ip_nat_protocol.h
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:2k
- /* Header for use in defining a given protocol. */
- #ifndef _IP_NAT_PROTOCOL_H
- #define _IP_NAT_PROTOCOL_H
- #include <linux/init.h>
- #include <linux/list.h>
- struct iphdr;
- struct ip_nat_range;
- struct ip_nat_protocol
- {
- struct list_head list;
- /* Protocol name */
- const char *name;
- /* Protocol number. */
- unsigned int protonum;
- /* Do a packet translation according to the ip_nat_proto_manip
- * and manip type. */
- void (*manip_pkt)(struct iphdr *iph, size_t len,
- const struct ip_conntrack_manip *manip,
- enum ip_nat_manip_type maniptype);
- /* Is the manipable part of the tuple between min and max incl? */
- int (*in_range)(const struct ip_conntrack_tuple *tuple,
- enum ip_nat_manip_type maniptype,
- const union ip_conntrack_manip_proto *min,
- const union ip_conntrack_manip_proto *max);
- /* Alter the per-proto part of the tuple (depending on
- maniptype), to give a unique tuple in the given range if
- possible; return false if not. Per-protocol part of tuple
- is initialized to the incoming packet. */
- int (*unique_tuple)(struct ip_conntrack_tuple *tuple,
- const struct ip_nat_range *range,
- enum ip_nat_manip_type maniptype,
- const struct ip_conntrack *conntrack);
- unsigned int (*print)(char *buffer,
- const struct ip_conntrack_tuple *match,
- const struct ip_conntrack_tuple *mask);
- unsigned int (*print_range)(char *buffer,
- const struct ip_nat_range *range);
- };
- /* Protocol registration. */
- extern int ip_nat_protocol_register(struct ip_nat_protocol *proto);
- extern void ip_nat_protocol_unregister(struct ip_nat_protocol *proto);
- extern int init_protocols(void) __init;
- extern void cleanup_protocols(void);
- extern struct ip_nat_protocol *find_nat_proto(u_int16_t protonum);
- #endif /*_IP_NAT_PROTO_H*/