netdev - Re: [PATCH net-next] drivers/net/wan/x25_asy: Remove an unnecessary x25_type

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Date:   Mon, 14 Sep 2020 07:32:54 +0200
From:   Martin Schiller <ms@....tdt.de>
To:     Xie He <xie.he.0141@...il.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] drivers/net/wan/x25_asy: Remove an unnecessary
 x25_type_trans call

On 2020-09-12 04:18, Xie He wrote:
> x25_type_trans only needs to be called before we call netif_rx to pass
> the skb to upper layers.
> 
> It does not need to be called before lapb_data_received. The LAPB 
> module
> does not need the fields that are set by calling it.
> 
> In the other two X.25 drivers - lapbether and hdlc_x25. x25_type_trans
> is only called before netif_rx and not before lapb_data_received.
> 
> Cc: Martin Schiller <ms@....tdt.de>
> Signed-off-by: Xie He <xie.he.0141@...il.com>
> ---
>  drivers/net/wan/x25_asy.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/net/wan/x25_asy.c b/drivers/net/wan/x25_asy.c
> index 5a7cf8bf9d0d..ab56a5e6447a 100644
> --- a/drivers/net/wan/x25_asy.c
> +++ b/drivers/net/wan/x25_asy.c
> @@ -202,8 +202,7 @@ static void x25_asy_bump(struct x25_asy *sl)
>  		return;
>  	}
>  	skb_put_data(skb, sl->rbuff, count);
> -	skb->protocol = x25_type_trans(skb, sl->dev);
> -	err = lapb_data_received(skb->dev, skb);
> +	err = lapb_data_received(sl->dev, skb);
>  	if (err != LAPB_OK) {
>  		kfree_skb(skb);
>  		printk(KERN_DEBUG "x25_asy: data received err - %d\n", err);

Acked-by: Martin Schiller <ms@....tdt.de>