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 egtpCb.localAddr.address = CM_INET_NTOH_UINT32(egtpCb.egtpCfg.localIp.ipV4Addr);
127 egtpCb.localAddr.port = egtpCb.egtpCfg.localPort;
129 for(destIdx=0; destIdx < egtpCb.egtpCfg.numDu; destIdx++)
131 egtpCb.dstCb[destIdx].duId = destIdx+1;
132 egtpCb.dstCb[destIdx].dstAddr.address = CM_INET_NTOH_UINT32(egtpCb.egtpCfg.dstCfg[destIdx].dstIp.ipV4Addr);
133 egtpCb.dstCb[destIdx].dstAddr.port = egtpCb.egtpCfg.dstCfg[destIdx].dstPort;
134 egtpCb.dstCb[destIdx].numTunn = 0;
136 ret = cmHashListInit(&(egtpCb.dstCb[destIdx].teIdLst), 1024, sizeof(EgtpTeIdCb), FALSE, CM_HASH_KEYTYPE_UINT32_MOD, CU_APP_MEM_REG, CU_POOL);
140 DU_LOG("\nERROR --> EGTP : TeId hash list initialization failed");
145 DU_LOG("\nINFO --> EGTP : Configuration successful");
148 egtpCb.numDu = egtpCb.egtpCfg.numDu;
153 /**************************************************************************
154 * @brief EGTP server open request
158 * Function : egtpSrvOpenReq
161 * This function handles EGTP open server request.
162 * It opens udp socket to receive/send msgs.
164 * @param[in] Pst *pst, post structure
165 * @return ROK - success
168 ***************************************************************************/
170 S16 cuEgtpSrvOpenReq(Pst *pst)
173 uint8_t ret, destIdx;
175 DU_LOG("\nINFO --> EGTP : Received open server request");
177 sockType = CM_INET_DGRAM;
178 if((ret = (cmInetSocket(sockType, &(egtpCb.sockFd), protType))) != ROK)
180 DU_LOG("\nERROR --> EGTP : Failed to open UDP socket");
184 ret = cmInetBind(&(egtpCb.sockFd), &(egtpCb.localAddr));
187 DU_LOG("\nERROR --> EGTP : Failed to bind socket");
191 DU_LOG("\nINFO --> EGTP : Socket[%d] is open", egtpCb.sockFd.fd);
193 } /* cuEgtpSrvOpenReq */
196 /**************************************************************************
197 * @brief EGTP tunnel management request
201 * Function : cuEgtpTnlMgmtReq
204 * This function handles EGTP tunnel managament request
206 * @param[in] Pst *pst, post structure
207 * Tunnel Eveny structure
208 * @return ROK - success
212 * ***************************************************************************/
213 S16 cuEgtpTnlMgmtReq(uint32_t duId, EgtpTnlEvt tnlEvt)
217 DU_LOG("\nINFO --> EGTP : Received tunnel management request");
218 switch(tnlEvt.action)
220 case EGTP_TNL_MGMT_ADD:
222 ret = cuEgtpTnlAdd(duId, tnlEvt);
225 case EGTP_TNL_MGMT_MOD:
227 ret = cuEgtpTnlMod(duId, tnlEvt);
230 case EGTP_TNL_MGMT_DEL:
232 ret = cuEgtpTnlDel(duId, tnlEvt);
237 DU_LOG("\nERROR --> EGTP : Invalid tunnel management action[%d]", tnlEvt.action);
245 /**************************************************************************
246 * @brief EGTP tunnel addition
250 * Function : cuEgtpTnlAdd
253 * This function handles EGTP tunnel addition
255 * @param[in] Tunnel Event structure
256 * @return ROK - success
259 * ***************************************************************************/
260 S16 cuEgtpTnlAdd(uint32_t duId, EgtpTnlEvt tnlEvt)
264 EgtpMsgHdr preDefHdr; /* pre-define header for this tunnel */
