[mirror_iproute2.git] / include / libnetlink.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LIBNETLINK_H__
#define __LIBNETLINK_H__ 1

#include <stdio.h>
#include <string.h>
#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>
#include <linux/netconf.h>
#include <arpa/inet.h>

struct rtnl_handle {
	int			fd;
	struct sockaddr_nl	local;
	struct sockaddr_nl	peer;
	__u32			seq;
	__u32			dump;
	int			proto;
	FILE		       *dump_fp;
#define RTNL_HANDLE_F_LISTEN_ALL_NSID		0x01
#define RTNL_HANDLE_F_SUPPRESS_NLERR		0x02
	int			flags;
};

struct nlmsg_list {
	struct nlmsg_list *next;
	struct nlmsghdr   h;
};

struct nlmsg_chain {
	struct nlmsg_list *head;
	struct nlmsg_list *tail;
};

extern int rcvbuf;

int rtnl_open(struct rtnl_handle *rth, unsigned int subscriptions)
	__attribute__((warn_unused_result));

int rtnl_open_byproto(struct rtnl_handle *rth, unsigned int subscriptions,
			     int protocol)
	__attribute__((warn_unused_result));

void rtnl_close(struct rtnl_handle *rth);
void rtnl_set_strict_dump(struct rtnl_handle *rth);

typedef int (*req_filter_fn_t)(struct nlmsghdr *nlh, int reqlen);

int rtnl_addrdump_req(struct rtnl_handle *rth, int family,
		      req_filter_fn_t filter_fn)
	__attribute__((warn_unused_result));
int rtnl_addrlbldump_req(struct rtnl_handle *rth, int family)
	__attribute__((warn_unused_result));
int rtnl_routedump_req(struct rtnl_handle *rth, int family,
		       req_filter_fn_t filter_fn)
	__attribute__((warn_unused_result));
int rtnl_ruledump_req(struct rtnl_handle *rth, int family)
	__attribute__((warn_unused_result));
int rtnl_neighdump_req(struct rtnl_handle *rth, int family,
		       req_filter_fn_t filter_fn)
	__attribute__((warn_unused_result));
int rtnl_neightbldump_req(struct rtnl_handle *rth, int family)
	__attribute__((warn_unused_result));
int rtnl_mdbdump_req(struct rtnl_handle *rth, int family)
	__attribute__((warn_unused_result));
int rtnl_netconfdump_req(struct rtnl_handle *rth, int family)
	__attribute__((warn_unused_result));
int rtnl_nsiddump_req(struct rtnl_handle *rth, int family)
	__attribute__((warn_unused_result));

int rtnl_linkdump_req(struct rtnl_handle *rth, int fam)
	__attribute__((warn_unused_result));
int rtnl_linkdump_req_filter(struct rtnl_handle *rth, int fam, __u32 filt_mask)
	__attribute__((warn_unused_result));

int rtnl_linkdump_req_filter_fn(struct rtnl_handle *rth, int fam,
				req_filter_fn_t fn)
	__attribute__((warn_unused_result));
int rtnl_statsdump_req_filter(struct rtnl_handle *rth, int fam, __u32 filt_mask)
	__attribute__((warn_unused_result));
int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req,
			     int len)
	__attribute__((warn_unused_result));
int rtnl_dump_request_n(struct rtnl_handle *rth, struct nlmsghdr *n)
	__attribute__((warn_unused_result));

struct rtnl_ctrl_data {
	int	nsid;
};

typedef int (*rtnl_filter_t)(struct nlmsghdr *n, void *);

typedef int (*rtnl_listen_filter_t)(struct rtnl_ctrl_data *,
				    struct nlmsghdr *n, void *);

typedef int (*nl_ext_ack_fn_t)(const char *errmsg, uint32_t off,
			       const struct nlmsghdr *inner_nlh);

struct rtnl_dump_filter_arg {
	rtnl_filter_t filter;
	void *arg1;
	__u16 nc_flags;
};

