From: shanwei <shanwei@cn.fujitsu.com>
To: Stephen Hemminger <shemminger@linux-foundation.org>
Cc: davem@davemloft.net, netdev@vger.kernel.org,
Sam Jansen <sjansen@google.com>
Subject: Re: [PATCH] TCP:Fix a bug in strategy_allowed_congestion_control
Date: Mon, 28 Jan 2008 10:05:35 +0800 [thread overview]
Message-ID: <479D386F.5030805@cn.fujitsu.com> (raw)
In-Reply-To: <20080125082553.78e1d207@deepthought>
Stephen Hemminger 写道:
> On Fri, 25 Jan 2008 15:10:13 +0800
> shanwei <shanwei@cn.fujitsu.com> wrote:
>
>> hi all:
>>
>> 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>
>>
>> diff -Nuarp linux-2.6.24/net/ipv4/sysctl_net_ipv4.c linux-2.6.24-new/net/ipv4/sysctl_net_ipv4.c
>> --- linux-2.6.24/net/ipv4/sysctl_net_ipv4.c 2008-01-25 06:58:37.000000000 +0800
>> +++ linux-2.6.24-new/net/ipv4/sysctl_net_ipv4.c 2008-01-25 12:23:20.000000000 +0800
>> @@ -248,7 +248,7 @@ static int strategy_allowed_congestion_c
>>
>> 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);
>>
>>
>
> Acked-by: Stephen Hemminger <shemminger@vyatta.com>
>
> This parallels previous fix by Sam Jansen.
>
>
From the link:http://marc.info/?l=linux-netdev&m=119551836927062&w=2,
he only fix the sysctl_tcp_congestion_control function.
In the latest kernel, the sysctl_string problem is present.
Can this patch be applied?
next prev parent reply other threads:[~2008-01-28 2:06 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <47998B55.1030305@cn.fujitsu.com>
2008-01-25 16:25 ` [PATCH] TCP:Fix a bug in strategy_allowed_congestion_control Stephen Hemminger
2008-01-28 2:05 ` shanwei [this message]
2008-02-01 0:47 ` David Miller
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