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_hash_alg                                               \
  43   _ (SHA1, "sha-1")                                                           \
  44   _ (SHA224, "sha-224")                                                       \
  45   _ (SHA256, "sha-256")                                                       \
  46   _ (SHA384, "sha-384")                                                       \
  47   _ (SHA512, "sha-512")
  48
  49 #define foreach_crypto_hmac_alg \
  50   _(MD5, "md5") \
  51   _(SHA1, "sha-1") \
  52   _(SHA224, "sha-224")  \
  53   _(SHA256, "sha-256")  \
  54   _(SHA384, "sha-384")  \
  55   _(SHA512, "sha-512")
  56
  57 #define foreach_crypto_op_type                                                \
  58   _ (ENCRYPT, "encrypt")                                                      \
  59   _ (DECRYPT, "decrypt")                                                      \
  60   _ (AEAD_ENCRYPT, "aead-encrypt")                                            \
  61   _ (AEAD_DECRYPT, "aead-decrypt")                                            \
  62   _ (HMAC, "hmac")                                                            \
  63   _ (HASH, "hash")
  64
  65 typedef enum
  66 {
  67 #define _(n, s) VNET_CRYPTO_OP_TYPE_##n,
  68   foreach_crypto_op_type
  69 #undef _
  70     VNET_CRYPTO_OP_N_TYPES,
  71 } vnet_crypto_op_type_t;
  72
  73 #define foreach_crypto_op_status \
  74   _(IDLE, "idle") \
  75   _(PENDING, "pending") \
  76   _(WORK_IN_PROGRESS, "work-in-progress") \
  77   _(COMPLETED, "completed") \
  78   _(FAIL_NO_HANDLER, "no-handler") \
  79   _(FAIL_BAD_HMAC, "bad-hmac") \
  80   _(FAIL_ENGINE_ERR, "engine-error")
  81
  82 /** async crypto **/
  83
  84 /* CRYPTO_ID, PRETTY_NAME, KEY_LENGTH_IN_BYTES, TAG_LEN, AAD_LEN */
  85 #define foreach_crypto_aead_async_alg \
  86   _(AES_128_GCM, "aes-128-gcm-aad8", 16, 16, 8) \
  87   _(AES_128_GCM, "aes-128-gcm-aad12", 16, 16, 12) \
  88   _(AES_192_GCM, "aes-192-gcm-aad8", 24, 16, 8) \
  89   _(AES_192_GCM, "aes-192-gcm-aad12", 24, 16, 12) \
  90   _(AES_256_GCM, "aes-256-gcm-aad8", 32, 16, 8) \
  91   _(AES_256_GCM, "aes-256-gcm-aad12", 32, 16, 12) \
  92   _(CHACHA20_POLY1305, "chacha20-poly1305-aad8", 32, 16, 8) \
  93   _(CHACHA20_POLY1305, "chacha20-poly1305-aad12", 32, 16, 12)
  94
  95 /* CRYPTO_ID, INTEG_ID, PRETTY_NAME, KEY_LENGTH_IN_BYTES, DIGEST_LEN */
  96 #define foreach_crypto_link_async_alg                                         \
  97   _ (3DES_CBC, MD5, "3des-cbc-hmac-md5", 24, 12)                              \
  98   _ (AES_128_CBC, MD5, "aes-128-cbc-hmac-md5", 16, 12)                        \
  99   _ (AES_192_CBC, MD5, "aes-192-cbc-hmac-md5", 24, 12)                        \
 100   _ (AES_256_CBC, MD5, "aes-256-cbc-hmac-md5", 32, 12)                        \
 101   _ (3DES_CBC, SHA1, "3des-cbc-hmac-sha-1", 24, 12)                           \
 102   _ (AES_128_CBC, SHA1, "aes-128-cbc-hmac-sha-1", 16, 12)                     \
 103   _ (AES_192_CBC, SHA1, "aes-192-cbc-hmac-sha-1", 24, 12)                     \
 104   _ (AES_256_CBC, SHA1, "aes-256-cbc-hmac-sha-1", 32, 12)                     \
 105   _ (3DES_CBC, SHA224, "3des-cbc-hmac-sha-224", 24, 14)                       \
 106   _ (AES_128_CBC, SHA224, "aes-128-cbc-hmac-sha-224", 16, 14)                 \
