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net_device: add support for network device groups

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Net devices can now be grouped, enabling simpler manipulation from
userspace. This patch adds a group field to the net_device structure, as
well as rtnetlink support to query and modify it.

Signed-off-by: Vlad Dogaru <ddvlad@rosedu.org>
Acked-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vlad Dogaru
2011-01-13 23:38:30 +00:00
committed by David S. Miller
parent 441c793a56
commit cbda10fa97
4 changed files with 26 additions and 0 deletions
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7
include/linux/netdevice.h
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@ -75,6 +75,9 @@ struct wireless_dev;
#define NET_RX_SUCCESS 0 /* keep 'em coming, baby */
#define NET_RX_DROP 1 /* packet dropped */
/* Initial net device group. All devices belong to group 0 by default. */
#define INIT_NETDEV_GROUP 0
/*
* Transmit return codes: transmit return codes originate from three different
* namespaces:
@ -1153,6 +1156,9 @@ struct net_device {
/* phy device may attach itself for hardware timestamping */
struct phy_device *phydev;
/* group the device belongs to */
int group;
};
#define to_net_dev(d) container_of(d, struct net_device, dev)
@ -1844,6 +1850,7 @@ extern int dev_set_alias(struct net_device *, const char *, size_t);
extern int dev_change_net_namespace(struct net_device *,
struct net *, const char *);
extern int dev_set_mtu(struct net_device *, int);
extern void dev_set_group(struct net_device *, int);
extern int dev_set_mac_address(struct net_device *,
struct sockaddr *);
extern int dev_hard_start_xmit(struct sk_buff *skb,