267 DU_LOG("\nINFO --> EGTP : Tunnel addition : LocalTeid[%d] Remote Teid[%d]", tnlEvt.lclTeid, tnlEvt.remTeid);
269 CU_ALLOC(teidCb, (Size)sizeof(EgtpTeIdCb));
273 DU_LOG("\nERROR --> EGTP : Memory allocation failed");
277 memset(teidCb, 0, sizeof(EgtpTeIdCb));
278 teidCb->teId = tnlEvt.lclTeid;
279 teidCb->remTeId = tnlEvt.remTeid;
281 ret = cmHashListInsert(&(egtpCb.dstCb[duId-1].teIdLst), (PTR)teidCb, (uint8_t *)&(teidCb->teId), sizeof(uint32_t));
284 DU_LOG("\nERROR --> EGTP : Failed to insert in hash list");
285 CU_FREE(teidCb, (Size)sizeof(EgtpTeIdCb));
288 egtpCb.dstCb[duId-1].numTunn++;
290 /* Encoding pre-defined header */
291 memset(&preDefHdr, 0, sizeof(EgtpMsgHdr));
292 preDefHdr.msgType = EGTPU_MSG_GPDU;
293 preDefHdr.teId = teidCb->remTeId;
294 preDefHdr.extHdr.pdcpNmb.pres = FALSE;
295 preDefHdr.extHdr.udpPort.pres = FALSE;
296 preDefHdr.nPdu.pres = TRUE; //Including nPdu when sending data
297 preDefHdr.nPdu.val = 0;
299 cuEgtpEncodeHdr((uint8_t *)teidCb->preEncodedHdr.hdr, &preDefHdr, &(teidCb->preEncodedHdr.cnt));
300 egtpCb.gCntPdu[teidCb->remTeId] = 0;//Resetting the Cnt Value for this DRB which indicates its creation
302 /* SPutSBuf(CU_APP_MEM_REG, CU_POOL, (Data *)teidCb, (Size)sizeof(EgtpTeIdCb));*/
307 /**************************************************************************
308 * @brief EGTP tunnel modification
312 * Function : cuEgtpTnlMod
315 * This function handles EGTP tunnel modification
317 * @param[in] Tunnel Event structure
318 * @return ROK - success
321 * ***************************************************************************/
322 S16 cuEgtpTnlMod(uint32_t duId, EgtpTnlEvt tnlEvt)
326 EgtpTeIdCb *teidCb = NULLP;
328 DU_LOG("\nDEBUG --> CU_STUB : Tunnel modification : LocalTeid[%d] Remote Teid[%d]", tnlEvt.lclTeid, tnlEvt.remTeid);
330 cmHashListFind(&(egtpCb.dstCb[duId-1].teIdLst), (uint8_t *)&(tnlEvt.teId), sizeof(uint32_t), 0, (PTR *)&teidCb);
333 DU_LOG("\nDEBUG --> CU_STUBTunnel id not found");
337 teidCb->teId = tnlEvt.lclTeid;
338 teidCb->remTeId = tnlEvt.remTeid;
343 /**************************************************************************
344 * @brief EGTP tunnel deletion
348 * Function : cuEgtpTnlDel
351 * This function handles EGTP tunnel deletion
353 * @param[in] Tunnel Event structure
354 * @return ROK - success
357 * ***************************************************************************/
358 S16 cuEgtpTnlDel(uint32_t duId, EgtpTnlEvt tnlEvt)
360 EgtpTeIdCb *teidCb = NULLP;
362 DU_LOG("\nDEBUG --> EGTP : Tunnel deletion : Local Teid[%d] Remote Teid[%d]", tnlEvt.lclTeid, tnlEvt.remTeid);
364 cmHashListFind(&(egtpCb.dstCb[duId-1].teIdLst), (uint8_t *)&(tnlEvt.lclTeid), sizeof(uint32_t), 0, (PTR *)&teidCb);
367 DU_LOG("\nERROR --> EGTP : Tunnel id[%d] not configured", tnlEvt.lclTeid);
371 cmHashListDelete(&(egtpCb.dstCb[duId-1].teIdLst), (PTR)teidCb);
372 CU_FREE(teidCb, (Size)sizeof(EgtpTeIdCb));
373 egtpCb.dstCb[duId-1].numTunn--;
378 /*******************************************************************
380 * @brief Encodes message header
