netdev - Re: [BUG?] tcp: potential bug in tcp_is_sackblock

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Message-ID: <1316378349.31335.34.camel@edumazet-laptop>
Date:	Sun, 18 Sep 2011 22:39:09 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Dave Taht <dave.taht@...il.com>
Cc:	Ilpo Järvinen <ilpo.jarvinen@...sinki.fi>,
	"Yan, Zheng" <zheng.z.yan@...el.com>,
	Herbert Xu <herbert@...dor.hengli.com.au>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"sfr@...b.auug.org.au" <sfr@...b.auug.org.au>
Subject: Re: [BUG?] tcp: potential bug in tcp_is_sackblock_valid()

Le samedi 17 septembre 2011 à 11:30 -0700, Dave Taht a écrit :

> 
> As cerowrt is one of the few projects enabling sack/dsack/ecn by
> default, it would be good to know either
> 

dsack is enabled by default on linux, not only cerowt project.

> A) how to test to see if this problem is really a problem
> B) should we apply the obvious fix

Isnt Cerowrt a router, most of frames are forwarded anyway ?

This bug is relevant to linux hosts, receiving Duplicate Sacks (RFC
2883).





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