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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2009-10-27 07:03:04 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-10-28 02:22:06 -0700 |
| commit | 44a0873d52282f24b1894c58c0f157e0f626ddc9 (patch) | |
| tree | 2d913650b6c9474f135546cf06fe5e8d174ef478 | |
| parent | 83ab50a56e6ea94627fea83ce7b03332bd4c2f02 (diff) | |
| download | linux-3.10-44a0873d52282f24b1894c58c0f157e0f626ddc9.tar.gz linux-3.10-44a0873d52282f24b1894c58c0f157e0f626ddc9.tar.bz2 linux-3.10-44a0873d52282f24b1894c58c0f157e0f626ddc9.zip | |
net: Introduce unregister_netdevice_queue()
This patchs adds an unreg_list anchor to struct net_device, and
introduces an unregister_netdevice_queue() function, able to queue
a net_device to a list instead of immediately unregister it.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/linux/netdevice.h | 9 | ||||
| -rw-r--r-- | net/core/dev.c | 20 |
2 files changed, 21 insertions, 8 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 83800091a31..0ded0a4768a 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -683,6 +683,7 @@ struct net_device struct list_head dev_list; struct list_head napi_list; + struct list_head unreg_list; /* Net device features */ unsigned long features; @@ -1116,7 +1117,13 @@ extern int dev_close(struct net_device *dev); extern void dev_disable_lro(struct net_device *dev); extern int dev_queue_xmit(struct sk_buff *skb); extern int register_netdevice(struct net_device *dev); -extern void unregister_netdevice(struct net_device *dev); +extern void unregister_netdevice_queue(struct net_device *dev, + struct list_head *head); +static inline void unregister_netdevice(struct net_device *dev) +{ + unregister_netdevice_queue(dev, NULL); +} + extern void free_netdev(struct net_device *dev); extern void synchronize_net(void); extern int register_netdevice_notifier(struct notifier_block *nb); diff --git a/net/core/dev.c b/net/core/dev.c index 950c13fa60d..ff94e2b8df7 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -5245,25 +5245,31 @@ void synchronize_net(void) EXPORT_SYMBOL(synchronize_net); /** - * unregister_netdevice - remove device from the kernel + * unregister_netdevice_queue - remove device from the kernel * @dev: device - * + * @head: list + * This function shuts down a device interface and removes it * from the kernel tables. + * If head not NULL, device is queued to be unregistered later. * * Callers must hold the rtnl semaphore. You may want * unregister_netdev() instead of this. */ -void unregister_netdevice(struct net_device *dev) +void unregister_netdevice_queue(struct net_device *dev, struct list_head *head) { ASSERT_RTNL(); - rollback_registered(dev); - /* Finish processing unregister after unlock */ - net_set_todo(dev); + if (head) { + list_add_tail(&dev->unreg_list, head); + } else { + rollback_registered(dev); + /* Finish processing unregister after unlock */ + net_set_todo(dev); + } } -EXPORT_SYMBOL(unregister_netdevice); +EXPORT_SYMBOL(unregister_netdevice_queue); /** * unregister_netdev - remove device from the kernel |