YOSHIFUJI Hideaki | a716c11 | 2007-02-09 23:25:29 +0900 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * xfrm algorithm interface |
| 3 | * |
| 4 | * Copyright (c) 2002 James Morris <jmorris@intercode.com.au> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by the Free |
YOSHIFUJI Hideaki | a716c11 | 2007-02-09 23:25:29 +0900 | [diff] [blame] | 8 | * Software Foundation; either version 2 of the License, or (at your option) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | * any later version. |
| 10 | */ |
| 11 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | #include <linux/module.h> |
| 13 | #include <linux/kernel.h> |
| 14 | #include <linux/pfkeyv2.h> |
| 15 | #include <linux/crypto.h> |
Heiko Carstens | b3b724f | 2007-10-23 09:28:34 +0200 | [diff] [blame] | 16 | #include <linux/scatterlist.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | #include <net/xfrm.h> |
| 18 | #if defined(CONFIG_INET_AH) || defined(CONFIG_INET_AH_MODULE) || defined(CONFIG_INET6_AH) || defined(CONFIG_INET6_AH_MODULE) |
| 19 | #include <net/ah.h> |
| 20 | #endif |
| 21 | #if defined(CONFIG_INET_ESP) || defined(CONFIG_INET_ESP_MODULE) || defined(CONFIG_INET6_ESP) || defined(CONFIG_INET6_ESP_MODULE) |
| 22 | #include <net/esp.h> |
| 23 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | |
| 25 | /* |
| 26 | * Algorithms supported by IPsec. These entries contain properties which |
| 27 | * are used in key negotiation and xfrm processing, and are used to verify |
| 28 | * that instantiated crypto transforms have correct parameters for IPsec |
| 29 | * purposes. |
| 30 | */ |
Herbert Xu | 1a6509d | 2008-01-28 19:37:29 -0800 | [diff] [blame] | 31 | static struct xfrm_algo_desc aead_list[] = { |
| 32 | { |
| 33 | .name = "rfc4106(gcm(aes))", |
| 34 | |
| 35 | .uinfo = { |
| 36 | .aead = { |
| 37 | .icv_truncbits = 64, |
| 38 | } |
| 39 | }, |
| 40 | |
| 41 | .desc = { |
| 42 | .sadb_alg_id = SADB_X_EALG_AES_GCM_ICV8, |
| 43 | .sadb_alg_ivlen = 8, |
| 44 | .sadb_alg_minbits = 128, |
| 45 | .sadb_alg_maxbits = 256 |
| 46 | } |
| 47 | }, |
| 48 | { |
| 49 | .name = "rfc4106(gcm(aes))", |
| 50 | |
| 51 | .uinfo = { |
| 52 | .aead = { |
| 53 | .icv_truncbits = 96, |
| 54 | } |
| 55 | }, |
| 56 | |
| 57 | .desc = { |
| 58 | .sadb_alg_id = SADB_X_EALG_AES_GCM_ICV12, |
| 59 | .sadb_alg_ivlen = 8, |
| 60 | .sadb_alg_minbits = 128, |
| 61 | .sadb_alg_maxbits = 256 |
| 62 | } |
| 63 | }, |
| 64 | { |
| 65 | .name = "rfc4106(gcm(aes))", |
| 66 | |
| 67 | .uinfo = { |
| 68 | .aead = { |
| 69 | .icv_truncbits = 128, |
| 70 | } |
| 71 | }, |
| 72 | |
| 73 | .desc = { |
| 74 | .sadb_alg_id = SADB_X_EALG_AES_GCM_ICV16, |
| 75 | .sadb_alg_ivlen = 8, |
| 76 | .sadb_alg_minbits = 128, |
| 77 | .sadb_alg_maxbits = 256 |
| 78 | } |
| 79 | }, |
| 80 | { |
| 81 | .name = "rfc4309(ccm(aes))", |
| 82 | |
| 83 | .uinfo = { |
| 84 | .aead = { |
| 85 | .icv_truncbits = 64, |
| 86 | } |
| 87 | }, |
| 88 | |
| 89 | .desc = { |
| 90 | .sadb_alg_id = SADB_X_EALG_AES_CCM_ICV8, |
| 91 | .sadb_alg_ivlen = 8, |
| 92 | .sadb_alg_minbits = 128, |
| 93 | .sadb_alg_maxbits = 256 |
| 94 | } |
| 95 | }, |
| 96 | { |
| 97 | .name = "rfc4309(ccm(aes))", |
| 98 | |
| 99 | .uinfo = { |
| 100 | .aead = { |
| 101 | .icv_truncbits = 96, |
| 102 | } |
| 103 | }, |
| 104 | |
| 105 | .desc = { |
| 106 | .sadb_alg_id = SADB_X_EALG_AES_CCM_ICV12, |
