include/uapi/linux/virtio_crypto.h

   1 #ifndef _VIRTIO_CRYPTO_H
   2 #define _VIRTIO_CRYPTO_H
   3 /* This header is BSD licensed so anyone can use the definitions to implement
   4  * compatible drivers/servers.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. Neither the name of IBM nor the names of its contributors
  15  *    may be used to endorse or promote products derived from this software
  16  *    without specific prior written permission.
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  18  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  19  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  20  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL IBM OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  24  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  25  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  26  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  27  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28  * SUCH DAMAGE.
  29  */
  30 #include <linux/types.h>
  31 #include <linux/virtio_types.h>
  32 #include <linux/virtio_ids.h>
  33 #include <linux/virtio_config.h>
  34
  35
  36 #define VIRTIO_CRYPTO_SERVICE_CIPHER 0
  37 #define VIRTIO_CRYPTO_SERVICE_HASH   1
  38 #define VIRTIO_CRYPTO_SERVICE_MAC    2
  39 #define VIRTIO_CRYPTO_SERVICE_AEAD   3
  40 #define VIRTIO_CRYPTO_SERVICE_AKCIPHER 4
  41
  42 #define VIRTIO_CRYPTO_OPCODE(service, op)   (((service) << 8) | (op))
  43
  44 struct virtio_crypto_ctrl_header {
  45 #define VIRTIO_CRYPTO_CIPHER_CREATE_SESSION \
  46            VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_CIPHER, 0x02)
  47 #define VIRTIO_CRYPTO_CIPHER_DESTROY_SESSION \
  48            VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_CIPHER, 0x03)
  49 #define VIRTIO_CRYPTO_HASH_CREATE_SESSION \
  50            VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_HASH, 0x02)
  51 #define VIRTIO_CRYPTO_HASH_DESTROY_SESSION \
  52            VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_HASH, 0x03)
  53 #define VIRTIO_CRYPTO_MAC_CREATE_SESSION \
  54            VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_MAC, 0x02)
  55 #define VIRTIO_CRYPTO_MAC_DESTROY_SESSION \
  56            VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_MAC, 0x03)
  57 #define VIRTIO_CRYPTO_AEAD_CREATE_SESSION \
  58            VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AEAD, 0x02)
  59 #define VIRTIO_CRYPTO_AEAD_DESTROY_SESSION \
  60            VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AEAD, 0x03)
  61 #define VIRTIO_CRYPTO_AKCIPHER_CREATE_SESSION \
  62            VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x04)
  63 #define VIRTIO_CRYPTO_AKCIPHER_DESTROY_SESSION \
  64            VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x05)
  65         __le32 opcode;
  66         __le32 algo;
  67         __le32 flag;
  68         /* data virtqueue id */
  69         __le32 queue_id;
  70 };
  71
  72 struct virtio_crypto_cipher_session_para {
  73 #define VIRTIO_CRYPTO_NO_CIPHER                 0
  74 #define VIRTIO_CRYPTO_CIPHER_ARC4               1
  75 #define VIRTIO_CRYPTO_CIPHER_AES_ECB            2
  76 #define VIRTIO_CRYPTO_CIPHER_AES_CBC            3
  77 #define VIRTIO_CRYPTO_CIPHER_AES_CTR            4
  78 #define VIRTIO_CRYPTO_CIPHER_DES_ECB            5
  79 #define VIRTIO_CRYPTO_CIPHER_DES_CBC            6
  80 #define VIRTIO_CRYPTO_CIPHER_3DES_ECB           7
  81 #define VIRTIO_CRYPTO_CIPHER_3DES_CBC           8
  82 #define VIRTIO_CRYPTO_CIPHER_3DES_CTR           9
  83 #define VIRTIO_CRYPTO_CIPHER_KASUMI_F8          10
  84 #define VIRTIO_CRYPTO_CIPHER_SNOW3G_UEA2        11
  85 #define VIRTIO_CRYPTO_CIPHER_AES_F8             12
  86 #define VIRTIO_CRYPTO_CIPHER_AES_XTS            13
  87 #define VIRTIO_CRYPTO_CIPHER_ZUC_EEA3           14
  88         __le32 algo;
  89         /* length of key */
