module openconfig-macsec {

    yang-version 1;

    namespace
      "http://openconfig.net/yang/macsec";

    prefix oc-macsec;

    import openconfig-extensions {
      prefix oc-ext;
    }
    import openconfig-interfaces {
      prefix oc-if;
    }
    import openconfig-macsec-types {
      prefix macsec-types;
    }
    import openconfig-yang-types {
      prefix oc-yang;
    }

    organization "OpenConfig working group";

    contact
      "Openconfig working group
     www.openconfig.net";

    description
      "This module defines configuration and state data for
     MACsec IEEE Std 802.1AE-2018.";

    revision "2019-07-01" {
      description "Initial public revision";
      reference
        "0.1.0";

    }

    oc-ext:openconfig-version "0.1.0";
    oc-ext:regexp-posix;
    oc-ext:catalog-organization "openconfig";
    oc-ext:origin "openconfig";

    grouping macsec-mka-key-config {
      description "MKA Key config grouping";
      leaf id {
        type oc-yang:hex-string {
          length "1..64";
        }
        description
          "Key identifier is used as the
         Connectivity Association Key name (CKN)";
      }

      leaf key-clear-text {
        type string;
        description
          "The key, used for signing and encrypting. Supplied as a clear text
         string. When read, also returned as clear text string.";
      }

      leaf cryptographic-algorithm {
        type enumeration {
          enum "AES_128_CMAC" {
            value 0;
          }
          enum "AES_256_CMAC" {
            value 1;
          }
        }
        description
          "MKA Cryptographic authentication algorithm to use";
      }

      leaf valid-date-time {
        type union {
          type oc-yang:date-and-time;
          type enumeration {
            enum "VALID_IMMEDIATELY" {
              value 0;
              description
                "Key is valid immediately";
            }
          }
        }
        default 'VALID_IMMEDIATELY';
        description
          "Date and time the key starts being valid according to local date and
         time configuration.";
      }

      leaf expiration-date-time {
        type union {
          type oc-yang:date-and-time;
          type enumeration {
            enum "NO_EXPIRATION" {
              value 0;
              description
                "Key does not expire";
            }
          }
        }
        default 'NO_EXPIRATION';
        description
          "Key date and time expiration according to local date and time
         configuration.";
      }
    }  // grouping macsec-mka-key-config

    grouping macsec-mka-key-top {
      description
        "MKA Key top level grouping";
      container mka-keys {
        description
          "Enclosing container for the list of MKA keys";
        list mka-key {
          key "id";
          description "List of MKA keys";
          leaf id {
            type leafref {
              path "../config/id";
            }
            description
              "Reference to the MKA key id";
          }

          container config {
            description
              "Configuration of MKA key";
            uses macsec-mka-key-config;
          }  // container config

          container state {
            config false;
            description
              "Operational state data for MKA key";
            uses macsec-mka-key-config;
          }  // container state
        }  // list mka-key
      }  // container mka-keys
    }  // grouping macsec-mka-key-top

    grouping macsec-mka-key-chain-config {
      description
        "MKA Key chain config grouping";
      leaf name {
        type string;
        description "MKA Key-chain name";
      }
    }  // grouping macsec-mka-key-chain-config

    grouping macsec-mka-key-chain-top {
      description
        "MKA key chain top level grouping";
      container key-chains {
        description
          "Enclosing container for the MKA key chains";
        list key-chain {
          key "name";
          description "MKA Key chain name";
          leaf name {
            type leafref {
              path "../config/name";
            }
            description
              "Reference to the MKA Key chain name";
          }

          container config {
            description
              "Configuration of the MKA key chain";
            uses macsec-mka-key-chain-config;
          }  // container config

          container state {
            config false;
            description
              "Operational state data for MKA key chain";
            uses macsec-mka-key-chain-config;
          }  // container state

          uses macsec-mka-key-top;
        }  // list key-chain
      }  // container key-chains
    }  // grouping macsec-mka-key-chain-top

    grouping macsec-mka-interface-config {
      description
        "MKA interface config grouping";
      leaf mka-policy {
        type leafref {
          path
            "/macsec/mka/policies/policy/name";
        }
        description
          "Apply MKA policy on the interface";
      }

      leaf key-chain {
        type leafref {
          path
            "/macsec/mka/key-chains/key-chain/name";
        }
        description
          "Configure Key Chain name";
      }
    }  // grouping macsec-mka-interface-config

    grouping macsec-mka-interface-counters {
      description
        "MKA interface state grouping";
      leaf in-mkpdu {
        type oc-yang:counter64;
        description
          "Validated MKPDU received count";
      }

