LWIP之SOCKET的实现(8)

static int iNextRx = 0;

if( dmaRxDscrBase[ iNextRx ].dmaPackStatus &

DMA_DSCR_RX_STATUS_VALID_MSK )

{

return 0; }

pDescr = &dmaRxDscrBase[ iNextRx ];

/*Get the size of the packet*/

size = ((pDescr->dmaPackStatus & 0x7ff) - 4);

//MEMCOPY_L2S_BY4((u8*)ppkt, RxBuff, size); /*optimized memcopy function*/

memcpy(ppkt, RxBuff[iNextRx], size); //string.h library*/

/* Give the buffer back to ENET */

pDescr->dmaPackStatus = DMA_DSCR_RX_STATUS_VALID_MSK;