netdev - Re: [PATCH net] tipc: not enable tipc when ipv6 works as a module

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Message-Id: <20200817.143731.2031150170446785853.davem@davemloft.net>
Date:   Mon, 17 Aug 2020 14:37:31 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     xiyou.wangcong@...il.com
Cc:     rdunlap@...radead.org, lucien.xin@...il.com,
        netdev@...r.kernel.org, jmaloy@...hat.com, ying.xue@...driver.com,
        tipc-discussion@...ts.sourceforge.net
Subject: Re: [PATCH net] tipc: not enable tipc when ipv6 works as a module

From: Cong Wang <xiyou.wangcong@...il.com>
Date: Mon, 17 Aug 2020 13:29:40 -0700

> On Mon, Aug 17, 2020 at 12:55 PM Randy Dunlap <rdunlap@...radead.org> wrote:
>>
>> TIPC=m and IPV6=m builds just fine.
>>
>> Having tipc autoload ipv6 is a different problem. (IMO)
>>
>>
>> This Kconfig entry:
>>  menuconfig TIPC
>>         tristate "The TIPC Protocol"
>>         depends on INET
>> +       depends on IPV6 || IPV6=n
>>
>> says:
>> If IPV6=n, TIPC can be y/m/n.
>> If IPV6=y/m, TIPC is limited to whatever IPV6 is set to.
> 
> Hmm, nowadays we _do_ have IPV6=y on popular distros.
> So this means TIPC would have to be builtin after this patch??

Note the word "limited", ipv6=y allows y and m, ipv6=m (more limited)
allows only m.