target/linux/generic/backport-5.4/771-v5.12-net-dsa-be-louder-when-a-non-legacy-FDB-operation-fa.patch

   1 From 2fd186501b1cff155cc4a755c210793cfc0dffb5 Mon Sep 17 00:00:00 2001
   2 From: Vladimir Oltean <vladimir.oltean@nxp.com>
   3 Date: Wed, 6 Jan 2021 11:51:31 +0200
   4 Subject: [PATCH] net: dsa: be louder when a non-legacy FDB operation fails
   5
   6 The dev_close() call was added in commit c9eb3e0f8701 ("net: dsa: Add
   7 support for learning FDB through notification") "to indicate inconsistent
   8 situation" when we could not delete an FDB entry from the port.
   9
  10 bridge fdb del d8:58:d7:00:ca:6d dev swp0 self master
  11
  12 It is a bit drastic and at the same time not helpful if the above fails
  13 to only print with netdev_dbg log level, but on the other hand to bring
  14 the interface down.
  15
  16 So increase the verbosity of the error message, and drop dev_close().
  17
  18 Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
  19 Reviewed-by: Andrew Lunn <andrew@lunn.ch>
  20 Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
  21 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
  22 ---
  23  net/dsa/slave.c | 10 +++++++---
  24  1 file changed, 7 insertions(+), 3 deletions(-)
  25
  26 --- a/net/dsa/slave.c
  27 +++ b/net/dsa/slave.c
  28 @@ -1590,7 +1590,9 @@ static void dsa_slave_switchdev_event_wo
  29
  30                 err = dsa_port_fdb_add(dp, fdb_info->addr, fdb_info->vid);
  31                 if (err) {
  32 -                       netdev_dbg(dev, "fdb add failed err=%d\n", err);
  33 +                       netdev_err(dev,
  34 +                                  "failed to add %pM vid %d to fdb: %d\n",
  35 +                                  fdb_info->addr, fdb_info->vid, err);
  36                         break;
  37                 }
  38                 fdb_info->offloaded = true;
  39 @@ -1605,9 +1607,11 @@ static void dsa_slave_switchdev_event_wo
  40
  41                 err = dsa_port_fdb_del(dp, fdb_info->addr, fdb_info->vid);
  42                 if (err) {
  43 -                       netdev_dbg(dev, "fdb del failed err=%d\n", err);
  44 -                       dev_close(dev);
  45 +                       netdev_err(dev,
  46 +                                  "failed to delete %pM vid %d from fdb: %d\n",
  47 +                                  fdb_info->addr, fdb_info->vid, err);
  48                 }
  49 +
  50                 break;
  51         }
  52         rtnl_unlock();