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         PMD_DRV_LOG(DEBUG, "pools = %u nb_q_per_grp = %u\n",
 104                     pools, nb_q_per_grp);
 105         start_grp_id = 0;
 106         end_grp_id = nb_q_per_grp;
 107
 108         for (i = 0; i < pools; i++) {
 109                 vnic = &bp->vnic_info[i];
 110                 if (!vnic) {
 111                         PMD_DRV_LOG(ERR, "VNIC alloc failed\n");
 112                         rc = -ENOMEM;
 113                         goto err_out;
 114                 }
 115                 vnic->flags |= BNXT_VNIC_INFO_BCAST;
 116                 bp->nr_vnics++;
 117
 118                 for (j = 0; j < nb_q_per_grp; j++, ring_idx++) {
 119                         rxq = bp->eth_dev->data->rx_queues[ring_idx];
 120                         rxq->vnic = vnic;
 121                         PMD_DRV_LOG(DEBUG,
 122                                     "rxq[%d] = %p vnic[%d] = %p\n",
 123                                     ring_idx, rxq, i, vnic);
 124                 }
 125                 if (i == 0) {
 126                         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_VMDQ_DCB) {
 127                                 bp->eth_dev->data->promiscuous = 1;
 128                                 vnic->flags |= BNXT_VNIC_INFO_PROMISC;
 129                         }
 130                         vnic->func_default = true;
 131                 }
 132                 vnic->start_grp_id = start_grp_id;
 133                 vnic->end_grp_id = end_grp_id;
 134
 135                 if (i) {
 136                         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_VMDQ_DCB ||
 137                             !(dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS))
 138                                 vnic->rss_dflt_cr = true;
 139                         goto skip_filter_allocation;
 140                 }
 141                 filter = bnxt_alloc_filter(bp);
 142                 if (!filter) {
 143                         PMD_DRV_LOG(ERR, "L2 filter alloc failed\n");
 144                         rc = -ENOMEM;
 145                         goto err_out;
 146                 }
 147                 /*
 148                  * TODO: Configure & associate CFA rule for
 149                  * each VNIC for each VMDq with MACVLAN, MACVLAN+TC
 150                  */
 151                 STAILQ_INSERT_TAIL(&vnic->filter, filter, next);
 152
 153 skip_filter_allocation:
 154                 start_grp_id = end_grp_id;
 155                 end_grp_id += nb_q_per_grp;
 156         }
 157
 158 out:
 159         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 160                 struct rte_eth_rss_conf *rss = &dev_conf->rx_adv_conf.rss_conf;
 161                 uint16_t hash_type = 0;
 162
 163                 if (bp->flags & BNXT_FLAG_UPDATE_HASH) {
 164                         rss = &bp->rss_conf;
 165                         bp->flags &= ~BNXT_FLAG_UPDATE_HASH;
 166                 }
 167
 168                 if (rss->rss_hf & ETH_RSS_IPV4)
 169                         hash_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_IPV4;
 170                 if (rss->rss_hf & ETH_RSS_NONFRAG_IPV4_TCP)
 171                         hash_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_TCP_IPV4;
 172                 if (rss->rss_hf & ETH_RSS_NONFRAG_IPV4_UDP)
 173                         hash_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_UDP_IPV4;
 174                 if (rss->rss_hf & ETH_RSS_IPV6)
 175                         hash_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_IPV6;
 176                 if (rss->rss_hf & ETH_RSS_NONFRAG_IPV6_TCP)
 177                         hash_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_TCP_IPV6;
 178                 if (rss->rss_hf & ETH_RSS_NONFRAG_IPV6_UDP)
 179                         hash_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_UDP_IPV6;
 180
 181                 for (i = 0; i < bp->nr_vnics; i++) {
 182                         vnic = &bp->vnic_info[i];
 183                         vnic->hash_type = hash_type;
 184
 185                         /*
 186                          * Use the supplied key if the key length is
 187                          * acceptable and the rss_key is not NULL
 188                          */
 189                         if (rss->rss_key &&
 190                             rss->rss_key_len <= HW_HASH_KEY_SIZE)
 191                                 memcpy(vnic->rss_hash_key,
 192                                        rss->rss_key, rss->rss_key_len);
 193                 }
 194         }
