fast_handler
extern char fast_handler[];
unsigned int start = (unsigned int) fast_handler;
return rcd->do_interrupt == rcd->fast_handler;
rcd->do_interrupt = rcd->fast_handler;
intr_handler fast_handler;
rcd->fast_handler = get_dma_rtail_setting(rcd) ?
uctxt->fast_handler = handle_receive_interrupt_napi_fp;