Forward GPRS SUSPEND REQ from BTS to SGSN using BSSGP
As specified in 3GPP TS 03.60 Section 16.2.1 and 44.018 Section 3.4.15,
a Class B MS is sending a "RR GPRS SUSPEND REQ" via a DCCH to the BTS if
it wants to suspend GPRS services. As of
Change-Id I3c1af662c8f0d3d22da200638480f6ef05c3ed1f, OsmoBTS forwards
this via the PCU socket, so we need to pick it up and send it via BSSGP
to the SGSN.
Change-Id: I7b4beb413a6f974373a404b5a11c44d86ba695d3
Closes: OS#2249
diff --git a/include/osmocom/pcu/pcuif_proto.h b/include/osmocom/pcu/pcuif_proto.h
index b06077c..144fba6 100644
--- a/include/osmocom/pcu/pcuif_proto.h
+++ b/include/osmocom/pcu/pcuif_proto.h
@@ -12,6 +12,7 @@
#define PCU_IF_MSG_DATA_REQ 0x00 /* send data to given channel */
#define PCU_IF_MSG_DATA_CNF 0x01 /* confirm (e.g. transmission on PCH) */
#define PCU_IF_MSG_DATA_IND 0x02 /* receive data from given channel */
+#define PCU_IF_MSG_SUSP_REQ 0x03 /* BTS forwards GPRS SUSP REQ to PCU */
#define PCU_IF_MSG_RTS_REQ 0x10 /* ready to send request */
#define PCU_IF_MSG_DATA_CNF_DT 0x11 /* confirm (with direct tlli) */
#define PCU_IF_MSG_RACH_IND 0x22 /* receive RACH */
@@ -171,6 +172,13 @@
uint8_t identity_lv[9];
} __attribute__ ((packed));
+/* BTS tells PCU about a GPRS SUSPENSION REQUEST received on DCCH */
+struct gsm_pcu_if_susp_req {
+ uint32_t tlli;
+ uint8_t ra_id[6];
+ uint8_t cause;
+} __attribute__ ((packed));
+
struct gsm_pcu_if {
/* context based information */
uint8_t msg_type; /* message type */
@@ -182,6 +190,7 @@
struct gsm_pcu_if_data data_cnf;
struct gsm_pcu_if_data_cnf_dt data_cnf_dt;
struct gsm_pcu_if_data data_ind;
+ struct gsm_pcu_if_susp_req susp_req;
struct gsm_pcu_if_rts_req rts_req;
struct gsm_pcu_if_rach_ind rach_ind;
struct gsm_pcu_if_txt_ind txt_ind;