int rtnl_dump_filter_nc(struct rtnl_handle *rth,
			rtnl_filter_t filter,
			void *arg, __u16 nc_flags);
#define rtnl_dump_filter(rth, filter, arg) \
	rtnl_dump_filter_nc(rth, filter, arg, 0)
int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n,
	      struct nlmsghdr **answer)
	__attribute__((warn_unused_result));
int rtnl_talk_iov(struct rtnl_handle *rtnl, struct iovec *iovec, size_t iovlen,
		  struct nlmsghdr **answer)
	__attribute__((warn_unused_result));
int rtnl_talk_suppress_rtnl_errmsg(struct rtnl_handle *rtnl, struct nlmsghdr *n,
				   struct nlmsghdr **answer)
	__attribute__((warn_unused_result));
int rtnl_send(struct rtnl_handle *rth, const void *buf, int)
	__attribute__((warn_unused_result));
int rtnl_send_check(struct rtnl_handle *rth, const void *buf, int)
	__attribute__((warn_unused_result));
int nl_dump_ext_ack(const struct nlmsghdr *nlh, nl_ext_ack_fn_t errfn);

int addattr(struct nlmsghdr *n, int maxlen, int type);
int addattr8(struct nlmsghdr *n, int maxlen, int type, __u8 data);
int addattr16(struct nlmsghdr *n, int maxlen, int type, __u16 data);
int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data);
int addattr64(struct nlmsghdr *n, int maxlen, int type, __u64 data);
int addattrstrz(struct nlmsghdr *n, int maxlen, int type, const char *data);

int addattr_l(struct nlmsghdr *n, int maxlen, int type,
	      const void *data, int alen);
int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len);
struct rtattr *addattr_nest(struct nlmsghdr *n, int maxlen, int type);
int addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest);
struct rtattr *addattr_nest_compat(struct nlmsghdr *n, int maxlen, int type,
				   const void *data, int len);
int addattr_nest_compat_end(struct nlmsghdr *n, struct rtattr *nest);
int rta_addattr8(struct rtattr *rta, int maxlen, int type, __u8 data);
int rta_addattr16(struct rtattr *rta, int maxlen, int type, __u16 data);
int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data);
int rta_addattr64(struct rtattr *rta, int maxlen, int type, __u64 data);
int rta_addattr_l(struct rtattr *rta, int maxlen, int type,
		  const void *data, int alen);

int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len);
int parse_rtattr_flags(struct rtattr *tb[], int max, struct rtattr *rta,
			      int len, unsigned short flags);
struct rtattr *parse_rtattr_one(int type, struct rtattr *rta, int len);
int __parse_rtattr_nested_compat(struct rtattr *tb[], int max, struct rtattr *rta, int len);

struct rtattr *rta_nest(struct rtattr *rta, int maxlen, int type);
int rta_nest_end(struct rtattr *rta, struct rtattr *nest);

#define RTA_TAIL(rta) \
		((struct rtattr *) (((void *) (rta)) + \
				    RTA_ALIGN((rta)->rta_len)))

#define parse_rtattr_nested(tb, max, rta) \
	(parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta)))

#define parse_rtattr_one_nested(type, rta) \
	(parse_rtattr_one(type, 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); })

static inline __u8 rta_getattr_u8(const struct rtattr *rta)
{
	return *(__u8 *)RTA_DATA(rta);
}
static inline __u16 rta_getattr_u16(const struct rtattr *rta)
{
	return *(__u16 *)RTA_DATA(rta);
}
static inline __be16 rta_getattr_be16(const struct rtattr *rta)
{
	return ntohs(rta_getattr_u16(rta));
}
static inline __u32 rta_getattr_u32(const struct rtattr *rta)
{
	return *(__u32 *)RTA_DATA(rta);
}
static inline __be32 rta_getattr_be32(const struct rtattr *rta)
{
	return ntohl(rta_getattr_u32(rta));
}
static inline __u64 rta_getattr_u64(const struct rtattr *rta)
{
	__u64 tmp;

	memcpy(&tmp, RTA_DATA(rta), sizeof(__u64));
	return tmp;
}
static inline __s32 rta_getattr_s32(const struct rtattr *rta)
{
	return *(__s32 *)RTA_DATA(rta);
}
static inline __s64 rta_getattr_s64(const struct rtattr *rta)
{
	__s64 tmp;

	memcpy(&tmp, RTA_DATA(rta), sizeof(tmp));
	return tmp;
}
static inline const char *rta_getattr_str(const struct rtattr *rta)
{
	return (const char *)RTA_DATA(rta);
}

int rtnl_listen_all_nsid(struct rtnl_handle *);
int rtnl_listen(struct rtnl_handle *, rtnl_listen_filter_t handler,
		void *jarg);
int rtnl_from_file(FILE *, rtnl_listen_filter_t handler,
		   void *jarg);

