UDP packet loss

Int32 VerifyPacket (Cppi_Desc* pCppiDesc)
{
	Cppi_HostDesc               *pHostDesc;
	UInt8                       *pDataBuffer;
	UInt32		      	        infoLen;
	pasahoLongInfo_t 	        *pinfo;
	UInt8                       portNum;
	int							 index1;

	pHostDesc = (Cppi_HostDesc *)pCppiDesc;

	/* Verify the application software info we received is same
	 * as what we had sent earlier.
	 */
	if (pHostDesc->softwareInfo0 != 0xaaaaaaaa)
	{
		System_printf ("VerifyPacket: Found an entry in receive queue with swinfo0 = 0x%08x, expected 0x%08x\n",
				pHostDesc->softwareInfo0, 0xaaaaaaaa);

		pHostDesc->buffLen = pHostDesc->origBufferLen;
		Qmss_queuePush (gRxFreeQHnd, (Ptr)pHostDesc, pHostDesc->buffLen, SIZE_HOST_DESC, Qmss_Location_TAIL);

		return -1;
	}

	/* Get the parse information, make sure there is an L4 offset */
	if (Cppi_getPSData (Cppi_DescType_HOST, Cppi_PSLoc_PS_IN_DESC, (Cppi_Desc *)pHostDesc, (UInt8 **)&pinfo, &infoLen) != CPPI_SOK)  {
		System_printf ("VerifyPacket: Error getting control info from received data packet\n");
		return (-1);
	}
	else if(!cpswSimTest)
	{
		/* Verify the input port number */
		portNum = PASAHO_LINFO_READ_INPORT(pinfo);

		if (portNum != pa_EMAC_PORT_1)
		{
			System_printf ("VerifyPacket: receive packet from unexpected EMAC PORT %d (expected %d)\n", portNum - 1, pa_EMAC_PORT_1 - 1);
			System_flush();
		}
	}
	/* Verify the packet matches what we had sent */
	pDataBuffer = (UInt8 *) pHostDesc->buffPtr;
	GigeRxDataBufQ[tgigeRxQHeadPtr].ReceivePacketLength=(int) pHostDesc->buffLen;
	for(index1=0 ; index1 < pHostDesc->buffLen ;index1++)
	{
		GigeRxDataBufQ[tgigeRxQHeadPtr].ReceivePacketBuffer[index1] = pDataBuffer[index1];
	}
	tgigeRxQHeadPtr = (Uint32)(tgigeRxQHeadPtr + 1) % GIGE_RX_QUEUE_LIMIT;
	tgigeRcvPktCount++;
	/* Reset the buffer lenght and put the descriptor back on the free queue */
	pHostDesc->buffLen = pHostDesc->origBufferLen;
	Qmss_queuePush (gRxFreeQHnd, (Ptr)pHostDesc, pHostDesc->buffLen, SIZE_HOST_DESC, Qmss_Location_TAIL);
	/* Verify packet done. Return success. */
	return 0;
}