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crypto: algapi - use separate dst and src operands for __crypto_xor()

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In preparation of introducing crypto_xor_cpy(), which will use separate
operands for input and output, modify the __crypto_xor() implementation,
which it will share with the existing crypto_xor(), which provides the
actual functionality when not using the inline version.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Ard Biesheuvel 2017-07-24 11:28:03 +01:00 • committed by Herbert Xu
parent 9a42e4eed3
commit a7c391f04f
2 changed files with 17 additions and 12 deletions
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4
include/crypto/algapi.h
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@ -192,7 +192,7 @@ static inline unsigned int crypto_queue_len(struct crypto_queue *queue)
}
void crypto_inc(u8 *a, unsigned int size);
void __crypto_xor(u8 *dst, const u8 *src, unsigned int size);
void __crypto_xor(u8 *dst, const u8 *src1, const u8 *src2, unsigned int size);
static inline void crypto_xor(u8 *dst, const u8 *src, unsigned int size)
{
@ -207,7 +207,7 @@ static inline void crypto_xor(u8 *dst, const u8 *src, unsigned int size)
size -= sizeof(unsigned long);
}
} else {
__crypto_xor(dst, src, size);
__crypto_xor(dst, dst, src, size);
}
}