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osmo-ttcn3-hacks
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bts: Fix race condition during init_rsl receiving from multiple TRX 

When several TRX are set up, it can be that in between a RSLEM_EV_TRX_UP
event and the related tr_RSL_RF_RES_IND for that TRX, we receive a
RSLEM_EV_TRX_UP from another TRX which got just connected in parallel.

Change-Id: I1296c76c1d97e6704340484994ff3921975146b9
This commit is contained in:
Pau Espin 2020-10-16 13:52:28 +02:00
parent 023b61b2cb
commit 9a053c07c9
1 changed files with 20 additions and 3 deletions
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23
bts/BTS_Tests.ttcn
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@ -194,8 +194,11 @@ type component ConnHdlr extends RSL_DchanHdlr, lapdm_test_CT {
private function f_init_rsl(charstring id) runs on test_CT {
var bitstring trx_mask := '00000000'B;
var bitstring rfind_mask := '00000000'B;
var integer trx_count := 0;
var integer rfind_count := 0;
var RSLEm_Event ev;
var ASP_RSL_Unitdata rx_ud;
timer T;
vc_IPA := IPA_Emulation_CT.create(id & "-RSL-IPA");
@ -220,14 +223,28 @@ private function f_init_rsl(charstring id) runs on test_CT {
log2str("Duplicate RSL stream ID (", ev.sid, ")"));
}
/* This message (RF RESource INDication) is sent by the IUT itself */
RSL_CCHAN.receive(tr_ASP_RSL_UD(tr_RSL_RF_RES_IND, ev.sid));
trx_mask[enum2int(ev.sid)] := '1'B;
trx_count := trx_count + 1;
log(trx_count, "/", mp_transceiver_num, " transceiver(s) connected");
if (trx_count < mp_transceiver_num) { repeat; }
repeat;
}
/* This message (RF RESource INDication) is sent by the IUT itself */
[] RSL_CCHAN.receive(tr_ASP_RSL_UD(tr_RSL_RF_RES_IND, ?)) -> value rx_ud {
if (trx_mask[enum2int(rx_ud.streamId)] == '0'B) {
Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail,
log2str("Got RF Resource Indication before RSLEM_EV_TRX_UP (", rx_ud.streamId, ")"));
}
if (rfind_mask[enum2int(rx_ud.streamId)] == '1'B) {
Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail,
log2str("Duplicate RF Resource Indication ID (", rx_ud.streamId, ")"));
}
rfind_mask[enum2int(rx_ud.streamId)] := '1'B;
rfind_count := rfind_count + 1;
log(rfind_count, "/", mp_transceiver_num, " RF Resource Indication(s) received");
if (rfind_count < mp_transceiver_num) { repeat; }
}
/* osmo-bts may send us CCCH LOAD INDication or whatever else */
[] RSL_CCHAN.receive(ASP_RSL_Unitdata:?) { repeat; }
[] T.timeout {