src/vnet/crypto/crypto.h

   1 /*
   2  * Copyright (c) 2019 Cisco and/or its affiliates.
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at:
   6  *
   7  *     http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15
  16 #ifndef included_vnet_crypto_crypto_h
  17 #define included_vnet_crypto_crypto_h
  18
  19 #include <vlib/vlib.h>
  20
  21 #define VNET_CRYPTO_FRAME_SIZE 64
  22 #define VNET_CRYPTO_FRAME_POOL_SIZE 1024
  23
  24 /* CRYPTO_ID, PRETTY_NAME, KEY_LENGTH_IN_BYTES */
  25 #define foreach_crypto_cipher_alg \
  26   _(DES_CBC,     "des-cbc", 7) \
  27   _(3DES_CBC,    "3des-cbc", 24) \
  28   _(AES_128_CBC, "aes-128-cbc", 16) \
  29   _(AES_192_CBC, "aes-192-cbc", 24) \
  30   _(AES_256_CBC, "aes-256-cbc", 32) \
  31   _(AES_128_CTR, "aes-128-ctr", 16) \
  32   _(AES_192_CTR, "aes-192-ctr", 24) \
  33   _(AES_256_CTR, "aes-256-ctr", 32)
  34
  35 /* CRYPTO_ID, PRETTY_NAME, KEY_LENGTH_IN_BYTES */
  36 #define foreach_crypto_aead_alg \
  37   _(AES_128_GCM, "aes-128-gcm", 16) \
  38   _(AES_192_GCM, "aes-192-gcm", 24) \
  39   _(AES_256_GCM, "aes-256-gcm", 32) \
  40   _(CHACHA20_POLY1305, "chacha20-poly1305", 32)
  41
  42 #define foreach_crypto_hmac_alg \
  43   _(MD5, "md5") \
  44   _(SHA1, "sha-1") \
  45   _(SHA224, "sha-224")  \
  46   _(SHA256, "sha-256")  \
  47   _(SHA384, "sha-384")  \
  48   _(SHA512, "sha-512")
  49
  50 #define foreach_crypto_op_type \
  51   _(ENCRYPT, "encrypt") \
  52   _(DECRYPT, "decrypt") \
  53   _(AEAD_ENCRYPT, "aead-encrypt") \
  54   _(AEAD_DECRYPT, "aead-decrypt") \
  55   _(HMAC, "hmac")
  56
  57 typedef enum
  58 {
  59 #define _(n, s) VNET_CRYPTO_OP_TYPE_##n,
  60   foreach_crypto_op_type
  61 #undef _
  62     VNET_CRYPTO_OP_N_TYPES,
  63 } vnet_crypto_op_type_t;
  64
  65 #define foreach_crypto_op_status \
  66   _(IDLE, "idle") \
  67   _(PENDING, "pending") \
  68   _(WORK_IN_PROGRESS, "work-in-progress") \
  69   _(COMPLETED, "completed") \
  70   _(FAIL_NO_HANDLER, "no-handler") \
  71   _(FAIL_BAD_HMAC, "bad-hmac") \
  72   _(FAIL_ENGINE_ERR, "engine-error")
  73
  74 /** async crypto **/
  75
  76 /* CRYPTO_ID, PRETTY_NAME, KEY_LENGTH_IN_BYTES, TAG_LEN, AAD_LEN */
  77 #define foreach_crypto_aead_async_alg \
  78   _(AES_128_GCM, "aes-128-gcm-aad8", 16, 16, 8) \
  79   _(AES_128_GCM, "aes-128-gcm-aad12", 16, 16, 12) \
  80   _(AES_192_GCM, "aes-192-gcm-aad8", 24, 16, 8) \
  81   _(AES_192_GCM, "aes-192-gcm-aad12", 24, 16, 12) \
  82   _(AES_256_GCM, "aes-256-gcm-aad8", 32, 16, 8) \
  83   _(AES_256_GCM, "aes-256-gcm-aad12", 32, 16, 12) \
  84   _(CHACHA20_POLY1305, "chacha20-poly1305-aad8", 32, 16, 8) \
  85   _(CHACHA20_POLY1305, "chacha20-poly1305-aad12", 32, 16, 12)
  86
  87 /* CRYPTO_ID, INTEG_ID, PRETTY_NAME, KEY_LENGTH_IN_BYTES, DIGEST_LEN */
  88 #define foreach_crypto_link_async_alg                                         \
  89   _ (AES_128_CBC, SHA1, "aes-128-cbc-hmac-sha-1", 16, 12)                     \
  90   _ (AES_192_CBC, SHA1, "aes-192-cbc-hmac-sha-1", 24, 12)                     \
  91   _ (AES_256_CBC, SHA1, "aes-256-cbc-hmac-sha-1", 32, 12)                     \
  92   _ (AES_128_CBC, SHA224, "aes-128-cbc-hmac-sha-224", 16, 14)                 \
  93   _ (AES_192_CBC, SHA224, "aes-192-cbc-hmac-sha-224", 24, 14)                 \
