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rtnl: add link netns id to interface messages

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This patch adds a new attribute (IFLA_LINK_NETNSID) which contains the 'link'
netns id when this netns is different from the netns where the interface
stands (for example for x-net interfaces like ip tunnels).
With this attribute, it's possible to interpret correctly all advertised
information (like IFLA_LINK, etc.).

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nicolas Dichtel 2015-01-15 15:11:16 +01:00 • committed by David S. Miller
parent 0c7aecd4bd
commit d37512a277
3 changed files with 16 additions and 0 deletions
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2
include/net/rtnetlink.h
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@ -46,6 +46,7 @@ static inline int rtnl_msg_family(const struct nlmsghdr *nlh)
* to create when creating a new device.
* @get_num_rx_queues: Function to determine number of receive queues
* to create when creating a new device.
* @get_link_net: Function to get the i/o netns of the device
*/
struct rtnl_link_ops {
struct list_head list;
@ -93,6 +94,7 @@ struct rtnl_link_ops {
int (*fill_slave_info)(struct sk_buff *skb,
const struct net_device *dev,
const struct net_device *slave_dev);
struct net *(*get_link_net)(const struct net_device *dev);
};
int __rtnl_link_register(struct rtnl_link_ops *ops);