Implement AoIP, port to M3UA SIGTRAN (large addition and refactoring)

This was originally a long series of commits converging to the final result
seen in this patch. It does not make much sense to review the smaller steps'
trial and error, we need to review this entire change as a whole.

Implement AoIP in osmo-msc and osmo-bsc.

Change over to the new libosmo-sigtran API with support for proper
SCCP/M3UA/SCTP stacking, as mandated by 3GPP specifications for the IuCS and
IuPS interfaces.

From here on, a separate osmo-stp process is required for SCCP routing between
OsmoBSC / OsmoHNBGW <-> OsmoMSC / OsmoSGSN

jenkins.sh: build from libosmo-sccp and osmo-iuh master branches now for new
M3UA SIGTRAN.

Patch-by: pmaier, nhofmeyr, laforge
Change-Id: I5ae4e05ee7c57cad341ea5e86af37c1f6b0ffa77

1 files changed, 51 insertions, 0 deletions

diff --git a/src/libmgcp/mgcpgw_client_vty.c b/src/libmgcp/mgcpgw_client_vty.c
index a42ee4e5d..806800078 100644
--- a/src/libmgcp/mgcpgw_client_vty.c
+++ b/src/libmgcp/mgcpgw_client_vty.c
@@ -79,10 +79,46 @@ DEFUN(cfg_mgcpgw_remote_port, cfg_mgcpgw_remote_port_cmd,
 	return CMD_SUCCESS;
 }
 
+DEFUN(cfg_mgcpgw_endpoint_range, cfg_mgcpgw_endpoint_range_cmd,
+      "mgcpgw endpoint-range <1-65534> <1-65534>",
+      MGCPGW_STR "usable range of endpoint identifiers\n"
+      "set first useable endpoint identifier\n"
+      "set the last useable endpoint identifier\n")
+{
+	uint16_t first_endpoint = atoi(argv[0]);
+	uint16_t last_endpoint = atoi(argv[1]);
+
+	if (last_endpoint < first_endpoint) {
+		vty_out(vty, "last endpoint must be greater than first endpoint!%s",
+			VTY_NEWLINE);
+		return CMD_SUCCESS;
+	}
+
+	global_mgcpgw_client_conf->first_endpoint = first_endpoint;
+	global_mgcpgw_client_conf->last_endpoint = last_endpoint;
+	return CMD_SUCCESS;
+}
+
+#define BTS_START_STR "First UDP port allocated for the BTS side\n"
+#define UDP_PORT_STR "UDP Port number\n"
+DEFUN(cfg_mgcp_rtp_bts_base_port,
+      cfg_mgcp_rtp_bts_base_port_cmd,
+      "mgcpgw bts-base <0-65534>",
+      MGCPGW_STR
+      BTS_START_STR
+      UDP_PORT_STR)
+{
+	global_mgcpgw_client_conf->bts_base = atoi(argv[0]);
+	return CMD_SUCCESS;
+}
+
 int mgcpgw_client_config_write(struct vty *vty, const char *indent)
 {
 	const char *addr;
 	int port;
+	uint16_t first_endpoint;
+	uint16_t last_endpoint;
+	uint16_t bts_base;
 
 	addr = global_mgcpgw_client_conf->local_addr;
 	if (addr)
@@ -102,6 +138,19 @@ int mgcpgw_client_config_write(struct vty *vty, const char *indent)
 		vty_out(vty, "%smgcpgw remote-port %u%s", indent,
 			(uint16_t)port, VTY_NEWLINE);
 
+	first_endpoint = global_mgcpgw_client_conf->first_endpoint;
+	last_endpoint = global_mgcpgw_client_conf->last_endpoint;
+	if (last_endpoint != 0) {
+		vty_out(vty, "%smgcpgw endpoint-range %u %u%s", indent,
+			first_endpoint, last_endpoint, VTY_NEWLINE);
+	}
+
+	bts_base = global_mgcpgw_client_conf->bts_base;
+	if (bts_base) {
+		vty_out(vty, "%smgcpgw bts-base %u%s", indent,
+			bts_base, VTY_NEWLINE);
+	}
+
 	return CMD_SUCCESS;
 }
 
@@ -113,4 +162,6 @@ void mgcpgw_client_vty_init(int node, struct mgcpgw_client_conf *conf)
 	install_element(node, &cfg_mgcpgw_local_port_cmd);
 	install_element(node, &cfg_mgcpgw_remote_ip_cmd);
 	install_element(node, &cfg_mgcpgw_remote_port_cmd);
+	install_element(node, &cfg_mgcpgw_endpoint_range_cmd);
+	install_element(node, &cfg_mgcp_rtp_bts_base_port_cmd);
 }