netdev - Re: [Bridge] [PATCH net-next v4 2/2] bridge: vlan: signal if anything changed on vlan add

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Message-ID: <0f1e8fb5-b9a8-b363-c080-65c23f76b25e@cumulusnetworks.com>
Date:   Thu, 26 Oct 2017 14:08:02 +0300
From:   Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
To:     Toshiaki Makita <makita.toshiaki@....ntt.co.jp>,
        netdev@...r.kernel.org
Cc:     roopa@...ulusnetworks.com, bridge@...ts.linux-foundation.org,
        mrv@...atatu.com, dsa@...ulusnetworks.com, davem@...emloft.net
Subject: Re: [Bridge] [PATCH net-next v4 2/2] bridge: vlan: signal if anything
 changed on vlan add

On 26/10/17 14:02, Nikolay Aleksandrov wrote:
> On 26/10/17 13:16, Toshiaki Makita wrote:
>> On 2017/10/26 7:52, Nikolay Aleksandrov wrote:
>> ...
>>> @@ -559,6 +574,7 @@ int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
>>>  
>>>  	ASSERT_RTNL();
>>>  
>>> +	*changed = false;
>>>  	vg = br_vlan_group(br);
>>>  	vlan = br_vlan_find(vg, vid);
>>>  	if (vlan) {
>>> @@ -576,9 +592,12 @@ int br_vlan_add(struct net_bridge *br, u16 vid, u16 flags)
>>>  			refcount_inc(&vlan->refcnt);
>>>  			vlan->flags |= BRIDGE_VLAN_INFO_BRENTRY;
>>>  			vg->num_vlans++;
>>> +			*changed = true;
>>>  		}
>>> -		__vlan_add_flags(vlan, flags);
>>> -		return 0;
>>> +		if (__vlan_add_flags(vlan, flags))
>>> +			*changed = true;
>>> +
>>> +		return ret;
>>
>> "ret" isn't always initialized here, is it?
>>
>>
>> Toshiaki Makita
> 
> Oh, good catch! Right you are, weird that there was no warning even with W=1 as
> I always check that before sending a set.
> 
> Thanks,
>  Nik
> 

Unfortunately that was a leftover from v0 of this set where I always initialized ret.
Will fix and send v5, thanks again.