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
  23 /* CRYPTO_ID, PRETTY_NAME, KEY_LENGTH_IN_BYTES */
  24 #define foreach_crypto_cipher_alg \
  25   _(DES_CBC,     "des-cbc", 7) \
  26   _(3DES_CBC,    "3des-cbc", 24) \
  27   _(AES_128_CBC, "aes-128-cbc", 16) \
  28   _(AES_192_CBC, "aes-192-cbc", 24) \
  29   _(AES_256_CBC, "aes-256-cbc", 32) \
  30   _(AES_128_CTR, "aes-128-ctr", 16) \
  31   _(AES_192_CTR, "aes-192-ctr", 24) \
  32   _(AES_256_CTR, "aes-256-ctr", 32)
  33
  34 /* CRYPTO_ID, PRETTY_NAME, KEY_LENGTH_IN_BYTES */
  35 #define foreach_crypto_aead_alg \
  36   _(AES_128_GCM, "aes-128-gcm", 16) \
  37   _(AES_192_GCM, "aes-192-gcm", 24) \
  38   _(AES_256_GCM, "aes-256-gcm", 32) \
  39   _(CHACHA20_POLY1305, "chacha20-poly1305", 32)
  40
  41 #define foreach_crypto_hmac_alg \
  42   _(MD5, "md5") \
  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_op_type \
  50   _(ENCRYPT, "encrypt") \
  51   _(DECRYPT, "decrypt") \
  52   _(AEAD_ENCRYPT, "aead-encrypt") \
  53   _(AEAD_DECRYPT, "aead-decrypt") \
  54   _(HMAC, "hmac")
  55
  56 typedef enum
  57 {
  58 #define _(n, s) VNET_CRYPTO_OP_TYPE_##n,
  59   foreach_crypto_op_type
  60 #undef _
  61     VNET_CRYPTO_OP_N_TYPES,
  62 } vnet_crypto_op_type_t;
  63
  64 #define foreach_crypto_op_status \
  65   _(IDLE, "idle") \
  66   _(PENDING, "pending") \
  67   _(WORK_IN_PROGRESS, "work-in-progress") \
  68   _(COMPLETED, "completed") \
  69   _(FAIL_NO_HANDLER, "no-handler") \
  70   _(FAIL_BAD_HMAC, "bad-hmac") \
  71   _(FAIL_ENGINE_ERR, "engine-error")
  72
  73 /** async crypto **/
  74
  75 /* CRYPTO_ID, PRETTY_NAME, KEY_LENGTH_IN_BYTES, TAG_LEN, AAD_LEN */
  76 #define foreach_crypto_aead_async_alg \
  77   _(AES_128_GCM, "aes-128-gcm-aad8", 16, 16, 8) \
  78   _(AES_128_GCM, "aes-128-gcm-aad12", 16, 16, 12) \
  79   _(AES_192_GCM, "aes-192-gcm-aad8", 24, 16, 8) \
  80   _(AES_192_GCM, "aes-192-gcm-aad12", 24, 16, 12) \
  81   _(AES_256_GCM, "aes-256-gcm-aad8", 32, 16, 8) \
  82   _(AES_256_GCM, "aes-256-gcm-aad12", 32, 16, 12) \
  83   _(CHACHA20_POLY1305, "chacha20-poly1305-aad8", 32, 16, 8) \
  84   _(CHACHA20_POLY1305, "chacha20-poly1305-aad12", 32, 16, 12)
  85
  86 /* CRYPTO_ID, INTEG_ID, PRETTY_NAME, KEY_LENGTH_IN_BYTES, DIGEST_LEN */
  87 #define foreach_crypto_link_async_alg \
  88   _ (AES_128_CBC, SHA1, "aes-128-cbc-hmac-sha-1", 16, 12) \
  89   _ (AES_192_CBC, SHA1, "aes-192-cbc-hmac-sha-1", 24, 12) \
  90   _ (AES_256_CBC, SHA1, "aes-256-cbc-hmac-sha-1", 32, 12) \
  91   _ (AES_128_CBC, SHA224, "aes-128-cbc-hmac-sha-224", 16, 14) \
  92   _ (AES_192_CBC, SHA224, "aes-192-cbc-hmac-sha-224", 24, 14) \
  93   _ (AES_256_CBC, SHA224, "aes-256-cbc-hmac-sha-224", 32, 14) \
  94   _ (AES_128_CBC, SHA256, "aes-128-cbc-hmac-sha-256", 16, 16) \
  95   _ (AES_192_CBC, SHA256, "aes-192-cbc-hmac-sha-256", 24, 16) \
  96   _ (AES_256_CBC, SHA256, "aes-256-cbc-hmac-sha-256", 32, 16) \
  97   _ (AES_128_CBC, SHA384, "aes-128-cbc-hmac-sha-384", 16, 24) \
  98   _ (AES_192_CBC, SHA384, "aes-192-cbc-hmac-sha-384", 24, 24) \
