drivers/net/enic/enic_main.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
  37 #include <sys/stat.h>
  38 #include <sys/mman.h>
  39 #include <fcntl.h>
  40 #include <libgen.h>
  41
  42 #include <rte_pci.h>
  43 #include <rte_memzone.h>
  44 #include <rte_malloc.h>
  45 #include <rte_mbuf.h>
  46 #include <rte_string_fns.h>
  47 #include <rte_ethdev.h>
  48
  49 #include "enic_compat.h"
  50 #include "enic.h"
  51 #include "wq_enet_desc.h"
  52 #include "rq_enet_desc.h"
  53 #include "cq_enet_desc.h"
  54 #include "vnic_enet.h"
  55 #include "vnic_dev.h"
  56 #include "vnic_wq.h"
  57 #include "vnic_rq.h"
  58 #include "vnic_cq.h"
  59 #include "vnic_intr.h"
  60 #include "vnic_nic.h"
  61
  62 static inline int enic_is_sriov_vf(struct enic *enic)
  63 {
  64         return enic->pdev->id.device_id == PCI_DEVICE_ID_CISCO_VIC_ENET_VF;
  65 }
  66
  67 static int is_zero_addr(uint8_t *addr)
  68 {
  69         return !(addr[0] |  addr[1] | addr[2] | addr[3] | addr[4] | addr[5]);
  70 }
  71
  72 static int is_mcast_addr(uint8_t *addr)
  73 {
  74         return addr[0] & 1;
  75 }
  76
  77 static int is_eth_addr_valid(uint8_t *addr)
  78 {
  79         return !is_mcast_addr(addr) && !is_zero_addr(addr);
  80 }
  81
  82 static void
  83 enic_rxmbuf_queue_release(__rte_unused struct enic *enic, struct vnic_rq *rq)
  84 {
  85         uint16_t i;
  86
  87         if (!rq || !rq->mbuf_ring) {
  88                 dev_debug(enic, "Pointer to rq or mbuf_ring is NULL");
  89                 return;
  90         }
  91
  92         for (i = 0; i < rq->ring.desc_count; i++) {
  93                 if (rq->mbuf_ring[i]) {
  94                         rte_pktmbuf_free_seg(rq->mbuf_ring[i]);
  95                         rq->mbuf_ring[i] = NULL;
  96                 }
  97         }
  98 }
  99
 100 void enic_set_hdr_split_size(struct enic *enic, u16 split_hdr_size)
 101 {
 102         vnic_set_hdr_split_size(enic->vdev, split_hdr_size);
 103 }
 104
 105 static void enic_free_wq_buf(struct vnic_wq_buf *buf)
 106 {
 107         struct rte_mbuf *mbuf = (struct rte_mbuf *)buf->mb;
 108
 109         rte_pktmbuf_free_seg(mbuf);
 110         buf->mb = NULL;
 111 }
 112
 113 static void enic_log_q_error(struct enic *enic)
 114 {
 115         unsigned int i;
 116         u32 error_status;
 117
 118         for (i = 0; i < enic->wq_count; i++) {
 119                 error_status = vnic_wq_error_status(&enic->wq[i]);
 120                 if (error_status)
 121                         dev_err(enic, "WQ[%d] error_status %d\n", i,
 122                                 error_status);
 123         }
 124
 125         for (i = 0; i < enic_vnic_rq_count(enic); i++) {
 126                 if (!enic->rq[i].in_use)
 127                         continue;
 128                 error_status = vnic_rq_error_status(&enic->rq[i]);
 129                 if (error_status)
 130                         dev_err(enic, "RQ[%d] error_status %d\n", i,
 131                                 error_status);
 132         }
 133 }
 134
 135 static void enic_clear_soft_stats(struct enic *enic)
 136 {
 137         struct enic_soft_stats *soft_stats = &enic->soft_stats;
 138         rte_atomic64_clear(&soft_stats->rx_nombuf);
 139         rte_atomic64_clear(&soft_stats->rx_packet_errors);
 140 }
 141
 142 static void enic_init_soft_stats(struct enic *enic)
 143 {
 144         struct enic_soft_stats *soft_stats = &enic->soft_stats;
 145         rte_atomic64_init(&soft_stats->rx_nombuf);
 146         rte_atomic64_init(&soft_stats->rx_packet_errors);
 147         enic_clear_soft_stats(enic);
 148 }
 149
 150 void enic_dev_stats_clear(struct enic *enic)
 151 {
 152         if (vnic_dev_stats_clear(enic->vdev))
 153                 dev_err(enic, "Error in clearing stats\n");
 154         enic_clear_soft_stats(enic);
 155 }
 156
 157 void enic_dev_stats_get(struct enic *enic, struct rte_eth_stats *r_stats)
 158 {
 159         struct vnic_stats *stats;
 160         struct enic_soft_stats *soft_stats = &enic->soft_stats;
 161         int64_t rx_truncated;
 162         uint64_t rx_packet_errors;
 163
 164         if (vnic_dev_stats_dump(enic->vdev, &stats)) {
 165                 dev_err(enic, "Error in getting stats\n");
 166                 return;
 167         }
 168
 169         /* The number of truncated packets can only be calculated by
 170          * subtracting a hardware counter from error packets received by
 171          * the driver. Note: this causes transient inaccuracies in the
 172          * ipackets count. Also, the length of truncated packets are
 173          * counted in ibytes even though truncated packets are dropped
 174          * which can make ibytes be slightly higher than it should be.
