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                 STAILQ_INSERT_TAIL(&vnic->filter, filter, next);
  68                 goto out;
  69         }
  70
  71         /* Multi-queue mode */
  72         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_VMDQ_DCB_RSS) {
  73                 /* VMDq ONLY, VMDq+RSS, VMDq+DCB, VMDq+DCB+RSS */
  74
  75                 switch (dev_conf->rxmode.mq_mode) {
  76                 case ETH_MQ_RX_VMDQ_RSS:
  77                 case ETH_MQ_RX_VMDQ_ONLY:
  78                         /* FALLTHROUGH */
  79                         /* ETH_8/64_POOLs */
  80                         pools = conf->nb_queue_pools;
  81                         /* For each pool, allocate MACVLAN CFA rule & VNIC */
  82                         max_pools = RTE_MIN(bp->max_vnics,
  83                                             RTE_MIN(bp->max_l2_ctx,
  84                                             RTE_MIN(bp->max_rsscos_ctx,
  85                                                     ETH_64_POOLS)));
  86                         PMD_DRV_LOG(DEBUG,
  87                                     "pools = %u max_pools = %u\n",
  88                                     pools, max_pools);
  89                         if (pools > max_pools)
  90                                 pools = max_pools;
  91                         break;
  92                 case ETH_MQ_RX_RSS:
  93                         pools = 1;
  94                         break;
  95                 default:
  96                         PMD_DRV_LOG(ERR, "Unsupported mq_mod %d\n",
  97                                 dev_conf->rxmode.mq_mode);
  98                         rc = -EINVAL;
  99                         goto err_out;
 100                 }
 101         }
 102         nb_q_per_grp = bp->rx_cp_nr_rings / pools;
 103         bp->rx_num_qs_per_vnic = nb_q_per_grp;
 104         PMD_DRV_LOG(DEBUG, "pools = %u nb_q_per_grp = %u\n",
 105                     pools, nb_q_per_grp);
 106         start_grp_id = 0;
 107         end_grp_id = nb_q_per_grp;
 108
 109         for (i = 0; i < pools; i++) {
 110                 vnic = &bp->vnic_info[i];
 111                 if (!vnic) {
 112                         PMD_DRV_LOG(ERR, "VNIC alloc failed\n");
 113                         rc = -ENOMEM;
 114                         goto err_out;
 115                 }
 116                 vnic->flags |= BNXT_VNIC_INFO_BCAST;
 117                 bp->nr_vnics++;
 118
 119                 for (j = 0; j < nb_q_per_grp; j++, ring_idx++) {
 120                         rxq = bp->eth_dev->data->rx_queues[ring_idx];
 121                         rxq->vnic = vnic;
 122                         PMD_DRV_LOG(DEBUG,
 123                                     "rxq[%d] = %p vnic[%d] = %p\n",
 124                                     ring_idx, rxq, i, vnic);
 125                 }
 126                 if (i == 0) {
 127                         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_VMDQ_DCB) {
 128                                 bp->eth_dev->data->promiscuous = 1;
 129                                 vnic->flags |= BNXT_VNIC_INFO_PROMISC;
 130                         }
 131                         vnic->func_default = true;
 132                 }
 133                 vnic->start_grp_id = start_grp_id;
 134                 vnic->end_grp_id = end_grp_id;
 135
 136                 if (i) {
 137                         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_VMDQ_DCB ||
 138                             !(dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS))
 139                                 vnic->rss_dflt_cr = true;