#define NLMSG_TAIL(nmsg) \
	((struct rtattr *) (((void *) (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

#ifndef NETNS_RTA
#define NETNS_RTA(r) \
	((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct rtgenmsg))))
#endif
#ifndef NETNS_PAYLOAD
#define NETNS_PAYLOAD(n)	NLMSG_PAYLOAD(n, sizeof(struct rtgenmsg))
#endif

#ifndef IFLA_STATS_RTA
#define IFLA_STATS_RTA(r) \
	((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct if_stats_msg))))
#endif

/* User defined nlmsg_type which is used mostly for logging netlink
 * messages from dump file */
#define NLMSG_TSTAMP	15

#endif /* __LIBNETLINK_H__ */
Commit	Line	Data
6054c1eb	1	/* SPDX-License-Identifier: GPL-2.0 */
aba5acdf SH	2	#ifndef __LIBNETLINK_H__
	3	#define __LIBNETLINK_H__ 1
	4
5bd9dd49	5	#include <stdio.h>
f5b830dc	6	#include <string.h>
aba5acdf SH	7	#include <asm/types.h>
	8	#include <linux/netlink.h>
	9	#include <linux/rtnetlink.h>
ead2ba70 SH	10	#include <linux/if_link.h>
	11	#include <linux/if_addr.h>
	12	#include <linux/neighbour.h>
9d0efc10	13	#include <linux/netconf.h>
aab0f610	14	#include <arpa/inet.h>
aba5acdf	15
e9e9365b	16	struct rtnl_handle {
aba5acdf SH	17	int fd;
	18	struct sockaddr_nl local;
	19	struct sockaddr_nl peer;
	20	__u32 seq;
	21	__u32 dump;
8a4025f6	22	int proto;
486ccd99	23	FILE *dump_fp;
449b824a	24	#define RTNL_HANDLE_F_LISTEN_ALL_NSID 0x01
3ad6d176	25	#define RTNL_HANDLE_F_SUPPRESS_NLERR 0x02
449b824a	26	int flags;
aba5acdf SH	27	};
aba5acdf SH	28
4ad87594 DA	29	struct nlmsg_list {
	30	struct nlmsg_list *next;
	31	struct nlmsghdr h;
	32	};
	33
	34	struct nlmsg_chain {
	35	struct nlmsg_list *head;
	36	struct nlmsg_list *tail;
	37	};
	38
7f03191f PM	39	extern int rcvbuf;
7f03191f PM	40
e9e9365b	41	int rtnl_open(struct rtnl_handle *rth, unsigned int subscriptions)
d2468da0 SH	42	__attribute__((warn_unused_result));
d2468da0 SH	43
e9e9365b	44	int rtnl_open_byproto(struct rtnl_handle *rth, unsigned int subscriptions,
d2468da0 SH	45	int protocol)
	46	__attribute__((warn_unused_result));
	47
892e2124	48	void rtnl_close(struct rtnl_handle *rth);
aea41afc	49	void rtnl_set_strict_dump(struct rtnl_handle *rth);
46917d08	50
43fd93ae DA	51	typedef int (req_filter_fn_t)(struct nlmsghdr nlh, int reqlen);
43fd93ae DA	52
88470978 DA	53	int rtnl_addrdump_req(struct rtnl_handle *rth, int family,
88470978 DA	54	req_filter_fn_t filter_fn)
46917d08	55	__attribute__((warn_unused_result));
39360023 DA	56	int rtnl_addrlbldump_req(struct rtnl_handle *rth, int family)
39360023 DA	57	__attribute__((warn_unused_result));
43fd93ae DA	58	int rtnl_routedump_req(struct rtnl_handle *rth, int family,
43fd93ae DA	59	req_filter_fn_t filter_fn)
bfb27dfa	60	__attribute__((warn_unused_result));
b05d9a3d DA	61	int rtnl_ruledump_req(struct rtnl_handle *rth, int family)
b05d9a3d DA	62	__attribute__((warn_unused_result));
f255ab12 DA	63	int rtnl_neighdump_req(struct rtnl_handle *rth, int family,
f255ab12 DA	64	req_filter_fn_t filter_fn)
9e0ab19c	65	__attribute__((warn_unused_result));
ff41db8a DA	66	int rtnl_neightbldump_req(struct rtnl_handle *rth, int family)
