1 /*******************************************************************************
2 ################################################################################
3 # Copyright (c) [2017-2019] [Radisys] #
5 # Licensed under the Apache License, Version 2.0 (the "License"); #
6 # you may not use this file except in compliance with the License. #
7 # You may obtain a copy of the License at #
9 # http://www.apache.org/licenses/LICENSE-2.0 #
11 # Unless required by applicable law or agreed to in writing, software #
12 # distributed under the License is distributed on an "AS IS" BASIS, #
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. #
14 # See the License for the specific language governing permissions and #
15 # limitations under the License. #
16 ################################################################################
17 *******************************************************************************/
19 /* This file contains all EGTP related functionality */
21 #include "common_def.h"
22 #include "OCTET_STRING.h"
23 #include "cu_stub_sctp.h"
24 #include "cu_f1ap_msg_hdl.h"
25 #include "cu_stub_egtp.h"
33 /**************************************************************************
34 * @brief Task Initiation callback function.
38 * Function : egtpActvInit
41 * This function is supplied as one of parameters during EGTP's
42 * task registration. SSI will invoke this function once, after
43 * it creates and attaches this TAPA Task to a system task.
45 * @param[in] Ent entity, the entity ID of this task.
46 * @param[in] Inst inst, the instance ID of this task.
47 * @param[in] Region region, the region ID registered for memory
49 * @param[in] Reason reason.
50 * @return ROK - success
52 ***************************************************************************/
55 DU_LOG("\n\nDEBUG --> EGTP : Initializing");
56 memset (&egtpCb, 0, sizeof(EgtpGlobalCb));
58 //Initializing with INVALID value
59 memset(egtpCb.gCntPdu, 0xFF , sizeof(uint8_t)*(MAX_TEID+1));
60 protType = CM_INET_PROTO_UDP;
65 /**************************************************************************
66 * @brief Task Activation callback function.
70 * Function : egtpActvTsk
73 * This function handles all EGTP messages received
74 * This API is registered with SSI during the
75 * Task Registration of DU APP.
77 * @param[in] Pst *pst, Post structure of the primitive.
78 * @param[in] Buffer *mBuf, Packed primitive parameters in the
80 * @return ROK - success
83 ***************************************************************************/
88 egtpCb.egtpCfg = cuCb.cuCfgParams.egtpParams;
92 DU_LOG("\nERROR --> EGTP : Configuration failed");
96 ret = cuEgtpSrvOpenReq();
99 DU_LOG("\nERROR --> EGTP : Transport server open request failed");
106 /**************************************************************************
107 * @brief EGTP server configuration
111 * Function : egtpCfgReq
114 * This function handles EGTP configuration request.
116 * @return ROK - success
119 * ***********************************************************************/
122 uint8_t ret, destIdx =0;
124 memcpy(&egtpCb.egtpCfg, &cuCb.cuCfgParams.egtpParams, sizeof(CuEgtpParams));
126 for(destIdx=0; destIdx < egtpCb.egtpCfg.numDu; destIdx++)
128 egtpCb.recvTptSrvr.addr.address = CM_INET_NTOH_UINT32(egtpCb.egtpCfg.egtpAssoc[destIdx].localIp.ipV4Addr);
129 egtpCb.recvTptSrvr.addr.port = EGTP_RECVR_PORT;
131 egtpCb.dstCb[destIdx].duId = destIdx+1;
132 egtpCb.dstCb[destIdx].dstIp = CM_INET_NTOH_UINT32(egtpCb.egtpCfg.egtpAssoc[destIdx].destIp.ipV4Addr);
133 egtpCb.dstCb[destIdx].dstPort = egtpCb.egtpCfg.egtpAssoc[destIdx].destPort;
134 egtpCb.dstCb[destIdx].sendTptSrvr.addr.address = CM_INET_NTOH_UINT32(egtpCb.egtpCfg.egtpAssoc[destIdx].localIp.ipV4Addr);
135 egtpCb.dstCb[destIdx].sendTptSrvr.addr.port = egtpCb.egtpCfg.egtpAssoc[destIdx].localPort;
136 egtpCb.dstCb[destIdx].numTunn = 0;
138 ret = cmHashListInit(&(egtpCb.dstCb[destIdx].teIdLst), 1024, sizeof(EgtpTeIdCb), FALSE, CM_HASH_KEYTYPE_UINT32_MOD, CU_APP_MEM_REG, CU_POOL);
142 DU_LOG("\nERROR --> EGTP : TeId hash list initialization failed");
147 DU_LOG("\nINFO --> EGTP : Configuration successful");
150 egtpCb.numDu = egtpCb.egtpCfg.numDu;
155 /**************************************************************************
156 * @brief EGTP server open request
160 * Function : egtpSrvOpenReq
163 * This function handles EGTP open server request.
