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