osmo-ttcn3-hacks/bsc/BSC_Tests.ttcn

6512 lines
220 KiB
Plaintext

module BSC_Tests {
/* Integration Tests for OsmoBSC
* (C) 2017-2018 by Harald Welte <laforge@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.
*
* There are test cases that run in so-called 'handler mode' and test cases
* that run directly on top of the BSSAP and RSL CodecPorts. The "handler mode"
* tests abstract the multiplexing/demultiplexing of multiple SCCP connections
* and/or RSL channels and are hence suitable for higher-level test cases, while
* the "raw" tests directly on top of the CodecPorts are more suitable for lower-
* level testing.
*/
import from Misc_Helpers all;
import from General_Types all;
import from Osmocom_Types all;
import from GSM_Types all;
import from IPL4asp_Types all;
import from BSSAP_Types all;
import from RAN_Adapter all;
import from BSSAP_CodecPort all;
import from BSSMAP_Templates all;
import from IPA_Emulation all;
import from IPA_CodecPort all;
import from IPA_Types all;
import from IPA_Testing all;
import from RSL_Types all;
import from RSL_Emulation all;
import from MGCP_Emulation all;
import from MGCP_Templates all;
import from MGCP_Types all;
import from MGCP_CodecPort all;
import from Osmocom_CTRL_Functions all;
import from Osmocom_CTRL_Types all;
import from Osmocom_CTRL_Adapter all;
import from StatsD_Types all;
import from StatsD_CodecPort all;
import from StatsD_CodecPort_CtrlFunct all;
import from StatsD_Checker all;
import from Osmocom_VTY_Functions all;
import from TELNETasp_PortType all;
import from MobileL3_CommonIE_Types all;
import from MobileL3_Types all;
import from MobileL3_RRM_Types all;
import from L3_Templates all;
import from GSM_RR_Types all;
import from SCCP_Templates all;
import from BSSMAP_Templates all;
import from SCCPasp_Types all;
import from GSM_SystemInformation all;
import from GSM_RestOctets all;
import from TCCConversion_Functions all;
const integer NUM_BTS := 3;
const integer NUM_MSC := 3;
const float T3101_MAX := 12.0;
/* make sure to sync this with the osmo-bts.cfg you're using */
const integer NUM_TCHH_PER_BTS := 2;
const integer NUM_TCHF_PER_BTS := 4;
const integer NUM_SDCCH_PER_BTS := 3;
/* per-BTS state which we keep */
type record BTS_State {
/* component reference to the IPA_Client component used for RSL */
IPA_Client rsl
}
/* Default list of counters for an 'msc' entity. */
const CounterNameVals counternames_msc_mscpool := {
{ "mscpool:subscr:new", 0 },
{ "mscpool:subscr:known", 0 },
{ "mscpool:subscr:reattach", 0 },
{ "mscpool:subscr:attach_lost", 0 },
{ "mscpool:subscr:paged", 0 }
};
/* Set of all System Information received during one RSL port's startup.
* Note that some System Information may be sent on RSL, but lacking actual SI data, to indicate that the BTS should not
* broadcast that SI type. That will be reflected as 'omit' here.
*/
type record SystemInformationConfig {
SystemInformationType1 si1 optional,
SystemInformationType2 si2 optional,
SystemInformationType2bis si2bis optional,
SystemInformationType2ter si2ter optional,
SI2quaterRestOctetsList si2quater optional,
SystemInformationType3 si3 optional,
SystemInformationType4 si4 optional,
/* TODO: replace with proper decoding of SI13, implement SI13 in GSM_SystemInformation.ttcn */
octetstring si13 optional,
SystemInformationType5 si5 optional,
SystemInformationType5bis si5bis optional,
SystemInformationType5ter si5ter optional,
SystemInformationType6 si6 optional
};
const SystemInformationConfig SystemInformationConfig_omit := {
si1 := omit,
si2 := omit,
si2bis := omit,
si2ter := omit,
si2quater := omit,
si3 := omit,
si4 := omit,
si13 := omit,
si5 := omit,
si5bis := omit,
si5ter := omit,
si6 := omit
};
/* tr_EUTRAN_CellDesc with defaults used in BSC_Tests.ttcn */
template EUTRAN_CellDesc tr_EUTRAN_CellDesc_default(template (present) uint16_t e_arfcn := ?,
template uint3_t meas_bw := 3)
:= tr_EUTRAN_CellDesc(e_arfcn := e_arfcn,
meas_bw_presence := '1'B,
meas_bw := meas_bw);
/* tr_EUTRAN_NeighbourCells with defaults used in BSC_Tests.ttcn */
template EUTRAN_NeighbourCells tr_EUTRAN_NeighbourCells_default(template EUTRAN_CellDescs cell_desc_list := { tr_EUTRAN_CellDesc_default },
template uint3_t prio := 3,
template (present) uint5_t thresh_high := 20,
template uint5_t thresh_low := 10,
template uint5_t qrxlevmin := 22)
:= tr_EUTRAN_NeighbourCells(
cell_desc_list := cell_desc_list,
prio_presence := '1'B,
prio := prio,
thresh_high := thresh_high,
thresh_low_presence := '1'B,
thresh_low := thresh_low,
qrxlevmin_presence := '1'B,
qrxlevmin := qrxlevmin);
template SystemInformationConfig SystemInformationConfig_default := {
si1 := {
cell_chan_desc := '8FB38000000000000000000000000000'O,
rach_control := {
max_retrans := RACH_MAX_RETRANS_7,
tx_integer := '1001'B,
cell_barr_access := false,
re_not_allowed := true,
acc := '0000010000000000'B
},
rest_octets := ?
},
si2 := {
bcch_freq_list := '00000000000000000000000000000000'O,
ncc_permitted := '11111111'B,
rach_control := {
max_retrans := RACH_MAX_RETRANS_7,
tx_integer := '1001'B,
cell_barr_access := false,
re_not_allowed := true,
acc := '0000010000000000'B
}
},
si2bis := omit,
si2ter := {
extd_bcch_freq_list := '8E320000000000000000000000000800'O,
rest_octets := ?
},
si2quater := {
tr_SI2quaterRestOctets_EUTRAN( repeated_neigh_cells := { tr_EUTRAN_NeighbourCells_default } )
},
si3 := {
cell_id := 0,
lai := {
mcc_mnc := '001F01'H,
lac := 1
},
ctrl_chan_desc := {
msc_r99 := true,
att := true,
bs_ag_blks_res := 1,
ccch_conf := CCHAN_DESC_1CCCH_COMBINED,
si22ind := false,
cbq3 := CBQ3_IU_MODE_NOT_SUPPORTED,
spare := '00'B,
bs_pa_mfrms := 3,
t3212 := 30
},
cell_options := {
dn_ind := false,
pwrc := false,
dtx := MS_SHALL_USE_UL_DTX,
radio_link_tout_div4 := 7
},
cell_sel_par := {
cell_resel_hyst_2dB := 2,
ms_txpwr_max_cch := 7,
acs := '0'B,
neci := true,
rxlev_access_min := 0
},
rach_control := {
max_retrans := RACH_MAX_RETRANS_7,
tx_integer := '1001'B,
cell_barr_access := false,
re_not_allowed := true,
acc := '0000010000000000'B
},
rest_octets := {
sel_params := {
presence := '0'B,
params := omit
},
pwr_offset := {
presence := '0'B,
offset := omit
},
si_2ter_ind := '1'B,
early_cm_ind := '0'B,
sched_where := {
presence := '0'B,
where := omit
},
gprs_ind := {
presence := '1'B,
ind := {
ra_colour := 0,
si13_pos := '0'B
}
},
umts_early_cm_ind := '1'B,
si2_quater_ind := {
presence := '1'B,
ind := '0'B
},
iu_mode_ind := omit,
si21_ind := {
presence := '0'B,
pos := omit
}
}
},
si4 := {
lai := {
mcc_mnc := '001F01'H,
lac := 1
},
cell_sel_par := {
cell_resel_hyst_2dB := 2,
ms_txpwr_max_cch := 7,
acs := '0'B,
neci := true,
rxlev_access_min := 0
},
rach_control := {
max_retrans := RACH_MAX_RETRANS_7,
tx_integer := '1001'B,
cell_barr_access := false,
re_not_allowed := true,
acc := '0000010000000000'B
},
cbch_chan_desc := {
iei := '64'O,
v := {
chan_nr := {
u := {
sdcch4 := {
tag := '001'B,
sub_chan := 2
}
},
tn := 0
},
tsc := 2,
h := false,
arfcn := 871,
maio_hsn := omit
}
},
cbch_mobile_alloc := omit,
rest_octets := {
sel_params := {
presence := '0'B,
params := omit
},
pwr_offset := {
presence := '0'B,
offset := omit
},
gprs_ind := {
presence := '1'B,
ind := {
ra_colour := 0,
si13_pos := '0'B
}
},
s_presence := '0'B,
s := omit
}
},
si13 := '9000185A6FC9E08410AB2B2B2B2B2B2B2B2B2B2B'O,
si5 := {
bcch_freq_list := '10000000000000000000000000000000'O
},
si5bis := omit,
si5ter := {
extd_bcch_freq_list := '9E050020000000000000000000000000'O
},
si6 := {
cell_id := 0,
lai := {
mcc_mnc := '001F01'H,
lac := 1
},
cell_options := {
dtx_ext := '1'B,
pwrc := false,
dtx := '01'B,
radio_link_timeout := '0111'B
},
ncc_permitted := '11111111'B,
rest_octets := ?
}
};
/* List of all the System Information received on all RSL ports */
type record of SystemInformationConfig SystemInformationConfig_list;
function f_sysinfo_dec_raw(inout SystemInformationConfig si, RSL_Message rsl)
{
var RSL_IE_Body sysinfo_type_ie;
var RSL_IE_SysinfoType si_type;
var octetstring data;
if (f_rsl_find_ie(rsl, RSL_IE_SYSINFO_TYPE, sysinfo_type_ie) == false) {
setverdict(fail, "Cannot find RSL_IE_SYSINFO_TYPE");
mtc.stop;
}
si_type := sysinfo_type_ie.sysinfo_type;
if (rsl.msg_type == RSL_MT_BCCH_INFO) {
var RSL_IE_Body bcch_ie;
if (f_rsl_find_ie(rsl, RSL_IE_FULL_BCCH_INFO, bcch_ie)) {
data := bcch_ie.other.payload;
}
} else if (rsl.msg_type == RSL_MT_SACCH_FILL) {
var RSL_IE_Body l3_ie;
if (f_rsl_find_ie(rsl, RSL_IE_L3_INFO, l3_ie)) {
data := l3_ie.l3_info.payload;
}
} else {
setverdict(fail, "Don't understand this System Information message");
mtc.stop;
}
var boolean handled := false;
if (rsl.msg_type == RSL_MT_BCCH_INFO) {
handled := true;
if (si_type == RSL_SYSTEM_INFO_1) {
if (not isbound(data)) {
si.si1 := omit;
} else {
si.si1 := dec_SystemInformation(data).payload.si1;
}
} else if (si_type == RSL_SYSTEM_INFO_2) {
if (not isbound(data)) {
si.si2 := omit;
} else {
si.si2 := dec_SystemInformation(data).payload.si2;
}
} else if (si_type == RSL_SYSTEM_INFO_2bis) {
if (not isbound(data)) {
si.si2bis := omit;
} else {
si.si2bis := dec_SystemInformation(data).payload.si2bis;
}
} else if (si_type == RSL_SYSTEM_INFO_2ter) {
if (not isbound(data)) {
si.si2ter := omit;
} else {
si.si2ter := dec_SystemInformation(data).payload.si2ter;
}
} else if (si_type == RSL_SYSTEM_INFO_2quater) {
if (not isbound(data)) {
si.si2quater := {};
} else {
var SystemInformationType2quater decoded := dec_SystemInformation(data).payload.si2quater;
/* this is a *record* of SI2quaterRestOctets! (multiplexed) */
si.si2quater[decoded.rest_octets.si2quater_index] := decoded.rest_octets;
}
} else if (si_type == RSL_SYSTEM_INFO_3) {
if (not isbound(data)) {
si.si3 := omit;
} else {
si.si3 := dec_SystemInformation(data).payload.si3;
}
} else if (si_type == RSL_SYSTEM_INFO_4) {
if (not isbound(data)) {
si.si4 := omit;
} else {
si.si4 := dec_SystemInformation(data).payload.si4;
}
} else if (si_type == RSL_SYSTEM_INFO_13) {
if (not isbound(data)) {
si.si13 := omit;
} else {
si.si13 := dec_SystemInformation(data).payload.other;
}
} else {
handled := false;
}
} else if (rsl.msg_type == RSL_MT_SACCH_FILL) {
handled := true;
if (si_type == RSL_SYSTEM_INFO_5) {
if (not isbound(data)) {
si.si5 := omit;
} else {
si.si5 := dec_SystemInformation(data).payload.si5;
}
} else if (si_type == RSL_SYSTEM_INFO_5bis) {
if (not isbound(data)) {
si.si5bis := omit;
} else {
si.si5bis := dec_SystemInformation(data).payload.si5bis;
}
} else if (si_type == RSL_SYSTEM_INFO_5ter) {
if (not isbound(data)) {
si.si5ter := omit;
} else {
si.si5ter := dec_SystemInformation(data).payload.si5ter;
}
} else if (si_type == RSL_SYSTEM_INFO_6) {
if (not isbound(data)) {
si.si6 := omit;
} else {
si.si6 := dec_SystemInformation(data).payload.si6;
}
} else {
handled := false;
}
}
if (not handled) {
setverdict(fail, "Unexpected SI type in ", rsl.msg_type, " message: ", si_type);
}
}
type component test_CT extends CTRL_Adapter_CT {
/* Array of per-BTS state */
var BTS_State bts[NUM_BTS];
/* RSL common Channel Port (for RSL_Emulation) */
port RSL_CCHAN_PT RSL_CCHAN[NUM_BTS];
/* array of per-BTS RSL test ports */
port IPA_RSL_PT IPA_RSL[NUM_BTS];
port IPA_CODEC_PT IPA; /* Required for compilation of TC_rsl_unknown_unit_id() */
/* CTRL muxed over IPA in SCCPlite conn BSC<->MSC (or BSC-NAT) */
port IPA_CTRL_PT SCCPLITE_IPA_CTRL;
var MGCP_Emulation_CT vc_MGCP;
port TELNETasp_PT BSCVTY;
/* StatsD */
var StatsD_Checker_CT vc_STATSD;
var RAN_Adapter g_bssap[NUM_MSC];
/* for old legacy-tests only */
port BSSAP_CODEC_PT BSSAP;
/* are we initialized yet */
var boolean g_initialized := false;
/* Osmux is enabled through VTY */
var boolean g_osmux_enabled := false;
/*Configure T(tias) over VTY, seconds */
var integer g_bsc_sccp_timer_ias := 7 * 60;
/*Configure T(tiar) over VTY, seconds */
var integer g_bsc_sccp_timer_iar := 15 * 60;
/* global test case guard timer (actual timeout value is set in f_init()) */
timer T_guard := 30.0;
var CounterNameValsList g_ctr_msc;
/* System Information bytes as received during RSL startup, for each RSL[idx]. */
var SystemInformationConfig_list g_system_information := {};
}
modulepar {
/* IP address at which the BSC can be reached */
charstring mp_bsc_ip := "127.0.0.1";
/* port number to which to establish the IPA OML connections */
integer mp_bsc_oml_port := 3002;
/* port number to which to establish the IPA RSL connections */
integer mp_bsc_rsl_port := 3003;
/* port number to which to establish the IPA CTRL connection */
integer mp_bsc_ctrl_port := 4249;
/* port number to which to listen for STATSD metrics */
integer mp_bsc_statsd_port := 8125;
/* IP address at which the test binds */
charstring mp_test_ip := "127.0.0.1";
RAN_Configurations mp_bssap_cfg := {
{
transport := BSSAP_TRANSPORT_AoIP,
sccp_service_type := "mtp3_itu",
sctp_addr := { 23905, "127.0.0.1", 2905, "127.0.0.1" },
own_pc := 185, /* 0.23.1 first MSC emulation */
own_ssn := 254,
peer_pc := 187, /* 0.23.3 osmo-bsc */
peer_ssn := 254,
sio := '83'O,
rctx := 1
},
{
transport := BSSAP_TRANSPORT_AoIP,
sccp_service_type := "mtp3_itu",
sctp_addr := { 23906, "127.0.0.1", 2905, "127.0.0.1" },
own_pc := 2, /* 0.0.2 second MSC emulation */
own_ssn := 254,
peer_pc := 187, /* 0.23.3 osmo-bsc */
peer_ssn := 254,
sio := '83'O,
rctx := 2
},
{
transport := BSSAP_TRANSPORT_AoIP,
sccp_service_type := "mtp3_itu",
sctp_addr := { 23907, "127.0.0.1", 2905, "127.0.0.1" },
own_pc := 3, /* 0.0.3 third MSC emulation */
own_ssn := 254,
peer_pc := 187, /* 0.23.3 osmo-bsc */
peer_ssn := 254,
sio := '83'O,
rctx := 3
}
};
/* Whether to enable osmux tests. Can be dropped completely and enable
unconditionally once new version of osmo-bsc is released (current
version: 1.4.1) */
boolean mp_enable_osmux_test := true;
/* Value set in osmo-bsc.cfg "ms max power" */
uint8_t mp_exp_ms_power_level := 7;
}
private function f_gen_test_hdlr_pars(integer bssap_idx := 0) return TestHdlrParams {
var TestHdlrParams pars := valueof(t_def_TestHdlrPars);
if (mp_bssap_cfg[bssap_idx].transport == BSSAP_TRANSPORT_AoIP) {
pars.aoip := true;
} else {
pars.aoip := false;
}
pars.exp_ms_power_level := mp_exp_ms_power_level;
pars.mscpool.bssap_idx := bssap_idx;
return pars;
}
/* Convenience functions for rate counters using g_ctr_msc. */
private function f_ctrs_msc_init(integer mscs_count := NUM_MSC, CounterNameVals counternames := counternames_msc_mscpool) runs on test_CT {
g_ctr_msc := f_counter_name_vals_get_n(IPA_CTRL, "msc", mscs_count, counternames);
log("initial msc rate counters: ", g_ctr_msc);
}
private function f_ctrs_msc_add(integer msc_nr, charstring countername, integer val := 1) runs on test_CT {
f_counter_name_vals_list_add(g_ctr_msc, msc_nr, countername, val);
}
/* f_ctrs_msc_init();
* f_do_thing(on_msc := 0);
* f_do_thing(on_msc := 0);
* f_do_other(on_msc := 1);
* f_ctrs_msc_add(0, "thing", 2);
* f_ctrs_msc_add(1, "other");
* f_ctrs_msc_verify();
*/
private function f_ctrs_msc_verify() runs on test_CT {
log("verifying msc rate counters: ", g_ctr_msc);
f_counter_name_vals_expect_n(IPA_CTRL, "msc", g_ctr_msc);
}
/* convenience: f_ctrs_msc_add() and f_ctrs_msc_verify() in one call.
* f_ctrs_msc_init();
* f_do_thing(on_msc := 0);
* f_do_thing(on_msc := 0);
* f_do_thing(on_msc := 0);
* f_ctrs_msc_expect(0, "thing", 3);
*/
private function f_ctrs_msc_expect(integer msc_nr, charstring countername, integer val := 1) runs on test_CT {
f_ctrs_msc_add(msc_nr, countername, val);
f_ctrs_msc_verify();
}
private function f_shutdown_helper() runs on test_CT {
all component.stop;
setverdict(pass);
mtc.stop;
}
private function f_legacy_bssap_reset(integer bssap_idx := 0) runs on test_CT {
var BSSAP_N_UNITDATA_ind ud_ind;
timer T := 5.0;
BSSAP.send(ts_BSSAP_UNITDATA_req(g_bssap[bssap_idx].sccp_addr_peer, g_bssap[bssap_idx].sccp_addr_own,
ts_BSSMAP_Reset(0, g_osmux_enabled)));
T.start;
alt {
[] BSSAP.receive(tr_BSSAP_UNITDATA_ind(g_bssap[bssap_idx].sccp_addr_own, g_bssap[bssap_idx].sccp_addr_peer,
tr_BSSMAP_ResetAck(g_osmux_enabled))) {
log("Received RESET-ACK in response to RESET, we're ready to go!");
}
[] BSSAP.receive(tr_BSSAP_UNITDATA_ind(?, ?, tr_BSSMAP_Reset(g_osmux_enabled))) -> value ud_ind {
log("Respoding to inbound RESET with RESET-ACK");
BSSAP.send(ts_BSSAP_UNITDATA_req(ud_ind.callingAddress, ud_ind.calledAddress,
ts_BSSMAP_ResetAck(g_osmux_enabled)));
repeat;
}
[] BSSAP.receive { repeat; }
[] T.timeout { setverdict(fail, "Waiting for RESET-ACK after sending RESET"); }
}
}
type record IPA_Client {
/* IPA Emulation component reference */
IPA_Emulation_CT vc_IPA,
/* Unit-ID and other CCM parameters to use for IPA client emulation */
IPA_CCM_Parameters ccm_pars,
/* String identifier for this IPA Client */
charstring id,
/* Associated RSL Emulation Component (if any). Only used in "Handler mode" */
RSL_Emulation_CT vc_RSL optional
}
/*! Start the IPA/RSL related bits for one IPA_Client.
* \param clnt IPA_Client for which to establish
* \param bsc_host IP address / hostname of the BSC
* \param bsc_port TCP port number of the BSC
* \param i number identifying this BTS
* \param handler_mode Start an RSL_Emulation_CT component (true) or not (false) */
function f_ipa_rsl_start(inout IPA_Client clnt, charstring bsc_host, PortNumber bsc_port, integer i,
boolean handler_mode := false)
runs on test_CT {
timer T := 10.0;
clnt.id := "IPA" & int2str(i) & "-RSL";
clnt.vc_IPA := IPA_Emulation_CT.create(clnt.id & "-IPA");
clnt.ccm_pars := c_IPA_default_ccm_pars;
clnt.ccm_pars.name := "Osmocom TTCN-3 BTS Simulator";
clnt.ccm_pars.unit_id := int2str(1234+i) & "/0/0";
if (handler_mode) {
clnt.vc_RSL := RSL_Emulation_CT.create(clnt.id & "-RSL");
connect(clnt.vc_RSL:CCHAN_PT, self:RSL_CCHAN[i]);
}
map(clnt.vc_IPA:IPA_PORT, system:IPA_CODEC_PT);
if (handler_mode) {
connect(clnt.vc_IPA:IPA_RSL_PORT, clnt.vc_RSL:IPA_PT);
} else {
connect(clnt.vc_IPA:IPA_RSL_PORT, self:IPA_RSL[i]);
}
clnt.vc_IPA.start(IPA_Emulation.main_client(bsc_host, bsc_port, "", 10000+i, clnt.ccm_pars));
if (handler_mode) {
clnt.vc_RSL.start(RSL_Emulation.main());
return;
}
/* wait for IPA RSL link to connect and send ID ACK */
T.start;
alt {
[] IPA_RSL[i].receive(tr_ASP_IPA_EV(ASP_IPA_EVENT_ID_ACK)) {
T.stop;
IPA_RSL[i].send(ts_ASP_RSL_UD(ts_RSL_PAGING_LOAD_IND(23)));
}
[] IPA_RSL[i].receive(ASP_IPA_Event:?) { repeat }
[] IPA_RSL[i].receive { repeat }
[] T.timeout {
setverdict(fail, "Timeout RSL waiting for ASP_IPA_EVENT_ID_ACK");
mtc.stop;
}
}
}
function f_ipa_rsl_stop(inout IPA_Client clnt) runs on test_CT {
if (not isbound(clnt) or not isbound(clnt.vc_IPA)) {
return;
}
clnt.vc_IPA.stop;
if (isbound(clnt.vc_RSL)) {
clnt.vc_RSL.stop;
}
}
/* Wait for the OML connection to be brought up by the external osmo-bts-omldummy */
function f_wait_oml(integer bts_nr, charstring status, float secs_max) runs on test_CT {
timer T := secs_max;
T.start;
while (true) {
if (f_ctrl_get_bts(IPA_CTRL, bts_nr, "oml-connection-state") == status) {
T.stop;
/* the 'degraded' state exists from OML connection time, and we have to wait
* until all MO's are initialized */
T.start(1.0);
T.timeout;
return;
}
f_sleep(0.1);
if (not T.running) {
setverdict(fail, "Timeout waiting for BTS" & int2str(bts_nr) & " oml-connection-state ", status);
mtc.stop;
}
}
}
/* global altstep for global guard timer; also takes care of responding RESET witH RESET-ACK */
altstep as_Tguard() runs on test_CT {
var BSSAP_N_UNITDATA_ind ud_ind;
[] T_guard.timeout {
setverdict(fail, "Timeout of T_guard");
mtc.stop;
}
/* always respond with RESET ACK to RESET */
[] BSSAP.receive(tr_BSSAP_UNITDATA_ind(?, ?, tr_BSSMAP_Reset(g_osmux_enabled))) -> value ud_ind {
BSSAP.send(ts_BSSAP_UNITDATA_req(ud_ind.callingAddress, ud_ind.calledAddress,
ts_BSSMAP_ResetAck(g_osmux_enabled)));
repeat;
}
}
altstep no_bssmap_reset() runs on test_CT {
[] BSSAP.receive(tr_BSSAP_UNITDATA_ind(?, ?, tr_BSSMAP_Reset(g_osmux_enabled))) {
setverdict(fail, "unexpected BSSMAP Reset");
mtc.stop;
}
}
function f_init_mgcp(charstring id) runs on test_CT {
id := id & "-MGCP";
var MGCPOps ops := {
create_cb := refers(MGCP_Emulation.ExpectedCreateCallback),
unitdata_cb := refers(MGCP_Emulation.DummyUnitdataCallback)
};
var MGCP_conn_parameters mgcp_pars := {
callagent_ip := mp_bsc_ip,
callagent_udp_port := -1,
mgw_ip := mp_test_ip,
mgw_udp_port := 2427,
/* Enable it for SCCPlite, since we have 2 MGCP sockets towards MGW (UDP one +
the on with MGCP over IPA forwarded from MSC one) */
multi_conn_mode := (mp_bssap_cfg[0].transport == BSSAP_TRANSPORT_SCCPlite_SERVER)
};
vc_MGCP := MGCP_Emulation_CT.create(id);
vc_MGCP.start(MGCP_Emulation.main(ops, mgcp_pars, id));
}
/* Enable or disable (current default) Osmux. When enabling, BSSMAP Reset
* contains extra IE (OsmuxSupport) and osmo-bsc will handle AssignReq with
* OsmuxCID IE.
*/
private function f_vty_allow_osmux(boolean allow) runs on test_CT {
f_vty_enter_cfg_msc(BSCVTY, 0);
if (allow) {
f_vty_transceive(BSCVTY, "osmux on");
} else {
f_vty_transceive(BSCVTY, "osmux off");
}
f_vty_transceive(BSCVTY, "exit");
f_vty_transceive(BSCVTY, "exit");
g_osmux_enabled := allow;
}
function f_init_vty(charstring id := "foo") runs on test_CT {
if (BSCVTY.checkstate("Mapped")) {
/* skip initialization if already executed once */
return;
}
map(self:BSCVTY, system:BSCVTY);
f_vty_set_prompts(BSCVTY);
f_vty_transceive(BSCVTY, "enable");
f_cs7_inst_0_cfg(BSCVTY, {"sccp-timer ias " & int2str(g_bsc_sccp_timer_ias),
"sccp-timer iar " & int2str(g_bsc_sccp_timer_iar)});
}
private function f_logp(charstring log_msg) runs on MSC_ConnHdlr
{
// log on TTCN3 log output
log(log_msg);
// log in stderr log
f_vty_transceive(BSCVTY, "logp lglobal notice " & log_msg);
}
private function f_sysinfo_seen(integer rsl_idx, RSL_Message rsl) runs on test_CT
{
if (rsl_idx >= lengthof(g_system_information)) {
g_system_information[rsl_idx] := SystemInformationConfig_omit
}
f_sysinfo_dec_raw(g_system_information[rsl_idx], rsl);
}
altstep as_catch_RSL_sysinfo(integer rsl_idx) runs on test_CT {
var ASP_RSL_Unitdata rx_rsl_ud;
/* For handler_mode := false, receiving the RSL bootstrap messages directly on IPA_RSL */
[] IPA_RSL[rsl_idx].receive(tr_ASP_RSL_UD(tr_RSL_NO_BCCH_INFO)) -> value rx_rsl_ud {
f_sysinfo_seen(rsl_idx, rx_rsl_ud.rsl);
repeat;
}
[] IPA_RSL[rsl_idx].receive(tr_ASP_RSL_UD(tr_RSL_BCCH_INFO)) -> value rx_rsl_ud {
f_sysinfo_seen(rsl_idx, rx_rsl_ud.rsl);
repeat;
}
[] IPA_RSL[rsl_idx].receive(tr_ASP_RSL_UD(tr_RSL_NO_SACCH_FILL)) -> value rx_rsl_ud {
f_sysinfo_seen(rsl_idx, rx_rsl_ud.rsl);
repeat;
}
[] IPA_RSL[rsl_idx].receive(tr_ASP_RSL_UD(tr_RSL_SACCH_FILL)) -> value rx_rsl_ud {
f_sysinfo_seen(rsl_idx, rx_rsl_ud.rsl);
repeat;
}
/* For handler_mode := true, receiving the RSL bootstrap messages via RSL_Emulation */
[] RSL_CCHAN[rsl_idx].receive(tr_ASP_RSL_UD(tr_RSL_NO_BCCH_INFO)) -> value rx_rsl_ud {
f_sysinfo_seen(rsl_idx, rx_rsl_ud.rsl);
repeat;
}
[] RSL_CCHAN[rsl_idx].receive(tr_ASP_RSL_UD(tr_RSL_BCCH_INFO)) -> value rx_rsl_ud {
f_sysinfo_seen(rsl_idx, rx_rsl_ud.rsl);
repeat;
}
[] RSL_CCHAN[rsl_idx].receive(tr_ASP_RSL_UD(tr_RSL_NO_SACCH_FILL)) -> value rx_rsl_ud {
f_sysinfo_seen(rsl_idx, rx_rsl_ud.rsl);
repeat;
}
[] RSL_CCHAN[rsl_idx].receive(tr_ASP_RSL_UD(tr_RSL_SACCH_FILL)) -> value rx_rsl_ud {
f_sysinfo_seen(rsl_idx, rx_rsl_ud.rsl);
repeat;
}
}
/* TODO: use BooleanList from COMMON/src/General_Types.ttcn */
private type record of boolean my_BooleanList;
private function f_vty_msc_allow_attach(TELNETasp_PT pt, my_BooleanList allow_attach_list)
{
var charstring config := f_vty_transceive_ret(pt, "show running-config");
for (var integer msc_nr := 0; msc_nr < sizeof(allow_attach_list); msc_nr := msc_nr+1) {
if (f_strstr(config, "\nmsc " & int2str(msc_nr) & "\n") < 0) {
/* There is no 'msc N' for this msc_nr in the running config, so don't create an empty msc by
* stepping into that config node. */
log("msc ", msc_nr, " is not configured, skipping");
continue;
}
f_vty_enter_cfg_msc(pt, msc_nr);
if (allow_attach_list[msc_nr]) {
/* strict := false: ignore if osmo-bsc does not support this config option (latest build) */
f_vty_transceive(pt, "allow-attach", strict := false);
} else {
f_vty_transceive(pt, "no allow-attach", strict := false);
}
f_vty_transceive(pt, "exit");
f_vty_transceive(pt, "exit");
}
}
/* global initialization function
* \param nr_bts Number of BTSs we should start/bring up
* \param handler_mode Start an RSL_Emulation_CT component (true) or not (false).
* \param nr_msc Number of virtual MSCs to bring up to connect to osmo-bsc.
*/
function f_init(integer nr_bts := NUM_BTS, boolean handler_mode := false, boolean allow_osmux := false,
integer nr_msc := 1, float guard_timeout := 30.0) runs on test_CT {
var integer bssap_idx;
if (g_initialized) {
return;
}
g_initialized := true;
T_guard.start(guard_timeout);
activate(as_Tguard());
f_init_vty("VirtMSC");
if (mp_enable_osmux_test) {
f_vty_allow_osmux(allow_osmux);
}
var my_BooleanList allow_attach := { false, false, false };
f_init_statsd("VirtMSC", vc_STATSD, mp_test_ip, mp_bsc_statsd_port);
for (bssap_idx := 0; bssap_idx < nr_msc; bssap_idx := bssap_idx+1) {
allow_attach[bssap_idx] := true;
/* Call a function of our 'parent component' RAN_Adapter_CT to start the
* MSC-side BSSAP emulation */
if (handler_mode) {
var RanOps ranops := MSC_RanOps;
ranops.use_osmux := g_osmux_enabled;
f_ran_adapter_init(g_bssap[bssap_idx], mp_bssap_cfg[bssap_idx], "VirtMSC", ranops);
connect(self:SCCPLITE_IPA_CTRL, g_bssap[bssap_idx].vc_RAN:CTRL_CLIENT);
f_ran_adapter_start(g_bssap[bssap_idx]);
} else {
f_ran_adapter_init(g_bssap[bssap_idx], mp_bssap_cfg[bssap_idx], "VirtMSC", omit);
connect(self:BSSAP, g_bssap[bssap_idx].vc_SCCP:SCCP_SP_PORT);
f_ran_adapter_start(g_bssap[bssap_idx]);
f_legacy_bssap_reset();
}
}
/* start the test with exactly all enabled MSCs allowed to attach */
f_vty_msc_allow_attach(BSCVTY, allow_attach);
f_ipa_ctrl_start(mp_bsc_ip, mp_bsc_ctrl_port);
f_init_mgcp("VirtMSC");
for (var integer i := 0; i < nr_bts; i := i+1) {
f_init_bts(i, handler_mode);
}
}
function f_init_bts(integer bts_idx := 0, boolean handler_mode := false)
runs on test_CT {
/* wait until osmo-bts-omldummy has respawned */
f_wait_oml(bts_idx, "degraded", 5.0);
/* start RSL connection */
f_ipa_rsl_start(bts[bts_idx].rsl, mp_bsc_ip, mp_bsc_rsl_port, bts_idx, handler_mode);
/* wait until BSC tells us "connected" */
f_wait_oml(bts_idx, "connected", 5.0);
}
function f_init_bts_and_check_sysinfo(integer bts_idx := 0, boolean handler_mode := false,
template SystemInformationConfig expect_si)
runs on test_CT {
var default sysinfo := activate(as_catch_RSL_sysinfo(bts_idx));
f_init_bts(bts_idx, handler_mode);
/* Give some time to (hopefully/most likely) collect all system informations from RSL startup.
