module bbf-ethernet-performance-management {

    yang-version 1.1;

    namespace
      "urn:bbf:yang:bbf-ethernet-performance-management";

    prefix bbf-eth-pm;

    import bbf-yang-types {
      prefix bbf-yang;
    }
    import ietf-interfaces {
      prefix if;
    }
    import bbf-interfaces-performance-management {
      prefix bbf-if-pm;
    }
    import iana-if-type {
      prefix ianaift;
    }

    organization
      "Broadband Forum <https://www.broadband-forum.org>
     Common YANG Work Area";

    contact
      "Comments or questions about this Broadband Forum YANG module
     should be directed to <mailto:help@broadband-forum.org>.

     Editor:      Nick Hancock, ADTRAN

     Editor:      Ludwig Pauwels, Nokia

     PS Leader:   Joey Boyd, ADTRAN

     WA Director: Joey Boyd, ADTRAN

     WA Director: Sven Ooghe, Nokia";

    description
      "This module contains a collection of YANG definitions for
     supporting the Broadband Forum requirements on Ethernet interface
     management as applicable to access network equipment. As such,
     this module is specific to access network equipment (e.g.,
     BBF-specified Access Nodes and FTTdp DPUs).

     Specifically, this module augments
     bbf-interface-performance-management with Ethernet specific
     counters.

     Copyright (c) 2017-2022, Broadband Forum

     Redistribution and use in source and binary forms, with or
     without modification, are permitted provided that the following
     conditions are met:

     1. Redistributions of source code must retain the above copyright
        notice, this list of conditions and the following disclaimer.

     2. Redistributions in binary form must reproduce the above
        copyright notice, this list of conditions and the following
        disclaimer in the documentation and/or other materials
        provided with the distribution.

     3. Neither the name of the copyright holder nor the names of its
        contributors may be used to endorse or promote products
        derived from this software without specific prior written
        permission.

     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
     CONTRIBUTORS \"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES,
     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
     CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

     The above license is used as a license under copyright only.
     Please reference the Forum IPR Policy for patent licensing terms
     <https://www.broadband-forum.org/ipr-policy>.

     Any moral rights which are necessary to exercise under the above
     license grant are also deemed granted under this license.

     This version of this YANG module is part of TR-383a5; see
     the TR itself for full legal notices.";

    revision "2022-03-01" {
      description
        "Amendment 5.
       * Approval Date:    2022-03-01.
       * Publication Date: 2022-03-01.";
      reference
        "TR-383a5: Common YANG Modules
        	  <https://www.broadband-forum.org/technical/download/
        		   TR-383_Amendment-5.pdf>";

    }

    revision "2021-06-02" {
      description
        "Amendment 4.
       * Approval Date:    2021-06-02.
       * Publication Date: 2021-06-02.";
      reference
        "TR-383a4: Common YANG Modules
        	  <https://www.broadband-forum.org/technical/download/
        		   TR-383_Amendment-4.pdf>";

    }

    revision "2017-05-08" {
      description
        "Initial revision.
       * Approval Date:    see revision date above.
       * Publication Date: 2017-06-02.";
      reference
        "TR-383: Common YANG Modules
        	<https://www.broadband-forum.org/technical/download/
        		 TR-383.pdf>";

    }


    feature in-undersize-pkts {
      description
        "Indicates support for reporting the number of received
       undersized frames.";
    }

    grouping eth-interface-performance-counters {
      description
        "Counters associated with current and historical 15 minute and
       24 hour performance counters";
      leaf in-pkts-errors-fcs {
        type bbf-yang:performance-counter64;
        description
          "A count of frames received on a particular interface that are
         an integral number of octets in length but do not pass the
         FCS check. This count does not include frames received with
         frame-too-long or frame-too-short error.

         The count represented by an instance of this leaf is
         incremented when the frameCheckError status is returned by
         the MAC service to the LLC (or other MAC user). Received
         frames for which multiple error conditions pertain are,
         according to the conventions of IEEE 802.3 Layer Management,
         counted exclusively according to the error status presented
         to the LLC.

         Note: Coding errors detected by the Physical Layer for speeds
         above 10 Mb/s will cause the frame to fail the FCS check.
         Discontinuities in the value of this counter can occur at
         re-initialization of the management system, and at other
         times as indicated by the value of the interface's
         'statistics/discontinuity-time'.

         A frame that is counted by an instance of this leaf is also
         counted by the corresponding instance of
         'in-errors' leaf.";
        reference
          "IEEE 802.3, 30.3.1.1.6, aFrameCheckSequenceErrors";

      }

      leaf in-giant-pkts {
        type bbf-yang:performance-counter64;
        description
          "A count of frames received on a particular interface that
         exceed the maximum permitted frame size.

         The count represented by an instance of this leaf is
         incremented when the frameTooLong status is returned by the
         MAC service to the LLC (or other MAC user). Received frames
         for which multiple error conditions pertain are, according to
         the conventions of IEEE 802.3 Layer Management, counted
         exclusively according to the error status presented to the
         LLC.

