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aba5acdf SH |
1 | #ifndef __LIBNETLINK_H__ |
2 | #define __LIBNETLINK_H__ 1 | |
3 | ||
5bd9dd49 | 4 | #include <stdio.h> |
f5b830dc | 5 | #include <string.h> |
aba5acdf SH |
6 | #include <asm/types.h> |
7 | #include <linux/netlink.h> | |
8 | #include <linux/rtnetlink.h> | |
ead2ba70 SH |
9 | #include <linux/if_link.h> |
10 | #include <linux/if_addr.h> | |
11 | #include <linux/neighbour.h> | |
9d0efc10 | 12 | #include <linux/netconf.h> |
aba5acdf SH |
13 | |
14 | struct rtnl_handle | |
15 | { | |
16 | int fd; | |
17 | struct sockaddr_nl local; | |
18 | struct sockaddr_nl peer; | |
19 | __u32 seq; | |
20 | __u32 dump; | |
21 | }; | |
22 | ||
7f03191f PM |
23 | extern int rcvbuf; |
24 | ||
aba5acdf | 25 | extern int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions); |
c7699875 | 26 | extern int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions, int protocol); |
aba5acdf SH |
27 | extern void rtnl_close(struct rtnl_handle *rth); |
28 | extern int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type); | |
29 | extern int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len); | |
6dc9f016 | 30 | |
ae665a52 | 31 | typedef int (*rtnl_filter_t)(const struct sockaddr_nl *, |
50772dc5 | 32 | struct nlmsghdr *n, void *); |
b49240ec SH |
33 | |
34 | struct rtnl_dump_filter_arg | |
35 | { | |
36 | rtnl_filter_t filter; | |
37 | void *arg1; | |
b49240ec SH |
38 | }; |
39 | ||
40 | extern int rtnl_dump_filter_l(struct rtnl_handle *rth, | |
41 | const struct rtnl_dump_filter_arg *arg); | |
6dc9f016 | 42 | extern int rtnl_dump_filter(struct rtnl_handle *rth, rtnl_filter_t filter, |
cd70f3f5 | 43 | void *arg); |
aba5acdf | 44 | extern int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer, |
cd70f3f5 | 45 | unsigned groups, struct nlmsghdr *answer); |
6cf8398f SH |
46 | extern int rtnl_send(struct rtnl_handle *rth, const void *buf, int); |
47 | extern int rtnl_send_check(struct rtnl_handle *rth, const void *buf, int); | |
aba5acdf | 48 | |
2aa3dd29 SH |
49 | extern int addattr(struct nlmsghdr *n, int maxlen, int type); |
50 | extern int addattr8(struct nlmsghdr *n, int maxlen, int type, __u8 data); | |
51 | extern int addattr16(struct nlmsghdr *n, int maxlen, int type, __u16 data); | |
aba5acdf | 52 | extern int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data); |
2aa3dd29 SH |
53 | extern int addattr64(struct nlmsghdr *n, int maxlen, int type, __u64 data); |
54 | extern int addattrstrz(struct nlmsghdr *n, int maxlen, int type, const char *data); | |
55 | ||
6dc9f016 | 56 | extern int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data, int alen); |
a10ab08b | 57 | extern int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len); |
2f90c9c0 PM |
58 | extern struct rtattr *addattr_nest(struct nlmsghdr *n, int maxlen, int type); |
59 | extern int addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest); | |
60 | extern struct rtattr *addattr_nest_compat(struct nlmsghdr *n, int maxlen, int type, const void *data, int len); | |
61 | extern int addattr_nest_compat_end(struct nlmsghdr *n, struct rtattr *nest); | |
aba5acdf | 62 | extern int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data); |
6dc9f016 | 63 | extern int rta_addattr_l(struct rtattr *rta, int maxlen, int type, const void *data, int alen); |
aba5acdf SH |
64 | |
65 | extern int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len); | |
c7699875 | 66 | extern int parse_rtattr_byindex(struct rtattr *tb[], int max, struct rtattr *rta, int len); |
2f90c9c0 | 67 | extern int __parse_rtattr_nested_compat(struct rtattr *tb[], int max, struct rtattr *rta, int len); |
aba5acdf | 68 | |
753fca4f | 69 | #define parse_rtattr_nested(tb, max, rta) \ |
70 | (parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta))) | |
71 | ||
2f90c9c0 | 72 | #define parse_rtattr_nested_compat(tb, max, rta, data, len) \ |
cd70f3f5 SH |
73 | ({ data = RTA_PAYLOAD(rta) >= len ? RTA_DATA(rta) : NULL; \ |
74 | __parse_rtattr_nested_compat(tb, max, rta, len); }) | |
2f90c9c0 | 75 | |
7dd03712 SH |
76 | static inline __u8 rta_getattr_u8(const struct rtattr *rta) |
77 | { | |
78 | return *(__u8 *)RTA_DATA(rta); | |
79 | } | |
46c5d64d SH |
80 | static inline __u16 rta_getattr_u16(const struct rtattr *rta) |
81 | { | |
82 | return *(__u16 *)RTA_DATA(rta); | |
83 | } | |
7dd03712 | 84 | static inline __u32 rta_getattr_u32(const struct rtattr *rta) |
46c5d64d SH |
85 | { |
86 | return *(__u32 *)RTA_DATA(rta); | |
87 | } | |
88 | static inline __u64 rta_getattr_u64(const struct rtattr *rta) | |
89 | { | |
90 | __u64 tmp; | |
91 | memcpy(&tmp, RTA_DATA(rta), sizeof(__u64)); | |
92 | return tmp; | |
93 | } | |
94 | static inline const char *rta_getattr_str(const struct rtattr *rta) | |
95 | { | |
cfd2cbd1 | 96 | return (const char *)RTA_DATA(rta); |
46c5d64d SH |
97 | } |
98 | ||
ae665a52 | 99 | extern int rtnl_listen(struct rtnl_handle *, rtnl_filter_t handler, |
aba5acdf | 100 | void *jarg); |
6dc9f016 | 101 | extern int rtnl_from_file(FILE *, rtnl_filter_t handler, |
aba5acdf SH |
102 | void *jarg); |
103 | ||
370d67ba | 104 | #define NLMSG_TAIL(nmsg) \ |
105 | ((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len))) | |
106 | ||
ead2ba70 SH |
107 | #ifndef IFA_RTA |
108 | #define IFA_RTA(r) \ | |
109 | ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg)))) | |
110 | #endif | |
111 | #ifndef IFA_PAYLOAD | |
112 | #define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg)) | |
113 | #endif | |
114 | ||
115 | #ifndef IFLA_RTA | |
116 | #define IFLA_RTA(r) \ | |
117 | ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg)))) | |
118 | #endif | |
119 | #ifndef IFLA_PAYLOAD | |
120 | #define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg)) | |
121 | #endif | |
122 | ||
123 | #ifndef NDA_RTA | |
124 | #define NDA_RTA(r) \ | |
125 | ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg)))) | |
126 | #endif | |
127 | #ifndef NDA_PAYLOAD | |
128 | #define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndmsg)) | |
129 | #endif | |
130 | ||
131 | #ifndef NDTA_RTA | |
132 | #define NDTA_RTA(r) \ | |
133 | ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndtmsg)))) | |
134 | #endif | |
135 | #ifndef NDTA_PAYLOAD | |
136 | #define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndtmsg)) | |
137 | #endif | |
138 | ||
aba5acdf SH |
139 | #endif /* __LIBNETLINK_H__ */ |
140 |