netdev - Re: [PATCH net-next v2 12/12] net: hldc_fr: use dev_addr

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Date:   Fri, 22 Oct 2021 08:22:08 +0200
From:   Krzysztof Hałasa <khalasa@...p.pl>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     davem@...emloft.net, netdev@...r.kernel.org
Subject: Re: [PATCH net-next v2 12/12] net: hldc_fr: use dev_addr_set()

Jakub Kicinski <kuba@...nel.org> writes:

> Commit 406f42fa0d3c ("net-next: When a bond have a massive amount
> of VLANs...") introduced a rbtree for faster Ethernet address look
> up. To maintain netdev->dev_addr in this tree we need to make all
> the writes to it got through appropriate helpers.
>
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>

Acked-by: Krzysztof Hałasa <khalasa@...p.pl>

> --- a/drivers/net/wan/hdlc_fr.c
> +++ b/drivers/net/wan/hdlc_fr.c
> @@ -1093,7 +1093,9 @@ static int fr_add_pvc(struct net_device *frad, unsigned int dlci, int type)
>  		dev->priv_flags &= ~IFF_TX_SKB_SHARING;
>  		eth_hw_addr_random(dev);
>  	} else {
> -		*(__be16 *)dev->dev_addr = htons(dlci);
> +		__be16 addr = htons(dlci);
> +
> +		dev_addr_set(dev, (u8 *)&addr);
>  		dlci_to_q922(dev->broadcast, dlci);
>  	}
>  	dev->netdev_ops = &pvc_ops;

-- 
Krzysztof "Chris" Hałasa

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