 107   _ (AES_192_CBC, SHA224, "aes-192-cbc-hmac-sha-224", 24, 14)                 \
 108   _ (AES_256_CBC, SHA224, "aes-256-cbc-hmac-sha-224", 32, 14)                 \
 109   _ (3DES_CBC, SHA256, "3des-cbc-hmac-sha-256", 24, 16)                       \
 110   _ (AES_128_CBC, SHA256, "aes-128-cbc-hmac-sha-256", 16, 16)                 \
 111   _ (AES_192_CBC, SHA256, "aes-192-cbc-hmac-sha-256", 24, 16)                 \
 112   _ (AES_256_CBC, SHA256, "aes-256-cbc-hmac-sha-256", 32, 16)                 \
 113   _ (3DES_CBC, SHA384, "3des-cbc-hmac-sha-384", 24, 24)                       \
 114   _ (AES_128_CBC, SHA384, "aes-128-cbc-hmac-sha-384", 16, 24)                 \
 115   _ (AES_192_CBC, SHA384, "aes-192-cbc-hmac-sha-384", 24, 24)                 \
 116   _ (AES_256_CBC, SHA384, "aes-256-cbc-hmac-sha-384", 32, 24)                 \
 117   _ (3DES_CBC, SHA512, "3des-cbc-hmac-sha-512", 24, 32)                       \
 118   _ (AES_128_CBC, SHA512, "aes-128-cbc-hmac-sha-512", 16, 32)                 \
 119   _ (AES_192_CBC, SHA512, "aes-192-cbc-hmac-sha-512", 24, 32)                 \
 120   _ (AES_256_CBC, SHA512, "aes-256-cbc-hmac-sha-512", 32, 32)                 \
 121   _ (AES_128_CTR, SHA1, "aes-128-ctr-hmac-sha-1", 16, 12)                     \
 122   _ (AES_192_CTR, SHA1, "aes-192-ctr-hmac-sha-1", 24, 12)                     \
 123   _ (AES_256_CTR, SHA1, "aes-256-ctr-hmac-sha-1", 32, 12)
 124
 125 #define foreach_crypto_async_op_type \
 126   _(ENCRYPT, "async-encrypt") \
 127   _(DECRYPT, "async-decrypt")
 128
 129 typedef enum
 130 {
 131   VNET_CRYPTO_KEY_OP_ADD,
 132   VNET_CRYPTO_KEY_OP_DEL,
 133   VNET_CRYPTO_KEY_OP_MODIFY,
 134 } vnet_crypto_key_op_t;
 135
 136 typedef enum
 137 {
 138 #define _(n, s) VNET_CRYPTO_OP_STATUS_##n,
 139   foreach_crypto_op_status
 140 #undef _
 141     VNET_CRYPTO_OP_N_STATUS,
 142 } vnet_crypto_op_status_t;
 143
 144 /* *INDENT-OFF* */
 145 typedef enum
 146 {
 147   VNET_CRYPTO_ALG_NONE = 0,
 148 #define _(n, s, l) VNET_CRYPTO_ALG_##n,
 149   foreach_crypto_cipher_alg foreach_crypto_aead_alg
 150 #undef _
 151 #define _(n, s) VNET_CRYPTO_ALG_HMAC_##n,
 152     foreach_crypto_hmac_alg
 153 #undef _
 154 #define _(n, s) VNET_CRYPTO_ALG_HASH_##n,
 155       foreach_crypto_hash_alg
 156 #undef _
 157         VNET_CRYPTO_N_ALGS,
 158 } vnet_crypto_alg_t;
 159
 160 typedef enum
 161 {
 162 #define _(n, s) VNET_CRYPTO_ASYNC_OP_TYPE_##n,
 163   foreach_crypto_async_op_type
 164 #undef _
 165     VNET_CRYPTO_ASYNC_OP_N_TYPES,
 166 } vnet_crypto_async_op_type_t;
 167
 168 typedef enum
 169 {
 170   VNET_CRYPTO_ASYNC_ALG_NONE = 0,
 171 #define _(n, s, k, t, a) \
 172   VNET_CRYPTO_ALG_##n##_TAG##t##_AAD##a,
 173   foreach_crypto_aead_async_alg
 174 #undef _
 175 #define _(c, h, s, k ,d) \
 176   VNET_CRYPTO_ALG_##c##_##h##_TAG##d,
 177   foreach_crypto_link_async_alg
 178 #undef _
 179   VNET_CRYPTO_N_ASYNC_ALGS,
 180 } vnet_crypto_async_alg_t;
 181
 182 typedef enum
 183 {
 184   VNET_CRYPTO_ASYNC_OP_NONE = 0,
 185 #define _(n, s, k, t, a) \
 186   VNET_CRYPTO_OP_##n##_TAG##t##_AAD##a##_ENC, \
 187   VNET_CRYPTO_OP_##n##_TAG##t##_AAD##a##_DEC,
 188   foreach_crypto_aead_async_alg
 189 #undef _
 190 #define _(c, h, s, k ,d) \
 191   VNET_CRYPTO_OP_##c##_##h##_TAG##d##_ENC, \
 192   VNET_CRYPTO_OP_##c##_##h##_TAG##d##_DEC,
 193   foreach_crypto_link_async_alg
 194 #undef _
 195   VNET_CRYPTO_ASYNC_OP_N_IDS,
 196 } vnet_crypto_async_op_id_t;
