submodule frr-bgp-common-structure {
  yang-version 1.1;

  belongs-to frr-bgp {
    prefix "bgp";
  }

  import ietf-inet-types {
    prefix inet;
  }

  import frr-route-map {
    prefix frr-route-map;
  }

  import frr-interface {
    prefix frr-interface;
  }

  import ietf-bgp-types {
    prefix bt;
  }

  import frr-bgp-types {
    prefix frr-bt;
  }

  include "frr-bgp-common";

  organization
    "FRRouting";
  contact
    "FRR Users List: <mailto:frog@lists.frrouting.org> FRR Development
     List: <mailto:dev@lists.frrouting.org>";
  description
    "This submodule contains general data definitions for use in BGP.

     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 2019-12-03 {
    description
      "Initial revision.";
  }

  grouping structure-neighbor-group-ebgp-multihop {
    description
      "Structural grouping used to include EBGP multi-hop
       configuration for both BGP neighbors and peer groups.";
    container ebgp-multihop {
      description
        "EBGP multi-hop parameters for the BGP group.";
      choice hop-count-choice {
        case default-hop-count {
          leaf enabled {
            type boolean;
            default "false";
            description
              "When enabled the referenced group or neighbors are
               permitted to be indirectly connected - including cases
               where the TTL can be decremented between the BGP peers.";
          }
        }

        case max-hop-count {
          leaf multihop-ttl {
            type uint8 {
              range "1..255";
            }
            description
              "Time-to-live value to use when packets are sent to the
               referenced group or neighbors and ebgp-multihop is
               enabled.";
          }
        }
      }

      leaf disable-connected-check {
        type boolean;
        default "false";
        description
          "When set to 'true' it enforces EBGP neighbors perform multihop.";
      }
    }
  }

  grouping neighbor-local-as-options {
    container local-as {
      leaf local-as {
        type inet:as-number;
        description
          "The local autonomous system number that is to be used when
           establishing sessions with the remote peer or peer group, if
           this differs from the global BGP router autonomous system
           number.";
      }

      leaf no-prepend {
        type boolean;
        default "false";
        description
          "Do not prepend local-as to updates from EBGP peers. When
           set to 'true' it will not prepend local-as to updates. When
           set to 'false' it will prepend local-as to updates.";
      }

      leaf replace-as {
        type boolean;
        default "false";
        description
          "Do not prepend local-as to updates from IBGP peers.";
      }
    }
  }

  grouping neighbor-bfd-options {
    container bfd-options {
      leaf enable {
        type boolean;
        default "false";
        description
          "BFD support.";
      }

      leaf detect-multiplier {
        when "../enable = 'true'";
        type uint8 {
          range "2..255";
        }
        default "3";
        description
          "Detect multiplier.";
      }

      leaf required-min-rx {
        when "../enable = 'true'";
        type uint16 {
          range "50..60000";
        }
        units "miliseconds";
        default "300";
        description
          "Required min receive interval.";
      }

      leaf desired-min-tx {
        when "../enable = 'true'";
        type uint16 {
          range "50..60000";
        }
        units "miliseconds";
        default "300";
        description
          "Desired min transmit interval.";
      }

      leaf session-type {
        when "../enable = 'true'";
        type frr-bt:bfd-session-type;
        default "not-configured";
        description
          "BFD session type.";
      }

      leaf check-cp-failure {
        when "../enable = 'true'";
        type boolean;
        default "false";
        description
          "Link dataplane status with BGP control plane.";
      }
    }
  }

  grouping neighbor-remote-as {
    container neighbor-remote-as {
      leaf remote-as-type {
        type frr-bt:as-type;
        description
          "Remote AS type.";
      }

      leaf remote-as {
        when "../remote-as-type = 'as-specified'";
        type inet:as-number;
        description
          "The remote autonomous system number received in
           the BGP OPEN message.";
        reference
          "RFC 4271";
      }
    }
  }

  grouping neighbor-update-source {
    description
      "Source of routing updates.";
    container update-source {
      description
        "Source of routing updates config.";
      choice source {
        case ip-based {
          leaf ip {
            type inet:ip-address;
            description
              "IPv4 address/IPv6 address.";
          }
        }

        case interface-based {
          leaf interface {
            type frr-interface:interface-ref {
              require-instance false;
            }
            description
              "The local interface.";
          }
        }
      }
    }
  }

