drivers/net/enic/enic_ethdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2008-2017 Cisco Systems, Inc.  All rights reserved.
   3  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
   4  */
   5
   6 #include <stdio.h>
   7 #include <stdint.h>
   8
   9 #include <rte_dev.h>
  10 #include <rte_pci.h>
  11 #include <rte_bus_pci.h>
  12 #include <rte_ethdev_driver.h>
  13 #include <rte_ethdev_pci.h>
  14 #include <rte_string_fns.h>
  15
  16 #include "vnic_intr.h"
  17 #include "vnic_cq.h"
  18 #include "vnic_wq.h"
  19 #include "vnic_rq.h"
  20 #include "vnic_enet.h"
  21 #include "enic.h"
  22
  23 int enicpmd_logtype_init;
  24 int enicpmd_logtype_flow;
  25
  26 #define PMD_INIT_LOG(level, fmt, args...) \
  27         rte_log(RTE_LOG_ ## level, enicpmd_logtype_init, \
  28                 "%s" fmt "\n", __func__, ##args)
  29
  30 #define ENICPMD_FUNC_TRACE() PMD_INIT_LOG(DEBUG, " >>")
  31
  32 /*
  33  * The set of PCI devices this driver supports
  34  */
  35 #define CISCO_PCI_VENDOR_ID 0x1137
  36 static const struct rte_pci_id pci_id_enic_map[] = {
  37         { RTE_PCI_DEVICE(CISCO_PCI_VENDOR_ID, PCI_DEVICE_ID_CISCO_VIC_ENET) },
  38         { RTE_PCI_DEVICE(CISCO_PCI_VENDOR_ID, PCI_DEVICE_ID_CISCO_VIC_ENET_VF) },
  39         {.vendor_id = 0, /* sentinel */},
  40 };
  41
  42 #define ENIC_TX_OFFLOAD_CAPA (                  \
  43                 DEV_TX_OFFLOAD_VLAN_INSERT |    \
  44                 DEV_TX_OFFLOAD_IPV4_CKSUM  |    \
  45                 DEV_TX_OFFLOAD_UDP_CKSUM   |    \
  46                 DEV_TX_OFFLOAD_TCP_CKSUM   |    \
  47                 DEV_TX_OFFLOAD_TCP_TSO)
  48
  49 #define ENIC_RX_OFFLOAD_CAPA (                  \
  50                 DEV_RX_OFFLOAD_VLAN_STRIP |     \
  51                 DEV_RX_OFFLOAD_IPV4_CKSUM |     \
  52                 DEV_RX_OFFLOAD_UDP_CKSUM  |     \
  53                 DEV_RX_OFFLOAD_TCP_CKSUM)
  54
  55 RTE_INIT(enicpmd_init_log);
  56 static void
  57 enicpmd_init_log(void)
  58 {
  59         enicpmd_logtype_init = rte_log_register("pmd.net.enic.init");
  60         if (enicpmd_logtype_init >= 0)
  61                 rte_log_set_level(enicpmd_logtype_init, RTE_LOG_NOTICE);
  62         enicpmd_logtype_flow = rte_log_register("pmd.net.enic.flow");
  63         if (enicpmd_logtype_flow >= 0)
  64                 rte_log_set_level(enicpmd_logtype_flow, RTE_LOG_NOTICE);
  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 = 0;
 119
 120         ENICPMD_FUNC_TRACE();
 121
 122         switch (filter_type) {
 123         case RTE_ETH_FILTER_GENERIC:
 124                 if (filter_op != RTE_ETH_FILTER_GET)
 125                         return -EINVAL;
 126                 *(const void **)arg = &enic_flow_ops;
 127                 break;
 128         case RTE_ETH_FILTER_FDIR:
 129                 ret = enicpmd_fdir_ctrl_func(dev, filter_op, arg);
 130                 break;
 131         default:
 132                 dev_warning(enic, "Filter type (%d) not supported",
 133                         filter_type);
 134                 ret = -EINVAL;
 135                 break;
 136         }
 137
 138         return ret;
 139 }
 140
 141 static void enicpmd_dev_tx_queue_release(void *txq)
 142 {
 143         ENICPMD_FUNC_TRACE();
 144
 145         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 146                 return;
 147
 148         enic_free_wq(txq);
 149 }
 150
 151 static int enicpmd_dev_setup_intr(struct enic *enic)
 152 {
 153         int ret;
 154         unsigned int index;
 155
 156         ENICPMD_FUNC_TRACE();
 157
 158         /* Are we done with the init of all the queues? */
 159         for (index = 0; index < enic->cq_count; index++) {
 160                 if (!enic->cq[index].ctrl)
 161                         break;
 162         }
 163         if (enic->cq_count != index)
 164                 return 0;
