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_kvargs.h>
  15 #include <rte_string_fns.h>
  16
  17 #include "vnic_intr.h"
  18 #include "vnic_cq.h"
  19 #include "vnic_wq.h"
  20 #include "vnic_rq.h"
  21 #include "vnic_enet.h"
  22 #include "enic.h"
  23
  24 int enicpmd_logtype_init;
  25 int enicpmd_logtype_flow;
  26
  27 #define PMD_INIT_LOG(level, fmt, args...) \
  28         rte_log(RTE_LOG_ ## level, enicpmd_logtype_init, \
  29                 "%s" fmt "\n", __func__, ##args)
  30
  31 #define ENICPMD_FUNC_TRACE() PMD_INIT_LOG(DEBUG, " >>")
  32
  33 /*
  34  * The set of PCI devices this driver supports
  35  */
  36 #define CISCO_PCI_VENDOR_ID 0x1137
  37 static const struct rte_pci_id pci_id_enic_map[] = {
  38         { RTE_PCI_DEVICE(CISCO_PCI_VENDOR_ID, PCI_DEVICE_ID_CISCO_VIC_ENET) },
  39         { RTE_PCI_DEVICE(CISCO_PCI_VENDOR_ID, PCI_DEVICE_ID_CISCO_VIC_ENET_VF) },
  40         {.vendor_id = 0, /* sentinel */},
  41 };
  42
  43 #define ENIC_DEVARG_DISABLE_OVERLAY "disable-overlay"
  44
  45 RTE_INIT(enicpmd_init_log);
  46 static void
  47 enicpmd_init_log(void)
  48 {
  49         enicpmd_logtype_init = rte_log_register("pmd.net.enic.init");
  50         if (enicpmd_logtype_init >= 0)
  51                 rte_log_set_level(enicpmd_logtype_init, RTE_LOG_NOTICE);
  52         enicpmd_logtype_flow = rte_log_register("pmd.net.enic.flow");
  53         if (enicpmd_logtype_flow >= 0)
  54                 rte_log_set_level(enicpmd_logtype_flow, RTE_LOG_NOTICE);
  55 }
  56
  57 static int
  58 enicpmd_fdir_ctrl_func(struct rte_eth_dev *eth_dev,
  59                         enum rte_filter_op filter_op, void *arg)
  60 {
  61         struct enic *enic = pmd_priv(eth_dev);
  62         int ret = 0;
  63
  64         ENICPMD_FUNC_TRACE();
  65         if (filter_op == RTE_ETH_FILTER_NOP)
  66                 return 0;
  67
  68         if (arg == NULL && filter_op != RTE_ETH_FILTER_FLUSH)
  69                 return -EINVAL;
  70
  71         switch (filter_op) {
  72         case RTE_ETH_FILTER_ADD:
  73         case RTE_ETH_FILTER_UPDATE:
  74                 ret = enic_fdir_add_fltr(enic,
  75                         (struct rte_eth_fdir_filter *)arg);
  76                 break;
  77
  78         case RTE_ETH_FILTER_DELETE:
  79                 ret = enic_fdir_del_fltr(enic,
  80                         (struct rte_eth_fdir_filter *)arg);
  81                 break;
  82
  83         case RTE_ETH_FILTER_STATS:
  84                 enic_fdir_stats_get(enic, (struct rte_eth_fdir_stats *)arg);
  85                 break;
  86
  87         case RTE_ETH_FILTER_FLUSH:
  88                 dev_warning(enic, "unsupported operation %u", filter_op);
  89                 ret = -ENOTSUP;
  90                 break;
  91         case RTE_ETH_FILTER_INFO:
  92                 enic_fdir_info_get(enic, (struct rte_eth_fdir_info *)arg);
  93                 break;
  94         default:
  95                 dev_err(enic, "unknown operation %u", filter_op);
  96                 ret = -EINVAL;
  97                 break;
  98         }
  99         return ret;
 100 }
 101
 102 static int
 103 enicpmd_dev_filter_ctrl(struct rte_eth_dev *dev,
 104                      enum rte_filter_type filter_type,
 105                      enum rte_filter_op filter_op,
 106                      void *arg)
 107 {
 108         int ret = 0;
 109
 110         ENICPMD_FUNC_TRACE();
 111
 112         switch (filter_type) {
 113         case RTE_ETH_FILTER_GENERIC:
 114                 if (filter_op != RTE_ETH_FILTER_GET)
 115                         return -EINVAL;
 116                 *(const void **)arg = &enic_flow_ops;
 117                 break;
 118         case RTE_ETH_FILTER_FDIR:
 119                 ret = enicpmd_fdir_ctrl_func(dev, filter_op, arg);
 120                 break;
 121         default:
 122                 dev_warning(enic, "Filter type (%d) not supported",
 123                         filter_type);
 124                 ret = -EINVAL;
 125                 break;
 126         }
 127
 128         return ret;
 129 }
 130
 131 static void enicpmd_dev_tx_queue_release(void *txq)
 132 {
 133         ENICPMD_FUNC_TRACE();
 134
