target/linux/generic/backport-4.9/424-v4.20-net-dsa-fix-88e6060-roaming.patch

   1 From a74515604a7b171f2702bdcbd1e231225fb456d0 Mon Sep 17 00:00:00 2001
   2 From: Anderson Luiz Alves <alacn1@gmail.com>
   3 Date: Fri, 30 Nov 2018 21:58:36 -0200
   4 Subject: [PATCH] mv88e6060: disable hardware level MAC learning
   5
   6 Disable hardware level MAC learning because it breaks station roaming.
   7 When enabled it drops all frames that arrive from a MAC address
   8 that is on a different port at learning table.
   9
  10 Signed-off-by: Anderson Luiz Alves <alacn1@gmail.com>
  11 Reviewed-by: Andrew Lunn <andrew@lunn.ch>
  12 Signed-off-by: David S. Miller <davem@davemloft.net>
  13 ---
  14  drivers/net/dsa/mv88e6060.c | 10 +++-------
  15  1 file changed, 3 insertions(+), 7 deletions(-)
  16
  17 --- a/drivers/net/dsa/mv88e6060.c
  18 +++ b/drivers/net/dsa/mv88e6060.c
  19 @@ -114,8 +114,7 @@ static int mv88e6060_switch_reset(struct
  20         /* Reset the switch. */
  21         REG_WRITE(REG_GLOBAL, GLOBAL_ATU_CONTROL,
  22                   GLOBAL_ATU_CONTROL_SWRESET |
  23 -                 GLOBAL_ATU_CONTROL_ATUSIZE_1024 |
  24 -                 GLOBAL_ATU_CONTROL_ATE_AGE_5MIN);
  25 +                 GLOBAL_ATU_CONTROL_LEARNDIS);
  26
  27         /* Wait up to one second for reset to complete. */
  28         timeout = jiffies + 1 * HZ;
  29 @@ -140,13 +139,10 @@ static int mv88e6060_setup_global(struct
  30          */
  31         REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL, GLOBAL_CONTROL_MAX_FRAME_1536);
  32
  33 -       /* Enable automatic address learning, set the address
  34 -        * database size to 1024 entries, and set the default aging
  35 -        * time to 5 minutes.
  36 +       /* Disable automatic address learning.
  37          */
  38         REG_WRITE(REG_GLOBAL, GLOBAL_ATU_CONTROL,
  39 -                 GLOBAL_ATU_CONTROL_ATUSIZE_1024 |
  40 -                 GLOBAL_ATU_CONTROL_ATE_AGE_5MIN);
  41 +                 GLOBAL_ATU_CONTROL_LEARNDIS);
  42
  43         return 0;
  44  }