Commit | Line | Data |
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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
a716c119 | 2 | /* |
1da177e4 LT |
3 | * xfrm algorithm interface |
4 | * | |
5 | * Copyright (c) 2002 James Morris <jmorris@intercode.com.au> | |
1da177e4 LT |
6 | */ |
7 | ||
17bc1970 HX |
8 | #include <crypto/hash.h> |
9 | #include <crypto/skcipher.h> | |
1da177e4 LT |
10 | #include <linux/module.h> |
11 | #include <linux/kernel.h> | |
12 | #include <linux/pfkeyv2.h> | |
13 | #include <linux/crypto.h> | |
b3b724f4 | 14 | #include <linux/scatterlist.h> |
1da177e4 | 15 | #include <net/xfrm.h> |
65b323e2 | 16 | #if IS_ENABLED(CONFIG_INET_ESP) || IS_ENABLED(CONFIG_INET6_ESP) |
1da177e4 LT |
17 | #include <net/esp.h> |
18 | #endif | |
1da177e4 LT |
19 | |
20 | /* | |
21 | * Algorithms supported by IPsec. These entries contain properties which | |
22 | * are used in key negotiation and xfrm processing, and are used to verify | |
23 | * that instantiated crypto transforms have correct parameters for IPsec | |
24 | * purposes. | |
25 | */ | |
1a6509d9 HX |
26 | static struct xfrm_algo_desc aead_list[] = { |
27 | { | |
28 | .name = "rfc4106(gcm(aes))", | |
29 | ||
30 | .uinfo = { | |
31 | .aead = { | |
de0ded77 | 32 | .geniv = "seqiv", |
1a6509d9 HX |
33 | .icv_truncbits = 64, |
34 | } | |
35 | }, | |
36 | ||
7e50f84c JK |
37 | .pfkey_supported = 1, |
38 | ||
1a6509d9 HX |
39 | .desc = { |
40 | .sadb_alg_id = SADB_X_EALG_AES_GCM_ICV8, | |
41 | .sadb_alg_ivlen = 8, | |
42 | .sadb_alg_minbits = 128, | |
43 | .sadb_alg_maxbits = 256 | |
44 | } | |
45 | }, | |
46 | { | |
47 | .name = "rfc4106(gcm(aes))", | |
48 | ||
49 | .uinfo = { | |
50 | .aead = { | |
de0ded77 | 51 | .geniv = "seqiv", |
1a6509d9 HX |
52 | .icv_truncbits = 96, |
53 | } | |
54 | }, | |
55 | ||
7e50f84c JK |
56 | .pfkey_supported = 1, |
57 | ||
1a6509d9 HX |
58 | .desc = { |
59 | .sadb_alg_id = SADB_X_EALG_AES_GCM_ICV12, | |
60 | .sadb_alg_ivlen = 8, | |
61 | .sadb_alg_minbits = 128, | |
62 | .sadb_alg_maxbits = 256 | |
63 | } | |
64 | }, | |
65 | { | |
66 | .name = "rfc4106(gcm(aes))", | |
67 | ||
68 | .uinfo = { | |
69 | .aead = { | |
de0ded77 | 70 | .geniv = "seqiv", |
1a6509d9 HX |
71 | .icv_truncbits = 128, |
72 | } | |
73 | }, | |
74 | ||
7e50f84c JK |
75 | .pfkey_supported = 1, |
76 | ||
1a6509d9 HX |
77 | .desc = { |
78 | .sadb_alg_id = SADB_X_EALG_AES_GCM_ICV16, | |
79 | .sadb_alg_ivlen = 8, | |
80 | .sadb_alg_minbits = 128, | |
81 | .sadb_alg_maxbits = 256 | |
82 | } | |
83 | }, | |
84 | { | |
85 | .name = "rfc4309(ccm(aes))", | |
86 | ||
87 | .uinfo = { | |
88 | .aead = { | |
de0ded77 | 89 | .geniv = "seqiv", |
1a6509d9 HX |
90 | .icv_truncbits = 64, |
91 | } | |
92 | }, | |
93 | ||
7e50f84c JK |
94 | .pfkey_supported = 1, |
95 | ||
1a6509d9 HX |
96 | .desc = { |
97 | .sadb_alg_id = SADB_X_EALG_AES_CCM_ICV8, | |
98 | .sadb_alg_ivlen = 8, | |
99 | .sadb_alg_minbits = 128, | |
100 | .sadb_alg_maxbits = 256 | |
101 | } | |
102 | }, | |
103 | { | |
104 | .name = "rfc4309(ccm(aes))", | |
105 | ||
106 | .uinfo = { | |
107 | .aead = { | |