  90         __le32 keylen;
  91
  92 #define VIRTIO_CRYPTO_OP_ENCRYPT  1
  93 #define VIRTIO_CRYPTO_OP_DECRYPT  2
  94         /* encrypt or decrypt */
  95         __le32 op;
  96         __le32 padding;
  97 };
  98
  99 struct virtio_crypto_session_input {
 100         /* Device-writable part */
 101         __le64 session_id;
 102         __le32 status;
 103         __le32 padding;
 104 };
 105
 106 struct virtio_crypto_cipher_session_req {
 107         struct virtio_crypto_cipher_session_para para;
 108         __u8 padding[32];
 109 };
 110
 111 struct virtio_crypto_hash_session_para {
 112 #define VIRTIO_CRYPTO_NO_HASH            0
 113 #define VIRTIO_CRYPTO_HASH_MD5           1
 114 #define VIRTIO_CRYPTO_HASH_SHA1          2
 115 #define VIRTIO_CRYPTO_HASH_SHA_224       3
 116 #define VIRTIO_CRYPTO_HASH_SHA_256       4
 117 #define VIRTIO_CRYPTO_HASH_SHA_384       5
 118 #define VIRTIO_CRYPTO_HASH_SHA_512       6
 119 #define VIRTIO_CRYPTO_HASH_SHA3_224      7
 120 #define VIRTIO_CRYPTO_HASH_SHA3_256      8
 121 #define VIRTIO_CRYPTO_HASH_SHA3_384      9
 122 #define VIRTIO_CRYPTO_HASH_SHA3_512      10
 123 #define VIRTIO_CRYPTO_HASH_SHA3_SHAKE128      11
 124 #define VIRTIO_CRYPTO_HASH_SHA3_SHAKE256      12
 125         __le32 algo;
 126         /* hash result length */
 127         __le32 hash_result_len;
 128         __u8 padding[8];
 129 };
 130
 131 struct virtio_crypto_hash_create_session_req {
 132         struct virtio_crypto_hash_session_para para;
 133         __u8 padding[40];
 134 };
 135
 136 struct virtio_crypto_mac_session_para {
 137 #define VIRTIO_CRYPTO_NO_MAC                       0
 138 #define VIRTIO_CRYPTO_MAC_HMAC_MD5                 1
 139 #define VIRTIO_CRYPTO_MAC_HMAC_SHA1                2
 140 #define VIRTIO_CRYPTO_MAC_HMAC_SHA_224             3
 141 #define VIRTIO_CRYPTO_MAC_HMAC_SHA_256             4
 142 #define VIRTIO_CRYPTO_MAC_HMAC_SHA_384             5
 143 #define VIRTIO_CRYPTO_MAC_HMAC_SHA_512             6
 144 #define VIRTIO_CRYPTO_MAC_CMAC_3DES                25
 145 #define VIRTIO_CRYPTO_MAC_CMAC_AES                 26
 146 #define VIRTIO_CRYPTO_MAC_KASUMI_F9                27
 147 #define VIRTIO_CRYPTO_MAC_SNOW3G_UIA2              28
 148 #define VIRTIO_CRYPTO_MAC_GMAC_AES                 41
 149 #define VIRTIO_CRYPTO_MAC_GMAC_TWOFISH             42
 150 #define VIRTIO_CRYPTO_MAC_CBCMAC_AES               49
 151 #define VIRTIO_CRYPTO_MAC_CBCMAC_KASUMI_F9         50
 152 #define VIRTIO_CRYPTO_MAC_XCBC_AES                 53
 153         __le32 algo;
 154         /* hash result length */
 155         __le32 hash_result_len;
 156         /* length of authenticated key */
 157         __le32 auth_key_len;
 158         __le32 padding;
 159 };
 160
 161 struct virtio_crypto_mac_create_session_req {
 162         struct virtio_crypto_mac_session_para para;
 163         __u8 padding[40];
 164 };
 165
 166 struct virtio_crypto_aead_session_para {
 167 #define VIRTIO_CRYPTO_NO_AEAD     0
 168 #define VIRTIO_CRYPTO_AEAD_GCM    1
 169 #define VIRTIO_CRYPTO_AEAD_CCM    2
 170 #define VIRTIO_CRYPTO_AEAD_CHACHA20_POLY1305  3
 171         __le32 algo;
 172         /* length of key */
 173         __le32 key_len;
 174         /* hash result length */
 175         __le32 hash_result_len;
 176         /* length of the additional authenticated data (AAD) in bytes */
 177         __le32 aad_len;
 178         /* encrypt or decrypt, See above VIRTIO_CRYPTO_OP_* */
 179         __le32 op;
 180         __le32 padding;
 181 };
 182
 183 struct virtio_crypto_aead_create_session_req {
 184         struct virtio_crypto_aead_session_para para;
 185         __u8 padding[32];
 186 };
 187
 188 struct virtio_crypto_rsa_session_para {
 189 #define VIRTIO_CRYPTO_RSA_RAW_PADDING   0
 190 #define VIRTIO_CRYPTO_RSA_PKCS1_PADDING 1
 191         __le32 padding_algo;
 192
 193 #define VIRTIO_CRYPTO_RSA_NO_HASH   0
 194 #define VIRTIO_CRYPTO_RSA_MD2       1
