netdev - Re: [PATCH net-next 5/9] wireguard: use dev_sw_netstats_rx

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Date:   Wed, 8 Jun 2022 09:36:10 +0200
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     Eric Dumazet <eric.dumazet@...il.com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>
Subject: Re: [PATCH net-next 5/9] wireguard: use dev_sw_netstats_rx_add()

Hi Eric,

On Tue, Jun 07, 2022 at 04:36:10PM -0700, Eric Dumazet wrote:
> From: Eric Dumazet <edumazet@...gle.com>
> 
> We have a convenient helper, let's use it.
> This will make the following patch easier to review and smaller.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Cc: Jason A. Donenfeld <Jason@...c4.com>

The subject line should be:

    wireguard: receive: use dev_sw_netstats_rx_add()

Please don't commit it before changing that. With that addressed,

    Acked-by: Jason A. Donenfeld <Jason@...c4.com>

Regards,
Jason

>  drivers/net/wireguard/receive.c | 9 +--------
>  1 file changed, 1 insertion(+), 8 deletions(-)
> 
> diff --git a/drivers/net/wireguard/receive.c b/drivers/net/wireguard/receive.c
> index 7b8df406c7737398f0270361afcb196af4b6a76e..7135d51d2d872edb66c856379ce2923b214289e9 100644
> --- a/drivers/net/wireguard/receive.c
> +++ b/drivers/net/wireguard/receive.c
> @@ -19,15 +19,8 @@
>  /* Must be called with bh disabled. */
>  static void update_rx_stats(struct wg_peer *peer, size_t len)
>  {
> -	struct pcpu_sw_netstats *tstats =
> -		get_cpu_ptr(peer->device->dev->tstats);
> -
> -	u64_stats_update_begin(&tstats->syncp);
> -	++tstats->rx_packets;
> -	tstats->rx_bytes += len;
> +	dev_sw_netstats_rx_add(peer->device->dev, len);
>  	peer->rx_bytes += len;
> -	u64_stats_update_end(&tstats->syncp);
> -	put_cpu_ptr(tstats);
>  }
>  
>  #define SKB_TYPE_LE32(skb) (((struct message_header *)(skb)->data)->type)
> -- 
> 2.36.1.255.ge46751e96f-goog
>