openwrt/target/linux/generic/pending-3.18/616-net_optimize_xfrm_calls.patch

--- 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 (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;
kernel: start working on 3.18 support This commit: 1) Copies 3.14 patches 2) Drops mainlined stuff 3) Modifies some patches to apply Signed-off-by: Rafał Miłecki <zajec5@gmail.com> SVN-Revision: 43093 2014-10-27 18:14:39 +00:00			`--- 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;`

kernel: add missing check for skb->dev on netfilter xfrm optimization patch Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 43567 2014-12-08 12:21:17 +00:00			`+ if (skb->dev && !dev_net(skb->dev)->xfrm.policy_count[XFRM_POLICY_OUT])`
kernel: start working on 3.18 support This commit: 1) Copies 3.14 patches 2) Drops mainlined stuff 3) Modifies some patches to apply Signed-off-by: Rafał Miłecki <zajec5@gmail.com> SVN-Revision: 43093 2014-10-27 18:14:39 +00:00			`+ return 0;`
			`+`
			`err = xfrm_decode_session(skb, &fl, family);`
			`if (err < 0)`
			`return err;`