_FUNC_TRACE();
 302
 303         RTE_ASSERT(enic_rte_rq_idx_to_sop_idx(queue_idx) < enic->conf_rq_count);
 304         eth_dev->data->rx_queues[queue_idx] =
 305                 (void *)&enic->rq[enic_rte_rq_idx_to_sop_idx(queue_idx)];
 306
 307         ret = enic_alloc_rq(enic, queue_idx, socket_id, mp, nb_desc,
 308                             rx_conf->rx_free_thresh);
 309         if (ret) {
 310                 dev_err(enic, "error in allocating rq\n");
 311                 return ret;
 312         }
 313
 314         return enicpmd_dev_setup_intr(enic);
 315 }
 316
 317 static int enicpmd_vlan_filter_set(struct rte_eth_dev *eth_dev,
 318         uint16_t vlan_id, int on)
 319 {
 320         struct enic *enic = pmd_priv(eth_dev);
 321         int err;
 322
 323         ENICPMD_FUNC_TRACE();
 324         if (on)
 325                 err = enic_add_vlan(enic, vlan_id);
 326         else
 327                 err = enic_del_vlan(enic, vlan_id);
 328         return err;
 329 }
 330
 331 static void enicpmd_vlan_offload_set(struct rte_eth_dev *eth_dev, int mask)
 332 {
 333         struct enic *enic = pmd_priv(eth_dev);
 334
 335         ENICPMD_FUNC_TRACE();
 336
 337         if (mask & ETH_VLAN_STRIP_MASK) {
 338                 if (eth_dev->data->dev_conf.rxmode.hw_vlan_strip)
 339                         enic->ig_vlan_strip_en = 1;
 340                 else
 341                         enic->ig_vlan_strip_en = 0;
 342         }
 343         enic_set_rss_nic_cfg(enic);
 344
 345
 346         if (mask & ETH_VLAN_FILTER_MASK) {
 347                 dev_warning(enic,
 348                         "Configuration of VLAN filter is not supported\n");
 349         }
 350
 351         if (mask & ETH_VLAN_EXTEND_MASK) {
 352                 dev_warning(enic,
 353                         "Configuration of extended VLAN is not supported\n");
 354         }
 355 }
 356
 357 static int enicpmd_dev_configure(struct rte_eth_dev *eth_dev)
 358 {
 359         int ret;
 360         struct enic *enic = pmd_priv(eth_dev);
 361
 362         ENICPMD_FUNC_TRACE();
 363         ret = enic_set_vnic_res(enic);
 364         if (ret) {
 365                 dev_err(enic, "Set vNIC resource num  failed, aborting\n");
 366                 return ret;
 367         }
 368
 369         if (eth_dev->data->dev_conf.rxmode.split_hdr_size &&
 370                 eth_dev->data->dev_conf.rxmode.header_split) {
 371                 /* Enable header-data-split */
 372                 enic_set_hdr_split_size(enic,
 373                         eth_dev->data->dev_conf.rxmode.split_hdr_size);
 374         }
 375
 376         enicpmd_vlan_offload_set(eth_dev, ETH_VLAN_STRIP_MASK);
 377         enic->hw_ip_checksum = eth_dev->data->dev_conf.rxmode.hw_ip_checksum;
 378         return 0;
 379 }
 380
 381 /* Start the device.
 382  * It returns 0 on success.
 383  */
 384 static int enicpmd_dev_start(struct rte_eth_dev *eth_dev)
 385 {
 386         struct enic *enic = pmd_priv(eth_dev);
 387
 388         ENICPMD_FUNC_TRACE();
 389         return enic_enable(enic);
 390 }
 391
 392 /*
 393  * Stop device: disable rx and tx functions to allow for reconfiguring.
 394  */
 395 static void enicpmd_dev_stop(struct rte_eth_dev *eth_dev)
 396 {
 397         struct rte_eth_link link;
 398         struct enic *enic = pmd_priv(eth_dev);
 399
 400         ENICPMD_FUNC_TRACE();
 401         enic_disable(enic);
 402         memset(&link, 0, sizeof(link));
 403         rte_atomic64_cmpset((uint64_t *)&eth_dev->data->dev_link,
 404                 *(uint64_t *)&eth_dev->data->dev_link,
 405                 *(uint64_t *)&link);
 406 }
 407
 408 /*
 409  * Stop device.
