netdev - Re: [PATCH net-next 1/5] bridge: initialize port flags with switchdev defaults

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Date:   Mon, 12 Mar 2018 11:44:14 -0700
From:   Igor Mitsyanko <igor.mitsyanko.os@...ntenna.com>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     bridge@...ts.linux-foundation.org, netdev@...r.kernel.org,
        sergey.matyukevich.os@...ntenna.com, smaksimenko@...ntenna.com,
        ashevchenko@...ntenna.com, dlebed@...ntenna.com, jiri@...nulli.us,
        ivecera@...hat.com
Subject: Re: [PATCH net-next 1/5] bridge: initialize port flags with switchdev
 defaults

On 03/10/2018 08:30 AM, Andrew Lunn wrote:
>> +
>> +     ret = switchdev_port_attr_get(dev, &attr);
>> +     if (ret)
>> +             return BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | BR_BCAST_FLOOD;
> 
> 
> Hi Igor
> 
> Please check if ret == -EOPNOTSUPP and only then use the defaults. A
> real error should be propagated, causing new_nbp to fail. You might
> also consider what to do when ENODATA is returned.
> 
>       Andrew
> 

Hi Andrew,
ok, will change it so an error is propagated.
There is one more comment from Stephen suggesting that flags must be set 
in switchdev, rather then queried: this approach should take care about 
ENODATA I assume.