drivers/net/bnxt/bnxt_rxr.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2014-2021 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_reps.h"
  16 #include "bnxt_ring.h"
  17 #include "bnxt_rxr.h"
  18 #include "bnxt_rxq.h"
  19 #include "hsi_struct_def_dpdk.h"
  20 #ifdef RTE_LIBRTE_IEEE1588
  21 #include "bnxt_hwrm.h"
  22 #endif
  23
  24 #include <bnxt_tf_common.h>
  25 #include <ulp_mark_mgr.h>
  26
  27 /*
  28  * RX Ring handling
  29  */
  30
  31 static inline struct rte_mbuf *__bnxt_alloc_rx_data(struct rte_mempool *mb)
  32 {
  33         struct rte_mbuf *data;
  34
  35         data = rte_mbuf_raw_alloc(mb);
  36
  37         return data;
  38 }
  39
  40 static inline int bnxt_alloc_rx_data(struct bnxt_rx_queue *rxq,
  41                                      struct bnxt_rx_ring_info *rxr,
  42                                      uint16_t raw_prod)
  43 {
  44         uint16_t prod = RING_IDX(rxr->rx_ring_struct, raw_prod);
  45         struct rx_prod_pkt_bd *rxbd;
  46         struct rte_mbuf **rx_buf;
  47         struct rte_mbuf *mbuf;
  48
  49         rxbd = &rxr->rx_desc_ring[prod];
  50         rx_buf = &rxr->rx_buf_ring[prod];
  51         mbuf = __bnxt_alloc_rx_data(rxq->mb_pool);
  52         if (!mbuf) {
  53                 rte_atomic64_inc(&rxq->rx_mbuf_alloc_fail);
  54                 return -ENOMEM;
  55         }
  56
  57         *rx_buf = mbuf;
  58         mbuf->data_off = RTE_PKTMBUF_HEADROOM;
  59
  60         rxbd->address = rte_cpu_to_le_64(rte_mbuf_data_iova_default(mbuf));
  61
  62         return 0;
  63 }
  64
  65 static inline int bnxt_alloc_ag_data(struct bnxt_rx_queue *rxq,
  66                                      struct bnxt_rx_ring_info *rxr,
  67                                      uint16_t raw_prod)
  68 {
  69         uint16_t prod = RING_IDX(rxr->ag_ring_struct, raw_prod);
  70         struct rx_prod_pkt_bd *rxbd;
  71         struct rte_mbuf **rx_buf;
  72         struct rte_mbuf *mbuf;
  73
  74         rxbd = &rxr->ag_desc_ring[prod];
  75         rx_buf = &rxr->ag_buf_ring[prod];
  76         if (rxbd == NULL) {
  77                 PMD_DRV_LOG(ERR, "Jumbo Frame. rxbd is NULL\n");
  78                 return -EINVAL;
  79         }
  80
  81         if (rx_buf == NULL) {
  82                 PMD_DRV_LOG(ERR, "Jumbo Frame. rx_buf is NULL\n");
  83                 return -EINVAL;
  84         }
  85
  86         mbuf = __bnxt_alloc_rx_data(rxq->mb_pool);
  87         if (!mbuf) {
  88                 rte_atomic64_inc(&rxq->rx_mbuf_alloc_fail);
  89                 return -ENOMEM;
  90         }
  91
  92         *rx_buf = mbuf;
  93         mbuf->data_off = RTE_PKTMBUF_HEADROOM;
  94
  95         rxbd->address = rte_cpu_to_le_64(rte_mbuf_data_iova_default(mbuf));
  96
  97         return 0;
  98 }
  99
 100 static inline void bnxt_reuse_rx_mbuf(struct bnxt_rx_ring_info *rxr,
 101                                struct rte_mbuf *mbuf)
 102 {
 103         uint16_t prod, raw_prod = RING_NEXT(rxr->rx_raw_prod);
 104         struct rte_mbuf **prod_rx_buf;
 105         struct rx_prod_pkt_bd *prod_bd;
 106
 107         prod = RING_IDX(rxr->rx_ring_struct, raw_prod);
 108         prod_rx_buf = &rxr->rx_buf_ring[prod];
 109
 110         RTE_ASSERT(*prod_rx_buf == NULL);
 111         RTE_ASSERT(mbuf != NULL);
 112
 113         *prod_rx_buf = mbuf;
 114
 115         prod_bd = &rxr->rx_desc_ring[prod];
 116
 117         prod_bd->address = rte_cpu_to_le_64(rte_mbuf_data_iova_default(mbuf));
 118
 119         rxr->rx_raw_prod = raw_prod;
 120 }
 121
 122 static inline
 123 struct rte_mbuf *bnxt_consume_rx_buf(struct bnxt_rx_ring_info *rxr,
 124                                      uint16_t cons)
 125 {
 126         struct rte_mbuf **cons_rx_buf;
 127         struct rte_mbuf *mbuf;
 128
 129         cons_rx_buf = &rxr->rx_buf_ring[RING_IDX(rxr->rx_ring_struct, cons)];
 130         RTE_ASSERT(*cons_rx_buf != NULL);
 131         mbuf = *cons_rx_buf;
 132         *cons_rx_buf = NULL;
 133
 134         return mbuf;
 135 }
 136
 137 static void bnxt_tpa_get_metadata(struct bnxt *bp,
 138                                   struct bnxt_tpa_info *tpa_info,
 139                                   struct rx_tpa_start_cmpl *tpa_start,
 140                                   struct rx_tpa_start_cmpl_hi *tpa_start1)
 141 {
 142         tpa_info->cfa_code_valid = 0;
 143         tpa_info->vlan_valid = 0;
 144         tpa_info->hash_valid = 0;
 145         tpa_info->l4_csum_valid = 0;
 146
 147         if (likely(tpa_start->flags_type &
 148                    rte_cpu_to_le_32(RX_TPA_START_CMPL_FLAGS_RSS_VALID))) {
 149                 tpa_info->hash_valid = 1;
 150                 tpa_info->rss_hash = rte_le_to_cpu_32(tpa_start->rss_hash);
 151         }
 152
 153         if (bp->vnic_cap_flags & BNXT_VNIC_CAP_RX_CMPL_V2) {
 154                 struct rx_tpa_start_v2_cmpl *v2_tpa_start = (void *)tpa_start;
 155                 struct rx_tpa_start_v2_cmpl_hi *v2_tpa_start1 =
 156                         (void *)tpa_start1;
 157
 158                 if (v2_tpa_start->agg_id &
 159                     RX_TPA_START_V2_CMPL_METADATA1_VALID) {
 160                         tpa_info->vlan_valid = 1;
 161                         tpa_info->vlan =
 162                                 rte_le_to_cpu_16(v2_tpa_start1->metadata0);
 163                 }
 164
 165                 if (v2_tpa_start1->flags2 & RX_CMP_FLAGS2_L4_CSUM_ALL_OK_MASK)
 166                         tpa_info->l4_csum_valid = 1;
 167
 168                 return;
 169         }
 170
 171         tpa_info->cfa_code_valid = 1;
 172         tpa_info->cfa_code = rte_le_to_cpu_16(tpa_start1->cfa_code);
 173         if (tpa_start1->flags2 &
 174             rte_cpu_to_le_32(RX_TPA_START_CMPL_FLAGS2_META_FORMAT_VLAN)) {
 175                 tpa_info->vlan_valid = 1;
 176                 tpa_info->vlan = rte_le_to_cpu_32(tpa_start1->metadata);
 177         }
 178
 179         if (likely(tpa_start1->flags2 &
 180                    rte_cpu_to_le_32(RX_TPA_START_CMPL_FLAGS2_L4_CS_CALC)))
 181                 tpa_info->l4_csum_valid = 1;
 182 }
 183
 184 static void bnxt_tpa_start(struct bnxt_rx_queue *rxq,
 185                            struct rx_tpa_start_cmpl *tpa_start,
 186                            struct rx_tpa_start_cmpl_hi *tpa_start1)
 187 {
 188         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 189         uint16_t agg_id;
 190         uint16_t data_cons;
 191         struct bnxt_tpa_info *tpa_info;
 192         struct rte_mbuf *mbuf;
 193
 194         agg_id = bnxt_tpa_start_agg_id(rxq->bp, tpa_start);
 195
 196         data_cons = tpa_start->opaque;
 197         tpa_info = &rxr->tpa_info[agg_id];
