drivers/net/bnxt/bnxt_rxq.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2014-2021 Broadcom
   3  * All rights reserved.
   4  */
   5
   6 #include <inttypes.h>
   7
   8 #include <rte_malloc.h>
   9
  10 #include "bnxt.h"
  11 #include "bnxt_filter.h"
  12 #include "bnxt_hwrm.h"
  13 #include "bnxt_ring.h"
  14 #include "bnxt_rxq.h"
  15 #include "bnxt_rxr.h"
  16 #include "bnxt_vnic.h"
  17 #include "hsi_struct_def_dpdk.h"
  18
  19 /*
  20  * RX Queues
  21  */
  22
  23 void bnxt_free_rxq_stats(struct bnxt_rx_queue *rxq)
  24 {
  25         if (rxq && rxq->cp_ring && rxq->cp_ring->hw_stats)
  26                 rxq->cp_ring->hw_stats = NULL;
  27 }
  28
  29 int bnxt_mq_rx_configure(struct bnxt *bp)
  30 {
  31         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
  32         const struct rte_eth_vmdq_rx_conf *conf =
  33                     &dev_conf->rx_adv_conf.vmdq_rx_conf;
  34         unsigned int i, j, nb_q_per_grp = 1, ring_idx = 0;
  35         int start_grp_id, end_grp_id = 1, rc = 0;
  36         struct bnxt_vnic_info *vnic;
  37         struct bnxt_filter_info *filter;
  38         enum rte_eth_nb_pools pools = 1, max_pools = 0;
  39         struct bnxt_rx_queue *rxq;
  40
  41         bp->nr_vnics = 0;
  42
  43         /* Single queue mode */
  44         if (bp->rx_cp_nr_rings < 2) {
  45                 vnic = &bp->vnic_info[0];
  46                 if (!vnic) {
  47                         PMD_DRV_LOG(ERR, "VNIC alloc failed\n");
  48                         rc = -ENOMEM;
  49                         goto err_out;
  50                 }
  51                 vnic->flags |= BNXT_VNIC_INFO_BCAST;
  52                 bp->nr_vnics++;
  53
  54                 rxq = bp->eth_dev->data->rx_queues[0];
  55                 rxq->vnic = vnic;
  56
  57                 vnic->func_default = true;
  58                 vnic->start_grp_id = 0;
  59                 vnic->end_grp_id = vnic->start_grp_id;
  60                 filter = bnxt_alloc_filter(bp);
  61                 if (!filter) {
  62                         PMD_DRV_LOG(ERR, "L2 filter alloc failed\n");
  63                         rc = -ENOMEM;
  64                         goto err_out;
  65                 }
  66                 filter->mac_index = 0;
  67                 filter->flags |= HWRM_CFA_L2_FILTER_ALLOC_INPUT_FLAGS_OUTERMOST;
  68                 STAILQ_INSERT_TAIL(&vnic->filter, filter, next);
  69                 goto out;
  70         }
  71
  72         /* Multi-queue mode */
  73         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_VMDQ_DCB_RSS) {
  74                 /* VMDq ONLY, VMDq+RSS, VMDq+DCB, VMDq+DCB+RSS */
  75
  76                 switch (dev_conf->rxmode.mq_mode) {
  77                 case ETH_MQ_RX_VMDQ_RSS:
  78                 case ETH_MQ_RX_VMDQ_ONLY:
  79                 case ETH_MQ_RX_VMDQ_DCB_RSS:
  80                         /* FALLTHROUGH */
  81                         /* ETH_8/64_POOLs */
  82                         pools = conf->nb_queue_pools;
  83                         /* For each pool, allocate MACVLAN CFA rule & VNIC */
  84                         max_pools = RTE_MIN(bp->max_vnics,
  85                                             RTE_MIN(bp->max_l2_ctx,
  86                                             RTE_MIN(bp->max_rsscos_ctx,
  87                                                     ETH_64_POOLS)));
  88                         PMD_DRV_LOG(DEBUG,
  89                                     "pools = %u max_pools = %u\n",
  90                                     pools, max_pools);
  91                         if (pools > max_pools)
  92                                 pools = max_pools;
  93                         break;
  94                 case ETH_MQ_RX_RSS:
  95                         pools = bp->rx_cosq_cnt ? bp->rx_cosq_cnt : 1;
  96                         break;
  97                 default:
  98                         PMD_DRV_LOG(ERR, "Unsupported mq_mod %d\n",
  99                                 dev_conf->rxmode.mq_mode);
 100                         rc = -EINVAL;
 101                         goto err_out;
 102                 }
 103         } else if (!dev_conf->rxmode.mq_mode) {
 104                 pools = bp->rx_cosq_cnt ? bp->rx_cosq_cnt : pools;
 105         }
 106
 107         pools = RTE_MIN(pools, bp->rx_cp_nr_rings);
 108         nb_q_per_grp = bp->rx_cp_nr_rings / pools;
 109         PMD_DRV_LOG(DEBUG, "pools = %u nb_q_per_grp = %u\n",
 110                     pools, nb_q_per_grp);
 111         start_grp_id = 0;
 112         end_grp_id = nb_q_per_grp;
 113
 114         for (i = 0; i < pools; i++) {
