kernel: mv88e6060: disable hardware level MAC learning

[openwrt/staging/jogo.git] / target / linux / generic / backport-4.19 / 424-v4.20-net-dsa-fix-88e6060-roaming.patch

diff --git a/target/linux/generic/backport-4.19/424-v4.20-net-dsa-fix-88e6060-roaming.patch b/target/linux/generic/backport-4.19/424-v4.20-net-dsa-fix-88e6060-roaming.patch
new file mode 100644 (file)
index 0000000..a242623
--- /dev/null
+++ b/target/linux/generic/backport-4.19/424-v4.20-net-dsa-fix-88e6060-roaming.patch
@@ -0,0 +1,44 @@
+From a74515604a7b171f2702bdcbd1e231225fb456d0 Mon Sep 17 00:00:00 2001
+From: Anderson Luiz Alves <alacn1@gmail.com>
+Date: Fri, 30 Nov 2018 21:58:36 -0200
+Subject: [PATCH] mv88e6060: disable hardware level MAC learning
+
+Disable hardware level MAC learning because it breaks station roaming.
+When enabled it drops all frames that arrive from a MAC address
+that is on a different port at learning table.
+
+Signed-off-by: Anderson Luiz Alves <alacn1@gmail.com>
+Reviewed-by: Andrew Lunn <andrew@lunn.ch>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/dsa/mv88e6060.c | 10 +++-------
+ 1 file changed, 3 insertions(+), 7 deletions(-)
+
+--- a/drivers/net/dsa/mv88e6060.c
++++ b/drivers/net/dsa/mv88e6060.c
+@@ -116,8 +116,7 @@ static int mv88e6060_switch_reset(struct
+       /* Reset the switch. */
+       REG_WRITE(REG_GLOBAL, GLOBAL_ATU_CONTROL,
+                 GLOBAL_ATU_CONTROL_SWRESET |
+-                GLOBAL_ATU_CONTROL_ATUSIZE_1024 |
+-                GLOBAL_ATU_CONTROL_ATE_AGE_5MIN);
++                GLOBAL_ATU_CONTROL_LEARNDIS);
+ 
+       /* Wait up to one second for reset to complete. */
+       timeout = jiffies + 1 * HZ;
+@@ -142,13 +141,10 @@ static int mv88e6060_setup_global(struct
+        */
+       REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL, GLOBAL_CONTROL_MAX_FRAME_1536);
+ 
+-      /* Enable automatic address learning, set the address
+-       * database size to 1024 entries, and set the default aging
+-       * time to 5 minutes.
++      /* Disable automatic address learning.
+        */
+       REG_WRITE(REG_GLOBAL, GLOBAL_ATU_CONTROL,
+-                GLOBAL_ATU_CONTROL_ATUSIZE_1024 |
+-                GLOBAL_ATU_CONTROL_ATE_AGE_5MIN);
++                GLOBAL_ATU_CONTROL_LEARNDIS);
+ 
+       return 0;
+ }