drivers/net/bnxt/bnxt_rxq.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2014-2018 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_cpr.h"
  12 #include "bnxt_filter.h"
  13 #include "bnxt_hwrm.h"
  14 #include "bnxt_ring.h"
  15 #include "bnxt_rxq.h"
  16 #include "bnxt_rxr.h"
  17 #include "bnxt_vnic.h"
  18 #include "hsi_struct_def_dpdk.h"
  19
  20 /*
  21  * RX Queues
  22  */
  23
  24 void bnxt_free_rxq_stats(struct bnxt_rx_queue *rxq)
  25 {
  26         if (rxq && rxq->cp_ring && rxq->cp_ring->hw_stats)
  27                 rxq->cp_ring->hw_stats = NULL;
  28 }
  29
  30 int bnxt_mq_rx_configure(struct bnxt *bp)
  31 {
  32         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
  33         const struct rte_eth_vmdq_rx_conf *conf =
  34                     &dev_conf->rx_adv_conf.vmdq_rx_conf;
  35         unsigned int i, j, nb_q_per_grp = 1, ring_idx = 0;
  36         int start_grp_id, end_grp_id = 1, rc = 0;
  37         struct bnxt_vnic_info *vnic;
  38         struct bnxt_filter_info *filter;
  39         enum rte_eth_nb_pools pools = bp->rx_cp_nr_rings, max_pools = 0;
  40         struct bnxt_rx_queue *rxq;
  41
  42         bp->nr_vnics = 0;
  43
  44         /* Single queue mode */
  45         if (bp->rx_cp_nr_rings < 2) {
  46                 vnic = &bp->vnic_info[0];
  47                 if (!vnic) {
  48                         PMD_DRV_LOG(ERR, "VNIC alloc failed\n");
  49                         rc = -ENOMEM;
  50                         goto err_out;
  51                 }
  52                 vnic->flags |= BNXT_VNIC_INFO_BCAST;
  53                 bp->nr_vnics++;
  54
  55                 rxq = bp->eth_dev->data->rx_queues[0];
  56                 rxq->vnic = vnic;
  57
  58                 vnic->func_default = true;
  59                 vnic->start_grp_id = 0;
  60                 vnic->end_grp_id = vnic->start_grp_id;
  61                 filter = bnxt_alloc_filter(bp);
  62                 if (!filter) {
  63                         PMD_DRV_LOG(ERR, "L2 filter alloc failed\n");
  64                         rc = -ENOMEM;
  65                         goto err_out;
  66                 }
  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                         /* FALLTHROUGH */
  80                         /* ETH_8/64_POOLs */
  81                         pools = conf->nb_queue_pools;
  82                         /* For each pool, allocate MACVLAN CFA rule & VNIC */
  83                         max_pools = RTE_MIN(bp->max_vnics,
  84                                             RTE_MIN(bp->max_l2_ctx,
  85                                             RTE_MIN(bp->max_rsscos_ctx,
  86                                                     ETH_64_POOLS)));
  87                         PMD_DRV_LOG(DEBUG,
  88                                     "pools = %u max_pools = %u\n",
  89                                     pools, max_pools);
  90                         if (pools > max_pools)
  91                                 pools = max_pools;
  92                         break;
  93                 case ETH_MQ_RX_RSS:
  94                         pools = 1;
  95                         break;
  96                 default:
  97                         PMD_DRV_LOG(ERR, "Unsupported mq_mod %d\n",
  98                                 dev_conf->rxmode.mq_mode);
  99                         rc = -EINVAL;
 100                         goto err_out;
 101                 }
 102         }
 103         nb_q_per_grp = bp->rx_cp_nr_rings / pools;
 104         bp->rx_num_qs_per_vnic = nb_q_per_grp;
 105         PMD_DRV_LOG(DEBUG, "pools = %u nb_q_per_grp = %u\n",
 106                     pools, nb_q_per_grp);
 107         start_grp_id = 0;
 108         end_grp_id = nb_q_per_grp;
 109
 110         for (i = 0; i < pools; i++) {
 111                 vnic = &bp->vnic_info[i];
 112                 if (!vnic) {
 113                         PMD_DRV_LOG(ERR, "VNIC alloc failed\n");
 114                         rc = -ENOMEM;
 115                         goto err_out;
 116                 }
