drivers/net/enic/enic_vf_representor.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2008-2019 Cisco Systems, Inc.  All rights reserved.
   3  */
   4
   5 #include <stdint.h>
   6 #include <stdio.h>
   7
   8 #include <rte_bus_pci.h>
   9 #include <rte_common.h>
  10 #include <rte_dev.h>
  11 #include <rte_ethdev_driver.h>
  12 #include <rte_ethdev_pci.h>
  13 #include <rte_flow_driver.h>
  14 #include <rte_kvargs.h>
  15 #include <rte_pci.h>
  16 #include <rte_string_fns.h>
  17
  18 #include "enic_compat.h"
  19 #include "enic.h"
  20 #include "vnic_dev.h"
  21 #include "vnic_enet.h"
  22 #include "vnic_intr.h"
  23 #include "vnic_cq.h"
  24 #include "vnic_wq.h"
  25 #include "vnic_rq.h"
  26
  27 static uint16_t enic_vf_recv_pkts(void *rx_queue,
  28                                   struct rte_mbuf **rx_pkts,
  29                                   uint16_t nb_pkts)
  30 {
  31         return enic_recv_pkts(rx_queue, rx_pkts, nb_pkts);
  32 }
  33
  34 static uint16_t enic_vf_xmit_pkts(void *tx_queue,
  35                                   struct rte_mbuf **tx_pkts,
  36                                   uint16_t nb_pkts)
  37 {
  38         return enic_xmit_pkts(tx_queue, tx_pkts, nb_pkts);
  39 }
  40
  41 static int enic_vf_dev_tx_queue_setup(struct rte_eth_dev *eth_dev,
  42         uint16_t queue_idx,
  43         uint16_t nb_desc,
  44         unsigned int socket_id,
  45         const struct rte_eth_txconf *tx_conf)
  46 {
  47         struct enic_vf_representor *vf;
  48         struct vnic_wq *wq;
  49         struct enic *pf;
  50         int err;
  51
  52         ENICPMD_FUNC_TRACE();
  53         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
  54                 return -E_RTE_SECONDARY;
  55         /* Only one queue now */
  56         if (queue_idx != 0)
  57                 return -EINVAL;
  58         vf = eth_dev->data->dev_private;
  59         pf = vf->pf;
  60         wq = &pf->wq[vf->pf_wq_idx];
  61         wq->offloads = tx_conf->offloads |
  62                 eth_dev->data->dev_conf.txmode.offloads;
  63         eth_dev->data->tx_queues[0] = (void *)wq;
  64         /* Pass vf not pf because of cq index calculation. See enic_alloc_wq */
  65         err = enic_alloc_wq(&vf->enic, queue_idx, socket_id, nb_desc);
  66         if (err) {
  67                 ENICPMD_LOG(ERR, "error in allocating wq\n");
  68                 return err;
  69         }
  70         return 0;
  71 }
  72
  73 static void enic_vf_dev_tx_queue_release(void *txq)
  74 {
  75         ENICPMD_FUNC_TRACE();
  76         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
  77                 return;
  78         enic_free_wq(txq);
  79 }
  80
  81 static int enic_vf_dev_rx_queue_setup(struct rte_eth_dev *eth_dev,
  82         uint16_t queue_idx,
  83         uint16_t nb_desc,
  84         unsigned int socket_id,
  85         const struct rte_eth_rxconf *rx_conf,
  86         struct rte_mempool *mp)
  87 {
  88         struct enic_vf_representor *vf;
  89         struct enic *pf;
  90         int ret;
  91
  92         ENICPMD_FUNC_TRACE();
  93         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
  94                 return -E_RTE_SECONDARY;
  95         /* Only 1 queue now */
  96         if (queue_idx != 0)
  97                 return -EINVAL;
  98         vf = eth_dev->data->dev_private;
  99         pf = vf->pf;
 100         eth_dev->data->rx_queues[queue_idx] =
 101                 (void *)&pf->rq[vf->pf_rq_sop_idx];
 102         ret = enic_alloc_rq(&vf->enic, queue_idx, socket_id, mp, nb_desc,
 103                             rx_conf->rx_free_thresh);
 104         if (ret) {
 105                 ENICPMD_LOG(ERR, "error in allocating rq\n");
 106                 return ret;
 107         }
 108         return 0;
 109 }
 110
 111 static void enic_vf_dev_rx_queue_release(void *rxq)
 112 {
 113         ENICPMD_FUNC_TRACE();
 114         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 115                 return;
 116         enic_free_rq(rxq);
 117 }
 118
 119 static int enic_vf_dev_configure(struct rte_eth_dev *eth_dev __rte_unused)
 120 {
 121         ENICPMD_FUNC_TRACE();
 122         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 123                 return -E_RTE_SECONDARY;
 124         return 0;
 125 }
 126
 127 static int
 128 setup_rep_vf_fwd(struct enic_vf_representor *vf)
 129 {
 130         int ret;
 131
 132         ENICPMD_FUNC_TRACE();
 133         /* Representor -> VF rule
 134          * Egress packets from this representor are on the representor's WQ.
