The pp_links mechanism, currently based on /etc/ppsi.conf file, shall not
be mandatory, since not all archs will use it. Thus, this patch reduces
at its minimum the dependency on ppi->nlinks. If an arch is not using
the pp_links, it just has to define nlinks=0 in pp_globals struct, and
the engine will work as well, assuming one pp_instance has been
configured in the main.
Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

No functional modification at all.
Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

The same values used in ptp-noposix are copied here.
Reference file in ptp-noposix is PTPWRd/constants.h, last changed by
commit f57bc6cd.
Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

A shorter interval between delay req messages leads to a faster
synchronization. This parameter was increased in the past because of some
stability issues, but at present it can be changed back to the
same value as ptp-noposix.
Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

Sometimes the macros may already be defined (e.g.: arch-bathos).
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This allows the arch-specific Makefile to set CONFIG_NO_PRINTF, it it
knows no printf is needed from ppsi (applies to wrpc and bathos).
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Some compilers complain about using "%i" with Integer32, so cast it
away. Which is bad in itself, but I see no other clean option;
fortunately, it's only diagnostic messages.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

stay in sync.

We need to make WR-specific things while managing the time
and network operations (even if proto-ext-whiterabbit does most
of the stuff without calling the time operations).

Thus, open-code the wrs operation, even if temporary they
just call the unix ones (which, however, are static to their
own files, and only the overall data structure is exported).
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Otherwise, a non-superuser Unix run takes 100% cpu time sending
to stderr the same error forever.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

The addition of a trailing \n (suggested by me) cannot be made
if in /etc/ppsi.conf exists: configuration is a constant string

This also simplifies the code and makes better error management: we
can use fprintf here, and fopen/fread as well.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This fixes a bug which was introduced in commit 75eb932e and found out
(together with the proposed solution) by Alessandro Rubini.
Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

This patch permits to properly parse ppsi.conf files even if it is
not terminated with a newline. Thanks to Alessandro Rubini for the hint.
Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

The core of server functionality is in wrs-ipcserver.c, which
basically consists of a porting of PTPWRd/ptpd_exports.[ch], as they are
seen in commit 080d54fb of the repository:
git://ohwr.org/white-rabbit/ppsi/ptp-noposix.git

Two notes:
- this implementation, like the one I'm porting from, does not make use
of minipc_server_get_fdset, which would make the minipc_server_action
be called only when necessary (by means of a select); indeed,
minipc_server_action is called at each cycle in the main loop;
- the server is created by using "ptpd" as its mnemonic name, for
compatibility with ptp-noposix.
Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

Some archs (e.g. wrs does) may need to force the usage of a specific
extension, so include extension Makefile after arch Makefile, so that
arch Makefile can modify PROTO_EXT env var.
Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

wr_servo_enable_tracking function will be used by arch-wrs, so define it
in wr-api.h.
Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

Since ppsi-wrs.h is used by time-wrs files too, move it in include
directory.
Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

All the placeholders in wrs-time.c and wrs-calibration.c are here
filled with their proper implementation.

Note: some functions were already implemented in commit 19a203b4.
Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

Since the hal client is called in two places
(arch-wrs/wrs-calibration.c and time-wrs/wrs-time.c), put what is common
in the general include file provided by arch-wrs. Indeed this file
should be moved to arch-wrs/include (will be done in one of the
next commits).
Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

hal_exports.h is copied from commit c8ac96b4,
repository git@ohwr.org:white-rabbit/wr-switch-sw.git
Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>

Signed-off-by: Aurelio Colosimo <aurelio@aureliocolosimo.it>