| 107 | .sadb_alg_ivlen = 8, |
| 108 | .sadb_alg_minbits = 128, |
| 109 | .sadb_alg_maxbits = 256 |
| 110 | } |
| 111 | }, |
| 112 | { |
| 113 | .name = "rfc4309(ccm(aes))", |
| 114 | |
| 115 | .uinfo = { |
| 116 | .aead = { |
| 117 | .icv_truncbits = 128, |
| 118 | } |
| 119 | }, |
| 120 | |
| 121 | .desc = { |
| 122 | .sadb_alg_id = SADB_X_EALG_AES_CCM_ICV16, |
| 123 | .sadb_alg_ivlen = 8, |
| 124 | .sadb_alg_minbits = 128, |
| 125 | .sadb_alg_maxbits = 256 |
| 126 | } |
| 127 | }, |
Tobias Brunner | 73c89c1 | 2010-01-17 21:52:11 +1100 | [diff] [blame] | 128 | { |
| 129 | .name = "rfc4543(gcm(aes))", |
| 130 | |
| 131 | .uinfo = { |
| 132 | .aead = { |
| 133 | .icv_truncbits = 128, |
| 134 | } |
| 135 | }, |
| 136 | |
| 137 | .desc = { |
| 138 | .sadb_alg_id = SADB_X_EALG_NULL_AES_GMAC, |
| 139 | .sadb_alg_ivlen = 8, |
| 140 | .sadb_alg_minbits = 128, |
| 141 | .sadb_alg_maxbits = 256 |
| 142 | } |
| 143 | }, |
Herbert Xu | 1a6509d | 2008-01-28 19:37:29 -0800 | [diff] [blame] | 144 | }; |
| 145 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | static struct xfrm_algo_desc aalg_list[] = { |
| 147 | { |
Herbert Xu | 01a2202 | 2008-04-27 00:59:59 -0700 | [diff] [blame] | 148 | .name = "digest_null", |
YOSHIFUJI Hideaki | a716c11 | 2007-02-09 23:25:29 +0900 | [diff] [blame] | 149 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | .uinfo = { |
| 151 | .auth = { |
| 152 | .icv_truncbits = 0, |
| 153 | .icv_fullbits = 0, |
| 154 | } |
| 155 | }, |
YOSHIFUJI Hideaki | a716c11 | 2007-02-09 23:25:29 +0900 | [diff] [blame] | 156 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | .desc = { |
| 158 | .sadb_alg_id = SADB_X_AALG_NULL, |
| 159 | .sadb_alg_ivlen = 0, |
| 160 | .sadb_alg_minbits = 0, |
| 161 | .sadb_alg_maxbits = 0 |
| 162 | } |
| 163 | }, |
| 164 | { |
Herbert Xu | 07d4ee5 | 2006-08-20 14:24:50 +1000 | [diff] [blame] | 165 | .name = "hmac(md5)", |
| 166 | .compat = "md5", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | |
| 168 | .uinfo = { |
| 169 | .auth = { |
| 170 | .icv_truncbits = 96, |
| 171 | .icv_fullbits = 128, |
| 172 | } |
| 173 | }, |
YOSHIFUJI Hideaki | a716c11 | 2007-02-09 23:25:29 +0900 | [diff] [blame] | 174 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | .desc = { |
| 176 | .sadb_alg_id = SADB_AALG_MD5HMAC, |
| 177 | .sadb_alg_ivlen = 0, |
| 178 | .sadb_alg_minbits = 128, |
| 179 | .sadb_alg_maxbits = 128 |
| 180 | } |
| 181 | }, |
| 182 | { |
Herbert Xu | 07d4ee5 | 2006-08-20 14:24:50 +1000 | [diff] [blame] | 183 | .name = "hmac(sha1)", |
| 184 | .compat = "sha1", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | |
| 186 | .uinfo = { |
| 187 | .auth = { |
| 188 | .icv_truncbits = 96, |
| 189 | .icv_fullbits = 160, |
| 190 | } |
| 191 | }, |
| 192 | |
| 193 | .desc = { |
| 194 | .sadb_alg_id = SADB_AALG_SHA1HMAC, |
| 195 | .sadb_alg_ivlen = 0, |
| 196 | .sadb_alg_minbits = 160, |
| 197 | .sadb_alg_maxbits = 160 |
| 198 | } |
| 199 | }, |
| 200 | { |
Herbert Xu | 07d4ee5 | 2006-08-20 14:24:50 +1000 | [diff] [blame] | 201 | .name = "hmac(sha256)", |
| 202 | .compat = "sha256", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | |
| 204 | .uinfo = { |
| 205 | .auth = { |
| 206 | .icv_truncbits = 96, |
| 207 | .icv_fullbits = 256, |
| 208 | } |
| 209 | }, |
| 210 | |
| 211 | .desc = { |
| 212 | .sadb_alg_id = SADB_X_AALG_SHA2_256HMAC, |
| 213 | .sadb_alg_ivlen = 0, |
