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56d76c96 JK |
1 | /* |
2 | * Glue Code for x86_64/AVX2 assembler optimized version of Serpent | |
3 | * | |
4 | * Copyright © 2012-2013 Jussi Kivilinna <jussi.kivilinna@mbnet.fi> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/types.h> | |
15 | #include <linux/crypto.h> | |
16 | #include <linux/err.h> | |
801201aa | 17 | #include <crypto/ablk_helper.h> |
56d76c96 JK |
18 | #include <crypto/algapi.h> |
19 | #include <crypto/ctr.h> | |
20 | #include <crypto/lrw.h> | |
21 | #include <crypto/xts.h> | |
22 | #include <crypto/serpent.h> | |
534ff06e | 23 | #include <asm/fpu/api.h> |
56d76c96 | 24 | #include <asm/crypto/serpent-avx.h> |
56d76c96 JK |
25 | #include <asm/crypto/glue_helper.h> |
26 | ||
27 | #define SERPENT_AVX2_PARALLEL_BLOCKS 16 | |
28 | ||
29 | /* 16-way AVX2 parallel cipher functions */ | |
30 | asmlinkage void serpent_ecb_enc_16way(struct serpent_ctx *ctx, u8 *dst, | |
31 | const u8 *src); | |
32 | asmlinkage void serpent_ecb_dec_16way(struct serpent_ctx *ctx, u8 *dst, | |
33 | const u8 *src); | |
34 | asmlinkage void serpent_cbc_dec_16way(void *ctx, u128 *dst, const u128 *src); | |
35 | ||
36 | asmlinkage void serpent_ctr_16way(void *ctx, u128 *dst, const u128 *src, | |
37 | le128 *iv); | |
38 | asmlinkage void serpent_xts_enc_16way(struct serpent_ctx *ctx, u8 *dst, | |
39 | const u8 *src, le128 *iv); | |
40 | asmlinkage void serpent_xts_dec_16way(struct serpent_ctx *ctx, u8 *dst, | |
41 | const u8 *src, le128 *iv); | |
42 | ||
43 | static const struct common_glue_ctx serpent_enc = { | |
44 | .num_funcs = 3, | |
45 | .fpu_blocks_limit = 8, | |
46 | ||
47 | .funcs = { { | |
48 | .num_blocks = 16, | |
49 | .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_enc_16way) } | |
50 | }, { | |
51 | .num_blocks = 8, | |
52 | .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_enc_8way_avx) } | |
53 | }, { | |
54 | .num_blocks = 1, | |
55 | .fn_u = { .ecb = GLUE_FUNC_CAST(__serpent_encrypt) } | |
56 | } } | |
57 | }; | |
58 | ||
59 | static const struct common_glue_ctx serpent_ctr = { | |
60 | .num_funcs = 3, | |
61 | .fpu_blocks_limit = 8, | |
62 | ||
63 | .funcs = { { | |
64 | .num_blocks = 16, | |
65 | .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(serpent_ctr_16way) } | |
66 | }, { | |
67 | .num_blocks = 8, | |
68 | .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(serpent_ctr_8way_avx) } | |
69 | }, { | |
70 | .num_blocks = 1, | |
71 | .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(__serpent_crypt_ctr) } | |
72 | } } | |
73 | }; | |
74 | ||
75 | static const struct common_glue_ctx serpent_enc_xts = { | |
76 | .num_funcs = 3, | |
77 | .fpu_blocks_limit = 8, | |
78 | ||
79 | .funcs = { { | |
80 | .num_blocks = 16, | |
81 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_enc_16way) } | |
82 | }, { | |
83 | .num_blocks = 8, | |
84 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_enc_8way_avx) } | |
85 | }, { | |
86 | .num_blocks = 1, | |
87 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_enc) } | |
88 | } } | |
89 | }; | |
90 | ||
91 | static const struct common_glue_ctx serpent_dec = { | |
92 | .num_funcs = 3, | |
93 | .fpu_blocks_limit = 8, | |
94 | ||
95 | .funcs = { { | |
96 | .num_blocks = 16, | |
97 | .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_dec_16way) } | |
98 | }, { | |
99 | .num_blocks = 8, | |
100 | .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_dec_8way_avx) } | |
