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From: "Jason A. Donenfeld" <Jason@zx2c4.com>
To: jbenc@redhat.com, therbert@google.com
Cc: Netdev <netdev@vger.kernel.org>, linux-kernel@vger.kernel.org
Subject: GSO with udp_tunnel_xmit_skb
Date: Thu, 5 Nov 2015 11:52:06 +0100	[thread overview]
Message-ID: <CAHmME9pphqXyV_+LFQ6TTi4MjFB2Mopss6QQuT3YJQzvgtib2Q@mail.gmail.com> (raw)

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

             reply	other threads:[~2015-11-05 10:52 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-11-05 10:52 Jason A. Donenfeld [this message]
2015-11-06  7:19 ` GSO with udp_tunnel_xmit_skb Tom Herbert
2015-11-06 11:48   ` Jason A. Donenfeld
2015-11-07 17:19     ` Maciej Żenczykowski
2015-11-07 22:39       ` Jason A. Donenfeld
2015-11-07 23:40         ` Maciej Żenczykowski
2015-11-08 10:36           ` Jason A. Donenfeld
2015-11-08 10:57             ` Herbert Xu
2015-11-08 14:57               ` Jason A. Donenfeld
2015-11-09  1:40                 ` Herbert Xu
2015-11-09  2:23                   ` Jason A. Donenfeld
2015-11-09  3:18                     ` Maciej Żenczykowski

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