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_cpr.h"
  16 #include "bnxt_ring.h"
  17 #include "bnxt_rxr.h"
  18 #include "bnxt_rxq.h"
  19 #include "hsi_struct_def_dpdk.h"
  20
  21 /*
  22  * RX Ring handling
  23  */
  24
  25 static inline struct rte_mbuf *__bnxt_alloc_rx_data(struct rte_mempool *mb)
  26 {
  27         struct rte_mbuf *data;
  28
  29         data = rte_mbuf_raw_alloc(mb);
  30
  31         return data;
  32 }
  33
  34 static inline int bnxt_alloc_rx_data(struct bnxt_rx_queue *rxq,
  35                                      struct bnxt_rx_ring_info *rxr,
  36                                      uint16_t prod)
  37 {
  38         struct rx_prod_pkt_bd *rxbd = &rxr->rx_desc_ring[prod];
  39         struct bnxt_sw_rx_bd *rx_buf = &rxr->rx_buf_ring[prod];
  40         struct rte_mbuf *mbuf;
  41
  42         mbuf = __bnxt_alloc_rx_data(rxq->mb_pool);
  43         if (!mbuf) {
  44                 rte_atomic64_inc(&rxq->rx_mbuf_alloc_fail);
  45                 return -ENOMEM;
  46         }
  47
  48         rx_buf->mbuf = mbuf;
  49         mbuf->data_off = RTE_PKTMBUF_HEADROOM;
  50
  51         rxbd->address = rte_cpu_to_le_64(rte_mbuf_data_iova_default(mbuf));
  52
  53         return 0;
  54 }
  55
  56 static inline int bnxt_alloc_ag_data(struct bnxt_rx_queue *rxq,
  57                                      struct bnxt_rx_ring_info *rxr,
  58                                      uint16_t prod)
  59 {
  60         struct rx_prod_pkt_bd *rxbd = &rxr->ag_desc_ring[prod];
  61         struct bnxt_sw_rx_bd *rx_buf = &rxr->ag_buf_ring[prod];
  62         struct rte_mbuf *mbuf;
  63
  64         mbuf = __bnxt_alloc_rx_data(rxq->mb_pool);
  65         if (!mbuf) {
  66                 rte_atomic64_inc(&rxq->rx_mbuf_alloc_fail);
  67                 return -ENOMEM;
  68         }
  69
  70         if (rxbd == NULL)
  71                 PMD_DRV_LOG(ERR, "Jumbo Frame. rxbd is NULL\n");
  72         if (rx_buf == NULL)
  73                 PMD_DRV_LOG(ERR, "Jumbo Frame. rx_buf is NULL\n");
  74
  75
  76         rx_buf->mbuf = mbuf;
  77         mbuf->data_off = RTE_PKTMBUF_HEADROOM;
  78
  79         rxbd->address = rte_cpu_to_le_64(rte_mbuf_data_iova_default(mbuf));
  80
  81         return 0;
  82 }
  83
  84 static inline void bnxt_reuse_rx_mbuf(struct bnxt_rx_ring_info *rxr,
  85                                struct rte_mbuf *mbuf)
  86 {
  87         uint16_t prod = RING_NEXT(rxr->rx_ring_struct, rxr->rx_prod);
  88         struct bnxt_sw_rx_bd *prod_rx_buf;
  89         struct rx_prod_pkt_bd *prod_bd;
  90
  91         prod_rx_buf = &rxr->rx_buf_ring[prod];
  92
  93         RTE_ASSERT(prod_rx_buf->mbuf == NULL);
  94         RTE_ASSERT(mbuf != NULL);
  95
  96         prod_rx_buf->mbuf = mbuf;
  97
  98         prod_bd = &rxr->rx_desc_ring[prod];
  99
 100         prod_bd->address = rte_cpu_to_le_64(rte_mbuf_data_iova_default(mbuf));
 101
 102         rxr->rx_prod = prod;
 103 }
 104
 105 static inline
 106 struct rte_mbuf *bnxt_consume_rx_buf(struct bnxt_rx_ring_info *rxr,
 107                                      uint16_t cons)
 108 {
 109         struct bnxt_sw_rx_bd *cons_rx_buf;
 110         struct rte_mbuf *mbuf;
 111
 112         cons_rx_buf = &rxr->rx_buf_ring[cons];
 113         RTE_ASSERT(cons_rx_buf->mbuf != NULL);
 114         mbuf = cons_rx_buf->mbuf;
 115         cons_rx_buf->mbuf = NULL;
 116         return mbuf;
 117 }
 118
 119 static void bnxt_tpa_start(struct bnxt_rx_queue *rxq,
 120                            struct rx_tpa_start_cmpl *tpa_start,
 121                            struct rx_tpa_start_cmpl_hi *tpa_start1)
 122 {
 123         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 124         uint8_t agg_id = rte_le_to_cpu_32(tpa_start->agg_id &
 125                 RX_TPA_START_CMPL_AGG_ID_MASK) >> RX_TPA_START_CMPL_AGG_ID_SFT;
 126         uint16_t data_cons;
 127         struct bnxt_tpa_info *tpa_info;
 128         struct rte_mbuf *mbuf;
 129
 130         data_cons = tpa_start->opaque;
 131         tpa_info = &rxr->tpa_info[agg_id];
