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 = bnxt_alloc_vnic(bp);
  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                 STAILQ_INSERT_TAIL(&bp->ff_pool[0], vnic, next);
  54                 bp->nr_vnics++;
  55
  56                 rxq = bp->eth_dev->data->rx_queues[0];
  57                 rxq->vnic = vnic;
  58
  59                 vnic->func_default = true;
  60                 vnic->ff_pool_idx = 0;
  61                 vnic->start_grp_id = 0;
  62                 vnic->end_grp_id = vnic->start_grp_id;
  63                 filter = bnxt_alloc_filter(bp);
  64                 if (!filter) {
  65                         PMD_DRV_LOG(ERR, "L2 filter alloc failed\n");
  66                         rc = -ENOMEM;
  67                         goto err_out;
  68                 }
  69                 STAILQ_INSERT_TAIL(&vnic->filter, filter, next);
  70                 goto out;
  71         }
  72
  73         /* Multi-queue mode */
  74         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_VMDQ_DCB_RSS) {
  75                 /* VMDq ONLY, VMDq+RSS, VMDq+DCB, VMDq+DCB+RSS */
  76
  77                 switch (dev_conf->rxmode.mq_mode) {
  78                 case ETH_MQ_RX_VMDQ_RSS:
  79                 case ETH_MQ_RX_VMDQ_ONLY:
  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                         if (pools > max_pools)
  89                                 pools = max_pools;
  90                         break;
  91                 case ETH_MQ_RX_RSS:
  92                         pools = 1;
  93                         break;
  94                 default:
  95                         PMD_DRV_LOG(ERR, "Unsupported mq_mod %d\n",
  96                                 dev_conf->rxmode.mq_mode);
  97                         rc = -EINVAL;
  98                         goto err_out;
  99                 }
 100         }
 101
 102         nb_q_per_grp = bp->rx_cp_nr_rings / pools;
 103         start_grp_id = 0;
 104         end_grp_id = nb_q_per_grp;
 105
 106         for (i = 0; i < pools; i++) {
 107                 vnic = bnxt_alloc_vnic(bp);
 108                 if (!vnic) {
 109                         PMD_DRV_LOG(ERR, "VNIC alloc failed\n");
 110                         rc = -ENOMEM;
 111                         goto err_out;
 112                 }
 113                 vnic->flags |= BNXT_VNIC_INFO_BCAST;
 114                 STAILQ_INSERT_TAIL(&bp->ff_pool[i], vnic, next);
 115                 bp->nr_vnics++;
 116
 117                 for (j = 0; j < nb_q_per_grp; j++, ring_idx++) {
 118                         rxq = bp->eth_dev->data->rx_queues[ring_idx];
 119                         rxq->vnic = vnic;
 120                 }
 121                 if (i == 0) {
 122                         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_VMDQ_DCB) {
 123                                 bp->eth_dev->data->promiscuous = 1;
 124                                 vnic->flags |= BNXT_VNIC_INFO_PROMISC;
 125                         }
 126                         vnic->func_default = true;
 127                 }
 128                 vnic->ff_pool_idx = i;
 129                 vnic->start_grp_id = start_grp_id;
 130                 vnic->end_grp_id = end_grp_id;
 131
 132                 if (i) {
 133                         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_VMDQ_DCB ||
 134                             !(dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS))
 135                                 vnic->rss_dflt_cr = true;
 136                         goto skip_filter_allocation;
 137                 }
 138                 filter = bnxt_alloc_filter(bp);
 139                 if (!filter) {
 140                         PMD_DRV_LOG(ERR, "L2 filter alloc failed\n");
 141                         rc = -ENOMEM;
 142                         goto err_out;
 143                 }
 144                 /*
 145                  * TODO: Configure & associate CFA rule for
 146                  * each VNIC for each VMDq with MACVLAN, MACVLAN+TC
 147                  */
 148                 STAILQ_INSERT_TAIL(&vnic->filter, filter, next);
 149
 150 skip_filter_allocation:
 151                 start_grp_id = end_grp_id;
 152                 end_grp_id += nb_q_per_grp;
 153         }
 154
 155 out:
 156         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 157                 struct rte_eth_rss_conf *rss = &dev_conf->rx_adv_conf.rss_conf;
 158                 uint16_t hash_type = 0;
 159
 160                 if (bp->flags & BNXT_FLAG_UPDATE_HASH) {
 161                         rss = &bp->rss_conf;
 162                         bp->flags &= ~BNXT_FLAG_UPDATE_HASH;
 163                 }
 164
 165                 if (rss->rss_hf & ETH_RSS_IPV4)
 166                         hash_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_IPV4;
 167                 if (rss->rss_hf & ETH_RSS_NONFRAG_IPV4_TCP)