 115                 vnic = &bp->vnic_info[i];
 116                 if (!vnic) {
 117                         PMD_DRV_LOG(ERR, "VNIC alloc failed\n");
 118                         rc = -ENOMEM;
 119                         goto err_out;
 120                 }
 121                 vnic->flags |= BNXT_VNIC_INFO_BCAST;
 122                 bp->nr_vnics++;
 123
 124                 for (j = 0; j < nb_q_per_grp; j++, ring_idx++) {
 125                         rxq = bp->eth_dev->data->rx_queues[ring_idx];
 126                         rxq->vnic = vnic;
 127                         PMD_DRV_LOG(DEBUG,
 128                                     "rxq[%d] = %p vnic[%d] = %p\n",
 129                                     ring_idx, rxq, i, vnic);
 130                 }
 131                 if (i == 0) {
 132                         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_VMDQ_DCB) {
 133                                 bp->eth_dev->data->promiscuous = 1;
 134                                 vnic->flags |= BNXT_VNIC_INFO_PROMISC;
 135                         }
 136                         vnic->func_default = true;
 137                 }
 138                 vnic->start_grp_id = start_grp_id;
 139                 vnic->end_grp_id = end_grp_id;
 140
 141                 if (i) {
 142                         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_VMDQ_DCB ||
 143                             !(dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS))
 144                                 vnic->rss_dflt_cr = true;
 145                         goto skip_filter_allocation;
 146                 }
 147                 filter = bnxt_alloc_filter(bp);
 148                 if (!filter) {
 149                         PMD_DRV_LOG(ERR, "L2 filter alloc failed\n");
 150                         rc = -ENOMEM;
 151                         goto err_out;
 152                 }
 153                 filter->mac_index = 0;
 154                 filter->flags |= HWRM_CFA_L2_FILTER_ALLOC_INPUT_FLAGS_OUTERMOST;
 155                 /*
 156                  * TODO: Configure & associate CFA rule for
 157                  * each VNIC for each VMDq with MACVLAN, MACVLAN+TC
 158                  */
 159                 STAILQ_INSERT_TAIL(&vnic->filter, filter, next);
 160
 161 skip_filter_allocation:
 162                 start_grp_id = end_grp_id;
 163                 end_grp_id += nb_q_per_grp;
 164         }
 165
 166 out:
 167         bp->rx_num_qs_per_vnic = nb_q_per_grp;
 168
 169         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 170                 struct rte_eth_rss_conf *rss = &dev_conf->rx_adv_conf.rss_conf;
 171
 172                 if (bp->flags & BNXT_FLAG_UPDATE_HASH)
 173                         bp->flags &= ~BNXT_FLAG_UPDATE_HASH;
 174
 175                 for (i = 0; i < bp->nr_vnics; i++) {
 176                         uint32_t lvl = ETH_RSS_LEVEL(rss->rss_hf);
 177
 178                         vnic = &bp->vnic_info[i];
 179                         vnic->hash_type =
 180                                 bnxt_rte_to_hwrm_hash_types(rss->rss_hf);
 181                         vnic->hash_mode =
 182                                 bnxt_rte_to_hwrm_hash_level(bp,
 183                                                             rss->rss_hf,
 184                                                             lvl);
 185
 186                         /*
 187                          * Use the supplied key if the key length is
 188                          * acceptable and the rss_key is not NULL
 189                          */
 190                         if (rss->rss_key &&
 191                             rss->rss_key_len <= HW_HASH_KEY_SIZE)
 192                                 memcpy(vnic->rss_hash_key,
 193                                        rss->rss_key, rss->rss_key_len);
 194                 }
 195         }
 196
 197         return rc;
 198
 199 err_out:
 200         /* Free allocated vnic/filters */
 201
 202         return rc;
 203 }
 204
 205 void bnxt_rx_queue_release_mbufs(struct bnxt_rx_queue *rxq)
 206 {
 207         struct rte_mbuf **sw_ring;
 208         struct bnxt_tpa_info *tpa_info;
 209         uint16_t i;
 210
 211         if (!rxq || !rxq->rx_ring)
 212                 return;
 213
 214         sw_ring = rxq->rx_ring->rx_buf_ring;
 215         if (sw_ring) {
 216 #if defined(RTE_ARCH_X86) || defined(RTE_ARCH_ARM64)
 217                 /*
 218                  * The vector receive burst function does not set used
 219                  * mbuf pointers to NULL, do that here to simplify
 220                  * cleanup logic.
