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