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-rw-r--r--src/include/libnetlink.h163
1 files changed, 163 insertions, 0 deletions
diff --git a/src/include/libnetlink.h b/src/include/libnetlink.h
new file mode 100644
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+++ b/src/include/libnetlink.h
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1/* file extracted from iproute2 software package
2 *
3 * Original source code:
4 *
5 * Information:
6 * http://www.linuxfoundation.org/collaborate/workgroups/networking/iproute2
7 *
8 * Download:
9 * http://www.kernel.org/pub/linux/utils/net/iproute2/
10 *
11 * Repository:
12 * git://git.kernel.org/pub/scm/linux/kernel/git/shemminger/iproute2.git
13 *
14 * License: GPL v2
15 */
16
17
18#ifndef __LIBNETLINK_H__
19#define __LIBNETLINK_H__ 1
20
21#define _GNU_SOURCE
22#include <stdio.h>
23#include <stdlib.h>
24#include <stdint.h>
25#include <string.h>
26#include <asm/types.h>
27#include <linux/netlink.h>
28#include <linux/rtnetlink.h>
29#include <linux/if_link.h>
30#include <linux/if_addr.h>
31#include <linux/neighbour.h>
32
33struct rtnl_handle
34{
35 int fd;
36 struct sockaddr_nl local;
37 struct sockaddr_nl peer;
38 __u32 seq;
39 __u32 dump;
40};
41
42extern int rcvbuf;
43
44extern int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions);
45extern int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions, int protocol);
46extern void rtnl_close(struct rtnl_handle *rth);
47extern int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type);
48extern int rtnl_wilddump_req_filter(struct rtnl_handle *rth, int fam, int type,
49 __u32 filt_mask);
50extern int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len);
51
52typedef int (*rtnl_filter_t)(const struct sockaddr_nl *,
53 struct nlmsghdr *n, void *);
54
55struct rtnl_dump_filter_arg
56{
57 rtnl_filter_t filter;
58 void *arg1;
59};
60
61extern int rtnl_dump_filter_l(struct rtnl_handle *rth,
62 const struct rtnl_dump_filter_arg *arg);
63extern int rtnl_dump_filter(struct rtnl_handle *rth, rtnl_filter_t filter,
64 void *arg);
65extern int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
66 unsigned groups, struct nlmsghdr *answer);
67extern int rtnl_send(struct rtnl_handle *rth, const void *buf, int);
68extern int rtnl_send_check(struct rtnl_handle *rth, const void *buf, int);
69
70extern int addattr(struct nlmsghdr *n, int maxlen, int type);
71extern int addattr8(struct nlmsghdr *n, int maxlen, int type, __u8 data);
72extern int addattr16(struct nlmsghdr *n, int maxlen, int type, __u16 data);
73extern int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data);
74extern int addattr64(struct nlmsghdr *n, int maxlen, int type, __u64 data);
75extern int addattrstrz(struct nlmsghdr *n, int maxlen, int type, const char *data);
76
77extern int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data, int alen);
78extern int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len);
79extern struct rtattr *addattr_nest(struct nlmsghdr *n, int maxlen, int type);
80extern int addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest);
81extern struct rtattr *addattr_nest_compat(struct nlmsghdr *n, int maxlen, int type, const void *data, int len);
82extern int addattr_nest_compat_end(struct nlmsghdr *n, struct rtattr *nest);
83extern int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data);
84extern int rta_addattr_l(struct rtattr *rta, int maxlen, int type, const void *data, int alen);
85
86extern int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len);
87extern int parse_rtattr_flags(struct rtattr *tb[], int max, struct rtattr *rta,
88 int len, unsigned short flags);
89extern int parse_rtattr_byindex(struct rtattr *tb[], int max, struct rtattr *rta, int len);
90extern int __parse_rtattr_nested_compat(struct rtattr *tb[], int max, struct rtattr *rta, int len);
91
92#define parse_rtattr_nested(tb, max, rta) \
93 (parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta)))
94
95#define parse_rtattr_nested_compat(tb, max, rta, data, len) \
96 ({ data = RTA_PAYLOAD(rta) >= len ? RTA_DATA(rta) : NULL; \
97 __parse_rtattr_nested_compat(tb, max, rta, len); })
98
99static inline __u8 rta_getattr_u8(const struct rtattr *rta)
100{
101 return *(__u8 *)RTA_DATA(rta);
102}
103static inline __u16 rta_getattr_u16(const struct rtattr *rta)
104{
105 return *(__u16 *)RTA_DATA(rta);
106}
107static inline __u32 rta_getattr_u32(const struct rtattr *rta)
108{
109 return *(__u32 *)RTA_DATA(rta);
110}
111static inline __u64 rta_getattr_u64(const struct rtattr *rta)
112{
113 __u64 tmp;
114 memcpy(&tmp, RTA_DATA(rta), sizeof(__u64));
115 return tmp;
116}
117static inline const char *rta_getattr_str(const struct rtattr *rta)
118{
119 return (const char *)RTA_DATA(rta);
120}
121
122extern int rtnl_listen(struct rtnl_handle *, rtnl_filter_t handler,
123 void *jarg);
124extern int rtnl_from_file(FILE *, rtnl_filter_t handler,
125 void *jarg);
126
127#define NLMSG_TAIL(nmsg) \
128 ((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
129
130#ifndef IFA_RTA
131#define IFA_RTA(r) \
132 ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
133#endif
134#ifndef IFA_PAYLOAD
135#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg))
136#endif
137
138#ifndef IFLA_RTA
139#define IFLA_RTA(r) \
140 ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg))))
141#endif
142#ifndef IFLA_PAYLOAD
143#define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg))
144#endif
145
146#ifndef NDA_RTA
147#define NDA_RTA(r) \
148 ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg))))
149#endif
150#ifndef NDA_PAYLOAD
151#define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndmsg))
152#endif
153
154#ifndef NDTA_RTA
155#define NDTA_RTA(r) \
156 ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndtmsg))))
157#endif
158#ifndef NDTA_PAYLOAD
159#define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndtmsg))
160#endif
161
162#endif /* __LIBNETLINK_H__ */
163
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