 198
 199         mbuf = bnxt_consume_rx_buf(rxr, data_cons);
 200
 201         bnxt_reuse_rx_mbuf(rxr, tpa_info->mbuf);
 202
 203         tpa_info->agg_count = 0;
 204         tpa_info->mbuf = mbuf;
 205         tpa_info->len = rte_le_to_cpu_32(tpa_start->len);
 206
 207         mbuf->data_off = RTE_PKTMBUF_HEADROOM;
 208         mbuf->nb_segs = 1;
 209         mbuf->next = NULL;
 210         mbuf->pkt_len = rte_le_to_cpu_32(tpa_start->len);
 211         mbuf->data_len = mbuf->pkt_len;
 212         mbuf->port = rxq->port_id;
 213         mbuf->ol_flags = PKT_RX_LRO;
 214
 215         bnxt_tpa_get_metadata(rxq->bp, tpa_info, tpa_start, tpa_start1);
 216
 217         if (likely(tpa_info->hash_valid)) {
 218                 mbuf->hash.rss = tpa_info->rss_hash;
 219                 mbuf->ol_flags |= PKT_RX_RSS_HASH;
 220         } else if (tpa_info->cfa_code_valid) {
 221                 mbuf->hash.fdir.id = tpa_info->cfa_code;
 222                 mbuf->ol_flags |= PKT_RX_FDIR | PKT_RX_FDIR_ID;
 223         }
 224
 225         if (tpa_info->vlan_valid) {
 226                 mbuf->vlan_tci = tpa_info->vlan;
 227                 mbuf->ol_flags |= PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
 228         }
 229
 230         if (likely(tpa_info->l4_csum_valid))
 231                 mbuf->ol_flags |= PKT_RX_L4_CKSUM_GOOD;
 232
 233         /* recycle next mbuf */
 234         data_cons = RING_NEXT(data_cons);
 235         bnxt_reuse_rx_mbuf(rxr, bnxt_consume_rx_buf(rxr, data_cons));
 236 }
 237
 238 static int bnxt_agg_bufs_valid(struct bnxt_cp_ring_info *cpr,
 239                 uint8_t agg_bufs, uint32_t raw_cp_cons)
 240 {
 241         uint16_t last_cp_cons;
 242         struct rx_pkt_cmpl *agg_cmpl;
 243
 244         raw_cp_cons = ADV_RAW_CMP(raw_cp_cons, agg_bufs);
 245         last_cp_cons = RING_CMP(cpr->cp_ring_struct, raw_cp_cons);
 246         agg_cmpl = (struct rx_pkt_cmpl *)&cpr->cp_desc_ring[last_cp_cons];
 247         cpr->valid = FLIP_VALID(raw_cp_cons,
 248                                 cpr->cp_ring_struct->ring_mask,
 249                                 cpr->valid);
 250         return CMP_VALID(agg_cmpl, raw_cp_cons, cpr->cp_ring_struct);
 251 }
 252
 253 /* TPA consume agg buffer out of order, allocate connected data only */
 254 static int bnxt_prod_ag_mbuf(struct bnxt_rx_queue *rxq)
 255 {
 256         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 257         uint16_t raw_next = RING_NEXT(rxr->ag_raw_prod);
 258         uint16_t bmap_next = RING_IDX(rxr->ag_ring_struct, raw_next);
 259
 260         /* TODO batch allocation for better performance */
 261         while (rte_bitmap_get(rxr->ag_bitmap, bmap_next)) {
 262                 if (unlikely(bnxt_alloc_ag_data(rxq, rxr, raw_next))) {
 263                         PMD_DRV_LOG(ERR, "agg mbuf alloc failed: prod=0x%x\n",
 264                                     raw_next);
 265                         break;
 266                 }
 267                 rte_bitmap_clear(rxr->ag_bitmap, bmap_next);
 268                 rxr->ag_raw_prod = raw_next;
 269                 raw_next = RING_NEXT(raw_next);
 270                 bmap_next = RING_IDX(rxr->ag_ring_struct, raw_next);
 271         }
 272
 273         return 0;
 274 }
 275
 276 static int bnxt_rx_pages(struct bnxt_rx_queue *rxq,
 277                          struct rte_mbuf *mbuf, uint32_t *tmp_raw_cons,
 278                          uint8_t agg_buf, struct bnxt_tpa_info *tpa_info)
 279 {
 280         struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 281         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 282         int i;
 283         uint16_t cp_cons, ag_cons;
 284         struct rx_pkt_cmpl *rxcmp;
 285         struct rte_mbuf *last = mbuf;
 286         bool is_p5_tpa = tpa_info && BNXT_CHIP_P5(rxq->bp);
 287
 288         for (i = 0; i < agg_buf; i++) {
 289                 struct rte_mbuf **ag_buf;
 290                 struct rte_mbuf *ag_mbuf;
 291
 292                 if (is_p5_tpa) {
 293                         rxcmp = (void *)&tpa_info->agg_arr[i];
 294                 } else {
 295                         *tmp_raw_cons = NEXT_RAW_CMP(*tmp_raw_cons);
 296                         cp_cons = RING_CMP(cpr->cp_ring_struct, *tmp_raw_cons);
 297                         rxcmp = (struct rx_pkt_cmpl *)
 298                                         &cpr->cp_desc_ring[cp_cons];
 299                 }
 300
 301 #ifdef BNXT_DEBUG
 302                 bnxt_dump_cmpl(cp_cons, rxcmp);
 303 #endif
 304
 305                 ag_cons = rxcmp->opaque;
 306                 RTE_ASSERT(ag_cons <= rxr->ag_ring_struct->ring_mask);
 307                 ag_buf = &rxr->ag_buf_ring[ag_cons];
 308                 ag_mbuf = *ag_buf;
 309                 RTE_ASSERT(ag_mbuf != NULL);
 310
 311                 ag_mbuf->data_len = rte_le_to_cpu_16(rxcmp->len);
 312
 313                 mbuf->nb_segs++;
 314                 mbuf->pkt_len += ag_mbuf->data_len;
 315
 316                 last->next = ag_mbuf;
 317                 last = ag_mbuf;
 318
 319                 *ag_buf = NULL;
 320
 321                 /*
 322                  * As aggregation buffer consumed out of order in TPA module,
 323                  * use bitmap to track freed slots to be allocated and notified
 324                  * to NIC
 325                  */
 326                 rte_bitmap_set(rxr->ag_bitmap, ag_cons);
 327         }
 328         last->next = NULL;
 329         bnxt_prod_ag_mbuf(rxq);
 330         return 0;
 331 }
 332
 333 static inline struct rte_mbuf *bnxt_tpa_end(
 334                 struct bnxt_rx_queue *rxq,
 335                 uint32_t *raw_cp_cons,
 336                 struct rx_tpa_end_cmpl *tpa_end,
 337                 struct rx_tpa_end_cmpl_hi *tpa_end1)
 338 {
 339         struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 340         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 341         uint16_t agg_id;
 342         struct rte_mbuf *mbuf;
 343         uint8_t agg_bufs;
 344         uint8_t payload_offset;
 345         struct bnxt_tpa_info *tpa_info;
 346
 347         if (BNXT_CHIP_P5(rxq->bp)) {
 348                 struct rx_tpa_v2_end_cmpl *th_tpa_end;
 349                 struct rx_tpa_v2_end_cmpl_hi *th_tpa_end1;
 350
 351                 th_tpa_end = (void *)tpa_end;
 352                 th_tpa_end1 = (void *)tpa_end1;
 353                 agg_id = BNXT_TPA_END_AGG_ID_TH(th_tpa_end);
 354                 agg_bufs = BNXT_TPA_END_AGG_BUFS_TH(th_tpa_end1);
 355                 payload_offset = th_tpa_end1->payload_offset;
 356         } else {
 357                 agg_id = BNXT_TPA_END_AGG_ID(tpa_end);
 358                 agg_bufs = BNXT_TPA_END_AGG_BUFS(tpa_end);