de0ded77 | 108 | .geniv = "seqiv", |
1a6509d9 HX |
109 | .icv_truncbits = 96, |
110 | } | |
111 | }, | |
112 | ||
7e50f84c JK |
113 | .pfkey_supported = 1, |
114 | ||
1a6509d9 HX |
115 | .desc = { |
116 | .sadb_alg_id = SADB_X_EALG_AES_CCM_ICV12, | |
117 | .sadb_alg_ivlen = 8, | |
118 | .sadb_alg_minbits = 128, | |
119 | .sadb_alg_maxbits = 256 | |
120 | } | |
121 | }, | |
122 | { | |
123 | .name = "rfc4309(ccm(aes))", | |
124 | ||
125 | .uinfo = { | |
126 | .aead = { | |
de0ded77 | 127 | .geniv = "seqiv", |
1a6509d9 HX |
128 | .icv_truncbits = 128, |
129 | } | |
130 | }, | |
131 | ||
7e50f84c JK |
132 | .pfkey_supported = 1, |
133 | ||
1a6509d9 HX |
134 | .desc = { |
135 | .sadb_alg_id = SADB_X_EALG_AES_CCM_ICV16, | |
136 | .sadb_alg_ivlen = 8, | |
137 | .sadb_alg_minbits = 128, | |
138 | .sadb_alg_maxbits = 256 | |
139 | } | |
140 | }, | |
73c89c15 TB |
141 | { |
142 | .name = "rfc4543(gcm(aes))", | |
143 | ||
144 | .uinfo = { | |
145 | .aead = { | |
165ecc63 | 146 | .geniv = "seqiv", |
73c89c15 TB |
147 | .icv_truncbits = 128, |
148 | } | |
149 | }, | |
150 | ||
7e50f84c JK |
151 | .pfkey_supported = 1, |
152 | ||
73c89c15 TB |
153 | .desc = { |
154 | .sadb_alg_id = SADB_X_EALG_NULL_AES_GMAC, | |
155 | .sadb_alg_ivlen = 8, | |
156 | .sadb_alg_minbits = 128, | |
157 | .sadb_alg_maxbits = 256 | |
158 | } | |
159 | }, | |
b08b6b77 MW |
160 | { |
161 | .name = "rfc7539esp(chacha20,poly1305)", | |
162 | ||
163 | .uinfo = { | |
164 | .aead = { | |
de0ded77 | 165 | .geniv = "seqiv", |
b08b6b77 MW |
166 | .icv_truncbits = 128, |
167 | } | |
168 | }, | |
169 | ||
170 | .pfkey_supported = 0, | |
171 | }, | |
1a6509d9 HX |
172 | }; |
173 | ||
1da177e4 LT |
174 | static struct xfrm_algo_desc aalg_list[] = { |
175 | { | |
01a2202c | 176 | .name = "digest_null", |
a716c119 | 177 | |
1da177e4 LT |
178 | .uinfo = { |
179 | .auth = { | |
180 | .icv_truncbits = 0, | |
181 | .icv_fullbits = 0, | |
182 | } | |
183 | }, | |
a716c119 | 184 | |
7e50f84c JK |
185 | .pfkey_supported = 1, |
186 | ||
1da177e4 LT |
187 | .desc = { |
188 | .sadb_alg_id = SADB_X_AALG_NULL, | |
189 | .sadb_alg_ivlen = 0, | |
190 | .sadb_alg_minbits = 0, | |
191 | .sadb_alg_maxbits = 0 | |
192 | } | |
193 | }, | |
194 | { | |
07d4ee58 HX |
195 | .name = "hmac(md5)", |
196 | .compat = "md5", | |
1da177e4 LT |
197 | |
198 | .uinfo = { | |
199 | .auth = { | |
200 | .icv_truncbits = 96, | |
201 | .icv_fullbits = 128, | |
202 | } | |
203 | }, | |
a716c119 | 204 | |
7e50f84c JK |
205 | .pfkey_supported = 1, |
206 | ||
1da177e4 LT |
207 | .desc = { |
208 | .sadb_alg_id = SADB_AALG_MD5HMAC, | |
209 | .sadb_alg_ivlen = 0, | |
210 | .sadb_alg_minbits = 128, | |
211 | .sadb_alg_maxbits = 128 | |
212 | } | |
213 | }, | |
214 | { | |
07d4ee58 HX |
215 | .name = "hmac(sha1)", |
216 | .compat = "sha1", | |
1da177e4 LT |
217 | |
218 | .uinfo = { | |
219 | .auth = { | |
220 | .icv_truncbits = 96, | |
221 | .icv_fullbits = 160, | |
222 | } | |
223 | }, | |
224 | ||
7e50f84c JK |
225 | .pfkey_supported = 1, |
226 | ||
1da177e4 LT |
227 | .desc = { |
228 | .sadb_alg_id = SADB_AALG_SHA1HMAC, | |
