1/****************************************************************************
2 ****************************************************************************
3 ***
4 ***   This header was automatically generated from a Linux kernel header
5 ***   of the same name, to make information necessary for userspace to
6 ***   call into the kernel available to libc.  It contains only constants,
7 ***   structures, and macros generated from the original header, and thus,
8 ***   contains no copyrightable information.
9 ***
10 ****************************************************************************
11 ****************************************************************************/
12#ifndef _NFNETLINK_H
13#define _NFNETLINK_H
14#include <linux/types.h>
15
16#define NF_NETLINK_CONNTRACK_NEW 0x00000001
17#define NF_NETLINK_CONNTRACK_UPDATE 0x00000002
18#define NF_NETLINK_CONNTRACK_DESTROY 0x00000004
19#define NF_NETLINK_CONNTRACK_EXP_NEW 0x00000008
20#define NF_NETLINK_CONNTRACK_EXP_UPDATE 0x00000010
21#define NF_NETLINK_CONNTRACK_EXP_DESTROY 0x00000020
22
23enum nfnetlink_groups {
24 NFNLGRP_NONE,
25#define NFNLGRP_NONE NFNLGRP_NONE
26 NFNLGRP_CONNTRACK_NEW,
27#define NFNLGRP_CONNTRACK_NEW NFNLGRP_CONNTRACK_NEW
28 NFNLGRP_CONNTRACK_UPDATE,
29#define NFNLGRP_CONNTRACK_UPDATE NFNLGRP_CONNTRACK_UPDATE
30 NFNLGRP_CONNTRACK_DESTROY,
31#define NFNLGRP_CONNTRACK_DESTROY NFNLGRP_CONNTRACK_DESTROY
32 NFNLGRP_CONNTRACK_EXP_NEW,
33#define NFNLGRP_CONNTRACK_EXP_NEW NFNLGRP_CONNTRACK_EXP_NEW
34 NFNLGRP_CONNTRACK_EXP_UPDATE,
35#define NFNLGRP_CONNTRACK_EXP_UPDATE NFNLGRP_CONNTRACK_EXP_UPDATE
36 NFNLGRP_CONNTRACK_EXP_DESTROY,
37#define NFNLGRP_CONNTRACK_EXP_DESTROY NFNLGRP_CONNTRACK_EXP_DESTROY
38 __NFNLGRP_MAX,
39};
40#define NFNLGRP_MAX (__NFNLGRP_MAX - 1)
41
42struct nfattr
43{
44 u_int16_t nfa_len;
45 u_int16_t nfa_type;
46} __attribute__ ((packed));
47
48#define NFNL_NFA_NEST 0x8000
49#define NFA_TYPE(attr) ((attr)->nfa_type & 0x7fff)
50
51#define NFA_ALIGNTO 4
52#define NFA_ALIGN(len) (((len) + NFA_ALIGNTO - 1) & ~(NFA_ALIGNTO - 1))
53#define NFA_OK(nfa,len) ((len) > 0 && (nfa)->nfa_len >= sizeof(struct nfattr)   && (nfa)->nfa_len <= (len))
54#define NFA_NEXT(nfa,attrlen) ((attrlen) -= NFA_ALIGN((nfa)->nfa_len),   (struct nfattr *)(((char *)(nfa)) + NFA_ALIGN((nfa)->nfa_len)))
55#define NFA_LENGTH(len) (NFA_ALIGN(sizeof(struct nfattr)) + (len))
56#define NFA_SPACE(len) NFA_ALIGN(NFA_LENGTH(len))
57#define NFA_DATA(nfa) ((void *)(((char *)(nfa)) + NFA_LENGTH(0)))
58#define NFA_PAYLOAD(nfa) ((int)((nfa)->nfa_len) - NFA_LENGTH(0))
59#define NFA_NEST(skb, type)  ({ struct nfattr *__start = (struct nfattr *) (skb)->tail;   NFA_PUT(skb, (NFNL_NFA_NEST | type), 0, NULL);   __start; })
60#define NFA_NEST_END(skb, start)  ({ (start)->nfa_len = ((skb)->tail - (unsigned char *) (start));   (skb)->len; })
61#define NFA_NEST_CANCEL(skb, start)  ({ if (start)   skb_trim(skb, (unsigned char *) (start) - (skb)->data);   -1; })
62
63struct nfgenmsg {
64 u_int8_t nfgen_family;
65 u_int8_t version;
66 u_int16_t res_id;
67} __attribute__ ((packed));
68
69#define NFNETLINK_V0 0
70
71#define NFM_NFA(n) ((struct nfattr *)(((char *)(n))   + NLMSG_ALIGN(sizeof(struct nfgenmsg))))
72#define NFM_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct nfgenmsg))
73
74#define NFNL_SUBSYS_ID(x) ((x & 0xff00) >> 8)
75#define NFNL_MSG_TYPE(x) (x & 0x00ff)
76
77#define NFNL_SUBSYS_NONE 0
78#define NFNL_SUBSYS_CTNETLINK 1
79#define NFNL_SUBSYS_CTNETLINK_EXP 2
80#define NFNL_SUBSYS_QUEUE 3
81#define NFNL_SUBSYS_ULOG 4
82#define NFNL_SUBSYS_COUNT 5
83
84#endif
85