src/vnet/ipsec/ipsec.c

   1 /*
   2  * ipsec.c : IPSEC module functions
   3  *
   4  * Copyright (c) 2015 Cisco and/or its affiliates.
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at:
   8  *
   9  *     http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  */
  17
  18 #include <vnet/vnet.h>
  19 #include <vnet/api_errno.h>
  20 #include <vnet/ip/ip.h>
  21 #include <vnet/interface.h>
  22 #include <vnet/udp/udp.h>
  23
  24 #include <vnet/ipsec/ipsec.h>
  25 #include <vnet/ipsec/esp.h>
  26 #include <vnet/ipsec/ah.h>
  27
  28 ipsec_main_t ipsec_main;
  29 esp_async_post_next_t esp_encrypt_async_next;
  30 esp_async_post_next_t esp_decrypt_async_next;
  31
  32 static clib_error_t *
  33 ipsec_check_ah_support (ipsec_sa_t * sa)
  34 {
  35   ipsec_main_t *im = &ipsec_main;
  36
  37   if (sa->integ_alg == IPSEC_INTEG_ALG_NONE)
  38     return clib_error_return (0, "unsupported none integ-alg");
  39
  40   if (!vnet_crypto_is_set_handler (im->integ_algs[sa->integ_alg].alg))
  41     return clib_error_return (0, "No crypto engine support for %U",
  42                               format_ipsec_integ_alg, sa->integ_alg);
  43
  44   return 0;
  45 }
  46
  47 static clib_error_t *
  48 ipsec_check_esp_support (ipsec_sa_t * sa)
  49 {
  50   ipsec_main_t *im = &ipsec_main;
  51
  52   if (IPSEC_INTEG_ALG_NONE != sa->integ_alg)
  53     {
  54       if (!vnet_crypto_is_set_handler (im->integ_algs[sa->integ_alg].alg))
  55         return clib_error_return (0, "No crypto engine support for %U",
  56                                   format_ipsec_integ_alg, sa->integ_alg);
  57     }
  58   if (IPSEC_CRYPTO_ALG_NONE != sa->crypto_alg)
  59     {
  60       if (!vnet_crypto_is_set_handler (im->crypto_algs[sa->crypto_alg].alg))
  61         return clib_error_return (0, "No crypto engine support for %U",
  62                                   format_ipsec_crypto_alg, sa->crypto_alg);
  63     }
  64
  65   return (0);
  66 }
  67
  68 clib_error_t *
  69 ipsec_add_del_sa_sess_cb (ipsec_main_t * im, u32 sa_index, u8 is_add)
  70 {
  71   ipsec_ah_backend_t *ah =
  72     pool_elt_at_index (im->ah_backends, im->ah_current_backend);
  73   if (ah->add_del_sa_sess_cb)
  74     {
  75       clib_error_t *err = ah->add_del_sa_sess_cb (sa_index, is_add);
  76       if (err)
  77         return err;
  78     }
  79   ipsec_esp_backend_t *esp =
  80     pool_elt_at_index (im->esp_backends, im->esp_current_backend);
  81   if (esp->add_del_sa_sess_cb)
  82     {
  83       clib_error_t *err = esp->add_del_sa_sess_cb (sa_index, is_add);
  84       if (err)
  85         return err;
  86     }
  87   return 0;
  88 }
  89
  90 clib_error_t *
  91 ipsec_check_support_cb (ipsec_main_t * im, ipsec_sa_t * sa)
  92 {
  93   clib_error_t *error = 0;
  94
  95   if (PREDICT_FALSE (sa->protocol == IPSEC_PROTOCOL_AH))
  96     {
  97       ipsec_ah_backend_t *ah =
  98         pool_elt_at_index (im->ah_backends, im->ah_current_backend);
  99       ASSERT (ah->check_support_cb);
 100       error = ah->check_support_cb (sa);
 101     }
 102   else
 103     {
 104       ipsec_esp_backend_t *esp =
 105         pool_elt_at_index (im->esp_backends, im->esp_current_backend);
 106       ASSERT (esp->check_support_cb);
 107       error = esp->check_support_cb (sa);
 108     }
 109   return error;
 110 }
 111
 112
 113 static void
 114 ipsec_add_node (vlib_main_t * vm, const char *node_name,
 115                 const char *prev_node_name, u32 * out_node_index,
 116                 u32 * out_next_index)
 117 {
