netdev - Re: handing cloned frames to netif

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Message-Id: <1200092285.3528.5.camel@johannes.berg>
Date:	Fri, 11 Jan 2008 23:58:05 +0100
From:	Johannes Berg <johannes@...solutions.net>
To:	Herbert Xu <herbert@...dor.apana.org.au>
Cc:	netdev@...r.kernel.org, ron.rindjunsky@...el.com,
	linux-wireless@...r.kernel.org
Subject: Re: handing cloned frames to netif_rx()?


On Sat, 2008-01-12 at 09:31 +1100, Herbert Xu wrote:
> Johannes Berg <johannes@...solutions.net> wrote:
> >
> > Is it ok to do this? Will something freak out if we pass a cloned skb to
> > netif_rx()?
> 
> Sounds OK as long as you stick to the rules of cloned skb's, e.g., not
> writing to them unless you've copied it.

Ok. Yes, we will of course adhere to that, but I was wondering whether
maybe the net stack assumes somewhere that a packet it got from the
driver can be written to w/o copying.

johannes

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