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 ENICPMD_FUNC_TRACE() PMD_INIT_LOG(DEBUG, " >>")
  28
  29 /*
  30  * The set of PCI devices this driver supports
  31  */
  32 #define CISCO_PCI_VENDOR_ID 0x1137
  33 static const struct rte_pci_id pci_id_enic_map[] = {
  34         { RTE_PCI_DEVICE(CISCO_PCI_VENDOR_ID, PCI_DEVICE_ID_CISCO_VIC_ENET) },
  35         { RTE_PCI_DEVICE(CISCO_PCI_VENDOR_ID, PCI_DEVICE_ID_CISCO_VIC_ENET_VF) },
  36         {.vendor_id = 0, /* sentinel */},
  37 };
  38
  39 #define ENIC_DEVARG_DISABLE_OVERLAY "disable-overlay"
  40 #define ENIC_DEVARG_IG_VLAN_REWRITE "ig-vlan-rewrite"
  41
  42 RTE_INIT(enicpmd_init_log);
  43 static void
  44 enicpmd_init_log(void)
  45 {
  46         enicpmd_logtype_init = rte_log_register("pmd.net.enic.init");
  47         if (enicpmd_logtype_init >= 0)
  48                 rte_log_set_level(enicpmd_logtype_init, RTE_LOG_NOTICE);
  49         enicpmd_logtype_flow = rte_log_register("pmd.net.enic.flow");
  50         if (enicpmd_logtype_flow >= 0)
  51                 rte_log_set_level(enicpmd_logtype_flow, RTE_LOG_NOTICE);
  52 }
  53
  54 static int
  55 enicpmd_fdir_ctrl_func(struct rte_eth_dev *eth_dev,
  56                         enum rte_filter_op filter_op, void *arg)
  57 {
  58         struct enic *enic = pmd_priv(eth_dev);
  59         int ret = 0;
  60
  61         ENICPMD_FUNC_TRACE();
  62         if (filter_op == RTE_ETH_FILTER_NOP)
  63                 return 0;
  64
  65         if (arg == NULL && filter_op != RTE_ETH_FILTER_FLUSH)
  66                 return -EINVAL;
  67
  68         switch (filter_op) {
  69         case RTE_ETH_FILTER_ADD:
  70         case RTE_ETH_FILTER_UPDATE:
  71                 ret = enic_fdir_add_fltr(enic,
  72                         (struct rte_eth_fdir_filter *)arg);
  73                 break;
  74
  75         case RTE_ETH_FILTER_DELETE:
  76                 ret = enic_fdir_del_fltr(enic,
  77                         (struct rte_eth_fdir_filter *)arg);
  78                 break;
  79
  80         case RTE_ETH_FILTER_STATS:
  81                 enic_fdir_stats_get(enic, (struct rte_eth_fdir_stats *)arg);
  82                 break;
  83
  84         case RTE_ETH_FILTER_FLUSH:
  85                 dev_warning(enic, "unsupported operation %u", filter_op);
  86                 ret = -ENOTSUP;
  87                 break;
  88         case RTE_ETH_FILTER_INFO:
  89                 enic_fdir_info_get(enic, (struct rte_eth_fdir_info *)arg);
  90                 break;
  91         default:
  92                 dev_err(enic, "unknown operation %u", filter_op);
  93                 ret = -EINVAL;
  94                 break;
  95         }
  96         return ret;
  97 }
  98
  99 static int
 100 enicpmd_dev_filter_ctrl(struct rte_eth_dev *dev,
 101                      enum rte_filter_type filter_type,
 102                      enum rte_filter_op filter_op,
 103                      void *arg)
 104 {
 105         int ret = 0;
 106
 107         ENICPMD_FUNC_TRACE();
 108
 109         switch (filter_type) {
 110         case RTE_ETH_FILTER_GENERIC:
 111                 if (filter_op != RTE_ETH_FILTER_GET)
 112                         return -EINVAL;
 113                 *(const void **)arg = &enic_flow_ops;
 114                 break;
 115         case RTE_ETH_FILTER_FDIR:
 116                 ret = enicpmd_fdir_ctrl_func(dev, filter_op, arg);
 117                 break;
 118         default:
 119                 dev_warning(enic, "Filter type (%d) not supported",
 120                         filter_type);
 121                 ret = -EINVAL;
 122                 break;
 123         }
 124
 125         return ret;
 126 }
 127
 128 static void enicpmd_dev_tx_queue_release(void *txq)
 129 {
 130         ENICPMD_FUNC_TRACE();
 131
 132         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 133                 return;
 134
 135         enic_free_wq(txq);
 136 }
 137
 138 static int enicpmd_dev_setup_intr(struct enic *enic)
 139 {
 140         int ret;
 141         unsigned int index;
 142
 143         ENICPMD_FUNC_TRACE();
 144
 145         /* Are we done with the init of all the queues? */
 146         for (index = 0; index < enic->cq_count; index++) {
 147                 if (!enic->cq[index].ctrl)
 148                         break;
 149         }
 150         if (enic->cq_count != index)
 151                 return 0;
 152         for (index = 0; index < enic->wq_count; index++) {
 153                 if (!enic->wq[index].ctrl)
 154                         break;
 155         }
 156         if (enic->wq_count != index)
 157                 return 0;
 158         /* check start of packet (SOP) RQs only in case scatter is disabled. */
 159         for (index = 0; index < enic->rq_count; index++) {
 160                 if (!enic->rq[enic_rte_rq_idx_to_sop_idx(index)].ctrl)
 161                         break;
 162         }
 163         if (enic->rq_count != index)
 164                 return 0;
 165
 166         ret = enic_alloc_intr_resources(enic);
 167         if (ret) {
 168                 dev_err(enic, "alloc intr failed\n");
