virtio_crypto.h (16522B) - Raw
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