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 (sa->flags == IP4_TUNNEL) {
  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 }
  40
  41 static inline int
  42 create_session(struct ipsec_ctx *ipsec_ctx, struct ipsec_sa *sa)
  43 {
  44         struct rte_cryptodev_info cdev_info;
  45         unsigned long cdev_id_qp = 0;
  46         int32_t ret = 0;
  47         struct cdev_key key = { 0 };
  48
  49         key.lcore_id = (uint8_t)rte_lcore_id();
  50
  51         key.cipher_algo = (uint8_t)sa->cipher_algo;
  52         key.auth_algo = (uint8_t)sa->auth_algo;
  53         key.aead_algo = (uint8_t)sa->aead_algo;
  54
  55         if (sa->type == RTE_SECURITY_ACTION_TYPE_NONE) {
  56                 ret = rte_hash_lookup_data(ipsec_ctx->cdev_map, &key,
  57                                 (void **)&cdev_id_qp);
  58                 if (ret < 0) {
  59                         RTE_LOG(ERR, IPSEC,
  60                                 "No cryptodev: core %u, cipher_algo %u, "
  61                                 "auth_algo %u, aead_algo %u\n",
  62                                 key.lcore_id,
  63                                 key.cipher_algo,
  64                                 key.auth_algo,
  65                                 key.aead_algo);
  66                         return -1;
  67                 }
  68         }
  69
  70         RTE_LOG_DP(DEBUG, IPSEC, "Create session for SA spi %u on cryptodev "
  71                         "%u qp %u\n", sa->spi,
  72                         ipsec_ctx->tbl[cdev_id_qp].id,
  73                         ipsec_ctx->tbl[cdev_id_qp].qp);
  74
  75         if (sa->type != RTE_SECURITY_ACTION_TYPE_NONE) {
  76                 struct rte_security_session_conf sess_conf = {
  77                         .action_type = sa->type,
  78                         .protocol = RTE_SECURITY_PROTOCOL_IPSEC,
  79                         {.ipsec = {
  80                                 .spi = sa->spi,
  81                                 .salt = sa->salt,
  82                                 .options = { 0 },
  83                                 .direction = sa->direction,
  84                                 .proto = RTE_SECURITY_IPSEC_SA_PROTO_ESP,
  85                                 .mode = (sa->flags == IP4_TUNNEL ||
  86                                                 sa->flags == IP6_TUNNEL) ?
  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_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_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                                         RTE_SECURITY_IPSEC_SA_MODE_TUNNEL &&
 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                         sa->pattern[1].type = RTE_FLOW_ITEM_TYPE_IPV4;
 153                         sa->pattern[1].mask = &rte_flow_item_ipv4_mask;
 154                         if (sa->flags & IP6_TUNNEL) {
 155                                 sa->pattern[1].spec = &sa->ipv6_spec;
 156                                 memcpy(sa->ipv6_spec.hdr.dst_addr,
 157                                         sa->dst.ip.ip6.ip6_b, 16);
 158                                 memcpy(sa->ipv6_spec.hdr.src_addr,
 159                                        sa->src.ip.ip6.ip6_b, 16);
 160                         } else {
 161                                 sa->pattern[1].spec = &sa->ipv4_spec;
 162                                 sa->ipv4_spec.hdr.dst_addr = sa->dst.ip.ip4;
 163                                 sa->ipv4_spec.hdr.src_addr = sa->src.ip.ip4;
 164                         }
 165
 166                         sa->pattern[2].type = RTE_FLOW_ITEM_TYPE_ESP;
 167                         sa->pattern[2].spec = &sa->esp_spec;
 168                         sa->pattern[2].mask = &rte_flow_item_esp_mask;
 169                         sa->esp_spec.hdr.spi = sa->spi;
 170
 171                         sa->pattern[3].type = RTE_FLOW_ITEM_TYPE_END;
 172
 173                         sa->action[0].type = RTE_FLOW_ACTION_TYPE_SECURITY;
 174                         sa->action[0].conf = sa->sec_session;
 175
 176                         sa->action[1].type = RTE_FLOW_ACTION_TYPE_END;
 177
 178                         sa->attr.egress = (sa->direction ==
 179                                         RTE_SECURITY_IPSEC_SA_DIR_EGRESS);
 180                         sa->attr.ingress = (sa->direction ==
 181                                         RTE_SECURITY_IPSEC_SA_DIR_INGRESS);
 182                         if (sa->attr.ingress) {
 183                                 uint8_t rss_key[40];
 184                                 struct rte_eth_rss_conf rss_conf = {
