module bbf-qos-rate-control {

    yang-version 1.1;

    namespace
      "urn:bbf:yang:bbf-qos-rate-control";

    prefix bbf-qos-rc;

    import bbf-qos-classifiers {
      prefix bbf-qos-cls;
    }

    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 the management of
     Quality of Service (QoS) 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 classifiers to control frame
     rates.

     Copyright (c) 2017-2023, 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-383a7; see
     the TR itself for full legal notices.";

    revision "2023-12-15" {
      description
        "Amendment 7.
       * Approval Date:    2023-12-15.
       * Publication Date: 2023-12-15.";
      reference
        "TR-383a7: Common YANG Modules
        	  <https://www.broadband-forum.org/technical/download/
        		   TR-383_Amendment-7.pdf>";

    }

    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 "2020-10-13" {
      description
        "Amendment 3.
       * Approval Date:    2020-10-13.
       * Publication Date: 2020-10-13.";
      reference
        "TR-383a3: Common YANG Modules
        	  <https://www.broadband-forum.org/technical/download/
        		   TR-383_Amendment-3.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>";

    }


    identity rate-limit-frames {
      base bbf-qos-cls:action-type;
      description
        "The action-type identity indicating the system shall rate
       limit based on the number of frames.";
    }

    augment /bbf-qos-cls:classifiers/bbf-qos-cls:classifier-entry/bbf-qos-cls:classifier-action-entry-cfg/bbf-qos-cls:action-cfg-params {
      description
        "The QoS policy framework allows to configure a set of actions
       for frames with matching criteria.";
      case rate-limit-frames {
        description
          "The set of actions is extended with a possibility to rate
         limit the number of frames that match a classification. The
         rate limit specifies a limit for the number of frames.
         Frames that exceed this limit are discarded.";
        container rate-limit-frames {
          when
            "../bbf-qos-cls:action-type=
              'bbf-qos-rc:rate-limit-frames'" {
            description
              "Only applicable when the action-type is
             'rate-limit-frames'.";
          }
          description
            "The set of leaves that specify the allowed rate.";
          leaf rate {
            type uint32;
            units "frames per second";
            description
              "Limits the number of frames per second to this number.";
          }

          leaf burst-size {
            type uint32;
            units "frames";
            description
              "The burst-size together with the frame-rate define a
             mechanism to control a frame rate.";
          }
        }  // container rate-limit-frames
      }  // case rate-limit-frames
    }
  }  // module bbf-qos-rate-control