 118   vlib_node_t *prev_node, *node;
 119   prev_node = vlib_get_node_by_name (vm, (u8 *) prev_node_name);
 120   ASSERT (prev_node);
 121   node = vlib_get_node_by_name (vm, (u8 *) node_name);
 122   ASSERT (node);
 123   *out_node_index = node->index;
 124   *out_next_index = vlib_node_add_next (vm, prev_node->index, node->index);
 125 }
 126
 127 void
 128 ipsec_add_feature (const char *arc_name,
 129                    const char *node_name, u32 * out_feature_index)
 130 {
 131   u8 arc;
 132
 133   arc = vnet_get_feature_arc_index (arc_name);
 134   ASSERT (arc != (u8) ~ 0);
 135   *out_feature_index = vnet_get_feature_index (arc, node_name);
 136 }
 137
 138 u32
 139 ipsec_register_ah_backend (vlib_main_t * vm, ipsec_main_t * im,
 140                            const char *name,
 141                            const char *ah4_encrypt_node_name,
 142                            const char *ah4_decrypt_node_name,
 143                            const char *ah6_encrypt_node_name,
 144                            const char *ah6_decrypt_node_name,
 145                            check_support_cb_t ah_check_support_cb,
 146                            add_del_sa_sess_cb_t ah_add_del_sa_sess_cb)
 147 {
 148   ipsec_ah_backend_t *b;
 149   pool_get (im->ah_backends, b);
 150   b->name = format (0, "%s%c", name, 0);
 151
 152   ipsec_add_node (vm, ah4_encrypt_node_name, "ipsec4-output-feature",
 153                   &b->ah4_encrypt_node_index, &b->ah4_encrypt_next_index);
 154   ipsec_add_node (vm, ah4_decrypt_node_name, "ipsec4-input-feature",
 155                   &b->ah4_decrypt_node_index, &b->ah4_decrypt_next_index);
 156   ipsec_add_node (vm, ah6_encrypt_node_name, "ipsec6-output-feature",
 157                   &b->ah6_encrypt_node_index, &b->ah6_encrypt_next_index);
 158   ipsec_add_node (vm, ah6_decrypt_node_name, "ipsec6-input-feature",
 159                   &b->ah6_decrypt_node_index, &b->ah6_decrypt_next_index);
 160
 161   b->check_support_cb = ah_check_support_cb;
 162   b->add_del_sa_sess_cb = ah_add_del_sa_sess_cb;
 163   return b - im->ah_backends;
 164 }
 165
 166 u32
 167 ipsec_register_esp_backend (vlib_main_t * vm, ipsec_main_t * im,
 168                             const char *name,
 169                             const char *esp4_encrypt_node_name,
 170                             const char *esp4_encrypt_node_tun_name,
 171                             const char *esp4_decrypt_node_name,
 172                             const char *esp4_decrypt_tun_node_name,
 173                             const char *esp6_encrypt_node_name,
 174                             const char *esp6_encrypt_node_tun_name,
 175                             const char *esp6_decrypt_node_name,
 176                             const char *esp6_decrypt_tun_node_name,
 177                             check_support_cb_t esp_check_support_cb,
 178                             add_del_sa_sess_cb_t esp_add_del_sa_sess_cb,
 179                             enable_disable_cb_t enable_disable_cb)
 180 {
 181   ipsec_esp_backend_t *b;
 182
 183   pool_get (im->esp_backends, b);
 184   b->name = format (0, "%s%c", name, 0);
 185
 186   ipsec_add_node (vm, esp4_encrypt_node_name, "ipsec4-output-feature",
 187                   &b->esp4_encrypt_node_index, &b->esp4_encrypt_next_index);
 188   ipsec_add_node (vm, esp4_decrypt_node_name, "ipsec4-input-feature",
 189                   &b->esp4_decrypt_node_index, &b->esp4_decrypt_next_index);
 190   ipsec_add_node (vm, esp6_encrypt_node_name, "ipsec6-output-feature",