 140                         goto skip_filter_allocation;
 141                 }
 142                 filter = bnxt_alloc_filter(bp);
 143                 if (!filter) {
 144                         PMD_DRV_LOG(ERR, "L2 filter alloc failed\n");
 145                         rc = -ENOMEM;
 146                         goto err_out;
 147                 }
 148                 /*
 149                  * TODO: Configure & associate CFA rule for
 150                  * each VNIC for each VMDq with MACVLAN, MACVLAN+TC
 151                  */
 152                 STAILQ_INSERT_TAIL(&vnic->filter, filter, next);
 153
 154 skip_filter_allocation:
 155                 start_grp_id = end_grp_id;
 156                 end_grp_id += nb_q_per_grp;
 157         }
 158
 159 out:
 160         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 161                 struct rte_eth_rss_conf *rss = &dev_conf->rx_adv_conf.rss_conf;
 162
 163                 if (bp->flags & BNXT_FLAG_UPDATE_HASH) {
 164                         rss = &bp->rss_conf;
 165                         bp->flags &= ~BNXT_FLAG_UPDATE_HASH;
 166                 }
 167
 168                 for (i = 0; i < bp->nr_vnics; i++) {
 169                         vnic = &bp->vnic_info[i];
 170                         vnic->hash_type =
 171                                 bnxt_rte_to_hwrm_hash_types(rss->rss_hf);
 172
 173                         /*
 174                          * Use the supplied key if the key length is
 175                          * acceptable and the rss_key is not NULL
 176                          */
 177                         if (rss->rss_key &&
 178                             rss->rss_key_len <= HW_HASH_KEY_SIZE)
 179                                 memcpy(vnic->rss_hash_key,
 180                                        rss->rss_key, rss->rss_key_len);
 181                 }
 182         }
 183
 184         return rc;
 185
 186 err_out:
 187         /* Free allocated vnic/filters */
 188
 189         return rc;
 190 }
 191
 192 void bnxt_rx_queue_release_mbufs(struct bnxt_rx_queue *rxq)
 193 {
 194         struct bnxt_sw_rx_bd *sw_ring;
 195         struct bnxt_tpa_info *tpa_info;
 196         uint16_t i;
 197
 198         if (!rxq)
 199                 return;
 200
 201         rte_spinlock_lock(&rxq->lock);
 202
 203         sw_ring = rxq->rx_ring->rx_buf_ring;
 204         if (sw_ring) {
 205                 for (i = 0;
 206                      i < rxq->rx_ring->rx_ring_struct->ring_size; i++) {
 207                         if (sw_ring[i].mbuf) {
 208                                 rte_pktmbuf_free_seg(sw_ring[i].mbuf);
 209                                 sw_ring[i].mbuf = NULL;
 210                         }
 211                 }
 212         }
 213         /* Free up mbufs in Agg ring */
 214         sw_ring = rxq->rx_ring->ag_buf_ring;
 215         if (sw_ring) {
 216                 for (i = 0;
 217                      i < rxq->rx_ring->ag_ring_struct->ring_size; i++) {
 218                         if (sw_ring[i].mbuf) {
 219                                 rte_pktmbuf_free_seg(sw_ring[i].mbuf);
 220                                 sw_ring[i].mbuf = NULL;
 221                         }
 222                 }
 223         }
 224
 225         /* Free up mbufs in TPA */
 226         tpa_info = rxq->rx_ring->tpa_info;
 227         if (tpa_info) {
 228                 for (i = 0; i < BNXT_TPA_MAX; i++) {
 229                         if (tpa_info[i].mbuf) {
 230                                 rte_pktmbuf_free_seg(tpa_info[i].mbuf);
 231                                 tpa_info[i].mbuf = NULL;
