Cedric Roux
e1d2667467
- Fix build issue of EPC - Enable event fd for EPC instead of pthread_cond - Added some new S1AP messages defintions git-svn-id: http://svn.eurecom.fr/openair4G/trunk@4506 818b1a75-f10b-46b9-bf7c-635c3b92a50f
496 lines
18 KiB
C
496 lines
18 KiB
C
#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "assertions.h"
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#include "intertask_interface.h"
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#include "queue.h"
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#include "NwLog.h"
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#include "NwGtpv2c.h"
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#include "NwGtpv2cIe.h"
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#include "NwGtpv2cMsg.h"
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#include "NwGtpv2cMsgParser.h"
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#include "sgw_lite_ie_defs.h"
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#include "s11_common.h"
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#include "s11_sgw_session_manager.h"
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#include "s11_ie_formatter.h"
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int s11_sgw_handle_create_session_request(NwGtpv2cStackHandleT *stack_p,
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NwGtpv2cUlpApiT *pUlpApi)
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{
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NwRcT rc = NW_OK;
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NwU8T offendingIeType, offendingIeInstance;
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NwU16T offendingIeLength;
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SgwCreateSessionRequest *create_session_request_p;
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MessageDef *message_p;
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NwGtpv2cMsgParserT *pMsgParser;
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DevAssert(stack_p != NULL);
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message_p = itti_alloc_new_message(TASK_S11, SGW_CREATE_SESSION_REQUEST);
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create_session_request_p = &message_p->ittiMsg.sgwCreateSessionRequest;
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/* Create a new message parser */
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rc = nwGtpv2cMsgParserNew(*stack_p, NW_GTP_CREATE_SESSION_REQ,
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s11_ie_indication_generic,
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NULL, &pMsgParser);
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DevAssert(NW_OK == rc);
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/* Imsi IE */
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rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_IMSI,
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NW_GTPV2C_IE_INSTANCE_ZERO,
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NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
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s11_imsi_ie_get,
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&create_session_request_p->imsi);
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DevAssert(NW_OK == rc);
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/* MSISDN IE */
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rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_MSISDN,
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NW_GTPV2C_IE_INSTANCE_ZERO,
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NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
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s11_msisdn_ie_get,
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&create_session_request_p->msisdn);
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DevAssert(NW_OK == rc);
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/* MEI IE */
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rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_MEI,
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NW_GTPV2C_IE_INSTANCE_ZERO,
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NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
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s11_mei_ie_get,
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&create_session_request_p->mei);
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DevAssert(NW_OK == rc);
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/* ULI IE */
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rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_ULI,
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NW_GTPV2C_IE_INSTANCE_ZERO,
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NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
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s11_uli_ie_get,
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&create_session_request_p->uli);
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DevAssert(NW_OK == rc);
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/* Serving Network IE */
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rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_SERVING_NETWORK,
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NW_GTPV2C_IE_INSTANCE_ZERO,
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NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
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s11_serving_network_ie_get,
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&create_session_request_p->serving_network);
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DevAssert(NW_OK == rc);
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/* RAT Type IE */
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rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_RAT_TYPE,
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NW_GTPV2C_IE_INSTANCE_ZERO,
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NW_GTPV2C_IE_PRESENCE_MANDATORY,
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s11_rat_type_ie_get,
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&create_session_request_p->rat_type);
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DevAssert(NW_OK == rc);
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/* Indication Flags IE */
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rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_INDICATION,
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NW_GTPV2C_IE_INSTANCE_ZERO,
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NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
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s11_indication_flags_ie_get,
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&create_session_request_p->indication_flags);
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DevAssert(NW_OK == rc);
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/* APN IE */
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rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_APN,
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NW_GTPV2C_IE_INSTANCE_ZERO,
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NW_GTPV2C_IE_PRESENCE_MANDATORY,
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s11_apn_ie_get, &create_session_request_p->apn);
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DevAssert(NW_OK == rc);
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/* Selection Mode IE */
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rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_SELECTION_MODE,
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NW_GTPV2C_IE_INSTANCE_ZERO,
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NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
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s11_ie_indication_generic, NULL);
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DevAssert(NW_OK == rc);
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/* PDN Type IE */