 410  */
 411 static void enicpmd_dev_close(struct rte_eth_dev *eth_dev)
 412 {
 413         struct enic *enic = pmd_priv(eth_dev);
 414
 415         ENICPMD_FUNC_TRACE();
 416         enic_remove(enic);
 417 }
 418
 419 static int enicpmd_dev_link_update(struct rte_eth_dev *eth_dev,
 420         __rte_unused int wait_to_complete)
 421 {
 422         struct enic *enic = pmd_priv(eth_dev);
 423
 424         ENICPMD_FUNC_TRACE();
 425         return enic_link_update(enic);
 426 }
 427
 428 static void enicpmd_dev_stats_get(struct rte_eth_dev *eth_dev,
 429         struct rte_eth_stats *stats)
 430 {
 431         struct enic *enic = pmd_priv(eth_dev);
 432
 433         ENICPMD_FUNC_TRACE();
 434         enic_dev_stats_get(enic, stats);
 435 }
 436
 437 static void enicpmd_dev_stats_reset(struct rte_eth_dev *eth_dev)
 438 {
 439         struct enic *enic = pmd_priv(eth_dev);
 440
 441         ENICPMD_FUNC_TRACE();
 442         enic_dev_stats_clear(enic);
 443 }
 444
 445 static void enicpmd_dev_info_get(struct rte_eth_dev *eth_dev,
 446         struct rte_eth_dev_info *device_info)
 447 {
 448         struct enic *enic = pmd_priv(eth_dev);
 449
 450         ENICPMD_FUNC_TRACE();
 451         /* Scattered Rx uses two receive queues per rx queue exposed to dpdk */
 452         device_info->max_rx_queues = enic->conf_rq_count / 2;
 453         device_info->max_tx_queues = enic->conf_wq_count;
 454         device_info->min_rx_bufsize = ENIC_MIN_MTU;
 455         device_info->max_rx_pktlen = enic->max_mtu + ETHER_HDR_LEN + 4;
 456         device_info->max_mac_addrs = 1;
 457         device_info->rx_offload_capa =
 458                 DEV_RX_OFFLOAD_VLAN_STRIP |
 459                 DEV_RX_OFFLOAD_IPV4_CKSUM |
 460                 DEV_RX_OFFLOAD_UDP_CKSUM  |
 461                 DEV_RX_OFFLOAD_TCP_CKSUM;
 462         device_info->tx_offload_capa =
 463                 DEV_TX_OFFLOAD_VLAN_INSERT |
 464                 DEV_TX_OFFLOAD_IPV4_CKSUM  |
 465                 DEV_TX_OFFLOAD_UDP_CKSUM   |
 466                 DEV_TX_OFFLOAD_TCP_CKSUM;
 467         device_info->default_rxconf = (struct rte_eth_rxconf) {
 468                 .rx_free_thresh = ENIC_DEFAULT_RX_FREE_THRESH
 469         };
 470 }
 471
 472 static const uint32_t *enicpmd_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 473 {
 474         static const uint32_t ptypes[] = {
 475                 RTE_PTYPE_L2_ETHER,
 476                 RTE_PTYPE_L2_ETHER_VLAN,
 477                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 478                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 479                 RTE_PTYPE_L4_TCP,
 480                 RTE_PTYPE_L4_UDP,
 481                 RTE_PTYPE_L4_FRAG,
 482                 RTE_PTYPE_L4_NONFRAG,
 483                 RTE_PTYPE_UNKNOWN
 484         };
 485
 486         if (dev->rx_pkt_burst == enic_recv_pkts)
 487                 return ptypes;
 488         return NULL;
 489 }
 490
 491 static void enicpmd_dev_promiscuous_enable(struct rte_eth_dev *eth_dev)
 492 {
 493         struct enic *enic = pmd_priv(eth_dev);
 494
 495         ENICPMD_FUNC_TRACE();
 496         enic->promisc = 1;
 497         enic_add_packet_filter(enic);
 498 }
 499
 500 static void enicpmd_dev_promiscuous_disable(struct rte_eth_dev *eth_dev)
 501 {
 502         struct enic *enic = pmd_priv(eth_dev);
 503
 504         ENICPMD_FUNC_TRACE();
 505         enic->promisc = 0;
 506         enic_add_packet_filter(enic);
 507 }
 508
 509 static void enicpmd_dev_allmulticast_enable(struct rte_eth_dev *eth_dev)
 510 {
 511         struct enic *enic = pmd_priv(eth_dev);
 512
 513         ENICPMD_FUNC_TRACE();
 514         enic->allmulti = 1;
 515         enic_add_packet_filter(enic);
 516 }
 517
 518 static void enicpmd_dev_allmulticast_disable(struct rte_eth_dev *eth_dev)
