drivers/net/bnxt/bnxt_rxr.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 #include <stdbool.h>
   8
   9 #include <rte_bitmap.h>
  10 #include <rte_byteorder.h>
  11 #include <rte_malloc.h>
  12 #include <rte_memory.h>
  13
  14 #include "bnxt.h"
  15 #include "bnxt_ring.h"
  16 #include "bnxt_rxr.h"
  17 #include "bnxt_rxq.h"
  18 #include "hsi_struct_def_dpdk.h"
  19 #ifdef RTE_LIBRTE_IEEE1588
  20 #include "bnxt_hwrm.h"
  21 #endif
  22
  23 /*
  24  * RX Ring handling
  25  */
  26
  27 static inline struct rte_mbuf *__bnxt_alloc_rx_data(struct rte_mempool *mb)
  28 {
  29         struct rte_mbuf *data;
  30
  31         data = rte_mbuf_raw_alloc(mb);
  32
  33         return data;
  34 }
  35
  36 static inline int bnxt_alloc_rx_data(struct bnxt_rx_queue *rxq,
  37                                      struct bnxt_rx_ring_info *rxr,
  38                                      uint16_t prod)
  39 {
  40         struct rx_prod_pkt_bd *rxbd = &rxr->rx_desc_ring[prod];
  41         struct bnxt_sw_rx_bd *rx_buf = &rxr->rx_buf_ring[prod];
  42         struct rte_mbuf *mbuf;
  43
  44         mbuf = __bnxt_alloc_rx_data(rxq->mb_pool);
  45         if (!mbuf) {
  46                 rte_atomic64_inc(&rxq->rx_mbuf_alloc_fail);
  47                 return -ENOMEM;
  48         }
  49
  50         rx_buf->mbuf = mbuf;
  51         mbuf->data_off = RTE_PKTMBUF_HEADROOM;
  52
  53         rxbd->address = rte_cpu_to_le_64(rte_mbuf_data_iova_default(mbuf));
  54
  55         return 0;
  56 }
  57
  58 static inline int bnxt_alloc_ag_data(struct bnxt_rx_queue *rxq,
  59                                      struct bnxt_rx_ring_info *rxr,
  60                                      uint16_t prod)
  61 {
  62         struct rx_prod_pkt_bd *rxbd = &rxr->ag_desc_ring[prod];
  63         struct bnxt_sw_rx_bd *rx_buf = &rxr->ag_buf_ring[prod];
  64         struct rte_mbuf *mbuf;
  65
  66         if (rxbd == NULL) {
  67                 PMD_DRV_LOG(ERR, "Jumbo Frame. rxbd is NULL\n");
  68                 return -EINVAL;
  69         }
  70
  71         if (rx_buf == NULL) {
  72                 PMD_DRV_LOG(ERR, "Jumbo Frame. rx_buf is NULL\n");
  73                 return -EINVAL;
  74         }
  75
  76         mbuf = __bnxt_alloc_rx_data(rxq->mb_pool);
  77         if (!mbuf) {
  78                 rte_atomic64_inc(&rxq->rx_mbuf_alloc_fail);
  79                 return -ENOMEM;
  80         }
  81
  82         rx_buf->mbuf = mbuf;
  83         mbuf->data_off = RTE_PKTMBUF_HEADROOM;
  84
  85         rxbd->address = rte_cpu_to_le_64(rte_mbuf_data_iova_default(mbuf));
  86
  87         return 0;
  88 }
  89
  90 static inline void bnxt_reuse_rx_mbuf(struct bnxt_rx_ring_info *rxr,
  91                                struct rte_mbuf *mbuf)
  92 {
  93         uint16_t prod = RING_NEXT(rxr->rx_ring_struct, rxr->rx_prod);
  94         struct bnxt_sw_rx_bd *prod_rx_buf;
  95         struct rx_prod_pkt_bd *prod_bd;
  96
  97         prod_rx_buf = &rxr->rx_buf_ring[prod];
  98
  99         RTE_ASSERT(prod_rx_buf->mbuf == NULL);
 100         RTE_ASSERT(mbuf != NULL);
 101
 102         prod_rx_buf->mbuf = mbuf;
 103
 104         prod_bd = &rxr->rx_desc_ring[prod];
 105
 106         prod_bd->address = rte_cpu_to_le_64(rte_mbuf_data_iova_default(mbuf));
 107
 108         rxr->rx_prod = prod;
 109 }
 110
 111 static inline
 112 struct rte_mbuf *bnxt_consume_rx_buf(struct bnxt_rx_ring_info *rxr,
 113                                      uint16_t cons)
 114 {
 115         struct bnxt_sw_rx_bd *cons_rx_buf;
 116         struct rte_mbuf *mbuf;
 117
 118         cons_rx_buf = &rxr->rx_buf_ring[cons];
 119         RTE_ASSERT(cons_rx_buf->mbuf != NULL);
 120         mbuf = cons_rx_buf->mbuf;
 121         cons_rx_buf->mbuf = NULL;
 122         return mbuf;
 123 }
 124
 125 static void bnxt_tpa_start(struct bnxt_rx_queue *rxq,
 126                            struct rx_tpa_start_cmpl *tpa_start,
 127                            struct rx_tpa_start_cmpl_hi *tpa_start1)
 128 {
 129         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 130         uint16_t agg_id;
 131         uint16_t data_cons;
 132         struct bnxt_tpa_info *tpa_info;
 133         struct rte_mbuf *mbuf;
 134
 135         agg_id = bnxt_tpa_start_agg_id(rxq->bp, tpa_start);
 136
 137         data_cons = tpa_start->opaque;
 138         tpa_info = &rxr->tpa_info[agg_id];
 139
 140         mbuf = bnxt_consume_rx_buf(rxr, data_cons);
 141
 142         bnxt_reuse_rx_mbuf(rxr, tpa_info->mbuf);