 221                  */
 222                 for (i = 0; i < rxq->rxrearm_nb; i++)
 223                         sw_ring[rxq->rxrearm_start + i] = NULL;
 224                 rxq->rxrearm_nb = 0;
 225 #endif
 226                 for (i = 0;
 227                      i < rxq->rx_ring->rx_ring_struct->ring_size; i++) {
 228                         if (sw_ring[i]) {
 229                                 if (sw_ring[i] != &rxq->fake_mbuf)
 230                                         rte_pktmbuf_free_seg(sw_ring[i]);
 231                                 sw_ring[i] = NULL;
 232                         }
 233                 }
 234         }
 235         /* Free up mbufs in Agg ring */
 236         sw_ring = rxq->rx_ring->ag_buf_ring;
 237         if (sw_ring) {
 238                 for (i = 0;
 239                      i < rxq->rx_ring->ag_ring_struct->ring_size; i++) {
 240                         if (sw_ring[i]) {
 241                                 rte_pktmbuf_free_seg(sw_ring[i]);
 242                                 sw_ring[i] = NULL;
 243                         }
 244                 }
 245         }
 246
 247         /* Free up mbufs in TPA */
 248         tpa_info = rxq->rx_ring->tpa_info;
 249         if (tpa_info) {
 250                 int max_aggs = BNXT_TPA_MAX_AGGS(rxq->bp);
 251
 252                 for (i = 0; i < max_aggs; i++) {
 253                         if (tpa_info[i].mbuf) {
 254                                 rte_pktmbuf_free_seg(tpa_info[i].mbuf);
 255                                 tpa_info[i].mbuf = NULL;
 256                         }
 257                 }
 258         }
 259
 260 }
 261
 262 void bnxt_free_rx_mbufs(struct bnxt *bp)
 263 {
 264         struct bnxt_rx_queue *rxq;
 265         int i;
 266
 267         for (i = 0; i < (int)bp->rx_nr_rings; i++) {
 268                 rxq = bp->rx_queues[i];
 269                 bnxt_rx_queue_release_mbufs(rxq);
 270         }
 271 }
 272
 273 void bnxt_rx_queue_release_op(void *rx_queue)
 274 {
 275         struct bnxt_rx_queue *rxq = (struct bnxt_rx_queue *)rx_queue;
 276
 277         if (rxq) {
 278                 if (is_bnxt_in_error(rxq->bp))
 279                         return;
 280
 281                 bnxt_rx_queue_release_mbufs(rxq);
 282
 283                 /* Free RX ring hardware descriptors */
 284                 if (rxq->rx_ring) {
 285                         bnxt_free_ring(rxq->rx_ring->rx_ring_struct);
 286                         rte_free(rxq->rx_ring->rx_ring_struct);
 287                         /* Free RX Agg ring hardware descriptors */
 288                         bnxt_free_ring(rxq->rx_ring->ag_ring_struct);
 289                         rte_free(rxq->rx_ring->ag_ring_struct);
 290
 291                         rte_free(rxq->rx_ring);
 292                 }
 293                 /* Free RX completion ring hardware descriptors */
 294                 if (rxq->cp_ring) {
 295                         bnxt_free_ring(rxq->cp_ring->cp_ring_struct);
 296                         rte_free(rxq->cp_ring->cp_ring_struct);
 297                         rte_free(rxq->cp_ring);
 298                 }
 299
 300                 bnxt_free_rxq_stats(rxq);
 301                 rte_memzone_free(rxq->mz);
 302                 rxq->mz = NULL;
 303
 304                 rte_free(rxq);
 305         }
 306 }
 307
 308 int bnxt_rx_queue_setup_op(struct rte_eth_dev *eth_dev,
 309                                uint16_t queue_idx,
 310                                uint16_t nb_desc,
 311                                unsigned int socket_id,
 312                                const struct rte_eth_rxconf *rx_conf,
 313                                struct rte_mempool *mp)
 314 {
 315         struct bnxt *bp = eth_dev->data->dev_private;
 316         uint64_t rx_offloads = eth_dev->data->dev_conf.rxmode.offloads;
 317         struct bnxt_rx_queue *rxq;
 318         int rc = 0;
 319         uint8_t queue_state;
 320
 321         rc = is_bnxt_in_error(bp);
