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Commit | Line | Data |
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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; | |
8a4025f6 | 21 | int proto; |
486ccd99 | 22 | FILE *dump_fp; |
aba5acdf SH |
23 | }; |
24 | ||
7f03191f PM |
25 | extern int rcvbuf; |
26 | ||
d2468da0 SH |
27 | extern int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions) |
28 | __attribute__((warn_unused_result)); | |
29 | ||
30 | extern int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions, | |
31 | int protocol) | |
32 | __attribute__((warn_unused_result)); | |
33 | ||
aba5acdf | 34 | extern void rtnl_close(struct rtnl_handle *rth); |
d2468da0 SH |
35 | extern int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type) |
36 | __attribute__((warn_unused_result)); | |
9eff0e5c | 37 | extern int rtnl_wilddump_req_filter(struct rtnl_handle *rth, int fam, int type, |
d2468da0 SH |
38 | __u32 filt_mask) |
39 | __attribute__((warn_unused_result)); | |
40 | extern int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, | |
41 | int len) | |
42 | __attribute__((warn_unused_result)); | |
6dc9f016 | 43 | |
ae665a52 | 44 | typedef int (*rtnl_filter_t)(const struct sockaddr_nl *, |
50772dc5 | 45 | struct nlmsghdr *n, void *); |
b49240ec SH |
46 | |
47 | struct rtnl_dump_filter_arg | |
48 | { | |
49 | rtnl_filter_t filter; | |
50 | void *arg1; | |
b49240ec SH |
51 | }; |
52 | ||
53 | extern int rtnl_dump_filter_l(struct rtnl_handle *rth, | |
54 | const struct rtnl_dump_filter_arg *arg); | |
6dc9f016 | 55 | extern int rtnl_dump_filter(struct rtnl_handle *rth, rtnl_filter_t filter, |
cd70f3f5 | 56 | void *arg); |
c079e121 SH |
57 | extern int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, |
58 | struct nlmsghdr *answer, size_t len) | |
d2468da0 SH |
59 | __attribute__((warn_unused_result)); |
60 | extern int rtnl_send(struct rtnl_handle *rth, const void *buf, int) | |
61 | __attribute__((warn_unused_result)); | |
62 | extern int rtnl_send_check(struct rtnl_handle *rth, const void *buf, int) | |
63 | __attribute__((warn_unused_result)); | |
aba5acdf | 64 | |
2aa3dd29 SH |
65 | extern int addattr(struct nlmsghdr *n, int maxlen, int type); |
66 | extern int addattr8(struct nlmsghdr *n, int maxlen, int type, __u8 data); | |
67 | extern int addattr16(struct nlmsghdr *n, int maxlen, int type, __u16 data); | |
aba5acdf | 68 | extern int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data); |
2aa3dd29 SH |
69 | extern int addattr64(struct nlmsghdr *n, int maxlen, int type, __u64 data); |
70 | extern int addattrstrz(struct nlmsghdr *n, int maxlen, int type, const char *data); | |
71 | ||
6dc9f016 | 72 | extern int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data, int alen); |
a10ab08b | 73 | extern int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len); |
2f90c9c0 PM |
74 | extern struct rtattr *addattr_nest(struct nlmsghdr *n, int maxlen, int type); |
75 | extern int addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest); | |
76 | extern struct rtattr *addattr_nest_compat(struct nlmsghdr *n, int maxlen, int type, const void *data, int len); | |
77 | extern int addattr_nest_compat_end(struct nlmsghdr *n, struct rtattr *nest); | |
aba5acdf | 78 | extern int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data); |
6dc9f016 | 79 | extern int rta_addattr_l(struct rtattr *rta, int maxlen, int type, const void *data, int alen); |
aba5acdf SH |
80 | |
81 | extern int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len); | |
b1b7ce0f VY |
82 | extern int parse_rtattr_flags(struct rtattr *tb[], int max, struct rtattr *rta, |
83 | int len, unsigned short flags); | |
