examples/ipsec-secgw/ipsec.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2016-2017 Intel Corporation
   3  */
   4 #include <sys/types.h>
   5 #include <netinet/in.h>
   6 #include <netinet/ip.h>
   7
   8 #include <rte_branch_prediction.h>
   9 #include <rte_log.h>
  10 #include <rte_crypto.h>
  11 #include <rte_security.h>
  12 #include <rte_cryptodev.h>
  13 #include <rte_ethdev.h>
  14 #include <rte_mbuf.h>
  15 #include <rte_hash.h>
  16
  17 #include "ipsec.h"
  18 #include "esp.h"
  19
  20 static inline void
  21 set_ipsec_conf(struct ipsec_sa *sa, struct rte_security_ipsec_xform *ipsec)
  22 {
  23         if (ipsec->mode == RTE_SECURITY_IPSEC_SA_MODE_TUNNEL) {
  24                 struct rte_security_ipsec_tunnel_param *tunnel =
  25                                 &ipsec->tunnel;
  26                 if (IS_IP4_TUNNEL(sa->flags)) {
  27                         tunnel->type =
  28                                 RTE_SECURITY_IPSEC_TUNNEL_IPV4;
  29                         tunnel->ipv4.ttl = IPDEFTTL;
  30
  31                         memcpy((uint8_t *)&tunnel->ipv4.src_ip,
  32                                 (uint8_t *)&sa->src.ip.ip4, 4);
  33
  34                         memcpy((uint8_t *)&tunnel->ipv4.dst_ip,
  35                                 (uint8_t *)&sa->dst.ip.ip4, 4);
  36                 }
  37                 /* TODO support for Transport and IPV6 tunnel */
  38         }
  39         ipsec->esn_soft_limit = IPSEC_OFFLOAD_ESN_SOFTLIMIT;
  40 }
  41
  42 int
  43 create_session(struct ipsec_ctx *ipsec_ctx, struct ipsec_sa *sa)
  44 {
  45         struct rte_cryptodev_info cdev_info;
  46         unsigned long cdev_id_qp = 0;
  47         int32_t ret = 0;
  48         struct cdev_key key = { 0 };
  49
  50         key.lcore_id = (uint8_t)rte_lcore_id();
  51
  52         key.cipher_algo = (uint8_t)sa->cipher_algo;
  53         key.auth_algo = (uint8_t)sa->auth_algo;
  54         key.aead_algo = (uint8_t)sa->aead_algo;
  55
  56         if (sa->type == RTE_SECURITY_ACTION_TYPE_NONE) {
  57                 ret = rte_hash_lookup_data(ipsec_ctx->cdev_map, &key,
  58                                 (void **)&cdev_id_qp);
  59                 if (ret < 0) {
  60                         RTE_LOG(ERR, IPSEC,
  61                                 "No cryptodev: core %u, cipher_algo %u, "
  62                                 "auth_algo %u, aead_algo %u\n",
  63                                 key.lcore_id,
  64                                 key.cipher_algo,
  65                                 key.auth_algo,
  66                                 key.aead_algo);
  67                         return -1;
  68                 }
  69         }
  70
  71         RTE_LOG_DP(DEBUG, IPSEC, "Create session for SA spi %u on cryptodev "
  72                         "%u qp %u\n", sa->spi,
  73                         ipsec_ctx->tbl[cdev_id_qp].id,
  74                         ipsec_ctx->tbl[cdev_id_qp].qp);
  75
  76         if (sa->type != RTE_SECURITY_ACTION_TYPE_NONE) {
  77                 struct rte_security_session_conf sess_conf = {
  78                         .action_type = sa->type,
  79                         .protocol = RTE_SECURITY_PROTOCOL_IPSEC,
  80                         {.ipsec = {
  81                                 .spi = sa->spi,
  82                                 .salt = sa->salt,
  83                                 .options = { 0 },
  84                                 .direction = sa->direction,
  85                                 .proto = RTE_SECURITY_IPSEC_SA_PROTO_ESP,
  86                                 .mode = (IS_TUNNEL(sa->flags)) ?
