mgcp: Introduce a mgcp_trunk_config enum for endpoint configs

We want to support real trunks in the MGCP code and we need to
have some better book keeping for those. Move the code around.
diff --git a/openbsc/src/mgcp/mgcp_vty.c b/openbsc/src/mgcp/mgcp_vty.c
index b6301d8..bf8b7d4 100644
--- a/openbsc/src/mgcp/mgcp_vty.c
+++ b/openbsc/src/mgcp/mgcp_vty.c
@@ -2,8 +2,8 @@
 /* The protocol implementation */
 
 /*
- * (C) 2009-2010 by Holger Hans Peter Freyther <zecke@selfish.org>
- * (C) 2009-2010 by On-Waves
+ * (C) 2009-2011 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2009-2011 by On-Waves
  * All Rights Reserved
  *
  * This program is free software; you can redistribute it and/or modify
@@ -69,12 +69,14 @@
 			g_cfg->net_ports.range_start, g_cfg->net_ports.range_end, VTY_NEWLINE);
 
 	vty_out(vty, "  rtp ip-dscp %d%s", g_cfg->endp_dscp, VTY_NEWLINE);
-	if (g_cfg->audio_payload != -1)
-		vty_out(vty, "  sdp audio payload number %d%s", g_cfg->audio_payload, VTY_NEWLINE);
-	if (g_cfg->audio_name)
-		vty_out(vty, "  sdp audio payload name %s%s", g_cfg->audio_name, VTY_NEWLINE);
-	vty_out(vty, "  loop %u%s", !!g_cfg->audio_loop, VTY_NEWLINE);
-	vty_out(vty, "  number endpoints %u%s", g_cfg->number_endpoints - 1, VTY_NEWLINE);
+	if (g_cfg->trunk.audio_payload != -1)
+		vty_out(vty, "  sdp audio payload number %d%s",
+			g_cfg->trunk.audio_payload, VTY_NEWLINE);
+	if (g_cfg->trunk.audio_name)
+		vty_out(vty, "  sdp audio payload name %s%s",
+			g_cfg->trunk.audio_name, VTY_NEWLINE);
+	vty_out(vty, "  loop %u%s", !!g_cfg->trunk.audio_loop, VTY_NEWLINE);
+	vty_out(vty, "  number endpoints %u%s", g_cfg->trunk.number_endpoints - 1, VTY_NEWLINE);
 	if (g_cfg->call_agent_addr)
 		vty_out(vty, "  call agent ip %s%s", g_cfg->call_agent_addr, VTY_NEWLINE);
 	if (g_cfg->transcoder_ip)
@@ -95,9 +97,10 @@
 {
 	int i;
 
-	vty_out(vty, "MGCP is up and running with %u endpoints:%s", g_cfg->number_endpoints - 1, VTY_NEWLINE);
-	for (i = 1; i < g_cfg->number_endpoints; ++i) {
-		struct mgcp_endpoint *endp = &g_cfg->endpoints[i];
+	vty_out(vty, "MGCP is up and running with %u endpoints:%s",
+		g_cfg->trunk.number_endpoints - 1, VTY_NEWLINE);
+	for (i = 1; i < g_cfg->trunk.number_endpoints; ++i) {
+		struct mgcp_endpoint *endp = &g_cfg->trunk.endpoints[i];
 		vty_out(vty, " Endpoint 0x%.2x: CI: %d net: %u/%u bts: %u/%u on %s traffic received bts: %u/%u  remote: %u/%u transcoder: %u/%u%s",
 			i, endp->ci,
 			ntohs(endp->net_end.rtp_port), ntohs(endp->net_end.rtcp_port),
@@ -265,7 +268,7 @@
       "Set the audio codec to use")
 {
 	unsigned int payload = atoi(argv[0]);
-	g_cfg->audio_payload = payload;
+	g_cfg->trunk.audio_payload = payload;
 	return CMD_SUCCESS;
 }
 