 135          * So, loop back that WQ to VF.
 136          */
 137         ret = enic_fm_add_rep2vf_flow(vf);
 138         if (ret) {
 139                 ENICPMD_LOG(ERR, "Cannot create representor->VF flow");
 140                 return ret;
 141         }
 142         /* VF -> representor rule
 143          * Packets from VF loop back to the representor, unless they match
 144          * user-added flows.
 145          */
 146         ret = enic_fm_add_vf2rep_flow(vf);
 147         if (ret) {
 148                 ENICPMD_LOG(ERR, "Cannot create VF->representor flow");
 149                 return ret;
 150         }
 151         return 0;
 152 }
 153
 154 static int enic_vf_dev_start(struct rte_eth_dev *eth_dev)
 155 {
 156         struct enic_vf_representor *vf;
 157         struct vnic_rq *data_rq;
 158         int index, cq_idx;
 159         struct enic *pf;
 160         int ret;
 161
 162         ENICPMD_FUNC_TRACE();
 163         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 164                 return -E_RTE_SECONDARY;
 165
 166         vf = eth_dev->data->dev_private;
 167         pf = vf->pf;
 168         /* Get representor flowman for flow API and representor path */
 169         ret = enic_fm_init(&vf->enic);
 170         if (ret)
 171                 return ret;
 172         /* Set up implicit flow rules to forward between representor and VF */
 173         ret = setup_rep_vf_fwd(vf);
 174         if (ret) {
 175                 ENICPMD_LOG(ERR, "Cannot set up representor-VF flows");
 176                 return ret;
 177         }
 178         /* Remove all packet filters so no ingress packets go to VF.
 179          * When PF enables switchdev, it will ensure packet filters
 180          * are removed.  So, this is not technically needed.
 181          */
 182         ENICPMD_LOG(DEBUG, "Clear packet filters");
 183         ret = vnic_dev_packet_filter(vf->enic.vdev, 0, 0, 0, 0, 0);
 184         if (ret) {
 185                 ENICPMD_LOG(ERR, "Cannot clear packet filters");
 186                 return ret;
 187         }
 188
 189         /* Start WQ: see enic_init_vnic_resources */
 190         index = vf->pf_wq_idx;
 191         cq_idx = vf->pf_wq_cq_idx;
 192         vnic_wq_init(&pf->wq[index], cq_idx, 1, 0);
 193         vnic_cq_init(&pf->cq[cq_idx],
 194                      0 /* flow_control_enable */,
 195                      1 /* color_enable */,
 196                      0 /* cq_head */,
 197                      0 /* cq_tail */,
 198                      1 /* cq_tail_color */,
 199                      0 /* interrupt_enable */,
 200                      0 /* cq_entry_enable */,
 201                      1 /* cq_message_enable */,
 202                      0 /* interrupt offset */,
 203                      (uint64_t)pf->wq[index].cqmsg_rz->iova);
 204         /* enic_start_wq */
 205         vnic_wq_enable(&pf->wq[index]);
 206         eth_dev->data->tx_queue_state[0] = RTE_ETH_QUEUE_STATE_STARTED;
 207
 208         /* Start RQ: see enic_init_vnic_resources */
