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_filter.h"
  12 #include "bnxt_hwrm.h"
  13 #include "bnxt_ring.h"
  14 #include "bnxt_rxq.h"
  15 #include "bnxt_rxr.h"
  16 #include "bnxt_vnic.h"
  17 #include "hsi_struct_def_dpdk.h"
  18
  19 /*
  20  * RX Queues
  21  */
  22
  23 void bnxt_free_rxq_stats(struct bnxt_rx_queue *rxq)
  24 {
  25         if (rxq && rxq->cp_ring && rxq->cp_ring->hw_stats)
  26                 rxq->cp_ring->hw_stats = NULL;
  27 }
  28
  29 int bnxt_mq_rx_configure(struct bnxt *bp)
  30 {
  31         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
  32         const struct rte_eth_vmdq_rx_conf *conf =
  33                     &dev_conf->rx_adv_conf.vmdq_rx_conf;
  34         unsigned int i, j, nb_q_per_grp = 1, ring_idx = 0;
  35         int start_grp_id, end_grp_id = 1, rc = 0;
  36         struct bnxt_vnic_info *vnic;
  37         struct bnxt_filter_info *filter;
  38         enum rte_eth_nb_pools pools = bp->rx_cp_nr_rings, max_pools = 0;
  39         struct bnxt_rx_queue *rxq;
  40
  41         bp->nr_vnics = 0;
  42
  43         /* Single queue mode */
  44         if (bp->rx_cp_nr_rings < 2) {
  45                 vnic = &bp->vnic_info[0];
  46                 if (!vnic) {
  47                         PMD_DRV_LOG(ERR, "VNIC alloc failed\n");
  48                         rc = -ENOMEM;
  49                         goto err_out;
  50                 }
  51                 vnic->flags |= BNXT_VNIC_INFO_BCAST;
  52                 bp->nr_vnics++;
  53
  54                 rxq = bp->eth_dev->data->rx_queues[0];
  55                 rxq->vnic = vnic;
  56
  57                 vnic->func_default = true;
  58                 vnic->start_grp_id = 0;
  59                 vnic->end_grp_id = vnic->start_grp_id;
  60                 filter = bnxt_alloc_filter(bp);
  61                 if (!filter) {
  62                         PMD_DRV_LOG(ERR, "L2 filter alloc failed\n");
  63                         rc = -ENOMEM;
  64                         goto err_out;
  65                 }
  66                 filter->flags |= HWRM_CFA_L2_FILTER_ALLOC_INPUT_FLAGS_OUTERMOST;
  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                 case ETH_MQ_RX_VMDQ_DCB_RSS:
  79                         /* FALLTHROUGH */
  80                         /* ETH_8/64_POOLs */
  81                         pools = conf->nb_queue_pools;
  82                         /* For each pool, allocate MACVLAN CFA rule & VNIC */
  83                         max_pools = RTE_MIN(bp->max_vnics,
  84                                             RTE_MIN(bp->max_l2_ctx,
  85                                             RTE_MIN(bp->max_rsscos_ctx,
  86                                                     ETH_64_POOLS)));
  87                         PMD_DRV_LOG(DEBUG,
  88                                     "pools = %u max_pools = %u\n",
  89                                     pools, max_pools);
  90                         if (pools > max_pools)
  91                                 pools = max_pools;
  92                         break;
  93                 case ETH_MQ_RX_RSS:
  94                         pools = bp->rx_cosq_cnt ? bp->rx_cosq_cnt : 1;
  95                         break;
  96                 default:
  97                         PMD_DRV_LOG(ERR, "Unsupported mq_mod %d\n",
  98                                 dev_conf->rxmode.mq_mode);
  99                         rc = -EINVAL;
 100                         goto err_out;
 101                 }
 102         }
 103         nb_q_per_grp = bp->rx_cp_nr_rings / pools;
 104         bp->rx_num_qs_per_vnic = nb_q_per_grp;
 105         PMD_DRV_LOG(DEBUG, "pools = %u nb_q_per_grp = %u\n",
 106                     pools, nb_q_per_grp);
 107         start_grp_id = 0;
 108         end_grp_id = nb_q_per_grp;
 109
 110         for (i = 0; i < pools; i++) {
 111                 vnic = &bp->vnic_info[i];
 112                 if (!vnic) {
 113                         PMD_DRV_LOG(ERR, "VNIC alloc failed\n");
 114                         rc = -ENOMEM;
 115                         goto err_out;
 116                 }
 117                 vnic->flags |= BNXT_VNIC_INFO_BCAST;
 118                 bp->nr_vnics++;
 119
 120                 for (j = 0; j < nb_q_per_grp; j++, ring_idx++) {
 121                         rxq = bp->eth_dev->data->rx_queues[ring_idx];
 122                         rxq->vnic = vnic;
 123                         PMD_DRV_LOG(DEBUG,
 124                                     "rxq[%d] = %p vnic[%d] = %p\n",
 125                                     ring_idx, rxq, i, vnic);
 126                 }
 127                 if (i == 0) {
 128                         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_VMDQ_DCB) {
 129                                 bp->eth_dev->data->promiscuous = 1;
