Revert "net: dsa: Add more convenient functions for installing port VLANs"

This reverts commit 314f76d7.

Citing that commit message, the call graph was:

    dsa_slave_vlan_rx_add_vid   dsa_port_setup_8021q_tagging
                |                        |
                |                        |
                |          +-------------+
                |          |
                v          v
               dsa_port_vid_add      dsa_slave_port_obj_add
                      |                         |
                      +-------+         +-------+
                              |         |
                              v         v
                           dsa_port_vlan_add

Now that tag_8021q has its own ops structure, it no longer relies on
dsa_port_vid_add, and therefore on the dsa_switch_ops to install its
VLANs.

So dsa_port_vid_add now only has one single caller. So we can simplify
the call graph to what it was before, aka:

        dsa_slave_vlan_rx_add_vid     dsa_slave_port_obj_add
                      |                         |
                      +-------+         +-------+
                              |         |
                              v         v
                           dsa_port_vlan_add
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/dsa/dsa_priv.h

@@ -164,8 +164,6 @@ int dsa_port_vlan_add(struct dsa_port *dp,
 		      struct switchdev_trans *trans);
 int dsa_port_vlan_del(struct dsa_port *dp,
 		      const struct switchdev_obj_port_vlan *vlan);
-int dsa_port_vid_add(struct dsa_port *dp, u16 vid, u16 flags);
-int dsa_port_vid_del(struct dsa_port *dp, u16 vid);
 int dsa_port_link_register_of(struct dsa_port *dp);
 void dsa_port_link_unregister_of(struct dsa_port *dp);
 extern const struct phylink_mac_ops dsa_port_phylink_mac_ops;

net/dsa/port.c

@@ -433,39 +433,6 @@ int dsa_port_vlan_del(struct dsa_port *dp,
 	return dsa_port_notify(dp, DSA_NOTIFIER_VLAN_DEL, &info);
 }
 
-int dsa_port_vid_add(struct dsa_port *dp, u16 vid, u16 flags)
-{
-	struct switchdev_obj_port_vlan vlan = {
-		.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
-		.flags = flags,
-		.vid_begin = vid,
-		.vid_end = vid,
-	};
-	struct switchdev_trans trans;
-	int err;
-
-	trans.ph_prepare = true;
-	err = dsa_port_vlan_add(dp, &vlan, &trans);
-	if (err)
-		return err;
-
-	trans.ph_prepare = false;
-	return dsa_port_vlan_add(dp, &vlan, &trans);
-}
-EXPORT_SYMBOL(dsa_port_vid_add);
-
-int dsa_port_vid_del(struct dsa_port *dp, u16 vid)
-{
-	struct switchdev_obj_port_vlan vlan = {
-		.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
-		.vid_begin = vid,
-		.vid_end = vid,
-	};
-
-	return dsa_port_vlan_del(dp, &vlan);
-}
-EXPORT_SYMBOL(dsa_port_vid_del);
-
 static struct phy_device *dsa_port_get_phy_device(struct dsa_port *dp)
 {
 	struct device_node *phy_dn;

net/dsa/slave.c

@@ -1233,7 +1233,15 @@ static int dsa_slave_vlan_rx_add_vid(struct net_device *dev, __be16 proto,
 				     u16 vid)
 {
 	struct dsa_port *dp = dsa_slave_to_port(dev);
+	struct switchdev_obj_port_vlan vlan = {
+		.obj.id = SWITCHDEV_OBJ_ID_PORT_VLAN,
+		.vid_begin = vid,
+		.vid_end = vid,
+		/* This API only allows programming tagged, non-PVID VIDs */
+		.flags = 0,
+	};
 	struct bridge_vlan_info info;
+	struct switchdev_trans trans;
 	int ret;
 
 	/* Check for a possible bridge VLAN entry now since there is no
@@ -1252,11 +1260,25 @@ static int dsa_slave_vlan_rx_add_vid(struct net_device *dev, __be16 proto,
 			return -EBUSY;
 	}
 
-	ret = dsa_port_vid_add(dp, vid, 0);
+	/* User port... */
+	trans.ph_prepare = true;
+	ret = dsa_port_vlan_add(dp, &vlan, &trans);
+	if (ret)
+		return ret;
+
+	trans.ph_prepare = false;
+	ret = dsa_port_vlan_add(dp, &vlan, &trans);
 	if (ret)
 		return ret;
 
-	ret = dsa_port_vid_add(dp->cpu_dp, vid, 0);
+	/* And CPU port... */
+	trans.ph_prepare = true;
+	ret = dsa_port_vlan_add(dp->cpu_dp, &vlan, &trans);
+	if (ret)
+		return ret;
+
+	trans.ph_prepare = false;
+	ret = dsa_port_vlan_add(dp->cpu_dp, &vlan, &trans);
 	if (ret)
 		return ret;
 
@@ -1267,6 +1289,12 @@ static int dsa_slave_vlan_rx_kill_vid(struct net_device *dev, __be16 proto,
 				      u16 vid)
 {
 	struct dsa_port *dp = dsa_slave_to_port(dev);
+	struct switchdev_obj_port_vlan vlan = {
+		.vid_begin = vid,
+		.vid_end = vid,
+		/* This API only allows programming tagged, non-PVID VIDs */
+		.flags = 0,
+	};
 	struct bridge_vlan_info info;
 	int ret;
 
@@ -1289,7 +1317,7 @@ static int dsa_slave_vlan_rx_kill_vid(struct net_device *dev, __be16 proto,
 	/* Do not deprogram the CPU port as it may be shared with other user
 	 * ports which can be members of this VLAN as well.
 	 */
-	return dsa_port_vid_del(dp, vid);
+	return dsa_port_vlan_del(dp, &vlan);
 }
 
 struct dsa_hw_port {