Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 1 | /* |
| 2 | * QEMU Cryptodev backend for QEMU cipher APIs |
| 3 | * |
| 4 | * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD. |
| 5 | * |
| 6 | * Authors: |
| 7 | * Gonglei <arei.gonglei@huawei.com> |
| 8 | * |
| 9 | * This library is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU Lesser General Public |
| 11 | * License as published by the Free Software Foundation; either |
Chetan Pant | 0dda001 | 2020-10-14 13:37:22 +0000 | [diff] [blame] | 12 | * version 2.1 of the License, or (at your option) any later version. |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 13 | * |
| 14 | * This library is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | * Lesser General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU Lesser General Public |
| 20 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include "qemu/osdep.h" |
| 25 | #include "sysemu/cryptodev.h" |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 26 | #include "qapi/error.h" |
| 27 | #include "standard-headers/linux/virtio_crypto.h" |
| 28 | #include "crypto/cipher.h" |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 29 | #include "crypto/akcipher.h" |
Eduardo Habkost | db1015e | 2020-09-03 16:43:22 -0400 | [diff] [blame] | 30 | #include "qom/object.h" |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 31 | |
| 32 | |
| 33 | /** |
| 34 | * @TYPE_CRYPTODEV_BACKEND_BUILTIN: |
| 35 | * name of backend that uses QEMU cipher API |
| 36 | */ |
| 37 | #define TYPE_CRYPTODEV_BACKEND_BUILTIN "cryptodev-backend-builtin" |
| 38 | |
Eduardo Habkost | 8063396 | 2020-09-16 14:25:19 -0400 | [diff] [blame] | 39 | OBJECT_DECLARE_SIMPLE_TYPE(CryptoDevBackendBuiltin, CRYPTODEV_BACKEND_BUILTIN) |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 40 | |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 41 | |
| 42 | typedef struct CryptoDevBackendBuiltinSession { |
| 43 | QCryptoCipher *cipher; |
| 44 | uint8_t direction; /* encryption or decryption */ |
| 45 | uint8_t type; /* cipher? hash? aead? */ |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 46 | QCryptoAkCipher *akcipher; |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 47 | QTAILQ_ENTRY(CryptoDevBackendBuiltinSession) next; |
| 48 | } CryptoDevBackendBuiltinSession; |
| 49 | |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 50 | /* Max number of symmetric/asymmetric sessions */ |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 51 | #define MAX_NUM_SESSIONS 256 |
| 52 | |
| 53 | #define CRYPTODEV_BUITLIN_MAX_AUTH_KEY_LEN 512 |
| 54 | #define CRYPTODEV_BUITLIN_MAX_CIPHER_KEY_LEN 64 |
| 55 | |
| 56 | struct CryptoDevBackendBuiltin { |
| 57 | CryptoDevBackend parent_obj; |
| 58 | |
| 59 | CryptoDevBackendBuiltinSession *sessions[MAX_NUM_SESSIONS]; |
| 60 | }; |
| 61 | |
| 62 | static void cryptodev_builtin_init( |
| 63 | CryptoDevBackend *backend, Error **errp) |
| 64 | { |
| 65 | /* Only support one queue */ |
| 66 | int queues = backend->conf.peers.queues; |
| 67 | CryptoDevBackendClient *cc; |
| 68 | |
| 69 | if (queues != 1) { |
| 70 | error_setg(errp, |
| 71 | "Only support one queue in cryptdov-builtin backend"); |
| 72 | return; |
| 73 | } |
| 74 | |
| 75 | cc = cryptodev_backend_new_client( |
| 76 | "cryptodev-builtin", NULL); |
| 77 | cc->info_str = g_strdup_printf("cryptodev-builtin0"); |
| 78 | cc->queue_index = 0; |
