module huawei-unicast-fwd-srv6 {

    yang-version 1;

    namespace
      "urn:huawei:yang:huawei-unicast-fwd-srv6";

    prefix unicast-fwd-srv6;

    import huawei-network-instance {
      prefix ni;
    }
    import huawei-extension {
      prefix ext;
    }
    import huawei-srv6 {
      prefix srv6;
    }
    import huawei-license {
      prefix lcs;
    }
    import huawei-devm {
      prefix devm;
    }

    organization
      "Huawei Technologies Co., Ltd.";

    contact
      "Huawei Industrial Base
    Bantian, Longgang
    Shenzhen 518129
    People's Republic of China
    Website: http://www.huawei.com
    Email: support@huawei.com";

    description
      "Unicast forward SRv6 configuration.";

    revision "2021-04-17" {
      description
        "Add network slice license nodes.";
      reference
        "Huawei private.";

    }

    revision "2020-03-19" {
      description "Initial revision.";
      reference
        "Huawei private.";

    }

    ext:task-name "forwarding";

    typedef srv6-ttl-mode-type {
      type enumeration {
        enum "pipe" {
          value 1;
          description "Pipe mode.";
        }
        enum "uniform" {
          value 3;
          description "Uniform mode.";
        }
      }
      description "SRv6 TTL mode type.";
    }

    typedef lcs-slice-rtu-type {
      type enumeration {
        enum "data-plane" {
          value 1;
          description
            "License type for data-plane.";
        }
        enum "flex-channel" {
          value 2;
          description
            "License type for flex-channel.";
        }
      }
      description
        "Network-slice license type.";
    }

    augment /ni:network-instance/ni:instances/ni:instance/srv6:srv6 {
      description
        "Unicast forward configuration to the SRv6 module.";
      container global-ipv6uc-attribute {
        when "../srv6:enable = 'true'";
        description
          "Configure global IPv6 unicast attributes.";
        leaf forward-mode-through {
          type boolean;
          default "false";
          description
            "Enable/disable the forwarding mode of an SRv6 Tunnel to software loopback.";
        }

        leaf srv6-ttl-mode {
          type srv6-ttl-mode-type;
          default "pipe";
          description
            "Set SRv6 tunnel-encapsulated mode.";
        }
      }  // container global-ipv6uc-attribute
    }

    augment /lcs:license {
      description "Network slice license.";
      container lcs-network-slices {
        description
          "List of license information about all boards network-slice resources.";
        list lcs-network-slice {
          key "slot-id license-type";
          description
            "Configure license information about a board to active network-slice resources.";
          leaf slot-id {
            type leafref {
              path
                "/devm:devm/devm:lpu-boards/devm:lpu-board/devm:position";
            }
            description
              "Indicates the slot ID of a board.";
          }

          leaf license-type {
            type lcs-slice-rtu-type;
            description
              "Network slice license type.";
          }

          leaf resource-size {
            type uint32 {
              range "1..65535";
            }
            mandatory true;
            description
              "The number of network-slice resources is related to a specific board.";
          }
        }  // list lcs-network-slice
      }  // container lcs-network-slices

      container lcs-usage-slice-items {
        config false;
        description
          "List of network slice license resource usage information.";
        list lcs-usage-slice-item {
          key "feature-name";
          description
            "Statistics of network slice license resource usage information.";
          leaf feature-name {
            type string {
              length "1..31";
            }
            description
              "Name of the control item corresponding to the network license.";
          }

          leaf feature-description {
            type string {
              length "1..255";
            }
            description
              "Description of the control item corresponding to the network license.";
          }

          leaf activated-total {
            type uint32;
            description
              "Number of activated resources.";
          }

          leaf available-total {
            type uint32;
            description
              "Number of remaining available resources.";
          }

          leaf total {
            type uint32;
            description
              "Total number of resources.";
          }

          container lcs-info-boards {
            description
              "List of board network slice license information.";
            list lcs-info-board {
              key "position";
              description
                "Statistics of network slice license usage information on a board.";
              leaf position {
                type string {
                  length "1..32";
                }
                description
                  "Board position.";
              }

              leaf barcode {
                type string {
                  length "1..128";
                }
                description
                  "Bar code in the electronic label of a board.";
              }

              leaf usage-on-board {
                type uint32;
                description
                  "Number of used resources on a board.";
              }

              leaf available-on-board {
                type uint32;
                description
                  "Number of remaining available resources on a board.";
              }

              leaf activated-on-board {
                type uint32;
                description
                  "Total number of resources on a board.";
              }
            }  // list lcs-info-board
          }  // container lcs-info-boards
        }  // list lcs-usage-slice-item
      }  // container lcs-usage-slice-items
    }
  }  // module huawei-unicast-fwd-srv6