[sccp] Parse the error message and add a unit test for it.
diff --git a/openbsc/src/sccp/sccp.c b/openbsc/src/sccp/sccp.c
index e0fd02e..d869bfa 100644
--- a/openbsc/src/sccp/sccp.c
+++ b/openbsc/src/sccp/sccp.c
@@ -490,6 +490,23 @@
return 0;
}
+static int _sccp_parse_err(struct msgb *msgb, struct sccp_parse_result *result)
+{
+ static const u_int32_t header_size = sizeof(struct sccp_proto_err);
+
+ struct sccp_proto_err *err;
+
+ if (msgb_l2len(msgb) < header_size) {
+ LOGP(DSCCP, LOGL_ERROR, "msgb < header_size %u %u\n",
+ msgb_l2len(msgb), header_size);
+ return -1;
+ }
+
+ err = (struct sccp_proto_err *) msgb->l2h;
+ result->data_len = 0;
+ result->destination_local_reference = &err->destination_local_reference;
+ return 0;
+}
/*
* Send UDT. Currently we have a fixed address...
@@ -1318,6 +1335,9 @@
case SCCP_MSG_TYPE_IT:
return _sccp_parse_it(msg, result);
break;
+ case SCCP_MSG_TYPE_ERR:
+ return _sccp_parse_err(msg, result);
+ break;
};
LOGP(DSCCP, LOGL_ERROR, "Unimplemented MSG Type: 0x%x\n", type);