netns 2/2: extract net_create()

[safe/jmp/linux-2.6] / crypto / api.c

diff --git a/crypto/api.c b/crypto/api.c
index 9975a7b..314dab9 100644 (file)
--- a/crypto/api.c
+++ b/crypto/api.c
@@ -215,8 +215,19 @@ struct crypto_alg *crypto_larval_lookup(const char *name, u32 type, u32 mask)
        mask &= ~(CRYPTO_ALG_LARVAL | CRYPTO_ALG_DEAD);
        type &= mask;
 
-       alg = try_then_request_module(crypto_alg_lookup(name, type, mask),
-                                     name);
+       alg = crypto_alg_lookup(name, type, mask);
+       if (!alg) {
+               char tmp[CRYPTO_MAX_ALG_NAME];
+
+               request_module(name);
+
+               if (!((type ^ CRYPTO_ALG_NEED_FALLBACK) & mask) &&
+                   snprintf(tmp, sizeof(tmp), "%s-all", name) < sizeof(tmp))
+                       request_module(tmp);
+
+               alg = crypto_alg_lookup(name, type, mask);
+       }
+
        if (alg)
                return crypto_is_larval(alg) ? crypto_larval_wait(alg) : alg;
 
@@ -244,7 +255,7 @@ struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask)
        struct crypto_alg *larval;
        int ok;
 
-       if (!(mask & CRYPTO_ALG_TESTED)) {
+       if (!((type | mask) & CRYPTO_ALG_TESTED)) {
                type |= CRYPTO_ALG_TESTED;
                mask |= CRYPTO_ALG_TESTED;
        }
@@ -453,8 +464,8 @@ err:
 }
 EXPORT_SYMBOL_GPL(crypto_alloc_base);
 
-struct crypto_tfm *crypto_create_tfm(struct crypto_alg *alg,
-                                    const struct crypto_type *frontend)
+void *crypto_create_tfm(struct crypto_alg *alg,
+                       const struct crypto_type *frontend)
 {
        char *mem;
        struct crypto_tfm *tfm = NULL;
@@ -488,9 +499,9 @@ out_free_tfm:
                crypto_shoot_alg(alg);
        kfree(mem);
 out_err:
-       tfm = ERR_PTR(err);
+       mem = ERR_PTR(err);
 out:
-       return tfm;
+       return mem;
 }
 EXPORT_SYMBOL_GPL(crypto_create_tfm);
 
@@ -514,12 +525,11 @@ EXPORT_SYMBOL_GPL(crypto_create_tfm);
  *
  *     In case of error the return value is an error pointer.
  */
-struct crypto_tfm *crypto_alloc_tfm(const char *alg_name,
-                                   const struct crypto_type *frontend,
-                                   u32 type, u32 mask)
+void *crypto_alloc_tfm(const char *alg_name,
+                      const struct crypto_type *frontend, u32 type, u32 mask)
 {
        struct crypto_alg *(*lookup)(const char *name, u32 type, u32 mask);
-       struct crypto_tfm *tfm;
+       void *tfm;
        int err;
 
        type &= frontend->maskclear;
@@ -557,34 +567,34 @@ err:
        return ERR_PTR(err);
 }
 EXPORT_SYMBOL_GPL(crypto_alloc_tfm);
- 
+
 /*
- *     crypto_free_tfm - Free crypto transform
+ *     crypto_destroy_tfm - Free crypto transform
+ *     @mem: Start of tfm slab
  *     @tfm: Transform to free
  *
- *     crypto_free_tfm() frees up the transform and any associated resources,
+ *     This function frees up the transform and any associated resources,
  *     then drops the refcount on the associated algorithm.
  */
-void crypto_free_tfm(struct crypto_tfm *tfm)
+void crypto_destroy_tfm(void *mem, struct crypto_tfm *tfm)
 {
        struct crypto_alg *alg;
        int size;
 
-       if (unlikely(!tfm))
+       if (unlikely(!mem))
                return;
 
        alg = tfm->__crt_alg;
-       size = sizeof(*tfm) + alg->cra_ctxsize;
+       size = ksize(mem);
 
        if (!tfm->exit && alg->cra_exit)
                alg->cra_exit(tfm);
        crypto_exit_ops(tfm);
        crypto_mod_put(alg);
-       memset(tfm, 0, size);
-       kfree(tfm);
+       memset(mem, 0, size);
+       kfree(mem);
 }
-
-EXPORT_SYMBOL_GPL(crypto_free_tfm);
+EXPORT_SYMBOL_GPL(crypto_destroy_tfm);
 
 int crypto_has_alg(const char *name, u32 type, u32 mask)
 {