AMM_BASIC_BLOCK
for (data += AMM_BASIC_BLOCK, len -= AMM_BASIC_BLOCK;
#define AMM_VALID_REPORT(L) (((L) >= AMM_BASIC_BLOCK) && \
((L) <= 16*AMM_FINGER_BLOCK + AMM_BASIC_BLOCK) && \
((L) % AMM_FINGER_BLOCK) == AMM_BASIC_BLOCK)