* We could stop as soon as all expected SI are received, but then we might miss SI that we don't expect and
* that might be sent afterwards. So rather give a generous timeout and be quite sure to catch all SI.
*/
f_sleep(5.0);
log("RSL ", bts_idx, " SYSTEM INFORMATION: ", g_system_information[bts_idx]);
deactivate(sysinfo);
if (match(g_system_information[bts_idx], expect_si)) {
setverdict(pass);
} else {
log("RSL ", bts_idx, ": EXPECTED SI: ", expect_si);
log("RSL ", bts_idx, ": GOT SI: ", g_system_information[bts_idx]);
setverdict(fail, "received SI does not match expectations");
return;
}
}
/* expect to receive a RSL message matching a specified template on a given BTS / stream */
function f_exp_ipa_rx(integer bts_nr, template RSL_Message t_rx, float t_secs := 2.0, IpaStreamId sid := IPAC_PROTO_RSL_TRX0)
runs on test_CT return RSL_Message {
var ASP_RSL_Unitdata rx_rsl_ud;
timer T := t_secs;
T.start;
alt {
[] IPA_RSL[bts_nr].receive(tr_ASP_RSL_UD(t_rx, sid)) -> value rx_rsl_ud {
T.stop;
}
[] IPA_RSL[bts_nr].receive { repeat; }
[] T.timeout {
setverdict(fail, "Timeout expecting ", t_rx);
mtc.stop;
}
}
return rx_rsl_ud.rsl;
}
/* helper function to transmit RSL on a given BTS/stream */
function f_ipa_tx(integer bts_nr, template RSL_Message t_tx, IpaStreamId sid := IPAC_PROTO_RSL_TRX0)
runs on test_CT {
IPA_RSL[bts_nr].send(ts_ASP_RSL_UD(t_tx, sid));
}
/* verify we get a CHAN_ACT after CHAN RQD */
testcase TC_chan_act_noreply() runs on test_CT {
var BSSAP_N_UNITDATA_ind ud_ind;
var RSL_Message rsl_unused;
f_init(1);
IPA_RSL[0].send(ts_ASP_RSL_UD(ts_RSL_CHAN_RQD('23'O, 23)));
rsl_unused := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_CHAN_ACTIV));
setverdict(pass);
}
/* verify if the "chreq:total" counter increments as expected */
testcase TC_chan_act_counter() runs on test_CT {
var BSSAP_N_UNITDATA_ind ud_ind;
var integer chreq_total;
var RSL_Message rsl_unused;
f_init(1);
chreq_total := f_ctrl_get_ratectr_abs(IPA_CTRL, "bts", 0, "chreq:total");
IPA_RSL[0].send(ts_ASP_RSL_UD(ts_RSL_CHAN_RQD('23'O, 23)));
rsl_unused := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_CHAN_ACTIV));
f_ctrl_get_exp_ratectr_abs(IPA_CTRL, "bts", 0, "chreq:total", chreq_total+1);
setverdict(pass);
}
/* CHAN RQD -> CHAN ACT -> CHAN ACT ACK -> RF CHAN REL */
private function f_TC_chan_act_ack_noest(OCT1 ra := '23'O) runs on test_CT {
var RSL_Message rx_rsl;
/* Send CHAN RQD and wait for allocation; acknowledge it */
var RslChannelNr chan_nr := f_chreq_act_ack(ra);
/* expect BSC to disable the channel again if there's no RLL EST IND */
rx_rsl := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_RF_CHAN_REL), T3101_MAX);
setverdict(pass);
}
/* Normal variant */
testcase TC_chan_act_ack_noest() runs on test_CT {
f_init(1);
f_TC_chan_act_ack_noest();
}
/* Emergency call variant */
testcase TC_chan_act_ack_noest_emerg() runs on test_CT {
/* See also: 3GPP TS 04.08, Table 9.9, ra=101xxxxx */
f_init(1);
f_vty_allow_emerg_bts(true, 0);
f_TC_chan_act_ack_noest(ra := 'A5'O);
}
/* Emergency call variant, but emergency calls are not allowed */
testcase TC_chan_rqd_emerg_deny() runs on test_CT {
/* See also: 3GPP TS 04.08, Table 9.9, ra=101xxxxx */
var RSL_Message rx_rsl;
var GsmRrMessage rr;
f_init(1);
f_vty_allow_emerg_bts(false, 0);
IPA_RSL[0].clear;
f_ipa_tx(0, ts_RSL_CHAN_RQD('A5'O, 23));
rx_rsl := f_exp_ipa_rx(0, tr_RSL_MsgTypeC(RSL_MT_IMMEDIATE_ASSIGN_CMD));
rr := dec_GsmRrMessage(rx_rsl.ies[1].body.full_imm_ass_info.payload);
if (rr.header.message_type == IMMEDIATE_ASSIGNMENT_REJECT) {
setverdict(pass);
} else {
setverdict(fail, "immediate assignment not rejected");
}
}
/* Test behavior if MSC never answers to CR */
testcase TC_chan_act_ack_est_ind_noreply() runs on test_CT {
var RslLinkId main_dcch := valueof(ts_RslLinkID_DCCH(0));
var IpaStreamId sid := IPAC_PROTO_RSL_TRX0;
var RSL_Message rx_rsl;
var ASP_RSL_Unitdata rx_rsl_ud;
f_init(1);
/* Send CHAN RQD and wait for allocation; acknowledge it */
var RslChannelNr chan_nr := f_chreq_act_ack();
var octetstring l3 := '00010203040506'O
f_ipa_tx(0, ts_RSL_EST_IND(chan_nr, valueof(ts_RslLinkID_DCCH(0)), l3));
BSSAP.receive(tr_BSSAP_CONNECT_ind(?, ?, tr_BSSMAP_ComplL3(l3)));
/* expect BSC to disable the channel again if there's no response from MSC */
/* MS waits 20s (T3210) at LU; 10s (T3230) at CM SERV REQ and 5s (T3220) AT detach */
f_expect_chan_rel(0, chan_nr, expect_rll_rel_req := false);
setverdict(pass);
}
/* Test behavior if MSC answers with CREF to CR */
testcase TC_chan_act_ack_est_ind_refused() runs on test_CT {
var BSSAP_N_CONNECT_ind rx_c_ind;
var RSL_Message rx_rsl;
f_init(1);
/* Send CHAN RQD and wait for allocation; acknowledge it */
var RslChannelNr chan_nr := f_chreq_act_ack();
var octetstring l3 := '00010203040506'O
f_ipa_tx(0, ts_RSL_EST_IND(chan_nr, valueof(ts_RslLinkID_DCCH(0)), l3));
BSSAP.receive(tr_BSSAP_CONNECT_ind(?, ?, tr_BSSMAP_ComplL3(l3))) -> value rx_c_ind;
BSSAP.send(ts_BSSAP_DISC_req(rx_c_ind.connectionId, 0));
/* expect BSC to disable the channel */
f_expect_chan_rel(0, chan_nr, expect_rll_rel_req := false);
setverdict(pass);
}
/* CHAN RQD -> CHAN ACT -> CHAN ACT NACK -> RF CHAN REL */
testcase TC_chan_act_nack() runs on test_CT {
var RSL_Message rx_rsl;
var integer chact_nack;
f_init(1);
chact_nack := f_ctrl_get_ratectr_abs(IPA_CTRL, "bts", 0, "chan_act:nack");
f_ipa_tx(0, ts_RSL_CHAN_RQD('33'O, 33));
rx_rsl := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_CHAN_ACTIV));
var RslChannelNr chan_nr := rx_rsl.ies[0].body.chan_nr;
f_ipa_tx(0, ts_RSL_CHAN_ACT_NACK(chan_nr, RSL_ERR_EQUIPMENT_FAIL));
/* wait for some time to hope the NACK arrives before the CTRL GET below */
f_sleep(0.5);
f_ctrl_get_exp_ratectr_abs(IPA_CTRL, "bts", 0, "chan_act:nack", chact_nack+1);
setverdict(pass);
}
/* Test for channel exhaustion due to RACH overload */
testcase TC_chan_exhaustion() runs on test_CT {
var ASP_RSL_Unitdata rsl_ud;
var integer i;
var integer chreq_total, chreq_nochan;
f_init(1);
chreq_total := f_ctrl_get_ratectr_abs(IPA_CTRL, "bts", 0, "chreq:total");
chreq_nochan := f_ctrl_get_ratectr_abs(IPA_CTRL, "bts", 0, "chreq:no_channel");
/* GSM 04.08 Table 9.9a:
* RA = '33'O -> Establishment cause = 0011xxxx (MS dual rate capable and asks for "TCH/H or TCH/F").
* With current setup, expect 4xSDCCH + 4xTCH/F + 1xTCH/H to succeed */
for (i := 0; i < NUM_TCHF_PER_BTS + NUM_TCHH_PER_BTS + NUM_SDCCH_PER_BTS; i := i+1) {
var RslChannelNr chan_nr := f_chreq_act_ack('33'O, i);
}
IPA_RSL[0].clear;
f_ctrl_get_exp_ratectr_abs(IPA_CTRL, "bts", 0, "chreq:total",
chreq_total + NUM_TCHF_PER_BTS + NUM_TCHH_PER_BTS + NUM_SDCCH_PER_BTS);
/* now expect additional channel activations to fail */
f_ipa_tx(0, ts_RSL_CHAN_RQD('42'O, 42));
alt {
[] IPA_RSL[0].receive(tr_ASP_RSL_UD(tr_RSL_MsgTypeD(RSL_MT_CHAN_ACTIV))) {
setverdict(fail, "Received CHAN ACT ACK without resources?!?");
}
[] IPA_RSL[0].receive(tr_ASP_RSL_UD(tr_RSL_IMM_ASSIGN(?))) -> value rsl_ud {
var GsmRrMessage rr;
/* match on IMM ASS REJ */
rr := dec_GsmRrMessage(rsl_ud.rsl.ies[1].body.full_imm_ass_info.payload);
if (rr.header.message_type == IMMEDIATE_ASSIGNMENT_REJECT) {
f_ctrl_get_exp_ratectr_abs(IPA_CTRL, "bts", 0, "chreq:total",
chreq_total + NUM_TCHF_PER_BTS + NUM_TCHH_PER_BTS + NUM_SDCCH_PER_BTS+1);
f_ctrl_get_exp_ratectr_abs(IPA_CTRL, "bts", 0, "chreq:no_channel",
chreq_nochan+1);
setverdict(pass);
} else {
repeat;
}
}
[] IPA_RSL[0].receive { repeat; }
}
}
/* Test channel deactivation due to silence from MS */
testcase TC_chan_deact_silence() runs on test_CT {
var RslChannelNr chan_nr;
f_init(1);
/* Request for a dedicated channel */
chan_nr := f_chreq_act_ack('23'O);
/* Wait some time until the channel is released */
f_sleep(2.0);
/* Expect CHANnel RELease */
alt {
[] IPA_RSL[0].receive(tr_ASP_RSL_UD(tr_RSL_MsgTypeD(RSL_MT_RF_CHAN_REL))) {
log("Received CHANnel RELease");
setverdict(pass);
}
[] IPA_RSL[0].receive(tr_ASP_RSL_UD(tr_RSL_IMM_ASSIGN(?))) {
/* See OS#3709, OsmoBSC should not send Immediate
* Assignment Reject since a dedicated channel was
* already allocated, and Immediate Assignment was
* already sent. */
setverdict(fail, "Unexpected Immediate Assignment!");
}
[] IPA_RSL[0].receive {
setverdict(fail, "Unexpected RSL message!");
}
}
}
/***********************************************************************
* Assignment Testing
***********************************************************************/
/* Verify that the BSC refuses any BSSAP connection from the MSC (They are all BSC->MSC direction,
* except for the inter-BSC handover, MT side) */
testcase TC_outbound_connect(integer bssap_idx := 0) runs on test_CT {
f_init(1);
BSSAP.send(ts_BSSAP_CONNECT_req(g_bssap[bssap_idx].sccp_addr_peer, g_bssap[bssap_idx].sccp_addr_own,
2342, ts_BSSMAP_AssignmentReq));
BSSAP.receive(tr_BSSAP_DISC_ind(2342, ?, ?));
setverdict(pass);
}
/* Test behavior if MSC answers with CREF to CR */
testcase TC_assignment_cic_only(integer bssap_idx := 0) runs on test_CT {
var BSSAP_N_CONNECT_ind rx_c_ind;
var RSL_Message rx_rsl;
var DchanTuple dt;
f_init(1);
dt := f_est_dchan('23'O, 23, '00000000'O);
if (mp_bssap_cfg[bssap_idx].transport == BSSAP_TRANSPORT_AoIP) {
/* send assignment without AoIP IEs */
BSSAP.send(ts_BSSAP_DATA_req(dt.sccp_conn_id, ts_BSSMAP_AssignmentReq(ts_BSSMAP_IE_CIC(0, 1))));
} else {
/* Send assignmetn without CIC in IPA case */
var BSSMAP_IE_AoIP_TransportLayerAddress tla :=
valueof(ts_BSSMAP_IE_AoIP_TLA4('01020304'O, 2342));
BSSAP.send(ts_BSSAP_DATA_req(dt.sccp_conn_id, ts_BSSMAP_AssignmentReq(omit, tla)));
}
alt {
[] BSSAP.receive(tr_BSSAP_DATA_ind(dt.sccp_conn_id, tr_BSSMAP_AssignmentComplete)) {
setverdict(fail, "AoIP BSC cannot accept ASSIGNMENT without AoIP Transport IE");
}
/* TODO: Actually expect GSM0808_CAUSE_REQ_A_IF_TYPE_NOT_SUPP */
[] BSSAP.receive(tr_BSSAP_DATA_ind(dt.sccp_conn_id, tr_BSSMAP_AssignmentFail)) {
setverdict(pass);
}
[] BSSAP.receive { repeat; }
}
}
/* generate an assignment request for either AoIP or SCCPlite */
function f_gen_ass_req(boolean osmux_enabled := false, integer bssap_idx := 0) return PDU_BSSAP {
var PDU_BSSAP ass_cmd;
var BSSMAP_IE_Osmo_OsmuxCID osmux_cid := valueof(ts_OsmuxCID(0));
if (mp_bssap_cfg[bssap_idx].transport == BSSAP_TRANSPORT_AoIP) {
var BSSMAP_IE_AoIP_TransportLayerAddress tla :=
valueof(ts_BSSMAP_IE_AoIP_TLA4('01020304'O, 2342));
if (osmux_enabled) {
ass_cmd := valueof(ts_BSSMAP_AssignmentReq(omit, tla, osmux_cid));
} else {
ass_cmd := valueof(ts_BSSMAP_AssignmentReq(omit, tla));
}
} else {
var BSSMAP_IE_CircuitIdentityCode cic := valueof(ts_BSSMAP_IE_CIC(0,1));
ass_cmd := valueof(ts_BSSMAP_AssignmentReq(cic, omit));
}
return ass_cmd;
}
function f_gen_handover_req(integer bssap_idx := 0) return PDU_BSSAP {
var PDU_BSSAP ho_req;
if (mp_bssap_cfg[bssap_idx].transport == BSSAP_TRANSPORT_AoIP) {
var BSSMAP_IE_AoIP_TransportLayerAddress tla :=
valueof(ts_BSSMAP_IE_AoIP_TLA4('01020304'O, 2342));
ho_req := valueof(ts_BSSMAP_HandoverRequest(omit, tla));
} else {
var BSSMAP_IE_CircuitIdentityCode cic := valueof(ts_BSSMAP_IE_CIC(0,1));
ho_req := valueof(ts_BSSMAP_HandoverRequest(cic, omit));
}
return ho_req;
}
/* generate an assignment complete template for either AoIP or SCCPlite */
function f_gen_exp_compl(boolean expect_osmux := false, integer bssap_idx := 0) return template PDU_BSSAP {
var template PDU_BSSAP exp_compl;
var BSSMAP_IE_Osmo_OsmuxCID osmux_cid := valueof(ts_OsmuxCID(0));
if (mp_bssap_cfg[bssap_idx].transport == BSSAP_TRANSPORT_AoIP) {
if (expect_osmux) {
exp_compl := tr_BSSMAP_AssignmentComplete(omit, ?, osmux_cid);
} else {
exp_compl := tr_BSSMAP_AssignmentComplete(omit, ?, omit);
}
} else {
/* CIC is optional "*" as the MSC allocated it */
exp_compl := tr_BSSMAP_AssignmentComplete(*, omit);
}
return exp_compl;
}
/* Run everything required up to sending a caller-specified assignment command and expect response */
function f_assignment_exp(PDU_BSSAP ass_cmd, template PDU_BSSAP exp, charstring fail_text)
runs on test_CT {
var BSSAP_N_CONNECT_ind rx_c_ind;
var RSL_Message rx_rsl;
var DchanTuple dt;
f_init(1);
dt := f_est_dchan('23'O, 23, '00000000'O);
/* send assignment without AoIP IEs */
BSSAP.send(ts_BSSAP_DATA_req(dt.sccp_conn_id, ass_cmd));
alt {
[] BSSAP.receive(tr_BSSAP_DATA_ind(dt.sccp_conn_id, tr_BSSMAP_AssignmentComplete)) {
if (ischosen(exp.pdu.bssmap.assignmentComplete)) {
setverdict(pass);
} else {
setverdict(fail, fail_text);
}
}
[] BSSAP.receive(tr_BSSAP_DATA_ind(dt.sccp_conn_id, tr_BSSMAP_AssignmentFail)) {
if (ischosen(exp.pdu.bssmap.assignmentFailure)) {
setverdict(pass);
} else {
setverdict(fail, fail_text);
}
}
[] BSSAP.receive { repeat; }
}
}
testcase TC_assignment_csd() runs on test_CT {
var template PDU_BSSAP exp_fail := tr_BSSMAP_AssignmentFail;
var PDU_BSSAP ass_cmd := f_gen_ass_req();
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelTypeCSD);
//exp_fail.pdu.bssmap.assignmentFailure.cause.causeValue := int2bit(enum2int(GSM0808_CAUSE_REQ_CODEC_TYPE_OR_CONFIG_UNAVAIL), 7);
f_assignment_exp(ass_cmd, exp_fail, "BSC accepted Assignment for CSD");
}
testcase TC_assignment_ctm() runs on test_CT {
var template PDU_BSSAP exp_fail := tr_BSSMAP_AssignmentFail;
var PDU_BSSAP ass_cmd := f_gen_ass_req();
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelTypeCTM);
//exp_fail.pdu.bssmap.assignmentFailure.cause.causeValue := int2bit(enum2int(GSM0808_CAUSE_REQ_CODEC_TYPE_OR_CONFIG_UNAVAIL), 7);
f_assignment_exp(ass_cmd, exp_fail, "BSC accepted Assignment for Speech+CTM");
}
type record DchanTuple {
integer sccp_conn_id,
RslChannelNr rsl_chan_nr
}
/* Send CHAN RQD and wait for allocation; acknowledge it */
private function f_chreq_act_ack(OCT1 ra := '23'O, GsmFrameNumber fn := 23)
runs on test_CT return RslChannelNr {
var RSL_Message rx_rsl;
f_ipa_tx(0, ts_RSL_CHAN_RQD(ra, fn));
rx_rsl := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_CHAN_ACTIV));
var RslChannelNr chan_nr := rx_rsl.ies[0].body.chan_nr;
f_ipa_tx(0, ts_RSL_CHAN_ACT_ACK(chan_nr, fn+10));
rx_rsl := f_exp_ipa_rx(0, tr_RSL_IMM_ASSIGN(0));
return chan_nr;
}
/* helper function to establish a dedicated channel via BTS and MSC */
function f_est_dchan(OCT1 ra, GsmFrameNumber fn, octetstring l3)
runs on test_CT return DchanTuple {
var BSSAP_N_CONNECT_ind rx_c_ind;
var DchanTuple dt;
/* Send CHAN RQD and wait for allocation; acknowledge it */
dt.rsl_chan_nr := f_chreq_act_ack(ra, fn);
f_ipa_tx(0, ts_RSL_EST_IND(dt.rsl_chan_nr, valueof(ts_RslLinkID_DCCH(0)), l3));
BSSAP.receive(tr_BSSAP_CONNECT_ind(?, ?, tr_BSSMAP_ComplL3(l3))) -> value rx_c_ind;
dt.sccp_conn_id := rx_c_ind.connectionId;
BSSAP.send(ts_BSSAP_CONNECT_res(dt.sccp_conn_id));
return dt;
}
/* expect RF CAN REL from BTS, acknowledge it and clear the MSC side */
private function f_exp_chan_rel_and_clear(DchanTuple dt, integer bts_nr := 0) runs on test_CT {
var RSL_Message rx_rsl;
/* expect BSC to disable the channel */
rx_rsl := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_RF_CHAN_REL), T3101_MAX);
/* respond with CHAN REL ACK */
f_ipa_tx(0, ts_RSL_RF_CHAN_REL_ACK(dt.rsl_chan_nr));
/* expect Clear Complete from BSC */
BSSAP.receive(tr_BSSAP_DATA_ind(dt.sccp_conn_id, tr_BSSMAP_ClearComplete));
/* MSC disconnects as instructed. */
BSSAP.send(ts_BSSAP_DISC_req(dt.sccp_conn_id, 0));
}
/* Test behavior of channel release after unilateral RLL REL IND (DISC from MS) */
testcase TC_chan_rel_rll_rel_ind() runs on test_CT {
var BSSAP_N_DATA_ind rx_di;
var DchanTuple dt;
f_init(1);
dt := f_est_dchan('23'O, 23, '00010203040506'O);
/* simulate RLL REL IND */
f_ipa_tx(0, ts_RSL_REL_IND(dt.rsl_chan_nr, valueof(ts_RslLinkID_DCCH(0))));
/* expect Clear Request on MSC side */
BSSAP.receive(tr_BSSAP_DATA_ind(dt.sccp_conn_id, tr_BSSMAP_ClearRequest)) -> value rx_di;
/* Instruct BSC to clear channel */
var BssmapCause cause := bit2int(rx_di.userData.pdu.bssmap.clearRequest.cause.causeValue);
BSSAP.send(ts_BSSAP_DATA_req(dt.sccp_conn_id, ts_BSSMAP_ClearCommand(cause)));
/* expect BSC to disable the channel */
f_exp_chan_rel_and_clear(dt, 0);
/* wait for SCCP emulation to do its job */
f_sleep(1.0);
setverdict(pass);
}
/* Test behavior of channel release after CONN FAIL IND from BTS */
testcase TC_chan_rel_conn_fail() runs on test_CT {
var BSSAP_N_DATA_ind rx_di;
var DchanTuple dt;
f_init(1);
dt := f_est_dchan('23'O, 23, '00010203040506'O);
/* simulate CONN FAIL IND */
f_ipa_tx(0, ts_RSL_CONN_FAIL_IND(dt.rsl_chan_nr, RSL_ERR_RADIO_LINK_FAIL));
/* TODO: different cause values? */
/* expect Clear Request from BSC */
BSSAP.receive(tr_BSSAP_DATA_ind(dt.sccp_conn_id, tr_BSSMAP_ClearRequest)) -> value rx_di;
/* Instruct BSC to clear channel */
var BssmapCause cause := bit2int(rx_di.userData.pdu.bssmap.clearRequest.cause.causeValue);
BSSAP.send(ts_BSSAP_DATA_req(dt.sccp_conn_id, ts_BSSMAP_ClearCommand(cause)));
/* expect BSC to disable the channel */
f_exp_chan_rel_and_clear(dt, 0);
/* wait for SCCP emulation to do its job */
f_sleep(1.0);
setverdict(pass);
}
/* Test behavior of early CONN FAIL IND from BTS (before EST IND!) */
/* See also https://www.osmocom.org/issues/3182 */
testcase TC_early_conn_fail() runs on test_CT {
var RSL_Message rx_rsl;
var DchanTuple dt;
f_init(1);
/* BTS->BSC: Send CHAN RQD and wait for allocation; acknowledge it */
dt.rsl_chan_nr := f_chreq_act_ack(f_rnd_octstring(1), 23);
/* BTS->BSC: simulate CONN FAIL IND */
f_ipa_tx(0, ts_RSL_CONN_FAIL_IND(dt.rsl_chan_nr, RSL_ERR_RADIO_LINK_FAIL));
/* BTS->BSC: Expect RF channel release from BSC on Abis */
rx_rsl := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_RF_CHAN_REL), 10.0);
/* BTS<-BSC: respond with CHAN REL ACK */
f_ipa_tx(0, ts_RSL_RF_CHAN_REL_ACK(dt.rsl_chan_nr));
setverdict(pass);
}
/* Test behavior of late CONN FAIL IND from BTS (ater REL IND!) */
/* See also https://www.osmocom.org/issues/3182 */
testcase TC_late_conn_fail() runs on test_CT {
var RSL_Message rx_rsl;
var DchanTuple dt;
f_init(1);
dt := f_est_dchan('23'O, 23, '00010203040506'O);
/* BSC<-MSC: Instruct BSC to clear connection */
BSSAP.send(ts_BSSAP_DATA_req(dt.sccp_conn_id, ts_BSSMAP_ClearCommand(0)));
/* BTS->BSC: expect BSC to deactivate SACCH */
rx_rsl := f_exp_ipa_rx(0, tr_RSL_DEACT_SACCH(dt.rsl_chan_nr));
/* BTS->BSC: simulate a late CONN FAIL IND from BTS */
f_ipa_tx(0, ts_RSL_CONN_FAIL_IND(dt.rsl_chan_nr, RSL_ERR_RADIO_LINK_FAIL));
/* BTS<-BSC: Expect RF channel release from BSC on Abis */
rx_rsl := f_exp_ipa_rx(0, tr_RSL_MsgTypeD(RSL_MT_RF_CHAN_REL), 10.0);
/* BTS->BSC: respond with CHAN REL ACK */
f_ipa_tx(0, ts_RSL_RF_CHAN_REL_ACK(dt.rsl_chan_nr));
/* BSC->MSC: expect Clear Complete from BSC */
BSSAP.receive(tr_BSSAP_DATA_ind(dt.sccp_conn_id, tr_BSSMAP_ClearComplete));
/* BSC<-MSC: MSC disconnects as requested. */
BSSAP.send(ts_BSSAP_DISC_req(dt.sccp_conn_id, 0));
setverdict(pass);
}
function f_expect_chan_rel(integer bts_nr, RslChannelNr rsl_chan_nr,
boolean expect_deact_sacch := true,
boolean expect_rr_chan_rel := true,
boolean expect_rll_rel_req := true,
boolean handle_rll_rel := true,
boolean is_csfb := false,
template CellSelIndValue csfb_expect_cells := omit,
template RR_Cause expect_rr_cause := ?
