module ciena-mef-classifier {

    yang-version 1;

    namespace
      "urn:ciena:params:xml:ns:yang:ciena-pn::ciena-mef-classifier";

    prefix classifier;

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

    organization "Ciena Corporation";

    contact
      "Web URL: http://www.ciena.com/
E-mail:  yang@ciena.com
Postal:  7035 Ridge Road
	 Hanover, Maryland 21076
	 U.S.A.
Phone:   +1 800-921-1144
Fax:     +1 410-694-5750";

    description
      "This YANG module defines Ciena's management data definition for the
management of a classifier.";

    revision "2017-05-16" {
      description
        "Various updates to classifers since first revision
Added description for containers, leafs, lists, enums
and choices.";
      reference
        "RFC 6020: YANG - A Data Modeling Language for
        the Network Configuration Protocol (NETCONF).
        No specific reference; standard not available.";

    }

    revision "2014-12-19" {
      description
        "First revision of MEF based classifier";
      reference
        "RFC 6020: YANG - A Data Modeling Language for
        the Network Configuration Protocol (NETCONF).
        No specific reference; standard not available.";

    }


    typedef classifier-ref {
      type leafref {
        path "/classifier:classifiers/classifier:classifier/classifier:name";
      }
      description
        "This type is used by data models that need to reference
configured classifier list.";
    }

    feature filter-parameters-type {
      description
        "Allows for configuration of filter parameters inline.";
    }

    identity filter-param-type {
      description
        "This is the base identity of the filter-param-type.";
    }

    identity vtag-stack {
      base filter-param-type;
      description "Classify on vtag stack.";
    }

    identity mpls-label {
      base filter-param-type;
      description "Classify on mpls label.";
    }

    identity dscp {
      base filter-param-type;
      description "Classify on dscp.";
    }

    identity source-ip {
      base filter-param-type;
      description "Classify on source ip.";
    }

    identity destination-ip {
      base filter-param-type;
      description
        "Classify on destination ip.";
    }

    identity l4-destination-port {
      base filter-param-type;
      description
        "Classify on L4 destination port.";
    }

    identity l4-source-port {
      base filter-param-type;
      description
        "Classify on L4 source port.";
    }

    identity ip-protocol {
      base filter-param-type;
      description "Classify on ip protocol.";
    }

    identity base-etype {
      base filter-param-type;
      description
        "Classify on base ether type.";
    }

    identity any {
      base filter-param-type;
      description "Classify on any traffic.";
    }

    feature vtag-stack-feature {
      description
        "Allows for configuration of vtag stack type inline.";
    }

    identity vtag-stack-type {
      description
        "This is the base identity for vtag stack.";
    }

    identity untagged {
      base vtag-stack-type;
      description "Classify on untagged.";
    }

    identity l2cp {
      base vtag-stack-type;
      description "Classify on L2CP.";
    }

    identity tagged {
      base vtag-stack-type;
      description "Classify on tagged.";
    }

    identity ip-fragment {
      base filter-param-type;
      description "Classify on ip fragment.";
    }

    identity l4-application {
      base filter-param-type;
      description
        "Classify on L4 application.";
    }

    identity tcp-flags {
      base filter-param-type;
      description "Classify on tcp flags.";
    }

    identity l4-dst-protocol {
      base filter-param-type;
      description
        "Classify on l4 destination protocol.";
    }

    identity source-mac {
      base filter-param-type;
      description "Classify on source mac.";
    }

    identity destination-mac {
      base filter-param-type;
      description
        "Classify on destination mac.";
    }

    container classifiers {
      description
        "Configuration data for classifiers.";
      list classifier {
        key "name";
        ordered-by user;
        description
          "This defines the list of classifiers.";
        leaf name {
          type string;
          description
            "A unique name for the classifier.";
        }

        leaf filter-operation {
          type enumeration {
            enum "match-all" {
              value 0;
              description
                "Classify if all configured filter entry matches.";
            }
            enum "match-any" {
              value 1;
              description
                "Classify if any configured filter entry matches.";
            }
          }
          description
            "Indicates the filter operation of the classifier.";
        }

        list filter-entry {
          key "filter-parameter";
          ordered-by user;
          description
            "Indicates the list of filter entries for this classifier.";
          leaf filter-parameter {
            type identityref {
              base filter-param-type;
            }
            description
              "Indicates which filter parameter is used by this filter entry";
          }

          leaf logical-not {
            type boolean;
            default "false";
            description
              "Opposite of what is specified in the
filter-parameters. If the filter-parameter
specifies a tpid as tpid-8100, then anything
other than tpid-8100 is considered an acceptable
packet.";
          }