| 214 | .sadb_alg_minbits = 256, |
| 215 | .sadb_alg_maxbits = 256 |
| 216 | } |
| 217 | }, |
| 218 | { |
Martin Willi | bc74b0c | 2009-11-25 00:58:39 +0000 | [diff] [blame] | 219 | .name = "hmac(sha384)", |
| 220 | |
| 221 | .uinfo = { |
| 222 | .auth = { |
| 223 | .icv_truncbits = 192, |
| 224 | .icv_fullbits = 384, |
| 225 | } |
| 226 | }, |
| 227 | |
| 228 | .desc = { |
| 229 | .sadb_alg_id = SADB_X_AALG_SHA2_384HMAC, |
| 230 | .sadb_alg_ivlen = 0, |
| 231 | .sadb_alg_minbits = 384, |
| 232 | .sadb_alg_maxbits = 384 |
| 233 | } |
| 234 | }, |
| 235 | { |
| 236 | .name = "hmac(sha512)", |
| 237 | |
| 238 | .uinfo = { |
| 239 | .auth = { |
| 240 | .icv_truncbits = 256, |
| 241 | .icv_fullbits = 512, |
| 242 | } |
| 243 | }, |
| 244 | |
| 245 | .desc = { |
| 246 | .sadb_alg_id = SADB_X_AALG_SHA2_512HMAC, |
| 247 | .sadb_alg_ivlen = 0, |
| 248 | .sadb_alg_minbits = 512, |
| 249 | .sadb_alg_maxbits = 512 |
| 250 | } |
| 251 | }, |
| 252 | { |
Adrian-Ken Rueegsegger | a13366c | 2008-06-04 12:04:55 -0700 | [diff] [blame] | 253 | .name = "hmac(rmd160)", |
| 254 | .compat = "rmd160", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | |
| 256 | .uinfo = { |
| 257 | .auth = { |
| 258 | .icv_truncbits = 96, |
| 259 | .icv_fullbits = 160, |
| 260 | } |
| 261 | }, |
| 262 | |
| 263 | .desc = { |
| 264 | .sadb_alg_id = SADB_X_AALG_RIPEMD160HMAC, |
| 265 | .sadb_alg_ivlen = 0, |
| 266 | .sadb_alg_minbits = 160, |
| 267 | .sadb_alg_maxbits = 160 |
| 268 | } |
| 269 | }, |
Kazunori MIYAZAWA | 7cf4c1a | 2006-10-28 13:21:22 +1000 | [diff] [blame] | 270 | { |
| 271 | .name = "xcbc(aes)", |
| 272 | |
| 273 | .uinfo = { |
| 274 | .auth = { |
| 275 | .icv_truncbits = 96, |
| 276 | .icv_fullbits = 128, |
| 277 | } |
| 278 | }, |
| 279 | |
| 280 | .desc = { |
| 281 | .sadb_alg_id = SADB_X_AALG_AES_XCBC_MAC, |
| 282 | .sadb_alg_ivlen = 0, |
| 283 | .sadb_alg_minbits = 128, |
| 284 | .sadb_alg_maxbits = 128 |
| 285 | } |
| 286 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | }; |
| 288 | |
| 289 | static struct xfrm_algo_desc ealg_list[] = { |
| 290 | { |
Herbert Xu | 6b7326c | 2006-07-30 15:41:01 +1000 | [diff] [blame] | 291 | .name = "ecb(cipher_null)", |
| 292 | .compat = "cipher_null", |
YOSHIFUJI Hideaki | a716c11 | 2007-02-09 23:25:29 +0900 | [diff] [blame] | 293 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | .uinfo = { |
| 295 | .encr = { |
| 296 | .blockbits = 8, |
| 297 | .defkeybits = 0, |
| 298 | } |
| 299 | }, |
YOSHIFUJI Hideaki | a716c11 | 2007-02-09 23:25:29 +0900 | [diff] [blame] | 300 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | .desc = { |
| 302 | .sadb_alg_id = SADB_EALG_NULL, |
| 303 | .sadb_alg_ivlen = 0, |
| 304 | .sadb_alg_minbits = 0, |
| 305 | .sadb_alg_maxbits = 0 |
| 306 | } |
| 307 | }, |
| 308 | { |
Herbert Xu | 6b7326c | 2006-07-30 15:41:01 +1000 | [diff] [blame] | 309 | .name = "cbc(des)", |
| 310 | .compat = "des", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | |
| 312 | .uinfo = { |
| 313 | .encr = { |
| 314 | .blockbits = 64, |
| 315 | .defkeybits = 64, |
| 316 | } |
| 317 | }, |
| 318 | |
| 319 | .desc = { |
| 320 | .sadb_alg_id = SADB_EALG_DESCBC, |
| 321 | .sadb_alg_ivlen = 8, |
| 322 | .sadb_alg_minbits = 64, |
| 323 | .sadb_alg_maxbits = 64 |
| 324 | } |
| 325 | }, |
| 326 | { |
Herbert Xu | 6b7326c | 2006-07-30 15:41:01 +1000 | [diff] [blame] | 327 | .name = "cbc(des3_ede)", |
