src/plugins/crypto_ipsecmb/ipsecmb.c

   1 /*
   2  * ipsecmb.c - Intel IPSec Multi-buffer library Crypto Engine
   3  *
   4  * Copyright (c) 2019 Cisco Systemss
   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 <fcntl.h>
  19
  20 #include <intel-ipsec-mb.h>
  21
  22 #include <vnet/vnet.h>
  23 #include <vnet/plugin/plugin.h>
  24 #include <vpp/app/version.h>
  25 #include <vnet/crypto/crypto.h>
  26 #include <vppinfra/cpu.h>
  27
  28 typedef struct
  29 {
  30   MB_MGR *mgr;
  31   __m128i cbc_iv;
  32 } ipsecmb_per_thread_data_t;
  33
  34 typedef struct ipsecmb_main_t_
  35 {
  36   ipsecmb_per_thread_data_t *per_thread_data;
  37 } ipsecmb_main_t;
  38
  39 /**
  40  * AES GCM key=expansion VFT
  41  */
  42 typedef void (*ase_gcm_pre_t) (const void *key,
  43                                struct gcm_key_data * key_data);
  44
  45 typedef struct ipsecmb_gcm_pre_vft_t_
  46 {
  47   ase_gcm_pre_t ase_gcm_pre_128;
  48   ase_gcm_pre_t ase_gcm_pre_192;
  49   ase_gcm_pre_t ase_gcm_pre_256;
  50 } ipsecmb_gcm_pre_vft_t;
  51
  52 static ipsecmb_gcm_pre_vft_t ipsecmb_gcm_pre_vft;
  53
  54 #define INIT_IPSEC_MB_GCM_PRE(_arch)                                    \
  55   ipsecmb_gcm_pre_vft.ase_gcm_pre_128 = aes_gcm_pre_128_##_arch;        \
  56   ipsecmb_gcm_pre_vft.ase_gcm_pre_192 = aes_gcm_pre_192_##_arch;        \
  57   ipsecmb_gcm_pre_vft.ase_gcm_pre_256 = aes_gcm_pre_256_##_arch;
  58
  59 static ipsecmb_main_t ipsecmb_main;
  60
  61 #define foreach_ipsecmb_hmac_op                                \
  62   _(SHA1, SHA1, sha1)                                          \
  63   _(SHA256, SHA_256, sha256)                                   \
  64   _(SHA384, SHA_384, sha384)                                   \
  65   _(SHA512, SHA_512, sha512)
  66
  67 /*
  68  * (Alg, key-len-bits, key-len-bytes, iv-len-bytes)
  69  */
  70 #define foreach_ipsecmb_cbc_cipher_op                          \
  71   _(AES_128_CBC, 128, 16, 16)                                  \
  72   _(AES_192_CBC, 192, 24, 16)                                  \
  73   _(AES_256_CBC, 256, 32, 16)
  74
  75 /*
  76  * (Alg, key-len-bits, key-len-bytes, iv-len-bytes)
  77  */
  78 #define foreach_ipsecmb_gcm_cipher_op                          \
  79   _(AES_128_GCM, 128, 16, 12)                                  \
  80   _(AES_192_GCM, 192, 24, 12)                                  \
  81   _(AES_256_GCM, 256, 32, 12)
  82
  83 always_inline void
  84 hash_expand_keys (const MB_MGR * mgr,
  85                   const u8 * key,
  86                   u32 length,
  87                   u8 block_size,
  88                   u8 ipad[256], u8 opad[256], hash_one_block_t fn)
  89 {
  90   u8 buf[block_size];
  91   int i = 0;
  92
  93   if (length > block_size)
  94     {
  95       return;
  96     }
  97
  98   memset (buf, 0x36, sizeof (buf));
  99   for (i = 0; i < length; i++)
 100     {
 101       buf[i] ^= key[i];
 102     }
 103   fn (buf, ipad);
 104
 105   memset (buf, 0x5c, sizeof (buf));
 106
 107   for (i = 0; i < length; i++)
 108     {
 109       buf[i] ^= key[i];
 110     }
 111   fn (buf, opad);
 112 }
 113
 114 always_inline void
 115 ipsecmb_retire_hmac_job (JOB_AES_HMAC * job, u32 * n_fail)
 116 {
 117   vnet_crypto_op_t *op = job->user_data;
 118
 119   if (STS_COMPLETED != job->status)
 120     {
 121       op->status = VNET_CRYPTO_OP_STATUS_FAIL_BAD_HMAC;
 122       *n_fail = *n_fail + 1;
 123     }
 124   else
 125     op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
 126
 127   if (op->flags & VNET_CRYPTO_OP_FLAG_HMAC_CHECK)
 128     {
 129       if ((memcmp (op->digest, job->auth_tag_output, op->digest_len)))
 130         {
 131           *n_fail = *n_fail + 1;
 132           op->status = VNET_CRYPTO_OP_STATUS_FAIL_BAD_HMAC;
 133         }
 134     }
 135   else
 136     clib_memcpy_fast (op->digest, job->auth_tag_output, op->digest_len);
 137 }
 138
 139 static_always_inline u32
 140 ipsecmb_ops_hmac_inline (vlib_main_t * vm,
