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                 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         }
 104         nb_q_per_grp = bp->rx_cp_nr_rings / pools;
 105         bp->rx_num_qs_per_vnic = nb_q_per_grp;
 106         PMD_DRV_LOG(DEBUG, "pools = %u nb_q_per_grp = %u\n",
 107                     pools, nb_q_per_grp);
 108         start_grp_id = 0;
 109         end_grp_id = nb_q_per_grp;
 110
 111         for (i = 0; i < pools; i++) {
 112                 vnic = &bp->vnic_info[i];
 113                 if (!vnic) {
 114                         PMD_DRV_LOG(ERR, "VNIC alloc failed\n");
 115                         rc = -ENOMEM;
 116                         goto err_out;
 117                 }
 118                 vnic->flags |= BNXT_VNIC_INFO_BCAST;
 119                 bp->nr_vnics++;
 120
 121                 for (j = 0; j < nb_q_per_grp; j++, ring_idx++) {
 122                         rxq = bp->eth_dev->data->rx_queues[ring_idx];
 123                         rxq->vnic = vnic;
 124                         PMD_DRV_LOG(DEBUG,
 125                                     "rxq[%d] = %p vnic[%d] = %p\n",
 126                                     ring_idx, rxq, i, vnic);
 127                 }
 128                 if (i == 0) {
 129                         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_VMDQ_DCB) {
 130                                 bp->eth_dev->data->promiscuous = 1;
 131                                 vnic->flags |= BNXT_VNIC_INFO_PROMISC;
 132                         }
 133                         vnic->func_default = true;
 134                 }
 135                 vnic->start_grp_id = start_grp_id;
 136                 vnic->end_grp_id = end_grp_id;
 137
 138                 if (i) {
 139                         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_VMDQ_DCB ||
 140                             !(dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS))
 141                                 vnic->rss_dflt_cr = true;
 142                         goto skip_filter_allocation;
 143                 }
 144                 filter = bnxt_alloc_filter(bp);
 145                 if (!filter) {
 146                         PMD_DRV_LOG(ERR, "L2 filter alloc failed\n");
 147                         rc = -ENOMEM;
 148                         goto err_out;
 149                 }
 150                 filter->flags |= HWRM_CFA_L2_FILTER_ALLOC_INPUT_FLAGS_OUTERMOST;
 151                 /*
 152                  * TODO: Configure & associate CFA rule for
 153                  * each VNIC for each VMDq with MACVLAN, MACVLAN+TC
 154                  */
 155                 STAILQ_INSERT_TAIL(&vnic->filter, filter, next);
 156
 157 skip_filter_allocation:
 158                 start_grp_id = end_grp_id;
 159                 end_grp_id += nb_q_per_grp;
 160         }
 161
 162 out:
 163         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 164                 struct rte_eth_rss_conf *rss = &dev_conf->rx_adv_conf.rss_conf;
 165
 166                 if (bp->flags & BNXT_FLAG_UPDATE_HASH) {
 167                         rss = &bp->rss_conf;
 168                         bp->flags &= ~BNXT_FLAG_UPDATE_HASH;
 169                 }
 170
 171                 for (i = 0; i < bp->nr_vnics; i++) {
 172                         vnic = &bp->vnic_info[i];
 173                         vnic->hash_type =
 174                                 bnxt_rte_to_hwrm_hash_types(rss->rss_hf);
 175
 176                         /*
 177                          * Use the supplied key if the key length is
 178                          * acceptable and the rss_key is not NULL
 179                          */
 180                         if (rss->rss_key &&
 181                             rss->rss_key_len <= HW_HASH_KEY_SIZE)
 182                                 memcpy(vnic->rss_hash_key,
 183                                        rss->rss_key, rss->rss_key_len);
 184                 }
 185         }
 186
 187         return rc;
 188
 189 err_out:
 190         /* Free allocated vnic/filters */
 191
 192         return rc;
 193 }
 194
 195 void bnxt_rx_queue_release_mbufs(struct bnxt_rx_queue *rxq)
 196 {
 197         struct bnxt_sw_rx_bd *sw_ring;
 198         struct bnxt_tpa_info *tpa_info;
 199         uint16_t i;
 200
 201         if (!rxq)
 202                 return;
