Commit | Line | Data |
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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 | |
e31ac32d | 46 | |
0bd82f5f TS |
47 | /* This data is stored at the end of the crypto_tfm struct. |
48 | * It's a type of per "session" data storage location. | |
49 | * This needs to be 16 byte aligned. | |
50 | */ | |
51 | struct aesni_rfc4106_gcm_ctx { | |
52 | u8 hash_subkey[16]; | |
53 | struct crypto_aes_ctx aes_key_expanded; | |
54 | u8 nonce[4]; | |
55 | struct cryptd_aead *cryptd_tfm; | |
56 | }; | |
57 | ||
58 | struct aesni_gcm_set_hash_subkey_result { | |
59 | int err; | |
60 | struct completion completion; | |
61 | }; | |
62 | ||
63 | struct aesni_hash_subkey_req_data { | |
64 | u8 iv[16]; | |
65 | struct aesni_gcm_set_hash_subkey_result result; | |
66 | struct scatterlist sg; | |
67 | }; | |
68 | ||
69 | #define AESNI_ALIGN (16) | |
54b6a1bd | 70 | #define AES_BLOCK_MASK (~(AES_BLOCK_SIZE-1)) |
0bd82f5f | 71 | #define RFC4106_HASH_SUBKEY_SIZE 16 |
54b6a1bd | 72 | |
023af608 JK |
73 | struct aesni_lrw_ctx { |
74 | struct lrw_table_ctx lrw_table; | |
75 | u8 raw_aes_ctx[sizeof(struct crypto_aes_ctx) + AESNI_ALIGN - 1]; | |
76 | }; | |
77 | ||
78 | struct aesni_xts_ctx { | |
79 | u8 raw_tweak_ctx[sizeof(struct crypto_aes_ctx) + AESNI_ALIGN - 1]; | |
80 | u8 raw_crypt_ctx[sizeof(struct crypto_aes_ctx) + AESNI_ALIGN - 1]; | |
81 | }; | |
82 | ||
54b6a1bd HY |
83 | asmlinkage int aesni_set_key(struct crypto_aes_ctx *ctx, const u8 *in_key, |
84 | unsigned int key_len); | |
85 | asmlinkage void aesni_enc(struct crypto_aes_ctx *ctx, u8 *out, | |
86 | const u8 *in); | |
87 | asmlinkage void aesni_dec(struct crypto_aes_ctx *ctx, u8 *out, | |
88 | const u8 *in); | |
89 | asmlinkage void aesni_ecb_enc(struct crypto_aes_ctx *ctx, u8 *out, | |
90 | const u8 *in, unsigned int len); | |
91 | asmlinkage void aesni_ecb_dec(struct crypto_aes_ctx *ctx, u8 *out, | |
92 | const u8 *in, unsigned int len); | |
93 | asmlinkage void aesni_cbc_enc(struct crypto_aes_ctx *ctx, u8 *out, | |
94 | const u8 *in, unsigned int len, u8 *iv); | |
95 | asmlinkage void aesni_cbc_dec(struct crypto_aes_ctx *ctx, u8 *out, | |
96 | const u8 *in, unsigned int len, u8 *iv); | |
9bed4aca RD |
97 | |
98 | int crypto_fpu_init(void); | |
99 | void crypto_fpu_exit(void); | |
100 | ||
d764593a TC |
101 | #define AVX_GEN2_OPTSIZE 640 |
102 | #define AVX_GEN4_OPTSIZE 4096 | |
103 | ||
0d258efb | 104 | #ifdef CONFIG_X86_64 |
22cddcc7 | 105 | |
106 | static void (*aesni_ctr_enc_tfm)(struct crypto_aes_ctx *ctx, u8 *out, | |
107 | const u8 *in, unsigned int len, u8 *iv); | |
12387a46 HY |
108 | asmlinkage void aesni_ctr_enc(struct crypto_aes_ctx *ctx, u8 *out, |
109 | const u8 *in, unsigned int len, u8 *iv); | |
54b6a1bd | 110 | |
c456a9cd JK |
111 | asmlinkage void aesni_xts_crypt8(struct crypto_aes_ctx *ctx, u8 *out, |
112 | const u8 *in, bool enc, u8 *iv); | |
113 | ||
0bd82f5f TS |
114 | /* asmlinkage void aesni_gcm_enc() |
115 | * void *ctx, AES Key schedule. Starts on a 16 byte boundary. | |
116 | * u8 *out, Ciphertext output. Encrypt in-place is allowed. | |
117 | * const u8 *in, Plaintext input | |
118 | * unsigned long plaintext_len, Length of data in bytes for encryption. | |
119 | * u8 *iv, Pre-counter block j0: 4 byte salt (from Security Association) | |
120 | * concatenated with 8 byte Initialisation Vector (from IPSec ESP | |
121 | * Payload) concatenated with 0x00000001. 16-byte aligned pointer. | |
122 | * u8 *hash_subkey, the Hash sub key input. Data starts on a 16-byte boundary. | |
123 | * const u8 *aad, Additional Authentication Data (AAD) | |
124 | * unsigned long aad_len, Length of AAD in bytes. With RFC4106 this | |
125 | * is going to be 8 or 12 bytes | |
126 | * u8 *auth_tag, Authenticated Tag output. | |
127 | * unsigned long auth_tag_len), Authenticated Tag Length in bytes. | |
128 | * Valid values are 16 (most likely), 12 or 8. | |
129 | */ | |
130 | asmlinkage void aesni_gcm_enc(void *ctx, u8 *out, | |
131 | const u8 *in, unsigned long plaintext_len, u8 *iv, | |
132 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
133 | u8 *auth_tag, unsigned long auth_tag_len); | |
134 | ||
135 | /* asmlinkage void aesni_gcm_dec() | |
136 | * void *ctx, AES Key schedule. Starts on a 16 byte boundary. | |
137 | * u8 *out, Plaintext output. Decrypt in-place is allowed. | |
138 | * const u8 *in, Ciphertext input | |
139 | * unsigned long ciphertext_len, Length of data in bytes for decryption. | |
140 | * u8 *iv, Pre-counter block j0: 4 byte salt (from Security Association) | |
141 | * concatenated with 8 byte Initialisation Vector (from IPSec ESP | |
142 | * Payload) concatenated with 0x00000001. 16-byte aligned pointer. | |
143 | * u8 *hash_subkey, the Hash sub key input. Data starts on a 16-byte boundary. | |
144 | * const u8 *aad, Additional Authentication Data (AAD) | |
145 | * unsigned long aad_len, Length of AAD in bytes. With RFC4106 this is going | |
146 | * to be 8 or 12 bytes | |
147 | * u8 *auth_tag, Authenticated Tag output. | |
148 | * unsigned long auth_tag_len) Authenticated Tag Length in bytes. | |
149 | * Valid values are 16 (most likely), 12 or 8. | |
150 | */ | |
151 | asmlinkage void aesni_gcm_dec(void *ctx, u8 *out, | |
152 | const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
153 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
154 | u8 *auth_tag, unsigned long auth_tag_len); | |
155 | ||
d764593a TC |
156 | |
157 | #ifdef CONFIG_AS_AVX | |
22cddcc7 | 158 | asmlinkage void aes_ctr_enc_128_avx_by8(const u8 *in, u8 *iv, |
159 | void *keys, u8 *out, unsigned int num_bytes); | |
160 | asmlinkage void aes_ctr_enc_192_avx_by8(const u8 *in, u8 *iv, | |
161 | void *keys, u8 *out, unsigned int num_bytes); | |
162 | asmlinkage void aes_ctr_enc_256_avx_by8(const u8 *in, u8 *iv, | |
163 | void *keys, u8 *out, unsigned int num_bytes); | |
d764593a TC |
164 | /* |
165 | * asmlinkage void aesni_gcm_precomp_avx_gen2() | |
166 | * gcm_data *my_ctx_data, context data | |
167 | * u8 *hash_subkey, the Hash sub key input. Data starts on a 16-byte boundary. | |
168 | */ | |
169 | asmlinkage void aesni_gcm_precomp_avx_gen2(void *my_ctx_data, u8 *hash_subkey); | |
170 | ||
171 | asmlinkage void aesni_gcm_enc_avx_gen2(void *ctx, u8 *out, | |
172 | const u8 *in, unsigned long plaintext_len, u8 *iv, | |
173 | const u8 *aad, unsigned long aad_len, | |
174 | u8 *auth_tag, unsigned long auth_tag_len); | |
175 | ||
176 | asmlinkage void aesni_gcm_dec_avx_gen2(void *ctx, u8 *out, | |
177 | const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
178 | const u8 *aad, unsigned long aad_len, | |
179 | u8 *auth_tag, unsigned long auth_tag_len); | |
180 | ||
181 | static void aesni_gcm_enc_avx(void *ctx, u8 *out, | |
182 | const u8 *in, unsigned long plaintext_len, u8 *iv, | |
183 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
184 | u8 *auth_tag, unsigned long auth_tag_len) | |
185 | { | |
e31ac32d TM |
186 | struct crypto_aes_ctx *aes_ctx = (struct crypto_aes_ctx*)ctx; |
187 | if ((plaintext_len < AVX_GEN2_OPTSIZE) || (aes_ctx-> key_length != AES_KEYSIZE_128)){ | |
d764593a TC |
188 | aesni_gcm_enc(ctx, out, in, plaintext_len, iv, hash_subkey, aad, |
189 | aad_len, auth_tag, auth_tag_len); | |
190 | } else { | |
191 | aesni_gcm_precomp_avx_gen2(ctx, hash_subkey); | |
192 | aesni_gcm_enc_avx_gen2(ctx, out, in, plaintext_len, iv, aad, | |
