build: (additional) support for Linux 4.14

Signed-off-by: Seth Forshee <seth.forshee@canonical.com>

diff --git a/extensions/compat_xtables.h b/extensions/compat_xtables.h
index d8882ac7670aa3d7b9a35c9077950e82e3e2937c..354884e15e1a6206767c4ba9a4b8f25db748b614 100644 (file)
--- a/extensions/compat_xtables.h
+++ b/extensions/compat_xtables.h
@@ -93,4 +93,8 @@ static inline struct net *par_net(const struct xt_action_param *par)
 #endif
 }
 
+#ifndef NF_CT_ASSERT
+#      define NF_CT_ASSERT(x)  WARN_ON(!(x))
+#endif
+
 #endif /* _XTABLES_COMPAT_H */