1*e2be04c7SGreg 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 Cache bits. */ 17607ca46eSDavid Howells /* Src IP address. */ 18607ca46eSDavid Howells #define NFC_IP_SRC 0x0001 19607ca46eSDavid Howells /* Dest IP address. */ 20607ca46eSDavid Howells #define NFC_IP_DST 0x0002 21607ca46eSDavid Howells /* Input device. */ 22607ca46eSDavid Howells #define NFC_IP_IF_IN 0x0004 23607ca46eSDavid Howells /* Output device. */ 24607ca46eSDavid Howells #define NFC_IP_IF_OUT 0x0008 25607ca46eSDavid Howells /* TOS. */ 26607ca46eSDavid Howells #define NFC_IP_TOS 0x0010 27607ca46eSDavid Howells /* Protocol. */ 28607ca46eSDavid Howells #define NFC_IP_PROTO 0x0020 29607ca46eSDavid Howells /* IP options. */ 30607ca46eSDavid Howells #define NFC_IP_OPTIONS 0x0040 31607ca46eSDavid Howells /* Frag & flags. */ 32607ca46eSDavid Howells #define NFC_IP_FRAG 0x0080 33607ca46eSDavid Howells 34607ca46eSDavid Howells /* Per-protocol information: only matters if proto match. */ 35607ca46eSDavid Howells /* TCP flags. */ 36607ca46eSDavid Howells #define NFC_IP_TCPFLAGS 0x0100 37607ca46eSDavid Howells /* Source port. */ 38607ca46eSDavid Howells #define NFC_IP_SRC_PT 0x0200 39607ca46eSDavid Howells /* Dest port. */ 40607ca46eSDavid Howells #define NFC_IP_DST_PT 0x0400 41607ca46eSDavid Howells /* Something else about the proto */ 42607ca46eSDavid Howells #define NFC_IP_PROTO_UNKNOWN 0x2000 43607ca46eSDavid Howells 44607ca46eSDavid Howells /* IP Hooks */ 45607ca46eSDavid Howells /* After promisc drops, checksum checks. */ 46607ca46eSDavid Howells #define NF_IP_PRE_ROUTING 0 47607ca46eSDavid Howells /* If the packet is destined for this box. */ 48607ca46eSDavid Howells #define NF_IP_LOCAL_IN 1 49607ca46eSDavid Howells /* If the packet is destined for another interface. */ 50607ca46eSDavid Howells #define NF_IP_FORWARD 2 51607ca46eSDavid Howells /* Packets coming from a local process. */ 52607ca46eSDavid Howells #define NF_IP_LOCAL_OUT 3 53607ca46eSDavid Howells /* Packets about to hit the wire. */ 54607ca46eSDavid Howells #define NF_IP_POST_ROUTING 4 55607ca46eSDavid Howells #define NF_IP_NUMHOOKS 5 56607ca46eSDavid Howells #endif /* ! __KERNEL__ */ 57607ca46eSDavid Howells 58607ca46eSDavid Howells enum nf_ip_hook_priorities { 59607ca46eSDavid Howells NF_IP_PRI_FIRST = INT_MIN, 60607ca46eSDavid Howells NF_IP_PRI_CONNTRACK_DEFRAG = -400, 61607ca46eSDavid Howells NF_IP_PRI_RAW = -300, 62607ca46eSDavid Howells NF_IP_PRI_SELINUX_FIRST = -225, 63607ca46eSDavid Howells NF_IP_PRI_CONNTRACK = -200, 64607ca46eSDavid Howells NF_IP_PRI_MANGLE = -150, 65607ca46eSDavid Howells NF_IP_PRI_NAT_DST = -100, 66607ca46eSDavid Howells NF_IP_PRI_FILTER = 0, 67607ca46eSDavid Howells NF_IP_PRI_SECURITY = 50, 68607ca46eSDavid Howells NF_IP_PRI_NAT_SRC = 100, 69607ca46eSDavid Howells NF_IP_PRI_SELINUX_LAST = 225, 70607ca46eSDavid Howells NF_IP_PRI_CONNTRACK_HELPER = 300, 71607ca46eSDavid Howells NF_IP_PRI_CONNTRACK_CONFIRM = INT_MAX, 72607ca46eSDavid Howells NF_IP_PRI_LAST = INT_MAX, 73607ca46eSDavid Howells }; 74607ca46eSDavid Howells 75607ca46eSDavid Howells /* Arguments for setsockopt SOL_IP: */ 76607ca46eSDavid Howells /* 2.0 firewalling went from 64 through 71 (and +256, +512, etc). */ 77607ca46eSDavid Howells /* 2.2 firewalling (+ masq) went from 64 through 76 */ 78607ca46eSDavid Howells /* 2.4 firewalling went 64 through 67. */ 79607ca46eSDavid Howells #define SO_ORIGINAL_DST 80 80607ca46eSDavid Howells 81607ca46eSDavid Howells 82607ca46eSDavid Howells #endif /* _UAPI__LINUX_IP_NETFILTER_H */ 83