 191                   &b->esp6_encrypt_node_index, &b->esp6_encrypt_next_index);
 192   ipsec_add_node (vm, esp6_decrypt_node_name, "ipsec6-input-feature",
 193                   &b->esp6_decrypt_node_index, &b->esp6_decrypt_next_index);
 194   ipsec_add_node (vm, esp4_decrypt_tun_node_name, "ipsec4-tun-input",
 195                   &b->esp4_decrypt_tun_node_index,
 196                   &b->esp4_decrypt_tun_next_index);
 197   ipsec_add_node (vm, esp6_decrypt_tun_node_name, "ipsec6-tun-input",
 198                   &b->esp6_decrypt_tun_node_index,
 199                   &b->esp6_decrypt_tun_next_index);
 200
 201   ipsec_add_feature ("ip4-output", esp4_encrypt_node_tun_name,
 202                      &b->esp44_encrypt_tun_feature_index);
 203   ipsec_add_feature ("ip4-output", esp6_encrypt_node_tun_name,
 204                      &b->esp46_encrypt_tun_feature_index);
 205   ipsec_add_feature ("ip6-output", esp6_encrypt_node_tun_name,
 206                      &b->esp66_encrypt_tun_feature_index);
 207   ipsec_add_feature ("ip6-output", esp4_encrypt_node_tun_name,
 208                      &b->esp64_encrypt_tun_feature_index);
 209
 210   b->check_support_cb = esp_check_support_cb;
 211   b->add_del_sa_sess_cb = esp_add_del_sa_sess_cb;
 212   b->enable_disable_cb = enable_disable_cb;
 213
 214   return b - im->esp_backends;
 215 }
 216
 217 clib_error_t *
 218 ipsec_rsc_in_use (ipsec_main_t * im)
 219 {
 220   /* return an error is crypto resource are in use */
 221   if (pool_elts (im->sad) > 0)
 222     return clib_error_return (0,
 223                               "%d SA entries configured",
 224                               pool_elts (im->sad));
 225
 226   return (NULL);
 227 }
 228
 229 int
 230 ipsec_select_ah_backend (ipsec_main_t * im, u32 backend_idx)
 231 {
 232   if (ipsec_rsc_in_use (im))
 233     return VNET_API_ERROR_RSRC_IN_USE;
 234
 235   if (pool_is_free_index (im->ah_backends, backend_idx))
 236     return VNET_API_ERROR_INVALID_VALUE;
 237
 238   ipsec_ah_backend_t *b = pool_elt_at_index (im->ah_backends, backend_idx);
 239   im->ah_current_backend = backend_idx;
 240   im->ah4_encrypt_node_index = b->ah4_encrypt_node_index;
 241   im->ah4_decrypt_node_index = b->ah4_decrypt_node_index;
 242   im->ah4_encrypt_next_index = b->ah4_encrypt_next_index;
 243   im->ah4_decrypt_next_index = b->ah4_decrypt_next_index;
 244   im->ah6_encrypt_node_index = b->ah6_encrypt_node_index;
 245   im->ah6_decrypt_node_index = b->ah6_decrypt_node_index;
 246   im->ah6_encrypt_next_index = b->ah6_encrypt_next_index;
 247   im->ah6_decrypt_next_index = b->ah6_decrypt_next_index;
 248
 249   return 0;
 250 }
 251
 252 int
 253 ipsec_select_esp_backend (ipsec_main_t * im, u32 backend_idx)
 254 {
 255   if (ipsec_rsc_in_use (im))
 256     return VNET_API_ERROR_RSRC_IN_USE;
 257
 258   if (pool_is_free_index (im->esp_backends, backend_idx))
 259     return VNET_API_ERROR_INVALID_VALUE;
 260
 261   /* disable current backend */
 262   if (im->esp_current_backend != ~0)
 263     {
 264       ipsec_esp_backend_t *cb = pool_elt_at_index (im->esp_backends,
 265                                                    im->esp_current_backend);
 266       if (cb->enable_disable_cb)
 267         {
 268           if ((cb->enable_disable_cb) (0) != 0)
 269             return -1;
 270         }
 271     }
 272
 273   ipsec_esp_backend_t *b = pool_elt_at_index (im->esp_backends, backend_idx);
 274   im->esp_current_backend = backend_idx;
 275   im->esp4_encrypt_node_index = b->esp4_encrypt_node_index;
 276   im->esp4_decrypt_node_index = b->esp4_decrypt_node_index;
