netdev - Re: netlink recvmsg() and MSG

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Message-ID: <Line.LNX.4.64.0703061839450.25840@d.namei>
Date:	Tue, 6 Mar 2007 18:40:57 -0500 (EST)
From:	James Morris <jmorris@...ei.org>
To:	David Miller <davem@...emloft.net>
cc:	netdev@...r.kernel.org
Subject: Re: netlink recvmsg() and MSG_TRUNC

On Tue, 6 Mar 2007, David Miller wrote:

> I guess one thing the user could do when it sees MSG_TRUNC
> is keep calling recvmsg() until the receive queue is emptied
> of packets, in order to get that pesky nlk->cb cleared to
> NULL, then resubmit.
> 
> But that's rediculous and complicated.
> 
> Any ideas?

Only slightly less complicated: user calls recvmsg() once with a new flag 
MSG_FLUSH, which causes the queue to be flushed, then resubmits ?


- James
-- 
James Morris
<jmorris@...ei.org>
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