  87                                         RTE_SECURITY_IPSEC_SA_MODE_TUNNEL :
  88                                         RTE_SECURITY_IPSEC_SA_MODE_TRANSPORT,
  89                         } },
  90                         .crypto_xform = sa->xforms,
  91                         .userdata = NULL,
  92
  93                 };
  94
  95                 if (sa->type == RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL) {
  96                         struct rte_security_ctx *ctx = (struct rte_security_ctx *)
  97                                                         rte_cryptodev_get_sec_ctx(
  98                                                         ipsec_ctx->tbl[cdev_id_qp].id);
  99
 100                         /* Set IPsec parameters in conf */
 101                         set_ipsec_conf(sa, &(sess_conf.ipsec));
 102
 103                         sa->sec_session = rte_security_session_create(ctx,
 104                                         &sess_conf, ipsec_ctx->session_priv_pool);
 105                         if (sa->sec_session == NULL) {
 106                                 RTE_LOG(ERR, IPSEC,
 107                                 "SEC Session init failed: err: %d\n", ret);
 108                                 return -1;
 109                         }
 110                 } else if (sa->type == RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO) {
 111                         struct rte_flow_error err;
 112                         struct rte_security_ctx *ctx = (struct rte_security_ctx *)
 113                                                         rte_eth_dev_get_sec_ctx(
 114                                                         sa->portid);
 115                         const struct rte_security_capability *sec_cap;
 116                         int ret = 0;
 117
 118                         sa->sec_session = rte_security_session_create(ctx,
 119                                         &sess_conf, ipsec_ctx->session_priv_pool);
 120                         if (sa->sec_session == NULL) {
 121                                 RTE_LOG(ERR, IPSEC,
 122                                 "SEC Session init failed: err: %d\n", ret);
 123                                 return -1;
 124                         }
 125
 126                         sec_cap = rte_security_capabilities_get(ctx);
 127
 128                         /* iterate until ESP tunnel*/
 129                         while (sec_cap->action !=
 130                                         RTE_SECURITY_ACTION_TYPE_NONE) {
 131
 132                                 if (sec_cap->action == sa->type &&
 133                                     sec_cap->protocol ==
 134                                         RTE_SECURITY_PROTOCOL_IPSEC &&
 135                                     sec_cap->ipsec.mode ==
 136                                         sess_conf.ipsec.mode &&
 137                                     sec_cap->ipsec.direction == sa->direction)
 138                                         break;
 139                                 sec_cap++;
 140                         }
 141
 142                         if (sec_cap->action == RTE_SECURITY_ACTION_TYPE_NONE) {
 143                                 RTE_LOG(ERR, IPSEC,
 144                                 "No suitable security capability found\n");
 145                                 return -1;
 146                         }
 147
 148                         sa->ol_flags = sec_cap->ol_flags;
 149                         sa->security_ctx = ctx;
 150                         sa->pattern[0].type = RTE_FLOW_ITEM_TYPE_ETH;
 151
 152                         if (IS_IP6(sa->flags)) {
 153                                 sa->pattern[1].mask = &rte_flow_item_ipv6_mask;
 154                                 sa->pattern[1].type = RTE_FLOW_ITEM_TYPE_IPV6;
 155                                 sa->pattern[1].spec = &sa->ipv6_spec;
 156
 157                                 memcpy(sa->ipv6_spec.hdr.dst_addr,
 158                                         sa->dst.ip.ip6.ip6_b, 16);
 159                                 memcpy(sa->ipv6_spec.hdr.src_addr,
 160                                        sa->src.ip.ip6.ip6_b, 16);
 161                         } else if (IS_IP4(sa->flags)) {
 162                                 sa->pattern[1].mask = &rte_flow_item_ipv4_mask;
 163                                 sa->pattern[1].type = RTE_FLOW_ITEM_TYPE_IPV4;
 164                                 sa->pattern[1].spec = &sa->ipv4_spec;
 165
 166                                 sa->ipv4_spec.hdr.dst_addr = sa->dst.ip.ip4;
 167                                 sa->ipv4_spec.hdr.src_addr = sa->src.ip.ip4;
 168                         }
 169
 170                         sa->pattern[2].type = RTE_FLOW_ITEM_TYPE_ESP;
 171                         sa->pattern[2].spec = &sa->esp_spec;
 172                         sa->pattern[2].mask = &rte_flow_item_esp_mask;
 173                         sa->esp_spec.hdr.spi = rte_cpu_to_be_32(sa->spi);
 174
 175                         sa->pattern[3].type = RTE_FLOW_ITEM_TYPE_END;
 176
 177                         sa->action[0].type = RTE_FLOW_ACTION_TYPE_SECURITY;
 178                         sa->action[0].conf = sa->sec_session;
 179
 180                         sa->action[1].type = RTE_FLOW_ACTION_TYPE_END;
 181
 182                         sa->attr.egress = (sa->direction ==
 183                                         RTE_SECURITY_IPSEC_SA_DIR_EGRESS);
 184                         sa->attr.ingress = (sa->direction ==
 185                                         RTE_SECURITY_IPSEC_SA_DIR_INGRESS);