 359                 if (!bnxt_agg_bufs_valid(cpr, agg_bufs, *raw_cp_cons))
 360                         return NULL;
 361                 payload_offset = tpa_end->payload_offset;
 362         }
 363
 364         tpa_info = &rxr->tpa_info[agg_id];
 365         mbuf = tpa_info->mbuf;
 366         RTE_ASSERT(mbuf != NULL);
 367
 368         if (agg_bufs) {
 369                 bnxt_rx_pages(rxq, mbuf, raw_cp_cons, agg_bufs, tpa_info);
 370         }
 371         mbuf->l4_len = payload_offset;
 372
 373         struct rte_mbuf *new_data = __bnxt_alloc_rx_data(rxq->mb_pool);
 374         RTE_ASSERT(new_data != NULL);
 375         if (!new_data) {
 376                 rte_atomic64_inc(&rxq->rx_mbuf_alloc_fail);
 377                 return NULL;
 378         }
 379         tpa_info->mbuf = new_data;
 380
 381         return mbuf;
 382 }
 383
 384 uint32_t bnxt_ptype_table[BNXT_PTYPE_TBL_DIM] __rte_cache_aligned;
 385
 386 static void __rte_cold
 387 bnxt_init_ptype_table(void)
 388 {
 389         uint32_t *pt = bnxt_ptype_table;
 390         static bool initialized;
 391         int ip6, tun, type;
 392         uint32_t l3;
 393         int i;
 394
 395         if (initialized)
 396                 return;
 397
 398         for (i = 0; i < BNXT_PTYPE_TBL_DIM; i++) {
 399                 if (i & (RX_PKT_CMPL_FLAGS2_META_FORMAT_VLAN >> 2))
 400                         pt[i] = RTE_PTYPE_L2_ETHER_VLAN;
 401                 else
 402                         pt[i] = RTE_PTYPE_L2_ETHER;
 403
 404                 ip6 = i & (RX_PKT_CMPL_FLAGS2_IP_TYPE >> 7);
 405                 tun = i & (RX_PKT_CMPL_FLAGS2_T_IP_CS_CALC >> 2);
 406                 type = (i & 0x78) << 9;
 407
 408                 if (!tun && !ip6)
 409                         l3 = RTE_PTYPE_L3_IPV4_EXT_UNKNOWN;
 410                 else if (!tun && ip6)
 411                         l3 = RTE_PTYPE_L3_IPV6_EXT_UNKNOWN;
 412                 else if (tun && !ip6)
 413                         l3 = RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN;
 414                 else
 415                         l3 = RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN;
 416
 417                 switch (type) {
 418                 case RX_PKT_CMPL_FLAGS_ITYPE_ICMP:
 419                         if (tun)
 420                                 pt[i] |= l3 | RTE_PTYPE_INNER_L4_ICMP;
 421                         else
 422                                 pt[i] |= l3 | RTE_PTYPE_L4_ICMP;
 423                         break;
 424                 case RX_PKT_CMPL_FLAGS_ITYPE_TCP:
 425                         if (tun)
 426                                 pt[i] |= l3 | RTE_PTYPE_INNER_L4_TCP;
 427                         else
 428                                 pt[i] |= l3 | RTE_PTYPE_L4_TCP;
 429                         break;
 430                 case RX_PKT_CMPL_FLAGS_ITYPE_UDP:
 431                         if (tun)
 432                                 pt[i] |= l3 | RTE_PTYPE_INNER_L4_UDP;
 433                         else
 434                                 pt[i] |= l3 | RTE_PTYPE_L4_UDP;
 435                         break;
 436                 case RX_PKT_CMPL_FLAGS_ITYPE_IP:
 437                         pt[i] |= l3;
 438                         break;
 439                 }
 440         }
 441         initialized = true;
 442 }
 443
 444 static uint32_t
 445 bnxt_parse_pkt_type(struct rx_pkt_cmpl *rxcmp, struct rx_pkt_cmpl_hi *rxcmp1)
 446 {
 447         uint32_t flags_type, flags2;
 448         uint8_t index;
 449
 450         flags_type = rte_le_to_cpu_16(rxcmp->flags_type);
 451         flags2 = rte_le_to_cpu_32(rxcmp1->flags2);
 452
 453         /*
 454          * Index format:
 455          *     bit 0: RX_PKT_CMPL_FLAGS2_T_IP_CS_CALC
 456          *     bit 1: RX_CMPL_FLAGS2_IP_TYPE
 457          *     bit 2: RX_PKT_CMPL_FLAGS2_META_FORMAT_VLAN
 458          *     bits 3-6: RX_PKT_CMPL_FLAGS_ITYPE
 459          */
 460         index = ((flags_type & RX_PKT_CMPL_FLAGS_ITYPE_MASK) >> 9) |
 461                 ((flags2 & (RX_PKT_CMPL_FLAGS2_META_FORMAT_VLAN |
 462                            RX_PKT_CMPL_FLAGS2_T_IP_CS_CALC)) >> 2) |
 463                 ((flags2 & RX_PKT_CMPL_FLAGS2_IP_TYPE) >> 7);
 464
 465         return bnxt_ptype_table[index];
 466 }
 467
 468 static void __rte_cold
 469 bnxt_init_ol_flags_tables(struct bnxt_rx_queue *rxq)
 470 {
 471         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 472         struct rte_eth_conf *dev_conf;
 473         bool outer_cksum_enabled;
 474         uint64_t offloads;
 475         uint32_t *pt;
 476         int i;
 477
 478         dev_conf = &rxq->bp->eth_dev->data->dev_conf;
 479         offloads = dev_conf->rxmode.offloads;
 480
 481         outer_cksum_enabled = !!(offloads & (DEV_RX_OFFLOAD_OUTER_IPV4_CKSUM |
 482                                              DEV_RX_OFFLOAD_OUTER_UDP_CKSUM));
 483
 484         /* Initialize ol_flags table. */
 485         pt = rxr->ol_flags_table;
 486         for (i = 0; i < BNXT_OL_FLAGS_TBL_DIM; i++) {
 487                 pt[i] = 0;
 488
 489                 if (i & RX_PKT_CMPL_FLAGS2_META_FORMAT_VLAN)
 490                         pt[i] |= PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED;
 491
 492                 if (i & (RX_PKT_CMPL_FLAGS2_T_IP_CS_CALC << 3)) {
 493                         /* Tunnel case. */
 494                         if (outer_cksum_enabled) {
 495                                 if (i & RX_PKT_CMPL_FLAGS2_IP_CS_CALC)
 496                                         pt[i] |= PKT_RX_IP_CKSUM_GOOD;
 497
 498                                 if (i & RX_PKT_CMPL_FLAGS2_L4_CS_CALC)
 499                                         pt[i] |= PKT_RX_L4_CKSUM_GOOD;
 500
 501                                 if (i & RX_PKT_CMPL_FLAGS2_T_L4_CS_CALC)
 502                                         pt[i] |= PKT_RX_OUTER_L4_CKSUM_GOOD;
 503                         } else {
 504                                 if (i & RX_PKT_CMPL_FLAGS2_T_IP_CS_CALC)
 505                                         pt[i] |= PKT_RX_IP_CKSUM_GOOD;
 506
 507                                 if (i & RX_PKT_CMPL_FLAGS2_T_L4_CS_CALC)
 508                                         pt[i] |= PKT_RX_L4_CKSUM_GOOD;
 509                         }
 510                 } else {
 511                         /* Non-tunnel case. */
 512                         if (i & RX_PKT_CMPL_FLAGS2_IP_CS_CALC)
 513                                 pt[i] |= PKT_RX_IP_CKSUM_GOOD;
 514
 515                         if (i & RX_PKT_CMPL_FLAGS2_L4_CS_CALC)
 516                                 pt[i] |= PKT_RX_L4_CKSUM_GOOD;
 517                 }
 518         }
 519
