This calculation is done using the timestamps but without any correction.

The delayMS in PS was not set in the WR servo.

When a transition of a interface form up->down->up occured, the Slave port was restarted sometimes with the extension OFF.
It has been fixed by re-enabling the extension when a transition state from SLAVE to UNCALIBRATED is detected.

Fix problem related to code optimization

The conversion has been fixed now for negative values.

The detection of a new parent has been moved in a call back of the S1
treatment. The previous implementation had some side effect due to the
fact that the detection was coming too late in some cases (pb with
erbest calculation)

The doRestart called by the servo is now extension specific. It help to
make a more cleaner restart.

The calculation of the erbest is no longer called if
ExternalPortConfiguration is enabled. The erbest is set when a new
foreign master is added.

The S1 treatment must be called only if the foreign master is
accepted/registered by the BMCA.

- In case of handshake failure due to the reception of an unexpected
message, execute the same procedure executed in case of time-out. The
behavior will be more coherent.
- better diagnostics

This version of ppsi, currently submodule of proposed_master of
wr-switch-sw, is not building because of INT_MAX, UINT_MAX and the like.

This includes <limits.h> in all files where this is needed.

Obviously, <limits.h> will be missing in wrpc-sw and bare builds, but
this version does not build for most architectures anyways (including
arch-unix).
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Bug description : When a MASTER port is at a lower port number than a
SLAVE port, the SLAVE port is jumping all the time between UNCALIBRATED
and SLAVE state.

The 2 octets were displayed as as int16 so they can be swapped depending
of the architecture.

When the PPS generation is forced by configuration, the PPS was disabled
when an instance was leaving the UNCALIB/SLAVE states to another state.

- When a new GM has been detected by the BMCA, the SLAVE state must
transition to UNCALIBRATED. If the state is already set to UNCALIBRATED
, nothing must be done.

- All announce messages not received from erbest are not been taken into
account. erbest is the best qualified foreign master.
- Comments added

Introduction of an other way to calculate the best foreign master. It
has been changed to fix bugs found during ISPC20119 (IOL test). Tests
showed unstable behavior in the computation of foreign master
qualification in some specific circumstances (time window of 8s with
announce messages every 5s)

Issue detected by IOL test in ICALEPS2019
The selection of the ErBest was not taking account all the time of the
qualification.

- New mechanism for clock degradation (degrade clock class, clock
accuracy, clock variance, timeSource, ptpTimeScale, frequencyTraceable,
timeTraceable)
- timeSource can be configured now
- If clock accuracy, clock variance and timeSource are not set in
ppsi.conf, default values are used depending of the clock class.

Change clock accuracy from 0x21(100ns) to 0x20(25ns) for ARB Grand Master.

This field is used to store the active peer connected to an instance. In
wr_mon tool, it replaces the field peer on the display which was not
very explicit when many peers are connected on the same port. The field
activePeer takes the value of peer field in the following cases :

           MASTER          UNCALIBRATED/SLAVE
P2P     Rx PDELAY_RESP    Rx qualified ANNOUNCE
          (Filtered)
E2E       DELAY_RESP      Rx qualified ANNOUNCE

In other cases, the activePeer field is set to 0

The fields in timePropertiesDS are been reevaluated. The file bmc.c
contains a table showing the different use cases.

For a GM the FSM must not be called until:
- the timing mode has not been programmed
- the clock quality has not been verified

These 2 actions : locking_reset() and enable_timing_output(0) must be
done also when the extension is not active.