linux-kernel - Re: Honoring SO_RCVLOWAT in proto

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Date:	Mon, 13 Oct 2008 02:58:16 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	swivel@...lls.gnugeneration.com
Cc:	alan@...rguk.ukuu.org.uk, linux-kernel@...r.kernel.org
Subject: Re: Honoring SO_RCVLOWAT in proto_ops.poll methods

From: swivel@...lls.gnugeneration.com
Date: Mon, 13 Oct 2008 03:32:14 -0500

> I'm using the pseudo-blocking recv() behavior achieved with SO_RCVTIMEO.
> Thus my app expects recv() to block until SO_RCVLOWAT is met or SO_RCVTIMEO
> expired.

But if you poll() properly, you'll never call recv() unless the amount
of bytes you want are there.

And since I fixed poll()'s handling of SO_RCVLOWAT it should mostly
work.
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