) runs on test_CT {
var RslLinkId main_dcch := valueof(ts_RslLinkID_DCCH(0));
var boolean got_deact_sacch := false;
var boolean got_rr_chan_rel := false;
var boolean got_rll_rel_req := false;
var ASP_RSL_Unitdata ud;
var RSL_IE_Body l3_ie;
var PDU_ML3_NW_MS l3;
var RR_Cause got_cause;
log("f_expect_chan_rel() expecting: expect_deact_sacch=", expect_deact_sacch, " expect_rr_chan_rel=", expect_rr_chan_rel,
" expect_rll_rel_req=", expect_rll_rel_req);
alt {
[] IPA_RSL[bts_nr].receive(tr_ASP_RSL_UD(tr_RSL_DEACT_SACCH(rsl_chan_nr))) {
got_deact_sacch := true;
repeat;
}
[is_csfb] IPA_RSL[bts_nr].receive(tr_ASP_RSL_UD(tr_RSL_DATA_REQ(rsl_chan_nr, ?, decmatch tr_RRM_RR_RELEASE_CSFB))) -> value ud {
got_rr_chan_rel := true;
if (f_rsl_find_ie(ud.rsl, RSL_IE_L3_INFO, l3_ie) == false) {
setverdict(fail, "cannot find L3");
mtc.stop;
}
l3 := dec_PDU_ML3_NW_MS(l3_ie.l3_info.payload);
if (not istemplatekind(csfb_expect_cells, "omit")) {
var CellSelIndValue cells := dec_CellSelIndValue(
l3.msgs.rrm.channelRelease.cellSelectionIndicator.cellSelectionIndicatorValue);
log("GOT RR CHANNEL RELEASE CSFB CELLS: ", cells);
if (match(cells, csfb_expect_cells)) {
setverdict(pass);
} else {
log("EXPECTED CSFB CELLS: ", csfb_expect_cells);
setverdict(fail, "Received CSFB cells list on RR Channel Release does not match expectations");
}
}
if (not istemplatekind(expect_rr_cause, "omit")) {
int2enum(oct2int(l3.msgs.rrm.channelRelease.rRCause.valuePart), got_cause);
log("GOT CAUSE CODE: ", l3.msgs.rrm.channelRelease.rRCause.valuePart, " = ", got_cause);
if (match(got_cause, expect_rr_cause)) {
setverdict(pass);
} else {
log("EXPECTED CAUSE CODE: ", expect_rr_cause);
setverdict(fail, "Received RR Channel Release Cause code does not match expectations");
}
}
repeat;
}
[not is_csfb] IPA_RSL[bts_nr].receive(tr_ASP_RSL_UD(tr_RSL_DATA_REQ(rsl_chan_nr, ?, decmatch tr_RRM_RR_RELEASE))) -> value ud {
got_rr_chan_rel := true;
if (not istemplatekind(expect_rr_cause, "omit")) {
if (f_rsl_find_ie(ud.rsl, RSL_IE_L3_INFO, l3_ie) == false) {
setverdict(fail, "cannot find L3");
mtc.stop;
}
l3 := dec_PDU_ML3_NW_MS(l3_ie.l3_info.payload);
int2enum(oct2int(l3.msgs.rrm.channelRelease.rRCause.valuePart), got_cause);
log("GOT CAUSE CODE: ", l3.msgs.rrm.channelRelease.rRCause.valuePart, " = ", got_cause);
if (match(got_cause, expect_rr_cause)) {
setverdict(pass);
} else {
log("EXPECTED CAUSE CODE: ", expect_rr_cause);
setverdict(fail, "Received RR Channel Release Cause code does not match expectations");
}
}
repeat;
}
[] IPA_RSL[bts_nr].receive(tr_ASP_RSL_UD(tr_RSL_REL_REQ(rsl_chan_nr, ?))) {
got_rll_rel_req := true;
/* FIXME: Why are we getting this for LinkID SACCH? */
if (handle_rll_rel) {
f_ipa_tx(0, ts_RSL_REL_CONF(rsl_chan_nr, main_dcch));
}
repeat;
}
[] IPA_RSL[bts_nr].receive(tr_ASP_RSL_UD(tr_RSL_MsgTypeD(RSL_MT_RF_CHAN_REL))) {
/* respond with CHAN REL ACK */
f_ipa_tx(0, ts_RSL_RF_CHAN_REL_ACK(rsl_chan_nr));
}
/* ignore any user data */
[] IPA_RSL[bts_nr].receive(tr_ASP_RSL_UD(tr_RSL_MsgTypeR(?))) {
repeat;
}
}
log("f_expect_chan_rel() summary: got_deact_sacch=", got_deact_sacch, " got_rr_chan_rel=", got_rr_chan_rel,
" got_rll_rel_req=", got_rll_rel_req);
if (expect_deact_sacch != got_deact_sacch) {
setverdict(fail, "f_expect_chan_rel(): expect_deact_sacch=", expect_deact_sacch, " got_deact_sacch=", got_deact_sacch);
}
if (expect_rr_chan_rel != got_rr_chan_rel) {
setverdict(fail, "f_expect_chan_rel(): expect_rr_chan_rel=", expect_rr_chan_rel, " got_rr_chan_rel=", got_rr_chan_rel);
}
if (expect_rll_rel_req != got_rll_rel_req) {
setverdict(fail, "f_expect_chan_rel(): expect_rll_rel_req=", expect_rll_rel_req, " got_rll_rel_req=", got_rll_rel_req);
}
}
/* Test behavior of channel release after hard Clear Command from MSC */
testcase TC_chan_rel_hard_clear() runs on test_CT {
var BSSAP_N_DATA_ind rx_di;
var DchanTuple dt;
f_init(1);
dt := f_est_dchan('23'O, 23, '00010203040506'O);
/* Instruct BSC to clear channel */
var BssmapCause cause := 0;
BSSAP.send(ts_BSSAP_DATA_req(dt.sccp_conn_id, ts_BSSMAP_ClearCommand(cause)));
/* expect Clear Complete from BSC on A */
BSSAP.receive(tr_BSSAP_DATA_ind(dt.sccp_conn_id, tr_BSSMAP_ClearComplete)) {
/* release the SCCP connection */
BSSAP.send(ts_BSSAP_DISC_req(dt.sccp_conn_id, 0));
}
f_expect_chan_rel(0, dt.rsl_chan_nr, expect_rll_rel_req := false);
setverdict(pass);
}
/* Test behavior of channel release after Clear Command with CSFB indicator from MSC */
testcase TC_chan_rel_hard_clear_csfb() runs on test_CT {
var BSSAP_N_DATA_ind rx_di;
var DchanTuple dt;
f_init(1);
dt := f_est_dchan('23'O, 23, '00010203040506'O);
/* Instruct BSC to clear channel */
var BssmapCause cause := 0;
BSSAP.send(ts_BSSAP_DATA_req(dt.sccp_conn_id, ts_BSSMAP_ClearCommandCSFB(cause)));
/* expect Clear Complete from BSC on A */
BSSAP.receive(tr_BSSAP_DATA_ind(dt.sccp_conn_id, tr_BSSMAP_ClearComplete)) {
/* release the SCCP connection */
BSSAP.send(ts_BSSAP_DISC_req(dt.sccp_conn_id, 0));
}
f_expect_chan_rel(0, dt.rsl_chan_nr, expect_rll_rel_req := false, is_csfb := true);
setverdict(pass);
}
/* Test behavior of channel release after hard RLSD from MSC */
testcase TC_chan_rel_hard_rlsd() runs on test_CT {
var DchanTuple dt;
f_init(1);
dt := f_est_dchan('23'O, 23, '00010203040506'O);
/* release the SCCP connection */
BSSAP.send(ts_BSSAP_DISC_req(dt.sccp_conn_id, 0));
f_expect_chan_rel(0, dt.rsl_chan_nr, expect_rll_rel_req := false);
setverdict(pass);
}
/* Test behavior of channel release after hard RLSD from MSC and MS is not responding to RLL REL REQ */
testcase TC_chan_rel_hard_rlsd_ms_dead() runs on test_CT {
var DchanTuple dt;
f_init(1);
dt := f_est_dchan('23'O, 23, '00010203040506'O);
/* release the SCCP connection */
BSSAP.send(ts_BSSAP_DISC_req(dt.sccp_conn_id, 0));
f_expect_chan_rel(0, dt.rsl_chan_nr, expect_rll_rel_req := false);
setverdict(pass);
}
/* Test behavior of channel release after BSSMAP RESET from MSC */
testcase TC_chan_rel_a_reset() runs on test_CT {
var DchanTuple dt;
f_init(1);
dt := f_est_dchan('23'O, 23, '00010203040506'O);
/* Clear the queue, it might still contain stuff like IMMEDIATE ASSIGN */
IPA_RSL[0].clear;
/* perform BSSAP RESET, expect RESET ACK and DISC.ind on connection */
BSSAP.send(ts_BSSAP_UNITDATA_req(g_bssap[0].sccp_addr_peer, g_bssap[0].sccp_addr_own, ts_BSSMAP_Reset(0, g_osmux_enabled)));
interleave {
[] BSSAP.receive(tr_BSSAP_UNITDATA_ind(g_bssap[0].sccp_addr_own, g_bssap[0].sccp_addr_peer, tr_BSSMAP_ResetAck(g_osmux_enabled))) { }
[] BSSAP.receive(tr_BSSAP_DISC_ind(dt.sccp_conn_id, ?, ?)) { }
}
f_expect_chan_rel(0, dt.rsl_chan_nr, expect_rll_rel_req := false);
setverdict(pass);
}
/* Verify T(iar) triggers and releases the channel */
testcase TC_chan_rel_sccp_tiar_timeout() runs on test_CT {
var DchanTuple dt;
/* Set T(iar) in BSC low enough that it will trigger before other side
has time to keep alive with a T(ias). Keep recommended ratio of
T(iar) >= T(ias)*2 */
g_bsc_sccp_timer_ias := 2;
g_bsc_sccp_timer_iar := 5;
f_init(1);
dt := f_est_dchan('23'O, 23, '00010203040506'O);
f_expect_chan_rel(0, dt.rsl_chan_nr, expect_rll_rel_req := false);
setverdict(pass);
}
private function f_tc_chan_rel_rr_cause(myBSSMAP_Cause clear_cmd_cause, template RR_Cause expect_rr_cause)
runs on test_CT
{
var DchanTuple dt;
dt := f_est_dchan('23'O, 23, '00010203040506'O);
var BssmapCause cause := 0;
BSSAP.send(ts_BSSAP_DATA_req(dt.sccp_conn_id, ts_BSSMAP_ClearCommand(enum2int(clear_cmd_cause))));
BSSAP.receive(tr_BSSAP_DATA_ind(dt.sccp_conn_id, tr_BSSMAP_ClearComplete)) {
BSSAP.send(ts_BSSAP_DISC_req(dt.sccp_conn_id, 0));
}
f_expect_chan_rel(0, dt.rsl_chan_nr, expect_rll_rel_req := false, expect_rr_cause := expect_rr_cause);
setverdict(pass);
}
/* Test that Clear Command cause codes affect the RR Channel Release cause code */
testcase TC_chan_rel_rr_cause() runs on test_CT {
f_init(1);
f_tc_chan_rel_rr_cause(GSM0808_CAUSE_CALL_CONTROL, GSM48_RR_CAUSE_NORMAL);
f_tc_chan_rel_rr_cause(GSM0808_CAUSE_HANDOVER_SUCCESSFUL, GSM48_RR_CAUSE_NORMAL);
f_tc_chan_rel_rr_cause(GSM0808_CAUSE_PREEMPTION, GSM48_RR_CAUSE_PREMPTIVE_REL);
f_tc_chan_rel_rr_cause(GSM0808_CAUSE_RADIO_INTERFACE_MESSAGE_FAILURE, GSM48_RR_CAUSE_PROT_ERROR_UNSPC);
f_tc_chan_rel_rr_cause(GSM0808_CAUSE_RADIO_INTERFACE_FAILURE, GSM48_RR_CAUSE_ABNORMAL_UNSPEC);
f_tc_chan_rel_rr_cause(GSM0808_CAUSE_EQUIPMENT_FAILURE, GSM48_RR_CAUSE_ABNORMAL_UNSPEC);
}
/* Test behavior if RSL EST IND for non-active channel */
testcase TC_rll_est_ind_inact_lchan() runs on test_CT {
timer T := 2.0;
f_init(1);
var octetstring l3 := '00010203040506'O;
var RslChannelNr chan_nr := valueof(t_RslChanNr_Bm(6));
f_ipa_tx(0, ts_RSL_EST_IND(chan_nr, valueof(ts_RslLinkID_DCCH(0)), l3));
T.start;
alt {
[] BSSAP.receive(tr_BSSAP_CONNECT_ind(?, ?, tr_BSSMAP_ComplL3(l3))) {
setverdict(fail, "MSC received COMPL L3 for non-active lchan");
}
[] BSSAP.receive {}
[] IPA_RSL[0].receive {}
[] T.timeout {}
}
setverdict(pass);
}
/* Test behavior if RSL EST IND for invalid SAPI */
testcase TC_rll_est_ind_inval_sapi1() runs on test_CT {
var RslChannelNr chan_nr;
f_init(1);
chan_nr := f_chreq_act_ack()
var octetstring l3 := '00010203040506'O;
f_ipa_tx(0, ts_RSL_EST_IND(chan_nr, valueof(ts_RslLinkID_DCCH(1)), l3));
timer T := 2.0;
T.start;
alt {
[] BSSAP.receive(tr_BSSAP_CONNECT_ind(?, ?, tr_BSSMAP_ComplL3(l3))) {
setverdict(fail, "MSC received COMPL L3 for invalid SAPI 1");
}
[] BSSAP.receive { repeat; }
[] IPA_RSL[0].receive { repeat; }
[] T.timeout {}
}
setverdict(pass);
}
/* Test behavior if RSL EST IND for invalid SAPI */
testcase TC_rll_est_ind_inval_sapi3() runs on test_CT {
timer T := 2.0;
f_init(1);
var RslChannelNr chan_nr := f_chreq_act_ack();
var octetstring l3 := '00010203040506'O;
f_ipa_tx(0, ts_RSL_EST_IND(chan_nr, valueof(ts_RslLinkID_DCCH(3)), l3));
T.start;
alt {
[] BSSAP.receive(tr_BSSAP_CONNECT_ind(?, ?, tr_BSSMAP_ComplL3(l3))) {
setverdict(fail, "MSC received COMPL L3 for invalid SAPI 3");
}
[] BSSAP.receive { repeat; }
[] IPA_RSL[0].receive { repeat; }
[] T.timeout {}
}
setverdict(pass);
}
/* Test behavior if RSL EST IND for invalid SACCH */
testcase TC_rll_est_ind_inval_sacch() runs on test_CT {
timer T := 2.0;
f_init(1);
var RslChannelNr chan_nr := f_chreq_act_ack();
var octetstring l3 := '00010203040506'O;
f_ipa_tx(0, ts_RSL_EST_IND(chan_nr, valueof(ts_RslLinkID_SACCH(0)), l3));
T.start;
alt {
[] BSSAP.receive(tr_BSSAP_CONNECT_ind(?, ?, tr_BSSMAP_ComplL3(l3))) {
setverdict(fail, "MSC received COMPL L3 for invalid Link SACCH");
}
[] BSSAP.receive { repeat; }
[] IPA_RSL[0].receive { repeat; }
[] T.timeout {}
}
setverdict(pass);
}
testcase TC_si_default() runs on test_CT {
f_init(0);
f_init_bts_and_check_sysinfo(0, expect_si := SystemInformationConfig_default);
}
/* We're testing SI2quater with lists of EARFCNs. Instead of just incrementing EARFCNs, also pick some from the edges of
* the entire value range. This function provides the same EARFCN numbers for the same earfcn_index */
private function f_test_si2quater_earfcn_by_idx(integer earfcn_index) return uint16_t
{
select (earfcn_index) {
case (0) {
/* E-ARFCN 111 is already added in the osmo-bsc.cfg */
return 111;
}
case (1) {
return 1;
}
case (2) {
return 0;
}
case (3) {
return 65535;
}
case else {
return 23 * (earfcn_index - 3);
}
}
}
function f_test_si2quater(integer total_earfcns, template SystemInformationConfig expect_si,
template CellSelIndValue expect_cells := omit) runs on test_CT {
f_init(0);
/* E-ARFCN 111 is already added in the osmo-bsc.cfg, so only add more arfcns if total_earfcns > 1 */
for (var integer i := 1; i < total_earfcns; i := i + 1) {
f_bts_0_cfg(BSCVTY, {"si2quater neighbor-list add earfcn " & int2str(f_test_si2quater_earfcn_by_idx(i))
& " thresh-hi 20 thresh-lo 10 prio 3 qrxlv 22 meas 3"});
}
f_init_bts_and_check_sysinfo(0, expect_si := expect_si);
f_init(1);
if (not istemplatekind(expect_cells, "omit")) {
/* Also check that RR Channel Release contains these EARFCNs.
* (copied code from TC_chan_rel_hard_clear_csfb) */
var BSSAP_N_DATA_ind rx_di;
var DchanTuple dt;
dt := f_est_dchan('23'O, 23, '00010203040506'O);
/* Instruct BSC to clear channel */
var BssmapCause cause := 0;
BSSAP.send(ts_BSSAP_DATA_req(dt.sccp_conn_id, ts_BSSMAP_ClearCommandCSFB(cause)));
/* expect Clear Complete from BSC on A */
BSSAP.receive(tr_BSSAP_DATA_ind(dt.sccp_conn_id, tr_BSSMAP_ClearComplete)) {
/* release the SCCP connection */
BSSAP.send(ts_BSSAP_DISC_req(dt.sccp_conn_id, 0));
}
f_expect_chan_rel(0, dt.rsl_chan_nr, expect_rll_rel_req := false, is_csfb := true,
csfb_expect_cells := expect_cells);
}
for (var integer i := 1; i < total_earfcns; i := i + 1) {
f_bts_0_cfg(BSCVTY, {"si2quater neighbor-list del earfcn " & int2str(f_test_si2quater_earfcn_by_idx(i))});
}
}
private function f_tr_si2quater_earfcns(integer count) return template SI2quaterRestOctetsList
{
var template SI2quaterRestOctetsList si2quater := {};
var integer si2quater_count := (count + 2) / 3;
for (var integer i := 0; i < count; i := i + 1) {
var integer earfcn := f_test_si2quater_earfcn_by_idx(i);
var integer index := i / 3;
var integer earfcn_index := i mod 3;
if (index >= lengthof(si2quater)) {
si2quater[index] := tr_SI2quaterRestOctets_EUTRAN(index := index, count := si2quater_count - 1);
}
si2quater[index].rel_additions.rel5.rel6.rel7.rel8.prio_eutran_params_desc.desc.eutran_params_desc.desc.repeated_neigh_cells[0].cell_desc_list[earfcn_index] := tr_EUTRAN_CellDesc_default(e_arfcn := earfcn);
}
return si2quater;
}
private function f_tr_rr_chan_rel_earfcns(integer count) return template CellSelIndValue
{
var template CellSelIndValue_EUTRAN_Descrs cells := {};
for (var integer i := 0; i < count; i := i + 1) {
var integer earfcn := f_test_si2quater_earfcn_by_idx(i);
cells[i] := tr_CellSelIndValue_EUTRAN_Descr(earfcn, meas_bw_presence := '0'B, meas_bw := omit);
}
return tr_CellSelIndValue_EUTRAN(cells);
}
private function f_tc_si2quater_n_earfcns(integer n) runs on test_CT
{
var template SystemInformationConfig sic := SystemInformationConfig_default;
sic.si2quater := f_tr_si2quater_earfcns(n);
var template CellSelIndValue cells := f_tr_rr_chan_rel_earfcns(n);
f_test_si2quater(n, sic, cells);
}
testcase TC_si2quater_2_earfcns() runs on test_CT {
f_tc_si2quater_n_earfcns(2);
}
testcase TC_si2quater_3_earfcns() runs on test_CT {
f_tc_si2quater_n_earfcns(3);
}
testcase TC_si2quater_4_earfcns() runs on test_CT {
f_tc_si2quater_n_earfcns(4);
}
testcase TC_si2quater_5_earfcns() runs on test_CT {
f_tc_si2quater_n_earfcns(5);
}
testcase TC_si2quater_6_earfcns() runs on test_CT {
f_tc_si2quater_n_earfcns(6);
}
testcase TC_si2quater_12_earfcns() runs on test_CT {
f_tc_si2quater_n_earfcns(12);
}
testcase TC_si2quater_23_earfcns() runs on test_CT {
f_tc_si2quater_n_earfcns(23);
}
testcase TC_si2quater_32_earfcns() runs on test_CT {
f_tc_si2quater_n_earfcns(32);
}
testcase TC_si2quater_33_earfcns() runs on test_CT {
f_tc_si2quater_n_earfcns(33);
}
testcase TC_si2quater_42_earfcns() runs on test_CT {
f_tc_si2quater_n_earfcns(42);
}
testcase TC_si2quater_48_earfcns() runs on test_CT {
f_tc_si2quater_n_earfcns(48);
}
/* verify the VTY error response when adding too many EARFCNs, and showing that osmo-bsc still sends 16 SI2quater with
* 48 EARFCNs. */
testcase TC_si2quater_49_earfcns() runs on test_CT {
var template SystemInformationConfig sic := SystemInformationConfig_default;
sic.si2quater := f_tr_si2quater_earfcns(48); /* 48, not 49! */
f_init(0);
for (var integer i := 1; i < 48; i := i + 1) {
f_bts_0_cfg(BSCVTY, {"si2quater neighbor-list add earfcn " & int2str(f_test_si2quater_earfcn_by_idx(i))
& " thresh-hi 20 thresh-lo 10 prio 3 qrxlv 22 meas 3"});
}
/* The 49th EARFCN no longer fits, expect VTY error */
f_vty_enter_cfg_bts(BSCVTY, 0);
var charstring vty_error;
vty_error := f_vty_transceive_ret(BSCVTY,
"si2quater neighbor-list add earfcn 70 thresh-hi 20 thresh-lo 10 prio 3 qrxlv 22 meas 3")
f_vty_transceive(BSCVTY, "end");
if (f_strstr(vty_error, "Unable to add ARFCN 70") >= 0) {
log("Got expected VTY error: ", vty_error);
setverdict(pass);
} else {
setverdict(fail, "Expected the 49th EUTRAN ARFCN to be rejected by vty config, got: ", vty_error);
}
f_init_bts_and_check_sysinfo(0, expect_si := sic);
for (var integer i := 1; i < 48; i := i + 1) {
f_bts_0_cfg(BSCVTY, {"si2quater neighbor-list del earfcn " & int2str(f_test_si2quater_earfcn_by_idx(i))});
}
}
private function f_acc09_count_allowed(AccessControlClass acc) return uint8_t
{
var uint8_t count := 0;
for (var integer i := 5; i < 16; i := i + 1) {
if (acc[i] == '0'B) { /* the list marks barred, we count allowed */
count := count + 1;
}
}
return count;
}
private function f_recv_next_si1(integer rsl_idx := 0) runs on test_CT return SystemInformationType1
{
var ASP_RSL_Unitdata rx_rsl_ud;
var SystemInformationType1 last_si1;
timer T := 30.0;
T.start;
alt {
[] IPA_RSL[rsl_idx].receive(tr_ASP_RSL_UD((tr_RSL_NO_BCCH_INFO,
tr_RSL_BCCH_INFO,
tr_RSL_NO_SACCH_FILL,
tr_RSL_SACCH_FILL))
) -> value rx_rsl_ud {
f_sysinfo_seen(rsl_idx, rx_rsl_ud.rsl);
if (g_system_information[rsl_idx].si1 == omit) {
repeat;
}
last_si1 := g_system_information[rsl_idx].si1;
g_system_information[rsl_idx].si1 := omit;
T.stop;
}
[] T.timeout { setverdict(fail, "Timeout receiving next SI1"); }
}
return last_si1;
}
/* verify ACC rotate feature */
testcase TC_si_acc_rotate() runs on test_CT {
var template SystemInformationConfig sic := SystemInformationConfig_default;
var SystemInformationType1 last_si1;
var AccessControlClass acc;
var uint8_t count;
var integer times_allowed[10] := { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
f_init(0, guard_timeout := 60.0);
f_bts_0_cfg(BSCVTY, {"rach access-control-class 5 barred",
"access-control-class-rotate 3",
"access-control-class-rotate-quantum 1"});
/* Init and get first sysinfo */
f_init_bts_and_check_sysinfo(0, expect_si := ?);
for (var integer i:= 0; i < 20; i := i + 1) {
last_si1 := f_recv_next_si1(0);
acc := last_si1.rach_control.acc;
count := f_acc09_count_allowed(acc);
log("RSL: GOT SI1 ACC len=", count, ": ", acc);
if (count != 3) {
log("RSL: EXPECTED SI ACC len=3");
setverdict(fail, "received SI does not match expectations");
break;
}
for (var integer j := 0; j < 10; j := j + 1) {
if (acc[16 - 1 - j] == '0'B) { /* the list marks barred, we count allowed */
times_allowed[j] := times_allowed[j] + 1;
}
}
}
for (var integer j := 0; j < 10; j := j + 1) {
log("ACC", j, " allowed ", times_allowed[j], " times" );
if (j != 5 and times_allowed[j] < 3) {
setverdict(fail, "ACC", j, " ERROR: allowed ", times_allowed[j], " < 1 times");
} else if (j == 5 and times_allowed[j] > 0) {
setverdict(fail, "ACC", j, " ERROR: allowed ", times_allowed[j], " > 0 times");
}
}
f_bts_0_cfg(BSCVTY, {"access-control-class-rotate 10",
"rach access-control-class 5 allowed"});
}
/* verify ACC startup ramp+rotate feature */
testcase TC_si_acc_ramp_rotate() runs on test_CT {
var template SystemInformationConfig sic := SystemInformationConfig_default;
var SystemInformationType1 last_si1;
var AccessControlClass acc;
var ASP_RSL_Unitdata rx_rsl_ud;
var uint8_t count;
var uint8_t prev_count;
var integer times_allowed[10] := { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
f_init(0, guard_timeout := 80.0);
f_bts_0_cfg(BSCVTY, {"rach access-control-class 4 barred",
"access-control-class-rotate 0",
"access-control-class-rotate-quantum 1",
"access-control-class-ramping",
"access-control-class-ramping-step-interval 5",
"access-control-class-ramping-step-size 5"});
/* Init and get first sysinfo */
f_init_bts_and_check_sysinfo(0, expect_si := ?);
last_si1 := g_system_information[0].si1;
acc := last_si1.rach_control.acc;
count := f_acc09_count_allowed(acc);
/* Adm subset size was set to 0 above, so wait until all ACC are barred */
while (count > 0) {
last_si1 := f_recv_next_si1(0);
acc := last_si1.rach_control.acc;
count := f_acc09_count_allowed(acc);
log("RSL: wait len()=0: GOT SI1 ACC len=", count, ": ", acc);
}
/* Increase adm subset size, we should see ramping start up */
f_bts_0_cfg(BSCVTY, {"access-control-class-rotate 10"});
prev_count := 0;
while (true) {
last_si1 := f_recv_next_si1(0);
acc := last_si1.rach_control.acc;
count := f_acc09_count_allowed(acc);
log("RSL: GOT SI1 ACC len=", count, ": ", acc);
if (prev_count > count) {
setverdict(fail, "ACC allowed count dropped while expecting grow: ", prev_count, " -> ", count);
break;
}
if (count == 9) {
break; /* Maximum reached (10 - 1 perm barred), done here */
}
prev_count := count;
}
setverdict(pass);
f_bts_0_cfg(BSCVTY, {"access-control-class-rotate 10",
"rach access-control-class 4 allowed",
"no access-control-class-ramping"});
}
testcase TC_ctrl_msc_connection_status() runs on test_CT {
var charstring ctrl_resp;
f_init(1);
/* See https://osmocom.org/issues/2729 */
f_ctrl_get_exp(IPA_CTRL, "msc_connection_status", "connected");
setverdict(pass);
}
testcase TC_ctrl_msc0_connection_status() runs on test_CT {
var charstring ctrl_resp;
f_init(1);
f_ctrl_get_exp(IPA_CTRL, "msc.0.connection_status", "connected");
setverdict(pass);
}
testcase TC_ctrl() runs on test_CT {
var charstring ctrl_resp;
f_init(1);
/* all below values must match the osmo-bsc.cfg config file used */
f_ctrl_get_exp(IPA_CTRL, "mcc", "001");
f_ctrl_get_exp(IPA_CTRL, "mnc", "01");
f_ctrl_get_exp(IPA_CTRL, "number-of-bts", "4");
var integer bts_nr := 0;
f_ctrl_get_exp_bts(IPA_CTRL, bts_nr, "location-area-code", "1");
f_ctrl_get_exp_bts(IPA_CTRL, bts_nr, "cell-identity", "0");
f_ctrl_get_exp_bts(IPA_CTRL, bts_nr, "oml-connection-state", "connected");
f_ctrl_get_exp_bts(IPA_CTRL, bts_nr, "gprs-mode", "gprs");
f_ctrl_get_exp_bts(IPA_CTRL, bts_nr, "rf_state", "operational,unlocked,on");
f_ctrl_get_exp_trx(IPA_CTRL, bts_nr, 0, "arfcn", "871");
f_ctrl_get_exp_trx(IPA_CTRL, bts_nr, 0, "max-power-reduction", "20");
var integer uptime := str2int(f_ctrl_get_bts(IPA_CTRL, bts_nr, "oml-uptime"));
f_sleep(2.0);
if (str2int(f_ctrl_get_bts(IPA_CTRL, bts_nr, "oml-uptime")) < uptime+1) {
setverdict(fail, "oml-uptime not incrementing as expected");
}
/* TODO: Disconnect RSL, imply that OML is disconnected and check for uptime zero? */
f_ctrl_get_exp_ratectr_abs(IPA_CTRL, "bsc", 0, "paging:attempted", 0);
setverdict(pass);
}
/* Verify that Upon receival of SET "location", BSC forwards a TRAP
"location-state" over the SCCPlite IPA conn */
testcase TC_ctrl_location() runs on test_CT {
var MSC_ConnHdlr vc_conn;
var integer bts_nr := 0;
f_init(1, true);
f_sleep(1.0);
f_ctrl_set_bts(IPA_CTRL, bts_nr, "location", "1234567,fix3d,0.340000,0.560000,0.780000");
f_ctrl_exp_trap(SCCPLITE_IPA_CTRL, "bts." & int2str(bts_nr) & ".location-state",
"1234567,fix3d,0.340000,0.560000,0.780000,operational,unlocked,on,001,01");
f_ctrl_set(SCCPLITE_IPA_CTRL, "rf_locked", "1");
f_sleep(2.0);
f_ctrl_set_bts(IPA_CTRL, bts_nr, "location", "1234888,fix3d,0.350000,0.570000,0.790000");
f_ctrl_exp_trap(SCCPLITE_IPA_CTRL, "bts." & int2str(bts_nr) & ".location-state",
"1234888,fix3d,0.350000,0.570000,0.790000,operational,locked,off,001,01");
/* should match the one from config */
f_ctrl_set(SCCPLITE_IPA_CTRL, "rf_locked", "0");
setverdict(pass);
}
/***********************************************************************
* Paging Testing
***********************************************************************/
type record Cell_Identity {
GsmMcc mcc,
GsmMnc mnc,
GsmLac lac,
GsmCellId ci
};
private const Cell_Identity cid := { '001'H, '01'H, 1, 0 };
private const Cell_Identity unknown_cid := { '678'H, 'f90'H, 1, 0 };
type set of integer BtsIdList;
private function f_bts_in_list(integer bts_id, BtsIdList bts_ids) return boolean {
for (var integer j := 0; j < sizeof(bts_ids); j := j + 1) {
if (bts_id == bts_ids[j]) {
return true;
}
}
return false;
}
/* core paging test helper function; used by most paging test cases */
private function f_pageing_helper(hexstring imsi,
template BSSMAP_FIELD_CellIdentificationList cid_list,
BtsIdList bts_ids := { 0 },
template RSL_ChanNeeded rsl_chneed := omit,
template (omit) OCT4 tmsi := omit) runs on test_CT
{
var template BSSMAP_IE_ChannelNeeded bssmap_chneed;
var template MobileIdentityV mi;
var RSL_Message rx_rsl;
var integer paging_group := hex2int(imsi[lengthof(imsi)-1]);
var integer i;
f_init();
/* Clear the queue, it might still contain stuff like BCCH FILLING */
for (i := 0; i < NUM_BTS; i := i + 1) {
IPA_RSL[i].clear;
}
if (isvalue(rsl_chneed)) {
/* The values of 08.08 3.2.2.36 and 08.58 9.3.40 are luckily identical */
bssmap_chneed := ts_BSSMAP_IE_ChanNeeded(int2bit(enum2int(valueof(rsl_chneed)),2));
} else {
bssmap_chneed := omit;
}
BSSAP.send(ts_BSSAP_UNITDATA_req(g_bssap[0].sccp_addr_peer, g_bssap[0].sccp_addr_own,
ts_BSSMAP_Paging(imsi, cid_list, tmsi, bssmap_chneed)));
if (not istemplatekind(tmsi, "omit")) {
mi := t_MI_TMSI(tmsi);
} else {
mi := tr_MI_IMSI(imsi);
}
for (i := 0; i < sizeof(bts_ids); i := i + 1) {
rx_rsl := f_exp_ipa_rx(bts_ids[i], tr_RSL_PAGING_CMD(mi));
/* check channel type, paging group */
if (rx_rsl.ies[1].body.paging_group != paging_group) {
setverdict(fail, "Paging for wrong paging group");
}
if (ispresent(rsl_chneed) and
rx_rsl.ies[3].body.chan_needed.chan_needed != valueof(rsl_chneed)) {
setverdict(fail, "RSL Channel Needed != BSSMAP Channel Needed");
}
}
f_sleep(2.0);
/* do a quick check on all not-included BTSs if they received paging */
for (i := 0; i < NUM_BTS; i := i + 1) {
timer T := 0.1;
if (f_bts_in_list(i, bts_ids)) {
continue;
}
T.start;
alt {
[] IPA_RSL[i].receive(tr_ASP_RSL_UD(tr_RSL_PAGING_CMD(mi))) {
setverdict(fail, "Paging on BTS ", i, " which is not part of ", bts_ids);
}
[] IPA_RSL[i].receive { repeat; }
[] T.timeout { }
}
}
setverdict(pass);
}
const BtsIdList c_BtsId_all := { 0, 1, 2 };
const BtsIdList c_BtsId_none := { };
const BtsIdList c_BtsId_LAC1 := { 0, 1 };
const BtsIdList c_BtsId_LAC2 := { 2 };
/* PAGING by IMSI + TMSI */
testcase TC_paging_imsi_nochan() runs on test_CT {
var BSSMAP_FIELD_CellIdentificationList cid_list;
cid_list := valueof(ts_BSSMAP_CIL_noCell);
f_pageing_helper('001010100000001'H, cid_list, c_BtsId_all, omit, omit);
f_shutdown_helper();
}
/* PAGING by IMSI + TMSI */
testcase TC_paging_tmsi_nochan() runs on test_CT {
var BSSMAP_FIELD_CellIdentificationList cid_list;
cid_list := valueof(ts_BSSMAP_CIL_noCell);
f_pageing_helper('001010100000001'H, cid_list, c_BtsId_all, omit, 'A1B2C301'O);
f_shutdown_helper();
}
/* Paging with different "channel needed' values */
testcase TC_paging_tmsi_any() runs on test_CT {
var BSSMAP_FIELD_CellIdentificationList cid_list;
cid_list := valueof(ts_BSSMAP_CIL_noCell);
f_pageing_helper('001010100000002'H, cid_list, c_BtsId_all, RSL_CHANNEED_ANY, 'A1B2C302'O);
f_shutdown_helper();
}
testcase TC_paging_tmsi_sdcch() runs on test_CT {
var BSSMAP_FIELD_CellIdentificationList cid_list;
cid_list := valueof(ts_BSSMAP_CIL_noCell);
f_pageing_helper('001010100000003'H, cid_list, c_BtsId_all, RSL_CHANNEED_SDCCH, 'A1B2C303'O);
f_shutdown_helper();
}
testcase TC_paging_tmsi_tch_f() runs on test_CT {
var BSSMAP_FIELD_CellIdentificationList cid_list;
cid_list := valueof(ts_BSSMAP_CIL_noCell);
f_pageing_helper('001010000000004'H, cid_list, c_BtsId_all, RSL_CHANNEED_TCH_F, 'A1B2C304'O);
f_shutdown_helper();
}
testcase TC_paging_tmsi_tch_hf() runs on test_CT {
var BSSMAP_FIELD_CellIdentificationList cid_list;
cid_list := valueof(ts_BSSMAP_CIL_noCell);
f_pageing_helper('001010000000005'H, cid_list, c_BtsId_all, RSL_CHANNEED_TCH_ForH, 'A1B2C305'O);
f_shutdown_helper();
}
/* Paging by CGI */
testcase TC_paging_imsi_nochan_cgi() runs on test_CT {
var template BSSMAP_FIELD_CellIdentificationList cid_list;
cid_list := { cIl_CGI := { ts_BSSMAP_CI_CGI(cid.mcc, cid.mnc, cid.lac, cid.ci) } };
f_pageing_helper('001010000000006'H, cid_list, { 0 });
f_shutdown_helper();
}
/* Paging by LAC+CI */
testcase TC_paging_imsi_nochan_lac_ci() runs on test_CT {
var template BSSMAP_FIELD_CellIdentificationList cid_list;
cid_list := { cIl_LAC_CI := { ts_BSSMAP_CI_LAC_CI(cid.lac, cid.ci) } };
f_pageing_helper('001010000000007'H, cid_list, { 0 });
f_shutdown_helper();
}
/* Paging by CI */
testcase TC_paging_imsi_nochan_ci() runs on test_CT {
var template BSSMAP_FIELD_CellIdentificationList cid_list;
cid_list := { cIl_CI := { ts_BSSMAP_CI_CI(cid.ci) } };
f_pageing_helper('001010000000008'H, cid_list, { 0 });
f_shutdown_helper();
}
/* Paging by LAI */
testcase TC_paging_imsi_nochan_lai() runs on test_CT {
var template BSSMAP_FIELD_CellIdentificationList cid_list;
cid_list := { cIl_LAI := { ts_BSSMAP_CI_LAI(cid.mcc, cid.mnc, cid.lac) } };
f_pageing_helper('001010000000009'H, cid_list, c_BtsId_LAC1);
f_shutdown_helper();
}
/* Paging by LAC */
testcase TC_paging_imsi_nochan_lac() runs on test_CT {
var template BSSMAP_FIELD_CellIdentificationList cid_list;
cid_list := { cIl_LAC := { ts_BSSMAP_CI_LAC(cid.lac) } };
f_pageing_helper('001010000000010'H, cid_list, c_BtsId_LAC1);
f_shutdown_helper();
}
/* Paging by "all in BSS" */
testcase TC_paging_imsi_nochan_all() runs on test_CT {
var template BSSMAP_FIELD_CellIdentificationList cid_list;
cid_list := { cIl_allInBSS := ''O };
f_pageing_helper('001010000000011'H, cid_list, c_BtsId_all);
f_shutdown_helper();
}
/* Paging by PLMN+LAC+RNC; We do not implement this; Verify nothing is paged */
testcase TC_paging_imsi_nochan_plmn_lac_rnc() runs on test_CT {
var template BSSMAP_FIELD_CellIdentificationList cid_list;
cid_list := { cIl_PLMN_LAC_RNC := { ts_BSSMAP_CI_PLMN_LAC_RNC(cid.mcc, cid.mnc, cid.lac, 12) } };
f_pageing_helper('001010000000012'H, cid_list, c_BtsId_none);
f_shutdown_helper();
}
/* Paging by RNC; We do not implement this; Verify nothing is paged */
testcase TC_paging_imsi_nochan_rnc() runs on test_CT {
var template BSSMAP_FIELD_CellIdentificationList cid_list;
cid_list := { cIl_RNC := { int2oct(13, 2) } };
f_pageing_helper('001010000000013'H, cid_list, c_BtsId_none);
f_shutdown_helper();
}
/* Paging by LAC+RNC; We do not implement; Verify nothing is paged */
testcase TC_paging_imsi_nochan_lac_rnc() runs on test_CT {
var template BSSMAP_FIELD_CellIdentificationList cid_list;
cid_list := { cIl_LAC_RNC := { ts_BSSMAP_CI_LAC_RNC(cid.lac, 14) } };
f_pageing_helper('001010000000014'H, cid_list, c_BtsId_none);
f_shutdown_helper();
}
/* Paging on multiple cells (multiple entries in list): Verify all of them page */
testcase TC_paging_imsi_nochan_lacs() runs on test_CT {
var template BSSMAP_FIELD_CellIdentificationList cid_list;
cid_list := { cIl_LAC := { ts_BSSMAP_CI_LAC(1), ts_BSSMAP_CI_LAC(2) } };
f_pageing_helper('001010000000015'H, cid_list, c_BtsId_all);
f_shutdown_helper();
}
/* Paging on empty list: Verify none of them page */
testcase TC_paging_imsi_nochan_lacs_empty() runs on test_CT {
var template BSSMAP_FIELD_CellIdentificationList cid_list;
cid_list := { cIl_LAC := { } };
f_pageing_helper('001010000000016'H, cid_list, c_BtsId_none);
f_shutdown_helper();
}
/* Paging by CGI with unknown MCC/MNC: Verify nothing is paged. */
testcase TC_paging_imsi_nochan_cgi_unknown_cid() runs on test_CT {
var template BSSMAP_FIELD_CellIdentificationList cid_list;
cid_list := { cIl_CGI := { ts_BSSMAP_CI_CGI(unknown_cid.mcc, unknown_cid.mnc, unknown_cid.lac, unknown_cid.ci) } };
f_pageing_helper('001010000000006'H, cid_list, c_BtsId_none);
f_shutdown_helper();
}
/* Verify paging retransmission interval + count */
/* Verify paging stops after channel establishment */
/* Test behavior under paging overload */
/* Verify PCH load */
testcase TC_paging_imsi_load() runs on test_CT {
var BSSMAP_FIELD_CellIdentificationList cid_list;
timer T := 4.0;
timer T_retrans := 1.0;
cid_list := valueof(ts_BSSMAP_CIL_noCell);
f_pageing_helper('001010123456789'H, cid_list, c_BtsId_all);
/* tell BSC there is no paging space anymore */
f_ipa_tx(0, ts_RSL_PAGING_LOAD_IND(0));
f_sleep(0.2);
IPA_RSL[0].clear;
/* Wait for 4 seconds if any more PAGING CMD are received on RSL. Normally,
* there would be 8 retransmissions during 4 seconds */
T.start;
T_retrans.start;
alt {
[] IPA_RSL[0].receive(tr_ASP_RSL_UD(tr_RSL_PAGING_CMD(?))) {
setverdict(fail, "Received PAGING after LOAD_IND(0)");
mtc.stop;
}
[] T_retrans.timeout {
/* re-trnsmit the zero-space LOAD IND to avoid BSC 'auto credit' */
f_ipa_tx(0, ts_RSL_PAGING_LOAD_IND(0));
T_retrans.start;
repeat;
}
[] T.timeout {
setverdict(pass);
}
}
f_shutdown_helper();
}
/* Verify Paging Counter */
testcase TC_paging_counter() runs on test_CT {
var BSSMAP_FIELD_CellIdentificationList cid_list;
timer T := 4.0;
var integer i;
var integer paging_attempted_bsc;
var integer paging_attempted_bts[NUM_BTS];
var integer paging_expired_bts[NUM_BTS];
cid_list := valueof(ts_BSSMAP_CIL_noCell);
f_init();
/* read counters before paging */
paging_attempted_bsc := f_ctrl_get_ratectr_abs(IPA_CTRL, "bsc", 0, "paging:attempted");
for (i := 0; i < NUM_BTS; i := i+1) {
paging_attempted_bts[i] := f_ctrl_get_ratectr_abs(IPA_CTRL, "bts", i, "paging:attempted");
paging_expired_bts[i] := f_ctrl_get_ratectr_abs(IPA_CTRL, "bts", i, "paging:expired");
}
f_pageing_helper('001230000000001'H, cid_list, c_BtsId_all);
/* expect the attempted pages on BSC and each BTSs to have incremented by one */
f_ctrl_get_exp_ratectr_abs(IPA_CTRL, "bsc", 0, "paging:attempted", paging_attempted_bsc+1);
for (i := 0; i < NUM_BTS; i := i+1) {
f_ctrl_get_exp_ratectr_abs(IPA_CTRL, "bts", i, "paging:attempted",
paging_attempted_bts[i]+1);
}
/* assume that 12s later the paging on all BTSs have expired and hence incremented by 1 */
f_sleep(12.0);
for (i := 0; i < NUM_BTS; i := i+1) {
f_ctrl_get_exp_ratectr_abs(IPA_CTRL, "bts", i, "paging:expired",
paging_expired_bts[i]+1);
}
f_shutdown_helper();
}
/* Verify paging stops after A-RESET */
testcase TC_paging_imsi_a_reset() runs on test_CT {
var BSSMAP_FIELD_CellIdentificationList cid_list;
timer T := 3.0;
cid_list := valueof(ts_BSSMAP_CIL_noCell);
f_pageing_helper('001010123456789'H, cid_list, c_BtsId_all);
/* Perform a BSSMAP Reset and wait for ACK */
BSSAP.send(ts_BSSAP_UNITDATA_req(g_bssap[0].sccp_addr_peer, g_bssap[0].sccp_addr_own, ts_BSSMAP_Reset(0, g_osmux_enabled)));
alt {
[] BSSAP.receive(tr_BSSAP_UNITDATA_ind(g_bssap[0].sccp_addr_own, g_bssap[0].sccp_addr_peer, tr_BSSMAP_ResetAck(g_osmux_enabled))) { }
[] BSSAP.receive { repeat; }
}
/* Wait to avoid a possible race condition if a paging message is
* received right before the reset ACK. */
f_sleep(0.2);
/* Clear the queue, it might still contain stuff like BCCH FILLING */
for (var integer i := 0; i < sizeof(IPA_RSL); i := i+1) {
IPA_RSL[i].clear;
}
/* Wait for 3 seconds if any more PAGING CMD are received on RSL */
T.start;
alt {
[] IPA_RSL[0].receive(tr_ASP_RSL_UD(tr_RSL_PAGING_CMD(?))) {
setverdict(fail, "Received PAGING after A-RESET");
mtc.stop;
}
[] IPA_RSL[1].receive(tr_ASP_RSL_UD(tr_RSL_PAGING_CMD(?))) {
setverdict(fail, "Received PAGING after A-RESET");
mtc.stop;
}
[] IPA_RSL[2].receive(tr_ASP_RSL_UD(tr_RSL_PAGING_CMD(?))) {
setverdict(fail, "Received PAGING after A-RESET");
mtc.stop;
}
[] T.timeout {
setverdict(pass);
}
}
f_shutdown_helper();
}
/* Verify how we handle unsolicited Paging Response. In case of an unsolicit
* paging response we can not know which MSC is in charge, so we will blindly
* pick the first configured MSC. This behavior is required in order to make
* MT-CSFB calls working because in those cases the BSC can not know that the
* MSC has already paged the subscriver via SGs. So any MT-CSFB call will look
* like an unsolicited Paging Response to the MSC.
