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[5.12.227.87]) by smtp.gmail.com with ESMTPSA id c18sm87763edu.20.2021.02.02.15.31.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 02 Feb 2021 15:31:15 -0800 (PST) From: Vladimir Oltean To: "David S . Miller" , Jakub Kicinski , netdev@vger.kernel.org Cc: Andrew Lunn , Florian Fainelli , Vivien Didelot , Tobias Waldekranz Subject: [PATCH net-next] net: dsa: fix SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING getting ignored Date: Wed, 3 Feb 2021 01:31:09 +0200 Message-Id: <20210202233109.1591466-1-olteanv@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Vladimir Oltean The bridge emits VLAN filtering events and quite a few others via switchdev with orig_dev = br->dev. After the blamed commit, these events started getting ignored. The point of the patch was to not offload switchdev objects for ports that didn't go through dsa_port_bridge_join, because the configuration is unsupported: - ports that offload a bonding/team interface go through dsa_port_bridge_join when that bonding/team interface is later bridged with another switch port or LAG - ports that don't offload LAG don't get notified of the bridge that is on top of that LAG. Sadly, a check is missing, which is that the orig_dev is equal to the bridge device. This check is compatible with the original intention, because ports that don't offload bridging because they use a software LAG don't have dp->bridge_dev set. On a semi-related note, we should not offload switchdev objects or populate dp->bridge_dev if the driver doesn't implement .port_bridge_join either. However there is no regression associated with that, so it can be done separately. Fixes: 5696c8aedfcc ("net: dsa: Don't offload port attributes on standalone ports") Signed-off-by: Vladimir Oltean Reviewed-by: Tobias Waldekranz Tested-by: Tobias Waldekranz --- net/dsa/dsa_priv.h | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h index 2ce46bb87703..1c4ee741b4b8 100644 --- a/net/dsa/dsa_priv.h +++ b/net/dsa/dsa_priv.h @@ -182,7 +182,15 @@ static inline bool dsa_port_offloads_netdev(struct dsa_port *dp, /* Switchdev offloading can be configured on: */ if (dev == dp->slave) - /* DSA ports directly connected to a bridge. */ + /* DSA ports directly connected to a bridge, and event + * was emitted for the ports themselves. + */ + return true; + + if (dp->bridge_dev == dev) + /* DSA ports connected to a bridge, and event was emitted + * for the bridge. + */ return true; if (dp->lag_dev == dev)