Author: nbd
Date: 2014-08-02 20:50:50 +0200 (Sat, 02 Aug 2014)
New Revision: 41950

Added:
   trunk/target/linux/generic/patches-3.10/616-net_optimize_xfrm_calls.patch
   trunk/target/linux/generic/patches-3.14/616-net_optimize_xfrm_calls.patch
Log:
kernel: add a small xfrm related performance optimization

Signed-off-by: Felix Fietkau <[email protected]>

Added: trunk/target/linux/generic/patches-3.10/616-net_optimize_xfrm_calls.patch
===================================================================
--- trunk/target/linux/generic/patches-3.10/616-net_optimize_xfrm_calls.patch   
                        (rev 0)
+++ trunk/target/linux/generic/patches-3.10/616-net_optimize_xfrm_calls.patch   
2014-08-02 18:50:50 UTC (rev 41950)
@@ -0,0 +1,13 @@
+--- a/net/netfilter/nf_nat_core.c
++++ b/net/netfilter/nf_nat_core.c
+@@ -89,6 +89,9 @@ int nf_xfrm_me_harder(struct sk_buff *sk
+       struct dst_entry *dst;
+       int err;
+ 
++      if (!dev_net(skb->dev)->xfrm.policy_count[XFRM_POLICY_OUT])
++              return 0;
++
+       err = xfrm_decode_session(skb, &fl, family);
+       if (err < 0)
+               return err;
+

Added: trunk/target/linux/generic/patches-3.14/616-net_optimize_xfrm_calls.patch
===================================================================
--- trunk/target/linux/generic/patches-3.14/616-net_optimize_xfrm_calls.patch   
                        (rev 0)
+++ trunk/target/linux/generic/patches-3.14/616-net_optimize_xfrm_calls.patch   
2014-08-02 18:50:50 UTC (rev 41950)
@@ -0,0 +1,13 @@
+--- a/net/netfilter/nf_nat_core.c
++++ b/net/netfilter/nf_nat_core.c
+@@ -90,6 +90,9 @@ int nf_xfrm_me_harder(struct sk_buff *sk
+       struct dst_entry *dst;
+       int err;
+ 
++      if (!dev_net(skb->dev)->xfrm.policy_count[XFRM_POLICY_OUT])
++              return 0;
++
+       err = xfrm_decode_session(skb, &fl, family);
+       if (err < 0)
+               return err;
+
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