          choice filter-parameters {
            description
              "Indicates the choice of filter parameters used in a single classifier.";
            choice vtag-stack-type {
              description
                "This represents the choice of vtag stack type in a single classifier.";
              leaf untagged-exclude-priority-tagged {
                type boolean;
                description
                  "Classification on untagged frames excluding priority tagged frames.";
              }
              leaf l2cp-exclude-priority-tagged {
                type boolean;
                description
                  "Classification on L2CP frames excluding priority tagged frames.";
              }
              list vtags {
                key "tag";
                description
                  "This represents the list of vtags.";
                leaf tag {
                  type uint8;
                  description
                    "'1' represents outer most tag, '2' next outer most, etc.";
                }

                leaf tpid {
                  type enumeration {
                    enum "tpid-8100" {
                      value 0;
                      description
                        "Indicates value of VLAN tag TPID to be 0x8100.";
                    }
                    enum "tpid-88a8" {
                      value 1;
                      description
                        "Indicates value of VLAN tag TPID to be 0x88a8.";
                    }
                    enum "tpid-9100" {
                      value 2;
                      description
                        "Indicates value of VLAN tag TPID to be 0x9100.";
                    }
                  }
                  description
                    "This leaf represents the value of VLAN tag TPID.";
                }

                leaf pcp {
                  type uint8 {
                    range "0..7";
                  }
                  description
                    "This leaf represents the value of PCP in a single classifier.";
                }

                leaf pcp-mask {
                  type uint8 {
                    range "1..7";
                  }
                  description
                    "Allow PCP values to be optionally coupled with a mask in a single classifier.";
                }

                leaf dei {
                  type enumeration {
                    enum "discard-eligible" {
                      value 0;
                      description
                        "Indicates DEI bit is true i.e. set to 1.";
                    }
                    enum
                      "not-discard-eligible" {
                      value 1;
                      description
                        "Indicates DEI bit is false i.e. set to 0.";
                    }
                  }
                  description
                    "Discard Eligibility Indication.";
                }

                leaf vlan-id {
                  type uint16 {
                    range "1..4094";
                  }
                  description
                    "Represents a IEEE 802.1Q VLAN-ID.";
                }

                leaf vlan-id-max {
                  type uint16 {
                    range "1..4094";
                  }
                  description
                    "The maximum value of VLAN ID for ranged VLAN-ID values. Mutually exclusive to vlan-id-mask.";
                }

                leaf vlan-id-mask {
                  type uint16 {
                    range "1..4095";
                  }
                  description
                    "Allow VLAN ID values to be optionally coupled with a mask. Mutually exclusive to vlan-id-max.";
                }
              }  // list vtags
            }  // choice vtag-stack-type
            list mpls-labels {
              key "label";
              description
                "This represents the list of mpls labels.";
              leaf label {
                type uint32;
                description
                  "An administratively assigned value, which may be used
to identify the mpls label.";
              }

              choice labels {
                description
                  "This represents the choice of labels to be configured.";
                case any {
                  description
                    "Accept any label.";
                  leaf label-any {
                    type empty;
                    description
                      "Represents any label.";
                  }
                }  // case any
                leaf mpls-label {
                  type uint32;
                  description
                    "Indicates the value of mpls label.";
                }
              }  // choice labels

              choice tc {
                description
                  "This represents the choice of TCs to be configured.";
                case any {
                  description
                    "Accept any tc value.";
                  leaf tc-any {
                    type empty;
                    description
                      "Represents any tc value.";
                  }
                }  // case any
                leaf tc-value {
                  type uint8;
                  description
                    "Indicates the value of tc.";
                }
              }  // choice tc
            }  // list mpls-labels

            case dscp {
              leaf dscp-min {
                type inet:dscp;
                description
                  "The minimum value of DSCP.";
              }

              leaf dscp-max {
                type inet:dscp;
                description
                  "The maximum value of DSCP for ranged DSCP values in a single classifier. Mutually exclusive to dscp-mask.";
              }

              leaf dscp-mask {
                type inet:dscp;
                description
                  "Allow DSCP values to be optionally coupled with a mask in a single classifier. Mutually exclusive to dscp-max.";
              }
            }  // case dscp

            case source-ip {
              description
                "Classification on IP source-address (v4/v6) and masking.";
              leaf source-address {
                type inet:ip-prefix;
                description
                  "Source IP address (v4/v6) with mask.";
              }
            }  // case source-ip

            case destination-ip {
              description
                "Classification on IP destination-address (v4/v6) and masking.";
              leaf destination-address {
                type inet:ip-prefix;
                description
                  "Destination IP address (v4/v6) with mask.";
              }
            }  // case destination-ip