 185                                         .rss_key = rss_key,
 186                                         .rss_key_len = 40,
 187                                 };
 188                                 struct rte_eth_dev *eth_dev;
 189                                 union {
 190                                         struct rte_flow_action_rss rss;
 191                                         struct {
 192                                         const struct rte_eth_rss_conf *rss_conf;
 193                                         uint16_t num;
 194                                         uint16_t queue[RTE_MAX_QUEUES_PER_PORT];
 195                                         } local;
 196                                 } action_rss;
 197                                 unsigned int i;
 198                                 unsigned int j;
 199
 200                                 sa->action[2].type = RTE_FLOW_ACTION_TYPE_END;
 201                                 /* Try RSS. */
 202                                 sa->action[1].type = RTE_FLOW_ACTION_TYPE_RSS;
 203                                 sa->action[1].conf = &action_rss;
 204                                 eth_dev = ctx->device;
 205                                 rte_eth_dev_rss_hash_conf_get(sa->portid,
 206                                                               &rss_conf);
 207                                 for (i = 0, j = 0;
 208                                      i < eth_dev->data->nb_rx_queues; ++i)
 209                                         if (eth_dev->data->rx_queues[i])
 210                                                 action_rss.local.queue[j++] = i;
 211                                 action_rss.local.num = j;
 212                                 action_rss.local.rss_conf = &rss_conf;
 213                                 ret = rte_flow_validate(sa->portid, &sa->attr,
 214                                                         sa->pattern, sa->action,
 215                                                         &err);
 216                                 if (!ret)
 217                                         goto flow_create;
 218                                 /* Try Queue. */
 219                                 sa->action[1].type = RTE_FLOW_ACTION_TYPE_QUEUE;
 220                                 sa->action[1].conf =
 221                                         &(struct rte_flow_action_queue){
 222                                         .index = 0,
 223                                 };
 224                                 ret = rte_flow_validate(sa->portid, &sa->attr,
 225                                                         sa->pattern, sa->action,
 226                                                         &err);
 227                                 if (ret)
 228                                         goto flow_create_failure;
 229                         }
 230 flow_create:
 231                         sa->flow = rte_flow_create(sa->portid,
 232                                 &sa->attr, sa->pattern, sa->action, &err);
 233                         if (sa->flow == NULL) {
 234 flow_create_failure:
 235                                 RTE_LOG(ERR, IPSEC,
 236                                         "Failed to create ipsec flow msg: %s\n",
 237                                         err.message);
 238                                 return -1;
 239                         }
 240                 } else if (sa->type ==
 241                                 RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL) {
 242                         struct rte_security_ctx *ctx =
 243                                         (struct rte_security_ctx *)
 244                                         rte_eth_dev_get_sec_ctx(sa->portid);
 245                         const struct rte_security_capability *sec_cap;
 246
 247                         if (ctx == NULL) {
 248                                 RTE_LOG(ERR, IPSEC,
 249                                 "Ethernet device doesn't have security features registered\n");
 250                                 return -1;
 251                         }
 252
 253                         /* Set IPsec parameters in conf */
 254                         set_ipsec_conf(sa, &(sess_conf.ipsec));
 255
 256                         /* Save SA as userdata for the security session. When
 257                          * the packet is received, this userdata will be
 258                          * retrieved using the metadata from the packet.
 259                          *
 260                          * This is required only for inbound SAs.