 141                          const ipsecmb_per_thread_data_t * ptd,
 142                          vnet_crypto_op_t * ops[],
 143                          u32 n_ops,
 144                          u32 block_size,
 145                          hash_one_block_t fn, JOB_HASH_ALG alg)
 146 {
 147   JOB_AES_HMAC *job;
 148   u32 i, n_fail = 0;
 149   u8 scratch[n_ops][64];
 150
 151   /*
 152    * queue all the jobs first ...
 153    */
 154   for (i = 0; i < n_ops; i++)
 155     {
 156       vnet_crypto_op_t *op = ops[i];
 157       u8 ipad[256], opad[256];
 158
 159       hash_expand_keys (ptd->mgr, op->key, op->key_len,
 160                         block_size, ipad, opad, fn);
 161
 162       job = IMB_GET_NEXT_JOB (ptd->mgr);
 163
 164       job->src = op->src;
 165       job->hash_start_src_offset_in_bytes = 0;
 166       job->msg_len_to_hash_in_bytes = op->len;
 167       job->hash_alg = alg;
 168       job->auth_tag_output_len_in_bytes = op->digest_len;
 169       job->auth_tag_output = scratch[i];
 170
 171       job->cipher_mode = NULL_CIPHER;
 172       job->cipher_direction = DECRYPT;
 173       job->chain_order = HASH_CIPHER;
 174
 175       job->aes_key_len_in_bytes = op->key_len;
 176
 177       job->u.HMAC._hashed_auth_key_xor_ipad = ipad;
 178       job->u.HMAC._hashed_auth_key_xor_opad = opad;
 179       job->user_data = op;
 180
 181       job = IMB_SUBMIT_JOB (ptd->mgr);
 182
 183       if (job)
 184         ipsecmb_retire_hmac_job (job, &n_fail);
 185     }
 186
 187   /*
 188    * .. then flush (i.e. complete) them
 189    *  We will have queued enough to satisfy the 'multi' buffer
 190    */
 191   while ((job = IMB_FLUSH_JOB (ptd->mgr)))
 192     {
 193       ipsecmb_retire_hmac_job (job, &n_fail);
 194     }
 195
 196   return n_ops - n_fail;
 197 }
 198
 199 #define _(a, b, c)                                                      \
 200 static_always_inline u32                                                \
 201 ipsecmb_ops_hmac_##a (vlib_main_t * vm,                                 \
 202                       vnet_crypto_op_t * ops[],                         \
 203                       u32 n_ops)                                        \
 204 {                                                                       \
 205   ipsecmb_per_thread_data_t *ptd;                                       \
 206   ipsecmb_main_t *imbm;                                                 \
 207                                                                         \
 208   imbm = &ipsecmb_main;                                                 \
 209   ptd = vec_elt_at_index (imbm->per_thread_data, vm->thread_index);     \
 210                                                                         \
 211   return ipsecmb_ops_hmac_inline (vm, ptd, ops, n_ops,                  \
 212                                   b##_BLOCK_SIZE,                       \
 213                                   ptd->mgr->c##_one_block,              \
 214                                   b);                                   \
 215   }
 216 foreach_ipsecmb_hmac_op;
 217 #undef _
 218
 219 #define EXPANDED_KEY_N_BYTES (16 * 15)
 220
 221 always_inline void
 222 ipsecmb_retire_cipher_job (JOB_AES_HMAC * job, u32 * n_fail)
 223 {
 224   vnet_crypto_op_t *op = job->user_data;
 225
 226   if (STS_COMPLETED != job->status)
 227     {
 228       op->status = VNET_CRYPTO_OP_STATUS_FAIL_BAD_HMAC;
 229       *n_fail = *n_fail + 1;
 230     }
 231   else
 232     op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
 233 }
 234
 235 static_always_inline u32
 236 ipsecmb_ops_cbc_cipher_inline (vlib_main_t * vm,
 237                                ipsecmb_per_thread_data_t * ptd,
 238                                vnet_crypto_op_t * ops[],
 239                                u32 n_ops, u32 key_len, u32 iv_len,
 240                                keyexp_t fn, JOB_CIPHER_DIRECTION direction)
 241 {
 242   JOB_AES_HMAC *job;
 243   u32 i, n_fail = 0;
 244
 245   /*
 246    * queue all the jobs first ...
