If synchronizing a PHC to the system clock, use one of the
PTP_SYS_OFFSET ioctls (if supported) to measure the offset between the
two clocks. Negate the offset and switch the timestamp before passing
them to the servo.
This makes the synchronization between PHC and system clock symmetric.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
This is a more accurate variant of the the PTP_SYS_OFFSET ioctl, which
will probably be supported in future kernel versions.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
This ioctl uses cross timestamping for a more accurate measurement of
the offset. It is supported on some onboard Intel NICs using the e1000e
driver and a virtual PHC with the ptp_kvm driver.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
The kernel supports different PTP_SYS_OFFSET* ioctls. Use the sysoff
enum to allow selecting between them in sysoff_measure().
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
Added check so that convertion from a positive tmv not result in a negative TimeInterval and vice versa.
Signed-off-by: Anders Selhammer <anders.selhammer@est.tech>
I have reduced the requirements for the -p option to accept
any type of device. With this it should be possible to use
ptp4l to syncronize any clock device that implements the kernel
POSIX clock interface.
[ RC - Initialize struct timex. ]
Signed-off-by: Dimitrios Katsaros <patcherwork@gmail.com>
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
When inhibit_announce is set, ANNOUNCE_RECEIPT_TIMEOUT_EXPIRES event is
still sent once every state change. Avoid this by explicitly sending
EV_NONE instead.
[ RC - Simplify and keep all of the timer's state maintenance. ]
Signed-off-by: Vedang Patel <vedang.patel@intel.com>
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
The "inhibit_announce" and "ignore_source_id" options were introduced
in order to support the automotive profile. That profile happens to
specify using the peer to peer delay mechanism, but there is no reason
to restrict them to that mechanism. As it now stands, enabling these
two options prevents E2E slaves from synchronizing. This patch fixes
the issue by checking the "ignore_source_id" option when accepting E2E
delay response messages.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
This commit adds example for configuring master and slave devices that
support features from the Automotive Profile.
Signed-off-by: Vedang Patel <vedang.patel@intel.com>
This config option will skip the source port identity verification in
the Sync and Follow_up messages. This option is needed when the announce
messages are disabled because the slave cannot know the identity of
master without announce messages.
This is required by Automotive Profile as part of skipping the Best
Master Clock Algorithm (BMCA).
Signed-off-by: Vedang Patel <vedang.patel@intel.com>
This option will accomplish 2 things. On the master, it will stop the
announce messages being sent (by disabling FD_MANNO_TIMER timer). On
slave, it will not configure announce message timeouts (by disabling
FD_ANNOUNCE_TIMEOUT timer).
This config option is needed for the Automotive profile as part of
skipping the Best Master Clock Algorithm (BMCA).
Signed-off-by: Vedang Patel <vedang.patel@intel.com>
This adds config option to specify static roles for master and slave
in the Best Master Clock Algorithm. This is the case for Automotive
Profile where networks are mostly static and role for each device is
known in advance.
masterOnly and slaveOnly will be used to determine the roles for the
devices. Since masterOnly is a per-port config and slaveOnly is a global
config option, role assignment will be slightly odd in case of bridges.
If slaveOnly is set to 1, all the ports will be in slave roles except
for the ones where masterOnly is set to 1. These ports will assume the
master role.
Two new FSMs which will be used for master and slave roles for this
config option have also been added.
Signed-off-by: Vedang Patel <vedang.patel@intel.com>
If set to 'true', this unconditionally sets the asCapable variable. The
usual checks will be applied to asCapable if it is set to 'auto'. The
default value is 'auto'.
This config option is needed by the Automotive Profile. The master will
be able to send out Sync Message as soon as the daemon is started.
Signed-off-by: Vedang Patel <vedang.patel@intel.com>
This scenario will only be encountered when the clock transitions to the
slave state without knowing who the master is.
This will result in a segfault for BMCA with designated master and slave
states (to be added in upcoming patches).
Signed-off-by: Vedang Patel <vedang.patel@intel.com>
If foreign clock is NULL, both the clocks are obviously not equal. So,
return 0 in that case.
The above condition (fc == NULL) is not currently encountered. It will
be encoutered in the next few patches which implement static roles for
master and slave.