  94   _ (AES_256_CBC, SHA224, "aes-256-cbc-hmac-sha-224", 32, 14)                 \
  95   _ (AES_128_CBC, SHA256, "aes-128-cbc-hmac-sha-256", 16, 16)                 \
  96   _ (AES_192_CBC, SHA256, "aes-192-cbc-hmac-sha-256", 24, 16)                 \
  97   _ (AES_256_CBC, SHA256, "aes-256-cbc-hmac-sha-256", 32, 16)                 \
  98   _ (AES_128_CBC, SHA384, "aes-128-cbc-hmac-sha-384", 16, 24)                 \
  99   _ (AES_192_CBC, SHA384, "aes-192-cbc-hmac-sha-384", 24, 24)                 \
 100   _ (AES_256_CBC, SHA384, "aes-256-cbc-hmac-sha-384", 32, 24)                 \
 101   _ (AES_128_CBC, SHA512, "aes-128-cbc-hmac-sha-512", 16, 32)                 \
 102   _ (AES_192_CBC, SHA512, "aes-192-cbc-hmac-sha-512", 24, 32)                 \
 103   _ (AES_256_CBC, SHA512, "aes-256-cbc-hmac-sha-512", 32, 32)                 \
 104   _ (AES_128_CTR, SHA1, "aes-128-ctr-hmac-sha-1", 16, 12)                     \
 105   _ (AES_192_CTR, SHA1, "aes-192-ctr-hmac-sha-1", 24, 12)                     \
 106   _ (AES_256_CTR, SHA1, "aes-256-ctr-hmac-sha-1", 32, 12)
 107
 108 #define foreach_crypto_async_op_type \
 109   _(ENCRYPT, "async-encrypt") \
 110   _(DECRYPT, "async-decrypt")
 111
 112 typedef enum
 113 {
 114   VNET_CRYPTO_KEY_OP_ADD,
 115   VNET_CRYPTO_KEY_OP_DEL,
 116   VNET_CRYPTO_KEY_OP_MODIFY,
 117 } vnet_crypto_key_op_t;
 118
 119 typedef enum
 120 {
 121 #define _(n, s) VNET_CRYPTO_OP_STATUS_##n,
 122   foreach_crypto_op_status
 123 #undef _
 124     VNET_CRYPTO_OP_N_STATUS,
 125 } vnet_crypto_op_status_t;
 126
 127 /* *INDENT-OFF* */
 128 typedef enum
 129 {
 130   VNET_CRYPTO_ALG_NONE = 0,
 131 #define _(n, s, l) VNET_CRYPTO_ALG_##n,
 132   foreach_crypto_cipher_alg
 133   foreach_crypto_aead_alg
 134 #undef _
 135 #define _(n, s) VNET_CRYPTO_ALG_HMAC_##n,
 136   foreach_crypto_hmac_alg
 137 #undef _
 138   VNET_CRYPTO_N_ALGS,
 139 } vnet_crypto_alg_t;
 140
 141 typedef enum
 142 {
 143 #define _(n, s) VNET_CRYPTO_ASYNC_OP_TYPE_##n,
 144   foreach_crypto_async_op_type
 145 #undef _
 146     VNET_CRYPTO_ASYNC_OP_N_TYPES,
 147 } vnet_crypto_async_op_type_t;
 148
 149 typedef enum
 150 {
 151   VNET_CRYPTO_ASYNC_ALG_NONE = 0,
 152 #define _(n, s, k, t, a) \
 153   VNET_CRYPTO_ALG_##n##_TAG##t##_AAD##a,
 154   foreach_crypto_aead_async_alg
 155 #undef _
 156 #define _(c, h, s, k ,d) \
 157   VNET_CRYPTO_ALG_##c##_##h##_TAG##d,
 158   foreach_crypto_link_async_alg
 159 #undef _
 160   VNET_CRYPTO_N_ASYNC_ALGS,
 161 } vnet_crypto_async_alg_t;
 162
 163 typedef enum
 164 {
 165   VNET_CRYPTO_ASYNC_OP_NONE = 0,
 166 #define _(n, s, k, t, a) \
 167   VNET_CRYPTO_OP_##n##_TAG##t##_AAD##a##_ENC, \
 168   VNET_CRYPTO_OP_##n##_TAG##t##_AAD##a##_DEC,
 169   foreach_crypto_aead_async_alg
 170 #undef _
 171 #define _(c, h, s, k ,d) \
 172   VNET_CRYPTO_OP_##c##_##h##_TAG##d##_ENC, \
 173   VNET_CRYPTO_OP_##c##_##h##_TAG##d##_DEC,
 174   foreach_crypto_link_async_alg
 175 #undef _
 176   VNET_CRYPTO_ASYNC_OP_N_IDS,
 177 } vnet_crypto_async_op_id_t;
 178
 179 typedef struct
 180 {
 181   union
 182   {
 183     struct
 184     {
 185       u8 *data;
 186       vnet_crypto_alg_t alg:8;
 187     };
 188     struct
 189     {
 190       u32 index_crypto;
 191       u32 index_integ;
 192       vnet_crypto_async_alg_t async_alg:8;
