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osmo-ttcn3-hacks/bsc/BSC_Tests.ttcn

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module BSC_Tests {
/* Integration Tests for OsmoBSC
* (C) 2017 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.
*
* 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 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 BSSAP_Adapter all;
import from BSSAP_CodecPort all;
import from BSSMAP_Templates all;
import from IPA_Emulation all;
import from IPA_Types all;
import from RSL_Types all;
import from RSL_Emulation all;
import from MGCP_Emulation all;
import from Osmocom_CTRL_Functions all;
import from Osmocom_CTRL_Types all;
import from Osmocom_CTRL_Adapter 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 L3_Templates all;
import from GSM_RR_Types all;
const integer NUM_BTS := 3;
const float T3101_MAX := 12.0;
/* make sure to sync this with the osmo-bts.cfg you're using */
const integer NUM_TCHF_PER_BTS := 5;
const integer NUM_SDCCH_PER_BTS := 4;
/* per-BTS state which we keep */
type record BTS_State {
/* component reference to the IPA_Client component used for RSL */
IPA_Client rsl
}
type component test_CT extends CTRL_Adapter_CT {
/* Array of per-BTS state */
var BTS_State bts[NUM_BTS];
/* array of per-BTS RSL test ports */
port IPA_RSL_PT IPA_RSL[NUM_BTS];
var MGCP_Emulation_CT vc_MGCP;
port TELNETasp_PT BSCVTY;
var BSSAP_Adapter g_bssap;
/* for old legacy-tests only */
port BSSAP_CODEC_PT BSSAP;
/* are we initialized yet */
var boolean g_initialized := false;
/* global test case guard timer */
timer T_guard := 30.0;
}
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 RSL connections */
integer mp_bsc_rsl_port := 3003;
/* port number to which to establish the IPA CTRL connection */
integer mp_bsc_ctrl_port := 4249;
/* IP address at which the test binds */
charstring mp_test_ip := "127.0.0.1";
BSSAP_Configuration mp_bssap_cfg := {
sccp_service_type := "mtp3_itu",
sctp_addr := { 23905, "127.0.0.1", 2905, "127.0.0.1" },
own_pc := 185,
own_ssn := 254,
peer_pc := 187,
peer_ssn := 254,
sio := '83'O
};
}
private function f_legacy_bssap_reset() runs on test_CT {
var BSSAP_N_UNITDATA_ind ud_ind;
timer T := 5.0;
BSSAP.send(ts_BSSAP_UNITDATA_req(g_bssap.sccp_addr_peer, g_bssap.sccp_addr_own, ts_BSSMAP_Reset(0)));
T.start;
alt {
[] BSSAP.receive(tr_BSSAP_UNITDATA_ind(g_bssap.sccp_addr_own, g_bssap.sccp_addr_peer, tr_BSSMAP_ResetAck)) {
log("Received RESET-ACK in response to RESET, we're ready to go!");
}
[] BSSAP.receive(tr_BSSAP_UNITDATA_ind(?, ?, tr_BSSMAP_Reset)) -> 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));
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");
}
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(ASP_IPA_Event:{up_down := ASP_IPA_EVENT_ID_ACK}) {
T.stop;
IPA_RSL[i].send(ts_ASP_RSL_UD(IPAC_PROTO_RSL_TRX0,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");
self.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 oml-connection-state ", status);
self.stop;
}
}
}
/* sleep for given number of (fractional) seconds */
function f_sleep(float seconds) {
timer T := seconds;
T.start;
T.timeout;
}
/* 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"); }
/* always respond with RESET ACK to RESET */
[] BSSAP.receive(tr_BSSAP_UNITDATA_ind(?, ?, tr_BSSMAP_Reset)) -> value ud_ind {
BSSAP.send(ts_BSSAP_UNITDATA_req(ud_ind.callingAddress, ud_ind.calledAddress,
ts_BSSMAP_ResetAck));
repeat;
}
}
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
};
vc_MGCP := MGCP_Emulation_CT.create(id);
vc_MGCP.start(MGCP_Emulation.main(ops, mgcp_pars, id));
}
private function f_init_vty(charstring id) runs on test_CT {
