selftests: ptp: Add Physical Hardware Clock test

Test the PTP Physical Hardware Clock functionality using the "phc_ctl" (a
part of "linuxptp").

The test contains three sub-tests:
  * "settime" test
  * "adjtime" test
  * "adjfreq" test

"settime" test:
  * set the PHC time to 0 seconds.
  * wait for 120.5 seconds.
  * check if PHC time equal to 120.XX seconds.

"adjtime" test:
  * set the PHC time to 0 seconds.
  * adjust the time by 10 seconds.
  * check if PHC time equal to 10.XX seconds.

"adjfreq" test:
  * adjust the PHC frequency to be 1% faster.
  * set the PHC time to 0 seconds.
  * wait for 100.5 seconds.
  * check if PHC time equal to 101.XX seconds.

Usage:
  $ ./phc.sh /dev/ptp<X>

  It is possible to run a subset of the tests, for example:
    * To run only the "settime" test:
      $ TESTS="settime" ./phc.sh /dev/ptp<X>

Signed-off-by: Shalom Toledo <shalomt@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shalom Toledo 2019-06-11 18:45:12 +03:00 committed by David S. Miller
parent 412cd2ad18
commit 9366211f32

View file

@ -0,0 +1,166 @@
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
ALL_TESTS="
settime
adjtime
adjfreq
"
DEV=$1
##############################################################################
# Sanity checks
if [[ "$(id -u)" -ne 0 ]]; then
echo "SKIP: need root privileges"
exit 0
fi
if [[ "$DEV" == "" ]]; then
echo "SKIP: PTP device not provided"
exit 0
fi
require_command()
{
local cmd=$1; shift
if [[ ! -x "$(command -v "$cmd")" ]]; then
echo "SKIP: $cmd not installed"
exit 1
fi
}
phc_sanity()
{
phc_ctl $DEV get &> /dev/null
if [ $? != 0 ]; then
echo "SKIP: unknown clock $DEV: No such device"
exit 1
fi
}
require_command phc_ctl
phc_sanity
##############################################################################
# Helpers
# Exit status to return at the end. Set in case one of the tests fails.
EXIT_STATUS=0
# Per-test return value. Clear at the beginning of each test.
RET=0
check_err()
{
local err=$1
if [[ $RET -eq 0 && $err -ne 0 ]]; then
RET=$err
fi
}
log_test()
{
local test_name=$1
if [[ $RET -ne 0 ]]; then
EXIT_STATUS=1
printf "TEST: %-60s [FAIL]\n" "$test_name"
return 1
fi
printf "TEST: %-60s [ OK ]\n" "$test_name"
return 0
}
tests_run()
{
local current_test
for current_test in ${TESTS:-$ALL_TESTS}; do
$current_test
done
}
##############################################################################
# Tests
settime_do()
{
local res
res=$(phc_ctl $DEV set 0 wait 120.5 get 2> /dev/null \
| awk '/clock time is/{print $5}' \
| awk -F. '{print $1}')
(( res == 120 ))
}
adjtime_do()
{
local res
res=$(phc_ctl $DEV set 0 adj 10 get 2> /dev/null \
| awk '/clock time is/{print $5}' \
| awk -F. '{print $1}')
(( res == 10 ))
}
adjfreq_do()
{
local res
# Set the clock to be 1% faster
res=$(phc_ctl $DEV freq 10000000 set 0 wait 100.5 get 2> /dev/null \
| awk '/clock time is/{print $5}' \
| awk -F. '{print $1}')
(( res == 101 ))
}
##############################################################################
cleanup()
{
phc_ctl $DEV freq 0.0 &> /dev/null
phc_ctl $DEV set &> /dev/null
}
settime()
{
RET=0
settime_do
check_err $?
log_test "settime"
cleanup
}
adjtime()
{
RET=0
adjtime_do
check_err $?
log_test "adjtime"
cleanup
}
adjfreq()
{
RET=0
adjfreq_do
check_err $?
log_test "adjfreq"
cleanup
}
trap cleanup EXIT
tests_run
exit $EXIT_STATUS