FIB6_EXCEPTION_BUCKET_SIZE_SHIFT  122 include/net/ip6_fib.h #define FIB6_EXCEPTION_BUCKET_SIZE (1 << FIB6_EXCEPTION_BUCKET_SIZE_SHIFT)
FIB6_EXCEPTION_BUCKET_SIZE_SHIFT 1512 net/ipv6/route.c 	return hash_32(val, FIB6_EXCEPTION_BUCKET_SIZE_SHIFT);