 169                 return ret;
 170         }
 171         enic_init_vnic_resources(enic);
 172
 173         ret = enic_setup_finish(enic);
 174         if (ret)
 175                 dev_err(enic, "setup could not be finished\n");
 176
 177         return ret;
 178 }
 179
 180 static int enicpmd_dev_tx_queue_setup(struct rte_eth_dev *eth_dev,
 181         uint16_t queue_idx,
 182         uint16_t nb_desc,
 183         unsigned int socket_id,
 184         const struct rte_eth_txconf *tx_conf)
 185 {
 186         int ret;
 187         struct enic *enic = pmd_priv(eth_dev);
 188         struct vnic_wq *wq;
 189
 190         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 191                 return -E_RTE_SECONDARY;
 192
 193         ENICPMD_FUNC_TRACE();
 194         RTE_ASSERT(queue_idx < enic->conf_wq_count);
 195         wq = &enic->wq[queue_idx];
 196         wq->offloads = tx_conf->offloads |
 197                 eth_dev->data->dev_conf.txmode.offloads;
 198         eth_dev->data->tx_queues[queue_idx] = (void *)wq;
 199
 200         ret = enic_alloc_wq(enic, queue_idx, socket_id, nb_desc);
 201         if (ret) {
 202                 dev_err(enic, "error in allocating wq\n");
 203                 return ret;
 204         }
 205
 206         return enicpmd_dev_setup_intr(enic);
 207 }
 208
 209 static int enicpmd_dev_tx_queue_start(struct rte_eth_dev *eth_dev,
 210         uint16_t queue_idx)
 211 {
 212         struct enic *enic = pmd_priv(eth_dev);
 213
 214         ENICPMD_FUNC_TRACE();
 215
 216         enic_start_wq(enic, queue_idx);
 217
 218         return 0;
 219 }
 220
 221 static int enicpmd_dev_tx_queue_stop(struct rte_eth_dev *eth_dev,
 222         uint16_t queue_idx)
 223 {
 224         int ret;
 225         struct enic *enic = pmd_priv(eth_dev);
 226
 227         ENICPMD_FUNC_TRACE();
 228
 229         ret = enic_stop_wq(enic, queue_idx);
 230         if (ret)
 231                 dev_err(enic, "error in stopping wq %d\n", queue_idx);
 232
 233         return ret;
 234 }
 235
 236 static int enicpmd_dev_rx_queue_start(struct rte_eth_dev *eth_dev,
 237         uint16_t queue_idx)
 238 {
 239         struct enic *enic = pmd_priv(eth_dev);
 240
 241         ENICPMD_FUNC_TRACE();
 242
 243         enic_start_rq(enic, queue_idx);
 244
 245         return 0;
 246 }
 247
 248 static int enicpmd_dev_rx_queue_stop(struct rte_eth_dev *eth_dev,
 249         uint16_t queue_idx)
 250 {
 251         int ret;
 252         struct enic *enic = pmd_priv(eth_dev);
 253
 254         ENICPMD_FUNC_TRACE();
 255
 256         ret = enic_stop_rq(enic, queue_idx);
 257         if (ret)
 258                 dev_err(enic, "error in stopping rq %d\n", queue_idx);
 259
 260         return ret;
 261 }
 262
 263 static void enicpmd_dev_rx_queue_release(void *rxq)
 264 {
 265         ENICPMD_FUNC_TRACE();
 266
 267         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 268                 return;
 269
 270         enic_free_rq(rxq);
 271 }
 272
 273 static uint32_t enicpmd_dev_rx_queue_count(struct rte_eth_dev *dev,
 274                                            uint16_t rx_queue_id)
 275 {
 276         struct enic *enic = pmd_priv(dev);
 277         uint32_t queue_count = 0;
 278         struct vnic_cq *cq;
 279         uint32_t cq_tail;
 280         uint16_t cq_idx;
 281         int rq_num;
 282
 283         rq_num = enic_rte_rq_idx_to_sop_idx(rx_queue_id);
 284         cq = &enic->cq[enic_cq_rq(enic, rq_num)];
 285         cq_idx = cq->to_clean;
 286
 287         cq_tail = ioread32(&cq->ctrl->cq_tail);
 288
 289         if (cq_tail < cq_idx)
 290                 cq_tail += cq->ring.desc_count;
 291
 292         queue_count = cq_tail - cq_idx;
 293
 294         return queue_count;
 295 }
 296
 297 static int enicpmd_dev_rx_queue_setup(struct rte_eth_dev *eth_dev,
 298         uint16_t queue_idx,
 299         uint16_t nb_desc,
 300         unsigned int socket_id,
 301         const struct rte_eth_rxconf *rx_conf,
 302         struct rte_mempool *mp)
 303 {
 304         int ret;
 305         struct enic *enic = pmd_priv(eth_dev);
 306
 307         ENICPMD_FUNC_TRACE();
 308
 309         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 310                 return -E_RTE_SECONDARY;
 311         RTE_ASSERT(enic_rte_rq_idx_to_sop_idx(queue_idx) < enic->conf_rq_count);
 312         eth_dev->data->rx_queues[queue_idx] =
 313                 (void *)&enic->rq[enic_rte_rq_idx_to_sop_idx(queue_idx)];
 314
 315         ret = enic_alloc_rq(enic, queue_idx, socket_id, mp, nb_desc,
 316                             rx_conf->rx_free_thresh);
 317         if (ret) {
 318                 dev_err(enic, "error in allocating rq\n");
 319                 return ret;
 320         }
 321
 322         return enicpmd_dev_setup_intr(enic);
 323 }
 324
 325 static int enicpmd_vlan_offload_set(struct rte_eth_dev *eth_dev, int mask)
 326 {
 327         struct enic *enic = pmd_priv(eth_dev);
 328         uint64_t offloads;
 329
 330         ENICPMD_FUNC_TRACE();
 331
 332         offloads = eth_dev->data->dev_conf.rxmode.offloads;