 175          */
 176         rx_packet_errors = rte_atomic64_read(&soft_stats->rx_packet_errors);
 177         rx_truncated = rx_packet_errors - stats->rx.rx_errors;
 178
 179         r_stats->ipackets = stats->rx.rx_frames_ok - rx_truncated;
 180         r_stats->opackets = stats->tx.tx_frames_ok;
 181
 182         r_stats->ibytes = stats->rx.rx_bytes_ok;
 183         r_stats->obytes = stats->tx.tx_bytes_ok;
 184
 185         r_stats->ierrors = stats->rx.rx_errors + stats->rx.rx_drop;
 186         r_stats->oerrors = stats->tx.tx_errors;
 187
 188         r_stats->imissed = stats->rx.rx_no_bufs + rx_truncated;
 189
 190         r_stats->rx_nombuf = rte_atomic64_read(&soft_stats->rx_nombuf);
 191 }
 192
 193 void enic_del_mac_address(struct enic *enic)
 194 {
 195         if (vnic_dev_del_addr(enic->vdev, enic->mac_addr))
 196                 dev_err(enic, "del mac addr failed\n");
 197 }
 198
 199 void enic_set_mac_address(struct enic *enic, uint8_t *mac_addr)
 200 {
 201         int err;
 202
 203         if (!is_eth_addr_valid(mac_addr)) {
 204                 dev_err(enic, "invalid mac address\n");
 205                 return;
 206         }
 207
 208         err = vnic_dev_del_addr(enic->vdev, enic->mac_addr);
 209         if (err) {
 210                 dev_err(enic, "del mac addr failed\n");
 211                 return;
 212         }
 213
 214         ether_addr_copy((struct ether_addr *)mac_addr,
 215                 (struct ether_addr *)enic->mac_addr);
 216
 217         err = vnic_dev_add_addr(enic->vdev, mac_addr);
 218         if (err) {
 219                 dev_err(enic, "add mac addr failed\n");
 220                 return;
 221         }
 222 }
 223
 224 static void
 225 enic_free_rq_buf(struct rte_mbuf **mbuf)
 226 {
 227         if (*mbuf == NULL)
 228                 return;
 229
 230         rte_pktmbuf_free(*mbuf);
 231         mbuf = NULL;
 232 }
 233
 234 void enic_init_vnic_resources(struct enic *enic)
 235 {
 236         unsigned int error_interrupt_enable = 1;
 237         unsigned int error_interrupt_offset = 0;
 238         unsigned int index = 0;
 239         unsigned int cq_idx;
 240         struct vnic_rq *data_rq;
 241
 242         for (index = 0; index < enic->rq_count; index++) {
 243                 cq_idx = enic_cq_rq(enic, enic_sop_rq(index));
 244
 245                 vnic_rq_init(&enic->rq[enic_sop_rq(index)],
 246                         cq_idx,
 247                         error_interrupt_enable,
 248                         error_interrupt_offset);
 249
 250                 data_rq = &enic->rq[enic_data_rq(index)];
 251                 if (data_rq->in_use)
 252                         vnic_rq_init(data_rq,
 253                                      cq_idx,
 254                                      error_interrupt_enable,
 255                                      error_interrupt_offset);
 256
 257                 vnic_cq_init(&enic->cq[cq_idx],
 258                         0 /* flow_control_enable */,
 259                         1 /* color_enable */,
 260                         0 /* cq_head */,
 261                         0 /* cq_tail */,
 262                         1 /* cq_tail_color */,
 263                         0 /* interrupt_enable */,
 264                         1 /* cq_entry_enable */,
 265                         0 /* cq_message_enable */,
 266                         0 /* interrupt offset */,
 267                         0 /* cq_message_addr */);
 268         }
 269
 270         for (index = 0; index < enic->wq_count; index++) {
 271                 vnic_wq_init(&enic->wq[index],
 272                         enic_cq_wq(enic, index),
 273                         error_interrupt_enable,
 274                         error_interrupt_offset);
 275
 276                 cq_idx = enic_cq_wq(enic, index);
 277                 vnic_cq_init(&enic->cq[cq_idx],
 278                         0 /* flow_control_enable */,
 279                         1 /* color_enable */,
 280                         0 /* cq_head */,
 281                         0 /* cq_tail */,
 282                         1 /* cq_tail_color */,
 283                         0 /* interrupt_enable */,
 284                         0 /* cq_entry_enable */,
 285                         1 /* cq_message_enable */,
 286                         0 /* interrupt offset */,
 287                         (u64)enic->wq[index].cqmsg_rz->phys_addr);
 288         }
 289
 290         vnic_intr_init(&enic->intr,
 291                 enic->config.intr_timer_usec,
 292                 enic->config.intr_timer_type,
 293                 /*mask_on_assertion*/1);
 294 }
 295
 296
 297 static int
 298 enic_alloc_rx_queue_mbufs(struct enic *enic, struct vnic_rq *rq)
 299 {
 300         struct rte_mbuf *mb;
 301         struct rq_enet_desc *rqd = rq->ring.descs;
 302         unsigned i;
 303         dma_addr_t dma_addr;
 304
 305         if (!rq->in_use)
 306                 return 0;
 307
 308         dev_debug(enic, "queue %u, allocating %u rx queue mbufs\n", rq->index,
 309                   rq->ring.desc_count);
 310
 311         for (i = 0; i < rq->ring.desc_count; i++, rqd++) {
 312                 mb = rte_mbuf_raw_alloc(rq->mp);
 313                 if (mb == NULL) {
 314                         dev_err(enic, "RX mbuf alloc failed queue_id=%u\n",
 315                         (unsigned)rq->index);
 316                         return -ENOMEM;
 317                 }
 318
 319                 mb->data_off = RTE_PKTMBUF_HEADROOM;
 320                 dma_addr = (dma_addr_t)(mb->buf_physaddr
 321                            + RTE_PKTMBUF_HEADROOM);
 322                 rq_enet_desc_enc(rqd, dma_addr,
 323                                 (rq->is_sop ? RQ_ENET_TYPE_ONLY_SOP