229 | .sadb_alg_ivlen = 0, | |
230 | .sadb_alg_minbits = 160, | |
231 | .sadb_alg_maxbits = 160 | |
232 | } | |
233 | }, | |
234 | { | |
07d4ee58 HX |
235 | .name = "hmac(sha256)", |
236 | .compat = "sha256", | |
1da177e4 LT |
237 | |
238 | .uinfo = { | |
239 | .auth = { | |
240 | .icv_truncbits = 96, | |
241 | .icv_fullbits = 256, | |
242 | } | |
243 | }, | |
244 | ||
7e50f84c JK |
245 | .pfkey_supported = 1, |
246 | ||
1da177e4 LT |
247 | .desc = { |
248 | .sadb_alg_id = SADB_X_AALG_SHA2_256HMAC, | |
249 | .sadb_alg_ivlen = 0, | |
250 | .sadb_alg_minbits = 256, | |
251 | .sadb_alg_maxbits = 256 | |
252 | } | |
253 | }, | |
bc74b0c8 MW |
254 | { |
255 | .name = "hmac(sha384)", | |
256 | ||
257 | .uinfo = { | |
258 | .auth = { | |
259 | .icv_truncbits = 192, | |
260 | .icv_fullbits = 384, | |
261 | } | |
262 | }, | |
263 | ||
7e50f84c JK |
264 | .pfkey_supported = 1, |
265 | ||
bc74b0c8 MW |
266 | .desc = { |
267 | .sadb_alg_id = SADB_X_AALG_SHA2_384HMAC, | |
268 | .sadb_alg_ivlen = 0, | |
269 | .sadb_alg_minbits = 384, | |
270 | .sadb_alg_maxbits = 384 | |
271 | } | |
272 | }, | |
273 | { | |
274 | .name = "hmac(sha512)", | |
275 | ||
276 | .uinfo = { | |
277 | .auth = { | |
278 | .icv_truncbits = 256, | |
279 | .icv_fullbits = 512, | |
280 | } | |
281 | }, | |
282 | ||
7e50f84c JK |
283 | .pfkey_supported = 1, |
284 | ||
bc74b0c8 MW |
285 | .desc = { |
286 | .sadb_alg_id = SADB_X_AALG_SHA2_512HMAC, | |
287 | .sadb_alg_ivlen = 0, | |
288 | .sadb_alg_minbits = 512, | |
289 | .sadb_alg_maxbits = 512 | |
290 | } | |
291 | }, | |
1da177e4 | 292 | { |
a13366c6 AKR |
293 | .name = "hmac(rmd160)", |
294 | .compat = "rmd160", | |
1da177e4 LT |
295 | |
296 | .uinfo = { | |
297 | .auth = { | |
298 | .icv_truncbits = 96, | |
299 | .icv_fullbits = 160, | |
300 | } | |
301 | }, | |
302 | ||
7e50f84c JK |
303 | .pfkey_supported = 1, |
304 | ||
1da177e4 LT |
305 | .desc = { |
306 | .sadb_alg_id = SADB_X_AALG_RIPEMD160HMAC, | |
307 | .sadb_alg_ivlen = 0, | |
308 | .sadb_alg_minbits = 160, | |
309 | .sadb_alg_maxbits = 160 | |
310 | } | |
311 | }, | |
7cf4c1a5 KM |
312 | { |
313 | .name = "xcbc(aes)", | |
314 | ||
315 | .uinfo = { | |
316 | .auth = { | |
317 | .icv_truncbits = 96, | |
318 | .icv_fullbits = 128, | |
319 | } | |
320 | }, | |
321 | ||
7e50f84c JK |
322 | .pfkey_supported = 1, |
323 | ||
7cf4c1a5 KM |
324 | .desc = { |
325 | .sadb_alg_id = SADB_X_AALG_AES_XCBC_MAC, | |
326 | .sadb_alg_ivlen = 0, | |
327 | .sadb_alg_minbits = 128, | |
328 | .sadb_alg_maxbits = 128 | |
329 | } | |
330 | }, | |
d2049d85 JK |
331 | { |
332 | /* rfc4494 */ | |
333 | .name = "cmac(aes)", | |
334 | ||
335 | .uinfo = { | |
336 | .auth = { | |
337 | .icv_truncbits = 96, | |
338 | .icv_fullbits = 128, | |
339 | } | |
340 | }, | |
341 | ||
342 | .pfkey_supported = 0, | |
343 | }, | |
e6911aff XJ |
344 | { |
345 | .name = "hmac(sm3)", | |
346 | .compat = "sm3", | |
347 | ||
348 | .uinfo = { | |
349 | .auth = { | |
350 | .icv_truncbits = 256, | |
351 | .icv_fullbits = 256, | |
352 | } | |
353 | }, | |
354 | ||
355 | .pfkey_supported = 1, | |
356 | ||
357 | .desc = { | |
