tree 9863b9ac8f41e03daf0b5625354e6549933f1159
parent 7345ac419283973614e96534041e269a1be507aa
author Konstantin Aladyshev <aladyshev22@gmail.com> 1620215354 +0300
committer Konstantin Aladyshev <aladyshev22@gmail.com> 1620215354 +0300

sensordatahandler: Set data unavailable if value is NaN

Currently if sensor value is NaN ipmid will report it as 0.

There is a special bit in "Get Sensor Reading Command" that
should be used to indicate not available state:

1b = reading/state unavailable
      The bit is also used to indicate when a reading/state
      is unavailable because the management controller cannot
      obtain a valid reading or state for the monitored entity,
      typically because the entity is not present.

Utilize this bit to add support for not available (na) state.

Example:
 Before:
  $ ipmitool sdr
  CPU0             | 0 degrees C | ok
  $ ipmitool sensor
  CPU0             | 0.000       | degrees C  | ...

 After:
  $ ipmitool sdr
  CPU0             | no reading  | ns
  $ ipmitool sensor
  CPU0             | na          | degrees C  | ...

Signed-off-by: Konstantin Aladyshev <aladyshev22@gmail.com>
Change-Id: I05dec5baf7ef33929dd782ddeed0db83855f8bf0