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xfrm: Release dst if this dst is improper for vti tunnel 

After searching rt by the vti tunnel dst/src parameter,
if this rt has neither attached to any transformation
nor the transformation is not tunnel oriented, this rt
should be released back to ip layer.

otherwise causing dst memory leakage.

Signed-off-by: Fan Du <fan.du@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
fan.du 2013-11-19 16:53:28 +08:00 committed by David S. Miller
parent 840e93f2ee
commit 236c9f8486
1 changed files with 1 additions and 0 deletions
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net/ipv4/ip_vti.c
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@ -126,6 +126,7 @@ static netdev_tx_t vti_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
if (!rt->dst.xfrm ||
rt->dst.xfrm->props.mode != XFRM_MODE_TUNNEL) {
dev->stats.tx_carrier_errors++;
ip_rt_put(rt);
goto tx_error_icmp;
}
tdev = rt->dst.dev;