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_info dev_info;
 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                                 rte_eth_dev_info_get(sa->portid, &dev_info);
 199                                 sa->action[2].type = RTE_FLOW_ACTION_TYPE_END;
 200                                 /* Try RSS. */
 201                                 sa->action[1].type = RTE_FLOW_ACTION_TYPE_RSS;
 202                                 sa->action[1].conf = &action_rss;
 203                                 rte_eth_dev_rss_hash_conf_get(sa->portid,
 204                                                               &rss_conf);
 205                                 for (i = 0, j = 0;
 206                                      i < dev_info.nb_rx_queues; ++i)
 207                                         queue[j++] = i;
 208                                 action_rss = (struct rte_flow_action_rss){
 209                                         .types = rss_conf.rss_hf,
 210                                         .key_len = rss_conf.rss_key_len,
 211                                         .queue_num = j,
 212                                         .key = rss_key,
 213                                         .queue = queue,
 214                                 };
 215                                 ret = rte_flow_validate(sa->portid, &sa->attr,
 216                                                         sa->pattern, sa->action,
 217                                                         &err);
 218                                 if (!ret)
 219                                         goto flow_create;
 220                                 /* Try Queue. */
 221                                 sa->action[1].type = RTE_FLOW_ACTION_TYPE_QUEUE;
 222                                 sa->action[1].conf =
 223                                         &(struct rte_flow_action_queue){
 224                                         .index = 0,
 225                                 };
 226                                 ret = rte_flow_validate(sa->portid, &sa->attr,
 227                                                         sa->pattern, sa->action,
 228                                                         &err);
 229                                 /* Try End. */
 230                                 sa->action[1].type = RTE_FLOW_ACTION_TYPE_END;
 231                                 sa->action[1].conf = NULL;
 232                                 ret = rte_flow_validate(sa->portid, &sa->attr,
 233                                                         sa->pattern, sa->action,
 234                                                         &err);
 235                                 if (ret)
 236                                         goto flow_create_failure;
 237                         } else if (sa->attr.egress &&
 238                                    (sa->ol_flags &
 239                                     RTE_SECURITY_TX_HW_TRAILER_OFFLOAD)) {
 240                                 sa->action[1].type =
 241                                         RTE_FLOW_ACTION_TYPE_PASSTHRU;
 242                                 sa->action[2].type =
 243                                         RTE_FLOW_ACTION_TYPE_END;
 244                         }
 245 flow_create:
 246                         sa->flow = rte_flow_create(sa->portid,
 247                                 &sa->attr, sa->pattern, sa->action, &err);
 248                         if (sa->flow == NULL) {
 249 flow_create_failure:
 250                                 RTE_LOG(ERR, IPSEC,
 251                                         "Failed to create ipsec flow msg: %s\n",
 252                                         err.message);
 253                                 return -1;
 254                         }
 255                 } else if (sa->type ==
 256                                 RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL) {
 257                         struct rte_security_ctx *ctx =
 258                                         (struct rte_security_ctx *)
 259                                         rte_eth_dev_get_sec_ctx(sa->portid);
 260                         const struct rte_security_capability *sec_cap;
 261
 262                         if (ctx == NULL) {
 263                                 RTE_LOG(ERR, IPSEC,
 264                                 "Ethernet device doesn't have security features registered\n");
 265                                 return -1;
 266                         }
 267
 268                         /* Set IPsec parameters in conf */
 269                         set_ipsec_conf(sa, &(sess_conf.ipsec));
 270
 271                         /* Save SA as userdata for the security session. When
 272                          * the packet is received, this userdata will be
 273                          * retrieved using the metadata from the packet.
 274                          *
 275                          * The PMD is expected to set similar metadata for other
 276                          * operations, like rte_eth_event, which are tied to
 277                          * security session. In such cases, the userdata could
 278                          * be obtained to uniquely identify the security
 279                          * parameters denoted.
