int
s11_sgw_handle_create_session_response (
NwGtpv2cStackHandleT * stack_p,
SgwCreateSessionResponse * create_session_response_p)
{
NwRcT rc;
NwGtpv2cUlpApiT ulp_req;
NwGtpv2cTrxnHandleT trxn;
gtp_cause_t cause;
DevAssert (create_session_response_p != NULL);
DevAssert (stack_p != NULL);
trxn = (NwGtpv2cTrxnHandleT) create_session_response_p->trxn;
DevAssert (trxn != 0);
/*
* Create a tunnel for the GTPv2-C stack
*/
memset (&ulp_req, 0, sizeof (NwGtpv2cUlpApiT));
ulp_req.apiType = NW_GTPV2C_ULP_CREATE_LOCAL_TUNNEL;
ulp_req.apiInfo.createLocalTunnelInfo.teidLocal = create_session_response_p->s11_sgw_teid.teid;
ulp_req.apiInfo.createLocalTunnelInfo.peerIp = create_session_response_p->peer_ip;
rc = nwGtpv2cProcessUlpReq (*stack_p, &ulp_req);
DevAssert (NW_OK == rc);
/*
* Prepare a create session response to send to MME.
*/
memset (&ulp_req, 0, sizeof (NwGtpv2cUlpApiT));
memset (&cause, 0, sizeof (gtp_cause_t));
ulp_req.apiType = NW_GTPV2C_ULP_API_TRIGGERED_RSP;
ulp_req.apiInfo.triggeredRspInfo.hTrxn = trxn;
rc = nwGtpv2cMsgNew (*stack_p, NW_TRUE, NW_GTP_CREATE_SESSION_RSP, 0, 0, &(ulp_req.hMsg));
DevAssert (NW_OK == rc);
/*
* Set the remote TEID
*/
rc = nwGtpv2cMsgSetTeid (ulp_req.hMsg, create_session_response_p->teid);
DevAssert (NW_OK == rc);
cause.cause_value = (uint8_t) create_session_response_p->cause;
s11_cause_ie_set (&(ulp_req.hMsg), &cause);
rc = nwGtpv2cMsgAddIeFteid ((ulp_req.hMsg), NW_GTPV2C_IE_INSTANCE_ZERO, S1_U_SGW_GTP_U, create_session_response_p->s11_sgw_teid.teid, 0xC0A80EA2, NULL);
s11_paa_ie_set (&(ulp_req.hMsg), &create_session_response_p->paa);
/*
* Put 0 for now i.e. no existing context or restriction
*/
s11_apn_restriction_ie_set (&(ulp_req.hMsg), 0);
s11_bearer_context_created_ie_set (&(ulp_req.hMsg), &create_session_response_p->bearer_context_created);
rc = nwGtpv2cProcessUlpReq (*stack_p, &ulp_req);
DevAssert (NW_OK == rc);
return 0;
}
static NwRcT
nwSaeGwUeSgwSendDeleteSessionResponseToMme(NwSaeGwUeT* thiz,
NwGtpv2cTrxnHandleT hTrxn,
NwGtpv2cErrorT *pError,
NwSaeGwUeSgwDeleteSessionRequestT *pDeleteSessReq)
{
NwRcT rc;
NwGtpv2cUlpApiT ulpReq;
rc = nwGtpv2cMsgNew( thiz->hGtpv2cStackSgwS11,
NW_TRUE, /* TIED present*/
NW_GTP_DELETE_SESSION_RSP, /* Msg Type */
thiz->s11cTunnel.fteidMme.teidOrGreKey, /* TEID */
0, /* Seq Number */
&(ulpReq.hMsg));
NW_ASSERT( NW_OK == rc );
rc = nwGtpv2cMsgAddIeCause((ulpReq.hMsg), 0, pError->cause, NW_GTPV2C_CAUSE_BIT_NONE, pError->offendingIe.type, pError->offendingIe.instance);
NW_ASSERT( NW_OK == rc );
/*
* Send Message Request to Gtpv2c Stack Instance
*/
ulpReq.apiType = NW_GTPV2C_ULP_API_TRIGGERED_RSP;
ulpReq.apiInfo.triggeredRspInfo.hTrxn = hTrxn;
rc = nwGtpv2cProcessUlpReq(thiz->hGtpv2cStackSgwS11, &ulpReq);
NW_ASSERT( NW_OK == rc );
NW_UE_LOG(NW_LOG_LEVEL_INFO, "Delete Session Response sent to peer!");
return NW_OK;
}
int
s11_sgw_handle_delete_session_response (
NwGtpv2cStackHandleT * stack_p,
SgwDeleteSessionResponse * delete_session_response_p)
{
NwRcT rc;
NwGtpv2cUlpApiT ulp_req;
NwGtpv2cTrxnHandleT trxn;
gtp_cause_t cause;
DevAssert (delete_session_response_p != NULL);
DevAssert (stack_p != NULL);
trxn = (NwGtpv2cTrxnHandleT) delete_session_response_p->trxn;
DevAssert (trxn != 0);
/*
* Prepare a create session response to send to MME.