 143
 144         tpa_info->agg_count = 0;
 145         tpa_info->mbuf = mbuf;
 146         tpa_info->len = rte_le_to_cpu_32(tpa_start->len);
 147
 148         mbuf->nb_segs = 1;
 149         mbuf->next = NULL;
 150         mbuf->pkt_len = rte_le_to_cpu_32(tpa_start->len);
 151         mbuf->data_len = mbuf->pkt_len;
 152         mbuf->port = rxq->port_id;
 153         mbuf->ol_flags = PKT_RX_LRO;
 154         if (likely(tpa_start->flags_type &
 155                    rte_cpu_to_le_32(RX_TPA_START_CMPL_FLAGS_RSS_VALID))) {
 156                 mbuf->hash.rss = rte_le_to_cpu_32(tpa_start->rss_hash);
 157                 mbuf->ol_flags |= PKT_RX_RSS_HASH;
 158         } else {
 159                 mbuf->hash.fdir.id = rte_le_to_cpu_16(tpa_start1->cfa_code);
 160                 mbuf->ol_flags |= PKT_RX_FDIR | PKT_RX_FDIR_ID;
 161         }
 162         if (tpa_start1->flags2 &
 163             rte_cpu_to_le_32(RX_TPA_START_CMPL_FLAGS2_META_FORMAT_VLAN)) {
 164                 mbuf->vlan_tci = rte_le_to_cpu_32(tpa_start1->metadata);
 165                 mbuf->ol_flags |= PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
 166         }
 167         if (likely(tpa_start1->flags2 &
 168                    rte_cpu_to_le_32(RX_TPA_START_CMPL_FLAGS2_L4_CS_CALC)))
 169                 mbuf->ol_flags |= PKT_RX_L4_CKSUM_GOOD;
 170
 171         /* recycle next mbuf */
 172         data_cons = RING_NEXT(rxr->rx_ring_struct, data_cons);
 173         bnxt_reuse_rx_mbuf(rxr, bnxt_consume_rx_buf(rxr, data_cons));
 174 }
 175
 176 static int bnxt_agg_bufs_valid(struct bnxt_cp_ring_info *cpr,
 177                 uint8_t agg_bufs, uint32_t raw_cp_cons)
 178 {
 179         uint16_t last_cp_cons;
 180         struct rx_pkt_cmpl *agg_cmpl;
 181
 182         raw_cp_cons = ADV_RAW_CMP(raw_cp_cons, agg_bufs);
 183         last_cp_cons = RING_CMP(cpr->cp_ring_struct, raw_cp_cons);
 184         agg_cmpl = (struct rx_pkt_cmpl *)&cpr->cp_desc_ring[last_cp_cons];
 185         cpr->valid = FLIP_VALID(raw_cp_cons,
 186                                 cpr->cp_ring_struct->ring_mask,
 187                                 cpr->valid);
 188         return CMP_VALID(agg_cmpl, raw_cp_cons, cpr->cp_ring_struct);
 189 }
 190
 191 /* TPA consume agg buffer out of order, allocate connected data only */
 192 static int bnxt_prod_ag_mbuf(struct bnxt_rx_queue *rxq)
 193 {
 194         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 195         uint16_t next = RING_NEXT(rxr->ag_ring_struct, rxr->ag_prod);
 196
 197         /* TODO batch allocation for better performance */
 198         while (rte_bitmap_get(rxr->ag_bitmap, next)) {
 199                 if (unlikely(bnxt_alloc_ag_data(rxq, rxr, next))) {
 200                         PMD_DRV_LOG(ERR,
 201                                 "agg mbuf alloc failed: prod=0x%x\n", next);
 202                         break;
 203                 }
 204                 rte_bitmap_clear(rxr->ag_bitmap, next);
 205                 rxr->ag_prod = next;
 206                 next = RING_NEXT(rxr->ag_ring_struct, next);
 207         }
 208
 209         return 0;
 210 }
 211
 212 static int bnxt_rx_pages(struct bnxt_rx_queue *rxq,
 213                          struct rte_mbuf *mbuf, uint32_t *tmp_raw_cons,
 214                          uint8_t agg_buf, struct bnxt_tpa_info *tpa_info)
 215 {
 216         struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 217         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 218         int i;
 219         uint16_t cp_cons, ag_cons;
 220         struct rx_pkt_cmpl *rxcmp;
 221         struct rte_mbuf *last = mbuf;
 222         bool is_thor_tpa = tpa_info && BNXT_CHIP_THOR(rxq->bp);
 223
 224         for (i = 0; i < agg_buf; i++) {
 225                 struct bnxt_sw_rx_bd *ag_buf;
 226                 struct rte_mbuf *ag_mbuf;
 227
 228                 if (is_thor_tpa) {
 229                         rxcmp = (void *)&tpa_info->agg_arr[i];
 230                 } else {
 231                         *tmp_raw_cons = NEXT_RAW_CMP(*tmp_raw_cons);
 232                         cp_cons = RING_CMP(cpr->cp_ring_struct, *tmp_raw_cons);
 233                         rxcmp = (struct rx_pkt_cmpl *)
 234                                         &cpr->cp_desc_ring[cp_cons];
 235                 }
 236
 237 #ifdef BNXT_DEBUG
 238                 bnxt_dump_cmpl(cp_cons, rxcmp);
 239 #endif
 240
 241                 ag_cons = rxcmp->opaque;
 242                 RTE_ASSERT(ag_cons <= rxr->ag_ring_struct->ring_mask);