 197
 198 typedef struct
 199 {
 200   union
 201   {
 202     struct
 203     {
 204       u8 *data;
 205       vnet_crypto_alg_t alg:8;
 206     };
 207     struct
 208     {
 209       u32 index_crypto;
 210       u32 index_integ;
 211       vnet_crypto_async_alg_t async_alg:8;
 212     };
 213   };
 214 #define VNET_CRYPTO_KEY_TYPE_DATA 0
 215 #define VNET_CRYPTO_KEY_TYPE_LINK 1
 216   u8 type;
 217 } vnet_crypto_key_t;
 218
 219 typedef enum
 220 {
 221   VNET_CRYPTO_OP_NONE = 0,
 222 #define _(n, s, l) VNET_CRYPTO_OP_##n##_ENC, VNET_CRYPTO_OP_##n##_DEC,
 223   foreach_crypto_cipher_alg foreach_crypto_aead_alg
 224 #undef _
 225 #define _(n, s) VNET_CRYPTO_OP_##n##_HMAC,
 226     foreach_crypto_hmac_alg
 227 #undef _
 228 #define _(n, s) VNET_CRYPTO_OP_##n##_HASH,
 229       foreach_crypto_hash_alg
 230 #undef _
 231         VNET_CRYPTO_N_OP_IDS,
 232 } vnet_crypto_op_id_t;
 233 /* *INDENT-ON* */
 234
 235 typedef enum
 236 {
 237   CRYPTO_OP_SIMPLE,
 238   CRYPTO_OP_CHAINED,
 239   CRYPTO_OP_BOTH,
 240 } crypto_op_class_type_t;
 241
 242 typedef struct
 243 {
 244   char *name;
 245   vnet_crypto_op_id_t op_by_type[VNET_CRYPTO_OP_N_TYPES];
 246 } vnet_crypto_alg_data_t;
 247
 248 typedef struct
 249 {
 250   u8 *src;
 251   u8 *dst;
 252   u32 len;
 253 } vnet_crypto_op_chunk_t;
 254
 255 typedef struct
 256 {
 257   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
 258   uword user_data;
 259   vnet_crypto_op_id_t op:16;
 260   vnet_crypto_op_status_t status:8;
 261   u8 flags;
 262 #define VNET_CRYPTO_OP_FLAG_INIT_IV (1 << 0)
 263 #define VNET_CRYPTO_OP_FLAG_HMAC_CHECK (1 << 1)
 264 #define VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS (1 << 2)
 265
 266   union
 267   {
 268     u8 digest_len;
 269     u8 tag_len;
 270   };
 271   u16 aad_len;
 272
 273   union
 274   {
 275     struct
 276     {
 277       u8 *src;
 278       u8 *dst;
 279     };
 280
 281     /* valid if VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS is set */
 282     u16 n_chunks;
 283   };
 284
 285   union
 286   {
 287     u32 len;
 288     /* valid if VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS is set */
 289     u32 chunk_index;
 290   };
 291
 292   u32 key_index;
 293   u8 *iv;
 294   u8 *aad;
 295
 296   union
 297   {
 298     u8 *tag;
 299     u8 *digest;
 300   };
 301 } vnet_crypto_op_t;
 302
 303 STATIC_ASSERT_SIZEOF (vnet_crypto_op_t, CLIB_CACHE_LINE_BYTES);
 304
 305 typedef struct
 306 {
 307   vnet_crypto_op_type_t type;
 308   vnet_crypto_alg_t alg;
 309   u32 active_engine_index_simple;
 310   u32 active_engine_index_chained;
 311 } vnet_crypto_op_data_t;
 312
 313 typedef struct
 314 {
 315   vnet_crypto_async_op_type_t type;
 316   vnet_crypto_async_alg_t alg;
 317   u32 active_engine_index_async;
 318 } vnet_crypto_async_op_data_t;
 319
 320 typedef struct
 321 {
 322   char *name;
 323   vnet_crypto_async_op_id_t op_by_type[VNET_CRYPTO_ASYNC_OP_N_TYPES];
 324 } vnet_crypto_async_alg_data_t;
 325
 326 typedef struct
 327 {
 328   u8 *iv;
 329   union
 330   {
 331     u8 *digest;
 332     u8 *tag;
 333   };
 334   u8 *aad;
 335   u32 key_index;
 336   u32 crypto_total_length;
 337   i16 crypto_start_offset; /* first buffer offset */
 338   i16 integ_start_offset;
 339   /* adj total_length for integ, e.g.4 bytes for IPSec ESN */
 340   u16 integ_length_adj;
 341   vnet_crypto_op_status_t status : 8;
