[TCP]: Optimize check in port-allocation code, v6 version.

Signed-off-by: Folkert van Heusden <folkert@vanheusden.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 4760c85e19db83c0a7278893e07f608064f9f25a..0f69e800a0ad695868f1efc89d645c32a0445e19 100644 (file)
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -139,9 +139,12 @@ static int tcp_v6_get_port(struct sock *sk, unsigned short snum)
                int rover;
 
                spin_lock(&tcp_portalloc_lock);
-               rover = tcp_port_rover;
+               if (tcp_port_rover < low)
+                       rover = low;
+               else
+                       rover = tcp_port_rover;
                do {    rover++;
-                       if ((rover < low) || (rover > high))
+                       if (rover > high)
                                rover = low;
                        head = &tcp_bhash[tcp_bhashfn(rover)];
                        spin_lock(&head->lock);