diff options
| author | Martin K. Petersen <martin.petersen@oracle.com> | 2018-08-30 18:00:14 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-09-04 06:37:04 +0300 |
| commit | dd8b083f9a5ed06946d559e0ca1eda0577ef24a9 (patch) | |
| tree | b51a09a36977e0b3c96a290c1bcb053963b6d5f5 | |
| parent | 2fffee536c6875bdf546cee0045fed8faa5ea51f (diff) | |
| download | linux-dd8b083f9a5ed06946d559e0ca1eda0577ef24a9.tar.xz | |
crypto: api - Introduce notifier for new crypto algorithms
Introduce a facility that can be used to receive a notification
callback when a new algorithm becomes available. This can be used by
existing crypto registrations to trigger a switch from a software-only
algorithm to a hardware-accelerated version.
A new CRYPTO_MSG_ALG_LOADED state is introduced to the existing crypto
notification chain, and the register/unregister functions are exported
so they can be called by subsystems outside of crypto.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Suggested-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | crypto/algapi.c | 2 | ||||
| -rw-r--r-- | crypto/algboss.c | 2 | ||||
| -rw-r--r-- | crypto/internal.h | 8 | ||||
| -rw-r--r-- | include/crypto/algapi.h | 10 |
4 files changed, 14 insertions, 8 deletions
diff --git a/crypto/algapi.c b/crypto/algapi.c index 496fc51bf215..38daa8677da9 100644 --- a/crypto/algapi.c +++ b/crypto/algapi.c @@ -372,6 +372,8 @@ static void crypto_wait_for_test(struct crypto_larval *larval) err = wait_for_completion_killable(&larval->completion); WARN_ON(err); + if (!err) + crypto_probing_notify(CRYPTO_MSG_ALG_LOADED, larval); out: crypto_larval_kill(&larval->alg); diff --git a/crypto/algboss.c b/crypto/algboss.c index 5e6df2a087fa..527b44d0af21 100644 --- a/crypto/algboss.c +++ b/crypto/algboss.c @@ -274,6 +274,8 @@ static int cryptomgr_notify(struct notifier_block *this, unsigned long msg, return cryptomgr_schedule_probe(data); case CRYPTO_MSG_ALG_REGISTER: return cryptomgr_schedule_test(data); + case CRYPTO_MSG_ALG_LOADED: + break; } return NOTIFY_DONE; diff --git a/crypto/internal.h b/crypto/internal.h index 9a3f39939fba..ef769b5e8ad3 100644 --- a/crypto/internal.h +++ b/crypto/internal.h @@ -26,12 +26,6 @@ #include <linux/rwsem.h> #include <linux/slab.h> -/* Crypto notification events. */ -enum { - CRYPTO_MSG_ALG_REQUEST, - CRYPTO_MSG_ALG_REGISTER, -}; - struct crypto_instance; struct crypto_template; @@ -90,8 +84,6 @@ struct crypto_alg *crypto_find_alg(const char *alg_name, void *crypto_alloc_tfm(const char *alg_name, const struct crypto_type *frontend, u32 type, u32 mask); -int crypto_register_notifier(struct notifier_block *nb); -int crypto_unregister_notifier(struct notifier_block *nb); int crypto_probing_notify(unsigned long val, void *v); unsigned int crypto_alg_extsize(struct crypto_alg *alg); diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h index 21371ac8f355..4a5ad10e75f0 100644 --- a/include/crypto/algapi.h +++ b/include/crypto/algapi.h @@ -427,4 +427,14 @@ static inline void crypto_yield(u32 flags) #endif } +int crypto_register_notifier(struct notifier_block *nb); +int crypto_unregister_notifier(struct notifier_block *nb); + +/* Crypto notification events. */ +enum { + CRYPTO_MSG_ALG_REQUEST, + CRYPTO_MSG_ALG_REGISTER, + CRYPTO_MSG_ALG_LOADED, +}; + #endif /* _CRYPTO_ALGAPI_H */ |