netdev - [PATCH v2] Re: problem with IPoA (CLIP), NAT, and VLANS

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Message-ID: <20090217093908.GB5341@ff.dom.local>
Date:	Tue, 17 Feb 2009 09:39:08 +0000
From:	Jarek Poplawski <jarkao2@...il.com>
To:	Patrick McHardy <kaber@...sh.net>
Cc:	Karl Hiramoto <karl@...amoto.org>, netdev@...r.kernel.org,
	netfilter@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	David Miller <davem@...emloft.net>
Subject: [PATCH v2] Re: problem with IPoA (CLIP),  NAT, and VLANS

Sorry:
-----------------> take 2: changelog fix only

vlan: Update skb->mac_header in __vlan_put_tag().

After moving mac addresses in __vlan_put_tag() skb->mac_header needs
to be updated.

Reported-by: Karl Hiramoto <karl@...amoto.org>
Signed-off-by: Jarek Poplawski <jarkao2@...il.com>
---

 include/linux/if_vlan.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index f8ff918..e1ff5b1 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -210,6 +210,7 @@ static inline struct sk_buff *__vlan_put_tag(struct sk_buff *skb, u16 vlan_tci)
 
 	/* Move the mac addresses to the beginning of the new header. */
 	memmove(skb->data, skb->data + VLAN_HLEN, 2 * VLAN_ETH_ALEN);
+	skb->mac_header -= VLAN_HLEN;
 
 	/* first, the ethernet type */
 	veth->h_vlan_proto = htons(ETH_P_8021Q);

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