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> |
df6b35f4 | 35 | #include <asm/fpu/api.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 | |
b7c89d9e HX |
47 | #define AESNI_ALIGN 16 |
48 | #define AES_BLOCK_MASK (~(AES_BLOCK_SIZE - 1)) | |
49 | #define RFC4106_HASH_SUBKEY_SIZE 16 | |
50 | ||
0bd82f5f TS |
51 | /* This data is stored at the end of the crypto_tfm struct. |
52 | * It's a type of per "session" data storage location. | |
53 | * This needs to be 16 byte aligned. | |
54 | */ | |
55 | struct aesni_rfc4106_gcm_ctx { | |
b7c89d9e HX |
56 | u8 hash_subkey[16] __attribute__ ((__aligned__(AESNI_ALIGN))); |
57 | struct crypto_aes_ctx aes_key_expanded | |
58 | __attribute__ ((__aligned__(AESNI_ALIGN))); | |
0bd82f5f | 59 | u8 nonce[4]; |
0bd82f5f TS |
60 | }; |
61 | ||
62 | struct aesni_gcm_set_hash_subkey_result { | |
63 | int err; | |
64 | struct completion completion; | |
65 | }; | |
66 | ||
67 | struct aesni_hash_subkey_req_data { | |
68 | u8 iv[16]; | |
69 | struct aesni_gcm_set_hash_subkey_result result; | |
70 | struct scatterlist sg; | |
71 | }; | |
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 | { | |
b7c89d9e HX |
286 | unsigned long align = AESNI_ALIGN; |
287 | ||
288 | if (align <= crypto_tfm_ctx_alignment()) | |
289 | align = 1; | |
290 | return PTR_ALIGN(crypto_aead_ctx(tfm), align); | |
0bd82f5f | 291 | } |
559ad0ff | 292 | #endif |
0bd82f5f | 293 | |
54b6a1bd HY |
294 | static inline struct crypto_aes_ctx *aes_ctx(void *raw_ctx) |
295 | { | |
296 | unsigned long addr = (unsigned long)raw_ctx; | |
297 | unsigned long align = AESNI_ALIGN; | |
298 | ||
299 | if (align <= crypto_tfm_ctx_alignment()) | |
300 | align = 1; | |
301 | return (struct crypto_aes_ctx *)ALIGN(addr, align); | |
302 | } | |
303 | ||
304 | static int aes_set_key_common(struct crypto_tfm *tfm, void *raw_ctx, | |
305 | const u8 *in_key, unsigned int key_len) | |
306 | { | |
307 | struct crypto_aes_ctx *ctx = aes_ctx(raw_ctx); | |
308 | u32 *flags = &tfm->crt_flags; | |
309 | int err; | |
310 | ||
311 | if (key_len != AES_KEYSIZE_128 && key_len != AES_KEYSIZE_192 && | |
312 | key_len != AES_KEYSIZE_256) { | |
313 | *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; | |
314 | return -EINVAL; | |
315 | } | |
316 | ||
13b79b97 | 317 | if (!irq_fpu_usable()) |
54b6a1bd HY |
318 | err = crypto_aes_expand_key(ctx, in_key, key_len); |
319 | else { | |
320 | kernel_fpu_begin(); | |
321 | err = aesni_set_key(ctx, in_key, key_len); | |
322 | kernel_fpu_end(); | |
323 | } | |
324 | ||
325 | return err; | |
326 | } | |
327 | ||
328 | static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key, | |
329 | unsigned int key_len) | |
330 | { | |
331 | return aes_set_key_common(tfm, crypto_tfm_ctx(tfm), in_key, key_len); | |
332 | } | |
333 | ||
334 | static void aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
335 | { | |
336 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); | |
337 | ||
13b79b97 | 338 | if (!irq_fpu_usable()) |
54b6a1bd HY |
339 | crypto_aes_encrypt_x86(ctx, dst, src); |
340 | else { | |
341 | kernel_fpu_begin(); | |
342 | aesni_enc(ctx, dst, src); | |
343 | kernel_fpu_end(); | |
344 | } | |
345 | } | |
346 | ||
347 | static void aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
348 | { | |
349 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); | |
350 | ||
13b79b97 | 351 | if (!irq_fpu_usable()) |
54b6a1bd HY |
352 | crypto_aes_decrypt_x86(ctx, dst, src); |
353 | else { | |
354 | kernel_fpu_begin(); | |
355 | aesni_dec(ctx, dst, src); | |
356 | kernel_fpu_end(); | |
357 | } | |
358 | } | |
359 | ||
2cf4ac8b HY |
360 | static void __aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) |
361 | { | |
362 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); | |
363 | ||
364 | aesni_enc(ctx, dst, src); | |
365 | } | |
366 | ||
367 | static void __aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
368 | { | |
369 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); | |
370 | ||
371 | aesni_dec(ctx, dst, src); | |
372 | } | |
373 | ||
54b6a1bd HY |
374 | static int ecb_encrypt(struct blkcipher_desc *desc, |
375 | struct scatterlist *dst, struct scatterlist *src, | |
376 | unsigned int nbytes) | |
377 | { | |
378 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
379 | struct blkcipher_walk walk; | |
380 | int err; | |
381 | ||
382 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
383 | err = blkcipher_walk_virt(desc, &walk); | |
9251b64f | 384 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
54b6a1bd HY |
385 | |
386 | kernel_fpu_begin(); | |
387 | while ((nbytes = walk.nbytes)) { | |
388 | aesni_ecb_enc(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
389 | nbytes & AES_BLOCK_MASK); | |
390 | nbytes &= AES_BLOCK_SIZE - 1; | |
391 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
392 | } | |
393 | kernel_fpu_end(); | |
394 | ||
395 | return err; | |
396 | } | |
397 | ||
398 | static int ecb_decrypt(struct blkcipher_desc *desc, | |
399 | struct scatterlist *dst, struct scatterlist *src, | |
400 | unsigned int nbytes) | |
401 | { | |
402 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
403 | struct blkcipher_walk walk; | |
404 | int err; | |
405 | ||
406 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
407 | err = blkcipher_walk_virt(desc, &walk); | |
9251b64f | 408 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
54b6a1bd HY |
409 | |
410 | kernel_fpu_begin(); | |
411 | while ((nbytes = walk.nbytes)) { | |
412 | aesni_ecb_dec(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
413 | nbytes & AES_BLOCK_MASK); | |
414 | nbytes &= AES_BLOCK_SIZE - 1; | |
415 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
416 | } | |
417 | kernel_fpu_end(); | |
418 | ||
419 | return err; | |
420 | } | |
421 | ||
54b6a1bd HY |
422 | static int cbc_encrypt(struct blkcipher_desc *desc, |
