Thread (2 messages) 2 messages, 2 authors, 2022-03-15
STALE1585d

[PATCH net-next] net: dsa: Never offload FDB entries on standalone ports

From: Tobias Waldekranz <tobias@waldekranz.com>
Date: 2022-03-15 22:56:01
Also in: lkml
Subsystem: networking [dsa], networking [general], the rest · Maintainers: Andrew Lunn, Vladimir Oltean, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds

If a port joins a bridge that it can't offload, it will fallback to
standalone mode and software bridging. In this case, we never want to
offload any FDB entries to hardware either.

Fixes: c26933639b54 ("net: dsa: request drivers to perform FDB isolation")
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
---
 net/dsa/slave.c | 3 +++
 1 file changed, 3 insertions(+)
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index f9cecda791d5..d24b6bf845c1 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -2847,6 +2847,9 @@ static int dsa_slave_fdb_event(struct net_device *dev,
 	if (ctx && ctx != dp)
 		return 0;
 
+	if (!dp->bridge)
+		return 0;
+
 	if (switchdev_fdb_is_dynamically_learned(fdb_info)) {
 		if (dsa_port_offloads_bridge_port(dp, orig_dev))
 			return 0;
-- 
2.25.1
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