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 */ 17union nf_conntrack_nat_help { 18 /* insert nat helper private data here */ 19 struct nf_nat_pptp nat_pptp_info; 20}; 21 22struct 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 */ 33struct sk_buff * 34nf_ct_ipv4_ct_gather_frags(struct sk_buff *skb); 35 36extern struct nf_conntrack_l4proto nf_conntrack_l4proto_tcp4; 37extern struct nf_conntrack_l4proto nf_conntrack_l4proto_udp4; 38extern struct nf_conntrack_l4proto nf_conntrack_l4proto_icmp; 39 40extern int nf_conntrack_ipv4_compat_init(void); 41extern void nf_conntrack_ipv4_compat_fini(void); 42 43#endif /*_NF_CONNTRACK_IPV4_H*/ 44