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         cpr->valid = FLIP_VALID(raw_cp_cons,
 223                                 cpr->cp_ring_struct->ring_mask,
 224                                 cpr->valid);
 225         return CMP_VALID(agg_cmpl, raw_cp_cons, cpr->cp_ring_struct);
 226 }
 227
 228 /* TPA consume agg buffer out of order, allocate connected data only */
 229 static int bnxt_prod_ag_mbuf(struct bnxt_rx_queue *rxq)
 230 {
 231         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 232         uint16_t next = RING_NEXT(rxr->ag_ring_struct, rxr->ag_prod);
 233
 234         /* TODO batch allocation for better performance */
 235         while (rte_bitmap_get(rxr->ag_bitmap, next)) {
 236                 if (unlikely(bnxt_alloc_ag_data(rxq, rxr, next))) {
 237                         RTE_LOG(ERR, PMD,
 238                                 "agg mbuf alloc failed: prod=0x%x\n", next);
 239                         break;
 240                 }
 241                 rte_bitmap_clear(rxr->ag_bitmap, next);
 242                 rxr->ag_prod = next;
 243                 next = RING_NEXT(rxr->ag_ring_struct, next);
 244         }
 245
 246         return 0;
 247 }
 248
 249 static int bnxt_rx_pages(struct bnxt_rx_queue *rxq,
 250                          struct rte_mbuf *mbuf, uint32_t *tmp_raw_cons,
 251                          uint8_t agg_buf)
 252 {
 253         struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 254         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 255         int i;
 256         uint16_t cp_cons, ag_cons;
 257         struct rx_pkt_cmpl *rxcmp;
 258         struct rte_mbuf *last = mbuf;
 259
 260         for (i = 0; i < agg_buf; i++) {
 261                 struct bnxt_sw_rx_bd *ag_buf;
 262                 struct rte_mbuf *ag_mbuf;
 263                 *tmp_raw_cons = NEXT_RAW_CMP(*tmp_raw_cons);
 264                 cp_cons = RING_CMP(cpr->cp_ring_struct, *tmp_raw_cons);
 265                 rxcmp = (struct rx_pkt_cmpl *)
 266                                         &cpr->cp_desc_ring[cp_cons];
 267
 268 #ifdef BNXT_DEBUG
 269                 bnxt_dump_cmpl(cp_cons, rxcmp);
 270 #endif
 271
 272                 ag_cons = rxcmp->opaque;
 273                 RTE_ASSERT(ag_cons <= rxr->ag_ring_struct->ring_mask);
 274                 ag_buf = &rxr->ag_buf_ring[ag_cons];
 275                 ag_mbuf = ag_buf->mbuf;
 276                 RTE_ASSERT(ag_mbuf != NULL);
 277
 278                 ag_mbuf->data_len = rte_le_to_cpu_16(rxcmp->len);
 279
 280                 mbuf->nb_segs++;
 281                 mbuf->pkt_len += ag_mbuf->data_len;
 282
 283                 last->next = ag_mbuf;
 284                 last = ag_mbuf;
 285
 286                 ag_buf->mbuf = NULL;
 287
 288                 /*
 289                  * As aggregation buffer consumed out of order in TPA module,
 290                  * use bitmap to track freed slots to be allocated and notified
 291                  * to NIC
 292                  */
 293                 rte_bitmap_set(rxr->ag_bitmap, ag_cons);
 294         }
 295         bnxt_prod_ag_mbuf(rxq);
 296         return 0;
 297 }
 298
 299 static inline struct rte_mbuf *bnxt_tpa_end(
 300                 struct bnxt_rx_queue *rxq,
 301                 uint32_t *raw_cp_cons,
 302                 struct rx_tpa_end_cmpl *tpa_end,