  grouping structure-neighbor-group-add-paths {
    description
      "Structural grouping used to include ADD-PATHs configuration
       and state for both BGP neighbors and peer groups.";
    container add-paths {
      description
        "Parameters relating to the advertisement and receipt of
         multiple paths for a single NLRI (add-paths).";
      reference
        "RFC 7911: ADD-PATH.";
      leaf path-type {
        type frr-bt:add-path-type;
        default "none";
        description
          "Enable ability to receive multiple path advertisements for
           an NLRI from the neighbor or group.";
      }
    }
  }

  grouping structure-neighbor-group-as-path-options {
    description
      "Structural grouping used to include AS_PATH manipulation
       configuration both BGP neighbors and peer groups.";
    container as-path-options {
      description
        "AS_PATH manipulation parameters for the BGP neighbor or
         group.";
      choice allowas-in {
        case occurence-based {
          leaf allow-own-as {
            type uint8 {
              range "1..10";
            }
            description
              "Specify the number of occurrences of the local BGP
               speaker's AS that can occur within the AS_PATH before it
               is rejected.";
          }
        }

        case origin-based {
          leaf allow-own-origin-as {
            type boolean;
            default "false";
            description
              "When set to 'true' only accept my AS in the as-path
               if the route was originated in my AS.";
          }
        }
      }

      leaf replace-peer-as {
        type boolean;
        default "false";
        description
          "Replace occurrences of the peer's AS in the AS_PATH with
           the local autonomous system number. This is same as override
           ASN CLI.";
      }
    }
  }

  grouping structure-neighbor-group-capability-options {
    description
      "Structural grouping used to include capability
       configuration for both BGP neighbors and peer groups.";
    container capability-options {
      description
        "Capability manipulation parameters for the BGP neighbor or
         group.";
      leaf dynamic-capability {
        type boolean;
        default "false";
        description
          "When set to 'true' dynamic capability is advertise to this peer.";
      }

      leaf strict-capability {
        type boolean;
        default "false";
        description
          "Strict capability negotiation match. When set to 'true'
           remote and local capabilities are strictly compared
           if capabilities are different, send Unsupported Capability
           error then reset connection.";
      }

      leaf extended-nexthop-capability {
        type boolean;
        default "false";
        description
          "When set to 'true' extended next-hop capability is advertise
           to this peer.";
      }

      leaf capability-negotiate {
        type boolean;
        default "true";
        description
          "When set to 'true' sending Capability Negotiation in the open
           message is suppressed to this peer.";
      }

      leaf override-capability {
        type boolean;
        default "false";
        description
          "Overrides the result of Capability Negotiation, ignoring remote
           peer's capability value, when set to 'true'.";
      }
    }
  }

  grouping structure-neighbor-default-originate-options {
    description
      "Structural grouping used to include default-originate
       configuration for both BGP neighbors and peer groups.";
    container default-originate {
      description
        "default originate parameters for the BGP neighbor or
         group.";
      leaf originate {
        type boolean;
        default "false";
        description
          "If set to 'true', send the default-route to the neighbour(s).";
      }

      leaf route-map {
        type frr-route-map:route-map-ref;
        description
          "Route-map to specify criteria to originate default.";
      }
    }
  }

  grouping structure-neighbor-prefix-limit {
    container prefix-limit {
      description
        "Parameters relating to the prefix limit for the AFI-SAFI.";
      list direction-list {
        key "direction";
        leaf direction {
          type frr-bt:direction;
          description
            "Prefix limit applied on Tx route-updates or Rx route-updates.";
        }

        leaf max-prefixes {
          type uint32;
          mandatory true;
          description
            "Maximum number of prefixes that will be accepted from the
             neighbour.";
        }

        leaf force-check {
          type boolean;
          default false;
          description
            "Force check all received routes.";
        }

        container options {
          when "../direction = 'in'";
          choice options {
            case warning {
              leaf warning-only {
                type boolean;
                default "false";
                description
                  "When set to 'true' only give warning message when limit
                   is exceeded.";
              }
            }

            case restart {
              leaf restart-timer {
                type uint16;
                units "minutes";
                description
                  "Time interval in seconds after which the BGP session is
                   re-established after being torn down due to exceeding the
                   max-prefix limit.";
              }
            }

