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205 lines
6.5 KiB
205 lines
6.5 KiB
#ifndef __LIBNETLINK_H__ |
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#define __LIBNETLINK_H__ 1 |
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#include <stdio.h> |
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#include <string.h> |
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#include <asm/types.h> |
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#include <linux/netlink.h> |
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#include <linux/rtnetlink.h> |
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#include <linux/if_link.h> |
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#include <linux/if_addr.h> |
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#include <linux/neighbour.h> |
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#include <linux/netconf.h> |
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struct rtnl_handle |
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{ |
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int fd; |
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struct sockaddr_nl local; |
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struct sockaddr_nl peer; |
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__u32 seq; |
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__u32 dump; |
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int proto; |
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FILE *dump_fp; |
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#define RTNL_HANDLE_F_LISTEN_ALL_NSID 0x01 |
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int flags; |
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}; |
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extern int rcvbuf; |
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int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions) |
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__attribute__((warn_unused_result)); |
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int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions, |
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int protocol) |
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__attribute__((warn_unused_result)); |
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void rtnl_close(struct rtnl_handle *rth); |
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int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type) |
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__attribute__((warn_unused_result)); |
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int rtnl_wilddump_req_filter(struct rtnl_handle *rth, int fam, int type, |
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__u32 filt_mask) |
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__attribute__((warn_unused_result)); |
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int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, |
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int len) |
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__attribute__((warn_unused_result)); |
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int rtnl_dump_request_n(struct rtnl_handle *rth, struct nlmsghdr *n) |
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__attribute__((warn_unused_result)); |
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struct rtnl_ctrl_data { |
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int nsid; |
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}; |
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typedef int (*rtnl_filter_t)(const struct sockaddr_nl *, |
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struct nlmsghdr *n, void *); |
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typedef int (*rtnl_listen_filter_t)(const struct sockaddr_nl *, |
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struct rtnl_ctrl_data *, |
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struct nlmsghdr *n, void *); |
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struct rtnl_dump_filter_arg |
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{ |
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rtnl_filter_t filter; |
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void *arg1; |
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__u16 nc_flags; |
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}; |
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int rtnl_dump_filter_l(struct rtnl_handle *rth, |
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const struct rtnl_dump_filter_arg *arg); |
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int rtnl_dump_filter_nc(struct rtnl_handle *rth, |
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rtnl_filter_t filter, |
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void *arg, __u16 nc_flags); |
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#define rtnl_dump_filter(rth, filter, arg) \ |
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rtnl_dump_filter_nc(rth, filter, arg, 0) |
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int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, |
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struct nlmsghdr *answer, size_t len) |
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__attribute__((warn_unused_result)); |
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int rtnl_send(struct rtnl_handle *rth, const void *buf, int) |
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__attribute__((warn_unused_result)); |
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int rtnl_send_check(struct rtnl_handle *rth, const void *buf, int) |
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__attribute__((warn_unused_result)); |
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int addattr(struct nlmsghdr *n, int maxlen, int type); |
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int addattr8(struct nlmsghdr *n, int maxlen, int type, __u8 data); |
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int addattr16(struct nlmsghdr *n, int maxlen, int type, __u16 data); |
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int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data); |
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int addattr64(struct nlmsghdr *n, int maxlen, int type, __u64 data); |
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int addattrstrz(struct nlmsghdr *n, int maxlen, int type, const char *data); |
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int addattr_l(struct nlmsghdr *n, int maxlen, int type, |
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const void *data, int alen); |
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int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len); |
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struct rtattr *addattr_nest(struct nlmsghdr *n, int maxlen, int type); |
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int addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest); |
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struct rtattr *addattr_nest_compat(struct nlmsghdr *n, int maxlen, int type, |
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const void *data, int len); |
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int addattr_nest_compat_end(struct nlmsghdr *n, struct rtattr *nest); |
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int rta_addattr8(struct rtattr *rta, int maxlen, int type, __u8 data); |
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int rta_addattr16(struct rtattr *rta, int maxlen, int type, __u16 data); |
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int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data); |
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int rta_addattr64(struct rtattr *rta, int maxlen, int type, __u64 data); |