384 * Function : cuEgtpEncodeHdr
387 * Encodes EGTP message haeder
389 * @params[in] EGTP message
391 * @return ROK - success
394 * ****************************************************************/
395 S16 cuEgtpEncodeHdr(uint8_t *preEncodedHdr, EgtpMsgHdr *preDefHdr, uint8_t *hdrIdx)
397 uint8_t tmpByte = 0; /* Stores one byte of data for enc */
398 uint8_t cnt = EGTP_MAX_HDR_LEN; /* Stores the position */
399 Bool extPres = FALSE; /* Flag for indication of S, E or P presense flag */
402 /* Encoding header */
403 tmpByte |= EGTP_MASK_BIT6; /* Setting 6th LSB of 1st byte as version */
404 tmpByte |= EGTP_MASK_BIT5; /* Setting 5th LSB of 1st byte as protocol type */
406 if(preDefHdr->extHdr.udpPort.pres || preDefHdr->extHdr.pdcpNmb.pres)
408 tmpByte |= EGTP_MASK_BIT3; /* Setting 3rd LSB of 1st byte if Extension heaeder is present */
411 if(preDefHdr->seqNum.pres)
413 tmpByte |= EGTP_MASK_BIT2;
416 if(preDefHdr->nPdu.pres)
418 tmpByte |= EGTP_MASK_BIT1;
421 if((tmpByte & EGTP_MASK_BIT1) || (tmpByte & EGTP_MASK_BIT2)||(tmpByte & EGTP_MASK_BIT3))
425 preEncodedHdr[--cnt] = tmpByte;
426 preEncodedHdr[--cnt] = preDefHdr->msgType;
428 /* Encode Tunnel endpoint */
429 preEncodedHdr[--cnt] = 0;
430 preEncodedHdr[--cnt] = 0;
431 nwWord = (uint16_t)(GetHiWord(preDefHdr->teId));
432 preEncodedHdr[--cnt] = (uint8_t)(GetHiByte(nwWord));
433 preEncodedHdr[--cnt] = (uint8_t)(GetLoByte(nwWord));
434 nwWord = (uint16_t)(GetLoWord(preDefHdr->teId));
435 preEncodedHdr[--cnt] = (uint8_t)(GetHiByte(nwWord));
436 preEncodedHdr[--cnt] = (uint8_t)(GetLoByte(nwWord));
438 /* Encode sequence number */
439 if(preDefHdr->seqNum.pres)
441 preEncodedHdr[--cnt] = GetHiByte(preDefHdr->seqNum.val);
442 preEncodedHdr[--cnt] = GetLoByte(preDefHdr->seqNum.val);
446 preEncodedHdr[--cnt] = 0;
447 preEncodedHdr[--cnt] = 0;
450 if(preDefHdr->nPdu.pres)
452 preEncodedHdr[--cnt] = preDefHdr->nPdu.val;
456 preEncodedHdr[--cnt] = 0;
459 if(preDefHdr->extHdr.udpPort.pres)
461 preEncodedHdr[--cnt] = EGTP_EXT_HDR_UDP_TYPE;
462 preEncodedHdr[--cnt] = 1;
463 preEncodedHdr[--cnt] = GetHiByte(preDefHdr->extHdr.udpPort.val);
464 preEncodedHdr[--cnt] = GetLoByte(preDefHdr->extHdr.udpPort.val);
467 if(preDefHdr->extHdr.pdcpNmb.pres)
469 preEncodedHdr[--cnt] = EGTP_EXT_HDR_PDCP_TYPE;
470 preEncodedHdr[--cnt] = 1;
471 preEncodedHdr[--cnt] = GetHiByte(preDefHdr->extHdr.pdcpNmb.val);
472 preEncodedHdr[--cnt] = GetLoByte(preDefHdr->extHdr.pdcpNmb.val);
475 if(tmpByte & EGTP_MASK_BIT3)
477 preEncodedHdr[--cnt] = 0;
481 preEncodedHdr[--cnt] = 0;
487 } /* egtpEncodeHdr */
489 /*******************************************************************
491 * @brief This handles the any EGTP received message
495 * Function : cuEgtpHdlRecvMsg
498 * This handles the any EGTP received message
500 * @params[in] Message Buffer
501 * @return ROK - success
504 * ****************************************************************/
505 S16 cuEgtpHdlRecvMsg(Buffer *mBuf)
507 /*Decoding of EGTP message header */
509 cuEgtpDecodeHdr(mBuf);
511 /* Start Pumping data from CU to DU */
