target/linux/generic/backport-5.10/773-v5.18-1-net-dsa-Move-VLAN-filtering-syncing-out-of-dsa_switc.patch

   1 From 7164a8cde4b42f76474088ccaf53f1e463d4e2f6 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 5.10 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 | 39 ++++++++++++++++++++++++++-------------
  23  1 file changed, 26 insertions(+), 13 deletions(-)
  24
  25 --- a/net/dsa/switch.c
  26 +++ b/net/dsa/switch.c
  27 @@ -104,23 +104,12 @@ 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 -       struct dsa_switch_tree *dst = ds->dst;
  38         int err, i;
  39
  40 -       if (dst->index == info->tree_index && ds->index == info->sw_index &&
  41 -           ds->ops->port_bridge_leave)
  42 -               ds->ops->port_bridge_leave(ds, info->port, info->br);
  43 -
  44 -       if ((dst->index != info->tree_index || ds->index != info->sw_index) &&
  45 -           ds->ops->crosschip_bridge_leave)
  46 -               ds->ops->crosschip_bridge_leave(ds, info->tree_index,
  47 -                                               info->sw_index, info->port,
  48 -                                               info->br);
  49 -
  50         /* If the bridge was vlan_filtering, the bridge core doesn't trigger an
  51          * event for changing vlan_filtering setting upon slave ports leaving
  52          * it. That is a good thing, because that lets us handle it and also
  53 @@ -153,6 +142,30 @@ static int dsa_switch_bridge_leave(struc
  54                 if (err && err != EOPNOTSUPP)
  55                         return err;
  56         }
  57 +
  58 +       return 0;
  59 +}
  60 +
  61 +static int dsa_switch_bridge_leave(struct dsa_switch *ds,
  62 +                                  struct dsa_notifier_bridge_info *info)
  63 +{
  64 +       struct dsa_switch_tree *dst = ds->dst;
  65 +       int err;
  66 +
  67 +       if (dst->index == info->tree_index && ds->index == info->sw_index &&
  68 +           ds->ops->port_bridge_leave)
  69 +               ds->ops->port_bridge_leave(ds, info->port, info->br);
  70 +
  71 +       if ((dst->index != info->tree_index || ds->index != info->sw_index) &&
  72 +           ds->ops->crosschip_bridge_leave)
  73 +               ds->ops->crosschip_bridge_leave(ds, info->tree_index,
  74 +                                               info->sw_index, info->port,
  75 +                                               info->br);
  76 +
  77 +       err = dsa_switch_sync_vlan_filtering(ds, info);
  78 +       if (err)
  79 +               return err;
  80 +
  81         return 0;
  82  }
  83