Subject: Re: [PATCH v3 net-next 1/3] bridge: Add a default_pvid sysfs attribute

From: Toshiaki Makita <[email-masked]>
Date: Fri, 03 Oct 2014 23:31:02 +0900

(14/10/03 (金) 22:42), Vlad Yasevich wrote:
> On 10/02/2014 09:08 PM, Toshiaki Makita wrote:
>> On 2014/10/03 8:54, Vladislav Yasevich wrote:
>>> This patch allows the user to set and retrieve default_pvid
>>> value.  A new value can only be stored when vlan filtering
>>> is disabled.
>>>
>>> Signed-off-by: Vladislav Yasevich <[email-masked]>
>>> ---
>> ...
>>> +int br_vlan_set_default_pvid(struct net_bridge *br, unsigned long val)
>>> +{
>>> +	u16 pvid = val;
>>> +	int err = 0;
>>> +
>>> +	if (!val || val >= VLAN_VID_MASK)
>>> +		return -EINVAL;
>>> +
>>> +	if (!rtnl_trylock())
>>> +		return restart_syscall();
>>> +
>>> +	if (pvid == br->default_pvid)
>>> +		goto unlock;
>>> +
>>> +	/* Only allow default pvid change when filtering is disabled */
>>> +	if (br->vlan_enabled) {
>>> +		pr_info_once("Please disable vlan filtering to change default_pvid\n");
>>> +		err = -EPERM;
>>> +		goto unlock;
>>> +	}
>>> +
>>> +	br->default_pvid = vid;
>>
>> typo: s/vid/pvid/
> 
> How the hell did this even build then...!  Oh,  the last patch moved it elsewhere and
> fixed it.
> 
> Fixed.

This can break bisect, so I think this patch itself should be fixed.

Thanks,
Toshiaki Makita