 280                          */
 281
 282                         sess_conf.userdata = (void *) sa;
 283
 284                         sa->sec_session = rte_security_session_create(ctx,
 285                                         &sess_conf, ipsec_ctx->session_pool);
 286                         if (sa->sec_session == NULL) {
 287                                 RTE_LOG(ERR, IPSEC,
 288                                 "SEC Session init failed: err: %d\n", ret);
 289                                 return -1;
 290                         }
 291
 292                         sec_cap = rte_security_capabilities_get(ctx);
 293
 294                         if (sec_cap == NULL) {
 295                                 RTE_LOG(ERR, IPSEC,
 296                                 "No capabilities registered\n");
 297                                 return -1;
 298                         }
 299
 300                         /* iterate until ESP tunnel*/
 301                         while (sec_cap->action !=
 302                                         RTE_SECURITY_ACTION_TYPE_NONE) {
 303
 304                                 if (sec_cap->action == sa->type &&
 305                                     sec_cap->protocol ==
 306                                         RTE_SECURITY_PROTOCOL_IPSEC &&
 307                                     sec_cap->ipsec.mode ==
 308                                         sess_conf.ipsec.mode &&
 309                                     sec_cap->ipsec.direction == sa->direction)
 310                                         break;
 311                                 sec_cap++;
 312                         }
 313
 314                         if (sec_cap->action == RTE_SECURITY_ACTION_TYPE_NONE) {
 315                                 RTE_LOG(ERR, IPSEC,
 316                                 "No suitable security capability found\n");
 317                                 return -1;
 318                         }
 319
 320                         sa->ol_flags = sec_cap->ol_flags;
 321                         sa->security_ctx = ctx;
 322                 }
 323         } else {
 324                 sa->crypto_session = rte_cryptodev_sym_session_create(
 325                                 ipsec_ctx->session_pool);
 326                 rte_cryptodev_sym_session_init(ipsec_ctx->tbl[cdev_id_qp].id,
 327                                 sa->crypto_session, sa->xforms,
 328                                 ipsec_ctx->session_priv_pool);
 329
 330                 rte_cryptodev_info_get(ipsec_ctx->tbl[cdev_id_qp].id,
 331                                 &cdev_info);
 332         }
 333         sa->cdev_id_qp = cdev_id_qp;
 334
 335         return 0;
 336 }
 337
 338 /*
 339  * queue crypto-ops into PMD queue.
 340  */
 341 void
 342 enqueue_cop_burst(struct cdev_qp *cqp)
 343 {
 344         uint32_t i, len, ret;
 345
 346         len = cqp->len;
 347         ret = rte_cryptodev_enqueue_burst(cqp->id, cqp->qp, cqp->buf, len);
 348         if (ret < len) {
 349                 RTE_LOG_DP(DEBUG, IPSEC, "Cryptodev %u queue %u:"
 350                         " enqueued %u crypto ops out of %u\n",
 351                         cqp->id, cqp->qp, ret, len);
 352                         /* drop packets that we fail to enqueue */
 353                         for (i = ret; i < len; i++)
 354                                 rte_pktmbuf_free(cqp->buf[i]->sym->m_src);
 355         }
 356         cqp->in_flight += ret;
 357         cqp->len = 0;
 358 }
 359
 360 static inline void
 361 enqueue_cop(struct cdev_qp *cqp, struct rte_crypto_op *cop)
 362 {
 363         cqp->buf[cqp->len++] = cop;
 364
 365         if (cqp->len == MAX_PKT_BURST)
 366                 enqueue_cop_burst(cqp);
 367 }
 368
 369 static inline void
 370 ipsec_enqueue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx,
 371                 struct rte_mbuf *pkts[], struct ipsec_sa *sas[],
 372                 uint16_t nb_pkts)
 373 {
 374         int32_t ret = 0, i;
 375         struct ipsec_mbuf_metadata *priv;
 376         struct rte_crypto_sym_op *sym_cop;
 377         struct ipsec_sa *sa;
 378
 379         for (i = 0; i < nb_pkts; i++) {
 380                 if (unlikely(sas[i] == NULL)) {
 381                         rte_pktmbuf_free(pkts[i]);
 382                         continue;
 383                 }
 384
 385                 rte_prefetch0(sas[i]);
 386                 rte_prefetch0(pkts[i]);
