module huawei-segment-routing {

    yang-version 1;

    namespace
      "urn:huawei:yang:huawei-segment-routing";

    prefix sr;

    import huawei-routing-policy {
      prefix rtp;
    }
    import ietf-inet-types {
      prefix inet;
    }
    import huawei-extension {
      prefix ext;
    }
    import huawei-network-instance {
      prefix ni;
    }
    import huawei-pub-type {
      prefix pub-type;
    }
    import ietf-yang-types {
      prefix yang;
    }

    include huawei-segment-routing-type;

    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 "Segment routing.";

    revision "2021-05-17" {
      description
        "Add container traffic-statistics.";
      reference
        "Huawei private.";

    }

    revision "2021-01-20" {
      description "Add Dependency.";
      reference
        "Huawei private.";

    }

    revision "2020-03-13" {
      description
        "Modify the format specification.";
      reference
        "Huawei private.";

    }

    revision "2020-03-09" {
      description "Modify the description.";
      reference
        "Huawei private.";

    }

    revision "2020-03-03" {
      description "Modify the description.";
      reference
        "Huawei private.";

    }

    revision "2020-02-04" {
      description "Modify the description.";
      reference
        "Huawei private.";

    }

    revision "2019-12-23" {
      description
        "Reconstructing Yang file by yin mechanism.";
      reference
        "Huawei private.";

    }

    revision "2019-11-15" {
      description
        "Reconstructing Yang file by yin mechanism.";
      reference
        "Huawei private.";

    }

    revision "2019-09-21" {
      description
        "Reconstructing Yang file by yin mechanism.";
      reference
        "Huawei private.";

    }

    revision "2019-04-04" {
      description "Initial revision.";
      reference
        "Huawei private.";

    }

    ext:task-name "segr";

    rpc reset-traffic-statistics {
      description
        "Reset SR LSP traffic statistics.";
      input {
        leaf ip-address {
          type inet:ipv4-address-no-zone;
          description
            "The prefix IP address.";
        }

        leaf mask-length {
          type uint8 {
            range "32";
          }
          description
            "Specifies a mask length, the value is 32.";
        }
      }
    }  // rpc reset-traffic-statistics

    rpc get-srlb-by-range {
      description
        "Statistics of segment routing local block. The range of local labels reserved by the local device for segment routing.";
      input {
        leaf range {
          type uint32 {
            range "2..4294967295";
          }
          description
            "Total number of SIDs available.";
        }
      }

      output {
        container local-block-ranges {
          description
            "List of the available range of segment routing local block.";
          list local-block-range {
            key "begin-value end-value";
            description
              "The available range of segment routing local block.";
            leaf begin-value {
              type uint32 {
                range "2..4294967295";
              }
              description
                "Minimum SID available.";
            }

            leaf end-value {
              type uint32 {
                range "2..4294967295";
              }
              description
                "Maximum SID available.";
            }

            leaf range {
              type uint32 {
                range "2..4294967295";
              }
              description
                "Total number of SIDs available.";
            }
          }  // list local-block-range
        }  // container local-block-ranges
      }
    }  // rpc get-srlb-by-range

    rpc get-srgb-by-range {
      description
        "Statistics of segment routing dynamic global block. The range of dynamic global labels reserved for segment routing.";
      input {
        leaf range {
          type uint32 {
            range "2..4294967295";
          }
          description
            "Total number of SIDs available.";
        }
      }

      output {
        container global-block-ranges {
          description
            "List of the range of dynamic global labels reserved for segment routing.";
          list global-block-range {
            key "begin-value end-value";
            description
              "The range of dynamic global labels reserved for segment routing.";
            leaf begin-value {
              type uint32 {
                range "2..4294967295";
              }
              description
                "The begin value of dynamic global block.";
            }

            leaf end-value {
              type uint32 {
                range "2..4294967295";
              }
              description
                "The end value of dynamic global block.";
            }

            leaf range {
              type uint32 {
                range "2..4294967295";
              }
              description
                "The value range of dynamic global block.";
            }
          }  // list global-block-range
        }  // container global-block-ranges
      }
    }  // rpc get-srgb-by-range

    rpc get-sr-states {
      description
        "Segment routing status information based on a specified address prefix.";
      input {
        leaf ip-address {
          type inet:ipv4-address-no-zone;
          mandatory true;
          description
            "The prefix IP address.";
        }

        leaf mask-length {
          type uint8 {
            range "1..32";
          }
          mandatory true;
          description
            "The length of prefix mask.";
        }

        leaf flex-algo-id {
          type uint8 {
            range "128..255";
          }
          description
            "Flexible algorithm identifier.";
        }
      }

      output {
        container sr-states {
          description
            "List of segment routing status information based on a specified address prefix.";
          list sr-state {
            key "ip-address mask-length flex-algo-id protocol";
            description
              "Statistics of label for transmission.";
            leaf ip-address {
              type inet:ipv4-address-no-zone;
              description
                "The prefix IP address.";
            }

            leaf mask-length {
              type uint8 {
                range "1..32";
              }
              description
                "The length of prefix mask.";
            }

            leaf flex-algo-id {
              type uint8 {
                range "0|128..255";
              }
              description
                "Flexible algorithm identifier.";
            }

            leaf protocol {
              type string {
                length "1..20";
              }
              description "Protocol.";
            }

            leaf process-id {
              type uint32 {
                range "1..4294967295";
              }
              description "Process ID.";
            }

            leaf prefix-id {
              type uint32 {
                range "1..4294967295";
              }
              description "Prefix SID.";
            }

            leaf route-active {
              type string {
                length "1..20";
              }
              description
                "Whether a route is active.";
            }

            leaf eligible-within-process {
              type string {
                length "1..20";
              }
              description
                "Whether a SID is preferentially selected within a process.";
            }

            leaf eligible-between-processes {
              type string {
                length "1..20";
              }
              description
                "Whether the Segment Routing next hop is preferentially selected within a process or between protocols.";
            }

            leaf nexthop-exist {
              type string {
                length "1..20";
              }
              description
                "Whether a Segment Routing next hop exists.";
            }

            leaf prefix-sid-within-min-srgb-range {
              type string {
                length "1..20";
              }
              description
                "Whether a prefix SID is within the smallest SRGB scope. The smallest SRGB scope is determined among all SRGB scopes on all nodes on a whole path including the root node.";
            }

            leaf prefix-sid-favor-state {
              type string {
                length "1..20";
              }
              description
                "Whether the prefix SID is preferred. If the same prefix and different SIDs are set on different nodes, a process preferentially selects an active SID based on a specified rule.";
            }
          }  // list sr-state
        }  // container sr-states
      }
    }  // rpc get-sr-states
  }  // module huawei-segment-routing