 520         /* Initialize checksum error table. */
 521         pt = rxr->ol_flags_err_table;
 522         for (i = 0; i < BNXT_OL_FLAGS_ERR_TBL_DIM; i++) {
 523                 pt[i] = 0;
 524
 525                 if (i & (RX_PKT_CMPL_FLAGS2_T_IP_CS_CALC << 2)) {
 526                         /* Tunnel case. */
 527                         if (outer_cksum_enabled) {
 528                                 if (i & (RX_PKT_CMPL_ERRORS_IP_CS_ERROR >> 4))
 529                                         pt[i] |= PKT_RX_IP_CKSUM_BAD;
 530
 531                                 if (i & (RX_PKT_CMPL_ERRORS_T_IP_CS_ERROR >> 4))
 532                                         pt[i] |= PKT_RX_OUTER_IP_CKSUM_BAD;
 533
 534                                 if (i & (RX_PKT_CMPL_ERRORS_L4_CS_ERROR >> 4))
 535                                         pt[i] |= PKT_RX_L4_CKSUM_BAD;
 536
 537                                 if (i & (RX_PKT_CMPL_ERRORS_T_L4_CS_ERROR >> 4))
 538                                         pt[i] |= PKT_RX_OUTER_L4_CKSUM_BAD;
 539                         } else {
 540                                 if (i & (RX_PKT_CMPL_ERRORS_T_IP_CS_ERROR >> 4))
 541                                         pt[i] |= PKT_RX_IP_CKSUM_BAD;
 542
 543                                 if (i & (RX_PKT_CMPL_ERRORS_T_L4_CS_ERROR >> 4))
 544                                         pt[i] |= PKT_RX_L4_CKSUM_BAD;
 545                         }
 546                 } else {
 547                         /* Non-tunnel case. */
 548                         if (i & (RX_PKT_CMPL_ERRORS_IP_CS_ERROR >> 4))
 549                                 pt[i] |= PKT_RX_IP_CKSUM_BAD;
 550
 551                         if (i & (RX_PKT_CMPL_ERRORS_L4_CS_ERROR >> 4))
 552                                 pt[i] |= PKT_RX_L4_CKSUM_BAD;
 553                 }
 554         }
 555 }
 556
 557 static void
 558 bnxt_set_ol_flags(struct bnxt_rx_ring_info *rxr, struct rx_pkt_cmpl *rxcmp,
 559                   struct rx_pkt_cmpl_hi *rxcmp1, struct rte_mbuf *mbuf)
 560 {
 561         uint16_t flags_type, errors, flags;
 562         uint64_t ol_flags;
 563
 564         flags_type = rte_le_to_cpu_16(rxcmp->flags_type);
 565
 566         flags = rte_le_to_cpu_32(rxcmp1->flags2) &
 567                                 (RX_PKT_CMPL_FLAGS2_IP_CS_CALC |
 568                                  RX_PKT_CMPL_FLAGS2_L4_CS_CALC |
 569                                  RX_PKT_CMPL_FLAGS2_T_IP_CS_CALC |
 570                                  RX_PKT_CMPL_FLAGS2_T_L4_CS_CALC |
 571                                  RX_PKT_CMPL_FLAGS2_META_FORMAT_VLAN);
 572
 573         flags |= (flags & RX_PKT_CMPL_FLAGS2_T_IP_CS_CALC) << 3;
 574         errors = rte_le_to_cpu_16(rxcmp1->errors_v2) &
 575                                 (RX_PKT_CMPL_ERRORS_IP_CS_ERROR |
 576                                  RX_PKT_CMPL_ERRORS_L4_CS_ERROR |
 577                                  RX_PKT_CMPL_ERRORS_T_IP_CS_ERROR |
 578                                  RX_PKT_CMPL_ERRORS_T_L4_CS_ERROR);
 579         errors = (errors >> 4) & flags;
 580
 581         ol_flags = rxr->ol_flags_table[flags & ~errors];
 582
 583         if (unlikely(errors)) {
 584                 errors |= (flags & RX_PKT_CMPL_FLAGS2_T_IP_CS_CALC) << 2;
 585                 ol_flags |= rxr->ol_flags_err_table[errors];
 586         }
 587
 588         if (flags_type & RX_PKT_CMPL_FLAGS_RSS_VALID) {
 589                 mbuf->hash.rss = rte_le_to_cpu_32(rxcmp->rss_hash);
 590                 ol_flags |= PKT_RX_RSS_HASH;
 591         }
 592
 593 #ifdef RTE_LIBRTE_IEEE1588
 594         if (unlikely((flags_type & RX_PKT_CMPL_FLAGS_MASK) ==
 595                      RX_PKT_CMPL_FLAGS_ITYPE_PTP_W_TIMESTAMP))
 596                 ol_flags |= PKT_RX_IEEE1588_PTP | PKT_RX_IEEE1588_TMST;
 597 #endif
 598
 599         mbuf->ol_flags = ol_flags;
 600 }
 601
 602 #ifdef RTE_LIBRTE_IEEE1588
 603 static void
 604 bnxt_get_rx_ts_p5(struct bnxt *bp, uint32_t rx_ts_cmpl)
 605 {
 606         struct bnxt_ptp_cfg *ptp = bp->ptp_cfg;
 607         uint64_t last_hwrm_time;
 608         uint64_t pkt_time = 0;
 609
 610         if (!BNXT_CHIP_P5(bp) || !ptp)
 611                 return;
 612
 613         /* On Thor, Rx timestamps are provided directly in the
 614          * Rx completion records to the driver. Only 32 bits of
 615          * the timestamp is present in the completion. Driver needs
 616          * to read the current 48 bit free running timer using the
 617          * HWRM_PORT_TS_QUERY command and combine the upper 16 bits
 618          * from the HWRM response with the lower 32 bits in the
 619          * Rx completion to produce the 48 bit timestamp for the Rx packet
 620          */
 621         last_hwrm_time = ptp->current_time;
 622         pkt_time = (last_hwrm_time & BNXT_PTP_CURRENT_TIME_MASK) | rx_ts_cmpl;
 623         if (rx_ts_cmpl < (uint32_t)last_hwrm_time) {
 624                 /* timer has rolled over */
 625                 pkt_time += (1ULL << 32);
 626         }
 627         ptp->rx_timestamp = pkt_time;
 628 }
 629 #endif
 630
 631 static uint32_t
 632 bnxt_ulp_set_mark_in_mbuf(struct bnxt *bp, struct rx_pkt_cmpl_hi *rxcmp1,
 633                           struct rte_mbuf *mbuf, uint32_t *vfr_flag)
 634 {
 635         uint32_t cfa_code;
 636         uint32_t meta_fmt;
 637         uint32_t meta;
 638         bool gfid = false;
 639         uint32_t mark_id;
 640         uint32_t flags2;
 641         uint32_t gfid_support = 0;
 642         int rc;
 643
 644         if (BNXT_GFID_ENABLED(bp))
 645                 gfid_support = 1;
 646
 647         cfa_code = rte_le_to_cpu_16(rxcmp1->cfa_code);
 648         flags2 = rte_le_to_cpu_32(rxcmp1->flags2);
 649         meta = rte_le_to_cpu_32(rxcmp1->metadata);
 650
 651         /*
 652          * The flags field holds extra bits of info from [6:4]
 653          * which indicate if the flow is in TCAM or EM or EEM
 654          */
 655         meta_fmt = (flags2 & BNXT_CFA_META_FMT_MASK) >>
 656                 BNXT_CFA_META_FMT_SHFT;
 657
 658         switch (meta_fmt) {
 659         case 0:
 660                 if (gfid_support) {
 661                         /* Not an LFID or GFID, a flush cmd. */
 662                         goto skip_mark;
 663                 } else {
 664                         /* LFID mode, no vlan scenario */
 665                         gfid = false;
 666                 }
 667                 break;
 668         case 4:
 669         case 5:
 670                 /*
 671                  * EM/TCAM case
 672                  * Assume that EM doesn't support Mark due to GFID
 673                  * collisions with EEM.  Simply return without setting the mark
 674                  * in the mbuf.