358 | .sadb_alg_id = SADB_X_AALG_SM3_256HMAC, | |
359 | .sadb_alg_ivlen = 0, | |
360 | .sadb_alg_minbits = 256, | |
361 | .sadb_alg_maxbits = 256 | |
362 | } | |
363 | }, | |
1da177e4 LT |
364 | }; |
365 | ||
366 | static struct xfrm_algo_desc ealg_list[] = { | |
367 | { | |
6b7326c8 HX |
368 | .name = "ecb(cipher_null)", |
369 | .compat = "cipher_null", | |
a716c119 | 370 | |
1da177e4 LT |
371 | .uinfo = { |
372 | .encr = { | |
373 | .blockbits = 8, | |
374 | .defkeybits = 0, | |
375 | } | |
376 | }, | |
a716c119 | 377 | |
7e50f84c JK |
378 | .pfkey_supported = 1, |
379 | ||
1da177e4 LT |
380 | .desc = { |
381 | .sadb_alg_id = SADB_EALG_NULL, | |
382 | .sadb_alg_ivlen = 0, | |
383 | .sadb_alg_minbits = 0, | |
384 | .sadb_alg_maxbits = 0 | |
385 | } | |
386 | }, | |
387 | { | |
6b7326c8 HX |
388 | .name = "cbc(des)", |
389 | .compat = "des", | |
1da177e4 LT |
390 | |
391 | .uinfo = { | |
392 | .encr = { | |
165ecc63 | 393 | .geniv = "echainiv", |
1da177e4 LT |
394 | .blockbits = 64, |
395 | .defkeybits = 64, | |
396 | } | |
397 | }, | |
398 | ||
7e50f84c JK |
399 | .pfkey_supported = 1, |
400 | ||
1da177e4 LT |
401 | .desc = { |
402 | .sadb_alg_id = SADB_EALG_DESCBC, | |
403 | .sadb_alg_ivlen = 8, | |
404 | .sadb_alg_minbits = 64, | |
405 | .sadb_alg_maxbits = 64 | |
406 | } | |
407 | }, | |
408 | { | |
6b7326c8 HX |
409 | .name = "cbc(des3_ede)", |
410 | .compat = "des3_ede", | |
1da177e4 LT |
411 | |
412 | .uinfo = { | |
413 | .encr = { | |
165ecc63 | 414 | .geniv = "echainiv", |
1da177e4 LT |
415 | .blockbits = 64, |
416 | .defkeybits = 192, | |
417 | } | |
418 | }, | |
419 | ||
7e50f84c JK |
420 | .pfkey_supported = 1, |
421 | ||
1da177e4 LT |
422 | .desc = { |
423 | .sadb_alg_id = SADB_EALG_3DESCBC, | |
424 | .sadb_alg_ivlen = 8, | |
425 | .sadb_alg_minbits = 192, | |
426 | .sadb_alg_maxbits = 192 | |
427 | } | |
428 | }, | |
429 | { | |
245acb87 HX |
430 | .name = "cbc(cast5)", |
431 | .compat = "cast5", | |
1da177e4 LT |
432 | |
433 | .uinfo = { | |
434 | .encr = { | |
165ecc63 | 435 | .geniv = "echainiv", |
1da177e4 LT |
436 | .blockbits = 64, |
437 | .defkeybits = 128, | |
438 | } | |
439 | }, | |
440 | ||
7e50f84c JK |
441 | .pfkey_supported = 1, |
442 | ||
1da177e4 LT |
443 | .desc = { |
444 | .sadb_alg_id = SADB_X_EALG_CASTCBC, | |
445 | .sadb_alg_ivlen = 8, | |
446 | .sadb_alg_minbits = 40, | |
447 | .sadb_alg_maxbits = 128 | |
448 | } | |
449 | }, | |
450 | { | |
6b7326c8 HX |
451 | .name = "cbc(blowfish)", |
452 | .compat = "blowfish", | |
1da177e4 LT |
453 | |
454 | .uinfo = { | |
455 | .encr = { | |
165ecc63 | 456 | .geniv = "echainiv", |
1da177e4 LT |
457 | .blockbits = 64, |
458 | .defkeybits = 128, | |
459 | } | |
460 | }, | |
461 | ||
7e50f84c JK |
462 | .pfkey_supported = 1, |
463 | ||
1da177e4 LT |
464 | .desc = { |
465 | .sadb_alg_id = SADB_X_EALG_BLOWFISHCBC, | |
466 | .sadb_alg_ivlen = 8, | |
467 | .sadb_alg_minbits = 40, | |
468 | .sadb_alg_maxbits = 448 | |
469 | } | |
470 | }, | |
471 | { | |
6b7326c8 HX |
472 | .name = "cbc(aes)", |
473 | .compat = "aes", | |
1da177e4 LT |
474 | |
475 | .uinfo = { | |
476 | .encr = { | |
