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                 bnxt_rx_queue_release_mbufs(rxq);
 267
 268                 /* Free RX ring hardware descriptors */
 269                 bnxt_free_ring(rxq->rx_ring->rx_ring_struct);
 270                 /* Free RX Agg ring hardware descriptors */
 271                 bnxt_free_ring(rxq->rx_ring->ag_ring_struct);
 272
 273                 /* Free RX completion ring hardware descriptors */
 274                 bnxt_free_ring(rxq->cp_ring->cp_ring_struct);
 275
 276                 bnxt_free_rxq_stats(rxq);
 277                 rte_memzone_free(rxq->mz);
 278                 rxq->mz = NULL;
 279
 280                 rte_free(rxq);
 281         }
 282 }
 283
 284 int bnxt_rx_queue_setup_op(struct rte_eth_dev *eth_dev,
 285                                uint16_t queue_idx,
 286                                uint16_t nb_desc,
 287                                unsigned int socket_id,
 288                                const struct rte_eth_rxconf *rx_conf,
 289                                struct rte_mempool *mp)
 290 {
 291         struct bnxt *bp = (struct bnxt *)eth_dev->data->dev_private;
 292         uint64_t rx_offloads = eth_dev->data->dev_conf.rxmode.offloads;
 293         struct bnxt_rx_queue *rxq;
 294         int rc = 0;
 295         uint8_t queue_state;
 296
 297         if (queue_idx >= bp->max_rx_rings) {
 298                 PMD_DRV_LOG(ERR,
 299                         "Cannot create Rx ring %d. Only %d rings available\n",
 300                         queue_idx, bp->max_rx_rings);
 301                 return -EINVAL;
 302         }
 303
 304         if (!nb_desc || nb_desc > MAX_RX_DESC_CNT) {
 305                 PMD_DRV_LOG(ERR, "nb_desc %d is invalid\n", nb_desc);
 306                 rc = -EINVAL;
 307                 goto out;
 308         }
 309
 310         if (eth_dev->data->rx_queues) {
 311                 rxq = eth_dev->data->rx_queues[queue_idx];
 312                 if (rxq)
 313                         bnxt_rx_queue_release_op(rxq);
 314         }
 315         rxq = rte_zmalloc_socket("bnxt_rx_queue", sizeof(struct bnxt_rx_queue),
 316                                  RTE_CACHE_LINE_SIZE, socket_id);
 317         if (!rxq) {
 318                 PMD_DRV_LOG(ERR, "bnxt_rx_queue allocation failed!\n");
 319                 rc = -ENOMEM;
 320                 goto out;
 321         }
 322         rxq->bp = bp;
 323         rxq->mb_pool = mp;
 324         rxq->nb_rx_desc = nb_desc;
 325         rxq->rx_free_thresh = rx_conf->rx_free_thresh;
 326
 327         PMD_DRV_LOG(DEBUG, "RX Buf size is %d\n", rxq->rx_buf_use_size);
 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         rxq->queue_id = queue_idx;
 335         rxq->port_id = eth_dev->data->port_id;
 336         if (rx_offloads & DEV_RX_OFFLOAD_KEEP_CRC)
 337                 rxq->crc_len = RTE_ETHER_CRC_LEN;
 338         else
 339                 rxq->crc_len = 0;
 340
 341         eth_dev->data->rx_queues[queue_idx] = rxq;
 342         /* Allocate RX ring hardware descriptors */
 343         if (bnxt_alloc_rings(bp, queue_idx, NULL, rxq, rxq->cp_ring,
 344                         "rxr")) {
 345                 PMD_DRV_LOG(ERR,
 346                         "ring_dma_zone_reserve for rx_ring failed!\n");
 347                 bnxt_rx_queue_release_op(rxq);
 348                 rc = -ENOMEM;
 349                 goto out;
 350         }
 351         rte_atomic64_init(&rxq->rx_mbuf_alloc_fail);
 352
 353         rxq->rx_deferred_start = rx_conf->rx_deferred_start;
 354         queue_state = rxq->rx_deferred_start ? RTE_ETH_QUEUE_STATE_STOPPED :
 355                                                 RTE_ETH_QUEUE_STATE_STARTED;
 356         eth_dev->data->rx_queue_state[queue_idx] = queue_state;
 357         rte_spinlock_init(&rxq->lock);
 358 out:
 359         return rc;
 360 }
 361
 362 int
 363 bnxt_rx_queue_intr_enable_op(struct rte_eth_dev *eth_dev, uint16_t queue_id)
