Commit | Line | Data |
---|---|---|
54b6a1bd HY |
1 | /* |
2 | * Support for Intel AES-NI instructions. This file contains glue | |
3 | * code, the real AES implementation is in intel-aes_asm.S. | |
4 | * | |
5 | * Copyright (C) 2008, Intel Corp. | |
6 | * Author: Huang Ying <ying.huang@intel.com> | |
7 | * | |
0bd82f5f TS |
8 | * Added RFC4106 AES-GCM support for 128-bit keys under the AEAD |
9 | * interface for 64-bit kernels. | |
10 | * Authors: Adrian Hoban <adrian.hoban@intel.com> | |
11 | * Gabriele Paoloni <gabriele.paoloni@intel.com> | |
12 | * Tadeusz Struk (tadeusz.struk@intel.com) | |
13 | * Aidan O'Mahony (aidan.o.mahony@intel.com) | |
14 | * Copyright (c) 2010, Intel Corporation. | |
15 | * | |
54b6a1bd HY |
16 | * This program is free software; you can redistribute it and/or modify |
17 | * it under the terms of the GNU General Public License as published by | |
18 | * the Free Software Foundation; either version 2 of the License, or | |
19 | * (at your option) any later version. | |
20 | */ | |
21 | ||
22 | #include <linux/hardirq.h> | |
23 | #include <linux/types.h> | |
24 | #include <linux/crypto.h> | |
7c52d551 | 25 | #include <linux/module.h> |
54b6a1bd HY |
26 | #include <linux/err.h> |
27 | #include <crypto/algapi.h> | |
28 | #include <crypto/aes.h> | |
29 | #include <crypto/cryptd.h> | |
12387a46 | 30 | #include <crypto/ctr.h> |
023af608 JK |
31 | #include <crypto/b128ops.h> |
32 | #include <crypto/lrw.h> | |
33 | #include <crypto/xts.h> | |
3bd391f0 | 34 | #include <asm/cpu_device_id.h> |
54b6a1bd | 35 | #include <asm/i387.h> |
70ef2601 | 36 | #include <asm/crypto/aes.h> |
801201aa | 37 | #include <crypto/ablk_helper.h> |
0bd82f5f TS |
38 | #include <crypto/scatterwalk.h> |
39 | #include <crypto/internal/aead.h> | |
40 | #include <linux/workqueue.h> | |
41 | #include <linux/spinlock.h> | |
c456a9cd JK |
42 | #ifdef CONFIG_X86_64 |
43 | #include <asm/crypto/glue_helper.h> | |
44 | #endif | |
54b6a1bd | 45 | |
2cf4ac8b HY |
46 | #if defined(CONFIG_CRYPTO_PCBC) || defined(CONFIG_CRYPTO_PCBC_MODULE) |
47 | #define HAS_PCBC | |
48 | #endif | |
49 | ||
0bd82f5f TS |
50 | /* This data is stored at the end of the crypto_tfm struct. |
51 | * It's a type of per "session" data storage location. | |
52 | * This needs to be 16 byte aligned. | |
53 | */ | |
54 | struct aesni_rfc4106_gcm_ctx { | |
55 | u8 hash_subkey[16]; | |
56 | struct crypto_aes_ctx aes_key_expanded; | |
57 | u8 nonce[4]; | |
58 | struct cryptd_aead *cryptd_tfm; | |
59 | }; | |
60 | ||
61 | struct aesni_gcm_set_hash_subkey_result { | |
62 | int err; | |
63 | struct completion completion; | |
64 | }; | |
65 | ||
66 | struct aesni_hash_subkey_req_data { | |
67 | u8 iv[16]; | |
68 | struct aesni_gcm_set_hash_subkey_result result; | |
69 | struct scatterlist sg; | |
70 | }; | |
71 | ||
72 | #define AESNI_ALIGN (16) | |
54b6a1bd | 73 | #define AES_BLOCK_MASK (~(AES_BLOCK_SIZE-1)) |
0bd82f5f | 74 | #define RFC4106_HASH_SUBKEY_SIZE 16 |
54b6a1bd | 75 | |
023af608 JK |
76 | struct aesni_lrw_ctx { |
77 | struct lrw_table_ctx lrw_table; | |
78 | u8 raw_aes_ctx[sizeof(struct crypto_aes_ctx) + AESNI_ALIGN - 1]; | |
79 | }; | |
80 | ||
81 | struct aesni_xts_ctx { | |
82 | u8 raw_tweak_ctx[sizeof(struct crypto_aes_ctx) + AESNI_ALIGN - 1]; | |
83 | u8 raw_crypt_ctx[sizeof(struct crypto_aes_ctx) + AESNI_ALIGN - 1]; | |
84 | }; | |
85 | ||
54b6a1bd HY |
86 | asmlinkage int aesni_set_key(struct crypto_aes_ctx *ctx, const u8 *in_key, |
87 | unsigned int key_len); | |
88 | asmlinkage void aesni_enc(struct crypto_aes_ctx *ctx, u8 *out, | |
89 | const u8 *in); | |
90 | asmlinkage void aesni_dec(struct crypto_aes_ctx *ctx, u8 *out, | |
91 | const u8 *in); | |
92 | asmlinkage void aesni_ecb_enc(struct crypto_aes_ctx *ctx, u8 *out, | |
93 | const u8 *in, unsigned int len); | |
94 | asmlinkage void aesni_ecb_dec(struct crypto_aes_ctx *ctx, u8 *out, | |
95 | const u8 *in, unsigned int len); | |
96 | asmlinkage void aesni_cbc_enc(struct crypto_aes_ctx *ctx, u8 *out, | |
97 | const u8 *in, unsigned int len, u8 *iv); | |
98 | asmlinkage void aesni_cbc_dec(struct crypto_aes_ctx *ctx, u8 *out, | |
99 | const u8 *in, unsigned int len, u8 *iv); | |
9bed4aca RD |
100 | |
101 | int crypto_fpu_init(void); | |
102 | void crypto_fpu_exit(void); | |
103 | ||
d764593a TC |
104 | #define AVX_GEN2_OPTSIZE 640 |
105 | #define AVX_GEN4_OPTSIZE 4096 | |
106 | ||
0d258efb | 107 | #ifdef CONFIG_X86_64 |
22cddcc7 | 108 | |
109 | static void (*aesni_ctr_enc_tfm)(struct crypto_aes_ctx *ctx, u8 *out, | |
110 | const u8 *in, unsigned int len, u8 *iv); | |
12387a46 HY |
111 | asmlinkage void aesni_ctr_enc(struct crypto_aes_ctx *ctx, u8 *out, |
112 | const u8 *in, unsigned int len, u8 *iv); | |
54b6a1bd | 113 | |
c456a9cd JK |
114 | asmlinkage void aesni_xts_crypt8(struct crypto_aes_ctx *ctx, u8 *out, |
115 | const u8 *in, bool enc, u8 *iv); | |
116 | ||
0bd82f5f TS |
117 | /* asmlinkage void aesni_gcm_enc() |
118 | * void *ctx, AES Key schedule. Starts on a 16 byte boundary. | |
119 | * u8 *out, Ciphertext output. Encrypt in-place is allowed. | |
120 | * const u8 *in, Plaintext input | |
121 | * unsigned long plaintext_len, Length of data in bytes for encryption. | |
122 | * u8 *iv, Pre-counter block j0: 4 byte salt (from Security Association) | |
123 | * concatenated with 8 byte Initialisation Vector (from IPSec ESP | |
124 | * Payload) concatenated with 0x00000001. 16-byte aligned pointer. | |
125 | * u8 *hash_subkey, the Hash sub key input. Data starts on a 16-byte boundary. | |
126 | * const u8 *aad, Additional Authentication Data (AAD) | |
127 | * unsigned long aad_len, Length of AAD in bytes. With RFC4106 this | |
128 | * is going to be 8 or 12 bytes | |
129 | * u8 *auth_tag, Authenticated Tag output. | |
130 | * unsigned long auth_tag_len), Authenticated Tag Length in bytes. | |
131 | * Valid values are 16 (most likely), 12 or 8. | |
132 | */ | |
133 | asmlinkage void aesni_gcm_enc(void *ctx, u8 *out, | |
134 | const u8 *in, unsigned long plaintext_len, u8 *iv, | |
135 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
136 | u8 *auth_tag, unsigned long auth_tag_len); | |
137 | ||
138 | /* asmlinkage void aesni_gcm_dec() | |
139 | * void *ctx, AES Key schedule. Starts on a 16 byte boundary. | |
140 | * u8 *out, Plaintext output. Decrypt in-place is allowed. | |
141 | * const u8 *in, Ciphertext input | |
142 | * unsigned long ciphertext_len, Length of data in bytes for decryption. | |
143 | * u8 *iv, Pre-counter block j0: 4 byte salt (from Security Association) | |
144 | * concatenated with 8 byte Initialisation Vector (from IPSec ESP | |
145 | * Payload) concatenated with 0x00000001. 16-byte aligned pointer. | |
146 | * u8 *hash_subkey, the Hash sub key input. Data starts on a 16-byte boundary. | |
147 | * const u8 *aad, Additional Authentication Data (AAD) | |
148 | * unsigned long aad_len, Length of AAD in bytes. With RFC4106 this is going | |
149 | * to be 8 or 12 bytes | |
150 | * u8 *auth_tag, Authenticated Tag output. | |
151 | * unsigned long auth_tag_len) Authenticated Tag Length in bytes. | |
152 | * Valid values are 16 (most likely), 12 or 8. | |
153 | */ | |
154 | asmlinkage void aesni_gcm_dec(void *ctx, u8 *out, | |
155 | const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
156 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
157 | u8 *auth_tag, unsigned long auth_tag_len); | |
158 | ||
d764593a TC |
159 | |
160 | #ifdef CONFIG_AS_AVX | |
22cddcc7 | 161 | asmlinkage void aes_ctr_enc_128_avx_by8(const u8 *in, u8 *iv, |
