netsukuku/src/libnetlink.h
2014-09-17 10:36:24 -05:00

80 lines
2.8 KiB
C

/* This file is part of Netsukuku
*
* This source code 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.
*
* This source code is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* Please refer to the GNU Public License for more details.
*
* You should have received a copy of the GNU Public License along with
* this source code; if not, write to:
* Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifndef __LIBNETLINK_H__
#define __LIBNETLINK_H__ 1
#include <asm/types.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
struct rtnl_handle {
int fd;
struct sockaddr_nl local;
struct sockaddr_nl peer;
uint32_t seq;
uint32_t dump;
};
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 *);
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 addattr32(struct nlmsghdr *n, int maxlen, int type,
uint32_t 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 int rta_addattr32(struct rtattr *rta, int maxlen, int type,
uint32_t 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);
#define parse_rtattr_nested(tb, max, rta) \
(parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta)))
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 *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
#endif /* __LIBNETLINK_H__ */