423 | struct scatterlist *dst, struct scatterlist *src, | |
424 | unsigned int nbytes) | |
425 | { | |
426 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
427 | struct blkcipher_walk walk; | |
428 | int err; | |
429 | ||
430 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
431 | err = blkcipher_walk_virt(desc, &walk); | |
9251b64f | 432 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
54b6a1bd HY |
433 | |
434 | kernel_fpu_begin(); | |
435 | while ((nbytes = walk.nbytes)) { | |
436 | aesni_cbc_enc(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
437 | nbytes & AES_BLOCK_MASK, walk.iv); | |
438 | nbytes &= AES_BLOCK_SIZE - 1; | |
439 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
440 | } | |
441 | kernel_fpu_end(); | |
442 | ||
443 | return err; | |
444 | } | |
445 | ||
446 | static int cbc_decrypt(struct blkcipher_desc *desc, | |
447 | struct scatterlist *dst, struct scatterlist *src, | |
448 | unsigned int nbytes) | |
449 | { | |
450 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
451 | struct blkcipher_walk walk; | |
452 | int err; | |
453 | ||
454 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
455 | err = blkcipher_walk_virt(desc, &walk); | |
9251b64f | 456 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
54b6a1bd HY |
457 | |
458 | kernel_fpu_begin(); | |
459 | while ((nbytes = walk.nbytes)) { | |
460 | aesni_cbc_dec(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
461 | nbytes & AES_BLOCK_MASK, walk.iv); | |
462 | nbytes &= AES_BLOCK_SIZE - 1; | |
463 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
464 | } | |
465 | kernel_fpu_end(); | |
466 | ||
467 | return err; | |
468 | } | |
469 | ||
0d258efb | 470 | #ifdef CONFIG_X86_64 |
12387a46 HY |
471 | static void ctr_crypt_final(struct crypto_aes_ctx *ctx, |
472 | struct blkcipher_walk *walk) | |
473 | { | |
474 | u8 *ctrblk = walk->iv; | |
475 | u8 keystream[AES_BLOCK_SIZE]; | |
476 | u8 *src = walk->src.virt.addr; | |
477 | u8 *dst = walk->dst.virt.addr; | |
478 | unsigned int nbytes = walk->nbytes; | |
479 | ||
480 | aesni_enc(ctx, keystream, ctrblk); | |
481 | crypto_xor(keystream, src, nbytes); | |
482 | memcpy(dst, keystream, nbytes); | |
483 | crypto_inc(ctrblk, AES_BLOCK_SIZE); | |
484 | } | |
485 | ||
5cfed7b3 | 486 | #ifdef CONFIG_AS_AVX |
22cddcc7 | 487 | static void aesni_ctr_enc_avx_tfm(struct crypto_aes_ctx *ctx, u8 *out, |
488 | const u8 *in, unsigned int len, u8 *iv) | |
489 | { | |
490 | /* | |
491 | * based on key length, override with the by8 version | |
492 | * of ctr mode encryption/decryption for improved performance | |
493 | * aes_set_key_common() ensures that key length is one of | |
494 | * {128,192,256} | |
495 | */ | |
496 | if (ctx->key_length == AES_KEYSIZE_128) | |
497 | aes_ctr_enc_128_avx_by8(in, iv, (void *)ctx, out, len); | |
498 | else if (ctx->key_length == AES_KEYSIZE_192) | |
499 | aes_ctr_enc_192_avx_by8(in, iv, (void *)ctx, out, len); | |
500 | else | |
501 | aes_ctr_enc_256_avx_by8(in, iv, (void *)ctx, out, len); | |
502 | } | |
503 | #endif | |
504 | ||
12387a46 HY |
505 | static int ctr_crypt(struct blkcipher_desc *desc, |
506 | struct scatterlist *dst, struct scatterlist *src, | |
507 | unsigned int nbytes) | |
508 | { | |
509 | struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
510 | struct blkcipher_walk walk; | |
511 | int err; | |
512 | ||
513 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
514 | err = blkcipher_walk_virt_block(desc, &walk, AES_BLOCK_SIZE); | |
515 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
516 | ||
517 | kernel_fpu_begin(); | |
518 | while ((nbytes = walk.nbytes) >= AES_BLOCK_SIZE) { | |
22cddcc7 | 519 | aesni_ctr_enc_tfm(ctx, walk.dst.virt.addr, walk.src.virt.addr, |
e31ac32d | 520 | nbytes & AES_BLOCK_MASK, walk.iv); |
12387a46 HY |
521 | nbytes &= AES_BLOCK_SIZE - 1; |
522 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
523 | } | |
524 | if (walk.nbytes) { | |
525 | ctr_crypt_final(ctx, &walk); | |
526 | err = blkcipher_walk_done(desc, &walk, 0); | |
527 | } | |
528 | kernel_fpu_end(); | |
529 | ||
530 | return err; | |
531 | } | |
0d258efb | 532 | #endif |
12387a46 | 533 | |
54b6a1bd HY |
534 | static int ablk_ecb_init(struct crypto_tfm *tfm) |
535 | { | |
ef45b834 | 536 | return ablk_init_common(tfm, "__driver-ecb-aes-aesni"); |
54b6a1bd HY |
537 | } |
538 | ||
54b6a1bd HY |
539 | static int ablk_cbc_init(struct crypto_tfm *tfm) |
540 | { | |
ef45b834 | 541 | return ablk_init_common(tfm, "__driver-cbc-aes-aesni"); |
54b6a1bd HY |
542 | } |
543 | ||
0d258efb | 544 | #ifdef CONFIG_X86_64 |
2cf4ac8b HY |
545 | static int ablk_ctr_init(struct crypto_tfm *tfm) |
546 | { | |
ef45b834 | 547 | return ablk_init_common(tfm, "__driver-ctr-aes-aesni"); |
2cf4ac8b HY |
548 | } |
549 | ||
0d258efb | 550 | #endif |
2cf4ac8b | 551 | |
304576a7 | 552 | #if IS_ENABLED(CONFIG_CRYPTO_PCBC) |
2cf4ac8b HY |
553 | static int ablk_pcbc_init(struct crypto_tfm *tfm) |
554 | { | |
ef45b834 | 555 | return ablk_init_common(tfm, "fpu(pcbc(__driver-aes-aesni))"); |
2cf4ac8b | 556 | } |
2cf4ac8b HY |
557 | #endif |
558 | ||
023af608 | 559 | static void lrw_xts_encrypt_callback(void *ctx, u8 *blks, unsigned int nbytes) |
2cf4ac8b | 560 | { |
023af608 JK |
561 | aesni_ecb_enc(ctx, blks, blks, nbytes); |
562 | } | |
563 | ||
564 | static void lrw_xts_decrypt_callback(void *ctx, u8 *blks, unsigned int nbytes) | |
565 | { | |
566 | aesni_ecb_dec(ctx, blks, blks, nbytes); | |
567 | } | |
568 | ||
569 | static int lrw_aesni_setkey(struct crypto_tfm *tfm, const u8 *key, | |
570 | unsigned int keylen) | |
571 | { | |
572 | struct aesni_lrw_ctx *ctx = crypto_tfm_ctx(tfm); | |
573 | int err; | |
574 | ||
575 | err = aes_set_key_common(tfm, ctx->raw_aes_ctx, key, | |
576 | keylen - AES_BLOCK_SIZE); | |
577 | if (err) | |
578 | return err; | |
579 | ||
