Fix definitions of SOCKET_MAX, TCP_MAX_CONNS

...and, given that I keep getting this wrong, add a convenience
macro, MAX_FROM_BITS().

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>

1 files changed, 2 insertions, 2 deletions

diff --git a/tcp.h b/tcp.h
index 5527c5b..36e5391 100644
--- a/tcp.h
+++ b/tcp.h
@@ -8,8 +8,8 @@
 
 #define TCP_TIMER_INTERVAL		1000	/* ms */
 
-#define TCP_CONN_INDEX_BITS		17	/* 128k */
-#define TCP_MAX_CONNS			(1 << TCP_CONN_INDEX_BITS)
+#define TCP_CONN_INDEX_BITS		17	/* 128k - 1 */
+#define TCP_MAX_CONNS			MAX_FROM_BITS(TCP_CONN_INDEX_BITS)
 
 struct ctx;