 168                         hash_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_TCP_IPV4;
 169                 if (rss->rss_hf & ETH_RSS_NONFRAG_IPV4_UDP)
 170                         hash_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_UDP_IPV4;
 171                 if (rss->rss_hf & ETH_RSS_IPV6)
 172                         hash_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_IPV6;
 173                 if (rss->rss_hf & ETH_RSS_NONFRAG_IPV6_TCP)
 174                         hash_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_TCP_IPV6;
 175                 if (rss->rss_hf & ETH_RSS_NONFRAG_IPV6_UDP)
 176                         hash_type |= HWRM_VNIC_RSS_CFG_INPUT_HASH_TYPE_UDP_IPV6;
 177
 178                 for (i = 0; i < bp->nr_vnics; i++) {
 179                         STAILQ_FOREACH(vnic, &bp->ff_pool[i], next) {
 180                         vnic->hash_type = hash_type;
 181
 182                         /*
 183                          * Use the supplied key if the key length is
 184                          * acceptable and the rss_key is not NULL
 185                          */
 186                         if (rss->rss_key &&
 187                             rss->rss_key_len <= HW_HASH_KEY_SIZE)
 188                                 memcpy(vnic->rss_hash_key,
 189                                        rss->rss_key, rss->rss_key_len);
 190                         }
 191                 }
 192         }
 193
 194         return rc;
 195
 196 err_out:
 197         /* Free allocated vnic/filters */
 198
 199         return rc;
 200 }
 201
 202 void bnxt_rx_queue_release_mbufs(struct bnxt_rx_queue *rxq)
 203 {
 204         struct bnxt_sw_rx_bd *sw_ring;
 205         struct bnxt_tpa_info *tpa_info;
 206         uint16_t i;
 207
 208         rte_spinlock_lock(&rxq->lock);
 209
 210         if (rxq) {
 211                 sw_ring = rxq->rx_ring->rx_buf_ring;
 212                 if (sw_ring) {
 213                         for (i = 0;
 214                              i < rxq->rx_ring->rx_ring_struct->ring_size; i++) {
 215                                 if (sw_ring[i].mbuf) {
 216                                         rte_pktmbuf_free_seg(sw_ring[i].mbuf);
 217                                         sw_ring[i].mbuf = NULL;
 218                                 }
 219                         }
 220                 }
 221                 /* Free up mbufs in Agg ring */
 222                 sw_ring = rxq->rx_ring->ag_buf_ring;
 223                 if (sw_ring) {
 224                         for (i = 0;
 225                              i < rxq->rx_ring->ag_ring_struct->ring_size; i++) {
 226                                 if (sw_ring[i].mbuf) {
 227                                         rte_pktmbuf_free_seg(sw_ring[i].mbuf);
 228                                         sw_ring[i].mbuf = NULL;
 229                                 }
 230                         }
 231                 }
 232
 233                 /* Free up mbufs in TPA */
 234                 tpa_info = rxq->rx_ring->tpa_info;
 235                 if (tpa_info) {
 236                         for (i = 0; i < BNXT_TPA_MAX; i++) {
 237                                 if (tpa_info[i].mbuf) {
 238                                         rte_pktmbuf_free_seg(tpa_info[i].mbuf);
 239                                         tpa_info[i].mbuf = NULL;
 240                                 }
 241                         }
 242                 }
 243         }
 244
 245         rte_spinlock_unlock(&rxq->lock);
 246 }
 247
 248 void bnxt_free_rx_mbufs(struct bnxt *bp)
 249 {
 250         struct bnxt_rx_queue *rxq;
 251         int i;
 252
 253         for (i = 0; i < (int)bp->rx_nr_rings; i++) {
 254                 rxq = bp->rx_queues[i];
 255                 bnxt_rx_queue_release_mbufs(rxq);
 256         }
 257 }
 258
 259 void bnxt_rx_queue_release_op(void *rx_queue)
 260 {
 261         struct bnxt_rx_queue *rxq = (struct bnxt_rx_queue *)rx_queue;
 262
 263         if (rxq) {
 264                 bnxt_rx_queue_release_mbufs(rxq);
 265
 266                 /* Free RX ring hardware descriptors */
 267                 bnxt_free_ring(rxq->rx_ring->rx_ring_struct);
 268                 /* Free RX Agg ring hardware descriptors */
 269                 bnxt_free_ring(rxq->rx_ring->ag_ring_struct);
 270
 271                 /* Free RX completion ring hardware descriptors */
 272                 bnxt_free_ring(rxq->cp_ring->cp_ring_struct);
 273
 274                 bnxt_free_rxq_stats(rxq);
 275                 rte_memzone_free(rxq->mz);
 276                 rxq->mz = NULL;
 277
 278                 rte_free(rxq);
 279         }
 280 }
 281
 282 int bnxt_rx_queue_setup_op(struct rte_eth_dev *eth_dev,
 283                                uint16_t queue_idx,
 284                                uint16_t nb_desc,
 285                                unsigned int socket_id,
 286                                const struct rte_eth_rxconf *rx_conf,