164 * It opens udp socket to receive/send msgs.
166 * @param[in] Pst *pst, post structure
167 * @return ROK - success
170 ***************************************************************************/
172 S16 cuEgtpSrvOpenReq(Pst *pst)
175 uint8_t ret, destIdx;
177 DU_LOG("\nINFO --> EGTP : Received open server request");
179 sockType = CM_INET_DGRAM;
180 if((ret = (cmInetSocket(sockType, &(egtpCb.recvTptSrvr.sockFd), protType))) != ROK)
182 DU_LOG("\nERROR --> EGTP : Failed to open UDP socket");
186 ret = cmInetBind(&(egtpCb.recvTptSrvr.sockFd), &(egtpCb.recvTptSrvr.addr));
189 DU_LOG("\nERROR --> EGTP : Failed to bind socket");
193 for(destIdx=0; destIdx < egtpCb.egtpCfg.numDu; destIdx++)
195 if(ret = (cmInetSocket(sockType, &(egtpCb.dstCb[destIdx].sendTptSrvr.sockFd), protType)) != ROK)
197 DU_LOG("\nERROR --> EGTP : Failed to open UDP socket");
201 ret = cmInetBind(&(egtpCb.dstCb[destIdx].sendTptSrvr.sockFd), &(egtpCb.dstCb[destIdx].sendTptSrvr.addr));
204 DU_LOG("\nERROR --> EGTP : Failed to bind socket");
208 /* TODO: set socket options */
210 DU_LOG("\nINFO --> EGTP : Receiver socket[%d] and Sender socket[%d] open", egtpCb.recvTptSrvr.sockFd.fd,\
211 egtpCb.dstCb[destIdx].sendTptSrvr.sockFd.fd);
214 } /* cuEgtpSrvOpenReq */
217 /**************************************************************************
218 * @brief EGTP tunnel management request
222 * Function : cuEgtpTnlMgmtReq
225 * This function handles EGTP tunnel managament request
227 * @param[in] Pst *pst, post structure
228 * Tunnel Eveny structure
229 * @return ROK - success
233 * ***************************************************************************/
234 S16 cuEgtpTnlMgmtReq(uint32_t duId, EgtpTnlEvt tnlEvt)
238 DU_LOG("\nINFO --> EGTP : Received tunnel management request");
239 switch(tnlEvt.action)
241 case EGTP_TNL_MGMT_ADD:
243 ret = cuEgtpTnlAdd(duId, tnlEvt);
246 case EGTP_TNL_MGMT_MOD:
248 ret = cuEgtpTnlMod(duId, tnlEvt);
251 case EGTP_TNL_MGMT_DEL:
253 ret = cuEgtpTnlDel(duId, tnlEvt);
258 DU_LOG("\nERROR --> EGTP : Invalid tunnel management action[%d]", tnlEvt.action);
266 /**************************************************************************
267 * @brief EGTP tunnel addition
271 * Function : cuEgtpTnlAdd
274 * This function handles EGTP tunnel addition
276 * @param[in] Tunnel Event structure
277 * @return ROK - success
280 * ***************************************************************************/
281 S16 cuEgtpTnlAdd(uint32_t duId, EgtpTnlEvt tnlEvt)
285 EgtpMsgHdr preDefHdr; /* pre-define header for this tunnel */
288 DU_LOG("\nINFO --> EGTP : Tunnel addition : LocalTeid[%d] Remote Teid[%d]", tnlEvt.lclTeid, tnlEvt.remTeid);
290 CU_ALLOC(teidCb, (Size)sizeof(EgtpTeIdCb));
294 DU_LOG("\nERROR --> EGTP : Memory allocation failed");
298 memset(teidCb, 0, sizeof(EgtpTeIdCb));
299 teidCb->teId = tnlEvt.lclTeid;
300 teidCb->remTeId = tnlEvt.remTeid;
302 ret = cmHashListInsert(&(egtpCb.dstCb[duId-1].teIdLst), (PTR)teidCb, (uint8_t *)&(teidCb->teId), sizeof(uint32_t));