 193     };
 194   };
 195 #define VNET_CRYPTO_KEY_TYPE_DATA 0
 196 #define VNET_CRYPTO_KEY_TYPE_LINK 1
 197   u8 type;
 198 } vnet_crypto_key_t;
 199
 200 typedef enum
 201 {
 202   VNET_CRYPTO_OP_NONE = 0,
 203 #define _(n, s, l) VNET_CRYPTO_OP_##n##_ENC, VNET_CRYPTO_OP_##n##_DEC,
 204   foreach_crypto_cipher_alg
 205   foreach_crypto_aead_alg
 206 #undef _
 207 #define _(n, s) VNET_CRYPTO_OP_##n##_HMAC,
 208  foreach_crypto_hmac_alg
 209 #undef _
 210     VNET_CRYPTO_N_OP_IDS,
 211 } vnet_crypto_op_id_t;
 212 /* *INDENT-ON* */
 213
 214 typedef enum
 215 {
 216   CRYPTO_OP_SIMPLE,
 217   CRYPTO_OP_CHAINED,
 218   CRYPTO_OP_BOTH,
 219 } crypto_op_class_type_t;
 220
 221 typedef struct
 222 {
 223   char *name;
 224   vnet_crypto_op_id_t op_by_type[VNET_CRYPTO_OP_N_TYPES];
 225 } vnet_crypto_alg_data_t;
 226
 227 typedef struct
 228 {
 229   u8 *src;
 230   u8 *dst;
 231   u32 len;
 232 } vnet_crypto_op_chunk_t;
 233
 234 typedef struct
 235 {
 236   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
 237   uword user_data;
 238   vnet_crypto_op_id_t op:16;
 239   vnet_crypto_op_status_t status:8;
 240   u8 flags;
 241 #define VNET_CRYPTO_OP_FLAG_INIT_IV (1 << 0)
 242 #define VNET_CRYPTO_OP_FLAG_HMAC_CHECK (1 << 1)
 243 #define VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS (1 << 2)
 244
 245   union
 246   {
 247     u8 digest_len;
 248     u8 tag_len;
 249   };
 250   u16 aad_len;
 251
 252   union
 253   {
 254     struct
 255     {
 256       u8 *src;
 257       u8 *dst;
 258     };
 259
 260     /* valid if VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS is set */
 261     u16 n_chunks;
 262   };
 263
 264   union
 265   {
 266     u32 len;
 267     /* valid if VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS is set */
 268     u32 chunk_index;
 269   };
 270
 271   u32 key_index;
 272   u8 *iv;
 273   u8 *aad;
 274
 275   union
 276   {
 277     u8 *tag;
 278     u8 *digest;
 279   };
 280 } vnet_crypto_op_t;
 281
 282 STATIC_ASSERT_SIZEOF (vnet_crypto_op_t, CLIB_CACHE_LINE_BYTES);
 283
 284 typedef struct
 285 {
 286   vnet_crypto_op_type_t type;
 287   vnet_crypto_alg_t alg;
 288   u32 active_engine_index_simple;
 289   u32 active_engine_index_chained;
 290 } vnet_crypto_op_data_t;
 291
 292 typedef struct
 293 {
 294   vnet_crypto_async_op_type_t type;
 295   vnet_crypto_async_alg_t alg;
 296   u32 active_engine_index_async;
 297 } vnet_crypto_async_op_data_t;
 298
 299 typedef struct
 300 {
 301   char *name;
 302   vnet_crypto_async_op_id_t op_by_type[VNET_CRYPTO_ASYNC_OP_N_TYPES];
 303 } vnet_crypto_async_alg_data_t;
 304
 305 typedef struct
 306 {
 307   u8 *iv;
 308   union
 309   {
 310     u8 *digest;
 311     u8 *tag;
 312   };
 313   u8 *aad;
 314   u32 key_index;
 315   u32 crypto_total_length;
 316   i16 crypto_start_offset; /* first buffer offset */
 317   i16 integ_start_offset;
 318   /* adj total_length for integ, e.g.4 bytes for IPSec ESN */
 319   u16 integ_length_adj;
 320   vnet_crypto_op_status_t status : 8;
 321   u8 flags; /**< share same VNET_CRYPTO_OP_FLAG_* values */
 322 } vnet_crypto_async_frame_elt_t;
 323
 324 /* Assert the size so the compiler will warn us when it changes */
 325 STATIC_ASSERT_SIZEOF (vnet_crypto_async_frame_elt_t, 5 * sizeof (u64));
