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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; |
449b824a ND |
23 | #define RTNL_HANDLE_F_LISTEN_ALL_NSID 0x01 |
24 | int flags; | |
aba5acdf SH |
25 | }; |
26 | ||
7f03191f PM |
27 | extern int rcvbuf; |
28 | ||
892e2124 | 29 | int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions) |
d2468da0 SH |
30 | __attribute__((warn_unused_result)); |
31 | ||
892e2124 | 32 | int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions, |
d2468da0 SH |
33 | int protocol) |
34 | __attribute__((warn_unused_result)); | |
35 | ||
892e2124 SH |
36 | void rtnl_close(struct rtnl_handle *rth); |
37 | int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type) | |
d2468da0 | 38 | __attribute__((warn_unused_result)); |
892e2124 | 39 | int rtnl_wilddump_req_filter(struct rtnl_handle *rth, int fam, int type, |
d2468da0 SH |
40 | __u32 filt_mask) |
41 | __attribute__((warn_unused_result)); | |
892e2124 | 42 | int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, |
d2468da0 SH |
43 | int len) |
44 | __attribute__((warn_unused_result)); | |
6dc9f016 | 45 | |
0628cddd | 46 | struct rtnl_ctrl_data { |
449b824a | 47 | int nsid; |
0628cddd ND |
48 | }; |
49 | ||
ae665a52 | 50 | typedef int (*rtnl_filter_t)(const struct sockaddr_nl *, |
50772dc5 | 51 | struct nlmsghdr *n, void *); |
b49240ec | 52 | |
0628cddd ND |
53 | typedef int (*rtnl_listen_filter_t)(const struct sockaddr_nl *, |
54 | struct rtnl_ctrl_data *, | |
55 | struct nlmsghdr *n, void *); | |
56 | ||
b49240ec SH |
57 | struct rtnl_dump_filter_arg |
58 | { | |
59 | rtnl_filter_t filter; | |
60 | void *arg1; | |
b49240ec SH |
61 | }; |
62 | ||
892e2124 | 63 | int rtnl_dump_filter_l(struct rtnl_handle *rth, |
b49240ec | 64 | const struct rtnl_dump_filter_arg *arg); |
892e2124 SH |
65 | int rtnl_dump_filter(struct rtnl_handle *rth, rtnl_filter_t filter, void *arg); |
66 | int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, | |
67 | struct nlmsghdr *answer, size_t len) | |
d2468da0 | 68 | __attribute__((warn_unused_result)); |
892e2124 | 69 | int rtnl_send(struct rtnl_handle *rth, const void *buf, int) |
d2468da0 | 70 | __attribute__((warn_unused_result)); |
892e2124 | 71 | int rtnl_send_check(struct rtnl_handle *rth, const void *buf, int) |
d2468da0 | 72 | __attribute__((warn_unused_result)); |
aba5acdf | 73 | |
892e2124 SH |
74 | int addattr(struct nlmsghdr *n, int maxlen, int type); |
75 | int addattr8(struct nlmsghdr *n, int maxlen, int type, __u8 data); | |
76 | int addattr16(struct nlmsghdr *n, int maxlen, int type, __u16 data); | |
77 | int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data); | |
78 | int addattr64(struct nlmsghdr *n, int maxlen, int type, __u64 data); | |
79 | int addattrstrz(struct nlmsghdr *n, int maxlen, int type, const char *data); | |
80 | ||
81 | int addattr_l(struct nlmsghdr *n, int maxlen, int type, | |
82 | const void *data, int alen); | |
83 | int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len); | |
84 | struct rtattr *addattr_nest(struct nlmsghdr *n, int maxlen, int type); | |
85 | int addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest); | |
86 | struct rtattr *addattr_nest_compat(struct nlmsghdr *n, int maxlen, int type, | |
87 | const void *data, int len); | |
88 | int addattr_nest_compat_end(struct nlmsghdr *n, struct rtattr *nest); | |
89 | int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data); | |
90 | int rta_addattr_l(struct rtattr *rta, int maxlen, int type, | |
91 | const void *data, int alen); | |
92 | ||
93 | int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len); | |
94 | int parse_rtattr_flags(struct rtattr *tb[], int max, struct rtattr *rta, | |
b1b7ce0f | 95 | int len, unsigned short flags); |