Gonglei | 5da73da | 2018-03-01 21:46:29 +0800 | [diff] [blame] | 79 | cc->type = CRYPTODEV_BACKEND_TYPE_BUILTIN; |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 80 | backend->conf.peers.ccs[0] = cc; |
| 81 | |
| 82 | backend->conf.crypto_services = |
| 83 | 1u << VIRTIO_CRYPTO_SERVICE_CIPHER | |
| 84 | 1u << VIRTIO_CRYPTO_SERVICE_HASH | |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 85 | 1u << VIRTIO_CRYPTO_SERVICE_MAC | |
| 86 | 1u << VIRTIO_CRYPTO_SERVICE_AKCIPHER; |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 87 | backend->conf.cipher_algo_l = 1u << VIRTIO_CRYPTO_CIPHER_AES_CBC; |
| 88 | backend->conf.hash_algo = 1u << VIRTIO_CRYPTO_HASH_SHA1; |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 89 | backend->conf.akcipher_algo = 1u << VIRTIO_CRYPTO_AKCIPHER_RSA; |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 90 | /* |
| 91 | * Set the Maximum length of crypto request. |
| 92 | * Why this value? Just avoid to overflow when |
| 93 | * memory allocation for each crypto request. |
| 94 | */ |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 95 | backend->conf.max_size = LONG_MAX - sizeof(CryptoDevBackendOpInfo); |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 96 | backend->conf.max_cipher_key_len = CRYPTODEV_BUITLIN_MAX_CIPHER_KEY_LEN; |
| 97 | backend->conf.max_auth_key_len = CRYPTODEV_BUITLIN_MAX_AUTH_KEY_LEN; |
Gonglei | 6138dbd | 2016-12-22 11:12:39 +0800 | [diff] [blame] | 98 | |
| 99 | cryptodev_backend_set_ready(backend, true); |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 100 | } |
| 101 | |
| 102 | static int |
| 103 | cryptodev_builtin_get_unused_session_index( |
| 104 | CryptoDevBackendBuiltin *builtin) |
| 105 | { |
| 106 | size_t i; |
| 107 | |
| 108 | for (i = 0; i < MAX_NUM_SESSIONS; i++) { |
| 109 | if (builtin->sessions[i] == NULL) { |
| 110 | return i; |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | return -1; |
| 115 | } |
| 116 | |
Longpeng(Mike) | 465f2fe | 2016-12-05 19:39:08 +0800 | [diff] [blame] | 117 | #define AES_KEYSIZE_128 16 |
| 118 | #define AES_KEYSIZE_192 24 |
| 119 | #define AES_KEYSIZE_256 32 |
| 120 | #define AES_KEYSIZE_128_XTS AES_KEYSIZE_256 |
| 121 | #define AES_KEYSIZE_256_XTS 64 |
| 122 | |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 123 | static int |
Longpeng(Mike) | 465f2fe | 2016-12-05 19:39:08 +0800 | [diff] [blame] | 124 | cryptodev_builtin_get_aes_algo(uint32_t key_len, int mode, Error **errp) |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 125 | { |
| 126 | int algo; |
| 127 | |
Longpeng(Mike) | 465f2fe | 2016-12-05 19:39:08 +0800 | [diff] [blame] | 128 | if (key_len == AES_KEYSIZE_128) { |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 129 | algo = QCRYPTO_CIPHER_ALG_AES_128; |
Longpeng(Mike) | 465f2fe | 2016-12-05 19:39:08 +0800 | [diff] [blame] | 130 | } else if (key_len == AES_KEYSIZE_192) { |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 131 | algo = QCRYPTO_CIPHER_ALG_AES_192; |
Longpeng(Mike) | 465f2fe | 2016-12-05 19:39:08 +0800 | [diff] [blame] | 132 | } else if (key_len == AES_KEYSIZE_256) { /* equals AES_KEYSIZE_128_XTS */ |
| 133 | if (mode == QCRYPTO_CIPHER_MODE_XTS) { |
| 134 | algo = QCRYPTO_CIPHER_ALG_AES_128; |
| 135 | } else { |
| 136 | algo = QCRYPTO_CIPHER_ALG_AES_256; |
| 137 | } |
| 138 | } else if (key_len == AES_KEYSIZE_256_XTS) { |
| 139 | if (mode == QCRYPTO_CIPHER_MODE_XTS) { |
| 140 | algo = QCRYPTO_CIPHER_ALG_AES_256; |
| 141 | } else { |
| 142 | goto err; |