 277   im->esp4_encrypt_next_index = b->esp4_encrypt_next_index;
 278   im->esp4_decrypt_next_index = b->esp4_decrypt_next_index;
 279   im->esp6_encrypt_node_index = b->esp6_encrypt_node_index;
 280   im->esp6_decrypt_node_index = b->esp6_decrypt_node_index;
 281   im->esp6_encrypt_next_index = b->esp6_encrypt_next_index;
 282   im->esp6_decrypt_next_index = b->esp6_decrypt_next_index;
 283   im->esp4_decrypt_tun_node_index = b->esp4_decrypt_tun_node_index;
 284   im->esp4_decrypt_tun_next_index = b->esp4_decrypt_tun_next_index;
 285   im->esp6_decrypt_tun_node_index = b->esp6_decrypt_tun_node_index;
 286   im->esp6_decrypt_tun_next_index = b->esp6_decrypt_tun_next_index;
 287
 288   im->esp44_encrypt_tun_feature_index = b->esp44_encrypt_tun_feature_index;
 289   im->esp64_encrypt_tun_feature_index = b->esp64_encrypt_tun_feature_index;
 290   im->esp46_encrypt_tun_feature_index = b->esp46_encrypt_tun_feature_index;
 291   im->esp66_encrypt_tun_feature_index = b->esp66_encrypt_tun_feature_index;
 292
 293   if (b->enable_disable_cb)
 294     {
 295       if ((b->enable_disable_cb) (1) != 0)
 296         return -1;
 297     }
 298   return 0;
 299 }
 300
 301 void
 302 ipsec_set_async_mode (u32 is_enabled)
 303 {
 304   ipsec_main_t *im = &ipsec_main;
 305   ipsec_sa_t *sa;
 306
 307   /* lock all SAs before change im->async_mode */
 308   pool_foreach (sa, im->sad, (
 309                                {
 310                                fib_node_lock (&sa->node);
 311                                }));
 312
 313   im->async_mode = is_enabled;
 314
 315   /* change SA crypto op data before unlock them */
 316   pool_foreach (sa, im->sad, (
 317                                {
 318                                sa->crypto_op_data = is_enabled ?
 319                                sa->async_op_data.data : sa->sync_op_data.data;
 320                                fib_node_unlock (&sa->node);
 321                                }));
 322 }
 323
 324 static void
 325 crypto_engine_backend_register_post_node (vlib_main_t * vm)
 326 {
 327   esp_async_post_next_t *eit;
 328   esp_async_post_next_t *dit;
 329
 330   eit = &esp_encrypt_async_next;
 331   eit->esp4_post_next =
 332     vnet_crypto_register_post_node (vm, "esp4-encrypt-post");
 333   eit->esp6_post_next =
 334     vnet_crypto_register_post_node (vm, "esp6-encrypt-post");
 335   eit->esp4_tun_post_next =
 336     vnet_crypto_register_post_node (vm, "esp4-encrypt-tun-post");
 337   eit->esp6_tun_post_next =
 338     vnet_crypto_register_post_node (vm, "esp6-encrypt-tun-post");
 339
 340   dit = &esp_decrypt_async_next;
 341   dit->esp4_post_next =
 342     vnet_crypto_register_post_node (vm, "esp4-decrypt-post");
 343   dit->esp6_post_next =
 344     vnet_crypto_register_post_node (vm, "esp6-decrypt-post");
 345   dit->esp4_tun_post_next =
 346     vnet_crypto_register_post_node (vm, "esp4-decrypt-tun-post");
 347   dit->esp6_tun_post_next =
 348     vnet_crypto_register_post_node (vm, "esp6-decrypt-tun-post");
 349 }
 350
 351 static clib_error_t *
 352 ipsec_init (vlib_main_t * vm)
 353 {
 354   clib_error_t *error;
 355   ipsec_main_t *im = &ipsec_main;
 356   ipsec_main_crypto_alg_t *a;
 357
 358   /* Backend registration requires the feature arcs to be set up */
 359   if ((error = vlib_call_init_function (vm, vnet_feature_init)))
 360     return (error);
 361
 362   im->vnet_main = vnet_get_main ();
 363   im->vlib_main = vm;
 364
 365   im->spd_index_by_spd_id = hash_create (0, sizeof (uword));
