linux-kernel - Re: [PATCH net-next v4 4/6] net: bridge: Add netlink knobs for number / max learned FDB entries

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Message-ID: <ZQvwzZrqC7pjaeS1@u-jnixdorf.ads.avm.de>
Date:   Thu, 21 Sep 2023 09:29:17 +0200
From:   Johannes Nixdorf <jnixdorf-oss@....de>
To:     Nikolay Aleksandrov <razor@...ckwall.org>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Andrew Lunn <andrew@...n.ch>, David Ahern <dsahern@...il.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Ido Schimmel <idosch@...dia.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Oleksij Rempel <linux@...pel-privat.de>,
        Paolo Abeni <pabeni@...hat.com>,
        Roopa Prabhu <roopa@...dia.com>, Shuah Khan <shuah@...nel.org>,
        Vladimir Oltean <vladimir.oltean@....com>,
        bridge@...ts.linux-foundation.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH net-next v4 4/6] net: bridge: Add netlink knobs for
 number / max learned FDB entries

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.

> > [...]