  99   _ (AES_256_CBC, SHA384, "aes-256-cbc-hmac-sha-384", 32, 24) \
 100   _ (AES_128_CBC, SHA512, "aes-128-cbc-hmac-sha-512", 16, 32) \
 101   _ (AES_192_CBC, SHA512, "aes-192-cbc-hmac-sha-512", 24, 32) \
 102   _ (AES_256_CBC, SHA512, "aes-256-cbc-hmac-sha-512", 32, 32)
 103
 104 #define foreach_crypto_async_op_type \
 105   _(ENCRYPT, "async-encrypt") \
 106   _(DECRYPT, "async-decrypt")
 107
 108 typedef enum
 109 {
 110   VNET_CRYPTO_KEY_OP_ADD,
 111   VNET_CRYPTO_KEY_OP_DEL,
 112   VNET_CRYPTO_KEY_OP_MODIFY,
 113 } vnet_crypto_key_op_t;
 114
 115 typedef enum
 116 {
 117 #define _(n, s) VNET_CRYPTO_OP_STATUS_##n,
 118   foreach_crypto_op_status
 119 #undef _
 120     VNET_CRYPTO_OP_N_STATUS,
 121 } vnet_crypto_op_status_t;
 122
 123 /* *INDENT-OFF* */
 124 typedef enum
 125 {
 126   VNET_CRYPTO_ALG_NONE = 0,
 127 #define _(n, s, l) VNET_CRYPTO_ALG_##n,
 128   foreach_crypto_cipher_alg
 129   foreach_crypto_aead_alg
 130 #undef _
 131 #define _(n, s) VNET_CRYPTO_ALG_HMAC_##n,
 132   foreach_crypto_hmac_alg
 133 #undef _
 134   VNET_CRYPTO_N_ALGS,
 135 } vnet_crypto_alg_t;
 136
 137 typedef enum
 138 {
 139 #define _(n, s) VNET_CRYPTO_ASYNC_OP_TYPE_##n,
 140   foreach_crypto_async_op_type
 141 #undef _
 142     VNET_CRYPTO_ASYNC_OP_N_TYPES,
 143 } vnet_crypto_async_op_type_t;
 144
 145 typedef enum
 146 {
 147   VNET_CRYPTO_ASYNC_ALG_NONE = 0,
 148 #define _(n, s, k, t, a) \
 149   VNET_CRYPTO_ALG_##n##_TAG##t##_AAD##a,
 150   foreach_crypto_aead_async_alg
 151 #undef _
 152 #define _(c, h, s, k ,d) \
 153   VNET_CRYPTO_ALG_##c##_##h##_TAG##d,
 154   foreach_crypto_link_async_alg
 155 #undef _
 156   VNET_CRYPTO_N_ASYNC_ALGS,
 157 } vnet_crypto_async_alg_t;
 158
 159 typedef enum
 160 {
 161   VNET_CRYPTO_ASYNC_OP_NONE = 0,
 162 #define _(n, s, k, t, a) \
 163   VNET_CRYPTO_OP_##n##_TAG##t##_AAD##a##_ENC, \
 164   VNET_CRYPTO_OP_##n##_TAG##t##_AAD##a##_DEC,
 165   foreach_crypto_aead_async_alg
 166 #undef _
 167 #define _(c, h, s, k ,d) \
 168   VNET_CRYPTO_OP_##c##_##h##_TAG##d##_ENC, \
 169   VNET_CRYPTO_OP_##c##_##h##_TAG##d##_DEC,
 170   foreach_crypto_link_async_alg
 171 #undef _
 172   VNET_CRYPTO_ASYNC_OP_N_IDS,
 173 } vnet_crypto_async_op_id_t;
 174
 175 typedef struct
 176 {
 177   union
 178   {
 179     struct
 180     {
 181       u8 *data;
 182       vnet_crypto_alg_t alg:8;
 183     };
 184     struct
 185     {
 186       u32 index_crypto;
 187       u32 index_integ;
 188       vnet_crypto_async_alg_t async_alg:8;
 189     };
 190   };
 191 #define VNET_CRYPTO_KEY_TYPE_DATA 0
 192 #define VNET_CRYPTO_KEY_TYPE_LINK 1
 193   u8 type;
 194 } vnet_crypto_key_t;
 195
 196 typedef enum
 197 {
 198   VNET_CRYPTO_OP_NONE = 0,
 199 #define _(n, s, l) VNET_CRYPTO_OP_##n##_ENC, VNET_CRYPTO_OP_##n##_DEC,
 200   foreach_crypto_cipher_alg
 201   foreach_crypto_aead_alg
 202 #undef _
 203 #define _(n, s) VNET_CRYPTO_OP_##n##_HMAC,
 204  foreach_crypto_hmac_alg
 205 #undef _
 206     VNET_CRYPTO_N_OP_IDS,
 207 } vnet_crypto_op_id_t;
 208 /* *INDENT-ON* */
 209
 210 typedef enum
 211 {
 212   CRYPTO_OP_SIMPLE,
 213   CRYPTO_OP_CHAINED,
 214   CRYPTO_OP_BOTH,