 247    */
 248   for (i = 0; i < n_ops; i++)
 249     {
 250       u8 aes_enc_key_expanded[EXPANDED_KEY_N_BYTES];
 251       u8 aes_dec_key_expanded[EXPANDED_KEY_N_BYTES];
 252       vnet_crypto_op_t *op = ops[i];
 253       __m128i iv;
 254
 255       fn (op->key, aes_enc_key_expanded, aes_dec_key_expanded);
 256
 257       job = IMB_GET_NEXT_JOB (ptd->mgr);
 258
 259       job->src = op->src;
 260       job->dst = op->dst;
 261       job->msg_len_to_cipher_in_bytes = op->len;
 262       job->cipher_start_src_offset_in_bytes = 0;
 263
 264       job->hash_alg = NULL_HASH;
 265       job->cipher_mode = CBC;
 266       job->cipher_direction = direction;
 267       job->chain_order = (direction == ENCRYPT ? CIPHER_HASH : HASH_CIPHER);
 268
 269       if ((direction == ENCRYPT) && (op->flags & VNET_CRYPTO_OP_FLAG_INIT_IV))
 270         {
 271           iv = ptd->cbc_iv;
 272           _mm_storeu_si128 ((__m128i *) op->iv, iv);
 273           ptd->cbc_iv = _mm_aesenc_si128 (iv, iv);
 274         }
 275
 276       job->aes_key_len_in_bytes = key_len;
 277       job->aes_enc_key_expanded = aes_enc_key_expanded;
 278       job->aes_dec_key_expanded = aes_dec_key_expanded;
 279       job->iv = op->iv;
 280       job->iv_len_in_bytes = iv_len;
 281
 282       job->user_data = op;
 283
 284       job = IMB_SUBMIT_JOB (ptd->mgr);
 285
 286       if (job)
 287         ipsecmb_retire_cipher_job (job, &n_fail);
 288     }
 289
 290   /*
 291    * .. then flush (i.e. complete) them
 292    *  We will have queued enough to satisfy the 'multi' buffer
 293    */
 294   while ((job = IMB_FLUSH_JOB (ptd->mgr)))
 295     {
 296       ipsecmb_retire_cipher_job (job, &n_fail);
 297     }
 298
 299   return n_ops - n_fail;
 300 }
 301
 302 #define _(a, b, c, d)                                                   \
 303 static_always_inline u32                                                \
 304 ipsecmb_ops_cbc_cipher_enc_##a (vlib_main_t * vm,                       \
 305                                 vnet_crypto_op_t * ops[],               \
 306                                 u32 n_ops)                              \
 307 {                                                                       \
 308   ipsecmb_per_thread_data_t *ptd;                                       \
 309   ipsecmb_main_t *imbm;                                                 \
 310                                                                         \
 311   imbm = &ipsecmb_main;                                                 \
 312   ptd = vec_elt_at_index (imbm->per_thread_data, vm->thread_index);     \
 313                                                                         \
 314   return ipsecmb_ops_cbc_cipher_inline (vm, ptd, ops, n_ops, c, d,      \
 315                                         ptd->mgr->keyexp_##b,           \
 316                                         ENCRYPT);                       \
 317   }
 318 foreach_ipsecmb_cbc_cipher_op;
 319 #undef _
 320
 321 #define _(a, b, c, d)                                                   \
 322 static_always_inline u32                                                \
 323 ipsecmb_ops_cbc_cipher_dec_##a (vlib_main_t * vm,                       \
 324                                 vnet_crypto_op_t * ops[],               \
 325                                 u32 n_ops)                              \
 326 {                                                                       \
 327   ipsecmb_per_thread_data_t *ptd;                                       \
 328   ipsecmb_main_t *imbm;                                                 \