ff41db8a DA	67	__attribute__((warn_unused_result));
9dbe6df4 DA	68	int rtnl_mdbdump_req(struct rtnl_handle *rth, int family)
9dbe6df4 DA	69	__attribute__((warn_unused_result));
ddee16bc DA	70	int rtnl_netconfdump_req(struct rtnl_handle *rth, int family)
ddee16bc DA	71	__attribute__((warn_unused_result));
efb0b383 DA	72	int rtnl_nsiddump_req(struct rtnl_handle *rth, int family)
efb0b383 DA	73	__attribute__((warn_unused_result));
46917d08	74
31ae2912	75	int rtnl_linkdump_req(struct rtnl_handle *rth, int fam)
d2468da0	76	__attribute__((warn_unused_result));
31ae2912	77	int rtnl_linkdump_req_filter(struct rtnl_handle *rth, int fam, __u32 filt_mask)
d2468da0	78	__attribute__((warn_unused_result));
b0a4ce62	79
31ae2912	80	int rtnl_linkdump_req_filter_fn(struct rtnl_handle *rth, int fam,
b0a4ce62 DA	81	req_filter_fn_t fn)
b0a4ce62 DA	82	__attribute__((warn_unused_result));
56eeeda9	83	int rtnl_statsdump_req_filter(struct rtnl_handle *rth, int fam, __u32 filt_mask)
7abf5de6	84	__attribute__((warn_unused_result));
892e2124	85	int rtnl_dump_request(struct rtnl_handle rth, int type, void req,
d2468da0 SH	86	int len)
d2468da0 SH	87	__attribute__((warn_unused_result));
0d238ca2 DA	88	int rtnl_dump_request_n(struct rtnl_handle rth, struct nlmsghdr n)
0d238ca2 DA	89	__attribute__((warn_unused_result));
6dc9f016	90
0628cddd	91	struct rtnl_ctrl_data {
449b824a	92	int nsid;
0628cddd ND	93	};
0628cddd ND	94
cd554f2c	95	typedef int (rtnl_filter_t)(struct nlmsghdr n, void *);
b49240ec	96
cd554f2c	97	typedef int (rtnl_listen_filter_t)(struct rtnl_ctrl_data ,
0628cddd ND	98	struct nlmsghdr n, void );
0628cddd ND	99
b6432e68 SH	100	typedef int (nl_ext_ack_fn_t)(const char errmsg, uint32_t off,
	101	const struct nlmsghdr *inner_nlh);
	102
e9e9365b	103	struct rtnl_dump_filter_arg {
b49240ec SH	104	rtnl_filter_t filter;
b49240ec SH	105	void *arg1;
8e72880f	106	__u16 nc_flags;
b49240ec SH	107	};
b49240ec SH	108
8e72880f PS	109	int rtnl_dump_filter_nc(struct rtnl_handle *rth,
	110	rtnl_filter_t filter,
	111	void *arg, __u16 nc_flags);
	112	#define rtnl_dump_filter(rth, filter, arg) \
	113	rtnl_dump_filter_nc(rth, filter, arg, 0)
892e2124	114	int rtnl_talk(struct rtnl_handle rtnl, struct nlmsghdr n,
86bf43c7	115	struct nlmsghdr **answer)
d2468da0	116	__attribute__((warn_unused_result));
72a2ff39 CM	117	int rtnl_talk_iov(struct rtnl_handle rtnl, struct iovec iovec, size_t iovlen,
	118	struct nlmsghdr **answer)
	119	__attribute__((warn_unused_result));
463d9efa	120	int rtnl_talk_suppress_rtnl_errmsg(struct rtnl_handle rtnl, struct nlmsghdr n,
86bf43c7	121	struct nlmsghdr **answer)
463d9efa	122	__attribute__((warn_unused_result));
892e2124	123	int rtnl_send(struct rtnl_handle rth, const void buf, int)
d2468da0	124	__attribute__((warn_unused_result));
892e2124	125	int rtnl_send_check(struct rtnl_handle rth, const void buf, int)
d2468da0	126	__attribute__((warn_unused_result));
049c5853	127	int nl_dump_ext_ack(const struct nlmsghdr *nlh, nl_ext_ack_fn_t errfn);
aba5acdf	128
892e2124 SH	129	int addattr(struct nlmsghdr *n, int maxlen, int type);