Signed-off-by: Vedang Patel <vedang.patel@intel.com>
Remove > from beginning of lines specified in the *.conf sections in
order to allow a ptp4l-specific section (e.g. [unicast_master_table]) to
be included there.
After inserting the lines to the generated ptp4l.conf, switch back to
the [global] section.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
Don't postpone processing of a timeout if it is equal to the current
time. This prevents an infinite loop with a simulated clock.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
Currently the clockIdentity is generated from the mac address of the first
interface/port in config file. This patch add the possibility to set it in
config file.
The reason is if the stack is restarted with a different set of ports, it
may be circumstances when clockIdentity needs to be equal as before
restart even if the port setup is different.
Signed-off-by: Anders Selhammer <anders.selhammer@est.tech>
Add attribute maxStepsRemoved which is included in IEEE1588-2017 (v2.1)
It is an optional attribute which can decide if an Announce message is
considered in the operation of the BMCA or not.
Signed-off-by: Anders Selhammer <anders.selhammer@est.tech>
Add global option for the hardware time stamp setting.
The function could:
Normally set the filters as the PTP daemon require.
Check that the filters are proper but do not change them.
Full, set the RX filter to all and the TX filter as the PTP daemon require.
[ RC: added missing extern keyword and fixed indentation. ]
Signed-off-by: Erez Geva <erez.geva.ext@siemens.com>
Signed-off-by: Erez Geva <ErezGeva2@gmail.com>
The sub agent use net-snmp library and AgentX protocol for the
communication towards the snmp master agent.
snmpd.c should only include general setup needed for handling snmp.
Supported MIBs should be implemented in separate files.
Makefile will include snmpd if libsnmp is available during compilation.
configs/snmpd.conf should be placed in /etc/snmp/
Signed-off-by: Anders Selhammer <anders.selhammer@est.tech>
In port_management_fill_response() the TLV descriptor leaked when
not responding.
In port_open() the port would leak with the unsupported management clock
type.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
When using peer to peer one step mode, the normal time stamp handling
of peer delay request messages is bypassed. The hardware subtracts
the ingress time stamp from the correction field and then adds the
egress time into the correction of the response. The configured
latency values are never applied since the hardware has no knowledge
of them. This patch adds in the correction values in this special
case.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
The default initial value for logAnnounceInterval should be 0 (once per second).
See chapter 10.6.2.2 of IEEE 802.1AS standard.
Signed-off-by: Christoph Seifert <christoph.seifert@posteo.me>
These functions are just wrappers. Make it possible for the compiler to
optimize the calls when compiled with optimization.
Signed-off-by: Michael Walle <michael@walle.cc>
The field is redundant with the length tlv_list. Replace it with a
function msg_tlv_count() instead. This iterates over the tlv_list. The
computational overhead should be small, because the lists are very short
and the tlv_count is only used in management paths (yet).
Signed-off-by: Michael Walle <michael@walle.cc>
Since commit 7fe69e7ba0 management
messages are dropped in some cases because the tlv_count isn't 1.
Further analysis shows that this is the case when the message is
forwarded in clock_forward_mgmt_msg(). This is because msg_post_recv()
will append TLVs and - in the forwarding case - there is already one TLV
in the list, which results in tlv_count being 2 and thus dropped in
subsequent code.
msg_post_recv() is intended to be the cleanup code for msg_pre_send()
which is called earlier. Therefore, make msg_post_recv() and
msg_pre_send() symmetrical and cleanup the tlv_list and tlv_count.
Signed-off-by: Michael Walle <michael@walle.cc>
TRUE and FALSE is also defined in net-snmp library. Without this check,
compilation and includes must be made in a certain order.
Signed-off-by: Anders Selhammer <anders.selhammer@est.tech>
This patch adds new code that handles unicast service contracts,
sending messages according the negotiated schedule.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Miroslav Lichvar
Anders Selhammer
Dimitrios Katsaros
Vedang Patel
Richard Cochran
Cliff Spradlin via Linuxptp-devel
Ethel Nilsson
Erez Geva
Christoph Seifert
Michael Walle
Andriy Kohut