net: dsa: felix: make vsc9959_tas_guard_bands_update() visible to ocelot->ops

In a future change we will need to make
ocelot_port_update_active_preemptible_tcs() call
vsc9959_tas_guard_bands_update(), but that is currently not possible,
since the ocelot switch lib does not have access to functions private to
the DSA wrapper.

Move the pointer to vsc9959_tas_guard_bands_update() from felix->info
(which is private to the DSA driver) to ocelot->ops (which is also
visible to the ocelot switch lib).
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Message-ID: <20230705104422.49025-3-vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/dsa/ocelot/felix.c

@@ -1786,14 +1786,13 @@ static int felix_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
 {
 	struct ocelot *ocelot = ds->priv;
 	struct ocelot_port *ocelot_port = ocelot->ports[port];
-	struct felix *felix = ocelot_to_felix(ocelot);
 
 	ocelot_port_set_maxlen(ocelot, port, new_mtu);
 
 	mutex_lock(&ocelot->fwd_domain_lock);
 
-	if (ocelot_port->taprio && felix->info->tas_guard_bands_update)
-		felix->info->tas_guard_bands_update(ocelot, port);
+	if (ocelot_port->taprio && ocelot->ops->tas_guard_bands_update)
+		ocelot->ops->tas_guard_bands_update(ocelot, port);
 
 	mutex_unlock(&ocelot->fwd_domain_lock);
 

drivers/net/dsa/ocelot/felix.h

@@ -57,7 +57,6 @@ struct felix_info {
 	void	(*mdio_bus_free)(struct ocelot *ocelot);
 	int	(*port_setup_tc)(struct dsa_switch *ds, int port,
 				 enum tc_setup_type type, void *type_data);
-	void	(*tas_guard_bands_update)(struct ocelot *ocelot, int port);
 	void	(*port_sched_speed_set)(struct ocelot *ocelot, int port,
 					u32 speed);
 	void	(*phylink_mac_config)(struct ocelot *ocelot, int port,

drivers/net/dsa/ocelot/felix_vsc9959.c

@@ -2599,6 +2599,7 @@ static const struct ocelot_ops vsc9959_ops = {
 	.cut_through_fwd	= vsc9959_cut_through_fwd,
 	.tas_clock_adjust	= vsc9959_tas_clock_adjust,
 	.update_stats		= vsc9959_update_stats,
+	.tas_guard_bands_update	= vsc9959_tas_guard_bands_update,
 };
 
 static const struct felix_info felix_info_vsc9959 = {
@@ -2624,7 +2625,6 @@ static const struct felix_info felix_info_vsc9959 = {
 	.port_modes		= vsc9959_port_modes,
 	.port_setup_tc		= vsc9959_port_setup_tc,
 	.port_sched_speed_set	= vsc9959_sched_speed_set,
-	.tas_guard_bands_update	= vsc9959_tas_guard_bands_update,
 };
 
 /* The INTB interrupt is shared between for PTP TX timestamp availability

include/soc/mscc/ocelot.h

@@ -663,6 +663,7 @@ struct ocelot_ops {
 			      struct flow_stats *stats);
 	void (*cut_through_fwd)(struct ocelot *ocelot);
 	void (*tas_clock_adjust)(struct ocelot *ocelot);
+	void (*tas_guard_bands_update)(struct ocelot *ocelot, int port);
 	void (*update_stats)(struct ocelot *ocelot);
 };