Fixes issues with net_ptp_time arithmetic where second
overflow/underflow would not be handled properly.
Signed-off-by: Benjamin Cabé <benjamin@zephyrproject.org>
Signed-off-by: Adam Wojasinski <awojasinski@baylibre.com>
Offset should be *subtracted* from current clock value, not added.
This was causing clock to accumulate error instead of actually
"converging".
Signed-off-by: Benjamin Cabé <benjamin@zephyrproject.org>
Add cast to NSEC_PER_SEC macro to correctly check offset.
Prior to this commit, the would eval to true incorrectly.
Signed-off-by: Benjamin Cabé <benjamin@zephyrproject.org>
Generally, we should avoid using reserved names in global
contexts.
subsys/net/lib/ptp/clock.c:58:25: \
error: 'clock' redeclared as different kind of symbol
58 | static struct ptp_clock clock = { 0 };
/opt/toolchains/zephyr-sdk-0.16.8/arm-zephyr-eabi/picolibc/ \
include/time.h💯12: \
note: previous declaration of 'clock' with type 'clock_t(void)' \
{aka 'long unsigned int(void)'}
100 | clock_t clock (void);
subsys/net/lib/ptp/clock.c:58:25: \
error: 'clock' defined but not used [-Werror=unused-variable]
58 | static struct ptp_clock clock = { 0 };
Signed-off-by: Chris Friedt <cfriedt@tenstorrent.com>
This commit adds implementation of the PTP thread that will
poll sockets descriptors and PTP Port's timeres for timeouts,
generate events and handle them and trigger STATE_DECISION_EVENT
handling when needed.
Signed-off-by: Adam Wojasinski <awojasinski@baylibre.com>
The STATE_DECISION_EVENT in PTP is a pivotal mechanism that
facilitates dynamic state management within the protocol,
allowing devices to adapt their operational states based on the BTCA's
recommendations and the health of the network.
Signed-off-by: Adam Wojasinski <awojasinski@baylibre.com>
This commit introduces routines for PTP message transmission.
It includes transmission of three types of messages (Announce,
Sync, Delay_Req) that should be send periodically depending
on the PTP Port's state.
Signed-off-by: Adam Wojasinski <awojasinski@baylibre.com>
Introduction of routines processing received PTP Management messages.
The processing is split into clock-oriented and port-oriented parts.
Signed-off-by: Adam Wojasinski <awojasinski@baylibre.com>
Add handler for STATE_DECISION_EVENT it consists of following routines:
- state decision algorithm
- best timeTransmitter clock algorithm
- data sets comparison algorithm
Based on IEEE 1588-2019 section 9.3.3
Signed-off-by: Adam Wojasinski <awojasinski@baylibre.com>
This commit adds routines for handling incoming messages
needed for correct operation of the PTP stack in end to end
mode with multicast operation mode.
Signed-off-by: Adam Wojasinski <awojasinski@baylibre.com>
Initial implementation of the clock adjustment and delay calculation.
Timestamp values used for calculations will be obtained from
proper PTP messages (Sync, Follow_Up, Delay_Req, and Delay_Resp)
Signed-off-by: Adam Wojasinski <awojasinski@baylibre.com>
Foreign timeTransmitters are other PTP Clocks in a domain. They announce
their parameters via announce messages. PTP Ports should record
these foreign timeTransmitters.
Signed-off-by: Adam Wojasinski <awojasinski@baylibre.com>
Implement possibility to configure PTP stack in TIME_RECEIVER_ONLY mode.
This restrics stack behaviour and doesn't allow for any PTP Port
of the PTP Clock become a TimeTransmitter Clock.
The change includes:
- Kconfig option
- Additional field in `struct ptp_port` structure
- New state machine function for a timeReceiver-only PTP Port.
- Extra steps in PTP Clock and PTP Port initialization.
New finite state machine is based on the figure 31
in section 9.2.5 of the IEEE 1588-2019.
Signed-off-by: Adam Wojasinski <awojasinski@baylibre.com>
This commit introduces PTP Clock and PTP Port structures
and API for initializing PTP Clock and PTP Ports. Configuration
options has been added as Kconfig symbols to configure parameters
of the Clock and Ports at compile time.
Signed-off-by: Adam Wojasinski <awojasinski@baylibre.com>
