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

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Message-ID: <CAM_iQpVkDg3WKik_j98gdvVirkQdaTQ2zzg8GVzBeij6i+aNnQ@mail.gmail.com>
Date:   Mon, 17 Aug 2020 11:55:55 -0700
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     Xin Long <lucien.xin@...il.com>,
        network dev <netdev@...r.kernel.org>,
        David Miller <davem@...emloft.net>,
        Jon Maloy <jmaloy@...hat.com>,
        Ying Xue <ying.xue@...driver.com>,
        tipc-discussion@...ts.sourceforge.net
Subject: Re: [PATCH net] tipc: not enable tipc when ipv6 works as a module

On Mon, Aug 17, 2020 at 11:49 AM Randy Dunlap <rdunlap@...radead.org> wrote:
>
> On 8/17/20 11:31 AM, Cong Wang wrote:
> > On Sun, Aug 16, 2020 at 11:37 PM Xin Long <lucien.xin@...il.com> wrote:
> >>
> >> On Mon, Aug 17, 2020 at 2:29 AM Cong Wang <xiyou.wangcong@...il.com> wrote:
> >>>
> >>> Or put it into struct ipv6_stub?
> >> Hi Cong,
> >>
> >> That could be one way. We may do it when this new function becomes more common.
> >> By now, I think it's okay to make TIPC depend on IPV6 || IPV6=n.
> >
> > I am not a fan of IPV6=m, but disallowing it for one symbol seems
> > too harsh.
>
> Hi,
>
> Maybe I'm not following you, but this doesn't disallow IPV6=m.

Well, by "disallowing IPV6=m" I meant "disallowing IPV6=m when
enabling TIPC" for sure... Sorry that it misleads you to believe
completely disallowing IPV6=m globally.

>
> It just restricts how TIPC can be built, so that
> TIPC=y and IPV6=m cannot happen together, which causes
> a build error.

It also disallows TIPC=m and IPV6=m, right? In short, it disalows
IPV6=m when TIPC is enabled. And this is exactly what I complain,
as it looks too harsh.

Thanks.