512 //return (cuEgtpDatReq());
516 /*******************************************************************
518 * @brief Decodes message header
522 * Function : cuEgtpDecodeHdr
525 * Decodes EGTP message haeder
527 * @params[in] Message Buffer
528 * @return ROK - success
531 * ****************************************************************/
532 S16 cuEgtpDecodeHdr(Buffer *mBuf)
535 uint8_t tmpByte[5]; /* Holds one byte of data after Dec */
536 uint8_t version = 0; /* Holds the version type, decoded */
537 MsgLen msgLen = 0; /* Holds the msgLen from the Hdr */
538 MsgLen bufLen = 0; /* Holds the total buffer length */
539 uint8_t extHdrType = 0; /* Holds the Extension hdr type */
540 uint8_t extHdrLen = 0; /* Extension hdr length */
541 Bool extPres = FALSE; /* Flag for indication of S, E or P presense flag */
543 ODU_GET_MSG_LEN(mBuf, &bufLen);
546 ODU_REM_PRE_MSG(&tmpByte[0], mBuf);
547 version = tmpByte[0] >> 5;
549 /* Decode message type */
550 ODU_REM_PRE_MSG((Data*)&(egtpMsg.msgHdr.msgType), mBuf);
552 /* Decode message length */
553 ODU_REM_PRE_MSG(&tmpByte[1], mBuf);
554 ODU_REM_PRE_MSG(&tmpByte[2], mBuf);
555 msgLen = (tmpByte[1] << 8) | tmpByte[2];
557 /* Decode tunnel id */
558 ODU_REM_PRE_MSG(&tmpByte[1], mBuf);
559 ODU_REM_PRE_MSG(&tmpByte[2], mBuf);
560 ODU_REM_PRE_MSG(&tmpByte[3], mBuf);
561 ODU_REM_PRE_MSG(&tmpByte[4], mBuf);
562 egtpMsg.msgHdr.teId = (tmpByte[1] << 24) | (tmpByte[2] << 16) | (tmpByte[3] << 8) | tmpByte[4];
564 if((tmpByte[0] & EGTP_MASK_BIT1) || (tmpByte[0] & EGTP_MASK_BIT2)||(tmpByte[0] & EGTP_MASK_BIT3))
569 /* Decode sequence number */
570 if ( tmpByte[0] & EGTP_MASK_BIT2 )
572 egtpMsg.msgHdr.seqNum.pres = TRUE;
573 ODU_REM_PRE_MSG(&tmpByte[1], mBuf);
574 ODU_REM_PRE_MSG(&tmpByte[2], mBuf);
575 egtpMsg.msgHdr.seqNum.val = (tmpByte[1] << 8) | tmpByte[2];
579 egtpMsg.msgHdr.seqNum.pres = 0;
580 ODU_REM_PRE_MSG(&tmpByte[1], mBuf);
581 ODU_REM_PRE_MSG(&tmpByte[2], mBuf);
582 egtpMsg.msgHdr.seqNum.val = (tmpByte[1] << 8) | tmpByte[2];
585 /* Decode N-PDU number */
586 if ( tmpByte[0] & EGTP_MASK_BIT1 )
588 egtpMsg.msgHdr.nPdu.pres = TRUE;
589 ODU_REM_PRE_MSG(&(egtpMsg.msgHdr.nPdu.val), mBuf);
593 egtpMsg.msgHdr.nPdu.pres = TRUE;
594 ODU_REM_PRE_MSG(&(egtpMsg.msgHdr.nPdu.val), mBuf);
597 if(extPres & EGTP_MASK_BIT1)
599 ODU_REM_PRE_MSG(&extHdrType, mBuf);
600 while( 0 != extHdrType)
604 case EGTP_EXT_HDR_UDP_TYPE:
606 ODU_REM_PRE_MSG(&extHdrLen, mBuf);
607 if(extHdrLen == 0x01)
609 egtpMsg.msgHdr.extHdr.udpPort.pres = TRUE;
610 ODU_REM_PRE_MSG(&tmpByte[1], mBuf);
611 ODU_REM_PRE_MSG(&tmpByte[2], mBuf);
612 egtpMsg.msgHdr.extHdr.udpPort.val = (tmpByte[1] << 8) | tmpByte[2];
617 case EGTP_EXT_HDR_PDCP_TYPE:
619 ODU_REM_PRE_MSG(&extHdrLen, mBuf);
620 if(extHdrLen == 0x01)
622 egtpMsg.msgHdr.extHdr.pdcpNmb.pres = TRUE;
623 ODU_REM_PRE_MSG(&tmpByte[1], mBuf);
624 ODU_REM_PRE_MSG(&tmpByte[2], mBuf);
625 egtpMsg.msgHdr.extHdr.pdcpNmb.val = (tmpByte[1] << 8) | tmpByte[2];
629 } /* End of switch */
631 ODU_REM_PRE_MSG(&extHdrType, mBuf);
634 } /* End of if(extPres & EGTP_MASK_BIT1) */
