drivers/net/bnxt/bnxt_rxr.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) Broadcom Limited.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Broadcom Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <inttypes.h>
  35 #include <stdbool.h>
  36
  37 #include <rte_bitmap.h>
  38 #include <rte_byteorder.h>
  39 #include <rte_malloc.h>
  40 #include <rte_memory.h>
  41
  42 #include "bnxt.h"
  43 #include "bnxt_cpr.h"
  44 #include "bnxt_ring.h"
  45 #include "bnxt_rxr.h"
  46 #include "bnxt_rxq.h"
  47 #include "hsi_struct_def_dpdk.h"
  48
  49 /*
  50  * RX Ring handling
  51  */
  52
  53 static inline struct rte_mbuf *__bnxt_alloc_rx_data(struct rte_mempool *mb)
  54 {
  55         struct rte_mbuf *data;
  56
  57         data = rte_mbuf_raw_alloc(mb);
  58
  59         return data;
  60 }
  61
  62 static inline int bnxt_alloc_rx_data(struct bnxt_rx_queue *rxq,
  63                                      struct bnxt_rx_ring_info *rxr,
  64                                      uint16_t prod)
  65 {
  66         struct rx_prod_pkt_bd *rxbd = &rxr->rx_desc_ring[prod];
  67         struct bnxt_sw_rx_bd *rx_buf = &rxr->rx_buf_ring[prod];
  68         struct rte_mbuf *data;
  69
  70         data = __bnxt_alloc_rx_data(rxq->mb_pool);
  71         if (!data) {
  72                 rte_atomic64_inc(&rxq->bp->rx_mbuf_alloc_fail);
  73                 return -ENOMEM;
  74         }
  75
  76         rx_buf->mbuf = data;
  77
  78         rxbd->addr = rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR(rx_buf->mbuf));
  79
  80         return 0;
  81 }
  82
  83 static inline int bnxt_alloc_ag_data(struct bnxt_rx_queue *rxq,
  84                                      struct bnxt_rx_ring_info *rxr,
  85                                      uint16_t prod)
  86 {
  87         struct rx_prod_pkt_bd *rxbd = &rxr->ag_desc_ring[prod];
  88         struct bnxt_sw_rx_bd *rx_buf = &rxr->ag_buf_ring[prod];
  89         struct rte_mbuf *data;
  90
  91         data = __bnxt_alloc_rx_data(rxq->mb_pool);
  92         if (!data) {
  93                 rte_atomic64_inc(&rxq->bp->rx_mbuf_alloc_fail);
  94                 return -ENOMEM;
  95         }
  96
  97         if (rxbd == NULL)
  98                 RTE_LOG(ERR, PMD, "Jumbo Frame. rxbd is NULL\n");
  99         if (rx_buf == NULL)
 100                 RTE_LOG(ERR, PMD, "Jumbo Frame. rx_buf is NULL\n");
 101
 102
 103         rx_buf->mbuf = data;
 104
 105         rxbd->addr = rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR(rx_buf->mbuf));
 106
 107         return 0;
 108 }
 109
 110 static inline void bnxt_reuse_rx_mbuf(struct bnxt_rx_ring_info *rxr,
 111                                struct rte_mbuf *mbuf)
 112 {
 113         uint16_t prod = RING_NEXT(rxr->rx_ring_struct, rxr->rx_prod);
 114         struct bnxt_sw_rx_bd *prod_rx_buf;
 115         struct rx_prod_pkt_bd *prod_bd;
 116
 117         prod_rx_buf = &rxr->rx_buf_ring[prod];
 118
 119         RTE_ASSERT(prod_rx_buf->mbuf == NULL);
 120         RTE_ASSERT(mbuf != NULL);
 121
 122         prod_rx_buf->mbuf = mbuf;
 123
 124         prod_bd = &rxr->rx_desc_ring[prod];
 125
