summaryrefslogtreecommitdiff
path: root/drivers/net
diff options
context:
space:
mode:
authorEric Dumazet <eric.dumazet@gmail.com>2011-05-08 23:17:57 +0000
committerDavid S. Miller <davem@davemloft.net>2011-05-09 11:41:40 -0700
commit226bd3411471af42f7edbdfaf73f2d54ebb62a66 (patch)
tree3d815d5f9f2b060d2ce9567c2c2e8a6f5fbb42b0 /drivers/net
parent7ef73bca731fea9d4b706db2acb96b6488aa1b0e (diff)
net: use batched device unregister in veth and macvlan
veth devices dont use the batched device unregisters yet. Since veth are a pair of devices, it makes sense to use a batch of two unregisters, this roughly divides dismantle time by two. Fix this by changing dellink() callers to always provide a non NULL head. (Idea from Michał Mirosław) This patch also handles macvlan case : We now dismantle all macvlans on top of a lower dev at once. Reported-by: Alex Bligh <alex@alex.org.uk> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Michał Mirosław <mirqus@gmail.com> Cc: Jesse Gross <jesse@nicira.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/macvlan.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index 3ad5425b82dd..d7c0bc62da7f 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -785,6 +785,7 @@ static int macvlan_device_event(struct notifier_block *unused,
struct net_device *dev = ptr;
struct macvlan_dev *vlan, *next;
struct macvlan_port *port;
+ LIST_HEAD(list_kill);
if (!macvlan_port_exists(dev))
return NOTIFY_DONE;
@@ -810,7 +811,9 @@ static int macvlan_device_event(struct notifier_block *unused,
break;
list_for_each_entry_safe(vlan, next, &port->vlans, list)
- vlan->dev->rtnl_link_ops->dellink(vlan->dev, NULL);
+ vlan->dev->rtnl_link_ops->dellink(vlan->dev, &list_kill);
+ unregister_netdevice_many(&list_kill);
+ list_del(&list_kill);
break;
case NETDEV_PRE_TYPE_CHANGE:
/* Forbid underlaying device to change its type. */