Re: [PATCH net-next] drivers/net/wan/hdlc_fr: Reduce indentation in pvc_xmit

[Stephen Hemminger]

On Sat,  3 Oct 2020 10:35:28 -0700
Xie He <xie.he.0141@xxxxxxxxx> wrote:

> +	if (dev->type == ARPHRD_ETHER) {
> +		int pad = ETH_ZLEN - skb->len;
> +
> +		if (pad > 0) { /* Pad the frame with zeros */
> +			int len = skb->len;
> +
> +			if (skb_tailroom(skb) < pad)
> +				if (pskb_expand_head(skb, 0, pad, GFP_ATOMIC))
> +					goto drop;
> +			skb_put(skb, pad);
> +			memset(skb->data + len, 0, pad);
>  		}
>  	}

This code snippet is basically an version of skb_pad().
Probably it is very old and pre-dates that.
Could the code use skb_pad?