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>
diff --git a/arch/x86/crypto/glue_helper.c b/arch/x86/crypto/glue_helper.c
index 30b3927..22ce4f6 100644
--- a/arch/x86/crypto/glue_helper.c
+++ b/arch/x86/crypto/glue_helper.c
@@ -221,16 +221,16 @@
u8 *src = (u8 *)walk->src.virt.addr;
u8 *dst = (u8 *)walk->dst.virt.addr;
unsigned int nbytes = walk->nbytes;
- u128 ctrblk;
+ le128 ctrblk;
u128 tmp;
- be128_to_u128(&ctrblk, (be128 *)walk->iv);
+ be128_to_le128(&ctrblk, (be128 *)walk->iv);
memcpy(&tmp, src, nbytes);
fn_ctr(ctx, &tmp, &tmp, &ctrblk);
memcpy(dst, &tmp, nbytes);
- u128_to_be128((be128 *)walk->iv, &ctrblk);
+ le128_to_be128((be128 *)walk->iv, &ctrblk);
}
EXPORT_SYMBOL_GPL(glue_ctr_crypt_final_128bit);
@@ -243,11 +243,11 @@
unsigned int nbytes = walk->nbytes;
u128 *src = (u128 *)walk->src.virt.addr;
u128 *dst = (u128 *)walk->dst.virt.addr;
- u128 ctrblk;
+ le128 ctrblk;
unsigned int num_blocks, func_bytes;
unsigned int i;
- be128_to_u128(&ctrblk, (be128 *)walk->iv);
+ be128_to_le128(&ctrblk, (be128 *)walk->iv);
/* Process multi-block batch */
for (i = 0; i < gctx->num_funcs; i++) {
@@ -269,7 +269,7 @@
}
done:
- u128_to_be128((be128 *)walk->iv, &ctrblk);
+ le128_to_be128((be128 *)walk->iv, &ctrblk);
return nbytes;
}