gprs: Add subscriber functions to create/handle GSUP messages
This patch extends gprs_subscr_query_auth_info and
gprs_subscr_location_update to create GSUP messages with the help of
a static gprs_subscr_tx_gsup_message function. A corresponding
gprs_subscr_rx_gsup_message is added which takes a messages, gets the
subscr, and updates it accordingly.
Sponsored-by: On-Waves ehf
[hfreyther: Added a msgb_free gprs_subscr_tx_gsup_message]
diff --git a/openbsc/include/openbsc/gprs_sgsn.h b/openbsc/include/openbsc/gprs_sgsn.h
index 61b84d8..8019ad1 100644
--- a/openbsc/include/openbsc/gprs_sgsn.h
+++ b/openbsc/include/openbsc/gprs_sgsn.h
@@ -315,6 +315,7 @@
void gprs_subscr_put_and_cancel(struct gsm_subscriber *subscr);
void gprs_subscr_update(struct gsm_subscriber *subscr);
void gprs_subscr_update_auth_info(struct gsm_subscriber *subscr);
+int gprs_subscr_rx_gsup_message(struct msgb *msg);
/* Called on subscriber data updates */
void sgsn_update_subscriber_data(struct sgsn_mm_ctx *mmctx,