 329                                                                         \
 330   imbm = &ipsecmb_main;                                                 \
 331   ptd = vec_elt_at_index (imbm->per_thread_data, vm->thread_index);     \
 332                                                                         \
 333   return ipsecmb_ops_cbc_cipher_inline (vm, ptd, ops, n_ops, c, d,      \
 334                                         ptd->mgr->keyexp_##b,           \
 335                                         DECRYPT);                       \
 336   }
 337 foreach_ipsecmb_cbc_cipher_op;
 338 #undef _
 339
 340 always_inline void
 341 ipsecmb_retire_gcm_cipher_job (JOB_AES_HMAC * job,
 342                                u32 * n_fail, JOB_CIPHER_DIRECTION direction)
 343 {
 344   vnet_crypto_op_t *op = job->user_data;
 345
 346   if (STS_COMPLETED != job->status)
 347     {
 348       op->status = VNET_CRYPTO_OP_STATUS_FAIL_BAD_HMAC;
 349       *n_fail = *n_fail + 1;
 350     }
 351   else
 352     op->status = VNET_CRYPTO_OP_STATUS_COMPLETED;
 353
 354   if (DECRYPT == direction)
 355     {
 356       if ((memcmp (op->tag, job->auth_tag_output, op->tag_len)))
 357         {
 358           *n_fail = *n_fail + 1;
 359           op->status = VNET_CRYPTO_OP_STATUS_FAIL_BAD_HMAC;
 360         }
 361     }
 362 }
 363
 364 static_always_inline u32
 365 ipsecmb_ops_gcm_cipher_inline (vlib_main_t * vm,
 366                                ipsecmb_per_thread_data_t * ptd,
 367                                vnet_crypto_op_t * ops[],
 368                                u32 n_ops, u32 key_len, u32 iv_len,
 369                                ase_gcm_pre_t fn,
 370                                JOB_CIPHER_DIRECTION direction)
 371 {
 372   JOB_AES_HMAC *job;
 373   u32 i, n_fail = 0;
 374   u8 scratch[n_ops][64];
 375
 376   /*
 377    * queue all the jobs first ...
 378    */
 379   for (i = 0; i < n_ops; i++)
 380     {
 381       struct gcm_key_data key_data;
 382       vnet_crypto_op_t *op = ops[i];
 383       u32 nonce[3];
 384       __m128i iv;
 385
 386       fn (op->key, &key_data);
 387
 388       job = IMB_GET_NEXT_JOB (ptd->mgr);
 389
 390       job->src = op->src;
 391       job->dst = op->dst;
 392       job->msg_len_to_cipher_in_bytes = op->len;
 393       job->cipher_start_src_offset_in_bytes = 0;
 394
 395       job->hash_alg = AES_GMAC;
 396       job->cipher_mode = GCM;
 397       job->cipher_direction = direction;
 398       job->chain_order = (direction == ENCRYPT ? CIPHER_HASH : HASH_CIPHER);
 399
 400       if (direction == ENCRYPT)
 401         {
 402           if (op->flags & VNET_CRYPTO_OP_FLAG_INIT_IV)
 403             {
 404               iv = ptd->cbc_iv;
 405               // only use 8 bytes of the IV
 406               clib_memcpy_fast (op->iv, &iv, 8);
 407               ptd->cbc_iv = _mm_aesenc_si128 (iv, iv);
 408             }
 409           nonce[0] = op->salt;
 410           clib_memcpy_fast (nonce + 1, op->iv, 8);
 411           job->iv = (u8 *) nonce;
 412         }
 413       else
 414         {
 415           nonce[0] = op->salt;
 416           clib_memcpy_fast (nonce + 1, op->iv, 8);
 417           job->iv = op->iv;
 418         }
 419
 420       job->aes_key_len_in_bytes = key_len;
 421       job->aes_enc_key_expanded = &key_data;
 422       job->aes_dec_key_expanded = &key_data;
 423       job->iv_len_in_bytes = iv_len;
 424
 425       job->u.GCM.aad = op->aad;
 426       job->u.GCM.aad_len_in_bytes = op->aad_len;
 427       job->auth_tag_output_len_in_bytes = op->tag_len;
 428       if (DECRYPT == direction)
 429         job->auth_tag_output = scratch[i];
 430       else