 215 } crypto_op_class_type_t;
 216
 217 typedef struct
 218 {
 219   char *name;
 220   vnet_crypto_op_id_t op_by_type[VNET_CRYPTO_OP_N_TYPES];
 221 } vnet_crypto_alg_data_t;
 222
 223 typedef struct
 224 {
 225   u8 *src;
 226   u8 *dst;
 227   u32 len;
 228 } vnet_crypto_op_chunk_t;
 229
 230 typedef struct
 231 {
 232   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
 233   uword user_data;
 234   vnet_crypto_op_id_t op:16;
 235   vnet_crypto_op_status_t status:8;
 236   u8 flags;
 237 #define VNET_CRYPTO_OP_FLAG_INIT_IV (1 << 0)
 238 #define VNET_CRYPTO_OP_FLAG_HMAC_CHECK (1 << 1)
 239 #define VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS (1 << 2)
 240
 241   union
 242   {
 243     u8 digest_len;
 244     u8 tag_len;
 245   };
 246   u16 aad_len;
 247
 248   union
 249   {
 250     struct
 251     {
 252       u8 *src;
 253       u8 *dst;
 254     };
 255
 256     /* valid if VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS is set */
 257     u16 n_chunks;
 258   };
 259
 260   union
 261   {
 262     u32 len;
 263     /* valid if VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS is set */
 264     u32 chunk_index;
 265   };
 266
 267   u32 key_index;
 268   u8 *iv;
 269   u8 *aad;
 270
 271   union
 272   {
 273     u8 *tag;
 274     u8 *digest;
 275   };
 276 } vnet_crypto_op_t;
 277
 278 STATIC_ASSERT_SIZEOF (vnet_crypto_op_t, CLIB_CACHE_LINE_BYTES);
 279
 280 typedef struct
 281 {
 282   vnet_crypto_op_type_t type;
 283   vnet_crypto_alg_t alg;
 284   u32 active_engine_index_simple;
 285   u32 active_engine_index_chained;
 286 } vnet_crypto_op_data_t;
 287
 288 typedef struct
 289 {
 290   vnet_crypto_async_op_type_t type;
 291   vnet_crypto_async_alg_t alg;
 292   u32 active_engine_index_async;
 293 } vnet_crypto_async_op_data_t;
 294
 295 typedef struct
 296 {
 297   char *name;
 298   vnet_crypto_async_op_id_t op_by_type[VNET_CRYPTO_ASYNC_OP_N_TYPES];
 299 } vnet_crypto_async_alg_data_t;
 300
 301 typedef struct
 302 {
 303   u8 *iv;
 304   union
 305   {
 306     u8 *digest;
 307     u8 *tag;
 308   };
 309   u8 *aad;
 310   u32 key_index;
 311   u32 crypto_total_length;
 312   i16 crypto_start_offset; /* first buffer offset */
 313   i16 integ_start_offset;
 314   /* adj total_length for integ, e.g.4 bytes for IPSec ESN */
 315   u16 integ_length_adj;
 316   vnet_crypto_op_status_t status : 8;
 317   u8 flags; /**< share same VNET_CRYPTO_OP_FLAG_* values */
 318 } vnet_crypto_async_frame_elt_t;
 319
 320 /* Assert the size so the compiler will warn us when it changes */
 321 STATIC_ASSERT_SIZEOF (vnet_crypto_async_frame_elt_t, 5 * sizeof (u64));
 322
 323 typedef enum vnet_crypto_async_frame_state_t_
 324 {
 325   VNET_CRYPTO_FRAME_STATE_NOT_PROCESSED,
 326   /* frame waiting to be processed */
 327   VNET_CRYPTO_FRAME_STATE_PENDING,
 328   VNET_CRYPTO_FRAME_STATE_WORK_IN_PROGRESS,
 329   VNET_CRYPTO_FRAME_STATE_SUCCESS,
 330   VNET_CRYPTO_FRAME_STATE_ELT_ERROR
 331 } __clib_packed vnet_crypto_async_frame_state_t;
 332
 333 typedef struct
 334 {