 209         index = vf->pf_rq_sop_idx;
 210         cq_idx = enic_cq_rq(vf->pf, index);
 211         vnic_rq_init(&pf->rq[index], cq_idx, 1, 0);
 212         data_rq = &pf->rq[vf->pf_rq_data_idx];
 213         if (data_rq->in_use)
 214                 vnic_rq_init(data_rq, cq_idx, 1, 0);
 215         vnic_cq_init(&pf->cq[cq_idx],
 216                      0 /* flow_control_enable */,
 217                      1 /* color_enable */,
 218                      0 /* cq_head */,
 219                      0 /* cq_tail */,
 220                      1 /* cq_tail_color */,
 221                      0,
 222                      1 /* cq_entry_enable */,
 223                      0 /* cq_message_enable */,
 224                      0,
 225                      0 /* cq_message_addr */);
 226         /* enic_enable */
 227         ret = enic_alloc_rx_queue_mbufs(pf, &pf->rq[index]);
 228         if (ret) {
 229                 ENICPMD_LOG(ERR, "Failed to alloc sop RX queue mbufs\n");
 230                 return ret;
 231         }
 232         ret = enic_alloc_rx_queue_mbufs(pf, data_rq);
 233         if (ret) {
 234                 /* Release the allocated mbufs for the sop rq*/
 235                 enic_rxmbuf_queue_release(pf, &pf->rq[index]);
 236                 ENICPMD_LOG(ERR, "Failed to alloc data RX queue mbufs\n");
 237                 return ret;
 238         }
 239         enic_start_rq(pf, vf->pf_rq_sop_idx);
 240         eth_dev->data->tx_queue_state[0] = RTE_ETH_QUEUE_STATE_STARTED;
 241         eth_dev->data->rx_queue_state[0] = RTE_ETH_QUEUE_STATE_STARTED;
 242         return 0;
 243 }
 244
 245 static void enic_vf_dev_stop(struct rte_eth_dev *eth_dev)
 246 {
 247         struct enic_vf_representor *vf;
 248         struct vnic_rq *rq;
 249         struct enic *pf;
 250
 251         ENICPMD_FUNC_TRACE();
 252         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 253                 return;
 254         /* Undo dev_start. Disable/clean WQ */
 255         vf = eth_dev->data->dev_private;
 256         pf = vf->pf;
 257         vnic_wq_disable(&pf->wq[vf->pf_wq_idx]);
 258         vnic_wq_clean(&pf->wq[vf->pf_wq_idx], enic_free_wq_buf);
 259         vnic_cq_clean(&pf->cq[vf->pf_wq_cq_idx]);
 260         /* Disable/clean RQ */
 261         rq = &pf->rq[vf->pf_rq_sop_idx];
 262         vnic_rq_disable(rq);
 263         vnic_rq_clean(rq, enic_free_rq_buf);
 264         rq = &pf->rq[vf->pf_rq_data_idx];
 265         if (rq->in_use) {
 266                 vnic_rq_disable(rq);
 267                 vnic_rq_clean(rq, enic_free_rq_buf);
 268         }
 269         vnic_cq_clean(&pf->cq[enic_cq_rq(vf->pf, vf->pf_rq_sop_idx)]);
 270         eth_dev->data->tx_queue_state[0] = RTE_ETH_QUEUE_STATE_STOPPED;
 271         eth_dev->data->rx_queue_state[0] = RTE_ETH_QUEUE_STATE_STOPPED;
 272         /* Clean up representor flowman */
 273         enic_fm_destroy(&vf->enic);
 274 }
 275
 276 /*
 277  * "close" is no-op for now and solely exists so that rte_eth_dev_close()
 278  * can finish its own cleanup without errors.
