target/linux/generic/backport-5.15/773-v5.18-1-net-dsa-Move-VLAN-filtering-syncing-out-of-dsa_switc.patch

   1 From 381a730182f1d174e1950cd4e63e885b1c302051 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: net: dsa: Move VLAN filtering syncing out of dsa_switch_bridge_leave
   5
   6 Most of dsa_switch_bridge_leave was, in fact, dealing with the syncing
   7 of VLAN filtering for switches on which that is a global
   8 setting. Separate the two phases to prepare for the cross-chip related
   9 bugfix in the following commit.
  10
  11 Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
  12 Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
  13 Signed-off-by: David S. Miller <davem@davemloft.net>
  14 ---
  15  net/dsa/switch.c | 38 +++++++++++++++++++++++++-------------
  16  1 file changed, 25 insertions(+), 13 deletions(-)
  17
  18 --- a/net/dsa/switch.c
  19 +++ b/net/dsa/switch.c
  20 @@ -113,25 +113,14 @@ static int dsa_switch_bridge_join(struct
  21         return dsa_tag_8021q_bridge_join(ds, info);
  22  }
  23
  24 -static int dsa_switch_bridge_leave(struct dsa_switch *ds,
  25 -                                  struct dsa_notifier_bridge_info *info)
  26 +static int dsa_switch_sync_vlan_filtering(struct dsa_switch *ds,
  27 +                                         struct dsa_notifier_bridge_info *info)
  28  {
  29 -       struct dsa_switch_tree *dst = ds->dst;
  30         struct netlink_ext_ack extack = {0};
  31         bool change_vlan_filtering = false;
  32         bool vlan_filtering;
  33         int err, port;
  34
  35 -       if (dst->index == info->tree_index && ds->index == info->sw_index &&
  36 -           ds->ops->port_bridge_leave)
  37 -               ds->ops->port_bridge_leave(ds, info->port, info->br);
  38 -
  39 -       if ((dst->index != info->tree_index || ds->index != info->sw_index) &&
  40 -           ds->ops->crosschip_bridge_leave)
  41 -               ds->ops->crosschip_bridge_leave(ds, info->tree_index,
  42 -                                               info->sw_index, info->port,
  43 -                                               info->br);
  44 -
  45         if (ds->needs_standalone_vlan_filtering && !br_vlan_enabled(info->br)) {
  46                 change_vlan_filtering = true;
  47                 vlan_filtering = true;
  48 @@ -172,6 +161,29 @@ static int dsa_switch_bridge_leave(struc
  49                         return err;
  50         }
  51
  52 +       return 0;
  53 +}
  54 +
  55 +static int dsa_switch_bridge_leave(struct dsa_switch *ds,
  56 +                                  struct dsa_notifier_bridge_info *info)
  57 +{
  58 +       struct dsa_switch_tree *dst = ds->dst;
  59 +       int err;
  60 +
  61 +       if (dst->index == info->tree_index && ds->index == info->sw_index &&
  62 +           ds->ops->port_bridge_leave)
  63 +               ds->ops->port_bridge_leave(ds, info->port, info->br);
  64 +
  65 +       if ((dst->index != info->tree_index || ds->index != info->sw_index) &&
  66 +           ds->ops->crosschip_bridge_leave)
  67 +               ds->ops->crosschip_bridge_leave(ds, info->tree_index,
  68 +                                               info->sw_index, info->port,
  69 +                                               info->br);
  70 +
  71 +       err = dsa_switch_sync_vlan_filtering(ds, info);
  72 +       if (err)
  73 +               return err;
  74 +
  75         return dsa_tag_8021q_bridge_leave(ds, info);
  76  }
  77