Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 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 | * |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 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 | * |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 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> |
Paul Gortmaker | 7c52d55 | 2011-05-27 12:33:10 -0400 | [diff] [blame] | 25 | #include <linux/module.h> |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 26 | #include <linux/err.h> |
| 27 | #include <crypto/algapi.h> |
| 28 | #include <crypto/aes.h> |
| 29 | #include <crypto/cryptd.h> |
Huang Ying | 12387a4 | 2010-03-10 18:28:55 +0800 | [diff] [blame] | 30 | #include <crypto/ctr.h> |
Jussi Kivilinna | 023af60 | 2012-07-22 18:18:37 +0300 | [diff] [blame] | 31 | #include <crypto/b128ops.h> |
| 32 | #include <crypto/lrw.h> |
| 33 | #include <crypto/xts.h> |
Andi Kleen | 3bd391f | 2012-01-26 00:09:06 +0100 | [diff] [blame] | 34 | #include <asm/cpu_device_id.h> |
Ingo Molnar | df6b35f | 2015-04-24 02:46:00 +0200 | [diff] [blame] | 35 | #include <asm/fpu/api.h> |
Jussi Kivilinna | 70ef260 | 2012-06-18 14:07:50 +0300 | [diff] [blame] | 36 | #include <asm/crypto/aes.h> |
Ard Biesheuvel | 801201a | 2013-09-20 09:55:41 +0200 | [diff] [blame] | 37 | #include <crypto/ablk_helper.h> |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 38 | #include <crypto/scatterwalk.h> |
| 39 | #include <crypto/internal/aead.h> |
| 40 | #include <linux/workqueue.h> |
| 41 | #include <linux/spinlock.h> |
Jussi Kivilinna | c456a9c | 2013-04-08 21:51:16 +0300 | [diff] [blame] | 42 | #ifdef CONFIG_X86_64 |
| 43 | #include <asm/crypto/glue_helper.h> |
| 44 | #endif |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 45 | |
Timothy McCaffrey | e31ac32 | 2015-01-13 13:16:43 -0500 | [diff] [blame] | 46 | |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 47 | #define AESNI_ALIGN 16 |
| 48 | #define AES_BLOCK_MASK (~(AES_BLOCK_SIZE - 1)) |
| 49 | #define RFC4106_HASH_SUBKEY_SIZE 16 |
| 50 | |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 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 { |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 56 | u8 hash_subkey[16] __attribute__ ((__aligned__(AESNI_ALIGN))); |
| 57 | struct crypto_aes_ctx aes_key_expanded |
| 58 | __attribute__ ((__aligned__(AESNI_ALIGN))); |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 59 | u8 nonce[4]; |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 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 | |
Jussi Kivilinna | 023af60 | 2012-07-22 18:18:37 +0300 | [diff] [blame] | 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 | |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 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); |
Randy Dunlap | 9bed4ac | 2011-05-18 09:03:34 +1000 | [diff] [blame] | 97 | |
| 98 | int crypto_fpu_init(void); |
| 99 | void crypto_fpu_exit(void); |
| 100 | |
Tim Chen | d764593 | 2013-12-11 14:28:41 -0800 | [diff] [blame] | 101 | #define AVX_GEN2_OPTSIZE 640 |
| 102 | #define AVX_GEN4_OPTSIZE 4096 |
| 103 | |
Mathias Krause | 0d258ef | 2010-11-27 16:34:46 +0800 | [diff] [blame] | 104 | #ifdef CONFIG_X86_64 |
chandramouli narayanan | 22cddcc | 2014-06-10 09:22:47 -0700 | [diff] [blame] | 105 | |
| 106 | static void (*aesni_ctr_enc_tfm)(struct crypto_aes_ctx *ctx, u8 *out, |
| 107 | const u8 *in, unsigned int len, u8 *iv); |
Huang Ying | 12387a4 | 2010-03-10 18:28:55 +0800 | [diff] [blame] | 108 | asmlinkage void aesni_ctr_enc(struct crypto_aes_ctx *ctx, u8 *out, |
| 109 | const u8 *in, unsigned int len, u8 *iv); |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 110 | |
Jussi Kivilinna | c456a9c | 2013-04-08 21:51:16 +0300 | [diff] [blame] | 111 | asmlinkage void aesni_xts_crypt8(struct crypto_aes_ctx *ctx, u8 *out, |
| 112 | const u8 *in, bool enc, u8 *iv); |
| 113 | |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 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 | |
Tim Chen | d764593 | 2013-12-11 14:28:41 -0800 | [diff] [blame] | 156 | |
| 157 | #ifdef CONFIG_AS_AVX |
chandramouli narayanan | 22cddcc | 2014-06-10 09:22:47 -0700 | [diff] [blame] | 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); |
Tim Chen | d764593 | 2013-12-11 14:28:41 -0800 | [diff] [blame] | 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 | { |
Timothy McCaffrey | e31ac32 | 2015-01-13 13:16:43 -0500 | [diff] [blame] | 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)){ |
Tim Chen | d764593 | 2013-12-11 14:28:41 -0800 | [diff] [blame] | 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 | { |
Timothy McCaffrey | e31ac32 | 2015-01-13 13:16:43 -0500 | [diff] [blame] | 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)) { |
Tim Chen | d764593 | 2013-12-11 14:28:41 -0800 | [diff] [blame] | 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 | { |
