netdev - Re: sendfile()? Re: SO_LINGER dead: I get an immediate RST on 2.6.24?

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Message-ID: <20090113063205.GA26047@gondor.apana.org.au>
Date:	Tue, 13 Jan 2009 17:32:05 +1100
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	billfink@...dspring.com
Cc:	ilpo.jarvinen@...sinki.fi, zbr@...emap.net,
	bert.hubert@...herlabs.nl, h.willstrand@...il.com,
	netdev@...r.kernel.org
Subject: Re: sendfile()? Re: SO_LINGER dead: I get an immediate RST on
	2.6.24?

Bill Fink <billfink@...dspring.com> wrote:
>
> If I understand you correctly, to hit this corner case, just after
> the final TCP write, there would have to be no packets in flight
> together with a zero TCP window.  To make it more bullet-proof, I
> guess after seeing a zero tcpi_unacked, an additional small delay
> should be performed, and then rechecking for a zero tcpi_unacked.
> I don't see anything else obvious (to me anyway) in the tcp_info
> that would be particularly helpful in handling this.

What's wrong with idiag_wqueue? Isn't that a much more direct
way to get this?

Cheers,
-- 
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Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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