 675                  */
 676                 if (BNXT_CFA_META_EM_TEST(meta)) {
 677                         /*This is EM hit {EM(1), GFID[27:16], 19'd0 or vtag } */
 678                         gfid = true;
 679                         meta >>= BNXT_RX_META_CFA_CODE_SHIFT;
 680                         cfa_code |= meta << BNXT_CFA_CODE_META_SHIFT;
 681                 } else {
 682                         /*
 683                          * It is a TCAM entry, so it is an LFID.
 684                          * The TCAM IDX and Mode can also be determined
 685                          * by decoding the meta_data. We are not
 686                          * using these for now.
 687                          */
 688                 }
 689                 break;
 690         case 6:
 691         case 7:
 692                 /* EEM Case, only using gfid in EEM for now. */
 693                 gfid = true;
 694
 695                 /*
 696                  * For EEM flows, The first part of cfa_code is 16 bits.
 697                  * The second part is embedded in the
 698                  * metadata field from bit 19 onwards. The driver needs to
 699                  * ignore the first 19 bits of metadata and use the next 12
 700                  * bits as higher 12 bits of cfa_code.
 701                  */
 702                 meta >>= BNXT_RX_META_CFA_CODE_SHIFT;
 703                 cfa_code |= meta << BNXT_CFA_CODE_META_SHIFT;
 704                 break;
 705         default:
 706                 /* For other values, the cfa_code is assumed to be an LFID. */
 707                 break;
 708         }
 709
 710         rc = ulp_mark_db_mark_get(bp->ulp_ctx, gfid,
 711                                   cfa_code, vfr_flag, &mark_id);
 712         if (!rc) {
 713                 /* VF to VFR Rx path. So, skip mark_id injection in mbuf */
 714                 if (vfr_flag && *vfr_flag)
 715                         return mark_id;
 716                 /* Got the mark, write it to the mbuf and return */
 717                 mbuf->hash.fdir.hi = mark_id;
 718                 *bnxt_cfa_code_dynfield(mbuf) = cfa_code & 0xffffffffull;
 719                 mbuf->hash.fdir.id = rxcmp1->cfa_code;
 720                 mbuf->ol_flags |= PKT_RX_FDIR | PKT_RX_FDIR_ID;
 721                 return mark_id;
 722         }
 723
 724 skip_mark:
 725         mbuf->hash.fdir.hi = 0;
 726         mbuf->hash.fdir.id = 0;
 727
 728         return 0;
 729 }
 730
 731 void bnxt_set_mark_in_mbuf(struct bnxt *bp,
 732                            struct rx_pkt_cmpl_hi *rxcmp1,
 733                            struct rte_mbuf *mbuf)
 734 {
 735         uint32_t cfa_code = 0;
 736         uint8_t meta_fmt = 0;
 737         uint16_t flags2 = 0;
 738         uint32_t meta =  0;
 739
 740         cfa_code = rte_le_to_cpu_16(rxcmp1->cfa_code);
 741         if (!cfa_code)
 742                 return;
 743
 744         if (cfa_code && !bp->mark_table[cfa_code].valid)
 745                 return;
 746
 747         flags2 = rte_le_to_cpu_16(rxcmp1->flags2);
 748         meta = rte_le_to_cpu_32(rxcmp1->metadata);
 749         if (meta) {
 750                 meta >>= BNXT_RX_META_CFA_CODE_SHIFT;
 751
 752                 /* The flags field holds extra bits of info from [6:4]
 753                  * which indicate if the flow is in TCAM or EM or EEM
 754                  */
 755                 meta_fmt = (flags2 & BNXT_CFA_META_FMT_MASK) >>
 756                            BNXT_CFA_META_FMT_SHFT;
 757
 758                 /* meta_fmt == 4 => 'b100 => 'b10x => EM.
 759                  * meta_fmt == 5 => 'b101 => 'b10x => EM + VLAN
 760                  * meta_fmt == 6 => 'b110 => 'b11x => EEM
 761                  * meta_fmt == 7 => 'b111 => 'b11x => EEM + VLAN.
 762                  */
 763                 meta_fmt >>= BNXT_CFA_META_FMT_EM_EEM_SHFT;
 764         }
 765
 766         mbuf->hash.fdir.hi = bp->mark_table[cfa_code].mark_id;
 767         mbuf->ol_flags |= PKT_RX_FDIR | PKT_RX_FDIR_ID;
 768 }
 769
 770 static int bnxt_rx_pkt(struct rte_mbuf **rx_pkt,
 771                        struct bnxt_rx_queue *rxq, uint32_t *raw_cons)
 772 {
 773         struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 774         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 775         struct rx_pkt_cmpl *rxcmp;
 776         struct rx_pkt_cmpl_hi *rxcmp1;
 777         uint32_t tmp_raw_cons = *raw_cons;
 778         uint16_t cons, raw_prod, cp_cons =
 779             RING_CMP(cpr->cp_ring_struct, tmp_raw_cons);
 780         struct rte_mbuf *mbuf;
 781         int rc = 0;
 782         uint8_t agg_buf = 0;
 783         uint16_t cmp_type;
 784         uint32_t vfr_flag = 0, mark_id = 0;
 785         struct bnxt *bp = rxq->bp;
 786
 787         rxcmp = (struct rx_pkt_cmpl *)
 788             &cpr->cp_desc_ring[cp_cons];
 789
 790         cmp_type = CMP_TYPE(rxcmp);
 791
 792         if (cmp_type == RX_TPA_V2_ABUF_CMPL_TYPE_RX_TPA_AGG) {
 793                 struct rx_tpa_v2_abuf_cmpl *rx_agg = (void *)rxcmp;
 794                 uint16_t agg_id = rte_cpu_to_le_16(rx_agg->agg_id);
 795                 struct bnxt_tpa_info *tpa_info;
 796
 797                 tpa_info = &rxr->tpa_info[agg_id];
 798                 RTE_ASSERT(tpa_info->agg_count < 16);
 799                 tpa_info->agg_arr[tpa_info->agg_count++] = *rx_agg;
 800                 rc = -EINVAL; /* Continue w/o new mbuf */
 801                 goto next_rx;
 802         }
 803
 804         tmp_raw_cons = NEXT_RAW_CMP(tmp_raw_cons);
 805         cp_cons = RING_CMP(cpr->cp_ring_struct, tmp_raw_cons);
 806         rxcmp1 = (struct rx_pkt_cmpl_hi *)&cpr->cp_desc_ring[cp_cons];
 807
 808         if (!CMP_VALID(rxcmp1, tmp_raw_cons, cpr->cp_ring_struct))
 809                 return -EBUSY;
 810
 811         cpr->valid = FLIP_VALID(cp_cons,
 812                                 cpr->cp_ring_struct->ring_mask,
 813                                 cpr->valid);
 814
 815         if (cmp_type == RX_TPA_START_CMPL_TYPE_RX_TPA_START ||
 816             cmp_type == RX_TPA_START_V2_CMPL_TYPE_RX_TPA_START_V2) {
 817                 bnxt_tpa_start(rxq, (struct rx_tpa_start_cmpl *)rxcmp,
