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         if (!rxq)
 211                 return;
 212
 213         rte_spinlock_lock(&rxq->lock);
 214
 215         sw_ring = rxq->rx_ring->rx_buf_ring;
 216         if (sw_ring) {
 217                 for (i = 0;
 218                      i < rxq->rx_ring->rx_ring_struct->ring_size; i++) {
 219                         if (sw_ring[i].mbuf) {
 220                                 rte_pktmbuf_free_seg(sw_ring[i].mbuf);
 221                                 sw_ring[i].mbuf = NULL;
 222                         }
 223                 }
 224         }
 225         /* Free up mbufs in Agg ring */
 226         sw_ring = rxq->rx_ring->ag_buf_ring;
 227         if (sw_ring) {
 228                 for (i = 0;
 229                      i < rxq->rx_ring->ag_ring_struct->ring_size; i++) {
 230                         if (sw_ring[i].mbuf) {
 231                                 rte_pktmbuf_free_seg(sw_ring[i].mbuf);
 232                                 sw_ring[i].mbuf = NULL;
 233                         }
 234                 }
 235         }
 236
 237         /* Free up mbufs in TPA */
 238         tpa_info = rxq->rx_ring->tpa_info;
 239         if (tpa_info) {
 240                 for (i = 0; i < BNXT_TPA_MAX; i++) {
 241                         if (tpa_info[i].mbuf) {
 242                                 rte_pktmbuf_free_seg(tpa_info[i].mbuf);
 243                                 tpa_info[i].mbuf = NULL;
 244                         }
 245                 }
 246         }
 247
 248         rte_spinlock_unlock(&rxq->lock);
 249 }
 250
 251 void bnxt_free_rx_mbufs(struct bnxt *bp)
 252 {
 253         struct bnxt_rx_queue *rxq;
 254         int i;
 255
 256         for (i = 0; i < (int)bp->rx_nr_rings; i++) {
 257                 rxq = bp->rx_queues[i];
 258                 bnxt_rx_queue_release_mbufs(rxq);
 259         }
 260 }
 261
 262 void bnxt_rx_queue_release_op(void *rx_queue)
 263 {
 264         struct bnxt_rx_queue *rxq = (struct bnxt_rx_queue *)rx_queue;
 265
 266         if (rxq) {
 267                 if (is_bnxt_in_error(rxq->bp))
 268                         return;
 269
 270                 bnxt_rx_queue_release_mbufs(rxq);
 271
 272                 /* Free RX ring hardware descriptors */
 273                 bnxt_free_ring(rxq->rx_ring->rx_ring_struct);
 274                 /* Free RX Agg ring hardware descriptors */
 275                 bnxt_free_ring(rxq->rx_ring->ag_ring_struct);
 276
 277                 /* Free RX completion ring hardware descriptors */
 278                 bnxt_free_ring(rxq->cp_ring->cp_ring_struct);
 279
 280                 bnxt_free_rxq_stats(rxq);
 281                 rte_memzone_free(rxq->mz);
 282                 rxq->mz = NULL;
 283
 284                 rte_free(rxq);
 285         }
 286 }
 287
 288 int bnxt_rx_queue_setup_op(struct rte_eth_dev *eth_dev,
 289                                uint16_t queue_idx,
 290                                uint16_t nb_desc,
 291                                unsigned int socket_id,
 292                                const struct rte_eth_rxconf *rx_conf,
 293                                struct rte_mempool *mp)
 294 {
 295         struct bnxt *bp = eth_dev->data->dev_private;
 296         uint64_t rx_offloads = eth_dev->data->dev_conf.rxmode.offloads;
 297         struct bnxt_rx_queue *rxq;
 298         int rc = 0;
 299         uint8_t queue_state;
 300
 301         rc = is_bnxt_in_error(bp);
 302         if (rc)
 303                 return rc;
 304
 305         if (queue_idx >= bp->max_rx_rings) {
 306                 PMD_DRV_LOG(ERR,
 307                         "Cannot create Rx ring %d. Only %d rings available\n",
 308                         queue_idx, bp->max_rx_rings);
 309                 return -EINVAL;
 310         }
 311
 312         if (!nb_desc || nb_desc > MAX_RX_DESC_CNT) {
 313                 PMD_DRV_LOG(ERR, "nb_desc %d is invalid\n", nb_desc);
 314                 rc = -EINVAL;
 315                 goto out;
 316         }
 317
 318         if (eth_dev->data->rx_queues) {
 319                 rxq = eth_dev->data->rx_queues[queue_idx];
 320                 if (rxq)
 321                         bnxt_rx_queue_release_op(rxq);
 322         }
 323         rxq = rte_zmalloc_socket("bnxt_rx_queue", sizeof(struct bnxt_rx_queue),
 324                                  RTE_CACHE_LINE_SIZE, socket_id);