 335   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
 336   vnet_crypto_async_frame_state_t state;
 337   vnet_crypto_async_op_id_t op:8;
 338   u16 n_elts;
 339   vnet_crypto_async_frame_elt_t elts[VNET_CRYPTO_FRAME_SIZE];
 340   u32 buffer_indices[VNET_CRYPTO_FRAME_SIZE];
 341   u16 next_node_index[VNET_CRYPTO_FRAME_SIZE];
 342   u32 enqueue_thread_index;
 343 } vnet_crypto_async_frame_t;
 344
 345 typedef struct
 346 {
 347   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
 348   vnet_crypto_async_frame_t *frames[VNET_CRYPTO_ASYNC_OP_N_IDS];
 349   vnet_crypto_async_frame_t *frame_pool;
 350   u32 *buffer_indices;
 351   u16 *nexts;
 352 } vnet_crypto_thread_t;
 353
 354 typedef u32 vnet_crypto_key_index_t;
 355
 356 typedef u32 (vnet_crypto_chained_ops_handler_t) (vlib_main_t * vm,
 357                                                  vnet_crypto_op_t * ops[],
 358                                                  vnet_crypto_op_chunk_t *
 359                                                  chunks, u32 n_ops);
 360
 361 typedef u32 (vnet_crypto_ops_handler_t) (vlib_main_t * vm,
 362                                          vnet_crypto_op_t * ops[], u32 n_ops);
 363
 364 typedef void (vnet_crypto_key_handler_t) (vlib_main_t * vm,
 365                                           vnet_crypto_key_op_t kop,
 366                                           vnet_crypto_key_index_t idx);
 367
 368 /** async crypto function handlers **/
 369 typedef int
 370   (vnet_crypto_frame_enqueue_t) (vlib_main_t * vm,
 371                                  vnet_crypto_async_frame_t * frame);
 372 typedef vnet_crypto_async_frame_t *
 373   (vnet_crypto_frame_dequeue_t) (vlib_main_t * vm, u32 * nb_elts_processed,
 374                                  u32 * enqueue_thread_idx);
 375
 376 u32
 377 vnet_crypto_register_engine (vlib_main_t * vm, char *name, int prio,
 378                              char *desc);
 379
 380 void vnet_crypto_register_ops_handler (vlib_main_t * vm, u32 engine_index,
 381                                        vnet_crypto_op_id_t opt,
 382                                        vnet_crypto_ops_handler_t * oph);
 383
 384 void vnet_crypto_register_chained_ops_handler (vlib_main_t * vm,
 385                                                u32 engine_index,
 386                                                vnet_crypto_op_id_t opt,
 387                                                vnet_crypto_chained_ops_handler_t
 388                                                * oph);
 389
 390 void vnet_crypto_register_ops_handlers (vlib_main_t * vm, u32 engine_index,
 391                                         vnet_crypto_op_id_t opt,
 392                                         vnet_crypto_ops_handler_t * fn,
 393                                         vnet_crypto_chained_ops_handler_t *
 394                                         cfn);
 395
 396 void vnet_crypto_register_key_handler (vlib_main_t * vm, u32 engine_index,
 397                                        vnet_crypto_key_handler_t * keyh);
 398
 399 /** async crypto register functions */
