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net: dsa: allow port_bridge_join() to override extack message

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Some drivers might report that they are unable to bridge ports by
returning -EOPNOTSUPP, but still wants to override extack message.
In order to do so, in dsa_slave_changeupper(), if port_bridge_join()
returns -EOPNOTSUPP, check if extack message is set and if so, do not
override it.

Signed-off-by: Clément Léger <clement.leger@bootlin.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Clément Léger 2022-06-24 16:39:46 +02:00 • committed by David S. Miller
parent ebeae54d3a
commit 1c6e8088d9
1 changed files with 3 additions and 2 deletions
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5
net/dsa/slave.c
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@ -2460,8 +2460,9 @@ static int dsa_slave_changeupper(struct net_device *dev,
if (!err) if (!err)
dsa_bridge_mtu_normalization(dp); dsa_bridge_mtu_normalization(dp);
if (err == -EOPNOTSUPP) { if (err == -EOPNOTSUPP) {
NL_SET_ERR_MSG_MOD(extack, if (!extack->_msg)
"Offloading not supported"); NL_SET_ERR_MSG_MOD(extack,
"Offloading not supported");
err = 0; err = 0;
} }
err = notifier_from_errno(err); err = notifier_from_errno(err);