165ecc63 | 477 | .geniv = "echainiv", |
1da177e4 LT |
478 | .blockbits = 128, |
479 | .defkeybits = 128, | |
480 | } | |
481 | }, | |
482 | ||
7e50f84c JK |
483 | .pfkey_supported = 1, |
484 | ||
1da177e4 LT |
485 | .desc = { |
486 | .sadb_alg_id = SADB_X_EALG_AESCBC, | |
487 | .sadb_alg_ivlen = 8, | |
488 | .sadb_alg_minbits = 128, | |
489 | .sadb_alg_maxbits = 256 | |
490 | } | |
491 | }, | |
492 | { | |
a716c119 YH |
493 | .name = "cbc(serpent)", |
494 | .compat = "serpent", | |
495 | ||
496 | .uinfo = { | |
497 | .encr = { | |
165ecc63 | 498 | .geniv = "echainiv", |
a716c119 YH |
499 | .blockbits = 128, |
500 | .defkeybits = 128, | |
501 | } | |
502 | }, | |
503 | ||
7e50f84c JK |
504 | .pfkey_supported = 1, |
505 | ||
a716c119 YH |
506 | .desc = { |
507 | .sadb_alg_id = SADB_X_EALG_SERPENTCBC, | |
508 | .sadb_alg_ivlen = 8, | |
509 | .sadb_alg_minbits = 128, | |
510 | .sadb_alg_maxbits = 256, | |
511 | } | |
1da177e4 | 512 | }, |
6a0dc8d7 NT |
513 | { |
514 | .name = "cbc(camellia)", | |
138f3c85 | 515 | .compat = "camellia", |
6a0dc8d7 NT |
516 | |
517 | .uinfo = { | |
518 | .encr = { | |
165ecc63 | 519 | .geniv = "echainiv", |
6a0dc8d7 NT |
520 | .blockbits = 128, |
521 | .defkeybits = 128, | |
522 | } | |
523 | }, | |
524 | ||
7e50f84c JK |
525 | .pfkey_supported = 1, |
526 | ||
6a0dc8d7 NT |
527 | .desc = { |
528 | .sadb_alg_id = SADB_X_EALG_CAMELLIACBC, | |
529 | .sadb_alg_ivlen = 8, | |
530 | .sadb_alg_minbits = 128, | |
531 | .sadb_alg_maxbits = 256 | |
532 | } | |
533 | }, | |
1da177e4 | 534 | { |
a716c119 YH |
535 | .name = "cbc(twofish)", |
536 | .compat = "twofish", | |
537 | ||
538 | .uinfo = { | |
539 | .encr = { | |
165ecc63 | 540 | .geniv = "echainiv", |
a716c119 YH |
541 | .blockbits = 128, |
542 | .defkeybits = 128, | |
543 | } | |
544 | }, | |
545 | ||
7e50f84c JK |
546 | .pfkey_supported = 1, |
547 | ||
a716c119 YH |
548 | .desc = { |
549 | .sadb_alg_id = SADB_X_EALG_TWOFISHCBC, | |
550 | .sadb_alg_ivlen = 8, | |
551 | .sadb_alg_minbits = 128, | |
552 | .sadb_alg_maxbits = 256 | |
553 | } | |
1da177e4 | 554 | }, |
405137d1 JL |
555 | { |
556 | .name = "rfc3686(ctr(aes))", | |
557 | ||
558 | .uinfo = { | |
559 | .encr = { | |
165ecc63 | 560 | .geniv = "seqiv", |
405137d1 JL |
561 | .blockbits = 128, |
562 | .defkeybits = 160, /* 128-bit key + 32-bit nonce */ | |
563 | } | |
564 | }, | |
565 | ||
7e50f84c JK |
566 | .pfkey_supported = 1, |
567 | ||
405137d1 JL |
568 | .desc = { |
569 | .sadb_alg_id = SADB_X_EALG_AESCTR, | |
570 | .sadb_alg_ivlen = 8, | |
4203223a TG |
571 | .sadb_alg_minbits = 160, |
572 | .sadb_alg_maxbits = 288 | |
405137d1 JL |
573 | } |
574 | }, | |
23b6a6df XJ |
575 | { |
576 | .name = "cbc(sm4)", | |
577 | .compat = "sm4", | |
578 | ||
579 | .uinfo = { | |
580 | .encr = { | |
581 | .geniv = "echainiv", | |
582 | .blockbits = 128, | |
583 | .defkeybits = 128, | |
584 | } | |
585 | }, | |
586 | ||
587 | .pfkey_supported = 1, | |
588 | ||
589 | .desc = { | |
590 | .sadb_alg_id = SADB_X_EALG_SM4CBC, | |
591 | .sadb_alg_ivlen = 16, | |
592 | .sadb_alg_minbits = 128, | |
593 | .sadb_alg_maxbits = 256 | |
