netdev - Re: [PATCH net-next 1/4] bonding: update the primary when slave name changed

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Date:	Thu, 9 Jan 2014 20:23:58 +0800
From:	Ding Tianhong <dingtianhong@...wei.com>
To:	Veaceslav Falico <vfalico@...hat.com>
CC:	Jay Vosburgh <fubar@...ibm.com>,
	"David S. Miller" <davem@...emloft.net>,
	Netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next 1/4] bonding: update the primary when slave name
 changed

On 2014/1/9 19:46, Veaceslav Falico wrote:
> On Thu, Jan 09, 2014 at 07:20:36PM +0800, Ding Tianhong wrote:
>> If the primary_slave's name changed, but the bond->prams.primay was
>> still using the old name, it is conflict with the meaning of the
>> primary, so update the primary when the slave change its name.
> 
> Nope, the bonding parameter, which is set by the user, shouldn't change
> because of an interface name change.
> 
Yes, I know what you mean, but it is not bug fix, just make it more better,
do not you feel it strange that the primary was different with primary_slave's name?

Regards
Ding


>>
>> Signed-off-by: Ding Tianhong <dingtianhong@...wei.com>
>> ---
>> drivers/net/bonding/bond_main.c | 14 ++++++++++++--
>> 1 file changed, 12 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
>> index e06c445..de646e2 100644
>> --- a/drivers/net/bonding/bond_main.c
>> +++ b/drivers/net/bonding/bond_main.c
>> @@ -2860,9 +2860,19 @@ static int bond_slave_netdev_event(unsigned long event,
>>          */
>>         break;
>>     case NETDEV_CHANGENAME:
>> -        /*
>> -         * TODO: handle changing the primary's name
>> +        /* if the primary's name changed,
>> +         * save the new name for primary.
>>          */
>> +        if (USES_PRIMARY(bond->params.mode) &&
>> +            bond->params.primary[0]) {
>> +            if (bond->primary_slave &&
>> +                strcmp(bond->params.primary,
>> +                   bond->primary_slave->dev->name)) {
>> +                strncpy(bond->params.primary,
>> +                    bond->primary_slave->dev->name,
>> +                    IFNAMSIZ);
>> +            }
>> +        }
>>         break;
>>     case NETDEV_FEAT_CHANGE:
>>         bond_compute_features(bond);
>> -- 
>> 1.8.0
>>
>>
> 
> 


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