      leaf in-sak-mkpdu {
        type oc-yang:counter64;
        description
          "Validated MKPDU received SAK count";
      }

      leaf in-cak-mkpdu {
        type oc-yang:counter64;
        description
          "Validated MKPDU received CAK count";
      }

      leaf out-mkpdu {
        type oc-yang:counter64;
        description "MKPDU sent count";
      }

      leaf out-sak-mkpdu {
        type oc-yang:counter64;
        description "MKPDU SAK sent count";
      }

      leaf out-cak-mkpdu {
        type oc-yang:counter64;
        description "MKPDU CAK sent count";
      }
    }  // grouping macsec-mka-interface-counters

    grouping macsec-mka-interface-state {
      description
        "MKA interface state grouping";
      container counters {
        description "MKA interface counters";
        uses macsec-mka-interface-counters;
      }  // container counters
    }  // grouping macsec-mka-interface-state

    grouping macsec-mka-interface-top {
      description
        "MKA interface top level grouping";
      container mka {
        description
          "Enclosing container for the MKA interface";
        container config {
          description
            "Configuration data for MKA interface";
          uses macsec-mka-interface-config;
        }  // container config

        container state {
          config false;
          description
            "Operational state data for MKA interface";
          uses macsec-mka-interface-config;

          uses macsec-mka-interface-state;
        }  // container state
      }  // container mka
    }  // grouping macsec-mka-interface-top

    grouping macsec-interface-config {
      description
        "Media Access Control Security (MACsec) config grouping";
      leaf name {
        type oc-if:base-interface-ref;
        description
          "Reference to the MACsec Ethernet interface";
      }

      leaf enable {
        type boolean;
        default "false";
        description
          "Enable MACsec on an interface";
      }

      leaf replay-protection {
        type uint16;
        default "0";
        description
          "MACsec window size, as defined by the number of out-of-order frames
        that are accepted. A value of 0 means that frames are accepted only in
        the correct order.";
      }
    }  // grouping macsec-interface-config

    grouping macsec-scsa-tx-interface-stats {
      description
        "TX Secure Channel and Secure Association Information";
      leaf sci-tx {
        type oc-yang:hex-string {
          length "16";
        }
        description
          "Secure Channel Identifier.
         Every Transmit Channel is uniquely identified using this field.";
      }

      leaf sc-auth-only {
        type oc-yang:counter64;
        description
          "Secure Channel Authenticated only TX Packets counter.
         This counter reflects the number of authenticated only transmitted
         packets in a secure channel.";
      }

      leaf sc-encrypted {
        type oc-yang:counter64;
        description
          "Secure Channel Encrypted TX Packets counter.
         This counter reflects the number of encrypted and authenticated
         transmitted packets in a secure channel.";
      }

      leaf sa-auth-only {
        type oc-yang:counter64;
        description
          "Secure Association Authenticated only TX Packets counter.
         This counter reflects the number of authenticated only, transmitted
         packets in a secure association.";
      }

      leaf sa-encrypted {
        type oc-yang:counter64;
        description
          "Secure Association Encrypted TX Packets counter.
         This counter reflects the number of encrypted and authenticated
         transmitted packets in a secure association.";
      }
    }  // grouping macsec-scsa-tx-interface-stats

    grouping macsec-scsa-rx-interface-stats {
      description
        "RX Secure Channel and Secure Association Information";
      leaf sci-rx {
        type oc-yang:hex-string {
          length "16";
        }
        description
          "Secure Channel Identifier.
         Every Receive Channel is uniquely identified using this field.";
      }

      leaf sc-invalid {
        type oc-yang:counter64;
        description
          "Invalid Secure Channel RX Packets counter.
         This counter reflects the number of invalid received packets in a
         secure channel.";
      }

      leaf sc-valid {
        type oc-yang:counter64;
        description
          "Valid Secure Channel RX Packets counter.
         This counter reflects the number of valid received packets in a
         secure channel.";
      }

      leaf sa-invalid {
        type oc-yang:counter64;
        description
          "Invalid Secure Association RX Packets counter.
         This counter reflects the number of integrity check fails for received
         packets in a secure association.";
      }

      leaf sa-valid {
        type oc-yang:counter64;
        description
          "Secure Association Valid RX Packets counter.
         This counter reflects the number of packets in a secure association
         that passed integrity check.";
      }
    }  // grouping macsec-scsa-rx-interface-stats

