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Date:   Thu, 21 Sep 2023 09:29:17 +0200
From:   Johannes Nixdorf <jnixdorf-oss@avm.de>
To:     Nikolay Aleksandrov <razor@blackwall.org>
Cc:     "David S. Miller" <davem@davemloft.net>,
        Andrew Lunn <andrew@lunn.ch>, David Ahern <dsahern@gmail.com>,
        Eric Dumazet <edumazet@google.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Ido Schimmel <idosch@nvidia.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Oleksij Rempel <linux@rempel-privat.de>,
        Paolo Abeni <pabeni@redhat.com>,
        Roopa Prabhu <roopa@nvidia.com>, Shuah Khan <shuah@kernel.org>,
        Vladimir Oltean <vladimir.oltean@nxp.com>,
        bridge@lists.linux-foundation.org, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org
Subject: Re: [PATCH net-next v4 4/6] net: bridge: Add netlink knobs for
 number / max learned FDB entries
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References: <20230919-fdb_limit-v4-0-39f0293807b8@avm.de>
 <20230919-fdb_limit-v4-4-39f0293807b8@avm.de>
 <f5aca33e-693f-9d8d-c45a-41ada00a9f03@blackwall.org>
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On Wed, Sep 20, 2023 at 01:50:32PM +0300, Nikolay Aleksandrov wrote:
> On 9/19/23 11:12, Johannes Nixdorf wrote:
> > [...]
> > diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
> > index 505683ef9a26..f5d49a05e61b 100644
> > --- a/net/bridge/br_netlink.c
> > +++ b/net/bridge/br_netlink.c
> > @@ -1267,6 +1267,8 @@ static const struct nla_policy br_policy[IFLA_BR_MAX + 1] = {
> >   	[IFLA_BR_VLAN_STATS_PER_PORT] = { .type = NLA_U8 },
> >   	[IFLA_BR_MULTI_BOOLOPT] =
> >   		NLA_POLICY_EXACT_LEN(sizeof(struct br_boolopt_multi)),
> > +	[IFLA_BR_FDB_N_LEARNED] = { .type = NLA_U32 },
> 
> hmm? I thought this one was RO.

You are right. I set this to NLA_REJECT locally for v5 now, analogously
to how IFLA_BRPORT_MCAST_N_GROUPS is specified.

> > [...]