netdev - Re: [RFC PATCH net-next] tcp: introduce tcp_tw_interval to specifiy the time of TIME-WAIT

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Message-ID: <1349666257.2707.6.camel@cr0>
Date:	Mon, 08 Oct 2012 11:17:37 +0800
From:	Cong Wang <amwang@...hat.com>
To:	Neil Horman <nhorman@...driver.com>
Cc:	netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	Patrick McHardy <kaber@...sh.net>,
	Eric Dumazet <edumazet@...gle.com>
Subject: Re: [RFC PATCH net-next] tcp: introduce tcp_tw_interval to specifiy
 the time of TIME-WAIT

On Tue, 2012-10-02 at 08:09 -0400, Neil Horman wrote:
> No, its not very friendly, but the people using this are violating the RFC,
> which isn't very friendly. :)

Could you be more specific? In RFC 793, AFAIK, it is allowed to be
changed:

http://tools.ietf.org/html/rfc793

" To be sure that a TCP does not create a segment that carries a
  sequence number which may be duplicated by an old segment remaining in
  the network, the TCP must keep quiet for a maximum segment lifetime
  (MSL) before assigning any sequence numbers upon starting up or
  recovering from a crash in which memory of sequence numbers in use was
  lost.  For this specification the MSL is taken to be 2 minutes.  This
  is an engineering choice, and may be changed if experience indicates
  it is desirable to do so."

or I must still be missing something here... :)

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