 324                                 : RQ_ENET_TYPE_NOT_SOP),
 325                                 mb->buf_len - RTE_PKTMBUF_HEADROOM);
 326                 rq->mbuf_ring[i] = mb;
 327         }
 328
 329         /* make sure all prior writes are complete before doing the PIO write */
 330         rte_rmb();
 331
 332         /* Post all but the last buffer to VIC. */
 333         rq->posted_index = rq->ring.desc_count - 1;
 334
 335         rq->rx_nb_hold = 0;
 336
 337         dev_debug(enic, "port=%u, qidx=%u, Write %u posted idx, %u sw held\n",
 338                 enic->port_id, rq->index, rq->posted_index, rq->rx_nb_hold);
 339         iowrite32(rq->posted_index, &rq->ctrl->posted_index);
 340         iowrite32(0, &rq->ctrl->fetch_index);
 341         rte_rmb();
 342
 343         return 0;
 344
 345 }
 346
 347 static void *
 348 enic_alloc_consistent(void *priv, size_t size,
 349         dma_addr_t *dma_handle, u8 *name)
 350 {
 351         void *vaddr;
 352         const struct rte_memzone *rz;
 353         *dma_handle = 0;
 354         struct enic *enic = (struct enic *)priv;
 355         struct enic_memzone_entry *mze;
 356
 357         rz = rte_memzone_reserve_aligned((const char *)name,
 358                                          size, SOCKET_ID_ANY, 0, ENIC_ALIGN);
 359         if (!rz) {
 360                 pr_err("%s : Failed to allocate memory requested for %s\n",
 361                         __func__, name);
 362                 return NULL;
 363         }
 364
 365         vaddr = rz->addr;
 366         *dma_handle = (dma_addr_t)rz->phys_addr;
 367
 368         mze = rte_malloc("enic memzone entry",
 369                          sizeof(struct enic_memzone_entry), 0);
 370
 371         if (!mze) {
 372                 pr_err("%s : Failed to allocate memory for memzone list\n",
 373                        __func__);
 374                 rte_memzone_free(rz);
 375         }
 376
 377         mze->rz = rz;
 378
 379         rte_spinlock_lock(&enic->memzone_list_lock);
 380         LIST_INSERT_HEAD(&enic->memzone_list, mze, entries);
 381         rte_spinlock_unlock(&enic->memzone_list_lock);
 382
 383         return vaddr;
 384 }
 385
 386 static void
 387 enic_free_consistent(void *priv,
 388                      __rte_unused size_t size,
 389                      void *vaddr,
 390                      dma_addr_t dma_handle)
 391 {
 392         struct enic_memzone_entry *mze;
 393         struct enic *enic = (struct enic *)priv;
 394
 395         rte_spinlock_lock(&enic->memzone_list_lock);
 396         LIST_FOREACH(mze, &enic->memzone_list, entries) {
 397                 if (mze->rz->addr == vaddr &&
 398                     mze->rz->phys_addr == dma_handle)
 399                         break;
 400         }
 401         if (mze == NULL) {
 402                 rte_spinlock_unlock(&enic->memzone_list_lock);
 403                 dev_warning(enic,
 404                             "Tried to free memory, but couldn't find it in the memzone list\n");
 405                 return;
 406         }
 407         LIST_REMOVE(mze, entries);
 408         rte_spinlock_unlock(&enic->memzone_list_lock);
 409         rte_memzone_free(mze->rz);
 410         rte_free(mze);
 411 }
 412
 413 static void
 414 enic_intr_handler(__rte_unused struct rte_intr_handle *handle,
 415         void *arg)
 416 {
 417         struct enic *enic = pmd_priv((struct rte_eth_dev *)arg);
 418
 419         vnic_intr_return_all_credits(&enic->intr);
 420
 421         enic_log_q_error(enic);
 422 }
 423
 424 int enic_enable(struct enic *enic)
 425 {
 426         unsigned int index;
 427         int err;
 428         struct rte_eth_dev *eth_dev = enic->rte_dev;
 429
 430         eth_dev->data->dev_link.link_speed = vnic_dev_port_speed(enic->vdev);
 431         eth_dev->data->dev_link.link_duplex = ETH_LINK_FULL_DUPLEX;
 432         vnic_dev_notify_set(enic->vdev, -1); /* No Intr for notify */
 433
 434         if (enic_clsf_init(enic))
 435                 dev_warning(enic, "Init of hash table for clsf failed."\
 436                         "Flow director feature will not work\n");
 437
 438         for (index = 0; index < enic->rq_count; index++) {
 439                 err = enic_alloc_rx_queue_mbufs(enic,
 440                         &enic->rq[enic_sop_rq(index)]);
 441                 if (err) {
 442                         dev_err(enic, "Failed to alloc sop RX queue mbufs\n");
 443                         return err;
 444                 }
 445                 err = enic_alloc_rx_queue_mbufs(enic,
 446                         &enic->rq[enic_data_rq(index)]);
 447                 if (err) {
 448                         /* release the allocated mbufs for the sop rq*/
 449                         enic_rxmbuf_queue_release(enic,
 450                                 &enic->rq[enic_sop_rq(index)]);
 451
 452                         dev_err(enic, "Failed to alloc data RX queue mbufs\n");
 453                         return err;
 454                 }
 455         }
 456
 457         for (index = 0; index < enic->wq_count; index++)
 458                 enic_start_wq(enic, index);
 459         for (index = 0; index < enic->rq_count; index++)
 460                 enic_start_rq(enic, index);
 461
 462         vnic_dev_add_addr(enic->vdev, enic->mac_addr);
 463
 464         vnic_dev_enable_wait(enic->vdev);
 465
 466         /* Register and enable error interrupt */
 467         rte_intr_callback_register(&(enic->pdev->intr_handle),
 468                 enic_intr_handler, (void *)enic->rte_dev);
 469
 470         rte_intr_enable(&(enic->pdev->intr_handle));
 471         vnic_intr_unmask(&enic->intr);
 472
 473         return 0;
 474 }
 475
 476 int enic_alloc_intr_resources(struct enic *enic)
 477 {