map(self:BSCVTY, system:BSCVTY);
f_vty_set_prompts(BSCVTY);
f_vty_transceive(BSCVTY, "enable");
}
/* 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) */
function f_init(integer nr_bts := NUM_BTS, boolean handler_mode := false) runs on test_CT {
var integer i;
if (g_initialized) {
return;
}
g_initialized := true;
/* Call a function of our 'parent component' BSSAP_Adapter_CT to start the
* MSC-side BSSAP emulation */
if (handler_mode) {
f_bssap_init(g_bssap, mp_bssap_cfg, "VirtMSC", MSC_BssmapOps);
} else {
f_bssap_init(g_bssap, mp_bssap_cfg, "VirtMSC", omit);
connect(self:BSSAP, g_bssap.vc_SCCP:SCCP_SP_PORT);
f_legacy_bssap_reset();
}
f_ipa_ctrl_start(mp_bsc_ip, mp_bsc_ctrl_port);
f_init_mgcp("VirtMSC");
f_init_vty("VirtMSC");
for (i := 0; i < nr_bts; i := i+1) {
/* wait until osmo-bts-omldummy has respawned */
f_wait_oml(i, "degraded", 5.0);
/* start RSL connection */
f_ipa_rsl_start(bts[i].rsl, mp_bsc_ip, mp_bsc_rsl_port, i, handler_mode);
/* wait until BSC tells us "connected" */
f_wait_oml(i, "connected", 5.0);
}
T_guard.start;
activate(as_Tguard());
}
/* expect to receive a RSL message matching a specified templaten 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(sid, t_rx)) -> value rx_rsl_ud {
T.stop;
}
[] IPA_RSL[bts_nr].receive { repeat; }
[] T.timeout {
setverdict(fail, "Timeout expecting ", t_rx);
self.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(sid, t_tx));
}
/* 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;
f_init(1);
IPA_RSL[0].send(ts_ASP_RSL_UD(IPAC_PROTO_RSL_TRX0,ts_RSL_CHAN_RQD('23'O, 23)));
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;
f_init(1);
chreq_total := f_ctrl_get_ratectr_abs(IPA_CTRL, "bts", 0, "chreq:total");
IPA_RSL[0].send(ts_ASP_RSL_UD(IPAC_PROTO_RSL_TRX0,ts_RSL_CHAN_RQD('23'O, 23)));
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 */
testcase TC_chan_act_ack_noest() runs on test_CT {
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();
/* 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);
}
/* 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 */
IPA_RSL[0].clear;
alt {
[] IPA_RSL[0].receive(tr_ASP_RSL_UD(sid, tr_RSL_MsgTypeD(RSL_MT_RF_CHAN_REL))) -> value rx_rsl_ud { }
[] IPA_RSL[0].receive(tr_ASP_RSL_UD(sid, tr_RSL_REL_REQ(chan_nr, ?))) -> value rx_rsl_ud {
f_ipa_tx(0, ts_RSL_REL_CONF(chan_nr, main_dcch));
repeat;
}
}
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);
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");
/* expect 5xTCH/F to succeed */
for (i := 0; i < NUM_TCHF_PER_BTS + NUM_SDCCH_PER_BTS; i := i+1) {
f_chreq_act_ack('23'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_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(IPAC_PROTO_RSL_TRX0,
tr_RSL_MsgTypeD(RSL_MT_CHAN_ACTIV))) {
setverdict(fail, "Received CHAN ACT ACK without resources?!?");
}
[] IPA_RSL[0].receive(tr_ASP_RSL_UD(IPAC_PROTO_RSL_TRX0, 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_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; }
}
}
/***********************************************************************
* Assignment Testing
***********************************************************************/
/* Verify that the BSC refuses any BSSAP connection from the MSC (They are all BSC->MSC direction) */
testcase TC_outbound_connect() runs on test_CT {
f_init(1);
BSSAP.send(ts_BSSAP_CONNECT_req(g_bssap.sccp_addr_peer, g_bssap.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() 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, ts_BSSMAP_AssignmentReq(ts_BSSMAP_IE_CIC(0, 1))));
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; }
}
}