 132
 133         mbuf = bnxt_consume_rx_buf(rxr, data_cons);
 134
 135         bnxt_reuse_rx_mbuf(rxr, tpa_info->mbuf);
 136
 137         tpa_info->mbuf = mbuf;
 138         tpa_info->len = rte_le_to_cpu_32(tpa_start->len);
 139
 140         mbuf->nb_segs = 1;
 141         mbuf->next = NULL;
 142         mbuf->pkt_len = rte_le_to_cpu_32(tpa_start->len);
 143         mbuf->data_len = mbuf->pkt_len;
 144         mbuf->port = rxq->port_id;
 145         mbuf->ol_flags = PKT_RX_LRO;
 146         if (likely(tpa_start->flags_type &
 147                    rte_cpu_to_le_32(RX_TPA_START_CMPL_FLAGS_RSS_VALID))) {
 148                 mbuf->hash.rss = rte_le_to_cpu_32(tpa_start->rss_hash);
 149                 mbuf->ol_flags |= PKT_RX_RSS_HASH;
 150         } else {
 151                 mbuf->hash.fdir.id = rte_le_to_cpu_16(tpa_start1->cfa_code);
 152                 mbuf->ol_flags |= PKT_RX_FDIR | PKT_RX_FDIR_ID;
 153         }
 154         if (tpa_start1->flags2 &
 155             rte_cpu_to_le_32(RX_TPA_START_CMPL_FLAGS2_META_FORMAT_VLAN)) {
 156                 mbuf->vlan_tci = rte_le_to_cpu_32(tpa_start1->metadata);
 157                 mbuf->ol_flags |= PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
 158         }
 159         if (likely(tpa_start1->flags2 &
 160                    rte_cpu_to_le_32(RX_TPA_START_CMPL_FLAGS2_L4_CS_CALC)))
 161                 mbuf->ol_flags |= PKT_RX_L4_CKSUM_GOOD;
 162
 163         /* recycle next mbuf */
 164         data_cons = RING_NEXT(rxr->rx_ring_struct, data_cons);
 165         bnxt_reuse_rx_mbuf(rxr, bnxt_consume_rx_buf(rxr, data_cons));
 166 }
 167
 168 static int bnxt_agg_bufs_valid(struct bnxt_cp_ring_info *cpr,
 169                 uint8_t agg_bufs, uint32_t raw_cp_cons)
 170 {
 171         uint16_t last_cp_cons;
 172         struct rx_pkt_cmpl *agg_cmpl;
 173
 174         raw_cp_cons = ADV_RAW_CMP(raw_cp_cons, agg_bufs);
 175         last_cp_cons = RING_CMP(cpr->cp_ring_struct, raw_cp_cons);
 176         agg_cmpl = (struct rx_pkt_cmpl *)&cpr->cp_desc_ring[last_cp_cons];
 177         cpr->valid = FLIP_VALID(raw_cp_cons,
 178                                 cpr->cp_ring_struct->ring_mask,
 179                                 cpr->valid);
 180         return CMP_VALID(agg_cmpl, raw_cp_cons, cpr->cp_ring_struct);
 181 }
 182
 183 /* TPA consume agg buffer out of order, allocate connected data only */
 184 static int bnxt_prod_ag_mbuf(struct bnxt_rx_queue *rxq)
 185 {
 186         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 187         uint16_t next = RING_NEXT(rxr->ag_ring_struct, rxr->ag_prod);
 188
 189         /* TODO batch allocation for better performance */
 190         while (rte_bitmap_get(rxr->ag_bitmap, next)) {
 191                 if (unlikely(bnxt_alloc_ag_data(rxq, rxr, next))) {
 192                         PMD_DRV_LOG(ERR,
 193                                 "agg mbuf alloc failed: prod=0x%x\n", next);
 194                         break;
 195                 }
 196                 rte_bitmap_clear(rxr->ag_bitmap, next);
 197                 rxr->ag_prod = next;
 198                 next = RING_NEXT(rxr->ag_ring_struct, next);
 199         }
 200
 201         return 0;
 202 }
 203
 204 static int bnxt_rx_pages(struct bnxt_rx_queue *rxq,
 205                          struct rte_mbuf *mbuf, uint32_t *tmp_raw_cons,
 206                          uint8_t agg_buf)
 207 {
 208         struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 209         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 210         int i;
 211         uint16_t cp_cons, ag_cons;
 212         struct rx_pkt_cmpl *rxcmp;
 213         struct rte_mbuf *last = mbuf;
 214
 215         for (i = 0; i < agg_buf; i++) {
 216                 struct bnxt_sw_rx_bd *ag_buf;
 217                 struct rte_mbuf *ag_mbuf;
 218                 *tmp_raw_cons = NEXT_RAW_CMP(*tmp_raw_cons);
 219                 cp_cons = RING_CMP(cpr->cp_ring_struct, *tmp_raw_cons);
 220                 rxcmp = (struct rx_pkt_cmpl *)
