target/linux/generic/backport-5.4/781-v5.18-1-net-dsa-Move-VLAN-filtering-syncing-out-of-dsa_switc.patch

   1 From dee0f71c39afdaa30af7b94af420ca1d5c0f0349 Mon Sep 17 00:00:00 2001
   2 From: Tobias Waldekranz <tobias@waldekranz.com>
   3 Date: Mon, 24 Jan 2022 22:09:43 +0100
   4 Subject: [PATCH 5.4 1/2] net: dsa: Move VLAN filtering syncing out of
   5  dsa_switch_bridge_leave
   6 MIME-Version: 1.0
   7 Content-Type: text/plain; charset=UTF-8
   8 Content-Transfer-Encoding: 8bit
   9
  10 commit 381a730182f1d174e1950cd4e63e885b1c302051 upstream.
  11
  12 Most of dsa_switch_bridge_leave was, in fact, dealing with the syncing
  13 of VLAN filtering for switches on which that is a global
  14 setting. Separate the two phases to prepare for the cross-chip related
  15 bugfix in the following commit.
  16
  17 Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
  18 Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
  19 Signed-off-by: David S. Miller <davem@davemloft.net>
  20 Signed-off-by: Marek Behún <kabel@kernel.org>
  21 ---
  22  net/dsa/switch.c | 31 ++++++++++++++++++++++---------
  23  1 file changed, 22 insertions(+), 9 deletions(-)
  24
  25 --- a/net/dsa/switch.c
  26 +++ b/net/dsa/switch.c
  27 @@ -65,19 +65,12 @@ static int dsa_switch_bridge_join(struct
  28         return 0;
  29  }
  30
  31 -static int dsa_switch_bridge_leave(struct dsa_switch *ds,
  32 -                                  struct dsa_notifier_bridge_info *info)
  33 +static int dsa_switch_sync_vlan_filtering(struct dsa_switch *ds,
  34 +                                         struct dsa_notifier_bridge_info *info)
  35  {
  36         bool unset_vlan_filtering = br_vlan_enabled(info->br);
  37         int err, i;
  38
  39 -       if (ds->index == info->sw_index && ds->ops->port_bridge_leave)
  40 -               ds->ops->port_bridge_leave(ds, info->port, info->br);
  41 -
  42 -       if (ds->index != info->sw_index && ds->ops->crosschip_bridge_leave)
  43 -               ds->ops->crosschip_bridge_leave(ds, info->sw_index, info->port,
  44 -                                               info->br);
  45 -
  46         /* If the bridge was vlan_filtering, the bridge core doesn't trigger an
  47          * event for changing vlan_filtering setting upon slave ports leaving
  48          * it. That is a good thing, because that lets us handle it and also
  49 @@ -103,6 +96,26 @@ static int dsa_switch_bridge_leave(struc
  50                 if (err && err != EOPNOTSUPP)
  51                         return err;
  52         }
  53 +
  54 +       return 0;
  55 +}
  56 +
  57 +static int dsa_switch_bridge_leave(struct dsa_switch *ds,
  58 +                                  struct dsa_notifier_bridge_info *info)
  59 +{
  60 +       int err;
  61 +
  62 +       if (ds->index == info->sw_index && ds->ops->port_bridge_leave)
  63 +               ds->ops->port_bridge_leave(ds, info->port, info->br);
  64 +
  65 +       if (ds->index != info->sw_index && ds->ops->crosschip_bridge_leave)
  66 +               ds->ops->crosschip_bridge_leave(ds, info->sw_index, info->port,
  67 +                                               info->br);
  68 +
  69 +       err = dsa_switch_sync_vlan_filtering(ds, info);
  70 +       if (err)
  71 +               return err;
  72 +
  73         return 0;
  74  }
  75