 135         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 136                 return;
 137
 138         enic_free_wq(txq);
 139 }
 140
 141 static int enicpmd_dev_setup_intr(struct enic *enic)
 142 {
 143         int ret;
 144         unsigned int index;
 145
 146         ENICPMD_FUNC_TRACE();
 147
 148         /* Are we done with the init of all the queues? */
 149         for (index = 0; index < enic->cq_count; index++) {
 150                 if (!enic->cq[index].ctrl)
 151                         break;
 152         }
 153         if (enic->cq_count != index)
 154                 return 0;
 155         for (index = 0; index < enic->wq_count; index++) {
 156                 if (!enic->wq[index].ctrl)
 157                         break;
 158         }
 159         if (enic->wq_count != index)
 160                 return 0;
 161         /* check start of packet (SOP) RQs only in case scatter is disabled. */
 162         for (index = 0; index < enic->rq_count; index++) {
 163                 if (!enic->rq[enic_rte_rq_idx_to_sop_idx(index)].ctrl)
 164                         break;
 165         }
 166         if (enic->rq_count != index)
 167                 return 0;
 168
 169         ret = enic_alloc_intr_resources(enic);
 170         if (ret) {
 171                 dev_err(enic, "alloc intr failed\n");
 172                 return ret;
 173         }
 174         enic_init_vnic_resources(enic);
 175
 176         ret = enic_setup_finish(enic);
 177         if (ret)
 178                 dev_err(enic, "setup could not be finished\n");
 179
 180         return ret;
 181 }
 182
 183 static int enicpmd_dev_tx_queue_setup(struct rte_eth_dev *eth_dev,
 184         uint16_t queue_idx,
 185         uint16_t nb_desc,
 186         unsigned int socket_id,
 187         __rte_unused const struct rte_eth_txconf *tx_conf)
 188 {
 189         int ret;
 190         struct enic *enic = pmd_priv(eth_dev);
 191
 192         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 193                 return -E_RTE_SECONDARY;
 194
 195         ENICPMD_FUNC_TRACE();
 196         RTE_ASSERT(queue_idx < enic->conf_wq_count);
 197         eth_dev->data->tx_queues[queue_idx] = (void *)&enic->wq[queue_idx];
 198
 199         ret = enic_alloc_wq(enic, queue_idx, socket_id, nb_desc);
 200         if (ret) {
 201                 dev_err(enic, "error in allocating wq\n");
 202                 return ret;
 203         }
 204
 205         return enicpmd_dev_setup_intr(enic);
 206 }
 207
 208 static int enicpmd_dev_tx_queue_start(struct rte_eth_dev *eth_dev,
 209         uint16_t queue_idx)
 210 {
 211         struct enic *enic = pmd_priv(eth_dev);
 212
 213         ENICPMD_FUNC_TRACE();
 214
 215         enic_start_wq(enic, queue_idx);
 216
 217         return 0;
 218 }
 219
 220 static int enicpmd_dev_tx_queue_stop(struct rte_eth_dev *eth_dev,
 221         uint16_t queue_idx)
 222 {
 223         int ret;
 224         struct enic *enic = pmd_priv(eth_dev);
 225
 226         ENICPMD_FUNC_TRACE();
 227
 228         ret = enic_stop_wq(enic, queue_idx);
 229         if (ret)
 230                 dev_err(enic, "error in stopping wq %d\n", queue_idx);
 231
 232         return ret;
 233 }
 234
 235 static int enicpmd_dev_rx_queue_start(struct rte_eth_dev *eth_dev,
 236         uint16_t queue_idx)
 237 {
 238         struct enic *enic = pmd_priv(eth_dev);
 239
 240         ENICPMD_FUNC_TRACE();
 241
 242         enic_start_rq(enic, queue_idx);
 243
 244         return 0;
 245 }
 246
 247 static int enicpmd_dev_rx_queue_stop(struct rte_eth_dev *eth_dev,
 248         uint16_t queue_idx)
 249 {
 250         int ret;
 251         struct enic *enic = pmd_priv(eth_dev);
 252
 253         ENICPMD_FUNC_TRACE();
 254
 255         ret = enic_stop_rq(enic, queue_idx);
 256         if (ret)
 257                 dev_err(enic, "error in stopping rq %d\n", queue_idx);
 258
 259         return ret;
 260 }
 261
 262 static void enicpmd_dev_rx_queue_release(void *rxq)
 263 {
 264         ENICPMD_FUNC_TRACE();
 265
 266         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 267                 return;
 268
 269         enic_free_rq(rxq);
 270 }
 271