637 ODU_REM_PRE_MSG(&extHdrType, mBuf);
640 DU_LOG("\nDEBUG --> EGTP : Message Buffer after decoding header [TEID:%d]",egtpMsg.msgHdr.teId);
641 ODU_PRINT_MSG(mBuf, 0, 0);
647 } /* End of cuEgtpDecodeHdr */
649 /*******************************************************************
651 * @brief This function is responsible to build application message, encode EGTP
652 * header to it and send to DU over tunnel (teId)
656 * Function : cuEgtpDatReq
659 * function is responsible to build application message, encode EGTP
660 * header to it and send to DU over tunnel (teId)
662 * @params[in] uint8_t teId
664 * @return ROK - success
667 * ****************************************************************/
668 uint16_t cuEgtpDatReq(uint32_t duId, uint8_t teId)
670 uint8_t ret = ROK, cnt = 0;
673 egtpMsg.msgHdr.teId = teId;
675 if(egtpCb.gCntPdu[teId] == 0xFF) //DRB not created
677 DU_LOG("\nERROR --> EGTP : DRB not created");
680 /* Build Application message that is supposed to come from app to egtp */
681 ret = BuildAppMsg(duId, &egtpMsg);
684 DU_LOG("\nERROR --> EGTP : Failed to build App Msg");
688 /* Encode EGTP header to build final EGTP message */
689 ret = BuildEgtpMsg(duId, &egtpMsg);
692 DU_LOG("\nERROR --> EGTP : Failed to build EGTP Msg");
695 cuEgtpSendMsg(duId, egtpMsg.msg);
696 ODU_PUT_MSG_BUF(egtpMsg.msg);
701 /*******************************************************************
703 * @brief Builds application message to be sent to DU in DL path
707 * Function : BuildAppMsg
710 * Builds application message to be sent to DU in DL path
712 * @params[in] uint32_t duId,EGTP message
714 * @return ROK - success
717 * ****************************************************************/
718 S16 BuildAppMsg(uint32_t duId, EgtpMsg *egtpMsg)
720 char data[1215] = "In telecommunications, 5G is the fifth generation technology standard for broadband cellular"
721 " networks, which cellular phone companies began deploying worldwide in 2019, and is the planned successor to the 4G "
722 " networks which provide connectivity to most current cellphones. 5G networks are predicted to have more than 1.7"
723 " billion subscribers worldwide by 2025, according to the GSM Association.Like its predecessors, 5G networks are"
724 " cellular networks,in which the service area is divided into small geographical areas called cells.All 5G wireless"
725 " devices in a cell are connected to the Internet and telephone network by radio waves through local antenna in the"
726 " cell. The main advantage of the new networks is that they will have greater bandwidth, giving higher download"
727 " speeds, eventually up to 10 gigabits per second(Gbit/s). Due to the increased bandwidth, it is expected the"
728 " networks will not exclusively serve cellphones like existing cellular networks, but also be used as general"
729 " internet service providers for laptops and desktop computers, competing with existing ISPs such as cable"
730 " internet, and also will make possible new applications in internet of things (IoT) and machine to machine areas.";
