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net: dsa: mt7530: Fix traffic flooding for MMIO devices

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[ Upstream commit ccc2f5a436fbb0ae1fb598932a9b8e48423c1959 ]

On MMIO devices (e.g. MT7988 or EN7581) unicast traffic received on lanX
port is flooded on all other user ports if the DSA switch is configured
without VLAN support since PORT_MATRIX in PCR regs contains all user
ports. Similar to MDIO devices (e.g. MT7530 and MT7531) fix the issue
defining default VLAN-ID 0 for MT7530 MMIO devices.

Fixes: 110c18bfed ("net: dsa: mt7530: introduce driver for MT7988 built-in switch")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Chester A. Unal <chester.a.unal@arinc9.com>
Link: https://patch.msgid.link/20250304-mt7988-flooding-fix-v1-1-905523ae83e9@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Lorenzo Bianconi
2025-03-04 09:50:23 +01:00
committed by Greg Kroah-Hartman
parent 9cc7f00186
commit 88afbcb450
1 changed files with 2 additions and 6 deletions
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8
drivers/net/dsa/mt7530.c
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@@ -2640,7 +2640,8 @@ mt7531_setup_common(struct dsa_switch *ds)
if (ret < 0)
return ret;
return 0;
/* Setup VLAN ID 0 for VLAN-unaware bridges */
return mt7530_setup_vlan0(priv);
}
static int
@@ -2734,11 +2735,6 @@ mt7531_setup(struct dsa_switch *ds)
mt7531_setup_common(ds);
/* Setup VLAN ID 0 for VLAN-unaware bridges */
ret = mt7530_setup_vlan0(priv);
if (ret)
return ret;
ds->assisted_learning_on_cpu_port = true;
ds->mtu_enforcement_ingress = true;