netfilter: netns nf_conntrack: per-netns net.netfilter.nf_conntrack_checksum sysctl

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
index c9556105..b76a868 100644
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -287,7 +287,6 @@
 
 extern int nf_conntrack_set_hashsize(const char *val, struct kernel_param *kp);
 extern unsigned int nf_conntrack_htable_size;
-extern int nf_conntrack_checksum;
 extern int nf_conntrack_max;
 
 #define NF_CT_STAT_INC(net, count)	\
diff --git a/include/net/netns/conntrack.h b/include/net/netns/conntrack.h
index 2b50758..38b6dae 100644
--- a/include/net/netns/conntrack.h
+++ b/include/net/netns/conntrack.h
@@ -17,6 +17,7 @@
 #ifdef CONFIG_NF_CONNTRACK_EVENTS
 	struct nf_conntrack_ecache *ecache;
 #endif
+	int			sysctl_checksum;
 #ifdef CONFIG_SYSCTL
 	struct ctl_table_header	*sysctl_header;
 #endif