HERMON_CQDB_CMDSN_SHIFT
*target = htonl(1 << HERMON_CQDB_CMDSN_SHIFT);
old_cmd_sn = tmp & (0x3 << HERMON_CQDB_CMDSN_SHIFT);
new_cmd_sn = (old_cmd_sn + (0x1 << HERMON_CQDB_CMDSN_SHIFT)) &
(0x3 << HERMON_CQDB_CMDSN_SHIFT);
cmd_sn = tmp & (0x3 << HERMON_CQDB_CMDSN_SHIFT);