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authorHerbert Xu <herbert@gondor.apana.org.au>2015-05-11 17:47:39 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2015-05-13 10:31:25 +0800
commitd6ef2f198d4c9d95b77ee4918b97fc8a53c8a7b7 (patch)
tree4926330410a3ab29a0e2802120d4be77d7175b9f /crypto/algapi.c
parent6499e8cfaa8f5d041b20af24d8409dec9f3ac3d0 (diff)
downloadlinux-d6ef2f198d4c9d95b77ee4918b97fc8a53c8a7b7.tar.bz2
crypto: api - Add crypto_grab_spawn primitive
This patch adds a new primitive crypto_grab_spawn which is meant to replace crypto_init_spawn and crypto_init_spawn2. Under the new scheme the user no longer has to worry about reference counting the alg object before it is subsumed by the spawn. It is pretty much an exact copy of crypto_grab_aead. Prior to calling this function spawn->frontend and spawn->inst must have been set. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/algapi.c')
-rw-r--r--crypto/algapi.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/crypto/algapi.c b/crypto/algapi.c
index 3103e6a1282e..abf100c054e0 100644
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -612,6 +612,22 @@ out:
}
EXPORT_SYMBOL_GPL(crypto_init_spawn2);
+int crypto_grab_spawn(struct crypto_spawn *spawn, const char *name,
+ u32 type, u32 mask)
+{
+ struct crypto_alg *alg;
+ int err;
+
+ alg = crypto_find_alg(name, spawn->frontend, type, mask);
+ if (IS_ERR(alg))
+ return PTR_ERR(alg);
+
+ err = crypto_init_spawn(spawn, alg, spawn->inst, mask);
+ crypto_mod_put(alg);
+ return err;
+}
+EXPORT_SYMBOL_GPL(crypto_grab_spawn);
+
void crypto_drop_spawn(struct crypto_spawn *spawn)
{
if (!spawn->alg)