594 | } | |
595 | }, | |
1da177e4 LT |
596 | }; |
597 | ||
598 | static struct xfrm_algo_desc calg_list[] = { | |
599 | { | |
600 | .name = "deflate", | |
601 | .uinfo = { | |
602 | .comp = { | |
603 | .threshold = 90, | |
604 | } | |
605 | }, | |
7e50f84c | 606 | .pfkey_supported = 1, |
1da177e4 LT |
607 | .desc = { .sadb_alg_id = SADB_X_CALG_DEFLATE } |
608 | }, | |
609 | { | |
610 | .name = "lzs", | |
611 | .uinfo = { | |
612 | .comp = { | |
613 | .threshold = 90, | |
614 | } | |
615 | }, | |
7e50f84c | 616 | .pfkey_supported = 1, |
1da177e4 LT |
617 | .desc = { .sadb_alg_id = SADB_X_CALG_LZS } |
618 | }, | |
619 | { | |
620 | .name = "lzjh", | |
621 | .uinfo = { | |
622 | .comp = { | |
623 | .threshold = 50, | |
624 | } | |
625 | }, | |
7e50f84c | 626 | .pfkey_supported = 1, |
1da177e4 LT |
627 | .desc = { .sadb_alg_id = SADB_X_CALG_LZJH } |
628 | }, | |
629 | }; | |
630 | ||
631 | static inline int aalg_entries(void) | |
632 | { | |
633 | return ARRAY_SIZE(aalg_list); | |
634 | } | |
635 | ||
636 | static inline int ealg_entries(void) | |
637 | { | |
638 | return ARRAY_SIZE(ealg_list); | |
639 | } | |
640 | ||
641 | static inline int calg_entries(void) | |
642 | { | |
643 | return ARRAY_SIZE(calg_list); | |
644 | } | |
645 | ||
c92b3a2f HX |
646 | struct xfrm_algo_list { |
647 | struct xfrm_algo_desc *algs; | |
648 | int entries; | |
649 | u32 type; | |
650 | u32 mask; | |
651 | }; | |
1da177e4 | 652 | |
1a6509d9 HX |
653 | static const struct xfrm_algo_list xfrm_aead_list = { |
654 | .algs = aead_list, | |
655 | .entries = ARRAY_SIZE(aead_list), | |
656 | .type = CRYPTO_ALG_TYPE_AEAD, | |
657 | .mask = CRYPTO_ALG_TYPE_MASK, | |
658 | }; | |
659 | ||
c92b3a2f HX |
660 | static const struct xfrm_algo_list xfrm_aalg_list = { |
661 | .algs = aalg_list, | |
662 | .entries = ARRAY_SIZE(aalg_list), | |
663 | .type = CRYPTO_ALG_TYPE_HASH, | |
6fbf2cb7 | 664 | .mask = CRYPTO_ALG_TYPE_HASH_MASK, |
c92b3a2f | 665 | }; |
1da177e4 | 666 | |
c92b3a2f HX |
667 | static const struct xfrm_algo_list xfrm_ealg_list = { |
668 | .algs = ealg_list, | |
669 | .entries = ARRAY_SIZE(ealg_list), | |
c65058b7 EB |
670 | .type = CRYPTO_ALG_TYPE_SKCIPHER, |
671 | .mask = CRYPTO_ALG_TYPE_MASK, | |
c92b3a2f | 672 | }; |
1da177e4 | 673 | |
c92b3a2f HX |
674 | static const struct xfrm_algo_list xfrm_calg_list = { |
675 | .algs = calg_list, | |
676 | .entries = ARRAY_SIZE(calg_list), | |
677 | .type = CRYPTO_ALG_TYPE_COMPRESS, | |
6fbf2cb7 | 678 | .mask = CRYPTO_ALG_TYPE_MASK, |
c92b3a2f | 679 | }; |
1da177e4 | 680 | |
c92b3a2f HX |
681 | static struct xfrm_algo_desc *xfrm_find_algo( |
682 | const struct xfrm_algo_list *algo_list, | |
683 | int match(const struct xfrm_algo_desc *entry, const void *data), | |
684 | const void *data, int probe) | |
1da177e4 | 685 | { |
c92b3a2f | 686 | struct xfrm_algo_desc *list = algo_list->algs; |
1da177e4 LT |
687 | int i, status; |
688 | ||
c92b3a2f HX |
689 | for (i = 0; i < algo_list->entries; i++) { |
690 | if (!match(list + i, data)) | |
1da177e4 LT |
691 | continue; |
692 | ||
693 | if (list[i].available) | |
