module ietf-packet-fields {

    yang-version 1.1;

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

    prefix packet-fields;

    import ietf-inet-types {
      prefix inet;
      reference
        "RFC 6991 - Common YANG Data Types.";


    }
    import ietf-yang-types {
      prefix yang;
      reference
        "RFC 6991 - Common YANG Data Types.";


    }
    import ietf-ethertypes {
      prefix eth;
      reference
        "RFC 8519 - YANG Data Model for Network Access Control
        	   Lists (ACLs).";


    }

    organization
      "IETF NETMOD (Network Modeling) Working Group.";

    contact
      "WG Web:  <https://datatracker.ietf.org/wg/netmod/>
WG List: netmod@ietf.org

Editor: Mahesh Jethanandani
	mjethanandani@gmail.com
Editor: Lisa Huang
	huangyi_99@yahoo.com
Editor: Sonal Agarwal
	sagarwal12@gmail.com
Editor: Dana Blair
	dana@blairhome.com";

    description
      "This YANG module defines groupings that are used by
the ietf-access-control-list YANG module.  Their usage
is not limited to ietf-access-control-list and can be
used anywhere as applicable.

Copyright (c) 2019 IETF Trust and the persons identified as
the document authors.  All rights reserved.

Redistribution and use in source and binary forms, with or
without modification, is permitted pursuant to, and subject
to the license terms contained in, the Simplified BSD
License set forth in Section 4.c of the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info).

This version of this YANG module is part of RFC 8519; see
the RFC itself for full legal notices.";

    revision "2019-03-04" {
      description "Initial version.";
      reference
        "RFC 8519: YANG Data Model for Network Access Control
        	  Lists (ACLs).";

    }


    typedef operator {
      type enumeration {
        enum "lte" {
          value 0;
          description
            "Less than or equal to.";
        }
        enum "gte" {
          value 1;
          description
            "Greater than or equal to.";
        }
        enum "eq" {
          value 2;
          description "Equal to.";
        }
        enum "neq" {
          value 3;
          description "Not equal to.";
        }
      }
      description
        "The source and destination port range definitions
can be further qualified using an operator.  An
operator is needed only if the lower-port is specified
and the upper-port is not specified.  The operator
therefore further qualifies the lower-port only.";
    }
  }  // module ietf-packet-fields