5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jonas Gorski jonas.gorski@gmail.com
[ Upstream commit f480851981043d9bb6447ca9883ade9247b9a0ad ]
Currently the PVID of ports are only set when adding/updating VLANs with PVID set or removing VLANs, but not when clearing the PVID flag of a VLAN.
E.g. the following flow
$ ip link add br0 type bridge vlan_filtering 1 $ ip link set sw1p1 master bridge $ bridge vlan add dev sw1p1 vid 10 pvid untagged $ bridge vlan add dev sw1p1 vid 10 untagged
Would keep the PVID set as 10, despite the flag being cleared. Fix this by checking if we need to unset the PVID on vlan updates.
Fixes: a2482d2ce349 ("net: dsa: b53: Plug in VLAN support") Signed-off-by: Jonas Gorski jonas.gorski@gmail.com Tested-by: Florian Fainelli florian.fainelli@broadcom.com Reviewed-by: Florian Fainelli florian.fainelli@broadcom.com Link: https://patch.msgid.link/20250429201710.330937-4-jonas.gorski@gmail.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/dsa/b53/b53_common.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c index 08f9929132e47..83296ca02098c 100644 --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -1502,12 +1502,21 @@ int b53_vlan_add(struct dsa_switch *ds, int port, bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED; bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID; struct b53_vlan *vl; + u16 old_pvid, new_pvid; int err;
err = b53_vlan_prepare(ds, port, vlan); if (err) return err;
+ b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), &old_pvid); + if (pvid) + new_pvid = vlan->vid; + else if (!pvid && vlan->vid == old_pvid) + new_pvid = b53_default_pvid(dev); + else + new_pvid = old_pvid; + vl = &dev->vlans[vlan->vid];
b53_get_vlan_entry(dev, vlan->vid, vl); @@ -1524,9 +1533,9 @@ int b53_vlan_add(struct dsa_switch *ds, int port, b53_set_vlan_entry(dev, vlan->vid, vl); b53_fast_age_vlan(dev, vlan->vid);
- if (pvid && !dsa_is_cpu_port(ds, port)) { + if (!dsa_is_cpu_port(ds, port) && new_pvid != old_pvid) { b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(port), - vlan->vid); + new_pvid); b53_fast_age_vlan(dev, vlan->vid); }