*/
memset (&ulp_req, 0, sizeof (NwGtpv2cUlpApiT));
memset (&cause, 0, sizeof (gtp_cause_t));
ulp_req.apiType = NW_GTPV2C_ULP_API_TRIGGERED_RSP;
ulp_req.apiInfo.triggeredRspInfo.hTrxn = trxn;
rc = nwGtpv2cMsgNew (*stack_p, NW_TRUE, NW_GTP_DELETE_SESSION_RSP, 0, 0, &(ulp_req.hMsg));
DevAssert (NW_OK == rc);
/*
* Set the remote TEID
*/
rc = nwGtpv2cMsgSetTeid (ulp_req.hMsg, delete_session_response_p->teid);
DevAssert (NW_OK == rc);
cause.cause_value = delete_session_response_p->cause;
s11_cause_ie_set (&(ulp_req.hMsg), &cause);
rc = nwGtpv2cProcessUlpReq (*stack_p, &ulp_req);
DevAssert (NW_OK == rc);
return 0;
}
static NwRcT
nwSaeGwUeSgwSendModifyBearerResponseToMme(NwSaeGwUeT* thiz,
NwGtpv2cTrxnHandleT hTrxn,
NwGtpv2cErrorT *pError,
NwSaeGwUeSgwModifyBearerRequestT *pModifyBearerReq)
{
NwRcT rc;
NwGtpv2cUlpApiT ulpReq;
rc = nwGtpv2cMsgNew( thiz->hGtpv2cStackSgwS11,
NW_TRUE, /* TIED present*/
NW_GTP_MODIFY_BEARER_RSP, /* Msg Type */
thiz->s11cTunnel.fteidMme.teidOrGreKey, /* TEID */
0, /* Seq Number */
&(ulpReq.hMsg));
NW_ASSERT( NW_OK == rc );
rc = nwGtpv2cMsgAddIeCause((ulpReq.hMsg), 0, pError->cause, NW_GTPV2C_CAUSE_BIT_NONE, pError->offendingIe.type, pError->offendingIe.instance);
NW_ASSERT( NW_OK == rc );
if(pError->cause == NW_GTPV2C_CAUSE_REQUEST_ACCEPTED)
{
rc = nwGtpv2cMsgGroupedIeStart((ulpReq.hMsg), NW_GTPV2C_IE_BEARER_CONTEXT, 0);
NW_ASSERT( NW_OK == rc );
rc = nwGtpv2cMsgAddIeTV1((ulpReq.hMsg), NW_GTPV2C_IE_EBI, 0, 0);
NW_ASSERT( NW_OK == rc );
rc = nwGtpv2cMsgAddIeCause((ulpReq.hMsg), 0, pError->cause, NW_GTPV2C_CAUSE_BIT_NONE, 0, 0);
NW_ASSERT( NW_OK == rc );
rc = nwGtpv2cMsgAddIeFteid((ulpReq.hMsg),
0,
NW_GTPV2C_IFTYPE_S1U_SGW_GTPU,
((NwU32T)(thiz->epsBearer[pModifyBearerReq->epsBearerTobeCreated.ebi].s1uTunnel.fteidSgw.teidOrGreKey)),
((NwU32T)(thiz->epsBearer[pModifyBearerReq->epsBearerTobeCreated.ebi].s1uTunnel.fteidSgw.ipv4Addr)),
NULL);
NW_ASSERT( NW_OK == rc );
rc = nwGtpv2cMsgGroupedIeEnd((ulpReq.hMsg));
NW_ASSERT( NW_OK == rc );
}
/*
* Send Message Request to Gtpv2c Stack Instance
*/
ulpReq.apiType = NW_GTPV2C_ULP_API_TRIGGERED_RSP;
ulpReq.apiInfo.triggeredRspInfo.hTrxn = hTrxn;
rc = nwGtpv2cProcessUlpReq(thiz->hGtpv2cStackSgwS11, &ulpReq);
NW_ASSERT( NW_OK == rc );
NW_UE_LOG(NW_LOG_LEVEL_INFO, "Modify Bearer Response sent to peer!");
return rc;
}
int s11_sgw_handle_create_session_request(NwGtpv2cStackHandleT *stack_p,
NwGtpv2cUlpApiT *pUlpApi)
{
NwRcT rc = NW_OK;
NwU8T offendingIeType, offendingIeInstance;
NwU16T offendingIeLength;
SgwCreateSessionRequest *create_session_request_p;
MessageDef *message_p;
NwGtpv2cMsgParserT *pMsgParser;
DevAssert(stack_p != NULL);
message_p = itti_alloc_new_message(TASK_S11, SGW_CREATE_SESSION_REQUEST);
create_session_request_p = &message_p->ittiMsg.sgwCreateSessionRequest;
/* Create a new message parser */
rc = nwGtpv2cMsgParserNew(*stack_p, NW_GTP_CREATE_SESSION_REQ,
s11_ie_indication_generic,
NULL, &pMsgParser);
DevAssert(NW_OK == rc);
/* Imsi IE */
rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_IMSI,
NW_GTPV2C_IE_INSTANCE_ZERO,
NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
s11_imsi_ie_get,
&create_session_request_p->imsi);
DevAssert(NW_OK == rc);
/* MSISDN IE */
rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_MSISDN,
NW_GTPV2C_IE_INSTANCE_ZERO,
NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