 279  */
 280 static int enic_vf_dev_close(struct rte_eth_dev *eth_dev __rte_unused)
 281 {
 282         ENICPMD_FUNC_TRACE();
 283         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 284                 return 0;
 285         return 0;
 286 }
 287
 288 static int
 289 adjust_flow_attr(const struct rte_flow_attr *attrs,
 290                  struct rte_flow_attr *vf_attrs,
 291                  struct rte_flow_error *error)
 292 {
 293         if (!attrs) {
 294                 return rte_flow_error_set(error, EINVAL,
 295                                 RTE_FLOW_ERROR_TYPE_ATTR,
 296                                 NULL, "no attribute specified");
 297         }
 298         /*
 299          * Swap ingress and egress as the firmware view of direction
 300          * is the opposite of the representor.
 301          */
 302         *vf_attrs = *attrs;
 303         if (attrs->ingress && !attrs->egress) {
 304                 vf_attrs->ingress = 0;
 305                 vf_attrs->egress = 1;
 306                 return 0;
 307         }
 308         return rte_flow_error_set(error, ENOTSUP,
 309                         RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 310                         "representor only supports ingress");
 311 }
 312
 313 static int
 314 enic_vf_flow_validate(struct rte_eth_dev *dev,
 315                       const struct rte_flow_attr *attrs,
 316                       const struct rte_flow_item pattern[],
 317                       const struct rte_flow_action actions[],
 318                       struct rte_flow_error *error)
 319 {
 320         struct rte_flow_attr vf_attrs;
 321         int ret;
 322
 323         ret = adjust_flow_attr(attrs, &vf_attrs, error);
 324         if (ret)
 325                 return ret;
 326         attrs = &vf_attrs;
 327         return enic_fm_flow_ops.validate(dev, attrs, pattern, actions, error);
 328 }
 329
 330 static struct rte_flow *
 331 enic_vf_flow_create(struct rte_eth_dev *dev,
 332                     const struct rte_flow_attr *attrs,
 333                     const struct rte_flow_item pattern[],
 334                     const struct rte_flow_action actions[],
 335                     struct rte_flow_error *error)
 336 {
 337         struct rte_flow_attr vf_attrs;
 338
 339         if (adjust_flow_attr(attrs, &vf_attrs, error))
 340                 return NULL;
 341         attrs = &vf_attrs;
 342         return enic_fm_flow_ops.create(dev, attrs, pattern, actions, error);
 343 }
 344
 345 static int
 346 enic_vf_flow_destroy(struct rte_eth_dev *dev, struct rte_flow *flow,
 347                      struct rte_flow_error *error)
 348 {
 349         return enic_fm_flow_ops.destroy(dev, flow, error);
 350 }
 351
 352 static int
 353 enic_vf_flow_query(struct rte_eth_dev *dev,
 354                    struct rte_flow *flow,
 355                    const struct rte_flow_action *actions,
 356                    void *data,
 357                    struct rte_flow_error *error)
 358 {
 359         return enic_fm_flow_ops.query(dev, flow, actions, data, error);
 360 }
 361
 362 static int
 363 enic_vf_flow_flush(struct rte_eth_dev *dev,
 364                    struct rte_flow_error *error)
 365 {
 366         return enic_fm_flow_ops.flush(dev, error);
 367 }
 368
 369 static const struct rte_flow_ops enic_vf_flow_ops = {
 370         .validate = enic_vf_flow_validate,
 371         .create = enic_vf_flow_create,
 372         .destroy = enic_vf_flow_destroy,
 373         .flush = enic_vf_flow_flush,
 374         .query = enic_vf_flow_query,
 375 };
 376
 377 static int
 378 enic_vf_filter_ctrl(struct rte_eth_dev *eth_dev,
 379                     enum rte_filter_type filter_type,
 380                     enum rte_filter_op filter_op,
 381                     void *arg)
 382 {
 383         struct enic_vf_representor *vf;
 384         int ret = 0;
 385
 386         ENICPMD_FUNC_TRACE();
 387         vf = eth_dev->data->dev_private;
 388         switch (filter_type) {
 389         case RTE_ETH_FILTER_GENERIC:
 390                 if (filter_op != RTE_ETH_FILTER_GET)
 391                         return -EINVAL;
 392                 if (vf->enic.flow_filter_mode == FILTER_FLOWMAN) {
 393                         *(const void **)arg = &enic_vf_flow_ops;
 394                 } else {
 395                         ENICPMD_LOG(WARNING, "VF representors require flowman support for rte_flow API");
 396                         ret = -EINVAL;
 397                 }
 398                 break;
 399         default:
 400                 ENICPMD_LOG(WARNING, "Filter type (%d) not supported",
 401                             filter_type);
 402                 ret = -EINVAL;
 403                 break;
 404         }
 405         return ret;
 406 }
 407
 408 static int enic_vf_link_update(struct rte_eth_dev *eth_dev,
 409         int wait_to_complete __rte_unused)
 410 {
 411         struct enic_vf_representor *vf;
 412         struct rte_eth_link link;
 413         struct enic *pf;
 414
 415         ENICPMD_FUNC_TRACE();
 416         vf = eth_dev->data->dev_private;
 417         pf = vf->pf;
 418         /*
 419          * Link status and speed are same as PF. Update PF status and then
 420          * copy it to VF.
