1*607ca46eSDavid Howells /* IPv4-specific defines for netfilter. 2*607ca46eSDavid Howells * (C)1998 Rusty Russell -- This code is GPL. 3*607ca46eSDavid Howells */ 4*607ca46eSDavid Howells #ifndef _UAPI__LINUX_IP_NETFILTER_H 5*607ca46eSDavid Howells #define _UAPI__LINUX_IP_NETFILTER_H 6*607ca46eSDavid Howells 7*607ca46eSDavid Howells 8*607ca46eSDavid Howells #include <linux/netfilter.h> 9*607ca46eSDavid Howells 10*607ca46eSDavid Howells /* only for userspace compatibility */ 11*607ca46eSDavid Howells #ifndef __KERNEL__ 12*607ca46eSDavid Howells 13*607ca46eSDavid Howells #include <limits.h> /* for INT_MIN, INT_MAX */ 14*607ca46eSDavid Howells 15*607ca46eSDavid Howells /* IP Cache bits. */ 16*607ca46eSDavid Howells /* Src IP address. */ 17*607ca46eSDavid Howells #define NFC_IP_SRC 0x0001 18*607ca46eSDavid Howells /* Dest IP address. */ 19*607ca46eSDavid Howells #define NFC_IP_DST 0x0002 20*607ca46eSDavid Howells /* Input device. */ 21*607ca46eSDavid Howells #define NFC_IP_IF_IN 0x0004 22*607ca46eSDavid Howells /* Output device. */ 23*607ca46eSDavid Howells #define NFC_IP_IF_OUT 0x0008 24*607ca46eSDavid Howells /* TOS. */ 25*607ca46eSDavid Howells #define NFC_IP_TOS 0x0010 26*607ca46eSDavid Howells /* Protocol. */ 27*607ca46eSDavid Howells #define NFC_IP_PROTO 0x0020 28*607ca46eSDavid Howells /* IP options. */ 29*607ca46eSDavid Howells #define NFC_IP_OPTIONS 0x0040 30*607ca46eSDavid Howells /* Frag & flags. */ 31*607ca46eSDavid Howells #define NFC_IP_FRAG 0x0080 32*607ca46eSDavid Howells 33*607ca46eSDavid Howells /* Per-protocol information: only matters if proto match. */ 34*607ca46eSDavid Howells /* TCP flags. */ 35*607ca46eSDavid Howells #define NFC_IP_TCPFLAGS 0x0100 36*607ca46eSDavid Howells /* Source port. */ 37*607ca46eSDavid Howells #define NFC_IP_SRC_PT 0x0200 38*607ca46eSDavid Howells /* Dest port. */ 39*607ca46eSDavid Howells #define NFC_IP_DST_PT 0x0400 40*607ca46eSDavid Howells /* Something else about the proto */ 41*607ca46eSDavid Howells #define NFC_IP_PROTO_UNKNOWN 0x2000 42*607ca46eSDavid Howells 43*607ca46eSDavid Howells /* IP Hooks */ 44*607ca46eSDavid Howells /* After promisc drops, checksum checks. */ 45*607ca46eSDavid Howells #define NF_IP_PRE_ROUTING 0 46*607ca46eSDavid Howells /* If the packet is destined for this box. */ 47*607ca46eSDavid Howells #define NF_IP_LOCAL_IN 1 48*607ca46eSDavid Howells /* If the packet is destined for another interface. */ 49*607ca46eSDavid Howells #define NF_IP_FORWARD 2 50*607ca46eSDavid Howells /* Packets coming from a local process. */ 51*607ca46eSDavid Howells #define NF_IP_LOCAL_OUT 3 52*607ca46eSDavid Howells /* Packets about to hit the wire. */ 53*607ca46eSDavid Howells #define NF_IP_POST_ROUTING 4 54*607ca46eSDavid Howells #define NF_IP_NUMHOOKS 5 55*607ca46eSDavid Howells #endif /* ! __KERNEL__ */ 56*607ca46eSDavid Howells 57*607ca46eSDavid Howells enum nf_ip_hook_priorities { 58*607ca46eSDavid Howells NF_IP_PRI_FIRST = INT_MIN, 59*607ca46eSDavid Howells NF_IP_PRI_CONNTRACK_DEFRAG = -400, 60*607ca46eSDavid Howells NF_IP_PRI_RAW = -300, 61*607ca46eSDavid Howells NF_IP_PRI_SELINUX_FIRST = -225, 62*607ca46eSDavid Howells NF_IP_PRI_CONNTRACK = -200, 63*607ca46eSDavid Howells NF_IP_PRI_MANGLE = -150, 64*607ca46eSDavid Howells NF_IP_PRI_NAT_DST = -100, 65*607ca46eSDavid Howells NF_IP_PRI_FILTER = 0, 66*607ca46eSDavid Howells NF_IP_PRI_SECURITY = 50, 67*607ca46eSDavid Howells NF_IP_PRI_NAT_SRC = 100, 68*607ca46eSDavid Howells NF_IP_PRI_SELINUX_LAST = 225, 69*607ca46eSDavid Howells NF_IP_PRI_CONNTRACK_HELPER = 300, 70*607ca46eSDavid Howells NF_IP_PRI_CONNTRACK_CONFIRM = INT_MAX, 71*607ca46eSDavid Howells NF_IP_PRI_LAST = INT_MAX, 72*607ca46eSDavid Howells }; 73*607ca46eSDavid Howells 74*607ca46eSDavid Howells /* Arguments for setsockopt SOL_IP: */ 75*607ca46eSDavid Howells /* 2.0 firewalling went from 64 through 71 (and +256, +512, etc). */ 76*607ca46eSDavid Howells /* 2.2 firewalling (+ masq) went from 64 through 76 */ 77*607ca46eSDavid Howells /* 2.4 firewalling went 64 through 67. */ 78*607ca46eSDavid Howells #define SO_ORIGINAL_DST 80 79*607ca46eSDavid Howells 80*607ca46eSDavid Howells 81*607ca46eSDavid Howells #endif /* _UAPI__LINUX_IP_NETFILTER_H */ 82