Timothy McCaffrey | e31ac32 | 2015-01-13 13:16:43 -0500 | [diff] [blame] | 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)) { |
Tim Chen | d764593 | 2013-12-11 14:28:41 -0800 | [diff] [blame] | 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 | { |
Timothy McCaffrey | e31ac32 | 2015-01-13 13:16:43 -0500 | [diff] [blame] | 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)) { |
Tim Chen | d764593 | 2013-12-11 14:28:41 -0800 | [diff] [blame] | 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 | |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 283 | static inline struct |
| 284 | aesni_rfc4106_gcm_ctx *aesni_rfc4106_gcm_ctx_get(struct crypto_aead *tfm) |
| 285 | { |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 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); |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 291 | } |
Mathias Krause | 559ad0f | 2010-11-29 08:35:39 +0800 | [diff] [blame] | 292 | #endif |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 293 | |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 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 | |
Huang Ying | 13b79b97 | 2009-10-20 16:20:47 +0900 | [diff] [blame] | 317 | if (!irq_fpu_usable()) |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 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 | |
Huang Ying | 13b79b97 | 2009-10-20 16:20:47 +0900 | [diff] [blame] | 338 | if (!irq_fpu_usable()) |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 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 | |
Huang Ying | 13b79b97 | 2009-10-20 16:20:47 +0900 | [diff] [blame] | 351 | if (!irq_fpu_usable()) |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 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 | |
Huang Ying | 2cf4ac8 | 2009-03-29 15:41:20 +0800 | [diff] [blame] | 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 | |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 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); |
Huang Ying | 9251b64 | 2009-06-18 19:41:27 +0800 | [diff] [blame] | 384 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 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); |
Huang Ying | 9251b64 | 2009-06-18 19:41:27 +0800 | [diff] [blame] | 408 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 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 | |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 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); |
Huang Ying | 9251b64 | 2009-06-18 19:41:27 +0800 | [diff] [blame] | 432 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 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); |
Huang Ying | 9251b64 | 2009-06-18 19:41:27 +0800 | [diff] [blame] | 456 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 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 | |
Mathias Krause | 0d258ef | 2010-11-27 16:34:46 +0800 | [diff] [blame] | 470 | #ifdef CONFIG_X86_64 |
Huang Ying | 12387a4 | 2010-03-10 18:28:55 +0800 | [diff] [blame] | 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 | |
Mathias Krause | 5cfed7b | 2014-09-28 22:24:01 +0200 | [diff] [blame] | 486 | #ifdef CONFIG_AS_AVX |
chandramouli narayanan | 22cddcc | 2014-06-10 09:22:47 -0700 | [diff] [blame] | 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 | |
Huang Ying | 12387a4 | 2010-03-10 18:28:55 +0800 | [diff] [blame] | 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) { |
chandramouli narayanan | 22cddcc | 2014-06-10 09:22:47 -0700 | [diff] [blame] | 519 | aesni_ctr_enc_tfm(ctx, walk.dst.virt.addr, walk.src.virt.addr, |
Timothy McCaffrey | e31ac32 | 2015-01-13 13:16:43 -0500 | [diff] [blame] | 520 | nbytes & AES_BLOCK_MASK, walk.iv); |
Huang Ying | 12387a4 | 2010-03-10 18:28:55 +0800 | [diff] [blame] | 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 | } |
Mathias Krause | 0d258ef | 2010-11-27 16:34:46 +0800 | [diff] [blame] | 532 | #endif |
Huang Ying | 12387a4 | 2010-03-10 18:28:55 +0800 | [diff] [blame] | 533 | |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 534 | static int ablk_ecb_init(struct crypto_tfm *tfm) |
| 535 | { |
Jussi Kivilinna | ef45b83 | 2012-05-11 16:00:54 +0300 | [diff] [blame] | 536 | return ablk_init_common(tfm, "__driver-ecb-aes-aesni"); |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 537 | } |
| 538 | |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 539 | static int ablk_cbc_init(struct crypto_tfm *tfm) |
| 540 | { |
Jussi Kivilinna | ef45b83 | 2012-05-11 16:00:54 +0300 | [diff] [blame] | 541 | return ablk_init_common(tfm, "__driver-cbc-aes-aesni"); |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 542 | } |
| 543 | |
Mathias Krause | 0d258ef | 2010-11-27 16:34:46 +0800 | [diff] [blame] | 544 | #ifdef CONFIG_X86_64 |