 519 {
 520         struct enic *enic = pmd_priv(eth_dev);
 521
 522         ENICPMD_FUNC_TRACE();
 523         enic->allmulti = 0;
 524         enic_add_packet_filter(enic);
 525 }
 526
 527 static void enicpmd_add_mac_addr(struct rte_eth_dev *eth_dev,
 528         struct ether_addr *mac_addr,
 529         __rte_unused uint32_t index, __rte_unused uint32_t pool)
 530 {
 531         struct enic *enic = pmd_priv(eth_dev);
 532
 533         ENICPMD_FUNC_TRACE();
 534         enic_set_mac_address(enic, mac_addr->addr_bytes);
 535 }
 536
 537 static void enicpmd_remove_mac_addr(struct rte_eth_dev *eth_dev, __rte_unused uint32_t index)
 538 {
 539         struct enic *enic = pmd_priv(eth_dev);
 540
 541         ENICPMD_FUNC_TRACE();
 542         enic_del_mac_address(enic);
 543 }
 544
 545 static int enicpmd_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu)
 546 {
 547         struct enic *enic = pmd_priv(eth_dev);
 548
 549         ENICPMD_FUNC_TRACE();
 550         return enic_set_mtu(enic, mtu);
 551 }
 552
 553 static const struct eth_dev_ops enicpmd_eth_dev_ops = {
 554         .dev_configure        = enicpmd_dev_configure,
 555         .dev_start            = enicpmd_dev_start,
 556         .dev_stop             = enicpmd_dev_stop,
 557         .dev_set_link_up      = NULL,
 558         .dev_set_link_down    = NULL,
 559         .dev_close            = enicpmd_dev_close,
 560         .promiscuous_enable   = enicpmd_dev_promiscuous_enable,
 561         .promiscuous_disable  = enicpmd_dev_promiscuous_disable,
 562         .allmulticast_enable  = enicpmd_dev_allmulticast_enable,
 563         .allmulticast_disable = enicpmd_dev_allmulticast_disable,
 564         .link_update          = enicpmd_dev_link_update,
 565         .stats_get            = enicpmd_dev_stats_get,
 566         .stats_reset          = enicpmd_dev_stats_reset,
 567         .queue_stats_mapping_set = NULL,
 568         .dev_infos_get        = enicpmd_dev_info_get,
 569         .dev_supported_ptypes_get = enicpmd_dev_supported_ptypes_get,
 570         .mtu_set              = enicpmd_mtu_set,
 571         .vlan_filter_set      = enicpmd_vlan_filter_set,
 572         .vlan_tpid_set        = NULL,
 573         .vlan_offload_set     = enicpmd_vlan_offload_set,
 574         .vlan_strip_queue_set = NULL,
 575         .rx_queue_start       = enicpmd_dev_rx_queue_start,
 576         .rx_queue_stop        = enicpmd_dev_rx_queue_stop,
 577         .tx_queue_start       = enicpmd_dev_tx_queue_start,
 578         .tx_queue_stop        = enicpmd_dev_tx_queue_stop,
 579         .rx_queue_setup       = enicpmd_dev_rx_queue_setup,
 580         .rx_queue_release     = enicpmd_dev_rx_queue_release,
 581         .rx_queue_count       = enicpmd_dev_rx_queue_count,
 582         .rx_descriptor_done   = NULL,
 583         .tx_queue_setup       = enicpmd_dev_tx_queue_setup,
 584         .tx_queue_release     = enicpmd_dev_tx_queue_release,
 585         .dev_led_on           = NULL,
 586         .dev_led_off          = NULL,
 587         .flow_ctrl_get        = NULL,
 588         .flow_ctrl_set        = NULL,
 589         .priority_flow_ctrl_set = NULL,
 590         .mac_addr_add         = enicpmd_add_mac_addr,
 591         .mac_addr_remove      = enicpmd_remove_mac_addr,
 592         .filter_ctrl          = enicpmd_dev_filter_ctrl,
 593 };
 594
 595 static int enic_parse_ig_vlan_rewrite(__rte_unused const char *key,
 596                                       const char *value,
 597                                       void *opaque)
 598 {
 599         struct enic *enic;
 600
 601         enic = (struct enic *)opaque;
 602         if (strcmp(value, "trunk") == 0) {
 603                 /* Trunk mode: always tag */
 604                 enic->ig_vlan_rewrite_mode = IG_VLAN_REWRITE_MODE_DEFAULT_TRUNK;