580 | return lrw_init_table(&ctx->lrw_table, key + keylen - AES_BLOCK_SIZE); | |
581 | } | |
582 | ||
583 | static void lrw_aesni_exit_tfm(struct crypto_tfm *tfm) | |
584 | { | |
585 | struct aesni_lrw_ctx *ctx = crypto_tfm_ctx(tfm); | |
586 | ||
587 | lrw_free_table(&ctx->lrw_table); | |
588 | } | |
589 | ||
590 | static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
591 | struct scatterlist *src, unsigned int nbytes) | |
592 | { | |
593 | struct aesni_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
594 | be128 buf[8]; | |
595 | struct lrw_crypt_req req = { | |
596 | .tbuf = buf, | |
597 | .tbuflen = sizeof(buf), | |
598 | ||
599 | .table_ctx = &ctx->lrw_table, | |
600 | .crypt_ctx = aes_ctx(ctx->raw_aes_ctx), | |
601 | .crypt_fn = lrw_xts_encrypt_callback, | |
602 | }; | |
603 | int ret; | |
604 | ||
605 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
606 | ||
607 | kernel_fpu_begin(); | |
608 | ret = lrw_crypt(desc, dst, src, nbytes, &req); | |
609 | kernel_fpu_end(); | |
610 | ||
611 | return ret; | |
612 | } | |
613 | ||
614 | static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
615 | struct scatterlist *src, unsigned int nbytes) | |
616 | { | |
617 | struct aesni_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
618 | be128 buf[8]; | |
619 | struct lrw_crypt_req req = { | |
620 | .tbuf = buf, | |
621 | .tbuflen = sizeof(buf), | |
622 | ||
623 | .table_ctx = &ctx->lrw_table, | |
624 | .crypt_ctx = aes_ctx(ctx->raw_aes_ctx), | |
625 | .crypt_fn = lrw_xts_decrypt_callback, | |
626 | }; | |
627 | int ret; | |
628 | ||
629 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
630 | ||
631 | kernel_fpu_begin(); | |
632 | ret = lrw_crypt(desc, dst, src, nbytes, &req); | |
633 | kernel_fpu_end(); | |
634 | ||
635 | return ret; | |
636 | } | |
637 | ||
638 | static int xts_aesni_setkey(struct crypto_tfm *tfm, const u8 *key, | |
639 | unsigned int keylen) | |
640 | { | |
641 | struct aesni_xts_ctx *ctx = crypto_tfm_ctx(tfm); | |
023af608 JK |
642 | int err; |
643 | ||
28856a9e SM |
644 | err = xts_check_key(tfm, key, keylen); |
645 | if (err) | |
646 | return err; | |
023af608 JK |
647 | |
648 | /* first half of xts-key is for crypt */ | |
649 | err = aes_set_key_common(tfm, ctx->raw_crypt_ctx, key, keylen / 2); | |
650 | if (err) | |
651 | return err; | |
652 | ||
653 | /* second half of xts-key is for tweak */ | |
654 | return aes_set_key_common(tfm, ctx->raw_tweak_ctx, key + keylen / 2, | |
655 | keylen / 2); | |
656 | } | |
657 | ||
658 | ||
32bec973 JK |
659 | static void aesni_xts_tweak(void *ctx, u8 *out, const u8 *in) |
660 | { | |
661 | aesni_enc(ctx, out, in); | |
662 | } | |
663 | ||
c456a9cd JK |
664 | #ifdef CONFIG_X86_64 |
665 | ||
666 | static void aesni_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
667 | { | |
668 | glue_xts_crypt_128bit_one(ctx, dst, src, iv, GLUE_FUNC_CAST(aesni_enc)); | |
669 | } | |
670 | ||
671 | static void aesni_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
672 | { | |
673 | glue_xts_crypt_128bit_one(ctx, dst, src, iv, GLUE_FUNC_CAST(aesni_dec)); | |
674 | } | |
675 | ||
676 | static void aesni_xts_enc8(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
677 | { | |
678 | aesni_xts_crypt8(ctx, (u8 *)dst, (const u8 *)src, true, (u8 *)iv); | |
679 | } | |
680 | ||
681 | static void aesni_xts_dec8(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
682 | { | |
683 | aesni_xts_crypt8(ctx, (u8 *)dst, (const u8 *)src, false, (u8 *)iv); | |
684 | } | |
685 | ||
686 | static const struct common_glue_ctx aesni_enc_xts = { | |
687 | .num_funcs = 2, | |
688 | .fpu_blocks_limit = 1, | |
689 | ||
690 | .funcs = { { | |
691 | .num_blocks = 8, | |
692 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(aesni_xts_enc8) } | |
693 | }, { | |
694 | .num_blocks = 1, | |
695 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(aesni_xts_enc) } | |
696 | } } | |
697 | }; | |
698 | ||
699 | static const struct common_glue_ctx aesni_dec_xts = { | |
700 | .num_funcs = 2, | |
701 | .fpu_blocks_limit = 1, | |
702 | ||
703 | .funcs = { { | |
704 | .num_blocks = 8, | |
705 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(aesni_xts_dec8) } | |
706 | }, { | |
707 | .num_blocks = 1, | |
708 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(aesni_xts_dec) } | |
709 | } } | |
710 | }; | |
711 | ||
712 | static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
713 | struct scatterlist *src, unsigned int nbytes) | |
714 | { | |
715 | struct aesni_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
716 | ||
717 | return glue_xts_crypt_128bit(&aesni_enc_xts, desc, dst, src, nbytes, | |
718 | XTS_TWEAK_CAST(aesni_xts_tweak), | |
719 | aes_ctx(ctx->raw_tweak_ctx), | |
720 | aes_ctx(ctx->raw_crypt_ctx)); | |
721 | } | |
722 | ||
723 | static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
724 | struct scatterlist *src, unsigned int nbytes) | |
725 | { | |
726 | struct aesni_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
727 | ||
728 | return glue_xts_crypt_128bit(&aesni_dec_xts, desc, dst, src, nbytes, | |
729 | XTS_TWEAK_CAST(aesni_xts_tweak), | |
730 | aes_ctx(ctx->raw_tweak_ctx), | |
731 | aes_ctx(ctx->raw_crypt_ctx)); | |
732 | } | |
733 | ||
734 | #else | |
735 | ||
023af608 JK |
736 | static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, |
737 | struct scatterlist *src, unsigned int nbytes) | |
738 | { | |
739 | struct aesni_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
740 | be128 buf[8]; | |
741 | struct xts_crypt_req req = { | |
742 | .tbuf = buf, | |
743 | .tbuflen = sizeof(buf), | |
744 | ||
745 | .tweak_ctx = aes_ctx(ctx->raw_tweak_ctx), | |
32bec973 | 746 | .tweak_fn = aesni_xts_tweak, |
023af608 JK |
747 | .crypt_ctx = aes_ctx(ctx->raw_crypt_ctx), |
748 | .crypt_fn = lrw_xts_encrypt_callback, | |
749 | }; | |
750 | int ret; | |
751 | ||
