LXR linux/include/linux/netfilter

   1#ifndef __LINUX_IP6_NETFILTER_H
   2#define __LINUX_IP6_NETFILTER_H
   3
   4/* IPv6-specific defines for netfilter. 
   5 * (C)1998 Rusty Russell -- This code is GPL.
   6 * (C)1999 David Jeffery
   7 *   this header was blatantly ripped from netfilter_ipv4.h 
   8 *   it's amazing what adding a bunch of 6s can do =8^)
   9 */
  10
  11#include <linux/netfilter.h>
  12
  13/* only for userspace compatibility */
  14#ifndef __KERNEL__
  15/* IP Cache bits. */
  16/* Src IP address. */
  17#define NFC_IP6_SRC              0x0001
  18/* Dest IP address. */
  19#define NFC_IP6_DST              0x0002
  20/* Input device. */
  21#define NFC_IP6_IF_IN            0x0004
  22/* Output device. */
  23#define NFC_IP6_IF_OUT           0x0008
  24/* TOS. */
  25#define NFC_IP6_TOS              0x0010
  26/* Protocol. */
  27#define NFC_IP6_PROTO            0x0020
  28/* IP options. */
  29#define NFC_IP6_OPTIONS          0x0040
  30/* Frag & flags. */
  31#define NFC_IP6_FRAG             0x0080
  32
  33
  34/* Per-protocol information: only matters if proto match. */
  35/* TCP flags. */
  36#define NFC_IP6_TCPFLAGS         0x0100
  37/* Source port. */
  38#define NFC_IP6_SRC_PT           0x0200
  39/* Dest port. */
  40#define NFC_IP6_DST_PT           0x0400
  41/* Something else about the proto */
  42#define NFC_IP6_PROTO_UNKNOWN    0x2000
  43#endif /* ! __KERNEL__ */
  44
  45
  46/* IP6 Hooks */
  47/* After promisc drops, checksum checks. */
  48#define NF_IP6_PRE_ROUTING      0
  49/* If the packet is destined for this box. */
  50#define NF_IP6_LOCAL_IN         1
  51/* If the packet is destined for another interface. */
  52#define NF_IP6_FORWARD          2
  53/* Packets coming from a local process. */
  54#define NF_IP6_LOCAL_OUT                3
  55/* Packets about to hit the wire. */
  56#define NF_IP6_POST_ROUTING     4
  57#define NF_IP6_NUMHOOKS         5
  58
  59
  60enum nf_ip6_hook_priorities {
  61        NF_IP6_PRI_FIRST = INT_MIN,
  62        NF_IP6_PRI_CONNTRACK_DEFRAG = -400,
  63        NF_IP6_PRI_SELINUX_FIRST = -225,
  64        NF_IP6_PRI_CONNTRACK = -200,
  65        NF_IP6_PRI_BRIDGE_SABOTAGE_FORWARD = -175,
  66        NF_IP6_PRI_MANGLE = -150,
  67        NF_IP6_PRI_NAT_DST = -100,
  68        NF_IP6_PRI_BRIDGE_SABOTAGE_LOCAL_OUT = -50,
  69        NF_IP6_PRI_FILTER = 0,
  70        NF_IP6_PRI_NAT_SRC = 100,
  71        NF_IP6_PRI_SELINUX_LAST = 225,
  72        NF_IP6_PRI_LAST = INT_MAX,
  73};
  74
  75#ifdef CONFIG_NETFILTER
  76extern unsigned int nf_ip6_checksum(struct sk_buff *skb, unsigned int hook,
  77                                    unsigned int dataoff, u_int8_t protocol);
  78
  79extern int ipv6_netfilter_init(void);
  80extern void ipv6_netfilter_fini(void);
  81#else /* CONFIG_NETFILTER */
  82static inline int ipv6_netfilter_init(void) { return 0; }
  83static inline void ipv6_netfilter_fini(void) { return; }
  84#endif /* CONFIG_NETFILTER */
  85
  86#endif /*__LINUX_IP6_NETFILTER_H*/
  87