 195 #define VIRTIO_CRYPTO_RSA_MD3       2
 196 #define VIRTIO_CRYPTO_RSA_MD4       3
 197 #define VIRTIO_CRYPTO_RSA_MD5       4
 198 #define VIRTIO_CRYPTO_RSA_SHA1      5
 199 #define VIRTIO_CRYPTO_RSA_SHA256    6
 200 #define VIRTIO_CRYPTO_RSA_SHA384    7
 201 #define VIRTIO_CRYPTO_RSA_SHA512    8
 202 #define VIRTIO_CRYPTO_RSA_SHA224    9
 203         __le32 hash_algo;
 204 };
 205
 206 struct virtio_crypto_ecdsa_session_para {
 207 #define VIRTIO_CRYPTO_CURVE_UNKNOWN   0
 208 #define VIRTIO_CRYPTO_CURVE_NIST_P192 1
 209 #define VIRTIO_CRYPTO_CURVE_NIST_P224 2
 210 #define VIRTIO_CRYPTO_CURVE_NIST_P256 3
 211 #define VIRTIO_CRYPTO_CURVE_NIST_P384 4
 212 #define VIRTIO_CRYPTO_CURVE_NIST_P521 5
 213         __le32 curve_id;
 214         __le32 padding;
 215 };
 216
 217 struct virtio_crypto_akcipher_session_para {
 218 #define VIRTIO_CRYPTO_NO_AKCIPHER    0
 219 #define VIRTIO_CRYPTO_AKCIPHER_RSA   1
 220 #define VIRTIO_CRYPTO_AKCIPHER_DSA   2
 221 #define VIRTIO_CRYPTO_AKCIPHER_ECDSA 3
 222         __le32 algo;
 223
 224 #define VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PUBLIC  1
 225 #define VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PRIVATE 2
 226         __le32 keytype;
 227         __le32 keylen;
 228
 229         union {
 230                 struct virtio_crypto_rsa_session_para rsa;
 231                 struct virtio_crypto_ecdsa_session_para ecdsa;
 232         } u;
 233 };
 234
 235 struct virtio_crypto_akcipher_create_session_req {
 236         struct virtio_crypto_akcipher_session_para para;
 237         __u8 padding[36];
 238 };
 239
 240 struct virtio_crypto_alg_chain_session_para {
 241 #define VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_HASH_THEN_CIPHER  1
 242 #define VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_CIPHER_THEN_HASH  2
 243         __le32 alg_chain_order;
 244 /* Plain hash */
 245 #define VIRTIO_CRYPTO_SYM_HASH_MODE_PLAIN    1
 246 /* Authenticated hash (mac) */
 247 #define VIRTIO_CRYPTO_SYM_HASH_MODE_AUTH     2
 248 /* Nested hash */
 249 #define VIRTIO_CRYPTO_SYM_HASH_MODE_NESTED   3
 250         __le32 hash_mode;
 251         struct virtio_crypto_cipher_session_para cipher_param;
 252         union {
 253                 struct virtio_crypto_hash_session_para hash_param;
 254                 struct virtio_crypto_mac_session_para mac_param;
 255                 __u8 padding[16];
 256         } u;
 257         /* length of the additional authenticated data (AAD) in bytes */
 258         __le32 aad_len;
 259         __le32 padding;
 260 };
 261
 262 struct virtio_crypto_alg_chain_session_req {
 263         struct virtio_crypto_alg_chain_session_para para;
 264 };
 265
 266 struct virtio_crypto_sym_create_session_req {
 267         union {
 268                 struct virtio_crypto_cipher_session_req cipher;
 269                 struct virtio_crypto_alg_chain_session_req chain;
 270                 __u8 padding[48];
 271         } u;
 272
 273         /* Device-readable part */
 274
 275 /* No operation */
 276 #define VIRTIO_CRYPTO_SYM_OP_NONE  0
 277 /* Cipher only operation on the data */
 278 #define VIRTIO_CRYPTO_SYM_OP_CIPHER  1
 279 /*
 280  * Chain any cipher with any hash or mac operation. The order
 281  * depends on the value of alg_chain_order param
 282  */
 283 #define VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING  2
 284         __le32 op_type;
 285         __le32 padding;
 286 };
 287
 288 struct virtio_crypto_destroy_session_req {
 289         /* Device-readable part */
 290         __le64  session_id;
 291         __u8 padding[48];
 292 };
 293
 294 /* The request of the control virtqueue's packet */
 295 struct virtio_crypto_op_ctrl_req {
 296         struct virtio_crypto_ctrl_header header;
 297
 298         union {
 299                 struct virtio_crypto_sym_create_session_req
 300                         sym_create_session;