 195
 196         return rc;
 197
 198 err_out:
 199         /* Free allocated vnic/filters */
 200
 201         return rc;
 202 }
 203
 204 void bnxt_rx_queue_release_mbufs(struct bnxt_rx_queue *rxq)
 205 {
 206         struct bnxt_sw_rx_bd *sw_ring;
 207         struct bnxt_tpa_info *tpa_info;
 208         uint16_t i;
 209
 210         rte_spinlock_lock(&rxq->lock);
 211
 212         if (rxq) {
 213                 sw_ring = rxq->rx_ring->rx_buf_ring;
 214                 if (sw_ring) {
 215                         for (i = 0;
 216                              i < rxq->rx_ring->rx_ring_struct->ring_size; i++) {
 217                                 if (sw_ring[i].mbuf) {
 218                                         rte_pktmbuf_free_seg(sw_ring[i].mbuf);
 219                                         sw_ring[i].mbuf = NULL;
 220                                 }
 221                         }
 222                 }
 223                 /* Free up mbufs in Agg ring */
 224                 sw_ring = rxq->rx_ring->ag_buf_ring;
 225                 if (sw_ring) {
 226                         for (i = 0;
 227                              i < rxq->rx_ring->ag_ring_struct->ring_size; i++) {
 228                                 if (sw_ring[i].mbuf) {
 229                                         rte_pktmbuf_free_seg(sw_ring[i].mbuf);
 230                                         sw_ring[i].mbuf = NULL;
 231                                 }
 232                         }
 233                 }
 234
 235                 /* Free up mbufs in TPA */
 236                 tpa_info = rxq->rx_ring->tpa_info;
 237                 if (tpa_info) {
 238                         for (i = 0; i < BNXT_TPA_MAX; i++) {
 239                                 if (tpa_info[i].mbuf) {
 240                                         rte_pktmbuf_free_seg(tpa_info[i].mbuf);
 241                                         tpa_info[i].mbuf = NULL;
 242                                 }
 243                         }
 244                 }
 245         }
 246
 247         rte_spinlock_unlock(&rxq->lock);
 248 }
 249
 250 void bnxt_free_rx_mbufs(struct bnxt *bp)
 251 {
 252         struct bnxt_rx_queue *rxq;
 253         int i;
 254
 255         for (i = 0; i < (int)bp->rx_nr_rings; i++) {
 256                 rxq = bp->rx_queues[i];
 257                 bnxt_rx_queue_release_mbufs(rxq);
 258         }
 259 }
 260
 261 void bnxt_rx_queue_release_op(void *rx_queue)
 262 {
 263         struct bnxt_rx_queue *rxq = (struct bnxt_rx_queue *)rx_queue;
 264
 265         if (rxq) {
 266                 if (is_bnxt_in_error(rxq->bp))
 267                         return;
 268
 269                 bnxt_rx_queue_release_mbufs(rxq);
 270
 271                 /* Free RX ring hardware descriptors */
 272                 bnxt_free_ring(rxq->rx_ring->rx_ring_struct);
 273                 /* Free RX Agg ring hardware descriptors */
 274                 bnxt_free_ring(rxq->rx_ring->ag_ring_struct);
 275
 276                 /* Free RX completion ring hardware descriptors */
 277                 bnxt_free_ring(rxq->cp_ring->cp_ring_struct);
 278
 279                 bnxt_free_rxq_stats(rxq);
 280                 rte_memzone_free(rxq->mz);
 281                 rxq->mz = NULL;
 282
 283                 rte_free(rxq);
 284         }
 285 }
 286
 287 int bnxt_rx_queue_setup_op(struct rte_eth_dev *eth_dev,
 288                                uint16_t queue_idx,
 289                                uint16_t nb_desc,
 290                                unsigned int socket_id,
 291                                const struct rte_eth_rxconf *rx_conf,
 292                                struct rte_mempool *mp)
 293 {
 294         struct bnxt *bp = eth_dev->data->dev_private;
 295         uint64_t rx_offloads = eth_dev->data->dev_conf.rxmode.offloads;
 296         struct bnxt_rx_queue *rxq;
 297         int rc = 0;
 298         uint8_t queue_state;
 299
 300         rc = is_bnxt_in_error(bp);
 301         if (rc)
 302                 return rc;
 303
 304         if (queue_idx >= bp->max_rx_rings) {
 305                 PMD_DRV_LOG(ERR,
 306                         "Cannot create Rx ring %d. Only %d rings available\n",
 307                         queue_idx, bp->max_rx_rings);
 308                 return -EINVAL;
 309         }
 310
 311         if (!nb_desc || nb_desc > MAX_RX_DESC_CNT) {
 312                 PMD_DRV_LOG(ERR, "nb_desc %d is invalid\n", nb_desc);
 313                 rc = -EINVAL;
 314                 goto out;
 315         }
 316
 317         if (eth_dev->data->rx_queues) {
 318                 rxq = eth_dev->data->rx_queues[queue_idx];
