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71 lines
2.3 KiB
Diff
71 lines
2.3 KiB
Diff
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From d4097ddef078a113643a6dcde01e99741f852adb Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= <arinc.unal@arinc9.com>
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Date: Sat, 13 Apr 2024 16:01:39 +0300
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Subject: [PATCH 2/5] net: dsa: mt7530: fix mirroring frames received on local
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port
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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This switch intellectual property provides a bit on the ARL global control
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register which controls allowing mirroring frames which are received on the
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local port (monitor port). This bit is unset after reset.
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This ability must be enabled to fully support the port mirroring feature on
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this switch intellectual property.
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Therefore, this patch fixes the traffic not being reflected on a port,
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which would be configured like below:
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tc qdisc add dev swp0 clsact
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tc filter add dev swp0 ingress matchall skip_sw \
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action mirred egress mirror dev swp0
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As a side note, this configuration provides the hairpinning feature for a
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single port.
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Fixes: 37feab6076aa ("net: dsa: mt7530: add support for port mirroring")
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Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/dsa/mt7530.c | 6 ++++++
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drivers/net/dsa/mt7530.h | 4 ++++
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2 files changed, 10 insertions(+)
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--- a/drivers/net/dsa/mt7530.c
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+++ b/drivers/net/dsa/mt7530.c
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@@ -2480,6 +2480,9 @@ mt7530_setup(struct dsa_switch *ds)
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PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
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}
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+ /* Allow mirroring frames received on the local port (monitor port). */
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+ mt7530_set(priv, MT753X_AGC, LOCAL_EN);
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+
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/* Setup VLAN ID 0 for VLAN-unaware bridges */
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ret = mt7530_setup_vlan0(priv);
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if (ret)
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@@ -2591,6 +2594,9 @@ mt7531_setup_common(struct dsa_switch *d
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PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
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}
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+ /* Allow mirroring frames received on the local port (monitor port). */
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+ mt7530_set(priv, MT753X_AGC, LOCAL_EN);
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+
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/* Flush the FDB table */
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ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL);
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if (ret < 0)
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--- a/drivers/net/dsa/mt7530.h
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+++ b/drivers/net/dsa/mt7530.h
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@@ -32,6 +32,10 @@ enum mt753x_id {
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#define SYSC_REG_RSTCTRL 0x34
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#define RESET_MCM BIT(2)
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+/* Register for ARL global control */
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+#define MT753X_AGC 0xc
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+#define LOCAL_EN BIT(7)
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+
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/* Registers to mac forward control for unknown frames */
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#define MT7530_MFC 0x10
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#define BC_FFP(x) (((x) & 0xff) << 24)
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