module packet-fields {

    yang-version 1;

    namespace
      "urn:ietf:params:xml:ns:yang:packet-fields";

    prefix packet-fields;

    import ietf-inet-types {
      prefix inet;
    }
    import ietf-yang-types {
      prefix yang;
    }

    revision "2014-06-25" {
      description
        "Initial version of packet fields used by access-lists";
    }


    grouping acl-transport-header-fields {
      description "Transport header fields";
      container source-port-range {
        description
          "inclusive range of source ports";
        leaf lower-port {
          type inet:port-number;
          mandatory true;
        }

        leaf upper-port {
          type inet:port-number;
        }
      }  // container source-port-range

      container destination-port-range {
        description
          "inclusive range of destination ports";
        leaf lower-port {
          type inet:port-number;
          mandatory true;
        }

        leaf upper-port {
          type inet:port-number;
        }
      }  // container destination-port-range
    }  // grouping acl-transport-header-fields

    grouping acl-ip-header-fields {
      description
        "Header fields common to ipv4 and ipv6";
      uses acl-transport-header-fields;

      leaf dscp {
        type inet:dscp;
      }

      leaf ip-protocol {
        type uint8;
      }
    }  // grouping acl-ip-header-fields

    grouping acl-ipv4-header-fields {
      description "fields in IPv4 header";
      leaf destination-ipv4-address {
        type inet:ipv4-prefix;
      }

      leaf source-ipv4-address {
        type inet:ipv4-prefix;
      }
    }  // grouping acl-ipv4-header-fields

    grouping acl-ipv6-header-fields {
      description "fields in IPv6 header";
      leaf destination-ipv6-address {
        type inet:ipv6-prefix;
      }

      leaf source-ipv6-address {
        type inet:ipv6-prefix;
      }

      leaf flow-label {
        type inet:ipv6-flow-label;
      }
    }  // grouping acl-ipv6-header-fields

    grouping acl-eth-header-fields {
      description
        "fields in ethernet header";
      leaf destination-mac-address {
        type yang:mac-address;
      }

      leaf destination-mac-address-mask {
        type yang:mac-address;
      }

      leaf source-mac-address {
        type yang:mac-address;
      }

      leaf source-mac-address-mask {
        type yang:mac-address;
      }
    }  // grouping acl-eth-header-fields

    grouping timerange {
      description
        "Define time range entries to restrict
the access. The time range is identified by a name
and then referenced by a function, so that those
time restrictions are imposed on the function itself.";
      container absolute {
        description
          "Absolute time and date that
the associated function starts
going into effect.";
        leaf start {
          type yang:date-and-time;
          description "Start time and date";
        }

        leaf end {
          type yang:date-and-time;
          description
            "Absolute end time and date";
        }

        leaf active {
          type boolean;
          default "true";
          description
            "Specify the associated function
active or inactive state when
starts going into effect";
        }
      }  // container absolute
    }  // grouping timerange

    grouping metadata {
      description
        "Fields associated with a packet but not in the header";
      leaf input-interface {
        type string;
        description
          "Packet was received on this interface";
      }

      uses timerange;
    }  // grouping metadata
  }  // module packet-fields