patch-2.3.99-pre2 linux/include/linux/netfilter_ipv4/ip_nat_protocol.h
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- Lines: 58
- Date:
Fri Mar 17 10:56:20 2000
- Orig file:
v2.3.99-pre1/linux/include/linux/netfilter_ipv4/ip_nat_protocol.h
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.3.99-pre1/linux/include/linux/netfilter_ipv4/ip_nat_protocol.h linux/include/linux/netfilter_ipv4/ip_nat_protocol.h
@@ -0,0 +1,57 @@
+/* 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*/
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