Handle packet access reject during packet resource request
When Packet resource request is received, PCU will generate the
packet access reject if no resources are present. The encoding is done
based on section 7.1.3.2.1 and 8.1.2.5 of 44.060 version 7.27.0 Release 7.
This patch also includes the test case to validate the generated
packet access reject message.
This patch is integration tested on Osmo-trx setup with Ettus B210 board
and LG F70 MS with some simulation code changes in Osmo-pcu.
Change-Id: I05ff25124b58905586caa0c0c37023d69724f121
diff --git a/tests/tbf/TbfTest.cpp b/tests/tbf/TbfTest.cpp
index 7f4c6ac..aec6ef8 100644
--- a/tests/tbf/TbfTest.cpp
+++ b/tests/tbf/TbfTest.cpp
@@ -3242,6 +3242,114 @@
ARRAY_SIZE(default_categories),
};
+static void test_packet_access_rej_prr_no_other_tbfs()
+{
+ BTS the_bts;
+ uint32_t fn = 2654218;
+ int ts_no = 7;
+ uint8_t trx_no = 0;
+ uint32_t tlli = 0xffeeddcc;
+ struct gprs_rlcmac_ul_tbf *ul_tbf = NULL;
+
+ printf("=== start %s ===\n", __func__);
+
+ setup_bts(&the_bts, ts_no, 4);
+
+ int rc = 0;
+
+ ul_tbf = handle_tbf_reject(the_bts.bts_data(), NULL, tlli,
+ trx_no, ts_no);
+
+ OSMO_ASSERT(ul_tbf != 0);
+
+ /* trigger packet access reject */
+ uint8_t bn = fn2bn(fn);
+
+ rc = gprs_rlcmac_rcv_rts_block(the_bts.bts_data(),
+ trx_no, ts_no, fn, bn);
+
+ OSMO_ASSERT(rc == 0);
+
+ ul_tbf->handle_timeout();
+
+ printf("=== end %s ===\n", __func__);
+}
+
+static void test_packet_access_rej_prr()
+{
+ BTS the_bts;
+ uint32_t fn = 2654218;
+ uint16_t qta = 31;
+ int ts_no = 7;
+ uint8_t trx_no = 0;
+ RlcMacUplink_t ulreq = {0};
+ Packet_Resource_Request_t *presreq = NULL;
+ uint8_t ms_class = 11;
+ uint8_t egprs_ms_class = 11;
+ uint32_t rach_fn = fn - 51;
+ uint32_t sba_fn = fn + 52;
+ uint32_t tlli = 0xffeeddcc;
+ MS_Radio_Access_capability_t *pmsradiocap = NULL;
+ Multislot_capability_t *pmultislotcap = NULL;
+
+ printf("=== start %s ===\n", __func__);
+
+ setup_bts(&the_bts, ts_no, 4);
+
+ int rc = 0;
+
+ /*
+ * Trigger rach till resources(USF) exhaust
+ */
+ rc = the_bts.rcv_rach(0x78, rach_fn, qta, 0,
+ GSM_L1_BURST_TYPE_ACCESS_0);
+ rc = the_bts.rcv_rach(0x79, rach_fn, qta, 0,
+ GSM_L1_BURST_TYPE_ACCESS_0);
+ rc = the_bts.rcv_rach(0x7a, rach_fn, qta, 0,
+ GSM_L1_BURST_TYPE_ACCESS_0);
+ rc = the_bts.rcv_rach(0x7b, rach_fn, qta, 0,
+ GSM_L1_BURST_TYPE_ACCESS_0);
+ rc = the_bts.rcv_rach(0x7c, rach_fn, qta, 0,
+ GSM_L1_BURST_TYPE_ACCESS_0);
+ rc = the_bts.rcv_rach(0x7d, rach_fn, qta, 0,
+ GSM_L1_BURST_TYPE_ACCESS_0);
+ rc = the_bts.rcv_rach(0x7e, rach_fn, qta, 0,
+ GSM_L1_BURST_TYPE_ACCESS_0);
+
+ /* fake a resource request */
+ ulreq.u.MESSAGE_TYPE = MT_PACKET_RESOURCE_REQUEST;
+ presreq = &ulreq.u.Packet_Resource_Request;
+ presreq->PayloadType = GPRS_RLCMAC_CONTROL_BLOCK;
+ presreq->ID.UnionType = 1; /* != 0 */
+ presreq->ID.u.TLLI = tlli;
+ presreq->Exist_MS_Radio_Access_capability = 1;
+ pmsradiocap = &presreq->MS_Radio_Access_capability;
+ pmsradiocap->Count_MS_RA_capability_value = 1;
+ pmsradiocap->MS_RA_capability_value[0].u.Content.
+ Exist_Multislot_capability = 1;
+ pmultislotcap = &pmsradiocap->MS_RA_capability_value[0].
+ u.Content.Multislot_capability;
+
+ pmultislotcap->Exist_GPRS_multislot_class = 1;
+ pmultislotcap->GPRS_multislot_class = ms_class;
+ if (egprs_ms_class) {
+ pmultislotcap->Exist_EGPRS_multislot_class = 1;
+ pmultislotcap->EGPRS_multislot_class = egprs_ms_class;
+ }
+
+ send_ul_mac_block(&the_bts, trx_no, ts_no, &ulreq, sba_fn);
+
+ /* trigger packet access reject */
+ uint8_t bn = fn2bn(fn);
+
+ rc = gprs_rlcmac_rcv_rts_block(the_bts.bts_data(),
+ trx_no, ts_no, fn, bn);
+
+ OSMO_ASSERT(rc == 0);
+
+ printf("=== end %s ===\n", __func__);
+}
+
void test_packet_access_rej_epdan()
{
BTS the_bts;
@@ -3310,6 +3418,8 @@
test_immediate_assign_rej();
test_tbf_egprs_two_phase_puan();
test_packet_access_rej_epdan();
+ test_packet_access_rej_prr();
+ test_packet_access_rej_prr_no_other_tbfs();
if (getenv("TALLOC_REPORT_FULL"))
talloc_report_full(tall_pcu_ctx, stderr);