| 143 | } |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 144 | } else { |
Longpeng(Mike) | 465f2fe | 2016-12-05 19:39:08 +0800 | [diff] [blame] | 145 | goto err; |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 146 | } |
| 147 | |
| 148 | return algo; |
Longpeng(Mike) | 465f2fe | 2016-12-05 19:39:08 +0800 | [diff] [blame] | 149 | |
| 150 | err: |
| 151 | error_setg(errp, "Unsupported key length :%u", key_len); |
| 152 | return -1; |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 153 | } |
| 154 | |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 155 | static int cryptodev_builtin_get_rsa_hash_algo( |
| 156 | int virtio_rsa_hash, Error **errp) |
| 157 | { |
| 158 | switch (virtio_rsa_hash) { |
| 159 | case VIRTIO_CRYPTO_RSA_MD5: |
| 160 | return QCRYPTO_HASH_ALG_MD5; |
| 161 | |
| 162 | case VIRTIO_CRYPTO_RSA_SHA1: |
| 163 | return QCRYPTO_HASH_ALG_SHA1; |
| 164 | |
| 165 | case VIRTIO_CRYPTO_RSA_SHA256: |
| 166 | return QCRYPTO_HASH_ALG_SHA256; |
| 167 | |
| 168 | case VIRTIO_CRYPTO_RSA_SHA512: |
| 169 | return QCRYPTO_HASH_ALG_SHA512; |
| 170 | |
| 171 | default: |
| 172 | error_setg(errp, "Unsupported rsa hash algo: %d", virtio_rsa_hash); |
| 173 | return -1; |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | static int cryptodev_builtin_set_rsa_options( |
| 178 | int virtio_padding_algo, |
| 179 | int virtio_hash_algo, |
| 180 | QCryptoAkCipherOptionsRSA *opt, |
| 181 | Error **errp) |
| 182 | { |
| 183 | if (virtio_padding_algo == VIRTIO_CRYPTO_RSA_PKCS1_PADDING) { |
| 184 | int hash_alg; |
| 185 | |
| 186 | hash_alg = cryptodev_builtin_get_rsa_hash_algo(virtio_hash_algo, errp); |
| 187 | if (hash_alg < 0) { |
| 188 | return -1; |
| 189 | } |
| 190 | opt->hash_alg = hash_alg; |
| 191 | opt->padding_alg = QCRYPTO_RSA_PADDING_ALG_PKCS1; |
| 192 | return 0; |
| 193 | } |
| 194 | |
| 195 | if (virtio_padding_algo == VIRTIO_CRYPTO_RSA_RAW_PADDING) { |
| 196 | opt->padding_alg = QCRYPTO_RSA_PADDING_ALG_RAW; |
| 197 | return 0; |
| 198 | } |
| 199 | |
| 200 | error_setg(errp, "Unsupported rsa padding algo: %d", virtio_padding_algo); |
| 201 | return -1; |
| 202 | } |
| 203 | |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 204 | static int cryptodev_builtin_create_cipher_session( |
| 205 | CryptoDevBackendBuiltin *builtin, |
| 206 | CryptoDevBackendSymSessionInfo *sess_info, |
| 207 | Error **errp) |
| 208 | { |
| 209 | int algo; |
| 210 | int mode; |
| 211 | QCryptoCipher *cipher; |
| 212 | int index; |
| 213 | CryptoDevBackendBuiltinSession *sess; |
| 214 | |
| 215 | if (sess_info->op_type != VIRTIO_CRYPTO_SYM_OP_CIPHER) { |
| 216 | error_setg(errp, "Unsupported optype :%u", sess_info->op_type); |
| 217 | return -1; |
| 218 | } |
| 219 | |
| 220 | index = cryptodev_builtin_get_unused_session_index(builtin); |
| 221 | if (index < 0) { |
| 222 | error_setg(errp, "Total number of sessions created exceeds %u", |
| 223 | MAX_NUM_SESSIONS); |
| 224 | return -1; |
| 225 | } |
| 226 | |
| 227 | switch (sess_info->cipher_alg) { |
| 228 | case VIRTIO_CRYPTO_CIPHER_AES_ECB: |
Longpeng(Mike) | 465f2fe | 2016-12-05 19:39:08 +0800 | [diff] [blame] | 229 | mode = QCRYPTO_CIPHER_MODE_ECB; |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 230 | algo = cryptodev_builtin_get_aes_algo(sess_info->key_len, |
Longpeng(Mike) | 465f2fe | 2016-12-05 19:39:08 +0800 | [diff] [blame] | 231 | mode, errp); |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 232 | if (algo < 0) { |
| 233 | return -1; |