162 | void *keys, u8 *out, unsigned int num_bytes); | |
163 | asmlinkage void aes_ctr_enc_192_avx_by8(const u8 *in, u8 *iv, | |
164 | void *keys, u8 *out, unsigned int num_bytes); | |
165 | asmlinkage void aes_ctr_enc_256_avx_by8(const u8 *in, u8 *iv, | |
166 | void *keys, u8 *out, unsigned int num_bytes); | |
d764593a TC |
167 | /* |
168 | * asmlinkage void aesni_gcm_precomp_avx_gen2() | |
169 | * gcm_data *my_ctx_data, context data | |
170 | * u8 *hash_subkey, the Hash sub key input. Data starts on a 16-byte boundary. | |
171 | */ | |
172 | asmlinkage void aesni_gcm_precomp_avx_gen2(void *my_ctx_data, u8 *hash_subkey); | |
173 | ||
174 | asmlinkage void aesni_gcm_enc_avx_gen2(void *ctx, u8 *out, | |
175 | const u8 *in, unsigned long plaintext_len, u8 *iv, | |
176 | const u8 *aad, unsigned long aad_len, | |
177 | u8 *auth_tag, unsigned long auth_tag_len); | |
178 | ||
179 | asmlinkage void aesni_gcm_dec_avx_gen2(void *ctx, u8 *out, | |
180 | const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
181 | const u8 *aad, unsigned long aad_len, | |
182 | u8 *auth_tag, unsigned long auth_tag_len); | |
183 | ||
184 | static void aesni_gcm_enc_avx(void *ctx, u8 *out, | |
185 | const u8 *in, unsigned long plaintext_len, u8 *iv, | |
186 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
187 | u8 *auth_tag, unsigned long auth_tag_len) | |
188 | { | |
189 | if (plaintext_len < AVX_GEN2_OPTSIZE) { | |
190 | aesni_gcm_enc(ctx, out, in, plaintext_len, iv, hash_subkey, aad, | |
191 | aad_len, auth_tag, auth_tag_len); | |
192 | } else { | |
193 | aesni_gcm_precomp_avx_gen2(ctx, hash_subkey); | |
194 | aesni_gcm_enc_avx_gen2(ctx, out, in, plaintext_len, iv, aad, | |
195 | aad_len, auth_tag, auth_tag_len); | |
196 | } | |
197 | } | |
198 | ||
199 | static void aesni_gcm_dec_avx(void *ctx, u8 *out, | |
200 | const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
201 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
202 | u8 *auth_tag, unsigned long auth_tag_len) | |
203 | { | |
204 | if (ciphertext_len < AVX_GEN2_OPTSIZE) { | |
205 | aesni_gcm_dec(ctx, out, in, ciphertext_len, iv, hash_subkey, aad, | |
206 | aad_len, auth_tag, auth_tag_len); | |
207 | } else { | |
208 | aesni_gcm_precomp_avx_gen2(ctx, hash_subkey); | |
209 | aesni_gcm_dec_avx_gen2(ctx, out, in, ciphertext_len, iv, aad, | |
210 | aad_len, auth_tag, auth_tag_len); | |
211 | } | |
212 | } | |
213 | #endif | |
214 | ||
215 | #ifdef CONFIG_AS_AVX2 | |
216 | /* | |
217 | * asmlinkage void aesni_gcm_precomp_avx_gen4() | |
218 | * gcm_data *my_ctx_data, context data | |
219 | * u8 *hash_subkey, the Hash sub key input. Data starts on a 16-byte boundary. | |
220 | */ | |
221 | asmlinkage void aesni_gcm_precomp_avx_gen4(void *my_ctx_data, u8 *hash_subkey); | |
222 | ||
223 | asmlinkage void aesni_gcm_enc_avx_gen4(void *ctx, u8 *out, | |
224 | const u8 *in, unsigned long plaintext_len, u8 *iv, | |
225 | const u8 *aad, unsigned long aad_len, | |
226 | u8 *auth_tag, unsigned long auth_tag_len); | |
227 | ||
228 | asmlinkage void aesni_gcm_dec_avx_gen4(void *ctx, u8 *out, | |
229 | const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
230 | const u8 *aad, unsigned long aad_len, | |
231 | u8 *auth_tag, unsigned long auth_tag_len); | |
232 | ||
233 | static void aesni_gcm_enc_avx2(void *ctx, u8 *out, | |
234 | const u8 *in, unsigned long plaintext_len, u8 *iv, | |
235 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
236 | u8 *auth_tag, unsigned long auth_tag_len) | |
237 | { | |
238 | if (plaintext_len < AVX_GEN2_OPTSIZE) { | |
239 | aesni_gcm_enc(ctx, out, in, plaintext_len, iv, hash_subkey, aad, | |
240 | aad_len, auth_tag, auth_tag_len); | |
241 | } else if (plaintext_len < AVX_GEN4_OPTSIZE) { | |
242 | aesni_gcm_precomp_avx_gen2(ctx, hash_subkey); | |
243 | aesni_gcm_enc_avx_gen2(ctx, out, in, plaintext_len, iv, aad, | |
244 | aad_len, auth_tag, auth_tag_len); | |
245 | } else { | |
246 | aesni_gcm_precomp_avx_gen4(ctx, hash_subkey); | |
247 | aesni_gcm_enc_avx_gen4(ctx, out, in, plaintext_len, iv, aad, | |
248 | aad_len, auth_tag, auth_tag_len); | |
249 | } | |
250 | } | |
251 | ||
252 | static void aesni_gcm_dec_avx2(void *ctx, u8 *out, | |
253 | const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
254 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
255 | u8 *auth_tag, unsigned long auth_tag_len) | |
256 | { | |
257 | if (ciphertext_len < AVX_GEN2_OPTSIZE) { | |
258 | aesni_gcm_dec(ctx, out, in, ciphertext_len, iv, hash_subkey, | |
259 | aad, aad_len, auth_tag, auth_tag_len); | |
260 | } else if (ciphertext_len < AVX_GEN4_OPTSIZE) { | |
261 | aesni_gcm_precomp_avx_gen2(ctx, hash_subkey); | |
262 | aesni_gcm_dec_avx_gen2(ctx, out, in, ciphertext_len, iv, aad, | |
263 | aad_len, auth_tag, auth_tag_len); | |
264 | } else { | |
265 | aesni_gcm_precomp_avx_gen4(ctx, hash_subkey); | |
266 | aesni_gcm_dec_avx_gen4(ctx, out, in, ciphertext_len, iv, aad, | |
267 | aad_len, auth_tag, auth_tag_len); | |
268 | } | |
269 | } | |
270 | #endif | |
271 | ||
272 | static void (*aesni_gcm_enc_tfm)(void *ctx, u8 *out, | |
273 | const u8 *in, unsigned long plaintext_len, u8 *iv, | |
274 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
275 | u8 *auth_tag, unsigned long auth_tag_len); | |
276 | ||
277 | static void (*aesni_gcm_dec_tfm)(void *ctx, u8 *out, | |
278 | const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
279 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
280 | u8 *auth_tag, unsigned long auth_tag_len); | |
281 | ||
0bd82f5f TS |
282 | static inline struct |
283 | aesni_rfc4106_gcm_ctx *aesni_rfc4106_gcm_ctx_get(struct crypto_aead *tfm) | |
284 | { | |
285 | return | |
286 | (struct aesni_rfc4106_gcm_ctx *) | |
287 | PTR_ALIGN((u8 *) | |
288 | crypto_tfm_ctx(crypto_aead_tfm(tfm)), AESNI_ALIGN); | |
289 | } | |
559ad0ff | 290 | #endif |
0bd82f5f | 291 | |
54b6a1bd HY |
292 | static inline struct crypto_aes_ctx *aes_ctx(void *raw_ctx) |
293 | { | |
294 | unsigned long addr = (unsigned long)raw_ctx; | |
295 | unsigned long align = AESNI_ALIGN; | |
296 | ||
297 | if (align <= crypto_tfm_ctx_alignment()) | |
298 | align = 1; | |
299 | return (struct crypto_aes_ctx *)ALIGN(addr, align); | |
300 | } | |
301 | ||
302 | static int aes_set_key_common(struct crypto_tfm *tfm, void *raw_ctx, | |
303 | const u8 *in_key, unsigned int key_len) | |
304 | { | |
305 | struct crypto_aes_ctx *ctx = aes_ctx(raw_ctx); | |
306 | u32 *flags = &tfm->crt_flags; | |
307 | int err; | |
308 | ||
309 | if (key_len != AES_KEYSIZE_128 && key_len != AES_KEYSIZE_192 && | |
310 | key_len != AES_KEYSIZE_256) { | |
311 | *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; | |
312 | return -EINVAL; | |
313 | } | |
314 | ||
13b79b97 | 315 | if (!irq_fpu_usable()) |
54b6a1bd HY |
316 | err = crypto_aes_expand_key(ctx, in_key, key_len); |
317 | else { | |
318 | kernel_fpu_begin(); | |
319 | err = aesni_set_key(ctx, in_key, key_len); | |
320 | kernel_fpu_end(); | |
321 | } | |
322 | ||
323 | return err; | |
324 | } | |
325 | ||
326 | static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key, | |
327 | unsigned int key_len) | |
328 | { | |
329 | return aes_set_key_common(tfm, crypto_tfm_ctx(tfm), in_key, key_len); | |
330 | } | |
331 | ||
332 | static void aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
333 | { | |
334 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); | |
335 | ||
13b79b97 | 336 | if (!irq_fpu_usable()) |
54b6a1bd HY |
337 | crypto_aes_encrypt_x86(ctx, dst, src); |
338 | else { | |
339 | kernel_fpu_begin(); | |
