libnetlink.h revision 46c5d64d6967da4401122159a8d9488c1878be65
1aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#ifndef __LIBNETLINK_H__ 2aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#define __LIBNETLINK_H__ 1 3aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 4aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <asm/types.h> 5aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <linux/netlink.h> 6aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#include <linux/rtnetlink.h> 7ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#include <linux/if_link.h> 8ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#include <linux/if_addr.h> 9ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#include <linux/neighbour.h> 10aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 11aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemmingerstruct rtnl_handle 12aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger{ 13aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger int fd; 14aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger struct sockaddr_nl local; 15aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger struct sockaddr_nl peer; 16aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger __u32 seq; 17aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger __u32 dump; 18aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger}; 19aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 207f03191fda39ff09640f093b7ad84f461ffd65b2Patrick McHardyextern int rcvbuf; 217f03191fda39ff09640f093b7ad84f461ffd65b2Patrick McHardy 22aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemmingerextern int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions); 23c7699875bee00fbcd057fc62c30d6560b044e007net[shemminger]!shemmingerextern int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions, int protocol); 24aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemmingerextern void rtnl_close(struct rtnl_handle *rth); 25aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemmingerextern int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type); 26aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemmingerextern int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len); 276dc9f016347441fbf94cf851c054b0f45ba32c1cosdl.net!shemminger 28ae665a522bd46bea44c5ea84c89c8b1731954170Stephen Hemmingertypedef int (*rtnl_filter_t)(const struct sockaddr_nl *, 2950772dc51ac02239958e1ebcdb21277fcdf133a7osdl.net!shemminger struct nlmsghdr *n, void *); 30b49240ec7eab91418d2f090536bf8cd2205988d6Simon Horman 31b49240ec7eab91418d2f090536bf8cd2205988d6Simon Hormanstruct rtnl_dump_filter_arg 32b49240ec7eab91418d2f090536bf8cd2205988d6Simon Horman{ 33b49240ec7eab91418d2f090536bf8cd2205988d6Simon Horman rtnl_filter_t filter; 34b49240ec7eab91418d2f090536bf8cd2205988d6Simon Horman void *arg1; 35b49240ec7eab91418d2f090536bf8cd2205988d6Simon Horman}; 36b49240ec7eab91418d2f090536bf8cd2205988d6Simon Horman 37b49240ec7eab91418d2f090536bf8cd2205988d6Simon Hormanextern int rtnl_dump_filter_l(struct rtnl_handle *rth, 38b49240ec7eab91418d2f090536bf8cd2205988d6Simon Horman const struct rtnl_dump_filter_arg *arg); 396dc9f016347441fbf94cf851c054b0f45ba32c1cosdl.net!shemmingerextern int rtnl_dump_filter(struct rtnl_handle *rth, rtnl_filter_t filter, 40cd70f3f522e04b4d2fa80ae10292379bf223a53bStephen Hemminger void *arg); 41aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemmingerextern int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer, 42cd70f3f522e04b4d2fa80ae10292379bf223a53bStephen Hemminger unsigned groups, struct nlmsghdr *answer); 436cf8398f5f487762586801c25539d8fe5bb33b39Stephen Hemmingerextern int rtnl_send(struct rtnl_handle *rth, const void *buf, int); 446cf8398f5f487762586801c25539d8fe5bb33b39Stephen Hemmingerextern int rtnl_send_check(struct rtnl_handle *rth, const void *buf, int); 45aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 462aa3dd29a75c494bf969586da5489d4dc7d07839Stephen Hemmingerextern int addattr(struct nlmsghdr *n, int maxlen, int type); 472aa3dd29a75c494bf969586da5489d4dc7d07839Stephen Hemmingerextern int addattr8(struct nlmsghdr *n, int maxlen, int type, __u8 data); 482aa3dd29a75c494bf969586da5489d4dc7d07839Stephen Hemmingerextern int addattr16(struct nlmsghdr *n, int maxlen, int type, __u16 data); 49aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemmingerextern int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data); 502aa3dd29a75c494bf969586da5489d4dc7d07839Stephen Hemmingerextern int addattr64(struct nlmsghdr *n, int maxlen, int type, __u64 data); 512aa3dd29a75c494bf969586da5489d4dc7d07839Stephen Hemmingerextern int addattrstrz(struct nlmsghdr *n, int maxlen, int type, const char *data); 522aa3dd29a75c494bf969586da5489d4dc7d07839Stephen Hemminger 536dc9f016347441fbf94cf851c054b0f45ba32c1cosdl.net!shemmingerextern int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data, int alen); 54a10ab08b002dfd25a2d48c6f493835140467a272struct nlmsghdr *n, int maxlen, const void *data, int len);extern int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len); 552f90c9c0bb0d8ed4841cb4c77c2d707ec07f20bfPatrick McHardyextern struct rtattr *addattr_nest(struct nlmsghdr *n, int maxlen, int type); 562f90c9c0bb0d8ed4841cb4c77c2d707ec07f20bfPatrick McHardyextern int addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest); 572f90c9c0bb0d8ed4841cb4c77c2d707ec07f20bfPatrick McHardyextern struct rtattr *addattr_nest_compat(struct nlmsghdr *n, int maxlen, int type, const void *data, int len); 582f90c9c0bb0d8ed4841cb4c77c2d707ec07f20bfPatrick McHardyextern int addattr_nest_compat_end(struct nlmsghdr *n, struct rtattr *nest); 59aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemmingerextern int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data); 606dc9f016347441fbf94cf851c054b0f45ba32c1cosdl.net!shemmingerextern int rta_addattr_l(struct rtattr *rta, int