 232                         }
 233                 }
 234         }
 235
 236         rte_spinlock_unlock(&rxq->lock);
 237 }
 238
 239 void bnxt_free_rx_mbufs(struct bnxt *bp)
 240 {
 241         struct bnxt_rx_queue *rxq;
 242         int i;
 243
 244         for (i = 0; i < (int)bp->rx_nr_rings; i++) {
 245                 rxq = bp->rx_queues[i];
 246                 bnxt_rx_queue_release_mbufs(rxq);
 247         }
 248 }
 249
 250 void bnxt_rx_queue_release_op(void *rx_queue)
 251 {
 252         struct bnxt_rx_queue *rxq = (struct bnxt_rx_queue *)rx_queue;
 253
 254         if (rxq) {
 255                 if (is_bnxt_in_error(rxq->bp))
 256                         return;
 257
 258                 bnxt_rx_queue_release_mbufs(rxq);
 259
 260                 /* Free RX ring hardware descriptors */
 261                 bnxt_free_ring(rxq->rx_ring->rx_ring_struct);
 262                 /* Free RX Agg ring hardware descriptors */
 263                 bnxt_free_ring(rxq->rx_ring->ag_ring_struct);
 264
 265                 /* Free RX completion ring hardware descriptors */
 266                 bnxt_free_ring(rxq->cp_ring->cp_ring_struct);
 267
 268                 bnxt_free_rxq_stats(rxq);
 269                 rte_memzone_free(rxq->mz);
 270                 rxq->mz = NULL;
 271
 272                 rte_free(rxq);
 273         }
 274 }
 275
 276 int bnxt_rx_queue_setup_op(struct rte_eth_dev *eth_dev,
 277                                uint16_t queue_idx,
 278                                uint16_t nb_desc,
 279                                unsigned int socket_id,
 280                                const struct rte_eth_rxconf *rx_conf,
 281                                struct rte_mempool *mp)
 282 {
 283         struct bnxt *bp = eth_dev->data->dev_private;
 284         uint64_t rx_offloads = eth_dev->data->dev_conf.rxmode.offloads;
 285         struct bnxt_rx_queue *rxq;
 286         int rc = 0;
 287         uint8_t queue_state;
 288
 289         rc = is_bnxt_in_error(bp);
 290         if (rc)
 291                 return rc;
 292
 293         if (queue_idx >= bp->max_rx_rings) {
 294                 PMD_DRV_LOG(ERR,
 295                         "Cannot create Rx ring %d. Only %d rings available\n",
 296                         queue_idx, bp->max_rx_rings);
 297                 return -EINVAL;
 298         }
 299
 300         if (!nb_desc || nb_desc > MAX_RX_DESC_CNT) {
 301                 PMD_DRV_LOG(ERR, "nb_desc %d is invalid\n", nb_desc);
 302                 rc = -EINVAL;
 303                 goto out;
 304         }
 305
 306         if (eth_dev->data->rx_queues) {
 307                 rxq = eth_dev->data->rx_queues[queue_idx];
 308                 if (rxq)
 309                         bnxt_rx_queue_release_op(rxq);
 310         }
 311         rxq = rte_zmalloc_socket("bnxt_rx_queue", sizeof(struct bnxt_rx_queue),
 312                                  RTE_CACHE_LINE_SIZE, socket_id);
 313         if (!rxq) {
 314                 PMD_DRV_LOG(ERR, "bnxt_rx_queue allocation failed!\n");
 315                 rc = -ENOMEM;
 316                 goto out;
 317         }
 318         rxq->bp = bp;
 319         rxq->mb_pool = mp;
 320         rxq->nb_rx_desc = nb_desc;
 321         rxq->rx_free_thresh = rx_conf->rx_free_thresh;
 322
 323         PMD_DRV_LOG(DEBUG, "RX Buf MTU %d\n", eth_dev->data->mtu);
 324
 325         rc = bnxt_init_rx_ring_struct(rxq, socket_id);
 326         if (rc)
 327                 goto out;
 328
 329         PMD_DRV_LOG(DEBUG, "RX Buf size is %d\n", rxq->rx_buf_size);
 330         rxq->queue_id = queue_idx;
 331         rxq->port_id = eth_dev->data->port_id;