 303                 struct rx_tpa_end_cmpl_hi *tpa_end1 __rte_unused)
 304 {
 305         struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 306         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 307         uint8_t agg_id = (tpa_end->agg_id & RX_TPA_END_CMPL_AGG_ID_MASK)
 308                         >> RX_TPA_END_CMPL_AGG_ID_SFT;
 309         struct rte_mbuf *mbuf;
 310         uint8_t agg_bufs;
 311         struct bnxt_tpa_info *tpa_info;
 312
 313         tpa_info = &rxr->tpa_info[agg_id];
 314         mbuf = tpa_info->mbuf;
 315         RTE_ASSERT(mbuf != NULL);
 316
 317         rte_prefetch0(mbuf);
 318         agg_bufs = (rte_le_to_cpu_32(tpa_end->agg_bufs_v1) &
 319                 RX_TPA_END_CMPL_AGG_BUFS_MASK) >> RX_TPA_END_CMPL_AGG_BUFS_SFT;
 320         if (agg_bufs) {
 321                 if (!bnxt_agg_bufs_valid(cpr, agg_bufs, *raw_cp_cons))
 322                         return NULL;
 323                 bnxt_rx_pages(rxq, mbuf, raw_cp_cons, agg_bufs);
 324         }
 325         mbuf->l4_len = tpa_end->payload_offset;
 326
 327         struct rte_mbuf *new_data = __bnxt_alloc_rx_data(rxq->mb_pool);
 328         RTE_ASSERT(new_data != NULL);
 329         if (!new_data) {
 330                 rte_atomic64_inc(&rxq->bp->rx_mbuf_alloc_fail);
 331                 return NULL;
 332         }
 333         tpa_info->mbuf = new_data;
 334
 335         return mbuf;
 336 }
 337
 338 static int bnxt_rx_pkt(struct rte_mbuf **rx_pkt,
 339                             struct bnxt_rx_queue *rxq, uint32_t *raw_cons)
 340 {
 341         struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 342         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 343         struct rx_pkt_cmpl *rxcmp;
 344         struct rx_pkt_cmpl_hi *rxcmp1;
 345         uint32_t tmp_raw_cons = *raw_cons;
 346         uint16_t cons, prod, cp_cons =
 347             RING_CMP(cpr->cp_ring_struct, tmp_raw_cons);
 348 #ifdef BNXT_DEBUG
 349         uint16_t ag_cons;
 350 #endif
 351         struct rte_mbuf *mbuf;
 352         int rc = 0;
 353         uint8_t agg_buf = 0;
 354         uint16_t cmp_type;
 355
 356         rxcmp = (struct rx_pkt_cmpl *)
 357             &cpr->cp_desc_ring[cp_cons];
 358
 359         tmp_raw_cons = NEXT_RAW_CMP(tmp_raw_cons);
 360         cp_cons = RING_CMP(cpr->cp_ring_struct, tmp_raw_cons);
 361         rxcmp1 = (struct rx_pkt_cmpl_hi *)&cpr->cp_desc_ring[cp_cons];
 362
 363         if (!CMP_VALID(rxcmp1, tmp_raw_cons, cpr->cp_ring_struct))
 364                 return -EBUSY;
 365
 366         cpr->valid = FLIP_VALID(cp_cons,
 367                                 cpr->cp_ring_struct->ring_mask,
 368                                 cpr->valid);
 369
 370         cmp_type = CMP_TYPE(rxcmp);
 371         if (cmp_type == RX_PKT_CMPL_TYPE_RX_L2_TPA_START) {
 372                 bnxt_tpa_start(rxq, (struct rx_tpa_start_cmpl *)rxcmp,
 373                                (struct rx_tpa_start_cmpl_hi *)rxcmp1);
 374                 rc = -EINVAL; /* Continue w/o new mbuf */
 375                 goto next_rx;
 376         } else if (cmp_type == RX_PKT_CMPL_TYPE_RX_L2_TPA_END) {
 377                 mbuf = bnxt_tpa_end(rxq, &tmp_raw_cons,
 378                                    (struct rx_tpa_end_cmpl *)rxcmp,
 379                                    (struct rx_tpa_end_cmpl_hi *)rxcmp1);
 380                 if (unlikely(!mbuf))