 126         prod_bd->addr = rte_cpu_to_le_64(RTE_MBUF_DATA_DMA_ADDR(mbuf));
 127
 128         rxr->rx_prod = prod;
 129 }
 130
 131 #ifdef BNXT_DEBUG
 132 static void bnxt_reuse_ag_mbuf(struct bnxt_rx_ring_info *rxr, uint16_t cons,
 133                                struct rte_mbuf *mbuf)
 134 {
 135         uint16_t prod = rxr->ag_prod;
 136         struct bnxt_sw_rx_bd *prod_rx_buf;
 137         struct rx_prod_pkt_bd *prod_bd, *cons_bd;
 138
 139         prod_rx_buf = &rxr->ag_buf_ring[prod];
 140
 141         prod_rx_buf->mbuf = mbuf;
 142
 143         prod_bd = &rxr->ag_desc_ring[prod];
 144         cons_bd = &rxr->ag_desc_ring[cons];
 145
 146         prod_bd->addr = cons_bd->addr;
 147 }
 148 #endif
 149
 150 static inline
 151 struct rte_mbuf *bnxt_consume_rx_buf(struct bnxt_rx_ring_info *rxr,
 152                                      uint16_t cons)
 153 {
 154         struct bnxt_sw_rx_bd *cons_rx_buf;
 155         struct rte_mbuf *mbuf;
 156
 157         cons_rx_buf = &rxr->rx_buf_ring[cons];
 158         RTE_ASSERT(cons_rx_buf->mbuf != NULL);
 159         mbuf = cons_rx_buf->mbuf;
 160         cons_rx_buf->mbuf = NULL;
 161         return mbuf;
 162 }
 163
 164 static void bnxt_tpa_start(struct bnxt_rx_queue *rxq,
 165                            struct rx_tpa_start_cmpl *tpa_start,
 166                            struct rx_tpa_start_cmpl_hi *tpa_start1)
 167 {
 168         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 169         uint8_t agg_id = rte_le_to_cpu_32(tpa_start->agg_id &
 170                 RX_TPA_START_CMPL_AGG_ID_MASK) >> RX_TPA_START_CMPL_AGG_ID_SFT;
 171         uint16_t data_cons;
 172         struct bnxt_tpa_info *tpa_info;
 173         struct rte_mbuf *mbuf;
 174
 175         data_cons = tpa_start->opaque;
 176         tpa_info = &rxr->tpa_info[agg_id];
 177
 178         mbuf = bnxt_consume_rx_buf(rxr, data_cons);
 179
 180         bnxt_reuse_rx_mbuf(rxr, tpa_info->mbuf);
 181
 182         tpa_info->mbuf = mbuf;
 183         tpa_info->len = rte_le_to_cpu_32(tpa_start->len);
 184
 185         mbuf->nb_segs = 1;
 186         mbuf->next = NULL;
 187         mbuf->pkt_len = rte_le_to_cpu_32(tpa_start->len);
 188         mbuf->data_len = mbuf->pkt_len;
 189         mbuf->port = rxq->port_id;
 190         mbuf->ol_flags = PKT_RX_LRO;
 191         if (likely(tpa_start->flags_type &
 192                    rte_cpu_to_le_32(RX_TPA_START_CMPL_FLAGS_RSS_VALID))) {
 193                 mbuf->hash.rss = rte_le_to_cpu_32(tpa_start->rss_hash);
 194                 mbuf->ol_flags |= PKT_RX_RSS_HASH;
 195         } else {
 196                 mbuf->hash.fdir.id = rte_le_to_cpu_16(tpa_start1->cfa_code);
 197                 mbuf->ol_flags |= PKT_RX_FDIR | PKT_RX_FDIR_ID;
 198         }
 199         if (tpa_start1->flags2 &
 200             rte_cpu_to_le_32(RX_TPA_START_CMPL_FLAGS2_META_FORMAT_VLAN)) {
 201                 mbuf->vlan_tci = rte_le_to_cpu_32(tpa_start1->metadata);
 202                 mbuf->ol_flags |= PKT_RX_VLAN_PKT;
 203         }
 204         if (likely(tpa_start1->flags2 &
 205                    rte_cpu_to_le_32(RX_TPA_START_CMPL_FLAGS2_L4_CS_CALC)))
 206                 mbuf->ol_flags |= PKT_RX_L4_CKSUM_GOOD;