 421          */
 422         enic_link_update(pf->rte_dev);
 423         rte_eth_linkstatus_get(pf->rte_dev, &link);
 424         rte_eth_linkstatus_set(eth_dev, &link);
 425         return 0;
 426 }
 427
 428 static int enic_vf_stats_get(struct rte_eth_dev *eth_dev,
 429         struct rte_eth_stats *stats)
 430 {
 431         struct enic_vf_representor *vf;
 432         struct vnic_stats *vs;
 433         int err;
 434
 435         ENICPMD_FUNC_TRACE();
 436         vf = eth_dev->data->dev_private;
 437         /* Get VF stats via PF */
 438         err = vnic_dev_stats_dump(vf->enic.vdev, &vs);
 439         if (err) {
 440                 ENICPMD_LOG(ERR, "error in getting stats\n");
 441                 return err;
 442         }
 443         stats->ipackets = vs->rx.rx_frames_ok;
 444         stats->opackets = vs->tx.tx_frames_ok;
 445         stats->ibytes = vs->rx.rx_bytes_ok;
 446         stats->obytes = vs->tx.tx_bytes_ok;
 447         stats->ierrors = vs->rx.rx_errors + vs->rx.rx_drop;
 448         stats->oerrors = vs->tx.tx_errors;
 449         stats->imissed = vs->rx.rx_no_bufs;
 450         return 0;
 451 }
 452
 453 static int enic_vf_stats_reset(struct rte_eth_dev *eth_dev)
 454 {
 455         struct enic_vf_representor *vf;
 456         int err;
 457
 458         ENICPMD_FUNC_TRACE();
 459         vf = eth_dev->data->dev_private;
 460         /* Ask PF to clear VF stats */
 461         err = vnic_dev_stats_clear(vf->enic.vdev);
 462         if (err)
 463                 ENICPMD_LOG(ERR, "error in clearing stats\n");
 464         return err;
 465 }
 466
 467 static int enic_vf_dev_infos_get(struct rte_eth_dev *eth_dev,
 468         struct rte_eth_dev_info *device_info)
 469 {
 470         struct enic_vf_representor *vf;
 471         struct enic *pf;
 472
 473         ENICPMD_FUNC_TRACE();
 474         vf = eth_dev->data->dev_private;
 475         pf = vf->pf;
 476         device_info->max_rx_queues = eth_dev->data->nb_rx_queues;
 477         device_info->max_tx_queues = eth_dev->data->nb_tx_queues;
 478         device_info->min_rx_bufsize = ENIC_MIN_MTU;
 479         /* Max packet size is same as PF */
 480         device_info->max_rx_pktlen = enic_mtu_to_max_rx_pktlen(pf->max_mtu);
 481         device_info->max_mac_addrs = ENIC_UNICAST_PERFECT_FILTERS;
 482         /* No offload capa, RSS, etc. until Tx/Rx handlers are added */
 483         device_info->rx_offload_capa = 0;
 484         device_info->tx_offload_capa = 0;
 485         device_info->switch_info.name = pf->rte_dev->device->name;
 486         device_info->switch_info.domain_id = vf->switch_domain_id;
 487         device_info->switch_info.port_id = vf->vf_id;
 488         return 0;
 489 }
 490
 491 static void set_vf_packet_filter(struct enic_vf_representor *vf)
 492 {
 493         /* switchdev: packet filters are ignored */
 494         if (vf->enic.switchdev_mode)
 495                 return;
 496         /* Ask PF to apply filters on VF */
 497         vnic_dev_packet_filter(vf->enic.vdev, 1 /* unicast */, 1 /* mcast */,
 498                 1 /* bcast */, vf->promisc, vf->allmulti);
 499 }
 500
 501 static int enic_vf_promiscuous_enable(struct rte_eth_dev *eth_dev)
 502 {
 503         struct enic_vf_representor *vf;
 504
 505         ENICPMD_FUNC_TRACE();
 506         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 507                 return -E_RTE_SECONDARY;
 508         vf = eth_dev->data->dev_private;
 509         vf->promisc = 1;
 510         set_vf_packet_filter(vf);
 511         return 0;
 512 }
 513
 514 static int enic_vf_promiscuous_disable(struct rte_eth_dev *eth_dev)
 515 {
 516         struct enic_vf_representor *vf;
 517