 381                         return -EBUSY;
 382                 *rx_pkt = mbuf;
 383                 goto next_rx;
 384         } else if (cmp_type != 0x11) {
 385                 rc = -EINVAL;
 386                 goto next_rx;
 387         }
 388
 389         agg_buf = (rxcmp->agg_bufs_v1 & RX_PKT_CMPL_AGG_BUFS_MASK)
 390                         >> RX_PKT_CMPL_AGG_BUFS_SFT;
 391         if (agg_buf && !bnxt_agg_bufs_valid(cpr, agg_buf, tmp_raw_cons))
 392                 return -EBUSY;
 393
 394         prod = rxr->rx_prod;
 395
 396         cons = rxcmp->opaque;
 397         mbuf = bnxt_consume_rx_buf(rxr, cons);
 398         rte_prefetch0(mbuf);
 399
 400         if (mbuf == NULL)
 401                 return -EBUSY;
 402
 403         mbuf->nb_segs = 1;
 404         mbuf->next = NULL;
 405         mbuf->pkt_len = rxcmp->len;
 406         mbuf->data_len = mbuf->pkt_len;
 407         mbuf->port = rxq->port_id;
 408         mbuf->ol_flags = 0;
 409         if (rxcmp->flags_type & RX_PKT_CMPL_FLAGS_RSS_VALID) {
 410                 mbuf->hash.rss = rxcmp->rss_hash;
 411                 mbuf->ol_flags |= PKT_RX_RSS_HASH;
 412         } else {
 413                 mbuf->hash.fdir.id = rxcmp1->cfa_code;
 414                 mbuf->ol_flags |= PKT_RX_FDIR | PKT_RX_FDIR_ID;
 415         }
 416
 417         if (agg_buf)
 418                 bnxt_rx_pages(rxq, mbuf, &tmp_raw_cons, agg_buf);
 419
 420         if (rxcmp1->flags2 & RX_PKT_CMPL_FLAGS2_META_FORMAT_VLAN) {
 421                 mbuf->vlan_tci = rxcmp1->metadata &
 422                         (RX_PKT_CMPL_METADATA_VID_MASK |
 423                         RX_PKT_CMPL_METADATA_DE |
 424                         RX_PKT_CMPL_METADATA_PRI_MASK);
 425                 mbuf->ol_flags |= PKT_RX_VLAN_PKT;
 426         }
 427
 428         if (likely(RX_CMP_IP_CS_OK(rxcmp1)))
 429                 mbuf->ol_flags |= PKT_RX_IP_CKSUM_GOOD;
 430         else
 431                 mbuf->ol_flags |= PKT_RX_IP_CKSUM_NONE;
 432
 433         if (likely(RX_CMP_L4_CS_OK(rxcmp1)))
 434                 mbuf->ol_flags |= PKT_RX_L4_CKSUM_GOOD;
 435         else
 436                 mbuf->ol_flags |= PKT_RX_L4_CKSUM_NONE;
 437
 438
 439 #ifdef BNXT_DEBUG
 440         if (rxcmp1->errors_v2 & RX_CMP_L2_ERRORS) {
 441                 /* Re-install the mbuf back to the rx ring */
 442                 bnxt_reuse_rx_mbuf(rxr, cons, mbuf);
 443                 if (agg_buf)
 444                         bnxt_reuse_ag_mbuf(rxr, ag_cons, mbuf);
 445
 446                 rc = -EIO;
 447                 goto next_rx;
 448         }
 449 #endif
 450         /*
 451          * TODO: Redesign this....
 452          * If the allocation fails, the packet does not get received.
 453          * Simply returning this will result in slowly falling behind
 454          * on the producer ring buffers.
 455          * Instead, "filling up" the producer just before ringing the
 456          * doorbell could be a better solution since it will let the
 457          * producer ring starve until memory is available again pushing
 458          * the drops into hardware and getting them out of the driver
 459          * allowing recovery to a full producer ring.
 460          *
 461          * This could also help with cache usage by preventing per-packet
 462          * calls in favour of a tight loop with the same function being called
 463          * in it.