 207
 208         /* recycle next mbuf */
 209         data_cons = RING_NEXT(rxr->rx_ring_struct, data_cons);
 210         bnxt_reuse_rx_mbuf(rxr, bnxt_consume_rx_buf(rxr, data_cons));
 211 }
 212
 213 static int bnxt_agg_bufs_valid(struct bnxt_cp_ring_info *cpr,
 214                 uint8_t agg_bufs, uint32_t raw_cp_cons)
 215 {
 216         uint16_t last_cp_cons;
 217         struct rx_pkt_cmpl *agg_cmpl;
 218
 219         raw_cp_cons = ADV_RAW_CMP(raw_cp_cons, agg_bufs);
 220         last_cp_cons = RING_CMP(cpr->cp_ring_struct, raw_cp_cons);
 221         agg_cmpl = (struct rx_pkt_cmpl *)&cpr->cp_desc_ring[last_cp_cons];
 222         return CMP_VALID(agg_cmpl, raw_cp_cons, cpr->cp_ring_struct);
 223 }
 224
 225 /* TPA consume agg buffer out of order, allocate connected data only */
 226 static int bnxt_prod_ag_mbuf(struct bnxt_rx_queue *rxq)
 227 {
 228         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 229         uint16_t next = RING_NEXT(rxr->ag_ring_struct, rxr->ag_prod);
 230
 231         /* TODO batch allocation for better performance */
 232         while (rte_bitmap_get(rxr->ag_bitmap, next)) {
 233                 if (unlikely(bnxt_alloc_ag_data(rxq, rxr, next))) {
 234                         RTE_LOG(ERR, PMD,
 235                                 "agg mbuf alloc failed: prod=0x%x\n", next);
 236                         break;
 237                 }
 238                 rte_bitmap_clear(rxr->ag_bitmap, next);
 239                 rxr->ag_prod = next;
 240                 next = RING_NEXT(rxr->ag_ring_struct, next);
 241         }
 242
 243         return 0;
 244 }
 245
 246 static int bnxt_rx_pages(struct bnxt_rx_queue *rxq,
 247                          struct rte_mbuf *mbuf, uint32_t *tmp_raw_cons,
 248                          uint8_t agg_buf)
 249 {
 250         struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 251         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 252         int i;
 253         uint16_t cp_cons, ag_cons;
 254         struct rx_pkt_cmpl *rxcmp;
 255         struct rte_mbuf *last = mbuf;
 256
 257         for (i = 0; i < agg_buf; i++) {
 258                 struct bnxt_sw_rx_bd *ag_buf;
 259                 struct rte_mbuf *ag_mbuf;
 260                 *tmp_raw_cons = NEXT_RAW_CMP(*tmp_raw_cons);
 261                 cp_cons = RING_CMP(cpr->cp_ring_struct, *tmp_raw_cons);
 262                 rxcmp = (struct rx_pkt_cmpl *)
 263                                         &cpr->cp_desc_ring[cp_cons];
 264
 265 #ifdef BNXT_DEBUG
 266                 bnxt_dump_cmpl(cp_cons, rxcmp);
 267 #endif
 268
 269                 ag_cons = rxcmp->opaque;
 270                 RTE_ASSERT(ag_cons <= rxr->ag_ring_struct->ring_mask);
 271                 ag_buf = &rxr->ag_buf_ring[ag_cons];
 272                 ag_mbuf = ag_buf->mbuf;
 273                 RTE_ASSERT(ag_mbuf != NULL);
 274
 275                 ag_mbuf->data_len = rte_le_to_cpu_16(rxcmp->len);
 276
 277                 mbuf->nb_segs++;
 278                 mbuf->pkt_len += ag_mbuf->data_len;
 279
 280                 last->next = ag_mbuf;
 281                 last = ag_mbuf;
 282