 326
 327 typedef enum vnet_crypto_async_frame_state_t_
 328 {
 329   VNET_CRYPTO_FRAME_STATE_NOT_PROCESSED,
 330   /* frame waiting to be processed */
 331   VNET_CRYPTO_FRAME_STATE_PENDING,
 332   VNET_CRYPTO_FRAME_STATE_WORK_IN_PROGRESS,
 333   VNET_CRYPTO_FRAME_STATE_SUCCESS,
 334   VNET_CRYPTO_FRAME_STATE_ELT_ERROR
 335 } __clib_packed vnet_crypto_async_frame_state_t;
 336
 337 typedef struct
 338 {
 339   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
 340   vnet_crypto_async_frame_state_t state;
 341   vnet_crypto_async_op_id_t op:8;
 342   u16 n_elts;
 343   vnet_crypto_async_frame_elt_t elts[VNET_CRYPTO_FRAME_SIZE];
 344   u32 buffer_indices[VNET_CRYPTO_FRAME_SIZE];
 345   u16 next_node_index[VNET_CRYPTO_FRAME_SIZE];
 346   u32 enqueue_thread_index;
 347 } vnet_crypto_async_frame_t;
 348
 349 typedef struct
 350 {
 351   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
 352   vnet_crypto_async_frame_t *frame_pool;
 353   u32 *buffer_indices;
 354   u16 *nexts;
 355 } vnet_crypto_thread_t;
 356
 357 typedef u32 vnet_crypto_key_index_t;
 358
 359 typedef u32 (vnet_crypto_chained_ops_handler_t) (vlib_main_t * vm,
 360                                                  vnet_crypto_op_t * ops[],
 361                                                  vnet_crypto_op_chunk_t *
 362                                                  chunks, u32 n_ops);
 363
 364 typedef u32 (vnet_crypto_ops_handler_t) (vlib_main_t * vm,
 365                                          vnet_crypto_op_t * ops[], u32 n_ops);
 366
 367 typedef void (vnet_crypto_key_handler_t) (vlib_main_t * vm,
 368                                           vnet_crypto_key_op_t kop,
 369                                           vnet_crypto_key_index_t idx);
 370
 371 /** async crypto function handlers **/
 372 typedef int
 373   (vnet_crypto_frame_enqueue_t) (vlib_main_t * vm,
 374                                  vnet_crypto_async_frame_t * frame);
 375 typedef vnet_crypto_async_frame_t *
 376   (vnet_crypto_frame_dequeue_t) (vlib_main_t * vm, u32 * nb_elts_processed,
 377                                  u32 * enqueue_thread_idx);
 378
 379 u32
 380 vnet_crypto_register_engine (vlib_main_t * vm, char *name, int prio,
 381                              char *desc);
 382
 383 void vnet_crypto_register_ops_handler (vlib_main_t * vm, u32 engine_index,
 384                                        vnet_crypto_op_id_t opt,
 385                                        vnet_crypto_ops_handler_t * oph);
 386
 387 void vnet_crypto_register_chained_ops_handler (vlib_main_t * vm,
 388                                                u32 engine_index,
 389                                                vnet_crypto_op_id_t opt,
 390                                                vnet_crypto_chained_ops_handler_t
 391                                                * oph);
 392
 393 void vnet_crypto_register_ops_handlers (vlib_main_t * vm, u32 engine_index,
 394                                         vnet_crypto_op_id_t opt,
 395                                         vnet_crypto_ops_handler_t * fn,
 396                                         vnet_crypto_chained_ops_handler_t *
 397                                         cfn);
 398