| 328 | .compat = "des3_ede", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | |
| 330 | .uinfo = { |
| 331 | .encr = { |
| 332 | .blockbits = 64, |
| 333 | .defkeybits = 192, |
| 334 | } |
| 335 | }, |
| 336 | |
| 337 | .desc = { |
| 338 | .sadb_alg_id = SADB_EALG_3DESCBC, |
| 339 | .sadb_alg_ivlen = 8, |
| 340 | .sadb_alg_minbits = 192, |
| 341 | .sadb_alg_maxbits = 192 |
| 342 | } |
| 343 | }, |
| 344 | { |
Herbert Xu | 245acb8 | 2009-06-24 03:55:41 -0700 | [diff] [blame] | 345 | .name = "cbc(cast5)", |
| 346 | .compat = "cast5", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | |
| 348 | .uinfo = { |
| 349 | .encr = { |
| 350 | .blockbits = 64, |
| 351 | .defkeybits = 128, |
| 352 | } |
| 353 | }, |
| 354 | |
| 355 | .desc = { |
| 356 | .sadb_alg_id = SADB_X_EALG_CASTCBC, |
| 357 | .sadb_alg_ivlen = 8, |
| 358 | .sadb_alg_minbits = 40, |
| 359 | .sadb_alg_maxbits = 128 |
| 360 | } |
| 361 | }, |
| 362 | { |
Herbert Xu | 6b7326c | 2006-07-30 15:41:01 +1000 | [diff] [blame] | 363 | .name = "cbc(blowfish)", |
| 364 | .compat = "blowfish", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | |
| 366 | .uinfo = { |
| 367 | .encr = { |
| 368 | .blockbits = 64, |
| 369 | .defkeybits = 128, |
| 370 | } |
| 371 | }, |
| 372 | |
| 373 | .desc = { |
| 374 | .sadb_alg_id = SADB_X_EALG_BLOWFISHCBC, |
| 375 | .sadb_alg_ivlen = 8, |
| 376 | .sadb_alg_minbits = 40, |
| 377 | .sadb_alg_maxbits = 448 |
| 378 | } |
| 379 | }, |
| 380 | { |
Herbert Xu | 6b7326c | 2006-07-30 15:41:01 +1000 | [diff] [blame] | 381 | .name = "cbc(aes)", |
| 382 | .compat = "aes", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | |
| 384 | .uinfo = { |
| 385 | .encr = { |
| 386 | .blockbits = 128, |
| 387 | .defkeybits = 128, |
| 388 | } |
| 389 | }, |
| 390 | |
| 391 | .desc = { |
| 392 | .sadb_alg_id = SADB_X_EALG_AESCBC, |
| 393 | .sadb_alg_ivlen = 8, |
| 394 | .sadb_alg_minbits = 128, |
| 395 | .sadb_alg_maxbits = 256 |
| 396 | } |
| 397 | }, |
| 398 | { |
YOSHIFUJI Hideaki | a716c11 | 2007-02-09 23:25:29 +0900 | [diff] [blame] | 399 | .name = "cbc(serpent)", |
| 400 | .compat = "serpent", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | |
YOSHIFUJI Hideaki | a716c11 | 2007-02-09 23:25:29 +0900 | [diff] [blame] | 402 | .uinfo = { |
| 403 | .encr = { |
| 404 | .blockbits = 128, |
| 405 | .defkeybits = 128, |
| 406 | } |
| 407 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | |
YOSHIFUJI Hideaki | a716c11 | 2007-02-09 23:25:29 +0900 | [diff] [blame] | 409 | .desc = { |
| 410 | .sadb_alg_id = SADB_X_EALG_SERPENTCBC, |
| 411 | .sadb_alg_ivlen = 8, |
| 412 | .sadb_alg_minbits = 128, |
| 413 | .sadb_alg_maxbits = 256, |
| 414 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | }, |
| 416 | { |
Noriaki TAKAMIYA | 6a0dc8d | 2006-10-22 15:05:57 +1000 | [diff] [blame] | 417 | .name = "cbc(camellia)", |
Li Yewang | 138f3c8 | 2009-12-01 15:35:05 -0800 | [diff] [blame] | 418 | .compat = "camellia", |
Noriaki TAKAMIYA | 6a0dc8d | 2006-10-22 15:05:57 +1000 | [diff] [blame] | 419 | |
| 420 | .uinfo = { |
| 421 | .encr = { |
| 422 | .blockbits = 128, |
| 423 | .defkeybits = 128, |
| 424 | } |
| 425 | }, |
| 426 | |
| 427 | .desc = { |
| 428 | .sadb_alg_id = SADB_X_EALG_CAMELLIACBC, |
| 429 | .sadb_alg_ivlen = 8, |
| 430 | .sadb_alg_minbits = 128, |
| 431 | .sadb_alg_maxbits = 256 |