/* 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 BSSMAP_IE_AoIP_TransportLayerAddress tla := valueof(ts_BSSMAP_IE_AoIP_TLA4('01020304'O, 2342));
var PDU_BSSAP ass_cmd := valueof(ts_BSSMAP_AssignmentReq(omit, tla));
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 BSSMAP_IE_AoIP_TransportLayerAddress tla := valueof(ts_BSSMAP_IE_AoIP_TLA4('01020304'O, 2342));
var PDU_BSSAP ass_cmd := valueof(ts_BSSMAP_AssignmentReq(omit, tla));
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));
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;
}
/* 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 RSL_Message rx_rsl;
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 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 DISC_IND on MSC side */
BSSAP.receive(tr_BSSAP_DISC_ind(dt.sccp_conn_id, ?, ?));
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 RSL_Message rx_rsl;
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 */
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));
/* release the SCCP connection */
BSSAP.send(ts_BSSAP_DISC_req(dt.sccp_conn_id, 0));
/* wait for SCCP emulation to do its job */
f_sleep(1.0);
setverdict(pass);
}
function f_expect_chan_rel(integer bts_nr, RslChannelNr rsl_chan_nr, boolean flush := true,
boolean handle_rll_rel := true) runs on test_CT {
var RslLinkId main_dcch := valueof(ts_RslLinkID_DCCH(0));
if (flush) {
/* Clear the queue, it might still contain stuff like IMMEDIATE ASSIGN */
IPA_RSL[bts_nr].clear;
}
alt {
/* ignore DEACTIVATE SACCH (if any) */
[] IPA_RSL[bts_nr].receive(tr_ASP_RSL_UD(IPAC_PROTO_RSL_TRX0,
tr_RSL_DEACT_SACCH(rsl_chan_nr))) {
repeat;
}
/* acknowledge RLL release (if any)*/
[handle_rll_rel] IPA_RSL[bts_nr].receive(tr_ASP_RSL_UD(IPAC_PROTO_RSL_TRX0,
tr_RSL_REL_REQ(rsl_chan_nr, ?))) {
/* FIXME: Why are we getting this for LinkID SACCH? */
f_ipa_tx(0, ts_RSL_REL_CONF(rsl_chan_nr, main_dcch));
repeat;
}
/* Expect RF channel release from BSC on Abis */
[] IPA_RSL[bts_nr].receive(tr_ASP_RSL_UD(IPAC_PROTO_RSL_TRX0,
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(IPAC_PROTO_RSL_TRX0, tr_RSL_MsgTypeR(?))) {
repeat;
}
}
}
/* 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);
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);
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.sccp_addr_peer, g_bssap.sccp_addr_own, ts_BSSMAP_Reset(0)));
interleave {
[] BSSAP.receive(tr_BSSAP_UNITDATA_ind(g_bssap.sccp_addr_own, g_bssap.sccp_addr_peer, tr_BSSMAP_ResetAck)) { }
[] BSSAP.receive(tr_BSSAP_DISC_ind(dt.sccp_conn_id, ?, ?)) { }
}
f_expect_chan_rel(0, dt.rsl_chan_nr, false);
setverdict(pass);
}
/* 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_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", "1");
f_ctrl_get_exp(IPA_CTRL, "mnc", "1");
f_ctrl_get_exp(IPA_CTRL, "number-of-bts", "3");
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);
}
function f_bssap_tx_ud(template PDU_BSSAP bssap) runs on test_CT {
BSSAP.send(ts_BSSAP_UNITDATA_req(g_bssap.sccp_addr_peer, g_bssap.sccp_addr_own, bssap));
}
/***********************************************************************
* Paging Testing
***********************************************************************/
type record Cell_Identity {
GsmMcc mcc,
GsmMnc mnc,
GsmLac lac,
GsmCellId ci
};
private const Cell_Identity cid := { '001'H, '001'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 OCT4 tmsi := omit) runs on test_CT
{
var template BSSMAP_IE_ChannelNeeded bssmap_chneed;
var MobileIdentity mi;
var template octetstring id_enc; /* FIXME */
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 < sizeof(bts_ids); i := i + 1) {