 399 void vnet_crypto_register_key_handler (vlib_main_t * vm, u32 engine_index,
 400                                        vnet_crypto_key_handler_t * keyh);
 401
 402 /** async crypto register functions */
 403 u32 vnet_crypto_register_post_node (vlib_main_t * vm, char *post_node_name);
 404 void vnet_crypto_register_async_handler (vlib_main_t * vm,
 405                                          u32 engine_index,
 406                                          vnet_crypto_async_op_id_t opt,
 407                                          vnet_crypto_frame_enqueue_t * enq_fn,
 408                                          vnet_crypto_frame_dequeue_t *
 409                                          deq_fn);
 410
 411 typedef struct
 412 {
 413   char *name;
 414   char *desc;
 415   int priority;
 416   vnet_crypto_key_handler_t *key_op_handler;
 417   vnet_crypto_ops_handler_t *ops_handlers[VNET_CRYPTO_N_OP_IDS];
 418     vnet_crypto_chained_ops_handler_t
 419     * chained_ops_handlers[VNET_CRYPTO_N_OP_IDS];
 420   vnet_crypto_frame_enqueue_t *enqueue_handlers[VNET_CRYPTO_ASYNC_OP_N_IDS];
 421   vnet_crypto_frame_dequeue_t *dequeue_handlers[VNET_CRYPTO_ASYNC_OP_N_IDS];
 422 } vnet_crypto_engine_t;
 423
 424 typedef struct
 425 {
 426   u32 node_idx;
 427   u32 next_idx;
 428 } vnet_crypto_async_next_node_t;
 429
 430 typedef struct
 431 {
 432   vnet_crypto_alg_data_t *algs;
 433   vnet_crypto_thread_t *threads;
 434   vnet_crypto_ops_handler_t **ops_handlers;
 435   vnet_crypto_chained_ops_handler_t **chained_ops_handlers;
 436   vnet_crypto_frame_enqueue_t **enqueue_handlers;
 437   vnet_crypto_frame_dequeue_t **dequeue_handlers;
 438   clib_bitmap_t *async_active_ids;
 439   vnet_crypto_op_data_t opt_data[VNET_CRYPTO_N_OP_IDS];
 440   vnet_crypto_async_op_data_t async_opt_data[VNET_CRYPTO_ASYNC_OP_N_IDS];
 441   vnet_crypto_engine_t *engines;
 442   vnet_crypto_key_t *keys;
 443   uword *engine_index_by_name;
 444   uword *alg_index_by_name;
 445   uword *async_alg_index_by_name;
 446   vnet_crypto_async_alg_data_t *async_algs;
 447   u32 async_refcnt;
 448   vnet_crypto_async_next_node_t *next_nodes;
 449   u32 crypto_node_index;
 450 #define VNET_CRYPTO_ASYNC_DISPATCH_POLLING 0
 451 #define VNET_CRYPTO_ASYNC_DISPATCH_INTERRUPT 1
 452   u8 dispatch_mode;
 453 } vnet_crypto_main_t;
 454
 455 extern vnet_crypto_main_t crypto_main;
 456
 457 u32 vnet_crypto_process_chained_ops (vlib_main_t * vm, vnet_crypto_op_t ops[],
 458                                      vnet_crypto_op_chunk_t * chunks,
 459                                      u32 n_ops);
 460 u32 vnet_crypto_process_ops (vlib_main_t * vm, vnet_crypto_op_t ops[],
 461                              u32 n_ops);
 462
 463
 464 int vnet_crypto_set_handler2 (char *ops_handler_name, char *engine,
 465                               crypto_op_class_type_t oct);
 466 int vnet_crypto_is_set_handler (vnet_crypto_alg_t alg);
 467
 468 u32 vnet_crypto_key_add (vlib_main_t * vm, vnet_crypto_alg_t alg,
 469                          u8 * data, u16 length);
 470 void vnet_crypto_key_del (vlib_main_t * vm, vnet_crypto_key_index_t index);
 471
 472 /**
 473  * Use 2 created keys to generate new key for linked algs (cipher + integ)
 474  * The returned key index is to be used for linked alg only.
