netdev - Re: [PATCH 1/4] inet: Add skb_copy_datagram

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Message-ID: <20141104144258.GA14743@gondor.apana.org.au>
Date:	Tue, 4 Nov 2014 22:42:58 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Benjamin LaHaise <bcrl@...ck.org>
Subject: Re: [PATCH 1/4] inet: Add skb_copy_datagram_iter

On Tue, Nov 04, 2014 at 02:32:00PM +0000, Al Viro wrote:
>
> Too noisy, IMO.  How about skb_copy_datagram_msg() first?  The fewer
> places have to even think of iovec or iov_iter, the better...

We have places like tcp ucopy and tun that do not have msghdr.
So doing skb_copy_datagram_msg means that we'd have to create
a fake msghdr wrapper around them.  The point is not everything
comes in via sendmsg/recvmsg.

What is your motivation for hiding iov/iov_iter? Do you plan to
change their API at some future point?

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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