linux-kernel - Re: [PATCH net] team: Move team device type change at the end of team_port

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Message-ID: <admyw5vnd3hup26xew7yxfwqo4ypr5sfb3esk7spv4jx3yqpxu@g47iffagagah>
Date: Wed, 19 Nov 2025 18:03:09 +0100
From: Jiri Pirko <jiri@...nulli.us>
To: "Nikola Z. Ivanov" <zlatistiv@...il.com>
Cc: Paolo Abeni <pabeni@...hat.com>, andrew+netdev@...n.ch, 
	davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, netdev@...r.kernel.org, 
	linux-kernel@...r.kernel.org, skhan@...uxfoundation.org, david.hunter.linux@...il.com, 
	khalid@...nel.org, linux-kernel-mentees@...ts.linuxfoundation.org, 
	syzbot+a2a3b519de727b0f7903@...kaller.appspotmail.com
Subject: Re: [PATCH net] team: Move team device type change at the end of
 team_port_add

Wed, Nov 19, 2025 at 05:24:37PM +0100, zlatistiv@...il.com wrote:
>On Wed, Nov 19, 2025 at 05:10:15PM +0100, Jiri Pirko wrote:
>> Tue, Nov 18, 2025 at 12:46:36PM +0100, pabeni@...hat.com wrote:
>> >On 11/12/25 1:34 AM, Nikola Z. Ivanov wrote:
>> >> @@ -1233,6 +1231,10 @@ static int team_port_add(struct team *team, struct net_device *port_dev,
>> >>  		}
>> >>  	}
>> >>  
>> >> +	err = team_dev_type_check_change(dev, port_dev);
>> >> +	if (err)
>> >> +		goto err_set_dev_type;
>> >
>> >Please don't add unneeded new labels, instead reuse the exiting
>> >`err_set_slave_promisc`.
>> 
>> Well, that is how error labels are done in team. "action" and
>> "err_action" is always paired. Why to break this consistent pattern?
>
>Hi Jiri,
>
>This pattern is already broken in the same function by this:
>
>        /* set promiscuity level to new slave */
>        if (dev->flags & IFF_PROMISC) {
>                err = dev_set_promiscuity(port_dev, 1);
>                if (err)
>                        goto err_set_slave_promisc;
>        }
>
>        /* set allmulti level to new slave */
>        if (dev->flags & IFF_ALLMULTI) {
>                err = dev_set_allmulti(port_dev, 1);
>                if (err) {
>                        if (dev->flags & IFF_PROMISC)
>                                dev_set_promiscuity(port_dev, -1);
>                        goto err_set_slave_promisc;
>                }
>        }
>
>So I guess I should also "break" it or do it as you've just
>suggested and add another label "err_set_slave_allmulti"
>so that we are at least consistent with this.

:( I think it would be fine to fix it, by another patch targetting
   net-next tree. Thanks!

>
>Thank you!