*/
testcase TC_paging_resp_unsol() runs on test_CT {
f_init(1);
timer T := 5.0;
var BSSAP_N_CONNECT_ind rx_c_ind;
var DchanTuple dt;
var PDU_ML3_MS_NW l3 := valueof(ts_PAG_RESP(valueof(ts_MI_IMSI_LV('001010008880018'H))));
var octetstring rr_pag_resp := enc_PDU_ML3_MS_NW(l3);
/* Send CHAN RQD and wait for allocation; acknowledge it */
dt.rsl_chan_nr := f_chreq_act_ack();
/* Send unsolicited Paging response (no matching Paging CMD stored in BSC) */
f_ipa_tx(0, ts_RSL_EST_IND(dt.rsl_chan_nr, valueof(ts_RslLinkID_DCCH(0)), enc_PDU_ML3_MS_NW(l3)));
/* Expevct a CR with a matching Paging response on the A-Interface */
T.start;
alt {
[] BSSAP.receive(tr_BSSAP_CONNECT_ind(?, ?, tr_BSSMAP_ComplL3(rr_pag_resp))) {
setverdict(pass);
}
[] BSSAP.receive {
setverdict(fail, "Received unexpected message on A-Interface!");
}
[] T.timeout {
setverdict(fail, "Received nothing on A-Interface!");
}
}
setverdict(pass);
}
/* Test RSL link drop causes counter increment */
testcase TC_rsl_drop_counter() runs on test_CT {
var integer rsl_fail;
f_init(1);
rsl_fail := f_ctrl_get_ratectr_abs(IPA_CTRL, "bts", 0, "rsl_fail");
bts[0].rsl.vc_IPA.stop;
f_ctrl_get_exp_ratectr_abs(IPA_CTRL, "bts", 0, "rsl_fail", rsl_fail+1);
setverdict(pass);
}
/* TODO: Test OML link drop causes counter increment */
/* The body of TC_rsl_unknown_unit_id() and TC_oml_unknown_unit_id() tests. */
function f_ipa_unknown_unit_id(integer mp_bsc_ipa_port) runs on test_CT return boolean {
timer T := 10.0;
bts[0].rsl.id := "IPA-0-RSL";
bts[0].rsl.vc_IPA := IPA_Emulation_CT.create(bts[0].rsl.id & "-IPA");
bts[0].rsl.ccm_pars := c_IPA_default_ccm_pars;
bts[0].rsl.ccm_pars.name := "Osmocom TTCN-3 BTS Simulator";
bts[0].rsl.ccm_pars.unit_id := "99/0/0"; /* value which is unknown at BTS */
f_ipa_ctrl_start(mp_bsc_ip, mp_bsc_ctrl_port);
f_init_mgcp("VirtMSC");
/* start RSL/OML connection (XXX re-uses RSL port/protocol definitions for OML) */
map(bts[0].rsl.vc_IPA:IPA_PORT, system:IPA);
connect(bts[0].rsl.vc_IPA:IPA_RSL_PORT, self:IPA_RSL[0]);
bts[0].rsl.vc_IPA.start(IPA_Emulation.main_client(mp_bsc_ip, mp_bsc_ipa_port, "", 10000, bts[0].rsl.ccm_pars));
/* wait for IPA OML link to connect and then disconnect */
T.start;
alt {
[] IPA_RSL[0].receive(tr_ASP_IPA_EV(ASP_IPA_EVENT_DOWN)) {
T.stop;
return true;
}
[] IPA_RSL[0].receive { repeat }
[] T.timeout {
return false;
}
}
return false;
}
/* BSC should close an RSL connection from a BTS with unknown unit ID (OS#2714). */
testcase TC_rsl_unknown_unit_id() runs on test_CT {
if (f_ipa_unknown_unit_id(mp_bsc_rsl_port)) {
setverdict(pass);
} else {
setverdict(fail, "Timeout RSL waiting for connection to close");
}
}
/* BSC should close an RSL connection from a BTS with unknown unit ID (OS#2714). */
testcase TC_oml_unknown_unit_id() runs on test_CT {
if (f_ipa_unknown_unit_id(mp_bsc_oml_port)) {
setverdict(pass);
} else {
setverdict(fail, "Timeout OML waiting for connection to close");
}
}
/***********************************************************************
* "New world" test cases using RSL_Emulation + RAN_Emulation
***********************************************************************/
import from RAN_Emulation all;
import from RSL_Emulation all;
import from MSC_ConnectionHandler all;
type function void_fn(charstring id) runs on MSC_ConnHdlr;
/* helper function to create and connect a MSC_ConnHdlr component */
private function f_connect_handler(inout MSC_ConnHdlr vc_conn, integer bssap_idx := 0) runs on test_CT {
connect(vc_conn:RAN, g_bssap[bssap_idx].vc_RAN:PROC);
connect(vc_conn:MGCP_PROC, vc_MGCP:MGCP_PROC);
connect(vc_conn:RSL, bts[0].rsl.vc_RSL:CLIENT_PT);
connect(vc_conn:RSL_PROC, bts[0].rsl.vc_RSL:RSL_PROC);
if (isvalue(bts[1])) {
connect(vc_conn:RSL1, bts[1].rsl.vc_RSL:CLIENT_PT);
connect(vc_conn:RSL1_PROC, bts[1].rsl.vc_RSL:RSL_PROC);
}
if (isvalue(bts[2])) {
connect(vc_conn:RSL2, bts[2].rsl.vc_RSL:CLIENT_PT);
connect(vc_conn:RSL2_PROC, bts[2].rsl.vc_RSL:RSL_PROC);
}
connect(vc_conn:BSSAP, g_bssap[bssap_idx].vc_RAN:CLIENT);
connect(vc_conn:MGCP, vc_MGCP:MGCP_CLIENT);
connect(vc_conn:MGCP_MULTI, vc_MGCP:MGCP_CLIENT_MULTI);
connect(vc_conn:STATSD_PROC, vc_STATSD:STATSD_PROC);
}
function f_start_handler(void_fn fn, template (omit) TestHdlrParams pars := omit)
runs on test_CT return MSC_ConnHdlr {
var charstring id := testcasename();
var MSC_ConnHdlr vc_conn;
var integer bssap_idx := 0;
if (isvalue(pars)) {
bssap_idx := valueof(pars).mscpool.bssap_idx;
}
vc_conn := MSC_ConnHdlr.create(id);
f_connect_handler(vc_conn, bssap_idx);
vc_conn.start(f_handler_init(fn, id, pars));
return vc_conn;
}
/* first function inside ConnHdlr component; sets g_pars + starts function */
private function f_handler_init(void_fn fn, charstring id, template (omit) TestHdlrParams pars := omit)
runs on MSC_ConnHdlr {
if (isvalue(pars)) {
g_pars := valueof(pars);
}
fn.apply(id);
}
/* Establish signalling channel (non-assignment case) followed by cipher mode */
private function f_tc_ciph_mode_a5(charstring id) runs on MSC_ConnHdlr {
var template PDU_BSSAP exp_compl := f_gen_exp_compl();
var PDU_BSSAP ass_cmd := f_gen_ass_req();
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelTypeSIGNAL);
ass_cmd.pdu.bssmap.assignmentRequest.circuitIdentityCode := omit;
ass_cmd.pdu.bssmap.assignmentRequest.aoIPTransportLayer := omit;
exp_compl.pdu.bssmap.assignmentComplete.circuitIdentityCode := omit;
exp_compl.pdu.bssmap.assignmentComplete.aoIPTransportLayer := omit;
f_establish_fully(ass_cmd, exp_compl);
}
testcase TC_ciph_mode_a5_0() runs on test_CT {
var MSC_ConnHdlr vc_conn;
var TestHdlrParams pars := f_gen_test_hdlr_pars();
pars.encr := valueof(t_EncrParams('01'O, f_rnd_octstring(8)));
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_ciph_mode_a5), pars);
vc_conn.done;
}
testcase TC_ciph_mode_a5_1() runs on test_CT {
var MSC_ConnHdlr vc_conn;
var TestHdlrParams pars := f_gen_test_hdlr_pars();
pars.encr := valueof(t_EncrParams('02'O, f_rnd_octstring(8)));
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_ciph_mode_a5), pars);
vc_conn.done;
}
testcase TC_ciph_mode_a5_3() runs on test_CT {
var MSC_ConnHdlr vc_conn;
var TestHdlrParams pars := f_gen_test_hdlr_pars();
pars.encr := valueof(t_EncrParams('08'O, f_rnd_octstring(8)));
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_ciph_mode_a5), pars);
vc_conn.done;
}
/* establish initial channel, enable ciphering followed by assignment to ciphered channel */
private function f_tc_assignment_fr_a5(charstring id) runs on MSC_ConnHdlr {
var template PDU_BSSAP exp_compl := f_gen_exp_compl();
var PDU_BSSAP ass_cmd := f_gen_ass_req();
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
ass_cmd.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR}));
f_establish_fully(ass_cmd, exp_compl);
}
testcase TC_assignment_fr_a5_0() runs on test_CT {
var MSC_ConnHdlr vc_conn;
var TestHdlrParams pars := f_gen_test_hdlr_pars();
pars.encr := valueof(t_EncrParams('01'O, f_rnd_octstring(8)));
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_assignment_fr_a5), pars);
vc_conn.done;
}
testcase TC_assignment_fr_a5_1() runs on test_CT {
var MSC_ConnHdlr vc_conn;
var TestHdlrParams pars := f_gen_test_hdlr_pars();
pars.encr := valueof(t_EncrParams('02'O, f_rnd_octstring(8)));
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_assignment_fr_a5), pars);
vc_conn.done;
}
testcase TC_assignment_fr_a5_3() runs on test_CT {
var MSC_ConnHdlr vc_conn;
var TestHdlrParams pars := f_gen_test_hdlr_pars();
pars.encr := valueof(t_EncrParams('08'O, f_rnd_octstring(8)));
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_assignment_fr_a5), pars);
vc_conn.done;
}
/* Expect ASSIGNMENT FAIL if mandatory IE is missing */
private function f_tc_assignment_fr_a5_1_codec_missing(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
var template PDU_BSSAP exp_fail := tr_BSSMAP_AssignmentFail;
var PDU_BSSAP ass_cmd := f_gen_ass_req();
const OCT8 kc := '0001020304050607'O;
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
/* Omit: ass_cmd.pdu.bssmap.assignmentRequest.codecList */
f_establish_fully(ass_cmd, exp_fail);
}
testcase TC_assignment_fr_a5_1_codec_missing() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_assignment_fr_a5_1_codec_missing));
vc_conn.done;
}
private function f_tc_assignment_fr_a5_4(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
var template PDU_BSSAP exp_compl := f_gen_exp_compl();
var PDU_BSSAP ass_cmd := f_gen_ass_req();
const OCT8 kc := '0001020304050607'O;
const OCT16 kc128 := kc & kc;
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
ass_cmd.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR}));
f_establish_fully(ass_cmd, exp_compl);
f_cipher_mode('10'O, kc, kc128, true);
/* TODO: expect GSM0808_CAUSE_CIPHERING_ALGORITHM_NOT_SUPPORTED cause value */
}
testcase TC_assignment_fr_a5_4() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_assignment_fr_a5_4));
vc_conn.done;
}
private function f_tc_assignment_sign(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
var template PDU_BSSAP exp_compl := tr_BSSMAP_AssignmentComplete(omit, omit);
var PDU_BSSAP ass_cmd := f_gen_ass_req();
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelTypeSIGNAL);
f_statsd_reset();
f_establish_fully(ass_cmd, exp_compl);
var StatsDExpects expect := {
{ name := "TTCN3.bsc.0.assignment.attempted", mtype := "c", min := 1, max := 1},
{ name := "TTCN3.bsc.0.assignment.completed", mtype := "c", min := 1, max := 1}
};
f_statsd_expect(expect);
}
testcase TC_assignment_sign() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_assignment_sign));
vc_conn.done;
}
/***********************************************************************
* Codec (list) testing
***********************************************************************/
/* check if the given rsl_mode is compatible with the a_elem */
private function f_match_codec(BSSMAP_FIELD_CodecElement a_elem, RSL_IE_ChannelMode rsl_mode)
return boolean {
select (a_elem.codecType) {
case (GSM_FR) {
if (match(rsl_mode, tr_RSL_ChanMode(RSL_CHRT_TCH_F, RSL_CMOD_SP_GSM1))) {
return true;
}
}
case (GSM_HR) {
if (match(rsl_mode, tr_RSL_ChanMode(RSL_CHRT_TCH_H, RSL_CMOD_SP_GSM1))) {
return true;
}
}
case (GSM_EFR) {
if (match(rsl_mode, tr_RSL_ChanMode(RSL_CHRT_TCH_F, RSL_CMOD_SP_GSM2))) {
return true;
}
}
case (FR_AMR) {
if (match(rsl_mode, tr_RSL_ChanMode(RSL_CHRT_TCH_F, RSL_CMOD_SP_GSM3))) {
return true;
}
}
case (HR_AMR) {
if (match(rsl_mode, tr_RSL_ChanMode(RSL_CHRT_TCH_H, RSL_CMOD_SP_GSM3))) {
return true;
}
}
case else { }
}
return false;
}
/* check if the given rsl_mode is compatible with the a_list */
private function f_match_codecs(BSSMAP_IE_SpeechCodecList a_list, RSL_IE_ChannelMode rsl_mode)
return boolean {
for (var integer i := 0; i < sizeof(a_list); i := i+1) {
if (f_match_codec(a_list.codecElements[i], rsl_mode)) {
return true;
}
}
return false;
}
/* determine BSSMAP_IE_ChannelType from *first* element of BSSMAP_FIELD_CodecElement */
function f_BSSMAP_chtype_from_codec(BSSMAP_FIELD_CodecElement a_elem)
return BSSMAP_IE_ChannelType {
/* FIXME: actually look at all elements of BSSMAP_IE_SpeechCodecList */
var BSSMAP_IE_ChannelType ret := valueof(ts_BSSMAP_IE_ChannelType);
select (a_elem.codecType) {
case (GSM_FR) {
ret.channelRateAndType := ChRate_TCHF;
ret.speechId_DataIndicator := Spdi_TCHF_FR;
}
case (GSM_HR) {
ret.channelRateAndType := ChRate_TCHH;
ret.speechId_DataIndicator := Spdi_TCHH_HR;
}
case (GSM_EFR) {
ret.channelRateAndType := ChRate_TCHF;
ret.speechId_DataIndicator := Spdi_TCHF_EFR;
}
case (FR_AMR) {
ret.channelRateAndType := ChRate_TCHF;
ret.speechId_DataIndicator := Spdi_TCHF_AMR;
}
case (HR_AMR) {
ret.channelRateAndType := ChRate_TCHH;
ret.speechId_DataIndicator := Spdi_TCHH_AMR;
}
case else {
setverdict(fail, "Unsupported codec ", a_elem);
mtc.stop;
}
}
return ret;
}
private function f_rsl_chmod_tmpl_from_codec(BSSMAP_FIELD_CodecElement a_elem)
return template RSL_IE_Body {
var template RSL_IE_Body mode_ie := {
chan_mode := {
len := ?,
reserved := ?,
dtx_d := ?,
dtx_u := ?,
spd_ind := RSL_SPDI_SPEECH,
ch_rate_type := -,
coding_alg_rate := -
}
}
select (a_elem.codecType) {
case (GSM_FR) {
mode_ie.chan_mode.ch_rate_type := RSL_CHRT_TCH_F;
mode_ie.chan_mode.coding_alg_rate := RSL_CMOD_SP_GSM1;
}
case (GSM_HR) {
mode_ie.chan_mode.ch_rate_type := RSL_CHRT_TCH_H;
mode_ie.chan_mode.coding_alg_rate := RSL_CMOD_SP_GSM1;
}
case (GSM_EFR) {
mode_ie.chan_mode.ch_rate_type := RSL_CHRT_TCH_F;
mode_ie.chan_mode.coding_alg_rate := RSL_CMOD_SP_GSM2;
}
case (FR_AMR) {
mode_ie.chan_mode.ch_rate_type := RSL_CHRT_TCH_F;
mode_ie.chan_mode.coding_alg_rate := RSL_CMOD_SP_GSM3;
}
case (HR_AMR) {
mode_ie.chan_mode.ch_rate_type := RSL_CHRT_TCH_H;
mode_ie.chan_mode.coding_alg_rate := RSL_CMOD_SP_GSM3;
}
}
return mode_ie;
}
type record CodecListTest {
BSSMAP_IE_SpeechCodecList codec_list,
charstring id
}
type record of CodecListTest CodecListTests
private function f_TC_assignment_codec(charstring id) runs on MSC_ConnHdlr {
var PDU_BSSAP ass_cmd := f_gen_ass_req(g_pars.use_osmux);
var template PDU_BSSAP exp_compl := f_gen_exp_compl(g_pars.use_osmux);
/* puzzle together the ASSIGNMENT REQ for given codec[s] */
if (mp_bssap_cfg[0].transport == BSSAP_TRANSPORT_AoIP) {
ass_cmd.pdu.bssmap.assignmentRequest.codecList := g_pars.ass_codec_list;
exp_compl.pdu.bssmap.assignmentComplete.speechCodec.codecElements[0] :=
g_pars.ass_codec_list.codecElements[0];
if (isvalue(g_pars.expect_mr_s0_s7)) {
exp_compl.pdu.bssmap.assignmentComplete.speechCodec.codecElements[0].s0_7 :=
g_pars.expect_mr_s0_s7;
}
}
ass_cmd.pdu.bssmap.assignmentRequest.channelType :=
f_BSSMAP_chtype_from_codec(g_pars.ass_codec_list.codecElements[0]);
log("expecting ASS COMPL like this: ", exp_compl);
f_establish_fully(ass_cmd, exp_compl);
/* Verify that the RSL-side activation actually matches our expectations */
var RSL_Message rsl := f_rslem_get_last_act(RSL_PROC, 0, g_chan_nr);
var RSL_IE_Body mode_ie;
if (f_rsl_find_ie(rsl, RSL_IE_CHAN_MODE, mode_ie) == false) {
setverdict(fail, "Couldn't find CHAN_MODE IE");
mtc.stop;
}
var template RSL_IE_Body t_mode_ie := f_rsl_chmod_tmpl_from_codec(g_pars.ass_codec_list.codecElements[0]);
if (not match(mode_ie, t_mode_ie)) {
setverdict(fail, "RSL Channel Mode IE doesn't match expectation");
}
var RSL_IE_Body mr_conf;
if (g_pars.expect_mr_conf_ie != omit) {
if (f_rsl_find_ie(rsl, RSL_IE_MR_CONFIG, mr_conf) == false) {
setverdict(fail, "Missing MR CONFIG IE in RSL Chan Activ");
mtc.stop;
}
log("found RSL MR CONFIG IE: ", mr_conf);
if (not match(mr_conf, g_pars.expect_mr_conf_ie)) {
setverdict(fail, "RSL MR CONFIG IE does not match expectation. Expected: ",
g_pars.expect_mr_conf_ie);
}
} else {
if (f_rsl_find_ie(rsl, RSL_IE_MR_CONFIG, mr_conf) == true) {
log("found RSL MR CONFIG IE: ", mr_conf);
setverdict(fail, "Found MR CONFIG IE in RSL Chan Activ, expecting omit");
mtc.stop;
}
}
}
private function f_TC_assignment_codec_fail(charstring id) runs on MSC_ConnHdlr {
var PDU_BSSAP ass_cmd := f_gen_ass_req();
var template PDU_BSSAP exp_fail := tr_BSSMAP_AssignmentFail;
/* puzzle together the ASSIGNMENT REQ for given codec[s] */
if (mp_bssap_cfg[0].transport == BSSAP_TRANSPORT_AoIP) {
ass_cmd.pdu.bssmap.assignmentRequest.codecList := g_pars.ass_codec_list;
}
ass_cmd.pdu.bssmap.assignmentRequest.channelType :=
f_BSSMAP_chtype_from_codec(g_pars.ass_codec_list.codecElements[0]);
log("expecting ASS FAIL like this: ", exp_fail);
f_establish_fully(ass_cmd, exp_fail);
}
testcase TC_assignment_codec_fr() runs on test_CT {
var TestHdlrParams pars := f_gen_test_hdlr_pars();
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
pars.ass_codec_list := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR}));
vc_conn := f_start_handler(refers(f_TC_assignment_codec), pars);
vc_conn.done;
}
testcase TC_assignment_codec_hr() runs on test_CT {
var TestHdlrParams pars := f_gen_test_hdlr_pars();
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
pars.ass_codec_list := valueof(ts_BSSMAP_IE_CodecList({ts_CodecHR}));
vc_conn := f_start_handler(refers(f_TC_assignment_codec), pars);
vc_conn.done;
}
testcase TC_assignment_codec_efr() runs on test_CT {
var TestHdlrParams pars := f_gen_test_hdlr_pars();
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
pars.ass_codec_list := valueof(ts_BSSMAP_IE_CodecList({ts_CodecEFR}));
vc_conn := f_start_handler(refers(f_TC_assignment_codec), pars);
vc_conn.done;
}
/* Allow 5,90k only (current default config) */
private function f_allow_amr_rate_5_90k() runs on test_CT {
f_vty_enter_cfg_msc(BSCVTY, 0);
f_vty_transceive(BSCVTY, "amr-config 12_2k forbidden");
f_vty_transceive(BSCVTY, "amr-config 10_2k forbidden");
f_vty_transceive(BSCVTY, "amr-config 7_95k forbidden");
f_vty_transceive(BSCVTY, "amr-config 7_40k forbidden");
f_vty_transceive(BSCVTY, "amr-config 6_70k forbidden");
f_vty_transceive(BSCVTY, "amr-config 5_90k allowed");
f_vty_transceive(BSCVTY, "amr-config 5_15k forbidden");
f_vty_transceive(BSCVTY, "amr-config 4_75k forbidden");
f_vty_transceive(BSCVTY, "exit");
f_vty_transceive(BSCVTY, "exit");
}
/* Allow 4,75k, 5,90k, 4,70k and 12,2k, which are the most common rates
* ("Config-NB-Code = 1") */
private function f_allow_amr_rate_4_75k_5_90k_7_40k_12_20k() runs on test_CT {
f_vty_enter_cfg_msc(BSCVTY, 0);
f_vty_transceive(BSCVTY, "amr-config 12_2k allowed");
f_vty_transceive(BSCVTY, "amr-config 10_2k forbidden");
f_vty_transceive(BSCVTY, "amr-config 7_95k forbidden");
f_vty_transceive(BSCVTY, "amr-config 7_40k allowed");
f_vty_transceive(BSCVTY, "amr-config 6_70k forbidden");
f_vty_transceive(BSCVTY, "amr-config 5_90k allowed");
f_vty_transceive(BSCVTY, "amr-config 5_15k forbidden");
f_vty_transceive(BSCVTY, "amr-config 4_75k allowed");
f_vty_transceive(BSCVTY, "exit");
f_vty_transceive(BSCVTY, "exit");
}
testcase TC_assignment_codec_amr_f() runs on test_CT {
var TestHdlrParams pars := f_gen_test_hdlr_pars();
var MSC_ConnHdlr vc_conn;
/* Note: This setups the codec configuration. The parameter payload in
* mr_conf must be consistant with the parameter codecElements in pars
* and also must match the amr-config in osmo-bsc.cfg! */
var RSL_IE_Body mr_conf := {
other := {
len := 2,
payload := '2804'O
}
};
pars.ass_codec_list := valueof(ts_BSSMAP_IE_CodecList({ts_CodecAMR_F}));
pars.ass_codec_list.codecElements[0].s0_7 := '00000100'B; /* 5,90k */
pars.ass_codec_list.codecElements[0].s8_15 := '01010111'B;
pars.expect_mr_conf_ie := mr_conf;
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_TC_assignment_codec), pars);
vc_conn.done;
}
testcase TC_assignment_codec_amr_h() runs on test_CT {
var TestHdlrParams pars := f_gen_test_hdlr_pars();
var MSC_ConnHdlr vc_conn;
/* See note above */
var RSL_IE_Body mr_conf := {
other := {
len := 2,
payload := '2804'O
}
};
pars.ass_codec_list := valueof(ts_BSSMAP_IE_CodecList({ts_CodecAMR_H}));
pars.ass_codec_list.codecElements[0].s0_7 := '00000100'B; /* 5,90k */
pars.ass_codec_list.codecElements[0].s8_15 := '00000111'B;
pars.expect_mr_conf_ie := mr_conf;
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_TC_assignment_codec), pars);
vc_conn.done;
}
function f_TC_assignment_codec_amr(boolean fr, octetstring mrconf, bitstring s8_s0, bitstring exp_s8_s0)
runs on test_CT {
var TestHdlrParams pars := f_gen_test_hdlr_pars();
var MSC_ConnHdlr vc_conn;
/* See note above */
var RSL_IE_Body mr_conf := {
other := {
len := lengthof(mrconf),
payload := mrconf
}
};
if (fr) {
pars.ass_codec_list := valueof(ts_BSSMAP_IE_CodecList({ts_CodecAMR_F}));
} else {
pars.ass_codec_list := valueof(ts_BSSMAP_IE_CodecList({ts_CodecAMR_H}));
}
pars.ass_codec_list.codecElements[0].s0_7 := s8_s0;
pars.ass_codec_list.codecElements[0].s8_15 := '00000111'B;
pars.expect_mr_conf_ie := mr_conf;
pars.expect_mr_s0_s7 := exp_s8_s0;
f_init(1, true);
f_allow_amr_rate_4_75k_5_90k_7_40k_12_20k();
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_TC_assignment_codec), pars);
vc_conn.done;
f_allow_amr_rate_5_90k();
}
function f_TC_assignment_codec_amr_fail(boolean fr, bitstring s8_s0)
runs on test_CT {
var TestHdlrParams pars := f_gen_test_hdlr_pars();
var MSC_ConnHdlr vc_conn;
if (fr) {
pars.ass_codec_list := valueof(ts_BSSMAP_IE_CodecList({ts_CodecAMR_F}));
} else {
pars.ass_codec_list := valueof(ts_BSSMAP_IE_CodecList({ts_CodecAMR_H}));
}
pars.ass_codec_list.codecElements[0].s0_7 := s8_s0;
pars.ass_codec_list.codecElements[0].s8_15 := '00000111'B;
f_init(1, true);
f_allow_amr_rate_4_75k_5_90k_7_40k_12_20k();
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_TC_assignment_codec_fail), pars);
vc_conn.done;
f_allow_amr_rate_5_90k();
}
/* Set S1, we expect an AMR multirate configuration IE with all four rates
* set. */
testcase TC_assignment_codec_amr_f_S1() runs on test_CT {
f_TC_assignment_codec_amr(true, '289520882208'O, '00000010'B, '00000010'B);
}
/* Set S1, we expect an AMR multirate configuration IE with the lower three
* rates set. */
testcase TC_assignment_codec_amr_h_S1() runs on test_CT {
f_TC_assignment_codec_amr(false, '2815208820'O, '00000010'B, '00000010'B);
}
/* Set S1 and two other rates, we expect an AMR MULTIRATE CONFIGURATION IE with
* all four rates (and only S1 set in the ASSIGNMENT COMPLETE) */
testcase TC_assignment_codec_amr_f_S124() runs on test_CT {
f_TC_assignment_codec_amr(true, '289520882208'O, '00010110'B, '00000010'B);
}
/* Set S1 and two other rates, we expect an AMR MULTIRATE CONFIGURATION IE with
* all four rates (and only S1 set in the ASSIGNMENT COMPLETE) */
testcase TC_assignment_codec_amr_h_S124() runs on test_CT {
f_TC_assignment_codec_amr(false, '2815208820'O, '00010110'B, '00000010'B);
}
/* The following block of tests selects more and more rates until all four
* possible rates are in the active set (full rate) */
testcase TC_assignment_codec_amr_f_S0() runs on test_CT {
f_TC_assignment_codec_amr(true, '2801'O, '00000001'B, '00000001'B);
}
testcase TC_assignment_codec_amr_f_S02() runs on test_CT {
f_TC_assignment_codec_amr(true, '28052080'O, '00000101'B, '00000101'B);
}
testcase TC_assignment_codec_amr_f_S024() runs on test_CT {
f_TC_assignment_codec_amr(true, '2815208820'O, '00010101'B, '00010101'B);
}
testcase TC_assignment_codec_amr_f_S0247() runs on test_CT {
f_TC_assignment_codec_amr(true, '289520882208'O, '10010101'B, '10010101'B);
}
/* The following block of tests selects more and more rates until all three
* possible rates are in the active set (half rate) */
testcase TC_assignment_codec_amr_h_S0() runs on test_CT {
f_TC_assignment_codec_amr(false, '2801'O, '00000001'B, '00000001'B);
}
testcase TC_assignment_codec_amr_h_S02() runs on test_CT {
f_TC_assignment_codec_amr(false, '28052080'O, '00000101'B, '00000101'B);
}
testcase TC_assignment_codec_amr_h_S024() runs on test_CT {
f_TC_assignment_codec_amr(false, '2815208820'O, '00010101'B, '00010101'B);
}
/* The following block tests what happens when the MSC does offer rate
* configurations that are not supported by the BSC. Normally such situations
* should not happen because the MSC gets informed by the BSC in advance via
* the L3 COMPLETE message which rates are applicable. The MSC should not try
* to offer rates that are not applicable anyway. */
testcase TC_assignment_codec_amr_h_S0247() runs on test_CT {
/* Try to include 12,2k in into the active set even though the channel
* is half rate only. The BSC is expected to remove the 12,0k */
f_TC_assignment_codec_amr(false, '2815208820'O, '10010101'B, '00010101'B);
}
testcase TC_assignment_codec_amr_f_S01234567() runs on test_CT {
/* See what happens when all rates are selected at once. Since then
* Also S1 is selected, this setting will be prefered and we should
* get 12.2k, 7,40k, 5,90k, and 4,75k in the active set. */
f_TC_assignment_codec_amr(true, '289520882208'O, '11111111'B, '00000010'B);
}
testcase TC_assignment_codec_amr_f_S0234567() runs on test_CT {
/* Same as above, but with S1 missing, the MSC is then expected to
* select the currently supported rates, which are also 12.2k, 7,40k,
* 5,90k, and 4,75k, into the active set. */
f_TC_assignment_codec_amr(true, '289520882208'O, '11111101'B, '10010101'B);
}
testcase TC_assignment_codec_amr_f_zero() runs on test_CT {
/* Try to select no rates at all */