 221                                         &cpr->cp_desc_ring[cp_cons];
 222
 223 #ifdef BNXT_DEBUG
 224                 bnxt_dump_cmpl(cp_cons, rxcmp);
 225 #endif
 226
 227                 ag_cons = rxcmp->opaque;
 228                 RTE_ASSERT(ag_cons <= rxr->ag_ring_struct->ring_mask);
 229                 ag_buf = &rxr->ag_buf_ring[ag_cons];
 230                 ag_mbuf = ag_buf->mbuf;
 231                 RTE_ASSERT(ag_mbuf != NULL);
 232
 233                 ag_mbuf->data_len = rte_le_to_cpu_16(rxcmp->len);
 234
 235                 mbuf->nb_segs++;
 236                 mbuf->pkt_len += ag_mbuf->data_len;
 237
 238                 last->next = ag_mbuf;
 239                 last = ag_mbuf;
 240
 241                 ag_buf->mbuf = NULL;
 242
 243                 /*
 244                  * As aggregation buffer consumed out of order in TPA module,
 245                  * use bitmap to track freed slots to be allocated and notified
 246                  * to NIC
 247                  */
 248                 rte_bitmap_set(rxr->ag_bitmap, ag_cons);
 249         }
 250         bnxt_prod_ag_mbuf(rxq);
 251         return 0;
 252 }
 253
 254 static inline struct rte_mbuf *bnxt_tpa_end(
 255                 struct bnxt_rx_queue *rxq,
 256                 uint32_t *raw_cp_cons,
 257                 struct rx_tpa_end_cmpl *tpa_end,
 258                 struct rx_tpa_end_cmpl_hi *tpa_end1 __rte_unused)
 259 {
 260         struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 261         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 262         uint8_t agg_id = (tpa_end->agg_id & RX_TPA_END_CMPL_AGG_ID_MASK)
 263                         >> RX_TPA_END_CMPL_AGG_ID_SFT;
 264         struct rte_mbuf *mbuf;
 265         uint8_t agg_bufs;
 266         struct bnxt_tpa_info *tpa_info;
 267
 268         tpa_info = &rxr->tpa_info[agg_id];
 269         mbuf = tpa_info->mbuf;
 270         RTE_ASSERT(mbuf != NULL);
 271
 272         rte_prefetch0(mbuf);
 273         agg_bufs = (rte_le_to_cpu_32(tpa_end->agg_bufs_v1) &
 274                 RX_TPA_END_CMPL_AGG_BUFS_MASK) >> RX_TPA_END_CMPL_AGG_BUFS_SFT;
 275         if (agg_bufs) {
 276                 if (!bnxt_agg_bufs_valid(cpr, agg_bufs, *raw_cp_cons))
 277                         return NULL;
 278                 bnxt_rx_pages(rxq, mbuf, raw_cp_cons, agg_bufs);
 279         }
 280         mbuf->l4_len = tpa_end->payload_offset;
 281
 282         struct rte_mbuf *new_data = __bnxt_alloc_rx_data(rxq->mb_pool);
 283         RTE_ASSERT(new_data != NULL);
 284         if (!new_data) {
 285                 rte_atomic64_inc(&rxq->rx_mbuf_alloc_fail);
 286                 return NULL;
 287         }
 288         tpa_info->mbuf = new_data;
 289
 290         return mbuf;
 291 }
 292
 293 static uint32_t
 294 bnxt_parse_pkt_type(struct rx_pkt_cmpl *rxcmp, struct rx_pkt_cmpl_hi *rxcmp1)
 295 {
 296         uint32_t l3, pkt_type = 0;
 297         uint32_t t_ipcs = 0, ip6 = 0, vlan = 0;
 298         uint32_t flags_type;
 299
 300         vlan = !!(rxcmp1->flags2 &
 301                 rte_cpu_to_le_32(RX_PKT_CMPL_FLAGS2_META_FORMAT_VLAN));
 302         pkt_type |= vlan ? RTE_PTYPE_L2_ETHER_VLAN : RTE_PTYPE_L2_ETHER;
 303
 304         t_ipcs = !!(rxcmp1->flags2 &
 305                 rte_cpu_to_le_32(RX_PKT_CMPL_FLAGS2_T_IP_CS_CALC));
 306         ip6 = !!(rxcmp1->flags2 &
 307                  rte_cpu_to_le_32(RX_PKT_CMPL_FLAGS2_IP_TYPE));
 308
 309         flags_type = rxcmp->flags_type &
 310                 rte_cpu_to_le_32(RX_PKT_CMPL_FLAGS_ITYPE_MASK);
 311
 312         if (!t_ipcs && !ip6)
 313                 l3 = RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
 314         else if (!t_ipcs && ip6)
 315                 l3 = RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
 316         else if (t_ipcs && !ip6)
 317                 l3 = RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN;
 318         else
 319                 l3 = RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN;
 320
 321         switch (flags_type) {
