The clock code uses two different variables to store the TAI-UTC
offset. One variable represents the compile time, configuration file,
or command line initial UTC offset, while the other is used when
taking on the GM role and is settable at run time. However, making
this distinction makes no sense. This patch simplifies and clarifies
the code by using a single variable for the offset.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
The current implementation of ptp4l always assumes 6 octets MAC
address, which is correct for Ethernet interfaces but not for IPoIB
interfaces (that have 20 octets MAC), therefore running ptp4l over
IPoIB interface does not function correctly.
In Infiniband, every interface has three identifiers:
GUID, GID, and LID.
The GUID is similar in concept to a MAC address. From RFC4392:
The EUI-64 portion of a GID is referred to as the Global Unique
Identifier (GUID) and is the only persistent identifier of a port.
Therefore, to support IPoIB interfaces, the GUID of the port should
be used instead of the MAC.
This patch checks the interface type before creating the clock identity,
for Infiniband ports, it retrieves the GUID of the port using sysfs
and use it to create the clock identity.
sysfs method was chosen since the GUID is the 6 lsb bytes of
the 20 byte device address, and SIOCGIFHWADDR ioctl call returns
the 14 msb bytes of the device address, so it is not possible to
get the GUID using SIOCGIFHWADDR ioctl call.
[ RC: fixed trivial coding style error, space after switch keyword. ]
Signed-off-by: Feras Daoud <ferasda@mellanox.com>
Reviewed-by: Alex Vesker <valex@mellanox.com>
With rtnl socket we can track link status per port(except UDS port).
We can make sure we get the correct interface and latest status with function
port_link_status().
At the same time we need to set clock sde after link down. But we return
EV_FAULT_DETECTED in port_event(), which will not set clock sde. So we need
to set it in port_link_status().
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Unfortunately uClinux is rather inconsistent with respect to
clock_nanosleep(). Older versions of uclibc lack that function, while
newer versions may include the declaration but still lack the
definition, depending on whether pthreads are selected in the
configuration.
This patch works around uClinux shortcomings by using the library call
when available at compile time, otherwise falling back to syscall().
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
If handle unknown management tlv. The management message id and format are
also unknown, thus we may crash due to access unknown area.
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
TLV_PRIORITY1 and TLV_PRIORITY2 cases in do_set_action() use the same repeated
piece of generic code for setting one-value parameter. Remove the duplicated
code and let both cases use the same code.
Signed-off-by: Petr Kulhavy <brain@jikos.cz>
The calls to snprintf() to format /dev/phc%d use the wrong pattern.
That function always properly terminates the string with null.
However, the code passes a hard coded length of 31 to static arrays of
length 32. While this is not a bug, there are two issues here.
First, any (improbable) future increase in the array lengths would
have to also remember to fix up the snprintf() call site as well.
Secondly, the pattern of using buf[N] and then length=N-1 is
appropriate for strncpy(), but is useless for snprintf().
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Reported-by: Petr Kulhavy <brain@jikos.cz>
On some platforms clock_adjtime is defined in timex.h instead of time.h
Due to this fact the detection in incdefs.h was failing.
Add timex.h into the list of searched files.
Signed-off-by: Petr Kulhavy <brain@jikos.cz>
On some platforms like br-arm-cortex-a9-musl struct ethhdr was defined twice
due to including of both linux/if_ether.h and netinet/ether.h. Which lead
to a compilation error.
Remove netinet/ether.h as the official header for struct ethhdr is
linux/if_ether.h
Signed-off-by: Petr Kulhavy <brain@jikos.cz>
Fixes the following build errors seen with musl-libc:
In file included from print.h:25:0,
from linreg.c:24:
util.h:364:32: error: unknown type name 'time_t'
int rate_limited(int interval, time_t *last);
Signed-off-by: Stephen Walker <stephendwalker+github@gmail.com>
[florian: extract patch from OpenWrt, add commit message]
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
If the len is not enought for another tlv process. e.g. one more bytes
padding at the end of message. And we set extra to NULL instead of
msg->last_tlv in tlv_post_recv(). Then the msg->last_tlv will not be
initialised. And program will crash if we read msg->last_tlv. e.g. in
function pmc_show().
