Re: GSO with udp_tunnel_xmit_skb

[Tom Herbert]

On Thu, Nov 5, 2015 at 7:52 PM, Jason A. Donenfeld <Jason@xxxxxxxxx> wrote:
> Hi folks,
>
> When sending arbitrary SKBs with udp_tunnel_xmit_skb, the networking
> stack does not appear to be utilizing UFO on the outgoing UDP packets,
> which significantly caps the transmission speed. I see about 50% CPU
> usage in this send path, triggered for every single outgoing packet.
> Is there a particular skb option I need to set to enable this? I read
> Tom's patch [1] from last year, but this seems to be about setting the
> inner packet type. In my case, the inner type is opaque encrypted
> data, so there's not a relevant setting.
>
Jason,

Is this about UFO or GSO (in email subject)? UFO should operate
independently encapsulation or inner packet setting.

Tom

> Thanks,
> Jason
>
> [1] http://thread.gmane.org/gmane.linux.network/332194
> --
> To unsubscribe from this list: send the line "unsubscribe netdev" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/