netdev - Re: [PATCH net-next v4 03/10] net: ethtool: netlink: Add support for triggering a cable test

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Date:   Wed, 1 Jul 2020 17:26:23 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     David Miller <davem@...emloft.net>, kuba@...nel.org
Cc:     andrew@...n.ch, netdev@...r.kernel.org, hkallweit1@...il.com,
        cphealy@...il.com, mkubecek@...e.cz
Subject: Re: [PATCH net-next v4 03/10] net: ethtool: netlink: Add support for
 triggering a cable test



On 7/1/2020 4:00 PM, David Miller wrote:
> From: Jakub Kicinski <kuba@...nel.org>
> Date: Wed, 1 Jul 2020 15:56:21 -0700
> 
>> On Sun, 10 May 2020 21:12:33 +0200 Andrew Lunn wrote:
>>> diff --git a/net/Kconfig b/net/Kconfig
>>> index c5ba2d180c43..5c524c6ee75d 100644
>>> --- a/net/Kconfig
>>> +++ b/net/Kconfig
>>> @@ -455,6 +455,7 @@ config FAILOVER
>>>  config ETHTOOL_NETLINK
>>>  	bool "Netlink interface for ethtool"
>>>  	default y
>>> +	depends on PHYLIB=y || PHYLIB=n
>>>  	help
>>>  	  An alternative userspace interface for ethtool based on generic
>>>  	  netlink. It provides better extensibility and some new features,
>>
>> Since ETHTOOL_NETLINK is a bool we end up not enabling it on
>> allmodconfig builds, (PHYLIB=m so ETHTOOL_NETLINK dependency 
>> can't be met) - which is v scary for build testing.
>>
>> Is there a way we can change this dependency? Some REACHABLE shenanigans?
>>
>> Or since there are just two callbacks maybe phylib can "tell" ethtool
>> core the pointers to call when it loads?
> 
> This has been discussed a few times and it's very irritating to me as well
> as allmodconfig is the standard test build I do for all new changes.

Yes this is annoying, I will have some patches posted tonight that
untangle the dependency.
-- 
Florian