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e2be04c7 | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
607ca46e DH |
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 | ||
607ca46e DH |
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, | |
902d6a4c | 32 | NF_IP_PRI_RAW_BEFORE_DEFRAG = -450, |
607ca46e DH |
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 */ |