 332         if (rx_offloads & DEV_RX_OFFLOAD_KEEP_CRC)
 333                 rxq->crc_len = RTE_ETHER_CRC_LEN;
 334         else
 335                 rxq->crc_len = 0;
 336
 337         eth_dev->data->rx_queues[queue_idx] = rxq;
 338         /* Allocate RX ring hardware descriptors */
 339         if (bnxt_alloc_rings(bp, queue_idx, NULL, rxq, rxq->cp_ring,
 340                         rxq->nq_ring, "rxr")) {
 341                 PMD_DRV_LOG(ERR,
 342                         "ring_dma_zone_reserve for rx_ring failed!\n");
 343                 bnxt_rx_queue_release_op(rxq);
 344                 rc = -ENOMEM;
 345                 goto out;
 346         }
 347         rte_atomic64_init(&rxq->rx_mbuf_alloc_fail);
 348
 349         /* rxq 0 must not be stopped when used as async CPR */
 350         if (!BNXT_NUM_ASYNC_CPR(bp) && queue_idx == 0)
 351                 rxq->rx_deferred_start = false;
 352         else
 353                 rxq->rx_deferred_start = rx_conf->rx_deferred_start;
 354
 355         if (rxq->rx_deferred_start) {
 356                 queue_state = RTE_ETH_QUEUE_STATE_STOPPED;
 357                 rxq->rx_started = false;
 358         } else {
 359                 queue_state = RTE_ETH_QUEUE_STATE_STARTED;
 360                 rxq->rx_started = true;
 361         }
 362         eth_dev->data->rx_queue_state[queue_idx] = queue_state;
 363         rte_spinlock_init(&rxq->lock);
 364
 365 out:
 366         return rc;
 367 }
 368
 369 int
 370 bnxt_rx_queue_intr_enable_op(struct rte_eth_dev *eth_dev, uint16_t queue_id)
 371 {
 372         struct bnxt *bp = eth_dev->data->dev_private;
 373         struct bnxt_rx_queue *rxq;
 374         struct bnxt_cp_ring_info *cpr;
 375         int rc = 0;
 376
 377         rc = is_bnxt_in_error(bp);
 378         if (rc)
 379                 return rc;
 380
 381         if (eth_dev->data->rx_queues) {
 382                 rxq = eth_dev->data->rx_queues[queue_id];
 383                 if (!rxq) {
 384                         rc = -EINVAL;
 385                         return rc;
 386                 }
 387                 cpr = rxq->cp_ring;
 388                 B_CP_DB_REARM(cpr, cpr->cp_raw_cons);
 389         }
 390         return rc;
 391 }
 392
 393 int
 394 bnxt_rx_queue_intr_disable_op(struct rte_eth_dev *eth_dev, uint16_t queue_id)
 395 {
 396         struct bnxt *bp = eth_dev->data->dev_private;
 397         struct bnxt_rx_queue *rxq;
 398         struct bnxt_cp_ring_info *cpr;
 399         int rc = 0;
 400
 401         rc = is_bnxt_in_error(bp);
 402         if (rc)
 403                 return rc;
 404
 405         if (eth_dev->data->rx_queues) {
 406                 rxq = eth_dev->data->rx_queues[queue_id];
 407                 if (!rxq) {
 408                         rc = -EINVAL;
 409                         return rc;
 410                 }
 411                 cpr = rxq->cp_ring;
 412                 B_CP_DB_DISARM(cpr);
 413         }
 414         return rc;
 415 }
 416
 417 int bnxt_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 418 {
 419         struct bnxt *bp = dev->data->dev_private;
 420         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 421         struct bnxt_rx_queue *rxq = bp->rx_queues[rx_queue_id];
 422         struct bnxt_vnic_info *vnic = NULL;
 423         int rc = 0;
 424
 425         rc = is_bnxt_in_error(bp);
 426         if (rc)
 427                 return rc;
 428
 429         if (rxq == NULL) {
 430                 PMD_DRV_LOG(ERR, "Invalid Rx queue %d\n", rx_queue_id);
 431                 return -EINVAL;
 432         }
 433
 434         /* Set the queue state to started here.
