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[BRIDGE]: handle speed detection after carrier changes

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Speed of a interface may not be available until carrier
is detected in the case of autonegotiation. To get the correct value
we need to recheck speed after carrier event.  But the check needs to
be done in a context that is similar to normal ethtool interface (can sleep).

Also, delay check for 1ms to try avoid any carrier bounce transitions.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger
2005-12-20 15:19:51 -08:00
committed by David S. Miller
parent 4505a3ef72
commit 4433f420e5
3 changed files with 44 additions and 22 deletions
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14
net/bridge/br_notify.c
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@@ -52,17 +52,9 @@ static int br_device_event(struct notifier_block *unused, unsigned long event, v
br_stp_recalculate_bridge_id(br);
break;
case NETDEV_CHANGE: /* device is up but carrier changed */
if (!(br->dev->flags & IFF_UP))
break;
if (netif_carrier_ok(dev)) {
if (p->state == BR_STATE_DISABLED)
br_stp_enable_port(p);
} else {
if (p->state != BR_STATE_DISABLED)
br_stp_disable_port(p);
}
case NETDEV_CHANGE:
if (br->dev->flags & IFF_UP)
schedule_delayed_work(&p->carrier_check, BR_PORT_DEBOUNCE);
break;
case NETDEV_FEAT_CHANGE: