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authorChristian Marangi <ansuelsmth@gmail.com>2023-07-24 05:25:31 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2023-08-03 10:24:15 +0200
commitaedec6019d7ce7e8dfbd1559aa82ce7b0ea22336 (patch)
treee8bbbe348aaf173de8d11759d7ac2cab4018719a
parent828f9526f0611c589c404826d9d96fe4d7e8ebfe (diff)
downloadlinux-aedec6019d7ce7e8dfbd1559aa82ce7b0ea22336.tar.gz
net: dsa: qca8k: fix mdb add/del case with 0 VID
commit dfd739f182b00b02bd7470ed94d112684cc04fa2 upstream.

The qca8k switch doesn't support using 0 as VID and require a default
VID to be always set. MDB add/del function doesn't currently handle
this and are currently setting the default VID.

Fix this by correctly handling this corner case and internally use the
default VID for VID 0 case.

Fixes: ba8f870dfa63 ("net: dsa: qca8k: add support for mdb_add/del")
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/net/dsa/qca/qca8k-common.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/dsa/qca/qca8k-common.c b/drivers/net/dsa/qca/qca8k-common.c
index a5c09f06908d..7c3dd71a81bd 100644
--- a/drivers/net/dsa/qca/qca8k-common.c
+++ b/drivers/net/dsa/qca/qca8k-common.c
@@ -853,6 +853,9 @@ int qca8k_port_mdb_add(struct dsa_switch *ds, int port,
 	const u8 *addr = mdb->addr;
 	u16 vid = mdb->vid;
 
+	if (!vid)
+		vid = QCA8K_PORT_VID_DEF;
+
 	return qca8k_fdb_search_and_insert(priv, BIT(port), addr, vid,
 					   QCA8K_ATU_STATUS_STATIC);
 }
@@ -865,6 +868,9 @@ int qca8k_port_mdb_del(struct dsa_switch *ds, int port,
 	const u8 *addr = mdb->addr;
 	u16 vid = mdb->vid;
 
+	if (!vid)
+		vid = QCA8K_PORT_VID_DEF;
+
 	return qca8k_fdb_search_and_del(priv, BIT(port), addr, vid);
 }