netdev - Re: [PATCH net-next] virtio-net: synchronize operstate with admin state on up/down

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Date: Tue, 21 May 2024 10:14:29 +0200
From: Paolo Abeni <pabeni@...hat.com>
To: Jason Wang <jasowang@...hat.com>, mst@...hat.com, 
	xuanzhuo@...ux.alibaba.com
Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, 
	virtualization@...ts.linux.dev, netdev@...r.kernel.org, Venkat Venkatsubra
	 <venkat.x.venkatsubra@...cle.com>, Gia-Khanh Nguyen
	 <gia-khanh.nguyen@...cle.com>
Subject: Re: [PATCH net-next] virtio-net: synchronize operstate with admin
 state on up/down

On Mon, 2024-05-20 at 09:03 +0800, Jason Wang wrote:
> This patch synchronize operstate with admin state per RFC2863.
> 
> This is done by trying to toggle the carrier upon open/close and
> synchronize with the config change work. This allows propagate status
> correctly to stacked devices like:
> 
> ip link add link enp0s3 macvlan0 type macvlan
> ip link set link enp0s3 down
> ip link show
> 
> Before this patch:
> 
> 3: enp0s3: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 1000
>     link/ether 00:00:05:00:00:09 brd ff:ff:ff:ff:ff:ff
> ......
> 5: macvlan0@...0s3: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
>     link/ether b2:a9:c5:04:da:53 brd ff:ff:ff:ff:ff:ff
> 
> After this patch:
> 
> 3: enp0s3: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 1000
>     link/ether 00:00:05:00:00:09 brd ff:ff:ff:ff:ff:ff
> ...
> 5: macvlan0@...0s3: <NO-CARRIER,BROADCAST,MULTICAST,UP,M-DOWN> mtu 1500 qdisc noqueue state LOWERLAYERDOWN mode DEFAULT group default qlen 1000
>     link/ether b2:a9:c5:04:da:53 brd ff:ff:ff:ff:ff:ff
> 
> Cc: Venkat Venkatsubra <venkat.x.venkatsubra@...cle.com>
> Cc: Gia-Khanh Nguyen <gia-khanh.nguyen@...cle.com>
> Signed-off-by: Jason Wang <jasowang@...hat.com>

## Form letter - net-next-closed

The merge window for v6.10 has begun and we have already posted our
pull
request. Therefore net-next is closed for new drivers, features, code
refactoring and optimizations. We are currently accepting bug fixes
only.

Please repost when net-next reopens after May 26th.

RFC patches sent for review only are obviously welcome at any time.

See:
https://www.kernel.org/doc/html/next/process/maintainer-netdev.html#development-cycle
-- 
pw-bot: defer