 165         for (index = 0; index < enic->wq_count; index++) {
 166                 if (!enic->wq[index].ctrl)
 167                         break;
 168         }
 169         if (enic->wq_count != index)
 170                 return 0;
 171         /* check start of packet (SOP) RQs only in case scatter is disabled. */
 172         for (index = 0; index < enic->rq_count; index++) {
 173                 if (!enic->rq[enic_rte_rq_idx_to_sop_idx(index)].ctrl)
 174                         break;
 175         }
 176         if (enic->rq_count != index)
 177                 return 0;
 178
 179         ret = enic_alloc_intr_resources(enic);
 180         if (ret) {
 181                 dev_err(enic, "alloc intr failed\n");
 182                 return ret;
 183         }
 184         enic_init_vnic_resources(enic);
 185
 186         ret = enic_setup_finish(enic);
 187         if (ret)
 188                 dev_err(enic, "setup could not be finished\n");
 189
 190         return ret;
 191 }
 192
 193 static int enicpmd_dev_tx_queue_setup(struct rte_eth_dev *eth_dev,
 194         uint16_t queue_idx,
 195         uint16_t nb_desc,
 196         unsigned int socket_id,
 197         __rte_unused const struct rte_eth_txconf *tx_conf)
 198 {
 199         int ret;
 200         struct enic *enic = pmd_priv(eth_dev);
 201
 202         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 203                 return -E_RTE_SECONDARY;
 204
 205         ENICPMD_FUNC_TRACE();
 206         RTE_ASSERT(queue_idx < enic->conf_wq_count);
 207         eth_dev->data->tx_queues[queue_idx] = (void *)&enic->wq[queue_idx];
 208
 209         ret = enic_alloc_wq(enic, queue_idx, socket_id, nb_desc);
 210         if (ret) {
 211                 dev_err(enic, "error in allocating wq\n");
 212                 return ret;
 213         }
 214
 215         return enicpmd_dev_setup_intr(enic);
 216 }
 217
 218 static int enicpmd_dev_tx_queue_start(struct rte_eth_dev *eth_dev,
 219         uint16_t queue_idx)
 220 {
 221         struct enic *enic = pmd_priv(eth_dev);
 222
 223         ENICPMD_FUNC_TRACE();
 224
 225         enic_start_wq(enic, queue_idx);
 226
 227         return 0;
 228 }
 229
 230 static int enicpmd_dev_tx_queue_stop(struct rte_eth_dev *eth_dev,
 231         uint16_t queue_idx)
 232 {
 233         int ret;
 234         struct enic *enic = pmd_priv(eth_dev);
 235
 236         ENICPMD_FUNC_TRACE();
 237
 238         ret = enic_stop_wq(enic, queue_idx);
 239         if (ret)
 240                 dev_err(enic, "error in stopping wq %d\n", queue_idx);
 241
 242         return ret;
 243 }
 244
 245 static int enicpmd_dev_rx_queue_start(struct rte_eth_dev *eth_dev,
 246         uint16_t queue_idx)
 247 {
 248         struct enic *enic = pmd_priv(eth_dev);
 249
 250         ENICPMD_FUNC_TRACE();
 251
 252         enic_start_rq(enic, queue_idx);
 253
 254         return 0;
 255 }
 256
 257 static int enicpmd_dev_rx_queue_stop(struct rte_eth_dev *eth_dev,
 258         uint16_t queue_idx)
 259 {
 260         int ret;
 261         struct enic *enic = pmd_priv(eth_dev);
 262
 263         ENICPMD_FUNC_TRACE();
 264
 265         ret = enic_stop_rq(enic, queue_idx);
 266         if (ret)
 267                 dev_err(enic, "error in stopping rq %d\n", queue_idx);
 268
 269         return ret;
 270 }
 271
 272 static void enicpmd_dev_rx_queue_release(void *rxq)
 273 {
 274         ENICPMD_FUNC_TRACE();
 275
 276         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 277                 return;
 278
 279         enic_free_rq(rxq);
 280 }
 281
 282 static uint32_t enicpmd_dev_rx_queue_count(struct rte_eth_dev *dev,
 283                                            uint16_t rx_queue_id)
 284 {
 285         struct enic *enic = pmd_priv(dev);
 286         uint32_t queue_count = 0;
 287         struct vnic_cq *cq;
 288         uint32_t cq_tail;
 289         uint16_t cq_idx;
 290         int rq_num;