 186                         if (sa->attr.ingress) {
 187                                 uint8_t rss_key[40];
 188                                 struct rte_eth_rss_conf rss_conf = {
 189                                         .rss_key = rss_key,
 190                                         .rss_key_len = 40,
 191                                 };
 192                                 struct rte_eth_dev *eth_dev;
 193                                 uint16_t queue[RTE_MAX_QUEUES_PER_PORT];
 194                                 struct rte_flow_action_rss action_rss;
 195                                 unsigned int i;
 196                                 unsigned int j;
 197
 198                                 sa->action[2].type = RTE_FLOW_ACTION_TYPE_END;
 199                                 /* Try RSS. */
 200                                 sa->action[1].type = RTE_FLOW_ACTION_TYPE_RSS;
 201                                 sa->action[1].conf = &action_rss;
 202                                 eth_dev = ctx->device;
 203                                 rte_eth_dev_rss_hash_conf_get(sa->portid,
 204                                                               &rss_conf);
 205                                 for (i = 0, j = 0;
 206                                      i < eth_dev->data->nb_rx_queues; ++i)
 207                                         if (eth_dev->data->rx_queues[i])
 208                                                 queue[j++] = i;
 209                                 action_rss = (struct rte_flow_action_rss){
 210                                         .types = rss_conf.rss_hf,
 211                                         .key_len = rss_conf.rss_key_len,
 212                                         .queue_num = j,
 213                                         .key = rss_key,
 214                                         .queue = queue,
 215                                 };
 216                                 ret = rte_flow_validate(sa->portid, &sa->attr,
 217                                                         sa->pattern, sa->action,
 218                                                         &err);
 219                                 if (!ret)
 220                                         goto flow_create;
 221                                 /* Try Queue. */
 222                                 sa->action[1].type = RTE_FLOW_ACTION_TYPE_QUEUE;
 223                                 sa->action[1].conf =
 224                                         &(struct rte_flow_action_queue){
 225                                         .index = 0,
 226                                 };
 227                                 ret = rte_flow_validate(sa->portid, &sa->attr,
 228                                                         sa->pattern, sa->action,
 229                                                         &err);
 230                                 /* Try End. */
 231                                 sa->action[1].type = RTE_FLOW_ACTION_TYPE_END;
 232                                 sa->action[1].conf = NULL;
 233                                 ret = rte_flow_validate(sa->portid, &sa->attr,
 234                                                         sa->pattern, sa->action,
 235                                                         &err);
 236                                 if (ret)
 237                                         goto flow_create_failure;
 238                         } else if (sa->attr.egress &&
 239                                    (sa->ol_flags &
 240                                     RTE_SECURITY_TX_HW_TRAILER_OFFLOAD)) {
 241                                 sa->action[1].type =
 242                                         RTE_FLOW_ACTION_TYPE_PASSTHRU;
 243                                 sa->action[2].type =
 244                                         RTE_FLOW_ACTION_TYPE_END;
 245                         }
 246 flow_create:
 247                         sa->flow = rte_flow_create(sa->portid,
 248                                 &sa->attr, sa->pattern, sa->action, &err);
 249                         if (sa->flow == NULL) {
 250 flow_create_failure:
 251                                 RTE_LOG(ERR, IPSEC,
 252                                         "Failed to create ipsec flow msg: %s\n",
 253                                         err.message);
 254                                 return -1;
 255                         }
 256                 } else if (sa->type ==
 257                                 RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL) {
 258                         struct rte_security_ctx *ctx =
 259                                         (struct rte_security_ctx *)
 260                                         rte_eth_dev_get_sec_ctx(sa->portid);
 261                         const struct rte_security_capability *sec_cap;
 262
 263                         if (ctx == NULL) {
 264                                 RTE_LOG(ERR, IPSEC,
 265                                 "Ethernet device doesn't have security features registered\n");
 266                                 return -1;
 267                         }
 268
 269                         /* Set IPsec parameters in conf */
 270                         set_ipsec_conf(sa, &(sess_conf.ipsec));
 271
 272                         /* Save SA as userdata for the security session. When
 273                          * the packet is received, this userdata will be
 274                          * retrieved using the metadata from the packet.
