From: Vladimir Oltean <vladimir.olt...@nxp.com>
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 <vladimir.olt...@nxp.com>
---
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)
--
2.25.1