 478         int err;
 479
 480         dev_info(enic, "vNIC resources used:  "\
 481                 "wq %d rq %d cq %d intr %d\n",
 482                 enic->wq_count, enic_vnic_rq_count(enic),
 483                 enic->cq_count, enic->intr_count);
 484
 485         err = vnic_intr_alloc(enic->vdev, &enic->intr, 0);
 486         if (err)
 487                 enic_free_vnic_resources(enic);
 488
 489         return err;
 490 }
 491
 492 void enic_free_rq(void *rxq)
 493 {
 494         struct vnic_rq *rq_sop, *rq_data;
 495         struct enic *enic;
 496
 497         if (rxq == NULL)
 498                 return;
 499
 500         rq_sop = (struct vnic_rq *)rxq;
 501         enic = vnic_dev_priv(rq_sop->vdev);
 502         rq_data = &enic->rq[rq_sop->data_queue_idx];
 503
 504         enic_rxmbuf_queue_release(enic, rq_sop);
 505         if (rq_data->in_use)
 506                 enic_rxmbuf_queue_release(enic, rq_data);
 507
 508         rte_free(rq_sop->mbuf_ring);
 509         if (rq_data->in_use)
 510                 rte_free(rq_data->mbuf_ring);
 511
 512         rq_sop->mbuf_ring = NULL;
 513         rq_data->mbuf_ring = NULL;
 514
 515         vnic_rq_free(rq_sop);
 516         if (rq_data->in_use)
 517                 vnic_rq_free(rq_data);
 518
 519         vnic_cq_free(&enic->cq[enic_sop_rq_idx_to_cq_idx(rq_sop->index)]);
 520 }
 521
 522 void enic_start_wq(struct enic *enic, uint16_t queue_idx)
 523 {
 524         struct rte_eth_dev *eth_dev = enic->rte_dev;
 525         vnic_wq_enable(&enic->wq[queue_idx]);
 526         eth_dev->data->tx_queue_state[queue_idx] = RTE_ETH_QUEUE_STATE_STARTED;
 527 }
 528
 529 int enic_stop_wq(struct enic *enic, uint16_t queue_idx)
 530 {
 531         struct rte_eth_dev *eth_dev = enic->rte_dev;
 532         int ret;
 533
 534         ret = vnic_wq_disable(&enic->wq[queue_idx]);
 535         if (ret)
 536                 return ret;
 537
 538         eth_dev->data->tx_queue_state[queue_idx] = RTE_ETH_QUEUE_STATE_STOPPED;
 539         return 0;
 540 }
 541
 542 void enic_start_rq(struct enic *enic, uint16_t queue_idx)
 543 {
 544         struct vnic_rq *rq_sop = &enic->rq[enic_sop_rq(queue_idx)];
 545         struct vnic_rq *rq_data = &enic->rq[rq_sop->data_queue_idx];
 546         struct rte_eth_dev *eth_dev = enic->rte_dev;
 547
 548         if (rq_data->in_use)
 549                 vnic_rq_enable(rq_data);
 550         rte_mb();
 551         vnic_rq_enable(rq_sop);
 552         eth_dev->data->rx_queue_state[queue_idx] = RTE_ETH_QUEUE_STATE_STARTED;
 553 }
 554
 555 int enic_stop_rq(struct enic *enic, uint16_t queue_idx)
 556 {
 557         int ret1 = 0, ret2 = 0;
 558         struct rte_eth_dev *eth_dev = enic->rte_dev;
 559         struct vnic_rq *rq_sop = &enic->rq[enic_sop_rq(queue_idx)];
 560         struct vnic_rq *rq_data = &enic->rq[rq_sop->data_queue_idx];
 561
 562         ret2 = vnic_rq_disable(rq_sop);
 563         rte_mb();
 564         if (rq_data->in_use)
 565                 ret1 = vnic_rq_disable(rq_data);
 566
 567         if (ret2)
 568                 return ret2;
 569         else if (ret1)
 570                 return ret1;
 571
 572         eth_dev->data->rx_queue_state[queue_idx] = RTE_ETH_QUEUE_STATE_STOPPED;
 573         return 0;
 574 }
 575
 576 int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
 577         unsigned int socket_id, struct rte_mempool *mp,
 578         uint16_t nb_desc, uint16_t free_thresh)
 579 {
 580         int rc;
 581         uint16_t sop_queue_idx = enic_sop_rq(queue_idx);
 582         uint16_t data_queue_idx = enic_data_rq(queue_idx);
 583         struct vnic_rq *rq_sop = &enic->rq[sop_queue_idx];
 584         struct vnic_rq *rq_data = &enic->rq[data_queue_idx];
 585         unsigned int mbuf_size, mbufs_per_pkt;
 586         unsigned int nb_sop_desc, nb_data_desc;
 587         uint16_t min_sop, max_sop, min_data, max_data;
 588
 589         rq_sop->is_sop = 1;
 590         rq_sop->data_queue_idx = data_queue_idx;
 591         rq_data->is_sop = 0;
 592         rq_data->data_queue_idx = 0;
 593         rq_sop->socket_id = socket_id;
 594         rq_sop->mp = mp;
 595         rq_data->socket_id = socket_id;
 596         rq_data->mp = mp;
 597         rq_sop->in_use = 1;
 598         rq_sop->rx_free_thresh = free_thresh;
 599         rq_data->rx_free_thresh = free_thresh;
 600         dev_debug(enic, "Set queue_id:%u free thresh:%u\n", queue_idx,
 601                   free_thresh);
 602
 603         mbuf_size = (uint16_t)(rte_pktmbuf_data_room_size(mp) -
 604                                RTE_PKTMBUF_HEADROOM);
 605
 606         if (enic->rte_dev->data->dev_conf.rxmode.enable_scatter) {
 607                 dev_info(enic, "Scatter rx mode enabled\n");
 608                 /* ceil((mtu + ETHER_HDR_LEN + 4)/mbuf_size) */
 609                 mbufs_per_pkt = ((enic->config.mtu + ETHER_HDR_LEN + 4) +
 610                                  (mbuf_size - 1)) / mbuf_size;
 611         } else {
 612                 dev_info(enic, "Scatter rx mode disabled\n");
 613                 mbufs_per_pkt = 1;
 614         }
 615
 616         if (mbufs_per_pkt > 1) {
 617                 dev_info(enic, "Rq %u Scatter rx mode in use\n", queue_idx);
 618                 rq_sop->data_queue_enable = 1;
 619                 rq_data->in_use = 1;
 620         } else {
 621                 dev_info(enic, "Rq %u Scatter rx mode not being used\n",
 622                          queue_idx);
 623                 rq_sop->data_queue_enable = 0;
 624                 rq_data->in_use = 0;
 625         }
 626
 627         /* number of descriptors have to be a multiple of 32 */
 628         nb_sop_desc = (nb_desc / mbufs_per_pkt) & ~0x1F;
 629         nb_data_desc = (nb_desc - nb_sop_desc) & ~0x1F;
 630