 322         if (rc)
 323                 return rc;
 324
 325         if (queue_idx >= bnxt_max_rings(bp)) {
 326                 PMD_DRV_LOG(ERR,
 327                         "Cannot create Rx ring %d. Only %d rings available\n",
 328                         queue_idx, bp->max_rx_rings);
 329                 return -EINVAL;
 330         }
 331
 332         if (nb_desc < BNXT_MIN_RING_DESC || nb_desc > MAX_RX_DESC_CNT) {
 333                 PMD_DRV_LOG(ERR, "nb_desc %d is invalid\n", nb_desc);
 334                 return -EINVAL;
 335         }
 336
 337         if (eth_dev->data->rx_queues) {
 338                 rxq = eth_dev->data->rx_queues[queue_idx];
 339                 if (rxq)
 340                         bnxt_rx_queue_release_op(rxq);
 341         }
 342         rxq = rte_zmalloc_socket("bnxt_rx_queue", sizeof(struct bnxt_rx_queue),
 343                                  RTE_CACHE_LINE_SIZE, socket_id);
 344         if (!rxq) {
 345                 PMD_DRV_LOG(ERR, "bnxt_rx_queue allocation failed!\n");
 346                 return -ENOMEM;
 347         }
 348         rxq->bp = bp;
 349         rxq->mb_pool = mp;
 350         rxq->nb_rx_desc = nb_desc;
 351         rxq->rx_free_thresh =
 352                 RTE_MIN(rte_align32pow2(nb_desc) / 4, RTE_BNXT_MAX_RX_BURST);
 353
 354         if (rx_conf->rx_drop_en != BNXT_DEFAULT_RX_DROP_EN)
 355                 PMD_DRV_LOG(NOTICE,
 356                             "Per-queue config of drop-en is not supported.\n");
 357         rxq->drop_en = BNXT_DEFAULT_RX_DROP_EN;
 358
 359         PMD_DRV_LOG(DEBUG, "RX Buf MTU %d\n", eth_dev->data->mtu);
 360
 361         rc = bnxt_init_rx_ring_struct(rxq, socket_id);
 362         if (rc) {
 363                 PMD_DRV_LOG(ERR,
 364                             "init_rx_ring_struct failed!\n");
 365                 goto err;
 366         }
 367
 368         PMD_DRV_LOG(DEBUG, "RX Buf size is %d\n", rxq->rx_buf_size);
 369         rxq->queue_id = queue_idx;
 370         rxq->port_id = eth_dev->data->port_id;
 371         if (rx_offloads & DEV_RX_OFFLOAD_KEEP_CRC)
 372                 rxq->crc_len = RTE_ETHER_CRC_LEN;
 373         else
 374                 rxq->crc_len = 0;
 375
 376         eth_dev->data->rx_queues[queue_idx] = rxq;
 377         /* Allocate RX ring hardware descriptors */
 378         rc = bnxt_alloc_rings(bp, queue_idx, NULL, rxq, rxq->cp_ring, NULL,
 379                              "rxr");
 380         if (rc) {
 381                 PMD_DRV_LOG(ERR,
 382                             "ring_dma_zone_reserve for rx_ring failed!\n");
 383                 goto err;
 384         }
 385         rte_atomic64_init(&rxq->rx_mbuf_alloc_fail);
 386
 387         /* rxq 0 must not be stopped when used as async CPR */
 388         if (!BNXT_NUM_ASYNC_CPR(bp) && queue_idx == 0)
 389                 rxq->rx_deferred_start = false;
 390         else
 391                 rxq->rx_deferred_start = rx_conf->rx_deferred_start;
 392
 393         if (rxq->rx_deferred_start) {
 394                 queue_state = RTE_ETH_QUEUE_STATE_STOPPED;
 395                 rxq->rx_started = false;
 396         } else {
 397                 queue_state = RTE_ETH_QUEUE_STATE_STARTED;
 398                 rxq->rx_started = true;
 399         }
 400         eth_dev->data->rx_queue_state[queue_idx] = queue_state;
 401
 402         /* Configure mtu if it is different from what was configured before */
 403         if (!queue_idx)
 404                 bnxt_mtu_set_op(eth_dev, eth_dev->data->mtu);
 405
 406         return 0;
 407 err:
 408         bnxt_rx_queue_release_op(rxq);
 409         return rc;
 410 }
 411
 412 int
 413 bnxt_rx_queue_intr_enable_op(struct rte_eth_dev *eth_dev, uint16_t queue_id)
 414 {
 415         struct bnxt *bp = eth_dev->data->dev_private;
 416         struct bnxt_rx_queue *rxq;
 417         struct bnxt_cp_ring_info *cpr;
 418         int rc = 0;
 419
 420         rc = is_bnxt_in_error(bp);
 421         if (rc)