maxlen, int type, const void *data, int alen); 61aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 62aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemmingerextern int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len); 63c7699875bee00fbcd057fc62c30d6560b044e007net[shemminger]!shemmingerextern int parse_rtattr_byindex(struct rtattr *tb[], int max, struct rtattr *rta, int len); 642f90c9c0bb0d8ed4841cb4c77c2d707ec07f20bfPatrick McHardyextern int __parse_rtattr_nested_compat(struct rtattr *tb[], int max, struct rtattr *rta, int len); 65aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 66753fca4f54bdc4178fac97954746ded6553920a7tb, max, rta) \#define parse_rtattr_nested(tb, max, rta) \ 67753fca4f54bdc4178fac97954746ded6553920a7parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta))) (parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta))) 682f90c9c0bb0d8ed4841cb4c77c2d707ec07f20bfPatrick McHardy 69cd70f3f522e04b4d2fa80ae10292379bf223a53bStephen Hemminger#define parse_rtattr_nested_compat(tb, max, rta, data, len) \ 70cd70f3f522e04b4d2fa80ae10292379bf223a53bStephen Hemminger ({ data = RTA_PAYLOAD(rta) >= len ? RTA_DATA(rta) : NULL; \ 712f90c9c0bb0d8ed4841cb4c77c2d707ec07f20bfPatrick McHardy __parse_rtattr_nested_compat(tb, max, rta, len); }) 7246c5d64d6967da4401122159a8d9488c1878be65Stephen Hemminger 7346c5d64d6967da4401122159a8d9488c1878be65Stephen Hemmingerstatic inline __u16 rta_getattr_u16(const struct rtattr *rta) 7446c5d64d6967da4401122159a8d9488c1878be65Stephen Hemminger{ 7546c5d64d6967da4401122159a8d9488c1878be65Stephen Hemminger return *(__u16 *)RTA_DATA(rta); 7646c5d64d6967da4401122159a8d9488c1878be65Stephen Hemminger} 7746c5d64d6967da4401122159a8d9488c1878be65Stephen Hemmingerstatic inline __u16 rta_getattr_u32(const struct rtattr *rta) 7846c5d64d6967da4401122159a8d9488c1878be65Stephen Hemminger{ 7946c5d64d6967da4401122159a8d9488c1878be65Stephen Hemminger return *(__u32 *)RTA_DATA(rta); 8046c5d64d6967da4401122159a8d9488c1878be65Stephen Hemminger} 8146c5d64d6967da4401122159a8d9488c1878be65Stephen Hemmingerstatic inline __u64 rta_getattr_u64(const struct rtattr *rta) 8246c5d64d6967da4401122159a8d9488c1878be65Stephen Hemminger{ 8346c5d64d6967da4401122159a8d9488c1878be65Stephen Hemminger __u64 tmp; 8446c5d64d6967da4401122159a8d9488c1878be65Stephen Hemminger memcpy(&tmp, RTA_DATA(rta), sizeof(__u64)); 8546c5d64d6967da4401122159a8d9488c1878be65Stephen Hemminger return tmp; 8646c5d64d6967da4401122159a8d9488c1878be65Stephen Hemminger} 8746c5d64d6967da4401122159a8d9488c1878be65Stephen Hemmingerstatic inline const char *rta_getattr_str(const struct rtattr *rta) 8846c5d64d6967da4401122159a8d9488c1878be65Stephen Hemminger{ 8946c5d64d6967da4401122159a8d9488c1878be65Stephen Hemminger return RTA_DATA(rta); 9046c5d64d6967da4401122159a8d9488c1878be65Stephen Hemminger} 91ae665a522bd46bea44c5ea84c89c8b1731954170Stephen Hemminger 92aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemmingerextern int rtnl_listen(struct rtnl_handle *, rtnl_filter_t handler, 936dc9f016347441fbf94cf851c054b0f45ba32c1cosdl.net!shemminger void *jarg); 94aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemmingerextern int rtnl_from_file(FILE *, rtnl_filter_t handler, 95aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger void *jarg); 96370d67ba5678b222ccbdd19647ae81ccc3c97801nmsg) \ 97370d67ba5678b222ccbdd19647ae81ccc3c97801(struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))#define NLMSG_TAIL(nmsg) \ 98ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger ((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len))) 99ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger 100ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#ifndef IFA_RTA 101ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#define IFA_RTA(r) \ 102ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg)))) 103ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#endif 104ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#ifndef IFA_PAYLOAD 105ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg)) 106ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#endif 107ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger 108ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#ifndef IFLA_RTA 109ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#define IFLA_RTA(r) \ 110ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg)))) 111ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#endif 112ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#ifndef IFLA_PAYLOAD 113ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg)) 114ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#endif 115ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger 116ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#ifndef NDA_RTA 117ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#define NDA_RTA(r) \ 118ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg)))) 119ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#endif 120ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#ifndef NDA_PAYLOAD 121ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndmsg)) 122ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#endif 123ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger 124ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#ifndef NDTA_RTA 125ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#define NDTA_RTA(r) \ 126ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndtmsg)))) 127ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#endif 128ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#ifndef NDTA_PAYLOAD 129ead2ba7008c9db02954dae6f180aed8770a0560dStephen Hemminger#define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndtmsg)) 130aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger#endif 131aba5acdfdb347d2c21fc67d613d83d4430ca3937osdl.org!shemminger 132#endif /* __LIBNETLINK_H__ */ 133 134