Replaced usage of variable 'message_tag' with struct config item
'message_tag'. Original variable removed.
Signed-off-by: Peter Schneider <peter@psch.de>
Replaced usage of variable 'print_level' with struct config item
'logging_level'. Original variable still used for range checking.
Signed-off-by: Peter Schneider <peter@psch.de>
Replaced usage of variable 'domain_number' with struct config item
'domainNumber'. Original variable still used for range checking. Removed
(now obsolete) third parameter of init_pmc().
Signed-off-by: Peter Schneider <peter@psch.de>
When using long chains of transparent clocks, the recommended practice is
to measure the rate ratio without adjusting the local clock. Then the
residence times should be corrected to reflect the master's frequency.
This patch expands the clock_rate_ratio() method to provide the estimated
ratio when the clock is free running.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
If the "free_running" option is set, the "no adjust" calculates and
prints an estimation of the phase and frequency offsets to the remote
master. Because the phase estimate requires a delay measurement, this
calculation is not performed without having the delay estimate first.
However, a typical transparent clock application will want to use the
frequency offset to correct the residence times to match the master's
frequency.
This patch adds a call to the "no adjust" routine even if no valid
delay measurement has been made.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
The transparent clock will want to have two copies of certain messages,
one for forwarding and one for internal use (in the BMCA and for
syntonization). This patch add a function that duplicates a given
message, including all of the attached TLVs.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Now that we have a helper routine to find the suffix, use that instead of
open coding the same logic. This simplifies the code and consolidates the
definition of which message types are allowed to carry TLVs.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
When a messages is sent with the DEFER_EVENT flag, the lower transport
code does not fetch the time stamp right away. This patch introduces
a method that allows a second call to retrieve the waiting transmit
time stamp.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Up until now, the code has always fetched the time stamp immediately
after transmitting a message. However, a transparent clock will want
to forward a given incoming message out all egress ports with as
little delay as possible, in order to minimize the residence time of
the message within the switch.
This patch adds a new transmit mode for event messages that will be
used to signal the new behavior.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
The majority of the callers of transport_send() use hard coded magic
numbers. This patch fixes them to use the corresponding enumerated
values instead.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Originally the 'event' parameter to transport_send() was a single
Boolean flag. Over time, we grew an enumerated list of event
flavors, but the function signatures were never updated. This patch
changes the methods to use the proper type.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
When compiling with "-O1 -D_FORTIFY_SOURCE=1", gcc throws a false positive
warning. The code is not performance sensitive, so this patch silences
the warning by initializing the offending local variable explicitly.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
The PortAddress structure has no space for the actual address and should
be used only as a pointer to a larger buffer.
The issue was reported by gcc with enabled source fortification.
[ RC: Replace magic number with sizeof() macro. ]
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
The make install target tries to install a man page that does not
exist. This patch fixes the makefile to install the existing man
pages only.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
This patch makes a number of subroutines into global functions in order
to share code with the TC implementations to come.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
This patch places the internal port data structure into a common header
for use by the original BC and the new TC code.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
When computing the next port state based on a FSM event, much of the logic
will stay the same for OC, BC, and TC nodes.
- handling a fault ASAP
- INITIALIZING state handling
- showing the transition in the log
- sending notifications
This patch moves this common code into a global port method, making it
available to future TC implementations.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
This paves the way to allow different implementations for the upcoming
Transparent Clock code.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Instead of using a hard coded algorithm, let the caller provide the
function that performs the comparison. This will allow implementing
alternative algorithms from PTP profiles.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
The logic that adds TLVs to the end of a message mixes up the 'L'
length in "TLV" with the total TLV length. As a result, the second
and subsequent TLVs will corrupt the previous TLV in the buffer. This
patch corrects the code to find the correct offset for the second and
following appended TLVs.
Note that the stack does not currently trigger this latent bug because
only single TLVs are appended.
Fixes: 4a8877f904 ("msg: Introduce method for appending multiple TLVs on transmit.")
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Valgrind complains about memory leaks, none of which are serious. This
patch frees the allocations on exit, so that any future *real* memory leaks
will be obvious in the valgrind report.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
We will want to use this macro in more than one source file. This patch
moves the macro into the common header for possibly undefined code.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Valgrind is complaining that the pmc program is using uninitialized
data. Actually the data are partially initialized, but it can't hurt
to zero the entire data structure. Doing so silences the valgrind
warning, and after all it is good practice.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Up until now, one step operation was controlled by a combination of
options, namely time_stamping=hardware with twoStepFlag=0. The
introduction of peer to peer one step makes the situation a bit more
complicated.
This patch adds support for setting the one step options directly by
using the "time_stamping" option. The "twoStepFlag" is adjusted
automatically if needed. The legacy behavior for Sync message one
step is preserved.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
The 1588 standard defines one step operation for both Sync and
PDelay_Resp messages. Up until now, hardware with P2P one step has
been rare, and kernel support was lacking. This patch adds support of
the mode in anticipation of new kernel and hardware developments.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
On the transmit path, the port-level code calls msg_sots_missing()
directly, but on receive this check is buried in the message layer.