736 if(ODU_GET_MSG_BUF(CU_APP_MEM_REG, CU_POOL, &mBuf) == ROK)
738 if(ODU_ADD_POST_MSG_MULT((Data *)data, datSize, mBuf) != ROK)
740 DU_LOG("\nERROR --> EGTP : ODU_ADD_POST_MSG_MULT failed");
741 ODU_PUT_MSG_BUF(mBuf);
747 DU_LOG("\nERROR --> EGTP : Failed to allocate memory");
751 /* filling IPv4 header */
756 ODU_GET_MSG_LEN(mBuf, &mLen);
758 memset(&ipv4Hdr, 0, sizeof(CmIpv4Hdr));
759 ipv4Hdr.length = CM_IPV4_HDRLEN + mLen;
760 ipv4Hdr.hdrVer = 0x45;
762 ipv4Hdr.srcAddr = CM_INET_NTOH_UINT32(egtpCb.egtpCfg.localIp.ipV4Addr);
763 ipv4Hdr.destAddr = CM_INET_NTOH_UINT32(egtpCb.egtpCfg.dstCfg[duId-1].dstIp.ipV4Addr);
765 /* Packing IPv4 header into buffer */
767 Data revPkArray[CM_IPV4_HDRLEN];
768 Data pkArray[CM_IPV4_HDRLEN];
770 /* initialize locals */
772 memset(revPkArray, 0, CM_IPV4_HDRLEN);
773 memset(pkArray, 0, CM_IPV4_HDRLEN);
775 /* Pack Header Version */
776 pkArray[cnt++] = ipv4Hdr.hdrVer;
779 pkArray[cnt++] = ipv4Hdr.tos;
781 pkArray[cnt++] = (Data)GetHiByte(ipv4Hdr.length);
782 pkArray[cnt++] = (Data)GetLoByte(ipv4Hdr.length);
785 pkArray[cnt++] = (Data) GetHiByte(ipv4Hdr.id);
786 pkArray[cnt++] = (Data) GetLoByte(ipv4Hdr.id);
789 pkArray[cnt++] = (Data)GetHiByte(ipv4Hdr.off);
790 pkArray[cnt++] = (Data)GetLoByte(ipv4Hdr.off);
793 pkArray[cnt++] = ipv4Hdr.ttl;
796 pkArray[cnt++] = ipv4Hdr.proto;
799 pkArray[cnt++] = (Data)GetHiByte(ipv4Hdr.chkSum);
800 pkArray[cnt++] = (Data)GetLoByte(ipv4Hdr.chkSum);
802 /* Pack Source Address */
803 pkArray[cnt++] = (Data)GetHiByte(GetHiWord(ipv4Hdr.srcAddr));
804 pkArray[cnt++] = (Data)GetLoByte(GetHiWord(ipv4Hdr.srcAddr));
805 pkArray[cnt++] = (Data)GetHiByte(GetLoWord(ipv4Hdr.srcAddr));
806 pkArray[cnt++] = (Data)GetLoByte(GetLoWord(ipv4Hdr.srcAddr));
808 /* Pack Destination Address */
809 pkArray[cnt++] = (Data)GetHiByte(GetHiWord(ipv4Hdr.destAddr));
810 pkArray[cnt++] = (Data)GetLoByte(GetHiWord(ipv4Hdr.destAddr));
811 pkArray[cnt++] = (Data)GetHiByte(GetLoWord(ipv4Hdr.destAddr));
812 pkArray[cnt++] = (Data)GetLoByte(GetLoWord(ipv4Hdr.destAddr));
814 for (idx = 0; idx < CM_IPV4_HDRLEN; idx++)
815 revPkArray[idx] = pkArray[CM_IPV4_HDRLEN - idx -1];
817 /* this function automatically reverses revPkArray */
818 ret = ODU_ADD_PRE_MSG_MULT(revPkArray, (MsgLen)cnt, mBuf);
820 egtpMsg->msgHdr.msgType = EGTPU_MSG_GPDU;
821 egtpMsg->msgHdr.nPdu.pres = TRUE;
823 if(egtpCb.gCntPdu[egtpMsg->msgHdr.teId] != NUM_DL_PACKETS)
824 egtpCb.gCntPdu[egtpMsg->msgHdr.teId]++;
826 egtpCb.gCntPdu[egtpMsg->msgHdr.teId] = 1;
828 egtpMsg->msgHdr.nPdu.val = egtpCb.gCntPdu[egtpMsg->msgHdr.teId];
829 egtpMsg->msgHdr.seqNum.pres = FALSE;
830 egtpMsg->msgHdr.extHdr.udpPort.pres = FALSE;
831 egtpMsg->msgHdr.extHdr.pdcpNmb.pres = FALSE;
837 /*******************************************************************
839 * @brief Encodes EGTP header to application message to send to DU
843 * Function : BuildEgtpMsg
846 * Encodes EGTP header to application message to send to DU
848 * @params[in] uint32_t duId,EGTP message
850 * @return ROK - success
