module huawei-bgp-srv6 {

    yang-version 1;

    namespace
      "urn:huawei:yang:huawei-bgp-srv6";

    prefix bgp-srv6;

    import huawei-network-instance {
      prefix ni;
    }
    import huawei-extension {
      prefix ext;
    }
    import huawei-bgp {
      prefix bgp;
    }
    import huawei-srv6 {
      prefix srv6;
    }

    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 "BGP SRv6 configuration.";

    revision "2020-03-13" {
      description
        "The modifications about srv6-be are synchronized to the YANG file.";
      reference
        "Huawei private.";

    }

    revision "2020-02-25" {
      description
        "The YANG descriptions are modified according to new standards.";
      reference
        "Huawei private.";

    }

    revision "2019-03-22" {
      description "Initial revision.";
      reference
        "Huawei private.";

    }

    ext:task-name "bgp";

    typedef apply-sid-mode {
      type enumeration {
        enum "per-instance" {
          value 0;
          description
            "Allocate a SID per VPN instance.";
        }
        enum "per-nexthop" {
          value 1;
          description
            "Allocate a SID per next hop.";
        }
      }
      description
        "SID allocation mode of SRv6 for BGP.";
    }

    augment /ni:network-instance/ni:instances/ni:instance/bgp:bgp/bgp:base-process/bgp:afs/bgp:af/bgp:ipv4-unicast {
      description "BGP SRv6 configuration.";
      container locators {
        description
          "List of locators used by segment-routing IPv6 for BGP.";
        list locator {
          key "name";
          max-elements 1;
          description
            "Configure SRv6 locator.";
          leaf name {
            type leafref {
              path
                "/ni:network-instance/ni:instances/ni:instance/srv6:srv6/srv6:locators/srv6:locator/srv6:name";
            }
            description "Locator name.";
          }

          leaf auto-sid {
            when
              "../../../../../../../../ni:name!='_public_' and ../name";
            type boolean;
            default "true";
            description
              "Enable/disable SID automatic allocation ability.";
          }

          leaf apply-sid-mode {
            when
              "../../../../../../../../ni:name='_public_'";
            type apply-sid-mode;
            default "per-instance";
            description
              "Configure a SID allocation mode of SRv6 for BGP.";
          }
        }  // list locator
      }  // container locators
    }

    augment /ni:network-instance/ni:instances/ni:instance/bgp:bgp/bgp:base-process/bgp:afs/bgp:af/bgp:ipv6-unicast {
      description "BGP SRv6 configuration.";
      container locators {
        when
          "../../../../../../ni:name='_public_'";
        description
          "List of locators used by segment-routing IPv6 for BGP.";
        list locator {
          key "name";
          description
            "Configure SRv6 locator.";
          leaf name {
            type leafref {
              path
                "/ni:network-instance/ni:instances/ni:instance/srv6:srv6/srv6:locators/srv6:locator/srv6:name";
            }
            description "Locator name.";
          }
        }  // list locator
      }  // container locators

      container locator-routes {
        when
          "../../../../../../ni:name='_public_'";
        description
          "List of locator routes.";
        list locator-route {
          key "locator-name";
          description
            "Configure a locator route in the BGP routing table.";
          leaf locator-name {
            type leafref {
              path
                "/ni:network-instance/ni:instances/ni:instance/srv6:srv6/srv6:locators/srv6:locator/srv6:name";
            }
            description
              "Referenced locator name.";
          }

          uses bgp:choice-policy-set {
            refine policy-type {
              description
                "Specify the route-policy or filter for route advertisement.";
            }
          }
        }  // list locator-route
      }  // container locator-routes
    }
  }  // module huawei-bgp-srv6