 400 u32 vnet_crypto_register_post_node (vlib_main_t * vm, char *post_node_name);
 401 void vnet_crypto_register_async_handler (vlib_main_t * vm,
 402                                          u32 engine_index,
 403                                          vnet_crypto_async_op_id_t opt,
 404                                          vnet_crypto_frame_enqueue_t * enq_fn,
 405                                          vnet_crypto_frame_dequeue_t *
 406                                          deq_fn);
 407
 408 typedef struct
 409 {
 410   char *name;
 411   char *desc;
 412   int priority;
 413   vnet_crypto_key_handler_t *key_op_handler;
 414   vnet_crypto_ops_handler_t *ops_handlers[VNET_CRYPTO_N_OP_IDS];
 415     vnet_crypto_chained_ops_handler_t
 416     * chained_ops_handlers[VNET_CRYPTO_N_OP_IDS];
 417   vnet_crypto_frame_enqueue_t *enqueue_handlers[VNET_CRYPTO_ASYNC_OP_N_IDS];
 418   vnet_crypto_frame_dequeue_t *dequeue_handlers[VNET_CRYPTO_ASYNC_OP_N_IDS];
 419 } vnet_crypto_engine_t;
 420
 421 typedef struct
 422 {
 423   u32 node_idx;
 424   u32 next_idx;
 425 } vnet_crypto_async_next_node_t;
 426
 427 typedef struct
 428 {
 429   vnet_crypto_alg_data_t *algs;
 430   vnet_crypto_thread_t *threads;
 431   vnet_crypto_ops_handler_t **ops_handlers;
 432   vnet_crypto_chained_ops_handler_t **chained_ops_handlers;
 433   vnet_crypto_frame_enqueue_t **enqueue_handlers;
 434   vnet_crypto_frame_dequeue_t **dequeue_handlers;
 435   clib_bitmap_t *async_active_ids;
 436   vnet_crypto_op_data_t opt_data[VNET_CRYPTO_N_OP_IDS];
 437   vnet_crypto_async_op_data_t async_opt_data[VNET_CRYPTO_ASYNC_OP_N_IDS];
 438   vnet_crypto_engine_t *engines;
 439   vnet_crypto_key_t *keys;
 440   uword *engine_index_by_name;
 441   uword *alg_index_by_name;
 442   uword *async_alg_index_by_name;
 443   vnet_crypto_async_alg_data_t *async_algs;
 444   u32 async_refcnt;
 445   vnet_crypto_async_next_node_t *next_nodes;
 446   u32 crypto_node_index;
 447 #define VNET_CRYPTO_ASYNC_DISPATCH_POLLING 0
 448 #define VNET_CRYPTO_ASYNC_DISPATCH_INTERRUPT 1
 449   u8 dispatch_mode;
 450 } vnet_crypto_main_t;
 451
 452 extern vnet_crypto_main_t crypto_main;
 453
 454 u32 vnet_crypto_process_chained_ops (vlib_main_t * vm, vnet_crypto_op_t ops[],
 455                                      vnet_crypto_op_chunk_t * chunks,
 456                                      u32 n_ops);
 457 u32 vnet_crypto_process_ops (vlib_main_t * vm, vnet_crypto_op_t ops[],
 458                              u32 n_ops);
 459
 460
 461 int vnet_crypto_set_handler2 (char *ops_handler_name, char *engine,
 462                               crypto_op_class_type_t oct);
 463 int vnet_crypto_is_set_handler (vnet_crypto_alg_t alg);
 464
 465 u32 vnet_crypto_key_add (vlib_main_t * vm, vnet_crypto_alg_t alg,
 466                          u8 * data, u16 length);
 467 void vnet_crypto_key_del (vlib_main_t * vm, vnet_crypto_key_index_t index);
 468
 469 /**
 470  * Use 2 created keys to generate new key for linked algs (cipher + integ)
 471  * The returned key index is to be used for linked alg only.