 203
 204         rte_spinlock_lock(&rxq->lock);
 205
 206         sw_ring = rxq->rx_ring->rx_buf_ring;
 207         if (sw_ring) {
 208                 for (i = 0;
 209                      i < rxq->rx_ring->rx_ring_struct->ring_size; i++) {
 210                         if (sw_ring[i].mbuf) {
 211                                 rte_pktmbuf_free_seg(sw_ring[i].mbuf);
 212                                 sw_ring[i].mbuf = NULL;
 213                         }
 214                 }
 215         }
 216         /* Free up mbufs in Agg ring */
 217         sw_ring = rxq->rx_ring->ag_buf_ring;
 218         if (sw_ring) {
 219                 for (i = 0;
 220                      i < rxq->rx_ring->ag_ring_struct->ring_size; i++) {
 221                         if (sw_ring[i].mbuf) {
 222                                 rte_pktmbuf_free_seg(sw_ring[i].mbuf);
 223                                 sw_ring[i].mbuf = NULL;
 224                         }
 225                 }
 226         }
 227
 228         /* Free up mbufs in TPA */
 229         tpa_info = rxq->rx_ring->tpa_info;
 230         if (tpa_info) {
 231                 int max_aggs = BNXT_TPA_MAX_AGGS(rxq->bp);
 232
 233                 for (i = 0; i < max_aggs; i++) {
 234                         if (tpa_info[i].mbuf) {
 235                                 rte_pktmbuf_free_seg(tpa_info[i].mbuf);
 236                                 tpa_info[i].mbuf = NULL;
 237                         }
 238                 }
 239         }
 240
 241         rte_spinlock_unlock(&rxq->lock);
 242 }
 243
 244 void bnxt_free_rx_mbufs(struct bnxt *bp)
 245 {
 246         struct bnxt_rx_queue *rxq;
 247         int i;
 248
 249         for (i = 0; i < (int)bp->rx_nr_rings; i++) {
 250                 rxq = bp->rx_queues[i];
 251                 bnxt_rx_queue_release_mbufs(rxq);
 252         }
 253 }
 254
 255 void bnxt_rx_queue_release_op(void *rx_queue)
 256 {
 257         struct bnxt_rx_queue *rxq = (struct bnxt_rx_queue *)rx_queue;
 258
 259         if (rxq) {
 260                 if (is_bnxt_in_error(rxq->bp))
 261                         return;
 262
 263                 bnxt_rx_queue_release_mbufs(rxq);
 264
 265                 /* Free RX ring hardware descriptors */
 266                 bnxt_free_ring(rxq->rx_ring->rx_ring_struct);
 267                 /* Free RX Agg ring hardware descriptors */
 268                 bnxt_free_ring(rxq->rx_ring->ag_ring_struct);
 269
 270                 /* Free RX completion ring hardware descriptors */
 271                 bnxt_free_ring(rxq->cp_ring->cp_ring_struct);
 272
 273                 bnxt_free_rxq_stats(rxq);
 274                 rte_memzone_free(rxq->mz);
 275                 rxq->mz = NULL;
 276
 277                 rte_free(rxq);
 278         }
 279 }
 280
 281 int bnxt_rx_queue_setup_op(struct rte_eth_dev *eth_dev,
 282                                uint16_t queue_idx,
 283                                uint16_t nb_desc,
 284                                unsigned int socket_id,
 285                                const struct rte_eth_rxconf *rx_conf,
 286                                struct rte_mempool *mp)
 287 {
 288         struct bnxt *bp = eth_dev->data->dev_private;
 289         uint64_t rx_offloads = eth_dev->data->dev_conf.rxmode.offloads;
 290         struct bnxt_rx_queue *rxq;
 291         int rc = 0;
 292         uint8_t queue_state;
 293
 294         rc = is_bnxt_in_error(bp);
 295         if (rc)
 296                 return rc;
 297
 298         if (queue_idx >= bp->max_rx_rings) {
 299                 PMD_DRV_LOG(ERR,
 300                         "Cannot create Rx ring %d. Only %d rings available\n",
 301                         queue_idx, bp->max_rx_rings);
 302                 return -EINVAL;
 303         }
 304
 305         if (!nb_desc || nb_desc > MAX_RX_DESC_CNT) {
 306                 PMD_DRV_LOG(ERR, "nb_desc %d is invalid\n", nb_desc);
 307                 rc = -EINVAL;
 308                 goto out;
 309         }
 310
 311         if (eth_dev->data->rx_queues) {
 312                 rxq = eth_dev->data->rx_queues[queue_idx];
 313                 if (rxq)
 314                         bnxt_rx_queue_release_op(rxq);
 315         }
 316         rxq = rte_zmalloc_socket("bnxt_rx_queue", sizeof(struct bnxt_rx_queue),
 317                                  RTE_CACHE_LINE_SIZE, socket_id);