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rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_PDN_TYPE,
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NW_GTPV2C_IE_INSTANCE_ZERO,
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NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
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s11_pdn_type_ie_get, &create_session_request_p->pdn_type);
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DevAssert(NW_OK == rc);
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/* PAA IE */
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rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_PAA,
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NW_GTPV2C_IE_INSTANCE_ZERO,
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NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
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s11_paa_ie_get, &create_session_request_p->paa);
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DevAssert(NW_OK == rc);
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/* Sender FTEID for CP IE */
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rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_FTEID,
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NW_GTPV2C_IE_INSTANCE_ZERO,
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NW_GTPV2C_IE_PRESENCE_MANDATORY,
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s11_fteid_ie_get,
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&create_session_request_p->sender_fteid_for_cp);
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DevAssert(NW_OK == rc);
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/* PGW FTEID for CP IE */
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rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_FTEID,
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NW_GTPV2C_IE_INSTANCE_ONE,
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NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
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s11_fteid_ie_get,
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&create_session_request_p->pgw_address_for_cp);
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DevAssert(NW_OK == rc);
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/* APN Restriction IE */
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rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_APN_RESTRICTION,
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NW_GTPV2C_IE_INSTANCE_ZERO,
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NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
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s11_ie_indication_generic, NULL);
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DevAssert(NW_OK == rc);
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/* Bearer Context IE */
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rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_BEARER_CONTEXT,
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NW_GTPV2C_IE_INSTANCE_ZERO,
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NW_GTPV2C_IE_PRESENCE_MANDATORY,
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s11_bearer_context_ie_get,
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&create_session_request_p->bearer_to_create);
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DevAssert(NW_OK == rc);
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/* AMBR IE */
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rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_AMBR,
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NW_GTPV2C_IE_INSTANCE_ZERO,
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NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
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s11_ambr_ie_get,
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&create_session_request_p->ambr);
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DevAssert(NW_OK == rc);
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/* Recovery IE */
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rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_RECOVERY,
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NW_GTPV2C_IE_INSTANCE_ZERO,
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NW_GTPV2C_IE_PRESENCE_MANDATORY,
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s11_ie_indication_generic, NULL);
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DevAssert(NW_OK == rc);
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create_session_request_p->teid = nwGtpv2cMsgGetTeid(pUlpApi->hMsg);
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create_session_request_p->trxn = (void*)pUlpApi->apiInfo.initialReqIndInfo.hTrxn;
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create_session_request_p->peer_ip = pUlpApi->apiInfo.initialReqIndInfo.peerIp;
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rc = nwGtpv2cMsgParserRun(pMsgParser,
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pUlpApi->hMsg,
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&offendingIeType,
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&offendingIeInstance,
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&offendingIeLength);
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if (rc != NW_OK)
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{
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gtp_cause_t cause;
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NwGtpv2cUlpApiT ulp_req;
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memset(&ulp_req, 0, sizeof(NwGtpv2cUlpApiT));
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memset(&cause , 0, sizeof(gtp_cause_t));
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cause.offending_ie_type = offendingIeType;
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cause.offending_ie_length = offendingIeLength;
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cause.offending_ie_instance = offendingIeInstance;
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switch (rc)
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{
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case NW_GTPV2C_MANDATORY_IE_MISSING:
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S11_DEBUG("Mandatory IE type '%u' of instance '%u' missing!\n",
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offendingIeType, offendingIeLength);
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cause.cause_value = NW_GTPV2C_CAUSE_MANDATORY_IE_MISSING;
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break;
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default:
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S11_DEBUG("Unknown message parse error!\n");
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cause.cause_value = 0;
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break;
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}
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/*
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* Send Create session response with failure to Gtpv2c Stack Instance
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*/
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ulp_req.apiType = NW_GTPV2C_ULP_API_TRIGGERED_RSP;
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ulp_req.apiInfo.triggeredRspInfo.hTrxn = pUlpApi->apiInfo.initialReqIndInfo.hTrxn;
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rc = nwGtpv2cMsgNew(*stack_p,
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NW_TRUE,
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NW_GTP_CREATE_SESSION_RSP,
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0,
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nwGtpv2cMsgGetSeqNumber(pUlpApi->hMsg),
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&(ulp_req.hMsg));
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s11_cause_ie_set(&(ulp_req.hMsg), &cause);
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S11_DEBUG("Received NW_GTP_CREATE_SESSION_REQ, Sending NW_GTP_CREATE_SESSION_RSP!\n");
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rc = nwGtpv2cProcessUlpReq(*stack_p, &ulp_req);
