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Date:   Fri, 30 Sep 2022 16:23:07 +0200
From:   Nicolas Dichtel <nicolas.dichtel@...nd.com>
To:     Hangbin Liu <liuhangbin@...il.com>, netdev@...r.kernel.org
Cc:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Ido Schimmel <idosch@...dia.com>,
        Petr Machata <petrm@...dia.com>,
        Florent Fourcot <florent.fourcot@...irst.fr>,
        Nikolay Aleksandrov <razor@...ckwall.org>,
        Guillaume Nault <gnault@...hat.com>,
        David Ahern <dsahern@...nel.org>
Subject: Re: [PATCHv5 net-next 2/4] net: add new helper
 unregister_netdevice_many_notify

Le 30/09/2022 à 11:45, Hangbin Liu a écrit :
> Add new helper unregister_netdevice_many_notify(), pass netlink message
> header and port id, which could be used to notify userspace when flag
> NLM_F_ECHO is set.
> 
> Make the unregister_netdevice_many() as a wrapper of new function
> unregister_netdevice_many_notify().
> 
> Suggested-by: Guillaume Nault <gnault@...hat.com>
> Signed-off-by: Hangbin Liu <liuhangbin@...il.com>

[snip]

> @@ -10860,7 +10864,7 @@ void unregister_netdevice_many(struct list_head *head)
>  			dev->netdev_ops->ndo_uninit(dev);
>  
>  		if (skb)
> -			rtmsg_ifinfo_send(skb, dev, GFP_KERNEL, 0, NULL);
> +			rtmsg_ifinfo_send(skb, dev, GFP_KERNEL, pid, nlh);
>  
>  		/* Notifier chain MUST detach us all upper devices. */
>  		WARN_ON(netdev_has_any_upper_dev(dev));
> @@ -10883,6 +10887,12 @@ void unregister_netdevice_many(struct list_head *head)
>  
>  	list_del(head);
>  }
> +EXPORT_SYMBOL(unregister_netdevice_many_notify);
Is this export really needed?

> +
> +void unregister_netdevice_many(struct list_head *head)
> +{
> +	unregister_netdevice_many_notify(head, NULL, 0);
> +}
>  EXPORT_SYMBOL(unregister_netdevice_many);
>  
>  /**

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