crypto: ghash-clmulni-intel - Use u128 instead of be128 for internal key

The internal key isn't actually in big-endian format so let's switch
to u128 which also happens to allow us to remove a sparse warning.

Based on suggestion by Ard Biesheuvel.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

diff --git a/arch/x86/crypto/ghash-clmulni-intel_asm.S b/arch/x86/crypto/ghash-clmulni-intel_asm.S
index 185fad4..5d1e007 100644 (file)
--- a/arch/x86/crypto/ghash-clmulni-intel_asm.S
+++ b/arch/x86/crypto/ghash-clmulni-intel_asm.S
@@ -92,7 +92,7 @@ __clmul_gf128mul_ble:
        ret
 ENDPROC(__clmul_gf128mul_ble)
 
-/* void clmul_ghash_mul(char *dst, const be128 *shash) */
+/* void clmul_ghash_mul(char *dst, const u128 *shash) */
 ENTRY(clmul_ghash_mul)
        movups (%rdi), DATA
        movups (%rsi), SHASH
@@ -106,7 +106,7 @@ ENDPROC(clmul_ghash_mul)
 
 /*
  * void clmul_ghash_update(char *dst, const char *src, unsigned int srclen,
- *                        const be128 *shash);
+ *                        const u128 *shash);
  */
 ENTRY(clmul_ghash_update)
        cmp $16, %rdx

diff --git a/arch/x86/crypto/ghash-clmulni-intel_glue.c b/arch/x86/crypto/ghash-clmulni-intel_glue.c
index d785cf2..88bb7ba 100644 (file)
--- a/arch/x86/crypto/ghash-clmulni-intel_glue.c
+++ b/arch/x86/crypto/ghash-clmulni-intel_glue.c
@@ -25,17 +25,17 @@
 #define GHASH_BLOCK_SIZE       16
 #define GHASH_DIGEST_SIZE      16
 
-void clmul_ghash_mul(char *dst, const be128 *shash);
+void clmul_ghash_mul(char *dst, const u128 *shash);
 
 void clmul_ghash_update(char *dst, const char *src, unsigned int srclen,
-                       const be128 *shash);
+                       const u128 *shash);
 
 struct ghash_async_ctx {
        struct cryptd_ahash *cryptd_tfm;
 };
 
 struct ghash_ctx {
-       be128 shash;
+       u128 shash;
 };
 
 struct ghash_desc_ctx {
@@ -68,11 +68,11 @@ static int ghash_setkey(struct crypto_shash *tfm,
        a = be64_to_cpu(x->a);
        b = be64_to_cpu(x->b);
 
-       ctx->shash.a = (__be64)((b << 1) | (a >> 63));
-       ctx->shash.b = (__be64)((a << 1) | (b >> 63));
+       ctx->shash.a = (b << 1) | (a >> 63);
+       ctx->shash.b = (a << 1) | (b >> 63);
 
        if (a >> 63)
-               ctx->shash.b ^= cpu_to_be64(0xc2);
+               ctx->shash.b ^= ((u64)0xc2) << 56;
 
        return 0;
 }