netfilter_ipv4.h (1548B)
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 30enum 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 */