linux-kernel - [048/146] bridge: fix forwarding of IPv6

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Message-Id: <20110601080309.221593021@blue.kroah.org>
Date:	Wed, 01 Jun 2011 16:59:44 +0900
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Stephen Hemminger <shemminger@...tta.com>,
	"David S. Miller" <davem@...emloft.net>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [048/146] bridge: fix forwarding of IPv6

2.6.38-stable review patch.  If anyone has any objections, please let us know.

------------------


From: Stephen Hemminger <shemminger@...tta.com>

[ Upstream commit cb68552858c64db302771469b1202ea09e696329 ]

The commit 6b1e960fdbd75dcd9bcc3ba5ff8898ff1ad30b6e
    bridge: Reset IPCB when entering IP stack on NF_FORWARD
broke forwarding of IPV6 packets in bridge because it would
call bp_parse_ip_options with an IPV6 packet.

Reported-by: Noah Meyerhans <noahm@...ian.org>
Signed-off-by: Stephen Hemminger <shemminger@...tta.com>
Reviewed-by: Eric Dumazet <eric.dumazet@...il.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 net/bridge/br_netfilter.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/bridge/br_netfilter.c
+++ b/net/bridge/br_netfilter.c
@@ -739,7 +739,7 @@ static unsigned int br_nf_forward_ip(uns
 		nf_bridge->mask |= BRNF_PKT_TYPE;
 	}
 
-	if (br_parse_ip_options(skb))
+	if (pf == PF_INET && br_parse_ip_options(skb))
 		return NF_DROP;
 
 	/* The physdev module checks on this */


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