#ifndef __NET_RTNETLINK_H#define __NET_RTNETLINK_H #include <linux/rtnetlink.h>#include <net/netlink.h> typedef int (*rtnl_doit_func)(struct sk_buff *, struct nlmsghdr *, void *);typedef int (*rtnl_dumpit_func)(struct sk_buff *, struct netlink_callback *); extern int	__rtnl_register(int protocol, int msgtype,				rtnl_doit_func, rtnl_dumpit_func);extern void	rtnl_register(int protocol, int msgtype,			      rtnl_doit_func, rtnl_dumpit_func);extern int	rtnl_unregister(int protocol, int msgtype);extern void	rtnl_unregister_all(int protocol); static inline int rtnl_msg_family(struct nlmsghdr *nlh){	if (nlmsg_len(nlh) >= sizeof(struct rtgenmsg))		return ((struct rtgenmsg *) nlmsg_data(nlh))->rtgen_family;	else		return AF_UNSPEC;} /** *	struct rtnl_link_ops - rtnetlink link operations * *	@list: Used internally *	@kind: Identifier *	@maxtype: Highest device specific netlink attribute number *	@policy: Netlink policy for device specific attribute validation *	@validate: Optional validation function for netlink/changelink parameters *	@priv_size: sizeof net_device private space *	@setup: net_device setup function *	@newlink: Function for configuring and registering a new device *	@changelink: Function for changing parameters of an existing device *	@dellink: Function to remove a device *	@get_size: Function to calculate required room for dumping device *		   specific netlink attributes *	@fill_info: Function to dump device specific netlink attributes *	@get_xstats_size: Function to calculate required room for dumping devic *			  specific statistics *	@fill_xstats: Function to dump device specific statistics */struct rtnl_link_ops {	struct list_head	list; 	const char		*kind; 	size_t			priv_size;	void			(*setup)(struct net_device *dev); 	int			maxtype;	const struct nla_policy	*policy;	int			(*validate)(struct nlattr *tb[],					    struct nlattr *data[]); 	int			(*newlink)(struct net_device *dev,					   struct nlattr *tb[],					   struct nlattr *data[]);	int			(*changelink)(struct net_device *dev,					      struct nlattr *tb[],					      struct nlattr *data[]);	void			(*dellink)(struct net_device *dev); 	size_t			(*get_size)(const struct net_device *dev);	int			(*fill_info)(struct sk_buff *skb,					     const struct net_device *dev); 	size_t			(*get_xstats_size)(const struct net_device *dev);	int			(*fill_xstats)(struct sk_buff *skb,					       const struct net_device *dev);}; extern int	__rtnl_link_register(struct rtnl_link_ops *ops);extern void	__rtnl_link_unregister(struct rtnl_link_ops *ops);extern void	rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops); extern int	rtnl_link_register(struct rtnl_link_ops *ops);extern void	rtnl_link_unregister(struct rtnl_link_ops *ops); extern struct net_device *rtnl_create_link(struct net *net, char *ifname,		const struct rtnl_link_ops *ops, struct nlattr *tb[]);extern const struct nla_policy ifla_policy[IFLA_MAX+1]; #define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind) #endif