101 | }, { | |
102 | .num_blocks = 1, | |
103 | .fn_u = { .ecb = GLUE_FUNC_CAST(__serpent_decrypt) } | |
104 | } } | |
105 | }; | |
106 | ||
107 | static const struct common_glue_ctx serpent_dec_cbc = { | |
108 | .num_funcs = 3, | |
109 | .fpu_blocks_limit = 8, | |
110 | ||
111 | .funcs = { { | |
112 | .num_blocks = 16, | |
113 | .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(serpent_cbc_dec_16way) } | |
114 | }, { | |
115 | .num_blocks = 8, | |
116 | .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(serpent_cbc_dec_8way_avx) } | |
117 | }, { | |
118 | .num_blocks = 1, | |
119 | .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(__serpent_decrypt) } | |
120 | } } | |
121 | }; | |
122 | ||
123 | static const struct common_glue_ctx serpent_dec_xts = { | |
124 | .num_funcs = 3, | |
125 | .fpu_blocks_limit = 8, | |
126 | ||
127 | .funcs = { { | |
128 | .num_blocks = 16, | |
129 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_dec_16way) } | |
130 | }, { | |
131 | .num_blocks = 8, | |
132 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_dec_8way_avx) } | |
133 | }, { | |
134 | .num_blocks = 1, | |
135 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_dec) } | |
136 | } } | |
137 | }; | |
138 | ||
139 | static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
140 | struct scatterlist *src, unsigned int nbytes) | |
141 | { | |
142 | return glue_ecb_crypt_128bit(&serpent_enc, desc, dst, src, nbytes); | |
143 | } | |
144 | ||
145 | static int ecb_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
146 | struct scatterlist *src, unsigned int nbytes) | |
147 | { | |
148 | return glue_ecb_crypt_128bit(&serpent_dec, desc, dst, src, nbytes); | |
149 | } | |
150 | ||
151 | static int cbc_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
152 | struct scatterlist *src, unsigned int nbytes) | |
153 | { | |
154 | return glue_cbc_encrypt_128bit(GLUE_FUNC_CAST(__serpent_encrypt), desc, | |
155 | dst, src, nbytes); | |
156 | } | |
157 | ||
158 | static int cbc_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
159 | struct scatterlist *src, unsigned int nbytes) | |
160 | { | |
161 | return glue_cbc_decrypt_128bit(&serpent_dec_cbc, desc, dst, src, | |
162 | nbytes); | |
163 | } | |
164 | ||
165 | static int ctr_crypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
166 | struct scatterlist *src, unsigned int nbytes) | |
167 | { | |
168 | return glue_ctr_crypt_128bit(&serpent_ctr, desc, dst, src, nbytes); | |
169 | } | |
170 | ||
171 | static inline bool serpent_fpu_begin(bool fpu_enabled, unsigned int nbytes) | |
172 | { | |
173 | /* since reusing AVX functions, starts using FPU at 8 parallel blocks */ | |
174 | return glue_fpu_begin(SERPENT_BLOCK_SIZE, 8, NULL, fpu_enabled, nbytes); | |
175 | } | |
176 | ||
177 | static inline void serpent_fpu_end(bool fpu_enabled) | |
178 | { | |
179 | glue_fpu_end(fpu_enabled); | |
180 | } | |
181 | ||
182 | struct crypt_priv { | |
183 | struct serpent_ctx *ctx; | |
184 | bool fpu_enabled; | |
185 | }; | |
186 | ||
187 | static void encrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) | |
188 | { | |
189 | const unsigned int bsize = SERPENT_BLOCK_SIZE; | |
190 | struct crypt_priv *ctx = priv; | |
191 | int i; | |
192 | ||
193 | ctx->fpu_enabled = serpent_fpu_begin(ctx->fpu_enabled, nbytes); | |
194 | ||
195 | if (nbytes >= SERPENT_AVX2_PARALLEL_BLOCKS * bsize) { | |
196 | serpent_ecb_enc_16way(ctx->ctx, srcdst, srcdst); | |
