ice: Refactor switch rule management structures and functions

This patch is an adaptation of the work originally done by Grishma
Kotecha <grishma.kotecha@intel.com> that in summary refactors the
switch filtering logic in the driver. More specifically,
 - Update the recipe structure to also store list of rules
 - Update the existing code for recipes like MAC, VLAN, ethtype etc to
   use list head that is attached to switch recipe structure
 - Add a common function to search for a rule entry and add a new rule
   entry. Update the code to use this new function.
 - Refactor the rem_handle_vsi_list function to simplify the logic

CC: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/ice/ice_adminq_cmd.h

@@ -443,6 +443,8 @@ struct ice_aqc_vsi_props {
 	u8 reserved[24];
 };
 
+#define ICE_MAX_NUM_RECIPES 64
+
 /* Add/Update/Remove/Get switch rules (indirect 0x02A0, 0x02A1, 0x02A2, 0x02A3)
  */
 struct ice_aqc_sw_rules {

drivers/net/ethernet/intel/ice/ice_common.c

@@ -388,20 +388,7 @@ static enum ice_status ice_init_fltr_mgmt_struct(struct ice_hw *hw)
 
 	INIT_LIST_HEAD(&sw->vsi_list_map_head);
 
-	mutex_init(&sw->mac_list_lock);
-	INIT_LIST_HEAD(&sw->mac_list_head);
-
-	mutex_init(&sw->vlan_list_lock);
-	INIT_LIST_HEAD(&sw->vlan_list_head);
-
-	mutex_init(&sw->eth_m_list_lock);
-	INIT_LIST_HEAD(&sw->eth_m_list_head);
-
-	mutex_init(&sw->promisc_list_lock);
-	INIT_LIST_HEAD(&sw->promisc_list_head);
-
-	mutex_init(&sw->mac_vlan_list_lock);
-	INIT_LIST_HEAD(&sw->mac_vlan_list_head);
+	ice_init_def_sw_recp(hw);
 
 	return 0;
 }
@@ -415,19 +402,28 @@ static void ice_cleanup_fltr_mgmt_struct(struct ice_hw *hw)
 	struct ice_switch_info *sw = hw->switch_info;
 	struct ice_vsi_list_map_info *v_pos_map;
 	struct ice_vsi_list_map_info *v_tmp_map;
+	struct ice_sw_recipe *recps;
+	u8 i;
 
 	list_for_each_entry_safe(v_pos_map, v_tmp_map, &sw->vsi_list_map_head,
 				 list_entry) {
 		list_del(&v_pos_map->list_entry);
 		devm_kfree(ice_hw_to_dev(hw), v_pos_map);
 	}
+	recps = hw->switch_info->recp_list;
+	for (i = 0; i < ICE_SW_LKUP_LAST; i++) {
+		struct ice_fltr_mgmt_list_entry *lst_itr, *tmp_entry;
+
+		recps[i].root_rid = i;
+		mutex_destroy(&recps[i].filt_rule_lock);
+		list_for_each_entry_safe(lst_itr, tmp_entry,
+					 &recps[i].filt_rules, list_entry) {
+			list_del(&lst_itr->list_entry);
+			devm_kfree(ice_hw_to_dev(hw), lst_itr);
+		}
+	}
 
-	mutex_destroy(&sw->mac_list_lock);
-	mutex_destroy(&sw->vlan_list_lock);
-	mutex_destroy(&sw->eth_m_list_lock);
-	mutex_destroy(&sw->promisc_list_lock);
-	mutex_destroy(&sw->mac_vlan_list_lock);
-
+	devm_kfree(ice_hw_to_dev(hw), sw->recp_list);
 	devm_kfree(ice_hw_to_dev(hw), sw);
 }
 

drivers/net/ethernet/intel/ice/ice_switch.h

@@ -39,6 +39,7 @@ enum ice_sw_lkup_type {
 	ICE_SW_LKUP_DFLT = 5,
 	ICE_SW_LKUP_ETHERTYPE_MAC = 8,
 	ICE_SW_LKUP_PROMISC_VLAN = 9,
+	ICE_SW_LKUP_LAST
 };
 
 struct ice_fltr_info {
@@ -98,6 +99,31 @@ struct ice_fltr_info {
 	u8 lan_en;	/* Indicate if packet can be forwarded to the uplink */
 };
 
+struct ice_sw_recipe {
+	struct list_head l_entry;
+
+	/* To protect modification of filt_rule list
+	 * defined below
+	 */
+	struct mutex filt_rule_lock;
+
+	/* List of type ice_fltr_mgmt_list_entry */
+	struct list_head filt_rules;
+
+	/* linked list of type recipe_list_entry */
+	struct list_head rg_list;
+	/* linked list of type ice_sw_fv_list_entry*/
+	struct list_head fv_list;
+	struct ice_aqc_recipe_data_elem *r_buf;
+	u8 recp_count;
+	u8 root_rid;
+	u8 num_profs;
+	u8 *prof_ids;
+
+	/* recipe bitmap: what all recipes makes this recipe */
+	DECLARE_BITMAP(r_bitmap, ICE_MAX_NUM_RECIPES);
+};
+
 /* Bookkeeping structure to hold bitmap of VSIs corresponding to VSI list id */
 struct ice_vsi_list_map_info {
 	struct list_head list_entry;
@@ -105,15 +131,9 @@ struct ice_vsi_list_map_info {
 	u16 vsi_list_id;
 };
 
-enum ice_sw_fltr_status {
-	ICE_FLTR_STATUS_NEW = 0,
-	ICE_FLTR_STATUS_FW_SUCCESS,
-	ICE_FLTR_STATUS_FW_FAIL,
-};
-
 struct ice_fltr_list_entry {
 	struct list_head list_entry;
-	enum ice_sw_fltr_status status;
+	enum ice_status status;
 	struct ice_fltr_info fltr_info;
 };
 
@@ -157,5 +177,6 @@ enum ice_status ice_add_vlan(struct ice_hw *hw, struct list_head *m_list);
 enum ice_status ice_remove_vlan(struct ice_hw *hw, struct list_head *v_list);
 enum ice_status
 ice_cfg_dflt_vsi(struct ice_hw *hw, u16 vsi_id, bool set, u8 direction);
+enum ice_status ice_init_def_sw_recp(struct ice_hw *hw);
 
 #endif /* _ICE_SWITCH_H_ */

drivers/net/ethernet/intel/ice/ice_type.h

@@ -253,19 +253,8 @@ struct ice_port_info {
 };
 
 struct ice_switch_info {
-	/* Switch VSI lists to MAC/VLAN translation */
-	struct mutex mac_list_lock;		/* protect MAC list */
-	struct list_head mac_list_head;
-	struct mutex vlan_list_lock;		/* protect VLAN list */
-	struct list_head vlan_list_head;
-	struct mutex eth_m_list_lock;	/* protect ethtype list */
-	struct list_head eth_m_list_head;
-	struct mutex promisc_list_lock;	/* protect promisc mode list */
-	struct list_head promisc_list_head;
-	struct mutex mac_vlan_list_lock;	/* protect MAC-VLAN list */
-	struct list_head mac_vlan_list_head;
-
 	struct list_head vsi_list_map_head;
+	struct ice_sw_recipe *recp_list;
 };
 
 /* Port hardware description */