[TCP]: Fix a bug in strategy_allowed_congestion_control
authorShan Wei <shanwei@cn.fujitsu.com>
Fri, 1 Feb 2008 00:47:27 +0000 (16:47 -0800)
committerDavid S. Miller <davem@davemloft.net>
Fri, 1 Feb 2008 03:28:23 +0000 (19:28 -0800)
In strategy_allowed_congestion_control of the 2.6.24 kernel, when
sysctl_string return 1 on success,it should call
tcp_set_allowed_congestion_control to set the allowed congestion
control.But, it don't.  the sysctl_string return 1 on success,
otherwise return negative, never return 0.The patch fix the problem.

Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/sysctl_net_ipv4.c

index 82cdf23837e3e8b9766ba5f7dbb28634a20c2675..88286f35d1e266ec6aad248c5328d17891cdcc0c 100644 (file)
@@ -185,7 +185,7 @@ static int strategy_allowed_congestion_control(ctl_table *table, int __user *nam
 
        tcp_get_available_congestion_control(tbl.data, tbl.maxlen);
        ret = sysctl_string(&tbl, name, nlen, oldval, oldlenp, newval, newlen);
-       if (ret == 0 && newval && newlen)
+       if (ret == 1 && newval && newlen)
                ret = tcp_set_allowed_congestion_control(tbl.data);
        kfree(tbl.data);