 631         rq_sop->max_mbufs_per_pkt = mbufs_per_pkt;
 632         rq_data->max_mbufs_per_pkt = mbufs_per_pkt;
 633
 634         if (mbufs_per_pkt > 1) {
 635                 min_sop = 64;
 636                 max_sop = ((enic->config.rq_desc_count /
 637                             (mbufs_per_pkt - 1)) & ~0x1F);
 638                 min_data = min_sop * (mbufs_per_pkt - 1);
 639                 max_data = enic->config.rq_desc_count;
 640         } else {
 641                 min_sop = 64;
 642                 max_sop = enic->config.rq_desc_count;
 643                 min_data = 0;
 644                 max_data = 0;
 645         }
 646
 647         if (nb_desc < (min_sop + min_data)) {
 648                 dev_warning(enic,
 649                             "Number of rx descs too low, adjusting to minimum\n");
 650                 nb_sop_desc = min_sop;
 651                 nb_data_desc = min_data;
 652         } else if (nb_desc > (max_sop + max_data)) {
 653                 dev_warning(enic,
 654                             "Number of rx_descs too high, adjusting to maximum\n");
 655                 nb_sop_desc = max_sop;
 656                 nb_data_desc = max_data;
 657         }
 658         if (mbufs_per_pkt > 1) {
 659                 dev_info(enic, "For mtu %d and mbuf size %d valid rx descriptor range is %d to %d\n",
 660                          enic->config.mtu, mbuf_size, min_sop + min_data,
 661                          max_sop + max_data);
 662         }
 663         dev_info(enic, "Using %d rx descriptors (sop %d, data %d)\n",
 664                  nb_sop_desc + nb_data_desc, nb_sop_desc, nb_data_desc);
 665
 666         /* Allocate sop queue resources */
 667         rc = vnic_rq_alloc(enic->vdev, rq_sop, sop_queue_idx,
 668                 nb_sop_desc, sizeof(struct rq_enet_desc));
 669         if (rc) {
 670                 dev_err(enic, "error in allocation of sop rq\n");
 671                 goto err_exit;
 672         }
 673         nb_sop_desc = rq_sop->ring.desc_count;
 674
 675         if (rq_data->in_use) {
 676                 /* Allocate data queue resources */
 677                 rc = vnic_rq_alloc(enic->vdev, rq_data, data_queue_idx,
 678                                    nb_data_desc,
 679                                    sizeof(struct rq_enet_desc));
 680                 if (rc) {
 681                         dev_err(enic, "error in allocation of data rq\n");
 682                         goto err_free_rq_sop;
 683                 }
 684                 nb_data_desc = rq_data->ring.desc_count;
 685         }
 686         rc = vnic_cq_alloc(enic->vdev, &enic->cq[queue_idx], queue_idx,
 687                            socket_id, nb_sop_desc + nb_data_desc,
 688                            sizeof(struct cq_enet_rq_desc));
 689         if (rc) {
 690                 dev_err(enic, "error in allocation of cq for rq\n");
 691                 goto err_free_rq_data;
 692         }
 693
 694         /* Allocate the mbuf rings */
 695         rq_sop->mbuf_ring = (struct rte_mbuf **)
 696                 rte_zmalloc_socket("rq->mbuf_ring",
 697                                    sizeof(struct rte_mbuf *) * nb_sop_desc,
 698                                    RTE_CACHE_LINE_SIZE, rq_sop->socket_id);
 699         if (rq_sop->mbuf_ring == NULL)
 700                 goto err_free_cq;
 701
 702         if (rq_data->in_use) {
 703                 rq_data->mbuf_ring = (struct rte_mbuf **)
 704                         rte_zmalloc_socket("rq->mbuf_ring",
 705                                 sizeof(struct rte_mbuf *) * nb_data_desc,
 706                                 RTE_CACHE_LINE_SIZE, rq_sop->socket_id);
 707                 if (rq_data->mbuf_ring == NULL)
 708                         goto err_free_sop_mbuf;
 709         }
 710
 711         return 0;
 712
 713 err_free_sop_mbuf:
 714         rte_free(rq_sop->mbuf_ring);
 715 err_free_cq:
 716         /* cleanup on error */
 717         vnic_cq_free(&enic->cq[queue_idx]);
 718 err_free_rq_data:
 719         if (rq_data->in_use)
 720                 vnic_rq_free(rq_data);
 721 err_free_rq_sop:
 722         vnic_rq_free(rq_sop);
 723 err_exit:
 724         return -ENOMEM;
 725 }
 726
 727 void enic_free_wq(void *txq)
 728 {
 729         struct vnic_wq *wq;
 730         struct enic *enic;
 731
 732         if (txq == NULL)
 733                 return;
 734
 735         wq = (struct vnic_wq *)txq;
 736         enic = vnic_dev_priv(wq->vdev);
 737         rte_memzone_free(wq->cqmsg_rz);
 738         vnic_wq_free(wq);
 739         vnic_cq_free(&enic->cq[enic->rq_count + wq->index]);
 740 }
 741
 742 int enic_alloc_wq(struct enic *enic, uint16_t queue_idx,
 743         unsigned int socket_id, uint16_t nb_desc)
 744 {
 745         int err;
 746         struct vnic_wq *wq = &enic->wq[queue_idx];
 747         unsigned int cq_index = enic_cq_wq(enic, queue_idx);
 748         char name[NAME_MAX];
 749         static int instance;
 750
 751         wq->socket_id = socket_id;
 752         if (nb_desc) {
 753                 if (nb_desc > enic->config.wq_desc_count) {
 754                         dev_warning(enic,
 755                                 "WQ %d - number of tx desc in cmd line (%d)"\
 756                                 "is greater than that in the UCSM/CIMC adapter"\
 757                                 "policy.  Applying the value in the adapter "\
 758                                 "policy (%d)\n",
 759                                 queue_idx, nb_desc, enic->config.wq_desc_count);
 760                 } else if (nb_desc != enic->config.wq_desc_count) {
 761                         enic->config.wq_desc_count = nb_desc;
 762                         dev_info(enic,