 243                 ag_buf = &rxr->ag_buf_ring[ag_cons];
 244                 ag_mbuf = ag_buf->mbuf;
 245                 RTE_ASSERT(ag_mbuf != NULL);
 246
 247                 ag_mbuf->data_len = rte_le_to_cpu_16(rxcmp->len);
 248
 249                 mbuf->nb_segs++;
 250                 mbuf->pkt_len += ag_mbuf->data_len;
 251
 252                 last->next = ag_mbuf;
 253                 last = ag_mbuf;
 254
 255                 ag_buf->mbuf = NULL;
 256
 257                 /*
 258                  * As aggregation buffer consumed out of order in TPA module,
 259                  * use bitmap to track freed slots to be allocated and notified
 260                  * to NIC
 261                  */
 262                 rte_bitmap_set(rxr->ag_bitmap, ag_cons);
 263         }
 264         bnxt_prod_ag_mbuf(rxq);
 265         return 0;
 266 }
 267
 268 static inline struct rte_mbuf *bnxt_tpa_end(
 269                 struct bnxt_rx_queue *rxq,
 270                 uint32_t *raw_cp_cons,
 271                 struct rx_tpa_end_cmpl *tpa_end,
 272                 struct rx_tpa_end_cmpl_hi *tpa_end1)
 273 {
 274         struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 275         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 276         uint16_t agg_id;
 277         struct rte_mbuf *mbuf;
 278         uint8_t agg_bufs;
 279         uint8_t payload_offset;
 280         struct bnxt_tpa_info *tpa_info;
 281
 282         if (BNXT_CHIP_THOR(rxq->bp)) {
 283                 struct rx_tpa_v2_end_cmpl *th_tpa_end;
 284                 struct rx_tpa_v2_end_cmpl_hi *th_tpa_end1;
 285
 286                 th_tpa_end = (void *)tpa_end;
 287                 th_tpa_end1 = (void *)tpa_end1;
 288                 agg_id = BNXT_TPA_END_AGG_ID_TH(th_tpa_end);
 289                 agg_bufs = BNXT_TPA_END_AGG_BUFS_TH(th_tpa_end1);
 290                 payload_offset = th_tpa_end1->payload_offset;
 291         } else {
 292                 agg_id = BNXT_TPA_END_AGG_ID(tpa_end);
 293                 agg_bufs = BNXT_TPA_END_AGG_BUFS(tpa_end);
 294                 if (!bnxt_agg_bufs_valid(cpr, agg_bufs, *raw_cp_cons))
 295                         return NULL;
 296                 payload_offset = tpa_end->payload_offset;
 297         }
 298
 299         tpa_info = &rxr->tpa_info[agg_id];
 300         mbuf = tpa_info->mbuf;
 301         RTE_ASSERT(mbuf != NULL);
 302
 303         rte_prefetch0(mbuf);
 304         if (agg_bufs) {
 305                 bnxt_rx_pages(rxq, mbuf, raw_cp_cons, agg_bufs, tpa_info);
 306         }
 307         mbuf->l4_len = payload_offset;
 308
 309         struct rte_mbuf *new_data = __bnxt_alloc_rx_data(rxq->mb_pool);
 310         RTE_ASSERT(new_data != NULL);
 311         if (!new_data) {
 312                 rte_atomic64_inc(&rxq->rx_mbuf_alloc_fail);
 313                 return NULL;
 314         }
 315         tpa_info->mbuf = new_data;
 316
 317         return mbuf;
 318 }
 319
 320 static uint32_t
 321 bnxt_parse_pkt_type(struct rx_pkt_cmpl *rxcmp, struct rx_pkt_cmpl_hi *rxcmp1)
 322 {
 323         uint32_t l3, pkt_type = 0;
 324         uint32_t t_ipcs = 0, ip6 = 0, vlan = 0;
 325         uint32_t flags_type;
 326
 327         vlan = !!(rxcmp1->flags2 &
 328                 rte_cpu_to_le_32(RX_PKT_CMPL_FLAGS2_META_FORMAT_VLAN));
 329         pkt_type |= vlan ? RTE_PTYPE_L2_ETHER_VLAN : RTE_PTYPE_L2_ETHER;
 330
 331         t_ipcs = !!(rxcmp1->flags2 &
 332                 rte_cpu_to_le_32(RX_PKT_CMPL_FLAGS2_T_IP_CS_CALC));
 333         ip6 = !!(rxcmp1->flags2 &
 334                  rte_cpu_to_le_32(RX_PKT_CMPL_FLAGS2_IP_TYPE));
 335
 336         flags_type = rxcmp->flags_type &
 337                 rte_cpu_to_le_32(RX_PKT_CMPL_FLAGS_ITYPE_MASK);
 338
 339         if (!t_ipcs && !ip6)
 340                 l3 = RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
 341         else if (!t_ipcs && ip6)
 342                 l3 = RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
 343         else if (t_ipcs && !ip6)
 344                 l3 = RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN;
 345         else
 346                 l3 = RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN;
 347
 348         switch (flags_type) {
 349         case RTE_LE32(RX_PKT_CMPL_FLAGS_ITYPE_ICMP):
 350                 if (!t_ipcs)
 351                         pkt_type |= l3 | RTE_PTYPE_L4_ICMP;
 352                 else
 353                         pkt_type |= l3 | RTE_PTYPE_INNER_L4_ICMP;
