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_IP_NF_NAT_NEEDED 13 #include <linux/netfilter_ipv4/ip_nat.h> 14 15 /* per conntrack: nat application helper private data */ 16 union ip_conntrack_nat_help { 17 /* insert nat helper private data here */ 18 }; 19 20 struct nf_conntrack_ipv4_nat { 21 struct ip_nat_info info; 22 union ip_conntrack_nat_help help; 23 #if defined(CONFIG_IP_NF_TARGET_MASQUERADE) || \ 24 defined(CONFIG_IP_NF_TARGET_MASQUERADE_MODULE) 25 int masq_index; 26 #endif 27 }; 28 #endif /* CONFIG_IP_NF_NAT_NEEDED */ 29 30 struct nf_conntrack_ipv4 { 31 #ifdef CONFIG_IP_NF_NAT_NEEDED 32 struct nf_conntrack_ipv4_nat *nat; 33 #endif 34 }; 35 36 /* Returns new sk_buff, or NULL */ 37 struct sk_buff * 38 nf_ct_ipv4_ct_gather_frags(struct sk_buff *skb); 39 40 /* call to create an explicit dependency on nf_conntrack_l3proto_ipv4. */ 41 extern void need_ip_conntrack(void); 42 43 #endif /*_NF_CONNTRACK_IPV4_H*/ 44