| 234 | } |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 235 | break; |
| 236 | case VIRTIO_CRYPTO_CIPHER_AES_CBC: |
Longpeng(Mike) | 465f2fe | 2016-12-05 19:39:08 +0800 | [diff] [blame] | 237 | mode = QCRYPTO_CIPHER_MODE_CBC; |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 238 | algo = cryptodev_builtin_get_aes_algo(sess_info->key_len, |
Longpeng(Mike) | 465f2fe | 2016-12-05 19:39:08 +0800 | [diff] [blame] | 239 | mode, errp); |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 240 | if (algo < 0) { |
| 241 | return -1; |
| 242 | } |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 243 | break; |
| 244 | case VIRTIO_CRYPTO_CIPHER_AES_CTR: |
Longpeng(Mike) | 465f2fe | 2016-12-05 19:39:08 +0800 | [diff] [blame] | 245 | mode = QCRYPTO_CIPHER_MODE_CTR; |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 246 | algo = cryptodev_builtin_get_aes_algo(sess_info->key_len, |
Longpeng(Mike) | 465f2fe | 2016-12-05 19:39:08 +0800 | [diff] [blame] | 247 | mode, errp); |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 248 | if (algo < 0) { |
| 249 | return -1; |
| 250 | } |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 251 | break; |
Longpeng(Mike) | eaa5740 | 2016-12-05 19:39:09 +0800 | [diff] [blame] | 252 | case VIRTIO_CRYPTO_CIPHER_AES_XTS: |
| 253 | mode = QCRYPTO_CIPHER_MODE_XTS; |
| 254 | algo = cryptodev_builtin_get_aes_algo(sess_info->key_len, |
| 255 | mode, errp); |
| 256 | if (algo < 0) { |
| 257 | return -1; |
| 258 | } |
| 259 | break; |
Longpeng(Mike) | 48ae36c | 2016-12-08 10:44:02 +0800 | [diff] [blame] | 260 | case VIRTIO_CRYPTO_CIPHER_3DES_ECB: |
| 261 | mode = QCRYPTO_CIPHER_MODE_ECB; |
| 262 | algo = QCRYPTO_CIPHER_ALG_3DES; |
| 263 | break; |
| 264 | case VIRTIO_CRYPTO_CIPHER_3DES_CBC: |
| 265 | mode = QCRYPTO_CIPHER_MODE_CBC; |
| 266 | algo = QCRYPTO_CIPHER_ALG_3DES; |
| 267 | break; |
| 268 | case VIRTIO_CRYPTO_CIPHER_3DES_CTR: |
| 269 | mode = QCRYPTO_CIPHER_MODE_CTR; |
| 270 | algo = QCRYPTO_CIPHER_ALG_3DES; |
| 271 | break; |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 272 | default: |
| 273 | error_setg(errp, "Unsupported cipher alg :%u", |
| 274 | sess_info->cipher_alg); |
| 275 | return -1; |
| 276 | } |
| 277 | |
| 278 | cipher = qcrypto_cipher_new(algo, mode, |
| 279 | sess_info->cipher_key, |
| 280 | sess_info->key_len, |
| 281 | errp); |
| 282 | if (!cipher) { |
| 283 | return -1; |
| 284 | } |
| 285 | |
| 286 | sess = g_new0(CryptoDevBackendBuiltinSession, 1); |
| 287 | sess->cipher = cipher; |
| 288 | sess->direction = sess_info->direction; |
| 289 | sess->type = sess_info->op_type; |
| 290 | |
| 291 | builtin->sessions[index] = sess; |
| 292 | |
| 293 | return index; |
| 294 | } |
| 295 | |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 296 | static int cryptodev_builtin_create_akcipher_session( |
| 297 | CryptoDevBackendBuiltin *builtin, |
| 298 | CryptoDevBackendAsymSessionInfo *sess_info, |
| 299 | Error **errp) |
| 300 | { |
| 301 | CryptoDevBackendBuiltinSession *sess; |
| 302 | QCryptoAkCipher *akcipher; |
| 303 | int index; |
| 304 | QCryptoAkCipherKeyType type; |
| 305 | QCryptoAkCipherOptions opts; |
| 306 | |
| 307 | switch (sess_info->algo) { |
| 308 | case VIRTIO_CRYPTO_AKCIPHER_RSA: |
| 309 | opts.alg = QCRYPTO_AKCIPHER_ALG_RSA; |
| 310 | if (cryptodev_builtin_set_rsa_options(sess_info->u.rsa.padding_algo, |
| 311 | sess_info->u.rsa.hash_algo, &opts.u.rsa, errp) != 0) { |
| 312 | return -1; |
| 313 | } |