 117                 vnic->flags |= BNXT_VNIC_INFO_BCAST;
 118                 bp->nr_vnics++;
 119
 120                 for (j = 0; j < nb_q_per_grp; j++, ring_idx++) {
 121                         rxq = bp->eth_dev->data->rx_queues[ring_idx];
 122                         rxq->vnic = vnic;
 123                         PMD_DRV_LOG(DEBUG,
 124                                     "rxq[%d] = %p vnic[%d] = %p\n",
 125                                     ring_idx, rxq, i, vnic);
 126                 }
 127                 if (i == 0) {
 128                         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_VMDQ_DCB) {
 129                                 bp->eth_dev->data->promiscuous = 1;
 130                                 vnic->flags |= BNXT_VNIC_INFO_PROMISC;
 131                         }
 132                         vnic->func_default = true;
 133                 }
 134                 vnic->start_grp_id = start_grp_id;
 135                 vnic->end_grp_id = end_grp_id;
 136
 137                 if (i) {
 138                         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_VMDQ_DCB ||
 139                             !(dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS))
 140                                 vnic->rss_dflt_cr = true;
 141                         goto skip_filter_allocation;
 142                 }
 143                 filter = bnxt_alloc_filter(bp);
 144                 if (!filter) {
 145                         PMD_DRV_LOG(ERR, "L2 filter alloc failed\n");
 146                         rc = -ENOMEM;
 147                         goto err_out;
 148                 }
 149                 filter->flags |= HWRM_CFA_L2_FILTER_ALLOC_INPUT_FLAGS_OUTERMOST;
 150                 /*
 151                  * TODO: Configure & associate CFA rule for
 152                  * each VNIC for each VMDq with MACVLAN, MACVLAN+TC
 153                  */
 154                 STAILQ_INSERT_TAIL(&vnic->filter, filter, next);
 155
 156 skip_filter_allocation:
 157                 start_grp_id = end_grp_id;
 158                 end_grp_id += nb_q_per_grp;
 159         }
 160
 161 out:
 162         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 163                 struct rte_eth_rss_conf *rss = &dev_conf->rx_adv_conf.rss_conf;
 164
 165                 if (bp->flags & BNXT_FLAG_UPDATE_HASH) {
 166                         rss = &bp->rss_conf;
 167                         bp->flags &= ~BNXT_FLAG_UPDATE_HASH;
 168                 }
 169
 170                 for (i = 0; i < bp->nr_vnics; i++) {
 171                         vnic = &bp->vnic_info[i];
 172                         vnic->hash_type =
 173                                 bnxt_rte_to_hwrm_hash_types(rss->rss_hf);
 174
 175                         /*
 176                          * Use the supplied key if the key length is
 177                          * acceptable and the rss_key is not NULL
 178                          */
 179                         if (rss->rss_key &&
 180                             rss->rss_key_len <= HW_HASH_KEY_SIZE)
 181                                 memcpy(vnic->rss_hash_key,
 182                                        rss->rss_key, rss->rss_key_len);
 183                 }
 184         }
 185
 186         return rc;
 187
 188 err_out:
 189         /* Free allocated vnic/filters */
 190
 191         return rc;
 192 }
 193
 194 void bnxt_rx_queue_release_mbufs(struct bnxt_rx_queue *rxq)
 195 {
 196         struct bnxt_sw_rx_bd *sw_ring;
 197         struct bnxt_tpa_info *tpa_info;
 198         uint16_t i;
 199
 200         if (!rxq)
 201                 return;
 202
 203         rte_spinlock_lock(&rxq->lock);
 204
 205         sw_ring = rxq->rx_ring->rx_buf_ring;
 206         if (sw_ring) {
 207                 for (i = 0;
 208                      i < rxq->rx_ring->rx_ring_struct->ring_size; i++) {
 209                         if (sw_ring[i].mbuf) {
 210                                 rte_pktmbuf_free_seg(sw_ring[i].mbuf);
 211                                 sw_ring[i].mbuf = NULL;
 212                         }