 431         job->auth_tag_output = op->tag;
 432       job->user_data = op;
 433
 434       job = IMB_SUBMIT_JOB (ptd->mgr);
 435
 436       if (job)
 437         ipsecmb_retire_gcm_cipher_job (job, &n_fail, direction);
 438     }
 439
 440   /*
 441    * .. then flush (i.e. complete) them
 442    *  We will have queued enough to satisfy the 'multi' buffer
 443    */
 444   while ((job = IMB_FLUSH_JOB (ptd->mgr)))
 445     {
 446       ipsecmb_retire_gcm_cipher_job (job, &n_fail, direction);
 447     }
 448
 449   return n_ops - n_fail;
 450 }
 451
 452 #define _(a, b, c, d)                                                        \
 453 static_always_inline u32                                                     \
 454 ipsecmb_ops_gcm_cipher_enc_##a (vlib_main_t * vm,                            \
 455                                 vnet_crypto_op_t * ops[],                    \
 456                                 u32 n_ops)                                   \
 457 {                                                                            \
 458   ipsecmb_per_thread_data_t *ptd;                                            \
 459   ipsecmb_main_t *imbm;                                                      \
 460                                                                              \
 461   imbm = &ipsecmb_main;                                                      \
 462   ptd = vec_elt_at_index (imbm->per_thread_data, vm->thread_index);          \
 463                                                                              \
 464   return ipsecmb_ops_gcm_cipher_inline (vm, ptd, ops, n_ops, c, d,           \
 465                                         ipsecmb_gcm_pre_vft.ase_gcm_pre_##b, \
 466                                         ENCRYPT);                            \
 467   }
 468 foreach_ipsecmb_gcm_cipher_op;
 469 #undef _
 470
 471 #define _(a, b, c, d)                                                        \
 472 static_always_inline u32                                                     \
 473 ipsecmb_ops_gcm_cipher_dec_##a (vlib_main_t * vm,                            \
 474                                 vnet_crypto_op_t * ops[],                    \
 475                                 u32 n_ops)                                   \
 476 {                                                                            \
 477   ipsecmb_per_thread_data_t *ptd;                                            \
 478   ipsecmb_main_t *imbm;                                                      \
 479                                                                              \
 480   imbm = &ipsecmb_main;                                                      \
 481   ptd = vec_elt_at_index (imbm->per_thread_data, vm->thread_index);          \
 482                                                                              \
 483   return ipsecmb_ops_gcm_cipher_inline (vm, ptd, ops, n_ops, c, d,           \
 484                                         ipsecmb_gcm_pre_vft.ase_gcm_pre_##b, \
 485                                         DECRYPT);                            \
 486   }
 487 foreach_ipsecmb_gcm_cipher_op;
 488 #undef _
 489
 490 clib_error_t *
 491 crypto_ipsecmb_iv_init (ipsecmb_main_t * imbm)
 492 {
 493   ipsecmb_per_thread_data_t *ptd;
 494   clib_error_t *err = 0;
 495   int fd;
 496
 497   if ((fd = open ("/dev/urandom", O_RDONLY)) < 0)
 498     return clib_error_return_unix (0, "failed to open '/dev/urandom'");
 499
 500   vec_foreach (ptd, imbm->per_thread_data)
 501   {
 502     if (read (fd, &ptd->cbc_iv, sizeof (ptd->cbc_iv)) != sizeof (ptd->cbc_iv))
 503       {