 322         case RTE_LE32(RX_PKT_CMPL_FLAGS_ITYPE_ICMP):
 323                 if (!t_ipcs)
 324                         pkt_type |= l3 | RTE_PTYPE_L4_ICMP;
 325                 else
 326                         pkt_type |= l3 | RTE_PTYPE_INNER_L4_ICMP;
 327                 break;
 328
 329         case RTE_LE32(RX_PKT_CMPL_FLAGS_ITYPE_TCP):
 330                 if (!t_ipcs)
 331                         pkt_type |= l3 | RTE_PTYPE_L4_TCP;
 332                 else
 333                         pkt_type |= l3 | RTE_PTYPE_INNER_L4_TCP;
 334                 break;
 335
 336         case RTE_LE32(RX_PKT_CMPL_FLAGS_ITYPE_UDP):
 337                 if (!t_ipcs)
 338                         pkt_type |= l3 | RTE_PTYPE_L4_UDP;
 339                 else
 340                         pkt_type |= l3 | RTE_PTYPE_INNER_L4_UDP;
 341                 break;
 342
 343         case RTE_LE32(RX_PKT_CMPL_FLAGS_ITYPE_IP):
 344                 pkt_type |= l3;
 345                 break;
 346         }
 347
 348         return pkt_type;
 349 }
 350
 351 static int bnxt_rx_pkt(struct rte_mbuf **rx_pkt,
 352                             struct bnxt_rx_queue *rxq, uint32_t *raw_cons)
 353 {
 354         struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 355         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 356         struct rx_pkt_cmpl *rxcmp;
 357         struct rx_pkt_cmpl_hi *rxcmp1;
 358         uint32_t tmp_raw_cons = *raw_cons;
 359         uint16_t cons, prod, cp_cons =
 360             RING_CMP(cpr->cp_ring_struct, tmp_raw_cons);
 361         struct rte_mbuf *mbuf;
 362         int rc = 0;
 363         uint8_t agg_buf = 0;
 364         uint16_t cmp_type;
 365         uint32_t flags2_f = 0;
 366
 367         rxcmp = (struct rx_pkt_cmpl *)
 368             &cpr->cp_desc_ring[cp_cons];
 369
 370         tmp_raw_cons = NEXT_RAW_CMP(tmp_raw_cons);
 371         cp_cons = RING_CMP(cpr->cp_ring_struct, tmp_raw_cons);
 372         rxcmp1 = (struct rx_pkt_cmpl_hi *)&cpr->cp_desc_ring[cp_cons];
 373
 374         if (!CMP_VALID(rxcmp1, tmp_raw_cons, cpr->cp_ring_struct))
 375                 return -EBUSY;
 376
 377         cpr->valid = FLIP_VALID(cp_cons,
 378                                 cpr->cp_ring_struct->ring_mask,
 379                                 cpr->valid);
 380
 381         cmp_type = CMP_TYPE(rxcmp);
 382         if (cmp_type == RX_TPA_START_CMPL_TYPE_RX_TPA_START) {
 383                 bnxt_tpa_start(rxq, (struct rx_tpa_start_cmpl *)rxcmp,
 384                                (struct rx_tpa_start_cmpl_hi *)rxcmp1);
 385                 rc = -EINVAL; /* Continue w/o new mbuf */
 386                 goto next_rx;
 387         } else if (cmp_type == RX_TPA_END_CMPL_TYPE_RX_TPA_END) {
 388                 mbuf = bnxt_tpa_end(rxq, &tmp_raw_cons,
 389                                    (struct rx_tpa_end_cmpl *)rxcmp,
 390                                    (struct rx_tpa_end_cmpl_hi *)rxcmp1);
 391                 if (unlikely(!mbuf))
 392                         return -EBUSY;
 393                 *rx_pkt = mbuf;
 394                 goto next_rx;
 395         } else if (cmp_type != 0x11) {
 396                 rc = -EINVAL;
 397                 goto next_rx;
 398         }
 399
 400         agg_buf = (rxcmp->agg_bufs_v1 & RX_PKT_CMPL_AGG_BUFS_MASK)
 401                         >> RX_PKT_CMPL_AGG_BUFS_SFT;
 402         if (agg_buf && !bnxt_agg_bufs_valid(cpr, agg_buf, tmp_raw_cons))
 403                 return -EBUSY;
 404
 405         prod = rxr->rx_prod;
 406
 407         cons = rxcmp->opaque;
 408         mbuf = bnxt_consume_rx_buf(rxr, cons);
 409         if (mbuf == NULL)
 410                 return -EBUSY;
 411
 412         rte_prefetch0(mbuf);
 413
 414         mbuf->data_off = RTE_PKTMBUF_HEADROOM;
 415         mbuf->nb_segs = 1;
 416         mbuf->next = NULL;
 417         mbuf->pkt_len = rxcmp->len;
 418         mbuf->data_len = mbuf->pkt_len;
 419         mbuf->port = rxq->port_id;
 420         mbuf->ol_flags = 0;
 421         if (rxcmp->flags_type & RX_PKT_CMPL_FLAGS_RSS_VALID) {
