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From: Eric Dumazet <eric.dumazet@gmail.com>
To: Juliusz Chroboczek <jch@pps.jussieu.fr>
Cc: codel@lists.bufferbloat.net, bloat@lists.bufferbloat.net
Subject: Re: [Codel] [Bloat] better tc support for bittorrent/diffserv
Date: Mon, 14 May 2012 20:03:41 +0200	[thread overview]
Message-ID: <1337018621.8512.592.camel@edumazet-glaptop> (raw)
In-Reply-To: <7imx5a3b4t.fsf@lanthane.pps.jussieu.fr>

On Mon, 2012-05-14 at 19:50 +0200, Juliusz Chroboczek wrote:
> [Pro memoria, I'm the author of a few of the networking bits in
> Transmission, notably the DHT, the µTP support and large parts of the
> IPv6 code.]
> 
> > 0) No ecn on transmission, at least.
> 
> TCP flows will use ECN if your system is configured to use ECN.  µTP
> doesn't do ECN, and there's no easy way to implement it -- there's no
> API to set ECN on UDP packets.

There is an API to set ECN on UDP packets.

setsockopt() IP_TOS, with val = 2





  reply	other threads:[~2012-05-14 18:03 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-05-14 15:51 [Codel] " dave taht
2012-05-14 17:50 ` [Codel] [Bloat] " Juliusz Chroboczek
2012-05-14 18:03   ` Eric Dumazet [this message]
2012-05-14 18:18     ` dave taht
2012-05-14 18:30       ` Juliusz Chroboczek
2012-05-14 18:35         ` dave taht
2012-05-14 18:24     ` Juliusz Chroboczek
2012-05-14 18:31       ` Eric Dumazet
2012-05-14 18:42         ` Eric Dumazet
2012-05-14 18:14   ` Dave Taht
2012-05-14 18:31     ` Juliusz Chroboczek

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