 291
 292         rq_num = enic_rte_rq_idx_to_sop_idx(rx_queue_id);
 293         cq = &enic->cq[enic_cq_rq(enic, rq_num)];
 294         cq_idx = cq->to_clean;
 295
 296         cq_tail = ioread32(&cq->ctrl->cq_tail);
 297
 298         if (cq_tail < cq_idx)
 299                 cq_tail += cq->ring.desc_count;
 300
 301         queue_count = cq_tail - cq_idx;
 302
 303         return queue_count;
 304 }
 305
 306 static int enicpmd_dev_rx_queue_setup(struct rte_eth_dev *eth_dev,
 307         uint16_t queue_idx,
 308         uint16_t nb_desc,
 309         unsigned int socket_id,
 310         const struct rte_eth_rxconf *rx_conf,
 311         struct rte_mempool *mp)
 312 {
 313         int ret;
 314         struct enic *enic = pmd_priv(eth_dev);
 315
 316         ENICPMD_FUNC_TRACE();
 317
 318         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 319                 return -E_RTE_SECONDARY;
 320         RTE_ASSERT(enic_rte_rq_idx_to_sop_idx(queue_idx) < enic->conf_rq_count);
 321         eth_dev->data->rx_queues[queue_idx] =
 322                 (void *)&enic->rq[enic_rte_rq_idx_to_sop_idx(queue_idx)];
 323
 324         ret = enic_alloc_rq(enic, queue_idx, socket_id, mp, nb_desc,
 325                             rx_conf->rx_free_thresh);
 326         if (ret) {
 327                 dev_err(enic, "error in allocating rq\n");
 328                 return ret;
 329         }
 330
 331         return enicpmd_dev_setup_intr(enic);
 332 }
 333
 334 static int enicpmd_vlan_offload_set(struct rte_eth_dev *eth_dev, int mask)
 335 {
 336         struct enic *enic = pmd_priv(eth_dev);
 337         uint64_t offloads;
 338
 339         ENICPMD_FUNC_TRACE();
 340
 341         offloads = eth_dev->data->dev_conf.rxmode.offloads;
 342         if (mask & ETH_VLAN_STRIP_MASK) {
 343                 if (offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
 344                         enic->ig_vlan_strip_en = 1;
 345                 else
 346                         enic->ig_vlan_strip_en = 0;
 347         }
 348
 349         if ((mask & ETH_VLAN_FILTER_MASK) &&
 350             (offloads & DEV_RX_OFFLOAD_VLAN_FILTER)) {
 351                 dev_warning(enic,
 352                         "Configuration of VLAN filter is not supported\n");
 353         }
 354
 355         if ((mask & ETH_VLAN_EXTEND_MASK) &&
 356             (offloads & DEV_RX_OFFLOAD_VLAN_EXTEND)) {
 357                 dev_warning(enic,
 358                         "Configuration of extended VLAN is not supported\n");
 359         }
 360
 361         return enic_set_vlan_strip(enic);
 362 }
 363
 364 static int enicpmd_dev_configure(struct rte_eth_dev *eth_dev)
 365 {
 366         int ret;
 367         int mask;
 368         struct enic *enic = pmd_priv(eth_dev);
 369
 370         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 371                 return -E_RTE_SECONDARY;
 372
 373         ENICPMD_FUNC_TRACE();
 374         ret = enic_set_vnic_res(enic);
 375         if (ret) {
 376                 dev_err(enic, "Set vNIC resource num  failed, aborting\n");
 377                 return ret;
 378         }
 379
 380         enic->hw_ip_checksum = !!(eth_dev->data->dev_conf.rxmode.offloads &
 381                                   DEV_RX_OFFLOAD_CHECKSUM);
 382         /* All vlan offload masks to apply the current settings */
 383         mask = ETH_VLAN_STRIP_MASK |
 384                 ETH_VLAN_FILTER_MASK |
 385                 ETH_VLAN_EXTEND_MASK;
 386         ret = enicpmd_vlan_offload_set(eth_dev, mask);
 387         if (ret) {
 388                 dev_err(enic, "Failed to configure VLAN offloads\n");
 389                 return ret;
 390         }
 391         /*
 392          * Initialize RSS with the default reta and key. If the user key is
 393          * given (rx_adv_conf.rss_conf.rss_key), will use that instead of the
 394          * default key.
 395          */
 396         return enic_init_rss_nic_cfg(enic);
 397 }
 398
 399 /* Start the device.
 400  * It returns 0 on success.
 401  */
 402 static int enicpmd_dev_start(struct rte_eth_dev *eth_dev)
 403 {
 404         struct enic *enic = pmd_priv(eth_dev);
 405
 406         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 407                 return -E_RTE_SECONDARY;
 408
 409         ENICPMD_FUNC_TRACE();
 410         return enic_enable(enic);
 411 }
 412
 413 /*
 414  * Stop device: disable rx and tx functions to allow for reconfiguring.
 415  */
 416 static void enicpmd_dev_stop(struct rte_eth_dev *eth_dev)
 417 {
 418         struct rte_eth_link link;
 419         struct enic *enic = pmd_priv(eth_dev);
 420
 421         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 422                 return;
 423
 424         ENICPMD_FUNC_TRACE();
 425         enic_disable(enic);
 426         memset(&link, 0, sizeof(link));
 427         rte_atomic64_cmpset((uint64_t *)&eth_dev->data->dev_link,
 428                 *(uint64_t *)&eth_dev->data->dev_link,
 429                 *(uint64_t *)&link);
 430 }
 431
 432 /*
 433  * Stop device.
 434  */
 435 static void enicpmd_dev_close(struct rte_eth_dev *eth_dev)
 436 {
 437         struct enic *enic = pmd_priv(eth_dev);
 438
 439         ENICPMD_FUNC_TRACE();
 440         enic_remove(enic);
 441 }
 442
 443 static int enicpmd_dev_link_update(struct rte_eth_dev *eth_dev,
 444         __rte_unused int wait_to_complete)
 445 {
 446         struct enic *enic = pmd_priv(eth_dev);
 447
 448         ENICPMD_FUNC_TRACE();
 449         return enic_link_update(enic);
 450 }
 451
 452 static int enicpmd_dev_stats_get(struct rte_eth_dev *eth_dev,
 453         struct rte_eth_stats *stats)
 454 {
 455         struct enic *enic = pmd_priv(eth_dev);
 456
 457         ENICPMD_FUNC_TRACE();
 458         return enic_dev_stats_get(enic, stats);
 459 }
 460
 461 static void enicpmd_dev_stats_reset(struct rte_eth_dev *eth_dev)
 462 {
 463         struct enic *enic = pmd_priv(eth_dev);
 464
 465         ENICPMD_FUNC_TRACE();
 466         enic_dev_stats_clear(enic);
 467 }
 468
 469 static void enicpmd_dev_info_get(struct rte_eth_dev *eth_dev,
 470         struct rte_eth_dev_info *device_info)
 471 {
 472         struct enic *enic = pmd_priv(eth_dev);
 473
 474         ENICPMD_FUNC_TRACE();
 475         device_info->pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
 476         /* Scattered Rx uses two receive queues per rx queue exposed to dpdk */
 477         device_info->max_rx_queues = enic->conf_rq_count / 2;
 478         device_info->max_tx_queues = enic->conf_wq_count;
 479         device_info->min_rx_bufsize = ENIC_MIN_MTU;
 480         /* "Max" mtu is not a typo. HW receives packet sizes up to the
 481          * max mtu regardless of the current mtu (vNIC's mtu). vNIC mtu is
 482          * a hint to the driver to size receive buffers accordingly so that
 483          * larger-than-vnic-mtu packets get truncated.. For DPDK, we let
 484          * the user decide the buffer size via rxmode.max_rx_pkt_len, basically
 485          * ignoring vNIC mtu.
