gre tunnels in 2.5/6

This small patch fixes gre tunnels using keys (and probably sequencing/checksums) in 2.{5,6}. If params aren't set before ipgre_tunnel_init is called, it miscalculates the header size, and stomps on itself when encapsulating packets.

I'm not sure if the later initialization can be removed, or if this is the *correct* patch. It does allow tunnels to work here.

-pee

(this might be a double send, i sent it last sunday, but didn't see it show up in the lists)

@@ -276,6 +276,8 @@
 	  return NULL;
 
 	dev->init = ipgre_tunnel_init;
+	nt = dev->priv;
+	nt->parms = *parms;
 
 	if (register_netdevice(dev) < 0) {
 		kfree(dev);

Your patch, as you posted it previously, was added to the kernel already. There is no need to retransmit and reexplain it.