diff options
Diffstat (limited to 'target/linux/generic/backport-5.15/769-v5.15-net-dsa-mt7530-always-install-FDB-entries-with-IVL-a.patch')
| -rw-r--r-- | target/linux/generic/backport-5.15/769-v5.15-net-dsa-mt7530-always-install-FDB-entries-with-IVL-a.patch | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.15/769-v5.15-net-dsa-mt7530-always-install-FDB-entries-with-IVL-a.patch b/target/linux/generic/backport-5.15/769-v5.15-net-dsa-mt7530-always-install-FDB-entries-with-IVL-a.patch new file mode 100644 index 0000000000..97824068f0 --- /dev/null +++ b/target/linux/generic/backport-5.15/769-v5.15-net-dsa-mt7530-always-install-FDB-entries-with-IVL-a.patch @@ -0,0 +1,54 @@ +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 |