 486          */
 487         device_info->max_rx_pktlen = enic_mtu_to_max_rx_pktlen(enic->max_mtu);
 488         device_info->max_mac_addrs = ENIC_MAX_MAC_ADDR;
 489         device_info->rx_offload_capa = ENIC_RX_OFFLOAD_CAPA;
 490         device_info->tx_offload_capa = ENIC_TX_OFFLOAD_CAPA;
 491         device_info->default_rxconf = (struct rte_eth_rxconf) {
 492                 .rx_free_thresh = ENIC_DEFAULT_RX_FREE_THRESH
 493         };
 494         device_info->reta_size = enic->reta_size;
 495         device_info->hash_key_size = enic->hash_key_size;
 496         device_info->flow_type_rss_offloads = enic->flow_type_rss_offloads;
 497 }
 498
 499 static const uint32_t *enicpmd_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 500 {
 501         static const uint32_t ptypes[] = {
 502                 RTE_PTYPE_L2_ETHER,
 503                 RTE_PTYPE_L2_ETHER_VLAN,
 504                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 505                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 506                 RTE_PTYPE_L4_TCP,
 507                 RTE_PTYPE_L4_UDP,
 508                 RTE_PTYPE_L4_FRAG,
 509                 RTE_PTYPE_L4_NONFRAG,
 510                 RTE_PTYPE_UNKNOWN
 511         };
 512
 513         if (dev->rx_pkt_burst == enic_recv_pkts)
 514                 return ptypes;
 515         return NULL;
 516 }
 517
 518 static void enicpmd_dev_promiscuous_enable(struct rte_eth_dev *eth_dev)
 519 {
 520         struct enic *enic = pmd_priv(eth_dev);
 521
 522         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 523                 return;
 524
 525         ENICPMD_FUNC_TRACE();
 526
 527         enic->promisc = 1;
 528         enic_add_packet_filter(enic);
 529 }
 530
 531 static void enicpmd_dev_promiscuous_disable(struct rte_eth_dev *eth_dev)
 532 {
 533         struct enic *enic = pmd_priv(eth_dev);
 534
 535         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 536                 return;
 537
 538         ENICPMD_FUNC_TRACE();
 539         enic->promisc = 0;
 540         enic_add_packet_filter(enic);
 541 }
 542
 543 static void enicpmd_dev_allmulticast_enable(struct rte_eth_dev *eth_dev)
 544 {
 545         struct enic *enic = pmd_priv(eth_dev);
 546
 547         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 548                 return;
 549
 550         ENICPMD_FUNC_TRACE();
 551         enic->allmulti = 1;
 552         enic_add_packet_filter(enic);
 553 }
 554
 555 static void enicpmd_dev_allmulticast_disable(struct rte_eth_dev *eth_dev)
 556 {
 557         struct enic *enic = pmd_priv(eth_dev);
 558
 559         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 560                 return;
 561
 562         ENICPMD_FUNC_TRACE();
 563         enic->allmulti = 0;
 564         enic_add_packet_filter(enic);
 565 }
 566
 567 static int enicpmd_add_mac_addr(struct rte_eth_dev *eth_dev,
 568         struct ether_addr *mac_addr,
 569         __rte_unused uint32_t index, __rte_unused uint32_t pool)
 570 {
 571         struct enic *enic = pmd_priv(eth_dev);
 572
 573         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 574                 return -E_RTE_SECONDARY;
 575
 576         ENICPMD_FUNC_TRACE();
 577         return enic_set_mac_address(enic, mac_addr->addr_bytes);
 578 }
 579
 580 static void enicpmd_remove_mac_addr(struct rte_eth_dev *eth_dev, uint32_t index)
 581 {
 582         struct enic *enic = pmd_priv(eth_dev);
 583
 584         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 585                 return;
 586
 587         ENICPMD_FUNC_TRACE();
 588         enic_del_mac_address(enic, index);
 589 }
 590