 354                 break;
 355
 356         case RTE_LE32(RX_PKT_CMPL_FLAGS_ITYPE_TCP):
 357                 if (!t_ipcs)
 358                         pkt_type |= l3 | RTE_PTYPE_L4_TCP;
 359                 else
 360                         pkt_type |= l3 | RTE_PTYPE_INNER_L4_TCP;
 361                 break;
 362
 363         case RTE_LE32(RX_PKT_CMPL_FLAGS_ITYPE_UDP):
 364                 if (!t_ipcs)
 365                         pkt_type |= l3 | RTE_PTYPE_L4_UDP;
 366                 else
 367                         pkt_type |= l3 | RTE_PTYPE_INNER_L4_UDP;
 368                 break;
 369
 370         case RTE_LE32(RX_PKT_CMPL_FLAGS_ITYPE_IP):
 371                 pkt_type |= l3;
 372                 break;
 373         }
 374
 375         return pkt_type;
 376 }
 377
 378 #ifdef RTE_LIBRTE_IEEE1588
 379 static void
 380 bnxt_get_rx_ts_thor(struct bnxt *bp, uint32_t rx_ts_cmpl)
 381 {
 382         uint64_t systime_cycles = 0;
 383
 384         if (!BNXT_CHIP_THOR(bp))
 385                 return;
 386
 387         /* On Thor, Rx timestamps are provided directly in the
 388          * Rx completion records to the driver. Only 32 bits of
 389          * the timestamp is present in the completion. Driver needs
 390          * to read the current 48 bit free running timer using the
 391          * HWRM_PORT_TS_QUERY command and combine the upper 16 bits
 392          * from the HWRM response with the lower 32 bits in the
 393          * Rx completion to produce the 48 bit timestamp for the Rx packet
 394          */
 395         bnxt_hwrm_port_ts_query(bp, BNXT_PTP_FLAGS_CURRENT_TIME,
 396                                 &systime_cycles);
 397         bp->ptp_cfg->rx_timestamp = (systime_cycles & 0xFFFF00000000);
 398         bp->ptp_cfg->rx_timestamp |= rx_ts_cmpl;
 399 }
 400 #endif
 401
 402 static int bnxt_rx_pkt(struct rte_mbuf **rx_pkt,
 403                             struct bnxt_rx_queue *rxq, uint32_t *raw_cons)
 404 {
 405         struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 406         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 407         struct rx_pkt_cmpl *rxcmp;
 408         struct rx_pkt_cmpl_hi *rxcmp1;
 409         uint32_t tmp_raw_cons = *raw_cons;
 410         uint16_t cons, prod, cp_cons =
 411             RING_CMP(cpr->cp_ring_struct, tmp_raw_cons);
 412         struct rte_mbuf *mbuf;
 413         int rc = 0;
 414         uint8_t agg_buf = 0;
 415         uint16_t cmp_type;
 416         uint32_t flags2_f = 0;
 417         uint16_t flags_type;
 418
 419         rxcmp = (struct rx_pkt_cmpl *)
 420             &cpr->cp_desc_ring[cp_cons];
 421
 422         cmp_type = CMP_TYPE(rxcmp);
 423
 424         if (cmp_type == RX_TPA_V2_ABUF_CMPL_TYPE_RX_TPA_AGG) {
 425                 struct rx_tpa_v2_abuf_cmpl *rx_agg = (void *)rxcmp;
 426                 uint16_t agg_id = rte_cpu_to_le_16(rx_agg->agg_id);
 427                 struct bnxt_tpa_info *tpa_info;
 428
 429                 tpa_info = &rxr->tpa_info[agg_id];
 430                 RTE_ASSERT(tpa_info->agg_count < 16);
 431                 tpa_info->agg_arr[tpa_info->agg_count++] = *rx_agg;
 432                 rc = -EINVAL; /* Continue w/o new mbuf */
 433                 goto next_rx;
 434         }
 435
 436         tmp_raw_cons = NEXT_RAW_CMP(tmp_raw_cons);
 437         cp_cons = RING_CMP(cpr->cp_ring_struct, tmp_raw_cons);
 438         rxcmp1 = (struct rx_pkt_cmpl_hi *)&cpr->cp_desc_ring[cp_cons];
 439
 440         if (!CMP_VALID(rxcmp1, tmp_raw_cons, cpr->cp_ring_struct))
 441                 return -EBUSY;
 442
 443         cpr->valid = FLIP_VALID(cp_cons,
 444                                 cpr->cp_ring_struct->ring_mask,
 445                                 cpr->valid);
 446
 447         if (cmp_type == RX_TPA_START_CMPL_TYPE_RX_TPA_START) {
 448                 bnxt_tpa_start(rxq, (struct rx_tpa_start_cmpl *)rxcmp,
 449                                (struct rx_tpa_start_cmpl_hi *)rxcmp1);
 450                 rc = -EINVAL; /* Continue w/o new mbuf */
 451                 goto next_rx;
 452         } else if (cmp_type == RX_TPA_END_CMPL_TYPE_RX_TPA_END) {
 453                 mbuf = bnxt_tpa_end(rxq, &tmp_raw_cons,
 454                                    (struct rx_tpa_end_cmpl *)rxcmp,
 455                                    (struct rx_tpa_end_cmpl_hi *)rxcmp1);
 456                 if (unlikely(!mbuf))
 457                         return -EBUSY;
 458                 *rx_pkt = mbuf;
