I just touch tested ofed-1.3 beta IPoIB. And found there was a kernel parameter hw_csum being added in IPoIB. I have several questions here: 1. Why not using ethtool to set up these HW_CSUM flags? 2. I haven't looked at the detailed code yet, is that possible with this flag, TCP/IP will not do CSUM for HCA which has no TCP/IP offload support? If so, then these packets should be limited to be IB network. Routing to ethernet network, the packets would be dropped. If not, I tested IPoIB-UD, why I saw 30% improvement with hw_csum set in none connectX mthca SDR environment? 3. I saw switching between IPoIB-cm and IPoIB-ud corrupted interface IP address (unicast address, subnet mask, broadcast address. Anybody saw the same problem?
Thanks Shirley _______________________________________________ general mailing list [email protected] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