 130                                 vnic->flags |= BNXT_VNIC_INFO_PROMISC;
 131                         }
 132                         vnic->func_default = true;
 133                 }
 134                 vnic->start_grp_id = start_grp_id;
 135                 vnic->end_grp_id = end_grp_id;
 136
 137                 if (i) {
 138                         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_VMDQ_DCB ||
 139                             !(dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS))
 140                                 vnic->rss_dflt_cr = true;
 141                         goto skip_filter_allocation;
 142                 }
 143                 filter = bnxt_alloc_filter(bp);
 144                 if (!filter) {
 145                         PMD_DRV_LOG(ERR, "L2 filter alloc failed\n");
 146                         rc = -ENOMEM;
 147                         goto err_out;
 148                 }
 149                 filter->flags |= HWRM_CFA_L2_FILTER_ALLOC_INPUT_FLAGS_OUTERMOST;
 150                 /*
 151                  * TODO: Configure & associate CFA rule for
 152                  * each VNIC for each VMDq with MACVLAN, MACVLAN+TC
 153                  */
 154                 STAILQ_INSERT_TAIL(&vnic->filter, filter, next);
 155
 156 skip_filter_allocation:
 157                 start_grp_id = end_grp_id;
 158                 end_grp_id += nb_q_per_grp;
 159         }
 160
 161 out:
 162         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 163                 struct rte_eth_rss_conf *rss = &dev_conf->rx_adv_conf.rss_conf;
 164
 165                 if (bp->flags & BNXT_FLAG_UPDATE_HASH) {
 166                         rss = &bp->rss_conf;
 167                         bp->flags &= ~BNXT_FLAG_UPDATE_HASH;
 168                 }
 169
 170                 for (i = 0; i < bp->nr_vnics; i++) {
 171                         vnic = &bp->vnic_info[i];
 172                         vnic->hash_type =
 173                                 bnxt_rte_to_hwrm_hash_types(rss->rss_hf);
 174
 175                         /*
 176                          * Use the supplied key if the key length is
 177                          * acceptable and the rss_key is not NULL
 178                          */
 179                         if (rss->rss_key &&
 180                             rss->rss_key_len <= HW_HASH_KEY_SIZE)
 181                                 memcpy(vnic->rss_hash_key,
 182                                        rss->rss_key, rss->rss_key_len);
 183                 }
 184         }
 185
 186         return rc;
 187
 188 err_out:
 189         /* Free allocated vnic/filters */
 190
 191         return rc;
 192 }
 193
 194 void bnxt_rx_queue_release_mbufs(struct bnxt_rx_queue *rxq)
 195 {
 196         struct bnxt_sw_rx_bd *sw_ring;
 197         struct bnxt_tpa_info *tpa_info;
 198         uint16_t i;
 199
 200         if (!rxq)
 201                 return;
 202
 203         rte_spinlock_lock(&rxq->lock);
 204
 205         sw_ring = rxq->rx_ring->rx_buf_ring;
 206         if (sw_ring) {
 207                 for (i = 0;
 208                      i < rxq->rx_ring->rx_ring_struct->ring_size; i++) {
 209                         if (sw_ring[i].mbuf) {
 210                                 rte_pktmbuf_free_seg(sw_ring[i].mbuf);
 211                                 sw_ring[i].mbuf = NULL;
 212                         }
 213                 }
 214         }
 215         /* Free up mbufs in Agg ring */
 216         sw_ring = rxq->rx_ring->ag_buf_ring;
 217         if (sw_ring) {
 218                 for (i = 0;
 219                      i < rxq->rx_ring->ag_ring_struct->ring_size; i++) {
 220                         if (sw_ring[i].mbuf) {
 221                                 rte_pktmbuf_free_seg(sw_ring[i].mbuf);
 222                                 sw_ring[i].mbuf = NULL;
 223                         }
 224                 }
 225         }
 226
 227         /* Free up mbufs in TPA */
 228         tpa_info = rxq->rx_ring->tpa_info;
 229         if (tpa_info) {
 230                 int max_aggs = BNXT_TPA_MAX_AGGS(rxq->bp);
 231
 232                 for (i = 0; i < max_aggs; i++) {
 233                         if (tpa_info[i].mbuf) {
 234                                 rte_pktmbuf_free_seg(tpa_info[i].mbuf);
 235                                 tpa_info[i].mbuf = NULL;
 236                         }
 237                 }
 238         }
 239
 240         rte_spinlock_unlock(&rxq->lock);
 241 }
 242
 243 void bnxt_free_rx_mbufs(struct bnxt *bp)
 244 {
 245         struct bnxt_rx_queue *rxq;
 246         int i;
 247
 248         for (i = 0; i < (int)bp->rx_nr_rings; i++) {
 249                 rxq = bp->rx_queues[i];
 250                 bnxt_rx_queue_release_mbufs(rxq);
 251         }
 252 }
 253
 254 void bnxt_rx_queue_release_op(void *rx_queue)
 255 {
