crypto: algapi - remove obsoleted instance creation helpers

Remove lots of helper functions that were previously used for
instantiating crypto templates, but are now unused:

- crypto_get_attr_alg() and similar functions looked up an inner
  algorithm directly from a template parameter.  These were replaced
  with getting the algorithm's name, then calling crypto_grab_*().

- crypto_init_spawn2() and similar functions initialized a spawn, given
  an algorithm.  Similarly, these were replaced with crypto_grab_*().

- crypto_alloc_instance() and similar functions allocated an instance
  with a single spawn, given the inner algorithm.  These aren't useful
  anymore since crypto_grab_*() need the instance allocated first.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

3 files changed, 0 insertions, 101 deletions

diff --git a/crypto/ahash.c b/crypto/ahash.c
index e98a1398ed7f..2b8449fdb93c 100644
--- a/crypto/ahash.c
+++ b/crypto/ahash.c
@@ -655,31 +655,6 @@ int ahash_register_instance(struct crypto_template *tmpl,
 }
 EXPORT_SYMBOL_GPL(ahash_register_instance);
 
-void ahash_free_instance(struct crypto_instance *inst)
-{
-	crypto_drop_spawn(crypto_instance_ctx(inst));
-	kfree(ahash_instance(inst));
-}
-EXPORT_SYMBOL_GPL(ahash_free_instance);
-
-int crypto_init_ahash_spawn(struct crypto_ahash_spawn *spawn,
-			    struct hash_alg_common *alg,
-			    struct crypto_instance *inst)
-{
-	return crypto_init_spawn2(&spawn->base, &alg->base, inst,
-				  &crypto_ahash_type);
-}
-EXPORT_SYMBOL_GPL(crypto_init_ahash_spawn);
-
-struct hash_alg_common *ahash_attr_alg(struct rtattr *rta, u32 type, u32 mask)
-{
-	struct crypto_alg *alg;
-
-	alg = crypto_attr_alg2(rta, &crypto_ahash_type, type, mask);
-	return IS_ERR(alg) ? ERR_CAST(alg) : __crypto_hash_alg_common(alg);
-}
-EXPORT_SYMBOL_GPL(ahash_attr_alg);
-
 bool crypto_hash_alg_has_setkey(struct hash_alg_common *halg)
 {
 	struct crypto_alg *alg = &halg->base;
diff --git a/crypto/algapi.c b/crypto/algapi.c
index a25ce02918f8..f66a4ff57e6e 100644
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -697,23 +697,6 @@ int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg,
 }
 EXPORT_SYMBOL_GPL(crypto_init_spawn);
 
-int crypto_init_spawn2(struct crypto_spawn *spawn, struct crypto_alg *alg,
-		       struct crypto_instance *inst,
-		       const struct crypto_type *frontend)
-{
-	int err = -EINVAL;
-
-	if ((alg->cra_flags ^ frontend->type) & frontend->maskset)
-		goto out;
-
-	spawn->frontend = frontend;
-	err = crypto_init_spawn(spawn, alg, inst, frontend->maskset);
-
-out:
-	return err;
-}
-EXPORT_SYMBOL_GPL(crypto_init_spawn2);
-
 int crypto_grab_spawn(struct crypto_spawn *spawn, struct crypto_instance *inst,
 		      const char *name, u32 type, u32 mask)
 {
@@ -876,20 +859,6 @@ const char *crypto_attr_alg_name(struct rtattr *rta)
 }
 EXPORT_SYMBOL_GPL(crypto_attr_alg_name);
 
-struct crypto_alg *crypto_attr_alg2(struct rtattr *rta,
-				    const struct crypto_type *frontend,
-				    u32 type, u32 mask)
-{
-	const char *name;
-
-	name = crypto_attr_alg_name(rta);
-	if (IS_ERR(name))
-		return ERR_CAST(name);
-
-	return crypto_find_alg(name, frontend, type, mask);
-}
-EXPORT_SYMBOL_GPL(crypto_attr_alg2);
-
 int crypto_attr_u32(struct rtattr *rta, u32 *num)
 {
 	struct crypto_attr_u32 *nu32;
@@ -923,32 +892,6 @@ int crypto_inst_setname(struct crypto_instance *inst, const char *name,
 }
 EXPORT_SYMBOL_GPL(crypto_inst_setname);
 
-void *crypto_alloc_instance(const char *name, struct crypto_alg *alg,
-			    unsigned int head)
-{
-	struct crypto_instance *inst;
-	char *p;
-	int err;
-
-	p = kzalloc(head + sizeof(*inst) + sizeof(struct crypto_spawn),
-		    GFP_KERNEL);
-	if (!p)
-		return ERR_PTR(-ENOMEM);
-
-	inst = (void *)(p + head);
-
-	err = crypto_inst_setname(inst, name, alg);
-	if (err)
-		goto err_free_inst;
-
-	return p;
-
-err_free_inst:
-	kfree(p);
-	return ERR_PTR(err);
-}
-EXPORT_SYMBOL_GPL(crypto_alloc_instance);
-
 void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen)
 {
 	INIT_LIST_HEAD(&queue->list);
diff --git a/crypto/shash.c b/crypto/shash.c
index e0872ac2729a..4d6ccb59e126 100644
--- a/crypto/shash.c
+++ b/crypto/shash.c
@@ -584,24 +584,5 @@ 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);
-
-struct shash_alg *shash_attr_alg(struct rtattr *rta, u32 type, u32 mask)
-{
-	struct crypto_alg *alg;
-
-	alg = crypto_attr_alg2(rta, &crypto_shash_type, type, mask);
-	return IS_ERR(alg) ? ERR_CAST(alg) :
-	       container_of(alg, struct shash_alg, base);
-}
-EXPORT_SYMBOL_GPL(shash_attr_alg);
-
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Synchronous cryptographic hash type");