752 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
753 | ||
754 | kernel_fpu_begin(); | |
755 | ret = xts_crypt(desc, dst, src, nbytes, &req); | |
756 | kernel_fpu_end(); | |
757 | ||
758 | return ret; | |
759 | } | |
760 | ||
761 | static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
762 | struct scatterlist *src, unsigned int nbytes) | |
763 | { | |
764 | struct aesni_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
765 | be128 buf[8]; | |
766 | struct xts_crypt_req req = { | |
767 | .tbuf = buf, | |
768 | .tbuflen = sizeof(buf), | |
769 | ||
770 | .tweak_ctx = aes_ctx(ctx->raw_tweak_ctx), | |
32bec973 | 771 | .tweak_fn = aesni_xts_tweak, |
023af608 JK |
772 | .crypt_ctx = aes_ctx(ctx->raw_crypt_ctx), |
773 | .crypt_fn = lrw_xts_decrypt_callback, | |
774 | }; | |
775 | int ret; | |
776 | ||
777 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
778 | ||
779 | kernel_fpu_begin(); | |
780 | ret = xts_crypt(desc, dst, src, nbytes, &req); | |
781 | kernel_fpu_end(); | |
782 | ||
783 | return ret; | |
2cf4ac8b | 784 | } |
2cf4ac8b | 785 | |
c456a9cd JK |
786 | #endif |
787 | ||
559ad0ff | 788 | #ifdef CONFIG_X86_64 |
af05b300 | 789 | static int rfc4106_init(struct crypto_aead *aead) |
0bd82f5f TS |
790 | { |
791 | struct cryptd_aead *cryptd_tfm; | |
af05b300 HX |
792 | struct cryptd_aead **ctx = crypto_aead_ctx(aead); |
793 | ||
eabdc320 SM |
794 | cryptd_tfm = cryptd_alloc_aead("__driver-gcm-aes-aesni", |
795 | CRYPTO_ALG_INTERNAL, | |
796 | CRYPTO_ALG_INTERNAL); | |
0bd82f5f TS |
797 | if (IS_ERR(cryptd_tfm)) |
798 | return PTR_ERR(cryptd_tfm); | |
60af520c | 799 | |
af05b300 | 800 | *ctx = cryptd_tfm; |
e9b8d2c2 | 801 | crypto_aead_set_reqsize(aead, crypto_aead_reqsize(&cryptd_tfm->base)); |
0bd82f5f TS |
802 | return 0; |
803 | } | |
804 | ||
af05b300 | 805 | static void rfc4106_exit(struct crypto_aead *aead) |
0bd82f5f | 806 | { |
af05b300 HX |
807 | struct cryptd_aead **ctx = crypto_aead_ctx(aead); |
808 | ||
809 | cryptd_free_aead(*ctx); | |
0bd82f5f TS |
810 | } |
811 | ||
812 | static void | |
813 | rfc4106_set_hash_subkey_done(struct crypto_async_request *req, int err) | |
814 | { | |
815 | struct aesni_gcm_set_hash_subkey_result *result = req->data; | |
816 | ||
817 | if (err == -EINPROGRESS) | |
818 | return; | |
819 | result->err = err; | |
820 | complete(&result->completion); | |
821 | } | |
822 | ||
823 | static int | |
824 | rfc4106_set_hash_subkey(u8 *hash_subkey, const u8 *key, unsigned int key_len) | |
825 | { | |
826 | struct crypto_ablkcipher *ctr_tfm; | |
827 | struct ablkcipher_request *req; | |
828 | int ret = -EINVAL; | |
829 | struct aesni_hash_subkey_req_data *req_data; | |
830 | ||
831 | ctr_tfm = crypto_alloc_ablkcipher("ctr(aes)", 0, 0); | |
832 | if (IS_ERR(ctr_tfm)) | |
833 | return PTR_ERR(ctr_tfm); | |
834 | ||
0bd82f5f | 835 | ret = crypto_ablkcipher_setkey(ctr_tfm, key, key_len); |
7efd95f6 | 836 | if (ret) |
fc9044e2 | 837 | goto out_free_ablkcipher; |
0bd82f5f | 838 | |
fc9044e2 | 839 | ret = -ENOMEM; |
0bd82f5f | 840 | req = ablkcipher_request_alloc(ctr_tfm, GFP_KERNEL); |
fc9044e2 | 841 | if (!req) |
7efd95f6 | 842 | goto out_free_ablkcipher; |
0bd82f5f TS |
843 | |
844 | req_data = kmalloc(sizeof(*req_data), GFP_KERNEL); | |
fc9044e2 | 845 | if (!req_data) |
7efd95f6 | 846 | goto out_free_request; |
fc9044e2 | 847 | |
0bd82f5f TS |
848 | memset(req_data->iv, 0, sizeof(req_data->iv)); |
849 | ||
850 | /* Clear the data in the hash sub key container to zero.*/ | |
851 | /* We want to cipher all zeros to create the hash sub key. */ | |
852 | memset(hash_subkey, 0, RFC4106_HASH_SUBKEY_SIZE); | |
853 | ||
854 | init_completion(&req_data->result.completion); | |
855 | sg_init_one(&req_data->sg, hash_subkey, RFC4106_HASH_SUBKEY_SIZE); | |
856 | ablkcipher_request_set_tfm(req, ctr_tfm); | |
857 | ablkcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_SLEEP | | |
858 | CRYPTO_TFM_REQ_MAY_BACKLOG, | |
859 | rfc4106_set_hash_subkey_done, | |
860 | &req_data->result); | |
861 | ||
862 | ablkcipher_request_set_crypt(req, &req_data->sg, | |
863 | &req_data->sg, RFC4106_HASH_SUBKEY_SIZE, req_data->iv); | |
864 | ||
865 | ret = crypto_ablkcipher_encrypt(req); | |
866 | if (ret == -EINPROGRESS || ret == -EBUSY) { | |
867 | ret = wait_for_completion_interruptible | |
868 | (&req_data->result.completion); | |
869 | if (!ret) | |
870 | ret = req_data->result.err; | |
871 | } | |
fc9044e2 | 872 | kfree(req_data); |
7efd95f6 | 873 | out_free_request: |
0bd82f5f | 874 | ablkcipher_request_free(req); |
7efd95f6 | 875 | out_free_ablkcipher: |
0bd82f5f TS |
876 | crypto_free_ablkcipher(ctr_tfm); |
877 | return ret; | |
878 | } | |
879 | ||
81e397d9 TS |
880 | static int common_rfc4106_set_key(struct crypto_aead *aead, const u8 *key, |
881 | unsigned int key_len) | |
0bd82f5f | 882 | { |
81e397d9 | 883 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(aead); |
0bd82f5f TS |
884 | |
885 | if (key_len < 4) { | |
b7c89d9e | 886 | crypto_aead_set_flags(aead, CRYPTO_TFM_RES_BAD_KEY_LEN); |
0bd82f5f TS |
887 | return -EINVAL; |
888 | } | |
889 | /*Account for 4 byte nonce at the end.*/ | |
890 | key_len -= 4; | |
0bd82f5f TS |
891 | |
892 | memcpy(ctx->nonce, key + key_len, sizeof(ctx->nonce)); | |
0bd82f5f | 893 | |
b7c89d9e HX |
894 | return aes_set_key_common(crypto_aead_tfm(aead), |
895 | &ctx->aes_key_expanded, key, key_len) ?: | |
896 | rfc4106_set_hash_subkey(ctx->hash_subkey, key, key_len); | |
0bd82f5f TS |
897 | } |
898 | ||
81e397d9 TS |
899 | static int rfc4106_set_key(struct crypto_aead *parent, const u8 *key, |
900 | unsigned int key_len) | |
0bd82f5f | 901 | { |
af05b300 HX |
902 | struct cryptd_aead **ctx = crypto_aead_ctx(parent); |
903 | struct cryptd_aead *cryptd_tfm = *ctx; | |
0bd82f5f | 904 | |
af05b300 | 905 | return crypto_aead_setkey(&cryptd_tfm->base, key, key_len); |
81e397d9 TS |
