gsm_04_80: Add untested code for USSD notification...

One should be able to send a USSD Notification to a given
subscriber if we has an active link...

Conflicts:

	openbsc/src/vty_interface_layer3.c

2 files changed, 24 insertions, 0 deletions

diff --git a/openbsc/include/openbsc/gsm_04_80.h b/openbsc/include/openbsc/gsm_04_80.h
index 7c58c56ef..63262ea18 100644
--- a/openbsc/include/openbsc/gsm_04_80.h
+++ b/openbsc/include/openbsc/gsm_04_80.h
@@ -25,4 +25,6 @@ struct msgb *gsm0480_create_unstructuredSS_Notify(const char *text);
 int gsm0480_wrap_invoke(struct msgb *msg, int op, int link_id);
 int gsm0480_wrap_facility(struct msgb *msg);
 
+int gsm0480_send_ussdNotify(struct gsm_lchan *lchan, const char *text);
+
 #endif
diff --git a/openbsc/src/gsm_04_80.c b/openbsc/src/gsm_04_80.c
index ebae31f87..4273ad6eb 100644
--- a/openbsc/src/gsm_04_80.c
+++ b/openbsc/src/gsm_04_80.c
@@ -453,3 +453,25 @@ int gsm0480_send_ussd_reject(const struct msgb *in_msg,
 
 	return gsm48_sendmsg(msg, NULL);
 }
+
+int gsm0480_send_ussdNotify(struct gsm_lchan *lchan, const char *text)
+{
+	struct gsm48_hdr *gh;
+	struct msgb *msg;
+
+	msg = gsm0480_create_unstructuredSS_Notify(text);
+	if (!msg)
+		return -1;
+
+	gsm0480_wrap_invoke(msg, GSM0480_OP_CODE_USS_NOTIFY, 0);
+	gsm0480_wrap_facility(msg);
+
+	msg->lchan = lchan;
+
+	/* And finally pre-pend the L3 header */
+	gh = (struct gsm48_hdr *) msgb_push(msg, sizeof(*gh));
+	gh->proto_discr = GSM48_PDISC_NC_SS;
+	gh->msg_type = GSM0480_MTYPE_REGISTER;
+
+	return gsm48_sendmsg(msg, NULL);
+}