Symbol: ASYNC_HW_IN_FLOW
usr/src/uts/common/sys/asy.h
439
ASYNC_HW_IN_FLOW = 1 << 10, /* input flow control in effect */
usr/src/uts/sun4/sys/sudev.h
342
#define ASYNC_HW_IN_FLOW 0x00000400 /* input flow control in effect */