| 432 | } |
| 433 | }, |
| 434 | { |
YOSHIFUJI Hideaki | a716c11 | 2007-02-09 23:25:29 +0900 | [diff] [blame] | 435 | .name = "cbc(twofish)", |
| 436 | .compat = "twofish", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | |
YOSHIFUJI Hideaki | a716c11 | 2007-02-09 23:25:29 +0900 | [diff] [blame] | 438 | .uinfo = { |
| 439 | .encr = { |
| 440 | .blockbits = 128, |
| 441 | .defkeybits = 128, |
| 442 | } |
| 443 | }, |
| 444 | |
| 445 | .desc = { |
| 446 | .sadb_alg_id = SADB_X_EALG_TWOFISHCBC, |
| 447 | .sadb_alg_ivlen = 8, |
| 448 | .sadb_alg_minbits = 128, |
| 449 | .sadb_alg_maxbits = 256 |
| 450 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | }, |
Joy Latten | 405137d | 2008-02-07 23:11:56 -0800 | [diff] [blame] | 452 | { |
| 453 | .name = "rfc3686(ctr(aes))", |
| 454 | |
| 455 | .uinfo = { |
| 456 | .encr = { |
| 457 | .blockbits = 128, |
| 458 | .defkeybits = 160, /* 128-bit key + 32-bit nonce */ |
| 459 | } |
| 460 | }, |
| 461 | |
| 462 | .desc = { |
| 463 | .sadb_alg_id = SADB_X_EALG_AESCTR, |
| 464 | .sadb_alg_ivlen = 8, |
| 465 | .sadb_alg_minbits = 128, |
| 466 | .sadb_alg_maxbits = 256 |
| 467 | } |
| 468 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | }; |
| 470 | |
| 471 | static struct xfrm_algo_desc calg_list[] = { |
| 472 | { |
| 473 | .name = "deflate", |
| 474 | .uinfo = { |
| 475 | .comp = { |
| 476 | .threshold = 90, |
| 477 | } |
| 478 | }, |
| 479 | .desc = { .sadb_alg_id = SADB_X_CALG_DEFLATE } |
| 480 | }, |
| 481 | { |
| 482 | .name = "lzs", |
| 483 | .uinfo = { |
| 484 | .comp = { |
| 485 | .threshold = 90, |
| 486 | } |
| 487 | }, |
| 488 | .desc = { .sadb_alg_id = SADB_X_CALG_LZS } |
| 489 | }, |
| 490 | { |
| 491 | .name = "lzjh", |
| 492 | .uinfo = { |
| 493 | .comp = { |
| 494 | .threshold = 50, |
| 495 | } |
| 496 | }, |
| 497 | .desc = { .sadb_alg_id = SADB_X_CALG_LZJH } |
| 498 | }, |
| 499 | }; |
| 500 | |
Herbert Xu | 1a6509d | 2008-01-28 19:37:29 -0800 | [diff] [blame] | 501 | static inline int aead_entries(void) |
| 502 | { |
| 503 | return ARRAY_SIZE(aead_list); |
| 504 | } |
| 505 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | static inline int aalg_entries(void) |
| 507 | { |
| 508 | return ARRAY_SIZE(aalg_list); |
| 509 | } |
| 510 | |
| 511 | static inline int ealg_entries(void) |
| 512 | { |
| 513 | return ARRAY_SIZE(ealg_list); |
| 514 | } |
| 515 | |
| 516 | static inline int calg_entries(void) |
| 517 | { |
| 518 | return ARRAY_SIZE(calg_list); |
| 519 | } |
| 520 | |
Herbert Xu | c92b3a2 | 2007-05-19 14:21:18 -0700 | [diff] [blame] | 521 | struct xfrm_algo_list { |
| 522 | struct xfrm_algo_desc *algs; |
| 523 | int entries; |
| 524 | u32 type; |
| 525 | u32 mask; |
| 526 | }; |
| 527 | |
Herbert Xu | 1a6509d | 2008-01-28 19:37:29 -0800 | [diff] [blame] | 528 | static const struct xfrm_algo_list xfrm_aead_list = { |
| 529 | .algs = aead_list, |
| 530 | .entries = ARRAY_SIZE(aead_list), |
| 531 | .type = CRYPTO_ALG_TYPE_AEAD, |
| 532 | .mask = CRYPTO_ALG_TYPE_MASK, |
| 533 | }; |
| 534 | |
Herbert Xu | c92b3a2 | 2007-05-19 14:21:18 -0700 | [diff] [blame] | 535 | static const struct xfrm_algo_list xfrm_aalg_list = { |
| 536 | .algs = aalg_list, |
| 537 | .entries = ARRAY_SIZE(aalg_list), |
| 538 | .type = CRYPTO_ALG_TYPE_HASH, |
Herbert Xu | 6fbf2cb | 2008-01-28 19:35:49 -0800 | [diff] [blame] | 539 | .mask = CRYPTO_ALG_TYPE_HASH_MASK, |