 591 static int enicpmd_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu)
 592 {
 593         struct enic *enic = pmd_priv(eth_dev);
 594
 595         ENICPMD_FUNC_TRACE();
 596         return enic_set_mtu(enic, mtu);
 597 }
 598
 599 static int enicpmd_dev_rss_reta_query(struct rte_eth_dev *dev,
 600                                       struct rte_eth_rss_reta_entry64
 601                                       *reta_conf,
 602                                       uint16_t reta_size)
 603 {
 604         struct enic *enic = pmd_priv(dev);
 605         uint16_t i, idx, shift;
 606
 607         ENICPMD_FUNC_TRACE();
 608         if (reta_size != ENIC_RSS_RETA_SIZE) {
 609                 dev_err(enic, "reta_query: wrong reta_size. given=%u expected=%u\n",
 610                         reta_size, ENIC_RSS_RETA_SIZE);
 611                 return -EINVAL;
 612         }
 613
 614         for (i = 0; i < reta_size; i++) {
 615                 idx = i / RTE_RETA_GROUP_SIZE;
 616                 shift = i % RTE_RETA_GROUP_SIZE;
 617                 if (reta_conf[idx].mask & (1ULL << shift))
 618                         reta_conf[idx].reta[shift] = enic_sop_rq_idx_to_rte_idx(
 619                                 enic->rss_cpu.cpu[i / 4].b[i % 4]);
 620         }
 621
 622         return 0;
 623 }
 624
 625 static int enicpmd_dev_rss_reta_update(struct rte_eth_dev *dev,
 626                                        struct rte_eth_rss_reta_entry64
 627                                        *reta_conf,
 628                                        uint16_t reta_size)
 629 {
 630         struct enic *enic = pmd_priv(dev);
 631         union vnic_rss_cpu rss_cpu;
 632         uint16_t i, idx, shift;
 633
 634         ENICPMD_FUNC_TRACE();
 635         if (reta_size != ENIC_RSS_RETA_SIZE) {
 636                 dev_err(enic, "reta_update: wrong reta_size. given=%u"
 637                         " expected=%u\n",
 638                         reta_size, ENIC_RSS_RETA_SIZE);
 639                 return -EINVAL;
 640         }
 641         /*
 642          * Start with the current reta and modify it per reta_conf, as we
 643          * need to push the entire reta even if we only modify one entry.
 644          */
 645         rss_cpu = enic->rss_cpu;
 646         for (i = 0; i < reta_size; i++) {
 647                 idx = i / RTE_RETA_GROUP_SIZE;
 648                 shift = i % RTE_RETA_GROUP_SIZE;
 649                 if (reta_conf[idx].mask & (1ULL << shift))
 650                         rss_cpu.cpu[i / 4].b[i % 4] =
 651                                 enic_rte_rq_idx_to_sop_idx(
 652                                         reta_conf[idx].reta[shift]);
 653         }
 654         return enic_set_rss_reta(enic, &rss_cpu);
 655 }
 656
 657 static int enicpmd_dev_rss_hash_update(struct rte_eth_dev *dev,
 658                                        struct rte_eth_rss_conf *rss_conf)
 659 {
 660         struct enic *enic = pmd_priv(dev);
 661
 662         ENICPMD_FUNC_TRACE();
 663         return enic_set_rss_conf(enic, rss_conf);
 664 }
 665
 666 static int enicpmd_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
 667                                          struct rte_eth_rss_conf *rss_conf)
 668 {
 669         struct enic *enic = pmd_priv(dev);
 670
 671         ENICPMD_FUNC_TRACE();
 672         if (rss_conf == NULL)
 673                 return -EINVAL;
 674         if (rss_conf->rss_key != NULL &&
 675             rss_conf->rss_key_len < ENIC_RSS_HASH_KEY_SIZE) {
 676                 dev_err(enic, "rss_hash_conf_get: wrong rss_key_len. given=%u"
 677                         " expected=%u+\n",
 678                         rss_conf->rss_key_len, ENIC_RSS_HASH_KEY_SIZE);