 422                 return rc;
 423
 424         if (eth_dev->data->rx_queues) {
 425                 rxq = eth_dev->data->rx_queues[queue_id];
 426                 if (!rxq)
 427                         return -EINVAL;
 428
 429                 cpr = rxq->cp_ring;
 430                 B_CP_DB_REARM(cpr, cpr->cp_raw_cons);
 431         }
 432         return rc;
 433 }
 434
 435 int
 436 bnxt_rx_queue_intr_disable_op(struct rte_eth_dev *eth_dev, uint16_t queue_id)
 437 {
 438         struct bnxt *bp = eth_dev->data->dev_private;
 439         struct bnxt_rx_queue *rxq;
 440         struct bnxt_cp_ring_info *cpr;
 441         int rc = 0;
 442
 443         rc = is_bnxt_in_error(bp);
 444         if (rc)
 445                 return rc;
 446
 447         if (eth_dev->data->rx_queues) {
 448                 rxq = eth_dev->data->rx_queues[queue_id];
 449                 if (!rxq)
 450                         return -EINVAL;
 451
 452                 cpr = rxq->cp_ring;
 453                 B_CP_DB_DISARM(cpr);
 454         }
 455         return rc;
 456 }
 457
 458 int bnxt_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 459 {
 460         struct bnxt *bp = dev->data->dev_private;
 461         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 462         struct bnxt_rx_queue *rxq = bp->rx_queues[rx_queue_id];
 463         struct bnxt_vnic_info *vnic = NULL;
 464         int rc = 0;
 465
 466         rc = is_bnxt_in_error(bp);
 467         if (rc)
 468                 return rc;
 469
 470         if (rxq == NULL) {
 471                 PMD_DRV_LOG(ERR, "Invalid Rx queue %d\n", rx_queue_id);
 472                 return -EINVAL;
 473         }
 474
 475         /* Set the queue state to started here.
 476          * We check the status of the queue while posting buffer.
 477          * If queue is it started, we do not post buffers for Rx.
 478          */
 479         rxq->rx_started = true;
 480         dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
 481
 482         bnxt_free_hwrm_rx_ring(bp, rx_queue_id);
 483         rc = bnxt_alloc_hwrm_rx_ring(bp, rx_queue_id);
 484         if (rc)
 485                 return rc;
 486
 487         if (BNXT_CHIP_P5(bp)) {
 488                 /* Reconfigure default receive ring and MRU. */
 489                 bnxt_hwrm_vnic_cfg(bp, rxq->vnic);
 490         }
 491         PMD_DRV_LOG(INFO, "Rx queue started %d\n", rx_queue_id);
 492
 493         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 494                 vnic = rxq->vnic;
 495
 496                 if (BNXT_HAS_RING_GRPS(bp)) {
 497                         if (vnic->fw_grp_ids[rx_queue_id] != INVALID_HW_RING_ID)
 498                                 return 0;
 499
 500                         vnic->fw_grp_ids[rx_queue_id] =
 501                                         bp->grp_info[rx_queue_id].fw_grp_id;
 502                         PMD_DRV_LOG(DEBUG,
 503                                     "vnic = %p fw_grp_id = %d\n",
 504                                     vnic, bp->grp_info[rx_queue_id].fw_grp_id);
 505                 }
 506
 507                 PMD_DRV_LOG(DEBUG, "Rx Queue Count %d\n", vnic->rx_queue_cnt);
 508                 rc = bnxt_vnic_rss_configure(bp, vnic);
 509         }
 510
 511         if (rc != 0) {
 512                 dev->data->rx_queue_state[rx_queue_id] =
 513                                 RTE_ETH_QUEUE_STATE_STOPPED;
 514                 rxq->rx_started = false;
 515         }
 516
 517         PMD_DRV_LOG(INFO,
 518                     "queue %d, rx_deferred_start %d, state %d!\n",
 519                     rx_queue_id, rxq->rx_deferred_start,
 520                     bp->eth_dev->data->rx_queue_state[rx_queue_id]);
 521
 522         return rc;
 523 }
 524
 525 int bnxt_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 526 {
 527         struct bnxt *bp = dev->data->dev_private;
 528         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 529         struct bnxt_vnic_info *vnic = NULL;