 518         ENICPMD_FUNC_TRACE();
 519         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 520                 return -E_RTE_SECONDARY;
 521         vf = eth_dev->data->dev_private;
 522         vf->promisc = 0;
 523         set_vf_packet_filter(vf);
 524         return 0;
 525 }
 526
 527 static int enic_vf_allmulticast_enable(struct rte_eth_dev *eth_dev)
 528 {
 529         struct enic_vf_representor *vf;
 530
 531         ENICPMD_FUNC_TRACE();
 532         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 533                 return -E_RTE_SECONDARY;
 534         vf = eth_dev->data->dev_private;
 535         vf->allmulti = 1;
 536         set_vf_packet_filter(vf);
 537         return 0;
 538 }
 539
 540 static int enic_vf_allmulticast_disable(struct rte_eth_dev *eth_dev)
 541 {
 542         struct enic_vf_representor *vf;
 543
 544         ENICPMD_FUNC_TRACE();
 545         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
 546                 return -E_RTE_SECONDARY;
 547         vf = eth_dev->data->dev_private;
 548         vf->allmulti = 0;
 549         set_vf_packet_filter(vf);
 550         return 0;
 551 }
 552
 553 /*
 554  * A minimal set of handlers.
 555  * The representor can get/set a small set of VF settings via "proxy" devcmd.
 556  * With proxy devcmd, the PF driver basically tells the VIC firmware to
 557  * "perform this devcmd on that VF".
 558  */
 559 static const struct eth_dev_ops enic_vf_representor_dev_ops = {
 560         .allmulticast_enable  = enic_vf_allmulticast_enable,
 561         .allmulticast_disable = enic_vf_allmulticast_disable,
 562         .dev_configure        = enic_vf_dev_configure,
 563         .dev_infos_get        = enic_vf_dev_infos_get,
 564         .dev_start            = enic_vf_dev_start,
 565         .dev_stop             = enic_vf_dev_stop,
 566         .dev_close            = enic_vf_dev_close,
 567         .filter_ctrl          = enic_vf_filter_ctrl,
 568         .link_update          = enic_vf_link_update,
 569         .promiscuous_enable   = enic_vf_promiscuous_enable,
 570         .promiscuous_disable  = enic_vf_promiscuous_disable,
 571         .stats_get            = enic_vf_stats_get,
 572         .stats_reset          = enic_vf_stats_reset,
 573         .rx_queue_setup       = enic_vf_dev_rx_queue_setup,
 574         .rx_queue_release     = enic_vf_dev_rx_queue_release,
 575         .tx_queue_setup       = enic_vf_dev_tx_queue_setup,
 576         .tx_queue_release     = enic_vf_dev_tx_queue_release,
 577 };
 578
 579 static int get_vf_config(struct enic_vf_representor *vf)
 580 {
 581         struct vnic_enet_config *c;
 582         struct enic *pf;
 583         int switch_mtu;
 584         int err;
 585
 586         c = &vf->config;
 587         pf = vf->pf;
 588         /* VF MAC */
 589         err = vnic_dev_get_mac_addr(vf->enic.vdev, vf->mac_addr.addr_bytes);
 590         if (err) {
 591                 ENICPMD_LOG(ERR, "error in getting MAC address\n");
 592                 return err;
 593         }
 594         rte_ether_addr_copy(&vf->mac_addr, vf->eth_dev->data->mac_addrs);
 595
 596         /* VF MTU per its vNIC setting */
 597         err = vnic_dev_spec(vf->enic.vdev,
 598                             offsetof(struct vnic_enet_config, mtu),
 599                             sizeof(c->mtu), &c->mtu);
 600         if (err) {
 601                 ENICPMD_LOG(ERR, "error in getting MTU\n");
 602                 return err;
 603         }
 604         /*
 605          * Blade switch (fabric interconnect) port's MTU. Assume the kernel
 606          * enic driver runs on VF. That driver automatically adjusts its MTU
 607          * according to the switch MTU.