 475  **/
 476 u32 vnet_crypto_key_add_linked (vlib_main_t * vm,
 477                                 vnet_crypto_key_index_t index_crypto,
 478                                 vnet_crypto_key_index_t index_integ);
 479
 480 clib_error_t *crypto_dispatch_enable_disable (int is_enable);
 481
 482 int vnet_crypto_set_async_handler2 (char *alg_name, char *engine);
 483
 484 int vnet_crypto_is_set_async_handler (vnet_crypto_async_op_id_t opt);
 485
 486 void vnet_crypto_request_async_mode (int is_enable);
 487
 488 void vnet_crypto_set_async_dispatch_mode (u8 mode);
 489
 490 vnet_crypto_async_alg_t vnet_crypto_link_algs (vnet_crypto_alg_t crypto_alg,
 491                                                vnet_crypto_alg_t integ_alg);
 492
 493 clib_error_t *crypto_dispatch_enable_disable (int is_enable);
 494
 495 format_function_t format_vnet_crypto_alg;
 496 format_function_t format_vnet_crypto_engine;
 497 format_function_t format_vnet_crypto_op;
 498 format_function_t format_vnet_crypto_op_type;
 499 format_function_t format_vnet_crypto_op_status;
 500 unformat_function_t unformat_vnet_crypto_alg;
 501
 502 format_function_t format_vnet_crypto_async_op;
 503 format_function_t format_vnet_crypto_async_alg;
 504 format_function_t format_vnet_crypto_async_op_type;
 505
 506 static_always_inline void
 507 vnet_crypto_op_init (vnet_crypto_op_t * op, vnet_crypto_op_id_t type)
 508 {
 509   if (CLIB_DEBUG > 0)
 510     clib_memset (op, 0xfe, sizeof (*op));
 511   op->op = type;
 512   op->flags = 0;
 513   op->key_index = ~0;
 514   op->n_chunks = 0;
 515 }
 516
 517 static_always_inline vnet_crypto_op_type_t
 518 vnet_crypto_get_op_type (vnet_crypto_op_id_t id)
 519 {
 520   vnet_crypto_main_t *cm = &crypto_main;
 521   ASSERT (id < VNET_CRYPTO_N_OP_IDS);
 522   vnet_crypto_op_data_t *od = cm->opt_data + id;
 523   return od->type;
 524 }
 525
 526 static_always_inline vnet_crypto_key_t *
 527 vnet_crypto_get_key (vnet_crypto_key_index_t index)
 528 {
 529   vnet_crypto_main_t *cm = &crypto_main;
 530   return vec_elt_at_index (cm->keys, index);
 531 }
 532
 533 static_always_inline int
 534 vnet_crypto_set_handler (char *alg_name, char *engine)
 535 {
 536   return vnet_crypto_set_handler2 (alg_name, engine, CRYPTO_OP_BOTH);
 537 }
 538
 539 /** async crypto inline functions **/
 540
 541 static_always_inline vnet_crypto_async_frame_t *
 542 vnet_crypto_async_get_frame (vlib_main_t * vm, vnet_crypto_async_op_id_t opt)
 543 {
 544   vnet_crypto_main_t *cm = &crypto_main;
 545   vnet_crypto_thread_t *ct = cm->threads + vm->thread_index;
 546   vnet_crypto_async_frame_t *f = NULL;
 547
 548   pool_get_aligned (ct->frame_pool, f, CLIB_CACHE_LINE_BYTES);
 549   if (CLIB_DEBUG > 0)
 550     clib_memset (f, 0xfe, sizeof (*f));
 551   f->state = VNET_CRYPTO_FRAME_STATE_NOT_PROCESSED;
 552   f->op = opt;
 553   f->n_elts = 0;
 554
 555   return f;
 556 }
 557
 558 static_always_inline void
 559 vnet_crypto_async_free_frame (vlib_main_t * vm,
 560                               vnet_crypto_async_frame_t * frame)
 561 {
 562   vnet_crypto_main_t *cm = &crypto_main;
 563   vnet_crypto_thread_t *ct = cm->threads + vm->thread_index;
