From e008b5fc8dc7f46d9904001c7a2155eb1e7d35ab Mon Sep 17 00:00:00 2001
From: "Eric W. Biederman" <ebiederm@xmission.com>
Date: Sun, 29 Nov 2009 22:25:30 +0000
Subject: [PATCH] net: Simplfy default_device_exit and improve batching.
- Defer dellink to net_cleanup() allowing for batching.
- Fix comment.
- Use for_each_netdev_safe again as dev_change_net_namespace touches
at most one network device (unlike veth dellink).
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/core/dev.c | 16 ++++++----------
1 file changed, 6 insertions(+), 10 deletions(-)
diff --git a/net/core/dev.c b/net/core/dev.c
index bb37ee1e0901..e3e18dee0bd3 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5736,14 +5736,13 @@ static struct pernet_operations __net_initdata netdev_net_ops = {
static void __net_exit default_device_exit(struct net *net)
{
- struct net_device *dev;
+ struct net_device *dev, *aux;
/*
- * Push all migratable of the network devices back to the
+ * Push all migratable network devices back to the
* initial network namespace
*/
rtnl_lock();
-restart:
- for_each_netdev(net, dev) {
+ for_each_netdev_safe(net, dev, aux) {
int err;
char fb_name[IFNAMSIZ];
@@ -5751,11 +5750,9 @@ static void __net_exit default_device_exit(struct net *net)
if (dev->features & NETIF_F_NETNS_LOCAL)
continue;
- /* Delete virtual devices */
- if (dev->rtnl_link_ops && dev->rtnl_link_ops->dellink) {
- dev->rtnl_link_ops->dellink(dev, NULL);
- goto restart;
- }
+ /* Leave virtual devices for the generic cleanup */
+ if (dev->rtnl_link_ops)
+ continue;
/* Push remaing network devices to init_net */
snprintf(fb_name, IFNAMSIZ, "dev%d", dev->ifindex);
@@ -5765,7 +5762,6 @@ static void __net_exit default_device_exit(struct net *net)
__func__, dev->name, err);
BUG();
}
- goto restart;
}
rtnl_unlock();
}
--
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