340 | aesni_enc(ctx, dst, src); | |
341 | kernel_fpu_end(); | |
342 | } | |
343 | } | |
344 | ||
345 | static void aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
346 | { | |
347 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); | |
348 | ||
13b79b97 | 349 | if (!irq_fpu_usable()) |
54b6a1bd HY |
350 | crypto_aes_decrypt_x86(ctx, dst, src); |
351 | else { | |
352 | kernel_fpu_begin(); | |
353 | aesni_dec(ctx, dst, src); | |
354 | kernel_fpu_end(); | |
355 | } | |
356 | } | |
357 | ||
2cf4ac8b HY |
358 | static void __aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) |
359 | { | |
360 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); | |
361 | ||
362 | aesni_enc(ctx, dst, src); | |
363 | } | |
364 | ||
365 | static void __aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
366 | { | |
367 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); | |
368 | ||
369 | aesni_dec(ctx, dst, src); | |
370 | } | |
371 | ||
54b6a1bd HY |
372 | static int ecb_encrypt(struct blkcipher_desc *desc, |
373 | struct scatterlist *dst, struct scatterlist *src, | |
374 | unsigned int nbytes) | |
375 | { | |
376 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
377 | struct blkcipher_walk walk; | |
378 | int err; | |
379 | ||
380 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
381 | err = blkcipher_walk_virt(desc, &walk); | |
9251b64f | 382 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
54b6a1bd HY |
383 | |
384 | kernel_fpu_begin(); | |
385 | while ((nbytes = walk.nbytes)) { | |
386 | aesni_ecb_enc(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
387 | nbytes & AES_BLOCK_MASK); | |
388 | nbytes &= AES_BLOCK_SIZE - 1; | |
389 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
390 | } | |
391 | kernel_fpu_end(); | |
392 | ||
393 | return err; | |
394 | } | |
395 | ||
396 | static int ecb_decrypt(struct blkcipher_desc *desc, | |
397 | struct scatterlist *dst, struct scatterlist *src, | |
398 | unsigned int nbytes) | |
399 | { | |
400 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
401 | struct blkcipher_walk walk; | |
402 | int err; | |
403 | ||
404 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
405 | err = blkcipher_walk_virt(desc, &walk); | |
9251b64f | 406 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
54b6a1bd HY |
407 | |
408 | kernel_fpu_begin(); | |
409 | while ((nbytes = walk.nbytes)) { | |
410 | aesni_ecb_dec(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
411 | nbytes & AES_BLOCK_MASK); | |
412 | nbytes &= AES_BLOCK_SIZE - 1; | |
413 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
414 | } | |
415 | kernel_fpu_end(); | |
416 | ||
417 | return err; | |
418 | } | |
419 | ||
54b6a1bd HY |
420 | static int cbc_encrypt(struct blkcipher_desc *desc, |
421 | struct scatterlist *dst, struct scatterlist *src, | |
422 | unsigned int nbytes) | |
423 | { | |
424 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
425 | struct blkcipher_walk walk; | |
426 | int err; | |
427 | ||
428 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
429 | err = blkcipher_walk_virt(desc, &walk); | |
9251b64f | 430 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
54b6a1bd HY |
431 | |
432 | kernel_fpu_begin(); | |
433 | while ((nbytes = walk.nbytes)) { | |
434 | aesni_cbc_enc(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
435 | nbytes & AES_BLOCK_MASK, walk.iv); | |
436 | nbytes &= AES_BLOCK_SIZE - 1; | |
437 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
438 | } | |
439 | kernel_fpu_end(); | |
440 | ||
441 | return err; | |
442 | } | |
443 | ||
444 | static int cbc_decrypt(struct blkcipher_desc *desc, | |
445 | struct scatterlist *dst, struct scatterlist *src, | |
446 | unsigned int nbytes) | |
447 | { | |
448 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
449 | struct blkcipher_walk walk; | |
450 | int err; | |
451 | ||
452 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
453 | err = blkcipher_walk_virt(desc, &walk); | |
9251b64f | 454 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
54b6a1bd HY |
455 | |
456 | kernel_fpu_begin(); | |
457 | while ((nbytes = walk.nbytes)) { | |
458 | aesni_cbc_dec(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
459 | nbytes & AES_BLOCK_MASK, walk.iv); | |
460 | nbytes &= AES_BLOCK_SIZE - 1; | |
461 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
462 | } | |
463 | kernel_fpu_end(); | |
464 | ||
465 | return err; | |
466 | } | |
467 | ||
0d258efb | 468 | #ifdef CONFIG_X86_64 |
12387a46 HY |
469 | static void ctr_crypt_final(struct crypto_aes_ctx *ctx, |
470 | struct blkcipher_walk *walk) | |
471 | { | |
472 | u8 *ctrblk = walk->iv; | |
473 | u8 keystream[AES_BLOCK_SIZE]; | |
474 | u8 *src = walk->src.virt.addr; | |
475 | u8 *dst = walk->dst.virt.addr; | |
476 | unsigned int nbytes = walk->nbytes; | |
477 | ||
478 | aesni_enc(ctx, keystream, ctrblk); | |
479 | crypto_xor(keystream, src, nbytes); | |
480 | memcpy(dst, keystream, nbytes); | |
481 | crypto_inc(ctrblk, AES_BLOCK_SIZE); | |
482 | } | |
483 | ||
7da4b29d | 484 | #if 0 /* temporary disabled due to failing crypto tests */ |
22cddcc7 | 485 | static void aesni_ctr_enc_avx_tfm(struct crypto_aes_ctx *ctx, u8 *out, |
486 | const u8 *in, unsigned int len, u8 *iv) | |
487 | { | |
488 | /* | |
489 | * based on key length, override with the by8 version | |
490 | * of ctr mode encryption/decryption for improved performance | |
491 | * aes_set_key_common() ensures that key length is one of | |
492 | * {128,192,256} | |
493 | */ | |
494 | if (ctx->key_length == AES_KEYSIZE_128) | |
495 | aes_ctr_enc_128_avx_by8(in, iv, (void *)ctx, out, len); | |
496 | else if (ctx->key_length == AES_KEYSIZE_192) | |
497 | aes_ctr_enc_192_avx_by8(in, iv, (void *)ctx, out, len); | |
498 | else | |
499 | aes_ctr_enc_256_avx_by8(in, iv, (void *)ctx, out, len); | |
500 | } | |
501 | #endif | |
502 | ||
12387a46 HY |
503 | static int ctr_crypt(struct blkcipher_desc *desc, |
504 | struct scatterlist *dst, struct scatterlist *src, | |
505 | unsigned int nbytes) | |
506 | { | |
507 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
508 | struct blkcipher_walk walk; | |
509 | int err; | |
510 | ||
511 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
512 | err = blkcipher_walk_virt_block(desc, &walk, AES_BLOCK_SIZE); | |
513 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
514 | ||
515 | kernel_fpu_begin(); | |
516 | while ((nbytes = walk.nbytes) >= AES_BLOCK_SIZE) { | |
22cddcc7 | 517 | aesni_ctr_enc_tfm(ctx, walk.dst.virt.addr, walk.src.virt.addr, |
518 | nbytes & AES_BLOCK_MASK, walk.iv); | |
12387a46 HY |
519 | nbytes &= AES_BLOCK_SIZE - 1; |
520 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
521 | } | |
522 | if (walk.nbytes) { | |
523 | ctr_crypt_final(ctx, &walk); | |
524 | err = blkcipher_walk_done(desc, &walk, 0); | |
525 | } | |
526 | kernel_fpu_end(); | |
527 | ||
528 | return err; | |
529 | } | |
0d258efb | 530 | #endif |
12387a46 | 531 | |
54b6a1bd HY |
532 | static int ablk_ecb_init(struct crypto_tfm *tfm) |
533 | { | |
ef45b834 | 534 | return ablk_init_common(tfm, "__driver-ecb-aes-aesni"); |
54b6a1bd HY |
535 | } |
536 | ||
54b6a1bd HY |
537 | static int ablk_cbc_init(struct crypto_tfm *tfm) |
538 | { | |
ef45b834 | 539 | return ablk_init_common(tfm, "__driver-cbc-aes-aesni"); |
54b6a1bd HY |
540 | } |
541 | ||
0d258efb | 542 | #ifdef CONFIG_X86_64 |
2cf4ac8b HY |
543 | static int ablk_ctr_init(struct crypto_tfm *tfm) |
544 | { | |
ef45b834 | 545 | return ablk_init_common(tfm, "__driver-ctr-aes-aesni"); |
2cf4ac8b HY |
