1e2be04c7SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2607ca46eSDavid Howells /* IPv4-specific defines for netfilter. 3607ca46eSDavid Howells * (C)1998 Rusty Russell -- This code is GPL. 4607ca46eSDavid Howells */ 5607ca46eSDavid Howells #ifndef _UAPI__LINUX_IP_NETFILTER_H 6607ca46eSDavid Howells #define _UAPI__LINUX_IP_NETFILTER_H 7607ca46eSDavid Howells 8607ca46eSDavid Howells 9607ca46eSDavid Howells #include <linux/netfilter.h> 10607ca46eSDavid Howells 11607ca46eSDavid Howells /* only for userspace compatibility */ 12607ca46eSDavid Howells #ifndef __KERNEL__ 13607ca46eSDavid Howells 14607ca46eSDavid Howells #include <limits.h> /* for INT_MIN, INT_MAX */ 15607ca46eSDavid Howells 16607ca46eSDavid Howells /* IP Hooks */ 17607ca46eSDavid Howells /* After promisc drops, checksum checks. */ 18607ca46eSDavid Howells #define NF_IP_PRE_ROUTING 0 19607ca46eSDavid Howells /* If the packet is destined for this box. */ 20607ca46eSDavid Howells #define NF_IP_LOCAL_IN 1 21607ca46eSDavid Howells /* If the packet is destined for another interface. */ 22607ca46eSDavid Howells #define NF_IP_FORWARD 2 23607ca46eSDavid Howells /* Packets coming from a local process. */ 24607ca46eSDavid Howells #define NF_IP_LOCAL_OUT 3 25607ca46eSDavid Howells /* Packets about to hit the wire. */ 26607ca46eSDavid Howells #define NF_IP_POST_ROUTING 4 27607ca46eSDavid Howells #define NF_IP_NUMHOOKS 5 28607ca46eSDavid Howells #endif /* ! __KERNEL__ */ 29607ca46eSDavid Howells 30607ca46eSDavid Howells enum nf_ip_hook_priorities { 31607ca46eSDavid Howells NF_IP_PRI_FIRST = INT_MIN, 32*902d6a4cSSubash Abhinov Kasiviswanathan NF_IP_PRI_RAW_BEFORE_DEFRAG = -450, 33607ca46eSDavid Howells NF_IP_PRI_CONNTRACK_DEFRAG = -400, 34607ca46eSDavid Howells NF_IP_PRI_RAW = -300, 35607ca46eSDavid Howells NF_IP_PRI_SELINUX_FIRST = -225, 36607ca46eSDavid Howells NF_IP_PRI_CONNTRACK = -200, 37607ca46eSDavid Howells NF_IP_PRI_MANGLE = -150, 38607ca46eSDavid Howells NF_IP_PRI_NAT_DST = -100, 39607ca46eSDavid Howells NF_IP_PRI_FILTER = 0, 40607ca46eSDavid Howells NF_IP_PRI_SECURITY = 50, 41607ca46eSDavid Howells NF_IP_PRI_NAT_SRC = 100, 42607ca46eSDavid Howells NF_IP_PRI_SELINUX_LAST = 225, 43607ca46eSDavid Howells NF_IP_PRI_CONNTRACK_HELPER = 300, 44607ca46eSDavid Howells NF_IP_PRI_CONNTRACK_CONFIRM = INT_MAX, 45607ca46eSDavid Howells NF_IP_PRI_LAST = INT_MAX, 46607ca46eSDavid Howells }; 47607ca46eSDavid Howells 48607ca46eSDavid Howells /* Arguments for setsockopt SOL_IP: */ 49607ca46eSDavid Howells /* 2.0 firewalling went from 64 through 71 (and +256, +512, etc). */ 50607ca46eSDavid Howells /* 2.2 firewalling (+ masq) went from 64 through 76 */ 51607ca46eSDavid Howells /* 2.4 firewalling went 64 through 67. */ 52607ca46eSDavid Howells #define SO_ORIGINAL_DST 80 53607ca46eSDavid Howells 54607ca46eSDavid Howells 55607ca46eSDavid Howells #endif /* _UAPI__LINUX_IP_NETFILTER_H */ 56