crypto: scatterwalk - Move skcipher walk and use it for memcpy_sglist

Move the generic part of skcipher walk into scatterwalk, and use
it to implement memcpy_sglist.

This makes memcpy_sglist do the right thing when two distinct SG
lists contain identical subsets (e.g., the AD part of AEAD).

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 0 insertions, 12 deletions

diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index 6999e10ea09e..f5f730969d72 100644
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -107,18 +107,6 @@ struct crypto_queue {
 	unsigned int max_qlen;
 };
 
-struct scatter_walk {
-	/* Must be the first member, see struct skcipher_walk. */
-	union {
-		void *const addr;
-
-		/* Private API field, do not touch. */
-		union crypto_no_such_thing *__addr;
-	};
-	struct scatterlist *sg;
-	unsigned int offset;
-};
-
 struct crypto_attr_alg {
 	char name[CRYPTO_MAX_ALG_NAME];
 };