 342   u8 flags; /**< share same VNET_CRYPTO_OP_FLAG_* values */
 343 } vnet_crypto_async_frame_elt_t;
 344
 345 /* Assert the size so the compiler will warn us when it changes */
 346 STATIC_ASSERT_SIZEOF (vnet_crypto_async_frame_elt_t, 5 * sizeof (u64));
 347
 348 typedef enum vnet_crypto_async_frame_state_t_
 349 {
 350   VNET_CRYPTO_FRAME_STATE_NOT_PROCESSED,
 351   /* frame waiting to be processed */
 352   VNET_CRYPTO_FRAME_STATE_PENDING,
 353   VNET_CRYPTO_FRAME_STATE_WORK_IN_PROGRESS,
 354   VNET_CRYPTO_FRAME_STATE_SUCCESS,
 355   VNET_CRYPTO_FRAME_STATE_ELT_ERROR
 356 } __clib_packed vnet_crypto_async_frame_state_t;
 357
 358 typedef struct
 359 {
 360   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
 361   vnet_crypto_async_frame_state_t state;
 362   vnet_crypto_async_op_id_t op:8;
 363   u16 n_elts;
 364   vnet_crypto_async_frame_elt_t elts[VNET_CRYPTO_FRAME_SIZE];
 365   u32 buffer_indices[VNET_CRYPTO_FRAME_SIZE];
 366   u16 next_node_index[VNET_CRYPTO_FRAME_SIZE];
 367   u32 enqueue_thread_index;
 368 } vnet_crypto_async_frame_t;
 369
 370 typedef struct
 371 {
 372   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
 373   vnet_crypto_async_frame_t *frame_pool;
 374   u32 *buffer_indices;
 375   u16 *nexts;
 376 } vnet_crypto_thread_t;
 377
 378 typedef u32 vnet_crypto_key_index_t;
 379
 380 typedef u32 (vnet_crypto_chained_ops_handler_t) (vlib_main_t * vm,
 381                                                  vnet_crypto_op_t * ops[],
 382                                                  vnet_crypto_op_chunk_t *
 383                                                  chunks, u32 n_ops);
 384
 385 typedef u32 (vnet_crypto_ops_handler_t) (vlib_main_t * vm,
 386                                          vnet_crypto_op_t * ops[], u32 n_ops);
 387
 388 typedef void (vnet_crypto_key_handler_t) (vlib_main_t * vm,
 389                                           vnet_crypto_key_op_t kop,
 390                                           vnet_crypto_key_index_t idx);
 391
 392 /** async crypto function handlers **/
 393 typedef int
 394   (vnet_crypto_frame_enqueue_t) (vlib_main_t * vm,
 395                                  vnet_crypto_async_frame_t * frame);
 396 typedef vnet_crypto_async_frame_t *
 397   (vnet_crypto_frame_dequeue_t) (vlib_main_t * vm, u32 * nb_elts_processed,
 398                                  u32 * enqueue_thread_idx);
 399
 400 u32
 401 vnet_crypto_register_engine (vlib_main_t * vm, char *name, int prio,
 402                              char *desc);
 403
 404 void vnet_crypto_register_ops_handler (vlib_main_t * vm, u32 engine_index,
 405                                        vnet_crypto_op_id_t opt,
 406                                        vnet_crypto_ops_handler_t * oph);
 407
 408 void vnet_crypto_register_chained_ops_handler (vlib_main_t * vm,
 409                                                u32 engine_index,
 410                                                vnet_crypto_op_id_t opt,
 411                                                vnet_crypto_chained_ops_handler_t
 412                                                * oph);
 413
 414 void vnet_crypto_register_ops_handlers (vlib_main_t * vm, u32 engine_index,
 415                                         vnet_crypto_op_id_t opt,
 416                                         vnet_crypto_ops_handler_t * fn,
