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authorHerbert Xu <herbert@gondor.apana.org.au>2009-07-12 21:25:20 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2009-07-14 12:58:08 +0800
commit7eddf95ec5440d60f10963f453e27f82f394044e (patch)
tree4b1ba4bbf01f381a45d5bd6d26811f51ab81a3ff /crypto/shash.c
parent6941c3a0aabb6ad4167827360f384e9daed7dd7f (diff)
downloadlinux-7eddf95ec5440d60f10963f453e27f82f394044e.tar.gz
crypto: shash - Export async functions
This patch exports the async functions so that they can be reused by cryptd when it switches over to using shash. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/shash.c')
-rw-r--r--crypto/shash.c42
1 files changed, 22 insertions, 20 deletions
diff --git a/crypto/shash.c b/crypto/shash.c
index d8e0f8f8d67..3b1b06b3dcf 100644
--- a/crypto/shash.c
+++ b/crypto/shash.c
@@ -202,9 +202,8 @@ static int shash_async_init(struct ahash_request *req)
return crypto_shash_init(desc);
}
-static int shash_async_update(struct ahash_request *req)
+int shash_ahash_update(struct ahash_request *req, struct shash_desc *desc)
{
- struct shash_desc *desc = ahash_request_ctx(req);
struct crypto_hash_walk walk;
int nbytes;
@@ -214,13 +213,19 @@ static int shash_async_update(struct ahash_request *req)
return nbytes;
}
+EXPORT_SYMBOL_GPL(shash_ahash_update);
+
+static int shash_async_update(struct ahash_request *req)
+{
+ return shash_ahash_update(req, ahash_request_ctx(req));
+}
static int shash_async_final(struct ahash_request *req)
{
return crypto_shash_final(ahash_request_ctx(req), req->result);
}
-static int shash_async_digest(struct ahash_request *req)
+int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc)
{
struct scatterlist *sg = req->src;
unsigned int offset = sg->offset;
@@ -228,34 +233,31 @@ static int shash_async_digest(struct ahash_request *req)
int err;
if (nbytes < min(sg->length, ((unsigned int)(PAGE_SIZE)) - offset)) {
- struct crypto_shash **ctx =
- crypto_ahash_ctx(crypto_ahash_reqtfm(req));
- struct shash_desc *desc = ahash_request_ctx(req);
void *data;
- desc->tfm = *ctx;
- desc->flags = req->base.flags;
-
data = crypto_kmap(sg_page(sg), 0);
err = crypto_shash_digest(desc, data + offset, nbytes,
req->result);
crypto_kunmap(data, 0);
crypto_yield(desc->flags);
- goto out;
- }
+ } else
+ err = crypto_shash_init(desc) ?:
+ shash_ahash_update(req, desc) ?:
+ crypto_shash_final(desc, req->result);
- err = shash_async_init(req);
- if (err)
- goto out;
+ return err;
+}
+EXPORT_SYMBOL_GPL(shash_ahash_digest);
- err = shash_async_update(req);
- if (err)
- goto out;
+static int shash_async_digest(struct ahash_request *req)
+{
+ struct crypto_shash **ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
+ struct shash_desc *desc = ahash_request_ctx(req);
- err = shash_async_final(req);
+ desc->tfm = *ctx;
+ desc->flags = req->base.flags;
-out:
- return err;
+ return shash_ahash_digest(req, desc);
}
static void crypto_exit_shash_ops_async(struct crypto_tfm *tfm)