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
netdb.h pulls in a large chain of include files:
rpc/netdb.h
rpc/types.h
rpc/types.h re-defines TRUE/FALSE and does it in this way:
#ifndef FALSE
# define FALSE (0)
#endif
#ifndef TRUE
# define TRUE (1)
#endif
And this later causes build problems that appear in this way:
mipsel-linux-gnu-gcc -Wall -DVER=1.8 -D_GNU_SOURCE -DHAVE_CLOCK_ADJTIME
-DHAVE_POSIX_SPAWN -DHAVE_ONESTEP_SYNC -Os -pipe -mno-branch-likely
-mips32r2 -mtune=24kc -fno-caller-saves -Wno-unused-result
-D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro
-I/home/florian/dev/openwrt/trunk/staging_dir/target-mipsel-unknown-linux-gnu_glibc/usr/include
-I/home/florian/dev/openwrt/trunk/staging_dir/target-mipsel-unknown-linux-gnu_glibc/include
-I/home/florian/dev/toolchains/stbgcc-4.8-1.5/usr/include
-I/home/florian/dev/toolchains/stbgcc-4.8-1.5/include
-DHAVE_CLOCK_ADJTIME -DHAVE_POSIX_SPAWN -DHAVE_ONESTEP_SYNC -c -o
udp.o udp.c
In file included from
/home/florian/dev/openwrt/trunk/staging_dir/target-mipsel-unknown-linux-gnu_glibc/usr/include/rpc/netdb.h:45:0,
from
/home/florian/dev/toolchains/stbgcc-4.8-1.5/mipsel-linux-gnu/sys-root/usr/include/netdb.h:32,
from udp.c:23:
pdt.h:25:7: error: expected identifier before '(' token
enum {FALSE, TRUE};
^
<builtin>: recipe for target 'udp.o' failed
Upon inspection, it does not appear that netdb.h is providing any useful
definition or declaration, so let's just remove its inclusion.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
After a servo jump, the call to tsproc_reset() clears tsp->t3. This
causes the next call to tsproc_update_offset() to fail. However the
offset calculation does not necessarily depend on t3, i.e. when
filtered_delay is available and neither raw nor weighting is used.
This patch fixes the issue by allowing the stored filtered delay to be
used when appropriate.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Reported-by: Burkhard Ilsen <burkhardilsen@gmail.com>
The time stamp processor features four modes resulting from the
combination of two independent Boolean options. Even though we have a
proper enumerated type to represent the mode, still the code coverts
the mode into two variables.
The tests on the variables are currently simple enough, but soon we
will want to add some more complexity. In the interest of clarity,
this patch converts the paired Boolean tests into a switch/case
pattern.
No functional change.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
We will want to test whether a valid filtered delay value has been
calculated or not. However, we cannot simply test for zero since that is
a legitimate possible delay value. This patch adds a flag that reflects
the state of the filtered delay field.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
The sequence of port_nrate_calculate() and tsproc_update_delay()
in port_peer_delay() is mixed up.
The peer delay depends on the nrate ratio so the nrate ratio
shall be updated before peer delay is calculated.
Signed-off-by: Burkhard Ilsen <burkhardilsen@gmail.com>
The servo constructors might return a NULL pointer.
The function servo_create() uses servo without checks.