Huang Ying | 2cf4ac8 | 2009-03-29 15:41:20 +0800 | [diff] [blame] | 545 | static int ablk_ctr_init(struct crypto_tfm *tfm) |
| 546 | { |
Jussi Kivilinna | ef45b83 | 2012-05-11 16:00:54 +0300 | [diff] [blame] | 547 | return ablk_init_common(tfm, "__driver-ctr-aes-aesni"); |
Huang Ying | 2cf4ac8 | 2009-03-29 15:41:20 +0800 | [diff] [blame] | 548 | } |
| 549 | |
Mathias Krause | 0d258ef | 2010-11-27 16:34:46 +0800 | [diff] [blame] | 550 | #endif |
Huang Ying | 2cf4ac8 | 2009-03-29 15:41:20 +0800 | [diff] [blame] | 551 | |
Valentin Rothberg | 304576a | 2014-10-21 11:35:32 +0200 | [diff] [blame] | 552 | #if IS_ENABLED(CONFIG_CRYPTO_PCBC) |
Huang Ying | 2cf4ac8 | 2009-03-29 15:41:20 +0800 | [diff] [blame] | 553 | static int ablk_pcbc_init(struct crypto_tfm *tfm) |
| 554 | { |
Jussi Kivilinna | ef45b83 | 2012-05-11 16:00:54 +0300 | [diff] [blame] | 555 | return ablk_init_common(tfm, "fpu(pcbc(__driver-aes-aesni))"); |
Huang Ying | 2cf4ac8 | 2009-03-29 15:41:20 +0800 | [diff] [blame] | 556 | } |
Huang Ying | 2cf4ac8 | 2009-03-29 15:41:20 +0800 | [diff] [blame] | 557 | #endif |
| 558 | |
Jussi Kivilinna | 023af60 | 2012-07-22 18:18:37 +0300 | [diff] [blame] | 559 | static void lrw_xts_encrypt_callback(void *ctx, u8 *blks, unsigned int nbytes) |
Huang Ying | 2cf4ac8 | 2009-03-29 15:41:20 +0800 | [diff] [blame] | 560 | { |
Jussi Kivilinna | 023af60 | 2012-07-22 18:18:37 +0300 | [diff] [blame] | 561 | aesni_ecb_enc(ctx, blks, blks, nbytes); |
Huang Ying | 2cf4ac8 | 2009-03-29 15:41:20 +0800 | [diff] [blame] | 562 | } |
Jussi Kivilinna | 023af60 | 2012-07-22 18:18:37 +0300 | [diff] [blame] | 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); |
Jussi Kivilinna | 023af60 | 2012-07-22 18:18:37 +0300 | [diff] [blame] | 642 | int err; |
| 643 | |
Stephan Mueller | 28856a9 | 2016-02-09 15:37:47 +0100 | [diff] [blame] | 644 | err = xts_check_key(tfm, key, keylen); |
| 645 | if (err) |
| 646 | return err; |
Jussi Kivilinna | 023af60 | 2012-07-22 18:18:37 +0300 | [diff] [blame] | 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 | |
Jussi Kivilinna | 32bec97 | 2012-10-18 23:24:57 +0300 | [diff] [blame] | 659 | static void aesni_xts_tweak(void *ctx, u8 *out, const u8 *in) |
| 660 | { |
| 661 | aesni_enc(ctx, out, in); |
| 662 | } |
| 663 | |
Jussi Kivilinna | c456a9c | 2013-04-08 21:51:16 +0300 | [diff] [blame] | 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 | |
Jussi Kivilinna | 023af60 | 2012-07-22 18:18:37 +0300 | [diff] [blame] | 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), |
Jussi Kivilinna | 32bec97 | 2012-10-18 23:24:57 +0300 | [diff] [blame] | 746 | .tweak_fn = aesni_xts_tweak, |
Jussi Kivilinna | 023af60 | 2012-07-22 18:18:37 +0300 | [diff] [blame] | 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), |
Jussi Kivilinna | 32bec97 | 2012-10-18 23:24:57 +0300 | [diff] [blame] | 771 | .tweak_fn = aesni_xts_tweak, |
Jussi Kivilinna | 023af60 | 2012-07-22 18:18:37 +0300 | [diff] [blame] | 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; |
| 784 | } |
Huang Ying | 2cf4ac8 | 2009-03-29 15:41:20 +0800 | [diff] [blame] | 785 | |
Jussi Kivilinna | c456a9c | 2013-04-08 21:51:16 +0300 | [diff] [blame] | 786 | #endif |
| 787 | |
Mathias Krause | 559ad0f | 2010-11-29 08:35:39 +0800 | [diff] [blame] | 788 | #ifdef CONFIG_X86_64 |
Herbert Xu | af05b300 | 2015-05-28 22:08:03 +0800 | [diff] [blame] | 789 | static int rfc4106_init(struct crypto_aead *aead) |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 790 | { |
| 791 | struct cryptd_aead *cryptd_tfm; |
Herbert Xu | af05b300 | 2015-05-28 22:08:03 +0800 | [diff] [blame] | 792 | struct cryptd_aead **ctx = crypto_aead_ctx(aead); |
| 793 | |
Stephan Mueller | eabdc32 | 2015-03-30 21:58:17 +0200 | [diff] [blame] | 794 | cryptd_tfm = cryptd_alloc_aead("__driver-gcm-aes-aesni", |
| 795 | CRYPTO_ALG_INTERNAL, |
| 796 | CRYPTO_ALG_INTERNAL); |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 797 | if (IS_ERR(cryptd_tfm)) |
| 798 | return PTR_ERR(cryptd_tfm); |
Tadeusz Struk | 60af520 | 2011-03-13 16:56:17 +0800 | [diff] [blame] | 799 | |
Herbert Xu | af05b300 | 2015-05-28 22:08:03 +0800 | [diff] [blame] | 800 | *ctx = cryptd_tfm; |
Herbert Xu | e9b8d2c | 2015-07-09 07:17:28 +0800 | [diff] [blame] | 801 | crypto_aead_set_reqsize(aead, crypto_aead_reqsize(&cryptd_tfm->base)); |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 802 | return 0; |
| 803 | } |
| 804 | |
Herbert Xu | af05b300 | 2015-05-28 22:08:03 +0800 | [diff] [blame] | 805 | static void rfc4106_exit(struct crypto_aead *aead) |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 806 | { |
Herbert Xu | af05b300 | 2015-05-28 22:08:03 +0800 | [diff] [blame] | 807 | struct cryptd_aead **ctx = crypto_aead_ctx(aead); |
| 808 | |