694 | return &list[i]; | |
695 | ||
696 | if (!probe) | |
697 | break; | |
698 | ||
c92b3a2f HX |
699 | status = crypto_has_alg(list[i].name, algo_list->type, |
700 | algo_list->mask); | |
1da177e4 LT |
701 | if (!status) |
702 | break; | |
703 | ||
704 | list[i].available = status; | |
705 | return &list[i]; | |
706 | } | |
707 | return NULL; | |
708 | } | |
709 | ||
c92b3a2f HX |
710 | static int xfrm_alg_id_match(const struct xfrm_algo_desc *entry, |
711 | const void *data) | |
712 | { | |
26b8e51e | 713 | return entry->desc.sadb_alg_id == (unsigned long)data; |
c92b3a2f HX |
714 | } |
715 | ||
716 | struct xfrm_algo_desc *xfrm_aalg_get_byid(int alg_id) | |
717 | { | |
718 | return xfrm_find_algo(&xfrm_aalg_list, xfrm_alg_id_match, | |
26b8e51e | 719 | (void *)(unsigned long)alg_id, 1); |
c92b3a2f HX |
720 | } |
721 | EXPORT_SYMBOL_GPL(xfrm_aalg_get_byid); | |
722 | ||
723 | struct xfrm_algo_desc *xfrm_ealg_get_byid(int alg_id) | |
724 | { | |
725 | return xfrm_find_algo(&xfrm_ealg_list, xfrm_alg_id_match, | |
26b8e51e | 726 | (void *)(unsigned long)alg_id, 1); |
c92b3a2f HX |
727 | } |
728 | EXPORT_SYMBOL_GPL(xfrm_ealg_get_byid); | |
729 | ||
730 | struct xfrm_algo_desc *xfrm_calg_get_byid(int alg_id) | |
731 | { | |
732 | return xfrm_find_algo(&xfrm_calg_list, xfrm_alg_id_match, | |
26b8e51e | 733 | (void *)(unsigned long)alg_id, 1); |
c92b3a2f HX |
734 | } |
735 | EXPORT_SYMBOL_GPL(xfrm_calg_get_byid); | |
736 | ||
737 | static int xfrm_alg_name_match(const struct xfrm_algo_desc *entry, | |
738 | const void *data) | |
739 | { | |
740 | const char *name = data; | |
741 | ||
742 | return name && (!strcmp(name, entry->name) || | |
743 | (entry->compat && !strcmp(name, entry->compat))); | |
744 | } | |
745 | ||
6f2f19ed | 746 | struct xfrm_algo_desc *xfrm_aalg_get_byname(const char *name, int probe) |
1da177e4 | 747 | { |
c92b3a2f HX |
748 | return xfrm_find_algo(&xfrm_aalg_list, xfrm_alg_name_match, name, |
749 | probe); | |
1da177e4 LT |
750 | } |
751 | EXPORT_SYMBOL_GPL(xfrm_aalg_get_byname); | |
752 | ||
6f2f19ed | 753 | struct xfrm_algo_desc *xfrm_ealg_get_byname(const char *name, int probe) |
1da177e4 | 754 | { |
c92b3a2f HX |
755 | return xfrm_find_algo(&xfrm_ealg_list, xfrm_alg_name_match, name, |
756 | probe); | |
1da177e4 LT |
757 | } |
758 | EXPORT_SYMBOL_GPL(xfrm_ealg_get_byname); | |
759 | ||
6f2f19ed | 760 | struct xfrm_algo_desc *xfrm_calg_get_byname(const char *name, int probe) |
1da177e4 | 761 | { |
c92b3a2f HX |
762 | return xfrm_find_algo(&xfrm_calg_list, xfrm_alg_name_match, name, |
763 | probe); | |
1da177e4 LT |
764 | } |
765 | EXPORT_SYMBOL_GPL(xfrm_calg_get_byname); | |
766 | ||
1a6509d9 HX |
767 | struct xfrm_aead_name { |
768 | const char *name; | |
769 | int icvbits; | |
770 | }; | |
771 | ||
772 | static int xfrm_aead_name_match(const struct xfrm_algo_desc *entry, | |
773 | const void *data) | |
774 | { | |
775 | const struct xfrm_aead_name *aead = data; | |
776 | const char *name = aead->name; | |
777 | ||
778 | return aead->icvbits == entry->uinfo.aead.icv_truncbits && name && | |
779 | !strcmp(name, entry->name); | |
