[IPV6]: Don't redo xfrm_lookup for cached dst entries
The xfrm lookup is already done when the dst entry is looked up first and stored in the cache. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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1 changed files with 4 additions and 3 deletions
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@ -673,11 +673,12 @@ ip6ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
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if ((dst = ip6_tnl_dst_check(t)) != NULL)
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dst_hold(dst);
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else
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else {
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dst = ip6_route_output(NULL, &fl);
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if (dst->error || xfrm_lookup(&dst, &fl, NULL, 0) < 0)
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goto tx_err_link_failure;
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if (dst->error || xfrm_lookup(&dst, &fl, NULL, 0) < 0)
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goto tx_err_link_failure;
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}
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tdev = dst->dev;
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