 325         if (!rxq) {
 326                 PMD_DRV_LOG(ERR, "bnxt_rx_queue allocation failed!\n");
 327                 rc = -ENOMEM;
 328                 goto out;
 329         }
 330         rxq->bp = bp;
 331         rxq->mb_pool = mp;
 332         rxq->nb_rx_desc = nb_desc;
 333         rxq->rx_free_thresh = rx_conf->rx_free_thresh;
 334
 335         PMD_DRV_LOG(DEBUG, "RX Buf MTU %d\n", eth_dev->data->mtu);
 336
 337         rc = bnxt_init_rx_ring_struct(rxq, socket_id);
 338         if (rc)
 339                 goto out;
 340
 341         PMD_DRV_LOG(DEBUG, "RX Buf size is %d\n", rxq->rx_buf_size);
 342         rxq->queue_id = queue_idx;
 343         rxq->port_id = eth_dev->data->port_id;
 344         if (rx_offloads & DEV_RX_OFFLOAD_KEEP_CRC)
 345                 rxq->crc_len = RTE_ETHER_CRC_LEN;
 346         else
 347                 rxq->crc_len = 0;
 348
 349         eth_dev->data->rx_queues[queue_idx] = rxq;
 350         /* Allocate RX ring hardware descriptors */
 351         if (bnxt_alloc_rings(bp, queue_idx, NULL, rxq, rxq->cp_ring,
 352                         rxq->nq_ring, "rxr")) {
 353                 PMD_DRV_LOG(ERR,
 354                         "ring_dma_zone_reserve for rx_ring failed!\n");
 355                 bnxt_rx_queue_release_op(rxq);
 356                 rc = -ENOMEM;
 357                 goto out;
 358         }
 359         rte_atomic64_init(&rxq->rx_mbuf_alloc_fail);
 360
 361         /* rxq 0 must not be stopped when used as async CPR */
 362         if (!BNXT_NUM_ASYNC_CPR(bp) && queue_idx == 0)
 363                 rxq->rx_deferred_start = false;
 364         else
 365                 rxq->rx_deferred_start = rx_conf->rx_deferred_start;
 366
 367         if (rxq->rx_deferred_start) {
 368                 queue_state = RTE_ETH_QUEUE_STATE_STOPPED;
 369                 rxq->rx_started = false;
 370         } else {
 371                 queue_state = RTE_ETH_QUEUE_STATE_STARTED;
 372                 rxq->rx_started = true;
 373         }
 374         eth_dev->data->rx_queue_state[queue_idx] = queue_state;
 375         rte_spinlock_init(&rxq->lock);
 376
 377 out:
 378         return rc;
 379 }
 380
 381 int
 382 bnxt_rx_queue_intr_enable_op(struct rte_eth_dev *eth_dev, uint16_t queue_id)
 383 {
 384         struct bnxt *bp = eth_dev->data->dev_private;
 385         struct bnxt_rx_queue *rxq;
 386         struct bnxt_cp_ring_info *cpr;
 387         int rc = 0;
 388
 389         rc = is_bnxt_in_error(bp);
 390         if (rc)
 391                 return rc;
 392
 393         if (eth_dev->data->rx_queues) {
 394                 rxq = eth_dev->data->rx_queues[queue_id];
 395                 if (!rxq) {
 396                         rc = -EINVAL;
 397                         return rc;
 398                 }
 399                 cpr = rxq->cp_ring;
 400                 B_CP_DB_REARM(cpr, cpr->cp_raw_cons);
 401         }
 402         return rc;
 403 }
 404
 405 int
 406 bnxt_rx_queue_intr_disable_op(struct rte_eth_dev *eth_dev, uint16_t queue_id)
 407 {
 408         struct bnxt *bp = eth_dev->data->dev_private;
 409         struct bnxt_rx_queue *rxq;
 410         struct bnxt_cp_ring_info *cpr;
 411         int rc = 0;
 412
 413         rc = is_bnxt_in_error(bp);
 414         if (rc)
 415                 return rc;
 416
 417         if (eth_dev->data->rx_queues) {
 418                 rxq = eth_dev->data->rx_queues[queue_id];
 419                 if (!rxq) {
 420                         rc = -EINVAL;
 421                         return rc;
 422                 }
 423                 cpr = rxq->cp_ring;
 424                 B_CP_DB_DISARM(cpr);
 425         }
 426         return rc;
 427 }
 428
 429 int bnxt_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 430 {
 431         struct bnxt *bp = dev->data->dev_private;
 432         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 433         struct bnxt_rx_queue *rxq = bp->rx_queues[rx_queue_id];
 434         struct bnxt_vnic_info *vnic = NULL;
 435         int rc = 0;
 436
 437         rc = is_bnxt_in_error(bp);
 438         if (rc)
 439                 return rc;
 440
 441         if (rxq == NULL) {
 442                 PMD_DRV_LOG(ERR, "Invalid Rx queue %d\n", rx_queue_id);
 443                 return -EINVAL;
 444         }
 445
 446         /* Set the queue state to started here.
