Peter Oh <poh@xxxxxxxxxxxxxxxx> writes: > Initial QCA99X0 support has a known issue with TCP Tx throughput. > All other path such as UDP Tx/Rx and TCP Rx meet their expectation > (> 900Mbps), but TCP Tx marked as low as 5Mbps when single pair is > used on iperf. > > The root cause is turned out because TSO flag is not initialized > properly so that firmware configures TSO in wrong way. > TSO flags in msdu extension descriptor is required to be reset > to indicate firmware there is no TSO is enabled, otherwise it > could act as TSO is enabled which causes huge throughput drop. > > In fact, it's enough by resetting TSO flags only to prevent the > unexpected behavior, but initializing whole msdu ext. descriptor > will help to clear uncertainty of firmware could bring on as it > constantly updated. > > Signed-off-by: Peter Oh <poh@xxxxxxxxxxxxxxxx> Thanks, applied. -- Kalle Valo -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
