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

  import ietf-inet-types {
    prefix inet;
  }

  import frr-filter {
    prefix filter;
  }

  import frr-interface {
    prefix frr-interface;
  }

  organization
    "FRRouting";
  contact
    "FRR Users List:       <mailto:frog@lists.frrouting.org>
     FRR Development List: <mailto:dev@lists.frrouting.org>";
  description
    "This module defines route map settings

     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 2019-07-01 {
    description
      "Initial revision";
  }

  identity rmap-match-type {
    description
      "Base route-map match-condition";
  }

  identity interface {
    base rmap-match-type;
    description
      "Match interface";
  }

  identity ipv4-address-list {
    base rmap-match-type;
    description
      "Match an IPv4 access-list";
  }

  identity ipv4-prefix-list {
    base rmap-match-type;
    description
      "Match an IPv4 prefix-list";
  }

  identity ipv4-next-hop-list {
    base rmap-match-type;
    description
      "Match an IPv4 next-hop";
  }

  identity ipv4-next-hop-prefix-list {
    base rmap-match-type;
    description
      "Match an IPv4 next-hop prefix list";
  }

  identity ipv4-next-hop-type {
    base rmap-match-type;
    description
      "Match an IPv4 next-hop type";
  }

  identity ipv6-address-list {
    base rmap-match-type;
    description
      "Match an IPv6 access-list";
  }

  identity ipv6-prefix-list {
    base rmap-match-type;
    description
      "Match an IPv6 prefix-list";
  }

  identity ipv6-next-hop-type {
    base rmap-match-type;
    description
      "Match an IPv6 next-hop type";
  }

  identity match-metric {
    base rmap-match-type;
    description
      "Match a route metric";
  }

  identity match-tag {
    base rmap-match-type;
    description
      "Match a route tag";
  }

  identity rmap-set-type {
    description
      "Base route-map set-action";
  }

  identity ipv4-next-hop {
    base rmap-set-type;
    description
      "Set IPv4 address of the next hop";
  }

  identity ipv6-next-hop {
    base rmap-set-type;
    description
      "Set IPv6 address of the next hop";
  }

  identity set-metric {
    base rmap-set-type;
    description
      "Set prefix/route metric";
  }

  identity set-tag {
    base rmap-set-type;
    description
      "Set tag";
  }

  identity set-sr-te-color {
    base rmap-set-type;
    description
      "Set Color of the SR-TE";
  }

  typedef route-map-sequence {
    type uint16 {
      range "1..65535";
    }
    description
      "Route map valid sequence numbers";
  }

  typedef route-map-name {
    type string;
    description
      "Route map name format";
  }

  typedef route-map-ref {
    type leafref {
      path "/frr-route-map:lib/frr-route-map:route-map/frr-route-map:name";
      require-instance false;
    }
    description
      "Reference to a route-map.";
  }

  grouping rmap-match-condition {
    container rmap-match-condition {
      choice match-condition {
        description
          "Value to match (interpretation depends on condition type)";
        case interface {
          when "derived-from-or-self(../condition, 'interface')";
          leaf interface {
            type frr-interface:interface-ref;
          }
        }

        case list-name {
          when "derived-from-or-self(../condition, 'ipv4-address-list') or "
             + "derived-from-or-self(../condition, 'ipv4-prefix-list') or "
             + "derived-from-or-self(../condition, 'ipv4-next-hop-list') or "
             + "derived-from-or-self(../condition, 'ipv4-next-hop-prefix-list') or "
             + "derived-from-or-self(../condition, 'ipv6-address-list') or "
             + "derived-from-or-self(../condition, 'ipv6-prefix-list')";
          leaf list-name {
            type filter:access-list-name;
          }
        }

        case ipv4-next-hop-type {
          when "derived-from-or-self(../condition, 'ipv4-next-hop-type')";
          leaf ipv4-next-hop-type {
            type enumeration {
              enum "blackhole" {
                value 0;
              }
            }
          }
        }

        case ipv6-next-hop-type {
          when "derived-from-or-self(../condition, 'ipv6-next-hop-type')";
          leaf ipv6-next-hop-type {
            type enumeration {
              enum "blackhole" {
                value 0;
              }
            }
          }
        }

        case match-metric {
          when "derived-from-or-self(../condition, 'match-metric')";
          leaf metric {
            type uint32 {
              range "1..4294967295";
            }
          }
        }

