linux-kernel - Re: [PATCH net-next v4] hv_netvsc: Mark VF as slave before exposing it to user-mode

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Message-ID: <20231110120513.45ed505c@kernel.org>
Date:   Fri, 10 Nov 2023 12:05:13 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Long Li <longli@...rosoft.com>
Cc:     "longli@...uxonhyperv.com" <longli@...uxonhyperv.com>,
        KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next v4] hv_netvsc: Mark VF as slave before exposing
 it to user-mode

On Fri, 10 Nov 2023 00:43:55 +0000 Long Li wrote:
> The code above needs to work with and without netvsc (the possible
> master device) present.

I don't think that's a reasonable requirement for the kernel code.

The auto-bonding already puts the kernel into business of guessing
policy, which frankly we shouldn't be in.

Having the kernel guess even harder that there will be a master,
but it's not there yet, is not reasonable.