With the coming addition of peer to peer one step, the ingress check
will need knowledge of the configured time stamping option. This
patch moves the check in order to accommodate the exceptional case.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
I stumbled across a kernel commit that fixes the macro that convert
between file descriptors and clock ID types (see below). This patch
corrects the FD-to-clockid macro by casting to unsigned before
shifting.
commit 29f1b2b0fecfae69e31833836f1da3136696eee5
Author: Nick Desaulniers <nick.desaulniers@gmail.com>
Date: Thu Dec 28 22:11:36 2017 -0500
posix-timers: Prevent UB from shifting negative signed value
Shifting a negative signed number is undefined behavior. Looking at the
macros MAKE_PROCESS_CPUCLOCK and FD_TO_CLOCKID, it seems that the
subexpression:
(~(clockid_t) (pid) << 3)
where clockid_t resolves to a signed int, which once negated, is
undefined behavior to shift the value of if the results thus far are
negative.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Make the log output a bit more clear by changing how we inform the user
when the local clock is the best master clock. This allows easier
parsing of the log and identifying when the local clock is being
selected as the best clock.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
[ RC - Correct the punctuation and abbreviation. ]
Signed-off-by: Peter Schneider <peter@psch.de>
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
[ RC: - Add new flag into usage message.
- Fix up coding style of the automatic variables. ]
Signed-off-by: Peter Schneider <peter@psch.de>
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
pmc_create() calls transport_create(), which sets the open function
for the interface 'iface' to raw_open(), if Layer 2 is used. The
immediate following call of transport_open() calls raw_open(), which
uses the field .ts_label for opening, instead of the field .name
(which is used in the other transport layers). Therefore, the
field .name is copied here into the field .ts_label .
[ RC - Actually ts_label should always be initialized. Made the
assignment of ts_label unconditional, regardless of the choice
of transport layer. ]
Signed-off-by: Peter Schneider <peter@psch.de>
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
In a ptp unaware network (like the telecom profile for frequency sync
G.8265.1), both the RTD and the PDV can be substantially higher than
in a ptp aware network. To achieve more accurate measurements, the
rate may need to be configured higher to get more data and increase
the chance of lucky packets.
In a combination of a high configured rate of delay_req and high
RTD/PDV in network, the risk that the response from the previously
sent delay_req have not been received before a new delay_req is sent
also become high. In that case, the need of storing more than the
latest sent delay_req arise.
This patch adds a queue for sent delay requests so several request can
be ongoing in parallel. When a delay response is received, a matching
request will be searched for in the queue and after processed removed
from the queue.
The stored delay_req will be removed if older than 5 seconds. Check is
made before a new delay_req is sent or announce receipt tmo expires.
Signed-off-by: Anders Selhammer <anders.selhammer@est.tech>
The function ts_to_Timestamp() is now just a wrapper around
tmv_to_Timestamp(). Simplify code by using tmv_to_Timestamp()
directly.
Signed-off-by: Michael Brown <mbrown@fensystems.co.uk>
Convert a software timestamp to the internal tmv_t representation at
the earliest possible opportunity, to match the behaviour for hardware
timestamps.
Signed-off-by: Michael Brown <mbrown@fensystems.co.uk>
Convert a hardware timestamp to the internal tmv_t representation at
the earliest possible opportunity. This allows us to:
- eliminate multiple redundant calls to timespec_to_tmv()
- use tmv_add() instead of open-coded manipulation of a struct
timespec in ts_add()
- use tmv_to_Timestamp() instead of open-coded manipulation of a
struct timespec and struct Timestamp in ts_to_Timestamp()
- use tmv_is_zero() instead of open-coded manipulation of a struct
timespec in msg_sots_valid()
Signed-off-by: Michael Brown <mbrown@fensystems.co.uk>
The function ts_to_timestamp() currently performs open-coded
manipulation of a struct timespec and struct Timestamp instead of
using the tmv_t abstractions.
Prepare for the removal of this code by matching the calling
convention for tmv_to_Timestamp(): returning a struct Timestamp rather
than accepting a pointer to a struct Timestamp.
Signed-off-by: Michael Brown <mbrown@fensystems.co.uk>
The function ts_add() currently performs open-coded manipulation of a
struct timespec instead of using the tmv_t abstractions.
Prepare for the removal of this code by storing ingressLatency and
egressLatency as corrections (matching the behaviour for
delayAsymmetry).
Signed-off-by: Michael Brown <mbrown@fensystems.co.uk>
The function clock_check_ts() performs open-coded manipulation of a
struct timespec instead of using the tmv_t abstractions.
Use the existing tmv_t abstractions to convert from struct timespec to
nanoseconds, and modify the prototype of clock_check_ts() to match
that of the underlying clockcheck_sample().
Signed-off-by: Michael Brown <mbrown@fensystems.co.uk>
This patch adds a new "NSM" program. The new code handles only one
outstanding NSM command at a time. If and when all four event time
stamps have arrived, the code prints the instantaneous estimated
offset without any averaging or smoothing.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
The file, pmc.c, contains utility functions for printing out a port address
structure. We will want to call these functions from pmc_common.c, and so
this patch moves the utility functions where they belong.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
When NSM is enabled on a given port, that port always replies to a NSM
delay request with a delay response, sync, and follow up, regardless
of the current state of the port.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Peter Schneider
Richard Cochran
Anders Selhammer
Miroslav Lichvar
Jacob Keller
Michael Brown