 287                                struct rte_mempool *mp)
 288 {
 289         struct bnxt *bp = (struct bnxt *)eth_dev->data->dev_private;
 290         uint64_t rx_offloads = eth_dev->data->dev_conf.rxmode.offloads;
 291         struct bnxt_rx_queue *rxq;
 292         int rc = 0;
 293         uint8_t queue_state;
 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 size is %d\n", rxq->rx_buf_use_size);
 326         PMD_DRV_LOG(DEBUG, "RX Buf MTU %d\n", eth_dev->data->mtu);
 327
 328         rc = bnxt_init_rx_ring_struct(rxq, socket_id);
 329         if (rc)
 330                 goto out;
 331
 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 = 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                         "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->rx_deferred_start = rx_conf->rx_deferred_start;
 352         queue_state = rxq->rx_deferred_start ? RTE_ETH_QUEUE_STATE_STOPPED :
 353                                                 RTE_ETH_QUEUE_STATE_STARTED;
 354         eth_dev->data->rx_queue_state[queue_idx] = queue_state;
 355         rte_spinlock_init(&rxq->lock);
 356 out:
 357         return rc;
 358 }
 359
 360 int
 361 bnxt_rx_queue_intr_enable_op(struct rte_eth_dev *eth_dev, uint16_t queue_id)
 362 {
 363         struct bnxt_rx_queue *rxq;
 364         struct bnxt_cp_ring_info *cpr;
 365         int rc = 0;
 366
 367         if (eth_dev->data->rx_queues) {
 368                 rxq = eth_dev->data->rx_queues[queue_id];
 369                 if (!rxq) {
 370                         rc = -EINVAL;
 371                         return rc;
 372                 }
 373                 cpr = rxq->cp_ring;
 374                 B_CP_DB_ARM(cpr);
 375         }
 376         return rc;
 377 }
 378
 379 int
 380 bnxt_rx_queue_intr_disable_op(struct rte_eth_dev *eth_dev, uint16_t queue_id)
 381 {
 382         struct bnxt_rx_queue *rxq;
 383         struct bnxt_cp_ring_info *cpr;
 384         int rc = 0;
 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_DISARM(cpr);
 394         }
 395         return rc;
 396 }
 397
 398 int bnxt_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 399 {
 400         struct bnxt *bp = (struct bnxt *)dev->data->dev_private;
 401         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 402         struct bnxt_rx_queue *rxq = bp->rx_queues[rx_queue_id];
 403         struct bnxt_vnic_info *vnic = NULL;
 404         int rc = 0;
 405
 406         if (rxq == NULL) {
 407                 PMD_DRV_LOG(ERR, "Invalid Rx queue %d\n", rx_queue_id);
 408                 return -EINVAL;
 409         }
 410
 411         dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
 412
 413         bnxt_free_hwrm_rx_ring(bp, rx_queue_id);
 414         bnxt_alloc_hwrm_rx_ring(bp, rx_queue_id);
 415         PMD_DRV_LOG(INFO, "Rx queue started %d\n", rx_queue_id);
 416
 417         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 418                 vnic = rxq->vnic;
 419
 420                 if (vnic->fw_grp_ids[rx_queue_id] != INVALID_HW_RING_ID)
 421                         return 0;
 422
 423                 PMD_DRV_LOG(DEBUG,
 424                             "vnic = %p fw_grp_id = %d\n",
 425                             vnic, bp->grp_info[rx_queue_id].fw_grp_id);
 426
 427                 vnic->fw_grp_ids[rx_queue_id] =
 428                                         bp->grp_info[rx_queue_id].fw_grp_id;
 429                 rc = bnxt_vnic_rss_configure(bp, vnic);
 430         }
 431
 432         if (rc == 0)
 433                 rxq->rx_deferred_start = false;
 434
 435         return rc;
 436 }
 437
 438 int bnxt_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 439 {
 440         struct bnxt *bp = (struct bnxt *)dev->data->dev_private;
 441         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 442         struct bnxt_vnic_info *vnic = NULL;
 443         struct bnxt_rx_queue *rxq = NULL;
 444         int rc = 0;
 445
 446         /* Rx CQ 0 also works as Default CQ for async notifications */
 447         if (!rx_queue_id) {
 448                 PMD_DRV_LOG(ERR, "Cannot stop Rx queue id %d\n", rx_queue_id);
 449                 return -EINVAL;
 450         }
 451
 452         rxq = bp->rx_queues[rx_queue_id];
 453
 454         if (rxq == NULL) {
 455                 PMD_DRV_LOG(ERR, "Invalid Rx queue %d\n", rx_queue_id);
 456                 return -EINVAL;
 457         }
 458
 459         dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 460         rxq->rx_deferred_start = true;
 461         PMD_DRV_LOG(DEBUG, "Rx queue stopped\n");
 462
 463         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 464                 vnic = rxq->vnic;
 465                 vnic->fw_grp_ids[rx_queue_id] = INVALID_HW_RING_ID;
 466                 rc = bnxt_vnic_rss_configure(bp, vnic);
 467         }
 468
 469         if (rc == 0)
 470                 bnxt_rx_queue_release_mbufs(rxq);
 471
 472         return rc;
 473 }