| 314 | break; |
| 315 | |
| 316 | /* TODO support DSA&ECDSA until qemu crypto framework support these */ |
| 317 | |
| 318 | default: |
| 319 | error_setg(errp, "Unsupported akcipher alg %u", sess_info->algo); |
| 320 | return -1; |
| 321 | } |
| 322 | |
| 323 | switch (sess_info->keytype) { |
| 324 | case VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PUBLIC: |
| 325 | type = QCRYPTO_AKCIPHER_KEY_TYPE_PUBLIC; |
| 326 | break; |
| 327 | |
| 328 | case VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PRIVATE: |
| 329 | type = QCRYPTO_AKCIPHER_KEY_TYPE_PRIVATE; |
| 330 | break; |
| 331 | |
| 332 | default: |
| 333 | error_setg(errp, "Unsupported akcipher keytype %u", sess_info->keytype); |
| 334 | return -1; |
| 335 | } |
| 336 | |
| 337 | index = cryptodev_builtin_get_unused_session_index(builtin); |
| 338 | if (index < 0) { |
| 339 | error_setg(errp, "Total number of sessions created exceeds %u", |
| 340 | MAX_NUM_SESSIONS); |
| 341 | return -1; |
| 342 | } |
| 343 | |
| 344 | akcipher = qcrypto_akcipher_new(&opts, type, sess_info->key, |
| 345 | sess_info->keylen, errp); |
| 346 | if (!akcipher) { |
| 347 | return -1; |
| 348 | } |
| 349 | |
| 350 | sess = g_new0(CryptoDevBackendBuiltinSession, 1); |
| 351 | sess->akcipher = akcipher; |
| 352 | |
| 353 | builtin->sessions[index] = sess; |
| 354 | |
| 355 | return index; |
| 356 | } |
| 357 | |
Lei He | 2fda101 | 2022-10-08 16:50:27 +0800 | [diff] [blame] | 358 | static int cryptodev_builtin_create_session( |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 359 | CryptoDevBackend *backend, |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 360 | CryptoDevBackendSessionInfo *sess_info, |
Lei He | 2fda101 | 2022-10-08 16:50:27 +0800 | [diff] [blame] | 361 | uint32_t queue_index, |
| 362 | CryptoDevCompletionFunc cb, |
| 363 | void *opaque) |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 364 | { |
| 365 | CryptoDevBackendBuiltin *builtin = |
| 366 | CRYPTODEV_BACKEND_BUILTIN(backend); |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 367 | CryptoDevBackendSymSessionInfo *sym_sess_info; |
| 368 | CryptoDevBackendAsymSessionInfo *asym_sess_info; |
Lei He | 2fda101 | 2022-10-08 16:50:27 +0800 | [diff] [blame] | 369 | int ret, status; |
| 370 | Error *local_error = NULL; |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 371 | |
| 372 | switch (sess_info->op_code) { |
| 373 | case VIRTIO_CRYPTO_CIPHER_CREATE_SESSION: |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 374 | sym_sess_info = &sess_info->u.sym_sess_info; |
Lei He | 2fda101 | 2022-10-08 16:50:27 +0800 | [diff] [blame] | 375 | ret = cryptodev_builtin_create_cipher_session( |
| 376 | builtin, sym_sess_info, &local_error); |
| 377 | break; |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 378 | |
| 379 | case VIRTIO_CRYPTO_AKCIPHER_CREATE_SESSION: |
| 380 | asym_sess_info = &sess_info->u.asym_sess_info; |
Lei He | 2fda101 | 2022-10-08 16:50:27 +0800 | [diff] [blame] | 381 | ret = cryptodev_builtin_create_akcipher_session( |
| 382 | builtin, asym_sess_info, &local_error); |
| 383 | break; |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 384 | |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 385 | case VIRTIO_CRYPTO_HASH_CREATE_SESSION: |
| 386 | case VIRTIO_CRYPTO_MAC_CREATE_SESSION: |
| 387 | default: |
Lei He | 2fda101 | 2022-10-08 16:50:27 +0800 | [diff] [blame] | 388 | error_setg(&local_error, "Unsupported opcode :%" PRIu32 "", |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 389 | sess_info->op_code); |