c7699875 | 84 | extern int parse_rtattr_byindex(struct rtattr *tb[], int max, struct rtattr *rta, int len); |
decbb437 | 85 | extern struct rtattr *parse_rtattr_one(int type, struct rtattr *rta, int len); |
2f90c9c0 | 86 | extern int __parse_rtattr_nested_compat(struct rtattr *tb[], int max, struct rtattr *rta, int len); |
aba5acdf | 87 | |
753fca4f | 88 | #define parse_rtattr_nested(tb, max, rta) \ |
89 | (parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta))) | |
90 | ||
decbb437 JP |
91 | #define parse_rtattr_one_nested(type, rta) \ |
92 | (parse_rtattr_one(type, RTA_DATA(rta), RTA_PAYLOAD(rta))) | |
93 | ||
2f90c9c0 | 94 | #define parse_rtattr_nested_compat(tb, max, rta, data, len) \ |
cd70f3f5 SH |
95 | ({ data = RTA_PAYLOAD(rta) >= len ? RTA_DATA(rta) : NULL; \ |
96 | __parse_rtattr_nested_compat(tb, max, rta, len); }) | |
2f90c9c0 | 97 | |
7dd03712 SH |
98 | static inline __u8 rta_getattr_u8(const struct rtattr *rta) |
99 | { | |
100 | return *(__u8 *)RTA_DATA(rta); | |
101 | } | |
46c5d64d SH |
102 | static inline __u16 rta_getattr_u16(const struct rtattr *rta) |
103 | { | |
104 | return *(__u16 *)RTA_DATA(rta); | |
105 | } | |
7dd03712 | 106 | static inline __u32 rta_getattr_u32(const struct rtattr *rta) |
46c5d64d SH |
107 | { |
108 | return *(__u32 *)RTA_DATA(rta); | |
109 | } | |
110 | static inline __u64 rta_getattr_u64(const struct rtattr *rta) | |
111 | { | |
112 | __u64 tmp; | |
113 | memcpy(&tmp, RTA_DATA(rta), sizeof(__u64)); | |
114 | return tmp; | |
115 | } | |
116 | static inline const char *rta_getattr_str(const struct rtattr *rta) | |
117 | { | |
cfd2cbd1 | 118 | return (const char *)RTA_DATA(rta); |
46c5d64d SH |
119 | } |
120 | ||
ae665a52 | 121 | extern int rtnl_listen(struct rtnl_handle *, rtnl_filter_t handler, |
aba5acdf | 122 | void *jarg); |
6dc9f016 | 123 | extern int rtnl_from_file(FILE *, rtnl_filter_t handler, |
aba5acdf SH |
124 | void *jarg); |
125 | ||
370d67ba | 126 | #define NLMSG_TAIL(nmsg) \ |
127 | ((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len))) | |
128 | ||
ead2ba70 SH |
129 | #ifndef IFA_RTA |
130 | #define IFA_RTA(r) \ | |
131 | ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg)))) | |
132 | #endif | |
133 | #ifndef IFA_PAYLOAD | |
134 | #define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg)) | |
135 | #endif | |
136 | ||
137 | #ifndef IFLA_RTA | |
138 | #define IFLA_RTA(r) \ | |
139 | ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg)))) | |
140 | #endif | |
141 | #ifndef IFLA_PAYLOAD | |
142 | #define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg)) | |
143 | #endif | |
144 | ||
145 | #ifndef NDA_RTA | |
146 | #define NDA_RTA(r) \ | |
147 | ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg)))) | |
148 | #endif | |
149 | #ifndef NDA_PAYLOAD | |
150 | #define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndmsg)) | |
151 | #endif | |
152 | ||
153 | #ifndef NDTA_RTA | |
154 | #define NDTA_RTA(r) \ | |
155 | ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndtmsg)))) | |
156 | #endif | |
157 | #ifndef NDTA_PAYLOAD | |
158 | #define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndtmsg)) | |
159 | #endif | |
160 | ||
d182ee13 ND |
161 | #ifndef NETNS_RTA |
162 | #define NETNS_RTA(r) \ | |
163 | ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtgenmsg)))) | |
164 | #endif | |
165 | #ifndef NETNS_PAYLOAD | |
166 | #define NETNS_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtgenmsg)) | |
167 | #endif | |
168 | ||
27b14f2e VK |
169 | /* User defined nlmsg_type which is used mostly for logging netlink |
170 | * messages from dump file */ | |
171 | #define NLMSG_TSTAMP 15 | |
172 | ||
aba5acdf SH |
173 | #endif /* __LIBNETLINK_H__ */ |
174 |