> >- UINT32 encapMss = OvsGetExternalMtu(switchContext) - sizeof(IPHdr) -
> >sizeof(TCPHdr);
> >+ UINT32 encapMss = OvsGetExternalMtu(switchContext)
> >+ - sizeof(IPHdr)
> >+ - sizeof(TCPHdr);
> > if (ipTotalLen > encapMss) {
> >- lsoInfo.Value = 0;
> >- lsoInfo.LsoV2Transmit.TcpHeaderOffset = tcpHeaderOffset;
> >- lsoInfo.LsoV2Transmit.MSS = encapMss;
> >- lsoInfo.LsoV2Transmit.Type =
> NDIS_TCP_LARGE_SEND_OFFLOAD_V2_TYPE;
> >- lsoInfo.LsoV2Transmit.IPVersion =
> >NDIS_TCP_LARGE_SEND_OFFLOAD_IPv4;
> >+ outerIpHdr->check = IPChecksum((UINT8 *)outerIpHdr,
> >+ sizeof *outerIpHdr, 0);
> >+ outerTcpHdr->check = IPPseudoChecksum(&fwdInfo->srcIpAddr,
> >+ (uint32 *) &tunKey->dst,
> >+ IPPROTO_TCP, (uint16)
> >+ 0);
> >+
>
> Sai: We discussed about this in the Hyper-V IRC meeting. You can get rid of
> the V1 type since we can¹t enforce the type of an inner VM on outer host.
>
[Alin Gabriel Serdean: ] My question would be the following. What happens if
the miniport (the actual host adapter) does not support LSO V2.
Alin.
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