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         ipsec->esn_soft_limit = IPSEC_OFFLOAD_ESN_SOFTLIMIT;
  40 }
  41
  42 static inline 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 = (sa->flags == IP4_TUNNEL ||
  87                                                 sa->flags == IP6_TUNNEL) ?
  88                                         RTE_SECURITY_IPSEC_SA_MODE_TUNNEL :
  89                                         RTE_SECURITY_IPSEC_SA_MODE_TRANSPORT,
  90                         } },
  91                         .crypto_xform = sa->xforms,
  92                         .userdata = NULL,
  93
  94                 };
  95
  96                 if (sa->type == RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL) {
  97                         struct rte_security_ctx *ctx = (struct rte_security_ctx *)
  98                                                         rte_cryptodev_get_sec_ctx(
  99                                                         ipsec_ctx->tbl[cdev_id_qp].id);
 100
 101                         /* Set IPsec parameters in conf */
 102                         set_ipsec_conf(sa, &(sess_conf.ipsec));
 103
 104                         sa->sec_session = rte_security_session_create(ctx,
 105                                         &sess_conf, ipsec_ctx->session_pool);
 106                         if (sa->sec_session == NULL) {
 107                                 RTE_LOG(ERR, IPSEC,
 108                                 "SEC Session init failed: err: %d\n", ret);
 109                                 return -1;
 110                         }
 111                 } else if (sa->type == RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO) {
 112                         struct rte_flow_error err;
 113                         struct rte_security_ctx *ctx = (struct rte_security_ctx *)
 114                                                         rte_eth_dev_get_sec_ctx(
 115                                                         sa->portid);
 116                         const struct rte_security_capability *sec_cap;
 117                         int ret = 0;
 118
 119                         sa->sec_session = rte_security_session_create(ctx,
 120                                         &sess_conf, ipsec_ctx->session_pool);
 121                         if (sa->sec_session == NULL) {
 122                                 RTE_LOG(ERR, IPSEC,
 123                                 "SEC Session init failed: err: %d\n", ret);
 124                                 return -1;
 125                         }
 126
 127                         sec_cap = rte_security_capabilities_get(ctx);
 128
 129                         /* iterate until ESP tunnel*/
 130                         while (sec_cap->action !=
 131                                         RTE_SECURITY_ACTION_TYPE_NONE) {
 132
 133                                 if (sec_cap->action == sa->type &&
 134                                     sec_cap->protocol ==
 135                                         RTE_SECURITY_PROTOCOL_IPSEC &&
 136                                     sec_cap->ipsec.mode ==
 137                                         RTE_SECURITY_IPSEC_SA_MODE_TUNNEL &&
 138                                     sec_cap->ipsec.direction == sa->direction)
 139                                         break;
 140                                 sec_cap++;
 141                         }
 142
 143                         if (sec_cap->action == RTE_SECURITY_ACTION_TYPE_NONE) {
 144                                 RTE_LOG(ERR, IPSEC,
 145                                 "No suitable security capability found\n");
 146                                 return -1;
 147                         }
 148
 149                         sa->ol_flags = sec_cap->ol_flags;
 150                         sa->security_ctx = ctx;
 151                         sa->pattern[0].type = RTE_FLOW_ITEM_TYPE_ETH;
 152
 153                         sa->pattern[1].type = RTE_FLOW_ITEM_TYPE_IPV4;
 154                         sa->pattern[1].mask = &rte_flow_item_ipv4_mask;
 155                         if (sa->flags & IP6_TUNNEL) {
 156                                 sa->pattern[1].spec = &sa->ipv6_spec;
 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 {
 162                                 sa->pattern[1].spec = &sa->ipv4_spec;
 163                                 sa->ipv4_spec.hdr.dst_addr = sa->dst.ip.ip4;
 164                                 sa->ipv4_spec.hdr.src_addr = sa->src.ip.ip4;
 165                         }
 166
 167                         sa->pattern[2].type = RTE_FLOW_ITEM_TYPE_ESP;
 168                         sa->pattern[2].spec = &sa->esp_spec;
 169                         sa->pattern[2].mask = &rte_flow_item_esp_mask;
 170                         sa->esp_spec.hdr.spi = rte_cpu_to_be_32(sa->spi);
 171
 172                         sa->pattern[3].type = RTE_FLOW_ITEM_TYPE_END;
 173
 174                         sa->action[0].type = RTE_FLOW_ACTION_TYPE_SECURITY;
 175                         sa->action[0].conf = sa->sec_session;
