osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 1 | #ifndef __LIBNETLINK_H__ |
| 2 | #define __LIBNETLINK_H__ 1 |
| 3 | |
Strake | 5bd9dd4 | 2012-12-23 08:46:04 -0500 | [diff] [blame] | 4 | #include <stdio.h> |
Jan Engelhardt | f5b830d | 2011-12-31 23:16:27 +0100 | [diff] [blame] | 5 | #include <string.h> |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 6 | #include <asm/types.h> |
| 7 | #include <linux/netlink.h> |
| 8 | #include <linux/rtnetlink.h> |
Stephen Hemminger | ead2ba7 | 2006-12-05 09:54:48 -0800 | [diff] [blame] | 9 | #include <linux/if_link.h> |
| 10 | #include <linux/if_addr.h> |
| 11 | #include <linux/neighbour.h> |
Nicolas Dichtel | 9d0efc1 | 2012-12-12 09:09:23 -0800 | [diff] [blame] | 12 | #include <linux/netconf.h> |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 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; |
vadimk | 8a4025f | 2014-12-04 12:32:58 +0200 | [diff] [blame] | 21 | int proto; |
Vadim Kochan | 486ccd9 | 2014-12-26 04:26:27 +0200 | [diff] [blame] | 22 | FILE *dump_fp; |
Nicolas Dichtel | 449b824 | 2015-05-20 16:20:00 +0200 | [diff] [blame] | 23 | #define RTNL_HANDLE_F_LISTEN_ALL_NSID 0x01 |
| 24 | int flags; |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 25 | }; |
| 26 | |
Patrick McHardy | 7f03191 | 2009-10-28 20:50:48 +0100 | [diff] [blame] | 27 | extern int rcvbuf; |
| 28 | |
Stephen Hemminger | 892e212 | 2015-08-13 14:09:58 -0700 | [diff] [blame] | 29 | int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions) |
Stephen Hemminger | d2468da | 2013-12-20 08:15:02 -0800 | [diff] [blame] | 30 | __attribute__((warn_unused_result)); |
| 31 | |
Stephen Hemminger | 892e212 | 2015-08-13 14:09:58 -0700 | [diff] [blame] | 32 | int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions, |
Stephen Hemminger | d2468da | 2013-12-20 08:15:02 -0800 | [diff] [blame] | 33 | int protocol) |
| 34 | __attribute__((warn_unused_result)); |
| 35 | |
Stephen Hemminger | 892e212 | 2015-08-13 14:09:58 -0700 | [diff] [blame] | 36 | void rtnl_close(struct rtnl_handle *rth); |
| 37 | int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type) |
Stephen Hemminger | d2468da | 2013-12-20 08:15:02 -0800 | [diff] [blame] | 38 | __attribute__((warn_unused_result)); |
Stephen Hemminger | 892e212 | 2015-08-13 14:09:58 -0700 | [diff] [blame] | 39 | int rtnl_wilddump_req_filter(struct rtnl_handle *rth, int fam, int type, |
Stephen Hemminger | d2468da | 2013-12-20 08:15:02 -0800 | [diff] [blame] | 40 | __u32 filt_mask) |
| 41 | __attribute__((warn_unused_result)); |
Stephen Hemminger | 892e212 | 2015-08-13 14:09:58 -0700 | [diff] [blame] | 42 | int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, |
Stephen Hemminger | d2468da | 2013-12-20 08:15:02 -0800 | [diff] [blame] | 43 | int len) |
| 44 | __attribute__((warn_unused_result)); |
David Ahern | 0d238ca | 2015-10-02 09:42:27 -0700 | [diff] [blame] | 45 | int rtnl_dump_request_n(struct rtnl_handle *rth, struct nlmsghdr *n) |
| 46 | __attribute__((warn_unused_result)); |
osdl.net!shemminger | 6dc9f01 | 2004-08-31 17:45:21 +0000 | [diff] [blame] | 47 | |
Nicolas Dichtel | 0628cdd | 2015-05-20 16:19:58 +0200 | [diff] [blame] | 48 | struct rtnl_ctrl_data { |
Nicolas Dichtel | 449b824 | 2015-05-20 16:20:00 +0200 | [diff] [blame] | 49 | int nsid; |
