Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef __LINUX_IP_NETFILTER_H |
| 2 | #define __LINUX_IP_NETFILTER_H |
| 3 | |
| 4 | /* IPv4-specific defines for netfilter. |
| 5 | * (C)1998 Rusty Russell -- This code is GPL. |
| 6 | */ |
| 7 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | #include <linux/netfilter.h> |
| 9 | |
Harald Welte | 6869c4d | 2005-08-09 19:24:19 -0700 | [diff] [blame] | 10 | /* only for userspace compatibility */ |
| 11 | #ifndef __KERNEL__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | /* IP Cache bits. */ |
| 13 | /* Src IP address. */ |
| 14 | #define NFC_IP_SRC 0x0001 |
| 15 | /* Dest IP address. */ |
| 16 | #define NFC_IP_DST 0x0002 |
| 17 | /* Input device. */ |
| 18 | #define NFC_IP_IF_IN 0x0004 |
| 19 | /* Output device. */ |
| 20 | #define NFC_IP_IF_OUT 0x0008 |
| 21 | /* TOS. */ |
| 22 | #define NFC_IP_TOS 0x0010 |
| 23 | /* Protocol. */ |
| 24 | #define NFC_IP_PROTO 0x0020 |
| 25 | /* IP options. */ |
| 26 | #define NFC_IP_OPTIONS 0x0040 |
| 27 | /* Frag & flags. */ |
| 28 | #define NFC_IP_FRAG 0x0080 |
| 29 | |
| 30 | /* Per-protocol information: only matters if proto match. */ |
| 31 | /* TCP flags. */ |
| 32 | #define NFC_IP_TCPFLAGS 0x0100 |
| 33 | /* Source port. */ |
| 34 | #define NFC_IP_SRC_PT 0x0200 |
| 35 | /* Dest port. */ |
| 36 | #define NFC_IP_DST_PT 0x0400 |
| 37 | /* Something else about the proto */ |
| 38 | #define NFC_IP_PROTO_UNKNOWN 0x2000 |
| 39 | |
| 40 | /* IP Hooks */ |
| 41 | /* After promisc drops, checksum checks. */ |
| 42 | #define NF_IP_PRE_ROUTING 0 |
| 43 | /* If the packet is destined for this box. */ |
| 44 | #define NF_IP_LOCAL_IN 1 |
| 45 | /* If the packet is destined for another interface. */ |
| 46 | #define NF_IP_FORWARD 2 |
| 47 | /* Packets coming from a local process. */ |
| 48 | #define NF_IP_LOCAL_OUT 3 |
| 49 | /* Packets about to hit the wire. */ |
| 50 | #define NF_IP_POST_ROUTING 4 |
| 51 | #define NF_IP_NUMHOOKS 5 |
Patrick McHardy | 6e23ae2 | 2007-11-19 18:53:30 -0800 | [diff] [blame] | 52 | #endif /* ! __KERNEL__ */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | |
| 54 | enum nf_ip_hook_priorities { |
| 55 | NF_IP_PRI_FIRST = INT_MIN, |
| 56 | NF_IP_PRI_CONNTRACK_DEFRAG = -400, |
| 57 | NF_IP_PRI_RAW = -300, |
| 58 | NF_IP_PRI_SELINUX_FIRST = -225, |
| 59 | NF_IP_PRI_CONNTRACK = -200, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | NF_IP_PRI_MANGLE = -150, |
| 61 | NF_IP_PRI_NAT_DST = -100, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | NF_IP_PRI_FILTER = 0, |
James Morris | 560ee65 | 2008-06-09 15:57:24 -0700 | [diff] [blame] | 63 | NF_IP_PRI_SECURITY = 50, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | NF_IP_PRI_NAT_SRC = 100, |
| 65 | NF_IP_PRI_SELINUX_LAST = 225, |
Patrick McHardy | e281e3a | 2005-04-24 18:41:38 -0700 | [diff] [blame] | 66 | NF_IP_PRI_CONNTRACK_CONFIRM = INT_MAX, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | NF_IP_PRI_LAST = INT_MAX, |
| 68 | }; |
| 69 | |
| 70 | /* Arguments for setsockopt SOL_IP: */ |
| 71 | /* 2.0 firewalling went from 64 through 71 (and +256, +512, etc). */ |
| 72 | /* 2.2 firewalling (+ masq) went from 64 through 76 */ |
| 73 | /* 2.4 firewalling went 64 through 67. */ |
| 74 | #define SO_ORIGINAL_DST 80 |
| 75 | |
| 76 | #ifdef __KERNEL__ |
Herbert Xu | 3db05fe | 2007-10-15 00:53:15 -0700 | [diff] [blame] | 77 | extern int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type); |
| 78 | extern int ip_xfrm_me_harder(struct sk_buff *skb); |
Al Viro | b51655b | 2006-11-14 21:40:42 -0800 | [diff] [blame] | 79 | extern __sum16 nf_ip_checksum(struct sk_buff *skb, unsigned int hook, |
Patrick McHardy | 422c346 | 2006-04-06 14:18:43 -0700 | [diff] [blame] | 80 | unsigned int dataoff, u_int8_t protocol); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | #endif /*__KERNEL__*/ |
| 82 | |
| 83 | #endif /*__LINUX_IP_NETFILTER_H*/ |