 763                                 "TX Queues - effective number of descs:%d\n",
 764                                 nb_desc);
 765                 }
 766         }
 767
 768         /* Allocate queue resources */
 769         err = vnic_wq_alloc(enic->vdev, &enic->wq[queue_idx], queue_idx,
 770                 enic->config.wq_desc_count,
 771                 sizeof(struct wq_enet_desc));
 772         if (err) {
 773                 dev_err(enic, "error in allocation of wq\n");
 774                 return err;
 775         }
 776
 777         err = vnic_cq_alloc(enic->vdev, &enic->cq[cq_index], cq_index,
 778                 socket_id, enic->config.wq_desc_count,
 779                 sizeof(struct cq_enet_wq_desc));
 780         if (err) {
 781                 vnic_wq_free(wq);
 782                 dev_err(enic, "error in allocation of cq for wq\n");
 783         }
 784
 785         /* setup up CQ message */
 786         snprintf((char *)name, sizeof(name),
 787                  "vnic_cqmsg-%s-%d-%d", enic->bdf_name, queue_idx,
 788                 instance++);
 789
 790         wq->cqmsg_rz = rte_memzone_reserve_aligned((const char *)name,
 791                                                    sizeof(uint32_t),
 792                                                    SOCKET_ID_ANY, 0,
 793                                                    ENIC_ALIGN);
 794         if (!wq->cqmsg_rz)
 795                 return -ENOMEM;
 796
 797         return err;
 798 }
 799
 800 int enic_disable(struct enic *enic)
 801 {
 802         unsigned int i;
 803         int err;
 804
 805         vnic_intr_mask(&enic->intr);
 806         (void)vnic_intr_masked(&enic->intr); /* flush write */
 807
 808         vnic_dev_disable(enic->vdev);
 809
 810         enic_clsf_destroy(enic);
 811
 812         if (!enic_is_sriov_vf(enic))
 813                 vnic_dev_del_addr(enic->vdev, enic->mac_addr);
 814
 815         for (i = 0; i < enic->wq_count; i++) {
 816                 err = vnic_wq_disable(&enic->wq[i]);
 817                 if (err)
 818                         return err;
 819         }
 820         for (i = 0; i < enic_vnic_rq_count(enic); i++) {
 821                 if (enic->rq[i].in_use) {
 822                         err = vnic_rq_disable(&enic->rq[i]);
 823                         if (err)
 824                                 return err;
 825                 }
 826         }
 827
 828         vnic_dev_set_reset_flag(enic->vdev, 1);
 829         vnic_dev_notify_unset(enic->vdev);
 830
 831         for (i = 0; i < enic->wq_count; i++)
 832                 vnic_wq_clean(&enic->wq[i], enic_free_wq_buf);
 833
 834         for (i = 0; i < enic_vnic_rq_count(enic); i++)
 835                 if (enic->rq[i].in_use)
 836                         vnic_rq_clean(&enic->rq[i], enic_free_rq_buf);
 837         for (i = 0; i < enic->cq_count; i++)
 838                 vnic_cq_clean(&enic->cq[i]);
 839         vnic_intr_clean(&enic->intr);
 840
 841         return 0;
 842 }
 843
 844 static int enic_dev_wait(struct vnic_dev *vdev,
 845         int (*start)(struct vnic_dev *, int),
 846         int (*finished)(struct vnic_dev *, int *),
 847         int arg)
 848 {
 849         int done;
 850         int err;
 851         int i;
 852
 853         err = start(vdev, arg);
 854         if (err)
 855                 return err;
 856
 857         /* Wait for func to complete...2 seconds max */
 858         for (i = 0; i < 2000; i++) {
 859                 err = finished(vdev, &done);
 860                 if (err)
 861                         return err;
 862                 if (done)
 863                         return 0;
 864                 usleep(1000);
 865         }
 866         return -ETIMEDOUT;
 867 }
 868
 869 static int enic_dev_open(struct enic *enic)
 870 {
 871         int err;
 872
 873         err = enic_dev_wait(enic->vdev, vnic_dev_open,
 874                 vnic_dev_open_done, 0);
 875         if (err)
 876                 dev_err(enic_get_dev(enic),
 877                         "vNIC device open failed, err %d\n", err);
 878
 879         return err;
 880 }
 881
 882 static int enic_set_rsskey(struct enic *enic)
 883 {
 884         dma_addr_t rss_key_buf_pa;
 885         union vnic_rss_key *rss_key_buf_va = NULL;
 886         static union vnic_rss_key rss_key = {
 887                 .key = {
 888                         [0] = {.b = {85, 67, 83, 97, 119, 101, 115, 111, 109, 101}},
 889                         [1] = {.b = {80, 65, 76, 79, 117, 110, 105, 113, 117, 101}},
 890                         [2] = {.b = {76, 73, 78, 85, 88, 114, 111, 99, 107, 115}},
 891                         [3] = {.b = {69, 78, 73, 67, 105, 115, 99, 111, 111, 108}},
 892                 }
 893         };
 894         int err;
 895         u8 name[NAME_MAX];
 896
 897         snprintf((char *)name, NAME_MAX, "rss_key-%s", enic->bdf_name);
 898         rss_key_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_key),
 899                 &rss_key_buf_pa, name);
 900         if (!rss_key_buf_va)
 901                 return -ENOMEM;
 902
 903         rte_memcpy(rss_key_buf_va, &rss_key, sizeof(union vnic_rss_key));
 904
 905         err = enic_set_rss_key(enic,
 906                 rss_key_buf_pa,
 907                 sizeof(union vnic_rss_key));
 908
 909         enic_free_consistent(enic, sizeof(union vnic_rss_key),
 910                 rss_key_buf_va, rss_key_buf_pa);
 911
 912         return err;
 913 }
 914
 915 static int enic_set_rsscpu(struct enic *enic, u8 rss_hash_bits)
 916 {
 917         dma_addr_t rss_cpu_buf_pa;
 918         union vnic_rss_cpu *rss_cpu_buf_va = NULL;
 919         int i;
 920         int err;
 921         u8 name[NAME_MAX];
 922
 923         snprintf((char *)name, NAME_MAX, "rss_cpu-%s", enic->bdf_name);