 564   pool_put (ct->frame_pool, frame);
 565 }
 566
 567 static_always_inline int
 568 vnet_crypto_async_submit_open_frame (vlib_main_t * vm,
 569                                      vnet_crypto_async_frame_t * frame)
 570 {
 571   vnet_crypto_main_t *cm = &crypto_main;
 572   vlib_thread_main_t *tm = vlib_get_thread_main ();
 573   vnet_crypto_async_op_id_t opt = frame->op;
 574   u32 i = vlib_num_workers () > 0;
 575
 576   frame->state = VNET_CRYPTO_FRAME_STATE_PENDING;
 577   frame->enqueue_thread_index = vm->thread_index;
 578
 579   int ret = (cm->enqueue_handlers[frame->op]) (vm, frame);
 580
 581   clib_bitmap_set_no_check (cm->async_active_ids, opt, 1);
 582   if (PREDICT_TRUE (ret == 0))
 583     {
 584       if (cm->dispatch_mode == VNET_CRYPTO_ASYNC_DISPATCH_INTERRUPT)
 585         {
 586           for (; i < tm->n_vlib_mains; i++)
 587             vlib_node_set_interrupt_pending (vlib_get_main_by_index (i),
 588                                              cm->crypto_node_index);
 589         }
 590     }
 591   else
 592     {
 593       frame->state = VNET_CRYPTO_FRAME_STATE_ELT_ERROR;
 594     }
 595
 596   return ret;
 597 }
 598
 599 static_always_inline void
 600 vnet_crypto_async_add_to_frame (vlib_main_t *vm, vnet_crypto_async_frame_t *f,
 601                                 u32 key_index, u32 crypto_len,
 602                                 i16 integ_len_adj, i16 crypto_start_offset,
 603                                 u16 integ_start_offset, u32 buffer_index,
 604                                 u16 next_node, u8 *iv, u8 *tag, u8 *aad,
 605                                 u8 flags)
 606 {
 607   vnet_crypto_async_frame_elt_t *fe;
 608   u16 index;
 609
 610   ASSERT (f->n_elts < VNET_CRYPTO_FRAME_SIZE);
 611
 612   index = f->n_elts;
 613   fe = &f->elts[index];
 614   f->n_elts++;
 615   fe->key_index = key_index;
 616   fe->crypto_total_length = crypto_len;
 617   fe->crypto_start_offset = crypto_start_offset;
 618   fe->integ_start_offset = integ_start_offset;
 619   fe->integ_length_adj = integ_len_adj;
 620   fe->iv = iv;
 621   fe->tag = tag;
 622   fe->aad = aad;
 623   fe->flags = flags;
 624   f->buffer_indices[index] = buffer_index;
 625   f->next_node_index[index] = next_node;
 626 }
 627
 628 static_always_inline void
 629 vnet_crypto_async_reset_frame (vnet_crypto_async_frame_t * f)
 630 {
 631   vnet_crypto_async_op_id_t opt;
 632   ASSERT (f != 0);
 633   ASSERT ((f->state == VNET_CRYPTO_FRAME_STATE_NOT_PROCESSED
 634            || f->state == VNET_CRYPTO_FRAME_STATE_ELT_ERROR));
 635   opt = f->op;
 636   if (CLIB_DEBUG > 0)
 637     clib_memset (f, 0xfe, sizeof (*f));
 638   f->state = VNET_CRYPTO_FRAME_STATE_NOT_PROCESSED;
 639   f->op = opt;
 640   f->n_elts = 0;
 641 }
 642
 643 static_always_inline u8
 644 vnet_crypto_async_frame_is_full (const vnet_crypto_async_frame_t *f)
 645 {
 646   return (f->n_elts == VNET_CRYPTO_FRAME_SIZE);
 647 }
 648
 649 #endif /* included_vnet_crypto_crypto_h */
 650
 651 /*
 652  * fd.io coding-style-patch-verification: ON
 653  *
 654  * Local Variables:
 655  * eval: (c-set-style "gnu")
 656  * End:
 657  */