From a5a4014d67a5eae045541681b94359eb4bf0bd18 Mon Sep 17 00:00:00 2001
From: Holger Hans Peter Freyther <zecke@selfish.org>
Date: Thu, 1 Apr 2010 08:47:12 +0200
Subject: nat: Allow to send MGCP messages from the BSC to the network

---
 openbsc/src/nat/bsc_filter.c         |  3 +++
 openbsc/tests/bsc-nat/bsc_nat_test.c | 12 ++++++++++++
 2 files changed, 15 insertions(+)

(limited to 'openbsc')

diff --git a/openbsc/src/nat/bsc_filter.c b/openbsc/src/nat/bsc_filter.c
index 1561676c9..891d4555d 100644
--- a/openbsc/src/nat/bsc_filter.c
+++ b/openbsc/src/nat/bsc_filter.c
@@ -67,6 +67,9 @@ static struct bsc_pkt_filter black_list[] = {
 static struct bsc_pkt_filter white_list[] = {
 	/* allow IPAC_PROTO_SCCP messages to both sides */
 	{ IPAC_PROTO_SCCP, ALLOW_ANY, ALLOW_ANY, ALLOW_ANY, FILTER_TO_BOTH },
+
+	/* allow MGCP messages to both sides */
+	{ NAT_IPAC_PROTO_MGCP, ALLOW_ANY, ALLOW_ANY, ALLOW_ANY, FILTER_TO_BOTH },
 };
 
 struct bsc_nat_parsed* bsc_nat_parse(struct msgb *msg)
diff --git a/openbsc/tests/bsc-nat/bsc_nat_test.c b/openbsc/tests/bsc-nat/bsc_nat_test.c
index 217c4f415..c3b86c060 100644
--- a/openbsc/tests/bsc-nat/bsc_nat_test.c
+++ b/openbsc/tests/bsc-nat/bsc_nat_test.c
@@ -89,6 +89,12 @@ static const u_int8_t bssmap_release_complete[] = {
 	0x05, 0x01, 0x02, 0x03, 0x00, 0x00, 0x03
 };
 
+/* MGCP wrap... */
+static const u_int8_t mgcp_msg[] = {
+	0x00, 0x03, 0xfc,
+	0x20, 0x20, 0x20,
+};
+
 struct filter_result {
 	const u_int8_t *data;
 	const u_int16_t length;
@@ -145,6 +151,12 @@ static const struct filter_result results[] = {
 		.dir = DIR_BSC,
 		.result = 0,
 	},
+	{
+		.data = mgcp_msg,
+		.length = ARRAY_SIZE(mgcp_msg),
+		.dir = DIR_MSC,
+		.result = 0,
+	},
 };
 
 static void test_filter(void)
-- 
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