906 | } |
907 | ||
908 | static int common_rfc4106_set_authsize(struct crypto_aead *aead, | |
909 | unsigned int authsize) | |
910 | { | |
0bd82f5f TS |
911 | switch (authsize) { |
912 | case 8: | |
913 | case 12: | |
914 | case 16: | |
915 | break; | |
916 | default: | |
917 | return -EINVAL; | |
918 | } | |
b7c89d9e | 919 | |
0bd82f5f TS |
920 | return 0; |
921 | } | |
922 | ||
81e397d9 TS |
923 | /* This is the Integrity Check Value (aka the authentication tag length and can |
924 | * be 8, 12 or 16 bytes long. */ | |
925 | static int rfc4106_set_authsize(struct crypto_aead *parent, | |
926 | unsigned int authsize) | |
0bd82f5f | 927 | { |
af05b300 HX |
928 | struct cryptd_aead **ctx = crypto_aead_ctx(parent); |
929 | struct cryptd_aead *cryptd_tfm = *ctx; | |
0bd82f5f | 930 | |
af05b300 | 931 | return crypto_aead_setauthsize(&cryptd_tfm->base, authsize); |
0bd82f5f TS |
932 | } |
933 | ||
b7c89d9e | 934 | static int helper_rfc4106_encrypt(struct aead_request *req) |
0bd82f5f TS |
935 | { |
936 | u8 one_entry_in_sg = 0; | |
937 | u8 *src, *dst, *assoc; | |
938 | __be32 counter = cpu_to_be32(1); | |
939 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
940 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm); | |
941 | void *aes_ctx = &(ctx->aes_key_expanded); | |
942 | unsigned long auth_tag_len = crypto_aead_authsize(tfm); | |
b7c89d9e | 943 | u8 iv[16] __attribute__ ((__aligned__(AESNI_ALIGN))); |
0bd82f5f | 944 | struct scatter_walk src_sg_walk; |
0bd82f5f TS |
945 | struct scatter_walk dst_sg_walk; |
946 | unsigned int i; | |
947 | ||
948 | /* Assuming we are supporting rfc4106 64-bit extended */ | |
949 | /* sequence numbers We need to have the AAD length equal */ | |
e9b8d2c2 HX |
950 | /* to 16 or 20 bytes */ |
951 | if (unlikely(req->assoclen != 16 && req->assoclen != 20)) | |
0bd82f5f | 952 | return -EINVAL; |
e31ac32d | 953 | |
0bd82f5f TS |
954 | /* IV below built */ |
955 | for (i = 0; i < 4; i++) | |
956 | *(iv+i) = ctx->nonce[i]; | |
957 | for (i = 0; i < 8; i++) | |
958 | *(iv+4+i) = req->iv[i]; | |
959 | *((__be32 *)(iv+12)) = counter; | |
960 | ||
b7c89d9e HX |
961 | if (sg_is_last(req->src) && |
962 | req->src->offset + req->src->length <= PAGE_SIZE && | |
963 | sg_is_last(req->dst) && | |
964 | req->dst->offset + req->dst->length <= PAGE_SIZE) { | |
0bd82f5f TS |
965 | one_entry_in_sg = 1; |
966 | scatterwalk_start(&src_sg_walk, req->src); | |
b7c89d9e HX |
967 | assoc = scatterwalk_map(&src_sg_walk); |
968 | src = assoc + req->assoclen; | |
0bd82f5f TS |
969 | dst = src; |
970 | if (unlikely(req->src != req->dst)) { | |
971 | scatterwalk_start(&dst_sg_walk, req->dst); | |
b7c89d9e | 972 | dst = scatterwalk_map(&dst_sg_walk) + req->assoclen; |
0bd82f5f | 973 | } |
0bd82f5f TS |
974 | } else { |
975 | /* Allocate memory for src, dst, assoc */ | |
b7c89d9e | 976 | assoc = kmalloc(req->cryptlen + auth_tag_len + req->assoclen, |
0bd82f5f | 977 | GFP_ATOMIC); |
b7c89d9e | 978 | if (unlikely(!assoc)) |
0bd82f5f | 979 | return -ENOMEM; |
b7c89d9e HX |
980 | scatterwalk_map_and_copy(assoc, req->src, 0, |
981 | req->assoclen + req->cryptlen, 0); | |
982 | src = assoc + req->assoclen; | |
0bd82f5f TS |
983 | dst = src; |
984 | } | |
985 | ||
b7c89d9e | 986 | kernel_fpu_begin(); |
e9b8d2c2 HX |
987 | aesni_gcm_enc_tfm(aes_ctx, dst, src, req->cryptlen, iv, |
988 | ctx->hash_subkey, assoc, req->assoclen - 8, | |
989 | dst + req->cryptlen, auth_tag_len); | |
b7c89d9e | 990 | kernel_fpu_end(); |
0bd82f5f TS |
991 | |
992 | /* The authTag (aka the Integrity Check Value) needs to be written | |
993 | * back to the packet. */ | |
994 | if (one_entry_in_sg) { | |
995 | if (unlikely(req->src != req->dst)) { | |
b7c89d9e HX |
996 | scatterwalk_unmap(dst - req->assoclen); |
997 | scatterwalk_advance(&dst_sg_walk, req->dst->length); | |
998 | scatterwalk_done(&dst_sg_walk, 1, 0); | |
0bd82f5f | 999 | } |
8fd75e12 | 1000 | scatterwalk_unmap(assoc); |
b7c89d9e HX |
1001 | scatterwalk_advance(&src_sg_walk, req->src->length); |
1002 | scatterwalk_done(&src_sg_walk, req->src == req->dst, 0); | |
0bd82f5f | 1003 | } else { |
b7c89d9e HX |
1004 | scatterwalk_map_and_copy(dst, req->dst, req->assoclen, |
1005 | req->cryptlen + auth_tag_len, 1); | |
1006 | kfree(assoc); | |
0bd82f5f TS |
1007 | } |
1008 | return 0; | |
1009 | } | |
1010 | ||
b7c89d9e | 1011 | static int helper_rfc4106_decrypt(struct aead_request *req) |
0bd82f5f TS |
1012 | { |
1013 | u8 one_entry_in_sg = 0; | |
1014 | u8 *src, *dst, *assoc; | |
1015 | unsigned long tempCipherLen = 0; | |
1016 | __be32 counter = cpu_to_be32(1); | |
1017 | int retval = 0; | |
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); | |
b7c89d9e HX |
1022 | u8 iv[16] __attribute__ ((__aligned__(AESNI_ALIGN))); |
1023 | u8 authTag[16]; | |
0bd82f5f | 1024 | struct scatter_walk src_sg_walk; |
0bd82f5f TS |
1025 | struct scatter_walk dst_sg_walk; |
1026 | unsigned int i; | |
1027 | ||
e9b8d2c2 | 1028 | if (unlikely(req->assoclen != 16 && req->assoclen != 20)) |
0bd82f5f | 1029 | return -EINVAL; |
e31ac32d | 1030 | |
0bd82f5f TS |
1031 | /* Assuming we are supporting rfc4106 64-bit extended */ |
1032 | /* sequence numbers We need to have the AAD length */ | |
e9b8d2c2 | 1033 | /* equal to 16 or 20 bytes */ |
0bd82f5f TS |
1034 | |
1035 | tempCipherLen = (unsigned long)(req->cryptlen - auth_tag_len); | |
1036 | /* IV below built */ | |
1037 | for (i = 0; i < 4; i++) | |
1038 | *(iv+i) = ctx->nonce[i]; | |
1039 | for (i = 0; i < 8; i++) | |
1040 | *(iv+4+i) = req->iv[i]; | |
1041 | *((__be32 *)(iv+12)) = counter; | |
1042 | ||
b7c89d9e HX |
1043 | if (sg_is_last(req->src) && |
1044 | req->src->offset + req->src->length <= PAGE_SIZE && | |
1045 | sg_is_last(req->dst) && | |
1046 | req->dst->offset + req->dst->length <= PAGE_SIZE) { | |
0bd82f5f TS |
1047 | one_entry_in_sg = 1; |
