netfilter_ipv4.h
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上传日期:2009-04-28
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- #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/config.h>
- #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
- #endif /* ! __KERNEL__ */
- /* 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
- 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_BRIDGE_SABOTAGE_FORWARD = -175,
- NF_IP_PRI_MANGLE = -150,
- NF_IP_PRI_NAT_DST = -100,
- NF_IP_PRI_BRIDGE_SABOTAGE_LOCAL_OUT = -50,
- NF_IP_PRI_FILTER = 0,
- NF_IP_PRI_NAT_SRC = 100,
- NF_IP_PRI_SELINUX_LAST = 225,
- NF_IP_PRI_CONNTRACK_HELPER = INT_MAX - 2,
- NF_IP_PRI_NAT_SEQ_ADJUST = INT_MAX - 1,
- 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 **pskb);
- #endif /*__KERNEL__*/
- #endif /*__LINUX_IP_NETFILTER_H*/