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osmo-ttcn3-hacks
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epdg: Include BearerContext in CreateSessionResponse 

Change-Id: I89e364a5be68105ae8811e8bc917f32511f9e6ef
This commit is contained in:
Pau Espin 2023-10-23 20:56:09 +02:00
parent 1344e47a59
commit 8c74649358
2 changed files with 40 additions and 5 deletions
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10
epdg/EPDG_Tests.ttcn
View File

@ -393,9 +393,12 @@ private altstep as_GTP2C_CreateSession_success() runs on EPDG_ConnHdlr {
var PDU_GTPCv2 rx_msg;
var template (value) FullyQualifiedTEID fteid_c_ie, fteid_u_ie;
var template (value) PDN_AddressAllocation paa;
var uint4_t bid;
var template (value) BearerContextIEs bctx_ies;
[] GTP2.receive(tr_GTP2C_CreateSessionReq(g_pars.imsi)) -> value rx_msg {
/* TODO: parse TEIC and TEID and store it in g_pars.remote_tei{c,d} */
bid := rx_msg.gtpcv2_pdu.createSessionRequest.bearerContextGrouped[0].bearerContextIEs.ePS_Bearer_ID.ePS_Bearer_ID_Value;
/* allocate + register TEID-C on local side */
g_pars.teic := f_gtp2_allocate_teid();
@ -409,8 +412,11 @@ private altstep as_GTP2C_CreateSession_success() runs on EPDG_ConnHdlr {
fteid_u_ie := ts_GTP2C_FTEID(FTEID_IF_S2bU_ePDG_GTPU, g_pars.teid, 2,
f_inet_addr(mp_s2b_local_ip), omit);
paa := ts_GTP2C_PdnAddrAlloc_v4(f_inet_addr(g_pars.ue_ip));
GTP2.send(ts_GTP2C_CreateSessionResp({ fteid_c_ie }, paa));
bctx_ies := ts_GTP2C_BcContextIE(bid := bid,
teid_list := { fteid_u_ie },
qos := ts_GTP2C_BearerQos('09'O, 0,0,0,0),
charging_id := ts_GTP2C_ChargingID(g_pars.teic));
GTP2.send(ts_GTP2C_CreateSessionResp({ fteid_c_ie }, paa, { ts_GTP2C_BcGrouped(bctx_ies) } ));
setverdict(pass);
}
[] GTP2.receive(PDU_GTPCv2:?) -> value rx_msg {

35
library/GTPv2_Templates.ttcn
View File

@ -505,6 +505,25 @@ tr_GTP2C_FTEID(template (present) integer if_type, template (present) OCT4 teid,
}
/* 8.28 */
template (value) BearerContextIEs
ts_GTP2C_BcContextIE(template (value) uint4_t bid,
template (omit) FullyQualifiedTEID_List teid_list := omit,
template (omit) Bearer_QoS qos := ts_GTP2C_BearerQos('09'O, 0,0,0,0),
template (omit) ChargingID charging_id := omit) := {
ePS_Bearer_ID := ts_GTP2C_EpsBearerId(bid),
cause := ts_GTP2C_Cause(Request_accepted, '0'B),
ePS_Bearer_TFT := omit,
fullyQualifiedTEID := teid_list,
bearerLevel_QoS := qos,
chargingID := charging_id,
bearerFlags := omit,
transactionIdentifier := omit,
protocolConfigOptions := omit,
rAN_NASCause := omit,
additionalProtocolConfigOptions := omit,
extendedProtocolConfigOptions := omit
}
template (value) BearerContextGrouped
ts_GTP2C_BcGrouped(template (value) BearerContextIEs ies) := {
elementIdentifier := '5D'O,
@ -522,7 +541,16 @@ tr_GTP2C_BcGrouped(template (present) BearerContextIEs ies) := {
bearerContextIEs := ies
}
/* 8.29 */
template (value) ChargingID
ts_GTP2C_ChargingID(template (value) OCT4 chargingID_Value) := {
elementIdentifier := '5D'O,
lengthIndicator := 0, /* overwritten */
instance := '0000'B,
spare := '0000'B,
chargingID_Value := chargingID_Value,
additionalOctets := omit
}
/* 8.30 */
template (value) ChargingCharacteristics
@ -811,7 +839,8 @@ tr_PDU_GTP2C('00000000'O, ?, {
template (value) PDU_GTPCv2
ts_GTP2C_CreateSessionResp(template (value) FullyQualifiedTEID_List fteids,
template (value) PDN_AddressAllocation addr) :=
template (value) PDN_AddressAllocation addr,
template (omit) BearerContextGrouped_List bearerContextGrouped := omit) :=
ts_PDU_GTP2C('00000000'O, '000000'O, '21'O, {
createSessionResponse := {
cause := ts_GTP2C_Cause(Request_accepted, '0'B),
@ -824,7 +853,7 @@ ts_PDU_GTP2C('00000000'O, '000000'O, '21'O, {
ambr := omit,
linkedEPS_Bearer_ID := omit,
protocolConfigOptions := omit,
bearerContextGrouped := omit,
bearerContextGrouped := bearerContextGrouped,
recovery := omit,
chargingGatewayName := omit,
chargingGatewayAddress := omit,