/* called under bridge lock */
static void br_stp_change_bridge_id(struct net_bridge *br, unsigned char *addr)
{
unsigned char oldaddr[6];
struct net_bridge_port *p;
int wasroot;
wasroot = br_is_root_bridge(br);
memcpy(oldaddr, br->bridge_id.addr, ETH_ALEN);
memcpy(br->bridge_id.addr, addr, ETH_ALEN);
memcpy(br->dev.dev_addr, addr, ETH_ALEN);
p = br->port_list;
while (p != NULL) {
if (!memcmp(p->designated_bridge.addr, oldaddr, ETH_ALEN))
memcpy(p->designated_bridge.addr, addr, ETH_ALEN);
if (!memcmp(p->designated_root.addr, oldaddr, ETH_ALEN))
memcpy(p->designated_root.addr, addr, ETH_ALEN);
p = p->next;
}
br_configuration_update(br);
br_port_state_selection(br);
if (br_is_root_bridge(br) && !wasroot)
br_become_root_bridge(br);
}
/* called under bridge lock */
void br_stp_disable_port(struct net_bridge_port *p)
{
struct net_bridge *br;
int wasroot;
br = p->br;
printk(KERN_INFO "%s: port %i(%s) entering %s state\n",
br->dev.name, p->port_no, p->dev->name, "disabled");
wasroot = br_is_root_bridge(br);
br_become_designated_port(p);
p->state = BR_STATE_DISABLED;
p->topology_change_ack = 0;
p->config_pending = 0;
br_timer_clear(&p->message_age_timer);
br_timer_clear(&p->forward_delay_timer);
br_timer_clear(&p->hold_timer);
br_configuration_update(br);
br_port_state_selection(br);
if (br_is_root_bridge(br) && !wasroot)
br_become_root_bridge(br);
}
/* called under bridge lock */
static void br_message_age_timer_expired(struct net_bridge_port *p)
{
struct net_bridge *br;
int was_root;
br = p->br;
printk(KERN_INFO "%s: ", br->dev.name);
printk("neighbour ");
dump_bridge_id(&p->designated_bridge);
printk(" lost on port %i(%s)\n", p->port_no, p->dev->name);
/*
* According to the spec, the message age timer cannot be
* running when we are the root bridge. So.. this was_root
* check is redundant. I'm leaving it in for now, though.
*/
was_root = br_is_root_bridge(br);
br_become_designated_port(p);
br_configuration_update(br);
br_port_state_selection(br);
if (br_is_root_bridge(br) && !was_root)
br_become_root_bridge(br);
}
