module huawei-oam-efm-bfd {

    yang-version 1;

    namespace
      "urn:huawei:yang:huawei-oam-efm-bfd";

    prefix oam-efm-bfd;

    import huawei-extension {
      prefix ext;
    }
    import huawei-oammgr {
      prefix oammgr;
    }
    import huawei-bfd {
      prefix bfd;
    }
    import huawei-ifm {
      prefix ifm;
    }
    import huawei-efm {
      prefix efm;
    }
    import huawei-bfd-static-mpls-te {
      prefix bfd-static-mpls-te;
    }
    import huawei-bfd-static-vpws {
      prefix bfd-static-vpws;
    }

    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
      "Configure the operation, administration and maintenance (OAM) association function.";

    revision "2020-09-18" {
      description "Initial revision.";
      reference
        "Huawei private.";

    }

    ext:task-name "oammgr";

    typedef efm-bind-bfd-type {
      type enumeration {
        enum "EFM-BFD" {
          value 1;
          description
            "Type that EFM transfers fault information to BFD.";
        }
        enum "BFD-EFM" {
          value 2;
          description
            "Type that BFD transfers fault information to EFM.";
        }
      }
      description "Binding type.";
    }

    augment /oammgr:oammgr {
      description
        "Configure the operation, administration and maintenance (OAM) association function.";
      container efm-bind-bfds {
        description
          "List of associations between EFM and BFD.";
        list efm-bind-bfd {
          key "if-name bfd-session-id bind-type";
          unique "if-name bind-type";
          unique "bfd-session-id bind-type";
          description
            "Configure an instance of an association between EFM and BFD.";
          leaf if-name {
            type leafref {
              path
                "/ifm:ifm/ifm:interfaces/ifm:interface/ifm:name";
            }
            must
              "/ifm:ifm/ifm:interfaces/ifm:interface[ifm:name=current()]/efm:efm/efm:session/efm:state='enable'";
            description
              "Configure the name of interface which the EFM instance bound.";
          }

          leaf bfd-session-id {
            type uint32 {
              range "1..16384";
            }
            must
              "/bfd:bfd/bfd:sessions/bfd:session[bfd:local-discriminator-multicast-ipv4=current()] or /bfd:bfd/bfd:sessions/bfd:session[bfd:local-discriminator=current()] or /bfd:bfd/bfd:sessions/bfd:session[bfd:local-discriminator-static-ldp-lsp=current()] or /bfd:bfd/bfd:sessions/bfd:session[bfd-static-mpls-te:local-discriminator-static-te-lsp=current()] or /bfd:bfd/bfd:sessions/bfd:session[bfd-static-mpls-te:local-discriminator-static-te-tunnel=current()] or /bfd:bfd/bfd:sessions/bfd:session[bfd-static-vpws:local-discriminator-static-vll-pw=current()]";
            description
              "Configure the local discriminator of a BFD session.";
          }

          leaf bind-type {
            type efm-bind-bfd-type;
            description
              "Configure a binding type.";
          }
        }  // list efm-bind-bfd
      }  // container efm-bind-bfds
    }
  }  // module huawei-oam-efm-bfd