 608          */
 609         switch_mtu = vnic_dev_mtu(pf->vdev);
 610         vf->eth_dev->data->mtu = c->mtu;
 611         if (switch_mtu > c->mtu)
 612                 vf->eth_dev->data->mtu = RTE_MIN(ENIC_MAX_MTU, switch_mtu);
 613         return 0;
 614 }
 615
 616 int enic_vf_representor_init(struct rte_eth_dev *eth_dev, void *init_params)
 617 {
 618         struct enic_vf_representor *vf, *params;
 619         struct rte_pci_device *pdev;
 620         struct enic *pf, *vf_enic;
 621         struct rte_pci_addr *addr;
 622         int ret;
 623
 624         ENICPMD_FUNC_TRACE();
 625         params = init_params;
 626         vf = eth_dev->data->dev_private;
 627         vf->switch_domain_id = params->switch_domain_id;
 628         vf->vf_id = params->vf_id;
 629         vf->eth_dev = eth_dev;
 630         vf->pf = params->pf;
 631         vf->allmulti = 1;
 632         vf->promisc = 0;
 633         pf = vf->pf;
 634         vf->enic.switchdev_mode = pf->switchdev_mode;
 635         /* Only switchdev is supported now */
 636         RTE_ASSERT(vf->enic.switchdev_mode);
 637         /* Allocate WQ, RQ, CQ for the representor */
 638         vf->pf_wq_idx = vf_wq_idx(vf);
 639         vf->pf_wq_cq_idx = vf_wq_cq_idx(vf);
 640         vf->pf_rq_sop_idx = vf_rq_sop_idx(vf);
 641         vf->pf_rq_data_idx = vf_rq_data_idx(vf);
 642         /* Remove these assertions once queue allocation has an easy-to-use
 643          * allocator API instead of index number calculations used throughout
 644          * the driver..
