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1#ifndef __LINUX_IP6_NETFILTER_H
2#define __LINUX_IP6_NETFILTER_H
3
4/* IPv6-specific defines for netfilter.
5 * (C)1998 Rusty Russell -- This code is GPL.
6 * (C)1999 David Jeffery
7 * this header was blatantly ripped from netfilter_ipv4.h
8 * it's amazing what adding a bunch of 6s can do =8^)
9 */
10
11#include <linux/netfilter.h>
12
13/* only for userspace compatibility */
14#ifndef __KERNEL__
15/* IP Cache bits. */
16/* Src IP address. */
17#define NFC_IP6_SRC 0x0001
18/* Dest IP address. */
19#define NFC_IP6_DST 0x0002
20/* Input device. */
21#define NFC_IP6_IF_IN 0x0004
22/* Output device. */
23#define NFC_IP6_IF_OUT 0x0008
24/* TOS. */
25#define NFC_IP6_TOS 0x0010
26/* Protocol. */
27#define NFC_IP6_PROTO 0x0020
28/* IP options. */
29#define NFC_IP6_OPTIONS 0x0040
30/* Frag & flags. */
31#define NFC_IP6_FRAG 0x0080
32
33
34/* Per-protocol information: only matters if proto match. */
35/* TCP flags. */
36#define NFC_IP6_TCPFLAGS 0x0100
37/* Source port. */
38#define NFC_IP6_SRC_PT 0x0200
39/* Dest port. */
40#define NFC_IP6_DST_PT 0x0400
41/* Something else about the proto */
42#define NFC_IP6_PROTO_UNKNOWN 0x2000
43#endif /* ! __KERNEL__ */
44
45
46/* IP6 Hooks */
47/* After promisc drops, checksum checks. */
48#define NF_IP6_PRE_ROUTING 0
49/* If the packet is destined for this box. */
50#define NF_IP6_LOCAL_IN 1
51/* If the packet is destined for another interface. */
52#define NF_IP6_FORWARD 2
53/* Packets coming from a local process. */
54#define NF_IP6_LOCAL_OUT 3
55/* Packets about to hit the wire. */
56#define NF_IP6_POST_ROUTING 4
57#define NF_IP6_NUMHOOKS 5
58
59
60enum nf_ip6_hook_priorities {
61 NF_IP6_PRI_FIRST = INT_MIN,
62 NF_IP6_PRI_CONNTRACK_DEFRAG = -400,
63 NF_IP6_PRI_SELINUX_FIRST = -225,
64 NF_IP6_PRI_CONNTRACK = -200,
65 NF_IP6_PRI_MANGLE = -150,
66 NF_IP6_PRI_NAT_DST = -100,
67 NF_IP6_PRI_FILTER = 0,
68 NF_IP6_PRI_NAT_SRC = 100,
69 NF_IP6_PRI_SELINUX_LAST = 225,
70 NF_IP6_PRI_LAST = INT_MAX,
71};
72
73#ifdef CONFIG_NETFILTER
74extern int ip6_route_me_harder(struct sk_buff *skb);
75extern __sum16 nf_ip6_checksum(struct sk_buff *skb, unsigned int hook,
76 unsigned int dataoff, u_int8_t protocol);
77
78extern int ipv6_netfilter_init(void);
79extern void ipv6_netfilter_fini(void);
80#else /* CONFIG_NETFILTER */
81static inline int ipv6_netfilter_init(void) { return 0; }
82static inline void ipv6_netfilter_fini(void) { return; }
83#endif /* CONFIG_NETFILTER */
84
85#endif /*__LINUX_IP6_NETFILTER_H*/