Herbert Xu | c92b3a2 | 2007-05-19 14:21:18 -0700 | [diff] [blame] | 540 | }; |
| 541 | |
| 542 | static const struct xfrm_algo_list xfrm_ealg_list = { |
| 543 | .algs = ealg_list, |
| 544 | .entries = ARRAY_SIZE(ealg_list), |
| 545 | .type = CRYPTO_ALG_TYPE_BLKCIPHER, |
Herbert Xu | 6fbf2cb | 2008-01-28 19:35:49 -0800 | [diff] [blame] | 546 | .mask = CRYPTO_ALG_TYPE_BLKCIPHER_MASK, |
Herbert Xu | c92b3a2 | 2007-05-19 14:21:18 -0700 | [diff] [blame] | 547 | }; |
| 548 | |
| 549 | static const struct xfrm_algo_list xfrm_calg_list = { |
| 550 | .algs = calg_list, |
| 551 | .entries = ARRAY_SIZE(calg_list), |
| 552 | .type = CRYPTO_ALG_TYPE_COMPRESS, |
Herbert Xu | 6fbf2cb | 2008-01-28 19:35:49 -0800 | [diff] [blame] | 553 | .mask = CRYPTO_ALG_TYPE_MASK, |
Herbert Xu | c92b3a2 | 2007-05-19 14:21:18 -0700 | [diff] [blame] | 554 | }; |
| 555 | |
| 556 | static struct xfrm_algo_desc *xfrm_find_algo( |
| 557 | const struct xfrm_algo_list *algo_list, |
| 558 | int match(const struct xfrm_algo_desc *entry, const void *data), |
| 559 | const void *data, int probe) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | { |
Herbert Xu | c92b3a2 | 2007-05-19 14:21:18 -0700 | [diff] [blame] | 561 | struct xfrm_algo_desc *list = algo_list->algs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | int i, status; |
| 563 | |
Herbert Xu | c92b3a2 | 2007-05-19 14:21:18 -0700 | [diff] [blame] | 564 | for (i = 0; i < algo_list->entries; i++) { |
| 565 | if (!match(list + i, data)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | continue; |
| 567 | |
| 568 | if (list[i].available) |
| 569 | return &list[i]; |
| 570 | |
| 571 | if (!probe) |
| 572 | break; |
| 573 | |
Herbert Xu | c92b3a2 | 2007-05-19 14:21:18 -0700 | [diff] [blame] | 574 | status = crypto_has_alg(list[i].name, algo_list->type, |
| 575 | algo_list->mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | if (!status) |
| 577 | break; |
| 578 | |
| 579 | list[i].available = status; |
| 580 | return &list[i]; |
| 581 | } |
| 582 | return NULL; |
| 583 | } |
| 584 | |
Herbert Xu | c92b3a2 | 2007-05-19 14:21:18 -0700 | [diff] [blame] | 585 | static int xfrm_alg_id_match(const struct xfrm_algo_desc *entry, |
| 586 | const void *data) |
| 587 | { |
Herbert Xu | 26b8e51 | 2007-05-22 16:12:26 -0700 | [diff] [blame] | 588 | return entry->desc.sadb_alg_id == (unsigned long)data; |
Herbert Xu | c92b3a2 | 2007-05-19 14:21:18 -0700 | [diff] [blame] | 589 | } |
| 590 | |
| 591 | struct xfrm_algo_desc *xfrm_aalg_get_byid(int alg_id) |
| 592 | { |
| 593 | return xfrm_find_algo(&xfrm_aalg_list, xfrm_alg_id_match, |
Herbert Xu | 26b8e51 | 2007-05-22 16:12:26 -0700 | [diff] [blame] | 594 | (void *)(unsigned long)alg_id, 1); |
Herbert Xu | c92b3a2 | 2007-05-19 14:21:18 -0700 | [diff] [blame] | 595 | } |
| 596 | EXPORT_SYMBOL_GPL(xfrm_aalg_get_byid); |
| 597 | |
| 598 | struct xfrm_algo_desc *xfrm_ealg_get_byid(int alg_id) |
| 599 | { |
| 600 | return xfrm_find_algo(&xfrm_ealg_list, xfrm_alg_id_match, |
Herbert Xu | 26b8e51 | 2007-05-22 16:12:26 -0700 | [diff] [blame] | 601 | (void *)(unsigned long)alg_id, 1); |
Herbert Xu | c92b3a2 | 2007-05-19 14:21:18 -0700 | [diff] [blame] | 602 | } |
| 603 | EXPORT_SYMBOL_GPL(xfrm_ealg_get_byid); |
| 604 | |
| 605 | struct xfrm_algo_desc *xfrm_calg_get_byid(int alg_id) |
| 606 | { |
| 607 | return xfrm_find_algo(&xfrm_calg_list, xfrm_alg_id_match, |