f_TC_assignment_codec_amr_fail(true, '00000000'B);
}
testcase TC_assignment_codec_amr_f_unsupp() runs on test_CT {
/* Try to select only unsupported rates */
f_TC_assignment_codec_amr_fail(true, '01101000'B);
}
testcase TC_assignment_codec_amr_h_S7() runs on test_CT {
/* Try to select 12,2k for half rate */
f_TC_assignment_codec_amr_fail(false, '10000000'B);
}
private function f_disable_all_tch_f() runs on test_CT {
f_vty_transceive(BSCVTY, "bts 0 trx 0 timeslot 1 sub-slot 0 borken");
f_vty_transceive(BSCVTY, "bts 0 trx 0 timeslot 2 sub-slot 0 borken");
f_vty_transceive(BSCVTY, "bts 0 trx 0 timeslot 3 sub-slot 0 borken");
f_vty_transceive(BSCVTY, "bts 0 trx 0 timeslot 4 sub-slot 0 borken");
}
private function f_disable_all_tch_h() runs on test_CT {
f_vty_transceive(BSCVTY, "bts 0 trx 0 timeslot 5 sub-slot 0 borken");
f_vty_transceive(BSCVTY, "bts 0 trx 0 timeslot 5 sub-slot 1 borken");
}
private function f_enable_all_tch() runs on test_CT {
f_vty_transceive(BSCVTY, "bts 0 trx 0 timeslot 1 sub-slot 0 unused");
f_vty_transceive(BSCVTY, "bts 0 trx 0 timeslot 2 sub-slot 0 unused");
f_vty_transceive(BSCVTY, "bts 0 trx 0 timeslot 3 sub-slot 0 unused");
f_vty_transceive(BSCVTY, "bts 0 trx 0 timeslot 4 sub-slot 0 unused");
f_vty_transceive(BSCVTY, "bts 0 trx 0 timeslot 5 sub-slot 0 unused");
f_vty_transceive(BSCVTY, "bts 0 trx 0 timeslot 5 sub-slot 1 unused");
}
/* Allow HR only */
private function f_TC_assignment_codec_xr_exhausted_req_hr(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
var PDU_BSSAP ass_cmd := f_gen_ass_req();
var template PDU_BSSAP exp_compl := f_gen_exp_compl();
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
ass_cmd.pdu.bssmap.assignmentRequest.channelType.channelRateAndType := '09'O;
ass_cmd.pdu.bssmap.assignmentRequest.channelType.speechId_DataIndicator := '05'O;
ass_cmd.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecHR}));
f_establish_fully(ass_cmd, exp_compl);
}
/* Allow FR only */
private function f_TC_assignment_codec_xr_exhausted_req_fr(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
var PDU_BSSAP ass_cmd := f_gen_ass_req();
var template PDU_BSSAP exp_compl := f_gen_exp_compl();
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
ass_cmd.pdu.bssmap.assignmentRequest.channelType.channelRateAndType := '08'O;
ass_cmd.pdu.bssmap.assignmentRequest.channelType.speechId_DataIndicator := '01'O;
ass_cmd.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR}));
f_establish_fully(ass_cmd, exp_compl);
}
/* Allow HR only (expect assignment failure) */
private function f_TC_assignment_codec_xr_exhausted_req_hr_fail(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
var PDU_BSSAP ass_cmd := f_gen_ass_req();
var template PDU_BSSAP exp_fail := tr_BSSMAP_AssignmentFail;
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
ass_cmd.pdu.bssmap.assignmentRequest.channelType.channelRateAndType := '09'O;
ass_cmd.pdu.bssmap.assignmentRequest.channelType.speechId_DataIndicator := '05'O;
ass_cmd.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecHR}));
f_establish_fully(ass_cmd, exp_fail);
}
/* Allow FR only (expect assignment failure) */
private function f_TC_assignment_codec_xr_exhausted_req_fr_fail(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
var PDU_BSSAP ass_cmd := f_gen_ass_req();
var template PDU_BSSAP exp_fail := tr_BSSMAP_AssignmentFail;
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
ass_cmd.pdu.bssmap.assignmentRequest.channelType.channelRateAndType := '08'O;
ass_cmd.pdu.bssmap.assignmentRequest.channelType.speechId_DataIndicator := '01'O;
ass_cmd.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR}));
f_establish_fully(ass_cmd, exp_fail);
}
/* Allow FR and HR, but prefer FR */
private function f_TC_assignment_codec_fr_exhausted_req_fr_hr(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
var PDU_BSSAP ass_cmd := f_gen_ass_req();
var template PDU_BSSAP exp_compl := f_gen_exp_compl();
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
ass_cmd.pdu.bssmap.assignmentRequest.channelType.channelRateAndType := '0A'O; /* Prefer FR */
ass_cmd.pdu.bssmap.assignmentRequest.channelType.speechId_DataIndicator := '8105'O;
ass_cmd.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR, ts_CodecHR}));
exp_compl.pdu.bssmap.assignmentComplete.speechVersion.speechVersionIdentifier := '0000101'B; /* Expect HR */
f_establish_fully(ass_cmd, exp_compl);
}
/* Allow FR and HR, but prefer HR */
private function f_TC_assignment_codec_fr_exhausted_req_hr_fr(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
var PDU_BSSAP ass_cmd := f_gen_ass_req();
var template PDU_BSSAP exp_compl := f_gen_exp_compl();
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
ass_cmd.pdu.bssmap.assignmentRequest.channelType.channelRateAndType := '0B'O; /* Prefer HR */
ass_cmd.pdu.bssmap.assignmentRequest.channelType.speechId_DataIndicator := '8501'O;
ass_cmd.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecHR, ts_CodecFR}));
exp_compl.pdu.bssmap.assignmentComplete.speechVersion.speechVersionIdentifier := '0000101'B; /* Expect HR */
f_establish_fully(ass_cmd, exp_compl);
}
/* Allow FR and HR, but prefer FR */
private function f_TC_assignment_codec_hr_exhausted_req_fr_hr(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
var PDU_BSSAP ass_cmd := f_gen_ass_req();
var template PDU_BSSAP exp_compl := f_gen_exp_compl();
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
ass_cmd.pdu.bssmap.assignmentRequest.channelType.channelRateAndType := '0A'O; /* Prefer FR */
ass_cmd.pdu.bssmap.assignmentRequest.channelType.speechId_DataIndicator := '8105'O;
ass_cmd.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR, ts_CodecHR}));
exp_compl.pdu.bssmap.assignmentComplete.speechVersion.speechVersionIdentifier := '0000001'B; /* Expect FR */
f_establish_fully(ass_cmd, exp_compl);
}
/* Allow FR and HR, but prefer HR */
private function f_TC_assignment_codec_hr_exhausted_req_hr_fr(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
var PDU_BSSAP ass_cmd := f_gen_ass_req();
var template PDU_BSSAP exp_compl := f_gen_exp_compl();
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
ass_cmd.pdu.bssmap.assignmentRequest.channelType.channelRateAndType := '0B'O; /* Prefer HR */
ass_cmd.pdu.bssmap.assignmentRequest.channelType.speechId_DataIndicator := '8501'O;
ass_cmd.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecHR, ts_CodecFR}));
exp_compl.pdu.bssmap.assignmentComplete.speechVersion.speechVersionIdentifier := '0000001'B; /* Expect FR */
f_establish_fully(ass_cmd, exp_compl);
}
/* Request a HR channel while all FR channels are exhausted, this is expected
* to work without conflicts */
testcase TC_assignment_codec_fr_exhausted_req_hr() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
f_enable_all_tch();
f_disable_all_tch_f();
vc_conn := f_start_handler(refers(f_TC_assignment_codec_xr_exhausted_req_hr));
vc_conn.done;
f_enable_all_tch();
setverdict(pass);
}
/* Request a FR channel while all FR channels are exhausted, this is expected
* to fail. */
testcase TC_assignment_codec_fr_exhausted_req_fr() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
f_enable_all_tch();
f_disable_all_tch_f();
vc_conn := f_start_handler(refers(f_TC_assignment_codec_xr_exhausted_req_fr_fail));
vc_conn.done;
f_enable_all_tch();
setverdict(pass);
}
/* Request a FR (prefered) or alternatively a HR channel while all FR channels
* are exhausted, this is expected to be resolved by selecting a HR channel. */
testcase TC_assignment_codec_fr_exhausted_req_fr_hr() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
f_enable_all_tch();
f_disable_all_tch_f();
vc_conn := f_start_handler(refers(f_TC_assignment_codec_fr_exhausted_req_fr_hr));
vc_conn.done;
f_enable_all_tch();
setverdict(pass);
}
/* Request a HR (prefered) or alternatively a FR channel while all FR channels
* are exhausted, this is expected to work without conflicts. */
testcase TC_assignment_codec_fr_exhausted_req_hr_fr() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
f_enable_all_tch();
f_disable_all_tch_f();
vc_conn := f_start_handler(refers(f_TC_assignment_codec_fr_exhausted_req_hr_fr));
vc_conn.done;
f_enable_all_tch();
setverdict(pass);
}
/* Request a FR channel while all HR channels are exhausted, this is expected
* to work without conflicts */
testcase TC_assignment_codec_hr_exhausted_req_fr() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
f_enable_all_tch();
f_disable_all_tch_h();
vc_conn := f_start_handler(refers(f_TC_assignment_codec_xr_exhausted_req_fr));
vc_conn.done;
f_enable_all_tch();
setverdict(pass);
}
/* Request a HR channel while all HR channels are exhausted, this is expected
* to fail. */
testcase TC_assignment_codec_hr_exhausted_req_hr() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
f_enable_all_tch();
f_disable_all_tch_h();
vc_conn := f_start_handler(refers(f_TC_assignment_codec_xr_exhausted_req_hr_fail));
vc_conn.done;
f_enable_all_tch();
setverdict(pass);
}
/* Request a HR (prefered) or alternatively a FR channel while all HR channels
* are exhausted, this is expected to be resolved by selecting a FR channel. */
testcase TC_assignment_codec_hr_exhausted_req_hr_fr() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
f_enable_all_tch();
f_disable_all_tch_h();
vc_conn := f_start_handler(refers(f_TC_assignment_codec_hr_exhausted_req_hr_fr));
vc_conn.done;
f_enable_all_tch();
setverdict(pass);
}
/* Request a FR (prefered) or alternatively a HR channel while all HR channels
* are exhausted, this is expected to work without conflicts. */
testcase TC_assignment_codec_hr_exhausted_req_fr_hr() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
f_enable_all_tch();
f_disable_all_tch_h();
vc_conn := f_start_handler(refers(f_TC_assignment_codec_hr_exhausted_req_fr_hr));
vc_conn.done;
f_enable_all_tch();
setverdict(pass);
}
/* Allow FR and HR, but prefer HR */
private function f_TC_assignment_codec_req_hr_fr(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
var PDU_BSSAP ass_cmd := f_gen_ass_req();
var template PDU_BSSAP exp_compl := f_gen_exp_compl();
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
ass_cmd.pdu.bssmap.assignmentRequest.channelType.channelRateAndType := '0B'O; /* Prefer HR */
ass_cmd.pdu.bssmap.assignmentRequest.channelType.speechId_DataIndicator := '8501'O;
ass_cmd.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecHR, ts_CodecFR}));
exp_compl.pdu.bssmap.assignmentComplete.speechVersion.speechVersionIdentifier := '0000101'B; /* Expect HR */
f_establish_fully(ass_cmd, exp_compl);
}
/* Allow FR and HR, but prefer FR */
private function f_TC_assignment_codec_req_fr_hr(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
var PDU_BSSAP ass_cmd := f_gen_ass_req();
var template PDU_BSSAP exp_compl := f_gen_exp_compl();
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
ass_cmd.pdu.bssmap.assignmentRequest.channelType.channelRateAndType := '0A'O; /* Prefer FR */
ass_cmd.pdu.bssmap.assignmentRequest.channelType.speechId_DataIndicator := '8105'O;
ass_cmd.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR, ts_CodecHR}));
exp_compl.pdu.bssmap.assignmentComplete.speechVersion.speechVersionIdentifier := '0000001'B; /* Expect FR */
f_establish_fully(ass_cmd, exp_compl);
}
/* Request a HR (prefered) or alternatively a FR channel, it is expected that
* HR, which is the prefered type, is selected. */
testcase TC_assignment_codec_req_hr_fr() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
f_enable_all_tch();
vc_conn := f_start_handler(refers(f_TC_assignment_codec_req_hr_fr));
vc_conn.done;
setverdict(pass);
}
/* Request a FR (prefered) or alternatively a HR channel, it is expected that
* FR, which is the prefered type, is selected. */
testcase TC_assignment_codec_req_fr_hr() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
f_enable_all_tch();
vc_conn := f_start_handler(refers(f_TC_assignment_codec_req_fr_hr));
vc_conn.done;
setverdict(pass);
}
testcase TC_assignment_osmux() runs on test_CT {
var TestHdlrParams pars := f_gen_test_hdlr_pars();
var MSC_ConnHdlr vc_conn;
/* See note above */
var RSL_IE_Body mr_conf := {
other := {
len := 2,
payload := '2804'O
}
};
pars.ass_codec_list := valueof(ts_BSSMAP_IE_CodecList({ts_CodecAMR_H}));
pars.ass_codec_list.codecElements[0].s0_7 := '00000100'B; /* 5,90k */
pars.ass_codec_list.codecElements[0].s8_15 := '00000111'B;
pars.expect_mr_conf_ie := mr_conf;
pars.use_osmux := true;
f_init(1, true, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_TC_assignment_codec), pars);
vc_conn.done;
}
/* test the procedure of the MSC requesting a Classmark Update:
* a) BSSMAP Classmark Request should result in RR CLASSMARK ENQUIRY,
* b) L3 RR CLASSMARK CHANGE should result in BSSMAP CLASSMARK UPDATE */
private function f_tc_classmark(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
f_create_chan_and_exp();
/* we should now have a COMPL_L3 at the MSC */
BSSAP.receive(tr_BSSMAP_ComplL3);
BSSAP.send(ts_BSSMAP_ClassmarkRequest);
RSL.receive(tr_RSL_DATA_REQ(g_chan_nr, ?, decmatch tr_RRM_CM_ENQUIRY));
f_rsl_send_l3(ts_RRM_CM_CHG(valueof(ts_CM2)));
BSSAP.receive(tr_BSSMAP_ClassmarkUpd(?, omit));
setverdict(pass);
}
testcase TC_classmark() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_classmark));
vc_conn.done;
}
/* Send a CommonID from the simulated MSC and verify that the information is used to
* fill BSC-internal data structures (specifically, bsc_subscr associated with subscr_conn) */
private function f_tc_common_id(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
f_MscConnHdlr_init_vty();
f_create_chan_and_exp();
/* we should now have a COMPL_L3 at the MSC */
BSSAP.receive(tr_BSSMAP_ComplL3);
/* Send CommonID */
BSSAP.send(ts_BSSMAP_CommonId(g_pars.imsi));
/* Use VTY to verify that the IMSI of the subscr_conn is set */
var charstring regex := "*(IMSI: " & hex2str(g_pars.imsi) & ")*";
f_vty_transceive_match_regexp_retry(BSCVTY, "show conns", regex, 0, 4, 1.0);
setverdict(pass);
}
testcase TC_common_id() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_common_id));
vc_conn.done;
}
private function f_est_single_l3(template PDU_ML3_MS_NW l3) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
f_create_chan_and_exp();
/* we should now have a COMPL_L3 at the MSC */
BSSAP.receive(tr_BSSMAP_ComplL3);
/* send the single message we want to send */
f_rsl_send_l3(l3);
}
private function f_bssap_expect_nothing(float sec := 5.00) runs on MSC_ConnHdlr {
timer T := sec;
var PDU_BSSAP bssap;
T.start;
alt {
[] BSSAP.receive(PDU_BSSAP:?) -> value bssap {
setverdict(fail, "Unexpected BSSMAP ", bssap);
mtc.stop;
}
[] T.timeout {
setverdict(pass);
}
}
}
/* unsolicited ASSIGNMENT FAIL (without ASSIGN) from MS shouldn't bring BSC down */
private function f_tc_unsol_ass_fail(charstring id) runs on MSC_ConnHdlr {
f_est_single_l3(ts_RRM_AssignmentFailure('00'O));
f_bssap_expect_nothing();
}
testcase TC_unsol_ass_fail() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_unsol_ass_fail));
vc_conn.done;
}
/* unsolicited ASSIGNMENT COMPLETE (without ASSIGN) from MS shouldn't bring BSC down */
private function f_tc_unsol_ass_compl(charstring id) runs on MSC_ConnHdlr {
f_est_single_l3(ts_RRM_AssignmentComplete('00'O));
f_bssap_expect_nothing();
}
testcase TC_unsol_ass_compl() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_unsol_ass_compl));
vc_conn.done;
}
/* unsolicited HANDOVER FAIL (without ASSIGN) from MS shouldn't bring BSC down */
private function f_tc_unsol_ho_fail(charstring id) runs on MSC_ConnHdlr {
f_est_single_l3(ts_RRM_HandoverFailure('00'O));
f_bssap_expect_nothing();
}
testcase TC_unsol_ho_fail() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_unsol_ho_fail));
vc_conn.done;
}
/* short message from MS should be ignored */
private function f_tc_err_82_short_msg(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
f_create_chan_and_exp();
/* we should now have a COMPL_L3 at the MSC */
BSSAP.receive(tr_BSSMAP_ComplL3);
/* send short message */
RSL.send(ts_RSL_DATA_IND(g_chan_nr, valueof(ts_RslLinkID_DCCH(0)), ''O));
f_bssap_expect_nothing();
}
testcase TC_err_82_short_msg() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_err_82_short_msg));
vc_conn.done;
}
/* 24.008 8.4 Unknown message must trigger RR STATUS */
private function f_tc_err_84_unknown_msg(charstring id) runs on MSC_ConnHdlr {
f_est_single_l3(ts_RRM_UL_REL('00'O));
timer T := 3.0
alt {
[] RSL.receive(tr_RSL_DATA_REQ(g_chan_nr, ?, decmatch tr_RRM_RR_STATUS)) {
setverdict(pass);
}
[] BSSAP.receive { setverdict(fail, "unexpected BSSAP"); }
[] T.timeout { setverdict(fail, "Timeout waiting for RR STATUS"); }
}
}
testcase TC_err_84_unknown_msg() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_err_84_unknown_msg));
vc_conn.done;
}
/***********************************************************************
* Handover
***********************************************************************/
/* execute a "bts <0-255> trx <0-255> timeslot <0-7> " command on given Dchan */
private function f_vty_ts_action(charstring suffix, integer bts_nr, integer trx_nr, integer ts_nr)
runs on test_CT {
var charstring cmd := "bts "&int2str(bts_nr)&" trx "&int2str(trx_nr)&
" timeslot "&int2str(ts_nr)&" ";
f_vty_transceive(BSCVTY, cmd & suffix);
}
/* execute a "bts <0-255> trx <0-255> timeslot <0-7> sub-slot <0-7>" command on given Dchan */
private function f_vty_ss_action(charstring suffix, integer bts_nr, integer trx_nr, RslChannelNr chan_nr)
runs on MSC_ConnHdlr {
/* FIXME: resolve those from component-global state */
var integer ts_nr := chan_nr.tn;
var integer ss_nr;
if (ischosen(chan_nr.u.ch0)) {
ss_nr := 0;
} else if (ischosen(chan_nr.u.lm)) {
ss_nr := chan_nr.u.lm.sub_chan;
} else if (ischosen(chan_nr.u.sdcch4)) {
ss_nr := chan_nr.u.sdcch4.sub_chan;
} else if (ischosen(chan_nr.u.sdcch8)) {
ss_nr := chan_nr.u.sdcch8.sub_chan;
} else {
setverdict(fail, "Invalid ChanNr ", chan_nr);
mtc.stop;
}
var charstring cmd := "bts "&int2str(bts_nr)&" trx "&int2str(trx_nr)&
" timeslot "&int2str(ts_nr)&" sub-slot "&int2str(ss_nr)&" ";
f_vty_transceive(BSCVTY, cmd & suffix);
}
/* Even though the VTY command to trigger handover takes a new BTS number as argument, behind the scenes osmo-bsc always
* translates that to a target ARFCN+BSIC first. See bsc_vty.c trigger_ho_or_as(), which puts the selected BTS' neighbor
* ident key (ARFCN + BSIC) in the struct passed on to handover_request(). handover_start() then resolves that to a
* viable actual neighbor cell. So from the internal osmo-bsc perspective, we always request handover to an ARFCN + BSIC
* pair, not really to a specific BTS number. */
private function f_vty_handover(integer bts_nr, integer trx_nr, RslChannelNr chan_nr,
integer new_bts_nr)
runs on MSC_ConnHdlr {
f_vty_ss_action("handover " & int2str(new_bts_nr), bts_nr, trx_nr, chan_nr);
}
/* intra-BSC hand-over between BTS0 and BTS1 */
private function f_tc_ho_int(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
var template PDU_BSSAP exp_compl := f_gen_exp_compl();
var PDU_BSSAP ass_cmd := f_gen_ass_req();
const OCT8 kc := '0001020304050607'O;
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
ass_cmd.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR}));
f_establish_fully(ass_cmd, exp_compl);
f_bts_0_cfg(BSCVTY, {"neighbor bts 1"});
var HandoverState hs := {
rr_ho_cmpl_seen := false,
handover_done := false,
old_chan_nr := -
};
/* issue hand-over command on VTY */
f_vty_handover(0, 0, g_chan_nr, 1);
/* temporarily suspend DChan processing on BTS1 to avoid race with RSLEM_register */
f_rslem_suspend(RSL1_PROC);
/* From the MGW perspective, a handover is is characterized by
* performing one MDCX operation with the MGW. So we expect to see
* one more MDCX during handover. */
g_media.mgcp_conn[0].mdcx_seen_exp := g_media.mgcp_conn[0].crcx_seen_exp + 1;
alt {
[] as_handover(hs);
}
/* Since this is an internal handover we expect the BSC to inform the
* MSC about the event */
BSSAP.receive(tr_BSSMAP_HandoverPerformed);
/* Check the amount of MGCP transactions is still consistant with the
* test expectation */
f_check_mgcp_expectations()
f_sleep(0.5);
}
testcase TC_ho_int() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(2, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_ho_int));
vc_conn.done;
}
/* Expecting MGCP to DLCX the endpoint's two connections: towards BTS and towards MSC */
private function f_expect_dlcx_conns() runs on MSC_ConnHdlr {
var MgcpCommand mgcp;
var template MgcpResponse mgcp_resp;
var MGCP_RecvFrom mrf;
var template MgcpMessage msg_resp;
var template MgcpMessage msg_dlcx := {
command := tr_DLCX()
}
if (g_pars.aoip) {
MGCP.receive(tr_DLCX()) -> value mgcp {
log("Got first DLCX: ", mgcp);
MGCP.send(ts_DLCX_ACK2(mgcp.line.trans_id));
};
MGCP.receive(tr_DLCX()) -> value mgcp {
log("Got second DLCX: ", mgcp);
MGCP.send(ts_DLCX_ACK2(mgcp.line.trans_id));
};
} else {
/* For SCCPLite, BSC doesn't handle the MSC-side */
MGCP_MULTI.receive(tr_MGCP_RecvFrom_any(msg_dlcx)) -> value mrf {
log("Got first DLCX: ", mrf.msg.command);
msg_resp := {
response := ts_DLCX_ACK2(mrf.msg.command.line.trans_id)
}
MGCP_MULTI.send(t_MGCP_SendToMrf(mrf, msg_resp));
};
}
BSSAP.receive(tr_BSSMAP_ClearComplete);
}
private function f_tc_ho_out_of_this_bsc(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
var PDU_BSSAP ass_req := f_gen_ass_req();
ass_req.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
ass_req.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR}));
var template PDU_BSSAP exp_compl := f_gen_exp_compl();
f_establish_fully(ass_req, exp_compl);
f_bts_0_cfg(BSCVTY, {"neighbor lac 99 arfcn 123 bsic any"});
f_vty_transceive(BSCVTY, "handover any to arfcn 123 bsic any");
BSSAP.receive(tr_BSSMAP_HandoverRequired);
f_sleep(0.5);
/* The MSC negotiates Handover Request and Handover Request Ack with
* the other BSS and comes back with a BSSMAP Handover Command
* containing an RR Handover Command coming from the target BSS... */
var PDU_ML3_NW_MS rr_ho_cmd := valueof(ts_RR_HandoverCommand);
log("Remote cell's RR Handover Command passed through as L3 Info: ", rr_ho_cmd);
var octetstring rr_ho_cmd_enc := enc_PDU_ML3_NW_MS(rr_ho_cmd);
log("Remote cell's RR Handover Command passed through as L3 Info, encoded: ", rr_ho_cmd_enc);
BSSAP.send(ts_BSSMAP_HandoverCommand(rr_ho_cmd_enc));
/* expect the Handover Command to go out on RR */
var RSL_Message rsl_ho_cmd
RSL.receive(tr_RSL_DATA_REQ(g_chan_nr, ?, ?)) -> value rsl_ho_cmd;
log("RSL Data Req went out to first BTS: ", rsl_ho_cmd);
var RSL_IE_Body rsl_ho_cmd_l3;
if (not f_rsl_find_ie(rsl_ho_cmd, RSL_IE_L3_INFO, rsl_ho_cmd_l3)) {
log("RSL message contains no L3 Info IE, expected RR Handover Command");
setverdict(fail);
} else {
log("Found L3 Info: ", rsl_ho_cmd_l3);
if (rsl_ho_cmd_l3.l3_info.payload != rr_ho_cmd_enc) {
log("FAIL: the BSC sent out a different L3 Info, not matching the RR Handover Command the other BSS forwarded.");
setverdict(fail);
} else {
log("Success: the BSC sent out the same RR Handover Command the other BSS forwarded.");
setverdict(pass);
}
}
/* When the other BSS has reported a completed handover, this side is
* torn down. */
var myBSSMAP_Cause cause_val := GSM0808_CAUSE_HANDOVER_SUCCESSFUL;
var BssmapCause cause := enum2int(cause_val);
BSSAP.send(ts_BSSMAP_ClearCommand(cause));
f_expect_dlcx_conns();
setverdict(pass);
f_sleep(1.0);
}
testcase TC_ho_out_of_this_bsc() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_ho_out_of_this_bsc));
vc_conn.done;
}
/* BSC asks for inter-BSC HO, but the MSC decides that it won't happen and
* simply never sends a BSSMAP Handover Command. */
private function f_tc_ho_out_fail_no_msc_response(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
var PDU_BSSAP ass_req := f_gen_ass_req();
ass_req.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
ass_req.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR}));
var template PDU_BSSAP exp_compl := f_gen_exp_compl();
f_establish_fully(ass_req, exp_compl);
f_bts_0_cfg(BSCVTY, {"neighbor lac 99 arfcn 123 bsic any"});
f_vty_transceive(BSCVTY, "handover any to arfcn 123 bsic any");
BSSAP.receive(tr_BSSMAP_HandoverRequired);
/* osmo-bsc should time out 10 seconds after the handover started.
