When received frames are displayed (diagnostic mode), PPSI was staying
forever in a loop due to unexpected TLV received in the frame.

This was due to the introduction of system timers in the main loop of
the switch. In minirpc the pool() system call exited sometime when the
timer fired. Some other problems have been found during the debugging
process. Some of them have been already adressed :
- In minirpc, loop on pool() system call if the call is interrupted.
- Wrong check in function wrs_locking_poll(). Was working by chance.
- L12_state_machine() was calling to many often the state handle. It was
increasing the number of hardware calls for nothing.

TODO: The returned values for the function wrs_locking_poll(), halexp_lock_cmd(), and hal_port_check_lock() should be reviewed to be more consistent.

based on jcb's commit from wrs
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

- This function checks now the minimum and maximum values which can be
encoded into a RelativeDifference type.
- Bux fix for the calculation of min/max value conversion (special
cases)

- The origin timestamp sent in SYNC and DELAY_REQ messages is corrected
with the egressTimestampLatency.

- The timeout expressed in ms is stored in an integer value. A Log
interval may have a value in the range -128,127. The timeout cannot
covers all this range. A protection as been added to avoid wrong timeout
calculation which might generate a crash of PPSI.
- A new function is also added pp_timeout_log_to_ms() to verify the log
Interval and calculate the timeout.
- Optimize the execution of pp_timeout_set()

- We do not wait the L1SYNC state UP before to go from UNCALIBRATED to
SLAVE state.
- When the link goes down, we force the next state to DISABLE

- Set the minimum and maximum values of some parameters
- Fix format issues in pp_printf and sscanf

- Force to stay on UNCALIBRATED state (was going to slave state)
- Force to stay on PRE-MASTER state  (was going to master state)

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

- Reset local remaining time-out when 'select' exits due to a signal

- Change calculation of delayAsymmetry
- Set offsetFromMaster (generic servo)
- Set meanDelay (generic servo)

- The %f format is not supported in pp_printf. So we will not display
the float value in error messages.
- Change DBL_MIN by -DBL_MAX to have the minimum value of a double

- Optimize the scheduler (main_loop) using system timer. It makes the
calculation of the timeout more precise  taking into account execution
time of some part of the code

- Optimize the L1SYNC sent messages too take into account the time spent
to send an frame

- Move initialization of configurable parameters in L1SYNC init hook
- Set the L1SYNC state to DISABLE in the startup otherwise the state is
not set if the port is not connected
- Remove time printing in diag messages
- restrict call to servo only when the state is UP
- Adjust properly the delay returned by each l1sync state functions
- Set REQUEST timeout value dependent of the delay mechanism (E2E/P2P)
- Bug fix: PP_P2P_MECH used instead of P2P
- Optimize the REQUEST timeout to generate asap a DelayReq message after
the first SYNC message received

The default configuration was not copied in the right place in PPSI
instance.

This implementation does not include yet the possibility to declare 2
exclusive instances on a same port (WR & HA)
- Some structures are renamed with the suffix _t to make it more
readable.
- Some variables are renamed  to be more clear
- Implementation of masterOnly, slaveOnly and externalPortConfiguration
- All extension specific includes (XX-api.h) is now automatically
included in ppsi.h and do not need to be included in other files.

- This structure is changed in order to be able to use SIGNALING
messages with non-fowardable MAC address. This have an impact on many
places as we have to distinguish two kind of signaling messages

- New  parameters added
- Parameter check with min/max values
- Updated fied mask suppressed: At startup the conf structure in each
ppsi instance must be initialized with the default values.

This arguement was used to set all ports to slave role. As it may be on
conflict with the ppsi configuration, this parameter has been
suppressed.

Missing file commit.

For the calculation of the delay MS, we use now
asymmetryCorrectionPortDS.scaledDelayCoefficient (fpa:2^62) instead of
fiber_fix_alpha.

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

This will be needed when switchover will be implemented. Then 2 servos
will be needed (an active amd passive one).
Also the servo state has been moved in the common servo DS.

- We can declare now a list of keyword for the parameter name :
it make the declaration of keywords more compact in conf.c and use less
memory (eg. "extension profile" )
- We can declare also a list of keywords for the parameter value
(eg. "true 1 on" = 1)
- Add the possibility to mark parameters set in the config file. It is
very important to know in some cases in order to apply the default value
or not.
- Decode other parameter types: boolean, double

This happens whith BMCA time-out because it is initialized to 0. Then
the check of the time-out returns always 0. BMCA is then never called.

This implementation works on a WR Switch but does not yet integrate all
required functionalities. List of current modifications :
- Implementation of the L1SYNC protocol
- Modifications of the standard protocol: new hook, TS calculation
- Change WRS to integrate HA
- HAL adaptations
- ...

standard IEEE1588-2018

We bring here a lot of changes to :
- make the implementation more complaiant with the standard
IEEE1588-2018.
  We introduce new structures for the time (TimeInterval, Relative
difference)
  Named used in structures are aligned to the standard, ...
  It is just a first step. More work is needed
- be able to use more than one protocol extension at the same time
  (configurations, structures, ...)
- add the concept of profile
- increase diagnostics by displaying also standard PTP servo
informations

independant of a pp_instance. Also add wrh_servo_head for wr_mon.

extensions

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

calibration