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lwtunnel: set skb protocol and dev

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In the locally-generated packet path skb->protocol may not be set and
this is required for the lwtunnel encap in order to get the lwtstate.

This would otherwise have been set by ip_output or ip6_output so set
skb->protocol prior to calling the lwtunnel encap
function. Additionally set skb->dev in case it is needed further down
the transmit path.

Signed-off-by: Robert Shearman <rshearma@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Robert Shearman 2015-08-03 17:39:20 +01:00 committed by David S. Miller
parent 58da018053
commit abf7c1c540
1 changed files with 10 additions and 2 deletions
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12
net/core/lwtunnel.c
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@ -215,8 +215,12 @@ int lwtunnel_output6(struct sock *sk, struct sk_buff *skb)
struct rt6_info *rt = (struct rt6_info *)skb_dst(skb);
struct lwtunnel_state *lwtstate = NULL;
if (rt)
if (rt) {
lwtstate = rt->rt6i_lwtstate;
skb->dev = rt->dst.dev;
}
skb->protocol = htons(ETH_P_IPV6);
return __lwtunnel_output(sk, skb, lwtstate);
}
@ -227,8 +231,12 @@ int lwtunnel_output(struct sock *sk, struct sk_buff *skb)
struct rtable *rt = (struct rtable *)skb_dst(skb);
struct lwtunnel_state *lwtstate = NULL;
if (rt)
if (rt) {
lwtstate = rt->rt_lwtstate;
skb->dev = rt->dst.dev;
}
skb->protocol = htons(ETH_P_IP);
return __lwtunnel_output(sk, skb, lwtstate);
}