 333         if (mask & ETH_VLAN_STRIP_MASK) {
 334                 if (offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
 335                         enic->ig_vlan_strip_en = 1;
 336                 else
 337                         enic->ig_vlan_strip_en = 0;
 338         }
 339
 340         if ((mask & ETH_VLAN_FILTER_MASK) &&
 341             (offloads & DEV_RX_OFFLOAD_VLAN_FILTER)) {
 342                 dev_warning(enic,
 343                         "Configuration of VLAN filter is not supported\n");
 344         }
 345
 346         if ((mask & ETH_VLAN_EXTEND_MASK) &&
 347             (offloads & DEV_RX_OFFLOAD_VLAN_EXTEND)) {
 348                 dev_warning(enic,
 349                         "Configuration of extended VLAN is not supported\n");
 350         }
 351
 352         return enic_set_vlan_strip(enic);
 353 }
 354
 355 static int enicpmd_dev_configure(struct rte_eth_dev *eth_dev)
 356 {
 357         int ret;
 358         int mask;
 359         struct enic *enic = pmd_priv(eth_dev);
 360
 361         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 362                 return -E_RTE_SECONDARY;
 363
 364         ENICPMD_FUNC_TRACE();
 365         ret = enic_set_vnic_res(enic);
 366         if (ret) {
 367                 dev_err(enic, "Set vNIC resource num  failed, aborting\n");
 368                 return ret;
 369         }
 370
 371         enic->hw_ip_checksum = !!(eth_dev->data->dev_conf.rxmode.offloads &
 372                                   DEV_RX_OFFLOAD_CHECKSUM);
 373         /* All vlan offload masks to apply the current settings */
 374         mask = ETH_VLAN_STRIP_MASK |
 375                 ETH_VLAN_FILTER_MASK |
 376                 ETH_VLAN_EXTEND_MASK;
 377         ret = enicpmd_vlan_offload_set(eth_dev, mask);
 378         if (ret) {
 379                 dev_err(enic, "Failed to configure VLAN offloads\n");
 380                 return ret;
 381         }
 382         /*
 383          * Initialize RSS with the default reta and key. If the user key is
 384          * given (rx_adv_conf.rss_conf.rss_key), will use that instead of the
 385          * default key.
 386          */
 387         return enic_init_rss_nic_cfg(enic);
 388 }
 389
 390 /* Start the device.
 391  * It returns 0 on success.
 392  */
 393 static int enicpmd_dev_start(struct rte_eth_dev *eth_dev)
 394 {
 395         struct enic *enic = pmd_priv(eth_dev);
 396
 397         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 398                 return -E_RTE_SECONDARY;
 399
 400         ENICPMD_FUNC_TRACE();
 401         return enic_enable(enic);
 402 }
 403
 404 /*
 405  * Stop device: disable rx and tx functions to allow for reconfiguring.
 406  */
 407 static void enicpmd_dev_stop(struct rte_eth_dev *eth_dev)
 408 {
 409         struct rte_eth_link link;
 410         struct enic *enic = pmd_priv(eth_dev);
 411
 412         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 413                 return;
 414
 415         ENICPMD_FUNC_TRACE();
 416         enic_disable(enic);
 417
 418         memset(&link, 0, sizeof(link));
 419         rte_eth_linkstatus_set(eth_dev, &link);
 420 }
 421
 422 /*
 423  * Stop device.
 424  */
 425 static void enicpmd_dev_close(struct rte_eth_dev *eth_dev)
 426 {
 427         struct enic *enic = pmd_priv(eth_dev);
 428
 429         ENICPMD_FUNC_TRACE();
 430         enic_remove(enic);
 431 }
 432
 433 static int enicpmd_dev_link_update(struct rte_eth_dev *eth_dev,
 434         __rte_unused int wait_to_complete)
 435 {
 436         struct enic *enic = pmd_priv(eth_dev);
 437
 438         ENICPMD_FUNC_TRACE();
 439         return enic_link_update(enic);
 440 }
 441
 442 static int enicpmd_dev_stats_get(struct rte_eth_dev *eth_dev,
 443         struct rte_eth_stats *stats)
 444 {
 445         struct enic *enic = pmd_priv(eth_dev);
 446
 447         ENICPMD_FUNC_TRACE();
 448         return enic_dev_stats_get(enic, stats);
 449 }
 450
 451 static void enicpmd_dev_stats_reset(struct rte_eth_dev *eth_dev)
 452 {
 453         struct enic *enic = pmd_priv(eth_dev);
 454
 455         ENICPMD_FUNC_TRACE();
 456         enic_dev_stats_clear(enic);
 457 }
 458
 459 static void enicpmd_dev_info_get(struct rte_eth_dev *eth_dev,
 460         struct rte_eth_dev_info *device_info)
 461 {
 462         struct enic *enic = pmd_priv(eth_dev);
 463
 464         ENICPMD_FUNC_TRACE();
 465         /* Scattered Rx uses two receive queues per rx queue exposed to dpdk */
 466         device_info->max_rx_queues = enic->conf_rq_count / 2;
 467         device_info->max_tx_queues = enic->conf_wq_count;
 468         device_info->min_rx_bufsize = ENIC_MIN_MTU;
 469         /* "Max" mtu is not a typo. HW receives packet sizes up to the
 470          * max mtu regardless of the current mtu (vNIC's mtu). vNIC mtu is
 471          * a hint to the driver to size receive buffers accordingly so that
 472          * larger-than-vnic-mtu packets get truncated.. For DPDK, we let
 473          * the user decide the buffer size via rxmode.max_rx_pkt_len, basically
 474          * ignoring vNIC mtu.
