net: dsa: make tag_8021q operations part of the core

Make tag_8021q a more central element of DSA and move the 2 driver
specific operations outside of struct dsa_8021q_context (which is
supposed to hold dynamic data and not really constant function
pointers).

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/ocelot/felix.c

@@ -231,11 +231,6 @@ static int felix_tag_8021q_vlan_del(struct dsa_switch *ds, int port, u16 vid)
 	return 0;
 }
 
-static const struct dsa_8021q_ops felix_tag_8021q_ops = {
-	.vlan_add	= felix_tag_8021q_vlan_add,
-	.vlan_del	= felix_tag_8021q_vlan_del,
-};
-
 /* Alternatively to using the NPI functionality, that same hardware MAC
  * connected internally to the enetc or fman DSA master can be configured to
  * use the software-defined tag_8021q frame format. As far as the hardware is
@@ -425,8 +420,7 @@ static int felix_setup_tag_8021q(struct dsa_switch *ds, int cpu)
 	ocelot_rmw_rix(ocelot, 0, cpu_flood, ANA_PGID_PGID, PGID_MC);
 	ocelot_rmw_rix(ocelot, 0, cpu_flood, ANA_PGID_PGID, PGID_BC);
 
-	err = dsa_tag_8021q_register(ds, &felix_tag_8021q_ops,
-				     htons(ETH_P_8021AD));
+	err = dsa_tag_8021q_register(ds, htons(ETH_P_8021AD));
 	if (err)
 		return err;
 
@@ -1675,6 +1669,8 @@ const struct dsa_switch_ops felix_switch_ops = {
 	.port_mrp_del			= felix_mrp_del,
 	.port_mrp_add_ring_role		= felix_mrp_add_ring_role,
 	.port_mrp_del_ring_role		= felix_mrp_del_ring_role,
+	.tag_8021q_vlan_add		= felix_tag_8021q_vlan_add,
+	.tag_8021q_vlan_del		= felix_tag_8021q_vlan_del,
 };
 
 struct net_device *felix_port_to_netdev(struct ocelot *ocelot, int port)

drivers/net/dsa/sja1105/sja1105_main.c

@@ -2543,11 +2543,6 @@ static int sja1105_dsa_8021q_vlan_del(struct dsa_switch *ds, int port, u16 vid)
 	return sja1105_build_vlan_table(priv, true);
 }
 
-static const struct dsa_8021q_ops sja1105_dsa_8021q_ops = {
-	.vlan_add	= sja1105_dsa_8021q_vlan_add,
-	.vlan_del	= sja1105_dsa_8021q_vlan_del,
-};
-
 /* The programming model for the SJA1105 switch is "all-at-once" via static
  * configuration tables. Some of these can be dynamically modified at runtime,
  * but not the xMII mode parameters table.
@@ -3153,6 +3148,8 @@ static const struct dsa_switch_ops sja1105_switch_ops = {
 	.crosschip_bridge_join	= sja1105_crosschip_bridge_join,
 	.crosschip_bridge_leave	= sja1105_crosschip_bridge_leave,
 	.devlink_info_get	= sja1105_devlink_info_get,
+	.tag_8021q_vlan_add	= sja1105_dsa_8021q_vlan_add,
+	.tag_8021q_vlan_del	= sja1105_dsa_8021q_vlan_del,
 };
 
 static const struct of_device_id sja1105_dt_ids[];
@@ -3296,8 +3293,7 @@ static int sja1105_probe(struct spi_device *spi)
 	mutex_init(&priv->ptp_data.lock);
 	mutex_init(&priv->mgmt_lock);
 
-	rc = dsa_tag_8021q_register(ds, &sja1105_dsa_8021q_ops,
-				    htons(ETH_P_8021Q));
+	rc = dsa_tag_8021q_register(ds, htons(ETH_P_8021Q));
 	if (rc)
 		return rc;
 

include/linux/dsa/8021q.h

@@ -21,22 +21,14 @@ struct dsa_8021q_crosschip_link {
 	refcount_t refcount;
 };
 
-struct dsa_8021q_ops {
-	int (*vlan_add)(struct dsa_switch *ds, int port, u16 vid, u16 flags);
-	int (*vlan_del)(struct dsa_switch *ds, int port, u16 vid);
-};
-
 struct dsa_8021q_context {
-	const struct dsa_8021q_ops *ops;
 	struct dsa_switch *ds;
 	struct list_head crosschip_links;
 	/* EtherType of RX VID, used for filtering on master interface */
 	__be16 proto;
 };
 
-int dsa_tag_8021q_register(struct dsa_switch *ds,
-			   const struct dsa_8021q_ops *ops,
-			   __be16 proto);
+int dsa_tag_8021q_register(struct dsa_switch *ds, __be16 proto);
 
 void dsa_tag_8021q_unregister(struct dsa_switch *ds);
 

include/net/dsa.h

@@ -872,6 +872,13 @@ struct dsa_switch_ops {
 					  const struct switchdev_obj_ring_role_mrp *mrp);
 	int	(*port_mrp_del_ring_role)(struct dsa_switch *ds, int port,
 					  const struct switchdev_obj_ring_role_mrp *mrp);
+
+	/*
+	 * tag_8021q operations
+	 */
+	int	(*tag_8021q_vlan_add)(struct dsa_switch *ds, int port, u16 vid,
+				      u16 flags);
+	int	(*tag_8021q_vlan_del)(struct dsa_switch *ds, int port, u16 vid);
 };
 
 #define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes)		\

net/dsa/tag_8021q.c

@@ -116,13 +116,12 @@ EXPORT_SYMBOL_GPL(vid_is_dsa_8021q);
 static int dsa_8021q_vid_apply(struct dsa_switch *ds, int port, u16 vid,
 			       u16 flags, bool enabled)
 {
-	struct dsa_8021q_context *ctx = ds->tag_8021q_ctx;
 	struct dsa_port *dp = dsa_to_port(ds, port);
 
 	if (enabled)
-		return ctx->ops->vlan_add(ctx->ds, dp->index, vid, flags);
+		return ds->ops->tag_8021q_vlan_add(ds, dp->index, vid, flags);
 
-	return ctx->ops->vlan_del(ctx->ds, dp->index, vid);
+	return ds->ops->tag_8021q_vlan_del(ds, dp->index, vid);
 }
 
 /* RX VLAN tagging (left) and TX VLAN tagging (right) setup shown for a single
@@ -413,17 +412,14 @@ int dsa_8021q_crosschip_bridge_leave(struct dsa_switch *ds, int port,
 }
 EXPORT_SYMBOL_GPL(dsa_8021q_crosschip_bridge_leave);
 
-int dsa_tag_8021q_register(struct dsa_switch *ds,
-			   const struct dsa_8021q_ops *ops,
-			   __be16 proto)
+int dsa_tag_8021q_register(struct dsa_switch *ds, __be16 proto)
 {
 	struct dsa_8021q_context *ctx;
 
 	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
 	if (!ctx)
 		return -ENOMEM;
 
-	ctx->ops = ops;
 	ctx->proto = proto;
 	ctx->ds = ds;