commit 36c7b33ccc66eee29efa98120e00952532c8e122
author Vadim Yanitskiy <axilirator@gmail.com> Sat Mar 31 05:23:09 2018 +0700
committer Vadim Yanitskiy <axilirator@gmail.com> Thu May 31 16:12:14 2018 +0000
tree 13b207fdb20dca1a0dd78ed8441c70178351e424
parent 72696040dfac41512c672f71f2b3712656641a7f

GSUP: introduce new messages for SS/USSD payloads

In order to be able to transfer SS/USSD messages via GSUP,
this change introduces the following new message types:

  - OSMO_GSUP_MSGT_PROC_SS_*,

and the following new IE:

  - OSMO_GSUP_SS_INFO_IE

which represents an ASN.1 encoded MAP payload coming to/from
the mobile station 'as is', without any transcoding.

Change-Id: Ie17a78043a35fffbdd59e80fd2b2da39cce5e532
Related: OS#1597

src/gsm/gsup.c

diff --git a/src/gsm/gsup.c b/src/gsm/gsup.c
index 8663f44..b4b60b2 100644
--- a/src/gsm/gsup.c
+++ b/src/gsm/gsup.c
@@ -62,6 +62,11 @@
 	OSMO_VALUE_STRING(OSMO_GSUP_MSGT_LOCATION_CANCEL_REQUEST),
 	OSMO_VALUE_STRING(OSMO_GSUP_MSGT_LOCATION_CANCEL_ERROR),
 	OSMO_VALUE_STRING(OSMO_GSUP_MSGT_LOCATION_CANCEL_RESULT),
+
+	OSMO_VALUE_STRING(OSMO_GSUP_MSGT_PROC_SS_REQUEST),
+	OSMO_VALUE_STRING(OSMO_GSUP_MSGT_PROC_SS_ERROR),
+	OSMO_VALUE_STRING(OSMO_GSUP_MSGT_PROC_SS_RESULT),
+
 	{ 0, NULL }
 };
 
@@ -393,6 +398,11 @@
 			gsup_msg->session_state = *value;
 			break;
 
+		case OSMO_GSUP_SS_INFO_IE:
+			gsup_msg->ss_info = value;
+			gsup_msg->ss_info_len = value_len;
+			break;
+
 		default:
 			LOGP(DLGSUP, LOGL_NOTICE,
 			     "GSUP IE type %d unknown\n", iei);
@@ -580,6 +590,11 @@
 		msgb_tlv_put(msg, OSMO_GSUP_SESSION_STATE_IE, sizeof(u8), &u8);
 	}
 
+	if (gsup_msg->ss_info) {
+		msgb_tlv_put(msg, OSMO_GSUP_SS_INFO_IE,
+				gsup_msg->ss_info_len, gsup_msg->ss_info);
+	}
+
 	return 0;
 }