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ipv6/ip6_gre: set transport header correctly

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ip6gre_xmit2() incorrectly sets transport header to inner payload
instead of GRE header. It seems copy-and-pasted from ipip.c.
Set transport header to gre header.
(In ipip case the transport header is the inner ip header, so that's
correct.)

Found by inspection. In practice the incorrect transport header
doesn't matter because the skb usually is sent to another net_device
or socket, so the transport header isn't referenced.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Isaku Yamahata 2012-12-24 16:51:04 +00:00 committed by David S. Miller
parent 861aa6d56d
commit ae782bb16c
1 changed files with 1 additions and 2 deletions
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3
net/ipv6/ip6_gre.c
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@ -758,8 +758,6 @@ static netdev_tx_t ip6gre_xmit2(struct sk_buff *skb,
skb_dst_set_noref(skb, dst);
}
skb->transport_header = skb->network_header;
proto = NEXTHDR_GRE;
if (encap_limit >= 0) {
init_tel_txopt(&opt, encap_limit);
@ -768,6 +766,7 @@ static netdev_tx_t ip6gre_xmit2(struct sk_buff *skb,
skb_push(skb, gre_hlen);
skb_reset_network_header(skb);
skb_set_transport_header(skb, sizeof(*ipv6h));
/*
* Push down and install the IP header.