[DASH] 1/ Add ENI mode VM/FNIC, counter ENI_TRUSTED_VNI_ENTRY_MISS_DROP_PACKETS (#2158)

2/ Add eni_trusted_vni entry
3/ Add global_trusted_vni entry

Author: jimmyzhai

experimental/saiexperimentaldashdirectionlookup.h

@@ -42,6 +42,8 @@ typedef enum _sai_direction_lookup_entry_action_t
 {
     SAI_DIRECTION_LOOKUP_ENTRY_ACTION_SET_OUTBOUND_DIRECTION,
 
+    SAI_DIRECTION_LOOKUP_ENTRY_ACTION_SET_INBOUND_DIRECTION,
+
 } sai_direction_lookup_entry_action_t;
 
 /**
@@ -88,6 +90,7 @@ typedef enum _sai_direction_lookup_entry_attr_t
      * @type sai_dash_eni_mac_override_type_t
      * @flags CREATE_AND_SET
      * @default SAI_DASH_ENI_MAC_OVERRIDE_TYPE_NONE
+     * @validonly SAI_DIRECTION_LOOKUP_ENTRY_ATTR_ACTION == SAI_DIRECTION_LOOKUP_ENTRY_ACTION_SET_OUTBOUND_DIRECTION or SAI_DIRECTION_LOOKUP_ENTRY_ATTR_ACTION == SAI_DIRECTION_LOOKUP_ENTRY_ACTION_SET_INBOUND_DIRECTION
      */
     SAI_DIRECTION_LOOKUP_ENTRY_ATTR_DASH_ENI_MAC_OVERRIDE_TYPE,
 

experimental/saiexperimentaldasheni.h

@@ -556,6 +556,15 @@ typedef enum _sai_eni_attr_t
      */
     SAI_ENI_ATTR_FLOW_TABLE_ID,
 
+    /**
+     * @brief Action parameter DASH ENI mode
+     *
+     * @type sai_dash_eni_mode_t
+     * @flags CREATE_ONLY
+     * @default SAI_DASH_ENI_MODE_VM
+     */
+    SAI_ENI_ATTR_DASH_ENI_MODE,
+
     /**
      * @brief End of attributes
      */
@@ -814,6 +823,9 @@ typedef enum _sai_eni_stat_t
     /** DASH ENI OUTBOUND_PORT_MAP_PORT_RANGE_ENTRY_MISS_DROP_PACKETS stat count */
     SAI_ENI_STAT_OUTBOUND_PORT_MAP_PORT_RANGE_ENTRY_MISS_DROP_PACKETS,
 
+    /** DASH ENI ENI_TRUSTED_VNI_ENTRY_MISS_DROP_PACKETS stat count */
+    SAI_ENI_STAT_ENI_TRUSTED_VNI_ENTRY_MISS_DROP_PACKETS,
+
 } sai_eni_stat_t;
 
 /**