HIF_READ
(HIF_READ | HIF_SYNCHRONOUS | \
(HIF_READ | HIF_SYNCHRONOUS | \
(HIF_READ | HIF_ASYNCHRONOUS | \
(HIF_READ | HIF_SYNCHRONOUS | \
#define HIF_DIR_MASK (HIF_READ | HIF_WRITE)
if ((request & HIF_READ) && bounced)