IPA_RSL[bts_ids[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;
}
f_bssap_tx_ud(ts_BSSMAP_Paging(imsi, cid_list, tmsi, bssmap_chneed));
/* FIXME: Disabled due to bugs in both GSM_RR_Types and MobileL3_CommonIE_Types IMSI encoder
if (isvalue(tmsi)) {
mi := valueof(t_Osmo_MI_TMSI(oct2int(valueof(tmsi))));
} else {
mi := valueof(ts_Osmo_MI_IMSI(imsi));
}
id_enc := enc_MobileIdentity(mi);
*/
id_enc := ?;
for (i := 0; i < sizeof(bts_ids); i := i + 1) {
rx_rsl := f_exp_ipa_rx(bts_ids[i], tr_RSL_PAGING_CMD(id_enc));
/* 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(IPAC_PROTO_RSL_TRX0, tr_RSL_PAGING_CMD(id_enc))) {
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);
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;
}
f_bssap_tx_ud(ts_BSSMAP_Paging('001010123456789'H, cid_list, omit, omit));
/* wait for some time until when paging messages would appear */
f_sleep(3.0);
for (i := 0; i < NUM_BTS; i := i + 1) {
timer T := 0.01;
T.start;
alt {
[] IPA_RSL[i].receive(tr_ASP_RSL_UD(IPAC_PROTO_RSL_TRX0, tr_RSL_PAGING_CMD(?))) {
setverdict(fail, "Received unexpected paging");
}
[] T.timeout {}
}
}
setverdict(pass);
}
/* 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);
}
/* 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);
}
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);
}
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);
}
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);
}
/* 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 });
}
/* 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 });
}
/* 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 });
}
/* 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);
}
/* 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);
}
/* 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);
}
/* Paging by PLMN+LAC+RNC */
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_all);
}
/* Paging by RNC */
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_all);
}
/* Paging by LAC+RNC */
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_all);
}
/* 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);
}
/* 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);
}
/* 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;
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));
/* Wait for 4 seconds if any more PAGING CMD are received on RSL. Normally,
* there would be 8 retransmissions during 4 seconds */
T.start;
alt {
[] IPA_RSL[0].receive(tr_ASP_RSL_UD(IPAC_PROTO_RSL_TRX0, tr_RSL_PAGING_CMD(?))) {
setverdict(fail, "Received PAGING after LOAD_IND(0)");
self.stop;
}
[] T.timeout {
setverdict(pass);
}
}
}
/* 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);
}
setverdict(pass);
}
/* 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.sccp_addr_peer, g_bssap.sccp_addr_own, ts_BSSMAP_Reset(0)));
alt {
[] BSSAP.receive(tr_BSSAP_UNITDATA_ind(g_bssap.sccp_addr_own, g_bssap.sccp_addr_peer, tr_BSSMAP_ResetAck)) { }
[] BSSAP.receive { repeat; }
}
/* Clear the queue, it might still contain stuff like BCCH FILLING */
IPA_RSL[0].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(IPAC_PROTO_RSL_TRX0, tr_RSL_PAGING_CMD(?))) {
setverdict(fail, "Received PAGING after A-RESET");
self.stop;
}
[] IPA_RSL[1].receive(tr_ASP_RSL_UD(IPAC_PROTO_RSL_TRX0, tr_RSL_PAGING_CMD(?))) {
setverdict(fail, "Received PAGING after A-RESET");
self.stop;
}
[] IPA_RSL[2].receive(tr_ASP_RSL_UD(IPAC_PROTO_RSL_TRX0, tr_RSL_PAGING_CMD(?))) {
setverdict(fail, "Received PAGING after A-RESET");
self.stop;
}
[] T.timeout {
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 */
/***********************************************************************
