From: Felix Fietkau <nbd@nbd.name>
Date: Sun, 8 Apr 2018 17:19:58 +0000 (+0200)
Subject: kernel: avoid flow offload for connections with xfrm on the dst entry (should fix... 
X-Git-Tag: v18.06.2~235
X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fopenwrt.git;a=commitdiff_plain;h=3a507b2f9b6e544fc5768d501332919d579f2f9e

kernel: avoid flow offload for connections with xfrm on the dst entry (should fix IPSec)

Signed-off-by: Felix Fietkau <nbd@nbd.name>
(backported from b560c1748a4edf0d02046e5a988cc0caf1f4f987)
(rebased patches)
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
---

diff --git a/target/linux/generic/hack-4.14/650-netfilter-add-xt_OFFLOAD-target.patch b/target/linux/generic/hack-4.14/650-netfilter-add-xt_OFFLOAD-target.patch
index 84ae4affe3..308fe0974d 100644
--- a/target/linux/generic/hack-4.14/650-netfilter-add-xt_OFFLOAD-target.patch
+++ b/target/linux/generic/hack-4.14/650-netfilter-add-xt_OFFLOAD-target.patch
@@ -98,7 +98,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
  obj-$(CONFIG_NETFILTER_XT_TARGET_LED) += xt_LED.o
 --- /dev/null
 +++ b/net/netfilter/xt_FLOWOFFLOAD.c
-@@ -0,0 +1,365 @@
+@@ -0,0 +1,368 @@
 +/*
 + * Copyright (C) 2018 Felix Fietkau <nbd@nbd.name>
 + *
@@ -326,6 +326,9 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
 +	if (!this_dst || !other_dst)
 +		return -ENOENT;
 +
++	if (dst_xfrm(this_dst) || dst_xfrm(other_dst))
++		return -EINVAL;
++
 +	route->tuple[dir].dst		= this_dst;
 +	route->tuple[dir].ifindex	= xt_in(par)->ifindex;
 +	route->tuple[!dir].dst		= other_dst;
diff --git a/target/linux/generic/hack-4.14/940-cleanup-offload-hooks-on-netdev-unregister.patch b/target/linux/generic/hack-4.14/940-cleanup-offload-hooks-on-netdev-unregister.patch
index 833d9f9916..6638a5e949 100644
--- a/target/linux/generic/hack-4.14/940-cleanup-offload-hooks-on-netdev-unregister.patch
+++ b/target/linux/generic/hack-4.14/940-cleanup-offload-hooks-on-netdev-unregister.patch
@@ -39,7 +39,7 @@ Signed-off-by: Chen Minqiang <ptpt52@gmail.com>
 
 --- a/net/netfilter/xt_FLOWOFFLOAD.c
 +++ b/net/netfilter/xt_FLOWOFFLOAD.c
-@@ -337,10 +337,41 @@ static void xt_flowoffload_table_cleanup
+@@ -340,10 +340,41 @@ static void xt_flowoffload_table_cleanup
  	nf_flow_table_free(table);
  }
  
@@ -81,7 +81,7 @@ Signed-off-by: Chen Minqiang <ptpt52@gmail.com>
  	INIT_DELAYED_WORK(&hook_work, xt_flowoffload_hook_work);
  
  	ret = xt_flowoffload_table_init(&nf_flowtable);
-@@ -358,6 +389,7 @@ static void __exit xt_flowoffload_tg_exi
+@@ -361,6 +392,7 @@ static void __exit xt_flowoffload_tg_exi
  {
  	xt_unregister_target(&offload_tg_reg);
  	xt_flowoffload_table_cleanup(&nf_flowtable);