crypto: api - add a helper to (un)register a array of templates

This patch add a helper to (un)register a array of templates. The
following patches will use this helper to simplify the code.

Signed-off-by: Xiongfeng Wang <xiongfeng.wang@linaro.org>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/crypto/algapi.c b/crypto/algapi.c
index 713baabeb64386e1cbf5165d5d3d2b4b001de853..4c9c86b557381e4d8ab29e52d13ece3c60228c74 100644 (file)
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -494,6 +494,24 @@ out:
 }
 EXPORT_SYMBOL_GPL(crypto_register_template);
 
+int crypto_register_templates(struct crypto_template *tmpls, int count)
+{
+       int i, err;
+
+       for (i = 0; i < count; i++) {
+               err = crypto_register_template(&tmpls[i]);
+               if (err)
+                       goto out;
+       }
+       return 0;
+
+out:
+       for (--i; i >= 0; --i)
+               crypto_unregister_template(&tmpls[i]);
+       return err;
+}
+EXPORT_SYMBOL_GPL(crypto_register_templates);
+
 void crypto_unregister_template(struct crypto_template *tmpl)
 {
        struct crypto_instance *inst;
@@ -523,6 +541,15 @@ void crypto_unregister_template(struct crypto_template *tmpl)
 }
 EXPORT_SYMBOL_GPL(crypto_unregister_template);
 
+void crypto_unregister_templates(struct crypto_template *tmpls, int count)
+{
+       int i;
+
+       for (i = count - 1; i >= 0; --i)
+               crypto_unregister_template(&tmpls[i]);
+}
+EXPORT_SYMBOL_GPL(crypto_unregister_templates);
+
 static struct crypto_template *__crypto_lookup_template(const char *name)
 {
        struct crypto_template *q, *tmpl = NULL;

diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index 093869f175d6bf4e943ab711aa9c69ad5c68be53..4be38cd0b8d5591cfcdb55c01786c2dc8043ce23 100644 (file)
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -143,7 +143,9 @@ extern const struct crypto_type crypto_blkcipher_type;
 void crypto_mod_put(struct crypto_alg *alg);
 
 int crypto_register_template(struct crypto_template *tmpl);
+int crypto_register_templates(struct crypto_template *tmpls, int count);
 void crypto_unregister_template(struct crypto_template *tmpl);
+void crypto_unregister_templates(struct crypto_template *tmpls, int count);
 struct crypto_template *crypto_lookup_template(const char *name);
 
 int crypto_register_instance(struct crypto_template *tmpl,