| #ifndef __LINUX_IP_NETFILTER_H |
| #define __LINUX_IP_NETFILTER_H |
| |
| /* IPv4-specific defines for netfilter. |
| * (C)1998 Rusty Russell -- This code is GPL. |
| */ |
| |
| #include <linux/netfilter.h> |
| |
| /* only for userspace compatibility */ |
| #ifndef __KERNEL__ |
| /* IP Cache bits. */ |
| /* Src IP address. */ |
| #define NFC_IP_SRC 0x0001 |
| /* Dest IP address. */ |
| #define NFC_IP_DST 0x0002 |
| /* Input device. */ |
| #define NFC_IP_IF_IN 0x0004 |
| /* Output device. */ |
| #define NFC_IP_IF_OUT 0x0008 |
| /* TOS. */ |
| #define NFC_IP_TOS 0x0010 |
| /* Protocol. */ |
| #define NFC_IP_PROTO 0x0020 |
| /* IP options. */ |
| #define NFC_IP_OPTIONS 0x0040 |
| /* Frag & flags. */ |
| #define NFC_IP_FRAG 0x0080 |
| |
| /* Per-protocol information: only matters if proto match. */ |
| /* TCP flags. */ |
| #define NFC_IP_TCPFLAGS 0x0100 |
| /* Source port. */ |
| #define NFC_IP_SRC_PT 0x0200 |
| /* Dest port. */ |
| #define NFC_IP_DST_PT 0x0400 |
| /* Something else about the proto */ |
| #define NFC_IP_PROTO_UNKNOWN 0x2000 |
| |
| /* IP Hooks */ |
| /* After promisc drops, checksum checks. */ |
| #define NF_IP_PRE_ROUTING 0 |
| /* If the packet is destined for this box. */ |
| #define NF_IP_LOCAL_IN 1 |
| /* If the packet is destined for another interface. */ |
| #define NF_IP_FORWARD 2 |
| /* Packets coming from a local process. */ |
| #define NF_IP_LOCAL_OUT 3 |
| /* Packets about to hit the wire. */ |
| #define NF_IP_POST_ROUTING 4 |
| #define NF_IP_NUMHOOKS 5 |
| #endif /* ! __KERNEL__ */ |
| |
| enum nf_ip_hook_priorities { |
| NF_IP_PRI_FIRST = INT_MIN, |
| NF_IP_PRI_CONNTRACK_DEFRAG = -400, |
| NF_IP_PRI_RAW = -300, |
| NF_IP_PRI_SELINUX_FIRST = -225, |
| NF_IP_PRI_CONNTRACK = -200, |
| NF_IP_PRI_MANGLE = -150, |
| NF_IP_PRI_NAT_DST = -100, |
| NF_IP_PRI_FILTER = 0, |
| NF_IP_PRI_SECURITY = 50, |
| NF_IP_PRI_NAT_SRC = 100, |
| NF_IP_PRI_SELINUX_LAST = 225, |
| NF_IP_PRI_CONNTRACK_CONFIRM = INT_MAX, |
| NF_IP_PRI_LAST = INT_MAX, |
| }; |
| |
| /* Arguments for setsockopt SOL_IP: */ |
| /* 2.0 firewalling went from 64 through 71 (and +256, +512, etc). */ |
| /* 2.2 firewalling (+ masq) went from 64 through 76 */ |
| /* 2.4 firewalling went 64 through 67. */ |
| #define SO_ORIGINAL_DST 80 |
| |
| #ifdef __KERNEL__ |
| extern int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type); |
| extern int ip_xfrm_me_harder(struct sk_buff *skb); |
| extern __sum16 nf_ip_checksum(struct sk_buff *skb, unsigned int hook, |
| unsigned int dataoff, u_int8_t protocol); |
| #endif /*__KERNEL__*/ |
| |
| #endif /*__LINUX_IP_NETFILTER_H*/ |