 272 static uint32_t enicpmd_dev_rx_queue_count(struct rte_eth_dev *dev,
 273                                            uint16_t rx_queue_id)
 274 {
 275         struct enic *enic = pmd_priv(dev);
 276         uint32_t queue_count = 0;
 277         struct vnic_cq *cq;
 278         uint32_t cq_tail;
 279         uint16_t cq_idx;
 280         int rq_num;
 281
 282         rq_num = enic_rte_rq_idx_to_sop_idx(rx_queue_id);
 283         cq = &enic->cq[enic_cq_rq(enic, rq_num)];
 284         cq_idx = cq->to_clean;
 285
 286         cq_tail = ioread32(&cq->ctrl->cq_tail);
 287
 288         if (cq_tail < cq_idx)
 289                 cq_tail += cq->ring.desc_count;
 290
 291         queue_count = cq_tail - cq_idx;
 292
 293         return queue_count;
 294 }
 295
 296 static int enicpmd_dev_rx_queue_setup(struct rte_eth_dev *eth_dev,
 297         uint16_t queue_idx,
 298         uint16_t nb_desc,
 299         unsigned int socket_id,
 300         const struct rte_eth_rxconf *rx_conf,
 301         struct rte_mempool *mp)
 302 {
 303         int ret;
 304         struct enic *enic = pmd_priv(eth_dev);
 305
 306         ENICPMD_FUNC_TRACE();
 307
 308         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 309                 return -E_RTE_SECONDARY;
 310         RTE_ASSERT(enic_rte_rq_idx_to_sop_idx(queue_idx) < enic->conf_rq_count);
 311         eth_dev->data->rx_queues[queue_idx] =
 312                 (void *)&enic->rq[enic_rte_rq_idx_to_sop_idx(queue_idx)];
 313
 314         ret = enic_alloc_rq(enic, queue_idx, socket_id, mp, nb_desc,
 315                             rx_conf->rx_free_thresh);
 316         if (ret) {
 317                 dev_err(enic, "error in allocating rq\n");
 318                 return ret;
 319         }
 320
 321         return enicpmd_dev_setup_intr(enic);
 322 }
 323
 324 static int enicpmd_vlan_offload_set(struct rte_eth_dev *eth_dev, int mask)
 325 {
 326         struct enic *enic = pmd_priv(eth_dev);
 327         uint64_t offloads;
 328
 329         ENICPMD_FUNC_TRACE();
 330
 331         offloads = eth_dev->data->dev_conf.rxmode.offloads;
 332         if (mask & ETH_VLAN_STRIP_MASK) {
 333                 if (offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
 334                         enic->ig_vlan_strip_en = 1;
 335                 else
 336                         enic->ig_vlan_strip_en = 0;
 337         }
 338
 339         if ((mask & ETH_VLAN_FILTER_MASK) &&
 340             (offloads & DEV_RX_OFFLOAD_VLAN_FILTER)) {
 341                 dev_warning(enic,
 342                         "Configuration of VLAN filter is not supported\n");
 343         }
 344
 345         if ((mask & ETH_VLAN_EXTEND_MASK) &&
 346             (offloads & DEV_RX_OFFLOAD_VLAN_EXTEND)) {
 347                 dev_warning(enic,
 348                         "Configuration of extended VLAN is not supported\n");
 349         }
 350
 351         return enic_set_vlan_strip(enic);
 352 }
 353
 354 static int enicpmd_dev_configure(struct rte_eth_dev *eth_dev)
 355 {
 356         int ret;
 357         int mask;
 358         struct enic *enic = pmd_priv(eth_dev);
 359
 360         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 361                 return -E_RTE_SECONDARY;
 362
 363         ENICPMD_FUNC_TRACE();
 364         ret = enic_set_vnic_res(enic);
 365         if (ret) {
 366                 dev_err(enic, "Set vNIC resource num  failed, aborting\n");
 367                 return ret;
 368         }
 369
 370         enic->hw_ip_checksum = !!(eth_dev->data->dev_conf.rxmode.offloads &
 371                                   DEV_RX_OFFLOAD_CHECKSUM);
 372         /* All vlan offload masks to apply the current settings */
 373         mask = ETH_VLAN_STRIP_MASK |
 374                 ETH_VLAN_FILTER_MASK |
 375                 ETH_VLAN_EXTEND_MASK;
 376         ret = enicpmd_vlan_offload_set(eth_dev, mask);
 377         if (ret) {
 378                 dev_err(enic, "Failed to configure VLAN offloads\n");
 379                 return ret;
 380         }
 381         /*
 382          * Initialize RSS with the default reta and key. If the user key is
 383          * given (rx_adv_conf.rss_conf.rss_key), will use that instead of the
 384          * default key.
