netdev - Re: [patch net-next v4 3/4] net: core: add SW stats to if_stats

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Date:	Thu, 16 Jun 2016 17:20:48 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jiri@...nulli.us
Cc:	netdev@...r.kernel.org, nogahf@...lanox.com, idosch@...lanox.com,
	eladr@...lanox.com, yotamg@...lanox.com, ogerlitz@...lanox.com,
	roopa@...ulusnetworks.com, nikolay@...ulusnetworks.com,
	linville@...driver.com, tgraf@...g.ch, gospo@...ulusnetworks.com,
	sfeldma@...il.com, sd@...asysnail.net, eranbe@...lanox.com,
	ast@...mgrid.com, edumazet@...gle.com, hannes@...essinduktion.org,
	f.fainelli@...il.com
Subject: Re: [patch net-next v4 3/4] net: core: add SW stats to if_stats_msg

From: Jiri Pirko <jiri@...nulli.us>
Date: Thu, 16 Jun 2016 10:37:16 +0200

> @@ -1068,6 +1068,11 @@ static int rtnl_phys_switch_id_fill(struct sk_buff *skb, struct net_device *dev)
>  	return 0;
>  }
>  
> +static void copy_rtnl_link_stats64(void *v, const struct rtnl_link_stats64 *b)
> +{
> +	memcpy(v, b, sizeof(*b));
> +}
 ...
> +	struct rtnl_link_stats64 *stats64_sp = NULL;
> +	struct rtnl_link_stats64 *sp;
 ...
> +				copy_rtnl_link_stats64(sp, stats64_sp);

I don't see any reason why copy_rtnl_link_stats64's first argument should be
"void *".  Please make it "struct rtnl_link_stats64 *".

In fact just doing a straight memcpy() inline is probably the best, there are
no special typing nor casting requirements here.

Thanks.