linux-kernel - Re: [PATCH net,v5, 3/3] hv_netvsc: Mark VF as slave before exposing it to user-mode

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Date:   Sun, 19 Nov 2023 08:53:53 -0800
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Haiyang Zhang <haiyangz@...rosoft.com>
Cc:     linux-hyperv@...r.kernel.org, netdev@...r.kernel.org,
        kys@...rosoft.com, wei.liu@...nel.org, decui@...rosoft.com,
        edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
        davem@...emloft.net, linux-kernel@...r.kernel.org,
        Long Li <longli@...rosoft.com>, stable@...r.kernel.org
Subject: Re: [PATCH net,v5, 3/3] hv_netvsc: Mark VF as slave before exposing
 it to user-mode

On Sun, 19 Nov 2023 08:23:43 -0800
Haiyang Zhang <haiyangz@...rosoft.com> wrote:

> From: Long Li <longli@...rosoft.com>
> 
> When a VF is being exposed form the kernel, it should be marked as "slave"
> before exposing to the user-mode. The VF is not usable without netvsc
> running as master. The user-mode should never see a VF without the "slave"
> flag.
> 
> This commit moves the code of setting the slave flag to the time before
> VF is exposed to user-mode.
> 
> Cc: stable@...r.kernel.org
> Fixes: 0c195567a8f6 ("netvsc: transparent VF management")
> Signed-off-by: Long Li <longli@...rosoft.com>
> Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>

Acked-by: Stephen Hemminger <stephen@...workplumber.org>