 385          */
 386         return enic_init_rss_nic_cfg(enic);
 387 }
 388
 389 /* Start the device.
 390  * It returns 0 on success.
 391  */
 392 static int enicpmd_dev_start(struct rte_eth_dev *eth_dev)
 393 {
 394         struct enic *enic = pmd_priv(eth_dev);
 395
 396         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 397                 return -E_RTE_SECONDARY;
 398
 399         ENICPMD_FUNC_TRACE();
 400         return enic_enable(enic);
 401 }
 402
 403 /*
 404  * Stop device: disable rx and tx functions to allow for reconfiguring.
 405  */
 406 static void enicpmd_dev_stop(struct rte_eth_dev *eth_dev)
 407 {
 408         struct rte_eth_link link;
 409         struct enic *enic = pmd_priv(eth_dev);
 410
 411         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 412                 return;
 413
 414         ENICPMD_FUNC_TRACE();
 415         enic_disable(enic);
 416
 417         memset(&link, 0, sizeof(link));
 418         rte_eth_linkstatus_set(eth_dev, &link);
 419 }
 420
 421 /*
 422  * Stop device.
 423  */
 424 static void enicpmd_dev_close(struct rte_eth_dev *eth_dev)
 425 {
 426         struct enic *enic = pmd_priv(eth_dev);
 427
 428         ENICPMD_FUNC_TRACE();
 429         enic_remove(enic);
 430 }
 431
 432 static int enicpmd_dev_link_update(struct rte_eth_dev *eth_dev,
 433         __rte_unused int wait_to_complete)
 434 {
 435         struct enic *enic = pmd_priv(eth_dev);
 436
 437         ENICPMD_FUNC_TRACE();
 438         return enic_link_update(enic);
 439 }
 440
 441 static int enicpmd_dev_stats_get(struct rte_eth_dev *eth_dev,
 442         struct rte_eth_stats *stats)
 443 {
 444         struct enic *enic = pmd_priv(eth_dev);
 445
 446         ENICPMD_FUNC_TRACE();
 447         return enic_dev_stats_get(enic, stats);
 448 }
 449
 450 static void enicpmd_dev_stats_reset(struct rte_eth_dev *eth_dev)
 451 {
 452         struct enic *enic = pmd_priv(eth_dev);
 453
 454         ENICPMD_FUNC_TRACE();
 455         enic_dev_stats_clear(enic);
 456 }
 457
 458 static void enicpmd_dev_info_get(struct rte_eth_dev *eth_dev,
 459         struct rte_eth_dev_info *device_info)
 460 {
 461         struct enic *enic = pmd_priv(eth_dev);
 462
 463         ENICPMD_FUNC_TRACE();
 464         /* Scattered Rx uses two receive queues per rx queue exposed to dpdk */
 465         device_info->max_rx_queues = enic->conf_rq_count / 2;
 466         device_info->max_tx_queues = enic->conf_wq_count;
 467         device_info->min_rx_bufsize = ENIC_MIN_MTU;
 468         /* "Max" mtu is not a typo. HW receives packet sizes up to the
 469          * max mtu regardless of the current mtu (vNIC's mtu). vNIC mtu is
 470          * a hint to the driver to size receive buffers accordingly so that
 471          * larger-than-vnic-mtu packets get truncated.. For DPDK, we let
 472          * the user decide the buffer size via rxmode.max_rx_pkt_len, basically
 473          * ignoring vNIC mtu.