 283                 ag_buf->mbuf = NULL;
 284
 285                 /*
 286                  * As aggregation buffer consumed out of order in TPA module,
 287                  * use bitmap to track freed slots to be allocated and notified
 288                  * to NIC
 289                  */
 290                 rte_bitmap_set(rxr->ag_bitmap, ag_cons);
 291         }
 292         bnxt_prod_ag_mbuf(rxq);
 293         return 0;
 294 }
 295
 296 static inline struct rte_mbuf *bnxt_tpa_end(
 297                 struct bnxt_rx_queue *rxq,
 298                 uint32_t *raw_cp_cons,
 299                 struct rx_tpa_end_cmpl *tpa_end,
 300                 struct rx_tpa_end_cmpl_hi *tpa_end1 __rte_unused)
 301 {
 302         struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 303         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 304         uint8_t agg_id = (tpa_end->agg_id & RX_TPA_END_CMPL_AGG_ID_MASK)
 305                         >> RX_TPA_END_CMPL_AGG_ID_SFT;
 306         struct rte_mbuf *mbuf;
 307         uint8_t agg_bufs;
 308         struct bnxt_tpa_info *tpa_info;
 309
 310         tpa_info = &rxr->tpa_info[agg_id];
 311         mbuf = tpa_info->mbuf;
 312         RTE_ASSERT(mbuf != NULL);
 313
 314         rte_prefetch0(mbuf);
 315         agg_bufs = (rte_le_to_cpu_32(tpa_end->agg_bufs_v1) &
 316                 RX_TPA_END_CMPL_AGG_BUFS_MASK) >> RX_TPA_END_CMPL_AGG_BUFS_SFT;
 317         if (agg_bufs) {
 318                 if (!bnxt_agg_bufs_valid(cpr, agg_bufs, *raw_cp_cons))
 319                         return NULL;
 320                 bnxt_rx_pages(rxq, mbuf, raw_cp_cons, agg_bufs);
 321         }
 322         mbuf->l4_len = tpa_end->payload_offset;
 323
 324         struct rte_mbuf *new_data = __bnxt_alloc_rx_data(rxq->mb_pool);
 325         RTE_ASSERT(new_data != NULL);
 326         if (!new_data) {
 327                 rte_atomic64_inc(&rxq->bp->rx_mbuf_alloc_fail);
 328                 return NULL;
 329         }
 330         tpa_info->mbuf = new_data;
 331
 332         return mbuf;
 333 }
 334
 335 static int bnxt_rx_pkt(struct rte_mbuf **rx_pkt,
 336                             struct bnxt_rx_queue *rxq, uint32_t *raw_cons)
 337 {
 338         struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 339         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 340         struct rx_pkt_cmpl *rxcmp;
 341         struct rx_pkt_cmpl_hi *rxcmp1;
 342         uint32_t tmp_raw_cons = *raw_cons;
 343         uint16_t cons, prod, cp_cons =
 344             RING_CMP(cpr->cp_ring_struct, tmp_raw_cons);
 345 #ifdef BNXT_DEBUG
 346         uint16_t ag_cons;
 347 #endif
 348         struct rte_mbuf *mbuf;
 349         int rc = 0;
 350         uint8_t agg_buf = 0;
 351         uint16_t cmp_type;
 352
 353         rxcmp = (struct rx_pkt_cmpl *)
 354             &cpr->cp_desc_ring[cp_cons];
 355
 356         tmp_raw_cons = NEXT_RAW_CMP(tmp_raw_cons);
 357         cp_cons = RING_CMP(cpr->cp_ring_struct, tmp_raw_cons);
 358         rxcmp1 = (struct rx_pkt_cmpl_hi *)&cpr->cp_desc_ring[cp_cons];
 359
 360         if (!CMP_VALID(rxcmp1, tmp_raw_cons, cpr->cp_ring_struct))