 213                 }
 214         }
 215         /* Free up mbufs in Agg ring */
 216         sw_ring = rxq->rx_ring->ag_buf_ring;
 217         if (sw_ring) {
 218                 for (i = 0;
 219                      i < rxq->rx_ring->ag_ring_struct->ring_size; i++) {
 220                         if (sw_ring[i].mbuf) {
 221                                 rte_pktmbuf_free_seg(sw_ring[i].mbuf);
 222                                 sw_ring[i].mbuf = NULL;
 223                         }
 224                 }
 225         }
 226
 227         /* Free up mbufs in TPA */
 228         tpa_info = rxq->rx_ring->tpa_info;
 229         if (tpa_info) {
 230                 for (i = 0; i < BNXT_TPA_MAX; i++) {
 231                         if (tpa_info[i].mbuf) {
 232                                 rte_pktmbuf_free_seg(tpa_info[i].mbuf);
 233                                 tpa_info[i].mbuf = NULL;
 234                         }
 235                 }
 236         }
 237
 238         rte_spinlock_unlock(&rxq->lock);
 239 }
 240
 241 void bnxt_free_rx_mbufs(struct bnxt *bp)
 242 {
 243         struct bnxt_rx_queue *rxq;
 244         int i;
 245
 246         for (i = 0; i < (int)bp->rx_nr_rings; i++) {
 247                 rxq = bp->rx_queues[i];
 248                 bnxt_rx_queue_release_mbufs(rxq);
 249         }
 250 }
 251
 252 void bnxt_rx_queue_release_op(void *rx_queue)
 253 {
 254         struct bnxt_rx_queue *rxq = (struct bnxt_rx_queue *)rx_queue;
 255
 256         if (rxq) {
 257                 if (is_bnxt_in_error(rxq->bp))
 258                         return;
 259
 260                 bnxt_rx_queue_release_mbufs(rxq);
 261
 262                 /* Free RX ring hardware descriptors */
 263                 bnxt_free_ring(rxq->rx_ring->rx_ring_struct);
 264                 /* Free RX Agg ring hardware descriptors */
 265                 bnxt_free_ring(rxq->rx_ring->ag_ring_struct);
 266
 267                 /* Free RX completion ring hardware descriptors */
 268                 bnxt_free_ring(rxq->cp_ring->cp_ring_struct);
 269
 270                 bnxt_free_rxq_stats(rxq);
 271                 rte_memzone_free(rxq->mz);
 272                 rxq->mz = NULL;
 273
 274                 rte_free(rxq);
 275         }
 276 }
 277
 278 int bnxt_rx_queue_setup_op(struct rte_eth_dev *eth_dev,
 279                                uint16_t queue_idx,
 280                                uint16_t nb_desc,
 281                                unsigned int socket_id,
 282                                const struct rte_eth_rxconf *rx_conf,
 283                                struct rte_mempool *mp)
 284 {
 285         struct bnxt *bp = eth_dev->data->dev_private;
 286         uint64_t rx_offloads = eth_dev->data->dev_conf.rxmode.offloads;
 287         struct bnxt_rx_queue *rxq;
 288         int rc = 0;
 289         uint8_t queue_state;
 290
 291         rc = is_bnxt_in_error(bp);
 292         if (rc)
 293                 return rc;
 294
 295         if (queue_idx >= bp->max_rx_rings) {
 296                 PMD_DRV_LOG(ERR,
 297                         "Cannot create Rx ring %d. Only %d rings available\n",
 298                         queue_idx, bp->max_rx_rings);
 299                 return -EINVAL;
 300         }
 301
 302         if (!nb_desc || nb_desc > MAX_RX_DESC_CNT) {
 303                 PMD_DRV_LOG(ERR, "nb_desc %d is invalid\n", nb_desc);
 304                 rc = -EINVAL;
 305                 goto out;
 306         }
 307
 308         if (eth_dev->data->rx_queues) {
 309                 rxq = eth_dev->data->rx_queues[queue_idx];
 310                 if (rxq)
 311                         bnxt_rx_queue_release_op(rxq);
 312         }
 313         rxq = rte_zmalloc_socket("bnxt_rx_queue", sizeof(struct bnxt_rx_queue),
 314                                  RTE_CACHE_LINE_SIZE, socket_id);
 315         if (!rxq) {
 316                 PMD_DRV_LOG(ERR, "bnxt_rx_queue allocation failed!\n");
 317                 rc = -ENOMEM;
 318                 goto out;
 319         }
 320         rxq->bp = bp;
 321         rxq->mb_pool = mp;
