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Date:   Thu, 23 Mar 2023 09:30:45 -0700
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Subject: Re: [PATCH net-next 1/9] net: vlan: don't adjust MAC header in
 __vlan_insert_inner_tag() unless set
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To:     Vladimir Oltean <vladimir.oltean@nxp.com>, netdev@vger.kernel.org
Cc:     "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>, Andrew Lunn <andrew@lunn.ch>,
        linux-kernel@vger.kernel.org
References: <20230322233823.1806736-1-vladimir.oltean@nxp.com>
 <20230322233823.1806736-2-vladimir.oltean@nxp.com>
From:   Florian Fainelli <f.fainelli@gmail.com>
In-Reply-To: <20230322233823.1806736-2-vladimir.oltean@nxp.com>
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On 3/22/23 16:38, Vladimir Oltean wrote:
> This is a preparatory change for the deletion of skb_reset_mac_header(skb)
> from __dev_queue_xmit(). After that deletion, skb_mac_header(skb) will
> no longer be set in TX paths, from which __vlan_insert_inner_tag() can
> still be called (perhaps indirectly).
> 
> If we don't make this change, then an unset MAC header (equal to ~0U)
> will become set after the adjustment with VLAN_HLEN.
> 
> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
-- 
Florian