@@ -274,7 +277,7 @@
       "sdp audio payload name NAME",
       "Set the audio name to use")
 {
-	bsc_replace_string(g_cfg, &g_cfg->audio_name, argv[0]);
+	bsc_replace_string(g_cfg, &g_cfg->trunk.audio_name, argv[0]);
 	return CMD_SUCCESS;
 }
 
@@ -283,7 +286,7 @@
       "loop (0|1)",
       "Loop the audio")
 {
-	g_cfg->audio_loop = atoi(argv[0]);
+	g_cfg->trunk.audio_loop = atoi(argv[0]);
 	return CMD_SUCCESS;
 }
 
@@ -293,7 +296,7 @@
       "The number of endpoints to allocate. This is not dynamic.")
 {
 	/* + 1 as we start counting at one */
-	g_cfg->number_endpoints = atoi(argv[0]) + 1;
+	g_cfg->trunk.number_endpoints = atoi(argv[0]) + 1;
 	return CMD_SUCCESS;
 }
 
@@ -351,14 +354,14 @@
 	struct mgcp_endpoint *endp;
 
 	int endp_no = strtoul(argv[0], NULL, 16);
-	if (endp_no < 1 || endp_no >= g_cfg->number_endpoints) {
+	if (endp_no < 1 || endp_no >= g_cfg->trunk.number_endpoints) {
 		vty_out(vty, "Loopback number %s/%d is invalid.%s",
 		argv[0], endp_no, VTY_NEWLINE);
 		return CMD_WARNING;
 	}
 
 
-	endp = &g_cfg->endpoints[endp_no];
+	endp = &g_cfg->trunk.endpoints[endp_no];
 	int loop = atoi(argv[1]);
 
 	if (loop)
@@ -386,13 +389,13 @@
 	int port = 0;
 
 	int endp_no = strtoul(argv[0], NULL, 16);
-	if (endp_no < 1 || endp_no >= g_cfg->number_endpoints) {
+	if (endp_no < 1 || endp_no >= g_cfg->trunk.number_endpoints) {
 		vty_out(vty, "Endpoint number %s/%d is invalid.%s",
 		argv[0], endp_no, VTY_NEWLINE);
 		return CMD_WARNING;
 	}
 
-	endp = &g_cfg->endpoints[endp_no];
+	endp = &g_cfg->trunk.endpoints[endp_no];
 
 	if (strcmp(argv[1], "bts-in") == 0) {
 		port = MGCP_TAP_BTS_IN;
@@ -422,13 +425,13 @@
 	struct mgcp_endpoint *endp;
 
 	int endp_no = strtoul(argv[0], NULL, 16);
-	if (endp_no < 1 || endp_no >= g_cfg->number_endpoints) {
+	if (endp_no < 1 || endp_no >= g_cfg->trunk.number_endpoints) {
 		vty_out(vty, "Endpoint number %s/%d is invalid.%s",
 		argv[0], endp_no, VTY_NEWLINE);
 		return CMD_WARNING;
 	}
 
-	endp = &g_cfg->endpoints[endp_no];
+	endp = &g_cfg->trunk.endpoints[endp_no];
 	mgcp_free_endp(endp);
 	return CMD_SUCCESS;
 }
@@ -492,13 +495,14 @@
 	}
 
 	if (mgcp_endpoints_allocate(g_cfg) != 0) {
-		fprintf(stderr, "Failed to allocate endpoints: %d. Quitting.\n", g_cfg->number_endpoints);
+		fprintf(stderr, "Failed to allocate endpoints: %d. Quitting.\n",
+		g_cfg->trunk.number_endpoints);
 		return -1;
 	}
 
 	/* early bind */
-	for (i = 1; i < g_cfg->number_endpoints; ++i) {
-		struct mgcp_endpoint *endp = &g_cfg->endpoints[i];
+	for (i = 1; i < g_cfg->trunk.number_endpoints; ++i) {
+		struct mgcp_endpoint *endp = &g_cfg->trunk.endpoints[i];
 		int rtp_port;
 
 		if (g_cfg->bts_ports.mode == PORT_ALLOC_STATIC) {