netdev - Re: [PATCH net-next 11/13] net: fec: fec_enet_rx

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Message-ID: <ZxB7PUEr48EqmOQJ@lizhi-Precision-Tower-5810>
Date: Wed, 16 Oct 2024 22:49:33 -0400
From: Frank Li <Frank.li@....com>
To: Marc Kleine-Budde <mkl@...gutronix.de>
Cc: Wei Fang <wei.fang@....com>, Shenwei Wang <shenwei.wang@....com>,
	Clark Wang <xiaoning.wang@....com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Richard Cochran <richardcochran@...il.com>, imx@...ts.linux.dev,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel@...gutronix.de
Subject: Re: [PATCH net-next 11/13] net: fec: fec_enet_rx_queue(): reduce
 scope of data

On Wed, Oct 16, 2024 at 11:51:59PM +0200, Marc Kleine-Budde wrote:
> In order to clean up of the VLAN handling, reduce the scope of data.
>

Reviewed-by: Frank Li <Frank.Li@....com>

> Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
> ---
>  drivers/net/ethernet/freescale/fec_main.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
> index fd7a78ec5fa8ac0f7d141779938a4690594dbef1..640fbde10861005e7e2eb23358bfeaac49ec1792 100644
> --- a/drivers/net/ethernet/freescale/fec_main.c
> +++ b/drivers/net/ethernet/freescale/fec_main.c
> @@ -1686,7 +1686,6 @@ fec_enet_rx_queue(struct net_device *ndev, u16 queue_id, int budget)
>  	unsigned short status;
>  	struct  sk_buff *skb;
>  	ushort	pkt_len;
> -	__u8 *data;
>  	int	pkt_received = 0;
>  	struct	bufdesc_ex *ebdp = NULL;
>  	bool	vlan_packet_rcvd = false;
> @@ -1803,10 +1802,11 @@ fec_enet_rx_queue(struct net_device *ndev, u16 queue_id, int budget)
>  		skb_mark_for_recycle(skb);
>
>  		if (unlikely(need_swap)) {
> +			u8 *data;
> +
>  			data = page_address(page) + FEC_ENET_XDP_HEADROOM;
>  			swap_buffer(data, pkt_len);
>  		}
> -		data = skb->data;
>
>  		/* Extract the enhanced buffer descriptor */
>  		ebdp = NULL;
> @@ -1824,7 +1824,7 @@ fec_enet_rx_queue(struct net_device *ndev, u16 queue_id, int budget)
>
>  			vlan_packet_rcvd = true;
>
> -			memmove(skb->data + VLAN_HLEN, data, ETH_ALEN * 2);
> +			memmove(skb->data + VLAN_HLEN, skb->data, ETH_ALEN * 2);
>  			skb_pull(skb, VLAN_HLEN);
>  		}
>
>
> --
> 2.45.2
>
>