/**
* tipc_l2_device_event - handle device events from network device
* @nb: the context of the notification
* @evt: the type of event
* @ptr: the net device that the event was on
*
* This function is called by the Ethernet driver in case of link
* change event.
*/
static int tipc_l2_device_event(struct notifier_block *nb, unsigned long evt,
void *ptr)
{
struct tipc_bearer *b_ptr;
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
if (!net_eq(dev_net(dev), &init_net))
return NOTIFY_DONE;
b_ptr = rtnl_dereference(dev->tipc_ptr);
if (!b_ptr)
return NOTIFY_DONE;
b_ptr->mtu = dev->mtu;
switch (evt) {
case NETDEV_CHANGE:
if (netif_carrier_ok(dev))
break;
case NETDEV_DOWN:
case NETDEV_CHANGEMTU:
tipc_reset_bearer(b_ptr);
break;
case NETDEV_CHANGEADDR:
b_ptr->media->raw2addr(b_ptr, &b_ptr->addr,
(char *)dev->dev_addr);
tipc_reset_bearer(b_ptr);
break;
case NETDEV_UNREGISTER:
case NETDEV_CHANGENAME:
bearer_disable(b_ptr, false);
break;
}
return NOTIFY_OK;
}
/* tipc_bearer_reset_all - reset all links on all bearers
*/
void tipc_bearer_reset_all(struct net *net)
{
struct tipc_net *tn = tipc_net(net);
struct tipc_bearer *b;
int i;
for (i = 0; i < MAX_BEARERS; i++) {
b = rcu_dereference_rtnl(tn->bearer_list[i]);
if (b)
tipc_reset_bearer(net, b);
}
}
/* tipc_bearer_reset_all - reset all links on all bearers
*/
void tipc_bearer_reset_all(struct net *net)
{
struct tipc_bearer *b;
int i;
for (i = 0; i < MAX_BEARERS; i++) {
b = bearer_get(net, i);
if (b)
clear_bit_unlock(0, &b->up);
}
for (i = 0; i < MAX_BEARERS; i++) {
b = bearer_get(net, i);
if (b)
tipc_reset_bearer(net, b);
}
for (i = 0; i < MAX_BEARERS; i++) {
b = bearer_get(net, i);
if (b)
test_and_set_bit_lock(0, &b->up);
}
}
