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authorJussi Kivilinna <jussi.kivilinna@mbnet.fi>2012-10-20 15:06:36 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2012-10-24 21:10:54 +0800
commit58990986f1cba40c23c0c10592ace08616de3ffa (patch)
tree84466698a28860d1457c804b857b2e97d1995fcb /arch/x86/include/asm/crypto
parente080b17a8cec92ef42343989ae65c73c25529346 (diff)
downloadlinux-58990986f1cba40c23c0c10592ace08616de3ffa.tar.gz
crypto: x86/glue_helper - use le128 instead of u128 for CTR mode
'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>
Diffstat (limited to 'arch/x86/include/asm/crypto')
-rw-r--r--arch/x86/include/asm/crypto/glue_helper.h28
-rw-r--r--arch/x86/include/asm/crypto/twofish.h4
2 files changed, 19 insertions, 13 deletions
diff --git a/arch/x86/include/asm/crypto/glue_helper.h b/arch/x86/include/asm/crypto/glue_helper.h
index 3e408bddc96..e2d65b061d2 100644
--- a/arch/x86/include/asm/crypto/glue_helper.h
+++ b/arch/x86/include/asm/crypto/glue_helper.h
@@ -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,
diff --git a/arch/x86/include/asm/crypto/twofish.h b/arch/x86/include/asm/crypto/twofish.h
index 9d2c514bd5f..878c51ceebb 100644
--- a/arch/x86/include/asm/crypto/twofish.h
+++ b/arch/x86/include/asm/crypto/twofish.h
@@ -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);