| 809 | cryptd_free_aead(*ctx); |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 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 | |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 835 | ret = crypto_ablkcipher_setkey(ctr_tfm, key, key_len); |
Jesper Juhl | 7efd95f6 | 2011-01-23 18:56:36 +1100 | [diff] [blame] | 836 | if (ret) |
Jesper Juhl | 7efd95f6 | 2011-01-23 18:56:36 +1100 | [diff] [blame] | 837 | goto out_free_ablkcipher; |
Jesper Juhl | fc9044e2 | 2011-02-16 13:04:09 +1100 | [diff] [blame] | 838 | |
| 839 | ret = -ENOMEM; |
| 840 | req = ablkcipher_request_alloc(ctr_tfm, GFP_KERNEL); |
| 841 | if (!req) |
| 842 | goto out_free_ablkcipher; |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 843 | |
| 844 | req_data = kmalloc(sizeof(*req_data), GFP_KERNEL); |
Jesper Juhl | fc9044e2 | 2011-02-16 13:04:09 +1100 | [diff] [blame] | 845 | if (!req_data) |
Jesper Juhl | 7efd95f6 | 2011-01-23 18:56:36 +1100 | [diff] [blame] | 846 | goto out_free_request; |
Jesper Juhl | fc9044e2 | 2011-02-16 13:04:09 +1100 | [diff] [blame] | 847 | |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 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 | } |
Jesper Juhl | fc9044e2 | 2011-02-16 13:04:09 +1100 | [diff] [blame] | 872 | kfree(req_data); |
Jesper Juhl | 7efd95f6 | 2011-01-23 18:56:36 +1100 | [diff] [blame] | 873 | out_free_request: |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 874 | ablkcipher_request_free(req); |
Jesper Juhl | 7efd95f6 | 2011-01-23 18:56:36 +1100 | [diff] [blame] | 875 | out_free_ablkcipher: |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 876 | crypto_free_ablkcipher(ctr_tfm); |
| 877 | return ret; |
| 878 | } |
| 879 | |
Tadeusz Struk | 81e397d | 2015-02-06 10:25:20 -0800 | [diff] [blame] | 880 | static int common_rfc4106_set_key(struct crypto_aead *aead, const u8 *key, |
| 881 | unsigned int key_len) |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 882 | { |
Tadeusz Struk | 81e397d | 2015-02-06 10:25:20 -0800 | [diff] [blame] | 883 | struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(aead); |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 884 | |
| 885 | if (key_len < 4) { |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 886 | crypto_aead_set_flags(aead, CRYPTO_TFM_RES_BAD_KEY_LEN); |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 887 | return -EINVAL; |
| 888 | } |
| 889 | /*Account for 4 byte nonce at the end.*/ |
| 890 | key_len -= 4; |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 891 | |
| 892 | memcpy(ctx->nonce, key + key_len, sizeof(ctx->nonce)); |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 893 | |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 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); |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 897 | } |
| 898 | |
Tadeusz Struk | 81e397d | 2015-02-06 10:25:20 -0800 | [diff] [blame] | 899 | static int rfc4106_set_key(struct crypto_aead *parent, const u8 *key, |
| 900 | unsigned int key_len) |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 901 | { |
Herbert Xu | af05b300 | 2015-05-28 22:08:03 +0800 | [diff] [blame] | 902 | struct cryptd_aead **ctx = crypto_aead_ctx(parent); |
| 903 | struct cryptd_aead *cryptd_tfm = *ctx; |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 904 | |
Herbert Xu | af05b300 | 2015-05-28 22:08:03 +0800 | [diff] [blame] | 905 | return crypto_aead_setkey(&cryptd_tfm->base, key, key_len); |
Tadeusz Struk | 81e397d | 2015-02-06 10:25:20 -0800 | [diff] [blame] | 906 | } |
| 907 | |
| 908 | static int common_rfc4106_set_authsize(struct crypto_aead *aead, |
| 909 | unsigned int authsize) |
| 910 | { |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 911 | switch (authsize) { |
| 912 | case 8: |
| 913 | case 12: |
| 914 | case 16: |
| 915 | break; |
| 916 | default: |
| 917 | return -EINVAL; |
| 918 | } |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 919 | |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 920 | return 0; |
| 921 | } |
| 922 | |
Tadeusz Struk | 81e397d | 2015-02-06 10:25:20 -0800 | [diff] [blame] | 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) |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 927 | { |
Herbert Xu | af05b300 | 2015-05-28 22:08:03 +0800 | [diff] [blame] | 928 | struct cryptd_aead **ctx = crypto_aead_ctx(parent); |
| 929 | struct cryptd_aead *cryptd_tfm = *ctx; |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 930 | |
Herbert Xu | af05b300 | 2015-05-28 22:08:03 +0800 | [diff] [blame] | 931 | return crypto_aead_setauthsize(&cryptd_tfm->base, authsize); |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 932 | } |
