[NETNS][FRAGS]: Make thresholds work in namespaces.

This is the same as with the timeout variable.

Currently, after exceeding the high threshold _all_
the fragments are evicted, but it will be fixed in
later patch.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/inet_frag.h

@@ -7,6 +7,8 @@ struct netns_frags {
 
 	/* sysctls */
 	int			timeout;
+	int			high_thresh;
+	int			low_thresh;
 };
 
 struct inet_frag_queue {
@@ -30,8 +32,6 @@ struct inet_frag_queue {
 #define INETFRAGS_HASHSZ		64
 
 struct inet_frags_ctl {
-	int high_thresh;
-	int low_thresh;
 	int secret_interval;
 };