A single, external PTP Hardware Clock device may be wired to one or more
MAC devices, providing the MACs with an input clock. This patch adds
support for such a hardware architecture by letting the command line PHC
override the one discovered via the ethtool ioctl.
Signed-off-by: Richard Cochran <richardcochran@gmail.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>
This patch adds code that sends an event messages received on one port out
all the other ports and calculates the residence time. The correction,
ingress port, and the original message are remembered in a TC transmit
descriptor. These descriptors are recycled in a memory pool in a similar
way to the message buffers.
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>
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 global function used to return an error code, but now it always
returns zero. This patch converts the function signature to return void
and simplifies the main clock loop by removing the useless test.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Looking at the fault logic in port_dispatch(), you might think that
the function, fault_interval(), checks whether a fault is active, but
you would be wrong, since that function always returns zero.
This patch removes the superfluous input error checking inside of
fault_interval() and changes the return type to void, making the
actual behavior explicit. Dropping the input check is safe because
that function has exactly two callers, both of whom always provide
valid inputs.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Remove the limit of MAX_PORTS ports (default 8) and keep the ports in
a linked list. This allows ptp4l to be used on large machines and in the
future, it will allow dynamic adding and removing of ports while ptp4l is
running.
For this to work, pollfd needs to be dynamically allocated. Changed pollfd
handling from clock_install_fda/clock_remove_fda to notification
(clock_fda_changed), where the clock will rebuild pollfd by querying all its
ports.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
The fault timer file descriptor is a per port item, put it inside struct
port where other per port file descriptors are kept.
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 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>
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>
According to 9.2.6.11 of the spec the ANNOUNCE_RECEIPT_TIMEOUT_EXPIRES
timeout in addition to announceReceiptTimeoutInterval includes a random
number up to one announceInterval.
Add a new function for setting random timeout and use it in
port_set_announce_tmo().
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
If the port resets itself after detecting a fault, then the polling events
for that port are no longer valid. This patch fixes a latent bug that
would appear if a fault and another event were to happen simultaneously.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
A timeout of 15 seconds is not always acceptable, make it configurable.
By popular consensus, instead of using a linear number of seconds, use
the 2^N format for the time interval, just like the other intervals in
the PTP data sets. In addition to numeric values, let the configuration
file support 'ASAP' to have the fault reset immediately.
[RC - moved the handling of special case tmo=0 and added a break out
of the fd event loop in case the fds have been closed.
- changed the linear seconds option to log second instead.
- changed the commit message to reflect the final version. ]
Signed-off-by: Delio Brignoli <dbrignoli@audioscience.com>
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
this patch allows each port to maintain its own pod structure since it is only
used in ports. This will allow the user to configure any special settings per
port. It takes a copy of the default pod, and a future patch will allow the
configuration file to set per-port specific changes
-v2
* Minor change to fix merge with previous patch
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
the port_open function takes a large number of command options, a few of which
are actually all values of struct interface. This patch modifies the port_open
call to take a struct interface value instead of all the other values. This
simplifies the overall work necessary and allows for adding new port
configuration values by appending them to the struct interface
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
This commit only adds support for forwarding the management messages.
The actual local effects of the management commands still need to be
implemented.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
If the new ethtool operation is supported, then use it to verify that the PHC
selected by the user is correct. If the user doesn't specify a PHC and ethtool
is supported then automatically select the PHC device.
If the user specifies a PHC device, and the ethtool operation is suppported,
automatically confirm that the PHC device requested is correct. This check is
performed for all ports, in order to verify that a boundary clock setup is
valid.
The check for PHC device validity is not done in the transport because the
only thing necessary for performing the check is the port name. Handled this
in the port_open code instead.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
The state machine needs to know whether a new master has just been
selected in order to choose between the slave and uncalibrated states.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
This commit also introduces clock and port objects, but only with the
minimal interface needed by the BMC.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Richard Cochran
Vedang Patel
Hangbin Liu
Jiri Benc
Miroslav Lichvar
Delio Brignoli
Geoff Salmon
Jacob Keller