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Date: Tue, 3 Mar 2026 18:24:29 -0800
From: Jakub Kicinski <kuba@kernel.org>
To: Eric Dumazet <edumazet@google.com>
Cc: "David S . Miller" <davem@davemloft.net>, Paolo Abeni
 <pabeni@redhat.com>, Simon Horman <horms@kernel.org>, Kuniyuki Iwashima
 <kuniyu@google.com>, netdev@vger.kernel.org, eric.dumazet@gmail.com, Ido
 Schimmel <idosch@nvidia.com>
Subject: Re: [PATCH net-next] ipv6: add IPV6_CALL() helper
Message-ID: <20260303182429.49645ce8@kernel.org>
In-Reply-To: <CANn89iKBDxAqT4MGGuQ8xxXjbNRo7HadXoYYq5QpyP0S_4rfTA@mail.gmail.com>
References: <20260302154201.1621117-1-edumazet@google.com>
	<20260303170841.218b0816@kernel.org>
	<CANn89iKBDxAqT4MGGuQ8xxXjbNRo7HadXoYYq5QpyP0S_4rfTA@mail.gmail.com>
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On Wed, 4 Mar 2026 03:13:40 +0100 Eric Dumazet wrote:
> On Wed, Mar 4, 2026 at 2:08=E2=80=AFAM Jakub Kicinski <kuba@kernel.org> w=
rote:
> >
> > On Mon,  2 Mar 2026 15:42:01 +0000 Eric Dumazet wrote: =20
> > > ipv6_stub use is racy, we should add READ_ONCE() and WRITE_ONCE(),
> > > even if this pointer can only change once.
> > >
> > > Add IPV6_CALL() macro to factorize the READ_ONCE(), and perform
> > > direct calls when CONFIG_IPV6=3Dy. =20
> >
> > Does not apply to net-next.
> > It sounds like we're going to remove IPV6=3Dm, however, perhaps transfo=
rm
> > this patch into that removal? =20
>=20
> This seems orthogonal, unless the plan is to force IPV6=3Dy ?

I thought if we remove IPV6=3Dm we would delete ipv6_stub completely?