net: dsa: Add teardown callback for drivers

This is helpful for e.g. draining per-driver (not per-port) tagger queues. Signed-off-by: Vladimir Oltean <olteanv@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
mariux64 · Jun 8, 2019 · 5e3f847 · 5e3f847
1 parent 146d442
commit 5e3f847
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diff --git a/include/net/dsa.h b/include/net/dsa.h
@@ -357,6 +357,7 @@ struct dsa_switch_ops {
 						  int port);
 
 	int	(*setup)(struct dsa_switch *ds);
+	void	(*teardown)(struct dsa_switch *ds);
 	u32	(*get_phy_flags)(struct dsa_switch *ds, int port);
 
 	/*

diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
@@ -408,6 +408,9 @@ static void dsa_switch_teardown(struct dsa_switch *ds)
 
 	dsa_switch_unregister_notifier(ds);
 
+	if (ds->ops->teardown)
+		ds->ops->teardown(ds);
+
 	if (ds->devlink) {
 		devlink_unregister(ds->devlink);
 		devlink_free(ds->devlink);