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Thomas Grafe2849862007-03-22 11:48:11 -07001#ifndef __NET_RTNETLINK_H
2#define __NET_RTNETLINK_H
3
4#include <linux/rtnetlink.h>
5#include <net/netlink.h>
6
7typedef int (*rtnl_doit_func)(struct sk_buff *, struct nlmsghdr *, void *);
8typedef int (*rtnl_dumpit_func)(struct sk_buff *, struct netlink_callback *);
Greg Rose115c9b82012-02-21 16:54:48 -05009typedef u16 (*rtnl_calcit_func)(struct sk_buff *, struct nlmsghdr *);
Thomas Grafe2849862007-03-22 11:48:11 -070010
11extern int __rtnl_register(int protocol, int msgtype,
Greg Rosec7ac8672011-06-10 01:27:09 +000012 rtnl_doit_func, rtnl_dumpit_func,
13 rtnl_calcit_func);
Thomas Grafe2849862007-03-22 11:48:11 -070014extern void rtnl_register(int protocol, int msgtype,
Greg Rosec7ac8672011-06-10 01:27:09 +000015 rtnl_doit_func, rtnl_dumpit_func,
16 rtnl_calcit_func);
Thomas Grafe2849862007-03-22 11:48:11 -070017extern int rtnl_unregister(int protocol, int msgtype);
18extern void rtnl_unregister_all(int protocol);
Thomas Grafe2849862007-03-22 11:48:11 -070019
Patrick McHardy3a6c2b42009-08-25 16:07:40 +020020static inline int rtnl_msg_family(const struct nlmsghdr *nlh)
Thomas Grafc4546732007-03-25 23:24:24 -070021{
22 if (nlmsg_len(nlh) >= sizeof(struct rtgenmsg))
23 return ((struct rtgenmsg *) nlmsg_data(nlh))->rtgen_family;
24 else
25 return AF_UNSPEC;
26}
27
Patrick McHardy38f7b872007-06-13 12:03:51 -070028/**
29 * struct rtnl_link_ops - rtnetlink link operations
30 *
31 * @list: Used internally
32 * @kind: Identifier
33 * @maxtype: Highest device specific netlink attribute number
34 * @policy: Netlink policy for device specific attribute validation
35 * @validate: Optional validation function for netlink/changelink parameters
36 * @priv_size: sizeof net_device private space
37 * @setup: net_device setup function
38 * @newlink: Function for configuring and registering a new device
39 * @changelink: Function for changing parameters of an existing device
40 * @dellink: Function to remove a device
41 * @get_size: Function to calculate required room for dumping device
42 * specific netlink attributes
43 * @fill_info: Function to dump device specific netlink attributes
stephen hemminger9b178762012-04-10 18:32:59 +000044 * @get_xstats_size: Function to calculate required room for dumping device
Patrick McHardy38f7b872007-06-13 12:03:51 -070045 * specific statistics
46 * @fill_xstats: Function to dump device specific statistics
stephen hemminger9b178762012-04-10 18:32:59 +000047 * @get_tx_queues: Function to determine number of transmit queues to create when
48 * creating a new device.
Patrick McHardy38f7b872007-06-13 12:03:51 -070049 */
50struct rtnl_link_ops {
51 struct list_head list;
52
53 const char *kind;
54
55 size_t priv_size;
56 void (*setup)(struct net_device *dev);
57
58 int maxtype;
59 const struct nla_policy *policy;
60 int (*validate)(struct nlattr *tb[],
61 struct nlattr *data[]);
62
Eric W. Biederman81adee42009-11-08 00:53:51 -080063 int (*newlink)(struct net *src_net,
64 struct net_device *dev,
Patrick McHardy38f7b872007-06-13 12:03:51 -070065 struct nlattr *tb[],
66 struct nlattr *data[]);
67 int (*changelink)(struct net_device *dev,
68 struct nlattr *tb[],
69 struct nlattr *data[]);
Eric Dumazet23289a32009-10-27 07:06:36 +000070 void (*dellink)(struct net_device *dev,
71 struct list_head *head);
Patrick McHardy38f7b872007-06-13 12:03:51 -070072
73 size_t (*get_size)(const struct net_device *dev);
74 int (*fill_info)(struct sk_buff *skb,
75 const struct net_device *dev);
76
77 size_t (*get_xstats_size)(const struct net_device *dev);
78 int (*fill_xstats)(struct sk_buff *skb,
79 const struct net_device *dev);
stephen hemmingerefacb302012-04-10 18:34:43 +000080 int (*get_tx_queues)(struct net *net,
David S. Millerbe383952012-04-13 14:21:04 -040081 struct nlattr *tb[]);
Patrick McHardy38f7b872007-06-13 12:03:51 -070082};
83
84extern int __rtnl_link_register(struct rtnl_link_ops *ops);
85extern void __rtnl_link_unregister(struct rtnl_link_ops *ops);
86
87extern int rtnl_link_register(struct rtnl_link_ops *ops);
88extern void rtnl_link_unregister(struct rtnl_link_ops *ops);
89
Thomas Graff8ff1822010-11-16 04:30:14 +000090/**
91 * struct rtnl_af_ops - rtnetlink address family operations
92 *
93 * @list: Used internally
94 * @family: Address family
95 * @fill_link_af: Function to fill IFLA_AF_SPEC with address family
96 * specific netlink attributes.
97 * @get_link_af_size: Function to calculate size of address family specific
stephen hemminger9b178762012-04-10 18:32:59 +000098 * netlink attributes.
Thomas Grafcf7afbf2010-11-22 01:31:54 +000099 * @validate_link_af: Validate a IFLA_AF_SPEC attribute, must check attr
100 * for invalid configuration settings.
101 * @set_link_af: Function to parse a IFLA_AF_SPEC attribute and modify
102 * net_device accordingly.
Thomas Graff8ff1822010-11-16 04:30:14 +0000103 */
104struct rtnl_af_ops {
105 struct list_head list;
106 int family;
107
108 int (*fill_link_af)(struct sk_buff *skb,
109 const struct net_device *dev);
110 size_t (*get_link_af_size)(const struct net_device *dev);
111
Thomas Grafcf7afbf2010-11-22 01:31:54 +0000112 int (*validate_link_af)(const struct net_device *dev,
113 const struct nlattr *attr);
114 int (*set_link_af)(struct net_device *dev,
115 const struct nlattr *attr);
Thomas Graff8ff1822010-11-16 04:30:14 +0000116};
117
118extern int __rtnl_af_register(struct rtnl_af_ops *ops);
119extern void __rtnl_af_unregister(struct rtnl_af_ops *ops);
120
121extern int rtnl_af_register(struct rtnl_af_ops *ops);
122extern void rtnl_af_unregister(struct rtnl_af_ops *ops);
123
124
Eric W. Biederman81adee42009-11-08 00:53:51 -0800125extern struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]);
126extern struct net_device *rtnl_create_link(struct net *src_net, struct net *net,
127 char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[]);
Patrick McHardy3729d502010-02-26 06:34:54 +0000128extern int rtnl_configure_link(struct net_device *dev,
129 const struct ifinfomsg *ifm);
Pavel Emelianove7199282007-08-08 22:16:38 -0700130extern const struct nla_policy ifla_policy[IFLA_MAX+1];
131
Patrick McHardy38f7b872007-06-13 12:03:51 -0700132#define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind)
133
Thomas Grafe2849862007-03-22 11:48:11 -0700134#endif