* Let's give it a bit extra. */
f_sleep(15.0);
/* The old lchan and conn should still be active. See that arbitrary L3
* is still going through. */
var octetstring l3 := '0123456789'O;
RSL.send(ts_RSL_DATA_IND(g_chan_nr, valueof(ts_RslLinkID_DCCH(0)), l3));
var template PDU_BSSAP exp_data := {
discriminator := '1'B,
spare := '0000000'B,
dlci := '00'O,
lengthIndicator := 5,
pdu := {
dtap := l3
}
};
BSSAP.receive(exp_data);
setverdict(pass);
f_sleep(1.0);
}
testcase TC_ho_out_fail_no_msc_response() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_ho_out_fail_no_msc_response));
vc_conn.done;
}
/* BSC asks for inter-BSC HO, receives BSSMAP Handover Command, but MS reports
* RR Handover Failure. */
private function f_tc_ho_out_fail_rr_ho_failure(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
var PDU_BSSAP ass_req := f_gen_ass_req();
ass_req.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
ass_req.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR}));
var template PDU_BSSAP exp_compl := f_gen_exp_compl();
f_establish_fully(ass_req, exp_compl);
f_bts_0_cfg(BSCVTY, {"neighbor lac 99 arfcn 123 bsic any"});
f_vty_transceive(BSCVTY, "handover any to arfcn 123 bsic any");
BSSAP.receive(tr_BSSMAP_HandoverRequired);
f_sleep(0.5);
/* The MSC negotiates Handover Request and Handover Request Ack with
* the other BSS and comes back with a BSSMAP Handover Command
* containing an RR Handover Command coming from the target BSS... */
var PDU_ML3_NW_MS rr_ho_cmd := valueof(ts_RR_HandoverCommand);
log("Remote cell's RR Handover Command passed through as L3 Info: ", rr_ho_cmd);
var octetstring rr_ho_cmd_enc := enc_PDU_ML3_NW_MS(rr_ho_cmd);
log("Remote cell's RR Handover Command passed through as L3 Info, encoded: ", rr_ho_cmd_enc);
BSSAP.send(ts_BSSMAP_HandoverCommand(rr_ho_cmd_enc));
/* expect the Handover Command to go out on RR */
var RSL_Message rsl_ho_cmd
RSL.receive(tr_RSL_DATA_REQ(g_chan_nr, ?, ?)) -> value rsl_ho_cmd;
log("RSL Data Req went out to first BTS: ", rsl_ho_cmd);
var RSL_IE_Body rsl_ho_cmd_l3;
if (not f_rsl_find_ie(rsl_ho_cmd, RSL_IE_L3_INFO, rsl_ho_cmd_l3)) {
log("RSL message contains no L3 Info IE, expected RR Handover Command");
setverdict(fail);
} else {
log("Found L3 Info: ", rsl_ho_cmd_l3);
if (rsl_ho_cmd_l3.l3_info.payload != rr_ho_cmd_enc) {
log("FAIL: the BSC sent out a different L3 Info, not matching the RR Handover Command the other BSS forwarded.");
setverdict(fail);
} else {
log("Success: the BSC sent out the same RR Handover Command the other BSS forwarded.");
setverdict(pass);
}
}
f_sleep(0.2);
f_rsl_send_l3(ts_RRM_HandoverFailure('00'O));
/* Should tell the MSC about the failure */
BSSAP.receive(tr_BSSMAP_HandoverFailure);
f_sleep(1.0);
/* The old lchan and conn should still be active. See that arbitrary L3
* is still going through. */
var octetstring l3 := '0123456789'O;
RSL.send(ts_RSL_DATA_IND(g_chan_nr, valueof(ts_RslLinkID_DCCH(0)), l3));
var template PDU_BSSAP exp_data := {
discriminator := '1'B,
spare := '0000000'B,
dlci := '00'O,
lengthIndicator := 5,
pdu := {
dtap := l3
}
};
BSSAP.receive(exp_data);
setverdict(pass);
f_sleep(1.0);
setverdict(pass);
f_sleep(1.0);
}
testcase TC_ho_out_fail_rr_ho_failure() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_ho_out_fail_rr_ho_failure));
vc_conn.done;
}
/* BSC asks for inter-BSC-out HO, receives BSSMAP Handover Command, but then no reply is received about HO outcome
* (neither BSSMAP Clear Command for success nor RR Handover Failure). 48.008 3.1.5.3.3 "Abnormal Conditions" applies
* and the lchan is released. */
private function f_tc_ho_out_fail_no_result_after_ho_cmd(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
var PDU_BSSAP ass_req := f_gen_ass_req();
ass_req.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
ass_req.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR}));
var template PDU_BSSAP exp_compl := f_gen_exp_compl();
f_establish_fully(ass_req, exp_compl);
f_bts_0_cfg(BSCVTY, {"neighbor lac 99 arfcn 123 bsic any"});
f_vty_transceive(BSCVTY, "handover any to arfcn 123 bsic any");
BSSAP.receive(tr_BSSMAP_HandoverRequired);
f_sleep(0.5);
/* The MSC negotiates Handover Request and Handover Request Ack with
* the other BSS and comes back with a BSSMAP Handover Command
* containing an RR Handover Command coming from the target BSS... */
var PDU_ML3_NW_MS rr_ho_cmd := valueof(ts_RR_HandoverCommand);
log("Remote cell's RR Handover Command passed through as L3 Info: ", rr_ho_cmd);
var octetstring rr_ho_cmd_enc := enc_PDU_ML3_NW_MS(rr_ho_cmd);
log("Remote cell's RR Handover Command passed through as L3 Info, encoded: ", rr_ho_cmd_enc);
BSSAP.send(ts_BSSMAP_HandoverCommand(rr_ho_cmd_enc));
/* expect the Handover Command to go out on RR */
var RSL_Message rsl_ho_cmd
RSL.receive(tr_RSL_DATA_REQ(g_chan_nr, ?, ?)) -> value rsl_ho_cmd;
log("RSL Data Req went out to first BTS: ", rsl_ho_cmd);
var RSL_IE_Body rsl_ho_cmd_l3;
if (not f_rsl_find_ie(rsl_ho_cmd, RSL_IE_L3_INFO, rsl_ho_cmd_l3)) {
log("RSL message contains no L3 Info IE, expected RR Handover Command");
setverdict(fail);
} else {
log("Found L3 Info: ", rsl_ho_cmd_l3);
if (rsl_ho_cmd_l3.l3_info.payload != rr_ho_cmd_enc) {
log("FAIL: the BSC sent out a different L3 Info, not matching the RR Handover Command the other BSS forwarded.");
setverdict(fail);
} else {
log("Success: the BSC sent out the same RR Handover Command the other BSS forwarded.");
setverdict(pass);
}
}
/* We get neither success nor failure report from the remote BSS. Eventually T8 times out and we run into 3GPP
* TS 48.008 3.1.5.3.3 "Abnormal Conditions": Clear Request should go to the MSC, and RR should be released
* after Clear Command */
var PDU_BSSAP rx_clear_request;
BSSAP.receive(tr_BSSMAP_ClearRequest) -> value rx_clear_request;
log("Got BSSMAP Clear Request");
/* Instruct BSC to clear channel */
var BssmapCause cause := bit2int(rx_clear_request.pdu.bssmap.clearRequest.cause.causeValue);
BSSAP.send(ts_BSSMAP_ClearCommand(cause));
var MgcpCommand mgcp;
interleave {
[] RSL.receive(tr_RSL_DEACT_SACCH(g_chan_nr)) {
log("Got Deact SACCH");
}
[] RSL.receive(tr_RSL_DATA_REQ(g_chan_nr, ?, decmatch tr_RRM_RR_RELEASE)) {
log("Got RR Release");
}
[] RSL.receive(tr_RSL_MsgTypeD(RSL_MT_RF_CHAN_REL)) {
log("Got RF Chan Rel");
RSL.send(ts_RSL_RF_CHAN_REL_ACK(g_chan_nr));
}
}
f_expect_dlcx_conns();
setverdict(pass);
f_sleep(1.0);
}
testcase TC_ho_out_fail_no_result_after_ho_cmd() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_ho_out_fail_no_result_after_ho_cmd));
vc_conn.done;
}
private function f_tc_ho_into_this_bsc(charstring id) runs on MSC_ConnHdlr {
/* Hack: the proper way would be to wait for the BSSMAP Handover Request ACK and extract the
* actual assigned chan_nr from its L3 (RR Handover Command) message. 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;
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);
activate(as_Media());
BSSAP.send(ts_BSSAP_Conn_Req(g_pars.sccp_addr_bsc, g_pars.sccp_addr_msc,
f_gen_handover_req()));
BSSAP.receive(RAN_Conn_Prim:MSC_CONN_PRIM_CONF_IND);
/* The RSL Emulation magically accepts the Chan Activ behind the scenes. */
var PDU_BSSAP rx_bssap;
var octetstring ho_command_str;
BSSAP.receive(tr_BSSMAP_HandoverRequestAcknowledge(?)) -> value rx_bssap;
ho_command_str := rx_bssap.pdu.bssmap.handoverRequestAck.layer3Information.layer3info;
log("Received L3 Info in HO Request Ack: ", ho_command_str);
var PDU_ML3_NW_MS ho_command := dec_PDU_ML3_NW_MS(ho_command_str);
log("L3 Info in HO Request Ack is ", ho_command);
var GsmArfcn arfcn;
var RslChannelNr actual_new_chan_nr;
f_ChDesc2RslChanNr(ho_command.msgs.rrm.handoverCommand.channelDescription2,
actual_new_chan_nr, arfcn);
if (actual_new_chan_nr != new_chan_nr) {
log("ERROR: osmo-bsc assigned a different lchan than we assumed above -- this test will fail now.",
" Assumed: ", new_chan_nr, " Assigned: ", actual_new_chan_nr);
setverdict(fail);
return;
}
log("Handover Command chan_nr is", actual_new_chan_nr);
/* Now the MSC forwards the RR Handover Command to the other BSC, which
* tells the MS to handover to the new lchan. Here comes the new MS on
* the new lchan with a Handover RACH: */
/* send handover detect */
RSL.send(ts_RSL_HANDO_DET(new_chan_nr));
BSSAP.receive(tr_BSSMAP_HandoverDetect);
/* send handover complete over the new channel */
var PDU_ML3_MS_NW l3_tx := valueof(ts_RRM_HandoverComplete('00'O));
RSL.send(ts_RSL_EST_IND(new_chan_nr, valueof(ts_RslLinkID_DCCH(0)),
enc_PDU_ML3_MS_NW(l3_tx)));
BSSAP.receive(tr_BSSMAP_HandoverComplete);
setverdict(pass);
}
testcase TC_ho_into_this_bsc() 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);
pars.sccp_addr_msc := g_bssap[0].sccp_addr_own;
pars.sccp_addr_bsc := g_bssap[0].sccp_addr_peer;
vc_conn := f_start_handler(refers(f_tc_ho_into_this_bsc), pars);
vc_conn.done;
}
private function f_tc_ho_in_fail_msc_clears(charstring id) runs on MSC_ConnHdlr {
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;
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);
activate(as_Media());
BSSAP.send(ts_BSSAP_Conn_Req(g_pars.sccp_addr_bsc, g_pars.sccp_addr_msc,
f_gen_handover_req()));
BSSAP.receive(RAN_Conn_Prim:MSC_CONN_PRIM_CONF_IND);
/* The RSL Emulation magically accepts the Chan Activ behind the scenes. */
var PDU_BSSAP rx_bssap;
var octetstring ho_command_str;
BSSAP.receive(tr_BSSMAP_HandoverRequestAcknowledge(?)) -> value rx_bssap;
ho_command_str := rx_bssap.pdu.bssmap.handoverRequestAck.layer3Information.layer3info;
log("Received L3 Info in HO Request Ack: ", ho_command_str);
var PDU_ML3_NW_MS ho_command := dec_PDU_ML3_NW_MS(ho_command_str);
log("L3 Info in HO Request Ack is ", ho_command);
var GsmArfcn arfcn;
var RslChannelNr actual_new_chan_nr;
f_ChDesc2RslChanNr(ho_command.msgs.rrm.handoverCommand.channelDescription2,
actual_new_chan_nr, arfcn);
if (actual_new_chan_nr != new_chan_nr) {
log("ERROR: osmo-bsc assigned a different lchan than we assumed above -- this test will fail now.",
" Assumed: ", new_chan_nr, " Assigned: ", actual_new_chan_nr);
setverdict(fail);
return;
}
log("Handover Command chan_nr is", actual_new_chan_nr);
/* For deterministic test results, give some time for the MGW endpoint to be configured */
f_sleep(1.0);
/* Now the MSC forwards the RR Handover Command to the other BSC, which
* tells the MS to handover to the new lchan. In this case, the MS
* reports a Handover Failure to the old BSS, which forwards a BSSMAP
* Handover Failure to the MSC. The procedure according to 3GPP TS
* 48.008 3.1.5.3.2 "Handover Failure" is then that the MSC sends a
* BSSMAP Clear Command: */
var myBSSMAP_Cause cause_val := GSM0808_CAUSE_RADIO_INTERFACE_FAILURE_REVERSION;
var BssmapCause cause := enum2int(cause_val);
BSSAP.send(ts_BSSMAP_ClearCommand(cause));
f_expect_dlcx_conns();
setverdict(pass);
f_sleep(1.0);
setverdict(pass);
}
testcase TC_ho_in_fail_msc_clears() 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);
pars.sccp_addr_msc := g_bssap[0].sccp_addr_own;
pars.sccp_addr_bsc := g_bssap[0].sccp_addr_peer;
vc_conn := f_start_handler(refers(f_tc_ho_in_fail_msc_clears), pars);
vc_conn.done;
}
private function f_tc_ho_in_fail_msc_clears_after_ho_detect(charstring id) runs on MSC_ConnHdlr {
/* Hack: the proper way would be to wait for the BSSMAP Handover Request ACK and extract the
* actual assigned chan_nr from its L3 (RR Handover Command) message. 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;
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);
activate(as_Media());
BSSAP.send(ts_BSSAP_Conn_Req(g_pars.sccp_addr_bsc, g_pars.sccp_addr_msc,
f_gen_handover_req()));
BSSAP.receive(RAN_Conn_Prim:MSC_CONN_PRIM_CONF_IND);
/* The RSL Emulation magically accepts the Chan Activ behind the scenes. */
var PDU_BSSAP rx_bssap;
var octetstring ho_command_str;
BSSAP.receive(tr_BSSMAP_HandoverRequestAcknowledge(?)) -> value rx_bssap;
ho_command_str := rx_bssap.pdu.bssmap.handoverRequestAck.layer3Information.layer3info;
log("Received L3 Info in HO Request Ack: ", ho_command_str);
var PDU_ML3_NW_MS ho_command := dec_PDU_ML3_NW_MS(ho_command_str);
log("L3 Info in HO Request Ack is ", ho_command);
var GsmArfcn arfcn;
var RslChannelNr actual_new_chan_nr;
f_ChDesc2RslChanNr(ho_command.msgs.rrm.handoverCommand.channelDescription2,
actual_new_chan_nr, arfcn);
if (actual_new_chan_nr != new_chan_nr) {
log("ERROR: osmo-bsc assigned a different lchan than we assumed above -- this test will fail now.",
" Assumed: ", new_chan_nr, " Assigned: ", actual_new_chan_nr);
setverdict(fail);
return;
}
log("Handover Command chan_nr is", actual_new_chan_nr);
/* Now the MSC forwards the RR Handover Command to the other BSC, which
* tells the MS to handover to the new lchan. Here comes the new MS on
* the new lchan with a Handover RACH: */
/* send handover detect */
RSL.send(ts_RSL_HANDO_DET(new_chan_nr));
BSSAP.receive(tr_BSSMAP_HandoverDetect);
/* The MSC chooses to clear the connection now, maybe we got the
* Handover RACH on the new cell but the MS still signaled Handover
* Failure to the old BSS? */
var myBSSMAP_Cause cause_val := GSM0808_CAUSE_RADIO_INTERFACE_FAILURE_REVERSION;
var BssmapCause cause := enum2int(cause_val);
BSSAP.send(ts_BSSMAP_ClearCommand(cause));
f_expect_dlcx_conns();
setverdict(pass);
f_sleep(1.0);
}
testcase TC_ho_in_fail_msc_clears_after_ho_detect() 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);
pars.sccp_addr_msc := g_bssap[0].sccp_addr_own;
pars.sccp_addr_bsc := g_bssap[0].sccp_addr_peer;
vc_conn := f_start_handler(refers(f_tc_ho_in_fail_msc_clears_after_ho_detect), pars);
vc_conn.done;
}
/* The new BSS's lchan times out before the MSC decides that handover failed. */
private function f_tc_ho_in_fail_no_detect(charstring id) runs on MSC_ConnHdlr {
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;
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);
activate(as_Media());
BSSAP.send(ts_BSSAP_Conn_Req(g_pars.sccp_addr_bsc, g_pars.sccp_addr_msc,
f_gen_handover_req()));
BSSAP.receive(RAN_Conn_Prim:MSC_CONN_PRIM_CONF_IND);
/* The RSL Emulation magically accepts the Chan Activ behind the scenes. */
var PDU_BSSAP rx_bssap;
var octetstring ho_command_str;
BSSAP.receive(tr_BSSMAP_HandoverRequestAcknowledge(?)) -> value rx_bssap;
ho_command_str := rx_bssap.pdu.bssmap.handoverRequestAck.layer3Information.layer3info;
log("Received L3 Info in HO Request Ack: ", ho_command_str);
var PDU_ML3_NW_MS ho_command := dec_PDU_ML3_NW_MS(ho_command_str);
log("L3 Info in HO Request Ack is ", ho_command);
var GsmArfcn arfcn;
var RslChannelNr actual_new_chan_nr;
f_ChDesc2RslChanNr(ho_command.msgs.rrm.handoverCommand.channelDescription2,
actual_new_chan_nr, arfcn);
if (actual_new_chan_nr != new_chan_nr) {
log("ERROR: osmo-bsc assigned a different lchan than we assumed above -- this test will fail now.",
" Assumed: ", new_chan_nr, " Assigned: ", actual_new_chan_nr);
setverdict(fail);
return;
}
log("Handover Command chan_nr is", actual_new_chan_nr);
/* Now the MSC forwards the RR Handover Command to the other BSC, which
* tells the MS to handover to the new lchan. But the MS never shows up
* on the new lchan. */
BSSAP.receive(tr_BSSMAP_HandoverFailure);
/* Did osmo-bsc also send a Clear Request? */
timer T := 0.5;
T.start;
alt {
[] BSSAP.receive(tr_BSSMAP_ClearRequest);
[] T.timeout { }
}
/* MSC plays along with a Clear Command (no matter whether osmo-bsc
* asked for it, this is a Handover Failure after all). */
var myBSSMAP_Cause cause_val := GSM0808_CAUSE_RADIO_INTERFACE_FAILURE_REVERSION;
var BssmapCause cause := enum2int(cause_val);
BSSAP.send(ts_BSSMAP_ClearCommand(cause));
f_expect_dlcx_conns();
setverdict(pass);
f_sleep(1.0);
setverdict(pass);
}
testcase TC_ho_in_fail_no_detect() 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);
pars.sccp_addr_msc := g_bssap[0].sccp_addr_own;
pars.sccp_addr_bsc := g_bssap[0].sccp_addr_peer;
vc_conn := f_start_handler(refers(f_tc_ho_in_fail_no_detect), pars);
vc_conn.done;
}
/* Same as f_tc_ho_in_fail_no_detect, but MSC fails to send a Clear Command */
private function f_tc_ho_in_fail_no_detect2(charstring id) runs on MSC_ConnHdlr {
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;
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);
activate(as_Media());
BSSAP.send(ts_BSSAP_Conn_Req(g_pars.sccp_addr_bsc, g_pars.sccp_addr_msc,
f_gen_handover_req()));
BSSAP.receive(RAN_Conn_Prim:MSC_CONN_PRIM_CONF_IND);
/* The RSL Emulation magically accepts the Chan Activ behind the scenes. */
var PDU_BSSAP rx_bssap;
var octetstring ho_command_str;
BSSAP.receive(tr_BSSMAP_HandoverRequestAcknowledge(?)) -> value rx_bssap;
ho_command_str := rx_bssap.pdu.bssmap.handoverRequestAck.layer3Information.layer3info;
log("Received L3 Info in HO Request Ack: ", ho_command_str);
var PDU_ML3_NW_MS ho_command := dec_PDU_ML3_NW_MS(ho_command_str);
log("L3 Info in HO Request Ack is ", ho_command);
var GsmArfcn arfcn;
var RslChannelNr actual_new_chan_nr;
f_ChDesc2RslChanNr(ho_command.msgs.rrm.handoverCommand.channelDescription2,
actual_new_chan_nr, arfcn);
if (actual_new_chan_nr != new_chan_nr) {
log("ERROR: osmo-bsc assigned a different lchan than we assumed above -- this test will fail now.",
" Assumed: ", new_chan_nr, " Assigned: ", actual_new_chan_nr);
setverdict(fail);
return;
}
log("Handover Command chan_nr is", actual_new_chan_nr);
/* Now the MSC forwards the RR Handover Command to the other BSC, which
* tells the MS to handover to the new lchan. But the MS never shows up
* on the new lchan. */
BSSAP.receive(tr_BSSMAP_HandoverFailure);
/* MSC plays dumb and sends no Clear Command */
var PDU_BSSAP rx_clear_request;
BSSAP.receive(tr_BSSMAP_ClearRequest) -> value rx_clear_request {
var BssmapCause cause := bit2int(rx_clear_request.pdu.bssmap.clearRequest.cause.causeValue);
BSSAP.send(ts_BSSMAP_ClearCommand(cause));
};
f_expect_dlcx_conns();
setverdict(pass);
f_sleep(1.0);
}
testcase TC_ho_in_fail_no_detect2() 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);
pars.sccp_addr_msc := g_bssap[0].sccp_addr_own;
pars.sccp_addr_bsc := g_bssap[0].sccp_addr_peer;
vc_conn := f_start_handler(refers(f_tc_ho_in_fail_no_detect2), pars);
vc_conn.done;
}
type record of charstring Commands;
private function f_bts_0_cfg(TELNETasp_PT pt, Commands cmds := {})
{
f_vty_enter_cfg_bts(pt, 0);
for (var integer i := 0; i < sizeof(cmds); i := i+1) {
f_vty_transceive(pt, cmds[i]);
}
f_vty_transceive(pt, "end");
}
private function f_cs7_inst_0_cfg(TELNETasp_PT pt, Commands cmds := {})
{
f_vty_enter_cfg_cs7_inst(pt, 0);
for (var integer i := 0; i < sizeof(cmds); i := i+1) {
f_vty_transceive(pt, cmds[i]);
}
f_vty_transceive(pt, "end");
}
private function f_probe_for_handover(charstring log_label,
charstring log_descr,
charstring handover_vty_cmd,
boolean expect_handover,
boolean is_inter_bsc_handover := false)
runs on MSC_ConnHdlr
{
/* We're going to thwart any and all handover attempts, just be ready to handle (and ignore) handover target
* lchans to be established on bts 1 or bts 2. */
f_rslem_suspend(RSL1_PROC);
f_rslem_suspend(RSL2_PROC);
var RSL_Message rsl;
var charstring log_msg := " (expecting handover)"
if (not expect_handover) {
log_msg := " (expecting NO handover)";
}
log("f_probe_for_handover starting: " & log_label & ": " & log_descr & log_msg);
f_vty_transceive(BSCVTY, handover_vty_cmd);
timer T := 2.0;
T.start;
alt {
[] RSL.receive(tr_RSL_DATA_REQ(g_chan_nr)) -> value rsl {
var PDU_ML3_NW_MS l3 := dec_PDU_ML3_NW_MS(rsl.ies[2].body.l3_info.payload);
log("Rx L3 from net: ", l3);
if (ischosen(l3.msgs.rrm.handoverCommand)) {
var RslChannelNr new_chan_nr;
var GsmArfcn arfcn;
f_ChDesc2RslChanNr(l3.msgs.rrm.handoverCommand.channelDescription2,
new_chan_nr, arfcn);
log("Handover to new chan ", new_chan_nr, " on ARFCN ", arfcn);
log(l3.msgs.rrm.handoverCommand);
/* Need to register for new lchan on new BTS -- it's either bts 1 or bts 2. It doesn't really
* matter on which BTS it really is, we're not going to follow through an entire handover
* anyway. */
f_rslem_register(0, new_chan_nr, RSL1_PROC);
f_rslem_resume(RSL1_PROC);
f_rslem_register(0, new_chan_nr, RSL2_PROC);
f_rslem_resume(RSL2_PROC);
if (expect_handover and not is_inter_bsc_handover) {
setverdict(pass);
log("f_probe_for_handover(" & log_label & "): Got RSL Handover Command as expected.");
} else {
setverdict(fail, "f_probe_for_handover(" & log_label & "): Expected none, but got RSL Handover Command. "
& log_label & ": " & log_descr);
}
log("f_probe_for_handover(" & log_label & "): Ending the test: Handover Failure stops the procedure.");
/* osmo-bsc has triggered Handover. That's all we need to know for this test, reply with
* Handover Failure. */
f_rsl_send_l3(ts_RRM_HandoverFailure('00'O));
/* target BTS is told to release lchan again; don't care which BTS nor what messages. */
f_sleep(0.5);
RSL1.clear;
RSL2.clear;
log("f_probe_for_handover(" & log_label & "): done (got RSL Handover Command)");
break;
} else {
repeat;
}
}
[] BSSAP.receive(tr_BSSMAP_HandoverRequired) {
if (expect_handover and is_inter_bsc_handover) {
setverdict(pass);
log("f_probe_for_handover(" & log_label & "): Got BSSMAP Handover Required as expected.");
} else {
setverdict(fail, "f_probe_for_handover(" & log_label & "): Expected none, but got BSSMAP Handover Required. "
& log_label & ": " & log_descr);
}
log("f_probe_for_handover(" & log_label & "): done (got BSSMAP Handover Required)");
/* Note: f_tc_ho_neighbor_config_start() sets T7, the timeout for BSSMAP Handover Required, to
* 1 second. There is no legal way to quickly abort a handover after a BSSMAP Handover Required,
* setting a short timeout and waiting is the only way. */
log("f_probe_for_handover(" & log_label & "): waiting for inter-BSC HO to time out...");
f_sleep(1.5);
log("f_probe_for_handover(" & log_label & "): ...done");
break;
}
[] T.timeout {
if (expect_handover) {
setverdict(fail, "f_probe_for_handover(" & log_label & "): Expected Handover, but got none. "
& log_label & ": " & log_descr);
} else {
setverdict(pass);
log("f_probe_for_handover(" & log_label & "): Got no Handover, as expected.");
}
log("f_probe_for_handover(" & log_label & "): done (got no Handover)");
break;
}
}
f_rslem_resume(RSL1_PROC);
f_rslem_resume(RSL2_PROC);
f_sleep(3.0);
RSL.clear;
log("f_probe_for_handover(" & log_label & "): done clearing");
}
/* Test the effect of various neighbor configuration scenarios:
*
* To avoid complexity, block off any actual handover operation, and always remain on the lchan at bts 0.
* Reconfigure the neighbors for bts 0, trigger a Handover, and probe whether osmo-bsc does or doesn't start HO.
*/
private function f_tc_ho_neighbor_config_start() runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
var template PDU_BSSAP exp_compl := f_gen_exp_compl();
var PDU_BSSAP ass_cmd := f_gen_ass_req();
const OCT8 kc := '0001020304050607'O;
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
ass_cmd.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR}));
/* Establish lchan at bts 0 */
f_establish_fully(ass_cmd, exp_compl);
/* Shorten the inter-BSC Handover timeout, to not wait so long for inter-BSC Handovers */
f_vty_enter_cfg_network(BSCVTY);
f_vty_transceive(BSCVTY, "timer T7 1");
f_vty_transceive(BSCVTY, "end");
}
private function f_tc_ho_neighbor_config_1(charstring id) runs on MSC_ConnHdlr {
f_tc_ho_neighbor_config_start();
/*
* bts 0 ARFCN 871 BSIC 10
* bts 1 ARFCN 871 BSIC 11
* bts 2 ARFCN 871 BSIC 12
* bts 3 ARFCN 871 BSIC 12 serves as ambiguity for bts 2, re-using the ARFCN+BSIC
*/
log("f_tc_ho_neighbor_config: 1. No 'neighbor' config");
f_bts_0_cfg(BSCVTY, {"no neighbors"});
f_probe_for_handover("1.a", "HO to bts 1 works, implicitly listed as neighbor (legacy behavior when none are configured)",
"handover any to arfcn 871 bsic 11",
true);
f_probe_for_handover("1.b", "HO to unknown cell does not start",
"handover any to arfcn 13 bsic 39",
false);
f_probe_for_handover("1.c", "HO to 871-12 is ambiguous = error",
"handover any to arfcn 871 bsic 12",
false);
f_probe_for_handover("1.d", "HO to 871-11 still works (verify that this test properly cleans up)",
"handover any to arfcn 871 bsic 11",
true);
}
private function f_tc_ho_neighbor_config_2(charstring id) runs on MSC_ConnHdlr {
f_tc_ho_neighbor_config_start();
/*
* bts 0 ARFCN 871 BSIC 10
* bts 1 ARFCN 871 BSIC 11
* bts 2 ARFCN 871 BSIC 12
* bts 3 ARFCN 871 BSIC 12 serves as ambiguity for bts 2, re-using the ARFCN+BSIC
*/
log("f_tc_ho_neighbor_config: 2. explicit local neighbor: 'neighbor bts 1'");
f_bts_0_cfg(BSCVTY, {"neighbor bts 1"});
f_sleep(0.5);
f_probe_for_handover("2.a", "HO to bts 1 works, explicitly listed as neighbor",
"handover any to arfcn 871 bsic 11",
true);
f_probe_for_handover("2.b", "HO to bts 2 doesn't work, not listed as neighbor",
"handover any to arfcn 871 bsic 12",
false);
}
private function f_tc_ho_neighbor_config_3(charstring id) runs on MSC_ConnHdlr {
f_tc_ho_neighbor_config_start();
/*
* bts 0 ARFCN 871 BSIC 10
* bts 1 ARFCN 871 BSIC 11
* bts 2 ARFCN 871 BSIC 12
* bts 3 ARFCN 871 BSIC 12 serves as ambiguity for bts 2, re-using the ARFCN+BSIC
*/
log("f_tc_ho_neighbor_config: 3. explicit local neighbor: 'neighbor bts 2'");
f_bts_0_cfg(BSCVTY, {"no neighbors", "neighbor bts 2"});
f_sleep(0.5);
f_probe_for_handover("3.a", "HO to bts 1 doesn't work, not listed as neighbor",
"handover any to arfcn 871 bsic 11",
false);
f_probe_for_handover("3.b", "HO to bts 2 works, explicitly listed as neighbor; no ambiguity because bts 3 is not listed as neighbor",
"handover any to arfcn 871 bsic 12",
true);
}
private function f_tc_ho_neighbor_config_4(charstring id) runs on MSC_ConnHdlr {
f_tc_ho_neighbor_config_start();
/*
* bts 0 ARFCN 871 BSIC 10
* bts 1 ARFCN 871 BSIC 11
* bts 2 ARFCN 871 BSIC 12
* bts 3 ARFCN 871 BSIC 12 serves as ambiguity for bts 2, re-using the ARFCN+BSIC
*/
log("f_tc_ho_neighbor_config: 4. explicit remote neighbor: 'neighbor lac 99 arfcn 123 bsic 45'");
f_bts_0_cfg(BSCVTY, {"no neighbors", "neighbor lac 99 arfcn 123 bsic 45"});
f_sleep(0.5);
f_probe_for_handover("4.a", "HO to bts 1 doesn't work, not listed as neighbor",
"handover any to arfcn 871 bsic 11",
false);
f_probe_for_handover("4.b", "HO to bts 2 doesn't work, not listed as neighbor",
"handover any to arfcn 871 bsic 12",
false);
f_probe_for_handover("4.c", "HO to 123-45 triggers inter-BSC HO",
"handover any to arfcn 123 bsic 45",
true, true);
}
private function f_tc_ho_neighbor_config_5(charstring id) runs on MSC_ConnHdlr {
f_tc_ho_neighbor_config_start();
/*
* bts 0 ARFCN 871 BSIC 10
* bts 1 ARFCN 871 BSIC 11
* bts 2 ARFCN 871 BSIC 12
* bts 3 ARFCN 871 BSIC 12 serves as ambiguity for bts 2, re-using the ARFCN+BSIC
*/
log("f_tc_ho_neighbor_config: 5. explicit remote neighbor re-using ARFCN+BSIC: 'neighbor lac 99 arfcn 871 bsic 12'");
f_bts_0_cfg(BSCVTY, {"no neighbors", "neighbor lac 99 arfcn 871 bsic 12"});
f_sleep(0.5);
f_probe_for_handover("5.a", "HO to 871-12 triggers inter-BSC HO (ignoring local cells with same ARFCN+BSIC)",
"handover any to arfcn 871 bsic 12",
true, true);
}
private function f_tc_ho_neighbor_config_6(charstring id) runs on MSC_ConnHdlr {
f_tc_ho_neighbor_config_start();
/*
* bts 0 ARFCN 871 BSIC 10
* bts 1 ARFCN 871 BSIC 11
* bts 2 ARFCN 871 BSIC 12
* bts 3 ARFCN 871 BSIC 12 serves as ambiguity for bts 2, re-using the ARFCN+BSIC
*/
log("f_tc_ho_neighbor_config: 6. config error: explicit local and remote neighbors with ambiguous ARFCN+BSIC:"
& " 'neighbor bts 2; neighbor lac 99 arfcn 871 bsic 12'");
f_bts_0_cfg(BSCVTY, {"no neighbors", "neighbor bts 2", "neighbor lac 99 arfcn 871 bsic 12"});
f_sleep(0.5);
f_probe_for_handover("6.a", "HO to 871-12 is ambiguous = error",
"handover any to arfcn 871 bsic 12",
false);
}
private function f_tc_ho_neighbor_config_7(charstring id) runs on MSC_ConnHdlr {
f_tc_ho_neighbor_config_start();
/*
* bts 0 ARFCN 871 BSIC 10
* bts 1 ARFCN 871 BSIC 11
* bts 2 ARFCN 871 BSIC 12
* bts 3 ARFCN 871 BSIC 12 serves as ambiguity for bts 2, re-using the ARFCN+BSIC
*/
log("f_tc_ho_neighbor_config: 7. explicit local and remote neighbors:"
& " 'neighbor bts 2; neighbor lac 99 arfcn 123 bsic 45'");
f_bts_0_cfg(BSCVTY, {"no neighbors", "neighbor bts 2", "neighbor lac 99 arfcn 123 bsic 45"});
f_sleep(0.5);
f_probe_for_handover("7.a", "HO to 871-12 does HO to bts 2",
"handover any to arfcn 871 bsic 12",
true);
f_probe_for_handover("7.b", "HO to 123-45 triggers inter-BSC HO",
"handover any to arfcn 123 bsic 45",
true, true);
}
testcase TC_ho_neighbor_config_1() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(3, true, guard_timeout := 60.0);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_ho_neighbor_config_1));
vc_conn.done;
}
testcase TC_ho_neighbor_config_2() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(3, true, guard_timeout := 50.0);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_ho_neighbor_config_2));
vc_conn.done;
}
testcase TC_ho_neighbor_config_3() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(3, true, guard_timeout := 50.0);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_ho_neighbor_config_3));
vc_conn.done;
}
testcase TC_ho_neighbor_config_4() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(3, true, guard_timeout := 50.0);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_ho_neighbor_config_4));
vc_conn.done;
}
testcase TC_ho_neighbor_config_5() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(3, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_ho_neighbor_config_5));
vc_conn.done;
}
testcase TC_ho_neighbor_config_6() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(3, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_ho_neighbor_config_6));
vc_conn.done;
}
testcase TC_ho_neighbor_config_7() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(3, true, guard_timeout := 50.0);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_ho_neighbor_config_7));
vc_conn.done;
}
/* OS#3041: Open and close N connections in a normal fashion, and expect no
* BSSMAP Reset just because of that. */
testcase TC_bssap_rlsd_does_not_cause_bssmap_reset() runs on test_CT {
var default d;
var integer i;
var DchanTuple dt;
f_init();
/* Wait for initial BSSMAP Reset to pass */
f_sleep(4.0);
d := activate(no_bssmap_reset());
/* Setup up a number of connections and RLSD them again from the MSC
* side. In the buggy behavior, the fourth one triggers BSSMAP Reset.
* Let's do it some more times for good measure. */
for (i := 0; i < 4; i := i+1) {
/* Since we're doing a lot of runs, give each one a fresh
* T_guard from the top. */
T_guard.start;
/* Setup a BSSAP connection and clear it right away. This is
* the MSC telling the BSC about a planned release, it's not an
* erratic loss of a connection. */
dt := f_est_dchan(int2oct(i,1), 23+i, '00010203040506'O);
/* MSC disconnects (RLSD). */
BSSAP.send(ts_BSSAP_DISC_req(dt.sccp_conn_id, 0));
}
/* In the buggy behavior, a timeout of 2 seconds happens between above
* trigger (logs "SIGTRAN connection down, reconnecting...") and the
* actual BSSMAP Reset. Wait a bit longer just to make sure. */
f_sleep(4.0);
deactivate(d);
f_shutdown_helper();
}
/* OS#3041: Open and close N connections in a normal fashion, and expect no
* BSSMAP Reset just because of that. Invoke the release by a BSSMAP Clear from
* the MSC. */
testcase TC_bssmap_clear_does_not_cause_bssmap_reset() runs on test_CT {
var default d;
var integer i;
var DchanTuple dt;
var BSSAP_N_DATA_ind rx_di;
var myBSSMAP_Cause cause_val := GSM0808_CAUSE_CALL_CONTROL;
var BssmapCause cause := enum2int(cause_val);
f_init();
/* Wait for initial BSSMAP Reset to pass */
f_sleep(4.0);
d := activate(no_bssmap_reset());
/* Setup up a number of connections and RLSD them again from the MSC
* side. In the buggy behavior, the fourth one triggers BSSMAP Reset.
