crypto: shash - Add spawn support
This patch adds the functions needed to create and use shash
spawns, i.e., to use shash algorithms in a template.
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
---
crypto/shash.c | 9 +++++++++
include/crypto/internal/hash.h | 14 ++++++++++++++
2 files changed, 23 insertions(+)
diff --git a/crypto/shash.c b/crypto/shash.c
index 8f9d883..97f6c8b 100644
--- a/crypto/shash.c
+++ b/crypto/shash.c
@@ -509,5 +509,14 @@ void shash_free_instance(struct crypto_instance *inst)
}
EXPORT_SYMBOL_GPL(shash_free_instance);
+int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn,
+ struct shash_alg *alg,
+ struct crypto_instance *inst)
+{
+ return crypto_init_spawn2(&spawn->base, &alg->base, inst,
+ &crypto_shash_type);
+}
+EXPORT_SYMBOL_GPL(crypto_init_shash_spawn);
+
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Synchronous cryptographic hash type");
diff --git a/include/crypto/internal/hash.h b/include/crypto/internal/hash.h
index 44d3bcd..6cc824b 100644
--- a/include/crypto/internal/hash.h
+++ b/include/crypto/internal/hash.h
@@ -38,6 +38,10 @@ struct shash_instance {
struct shash_alg alg;
};
+struct crypto_shash_spawn {
+ struct crypto_spawn base;
+};
+
extern const struct crypto_type crypto_ahash_type;
int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err);
@@ -52,6 +56,10 @@ int crypto_unregister_shash(struct shash_alg *alg);
void shash_free_instance(struct crypto_instance *inst);
+int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn,
+ struct shash_alg *alg,
+ struct crypto_instance *inst);
+
static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm)
{
return crypto_tfm_ctx(&tfm->base);
@@ -106,5 +114,11 @@ static inline struct shash_instance *shash_alloc_instance(
sizeof(struct shash_alg) - sizeof(*alg));
}
+static inline struct crypto_shash *crypto_spawn_shash(
+ struct crypto_shash_spawn *spawn)
+{
+ return crypto_spawn_tfm2(&spawn->base);
+}
+
#endif /* _CRYPTO_INTERNAL_HASH_H */
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