From 64a81b24487f0d2fba0f033029eec2abc7d82cee Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Mon, 21 Jun 2021 15:10:55 -0700 Subject: [PATCH] net: dsa: b53: Create default VLAN entry explicitly In case CONFIG_VLAN_8021Q is not set, there will be no call down to the b53 driver to ensure that the default PVID VLAN entry will be configured with the appropriate untagged attribute towards the CPU port. We were implicitly relying on dsa_slave_vlan_rx_add_vid() to do that for us, instead make it explicit. Reported-by: Vladimir Oltean Signed-off-by: Florian Fainelli Reviewed-by: Vladimir Oltean Signed-off-by: David S. Miller --- drivers/net/dsa/b53/b53_common.c | 27 +++++++++++++++++++-------- 1 file changed, 19 insertions(+), 8 deletions(-) --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -693,6 +693,13 @@ static u16 b53_default_pvid(struct b53_d return 0; } +static bool b53_vlan_port_needs_forced_tagged(struct dsa_switch *ds, int port) +{ + struct b53_device *dev = ds->priv; + + return dev->tag_protocol == DSA_TAG_PROTO_NONE && dsa_is_cpu_port(ds, port); +} + int b53_configure_vlan(struct dsa_switch *ds) { struct b53_device *dev = ds->priv; @@ -713,9 +720,20 @@ int b53_configure_vlan(struct dsa_switch b53_enable_vlan(dev, -1, dev->vlan_enabled, ds->vlan_filtering); - b53_for_each_port(dev, i) + /* Create an untagged VLAN entry for the default PVID in case + * CONFIG_VLAN_8021Q is disabled and there are no calls to + * dsa_slave_vlan_rx_add_vid() to create the default VLAN + * entry. Do this only when the tagging protocol is not + * DSA_TAG_PROTO_NONE + */ + b53_for_each_port(dev, i) { + v = &dev->vlans[def_vid]; + v->members |= BIT(i); + if (!b53_vlan_port_needs_forced_tagged(ds, i)) + v->untag = v->members; b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(i), def_vid); + } /* Upon initial call we have not set-up any VLANs, but upon * system resume, we need to restore all VLAN entries. @@ -1429,13 +1447,6 @@ int b53_vlan_prepare(struct dsa_switch * } EXPORT_SYMBOL(b53_vlan_prepare); -static bool b53_vlan_port_needs_forced_tagged(struct dsa_switch *ds, int port) -{ - struct b53_device *dev = ds->priv; - - return dev->tag_protocol == DSA_TAG_PROTO_NONE && dsa_is_cpu_port(ds, port); -} - void b53_vlan_add(struct dsa_switch *ds, int port, const struct switchdev_obj_port_vlan *vlan) {