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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2011-05-08 23:17:57 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-05-09 11:41:40 -0700 |
| commit | 226bd3411471af42f7edbdfaf73f2d54ebb62a66 (patch) | |
| tree | 3d815d5f9f2b060d2ce9567c2c2e8a6f5fbb42b0 | |
| parent | 7ef73bca731fea9d4b706db2acb96b6488aa1b0e (diff) | |
| download | kernel-common-226bd3411471af42f7edbdfaf73f2d54ebb62a66.tar.gz kernel-common-226bd3411471af42f7edbdfaf73f2d54ebb62a66.tar.bz2 kernel-common-226bd3411471af42f7edbdfaf73f2d54ebb62a66.zip | |
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>
| -rw-r--r-- | drivers/net/macvlan.c | 5 | ||||
| -rw-r--r-- | net/core/rtnetlink.c | 5 |
2 files changed, 8 insertions, 2 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. */ diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 5a160f4a1ba0..d2ba2597c75a 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -1501,6 +1501,7 @@ static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) char ifname[IFNAMSIZ]; struct nlattr *tb[IFLA_MAX+1]; int err; + LIST_HEAD(list_kill); err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); if (err < 0) @@ -1524,7 +1525,9 @@ static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) if (!ops) return -EOPNOTSUPP; - ops->dellink(dev, NULL); + ops->dellink(dev, &list_kill); + unregister_netdevice_many(&list_kill); + list_del(&list_kill); return 0; } |