This is an updated version of a script I wrote a couple years ago for
debugging the PHC when writing a new driver. I figured that it might be
handy for the LinuxPTP project to include, as it can give some insight
into the PHC directly. I have updated it to make use of the shared code
here, in order to reduce duplication. Hopefully this is of some use to
everyone.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Always disable the clock sanity check when the ntpshm servo is used,
because it doesn't know when or how is the clock adjusted. Disable also
the kernel leap option as the process controlling the clock is
responsible for setting the kernel flag.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
When leap second is inserted/deleted to the reference time, adjust the
reference point as if the clock was stepped in the opposite direction to
keep the slope and error statistics valid and correct the offset
gracefully.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
Introduce a new function to inform the servo about upcoming leap second.
This is used when the kernel leap is disabled to allow the servo to
handle better the sudden 1 second step in the offset when the leap
second is inserted or deleted.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
After moving the leap second check away from update_pmc(), the time
stamp is used only to control the pmc update interval. Switch to
CLOCK_MONOTONIC to keep the interval stable when CLOCK_REALTIME is
stepped.
When synchronizing the system clock and the PTP UTC offset is valid and
traceable, set the TAI offset of the clock to have correct CLOCK_TAI
(which is implemented in the kernel as CLOCK_REALTIME + TAI offset).
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
This simplifies passing of pending leap seconds to the clocks and it
will also allow to apply leap second to other clocks than system clock
if needed in future.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
This is a simple servo that provides the NTP SHM reference clock. It
doesn't make any clock adjustments and it always returns with the
unlocked state. It writes all samples to the SHM segment and another
process (e.g. chronyd or ntpd) is needed to read the samples and
actually synchronize the clock. The SHM segment number is set to the PTP
domain number to allow multiple SHM reference clocks running at the same
time.
This is mainly useful when other time sources are available on the
system (e.g. NTP, hardware reference clocks, or other PTP domains)
and a fallback to/from PTP is needed.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
When grandmaster does not use PTP timescale but the previous one did, we
need to reset sync offset and leap flag.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
By default, do not synchronize CLOCK_REALTIME. To do it, -r option is
needed. That will only consider CLOCK_REALTIME as the destination. To
consider it also as a possible time source, use -rr.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Recognize errors returned in MANAGEMENT_ERROR_STATUS TLV and return
a distinct value from run_pmc in case such error is received.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Add support for subscribing to events (run_pmc_subscribe) and receiving and
handling of received events (run_pmc_events).
Add initial support for port status changes.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Implement pmc_target_port to set a port number, leaving clock identity
unchanged, and pmc_target_all to set clock identity and port number to all
1's.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Do not call clock_open to open a clock device but let clock_add do that and
return the newly created struct. Also, store the device (interface) name in
struct clock.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
This just moves code around to have related functions together and forward
declaration at the beginning of the file. No code changes.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
For now, only CLOCK_REALTIME can be UTC. This may stay this way forever but
now we have a clean separation between codepaths where CLOCK_REALTIME is
required and codepaths any UTC clock should take.
The main motiviation behind this change is removal of sync_offset_direction.
It has to be computed on the fly based on the source and destination when we
have multiple clocks supported and automatic following of ptp4l state
changes implemented.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Split members that apply to all synchronized clocks and members that apply
to an individual clock. Keep all clocks in a list, with a pointer to the
source clock. This will allow to support multiple clocks synchronization.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Split the generic (global) part of update_sync_offset and the part that
affects individual clocks. This is in preparation for phc2sys handling
synchronization of more clocks.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Make run_pmc usable for any kind of management message. Create wrappers for
waiting for ptp4l and for getting UTC offset.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
The sanity_freq_limit field was erroneously added to the config struct
in ed379b40, the right one is in the default_ds struct.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
This patch modifies the hwtstamp_ctl program, so that it will (attempt
to) use the SIOCGHWTSTAMP ioctl to non-destructively read the current
hardware timestamping policy, prior to setting it with SIOCSHWTSTAMP.
This change has 3 primary advantages:
1) It allows reading the current settings of the device, which was
previously not possible since SIOCSHWTSTAMP is destructive.
2) The default behavior without rx-filter or tx-type selected on the
command line is no longer destructive, since it does not attempt to
set the values to 0. The user must explicitly request to disable the
settings, by using the provided options.
3) It allows only modifying tx-type or rx-filter separately, without
destroying the other setting.
This patch supersedes a previous submission which added a -g flag. This
new method of getting first is more advantageous and doesn't require
adding an additional option flag.
- v4
* only display results if command succeeds, as the contents are otherwise
expected to be identical to what we passed in.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
In order to allow hwtstamp_ctl to use the non-destructive SIOCGHWTSTAMP
ioctl, we need to add it to missing.h, in order to prevent build failure
on older kernels which don't have this support.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
This was broken in commit e804e6, ifa_addr is a pointer to sockaddr,
it shouldn't be referenced for the memcpy call.
Acked-by: Jiri Benc <jbenc@redhat.com>
Split management message creation to more fine-grained functions to allow
notification messages to be created.
The new clock_management_fill_response is called from
clock_management_get_response (so the function behaves exactly the same as
before this patch) and from a new clock_notify_event function. The
difference is clock_management_get_response uses the request message to
construct the reply message, while clock_notify_event constructs the reply
message based on the notification id.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Split management message creation to more fine-grained functions to allow
notification messages to be created.
The new port_management_fill_response is called from
port_management_get_response (so the function behaves exactly the same
as before this patch) and from a new port_notify_event function. The
difference is port_management_get_response uses the request message to
construct the reply message, while port_notify_event constructs the
reply message based on the notification id.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Add expiration time to subscriptions; they need to be renewed before they
expiry. This way, the subscription automatically times out when phc2sys is
killed.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
This puts groundwork for event subscription and notification. The individual
events are added by subsequent patches.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
When phc2sys is started before ptp4l or it is interrupted before ptp4l has
a chance to reply to its query, the "uds: sendto failed: Connection refused"
message is output. This is not an interesting message.
Also, don't output the "failed to send message" error from pmc_send, as
all transports output errors in their send routine.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
This modifies all transports to use a new common address type, struct
address. This address is stored in a ptp_message for all received messages.
For sending, the "default" address is used with the default sending
functions, transport_send and transport_peer. The default address depends on
the transport; it's supposed to be the multicast address assigned by the
transport specification.
Later, a new transport_sendto function will be implemented that sends to the
address contained in the passed ptp_message.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
The callers of those functions are all using ptp_message. As we're going to
return more information (the address), let those functions just fill in the
ptp_message fields directly.
Some minor reshuffling needed to prevent circular header dependencies.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
In order to be able to convert to a generic address struct, separate source
and destination address into separate fields.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
When less bytes than the header size is read, do not indicate to the caller
that the read was successful, as the caller would read uninitialized memory.
To achieve that, subtract the header size unconditionally (unless an error
was returned by sk_receive).
In addition, do not check for Ethernet type when full Ethernet header was
not read. This again may lead to reading of uninitialized memory.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
The task of preparing the message for transmission and sending it appears
at many places. Unify them into a new function.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Jacob Keller
Miroslav Lichvar
Richard Cochran
Jiri Benc