Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#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 *);
9
10extern int __rtnl_register(int protocol, int msgtype,
11 rtnl_doit_func, rtnl_dumpit_func);
12extern void rtnl_register(int protocol, int msgtype,
13 rtnl_doit_func, rtnl_dumpit_func);
14extern int rtnl_unregister(int protocol, int msgtype);
15extern void rtnl_unregister_all(int protocol);
16
17static inline int rtnl_msg_family(const 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 */
45struct 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 *src_net,
59 struct net_device *dev,
60 struct nlattr *tb[],
61 struct nlattr *data[]);
62 int (*changelink)(struct net_device *dev,
63 struct nlattr *tb[],
64 struct nlattr *data[]);
65 void (*dellink)(struct net_device *dev,
66 struct list_head *head);
67
68 size_t (*get_size)(const struct net_device *dev);
69 int (*fill_info)(struct sk_buff *skb,
70 const struct net_device *dev);
71
72 size_t (*get_xstats_size)(const struct net_device *dev);
73 int (*fill_xstats)(struct sk_buff *skb,
74 const struct net_device *dev);
75 int (*get_tx_queues)(struct net *net, struct nlattr *tb[],
76 unsigned int *tx_queues,
77 unsigned int *real_tx_queues);
78};
79
80extern int __rtnl_link_register(struct rtnl_link_ops *ops);
81extern void __rtnl_link_unregister(struct rtnl_link_ops *ops);
82
83extern int rtnl_link_register(struct rtnl_link_ops *ops);
84extern void rtnl_link_unregister(struct rtnl_link_ops *ops);
85
86/**
87 * struct rtnl_af_ops - rtnetlink address family operations
88 *
89 * @list: Used internally
90 * @family: Address family
91 * @fill_link_af: Function to fill IFLA_AF_SPEC with address family
92 * specific netlink attributes.
93 * @get_link_af_size: Function to calculate size of address family specific
94 * netlink attributes exlusive the container attribute.
95 * @validate_link_af: Validate a IFLA_AF_SPEC attribute, must check attr
96 * for invalid configuration settings.
97 * @set_link_af: Function to parse a IFLA_AF_SPEC attribute and modify
98 * net_device accordingly.
99 */
100struct rtnl_af_ops {
101 struct list_head list;
102 int family;
103
104 int (*fill_link_af)(struct sk_buff *skb,
105 const struct net_device *dev);
106 size_t (*get_link_af_size)(const struct net_device *dev);
107
108 int (*validate_link_af)(const struct net_device *dev,
109 const struct nlattr *attr);
110 int (*set_link_af)(struct net_device *dev,
111 const struct nlattr *attr);
112};
113
114extern int __rtnl_af_register(struct rtnl_af_ops *ops);
115extern void __rtnl_af_unregister(struct rtnl_af_ops *ops);
116
117extern int rtnl_af_register(struct rtnl_af_ops *ops);
118extern void rtnl_af_unregister(struct rtnl_af_ops *ops);
119
120
121extern struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]);
122extern struct net_device *rtnl_create_link(struct net *src_net, struct net *net,
123 char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[]);
124extern int rtnl_configure_link(struct net_device *dev,
125 const struct ifinfomsg *ifm);
126extern const struct nla_policy ifla_policy[IFLA_MAX+1];
127
128#define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind)
129
130#endif