Lei He | 2fda101 | 2022-10-08 16:50:27 +0800 | [diff] [blame] | 390 | return -VIRTIO_CRYPTO_NOTSUPP; |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 391 | } |
| 392 | |
Lei He | 2fda101 | 2022-10-08 16:50:27 +0800 | [diff] [blame] | 393 | if (local_error) { |
| 394 | error_report_err(local_error); |
| 395 | } |
| 396 | if (ret < 0) { |
| 397 | status = -VIRTIO_CRYPTO_ERR; |
| 398 | } else { |
| 399 | sess_info->session_id = ret; |
| 400 | status = VIRTIO_CRYPTO_OK; |
| 401 | } |
| 402 | if (cb) { |
| 403 | cb(opaque, status); |
| 404 | } |
| 405 | return 0; |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 406 | } |
| 407 | |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 408 | static int cryptodev_builtin_close_session( |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 409 | CryptoDevBackend *backend, |
| 410 | uint64_t session_id, |
Lei He | 2fda101 | 2022-10-08 16:50:27 +0800 | [diff] [blame] | 411 | uint32_t queue_index, |
| 412 | CryptoDevCompletionFunc cb, |
| 413 | void *opaque) |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 414 | { |
| 415 | CryptoDevBackendBuiltin *builtin = |
| 416 | CRYPTODEV_BACKEND_BUILTIN(backend); |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 417 | CryptoDevBackendBuiltinSession *session; |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 418 | |
Markus Armbruster | 2a340b6 | 2020-04-22 15:07:06 +0200 | [diff] [blame] | 419 | assert(session_id < MAX_NUM_SESSIONS && builtin->sessions[session_id]); |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 420 | |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 421 | session = builtin->sessions[session_id]; |
| 422 | if (session->cipher) { |
| 423 | qcrypto_cipher_free(session->cipher); |
| 424 | } else if (session->akcipher) { |
| 425 | qcrypto_akcipher_free(session->akcipher); |
| 426 | } |
| 427 | |
| 428 | g_free(session); |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 429 | builtin->sessions[session_id] = NULL; |
Lei He | 2fda101 | 2022-10-08 16:50:27 +0800 | [diff] [blame] | 430 | if (cb) { |
| 431 | cb(opaque, VIRTIO_CRYPTO_OK); |
| 432 | } |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 433 | return 0; |
| 434 | } |
| 435 | |
| 436 | static int cryptodev_builtin_sym_operation( |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 437 | CryptoDevBackendBuiltinSession *sess, |
| 438 | CryptoDevBackendSymOpInfo *op_info, Error **errp) |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 439 | { |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 440 | int ret; |
| 441 | |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 442 | if (op_info->op_type == VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING) { |
| 443 | error_setg(errp, |
| 444 | "Algorithm chain is unsupported for cryptdoev-builtin"); |
| 445 | return -VIRTIO_CRYPTO_NOTSUPP; |
| 446 | } |
| 447 | |
Longpeng(Mike) | 50d19cf | 2017-01-14 14:14:27 +0800 | [diff] [blame] | 448 | if (op_info->iv_len > 0) { |
| 449 | ret = qcrypto_cipher_setiv(sess->cipher, op_info->iv, |
| 450 | op_info->iv_len, errp); |
| 451 | if (ret < 0) { |
| 452 | return -VIRTIO_CRYPTO_ERR; |
| 453 | } |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 454 | } |
| 455 | |
| 456 | if (sess->direction == VIRTIO_CRYPTO_OP_ENCRYPT) { |
| 457 | ret = qcrypto_cipher_encrypt(sess->cipher, op_info->src, |
| 458 | op_info->dst, op_info->src_len, errp); |