| 933 | |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 934 | static int helper_rfc4106_encrypt(struct aead_request *req) |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 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); |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 943 | u8 iv[16] __attribute__ ((__aligned__(AESNI_ALIGN))); |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 944 | struct scatter_walk src_sg_walk; |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 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 */ |
Herbert Xu | e9b8d2c | 2015-07-09 07:17:28 +0800 | [diff] [blame] | 950 | /* to 16 or 20 bytes */ |
| 951 | if (unlikely(req->assoclen != 16 && req->assoclen != 20)) |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 952 | return -EINVAL; |
Timothy McCaffrey | e31ac32 | 2015-01-13 13:16:43 -0500 | [diff] [blame] | 953 | |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 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 | |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 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) { |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 965 | one_entry_in_sg = 1; |
| 966 | scatterwalk_start(&src_sg_walk, req->src); |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 967 | assoc = scatterwalk_map(&src_sg_walk); |
| 968 | src = assoc + req->assoclen; |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 969 | dst = src; |
| 970 | if (unlikely(req->src != req->dst)) { |
| 971 | scatterwalk_start(&dst_sg_walk, req->dst); |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 972 | dst = scatterwalk_map(&dst_sg_walk) + req->assoclen; |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 973 | } |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 974 | } else { |
| 975 | /* Allocate memory for src, dst, assoc */ |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 976 | assoc = kmalloc(req->cryptlen + auth_tag_len + req->assoclen, |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 977 | GFP_ATOMIC); |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 978 | if (unlikely(!assoc)) |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 979 | return -ENOMEM; |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 980 | scatterwalk_map_and_copy(assoc, req->src, 0, |
| 981 | req->assoclen + req->cryptlen, 0); |
| 982 | src = assoc + req->assoclen; |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 983 | dst = src; |
| 984 | } |
| 985 | |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 986 | kernel_fpu_begin(); |
Herbert Xu | e9b8d2c | 2015-07-09 07:17:28 +0800 | [diff] [blame] | 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); |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 990 | kernel_fpu_end(); |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 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)) { |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 996 | scatterwalk_unmap(dst - req->assoclen); |
| 997 | scatterwalk_advance(&dst_sg_walk, req->dst->length); |
| 998 | scatterwalk_done(&dst_sg_walk, 1, 0); |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 999 | } |
Cong Wang | 8fd75e1 | 2011-11-25 23:14:17 +0800 | [diff] [blame] | 1000 | scatterwalk_unmap(assoc); |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 1001 | scatterwalk_advance(&src_sg_walk, req->src->length); |
| 1002 | scatterwalk_done(&src_sg_walk, req->src == req->dst, 0); |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 1003 | } else { |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 1004 | scatterwalk_map_and_copy(dst, req->dst, req->assoclen, |
| 1005 | req->cryptlen + auth_tag_len, 1); |
| 1006 | kfree(assoc); |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 1007 | } |
| 1008 | return 0; |
| 1009 | } |
| 1010 | |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 1011 | static int helper_rfc4106_decrypt(struct aead_request *req) |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 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); |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 1022 | u8 iv[16] __attribute__ ((__aligned__(AESNI_ALIGN))); |
| 1023 | u8 authTag[16]; |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 1024 | struct scatter_walk src_sg_walk; |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 1025 | struct scatter_walk dst_sg_walk; |
| 1026 | unsigned int i; |
| 1027 | |
Herbert Xu | e9b8d2c | 2015-07-09 07:17:28 +0800 | [diff] [blame] | 1028 | if (unlikely(req->assoclen != 16 && req->assoclen != 20)) |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 1029 | return -EINVAL; |
Timothy McCaffrey | e31ac32 | 2015-01-13 13:16:43 -0500 | [diff] [blame] | 1030 | |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 1031 | /* Assuming we are supporting rfc4106 64-bit extended */ |
| 1032 | /* sequence numbers We need to have the AAD length */ |
