kernel: split patches folder up into backport, pending and hack folders

[openwrt/staging/dedeckeh.git] / target / linux / generic / pending-4.9 / 616-net_optimize_xfrm_calls.patch

diff --git a/target/linux/generic/pending-4.9/616-net_optimize_xfrm_calls.patch b/target/linux/generic/pending-4.9/616-net_optimize_xfrm_calls.patch
new file mode 100644 (file)
index 0000000..d39b531
--- /dev/null
+++ b/target/linux/generic/pending-4.9/616-net_optimize_xfrm_calls.patch
@@ -0,0 +1,25 @@
+From: Felix Fietkau <nbd@nbd.name>
+Subject: kernel: add a small xfrm related performance optimization
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+ net/netfilter/nf_nat_core.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/net/netfilter/nf_nat_core.c b/net/netfilter/nf_nat_core.c
+index 5b9c884a452e..4ea363755085 100644
+--- 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, struct sk_buff *skb, unsigned int family)
+       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;
+-- 
+2.11.0
+