 464          */
 465         prod = RING_NEXT(rxr->rx_ring_struct, prod);
 466         if (bnxt_alloc_rx_data(rxq, rxr, prod)) {
 467                 RTE_LOG(ERR, PMD, "mbuf alloc failed with prod=0x%x\n", prod);
 468                 rc = -ENOMEM;
 469                 goto rx;
 470         }
 471         rxr->rx_prod = prod;
 472         /*
 473          * All MBUFs are allocated with the same size under DPDK,
 474          * no optimization for rx_copy_thresh
 475          */
 476 rx:
 477         *rx_pkt = mbuf;
 478
 479 next_rx:
 480
 481         *raw_cons = tmp_raw_cons;
 482
 483         return rc;
 484 }
 485
 486 uint16_t bnxt_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 487                                uint16_t nb_pkts)
 488 {
 489         struct bnxt_rx_queue *rxq = rx_queue;
 490         struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 491         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 492         uint32_t raw_cons = cpr->cp_raw_cons;
 493         uint32_t cons;
 494         int nb_rx_pkts = 0;
 495         struct rx_pkt_cmpl *rxcmp;
 496         uint16_t prod = rxr->rx_prod;
 497         uint16_t ag_prod = rxr->ag_prod;
 498         int rc = 0;
 499
 500         /* Handle RX burst request */
 501         while (1) {
 502                 cons = RING_CMP(cpr->cp_ring_struct, raw_cons);
 503                 rte_prefetch0(&cpr->cp_desc_ring[cons]);
 504                 rxcmp = (struct rx_pkt_cmpl *)&cpr->cp_desc_ring[cons];
 505
 506                 if (!CMP_VALID(rxcmp, raw_cons, cpr->cp_ring_struct))
 507                         break;
 508                 cpr->valid = FLIP_VALID(cons,
 509                                         cpr->cp_ring_struct->ring_mask,
 510                                         cpr->valid);
 511
 512                 /* TODO: Avoid magic numbers... */
 513                 if ((CMP_TYPE(rxcmp) & 0x30) == 0x10) {
 514                         rc = bnxt_rx_pkt(&rx_pkts[nb_rx_pkts], rxq, &raw_cons);
 515                         if (likely(!rc) || rc == -ENOMEM)
 516                                 nb_rx_pkts++;
 517                         if (rc == -EBUSY)       /* partial completion */
 518                                 break;
 519                 }
 520                 raw_cons = NEXT_RAW_CMP(raw_cons);
 521                 if (nb_rx_pkts == nb_pkts)
 522                         break;
 523         }
 524
 525         cpr->cp_raw_cons = raw_cons;
 526         if (prod == rxr->rx_prod && ag_prod == rxr->ag_prod) {
 527                 /*
 528                  * For PMD, there is no need to keep on pushing to REARM
 529                  * the doorbell if there are no new completions
 530                  */
 531                 return nb_rx_pkts;
 532         }
 533
 534         B_CP_DIS_DB(cpr, cpr->cp_raw_cons);
 535         B_RX_DB(rxr->rx_doorbell, rxr->rx_prod);
 536         /* Ring the AGG ring DB */
 537         B_RX_DB(rxr->ag_doorbell, rxr->ag_prod);
 538
 539         /* Attempt to alloc Rx buf in case of a previous allocation failure. */
 540         if (rc == -ENOMEM) {
 541                 int i;
 542
 543                 for (i = prod; i <= nb_rx_pkts;
 544                         i = RING_NEXT(rxr->rx_ring_struct, i)) {
 545                         struct bnxt_sw_rx_bd *rx_buf = &rxr->rx_buf_ring[i];
 546
 547                         /* Buffer already allocated for this index. */
 548                         if (rx_buf->mbuf != NULL)
 549                                 continue;
 550
 551                         /* This slot is empty. Alloc buffer for Rx */
 552                         if (!bnxt_alloc_rx_data(rxq, rxr, i)) {
 553                                 rxr->rx_prod = i;
 554                                 B_RX_DB(rxr->rx_doorbell, rxr->rx_prod);