 361                 return -EBUSY;
 362
 363         cmp_type = CMP_TYPE(rxcmp);
 364         if (cmp_type == RX_PKT_CMPL_TYPE_RX_L2_TPA_START) {
 365                 bnxt_tpa_start(rxq, (struct rx_tpa_start_cmpl *)rxcmp,
 366                                (struct rx_tpa_start_cmpl_hi *)rxcmp1);
 367                 rc = -EINVAL; /* Continue w/o new mbuf */
 368                 goto next_rx;
 369         } else if (cmp_type == RX_PKT_CMPL_TYPE_RX_L2_TPA_END) {
 370                 mbuf = bnxt_tpa_end(rxq, &tmp_raw_cons,
 371                                    (struct rx_tpa_end_cmpl *)rxcmp,
 372                                    (struct rx_tpa_end_cmpl_hi *)rxcmp1);
 373                 if (unlikely(!mbuf))
 374                         return -EBUSY;
 375                 *rx_pkt = mbuf;
 376                 goto next_rx;
 377         } else if (cmp_type != 0x11) {
 378                 rc = -EINVAL;
 379                 goto next_rx;
 380         }
 381
 382         agg_buf = (rxcmp->agg_bufs_v1 & RX_PKT_CMPL_AGG_BUFS_MASK)
 383                         >> RX_PKT_CMPL_AGG_BUFS_SFT;
 384         if (agg_buf && !bnxt_agg_bufs_valid(cpr, agg_buf, tmp_raw_cons))
 385                 return -EBUSY;
 386
 387         prod = rxr->rx_prod;
 388
 389         cons = rxcmp->opaque;
 390         mbuf = bnxt_consume_rx_buf(rxr, cons);
 391         rte_prefetch0(mbuf);
 392
 393         if (mbuf == NULL)
 394                 return -ENOMEM;
 395
 396         mbuf->nb_segs = 1;
 397         mbuf->next = NULL;
 398         mbuf->pkt_len = rxcmp->len;
 399         mbuf->data_len = mbuf->pkt_len;
 400         mbuf->port = rxq->port_id;
 401         mbuf->ol_flags = 0;
 402         if (rxcmp->flags_type & RX_PKT_CMPL_FLAGS_RSS_VALID) {
 403                 mbuf->hash.rss = rxcmp->rss_hash;
 404                 mbuf->ol_flags |= PKT_RX_RSS_HASH;
 405         } else {
 406                 mbuf->hash.fdir.id = rxcmp1->cfa_code;
 407                 mbuf->ol_flags |= PKT_RX_FDIR | PKT_RX_FDIR_ID;
 408         }
 409
 410         if (agg_buf)
 411                 bnxt_rx_pages(rxq, mbuf, &tmp_raw_cons, agg_buf);
 412
 413         if (rxcmp1->flags2 & RX_PKT_CMPL_FLAGS2_META_FORMAT_VLAN) {
 414                 mbuf->vlan_tci = rxcmp1->metadata &
 415                         (RX_PKT_CMPL_METADATA_VID_MASK |
 416                         RX_PKT_CMPL_METADATA_DE |
 417                         RX_PKT_CMPL_METADATA_PRI_MASK);
 418                 mbuf->ol_flags |= PKT_RX_VLAN_PKT;
 419         }
 420
 421 #ifdef BNXT_DEBUG
 422         if (rxcmp1->errors_v2 & RX_CMP_L2_ERRORS) {
 423                 /* Re-install the mbuf back to the rx ring */
 424                 bnxt_reuse_rx_mbuf(rxr, cons, mbuf);
 425                 if (agg_buf)
 426                         bnxt_reuse_ag_mbuf(rxr, ag_cons, mbuf);
 427
 428                 rc = -EIO;
 429                 goto next_rx;
 430         }
 431 #endif
 432         /*
 433          * TODO: Redesign this....
 434          * If the allocation fails, the packet does not get received.
 435          * Simply returning this will result in slowly falling behind
 436          * on the producer ring buffers.