Herbert Xu | 26b8e51 | 2007-05-22 16:12:26 -0700 | [diff] [blame] | 608 | (void *)(unsigned long)alg_id, 1); |
Herbert Xu | c92b3a2 | 2007-05-19 14:21:18 -0700 | [diff] [blame] | 609 | } |
| 610 | EXPORT_SYMBOL_GPL(xfrm_calg_get_byid); |
| 611 | |
| 612 | static int xfrm_alg_name_match(const struct xfrm_algo_desc *entry, |
| 613 | const void *data) |
| 614 | { |
| 615 | const char *name = data; |
| 616 | |
| 617 | return name && (!strcmp(name, entry->name) || |
| 618 | (entry->compat && !strcmp(name, entry->compat))); |
| 619 | } |
| 620 | |
David S. Miller | 6f2f19e | 2011-02-27 23:04:45 -0800 | [diff] [blame] | 621 | struct xfrm_algo_desc *xfrm_aalg_get_byname(const char *name, int probe) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | { |
Herbert Xu | c92b3a2 | 2007-05-19 14:21:18 -0700 | [diff] [blame] | 623 | return xfrm_find_algo(&xfrm_aalg_list, xfrm_alg_name_match, name, |
| 624 | probe); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | } |
| 626 | EXPORT_SYMBOL_GPL(xfrm_aalg_get_byname); |
| 627 | |
David S. Miller | 6f2f19e | 2011-02-27 23:04:45 -0800 | [diff] [blame] | 628 | struct xfrm_algo_desc *xfrm_ealg_get_byname(const char *name, int probe) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | { |
Herbert Xu | c92b3a2 | 2007-05-19 14:21:18 -0700 | [diff] [blame] | 630 | return xfrm_find_algo(&xfrm_ealg_list, xfrm_alg_name_match, name, |
| 631 | probe); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | } |
| 633 | EXPORT_SYMBOL_GPL(xfrm_ealg_get_byname); |
| 634 | |
David S. Miller | 6f2f19e | 2011-02-27 23:04:45 -0800 | [diff] [blame] | 635 | struct xfrm_algo_desc *xfrm_calg_get_byname(const char *name, int probe) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | { |
Herbert Xu | c92b3a2 | 2007-05-19 14:21:18 -0700 | [diff] [blame] | 637 | return xfrm_find_algo(&xfrm_calg_list, xfrm_alg_name_match, name, |
| 638 | probe); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | } |
| 640 | EXPORT_SYMBOL_GPL(xfrm_calg_get_byname); |
| 641 | |
Herbert Xu | 1a6509d | 2008-01-28 19:37:29 -0800 | [diff] [blame] | 642 | struct xfrm_aead_name { |
| 643 | const char *name; |
| 644 | int icvbits; |
| 645 | }; |
| 646 | |
| 647 | static int xfrm_aead_name_match(const struct xfrm_algo_desc *entry, |
| 648 | const void *data) |
| 649 | { |
| 650 | const struct xfrm_aead_name *aead = data; |
| 651 | const char *name = aead->name; |
| 652 | |
| 653 | return aead->icvbits == entry->uinfo.aead.icv_truncbits && name && |
| 654 | !strcmp(name, entry->name); |
| 655 | } |
| 656 | |
David S. Miller | 6f2f19e | 2011-02-27 23:04:45 -0800 | [diff] [blame] | 657 | struct xfrm_algo_desc *xfrm_aead_get_byname(const char *name, int icv_len, int probe) |
Herbert Xu | 1a6509d | 2008-01-28 19:37:29 -0800 | [diff] [blame] | 658 | { |
| 659 | struct xfrm_aead_name data = { |
| 660 | .name = name, |
| 661 | .icvbits = icv_len, |
| 662 | }; |
| 663 | |
| 664 | return xfrm_find_algo(&xfrm_aead_list, xfrm_aead_name_match, &data, |
| 665 | probe); |
| 666 | } |
| 667 | EXPORT_SYMBOL_GPL(xfrm_aead_get_byname); |
| 668 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | struct xfrm_algo_desc *xfrm_aalg_get_byidx(unsigned int idx) |
| 670 | { |
| 671 | if (idx >= aalg_entries()) |
| 672 | return NULL; |
| 673 | |
| 674 | return &aalg_list[idx]; |
| 675 | } |