 504         err = clib_error_return_unix (0, "'/dev/urandom' read failure");
 505         close (fd);
 506         return (err);
 507       }
 508   }
 509
 510   close (fd);
 511   return (NULL);
 512 }
 513
 514 static clib_error_t *
 515 crypto_ipsecmb_init (vlib_main_t * vm)
 516 {
 517   ipsecmb_main_t *imbm = &ipsecmb_main;
 518   ipsecmb_per_thread_data_t *ptd;
 519   vlib_thread_main_t *tm = vlib_get_thread_main ();
 520   clib_error_t *error;
 521   u32 eidx;
 522
 523   if ((error = vlib_call_init_function (vm, vnet_crypto_init)))
 524     return error;
 525
 526   /*
 527    * A priority that is better than OpenSSL but worse than VPP natvie
 528    */
 529   eidx = vnet_crypto_register_engine (vm, "ipsecmb", 80,
 530                                       "Intel IPSEC multi-buffer");
 531
 532   vec_validate (imbm->per_thread_data, tm->n_vlib_mains - 1);
 533
 534   if (clib_cpu_supports_avx512f ())
 535     {
 536       vec_foreach (ptd, imbm->per_thread_data)
 537       {
 538         ptd->mgr = alloc_mb_mgr (0);
 539         init_mb_mgr_avx512 (ptd->mgr);
 540         INIT_IPSEC_MB_GCM_PRE (avx_gen4);
 541       }
 542     }
 543   else if (clib_cpu_supports_avx2 ())
 544     {
 545       vec_foreach (ptd, imbm->per_thread_data)
 546       {
 547         ptd->mgr = alloc_mb_mgr (0);
 548         init_mb_mgr_avx2 (ptd->mgr);
 549         INIT_IPSEC_MB_GCM_PRE (avx_gen2);
 550       }
 551     }
 552   else
 553     {
 554       vec_foreach (ptd, imbm->per_thread_data)
 555       {
 556         ptd->mgr = alloc_mb_mgr (0);
 557         init_mb_mgr_sse (ptd->mgr);
 558         INIT_IPSEC_MB_GCM_PRE (sse);
 559       }
 560     }
 561
 562   if (clib_cpu_supports_x86_aes () && (error = crypto_ipsecmb_iv_init (imbm)))
 563     return (error);
 564
 565
 566 #define _(a, b, c)                                                       \
 567   vnet_crypto_register_ops_handler (vm, eidx, VNET_CRYPTO_OP_##a##_HMAC, \
 568                                     ipsecmb_ops_hmac_##a);               \
 569
 570   foreach_ipsecmb_hmac_op;
 571 #undef _
 572 #define _(a, b, c, d)                                                   \
 573   vnet_crypto_register_ops_handler (vm, eidx, VNET_CRYPTO_OP_##a##_ENC, \
 574                                     ipsecmb_ops_cbc_cipher_enc_##a);    \
 575
 576   foreach_ipsecmb_cbc_cipher_op;
 577 #undef _
 578 #define _(a, b, c, d)                                                   \
 579   vnet_crypto_register_ops_handler (vm, eidx, VNET_CRYPTO_OP_##a##_DEC, \
 580                                     ipsecmb_ops_cbc_cipher_dec_##a);    \
 581
 582   foreach_ipsecmb_cbc_cipher_op;
 583 #undef _
 584 #define _(a, b, c, d)                                                   \
 585   vnet_crypto_register_ops_handler (vm, eidx, VNET_CRYPTO_OP_##a##_ENC, \
 586                                     ipsecmb_ops_gcm_cipher_enc_##a);    \
 587
 588   foreach_ipsecmb_gcm_cipher_op;
 589 #undef _
 590 #define _(a, b, c, d)                                                   \
 591   vnet_crypto_register_ops_handler (vm, eidx, VNET_CRYPTO_OP_##a##_DEC, \
 592                                     ipsecmb_ops_gcm_cipher_dec_##a);    \
 593
 594   foreach_ipsecmb_gcm_cipher_op;
 595 #undef _
 596
 597   return (NULL);
 598 }
 599
 600 VLIB_INIT_FUNCTION (crypto_ipsecmb_init);
 601
 602 /* *INDENT-OFF* */
 603 VLIB_PLUGIN_REGISTER () =
 604 {
 605   .version = VPP_BUILD_VER,
 606   .description = "Intel IPSEC multi-buffer",
 607 };
 608 /* *INDENT-ON* */
 609
 610 /*
 611  * fd.io coding-style-patch-verification: ON
 612  *
 613  * Local Variables:
 614  * eval: (c-set-style "gnu")
 615  * End:
 616  */