1048 | scatterwalk_start(&src_sg_walk, req->src); | |
b7c89d9e HX |
1049 | assoc = scatterwalk_map(&src_sg_walk); |
1050 | src = assoc + req->assoclen; | |
0bd82f5f TS |
1051 | dst = src; |
1052 | if (unlikely(req->src != req->dst)) { | |
1053 | scatterwalk_start(&dst_sg_walk, req->dst); | |
b7c89d9e | 1054 | dst = scatterwalk_map(&dst_sg_walk) + req->assoclen; |
0bd82f5f TS |
1055 | } |
1056 | ||
1057 | } else { | |
1058 | /* Allocate memory for src, dst, assoc */ | |
b7c89d9e HX |
1059 | assoc = kmalloc(req->cryptlen + req->assoclen, GFP_ATOMIC); |
1060 | if (!assoc) | |
0bd82f5f | 1061 | return -ENOMEM; |
b7c89d9e HX |
1062 | scatterwalk_map_and_copy(assoc, req->src, 0, |
1063 | req->assoclen + req->cryptlen, 0); | |
1064 | src = assoc + req->assoclen; | |
0bd82f5f TS |
1065 | dst = src; |
1066 | } | |
1067 | ||
b7c89d9e | 1068 | kernel_fpu_begin(); |
d764593a | 1069 | aesni_gcm_dec_tfm(aes_ctx, dst, src, tempCipherLen, iv, |
e9b8d2c2 HX |
1070 | ctx->hash_subkey, assoc, req->assoclen - 8, |
1071 | authTag, auth_tag_len); | |
b7c89d9e | 1072 | kernel_fpu_end(); |
0bd82f5f TS |
1073 | |
1074 | /* Compare generated tag with passed in tag. */ | |
fed28611 | 1075 | retval = crypto_memneq(src + tempCipherLen, authTag, auth_tag_len) ? |
0bd82f5f TS |
1076 | -EBADMSG : 0; |
1077 | ||
1078 | if (one_entry_in_sg) { | |
1079 | if (unlikely(req->src != req->dst)) { | |
b7c89d9e HX |
1080 | scatterwalk_unmap(dst - req->assoclen); |
1081 | scatterwalk_advance(&dst_sg_walk, req->dst->length); | |
1082 | scatterwalk_done(&dst_sg_walk, 1, 0); | |
0bd82f5f | 1083 | } |
8fd75e12 | 1084 | scatterwalk_unmap(assoc); |
b7c89d9e HX |
1085 | scatterwalk_advance(&src_sg_walk, req->src->length); |
1086 | scatterwalk_done(&src_sg_walk, req->src == req->dst, 0); | |
0bd82f5f | 1087 | } else { |
b7c89d9e HX |
1088 | scatterwalk_map_and_copy(dst, req->dst, req->assoclen, |
1089 | tempCipherLen, 1); | |
1090 | kfree(assoc); | |
0bd82f5f TS |
1091 | } |
1092 | return retval; | |
1093 | } | |
81e397d9 TS |
1094 | |
1095 | static int rfc4106_encrypt(struct aead_request *req) | |
1096 | { | |
81e397d9 | 1097 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); |
af05b300 HX |
1098 | struct cryptd_aead **ctx = crypto_aead_ctx(tfm); |
1099 | struct cryptd_aead *cryptd_tfm = *ctx; | |
81e397d9 | 1100 | |
e9b8d2c2 HX |
1101 | aead_request_set_tfm(req, irq_fpu_usable() ? |
1102 | cryptd_aead_child(cryptd_tfm) : | |
1103 | &cryptd_tfm->base); | |
81e397d9 | 1104 | |
e9b8d2c2 | 1105 | return crypto_aead_encrypt(req); |
81e397d9 TS |
1106 | } |
1107 | ||
1108 | static int rfc4106_decrypt(struct aead_request *req) | |
1109 | { | |
81e397d9 | 1110 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); |
af05b300 HX |
1111 | struct cryptd_aead **ctx = crypto_aead_ctx(tfm); |
1112 | struct cryptd_aead *cryptd_tfm = *ctx; | |
81e397d9 | 1113 | |
e9b8d2c2 HX |
1114 | aead_request_set_tfm(req, irq_fpu_usable() ? |
1115 | cryptd_aead_child(cryptd_tfm) : | |
1116 | &cryptd_tfm->base); | |
81e397d9 | 1117 | |
e9b8d2c2 | 1118 | return crypto_aead_decrypt(req); |
81e397d9 | 1119 | } |
fa46ccb8 | 1120 | #endif |
0bd82f5f | 1121 | |
fa46ccb8 JK |
1122 | static struct crypto_alg aesni_algs[] = { { |
1123 | .cra_name = "aes", | |
1124 | .cra_driver_name = "aes-aesni", | |
1125 | .cra_priority = 300, | |
1126 | .cra_flags = CRYPTO_ALG_TYPE_CIPHER, | |
1127 | .cra_blocksize = AES_BLOCK_SIZE, | |
1128 | .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
1129 | AESNI_ALIGN - 1, | |
1130 | .cra_alignmask = 0, | |
1131 | .cra_module = THIS_MODULE, | |
1132 | .cra_u = { | |
1133 | .cipher = { | |
1134 | .cia_min_keysize = AES_MIN_KEY_SIZE, | |
1135 | .cia_max_keysize = AES_MAX_KEY_SIZE, | |
1136 | .cia_setkey = aes_set_key, | |
1137 | .cia_encrypt = aes_encrypt, | |
1138 | .cia_decrypt = aes_decrypt | |
1139 | } | |
1140 | } | |
1141 | }, { | |
1142 | .cra_name = "__aes-aesni", | |
1143 | .cra_driver_name = "__driver-aes-aesni", | |
1144 | .cra_priority = 0, | |
eabdc320 | 1145 | .cra_flags = CRYPTO_ALG_TYPE_CIPHER | CRYPTO_ALG_INTERNAL, |
fa46ccb8 JK |
1146 | .cra_blocksize = AES_BLOCK_SIZE, |
1147 | .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
1148 | AESNI_ALIGN - 1, | |
1149 | .cra_alignmask = 0, | |
1150 | .cra_module = THIS_MODULE, | |
1151 | .cra_u = { | |
1152 | .cipher = { | |
1153 | .cia_min_keysize = AES_MIN_KEY_SIZE, | |
1154 | .cia_max_keysize = AES_MAX_KEY_SIZE, | |
1155 | .cia_setkey = aes_set_key, | |
1156 | .cia_encrypt = __aes_encrypt, | |
1157 | .cia_decrypt = __aes_decrypt | |
1158 | } | |
1159 | } | |
1160 | }, { | |
1161 | .cra_name = "__ecb-aes-aesni", | |
1162 | .cra_driver_name = "__driver-ecb-aes-aesni", | |
1163 | .cra_priority = 0, | |
eabdc320 SM |
1164 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
1165 | CRYPTO_ALG_INTERNAL, | |
fa46ccb8 JK |
1166 | .cra_blocksize = AES_BLOCK_SIZE, |
1167 | .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
1168 | AESNI_ALIGN - 1, | |
1169 | .cra_alignmask = 0, | |
1170 | .cra_type = &crypto_blkcipher_type, | |
1171 | .cra_module = THIS_MODULE, | |
1172 | .cra_u = { | |
1173 | .blkcipher = { | |
1174 | .min_keysize = AES_MIN_KEY_SIZE, | |
1175 | .max_keysize = AES_MAX_KEY_SIZE, | |
1176 | .setkey = aes_set_key, | |
1177 | .encrypt = ecb_encrypt, | |
1178 | .decrypt = ecb_decrypt, | |
1179 | }, | |
1180 | }, | |
1181 | }, { | |
1182 | .cra_name = "__cbc-aes-aesni", | |
1183 | .cra_driver_name = "__driver-cbc-aes-aesni", | |
1184 | .cra_priority = 0, | |
eabdc320 SM |
1185 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
1186 | CRYPTO_ALG_INTERNAL, | |
fa46ccb8 JK |
1187 | .cra_blocksize = AES_BLOCK_SIZE, |
1188 | .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
1189 | AESNI_ALIGN - 1, | |
1190 | .cra_alignmask = 0, | |
1191 | .cra_type = &crypto_blkcipher_type, | |
1192 | .cra_module = THIS_MODULE, | |
1193 | .cra_u = { | |