193 | aad_len, auth_tag, auth_tag_len); | |
194 | } | |
195 | } | |
196 | ||
197 | static void aesni_gcm_dec_avx(void *ctx, u8 *out, | |
198 | const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
199 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
200 | u8 *auth_tag, unsigned long auth_tag_len) | |
201 | { | |
e31ac32d TM |
202 | struct crypto_aes_ctx *aes_ctx = (struct crypto_aes_ctx*)ctx; |
203 | if ((ciphertext_len < AVX_GEN2_OPTSIZE) || (aes_ctx-> key_length != AES_KEYSIZE_128)) { | |
d764593a TC |
204 | aesni_gcm_dec(ctx, out, in, ciphertext_len, iv, hash_subkey, aad, |
205 | aad_len, auth_tag, auth_tag_len); | |
206 | } else { | |
207 | aesni_gcm_precomp_avx_gen2(ctx, hash_subkey); | |
208 | aesni_gcm_dec_avx_gen2(ctx, out, in, ciphertext_len, iv, aad, | |
209 | aad_len, auth_tag, auth_tag_len); | |
210 | } | |
211 | } | |
212 | #endif | |
213 | ||
214 | #ifdef CONFIG_AS_AVX2 | |
215 | /* | |
216 | * asmlinkage void aesni_gcm_precomp_avx_gen4() | |
217 | * gcm_data *my_ctx_data, context data | |
218 | * u8 *hash_subkey, the Hash sub key input. Data starts on a 16-byte boundary. | |
219 | */ | |
220 | asmlinkage void aesni_gcm_precomp_avx_gen4(void *my_ctx_data, u8 *hash_subkey); | |
221 | ||
222 | asmlinkage void aesni_gcm_enc_avx_gen4(void *ctx, u8 *out, | |
223 | const u8 *in, unsigned long plaintext_len, u8 *iv, | |
224 | const u8 *aad, unsigned long aad_len, | |
225 | u8 *auth_tag, unsigned long auth_tag_len); | |
226 | ||
227 | asmlinkage void aesni_gcm_dec_avx_gen4(void *ctx, u8 *out, | |
228 | const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
229 | const u8 *aad, unsigned long aad_len, | |
230 | u8 *auth_tag, unsigned long auth_tag_len); | |
231 | ||
232 | static void aesni_gcm_enc_avx2(void *ctx, u8 *out, | |
233 | const u8 *in, unsigned long plaintext_len, u8 *iv, | |
234 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
235 | u8 *auth_tag, unsigned long auth_tag_len) | |
236 | { | |
e31ac32d TM |
237 | struct crypto_aes_ctx *aes_ctx = (struct crypto_aes_ctx*)ctx; |
238 | if ((plaintext_len < AVX_GEN2_OPTSIZE) || (aes_ctx-> key_length != AES_KEYSIZE_128)) { | |
d764593a TC |
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 | { | |
e31ac32d TM |
257 | struct crypto_aes_ctx *aes_ctx = (struct crypto_aes_ctx*)ctx; |
258 | if ((ciphertext_len < AVX_GEN2_OPTSIZE) || (aes_ctx-> key_length != AES_KEYSIZE_128)) { | |
d764593a TC |
259 | aesni_gcm_dec(ctx, out, in, ciphertext_len, iv, hash_subkey, |
260 | aad, aad_len, auth_tag, auth_tag_len); | |
261 | } else if (ciphertext_len < AVX_GEN4_OPTSIZE) { | |
262 | aesni_gcm_precomp_avx_gen2(ctx, hash_subkey); | |
263 | aesni_gcm_dec_avx_gen2(ctx, out, in, ciphertext_len, iv, aad, | |
264 | aad_len, auth_tag, auth_tag_len); | |
265 | } else { | |
266 | aesni_gcm_precomp_avx_gen4(ctx, hash_subkey); | |
267 | aesni_gcm_dec_avx_gen4(ctx, out, in, ciphertext_len, iv, aad, | |
268 | aad_len, auth_tag, auth_tag_len); | |
269 | } | |
270 | } | |
271 | #endif | |
272 | ||
273 | static void (*aesni_gcm_enc_tfm)(void *ctx, u8 *out, | |
274 | const u8 *in, unsigned long plaintext_len, u8 *iv, | |
275 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
276 | u8 *auth_tag, unsigned long auth_tag_len); | |
277 | ||
278 | static void (*aesni_gcm_dec_tfm)(void *ctx, u8 *out, | |
279 | const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
280 | u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
281 | u8 *auth_tag, unsigned long auth_tag_len); | |
282 | ||
0bd82f5f TS |
283 | static inline struct |
284 | aesni_rfc4106_gcm_ctx *aesni_rfc4106_gcm_ctx_get(struct crypto_aead *tfm) | |
285 | { | |
286 | return | |
287 | (struct aesni_rfc4106_gcm_ctx *) | |
288 | PTR_ALIGN((u8 *) | |
289 | crypto_tfm_ctx(crypto_aead_tfm(tfm)), AESNI_ALIGN); | |
290 | } | |
559ad0ff | 291 | #endif |
0bd82f5f | 292 | |
54b6a1bd HY |
293 | static inline struct crypto_aes_ctx *aes_ctx(void *raw_ctx) |
294 | { | |
295 | unsigned long addr = (unsigned long)raw_ctx; | |
296 | unsigned long align = AESNI_ALIGN; | |
297 | ||
298 | if (align <= crypto_tfm_ctx_alignment()) | |
299 | align = 1; | |
300 | return (struct crypto_aes_ctx *)ALIGN(addr, align); | |
301 | } | |
302 | ||
303 | static int aes_set_key_common(struct crypto_tfm *tfm, void *raw_ctx, | |
304 | const u8 *in_key, unsigned int key_len) | |
305 | { | |
306 | struct crypto_aes_ctx *ctx = aes_ctx(raw_ctx); | |
307 | u32 *flags = &tfm->crt_flags; | |
308 | int err; | |
309 | ||
310 | if (key_len != AES_KEYSIZE_128 && key_len != AES_KEYSIZE_192 && | |
311 | key_len != AES_KEYSIZE_256) { | |
312 | *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; | |
313 | return -EINVAL; | |
314 | } | |
315 | ||
13b79b97 | 316 | if (!irq_fpu_usable()) |
54b6a1bd HY |
317 | err = crypto_aes_expand_key(ctx, in_key, key_len); |
318 | else { | |
319 | kernel_fpu_begin(); | |
320 | err = aesni_set_key(ctx, in_key, key_len); | |
321 | kernel_fpu_end(); | |
322 | } | |
323 | ||
324 | return err; | |
325 | } | |
326 | ||
327 | static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key, | |
328 | unsigned int key_len) | |
329 | { | |
330 | return aes_set_key_common(tfm, crypto_tfm_ctx(tfm), in_key, key_len); | |
331 | } | |
332 | ||
333 | static void aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
334 | { | |
335 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); | |
336 | ||
13b79b97 | 337 | if (!irq_fpu_usable()) |
54b6a1bd HY |
338 | crypto_aes_encrypt_x86(ctx, dst, src); |
339 | else { | |
340 | kernel_fpu_begin(); | |
341 | aesni_enc(ctx, dst, src); | |
342 | kernel_fpu_end(); | |
343 | } | |
344 | } | |
345 | ||
346 | static void aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
347 | { | |
348 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); | |
349 | ||
13b79b97 | 350 | if (!irq_fpu_usable()) |
54b6a1bd HY |
351 | crypto_aes_decrypt_x86(ctx, dst, src); |
352 | else { | |
353 | kernel_fpu_begin(); | |
354 | aesni_dec(ctx, dst, src); | |
355 | kernel_fpu_end(); | |
356 | } | |
357 | } | |
358 | ||
2cf4ac8b HY |
359 | static void __aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) |
360 | { | |
361 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); | |
362 | ||
363 | aesni_enc(ctx, dst, src); | |
364 | } | |
365 | ||
366 | static void __aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
367 | { | |
368 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); | |
369 | ||
370 | aesni_dec(ctx, dst, src); | |
371 | } | |
372 | ||
54b6a1bd HY |
373 | static int ecb_encrypt(struct blkcipher_desc *desc, |
374 | struct scatterlist *dst, struct scatterlist *src, | |
375 | unsigned int nbytes) | |
376 | { | |
377 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
378 | struct blkcipher_walk walk; | |
379 | int err; | |
380 | ||
381 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
382 | err = blkcipher_walk_virt(desc, &walk); | |
9251b64f | 383 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
54b6a1bd HY |
384 | |
385 | kernel_fpu_begin(); | |
386 | while ((nbytes = walk.nbytes)) { | |
387 | aesni_ecb_enc(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
388 | nbytes & AES_BLOCK_MASK); | |
389 | nbytes &= AES_BLOCK_SIZE - 1; | |
390 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
391 | } | |
392 | kernel_fpu_end(); | |
393 | ||
394 | return err; | |
395 | } | |
396 | ||
