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net: switchdev: recurse into __switchdev_handle_fdb_del_to_device 

The difference between __switchdev_handle_fdb_del_to_device and
switchdev_handle_del_to_device is that the former takes an extra
orig_dev argument, while the latter starts with dev == orig_dev.

We should recurse into the variant that does not lose the orig_dev along
the way. This is relevant when deleting FDB entries pointing towards a
bridge (dev changes to the lower interfaces, but orig_dev shouldn't).

The addition helper already recurses properly, just the deletion one
doesn't.

Fixes: 8ca07176ab ("net: switchdev: introduce a fanout helper for SWITCHDEV_FDB_{ADD,DEL}_TO_DEVICE")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vladimir Oltean 2021-07-20 20:35:57 +03:00 committed by David S. Miller
parent 94111dfc18
commit 71f4f89a03
1 changed files with 4 additions and 4 deletions
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8
net/switchdev/switchdev.c
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@ -532,10 +532,10 @@ static int __switchdev_handle_fdb_del_to_device(struct net_device *dev,
if (netif_is_bridge_master(lower_dev))
continue;
err = switchdev_handle_fdb_del_to_device(lower_dev, fdb_info,
check_cb,
foreign_dev_check_cb,
del_cb, lag_del_cb);
err = __switchdev_handle_fdb_del_to_device(lower_dev, orig_dev,
fdb_info, check_cb,
foreign_dev_check_cb,
del_cb, lag_del_cb);
if (err && err != -EOPNOTSUPP)
return err;
}