546 | } |
547 | ||
0d258efb | 548 | #endif |
2cf4ac8b | 549 | |
2cf4ac8b HY |
550 | #ifdef HAS_PCBC |
551 | static int ablk_pcbc_init(struct crypto_tfm *tfm) | |
552 | { | |
ef45b834 | 553 | return ablk_init_common(tfm, "fpu(pcbc(__driver-aes-aesni))"); |
2cf4ac8b | 554 | } |
2cf4ac8b HY |
555 | #endif |
556 | ||
023af608 | 557 | static void lrw_xts_encrypt_callback(void *ctx, u8 *blks, unsigned int nbytes) |
2cf4ac8b | 558 | { |
023af608 JK |
559 | aesni_ecb_enc(ctx, blks, blks, nbytes); |
560 | } | |
561 | ||
562 | static void lrw_xts_decrypt_callback(void *ctx, u8 *blks, unsigned int nbytes) | |
563 | { | |
564 | aesni_ecb_dec(ctx, blks, blks, nbytes); | |
565 | } | |
566 | ||
567 | static int lrw_aesni_setkey(struct crypto_tfm *tfm, const u8 *key, | |
568 | unsigned int keylen) | |
569 | { | |
570 | struct aesni_lrw_ctx *ctx = crypto_tfm_ctx(tfm); | |
571 | int err; | |
572 | ||
573 | err = aes_set_key_common(tfm, ctx->raw_aes_ctx, key, | |
574 | keylen - AES_BLOCK_SIZE); | |
575 | if (err) | |
576 | return err; | |
577 | ||
578 | return lrw_init_table(&ctx->lrw_table, key + keylen - AES_BLOCK_SIZE); | |
579 | } | |
580 | ||
581 | static void lrw_aesni_exit_tfm(struct crypto_tfm *tfm) | |
582 | { | |
583 | struct aesni_lrw_ctx *ctx = crypto_tfm_ctx(tfm); | |
584 | ||
585 | lrw_free_table(&ctx->lrw_table); | |
586 | } | |
587 | ||
588 | static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
589 | struct scatterlist *src, unsigned int nbytes) | |
590 | { | |
591 | struct aesni_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
592 | be128 buf[8]; | |
593 | struct lrw_crypt_req req = { | |
594 | .tbuf = buf, | |
595 | .tbuflen = sizeof(buf), | |
596 | ||
597 | .table_ctx = &ctx->lrw_table, | |
598 | .crypt_ctx = aes_ctx(ctx->raw_aes_ctx), | |
599 | .crypt_fn = lrw_xts_encrypt_callback, | |
600 | }; | |
601 | int ret; | |
602 | ||
603 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
604 | ||
605 | kernel_fpu_begin(); | |
606 | ret = lrw_crypt(desc, dst, src, nbytes, &req); | |
607 | kernel_fpu_end(); | |
608 | ||
609 | return ret; | |
610 | } | |
611 | ||
612 | static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
613 | struct scatterlist *src, unsigned int nbytes) | |
614 | { | |
615 | struct aesni_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
616 | be128 buf[8]; | |
617 | struct lrw_crypt_req req = { | |
618 | .tbuf = buf, | |
619 | .tbuflen = sizeof(buf), | |
620 | ||
621 | .table_ctx = &ctx->lrw_table, | |
622 | .crypt_ctx = aes_ctx(ctx->raw_aes_ctx), | |
623 | .crypt_fn = lrw_xts_decrypt_callback, | |
624 | }; | |
625 | int ret; | |
626 | ||
627 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
628 | ||
629 | kernel_fpu_begin(); | |
630 | ret = lrw_crypt(desc, dst, src, nbytes, &req); | |
631 | kernel_fpu_end(); | |
632 | ||
633 | return ret; | |
634 | } | |
635 | ||
636 | static int xts_aesni_setkey(struct crypto_tfm *tfm, const u8 *key, | |
637 | unsigned int keylen) | |
638 | { | |
639 | struct aesni_xts_ctx *ctx = crypto_tfm_ctx(tfm); | |
640 | u32 *flags = &tfm->crt_flags; | |
641 | int err; | |
642 | ||
643 | /* key consists of keys of equal size concatenated, therefore | |
644 | * the length must be even | |
645 | */ | |
646 | if (keylen % 2) { | |
647 | *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; | |
648 | return -EINVAL; | |
649 | } | |
650 | ||
651 | /* first half of xts-key is for crypt */ | |
652 | err = aes_set_key_common(tfm, ctx->raw_crypt_ctx, key, keylen / 2); | |
653 | if (err) | |
654 | return err; | |
655 | ||
656 | /* second half of xts-key is for tweak */ | |
657 | return aes_set_key_common(tfm, ctx->raw_tweak_ctx, key + keylen / 2, | |
658 | keylen / 2); | |
659 | } | |
660 | ||
661 | ||
32bec973 JK |
662 | static void aesni_xts_tweak(void *ctx, u8 *out, const u8 *in) |
663 | { | |
664 | aesni_enc(ctx, out, in); | |
665 | } | |
666 | ||
c456a9cd JK |
667 | #ifdef CONFIG_X86_64 |
668 | ||
669 | static void aesni_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
670 | { | |
671 | glue_xts_crypt_128bit_one(ctx, dst, src, iv, GLUE_FUNC_CAST(aesni_enc)); | |
672 | } | |
673 | ||
674 | static void aesni_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
675 | { | |
676 | glue_xts_crypt_128bit_one(ctx, dst, src, iv, GLUE_FUNC_CAST(aesni_dec)); | |
677 | } | |
678 | ||
679 | static void aesni_xts_enc8(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
680 | { | |
681 | aesni_xts_crypt8(ctx, (u8 *)dst, (const u8 *)src, true, (u8 *)iv); | |
682 | } | |
683 | ||
684 | static void aesni_xts_dec8(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
685 | { | |
686 | aesni_xts_crypt8(ctx, (u8 *)dst, (const u8 *)src, false, (u8 *)iv); | |
687 | } | |
688 | ||
689 | static const struct common_glue_ctx aesni_enc_xts = { | |
690 | .num_funcs = 2, | |
691 | .fpu_blocks_limit = 1, | |
692 | ||
693 | .funcs = { { | |
694 | .num_blocks = 8, | |
695 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(aesni_xts_enc8) } | |
696 | }, { | |
697 | .num_blocks = 1, | |
698 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(aesni_xts_enc) } | |
699 | } } | |
700 | }; | |
701 | ||
702 | static const struct common_glue_ctx aesni_dec_xts = { | |
703 | .num_funcs = 2, | |
704 | .fpu_blocks_limit = 1, | |
705 | ||
706 | .funcs = { { | |
707 | .num_blocks = 8, | |
708 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(aesni_xts_dec8) } | |
709 | }, { | |
710 | .num_blocks = 1, | |
711 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(aesni_xts_dec) } | |
712 | } } | |
713 | }; | |
714 | ||
715 | static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
716 | struct scatterlist *src, unsigned int nbytes) | |
717 | { | |
718 | struct aesni_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
719 | ||
720 | return glue_xts_crypt_128bit(&aesni_enc_xts, desc, dst, src, nbytes, | |
721 | XTS_TWEAK_CAST(aesni_xts_tweak), | |
722 | aes_ctx(ctx->raw_tweak_ctx), | |
723 | aes_ctx(ctx->raw_crypt_ctx)); | |
724 | } | |
725 | ||
726 | static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
727 | struct scatterlist *src, unsigned int nbytes) | |
728 | { | |
729 | struct aesni_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
730 | ||
731 | return glue_xts_crypt_128bit(&aesni_dec_xts, desc, dst, src, nbytes, | |
732 | XTS_TWEAK_CAST(aesni_xts_tweak), | |
733 | aes_ctx(ctx->raw_tweak_ctx), | |
734 | aes_ctx(ctx->raw_crypt_ctx)); | |
735 | } | |
736 | ||
737 | #else | |
738 | ||
023af608 JK |
739 | static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, |
740 | struct scatterlist *src, unsigned int nbytes) | |
741 | { | |
742 | struct aesni_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
743 | be128 buf[8]; | |
744 | struct xts_crypt_req req = { | |
745 | .tbuf = buf, | |
746 | .tbuflen = sizeof(buf), | |
747 | ||
748 | .tweak_ctx = aes_ctx(ctx->raw_tweak_ctx), | |
32bec973 | 749 | .tweak_fn = aesni_xts_tweak, |
023af608 JK |
750 | .crypt_ctx = aes_ctx(ctx->raw_crypt_ctx), |
751 | .crypt_fn = lrw_xts_encrypt_callback, | |
752 | }; | |
753 | int ret; | |
754 | ||
755 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
756 | ||
757 | kernel_fpu_begin(); | |
758 | ret = xts_crypt(desc, dst, src, nbytes, &req); | |
759 | kernel_fpu_end(); | |
760 | ||
761 | return ret; | |
762 | } | |
763 | ||
764 | static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
765 | struct scatterlist *src, unsigned int nbytes) | |
766 | { | |
767 | struct aesni_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
768 | be128 buf[8]; | |