 301                 struct virtio_crypto_hash_create_session_req
 302                         hash_create_session;
 303                 struct virtio_crypto_mac_create_session_req
 304                         mac_create_session;
 305                 struct virtio_crypto_aead_create_session_req
 306                         aead_create_session;
 307                 struct virtio_crypto_akcipher_create_session_req
 308                         akcipher_create_session;
 309                 struct virtio_crypto_destroy_session_req
 310                         destroy_session;
 311                 __u8 padding[56];
 312         } u;
 313 };
 314
 315 struct virtio_crypto_op_header {
 316 #define VIRTIO_CRYPTO_CIPHER_ENCRYPT \
 317         VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_CIPHER, 0x00)
 318 #define VIRTIO_CRYPTO_CIPHER_DECRYPT \
 319         VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_CIPHER, 0x01)
 320 #define VIRTIO_CRYPTO_HASH \
 321         VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_HASH, 0x00)
 322 #define VIRTIO_CRYPTO_MAC \
 323         VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_MAC, 0x00)
 324 #define VIRTIO_CRYPTO_AEAD_ENCRYPT \
 325         VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AEAD, 0x00)
 326 #define VIRTIO_CRYPTO_AEAD_DECRYPT \
 327         VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AEAD, 0x01)
 328 #define VIRTIO_CRYPTO_AKCIPHER_ENCRYPT \
 329         VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x00)
 330 #define VIRTIO_CRYPTO_AKCIPHER_DECRYPT \
 331         VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x01)
 332         /* akcipher sign/verify opcodes are deprecated */
 333 #define VIRTIO_CRYPTO_AKCIPHER_SIGN \
 334         VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x02)
 335 #define VIRTIO_CRYPTO_AKCIPHER_VERIFY \
 336         VIRTIO_CRYPTO_OPCODE(VIRTIO_CRYPTO_SERVICE_AKCIPHER, 0x03)
 337         __le32 opcode;
 338         /* algo should be service-specific algorithms */
 339         __le32 algo;
 340         /* session_id should be service-specific algorithms */
 341         __le64 session_id;
 342         /* control flag to control the request */
 343         __le32 flag;
 344         __le32 padding;
 345 };
 346
 347 struct virtio_crypto_cipher_para {
 348         /*
 349          * Byte Length of valid IV/Counter
 350          *
 351          * For block ciphers in CBC or F8 mode, or for Kasumi in F8 mode, or for
 352          *   SNOW3G in UEA2 mode, this is the length of the IV (which
 353          *   must be the same as the block length of the cipher).
 354          * For block ciphers in CTR mode, this is the length of the counter
 355          *   (which must be the same as the block length of the cipher).
 356          * For AES-XTS, this is the 128bit tweak, i, from IEEE Std 1619-2007.
 357          *
 358          * The IV/Counter will be updated after every partial cryptographic
 359          * operation.
 360          */
 361         __le32 iv_len;
 362         /* length of source data */
 363         __le32 src_data_len;
 364         /* length of dst data */
 365         __le32 dst_data_len;
 366         __le32 padding;
 367 };
 368
 369 struct virtio_crypto_hash_para {
 370         /* length of source data */
 371         __le32 src_data_len;
 372         /* hash result length */
 373         __le32 hash_result_len;
 374 };
 375
 376 struct virtio_crypto_mac_para {
 377         struct virtio_crypto_hash_para hash;
 378 };
 379
 380 struct virtio_crypto_aead_para {
 381         /*
 382          * Byte Length of valid IV data pointed to by the below iv_addr
 383          * parameter.
 384          *
 385          * For GCM mode, this is either 12 (for 96-bit IVs) or 16, in which
 386          *   case iv_addr points to J0.
 387          * For CCM mode, this is the length of the nonce, which can be in the
 388          *   range 7 to 13 inclusive.