 261                          */
 262
 263                         if (sa->direction == RTE_SECURITY_IPSEC_SA_DIR_INGRESS)
 264                                 sess_conf.userdata = (void *) sa;
 265
 266                         sa->sec_session = rte_security_session_create(ctx,
 267                                         &sess_conf, ipsec_ctx->session_pool);
 268                         if (sa->sec_session == NULL) {
 269                                 RTE_LOG(ERR, IPSEC,
 270                                 "SEC Session init failed: err: %d\n", ret);
 271                                 return -1;
 272                         }
 273
 274                         sec_cap = rte_security_capabilities_get(ctx);
 275
 276                         if (sec_cap == NULL) {
 277                                 RTE_LOG(ERR, IPSEC,
 278                                 "No capabilities registered\n");
 279                                 return -1;
 280                         }
 281
 282                         /* iterate until ESP tunnel*/
 283                         while (sec_cap->action !=
 284                                         RTE_SECURITY_ACTION_TYPE_NONE) {
 285
 286                                 if (sec_cap->action == sa->type &&
 287                                     sec_cap->protocol ==
 288                                         RTE_SECURITY_PROTOCOL_IPSEC &&
 289                                     sec_cap->ipsec.mode ==
 290                                         RTE_SECURITY_IPSEC_SA_MODE_TUNNEL &&
 291                                     sec_cap->ipsec.direction == sa->direction)
 292                                         break;
 293                                 sec_cap++;
 294                         }
 295
 296                         if (sec_cap->action == RTE_SECURITY_ACTION_TYPE_NONE) {
 297                                 RTE_LOG(ERR, IPSEC,
 298                                 "No suitable security capability found\n");
 299                                 return -1;
 300                         }
 301
 302                         sa->ol_flags = sec_cap->ol_flags;
 303                         sa->security_ctx = ctx;
 304                 }
 305         } else {
 306                 sa->crypto_session = rte_cryptodev_sym_session_create(
 307                                 ipsec_ctx->session_pool);
 308                 rte_cryptodev_sym_session_init(ipsec_ctx->tbl[cdev_id_qp].id,
 309                                 sa->crypto_session, sa->xforms,
 310                                 ipsec_ctx->session_pool);
 311
 312                 rte_cryptodev_info_get(ipsec_ctx->tbl[cdev_id_qp].id,
 313                                 &cdev_info);
 314                 if (cdev_info.sym.max_nb_sessions_per_qp > 0) {
 315                         ret = rte_cryptodev_queue_pair_attach_sym_session(
 316                                         ipsec_ctx->tbl[cdev_id_qp].id,
 317                                         ipsec_ctx->tbl[cdev_id_qp].qp,
 318                                         sa->crypto_session);
 319                         if (ret < 0) {
 320                                 RTE_LOG(ERR, IPSEC,
 321                                         "Session cannot be attached to qp %u\n",
 322                                         ipsec_ctx->tbl[cdev_id_qp].qp);
 323                                 return -1;
 324                         }
 325                 }
 326         }
 327         sa->cdev_id_qp = cdev_id_qp;
 328
 329         return 0;
 330 }
 331
 332 static inline void
 333 enqueue_cop(struct cdev_qp *cqp, struct rte_crypto_op *cop)
 334 {
 335         int32_t ret, i;
 336
 337         cqp->buf[cqp->len++] = cop;
 338
 339         if (cqp->len == MAX_PKT_BURST) {
 340                 ret = rte_cryptodev_enqueue_burst(cqp->id, cqp->qp,
 341                                 cqp->buf, cqp->len);
 342                 if (ret < cqp->len) {
 343                         RTE_LOG_DP(DEBUG, IPSEC, "Cryptodev %u queue %u:"
 344                                         " enqueued %u crypto ops out of %u\n",
 345                                          cqp->id, cqp->qp,
 346                                          ret, cqp->len);
 347                         for (i = ret; i < cqp->len; i++)
 348                                 rte_pktmbuf_free(cqp->buf[i]->sym->m_src);
 349                 }
 350                 cqp->in_flight += ret;
 351                 cqp->len = 0;
 352         }
 353 }
 354
 355 static inline void
 356 ipsec_enqueue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx,
