[mgcp] Prepare to do MGCP over TCP and inside the bsc_msc_ip process

* Separate main process and protocol handling into two parts.
* Change the protocol handling to work with UDP and TCP connection
* This will allow to speak MGCP over TCP between the BSC MUX and
  the real BSC.

openbsc/include/openbsc/mgcp.h

@@ -21,7 +21,8 @@
  *
  */
 
-unsigned int rtp_base_port = 4000;
+#define RTP_PORT_DEFAULT 4000
+extern unsigned int rtp_base_port;
 
 /**
  * Calculate the RTP audio port for the given multiplex
@@ -42,7 +43,12 @@ unsigned int rtp_base_port = 4000;
  * network and BTS.
  *
  */
-int rtp_calculate_port(int multiplex, int base)
+static inline int rtp_calculate_port(int multiplex, int base)
 {
 	return base + (multiplex * 2);
 }
+
+int mgcp_parse_config(const char *config_file, struct gsm_network *dummy_network);
+int mgcp_handle_message(int fd, struct msgb *msg, struct sockaddr_in *source);
+int mgcp_send_rsip(int fd, struct sockaddr_in *source);
+int mgcp_vty_init(void);

openbsc/src/Makefile.am

@@ -38,7 +38,7 @@ ipaccess_config_LDADD = libbsc.a libmsc.a libbsc.a libvty.a -ldl -ldbi $(LIBCRYP
 
 isdnsync_SOURCES = isdnsync.c
 
-bsc_mgcp_SOURCES = mgcp/mgcp_main.c msgb.c talloc.c debug.c select.c timer.c telnet_interface.c
+bsc_mgcp_SOURCES = mgcp/mgcp_main.c mgcp/mgcp_protocol.c msgb.c talloc.c debug.c select.c timer.c telnet_interface.c
 bsc_mgcp_LDADD = libvty.a
 
 ipaccess_proxy_SOURCES = ipaccess/ipaccess-proxy.c msgb.c select.c talloc.c debug.c timer.c