1 #ifndef __NET_RTNETLINK_H
2 #define __NET_RTNETLINK_H
3
4 #include <linux/rtnetlink.h>
5 #include <net/netlink.h>
6
7 typedef int (*rtnl_doit_func)(struct sk_buff *, struct nlmsghdr *, void *);
8 typedef int (*rtnl_dumpit_func)(struct sk_buff *, struct netlink_callback *);
9
10 extern int __rtnl_register(int protocol, int msgtype,
11 rtnl_doit_func, rtnl_dumpit_func);
12 extern void rtnl_register(int protocol, int msgtype,
13 rtnl_doit_func, rtnl_dumpit_func);
14 extern int rtnl_unregister(int protocol, int msgtype);
15 extern void rtnl_unregister_all(int protocol);
16
17 static inline int rtnl_msg_family(struct nlmsghdr *nlh)
18 {
19 if (nlmsg_len(nlh) >= sizeof(struct rtgenmsg))
20 return ((struct rtgenmsg *) nlmsg_data(nlh))->rtgen_family;
21 else
22 return AF_UNSPEC;
23 }
24
25 /**
26 * struct rtnl_link_ops - rtnetlink link operations
27 *
28 * @list: Used internally
29 * @kind: Identifier
30 * @maxtype: Highest device specific netlink attribute number
31 * @policy: Netlink policy for device specific attribute validation
32 * @validate: Optional validation function for netlink/changelink parameters
33 * @priv_size: sizeof net_device private space
34 * @setup: net_device setup function
35 * @newlink: Function for configuring and registering a new device
36 * @changelink: Function for changing parameters of an existing device
37 * @dellink: Function to remove a device
38 * @get_size: Function to calculate required room for dumping device
39 * specific netlink attributes
40 * @fill_info: Function to dump device specific netlink attributes
41 * @get_xstats_size: Function to calculate required room for dumping devic
42 * specific statistics
43 * @fill_xstats: Function to dump device specific statistics
44 */
45 struct rtnl_link_ops {
46 struct list_head list;
47
48 const char *kind;
49
50 size_t priv_size;
51 void (*setup)(struct net_device *dev);
52
53 int maxtype;
54 const struct nla_policy *policy;
55 int (*validate)(struct nlattr *tb[],
56 struct nlattr *data[]);
57
58 int (*newlink)(struct net_device *dev,
59 struct nlattr *tb[],
60 struct nlattr *data[]);
61 int (*changelink)(struct net_device *dev,
62 struct nlattr *tb[],
63 struct nlattr *data[]);
64 void (*dellink)(struct net_device *dev);
65
66 size_t (*get_size)(const struct net_device *dev);
67 int (*fill_info)(struct sk_buff *skb,
68 const struct net_device *dev);
69
70 size_t (*get_xstats_size)(const struct net_device *dev);
71 int (*fill_xstats)(struct sk_buff *skb,
72 const struct net_device *dev);
73 };
74
75 extern int __rtnl_link_register(struct rtnl_link_ops *ops);
76 extern void __rtnl_link_unregister(struct rtnl_link_ops *ops);
77
78 extern int rtnl_link_register(struct rtnl_link_ops *ops);
79 extern void rtnl_link_unregister(struct rtnl_link_ops *ops);
80
81 extern struct net_device *rtnl_create_link(struct net *net, char *ifname,
82 const struct rtnl_link_ops *ops, struct nlattr *tb[]);
83 extern const struct nla_policy ifla_policy[IFLA_MAX+1];
84
85 #define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind)
86
87 #endif
88
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