netdev - Re: netlink recvmsg() and MSG

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Message-Id: <E1HOjP1-0003NM-00@gondolin.me.apana.org.au>
Date:	Wed, 07 Mar 2007 10:49:07 +1100
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	davem@...emloft.net (David Miller)
Cc:	netdev@...r.kernel.org
Subject: Re: netlink recvmsg() and MSG_TRUNC

David Miller <davem@...emloft.net> 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?

Which netlink family generates (or needs to generate) unbounded
messages to user-space? Or indeed which ones generate messages
greater than 64K (or 4K for that matter)?

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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