Linux kernel mirror (for testing)
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linux
1#ifndef __LINUX_IP_NETFILTER_H
2#define __LINUX_IP_NETFILTER_H
3
4/* IPv4-specific defines for netfilter.
5 * (C)1998 Rusty Russell -- This code is GPL.
6 */
7
8#include <linux/config.h>
9#include <linux/netfilter.h>
10
11/* only for userspace compatibility */
12#ifndef __KERNEL__
13/* IP Cache bits. */
14/* Src IP address. */
15#define NFC_IP_SRC 0x0001
16/* Dest IP address. */
17#define NFC_IP_DST 0x0002
18/* Input device. */
19#define NFC_IP_IF_IN 0x0004
20/* Output device. */
21#define NFC_IP_IF_OUT 0x0008
22/* TOS. */
23#define NFC_IP_TOS 0x0010
24/* Protocol. */
25#define NFC_IP_PROTO 0x0020
26/* IP options. */
27#define NFC_IP_OPTIONS 0x0040
28/* Frag & flags. */
29#define NFC_IP_FRAG 0x0080
30
31/* Per-protocol information: only matters if proto match. */
32/* TCP flags. */
33#define NFC_IP_TCPFLAGS 0x0100
34/* Source port. */
35#define NFC_IP_SRC_PT 0x0200
36/* Dest port. */
37#define NFC_IP_DST_PT 0x0400
38/* Something else about the proto */
39#define NFC_IP_PROTO_UNKNOWN 0x2000
40#endif /* ! __KERNEL__ */
41
42/* IP Hooks */
43/* After promisc drops, checksum checks. */
44#define NF_IP_PRE_ROUTING 0
45/* If the packet is destined for this box. */
46#define NF_IP_LOCAL_IN 1
47/* If the packet is destined for another interface. */
48#define NF_IP_FORWARD 2
49/* Packets coming from a local process. */
50#define NF_IP_LOCAL_OUT 3
51/* Packets about to hit the wire. */
52#define NF_IP_POST_ROUTING 4
53#define NF_IP_NUMHOOKS 5
54
55enum nf_ip_hook_priorities {
56 NF_IP_PRI_FIRST = INT_MIN,
57 NF_IP_PRI_CONNTRACK_DEFRAG = -400,
58 NF_IP_PRI_RAW = -300,
59 NF_IP_PRI_SELINUX_FIRST = -225,
60 NF_IP_PRI_CONNTRACK = -200,
61 NF_IP_PRI_BRIDGE_SABOTAGE_FORWARD = -175,
62 NF_IP_PRI_MANGLE = -150,
63 NF_IP_PRI_NAT_DST = -100,
64 NF_IP_PRI_BRIDGE_SABOTAGE_LOCAL_OUT = -50,
65 NF_IP_PRI_FILTER = 0,
66 NF_IP_PRI_NAT_SRC = 100,
67 NF_IP_PRI_SELINUX_LAST = 225,
68 NF_IP_PRI_CONNTRACK_HELPER = INT_MAX - 2,
69 NF_IP_PRI_NAT_SEQ_ADJUST = INT_MAX - 1,
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#ifdef __KERNEL__
81extern int ip_route_me_harder(struct sk_buff **pskb);
82
83#endif /*__KERNEL__*/
84
85#endif /*__LINUX_IP_NETFILTER_H*/