 275                          *
 276                          * The PMD is expected to set similar metadata for other
 277                          * operations, like rte_eth_event, which are tied to
 278                          * security session. In such cases, the userdata could
 279                          * be obtained to uniquely identify the security
 280                          * parameters denoted.
 281                          */
 282
 283                         sess_conf.userdata = (void *) sa;
 284
 285                         sa->sec_session = rte_security_session_create(ctx,
 286                                         &sess_conf, ipsec_ctx->session_pool);
 287                         if (sa->sec_session == NULL) {
 288                                 RTE_LOG(ERR, IPSEC,
 289                                 "SEC Session init failed: err: %d\n", ret);
 290                                 return -1;
 291                         }
 292
 293                         sec_cap = rte_security_capabilities_get(ctx);
 294
 295                         if (sec_cap == NULL) {
 296                                 RTE_LOG(ERR, IPSEC,
 297                                 "No capabilities registered\n");
 298                                 return -1;
 299                         }
 300
 301                         /* iterate until ESP tunnel*/
 302                         while (sec_cap->action !=
 303                                         RTE_SECURITY_ACTION_TYPE_NONE) {
 304
 305                                 if (sec_cap->action == sa->type &&
 306                                     sec_cap->protocol ==
 307                                         RTE_SECURITY_PROTOCOL_IPSEC &&
 308                                     sec_cap->ipsec.mode ==
 309                                         sess_conf.ipsec.mode &&
 310                                     sec_cap->ipsec.direction == sa->direction)
 311                                         break;
 312                                 sec_cap++;
 313                         }
 314
 315                         if (sec_cap->action == RTE_SECURITY_ACTION_TYPE_NONE) {
 316                                 RTE_LOG(ERR, IPSEC,
 317                                 "No suitable security capability found\n");
 318                                 return -1;
 319                         }
 320
 321                         sa->ol_flags = sec_cap->ol_flags;
 322                         sa->security_ctx = ctx;
 323                 }
 324         } else {
 325                 sa->crypto_session = rte_cryptodev_sym_session_create(
 326                                 ipsec_ctx->session_pool);
 327                 rte_cryptodev_sym_session_init(ipsec_ctx->tbl[cdev_id_qp].id,
 328                                 sa->crypto_session, sa->xforms,
 329                                 ipsec_ctx->session_priv_pool);
 330
 331                 rte_cryptodev_info_get(ipsec_ctx->tbl[cdev_id_qp].id,
 332                                 &cdev_info);
 333         }
 334         sa->cdev_id_qp = cdev_id_qp;
 335
 336         return 0;
 337 }
 338
 339 /*
 340  * queue crypto-ops into PMD queue.
 341  */
 342 void
 343 enqueue_cop_burst(struct cdev_qp *cqp)
 344 {
 345         uint32_t i, len, ret;
 346
 347         len = cqp->len;
 348         ret = rte_cryptodev_enqueue_burst(cqp->id, cqp->qp, cqp->buf, len);
 349         if (ret < len) {
 350                 RTE_LOG_DP(DEBUG, IPSEC, "Cryptodev %u queue %u:"
 351                         " enqueued %u crypto ops out of %u\n",
 352                         cqp->id, cqp->qp, ret, len);
 353                         /* drop packets that we fail to enqueue */
 354                         for (i = ret; i < len; i++)
 355                                 rte_pktmbuf_free(cqp->buf[i]->sym->m_src);
 356         }
 357         cqp->in_flight += ret;
 358         cqp->len = 0;
 359 }
 360
 361 static inline void
 362 enqueue_cop(struct cdev_qp *cqp, struct rte_crypto_op *cop)
 363 {
 364         cqp->buf[cqp->len++] = cop;
 365
 366         if (cqp->len == MAX_PKT_BURST)
 367                 enqueue_cop_burst(cqp);
 368 }
 369
 370 static inline void
 371 ipsec_enqueue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx,
 372                 struct rte_mbuf *pkts[], struct ipsec_sa *sas[],
 373                 uint16_t nb_pkts)
 374 {
 375         int32_t ret = 0, i;
 376         struct ipsec_mbuf_metadata *priv;
 377         struct rte_crypto_sym_op *sym_cop;
 378         struct ipsec_sa *sa;
 379
