linux-kernel - Re: [PATCH net v3 6/9] tun: Extract the vnet handling code

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Message-ID: <678a3414c9b49_3ef8eb29431@willemb.c.googlers.com.notmuch>
Date: Fri, 17 Jan 2025 05:42:28 -0500
From: Willem de Bruijn <willemdebruijn.kernel@...il.com>
To: Akihiko Odaki <akihiko.odaki@...nix.com>, 
 Jonathan Corbet <corbet@....net>, 
 Willem de Bruijn <willemdebruijn.kernel@...il.com>, 
 Jason Wang <jasowang@...hat.com>, 
 "David S. Miller" <davem@...emloft.net>, 
 Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, 
 Paolo Abeni <pabeni@...hat.com>, 
 "Michael S. Tsirkin" <mst@...hat.com>, 
 Xuan Zhuo <xuanzhuo@...ux.alibaba.com>, 
 Shuah Khan <shuah@...nel.org>, 
 linux-doc@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 netdev@...r.kernel.org, 
 kvm@...r.kernel.org, 
 virtualization@...ts.linux-foundation.org, 
 linux-kselftest@...r.kernel.org, 
 Yuri Benditovich <yuri.benditovich@...nix.com>, 
 Andrew Melnychenko <andrew@...nix.com>, 
 Stephen Hemminger <stephen@...workplumber.org>, 
 gur.stavi@...wei.com, 
 devel@...nix.com, 
 Akihiko Odaki <akihiko.odaki@...nix.com>
Subject: Re: [PATCH net v3 6/9] tun: Extract the vnet handling code

Akihiko Odaki wrote:
> The vnet handling code will be reused by tap.
> 
> Signed-off-by: Akihiko Odaki <akihiko.odaki@...nix.com>
> ---
>  MAINTAINERS            |   2 +-
>  drivers/net/Makefile   |   3 +-
>  drivers/net/tun.c      | 174 +-----------------------------------------------
>  drivers/net/tun_vnet.c | 175 +++++++++++++++++++++++++++++++++++++++++++++++++
>  drivers/net/tun_vnet.h |  25 +++++++
>  5 files changed, 205 insertions(+), 174 deletions(-)
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 910305c11e8a..bc32b7e23c79 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -23902,7 +23902,7 @@ W:	http://vtun.sourceforge.net/tun
>  F:	Documentation/networking/tuntap.rst
>  F:	arch/um/os-Linux/drivers/
>  F:	drivers/net/tap.c
> -F:	drivers/net/tun.c
> +F:	drivers/net/tun*
>  
>  TURBOCHANNEL SUBSYSTEM
>  M:	"Maciej W. Rozycki" <macro@...am.me.uk>
> diff --git a/drivers/net/Makefile b/drivers/net/Makefile
> index 13743d0e83b5..bb8eb3053772 100644
> --- a/drivers/net/Makefile
> +++ b/drivers/net/Makefile
> @@ -29,7 +29,8 @@ obj-y += mdio/
>  obj-y += pcs/
>  obj-$(CONFIG_RIONET) += rionet.o
>  obj-$(CONFIG_NET_TEAM) += team/
> -obj-$(CONFIG_TUN) += tun.o
> +obj-$(CONFIG_TUN) += tun-drv.o
> +tun-drv-y := tun.o tun_vnet.o
>  obj-$(CONFIG_TAP) += tap.o
>  obj-$(CONFIG_VETH) += veth.o
>  obj-$(CONFIG_VIRTIO_NET) += virtio_net.o

Let's figure out how to do this. See also comment in 9/9.

Otherwise the rest of the patch looks fine.