From 7b07b2dcff72aa302b093beb3942c592b5103b91 Mon Sep 17 00:00:00 2001
From: Holger Hans Peter Freyther <zecke@selfish.org>
Date: Fri, 25 Feb 2011 20:38:15 +0100
Subject: [PATCH] nat: Start making the number of multiplexes configurable

Introduce a VTY setting that right now needs to be set to
one. To make updating this setting possible we will now store
the number of endpoints in the bsc connection as well.
---
 openbsc/include/openbsc/bsc_nat.h |  1 +
 openbsc/src/nat/bsc_mgcp_utils.c  |  3 ++-
 openbsc/src/nat/bsc_nat_vty.c     | 14 +++++++++++++-
 3 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/openbsc/include/openbsc/bsc_nat.h b/openbsc/include/openbsc/bsc_nat.h
index 13d1b09f2..49213a5ed 100644
--- a/openbsc/include/openbsc/bsc_nat.h
+++ b/openbsc/include/openbsc/bsc_nat.h
@@ -79,6 +79,7 @@ struct bsc_connection {
 
 	/* mgcp related code */
 	char *_endpoint_status;
+	int number_endpoints;
 	int last_endpoint;
 
 	/* a back pointer */
diff --git a/openbsc/src/nat/bsc_mgcp_utils.c b/openbsc/src/nat/bsc_mgcp_utils.c
index d814f0dc3..f00292645 100644
--- a/openbsc/src/nat/bsc_mgcp_utils.c
+++ b/openbsc/src/nat/bsc_mgcp_utils.c
@@ -48,6 +48,7 @@ static int bsc_init_endps_if_needed(struct bsc_connection *con)
 	if (!con->cfg)
 		return -1;
 
+	con->number_endpoints = 31 * con->cfg->number_multiplexes;
 	con->_endpoint_status = talloc_zero_array(con, char,
 						  (32 * con->cfg->number_multiplexes) + 1);
 	return con->_endpoint_status == NULL;
@@ -55,7 +56,7 @@ static int bsc_init_endps_if_needed(struct bsc_connection *con)
 
 static int bsc_assign_endpoint(struct bsc_connection *bsc, struct sccp_connections *con)
 {
-	const int number_endpoints = 31 * bsc->cfg->number_multiplexes;
+	const int number_endpoints = bsc->number_endpoints;
 	int i;
 
 	for (i = 1; i <= number_endpoints; ++i) {
diff --git a/openbsc/src/nat/bsc_nat_vty.c b/openbsc/src/nat/bsc_nat_vty.c
index 01bee7489..2aefe9b25 100644
--- a/openbsc/src/nat/bsc_nat_vty.c
+++ b/openbsc/src/nat/bsc_nat_vty.c
@@ -113,6 +113,7 @@ static void config_write_bsc_single(struct vty *vty, struct bsc_config *bsc)
 		vty_out(vty, "  description %s%s", bsc->description, VTY_NEWLINE);
 	if (bsc->acc_lst_name)
 		vty_out(vty, "  access-list-name %s%s", bsc->acc_lst_name, VTY_NEWLINE);
+	vty_out(vty, "  number-multiplexes %d%s", bsc->number_multiplexes, VTY_NEWLINE);
 }
 
 static int config_write_bsc(struct vty *vty)
@@ -183,7 +184,7 @@ DEFUN(show_bsc_mgcp, show_bsc_mgcp_cmd, "show bsc mgcp NR",
 			continue;
 
 		vty_out(vty, "MGCP Status for %d%s", con->cfg->nr, VTY_NEWLINE);
-		endpoints = 31 * con->cfg->number_multiplexes;
+		endpoints = con->number_endpoints;
 		for (i = 1; i <= endpoints; ++i)
 			vty_out(vty, " Endpoint 0x%x %s%s", i,
 				con->_endpoint_status[i] == 0 ? "free" : "allocated",
@@ -630,6 +631,16 @@ DEFUN(cfg_bsc_acc_lst_name,
 	return CMD_SUCCESS;
 }
 
+DEFUN(cfg_bsc_nr_multip, cfg_bsc_nr_multip_cmd,
+      "number-multiplexes <1-1>",
+      "Number of multiplexes on a BSC\n" "Number of ports\n")
+{
+	struct bsc_config *conf = vty->index;
+
+	conf->number_multiplexes = atoi(argv[0]);
+	return CMD_SUCCESS;
+}
+
 DEFUN(cfg_bsc_paging,
       cfg_bsc_paging_cmd,
       "paging forbidden (0|1)",
@@ -730,6 +741,7 @@ int bsc_nat_vty_init(struct bsc_nat *nat)
 	install_element(NAT_BSC_NODE, &cfg_bsc_paging_cmd);
 	install_element(NAT_BSC_NODE, &cfg_bsc_desc_cmd);
 	install_element(NAT_BSC_NODE, &cfg_bsc_acc_lst_name_cmd);
+	install_element(NAT_BSC_NODE, &cfg_bsc_nr_multip_cmd);
 
 	mgcp_vty_init();