    grouping macsec-interface-counters {
      description
        "MACsec interface state grouping";
      leaf tx-untagged-pkts {
        type oc-yang:counter64;
        description
          "MACsec interface level Transmit untagged Packets counter.
         This counter will increment if MACsec is enabled on interface and the
         outgoing packet is not tagged with MACsec header.";
      }

      leaf rx-untagged-pkts {
        type oc-yang:counter64;
        description
          "MACsec interface level Receive untagged Packets counter.
         This counter will increment if MACsec is enabled on interface and the
         incoming packet does not have MACsec tag.";
      }

      leaf rx-badtag-pkts {
        type oc-yang:counter64;
        description
          "MACsec interface level Receive Bad Tag Packets counter.
         This counter will increment if MACsec is enabled on interface and
         incoming packet has incorrect MACsec tag.";
      }

      leaf rx-unknownsci-pkts {
        type oc-yang:counter64;
        description
          "MACsec interface level Receive Unknown SCI Packets counter.
         This counter will increment if MACsec is enabled on the interface and
         SCI present in the MACsec tag of the incoming packet does not match any
         SCI present in ingress SCI table.";
      }

      leaf rx-nosci-pkts {
        type oc-yang:counter64;
        description
          "MACsec interface level Receive No SCI Packets counter.
         This counter will increment if MACsec is enabled on interface and
         incoming packet does not have SCI field in MACsec tag.";
      }
    }  // grouping macsec-interface-counters

    grouping macsec-scsa-interface-top {
      description
        "Secure channel and Secure Association Statistics";
      container scsa-tx {
        config false;
        description
          "Enclosing container for transmitted packets for Secure Channel and
         Secure Association";
        list scsa-tx {
          key "sci-tx";
          description
            "TX Secure Channel and Secure Association Statistics";
          leaf sci-tx {
            type leafref {
              path
                "../state/counters/sci-tx";
            }
            description
              "TX Secure Channel and Secure Association Statistics";
          }

          container state {
            description
              "State container for macsec-scsa-tx-interface-stats";
            container counters {
              description
                "Counters container for macsec-scsa-tx-interface-stats";
              uses macsec-scsa-tx-interface-stats;
            }  // container counters
          }  // container state
        }  // list scsa-tx
      }  // container scsa-tx

      container scsa-rx {
        config false;
        description
          "Enclosing container for received packets for Secure Channel and
         Secure Association";
        list scsa-rx {
          key "sci-rx";
          description
            "RX Secure Channel and Secure Association Statistics";
          leaf sci-rx {
            type leafref {
              path
                "../state/counters/sci-rx";
            }
            description
              "RX Secure Channel and Secure Association Statistics";
          }

          container state {
            description
              "State container for macsec-scsa-rx-interface-stats";
            container counters {
              description
                "Counters container for macsec-scsa-rx-interface-stats";
              uses macsec-scsa-rx-interface-stats;
            }  // container counters
          }  // container state
        }  // list scsa-rx
      }  // container scsa-rx
    }  // grouping macsec-scsa-interface-top

    grouping macsec-interface-top {
      description "Top-level grouping ";
      container interfaces {
        description
          "Enclosing container for the MACsec interfaces list";
        list interface {
          key "name";
          description
            "List of interfaces on which MACsec is enabled / available";
          leaf name {
            type leafref {
              path "../config/name";
            }
            description
              "Reference to the list key";
          }

          container config {
            description
              "Configuration data for MACsec on each interface";
            uses macsec-interface-config;
          }  // container config

          container state {
            config false;
            description
              "Operational state data ";
            uses macsec-interface-config;

            container counters {
              description
                "MACsec interface counters";
              uses macsec-interface-counters;
            }  // container counters
          }  // container state

          uses macsec-scsa-interface-top;

          uses macsec-mka-interface-top;
        }  // list interface
      }  // container interfaces
    }  // grouping macsec-interface-top

    grouping macsec-mka-policy-config {
      description
        "MKA policy config grouping";
      leaf name {
        type string;
        description
          "Name of the MKA policy.";
      }

      leaf key-server-priority {
        type uint8;
        default "16";
        description
          "Specifies the key server priority used by the MACsec Key Agreement
        (MKA) protocol to select the key server when MACsec is enabled using
        static connectivity association key (CAK) security mode. The switch with
        the lower priority-number is selected as the key server. If the
        priority-number is identical on both sides of a point-to-point link, the
        MKA protocol selects the device with the lower MAC address as the key
        server";
      }

      leaf-list macsec-cipher-suite {
        type macsec-types:macsec-cipher-suite;
        description
          "Set Cipher suite(s) for SAK derivation";
      }