305 DU_LOG("\nERROR --> EGTP : Failed to insert in hash list");
306 CU_FREE(teidCb, (Size)sizeof(EgtpTeIdCb));
309 egtpCb.dstCb[duId-1].numTunn++;
311 /* Encoding pre-defined header */
312 memset(&preDefHdr, 0, sizeof(EgtpMsgHdr));
313 preDefHdr.msgType = EGTPU_MSG_GPDU;
314 preDefHdr.teId = teidCb->remTeId;
315 preDefHdr.extHdr.pdcpNmb.pres = FALSE;
316 preDefHdr.extHdr.udpPort.pres = FALSE;
317 preDefHdr.nPdu.pres = TRUE; //Including nPdu when sending data
318 preDefHdr.nPdu.val = 0;
320 cuEgtpEncodeHdr((uint8_t *)teidCb->preEncodedHdr.hdr, &preDefHdr, &(teidCb->preEncodedHdr.cnt));
321 egtpCb.gCntPdu[teidCb->remTeId] = 0;//Resetting the Cnt Value for this DRB which indicates its creation
323 /* SPutSBuf(CU_APP_MEM_REG, CU_POOL, (Data *)teidCb, (Size)sizeof(EgtpTeIdCb));*/
328 /**************************************************************************
329 * @brief EGTP tunnel modification
333 * Function : cuEgtpTnlMod
336 * This function handles EGTP tunnel modification
338 * @param[in] Tunnel Event structure
339 * @return ROK - success
342 * ***************************************************************************/
343 S16 cuEgtpTnlMod(uint32_t duId, EgtpTnlEvt tnlEvt)
347 EgtpTeIdCb *teidCb = NULLP;
349 DU_LOG("\nDEBUG --> CU_STUB : Tunnel modification : LocalTeid[%d] Remote Teid[%d]", tnlEvt.lclTeid, tnlEvt.remTeid);
351 cmHashListFind(&(egtpCb.dstCb[duId-1].teIdLst), (uint8_t *)&(tnlEvt.teId), sizeof(uint32_t), 0, (PTR *)&teidCb);
354 DU_LOG("\nDEBUG --> CU_STUBTunnel id not found");
358 teidCb->teId = tnlEvt.lclTeid;
359 teidCb->remTeId = tnlEvt.remTeid;
364 /**************************************************************************
365 * @brief EGTP tunnel deletion
369 * Function : cuEgtpTnlDel
372 * This function handles EGTP tunnel deletion
374 * @param[in] Tunnel Event structure
375 * @return ROK - success
378 * ***************************************************************************/
379 S16 cuEgtpTnlDel(uint32_t duId, EgtpTnlEvt tnlEvt)
381 EgtpTeIdCb *teidCb = NULLP;
383 DU_LOG("\nDEBUG --> EGTP : Tunnel deletion : Local Teid[%d] Remote Teid[%d]", tnlEvt.lclTeid, tnlEvt.remTeid);
385 cmHashListFind(&(egtpCb.dstCb[duId-1].teIdLst), (uint8_t *)&(tnlEvt.lclTeid), sizeof(uint32_t), 0, (PTR *)&teidCb);
388 DU_LOG("\nERROR --> EGTP : Tunnel id[%d] not configured", tnlEvt.lclTeid);
392 cmHashListDelete(&(egtpCb.dstCb[duId-1].teIdLst), (PTR)teidCb);
393 CU_FREE(teidCb, (Size)sizeof(EgtpTeIdCb));
394 egtpCb.dstCb[duId-1].numTunn--;
399 /*******************************************************************
401 * @brief Encodes message header
405 * Function : cuEgtpEncodeHdr
408 * Encodes EGTP message haeder
410 * @params[in] EGTP message
412 * @return ROK - success
415 * ****************************************************************/
416 S16 cuEgtpEncodeHdr(uint8_t *preEncodedHdr, EgtpMsgHdr *preDefHdr, uint8_t *hdrIdx)
418 uint8_t tmpByte = 0; /* Stores one byte of data for enc */
419 uint8_t cnt = EGTP_MAX_HDR_LEN; /* Stores the position */
