X-Git-Url: http://git.openwrt.org/?a=blobdiff_plain;f=target%2Flinux%2Fgeneric%2Fbackport-6.1%2F790-50-v6.10-net-dsa-mt7530-fix-mirroring-frames-received-on-loca.patch;fp=target%2Flinux%2Fgeneric%2Fbackport-6.1%2F790-50-v6.10-net-dsa-mt7530-fix-mirroring-frames-received-on-loca.patch;h=7640a9cb410eaf199eef0d23246c08d456505477;hb=ac8bfe316b816e9b40e58da55e44197f5b395dd2;hp=0000000000000000000000000000000000000000;hpb=70853560f83af2786ed1884e5db8e4214d58e8cf;p=openwrt%2Fopenwrt.git

diff --git a/target/linux/generic/backport-6.1/790-50-v6.10-net-dsa-mt7530-fix-mirroring-frames-received-on-loca.patch b/target/linux/generic/backport-6.1/790-50-v6.10-net-dsa-mt7530-fix-mirroring-frames-received-on-loca.patch
new file mode 100644
index 0000000000..7640a9cb41
--- /dev/null
+++ b/target/linux/generic/backport-6.1/790-50-v6.10-net-dsa-mt7530-fix-mirroring-frames-received-on-loca.patch
@@ -0,0 +1,70 @@
+From d4097ddef078a113643a6dcde01e99741f852adb Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= <arinc.unal@arinc9.com>
+Date: Sat, 13 Apr 2024 16:01:39 +0300
+Subject: [PATCH 2/5] net: dsa: mt7530: fix mirroring frames received on local
+ port
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This switch intellectual property provides a bit on the ARL global control
+register which controls allowing mirroring frames which are received on the
+local port (monitor port). This bit is unset after reset.
+
+This ability must be enabled to fully support the port mirroring feature on
+this switch intellectual property.
+
+Therefore, this patch fixes the traffic not being reflected on a port,
+which would be configured like below:
+
+  tc qdisc add dev swp0 clsact
+
+  tc filter add dev swp0 ingress matchall skip_sw \
+  action mirred egress mirror dev swp0
+
+As a side note, this configuration provides the hairpinning feature for a
+single port.
+
+Fixes: 37feab6076aa ("net: dsa: mt7530: add support for port mirroring")
+Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/dsa/mt7530.c | 6 ++++++
+ drivers/net/dsa/mt7530.h | 4 ++++
+ 2 files changed, 10 insertions(+)
+
+--- a/drivers/net/dsa/mt7530.c
++++ b/drivers/net/dsa/mt7530.c
+@@ -2471,6 +2471,9 @@ mt7530_setup(struct dsa_switch *ds)
+ 			   PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
+ 	}
+ 
++	/* Allow mirroring frames received on the local port (monitor port). */
++	mt7530_set(priv, MT753X_AGC, LOCAL_EN);
++
+ 	/* Setup VLAN ID 0 for VLAN-unaware bridges */
+ 	ret = mt7530_setup_vlan0(priv);
+ 	if (ret)
+@@ -2582,6 +2585,9 @@ mt7531_setup_common(struct dsa_switch *d
+ 			   PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
+ 	}
+ 
++	/* Allow mirroring frames received on the local port (monitor port). */
++	mt7530_set(priv, MT753X_AGC, LOCAL_EN);
++
+ 	/* Flush the FDB table */
+ 	ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL);
+ 	if (ret < 0)
+--- a/drivers/net/dsa/mt7530.h
++++ b/drivers/net/dsa/mt7530.h
+@@ -32,6 +32,10 @@ enum mt753x_id {
+ #define SYSC_REG_RSTCTRL		0x34
+ #define  RESET_MCM			BIT(2)
+ 
++/* Register for ARL global control */
++#define MT753X_AGC			0xc
++#define  LOCAL_EN			BIT(7)
++
+ /* Registers to mac forward control for unknown frames */
+ #define MT7530_MFC			0x10
+ #define  BC_FFP(x)			(((x) & 0xff) << 24)