	130	int addattr8(struct nlmsghdr *n, int maxlen, int type, __u8 data);
	131	int addattr16(struct nlmsghdr *n, int maxlen, int type, __u16 data);
	132	int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data);
	133	int addattr64(struct nlmsghdr *n, int maxlen, int type, __u64 data);
	134	int addattrstrz(struct nlmsghdr n, int maxlen, int type, const char data);
	135
	136	int addattr_l(struct nlmsghdr *n, int maxlen, int type,
	137	const void *data, int alen);
	138	int addraw_l(struct nlmsghdr n, int maxlen, const void data, int len);
	139	struct rtattr addattr_nest(struct nlmsghdr n, int maxlen, int type);
	140	int addattr_nest_end(struct nlmsghdr n, struct rtattr nest);
	141	struct rtattr addattr_nest_compat(struct nlmsghdr n, int maxlen, int type,
	142	const void *data, int len);
	143	int addattr_nest_compat_end(struct nlmsghdr n, struct rtattr nest);
303cc9cb RP	144	int rta_addattr8(struct rtattr *rta, int maxlen, int type, __u8 data);
303cc9cb RP	145	int rta_addattr16(struct rtattr *rta, int maxlen, int type, __u16 data);
892e2124	146	int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data);
303cc9cb	147	int rta_addattr64(struct rtattr *rta, int maxlen, int type, __u64 data);
892e2124 SH	148	int rta_addattr_l(struct rtattr *rta, int maxlen, int type,
	149	const void *data, int alen);
	150
	151	int parse_rtattr(struct rtattr tb[], int max, struct rtattr rta, int len);
	152	int parse_rtattr_flags(struct rtattr tb[], int max, struct rtattr rta,
b1b7ce0f	153	int len, unsigned short flags);
892e2124 SH	154	struct rtattr parse_rtattr_one(int type, struct rtattr rta, int len);
892e2124 SH	155	int __parse_rtattr_nested_compat(struct rtattr tb[], int max, struct rtattr rta, int len);
aba5acdf	156
303cc9cb RP	157	struct rtattr rta_nest(struct rtattr rta, int maxlen, int type);
	158	int rta_nest_end(struct rtattr rta, struct rtattr nest);
	159
	160	#define RTA_TAIL(rta) \
	161	((struct rtattr ) (((void ) (rta)) + \
	162	RTA_ALIGN((rta)->rta_len)))
	163
753fca4f	164	#define parse_rtattr_nested(tb, max, rta) \
	165	(parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta)))
	166
decbb437 JP	167	#define parse_rtattr_one_nested(type, rta) \
	168	(parse_rtattr_one(type, RTA_DATA(rta), RTA_PAYLOAD(rta)))
	169
2f90c9c0	170	#define parse_rtattr_nested_compat(tb, max, rta, data, len) \
cd70f3f5 SH	171	({ data = RTA_PAYLOAD(rta) >= len ? RTA_DATA(rta) : NULL; \
cd70f3f5 SH	172	__parse_rtattr_nested_compat(tb, max, rta, len); })
2f90c9c0	173
7dd03712 SH	174	static inline __u8 rta_getattr_u8(const struct rtattr *rta)
	175	{
	176	return (__u8 )RTA_DATA(rta);
	177	}
46c5d64d SH	178	static inline __u16 rta_getattr_u16(const struct rtattr *rta)
	179	{
	180	return (__u16 )RTA_DATA(rta);
	181	}
aab0f610 AV	182	static inline __be16 rta_getattr_be16(const struct rtattr *rta)
	183	{
	184	return ntohs(rta_getattr_u16(rta));
	185	}
7dd03712	186	static inline __u32 rta_getattr_u32(const struct rtattr *rta)
46c5d64d SH	187	{
	188	return (__u32 )RTA_DATA(rta);
	189	}
aab0f610 AV	190	static inline __be32 rta_getattr_be32(const struct rtattr *rta)
	191	{