397 | static int ecb_decrypt(struct blkcipher_desc *desc, | |
398 | struct scatterlist *dst, struct scatterlist *src, | |
399 | unsigned int nbytes) | |
400 | { | |
401 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
402 | struct blkcipher_walk walk; | |
403 | int err; | |
404 | ||
405 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
406 | err = blkcipher_walk_virt(desc, &walk); | |
9251b64f | 407 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
54b6a1bd HY |
408 | |
409 | kernel_fpu_begin(); | |
410 | while ((nbytes = walk.nbytes)) { | |
411 | aesni_ecb_dec(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
412 | nbytes & AES_BLOCK_MASK); | |
413 | nbytes &= AES_BLOCK_SIZE - 1; | |
414 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
415 | } | |
416 | kernel_fpu_end(); | |
417 | ||
418 | return err; | |
419 | } | |
420 | ||
54b6a1bd HY |
421 | static int cbc_encrypt(struct blkcipher_desc *desc, |
422 | struct scatterlist *dst, struct scatterlist *src, | |
423 | unsigned int nbytes) | |
424 | { | |
425 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
426 | struct blkcipher_walk walk; | |
427 | int err; | |
428 | ||
429 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
430 | err = blkcipher_walk_virt(desc, &walk); | |
9251b64f | 431 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
54b6a1bd HY |
432 | |
433 | kernel_fpu_begin(); | |
434 | while ((nbytes = walk.nbytes)) { | |
435 | aesni_cbc_enc(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
436 | nbytes & AES_BLOCK_MASK, walk.iv); | |
437 | nbytes &= AES_BLOCK_SIZE - 1; | |
438 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
439 | } | |
440 | kernel_fpu_end(); | |
441 | ||
442 | return err; | |
443 | } | |
444 | ||
445 | static int cbc_decrypt(struct blkcipher_desc *desc, | |
446 | struct scatterlist *dst, struct scatterlist *src, | |
447 | unsigned int nbytes) | |
448 | { | |
449 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
450 | struct blkcipher_walk walk; | |
451 | int err; | |
452 | ||
453 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
454 | err = blkcipher_walk_virt(desc, &walk); | |
9251b64f | 455 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
54b6a1bd HY |
456 | |
457 | kernel_fpu_begin(); | |
458 | while ((nbytes = walk.nbytes)) { | |
459 | aesni_cbc_dec(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
460 | nbytes & AES_BLOCK_MASK, walk.iv); | |
461 | nbytes &= AES_BLOCK_SIZE - 1; | |
462 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
463 | } | |
464 | kernel_fpu_end(); | |
465 | ||
466 | return err; | |
467 | } | |
468 | ||
0d258efb | 469 | #ifdef CONFIG_X86_64 |
12387a46 HY |
470 | static void ctr_crypt_final(struct crypto_aes_ctx *ctx, |
471 | struct blkcipher_walk *walk) | |
472 | { | |
473 | u8 *ctrblk = walk->iv; | |
474 | u8 keystream[AES_BLOCK_SIZE]; | |
475 | u8 *src = walk->src.virt.addr; | |
476 | u8 *dst = walk->dst.virt.addr; | |
477 | unsigned int nbytes = walk->nbytes; | |
478 | ||
479 | aesni_enc(ctx, keystream, ctrblk); | |
480 | crypto_xor(keystream, src, nbytes); | |
481 | memcpy(dst, keystream, nbytes); | |
482 | crypto_inc(ctrblk, AES_BLOCK_SIZE); | |
483 | } | |
484 | ||
5cfed7b3 | 485 | #ifdef CONFIG_AS_AVX |
22cddcc7 | 486 | static void aesni_ctr_enc_avx_tfm(struct crypto_aes_ctx *ctx, u8 *out, |
487 | const u8 *in, unsigned int len, u8 *iv) | |
488 | { | |
489 | /* | |
490 | * based on key length, override with the by8 version | |
491 | * of ctr mode encryption/decryption for improved performance | |
492 | * aes_set_key_common() ensures that key length is one of | |
493 | * {128,192,256} | |
494 | */ | |
495 | if (ctx->key_length == AES_KEYSIZE_128) | |
496 | aes_ctr_enc_128_avx_by8(in, iv, (void *)ctx, out, len); | |
497 | else if (ctx->key_length == AES_KEYSIZE_192) | |
498 | aes_ctr_enc_192_avx_by8(in, iv, (void *)ctx, out, len); | |
499 | else | |
500 | aes_ctr_enc_256_avx_by8(in, iv, (void *)ctx, out, len); | |
501 | } | |
502 | #endif | |
503 | ||
12387a46 HY |
504 | static int ctr_crypt(struct blkcipher_desc *desc, |
505 | struct scatterlist *dst, struct scatterlist *src, | |
506 | unsigned int nbytes) | |
507 | { | |
508 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
509 | struct blkcipher_walk walk; | |
510 | int err; | |
511 | ||
512 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
513 | err = blkcipher_walk_virt_block(desc, &walk, AES_BLOCK_SIZE); | |
514 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
515 | ||
516 | kernel_fpu_begin(); | |
517 | while ((nbytes = walk.nbytes) >= AES_BLOCK_SIZE) { | |
22cddcc7 | 518 | aesni_ctr_enc_tfm(ctx, walk.dst.virt.addr, walk.src.virt.addr, |
e31ac32d | 519 | nbytes & AES_BLOCK_MASK, walk.iv); |
12387a46 HY |
520 | nbytes &= AES_BLOCK_SIZE - 1; |
521 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
522 | } | |
523 | if (walk.nbytes) { | |
524 | ctr_crypt_final(ctx, &walk); | |
525 | err = blkcipher_walk_done(desc, &walk, 0); | |
526 | } | |
527 | kernel_fpu_end(); | |
528 | ||
529 | return err; | |
530 | } | |
0d258efb | 531 | #endif |
12387a46 | 532 | |
54b6a1bd HY |
533 | static int ablk_ecb_init(struct crypto_tfm *tfm) |
534 | { | |
ef45b834 | 535 | return ablk_init_common(tfm, "__driver-ecb-aes-aesni"); |
54b6a1bd HY |
536 | } |
537 | ||
54b6a1bd HY |
538 | static int ablk_cbc_init(struct crypto_tfm *tfm) |
539 | { | |
ef45b834 | 540 | return ablk_init_common(tfm, "__driver-cbc-aes-aesni"); |
54b6a1bd HY |
541 | } |
542 | ||
0d258efb | 543 | #ifdef CONFIG_X86_64 |
2cf4ac8b HY |
544 | static int ablk_ctr_init(struct crypto_tfm *tfm) |
545 | { | |
ef45b834 | 546 | return ablk_init_common(tfm, "__driver-ctr-aes-aesni"); |
2cf4ac8b HY |
547 | } |
548 | ||
0d258efb | 549 | #endif |
2cf4ac8b | 550 | |
304576a7 | 551 | #if IS_ENABLED(CONFIG_CRYPTO_PCBC) |
2cf4ac8b HY |
552 | static int ablk_pcbc_init(struct crypto_tfm *tfm) |
553 | { | |
ef45b834 | 554 | return ablk_init_common(tfm, "fpu(pcbc(__driver-aes-aesni))"); |
2cf4ac8b | 555 | } |
2cf4ac8b HY |
556 | #endif |
557 | ||
023af608 | 558 | static void lrw_xts_encrypt_callback(void *ctx, u8 *blks, unsigned int nbytes) |
2cf4ac8b | 559 | { |
023af608 JK |
560 | aesni_ecb_enc(ctx, blks, blks, nbytes); |
561 | } | |
562 | ||
563 | static void lrw_xts_decrypt_callback(void *ctx, u8 *blks, unsigned int nbytes) | |
564 | { | |
565 | aesni_ecb_dec(ctx, blks, blks, nbytes); | |
566 | } | |
567 | ||
568 | static int lrw_aesni_setkey(struct crypto_tfm *tfm, const u8 *key, | |
569 | unsigned int keylen) | |
570 | { | |
571 | struct aesni_lrw_ctx *ctx = crypto_tfm_ctx(tfm); | |
572 | int err; | |
573 | ||
574 | err = aes_set_key_common(tfm, ctx->raw_aes_ctx, key, | |
575 | keylen - AES_BLOCK_SIZE); | |
576 | if (err) | |
577 | return err; | |
578 | ||
579 | return lrw_init_table(&ctx->lrw_table, key + keylen - AES_BLOCK_SIZE); | |
580 | } | |
581 | ||
582 | static void lrw_aesni_exit_tfm(struct crypto_tfm *tfm) | |
583 | { | |
584 | struct aesni_lrw_ctx *ctx = crypto_tfm_ctx(tfm); | |
585 | ||
586 | lrw_free_table(&ctx->lrw_table); | |
587 | } | |
588 | ||
589 | static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
590 | struct scatterlist *src, unsigned int nbytes) | |
591 | { | |
592 | struct aesni_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
593 | be128 buf[8]; | |
594 | struct lrw_crypt_req req = { | |
595 | .tbuf = buf, | |