853 * ****************************************************************/
854 S16 BuildEgtpMsg(uint32_t duId, EgtpMsg *egtpMsg)
856 EgtpTeIdCb *teidCb = NULLP;
862 cmHashListFind(&(egtpCb.dstCb[duId-1].teIdLst), (uint8_t *)&(egtpMsg->msgHdr.teId), sizeof(uint32_t), 0, (PTR *)&teidCb);
865 DU_LOG("\nERROR --> EGTP : Tunnel id[%d] not configured", egtpMsg->msgHdr.teId);
866 return (LCM_REASON_INVALID_PAR_VAL);
869 msgHdr = &(egtpMsg->msgHdr);
871 hdrLen = teidCb->preEncodedHdr.cnt;
873 if(msgHdr->extHdr.pdcpNmb.pres)
875 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 1] |= EGTP_MASK_BIT3;
876 teidCb->preEncodedHdr.hdr[hdrLen] = EGTP_EXT_HDR_PDCP_TYPE;
877 teidCb->preEncodedHdr.hdr[--hdrLen] = 1;
878 teidCb->preEncodedHdr.hdr[--hdrLen] = GetHiByte(msgHdr->extHdr.pdcpNmb.val);
879 teidCb->preEncodedHdr.hdr[--hdrLen] = GetLoByte(msgHdr->extHdr.pdcpNmb.val);
880 teidCb->preEncodedHdr.hdr[--hdrLen] = 0;
884 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 1] &= ~(EGTP_MASK_BIT3);
887 ODU_GET_MSG_LEN(egtpMsg->msg, &tPduSize);
889 /*Adjust the header to fill the correct length*/
890 msgLen = tPduSize + (EGTP_MAX_HDR_LEN - hdrLen) - 0x08;
892 /***********************************************
893 * Fill the length field of the message header *
894 ***********************************************/
895 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 3] = (uint8_t)GetHiByte(msgLen);
896 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 4] = (uint8_t)GetLoByte(msgLen);
898 /*Update the sequence number*/
899 if(egtpMsg->msgHdr.seqNum.pres)
901 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 1] |= (EGTP_MASK_BIT2);
902 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 9] = (uint8_t)GetHiByte(egtpMsg->msgHdr.seqNum.val);
903 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 10] = (uint8_t)GetLoByte(egtpMsg->msgHdr.seqNum.val);
907 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 1] &= ~(EGTP_MASK_BIT2);
910 /*Update the nPdU number*/
911 if(egtpMsg->msgHdr.nPdu.pres)
913 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 1] |= (EGTP_MASK_BIT1);
914 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 11] = egtpMsg->msgHdr.nPdu.val;
918 teidCb->preEncodedHdr.hdr[EGTP_MAX_HDR_LEN - 1] &= ~(EGTP_MASK_BIT1);
921 ODU_ADD_PRE_MSG_MULT(&teidCb->preEncodedHdr.hdr[hdrLen], (EGTP_MAX_HDR_LEN - hdrLen), egtpMsg->msg);
925 /*******************************************************************
927 * @brief Send the egtp message to the destination DU
931 * Function : cuEgtpSendMsg
934 * Send the egtp message to the destination DU
936 * @params[in] uint32_t duId
938 * @return ROK - success
941 * ****************************************************************/
942 S16 cuEgtpSendMsg(uint32_t duId, Buffer *mBuf)
948 info.region = CU_APP_MEM_REG;
951 ret = cmInetSendMsg(&(egtpCb.sockFd), &egtpCb.dstCb[duId-1].dstAddr, &info, mBuf, &txLen, CM_INET_NO_FLAG);
952 if(ret != ROK && ret != RWOULDBLOCK)
954 DU_LOG("\nERROR --> EGTP : Message send failure");
958 DU_LOG("\nDEBUG --> EGTP : Message Sent");