[Linuxptp-users] ptp4l stop with ANNOUNCE_RECEIPT_TIMEOUT_EXPIRES message.

[Takahiro S. <tsh...@gm...>]

Hello,

I am using ptp4l with hardware clock.
The ieee1588 hardware is Intel EG20T.
The sync is fine.
However ptp4l stop sometimes when we copy many data like following.

I connect 2 CrownBay(Intel E6xx CPU + Intel PCH EG20T) boards and 1 PC in
the same network.
I installed Linux kernel 3.3-rc6 on 2 CrownBays.
I installed Windows 7 on PC.
CrownBay-1 is a PTP master.
CrownBay-2 is a PTP slave.
Samba server is running on the CrownBay-2.
The ptp4l is running on the both CrownBay.
I mount the directory of CrownBay-2 on PC.
I copied many files between PC and CrwonBay-2 when I am running ptp4l.

The ptp4l log is as follows:

:
ptp4l[4305]: master offset       -502 s2 adj  -10566 path delay       3062
ptp4l[4305]: received SYNC without timestamp
ptp4l[4305]: port 1: bad message
ptp4l[4305]: received SYNC without timestamp
ptp4l[4305]: port 1: bad message
ptp4l[4305]: port 1: SLAVE to LISTENING on ANNOUNCE_RECEIPT_TIMEOUT_EXPIRES
:
:

I put debug message to see what is happened after
ANNOUNCE_RECEIPT_TIMEOUT_EXPIRES.

:
ptp4l[4305]: port 1: SLAVE to LISTENING on ANNOUNCE_RECEIPT_TIMEOUT_EXPIRES
ptp4l[4305]: port_set_announce_tmo
ptp4l[4305]: port_set_announce_tmo

port_set_announce_tmo is called infintely.

This continues after stopping data copy.

However, if I start Wireshark to see the packet exchange, ptp4l re-start
the sync.

Did anyone face the similar issue?

Thanks and Best regards,
Takahiro Shimizu