      leaf confidentiality-offset {
        type macsec-types:confidentiality-offset;
        default "0_BYTES";
        description
          "The confidentiality offset specifies a number of octets in an Ethernet
         frame that are sent in unencrypted plain-text";
      }

      leaf delay-protection {
        type boolean;
        default "false";
        description
          "Traffic delayed longer than 2 seconds is rejected by the interfaces
         enabled with delay protection.";
      }

      leaf include-icv-indicator {
        type boolean;
        default "true";
        description
          "Generate and include an Integrity Check Value (ICV) field in the MKPDU.
         For compatibility with previous MACsec implementation that do not
         require an ICV";
      }

      leaf sak-rekey-interval {
        type uint32 {
          range "0 | 30..65535";
        }
        default "0";
        description
          "SAK Rekey interval in seconds. The default value is 0 where no rekey is
         performed.";
      }

      leaf sak-rekey-on-live-peer-loss {
        type boolean;
        default "false";
        description "Rekey on peer loss";
      }

      leaf use-updated-eth-header {
        type boolean;
        default "false";
        description
          "Use updated ethernet header for ICV calculation. In case the Ethernet
         frame headers change, use the updated headers to calculate the ICV.";
      }
    }  // grouping macsec-mka-policy-config

    grouping macsec-mka-global-counters {
      description
        "MKA global counters grouping";
      leaf out-mkpdu-errors {
        type oc-yang:counter64;
        description "MKPDU TX error count";
      }

      leaf in-mkpdu-icv-verification-errors {
        type oc-yang:counter64;
        description
          "MKPDU RX ICV verification error count";
      }

      leaf in-mkpdu-validation-errors {
        type oc-yang:counter64;
        description
          "MKPDU RX validation error count";
      }

      leaf in-mkpdu-bad-peer-errors {
        type oc-yang:counter64;
        description
          "MKPDU RX bad peer message number error count";
      }

      leaf in-mkpdu-peer-list-errors {
        type oc-yang:counter64;
        description
          "MKPDU RX non-recent peer list Message Number error count";
      }

      leaf sak-generation-errors {
        type oc-yang:counter64;
        description
          "MKA error SAK generation count";
      }

      leaf sak-hash-errors {
        type oc-yang:counter64;
        description
          "MKA error Hash Key generation count";
      }

      leaf sak-encryption-errors {
        type oc-yang:counter64;
        description
          "MKA error SAK encryption/wrap count";
      }

      leaf sak-decryption-errors {
        type oc-yang:counter64;
        description
          "MKA error SAK decryption/unwrap count";
      }

      leaf sak-cipher-mismatch-errors {
        type oc-yang:counter64;
        description
          "MKA error SAK cipher mismatch count";
      }
    }  // grouping macsec-mka-global-counters

    grouping macsec-mka-global-state {
      description
        "MKA global state grouping";
      container counters {
        description "MKA global counters";
        uses macsec-mka-global-counters;
      }  // container counters
    }  // grouping macsec-mka-global-state

    grouping macsec-mka-global-top {
      description
        "MKA global top level grouping";
      container state {
        config false;
        description
          "Operational state data for MKA";
        uses macsec-mka-global-state;
      }  // container state
    }  // grouping macsec-mka-global-top

    grouping macsec-mka-policy-top {
      description
        "MKA policy top level grouping";
      container policies {
        description
          "Enclosing container for the list of MKA policies";
        list policy {
          key "name";
          description "List of MKA policies";
          leaf name {
            type leafref {
              path "../config/name";
            }
            description
              "Reference to MKA policy name";
          }

          container config {
            description
              "Configuration of the MKA policy";
            uses macsec-mka-policy-config;
          }  // container config

          container state {
            config false;
            description
              "Operational state data for MKA policy";
            uses macsec-mka-policy-config;
          }  // container state
        }  // list policy
      }  // container policies
    }  // grouping macsec-mka-policy-top

    grouping macsec-mka-top {
      description "MKA top level grouping";
      container mka {
        description "The MKA";
        uses macsec-mka-policy-top;

        uses macsec-mka-key-chain-top;

        uses macsec-mka-global-top;
      }  // container mka
    }  // grouping macsec-mka-top

    grouping macsec-top {
      description
        "MACsec top level grouping";
      container macsec {
        description "The MACsec";
        uses macsec-mka-top;

        uses macsec-interface-top;
      }  // container macsec
    }  // grouping macsec-top

    uses macsec-top;
  }  // module openconfig-macsec