netdev - Re: WoL broken in r8169.c since kernel 4.19

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Date:   Fri, 1 Feb 2019 07:49:09 +0100
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Marc Haber <mh+netdev@...schlus.de>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: WoL broken in r8169.c since kernel 4.19

Great, thanks. This patch has been applied and is part of latest linux-next kernel already:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/tree/?h=next-20190201
Would be much appreciated if you could build and test this kernel version.

Heiner

On 30.01.2019 16:37, Marc Haber wrote:
> On Tue, Jan 29, 2019 at 10:20:48PM +0100, Heiner Kallweit wrote:
>> one more attempt, could you please test the following with 4.19 or 4.20
>> (w/o the other debug patches) ?
> 
> With the following patch, the machine wakes up fine on a WoL magic
> packet:
> 
> nux-4.20.5/drivers/net/ethernet/realtek/r8169.c   2019-01-30 16:03:00.090841076 +0100
> +++ orig/linux-4.20.5/drivers/net/ethernet/realtek/r8169.c      2019-01-26 09:20:52.000000000 +0100
> @@ -1418,7 +1418,6 @@
> 
>  #define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)
> 
> -#if 0
>  static u32 __rtl8169_get_wol(struct rtl8169_private *tp)
>  {
>         u8 options;
> @@ -1453,7 +1452,6 @@
> 
>         return wolopts;
>  }
> -#endif
> 
>  static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
>  {
> @@ -1463,8 +1461,6 @@
>         wol->supported = WAKE_ANY;
>         wol->wolopts = tp->saved_wolopts;
>         rtl_unlock_work(tp);
> -
> -       pr_info("get_wol: 0x%08x\n", wol->wolopts);
>  }
> 
>  static void __rtl8169_set_wol(struct rtl8169_private *tp, u32 wolopts)
> @@ -1540,8 +1536,6 @@
>         struct rtl8169_private *tp = netdev_priv(dev);
>         struct device *d = tp_to_dev(tp);
> 
> -       pr_info("set_wol: 0x%08x\n", wol->wolopts);
> -
>         if (wol->wolopts & ~WAKE_ANY)
>                 return -EINVAL;
> 
> @@ -4174,7 +4168,7 @@
>  {
>         struct phy_device *phydev;
> 
> -       if (!device_may_wakeup(tp_to_dev(tp)))
> +       if (!__rtl8169_get_wol(tp))
>                 return false;
> 
>         /* phydev may not be attached to netdevice */
> @@ -7372,6 +7366,8 @@
>                 return rc;
>         }
> 
> +       tp->saved_wolopts = __rtl8169_get_wol(tp);
> +
>         mutex_init(&tp->wk.mutex);
>         u64_stats_init(&tp->rx_stats.syncp);
>         u64_stats_init(&tp->tx_stats.syncp);
> 1 [14/5006]mh@fan:~/linux/4.20.5 $
> 
> I'll send the dmesg output to you in private e-mail
> 
> Greetings
> Marc
>