 176
 177                         sa->action[1].type = RTE_FLOW_ACTION_TYPE_END;
 178
 179                         sa->attr.egress = (sa->direction ==
 180                                         RTE_SECURITY_IPSEC_SA_DIR_EGRESS);
 181                         sa->attr.ingress = (sa->direction ==
 182                                         RTE_SECURITY_IPSEC_SA_DIR_INGRESS);
 183                         if (sa->attr.ingress) {
 184                                 uint8_t rss_key[40];
 185                                 struct rte_eth_rss_conf rss_conf = {
 186                                         .rss_key = rss_key,
 187                                         .rss_key_len = 40,
 188                                 };
 189                                 struct rte_eth_dev *eth_dev;
 190                                 uint16_t queue[RTE_MAX_QUEUES_PER_PORT];
 191                                 struct rte_flow_action_rss action_rss;
 192                                 unsigned int i;
 193                                 unsigned int j;
 194
 195                                 sa->action[2].type = RTE_FLOW_ACTION_TYPE_END;
 196                                 /* Try RSS. */
 197                                 sa->action[1].type = RTE_FLOW_ACTION_TYPE_RSS;
 198                                 sa->action[1].conf = &action_rss;
 199                                 eth_dev = ctx->device;
 200                                 rte_eth_dev_rss_hash_conf_get(sa->portid,
 201                                                               &rss_conf);
 202                                 for (i = 0, j = 0;
 203                                      i < eth_dev->data->nb_rx_queues; ++i)
 204                                         if (eth_dev->data->rx_queues[i])
 205                                                 queue[j++] = i;
 206                                 action_rss = (struct rte_flow_action_rss){
 207                                         .types = rss_conf.rss_hf,
 208                                         .key_len = rss_conf.rss_key_len,
 209                                         .queue_num = j,
 210                                         .key = rss_key,
 211                                         .queue = queue,
 212                                 };
 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                                 /* Try End. */
 228                                 sa->action[1].type = RTE_FLOW_ACTION_TYPE_END;
 229                                 sa->action[1].conf = NULL;
 230                                 ret = rte_flow_validate(sa->portid, &sa->attr,
 231                                                         sa->pattern, sa->action,
 232                                                         &err);
 233                                 if (ret)
 234                                         goto flow_create_failure;
 235                         } else if (sa->attr.egress &&
 236                                    (sa->ol_flags &
 237                                     RTE_SECURITY_TX_HW_TRAILER_OFFLOAD)) {
 238                                 sa->action[1].type =
 239                                         RTE_FLOW_ACTION_TYPE_PASSTHRU;
 240                                 sa->action[2].type =
 241                                         RTE_FLOW_ACTION_TYPE_END;
 242                         }
 243 flow_create:
 244                         sa->flow = rte_flow_create(sa->portid,
 245                                 &sa->attr, sa->pattern, sa->action, &err);
 246                         if (sa->flow == NULL) {
 247 flow_create_failure:
 248                                 RTE_LOG(ERR, IPSEC,
 249                                         "Failed to create ipsec flow msg: %s\n",
 250                                         err.message);
 251                                 return -1;
 252                         }
 253                 } else if (sa->type ==
 254                                 RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL) {
 255                         struct rte_security_ctx *ctx =
 256                                         (struct rte_security_ctx *)
 257                                         rte_eth_dev_get_sec_ctx(sa->portid);
 258                         const struct rte_security_capability *sec_cap;
 259
 260                         if (ctx == NULL) {
 261                                 RTE_LOG(ERR, IPSEC,
 262                                 "Ethernet device doesn't have security features registered\n");
 263                                 return -1;
 264                         }
 265
 266                         /* Set IPsec parameters in conf */
 267                         set_ipsec_conf(sa, &(sess_conf.ipsec));
 268
 269                         /* Save SA as userdata for the security session. When
 270                          * the packet is received, this userdata will be
 271                          * retrieved using the metadata from the packet.
