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authorHerbert Xu <herbert@gondor.apana.org.au>2007-10-04 15:24:05 +0800
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:55:48 -0700
commit7607bd8ff03b8af5af887931318cb2bb20361856 (patch)
treef714390d344511d65f7b866857102fbeb1d13741 /include/crypto
parent2614de1b9af5a9e49cda64b394e1348159565bd5 (diff)
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[CRYPTO] blkcipher: Added blkcipher_walk_virt_block
This patch adds the helper blkcipher_walk_virt_block which is similar to blkcipher_walk_virt but uses a supplied block size instead of the block size of the block cipher. This is useful for CTR where the block size is 1 but we still want to walk by the block size of the underlying cipher. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/crypto')
-rw-r--r--include/crypto/algapi.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index 4af72dc2120..b9b05d399d2 100644
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -91,6 +91,7 @@ struct blkcipher_walk {
u8 *iv;
int flags;
+ unsigned int blocksize;
};
extern const struct crypto_type crypto_ablkcipher_type;
@@ -129,6 +130,9 @@ int blkcipher_walk_virt(struct blkcipher_desc *desc,
struct blkcipher_walk *walk);
int blkcipher_walk_phys(struct blkcipher_desc *desc,
struct blkcipher_walk *walk);
+int blkcipher_walk_virt_block(struct blkcipher_desc *desc,
+ struct blkcipher_walk *walk,
+ unsigned int blocksize);
static inline void *crypto_tfm_ctx_aligned(struct crypto_tfm *tfm)
{