s11_msisdn_ie_get,
&create_session_request_p->msisdn);
DevAssert(NW_OK == rc);
/* MEI IE */
rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_MEI,
NW_GTPV2C_IE_INSTANCE_ZERO,
NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
s11_mei_ie_get,
&create_session_request_p->mei);
DevAssert(NW_OK == rc);
/* ULI IE */
rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_ULI,
NW_GTPV2C_IE_INSTANCE_ZERO,
NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
s11_uli_ie_get,
&create_session_request_p->uli);
DevAssert(NW_OK == rc);
/* Serving Network IE */
rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_SERVING_NETWORK,
NW_GTPV2C_IE_INSTANCE_ZERO,
NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
s11_serving_network_ie_get,
&create_session_request_p->serving_network);
DevAssert(NW_OK == rc);
/* RAT Type IE */
rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_RAT_TYPE,
NW_GTPV2C_IE_INSTANCE_ZERO,
NW_GTPV2C_IE_PRESENCE_MANDATORY,
s11_rat_type_ie_get,
&create_session_request_p->rat_type);
DevAssert(NW_OK == rc);
/* Indication Flags IE */
rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_INDICATION,
NW_GTPV2C_IE_INSTANCE_ZERO,
NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
s11_indication_flags_ie_get,
&create_session_request_p->indication_flags);
DevAssert(NW_OK == rc);
/* APN IE */
rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_APN,
NW_GTPV2C_IE_INSTANCE_ZERO,
NW_GTPV2C_IE_PRESENCE_MANDATORY,
s11_apn_ie_get, &create_session_request_p->apn);
DevAssert(NW_OK == rc);
/* Selection Mode IE */
rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_SELECTION_MODE,
NW_GTPV2C_IE_INSTANCE_ZERO,
NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
s11_ie_indication_generic, NULL);
DevAssert(NW_OK == rc);
/* PDN Type IE */
rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_PDN_TYPE,
NW_GTPV2C_IE_INSTANCE_ZERO,
NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
s11_pdn_type_ie_get, &create_session_request_p->pdn_type);
DevAssert(NW_OK == rc);
/* PAA IE */
rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_PAA,
NW_GTPV2C_IE_INSTANCE_ZERO,
NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
s11_paa_ie_get, &create_session_request_p->paa);
DevAssert(NW_OK == rc);
/* Sender FTEID for CP IE */
rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_FTEID,
NW_GTPV2C_IE_INSTANCE_ZERO,
NW_GTPV2C_IE_PRESENCE_MANDATORY,
s11_fteid_ie_get,
&create_session_request_p->sender_fteid_for_cp);
DevAssert(NW_OK == rc);
/* PGW FTEID for CP IE */
rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_FTEID,
NW_GTPV2C_IE_INSTANCE_ONE,
NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
s11_fteid_ie_get,
&create_session_request_p->pgw_address_for_cp);
DevAssert(NW_OK == rc);
/* APN Restriction IE */
rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_APN_RESTRICTION,
NW_GTPV2C_IE_INSTANCE_ZERO,
NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
s11_ie_indication_generic, NULL);
DevAssert(NW_OK == rc);
/* Bearer Context IE */
rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_BEARER_CONTEXT,
NW_GTPV2C_IE_INSTANCE_ZERO,
NW_GTPV2C_IE_PRESENCE_MANDATORY,
s11_bearer_context_ie_get,
&create_session_request_p->bearer_to_create);
DevAssert(NW_OK == rc);
/* AMBR IE */
rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_AMBR,