 318         if (!rxq) {
 319                 PMD_DRV_LOG(ERR, "bnxt_rx_queue allocation failed!\n");
 320                 rc = -ENOMEM;
 321                 goto out;
 322         }
 323         rxq->bp = bp;
 324         rxq->mb_pool = mp;
 325         rxq->nb_rx_desc = nb_desc;
 326         rxq->rx_free_thresh = rx_conf->rx_free_thresh;
 327
 328         PMD_DRV_LOG(DEBUG, "RX Buf MTU %d\n", eth_dev->data->mtu);
 329
 330         rc = bnxt_init_rx_ring_struct(rxq, socket_id);
 331         if (rc)
 332                 goto out;
 333
 334         PMD_DRV_LOG(DEBUG, "RX Buf size is %d\n", rxq->rx_buf_size);
 335         rxq->queue_id = queue_idx;
 336         rxq->port_id = eth_dev->data->port_id;
 337         if (rx_offloads & DEV_RX_OFFLOAD_KEEP_CRC)
 338                 rxq->crc_len = RTE_ETHER_CRC_LEN;
 339         else
 340                 rxq->crc_len = 0;
 341
 342         eth_dev->data->rx_queues[queue_idx] = rxq;
 343         /* Allocate RX ring hardware descriptors */
 344         if (bnxt_alloc_rings(bp, queue_idx, NULL, rxq, rxq->cp_ring,
 345                         rxq->nq_ring, "rxr")) {
 346                 PMD_DRV_LOG(ERR,
 347                         "ring_dma_zone_reserve for rx_ring failed!\n");
 348                 bnxt_rx_queue_release_op(rxq);
 349                 rc = -ENOMEM;
 350                 goto out;
 351         }
 352         rte_atomic64_init(&rxq->rx_mbuf_alloc_fail);
 353
 354         /* rxq 0 must not be stopped when used as async CPR */
 355         if (!BNXT_NUM_ASYNC_CPR(bp) && queue_idx == 0)
 356                 rxq->rx_deferred_start = false;
 357         else
 358                 rxq->rx_deferred_start = rx_conf->rx_deferred_start;
 359
 360         if (rxq->rx_deferred_start) {
 361                 queue_state = RTE_ETH_QUEUE_STATE_STOPPED;
 362                 rxq->rx_started = false;
 363         } else {
 364                 queue_state = RTE_ETH_QUEUE_STATE_STARTED;
 365                 rxq->rx_started = true;
 366         }
 367         eth_dev->data->rx_queue_state[queue_idx] = queue_state;
 368         rte_spinlock_init(&rxq->lock);
 369
 370 out:
 371         return rc;
 372 }
 373
 374 int
 375 bnxt_rx_queue_intr_enable_op(struct rte_eth_dev *eth_dev, uint16_t queue_id)
 376 {
 377         struct bnxt *bp = eth_dev->data->dev_private;
 378         struct bnxt_rx_queue *rxq;
 379         struct bnxt_cp_ring_info *cpr;
 380         int rc = 0;
 381
 382         rc = is_bnxt_in_error(bp);
 383         if (rc)
 384                 return rc;
 385
 386         if (eth_dev->data->rx_queues) {
 387                 rxq = eth_dev->data->rx_queues[queue_id];
 388                 if (!rxq) {
 389                         rc = -EINVAL;
 390                         return rc;
 391                 }
 392                 cpr = rxq->cp_ring;
 393                 B_CP_DB_REARM(cpr, cpr->cp_raw_cons);
 394         }
 395         return rc;
 396 }
 397
 398 int
 399 bnxt_rx_queue_intr_disable_op(struct rte_eth_dev *eth_dev, uint16_t queue_id)
 400 {
 401         struct bnxt *bp = eth_dev->data->dev_private;
 402         struct bnxt_rx_queue *rxq;
 403         struct bnxt_cp_ring_info *cpr;
 404         int rc = 0;
 405
 406         rc = is_bnxt_in_error(bp);
 407         if (rc)
 408                 return rc;
 409
 410         if (eth_dev->data->rx_queues) {
 411                 rxq = eth_dev->data->rx_queues[queue_id];
 412                 if (!rxq) {
 413                         rc = -EINVAL;
 414                         return rc;
 415                 }
 416                 cpr = rxq->cp_ring;
 417                 B_CP_DB_DISARM(cpr);
 418         }
 419         return rc;
 420 }
 421
 422 int bnxt_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 423 {
 424         struct bnxt *bp = dev->data->dev_private;
 425         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 426         struct bnxt_rx_queue *rxq = bp->rx_queues[rx_queue_id];
 427         struct bnxt_vnic_info *vnic = NULL;
 428         int rc = 0;
 429
 430         rc = is_bnxt_in_error(bp);
 431         if (rc)
 432                 return rc;
 433
 434         if (rxq == NULL) {
 435                 PMD_DRV_LOG(ERR, "Invalid Rx queue %d\n", rx_queue_id);
 436                 return -EINVAL;
 437         }
 438
 439         /* Set the queue state to started here.