 818                                (struct rx_tpa_start_cmpl_hi *)rxcmp1);
 819                 rc = -EINVAL; /* Continue w/o new mbuf */
 820                 goto next_rx;
 821         } else if (cmp_type == RX_TPA_END_CMPL_TYPE_RX_TPA_END) {
 822                 mbuf = bnxt_tpa_end(rxq, &tmp_raw_cons,
 823                                    (struct rx_tpa_end_cmpl *)rxcmp,
 824                                    (struct rx_tpa_end_cmpl_hi *)rxcmp1);
 825                 if (unlikely(!mbuf))
 826                         return -EBUSY;
 827                 *rx_pkt = mbuf;
 828                 goto next_rx;
 829         } else if ((cmp_type != CMPL_BASE_TYPE_RX_L2) &&
 830                    (cmp_type != CMPL_BASE_TYPE_RX_L2_V2)) {
 831                 rc = -EINVAL;
 832                 goto next_rx;
 833         }
 834
 835         agg_buf = BNXT_RX_L2_AGG_BUFS(rxcmp);
 836         if (agg_buf && !bnxt_agg_bufs_valid(cpr, agg_buf, tmp_raw_cons))
 837                 return -EBUSY;
 838
 839         raw_prod = rxr->rx_raw_prod;
 840
 841         cons = rxcmp->opaque;
 842         mbuf = bnxt_consume_rx_buf(rxr, cons);
 843         if (mbuf == NULL)
 844                 return -EBUSY;
 845
 846         mbuf->data_off = RTE_PKTMBUF_HEADROOM;
 847         mbuf->nb_segs = 1;
 848         mbuf->next = NULL;
 849         mbuf->pkt_len = rxcmp->len;
 850         mbuf->data_len = mbuf->pkt_len;
 851         mbuf->port = rxq->port_id;
 852
 853 #ifdef RTE_LIBRTE_IEEE1588
 854         if (unlikely((rte_le_to_cpu_16(rxcmp->flags_type) &
 855                       RX_PKT_CMPL_FLAGS_MASK) ==
 856                      RX_PKT_CMPL_FLAGS_ITYPE_PTP_W_TIMESTAMP))
 857                 bnxt_get_rx_ts_p5(rxq->bp, rxcmp1->reorder);
 858 #endif
 859
 860         if (cmp_type == CMPL_BASE_TYPE_RX_L2_V2) {
 861                 bnxt_parse_csum_v2(mbuf, rxcmp1);
 862                 bnxt_parse_pkt_type_v2(mbuf, rxcmp, rxcmp1);
 863                 bnxt_rx_vlan_v2(mbuf, rxcmp, rxcmp1);
 864                 /* TODO Add support for cfa_code parsing */
 865                 goto reuse_rx_mbuf;
 866         }
 867
 868         bnxt_set_ol_flags(rxr, rxcmp, rxcmp1, mbuf);
 869
 870         mbuf->packet_type = bnxt_parse_pkt_type(rxcmp, rxcmp1);
 871
 872         if (BNXT_TRUFLOW_EN(bp))
 873                 mark_id = bnxt_ulp_set_mark_in_mbuf(rxq->bp, rxcmp1, mbuf,
 874                                                     &vfr_flag);
 875         else
 876                 bnxt_set_mark_in_mbuf(rxq->bp, rxcmp1, mbuf);
 877
 878 reuse_rx_mbuf:
 879         if (agg_buf)
 880                 bnxt_rx_pages(rxq, mbuf, &tmp_raw_cons, agg_buf, NULL);
 881
 882 #ifdef BNXT_DEBUG
 883         if (rxcmp1->errors_v2 & RX_CMP_L2_ERRORS) {
 884                 /* Re-install the mbuf back to the rx ring */
 885                 bnxt_reuse_rx_mbuf(rxr, cons, mbuf);
 886
 887                 rc = -EIO;
 888                 goto next_rx;
 889         }
 890 #endif
 891         /*
 892          * TODO: Redesign this....
 893          * If the allocation fails, the packet does not get received.
 894          * Simply returning this will result in slowly falling behind
 895          * on the producer ring buffers.
 896          * Instead, "filling up" the producer just before ringing the
 897          * doorbell could be a better solution since it will let the
 898          * producer ring starve until memory is available again pushing
 899          * the drops into hardware and getting them out of the driver
 900          * allowing recovery to a full producer ring.
 901          *
 902          * This could also help with cache usage by preventing per-packet
 903          * calls in favour of a tight loop with the same function being called
 904          * in it.
 905          */
 906         raw_prod = RING_NEXT(raw_prod);
 907         if (bnxt_alloc_rx_data(rxq, rxr, raw_prod)) {
 908                 PMD_DRV_LOG(ERR, "mbuf alloc failed with prod=0x%x\n",
 909                             raw_prod);
 910                 rc = -ENOMEM;
 911                 goto rx;
 912         }
 913         rxr->rx_raw_prod = raw_prod;
 914
 915         if (BNXT_TRUFLOW_EN(bp) && (BNXT_VF_IS_TRUSTED(bp) || BNXT_PF(bp)) &&
 916             vfr_flag) {
 917                 bnxt_vfr_recv(mark_id, rxq->queue_id, mbuf);
 918                 /* Now return an error so that nb_rx_pkts is not
 919                  * incremented.
 920                  * This packet was meant to be given to the representor.
 921                  * So no need to account the packet and give it to
 922                  * parent Rx burst function.
 923                  */
 924                 rc = -ENODEV;
 925                 goto next_rx;
 926         }
 927         /*
 928          * All MBUFs are allocated with the same size under DPDK,
 929          * no optimization for rx_copy_thresh
 930          */
 931 rx:
 932         *rx_pkt = mbuf;
 933
 934 next_rx:
 935
 936         *raw_cons = tmp_raw_cons;
 937
 938         return rc;
 939 }
 940
 941 uint16_t bnxt_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
 942                                uint16_t nb_pkts)
 943 {
 944         struct bnxt_rx_queue *rxq = rx_queue;
 945         struct bnxt_cp_ring_info *cpr = rxq->cp_ring;
 946         struct bnxt_rx_ring_info *rxr = rxq->rx_ring;
 947         uint16_t rx_raw_prod = rxr->rx_raw_prod;
 948         uint16_t ag_raw_prod = rxr->ag_raw_prod;
 949         uint32_t raw_cons = cpr->cp_raw_cons;
 950         bool alloc_failed = false;
 951         uint32_t cons;
 952         int nb_rx_pkts = 0;
 953         int nb_rep_rx_pkts = 0;
 954         struct rx_pkt_cmpl *rxcmp;
 955         int rc = 0;
 956         bool evt = false;
 957
 958         if (unlikely(is_bnxt_in_error(rxq->bp)))
 959                 return 0;
 960
 961         /* If Rx Q was stopped return */
 962         if (unlikely(!rxq->rx_started))
 963                 return 0;
 964
 965 #if defined(RTE_ARCH_X86) || defined(RTE_ARCH_ARM64)
 966         /*
 967          * Replenish buffers if needed when a transition has been made from
 968          * vector- to non-vector- receive processing.
