1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
2 | /* IPv4-specific defines for netfilter. |
3 | * (C)1998 Rusty Russell -- This code is GPL. |
4 | */ |
5 | #ifndef _UAPI__LINUX_IP_NETFILTER_H |
6 | #define _UAPI__LINUX_IP_NETFILTER_H |
7 | |
8 | |
9 | #include <linux/netfilter.h> |
10 | |
11 | /* only for userspace compatibility */ |
12 | #ifndef __KERNEL__ |
13 | |
14 | #include <limits.h> /* for INT_MIN, INT_MAX */ |
15 | |
16 | /* IP Hooks */ |
17 | /* After promisc drops, checksum checks. */ |
18 | #define NF_IP_PRE_ROUTING 0 |
19 | /* If the packet is destined for this box. */ |
20 | #define NF_IP_LOCAL_IN 1 |
21 | /* If the packet is destined for another interface. */ |
22 | #define NF_IP_FORWARD 2 |
23 | /* Packets coming from a local process. */ |
24 | #define NF_IP_LOCAL_OUT 3 |
25 | /* Packets about to hit the wire. */ |
26 | #define NF_IP_POST_ROUTING 4 |
27 | #define NF_IP_NUMHOOKS 5 |
28 | #endif /* ! __KERNEL__ */ |
29 | |
30 | enum nf_ip_hook_priorities { |
31 | NF_IP_PRI_FIRST = INT_MIN, |
32 | NF_IP_PRI_RAW_BEFORE_DEFRAG = -450, |
33 | NF_IP_PRI_CONNTRACK_DEFRAG = -400, |
34 | NF_IP_PRI_RAW = -300, |
35 | NF_IP_PRI_SELINUX_FIRST = -225, |
36 | NF_IP_PRI_CONNTRACK = -200, |
37 | NF_IP_PRI_MANGLE = -150, |
38 | NF_IP_PRI_NAT_DST = -100, |
39 | NF_IP_PRI_FILTER = 0, |
40 | NF_IP_PRI_SECURITY = 50, |
41 | NF_IP_PRI_NAT_SRC = 100, |
42 | NF_IP_PRI_SELINUX_LAST = 225, |
43 | NF_IP_PRI_CONNTRACK_HELPER = 300, |
44 | NF_IP_PRI_CONNTRACK_CONFIRM = INT_MAX, |
45 | NF_IP_PRI_LAST = INT_MAX, |
46 | }; |
47 | |
48 | /* Arguments for setsockopt SOL_IP: */ |
49 | /* 2.0 firewalling went from 64 through 71 (and +256, +512, etc). */ |
50 | /* 2.2 firewalling (+ masq) went from 64 through 76 */ |
51 | /* 2.4 firewalling went 64 through 67. */ |
52 | #define SO_ORIGINAL_DST 80 |
53 | |
54 | |
55 | #endif /* _UAPI__LINUX_IP_NETFILTER_H */ |
56 | |