 435          * We check the status of the queue while posting buffer.
 436          * If queue is it started, we do not post buffers for Rx.
 437          */
 438         rxq->rx_started = true;
 439         bnxt_free_hwrm_rx_ring(bp, rx_queue_id);
 440         rc = bnxt_alloc_hwrm_rx_ring(bp, rx_queue_id);
 441         if (rc)
 442                 return rc;
 443
 444         PMD_DRV_LOG(INFO, "Rx queue started %d\n", rx_queue_id);
 445
 446         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 447                 vnic = rxq->vnic;
 448
 449                 if (BNXT_HAS_RING_GRPS(bp)) {
 450                         if (vnic->fw_grp_ids[rx_queue_id] != INVALID_HW_RING_ID)
 451                                 return 0;
 452
 453                         vnic->fw_grp_ids[rx_queue_id] =
 454                                         bp->grp_info[rx_queue_id].fw_grp_id;
 455                         PMD_DRV_LOG(DEBUG,
 456                                     "vnic = %p fw_grp_id = %d\n",
 457                                     vnic, bp->grp_info[rx_queue_id].fw_grp_id);
 458                 }
 459
 460                 PMD_DRV_LOG(DEBUG, "Rx Queue Count %d\n", vnic->rx_queue_cnt);
 461                 if (vnic->rx_queue_cnt > 1)
 462                         rc = bnxt_vnic_rss_configure(bp, vnic);
 463         }
 464
 465         if (rc == 0)
 466                 dev->data->rx_queue_state[rx_queue_id] =
 467                                 RTE_ETH_QUEUE_STATE_STARTED;
 468         else
 469                 rxq->rx_started = false;
 470
 471         PMD_DRV_LOG(INFO,
 472                     "queue %d, rx_deferred_start %d, state %d!\n",
 473                     rx_queue_id, rxq->rx_deferred_start,
 474                     bp->eth_dev->data->rx_queue_state[rx_queue_id]);
 475
 476         return rc;
 477 }
 478
 479 int bnxt_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 480 {
 481         struct bnxt *bp = dev->data->dev_private;
 482         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 483         struct bnxt_vnic_info *vnic = NULL;
 484         struct bnxt_rx_queue *rxq = NULL;
 485         int rc = 0;
 486
 487         rc = is_bnxt_in_error(bp);
 488         if (rc)
 489                 return rc;
 490
 491         /* For the stingray platform and other platforms needing tighter
 492          * control of resource utilization, Rx CQ 0 also works as
 493          * Default CQ for async notifications
 494          */
 495         if (!BNXT_NUM_ASYNC_CPR(bp) && !rx_queue_id) {
 496                 PMD_DRV_LOG(ERR, "Cannot stop Rx queue id %d\n", rx_queue_id);
 497                 return -EINVAL;
 498         }
 499
 500         rxq = bp->rx_queues[rx_queue_id];
 501
 502         if (rxq == NULL) {
 503                 PMD_DRV_LOG(ERR, "Invalid Rx queue %d\n", rx_queue_id);
 504                 return -EINVAL;
 505         }
 506
 507         dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 508         rxq->rx_started = false;
 509         PMD_DRV_LOG(DEBUG, "Rx queue stopped\n");
 510
 511         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 512                 vnic = rxq->vnic;
 513                 if (BNXT_HAS_RING_GRPS(bp))
 514                         vnic->fw_grp_ids[rx_queue_id] = INVALID_HW_RING_ID;
 515
 516                 PMD_DRV_LOG(DEBUG, "Rx Queue Count %d\n", vnic->rx_queue_cnt);
 517                 if (vnic->rx_queue_cnt > 1)
 518                         rc = bnxt_vnic_rss_configure(bp, vnic);
 519         }
 520
 521         if (rc == 0)
 522                 bnxt_rx_queue_release_mbufs(rxq);
 523
 524         return rc;
 525 }