 459                 goto next_rx;
 460         } else if (cmp_type != 0x11) {
 461                 rc = -EINVAL;
 462                 goto next_rx;
 463         }
 464
 465         agg_buf = (rxcmp->agg_bufs_v1 & RX_PKT_CMPL_AGG_BUFS_MASK)
 466                         >> RX_PKT_CMPL_AGG_BUFS_SFT;
 467         if (agg_buf && !bnxt_agg_bufs_valid(cpr, agg_buf, tmp_raw_cons))
 468                 return -EBUSY;
 469
 470         prod = rxr->rx_prod;
 471
 472         cons = rxcmp->opaque;
 473         mbuf = bnxt_consume_rx_buf(rxr, cons);
 474         if (mbuf == NULL)
 475                 return -EBUSY;
 476
 477         rte_prefetch0(mbuf);
 478
 479         mbuf->data_off = RTE_PKTMBUF_HEADROOM;
 480         mbuf->nb_segs = 1;
 481         mbuf->next = NULL;
 482         mbuf->pkt_len = rxcmp->len;
 483         mbuf->data_len = mbuf->pkt_len;
 484         mbuf->port = rxq->port_id;
 485         mbuf->ol_flags = 0;
 486
 487         flags_type = rte_le_to_cpu_16(rxcmp->flags_type);
 488         if (flags_type & RX_PKT_CMPL_FLAGS_RSS_VALID) {
 489                 mbuf->hash.rss = rxcmp->rss_hash;
 490                 mbuf->ol_flags |= PKT_RX_RSS_HASH;
 491         } else {
 492                 mbuf->hash.fdir.id = rxcmp1->cfa_code;
 493                 mbuf->ol_flags |= PKT_RX_FDIR | PKT_RX_FDIR_ID;
 494         }
 495 #ifdef RTE_LIBRTE_IEEE1588
 496         if (unlikely((flags_type & RX_PKT_CMPL_FLAGS_MASK) ==
 497                      RX_PKT_CMPL_FLAGS_ITYPE_PTP_W_TIMESTAMP)) {
 498                 mbuf->ol_flags |= PKT_RX_IEEE1588_PTP | PKT_RX_IEEE1588_TMST;
 499                 bnxt_get_rx_ts_thor(rxq->bp, rxcmp1->reorder);
 500         }
 501 #endif
 502         if (agg_buf)
 503                 bnxt_rx_pages(rxq, mbuf, &tmp_raw_cons, agg_buf, NULL);
 504
 505         if (rxcmp1->flags2 & RX_PKT_CMPL_FLAGS2_META_FORMAT_VLAN) {
 506                 mbuf->vlan_tci = rxcmp1->metadata &
 507                         (RX_PKT_CMPL_METADATA_VID_MASK |
 508                         RX_PKT_CMPL_METADATA_DE |
 509                         RX_PKT_CMPL_METADATA_PRI_MASK);
 510                 mbuf->ol_flags |= PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
 511         }
 512
 513         flags2_f = flags2_0xf(rxcmp1);
 514         /* IP Checksum */
 515         if (unlikely(((IS_IP_NONTUNNEL_PKT(flags2_f)) &&
 516                       (RX_CMP_IP_CS_ERROR(rxcmp1))) ||
 517                      (IS_IP_TUNNEL_PKT(flags2_f) &&
 518                       (RX_CMP_IP_OUTER_CS_ERROR(rxcmp1))))) {
 519                 mbuf->ol_flags |= PKT_RX_IP_CKSUM_BAD;
 520         } else if (unlikely(RX_CMP_IP_CS_UNKNOWN(rxcmp1))) {
 521                 mbuf->ol_flags |= PKT_RX_IP_CKSUM_UNKNOWN;
 522         } else {
 523                 mbuf->ol_flags |= PKT_RX_IP_CKSUM_GOOD;
 524         }
 525
 526         /* L4 Checksum */
 527         if (likely(IS_L4_NONTUNNEL_PKT(flags2_f))) {
 528                 if (unlikely(RX_CMP_L4_INNER_CS_ERR2(rxcmp1)))
 529                         mbuf->ol_flags |= PKT_RX_L4_CKSUM_BAD;
 530                 else
 531                         mbuf->ol_flags |= PKT_RX_L4_CKSUM_GOOD;
 532         } else if (IS_L4_TUNNEL_PKT(flags2_f)) {
 533                 if (unlikely(RX_CMP_L4_INNER_CS_ERR2(rxcmp1)))
 534                         mbuf->ol_flags |= PKT_RX_L4_CKSUM_BAD;
 535                 else
 536                         mbuf->ol_flags |= PKT_RX_L4_CKSUM_GOOD;
 537                 if (unlikely(RX_CMP_L4_OUTER_CS_ERR2(rxcmp1))) {
 538                         mbuf->ol_flags |= PKT_RX_OUTER_L4_CKSUM_BAD;
 539                 } else if (unlikely(IS_L4_TUNNEL_PKT_ONLY_INNER_L4_CS
 540                                     (flags2_f))) {
 541                         mbuf->ol_flags |= PKT_RX_OUTER_L4_CKSUM_UNKNOWN;
 542                 } else {
 543                         mbuf->ol_flags |= PKT_RX_OUTER_L4_CKSUM_GOOD;
 544                 }
 545         } else if (unlikely(RX_CMP_L4_CS_UNKNOWN(rxcmp1))) {
 546                 mbuf->ol_flags |= PKT_RX_L4_CKSUM_UNKNOWN;
 547         }
 548
 549         mbuf->packet_type = bnxt_parse_pkt_type(rxcmp, rxcmp1);
 550
 551 #ifdef BNXT_DEBUG
 552         if (rxcmp1->errors_v2 & RX_CMP_L2_ERRORS) {
 553                 /* Re-install the mbuf back to the rx ring */
 554                 bnxt_reuse_rx_mbuf(rxr, cons, mbuf);
 555
 556                 rc = -EIO;
 557                 goto next_rx;
 558         }
 559 #endif
 560         /*
 561          * TODO: Redesign this....
