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crypto: x86/glue_helper - use le128 instead of u128 for CTR mode

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'u128' currently used for CTR mode is on little-endian 'long long' swapped
and would require extra swap operations by SSE/AVX code. Use of le128
instead of u128 allows IV calculations to be done with vector registers
easier.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Jussi Kivilinna
2012-10-20 15:06:36 +03:00
committed by Herbert Xu
parent e080b17a8c
commit 58990986f1
9 changed files with 64 additions and 58 deletions
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28
arch/x86/include/asm/crypto/glue_helper.h
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@@ -13,7 +13,7 @@
typedef void (*common_glue_func_t)(void *ctx, u8 *dst, const u8 *src);
typedef void (*common_glue_cbc_func_t)(void *ctx, u128 *dst, const u128 *src);
typedef void (*common_glue_ctr_func_t)(void *ctx, u128 *dst, const u128 *src,
u128 *iv);
le128 *iv);
#define GLUE_FUNC_CAST(fn) ((common_glue_func_t)(fn))
#define GLUE_CBC_FUNC_CAST(fn) ((common_glue_cbc_func_t)(fn))
@@ -71,23 +71,29 @@ static inline void glue_fpu_end(bool fpu_enabled)
kernel_fpu_end();
}
static inline void u128_to_be128(be128 *dst, const u128 *src)
static inline void le128_to_be128(be128 *dst, const le128 *src)
{
dst->a = cpu_to_be64(src->a);
dst->b = cpu_to_be64(src->b);
dst->a = cpu_to_be64(le64_to_cpu(src->a));
dst->b = cpu_to_be64(le64_to_cpu(src->b));
}
static inline void be128_to_u128(u128 *dst, const be128 *src)
static inline void be128_to_le128(le128 *dst, const be128 *src)
{
dst->a = be64_to_cpu(src->a);
dst->b = be64_to_cpu(src->b);
dst->a = cpu_to_le64(be64_to_cpu(src->a));
dst->b = cpu_to_le64(be64_to_cpu(src->b));
}
static inline void u128_inc(u128 *i)
static inline void le128_inc(le128 *i)
{
i->b++;
if (!i->b)
i->a++;
u64 a = le64_to_cpu(i->a);
u64 b = le64_to_cpu(i->b);
b++;
if (!b)
a++;
i->a = cpu_to_le64(a);
i->b = cpu_to_le64(b);
}
extern int glue_ecb_crypt_128bit(const struct common_glue_ctx *gctx,

4
arch/x86/include/asm/crypto/twofish.h
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@@ -31,9 +31,9 @@ asmlinkage void twofish_dec_blk_3way(struct twofish_ctx *ctx, u8 *dst,
/* helpers from twofish_x86_64-3way module */
extern void twofish_dec_blk_cbc_3way(void *ctx, u128 *dst, const u128 *src);
extern void twofish_enc_blk_ctr(void *ctx, u128 *dst, const u128 *src,
u128 *iv);
le128 *iv);
extern void twofish_enc_blk_ctr_3way(void *ctx, u128 *dst, const u128 *src,
u128 *iv);
le128 *iv);
extern int lrw_twofish_setkey(struct crypto_tfm *tfm, const u8 *key,
unsigned int keylen);