420 Bool extPres = FALSE; /* Flag for indication of S, E or P presense flag */
423 /* Encoding header */
424 tmpByte |= EGTP_MASK_BIT6; /* Setting 6th LSB of 1st byte as version */
425 tmpByte |= EGTP_MASK_BIT5; /* Setting 5th LSB of 1st byte as protocol type */
427 if(preDefHdr->extHdr.udpPort.pres || preDefHdr->extHdr.pdcpNmb.pres)
429 tmpByte |= EGTP_MASK_BIT3; /* Setting 3rd LSB of 1st byte if Extension heaeder is present */
432 if(preDefHdr->seqNum.pres)
434 tmpByte |= EGTP_MASK_BIT2;
437 if(preDefHdr->nPdu.pres)
439 tmpByte |= EGTP_MASK_BIT1;
442 if((tmpByte & EGTP_MASK_BIT1) || (tmpByte & EGTP_MASK_BIT2)||(tmpByte & EGTP_MASK_BIT3))
446 preEncodedHdr[--cnt] = tmpByte;
447 preEncodedHdr[--cnt] = preDefHdr->msgType;
449 /* Encode Tunnel endpoint */
450 preEncodedHdr[--cnt] = 0;
451 preEncodedHdr[--cnt] = 0;
452 nwWord = (uint16_t)(GetHiWord(preDefHdr->teId));
453 preEncodedHdr[--cnt] = (uint8_t)(GetHiByte(nwWord));
454 preEncodedHdr[--cnt] = (uint8_t)(GetLoByte(nwWord));
455 nwWord = (uint16_t)(GetLoWord(preDefHdr->teId));
456 preEncodedHdr[--cnt] = (uint8_t)(GetHiByte(nwWord));
457 preEncodedHdr[--cnt] = (uint8_t)(GetLoByte(nwWord));
459 /* Encode sequence number */
460 if(preDefHdr->seqNum.pres)
462 preEncodedHdr[--cnt] = GetHiByte(preDefHdr->seqNum.val);
463 preEncodedHdr[--cnt] = GetLoByte(preDefHdr->seqNum.val);
467 preEncodedHdr[--cnt] = 0;
468 preEncodedHdr[--cnt] = 0;
471 if(preDefHdr->nPdu.pres)
473 preEncodedHdr[--cnt] = preDefHdr->nPdu.val;
477 preEncodedHdr[--cnt] = 0;
480 if(preDefHdr->extHdr.udpPort.pres)
482 preEncodedHdr[--cnt] = EGTP_EXT_HDR_UDP_TYPE;
483 preEncodedHdr[--cnt] = 1;
484 preEncodedHdr[--cnt] = GetHiByte(preDefHdr->extHdr.udpPort.val);
485 preEncodedHdr[--cnt] = GetLoByte(preDefHdr->extHdr.udpPort.val);
488 if(preDefHdr->extHdr.pdcpNmb.pres)
490 preEncodedHdr[--cnt] = EGTP_EXT_HDR_PDCP_TYPE;
491 preEncodedHdr[--cnt] = 1;
492 preEncodedHdr[--cnt] = GetHiByte(preDefHdr->extHdr.pdcpNmb.val);
493 preEncodedHdr[--cnt] = GetLoByte(preDefHdr->extHdr.pdcpNmb.val);
496 if(tmpByte & EGTP_MASK_BIT3)
498 preEncodedHdr[--cnt] = 0;
502 preEncodedHdr[--cnt] = 0;
508 } /* egtpEncodeHdr */
510 /*******************************************************************
512 * @brief This handles the any EGTP received message
516 * Function : cuEgtpHdlRecvMsg
519 * This handles the any EGTP received message
521 * @params[in] Message Buffer
522 * @return ROK - success
525 * ****************************************************************/
526 S16 cuEgtpHdlRecvMsg(Buffer *mBuf)
528 /*Decoding of EGTP message header */
530 cuEgtpDecodeHdr(mBuf);
532 /* Start Pumping data from CU to DU */
533 //return (cuEgtpDatReq());
537 /*******************************************************************
539 * @brief Decodes message header
543 * Function : cuEgtpDecodeHdr
546 * Decodes EGTP message haeder
548 * @params[in] Message Buffer
549 * @return ROK - success
552 * ****************************************************************/
