UDP_TCP_CS_OFFSET_DIFF
ASSERT(ipHdrLen >= UDP_TCP_CS_OFFSET_DIFF);
sum16 = BnxeCalcCksum(&pIpHdr[ipHdrLen - UDP_TCP_CS_OFFSET_DIFF],
UDP_TCP_CS_OFFSET_DIFF, 0);
pTxPkt->tx_info.cs_any_offset = UDP_TCP_CS_OFFSET_DIFF;