 555                         } else {
 556                                 RTE_LOG(ERR, PMD, "Alloc  mbuf failed\n");
 557                                 break;
 558                         }
 559                 }
 560         }
 561
 562         return nb_rx_pkts;
 563 }
 564
 565 void bnxt_free_rx_rings(struct bnxt *bp)
 566 {
 567         int i;
 568
 569         for (i = 0; i < (int)bp->rx_nr_rings; i++) {
 570                 struct bnxt_rx_queue *rxq = bp->rx_queues[i];
 571
 572                 if (!rxq)
 573                         continue;
 574
 575                 bnxt_free_ring(rxq->rx_ring->rx_ring_struct);
 576                 rte_free(rxq->rx_ring->rx_ring_struct);
 577
 578                 /* Free the Aggregator ring */
 579                 bnxt_free_ring(rxq->rx_ring->ag_ring_struct);
 580                 rte_free(rxq->rx_ring->ag_ring_struct);
 581                 rxq->rx_ring->ag_ring_struct = NULL;
 582
 583                 rte_free(rxq->rx_ring);
 584
 585                 bnxt_free_ring(rxq->cp_ring->cp_ring_struct);
 586                 rte_free(rxq->cp_ring->cp_ring_struct);
 587                 rte_free(rxq->cp_ring);
 588
 589                 rte_free(rxq);
 590                 bp->rx_queues[i] = NULL;
 591         }
 592 }
 593
 594 int bnxt_init_rx_ring_struct(struct bnxt_rx_queue *rxq, unsigned int socket_id)
 595 {
 596         struct bnxt_cp_ring_info *cpr;
 597         struct bnxt_rx_ring_info *rxr;
 598         struct bnxt_ring *ring;
 599
 600         rxq->rx_buf_use_size = BNXT_MAX_MTU + ETHER_HDR_LEN + ETHER_CRC_LEN +
 601                                (2 * VLAN_TAG_SIZE);
 602         rxq->rx_buf_size = rxq->rx_buf_use_size + sizeof(struct rte_mbuf);
 603
 604         rxr = rte_zmalloc_socket("bnxt_rx_ring",
 605                                  sizeof(struct bnxt_rx_ring_info),
 606                                  RTE_CACHE_LINE_SIZE, socket_id);
 607         if (rxr == NULL)
 608                 return -ENOMEM;
 609         rxq->rx_ring = rxr;
 610
 611         ring = rte_zmalloc_socket("bnxt_rx_ring_struct",
 612                                    sizeof(struct bnxt_ring),
 613                                    RTE_CACHE_LINE_SIZE, socket_id);
 614         if (ring == NULL)
 615                 return -ENOMEM;
 616         rxr->rx_ring_struct = ring;
 617         ring->ring_size = rte_align32pow2(rxq->nb_rx_desc);
 618         ring->ring_mask = ring->ring_size - 1;
 619         ring->bd = (void *)rxr->rx_desc_ring;
 620         ring->bd_dma = rxr->rx_desc_mapping;
 621         ring->vmem_size = ring->ring_size * sizeof(struct bnxt_sw_rx_bd);
 622         ring->vmem = (void **)&rxr->rx_buf_ring;
 623
 624         cpr = rte_zmalloc_socket("bnxt_rx_ring",
 625                                  sizeof(struct bnxt_cp_ring_info),
 626                                  RTE_CACHE_LINE_SIZE, socket_id);
 627         if (cpr == NULL)
 628                 return -ENOMEM;
 629         rxq->cp_ring = cpr;
 630
 631         ring = rte_zmalloc_socket("bnxt_rx_ring_struct",
 632                                    sizeof(struct bnxt_ring),
 633                                    RTE_CACHE_LINE_SIZE, socket_id);
 634         if (ring == NULL)
 635                 return -ENOMEM;
 636         cpr->cp_ring_struct = ring;
 637         ring->ring_size = rte_align32pow2(rxr->rx_ring_struct->ring_size *
 638                                           (2 + AGG_RING_SIZE_FACTOR));
 639         ring->ring_mask = ring->ring_size - 1;
 640         ring->bd = (void *)cpr->cp_desc_ring;
 641         ring->bd_dma = cpr->cp_desc_mapping;
 642         ring->vmem_size = 0;
 643         ring->vmem = NULL;
 644
 645         /* Allocate Aggregator rings */
 646         ring = rte_zmalloc_socket("bnxt_rx_ring_struct",
