On 09/22/2013 12:05 AM, Wei Liu wrote:

Anirban was seeing netfront received MTU size packets, which downgraded
throughput. The following patch makes netfront use GRO API which
improves throughput for that case.

Signed-off-by: Wei Liu <redacted>
Signed-off-by: Anirban Chakraborty <redacted>
Cc: Ian Campbell <redacted>

Maybe a dumb question: doesn't Xen depends on the driver of host card to
do GRO and pass it to netfront? What the case that netfront can receive
a MTU size packet, for a card that does not support GRO in host? Doing
GRO twice may introduce extra overheads.

Thanks