 319                 if (rxq)
 320                         bnxt_rx_queue_release_op(rxq);
 321         }
 322         rxq = rte_zmalloc_socket("bnxt_rx_queue", sizeof(struct bnxt_rx_queue),
 323                                  RTE_CACHE_LINE_SIZE, socket_id);
 324         if (!rxq) {
 325                 PMD_DRV_LOG(ERR, "bnxt_rx_queue allocation failed!\n");
 326                 rc = -ENOMEM;
 327                 goto out;
 328         }
 329         rxq->bp = bp;
 330         rxq->mb_pool = mp;
 331         rxq->nb_rx_desc = nb_desc;
 332         rxq->rx_free_thresh = rx_conf->rx_free_thresh;
 333
 334         PMD_DRV_LOG(DEBUG, "RX Buf MTU %d\n", eth_dev->data->mtu);
 335
 336         rc = bnxt_init_rx_ring_struct(rxq, socket_id);
 337         if (rc)
 338                 goto out;
 339
 340         PMD_DRV_LOG(DEBUG, "RX Buf size is %d\n", rxq->rx_buf_size);
 341         rxq->queue_id = queue_idx;
 342         rxq->port_id = eth_dev->data->port_id;
 343         if (rx_offloads & DEV_RX_OFFLOAD_KEEP_CRC)
 344                 rxq->crc_len = RTE_ETHER_CRC_LEN;
 345         else
 346                 rxq->crc_len = 0;
 347
 348         eth_dev->data->rx_queues[queue_idx] = rxq;
 349         /* Allocate RX ring hardware descriptors */
 350         if (bnxt_alloc_rings(bp, queue_idx, NULL, rxq, rxq->cp_ring,
 351                         rxq->nq_ring, "rxr")) {
 352                 PMD_DRV_LOG(ERR,
 353                         "ring_dma_zone_reserve for rx_ring failed!\n");
 354                 bnxt_rx_queue_release_op(rxq);
 355                 rc = -ENOMEM;
 356                 goto out;
 357         }
 358         rte_atomic64_init(&rxq->rx_mbuf_alloc_fail);
 359
 360         /* rxq 0 must not be stopped when used as async CPR */
 361         if (!BNXT_NUM_ASYNC_CPR(bp) && queue_idx == 0)
 362                 rxq->rx_deferred_start = false;
 363         else
 364                 rxq->rx_deferred_start = rx_conf->rx_deferred_start;
 365
 366         if (rxq->rx_deferred_start) {
 367                 queue_state = RTE_ETH_QUEUE_STATE_STOPPED;
 368                 rxq->rx_started = false;
 369         } else {
 370                 queue_state = RTE_ETH_QUEUE_STATE_STARTED;
 371                 rxq->rx_started = true;
 372         }
 373         eth_dev->data->rx_queue_state[queue_idx] = queue_state;
 374         rte_spinlock_init(&rxq->lock);
 375
 376 out:
 377         return rc;
 378 }
 379
 380 int
 381 bnxt_rx_queue_intr_enable_op(struct rte_eth_dev *eth_dev, uint16_t queue_id)
 382 {
 383         struct bnxt *bp = eth_dev->data->dev_private;
 384         struct bnxt_rx_queue *rxq;
 385         struct bnxt_cp_ring_info *cpr;
 386         int rc = 0;
 387
 388         rc = is_bnxt_in_error(bp);
 389         if (rc)
 390                 return rc;
 391
 392         if (eth_dev->data->rx_queues) {
 393                 rxq = eth_dev->data->rx_queues[queue_id];
 394                 if (!rxq) {
 395                         rc = -EINVAL;
 396                         return rc;
 397                 }
 398                 cpr = rxq->cp_ring;
 399                 B_CP_DB_REARM(cpr, cpr->cp_raw_cons);
 400         }
 401         return rc;
 402 }
 403
 404 int
 405 bnxt_rx_queue_intr_disable_op(struct rte_eth_dev *eth_dev, uint16_t queue_id)
 406 {
 407         struct bnxt *bp = eth_dev->data->dev_private;
 408         struct bnxt_rx_queue *rxq;
 409         struct bnxt_cp_ring_info *cpr;
 410         int rc = 0;
 411
 412         rc = is_bnxt_in_error(bp);
 413         if (rc)
 414                 return rc;
 415
 416         if (eth_dev->data->rx_queues) {
 417                 rxq = eth_dev->data->rx_queues[queue_id];
 418                 if (!rxq) {
 419                         rc = -EINVAL;
 420                         return rc;
 421                 }
 422                 cpr = rxq->cp_ring;
 423                 B_CP_DB_DISARM(cpr);
 424         }
 425         return rc;
 426 }
 427
 428 int bnxt_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 429 {
 430         struct bnxt *bp = dev->data->dev_private;
 431         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 432         struct bnxt_rx_queue *rxq = bp->rx_queues[rx_queue_id];
 433         struct bnxt_vnic_info *vnic = NULL;
 434         int rc = 0;
 435
 436         rc = is_bnxt_in_error(bp);
 437         if (rc)
 438                 return rc;
 439
 440         if (rxq == NULL) {
 441                 PMD_DRV_LOG(ERR, "Invalid Rx queue %d\n", rx_queue_id);
 442                 return -EINVAL;
 443         }
 444
 445         /* Set the queue state to started here.
