netdev - Re: [RFC PATCH 12/13] net: dsa: tag_gswip: let DSA core deal with TX reallocation

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Date:   Sat, 17 Oct 2020 22:19:47 +0000
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC:     "andrew@...n.ch" <andrew@...n.ch>,
        "f.fainelli@...il.com" <f.fainelli@...il.com>,
        "vivien.didelot@...il.com" <vivien.didelot@...il.com>,
        "kuba@...nel.org" <kuba@...nel.org>,
        Christian Eggers <ceggers@...i.de>,
        Kurt Kanzenbach <kurt@...utronix.de>,
        Hauke Mehrtens <hauke@...ke-m.de>
Subject: Re: [RFC PATCH 12/13] net: dsa: tag_gswip: let DSA core deal with TX
 reallocation

On Sun, Oct 18, 2020 at 12:36:10AM +0300, Vladimir Oltean wrote:
> diff --git a/net/dsa/tag_gswip.c b/net/dsa/tag_gswip.c
> index 408d4af390a0..cde93ccb21ac 100644
> --- a/net/dsa/tag_gswip.c
> +++ b/net/dsa/tag_gswip.c
> @@ -63,10 +63,6 @@ static struct sk_buff *gswip_tag_xmit(struct sk_buff *skb,
>  	int err;

Unused variable "err" left behind, will delete.

>  	u8 *gswip_tag;
>
> -	err = skb_cow_head(skb, GSWIP_TX_HEADER_LEN);
> -	if (err)
> -		return NULL;
> -
>  	skb_push(skb, GSWIP_TX_HEADER_LEN);
>
>  	gswip_tag = skb->data;
> --