1194 | .blkcipher = { | |
1195 | .min_keysize = AES_MIN_KEY_SIZE, | |
1196 | .max_keysize = AES_MAX_KEY_SIZE, | |
1197 | .setkey = aes_set_key, | |
1198 | .encrypt = cbc_encrypt, | |
1199 | .decrypt = cbc_decrypt, | |
1200 | }, | |
1201 | }, | |
1202 | }, { | |
1203 | .cra_name = "ecb(aes)", | |
1204 | .cra_driver_name = "ecb-aes-aesni", | |
1205 | .cra_priority = 400, | |
1206 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1207 | .cra_blocksize = AES_BLOCK_SIZE, | |
a9629d71 | 1208 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1209 | .cra_alignmask = 0, |
1210 | .cra_type = &crypto_ablkcipher_type, | |
1211 | .cra_module = THIS_MODULE, | |
1212 | .cra_init = ablk_ecb_init, | |
1213 | .cra_exit = ablk_exit, | |
1214 | .cra_u = { | |
1215 | .ablkcipher = { | |
1216 | .min_keysize = AES_MIN_KEY_SIZE, | |
1217 | .max_keysize = AES_MAX_KEY_SIZE, | |
1218 | .setkey = ablk_set_key, | |
1219 | .encrypt = ablk_encrypt, | |
1220 | .decrypt = ablk_decrypt, | |
1221 | }, | |
1222 | }, | |
1223 | }, { | |
1224 | .cra_name = "cbc(aes)", | |
1225 | .cra_driver_name = "cbc-aes-aesni", | |
1226 | .cra_priority = 400, | |
1227 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1228 | .cra_blocksize = AES_BLOCK_SIZE, | |
a9629d71 | 1229 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1230 | .cra_alignmask = 0, |
1231 | .cra_type = &crypto_ablkcipher_type, | |
1232 | .cra_module = THIS_MODULE, | |
1233 | .cra_init = ablk_cbc_init, | |
1234 | .cra_exit = ablk_exit, | |
1235 | .cra_u = { | |
1236 | .ablkcipher = { | |
1237 | .min_keysize = AES_MIN_KEY_SIZE, | |
1238 | .max_keysize = AES_MAX_KEY_SIZE, | |
1239 | .ivsize = AES_BLOCK_SIZE, | |
1240 | .setkey = ablk_set_key, | |
1241 | .encrypt = ablk_encrypt, | |
1242 | .decrypt = ablk_decrypt, | |
1243 | }, | |
1244 | }, | |
1245 | #ifdef CONFIG_X86_64 | |
1246 | }, { | |
1247 | .cra_name = "__ctr-aes-aesni", | |
1248 | .cra_driver_name = "__driver-ctr-aes-aesni", | |
1249 | .cra_priority = 0, | |
eabdc320 SM |
1250 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
1251 | CRYPTO_ALG_INTERNAL, | |
fa46ccb8 JK |
1252 | .cra_blocksize = 1, |
1253 | .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
1254 | AESNI_ALIGN - 1, | |
1255 | .cra_alignmask = 0, | |
1256 | .cra_type = &crypto_blkcipher_type, | |
1257 | .cra_module = THIS_MODULE, | |
1258 | .cra_u = { | |
1259 | .blkcipher = { | |
1260 | .min_keysize = AES_MIN_KEY_SIZE, | |
1261 | .max_keysize = AES_MAX_KEY_SIZE, | |
1262 | .ivsize = AES_BLOCK_SIZE, | |
1263 | .setkey = aes_set_key, | |
1264 | .encrypt = ctr_crypt, | |
1265 | .decrypt = ctr_crypt, | |
1266 | }, | |
1267 | }, | |
1268 | }, { | |
1269 | .cra_name = "ctr(aes)", | |
1270 | .cra_driver_name = "ctr-aes-aesni", | |
1271 | .cra_priority = 400, | |
1272 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1273 | .cra_blocksize = 1, | |
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_ctr_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 | .ivsize = AES_BLOCK_SIZE, | |
1285 | .setkey = ablk_set_key, | |
1286 | .encrypt = ablk_encrypt, | |
1287 | .decrypt = ablk_encrypt, | |
1288 | .geniv = "chainiv", | |
1289 | }, | |
1290 | }, | |
fa46ccb8 | 1291 | #endif |
304576a7 | 1292 | #if IS_ENABLED(CONFIG_CRYPTO_PCBC) |
fa46ccb8 | 1293 | }, { |
023af608 JK |
1294 | .cra_name = "pcbc(aes)", |
1295 | .cra_driver_name = "pcbc-aes-aesni", | |
fa46ccb8 JK |
1296 | .cra_priority = 400, |
1297 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1298 | .cra_blocksize = AES_BLOCK_SIZE, | |
a9629d71 | 1299 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1300 | .cra_alignmask = 0, |
1301 | .cra_type = &crypto_ablkcipher_type, | |
1302 | .cra_module = THIS_MODULE, | |
023af608 | 1303 | .cra_init = ablk_pcbc_init, |
fa46ccb8 JK |
1304 | .cra_exit = ablk_exit, |
1305 | .cra_u = { | |
1306 | .ablkcipher = { | |
023af608 JK |
1307 | .min_keysize = AES_MIN_KEY_SIZE, |
1308 | .max_keysize = AES_MAX_KEY_SIZE, | |
fa46ccb8 JK |
1309 | .ivsize = AES_BLOCK_SIZE, |
1310 | .setkey = ablk_set_key, | |
1311 | .encrypt = ablk_encrypt, | |
1312 | .decrypt = ablk_decrypt, | |
1313 | }, | |
1314 | }, | |
1315 | #endif | |
fa46ccb8 | 1316 | }, { |
023af608 JK |
1317 | .cra_name = "__lrw-aes-aesni", |
1318 | .cra_driver_name = "__driver-lrw-aes-aesni", | |
1319 | .cra_priority = 0, | |
eabdc320 SM |
1320 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
1321 | CRYPTO_ALG_INTERNAL, | |
023af608 JK |
1322 | .cra_blocksize = AES_BLOCK_SIZE, |
1323 | .cra_ctxsize = sizeof(struct aesni_lrw_ctx), | |
1324 | .cra_alignmask = 0, | |
1325 | .cra_type = &crypto_blkcipher_type, | |
1326 | .cra_module = THIS_MODULE, | |
1327 | .cra_exit = lrw_aesni_exit_tfm, | |
1328 | .cra_u = { | |
1329 | .blkcipher = { | |
1330 | .min_keysize = AES_MIN_KEY_SIZE + AES_BLOCK_SIZE, | |
1331 | .max_keysize = AES_MAX_KEY_SIZE + AES_BLOCK_SIZE, | |
1332 | .ivsize = AES_BLOCK_SIZE, | |
1333 | .setkey = lrw_aesni_setkey, | |
1334 | .encrypt = lrw_encrypt, | |
1335 | .decrypt = lrw_decrypt, | |
1336 | }, | |
1337 | }, | |
1338 | }, { | |
1339 | .cra_name = "__xts-aes-aesni", | |
1340 | .cra_driver_name = "__driver-xts-aes-aesni", | |
1341 | .cra_priority = 0, | |
eabdc320 SM |
1342 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
1343 | CRYPTO_ALG_INTERNAL, | |
023af608 JK |
1344 | .cra_blocksize = AES_BLOCK_SIZE, |
1345 | .cra_ctxsize = sizeof(struct aesni_xts_ctx), | |
1346 | .cra_alignmask = 0, | |
1347 | .cra_type = &crypto_blkcipher_type, | |
1348 | .cra_module = THIS_MODULE, | |
1349 | .cra_u = { | |
1350 | .blkcipher = { | |
1351 | .min_keysize = 2 * AES_MIN_KEY_SIZE, | |
1352 | .max_keysize = 2 * AES_MAX_KEY_SIZE, | |
1353 | .ivsize = AES_BLOCK_SIZE, | |
1354 | .setkey = xts_aesni_setkey, | |
1355 | .encrypt = xts_encrypt, | |
1356 | .decrypt = xts_decrypt, | |
1357 | }, | |
1358 | }, | |
1359 | }, { | |
