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From: Eric Dumazet <eric.dumazet@gmail.com>
To: Jerry Chu <hkchu@google.com>
Cc: Stephen Hemminger <shemminger@vyatta.com>, netdev@vger.kernel.org
Subject: Re: [PATCH] Add useful per-connection TCP stats for diagnosis purpose.
Date: Sun, 20 Mar 2011 10:18:30 +0100	[thread overview]
Message-ID: <1300612710.2831.106.camel@edumazet-laptop> (raw)
In-Reply-To: <AANLkTikyoS-YDH+N92yCXiFg7MfXhSHeudND9VJgAp15@mail.gmail.com>

Le dimanche 20 mars 2011 à 00:30 -0700, Jerry Chu a écrit :

> I presume the filtering of specific IP addrs/ports are done in the
> kernel to short-circuit the
> O(n) loop. Otherwise it seems moot (i.e., it still costs O(n)).
> 

Filtering is done in kernel, and we can extend filtering capa if
necessary.

/proc/net/tcp is a flat file, you cannot do this


> A quick look at inet_csk_diag_dump() does not reveal anything like
> that. But I haven't
> looked hard enough.

You should ;)



  reply	other threads:[~2011-03-20  9:18 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-03-17  8:06 [PATCH] Add useful per-connection TCP stats for diagnosis purpose H.K. Jerry Chu
2011-03-17  8:42 ` Eric Dumazet
2011-03-17 20:16   ` Jerry Chu
2011-03-17 21:20     ` Stephen Hemminger
2011-03-18  4:33       ` Jerry Chu
2011-03-18  4:51         ` David Miller
2011-03-18  6:05         ` Eric Dumazet
2011-03-19  4:33           ` Jerry Chu
2011-03-19  5:02             ` Eric Dumazet
2011-03-19  5:38               ` Jerry Chu
2011-03-19  6:03                 ` Eric Dumazet
2011-03-20  7:30                   ` Jerry Chu
2011-03-20  9:18                     ` Eric Dumazet [this message]
2011-03-21 21:18             ` Stephen Hemminger
2011-03-21 22:19               ` Ben Greear

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