 422                 mbuf->hash.rss = rxcmp->rss_hash;
 423                 mbuf->ol_flags |= PKT_RX_RSS_HASH;
 424         } else {
 425                 mbuf->hash.fdir.id = rxcmp1->cfa_code;
 426                 mbuf->ol_flags |= PKT_RX_FDIR | PKT_RX_FDIR_ID;
 427         }
 428
 429         if ((rxcmp->flags_type & rte_cpu_to_le_16(RX_PKT_CMPL_FLAGS_MASK)) ==
 430              RX_PKT_CMPL_FLAGS_ITYPE_PTP_W_TIMESTAMP)
 431                 mbuf->ol_flags |= PKT_RX_IEEE1588_PTP | PKT_RX_IEEE1588_TMST;
 432
 433         if (agg_buf)
 434                 bnxt_rx_pages(rxq, mbuf, &tmp_raw_cons, agg_buf);
 435
 436         if (rxcmp1->flags2 & RX_PKT_CMPL_FLAGS2_META_FORMAT_VLAN) {
 437                 mbuf->vlan_tci = rxcmp1->metadata &
 438                         (RX_PKT_CMPL_METADATA_VID_MASK |
 439                         RX_PKT_CMPL_METADATA_DE |
 440                         RX_PKT_CMPL_METADATA_PRI_MASK);
 441                 mbuf->ol_flags |= PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
 442         }
 443
 444         flags2_f = flags2_0xf(rxcmp1);
 445         /* IP Checksum */
 446         if (unlikely(((IS_IP_NONTUNNEL_PKT(flags2_f)) &&
 447                       (RX_CMP_IP_CS_ERROR(rxcmp1))) ||
 448                      (IS_IP_TUNNEL_PKT(flags2_f) &&
 449                       (RX_CMP_IP_OUTER_CS_ERROR(rxcmp1))))) {
 450                 mbuf->ol_flags |= PKT_RX_IP_CKSUM_BAD;
 451         } else if (unlikely(RX_CMP_IP_CS_UNKNOWN(rxcmp1))) {
 452                 mbuf->ol_flags |= PKT_RX_IP_CKSUM_UNKNOWN;
 453         } else {
 454                 mbuf->ol_flags |= PKT_RX_IP_CKSUM_GOOD;
 455         }
 456
 457         /* L4 Checksum */
 458         if (likely(IS_L4_NONTUNNEL_PKT(flags2_f))) {
 459                 if (unlikely(RX_CMP_L4_INNER_CS_ERR2(rxcmp1)))
 460                         mbuf->ol_flags |= PKT_RX_L4_CKSUM_BAD;
 461                 else
 462                         mbuf->ol_flags |= PKT_RX_L4_CKSUM_GOOD;
 463         } else if (IS_L4_TUNNEL_PKT(flags2_f)) {
 464                 if (unlikely(RX_CMP_L4_INNER_CS_ERR2(rxcmp1)))
 465                         mbuf->ol_flags |= PKT_RX_L4_CKSUM_BAD;
 466                 else
 467                         mbuf->ol_flags |= PKT_RX_L4_CKSUM_GOOD;
 468                 if (unlikely(RX_CMP_L4_OUTER_CS_ERR2(rxcmp1))) {
 469                         mbuf->ol_flags |= PKT_RX_OUTER_L4_CKSUM_BAD;
 470                 } else if (unlikely(IS_L4_TUNNEL_PKT_ONLY_INNER_L4_CS
 471                                     (flags2_f))) {
 472                         mbuf->ol_flags |= PKT_RX_OUTER_L4_CKSUM_UNKNOWN;
 473                 } else {
 474                         mbuf->ol_flags |= PKT_RX_OUTER_L4_CKSUM_GOOD;
 475                 }
 476         } else if (unlikely(RX_CMP_L4_CS_UNKNOWN(rxcmp1))) {
 477                 mbuf->ol_flags |= PKT_RX_L4_CKSUM_UNKNOWN;
 478         }
 479
 480         mbuf->packet_type = bnxt_parse_pkt_type(rxcmp, rxcmp1);
 481
 482 #ifdef BNXT_DEBUG
 483         if (rxcmp1->errors_v2 & RX_CMP_L2_ERRORS) {
 484                 /* Re-install the mbuf back to the rx ring */
 485                 bnxt_reuse_rx_mbuf(rxr, cons, mbuf);
 486
 487                 rc = -EIO;
 488                 goto next_rx;
 489         }
 490 #endif
 491         /*
 492          * TODO: Redesign this....
 493          * If the allocation fails, the packet does not get received.
 494          * Simply returning this will result in slowly falling behind
 495          * on the producer ring buffers.
 496          * Instead, "filling up" the producer just before ringing the
 497          * doorbell could be a better solution since it will let the
 498          * producer ring starve until memory is available again pushing
 499          * the drops into hardware and getting them out of the driver
 500          * allowing recovery to a full producer ring.
 501          *
 502          * This could also help with cache usage by preventing per-packet
 503          * calls in favour of a tight loop with the same function being called
 504          * in it.
