laforge has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/32555 ) Change subject: WIP: bsc: ASCI Assignment test (VBS/VGCS) ...................................................................... WIP: bsc: ASCI Assignment test (VBS/VGCS) Change-Id: I9b824a08d3948dc01e4748d4a4d61b889d31e5ff --- M bsc/BSC_Tests.ttcn A bsc/BSC_Tests_ASCI.ttcn 2 files changed, 159 insertions(+), 1 deletion(-) git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/55/32555/1 diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn index 878083e..4e72383 100644 --- a/bsc/BSC_Tests.ttcn +++ b/bsc/BSC_Tests.ttcn @@ -23,6 +23,7 @@ friend module BSC_Tests_VAMOS; friend module BSC_Tests_CBSP; friend module BSC_Tests_LCLS; +friend module BSC_Tests_ASCI; import from Misc_Helpers all; import from General_Types all; @@ -106,7 +107,7 @@ * BTS 2 has BSIC 12, TSC = (BSIC & 7) = 4. * BTS 2 has BSIC 12, TSC = (BSIC & 7) = 4. */ -private const BtsParams c_BtsParams[NUM_BTS_CFG] := { +friend const BtsParams c_BtsParams[NUM_BTS_CFG] := { /* BTS0 */ { trx_num := 1, tsc := 2 }, /* BTS1 */ { trx_num := 1, tsc := 3 }, /* BTS2 */ { trx_num := 4, tsc := 4 }, diff --git a/bsc/BSC_Tests_ASCI.ttcn b/bsc/BSC_Tests_ASCI.ttcn new file mode 100644 index 0000000..27538a7 --- /dev/null +++ b/bsc/BSC_Tests_ASCI.ttcn @@ -0,0 +1,148 @@ +module BSC_Tests_ASCI { + +/* Integration Tests for OsmoBSC + * (C) 2023 by Harald Welte <laforge(a)gnumonks.org> + * All rights reserved. + * + * Released under the terms of GNU General Public License, Version 2 or + * (at your option) any later version. + * + * SPDX-License-Identifier: GPL-2.0-or-later + * + * This test suite tests OsmoBSC while emulating both multiple BTS + MS as + * well as the MSC. See README for more details. + */ + +import from General_Types all; +import from Osmocom_Types all; +import from GSM_Types all; +import from Misc_Helpers all; + +import from BSC_Tests all; +import from BSSAP_Types all; +import from BSSAP_CodecPort all; +import from BSSMAP_Templates all; +import from RSL_Types all; +import from RSL_Emulation all; +import from MGCP_Emulation all; + +import from MobileL3_CommonIE_Types all; +import from MobileL3_Types all; +import from L3_Templates all; +import from GSM_RR_Types all; + +import from MSC_ConnectionHandler all; +import from RAN_Adapter all; +import from RAN_Emulation all; + + +function f_gen_asci_ass_req(integer bssap_idx := 0, + template (value) BSSMAP_IE_ChannelType ch_type := ts_BSSMAP_IE_ChannelType, + template (value) OCT1 ass_requirement := '00'O, + template (value) BSSMAP_IE_CellIdentifier cell_id := ts_CellID_LAC_CI(1, 0), + template (value) GroupCallRef group_call_ref := '2342'O, + charstring aoip_tla :="1.2.3.4") +runs on MSC_ConnHdlr return template (value) PDU_BSSAP { + if (mp_bssap_cfg[bssap_idx].transport == BSSAP_TRANSPORT_AoIP) { + var template (value) BSSMAP_IE_AoIP_TransportLayerAddress tla := + f_ts_BSSMAP_IE_AoIP_TLA(aoip_tla, 2342); + return ts_BSSMAP_VGCS_VBS_AssignmentReq(ch_type, ass_requirement, cell_id, + group_call_ref, omit, tla); + } else { + var template (value) BSSMAP_IE_CircuitIdentityCode cic := ts_BSSMAP_IE_CIC(0,1); + return ts_BSSMAP_VGCS_VBS_AssignmentReq(ch_type, ass_requirement, cell_id, + group_call_ref, cic, omit); + } +} + + +private function f_tc_asci_assignment(charstring id) runs on MSC_ConnHdlr { + var PDU_BSSAP rx_bssap; + /* Hack: the proper way would be to wait for the BSSMAP VGCS Assignment