From:   "Hans J. Schultz" <netdev@kapio-technology.com>
To:     davem@davemloft.net, kuba@kernel.org
Cc:     netdev@vger.kernel.org,
        "Hans J. Schultz" <netdev@kapio-technology.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Andrew Lunn <andrew@lunn.ch>,
        Vladimir Oltean <olteanv@gmail.com>,
        Eric Dumazet <edumazet@google.com>,
        Paolo Abeni <pabeni@redhat.com>,
        Kurt Kanzenbach <kurt@linutronix.de>,
        Hauke Mehrtens <hauke@hauke-m.de>,
        Woojung Huh <woojung.huh@microchip.com>,
        UNGLinuxDriver@microchip.com (maintainer:MICROCHIP KSZ SERIES ETHERNET
        SWITCH DRIVER), Sean Wang <sean.wang@mediatek.com>,
        Landen Chao <Landen.Chao@mediatek.com>,
        DENG Qingfang <dqfext@gmail.com>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Claudiu Manoil <claudiu.manoil@nxp.com>,
        Alexandre Belloni <alexandre.belloni@bootlin.com>,
        =?UTF-8?q?Cl=C3=A9ment=20L=C3=A9ger?= <clement.leger@bootlin.com>,
        Jiri Pirko <jiri@resnulli.us>,
        Ivan Vecera <ivecera@redhat.com>,
        Roopa Prabhu <roopa@nvidia.com>,
        Nikolay Aleksandrov <razor@blackwall.org>,
        Russell King <linux@armlinux.org.uk>,
        Christian Marangi <ansuelsmth@gmail.com>,
        linux-kernel@vger.kernel.org (open list),
        linux-arm-kernel@lists.infradead.org (moderated list:ARM/Mediatek SoC
        support),
        linux-mediatek@lists.infradead.org (moderated list:ARM/Mediatek SoC
        support),
        linux-renesas-soc@vger.kernel.org (open list:RENESAS RZ/N1 A5PSW SWITCH
        DRIVER),
        bridge@lists.linux-foundation.org (moderated list:ETHERNET BRIDGE)
Subject: [PATCH net-next 4/5] net: bridge: ensure FDB offloaded flag is handled as needed
Date:   Mon, 30 Jan 2023 18:34:28 +0100
Message-Id: <20230130173429.3577450-5-netdev@kapio-technology.com>
In-Reply-To: <20230130173429.3577450-1-netdev@kapio-technology.com>
References: <20230130173429.3577450-1-netdev@kapio-technology.com>
MIME-Version: 1.0
Organization: Westermo Network Technologies AB
Content-Transfer-Encoding: 8bit
Precedence: bulk

Since user added entries in the bridge FDB will get the BR_FDB_OFFLOADED
flag set, we do not want the bridge to age those entries and we want the
entries to be deleted in the bridge upon an SWITCHDEV_FDB_DEL_TO_BRIDGE
event.

Signed-off-by: Hans J. Schultz <netdev@kapio-technology.com>
---
 net/bridge/br_fdb.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index e69a872bfc1d..b0c23a72bc76 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -537,6 +537,7 @@ void br_fdb_cleanup(struct work_struct *work)
 		unsigned long this_timer = f->updated + delay;
 
 		if (test_bit(BR_FDB_STATIC, &f->flags) ||
+		    test_bit(BR_FDB_OFFLOADED, &f->flags) ||
 		    test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &f->flags)) {
 			if (test_bit(BR_FDB_NOTIFY, &f->flags)) {
 				if (time_after(this_timer, now))
@@ -1465,7 +1466,9 @@ int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
 	spin_lock_bh(&br->hash_lock);
 
 	fdb = br_fdb_find(br, addr, vid);
-	if (fdb && test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags))
+	if (fdb &&
+	    (test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags) ||
+	     test_bit(BR_FDB_OFFLOADED, &fdb->flags)))
 		fdb_delete(br, fdb, swdev_notify);
 	else
 		err = -ENOENT;
-- 
2.34.1