1/* IPv4-specific defines for netfilter.
2 * (C)1998 Rusty Russell -- This code is GPL.
3 */
4#ifndef _UAPI__LINUX_IP_NETFILTER_H
5#define _UAPI__LINUX_IP_NETFILTER_H
6
7
8#include <linux/netfilter.h>
9
10/* only for userspace compatibility */
11#ifndef __KERNEL__
12
13#include <limits.h> /* for INT_MIN, INT_MAX */
14
15/* IP Cache bits. */
16/* Src IP address. */
17#define NFC_IP_SRC		0x0001
18/* Dest IP address. */
19#define NFC_IP_DST		0x0002
20/* Input device. */
21#define NFC_IP_IF_IN		0x0004
22/* Output device. */
23#define NFC_IP_IF_OUT		0x0008
24/* TOS. */
25#define NFC_IP_TOS		0x0010
26/* Protocol. */
27#define NFC_IP_PROTO		0x0020
28/* IP options. */
29#define NFC_IP_OPTIONS		0x0040
30/* Frag & flags. */
31#define NFC_IP_FRAG		0x0080
32
33/* Per-protocol information: only matters if proto match. */
34/* TCP flags. */
35#define NFC_IP_TCPFLAGS		0x0100
36/* Source port. */
37#define NFC_IP_SRC_PT		0x0200
38/* Dest port. */
39#define NFC_IP_DST_PT		0x0400
40/* Something else about the proto */
41#define NFC_IP_PROTO_UNKNOWN	0x2000
42
43/* IP Hooks */
44/* After promisc drops, checksum checks. */
45#define NF_IP_PRE_ROUTING	0
46/* If the packet is destined for this box. */
47#define NF_IP_LOCAL_IN		1
48/* If the packet is destined for another interface. */
49#define NF_IP_FORWARD		2
50/* Packets coming from a local process. */
51#define NF_IP_LOCAL_OUT		3
52/* Packets about to hit the wire. */
53#define NF_IP_POST_ROUTING	4
54#define NF_IP_NUMHOOKS		5
55#endif /* ! __KERNEL__ */
56
57enum nf_ip_hook_priorities {
58	NF_IP_PRI_FIRST = INT_MIN,
59	NF_IP_PRI_CONNTRACK_DEFRAG = -400,
60	NF_IP_PRI_RAW = -300,
61	NF_IP_PRI_SELINUX_FIRST = -225,
62	NF_IP_PRI_CONNTRACK = -200,
63	NF_IP_PRI_MANGLE = -150,
64	NF_IP_PRI_NAT_DST = -100,
65	NF_IP_PRI_FILTER = 0,
66	NF_IP_PRI_SECURITY = 50,
67	NF_IP_PRI_NAT_SRC = 100,
68	NF_IP_PRI_SELINUX_LAST = 225,
69	NF_IP_PRI_CONNTRACK_HELPER = 300,
70	NF_IP_PRI_CONNTRACK_CONFIRM = INT_MAX,
71	NF_IP_PRI_LAST = INT_MAX,
72};
73
74/* Arguments for setsockopt SOL_IP: */
75/* 2.0 firewalling went from 64 through 71 (and +256, +512, etc). */
76/* 2.2 firewalling (+ masq) went from 64 through 76 */
77/* 2.4 firewalling went 64 through 67. */
78#define SO_ORIGINAL_DST 80
79
80
81#endif /* _UAPI__LINUX_IP_NETFILTER_H */
82