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Message-ID: <68e92033-1dea-87bd-bc9b-8b2abdaa4a85@blackwall.org>
Date:   Thu, 17 Mar 2022 11:01:06 +0200
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Subject: Re: [PATCH v5 net-next 07/15] net: bridge: mst: Add helper to map an
 MSTI to a VID set
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To:     Tobias Waldekranz <tobias@waldekranz.com>, davem@davemloft.net,
        kuba@kernel.org
Cc:     Andrew Lunn <andrew@lunn.ch>,
        Vivien Didelot <vivien.didelot@gmail.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Vladimir Oltean <olteanv@gmail.com>,
        Jiri Pirko <jiri@resnulli.us>,
        Ivan Vecera <ivecera@redhat.com>,
        Roopa Prabhu <roopa@nvidia.com>,
        Russell King <linux@armlinux.org.uk>,
        Petr Machata <petrm@nvidia.com>,
        Ido Schimmel <idosch@nvidia.com>,
        Matt Johnston <matt@codeconstruct.com.au>,
        Cooper Lees <me@cooperlees.com>, linux-kernel@vger.kernel.org,
        netdev@vger.kernel.org, bridge@lists.linux-foundation.org
References: <20220316150857.2442916-1-tobias@waldekranz.com>
 <20220316150857.2442916-8-tobias@waldekranz.com>
From:   Nikolay Aleksandrov <razor@blackwall.org>
In-Reply-To: <20220316150857.2442916-8-tobias@waldekranz.com>
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On 16/03/2022 17:08, Tobias Waldekranz wrote:
> br_mst_get_info answers the question: "On this bridge, which VIDs are
> mapped to the given MSTI?"
> 
> This is useful in switchdev drivers, which might have to fan-out
> operations, relating to an MSTI, per VLAN.
> 
> An example: When a port's MST state changes from forwarding to
> blocking, a driver may choose to flush the dynamic FDB entries on that
> port to get faster reconvergence of the network, but this should only
> be done in the VLANs that are managed by the MSTI in question.
> 
> Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
> ---
>  include/linux/if_bridge.h |  7 +++++++
>  net/bridge/br_mst.c       | 26 ++++++++++++++++++++++++++
>  2 files changed, 33 insertions(+)
> 

Acked-by: Nikolay Aleksandrov <razor@blackwall.org>