 380         for (i = 0; i < nb_pkts; i++) {
 381                 if (unlikely(sas[i] == NULL)) {
 382                         rte_pktmbuf_free(pkts[i]);
 383                         continue;
 384                 }
 385
 386                 rte_prefetch0(sas[i]);
 387                 rte_prefetch0(pkts[i]);
 388
 389                 priv = get_priv(pkts[i]);
 390                 sa = sas[i];
 391                 priv->sa = sa;
 392
 393                 switch (sa->type) {
 394                 case RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL:
 395                         priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC;
 396                         priv->cop.status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 397
 398                         rte_prefetch0(&priv->sym_cop);
 399
 400                         if ((unlikely(sa->sec_session == NULL)) &&
 401                                         create_session(ipsec_ctx, sa)) {
 402                                 rte_pktmbuf_free(pkts[i]);
 403                                 continue;
 404                         }
 405
 406                         sym_cop = get_sym_cop(&priv->cop);
 407                         sym_cop->m_src = pkts[i];
 408
 409                         rte_security_attach_session(&priv->cop,
 410                                         sa->sec_session);
 411                         break;
 412                 case RTE_SECURITY_ACTION_TYPE_NONE:
 413
 414                         priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC;
 415                         priv->cop.status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 416
 417                         rte_prefetch0(&priv->sym_cop);
 418
 419                         if ((unlikely(sa->crypto_session == NULL)) &&
 420                                         create_session(ipsec_ctx, sa)) {
 421                                 rte_pktmbuf_free(pkts[i]);
 422                                 continue;
 423                         }
 424
 425                         rte_crypto_op_attach_sym_session(&priv->cop,
 426                                         sa->crypto_session);
 427
 428                         ret = xform_func(pkts[i], sa, &priv->cop);
 429                         if (unlikely(ret)) {
 430                                 rte_pktmbuf_free(pkts[i]);
 431                                 continue;
 432                         }
 433                         break;
 434                 case RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL:
 435                         if ((unlikely(sa->sec_session == NULL)) &&
 436                                         create_session(ipsec_ctx, sa)) {
 437                                 rte_pktmbuf_free(pkts[i]);
 438                                 continue;
 439                         }
 440
 441                         ipsec_ctx->ol_pkts[ipsec_ctx->ol_pkts_cnt++] = pkts[i];
 442                         if (sa->ol_flags & RTE_SECURITY_TX_OLOAD_NEED_MDATA)
 443                                 rte_security_set_pkt_metadata(
 444                                                 sa->security_ctx,
 445                                                 sa->sec_session, pkts[i], NULL);
 446                         continue;
 447                 case RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO:
 448                         priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC;
 449                         priv->cop.status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 450
 451                         rte_prefetch0(&priv->sym_cop);
 452
 453                         if ((unlikely(sa->sec_session == NULL)) &&
 454                                         create_session(ipsec_ctx, sa)) {
 455                                 rte_pktmbuf_free(pkts[i]);
 456                                 continue;
 457                         }
 458
 459                         rte_security_attach_session(&priv->cop,
 460                                         sa->sec_session);
 461
 462                         ret = xform_func(pkts[i], sa, &priv->cop);
 463                         if (unlikely(ret)) {
 464                                 rte_pktmbuf_free(pkts[i]);
 465                                 continue;
 466                         }
 467
 468                         ipsec_ctx->ol_pkts[ipsec_ctx->ol_pkts_cnt++] = pkts[i];
 469                         if (sa->ol_flags & RTE_SECURITY_TX_OLOAD_NEED_MDATA)
 470                                 rte_security_set_pkt_metadata(