596 | .tbuflen = sizeof(buf), | |
597 | ||
598 | .table_ctx = &ctx->lrw_table, | |
599 | .crypt_ctx = aes_ctx(ctx->raw_aes_ctx), | |
600 | .crypt_fn = lrw_xts_encrypt_callback, | |
601 | }; | |
602 | int ret; | |
603 | ||
604 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
605 | ||
606 | kernel_fpu_begin(); | |
607 | ret = lrw_crypt(desc, dst, src, nbytes, &req); | |
608 | kernel_fpu_end(); | |
609 | ||
610 | return ret; | |
611 | } | |
612 | ||
613 | static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
614 | struct scatterlist *src, unsigned int nbytes) | |
615 | { | |
616 | struct aesni_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
617 | be128 buf[8]; | |
618 | struct lrw_crypt_req req = { | |
619 | .tbuf = buf, | |
620 | .tbuflen = sizeof(buf), | |
621 | ||
622 | .table_ctx = &ctx->lrw_table, | |
623 | .crypt_ctx = aes_ctx(ctx->raw_aes_ctx), | |
624 | .crypt_fn = lrw_xts_decrypt_callback, | |
625 | }; | |
626 | int ret; | |
627 | ||
628 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
629 | ||
630 | kernel_fpu_begin(); | |
631 | ret = lrw_crypt(desc, dst, src, nbytes, &req); | |
632 | kernel_fpu_end(); | |
633 | ||
634 | return ret; | |
635 | } | |
636 | ||
637 | static int xts_aesni_setkey(struct crypto_tfm *tfm, const u8 *key, | |
638 | unsigned int keylen) | |
639 | { | |
640 | struct aesni_xts_ctx *ctx = crypto_tfm_ctx(tfm); | |
641 | u32 *flags = &tfm->crt_flags; | |
642 | int err; | |
643 | ||
644 | /* key consists of keys of equal size concatenated, therefore | |
645 | * the length must be even | |
646 | */ | |
647 | if (keylen % 2) { | |
648 | *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; | |
649 | return -EINVAL; | |
650 | } | |
651 | ||
652 | /* first half of xts-key is for crypt */ | |
653 | err = aes_set_key_common(tfm, ctx->raw_crypt_ctx, key, keylen / 2); | |
654 | if (err) | |
655 | return err; | |
656 | ||
657 | /* second half of xts-key is for tweak */ | |
658 | return aes_set_key_common(tfm, ctx->raw_tweak_ctx, key + keylen / 2, | |
659 | keylen / 2); | |
660 | } | |
661 | ||
662 | ||
32bec973 JK |
663 | static void aesni_xts_tweak(void *ctx, u8 *out, const u8 *in) |
664 | { | |
665 | aesni_enc(ctx, out, in); | |
666 | } | |
667 | ||
c456a9cd JK |
668 | #ifdef CONFIG_X86_64 |
669 | ||
670 | static void aesni_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
671 | { | |
672 | glue_xts_crypt_128bit_one(ctx, dst, src, iv, GLUE_FUNC_CAST(aesni_enc)); | |
673 | } | |
674 | ||
675 | static void aesni_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
676 | { | |
677 | glue_xts_crypt_128bit_one(ctx, dst, src, iv, GLUE_FUNC_CAST(aesni_dec)); | |
678 | } | |
679 | ||
680 | static void aesni_xts_enc8(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
681 | { | |
682 | aesni_xts_crypt8(ctx, (u8 *)dst, (const u8 *)src, true, (u8 *)iv); | |
683 | } | |
684 | ||
685 | static void aesni_xts_dec8(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
686 | { | |
687 | aesni_xts_crypt8(ctx, (u8 *)dst, (const u8 *)src, false, (u8 *)iv); | |
688 | } | |
689 | ||
690 | static const struct common_glue_ctx aesni_enc_xts = { | |
691 | .num_funcs = 2, | |
692 | .fpu_blocks_limit = 1, | |
693 | ||
694 | .funcs = { { | |
695 | .num_blocks = 8, | |
696 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(aesni_xts_enc8) } | |
697 | }, { | |
698 | .num_blocks = 1, | |
699 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(aesni_xts_enc) } | |
700 | } } | |
701 | }; | |
702 | ||
703 | static const struct common_glue_ctx aesni_dec_xts = { | |
704 | .num_funcs = 2, | |
705 | .fpu_blocks_limit = 1, | |
706 | ||
707 | .funcs = { { | |
708 | .num_blocks = 8, | |
709 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(aesni_xts_dec8) } | |
710 | }, { | |
711 | .num_blocks = 1, | |
712 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(aesni_xts_dec) } | |
713 | } } | |
714 | }; | |
715 | ||
716 | static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
717 | struct scatterlist *src, unsigned int nbytes) | |
718 | { | |
719 | struct aesni_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
720 | ||
721 | return glue_xts_crypt_128bit(&aesni_enc_xts, desc, dst, src, nbytes, | |
722 | XTS_TWEAK_CAST(aesni_xts_tweak), | |
723 | aes_ctx(ctx->raw_tweak_ctx), | |
724 | aes_ctx(ctx->raw_crypt_ctx)); | |
725 | } | |
726 | ||
727 | static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
728 | struct scatterlist *src, unsigned int nbytes) | |
729 | { | |
730 | struct aesni_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
731 | ||
732 | return glue_xts_crypt_128bit(&aesni_dec_xts, desc, dst, src, nbytes, | |
733 | XTS_TWEAK_CAST(aesni_xts_tweak), | |
734 | aes_ctx(ctx->raw_tweak_ctx), | |
735 | aes_ctx(ctx->raw_crypt_ctx)); | |
736 | } | |
737 | ||
738 | #else | |
739 | ||
023af608 JK |
740 | static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, |
741 | struct scatterlist *src, unsigned int nbytes) | |
742 | { | |
743 | struct aesni_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
744 | be128 buf[8]; | |
745 | struct xts_crypt_req req = { | |
746 | .tbuf = buf, | |
747 | .tbuflen = sizeof(buf), | |
748 | ||
749 | .tweak_ctx = aes_ctx(ctx->raw_tweak_ctx), | |
32bec973 | 750 | .tweak_fn = aesni_xts_tweak, |
023af608 JK |
751 | .crypt_ctx = aes_ctx(ctx->raw_crypt_ctx), |
752 | .crypt_fn = lrw_xts_encrypt_callback, | |
753 | }; | |
754 | int ret; | |
755 | ||
756 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
757 | ||
758 | kernel_fpu_begin(); | |
759 | ret = xts_crypt(desc, dst, src, nbytes, &req); | |
760 | kernel_fpu_end(); | |
761 | ||
762 | return ret; | |
763 | } | |
764 | ||
765 | static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
766 | struct scatterlist *src, unsigned int nbytes) | |
767 | { | |
768 | struct aesni_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
769 | be128 buf[8]; | |
770 | struct xts_crypt_req req = { | |
771 | .tbuf = buf, | |
772 | .tbuflen = sizeof(buf), | |
773 | ||
774 | .tweak_ctx = aes_ctx(ctx->raw_tweak_ctx), | |
32bec973 | 775 | .tweak_fn = aesni_xts_tweak, |
023af608 JK |
776 | .crypt_ctx = aes_ctx(ctx->raw_crypt_ctx), |
777 | .crypt_fn = lrw_xts_decrypt_callback, | |
778 | }; | |
779 | int ret; | |
780 | ||
781 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
782 | ||
783 | kernel_fpu_begin(); | |
784 | ret = xts_crypt(desc, dst, src, nbytes, &req); | |
785 | kernel_fpu_end(); | |
786 | ||
787 | return ret; | |
2cf4ac8b | 788 | } |
2cf4ac8b | 789 | |
c456a9cd JK |
790 | #endif |
791 | ||
559ad0ff | 792 | #ifdef CONFIG_X86_64 |
0bd82f5f TS |
793 | static int rfc4106_init(struct crypto_tfm *tfm) |
794 | { | |
795 | struct cryptd_aead *cryptd_tfm; | |
796 | struct aesni_rfc4106_gcm_ctx *ctx = (struct aesni_rfc4106_gcm_ctx *) | |
797 | PTR_ALIGN((u8 *)crypto_tfm_ctx(tfm), AESNI_ALIGN); | |
60af520c TS |
798 | struct crypto_aead *cryptd_child; |
799 | struct aesni_rfc4106_gcm_ctx *child_ctx; | |
0bd82f5f TS |
800 | cryptd_tfm = cryptd_alloc_aead("__driver-gcm-aes-aesni", 0, 0); |
801 | if (IS_ERR(cryptd_tfm)) | |
802 | return PTR_ERR(cryptd_tfm); | |
60af520c TS |
803 | |
804 | cryptd_child = cryptd_aead_child(cryptd_tfm); | |
805 | child_ctx = aesni_rfc4106_gcm_ctx_get(cryptd_child); | |
806 | memcpy(child_ctx, ctx, sizeof(*ctx)); | |
0bd82f5f TS |
807 | ctx->cryptd_tfm = cryptd_tfm; |
808 | tfm->crt_aead.reqsize = sizeof(struct aead_request) | |