 446          * We check the status of the queue while posting buffer.
 447          * If queue is it started, we do not post buffers for Rx.
 448          */
 449         rxq->rx_started = true;
 450         bnxt_free_hwrm_rx_ring(bp, rx_queue_id);
 451         rc = bnxt_alloc_hwrm_rx_ring(bp, rx_queue_id);
 452         if (rc)
 453                 return rc;
 454
 455         PMD_DRV_LOG(INFO, "Rx queue started %d\n", rx_queue_id);
 456
 457         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 458                 vnic = rxq->vnic;
 459
 460                 if (BNXT_HAS_RING_GRPS(bp)) {
 461                         if (vnic->fw_grp_ids[rx_queue_id] != INVALID_HW_RING_ID)
 462                                 return 0;
 463
 464                         vnic->fw_grp_ids[rx_queue_id] =
 465                                         bp->grp_info[rx_queue_id].fw_grp_id;
 466                         PMD_DRV_LOG(DEBUG,
 467                                     "vnic = %p fw_grp_id = %d\n",
 468                                     vnic, bp->grp_info[rx_queue_id].fw_grp_id);
 469                 }
 470
 471                 rc = bnxt_vnic_rss_configure(bp, vnic);
 472         }
 473
 474         if (rc == 0)
 475                 dev->data->rx_queue_state[rx_queue_id] =
 476                                 RTE_ETH_QUEUE_STATE_STARTED;
 477         else
 478                 rxq->rx_started = false;
 479
 480         PMD_DRV_LOG(INFO,
 481                     "queue %d, rx_deferred_start %d, state %d!\n",
 482                     rx_queue_id, rxq->rx_deferred_start,
 483                     bp->eth_dev->data->rx_queue_state[rx_queue_id]);
 484
 485         return rc;
 486 }
 487
 488 int bnxt_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 489 {
 490         struct bnxt *bp = dev->data->dev_private;
 491         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 492         struct bnxt_vnic_info *vnic = NULL;
 493         struct bnxt_rx_queue *rxq = NULL;
 494         int rc = 0;
 495
 496         rc = is_bnxt_in_error(bp);
 497         if (rc)
 498                 return rc;
 499
 500         /* For the stingray platform and other platforms needing tighter
 501          * control of resource utilization, Rx CQ 0 also works as
 502          * Default CQ for async notifications
 503          */
 504         if (!BNXT_NUM_ASYNC_CPR(bp) && !rx_queue_id) {
 505                 PMD_DRV_LOG(ERR, "Cannot stop Rx queue id %d\n", rx_queue_id);
 506                 return -EINVAL;
 507         }
 508
 509         rxq = bp->rx_queues[rx_queue_id];
 510
 511         if (rxq == NULL) {
 512                 PMD_DRV_LOG(ERR, "Invalid Rx queue %d\n", rx_queue_id);
 513                 return -EINVAL;
 514         }
 515
 516         dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 517         rxq->rx_started = false;
 518         PMD_DRV_LOG(DEBUG, "Rx queue stopped\n");
 519
 520         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 521                 vnic = rxq->vnic;
 522                 if (BNXT_HAS_RING_GRPS(bp))
 523                         vnic->fw_grp_ids[rx_queue_id] = INVALID_HW_RING_ID;
 524                 rc = bnxt_vnic_rss_configure(bp, vnic);
 525         }
 526
 527         if (rc == 0)
 528                 bnxt_rx_queue_release_mbufs(rxq);
 529
 530         return rc;
 531 }