197 | srcdst += bsize * SERPENT_AVX2_PARALLEL_BLOCKS; | |
198 | nbytes -= bsize * SERPENT_AVX2_PARALLEL_BLOCKS; | |
199 | } | |
200 | ||
201 | while (nbytes >= SERPENT_PARALLEL_BLOCKS * bsize) { | |
202 | serpent_ecb_enc_8way_avx(ctx->ctx, srcdst, srcdst); | |
203 | srcdst += bsize * SERPENT_PARALLEL_BLOCKS; | |
204 | nbytes -= bsize * SERPENT_PARALLEL_BLOCKS; | |
205 | } | |
206 | ||
207 | for (i = 0; i < nbytes / bsize; i++, srcdst += bsize) | |
208 | __serpent_encrypt(ctx->ctx, srcdst, srcdst); | |
209 | } | |
210 | ||
211 | static void decrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) | |
212 | { | |
213 | const unsigned int bsize = SERPENT_BLOCK_SIZE; | |
214 | struct crypt_priv *ctx = priv; | |
215 | int i; | |
216 | ||
217 | ctx->fpu_enabled = serpent_fpu_begin(ctx->fpu_enabled, nbytes); | |
218 | ||
219 | if (nbytes >= SERPENT_AVX2_PARALLEL_BLOCKS * bsize) { | |
220 | serpent_ecb_dec_16way(ctx->ctx, srcdst, srcdst); | |
221 | srcdst += bsize * SERPENT_AVX2_PARALLEL_BLOCKS; | |
222 | nbytes -= bsize * SERPENT_AVX2_PARALLEL_BLOCKS; | |
223 | } | |
224 | ||
225 | while (nbytes >= SERPENT_PARALLEL_BLOCKS * bsize) { | |
226 | serpent_ecb_dec_8way_avx(ctx->ctx, srcdst, srcdst); | |
227 | srcdst += bsize * SERPENT_PARALLEL_BLOCKS; | |
228 | nbytes -= bsize * SERPENT_PARALLEL_BLOCKS; | |
229 | } | |
230 | ||
231 | for (i = 0; i < nbytes / bsize; i++, srcdst += bsize) | |
232 | __serpent_decrypt(ctx->ctx, srcdst, srcdst); | |
233 | } | |
234 | ||
235 | static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
236 | struct scatterlist *src, unsigned int nbytes) | |
237 | { | |
238 | struct serpent_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
239 | be128 buf[SERPENT_AVX2_PARALLEL_BLOCKS]; | |
240 | struct crypt_priv crypt_ctx = { | |
241 | .ctx = &ctx->serpent_ctx, | |
242 | .fpu_enabled = false, | |
243 | }; | |
244 | struct lrw_crypt_req req = { | |
245 | .tbuf = buf, | |
246 | .tbuflen = sizeof(buf), | |
247 | ||
248 | .table_ctx = &ctx->lrw_table, | |
249 | .crypt_ctx = &crypt_ctx, | |
250 | .crypt_fn = encrypt_callback, | |
251 | }; | |
252 | int ret; | |
253 | ||
254 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
255 | ret = lrw_crypt(desc, dst, src, nbytes, &req); | |
256 | serpent_fpu_end(crypt_ctx.fpu_enabled); | |
257 | ||
258 | return ret; | |
259 | } | |
260 | ||
261 | static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
262 | struct scatterlist *src, unsigned int nbytes) | |
263 | { | |
264 | struct serpent_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
265 | be128 buf[SERPENT_AVX2_PARALLEL_BLOCKS]; | |
266 | struct crypt_priv crypt_ctx = { | |
267 | .ctx = &ctx->serpent_ctx, | |
268 | .fpu_enabled = false, | |
269 | }; | |
270 | struct lrw_crypt_req req = { | |
271 | .tbuf = buf, | |
272 | .tbuflen = sizeof(buf), | |
273 | ||
274 | .table_ctx = &ctx->lrw_table, | |
275 | .crypt_ctx = &crypt_ctx, | |
276 | .crypt_fn = decrypt_callback, | |
277 | }; | |
278 | int ret; | |
279 | ||
280 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
281 | ret = lrw_crypt(desc, dst, src, nbytes, &req); | |
282 | serpent_fpu_end(crypt_ctx.fpu_enabled); | |
283 | ||
284 | return ret; | |
285 | } | |
286 | ||
287 | static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
288 | struct scatterlist *src, unsigned int nbytes) | |
289 | { | |
290 | struct serpent_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