 645          */
 646         RTE_ASSERT(enic_cq_rq(pf, vf->pf_rq_sop_idx) == vf->pf_rq_sop_idx);
 647         RTE_ASSERT(enic_rte_rq_idx_to_sop_idx(vf->pf_rq_sop_idx) ==
 648                    vf->pf_rq_sop_idx);
 649         /* RX handlers use enic_cq_rq(sop) to get CQ, so do not save it */
 650         pf->vf_required_wq++;
 651         pf->vf_required_rq += 2; /* sop and data */
 652         pf->vf_required_cq += 2; /* 1 for rq sop and 1 for wq */
 653         ENICPMD_LOG(DEBUG, "vf_id %u wq %u rq_sop %u rq_data %u wq_cq %u rq_cq %u",
 654                 vf->vf_id, vf->pf_wq_idx, vf->pf_rq_sop_idx, vf->pf_rq_data_idx,
 655                 vf->pf_wq_cq_idx, enic_cq_rq(pf, vf->pf_rq_sop_idx));
 656         if (enic_cq_rq(pf, vf->pf_rq_sop_idx) >= pf->conf_cq_count) {
 657                 ENICPMD_LOG(ERR, "Insufficient CQs. Please ensure number of CQs (%u)"
 658                             " >= number of RQs (%u) in CIMC or UCSM",
 659                             pf->conf_cq_count, pf->conf_rq_count);
 660                 return -EINVAL;
 661         }
 662
 663         /* Check for non-existent VFs */
 664         pdev = RTE_ETH_DEV_TO_PCI(pf->rte_dev);
 665         if (vf->vf_id >= pdev->max_vfs) {
 666                 ENICPMD_LOG(ERR, "VF ID is invalid. vf_id %u max_vfs %u",
 667                             vf->vf_id, pdev->max_vfs);
 668                 return -ENODEV;
 669         }
 670
 671         eth_dev->device->driver = pf->rte_dev->device->driver;
 672         eth_dev->dev_ops = &enic_vf_representor_dev_ops;
 673         eth_dev->data->dev_flags |= RTE_ETH_DEV_REPRESENTOR;
 674         eth_dev->data->representor_id = vf->vf_id;
 675         eth_dev->data->mac_addrs = rte_zmalloc("enic_mac_addr_vf",
 676                 sizeof(struct rte_ether_addr) *
 677                 ENIC_UNICAST_PERFECT_FILTERS, 0);
 678         if (eth_dev->data->mac_addrs == NULL)
 679                 return -ENOMEM;
 680         /* Use 1 RX queue and 1 TX queue for representor path */
 681         eth_dev->data->nb_rx_queues = 1;
 682         eth_dev->data->nb_tx_queues = 1;
 683         eth_dev->rx_pkt_burst = &enic_vf_recv_pkts;
 684         eth_dev->tx_pkt_burst = &enic_vf_xmit_pkts;
 685         /* Initial link state copied from PF */
 686         eth_dev->data->dev_link = pf->rte_dev->data->dev_link;
 687         /* Representor vdev to perform devcmd */
 688         vf->enic.vdev = vnic_vf_rep_register(&vf->enic, pf->vdev, vf->vf_id);
 689         if (vf->enic.vdev == NULL)
 690                 return -ENOMEM;
 691         ret = vnic_dev_alloc_stats_mem(vf->enic.vdev);
 692         if (ret)
 693                 return ret;
 694         /* Get/copy VF vNIC MAC, MTU, etc. into eth_dev */
 695         ret = get_vf_config(vf);
 696         if (ret)
 697                 return ret;
 698
 699         /*
 700          * Calculate VF BDF. The firmware ensures that PF BDF is always
 701          * bus:dev.0, and VF BDFs are dev.1, dev.2, and so on.
 702          */
 703         vf->bdf = pdev->addr;
 704         vf->bdf.function += vf->vf_id + 1;
 705
 706         /* Copy a few fields used by enic_fm_flow */
 707         vf_enic = &vf->enic;
 708         vf_enic->switch_domain_id = vf->switch_domain_id;
 709         vf_enic->flow_filter_mode = pf->flow_filter_mode;
 710         vf_enic->rte_dev = eth_dev;
 711         vf_enic->dev_data = eth_dev->data;
 712         LIST_INIT(&vf_enic->flows);
 713         LIST_INIT(&vf_enic->memzone_list);
 714         rte_spinlock_init(&vf_enic->memzone_list_lock);
 715         addr = &vf->bdf;
 716         snprintf(vf_enic->bdf_name, ENICPMD_BDF_LENGTH, "%04x:%02x:%02x.%x",
 717                  addr->domain, addr->bus, addr->devid, addr->function);
 718         return 0;
 719 }
 720
 721 int enic_vf_representor_uninit(struct rte_eth_dev *eth_dev)
 722 {
 723         struct enic_vf_representor *vf;
 724
 725         ENICPMD_FUNC_TRACE();
 726         vf = eth_dev->data->dev_private;
 727         vnic_dev_unregister(vf->enic.vdev);
 728         return 0;
 729 }