553 S16 cuEgtpDecodeHdr(Buffer *mBuf)
556 uint8_t tmpByte[5]; /* Holds one byte of data after Dec */
557 uint8_t version = 0; /* Holds the version type, decoded */
558 MsgLen msgLen = 0; /* Holds the msgLen from the Hdr */
559 MsgLen bufLen = 0; /* Holds the total buffer length */
560 uint8_t extHdrType = 0; /* Holds the Extension hdr type */
561 uint8_t extHdrLen = 0; /* Extension hdr length */
562 Bool extPres = FALSE; /* Flag for indication of S, E or P presense flag */
564 ODU_GET_MSG_LEN(mBuf, &bufLen);
567 ODU_REM_PRE_MSG(&tmpByte[0], mBuf);
568 version = tmpByte[0] >> 5;
570 /* Decode message type */
571 ODU_REM_PRE_MSG((Data*)&(egtpMsg.msgHdr.msgType), mBuf);
573 /* Decode message length */
574 ODU_REM_PRE_MSG(&tmpByte[1], mBuf);
575 ODU_REM_PRE_MSG(&tmpByte[2], mBuf);
576 msgLen = (tmpByte[1] << 8) | tmpByte[2];
578 /* Decode tunnel id */
579 ODU_REM_PRE_MSG(&tmpByte[1], mBuf);
580 ODU_REM_PRE_MSG(&tmpByte[2], mBuf);
581 ODU_REM_PRE_MSG(&tmpByte[3], mBuf);
582 ODU_REM_PRE_MSG(&tmpByte[4], mBuf);
583 egtpMsg.msgHdr.teId = (tmpByte[1] << 24) | (tmpByte[2] << 16) | (tmpByte[3] << 8) | tmpByte[4];
585 if((tmpByte[0] & EGTP_MASK_BIT1) || (tmpByte[0] & EGTP_MASK_BIT2)||(tmpByte[0] & EGTP_MASK_BIT3))
590 /* Decode sequence number */
591 if ( tmpByte[0] & EGTP_MASK_BIT2 )
593 egtpMsg.msgHdr.seqNum.pres = TRUE;
594 ODU_REM_PRE_MSG(&tmpByte[1], mBuf);
595 ODU_REM_PRE_MSG(&tmpByte[2], mBuf);
596 egtpMsg.msgHdr.seqNum.val = (tmpByte[1] << 8) | tmpByte[2];
600 egtpMsg.msgHdr.seqNum.pres = 0;
601 ODU_REM_PRE_MSG(&tmpByte[1], mBuf);
602 ODU_REM_PRE_MSG(&tmpByte[2], mBuf);
603 egtpMsg.msgHdr.seqNum.val = (tmpByte[1] << 8) | tmpByte[2];
606 /* Decode N-PDU number */
607 if ( tmpByte[0] & EGTP_MASK_BIT1 )
609 egtpMsg.msgHdr.nPdu.pres = TRUE;
610 ODU_REM_PRE_MSG(&(egtpMsg.msgHdr.nPdu.val), mBuf);
614 egtpMsg.msgHdr.nPdu.pres = TRUE;
615 ODU_REM_PRE_MSG(&(egtpMsg.msgHdr.nPdu.val), mBuf);
618 if(extPres & EGTP_MASK_BIT1)
620 ODU_REM_PRE_MSG(&extHdrType, mBuf);
621 while( 0 != extHdrType)
625 case EGTP_EXT_HDR_UDP_TYPE:
627 ODU_REM_PRE_MSG(&extHdrLen, mBuf);
628 if(extHdrLen == 0x01)
630 egtpMsg.msgHdr.extHdr.udpPort.pres = TRUE;
631 ODU_REM_PRE_MSG(&tmpByte[1], mBuf);
632 ODU_REM_PRE_MSG(&tmpByte[2], mBuf);
633 egtpMsg.msgHdr.extHdr.udpPort.val = (tmpByte[1] << 8) | tmpByte[2];
638 case EGTP_EXT_HDR_PDCP_TYPE:
640 ODU_REM_PRE_MSG(&extHdrLen, mBuf);
641 if(extHdrLen == 0x01)
643 egtpMsg.msgHdr.extHdr.pdcpNmb.pres = TRUE;
644 ODU_REM_PRE_MSG(&tmpByte[1], mBuf);
645 ODU_REM_PRE_MSG(&tmpByte[2], mBuf);
646 egtpMsg.msgHdr.extHdr.pdcpNmb.val = (tmpByte[1] << 8) | tmpByte[2];
650 } /* End of switch */
652 ODU_REM_PRE_MSG(&extHdrType, mBuf);
655 } /* End of if(extPres & EGTP_MASK_BIT1) */
658 ODU_REM_PRE_MSG(&extHdrType, mBuf);
661 DU_LOG("\nDEBUG --> EGTP : Message Buffer after decoding header [TEID:%d]",egtpMsg.msgHdr.teId);
662 ODU_PRINT_MSG(mBuf, 0, 0);
668 } /* End of cuEgtpDecodeHdr */
670 /*******************************************************************
