crypto: sha-mb - Fix total_len for correct hash when larger than 512MB

Current multi-buffer hash implementations have a restriction on the total
length of a hash job to 512MB. Hashing larger buffers will result in an
incorrect hash. This extends the limit to 2^62 - 1.

Signed-off-by: Greg Tucker <greg.b.tucker@intel.com>
Acked-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

arch/x86/crypto/sha1-mb/sha1_mb.c

@@ -114,7 +114,7 @@ static inline void sha1_init_digest(uint32_t *digest)
 }
 
 static inline uint32_t sha1_pad(uint8_t padblock[SHA1_BLOCK_SIZE * 2],
-			 uint32_t total_len)
+			 uint64_t total_len)
 {
 	uint32_t i = total_len & (SHA1_BLOCK_SIZE - 1);
 

arch/x86/crypto/sha1-mb/sha1_mb_ctx.h

@@ -125,7 +125,7 @@ struct sha1_hash_ctx {
 	/* error flag */
 	int error;
 
-	uint32_t	total_length;
+	uint64_t	total_length;
 	const void	*incoming_buffer;
 	uint32_t	incoming_buffer_length;
 	uint8_t		partial_block_buffer[SHA1_BLOCK_SIZE * 2];

arch/x86/crypto/sha256-mb/sha256_mb.c

@@ -115,7 +115,7 @@ inline void sha256_init_digest(uint32_t *digest)
 }
 
 inline uint32_t sha256_pad(uint8_t padblock[SHA256_BLOCK_SIZE * 2],
-			 uint32_t total_len)
+			 uint64_t total_len)
 {
 	uint32_t i = total_len & (SHA256_BLOCK_SIZE - 1);
 

arch/x86/crypto/sha256-mb/sha256_mb_ctx.h

@@ -125,7 +125,7 @@ struct sha256_hash_ctx {
 	/* error flag */
 	int error;
 
-	uint32_t	total_length;
+	uint64_t	total_length;
 	const void	*incoming_buffer;
 	uint32_t	incoming_buffer_length;
 	uint8_t		partial_block_buffer[SHA256_BLOCK_SIZE * 2];

arch/x86/crypto/sha512-mb/sha512_mb.c

@@ -117,7 +117,7 @@ inline void sha512_init_digest(uint64_t *digest)
 }
 
 inline uint32_t sha512_pad(uint8_t padblock[SHA512_BLOCK_SIZE * 2],
-			 uint32_t total_len)
+			 uint64_t total_len)
 {
 	uint32_t i = total_len & (SHA512_BLOCK_SIZE - 1);
 

arch/x86/crypto/sha512-mb/sha512_mb_ctx.h

@@ -119,7 +119,7 @@ struct sha512_hash_ctx {
 	/* error flag */
 	int error;
 
-	uint32_t        total_length;
+	uint64_t        total_length;
 	const void      *incoming_buffer;
 	uint32_t        incoming_buffer_length;
 	uint8_t         partial_block_buffer[SHA512_BLOCK_SIZE * 2];