| Updated: October 28, 2024 | 
Perform a flow-control operation on a data stream
#include <sys/ioctl.h>
#define TCXONC          _IOW('T',  6, int)
| Argument | Value | 
|---|---|
| fd | A file descriptor that you obtained by opening the device | 
| request | TCXONC | 
| Additional argument | A pointer to an int | 
This command performs a flow-control operation on the data stream associated with the file descriptor. It's also implemented as the DCMD_CHR_TCFLOW devctl() command.