672 * @brief This function is responsible to build application message, encode EGTP
673 * header to it and send to DU over tunnel (teId)
677 * Function : cuEgtpDatReq
680 * function is responsible to build application message, encode EGTP
681 * header to it and send to DU over tunnel (teId)
683 * @params[in] uint8_t teId
685 * @return ROK - success
688 * ****************************************************************/
689 uint16_t cuEgtpDatReq(uint32_t duId, uint8_t teId)
691 uint8_t ret = ROK, cnt = 0;
694 egtpMsg.msgHdr.teId = teId;
696 if(egtpCb.gCntPdu[teId] == 0xFF) //DRB not created
698 DU_LOG("\nERROR --> EGTP : DRB not created");
701 /* Build Application message that is supposed to come from app to egtp */
702 ret = BuildAppMsg(duId, &egtpMsg);
705 DU_LOG("\nERROR --> EGTP : Failed to build App Msg");
709 /* Encode EGTP header to build final EGTP message */
710 ret = BuildEgtpMsg(duId, &egtpMsg);
713 DU_LOG("\nERROR --> EGTP : Failed to build EGTP Msg");
716 cuEgtpSendMsg(duId, egtpMsg.msg);
717 ODU_PUT_MSG_BUF(egtpMsg.msg);
722 /*******************************************************************
724 * @brief Builds application message to be sent to DU in DL path
728 * Function : BuildAppMsg
731 * Builds application message to be sent to DU in DL path
733 * @params[in] uint32_t duId,EGTP message
735 * @return ROK - success
738 * ****************************************************************/
739 S16 BuildAppMsg(uint32_t duId, EgtpMsg *egtpMsg)
741 char data[1215] = "In telecommunications, 5G is the fifth generation technology standard for broadband cellular"
742 " networks, which cellular phone companies began deploying worldwide in 2019, and is the planned successor to the 4G "
743 " networks which provide connectivity to most current cellphones. 5G networks are predicted to have more than 1.7"
744 " billion subscribers worldwide by 2025, according to the GSM Association.Like its predecessors, 5G networks are"
745 " cellular networks,in which the service area is divided into small geographical areas called cells.All 5G wireless"
746 " devices in a cell are connected to the Internet and telephone network by radio waves through local antenna in the"
747 " cell. The main advantage of the new networks is that they will have greater bandwidth, giving higher download"
748 " speeds, eventually up to 10 gigabits per second(Gbit/s). Due to the increased bandwidth, it is expected the"
749 " networks will not exclusively serve cellphones like existing cellular networks, but also be used as general"
750 " internet service providers for laptops and desktop computers, competing with existing ISPs such as cable"
751 " internet, and also will make possible new applications in internet of things (IoT) and machine to machine areas.";
757 if(ODU_GET_MSG_BUF(CU_APP_MEM_REG, CU_POOL, &mBuf) == ROK)
759 if(ODU_ADD_POST_MSG_MULT((Data *)data, datSize, mBuf) != ROK)
761 DU_LOG("\nERROR --> EGTP : ODU_ADD_POST_MSG_MULT failed");