            case l4-source-port {
              leaf source-min {
                type inet:port-number;
                description
                  "L4 source port minimum value.";
              }

              leaf source-max {
                type inet:port-number;
                description
                  "L4 source port maximum value.";
              }
            }  // case l4-source-port

            case l4-destination-port {
              leaf destination-min {
                type inet:port-number;
                description
                  "L4 destination port minimum value.";
              }

              leaf destination-max {
                type inet:port-number;
                description
                  "L4 destination port maximum value.";
              }
            }  // case l4-destination-port

            case ip-protocol {
              leaf min-prot {
                type uint16;
                description
                  "IP protocol minimum value.";
              }

              leaf max-prot {
                type uint16;
                description
                  "IP protocol maximum value.";
              }
            }  // case ip-protocol
            leaf base-ethertype {
              type uint16;
              description
                "Indicates the base ether type value.";
            }
            leaf any {
              type empty;
              description
                "Accept any classification. Wide-Open classifier";
            }
            leaf ip-fragment {
              type boolean;
              description
                "IP-fragment bit true/false";
            }
            leaf l4-application {
              type enumeration {
                enum "twamp" {
                  value 0;
                  description "twamp.";
                }
              }
              description
                "This leaf represents the L4 application. Mutually exclusive with L4 destination port";
            }
            leaf l4-dst-protocol {
              type enumeration {
                enum "bootp-client" {
                  value 0;
                  description
                    "bootp-client.";
                }
                enum "bootp-server" {
                  value 1;
                  description
                    "bootp-server.";
                }
                enum "bgp" {
                  value 2;
                  description "bgp.";
                }
                enum "dhcpv6-client" {
                  value 3;
                  description
                    "dhcpv6 client.";
                }
                enum "dhcpv6-server" {
                  value 4;
                  description
                    "dhcpv6 server.";
                }
                enum "dhcp-client" {
                  value 5;
                  description "dhcp client.";
                }
                enum "dhcp-server" {
                  value 6;
                  description "dhcp server.";
                }
                enum "dns" {
                  value 7;
                  description "dns.";
                }
                enum "ftp" {
                  value 8;
                  description "ftp.";
                }
                enum "http" {
                  value 9;
                  description "http.";
                }
                enum "ldp" {
                  value 10;
                  description "ldp.";
                }
                enum "ntp" {
                  value 11;
                  description "ntp.";
                }
                enum "olsr" {
                  value 12;
                  description "olsr.";
                }
                enum "rip" {
                  value 13;
                  description "rip.";
                }
                enum "rpc" {
                  value 14;
                  description "rpc.";
                }
                enum "snmp" {
                  value 15;
                  description "snmp.";
                }
                enum "snmptrap" {
                  value 16;
                  description "snmp trap.";
                }
                enum "ssh" {
                  value 17;
                  description "ssh.";
                }
                enum "syslog" {
                  value 18;
                  description "syslog.";
                }
                enum "tacacs" {
                  value 19;
                  description "tacacs.";
                }
                enum "telnet" {
                  value 20;
                  description "telnet.";
                }
                enum "tftp" {
                  value 21;
                  description "tftp.";
                }
                enum "twampctl" {
                  value 22;
                  description "twampctl.";
                }
              }
              description "L4 protocol.";
            }

            case tcp-flags {
              description "TCP flags.";
              leaf syn {
                type boolean;
                description
                  "Sets the TCP Flag SYN true/false.";
              }

              leaf ack {
                type boolean;
                description
                  "Sets the TCP Flag ACK true/false.";
              }

              leaf rst {
                type boolean;
                description
                  "Sets the TCP Flag RST true/false.";
              }

              leaf urg {
                type boolean;
                description
                  "Sets the TCP Flag URG true/false.";
              }

              leaf psh {
                type boolean;
                description
                  "Sets the TCP Flag PSH true/false.";
              }

              leaf fin {
                type boolean;
                description
                  "Sets the TCP Flag FIN true/false.";
              }
            }  // case tcp-flags

            case source-mac {
              leaf source-mac {
                type yt:mac-address;
                description
                  "Sets the source MAC address.";
              }

              leaf source-mac-mask {
                type yt:mac-address;
                description
                  "Sets the source MAC address MASK.";
              }
            }  // case source-mac

            case destination-mac {
              leaf destination-mac {
                type yt:mac-address;
                description
                  "Sets the destination MAC address.";
              }

              leaf destination-mac-mask {
                type yt:mac-address;
                description
                  "Sets the destination MAC address mask.";
              }
            }  // case destination-mac
          }  // choice filter-parameters
        }  // list filter-entry
      }  // list classifier
    }  // container classifiers
  }  // module ciena-mef-classifier