Nicolas Dichtel | 0628cdd | 2015-05-20 16:19:58 +0200 | [diff] [blame] | 50 | }; |
| 51 | |
Stephen Hemminger | ae665a5 | 2006-12-05 10:10:22 -0800 | [diff] [blame] | 52 | typedef int (*rtnl_filter_t)(const struct sockaddr_nl *, |
osdl.net!shemminger | 50772dc | 2004-12-07 21:48:29 +0000 | [diff] [blame] | 53 | struct nlmsghdr *n, void *); |
Simon Horman | b49240e | 2009-12-03 12:08:27 +1100 | [diff] [blame] | 54 | |
Nicolas Dichtel | 0628cdd | 2015-05-20 16:19:58 +0200 | [diff] [blame] | 55 | typedef int (*rtnl_listen_filter_t)(const struct sockaddr_nl *, |
| 56 | struct rtnl_ctrl_data *, |
| 57 | struct nlmsghdr *n, void *); |
| 58 | |
Simon Horman | b49240e | 2009-12-03 12:08:27 +1100 | [diff] [blame] | 59 | struct rtnl_dump_filter_arg |
| 60 | { |
| 61 | rtnl_filter_t filter; |
| 62 | void *arg1; |
Simon Horman | b49240e | 2009-12-03 12:08:27 +1100 | [diff] [blame] | 63 | }; |
| 64 | |
Stephen Hemminger | 892e212 | 2015-08-13 14:09:58 -0700 | [diff] [blame] | 65 | int rtnl_dump_filter_l(struct rtnl_handle *rth, |
Simon Horman | b49240e | 2009-12-03 12:08:27 +1100 | [diff] [blame] | 66 | const struct rtnl_dump_filter_arg *arg); |
Stephen Hemminger | 892e212 | 2015-08-13 14:09:58 -0700 | [diff] [blame] | 67 | int rtnl_dump_filter(struct rtnl_handle *rth, rtnl_filter_t filter, void *arg); |
| 68 | int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, |
| 69 | struct nlmsghdr *answer, size_t len) |
Stephen Hemminger | d2468da | 2013-12-20 08:15:02 -0800 | [diff] [blame] | 70 | __attribute__((warn_unused_result)); |
Stephen Hemminger | 892e212 | 2015-08-13 14:09:58 -0700 | [diff] [blame] | 71 | int rtnl_send(struct rtnl_handle *rth, const void *buf, int) |
Stephen Hemminger | d2468da | 2013-12-20 08:15:02 -0800 | [diff] [blame] | 72 | __attribute__((warn_unused_result)); |
Stephen Hemminger | 892e212 | 2015-08-13 14:09:58 -0700 | [diff] [blame] | 73 | int rtnl_send_check(struct rtnl_handle *rth, const void *buf, int) |
Stephen Hemminger | d2468da | 2013-12-20 08:15:02 -0800 | [diff] [blame] | 74 | __attribute__((warn_unused_result)); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 75 | |
Stephen Hemminger | 892e212 | 2015-08-13 14:09:58 -0700 | [diff] [blame] | 76 | int addattr(struct nlmsghdr *n, int maxlen, int type); |
| 77 | int addattr8(struct nlmsghdr *n, int maxlen, int type, __u8 data); |
| 78 | int addattr16(struct nlmsghdr *n, int maxlen, int type, __u16 data); |
| 79 | int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data); |
| 80 | int addattr64(struct nlmsghdr *n, int maxlen, int type, __u64 data); |
| 81 | int addattrstrz(struct nlmsghdr *n, int maxlen, int type, const char *data); |
Stephen Hemminger | 2aa3dd2 | 2011-12-23 10:43:54 -0800 | [diff] [blame] | 82 | |
Stephen Hemminger | 892e212 | 2015-08-13 14:09:58 -0700 | [diff] [blame] | 83 | int addattr_l(struct nlmsghdr *n, int maxlen, int type, |
| 84 | const void *data, int alen); |
| 85 | int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len); |
| 86 | struct rtattr *addattr_nest(struct nlmsghdr *n, int maxlen, int type); |
| 87 | int addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest); |
| 88 | struct rtattr *addattr_nest_compat(struct nlmsghdr *n, int maxlen, int type, |