	192	return ntohl(rta_getattr_u32(rta));
	193	}
46c5d64d SH	194	static inline __u64 rta_getattr_u64(const struct rtattr *rta)
	195	{
	196	__u64 tmp;
e9e9365b	197
46c5d64d SH	198	memcpy(&tmp, RTA_DATA(rta), sizeof(__u64));
	199	return tmp;
	200	}
d791f3ad JSP	201	static inline __s32 rta_getattr_s32(const struct rtattr *rta)
	202	{
	203	return (__s32 )RTA_DATA(rta);
	204	}
de63cd90 VCG	205	static inline __s64 rta_getattr_s64(const struct rtattr *rta)
	206	{
	207	__s64 tmp;
	208
	209	memcpy(&tmp, RTA_DATA(rta), sizeof(tmp));
	210	return tmp;
	211	}
46c5d64d SH	212	static inline const char rta_getattr_str(const struct rtattr rta)
46c5d64d SH	213	{
cfd2cbd1	214	return (const char *)RTA_DATA(rta);
46c5d64d SH	215	}
46c5d64d SH	216
892e2124 SH	217	int rtnl_listen_all_nsid(struct rtnl_handle *);
	218	int rtnl_listen(struct rtnl_handle *, rtnl_listen_filter_t handler,
	219	void *jarg);
	220	int rtnl_from_file(FILE *, rtnl_listen_filter_t handler,
	221	void *jarg);
aba5acdf	222
370d67ba	223	#define NLMSG_TAIL(nmsg) \
	224	((struct rtattr ) (((void ) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
	225
ead2ba70 SH	226	#ifndef IFA_RTA
ead2ba70 SH	227	#define IFA_RTA(r) \
e9e9365b	228	((struct rtattr )(((char )(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
ead2ba70 SH	229	#endif
ead2ba70 SH	230	#ifndef IFA_PAYLOAD
e9e9365b	231	#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct ifaddrmsg))
ead2ba70 SH	232	#endif
	233
	234	#ifndef IFLA_RTA
	235	#define IFLA_RTA(r) \
e9e9365b	236	((struct rtattr )(((char )(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg))))
ead2ba70 SH	237	#endif
ead2ba70 SH	238	#ifndef IFLA_PAYLOAD
e9e9365b	239	#define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct ifinfomsg))
ead2ba70 SH	240	#endif
	241
	242	#ifndef NDA_RTA
	243	#define NDA_RTA(r) \
e9e9365b	244	((struct rtattr )(((char )(r)) + NLMSG_ALIGN(sizeof(struct ndmsg))))
ead2ba70 SH	245	#endif
ead2ba70 SH	246	#ifndef NDA_PAYLOAD
e9e9365b	247	#define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct ndmsg))
ead2ba70 SH	248	#endif
	249
	250	#ifndef NDTA_RTA
	251	#define NDTA_RTA(r) \
e9e9365b	252	((struct rtattr )(((char )(r)) + NLMSG_ALIGN(sizeof(struct ndtmsg))))
ead2ba70 SH	253	#endif
ead2ba70 SH	254	#ifndef NDTA_PAYLOAD
e9e9365b	255	#define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct ndtmsg))
ead2ba70 SH	256	#endif
ead2ba70 SH	257
d182ee13 ND	258	#ifndef NETNS_RTA
d182ee13 ND	259	#define NETNS_RTA(r) \
e9e9365b	260	((struct rtattr )(((char )(r)) + NLMSG_ALIGN(sizeof(struct rtgenmsg))))
d182ee13 ND	261	#endif
d182ee13 ND	262	#ifndef NETNS_PAYLOAD
e9e9365b	263	#define NETNS_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct rtgenmsg))
d182ee13 ND	264	#endif
d182ee13 ND	265
7abf5de6 NA	266	#ifndef IFLA_STATS_RTA
	267	#define IFLA_STATS_RTA(r) \
	268	((struct rtattr )(((char )(r)) + NLMSG_ALIGN(sizeof(struct if_stats_msg))))
	269	#endif
	270
27b14f2e VK	271	/* User defined nlmsg_type which is used mostly for logging netlink
	272	* messages from dump file */
	273	#define NLMSG_TSTAMP 15
	274
aba5acdf	275	#endif /* __LIBNETLINK_H__ */