762 ODU_PUT_MSG_BUF(mBuf);
768 DU_LOG("\nERROR --> EGTP : Failed to allocate memory");
772 /* filling IPv4 header */
777 ODU_GET_MSG_LEN(mBuf, &mLen);
779 memset(&ipv4Hdr, 0, sizeof(CmIpv4Hdr));
780 ipv4Hdr.length = CM_IPV4_HDRLEN + mLen;
781 ipv4Hdr.hdrVer = 0x45;
783 ipv4Hdr.srcAddr = CM_INET_NTOH_UINT32(egtpCb.egtpCfg.egtpAssoc[duId-1].localIp.ipV4Addr);
784 ipv4Hdr.destAddr = CM_INET_NTOH_UINT32(egtpCb.egtpCfg.egtpAssoc[duId-1].destIp.ipV4Addr);
786 /* Packing IPv4 header into buffer */
788 Data revPkArray[CM_IPV4_HDRLEN];
789 Data pkArray[CM_IPV4_HDRLEN];
791 /* initialize locals */
793 memset(revPkArray, 0, CM_IPV4_HDRLEN);
794 memset(pkArray, 0, CM_IPV4_HDRLEN);
796 /* Pack Header Version */
797 pkArray[cnt++] = ipv4Hdr.hdrVer;
800 pkArray[cnt++] = ipv4Hdr.tos;
802 pkArray[cnt++] = (Data)GetHiByte(ipv4Hdr.length);
803 pkArray[cnt++] = (Data)GetLoByte(ipv4Hdr.length);
806 pkArray[cnt++] = (Data) GetHiByte(ipv4Hdr.id);
807 pkArray[cnt++] = (Data) GetLoByte(ipv4Hdr.id);
810 pkArray[cnt++] = (Data)GetHiByte(ipv4Hdr.off);
811 pkArray[cnt++] = (Data)GetLoByte(ipv4Hdr.off);
814 pkArray[cnt++] = ipv4Hdr.ttl;
817 pkArray[cnt++] = ipv4Hdr.proto;
820 pkArray[cnt++] = (Data)GetHiByte(ipv4Hdr.chkSum);
821 pkArray[cnt++] = (Data)GetLoByte(ipv4Hdr.chkSum);
823 /* Pack Source Address */
824 pkArray[cnt++] = (Data)GetHiByte(GetHiWord(ipv4Hdr.srcAddr));
825 pkArray[cnt++] = (Data)GetLoByte(GetHiWord(ipv4Hdr.srcAddr));
826 pkArray[cnt++] = (Data)GetHiByte(GetLoWord(ipv4Hdr.srcAddr));
827 pkArray[cnt++] = (Data)GetLoByte(GetLoWord(ipv4Hdr.srcAddr));
829 /* Pack Destination Address */
830 pkArray[cnt++] = (Data)GetHiByte(GetHiWord(ipv4Hdr.destAddr));
831 pkArray[cnt++] = (Data)GetLoByte(GetHiWord(ipv4Hdr.destAddr));
832 pkArray[cnt++] = (Data)GetHiByte(GetLoWord(ipv4Hdr.destAddr));
833 pkArray[cnt++] = (Data)GetLoByte(GetLoWord(ipv4Hdr.destAddr));
835 for (idx = 0; idx < CM_IPV4_HDRLEN; idx++)
836 revPkArray[idx] = pkArray[CM_IPV4_HDRLEN - idx -1];
838 /* this function automatically reverses revPkArray */
839 ret = ODU_ADD_PRE_MSG_MULT(revPkArray, (MsgLen)cnt, mBuf);
841 egtpMsg->msgHdr.msgType = EGTPU_MSG_GPDU;
842 egtpMsg->msgHdr.nPdu.pres = TRUE;
844 if(egtpCb.gCntPdu[egtpMsg->msgHdr.teId] != NUM_DL_PACKETS)
845 egtpCb.gCntPdu[egtpMsg->msgHdr.teId]++;
847 egtpCb.gCntPdu[egtpMsg->msgHdr.teId] = 1;
849 egtpMsg->msgHdr.nPdu.val = egtpCb.gCntPdu[egtpMsg->msgHdr.teId];
850 egtpMsg->msgHdr.seqNum.pres = FALSE;
851 egtpMsg->msgHdr.extHdr.udpPort.pres = FALSE;
852 egtpMsg->msgHdr.extHdr.pdcpNmb.pres = FALSE;
858 /*******************************************************************
860 * @brief Encodes EGTP header to application message to send to DU
864 * Function : BuildEgtpMsg
867 * Encodes EGTP header to application message to send to DU
869 * @params[in] uint32_t duId,EGTP message
871 * @return ROK - success
874 * ****************************************************************/
875 S16 BuildEgtpMsg(uint32_t duId, EgtpMsg *egtpMsg)
877 EgtpTeIdCb *teidCb = NULLP;
