From: martinbj2...@gmail.com
Date: Tue, 15 Sep 2015 08:14:05 +0800
> @@ -1043,22 +1043,16 @@ void inet_register_protosw(struct inet_protosw *p)
> goto out_illegal;
>
> /* If we are trying to override a permanent protocol, bail. */
> - answer = NULL;
> last_perm = &i
From: Junwei Zhang
the permanent protocol nodes are at the head of the list.
So only need check all these nodes.
and insert the new node after the last permanent protocol node,
no matter new node is permanent or not.
If the inserted proto conflicts with existing permanent protocol,
then goto ou