 366   im->sa_index_by_sa_id = hash_create (0, sizeof (uword));
 367   im->spd_index_by_sw_if_index = hash_create (0, sizeof (uword));
 368
 369   vlib_node_t *node = vlib_get_node_by_name (vm, (u8 *) "error-drop");
 370   ASSERT (node);
 371   im->error_drop_node_index = node->index;
 372
 373   im->ah_current_backend = ~0;
 374   im->esp_current_backend = ~0;
 375
 376   u32 idx = ipsec_register_ah_backend (vm, im, "crypto engine backend",
 377                                        "ah4-encrypt",
 378                                        "ah4-decrypt",
 379                                        "ah6-encrypt",
 380                                        "ah6-decrypt",
 381                                        ipsec_check_ah_support,
 382                                        NULL);
 383
 384   im->ah_default_backend = idx;
 385   int rv = ipsec_select_ah_backend (im, idx);
 386   ASSERT (0 == rv);
 387   (void) (rv);                  // avoid warning
 388
 389   idx = ipsec_register_esp_backend (vm, im, "crypto engine backend",
 390                                     "esp4-encrypt",
 391                                     "esp4-encrypt-tun",
 392                                     "esp4-decrypt",
 393                                     "esp4-decrypt-tun",
 394                                     "esp6-encrypt",
 395                                     "esp6-encrypt-tun",
 396                                     "esp6-decrypt",
 397                                     "esp6-decrypt-tun",
 398                                     ipsec_check_esp_support,
 399                                     NULL, crypto_dispatch_enable_disable);
 400   im->esp_default_backend = idx;
 401
 402   rv = ipsec_select_esp_backend (im, idx);
 403   ASSERT (0 == rv);
 404   (void) (rv);                  // avoid warning
 405
 406   if ((error = vlib_call_init_function (vm, ipsec_cli_init)))
 407     return error;
 408
 409   vec_validate (im->crypto_algs, IPSEC_CRYPTO_N_ALG - 1);
 410
 411   a = im->crypto_algs + IPSEC_CRYPTO_ALG_NONE;
 412   a->enc_op_id = VNET_CRYPTO_OP_NONE;
 413   a->dec_op_id = VNET_CRYPTO_OP_NONE;
 414   a->alg = VNET_CRYPTO_ALG_NONE;
 415   a->iv_size = 0;
 416   a->block_size = 1;
 417
 418   a = im->crypto_algs + IPSEC_CRYPTO_ALG_DES_CBC;
 419   a->enc_op_id = VNET_CRYPTO_OP_DES_CBC_ENC;
 420   a->dec_op_id = VNET_CRYPTO_OP_DES_CBC_DEC;
 421   a->alg = VNET_CRYPTO_ALG_DES_CBC;
 422   a->iv_size = a->block_size = 8;
 423
 424   a = im->crypto_algs + IPSEC_CRYPTO_ALG_3DES_CBC;
 425   a->enc_op_id = VNET_CRYPTO_OP_3DES_CBC_ENC;
 426   a->dec_op_id = VNET_CRYPTO_OP_3DES_CBC_DEC;
 427   a->alg = VNET_CRYPTO_ALG_3DES_CBC;
 428   a->iv_size = a->block_size = 8;
 429
 430   a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_CBC_128;
 431   a->enc_op_id = VNET_CRYPTO_OP_AES_128_CBC_ENC;
 432   a->dec_op_id = VNET_CRYPTO_OP_AES_128_CBC_DEC;
 433   a->alg = VNET_CRYPTO_ALG_AES_128_CBC;
 434   a->iv_size = a->block_size = 16;
 435
 436   a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_CBC_192;
 437   a->enc_op_id = VNET_CRYPTO_OP_AES_192_CBC_ENC;
 438   a->dec_op_id = VNET_CRYPTO_OP_AES_192_CBC_DEC;
 439   a->alg = VNET_CRYPTO_ALG_AES_192_CBC;
 440   a->iv_size = a->block_size = 16;
 441
 442   a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_CBC_256;
 443   a->enc_op_id = VNET_CRYPTO_OP_AES_256_CBC_ENC;
 444   a->dec_op_id = VNET_CRYPTO_OP_AES_256_CBC_DEC;
 445   a->alg = VNET_CRYPTO_ALG_AES_256_CBC;
 446   a->iv_size = a->block_size = 16;
 447
 448   a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_GCM_128;