 440          * We check the status of the queue while posting buffer.
 441          * If queue is it started, we do not post buffers for Rx.
 442          */
 443         rxq->rx_started = true;
 444         bnxt_free_hwrm_rx_ring(bp, rx_queue_id);
 445         rc = bnxt_alloc_hwrm_rx_ring(bp, rx_queue_id);
 446         if (rc)
 447                 return rc;
 448
 449         PMD_DRV_LOG(INFO, "Rx queue started %d\n", rx_queue_id);
 450
 451         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 452                 vnic = rxq->vnic;
 453
 454                 if (BNXT_HAS_RING_GRPS(bp)) {
 455                         if (vnic->fw_grp_ids[rx_queue_id] != INVALID_HW_RING_ID)
 456                                 return 0;
 457
 458                         vnic->fw_grp_ids[rx_queue_id] =
 459                                         bp->grp_info[rx_queue_id].fw_grp_id;
 460                         PMD_DRV_LOG(DEBUG,
 461                                     "vnic = %p fw_grp_id = %d\n",
 462                                     vnic, bp->grp_info[rx_queue_id].fw_grp_id);
 463                 }
 464
 465                 PMD_DRV_LOG(DEBUG, "Rx Queue Count %d\n", vnic->rx_queue_cnt);
 466                 if (vnic->rx_queue_cnt > 1)
 467                         rc = bnxt_vnic_rss_configure(bp, vnic);
 468         }
 469
 470         if (rc == 0)
 471                 dev->data->rx_queue_state[rx_queue_id] =
 472                                 RTE_ETH_QUEUE_STATE_STARTED;
 473         else
 474                 rxq->rx_started = false;
 475
 476         PMD_DRV_LOG(INFO,
 477                     "queue %d, rx_deferred_start %d, state %d!\n",
 478                     rx_queue_id, rxq->rx_deferred_start,
 479                     bp->eth_dev->data->rx_queue_state[rx_queue_id]);
 480
 481         return rc;
 482 }
 483
 484 int bnxt_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 485 {
 486         struct bnxt *bp = dev->data->dev_private;
 487         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 488         struct bnxt_vnic_info *vnic = NULL;
 489         struct bnxt_rx_queue *rxq = NULL;
 490         int rc = 0;
 491
 492         rc = is_bnxt_in_error(bp);
 493         if (rc)
 494                 return rc;
 495
 496         /* For the stingray platform and other platforms needing tighter
 497          * control of resource utilization, Rx CQ 0 also works as
 498          * Default CQ for async notifications
 499          */
 500         if (!BNXT_NUM_ASYNC_CPR(bp) && !rx_queue_id) {
 501                 PMD_DRV_LOG(ERR, "Cannot stop Rx queue id %d\n", rx_queue_id);
 502                 return -EINVAL;
 503         }
 504
 505         rxq = bp->rx_queues[rx_queue_id];
 506
 507         if (rxq == NULL) {
 508                 PMD_DRV_LOG(ERR, "Invalid Rx queue %d\n", rx_queue_id);
 509                 return -EINVAL;
 510         }
 511
 512         dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 513         rxq->rx_started = false;
 514         PMD_DRV_LOG(DEBUG, "Rx queue stopped\n");
 515
 516         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 517                 vnic = rxq->vnic;
 518                 if (BNXT_HAS_RING_GRPS(bp))
 519                         vnic->fw_grp_ids[rx_queue_id] = INVALID_HW_RING_ID;
 520
 521                 PMD_DRV_LOG(DEBUG, "Rx Queue Count %d\n", vnic->rx_queue_cnt);
 522                 if (vnic->rx_queue_cnt > 1)
 523                         rc = bnxt_vnic_rss_configure(bp, vnic);
 524         }
 525
 526         if (rc == 0)
 527                 bnxt_rx_queue_release_mbufs(rxq);
 528
 529         return rc;
 530 }