Herbert Xu | e9b8d2c | 2015-07-09 07:17:28 +0800 | [diff] [blame] | 1033 | /* equal to 16 or 20 bytes */ |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 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 | |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 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) { |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 1047 | one_entry_in_sg = 1; |
| 1048 | scatterwalk_start(&src_sg_walk, req->src); |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 1049 | assoc = scatterwalk_map(&src_sg_walk); |
| 1050 | src = assoc + req->assoclen; |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 1051 | dst = src; |
| 1052 | if (unlikely(req->src != req->dst)) { |
| 1053 | scatterwalk_start(&dst_sg_walk, req->dst); |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 1054 | dst = scatterwalk_map(&dst_sg_walk) + req->assoclen; |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 1055 | } |
| 1056 | |
| 1057 | } else { |
| 1058 | /* Allocate memory for src, dst, assoc */ |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 1059 | assoc = kmalloc(req->cryptlen + req->assoclen, GFP_ATOMIC); |
| 1060 | if (!assoc) |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 1061 | return -ENOMEM; |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 1062 | scatterwalk_map_and_copy(assoc, req->src, 0, |
| 1063 | req->assoclen + req->cryptlen, 0); |
| 1064 | src = assoc + req->assoclen; |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 1065 | dst = src; |
| 1066 | } |
| 1067 | |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 1068 | kernel_fpu_begin(); |
Tim Chen | d764593 | 2013-12-11 14:28:41 -0800 | [diff] [blame] | 1069 | aesni_gcm_dec_tfm(aes_ctx, dst, src, tempCipherLen, iv, |
Herbert Xu | e9b8d2c | 2015-07-09 07:17:28 +0800 | [diff] [blame] | 1070 | ctx->hash_subkey, assoc, req->assoclen - 8, |
| 1071 | authTag, auth_tag_len); |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 1072 | kernel_fpu_end(); |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 1073 | |
| 1074 | /* Compare generated tag with passed in tag. */ |
Daniel Borkmann | fed2861 | 2013-12-11 11:28:59 +0100 | [diff] [blame] | 1075 | retval = crypto_memneq(src + tempCipherLen, authTag, auth_tag_len) ? |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 1076 | -EBADMSG : 0; |
| 1077 | |
| 1078 | if (one_entry_in_sg) { |
| 1079 | if (unlikely(req->src != req->dst)) { |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 1080 | scatterwalk_unmap(dst - req->assoclen); |
| 1081 | scatterwalk_advance(&dst_sg_walk, req->dst->length); |
| 1082 | scatterwalk_done(&dst_sg_walk, 1, 0); |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 1083 | } |
Cong Wang | 8fd75e1 | 2011-11-25 23:14:17 +0800 | [diff] [blame] | 1084 | scatterwalk_unmap(assoc); |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 1085 | scatterwalk_advance(&src_sg_walk, req->src->length); |
| 1086 | scatterwalk_done(&src_sg_walk, req->src == req->dst, 0); |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 1087 | } else { |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 1088 | scatterwalk_map_and_copy(dst, req->dst, req->assoclen, |
| 1089 | tempCipherLen, 1); |
| 1090 | kfree(assoc); |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 1091 | } |
| 1092 | return retval; |
| 1093 | } |
Tadeusz Struk | 81e397d | 2015-02-06 10:25:20 -0800 | [diff] [blame] | 1094 | |
| 1095 | static int rfc4106_encrypt(struct aead_request *req) |
| 1096 | { |
Tadeusz Struk | 81e397d | 2015-02-06 10:25:20 -0800 | [diff] [blame] | 1097 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); |
Herbert Xu | af05b300 | 2015-05-28 22:08:03 +0800 | [diff] [blame] | 1098 | struct cryptd_aead **ctx = crypto_aead_ctx(tfm); |
| 1099 | struct cryptd_aead *cryptd_tfm = *ctx; |
Tadeusz Struk | 81e397d | 2015-02-06 10:25:20 -0800 | [diff] [blame] | 1100 | |
Herbert Xu | e9b8d2c | 2015-07-09 07:17:28 +0800 | [diff] [blame] | 1101 | aead_request_set_tfm(req, irq_fpu_usable() ? |
| 1102 | cryptd_aead_child(cryptd_tfm) : |
| 1103 | &cryptd_tfm->base); |
Tadeusz Struk | 81e397d | 2015-02-06 10:25:20 -0800 | [diff] [blame] | 1104 | |
Herbert Xu | e9b8d2c | 2015-07-09 07:17:28 +0800 | [diff] [blame] | 1105 | return crypto_aead_encrypt(req); |
Tadeusz Struk | 81e397d | 2015-02-06 10:25:20 -0800 | [diff] [blame] | 1106 | } |
| 1107 | |
| 1108 | static int rfc4106_decrypt(struct aead_request *req) |
| 1109 | { |
Tadeusz Struk | 81e397d | 2015-02-06 10:25:20 -0800 | [diff] [blame] | 1110 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); |
Herbert Xu | af05b300 | 2015-05-28 22:08:03 +0800 | [diff] [blame] | 1111 | struct cryptd_aead **ctx = crypto_aead_ctx(tfm); |
| 1112 | struct cryptd_aead *cryptd_tfm = *ctx; |
Tadeusz Struk | 81e397d | 2015-02-06 10:25:20 -0800 | [diff] [blame] | 1113 | |
Herbert Xu | e9b8d2c | 2015-07-09 07:17:28 +0800 | [diff] [blame] | 1114 | aead_request_set_tfm(req, irq_fpu_usable() ? |
| 1115 | cryptd_aead_child(cryptd_tfm) : |