| 459 | if (ret < 0) { |
| 460 | return -VIRTIO_CRYPTO_ERR; |
| 461 | } |
| 462 | } else { |
| 463 | ret = qcrypto_cipher_decrypt(sess->cipher, op_info->src, |
| 464 | op_info->dst, op_info->src_len, errp); |
| 465 | if (ret < 0) { |
| 466 | return -VIRTIO_CRYPTO_ERR; |
| 467 | } |
| 468 | } |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 469 | |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 470 | return VIRTIO_CRYPTO_OK; |
| 471 | } |
| 472 | |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 473 | static int cryptodev_builtin_asym_operation( |
| 474 | CryptoDevBackendBuiltinSession *sess, uint32_t op_code, |
| 475 | CryptoDevBackendAsymOpInfo *op_info, Error **errp) |
| 476 | { |
| 477 | int ret; |
| 478 | |
| 479 | switch (op_code) { |
| 480 | case VIRTIO_CRYPTO_AKCIPHER_ENCRYPT: |
| 481 | ret = qcrypto_akcipher_encrypt(sess->akcipher, |
| 482 | op_info->src, op_info->src_len, |
| 483 | op_info->dst, op_info->dst_len, errp); |
| 484 | break; |
| 485 | |
| 486 | case VIRTIO_CRYPTO_AKCIPHER_DECRYPT: |
| 487 | ret = qcrypto_akcipher_decrypt(sess->akcipher, |
| 488 | op_info->src, op_info->src_len, |
| 489 | op_info->dst, op_info->dst_len, errp); |
| 490 | break; |
| 491 | |
| 492 | case VIRTIO_CRYPTO_AKCIPHER_SIGN: |
| 493 | ret = qcrypto_akcipher_sign(sess->akcipher, |
| 494 | op_info->src, op_info->src_len, |
| 495 | op_info->dst, op_info->dst_len, errp); |
| 496 | break; |
| 497 | |
| 498 | case VIRTIO_CRYPTO_AKCIPHER_VERIFY: |
| 499 | ret = qcrypto_akcipher_verify(sess->akcipher, |
| 500 | op_info->src, op_info->src_len, |
| 501 | op_info->dst, op_info->dst_len, errp); |
| 502 | break; |
| 503 | |
| 504 | default: |
| 505 | return -VIRTIO_CRYPTO_ERR; |
| 506 | } |
| 507 | |
| 508 | if (ret < 0) { |
| 509 | if (op_code == VIRTIO_CRYPTO_AKCIPHER_VERIFY) { |
| 510 | return -VIRTIO_CRYPTO_KEY_REJECTED; |
| 511 | } |
| 512 | return -VIRTIO_CRYPTO_ERR; |
| 513 | } |
| 514 | |
| 515 | /* Buffer is too short, typically the driver should handle this case */ |
| 516 | if (unlikely(ret > op_info->dst_len)) { |
| 517 | if (errp && !*errp) { |
| 518 | error_setg(errp, "dst buffer too short"); |
| 519 | } |
| 520 | |
| 521 | return -VIRTIO_CRYPTO_ERR; |
| 522 | } |
| 523 | |
| 524 | op_info->dst_len = ret; |
| 525 | |
| 526 | return VIRTIO_CRYPTO_OK; |
| 527 | } |
| 528 | |
| 529 | static int cryptodev_builtin_operation( |
| 530 | CryptoDevBackend *backend, |
| 531 | CryptoDevBackendOpInfo *op_info, |
Lei He | 2fda101 | 2022-10-08 16:50:27 +0800 | [diff] [blame] | 532 | uint32_t queue_index, |
| 533 | CryptoDevCompletionFunc cb, |
| 534 | void *opaque) |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 535 | { |
| 536 | CryptoDevBackendBuiltin *builtin = |
| 537 | CRYPTODEV_BACKEND_BUILTIN(backend); |
| 538 | CryptoDevBackendBuiltinSession *sess; |
| 539 | CryptoDevBackendSymOpInfo *sym_op_info; |
| 540 | CryptoDevBackendAsymOpInfo *asym_op_info; |
| 541 | enum CryptoDevBackendAlgType algtype = op_info->algtype; |
Lei He | 2fda101 | 2022-10-08 16:50:27 +0800 | [diff] [blame] | 542 | int status = -VIRTIO_CRYPTO_ERR; |
| 543 | Error *local_error = NULL; |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 544 | |
| 545 | if (op_info->session_id >= MAX_NUM_SESSIONS || |
| 546 | builtin->sessions[op_info->session_id] == NULL) { |
Lei He | 2fda101 | 2022-10-08 16:50:27 +0800 | [diff] [blame] | 547 | error_setg(&local_error, "Cannot find a valid session id: %" PRIu64 "", |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 548 | op_info->session_id); |
