tree c93d338e62e226a6bb75b27383521d133ae24ae0
parent 4b1b865e4e97e336316f30e32af36d71e98bdabc
author Junwei Zhang <martinbj2008@gmail.com> 1442548805 -0400
committer David S. Miller <davem@davemloft.net> 1442548979 -0700

net: only check perm protocol when register proto

The permanent protocol nodes are at the head of the list,
So only need check all these nodes.

No matter the new node is permanent or not,
insert the new node after the last permanent protocol node,

If the new node conflicts with existing permanent node,
return error.

Signed-off-by: Martin Zhang <martinbj2008@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>