target/linux/generic/pending-6.1/712-net-dsa-qca8k-enable-assisted-learning-on-CPU-port.patch

   1 From 0f6599167c126ce32c85d4f8a1f3d1775a268572 Mon Sep 17 00:00:00 2001
   2 From: Christian Marangi <ansuelsmth@gmail.com>
   3 Date: Fri, 6 Oct 2023 12:44:00 +0200
   4 Subject: [PATCH] net: dsa: qca8k: enable assisted learning on CPU port
   5
   6 Enable assisted learning on CPU port.
   7
   8 It has been verified that there is a problem in packet roaming
   9 from one BSS to another in the same security settings from one
  10 physical R7800 to another physical R7800 where they are in the
  11 same L2 broadcast domain backhauled/linked together via one
  12 of the ethernet ports.
  13 DHCP will fail to complete and traffic cannot flow for around 300
  14 seconds.
  15
  16 Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
  17 ---
  18  drivers/net/dsa/qca/qca8k-8xxx.c | 14 +++++++++-----
  19  1 file changed, 9 insertions(+), 5 deletions(-)
  20
  21 --- a/drivers/net/dsa/qca/qca8k-8xxx.c
  22 +++ b/drivers/net/dsa/qca/qca8k-8xxx.c
  23 @@ -2013,6 +2013,12 @@ qca8k_setup(struct dsa_switch *ds)
  24                         dev_err(priv->dev, "failed enabling QCA header mode on port %d", dp->index);
  25                         return ret;
  26                 }
  27 +
  28 +               /* Disable learning by default on all ports */
  29 +               ret = regmap_clear_bits(priv->regmap, QCA8K_PORT_LOOKUP_CTRL(dp->index),
  30 +                                                               QCA8K_PORT_LOOKUP_LEARN);
  31 +               if (ret)
  32 +                       return ret;
  33         }
  34
  35         /* Forward all unknown frames to CPU port for Linux processing */
  36 @@ -2042,11 +2048,6 @@ qca8k_setup(struct dsa_switch *ds)
  37                 if (ret)
  38                         return ret;
  39
  40 -               ret = regmap_clear_bits(priv->regmap, QCA8K_PORT_LOOKUP_CTRL(port),
  41 -                                       QCA8K_PORT_LOOKUP_LEARN);
  42 -               if (ret)
  43 -                       return ret;
  44 -
  45                 /* For port based vlans to work we need to set the
  46                  * default egress vid
  47                  */
  48 @@ -2098,6 +2099,9 @@ qca8k_setup(struct dsa_switch *ds)
  49         /* Set max number of LAGs supported */
  50         ds->num_lag_ids = QCA8K_NUM_LAGS;
  51
  52 +       /* HW learn on CPU port is limited and require manual setting */
  53 +       ds->assisted_learning_on_cpu_port = true;
  54 +
  55         return 0;
  56  }
  57