 530         struct bnxt_rx_queue *rxq = NULL;
 531         int active_queue_cnt = 0;
 532         int i, rc = 0;
 533
 534         rc = is_bnxt_in_error(bp);
 535         if (rc)
 536                 return rc;
 537
 538         /* For the stingray platform and other platforms needing tighter
 539          * control of resource utilization, Rx CQ 0 also works as
 540          * Default CQ for async notifications
 541          */
 542         if (!BNXT_NUM_ASYNC_CPR(bp) && !rx_queue_id) {
 543                 PMD_DRV_LOG(ERR, "Cannot stop Rx queue id %d\n", rx_queue_id);
 544                 return -EINVAL;
 545         }
 546
 547         rxq = bp->rx_queues[rx_queue_id];
 548         if (!rxq) {
 549                 PMD_DRV_LOG(ERR, "Invalid Rx queue %d\n", rx_queue_id);
 550                 return -EINVAL;
 551         }
 552
 553         vnic = rxq->vnic;
 554         if (!vnic) {
 555                 PMD_DRV_LOG(ERR, "VNIC not initialized for RxQ %d\n",
 556                             rx_queue_id);
 557                 return -EINVAL;
 558         }
 559
 560         dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 561         rxq->rx_started = false;
 562         PMD_DRV_LOG(DEBUG, "Rx queue stopped\n");
 563
 564         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 565                 if (BNXT_HAS_RING_GRPS(bp))
 566                         vnic->fw_grp_ids[rx_queue_id] = INVALID_HW_RING_ID;
 567
 568                 PMD_DRV_LOG(DEBUG, "Rx Queue Count %d\n", vnic->rx_queue_cnt);
 569                 rc = bnxt_vnic_rss_configure(bp, vnic);
 570         }
 571
 572         /* Compute current number of active receive queues. */
 573         for (i = vnic->start_grp_id; i < vnic->end_grp_id; i++)
 574                 if (bp->rx_queues[i]->rx_started)
 575                         active_queue_cnt++;
 576
 577         if (BNXT_CHIP_P5(bp)) {
 578                 /*
 579                  * For Thor, we need to ensure that the VNIC default receive
 580                  * ring corresponds to an active receive queue. When no queue
 581                  * is active, we need to temporarily set the MRU to zero so
 582                  * that packets are dropped early in the receive pipeline in
 583                  * order to prevent the VNIC default receive ring from being
 584                  * accessed.
 585                  */
 586                 if (active_queue_cnt == 0) {
 587                         uint16_t saved_mru = vnic->mru;
 588
 589                         vnic->mru = 0;
 590                         /* Reconfigure default receive ring and MRU. */
 591                         bnxt_hwrm_vnic_cfg(bp, vnic);
 592                         vnic->mru = saved_mru;
 593                 } else {
 594                         /* Reconfigure default receive ring. */
 595                         bnxt_hwrm_vnic_cfg(bp, vnic);
 596                 }
 597         } else if (active_queue_cnt) {
 598                 /*
 599                  * If the queue being stopped is the current default queue and
 600                  * there are other active queues, pick one of them as the
 601                  * default and reconfigure the vnic.
 602                  */
 603                 if (vnic->dflt_ring_grp == bp->grp_info[rx_queue_id].fw_grp_id) {
 604                         for (i = vnic->start_grp_id; i < vnic->end_grp_id; i++) {
 605                                 if (bp->rx_queues[i]->rx_started) {
 606                                         vnic->dflt_ring_grp =
 607                                                 bp->grp_info[i].fw_grp_id;
 608                                         bnxt_hwrm_vnic_cfg(bp, vnic);
 609                                         break;
 610                                 }
 611                         }
 612                 }
 613         }
 614
 615         if (rc == 0)
 616                 bnxt_rx_queue_release_mbufs(rxq);
 617
 618         return rc;
 619 }