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From 138c126a33f7564edb66b1da5b847e4a60740bfc Mon Sep 17 00:00:00 2001
From: DENG Qingfang <dqfext@gmail.com>
Date: Wed, 4 Aug 2021 00:04:04 +0800
Subject: [PATCH] net: dsa: mt7530: always install FDB entries with IVL and FID
1
This reverts commit 7e777021780e ("mt7530 mt7530_fdb_write only set ivl
bit vid larger than 1").
Before this series, the default value of all ports' PVID is 1, which is
copied into the FDB entry, even if the ports are VLAN unaware. So
`bridge fdb show` will show entries like `dev swp0 vlan 1 self` even on
a VLAN-unaware bridge.
The blamed commit does not solve that issue completely, instead it may
cause a new issue that FDB is inaccessible in a VLAN-aware bridge with
PVID 1.
This series sets PVID to 0 on VLAN-unaware ports, so `bridge fdb show`
will no longer print `vlan 1` on VLAN-unaware bridges, and that special
case in fdb_write is not required anymore.
Set FDB entries' filter ID to 1 to match the VLAN table.
Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/dsa/mt7530.c | 2 ++
drivers/net/dsa/mt7530.h | 2 ++
2 files changed, 4 insertions(+)
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -361,6 +361,8 @@ mt7530_fdb_write(struct mt7530_priv *pri
int i;
reg[1] |= vid & CVID_MASK;
+ reg[1] |= ATA2_IVL;
+ reg[1] |= ATA2_FID(FID_BRIDGED);
reg[2] |= (aging & AGE_TIMER_MASK) << AGE_TIMER;
reg[2] |= (port_mask & PORT_MAP_MASK) << PORT_MAP;
/* STATIC_ENT indicate that entry is static wouldn't
--- a/drivers/net/dsa/mt7530.h
+++ b/drivers/net/dsa/mt7530.h
@@ -77,6 +77,8 @@ enum mt753x_bpdu_port_fw {
#define STATIC_EMP 0
#define STATIC_ENT 3
#define MT7530_ATA2 0x78
+#define ATA2_IVL BIT(15)
+#define ATA2_FID(x) (((x) & 0x7) << 12)
/* Register for address table write data */
#define MT7530_ATWD 0x7c
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