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[4/6] crypto: ahash - Add ahash_alg_instance

Message ID E1k7ww4-0000e4-CM@fornost.hmeau.com (mailing list archive)
State Accepted
Delegated to: Herbert Xu
Headers show
Series crypto: Implement cmac based on cbc skcipher | expand

Commit Message

Herbert Xu Aug. 18, 2020, 8:25 a.m. UTC 
This patch adds the helper ahash_alg_instance which is used to
convert a crypto_ahash object into its corresponding ahash_instance.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

 include/crypto/internal/hash.h |    6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/include/crypto/internal/hash.h b/include/crypto/internal/hash.h
index 12665b72672d3..a6fbc4363e5e1 100644
--- a/include/crypto/internal/hash.h
+++ b/include/crypto/internal/hash.h
@@ -178,6 +178,12 @@  static inline struct ahash_instance *ahash_instance(
 	return container_of(inst, struct ahash_instance, s.base);
 }
 
+static inline struct ahash_instance *ahash_alg_instance(
+	struct crypto_ahash *ahash)
+{
+	return ahash_instance(crypto_tfm_alg_instance(&ahash->base));
+}
+
 static inline void *ahash_instance_ctx(struct ahash_instance *inst)
 {
 	return crypto_instance_ctx(ahash_crypto_instance(inst));