769 | struct xts_crypt_req req = { | |
770 | .tbuf = buf, | |
771 | .tbuflen = sizeof(buf), | |
772 | ||
773 | .tweak_ctx = aes_ctx(ctx->raw_tweak_ctx), | |
32bec973 | 774 | .tweak_fn = aesni_xts_tweak, |
023af608 JK |
775 | .crypt_ctx = aes_ctx(ctx->raw_crypt_ctx), |
776 | .crypt_fn = lrw_xts_decrypt_callback, | |
777 | }; | |
778 | int ret; | |
779 | ||
780 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
781 | ||
782 | kernel_fpu_begin(); | |
783 | ret = xts_crypt(desc, dst, src, nbytes, &req); | |
784 | kernel_fpu_end(); | |
785 | ||
786 | return ret; | |
2cf4ac8b | 787 | } |
2cf4ac8b | 788 | |
c456a9cd JK |
789 | #endif |
790 | ||
559ad0ff | 791 | #ifdef CONFIG_X86_64 |
0bd82f5f TS |
792 | static int rfc4106_init(struct crypto_tfm *tfm) |
793 | { | |
794 | struct cryptd_aead *cryptd_tfm; | |
795 | struct aesni_rfc4106_gcm_ctx *ctx = (struct aesni_rfc4106_gcm_ctx *) | |
796 | PTR_ALIGN((u8 *)crypto_tfm_ctx(tfm), AESNI_ALIGN); | |
60af520c TS |
797 | struct crypto_aead *cryptd_child; |
798 | struct aesni_rfc4106_gcm_ctx *child_ctx; | |
0bd82f5f TS |
799 | cryptd_tfm = cryptd_alloc_aead("__driver-gcm-aes-aesni", 0, 0); |
800 | if (IS_ERR(cryptd_tfm)) | |
801 | return PTR_ERR(cryptd_tfm); | |
60af520c TS |
802 | |
803 | cryptd_child = cryptd_aead_child(cryptd_tfm); | |
804 | child_ctx = aesni_rfc4106_gcm_ctx_get(cryptd_child); | |
805 | memcpy(child_ctx, ctx, sizeof(*ctx)); | |
0bd82f5f TS |
806 | ctx->cryptd_tfm = cryptd_tfm; |
807 | tfm->crt_aead.reqsize = sizeof(struct aead_request) | |
808 | + crypto_aead_reqsize(&cryptd_tfm->base); | |
809 | return 0; | |
810 | } | |
811 | ||
812 | static void rfc4106_exit(struct crypto_tfm *tfm) | |
813 | { | |
814 | struct aesni_rfc4106_gcm_ctx *ctx = | |
815 | (struct aesni_rfc4106_gcm_ctx *) | |
816 | PTR_ALIGN((u8 *)crypto_tfm_ctx(tfm), AESNI_ALIGN); | |
817 | if (!IS_ERR(ctx->cryptd_tfm)) | |
818 | cryptd_free_aead(ctx->cryptd_tfm); | |
819 | return; | |
820 | } | |
821 | ||
822 | static void | |
823 | rfc4106_set_hash_subkey_done(struct crypto_async_request *req, int err) | |
824 | { | |
825 | struct aesni_gcm_set_hash_subkey_result *result = req->data; | |
826 | ||
827 | if (err == -EINPROGRESS) | |
828 | return; | |
829 | result->err = err; | |
830 | complete(&result->completion); | |
831 | } | |
832 | ||
833 | static int | |
834 | rfc4106_set_hash_subkey(u8 *hash_subkey, const u8 *key, unsigned int key_len) | |
835 | { | |
836 | struct crypto_ablkcipher *ctr_tfm; | |
837 | struct ablkcipher_request *req; | |
838 | int ret = -EINVAL; | |
839 | struct aesni_hash_subkey_req_data *req_data; | |
840 | ||
841 | ctr_tfm = crypto_alloc_ablkcipher("ctr(aes)", 0, 0); | |
842 | if (IS_ERR(ctr_tfm)) | |
843 | return PTR_ERR(ctr_tfm); | |
844 | ||
845 | crypto_ablkcipher_clear_flags(ctr_tfm, ~0); | |
846 | ||
847 | ret = crypto_ablkcipher_setkey(ctr_tfm, key, key_len); | |
7efd95f6 | 848 | if (ret) |
fc9044e2 | 849 | goto out_free_ablkcipher; |
0bd82f5f | 850 | |
fc9044e2 | 851 | ret = -ENOMEM; |
0bd82f5f | 852 | req = ablkcipher_request_alloc(ctr_tfm, GFP_KERNEL); |
fc9044e2 | 853 | if (!req) |
7efd95f6 | 854 | goto out_free_ablkcipher; |
0bd82f5f TS |
855 | |
856 | req_data = kmalloc(sizeof(*req_data), GFP_KERNEL); | |
fc9044e2 | 857 | if (!req_data) |
7efd95f6 | 858 | goto out_free_request; |
fc9044e2 | 859 | |
0bd82f5f TS |
860 | memset(req_data->iv, 0, sizeof(req_data->iv)); |
861 | ||
862 | /* Clear the data in the hash sub key container to zero.*/ | |
863 | /* We want to cipher all zeros to create the hash sub key. */ | |
864 | memset(hash_subkey, 0, RFC4106_HASH_SUBKEY_SIZE); | |
865 | ||
866 | init_completion(&req_data->result.completion); | |
867 | sg_init_one(&req_data->sg, hash_subkey, RFC4106_HASH_SUBKEY_SIZE); | |
868 | ablkcipher_request_set_tfm(req, ctr_tfm); | |
869 | ablkcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_SLEEP | | |
870 | CRYPTO_TFM_REQ_MAY_BACKLOG, | |
871 | rfc4106_set_hash_subkey_done, | |
872 | &req_data->result); | |
873 | ||
874 | ablkcipher_request_set_crypt(req, &req_data->sg, | |
875 | &req_data->sg, RFC4106_HASH_SUBKEY_SIZE, req_data->iv); | |
876 | ||
877 | ret = crypto_ablkcipher_encrypt(req); | |
878 | if (ret == -EINPROGRESS || ret == -EBUSY) { | |
879 | ret = wait_for_completion_interruptible | |
880 | (&req_data->result.completion); | |
881 | if (!ret) | |
882 | ret = req_data->result.err; | |
883 | } | |
fc9044e2 | 884 | kfree(req_data); |
7efd95f6 | 885 | out_free_request: |
0bd82f5f | 886 | ablkcipher_request_free(req); |
7efd95f6 | 887 | out_free_ablkcipher: |
0bd82f5f TS |
888 | crypto_free_ablkcipher(ctr_tfm); |
889 | return ret; | |
890 | } | |
891 | ||
892 | static int rfc4106_set_key(struct crypto_aead *parent, const u8 *key, | |
893 | unsigned int key_len) | |
894 | { | |
895 | int ret = 0; | |
896 | struct crypto_tfm *tfm = crypto_aead_tfm(parent); | |
897 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(parent); | |
60af520c TS |
898 | struct crypto_aead *cryptd_child = cryptd_aead_child(ctx->cryptd_tfm); |
899 | struct aesni_rfc4106_gcm_ctx *child_ctx = | |
900 | aesni_rfc4106_gcm_ctx_get(cryptd_child); | |
bf084d8f | 901 | u8 *new_key_align, *new_key_mem = NULL; |
0bd82f5f TS |
902 | |
903 | if (key_len < 4) { | |
904 | crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
905 | return -EINVAL; | |
906 | } | |
907 | /*Account for 4 byte nonce at the end.*/ | |
908 | key_len -= 4; | |
909 | if (key_len != AES_KEYSIZE_128) { | |
910 | crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
911 | return -EINVAL; | |
912 | } | |
913 | ||
914 | memcpy(ctx->nonce, key + key_len, sizeof(ctx->nonce)); | |
915 | /*This must be on a 16 byte boundary!*/ | |
916 | if ((unsigned long)(&(ctx->aes_key_expanded.key_enc[0])) % AESNI_ALIGN) | |
917 | return -EINVAL; | |
918 | ||
919 | if ((unsigned long)key % AESNI_ALIGN) { | |
920 | /*key is not aligned: use an auxuliar aligned pointer*/ | |
921 | new_key_mem = kmalloc(key_len+AESNI_ALIGN, GFP_KERNEL); | |
922 | if (!new_key_mem) | |
923 | return -ENOMEM; | |
924 | ||
bf084d8f MB |
925 | new_key_align = PTR_ALIGN(new_key_mem, AESNI_ALIGN); |
926 | memcpy(new_key_align, key, key_len); | |
927 | key = new_key_align; | |
0bd82f5f TS |
928 | } |
929 | ||
930 | if (!irq_fpu_usable()) | |
931 | ret = crypto_aes_expand_key(&(ctx->aes_key_expanded), | |
932 | key, key_len); | |
933 | else { | |
934 | kernel_fpu_begin(); | |
935 | ret = aesni_set_key(&(ctx->aes_key_expanded), key, key_len); | |
936 | kernel_fpu_end(); | |
937 | } | |
938 | /*This must be on a 16 byte boundary!*/ | |
939 | if ((unsigned long)(&(ctx->hash_subkey[0])) % AESNI_ALIGN) { | |
940 | ret = -EINVAL; | |
941 | goto exit; | |
942 | } | |
943 | ret = rfc4106_set_hash_subkey(ctx->hash_subkey, key, key_len); | |
60af520c | 944 | memcpy(child_ctx, ctx, sizeof(*ctx)); |
0bd82f5f TS |
945 | exit: |
946 | kfree(new_key_mem); | |
947 | return ret; | |
948 | } | |
949 | ||
950 | /* This is the Integrity Check Value (aka the authentication tag length and can | |
951 | * be 8, 12 or 16 bytes long. */ | |
952 | static int rfc4106_set_authsize(struct crypto_aead *parent, | |
953 | unsigned int authsize) | |
954 | { | |
955 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(parent); | |
956 | struct crypto_aead *cryptd_child = cryptd_aead_child(ctx->cryptd_tfm); | |
957 | ||
958 | switch (authsize) { | |
959 | case 8: | |
960 | case 12: | |
961 | case 16: | |
962 | break; | |
963 | default: | |
964 | return -EINVAL; | |
965 | } | |
966 | crypto_aead_crt(parent)->authsize = authsize; | |
