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ip_gre: Fix bug added to ipgre_tunnel_xmit(). 

We can remove the rt_gateway == 0 check but we shouldn't
remove the 'dst' initialization too.

Noticed by Eric Dumazet.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2012-01-24 18:23:30 -05:00
parent 658c8d964e
commit 61d57f87f3
1 changed files with 3 additions and 1 deletions
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4
net/ipv4/ip_gre.c
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@ -724,8 +724,10 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
goto tx_error;
}
if (skb->protocol == htons(ETH_P_IP))
if (skb->protocol == htons(ETH_P_IP)) {
rt = skb_rtable(skb);
dst = rt->rt_gateway;
}
#if IS_ENABLED(CONFIG_IPV6)
else if (skb->protocol == htons(ETH_P_IPV6)) {
struct neighbour *neigh = dst_get_neighbour_noref(skb_dst(skb));