780 | } | |
781 | ||
6f2f19ed | 782 | struct xfrm_algo_desc *xfrm_aead_get_byname(const char *name, int icv_len, int probe) |
1a6509d9 HX |
783 | { |
784 | struct xfrm_aead_name data = { | |
785 | .name = name, | |
786 | .icvbits = icv_len, | |
787 | }; | |
788 | ||
789 | return xfrm_find_algo(&xfrm_aead_list, xfrm_aead_name_match, &data, | |
790 | probe); | |
791 | } | |
792 | EXPORT_SYMBOL_GPL(xfrm_aead_get_byname); | |
793 | ||
1da177e4 LT |
794 | struct xfrm_algo_desc *xfrm_aalg_get_byidx(unsigned int idx) |
795 | { | |
796 | if (idx >= aalg_entries()) | |
797 | return NULL; | |
798 | ||
799 | return &aalg_list[idx]; | |
800 | } | |
801 | EXPORT_SYMBOL_GPL(xfrm_aalg_get_byidx); | |
802 | ||
803 | struct xfrm_algo_desc *xfrm_ealg_get_byidx(unsigned int idx) | |
804 | { | |
805 | if (idx >= ealg_entries()) | |
806 | return NULL; | |
807 | ||
808 | return &ealg_list[idx]; | |
809 | } | |
810 | EXPORT_SYMBOL_GPL(xfrm_ealg_get_byidx); | |
811 | ||
812 | /* | |
813 | * Probe for the availability of crypto algorithms, and set the available | |
814 | * flag for any algorithms found on the system. This is typically called by | |
815 | * pfkey during userspace SA add, update or register. | |
816 | */ | |
817 | void xfrm_probe_algs(void) | |
818 | { | |
1da177e4 | 819 | int i, status; |
a716c119 | 820 | |
1da177e4 LT |
821 | BUG_ON(in_softirq()); |
822 | ||
823 | for (i = 0; i < aalg_entries(); i++) { | |
17bc1970 | 824 | status = crypto_has_ahash(aalg_list[i].name, 0, 0); |
1da177e4 LT |
825 | if (aalg_list[i].available != status) |
826 | aalg_list[i].available = status; | |
827 | } | |
a716c119 | 828 | |
1da177e4 | 829 | for (i = 0; i < ealg_entries(); i++) { |
17bc1970 | 830 | status = crypto_has_skcipher(ealg_list[i].name, 0, 0); |
1da177e4 LT |
831 | if (ealg_list[i].available != status) |
832 | ealg_list[i].available = status; | |
833 | } | |
a716c119 | 834 | |
1da177e4 | 835 | for (i = 0; i < calg_entries(); i++) { |
e4d5b79c HX |
836 | status = crypto_has_comp(calg_list[i].name, 0, |
837 | CRYPTO_ALG_ASYNC); | |
1da177e4 LT |
838 | if (calg_list[i].available != status) |
839 | calg_list[i].available = status; | |
840 | } | |
1da177e4 LT |
841 | } |
842 | EXPORT_SYMBOL_GPL(xfrm_probe_algs); | |
843 | ||
7e50f84c | 844 | int xfrm_count_pfkey_auth_supported(void) |
1da177e4 LT |
845 | { |
846 | int i, n; | |
847 | ||
848 | for (i = 0, n = 0; i < aalg_entries(); i++) | |
7e50f84c | 849 | if (aalg_list[i].available && aalg_list[i].pfkey_supported) |
1da177e4 LT |
850 | n++; |
851 | return n; | |
852 | } | |
7e50f84c | 853 | EXPORT_SYMBOL_GPL(xfrm_count_pfkey_auth_supported); |
1da177e4 | 854 | |
7e50f84c | 855 | int xfrm_count_pfkey_enc_supported(void) |
1da177e4 LT |
856 | { |
857 | int i, n; | |
858 | ||
859 | for (i = 0, n = 0; i < ealg_entries(); i++) | |
7e50f84c | 860 | if (ealg_list[i].available && ealg_list[i].pfkey_supported) |
1da177e4 LT |
861 | n++; |
862 | return n; | |
863 | } | |
7e50f84c | 864 | EXPORT_SYMBOL_GPL(xfrm_count_pfkey_enc_supported); |
1da177e4 | 865 | |
7e152524 | 866 | MODULE_LICENSE("GPL"); |