967 | crypto_aead_crt(cryptd_child)->authsize = authsize; | |
968 | return 0; | |
969 | } | |
970 | ||
971 | static int rfc4106_encrypt(struct aead_request *req) | |
972 | { | |
973 | int ret; | |
974 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
975 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm); | |
0bd82f5f TS |
976 | |
977 | if (!irq_fpu_usable()) { | |
978 | struct aead_request *cryptd_req = | |
979 | (struct aead_request *) aead_request_ctx(req); | |
980 | memcpy(cryptd_req, req, sizeof(*req)); | |
981 | aead_request_set_tfm(cryptd_req, &ctx->cryptd_tfm->base); | |
982 | return crypto_aead_encrypt(cryptd_req); | |
983 | } else { | |
60af520c | 984 | struct crypto_aead *cryptd_child = cryptd_aead_child(ctx->cryptd_tfm); |
0bd82f5f TS |
985 | kernel_fpu_begin(); |
986 | ret = cryptd_child->base.crt_aead.encrypt(req); | |
987 | kernel_fpu_end(); | |
988 | return ret; | |
989 | } | |
990 | } | |
991 | ||
992 | static int rfc4106_decrypt(struct aead_request *req) | |
993 | { | |
994 | int ret; | |
995 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
996 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm); | |
0bd82f5f TS |
997 | |
998 | if (!irq_fpu_usable()) { | |
999 | struct aead_request *cryptd_req = | |
1000 | (struct aead_request *) aead_request_ctx(req); | |
1001 | memcpy(cryptd_req, req, sizeof(*req)); | |
1002 | aead_request_set_tfm(cryptd_req, &ctx->cryptd_tfm->base); | |
1003 | return crypto_aead_decrypt(cryptd_req); | |
1004 | } else { | |
60af520c | 1005 | struct crypto_aead *cryptd_child = cryptd_aead_child(ctx->cryptd_tfm); |
0bd82f5f TS |
1006 | kernel_fpu_begin(); |
1007 | ret = cryptd_child->base.crt_aead.decrypt(req); | |
1008 | kernel_fpu_end(); | |
1009 | return ret; | |
1010 | } | |
1011 | } | |
1012 | ||
0bd82f5f TS |
1013 | static int __driver_rfc4106_encrypt(struct aead_request *req) |
1014 | { | |
1015 | u8 one_entry_in_sg = 0; | |
1016 | u8 *src, *dst, *assoc; | |
1017 | __be32 counter = cpu_to_be32(1); | |
1018 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
1019 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm); | |
1020 | void *aes_ctx = &(ctx->aes_key_expanded); | |
1021 | unsigned long auth_tag_len = crypto_aead_authsize(tfm); | |
1022 | u8 iv_tab[16+AESNI_ALIGN]; | |
1023 | u8* iv = (u8 *) PTR_ALIGN((u8 *)iv_tab, AESNI_ALIGN); | |
1024 | struct scatter_walk src_sg_walk; | |
1025 | struct scatter_walk assoc_sg_walk; | |
1026 | struct scatter_walk dst_sg_walk; | |
1027 | unsigned int i; | |
1028 | ||
1029 | /* Assuming we are supporting rfc4106 64-bit extended */ | |
1030 | /* sequence numbers We need to have the AAD length equal */ | |
1031 | /* to 8 or 12 bytes */ | |
1032 | if (unlikely(req->assoclen != 8 && req->assoclen != 12)) | |
1033 | return -EINVAL; | |
1034 | /* IV below built */ | |
1035 | for (i = 0; i < 4; i++) | |
1036 | *(iv+i) = ctx->nonce[i]; | |
1037 | for (i = 0; i < 8; i++) | |
1038 | *(iv+4+i) = req->iv[i]; | |
1039 | *((__be32 *)(iv+12)) = counter; | |
1040 | ||
1041 | if ((sg_is_last(req->src)) && (sg_is_last(req->assoc))) { | |
1042 | one_entry_in_sg = 1; | |
1043 | scatterwalk_start(&src_sg_walk, req->src); | |
1044 | scatterwalk_start(&assoc_sg_walk, req->assoc); | |
8fd75e12 CW |
1045 | src = scatterwalk_map(&src_sg_walk); |
1046 | assoc = scatterwalk_map(&assoc_sg_walk); | |
0bd82f5f TS |
1047 | dst = src; |
1048 | if (unlikely(req->src != req->dst)) { | |
1049 | scatterwalk_start(&dst_sg_walk, req->dst); | |
8fd75e12 | 1050 | dst = scatterwalk_map(&dst_sg_walk); |
0bd82f5f TS |
1051 | } |
1052 | ||
1053 | } else { | |
1054 | /* Allocate memory for src, dst, assoc */ | |
1055 | src = kmalloc(req->cryptlen + auth_tag_len + req->assoclen, | |
1056 | GFP_ATOMIC); | |
1057 | if (unlikely(!src)) | |
1058 | return -ENOMEM; | |
1059 | assoc = (src + req->cryptlen + auth_tag_len); | |
1060 | scatterwalk_map_and_copy(src, req->src, 0, req->cryptlen, 0); | |
1061 | scatterwalk_map_and_copy(assoc, req->assoc, 0, | |
1062 | req->assoclen, 0); | |
1063 | dst = src; | |
1064 | } | |
1065 | ||
d764593a | 1066 | aesni_gcm_enc_tfm(aes_ctx, dst, src, (unsigned long)req->cryptlen, iv, |
0bd82f5f TS |
1067 | ctx->hash_subkey, assoc, (unsigned long)req->assoclen, dst |
1068 | + ((unsigned long)req->cryptlen), auth_tag_len); | |
1069 | ||
1070 | /* The authTag (aka the Integrity Check Value) needs to be written | |
1071 | * back to the packet. */ | |
1072 | if (one_entry_in_sg) { | |
1073 | if (unlikely(req->src != req->dst)) { | |
8fd75e12 | 1074 | scatterwalk_unmap(dst); |
0bd82f5f TS |
1075 | scatterwalk_done(&dst_sg_walk, 0, 0); |
1076 | } | |
8fd75e12 CW |
1077 | scatterwalk_unmap(src); |
1078 | scatterwalk_unmap(assoc); | |
0bd82f5f TS |
1079 | scatterwalk_done(&src_sg_walk, 0, 0); |
1080 | scatterwalk_done(&assoc_sg_walk, 0, 0); | |
1081 | } else { | |
1082 | scatterwalk_map_and_copy(dst, req->dst, 0, | |
1083 | req->cryptlen + auth_tag_len, 1); | |
1084 | kfree(src); | |
1085 | } | |
1086 | return 0; | |
1087 | } | |
1088 | ||
1089 | static int __driver_rfc4106_decrypt(struct aead_request *req) | |
1090 | { | |
1091 | u8 one_entry_in_sg = 0; | |
1092 | u8 *src, *dst, *assoc; | |
1093 | unsigned long tempCipherLen = 0; | |
1094 | __be32 counter = cpu_to_be32(1); | |
1095 | int retval = 0; | |
1096 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
1097 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm); | |
1098 | void *aes_ctx = &(ctx->aes_key_expanded); | |
1099 | unsigned long auth_tag_len = crypto_aead_authsize(tfm); | |
1100 | u8 iv_and_authTag[32+AESNI_ALIGN]; | |
1101 | u8 *iv = (u8 *) PTR_ALIGN((u8 *)iv_and_authTag, AESNI_ALIGN); | |
1102 | u8 *authTag = iv + 16; | |
1103 | struct scatter_walk src_sg_walk; | |
1104 | struct scatter_walk assoc_sg_walk; | |
1105 | struct scatter_walk dst_sg_walk; | |
1106 | unsigned int i; | |
1107 | ||
1108 | if (unlikely((req->cryptlen < auth_tag_len) || | |
1109 | (req->assoclen != 8 && req->assoclen != 12))) | |
1110 | return -EINVAL; | |
1111 | /* Assuming we are supporting rfc4106 64-bit extended */ | |
1112 | /* sequence numbers We need to have the AAD length */ | |
1113 | /* equal to 8 or 12 bytes */ | |
1114 | ||
1115 | tempCipherLen = (unsigned long)(req->cryptlen - auth_tag_len); | |
1116 | /* IV below built */ | |
1117 | for (i = 0; i < 4; i++) | |
1118 | *(iv+i) = ctx->nonce[i]; | |
1119 | for (i = 0; i < 8; i++) | |
1120 | *(iv+4+i) = req->iv[i]; | |
1121 | *((__be32 *)(iv+12)) = counter; | |
1122 | ||
1123 | if ((sg_is_last(req->src)) && (sg_is_last(req->assoc))) { | |
1124 | one_entry_in_sg = 1; | |
1125 | scatterwalk_start(&src_sg_walk, req->src); | |
1126 | scatterwalk_start(&assoc_sg_walk, req->assoc); | |
8fd75e12 CW |
1127 | src = scatterwalk_map(&src_sg_walk); |
1128 | assoc = scatterwalk_map(&assoc_sg_walk); | |
0bd82f5f TS |
1129 | dst = src; |
1130 | if (unlikely(req->src != req->dst)) { | |
1131 | scatterwalk_start(&dst_sg_walk, req->dst); | |
8fd75e12 | 1132 | dst = scatterwalk_map(&dst_sg_walk); |
0bd82f5f TS |
1133 | } |
1134 | ||
1135 | } else { | |
1136 | /* Allocate memory for src, dst, assoc */ | |
1137 | src = kmalloc(req->cryptlen + req->assoclen, GFP_ATOMIC); | |
1138 | if (!src) | |
1139 | return -ENOMEM; | |
1140 | assoc = (src + req->cryptlen + auth_tag_len); | |
1141 | scatterwalk_map_and_copy(src, req->src, 0, req->cryptlen, 0); | |
1142 | scatterwalk_map_and_copy(assoc, req->assoc, 0, | |
1143 | req->assoclen, 0); | |
1144 | dst = src; | |
1145 | } | |
1146 | ||
d764593a | 1147 | aesni_gcm_dec_tfm(aes_ctx, dst, src, tempCipherLen, iv, |
