linux-kernel - [PATCH v3 net-next 2/7] net: dsa: be louder when a non-legacy FDB operation fails

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Date:   Sun, 13 Dec 2020 16:07:05 +0200
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, bridge@...ts.linux-foundation.org,
        Roopa Prabhu <roopa@...dia.com>,
        Nikolay Aleksandrov <nikolay@...dia.com>,
        "David S. Miller" <davem@...emloft.net>
Cc:     DENG Qingfang <dqfext@...il.com>,
        Tobias Waldekranz <tobias@...dekranz.com>,
        Marek Behun <marek.behun@....cz>,
        Russell King - ARM Linux admin <linux@...linux.org.uk>,
        Alexandra Winter <wintera@...ux.ibm.com>,
        Jiri Pirko <jiri@...nulli.us>,
        Ido Schimmel <idosch@...sch.org>,
        Claudiu Manoil <claudiu.manoil@....com>,
        UNGLinuxDriver@...rochip.com
Subject: [PATCH v3 net-next 2/7] net: dsa: be louder when a non-legacy FDB operation fails

The dev_close() call was added in commit c9eb3e0f8701 ("net: dsa: Add
support for learning FDB through notification") "to indicate inconsistent
situation" when we could not delete an FDB entry from the port.

bridge fdb del d8:58:d7:00:ca:6d dev swp0 self master

It is a bit drastic and at the same time not helpful if the above fails
to only print with netdev_dbg log level, but on the other hand to bring
the interface down.

So increase the verbosity of the error message, and drop dev_close().

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
Changes in v3:
Patch is new.

 net/dsa/slave.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 4a0498bf6c65..d5d389300124 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -2072,7 +2072,9 @@ static void dsa_slave_switchdev_event_work(struct work_struct *work)
 
 		err = dsa_port_fdb_add(dp, fdb_info->addr, fdb_info->vid);
 		if (err) {
-			netdev_dbg(dev, "fdb add failed err=%d\n", err);
+			netdev_err(dev,
+				   "failed to add %pM vid %d to fdb: %d\n",
+				   fdb_info->addr, fdb_info->vid, err);
 			break;
 		}
 		fdb_info->offloaded = true;
@@ -2087,9 +2089,11 @@ static void dsa_slave_switchdev_event_work(struct work_struct *work)
 
 		err = dsa_port_fdb_del(dp, fdb_info->addr, fdb_info->vid);
 		if (err) {
-			netdev_dbg(dev, "fdb del failed err=%d\n", err);
-			dev_close(dev);
+			netdev_err(dev,
+				   "failed to delete %pM vid %d from fdb: %d\n",
+				   fdb_info->addr, fdb_info->vid, err);
 		}
+
 		break;
 	}
 	rtnl_unlock();
-- 
2.25.1