 357                 struct rte_mbuf *pkts[], struct ipsec_sa *sas[],
 358                 uint16_t nb_pkts)
 359 {
 360         int32_t ret = 0, i;
 361         struct ipsec_mbuf_metadata *priv;
 362         struct rte_crypto_sym_op *sym_cop;
 363         struct ipsec_sa *sa;
 364         struct cdev_qp *cqp;
 365
 366         for (i = 0; i < nb_pkts; i++) {
 367                 if (unlikely(sas[i] == NULL)) {
 368                         rte_pktmbuf_free(pkts[i]);
 369                         continue;
 370                 }
 371
 372                 rte_prefetch0(sas[i]);
 373                 rte_prefetch0(pkts[i]);
 374
 375                 priv = get_priv(pkts[i]);
 376                 sa = sas[i];
 377                 priv->sa = sa;
 378
 379                 switch (sa->type) {
 380                 case RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL:
 381                         priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC;
 382                         priv->cop.status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 383
 384                         rte_prefetch0(&priv->sym_cop);
 385
 386                         if ((unlikely(sa->sec_session == NULL)) &&
 387                                         create_session(ipsec_ctx, sa)) {
 388                                 rte_pktmbuf_free(pkts[i]);
 389                                 continue;
 390                         }
 391
 392                         sym_cop = get_sym_cop(&priv->cop);
 393                         sym_cop->m_src = pkts[i];
 394
 395                         rte_security_attach_session(&priv->cop,
 396                                         sa->sec_session);
 397                         break;
 398                 case RTE_SECURITY_ACTION_TYPE_NONE:
 399
 400                         priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC;
 401                         priv->cop.status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 402
 403                         rte_prefetch0(&priv->sym_cop);
 404
 405                         if ((unlikely(sa->crypto_session == NULL)) &&
 406                                         create_session(ipsec_ctx, sa)) {
 407                                 rte_pktmbuf_free(pkts[i]);
 408                                 continue;
 409                         }
 410
 411                         rte_crypto_op_attach_sym_session(&priv->cop,
 412                                         sa->crypto_session);
 413
 414                         ret = xform_func(pkts[i], sa, &priv->cop);
 415                         if (unlikely(ret)) {
 416                                 rte_pktmbuf_free(pkts[i]);
 417                                 continue;
 418                         }
 419                         break;
 420                 case RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL:
 421                         if ((unlikely(sa->sec_session == NULL)) &&
 422                                         create_session(ipsec_ctx, sa)) {
 423                                 rte_pktmbuf_free(pkts[i]);
 424                                 continue;
 425                         }
 426
 427                         cqp = &ipsec_ctx->tbl[sa->cdev_id_qp];
 428                         cqp->ol_pkts[cqp->ol_pkts_cnt++] = pkts[i];
 429                         if (sa->ol_flags & RTE_SECURITY_TX_OLOAD_NEED_MDATA)
 430                                 rte_security_set_pkt_metadata(
 431                                                 sa->security_ctx,
 432                                                 sa->sec_session, pkts[i], NULL);
 433                         continue;
 434                 case RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO:
 435                         priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC;
 436                         priv->cop.status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 437
 438                         rte_prefetch0(&priv->sym_cop);
 439
 440                         if ((unlikely(sa->sec_session == NULL)) &&
 441                                         create_session(ipsec_ctx, sa)) {
 442                                 rte_pktmbuf_free(pkts[i]);
 443                                 continue;
 444                         }
 445
 446                         rte_security_attach_session(&priv->cop,
 447                                         sa->sec_session);
 448
 449                         ret = xform_func(pkts[i], sa, &priv->cop);
 450                         if (unlikely(ret)) {
 451                                 rte_pktmbuf_free(pkts[i]);