 417                                         vnet_crypto_chained_ops_handler_t *
 418                                         cfn);
 419
 420 void vnet_crypto_register_key_handler (vlib_main_t * vm, u32 engine_index,
 421                                        vnet_crypto_key_handler_t * keyh);
 422
 423 /** async crypto register functions */
 424 u32 vnet_crypto_register_post_node (vlib_main_t * vm, char *post_node_name);
 425 void vnet_crypto_register_async_handler (vlib_main_t * vm,
 426                                          u32 engine_index,
 427                                          vnet_crypto_async_op_id_t opt,
 428                                          vnet_crypto_frame_enqueue_t * enq_fn,
 429                                          vnet_crypto_frame_dequeue_t *
 430                                          deq_fn);
 431
 432 typedef struct
 433 {
 434   char *name;
 435   char *desc;
 436   int priority;
 437   vnet_crypto_key_handler_t *key_op_handler;
 438   vnet_crypto_ops_handler_t *ops_handlers[VNET_CRYPTO_N_OP_IDS];
 439     vnet_crypto_chained_ops_handler_t
 440     * chained_ops_handlers[VNET_CRYPTO_N_OP_IDS];
 441   vnet_crypto_frame_enqueue_t *enqueue_handlers[VNET_CRYPTO_ASYNC_OP_N_IDS];
 442   vnet_crypto_frame_dequeue_t *dequeue_handlers[VNET_CRYPTO_ASYNC_OP_N_IDS];
 443 } vnet_crypto_engine_t;
 444
 445 typedef struct
 446 {
 447   u32 node_idx;
 448   u32 next_idx;
 449 } vnet_crypto_async_next_node_t;
 450
 451 typedef struct
 452 {
 453   vnet_crypto_alg_data_t *algs;
 454   vnet_crypto_thread_t *threads;
 455   vnet_crypto_ops_handler_t **ops_handlers;
 456   vnet_crypto_chained_ops_handler_t **chained_ops_handlers;
 457   vnet_crypto_frame_enqueue_t **enqueue_handlers;
 458   vnet_crypto_frame_dequeue_t **dequeue_handlers;
 459   clib_bitmap_t *async_active_ids;
 460   vnet_crypto_op_data_t opt_data[VNET_CRYPTO_N_OP_IDS];
 461   vnet_crypto_async_op_data_t async_opt_data[VNET_CRYPTO_ASYNC_OP_N_IDS];
 462   vnet_crypto_engine_t *engines;
 463   vnet_crypto_key_t *keys;
 464   uword *engine_index_by_name;
 465   uword *alg_index_by_name;
 466   uword *async_alg_index_by_name;
 467   vnet_crypto_async_alg_data_t *async_algs;
 468   u32 async_refcnt;
 469   vnet_crypto_async_next_node_t *next_nodes;
 470   u32 crypto_node_index;
 471 #define VNET_CRYPTO_ASYNC_DISPATCH_POLLING 0
 472 #define VNET_CRYPTO_ASYNC_DISPATCH_INTERRUPT 1
 473   u8 dispatch_mode;
 474 } vnet_crypto_main_t;
 475
 476 extern vnet_crypto_main_t crypto_main;
 477
 478 u32 vnet_crypto_process_chained_ops (vlib_main_t * vm, vnet_crypto_op_t ops[],
 479                                      vnet_crypto_op_chunk_t * chunks,
 480                                      u32 n_ops);
 481 u32 vnet_crypto_process_ops (vlib_main_t * vm, vnet_crypto_op_t ops[],
 482                              u32 n_ops);
 483
 484
 485 int vnet_crypto_set_handler2 (char *ops_handler_name, char *engine,
 486                               crypto_op_class_type_t oct);
 487 int vnet_crypto_is_set_handler (vnet_crypto_alg_t alg);
 488
 489 u32 vnet_crypto_key_add (vlib_main_t * vm, vnet_crypto_alg_t alg,
 490                          u8 * data, u16 length);
 491 void vnet_crypto_key_del (vlib_main_t * vm, vnet_crypto_key_index_t index);
 492
 493 /**
 494  * Use 2 created keys to generate new key for linked algs (cipher + integ)
 495  * The returned key index is to be used for linked alg only.