 472  **/
 473 u32 vnet_crypto_key_add_linked (vlib_main_t * vm,
 474                                 vnet_crypto_key_index_t index_crypto,
 475                                 vnet_crypto_key_index_t index_integ);
 476
 477 clib_error_t *crypto_dispatch_enable_disable (int is_enable);
 478
 479 int vnet_crypto_set_async_handler2 (char *alg_name, char *engine);
 480
 481 int vnet_crypto_is_set_async_handler (vnet_crypto_async_op_id_t opt);
 482
 483 void vnet_crypto_request_async_mode (int is_enable);
 484
 485 void vnet_crypto_set_async_dispatch_mode (u8 mode);
 486
 487 vnet_crypto_async_alg_t vnet_crypto_link_algs (vnet_crypto_alg_t crypto_alg,
 488                                                vnet_crypto_alg_t integ_alg);
 489
 490 clib_error_t *crypto_dispatch_enable_disable (int is_enable);
 491
 492 format_function_t format_vnet_crypto_alg;
 493 format_function_t format_vnet_crypto_engine;
 494 format_function_t format_vnet_crypto_op;
 495 format_function_t format_vnet_crypto_op_type;
 496 format_function_t format_vnet_crypto_op_status;
 497 unformat_function_t unformat_vnet_crypto_alg;
 498
 499 format_function_t format_vnet_crypto_async_op;
 500 format_function_t format_vnet_crypto_async_alg;
 501 format_function_t format_vnet_crypto_async_op_type;
 502
 503 static_always_inline void
 504 vnet_crypto_op_init (vnet_crypto_op_t * op, vnet_crypto_op_id_t type)
 505 {
 506   if (CLIB_DEBUG > 0)
 507     clib_memset (op, 0xfe, sizeof (*op));
 508   op->op = type;
 509   op->flags = 0;
 510   op->key_index = ~0;
 511   op->n_chunks = 0;
 512 }
 513
 514 static_always_inline vnet_crypto_op_type_t
 515 vnet_crypto_get_op_type (vnet_crypto_op_id_t id)
 516 {
 517   vnet_crypto_main_t *cm = &crypto_main;
 518   ASSERT (id < VNET_CRYPTO_N_OP_IDS);
 519   vnet_crypto_op_data_t *od = cm->opt_data + id;
 520   return od->type;
 521 }
 522
 523 static_always_inline vnet_crypto_key_t *
 524 vnet_crypto_get_key (vnet_crypto_key_index_t index)
 525 {
 526   vnet_crypto_main_t *cm = &crypto_main;
 527   return vec_elt_at_index (cm->keys, index);
 528 }
 529
 530 static_always_inline int
 531 vnet_crypto_set_handler (char *alg_name, char *engine)
 532 {
 533   return vnet_crypto_set_handler2 (alg_name, engine, CRYPTO_OP_BOTH);
 534 }
 535
 536 /** async crypto inline functions **/
 537
 538 static_always_inline vnet_crypto_async_frame_t *
 539 vnet_crypto_async_get_frame (vlib_main_t * vm, vnet_crypto_async_op_id_t opt)
 540 {
 541   vnet_crypto_main_t *cm = &crypto_main;
 542   vnet_crypto_thread_t *ct = cm->threads + vm->thread_index;
 543   vnet_crypto_async_frame_t *f = ct->frames[opt];
 544
 545   if (!f)
 546     {
 547       pool_get_aligned (ct->frame_pool, f, CLIB_CACHE_LINE_BYTES);
 548       if (CLIB_DEBUG > 0)
 549         clib_memset (f, 0xfe, sizeof (*f));
 550       f->state = VNET_CRYPTO_FRAME_STATE_NOT_PROCESSED;
 551       f->op = opt;
 552       f->n_elts = 0;
 553       ct->frames[opt] = f;
 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_thread_t *ct = cm->threads + vm->thread_index;
 574   vnet_crypto_async_op_id_t opt = frame->op;
 575   u32 i = vlib_num_workers () > 0;
 576
 577   frame->state = VNET_CRYPTO_FRAME_STATE_PENDING;
 578   frame->enqueue_thread_index = vm->thread_index;
 579