809 | + crypto_aead_reqsize(&cryptd_tfm->base); | |
810 | return 0; | |
811 | } | |
812 | ||
813 | static void rfc4106_exit(struct crypto_tfm *tfm) | |
814 | { | |
815 | struct aesni_rfc4106_gcm_ctx *ctx = | |
816 | (struct aesni_rfc4106_gcm_ctx *) | |
817 | PTR_ALIGN((u8 *)crypto_tfm_ctx(tfm), AESNI_ALIGN); | |
818 | if (!IS_ERR(ctx->cryptd_tfm)) | |
819 | cryptd_free_aead(ctx->cryptd_tfm); | |
820 | return; | |
821 | } | |
822 | ||
823 | static void | |
824 | rfc4106_set_hash_subkey_done(struct crypto_async_request *req, int err) | |
825 | { | |
826 | struct aesni_gcm_set_hash_subkey_result *result = req->data; | |
827 | ||
828 | if (err == -EINPROGRESS) | |
829 | return; | |
830 | result->err = err; | |
831 | complete(&result->completion); | |
832 | } | |
833 | ||
834 | static int | |
835 | rfc4106_set_hash_subkey(u8 *hash_subkey, const u8 *key, unsigned int key_len) | |
836 | { | |
837 | struct crypto_ablkcipher *ctr_tfm; | |
838 | struct ablkcipher_request *req; | |
839 | int ret = -EINVAL; | |
840 | struct aesni_hash_subkey_req_data *req_data; | |
841 | ||
842 | ctr_tfm = crypto_alloc_ablkcipher("ctr(aes)", 0, 0); | |
843 | if (IS_ERR(ctr_tfm)) | |
844 | return PTR_ERR(ctr_tfm); | |
845 | ||
846 | crypto_ablkcipher_clear_flags(ctr_tfm, ~0); | |
847 | ||
848 | ret = crypto_ablkcipher_setkey(ctr_tfm, key, key_len); | |
7efd95f6 | 849 | if (ret) |
fc9044e2 | 850 | goto out_free_ablkcipher; |
0bd82f5f | 851 | |
fc9044e2 | 852 | ret = -ENOMEM; |
0bd82f5f | 853 | req = ablkcipher_request_alloc(ctr_tfm, GFP_KERNEL); |
fc9044e2 | 854 | if (!req) |
7efd95f6 | 855 | goto out_free_ablkcipher; |
0bd82f5f TS |
856 | |
857 | req_data = kmalloc(sizeof(*req_data), GFP_KERNEL); | |
fc9044e2 | 858 | if (!req_data) |
7efd95f6 | 859 | goto out_free_request; |
fc9044e2 | 860 | |
0bd82f5f TS |
861 | memset(req_data->iv, 0, sizeof(req_data->iv)); |
862 | ||
863 | /* Clear the data in the hash sub key container to zero.*/ | |
864 | /* We want to cipher all zeros to create the hash sub key. */ | |
865 | memset(hash_subkey, 0, RFC4106_HASH_SUBKEY_SIZE); | |
866 | ||
867 | init_completion(&req_data->result.completion); | |
868 | sg_init_one(&req_data->sg, hash_subkey, RFC4106_HASH_SUBKEY_SIZE); | |
869 | ablkcipher_request_set_tfm(req, ctr_tfm); | |
870 | ablkcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_SLEEP | | |
871 | CRYPTO_TFM_REQ_MAY_BACKLOG, | |
872 | rfc4106_set_hash_subkey_done, | |
873 | &req_data->result); | |
874 | ||
875 | ablkcipher_request_set_crypt(req, &req_data->sg, | |
876 | &req_data->sg, RFC4106_HASH_SUBKEY_SIZE, req_data->iv); | |
877 | ||
878 | ret = crypto_ablkcipher_encrypt(req); | |
879 | if (ret == -EINPROGRESS || ret == -EBUSY) { | |
880 | ret = wait_for_completion_interruptible | |
881 | (&req_data->result.completion); | |
882 | if (!ret) | |
883 | ret = req_data->result.err; | |
884 | } | |
fc9044e2 | 885 | kfree(req_data); |
7efd95f6 | 886 | out_free_request: |
0bd82f5f | 887 | ablkcipher_request_free(req); |
7efd95f6 | 888 | out_free_ablkcipher: |
0bd82f5f TS |
889 | crypto_free_ablkcipher(ctr_tfm); |
890 | return ret; | |
891 | } | |
892 | ||
893 | static int rfc4106_set_key(struct crypto_aead *parent, const u8 *key, | |
894 | unsigned int key_len) | |
895 | { | |
896 | int ret = 0; | |
897 | struct crypto_tfm *tfm = crypto_aead_tfm(parent); | |
898 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(parent); | |
60af520c TS |
899 | struct crypto_aead *cryptd_child = cryptd_aead_child(ctx->cryptd_tfm); |
900 | struct aesni_rfc4106_gcm_ctx *child_ctx = | |
901 | aesni_rfc4106_gcm_ctx_get(cryptd_child); | |
bf084d8f | 902 | u8 *new_key_align, *new_key_mem = NULL; |
0bd82f5f TS |
903 | |
904 | if (key_len < 4) { | |
905 | crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
906 | return -EINVAL; | |
907 | } | |
908 | /*Account for 4 byte nonce at the end.*/ | |
909 | key_len -= 4; | |
e31ac32d TM |
910 | if (key_len != AES_KEYSIZE_128 && key_len != AES_KEYSIZE_192 && |
911 | key_len != AES_KEYSIZE_256) { | |
0bd82f5f TS |
912 | crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); |
913 | return -EINVAL; | |
914 | } | |
915 | ||
916 | memcpy(ctx->nonce, key + key_len, sizeof(ctx->nonce)); | |
917 | /*This must be on a 16 byte boundary!*/ | |
918 | if ((unsigned long)(&(ctx->aes_key_expanded.key_enc[0])) % AESNI_ALIGN) | |
919 | return -EINVAL; | |
920 | ||
921 | if ((unsigned long)key % AESNI_ALIGN) { | |
922 | /*key is not aligned: use an auxuliar aligned pointer*/ | |
923 | new_key_mem = kmalloc(key_len+AESNI_ALIGN, GFP_KERNEL); | |
924 | if (!new_key_mem) | |
925 | return -ENOMEM; | |
926 | ||
bf084d8f MB |
927 | new_key_align = PTR_ALIGN(new_key_mem, AESNI_ALIGN); |
928 | memcpy(new_key_align, key, key_len); | |
929 | key = new_key_align; | |
0bd82f5f TS |
930 | } |
931 | ||
932 | if (!irq_fpu_usable()) | |
933 | ret = crypto_aes_expand_key(&(ctx->aes_key_expanded), | |
934 | key, key_len); | |
935 | else { | |
936 | kernel_fpu_begin(); | |
937 | ret = aesni_set_key(&(ctx->aes_key_expanded), key, key_len); | |
938 | kernel_fpu_end(); | |
939 | } | |
940 | /*This must be on a 16 byte boundary!*/ | |
941 | if ((unsigned long)(&(ctx->hash_subkey[0])) % AESNI_ALIGN) { | |
942 | ret = -EINVAL; | |
943 | goto exit; | |
944 | } | |
945 | ret = rfc4106_set_hash_subkey(ctx->hash_subkey, key, key_len); | |
60af520c | 946 | memcpy(child_ctx, ctx, sizeof(*ctx)); |
0bd82f5f TS |
947 | exit: |
948 | kfree(new_key_mem); | |
949 | return ret; | |
950 | } | |
951 | ||
952 | /* This is the Integrity Check Value (aka the authentication tag length and can | |
953 | * be 8, 12 or 16 bytes long. */ | |
954 | static int rfc4106_set_authsize(struct crypto_aead *parent, | |
955 | unsigned int authsize) | |
956 | { | |
957 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(parent); | |
958 | struct crypto_aead *cryptd_child = cryptd_aead_child(ctx->cryptd_tfm); | |
959 | ||
960 | switch (authsize) { | |
961 | case 8: | |
962 | case 12: | |
963 | case 16: | |
964 | break; | |
965 | default: | |
966 | return -EINVAL; | |
967 | } | |
968 | crypto_aead_crt(parent)->authsize = authsize; | |
969 | crypto_aead_crt(cryptd_child)->authsize = authsize; | |
970 | return 0; | |
971 | } | |
972 | ||
973 | static int rfc4106_encrypt(struct aead_request *req) | |
974 | { | |
975 | int ret; | |
976 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
977 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm); | |
0bd82f5f TS |
978 | |
979 | if (!irq_fpu_usable()) { | |
980 | struct aead_request *cryptd_req = | |
981 | (struct aead_request *) aead_request_ctx(req); | |
982 | memcpy(cryptd_req, req, sizeof(*req)); | |
983 | aead_request_set_tfm(cryptd_req, &ctx->cryptd_tfm->base); | |
984 | return crypto_aead_encrypt(cryptd_req); | |
985 | } else { | |
60af520c | 986 | struct crypto_aead *cryptd_child = cryptd_aead_child(ctx->cryptd_tfm); |
0bd82f5f TS |
987 | kernel_fpu_begin(); |
988 | ret = cryptd_child->base.crt_aead.encrypt(req); | |
989 | kernel_fpu_end(); | |
990 | return ret; | |
991 | } | |
992 | } | |
993 | ||
994 | static int rfc4106_decrypt(struct aead_request *req) | |
995 | { | |
996 | int ret; | |
997 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
998 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm); | |
0bd82f5f TS |
999 | |
1000 | if (!irq_fpu_usable()) { | |
1001 | struct aead_request *cryptd_req = | |