* "New world" test cases using RSL_Emulation + BSSMAP_Emulation
***********************************************************************/
import from BSSMAP_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, connect and start a MSC_ConnHdlr component */
function f_start_handler(void_fn fn, charstring id) runs on test_CT return MSC_ConnHdlr {
var MSC_ConnHdlr vc_conn;
vc_conn := MSC_ConnHdlr.create(id);
connect(vc_conn:BSSMAPEM, g_bssap.vc_BSSMAP: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);
connect(vc_conn:RSL1, bts[1].rsl.vc_RSL:CLIENT_PT);
connect(vc_conn:RSL1_PROC, bts[1].rsl.vc_RSL:RSL_PROC);
connect(vc_conn:BSSAP, g_bssap.vc_BSSMAP:CLIENT);
connect(vc_conn:MGCP, vc_MGCP:MGCP_CLIENT);
vc_conn.start(derefers(fn)(id));
return vc_conn;
}
private function f_tc_assignment_fr_a5_0(charstring id) runs on MSC_ConnHdlr {
var TestHdlrParams pars := valueof(t_def_TestHdlrPars);
var template PDU_BSSAP exp_compl := tr_BSSMAP_AssignmentComplete(omit, ?);
var BSSMAP_IE_AoIP_TransportLayerAddress tla := valueof(ts_BSSMAP_IE_AoIP_TLA4('01020304'O, 2342));
var PDU_BSSAP ass_cmd := valueof(ts_BSSMAP_AssignmentReq(omit, tla));
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(pars, ass_cmd, exp_compl);
f_cipher_mode('01'O, kc);
}
testcase TC_assignment_fr_a5_0() 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_0), testcasename());
vc_conn.done;
}
private function f_tc_assignment_fr_a5_1(charstring id) runs on MSC_ConnHdlr {
var TestHdlrParams pars := valueof(t_def_TestHdlrPars);
var template PDU_BSSAP exp_compl := tr_BSSMAP_AssignmentComplete(omit, ?);
var BSSMAP_IE_AoIP_TransportLayerAddress tla := valueof(ts_BSSMAP_IE_AoIP_TLA4('01020304'O, 2342));
var PDU_BSSAP ass_cmd := valueof(ts_BSSMAP_AssignmentReq(omit, tla));
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(pars, ass_cmd, exp_compl);
f_cipher_mode('02'O, kc);
}
testcase TC_assignment_fr_a5_1() 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), testcasename());
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 {
var TestHdlrParams pars := valueof(t_def_TestHdlrPars);
var template PDU_BSSAP exp_fail := tr_BSSMAP_AssignmentFail;
var BSSMAP_IE_AoIP_TransportLayerAddress tla := valueof(ts_BSSMAP_IE_AoIP_TLA4('01020304'O, 2342));
var PDU_BSSAP ass_cmd := valueof(ts_BSSMAP_AssignmentReq(omit, tla));
const OCT8 kc := '0001020304050607'O;
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
f_establish_fully(pars, 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), testcasename());
vc_conn.done;
}
private function f_tc_assignment_fr_a5_3(charstring id ) runs on MSC_ConnHdlr {
var TestHdlrParams pars := valueof(t_def_TestHdlrPars);
var template PDU_BSSAP exp_compl := tr_BSSMAP_AssignmentComplete(omit, ?);
var BSSMAP_IE_AoIP_TransportLayerAddress tla := valueof(ts_BSSMAP_IE_AoIP_TLA4('01020304'O, 2342));
var PDU_BSSAP ass_cmd := valueof(ts_BSSMAP_AssignmentReq(omit, tla));
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(pars, ass_cmd, exp_compl);
f_cipher_mode('08'O, kc);
}
testcase TC_assignment_fr_a5_3() 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_3), testcasename());
vc_conn.done;
}
private function f_tc_assignment_fr_a5_4(charstring id) runs on MSC_ConnHdlr {
var TestHdlrParams pars := valueof(t_def_TestHdlrPars);
var template PDU_BSSAP exp_compl := tr_BSSMAP_AssignmentComplete(omit, ?);
var BSSMAP_IE_AoIP_TransportLayerAddress tla := valueof(ts_BSSMAP_IE_AoIP_TLA4('01020304'O, 2342));
var PDU_BSSAP ass_cmd := valueof(ts_BSSMAP_AssignmentReq(omit, tla));
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(pars, 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), testcasename());
