linux-kernel - Re: [PATCH net] net: bridge: switchdev: don't notify FDB entries with "master dynamic"

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Date:   Wed, 12 Apr 2023 20:04:37 +0300
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     Ido Schimmel <idosch@...dia.com>
Cc:     netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        "Hans J. Schultz" <netdev@...io-technology.com>,
        Roopa Prabhu <roopa@...dia.com>,
        Nikolay Aleksandrov <razor@...ckwall.org>,
        Ivan Vecera <ivecera@...hat.com>,
        Jiri Pirko <jiri@...nulli.us>,
        Arkadi Sharshevsky <arkadis@...lanox.com>,
        Ido Schimmel <idosch@...lanox.com>,
        bridge@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net] net: bridge: switchdev: don't notify FDB entries
 with "master dynamic"

On Wed, Apr 12, 2023 at 07:49:17PM +0300, Ido Schimmel wrote:
> On Wed, Apr 12, 2023 at 07:24:07PM +0300, Vladimir Oltean wrote:
> > I'll send v2 with BR_FDB_ADDED_BY_EXT_LEARN not prevented from being
> > notified from switchdev.
> > 
> > Unless you have any objection, I won't send v2 like this:
> > 
> > 	if (test_bit(BR_FDB_ADDED_BY_USER, &fdb->flags) &&
> > 	    !test_bit(BR_FDB_STATIC, &fdb->flags) &&
> > 	    !test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags))
> > 		return;
> > 
> > but like this:
> > 
> > 	/* Entries with just the BR_FDB_ADDED_BY_USER flag set were created
> > 	 * using 'bridge fdb add ... master dynamic'
> > 	 */
> > 	if (fdb->flags == BIT(BR_FDB_ADDED_BY_USER))
> > 		return;
> 
> LGTM. Please copy me on v2 and I will run it through regression. Will
> try to report results before tomorrow's PR.

Sorry, I won't send the v2 early; I need to think more about this and
I don't want to rush things. It's likely that the zero-day bug fix will
miss this week's PR.