* Let's do it some more times for good measure. */
for (i := 0; i < 8; i := i+1) {
/* Since we're doing a lot of runs, give each one a fresh
* T_guard from the top. */
T_guard.start;
/* Setup a BSSAP connection and clear it right away. This is
* the MSC telling the BSC about a planned release, it's not an
* erratic loss of a connection. */
dt := f_est_dchan(int2oct(i,1), 23+i, '00010203040506'O);
/* Instruct BSC to clear channel */
BSSAP.send(ts_BSSAP_DATA_req(dt.sccp_conn_id, ts_BSSMAP_ClearCommand(cause)));
/* expect BSC to disable the channel */
f_exp_chan_rel_and_clear(dt, 0);
}
/* In the buggy behavior, a timeout of 2 seconds happens between above
* trigger (logs "SIGTRAN connection down, reconnecting...") and the
* actual BSSMAP Reset. Wait a bit longer just to make sure. */
f_sleep(4.0);
deactivate(d);
f_shutdown_helper();
}
/* OS#3041: Open and close N connections in a normal fashion, and expect no
* BSSMAP Reset just because of that. Close connections from the MS side with a
* Release Ind on RSL. */
testcase TC_ms_rel_ind_does_not_cause_bssmap_reset() runs on test_CT {
var default d;
var integer i;
var DchanTuple dt;
var BSSAP_N_DATA_ind rx_di;
var integer j;
f_init();
/* Wait for initial BSSMAP Reset to pass */
f_sleep(4.0);
d := activate(no_bssmap_reset());
/* Setup up a number of connections and RLSD them again from the MSC
* side. In the buggy behavior, the fourth one triggers BSSMAP Reset.
* Let's do it some more times for good measure. */
for (i := 0; i < 8; i := i+1) {
/* Since we're doing a lot of runs, give each one a fresh
* T_guard from the top. */
T_guard.start;
/* Setup a BSSAP connection and clear it right away. This is
* the MSC telling the BSC about a planned release, it's not an
* erratic loss of a connection. */
dt := f_est_dchan('23'O, 23, '00010203040506'O);
/* simulate RLL REL IND */
f_ipa_tx(0, ts_RSL_REL_IND(dt.rsl_chan_nr, valueof(ts_RslLinkID_DCCH(0))));
/* expect Clear Request on MSC side */
BSSAP.receive(tr_BSSAP_DATA_ind(dt.sccp_conn_id, tr_BSSMAP_ClearRequest)) -> value rx_di;
/* Instruct BSC to clear channel */
var BssmapCause cause := bit2int(rx_di.userData.pdu.bssmap.clearRequest.cause.causeValue);
BSSAP.send(ts_BSSAP_DATA_req(dt.sccp_conn_id, ts_BSSMAP_ClearCommand(cause)));
/* expect BSC to disable the channel */
f_exp_chan_rel_and_clear(dt, 0);
}
/* In the buggy behavior, a timeout of 2 seconds happens between above
* trigger (logs "SIGTRAN connection down, reconnecting...") and the
* actual BSSMAP Reset. Wait a bit longer just to make sure. */
f_sleep(4.0);
deactivate(d);
f_shutdown_helper();
}
/***********************************************************************
* IPA style dynamic PDCH
***********************************************************************/
private function f_dyn_ipa_pdch_act(integer bts_nr, integer trx_nr, integer ts_nr,
template (omit) RSL_Cause nack := omit)
runs on test_CT {
var RslChannelNr chan_nr := valueof(t_RslChanNr_Bm(ts_nr));
var RSL_Message rsl_unused;
/* ask BSC via VTY to activate a given IPA style chan as PDCH */
f_vty_ts_action("pdch activate", bts_nr, trx_nr, ts_nr);
/* expect the BSC to issue the related RSL command */
rsl_unused := f_exp_ipa_rx(0, tr_RSL_IPA_PDCH_ACT(chan_nr));
if (istemplatekind(nack, "omit")) {
/* respond with a related acknowledgement */
f_ipa_tx(0, ts_RSL_IPA_PDCH_ACT_ACK(chan_nr, ts_RSL_IE_FrameNumber(2342)));
} else {
f_ipa_tx(0, ts_RSL_IPA_PDCH_ACT_NACK(chan_nr, valueof(nack)));
}
}
private function f_dyn_ipa_pdch_deact(integer bts_nr, integer trx_nr, integer ts_nr,
template (omit) RSL_Cause nack := omit)
runs on test_CT {
var RslChannelNr chan_nr := valueof(t_RslChanNr_Bm(ts_nr));
var RSL_Message rsl_unused;
/* ask BSC via VTY to activate a given IPA style chan as PDCH */
f_vty_ts_action("pdch deactivate", bts_nr, trx_nr, ts_nr);
/* expect the BSC to issue the related RSL command */
rsl_unused := f_exp_ipa_rx(0, tr_RSL_IPA_PDCH_DEACT(chan_nr));
if (istemplatekind(nack, "omit")) {
/* respond with a related acknowledgement */
f_ipa_tx(0, ts_RSL_IPA_PDCH_DEACT_ACK(chan_nr));
} else {
f_ipa_tx(0, ts_RSL_IPA_PDCH_DEACT_NACK(chan_nr, valueof(nack)));
}
}
private function f_ts_dyn_mode_get(integer bts_nr, integer trx_nr, integer ts_nr)
runs on test_CT return charstring {
var charstring cmd, resp;
cmd := "show timeslot "&int2str(bts_nr)&" "&int2str(trx_nr)&" "&int2str(ts_nr);
return f_vty_transceive_match_regexp_retry(BSCVTY, cmd, "*\((*)\)*", 0, 4, 1.0);
}
private function f_ts_dyn_mode_assert(integer bts_nr, integer trx_nr, integer ts_nr,
template charstring exp)
runs on test_CT {
var charstring mode := f_ts_dyn_mode_get(bts_nr, trx_nr, ts_nr);
if (not match(mode, exp)) {
setverdict(fail, "Unexpected TS Mode: ", mode);
mtc.stop;
}
}
private function f_ts_set_chcomb(integer bts_nr, integer trx_nr, integer ts_nr, charstring chcomb)
runs on test_CT {
f_vty_enter_cfg_ts(BSCVTY, bts_nr, trx_nr, ts_nr);
f_vty_transceive(BSCVTY, "phys_chan_config " & chcomb);
f_vty_transceive(BSCVTY, "end");
}
private const charstring TCHF_MODE := "TCH/F mode";
private const charstring TCHH_MODE := "TCH/H mode";
private const charstring PDCH_MODE := "PDCH mode";
private const charstring NONE_MODE := "NONE mode";
/* Test IPA PDCH activation / deactivation triggered by VTY */
testcase TC_dyn_pdch_ipa_act_deact() runs on test_CT {
var RSL_Message rsl_unused;
/* change Timeslot 6 before f_init() starts RSL */
f_init_vty();
f_ts_set_chcomb(0, 0, 6, "TCH/F_PDCH");
f_vty_transceive(BSCVTY, "drop bts connection 0 oml");
f_init(1, false);
f_sleep(1.0);
var RslChannelNr chan_nr := valueof(t_RslChanNr_Bm(6));
log("TCH/F_PDCH pchan starts out in TCH/F mode:");
f_ts_dyn_mode_assert(0, 0, chan_nr.tn, TCHF_MODE);
/* The BSC will activate the dynamic PDCH by default, so confirm that */
rsl_unused := f_exp_ipa_rx(0, tr_RSL_IPA_PDCH_ACT(chan_nr));
f_ipa_tx(0, ts_RSL_IPA_PDCH_ACT_ACK(chan_nr, ts_RSL_IE_FrameNumber(2342)));
f_sleep(1.0);
log("TCH/F_PDCH pchan, PDCH ACT was ACKed, so now in PDCH mode:");
f_ts_dyn_mode_assert(0, 0, chan_nr.tn, PDCH_MODE);
/* De-activate it via VTY */
f_dyn_ipa_pdch_deact(0, 0, chan_nr.tn);
f_sleep(1.0);
log("TCH/F_PDCH pchan, PDCH DEACT via VTY, so now back in TCH/F mode:");
f_ts_dyn_mode_assert(0, 0, chan_nr.tn, TCHF_MODE);
/* re-activate it via VTY */
f_dyn_ipa_pdch_act(0, 0, chan_nr.tn);
f_sleep(1.0);
log("TCH/F_PDCH pchan, PDCH ACT via VTY, so now in PDCH mode:");
f_ts_dyn_mode_assert(0, 0, chan_nr.tn, PDCH_MODE);
/* and finally de-activate it again */
f_dyn_ipa_pdch_deact(0, 0, chan_nr.tn);
f_sleep(1.0);
log("TCH/F_PDCH pchan, PDCH DEACT via VTY, so now back in TCH/F mode:");
f_ts_dyn_mode_assert(0, 0, chan_nr.tn, TCHF_MODE);
/* clean up config */
f_ts_set_chcomb(0, 0, 6, "PDCH");
setverdict(pass);
}
/* Test IPA PDCH activation NACK */
testcase TC_dyn_pdch_ipa_act_nack() runs on test_CT {
var RSL_Message rsl_unused;
/* change Timeslot 6 before f_init() starts RSL */
f_init_vty();
f_ts_set_chcomb(0, 0, 6, "TCH/F_PDCH");
f_vty_transceive(BSCVTY, "drop bts connection 0 oml");
f_init(1, false);
f_sleep(1.0);
var RslChannelNr chan_nr := valueof(t_RslChanNr_Bm(6));
f_ts_dyn_mode_assert(0, 0, chan_nr.tn, TCHF_MODE);
/* The BSC will activate the dynamic PDCH by default, so confirm that */
rsl_unused := f_exp_ipa_rx(0, tr_RSL_IPA_PDCH_ACT(chan_nr));
f_ipa_tx(0, ts_RSL_IPA_PDCH_ACT_ACK(chan_nr, ts_RSL_IE_FrameNumber(2342)));
f_sleep(1.0);
f_ts_dyn_mode_assert(0, 0, chan_nr.tn, PDCH_MODE);
/* De-activate it via VTY */
f_dyn_ipa_pdch_deact(0, 0, chan_nr.tn);
f_sleep(1.0);
f_ts_dyn_mode_assert(0, 0, chan_nr.tn, TCHF_MODE);
/* re-activate it via VTY, but fail that; check BSC still assumes TCH/F mode */
f_dyn_ipa_pdch_act(0, 0, chan_nr.tn, RSL_ERR_EQUIPMENT_FAIL);
f_sleep(1.0);
f_ts_dyn_mode_assert(0, 0, chan_nr.tn, TCHF_MODE);
/* clean up config */
f_ts_set_chcomb(0, 0, 6, "PDCH");
setverdict(pass);
}
/***********************************************************************
* Osmocom style dynamic PDCH
***********************************************************************/
private function f_dyn_osmo_pdch_act(integer bts_nr, integer trx_nr, integer ts_nr,
template (omit) RSL_Cause nack := omit)
runs on test_CT {
var RslChannelNr chan_nr := valueof(t_RslChanNr_PDCH(ts_nr));
var RSL_Message rsl_unused;
/* ask BSC via VTY to activate a given IPA style chan as PDCH */
/* FIXME: no VTY command to activate Osmocom PDCH !! */
/* expect the BSC to issue the related RSL command */
rsl_unused := f_exp_ipa_rx(0, tr_RSL_CHAN_ACT(chan_nr, ?));
if (istemplatekind(nack, "omit")) {
/* respond with a related acknowledgement */
f_ipa_tx(0, ts_RSL_CHAN_ACT_ACK(chan_nr, 2342));
} else {
f_ipa_tx(0, ts_RSL_CHAN_ACT_NACK(chan_nr, valueof(nack)));
}
}
private function f_dyn_osmo_pdch_deact(integer bts_nr, integer trx_nr, integer ts_nr,
template (omit) RSL_Cause nack := omit)
runs on test_CT {
var RslChannelNr chan_nr := valueof(t_RslChanNr_PDCH(ts_nr));
var RSL_Message rsl_unused;
/* ask BSC via VTY to activate a given IPA style chan as PDCH */
/* FIXME: no VTY command to activate Osmocom PDCH !! */
/* expect the BSC to issue the related RSL command */
rsl_unused := f_exp_ipa_rx(0, tr_RSL_RF_CHAN_REL(chan_nr));
if (istemplatekind(nack, "omit")) {
/* respond with a related acknowledgement */
f_ipa_tx(0, ts_RSL_RF_CHAN_REL_ACK(chan_nr));
} else {
//f_ipa_tx(0, ts_RSL_RF_CHAN_REL_NACK(chan_nr, valueof(nack)));
}
}
/* Test Osmocom dyn PDCH activation / deactivation triggered by VTY */
testcase TC_dyn_pdch_osmo_act_deact() runs on test_CT {
var RSL_Message rsl_unused;
/* change Timeslot 6 before f_init() starts RSL */
f_init_vty();
f_ts_set_chcomb(0, 0, 6, "TCH/F_TCH/H_PDCH");
f_vty_transceive(BSCVTY, "drop bts connection 0 oml");
f_init(1, false);
f_sleep(1.0);
var RslChannelNr chan_nr := valueof(t_RslChanNr_PDCH(6));
log("TCH/F_TCH/H_PDCH pchan starts out in disabled mode:");
f_ts_dyn_mode_assert(0, 0, chan_nr.tn, NONE_MODE);
/* The BSC will activate the dynamic PDCH by default, so confirm that */
rsl_unused := f_exp_ipa_rx(0, tr_RSL_CHAN_ACT_PDCH(chan_nr, ?));
f_ipa_tx(0, ts_RSL_CHAN_ACT_ACK(chan_nr, 2342));
f_sleep(1.0);
log("TCH/F_TCH/H_PDCH requested to PDCH ACT on startup, which was ACKed, so now in PDCH:");
f_ts_dyn_mode_assert(0, 0, chan_nr.tn, PDCH_MODE);
/* clean up config */
f_ts_set_chcomb(0, 0, 6, "PDCH");
setverdict(pass);
}
/* Test Osmocom dyn PDCH activation NACK behavior */
testcase TC_dyn_pdch_osmo_act_nack() runs on test_CT {
var RSL_Message rsl_unused;
/* change Timeslot 6 before f_init() starts RSL */
f_init_vty();
f_ts_set_chcomb(0, 0, 6, "TCH/F_TCH/H_PDCH");
f_vty_transceive(BSCVTY, "drop bts connection 0 oml");
f_init(1, false);
f_sleep(1.0);
var RslChannelNr chan_nr := valueof(t_RslChanNr_PDCH(6));
f_ts_dyn_mode_assert(0, 0, chan_nr.tn, NONE_MODE);
/* The BSC will activate the dynamic PDCH by default, so confirm that */
rsl_unused := f_exp_ipa_rx(0, tr_RSL_CHAN_ACT_PDCH(chan_nr, ?));
/* NACK this activation and expect the "show timeslot" mode still to be NONE */
f_ipa_tx(0, ts_RSL_CHAN_ACT_NACK(chan_nr, RSL_ERR_EQUIPMENT_FAIL));
f_sleep(1.0);
f_ts_dyn_mode_assert(0, 0, chan_nr.tn, NONE_MODE);
/* clean up config */
f_ts_set_chcomb(0, 0, 6, "PDCH");
setverdict(pass);
}
testcase TC_chopped_ipa_ping() runs on test_CT {
const Integers bsc_ipa_ports := {mp_bsc_rsl_port, mp_bsc_oml_port, mp_bsc_ctrl_port};
for (var integer i := 0; i < lengthof(bsc_ipa_ports); i := i + 1) {
IPA_Testing.f_run_TC_chopped_ipa_ping(mp_bsc_ip, bsc_ipa_ports[i], CONNECT_TO_SERVER);
}
}
testcase TC_chopped_ipa_payload() runs on test_CT {
const Integers bsc_ipa_ports := {mp_bsc_rsl_port, mp_bsc_oml_port
/* TODO: mp_bsc_ctrl_port does not work yet */};
for (var integer i := 0; i < lengthof(bsc_ipa_ports); i := i + 1) {
IPA_Testing.f_run_TC_chopped_ipa_payload(mp_bsc_ip, bsc_ipa_ports[i], CONNECT_TO_SERVER);
}
}
/* Verify the BSC sends the MS Power Parameters IE during CHAN ACT to make sure
the BTS does autonomous MS power control loop */
testcase TC_assignment_verify_ms_power_params_ie() runs on test_CT {
var MSC_ConnHdlr vc_conn;
var TestHdlrParams pars := f_gen_test_hdlr_pars();
//pars.encr := valueof(t_EncrParams('01'O, f_rnd_octstring(8)));
pars.exp_ms_power_params := true;
f_init(1, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_assignment_fr_a5), pars);
vc_conn.done;
}
/***********************************************************************
* MSC Pooling
***********************************************************************/
function f_tmsi_nri(integer nri_v, octetstring base_tmsi := '42000023'O, integer nri_bitlen := 10) return octetstring
{
return int2oct( oct2int(base_tmsi) + bit2int( (int2bit(nri_v, 32) << ( 24 - nri_bitlen)) ),
4);
}
template MobileIdentityLV ts_MI_TMSI_NRI_LV(integer nri_v, integer nri_bitlen := 10) :=
ts_MI_TMSI_LV(tmsi := f_tmsi_nri(nri_v, nri_bitlen := nri_bitlen));
private function f_perform_clear(RSL_DCHAN_PT rsl) runs on MSC_ConnHdlr {
f_logp("MSC instructs BSC to clear channel");
BSSAP.send(ts_BSSMAP_ClearCommand(0));
interleave {
[] rsl.receive(tr_RSL_DATA_REQ(g_chan_nr, ?, decmatch tr_RRM_RR_RELEASE)) {
f_logp("Got RSL RR Release");
}
[] rsl.receive(tr_RSL_DEACT_SACCH(g_chan_nr)) {
f_logp("Got RSL Deact SACCH");
}
[] BSSAP.receive(tr_BSSMAP_ClearComplete) {
f_logp("Got BSSMAP Clear Complete");
/* Also drop the SCCP connection */
BSSAP.send(RAN_Conn_Prim:MSC_CONN_PRIM_DISC_REQ);
}
[] rsl.receive(tr_RSL_MsgTypeD(RSL_MT_RF_CHAN_REL)) {
f_logp("Got RSL RF Chan Rel, sending Rel Ack");
rsl.send(ts_RSL_RF_CHAN_REL_ACK(g_chan_nr));
}
}
}
private function f_perform_compl_l3(RSL_DCHAN_PT rsl, template PDU_ML3_MS_NW l3_info, boolean do_clear := true)
runs on MSC_ConnHdlr {
timer T := 10.0;
var octetstring l3_enc := enc_PDU_ML3_MS_NW(valueof(l3_info));
f_logp("establish channel, send Complete Layer 3 Info");
f_create_bssmap_exp(l3_enc);
/* RSL_Emulation.f_chan_est() on rsl:
* This is basically code dup with s/RSL/rsl from:
* RSL_Emulation.f_chan_est(g_pars.ra, l3_enc, g_pars.link_id, g_pars.fn);
*/
var RSL_Message rx_rsl;
var GsmRrMessage rr;
/* request a channel to be established */
rsl.send(ts_RSLDC_ChanRqd(g_pars.ra, g_pars.fn));
/* expect immediate assignment.
* Code dup with s/RSL/rsl from:
* rx_rsl := f_rx_or_fail(tr_RSL_IMM_ASSIGN);
*/
timer Tt := 10.0;
/* request a channel to be established */
Tt.start;
alt {
[] rsl.receive(tr_RSL_IMM_ASSIGN) -> value rx_rsl {
Tt.stop;
}
[] rsl.receive {
setverdict(fail, "Unexpected RSL message on DCHAN");
mtc.stop;
}
[] Tt.timeout {
setverdict(fail, "Timeout waiting for RSL on DCHAN");
mtc.stop;
}
}
rr := dec_GsmRrMessage(rx_rsl.ies[1].body.full_imm_ass_info.payload);
g_chan_nr := rr.payload.imm_ass.chan_desc.chan_nr;
rsl.send(ts_RSL_EST_IND(g_chan_nr, valueof(g_pars.link_id), l3_enc));
f_logp("expect BSSAP Complete Layer 3 Info at MSC");
var template PDU_BSSAP exp_l3_compl;
exp_l3_compl := tr_BSSMAP_ComplL3()
if (g_pars.aoip == false) {
exp_l3_compl.pdu.bssmap.completeLayer3Information.codecList := omit;
} else {
exp_l3_compl.pdu.bssmap.completeLayer3Information.codecList := ?;
}
var PDU_BSSAP bssap;
T.start;
alt {
[] BSSAP.receive(exp_l3_compl) -> value bssap {
f_logp("received expected Complete Layer 3 Info at MSC");
log("rx exp_l3_compl = ", bssap);
}
[] BSSAP.receive(tr_BSSMAP_ComplL3) {
Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, "Received non-matching COMPLETE LAYER 3 INFORMATION");
}
[] T.timeout {
Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, "Timeout waiting for COMPLETE LAYER 3 INFORMATION");
}
}
/* start ciphering, if requested */
if (ispresent(g_pars.encr)) {
f_logp("start ciphering");
f_cipher_mode(g_pars.encr.enc_alg, g_pars.encr.enc_key);
}
if (do_clear) {
f_perform_clear(rsl);
}
setverdict(pass);
f_sleep(1.0);
}
private function f_tc_mscpool_compl_l3(charstring id) runs on MSC_ConnHdlr {
f_MscConnHdlr_init(g_pars.media_nr, "127.0.0.2", "127.0.0.3", FR_AMR);
if (g_pars.mscpool.rsl_idx == 0) {
f_perform_compl_l3(RSL, g_pars.mscpool.l3_info);
} else if (g_pars.mscpool.rsl_idx == 1) {
f_perform_compl_l3(RSL1, g_pars.mscpool.l3_info);
} else if (g_pars.mscpool.rsl_idx == 2) {
f_perform_compl_l3(RSL2, g_pars.mscpool.l3_info);
}
}
/* Various Complete Layer 3 by IMSI all end up with the first MSC, because the other MSCs are not connected. */
private function f_tc_mscpool_L3Compl_on_1_msc(charstring id) runs on MSC_ConnHdlr {
f_MscConnHdlr_init(g_pars.media_nr, "127.0.0.2", "127.0.0.3", FR_AMR);
f_perform_compl_l3(RSL, ts_LU_REQ(LU_Type_IMSI_Attach, valueof(ts_MI_IMSI_LV('001010000000001'H)), '00F110'O) );
f_perform_compl_l3(RSL, ts_CM_SERV_REQ(CM_TYPE_MO_SMS, valueof(ts_MI_IMSI_LV('001010000000002'H))) );
f_perform_compl_l3(RSL, ts_PAG_RESP(valueof(ts_MI_IMSI_LV('001010000000003'H))) );
f_perform_compl_l3(RSL, ts_ML3_MO_MM_IMSI_DET_Ind(valueof(ts_MI_IMSI_LV('001010000000004'H))) );
}
testcase TC_mscpool_L3Compl_on_1_msc() runs on test_CT {
f_init(1, true);
f_sleep(1.0);
var MSC_ConnHdlr vc_conn;
var TestHdlrParams pars := f_gen_test_hdlr_pars();
f_ctrs_msc_init();
vc_conn := f_start_handler(refers(f_tc_mscpool_L3Compl_on_1_msc), pars);
vc_conn.done;
f_ctrs_msc_expect(0, "mscpool:subscr:new", 4);
}
/* Three Layer 3 Complete by IMSI are round-robin'ed across two connected MSCs */
/* FIXME: each run is using a separate RSLem: RSL, RSL1, RSL2. It should work
* just as well using only RSL. */
testcase TC_mscpool_L3Complete_by_imsi_round_robin() runs on test_CT {
f_init(nr_bts := 3, handler_mode := true, nr_msc := 2);
f_sleep(1.0);
/* Control which MSC gets chosen next by the round-robin, otherwise
* would be randomly affected by which other tests ran before this. */
f_vty_transceive(BSCVTY, "mscpool roundrobin next 0");
f_ctrs_msc_init();
var MSC_ConnHdlr vc_conn1;
var TestHdlrParams pars1 := f_gen_test_hdlr_pars(bssap_idx := 0);
pars1.mscpool.rsl_idx := 0;
pars1.mscpool.l3_info := valueof(ts_LU_REQ(LU_Type_IMSI_Attach, valueof(ts_MI_IMSI_LV('001010000000001'H)), '00F110'O));
vc_conn1 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars1);
vc_conn1.done;
f_ctrs_msc_expect(0, "mscpool:subscr:new");
var MSC_ConnHdlr vc_conn2;
var TestHdlrParams pars2 := f_gen_test_hdlr_pars(bssap_idx := 1);
pars2.mscpool.rsl_idx := 1;
pars2.mscpool.l3_info := valueof(ts_CM_SERV_REQ(CM_TYPE_MO_CALL, valueof(ts_MI_IMSI_LV('001010000000002'H))));
vc_conn2 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars2);
vc_conn2.done;
f_ctrs_msc_expect(1, "mscpool:subscr:new");
/* Test round-robin wrap to the first MSC */
var MSC_ConnHdlr vc_conn3;
var TestHdlrParams pars3 := f_gen_test_hdlr_pars(bssap_idx := 0);
pars3.mscpool.rsl_idx := 2;
pars3.mscpool.l3_info := valueof(ts_PAG_RESP(valueof(ts_MI_IMSI_LV('001010000000003'H))));
vc_conn3 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars3);
vc_conn3.done;
f_ctrs_msc_expect(0, "mscpool:subscr:new");
}
/* Three LU by TMSI are round-robin'ed across two connected MSCs, because they contain the NULL-NRI 0
* (configured in osmo-bsc.cfg). */
/* FIXME: each run is using a separate RSLem: RSL, RSL1, RSL2. It should work
* just as well using only RSL. */
testcase TC_mscpool_LU_by_tmsi_null_nri_0_round_robin() runs on test_CT {
f_init(nr_bts := 3, handler_mode := true, nr_msc := 2);
f_sleep(1.0);
/* Control which MSC gets chosen next by the round-robin, otherwise
* would be randomly affected by which other tests ran before this. */
f_vty_transceive(BSCVTY, "mscpool roundrobin next 0");
f_ctrs_msc_init();
var MSC_ConnHdlr vc_conn1;
var TestHdlrParams pars1 := f_gen_test_hdlr_pars(bssap_idx := 0);
pars1.mscpool.rsl_idx := 0;
pars1.mscpool.l3_info := valueof(ts_LU_REQ(LU_Type_IMSI_Attach, valueof(ts_MI_TMSI_NRI_LV(0)), '00F110'O));
vc_conn1 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars1);
vc_conn1.done;
f_ctrs_msc_expect(0, "mscpool:subscr:reattach");
var MSC_ConnHdlr vc_conn2;
var TestHdlrParams pars2 := f_gen_test_hdlr_pars(bssap_idx := 1);
pars2.mscpool.rsl_idx := 1;
pars2.mscpool.l3_info := valueof(ts_LU_REQ(LU_Type_IMSI_Attach, valueof(ts_MI_TMSI_NRI_LV(0)), '00F110'O));
vc_conn2 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars2);
vc_conn2.done;
f_ctrs_msc_expect(1, "mscpool:subscr:reattach");
/* Test round-robin wrap to the first MSC */
var MSC_ConnHdlr vc_conn3;
var TestHdlrParams pars3 := f_gen_test_hdlr_pars(bssap_idx := 0);
pars3.mscpool.rsl_idx := 2;
pars3.mscpool.l3_info := valueof(ts_LU_REQ(LU_Type_IMSI_Attach, valueof(ts_MI_TMSI_NRI_LV(0)), '00F110'O));
vc_conn3 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars3);
vc_conn3.done;
f_ctrs_msc_expect(0, "mscpool:subscr:reattach");
}
/* Three LU by TMSI are round-robin'ed across two connected MSCs, because they contain the NULL-NRI 1
* (configured in osmo-bsc.cfg). In this case, one of the MSC also has the NULL-NRI as part of its owned NRIs, but the
* NULL-NRI setting is stronger than that. */
/* FIXME: each run is using a separate RSLem: RSL, RSL1, RSL2. It should work
* just as well using only RSL. */
testcase TC_mscpool_LU_by_tmsi_null_nri_1_round_robin() runs on test_CT {
f_init(nr_bts := 3, handler_mode := true, nr_msc := 2);
f_sleep(1.0);
/* Control which MSC gets chosen next by the round-robin, otherwise
* would be randomly affected by which other tests ran before this. */
f_vty_transceive(BSCVTY, "mscpool roundrobin next 0");
f_ctrs_msc_init();
var MSC_ConnHdlr vc_conn1;
var TestHdlrParams pars1 := f_gen_test_hdlr_pars(bssap_idx := 0);
pars1.mscpool.rsl_idx := 0;
pars1.mscpool.l3_info := valueof(ts_LU_REQ(LU_Type_IMSI_Attach, valueof(ts_MI_TMSI_NRI_LV(1)), '00F110'O));
vc_conn1 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars1);
vc_conn1.done;
f_ctrs_msc_expect(0, "mscpool:subscr:reattach");
var MSC_ConnHdlr vc_conn2;
var TestHdlrParams pars2 := f_gen_test_hdlr_pars(bssap_idx := 1);
pars2.mscpool.rsl_idx := 1;
pars2.mscpool.l3_info := valueof(ts_LU_REQ(LU_Type_IMSI_Attach, valueof(ts_MI_TMSI_NRI_LV(1)), '00F110'O));
vc_conn2 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars2);
vc_conn2.done;
f_ctrs_msc_expect(1, "mscpool:subscr:reattach");
/* Test round-robin wrap to the first MSC */
var MSC_ConnHdlr vc_conn3;
var TestHdlrParams pars3 := f_gen_test_hdlr_pars(bssap_idx := 0);
pars3.mscpool.rsl_idx := 2;
pars3.mscpool.l3_info := valueof(ts_LU_REQ(LU_Type_IMSI_Attach, valueof(ts_MI_TMSI_NRI_LV(1)), '00F110'O));
vc_conn3 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars3);
vc_conn3.done;
f_ctrs_msc_expect(0, "mscpool:subscr:reattach");
}
/* Three Layer 3 Complete by TMSI are round-robin'ed across two connected MSCs, because they contain an NRI not
* assigned to any MSC (configured in osmo-bsc.cfg). */
/* FIXME: each run is using a separate RSLem: RSL, RSL1, RSL2. It should work
* just as well using only RSL. */
testcase TC_mscpool_L3Complete_by_tmsi_unassigned_nri_round_robin() runs on test_CT {
f_init(nr_bts := 3, handler_mode := true, nr_msc := 2);
f_sleep(1.0);
/* Control which MSC gets chosen next by the round-robin, otherwise
* would be randomly affected by which other tests ran before this. */
f_vty_transceive(BSCVTY, "mscpool roundrobin next 0");
f_ctrs_msc_init();
var MSC_ConnHdlr vc_conn1;
var TestHdlrParams pars1 := f_gen_test_hdlr_pars(bssap_idx := 0);
pars1.mscpool.rsl_idx := 0;
/* An NRI that is not assigned to any MSC */
pars1.mscpool.l3_info := valueof(ts_ML3_MO_MM_IMSI_DET_Ind(valueof(ts_MI_TMSI_NRI_LV(1023))));
vc_conn1 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars1);
vc_conn1.done;
f_ctrs_msc_expect(0, "mscpool:subscr:new");
var MSC_ConnHdlr vc_conn2;
var TestHdlrParams pars2 := f_gen_test_hdlr_pars(bssap_idx := 1);
pars2.mscpool.rsl_idx := 1;
/* An NRI that is not assigned to any MSC */
pars2.mscpool.l3_info := valueof(ts_LU_REQ(LU_Type_IMSI_Attach, valueof(ts_MI_TMSI_NRI_LV(768)), '00F110'O));
vc_conn2 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars2);
vc_conn2.done;
f_ctrs_msc_expect(1, "mscpool:subscr:new");
/* Test round-robin wrap to the first MSC */
var MSC_ConnHdlr vc_conn3;
var TestHdlrParams pars3 := f_gen_test_hdlr_pars(bssap_idx := 0);
pars3.mscpool.rsl_idx := 2;
/* An NRI that is not assigned to any MSC */
pars3.mscpool.l3_info := valueof(ts_CM_SERV_REQ(CM_TYPE_SS_ACT, valueof(ts_MI_TMSI_NRI_LV(819))));
vc_conn3 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars3);
vc_conn3.done;
f_ctrs_msc_expect(0, "mscpool:subscr:new");
}
/* Three Layer 3 Complete by TMSI are round-robin'ed across two connected MSCs, because they contain an NRI
* assigned to an MSC that is currently not connected (configured in osmo-bsc.cfg). */
/* FIXME: each run is using a separate RSLem: RSL, RSL1, RSL2. It should work
* just as well using only RSL. */
testcase TC_mscpool_L3Complete_by_tmsi_valid_nri_msc_not_connected_round_robin() runs on test_CT {
f_init(nr_bts := 3, handler_mode := true, nr_msc := 2);
f_sleep(1.0);
/* Control which MSC gets chosen next by the round-robin, otherwise
* would be randomly affected by which other tests ran before this. */
f_vty_transceive(BSCVTY, "mscpool roundrobin next 0");
f_ctrs_msc_init();
var MSC_ConnHdlr vc_conn1;
var TestHdlrParams pars1 := f_gen_test_hdlr_pars(bssap_idx := 0);
pars1.mscpool.rsl_idx := 0;
/* An NRI that is assigned to an unconnected MSC */
pars1.mscpool.l3_info := valueof(ts_PAG_RESP(valueof(ts_MI_TMSI_NRI_LV(512))));
vc_conn1 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars1);
vc_conn1.done;
f_ctrs_msc_add(2, "mscpool:subscr:attach_lost");
f_ctrs_msc_add(0, "mscpool:subscr:new");
f_ctrs_msc_verify();
var MSC_ConnHdlr vc_conn2;
var TestHdlrParams pars2 := f_gen_test_hdlr_pars(bssap_idx := 1);
pars2.mscpool.rsl_idx := 1;
/* An NRI that is assigned to an unconnected MSC */
pars2.mscpool.l3_info := valueof(ts_ML3_MO_MM_IMSI_DET_Ind(valueof(ts_MI_TMSI_NRI_LV(767))));
vc_conn2 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars2);
vc_conn2.done;
f_ctrs_msc_add(2, "mscpool:subscr:attach_lost");
f_ctrs_msc_add(1, "mscpool:subscr:new");
f_ctrs_msc_verify();
/* Test round-robin wrap to the first MSC */
var MSC_ConnHdlr vc_conn3;
var TestHdlrParams pars3 := f_gen_test_hdlr_pars(bssap_idx := 0);
pars3.mscpool.rsl_idx := 2;
/* An NRI that is assigned to an unconnected MSC */
pars3.mscpool.l3_info := valueof(ts_LU_REQ(LU_Type_IMSI_Attach, valueof(ts_MI_TMSI_NRI_LV(750)), '00F110'O));
