Here is a list of all documented struct and union fields with links to the struct/union documentation for each field:

- u -

• u : memarea_chunk_t , tor_compress_state_t
• unit : unit_table_t
• unix_addr : hs_port_config_t , port_cfg_t
• unix_process : process_t
• unixoid_environment_block : process_environment_t
• UnixSocksGroupWritable : or_options_t
• unreachable_count : hs_cache_intro_state_t
• unusable_circuits : guard_pathbias_t
• unused_since : consensus_cache_entry_t
• update_args : threadpool_t
• update_fn : threadpool_t
• UpdateBridgesFromAuthority : or_options_t
• uptime : routerinfo_t
• url : get_handler_args_t
• usage : auth_dirport_t , storage_dir_t
• usage_known : storage_dir_t
• use_attempts : guard_pathbias_t
• use_begindir : entry_connection_t
• use_cached_ipv4_answers : entry_port_cfg_t
• use_rtt_estimate : circpad_state_t
• use_successes : guard_pathbias_t
• UseBridges : or_options_t
• used_legacy_circuit_handshake : or_circuit_t
• UseDefaultFallbackDirs : or_options_t
• UseEntryGuards : or_options_t
• UseEntryGuards_option : or_options_t
• UseGuardFraction : or_options_t
• UseMicrodescriptors : or_options_t
• User : or_options_t
• username : socks_request_t
• usernamelen : socks_request_t
• UsingTestNetworkDefaults_ : or_options_t