892e2124 SH |
96 | int parse_rtattr_byindex(struct rtattr *tb[], int max, |
97 | struct rtattr *rta, int len); | |
98 | struct rtattr *parse_rtattr_one(int type, struct rtattr *rta, int len); | |
99 | int __parse_rtattr_nested_compat(struct rtattr *tb[], int max, struct rtattr *rta, int len); | |
aba5acdf | 100 | |
753fca4f | 101 | #define parse_rtattr_nested(tb, max, rta) \ |
102 | (parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta))) | |
103 | ||
decbb437 JP |
104 | #define parse_rtattr_one_nested(type, rta) \ |
105 | (parse_rtattr_one(type, RTA_DATA(rta), RTA_PAYLOAD(rta))) | |
106 | ||
2f90c9c0 | 107 | #define parse_rtattr_nested_compat(tb, max, rta, data, len) \ |
cd70f3f5 SH |
108 | ({ data = RTA_PAYLOAD(rta) >= len ? RTA_DATA(rta) : NULL; \ |
109 | __parse_rtattr_nested_compat(tb, max, rta, len); }) | |
2f90c9c0 | 110 | |
7dd03712 SH |
111 | static inline __u8 rta_getattr_u8(const struct rtattr *rta) |
112 | { | |
113 | return *(__u8 *)RTA_DATA(rta); | |
114 | } | |
46c5d64d SH |
115 | static inline __u16 rta_getattr_u16(const struct rtattr *rta) |
116 | { | |
117 | return *(__u16 *)RTA_DATA(rta); | |
118 | } | |
7dd03712 | 119 | static inline __u32 rta_getattr_u32(const struct rtattr *rta) |
46c5d64d SH |
120 | { |
121 | return *(__u32 *)RTA_DATA(rta); | |
122 | } | |
123 | static inline __u64 rta_getattr_u64(const struct rtattr *rta) | |
124 | { | |
125 | __u64 tmp; | |
126 | memcpy(&tmp, RTA_DATA(rta), sizeof(__u64)); | |
127 | return tmp; | |
128 | } | |
129 | static inline const char *rta_getattr_str(const struct rtattr *rta) | |
130 | { | |
cfd2cbd1 | 131 | return (const char *)RTA_DATA(rta); |
46c5d64d SH |
132 | } |
133 | ||
892e2124 SH |
134 | int rtnl_listen_all_nsid(struct rtnl_handle *); |
135 | int rtnl_listen(struct rtnl_handle *, rtnl_listen_filter_t handler, | |
136 | void *jarg); | |
137 | int rtnl_from_file(FILE *, rtnl_listen_filter_t handler, | |
138 | void *jarg); | |
aba5acdf | 139 | |
370d67ba | 140 | #define NLMSG_TAIL(nmsg) \ |
141 | ((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len))) | |
142 | ||
ead2ba70 SH |
143 | #ifndef IFA_RTA |
144 | #define IFA_RTA(r) \ | |
145 | ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg)))) | |
146 | #endif | |
147 | #ifndef IFA_PAYLOAD | |
148 | #define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg)) | |
149 | #endif | |
150 | ||
151 | #ifndef IFLA_RTA | |
152 | #define IFLA_RTA(r) \ | |
153 | ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg)))) | |
154 | #endif | |
155 | #ifndef IFLA_PAYLOAD | |
156 | #define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg)) | |
157 | #endif | |
158 | ||
159 | #ifndef NDA_RTA | |
160 | #define NDA_RTA(r) \ | |
161 | ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg)))) | |
162 | #endif | |
163 | #ifndef NDA_PAYLOAD | |
164 | #define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndmsg)) | |
165 | #endif | |
166 | ||
167 | #ifndef NDTA_RTA | |
168 | #define NDTA_RTA(r) \ | |
169 | ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndtmsg)))) | |
170 | #endif | |
171 | #ifndef NDTA_PAYLOAD | |
172 | #define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndtmsg)) | |
173 | #endif | |
174 | ||
d182ee13 ND |
175 | #ifndef NETNS_RTA |
176 | #define NETNS_RTA(r) \ | |
177 | ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtgenmsg)))) | |
178 | #endif | |
179 | #ifndef NETNS_PAYLOAD | |
180 | #define NETNS_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtgenmsg)) | |
181 | #endif | |
182 | ||
27b14f2e VK |
183 | /* User defined nlmsg_type which is used mostly for logging netlink |
184 | * messages from dump file */ | |
185 | #define NLMSG_TSTAMP 15 | |
186 | ||
aba5acdf SH |
187 | #endif /* __LIBNETLINK_H__ */ |
188 |