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osmo-ttcn3-hacks
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pcu: Introduce TC_mt_ping_pong 

Change-Id: I0cbf4ac78e4c89f21b8c2b92eba1783667501e64
This commit is contained in:
Pau Espin 2020-01-23 14:35:15 +01:00
parent c04c69e689
commit e7cabe6f54
1 changed files with 66 additions and 0 deletions
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66
pcu/PCU_Tests_RAW.ttcn
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@ -1199,6 +1199,71 @@ testcase TC_mo_ping_pong() runs on RAW_PCU_Test_CT {
f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(dl_block.data.mac_hdr.hdr_ext.tfi, ack_nack_desc), 0, sched_fn);
}
/* Test scenario where SGSN wants to send some data against MS and it is
* answered by the MS on PDCH, so TBFs for downlink and later for uplink are created.
*/
testcase TC_mt_ping_pong() runs on RAW_PCU_Test_CT {
var GsmRrMessage rr_imm_ass;
var PacketUlAssign ul_tbf_ass;
var PacketDlAssign dl_tbf_ass;
var RlcmacDlBlock dl_block;
var PCUIF_Message pcu_msg;
var octetstring data := f_rnd_octstring(10);
var boolean ok;
var uint32_t sched_fn;
var OCT4 tlli := '00000001'O;
var AckNackDescription ack_nack_desc := valueof(t_AckNackDescription_init);
/* Initialize NS/BSSGP side */
f_init_bssgp();
/* 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, tlli);
/* SGSN sends some DL data, PCU will page on CCCH (PCH) */
BSSGP[0].send(ts_BSSGP_DL_UD(tlli, data));
f_pcuif_rx_pch_imm_tbf_ass(rr_imm_ass);
ok := f_imm_ass_verify_dl_tbf_ass(rr_imm_ass, dl_tbf_ass);
if (not ok) {
setverdict(fail, "Immediate Assignment not a Downlink TBF");
mtc.stop;
}
/* Wait timer X2002 and DL block is available after CCCH IMM ASS: */
f_sleep(X2002);
f_rx_rlcmac_dl_block_exp_data(dl_block, sched_fn, data, 0);
/* ACK the DL block */
f_acknackdesc_ack_block(ack_nack_desc, dl_block.data.mac_hdr.hdr_ext.bsn, '1'B);
f_tx_rlcmac_ul_block(ts_RLCMAC_DL_ACK_NACK(dl_block.data.mac_hdr.hdr_ext.tfi, ack_nack_desc), 0, sched_fn);
/* Now MS wants to answer the DL data, Establish an Uplink TBF */
ok := f_establish_tbf(rr_imm_ass);
if (not ok) {
setverdict(fail, "Failed to establish TBF");
mtc.stop;
}
ok := f_imm_ass_verify_ul_tbf_ass(rr_imm_ass, ul_tbf_ass);
if (not ok) {
setverdict(fail, "Immediate Assignment not an Uplink TBF");
mtc.stop;
}
/* Send one UL block and make sure it is ACKED fine */
f_tx_rlcmac_ul_n_blocks(ul_tbf_ass, 1);
f_rx_rlcmac_dl_block_exp_ack_nack(dl_block, sched_fn);
/* DL ACK/NACK sets poll+rrbp requesting PACKET CONTROL ACK */
f_tx_rlcmac_ul_block(ts_RLCMAC_CTRL_ACK(tlli), 0, sched_fn);
/* UL block should be received in SGSN */
BSSGP[0].receive(tr_BSSGP_UL_UD(tlli, mp_gb_cfg.cell_id));
}
/* Verify that if PCU doesn't get an ACK for first DL block after IMM ASS, it
* will retry by retransmitting both the IMM ASS + DL block after poll (ack)
* timeout occurs (specified by sent RRBP on DL block). */
@ -1437,6 +1502,7 @@ control {
execute( TC_t3169() );
execute( TC_t3193() );
execute( TC_mo_ping_pong() );
execute( TC_mt_ping_pong() );
execute( TC_imm_ass_dl_block_retrans() );
execute( TC_paging_cs_from_bts() );
execute (TC_paging_cs_from_sgsn_sign() );