 562          * If the allocation fails, the packet does not get received.
 563          * Simply returning this will result in slowly falling behind
 564          * on the producer ring buffers.
 565          * Instead, "filling up" the producer just before ringing the
 566          * doorbell could be a better solution since it will let the
 567          * producer ring starve until memory is available again pushing
 568          * the drops into hardware and getting them out of the driver
 569          * allowing recovery to a full producer ring.
 570          *
 571          * This could also help with cache usage by preventing per-packet
 572          * calls in favour of a tight loop with the same function being called
 573          * in it.
 574          */
 575         prod = RING_NEXT(rxr->rx_ring_struct, prod);
 576         if (bnxt_alloc_rx_data(rxq, rxr, prod)) {
 577                 PMD_DRV_LOG(ERR, "mbuf alloc failed with prod=0x%x\n", prod);
 578                 rc = -ENOMEM;
 579                 goto rx;
 580         }
 581         rxr->rx_prod = prod;
 582         /*
 583          * All MBUFs are allocated with the same size under DPDK,
 584          * no optimization for rx_copy_thresh
 585          */
 586 rx:
 587         *rx_pkt = mbuf;
 588
 589 next_rx:
 590
 591         *raw_cons = tmp_raw_cons;
 592
 593         return rc;
 594 }
 595
 596 uint16_t bnxt_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 597                                uint16_t nb_pkts)
 598 {
 599         struct bnxt_rx_queue *rxq = rx_queue;
 600         struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 601         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 602         uint32_t raw_cons = cpr->cp_raw_cons;
 603         uint32_t cons;
 604         int nb_rx_pkts = 0;
 605         struct rx_pkt_cmpl *rxcmp;
 606         uint16_t prod = rxr->rx_prod;
 607         uint16_t ag_prod = rxr->ag_prod;
 608         int rc = 0;
 609         bool evt = false;
 610
 611         if (unlikely(is_bnxt_in_error(rxq->bp)))
 612                 return 0;
 613
 614         /* If Rx Q was stopped return */
 615         if (unlikely(!rxq->rx_started ||
 616                      !rte_spinlock_trylock(&rxq->lock)))
 617                 return 0;
 618
 619         /* Handle RX burst request */
 620         while (1) {
 621                 cons = RING_CMP(cpr->cp_ring_struct, raw_cons);
 622                 rte_prefetch0(&cpr->cp_desc_ring[cons]);
 623                 rxcmp = (struct rx_pkt_cmpl *)&cpr->cp_desc_ring[cons];
 624
 625                 if (!CMP_VALID(rxcmp, raw_cons, cpr->cp_ring_struct))
 626                         break;
 627                 cpr->valid = FLIP_VALID(cons,
 628                                         cpr->cp_ring_struct->ring_mask,
 629                                         cpr->valid);
 630
 631                 /* TODO: Avoid magic numbers... */
 632                 if ((CMP_TYPE(rxcmp) & 0x30) == 0x10) {
 633                         rc = bnxt_rx_pkt(&rx_pkts[nb_rx_pkts], rxq, &raw_cons);
 634                         if (likely(!rc) || rc == -ENOMEM)
 635                                 nb_rx_pkts++;
 636                         if (rc == -EBUSY)       /* partial completion */
 637                                 break;
 638                 } else if (!BNXT_NUM_ASYNC_CPR(rxq->bp)) {
 639                         evt =
 640                         bnxt_event_hwrm_resp_handler(rxq->bp,
 641                                                      (struct cmpl_base *)rxcmp);
 642                 }
 643
 644                 raw_cons = NEXT_RAW_CMP(raw_cons);
 645                 if (nb_rx_pkts == nb_pkts || evt)
 646                         break;
 647                 /* Post some Rx buf early in case of larger burst processing */
 648                 if (nb_rx_pkts == BNXT_RX_POST_THRESH)
 649                         bnxt_db_write(&rxr->rx_db, rxr->rx_prod);
 650         }
 651
 652         cpr->cp_raw_cons = raw_cons;
 653         if (!nb_rx_pkts && !evt) {
 654                 /*
 655                  * For PMD, there is no need to keep on pushing to REARM
 656                  * the doorbell if there are no new completions
 657                  */
 658                 goto done;
 659         }
 660
 661         if (prod != rxr->rx_prod)
 662                 bnxt_db_write(&rxr->rx_db, rxr->rx_prod);
 663
 664         /* Ring the AGG ring DB */
 665         if (ag_prod != rxr->ag_prod)