Signed-off-by: Burkhard Ilsen <burkhardilsen@gmail.com>
When ptp4l is using multiple interfaces sharing the same clock, phc2sys
in the automatic mode should not try to synchronize them to each other.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
Reported-by: Stefan Lange <s.lange@gateware.de>
Having one fewer port may affect the result of the BMCA. This patch
changes the main loop so that a link down event also causes a state
decision event.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Reported-by: Henry Jesuiter <Henry.Jesuiter@alcnetworx.de>
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>
When an interface doesn't support HW time stamping, before falling back
to SW time stamping, check if it's actually supported and exit with an
error message if not.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
Use the new options of ptp4l and phc2sys to tag their log messages with
the PTP domain number and name(s) of interface(s) in the domain.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
When running multiple instances of ptp4l or phc2sys, it's difficult to
tell which log message belongs to which instance. Add new options to
ptp4l and phc2sys which can specify a tag for all messages printed to
the standard output or system log, so messages from different instances
can have different tags.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
Currently UTC offset is defined as a constant - CURRENT_UTC_OFFSET, and if
a leap second is added, that constant is no longer valid. Ptp4l was
updated to read the UTC offset from configuration instead.
Signed-off-by: Viliam Lejcik <viliam.lejcik@kistler.com>
The state machines in 1588 do not specify an event that causes a transition
out of the initializing state. This was left as a local issue. For this
transition, the current code assigns the next state outside of the FSM. But
doing so prevents an alternative FSM to handle this transition differently.
By introducing a new event, this patch places this transition where it
belongs, namely under the control of the FSM code,
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Although leaving the INITIALIZING state and clearing the FAULTY state
ASAP both result in a port entering the LISTENING state, still there
is no benefit from conflating the two. In the FAULTY case, the
current code actually skips the INITIALIZING state altogether.
This patch separates the two cases resulting in two benefits. First,
the check for ASAP fault status is only made when a fault is actually
present, unlike the present unconditional check. Second, this change
will allow us to cleanly support alternative state machines later on.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
The code that decides whether a fault qualifies for ASAP treatment is
a tangle of logical operators. This patch replaces the open coded
logic with a helper function whose name makes the intent clear. This
is a cosmetic change only.
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>
A leap second was applied to UTC on 2016-12-31 and the offset between
TAI and UTC is now 37 seconds.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
The recent change allowing every configuration option to appear on the
command line wrongly used bitwise AND to set a flag. This patch fixes
the bug by using the proper bitwise OR idiom.
Signed-off-by: Richard Cochran <rcochran@linutronix.de>
Reported-by: Miroslav Lichvar <mlichvar@redhat.com>
Fixes: 4e8dbd8 ("ptp4l: Accept any configuration option as a command line argument.")
This patch makes the build system less surprising by removing the
executable binaries in the 'clean' target. This behavior is more in
line with the GNU makefile guidelines.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Suggested-by: Manuel Traut <manut@linutronix.de>
This patch provides a way to use the entire table of configuration options
as "long" command line switches.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Poll for link up/down events. When a link goes down, the port becomes
faulty until the link goes up again. We keep the fault timer from the
existing fault detection, but a downed link prevents clear the fault.
The new state machine is depicted in this ascii art diagram:
+--------+ Fault +---------+
| |------------>| |
| UP | | FAULT |
| |<------------| |
+--------+ Timeout +---------+
A | /
| | /
Link-Up | | Link-Down /
| | /
| V /
+--------+ / Link-Down
| | /
| DOWN |<--------/
| |
+--------+
If the fault timer occurs in the DOWN state, we simply ignore it.
After all, without the link the port is useless.
There is one case where the new code changes the existing behavior.
If the link quickly does down and then up again while another fault
(and its timer) are active, then we will enter the UP state without
waiting for the fault timer expiration. However, this behavior is
acceptable because when a link goes up, you are starting with a clean
slate.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
We use a hash table to remember the mapping. Since our existing hash
table is a simply string hash, we convert the integer index into a decimal
string. Although hashing integers in this way is sub-optimal, the table
will not be used in a performance critical path.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Richard Cochran
Feras Daoud
Hangbin Liu
Cliff Spradlin via Linuxptp-devel
Brian Olson
Petr Kulhavy
Stephen Walker
Florian Fainelli
Burkhard Ilsen
Miroslav Lichvar
Viliam Lejcik
Richard Cochran