linux-kernel - Re: [PATCH] l2tp: fix l2tp_eth_dev

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Date:   Tue, 24 Apr 2018 17:09:12 +0200
From:   Guillaume Nault <g.nault@...halink.fr>
To:     Luc Van Oostenryck <luc.vanoostenryck@...il.com>
Cc:     linux-kernel@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        James Chapman <jchapman@...alix.com>,
        Dominik Heidler <dheidler@...e.de>, netdev@...r.kernel.org
Subject: Re: [PATCH] l2tp: fix l2tp_eth_dev_xmit()'s return type

On Tue, Apr 24, 2018 at 03:18:53PM +0200, Luc Van Oostenryck wrote:
> The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
> which is a typedef for an enum type, but the implementation in this
> driver returns an 'int'.
> 
> Fix this by returning 'netdev_tx_t' in this driver too.
> 
> Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@...il.com>
> ---
>  net/l2tp/l2tp_eth.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/net/l2tp/l2tp_eth.c b/net/l2tp/l2tp_eth.c
> index 5c366ecfa..e027f8b54 100644
> --- a/net/l2tp/l2tp_eth.c
> +++ b/net/l2tp/l2tp_eth.c
> @@ -77,7 +77,7 @@ static void l2tp_eth_dev_uninit(struct net_device *dev)
>  	 */
>  }
>  
> -static int l2tp_eth_dev_xmit(struct sk_buff *skb, struct net_device *dev)
> +static netdev_tx_t l2tp_eth_dev_xmit(struct sk_buff *skb, struct net_device *dev)
> 
You could easily keep this line under the 80 columns limit by moving
the net_device parameter on the next line.