diff options
Diffstat (limited to 'include/crypto/algapi.h')
| -rw-r--r-- | include/crypto/algapi.h | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h index 436c4c2683c7..e3cebf640c00 100644 --- a/include/crypto/algapi.h +++ b/include/crypto/algapi.h @@ -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 +207,26 @@ 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); + } +} + +static inline void crypto_xor_cpy(u8 *dst, const u8 *src1, const u8 *src2, + unsigned int size) +{ + if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && + __builtin_constant_p(size) && + (size % sizeof(unsigned long)) == 0) { + unsigned long *d = (unsigned long *)dst; + unsigned long *s1 = (unsigned long *)src1; + unsigned long *s2 = (unsigned long *)src2; + + while (size > 0) { + *d++ = *s1++ ^ *s2++; + size -= sizeof(unsigned long); + } + } else { + __crypto_xor(dst, src1, src2, size); } } |