| Christopher Ferris | 2598113 | 2017-11-14 16:53:49 -0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| Ben Cheng | 30692c6 | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 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 Cache bits. */ |
| 17 | /* Src IP address. */ |
| 18 | #define NFC_IP_SRC 0x0001 |
| 19 | /* Dest IP address. */ |
| 20 | #define NFC_IP_DST 0x0002 |
| 21 | /* Input device. */ |
| 22 | #define NFC_IP_IF_IN 0x0004 |
| 23 | /* Output device. */ |
| 24 | #define NFC_IP_IF_OUT 0x0008 |
| 25 | /* TOS. */ |
| 26 | #define NFC_IP_TOS 0x0010 |
| 27 | /* Protocol. */ |
| 28 | #define NFC_IP_PROTO 0x0020 |
| 29 | /* IP options. */ |
| 30 | #define NFC_IP_OPTIONS 0x0040 |
| 31 | /* Frag & flags. */ |
| 32 | #define NFC_IP_FRAG 0x0080 |
| 33 | |
| 34 | /* Per-protocol information: only matters if proto match. */ |
| 35 | /* TCP flags. */ |
| 36 | #define NFC_IP_TCPFLAGS 0x0100 |
| 37 | /* Source port. */ |
| 38 | #define NFC_IP_SRC_PT 0x0200 |
| 39 | /* Dest port. */ |
| 40 | #define NFC_IP_DST_PT 0x0400 |
| 41 | /* Something else about the proto */ |
| 42 | #define NFC_IP_PROTO_UNKNOWN 0x2000 |
| 43 | |
| 44 | /* IP Hooks */ |
| 45 | /* After promisc drops, checksum checks. */ |
| 46 | #define NF_IP_PRE_ROUTING 0 |
| 47 | /* If the packet is destined for this box. */ |
| 48 | #define NF_IP_LOCAL_IN 1 |
| 49 | /* If the packet is destined for another interface. */ |
| 50 | #define NF_IP_FORWARD 2 |
| 51 | /* Packets coming from a local process. */ |
| 52 | #define NF_IP_LOCAL_OUT 3 |
| 53 | /* Packets about to hit the wire. */ |
| 54 | #define NF_IP_POST_ROUTING 4 |
| 55 | #define NF_IP_NUMHOOKS 5 |
| 56 | #endif /* ! __KERNEL__ */ |
| 57 | |
| 58 | enum nf_ip_hook_priorities { |
| 59 | NF_IP_PRI_FIRST = INT_MIN, |
| 60 | NF_IP_PRI_CONNTRACK_DEFRAG = -400, |
| 61 | NF_IP_PRI_RAW = -300, |
| 62 | NF_IP_PRI_SELINUX_FIRST = -225, |
| 63 | NF_IP_PRI_CONNTRACK = -200, |
| 64 | NF_IP_PRI_MANGLE = -150, |
| 65 | NF_IP_PRI_NAT_DST = -100, |
| 66 | NF_IP_PRI_FILTER = 0, |
| 67 | NF_IP_PRI_SECURITY = 50, |
| 68 | NF_IP_PRI_NAT_SRC = 100, |
| 69 | NF_IP_PRI_SELINUX_LAST = 225, |
| 70 | NF_IP_PRI_CONNTRACK_HELPER = 300, |
| 71 | NF_IP_PRI_CONNTRACK_CONFIRM = INT_MAX, |
| 72 | NF_IP_PRI_LAST = INT_MAX, |
| 73 | }; |
| 74 | |
| 75 | /* Arguments for setsockopt SOL_IP: */ |
| 76 | /* 2.0 firewalling went from 64 through 71 (and +256, +512, etc). */ |
| 77 | /* 2.2 firewalling (+ masq) went from 64 through 76 */ |
| 78 | /* 2.4 firewalling went 64 through 67. */ |
| 79 | #define SO_ORIGINAL_DST 80 |
| 80 | |
| 81 | |
| 82 | #endif /* _UAPI__LINUX_IP_NETFILTER_H */ |