| 89 | const void *data, int len); |
| 90 | int addattr_nest_compat_end(struct nlmsghdr *n, struct rtattr *nest); |
Roopa Prabhu | 303cc9c | 2015-10-15 13:13:38 +0200 | [diff] [blame] | 91 | int rta_addattr8(struct rtattr *rta, int maxlen, int type, __u8 data); |
| 92 | int rta_addattr16(struct rtattr *rta, int maxlen, int type, __u16 data); |
Stephen Hemminger | 892e212 | 2015-08-13 14:09:58 -0700 | [diff] [blame] | 93 | int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data); |
Roopa Prabhu | 303cc9c | 2015-10-15 13:13:38 +0200 | [diff] [blame] | 94 | int rta_addattr64(struct rtattr *rta, int maxlen, int type, __u64 data); |
Stephen Hemminger | 892e212 | 2015-08-13 14:09:58 -0700 | [diff] [blame] | 95 | int rta_addattr_l(struct rtattr *rta, int maxlen, int type, |
| 96 | const void *data, int alen); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 97 | |
Stephen Hemminger | 892e212 | 2015-08-13 14:09:58 -0700 | [diff] [blame] | 98 | int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len); |
| 99 | int parse_rtattr_flags(struct rtattr *tb[], int max, struct rtattr *rta, |
Vlad Yasevich | b1b7ce0 | 2013-03-15 10:01:28 -0700 | [diff] [blame] | 100 | int len, unsigned short flags); |
Stephen Hemminger | 892e212 | 2015-08-13 14:09:58 -0700 | [diff] [blame] | 101 | int parse_rtattr_byindex(struct rtattr *tb[], int max, |
| 102 | struct rtattr *rta, int len); |
| 103 | struct rtattr *parse_rtattr_one(int type, struct rtattr *rta, int len); |
| 104 | int __parse_rtattr_nested_compat(struct rtattr *tb[], int max, struct rtattr *rta, int len); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 105 | |
Roopa Prabhu | 303cc9c | 2015-10-15 13:13:38 +0200 | [diff] [blame] | 106 | struct rtattr *rta_nest(struct rtattr *rta, int maxlen, int type); |
| 107 | int rta_nest_end(struct rtattr *rta, struct rtattr *nest); |
| 108 | |
| 109 | #define RTA_TAIL(rta) \ |
| 110 | ((struct rtattr *) (((void *) (rta)) + \ |
| 111 | RTA_ALIGN((rta)->rta_len))) |
| 112 | |
5!tgraf | 753fca4 | 2005-01-18 22:11:58 +0000 | [diff] [blame] | 113 | #define parse_rtattr_nested(tb, max, rta) \ |
| 114 | (parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta))) |
| 115 | |
Jiri Pirko | decbb43 | 2015-01-06 17:23:45 +0100 | [diff] [blame] | 116 | #define parse_rtattr_one_nested(type, rta) \ |
| 117 | (parse_rtattr_one(type, RTA_DATA(rta), RTA_PAYLOAD(rta))) |
| 118 | |
Patrick McHardy | 2f90c9c | 2007-08-14 11:21:19 -0700 | [diff] [blame] | 119 | #define parse_rtattr_nested_compat(tb, max, rta, data, len) \ |
Stephen Hemminger | cd70f3f | 2011-12-28 10:37:12 -0800 | [diff] [blame] | 120 | ({ data = RTA_PAYLOAD(rta) >= len ? RTA_DATA(rta) : NULL; \ |
| 121 | __parse_rtattr_nested_compat(tb, max, rta, len); }) |
Patrick McHardy | 2f90c9c | 2007-08-14 11:21:19 -0700 | [diff] [blame] | 122 | |
Stephen Hemminger | 7dd0371 | 2012-03-15 17:47:51 -0700 | [diff] [blame] | 123 | static inline __u8 rta_getattr_u8(const struct rtattr *rta) |
| 124 | { |
| 125 | return *(__u8 *)RTA_DATA(rta); |
| 126 | } |
Stephen Hemminger | 46c5d64 | 2011-12-29 09:29:33 -0800 | [diff] [blame] | 127 | static inline __u16 rta_getattr_u16(const struct rtattr *rta) |
| 128 | { |
| 129 | return *(__u16 *)RTA_DATA(rta); |
| 130 | } |