 437          * Instead, "filling up" the producer just before ringing the
 438          * doorbell could be a better solution since it will let the
 439          * producer ring starve until memory is available again pushing
 440          * the drops into hardware and getting them out of the driver
 441          * allowing recovery to a full producer ring.
 442          *
 443          * This could also help with cache usage by preventing per-packet
 444          * calls in favour of a tight loop with the same function being called
 445          * in it.
 446          */
 447         prod = RING_NEXT(rxr->rx_ring_struct, prod);
 448         if (bnxt_alloc_rx_data(rxq, rxr, prod)) {
 449                 RTE_LOG(ERR, PMD, "mbuf alloc failed with prod=0x%x\n", prod);
 450                 rc = -ENOMEM;
 451         }
 452         rxr->rx_prod = prod;
 453         /*
 454          * All MBUFs are allocated with the same size under DPDK,
 455          * no optimization for rx_copy_thresh
 456          */
 457
 458         *rx_pkt = mbuf;
 459
 460 next_rx:
 461
 462         *raw_cons = tmp_raw_cons;
 463
 464         return rc;
 465 }
 466
 467 uint16_t bnxt_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 468                                uint16_t nb_pkts)
 469 {
 470         struct bnxt_rx_queue *rxq = rx_queue;
 471         struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 472         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 473         uint32_t raw_cons = cpr->cp_raw_cons;
 474         uint32_t cons;
 475         int nb_rx_pkts = 0;
 476         struct rx_pkt_cmpl *rxcmp;
 477         uint16_t prod = rxr->rx_prod;
 478         uint16_t ag_prod = rxr->ag_prod;
 479
 480         /* Handle RX burst request */
 481         while (1) {
 482                 int rc;
 483
 484                 cons = RING_CMP(cpr->cp_ring_struct, raw_cons);
 485                 rte_prefetch0(&cpr->cp_desc_ring[cons]);
 486                 rxcmp = (struct rx_pkt_cmpl *)&cpr->cp_desc_ring[cons];
 487
 488                 if (!CMP_VALID(rxcmp, raw_cons, cpr->cp_ring_struct))
 489                         break;
 490
 491                 /* TODO: Avoid magic numbers... */
 492                 if ((CMP_TYPE(rxcmp) & 0x30) == 0x10) {
 493                         rc = bnxt_rx_pkt(&rx_pkts[nb_rx_pkts], rxq, &raw_cons);
 494                         if (likely(!rc))
 495                                 nb_rx_pkts++;
 496                         if (rc == -EBUSY)       /* partial completion */
 497                                 break;
 498                 }
 499                 raw_cons = NEXT_RAW_CMP(raw_cons);
 500                 if (nb_rx_pkts == nb_pkts)
 501                         break;
 502         }
 503
 504         cpr->cp_raw_cons = raw_cons;
 505         if (prod == rxr->rx_prod && ag_prod == rxr->ag_prod) {
 506                 /*
 507                  * For PMD, there is no need to keep on pushing to REARM
 508                  * the doorbell if there are no new completions
 509                  */
 510                 return nb_rx_pkts;
 511         }
 512
 513         B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
 514         B_RX_DB(rxr->rx_doorbell, rxr->rx_prod);
 515         /* Ring the AGG ring DB */
 516         B_RX_DB(rxr->ag_doorbell, rxr->ag_prod);
 517         return nb_rx_pkts;
 518 }
 519
 520 void bnxt_free_rx_rings(struct bnxt *bp)
 521 {
 522         int i;
 523
 524         for (i = 0; i < (int)bp->rx_nr_rings; i++) {
 525                 struct bnxt_rx_queue *rxq = bp->rx_queues[i];
