-
-struct nf_conntrack_helper *
-nf_ct_helper_find_get(const struct nf_conntrack_tuple *tuple)
-{
- struct nf_conntrack_helper *helper;
-
- /* need nf_conntrack_lock to assure that helper exists until
- * try_module_get() is called */
- read_lock_bh(&nf_conntrack_lock);
-
- helper = __nf_ct_helper_find(tuple);
- if (helper) {
- /* need to increase module usage count to assure helper will
- * not go away while the caller is e.g. busy putting a
- * conntrack in the hash that uses the helper */
- if (!try_module_get(helper->me))
- helper = NULL;
- }
-
- read_unlock_bh(&nf_conntrack_lock);
-
- return helper;
-}
-EXPORT_SYMBOL_GPL(nf_ct_helper_find_get);
-
-void nf_ct_helper_put(struct nf_conntrack_helper *helper)
-{
- module_put(helper->me);
-}
-EXPORT_SYMBOL_GPL(nf_ct_helper_put);