291 | ||
292 | return glue_xts_crypt_128bit(&serpent_enc_xts, desc, dst, src, nbytes, | |
293 | XTS_TWEAK_CAST(__serpent_encrypt), | |
294 | &ctx->tweak_ctx, &ctx->crypt_ctx); | |
295 | } | |
296 | ||
297 | static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
298 | struct scatterlist *src, unsigned int nbytes) | |
299 | { | |
300 | struct serpent_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
301 | ||
302 | return glue_xts_crypt_128bit(&serpent_dec_xts, desc, dst, src, nbytes, | |
303 | XTS_TWEAK_CAST(__serpent_encrypt), | |
304 | &ctx->tweak_ctx, &ctx->crypt_ctx); | |
305 | } | |
306 | ||
307 | static struct crypto_alg srp_algs[10] = { { | |
308 | .cra_name = "__ecb-serpent-avx2", | |
309 | .cra_driver_name = "__driver-ecb-serpent-avx2", | |
310 | .cra_priority = 0, | |
f82419ac SM |
311 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
312 | CRYPTO_ALG_INTERNAL, | |
56d76c96 JK |
313 | .cra_blocksize = SERPENT_BLOCK_SIZE, |
314 | .cra_ctxsize = sizeof(struct serpent_ctx), | |
315 | .cra_alignmask = 0, | |
316 | .cra_type = &crypto_blkcipher_type, | |
317 | .cra_module = THIS_MODULE, | |
318 | .cra_list = LIST_HEAD_INIT(srp_algs[0].cra_list), | |
319 | .cra_u = { | |
320 | .blkcipher = { | |
321 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
322 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
323 | .setkey = serpent_setkey, | |
324 | .encrypt = ecb_encrypt, | |
325 | .decrypt = ecb_decrypt, | |
326 | }, | |
327 | }, | |
328 | }, { | |
329 | .cra_name = "__cbc-serpent-avx2", | |
330 | .cra_driver_name = "__driver-cbc-serpent-avx2", | |
331 | .cra_priority = 0, | |
f82419ac SM |
332 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
333 | CRYPTO_ALG_INTERNAL, | |
56d76c96 JK |
334 | .cra_blocksize = SERPENT_BLOCK_SIZE, |
335 | .cra_ctxsize = sizeof(struct serpent_ctx), | |
336 | .cra_alignmask = 0, | |
337 | .cra_type = &crypto_blkcipher_type, | |
338 | .cra_module = THIS_MODULE, | |
339 | .cra_list = LIST_HEAD_INIT(srp_algs[1].cra_list), | |
340 | .cra_u = { | |
341 | .blkcipher = { | |
342 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
343 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
344 | .setkey = serpent_setkey, | |
345 | .encrypt = cbc_encrypt, | |
346 | .decrypt = cbc_decrypt, | |
347 | }, | |
348 | }, | |
349 | }, { | |
350 | .cra_name = "__ctr-serpent-avx2", | |
351 | .cra_driver_name = "__driver-ctr-serpent-avx2", | |
352 | .cra_priority = 0, | |
f82419ac SM |
353 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
354 | CRYPTO_ALG_INTERNAL, | |
56d76c96 JK |
355 | .cra_blocksize = 1, |
356 | .cra_ctxsize = sizeof(struct serpent_ctx), | |
357 | .cra_alignmask = 0, | |
358 | .cra_type = &crypto_blkcipher_type, | |
359 | .cra_module = THIS_MODULE, | |
360 | .cra_list = LIST_HEAD_INIT(srp_algs[2].cra_list), | |
361 | .cra_u = { | |
362 | .blkcipher = { | |
363 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
364 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
365 | .ivsize = SERPENT_BLOCK_SIZE, | |
366 | .setkey = serpent_setkey, | |
367 | .encrypt = ctr_crypt, | |
368 | .decrypt = ctr_crypt, | |
369 | }, | |
370 | }, | |
371 | }, { | |
372 | .cra_name = "__lrw-serpent-avx2", | |
373 | .cra_driver_name = "__driver-lrw-serpent-avx2", | |
374 | .cra_priority = 0, | |
f82419ac SM |
375 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
376 | CRYPTO_ALG_INTERNAL, | |
56d76c96 JK |
377 | .cra_blocksize = SERPENT_BLOCK_SIZE, |
