[2/3] crypto: x86/ghash - use le128 instead of u128

Commit Message

Eric Biggers Dec. 20, 2022, 5:40 a.m. UTC

From: Eric Biggers <[e-mail]>

The u128 struct type is going away, so make ghash-clmulni-intel use
le128 instead.  Note that the field names a and b swapped, as they were
backwards with u128.  (a is meant to be high-order and b low-order.)

Signed-off-by: Eric Biggers <[e-mail]>
---
 arch/x86/crypto/ghash-clmulni-intel_asm.S  |  4 ++--
 arch/x86/crypto/ghash-clmulni-intel_glue.c | 12 ++++++------
 2 files changed, 8 insertions(+), 8 deletions(-)

Patch

diff --git a/arch/x86/crypto/ghash-clmulni-intel_asm.S b/arch/x86/crypto/ghash-clmulni-intel_asm.S
index 2bf871899920..9dfeb4d31b92 100644
--- a/arch/x86/crypto/ghash-clmulni-intel_asm.S
+++ b/arch/x86/crypto/ghash-clmulni-intel_asm.S
@@ -88,7 +88,7 @@  SYM_FUNC_START_LOCAL(__clmul_gf128mul_ble)
 	RET
 SYM_FUNC_END(__clmul_gf128mul_ble)
 
-/* void clmul_ghash_mul(char *dst, const u128 *shash) */
+/* void clmul_ghash_mul(char *dst, const le128 *shash) */
 SYM_FUNC_START(clmul_ghash_mul)
 	FRAME_BEGIN
 	movups (%rdi), DATA
@@ -104,7 +104,7 @@  SYM_FUNC_END(clmul_ghash_mul)
 
 /*
  * void clmul_ghash_update(char *dst, const char *src, unsigned int srclen,
- *			   const u128 *shash);
+ *			   const le128 *shash);
  */
 SYM_FUNC_START(clmul_ghash_update)
 	FRAME_BEGIN
diff --git a/arch/x86/crypto/ghash-clmulni-intel_glue.c b/arch/x86/crypto/ghash-clmulni-intel_glue.c
index c0ab0ff4af65..9453b094bb3b 100644
--- a/arch/x86/crypto/ghash-clmulni-intel_glue.c
+++ b/arch/x86/crypto/ghash-clmulni-intel_glue.c
@@ -24,17 +24,17 @@ 
 #define GHASH_BLOCK_SIZE	16
 #define GHASH_DIGEST_SIZE	16
 
-void clmul_ghash_mul(char *dst, const u128 *shash);
+void clmul_ghash_mul(char *dst, const le128 *shash);
 
 void clmul_ghash_update(char *dst, const char *src, unsigned int srclen,
-			const u128 *shash);
+			const le128 *shash);
 
 struct ghash_async_ctx {
 	struct cryptd_ahash *cryptd_tfm;
 };
 
 struct ghash_ctx {
-	u128 shash;
+	le128 shash;
 };
 
 struct ghash_desc_ctx {
@@ -64,11 +64,11 @@  static int ghash_setkey(struct crypto_shash *tfm,
 	a = get_unaligned_be64(key);
 	b = get_unaligned_be64(key + 8);
 
-	ctx->shash.a = (b << 1) | (a >> 63);
-	ctx->shash.b = (a << 1) | (b >> 63);
+	ctx->shash.a = cpu_to_le64((a << 1) | (b >> 63));
+	ctx->shash.b = cpu_to_le64((b << 1) | (a >> 63));
 
 	if (a >> 63)
-		ctx->shash.b ^= ((u64)0xc2) << 56;
+		ctx->shash.a ^= cpu_to_le64((u64)0xc2 << 56);
 
 	return 0;
 }