SNIP_CLASSIC_ETH_SECTION_9_4_Transmission_TCP

9.4 Transmission TCP «module» :SoAd «module» :TcpIp «module» :EthIf
                                                                   loop until all buffer segments filled OR no buffer space left                          
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 &      '   opt PDU header enabled AND begin of I-PDU alt data provision [direct data provision (DataPtr != NULL)] [indirect data provision (DataPtr == NULL)]                                 EthIf_ProvideTxBuffer(BufReq_ReturnType, uint8, Eth_FrameType, uint8, Eth_BufIdxType**, uint8***, uint16**) SoAd_CopyTxData(BufReq_ReturnType, TcpIp_SocketIdType, uint8*, uint16) TcpIp_MainFunction() TcpIp_TcpTransmit(Std_ReturnType, TcpIp_SocketIdType, const uint8*, uint32, boolean) SoAd_TxConfirmation(TcpIp_SocketIdType, uint16) TcpIp_RxIndication(uint8, Eth_FrameType, boolean, const uint8*, const uint8*, uint16) EthIf_Transmit(Std_ReturnType, uint8, Eth_BufIdxType, Eth_FrameType, boolean, uint16, const uint8*) Figure 9.4: TcpIp TCP Tx