vc_conn3 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars3);
vc_conn3.done;
f_ctrs_msc_add(2, "mscpool:subscr:attach_lost");
f_ctrs_msc_add(0, "mscpool:subscr:new");
f_ctrs_msc_verify();
}
/* Three Layer 3 Complete by TMSI with valid NRI for the second MSC are all directed to the second MSC (configured in
* osmo-bsc.cfg). */
/* FIXME: each run is using a separate RSLem: RSL, RSL1, RSL2. It should work
* just as well using only RSL. */
testcase TC_mscpool_L3Complete_by_tmsi_valid_nri_1() runs on test_CT {
f_init(nr_bts := 3, handler_mode := true, nr_msc := 2);
f_sleep(1.0);
/* All TMSIs in this test point at the second MSC, set the round robin to point at the first MSC to make sure
* this is not using round-robin. */
f_vty_transceive(BSCVTY, "mscpool roundrobin next 0");
f_ctrs_msc_init();
var MSC_ConnHdlr vc_conn1;
var TestHdlrParams pars1 := f_gen_test_hdlr_pars(bssap_idx := 1);
pars1.mscpool.rsl_idx := 0;
/* An NRI of the second MSC's range (256-511) */
pars1.mscpool.l3_info := valueof(ts_CM_SERV_REQ(CM_TYPE_MO_SMS, valueof(ts_MI_TMSI_NRI_LV(256))));
vc_conn1 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars1);
vc_conn1.done;
f_ctrs_msc_expect(1, "mscpool:subscr:known");
var MSC_ConnHdlr vc_conn2;
var TestHdlrParams pars2 := f_gen_test_hdlr_pars(bssap_idx := 1);
pars2.mscpool.rsl_idx := 1;
/* An NRI of the second MSC's range (256-511) */
pars2.mscpool.l3_info := valueof(ts_PAG_RESP(valueof(ts_MI_TMSI_NRI_LV(260))));
vc_conn2 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars2);
vc_conn2.done;
f_ctrs_msc_expect(1, "mscpool:subscr:known");
var MSC_ConnHdlr vc_conn3;
var TestHdlrParams pars3 := f_gen_test_hdlr_pars(bssap_idx := 1);
pars3.mscpool.rsl_idx := 2;
/* An NRI of the second MSC's range (256-511) */
pars3.mscpool.l3_info := valueof(ts_LU_REQ(LU_Type_IMSI_Attach, valueof(ts_MI_TMSI_NRI_LV(511)), '00F110'O));
vc_conn3 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars3);
vc_conn3.done;
f_ctrs_msc_expect(1, "mscpool:subscr:known");
}
/* Layer 3 Complete by TMSI with valid NRI for the third MSC are directed to the third MSC (configured in osmo-bsc.cfg),
* while a round-robin remains unaffected by that. */
/* FIXME: each run is using a separate RSLem: RSL, RSL1, RSL2. It should work
* just as well using only RSL. */
testcase TC_mscpool_L3Complete_by_tmsi_valid_nri_2() runs on test_CT {
f_init(nr_bts := 3, handler_mode := true, nr_msc := 3);
f_sleep(1.0);
/* All TMSIs in this test point at the third MSC, set the round robin to point at the second MSC to make sure
* this is not using round-robin. */
f_vty_transceive(BSCVTY, "mscpool roundrobin next 1");
f_ctrs_msc_init();
var MSC_ConnHdlr vc_conn1;
var TestHdlrParams pars1 := f_gen_test_hdlr_pars(bssap_idx := 2);
pars1.mscpool.rsl_idx := 0;
/* An NRI of the third MSC's range (512-767) */
pars1.mscpool.l3_info := valueof(ts_CM_SERV_REQ(CM_TYPE_MO_SMS, valueof(ts_MI_TMSI_NRI_LV(512))));
vc_conn1 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars1);
vc_conn1.done;
f_ctrs_msc_expect(2, "mscpool:subscr:known");
var MSC_ConnHdlr vc_conn2;
var TestHdlrParams pars2 := f_gen_test_hdlr_pars(bssap_idx := 2);
pars2.mscpool.rsl_idx := 1;
/* An NRI of the third MSC's range (512-767) */
pars2.mscpool.l3_info := valueof(ts_PAG_RESP(valueof(ts_MI_TMSI_NRI_LV(678))));
vc_conn2 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars2);
vc_conn2.done;
f_ctrs_msc_expect(2, "mscpool:subscr:known");
/* The above forwardings to third MSC have not affected the round robin, which still points at the second MSC */
var MSC_ConnHdlr vc_conn3;
var TestHdlrParams pars3 := f_gen_test_hdlr_pars(bssap_idx := 1);
pars3.mscpool.rsl_idx := 2;
pars3.mscpool.l3_info := valueof(ts_LU_REQ(LU_Type_IMSI_Attach, valueof(ts_MI_IMSI_LV('001010000000013'H)), '00F110'O));
vc_conn3 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars3);
vc_conn3.done;
f_ctrs_msc_expect(1, "mscpool:subscr:new");
}
/* LU with a TMSI but indicating a different PLMN in its previous LAI: ignore the NRI. */
/* FIXME: each run is using a separate RSLem: RSL, RSL1, RSL2. It should work
* just as well using only RSL. */
testcase TC_mscpool_LU_by_tmsi_from_other_PLMN() runs on test_CT {
f_init(nr_bts := 3, handler_mode := true, nr_msc := 3);
f_sleep(1.0);
/* The TMSIs in this test points at the second MSC, but since it is from a different PLMN, round-robin is used
* instead, and hits msc 0. */
f_vty_transceive(BSCVTY, "mscpool roundrobin next 0");
f_ctrs_msc_init();
/* An NRI of the second MSC's range (256-511), but a PLMN that doesn't match with osmo-bsc.cfg */
var MSC_ConnHdlr vc_conn1;
var TestHdlrParams pars1 := f_gen_test_hdlr_pars(bssap_idx := 0);
pars1.mscpool.rsl_idx := 0;
pars1.mscpool.l3_info := valueof(ts_LU_REQ(LU_Type_IMSI_Attach, valueof(ts_MI_TMSI_NRI_LV(260)), '99F999'O));
vc_conn1 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars1);
vc_conn1.done;
f_ctrs_msc_expect(0, "mscpool:subscr:new");
/* An NRI of the third MSC's range (512-767) and a matching PLMN gets directed by NRI. */
var MSC_ConnHdlr vc_conn2;
var TestHdlrParams pars2 := f_gen_test_hdlr_pars(bssap_idx := 2);
pars2.mscpool.rsl_idx := 1;
pars2.mscpool.l3_info := valueof(ts_LU_REQ(LU_Type_IMSI_Attach, valueof(ts_MI_TMSI_NRI_LV(555)), '00F110'O));
vc_conn2 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars2);
vc_conn2.done;
f_ctrs_msc_expect(2, "mscpool:subscr:known");
}
/* Make sure that whichever MSC paged a subscriber will also get the Paging Response. Page by IMSI, which would be
* round-robined to another MSC, to make sure the Paging->Response relation is stronger than the NRI->MSC mapping. */
private function f_tc_mscpool_paging_imsi(charstring id) runs on MSC_ConnHdlr {
var template BSSMAP_FIELD_CellIdentificationList cid_list := { cIl_CI := { ts_BSSMAP_CI_CI(0) } };
//cid_list := { cIl_allInBSS := ''O };
var RSL_ChanNeeded rsl_chneed := RSL_CHANNEED_SDCCH;
var template BSSMAP_IE_ChannelNeeded bssmap_chneed := ts_BSSMAP_IE_ChanNeeded(int2bit(enum2int(valueof(rsl_chneed)),2));
var BSSAP_N_UNITDATA_req paging;
var hexstring imsi := '001010000000123'H;
f_MscConnHdlr_init(g_pars.media_nr, "127.0.0.2", "127.0.0.3", FR_AMR);
paging := valueof(ts_BSSAP_UNITDATA_req(g_pars.sccp_addr_bsc, g_pars.sccp_addr_msc,
valueof(ts_BSSMAP_Paging(imsi, cid_list, omit, bssmap_chneed))));
BSSAP.send(paging);
/* Register any RSL conn so that the Paging Command gets received here. With the current RSL_Emulation's main()
* handling of '[bts_role] IPA_PT.receive(tr_ASP_RSL_UD(tr_RSL_PAGING_CMD()))' it doesn't matter at all which
* channel number is picked here. */
var RslChannelNr new_chan_nr := valueof(t_RslChanNr0(0, RSL_CHAN_NR_INVALID));
f_rslem_register(0, new_chan_nr);
RSL.receive(tr_RSL_PAGING_CMD(tr_MI_IMSI(imsi)));
f_rslem_unregister(0, new_chan_nr);
/* Despite the round robin pointing at the second MSC ('roundrobin next 1'), the earlier Paging for the same IMSI
* causes this Paging Response to go to the first MSC (bssap_idx := 0). */
f_perform_compl_l3(RSL, ts_PAG_RESP(valueof(ts_MI_IMSI_LV(imsi))) );
setverdict(pass);
f_sleep(1.0);
}
testcase TC_mscpool_paging_and_response_imsi() runs on test_CT {
f_init(nr_bts := 1, handler_mode := true, nr_msc := 3);
f_sleep(1.0);
/* Testing a Paging on the first MSC to get a Paging Response back to the first MSC. Set round robin to the
* second MSC to make sure we're getting the Paging logic, not a coincidental round robin match. */
f_vty_transceive(BSCVTY, "mscpool roundrobin next 1");
f_ctrs_msc_init();
var MSC_ConnHdlr vc_conn1;
var TestHdlrParams pars1 := f_gen_test_hdlr_pars(bssap_idx := 0);
pars1.mscpool.rsl_idx := 0;
pars1.sccp_addr_bsc := g_bssap[pars1.mscpool.bssap_idx].sccp_addr_peer;
pars1.sccp_addr_msc := g_bssap[pars1.mscpool.bssap_idx].sccp_addr_own;
vc_conn1 := f_start_handler(refers(f_tc_mscpool_paging_imsi), pars1);
vc_conn1.done;
f_ctrs_msc_expect(0, "mscpool:subscr:paged");
}
/* Make sure that whichever MSC paged a subscriber will also get the Paging Response. Page by TMSI with an NRI value
* that matches a different MSC, to make sure the Paging->Response relation is stronger than the NRI->MSC mapping. */
private function f_tc_mscpool_paging_tmsi(charstring id) runs on MSC_ConnHdlr {
var template BSSMAP_FIELD_CellIdentificationList cid_list := { cIl_CI := { ts_BSSMAP_CI_CI(0) } };
//cid_list := { cIl_allInBSS := ''O };
var RSL_ChanNeeded rsl_chneed := RSL_CHANNEED_SDCCH;
var template BSSMAP_IE_ChannelNeeded bssmap_chneed := ts_BSSMAP_IE_ChanNeeded(int2bit(enum2int(valueof(rsl_chneed)),2));
var integer nri_v := 300; /* <-- second MSC's NRI */
var octetstring tmsi := f_tmsi_nri(nri_v);
var BSSAP_N_UNITDATA_req paging;
f_MscConnHdlr_init(g_pars.media_nr, "127.0.0.2", "127.0.0.3", FR_AMR);
paging := valueof(ts_BSSAP_UNITDATA_req(g_pars.sccp_addr_bsc, g_pars.sccp_addr_msc,
valueof(ts_BSSMAP_Paging('001010000000011'H, cid_list, tmsi, bssmap_chneed))));
BSSAP.send(paging);
/* Register any RSL conn so that the Paging Command gets received here. With the current RSL_Emulation's main()
* handling of '[bts_role] IPA_PT.receive(tr_ASP_RSL_UD(tr_RSL_PAGING_CMD()))' it doesn't matter at all which
* channel number is picked here. */
var RslChannelNr new_chan_nr := valueof(t_RslChanNr0(0, RSL_CHAN_NR_INVALID));
f_rslem_register(0, new_chan_nr);
RSL.receive(tr_RSL_PAGING_CMD(t_MI_TMSI(tmsi)));
f_rslem_unregister(0, new_chan_nr);
/* Despite the NRI matching the second MSC (NRI from 'msc 1' in osmo-bsc.cfg) and round robin pointing at the
* third MSC ('roundrobin next 2'), the earlier Paging for the same TMSI causes this Paging Response to go to
* the first MSC (bssap_idx := 0). */
f_perform_compl_l3(RSL, ts_PAG_RESP(valueof(ts_MI_TMSI_NRI_LV(nri_v))) );
setverdict(pass);
f_sleep(1.0);
}
testcase TC_mscpool_paging_and_response_tmsi() runs on test_CT {
f_init(nr_bts := 1, handler_mode := true, nr_msc := 3);
f_sleep(1.0);
/* Testing a Paging on the first MSC to get a Paging Response back to the first MSC. Set round robin to the
* third MSC to make sure we're getting the Paging logic, not a coincidental round robin match. */
f_vty_transceive(BSCVTY, "mscpool roundrobin next 2");
f_ctrs_msc_init();
var MSC_ConnHdlr vc_conn1;
var TestHdlrParams pars1 := f_gen_test_hdlr_pars(bssap_idx := 0);
pars1.mscpool.rsl_idx := 0;
pars1.sccp_addr_bsc := g_bssap[pars1.mscpool.bssap_idx].sccp_addr_peer;
pars1.sccp_addr_msc := g_bssap[pars1.mscpool.bssap_idx].sccp_addr_own;
vc_conn1 := f_start_handler(refers(f_tc_mscpool_paging_tmsi), pars1);
vc_conn1.done;
f_ctrs_msc_expect(0, "mscpool:subscr:paged");
}
/* For round-robin, skip an MSC that has 'no allow-attach' set. */
/* FIXME: each run is using a separate RSLem: RSL, RSL1, RSL2. It should work
* just as well using only RSL. */
testcase TC_mscpool_no_allow_attach_round_robin() runs on test_CT {
f_init(nr_bts := 3, handler_mode := true, nr_msc := 3);
f_sleep(1.0);
/* Mark the second MSC as offloading, round-robin should skip this MSC now. */
f_vty_msc_allow_attach(BSCVTY, {true, false, true});
/* Control which MSC gets chosen next by the round-robin, otherwise
* would be randomly affected by which other tests ran before this. */
f_vty_transceive(BSCVTY, "mscpool roundrobin next 0");
f_ctrs_msc_init();
var MSC_ConnHdlr vc_conn1;
var TestHdlrParams pars1 := f_gen_test_hdlr_pars(bssap_idx := 0);
pars1.mscpool.rsl_idx := 0;
pars1.mscpool.l3_info := valueof(ts_LU_REQ(LU_Type_IMSI_Attach, valueof(ts_MI_IMSI_LV('001010000000001'H)), '00F110'O));
vc_conn1 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars1);
vc_conn1.done;
f_ctrs_msc_expect(0, "mscpool:subscr:new");
var MSC_ConnHdlr vc_conn2;
var TestHdlrParams pars2 := f_gen_test_hdlr_pars(bssap_idx := 2);
pars2.mscpool.rsl_idx := 1;
pars2.mscpool.l3_info := valueof(ts_CM_SERV_REQ(CM_TYPE_MO_CALL, valueof(ts_MI_IMSI_LV('001010000000002'H))));
vc_conn2 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars2);
vc_conn2.done;
f_ctrs_msc_expect(2, "mscpool:subscr:new");
var MSC_ConnHdlr vc_conn3;
var TestHdlrParams pars3 := f_gen_test_hdlr_pars(bssap_idx := 0);
pars3.mscpool.rsl_idx := 2;
pars3.mscpool.l3_info := valueof(ts_PAG_RESP(valueof(ts_MI_IMSI_LV('001010000000003'H))));
vc_conn3 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars3);
vc_conn3.done;
f_ctrs_msc_expect(0, "mscpool:subscr:new");
}
/* An MSC that has 'no allow-attach' set should still serve subscribers that are already attached according to their
* TMSI NRI. */
testcase TC_mscpool_no_allow_attach_valid_nri() runs on test_CT {
f_init(nr_bts := 3, handler_mode := true, nr_msc := 3);
f_sleep(1.0);
/* Mark the second MSC as offloading, round-robin should skip this MSC now. */
f_vty_msc_allow_attach(BSCVTY, {true, false, true});
/* Control which MSC gets chosen next by the round-robin, otherwise
* would be randomly affected by which other tests ran before this. */
f_vty_transceive(BSCVTY, "mscpool roundrobin next 0");
f_ctrs_msc_init();
/* Round robin points at msc 0, but the valid NRI directs to msc 1, even though msc 1 has 'no allow-attach'. */
var MSC_ConnHdlr vc_conn1;
var TestHdlrParams pars1 := f_gen_test_hdlr_pars(bssap_idx := 1);
pars1.mscpool.rsl_idx := 0;
/* An NRI of the second MSC's range (256-511) */
pars1.mscpool.l3_info := valueof(ts_CM_SERV_REQ(CM_TYPE_MO_CALL, valueof(ts_MI_TMSI_NRI_LV(260))));
vc_conn1 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars1);
vc_conn1.done;
f_ctrs_msc_expect(1, "mscpool:subscr:known");
var MSC_ConnHdlr vc_conn2;
var TestHdlrParams pars2 := f_gen_test_hdlr_pars(bssap_idx := 0);
pars2.mscpool.rsl_idx := 1;
pars2.mscpool.l3_info := valueof(ts_CM_SERV_REQ(CM_TYPE_MO_CALL, valueof(ts_MI_IMSI_LV('001010000000002'H))));
vc_conn2 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars2);
vc_conn2.done;
f_ctrs_msc_expect(0, "mscpool:subscr:new");
var MSC_ConnHdlr vc_conn3;
var TestHdlrParams pars3 := f_gen_test_hdlr_pars(bssap_idx := 2);
pars3.mscpool.rsl_idx := 2;
pars3.mscpool.l3_info := valueof(ts_CM_SERV_REQ(CM_TYPE_MO_CALL, valueof(ts_MI_IMSI_LV('001010000000003'H))));
vc_conn3 := f_start_handler(refers(f_tc_mscpool_compl_l3), pars3);
vc_conn3.done;
f_ctrs_msc_expect(2, "mscpool:subscr:new");
}
/* Allow/Deny emergency calls globally via VTY */
private function f_vty_allow_emerg_msc(boolean allow) runs on test_CT {
f_vty_enter_cfg_msc(BSCVTY, 0);
if (allow) {
f_vty_transceive(BSCVTY, "allow-emergency allow");
} else {
f_vty_transceive(BSCVTY, "allow-emergency deny");
}
f_vty_transceive(BSCVTY, "exit");
f_vty_transceive(BSCVTY, "exit");
}
/* Allow/Deny emergency calls per BTS via VTY */
private function f_vty_allow_emerg_bts(boolean allow, integer bts_nr) runs on test_CT {
f_vty_enter_cfg_bts(BSCVTY, bts_nr);
if (allow) {
f_vty_transceive(BSCVTY, "rach emergency call allowed 1");
} else {
f_vty_transceive(BSCVTY, "rach emergency call allowed 0");
}
f_vty_transceive(BSCVTY, "exit");
f_vty_transceive(BSCVTY, "exit");
}
/* Begin assignmet procedure and send an EMERGENCY SETUP (RR) */
private function f_assignment_emerg_setup() runs on MSC_ConnHdlr {
var PDU_ML3_MS_NW emerg_setup;
var octetstring emerg_setup_enc;
var RSL_Message emerg_setup_data_ind;
f_establish_fully(omit, omit);
emerg_setup := valueof(ts_ML3_MO_CC_EMERG_SETUP(1, valueof(ts_Bcap_voice)));
emerg_setup_enc := enc_PDU_ML3_MS_NW(emerg_setup);
emerg_setup_data_ind := valueof(ts_RSL_DATA_IND(g_chan_nr, valueof(ts_RslLinkID_DCCH(0)), emerg_setup_enc));
RSL.send(emerg_setup_data_ind);
}
/* Test if the EMERGENCY SETUP gets passed on to the MSC via A when EMERGENCY
* CALLS are permitted by the BSC config. */
private function f_TC_assignment_emerg_setup_allow(charstring id) runs on MSC_ConnHdlr {
var PDU_BSSAP emerg_setup_data_ind_bssap;
var PDU_ML3_MS_NW emerg_setup;
timer T := 3.0;
f_assignment_emerg_setup()
T.start;
alt {
[] BSSAP.receive(tr_BSSAP_DTAP) -> value emerg_setup_data_ind_bssap {
emerg_setup := dec_PDU_ML3_MS_NW(emerg_setup_data_ind_bssap.pdu.dtap);
if (not isbound(emerg_setup.msgs.cc.emergencySetup)) {
setverdict(fail, "no emergency setup");
}
}
[] BSSAP.receive {
setverdict(fail, "unexpected BSSAP message!");
}
[] T.timeout {
setverdict(fail, "timout waiting for EMERGENCY SETUP!");
}
}
setverdict(pass);
}
/* Test if the EMERGENCY SETUP gets blocked by the BSC if EMERGENCY CALLS are
* forbidden by the BSC config. */
private function f_TC_assignment_emerg_setup_deny(charstring id) runs on MSC_ConnHdlr {
var PDU_BSSAP emerg_setup_data_ind_bssap;
timer T := 3.0;
f_assignment_emerg_setup()
T.start;
alt {
[] RSL.receive(tr_RSL_DATA_REQ(g_chan_nr, ?, decmatch tr_RRM_RR_RELEASE)) {
setverdict(pass);
}
[] RSL.receive {
setverdict(fail, "unexpected RSL message!");
}
[] T.timeout {
setverdict(fail, "timout waiting for RR CHANNEL RELEASE!");
}
}
}
/* EMERGENCY CALL situation #1, allowed globally and by BTS */
testcase TC_assignment_emerg_setup_allow() runs on test_CT {
var TestHdlrParams pars := f_gen_test_hdlr_pars();
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
f_vty_allow_emerg_msc(true);
f_vty_allow_emerg_bts(true, 0);
vc_conn := f_start_handler(refers(f_TC_assignment_emerg_setup_allow), pars);
vc_conn.done;
}
/* EMERGENCY CALL situation #2, forbidden globally but allowed by BTS */
testcase TC_assignment_emerg_setup_deny_msc() runs on test_CT {
var TestHdlrParams pars := f_gen_test_hdlr_pars();
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
f_vty_allow_emerg_msc(false);
f_vty_allow_emerg_bts(true, 0);
vc_conn := f_start_handler(refers(f_TC_assignment_emerg_setup_deny), pars);
vc_conn.done;
}
/* EMERGENCY CALL situation #3, allowed globally but forbidden by BTS */
testcase TC_assignment_emerg_setup_deny_bts() runs on test_CT {
var TestHdlrParams pars := f_gen_test_hdlr_pars();
var MSC_ConnHdlr vc_conn;
/* Note: This simulates a spec violation by the MS, correct MS
* implementations would not try to establish an emergency call because
* the system information tells in advance that emergency calls are
* not forbidden */
f_init(1, true);
f_sleep(1.0);
f_vty_allow_emerg_msc(true);
f_vty_allow_emerg_bts(false, 0);
vc_conn := f_start_handler(refers(f_TC_assignment_emerg_setup_deny), pars);
vc_conn.done;
}
/* Dyn PDCH todo:
* activate OSMO as TCH/F
* activate OSMO as TCH/H
* does the BSC-located PCU socket get the updated INFO?
* what if no PCU is connected at the time?
* is the info correct on delayed PCU (re)connect?
*/
control {
/* CTRL interface testing */
execute( TC_ctrl_msc_connection_status() );
execute( TC_ctrl_msc0_connection_status() );
execute( TC_ctrl() );
if (mp_bssap_cfg[0].transport == BSSAP_TRANSPORT_SCCPlite_SERVER) {
execute( TC_ctrl_location() );
}
execute( TC_si_default() );
execute( TC_si2quater_2_earfcns() );
execute( TC_si2quater_3_earfcns() );
execute( TC_si2quater_4_earfcns() );
execute( TC_si2quater_5_earfcns() );
execute( TC_si2quater_6_earfcns() );
execute( TC_si2quater_12_earfcns() );
execute( TC_si2quater_23_earfcns() );
execute( TC_si2quater_32_earfcns() );
execute( TC_si2quater_33_earfcns() );
execute( TC_si2quater_42_earfcns() );
execute( TC_si2quater_48_earfcns() );
execute( TC_si2quater_49_earfcns() );
execute( TC_si_acc_rotate() );
execute (TC_si_acc_ramp_rotate() );
/* RSL DCHAN Channel ACtivation / Deactivation */
execute( TC_chan_act_noreply() );
execute( TC_chan_act_counter() );
execute( TC_chan_act_ack_noest() );
execute( TC_chan_act_ack_noest_emerg() );
execute( TC_chan_rqd_emerg_deny() );
execute( TC_chan_act_ack_est_ind_noreply() );
execute( TC_chan_act_ack_est_ind_refused() );
execute( TC_chan_act_nack() );
execute( TC_chan_exhaustion() );
execute( TC_chan_deact_silence() );
execute( TC_chan_rel_rll_rel_ind() );
execute( TC_chan_rel_conn_fail() );
execute( TC_chan_rel_hard_clear() );
execute( TC_chan_rel_hard_clear_csfb() );
execute( TC_chan_rel_hard_rlsd() );
execute( TC_chan_rel_hard_rlsd_ms_dead() );
execute( TC_chan_rel_a_reset() );
execute( TC_chan_rel_sccp_tiar_timeout() );
execute( TC_chan_rel_rr_cause() );
execute( TC_outbound_connect() );
/* Assignment related */
execute( TC_assignment_cic_only() );
execute( TC_assignment_csd() );
execute( TC_assignment_ctm() );
execute( TC_assignment_sign() );
execute( TC_assignment_fr_a5_0() );
execute( TC_assignment_fr_a5_1() );
if (mp_bssap_cfg[0].transport == BSSAP_TRANSPORT_AoIP) {
execute( TC_assignment_fr_a5_1_codec_missing() );
}
execute( TC_assignment_fr_a5_3() );
execute( TC_assignment_fr_a5_4() );
execute( TC_ciph_mode_a5_0() );
execute( TC_ciph_mode_a5_1() );
execute( TC_ciph_mode_a5_3() );
execute( TC_assignment_codec_fr() );
execute( TC_assignment_codec_hr() );
execute( TC_assignment_codec_efr() );
execute( TC_assignment_codec_amr_f() );
execute( TC_assignment_codec_amr_h() );
if (mp_bssap_cfg[0].transport == BSSAP_TRANSPORT_AoIP) {
execute( TC_assignment_codec_amr_f_S1() );
execute( TC_assignment_codec_amr_h_S1() );
execute( TC_assignment_codec_amr_f_S124() );
execute( TC_assignment_codec_amr_h_S124() );
execute( TC_assignment_codec_amr_f_S0() );
execute( TC_assignment_codec_amr_f_S02() );
execute( TC_assignment_codec_amr_f_S024() );
execute( TC_assignment_codec_amr_f_S0247() );
execute( TC_assignment_codec_amr_h_S0() );
execute( TC_assignment_codec_amr_h_S02() );
execute( TC_assignment_codec_amr_h_S024() );
execute( TC_assignment_codec_amr_h_S0247() );
execute( TC_assignment_codec_amr_f_S01234567() );
execute( TC_assignment_codec_amr_f_S0234567() );
execute( TC_assignment_codec_amr_f_zero() );
execute( TC_assignment_codec_amr_f_unsupp() );
execute( TC_assignment_codec_amr_h_S7() );
}
execute( TC_assignment_codec_fr_exhausted_req_hr() );
execute( TC_assignment_codec_fr_exhausted_req_fr() );
execute( TC_assignment_codec_fr_exhausted_req_fr_hr() );
execute( TC_assignment_codec_fr_exhausted_req_hr_fr() );
execute( TC_assignment_codec_hr_exhausted_req_fr() );
execute( TC_assignment_codec_hr_exhausted_req_hr() );
execute( TC_assignment_codec_hr_exhausted_req_hr_fr() );
execute( TC_assignment_codec_hr_exhausted_req_fr_hr() );
execute( TC_assignment_codec_req_hr_fr() );
execute( TC_assignment_codec_req_fr_hr() );
if (mp_enable_osmux_test) {
execute( TC_assignment_osmux() );
}
/* RLL Establish Indication on inactive DCHAN / SAPI */
execute( TC_rll_est_ind_inact_lchan() );
execute( TC_rll_est_ind_inval_sapi1() );
execute( TC_rll_est_ind_inval_sapi3() );
execute( TC_rll_est_ind_inval_sacch() );
/* Paging related tests */
execute( TC_paging_imsi_nochan() );
execute( TC_paging_tmsi_nochan() );
execute( TC_paging_tmsi_any() );
execute( TC_paging_tmsi_sdcch() );
execute( TC_paging_tmsi_tch_f() );
execute( TC_paging_tmsi_tch_hf() );
execute( TC_paging_imsi_nochan_cgi() );
execute( TC_paging_imsi_nochan_lac_ci() );
execute( TC_paging_imsi_nochan_ci() );
execute( TC_paging_imsi_nochan_lai() );
execute( TC_paging_imsi_nochan_lac() );
execute( TC_paging_imsi_nochan_all() );
execute( TC_paging_imsi_nochan_plmn_lac_rnc() );
execute( TC_paging_imsi_nochan_rnc() );
execute( TC_paging_imsi_nochan_lac_rnc() );
execute( TC_paging_imsi_nochan_lacs() );
execute( TC_paging_imsi_nochan_lacs_empty() );
execute( TC_paging_imsi_nochan_cgi_unknown_cid() );
execute( TC_paging_imsi_a_reset() );
execute( TC_paging_imsi_load() );
execute( TC_paging_counter() );
execute( TC_paging_resp_unsol() );
execute( TC_rsl_drop_counter() );
execute( TC_rsl_unknown_unit_id() );
execute( TC_oml_unknown_unit_id() );
execute( TC_classmark() );
execute( TC_common_id() );
execute( TC_unsol_ass_fail() );
execute( TC_unsol_ass_compl() );
execute( TC_unsol_ho_fail() );
execute( TC_err_82_short_msg() );
execute( TC_err_84_unknown_msg() );
execute( TC_ho_int() );
execute( TC_ho_out_of_this_bsc() );
execute( TC_ho_out_fail_no_msc_response() );
execute( TC_ho_out_fail_rr_ho_failure() );
execute( TC_ho_out_fail_no_result_after_ho_cmd() );
execute( TC_ho_into_this_bsc() );
execute( TC_ho_in_fail_msc_clears() );
execute( TC_ho_in_fail_msc_clears_after_ho_detect() );
execute( TC_ho_in_fail_no_detect() );
execute( TC_ho_in_fail_no_detect2() );
execute( TC_ho_neighbor_config_1() );
execute( TC_ho_neighbor_config_2() );
execute( TC_ho_neighbor_config_3() );
execute( TC_ho_neighbor_config_4() );
execute( TC_ho_neighbor_config_5() );
execute( TC_ho_neighbor_config_6() );
execute( TC_ho_neighbor_config_7() );
execute( TC_bssap_rlsd_does_not_cause_bssmap_reset() );
execute( TC_bssmap_clear_does_not_cause_bssmap_reset() );
execute( TC_ms_rel_ind_does_not_cause_bssmap_reset() );
execute( TC_dyn_pdch_ipa_act_deact() );
execute( TC_dyn_pdch_ipa_act_nack() );
execute( TC_dyn_pdch_osmo_act_deact() );
execute( TC_dyn_pdch_osmo_act_nack() );
execute( TC_chopped_ipa_ping() );
execute( TC_chopped_ipa_payload() );
/* Power control related */
execute( TC_assignment_verify_ms_power_params_ie() );
/* MSC pooling */
/* FIXME: in SCCPlite, indicating how many MSCs should be connected does currently not work. Since
* RESET->RESET-ACK is unconditionally negotiated for all configured MSCs, they always all appear as connected
* to osmo-bsc. The MSC pooling tests however require disconnecting selected MSCs, and hence don't work out as
* intended on SCCPlite. So for now, run these only for SCCP/M3UA. */
if (mp_bssap_cfg[0].transport == BSSAP_TRANSPORT_AoIP) {
execute( TC_mscpool_L3Compl_on_1_msc() );
execute( TC_mscpool_L3Complete_by_imsi_round_robin() );
execute( TC_mscpool_LU_by_tmsi_null_nri_0_round_robin() );
execute( TC_mscpool_LU_by_tmsi_null_nri_1_round_robin() );
execute( TC_mscpool_L3Complete_by_tmsi_unassigned_nri_round_robin() );
execute( TC_mscpool_L3Complete_by_tmsi_valid_nri_msc_not_connected_round_robin() );
execute( TC_mscpool_L3Complete_by_tmsi_valid_nri_1() );
execute( TC_mscpool_L3Complete_by_tmsi_valid_nri_2() );
execute( TC_mscpool_LU_by_tmsi_from_other_PLMN() );
execute( TC_mscpool_paging_and_response_imsi() );
execute( TC_mscpool_paging_and_response_tmsi() );
execute( TC_mscpool_no_allow_attach_round_robin() );
execute( TC_mscpool_no_allow_attach_valid_nri() );
}
/* at bottom as they might crash OsmoBSC before OS#3182 is fixed */
execute( TC_early_conn_fail() );
execute( TC_late_conn_fail() );
/* Emergency call handling (deny / allow) */
execute( TC_assignment_emerg_setup_allow() );
execute( TC_assignment_emerg_setup_deny_msc() );
execute( TC_assignment_emerg_setup_deny_bts() );
}
}