378 | .cra_ctxsize = sizeof(struct serpent_lrw_ctx), | |
379 | .cra_alignmask = 0, | |
380 | .cra_type = &crypto_blkcipher_type, | |
381 | .cra_module = THIS_MODULE, | |
382 | .cra_list = LIST_HEAD_INIT(srp_algs[3].cra_list), | |
383 | .cra_exit = lrw_serpent_exit_tfm, | |
384 | .cra_u = { | |
385 | .blkcipher = { | |
386 | .min_keysize = SERPENT_MIN_KEY_SIZE + | |
387 | SERPENT_BLOCK_SIZE, | |
388 | .max_keysize = SERPENT_MAX_KEY_SIZE + | |
389 | SERPENT_BLOCK_SIZE, | |
390 | .ivsize = SERPENT_BLOCK_SIZE, | |
391 | .setkey = lrw_serpent_setkey, | |
392 | .encrypt = lrw_encrypt, | |
393 | .decrypt = lrw_decrypt, | |
394 | }, | |
395 | }, | |
396 | }, { | |
397 | .cra_name = "__xts-serpent-avx2", | |
398 | .cra_driver_name = "__driver-xts-serpent-avx2", | |
399 | .cra_priority = 0, | |
f82419ac SM |
400 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
401 | CRYPTO_ALG_INTERNAL, | |
56d76c96 JK |
402 | .cra_blocksize = SERPENT_BLOCK_SIZE, |
403 | .cra_ctxsize = sizeof(struct serpent_xts_ctx), | |
404 | .cra_alignmask = 0, | |
405 | .cra_type = &crypto_blkcipher_type, | |
406 | .cra_module = THIS_MODULE, | |
407 | .cra_list = LIST_HEAD_INIT(srp_algs[4].cra_list), | |
408 | .cra_u = { | |
409 | .blkcipher = { | |
410 | .min_keysize = SERPENT_MIN_KEY_SIZE * 2, | |
411 | .max_keysize = SERPENT_MAX_KEY_SIZE * 2, | |
412 | .ivsize = SERPENT_BLOCK_SIZE, | |
413 | .setkey = xts_serpent_setkey, | |
414 | .encrypt = xts_encrypt, | |
415 | .decrypt = xts_decrypt, | |
416 | }, | |
417 | }, | |
418 | }, { | |
419 | .cra_name = "ecb(serpent)", | |
420 | .cra_driver_name = "ecb-serpent-avx2", | |
421 | .cra_priority = 600, | |
422 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
423 | .cra_blocksize = SERPENT_BLOCK_SIZE, | |
424 | .cra_ctxsize = sizeof(struct async_helper_ctx), | |
425 | .cra_alignmask = 0, | |
426 | .cra_type = &crypto_ablkcipher_type, | |
427 | .cra_module = THIS_MODULE, | |
428 | .cra_list = LIST_HEAD_INIT(srp_algs[5].cra_list), | |
429 | .cra_init = ablk_init, | |
430 | .cra_exit = ablk_exit, | |
431 | .cra_u = { | |
432 | .ablkcipher = { | |
433 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
434 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
435 | .setkey = ablk_set_key, | |
436 | .encrypt = ablk_encrypt, | |
437 | .decrypt = ablk_decrypt, | |
438 | }, | |
439 | }, | |
440 | }, { | |
441 | .cra_name = "cbc(serpent)", | |
442 | .cra_driver_name = "cbc-serpent-avx2", | |
443 | .cra_priority = 600, | |
444 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
445 | .cra_blocksize = SERPENT_BLOCK_SIZE, | |
446 | .cra_ctxsize = sizeof(struct async_helper_ctx), | |
447 | .cra_alignmask = 0, | |
448 | .cra_type = &crypto_ablkcipher_type, | |
449 | .cra_module = THIS_MODULE, | |
450 | .cra_list = LIST_HEAD_INIT(srp_algs[6].cra_list), | |
451 | .cra_init = ablk_init, | |
452 | .cra_exit = ablk_exit, | |
453 | .cra_u = { | |
454 | .ablkcipher = { | |
455 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
456 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
457 | .ivsize = SERPENT_BLOCK_SIZE, | |
458 | .setkey = ablk_set_key, | |
459 | .encrypt = __ablk_encrypt, | |
460 | .decrypt = ablk_decrypt, | |
461 | }, | |
462 | }, | |
463 | }, { | |
464 | .cra_name = "ctr(serpent)", | |
465 | .cra_driver_name = "ctr-serpent-avx2", | |
466 | .cra_priority = 600, | |
467 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
468 | .cra_blocksize = 1, | |
