net: dsa: b53: fix extracting VID from entry for BCM5325/65

[ Upstream commit 9316012dd01952f75e37035360138ccc786ef727 ]

BCM5325/65's Entry register uses the highest three bits for
VALID/STATIC/AGE, so shifting by 53 only will add these to
b53_arl_entry::vid.

So make sure to mask the vid value as well, to not get invalid VIDs.

Fixes: c45655386e53 ("net: dsa: b53: add support for FDB operations on 5325/5365")
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Tested-by: Álvaro Fernández Rojas <noltari@gmail.com>
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Link: https://patch.msgid.link/20251128080625.27181-3-jonas.gorski@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h
index 458775f9516437f242a7936d7b85094cb634321f..2f44b3b6a0d9fb09967892ef710bf3c27a95a0d2 100644 (file)
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -338,7 +338,7 @@ static inline void b53_arl_to_entry_25(struct b53_arl_entry *ent,
        ent->is_age = !!(mac_vid & ARLTBL_AGE_25);
        ent->is_static = !!(mac_vid & ARLTBL_STATIC_25);
        u64_to_ether_addr(mac_vid, ent->mac);
-       ent->vid = mac_vid >> ARLTBL_VID_S_65;
+       ent->vid = (mac_vid >> ARLTBL_VID_S_65) & ARLTBL_VID_MASK_25;
 }
 
 static inline void b53_arl_from_entry(u64 *mac_vid, u32 *fwd_entry,