 272                          *
 273                          * The PMD is expected to set similar metadata for other
 274                          * operations, like rte_eth_event, which are tied to
 275                          * security session. In such cases, the userdata could
 276                          * be obtained to uniquely identify the security
 277                          * parameters denoted.
 278                          */
 279
 280                         sess_conf.userdata = (void *) sa;
 281
 282                         sa->sec_session = rte_security_session_create(ctx,
 283                                         &sess_conf, ipsec_ctx->session_pool);
 284                         if (sa->sec_session == NULL) {
 285                                 RTE_LOG(ERR, IPSEC,
 286                                 "SEC Session init failed: err: %d\n", ret);
 287                                 return -1;
 288                         }
 289
 290                         sec_cap = rte_security_capabilities_get(ctx);
 291
 292                         if (sec_cap == NULL) {
 293                                 RTE_LOG(ERR, IPSEC,
 294                                 "No capabilities registered\n");
 295                                 return -1;
 296                         }
 297
 298                         /* iterate until ESP tunnel*/
 299                         while (sec_cap->action !=
 300                                         RTE_SECURITY_ACTION_TYPE_NONE) {
 301
 302                                 if (sec_cap->action == sa->type &&
 303                                     sec_cap->protocol ==
 304                                         RTE_SECURITY_PROTOCOL_IPSEC &&
 305                                     sec_cap->ipsec.mode ==
 306                                         RTE_SECURITY_IPSEC_SA_MODE_TUNNEL &&
 307                                     sec_cap->ipsec.direction == sa->direction)
 308                                         break;
 309                                 sec_cap++;
 310                         }
 311
 312                         if (sec_cap->action == RTE_SECURITY_ACTION_TYPE_NONE) {
 313                                 RTE_LOG(ERR, IPSEC,
 314                                 "No suitable security capability found\n");
 315                                 return -1;
 316                         }
 317
 318                         sa->ol_flags = sec_cap->ol_flags;
 319                         sa->security_ctx = ctx;
 320                 }
 321         } else {
 322                 sa->crypto_session = rte_cryptodev_sym_session_create(
 323                                 ipsec_ctx->session_pool);
 324                 rte_cryptodev_sym_session_init(ipsec_ctx->tbl[cdev_id_qp].id,
 325                                 sa->crypto_session, sa->xforms,
 326                                 ipsec_ctx->session_pool);
 327
 328                 rte_cryptodev_info_get(ipsec_ctx->tbl[cdev_id_qp].id,
 329                                 &cdev_info);
 330         }
 331         sa->cdev_id_qp = cdev_id_qp;
 332
 333         return 0;
 334 }
 335
 336 static inline void
 337 enqueue_cop(struct cdev_qp *cqp, struct rte_crypto_op *cop)
 338 {
 339         int32_t ret = 0, i;
 340
 341         cqp->buf[cqp->len++] = cop;
 342
 343         if (cqp->len == MAX_PKT_BURST) {
 344                 int enq_size = cqp->len;
 345                 if ((cqp->in_flight + enq_size) > MAX_INFLIGHT)
 346                         enq_size -=
 347                             (int)((cqp->in_flight + enq_size) - MAX_INFLIGHT);
 348
 349                 if (enq_size > 0)
 350                         ret = rte_cryptodev_enqueue_burst(cqp->id, cqp->qp,
 351                                         cqp->buf, enq_size);
 352                 if (ret < cqp->len) {
 353                         RTE_LOG_DP(DEBUG, IPSEC, "Cryptodev %u queue %u:"
 354                                         " enqueued %u crypto ops out of %u\n",
 355                                          cqp->id, cqp->qp,
 356                                          ret, cqp->len);
 357                         for (i = ret; i < cqp->len; i++)
 358                                 rte_pktmbuf_free(cqp->buf[i]->sym->m_src);
 359                 }
 360                 cqp->in_flight += ret;
 361                 cqp->len = 0;
 362         }