NW_GTPV2C_IE_INSTANCE_ZERO,
NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
s11_ambr_ie_get,
&create_session_request_p->ambr);
DevAssert(NW_OK == rc);
/* Recovery IE */
rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_RECOVERY,
NW_GTPV2C_IE_INSTANCE_ZERO,
NW_GTPV2C_IE_PRESENCE_MANDATORY,
s11_ie_indication_generic, NULL);
DevAssert(NW_OK == rc);
create_session_request_p->teid = nwGtpv2cMsgGetTeid(pUlpApi->hMsg);
create_session_request_p->trxn = (void*)pUlpApi->apiInfo.initialReqIndInfo.hTrxn;
create_session_request_p->peer_ip = pUlpApi->apiInfo.initialReqIndInfo.peerIp;
rc = nwGtpv2cMsgParserRun(pMsgParser,
pUlpApi->hMsg,
&offendingIeType,
&offendingIeInstance,
&offendingIeLength);
if (rc != NW_OK)
{
gtp_cause_t cause;
NwGtpv2cUlpApiT ulp_req;
memset(&ulp_req, 0, sizeof(NwGtpv2cUlpApiT));
memset(&cause , 0, sizeof(gtp_cause_t));
cause.offending_ie_type = offendingIeType;
cause.offending_ie_length = offendingIeLength;
cause.offending_ie_instance = offendingIeInstance;
switch (rc)
{
case NW_GTPV2C_MANDATORY_IE_MISSING:
S11_DEBUG("Mandatory IE type '%u' of instance '%u' missing!\n",
offendingIeType, offendingIeLength);
cause.cause_value = NW_GTPV2C_CAUSE_MANDATORY_IE_MISSING;
break;
default:
S11_DEBUG("Unknown message parse error!\n");
cause.cause_value = 0;
break;
}
/*
* Send Create session response with failure to Gtpv2c Stack Instance
*/
ulp_req.apiType = NW_GTPV2C_ULP_API_TRIGGERED_RSP;
ulp_req.apiInfo.triggeredRspInfo.hTrxn = pUlpApi->apiInfo.initialReqIndInfo.hTrxn;
rc = nwGtpv2cMsgNew(*stack_p,
NW_TRUE,
NW_GTP_CREATE_SESSION_RSP,
0,
nwGtpv2cMsgGetSeqNumber(pUlpApi->hMsg),
&(ulp_req.hMsg));
s11_cause_ie_set(&(ulp_req.hMsg), &cause);
S11_DEBUG("Received NW_GTP_CREATE_SESSION_REQ, Sending NW_GTP_CREATE_SESSION_RSP!\n");
rc = nwGtpv2cProcessUlpReq(*stack_p, &ulp_req);
DevAssert(NW_OK == rc);
itti_free(ITTI_MSG_ORIGIN_ID(message_p), message_p);
message_p = NULL;
rc = nwGtpv2cMsgParserDelete(*stack_p, pMsgParser);
DevAssert(NW_OK == rc);
rc = nwGtpv2cMsgDelete(*stack_p, (pUlpApi->hMsg));
DevAssert(NW_OK == rc);
return 0;
}
rc = nwGtpv2cMsgParserDelete(*stack_p, pMsgParser);
DevAssert(NW_OK == rc);
rc = nwGtpv2cMsgDelete(*stack_p, (pUlpApi->hMsg));
DevAssert(NW_OK == rc);
return itti_send_msg_to_task(TASK_SPGW_APP, INSTANCE_DEFAULT, message_p);
}
int s11_sgw_handle_delete_session_request(NwGtpv2cStackHandleT *stack_p,
NwGtpv2cUlpApiT *pUlpApi)
{
NwRcT rc = NW_OK;
NwU8T offendingIeType, offendingIeInstance;
NwU16T offendingIeLength;
SgwDeleteSessionRequest *delete_session_request_p;
MessageDef *message_p;
NwGtpv2cMsgParserT *pMsgParser;
DevAssert(stack_p != NULL);
message_p = itti_alloc_new_message(TASK_S11, SGW_DELETE_SESSION_REQUEST);
delete_session_request_p = &message_p->ittiMsg.sgwDeleteSessionRequest;
/* Create a new message parser */
rc = nwGtpv2cMsgParserNew(*stack_p, NW_GTP_DELETE_SESSION_REQ,
s11_ie_indication_generic,
NULL, &pMsgParser);
DevAssert(NW_OK == rc);
/* MME FTEID for CP IE */
rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_FTEID,
NW_GTPV2C_IE_INSTANCE_ZERO,
NW_GTPV2C_IE_PRESENCE_OPTIONAL,
s11_fteid_ie_get,
&delete_session_request_p->sender_fteid_for_cp);
DevAssert(NW_OK == rc);
/* Linked EPS Bearer Id IE
* This information element shall not be present for TAU/RAU/Handover with
* S-GW relocation procedures.