 605         } else if (strcmp(value, "untag") == 0) {
 606                 /* Untag default VLAN mode: untag if VLAN = default VLAN */
 607                 enic->ig_vlan_rewrite_mode =
 608                         IG_VLAN_REWRITE_MODE_UNTAG_DEFAULT_VLAN;
 609         } else if (strcmp(value, "priority") == 0) {
 610                 /*
 611                  * Priority-tag default VLAN mode: priority tag (VLAN header
 612                  * with ID=0) if VLAN = default
 613                  */
 614                 enic->ig_vlan_rewrite_mode =
 615                         IG_VLAN_REWRITE_MODE_PRIORITY_TAG_DEFAULT_VLAN;
 616         } else if (strcmp(value, "pass") == 0) {
 617                 /* Pass through mode: do not touch tags */
 618                 enic->ig_vlan_rewrite_mode = IG_VLAN_REWRITE_MODE_PASS_THRU;
 619         } else {
 620                 dev_err(enic, "Invalid value for " ENIC_DEVARG_IG_VLAN_REWRITE
 621                         ": expected=trunk|untag|priority|pass given=%s\n",
 622                         value);
 623                 return -EINVAL;
 624         }
 625         return 0;
 626 }
 627
 628 static int enic_check_devargs(struct rte_eth_dev *dev)
 629 {
 630         static const char *valid_keys[] = {
 631                 ENIC_DEVARG_IG_VLAN_REWRITE,
 632                 NULL};
 633         struct enic *enic = pmd_priv(dev);
 634         struct rte_kvargs *kvlist;
 635
 636         ENICPMD_FUNC_TRACE();
 637
 638         enic->ig_vlan_rewrite_mode = IG_VLAN_REWRITE_MODE_PASS_THRU;
 639         if (!dev->pci_dev->device.devargs)
 640                 return 0;
 641         kvlist = rte_kvargs_parse(dev->pci_dev->device.devargs->args, valid_keys);
 642         if (!kvlist)
 643                 return -EINVAL;
 644         if (rte_kvargs_process(kvlist, ENIC_DEVARG_IG_VLAN_REWRITE,
 645                                enic_parse_ig_vlan_rewrite, enic) < 0) {
 646                 rte_kvargs_free(kvlist);
 647                 return -EINVAL;
 648         }
 649         rte_kvargs_free(kvlist);
 650         return 0;
 651 }
 652
 653 /* Initialize the driver
 654  * It returns 0 on success.
 655  */
 656 static int eth_enicpmd_dev_init(struct rte_eth_dev *eth_dev)
 657 {
 658         struct rte_pci_device *pdev;
 659         struct rte_pci_addr *addr;
 660         struct enic *enic = pmd_priv(eth_dev);
 661         int err;
 662
 663         ENICPMD_FUNC_TRACE();
 664
 665         enic->port_id = eth_dev->data->port_id;
 666         enic->rte_dev = eth_dev;
 667         eth_dev->dev_ops = &enicpmd_eth_dev_ops;
 668         eth_dev->rx_pkt_burst = &enic_recv_pkts;
 669         eth_dev->tx_pkt_burst = &enic_xmit_pkts;
 670
 671         pdev = eth_dev->pci_dev;
 672         rte_eth_copy_pci_info(eth_dev, pdev);
 673         enic->pdev = pdev;
 674         addr = &pdev->addr;
 675
 676         snprintf(enic->bdf_name, ENICPMD_BDF_LENGTH, "%04x:%02x:%02x.%x",
 677                 addr->domain, addr->bus, addr->devid, addr->function);
 678
 679         err = enic_check_devargs(eth_dev);
 680         if (err)
 681                 return err;
 682         return enic_probe(enic);
 683 }
 684
 685 static struct eth_driver rte_enic_pmd = {
 686         .pci_drv = {
 687                 .id_table = pci_id_enic_map,
 688                 .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC,
 689                 .probe = rte_eth_dev_pci_probe,
 690                 .remove = rte_eth_dev_pci_remove,
 691         },
 692         .eth_dev_init = eth_enicpmd_dev_init,
 693         .dev_private_size = sizeof(struct enic),
 694 };
 695
 696 RTE_PMD_REGISTER_PCI(net_enic, rte_enic_pmd.pci_drv);
 697 RTE_PMD_REGISTER_PCI_TABLE(net_enic, pci_id_enic_map);
 698 RTE_PMD_REGISTER_PARAM_STRING(net_enic,
 699         ENIC_DEVARG_IG_VLAN_REWRITE "=trunk|untag|priority|pass");