 505          */
 506         prod = RING_NEXT(rxr->rx_ring_struct, prod);
 507         if (bnxt_alloc_rx_data(rxq, rxr, prod)) {
 508                 PMD_DRV_LOG(ERR, "mbuf alloc failed with prod=0x%x\n", prod);
 509                 rc = -ENOMEM;
 510                 goto rx;
 511         }
 512         rxr->rx_prod = prod;
 513         /*
 514          * All MBUFs are allocated with the same size under DPDK,
 515          * no optimization for rx_copy_thresh
 516          */
 517 rx:
 518         *rx_pkt = mbuf;
 519
 520 next_rx:
 521
 522         *raw_cons = tmp_raw_cons;
 523
 524         return rc;
 525 }
 526
 527 uint16_t bnxt_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 528                                uint16_t nb_pkts)
 529 {
 530         struct bnxt_rx_queue *rxq = rx_queue;
 531         struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 532         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 533         uint32_t raw_cons = cpr->cp_raw_cons;
 534         uint32_t cons;
 535         int nb_rx_pkts = 0;
 536         struct rx_pkt_cmpl *rxcmp;
 537         uint16_t prod = rxr->rx_prod;
 538         uint16_t ag_prod = rxr->ag_prod;
 539         int rc = 0;
 540         bool evt = false;
 541
 542         /* If Rx Q was stopped return. RxQ0 cannot be stopped. */
 543         if (unlikely(((rxq->rx_deferred_start ||
 544                        !rte_spinlock_trylock(&rxq->lock)) &&
 545                       rxq->queue_id)))
 546                 return 0;
 547
 548         /* Handle RX burst request */
 549         while (1) {
 550                 cons = RING_CMP(cpr->cp_ring_struct, raw_cons);
 551                 rte_prefetch0(&cpr->cp_desc_ring[cons]);
 552                 rxcmp = (struct rx_pkt_cmpl *)&cpr->cp_desc_ring[cons];
 553
 554                 if (!CMP_VALID(rxcmp, raw_cons, cpr->cp_ring_struct))
 555                         break;
 556                 cpr->valid = FLIP_VALID(cons,
 557                                         cpr->cp_ring_struct->ring_mask,
 558                                         cpr->valid);
 559
 560                 /* TODO: Avoid magic numbers... */
 561                 if ((CMP_TYPE(rxcmp) & 0x30) == 0x10) {
 562                         rc = bnxt_rx_pkt(&rx_pkts[nb_rx_pkts], rxq, &raw_cons);
 563                         if (likely(!rc) || rc == -ENOMEM)
 564                                 nb_rx_pkts++;
 565                         if (rc == -EBUSY)       /* partial completion */
 566                                 break;
 567                 } else if (!BNXT_NUM_ASYNC_CPR(rxq->bp)) {
 568                         evt =
 569                         bnxt_event_hwrm_resp_handler(rxq->bp,
 570                                                      (struct cmpl_base *)rxcmp);
 571                 }
 572
 573                 raw_cons = NEXT_RAW_CMP(raw_cons);
 574                 if (nb_rx_pkts == nb_pkts || evt)
 575                         break;
 576                 /* Post some Rx buf early in case of larger burst processing */
 577                 if (nb_rx_pkts == BNXT_RX_POST_THRESH)
 578                         bnxt_db_write(&rxr->rx_db, rxr->rx_prod);
 579         }
 580
 581         cpr->cp_raw_cons = raw_cons;
 582         if (!nb_rx_pkts && !evt) {
 583                 /*
 584                  * For PMD, there is no need to keep on pushing to REARM
 585                  * the doorbell if there are no new completions
 586                  */
 587                 goto done;
 588         }
 589
 590         if (prod != rxr->rx_prod)
 591                 bnxt_db_write(&rxr->rx_db, rxr->rx_prod);
 592
 593         /* Ring the AGG ring DB */
 594         if (ag_prod != rxr->ag_prod)
 595                 bnxt_db_write(&rxr->ag_db, rxr->ag_prod);
 596
 597         bnxt_db_cq(cpr);
 598
 599         /* Attempt to alloc Rx buf in case of a previous allocation failure. */
 600         if (rc == -ENOMEM) {
 601                 int i;
 602
 603                 for (i = prod; i <= nb_rx_pkts;
 604                         i = RING_NEXT(rxr->rx_ring_struct, i)) {
 605                         struct bnxt_sw_rx_bd *rx_buf = &rxr->rx_buf_ring[i];
 606
 607                         /* Buffer already allocated for this index. */
 608                         if (rx_buf->mbuf != NULL)
 609                                 continue;
 610
 611                         /* This slot is empty. Alloc buffer for Rx */
 612                         if (!bnxt_alloc_rx_data(rxq, rxr, i)) {
