netdev - [PATCH net] net: dsa: mt7530: sync driver-specific behavior of MT7531 variants

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <89ed7ec6d4fa0395ac53ad2809742bb1ce61ed12.1745290867.git.daniel@makrotopia.org>
Date: Tue, 22 Apr 2025 04:10:20 +0100
From: Daniel Golle <daniel@...rotopia.org>
To: "Chester A. Unal" <chester.a.unal@...nc9.com>,
	Daniel Golle <daniel@...rotopia.org>,
	DENG Qingfang <dqfext@...il.com>, Neal Yen <neal.yen@...iatek.com>,
	Sean Wang <sean.wang@...iatek.com>, Andrew Lunn <andrew@...n.ch>,
	Vladimir Oltean <olteanv@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Subject: [PATCH net] net: dsa: mt7530: sync driver-specific behavior of
 MT7531 variants

MT7531 standalone and MMIO variants found in MT7988 and EN7581 share
most basic properties. Despite that, assisted_learning_on_cpu_port and
mtu_enforcement_ingress were only applied for MT7531 but not for MT7988
or EN7581, causing the expected issues on MMIO devices.

Apply both settings equally also for MT7988 and EN7581 by moving both
assignments form mt7531_setup() to mt7531_setup_common().

This fixes unwanted flooding of packets due to unknown unicast
during DA lookup, as well as issues with heterogenous MTU settings.

Fixes: 7f54cc9772ce ("net: dsa: mt7530: split-off common parts from mt7531_setup")
Signed-off-by: Daniel Golle <daniel@...rotopia.org>
---
See also https://git01.mediatek.com/plugins/gitiles/openwrt/feeds/mtk-openwrt-feeds/+/b4204fb062d60ac57791c90a11d05cf75269dcbd

 drivers/net/dsa/mt7530.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index d70399bce5b9..c5d6628d7980 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -2419,6 +2419,9 @@ mt7531_setup_common(struct dsa_switch *ds)
 	struct mt7530_priv *priv = ds->priv;
 	int ret, i;
 
+	ds->assisted_learning_on_cpu_port = true;
+	ds->mtu_enforcement_ingress = true;
+
 	mt753x_trap_frames(priv);
 
 	/* Enable and reset MIB counters */
@@ -2571,9 +2574,6 @@ mt7531_setup(struct dsa_switch *ds)
 	if (ret)
 		return ret;
 
-	ds->assisted_learning_on_cpu_port = true;
-	ds->mtu_enforcement_ingress = true;
-
 	return 0;
 }
 
-- 
2.49.0