 924         rss_cpu_buf_va = enic_alloc_consistent(enic, sizeof(union vnic_rss_cpu),
 925                 &rss_cpu_buf_pa, name);
 926         if (!rss_cpu_buf_va)
 927                 return -ENOMEM;
 928
 929         for (i = 0; i < (1 << rss_hash_bits); i++)
 930                 (*rss_cpu_buf_va).cpu[i / 4].b[i % 4] =
 931                         enic_sop_rq(i % enic->rq_count);
 932
 933         err = enic_set_rss_cpu(enic,
 934                 rss_cpu_buf_pa,
 935                 sizeof(union vnic_rss_cpu));
 936
 937         enic_free_consistent(enic, sizeof(union vnic_rss_cpu),
 938                 rss_cpu_buf_va, rss_cpu_buf_pa);
 939
 940         return err;
 941 }
 942
 943 static int enic_set_niccfg(struct enic *enic, u8 rss_default_cpu,
 944         u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu, u8 rss_enable)
 945 {
 946         const u8 tso_ipid_split_en = 0;
 947         int err;
 948
 949         /* Enable VLAN tag stripping */
 950
 951         err = enic_set_nic_cfg(enic,
 952                 rss_default_cpu, rss_hash_type,
 953                 rss_hash_bits, rss_base_cpu,
 954                 rss_enable, tso_ipid_split_en,
 955                 enic->ig_vlan_strip_en);
 956
 957         return err;
 958 }
 959
 960 int enic_set_rss_nic_cfg(struct enic *enic)
 961 {
 962         const u8 rss_default_cpu = 0;
 963         const u8 rss_hash_type = NIC_CFG_RSS_HASH_TYPE_IPV4 |
 964             NIC_CFG_RSS_HASH_TYPE_TCP_IPV4 |
 965             NIC_CFG_RSS_HASH_TYPE_IPV6 |
 966             NIC_CFG_RSS_HASH_TYPE_TCP_IPV6;
 967         const u8 rss_hash_bits = 7;
 968         const u8 rss_base_cpu = 0;
 969         u8 rss_enable = ENIC_SETTING(enic, RSS) && (enic->rq_count > 1);
 970
 971         if (rss_enable) {
 972                 if (!enic_set_rsskey(enic)) {
 973                         if (enic_set_rsscpu(enic, rss_hash_bits)) {
 974                                 rss_enable = 0;
 975                                 dev_warning(enic, "RSS disabled, "\
 976                                         "Failed to set RSS cpu indirection table.");
 977                         }
 978                 } else {
 979                         rss_enable = 0;
 980                         dev_warning(enic,
 981                                 "RSS disabled, Failed to set RSS key.\n");
 982                 }
 983         }
 984
 985         return enic_set_niccfg(enic, rss_default_cpu, rss_hash_type,
 986                 rss_hash_bits, rss_base_cpu, rss_enable);
 987 }
 988
 989 int enic_setup_finish(struct enic *enic)
 990 {
 991         int ret;
 992
 993         enic_init_soft_stats(enic);
 994
 995         ret = enic_set_rss_nic_cfg(enic);
 996         if (ret) {
 997                 dev_err(enic, "Failed to config nic, aborting.\n");
 998                 return -1;
 999         }
1000
1001         /* Default conf */
1002         vnic_dev_packet_filter(enic->vdev,
1003                 1 /* directed  */,
1004                 1 /* multicast */,
1005                 1 /* broadcast */,
1006                 0 /* promisc   */,
1007                 1 /* allmulti  */);
1008
1009         enic->promisc = 0;
1010         enic->allmulti = 1;
1011
1012         return 0;
1013 }
1014
1015 void enic_add_packet_filter(struct enic *enic)
1016 {
1017         /* Args -> directed, multicast, broadcast, promisc, allmulti */
1018         vnic_dev_packet_filter(enic->vdev, 1, 1, 1,
1019                 enic->promisc, enic->allmulti);
1020 }
1021
1022 int enic_get_link_status(struct enic *enic)
1023 {
1024         return vnic_dev_link_status(enic->vdev);
1025 }
1026
1027 static void enic_dev_deinit(struct enic *enic)
1028 {
1029         struct rte_eth_dev *eth_dev = enic->rte_dev;
1030
1031         rte_free(eth_dev->data->mac_addrs);
1032 }
1033
1034
1035 int enic_set_vnic_res(struct enic *enic)
1036 {
1037         struct rte_eth_dev *eth_dev = enic->rte_dev;
1038         int rc = 0;
1039
1040         /* With Rx scatter support, two RQs are now used per RQ used by
1041          * the application.
1042          */
1043         if (enic->conf_rq_count < eth_dev->data->nb_rx_queues) {
1044                 dev_err(dev, "Not enough Receive queues. Requested:%u which uses %d RQs on VIC, Configured:%u\n",
1045                         eth_dev->data->nb_rx_queues,
1046                         eth_dev->data->nb_rx_queues * 2, enic->conf_rq_count);
1047                 rc = -EINVAL;
1048         }
1049         if (enic->conf_wq_count < eth_dev->data->nb_tx_queues) {
1050                 dev_err(dev, "Not enough Transmit queues. Requested:%u, Configured:%u\n",
1051                         eth_dev->data->nb_tx_queues, enic->conf_wq_count);
1052                 rc = -EINVAL;
1053         }
1054
1055         if (enic->conf_cq_count < (eth_dev->data->nb_rx_queues +
1056                                    eth_dev->data->nb_tx_queues)) {
1057                 dev_err(dev, "Not enough Completion queues. Required:%u, Configured:%u\n",
1058                         (eth_dev->data->nb_rx_queues +
1059                          eth_dev->data->nb_tx_queues), enic->conf_cq_count);
1060                 rc = -EINVAL;
1061         }
1062
1063         if (rc == 0) {
1064                 enic->rq_count = eth_dev->data->nb_rx_queues;
1065                 enic->wq_count = eth_dev->data->nb_tx_queues;
1066                 enic->cq_count = enic->rq_count + enic->wq_count;
1067         }
1068
1069         return rc;
1070 }
1071
1072 /* The Cisco NIC can send and receive packets up to a max packet size
1073  * determined by the NIC type and firmware. There is also an MTU
1074  * configured into the NIC via the CIMC/UCSM management interface
1075  * which can be overridden by this function (up to the max packet size).