469 | .cra_ctxsize = sizeof(struct async_helper_ctx), | |
470 | .cra_alignmask = 0, | |
471 | .cra_type = &crypto_ablkcipher_type, | |
472 | .cra_module = THIS_MODULE, | |
473 | .cra_list = LIST_HEAD_INIT(srp_algs[7].cra_list), | |
474 | .cra_init = ablk_init, | |
475 | .cra_exit = ablk_exit, | |
476 | .cra_u = { | |
477 | .ablkcipher = { | |
478 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
479 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
480 | .ivsize = SERPENT_BLOCK_SIZE, | |
481 | .setkey = ablk_set_key, | |
482 | .encrypt = ablk_encrypt, | |
483 | .decrypt = ablk_encrypt, | |
484 | .geniv = "chainiv", | |
485 | }, | |
486 | }, | |
487 | }, { | |
488 | .cra_name = "lrw(serpent)", | |
489 | .cra_driver_name = "lrw-serpent-avx2", | |
490 | .cra_priority = 600, | |
491 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
492 | .cra_blocksize = SERPENT_BLOCK_SIZE, | |
493 | .cra_ctxsize = sizeof(struct async_helper_ctx), | |
494 | .cra_alignmask = 0, | |
495 | .cra_type = &crypto_ablkcipher_type, | |
496 | .cra_module = THIS_MODULE, | |
497 | .cra_list = LIST_HEAD_INIT(srp_algs[8].cra_list), | |
498 | .cra_init = ablk_init, | |
499 | .cra_exit = ablk_exit, | |
500 | .cra_u = { | |
501 | .ablkcipher = { | |
502 | .min_keysize = SERPENT_MIN_KEY_SIZE + | |
503 | SERPENT_BLOCK_SIZE, | |
504 | .max_keysize = SERPENT_MAX_KEY_SIZE + | |
505 | SERPENT_BLOCK_SIZE, | |
506 | .ivsize = SERPENT_BLOCK_SIZE, | |
507 | .setkey = ablk_set_key, | |
508 | .encrypt = ablk_encrypt, | |
509 | .decrypt = ablk_decrypt, | |
510 | }, | |
511 | }, | |
512 | }, { | |
513 | .cra_name = "xts(serpent)", | |
514 | .cra_driver_name = "xts-serpent-avx2", | |
515 | .cra_priority = 600, | |
516 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
517 | .cra_blocksize = SERPENT_BLOCK_SIZE, | |
518 | .cra_ctxsize = sizeof(struct async_helper_ctx), | |
519 | .cra_alignmask = 0, | |
520 | .cra_type = &crypto_ablkcipher_type, | |
521 | .cra_module = THIS_MODULE, | |
522 | .cra_list = LIST_HEAD_INIT(srp_algs[9].cra_list), | |
523 | .cra_init = ablk_init, | |
524 | .cra_exit = ablk_exit, | |
525 | .cra_u = { | |
526 | .ablkcipher = { | |
527 | .min_keysize = SERPENT_MIN_KEY_SIZE * 2, | |
528 | .max_keysize = SERPENT_MAX_KEY_SIZE * 2, | |
529 | .ivsize = SERPENT_BLOCK_SIZE, | |
530 | .setkey = ablk_set_key, | |
531 | .encrypt = ablk_encrypt, | |
532 | .decrypt = ablk_decrypt, | |
533 | }, | |
534 | }, | |
535 | } }; | |
536 | ||
537 | static int __init init(void) | |
538 | { | |
534ff06e | 539 | const char *feature_name; |
56d76c96 | 540 | |
b54b4bbb IM |
541 | if (!cpu_has_avx2 || !cpu_has_osxsave) { |
542 | pr_info("AVX2 instructions are not detected.\n"); | |
543 | return -ENODEV; | |
544 | } | |
534ff06e IM |
545 | if (!cpu_has_xfeatures(XSTATE_SSE | XSTATE_YMM, &feature_name)) { |
546 | pr_info("CPU feature '%s' is not supported.\n", feature_name); | |
56d76c96 JK |
547 | return -ENODEV; |
548 | } | |
549 | ||
550 | return crypto_register_algs(srp_algs, ARRAY_SIZE(srp_algs)); | |
551 | } | |
552 | ||
553 | static void __exit fini(void) | |
554 | { | |
555 | crypto_unregister_algs(srp_algs, ARRAY_SIZE(srp_algs)); | |
556 | } | |
557 | ||
558 | module_init(init); | |
559 | module_exit(fini); | |
560 | ||
561 | MODULE_LICENSE("GPL"); | |
562 | MODULE_DESCRIPTION("Serpent Cipher Algorithm, AVX2 optimized"); | |
5d26a105 KC |
563 | MODULE_ALIAS_CRYPTO("serpent"); |
564 | MODULE_ALIAS_CRYPTO("serpent-asm"); |