 475          */
 476         device_info->max_rx_pktlen = enic_mtu_to_max_rx_pktlen(enic->max_mtu);
 477         device_info->max_mac_addrs = ENIC_MAX_MAC_ADDR;
 478         device_info->rx_offload_capa = enic->rx_offload_capa;
 479         device_info->tx_offload_capa = enic->tx_offload_capa;
 480         device_info->tx_queue_offload_capa = enic->tx_queue_offload_capa;
 481         device_info->default_rxconf = (struct rte_eth_rxconf) {
 482                 .rx_free_thresh = ENIC_DEFAULT_RX_FREE_THRESH
 483         };
 484         device_info->reta_size = enic->reta_size;
 485         device_info->hash_key_size = enic->hash_key_size;
 486         device_info->flow_type_rss_offloads = enic->flow_type_rss_offloads;
 487         device_info->rx_desc_lim = (struct rte_eth_desc_lim) {
 488                 .nb_max = enic->config.rq_desc_count,
 489                 .nb_min = ENIC_MIN_RQ_DESCS,
 490                 .nb_align = ENIC_ALIGN_DESCS,
 491         };
 492         device_info->tx_desc_lim = (struct rte_eth_desc_lim) {
 493                 .nb_max = enic->config.wq_desc_count,
 494                 .nb_min = ENIC_MIN_WQ_DESCS,
 495                 .nb_align = ENIC_ALIGN_DESCS,
 496                 .nb_seg_max = ENIC_TX_XMIT_MAX,
 497                 .nb_mtu_seg_max = ENIC_NON_TSO_MAX_DESC,
 498         };
 499         device_info->default_rxportconf = (struct rte_eth_dev_portconf) {
 500                 .burst_size = ENIC_DEFAULT_RX_BURST,
 501                 .ring_size = RTE_MIN(device_info->rx_desc_lim.nb_max,
 502                         ENIC_DEFAULT_RX_RING_SIZE),
 503                 .nb_queues = ENIC_DEFAULT_RX_RINGS,
 504         };
 505         device_info->default_txportconf = (struct rte_eth_dev_portconf) {
 506                 .burst_size = ENIC_DEFAULT_TX_BURST,
 507                 .ring_size = RTE_MIN(device_info->tx_desc_lim.nb_max,
 508                         ENIC_DEFAULT_TX_RING_SIZE),
 509                 .nb_queues = ENIC_DEFAULT_TX_RINGS,
 510         };
 511 }
 512
 513 static const uint32_t *enicpmd_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 514 {
 515         static const uint32_t ptypes[] = {
 516                 RTE_PTYPE_L2_ETHER,
 517                 RTE_PTYPE_L2_ETHER_VLAN,
 518                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 519                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 520                 RTE_PTYPE_L4_TCP,
 521                 RTE_PTYPE_L4_UDP,
 522                 RTE_PTYPE_L4_FRAG,
 523                 RTE_PTYPE_L4_NONFRAG,
 524                 RTE_PTYPE_UNKNOWN
 525         };
 526
 527         if (dev->rx_pkt_burst == enic_recv_pkts)
 528                 return ptypes;
 529         return NULL;
 530 }
 531
 532 static void enicpmd_dev_promiscuous_enable(struct rte_eth_dev *eth_dev)
 533 {
 534         struct enic *enic = pmd_priv(eth_dev);
 535
 536         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 537                 return;
 538
 539         ENICPMD_FUNC_TRACE();
 540
 541         enic->promisc = 1;
 542         enic_add_packet_filter(enic);
 543 }
 544
 545 static void enicpmd_dev_promiscuous_disable(struct rte_eth_dev *eth_dev)
 546 {
 547         struct enic *enic = pmd_priv(eth_dev);
 548
 549         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 550                 return;
 551
 552         ENICPMD_FUNC_TRACE();
 553         enic->promisc = 0;
 554         enic_add_packet_filter(enic);
 555 }
 556
 557 static void enicpmd_dev_allmulticast_enable(struct rte_eth_dev *eth_dev)
 558 {
 559         struct enic *enic = pmd_priv(eth_dev);
 560
 561         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 562                 return;
 563
 564         ENICPMD_FUNC_TRACE();
 565         enic->allmulti = 1;
 566         enic_add_packet_filter(enic);
 567 }
 568
 569 static void enicpmd_dev_allmulticast_disable(struct rte_eth_dev *eth_dev)
 570 {
 571         struct enic *enic = pmd_priv(eth_dev);
 572
 573         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 574                 return;
 575
 576         ENICPMD_FUNC_TRACE();
 577         enic->allmulti = 0;
 578         enic_add_packet_filter(enic);
 579 }
 580
 581 static int enicpmd_add_mac_addr(struct rte_eth_dev *eth_dev,
 582         struct ether_addr *mac_addr,
 583         __rte_unused uint32_t index, __rte_unused uint32_t pool)
 584 {
 585         struct enic *enic = pmd_priv(eth_dev);
 586
 587         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 588                 return -E_RTE_SECONDARY;
 589
 590         ENICPMD_FUNC_TRACE();
 591         return enic_set_mac_address(enic, mac_addr->addr_bytes);
 592 }
 593
 594 static void enicpmd_remove_mac_addr(struct rte_eth_dev *eth_dev, uint32_t index)
 595 {
 596         struct enic *enic = pmd_priv(eth_dev);
 597
 598         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 599                 return;
 600
 601         ENICPMD_FUNC_TRACE();
 602         if (enic_del_mac_address(enic, index))
 603                 dev_err(enic, "del mac addr failed\n");
 604 }
 605
 606 static int enicpmd_set_mac_addr(struct rte_eth_dev *eth_dev,
 607                                 struct ether_addr *addr)
 608 {
 609         struct enic *enic = pmd_priv(eth_dev);
 610         int ret;
 611
 612         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 613                 return -E_RTE_SECONDARY;
 614
 615         ENICPMD_FUNC_TRACE();
 616         ret = enic_del_mac_address(enic, 0);