 387
 388                 priv = get_priv(pkts[i]);
 389                 sa = sas[i];
 390                 priv->sa = sa;
 391
 392                 switch (sa->type) {
 393                 case RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL:
 394                         priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC;
 395                         priv->cop.status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 396
 397                         rte_prefetch0(&priv->sym_cop);
 398
 399                         if ((unlikely(sa->sec_session == NULL)) &&
 400                                         create_session(ipsec_ctx, sa)) {
 401                                 rte_pktmbuf_free(pkts[i]);
 402                                 continue;
 403                         }
 404
 405                         sym_cop = get_sym_cop(&priv->cop);
 406                         sym_cop->m_src = pkts[i];
 407
 408                         rte_security_attach_session(&priv->cop,
 409                                         sa->sec_session);
 410                         break;
 411                 case RTE_SECURITY_ACTION_TYPE_NONE:
 412
 413                         priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC;
 414                         priv->cop.status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 415
 416                         rte_prefetch0(&priv->sym_cop);
 417
 418                         if ((unlikely(sa->crypto_session == NULL)) &&
 419                                         create_session(ipsec_ctx, sa)) {
 420                                 rte_pktmbuf_free(pkts[i]);
 421                                 continue;
 422                         }
 423
 424                         rte_crypto_op_attach_sym_session(&priv->cop,
 425                                         sa->crypto_session);
 426
 427                         ret = xform_func(pkts[i], sa, &priv->cop);
 428                         if (unlikely(ret)) {
 429                                 rte_pktmbuf_free(pkts[i]);
 430                                 continue;
 431                         }
 432                         break;
 433                 case RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL:
 434                         if ((unlikely(sa->sec_session == NULL)) &&
 435                                         create_session(ipsec_ctx, sa)) {
 436                                 rte_pktmbuf_free(pkts[i]);
 437                                 continue;
 438                         }
 439
 440                         ipsec_ctx->ol_pkts[ipsec_ctx->ol_pkts_cnt++] = pkts[i];
 441                         if (sa->ol_flags & RTE_SECURITY_TX_OLOAD_NEED_MDATA)
 442                                 rte_security_set_pkt_metadata(
 443                                                 sa->security_ctx,
 444                                                 sa->sec_session, pkts[i], NULL);
 445                         continue;
 446                 case RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO:
 447                         priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC;
 448                         priv->cop.status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
 449
 450                         rte_prefetch0(&priv->sym_cop);
 451
 452                         if ((unlikely(sa->sec_session == NULL)) &&
 453                                         create_session(ipsec_ctx, sa)) {
 454                                 rte_pktmbuf_free(pkts[i]);
 455                                 continue;
 456                         }
 457
 458                         rte_security_attach_session(&priv->cop,
 459                                         sa->sec_session);
 460
 461                         ret = xform_func(pkts[i], sa, &priv->cop);
 462                         if (unlikely(ret)) {
 463                                 rte_pktmbuf_free(pkts[i]);
 464                                 continue;
 465                         }
 466
 467                         ipsec_ctx->ol_pkts[ipsec_ctx->ol_pkts_cnt++] = pkts[i];
 468                         if (sa->ol_flags & RTE_SECURITY_TX_OLOAD_NEED_MDATA)
 469                                 rte_security_set_pkt_metadata(
 470                                                 sa->security_ctx,
 471                                                 sa->sec_session, pkts[i], NULL);
