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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
Thomas Graf661d2962013-03-21 07:45:29 +00007typedef int (*rtnl_doit_func)(struct sk_buff *, struct nlmsghdr *);
Thomas Grafe2849862007-03-22 11:48:11 -07008typedef 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
Jiri Pirkod40156a2012-07-20 02:28:47 +000047 * @get_num_tx_queues: Function to determine number of transmit queues
48 * to create when creating a new device.
49 * @get_num_rx_queues: Function to determine number of receive queues
50 * to create when creating a new device.
Patrick McHardy38f7b872007-06-13 12:03:51 -070051 */
52struct rtnl_link_ops {
53 struct list_head list;
54
55 const char *kind;
56
57 size_t priv_size;
58 void (*setup)(struct net_device *dev);
59
60 int maxtype;
61 const struct nla_policy *policy;
62 int (*validate)(struct nlattr *tb[],
63 struct nlattr *data[]);
64
Eric W. Biederman81adee42009-11-08 00:53:51 -080065 int (*newlink)(struct net *src_net,
66 struct net_device *dev,
Patrick McHardy38f7b872007-06-13 12:03:51 -070067 struct nlattr *tb[],
68 struct nlattr *data[]);
69 int (*changelink)(struct net_device *dev,
70 struct nlattr *tb[],
71 struct nlattr *data[]);
Eric Dumazet23289a32009-10-27 07:06:36 +000072 void (*dellink)(struct net_device *dev,
73 struct list_head *head);
Patrick McHardy38f7b872007-06-13 12:03:51 -070074
75 size_t (*get_size)(const struct net_device *dev);
76 int (*fill_info)(struct sk_buff *skb,
77 const struct net_device *dev);
78
79 size_t (*get_xstats_size)(const struct net_device *dev);
80 int (*fill_xstats)(struct sk_buff *skb,
81 const struct net_device *dev);
Jiri Pirkod40156a2012-07-20 02:28:47 +000082 unsigned int (*get_num_tx_queues)(void);
83 unsigned int (*get_num_rx_queues)(void);
Patrick McHardy38f7b872007-06-13 12:03:51 -070084};
85
86extern int __rtnl_link_register(struct rtnl_link_ops *ops);
87extern void __rtnl_link_unregister(struct rtnl_link_ops *ops);
88
89extern int rtnl_link_register(struct rtnl_link_ops *ops);
90extern void rtnl_link_unregister(struct rtnl_link_ops *ops);
91
Thomas Graff8ff1822010-11-16 04:30:14 +000092/**
93 * struct rtnl_af_ops - rtnetlink address family operations
94 *
95 * @list: Used internally
96 * @family: Address family
97 * @fill_link_af: Function to fill IFLA_AF_SPEC with address family
98 * specific netlink attributes.
99 * @get_link_af_size: Function to calculate size of address family specific
stephen hemminger9b178762012-04-10 18:32:59 +0000100 * netlink attributes.
Thomas Grafcf7afbf2010-11-22 01:31:54 +0000101 * @validate_link_af: Validate a IFLA_AF_SPEC attribute, must check attr
102 * for invalid configuration settings.
103 * @set_link_af: Function to parse a IFLA_AF_SPEC attribute and modify
104 * net_device accordingly.
Thomas Graff8ff1822010-11-16 04:30:14 +0000105 */
106struct rtnl_af_ops {
107 struct list_head list;
108 int family;
109
110 int (*fill_link_af)(struct sk_buff *skb,
111 const struct net_device *dev);
112 size_t (*get_link_af_size)(const struct net_device *dev);
113
Thomas Grafcf7afbf2010-11-22 01:31:54 +0000114 int (*validate_link_af)(const struct net_device *dev,
115 const struct nlattr *attr);
116 int (*set_link_af)(struct net_device *dev,
117 const struct nlattr *attr);
Thomas Graff8ff1822010-11-16 04:30:14 +0000118};
119
120extern int __rtnl_af_register(struct rtnl_af_ops *ops);
121extern void __rtnl_af_unregister(struct rtnl_af_ops *ops);
122
123extern int rtnl_af_register(struct rtnl_af_ops *ops);
124extern void rtnl_af_unregister(struct rtnl_af_ops *ops);
125
126
Eric W. Biederman81adee42009-11-08 00:53:51 -0800127extern struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]);
Rami Rosenc0713562012-11-30 01:08:47 +0000128extern struct net_device *rtnl_create_link(struct net *net,
Eric W. Biederman81adee42009-11-08 00:53:51 -0800129 char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[]);
Patrick McHardy3729d502010-02-26 06:34:54 +0000130extern int rtnl_configure_link(struct net_device *dev,
131 const struct ifinfomsg *ifm);
Pavel Emelianove7199282007-08-08 22:16:38 -0700132extern const struct nla_policy ifla_policy[IFLA_MAX+1];
133
Patrick McHardy38f7b872007-06-13 12:03:51 -0700134#define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind)
135
Thomas Grafe2849862007-03-22 11:48:11 -0700136#endif