| 549 | return -VIRTIO_CRYPTO_INVSESS; |
| 550 | } |
| 551 | |
| 552 | sess = builtin->sessions[op_info->session_id]; |
| 553 | if (algtype == CRYPTODEV_BACKEND_ALG_SYM) { |
| 554 | sym_op_info = op_info->u.sym_op_info; |
Lei He | 2fda101 | 2022-10-08 16:50:27 +0800 | [diff] [blame] | 555 | status = cryptodev_builtin_sym_operation(sess, sym_op_info, |
| 556 | &local_error); |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 557 | } else if (algtype == CRYPTODEV_BACKEND_ALG_ASYM) { |
| 558 | asym_op_info = op_info->u.asym_op_info; |
Lei He | 2fda101 | 2022-10-08 16:50:27 +0800 | [diff] [blame] | 559 | status = cryptodev_builtin_asym_operation(sess, op_info->op_code, |
| 560 | asym_op_info, &local_error); |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 561 | } |
| 562 | |
Lei He | 2fda101 | 2022-10-08 16:50:27 +0800 | [diff] [blame] | 563 | if (local_error) { |
| 564 | error_report_err(local_error); |
| 565 | } |
| 566 | if (cb) { |
| 567 | cb(opaque, status); |
| 568 | } |
| 569 | return 0; |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 570 | } |
| 571 | |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 572 | static void cryptodev_builtin_cleanup( |
| 573 | CryptoDevBackend *backend, |
| 574 | Error **errp) |
| 575 | { |
| 576 | CryptoDevBackendBuiltin *builtin = |
| 577 | CRYPTODEV_BACKEND_BUILTIN(backend); |
| 578 | size_t i; |
| 579 | int queues = backend->conf.peers.queues; |
| 580 | CryptoDevBackendClient *cc; |
| 581 | |
| 582 | for (i = 0; i < MAX_NUM_SESSIONS; i++) { |
| 583 | if (builtin->sessions[i] != NULL) { |
Lei He | 2fda101 | 2022-10-08 16:50:27 +0800 | [diff] [blame] | 584 | cryptodev_builtin_close_session(backend, i, 0, NULL, NULL); |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 585 | } |
| 586 | } |
| 587 | |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 588 | for (i = 0; i < queues; i++) { |
| 589 | cc = backend->conf.peers.ccs[i]; |
| 590 | if (cc) { |
| 591 | cryptodev_backend_free_client(cc); |
| 592 | backend->conf.peers.ccs[i] = NULL; |
| 593 | } |
| 594 | } |
Gonglei | 6138dbd | 2016-12-22 11:12:39 +0800 | [diff] [blame] | 595 | |
| 596 | cryptodev_backend_set_ready(backend, false); |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 597 | } |
| 598 | |
| 599 | static void |
| 600 | cryptodev_builtin_class_init(ObjectClass *oc, void *data) |
| 601 | { |
| 602 | CryptoDevBackendClass *bc = CRYPTODEV_BACKEND_CLASS(oc); |
| 603 | |
| 604 | bc->init = cryptodev_builtin_init; |
| 605 | bc->cleanup = cryptodev_builtin_cleanup; |
zhenwei pi | 0e660a6 | 2022-06-11 14:42:43 +0800 | [diff] [blame] | 606 | bc->create_session = cryptodev_builtin_create_session; |
| 607 | bc->close_session = cryptodev_builtin_close_session; |
| 608 | bc->do_op = cryptodev_builtin_operation; |
Gonglei | 1653a5f | 2016-10-28 16:33:23 +0800 | [diff] [blame] | 609 | } |
| 610 | |
| 611 | static const TypeInfo cryptodev_builtin_info = { |
| 612 | .name = TYPE_CRYPTODEV_BACKEND_BUILTIN, |
| 613 | .parent = TYPE_CRYPTODEV_BACKEND, |
| 614 | .class_init = cryptodev_builtin_class_init, |
| 615 | .instance_size = sizeof(CryptoDevBackendBuiltin), |
| 616 | }; |
| 617 | |
| 618 | static void |
| 619 | cryptodev_builtin_register_types(void) |
| 620 | { |
| 621 | type_register_static(&cryptodev_builtin_info); |
| 622 | } |
| 623 | |
| 624 | type_init(cryptodev_builtin_register_types); |