 322         rxq->nb_rx_desc = nb_desc;
 323         rxq->rx_free_thresh = rx_conf->rx_free_thresh;
 324
 325         PMD_DRV_LOG(DEBUG, "RX Buf MTU %d\n", eth_dev->data->mtu);
 326
 327         rc = bnxt_init_rx_ring_struct(rxq, socket_id);
 328         if (rc)
 329                 goto out;
 330
 331         PMD_DRV_LOG(DEBUG, "RX Buf size is %d\n", rxq->rx_buf_size);
 332         rxq->queue_id = queue_idx;
 333         rxq->port_id = eth_dev->data->port_id;
 334         if (rx_offloads & DEV_RX_OFFLOAD_KEEP_CRC)
 335                 rxq->crc_len = RTE_ETHER_CRC_LEN;
 336         else
 337                 rxq->crc_len = 0;
 338
 339         eth_dev->data->rx_queues[queue_idx] = rxq;
 340         /* Allocate RX ring hardware descriptors */
 341         if (bnxt_alloc_rings(bp, queue_idx, NULL, rxq, rxq->cp_ring,
 342                         rxq->nq_ring, "rxr")) {
 343                 PMD_DRV_LOG(ERR,
 344                         "ring_dma_zone_reserve for rx_ring failed!\n");
 345                 bnxt_rx_queue_release_op(rxq);
 346                 rc = -ENOMEM;
 347                 goto out;
 348         }
 349         rte_atomic64_init(&rxq->rx_mbuf_alloc_fail);
 350
 351         /* rxq 0 must not be stopped when used as async CPR */
 352         if (!BNXT_NUM_ASYNC_CPR(bp) && queue_idx == 0)
 353                 rxq->rx_deferred_start = false;
 354         else
 355                 rxq->rx_deferred_start = rx_conf->rx_deferred_start;
 356
 357         if (rxq->rx_deferred_start) {
 358                 queue_state = RTE_ETH_QUEUE_STATE_STOPPED;
 359                 rxq->rx_started = false;
 360         } else {
 361                 queue_state = RTE_ETH_QUEUE_STATE_STARTED;
 362                 rxq->rx_started = true;
 363         }
 364         eth_dev->data->rx_queue_state[queue_idx] = queue_state;
 365         rte_spinlock_init(&rxq->lock);
 366
 367 out:
 368         return rc;
 369 }
 370
 371 int
 372 bnxt_rx_queue_intr_enable_op(struct rte_eth_dev *eth_dev, uint16_t queue_id)
 373 {
 374         struct bnxt *bp = eth_dev->data->dev_private;
 375         struct bnxt_rx_queue *rxq;
 376         struct bnxt_cp_ring_info *cpr;
 377         int rc = 0;
 378
 379         rc = is_bnxt_in_error(bp);
 380         if (rc)
 381                 return rc;
 382
 383         if (eth_dev->data->rx_queues) {
 384                 rxq = eth_dev->data->rx_queues[queue_id];
 385                 if (!rxq) {
 386                         rc = -EINVAL;
 387                         return rc;
 388                 }
 389                 cpr = rxq->cp_ring;
 390                 B_CP_DB_REARM(cpr, cpr->cp_raw_cons);
 391         }
 392         return rc;
 393 }
 394
 395 int
 396 bnxt_rx_queue_intr_disable_op(struct rte_eth_dev *eth_dev, uint16_t queue_id)
 397 {
 398         struct bnxt *bp = eth_dev->data->dev_private;
 399         struct bnxt_rx_queue *rxq;
 400         struct bnxt_cp_ring_info *cpr;
 401         int rc = 0;
 402
 403         rc = is_bnxt_in_error(bp);
 404         if (rc)
 405                 return rc;
 406
 407         if (eth_dev->data->rx_queues) {
 408                 rxq = eth_dev->data->rx_queues[queue_id];
 409                 if (!rxq) {
 410                         rc = -EINVAL;
 411                         return rc;
 412                 }
 413                 cpr = rxq->cp_ring;
 414                 B_CP_DB_DISARM(cpr);
 415         }
 416         return rc;
 417 }
 418
 419 int bnxt_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 420 {
 421         struct bnxt *bp = dev->data->dev_private;
 422         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 423         struct bnxt_rx_queue *rxq = bp->rx_queues[rx_queue_id];
 424         struct bnxt_vnic_info *vnic = NULL;
 425         int rc = 0;
 426
 427         rc = is_bnxt_in_error(bp);
 428         if (rc)
 429                 return rc;
 430
 431         if (rxq == NULL) {
 432                 PMD_DRV_LOG(ERR, "Invalid Rx queue %d\n", rx_queue_id);
 433                 return -EINVAL;
 434         }
 435
 436         /* Set the queue state to started here.
