linux-kernel - Re: [PATCH net-next] net: bridge: offload BR_HAIRPIN_MODE, BR_ISOLATED, BR_MULTICAST_TO

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Date:   Sun, 10 Apr 2022 20:19:48 +0300
From:   Ido Schimmel <idosch@...sch.org>
To:     Arınç ÜNAL <arinc.unal@...nc9.com>
Cc:     Vladimir Oltean <olteanv@...il.com>,
        Roopa Prabhu <roopa@...dia.com>,
        Nikolay Aleksandrov <razor@...ckwall.org>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        bridge@...ts.linux-foundation.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] net: bridge: offload BR_HAIRPIN_MODE,
 BR_ISOLATED, BR_MULTICAST_TO_UNICAST

On Sun, Apr 10, 2022 at 04:42:27PM +0300, Arınç ÜNAL wrote:
> Add BR_HAIRPIN_MODE, BR_ISOLATED and BR_MULTICAST_TO_UNICAST port flags to
> BR_PORT_FLAGS_HW_OFFLOAD so that switchdev drivers which have an offloaded
> data plane have a chance to reject these bridge port flags if they don't
> support them yet.
> 
> It makes the code path go through the
> SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS driver handlers, which return
> -EINVAL for everything they don't recognize.
> 
> For drivers that don't catch SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS at
> all, switchdev will return -EOPNOTSUPP for those which is then ignored, but
> those are in the minority.
> 
> Signed-off-by: Arınç ÜNAL <arinc.unal@...nc9.com>

Reviewed-by: Ido Schimmel <idosch@...dia.com>

> ---
> Let me know if this is netdev/net material instead.

I prefer net-next