vc_conn.done;
}
private function f_tc_assignment_sign(charstring id) runs on MSC_ConnHdlr {
var TestHdlrParams pars := valueof(t_def_TestHdlrPars);
var template PDU_BSSAP exp_compl := tr_BSSMAP_AssignmentComplete(omit, omit);
var PDU_BSSAP ass_cmd := valueof(ts_BSSMAP_AssignmentReq(omit, omit));
ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelTypeSIGNAL);
f_establish_fully(pars, ass_cmd, exp_compl);
}
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), testcasename());
vc_conn.done;
}
/* test if L3 RR CLASSMARK CHANGE is translated to BSSMAP CLASSMARK UPDATE */
private function f_tc_classmark(charstring id) runs on MSC_ConnHdlr {
var TestHdlrParams pars := valueof(t_def_TestHdlrPars);
f_create_chan_and_exp(pars);
/* we should now have a COMPL_L3 at the MSC */
BSSAP.receive(tr_BSSMAP_ComplL3);
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), testcasename());
vc_conn.done;
}
private function f_est_single_l3(template PDU_ML3_MS_NW l3) runs on MSC_ConnHdlr {
var TestHdlrParams pars := valueof(t_def_TestHdlrPars);
f_create_chan_and_exp(pars);
/* 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);
self.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), testcasename());
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), testcasename());
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), testcasename());
vc_conn.done;
}
/* short message from MS should be ignored */
private function f_tc_err_82_short_msg(charstring id) runs on MSC_ConnHdlr {
var TestHdlrParams pars := valueof(t_def_TestHdlrPars);
f_create_chan_and_exp(pars);
/* 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), testcasename());
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(inconc); }
}
}
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), testcasename());
vc_conn.done;
}
/* 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);
self.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);
}
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 {
var TestHdlrParams pars := valueof(t_def_TestHdlrPars);
var template PDU_BSSAP exp_compl := tr_BSSMAP_AssignmentComplete(omit, ?);
var BSSMAP_IE_AoIP_TransportLayerAddress tla := valueof(ts_BSSMAP_IE_AoIP_TLA4('01020304'O, 2342));
var PDU_BSSAP ass_cmd := valueof(ts_BSSMAP_AssignmentReq(omit, tla));
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(pars, ass_cmd, exp_compl);
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);
alt {
[] as_handover(hs);
/* FIXME: somehow determine that the hand-over has completed, by MGCP MDCX? */
}
}
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), testcasename());
vc_conn.done;
}
control {
/* CTRL interface testing */
execute( TC_ctrl_msc_connection_status() );
execute( TC_ctrl_msc0_connection_status() );
execute( TC_ctrl() );
/* 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_est_ind_noreply() );
execute( TC_chan_act_ack_est_ind_refused() );
execute( TC_chan_act_nack() );
execute( TC_chan_exhaustion() );
execute( TC_chan_rel_rll_rel_ind() );
execute( TC_chan_rel_conn_fail() );
execute( TC_chan_rel_hard_clear() );
execute( TC_chan_rel_hard_rlsd() );
execute( TC_chan_rel_a_reset() );
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() );
execute( TC_assignment_fr_a5_1_codec_missing() );
execute( TC_assignment_fr_a5_3() );
execute( TC_assignment_fr_a5_4() );
/* 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_a_reset() );
execute( TC_paging_imsi_load() );
execute( TC_rsl_drop_counter() );
execute( TC_classmark() );
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() );
}
}
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