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authorMartin K. Petersen <martin.petersen@oracle.com>2018-08-30 11:00:14 -0400
committerHerbert Xu <herbert@gondor.apana.org.au>2018-09-04 11:37:04 +0800
commitdd8b083f9a5ed06946d559e0ca1eda0577ef24a9 (patch)
treeb51a09a36977e0b3c96a290c1bcb053963b6d5f5 /include/crypto
parent2fffee536c6875bdf546cee0045fed8faa5ea51f (diff)
downloadlinux-dd8b083f9a5ed06946d559e0ca1eda0577ef24a9.tar.bz2
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>
Diffstat (limited to 'include/crypto')
-rw-r--r--include/crypto/algapi.h10
1 files changed, 10 insertions, 0 deletions
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 */