 437          * We check the status of the queue while posting buffer.
 438          * If queue is it started, we do not post buffers for Rx.
 439          */
 440         rxq->rx_started = true;
 441         bnxt_free_hwrm_rx_ring(bp, rx_queue_id);
 442         rc = bnxt_alloc_hwrm_rx_ring(bp, rx_queue_id);
 443         if (rc)
 444                 return rc;
 445
 446         PMD_DRV_LOG(INFO, "Rx queue started %d\n", rx_queue_id);
 447
 448         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 449                 vnic = rxq->vnic;
 450
 451                 if (BNXT_HAS_RING_GRPS(bp)) {
 452                         if (vnic->fw_grp_ids[rx_queue_id] != INVALID_HW_RING_ID)
 453                                 return 0;
 454
 455                         vnic->fw_grp_ids[rx_queue_id] =
 456                                         bp->grp_info[rx_queue_id].fw_grp_id;
 457                         PMD_DRV_LOG(DEBUG,
 458                                     "vnic = %p fw_grp_id = %d\n",
 459                                     vnic, bp->grp_info[rx_queue_id].fw_grp_id);
 460                 }
 461
 462                 PMD_DRV_LOG(DEBUG, "Rx Queue Count %d\n", vnic->rx_queue_cnt);
 463                 if (vnic->rx_queue_cnt > 1)
 464                         rc = bnxt_vnic_rss_configure(bp, vnic);
 465         }
 466
 467         if (rc == 0)
 468                 dev->data->rx_queue_state[rx_queue_id] =
 469                                 RTE_ETH_QUEUE_STATE_STARTED;
 470         else
 471                 rxq->rx_started = false;
 472
 473         PMD_DRV_LOG(INFO,
 474                     "queue %d, rx_deferred_start %d, state %d!\n",
 475                     rx_queue_id, rxq->rx_deferred_start,
 476                     bp->eth_dev->data->rx_queue_state[rx_queue_id]);
 477
 478         return rc;
 479 }
 480
 481 int bnxt_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 482 {
 483         struct bnxt *bp = dev->data->dev_private;
 484         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 485         struct bnxt_vnic_info *vnic = NULL;
 486         struct bnxt_rx_queue *rxq = NULL;
 487         int rc = 0;
 488
 489         rc = is_bnxt_in_error(bp);
 490         if (rc)
 491                 return rc;
 492
 493         /* For the stingray platform and other platforms needing tighter
 494          * control of resource utilization, Rx CQ 0 also works as
 495          * Default CQ for async notifications
 496          */
 497         if (!BNXT_NUM_ASYNC_CPR(bp) && !rx_queue_id) {
 498                 PMD_DRV_LOG(ERR, "Cannot stop Rx queue id %d\n", rx_queue_id);
 499                 return -EINVAL;
 500         }
 501
 502         rxq = bp->rx_queues[rx_queue_id];
 503
 504         if (rxq == NULL) {
 505                 PMD_DRV_LOG(ERR, "Invalid Rx queue %d\n", rx_queue_id);
 506                 return -EINVAL;
 507         }
 508
 509         dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 510         rxq->rx_started = false;
 511         PMD_DRV_LOG(DEBUG, "Rx queue stopped\n");
 512
 513         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 514                 vnic = rxq->vnic;
 515                 if (BNXT_HAS_RING_GRPS(bp))
 516                         vnic->fw_grp_ids[rx_queue_id] = INVALID_HW_RING_ID;
 517
 518                 PMD_DRV_LOG(DEBUG, "Rx Queue Count %d\n", vnic->rx_queue_cnt);
 519                 if (vnic->rx_queue_cnt > 1)
 520                         rc = bnxt_vnic_rss_configure(bp, vnic);
 521         }
 522
 523         if (rc == 0)
 524                 bnxt_rx_queue_release_mbufs(rxq);
 525
 526         return rc;
 527 }