Change in osmo-msc[master]: msc_a: add callref as call id to ASSIGNMENT REQ.

[dexter]

dexter has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-msc/+/18692 )


Change subject: msc_a: add callref as call id to ASSIGNMENT REQ.
......................................................................

msc_a: add callref as call id to ASSIGNMENT REQ.

The BSSMAP message ASSIGNMENT REQUEST may contain an optional CALL
IDENTIFIER IE. While this IE is optional some BSC implementions may
require it.

Change-Id: I4288f47e4a6d61ec672f431723f6e72c7c6b0799
Related: OS#4582
---
M include/osmocom/msc/ran_msg.h
M src/libmsc/msc_a.c
M src/libmsc/ran_msg_a.c
3 files changed, 9 insertions(+), 1 deletion(-)



  git pull ssh://gerrit.osmocom.org:29418/osmo-msc refs/changes/92/18692/1

diff --git a/include/osmocom/msc/ran_msg.h b/include/osmocom/msc/ran_msg.h
index 1b0e2e8..3b08b46 100644
--- a/include/osmocom/msc/ran_msg.h
+++ b/include/osmocom/msc/ran_msg.h
@@ -86,6 +86,8 @@
 	enum nsap_addr_enc rab_assign_addr_enc;
 	bool osmux_present;
 	uint8_t osmux_cid;
+	bool call_id_present;
+	uint32_t call_id;
 };
 
 struct ran_cipher_mode_command {
diff --git a/src/libmsc/msc_a.c b/src/libmsc/msc_a.c
index bc5b7ea..85c92d0 100644
--- a/src/libmsc/msc_a.c
+++ b/src/libmsc/msc_a.c
@@ -541,6 +541,8 @@
 			.channel_type = &channel_type,
 			.osmux_present = msc_a->cc.call_leg->rtp[RTP_TO_RAN]->use_osmux,
 			.osmux_cid = msc_a->cc.call_leg->rtp[RTP_TO_RAN]->local_osmux_cid,
+			.call_id_present = true,
+			.call_id = cc_trans->callref
 		},
 	};
 	if (msc_a_ran_down(msc_a, MSC_ROLE_I, &msg)) {
diff --git a/src/libmsc/ran_msg_a.c b/src/libmsc/ran_msg_a.c
index cb228ef..2859069 100644
--- a/src/libmsc/ran_msg_a.c
+++ b/src/libmsc/ran_msg_a.c
@@ -956,6 +956,7 @@
 	struct sockaddr_storage rtp_addr;
 	struct sockaddr_storage *use_rtp_addr = NULL;
 	struct msgb *msg;
+	const uint32_t *call_id = NULL;
 	int rc;
 
 	if (!ac->channel_type) {
@@ -996,7 +997,10 @@
 		}
 	}
 
-	msg = gsm0808_create_ass(ac->channel_type, NULL, use_rtp_addr, use_scl, NULL);
+	if(ac->call_id_present)
+		call_id = &ac->call_id;
+
+	msg = gsm0808_create_ass(ac->channel_type, NULL, use_rtp_addr, use_scl, call_id);
 	if (ac->osmux_present)
 		_gsm0808_assignment_extend_osmux(msg, ac->osmux_cid);
 	return msg;

-- 
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Gerrit-Project: osmo-msc
Gerrit-Branch: master
Gerrit-Change-Id: I4288f47e4a6d61ec672f431723f6e72c7c6b0799
Gerrit-Change-Number: 18692
Gerrit-PatchSet: 1
Gerrit-Owner: dexter <pmaier at sysmocom.de>
Gerrit-MessageType: newchange
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