 447          * We check the status of the queue while posting buffer.
 448          * If queue is it started, we do not post buffers for Rx.
 449          */
 450         rxq->rx_started = true;
 451         bnxt_free_hwrm_rx_ring(bp, rx_queue_id);
 452         rc = bnxt_alloc_hwrm_rx_ring(bp, rx_queue_id);
 453         if (rc)
 454                 return rc;
 455
 456         PMD_DRV_LOG(INFO, "Rx queue started %d\n", rx_queue_id);
 457
 458         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 459                 vnic = rxq->vnic;
 460
 461                 if (BNXT_HAS_RING_GRPS(bp)) {
 462                         if (vnic->fw_grp_ids[rx_queue_id] != INVALID_HW_RING_ID)
 463                                 return 0;
 464
 465                         vnic->fw_grp_ids[rx_queue_id] =
 466                                         bp->grp_info[rx_queue_id].fw_grp_id;
 467                         PMD_DRV_LOG(DEBUG,
 468                                     "vnic = %p fw_grp_id = %d\n",
 469                                     vnic, bp->grp_info[rx_queue_id].fw_grp_id);
 470                 }
 471
 472                 rc = bnxt_vnic_rss_configure(bp, vnic);
 473         }
 474
 475         if (rc == 0)
 476                 dev->data->rx_queue_state[rx_queue_id] =
 477                                 RTE_ETH_QUEUE_STATE_STARTED;
 478         else
 479                 rxq->rx_started = false;
 480
 481         PMD_DRV_LOG(INFO,
 482                     "queue %d, rx_deferred_start %d, state %d!\n",
 483                     rx_queue_id, rxq->rx_deferred_start,
 484                     bp->eth_dev->data->rx_queue_state[rx_queue_id]);
 485
 486         return rc;
 487 }
 488
 489 int bnxt_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 490 {
 491         struct bnxt *bp = dev->data->dev_private;
 492         struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 493         struct bnxt_vnic_info *vnic = NULL;
 494         struct bnxt_rx_queue *rxq = NULL;
 495         int rc = 0;
 496
 497         rc = is_bnxt_in_error(bp);
 498         if (rc)
 499                 return rc;
 500
 501         /* For the stingray platform and other platforms needing tighter
 502          * control of resource utilization, Rx CQ 0 also works as
 503          * Default CQ for async notifications
 504          */
 505         if (!BNXT_NUM_ASYNC_CPR(bp) && !rx_queue_id) {
 506                 PMD_DRV_LOG(ERR, "Cannot stop Rx queue id %d\n", rx_queue_id);
 507                 return -EINVAL;
 508         }
 509
 510         rxq = bp->rx_queues[rx_queue_id];
 511
 512         if (rxq == NULL) {
 513                 PMD_DRV_LOG(ERR, "Invalid Rx queue %d\n", rx_queue_id);
 514                 return -EINVAL;
 515         }
 516
 517         dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
 518         rxq->rx_started = false;
 519         PMD_DRV_LOG(DEBUG, "Rx queue stopped\n");
 520
 521         if (dev_conf->rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) {
 522                 vnic = rxq->vnic;
 523                 if (BNXT_HAS_RING_GRPS(bp))
 524                         vnic->fw_grp_ids[rx_queue_id] = INVALID_HW_RING_ID;
 525                 rc = bnxt_vnic_rss_configure(bp, vnic);
 526         }
 527
 528         if (rc == 0)
 529                 bnxt_rx_queue_release_mbufs(rxq);
 530
 531         return rc;
 532 }