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DevAssert(NW_OK == rc);
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free(message_p);
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rc = nwGtpv2cMsgParserDelete(*stack_p, pMsgParser);
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DevAssert(NW_OK == rc);
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rc = nwGtpv2cMsgDelete(*stack_p, (pUlpApi->hMsg));
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DevAssert(NW_OK == rc);
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return 0;
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}
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rc = nwGtpv2cMsgParserDelete(*stack_p, pMsgParser);
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DevAssert(NW_OK == rc);
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rc = nwGtpv2cMsgDelete(*stack_p, (pUlpApi->hMsg));
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DevAssert(NW_OK == rc);
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return itti_send_msg_to_task(TASK_SPGW_APP, INSTANCE_DEFAULT, message_p);
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}
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int s11_sgw_handle_create_session_response(
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NwGtpv2cStackHandleT *stack_p,
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SgwCreateSessionResponse *create_session_response_p)
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{
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NwRcT rc;
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NwGtpv2cUlpApiT ulp_req;
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NwGtpv2cTrxnHandleT trxn;
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gtp_cause_t cause;
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DevAssert(create_session_response_p != NULL);
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DevAssert(stack_p != NULL);
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trxn = (NwGtpv2cTrxnHandleT)create_session_response_p->trxn;
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DevAssert(trxn != 0);
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/* Create a tunnel for the GTPv2-C stack */
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memset(&ulp_req, 0, sizeof(NwGtpv2cUlpApiT));
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ulp_req.apiType = NW_GTPV2C_ULP_CREATE_LOCAL_TUNNEL;
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ulp_req.apiInfo.createLocalTunnelInfo.teidLocal = create_session_response_p->s11_sgw_teid.teid;
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ulp_req.apiInfo.createLocalTunnelInfo.peerIp = create_session_response_p->peer_ip;
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rc = nwGtpv2cProcessUlpReq(*stack_p, &ulp_req);
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DevAssert(NW_OK == rc);
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/* Prepare a create session response to send to MME.
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*/
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memset(&ulp_req, 0, sizeof(NwGtpv2cUlpApiT));
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memset(&cause , 0, sizeof(gtp_cause_t));
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ulp_req.apiType = NW_GTPV2C_ULP_API_TRIGGERED_RSP;
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ulp_req.apiInfo.triggeredRspInfo.hTrxn = trxn;
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rc = nwGtpv2cMsgNew(*stack_p,
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NW_TRUE,
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NW_GTP_CREATE_SESSION_RSP,
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0,
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0,
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&(ulp_req.hMsg));
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DevAssert(NW_OK == rc);
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/* Set the remote TEID */
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rc = nwGtpv2cMsgSetTeid(ulp_req.hMsg, create_session_response_p->teid);
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DevAssert(NW_OK == rc);
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cause.cause_value = (uint8_t)create_session_response_p->cause;
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s11_cause_ie_set(&(ulp_req.hMsg), &cause);
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rc = nwGtpv2cMsgAddIeFteid((ulp_req.hMsg),
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NW_GTPV2C_IE_INSTANCE_ZERO,
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S1_U_SGW_GTP_U,
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create_session_response_p->s11_sgw_teid.teid,
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0xC0A80EA2,
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NULL);
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s11_paa_ie_set(&(ulp_req.hMsg), &create_session_response_p->paa);
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/* Put 0 for now i.e. no existing context or restriction */
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s11_apn_restriction_ie_set(&(ulp_req.hMsg), 0);
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s11_bearer_context_created_ie_set(
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&(ulp_req.hMsg),
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&create_session_response_p->bearer_context_created);
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rc = nwGtpv2cProcessUlpReq(*stack_p, &ulp_req);
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DevAssert(NW_OK == rc);
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return 0;
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}
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int s11_sgw_handle_delete_session_request(NwGtpv2cStackHandleT *stack_p,
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NwGtpv2cUlpApiT *pUlpApi)
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{
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NwRcT rc = NW_OK;
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NwU8T offendingIeType, offendingIeInstance;
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NwU16T offendingIeLength;
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SgwDeleteSessionRequest *delete_session_request_p;
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MessageDef *message_p;
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NwGtpv2cMsgParserT *pMsgParser;
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DevAssert(stack_p != NULL);
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message_p = itti_alloc_new_message(TASK_S11, SGW_DELETE_SESSION_REQUEST);
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delete_session_request_p = &message_p->ittiMsg.sgwDeleteSessionRequest;
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/* Create a new message parser */
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rc = nwGtpv2cMsgParserNew(*stack_p, NW_GTP_DELETE_SESSION_REQ,
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s11_ie_indication_generic,
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NULL, &pMsgParser);
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DevAssert(NW_OK == rc);
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/* MME FTEID for CP IE */
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rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_FTEID,
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NW_GTPV2C_IE_INSTANCE_ZERO,
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NW_GTPV2C_IE_PRESENCE_OPTIONAL,
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s11_fteid_ie_get,
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&delete_session_request_p->sender_fteid_for_cp);
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DevAssert(NW_OK == rc);
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/* Linked EPS Bearer Id IE
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* This information element shall not be present for TAU/RAU/Handover with
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* S-GW relocation procedures.
