net: ethernet: ti: cpsw_ale: add cpsw_ale_vlan_del_modify()

Add/export cpsw_ale_vlan_del_modify() and use it in cpsw_switchdev instead
of generic cpsw_ale_del_vlan() to avoid mixing 8021Q and switchdev VLAN
offload. This is preparation patch equired by follow up changes.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/ti/cpsw_ale.c

@@ -634,7 +634,7 @@ int cpsw_ale_add_vlan(struct cpsw_ale *ale, u16 vid, int port_mask, int untag,
 	return 0;
 }
 
-static void cpsw_ale_del_vlan_modify(struct cpsw_ale *ale, u32 *ale_entry,
+static void cpsw_ale_vlan_del_modify_int(struct cpsw_ale *ale,  u32 *ale_entry,
 					 u16 vid, int port_mask)
 {
 	int reg_mcast, unreg_mcast;
@@ -644,6 +644,7 @@ static void cpsw_ale_del_vlan_modify(struct cpsw_ale *ale, u32 *ale_entry,
 					ALE_ENT_VID_MEMBER_LIST);
 	members &= ~port_mask;
 	if (!members) {
+		cpsw_ale_set_vlan_untag(ale, ale_entry, vid, 0);
 		cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_FREE);
 		return;
 	}
@@ -673,6 +674,23 @@ static void cpsw_ale_del_vlan_modify(struct cpsw_ale *ale, u32 *ale_entry,
 			      ALE_ENT_VID_MEMBER_LIST, members);
 }
 
+int cpsw_ale_vlan_del_modify(struct cpsw_ale *ale, u16 vid, int port_mask)
+{
+	u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0};
+	int idx;
+
+	idx = cpsw_ale_match_vlan(ale, vid);
+	if (idx < 0)
+		return -ENOENT;
+
+	cpsw_ale_read(ale, idx, ale_entry);
+
+	cpsw_ale_vlan_del_modify_int(ale, ale_entry, vid, port_mask);
+	cpsw_ale_write(ale, idx, ale_entry);
+
+	return 0;
+}
+
 int cpsw_ale_del_vlan(struct cpsw_ale *ale, u16 vid, int port_mask)
 {
 	u32 ale_entry[ALE_ENTRY_WORDS] = {0, 0, 0};
@@ -685,7 +703,7 @@ int cpsw_ale_del_vlan(struct cpsw_ale *ale, u16 vid, int port_mask)
 	cpsw_ale_read(ale, idx, ale_entry);
 
 	if (port_mask) {
-		cpsw_ale_del_vlan_modify(ale, ale_entry, vid, port_mask);
+		cpsw_ale_vlan_del_modify_int(ale, ale_entry, vid, port_mask);
 	} else {
 		cpsw_ale_set_vlan_untag(ale, ale_entry, vid, 0);
 		cpsw_ale_set_entry_type(ale_entry, ALE_TYPE_FREE);

drivers/net/ethernet/ti/cpsw_ale.h

@@ -134,6 +134,7 @@ static inline int cpsw_ale_get_vlan_p0_untag(struct cpsw_ale *ale, u16 vid)
 
 int cpsw_ale_vlan_add_modify(struct cpsw_ale *ale, u16 vid, int port_mask,
 			     int untag_mask, int reg_mcast, int unreg_mcast);
+int cpsw_ale_vlan_del_modify(struct cpsw_ale *ale, u16 vid, int port_mask);
 void cpsw_ale_set_unreg_mcast(struct cpsw_ale *ale, int unreg_mcast_mask,
 			      bool add);
 

drivers/net/ethernet/ti/cpsw_switchdev.c

@@ -227,7 +227,7 @@ static int cpsw_port_vlan_del(struct cpsw_priv *priv, u16 vid,
 	else
 		port_mask = BIT(priv->emac_port);
 
-	ret = cpsw_ale_del_vlan(cpsw->ale, vid, port_mask);
+	ret = cpsw_ale_vlan_del_modify(cpsw->ale, vid, port_mask);
 	if (ret != 0)
 		return ret;