 496  **/
 497 u32 vnet_crypto_key_add_linked (vlib_main_t * vm,
 498                                 vnet_crypto_key_index_t index_crypto,
 499                                 vnet_crypto_key_index_t index_integ);
 500
 501 clib_error_t *crypto_dispatch_enable_disable (int is_enable);
 502
 503 int vnet_crypto_set_async_handler2 (char *alg_name, char *engine);
 504
 505 int vnet_crypto_is_set_async_handler (vnet_crypto_async_op_id_t opt);
 506
 507 void vnet_crypto_request_async_mode (int is_enable);
 508
 509 void vnet_crypto_set_async_dispatch_mode (u8 mode);
 510
 511 vnet_crypto_async_alg_t vnet_crypto_link_algs (vnet_crypto_alg_t crypto_alg,
 512                                                vnet_crypto_alg_t integ_alg);
 513
 514 clib_error_t *crypto_dispatch_enable_disable (int is_enable);
 515
 516 format_function_t format_vnet_crypto_alg;
 517 format_function_t format_vnet_crypto_engine;
 518 format_function_t format_vnet_crypto_op;
 519 format_function_t format_vnet_crypto_op_type;
 520 format_function_t format_vnet_crypto_op_status;
 521 unformat_function_t unformat_vnet_crypto_alg;
 522
 523 format_function_t format_vnet_crypto_async_op;
 524 format_function_t format_vnet_crypto_async_alg;
 525 format_function_t format_vnet_crypto_async_op_type;
 526
 527 static_always_inline void
 528 vnet_crypto_op_init (vnet_crypto_op_t * op, vnet_crypto_op_id_t type)
 529 {
 530   if (CLIB_DEBUG > 0)
 531     clib_memset (op, 0xfe, sizeof (*op));
 532   op->op = type;
 533   op->flags = 0;
 534   op->key_index = ~0;
 535   op->n_chunks = 0;
 536 }
 537
 538 static_always_inline vnet_crypto_op_type_t
 539 vnet_crypto_get_op_type (vnet_crypto_op_id_t id)
 540 {
 541   vnet_crypto_main_t *cm = &crypto_main;
 542   ASSERT (id < VNET_CRYPTO_N_OP_IDS);
 543   vnet_crypto_op_data_t *od = cm->opt_data + id;
 544   return od->type;
 545 }
 546
 547 static_always_inline vnet_crypto_key_t *
 548 vnet_crypto_get_key (vnet_crypto_key_index_t index)
 549 {
 550   vnet_crypto_main_t *cm = &crypto_main;
 551   return vec_elt_at_index (cm->keys, index);
 552 }
 553
 554 static_always_inline int
 555 vnet_crypto_set_handler (char *alg_name, char *engine)
 556 {
 557   return vnet_crypto_set_handler2 (alg_name, engine, CRYPTO_OP_BOTH);
 558 }
 559
 560 /** async crypto inline functions **/
 561
 562 static_always_inline vnet_crypto_async_frame_t *
 563 vnet_crypto_async_get_frame (vlib_main_t * vm, vnet_crypto_async_op_id_t opt)
 564 {
 565   vnet_crypto_main_t *cm = &crypto_main;
 566   vnet_crypto_thread_t *ct = cm->threads + vm->thread_index;
 567   vnet_crypto_async_frame_t *f = NULL;
 568
 569   pool_get_aligned (ct->frame_pool, f, CLIB_CACHE_LINE_BYTES);
 570   if (CLIB_DEBUG > 0)
 571     clib_memset (f, 0xfe, sizeof (*f));
 572   f->state = VNET_CRYPTO_FRAME_STATE_NOT_PROCESSED;
 573   f->op = opt;
 574   f->n_elts = 0;
 575
 576   return f;
 577 }
 578
 579 static_always_inline void
 580 vnet_crypto_async_free_frame (vlib_main_t * vm,
 581                               vnet_crypto_async_frame_t * frame)
 582 {
 583   vnet_crypto_main_t *cm = &crypto_main;
 584   vnet_crypto_thread_t *ct = cm->threads + vm->thread_index;
