From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Sun, 6 Aug 2006 13:12:59 +0000 (+1000)
Subject: [CRYPTO] api: Added asynchronous flag
X-Git-Tag: firefly_0821_release~33671^2~34
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f3f632d61ae9af85d436706ee8e33af1a7fb9c28;p=firefly-linux-kernel-4.4.55.git

[CRYPTO] api: Added asynchronous flag

This patch adds the asynchronous flag and changes all existing users to
only look up algorithms that are synchronous.

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

diff --git a/crypto/api.c b/crypto/api.c
index 7e5522cf856e..1e4692a13474 100644
--- a/crypto/api.c
+++ b/crypto/api.c
@@ -355,7 +355,7 @@ struct crypto_tfm *crypto_alloc_tfm(const char *name, u32 flags)
 	do {
 		struct crypto_alg *alg;
 
-		alg = crypto_alg_mod_lookup(name, 0, 0);
+		alg = crypto_alg_mod_lookup(name, 0, CRYPTO_ALG_ASYNC);
 		err = PTR_ERR(alg);
 		if (IS_ERR(alg))
 			continue;
@@ -394,7 +394,8 @@ void crypto_free_tfm(struct crypto_tfm *tfm)
 int crypto_alg_available(const char *name, u32 flags)
 {
 	int ret = 0;
-	struct crypto_alg *alg = crypto_alg_mod_lookup(name, 0, 0);
+	struct crypto_alg *alg = crypto_alg_mod_lookup(name, 0,
+						       CRYPTO_ALG_ASYNC);
 	
 	if (!IS_ERR(alg)) {
 		crypto_mod_put(alg);
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index dbdfc7c79367..530dc4bf363c 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -37,6 +37,7 @@
 #define CRYPTO_ALG_LARVAL		0x00000010
 #define CRYPTO_ALG_DEAD			0x00000020
 #define CRYPTO_ALG_DYING		0x00000040
+#define CRYPTO_ALG_ASYNC		0x00000080
 
 /*
  * Transform masks and values (for crt_flags).