 472                         continue;
 473                 }
 474
 475                 RTE_ASSERT(sa->cdev_id_qp < ipsec_ctx->nb_qps);
 476                 enqueue_cop(&ipsec_ctx->tbl[sa->cdev_id_qp], &priv->cop);
 477         }
 478 }
 479
 480 static inline int32_t
 481 ipsec_inline_dequeue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx,
 482               struct rte_mbuf *pkts[], uint16_t max_pkts)
 483 {
 484         int32_t nb_pkts, ret;
 485         struct ipsec_mbuf_metadata *priv;
 486         struct ipsec_sa *sa;
 487         struct rte_mbuf *pkt;
 488
 489         nb_pkts = 0;
 490         while (ipsec_ctx->ol_pkts_cnt > 0 && nb_pkts < max_pkts) {
 491                 pkt = ipsec_ctx->ol_pkts[--ipsec_ctx->ol_pkts_cnt];
 492                 rte_prefetch0(pkt);
 493                 priv = get_priv(pkt);
 494                 sa = priv->sa;
 495                 ret = xform_func(pkt, sa, &priv->cop);
 496                 if (unlikely(ret)) {
 497                         rte_pktmbuf_free(pkt);
 498                         continue;
 499                 }
 500                 pkts[nb_pkts++] = pkt;
 501         }
 502
 503         return nb_pkts;
 504 }
 505
 506 static inline int
 507 ipsec_dequeue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx,
 508               struct rte_mbuf *pkts[], uint16_t max_pkts)
 509 {
 510         int32_t nb_pkts = 0, ret = 0, i, j, nb_cops;
 511         struct ipsec_mbuf_metadata *priv;
 512         struct rte_crypto_op *cops[max_pkts];
 513         struct ipsec_sa *sa;
 514         struct rte_mbuf *pkt;
 515
 516         for (i = 0; i < ipsec_ctx->nb_qps && nb_pkts < max_pkts; i++) {
 517                 struct cdev_qp *cqp;
 518
 519                 cqp = &ipsec_ctx->tbl[ipsec_ctx->last_qp++];
 520                 if (ipsec_ctx->last_qp == ipsec_ctx->nb_qps)
 521                         ipsec_ctx->last_qp %= ipsec_ctx->nb_qps;
 522
 523                 if (cqp->in_flight == 0)
 524                         continue;
 525
 526                 nb_cops = rte_cryptodev_dequeue_burst(cqp->id, cqp->qp,
 527                                 cops, max_pkts - nb_pkts);
 528
 529                 cqp->in_flight -= nb_cops;
 530
 531                 for (j = 0; j < nb_cops; j++) {
 532                         pkt = cops[j]->sym->m_src;
 533                         rte_prefetch0(pkt);
 534
 535                         priv = get_priv(pkt);
 536                         sa = priv->sa;
 537
 538                         RTE_ASSERT(sa != NULL);
 539
 540                         if (sa->type == RTE_SECURITY_ACTION_TYPE_NONE) {
 541                                 ret = xform_func(pkt, sa, cops[j]);
 542                                 if (unlikely(ret)) {
 543                                         rte_pktmbuf_free(pkt);
 544                                         continue;
 545                                 }
 546                         }
 547                         pkts[nb_pkts++] = pkt;
 548                 }
 549         }
 550
 551         /* return packets */
 552         return nb_pkts;
 553 }
 554
 555 uint16_t
 556 ipsec_inbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
 557                 uint16_t nb_pkts, uint16_t len)
 558 {
 559         struct ipsec_sa *sas[nb_pkts];
 560
 561         inbound_sa_lookup(ctx->sa_ctx, pkts, sas, nb_pkts);
 562
 563         ipsec_enqueue(esp_inbound, ctx, pkts, sas, nb_pkts);
 564
 565         return ipsec_inline_dequeue(esp_inbound_post, ctx, pkts, len);
 566 }
 567
 568 uint16_t
 569 ipsec_inbound_cqp_dequeue(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
 570                 uint16_t len)
 571 {
 572         return ipsec_dequeue(esp_inbound_post, ctx, pkts, len);
 573 }
 574
 575 uint16_t
 576 ipsec_outbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
 577                 uint32_t sa_idx[], uint16_t nb_pkts, uint16_t len)
 578 {
 579         struct ipsec_sa *sas[nb_pkts];
 580
 581         outbound_sa_lookup(ctx->sa_ctx, sa_idx, sas, nb_pkts);
 582
 583         ipsec_enqueue(esp_outbound, ctx, pkts, sas, nb_pkts);
 584
 585         return ipsec_inline_dequeue(esp_outbound_post, ctx, pkts, len);
 586 }
 587
 588 uint16_t
 589 ipsec_outbound_cqp_dequeue(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[],
 590                 uint16_t len)
 591 {
 592         return ipsec_dequeue(esp_outbound_post, ctx, pkts, len);
 593 }