mirror of
https://git.proxmox.com/git/mirror_frr
synced 2025-10-31 10:31:50 +00:00
137 lines
4.8 KiB
C
137 lines
4.8 KiB
C
/*
|
|
* libnetlink.c RTnetlink service routines.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*
|
|
* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
|
|
*
|
|
*/
|
|
|
|
#ifdef __linux__
|
|
|
|
#ifndef __LIBNETLINK_H__
|
|
#define __LIBNETLINK_H__ 1
|
|
|
|
#include <asm/types.h>
|
|
#include <linux/netlink.h>
|
|
#include <linux/rtnetlink.h>
|
|
#include <linux/if_link.h>
|
|
#include <linux/if_addr.h>
|
|
#include <linux/neighbour.h>
|
|
|
|
struct rtnl_handle {
|
|
int fd;
|
|
struct sockaddr_nl local;
|
|
struct sockaddr_nl peer;
|
|
__u32 seq;
|
|
__u32 dump;
|
|
};
|
|
|
|
extern int rcvbuf;
|
|
|
|
extern int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions);
|
|
extern int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions,
|
|
int protocol);
|
|
extern void rtnl_close(struct rtnl_handle *rth);
|
|
extern int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type);
|
|
extern int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req,
|
|
int len);
|
|
|
|
typedef int (*rtnl_filter_t)(const struct sockaddr_nl *, struct nlmsghdr *n,
|
|
void *);
|
|
|
|
struct rtnl_dump_filter_arg {
|
|
rtnl_filter_t filter;
|
|
void *arg1;
|
|
rtnl_filter_t junk;
|
|
void *arg2;
|
|
};
|
|
|
|
extern int rtnl_dump_filter_l(struct rtnl_handle *rth,
|
|
const struct rtnl_dump_filter_arg *arg);
|
|
extern int rtnl_dump_filter(struct rtnl_handle *rth, rtnl_filter_t filter,
|
|
void *arg1, rtnl_filter_t junk, void *arg2);
|
|
|
|
extern int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
|
|
unsigned groups, struct nlmsghdr *answer,
|
|
rtnl_filter_t junk, void *jarg);
|
|
extern int rtnl_send(struct rtnl_handle *rth, const char *buf, int);
|
|
extern int rtnl_send_check(struct rtnl_handle *rth, const char *buf, int);
|
|
|
|
extern int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data);
|
|
extern int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data,
|
|
int alen);
|
|
extern int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len);
|
|
extern struct rtattr *addattr_nest(struct nlmsghdr *n, int maxlen, int type);
|
|
extern int addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest);
|
|
extern struct rtattr *addattr_nest_compat(struct nlmsghdr *n, int maxlen,
|
|
int type, const void *data, int len);
|
|
extern int addattr_nest_compat_end(struct nlmsghdr *n, struct rtattr *nest);
|
|
extern int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data);
|
|
extern int rta_addattr_l(struct rtattr *rta, int maxlen, int type,
|
|
const void *data, int alen);
|
|
|
|
extern int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta,
|
|
int len);
|
|
extern int parse_rtattr_byindex(struct rtattr *tb[], int max,
|
|
struct rtattr *rta, int len);
|
|
extern int __parse_rtattr_nested_compat(struct rtattr *tb[], int max,
|
|
struct rtattr *rta, int len);
|
|
|
|
#define parse_rtattr_nested(tb, max, rta) \
|
|
(parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta)))
|
|
|
|
#define parse_rtattr_nested_compat(tb, max, rta, data, len) \
|
|
({ \
|
|
data = RTA_PAYLOAD(rta) >= len ? RTA_DATA(rta) : NULL; \
|
|
__parse_rtattr_nested_compat(tb, max, rta, len); \
|
|
})
|
|
|
|
extern int rtnl_listen(struct rtnl_handle *, rtnl_filter_t handler, void *jarg);
|
|
extern int rtnl_from_file(FILE *, rtnl_filter_t handler, void *jarg);
|
|
|
|
#define NLMSG_TAIL(nmsg) \
|
|
((struct rtattr *)(((uint8_t *)(nmsg)) \
|
|
+ NLMSG_ALIGN((nmsg)->nlmsg_len)))
|
|
|
|
#ifndef IFA_RTA
|
|
#define IFA_RTA(r) \
|
|
((struct rtattr *)(((char *)(r)) \
|
|
+ NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
|
|
#endif
|
|
#ifndef IFA_PAYLOAD
|
|
#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg))
|
|
#endif
|
|
|
|
#ifndef IFLA_RTA
|
|
#define IFLA_RTA(r) \
|
|
((struct rtattr *)(((char *)(r)) \
|
|
+ NLMSG_ALIGN(sizeof(struct ifinfomsg))))
|
|
#endif
|
|
#ifndef IFLA_PAYLOAD
|
|
#define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg))
|
|
#endif
|
|
|
|
#ifndef NDA_RTA
|
|
#define NDA_RTA(r) \
|
|
((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg))))
|
|
#endif
|
|
#ifndef NDA_PAYLOAD
|
|
#define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndmsg))
|
|
#endif
|
|
|
|
#ifndef NDTA_RTA
|
|
#define NDTA_RTA(r) \
|
|
((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct ndtmsg))))
|
|
#endif
|
|
#ifndef NDTA_PAYLOAD
|
|
#define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndtmsg))
|
|
#endif
|
|
|
|
#endif /* __LIBNETLINK_H__ */
|
|
|
|
#endif /* __linux__ */
|