target/linux/generic/backport-5.10/765-v5.15-net-dsa-mt7530-disable-learning-on-standalone-ports.patch

   1 From ba2203f36b981235556504fb7b62baee28512a40 Mon Sep 17 00:00:00 2001
   2 From: DENG Qingfang <dqfext@gmail.com>
   3 Date: Tue, 24 Aug 2021 11:37:50 +0800
   4 Subject: [PATCH] net: dsa: mt7530: disable learning on standalone ports
   5
   6 This is a partial backport of commit 5a30833b9a16f8d1aa15de06636f9317ca51f9df
   7 ("net: dsa: mt7530: support MDB and bridge flag operations") upstream.
   8
   9 Make sure that the standalone ports start up with learning disabled.
  10
  11 Signed-off-by: DENG Qingfang <dqfext@gmail.com>
  12 ---
  13  drivers/net/dsa/mt7530.c | 16 ++++++++++++++--
  14  1 file changed, 14 insertions(+), 2 deletions(-)
  15
  16 --- a/drivers/net/dsa/mt7530.c
  17 +++ b/drivers/net/dsa/mt7530.c
  18 @@ -1163,6 +1163,8 @@ mt7530_port_bridge_join(struct dsa_switc
  19                            PCR_MATRIX_MASK, PCR_MATRIX(port_bitmap));
  20         priv->ports[port].pm |= PCR_MATRIX(port_bitmap);
  21
  22 +       mt7530_clear(priv, MT7530_PSC_P(port), SA_DIS);
  23 +
  24         mutex_unlock(&priv->reg_mutex);
  25
  26         return 0;
  27 @@ -1260,6 +1262,8 @@ mt7530_port_bridge_leave(struct dsa_swit
  28                            PCR_MATRIX(BIT(MT7530_CPU_PORT)));
  29         priv->ports[port].pm = PCR_MATRIX(BIT(MT7530_CPU_PORT));
  30
  31 +       mt7530_set(priv, MT7530_PSC_P(port), SA_DIS);
  32 +
  33         mutex_unlock(&priv->reg_mutex);
  34  }
  35
  36 @@ -1817,9 +1821,13 @@ mt7530_setup(struct dsa_switch *ds)
  37                         ret = mt753x_cpu_port_enable(ds, i);
  38                         if (ret)
  39                                 return ret;
  40 -               } else
  41 +               } else {
  42                         mt7530_port_disable(ds, i);
  43
  44 +                       /* Disable learning by default on all user ports */
  45 +                       mt7530_set(priv, MT7530_PSC_P(i), SA_DIS);
  46 +               }
  47 +
  48                 /* Enable consistent egress tag */
  49                 mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK,
  50                            PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
  51 @@ -1979,9 +1987,13 @@ mt7531_setup(struct dsa_switch *ds)
  52                         ret = mt753x_cpu_port_enable(ds, i);
  53                         if (ret)
  54                                 return ret;
  55 -               } else
  56 +               } else {
  57                         mt7530_port_disable(ds, i);
  58
  59 +                       /* Disable learning by default on all user ports */
  60 +                       mt7530_set(priv, MT7530_PSC_P(i), SA_DIS);
  61 +               }
  62 +
  63                 /* Enable consistent egress tag */
  64                 mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK,
  65                            PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));