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);