netdev - [PATCH net-next 3/6] net: dsa: Delete the VID from the upstream port as well

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Date:   Tue, 20 Aug 2019 02:59:59 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     f.fainelli@...il.com, vivien.didelot@...il.com, andrew@...n.ch,
        idosch@...sch.org, roopa@...ulusnetworks.com,
        nikolay@...ulusnetworks.com, davem@...emloft.net
Cc:     netdev@...r.kernel.org, Vladimir Oltean <olteanv@...il.com>
Subject: [PATCH net-next 3/6] net: dsa: Delete the VID from the upstream port as well

Commit b2f81d304cee ("net: dsa: add CPU and DSA ports as VLAN members")
is littering a lot. After deleting a VLAN added on a DSA port, it still
remains installed in the hardware filter of the upstream port. Fix this.

Signed-off-by: Vladimir Oltean <olteanv@...il.com>
---
 net/dsa/switch.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/net/dsa/switch.c b/net/dsa/switch.c
index 09d9286b27cc..84ab2336131e 100644
--- a/net/dsa/switch.c
+++ b/net/dsa/switch.c
@@ -295,11 +295,20 @@ static int dsa_switch_vlan_del(struct dsa_switch *ds,
 			       struct dsa_notifier_vlan_info *info)
 {
 	const struct switchdev_obj_port_vlan *vlan = info->vlan;
+	int port;
 
 	if (!ds->ops->port_vlan_del)
 		return -EOPNOTSUPP;
 
+	/* Build a mask of VLAN members */
+	bitmap_zero(ds->bitmap, ds->num_ports);
 	if (ds->index == info->sw_index)
+		set_bit(info->port, ds->bitmap);
+	for (port = 0; port < ds->num_ports; port++)
+		if (dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))
+			set_bit(port, ds->bitmap);
+
+	for_each_set_bit(port, ds->bitmap, ds->num_ports)
 		return ds->ops->port_vlan_del(ds, info->port, vlan);
 
 	return 0;
-- 
2.17.1