src/gsup_router.h

struct osmo_gsup_conn *gsup_route_find(struct osmo_gsup_server *gs,
					const uint8_t *addr, size_t addrlen);

/* add a new route for the given address to the given conn */
int gsup_route_add(struct osmo_gsup_conn *conn, const uint8_t *addr, size_t addrlen);

/* delete all routes for the given connection */
int gsup_route_del_conn(struct osmo_gsup_conn *conn);

int osmo_gsup_addr_send(struct osmo_gsup_server *gs,
			const uint8_t *addr, size_t addrlen,
			struct msgb *msg);