 449   a->enc_op_id = VNET_CRYPTO_OP_AES_128_GCM_ENC;
 450   a->dec_op_id = VNET_CRYPTO_OP_AES_128_GCM_DEC;
 451   a->alg = VNET_CRYPTO_ALG_AES_128_GCM;
 452   a->iv_size = 8;
 453   a->block_size = 16;
 454   a->icv_size = 16;
 455
 456   a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_GCM_192;
 457   a->enc_op_id = VNET_CRYPTO_OP_AES_192_GCM_ENC;
 458   a->dec_op_id = VNET_CRYPTO_OP_AES_192_GCM_DEC;
 459   a->alg = VNET_CRYPTO_ALG_AES_192_GCM;
 460   a->iv_size = 8;
 461   a->block_size = 16;
 462   a->icv_size = 16;
 463
 464   a = im->crypto_algs + IPSEC_CRYPTO_ALG_AES_GCM_256;
 465   a->enc_op_id = VNET_CRYPTO_OP_AES_256_GCM_ENC;
 466   a->dec_op_id = VNET_CRYPTO_OP_AES_256_GCM_DEC;
 467   a->alg = VNET_CRYPTO_ALG_AES_256_GCM;
 468   a->iv_size = 8;
 469   a->block_size = 16;
 470   a->icv_size = 16;
 471
 472   vec_validate (im->integ_algs, IPSEC_INTEG_N_ALG - 1);
 473   ipsec_main_integ_alg_t *i;
 474
 475   i = &im->integ_algs[IPSEC_INTEG_ALG_MD5_96];
 476   i->op_id = VNET_CRYPTO_OP_MD5_HMAC;
 477   i->alg = VNET_CRYPTO_ALG_HMAC_MD5;
 478   i->icv_size = 12;
 479
 480   i = &im->integ_algs[IPSEC_INTEG_ALG_SHA1_96];
 481   i->op_id = VNET_CRYPTO_OP_SHA1_HMAC;
 482   i->alg = VNET_CRYPTO_ALG_HMAC_SHA1;
 483   i->icv_size = 12;
 484
 485   i = &im->integ_algs[IPSEC_INTEG_ALG_SHA_256_96];
 486   i->op_id = VNET_CRYPTO_OP_SHA1_HMAC;
 487   i->alg = VNET_CRYPTO_ALG_HMAC_SHA256;
 488   i->icv_size = 12;
 489
 490   i = &im->integ_algs[IPSEC_INTEG_ALG_SHA_256_128];
 491   i->op_id = VNET_CRYPTO_OP_SHA256_HMAC;
 492   i->alg = VNET_CRYPTO_ALG_HMAC_SHA256;
 493   i->icv_size = 16;
 494
 495   i = &im->integ_algs[IPSEC_INTEG_ALG_SHA_384_192];
 496   i->op_id = VNET_CRYPTO_OP_SHA384_HMAC;
 497   i->alg = VNET_CRYPTO_ALG_HMAC_SHA384;
 498   i->icv_size = 24;
 499
 500   i = &im->integ_algs[IPSEC_INTEG_ALG_SHA_512_256];
 501   i->op_id = VNET_CRYPTO_OP_SHA512_HMAC;
 502   i->alg = VNET_CRYPTO_ALG_HMAC_SHA512;
 503   i->icv_size = 32;
 504
 505   vec_validate_aligned (im->ptd, vlib_num_workers (), CLIB_CACHE_LINE_BYTES);
 506
 507   im->ah4_enc_fq_index =
 508     vlib_frame_queue_main_init (ah4_encrypt_node.index, 0);
 509   im->ah4_dec_fq_index =
 510     vlib_frame_queue_main_init (ah4_decrypt_node.index, 0);
 511   im->ah6_enc_fq_index =
 512     vlib_frame_queue_main_init (ah6_encrypt_node.index, 0);
 513   im->ah6_dec_fq_index =
 514     vlib_frame_queue_main_init (ah6_decrypt_node.index, 0);
 515
 516   im->esp4_enc_fq_index =
 517     vlib_frame_queue_main_init (esp4_encrypt_node.index, 0);
 518   im->esp4_dec_fq_index =
 519     vlib_frame_queue_main_init (esp4_decrypt_node.index, 0);
 520   im->esp6_enc_fq_index =
 521     vlib_frame_queue_main_init (esp6_encrypt_node.index, 0);
 522   im->esp6_dec_fq_index =
 523     vlib_frame_queue_main_init (esp6_decrypt_node.index, 0);
 524   im->esp4_enc_tun_fq_index =
 525     vlib_frame_queue_main_init (esp4_encrypt_tun_node.index, 0);
 526   im->esp6_enc_tun_fq_index =
 527     vlib_frame_queue_main_init (esp6_encrypt_tun_node.index, 0);
 528   im->esp4_dec_tun_fq_index =
 529     vlib_frame_queue_main_init (esp4_decrypt_tun_node.index, 0);
 530   im->esp6_dec_tun_fq_index =
 531     vlib_frame_queue_main_init (esp6_decrypt_tun_node.index, 0);
 532
 533   im->async_mode = 0;
 534   crypto_engine_backend_register_post_node (vm);
 535
 536   return 0;
 537 }
 538
 539 VLIB_INIT_FUNCTION (ipsec_init);
 540
 541 /*
 542  * fd.io coding-style-patch-verification: ON
 543  *
 544  * Local Variables:
 545  * eval: (c-set-style "gnu")
 546  * End:
 547  */