*/
rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_EBI,
NW_GTPV2C_IE_INSTANCE_ZERO,
NW_GTPV2C_IE_PRESENCE_OPTIONAL,
s11_ebi_ie_get,
&delete_session_request_p->lbi);
DevAssert(NW_OK == rc);
/* Indication Flags IE
* For a Delete Session Request on S11 interface,
* only the Operation Indication flag might be present.
*/
rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_INDICATION,
NW_GTPV2C_IE_INSTANCE_ZERO,
NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
s11_indication_flags_ie_get,
&delete_session_request_p->indication_flags);
DevAssert(NW_OK == rc);
delete_session_request_p->teid = nwGtpv2cMsgGetTeid(pUlpApi->hMsg);
delete_session_request_p->trxn = (void*)pUlpApi->apiInfo.initialReqIndInfo.hTrxn;
delete_session_request_p->peer_ip = pUlpApi->apiInfo.initialReqIndInfo.peerIp;
rc = nwGtpv2cMsgParserRun(pMsgParser,
pUlpApi->hMsg,
&offendingIeType,
&offendingIeInstance,
&offendingIeLength);
if (rc != NW_OK) {
NwGtpv2cUlpApiT ulp_req;
gtp_cause_t cause;
memset(&ulp_req, 0, sizeof(NwGtpv2cUlpApiT));
memset(&cause , 0, sizeof(gtp_cause_t));
cause.offending_ie_type = offendingIeType;
cause.offending_ie_length = offendingIeLength;
cause.offending_ie_instance = offendingIeInstance;
switch (rc)
{
case NW_GTPV2C_MANDATORY_IE_MISSING:
S11_DEBUG("Mandatory IE type '%u' of instance '%u' missing!\n",
offendingIeType, offendingIeLength);
cause.cause_value = NW_GTPV2C_CAUSE_MANDATORY_IE_MISSING;
break;
default:
S11_DEBUG("Unknown message parse error!\n");
cause.cause_value = 0;
break;
}
/*
* Send Create session response with failure to Gtpv2c Stack Instance
*/
ulp_req.apiType = NW_GTPV2C_ULP_API_TRIGGERED_RSP;
ulp_req.apiInfo.triggeredRspInfo.hTrxn = pUlpApi->apiInfo.initialReqIndInfo.hTrxn;
rc = nwGtpv2cMsgNew(*stack_p,
NW_TRUE,
NW_GTP_DELETE_SESSION_RSP,
0,
nwGtpv2cMsgGetSeqNumber(pUlpApi->hMsg),
&(ulp_req.hMsg));
/* Adding the cause */
s11_cause_ie_set(&(ulp_req.hMsg), &cause);
S11_DEBUG("Received NW_GTP_DELETE_SESSION_REQ, Sending NW_GTP_DELETE_SESSION_RSP!\n");
rc = nwGtpv2cProcessUlpReq(*stack_p, &ulp_req);
DevAssert(NW_OK == rc);
itti_free(ITTI_MSG_ORIGIN_ID(message_p), message_p);
message_p = NULL;
rc = nwGtpv2cMsgParserDelete(*stack_p, pMsgParser);
DevAssert(NW_OK == rc);
rc = nwGtpv2cMsgDelete(*stack_p, (pUlpApi->hMsg));
DevAssert(NW_OK == rc);
return 0;
}
rc = nwGtpv2cMsgParserDelete(*stack_p, pMsgParser);
DevAssert(NW_OK == rc);
rc = nwGtpv2cMsgDelete(*stack_p, (pUlpApi->hMsg));
DevAssert(NW_OK == rc);
return itti_send_msg_to_task(TASK_SPGW_APP, INSTANCE_DEFAULT, message_p);
}