1076  * Depending on the network setup, doing so may cause packet drops
1077  * and unexpected behavior.
1078  */
1079 int enic_set_mtu(struct enic *enic, uint16_t new_mtu)
1080 {
1081         uint16_t old_mtu;       /* previous setting */
1082         uint16_t config_mtu;    /* Value configured into NIC via CIMC/UCSM */
1083         struct rte_eth_dev *eth_dev = enic->rte_dev;
1084
1085         old_mtu = eth_dev->data->mtu;
1086         config_mtu = enic->config.mtu;
1087
1088         /* only works with Rx scatter disabled */
1089         if (enic->rte_dev->data->dev_conf.rxmode.enable_scatter)
1090                 return -ENOTSUP;
1091
1092         if (new_mtu > enic->max_mtu) {
1093                 dev_err(enic,
1094                         "MTU not updated: requested (%u) greater than max (%u)\n",
1095                         new_mtu, enic->max_mtu);
1096                 return -EINVAL;
1097         }
1098         if (new_mtu < ENIC_MIN_MTU) {
1099                 dev_info(enic,
1100                         "MTU not updated: requested (%u) less than min (%u)\n",
1101                         new_mtu, ENIC_MIN_MTU);
1102                 return -EINVAL;
1103         }
1104         if (new_mtu > config_mtu)
1105                 dev_warning(enic,
1106                         "MTU (%u) is greater than value configured in NIC (%u)\n",
1107                         new_mtu, config_mtu);
1108
1109         /* update the mtu */
1110         eth_dev->data->mtu = new_mtu;
1111
1112         dev_info(enic, "MTU changed from %u to %u\n",  old_mtu, new_mtu);
1113         return 0;
1114 }
1115
1116 static int enic_dev_init(struct enic *enic)
1117 {
1118         int err;
1119         struct rte_eth_dev *eth_dev = enic->rte_dev;
1120
1121         vnic_dev_intr_coal_timer_info_default(enic->vdev);
1122
1123         /* Get vNIC configuration
1124         */
1125         err = enic_get_vnic_config(enic);
1126         if (err) {
1127                 dev_err(dev, "Get vNIC configuration failed, aborting\n");
1128                 return err;
1129         }
1130
1131         /* Get available resource counts */
1132         enic_get_res_counts(enic);
1133         if (enic->conf_rq_count == 1) {
1134                 dev_err(enic, "Running with only 1 RQ configured in the vNIC is not supported.\n");
1135                 dev_err(enic, "Please configure 2 RQs in the vNIC for each Rx queue used by DPDK.\n");
1136                 dev_err(enic, "See the ENIC PMD guide for more information.\n");
1137                 return -EINVAL;
1138         }
1139
1140         eth_dev->data->mac_addrs = rte_zmalloc("enic_mac_addr", ETH_ALEN, 0);
1141         if (!eth_dev->data->mac_addrs) {
1142                 dev_err(enic, "mac addr storage alloc failed, aborting.\n");
1143                 return -1;
1144         }
1145         ether_addr_copy((struct ether_addr *) enic->mac_addr,
1146                 &eth_dev->data->mac_addrs[0]);
1147
1148         vnic_dev_set_reset_flag(enic->vdev, 0);
1149
1150         return 0;
1151
1152 }
1153
1154 int enic_probe(struct enic *enic)
1155 {
1156         struct rte_pci_device *pdev = enic->pdev;
1157         int err = -1;
1158
1159         dev_debug(enic, " Initializing ENIC PMD\n");
1160
1161         enic->bar0.vaddr = (void *)pdev->mem_resource[0].addr;
1162         enic->bar0.len = pdev->mem_resource[0].len;
1163
1164         /* Register vNIC device */
1165         enic->vdev = vnic_dev_register(NULL, enic, enic->pdev, &enic->bar0, 1);
1166         if (!enic->vdev) {
1167                 dev_err(enic, "vNIC registration failed, aborting\n");
1168                 goto err_out;
1169         }
1170
1171         LIST_INIT(&enic->memzone_list);
1172         rte_spinlock_init(&enic->memzone_list_lock);
1173
1174         vnic_register_cbacks(enic->vdev,
1175                 enic_alloc_consistent,
1176                 enic_free_consistent);
1177
1178         /* Issue device open to get device in known state */
1179         err = enic_dev_open(enic);
1180         if (err) {
1181                 dev_err(enic, "vNIC dev open failed, aborting\n");
1182                 goto err_out_unregister;
1183         }
1184
1185         /* Set ingress vlan rewrite mode before vnic initialization */
1186         err = vnic_dev_set_ig_vlan_rewrite_mode(enic->vdev,
1187                 IG_VLAN_REWRITE_MODE_PASS_THRU);
1188         if (err) {
1189                 dev_err(enic,
1190                         "Failed to set ingress vlan rewrite mode, aborting.\n");
1191                 goto err_out_dev_close;
1192         }
1193
1194         /* Issue device init to initialize the vnic-to-switch link.
1195          * We'll start with carrier off and wait for link UP
1196          * notification later to turn on carrier.  We don't need
1197          * to wait here for the vnic-to-switch link initialization
1198          * to complete; link UP notification is the indication that
1199          * the process is complete.
1200          */
1201
1202         err = vnic_dev_init(enic->vdev, 0);
1203         if (err) {
1204                 dev_err(enic, "vNIC dev init failed, aborting\n");
1205                 goto err_out_dev_close;
1206         }
1207
1208         err = enic_dev_init(enic);
1209         if (err) {
1210                 dev_err(enic, "Device initialization failed, aborting\n");
1211                 goto err_out_dev_close;
1212         }
1213
1214         return 0;
1215
1216 err_out_dev_close:
1217         vnic_dev_close(enic->vdev);
1218 err_out_unregister:
1219         vnic_dev_unregister(enic->vdev);
1220 err_out:
1221         return err;
1222 }
1223
1224 void enic_remove(struct enic *enic)
1225 {
1226         enic_dev_deinit(enic);
1227         vnic_dev_close(enic->vdev);
1228         vnic_dev_unregister(enic->vdev);
1229 }