 613                                 rxr->rx_prod = i;
 614                                 bnxt_db_write(&rxr->rx_db, rxr->rx_prod);
 615                         } else {
 616                                 PMD_DRV_LOG(ERR, "Alloc  mbuf failed\n");
 617                                 break;
 618                         }
 619                 }
 620         }
 621
 622 done:
 623         rte_spinlock_unlock(&rxq->lock);
 624
 625         return nb_rx_pkts;
 626 }
 627
 628 void bnxt_free_rx_rings(struct bnxt *bp)
 629 {
 630         int i;
 631         struct bnxt_rx_queue *rxq;
 632
 633         if (!bp->rx_queues)
 634                 return;
 635
 636         for (i = 0; i < (int)bp->rx_nr_rings; i++) {
 637                 rxq = bp->rx_queues[i];
 638                 if (!rxq)
 639                         continue;
 640
 641                 bnxt_free_ring(rxq->rx_ring->rx_ring_struct);
 642                 rte_free(rxq->rx_ring->rx_ring_struct);
 643
 644                 /* Free the Aggregator ring */
 645                 bnxt_free_ring(rxq->rx_ring->ag_ring_struct);
 646                 rte_free(rxq->rx_ring->ag_ring_struct);
 647                 rxq->rx_ring->ag_ring_struct = NULL;
 648
 649                 rte_free(rxq->rx_ring);
 650
 651                 bnxt_free_ring(rxq->cp_ring->cp_ring_struct);
 652                 rte_free(rxq->cp_ring->cp_ring_struct);
 653                 rte_free(rxq->cp_ring);
 654
 655                 rte_free(rxq);
 656                 bp->rx_queues[i] = NULL;
 657         }
 658 }
 659
 660 int bnxt_init_rx_ring_struct(struct bnxt_rx_queue *rxq, unsigned int socket_id)
 661 {
 662         struct bnxt_cp_ring_info *cpr;
 663         struct bnxt_cp_ring_info *nqr;
 664         struct bnxt_rx_ring_info *rxr;
 665         struct bnxt_ring *ring;
 666
 667         rxq->rx_buf_use_size = BNXT_MAX_MTU + RTE_ETHER_HDR_LEN +
 668                 RTE_ETHER_CRC_LEN + (2 * VLAN_TAG_SIZE);
 669         rxq->rx_buf_size = rxq->rx_buf_use_size + sizeof(struct rte_mbuf);
 670
 671         rxr = rte_zmalloc_socket("bnxt_rx_ring",
 672                                  sizeof(struct bnxt_rx_ring_info),
 673                                  RTE_CACHE_LINE_SIZE, socket_id);
 674         if (rxr == NULL)
 675                 return -ENOMEM;
 676         rxq->rx_ring = rxr;
 677
 678         ring = rte_zmalloc_socket("bnxt_rx_ring_struct",
 679                                    sizeof(struct bnxt_ring),
 680                                    RTE_CACHE_LINE_SIZE, socket_id);
 681         if (ring == NULL)
 682                 return -ENOMEM;
 683         rxr->rx_ring_struct = ring;
 684         ring->ring_size = rte_align32pow2(rxq->nb_rx_desc);
 685         ring->ring_mask = ring->ring_size - 1;
 686         ring->bd = (void *)rxr->rx_desc_ring;
 687         ring->bd_dma = rxr->rx_desc_mapping;
 688         ring->vmem_size = ring->ring_size * sizeof(struct bnxt_sw_rx_bd);
 689         ring->vmem = (void **)&rxr->rx_buf_ring;
 690
 691         cpr = rte_zmalloc_socket("bnxt_rx_ring",
 692                                  sizeof(struct bnxt_cp_ring_info),
 693                                  RTE_CACHE_LINE_SIZE, socket_id);
 694         if (cpr == NULL)
 695                 return -ENOMEM;
 696         rxq->cp_ring = cpr;
 697
 698         ring = rte_zmalloc_socket("bnxt_rx_ring_struct",
 699                                    sizeof(struct bnxt_ring),
 700                                    RTE_CACHE_LINE_SIZE, socket_id);
 701         if (ring == NULL)
 702                 return -ENOMEM;
 703         cpr->cp_ring_struct = ring;
 704         ring->ring_size = rte_align32pow2(rxr->rx_ring_struct->ring_size *
 705                                           (2 + AGG_RING_SIZE_FACTOR));
 706         ring->ring_mask = ring->ring_size - 1;
 707         ring->bd = (void *)cpr->cp_desc_ring;
 708         ring->bd_dma = cpr->cp_desc_mapping;
 709         ring->vmem_size = 0;
 710         ring->vmem = NULL;
 711
 712         if (BNXT_HAS_NQ(rxq->bp)) {
 713                 nqr = rte_zmalloc_socket("bnxt_rx_ring_cq",
 714                                          sizeof(struct bnxt_cp_ring_info),
 715                                          RTE_CACHE_LINE_SIZE, socket_id);
 716                 if (nqr == NULL)
 717                         return -ENOMEM;
 718
 719                 rxq->nq_ring = nqr;
 720
 721                 ring = rte_zmalloc_socket("bnxt_rx_ring_struct",
 722                                           sizeof(struct bnxt_ring),