1360 | .cra_name = "lrw(aes)", | |
1361 | .cra_driver_name = "lrw-aes-aesni", | |
fa46ccb8 JK |
1362 | .cra_priority = 400, |
1363 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
1364 | .cra_blocksize = AES_BLOCK_SIZE, | |
a9629d71 | 1365 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
fa46ccb8 JK |
1366 | .cra_alignmask = 0, |
1367 | .cra_type = &crypto_ablkcipher_type, | |
1368 | .cra_module = THIS_MODULE, | |
023af608 | 1369 | .cra_init = ablk_init, |
fa46ccb8 JK |
1370 | .cra_exit = ablk_exit, |
1371 | .cra_u = { | |
1372 | .ablkcipher = { | |
023af608 JK |
1373 | .min_keysize = AES_MIN_KEY_SIZE + AES_BLOCK_SIZE, |
1374 | .max_keysize = AES_MAX_KEY_SIZE + AES_BLOCK_SIZE, | |
fa46ccb8 JK |
1375 | .ivsize = AES_BLOCK_SIZE, |
1376 | .setkey = ablk_set_key, | |
1377 | .encrypt = ablk_encrypt, | |
1378 | .decrypt = ablk_decrypt, | |
1379 | }, | |
1380 | }, | |
fa46ccb8 JK |
1381 | }, { |
1382 | .cra_name = "xts(aes)", | |
1383 | .cra_driver_name = "xts-aes-aesni", | |
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_init, |
fa46ccb8 JK |
1392 | .cra_exit = ablk_exit, |
1393 | .cra_u = { | |
1394 | .ablkcipher = { | |
1395 | .min_keysize = 2 * AES_MIN_KEY_SIZE, | |
1396 | .max_keysize = 2 * AES_MAX_KEY_SIZE, | |
1397 | .ivsize = AES_BLOCK_SIZE, | |
1398 | .setkey = ablk_set_key, | |
1399 | .encrypt = ablk_encrypt, | |
1400 | .decrypt = ablk_decrypt, | |
1401 | }, | |
1402 | }, | |
fa46ccb8 | 1403 | } }; |
0bd82f5f | 1404 | |
af05b300 HX |
1405 | #ifdef CONFIG_X86_64 |
1406 | static struct aead_alg aesni_aead_algs[] = { { | |
b7c89d9e HX |
1407 | .setkey = common_rfc4106_set_key, |
1408 | .setauthsize = common_rfc4106_set_authsize, | |
1409 | .encrypt = helper_rfc4106_encrypt, | |
1410 | .decrypt = helper_rfc4106_decrypt, | |
1411 | .ivsize = 8, | |
1412 | .maxauthsize = 16, | |
1413 | .base = { | |
1414 | .cra_name = "__gcm-aes-aesni", | |
1415 | .cra_driver_name = "__driver-gcm-aes-aesni", | |
1416 | .cra_flags = CRYPTO_ALG_INTERNAL, | |
1417 | .cra_blocksize = 1, | |
1418 | .cra_ctxsize = sizeof(struct aesni_rfc4106_gcm_ctx), | |
1419 | .cra_alignmask = AESNI_ALIGN - 1, | |
1420 | .cra_module = THIS_MODULE, | |
1421 | }, | |
1422 | }, { | |
af05b300 HX |
1423 | .init = rfc4106_init, |
1424 | .exit = rfc4106_exit, | |
1425 | .setkey = rfc4106_set_key, | |
1426 | .setauthsize = rfc4106_set_authsize, | |
1427 | .encrypt = rfc4106_encrypt, | |
1428 | .decrypt = rfc4106_decrypt, | |
1429 | .ivsize = 8, | |
1430 | .maxauthsize = 16, | |
1431 | .base = { | |
1432 | .cra_name = "rfc4106(gcm(aes))", | |
1433 | .cra_driver_name = "rfc4106-gcm-aesni", | |
1434 | .cra_priority = 400, | |
5e4b8c1f | 1435 | .cra_flags = CRYPTO_ALG_ASYNC, |
af05b300 HX |
1436 | .cra_blocksize = 1, |
1437 | .cra_ctxsize = sizeof(struct cryptd_aead *), | |
1438 | .cra_module = THIS_MODULE, | |
1439 | }, | |
1440 | } }; | |
1441 | #else | |
1442 | static struct aead_alg aesni_aead_algs[0]; | |
1443 | #endif | |
1444 | ||
3bd391f0 AK |
1445 | |
1446 | static const struct x86_cpu_id aesni_cpu_id[] = { | |
1447 | X86_FEATURE_MATCH(X86_FEATURE_AES), | |
1448 | {} | |
1449 | }; | |
1450 | MODULE_DEVICE_TABLE(x86cpu, aesni_cpu_id); | |
1451 | ||
54b6a1bd HY |
1452 | static int __init aesni_init(void) |
1453 | { | |
7af6c245 | 1454 | int err; |
54b6a1bd | 1455 | |
3bd391f0 | 1456 | if (!x86_match_cpu(aesni_cpu_id)) |
54b6a1bd | 1457 | return -ENODEV; |
8610d7bf | 1458 | #ifdef CONFIG_X86_64 |
d764593a TC |
1459 | #ifdef CONFIG_AS_AVX2 |
1460 | if (boot_cpu_has(X86_FEATURE_AVX2)) { | |
1461 | pr_info("AVX2 version of gcm_enc/dec engaged.\n"); | |
1462 | aesni_gcm_enc_tfm = aesni_gcm_enc_avx2; | |
1463 | aesni_gcm_dec_tfm = aesni_gcm_dec_avx2; | |
1464 | } else | |
1465 | #endif | |
1466 | #ifdef CONFIG_AS_AVX | |
1467 | if (boot_cpu_has(X86_FEATURE_AVX)) { | |
1468 | pr_info("AVX version of gcm_enc/dec engaged.\n"); | |
1469 | aesni_gcm_enc_tfm = aesni_gcm_enc_avx; | |
1470 | aesni_gcm_dec_tfm = aesni_gcm_dec_avx; | |
1471 | } else | |
1472 | #endif | |
1473 | { | |
1474 | pr_info("SSE version of gcm_enc/dec engaged.\n"); | |
1475 | aesni_gcm_enc_tfm = aesni_gcm_enc; | |
1476 | aesni_gcm_dec_tfm = aesni_gcm_dec; | |
1477 | } | |
22cddcc7 | 1478 | aesni_ctr_enc_tfm = aesni_ctr_enc; |
5cfed7b3 | 1479 | #ifdef CONFIG_AS_AVX |
22cddcc7 | 1480 | if (cpu_has_avx) { |
1481 | /* optimize performance of ctr mode encryption transform */ | |
1482 | aesni_ctr_enc_tfm = aesni_ctr_enc_avx_tfm; | |
1483 | pr_info("AES CTR mode by8 optimization enabled\n"); | |
1484 | } | |
1485 | #endif | |
8610d7bf | 1486 | #endif |
0bd82f5f | 1487 | |
fa46ccb8 JK |
1488 | err = crypto_fpu_init(); |
1489 | if (err) | |
1490 | return err; | |
54b6a1bd | 1491 | |
af05b300 HX |
1492 | err = crypto_register_algs(aesni_algs, ARRAY_SIZE(aesni_algs)); |
1493 | if (err) | |
1494 | goto fpu_exit; | |
1495 | ||
1496 | err = crypto_register_aeads(aesni_aead_algs, | |
1497 | ARRAY_SIZE(aesni_aead_algs)); | |
1498 | if (err) | |
1499 | goto unregister_algs; | |
1500 | ||
1501 | return err; | |
1502 | ||
1503 | unregister_algs: | |
1504 | crypto_unregister_algs(aesni_algs, ARRAY_SIZE(aesni_algs)); | |
1505 | fpu_exit: | |
1506 | crypto_fpu_exit(); | |
1507 | return err; | |
54b6a1bd HY |
1508 | } |
1509 | ||
1510 | static void __exit aesni_exit(void) | |
1511 | { | |
af05b300 | 1512 | crypto_unregister_aeads(aesni_aead_algs, ARRAY_SIZE(aesni_aead_algs)); |
fa46ccb8 | 1513 | crypto_unregister_algs(aesni_algs, ARRAY_SIZE(aesni_algs)); |
b23b6451 AL |
1514 | |
1515 | crypto_fpu_exit(); | |
54b6a1bd HY |
1516 | } |
1517 | ||
0fbafd06 | 1518 | late_initcall(aesni_init); |
54b6a1bd HY |
1519 | module_exit(aesni_exit); |
1520 | ||
1521 | MODULE_DESCRIPTION("Rijndael (AES) Cipher Algorithm, Intel AES-NI instructions optimized"); | |
1522 | MODULE_LICENSE("GPL"); | |
5d26a105 | 1523 | MODULE_ALIAS_CRYPTO("aes"); |