 617         if (ret)
 618                 return ret;
 619         return enic_set_mac_address(enic, addr->addr_bytes);
 620 }
 621
 622 static int enicpmd_mtu_set(struct rte_eth_dev *eth_dev, uint16_t mtu)
 623 {
 624         struct enic *enic = pmd_priv(eth_dev);
 625
 626         ENICPMD_FUNC_TRACE();
 627         return enic_set_mtu(enic, mtu);
 628 }
 629
 630 static int enicpmd_dev_rss_reta_query(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         uint16_t i, idx, shift;
 637
 638         ENICPMD_FUNC_TRACE();
 639         if (reta_size != ENIC_RSS_RETA_SIZE) {
 640                 dev_err(enic, "reta_query: wrong reta_size. given=%u expected=%u\n",
 641                         reta_size, ENIC_RSS_RETA_SIZE);
 642                 return -EINVAL;
 643         }
 644
 645         for (i = 0; i < reta_size; i++) {
 646                 idx = i / RTE_RETA_GROUP_SIZE;
 647                 shift = i % RTE_RETA_GROUP_SIZE;
 648                 if (reta_conf[idx].mask & (1ULL << shift))
 649                         reta_conf[idx].reta[shift] = enic_sop_rq_idx_to_rte_idx(
 650                                 enic->rss_cpu.cpu[i / 4].b[i % 4]);
 651         }
 652
 653         return 0;
 654 }
 655
 656 static int enicpmd_dev_rss_reta_update(struct rte_eth_dev *dev,
 657                                        struct rte_eth_rss_reta_entry64
 658                                        *reta_conf,
 659                                        uint16_t reta_size)
 660 {
 661         struct enic *enic = pmd_priv(dev);
 662         union vnic_rss_cpu rss_cpu;
 663         uint16_t i, idx, shift;
 664
 665         ENICPMD_FUNC_TRACE();
 666         if (reta_size != ENIC_RSS_RETA_SIZE) {
 667                 dev_err(enic, "reta_update: wrong reta_size. given=%u"
 668                         " expected=%u\n",
 669                         reta_size, ENIC_RSS_RETA_SIZE);
 670                 return -EINVAL;
 671         }
 672         /*
 673          * Start with the current reta and modify it per reta_conf, as we
 674          * need to push the entire reta even if we only modify one entry.
 675          */
 676         rss_cpu = enic->rss_cpu;
 677         for (i = 0; i < reta_size; i++) {
 678                 idx = i / RTE_RETA_GROUP_SIZE;
 679                 shift = i % RTE_RETA_GROUP_SIZE;
 680                 if (reta_conf[idx].mask & (1ULL << shift))
 681                         rss_cpu.cpu[i / 4].b[i % 4] =
 682                                 enic_rte_rq_idx_to_sop_idx(
 683                                         reta_conf[idx].reta[shift]);
 684         }
 685         return enic_set_rss_reta(enic, &rss_cpu);
 686 }
 687
 688 static int enicpmd_dev_rss_hash_update(struct rte_eth_dev *dev,
 689                                        struct rte_eth_rss_conf *rss_conf)
 690 {
 691         struct enic *enic = pmd_priv(dev);
 692
 693         ENICPMD_FUNC_TRACE();
 694         return enic_set_rss_conf(enic, rss_conf);
 695 }
 696
 697 static int enicpmd_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
 698                                          struct rte_eth_rss_conf *rss_conf)
 699 {
 700         struct enic *enic = pmd_priv(dev);
 701
 702         ENICPMD_FUNC_TRACE();
 703         if (rss_conf == NULL)
 704                 return -EINVAL;
 705         if (rss_conf->rss_key != NULL &&
 706             rss_conf->rss_key_len < ENIC_RSS_HASH_KEY_SIZE) {
 707                 dev_err(enic, "rss_hash_conf_get: wrong rss_key_len. given=%u"
 708                         " expected=%u+\n",
 709                         rss_conf->rss_key_len, ENIC_RSS_HASH_KEY_SIZE);
 710                 return -EINVAL;
 711         }
 712         rss_conf->rss_hf = enic->rss_hf;
 713         if (rss_conf->rss_key != NULL) {
 714                 int i;
 715                 for (i = 0; i < ENIC_RSS_HASH_KEY_SIZE; i++) {
 716                         rss_conf->rss_key[i] =
 717                                 enic->rss_key.key[i / 10].b[i % 10];
 718                 }
 719                 rss_conf->rss_key_len = ENIC_RSS_HASH_KEY_SIZE;
 720         }
 721         return 0;
 722 }
 723
 724 static void enicpmd_dev_rxq_info_get(struct rte_eth_dev *dev,
 725                                      uint16_t rx_queue_id,
 726                                      struct rte_eth_rxq_info *qinfo)
 727 {
 728         struct enic *enic = pmd_priv(dev);
 729         struct vnic_rq *rq_sop;
 730         struct vnic_rq *rq_data;
 731         struct rte_eth_rxconf *conf;
 732         uint16_t sop_queue_idx;
 733         uint16_t data_queue_idx;
 734
 735         ENICPMD_FUNC_TRACE();
 736         sop_queue_idx = enic_rte_rq_idx_to_sop_idx(rx_queue_id);
 737         data_queue_idx = enic_rte_rq_idx_to_data_idx(rx_queue_id);
 738         rq_sop = &enic->rq[sop_queue_idx];
 739         rq_data = &enic->rq[data_queue_idx]; /* valid if data_queue_enable */
 740         qinfo->mp = rq_sop->mp;
 741         qinfo->scattered_rx = rq_sop->data_queue_enable;
 742         qinfo->nb_desc = rq_sop->ring.desc_count;
 743         if (qinfo->scattered_rx)
 744                 qinfo->nb_desc += rq_data->ring.desc_count;
 745         conf = &qinfo->conf;
 746         memset(conf, 0, sizeof(*conf));
 747         conf->rx_free_thresh = rq_sop->rx_free_thresh;
 748         conf->rx_drop_en = 1;
 749         /*
 750          * Except VLAN stripping (port setting), all the checksum offloads
 751          * are always enabled.