1002 | (struct aead_request *) aead_request_ctx(req); | |
1003 | memcpy(cryptd_req, req, sizeof(*req)); | |
1004 | aead_request_set_tfm(cryptd_req, &ctx->cryptd_tfm->base); | |
1005 | return crypto_aead_decrypt(cryptd_req); | |
1006 | } else { | |
60af520c | 1007 | struct crypto_aead *cryptd_child = cryptd_aead_child(ctx->cryptd_tfm); |
0bd82f5f TS |
1008 | kernel_fpu_begin(); |
1009 | ret = cryptd_child->base.crt_aead.decrypt(req); | |
1010 | kernel_fpu_end(); | |
1011 | return ret; | |
1012 | } | |
1013 | } | |
1014 | ||
0bd82f5f TS |
1015 | static int __driver_rfc4106_encrypt(struct aead_request *req) |
1016 | { | |
1017 | u8 one_entry_in_sg = 0; | |
1018 | u8 *src, *dst, *assoc; | |
1019 | __be32 counter = cpu_to_be32(1); | |
1020 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
1021 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm); | |
e31ac32d | 1022 | u32 key_len = ctx->aes_key_expanded.key_length; |
0bd82f5f TS |
1023 | void *aes_ctx = &(ctx->aes_key_expanded); |
1024 | unsigned long auth_tag_len = crypto_aead_authsize(tfm); | |
1025 | u8 iv_tab[16+AESNI_ALIGN]; | |
1026 | u8* iv = (u8 *) PTR_ALIGN((u8 *)iv_tab, AESNI_ALIGN); | |
1027 | struct scatter_walk src_sg_walk; | |
1028 | struct scatter_walk assoc_sg_walk; | |
1029 | struct scatter_walk dst_sg_walk; | |
1030 | unsigned int i; | |
1031 | ||
1032 | /* Assuming we are supporting rfc4106 64-bit extended */ | |
1033 | /* sequence numbers We need to have the AAD length equal */ | |
1034 | /* to 8 or 12 bytes */ | |
1035 | if (unlikely(req->assoclen != 8 && req->assoclen != 12)) | |
1036 | return -EINVAL; | |
e31ac32d TM |
1037 | if (unlikely(auth_tag_len != 8 && auth_tag_len != 12 && auth_tag_len != 16)) |
1038 | return -EINVAL; | |
1039 | if (unlikely(key_len != AES_KEYSIZE_128 && | |
1040 | key_len != AES_KEYSIZE_192 && | |
1041 | key_len != AES_KEYSIZE_256)) | |
1042 | return -EINVAL; | |
1043 | ||
0bd82f5f TS |
1044 | /* IV below built */ |
1045 | for (i = 0; i < 4; i++) | |
1046 | *(iv+i) = ctx->nonce[i]; | |
1047 | for (i = 0; i < 8; i++) | |
1048 | *(iv+4+i) = req->iv[i]; | |
1049 | *((__be32 *)(iv+12)) = counter; | |
1050 | ||
1051 | if ((sg_is_last(req->src)) && (sg_is_last(req->assoc))) { | |
1052 | one_entry_in_sg = 1; | |
1053 | scatterwalk_start(&src_sg_walk, req->src); | |
1054 | scatterwalk_start(&assoc_sg_walk, req->assoc); | |
8fd75e12 CW |
1055 | src = scatterwalk_map(&src_sg_walk); |
1056 | assoc = scatterwalk_map(&assoc_sg_walk); | |
0bd82f5f TS |
1057 | dst = src; |
1058 | if (unlikely(req->src != req->dst)) { | |
1059 | scatterwalk_start(&dst_sg_walk, req->dst); | |
8fd75e12 | 1060 | dst = scatterwalk_map(&dst_sg_walk); |
0bd82f5f TS |
1061 | } |
1062 | ||
1063 | } else { | |
1064 | /* Allocate memory for src, dst, assoc */ | |
1065 | src = kmalloc(req->cryptlen + auth_tag_len + req->assoclen, | |
1066 | GFP_ATOMIC); | |
1067 | if (unlikely(!src)) | |
1068 | return -ENOMEM; | |
1069 | assoc = (src + req->cryptlen + auth_tag_len); | |
1070 | scatterwalk_map_and_copy(src, req->src, 0, req->cryptlen, 0); | |
1071 | scatterwalk_map_and_copy(assoc, req->assoc, 0, | |
1072 | req->assoclen, 0); | |
1073 | dst = src; | |
1074 | } | |
1075 | ||
d764593a | 1076 | aesni_gcm_enc_tfm(aes_ctx, dst, src, (unsigned long)req->cryptlen, iv, |
0bd82f5f TS |
1077 | ctx->hash_subkey, assoc, (unsigned long)req->assoclen, dst |
1078 | + ((unsigned long)req->cryptlen), auth_tag_len); | |
1079 | ||
1080 | /* The authTag (aka the Integrity Check Value) needs to be written | |
1081 | * back to the packet. */ | |
1082 | if (one_entry_in_sg) { | |
1083 | if (unlikely(req->src != req->dst)) { | |
8fd75e12 | 1084 | scatterwalk_unmap(dst); |
0bd82f5f TS |
1085 | scatterwalk_done(&dst_sg_walk, 0, 0); |
1086 | } | |
8fd75e12 CW |
1087 | scatterwalk_unmap(src); |
1088 | scatterwalk_unmap(assoc); | |
0bd82f5f TS |
1089 | scatterwalk_done(&src_sg_walk, 0, 0); |
1090 | scatterwalk_done(&assoc_sg_walk, 0, 0); | |
1091 | } else { | |
1092 | scatterwalk_map_and_copy(dst, req->dst, 0, | |
1093 | req->cryptlen + auth_tag_len, 1); | |
1094 | kfree(src); | |
1095 | } | |
1096 | return 0; | |
1097 | } | |
1098 | ||
1099 | static int __driver_rfc4106_decrypt(struct aead_request *req) | |
1100 | { | |
1101 | u8 one_entry_in_sg = 0; | |
1102 | u8 *src, *dst, *assoc; | |
1103 | unsigned long tempCipherLen = 0; | |
1104 | __be32 counter = cpu_to_be32(1); | |
1105 | int retval = 0; | |
1106 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
1107 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm); | |
e31ac32d | 1108 | u32 key_len = ctx->aes_key_expanded.key_length; |
0bd82f5f TS |
1109 | void *aes_ctx = &(ctx->aes_key_expanded); |
1110 | unsigned long auth_tag_len = crypto_aead_authsize(tfm); | |
1111 | u8 iv_and_authTag[32+AESNI_ALIGN]; | |
1112 | u8 *iv = (u8 *) PTR_ALIGN((u8 *)iv_and_authTag, AESNI_ALIGN); | |
1113 | u8 *authTag = iv + 16; | |
1114 | struct scatter_walk src_sg_walk; | |
1115 | struct scatter_walk assoc_sg_walk; | |
1116 | struct scatter_walk dst_sg_walk; | |
1117 | unsigned int i; | |
1118 | ||
1119 | if (unlikely((req->cryptlen < auth_tag_len) || | |
1120 | (req->assoclen != 8 && req->assoclen != 12))) | |
1121 | return -EINVAL; | |
e31ac32d TM |
1122 | if (unlikely(auth_tag_len != 8 && auth_tag_len != 12 && auth_tag_len != 16)) |
1123 | return -EINVAL; | |
1124 | if (unlikely(key_len != AES_KEYSIZE_128 && | |
1125 | key_len != AES_KEYSIZE_192 && | |
1126 | key_len != AES_KEYSIZE_256)) | |
1127 | return -EINVAL; | |
1128 | ||
0bd82f5f TS |
1129 | /* Assuming we are supporting rfc4106 64-bit extended */ |
1130 | /* sequence numbers We need to have the AAD length */ | |
1131 | /* equal to 8 or 12 bytes */ | |
1132 | ||
1133 | tempCipherLen = (unsigned long)(req->cryptlen - auth_tag_len); | |
1134 | /* IV below built */ | |
1135 | for (i = 0; i < 4; i++) | |
1136 | *(iv+i) = ctx->nonce[i]; | |
1137 | for (i = 0; i < 8; i++) | |
1138 | *(iv+4+i) = req->iv[i]; | |
1139 | *((__be32 *)(iv+12)) = counter; | |
1140 | ||
1141 | if ((sg_is_last(req->src)) && (sg_is_last(req->assoc))) { | |
1142 | one_entry_in_sg = 1; | |
1143 | scatterwalk_start(&src_sg_walk, req->src); | |
1144 | scatterwalk_start(&assoc_sg_walk, req->assoc); | |
8fd75e12 CW |
1145 | src = scatterwalk_map(&src_sg_walk); |
1146 | assoc = scatterwalk_map(&assoc_sg_walk); | |
0bd82f5f TS |
1147 | dst = src; |
1148 | if (unlikely(req->src != req->dst)) { | |
1149 | scatterwalk_start(&dst_sg_walk, req->dst); | |
8fd75e12 | 1150 | dst = scatterwalk_map(&dst_sg_walk); |
0bd82f5f TS |
1151 | } |
1152 | ||
1153 | } else { | |
1154 | /* Allocate memory for src, dst, assoc */ | |
1155 | src = kmalloc(req->cryptlen + req->assoclen, GFP_ATOMIC); | |
1156 | if (!src) | |
1157 | return -ENOMEM; | |
1158 | assoc = (src + req->cryptlen + auth_tag_len); | |
1159 | scatterwalk_map_and_copy(src, req->src, 0, req->cryptlen, 0); | |
1160 | scatterwalk_map_and_copy(assoc, req->assoc, 0, | |
1161 | req->assoclen, 0); | |
1162 | dst = src; | |
1163 | } | |
1164 | ||
d764593a | 1165 | aesni_gcm_dec_tfm(aes_ctx, dst, src, tempCipherLen, iv, |
0bd82f5f TS |
1166 | ctx->hash_subkey, assoc, (unsigned long)req->assoclen, |
1167 | authTag, auth_tag_len); | |
1168 | ||
1169 | /* Compare generated tag with passed in tag. */ | |
fed28611 | 1170 | retval = crypto_memneq(src + tempCipherLen, authTag, auth_tag_len) ? |
0bd82f5f TS |
