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authorStephen Hemminger <shemminger@linux-foundation.org>2007-02-22 01:10:18 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2007-02-26 11:42:59 -0800
commit269def7c505b4d229f9ad49bf88543d1e605533e (patch)
tree341377271f16c0def001a876217a8e6f430d75b4 /net/bridge/br_notify.c
parentac062e84d0c177c43549e7fb608152fec218e7fc (diff)
[BRIDGE]: eliminate workqueue for carrier check
Having a work queue for checking carrier leads to lots of race issues. Simpler to just get the cost when data structure is created and update on change. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_notify.c')
-rw-r--r--net/bridge/br_notify.c25
1 files changed, 11 insertions, 14 deletions
diff --git a/net/bridge/br_notify.c b/net/bridge/br_notify.c
index 3311c4e3082..37357ed2149 100644
--- a/net/bridge/br_notify.c
+++ b/net/bridge/br_notify.c
@@ -42,51 +42,48 @@ static int br_device_event(struct notifier_block *unused, unsigned long event, v
br = p->br;
- spin_lock_bh(&br->lock);
switch (event) {
case NETDEV_CHANGEMTU:
dev_set_mtu(br->dev, br_min_mtu(br));
break;
case NETDEV_CHANGEADDR:
+ spin_lock_bh(&br->lock);
br_fdb_changeaddr(p, dev->dev_addr);
br_ifinfo_notify(RTM_NEWLINK, p);
br_stp_recalculate_bridge_id(br);
+ spin_unlock_bh(&br->lock);
break;
case NETDEV_CHANGE:
- if (br->dev->flags & IFF_UP)
- if (schedule_delayed_work(&p->carrier_check,
- BR_PORT_DEBOUNCE))
- dev_hold(dev);
+ br_port_carrier_check(p);
break;
case NETDEV_FEAT_CHANGE:
- if (br->dev->flags & IFF_UP)
+ spin_lock_bh(&br->lock);
+ if (netif_running(br->dev))
br_features_recompute(br);
-
- /* could do recursive feature change notification
- * but who would care??
- */
+ spin_unlock_bh(&br->lock);
break;
case NETDEV_DOWN:
+ spin_lock_bh(&br->lock);
if (br->dev->flags & IFF_UP)
br_stp_disable_port(p);
+ spin_unlock_bh(&br->lock);
break;
case NETDEV_UP:
+ spin_lock_bh(&br->lock);
if (netif_carrier_ok(dev) && (br->dev->flags & IFF_UP))
br_stp_enable_port(p);
+ spin_unlock_bh(&br->lock);
break;
case NETDEV_UNREGISTER:
- spin_unlock_bh(&br->lock);
br_del_if(br, dev);
- goto done;
+ break;
}
- spin_unlock_bh(&br->lock);
- done:
return NOTIFY_DONE;
}