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int rta_addattr_l(struct rtattr *rta, int maxlen, int type, |
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const void *data, int alen); |
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int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len); |
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int parse_rtattr_flags(struct rtattr *tb[], int max, struct rtattr *rta, |
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int len, unsigned short flags); |
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int parse_rtattr_byindex(struct rtattr *tb[], int max, |
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struct rtattr *rta, int len); |
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struct rtattr *parse_rtattr_one(int type, struct rtattr *rta, int len); |
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int __parse_rtattr_nested_compat(struct rtattr *tb[], int max, struct rtattr *rta, int len); |
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struct rtattr *rta_nest(struct rtattr *rta, int maxlen, int type); |
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int rta_nest_end(struct rtattr *rta, struct rtattr *nest); |
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#define RTA_TAIL(rta) \ |
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((struct rtattr *) (((void *) (rta)) + \ |
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RTA_ALIGN((rta)->rta_len))) |
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#define parse_rtattr_nested(tb, max, rta) \ |
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(parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta))) |
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#define parse_rtattr_one_nested(type, rta) \ |
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(parse_rtattr_one(type, RTA_DATA(rta), RTA_PAYLOAD(rta))) |
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#define parse_rtattr_nested_compat(tb, max, rta, data, len) \ |
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({ data = RTA_PAYLOAD(rta) >= len ? RTA_DATA(rta) : NULL; \ |
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__parse_rtattr_nested_compat(tb, max, rta, len); }) |
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static inline __u8 rta_getattr_u8(const struct rtattr *rta) |
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{ |
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return *(__u8 *)RTA_DATA(rta); |
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} |
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static inline __u16 rta_getattr_u16(const struct rtattr *rta) |
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{ |
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return *(__u16 *)RTA_DATA(rta); |
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} |
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static inline __u32 rta_getattr_u32(const struct rtattr *rta) |
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{ |
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return *(__u32 *)RTA_DATA(rta); |
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} |
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static inline __u64 rta_getattr_u64(const struct rtattr *rta) |
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{ |
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__u64 tmp; |
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memcpy(&tmp, RTA_DATA(rta), sizeof(__u64)); |
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return tmp; |
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} |
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static inline const char *rta_getattr_str(const struct rtattr *rta) |
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{ |
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return (const char *)RTA_DATA(rta); |
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} |
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int rtnl_listen_all_nsid(struct rtnl_handle *); |
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int rtnl_listen(struct rtnl_handle *, rtnl_listen_filter_t handler, |
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void *jarg); |
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int rtnl_from_file(FILE *, rtnl_listen_filter_t handler, |
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void *jarg); |
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#define NLMSG_TAIL(nmsg) \ |
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((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len))) |
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#ifndef IFA_RTA |
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#define IFA_RTA(r) \ |
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((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg)))) |
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#endif |
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#ifndef IFA_PAYLOAD |
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#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg)) |
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#endif |
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#ifndef IFLA_RTA |
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#define IFLA_RTA(r) \ |
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((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg)))) |
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#endif |
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#ifndef IFLA_PAYLOAD |
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#define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg)) |
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#endif |
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#ifndef NDA_RTA |
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#define NDA_RTA(r) \ |
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((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg)))) |
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#endif |
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#ifndef NDA_PAYLOAD |
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#define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndmsg)) |
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#endif |
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#ifndef NDTA_RTA |
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#define NDTA_RTA(r) \ |
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((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndtmsg)))) |
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#endif |
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#ifndef NDTA_PAYLOAD |
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#define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndtmsg)) |
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#endif |
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#ifndef NETNS_RTA |
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#define NETNS_RTA(r) \ |
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((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtgenmsg)))) |
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#endif |
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#ifndef NETNS_PAYLOAD |
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#define NETNS_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtgenmsg)) |
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#endif |
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/* User defined nlmsg_type which is used mostly for logging netlink |
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* messages from dump file */ |
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#define NLMSG_TSTAMP 15 |
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#endif /* __LIBNETLINK_H__ */ |
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