| 1116 | &cryptd_tfm->base); |
Tadeusz Struk | 81e397d | 2015-02-06 10:25:20 -0800 | [diff] [blame] | 1117 | |
Herbert Xu | e9b8d2c | 2015-07-09 07:17:28 +0800 | [diff] [blame] | 1118 | return crypto_aead_decrypt(req); |
Tadeusz Struk | 81e397d | 2015-02-06 10:25:20 -0800 | [diff] [blame] | 1119 | } |
Jussi Kivilinna | fa46ccb | 2012-05-11 16:00:48 +0300 | [diff] [blame] | 1120 | #endif |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 1121 | |
Jussi Kivilinna | fa46ccb | 2012-05-11 16:00:48 +0300 | [diff] [blame] | 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, |
Stephan Mueller | eabdc32 | 2015-03-30 21:58:17 +0200 | [diff] [blame] | 1145 | .cra_flags = CRYPTO_ALG_TYPE_CIPHER | CRYPTO_ALG_INTERNAL, |
Jussi Kivilinna | fa46ccb | 2012-05-11 16:00:48 +0300 | [diff] [blame] | 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, |
Stephan Mueller | eabdc32 | 2015-03-30 21:58:17 +0200 | [diff] [blame] | 1164 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
| 1165 | CRYPTO_ALG_INTERNAL, |
Jussi Kivilinna | fa46ccb | 2012-05-11 16:00:48 +0300 | [diff] [blame] | 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, |
Stephan Mueller | eabdc32 | 2015-03-30 21:58:17 +0200 | [diff] [blame] | 1185 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
| 1186 | CRYPTO_ALG_INTERNAL, |
Jussi Kivilinna | fa46ccb | 2012-05-11 16:00:48 +0300 | [diff] [blame] | 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, |
Jussi Kivilinna | a9629d7 | 2012-06-18 14:07:08 +0300 | [diff] [blame] | 1208 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
Jussi Kivilinna | fa46ccb | 2012-05-11 16:00:48 +0300 | [diff] [blame] | 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, |
Jussi Kivilinna | a9629d7 | 2012-06-18 14:07:08 +0300 | [diff] [blame] | 1229 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
Jussi Kivilinna | fa46ccb | 2012-05-11 16:00:48 +0300 | [diff] [blame] | 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, |
Stephan Mueller | eabdc32 | 2015-03-30 21:58:17 +0200 | [diff] [blame] | 1250 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
| 1251 | CRYPTO_ALG_INTERNAL, |
Jussi Kivilinna | fa46ccb | 2012-05-11 16:00:48 +0300 | [diff] [blame] | 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, |
Jussi Kivilinna | a9629d7 | 2012-06-18 14:07:08 +0300 | [diff] [blame] | 1274 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
Jussi Kivilinna | fa46ccb | 2012-05-11 16:00:48 +0300 | [diff] [blame] | 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 | }, |
Jussi Kivilinna | fa46ccb | 2012-05-11 16:00:48 +0300 | [diff] [blame] | 1291 | #endif |
Valentin Rothberg | 304576a | 2014-10-21 11:35:32 +0200 | [diff] [blame] | 1292 | #if IS_ENABLED(CONFIG_CRYPTO_PCBC) |
Jussi Kivilinna | fa46ccb | 2012-05-11 16:00:48 +0300 | [diff] [blame] | 1293 | }, { |
| 1294 | .cra_name = "pcbc(aes)", |
| 1295 | .cra_driver_name = "pcbc-aes-aesni", |
| 1296 | .cra_priority = 400, |
| 1297 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, |
| 1298 | .cra_blocksize = AES_BLOCK_SIZE, |
Jussi Kivilinna | a9629d7 | 2012-06-18 14:07:08 +0300 | [diff] [blame] | 1299 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
Jussi Kivilinna | fa46ccb | 2012-05-11 16:00:48 +0300 | [diff] [blame] | 1300 | .cra_alignmask = 0, |
| 1301 | .cra_type = &crypto_ablkcipher_type, |
| 1302 | .cra_module = THIS_MODULE, |
| 1303 | .cra_init = ablk_pcbc_init, |
| 1304 | .cra_exit = ablk_exit, |
| 1305 | .cra_u = { |
| 1306 | .ablkcipher = { |
| 1307 | .min_keysize = AES_MIN_KEY_SIZE, |
| 1308 | .max_keysize = AES_MAX_KEY_SIZE, |
| 1309 | .ivsize = AES_BLOCK_SIZE, |
| 1310 | .setkey = ablk_set_key, |
| 1311 | .encrypt = ablk_encrypt, |
| 1312 | .decrypt = ablk_decrypt, |
| 1313 | }, |
| 1314 | }, |
| 1315 | #endif |
Jussi Kivilinna | 023af60 | 2012-07-22 18:18:37 +0300 | [diff] [blame] | 1316 | }, { |
| 1317 | .cra_name = "__lrw-aes-aesni", |
| 1318 | .cra_driver_name = "__driver-lrw-aes-aesni", |
| 1319 | .cra_priority = 0, |
Stephan Mueller | eabdc32 | 2015-03-30 21:58:17 +0200 | [diff] [blame] | 1320 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
| 1321 | CRYPTO_ALG_INTERNAL, |
Jussi Kivilinna | 023af60 | 2012-07-22 18:18:37 +0300 | [diff] [blame] | 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, |
Stephan Mueller | eabdc32 | 2015-03-30 21:58:17 +0200 | [diff] [blame] | 1342 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
| 1343 | CRYPTO_ALG_INTERNAL, |
Jussi Kivilinna | 023af60 | 2012-07-22 18:18:37 +0300 | [diff] [blame] | 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", |
| 1362 | .cra_priority = 400, |
| 1363 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, |
| 1364 | .cra_blocksize = AES_BLOCK_SIZE, |
| 1365 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
| 1366 | .cra_alignmask = 0, |
