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| author | Eric W. Biederman <ebiederm@xmission.com> | 2009-12-03 02:29:04 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-12-03 12:22:02 -0800 |
| commit | 04dc7f6be3a7b308f8545bb45772c9fb75f71aca (patch) | |
| tree | 11cfe976f4adffdbdeeed71f591613089e9d6fe5 | |
| parent | 72ad937abd0a43b7cf2c557ba1f2ec75e608c516 (diff) | |
| download | linux-04dc7f6be3a7b308f8545bb45772c9fb75f71aca.tar.gz | |
net: Move network device exit batching
Move network device exit batching from a special case in net_namespace.c to using common mechanisms in dev.c Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/core/dev.c | 25 | ||||
| -rw-r--r-- | net/core/net_namespace.c | 24 |
2 files changed, 25 insertions, 24 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index e3e18dee0bd3..0913a08a87d6 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -5766,8 +5766,33 @@ static void __net_exit default_device_exit(struct net *net) rtnl_unlock(); } +static void __net_exit default_device_exit_batch(struct list_head *net_list) +{ + /* At exit all network devices most be removed from a network + * namespace. Do this in the reverse order of registeration. + * Do this across as many network namespaces as possible to + * improve batching efficiency. + */ + struct net_device *dev; + struct net *net; + LIST_HEAD(dev_kill_list); + + rtnl_lock(); + list_for_each_entry(net, net_list, exit_list) { + for_each_netdev_reverse(net, dev) { + if (dev->rtnl_link_ops) + dev->rtnl_link_ops->dellink(dev, &dev_kill_list); + else + unregister_netdevice_queue(dev, &dev_kill_list); + } + } + unregister_netdevice_many(&dev_kill_list); + rtnl_unlock(); +} + static struct pernet_operations __net_initdata default_device_ops = { .exit = default_device_exit, + .exit_batch = default_device_exit_batch, }; /* diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c index 6c7f6e04dbbf..4026a4cff93c 100644 --- a/net/core/net_namespace.c +++ b/net/core/net_namespace.c @@ -8,10 +8,8 @@ #include <linux/idr.h> #include <linux/rculist.h> #include <linux/nsproxy.h> -#include <linux/netdevice.h> #include <net/net_namespace.h> #include <net/netns/generic.h> -#include <net/rtnetlink.h> /* * Our network namespace constructor/destructor lists @@ -29,20 +27,6 @@ EXPORT_SYMBOL(init_net); #define INITIAL_NET_GEN_PTRS 13 /* +1 for len +2 for rcu_head */ -static void unregister_netdevices(struct net *net, struct list_head *list) -{ - struct net_device *dev; - /* At exit all network devices most be removed from a network - * namespace. Do this in the reverse order of registeration. - */ - for_each_netdev_reverse(net, dev) { - if (dev->rtnl_link_ops) - dev->rtnl_link_ops->dellink(dev, list); - else - unregister_netdevice_queue(dev, list); - } -} - static int ops_init(const struct pernet_operations *ops, struct net *net) { int err; @@ -78,14 +62,6 @@ static void ops_exit_list(const struct pernet_operations *ops, list_for_each_entry(net, net_exit_list, exit_list) ops->exit(net); } - if (&ops->list == first_device) { - LIST_HEAD(dev_kill_list); - rtnl_lock(); - list_for_each_entry(net, net_exit_list, exit_list) - unregister_netdevices(net, &dev_kill_list); - unregister_netdevice_many(&dev_kill_list); - rtnl_unlock(); - } if (ops->exit_batch) ops->exit_batch(net_exit_list); } |