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crypto: algapi - remove obsoleted instance creation helpers

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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>
This commit is contained in:
Eric Biggers 2020-01-02 19:59:06 -08:00 committed by Herbert Xu
parent d5ed3b65f7
commit 629f1afc15
5 changed files with 0 additions and 154 deletions
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25
crypto/ahash.c
View File

@ -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;

57
crypto/algapi.c
View File

@ -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);

19
crypto/shash.c
View File

@ -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");

22
include/crypto/algapi.h
View File

@ -113,12 +113,8 @@ void crypto_unregister_instance(struct crypto_instance *inst);
int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg,
struct crypto_instance *inst, u32 mask);
int crypto_init_spawn2(struct crypto_spawn *spawn, struct crypto_alg *alg,
struct crypto_instance *inst,
const struct crypto_type *frontend);
int crypto_grab_spawn(struct crypto_spawn *spawn, struct crypto_instance *inst,
const char *name, u32 type, u32 mask);
void crypto_drop_spawn(struct crypto_spawn *spawn);
struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type,
u32 mask);
@ -127,21 +123,9 @@ void *crypto_spawn_tfm2(struct crypto_spawn *spawn);
struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb);
int crypto_check_attr_type(struct rtattr **tb, u32 type);
const char *crypto_attr_alg_name(struct rtattr *rta);
struct crypto_alg *crypto_attr_alg2(struct rtattr *rta,
const struct crypto_type *frontend,
u32 type, u32 mask);
static inline struct crypto_alg *crypto_attr_alg(struct rtattr *rta,
u32 type, u32 mask)
{
return crypto_attr_alg2(rta, NULL, type, mask);
}
int crypto_attr_u32(struct rtattr *rta, u32 *num);
int crypto_inst_setname(struct crypto_instance *inst, const char *name,
struct crypto_alg *alg);
void *crypto_alloc_instance(const char *name, struct crypto_alg *alg,
unsigned int head);
void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen);
int crypto_enqueue_request(struct crypto_queue *queue,
@ -254,12 +238,6 @@ static inline struct crypto_async_request *crypto_get_backlog(
container_of(queue->backlog, struct crypto_async_request, list);
}
static inline struct crypto_alg *crypto_get_attr_alg(struct rtattr **tb,
u32 type, u32 mask)
{
return crypto_attr_alg(tb[1], type, mask);
}
static inline int crypto_requires_off(u32 type, u32 mask, u32 off)
{
return (type ^ off) & mask & off;

31
include/crypto/internal/hash.h
View File

@ -87,7 +87,6 @@ int crypto_register_ahashes(struct ahash_alg *algs, int count);
void crypto_unregister_ahashes(struct ahash_alg *algs, int count);
int ahash_register_instance(struct crypto_template *tmpl,
struct ahash_instance *inst);
void ahash_free_instance(struct crypto_instance *inst);
int shash_no_setkey(struct crypto_shash *tfm, const u8 *key,
unsigned int keylen);
@ -105,10 +104,6 @@ static inline bool crypto_shash_alg_needs_key(struct shash_alg *alg)
bool crypto_hash_alg_has_setkey(struct hash_alg_common *halg);
int crypto_init_ahash_spawn(struct crypto_ahash_spawn *spawn,
struct hash_alg_common *alg,
struct crypto_instance *inst);
int crypto_grab_ahash(struct crypto_ahash_spawn *spawn,
struct crypto_instance *inst,
const char *name, u32 type, u32 mask);
@ -124,8 +119,6 @@ static inline struct hash_alg_common *crypto_spawn_ahash_alg(
return __crypto_hash_alg_common(spawn->base.alg);
}
struct hash_alg_common *ahash_attr_alg(struct rtattr *rta, u32 type, u32 mask);
int crypto_register_shash(struct shash_alg *alg);
void crypto_unregister_shash(struct shash_alg *alg);
int crypto_register_shashes(struct shash_alg *algs, int count);
@ -134,10 +127,6 @@ int shash_register_instance(struct crypto_template *tmpl,
struct shash_instance *inst);
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);
int crypto_grab_shash(struct crypto_shash_spawn *spawn,
struct crypto_instance *inst,
const char *name, u32 type, u32 mask);
@ -153,8 +142,6 @@ static inline struct shash_alg *crypto_spawn_shash_alg(
return __crypto_shash_alg(spawn->base.alg);
}
struct shash_alg *shash_attr_alg(struct rtattr *rta, u32 type, u32 mask);
int shash_ahash_update(struct ahash_request *req, struct shash_desc *desc);
int shash_ahash_finup(struct ahash_request *req, struct shash_desc *desc);
int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc);
@ -195,17 +182,6 @@ static inline void *ahash_instance_ctx(struct ahash_instance *inst)
return crypto_instance_ctx(ahash_crypto_instance(inst));
}
static inline unsigned int ahash_instance_headroom(void)
{
return sizeof(struct ahash_alg) - sizeof(struct crypto_alg);
}
static inline struct ahash_instance *ahash_alloc_instance(
const char *name, struct crypto_alg *alg)
{
return crypto_alloc_instance(name, alg, ahash_instance_headroom());
}
static inline void ahash_request_complete(struct ahash_request *req, int err)
{
req->base.complete(&req->base, err);
@ -262,13 +238,6 @@ static inline void *shash_instance_ctx(struct shash_instance *inst)
return crypto_instance_ctx(shash_crypto_instance(inst));
}
static inline struct shash_instance *shash_alloc_instance(
const char *name, struct crypto_alg *alg)
{
return crypto_alloc_instance(name, alg,
sizeof(struct shash_alg) - sizeof(*alg));
}
static inline struct crypto_shash *crypto_spawn_shash(
struct crypto_shash_spawn *spawn)
{