From ae782bb16c35ce27512beeda9be6024c88f85b08 Mon Sep 17 00:00:00 2001 From: Isaku Yamahata Date: Mon, 24 Dec 2012 16:51:04 +0000 Subject: [PATCH] ipv6/ip6_gre: set transport header correctly 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 Signed-off-by: David S. Miller --- net/ipv6/ip6_gre.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index 867466c96aac..c727e4712751 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -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. -- 2.30.2