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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_if.c
parent[BRIDGE]: get rid of miscdevice include (diff)
downloadlinux-dev-269def7c505b4d229f9ad49bf88543d1e605533e.tar.xz
linux-dev-269def7c505b4d229f9ad49bf88543d1e605533e.zip
[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_if.c')
-rw-r--r--net/bridge/br_if.c30
1 files changed, 5 insertions, 25 deletions
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index aff6a779c9c8..6845a258408f 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -77,26 +77,15 @@ static int port_cost(struct net_device *dev)
* Called from work queue to allow for calling functions that
* might sleep (such as speed check), and to debounce.
*/
-static void port_carrier_check(struct work_struct *work)
+void br_port_carrier_check(struct net_bridge_port *p)
{
- struct net_bridge_port *p;
- struct net_device *dev;
- struct net_bridge *br;
-
- dev = container_of(work, struct net_bridge_port,
- carrier_check.work)->dev;
- work_release(work);
-
- rtnl_lock();
- p = dev->br_port;
- if (!p)
- goto done;
- br = p->br;
+ struct net_device *dev = p->dev;
+ struct net_bridge *br = p->br;
if (netif_carrier_ok(dev))
p->path_cost = port_cost(dev);
- if (br->dev->flags & IFF_UP) {
+ if (netif_running(br->dev)) {
spin_lock_bh(&br->lock);
if (netif_carrier_ok(dev)) {
if (p->state == BR_STATE_DISABLED)
@@ -107,9 +96,6 @@ static void port_carrier_check(struct work_struct *work)
}
spin_unlock_bh(&br->lock);
}
-done:
- dev_put(dev);
- rtnl_unlock();
}
static void release_nbp(struct kobject *kobj)
@@ -162,9 +148,6 @@ static void del_nbp(struct net_bridge_port *p)
dev_set_promiscuity(dev, -1);
- if (cancel_delayed_work(&p->carrier_check))
- dev_put(dev);
-
spin_lock_bh(&br->lock);
br_stp_disable_port(p);
spin_unlock_bh(&br->lock);
@@ -282,7 +265,6 @@ static struct net_bridge_port *new_nbp(struct net_bridge *br,
p->port_no = index;
br_init_port(p);
p->state = BR_STATE_DISABLED;
- INIT_DELAYED_WORK_NAR(&p->carrier_check, port_carrier_check);
br_stp_port_timer_init(p);
kobject_init(&p->kobj);
@@ -446,12 +428,10 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
spin_lock_bh(&br->lock);
br_stp_recalculate_bridge_id(br);
br_features_recompute(br);
- if (schedule_delayed_work(&p->carrier_check, BR_PORT_DEBOUNCE))
- dev_hold(dev);
-
spin_unlock_bh(&br->lock);
dev_set_mtu(br->dev, br_min_mtu(br));
+
kobject_uevent(&p->kobj, KOBJ_ADD);
return 0;