            case threshold {
              leaf shutdown-threshold-pct {
                type bt:percentage;
                description
                  "Threshold on number of prefixes that can be received from
                   a neighbour before generation of warning messages or log
                   entries. Expressed as a percentage of max-prefixes.";
              }
            }

            case threshold-restart {
              leaf tr-shutdown-threshold-pct {
                type bt:percentage;
                description
                  "Threshold on number of prefixes that can be received from
                   a neighbour before generation of warning messages or log
                   entries. Expressed as a percentage of max-prefixes.";
              }

              leaf tr-restart-timer {
                type uint16;
                units "minutes";
                description
                  "Time interval in seconds after which the BGP session is
                   re-established after being torn down due to exceeding the
                   max-prefix limit.";
              }
            }

            case threshold-warning {
              leaf tw-shutdown-threshold-pct {
                type bt:percentage;
                description
                  "Threshold on number of prefixes that can be received from
                   a neighbour before generation of warning messages or log
                   entries. Expressed as a percentage of max-prefixes.";
              }

              leaf tw-warning-only {
                type boolean;
                default "false";
                description
                  "When set to 'true' only give warning message when limit
                   is exceeded.";
              }
            }
          }
        }
      }
    }
  }

  grouping structure-neighbor-nexthop-self {
    container nexthop-self {
      description
        "Parameters relating to the nexthop-self for the AFI-SAFI.";
      leaf next-hop-self {
        type boolean;
        default "false";
        description
          "When set to 'true', EBGP learned routes are announced with the
           local speaker's nexthop.";
      }

      leaf next-hop-self-force {
        type boolean;
        default "false";
        description
          "When set to 'true', EBGP learned routes are announced with the
           local speaker's nexthop.";
      }
    }
  }

  grouping structure-neighbor-private-as {
    container private-as {
      description
        "Parameters relating to the private-as for the AFI-SAFI.";
      leaf remove-private-as-all {
        type boolean;
        default "false";
        description
          "When set to 'true', private ASNs are removed from outbound updates;
           applies to all AS numbers.";
      }

      leaf remove-private-as-all-replace {
        type boolean;
        default "false";
        description
          "When set to 'true', private ASNs are replaced by the local
           speaker's ASN in all outbound updates; applies to all AS numbers.";
      }

      leaf remove-private-as {
        type boolean;
        default "false";
        description
          "When set to 'true', removes private ASNs in outbound updates;
           applies to all AS numbers.";
      }

      leaf remove-private-as-replace {
        type boolean;
        default "false";
        description
          "When set to 'true', private ASNs are replaced with the local
           speaker's ASN in all outbound updates; applies to all AS numbers.";
      }
    }
  }

  grouping structure-neighbor-weight {
    container weight {
      description
        "Parameters relating to the weight for the AFI-SAFI.";
      leaf weight-attribute {
        type uint16 {
          range "0..65535";
        }
        description
          "Set default weight for routes from this neighbor.";
      }
    }
  }

  grouping structure-neighbor-route-reflector {
    container route-reflector {
      description
        "Parameters relating to the route-reflector for the AFI-SAFI.";
      leaf route-reflector-client {
        type boolean;
        default "false";
        description
          "Configure a neighbor as route reflector client.";
      }
    }
  }

  grouping structure-neighbor-route-server {
    container route-server {
      description
        "Parameters relating to the route-server for the AFI-SAFI.";
      leaf route-server-client {
        type boolean;
        default "false";
        description
          "Configure a neighbor as route server client.";
      }
    }
  }

  grouping structure-neighbor-send-community {
    container send-community {
      description
        "Parameters relating to the send-community for the AFI-SAFI.";
      leaf send-community {
        type boolean;
        default "true";
        description
          "Send standard community attribute to this neighbor.";
      }

      leaf send-ext-community {
        type boolean;
        default "true";
        description
          "Send extended community attribute to this neighbor.";
      }

      leaf send-large-community {
        type boolean;
        default "true";
        description
          "Send large community attribute to this neighbor.";
      }
    }
  }

  grouping structure-neighbor-group-admin-shutdown {
    description
      "Structural grouping used to include admin-shutdown
       configuration for both BGP neighbors and peer groups.";
    container admin-shutdown {
      description
        "BGP Administrative Shutdown Communication.";
      leaf enable {
        type boolean;
        description
          "When set to 'true', BGP shutdown communication is enabled.";
      }