 474          */
 475         device_info->max_rx_pktlen = enic_mtu_to_max_rx_pktlen(enic->max_mtu);
 476         device_info->max_mac_addrs = ENIC_MAX_MAC_ADDR;
 477         device_info->rx_offload_capa = enic->rx_offload_capa;
 478         device_info->tx_offload_capa = enic->tx_offload_capa;
 479         device_info->default_rxconf = (struct rte_eth_rxconf) {
 480                 .rx_free_thresh = ENIC_DEFAULT_RX_FREE_THRESH
 481         };
 482         device_info->reta_size = enic->reta_size;
 483         device_info->hash_key_size = enic->hash_key_size;
 484         device_info->flow_type_rss_offloads = enic->flow_type_rss_offloads;
 485 }
 486
 487 static const uint32_t *enicpmd_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 488 {
 489         static const uint32_t ptypes[] = {
 490                 RTE_PTYPE_L2_ETHER,
 491                 RTE_PTYPE_L2_ETHER_VLAN,
 492                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 493                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 494                 RTE_PTYPE_L4_TCP,
 495                 RTE_PTYPE_L4_UDP,
 496                 RTE_PTYPE_L4_FRAG,
 497                 RTE_PTYPE_L4_NONFRAG,
 498                 RTE_PTYPE_UNKNOWN
 499         };
 500
 501         if (dev->rx_pkt_burst == enic_recv_pkts)
 502                 return ptypes;
 503         return NULL;
 504 }
 505
 506 static void enicpmd_dev_promiscuous_enable(struct rte_eth_dev *eth_dev)
 507 {
 508         struct enic *enic = pmd_priv(eth_dev);
 509
 510         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 511                 return;
 512
 513         ENICPMD_FUNC_TRACE();
 514
 515         enic->promisc = 1;
 516         enic_add_packet_filter(enic);
 517 }
 518
 519 static void enicpmd_dev_promiscuous_disable(struct rte_eth_dev *eth_dev)
 520 {
 521         struct enic *enic = pmd_priv(eth_dev);
 522
 523         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 524                 return;
 525
 526         ENICPMD_FUNC_TRACE();
 527         enic->promisc = 0;
 528         enic_add_packet_filter(enic);
 529 }
 530
 531 static void enicpmd_dev_allmulticast_enable(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->allmulti = 1;
 540         enic_add_packet_filter(enic);
 541 }
 542
 543 static void enicpmd_dev_allmulticast_disable(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 = 0;
 552         enic_add_packet_filter(enic);
 553 }
 554
 555 static int enicpmd_add_mac_addr(struct rte_eth_dev *eth_dev,
 556         struct ether_addr *mac_addr,
 557         __rte_unused uint32_t index, __rte_unused uint32_t pool)
 558 {
 559         struct enic *enic = pmd_priv(eth_dev);
 560
 561         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 562                 return -E_RTE_SECONDARY;
 563
 564         ENICPMD_FUNC_TRACE();
 565         return enic_set_mac_address(enic, mac_addr->addr_bytes);
 566 }
 567
 568 static void enicpmd_remove_mac_addr(struct rte_eth_dev *eth_dev, uint32_t index)
 569 {
 570         struct enic *enic = pmd_priv(eth_dev);
 571
 572         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 573                 return;
 574
 575         ENICPMD_FUNC_TRACE();
 576         if (enic_del_mac_address(enic, index))
 577                 dev_err(enic, "del mac addr failed\n");
 578 }
 579
 580 static int enicpmd_set_mac_addr(struct rte_eth_dev *eth_dev,
 581                                 struct ether_addr *addr)
 582 {
 583         struct enic *enic = pmd_priv(eth_dev);
 584         int ret;
 585
 586         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 587                 return -E_RTE_SECONDARY;
 588
 589         ENICPMD_FUNC_TRACE();
 590         ret = enic_del_mac_address(enic, 0);
 591         if (ret)
 592                 return ret;
 593         return enic_set_mac_address(enic, addr->addr_bytes);
 594 }
 595
 596 static int enicpmd_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu)
 597 {
 598         struct enic *enic = pmd_priv(eth_dev);
 599
 600         ENICPMD_FUNC_TRACE();
 601         return enic_set_mtu(enic, mtu);
 602 }
 603
 604 static int enicpmd_dev_rss_reta_query(struct rte_eth_dev *dev,
 605                                       struct rte_eth_rss_reta_entry64
 606                                       *reta_conf,
 607                                       uint16_t reta_size)
 608 {
 609         struct enic *enic = pmd_priv(dev);
 610         uint16_t i, idx, shift;
 611
 612         ENICPMD_FUNC_TRACE();
 613         if (reta_size != ENIC_RSS_RETA_SIZE) {
 614                 dev_err(enic, "reta_query: wrong reta_size. given=%u expected=%u\n",
 615                         reta_size, ENIC_RSS_RETA_SIZE);
 616                 return -EINVAL;
 617         }
 618
 619         for (i = 0; i < reta_size; i++) {
 620                 idx = i / RTE_RETA_GROUP_SIZE;
 621                 shift = i % RTE_RETA_GROUP_SIZE;
 622                 if (reta_conf[idx].mask & (1ULL << shift))
 623                         reta_conf[idx].reta[shift] = enic_sop_rq_idx_to_rte_idx(
 624                                 enic->rss_cpu.cpu[i / 4].b[i % 4]);
 625         }
 626
 627         return 0;
 628 }
 629
 630 static int enicpmd_dev_rss_reta_update(struct rte_eth_dev *dev,
 631                                        struct rte_eth_rss_reta_entry64
 632                                        *reta_conf,
 633                                        uint16_t reta_size)
 634 {
 635         struct enic *enic = pmd_priv(dev);
 636         union vnic_rss_cpu rss_cpu;
 637         uint16_t i, idx, shift;
 638
 639         ENICPMD_FUNC_TRACE();
 640         if (reta_size != ENIC_RSS_RETA_SIZE) {
 641                 dev_err(enic, "reta_update: wrong reta_size. given=%u"
 642                         " expected=%u\n",
 643                         reta_size, ENIC_RSS_RETA_SIZE);
 644                 return -EINVAL;
 645         }
 646         /*
 647          * Start with the current reta and modify it per reta_conf, as we
 648          * need to push the entire reta even if we only modify one entry.
