-S16 egtpActvInit(Ent entity, Inst inst, Region region, Reason reason);
-S16 egtpActvTsk(Pst *pst, Buffer *mBuf);
-S16 egtpFillRspPst(Pst *pst, Pst *rspPst);
-S16 egtpCfgReq(Pst *pst, EgtpConfig egtpCfg);
-S16 egtpSrvOpenReq(Pst *pst);
-S16 egtpSrvOpenPrc(U8 sockType, EgtpTptSrvr *server);
-S16 egtpTnlMgmtReq(Pst *pst, EgtpTnlEvt tnlEvt);
-S16 egtpTnlAdd(EgtpTnlEvt tnlEvt);
-S16 egtpTnlMod(EgtpTnlEvt tnlEvt);
-S16 egtpTnlDel(EgtpTnlEvt tnlEvt);
-S16 egtpHdlDatInd(EgtpMsg msg);
-S16 egtpEncodeHdr(U8 *preEncodedHdr, EgtpMsgHdr *preDefHdr, U8 *hdrIdx);
-S16 egtpSendMsg(Buffer *mBuf);
-S16 egtpTTIInd();
-S16 egtpRecvMsg();
-S16 egtpHdlRecvData(Buffer *mBuf);
-S16 egtpDecodeHdr(Buffer *mBuf, EgtpMsg *egtpMsg);
+uint8_t duHdlEgtpDlData(EgtpMsg *egtpMsg);
+uint8_t egtpActvInit(Ent entity, Inst inst, Region region, Reason reason);
+uint8_t egtpActvTsk(Pst *pst, Buffer *mBuf);
+uint8_t egtpFillRspPst(Pst *pst, Pst *rspPst);
+uint8_t egtpCfgReq(Pst *pst, EgtpConfig egtpCfg);
+uint8_t egtpSrvOpenReq(Pst *pst);
+uint8_t egtpSrvOpenPrc(uint8_t sockType, EgtpTptSrvr *server);
+uint8_t egtpTnlMgmtReq(Pst *pst, EgtpTnlEvt tnlEvt);
+uint8_t egtpTnlAdd(EgtpTnlEvt tnlEvt);
+uint8_t egtpTnlMod(EgtpTnlEvt tnlEvt);
+uint8_t egtpTnlDel(EgtpTnlEvt tnlEvt);
+uint8_t egtpHdlDatInd(EgtpMsg msg);
+uint8_t egtpEncodeHdr(uint8_t *preEncodedHdr, EgtpMsgHdr *preDefHdr, uint8_t *hdrIdx);
+uint8_t egtpSendMsg(Buffer *mBuf);
+uint8_t egtpSlotInd();
+uint8_t egtpRecvMsg();
+uint8_t egtpHdlRecvData(Buffer *mBuf);
+uint8_t egtpDecodeHdr(Buffer *mBuf, EgtpMsg *egtpMsg);