        case match-tag {
          when "derived-from-or-self(../condition, 'match-tag')";
          leaf tag {
            type uint32 {
              range "1..4294967295";
            }
          }
        }
      }
    }
  }

  grouping rmap-set-action {
    container rmap-set-action {
      choice set-action {
        description
          "Value to set (interpretation depends on action-type)";
        case ipv4-address {
          when "derived-from-or-self(../action, 'ipv4-next-hop')";
          leaf ipv4-address {
            type inet:ipv4-address;
            description
              "IPv4 address";
          }
        }

        case ipv6-address {
          when "derived-from-or-self(../action, 'ipv6-next-hop')";
          leaf ipv6-address {
            type inet:ipv6-address;
            description
              "IPv6 address";
          }
        }

        case set-metric {
          when "derived-from-or-self(../action, 'set-metric')";
          choice metric-value {
            description
              "Metric to set or use";
            case value {
              leaf value {
                type uint32 {
                  range "0..4294967295";
                }
                description
                  "Use the following metric value";
              }
            }

            case add-metric {
              leaf add-metric {
                description "Add value to metric.";
                type uint32 {
                  range "0..4294967295";
                }
              }
            }

            case subtract-metric {
              leaf subtract-metric {
                description "Subtract value from metric.";
                type uint32 {
                  range "0..4294967295";
                }
              }
            }

            case use-round-trip-time {
              leaf use-round-trip-time {
                type boolean;
                description
                  "Use the round trip time as metric";
              }
            }

            case add-round-trip-time {
              leaf add-round-trip-time {
                type boolean;
                description
                  "Add round trip time to metric";
              }
            }

            case subtract-round-trip-time {
              leaf subtract-round-trip-time {
                type boolean;
                description
                  "Subtract round trip time to metric";
              }
            }
          }
        }

        case set-tag {
          when "derived-from-or-self(../action, 'set-tag')";
          leaf tag {
            type uint32 {
              range "0..4294967295";
            }
            description
              "Tag value";
          }
        }

        case set-sr-te-color {
          when "derived-from-or-self(../action, 'set-sr-te-color')";
          leaf policy {
            type string;
            description
              "Color of the SR-TE Policies to match with";
          }
        }
      }
    }
  }

  container lib {
    list route-map {
      key "name";
      description
        "Route map instance";
      leaf name {
        type route-map-name;
        description
          "Route map instance name";
      }
      leaf optimization-disabled {
        type boolean;
        default false;
        description "Disables or enables the optimization";
      }

      list entry {
        key "sequence";
        description
          "Route map entry";
        leaf sequence {
          type route-map-sequence;
          description
            "Route map instance priority (low number means higher priority)";
        }

        leaf description {
          type string;
          description
            "Route map description";
        }

        leaf action {
          type enumeration {
            enum "permit" {
              value 0;
              description
                "Executes configured action and permits the prefix/route
                 if the conditions matched. An alternative exit action can
                 be configured to continue processing the route map list
                 or jump to process another route map.";
            }
            enum "deny" {
              value 1;
              description
                "If all conditions are met the prefix/route is denied and
                 route map processing stops.";
            }
          }
          mandatory true;
          description
            "Route map actions: permit (executes action), deny (quits evaluation)";
        }

        leaf call {
          type route-map-name;
          description
            "Call another route map before calling `exit-policy`. If the
             called route map returns deny then this route map will also
             return deny";
        }

        leaf exit-policy {
          type enumeration {
            enum "permit-or-deny" {
              value 0;
              description
                "End route map evaluation and return";
            }
            enum "next" {
              value 1;
              description
                "Proceed evaluating next route map entry per sequence";
            }
            enum "goto" {
              value 2;
              description
                "Go to route map entry with the provided sequence number";
            }
          }
          default "permit-or-deny";
          description
            "What do to after route map successful match, set and call";
        }

        leaf goto-value {
          when "../exit-policy = 'goto'";
          type route-map-sequence;
          mandatory true;
          description
            "Sequence number to jump (when using `goto` exit policy)";
        }

        list match-condition {
          key "condition";
          description
            "Route map match conditions";
          leaf condition {
            type identityref {
              base rmap-match-type;
            }
            description
              "Match condition";
          }

          uses rmap-match-condition;
        }

        list set-action {
          key "action";
          description
            "Route map set actions";
          leaf action {
            type identityref {
              base rmap-set-type;
            }
            description
              "Action to do when the route map matches";
          }

          uses rmap-set-action;
        }
      }
    }
  }
}