Stephen Hemminger | 7dd0371 | 2012-03-15 17:47:51 -0700 | [diff] [blame] | 131 | static inline __u32 rta_getattr_u32(const struct rtattr *rta) |
Stephen Hemminger | 46c5d64 | 2011-12-29 09:29:33 -0800 | [diff] [blame] | 132 | { |
| 133 | return *(__u32 *)RTA_DATA(rta); |
| 134 | } |
| 135 | static inline __u64 rta_getattr_u64(const struct rtattr *rta) |
| 136 | { |
| 137 | __u64 tmp; |
| 138 | memcpy(&tmp, RTA_DATA(rta), sizeof(__u64)); |
| 139 | return tmp; |
| 140 | } |
| 141 | static inline const char *rta_getattr_str(const struct rtattr *rta) |
| 142 | { |
Stephen Hemminger | cfd2cbd | 2012-02-06 09:35:27 -0800 | [diff] [blame] | 143 | return (const char *)RTA_DATA(rta); |
Stephen Hemminger | 46c5d64 | 2011-12-29 09:29:33 -0800 | [diff] [blame] | 144 | } |
| 145 | |
Stephen Hemminger | 892e212 | 2015-08-13 14:09:58 -0700 | [diff] [blame] | 146 | int rtnl_listen_all_nsid(struct rtnl_handle *); |
| 147 | int rtnl_listen(struct rtnl_handle *, rtnl_listen_filter_t handler, |
| 148 | void *jarg); |
| 149 | int rtnl_from_file(FILE *, rtnl_listen_filter_t handler, |
| 150 | void *jarg); |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 151 | |
5!tgraf | 370d67b | 2005-01-18 01:24:18 +0000 | [diff] [blame] | 152 | #define NLMSG_TAIL(nmsg) \ |
| 153 | ((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len))) |
| 154 | |
Stephen Hemminger | ead2ba7 | 2006-12-05 09:54:48 -0800 | [diff] [blame] | 155 | #ifndef IFA_RTA |
| 156 | #define IFA_RTA(r) \ |
| 157 | ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg)))) |
| 158 | #endif |
| 159 | #ifndef IFA_PAYLOAD |
| 160 | #define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg)) |
| 161 | #endif |
| 162 | |
| 163 | #ifndef IFLA_RTA |
| 164 | #define IFLA_RTA(r) \ |
| 165 | ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg)))) |
| 166 | #endif |
| 167 | #ifndef IFLA_PAYLOAD |
| 168 | #define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg)) |
| 169 | #endif |
| 170 | |
| 171 | #ifndef NDA_RTA |
| 172 | #define NDA_RTA(r) \ |
| 173 | ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg)))) |
| 174 | #endif |
| 175 | #ifndef NDA_PAYLOAD |
| 176 | #define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndmsg)) |
| 177 | #endif |
| 178 | |
| 179 | #ifndef NDTA_RTA |
| 180 | #define NDTA_RTA(r) \ |
| 181 | ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndtmsg)))) |
| 182 | #endif |
| 183 | #ifndef NDTA_PAYLOAD |
| 184 | #define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndtmsg)) |
| 185 | #endif |
| 186 | |
Nicolas Dichtel | d182ee1 | 2015-02-17 17:30:37 +0100 | [diff] [blame] | 187 | #ifndef NETNS_RTA |
| 188 | #define NETNS_RTA(r) \ |
| 189 | ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtgenmsg)))) |
| 190 | #endif |
| 191 | #ifndef NETNS_PAYLOAD |
| 192 | #define NETNS_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtgenmsg)) |
| 193 | #endif |
| 194 | |
Vadim Kochan | 27b14f2 | 2015-01-13 20:14:23 +0200 | [diff] [blame] | 195 | /* User defined nlmsg_type which is used mostly for logging netlink |
| 196 | * messages from dump file */ |
| 197 | #define NLMSG_TSTAMP 15 |
| 198 | |
osdl.org!shemminger | aba5acd | 2004-04-15 20:56:59 +0000 | [diff] [blame] | 199 | #endif /* __LIBNETLINK_H__ */ |
| 200 | |