pcu: TC_paging_cs_from_sgsn_*: Fix race condition between BSSGP tx and RLCMAC rx
It can happen that the RLCMAC req arrives at osmo-pcu before the CS_PAGING we send to it over BSSGP, in which case osmo-pcu will schedule an RLCMAC DL Dummy Block. Take into account this scenario to avoid failing id it occurs. Change-Id: I30da93835c7738aefcd84691d83f39759dd4b599
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@ -3627,8 +3627,16 @@ runs on RAW_PCU_Test_CT {
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BSSGP[0].send(ts_BSSGP_CS_PAGING_IMSI(bvci, imsi));
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}
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/* Receive it on BTS side towards MS */
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f_rx_rlcmac_dl_block_exp_pkt_pag_req(dl_block);
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/* Now receive it on BTS side towards MS.
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* Skip any dummy blocks in case the PCUIF req arrives before the BSSP CS_PAGING:
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*/
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f_rx_rlcmac_dl_block_skip_dummy(dl_block, max_dummy := 10);
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if (not match(dl_block, tr_RLCMAC_PACKET_PAG_REQ())) {
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setverdict(fail, "Failed to match Packet Paging Request: ",
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dl_block, " vs ", tr_RLCMAC_PACKET_PAG_REQ());
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f_shutdown(__BFILE__, __LINE__);
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}
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/* Make sure that Packet Paging Request contains the same P-TMSI/IMSI */
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var PacketPagingReq req := dl_block.ctrl.payload.u.paging;
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