         Discontinuities in the value of this counter can occur at
         re-initialization of the management system, and at other
         times as indicated by the value of the interface's
         'statistics/discontinuity-time'.";
        reference
          "IEEE 802.3, 30.3.1.1.25, aFrameTooLongErrors";

      }

      leaf in-undersize-pkts {
        if-feature bbf-eth-pm:in-undersize-pkts;
        type bbf-yang:performance-counter64;
        description
          "A count of frames received on a particular Ethernet(-like)
         interface that are less than 64 bytes in length, and
         are discarded.

         This counter is incremented regardless of whether the
         frame passes the FCS check.

         Discontinuities in the value of this counter can occur at
         re-initialization of the management system, and at other
         times as indicated by the value of the interface's
         'statistics/discontinuity-time'.";
        reference
          "RFC 2819, etherStatsUndersizePkts";

      }

      leaf in-errors-mac-internal {
        type bbf-yang:performance-counter64;
        description
          "A count of frames for which reception on a particular
         IEEE 802.3 Ethernet interface fails due to an internal
         MAC sublayer receive error.

         A frame is only counted by an instance of this leaf if it
         is not counted by the corresponding instance of either the
         'in-giant-pkts' leaf, the 'in-pkts-errors-alignment-fcs'
         leaf, or the 'in-pkts-errors-fcs' leaf.
         The precise meaning of the count represented by an instance
         of this leaf is implementation-specific.

         In particular, an instance of this leaf may represent a
         count of receive errors on a particular IEEE 802.3
         Ethernet interface that are not otherwise counted.

         Discontinuities in the value of this counter can occur at
         re-initialization of the management system, and at other
         times as indicated by the value of the interface's
         'statistics/discontinuity-time' ";
        reference
          "IEEE 802.3, 30.3.1.1.15, aFramesLostDueToIntMACRcvError";

      }

      leaf out-errors-mac-internal {
        type bbf-yang:performance-counter64;
        description
          "A count of frames for which transmission on a particular IEEE
         802.3 Ethernet interface fails due to an internal MAC
         sublayer transmit error.

         A frame is only counted by an instance of this leaf if it
         is not counted by the corresponding instance of either the
         'out-collisions-late' leaf, the
         'out-pkts-collisions-excessive' leaf, or the
         'out-errors-carrier-sense' leaf. The precise meaning of the
         count represented by an instance of this leaf is
         implementation-specific.

         In particular, an instance of this leaf may represent a
         count of transmission errors on a particular IEEE 802.3
         Ethernet interface that are not otherwise counted.

         Discontinuities in the value of this counter can occur at
         re-initialization of the management system, and at other
         times as indicated by the value of the interface's
         'statistics/discontinuity-time'.";
        reference
          "IEEE 802.3, 30.3.1.1.12,
          aFramesLostDueToIntMACXmitError";

      }
    }  // grouping eth-interface-performance-counters

    augment /if:interfaces-state/if:interface/bbf-if-pm:performance/bbf-if-pm:intervals-15min/bbf-if-pm:current {
      when
        "derived-from-or-self(../../../if:type,
                               'ianaift:ethernetCsmacd')" {
        description
          "Only applicable to Ethernet interfaces.";
      }
      description
        "Augment the current 15 minute interface performance counts
       with Ethernet specific attributes.";
      container ethernet {
        description
          "Current 15 minute Ethernet performance counters.";
        uses eth-interface-performance-counters;
      }  // container ethernet
    }

    augment /if:interfaces-state/if:interface/bbf-if-pm:performance/bbf-if-pm:intervals-15min/bbf-if-pm:history {
      when
        "derived-from-or-self(../../../if:type,
                               'ianaift:ethernetCsmacd')" {
        description
          "Only applicable to Ethernet interfaces.";
      }
      description
        "Augment the historic 15 minute interface performance counts
       with Ethernet specific attributes.";
      container ethernet {
        description
          "Historic 15 minute Ethernet performance counters.";
        uses eth-interface-performance-counters;
      }  // container ethernet
    }

    augment /if:interfaces-state/if:interface/bbf-if-pm:performance/bbf-if-pm:intervals-24hr/bbf-if-pm:current {
      when
        "derived-from-or-self(../../../if:type,
                               'ianaift:ethernetCsmacd')" {
        description
          "Only applicable to Ethernet interfaces.";
      }
      if-feature bbf-if-pm:performance-24hr;
      description
        "Augment the current 24 hour interface performance counts with
       Ethernet specific attributes.";
      container ethernet {
        description
          "Current 24 hour Ethernet performance counters.";
        uses eth-interface-performance-counters;
      }  // container ethernet
    }

    augment /if:interfaces-state/if:interface/bbf-if-pm:performance/bbf-if-pm:intervals-24hr/bbf-if-pm:history {
      when
        "derived-from-or-self(../../../if:type,
                               'ianaift:ethernetCsmacd')" {
        description
          "Only applicable to Ethernet interfaces.";
      }
      if-feature bbf-if-pm:performance-24hr;
      description
        "Augment the historic 24 hour interface performance counts with
       Ethernet specific attributes.";
      container ethernet {
        description
          "Historic 24 hour Ethernet performance counters.";
        uses eth-interface-performance-counters;
      }  // container ethernet
    }
  }  // module bbf-ethernet-performance-management