 679                 return -EINVAL;
 680         }
 681         rss_conf->rss_hf = enic->rss_hf;
 682         if (rss_conf->rss_key != NULL) {
 683                 int i;
 684                 for (i = 0; i < ENIC_RSS_HASH_KEY_SIZE; i++) {
 685                         rss_conf->rss_key[i] =
 686                                 enic->rss_key.key[i / 10].b[i % 10];
 687                 }
 688                 rss_conf->rss_key_len = ENIC_RSS_HASH_KEY_SIZE;
 689         }
 690         return 0;
 691 }
 692
 693 static void enicpmd_dev_rxq_info_get(struct rte_eth_dev *dev,
 694                                      uint16_t rx_queue_id,
 695                                      struct rte_eth_rxq_info *qinfo)
 696 {
 697         struct enic *enic = pmd_priv(dev);
 698         struct vnic_rq *rq_sop;
 699         struct vnic_rq *rq_data;
 700         struct rte_eth_rxconf *conf;
 701         uint16_t sop_queue_idx;
 702         uint16_t data_queue_idx;
 703
 704         ENICPMD_FUNC_TRACE();
 705         sop_queue_idx = enic_rte_rq_idx_to_sop_idx(rx_queue_id);
 706         data_queue_idx = enic_rte_rq_idx_to_data_idx(rx_queue_id);
 707         rq_sop = &enic->rq[sop_queue_idx];
 708         rq_data = &enic->rq[data_queue_idx]; /* valid if data_queue_enable */
 709         qinfo->mp = rq_sop->mp;
 710         qinfo->scattered_rx = rq_sop->data_queue_enable;
 711         qinfo->nb_desc = rq_sop->ring.desc_count;
 712         if (qinfo->scattered_rx)
 713                 qinfo->nb_desc += rq_data->ring.desc_count;
 714         conf = &qinfo->conf;
 715         memset(conf, 0, sizeof(*conf));
 716         conf->rx_free_thresh = rq_sop->rx_free_thresh;
 717         conf->rx_drop_en = 1;
 718         /*
 719          * Except VLAN stripping (port setting), all the checksum offloads
 720          * are always enabled.
 721          */
 722         conf->offloads = ENIC_RX_OFFLOAD_CAPA;
 723         if (!enic->ig_vlan_strip_en)
 724                 conf->offloads &= ~DEV_RX_OFFLOAD_VLAN_STRIP;
 725         /* rx_thresh and other fields are not applicable for enic */
 726 }
 727
 728 static void enicpmd_dev_txq_info_get(struct rte_eth_dev *dev,
 729                                      __rte_unused uint16_t tx_queue_id,
 730                                      struct rte_eth_txq_info *qinfo)
 731 {
 732         struct enic *enic = pmd_priv(dev);
 733
 734         ENICPMD_FUNC_TRACE();
 735         qinfo->nb_desc = enic->config.wq_desc_count;
 736         memset(&qinfo->conf, 0, sizeof(qinfo->conf));
 737         qinfo->conf.offloads = ENIC_TX_OFFLOAD_CAPA; /* not configurable */
 738         /* tx_thresh, and all the other fields are not applicable for enic */
 739 }
 740
 741 static const struct eth_dev_ops enicpmd_eth_dev_ops = {
 742         .dev_configure        = enicpmd_dev_configure,
 743         .dev_start            = enicpmd_dev_start,
 744         .dev_stop             = enicpmd_dev_stop,
 745         .dev_set_link_up      = NULL,
 746         .dev_set_link_down    = NULL,
 747         .dev_close            = enicpmd_dev_close,
 748         .promiscuous_enable   = enicpmd_dev_promiscuous_enable,
 749         .promiscuous_disable  = enicpmd_dev_promiscuous_disable,
 750         .allmulticast_enable  = enicpmd_dev_allmulticast_enable,
 751         .allmulticast_disable = enicpmd_dev_allmulticast_disable,
 752         .link_update          = enicpmd_dev_link_update,
 753         .stats_get            = enicpmd_dev_stats_get,
 754         .stats_reset          = enicpmd_dev_stats_reset,
 755         .queue_stats_mapping_set = NULL,
 756         .dev_infos_get        = enicpmd_dev_info_get,