Result and extract the + * actual assigned chan_nr from it. But osmo-bsc starts acting on the lchan even before we get a + * chance to evaluate the BSSMAP Handover Request ACK. So we need to assume that osmo-bsc will + * activate TS 1 and already set up this lchan's RSL emulation + * before we get started. */ + var RslChannelNr new_chan_nr := valueof(t_RslChanNr0(1, RSL_CHAN_NR_Bm_ACCH)); + f_rslem_register(0, new_chan_nr); + g_chan_nr := new_chan_nr; + var uint3_t expect_target_tsc := c_BtsParams[0].tsc; + f_sleep(1.0); + + f_create_mgcp_expect(ExpectCriteria:{omit,omit,omit}); + f_MscConnHdlr_init(g_pars.media_nr, "127.0.0.2", "127.0.0.3", FR_AMR); + var default as_media := activate(as_Media()); + + /* TODO: Encryption */ + var template (value) BSSMAP_IE_ChannelType ch_type := ts_BSSMAP_IE_ChannelType; + var template (value) BSSMAP_IE_CellIdentifier cell_id := ts_CellID_LAC_CI(1, 0); + var template (value) PDU_BSSAP ass_req := f_gen_asci_ass_req(ch_type := ch_type, cell_id := cell_id); + if (false) { /* VGCS/VBS ASS REQ in SCCP CR */ + BSSAP.send(ts_BSSAP_Conn_Req(g_pars.sccp_addr_bsc, g_pars.sccp_addr_msc, ass_req)); + BSSAP.receive(RAN_Conn_Prim:MSC_CONN_PRIM_CONF_IND); + } else { /* VGCS/VBS ASS REQ in SCCP DT1 */ + BSSAP.send(ts_BSSAP_Conn_Req(g_pars.sccp_addr_bsc, g_pars.sccp_addr_msc, omit)); + BSSAP.receive(RAN_Conn_Prim:MSC_CONN_PRIM_CONF_IND); + BSSAP.send(ass_req); + } + + alt { + [] BSSAP.receive(tr_BSSMAP_VGCS_VBS_AssignmentRes(ch_type, cell_id)) -> value rx_bssap { + if (g_pars.expect_ho_fail) { + Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, + "Expected ASCI Assignment to fail, but got success"); + } + } + [] BSSAP.receive(tr_BSSMAP_VGCS_VBS_AssignmentFail) -> value rx_bssap { + if (not g_pars.expect_ho_fail) { + Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, + "Expected ASCI Assignment to succeed, but got fail"); + } + /* TOOD: evaluate correct cause value. But osmo-bsc doesn't seem to send meaningful causes * yet! */ + BSSAP.receive(tr_BSSMAP_ClearRequest); + setverdict(pass); + return; + } + } + + /* The RSL Emulation magically accepts the Chan Activ behind the scenes. */ + + /* we're sure that the channel activation is done now, verify the parameters in it */ + var RSL_Message chan_act := f_rslem_get_last_act(RSL_PROC, 0, g_chan_nr); + /* TODO: Encryption */ + f_chan_act_verify_tsc(chan_act, expect_target_tsc); + + if (ispresent(rx_bssap.pdu.bssmap.vGCS_VBSAssignmentResult.speechCodec)) { + if (not g_pars.aoip) { + Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, + "Expected no Speech Codec (Chosen)"); + } + } else { + if (g_pars.aoip) { + Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, + "Expected Speech Codec (Chosen)"); + } + } + +} + +testcase TC_vbs_assignment() runs on test_CT { + var MSC_ConnHdlr vc_conn; + var TestHdlrParams pars := f_gen_test_hdlr_pars(); + + f_init(1, true); + f_sleep(1.0); + + vc_conn := f_start_handler(refers(f_tc_asci_assignment), pars); + vc_conn.done; + + f_shutdown_helper(); +} + +control { + execute( TC_vbs_assignment() ); + +} + + +} -- To view, visit https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/32555 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-ttcn3-hacks Gerrit-Branch: master Gerrit-Change-Id: I9b824a08d3948dc01e4748d4a4d61b889d31e5ff Gerrit-Change-Number: 32555 Gerrit-PatchSet: 1 Gerrit-Owner: laforge <laforge(a)osmocom.org> Gerrit-MessageType: newchange