net: bridge: add a br_set_state helper function

In preparation for being able to propagate port states to e.g: notifiers
or other kernel parts, do not manipulate the port state directly, but
instead use a helper function which will allow us to do a bit more than
just setting the state.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/bridge/br_stp_if.c

@@ -37,7 +37,7 @@ void br_init_port(struct net_bridge_port *p)
 {
 	p->port_id = br_make_port_id(p->priority, p->port_no);
 	br_become_designated_port(p);
-	p->state = BR_STATE_BLOCKING;
+	br_set_state(p, BR_STATE_BLOCKING);
 	p->topology_change_ack = 0;
 	p->config_pending = 0;
 }
@@ -100,7 +100,7 @@ void br_stp_disable_port(struct net_bridge_port *p)
 
 	wasroot = br_is_root_bridge(br);
 	br_become_designated_port(p);
-	p->state = BR_STATE_DISABLED;
+	br_set_state(p, BR_STATE_DISABLED);
 	p->topology_change_ack = 0;
 	p->config_pending = 0;