 969          */
 970         while (unlikely(rxq->rxrearm_nb)) {
 971                 if (!bnxt_alloc_rx_data(rxq, rxr, rxq->rxrearm_start)) {
 972                         rxr->rx_raw_prod = rxq->rxrearm_start;
 973                         bnxt_db_write(&rxr->rx_db, rxr->rx_raw_prod);
 974                         rxq->rxrearm_start++;
 975                         rxq->rxrearm_nb--;
 976                 } else {
 977                         /* Retry allocation on next call. */
 978                         break;
 979                 }
 980         }
 981 #endif
 982
 983         /* Handle RX burst request */
 984         while (1) {
 985                 cons = RING_CMP(cpr->cp_ring_struct, raw_cons);
 986                 rxcmp = (struct rx_pkt_cmpl *)&cpr->cp_desc_ring[cons];
 987
 988                 if (!CMP_VALID(rxcmp, raw_cons, cpr->cp_ring_struct))
 989                         break;
 990                 cpr->valid = FLIP_VALID(cons,
 991                                         cpr->cp_ring_struct->ring_mask,
 992                                         cpr->valid);
 993
 994                 if ((CMP_TYPE(rxcmp) >= CMPL_BASE_TYPE_RX_TPA_START_V2) &&
 995                      (CMP_TYPE(rxcmp) <= RX_TPA_V2_ABUF_CMPL_TYPE_RX_TPA_AGG)) {
 996                         rc = bnxt_rx_pkt(&rx_pkts[nb_rx_pkts], rxq, &raw_cons);
 997                         if (!rc)
 998                                 nb_rx_pkts++;
 999                         else if (rc == -EBUSY)  /* partial completion */
1000                                 break;
1001                         else if (rc == -ENODEV) /* completion for representor */
1002                                 nb_rep_rx_pkts++;
1003                         else if (rc == -ENOMEM) {
1004                                 nb_rx_pkts++;
1005                                 alloc_failed = true;
1006                         }
1007                 } else if (!BNXT_NUM_ASYNC_CPR(rxq->bp)) {
1008                         evt =
1009                         bnxt_event_hwrm_resp_handler(rxq->bp,
1010                                                      (struct cmpl_base *)rxcmp);
1011                         /* If the async event is Fatal error, return */
1012                         if (unlikely(is_bnxt_in_error(rxq->bp)))
1013                                 goto done;
1014                 }
1015
1016                 raw_cons = NEXT_RAW_CMP(raw_cons);
1017                 if (nb_rx_pkts == nb_pkts || nb_rep_rx_pkts == nb_pkts || evt)
1018                         break;
1019                 /* Post some Rx buf early in case of larger burst processing */
1020                 if (nb_rx_pkts == BNXT_RX_POST_THRESH)
1021                         bnxt_db_write(&rxr->rx_db, rxr->rx_raw_prod);
1022         }
1023
1024         cpr->cp_raw_cons = raw_cons;
1025         if (!nb_rx_pkts && !nb_rep_rx_pkts && !evt) {
1026                 /*
1027                  * For PMD, there is no need to keep on pushing to REARM
1028                  * the doorbell if there are no new completions
1029                  */
1030                 goto done;
1031         }
1032
1033         /* Ring the completion queue doorbell. */
1034         bnxt_db_cq(cpr);
1035
1036         /* Ring the receive descriptor doorbell. */
1037         if (rx_raw_prod != rxr->rx_raw_prod)
1038                 bnxt_db_write(&rxr->rx_db, rxr->rx_raw_prod);
1039
1040         /* Ring the AGG ring DB */
1041         if (ag_raw_prod != rxr->ag_raw_prod)
1042                 bnxt_db_write(&rxr->ag_db, rxr->ag_raw_prod);
1043
1044         /* Attempt to alloc Rx buf in case of a previous allocation failure. */
1045         if (alloc_failed) {
1046                 uint16_t cnt;
1047
1048                 rx_raw_prod = RING_NEXT(rx_raw_prod);
1049                 for (cnt = 0; cnt < nb_rx_pkts + nb_rep_rx_pkts; cnt++) {
1050                         struct rte_mbuf **rx_buf;
1051                         uint16_t ndx;
1052
1053                         ndx = RING_IDX(rxr->rx_ring_struct, rx_raw_prod + cnt);
1054                         rx_buf = &rxr->rx_buf_ring[ndx];
1055
1056                         /* Buffer already allocated for this index. */
1057                         if (*rx_buf != NULL && *rx_buf != &rxq->fake_mbuf)
1058                                 continue;
1059
1060                         /* This slot is empty. Alloc buffer for Rx */
1061                         if (!bnxt_alloc_rx_data(rxq, rxr, rx_raw_prod + cnt)) {
1062                                 rxr->rx_raw_prod = rx_raw_prod + cnt;
1063                                 bnxt_db_write(&rxr->rx_db, rxr->rx_raw_prod);
1064                         } else {
1065                                 PMD_DRV_LOG(ERR, "Alloc  mbuf failed\n");
1066                                 break;
1067                         }
1068                 }
1069         }
1070
1071 done:
1072         return nb_rx_pkts;
1073 }
1074
1075 /*
1076  * Dummy DPDK callback for RX.
1077  *
1078  * This function is used to temporarily replace the real callback during
1079  * unsafe control operations on the queue, or in case of error.
