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Commit 0b2531bd authored by Folkert van Heusden's avatar Folkert van Heusden Committed by David S. Miller
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[TCP]: Optimize check in port-allocation code. 



Signed-off-by: default avatarFolkert van Heusden <folkert@vanheusden.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 20cc6bef

net/ipv4/tcp_ipv4.c

+5 −2
Original line number Diff line number Diff line
@@ -222,10 +222,13 @@ static int tcp_v4_get_port(struct sock *sk, unsigned short snum) 
		int rover;



		spin_lock(&tcp_portalloc_lock);

		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);