07bf44f869
Intel AES-NI AES acceleration instructions touch XMM state, to use that in soft_irq context, general x86 AES implementation is used as fallback. The first parameter is changed from struct crypto_tfm * to struct crypto_aes_ctx * to make it easier to deal with 16 bytes alignment requirement of AES-NI implementation. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/*
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* Glue Code for the asm optimized version of the AES Cipher Algorithm
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*
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*/
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#include <crypto/aes.h>
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asmlinkage void aes_enc_blk(struct crypto_aes_ctx *ctx, u8 *out, const u8 *in);
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asmlinkage void aes_dec_blk(struct crypto_aes_ctx *ctx, u8 *out, const u8 *in);
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void crypto_aes_encrypt_x86(struct crypto_aes_ctx *ctx, u8 *dst, const u8 *src)
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{
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aes_enc_blk(ctx, dst, src);
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}
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EXPORT_SYMBOL_GPL(crypto_aes_encrypt_x86);
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void crypto_aes_decrypt_x86(struct crypto_aes_ctx *ctx, u8 *dst, const u8 *src)
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{
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aes_dec_blk(ctx, dst, src);
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}
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EXPORT_SYMBOL_GPL(crypto_aes_decrypt_x86);
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static void aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
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{
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aes_enc_blk(crypto_tfm_ctx(tfm), dst, src);
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}
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static void aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src)
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{
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aes_dec_blk(crypto_tfm_ctx(tfm), dst, src);
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}
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static struct crypto_alg aes_alg = {
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.cra_name = "aes",
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.cra_driver_name = "aes-asm",
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.cra_priority = 200,
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.cra_flags = CRYPTO_ALG_TYPE_CIPHER,
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.cra_blocksize = AES_BLOCK_SIZE,
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.cra_ctxsize = sizeof(struct crypto_aes_ctx),
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.cra_module = THIS_MODULE,
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.cra_list = LIST_HEAD_INIT(aes_alg.cra_list),
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.cra_u = {
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.cipher = {
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.cia_min_keysize = AES_MIN_KEY_SIZE,
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.cia_max_keysize = AES_MAX_KEY_SIZE,
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.cia_setkey = crypto_aes_set_key,
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.cia_encrypt = aes_encrypt,
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.cia_decrypt = aes_decrypt
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}
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}
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};
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static int __init aes_init(void)
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{
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return crypto_register_alg(&aes_alg);
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}
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static void __exit aes_fini(void)
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{
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crypto_unregister_alg(&aes_alg);
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}
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module_init(aes_init);
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module_exit(aes_fini);
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MODULE_DESCRIPTION("Rijndael (AES) Cipher Algorithm, asm optimized");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("aes");
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MODULE_ALIAS("aes-asm");
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