0bd82f5f TS |
1148 | ctx->hash_subkey, assoc, (unsigned long)req->assoclen, |
1149 | authTag, auth_tag_len); | |
1150 | ||
1151 | /* Compare generated tag with passed in tag. */ | |
fed28611 | 1152 | retval = crypto_memneq(src + tempCipherLen, authTag, auth_tag_len) ? |
0bd82f5f TS |
1153 | -EBADMSG : 0; |
1154 | ||
1155 | if (one_entry_in_sg) { | |
1156 | if (unlikely(req->src != req->dst)) { | |
8fd75e12 | 1157 | scatterwalk_unmap(dst); |
0bd82f5f TS |
1158 | scatterwalk_done(&dst_sg_walk, 0, 0); |
1159 | } | |
8fd75e12 CW |
1160 | scatterwalk_unmap(src); |
1161 | scatterwalk_unmap(assoc); | |
0bd82f5f TS |
1162 | scatterwalk_done(&src_sg_walk, 0, 0); |
1163 | scatterwalk_done(&assoc_sg_walk, 0, 0); | |
1164 | } else { | |
1165 | scatterwalk_map_and_copy(dst, req->dst, 0, req->cryptlen, 1); | |
1166 | kfree(src); | |
1167 | } | |
1168 | return retval; | |
1169 | } | |
fa46ccb8 | 1170 | #endif |
0bd82f5f | 1171 | |
fa46ccb8 JK |
1172 | static struct crypto_alg aesni_algs[] = { { |
1173 | .cra_name = "aes", | |
1174 | .cra_driver_name = "aes-aesni", | |
1175 | .cra_priority = 300, | |
1176 | .cra_flags = CRYPTO_ALG_TYPE_CIPHER, | |
1177 | .cra_blocksize = AES_BLOCK_SIZE, | |
1178 | .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
1179 | AESNI_ALIGN - 1, | |
1180 | .cra_alignmask = 0, | |
1181 | .cra_module = THIS_MODULE, | |
1182 | .cra_u = { | |
1183 | .cipher = { | |
1184 | .cia_min_keysize = AES_MIN_KEY_SIZE, | |
1185 | .cia_max_keysize = AES_MAX_KEY_SIZE, | |
1186 | .cia_setkey = aes_set_key, | |
1187 | .cia_encrypt = aes_encrypt, | |
1188 | .cia_decrypt = aes_decrypt | |
1189 | } | |
1190 | } | |
1191 | }, { | |
1192 | .cra_name = "__aes-aesni", | |
1193 | .cra_driver_name = "__driver-aes-aesni", | |
1194 | .cra_priority = 0, | |
1195 | .cra_flags = CRYPTO_ALG_TYPE_CIPHER, | |
1196 | .cra_blocksize = AES_BLOCK_SIZE, | |
1197 | .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
1198 | AESNI_ALIGN - 1, | |
1199 | .cra_alignmask = 0, | |
1200 | .cra_module = THIS_MODULE, | |
1201 | .cra_u = { | |
1202 | .cipher = { | |
1203 | .cia_min_keysize = AES_MIN_KEY_SIZE, | |
1204 | .cia_max_keysize = AES_MAX_KEY_SIZE, | |
1205 | .cia_setkey = aes_set_key, | |
1206 | .cia_encrypt = __aes_encrypt, | |
1207 | .cia_decrypt = __aes_decrypt | |
1208 | } | |
1209 | } | |
1210 | }, { | |
1211 | .cra_name = "__ecb-aes-aesni", | |
1212 | .cra_driver_name = "__driver-ecb-aes-aesni", | |
1213 | .cra_priority = 0, | |
1214 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
1215 | .cra_blocksize = AES_BLOCK_SIZE, | |
1216 | .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
1217 | AESNI_ALIGN - 1, | |
1218 | .cra_alignmask = 0, | |
1219 | .cra_type = &crypto_blkcipher_type, | |
1220 | .cra_module = THIS_MODULE, | |
1221 | .cra_u = { | |
1222 | .blkcipher = { | |
1223 | .min_keysize = AES_MIN_KEY_SIZE, | |
1224 | .max_keysize = AES_MAX_KEY_SIZE, | |
1225 | .setkey = aes_set_key, | |
1226 | .encrypt = ecb_encrypt, | |
1227 | .decrypt = ecb_decrypt, | |
1228 | }, | |
1229 | }, | |
1230 | }, { | |
1231 | .cra_name = "__cbc-aes-aesni", | |
1232 | .cra_driver_name = "__driver-cbc-aes-aesni", | |
1233 | .cra_priority = 0, | |
1234 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
1235 | .cra_blocksize = AES_BLOCK_SIZE, | |
1236 | .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
1237 | AESNI_ALIGN - 1, | |
1238 | .cra_alignmask = 0, | |
1239 | .cra_type = &crypto_blkcipher_type, | |
1240 | .cra_module = THIS_MODULE, | |
1241 | .cra_u = { | |
1242 | .blkcipher = { | |
1243 | .min_keysize = AES_MIN_KEY_SIZE, | |
1244 | .max_keysize = AES_MAX_KEY_SIZE, | |
1245 | .setkey = aes_set_key, | |
1246 | .encrypt = cbc_encrypt, | |
1247 | .decrypt = cbc_decrypt, | |
1248 | }, | |
1249 | }, | |
1250 | }, { | |
1251 | .cra_name = "ecb(aes)", | |
1252 | .cra_driver_name = "ecb-aes-aesni", | |
1253 | .cra_priority = 400, | |
1254 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1255 | .cra_blocksize = AES_BLOCK_SIZE, | |
a9629d71 | 1256 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1257 | .cra_alignmask = 0, |
1258 | .cra_type = &crypto_ablkcipher_type, | |
1259 | .cra_module = THIS_MODULE, | |
1260 | .cra_init = ablk_ecb_init, | |
1261 | .cra_exit = ablk_exit, | |
1262 | .cra_u = { | |
1263 | .ablkcipher = { | |
1264 | .min_keysize = AES_MIN_KEY_SIZE, | |
1265 | .max_keysize = AES_MAX_KEY_SIZE, | |
1266 | .setkey = ablk_set_key, | |
1267 | .encrypt = ablk_encrypt, | |
1268 | .decrypt = ablk_decrypt, | |
1269 | }, | |
1270 | }, | |
1271 | }, { | |
1272 | .cra_name = "cbc(aes)", | |
1273 | .cra_driver_name = "cbc-aes-aesni", | |
1274 | .cra_priority = 400, | |
1275 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1276 | .cra_blocksize = AES_BLOCK_SIZE, | |
a9629d71 | 1277 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1278 | .cra_alignmask = 0, |
1279 | .cra_type = &crypto_ablkcipher_type, | |
1280 | .cra_module = THIS_MODULE, | |
1281 | .cra_init = ablk_cbc_init, | |
1282 | .cra_exit = ablk_exit, | |
1283 | .cra_u = { | |
1284 | .ablkcipher = { | |
1285 | .min_keysize = AES_MIN_KEY_SIZE, | |
1286 | .max_keysize = AES_MAX_KEY_SIZE, | |
1287 | .ivsize = AES_BLOCK_SIZE, | |
1288 | .setkey = ablk_set_key, | |
1289 | .encrypt = ablk_encrypt, | |
1290 | .decrypt = ablk_decrypt, | |
1291 | }, | |
1292 | }, | |
1293 | #ifdef CONFIG_X86_64 | |
1294 | }, { | |
1295 | .cra_name = "__ctr-aes-aesni", | |
1296 | .cra_driver_name = "__driver-ctr-aes-aesni", | |
1297 | .cra_priority = 0, | |
1298 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
1299 | .cra_blocksize = 1, | |
1300 | .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
1301 | AESNI_ALIGN - 1, | |
1302 | .cra_alignmask = 0, | |
1303 | .cra_type = &crypto_blkcipher_type, | |
1304 | .cra_module = THIS_MODULE, | |
1305 | .cra_u = { | |
1306 | .blkcipher = { | |
1307 | .min_keysize = AES_MIN_KEY_SIZE, | |
1308 | .max_keysize = AES_MAX_KEY_SIZE, | |
1309 | .ivsize = AES_BLOCK_SIZE, | |
1310 | .setkey = aes_set_key, | |
1311 | .encrypt = ctr_crypt, | |
1312 | .decrypt = ctr_crypt, | |
1313 | }, | |
1314 | }, | |
1315 | }, { | |
1316 | .cra_name = "ctr(aes)", | |
1317 | .cra_driver_name = "ctr-aes-aesni", | |
1318 | .cra_priority = 400, | |
1319 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1320 | .cra_blocksize = 1, | |
a9629d71 | 1321 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1322 | .cra_alignmask = 0, |
1323 | .cra_type = &crypto_ablkcipher_type, | |
1324 | .cra_module = THIS_MODULE, | |
1325 | .cra_init = ablk_ctr_init, | |
1326 | .cra_exit = ablk_exit, | |
1327 | .cra_u = { | |
1328 | .ablkcipher = { | |
1329 | .min_keysize = AES_MIN_KEY_SIZE, | |
1330 | .max_keysize = AES_MAX_KEY_SIZE, | |
1331 | .ivsize = AES_BLOCK_SIZE, | |
1332 | .setkey = ablk_set_key, | |
1333 | .encrypt = ablk_encrypt, | |
1334 | .decrypt = ablk_encrypt, | |
1335 | .geniv = "chainiv", | |
1336 | }, | |
1337 | }, | |
1338 | }, { | |
1339 | .cra_name = "__gcm-aes-aesni", | |
1340 | .cra_driver_name = "__driver-gcm-aes-aesni", | |
0bd82f5f TS |
1341 | .cra_priority = 0, |
1342 | .cra_flags = CRYPTO_ALG_TYPE_AEAD, | |
1343 | .cra_blocksize = 1, | |
fa46ccb8 JK |
1344 | .cra_ctxsize = sizeof(struct aesni_rfc4106_gcm_ctx) + |
1345 | AESNI_ALIGN, | |
0bd82f5f TS |
1346 | .cra_alignmask = 0, |
1347 | .cra_type = &crypto_aead_type, | |
1348 | .cra_module = THIS_MODULE, | |
0bd82f5f TS |
1349 | .cra_u = { |
1350 | .aead = { | |
1351 | .encrypt = __driver_rfc4106_encrypt, | |
1352 | .decrypt = __driver_rfc4106_decrypt, | |
