netdev - Re: bridge: Do not compile options in br_parse_ip

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Date:	Fri, 24 Oct 2014 14:28:06 +0200
From:	Pablo Neira Ayuso <pablo@...filter.org>
To:	Florian Westphal <fw@...len.de>
Cc:	Herbert Xu <herbert@...dor.apana.org.au>,
	netfilter-devel@...r.kernel.org, bsd@...hat.com,
	stephen@...workplumber.org, netdev@...r.kernel.org,
	eric.dumazet@...il.com, davidn@...idnewall.com,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: bridge: Do not compile options in br_parse_ip_options

On Fri, Oct 24, 2014 at 12:41:49PM +0200, Florian Westphal wrote:
> Herbert Xu <herbert@...dor.apana.org.au> wrote:
> > bridge: Do not compile options in br_parse_ip_options
> > 
> > Commit 462fb2af9788a82a534f8184abfde31574e1cfa0
> > 
> > 	bridge : Sanitize skb before it enters the IP stack
> > 
> > broke when IP options are actually used because it mangles the
> > skb as if it entered the IP stack which is wrong because the
> > bridge is supposed to operate below the IP stack.
> > 
> > Since nobody has actually requested for parsing of IP options
> > this patch fixes it by simply reverting to the previous approach
> > of ignoring all IP options, i.e., zeroing the IPCB.
> > 
> > If and when somebody who uses IP options and actually needs them
> > to be parsed by the bridge complains then we can revisit this.
> > 
> > Reported-by: David Newall <davidn@...idnewall.com>
> > Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
> 
> Tested-by: Florian Westphal <fw@...len.de>

Applied, thanks a lot for testing Florian.
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