 757         .dev_supported_ptypes_get = enicpmd_dev_supported_ptypes_get,
 758         .mtu_set              = enicpmd_mtu_set,
 759         .vlan_filter_set      = NULL,
 760         .vlan_tpid_set        = NULL,
 761         .vlan_offload_set     = enicpmd_vlan_offload_set,
 762         .vlan_strip_queue_set = NULL,
 763         .rx_queue_start       = enicpmd_dev_rx_queue_start,
 764         .rx_queue_stop        = enicpmd_dev_rx_queue_stop,
 765         .tx_queue_start       = enicpmd_dev_tx_queue_start,
 766         .tx_queue_stop        = enicpmd_dev_tx_queue_stop,
 767         .rx_queue_setup       = enicpmd_dev_rx_queue_setup,
 768         .rx_queue_release     = enicpmd_dev_rx_queue_release,
 769         .rx_queue_count       = enicpmd_dev_rx_queue_count,
 770         .rx_descriptor_done   = NULL,
 771         .tx_queue_setup       = enicpmd_dev_tx_queue_setup,
 772         .tx_queue_release     = enicpmd_dev_tx_queue_release,
 773         .rxq_info_get         = enicpmd_dev_rxq_info_get,
 774         .txq_info_get         = enicpmd_dev_txq_info_get,
 775         .dev_led_on           = NULL,
 776         .dev_led_off          = NULL,
 777         .flow_ctrl_get        = NULL,
 778         .flow_ctrl_set        = NULL,
 779         .priority_flow_ctrl_set = NULL,
 780         .mac_addr_add         = enicpmd_add_mac_addr,
 781         .mac_addr_remove      = enicpmd_remove_mac_addr,
 782         .filter_ctrl          = enicpmd_dev_filter_ctrl,
 783         .reta_query           = enicpmd_dev_rss_reta_query,
 784         .reta_update          = enicpmd_dev_rss_reta_update,
 785         .rss_hash_conf_get    = enicpmd_dev_rss_hash_conf_get,
 786         .rss_hash_update      = enicpmd_dev_rss_hash_update,
 787 };
 788
 789 struct enic *enicpmd_list_head = NULL;
 790 /* Initialize the driver
 791  * It returns 0 on success.
 792  */
 793 static int eth_enicpmd_dev_init(struct rte_eth_dev *eth_dev)
 794 {
 795         struct rte_pci_device *pdev;
 796         struct rte_pci_addr *addr;
 797         struct enic *enic = pmd_priv(eth_dev);
 798
 799         ENICPMD_FUNC_TRACE();
 800
 801         enic->port_id = eth_dev->data->port_id;
 802         enic->rte_dev = eth_dev;
 803         eth_dev->dev_ops = &enicpmd_eth_dev_ops;
 804         eth_dev->rx_pkt_burst = &enic_recv_pkts;
 805         eth_dev->tx_pkt_burst = &enic_xmit_pkts;
 806         eth_dev->tx_pkt_prepare = &enic_prep_pkts;
 807
 808         pdev = RTE_ETH_DEV_TO_PCI(eth_dev);
 809         rte_eth_copy_pci_info(eth_dev, pdev);
 810         enic->pdev = pdev;
 811         addr = &pdev->addr;
 812
 813         snprintf(enic->bdf_name, ENICPMD_BDF_LENGTH, "%04x:%02x:%02x.%x",
 814                 addr->domain, addr->bus, addr->devid, addr->function);
 815
 816         return enic_probe(enic);
 817 }
 818
 819 static int eth_enic_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
 820         struct rte_pci_device *pci_dev)
 821 {
 822         return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct enic),
 823                 eth_enicpmd_dev_init);
 824 }
 825
 826 static int eth_enic_pci_remove(struct rte_pci_device *pci_dev)
 827 {
 828         return rte_eth_dev_pci_generic_remove(pci_dev, NULL);
 829 }
 830
 831 static struct rte_pci_driver rte_enic_pmd = {
 832         .id_table = pci_id_enic_map,
 833         .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC,
 834         .probe = eth_enic_pci_probe,
 835         .remove = eth_enic_pci_remove,
 836 };
 837
 838 RTE_PMD_REGISTER_PCI(net_enic, rte_enic_pmd);
 839 RTE_PMD_REGISTER_PCI_TABLE(net_enic, pci_id_enic_map);
 840 RTE_PMD_REGISTER_KMOD_DEP(net_enic, "* igb_uio | uio_pci_generic | vfio-pci");