MAX_INTS_PER_SEC
newitr = (4000000 / MAX_INTS_PER_SEC) & 0x7FFC;
#define DEFAULT_ITR 1000000000/(MAX_INTS_PER_SEC * 256)
newitr = (4000000 / MAX_INTS_PER_SEC) & 0x7FFC;
#define DEFAULT_ITR (1000000000/(MAX_INTS_PER_SEC * 256))