      leaf message {
        type string;
        description
          "Shutdown message.";
        reference
          "draft-ietf-idr-shutdown-06";
      }
    }
  }

  grouping structure-neighbor-group-graceful-restart {
    description
      "Structural grouping used to include graceful-restart
       configuration for both BGP neighbors and peer groups.";
    container graceful-restart {
      description
        "BGP Graceful restart feature.";
      choice mode {
        case graceful-restart-mode {
          leaf enable {
            type boolean;
            default "false";
            description
              "Enable or disable the graceful-restart capability.
               Setting this value to 'true' enables the graceful-restart
               and helper both at peer level. Setting this value to 'false'
               disables graceful restart and helper mode. The peer will inherit
               global configuration.";
          }
        }

        case graceful-restart-helper-mode {
          leaf graceful-restart-helper {
            type boolean;
            default "false";
            description
              "Setting this value to 'true' enables helper mode for the peer
               Setting this value to 'false' disables the helper mode. The
               peer will inherit global configuration.";
          }
        }

        case graceful-restart-disable-mode {
          leaf graceful-restart-disable {
            type boolean;
            default "false";
            description
              "Setting this value to 'true' disables the graceful-restart
               and helper Mode. Setting this value to 'false' causes the peer
               to inherit global configuration.";
          }
        }
      }
    }
  }

  grouping structure-neighbor-group-soft-reconfiguration {
    description
      "Structural grouping used to include soft-reconfiguration
       configuration for both BGP neighbors and peer groups.";
    leaf soft-reconfiguration {
      type boolean;
      default "false";
      description
        "Allow inbound soft reconfiguration for this neighbor.";
    }
  }

  grouping structure-neighbor-group-attr-unchanged {
    description
      "Structural grouping used to include BGP route propagation
       rules configuration for both BGP neighbors and peer groups.";
    container attr-unchanged {
      description
        "BGP route propagation rules configuration.";
      leaf as-path-unchanged {
        type boolean;
        default "false";
        description
          "When set to 'true' as-path attribute is propagated unchanged.";
      }

      leaf next-hop-unchanged {
        type boolean;
        default "false";
        description
          "When set to 'true' next-hop attribute is propagated unchanged.";
      }

      leaf med-unchanged {
        type boolean;
        default "false";
        description
          "When set to 'true' med attribute is propagated unchanged.";
      }
    }
  }

  grouping structure-neighbor-group-orf-capability {
    description
      "Structural grouping used to include orf
       configuration for both BGP neighbors and peer groups.";
    container orf-capability {
      choice orf-update {
        case send {
          leaf orf-send {
            type boolean;
            default "false";
            description
              "Setting to 'true' advertises the ORF capability.";
          }
        }

        case receive {
          leaf orf-receive {
            type boolean;
            default "false";
            description
              "When set to 'true' it receives the orf capability.";
          }
        }

        case both {
          leaf orf-both {
            type boolean;
            default "false";
            description
              "When set to 'true' it advertises/receives the orf capability.";
          }
        }
      }
    }
  }

  grouping structure-neighbor-config-timers {
    description
      "Structural grouping used to include per neighbor timers
       configuration for both BGP neighbors and peer groups.";
    container timers {
      leaf advertise-interval {
        type uint16 {
          range "0..600";
        }
        units "seconds";
        description
          "Minimum interval between sending BGP routing updates.";
      }

      leaf connect-time {
        type uint16 {
          range "1..65535";
        }
        units "seconds";
        description
          "BGP connect timer.";
      }

      uses neighbor-timers;
    }
  }

  grouping structure-neighbor-group-filter-config {
    description
      "Structural grouping used to include filter
       configuration for both BGP neighbors and peer groups.";
    container filter-config {
      description
        "BGP Policy configuration for both BGP neighbors and groups.";
      uses rmap-policy-import;

      uses rmap-policy-export;

      uses plist-policy-import;

      uses plist-policy-export;

      uses access-list-policy-import;

      uses access-list-policy-export;

      uses as-path-filter-list-policy-import;

      uses as-path-filter-list-policy-export;

      uses unsuppress-map-policy-import;

      uses unsuppress-map-policy-export;
    }
  }
}
