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crypto: api - Introduce notifier for new crypto algorithms

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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>
This commit is contained in:
Martin K. Petersen
2018-08-30 11:00:14 -04:00
committed by Herbert Xu
parent 2fffee536c
commit dd8b083f9a
4 changed files with 14 additions and 8 deletions
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crypto/algboss.c
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@@ -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;