[CRYPTO] api: Added spawns
Spawns lock a specific crypto algorithm in place. They can then be used
with crypto_spawn_tfm to allocate a tfm for that algorithm. When the base
algorithm of a spawn is deregistered, all its spawns will be automatically
removed.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index ffec530..b20f4bd 100644
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -36,10 +36,21 @@
char name[CRYPTO_MAX_ALG_NAME];
};
+struct crypto_spawn {
+ struct list_head list;
+ struct crypto_alg *alg;
+ struct crypto_instance *inst;
+};
+
int crypto_register_template(struct crypto_template *tmpl);
void crypto_unregister_template(struct crypto_template *tmpl);
struct crypto_template *crypto_lookup_template(const char *name);
+int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg,
+ struct crypto_instance *inst);
+void crypto_drop_spawn(struct crypto_spawn *spawn);
+struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn);
+
static inline void *crypto_instance_ctx(struct crypto_instance *inst)
{
return inst->__ctx;