 452                                 continue;
 453                         }
 454
 455                         cqp = &ipsec_ctx->tbl[sa->cdev_id_qp];
 456                         cqp->ol_pkts[cqp->ol_pkts_cnt++] = pkts[i];
 457                         if (sa->ol_flags & RTE_SECURITY_TX_OLOAD_NEED_MDATA)
 458                                 rte_security_set_pkt_metadata(
 459                                                 sa->security_ctx,
 460                                                 sa->sec_session, pkts[i], NULL);
 461                         continue;
 462                 }
 463
 464                 RTE_ASSERT(sa->cdev_id_qp < ipsec_ctx->nb_qps);
 465                 enqueue_cop(&ipsec_ctx->tbl[sa->cdev_id_qp], &priv->cop);
 466         }
 467 }
 468
 469 static inline int
 470 ipsec_dequeue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx,
 471               struct rte_mbuf *pkts[], uint16_t max_pkts)
 472 {
 473         int32_t nb_pkts = 0, ret = 0, i, j, nb_cops;
 474         struct ipsec_mbuf_metadata *priv;
 475         struct rte_crypto_op *cops[max_pkts];
 476         struct ipsec_sa *sa;
 477         struct rte_mbuf *pkt;
 478
 479         for (i = 0; i < ipsec_ctx->nb_qps && nb_pkts < max_pkts;) {
 480                 struct cdev_qp *cqp;
 481
 482                 cqp = &ipsec_ctx->tbl[ipsec_ctx->last_qp];
 483
 484                 while (cqp->ol_pkts_cnt > 0 && nb_pkts < max_pkts) {
 485                         pkt = cqp->ol_pkts[--cqp->ol_pkts_cnt];
 486                         rte_prefetch0(pkt);
 487                         priv = get_priv(pkt);
 488                         sa = priv->sa;
 489                         ret = xform_func(pkt, sa, &priv->cop);
 490                         if (unlikely(ret)) {
 491                                 rte_pktmbuf_free(pkt);
 492                                 continue;
 493                         }
 494                         pkts[nb_pkts++] = pkt;
 495                 }
 496
 497                 if (cqp->in_flight == 0) {
 498                         ipsec_ctx->last_qp++;
 499                         if (ipsec_ctx->last_qp == ipsec_ctx->nb_qps)
 500                                 ipsec_ctx->last_qp %= ipsec_ctx->nb_qps;
 501                         i++;
 502                         continue;
 503                 }
 504
 505                 nb_cops = rte_cryptodev_dequeue_burst(cqp->id, cqp->qp,
 506                                 cops, max_pkts - nb_pkts);
 507
 508                 cqp->in_flight -= nb_cops;
 509
 510                 for (j = 0; j < nb_cops; j++) {
 511                         pkt = cops[j]->sym->m_src;
 512                         rte_prefetch0(pkt);
 513
 514                         priv = get_priv(pkt);
 515                         sa = priv->sa;
 516
 517                         RTE_ASSERT(sa != NULL);
 518
 519                         if (sa->type == RTE_SECURITY_ACTION_TYPE_NONE) {
 520                                 ret = xform_func(pkt, sa, cops[j]);
 521                                 if (unlikely(ret)) {
 522                                         rte_pktmbuf_free(pkt);
 523                                         continue;
 524                                 }
 525                         }
 526                         pkts[nb_pkts++] = pkt;
 527                         if (cqp->in_flight < max_pkts) {
 528                                 ipsec_ctx->last_qp++;
 529                                 if (ipsec_ctx->last_qp == ipsec_ctx->nb_qps)
 530                                         ipsec_ctx->last_qp %= ipsec_ctx->nb_qps;
 531                                 i++;
 532                         }
 533                 }
 534         }
 535
 536         /* return packets */
 537         return nb_pkts;
 538 }
 539
 540 uint16_t
 541 ipsec_inbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
 542                 uint16_t nb_pkts, uint16_t len)
 543 {
 544         struct ipsec_sa *sas[nb_pkts];
 545
 546         inbound_sa_lookup(ctx->sa_ctx, pkts, sas, nb_pkts);
 547
 548         ipsec_enqueue(esp_inbound, ctx, pkts, sas, nb_pkts);
 549
 550         return ipsec_dequeue(esp_inbound_post, ctx, pkts, len);
 551 }
 552
 553 uint16_t
 554 ipsec_outbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
 555                 uint32_t sa_idx[], uint16_t nb_pkts, uint16_t len)
 556 {
 557         struct ipsec_sa *sas[nb_pkts];
 558
 559         outbound_sa_lookup(ctx->sa_ctx, sa_idx, sas, nb_pkts);
 560
 561         ipsec_enqueue(esp_outbound, ctx, pkts, sas, nb_pkts);
 562
 563         return ipsec_dequeue(esp_outbound_post, ctx, pkts, len);
 564 }