| 1367 | .cra_type = &crypto_ablkcipher_type, |
| 1368 | .cra_module = THIS_MODULE, |
| 1369 | .cra_init = ablk_init, |
| 1370 | .cra_exit = ablk_exit, |
| 1371 | .cra_u = { |
| 1372 | .ablkcipher = { |
| 1373 | .min_keysize = AES_MIN_KEY_SIZE + AES_BLOCK_SIZE, |
| 1374 | .max_keysize = AES_MAX_KEY_SIZE + AES_BLOCK_SIZE, |
| 1375 | .ivsize = AES_BLOCK_SIZE, |
| 1376 | .setkey = ablk_set_key, |
| 1377 | .encrypt = ablk_encrypt, |
| 1378 | .decrypt = ablk_decrypt, |
| 1379 | }, |
| 1380 | }, |
Jussi Kivilinna | fa46ccb | 2012-05-11 16:00:48 +0300 | [diff] [blame] | 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, |
Jussi Kivilinna | a9629d7 | 2012-06-18 14:07:08 +0300 | [diff] [blame] | 1387 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
Jussi Kivilinna | fa46ccb | 2012-05-11 16:00:48 +0300 | [diff] [blame] | 1388 | .cra_alignmask = 0, |
| 1389 | .cra_type = &crypto_ablkcipher_type, |
| 1390 | .cra_module = THIS_MODULE, |
Jussi Kivilinna | 023af60 | 2012-07-22 18:18:37 +0300 | [diff] [blame] | 1391 | .cra_init = ablk_init, |
Jussi Kivilinna | fa46ccb | 2012-05-11 16:00:48 +0300 | [diff] [blame] | 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 | }, |
Jussi Kivilinna | fa46ccb | 2012-05-11 16:00:48 +0300 | [diff] [blame] | 1403 | } }; |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 1404 | |
Herbert Xu | af05b300 | 2015-05-28 22:08:03 +0800 | [diff] [blame] | 1405 | #ifdef CONFIG_X86_64 |
| 1406 | static struct aead_alg aesni_aead_algs[] = { { |
Herbert Xu | b7c89d9 | 2015-06-01 15:53:06 +0800 | [diff] [blame] | 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 | }, { |
Herbert Xu | af05b300 | 2015-05-28 22:08:03 +0800 | [diff] [blame] | 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, |
Herbert Xu | 5e4b8c1 | 2015-08-13 17:29:06 +0800 | [diff] [blame] | 1435 | .cra_flags = CRYPTO_ALG_ASYNC, |
Herbert Xu | af05b300 | 2015-05-28 22:08:03 +0800 | [diff] [blame] | 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 | |
Andi Kleen | 3bd391f | 2012-01-26 00:09:06 +0100 | [diff] [blame] | 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 | |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 1452 | static int __init aesni_init(void) |
| 1453 | { |
Jussi Kivilinna | 7af6c24 | 2012-07-11 14:20:51 +0300 | [diff] [blame] | 1454 | int err; |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 1455 | |
Andi Kleen | 3bd391f | 2012-01-26 00:09:06 +0100 | [diff] [blame] | 1456 | if (!x86_match_cpu(aesni_cpu_id)) |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 1457 | return -ENODEV; |
Andy Shevchenko | 8610d7b | 2013-12-30 15:52:24 +0200 | [diff] [blame] | 1458 | #ifdef CONFIG_X86_64 |
Tim Chen | d764593 | 2013-12-11 14:28:41 -0800 | [diff] [blame] | 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 | } |
chandramouli narayanan | 22cddcc | 2014-06-10 09:22:47 -0700 | [diff] [blame] | 1478 | aesni_ctr_enc_tfm = aesni_ctr_enc; |
Mathias Krause | 5cfed7b | 2014-09-28 22:24:01 +0200 | [diff] [blame] | 1479 | #ifdef CONFIG_AS_AVX |
Borislav Petkov | da154e8 | 2016-04-04 22:24:56 +0200 | [diff] [blame] | 1480 | if (boot_cpu_has(X86_FEATURE_AVX)) { |
chandramouli narayanan | 22cddcc | 2014-06-10 09:22:47 -0700 | [diff] [blame] | 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 |
Andy Shevchenko | 8610d7b | 2013-12-30 15:52:24 +0200 | [diff] [blame] | 1486 | #endif |
Tadeusz Struk | 0bd82f5 | 2010-11-04 15:00:45 -0400 | [diff] [blame] | 1487 | |
Jussi Kivilinna | fa46ccb | 2012-05-11 16:00:48 +0300 | [diff] [blame] | 1488 | err = crypto_fpu_init(); |
| 1489 | if (err) |
| 1490 | return err; |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 1491 | |
Herbert Xu | af05b300 | 2015-05-28 22:08:03 +0800 | [diff] [blame] | 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; |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 1508 | } |
| 1509 | |
| 1510 | static void __exit aesni_exit(void) |
| 1511 | { |
Herbert Xu | af05b300 | 2015-05-28 22:08:03 +0800 | [diff] [blame] | 1512 | crypto_unregister_aeads(aesni_aead_algs, ARRAY_SIZE(aesni_aead_algs)); |
Jussi Kivilinna | fa46ccb | 2012-05-11 16:00:48 +0300 | [diff] [blame] | 1513 | crypto_unregister_algs(aesni_algs, ARRAY_SIZE(aesni_algs)); |
Andy Lutomirski | b23b645 | 2011-05-16 15:12:47 +1000 | [diff] [blame] | 1514 | |
| 1515 | crypto_fpu_exit(); |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 1516 | } |
| 1517 | |
Tadeusz Struk | 0fbafd0 | 2015-06-27 15:56:38 +0900 | [diff] [blame] | 1518 | late_initcall(aesni_init); |
Huang Ying | 54b6a1b | 2009-01-18 16:28:34 +1100 | [diff] [blame] | 1519 | module_exit(aesni_exit); |
| 1520 | |
| 1521 | MODULE_DESCRIPTION("Rijndael (AES) Cipher Algorithm, Intel AES-NI instructions optimized"); |
| 1522 | MODULE_LICENSE("GPL"); |
Kees Cook | 5d26a10 | 2014-11-20 17:05:53 -0800 | [diff] [blame] | 1523 | MODULE_ALIAS_CRYPTO("aes"); |