class ctrlfd_t;
class l2tp_peer_t;
class l2tp_tunnel_t;

class multihop_t {
private:
#define MAX_MULTIHOP_DOMAINS	256
	int			nr_multihop;
	const char		*multihop_lhs[MAX_MULTIHOP_DOMAINS];
	const char		*multihop_domains[MAX_MULTIHOP_DOMAINS];
	const char		*multihop_tunnel_group[MAX_MULTIHOP_DOMAINS];
	l2tp_peer_t		*multihop_peers[MAX_MULTIHOP_DOMAINS];

	l2tp_tunnel_t *try_multihop(const char *full_id, const char *domain);


public:
	multihop_t();

	void show_running_config(ctrlfd_t *cfd, int verbose, const char *scope);
	l2tp_peer_t *lookup_multihop_peer(const char *tunnel_group, const char *full_id, const char *domain, int insert);
	l2tp_tunnel_t *try_multihop(const char *user);
	l2tp_tunnel_t *try_multihop_tunnel_group(const char *tunnel_group, unsigned len);

	void del_multihop_index(int index);
	int find_multihop_index(const char *tunnel_group, char *domain, l2tp_peer_t *peer, char *lhs);
	void del_multihop(ctrlfd_t *cfd, const char *tunnel_group, char *domain, l2tp_peer_t *peer, char *lhs);
	void add_multihop(ctrlfd_t *cfd, const char *tunnel_group, char *domain, l2tp_peer_t *peer, char *lhs, union sockaddr_union *sau, int insert);
	void dump_multihop(ctrlfd_t *cfd);

	void dump_full_state(ctrlfd_t *cfd, int do_config);
};