1353 | }, | |
1354 | }, | |
fa46ccb8 JK |
1355 | }, { |
1356 | .cra_name = "rfc4106(gcm(aes))", | |
1357 | .cra_driver_name = "rfc4106-gcm-aesni", | |
1358 | .cra_priority = 400, | |
1359 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
1360 | .cra_blocksize = 1, | |
1361 | .cra_ctxsize = sizeof(struct aesni_rfc4106_gcm_ctx) + | |
1362 | AESNI_ALIGN, | |
1363 | .cra_alignmask = 0, | |
1364 | .cra_type = &crypto_nivaead_type, | |
1365 | .cra_module = THIS_MODULE, | |
1366 | .cra_init = rfc4106_init, | |
1367 | .cra_exit = rfc4106_exit, | |
1368 | .cra_u = { | |
1369 | .aead = { | |
1370 | .setkey = rfc4106_set_key, | |
1371 | .setauthsize = rfc4106_set_authsize, | |
1372 | .encrypt = rfc4106_encrypt, | |
1373 | .decrypt = rfc4106_decrypt, | |
1374 | .geniv = "seqiv", | |
1375 | .ivsize = 8, | |
1376 | .maxauthsize = 16, | |
1377 | }, | |
1378 | }, | |
fa46ccb8 | 1379 | #endif |
023af608 | 1380 | #ifdef HAS_PCBC |
fa46ccb8 | 1381 | }, { |
023af608 JK |
1382 | .cra_name = "pcbc(aes)", |
1383 | .cra_driver_name = "pcbc-aes-aesni", | |
fa46ccb8 JK |
1384 | .cra_priority = 400, |
1385 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1386 | .cra_blocksize = AES_BLOCK_SIZE, | |
a9629d71 | 1387 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1388 | .cra_alignmask = 0, |
1389 | .cra_type = &crypto_ablkcipher_type, | |
1390 | .cra_module = THIS_MODULE, | |
023af608 | 1391 | .cra_init = ablk_pcbc_init, |
fa46ccb8 JK |
1392 | .cra_exit = ablk_exit, |
1393 | .cra_u = { | |
1394 | .ablkcipher = { | |
023af608 JK |
1395 | .min_keysize = AES_MIN_KEY_SIZE, |
1396 | .max_keysize = AES_MAX_KEY_SIZE, | |
fa46ccb8 JK |
1397 | .ivsize = AES_BLOCK_SIZE, |
1398 | .setkey = ablk_set_key, | |
1399 | .encrypt = ablk_encrypt, | |
1400 | .decrypt = ablk_decrypt, | |
1401 | }, | |
1402 | }, | |
1403 | #endif | |
fa46ccb8 | 1404 | }, { |
023af608 JK |
1405 | .cra_name = "__lrw-aes-aesni", |
1406 | .cra_driver_name = "__driver-lrw-aes-aesni", | |
1407 | .cra_priority = 0, | |
1408 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
1409 | .cra_blocksize = AES_BLOCK_SIZE, | |
1410 | .cra_ctxsize = sizeof(struct aesni_lrw_ctx), | |
1411 | .cra_alignmask = 0, | |
1412 | .cra_type = &crypto_blkcipher_type, | |
1413 | .cra_module = THIS_MODULE, | |
1414 | .cra_exit = lrw_aesni_exit_tfm, | |
1415 | .cra_u = { | |
1416 | .blkcipher = { | |
1417 | .min_keysize = AES_MIN_KEY_SIZE + AES_BLOCK_SIZE, | |
1418 | .max_keysize = AES_MAX_KEY_SIZE + AES_BLOCK_SIZE, | |
1419 | .ivsize = AES_BLOCK_SIZE, | |
1420 | .setkey = lrw_aesni_setkey, | |
1421 | .encrypt = lrw_encrypt, | |
1422 | .decrypt = lrw_decrypt, | |
1423 | }, | |
1424 | }, | |
1425 | }, { | |
1426 | .cra_name = "__xts-aes-aesni", | |
1427 | .cra_driver_name = "__driver-xts-aes-aesni", | |
1428 | .cra_priority = 0, | |
1429 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
1430 | .cra_blocksize = AES_BLOCK_SIZE, | |
1431 | .cra_ctxsize = sizeof(struct aesni_xts_ctx), | |
1432 | .cra_alignmask = 0, | |
1433 | .cra_type = &crypto_blkcipher_type, | |
1434 | .cra_module = THIS_MODULE, | |
1435 | .cra_u = { | |
1436 | .blkcipher = { | |
1437 | .min_keysize = 2 * AES_MIN_KEY_SIZE, | |
1438 | .max_keysize = 2 * AES_MAX_KEY_SIZE, | |
1439 | .ivsize = AES_BLOCK_SIZE, | |
1440 | .setkey = xts_aesni_setkey, | |
1441 | .encrypt = xts_encrypt, | |
1442 | .decrypt = xts_decrypt, | |
1443 | }, | |
1444 | }, | |
1445 | }, { | |
1446 | .cra_name = "lrw(aes)", | |
1447 | .cra_driver_name = "lrw-aes-aesni", | |
fa46ccb8 JK |
1448 | .cra_priority = 400, |
1449 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1450 | .cra_blocksize = AES_BLOCK_SIZE, | |
a9629d71 | 1451 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1452 | .cra_alignmask = 0, |
1453 | .cra_type = &crypto_ablkcipher_type, | |
1454 | .cra_module = THIS_MODULE, | |
023af608 | 1455 | .cra_init = ablk_init, |
fa46ccb8 JK |
1456 | .cra_exit = ablk_exit, |
1457 | .cra_u = { | |
1458 | .ablkcipher = { | |
023af608 JK |
1459 | .min_keysize = AES_MIN_KEY_SIZE + AES_BLOCK_SIZE, |
1460 | .max_keysize = AES_MAX_KEY_SIZE + AES_BLOCK_SIZE, | |
fa46ccb8 JK |
1461 | .ivsize = AES_BLOCK_SIZE, |
1462 | .setkey = ablk_set_key, | |
1463 | .encrypt = ablk_encrypt, | |
1464 | .decrypt = ablk_decrypt, | |
1465 | }, | |
1466 | }, | |
fa46ccb8 JK |
1467 | }, { |
1468 | .cra_name = "xts(aes)", | |
1469 | .cra_driver_name = "xts-aes-aesni", | |
1470 | .cra_priority = 400, | |
1471 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1472 | .cra_blocksize = AES_BLOCK_SIZE, | |
a9629d71 | 1473 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1474 | .cra_alignmask = 0, |
1475 | .cra_type = &crypto_ablkcipher_type, | |
1476 | .cra_module = THIS_MODULE, | |
023af608 | 1477 | .cra_init = ablk_init, |
fa46ccb8 JK |
1478 | .cra_exit = ablk_exit, |
1479 | .cra_u = { | |
1480 | .ablkcipher = { | |
1481 | .min_keysize = 2 * AES_MIN_KEY_SIZE, | |
1482 | .max_keysize = 2 * AES_MAX_KEY_SIZE, | |
1483 | .ivsize = AES_BLOCK_SIZE, | |
1484 | .setkey = ablk_set_key, | |
1485 | .encrypt = ablk_encrypt, | |
1486 | .decrypt = ablk_decrypt, | |
1487 | }, | |
1488 | }, | |
fa46ccb8 | 1489 | } }; |
0bd82f5f | 1490 | |
3bd391f0 AK |
1491 | |
1492 | static const struct x86_cpu_id aesni_cpu_id[] = { | |
1493 | X86_FEATURE_MATCH(X86_FEATURE_AES), | |
1494 | {} | |
1495 | }; | |
1496 | MODULE_DEVICE_TABLE(x86cpu, aesni_cpu_id); | |
1497 | ||
54b6a1bd HY |
1498 | static int __init aesni_init(void) |
1499 | { | |
7af6c245 | 1500 | int err; |
54b6a1bd | 1501 | |
3bd391f0 | 1502 | if (!x86_match_cpu(aesni_cpu_id)) |
54b6a1bd | 1503 | return -ENODEV; |
8610d7bf | 1504 | #ifdef CONFIG_X86_64 |
d764593a TC |
1505 | #ifdef CONFIG_AS_AVX2 |
1506 | if (boot_cpu_has(X86_FEATURE_AVX2)) { | |
1507 | pr_info("AVX2 version of gcm_enc/dec engaged.\n"); | |
1508 | aesni_gcm_enc_tfm = aesni_gcm_enc_avx2; | |
1509 | aesni_gcm_dec_tfm = aesni_gcm_dec_avx2; | |
1510 | } else | |
1511 | #endif | |
1512 | #ifdef CONFIG_AS_AVX | |
1513 | if (boot_cpu_has(X86_FEATURE_AVX)) { | |
1514 | pr_info("AVX version of gcm_enc/dec engaged.\n"); | |
1515 | aesni_gcm_enc_tfm = aesni_gcm_enc_avx; | |
1516 | aesni_gcm_dec_tfm = aesni_gcm_dec_avx; | |
1517 | } else | |
1518 | #endif | |
1519 | { | |
1520 | pr_info("SSE version of gcm_enc/dec engaged.\n"); | |
1521 | aesni_gcm_enc_tfm = aesni_gcm_enc; | |
1522 | aesni_gcm_dec_tfm = aesni_gcm_dec; | |
1523 | } | |
22cddcc7 | 1524 | aesni_ctr_enc_tfm = aesni_ctr_enc; |
7da4b29d | 1525 | #if 0 /* temporary disabled due to failing crypto tests */ |
22cddcc7 | 1526 | if (cpu_has_avx) { |
1527 | /* optimize performance of ctr mode encryption transform */ | |
1528 | aesni_ctr_enc_tfm = aesni_ctr_enc_avx_tfm; | |
1529 | pr_info("AES CTR mode by8 optimization enabled\n"); | |
1530 | } | |
1531 | #endif | |
8610d7bf | 1532 | #endif |
0bd82f5f | 1533 | |
fa46ccb8 JK |
1534 | err = crypto_fpu_init(); |
1535 | if (err) | |
1536 | return err; | |
54b6a1bd | 1537 | |
fa46ccb8 | 1538 | return crypto_register_algs(aesni_algs, ARRAY_SIZE(aesni_algs)); |
54b6a1bd HY |
1539 | } |
1540 | ||
1541 | static void __exit aesni_exit(void) | |
1542 | { | |
fa46ccb8 | 1543 | crypto_unregister_algs(aesni_algs, ARRAY_SIZE(aesni_algs)); |
b23b6451 AL |
1544 | |
1545 | crypto_fpu_exit(); | |
54b6a1bd HY |
1546 | } |
1547 | ||
1548 | module_init(aesni_init); | |
1549 | module_exit(aesni_exit); | |
1550 | ||
1551 | MODULE_DESCRIPTION("Rijndael (AES) Cipher Algorithm, Intel AES-NI instructions optimized"); | |
1552 | MODULE_LICENSE("GPL"); | |
1553 | MODULE_ALIAS("aes"); |