 752          */
 753         conf->offloads = enic->rx_offload_capa;
 754         if (!enic->ig_vlan_strip_en)
 755                 conf->offloads &= ~DEV_RX_OFFLOAD_VLAN_STRIP;
 756         /* rx_thresh and other fields are not applicable for enic */
 757 }
 758
 759 static void enicpmd_dev_txq_info_get(struct rte_eth_dev *dev,
 760                                      uint16_t tx_queue_id,
 761                                      struct rte_eth_txq_info *qinfo)
 762 {
 763         struct enic *enic = pmd_priv(dev);
 764         struct vnic_wq *wq = &enic->wq[tx_queue_id];
 765
 766         ENICPMD_FUNC_TRACE();
 767         qinfo->nb_desc = wq->ring.desc_count;
 768         memset(&qinfo->conf, 0, sizeof(qinfo->conf));
 769         qinfo->conf.offloads = wq->offloads;
 770         /* tx_thresh, and all the other fields are not applicable for enic */
 771 }
 772
 773 static int enicpmd_dev_rx_queue_intr_enable(struct rte_eth_dev *eth_dev,
 774                                             uint16_t rx_queue_id)
 775 {
 776         struct enic *enic = pmd_priv(eth_dev);
 777
 778         ENICPMD_FUNC_TRACE();
 779         vnic_intr_unmask(&enic->intr[rx_queue_id + ENICPMD_RXQ_INTR_OFFSET]);
 780         return 0;
 781 }
 782
 783 static int enicpmd_dev_rx_queue_intr_disable(struct rte_eth_dev *eth_dev,
 784                                              uint16_t rx_queue_id)
 785 {
 786         struct enic *enic = pmd_priv(eth_dev);
 787
 788         ENICPMD_FUNC_TRACE();
 789         vnic_intr_mask(&enic->intr[rx_queue_id + ENICPMD_RXQ_INTR_OFFSET]);
 790         return 0;
 791 }
 792
 793 static int udp_tunnel_common_check(struct enic *enic,
 794                                    struct rte_eth_udp_tunnel *tnl)
 795 {
 796         if (tnl->prot_type != RTE_TUNNEL_TYPE_VXLAN)
 797                 return -ENOTSUP;
 798         if (!enic->overlay_offload) {
 799                 PMD_INIT_LOG(DEBUG, " vxlan (overlay offload) is not "
 800                              "supported\n");
 801                 return -ENOTSUP;
 802         }
 803         return 0;
 804 }
 805
 806 static int update_vxlan_port(struct enic *enic, uint16_t port)
 807 {
 808         if (vnic_dev_overlay_offload_cfg(enic->vdev,
 809                                          OVERLAY_CFG_VXLAN_PORT_UPDATE,
 810                                          port)) {
 811                 PMD_INIT_LOG(DEBUG, " failed to update vxlan port\n");
 812                 return -EINVAL;
 813         }
 814         PMD_INIT_LOG(DEBUG, " updated vxlan port to %u\n", port);
 815         enic->vxlan_port = port;
 816         return 0;
 817 }
 818
 819 static int enicpmd_dev_udp_tunnel_port_add(struct rte_eth_dev *eth_dev,
 820                                            struct rte_eth_udp_tunnel *tnl)
 821 {
 822         struct enic *enic = pmd_priv(eth_dev);
 823         int ret;
 824
 825         ENICPMD_FUNC_TRACE();
 826         ret = udp_tunnel_common_check(enic, tnl);
 827         if (ret)
 828                 return ret;
 829         /*
 830          * The NIC has 1 configurable VXLAN port number. "Adding" a new port
 831          * number replaces it.