 647                                    sizeof(struct bnxt_ring),
 648                                    RTE_CACHE_LINE_SIZE, socket_id);
 649         if (ring == NULL)
 650                 return -ENOMEM;
 651         rxr->ag_ring_struct = ring;
 652         ring->ring_size = rte_align32pow2(rxq->nb_rx_desc *
 653                                           AGG_RING_SIZE_FACTOR);
 654         ring->ring_mask = ring->ring_size - 1;
 655         ring->bd = (void *)rxr->ag_desc_ring;
 656         ring->bd_dma = rxr->ag_desc_mapping;
 657         ring->vmem_size = ring->ring_size * sizeof(struct bnxt_sw_rx_bd);
 658         ring->vmem = (void **)&rxr->ag_buf_ring;
 659
 660         return 0;
 661 }
 662
 663 static void bnxt_init_rxbds(struct bnxt_ring *ring, uint32_t type,
 664                             uint16_t len)
 665 {
 666         uint32_t j;
 667         struct rx_prod_pkt_bd *rx_bd_ring = (struct rx_prod_pkt_bd *)ring->bd;
 668
 669         if (!rx_bd_ring)
 670                 return;
 671         for (j = 0; j < ring->ring_size; j++) {
 672                 rx_bd_ring[j].flags_type = rte_cpu_to_le_16(type);
 673                 rx_bd_ring[j].len = rte_cpu_to_le_16(len);
 674                 rx_bd_ring[j].opaque = j;
 675         }
 676 }
 677
 678 int bnxt_init_one_rx_ring(struct bnxt_rx_queue *rxq)
 679 {
 680         struct bnxt_rx_ring_info *rxr;
 681         struct bnxt_ring *ring;
 682         uint32_t prod, type;
 683         unsigned int i;
 684         uint16_t size;
 685
 686         size = rte_pktmbuf_data_room_size(rxq->mb_pool) - RTE_PKTMBUF_HEADROOM;
 687         if (rxq->rx_buf_use_size <= size)
 688                 size = rxq->rx_buf_use_size;
 689
 690         type = RX_PROD_PKT_BD_TYPE_RX_PROD_PKT;
 691
 692         rxr = rxq->rx_ring;
 693         ring = rxr->rx_ring_struct;
 694         bnxt_init_rxbds(ring, type, size);
 695
 696         prod = rxr->rx_prod;
 697         for (i = 0; i < ring->ring_size; i++) {
 698                 if (bnxt_alloc_rx_data(rxq, rxr, prod) != 0) {
 699                         RTE_LOG(WARNING, PMD,
 700                                 "init'ed rx ring %d with %d/%d mbufs only\n",
 701                                 rxq->queue_id, i, ring->ring_size);
 702                         break;
 703                 }
 704                 rxr->rx_prod = prod;
 705                 prod = RING_NEXT(rxr->rx_ring_struct, prod);
 706         }
 707         RTE_LOG(DEBUG, PMD, "%s\n", __func__);
 708
 709         ring = rxr->ag_ring_struct;
 710         type = RX_PROD_AGG_BD_TYPE_RX_PROD_AGG;
 711         bnxt_init_rxbds(ring, type, size);
 712         prod = rxr->ag_prod;
 713
 714         for (i = 0; i < ring->ring_size; i++) {
 715                 if (bnxt_alloc_ag_data(rxq, rxr, prod) != 0) {
 716                         RTE_LOG(WARNING, PMD,
 717                         "init'ed AG ring %d with %d/%d mbufs only\n",
 718                         rxq->queue_id, i, ring->ring_size);
 719                         break;
 720                 }
 721                 rxr->ag_prod = prod;
 722                 prod = RING_NEXT(rxr->ag_ring_struct, prod);
 723         }
 724         RTE_LOG(DEBUG, PMD, "%s AGG Done!\n", __func__);
 725
 726         if (rxr->tpa_info) {
 727                 for (i = 0; i < BNXT_TPA_MAX; i++) {
 728                         rxr->tpa_info[i].mbuf =
 729                                 __bnxt_alloc_rx_data(rxq->mb_pool);
 730                         if (!rxr->tpa_info[i].mbuf) {
 731                                 rte_atomic64_inc(&rxq->bp->rx_mbuf_alloc_fail);
 732                                 return -ENOMEM;
 733                         }
 734                 }
 735         }
 736         RTE_LOG(DEBUG, PMD, "%s TPA alloc Done!\n", __func__);
 737
 738         return 0;
 739 }