 526
 527                 if (!rxq)
 528                         continue;
 529
 530                 bnxt_free_ring(rxq->rx_ring->rx_ring_struct);
 531                 rte_free(rxq->rx_ring->rx_ring_struct);
 532
 533                 /* Free the Aggregator ring */
 534                 bnxt_free_ring(rxq->rx_ring->ag_ring_struct);
 535                 rte_free(rxq->rx_ring->ag_ring_struct);
 536                 rxq->rx_ring->ag_ring_struct = NULL;
 537
 538                 rte_free(rxq->rx_ring);
 539
 540                 bnxt_free_ring(rxq->cp_ring->cp_ring_struct);
 541                 rte_free(rxq->cp_ring->cp_ring_struct);
 542                 rte_free(rxq->cp_ring);
 543
 544                 rte_free(rxq);
 545                 bp->rx_queues[i] = NULL;
 546         }
 547 }
 548
 549 int bnxt_init_rx_ring_struct(struct bnxt_rx_queue *rxq, unsigned int socket_id)
 550 {
 551         struct bnxt_cp_ring_info *cpr;
 552         struct bnxt_rx_ring_info *rxr;
 553         struct bnxt_ring *ring;
 554
 555         rxq->rx_buf_use_size = BNXT_MAX_MTU + ETHER_HDR_LEN + ETHER_CRC_LEN +
 556                                (2 * VLAN_TAG_SIZE);
 557         rxq->rx_buf_size = rxq->rx_buf_use_size + sizeof(struct rte_mbuf);
 558
 559         rxr = rte_zmalloc_socket("bnxt_rx_ring",
 560                                  sizeof(struct bnxt_rx_ring_info),
 561                                  RTE_CACHE_LINE_SIZE, socket_id);
 562         if (rxr == NULL)
 563                 return -ENOMEM;
 564         rxq->rx_ring = rxr;
 565
 566         ring = rte_zmalloc_socket("bnxt_rx_ring_struct",
 567                                    sizeof(struct bnxt_ring),
 568                                    RTE_CACHE_LINE_SIZE, socket_id);
 569         if (ring == NULL)
 570                 return -ENOMEM;
 571         rxr->rx_ring_struct = ring;
 572         ring->ring_size = rte_align32pow2(rxq->nb_rx_desc);
 573         ring->ring_mask = ring->ring_size - 1;
 574         ring->bd = (void *)rxr->rx_desc_ring;
 575         ring->bd_dma = rxr->rx_desc_mapping;
 576         ring->vmem_size = ring->ring_size * sizeof(struct bnxt_sw_rx_bd);
 577         ring->vmem = (void **)&rxr->rx_buf_ring;
 578
 579         cpr = rte_zmalloc_socket("bnxt_rx_ring",
 580                                  sizeof(struct bnxt_cp_ring_info),
 581                                  RTE_CACHE_LINE_SIZE, socket_id);
 582         if (cpr == NULL)
 583                 return -ENOMEM;
 584         rxq->cp_ring = cpr;
 585
 586         ring = rte_zmalloc_socket("bnxt_rx_ring_struct",
 587                                    sizeof(struct bnxt_ring),
 588                                    RTE_CACHE_LINE_SIZE, socket_id);
 589         if (ring == NULL)
 590                 return -ENOMEM;
 591         cpr->cp_ring_struct = ring;
 592         ring->ring_size = rte_align32pow2(rxr->rx_ring_struct->ring_size *
 593                                           (2 + AGG_RING_SIZE_FACTOR));
 594         ring->ring_mask = ring->ring_size - 1;
 595         ring->bd = (void *)cpr->cp_desc_ring;
 596         ring->bd_dma = cpr->cp_desc_mapping;
 597         ring->vmem_size = 0;
 598         ring->vmem = NULL;
 599
 600         /* Allocate Aggregator rings */
 601         ring = rte_zmalloc_socket("bnxt_rx_ring_struct",
 602                                    sizeof(struct bnxt_ring),
 603                                    RTE_CACHE_LINE_SIZE, socket_id);
 604         if (ring == NULL)
 605                 return -ENOMEM;
 606         rxr->ag_ring_struct = ring;