 723                                           RTE_CACHE_LINE_SIZE, socket_id);
 724                 if (ring == NULL)
 725                         return -ENOMEM;
 726
 727                 nqr->cp_ring_struct = ring;
 728                 ring->ring_size =
 729                         rte_align32pow2(rxr->rx_ring_struct->ring_size *
 730                                         (2 + AGG_RING_SIZE_FACTOR));
 731                 ring->ring_mask = ring->ring_size - 1;
 732                 ring->bd = (void *)nqr->cp_desc_ring;
 733                 ring->bd_dma = nqr->cp_desc_mapping;
 734                 ring->vmem_size = 0;
 735                 ring->vmem = NULL;
 736         }
 737
 738         /* Allocate Aggregator rings */
 739         ring = rte_zmalloc_socket("bnxt_rx_ring_struct",
 740                                    sizeof(struct bnxt_ring),
 741                                    RTE_CACHE_LINE_SIZE, socket_id);
 742         if (ring == NULL)
 743                 return -ENOMEM;
 744         rxr->ag_ring_struct = ring;
 745         ring->ring_size = rte_align32pow2(rxq->nb_rx_desc *
 746                                           AGG_RING_SIZE_FACTOR);
 747         ring->ring_mask = ring->ring_size - 1;
 748         ring->bd = (void *)rxr->ag_desc_ring;
 749         ring->bd_dma = rxr->ag_desc_mapping;
 750         ring->vmem_size = ring->ring_size * sizeof(struct bnxt_sw_rx_bd);
 751         ring->vmem = (void **)&rxr->ag_buf_ring;
 752
 753         return 0;
 754 }
 755
 756 static void bnxt_init_rxbds(struct bnxt_ring *ring, uint32_t type,
 757                             uint16_t len)
 758 {
 759         uint32_t j;
 760         struct rx_prod_pkt_bd *rx_bd_ring = (struct rx_prod_pkt_bd *)ring->bd;
 761
 762         if (!rx_bd_ring)
 763                 return;
 764         for (j = 0; j < ring->ring_size; j++) {
 765                 rx_bd_ring[j].flags_type = rte_cpu_to_le_16(type);
 766                 rx_bd_ring[j].len = rte_cpu_to_le_16(len);
 767                 rx_bd_ring[j].opaque = j;
 768         }
 769 }
 770
 771 int bnxt_init_one_rx_ring(struct bnxt_rx_queue *rxq)
 772 {
 773         struct bnxt_rx_ring_info *rxr;
 774         struct bnxt_ring *ring;
 775         uint32_t prod, type;
 776         unsigned int i;
 777         uint16_t size;
 778
 779         size = rte_pktmbuf_data_room_size(rxq->mb_pool) - RTE_PKTMBUF_HEADROOM;
 780         if (rxq->rx_buf_use_size <= size)
 781                 size = rxq->rx_buf_use_size;
 782
 783         type = RX_PROD_PKT_BD_TYPE_RX_PROD_PKT | RX_PROD_PKT_BD_FLAGS_EOP_PAD;
 784
 785         rxr = rxq->rx_ring;
 786         ring = rxr->rx_ring_struct;
 787         bnxt_init_rxbds(ring, type, size);
 788
 789         prod = rxr->rx_prod;
 790         for (i = 0; i < ring->ring_size; i++) {
 791                 if (bnxt_alloc_rx_data(rxq, rxr, prod) != 0) {
 792                         PMD_DRV_LOG(WARNING,
 793                                 "init'ed rx ring %d with %d/%d mbufs only\n",
 794                                 rxq->queue_id, i, ring->ring_size);
 795                         break;
 796                 }
 797                 rxr->rx_prod = prod;
 798                 prod = RING_NEXT(rxr->rx_ring_struct, prod);
 799         }
 800
 801         ring = rxr->ag_ring_struct;
 802         type = RX_PROD_AGG_BD_TYPE_RX_PROD_AGG;
 803         bnxt_init_rxbds(ring, type, size);
 804         prod = rxr->ag_prod;
 805
 806         for (i = 0; i < ring->ring_size; i++) {
 807                 if (bnxt_alloc_ag_data(rxq, rxr, prod) != 0) {
 808                         PMD_DRV_LOG(WARNING,
 809                         "init'ed AG ring %d with %d/%d mbufs only\n",
 810                         rxq->queue_id, i, ring->ring_size);
 811                         break;
 812                 }
 813                 rxr->ag_prod = prod;
 814                 prod = RING_NEXT(rxr->ag_ring_struct, prod);
 815         }
 816         PMD_DRV_LOG(DEBUG, "AGG Done!\n");
 817
 818         if (rxr->tpa_info) {
 819                 for (i = 0; i < BNXT_TPA_MAX; i++) {
 820                         rxr->tpa_info[i].mbuf =
 821                                 __bnxt_alloc_rx_data(rxq->mb_pool);
 822                         if (!rxr->tpa_info[i].mbuf) {
 823                                 rte_atomic64_inc(&rxq->rx_mbuf_alloc_fail);
 824                                 return -ENOMEM;
 825                         }
 826                 }
 827         }
 828         PMD_DRV_LOG(DEBUG, "TPA alloc Done!\n");
 829
 830         return 0;
 831 }