Messages in this thread | | | Date | Thu, 5 Nov 2015 11:52:06 +0100 | Subject | GSO with udp_tunnel_xmit_skb | From | "Jason A. Donenfeld" <> |
| |
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.
Thanks, Jason
[1] http://thread.gmane.org/gmane.linux.network/332194
| |