netdev - Re: network interface state

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Message-Id: <E1IsUCd-0005f4-00@gondolin.me.apana.org.au>
Date:	Thu, 15 Nov 2007 10:11:35 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	davem@...emloft.net (David Miller)
Cc:	drepper@...hat.com, netdev@...r.kernel.org
Subject: Re: network interface state

David Miller <davem@...emloft.net> wrote:
>
>> BTW, is it possible to send both these requests out before starting to
>> read the results?  This would reduce the amount of code quite a bit.
> 
> Unfortunately, that won't work.  Like datagram protocols,
> netlink assumes one message per sendmsg() call.

Actually netlink packets come with headers so we do allow chaining.
See netlink_rcv_skb for details.

We don't make use of that on recvmsg() though although theoretically
user-space is supposed to be ready to handle that too.

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