1171 | -EBADMSG : 0; |
1172 | ||
1173 | if (one_entry_in_sg) { | |
1174 | if (unlikely(req->src != req->dst)) { | |
8fd75e12 | 1175 | scatterwalk_unmap(dst); |
0bd82f5f TS |
1176 | scatterwalk_done(&dst_sg_walk, 0, 0); |
1177 | } | |
8fd75e12 CW |
1178 | scatterwalk_unmap(src); |
1179 | scatterwalk_unmap(assoc); | |
0bd82f5f TS |
1180 | scatterwalk_done(&src_sg_walk, 0, 0); |
1181 | scatterwalk_done(&assoc_sg_walk, 0, 0); | |
1182 | } else { | |
1183 | scatterwalk_map_and_copy(dst, req->dst, 0, req->cryptlen, 1); | |
1184 | kfree(src); | |
1185 | } | |
1186 | return retval; | |
1187 | } | |
fa46ccb8 | 1188 | #endif |
0bd82f5f | 1189 | |
fa46ccb8 JK |
1190 | static struct crypto_alg aesni_algs[] = { { |
1191 | .cra_name = "aes", | |
1192 | .cra_driver_name = "aes-aesni", | |
1193 | .cra_priority = 300, | |
1194 | .cra_flags = CRYPTO_ALG_TYPE_CIPHER, | |
1195 | .cra_blocksize = AES_BLOCK_SIZE, | |
1196 | .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
1197 | AESNI_ALIGN - 1, | |
1198 | .cra_alignmask = 0, | |
1199 | .cra_module = THIS_MODULE, | |
1200 | .cra_u = { | |
1201 | .cipher = { | |
1202 | .cia_min_keysize = AES_MIN_KEY_SIZE, | |
1203 | .cia_max_keysize = AES_MAX_KEY_SIZE, | |
1204 | .cia_setkey = aes_set_key, | |
1205 | .cia_encrypt = aes_encrypt, | |
1206 | .cia_decrypt = aes_decrypt | |
1207 | } | |
1208 | } | |
1209 | }, { | |
1210 | .cra_name = "__aes-aesni", | |
1211 | .cra_driver_name = "__driver-aes-aesni", | |
1212 | .cra_priority = 0, | |
1213 | .cra_flags = CRYPTO_ALG_TYPE_CIPHER, | |
1214 | .cra_blocksize = AES_BLOCK_SIZE, | |
1215 | .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
1216 | AESNI_ALIGN - 1, | |
1217 | .cra_alignmask = 0, | |
1218 | .cra_module = THIS_MODULE, | |
1219 | .cra_u = { | |
1220 | .cipher = { | |
1221 | .cia_min_keysize = AES_MIN_KEY_SIZE, | |
1222 | .cia_max_keysize = AES_MAX_KEY_SIZE, | |
1223 | .cia_setkey = aes_set_key, | |
1224 | .cia_encrypt = __aes_encrypt, | |
1225 | .cia_decrypt = __aes_decrypt | |
1226 | } | |
1227 | } | |
1228 | }, { | |
1229 | .cra_name = "__ecb-aes-aesni", | |
1230 | .cra_driver_name = "__driver-ecb-aes-aesni", | |
1231 | .cra_priority = 0, | |
1232 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
1233 | .cra_blocksize = AES_BLOCK_SIZE, | |
1234 | .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
1235 | AESNI_ALIGN - 1, | |
1236 | .cra_alignmask = 0, | |
1237 | .cra_type = &crypto_blkcipher_type, | |
1238 | .cra_module = THIS_MODULE, | |
1239 | .cra_u = { | |
1240 | .blkcipher = { | |
1241 | .min_keysize = AES_MIN_KEY_SIZE, | |
1242 | .max_keysize = AES_MAX_KEY_SIZE, | |
1243 | .setkey = aes_set_key, | |
1244 | .encrypt = ecb_encrypt, | |
1245 | .decrypt = ecb_decrypt, | |
1246 | }, | |
1247 | }, | |
1248 | }, { | |
1249 | .cra_name = "__cbc-aes-aesni", | |
1250 | .cra_driver_name = "__driver-cbc-aes-aesni", | |
1251 | .cra_priority = 0, | |
1252 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
1253 | .cra_blocksize = AES_BLOCK_SIZE, | |
1254 | .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
1255 | AESNI_ALIGN - 1, | |
1256 | .cra_alignmask = 0, | |
1257 | .cra_type = &crypto_blkcipher_type, | |
1258 | .cra_module = THIS_MODULE, | |
1259 | .cra_u = { | |
1260 | .blkcipher = { | |
1261 | .min_keysize = AES_MIN_KEY_SIZE, | |
1262 | .max_keysize = AES_MAX_KEY_SIZE, | |
1263 | .setkey = aes_set_key, | |
1264 | .encrypt = cbc_encrypt, | |
1265 | .decrypt = cbc_decrypt, | |
1266 | }, | |
1267 | }, | |
1268 | }, { | |
1269 | .cra_name = "ecb(aes)", | |
1270 | .cra_driver_name = "ecb-aes-aesni", | |
1271 | .cra_priority = 400, | |
1272 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1273 | .cra_blocksize = AES_BLOCK_SIZE, | |
a9629d71 | 1274 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1275 | .cra_alignmask = 0, |
1276 | .cra_type = &crypto_ablkcipher_type, | |
1277 | .cra_module = THIS_MODULE, | |
1278 | .cra_init = ablk_ecb_init, | |
1279 | .cra_exit = ablk_exit, | |
1280 | .cra_u = { | |
1281 | .ablkcipher = { | |
1282 | .min_keysize = AES_MIN_KEY_SIZE, | |
1283 | .max_keysize = AES_MAX_KEY_SIZE, | |
1284 | .setkey = ablk_set_key, | |
1285 | .encrypt = ablk_encrypt, | |
1286 | .decrypt = ablk_decrypt, | |
1287 | }, | |
1288 | }, | |
1289 | }, { | |
1290 | .cra_name = "cbc(aes)", | |
1291 | .cra_driver_name = "cbc-aes-aesni", | |
1292 | .cra_priority = 400, | |
1293 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1294 | .cra_blocksize = AES_BLOCK_SIZE, | |
a9629d71 | 1295 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1296 | .cra_alignmask = 0, |
1297 | .cra_type = &crypto_ablkcipher_type, | |
1298 | .cra_module = THIS_MODULE, | |
1299 | .cra_init = ablk_cbc_init, | |
1300 | .cra_exit = ablk_exit, | |
1301 | .cra_u = { | |
1302 | .ablkcipher = { | |
1303 | .min_keysize = AES_MIN_KEY_SIZE, | |
1304 | .max_keysize = AES_MAX_KEY_SIZE, | |
1305 | .ivsize = AES_BLOCK_SIZE, | |
1306 | .setkey = ablk_set_key, | |
1307 | .encrypt = ablk_encrypt, | |
1308 | .decrypt = ablk_decrypt, | |
1309 | }, | |
1310 | }, | |
1311 | #ifdef CONFIG_X86_64 | |
1312 | }, { | |
1313 | .cra_name = "__ctr-aes-aesni", | |
1314 | .cra_driver_name = "__driver-ctr-aes-aesni", | |
1315 | .cra_priority = 0, | |
1316 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
1317 | .cra_blocksize = 1, | |
1318 | .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
1319 | AESNI_ALIGN - 1, | |
1320 | .cra_alignmask = 0, | |
1321 | .cra_type = &crypto_blkcipher_type, | |
1322 | .cra_module = THIS_MODULE, | |
1323 | .cra_u = { | |
1324 | .blkcipher = { | |
1325 | .min_keysize = AES_MIN_KEY_SIZE, | |
1326 | .max_keysize = AES_MAX_KEY_SIZE, | |
1327 | .ivsize = AES_BLOCK_SIZE, | |
1328 | .setkey = aes_set_key, | |
1329 | .encrypt = ctr_crypt, | |
1330 | .decrypt = ctr_crypt, | |
1331 | }, | |
1332 | }, | |
1333 | }, { | |
1334 | .cra_name = "ctr(aes)", | |
1335 | .cra_driver_name = "ctr-aes-aesni", | |
1336 | .cra_priority = 400, | |
1337 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1338 | .cra_blocksize = 1, | |
a9629d71 | 1339 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1340 | .cra_alignmask = 0, |
1341 | .cra_type = &crypto_ablkcipher_type, | |
1342 | .cra_module = THIS_MODULE, | |
1343 | .cra_init = ablk_ctr_init, | |
1344 | .cra_exit = ablk_exit, | |
1345 | .cra_u = { | |
1346 | .ablkcipher = { | |
1347 | .min_keysize = AES_MIN_KEY_SIZE, | |
1348 | .max_keysize = AES_MAX_KEY_SIZE, | |
1349 | .ivsize = AES_BLOCK_SIZE, | |
1350 | .setkey = ablk_set_key, | |
1351 | .encrypt = ablk_encrypt, | |
1352 | .decrypt = ablk_encrypt, | |
1353 | .geniv = "chainiv", | |
1354 | }, | |
1355 | }, | |
1356 | }, { | |
1357 | .cra_name = "__gcm-aes-aesni", | |
1358 | .cra_driver_name = "__driver-gcm-aes-aesni", | |
0bd82f5f TS |
1359 | .cra_priority = 0, |
1360 | .cra_flags = CRYPTO_ALG_TYPE_AEAD, | |
1361 | .cra_blocksize = 1, | |
fa46ccb8 JK |
1362 | .cra_ctxsize = sizeof(struct aesni_rfc4106_gcm_ctx) + |
1363 | AESNI_ALIGN, | |
0bd82f5f TS |
1364 | .cra_alignmask = 0, |
1365 | .cra_type = &crypto_aead_type, | |
1366 | .cra_module = THIS_MODULE, | |
0bd82f5f TS |
1367 | .cra_u = { |
1368 | .aead = { | |
1369 | .encrypt = __driver_rfc4106_encrypt, | |
1370 | .decrypt = __driver_rfc4106_decrypt, | |
1371 | }, | |
1372 | }, | |
fa46ccb8 JK |
1373 | }, { |
1374 | .cra_name = "rfc4106(gcm(aes))", | |
1375 | .cra_driver_name = "rfc4106-gcm-aesni", | |
