IPv6: reassembly: replace magic number with macro definitions

Use macro to define high/low thresh value, refer to IPV6_FRAG_TIMEOUT.

Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Patrick McHardy <kaber@trash.net>
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index ccab594..299bbf5 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -246,6 +246,8 @@
 int ip6_frag_nqueues(struct net *net);
 int ip6_frag_mem(struct net *net);
 
+#define IPV6_FRAG_HIGH_THRESH	262144		/* == 256*1024 */
+#define IPV6_FRAG_LOW_THRESH	196608		/* == 192*1024 */
 #define IPV6_FRAG_TIMEOUT	(60*HZ)		/* 60 seconds */
 
 extern int __ipv6_addr_type(const struct in6_addr *addr);