netdev - Re: [PATCH 1/1 net-next] net: bridge: add support for host l2 mdb entries

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Message-ID: <66dc205f-9f57-61c1-35d9-8712e8d9fe3a@blackwall.org>
Date:   Thu, 24 Feb 2022 13:26:22 +0200
From:   Nikolay Aleksandrov <razor@...ckwall.org>
To:     Joachim Wiberg <troglobit@...il.com>,
        Roopa Prabhu <roopa@...dia.com>
Cc:     netdev@...r.kernel.org, bridge@...ts.linux-foundation.org,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Subject: Re: [PATCH 1/1 net-next] net: bridge: add support for host l2 mdb
 entries

On 23/02/2022 19:24, Joachim Wiberg wrote:
> This patch expands on the earlier work on layer-2 mdb entries by adding
> support for host entries.  Due to the fact that host joined entries do
> not have any flag field, we infer the permanent flag when reporting the
> entries to userspace, which otherwise would be listed as 'temp'.
> 
> Before patch:
> 
>     ~# bridge mdb add dev br0 port br0 grp 01:00:00:c0:ff:ee permanent
>     Error: bridge: Flags are not allowed for host groups.
>     ~# bridge mdb add dev br0 port br0 grp 01:00:00:c0:ff:ee
>     Error: bridge: Only permanent L2 entries allowed.
> 
> After patch:
> 
>     ~# bridge mdb add dev br0 port br0 grp 01:00:00:c0:ff:ee permanent
>     ~# bridge mdb show
>     dev br0 port br0 grp 01:00:00:c0:ff:ee permanent vid 1
> 
> Signed-off-by: Joachim Wiberg <troglobit@...il.com>
> ---
>  net/bridge/br_mdb.c | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
> 

It would be nice to add a selftest for L2 entries. You can send it as a follow-up.
The patch looks good to me.

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