Here are the data structures with brief descriptions:

Cautoflush_timeouts	List of autoflush timeouts of output interfaces
Cbuffer_s	Output buffer structure
Cclient_s	Structure for TCP/IP IFC client information
Cfile_buffer_s
Cfile_private_s
Cgenerator_private_s
Chello_msg_header_s
Cmsg_header_s
Creader_threads_s
Ctcpip_receiver_private_s
Ctcpip_sender_private_s	Structure for TCP/IP IFC private information
Ctcpip_socket_addr
Ctls_receiver_private_s
Ctls_sender_private_s	Structure for TLS IFC private information
Ctls_socket_addr
Ctlsclient_s	Structure for TLS IFC client information
Ctrap_buffer_header_s
Ctrap_ctx_priv_s
Ctrap_ifc_spec_s
Ctrap_input_ifc_s
Ctrap_output_ifc_s