diff options
Diffstat (limited to 'pcu/PCU_Tests.ttcn')
| -rw-r--r-- | pcu/PCU_Tests.ttcn | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/pcu/PCU_Tests.ttcn b/pcu/PCU_Tests.ttcn index 3c8be304..9bcf9c60 100644 --- a/pcu/PCU_Tests.ttcn +++ b/pcu/PCU_Tests.ttcn @@ -1831,6 +1831,98 @@ testcase TC_paging_ps_from_sgsn_ptp() runs on RAW_PCU_Test_CT { f_tc_paging_ps_from_sgsn(mp_gb_cfg.bvci); } +/* Verify osmo-pcu handles DL UNIT_DATA from SGSN with IMSI IE correctly. See OS#4729 */ +testcase TC_bssgp_dl_unitdata_with_valid_imsi() runs on RAW_PCU_Test_CT { + var RlcmacDlBlock dl_block; + var octetstring data := f_rnd_octstring(10); + var uint32_t sched_fn; + var uint32_t dl_fn; + var GprsMS ms; + + /* Initialize NS/BSSGP side */ + f_init_bssgp(); + /* Initialize GPRS MS side */ + f_init_gprs_ms(); + ms := g_ms[0]; /* We only use first MS in this test */ + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename()); + + /* Establish BSSGP connection to the PCU */ + f_bssgp_establish(); + f_bssgp_client_llgmm_assign('FFFFFFFF'O, ms.tlli); + + /* Establish an Uplink TBF */ + f_ms_establish_ul_tbf(ms); + + /* Fake GMM GPRS Attach or similar, PCU doesn't care about upper layers here */ + f_ms_tx_ul_data_block_multi(ms, 1, with_tlli := true); + f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, sched_fn); + /* DL ACK/NACK sets poll+rrbp requesting PACKET CONTROL ACK */ + f_ms_tx_ul_block(ms, ts_RLCMAC_CTRL_ACK(ms.tlli), sched_fn); + + /* UL block should be received in SGSN */ + BSSGP[0].receive(tr_BSSGP_UL_UD(ms.tlli, mp_gb_cfg.cell_id)); + + /* Now SGSN sends some DL data, PCU will page on CCCH (PCH) */ + BSSGP[0].send(ts_BSSGP_DL_UD(ms.tlli, data, imsi := ts_BSSGP_IMSI(ms.imsi))); + f_ms_exp_dl_tbf_ass_ccch(ms, PCU_IF_SAPI_PCH); + + /* Wait timer X2002 and DL block is available after CCCH IMM ASS: */ + f_sleep(X2002); + f_rx_rlcmac_dl_block_exp_data(dl_block, dl_fn, data, 0); + + /* ACK the DL block */ + f_acknackdesc_ack_block(ms.dl_tbf.acknack_desc, dl_block, '1'B); + f_ms_tx_ul_block(ms, ts_RLCMAC_DL_ACK_NACK(ms.dl_tbf.tfi, ms.dl_tbf.acknack_desc), + f_dl_block_ack_fn(dl_block, dl_fn)); + + f_shutdown(__BFILE__, __LINE__, final := true); +} + +/* Verify osmo-pcu acts on incorrect IMSI IE content in DL UNIT_DATA from SGSN. See OS#4729 */ +testcase TC_bssgp_dl_unitdata_with_invalid_imsi() runs on RAW_PCU_Test_CT { + var RlcmacDlBlock dl_block; + var octetstring data := f_rnd_octstring(10); + var uint32_t sched_fn; + var uint32_t dl_fn; + var GprsMS ms; + + /* Initialize NS/BSSGP side */ + f_init_bssgp(); + /* Initialize GPRS MS side */ + f_init_gprs_ms(); + ms := g_ms[0]; /* We only use first MS in this test */ + + /* Initialize the PCU interface abstraction */ + f_init_raw(testcasename()); + + /* Establish BSSGP connection to the PCU */ + f_bssgp_establish(); + f_bssgp_client_llgmm_assign('FFFFFFFF'O, ms.tlli); + + /* Establish an Uplink TBF */ + f_ms_establish_ul_tbf(ms); + + /* Fake GMM GPRS Attach or similar, PCU doesn't care about upper layers here */ + f_ms_tx_ul_data_block_multi(ms, 1, with_tlli := true); + f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, sched_fn); + /* DL ACK/NACK sets poll+rrbp requesting PACKET CONTROL ACK */ + f_ms_tx_ul_block(ms, ts_RLCMAC_CTRL_ACK(ms.tlli), sched_fn); + + /* UL block should be received in SGSN */ + BSSGP[0].receive(tr_BSSGP_UL_UD(ms.tlli, mp_gb_cfg.cell_id)); + + /* Now SGSN sends some DL data with an invalid IMSI */ + BSSGP[0].send(ts_BSSGP_DL_UD(ms.tlli, data, imsi := ts_BSSGP_IMSI('1122'H))); + + BSSGP_SIG[0].receive(tr_BSSGP_STATUS(omit, BSSGP_CAUSE_CONDITIONAL_IE_ERROR, ?)); + + /* TODO: make sure no data is sent over PCU -> MS */ + + f_shutdown(__BFILE__, __LINE__, final := true); +} + private function f_TC_egprs_pkt_chan_req(in EGPRSPktChRequest req, template GsmRrMessage t_imm_ass := ?, PCUIF_BurstType bt := BURST_TYPE_1) @@ -2359,6 +2451,8 @@ control { execute( TC_paging_ps_from_sgsn_sign_ptmsi() ); execute( TC_paging_ps_from_sgsn_sign() ); execute( TC_paging_ps_from_sgsn_ptp() ); + execute( TC_bssgp_dl_unitdata_with_valid_imsi() ); + execute( TC_bssgp_dl_unitdata_with_invalid_imsi() ); /* EGPRS specific test cases */ execute( TC_egprs_pkt_chan_req_signalling() ); |