 649          */
 650         rss_cpu = enic->rss_cpu;
 651         for (i = 0; i < reta_size; i++) {
 652                 idx = i / RTE_RETA_GROUP_SIZE;
 653                 shift = i % RTE_RETA_GROUP_SIZE;
 654                 if (reta_conf[idx].mask & (1ULL << shift))
 655                         rss_cpu.cpu[i / 4].b[i % 4] =
 656                                 enic_rte_rq_idx_to_sop_idx(
 657                                         reta_conf[idx].reta[shift]);
 658         }
 659         return enic_set_rss_reta(enic, &rss_cpu);
 660 }
 661
 662 static int enicpmd_dev_rss_hash_update(struct rte_eth_dev *dev,
 663                                        struct rte_eth_rss_conf *rss_conf)
 664 {
 665         struct enic *enic = pmd_priv(dev);
 666
 667         ENICPMD_FUNC_TRACE();
 668         return enic_set_rss_conf(enic, rss_conf);
 669 }
 670
 671 static int enicpmd_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
 672                                          struct rte_eth_rss_conf *rss_conf)
 673 {
 674         struct enic *enic = pmd_priv(dev);
 675
 676         ENICPMD_FUNC_TRACE();
 677         if (rss_conf == NULL)
 678                 return -EINVAL;
 679         if (rss_conf->rss_key != NULL &&
 680             rss_conf->rss_key_len < ENIC_RSS_HASH_KEY_SIZE) {
 681                 dev_err(enic, "rss_hash_conf_get: wrong rss_key_len. given=%u"
 682                         " expected=%u+\n",
 683                         rss_conf->rss_key_len, ENIC_RSS_HASH_KEY_SIZE);
 684                 return -EINVAL;
 685         }
 686         rss_conf->rss_hf = enic->rss_hf;
 687         if (rss_conf->rss_key != NULL) {
 688                 int i;
 689                 for (i = 0; i < ENIC_RSS_HASH_KEY_SIZE; i++) {
 690                         rss_conf->rss_key[i] =
 691                                 enic->rss_key.key[i / 10].b[i % 10];
 692                 }
 693                 rss_conf->rss_key_len = ENIC_RSS_HASH_KEY_SIZE;
 694         }
 695         return 0;
 696 }
 697
 698 static void enicpmd_dev_rxq_info_get(struct rte_eth_dev *dev,
 699                                      uint16_t rx_queue_id,
 700                                      struct rte_eth_rxq_info *qinfo)
 701 {
 702         struct enic *enic = pmd_priv(dev);
 703         struct vnic_rq *rq_sop;
 704         struct vnic_rq *rq_data;
 705         struct rte_eth_rxconf *conf;
 706         uint16_t sop_queue_idx;
 707         uint16_t data_queue_idx;
 708
 709         ENICPMD_FUNC_TRACE();
 710         sop_queue_idx = enic_rte_rq_idx_to_sop_idx(rx_queue_id);
 711         data_queue_idx = enic_rte_rq_idx_to_data_idx(rx_queue_id);
 712         rq_sop = &enic->rq[sop_queue_idx];
 713         rq_data = &enic->rq[data_queue_idx]; /* valid if data_queue_enable */
 714         qinfo->mp = rq_sop->mp;
 715         qinfo->scattered_rx = rq_sop->data_queue_enable;
 716         qinfo->nb_desc = rq_sop->ring.desc_count;
 717         if (qinfo->scattered_rx)
 718                 qinfo->nb_desc += rq_data->ring.desc_count;
 719         conf = &qinfo->conf;
 720         memset(conf, 0, sizeof(*conf));
 721         conf->rx_free_thresh = rq_sop->rx_free_thresh;
 722         conf->rx_drop_en = 1;
 723         /*
 724          * Except VLAN stripping (port setting), all the checksum offloads
 725          * are always enabled.
