netdev - Re: wake-on-lan

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Date:   Thu, 16 Jul 2020 09:02:59 +0200
From:   "Michael J. Baars" <mjbaars1977.netdev@...erfiber.eu>
To:     Heiner Kallweit <hkallweit1@...il.com>,
        Michal Kubecek <mkubecek@...e.cz>
Cc:     netdev@...r.kernel.org
Subject: Re: wake-on-lan

On Wed, 2020-07-15 at 15:17 +0200, Heiner Kallweit wrote:
> On 15.07.2020 11:27, Michael J. Baars wrote:
> > Hi Michal,
> > 
> > This is my network card:
> > 
> > 01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
> > RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c)
> > 	Subsystem: Realtek Semiconductor Co., Ltd. Device 0123
> > 	Kernel driver in use: r8169
> > 
> > On the Realtek website (
> > https://www.realtek.com/en/products/communications-network-ics/item/rtl8168e
> > ) it says that both wake-on-lan and remote wake-on-lan are
> > supported. I got the wake-on-lan from my local network working, but
> > I have problems getting the remote wake-on-lan to work.
> > 
> > When I set 'Wake-on' to 'g' and suspend my system, everything works
> > fine (the router does lose the ip address assigned to the mac
> > address of the system). I
> > figured the SecureOn password is meant to forward magic packets to
> > the correct machine when the router does not have an ip address
> > assigned to a mac address,
> > i.e. port-forwarding does not work.
> > 
> > Ethtool 'Supports Wake-on' gives 'pumbg', and when I try to set
> > 'Wake-on' to 's' I get:
> > 
> > netlink error: cannot enable unsupported WoL mode (offset 36)
> > netlink error: Invalid argument
> > 
> > Does this mean that remote wake-on-lan is not supported (according
> > to ethtool)?
> > 
> > ---
> > 
> > I also tried to set 'Wake-on' to 'b' and 'bg' but then the systems
> > turns back on almost immediately for both settings.
> > 
> > ---
> > 
> > Hope you can help getting the remote wake-on-lan to work,
> > 
> > Best regards,
> > Mischa.
> > 
> > 
> > 
> > 
> This isn't really a question to Michal. r8169 supports pumbg as
> mentioned by you.
> On DASH-capable systems with Windows more may be supported by the
> vendor driver.
> But Realtek doesn't release any public datasheets, therefore there's
> no DASH support under Linux.

They do provide open-source drivers :)