 832          */
 833         if (tnl->udp_port == enic->vxlan_port || tnl->udp_port == 0) {
 834                 PMD_INIT_LOG(DEBUG, " %u is already configured or invalid\n",
 835                              tnl->udp_port);
 836                 return -EINVAL;
 837         }
 838         return update_vxlan_port(enic, tnl->udp_port);
 839 }
 840
 841 static int enicpmd_dev_udp_tunnel_port_del(struct rte_eth_dev *eth_dev,
 842                                            struct rte_eth_udp_tunnel *tnl)
 843 {
 844         struct enic *enic = pmd_priv(eth_dev);
 845         int ret;
 846
 847         ENICPMD_FUNC_TRACE();
 848         ret = udp_tunnel_common_check(enic, tnl);
 849         if (ret)
 850                 return ret;
 851         /*
 852          * Clear the previously set port number and restore the
 853          * hardware default port number. Some drivers disable VXLAN
 854          * offloads when there are no configured port numbers. But
 855          * enic does not do that as VXLAN is part of overlay offload,
 856          * which is tied to inner RSS and TSO.
 857          */
 858         if (tnl->udp_port != enic->vxlan_port) {
 859                 PMD_INIT_LOG(DEBUG, " %u is not a configured vxlan port\n",
 860                              tnl->udp_port);
 861                 return -EINVAL;
 862         }
 863         return update_vxlan_port(enic, ENIC_DEFAULT_VXLAN_PORT);
 864 }
 865
 866 static const struct eth_dev_ops enicpmd_eth_dev_ops = {
 867         .dev_configure        = enicpmd_dev_configure,
 868         .dev_start            = enicpmd_dev_start,
 869         .dev_stop             = enicpmd_dev_stop,
 870         .dev_set_link_up      = NULL,
 871         .dev_set_link_down    = NULL,
 872         .dev_close            = enicpmd_dev_close,
 873         .promiscuous_enable   = enicpmd_dev_promiscuous_enable,
 874         .promiscuous_disable  = enicpmd_dev_promiscuous_disable,
 875         .allmulticast_enable  = enicpmd_dev_allmulticast_enable,
 876         .allmulticast_disable = enicpmd_dev_allmulticast_disable,
 877         .link_update          = enicpmd_dev_link_update,
 878         .stats_get            = enicpmd_dev_stats_get,
 879         .stats_reset          = enicpmd_dev_stats_reset,
 880         .queue_stats_mapping_set = NULL,
 881         .dev_infos_get        = enicpmd_dev_info_get,
 882         .dev_supported_ptypes_get = enicpmd_dev_supported_ptypes_get,
 883         .mtu_set              = enicpmd_mtu_set,
 884         .vlan_filter_set      = NULL,
 885         .vlan_tpid_set        = NULL,
 886         .vlan_offload_set     = enicpmd_vlan_offload_set,
 887         .vlan_strip_queue_set = NULL,
 888         .rx_queue_start       = enicpmd_dev_rx_queue_start,
 889         .rx_queue_stop        = enicpmd_dev_rx_queue_stop,
 890         .tx_queue_start       = enicpmd_dev_tx_queue_start,
 891         .tx_queue_stop        = enicpmd_dev_tx_queue_stop,
 892         .rx_queue_setup       = enicpmd_dev_rx_queue_setup,
 893         .rx_queue_release     = enicpmd_dev_rx_queue_release,
 894         .rx_queue_count       = enicpmd_dev_rx_queue_count,
 895         .rx_descriptor_done   = NULL,
 896         .tx_queue_setup       = enicpmd_dev_tx_queue_setup,
 897         .tx_queue_release     = enicpmd_dev_tx_queue_release,
 898         .rx_queue_intr_enable = enicpmd_dev_rx_queue_intr_enable,
 899         .rx_queue_intr_disable = enicpmd_dev_rx_queue_intr_disable,
 900         .rxq_info_get         = enicpmd_dev_rxq_info_get,
 901         .txq_info_get         = enicpmd_dev_txq_info_get,
 902         .dev_led_on           = NULL,
 903         .dev_led_off          = NULL,
 904         .flow_ctrl_get        = NULL,
 905         .flow_ctrl_set        = NULL,
 906         .priority_flow_ctrl_set = NULL,
 907         .mac_addr_add         = enicpmd_add_mac_addr,
 908         .mac_addr_remove      = enicpmd_remove_mac_addr,
 909         .mac_addr_set         = enicpmd_set_mac_addr,
 910         .filter_ctrl          = enicpmd_dev_filter_ctrl,
 911         .reta_query           = enicpmd_dev_rss_reta_query,
 912         .reta_update          = enicpmd_dev_rss_reta_update,
 913         .rss_hash_conf_get    = enicpmd_dev_rss_hash_conf_get,
 914         .rss_hash_update      = enicpmd_dev_rss_hash_update,
 915         .udp_tunnel_port_add  = enicpmd_dev_udp_tunnel_port_add,
 916         .udp_tunnel_port_del  = enicpmd_dev_udp_tunnel_port_del,
 917 };
 918
 919 static int enic_parse_disable_overlay(__rte_unused const char *key,
 920                                       const char *value,
 921                                       void *opaque)
 922 {
 923         struct enic *enic;
 924
 925         enic = (struct enic *)opaque;
 926         if (strcmp(value, "0") == 0) {
 927                 enic->disable_overlay = false;
 928         } else if (strcmp(value, "1") == 0) {
 929                 enic->disable_overlay = true;
 930         } else {
 931                 dev_err(enic, "Invalid value for " ENIC_DEVARG_DISABLE_OVERLAY
 932                         ": expected=0|1 given=%s\n", value);