 363 }
 364
 365 static inline void
 366 ipsec_enqueue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx,
 367                 struct rte_mbuf *pkts[], struct ipsec_sa *sas[],
 368                 uint16_t nb_pkts)
 369 {
 370         int32_t ret = 0, i;
 371         struct ipsec_mbuf_metadata *priv;
 372         struct rte_crypto_sym_op *sym_cop;
 373         struct ipsec_sa *sa;
 374
 375         for (i = 0; i < nb_pkts; i++) {
 376                 if (unlikely(sas[i] == NULL)) {
 377                         rte_pktmbuf_free(pkts[i]);
 378                         continue;
 379                 }
 380
 381                 rte_prefetch0(sas[i]);
 382                 rte_prefetch0(pkts[i]);
 383
 384                 priv = get_priv(pkts[i]);
 385                 sa = sas[i];
 386                 priv->sa = sa;
 387
 388                 switch (sa->type) {
 389                 case RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL:
 390                         priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC;
 391                         priv->cop.status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 392
 393                         rte_prefetch0(&priv->sym_cop);
 394
 395                         if ((unlikely(sa->sec_session == NULL)) &&
 396                                         create_session(ipsec_ctx, sa)) {
 397                                 rte_pktmbuf_free(pkts[i]);
 398                                 continue;
 399                         }
 400
 401                         sym_cop = get_sym_cop(&priv->cop);
 402                         sym_cop->m_src = pkts[i];
 403
 404                         rte_security_attach_session(&priv->cop,
 405                                         sa->sec_session);
 406                         break;
 407                 case RTE_SECURITY_ACTION_TYPE_NONE:
 408
 409                         priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC;
 410                         priv->cop.status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 411
 412                         rte_prefetch0(&priv->sym_cop);
 413
 414                         if ((unlikely(sa->crypto_session == NULL)) &&
 415                                         create_session(ipsec_ctx, sa)) {
 416                                 rte_pktmbuf_free(pkts[i]);
 417                                 continue;
 418                         }
 419
 420                         rte_crypto_op_attach_sym_session(&priv->cop,
 421                                         sa->crypto_session);
 422
 423                         ret = xform_func(pkts[i], sa, &priv->cop);
 424                         if (unlikely(ret)) {
 425                                 rte_pktmbuf_free(pkts[i]);
 426                                 continue;
 427                         }
 428                         break;
 429                 case RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL:
 430                         if ((unlikely(sa->sec_session == NULL)) &&
 431                                         create_session(ipsec_ctx, sa)) {
 432                                 rte_pktmbuf_free(pkts[i]);
 433                                 continue;
 434                         }
 435
 436                         ipsec_ctx->ol_pkts[ipsec_ctx->ol_pkts_cnt++] = pkts[i];
 437                         if (sa->ol_flags & RTE_SECURITY_TX_OLOAD_NEED_MDATA)
 438                                 rte_security_set_pkt_metadata(
 439                                                 sa->security_ctx,
 440                                                 sa->sec_session, pkts[i], NULL);
 441                         continue;
 442                 case RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO:
 443                         priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC;
 444                         priv->cop.status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 445
 446                         rte_prefetch0(&priv->sym_cop);
 447
 448                         if ((unlikely(sa->sec_session == NULL)) &&
 449                                         create_session(ipsec_ctx, sa)) {
 450                                 rte_pktmbuf_free(pkts[i]);
 451                                 continue;
 452                         }
 453
 454                         rte_security_attach_session(&priv->cop,
