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| author | YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | 2008-03-25 21:47:49 +0900 |
|---|---|---|
| committer | YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | 2008-03-26 04:39:53 +0900 |
| commit | c346dca10840a874240c78efe3f39acf4312a1f2 (patch) | |
| tree | c04cff20124eba5cc337cc5ec260ad2513eeb065 /include/linux/netdevice.h | |
| parent | 7cbca67c073263c179f605bdbbdc565ab29d801d (diff) | |
| download | kernel-crypto-c346dca10840a874240c78efe3f39acf4312a1f2.tar.gz kernel-crypto-c346dca10840a874240c78efe3f39acf4312a1f2.tar.xz kernel-crypto-c346dca10840a874240c78efe3f39acf4312a1f2.zip | |
[NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS.
Introduce per-net_device inlines: dev_net(), dev_net_set().
Without CONFIG_NET_NS, no namespace other than &init_net exists.
Let's explicitly define them to help compiler optimizations.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Diffstat (limited to 'include/linux/netdevice.h')
| -rw-r--r-- | include/linux/netdevice.h | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index ced61f87660..d146be40f46 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -708,8 +708,10 @@ struct net_device void (*poll_controller)(struct net_device *dev); #endif +#ifdef CONFIG_NET_NS /* Network namespace this network device is inside */ struct net *nd_net; +#endif /* bridge stuff */ struct net_bridge_port *br_port; @@ -737,6 +739,27 @@ struct net_device #define NETDEV_ALIGN 32 #define NETDEV_ALIGN_CONST (NETDEV_ALIGN - 1) +/* + * Net namespace inlines + */ +static inline +struct net *dev_net(const struct net_device *dev) +{ +#ifdef CONFIG_NET_NS + return dev->nd_net; +#else + return &init_net; +#endif +} + +static inline +void dev_net_set(struct net_device *dev, const struct net *net) +{ +#ifdef CONFIG_NET_NS + dev->nd_dev = net; +#endif +} + /** * netdev_priv - access network device private data * @dev: network device @@ -813,7 +836,7 @@ static inline struct net_device *next_net_device(struct net_device *dev) struct list_head *lh; struct net *net; - net = dev->nd_net; + net = dev_net(dev); lh = dev->dev_list.next; return lh == &net->dev_base_head ? NULL : net_device_entry(lh); } |