From: Dave Taht <dave.taht@gmail.com>
To: Jonathan Morton <chromatix99@gmail.com>
Cc: Bufferbloat Mainlinglist <bloat@lists.bufferbloat.net>
Subject: Re: [Bloat] No ECN marking in IPv6 linux
Date: Sun, 8 May 2011 21:28:09 -0600 [thread overview]
Message-ID: <BANLkTimad0LKTbPUh8o6C8wdHLQn--XCjA@mail.gmail.com> (raw)
In-Reply-To: <BANLkTik=1o9eM1bPrqsRF9W90qwM_PT72w@mail.gmail.com>
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Final patch found, merged into openwrt (tested on 2.6.38, 2.6.37), and
incorporated into the bismark and iscwrt builds. Nice catch.
I hope the next round of sfb testing goes much better.
On Fri, May 6, 2011 at 1:42 PM, Dave Taht <dave.taht@gmail.com> wrote:
>
>
> On Fri, May 6, 2011 at 12:18 PM, Jonathan Morton <chromatix99@gmail.com>wrote:
>
>>
>> On 6 May, 2011, at 9:14 pm, Dave Taht wrote:
>>
>> > I am curious as to what the correct behavior here should be for
>> encapsulated (6in4, 6to4, teredo) packets, and if this functionality was
>> also borked. I was under the impression that for encapsulated packets the
>> tos field was copied from the encapsulated packet to the ipv4 header.
>>
>> Intuitively, these protocols are at the same level as IP in the stack, so
>> they should preserve ECN information as much as possible. Copying the TOS
>> field should be sufficient...
>>
>>
> My concern here is that a AQM-aware (ECN) qdisc such as SFB on the external
> interface will not recognize a flow for what it is, when encapsulated...
>
>
>
--
Dave Täht
SKYPE: davetaht
US Tel: 1-239-829-5608
http://the-edge.blogspot.com
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next prev parent reply other threads:[~2011-05-09 3:22 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-14 4:44 [Bloat] ECN blocking router found Dave Taht
2011-04-14 14:43 ` Brian Clapper
2011-04-15 17:40 ` Rui Paulo
2011-04-23 7:43 ` Richard Scheffenegger
2011-04-18 16:43 ` [Bloat] tcp_ecn=2 (server-mode ECN) Henrique de Moraes Holschuh
2011-05-06 15:27 ` [Bloat] No ECN marking in IPv6 linux Eric Dumazet
2011-05-06 18:14 ` Dave Taht
2011-05-06 18:18 ` Jonathan Morton
2011-05-06 19:42 ` Dave Taht
2011-05-09 3:28 ` Dave Taht [this message]
2011-05-09 12:11 ` Lars Eggert
2011-05-16 15:09 ` Juliusz Chroboczek
2011-05-06 18:40 ` Matthew Ford
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