 364 {
 365         struct bnxt_rx_queue *rxq;
 366         struct bnxt_cp_ring_info *cpr;
 367         int rc = 0;
 368
 369         if (eth_dev->data->rx_queues) {
 370                 rxq = eth_dev->data->rx_queues[queue_id];
 371                 if (!rxq) {
 372                         rc = -EINVAL;
 373                         return rc;
 374                 }
 375                 cpr = rxq->cp_ring;
 376                 B_CP_DB_ARM(cpr);
 377         }
 378         return rc;
 379 }
 380
 381 int
 382 bnxt_rx_queue_intr_disable_op(struct rte_eth_dev *eth_dev, uint16_t queue_id)
 383 {
 384         struct bnxt_rx_queue *rxq;
 385         struct bnxt_cp_ring_info *cpr;
 386         int rc = 0;
 387
 388         if (eth_dev->data->rx_queues) {
 389                 rxq = eth_dev->data->rx_queues[queue_id];
 390                 if (!rxq) {
 391                         rc = -EINVAL;
 392                         return rc;
 393                 }
 394                 cpr = rxq->cp_ring;
 395                 B_CP_DB_DISARM(cpr);
 396         }
 397         return rc;
 398 }
 399
 400 int bnxt_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 401 {
 402         struct bnxt *bp = (struct bnxt *)dev->data->dev_private;
 403         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 404         struct bnxt_rx_queue *rxq = bp->rx_queues[rx_queue_id];
 405         struct bnxt_vnic_info *vnic = NULL;
 406         int rc = 0;
 407
 408         if (rxq == NULL) {
 409                 PMD_DRV_LOG(ERR, "Invalid Rx queue %d\n", rx_queue_id);
 410                 return -EINVAL;
 411         }
 412
 413         dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
 414
 415         bnxt_free_hwrm_rx_ring(bp, rx_queue_id);
 416         bnxt_alloc_hwrm_rx_ring(bp, rx_queue_id);
 417         PMD_DRV_LOG(INFO, "Rx queue started %d\n", rx_queue_id);
 418
 419         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 420                 vnic = rxq->vnic;
 421
 422                 if (vnic->fw_grp_ids[rx_queue_id] != INVALID_HW_RING_ID)
 423                         return 0;
 424
 425                 PMD_DRV_LOG(DEBUG,
 426                             "vnic = %p fw_grp_id = %d\n",
 427                             vnic, bp->grp_info[rx_queue_id].fw_grp_id);
 428
 429                 vnic->fw_grp_ids[rx_queue_id] =
 430                                         bp->grp_info[rx_queue_id].fw_grp_id;
 431                 rc = bnxt_vnic_rss_configure(bp, vnic);
 432         }
 433
 434         if (rc == 0)
 435                 rxq->rx_deferred_start = false;
 436
 437         return rc;
 438 }
 439
 440 int bnxt_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 441 {
 442         struct bnxt *bp = (struct bnxt *)dev->data->dev_private;
 443         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 444         struct bnxt_vnic_info *vnic = NULL;
 445         struct bnxt_rx_queue *rxq = NULL;
 446         int rc = 0;
 447
 448         /* Rx CQ 0 also works as Default CQ for async notifications */
 449         if (!rx_queue_id) {
 450                 PMD_DRV_LOG(ERR, "Cannot stop Rx queue id %d\n", rx_queue_id);
 451                 return -EINVAL;
 452         }
 453
 454         rxq = bp->rx_queues[rx_queue_id];
 455
 456         if (rxq == NULL) {
 457                 PMD_DRV_LOG(ERR, "Invalid Rx queue %d\n", rx_queue_id);
 458                 return -EINVAL;
 459         }
 460
 461         dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 462         rxq->rx_deferred_start = true;
 463         PMD_DRV_LOG(DEBUG, "Rx queue stopped\n");
 464
 465         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 466                 vnic = rxq->vnic;
 467                 vnic->fw_grp_ids[rx_queue_id] = INVALID_HW_RING_ID;
 468                 rc = bnxt_vnic_rss_configure(bp, vnic);
 469         }
 470
 471         if (rc == 0)
 472                 bnxt_rx_queue_release_mbufs(rxq);
 473
 474         return rc;
 475 }