1376 | .cra_priority = 400, | |
1377 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
1378 | .cra_blocksize = 1, | |
1379 | .cra_ctxsize = sizeof(struct aesni_rfc4106_gcm_ctx) + | |
1380 | AESNI_ALIGN, | |
1381 | .cra_alignmask = 0, | |
1382 | .cra_type = &crypto_nivaead_type, | |
1383 | .cra_module = THIS_MODULE, | |
1384 | .cra_init = rfc4106_init, | |
1385 | .cra_exit = rfc4106_exit, | |
1386 | .cra_u = { | |
1387 | .aead = { | |
1388 | .setkey = rfc4106_set_key, | |
1389 | .setauthsize = rfc4106_set_authsize, | |
1390 | .encrypt = rfc4106_encrypt, | |
1391 | .decrypt = rfc4106_decrypt, | |
1392 | .geniv = "seqiv", | |
1393 | .ivsize = 8, | |
1394 | .maxauthsize = 16, | |
1395 | }, | |
1396 | }, | |
fa46ccb8 | 1397 | #endif |
304576a7 | 1398 | #if IS_ENABLED(CONFIG_CRYPTO_PCBC) |
fa46ccb8 | 1399 | }, { |
023af608 JK |
1400 | .cra_name = "pcbc(aes)", |
1401 | .cra_driver_name = "pcbc-aes-aesni", | |
fa46ccb8 JK |
1402 | .cra_priority = 400, |
1403 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1404 | .cra_blocksize = AES_BLOCK_SIZE, | |
a9629d71 | 1405 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1406 | .cra_alignmask = 0, |
1407 | .cra_type = &crypto_ablkcipher_type, | |
1408 | .cra_module = THIS_MODULE, | |
023af608 | 1409 | .cra_init = ablk_pcbc_init, |
fa46ccb8 JK |
1410 | .cra_exit = ablk_exit, |
1411 | .cra_u = { | |
1412 | .ablkcipher = { | |
023af608 JK |
1413 | .min_keysize = AES_MIN_KEY_SIZE, |
1414 | .max_keysize = AES_MAX_KEY_SIZE, | |
fa46ccb8 JK |
1415 | .ivsize = AES_BLOCK_SIZE, |
1416 | .setkey = ablk_set_key, | |
1417 | .encrypt = ablk_encrypt, | |
1418 | .decrypt = ablk_decrypt, | |
1419 | }, | |
1420 | }, | |
1421 | #endif | |
fa46ccb8 | 1422 | }, { |
023af608 JK |
1423 | .cra_name = "__lrw-aes-aesni", |
1424 | .cra_driver_name = "__driver-lrw-aes-aesni", | |
1425 | .cra_priority = 0, | |
1426 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
1427 | .cra_blocksize = AES_BLOCK_SIZE, | |
1428 | .cra_ctxsize = sizeof(struct aesni_lrw_ctx), | |
1429 | .cra_alignmask = 0, | |
1430 | .cra_type = &crypto_blkcipher_type, | |
1431 | .cra_module = THIS_MODULE, | |
1432 | .cra_exit = lrw_aesni_exit_tfm, | |
1433 | .cra_u = { | |
1434 | .blkcipher = { | |
1435 | .min_keysize = AES_MIN_KEY_SIZE + AES_BLOCK_SIZE, | |
1436 | .max_keysize = AES_MAX_KEY_SIZE + AES_BLOCK_SIZE, | |
1437 | .ivsize = AES_BLOCK_SIZE, | |
1438 | .setkey = lrw_aesni_setkey, | |
1439 | .encrypt = lrw_encrypt, | |
1440 | .decrypt = lrw_decrypt, | |
1441 | }, | |
1442 | }, | |
1443 | }, { | |
1444 | .cra_name = "__xts-aes-aesni", | |
1445 | .cra_driver_name = "__driver-xts-aes-aesni", | |
1446 | .cra_priority = 0, | |
1447 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
1448 | .cra_blocksize = AES_BLOCK_SIZE, | |
1449 | .cra_ctxsize = sizeof(struct aesni_xts_ctx), | |
1450 | .cra_alignmask = 0, | |
1451 | .cra_type = &crypto_blkcipher_type, | |
1452 | .cra_module = THIS_MODULE, | |
1453 | .cra_u = { | |
1454 | .blkcipher = { | |
1455 | .min_keysize = 2 * AES_MIN_KEY_SIZE, | |
1456 | .max_keysize = 2 * AES_MAX_KEY_SIZE, | |
1457 | .ivsize = AES_BLOCK_SIZE, | |
1458 | .setkey = xts_aesni_setkey, | |
1459 | .encrypt = xts_encrypt, | |
1460 | .decrypt = xts_decrypt, | |
1461 | }, | |
1462 | }, | |
1463 | }, { | |
1464 | .cra_name = "lrw(aes)", | |
1465 | .cra_driver_name = "lrw-aes-aesni", | |
fa46ccb8 JK |
1466 | .cra_priority = 400, |
1467 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1468 | .cra_blocksize = AES_BLOCK_SIZE, | |
a9629d71 | 1469 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1470 | .cra_alignmask = 0, |
1471 | .cra_type = &crypto_ablkcipher_type, | |
1472 | .cra_module = THIS_MODULE, | |
023af608 | 1473 | .cra_init = ablk_init, |
fa46ccb8 JK |
1474 | .cra_exit = ablk_exit, |
1475 | .cra_u = { | |
1476 | .ablkcipher = { | |
023af608 JK |
1477 | .min_keysize = AES_MIN_KEY_SIZE + AES_BLOCK_SIZE, |
1478 | .max_keysize = AES_MAX_KEY_SIZE + AES_BLOCK_SIZE, | |
fa46ccb8 JK |
1479 | .ivsize = AES_BLOCK_SIZE, |
1480 | .setkey = ablk_set_key, | |
1481 | .encrypt = ablk_encrypt, | |
1482 | .decrypt = ablk_decrypt, | |
1483 | }, | |
1484 | }, | |
fa46ccb8 JK |
1485 | }, { |
1486 | .cra_name = "xts(aes)", | |
1487 | .cra_driver_name = "xts-aes-aesni", | |
1488 | .cra_priority = 400, | |
1489 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1490 | .cra_blocksize = AES_BLOCK_SIZE, | |
a9629d71 | 1491 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1492 | .cra_alignmask = 0, |
1493 | .cra_type = &crypto_ablkcipher_type, | |
1494 | .cra_module = THIS_MODULE, | |
023af608 | 1495 | .cra_init = ablk_init, |
fa46ccb8 JK |
1496 | .cra_exit = ablk_exit, |
1497 | .cra_u = { | |
1498 | .ablkcipher = { | |
1499 | .min_keysize = 2 * AES_MIN_KEY_SIZE, | |
1500 | .max_keysize = 2 * AES_MAX_KEY_SIZE, | |
1501 | .ivsize = AES_BLOCK_SIZE, | |
1502 | .setkey = ablk_set_key, | |
1503 | .encrypt = ablk_encrypt, | |
1504 | .decrypt = ablk_decrypt, | |
1505 | }, | |
1506 | }, | |
fa46ccb8 | 1507 | } }; |
0bd82f5f | 1508 | |
3bd391f0 AK |
1509 | |
1510 | static const struct x86_cpu_id aesni_cpu_id[] = { | |
1511 | X86_FEATURE_MATCH(X86_FEATURE_AES), | |
1512 | {} | |
1513 | }; | |
1514 | MODULE_DEVICE_TABLE(x86cpu, aesni_cpu_id); | |
1515 | ||
54b6a1bd HY |
1516 | static int __init aesni_init(void) |
1517 | { | |
7af6c245 | 1518 | int err; |
54b6a1bd | 1519 | |
3bd391f0 | 1520 | if (!x86_match_cpu(aesni_cpu_id)) |
54b6a1bd | 1521 | return -ENODEV; |
8610d7bf | 1522 | #ifdef CONFIG_X86_64 |
d764593a TC |
1523 | #ifdef CONFIG_AS_AVX2 |
1524 | if (boot_cpu_has(X86_FEATURE_AVX2)) { | |
1525 | pr_info("AVX2 version of gcm_enc/dec engaged.\n"); | |
1526 | aesni_gcm_enc_tfm = aesni_gcm_enc_avx2; | |
1527 | aesni_gcm_dec_tfm = aesni_gcm_dec_avx2; | |
1528 | } else | |
1529 | #endif | |
1530 | #ifdef CONFIG_AS_AVX | |
1531 | if (boot_cpu_has(X86_FEATURE_AVX)) { | |
1532 | pr_info("AVX version of gcm_enc/dec engaged.\n"); | |
1533 | aesni_gcm_enc_tfm = aesni_gcm_enc_avx; | |
1534 | aesni_gcm_dec_tfm = aesni_gcm_dec_avx; | |
1535 | } else | |
1536 | #endif | |
1537 | { | |
1538 | pr_info("SSE version of gcm_enc/dec engaged.\n"); | |
1539 | aesni_gcm_enc_tfm = aesni_gcm_enc; | |
1540 | aesni_gcm_dec_tfm = aesni_gcm_dec; | |
1541 | } | |
22cddcc7 | 1542 | aesni_ctr_enc_tfm = aesni_ctr_enc; |
5cfed7b3 | 1543 | #ifdef CONFIG_AS_AVX |
22cddcc7 | 1544 | if (cpu_has_avx) { |
1545 | /* optimize performance of ctr mode encryption transform */ | |
1546 | aesni_ctr_enc_tfm = aesni_ctr_enc_avx_tfm; | |
1547 | pr_info("AES CTR mode by8 optimization enabled\n"); | |
1548 | } | |
1549 | #endif | |
8610d7bf | 1550 | #endif |
0bd82f5f | 1551 | |
fa46ccb8 JK |
1552 | err = crypto_fpu_init(); |
1553 | if (err) | |
1554 | return err; | |
54b6a1bd | 1555 | |
fa46ccb8 | 1556 | return crypto_register_algs(aesni_algs, ARRAY_SIZE(aesni_algs)); |
54b6a1bd HY |
1557 | } |
1558 | ||
1559 | static void __exit aesni_exit(void) | |
1560 | { | |
fa46ccb8 | 1561 | crypto_unregister_algs(aesni_algs, ARRAY_SIZE(aesni_algs)); |
b23b6451 AL |
1562 | |
1563 | crypto_fpu_exit(); | |
54b6a1bd HY |
1564 | } |
1565 | ||
1566 | module_init(aesni_init); | |
1567 | module_exit(aesni_exit); | |
1568 | ||
1569 | MODULE_DESCRIPTION("Rijndael (AES) Cipher Algorithm, Intel AES-NI instructions optimized"); | |
1570 | MODULE_LICENSE("GPL"); | |
5d26a105 | 1571 | MODULE_ALIAS_CRYPTO("aes"); |