 256         struct bnxt_rx_queue *rxq = (struct bnxt_rx_queue *)rx_queue;
 257
 258         if (rxq) {
 259                 if (is_bnxt_in_error(rxq->bp))
 260                         return;
 261
 262                 bnxt_rx_queue_release_mbufs(rxq);
 263
 264                 /* Free RX ring hardware descriptors */
 265                 bnxt_free_ring(rxq->rx_ring->rx_ring_struct);
 266                 /* Free RX Agg ring hardware descriptors */
 267                 bnxt_free_ring(rxq->rx_ring->ag_ring_struct);
 268
 269                 /* Free RX completion ring hardware descriptors */
 270                 bnxt_free_ring(rxq->cp_ring->cp_ring_struct);
 271
 272                 bnxt_free_rxq_stats(rxq);
 273                 rte_memzone_free(rxq->mz);
 274                 rxq->mz = NULL;
 275
 276                 rte_free(rxq);
 277         }
 278 }
 279
 280 int bnxt_rx_queue_setup_op(struct rte_eth_dev *eth_dev,
 281                                uint16_t queue_idx,
 282                                uint16_t nb_desc,
 283                                unsigned int socket_id,
 284                                const struct rte_eth_rxconf *rx_conf,
 285                                struct rte_mempool *mp)
 286 {
 287         struct bnxt *bp = eth_dev->data->dev_private;
 288         uint64_t rx_offloads = eth_dev->data->dev_conf.rxmode.offloads;
 289         struct bnxt_rx_queue *rxq;
 290         int rc = 0;
 291         uint8_t queue_state;
 292
 293         rc = is_bnxt_in_error(bp);
 294         if (rc)
 295                 return rc;
 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 MTU %d\n", eth_dev->data->mtu);
 328
 329         rc = bnxt_init_rx_ring_struct(rxq, socket_id);
 330         if (rc)
 331                 goto out;
 332
 333         PMD_DRV_LOG(DEBUG, "RX Buf size is %d\n", rxq->rx_buf_size);
 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, NULL,
 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 0 must not be stopped when used as async CPR */
 354         if (!BNXT_NUM_ASYNC_CPR(bp) && queue_idx == 0)
 355                 rxq->rx_deferred_start = false;
 356         else
 357                 rxq->rx_deferred_start = rx_conf->rx_deferred_start;
 358
 359         if (rxq->rx_deferred_start) {
 360                 queue_state = RTE_ETH_QUEUE_STATE_STOPPED;
 361                 rxq->rx_started = false;
 362         } else {
 363                 queue_state = RTE_ETH_QUEUE_STATE_STARTED;
 364                 rxq->rx_started = true;
 365         }
 366         eth_dev->data->rx_queue_state[queue_idx] = queue_state;
 367         rte_spinlock_init(&rxq->lock);
 368
 369 out:
 370         return rc;
 371 }
 372
 373 int
 374 bnxt_rx_queue_intr_enable_op(struct rte_eth_dev *eth_dev, uint16_t queue_id)
 375 {
 376         struct bnxt *bp = eth_dev->data->dev_private;
 377         struct bnxt_rx_queue *rxq;
 378         struct bnxt_cp_ring_info *cpr;
 379         int rc = 0;
 380
 381         rc = is_bnxt_in_error(bp);
 382         if (rc)
 383                 return rc;
 384
 385         if (eth_dev->data->rx_queues) {
 386                 rxq = eth_dev->data->rx_queues[queue_id];
 387                 if (!rxq) {
 388                         rc = -EINVAL;
 389                         return rc;
 390                 }
 391                 cpr = rxq->cp_ring;
 392                 B_CP_DB_REARM(cpr, cpr->cp_raw_cons);
 393         }
 394         return rc;
 395 }
 396
 397 int
 398 bnxt_rx_queue_intr_disable_op(struct rte_eth_dev *eth_dev, uint16_t queue_id)
 399 {
 400         struct bnxt *bp = eth_dev->data->dev_private;
 401         struct bnxt_rx_queue *rxq;
 402         struct bnxt_cp_ring_info *cpr;
 403         int rc = 0;
 404
 405         rc = is_bnxt_in_error(bp);
 406         if (rc)
 407                 return rc;
 408
 409         if (eth_dev->data->rx_queues) {
 410                 rxq = eth_dev->data->rx_queues[queue_id];
 411                 if (!rxq) {
 412                         rc = -EINVAL;
 413                         return rc;
 414                 }
 415                 cpr = rxq->cp_ring;
 416                 B_CP_DB_DISARM(cpr);
 417         }
 418         return rc;
 419 }
 420
 421 int bnxt_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 422 {
 423         struct bnxt *bp = dev->data->dev_private;
 424         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 425         struct bnxt_rx_queue *rxq = bp->rx_queues[rx_queue_id];
 426         struct bnxt_vnic_info *vnic = NULL;
 427         int rc = 0;
 428
 429         rc = is_bnxt_in_error(bp);
 430         if (rc)
 431                 return rc;
 432
 433         if (rxq == NULL) {
 434                 PMD_DRV_LOG(ERR, "Invalid Rx queue %d\n", rx_queue_id);
 435                 return -EINVAL;
 436         }
 437
 438         /* Set the queue state to started here.
