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