 471                                                 sa->security_ctx,
 472                                                 sa->sec_session, pkts[i], NULL);
 473                         continue;
 474                 }
 475
 476                 RTE_ASSERT(sa->cdev_id_qp < ipsec_ctx->nb_qps);
 477                 enqueue_cop(&ipsec_ctx->tbl[sa->cdev_id_qp], &priv->cop);
 478         }
 479 }
 480
 481 static inline int32_t
 482 ipsec_inline_dequeue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx,
 483               struct rte_mbuf *pkts[], uint16_t max_pkts)
 484 {
 485         int32_t nb_pkts, ret;
 486         struct ipsec_mbuf_metadata *priv;
 487         struct ipsec_sa *sa;
 488         struct rte_mbuf *pkt;
 489
 490         nb_pkts = 0;
 491         while (ipsec_ctx->ol_pkts_cnt > 0 && nb_pkts < max_pkts) {
 492                 pkt = ipsec_ctx->ol_pkts[--ipsec_ctx->ol_pkts_cnt];
 493                 rte_prefetch0(pkt);
 494                 priv = get_priv(pkt);
 495                 sa = priv->sa;
 496                 ret = xform_func(pkt, sa, &priv->cop);
 497                 if (unlikely(ret)) {
 498                         rte_pktmbuf_free(pkt);
 499                         continue;
 500                 }
 501                 pkts[nb_pkts++] = pkt;
 502         }
 503
 504         return nb_pkts;
 505 }
 506
 507 static inline int
 508 ipsec_dequeue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx,
 509               struct rte_mbuf *pkts[], uint16_t max_pkts)
 510 {
 511         int32_t nb_pkts = 0, ret = 0, i, j, nb_cops;
 512         struct ipsec_mbuf_metadata *priv;
 513         struct rte_crypto_op *cops[max_pkts];
 514         struct ipsec_sa *sa;
 515         struct rte_mbuf *pkt;
 516
 517         for (i = 0; i < ipsec_ctx->nb_qps && nb_pkts < max_pkts; i++) {
 518                 struct cdev_qp *cqp;
 519
 520                 cqp = &ipsec_ctx->tbl[ipsec_ctx->last_qp++];
 521                 if (ipsec_ctx->last_qp == ipsec_ctx->nb_qps)
 522                         ipsec_ctx->last_qp %= ipsec_ctx->nb_qps;
 523
 524                 if (cqp->in_flight == 0)
 525                         continue;
 526
 527                 nb_cops = rte_cryptodev_dequeue_burst(cqp->id, cqp->qp,
 528                                 cops, max_pkts - nb_pkts);
 529
 530                 cqp->in_flight -= nb_cops;
 531
 532                 for (j = 0; j < nb_cops; j++) {
 533                         pkt = cops[j]->sym->m_src;
 534                         rte_prefetch0(pkt);
 535
 536                         priv = get_priv(pkt);
 537                         sa = priv->sa;
 538
 539                         RTE_ASSERT(sa != NULL);
 540
 541                         if (sa->type == RTE_SECURITY_ACTION_TYPE_NONE) {
 542                                 ret = xform_func(pkt, sa, cops[j]);
 543                                 if (unlikely(ret)) {
 544                                         rte_pktmbuf_free(pkt);
 545                                         continue;
 546                                 }
 547                         }
 548                         pkts[nb_pkts++] = pkt;
 549                 }
 550         }
 551
 552         /* return packets */
 553         return nb_pkts;
 554 }
 555
 556 uint16_t
 557 ipsec_inbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
 558                 uint16_t nb_pkts, uint16_t len)
 559 {
 560         struct ipsec_sa *sas[nb_pkts];
 561
 562         inbound_sa_lookup(ctx->sa_ctx, pkts, sas, nb_pkts);
 563
 564         ipsec_enqueue(esp_inbound, ctx, pkts, sas, nb_pkts);
 565
 566         return ipsec_inline_dequeue(esp_inbound_post, ctx, pkts, len);
 567 }
 568
 569 uint16_t
 570 ipsec_inbound_cqp_dequeue(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
 571                 uint16_t len)
 572 {
 573         return ipsec_dequeue(esp_inbound_post, ctx, pkts, len);
 574 }
 575
 576 uint16_t
 577 ipsec_outbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
 578                 uint32_t sa_idx[], uint16_t nb_pkts, uint16_t len)
 579 {
 580         struct ipsec_sa *sas[nb_pkts];
 581
 582         outbound_sa_lookup(ctx->sa_ctx, sa_idx, sas, nb_pkts);
 583
 584         ipsec_enqueue(esp_outbound, ctx, pkts, sas, nb_pkts);
 585
 586         return ipsec_inline_dequeue(esp_outbound_post, ctx, pkts, len);
 587 }
 588
 589 uint16_t
 590 ipsec_outbound_cqp_dequeue(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
 591                 uint16_t len)
 592 {
 593         return ipsec_dequeue(esp_outbound_post, ctx, pkts, len);
 594 }