 439          * We check the status of the queue while posting buffer.
 440          * If queue is it started, we do not post buffers for Rx.
 441          */
 442         rxq->rx_started = true;
 443         bnxt_free_hwrm_rx_ring(bp, rx_queue_id);
 444         rc = bnxt_alloc_hwrm_rx_ring(bp, rx_queue_id);
 445         if (rc)
 446                 return rc;
 447
 448         PMD_DRV_LOG(INFO, "Rx queue started %d\n", rx_queue_id);
 449
 450         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 451                 vnic = rxq->vnic;
 452
 453                 if (BNXT_HAS_RING_GRPS(bp)) {
 454                         if (vnic->fw_grp_ids[rx_queue_id] != INVALID_HW_RING_ID)
 455                                 return 0;
 456
 457                         vnic->fw_grp_ids[rx_queue_id] =
 458                                         bp->grp_info[rx_queue_id].fw_grp_id;
 459                         PMD_DRV_LOG(DEBUG,
 460                                     "vnic = %p fw_grp_id = %d\n",
 461                                     vnic, bp->grp_info[rx_queue_id].fw_grp_id);
 462                 }
 463
 464                 PMD_DRV_LOG(DEBUG, "Rx Queue Count %d\n", vnic->rx_queue_cnt);
 465                 if (vnic->rx_queue_cnt > 1)
 466                         rc = bnxt_vnic_rss_configure(bp, vnic);
 467         }
 468
 469         if (rc == 0)
 470                 dev->data->rx_queue_state[rx_queue_id] =
 471                                 RTE_ETH_QUEUE_STATE_STARTED;
 472         else
 473                 rxq->rx_started = false;
 474
 475         PMD_DRV_LOG(INFO,
 476                     "queue %d, rx_deferred_start %d, state %d!\n",
 477                     rx_queue_id, rxq->rx_deferred_start,
 478                     bp->eth_dev->data->rx_queue_state[rx_queue_id]);
 479
 480         return rc;
 481 }
 482
 483 int bnxt_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 484 {
 485         struct bnxt *bp = dev->data->dev_private;
 486         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 487         struct bnxt_vnic_info *vnic = NULL;
 488         struct bnxt_rx_queue *rxq = NULL;
 489         int rc = 0;
 490
 491         rc = is_bnxt_in_error(bp);
 492         if (rc)
 493                 return rc;
 494
 495         /* For the stingray platform and other platforms needing tighter
 496          * control of resource utilization, Rx CQ 0 also works as
 497          * Default CQ for async notifications
 498          */
 499         if (!BNXT_NUM_ASYNC_CPR(bp) && !rx_queue_id) {
 500                 PMD_DRV_LOG(ERR, "Cannot stop Rx queue id %d\n", rx_queue_id);
 501                 return -EINVAL;
 502         }
 503
 504         rxq = bp->rx_queues[rx_queue_id];
 505
 506         if (rxq == NULL) {
 507                 PMD_DRV_LOG(ERR, "Invalid Rx queue %d\n", rx_queue_id);
 508                 return -EINVAL;
 509         }
 510
 511         dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 512         rxq->rx_started = false;
 513         PMD_DRV_LOG(DEBUG, "Rx queue stopped\n");
 514
 515         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 516                 vnic = rxq->vnic;
 517                 if (BNXT_HAS_RING_GRPS(bp))
 518                         vnic->fw_grp_ids[rx_queue_id] = INVALID_HW_RING_ID;
 519
 520                 PMD_DRV_LOG(DEBUG, "Rx Queue Count %d\n", vnic->rx_queue_cnt);
 521                 if (vnic->rx_queue_cnt > 1)
 522                         rc = bnxt_vnic_rss_configure(bp, vnic);
 523         }
 524
 525         if (rc == 0)
 526                 bnxt_rx_queue_release_mbufs(rxq);
 527
 528         return rc;
 529 }