release/src-rt-6.x/linux/linux-2.6/include/net/netfilter/ipv4/nf_conntrack_ipv4.h

   1 /*
   2  * IPv4 support for nf_conntrack.
   3  *
   4  * 23 Mar 2004: Yasuyuki Kozakai @ USAGI <yasuyuki.kozakai@toshiba.co.jp>
   5  *      - move L3 protocol dependent part from include/linux/netfilter_ipv4/
   6  *        ip_conntarck.h
   7  */
   8
   9 #ifndef _NF_CONNTRACK_IPV4_H
  10 #define _NF_CONNTRACK_IPV4_H
  11
  12 #ifdef CONFIG_NF_NAT_NEEDED
  13 #include <net/netfilter/nf_nat.h>
  14 #include <linux/netfilter/nf_conntrack_pptp.h>
  15
  16 /* per conntrack: nat application helper private data */
  17 union nf_conntrack_nat_help {
  18         /* insert nat helper private data here */
  19         struct nf_nat_pptp nat_pptp_info;
  20 };
  21
  22 struct nf_conn_nat {
  23         struct nf_nat_info info;
  24         union nf_conntrack_nat_help help;
  25 #if defined(CONFIG_IP_NF_TARGET_MASQUERADE) || \
  26         defined(CONFIG_IP_NF_TARGET_MASQUERADE_MODULE)
  27         int masq_index;
  28 #endif
  29 };
  30 #endif /* CONFIG_NF_NAT_NEEDED */
  31
  32 /* Returns new sk_buff, or NULL */
  33 struct sk_buff *
  34 nf_ct_ipv4_ct_gather_frags(struct sk_buff *skb);
  35
  36 extern struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp4;
  37 extern struct nf_conntrack_l4proto nf_conntrack_l4proto_udp4;
  38 extern struct nf_conntrack_l4proto nf_conntrack_l4proto_icmp;
  39
  40 extern int nf_conntrack_ipv4_compat_init(void);
  41 extern void nf_conntrack_ipv4_compat_fini(void);
  42
  43 #endif /*_NF_CONNTRACK_IPV4_H*/