netdev - Re: bridge: Respect call-iptables sysctls everywhere

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Message-ID: <20141005091343.GA11246@breakpoint.cc>
Date:	Sun, 5 Oct 2014 11:13:43 +0200
From:	Florian Westphal <fw@...len.de>
To:	Herbert Xu <herbert@...dor.apana.org.au>
Cc:	Florian Westphal <fw@...len.de>, 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: Respect call-iptables sysctls everywhere

Herbert Xu <herbert@...dor.apana.org.au> wrote:
> On Sat, Oct 04, 2014 at 08:06:47PM +0200, Florian Westphal wrote:
> >
> > Fair enough.  We lose frag_max_size information from ipv4 defrag,
> 
> While reviewing this code it occured to me that we have a serious
> bug in that call-iptables sysctls aren't even respected in FORWARD
> and POST_ROUTING.  Here is a patch that fixes this.

Upcalls to iptables in FORWARD/POSTROUTING depend on skb->nf_bridge
being set up, which only happens when call-iptables=1.
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