linux-kernel - Re: [PATCH net v2] i40e: Fix I40E_FLAG_VF_VLAN

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Message-ID: <14fff2c8-010a-4fc7-b1eb-7af85e3868b5@intel.com>
Date:   Thu, 19 Oct 2023 12:19:42 -0700
From:   Jacob Keller <jacob.e.keller@...el.com>
To:     Ivan Vecera <ivecera@...hat.com>, <netdev@...r.kernel.org>
CC:     Mateusz Palczewski <mateusz.palczewski@...el.com>,
        Simon Horman <horms@...nel.org>,
        Jesse Brandeburg <jesse.brandeburg@...el.com>,
        "Tony Nguyen" <anthony.l.nguyen@...el.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Przemyslaw Patynowski <przemyslawx.patynowski@...el.com>,
        Sylwester Dziedziuch <sylwesterx.dziedziuch@...el.com>,
        "moderated list:INTEL ETHERNET DRIVERS" 
        <intel-wired-lan@...ts.osuosl.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net v2] i40e: Fix I40E_FLAG_VF_VLAN_PRUNING value



On 10/19/2023 9:37 AM, Ivan Vecera wrote:
> Commit c87c938f62d8f1 ("i40e: Add VF VLAN pruning") added new
> PF flag I40E_FLAG_VF_VLAN_PRUNING but its value collides with
> existing I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED flag.
> 
> Move the affected flag at the end of the flags and fix its value.
> 
> Reproducer:
> [root@...-03 ~]# ethtool --set-priv-flags enp2s0f0np0 link-down-on-close on
> [root@...-03 ~]# ethtool --set-priv-flags enp2s0f0np0 vf-vlan-pruning on
> [root@...-03 ~]# ethtool --set-priv-flags enp2s0f0np0 link-down-on-close off
> [ 6323.142585] i40e 0000:02:00.0: Setting link-down-on-close not supported on this port (because total-port-shutdown is enabled)
> netlink error: Operation not supported
> [root@...-03 ~]# ethtool --set-priv-flags enp2s0f0np0 vf-vlan-pruning off
> [root@...-03 ~]# ethtool --set-priv-flags enp2s0f0np0 link-down-on-close off
> 
> The link-down-on-close flag cannot be modified after setting vf-vlan-pruning
> because vf-vlan-pruning shares the same bit with total-port-shutdown flag
> that prevents any modification of link-down-on-close flag.
> 
> Fixes: c87c938f62d8 ("i40e: Add VF VLAN pruning")
> Cc: Mateusz Palczewski <mateusz.palczewski@...el.com>
> Cc: Simon Horman <horms@...nel.org>
> Signed-off-by: Ivan Vecera <ivecera@...hat.com>

Reviewed-by: Jacob Keller <jacob.e.keller@...el.com>