1080  */
1081 uint16_t
1082 bnxt_dummy_recv_pkts(void *rx_queue __rte_unused,
1083                      struct rte_mbuf **rx_pkts __rte_unused,
1084                      uint16_t nb_pkts __rte_unused)
1085 {
1086         return 0;
1087 }
1088
1089 void bnxt_free_rx_rings(struct bnxt *bp)
1090 {
1091         int i;
1092         struct bnxt_rx_queue *rxq;
1093
1094         if (!bp->rx_queues)
1095                 return;
1096
1097         for (i = 0; i < (int)bp->rx_nr_rings; i++) {
1098                 rxq = bp->rx_queues[i];
1099                 if (!rxq)
1100                         continue;
1101
1102                 bnxt_free_ring(rxq->rx_ring->rx_ring_struct);
1103                 rte_free(rxq->rx_ring->rx_ring_struct);
1104
1105                 /* Free the Aggregator ring */
1106                 bnxt_free_ring(rxq->rx_ring->ag_ring_struct);
1107                 rte_free(rxq->rx_ring->ag_ring_struct);
1108                 rxq->rx_ring->ag_ring_struct = NULL;
1109
1110                 rte_free(rxq->rx_ring);
1111
1112                 bnxt_free_ring(rxq->cp_ring->cp_ring_struct);
1113                 rte_free(rxq->cp_ring->cp_ring_struct);
1114                 rte_free(rxq->cp_ring);
1115
1116                 rte_free(rxq);
1117                 bp->rx_queues[i] = NULL;
1118         }
1119 }
1120
1121 int bnxt_init_rx_ring_struct(struct bnxt_rx_queue *rxq, unsigned int socket_id)
1122 {
1123         struct bnxt_cp_ring_info *cpr;
1124         struct bnxt_rx_ring_info *rxr;
1125         struct bnxt_ring *ring;
1126
1127         rxq->rx_buf_size = BNXT_MAX_PKT_LEN + sizeof(struct rte_mbuf);
1128
1129         rxr = rte_zmalloc_socket("bnxt_rx_ring",
1130                                  sizeof(struct bnxt_rx_ring_info),
1131                                  RTE_CACHE_LINE_SIZE, socket_id);
1132         if (rxr == NULL)
1133                 return -ENOMEM;
1134         rxq->rx_ring = rxr;
1135
1136         ring = rte_zmalloc_socket("bnxt_rx_ring_struct",
1137                                    sizeof(struct bnxt_ring),
1138                                    RTE_CACHE_LINE_SIZE, socket_id);
1139         if (ring == NULL)
1140                 return -ENOMEM;
1141         rxr->rx_ring_struct = ring;
1142         ring->ring_size = rte_align32pow2(rxq->nb_rx_desc);
1143         ring->ring_mask = ring->ring_size - 1;
1144         ring->bd = (void *)rxr->rx_desc_ring;
1145         ring->bd_dma = rxr->rx_desc_mapping;
1146
1147         /* Allocate extra rx ring entries for vector rx. */
1148         ring->vmem_size = sizeof(struct rte_mbuf *) *
1149                                 (ring->ring_size + RTE_BNXT_DESCS_PER_LOOP);
1150
1151         ring->vmem = (void **)&rxr->rx_buf_ring;
1152         ring->fw_ring_id = INVALID_HW_RING_ID;
1153
1154         cpr = rte_zmalloc_socket("bnxt_rx_ring",
1155                                  sizeof(struct bnxt_cp_ring_info),
1156                                  RTE_CACHE_LINE_SIZE, socket_id);
1157         if (cpr == NULL)
1158                 return -ENOMEM;
1159         rxq->cp_ring = cpr;
1160
1161         ring = rte_zmalloc_socket("bnxt_rx_ring_struct",
1162                                    sizeof(struct bnxt_ring),
1163                                    RTE_CACHE_LINE_SIZE, socket_id);
1164         if (ring == NULL)
1165                 return -ENOMEM;
1166         cpr->cp_ring_struct = ring;
1167
1168         /* Allocate two completion slots per entry in desc ring. */
1169         ring->ring_size = rxr->rx_ring_struct->ring_size * 2;
1170         ring->ring_size *= AGG_RING_SIZE_FACTOR;
1171
1172         ring->ring_size = rte_align32pow2(ring->ring_size);
1173         ring->ring_mask = ring->ring_size - 1;
1174         ring->bd = (void *)cpr->cp_desc_ring;
1175         ring->bd_dma = cpr->cp_desc_mapping;
1176         ring->vmem_size = 0;
1177         ring->vmem = NULL;
1178         ring->fw_ring_id = INVALID_HW_RING_ID;
1179
1180         /* Allocate Aggregator rings */
1181         ring = rte_zmalloc_socket("bnxt_rx_ring_struct",
1182                                    sizeof(struct bnxt_ring),
1183                                    RTE_CACHE_LINE_SIZE, socket_id);
1184         if (ring == NULL)
1185                 return -ENOMEM;
1186         rxr->ag_ring_struct = ring;
1187         ring->ring_size = rte_align32pow2(rxq->nb_rx_desc *
1188                                           AGG_RING_SIZE_FACTOR);
1189         ring->ring_mask = ring->ring_size - 1;
1190         ring->bd = (void *)rxr->ag_desc_ring;
1191         ring->bd_dma = rxr->ag_desc_mapping;
1192         ring->vmem_size = ring->ring_size * sizeof(struct rte_mbuf *);
1193         ring->vmem = (void **)&rxr->ag_buf_ring;
1194         ring->fw_ring_id = INVALID_HW_RING_ID;
1195
1196         return 0;
1197 }
1198
1199 static void bnxt_init_rxbds(struct bnxt_ring *ring, uint32_t type,
1200                             uint16_t len)
1201 {
1202         uint32_t j;
1203         struct rx_prod_pkt_bd *rx_bd_ring = (struct rx_prod_pkt_bd *)ring->bd;
1204
1205         if (!rx_bd_ring)
1206                 return;
1207         for (j = 0; j < ring->ring_size; j++) {
1208                 rx_bd_ring[j].flags_type = rte_cpu_to_le_16(type);
1209                 rx_bd_ring[j].len = rte_cpu_to_le_16(len);
1210                 rx_bd_ring[j].opaque = j;
1211         }
1212 }
1213
1214 int bnxt_init_one_rx_ring(struct bnxt_rx_queue *rxq)
1215 {
1216         struct bnxt_rx_ring_info *rxr;
1217         struct bnxt_ring *ring;
1218         uint32_t raw_prod, type;
1219         unsigned int i;
1220         uint16_t size;
1221
1222         /* Initialize packet type table. */
1223         bnxt_init_ptype_table();
1224
1225         size = rte_pktmbuf_data_room_size(rxq->mb_pool) - RTE_PKTMBUF_HEADROOM;
1226         size = RTE_MIN(BNXT_MAX_PKT_LEN, size);
1227
1228         type = RX_PROD_PKT_BD_TYPE_RX_PROD_PKT;
1229
1230         rxr = rxq->rx_ring;
1231         ring = rxr->rx_ring_struct;
1232         bnxt_init_rxbds(ring, type, size);
1233
1234         /* Initialize offload flags parsing table. */
1235         bnxt_init_ol_flags_tables(rxq);
1236
1237         raw_prod = rxr->rx_raw_prod;
1238         for (i = 0; i < ring->ring_size; i++) {
1239                 if (unlikely(!rxr->rx_buf_ring[i])) {
1240                         if (bnxt_alloc_rx_data(rxq, rxr, raw_prod) != 0) {
1241                                 PMD_DRV_LOG(WARNING,
1242                                             "init'ed rx ring %d with %d/%d mbufs only\n",
1243                                             rxq->queue_id, i, ring->ring_size);
1244                                 break;
1245                         }
1246                 }
1247                 rxr->rx_raw_prod = raw_prod;
1248                 raw_prod = RING_NEXT(raw_prod);
1249         }
1250
1251         /* Initialize dummy mbuf pointers for vector mode rx. */
1252         for (i = ring->ring_size;
1253              i < ring->ring_size + RTE_BNXT_DESCS_PER_LOOP; i++) {
1254                 rxr->rx_buf_ring[i] = &rxq->fake_mbuf;
1255         }
1256
1257         ring = rxr->ag_ring_struct;
1258         type = RX_PROD_AGG_BD_TYPE_RX_PROD_AGG;
1259         bnxt_init_rxbds(ring, type, size);
1260         raw_prod = rxr->ag_raw_prod;
1261
1262         for (i = 0; i < ring->ring_size; i++) {
1263                 if (unlikely(!rxr->ag_buf_ring[i])) {
1264                         if (bnxt_alloc_ag_data(rxq, rxr, raw_prod) != 0) {
1265                                 PMD_DRV_LOG(WARNING,
1266                                             "init'ed AG ring %d with %d/%d mbufs only\n",
1267                                             rxq->queue_id, i, ring->ring_size);
1268                                 break;
1269                         }
1270                 }
1271                 rxr->ag_raw_prod = raw_prod;
1272                 raw_prod = RING_NEXT(raw_prod);
1273         }
1274         PMD_DRV_LOG(DEBUG, "AGG Done!\n");
1275
1276         if (rxr->tpa_info) {
1277                 unsigned int max_aggs = BNXT_TPA_MAX_AGGS(rxq->bp);
1278
1279                 for (i = 0; i < max_aggs; i++) {
1280                         if (unlikely(!rxr->tpa_info[i].mbuf)) {
1281                                 rxr->tpa_info[i].mbuf =
1282                                         __bnxt_alloc_rx_data(rxq->mb_pool);
1283                                 if (!rxr->tpa_info[i].mbuf) {
1284                                         rte_atomic64_inc(&rxq->rx_mbuf_alloc_fail);
1285                                         return -ENOMEM;
1286                                 }
1287                         }
1288                 }
1289         }
1290         PMD_DRV_LOG(DEBUG, "TPA alloc Done!\n");
1291
1292         return 0;
1293 }