 726          */
 727         conf->offloads = enic->rx_offload_capa;
 728         if (!enic->ig_vlan_strip_en)
 729                 conf->offloads &= ~DEV_RX_OFFLOAD_VLAN_STRIP;
 730         /* rx_thresh and other fields are not applicable for enic */
 731 }
 732
 733 static void enicpmd_dev_txq_info_get(struct rte_eth_dev *dev,
 734                                      uint16_t tx_queue_id,
 735                                      struct rte_eth_txq_info *qinfo)
 736 {
 737         struct enic *enic = pmd_priv(dev);
 738         struct vnic_wq *wq = &enic->wq[tx_queue_id];
 739
 740         ENICPMD_FUNC_TRACE();
 741         qinfo->nb_desc = wq->ring.desc_count;
 742         memset(&qinfo->conf, 0, sizeof(qinfo->conf));
 743         qinfo->conf.offloads = enic->tx_offload_capa;
 744         /* tx_thresh, and all the other fields are not applicable for enic */
 745 }
 746
 747 static int enicpmd_dev_rx_queue_intr_enable(struct rte_eth_dev *eth_dev,
 748                                             uint16_t rx_queue_id)
 749 {
 750         struct enic *enic = pmd_priv(eth_dev);
 751
 752         ENICPMD_FUNC_TRACE();
 753         vnic_intr_unmask(&enic->intr[rx_queue_id + ENICPMD_RXQ_INTR_OFFSET]);
 754         return 0;
 755 }
 756
 757 static int enicpmd_dev_rx_queue_intr_disable(struct rte_eth_dev *eth_dev,
 758                                              uint16_t rx_queue_id)
 759 {
 760         struct enic *enic = pmd_priv(eth_dev);
 761
 762         ENICPMD_FUNC_TRACE();
 763         vnic_intr_mask(&enic->intr[rx_queue_id + ENICPMD_RXQ_INTR_OFFSET]);
 764         return 0;
 765 }
 766
 767 static const struct eth_dev_ops enicpmd_eth_dev_ops = {
 768         .dev_configure        = enicpmd_dev_configure,
 769         .dev_start            = enicpmd_dev_start,
 770         .dev_stop             = enicpmd_dev_stop,
 771         .dev_set_link_up      = NULL,
 772         .dev_set_link_down    = NULL,
 773         .dev_close            = enicpmd_dev_close,
 774         .promiscuous_enable   = enicpmd_dev_promiscuous_enable,
 775         .promiscuous_disable  = enicpmd_dev_promiscuous_disable,
 776         .allmulticast_enable  = enicpmd_dev_allmulticast_enable,
 777         .allmulticast_disable = enicpmd_dev_allmulticast_disable,
 778         .link_update          = enicpmd_dev_link_update,
 779         .stats_get            = enicpmd_dev_stats_get,
 780         .stats_reset          = enicpmd_dev_stats_reset,
 781         .queue_stats_mapping_set = NULL,
 782         .dev_infos_get        = enicpmd_dev_info_get,
 783         .dev_supported_ptypes_get = enicpmd_dev_supported_ptypes_get,
 784         .mtu_set              = enicpmd_mtu_set,
 785         .vlan_filter_set      = NULL,
 786         .vlan_tpid_set        = NULL,
 787         .vlan_offload_set     = enicpmd_vlan_offload_set,
 788         .vlan_strip_queue_set = NULL,
 789         .rx_queue_start       = enicpmd_dev_rx_queue_start,
 790         .rx_queue_stop        = enicpmd_dev_rx_queue_stop,
 791         .tx_queue_start       = enicpmd_dev_tx_queue_start,
 792         .tx_queue_stop        = enicpmd_dev_tx_queue_stop,
 793         .rx_queue_setup       = enicpmd_dev_rx_queue_setup,
 794         .rx_queue_release     = enicpmd_dev_rx_queue_release,
 795         .rx_queue_count       = enicpmd_dev_rx_queue_count,
 796         .rx_descriptor_done   = NULL,
 797         .tx_queue_setup       = enicpmd_dev_tx_queue_setup,
 798         .tx_queue_release     = enicpmd_dev_tx_queue_release,
 799         .rx_queue_intr_enable = enicpmd_dev_rx_queue_intr_enable,
 800         .rx_queue_intr_disable = enicpmd_dev_rx_queue_intr_disable,
 801         .rxq_info_get         = enicpmd_dev_rxq_info_get,
 802         .txq_info_get         = enicpmd_dev_txq_info_get,
 803         .dev_led_on           = NULL,
 804         .dev_led_off          = NULL,
 805         .flow_ctrl_get        = NULL,
 806         .flow_ctrl_set        = NULL,
 807         .priority_flow_ctrl_set = NULL,
 808         .mac_addr_add         = enicpmd_add_mac_addr,
 809         .mac_addr_remove      = enicpmd_remove_mac_addr,
 810         .mac_addr_set         = enicpmd_set_mac_addr,