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*/
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rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_EBI,
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NW_GTPV2C_IE_INSTANCE_ZERO,
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NW_GTPV2C_IE_PRESENCE_OPTIONAL,
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s11_ebi_ie_get,
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&delete_session_request_p->lbi);
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DevAssert(NW_OK == rc);
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/* Indication Flags IE
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* For a Delete Session Request on S11 interface,
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* only the Operation Indication flag might be present.
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*/
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rc = nwGtpv2cMsgParserAddIe(pMsgParser, NW_GTPV2C_IE_INDICATION,
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NW_GTPV2C_IE_INSTANCE_ZERO,
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NW_GTPV2C_IE_PRESENCE_CONDITIONAL,
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s11_indication_flags_ie_get,
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&delete_session_request_p->indication_flags);
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DevAssert(NW_OK == rc);
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delete_session_request_p->teid = nwGtpv2cMsgGetTeid(pUlpApi->hMsg);
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delete_session_request_p->trxn = (void*)pUlpApi->apiInfo.initialReqIndInfo.hTrxn;
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delete_session_request_p->peer_ip = pUlpApi->apiInfo.initialReqIndInfo.peerIp;
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rc = nwGtpv2cMsgParserRun(pMsgParser,
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pUlpApi->hMsg,
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&offendingIeType,
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&offendingIeInstance,
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&offendingIeLength);
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if (rc != NW_OK) {
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NwGtpv2cUlpApiT ulp_req;
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gtp_cause_t cause;
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memset(&ulp_req, 0, sizeof(NwGtpv2cUlpApiT));
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memset(&cause , 0, sizeof(gtp_cause_t));
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cause.offending_ie_type = offendingIeType;
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cause.offending_ie_length = offendingIeLength;
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cause.offending_ie_instance = offendingIeInstance;
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switch (rc)
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{
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case NW_GTPV2C_MANDATORY_IE_MISSING:
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S11_DEBUG("Mandatory IE type '%u' of instance '%u' missing!\n",
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offendingIeType, offendingIeLength);
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cause.cause_value = NW_GTPV2C_CAUSE_MANDATORY_IE_MISSING;
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break;
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default:
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S11_DEBUG("Unknown message parse error!\n");
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cause.cause_value = 0;
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break;
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}
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/*
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* Send Create session response with failure to Gtpv2c Stack Instance
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*/
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ulp_req.apiType = NW_GTPV2C_ULP_API_TRIGGERED_RSP;
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ulp_req.apiInfo.triggeredRspInfo.hTrxn = pUlpApi->apiInfo.initialReqIndInfo.hTrxn;
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rc = nwGtpv2cMsgNew(*stack_p,
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NW_TRUE,
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NW_GTP_DELETE_SESSION_RSP,
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0,
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nwGtpv2cMsgGetSeqNumber(pUlpApi->hMsg),
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&(ulp_req.hMsg));
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/* Adding the cause */
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s11_cause_ie_set(&(ulp_req.hMsg), &cause);
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S11_DEBUG("Received NW_GTP_DELETE_SESSION_REQ, Sending NW_GTP_DELETE_SESSION_RSP!\n");
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rc = nwGtpv2cProcessUlpReq(*stack_p, &ulp_req);
|
|
DevAssert(NW_OK == rc);
|
|
|
|
free(message_p);
|
|
|
|
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_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;
|
|
}
|