Supported P4Runtime RPCs

message MasterArbitrationUpdate {
    uint64 device_id = 1;
    // The role for which the primary client is being arbitrated. For use-cases
    // where multiple roles are not needed, the controller can leave this unset,
    // implying default role and full pipeline access.
    Role role = 2;
    // The stream RPC with the highest election_id is the primary. The 'primary'
    // controller instance populates this with its latest election_id. Switch
    // populates with the highest election ID it has received from all connected
    // controllers.
    Uint128 election_id = 3;
    // Switch populates this with OK for the client that is the primary, and
    // with an error status for all other connected clients (at every primary
    // client change). The controller does not populate this field.
    .google.rpc.Status status = 4;
}
 
message Role {
    // Uniquely identifies this role.
    string name = 3;
    // Describes the role configuration, i.e. what operations, P4 entities,
    // behaviors, etc. are in the scope of a given role. If config is not set
    // (default case), it implies all P4 objects and control behaviors are in
    // scope, i.e. full pipeline access. The format of this message is
    // out-of-scope of P4Runtime.
    .google.protobuf.Any config = 2;
}

// Packet sent from the controller to the switch.
message PacketOut {
    bytes payload = 1;
    // This will be based on P4 header annotated as
    // @controller_header("packet_out").
    // At most one P4 header can have this annotation.
    repeated PacketMetadata metadata = 2;
}
 
// Packet sent from the switch to the controller.
message PacketIn {
    bytes payload = 1;
    // This will be based on P4 header annotated as
    // @controller_header("packet_in").
    // At most one P4 header can have this annotation.
    repeated PacketMetadata metadata = 2;
}
 
message PacketMetadata {
    // This refers to Metadata.id coming from P4Info ControllerPacketMetadata.
    uint32 metadata_id = 1;
    bytes value = 2;
}