 933                 return -EINVAL;
 934         }
 935         return 0;
 936 }
 937
 938 static int enic_parse_ig_vlan_rewrite(__rte_unused const char *key,
 939                                       const char *value,
 940                                       void *opaque)
 941 {
 942         struct enic *enic;
 943
 944         enic = (struct enic *)opaque;
 945         if (strcmp(value, "trunk") == 0) {
 946                 /* Trunk mode: always tag */
 947                 enic->ig_vlan_rewrite_mode = IG_VLAN_REWRITE_MODE_DEFAULT_TRUNK;
 948         } else if (strcmp(value, "untag") == 0) {
 949                 /* Untag default VLAN mode: untag if VLAN = default VLAN */
 950                 enic->ig_vlan_rewrite_mode =
 951                         IG_VLAN_REWRITE_MODE_UNTAG_DEFAULT_VLAN;
 952         } else if (strcmp(value, "priority") == 0) {
 953                 /*
 954                  * Priority-tag default VLAN mode: priority tag (VLAN header
 955                  * with ID=0) if VLAN = default
 956                  */
 957                 enic->ig_vlan_rewrite_mode =
 958                         IG_VLAN_REWRITE_MODE_PRIORITY_TAG_DEFAULT_VLAN;
 959         } else if (strcmp(value, "pass") == 0) {
 960                 /* Pass through mode: do not touch tags */
 961                 enic->ig_vlan_rewrite_mode = IG_VLAN_REWRITE_MODE_PASS_THRU;
 962         } else {
 963                 dev_err(enic, "Invalid value for " ENIC_DEVARG_IG_VLAN_REWRITE
 964                         ": expected=trunk|untag|priority|pass given=%s\n",
 965                         value);
 966                 return -EINVAL;
 967         }
 968         return 0;
 969 }
 970
 971 static int enic_check_devargs(struct rte_eth_dev *dev)
 972 {
 973         static const char *const valid_keys[] = {
 974                 ENIC_DEVARG_DISABLE_OVERLAY,
 975                 ENIC_DEVARG_IG_VLAN_REWRITE,
 976                 NULL};
 977         struct enic *enic = pmd_priv(dev);
 978         struct rte_kvargs *kvlist;
 979
 980         ENICPMD_FUNC_TRACE();
 981
 982         enic->disable_overlay = false;
 983         enic->ig_vlan_rewrite_mode = IG_VLAN_REWRITE_MODE_PASS_THRU;
 984         if (!dev->device->devargs)
 985                 return 0;
 986         kvlist = rte_kvargs_parse(dev->device->devargs->args, valid_keys);
 987         if (!kvlist)
 988                 return -EINVAL;
 989         if (rte_kvargs_process(kvlist, ENIC_DEVARG_DISABLE_OVERLAY,
 990                                enic_parse_disable_overlay, enic) < 0 ||
 991             rte_kvargs_process(kvlist, ENIC_DEVARG_IG_VLAN_REWRITE,
 992                                enic_parse_ig_vlan_rewrite, enic) < 0) {
 993                 rte_kvargs_free(kvlist);
 994                 return -EINVAL;
 995         }
 996         rte_kvargs_free(kvlist);
 997         return 0;
 998 }
 999
1000 struct enic *enicpmd_list_head = NULL;
1001 /* Initialize the driver
1002  * It returns 0 on success.
1003  */
1004 static int eth_enicpmd_dev_init(struct rte_eth_dev *eth_dev)
1005 {
1006         struct rte_pci_device *pdev;
1007         struct rte_pci_addr *addr;
1008         struct enic *enic = pmd_priv(eth_dev);
1009         int err;
1010
1011         ENICPMD_FUNC_TRACE();
1012
1013         enic->port_id = eth_dev->data->port_id;
1014         enic->rte_dev = eth_dev;
1015         eth_dev->dev_ops = &enicpmd_eth_dev_ops;
1016         eth_dev->rx_pkt_burst = &enic_recv_pkts;
1017         eth_dev->tx_pkt_burst = &enic_xmit_pkts;
1018         eth_dev->tx_pkt_prepare = &enic_prep_pkts;
1019
1020         pdev = RTE_ETH_DEV_TO_PCI(eth_dev);
1021         rte_eth_copy_pci_info(eth_dev, pdev);
1022         enic->pdev = pdev;
1023         addr = &pdev->addr;
1024
1025         snprintf(enic->bdf_name, ENICPMD_BDF_LENGTH, "%04x:%02x:%02x.%x",
1026                 addr->domain, addr->bus, addr->devid, addr->function);
1027
1028         err = enic_check_devargs(eth_dev);
1029         if (err)
1030                 return err;
1031         return enic_probe(enic);
1032 }
1033
1034 static int eth_enic_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
1035         struct rte_pci_device *pci_dev)
1036 {
1037         return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct enic),
1038                 eth_enicpmd_dev_init);
1039 }
1040
1041 static int eth_enic_pci_remove(struct rte_pci_device *pci_dev)
1042 {
1043         return rte_eth_dev_pci_generic_remove(pci_dev, NULL);
1044 }
1045
1046 static struct rte_pci_driver rte_enic_pmd = {
1047         .id_table = pci_id_enic_map,
1048         .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC,
1049         .probe = eth_enic_pci_probe,
1050         .remove = eth_enic_pci_remove,
1051 };
1052
1053 RTE_PMD_REGISTER_PCI(net_enic, rte_enic_pmd);
1054 RTE_PMD_REGISTER_PCI_TABLE(net_enic, pci_id_enic_map);
1055 RTE_PMD_REGISTER_KMOD_DEP(net_enic, "* igb_uio | uio_pci_generic | vfio-pci");
1056 RTE_PMD_REGISTER_PARAM_STRING(net_enic,
1057         ENIC_DEVARG_DISABLE_OVERLAY "=0|1 "
1058         ENIC_DEVARG_IG_VLAN_REWRITE "=trunk|untag|priority|pass");