From: Eric Dumazet <eric.dumazet@xxxxxxxxx> Date: Tue, 23 Jul 2013 17:15:54 -0700 > From: Eric Dumazet <edumazet@xxxxxxxxxx> > > usbnet doesn't support yet SG, so drivers should not advertise SG or TSO > capabilities, as they allow TCP stack to build large TSO packets that > need to be linearized and might use order-5 pages. > > This adds an extra copy overhead and possible allocation failures. > > Current code ignore skb_linearize() return code so crashes are even > possible. > > Best is to not pretend SG/TSO is supported, and add this again when/if > usbnet really supports SG for devices who could get a performance gain. > > Based on a prior patch from Freddy Xin <freddy@xxxxxxxxxxx> > > Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx> Applied, thanks Eric. -- 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