 585   pool_put (ct->frame_pool, frame);
 586 }
 587
 588 static_always_inline int
 589 vnet_crypto_async_submit_open_frame (vlib_main_t * vm,
 590                                      vnet_crypto_async_frame_t * frame)
 591 {
 592   vnet_crypto_main_t *cm = &crypto_main;
 593   vlib_thread_main_t *tm = vlib_get_thread_main ();
 594   vnet_crypto_async_op_id_t opt = frame->op;
 595   u32 i = vlib_num_workers () > 0;
 596
 597   frame->state = VNET_CRYPTO_FRAME_STATE_PENDING;
 598   frame->enqueue_thread_index = vm->thread_index;
 599
 600   int ret = (cm->enqueue_handlers[frame->op]) (vm, frame);
 601
 602   clib_bitmap_set_no_check (cm->async_active_ids, opt, 1);
 603   if (PREDICT_TRUE (ret == 0))
 604     {
 605       if (cm->dispatch_mode == VNET_CRYPTO_ASYNC_DISPATCH_INTERRUPT)
 606         {
 607           for (; i < tm->n_vlib_mains; i++)
 608             vlib_node_set_interrupt_pending (vlib_get_main_by_index (i),
 609                                              cm->crypto_node_index);
 610         }
 611     }
 612   else
 613     {
 614       frame->state = VNET_CRYPTO_FRAME_STATE_ELT_ERROR;
 615     }
 616
 617   return ret;
 618 }
 619
 620 static_always_inline void
 621 vnet_crypto_async_add_to_frame (vlib_main_t *vm, vnet_crypto_async_frame_t *f,
 622                                 u32 key_index, u32 crypto_len,
 623                                 i16 integ_len_adj, i16 crypto_start_offset,
 624                                 u16 integ_start_offset, u32 buffer_index,
 625                                 u16 next_node, u8 *iv, u8 *tag, u8 *aad,
 626                                 u8 flags)
 627 {
 628   vnet_crypto_async_frame_elt_t *fe;
 629   u16 index;
 630
 631   ASSERT (f->n_elts < VNET_CRYPTO_FRAME_SIZE);
 632
 633   index = f->n_elts;
 634   fe = &f->elts[index];
 635   f->n_elts++;
 636   fe->key_index = key_index;
 637   fe->crypto_total_length = crypto_len;
 638   fe->crypto_start_offset = crypto_start_offset;
 639   fe->integ_start_offset = integ_start_offset;
 640   fe->integ_length_adj = integ_len_adj;
 641   fe->iv = iv;
 642   fe->tag = tag;
 643   fe->aad = aad;
 644   fe->flags = flags;
 645   f->buffer_indices[index] = buffer_index;
 646   f->next_node_index[index] = next_node;
 647 }
 648
 649 static_always_inline void
 650 vnet_crypto_async_reset_frame (vnet_crypto_async_frame_t * f)
 651 {
 652   vnet_crypto_async_op_id_t opt;
 653   ASSERT (f != 0);
 654   ASSERT ((f->state == VNET_CRYPTO_FRAME_STATE_NOT_PROCESSED
 655            || f->state == VNET_CRYPTO_FRAME_STATE_ELT_ERROR));
 656   opt = f->op;
 657   if (CLIB_DEBUG > 0)
 658     clib_memset (f, 0xfe, sizeof (*f));
 659   f->state = VNET_CRYPTO_FRAME_STATE_NOT_PROCESSED;
 660   f->op = opt;
 661   f->n_elts = 0;
 662 }
 663
 664 static_always_inline u8
 665 vnet_crypto_async_frame_is_full (const vnet_crypto_async_frame_t *f)
 666 {
 667   return (f->n_elts == VNET_CRYPTO_FRAME_SIZE);
 668 }
 669
 670 #endif /* included_vnet_crypto_crypto_h */
 671
 672 /*
 673  * fd.io coding-style-patch-verification: ON
 674  *
 675  * Local Variables:
 676  * eval: (c-set-style "gnu")
 677  * End:
 678  */