 811         .filter_ctrl          = enicpmd_dev_filter_ctrl,
 812         .reta_query           = enicpmd_dev_rss_reta_query,
 813         .reta_update          = enicpmd_dev_rss_reta_update,
 814         .rss_hash_conf_get    = enicpmd_dev_rss_hash_conf_get,
 815         .rss_hash_update      = enicpmd_dev_rss_hash_update,
 816 };
 817
 818 static int enic_parse_disable_overlay(__rte_unused const char *key,
 819                                       const char *value,
 820                                       void *opaque)
 821 {
 822         struct enic *enic;
 823
 824         enic = (struct enic *)opaque;
 825         if (strcmp(value, "0") == 0) {
 826                 enic->disable_overlay = false;
 827         } else if (strcmp(value, "1") == 0) {
 828                 enic->disable_overlay = true;
 829         } else {
 830                 dev_err(enic, "Invalid value for " ENIC_DEVARG_DISABLE_OVERLAY
 831                         ": expected=0|1 given=%s\n", value);
 832                 return -EINVAL;
 833         }
 834         return 0;
 835 }
 836
 837 static int enic_check_devargs(struct rte_eth_dev *dev)
 838 {
 839         static const char *const valid_keys[] = {
 840                 ENIC_DEVARG_DISABLE_OVERLAY, NULL};
 841         struct enic *enic = pmd_priv(dev);
 842         struct rte_kvargs *kvlist;
 843
 844         ENICPMD_FUNC_TRACE();
 845
 846         enic->disable_overlay = false;
 847         if (!dev->device->devargs)
 848                 return 0;
 849         kvlist = rte_kvargs_parse(dev->device->devargs->args, valid_keys);
 850         if (!kvlist)
 851                 return -EINVAL;
 852         if (rte_kvargs_process(kvlist, ENIC_DEVARG_DISABLE_OVERLAY,
 853                                enic_parse_disable_overlay, enic) < 0) {
 854                 rte_kvargs_free(kvlist);
 855                 return -EINVAL;
 856         }
 857         rte_kvargs_free(kvlist);
 858         return 0;
 859 }
 860
 861 struct enic *enicpmd_list_head = NULL;
 862 /* Initialize the driver
 863  * It returns 0 on success.
 864  */
 865 static int eth_enicpmd_dev_init(struct rte_eth_dev *eth_dev)
 866 {
 867         struct rte_pci_device *pdev;
 868         struct rte_pci_addr *addr;
 869         struct enic *enic = pmd_priv(eth_dev);
 870         int err;
 871
 872         ENICPMD_FUNC_TRACE();
 873
 874         enic->port_id = eth_dev->data->port_id;
 875         enic->rte_dev = eth_dev;
 876         eth_dev->dev_ops = &enicpmd_eth_dev_ops;
 877         eth_dev->rx_pkt_burst = &enic_recv_pkts;
 878         eth_dev->tx_pkt_burst = &enic_xmit_pkts;
 879         eth_dev->tx_pkt_prepare = &enic_prep_pkts;
 880
 881         pdev = RTE_ETH_DEV_TO_PCI(eth_dev);
 882         rte_eth_copy_pci_info(eth_dev, pdev);
 883         enic->pdev = pdev;
 884         addr = &pdev->addr;
 885
 886         snprintf(enic->bdf_name, ENICPMD_BDF_LENGTH, "%04x:%02x:%02x.%x",
 887                 addr->domain, addr->bus, addr->devid, addr->function);
 888
 889         err = enic_check_devargs(eth_dev);
 890         if (err)
 891                 return err;
 892         return enic_probe(enic);
 893 }
 894
 895 static int eth_enic_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
 896         struct rte_pci_device *pci_dev)
 897 {
 898         return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct enic),
 899                 eth_enicpmd_dev_init);
 900 }
 901
 902 static int eth_enic_pci_remove(struct rte_pci_device *pci_dev)
 903 {
 904         return rte_eth_dev_pci_generic_remove(pci_dev, NULL);
 905 }
 906
 907 static struct rte_pci_driver rte_enic_pmd = {
 908         .id_table = pci_id_enic_map,
 909         .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC,
 910         .probe = eth_enic_pci_probe,
 911         .remove = eth_enic_pci_remove,
 912 };
 913
 914 RTE_PMD_REGISTER_PCI(net_enic, rte_enic_pmd);
 915 RTE_PMD_REGISTER_PCI_TABLE(net_enic, pci_id_enic_map);
 916 RTE_PMD_REGISTER_KMOD_DEP(net_enic, "* igb_uio | uio_pci_generic | vfio-pci");
 917 RTE_PMD_REGISTER_PARAM_STRING(net_enic,
 918                               ENIC_DEVARG_DISABLE_OVERLAY "=<0|1> ");