On Mon, Jul 22, 2013 at 10:07 AM, Eric Dumazet <eric.dumazet@xxxxxxxxx> wrote: ... > I guess that if a driver does not advertise NETIF_F_SG, this > skb_linearize() call is not needed : All frames reaching your xmit > function should already be linear As Ben Hutchings pointed out, hw_features is still setting this...but I'm not sure how that matters. ax88179_set_features() doesn't allow setting SG or TSO features. But I expect it would be "not too difficult" to add such that ethtool could set those features after boot. Or perhaps add a driver module parameter to set these features. I just guessing the skb_linearize() could be removed until set_features support for SG and/or TSO is added. Is that correct? thanks, grant -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html