 666                 bnxt_db_write(&rxr->ag_db, rxr->ag_prod);
 667
 668         bnxt_db_cq(cpr);
 669
 670         /* Attempt to alloc Rx buf in case of a previous allocation failure. */
 671         if (rc == -ENOMEM) {
 672                 int i;
 673
 674                 for (i = prod; i <= nb_rx_pkts;
 675                         i = RING_NEXT(rxr->rx_ring_struct, i)) {
 676                         struct bnxt_sw_rx_bd *rx_buf = &rxr->rx_buf_ring[i];
 677
 678                         /* Buffer already allocated for this index. */
 679                         if (rx_buf->mbuf != NULL)
 680                                 continue;
 681
 682                         /* This slot is empty. Alloc buffer for Rx */
 683                         if (!bnxt_alloc_rx_data(rxq, rxr, i)) {
 684                                 rxr->rx_prod = i;
 685                                 bnxt_db_write(&rxr->rx_db, rxr->rx_prod);
 686                         } else {
 687                                 PMD_DRV_LOG(ERR, "Alloc  mbuf failed\n");
 688                                 break;
 689                         }
 690                 }
 691         }
 692
 693 done:
 694         rte_spinlock_unlock(&rxq->lock);
 695
 696         return nb_rx_pkts;
 697 }
 698
 699 /*
 700  * Dummy DPDK callback for RX.
 701  *
 702  * This function is used to temporarily replace the real callback during
 703  * unsafe control operations on the queue, or in case of error.
 704  */
 705 uint16_t
 706 bnxt_dummy_recv_pkts(void *rx_queue __rte_unused,
 707                      struct rte_mbuf **rx_pkts __rte_unused,
 708                      uint16_t nb_pkts __rte_unused)
 709 {
 710         return 0;
 711 }
 712
 713 void bnxt_free_rx_rings(struct bnxt *bp)
 714 {
 715         int i;
 716         struct bnxt_rx_queue *rxq;
 717
 718         if (!bp->rx_queues)
 719                 return;
 720
 721         for (i = 0; i < (int)bp->rx_nr_rings; i++) {
 722                 rxq = bp->rx_queues[i];
 723                 if (!rxq)
 724                         continue;
 725
 726                 bnxt_free_ring(rxq->rx_ring->rx_ring_struct);
 727                 rte_free(rxq->rx_ring->rx_ring_struct);
 728
 729                 /* Free the Aggregator ring */
 730                 bnxt_free_ring(rxq->rx_ring->ag_ring_struct);
 731                 rte_free(rxq->rx_ring->ag_ring_struct);
 732                 rxq->rx_ring->ag_ring_struct = NULL;
 733
 734                 rte_free(rxq->rx_ring);
 735
 736                 bnxt_free_ring(rxq->cp_ring->cp_ring_struct);
 737                 rte_free(rxq->cp_ring->cp_ring_struct);
 738                 rte_free(rxq->cp_ring);
 739
 740                 rte_free(rxq);
 741                 bp->rx_queues[i] = NULL;
 742         }
 743 }
 744
 745 int bnxt_init_rx_ring_struct(struct bnxt_rx_queue *rxq, unsigned int socket_id)
 746 {
 747         struct bnxt_cp_ring_info *cpr;
 748         struct bnxt_rx_ring_info *rxr;
 749         struct bnxt_ring *ring;
 750
 751         rxq->rx_buf_size = BNXT_MAX_PKT_LEN + sizeof(struct rte_mbuf);
 752
 753         rxr = rte_zmalloc_socket("bnxt_rx_ring",
 754                                  sizeof(struct bnxt_rx_ring_info),
 755                                  RTE_CACHE_LINE_SIZE, socket_id);
 756         if (rxr == NULL)
 757                 return -ENOMEM;
 758         rxq->rx_ring = rxr;
 759
 760         ring = rte_zmalloc_socket("bnxt_rx_ring_struct",
 761                                    sizeof(struct bnxt_ring),
 762                                    RTE_CACHE_LINE_SIZE, socket_id);
 763         if (ring == NULL)
 764                 return -ENOMEM;
 765         rxr->rx_ring_struct = ring;
 766         ring->ring_size = rte_align32pow2(rxq->nb_rx_desc);
 767         ring->ring_mask = ring->ring_size - 1;
 768         ring->bd = (void *)rxr->rx_desc_ring;
 769         ring->bd_dma = rxr->rx_desc_mapping;
 770         ring->vmem_size = ring->ring_size * sizeof(struct bnxt_sw_rx_bd);
 771         ring->vmem = (void **)&rxr->rx_buf_ring;
 772
 773         cpr = rte_zmalloc_socket("bnxt_rx_ring",
 774                                  sizeof(struct bnxt_cp_ring_info),
 775                                  RTE_CACHE_LINE_SIZE, socket_id);
 776         if (cpr == NULL)
 777                 return -ENOMEM;
 778         rxq->cp_ring = cpr;
 779
 780         ring = rte_zmalloc_socket("bnxt_rx_ring_struct",
 781                                    sizeof(struct bnxt_ring),
