kernel: add linux 4.9 support

[openwrt/openwrt.git] / target / linux / generic / patches-4.9 / 616-net_optimize_xfrm_calls.patch

diff --git a/target/linux/generic/patches-4.9/616-net_optimize_xfrm_calls.patch b/target/linux/generic/patches-4.9/616-net_optimize_xfrm_calls.patch
new file mode 100644 (file)
index 0000000..adef94f
--- /dev/null
+++ b/target/linux/generic/patches-4.9/616-net_optimize_xfrm_calls.patch
@@ -0,0 +1,12 @@
+--- a/net/netfilter/nf_nat_core.c
++++ b/net/netfilter/nf_nat_core.c
+@@ -95,6 +95,9 @@ int nf_xfrm_me_harder(struct net *net, s
+       struct dst_entry *dst;
+       int err;
+ 
++      if (skb->dev && !dev_net(skb->dev)->xfrm.policy_count[XFRM_POLICY_OUT])
++              return 0;
++
+       err = xfrm_decode_session(skb, &fl, family);
+       if (err < 0)
+               return err;