following cases: A single sendmsg () or sendfile () system call contains multiple logical messages that ... data being processed from a sendmsg () or sendfile () system call, the f…these features include support for zero-copy sendfile (2), Explicit Congestion Notification, new management ... useful for prepending headers before calling sendfile (2), or for th…operations like write (2), writev (2), sendfile (2), read (2), and readv