 782                                    RTE_CACHE_LINE_SIZE, socket_id);
 783         if (ring == NULL)
 784                 return -ENOMEM;
 785         cpr->cp_ring_struct = ring;
 786         ring->ring_size = rte_align32pow2(rxr->rx_ring_struct->ring_size *
 787                                           (2 + AGG_RING_SIZE_FACTOR));
 788         ring->ring_mask = ring->ring_size - 1;
 789         ring->bd = (void *)cpr->cp_desc_ring;
 790         ring->bd_dma = cpr->cp_desc_mapping;
 791         ring->vmem_size = 0;
 792         ring->vmem = NULL;
 793
 794         /* Allocate Aggregator rings */
 795         ring = rte_zmalloc_socket("bnxt_rx_ring_struct",
 796                                    sizeof(struct bnxt_ring),
 797                                    RTE_CACHE_LINE_SIZE, socket_id);
 798         if (ring == NULL)
 799                 return -ENOMEM;
 800         rxr->ag_ring_struct = ring;
 801         ring->ring_size = rte_align32pow2(rxq->nb_rx_desc *
 802                                           AGG_RING_SIZE_FACTOR);
 803         ring->ring_mask = ring->ring_size - 1;
 804         ring->bd = (void *)rxr->ag_desc_ring;
 805         ring->bd_dma = rxr->ag_desc_mapping;
 806         ring->vmem_size = ring->ring_size * sizeof(struct bnxt_sw_rx_bd);
 807         ring->vmem = (void **)&rxr->ag_buf_ring;
 808
 809         return 0;
 810 }
 811
 812 static void bnxt_init_rxbds(struct bnxt_ring *ring, uint32_t type,
 813                             uint16_t len)
 814 {
 815         uint32_t j;
 816         struct rx_prod_pkt_bd *rx_bd_ring = (struct rx_prod_pkt_bd *)ring->bd;
 817
 818         if (!rx_bd_ring)
 819                 return;
 820         for (j = 0; j < ring->ring_size; j++) {
 821                 rx_bd_ring[j].flags_type = rte_cpu_to_le_16(type);
 822                 rx_bd_ring[j].len = rte_cpu_to_le_16(len);
 823                 rx_bd_ring[j].opaque = j;
 824         }
 825 }
 826
 827 int bnxt_init_one_rx_ring(struct bnxt_rx_queue *rxq)
 828 {
 829         struct bnxt_rx_ring_info *rxr;
 830         struct bnxt_ring *ring;
 831         uint32_t prod, type;
 832         unsigned int i;
 833         uint16_t size;
 834
 835         size = rte_pktmbuf_data_room_size(rxq->mb_pool) - RTE_PKTMBUF_HEADROOM;
 836         size = RTE_MIN(BNXT_MAX_PKT_LEN, size);
 837
 838         type = RX_PROD_PKT_BD_TYPE_RX_PROD_PKT | RX_PROD_PKT_BD_FLAGS_EOP_PAD;
 839
 840         rxr = rxq->rx_ring;
 841         ring = rxr->rx_ring_struct;
 842         bnxt_init_rxbds(ring, type, size);
 843
 844         prod = rxr->rx_prod;
 845         for (i = 0; i < ring->ring_size; i++) {
 846                 if (bnxt_alloc_rx_data(rxq, rxr, prod) != 0) {
 847                         PMD_DRV_LOG(WARNING,
 848                                 "init'ed rx ring %d with %d/%d mbufs only\n",
 849                                 rxq->queue_id, i, ring->ring_size);
 850                         break;
 851                 }
 852                 rxr->rx_prod = prod;
 853                 prod = RING_NEXT(rxr->rx_ring_struct, prod);
 854         }
 855
 856         ring = rxr->ag_ring_struct;
 857         type = RX_PROD_AGG_BD_TYPE_RX_PROD_AGG;
 858         bnxt_init_rxbds(ring, type, size);
 859         prod = rxr->ag_prod;
 860
 861         for (i = 0; i < ring->ring_size; i++) {
 862                 if (bnxt_alloc_ag_data(rxq, rxr, prod) != 0) {
 863                         PMD_DRV_LOG(WARNING,
 864                         "init'ed AG ring %d with %d/%d mbufs only\n",
 865                         rxq->queue_id, i, ring->ring_size);
 866                         break;
 867                 }
 868                 rxr->ag_prod = prod;
 869                 prod = RING_NEXT(rxr->ag_ring_struct, prod);
 870         }
 871         PMD_DRV_LOG(DEBUG, "AGG Done!\n");
 872
 873         if (rxr->tpa_info) {
 874                 unsigned int max_aggs = BNXT_TPA_MAX_AGGS(rxq->bp);
 875
 876                 for (i = 0; i < max_aggs; i++) {
 877                         rxr->tpa_info[i].mbuf =
 878                                 __bnxt_alloc_rx_data(rxq->mb_pool);
 879                         if (!rxr->tpa_info[i].mbuf) {
 880                                 rte_atomic64_inc(&rxq->rx_mbuf_alloc_fail);
 881                                 return -ENOMEM;
 882                         }
 883                 }
 884         }
 885         PMD_DRV_LOG(DEBUG, "TPA alloc Done!\n");
 886
 887         return 0;
 888 }