 607         ring->ring_size = rte_align32pow2(rxq->nb_rx_desc *
 608                                           AGG_RING_SIZE_FACTOR);
 609         ring->ring_mask = ring->ring_size - 1;
 610         ring->bd = (void *)rxr->ag_desc_ring;
 611         ring->bd_dma = rxr->ag_desc_mapping;
 612         ring->vmem_size = ring->ring_size * sizeof(struct bnxt_sw_rx_bd);
 613         ring->vmem = (void **)&rxr->ag_buf_ring;
 614
 615         return 0;
 616 }
 617
 618 static void bnxt_init_rxbds(struct bnxt_ring *ring, uint32_t type,
 619                             uint16_t len)
 620 {
 621         uint32_t j;
 622         struct rx_prod_pkt_bd *rx_bd_ring = (struct rx_prod_pkt_bd *)ring->bd;
 623
 624         if (!rx_bd_ring)
 625                 return;
 626         for (j = 0; j < ring->ring_size; j++) {
 627                 rx_bd_ring[j].flags_type = rte_cpu_to_le_16(type);
 628                 rx_bd_ring[j].len = rte_cpu_to_le_16(len);
 629                 rx_bd_ring[j].opaque = j;
 630         }
 631 }
 632
 633 int bnxt_init_one_rx_ring(struct bnxt_rx_queue *rxq)
 634 {
 635         struct bnxt_rx_ring_info *rxr;
 636         struct bnxt_ring *ring;
 637         uint32_t prod, type;
 638         unsigned int i;
 639         uint16_t size;
 640
 641         size = rte_pktmbuf_data_room_size(rxq->mb_pool) - RTE_PKTMBUF_HEADROOM;
 642         if (rxq->rx_buf_use_size <= size)
 643                 size = rxq->rx_buf_use_size;
 644
 645         type = RX_PROD_PKT_BD_TYPE_RX_PROD_PKT;
 646
 647         rxr = rxq->rx_ring;
 648         ring = rxr->rx_ring_struct;
 649         bnxt_init_rxbds(ring, type, size);
 650
 651         prod = rxr->rx_prod;
 652         for (i = 0; i < ring->ring_size; i++) {
 653                 if (bnxt_alloc_rx_data(rxq, rxr, prod) != 0) {
 654                         RTE_LOG(WARNING, PMD,
 655                                 "init'ed rx ring %d with %d/%d mbufs only\n",
 656                                 rxq->queue_id, i, ring->ring_size);
 657                         break;
 658                 }
 659                 rxr->rx_prod = prod;
 660                 prod = RING_NEXT(rxr->rx_ring_struct, prod);
 661         }
 662         RTE_LOG(DEBUG, PMD, "%s\n", __func__);
 663
 664         ring = rxr->ag_ring_struct;
 665         type = RX_PROD_AGG_BD_TYPE_RX_PROD_AGG;
 666         bnxt_init_rxbds(ring, type, size);
 667         prod = rxr->ag_prod;
 668
 669         for (i = 0; i < ring->ring_size; i++) {
 670                 if (bnxt_alloc_ag_data(rxq, rxr, prod) != 0) {
 671                         RTE_LOG(WARNING, PMD,
 672                         "init'ed AG ring %d with %d/%d mbufs only\n",
 673                         rxq->queue_id, i, ring->ring_size);
 674                         break;
 675                 }
 676                 rxr->ag_prod = prod;
 677                 prod = RING_NEXT(rxr->ag_ring_struct, prod);
 678         }
 679         RTE_LOG(DEBUG, PMD, "%s AGG Done!\n", __func__);
 680
 681         if (rxr->tpa_info) {
 682                 for (i = 0; i < BNXT_TPA_MAX; i++) {
 683                         rxr->tpa_info[i].mbuf =
 684                                 __bnxt_alloc_rx_data(rxq->mb_pool);
 685                         if (!rxr->tpa_info[i].mbuf) {
 686                                 rte_atomic64_inc(&rxq->bp->rx_mbuf_alloc_fail);
 687                                 return -ENOMEM;
 688                         }
 689                 }
 690         }
 691         RTE_LOG(DEBUG, PMD, "%s TPA alloc Done!\n", __func__);
 692
 693         return 0;
 694 }