module frr-interface {
  yang-version 1.1;
  namespace "http://frrouting.org/yang/interface";
  prefix frr-interface;

  import frr-vrf {
    prefix frr-vrf;
  }

  import ietf-interfaces {
    prefix ietf-if;
  }

  import ietf-yang-types {
    prefix yang;
  }

  organization
    "FRRouting";
  contact
    "FRR Users List:       <mailto:frog@lists.frrouting.org>
     FRR Development List: <mailto:dev@lists.frrouting.org>";
  description
    "This module defines a model for managing FRR interfaces.

     Copyright 2020 FRRouting

     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.

     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.";

  revision 2020-02-05 {
    description
      "Added operational data";
  }
  revision 2019-09-09 {
    description
      "Added interface-ref typedef";
  }
  revision 2018-03-28 {
    description
      "Initial revision.";
  }

  identity other {
    base ietf-if:interface-type;
    description
      "Other type";
  }

  identity unknown {
    base ietf-if:interface-type;
    description
      "Unknown type";
  }

  identity ethernet {
    base ietf-if:interface-type;
    description
      "Ethernet type";
  }

  identity exper-ethernet {
    base ietf-if:interface-type;
    description
      "Experimental Ethernet type";
  }

  identity loopback {
    base ietf-if:interface-type;
    description
      "Loopback type";
  }

  identity pimreg {
    base ietf-if:interface-type;
    description
      "PIMSM Registration.";
  }

  identity ipip {
    base ietf-if:interface-type;
    description
      "IPIP Tunnel.";
  }

  identity ipip6 {
    base ietf-if:interface-type;
    description
      "IPIP6 Tunnel.";
  }

  identity ipgre {
    base ietf-if:interface-type;
    description
      "GRE over IP.";
  }

  typedef interface-ref {
    type leafref {
      path "/frr-interface:lib/frr-interface:interface/frr-interface:name";
      require-instance false;
    }
    description
      "Reference to an interface";
  }

  typedef if-flags-type {
    type enumeration {
      enum "up" {
        value 1;
        description
          "Active and ready to transfer packets.";
      }
      enum "broadcast" {
        value 2;
        description
          "Broadcast enabled.";
      }
      enum "debug" {
        value 3;
        description
          "Debug mode.";
      }
      enum "loopback" {
        value 4;
        description
          "Loopback interface.";
      }
      enum "point-to-point" {
        value 5;
        description
          "Point-to-Point link.";
      }
      enum "notrailers" {
        value 6;
        description
          "This flag is unused in Linux, but it exists for BSD compatibility.
          Avoid use of trailers";
      }
      enum "running" {
        value 7;
        description
          "Up and Running.";
      }
      enum "noarp" {
        value 8;
        description
          "Can't perform address resolution protocol.";
      }
      enum "promisc" {
        value 9;
        description
          "Promiscuous mode. Receive all packets.";
      }
      enum "allmulti" {
        value 10;
        description
          "Receive all multicast packets.";
      }
      enum "simplex" {
        value 11;
        description
          "Does not Rx or Tx at the sametime.";
      }
      enum "link0" {
        value 12;
        description
          "Link0.";
      }
      enum "link1" {
        value 13;
        description
          "Link1.";
      }
      enum "link2" {
        value 14;
        description
          "Link2.";
      }
      enum "multicast" {
        value 15;
        description
          "Supports multicast transmission.";
      }
      enum "notransmit" {
        value 16;
        description
          "Interface is no transmit mode.";
      }
      enum "nortexch" {
        value 17;
        description
          "No routing info exchange.";
      }
      enum "virtual" {
        value 18;
        description
          "Virtual interface.";
      }
      enum "ipv4" {
        value 19;
        description
          "IPv4 enabled.";
      }
      enum "ipv6" {
        value 20;
        description
          "IPv6 enabled.";
      }
    }
  }

  grouping if-common-operational {
    leaf if-index {
      type int32 {
        range "0..2147483647";
      }
      description
        "Interface index.";
    }

    leaf mtu {
      type uint16;
      description
        "The size of the largest IPV4 packet that the interface
         will send and receive.";
    }

    leaf mtu6 {
      type uint32;
      description
        "The size of the largest IPV6 packet that the interface
         will send and receive.";
    }

    leaf speed {
      type uint32;
      description
        "Interface speed.";
    }

    leaf metric {
      type uint32;
      description
        "Interface metric.";
    }

    leaf flags {
      type if-flags-type;
      description
        "Interface flags.";
    }

    leaf type {
      type identityref {
        base ietf-if:interface-type;
      }
      description
        "The link type of the interface.";
    }

    leaf phy-address {
      type yang:mac-address;
      description
        "The interface's MAC address.";
    }
  }

  container lib {
    list interface {
      key "name";
      description
        "Interface.";
      leaf name {
        type string;
        description
          "Interface name.";
      }

      leaf vrf {
        type frr-vrf:vrf-ref;
        description
          "VRF this interface is associated with.";
        config false;
      }

      leaf description {
        type string;
        description
          "Interface description.";
      }

      container state {
        config false;
        uses if-common-operational;
      }
    }
  }
}