| 676 | EXPORT_SYMBOL_GPL(xfrm_aalg_get_byidx); |
| 677 | |
| 678 | struct xfrm_algo_desc *xfrm_ealg_get_byidx(unsigned int idx) |
| 679 | { |
| 680 | if (idx >= ealg_entries()) |
| 681 | return NULL; |
| 682 | |
| 683 | return &ealg_list[idx]; |
| 684 | } |
| 685 | EXPORT_SYMBOL_GPL(xfrm_ealg_get_byidx); |
| 686 | |
| 687 | /* |
| 688 | * Probe for the availability of crypto algorithms, and set the available |
| 689 | * flag for any algorithms found on the system. This is typically called by |
| 690 | * pfkey during userspace SA add, update or register. |
| 691 | */ |
| 692 | void xfrm_probe_algs(void) |
| 693 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | int i, status; |
YOSHIFUJI Hideaki | a716c11 | 2007-02-09 23:25:29 +0900 | [diff] [blame] | 695 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | BUG_ON(in_softirq()); |
| 697 | |
| 698 | for (i = 0; i < aalg_entries(); i++) { |
Herbert Xu | e4d5b79 | 2006-08-26 18:12:40 +1000 | [diff] [blame] | 699 | status = crypto_has_hash(aalg_list[i].name, 0, |
| 700 | CRYPTO_ALG_ASYNC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | if (aalg_list[i].available != status) |
| 702 | aalg_list[i].available = status; |
| 703 | } |
YOSHIFUJI Hideaki | a716c11 | 2007-02-09 23:25:29 +0900 | [diff] [blame] | 704 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | for (i = 0; i < ealg_entries(); i++) { |
Herbert Xu | e4d5b79 | 2006-08-26 18:12:40 +1000 | [diff] [blame] | 706 | status = crypto_has_blkcipher(ealg_list[i].name, 0, |
| 707 | CRYPTO_ALG_ASYNC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | if (ealg_list[i].available != status) |
| 709 | ealg_list[i].available = status; |
| 710 | } |
YOSHIFUJI Hideaki | a716c11 | 2007-02-09 23:25:29 +0900 | [diff] [blame] | 711 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | for (i = 0; i < calg_entries(); i++) { |
Herbert Xu | e4d5b79 | 2006-08-26 18:12:40 +1000 | [diff] [blame] | 713 | status = crypto_has_comp(calg_list[i].name, 0, |
| 714 | CRYPTO_ALG_ASYNC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | if (calg_list[i].available != status) |
| 716 | calg_list[i].available = status; |
| 717 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 718 | } |
| 719 | EXPORT_SYMBOL_GPL(xfrm_probe_algs); |
| 720 | |
| 721 | int xfrm_count_auth_supported(void) |
| 722 | { |
| 723 | int i, n; |
| 724 | |
| 725 | for (i = 0, n = 0; i < aalg_entries(); i++) |
| 726 | if (aalg_list[i].available) |
| 727 | n++; |
| 728 | return n; |
| 729 | } |
| 730 | EXPORT_SYMBOL_GPL(xfrm_count_auth_supported); |
| 731 | |
| 732 | int xfrm_count_enc_supported(void) |
| 733 | { |
| 734 | int i, n; |
| 735 | |
| 736 | for (i = 0, n = 0; i < ealg_entries(); i++) |
| 737 | if (ealg_list[i].available) |
| 738 | n++; |
| 739 | return n; |
| 740 | } |
| 741 | EXPORT_SYMBOL_GPL(xfrm_count_enc_supported); |
| 742 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | #if defined(CONFIG_INET_ESP) || defined(CONFIG_INET_ESP_MODULE) || defined(CONFIG_INET6_ESP) || defined(CONFIG_INET6_ESP_MODULE) |
| 744 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | void *pskb_put(struct sk_buff *skb, struct sk_buff *tail, int len) |
| 746 | { |
| 747 | if (tail != skb) { |
| 748 | skb->data_len += len; |
| 749 | skb->len += len; |
| 750 | } |
| 751 | return skb_put(tail, len); |
| 752 | } |
| 753 | EXPORT_SYMBOL_GPL(pskb_put); |
| 754 | #endif |