crypto: Add bulk algorithm registration interface

[deliverable/linux.git] / crypto / algapi.c

diff --git a/crypto/algapi.c b/crypto/algapi.c
index 54dd4e33b5d61a5049713ee74ad9dc94d40670b6..056571b85445a20bf80f0054c0b2365a666edfde 100644 (file)
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -405,6 +405,41 @@ int crypto_unregister_alg(struct crypto_alg *alg)
 }
 EXPORT_SYMBOL_GPL(crypto_unregister_alg);
 
+int crypto_register_algs(struct crypto_alg *algs, int count)
+{
+       int i, ret;
+
+       for (i = 0; i < count; i++) {
+               ret = crypto_register_alg(&algs[i]);
+               if (ret)
+                       goto err;
+       }
+
+       return 0;
+
+err:
+       for (--i; i >= 0; --i)
+               crypto_unregister_alg(&algs[i]);
+
+       return ret;
+}
+EXPORT_SYMBOL_GPL(crypto_register_algs);
+
+int crypto_unregister_algs(struct crypto_alg *algs, int count)
+{
+       int i, ret;
+
+       for (i = 0; i < count; i++) {
+               ret = crypto_unregister_alg(&algs[i]);
+               if (ret)
+                       pr_err("Failed to unregister %s %s: %d\n",
+                              algs[i].cra_driver_name, algs[i].cra_name, ret);
+       }
+
+       return 0;
+}
+EXPORT_SYMBOL_GPL(crypto_unregister_algs);
+
 int crypto_register_template(struct crypto_template *tmpl)
 {
        struct crypto_template *q;
@@ -518,6 +553,35 @@ err:
 }
 EXPORT_SYMBOL_GPL(crypto_register_instance);
 
+int crypto_unregister_instance(struct crypto_alg *alg)
+{
+       int err;
+       struct crypto_instance *inst = (void *)alg;
+       struct crypto_template *tmpl = inst->tmpl;
+       LIST_HEAD(users);
+
+       if (!(alg->cra_flags & CRYPTO_ALG_INSTANCE))
+               return -EINVAL;
+
+       BUG_ON(atomic_read(&alg->cra_refcnt) != 1);
+
+       down_write(&crypto_alg_sem);
+
+       hlist_del_init(&inst->list);
+       err = crypto_remove_alg(alg, &users);
+
+       up_write(&crypto_alg_sem);
+
+       if (err)
+               return err;
+
+       tmpl->free(inst);
+       crypto_remove_final(&users);
+
+       return 0;
+}
+EXPORT_SYMBOL_GPL(crypto_unregister_instance);
+
 int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg,
                      struct crypto_instance *inst, u32 mask)
 {