 389          */
 390         __le32 iv_len;
 391         /* length of additional auth data */
 392         __le32 aad_len;
 393         /* length of source data */
 394         __le32 src_data_len;
 395         /* length of dst data */
 396         __le32 dst_data_len;
 397 };
 398
 399 struct virtio_crypto_cipher_data_req {
 400         /* Device-readable part */
 401         struct virtio_crypto_cipher_para para;
 402         __u8 padding[24];
 403 };
 404
 405 struct virtio_crypto_hash_data_req {
 406         /* Device-readable part */
 407         struct virtio_crypto_hash_para para;
 408         __u8 padding[40];
 409 };
 410
 411 struct virtio_crypto_mac_data_req {
 412         /* Device-readable part */
 413         struct virtio_crypto_mac_para para;
 414         __u8 padding[40];
 415 };
 416
 417 struct virtio_crypto_alg_chain_data_para {
 418         __le32 iv_len;
 419         /* Length of source data */
 420         __le32 src_data_len;
 421         /* Length of destination data */
 422         __le32 dst_data_len;
 423         /* Starting point for cipher processing in source data */
 424         __le32 cipher_start_src_offset;
 425         /* Length of the source data that the cipher will be computed on */
 426         __le32 len_to_cipher;
 427         /* Starting point for hash processing in source data */
 428         __le32 hash_start_src_offset;
 429         /* Length of the source data that the hash will be computed on */
 430         __le32 len_to_hash;
 431         /* Length of the additional auth data */
 432         __le32 aad_len;
 433         /* Length of the hash result */
 434         __le32 hash_result_len;
 435         __le32 reserved;
 436 };
 437
 438 struct virtio_crypto_alg_chain_data_req {
 439         /* Device-readable part */
 440         struct virtio_crypto_alg_chain_data_para para;
 441 };
 442
 443 struct virtio_crypto_sym_data_req {
 444         union {
 445                 struct virtio_crypto_cipher_data_req cipher;
 446                 struct virtio_crypto_alg_chain_data_req chain;
 447                 __u8 padding[40];
 448         } u;
 449
 450         /* See above VIRTIO_CRYPTO_SYM_OP_* */
 451         __le32 op_type;
 452         __le32 padding;
 453 };
 454
 455 struct virtio_crypto_aead_data_req {
 456         /* Device-readable part */
 457         struct virtio_crypto_aead_para para;
 458         __u8 padding[32];
 459 };
 460
 461 struct virtio_crypto_akcipher_para {
 462         __le32 src_data_len;
 463         __le32 dst_data_len;
 464 };
 465
 466 struct virtio_crypto_akcipher_data_req {
 467         struct virtio_crypto_akcipher_para para;
 468         __u8 padding[40];
 469 };
 470
 471 /* The request of the data virtqueue's packet */
 472 struct virtio_crypto_op_data_req {
 473         struct virtio_crypto_op_header header;
 474
 475         union {
 476                 struct virtio_crypto_sym_data_req  sym_req;
 477                 struct virtio_crypto_hash_data_req hash_req;
 478                 struct virtio_crypto_mac_data_req mac_req;
 479                 struct virtio_crypto_aead_data_req aead_req;
 480                 struct virtio_crypto_akcipher_data_req akcipher_req;
 481                 __u8 padding[48];
 482         } u;
 483 };
 484
 485 #define VIRTIO_CRYPTO_OK        0
 486 #define VIRTIO_CRYPTO_ERR       1
 487 #define VIRTIO_CRYPTO_BADMSG    2
 488 #define VIRTIO_CRYPTO_NOTSUPP   3
 489 #define VIRTIO_CRYPTO_INVSESS   4 /* Invalid session id */
 490 #define VIRTIO_CRYPTO_NOSPC     5 /* no free session ID */
 491 #define VIRTIO_CRYPTO_KEY_REJECTED 6 /* Signature verification failed */
 492
 493 /* The accelerator hardware is ready */
 494 #define VIRTIO_CRYPTO_S_HW_READY  (1 << 0)
 495
 496 struct virtio_crypto_config {
 497         /* See VIRTIO_CRYPTO_OP_* above */
 498         __le32  status;
 499
 500         /*
 501          * Maximum number of data queue
 502          */
 503         __le32  max_dataqueues;
 504
 505         /*
 506          * Specifies the services mask which the device support,
 507          * see VIRTIO_CRYPTO_SERVICE_* above
 508          */
 509         __le32 crypto_services;
 510
 511         /* Detailed algorithms mask */
 512         __le32 cipher_algo_l;
 513         __le32 cipher_algo_h;
 514         __le32 hash_algo;
 515         __le32 mac_algo_l;
 516         __le32 mac_algo_h;
 517         __le32 aead_algo;
 518         /* Maximum length of cipher key */
 519         __le32 max_cipher_key_len;
 520         /* Maximum length of authenticated key */
 521         __le32 max_auth_key_len;
 522         __le32 akcipher_algo;
 523         /* Maximum size of each crypto request's content */
 524         __le64 max_size;
 525 };
 526
 527 struct virtio_crypto_inhdr {
 528         /* See VIRTIO_CRYPTO_* above */
 529         __u8 status;
 530 };
 531 #endif