883 cmHashListFind(&(egtpCb.dstCb[duId-1].teIdLst), (uint8_t *)&(egtpMsg->msgHdr.teId), sizeof(uint32_t), 0, (PTR *)&teidCb);
886 DU_LOG("\nERROR --> EGTP : Tunnel id[%d] not configured", egtpMsg->msgHdr.teId);
887 return (LCM_REASON_INVALID_PAR_VAL);
890 msgHdr = &(egtpMsg->msgHdr);
892 hdrLen = teidCb->preEncodedHdr.cnt;
894 if(msgHdr->extHdr.pdcpNmb.pres)
896 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 1] |= EGTP_MASK_BIT3;
897 teidCb->preEncodedHdr.hdr[hdrLen] = EGTP_EXT_HDR_PDCP_TYPE;
898 teidCb->preEncodedHdr.hdr[--hdrLen] = 1;
899 teidCb->preEncodedHdr.hdr[--hdrLen] = GetHiByte(msgHdr->extHdr.pdcpNmb.val);
900 teidCb->preEncodedHdr.hdr[--hdrLen] = GetLoByte(msgHdr->extHdr.pdcpNmb.val);
901 teidCb->preEncodedHdr.hdr[--hdrLen] = 0;
905 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 1] &= ~(EGTP_MASK_BIT3);
908 ODU_GET_MSG_LEN(egtpMsg->msg, &tPduSize);
910 /*Adjust the header to fill the correct length*/
911 msgLen = tPduSize + (EGTP_MAX_HDR_LEN - hdrLen) - 0x08;
913 /***********************************************
914 * Fill the length field of the message header *
915 ***********************************************/
916 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 3] = (uint8_t)GetHiByte(msgLen);
917 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 4] = (uint8_t)GetLoByte(msgLen);
919 /*Update the sequence number*/
920 if(egtpMsg->msgHdr.seqNum.pres)
922 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 1] |= (EGTP_MASK_BIT2);
923 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 9] = (uint8_t)GetHiByte(egtpMsg->msgHdr.seqNum.val);
924 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 10] = (uint8_t)GetLoByte(egtpMsg->msgHdr.seqNum.val);
928 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 1] &= ~(EGTP_MASK_BIT2);
931 /*Update the nPdU number*/
932 if(egtpMsg->msgHdr.nPdu.pres)
934 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 1] |= (EGTP_MASK_BIT1);
935 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 11] = egtpMsg->msgHdr.nPdu.val;
939 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 1] &= ~(EGTP_MASK_BIT1);
942 ODU_ADD_PRE_MSG_MULT(&teidCb->preEncodedHdr.hdr[hdrLen], (EGTP_MAX_HDR_LEN - hdrLen), egtpMsg->msg);
946 /*******************************************************************
948 * @brief Send the egtp message to the destination DU
952 * Function : cuEgtpSendMsg
955 * Send the egtp message to the destination DU
957 * @params[in] uint32_t duId
959 * @return ROK - success
962 * ****************************************************************/
963 S16 cuEgtpSendMsg(uint32_t duId, Buffer *mBuf)
970 info.region = CU_APP_MEM_REG;
973 dstAddr.port = EGTP_RECVR_PORT;
974 dstAddr.address = egtpCb.dstCb[duId-1].dstIp;
976 ret = cmInetSendMsg(&(egtpCb.dstCb[duId-1].sendTptSrvr.sockFd), &dstAddr, &info, mBuf, &txLen, CM_INET_NO_FLAG);
977 if(ret != ROK && ret != RWOULDBLOCK)
979 DU_LOG("\nERROR --> EGTP : Message send failure");
983 DU_LOG("\nDEBUG --> EGTP : Message Sent");