 580   int ret = (cm->enqueue_handlers[frame->op]) (vm, frame);
 581
 582   clib_bitmap_set_no_check (cm->async_active_ids, opt, 1);
 583   if (PREDICT_TRUE (ret == 0))
 584     {
 585       vnet_crypto_async_frame_t *nf = 0;
 586       pool_get_aligned (ct->frame_pool, nf, CLIB_CACHE_LINE_BYTES);
 587       if (CLIB_DEBUG > 0)
 588         clib_memset (nf, 0xfe, sizeof (*nf));
 589       nf->state = VNET_CRYPTO_FRAME_STATE_NOT_PROCESSED;
 590       nf->op = opt;
 591       nf->n_elts = 0;
 592       ct->frames[opt] = nf;
 593     }
 594   else
 595     {
 596       frame->state = VNET_CRYPTO_FRAME_STATE_ELT_ERROR;
 597     }
 598
 599   if (cm->dispatch_mode == VNET_CRYPTO_ASYNC_DISPATCH_INTERRUPT)
 600     {
 601       for (; i < tm->n_vlib_mains; i++)
 602         {
 603           vlib_node_set_interrupt_pending (vlib_mains[i],
 604                                            cm->crypto_node_index);
 605         }
 606     }
 607   return ret;
 608 }
 609
 610 static_always_inline int
 611 vnet_crypto_async_add_to_frame (vlib_main_t * vm,
 612                                 vnet_crypto_async_frame_t ** frame,
 613                                 u32 key_index,
 614                                 u32 crypto_len, i16 integ_len_adj,
 615                                 i16 crypto_start_offset,
 616                                 u16 integ_start_offset,
 617                                 u32 buffer_index,
 618                                 u16 next_node,
 619                                 u8 * iv, u8 * tag, u8 * aad, u8 flags)
 620 {
 621   vnet_crypto_async_frame_t *f = *frame;
 622   vnet_crypto_async_frame_elt_t *fe;
 623   u16 index;
 624
 625   if (PREDICT_FALSE (f->n_elts == VNET_CRYPTO_FRAME_SIZE))
 626     {
 627       vnet_crypto_async_op_id_t opt = f->op;
 628       int ret;
 629       ret = vnet_crypto_async_submit_open_frame (vm, f);
 630       if (PREDICT_FALSE (ret < 0))
 631         return -1;
 632       f = vnet_crypto_async_get_frame (vm, opt);
 633       *frame = f;
 634     }
 635
 636   index = f->n_elts;
 637   fe = &f->elts[index];
 638   f->n_elts++;
 639   fe->key_index = key_index;
 640   fe->crypto_total_length = crypto_len;
 641   fe->crypto_start_offset = crypto_start_offset;
 642   fe->integ_start_offset = integ_start_offset;
 643   fe->integ_length_adj = integ_len_adj;
 644   fe->iv = iv;
 645   fe->tag = tag;
 646   fe->aad = aad;
 647   fe->flags = flags;
 648   f->buffer_indices[index] = buffer_index;
 649   f->next_node_index[index] = next_node;
 650
 651   return 0;
 652 }
 653
 654 static_always_inline void
 655 vnet_crypto_async_reset_frame (vnet_crypto_async_frame_t * f)
 656 {
 657   vnet_crypto_async_op_id_t opt;
 658   ASSERT (f != 0);
 659   ASSERT ((f->state == VNET_CRYPTO_FRAME_STATE_NOT_PROCESSED
 660            || f->state == VNET_CRYPTO_FRAME_STATE_ELT_ERROR));
 661   opt = f->op;
 662   if (CLIB_DEBUG > 0)
 663     clib_memset (f, 0xfe, sizeof (*f));
 664   f->state = VNET_CRYPTO_FRAME_STATE_NOT_PROCESSED;
 665   f->op = opt;
 666   f->n_elts = 0;
 667 }
 668
 669 #endif /* included_vnet_crypto_crypto_h */
 670
 671 /*
 672  * fd.io coding-style-patch-verification: ON
 673  *
 674  * Local Variables:
 675  * eval: (c-set-style "gnu")
 676  * End:
 677  */