 455                                         sa->sec_session);
 456
 457                         ret = xform_func(pkts[i], sa, &priv->cop);
 458                         if (unlikely(ret)) {
 459                                 rte_pktmbuf_free(pkts[i]);
 460                                 continue;
 461                         }
 462
 463                         ipsec_ctx->ol_pkts[ipsec_ctx->ol_pkts_cnt++] = pkts[i];
 464                         if (sa->ol_flags & RTE_SECURITY_TX_OLOAD_NEED_MDATA)
 465                                 rte_security_set_pkt_metadata(
 466                                                 sa->security_ctx,
 467                                                 sa->sec_session, pkts[i], NULL);
 468                         continue;
 469                 }
 470
 471                 RTE_ASSERT(sa->cdev_id_qp < ipsec_ctx->nb_qps);
 472                 enqueue_cop(&ipsec_ctx->tbl[sa->cdev_id_qp], &priv->cop);
 473         }
 474 }
 475
 476 static inline int
 477 ipsec_dequeue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx,
 478               struct rte_mbuf *pkts[], uint16_t max_pkts)
 479 {
 480         int32_t nb_pkts = 0, ret = 0, i, j, nb_cops;
 481         struct ipsec_mbuf_metadata *priv;
 482         struct rte_crypto_op *cops[max_pkts];
 483         struct ipsec_sa *sa;
 484         struct rte_mbuf *pkt;
 485
 486         for (i = 0; i < ipsec_ctx->nb_qps && nb_pkts < max_pkts; i++) {
 487                 struct cdev_qp *cqp;
 488
 489                 cqp = &ipsec_ctx->tbl[ipsec_ctx->last_qp++];
 490                 if (ipsec_ctx->last_qp == ipsec_ctx->nb_qps)
 491                         ipsec_ctx->last_qp %= ipsec_ctx->nb_qps;
 492
 493                 while (ipsec_ctx->ol_pkts_cnt > 0 && nb_pkts < max_pkts) {
 494                         pkt = ipsec_ctx->ol_pkts[--ipsec_ctx->ol_pkts_cnt];
 495                         rte_prefetch0(pkt);
 496                         priv = get_priv(pkt);
 497                         sa = priv->sa;
 498                         ret = xform_func(pkt, sa, &priv->cop);
 499                         if (unlikely(ret)) {
 500                                 rte_pktmbuf_free(pkt);
 501                                 continue;
 502                         }
 503                         pkts[nb_pkts++] = pkt;
 504                 }
 505
 506                 if (cqp->in_flight == 0)
 507                         continue;
 508
 509                 nb_cops = rte_cryptodev_dequeue_burst(cqp->id, cqp->qp,
 510                                 cops, max_pkts - nb_pkts);
 511
 512                 cqp->in_flight -= nb_cops;
 513
 514                 for (j = 0; j < nb_cops; j++) {
 515                         pkt = cops[j]->sym->m_src;
 516                         rte_prefetch0(pkt);
 517
 518                         priv = get_priv(pkt);
 519                         sa = priv->sa;
 520
 521                         RTE_ASSERT(sa != NULL);
 522
 523                         if (sa->type == RTE_SECURITY_ACTION_TYPE_NONE) {
 524                                 ret = xform_func(pkt, sa, cops[j]);
 525                                 if (unlikely(ret)) {
 526                                         rte_pktmbuf_free(pkt);
 527                                         continue;
 528                                 }
 529                         }
 530                         pkts[nb_pkts++] = pkt;
 531                 }
 532         }
 533
 534         /* return packets */
 535         return nb_pkts;
 536 }
 537
 538 uint16_t
 539 ipsec_inbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
 540                 uint16_t nb_pkts, uint16_t len)
 541 {
 542         struct ipsec_sa *sas[nb_pkts];
 543
 544         inbound_sa_lookup(ctx->sa_ctx, pkts, sas, nb_pkts);
 545
 546         ipsec_enqueue(esp_inbound, ctx, pkts, sas, nb_pkts);
 547
 548         return ipsec_dequeue(esp_inbound_post, ctx, pkts, len);
 549 }
 550
 551 uint16_t
 552 ipsec_outbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
 553                 uint32_t sa_idx[], uint16_t nb_pkts, uint16_t len)
 554 {
 555         struct ipsec_sa *sas[nb_pkts];
 556
 557         outbound_sa_lookup(ctx->sa_ctx, sa_idx, sas, nb_pkts);
 558
 559         ipsec_enqueue(esp_outbound, ctx, pkts, sas, nb_pkts);
 560
 561         return ipsec_dequeue(esp_outbound_post, ctx, pkts, len);
 562 }