struct nf_nat_protocol
{
- /* Protocol name */
- const char *name;
-
/* Protocol number. */
unsigned int protonum;
/* Translate a packet to the target according to manip type.
Return true if succeeded. */
- int (*manip_pkt)(struct sk_buff **pskb,
- unsigned int iphdroff,
- const struct nf_conntrack_tuple *tuple,
- enum nf_nat_manip_type maniptype);
+ bool (*manip_pkt)(struct sk_buff *skb,
+ unsigned int iphdroff,
+ const struct nf_conntrack_tuple *tuple,
+ enum nf_nat_manip_type maniptype);
/* Is the manipable part of the tuple between min and max incl? */
- int (*in_range)(const struct nf_conntrack_tuple *tuple,
- enum nf_nat_manip_type maniptype,
- const union nf_conntrack_man_proto *min,
- const union nf_conntrack_man_proto *max);
+ bool (*in_range)(const struct nf_conntrack_tuple *tuple,
+ enum nf_nat_manip_type maniptype,
+ const union nf_conntrack_man_proto *min,
+ const union nf_conntrack_man_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 nf_conntrack_tuple *tuple,
- const struct nf_nat_range *range,
- enum nf_nat_manip_type maniptype,
- const struct nf_conn *ct);
+ bool (*unique_tuple)(struct nf_conntrack_tuple *tuple,
+ const struct nf_nat_range *range,
+ enum nf_nat_manip_type maniptype,
+ const struct nf_conn *ct);
int (*range_to_nlattr)(struct sk_buff *skb,
const struct nf_nat_range *range);
};
/* Protocol registration. */
-extern int nf_nat_protocol_register(struct nf_nat_protocol *proto);
-extern void nf_nat_protocol_unregister(struct nf_nat_protocol *proto);
+extern int nf_nat_protocol_register(const struct nf_nat_protocol *proto);
+extern void nf_nat_protocol_unregister(const struct nf_nat_protocol *proto);
-extern struct nf_nat_protocol *nf_nat_proto_find_get(u_int8_t protocol);
-extern void nf_nat_proto_put(struct nf_nat_protocol *proto);
+extern const struct nf_nat_protocol *nf_nat_proto_find_get(u_int8_t protocol);
+extern void nf_nat_proto_put(const struct nf_nat_protocol *proto);
/* Built-in protocols. */
-extern struct nf_nat_protocol nf_nat_protocol_tcp;
-extern struct nf_nat_protocol nf_nat_protocol_udp;
-extern struct nf_nat_protocol nf_nat_protocol_icmp;
-extern struct nf_nat_protocol nf_nat_unknown_protocol;
+extern const struct nf_nat_protocol nf_nat_protocol_tcp;
+extern const struct nf_nat_protocol nf_nat_protocol_udp;
+extern const struct nf_nat_protocol nf_nat_protocol_icmp;
+extern const struct nf_nat_protocol nf_nat_unknown_protocol;
extern int init_protocols(void) __init;
extern void cleanup_protocols(void);
-extern struct nf_nat_protocol *find_nat_proto(u_int16_t protonum);
+extern const struct nf_nat_protocol *find_nat_proto(u_int16_t protonum);
+
+extern bool nf_nat_proto_in_range(const struct nf_conntrack_tuple *tuple,
+ enum nf_nat_manip_type maniptype,
+ const union nf_conntrack_man_proto *min,
+ const union nf_conntrack_man_proto *max);
+
+extern bool nf_nat_proto_unique_tuple(struct nf_conntrack_tuple *tuple,
+ const struct nf_nat_range *range,
+ enum nf_nat_manip_type maniptype,
+ const struct nf_conn *ct,
+ u_int16_t *rover);
-extern int nf_nat_port_range_to_nlattr(struct sk_buff *skb,
- const struct nf_nat_range *range);
-extern int nf_nat_port_nlattr_to_range(struct nlattr *tb[],
- struct nf_nat_range *range);
+extern int nf_nat_proto_range_to_nlattr(struct sk_buff *skb,
+ const struct nf_nat_range *range);
+extern int nf_nat_proto_nlattr_to_range(struct nlattr *tb[],
+ struct nf_nat_range *range);
#endif /*_NF_NAT_PROTO_H*/