- ptp_clock_status() adds status.ptp: state (LISTENING / UNCALIBRATED /
SLAVE), locked, gm_id, offset_ns, freq_ppb, path_delay_ns +
path_delay_sd_ns (window of 64, from lock on), steps_removed,
gm_time/freq_traceable, version, own_class (255 slave / 248 auto,
master), clock_id, gm_class/accuracy/p1/p2, sync_avg/min/max_ms and
sync_jitter_us (HW Sync intervals), announce_avg_ms, delay_req/resp
counters, hw_ts, window. Snapshot under a mutex shared with the PTP task.
- Per-Sync log moved to debug; info level logs state changes plus a
60 s summary (max |offset|, freq, delay).
- Verified vs ptp4l: LISTENING -> UNCALIBRATED -> SLAVE in ~35 s;
locked offset within a few hundred ns, delay 10.27 us +-0.20 us,
Delay_Req/Resp 69/69, Sync avg 1000.097 ms, Announce avg 2000 ms.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- ptp_clock.c replaces the 3.1 logger: UDP/IPv4 multicast, E2E.
Announce: IEEE 1588 dataset comparison picks the best GM, dropped after
announceReceiptTimeout x its announce interval. Sync/Follow_Up (two-step
and one-step) with HW t2 and correctionField. Delay_Req sent as a raw
frame (DSCP ptp.dscp, TTL 1, clockIdentity = EUI-64 from MAC) with HW
TX timestamp t3, randomised at the GM's Delay_Resp interval; Delay_Resp
matched on requestingPortIdentity + seq.
- Path delay corrected for offset drift between t2 and t3 (rate from
consecutive Syncs) so it is right before the clock is syntonised.
- ptp_hw: ptp_hw_send_event() builds Eth/IPv4/UDP 319 and returns the HW
TX timestamp.
- Verified vs ptp4l (i210 GM, HP 2530 non-PTP switch, PC 1G / board 100M):
GM selected, path delay settles at ~10.3 us and stays flat, rate
-39.8 +-0.4 ppm, offset drifts at -40 us/s (no servo yet).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
bsncubed