nfnetlink_compat.h revision 96c1db7b9d601c31d103389cac074a6cce0d7633 
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 ***   To edit the content of this header, modify the corresponding
11 ***   source file (e.g. under external/kernel-headers/original/) then
12 ***   run bionic/libc/kernel/tools/update_all.py
13 ***
14 ***   Any manual change here will be lost the next time this script will
15 ***   be run. You've been warned!
16 ***
17 ****************************************************************************
18 ****************************************************************************/
19#ifndef _NFNETLINK_COMPAT_H
20#define _NFNETLINK_COMPAT_H
21#include <linux/types.h>
22#define NF_NETLINK_CONNTRACK_NEW 0x00000001
23#define NF_NETLINK_CONNTRACK_UPDATE 0x00000002
24#define NF_NETLINK_CONNTRACK_DESTROY 0x00000004
25#define NF_NETLINK_CONNTRACK_EXP_NEW 0x00000008
26#define NF_NETLINK_CONNTRACK_EXP_UPDATE 0x00000010
27#define NF_NETLINK_CONNTRACK_EXP_DESTROY 0x00000020
28struct nfattr {
29  __u16 nfa_len;
30  __u16 nfa_type;
31};
32#define NFNL_NFA_NEST 0x8000
33#define NFA_TYPE(attr) ((attr)->nfa_type & 0x7fff)
34#define NFA_ALIGNTO 4
35#define NFA_ALIGN(len) (((len) + NFA_ALIGNTO - 1) & ~(NFA_ALIGNTO - 1))
36#define NFA_OK(nfa,len) ((len) > 0 && (nfa)->nfa_len >= sizeof(struct nfattr) && (nfa)->nfa_len <= (len))
37#define NFA_NEXT(nfa,attrlen) ((attrlen) -= NFA_ALIGN((nfa)->nfa_len), (struct nfattr *) (((char *) (nfa)) + NFA_ALIGN((nfa)->nfa_len)))
38#define NFA_LENGTH(len) (NFA_ALIGN(sizeof(struct nfattr)) + (len))
39#define NFA_SPACE(len) NFA_ALIGN(NFA_LENGTH(len))
40#define NFA_DATA(nfa) ((void *) (((char *) (nfa)) + NFA_LENGTH(0)))
41#define NFA_PAYLOAD(nfa) ((int) ((nfa)->nfa_len) - NFA_LENGTH(0))
42#define NFA_NEST(skb,type) \
43({ struct nfattr * __start = (struct nfattr *) skb_tail_pointer(skb); NFA_PUT(skb, (NFNL_NFA_NEST | type), 0, NULL); __start; })
44#define NFA_NEST_END(skb,start) \
45({ (start)->nfa_len = skb_tail_pointer(skb) - (unsigned char *) (start); (skb)->len; })
46#define NFA_NEST_CANCEL(skb,start) \
47({ if(start) skb_trim(skb, (unsigned char *) (start) - (skb)->data); - 1; })
48#define NFM_NFA(n) ((struct nfattr *) (((char *) (n)) + NLMSG_ALIGN(sizeof(struct nfgenmsg))))
49#define NFM_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct nfgenmsg))
50#endif
51