netdev - Re: [PATCH net] bonding: set primary

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <5286EF79.2080801@gmail.com>
Date:	Sat, 16 Nov 2013 12:07:21 +0800
From:	Ding Tianhong <dthxman@...il.com>
To:	Jay Vosburgh <fubar@...ibm.com>
CC:	Ding Tianhong <dingtianhong@...wei.com>,
	Andy Gospodarek <andy@...yhouse.net>,
	"David S. Miller" <davem@...emloft.net>,
	Nikolay Aleksandrov <nikolay@...hat.com>,
	Veaceslav Falico <vfalico@...hat.com>,
	Netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net] bonding: set primary_reselect in LB and AB mode

于 2013/11/16 2:02, Jay Vosburgh 写道:
> Ding Tianhong <dingtianhong@...wei.com> wrote:
>
>> The primary_reselect only reselection for the primary slave,
>> but the primary slave only support for ALB, TLB and AB mode,
>> so we sould set the primary_reselect for these mode.
>>
>> to fix this: Add a check for ALB, TLB and AB mode in
>> bonding_store_primary_reselect, avoid to select active slave
>> again in other modes.
> 	I don't believe that setting primary_reselect in a
> !USES_PRIMARY() mode has any negative effects.  It doesn't do anything,
> but also doesn't break anything.  Is there a case that setting
> primary_reselect causes misbehavior in a !USES_PRIMARY() mode?
>
> 	Presuming that primary_reselect doesn't break things, this just
> adds an ordering limitation when configuring bonding (mode must be set
> prior to primary_reselect).  I don't believe this change adds any value,
> and may break existing configuration scripts.
>
> 	-J
agree, I could not find any problem here, it is not bugfix, so miss it.

Regards
Ding

>> Signed-off-by: Ding Tianhong <dingtianhong@...wei.com>
>> ---
>> drivers/net/bonding/bond_sysfs.c | 7 +++++++
>> 1 file changed, 7 insertions(+)
>>
>> diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
>> index 47749c9..cac2291 100644
>> --- a/drivers/net/bonding/bond_sysfs.c
>> +++ b/drivers/net/bonding/bond_sysfs.c
>> @@ -1141,6 +1141,13 @@ static ssize_t bonding_store_primary_reselect(struct device *d,
>> 	if (!rtnl_trylock())
>> 		return restart_syscall();
>>
>> +	if (!USES_PRIMARY(bond->params.mode)) {
>> +		pr_info("%s: Unable to set primary reselect; %s is in mode %d\n",
>> +			bond->dev->name, bond->dev->name, bond->params.mode);
>> +		ret = -EINVAL;
>> +		goto out;
>> +	}
>> +
>> 	new_value = bond_parse_parm(buf, pri_reselect_tbl);
>> 	if (new_value < 0)  {
>> 		pr_err("%s: Ignoring invalid primary_reselect value %.*s.\n",
>> -- 
>> 1.7.12
> ---
> 	-Jay Vosburgh, IBM Linux Technology Center, fubar@...ibm.com
>
> --
> To unsubscribe from this list: send the line "unsubscribe netdev" in
> the body of a message to majordomo@...r.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html