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192.168.1.100 / T106_DC / ffc32e98aa3647254a049557cdc58333ffec1adf / . / ap / app / iproute2 / iproute2-3.4.0 / include / libnetlink.h
blob: 81649afe5a1421af8d54e8313a811e136c0ecd49 [file] [log] [blame]
lh9ed821d2023-04-07 01:36:19 -0700[diff] [blame]1#ifndef __LIBNETLINK_H__
2#define __LIBNETLINK_H__ 1
3
4#include <string.h>
5#include <asm/types.h>
6#include <linux/netlink.h>
7#include <linux/rtnetlink.h>
8#include <linux/if_link.h>
9#include <linux/if_addr.h>
10#include <linux/neighbour.h>
11
12struct rtnl_handle
13{
14 int fd;
15 struct sockaddr_nl local;
16 struct sockaddr_nl peer;
17 __u32 seq;
18 __u32 dump;
19};
20
21extern int rcvbuf;
22
23extern int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions);
24extern int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions, int protocol);
25extern void rtnl_close(struct rtnl_handle *rth);
26extern int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type);
27extern int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len);
28
29typedef int (*rtnl_filter_t)(const struct sockaddr_nl *,
30 struct nlmsghdr *n, void *);
31
32struct rtnl_dump_filter_arg
33{
34 rtnl_filter_t filter;
35 void *arg1;
36};
37
38extern int rtnl_dump_filter_l(struct rtnl_handle *rth,
39 const struct rtnl_dump_filter_arg *arg);
40extern int rtnl_dump_filter(struct rtnl_handle *rth, rtnl_filter_t filter,
41 void *arg);
42extern int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
43 unsigned groups, struct nlmsghdr *answer);
44extern int rtnl_send(struct rtnl_handle *rth, const void *buf, int);
45extern int rtnl_send_check(struct rtnl_handle *rth, const void *buf, int);
46
47extern int addattr(struct nlmsghdr *n, int maxlen, int type);
48extern int addattr8(struct nlmsghdr *n, int maxlen, int type, __u8 data);
49extern int addattr16(struct nlmsghdr *n, int maxlen, int type, __u16 data);
50extern int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data);
51extern int addattr64(struct nlmsghdr *n, int maxlen, int type, __u64 data);
52extern int addattrstrz(struct nlmsghdr *n, int maxlen, int type, const char *data);
53
54extern int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data, int alen);
55extern int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len);
56extern struct rtattr *addattr_nest(struct nlmsghdr *n, int maxlen, int type);
57extern int addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest);
58extern struct rtattr *addattr_nest_compat(struct nlmsghdr *n, int maxlen, int type, const void *data, int len);
59extern int addattr_nest_compat_end(struct nlmsghdr *n, struct rtattr *nest);
60extern int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data);
61extern int rta_addattr_l(struct rtattr *rta, int maxlen, int type, const void *data, int alen);
62
63extern int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len);
64extern int parse_rtattr_byindex(struct rtattr *tb[], int max, struct rtattr *rta, int len);
65extern int __parse_rtattr_nested_compat(struct rtattr *tb[], int max, struct rtattr *rta, int len);
66
67#define parse_rtattr_nested(tb, max, rta) \
68 (parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta)))
69
70#define parse_rtattr_nested_compat(tb, max, rta, data, len) \
71 ({ data = RTA_PAYLOAD(rta) >= len ? RTA_DATA(rta) : NULL; \
72 __parse_rtattr_nested_compat(tb, max, rta, len); })
73
74static inline __u8 rta_getattr_u8(const struct rtattr *rta)
75{
76 return *(__u8 *)RTA_DATA(rta);
77}
78static inline __u16 rta_getattr_u16(const struct rtattr *rta)
79{
80 return *(__u16 *)RTA_DATA(rta);
81}
82static inline __u32 rta_getattr_u32(const struct rtattr *rta)
83{
84 return *(__u32 *)RTA_DATA(rta);
85}
86static inline __u64 rta_getattr_u64(const struct rtattr *rta)
87{
88 __u64 tmp;
89 memcpy(&tmp, RTA_DATA(rta), sizeof(__u64));
90 return tmp;
91}
92static inline const char *rta_getattr_str(const struct rtattr *rta)
93{
94 return (const char *)RTA_DATA(rta);
95}
96
97extern int rtnl_listen(struct rtnl_handle *, rtnl_filter_t handler,
98 void *jarg);
99extern int rtnl_from_file(FILE *, rtnl_filter_t handler,
100 void *jarg);
101
102#define NLMSG_TAIL(nmsg) \
103 ((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
104
105#ifndef IFA_RTA
106#define IFA_RTA(r) \
107 ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
108#endif
109#ifndef IFA_PAYLOAD
110#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg))
111#endif
112
113#ifndef IFLA_RTA
114#define IFLA_RTA(r) \
115 ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg))))
116#endif
117#ifndef IFLA_PAYLOAD
118#define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg))
119#endif
120
121#ifndef NDA_RTA
122#define NDA_RTA(r) \
123 ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg))))
124#endif
125#ifndef NDA_PAYLOAD
126#define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndmsg))
127#endif
128
129#ifndef NDTA_RTA
130#define NDTA_RTA(r) \
131 ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndtmsg))))
132#endif
133#ifndef NDTA_PAYLOAD
134#define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndtmsg))
135#endif
136
137#endif /* __LIBNETLINK_H__ */
138