b50b361d9f
PTP-notification was treating clockClass values 7 and 135 as indicators of a locked status, which is incorrect as per ITU-T G.8275.1. This was resulting in ptp-notification delivering locked status to clients when it should instead be transitioning to holdover/freerun. Removed clockClass 7 and 135 from the list of valid locked clockClasses. PTP-notification is now able to properly transition states when these classes are observed. Test plan: PASS: Build and deploy image PASS: Verify correct state transitions when clockClass 6, 7, 135 are observed Partial-Bug: 1995014 Signed-off-by: Cole Walker <cole.walker@windriver.com> Change-Id: If68df991c3d6555f09e19a0d11f2c71e077c2587
108 lines
3.5 KiB
Python
108 lines
3.5 KiB
Python
#! /usr/bin/python3
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#
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# Copyright (c) 2021-2022 Wind River Systems, Inc.
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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#
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# This script provides the PTP synchronization status
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# for PTP NIC configured as subordinate (slave mode)
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# It relies on Linux ptp4l (PMC) module in order to work
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# Sync status provided as: 'Locked', 'Holdover', 'Freerun'
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#
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#
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import os
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import re
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import subprocess
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import logging
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from trackingfunctionsdk.common.helpers import constants
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from trackingfunctionsdk.common.helpers import log_helper
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LOG = logging.getLogger(__name__)
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log_helper.config_logger(LOG)
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# run subprocess and returns out, err, errcode
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def run_shell2(dir, ctx, args):
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cwd = os.getcwd()
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os.chdir(dir)
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process = subprocess.Popen(args, shell=True,
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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out, err = process.communicate()
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errcode = process.returncode
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os.chdir(cwd)
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return out, err, errcode
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def check_critical_resources(ptp4l_service_name, phc2sys_service_name):
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pmc = False
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ptp4l = False
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phc2sys = False
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ptp4lconf = False
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if os.path.isfile('/usr/sbin/pmc'):
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pmc = True
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if os.path.isfile('/var/run/ptp4l-%s.pid' % ptp4l_service_name):
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ptp4l = True
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if os.path.isfile('/var/run/phc2sys-%s.pid' % phc2sys_service_name):
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phc2sys = True
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if os.path.isfile(constants.PTP_CONFIG_PATH +
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('ptp4l-%s.conf' % ptp4l_service_name)):
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ptp4lconf = True
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return pmc, ptp4l, phc2sys, ptp4lconf
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def check_results(result, total_ptp_keywords, port_count):
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# sync state is in 'Locked' state and will be overwritten if
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# it is not the case
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sync_state = constants.LOCKED_PHC_STATE
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local_gm = False
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# check for a healthy result
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if len(result) != total_ptp_keywords:
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sync_state = constants.FREERUN_PHC_STATE
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LOG.warning('results are not complete, returning FREERUN')
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return sync_state
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# determine the current sync state
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if (result[constants.GM_PRESENT].lower() != constants.GM_IS_PRESENT
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and result[constants.GRANDMASTER_IDENTITY] != result[constants.CLOCK_IDENTITY]):
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sync_state = constants.FREERUN_PHC_STATE
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elif result[constants.GRANDMASTER_IDENTITY] == result[constants.CLOCK_IDENTITY]:
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local_gm = True
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LOG.debug("Local node is a GM")
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for port in range(1, port_count + 1):
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if result[constants.PORT.format(port)].lower() == constants.SLAVE_MODE:
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break
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elif local_gm and result[constants.PORT.format(port)].lower() == constants.MASTER_MODE:
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break
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else:
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sync_state = constants.FREERUN_PHC_STATE
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if (result[constants.TIME_TRACEABLE] != constants.TIME_IS_TRACEABLE1
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and result[constants.TIME_TRACEABLE].lower != constants.TIME_IS_TRACEABLE2):
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sync_state = constants.FREERUN_PHC_STATE
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if (result[constants.GM_CLOCK_CLASS] not in
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[constants.CLOCK_CLASS_VALUE6]):
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sync_state = constants.FREERUN_PHC_STATE
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return sync_state
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def parse_resource_address(resource_address):
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# The format of resource address is:
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# /{clusterName}/{siteName}(/optional/hierarchy/..)/{nodeName}/{resource}
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# Assume no optional hierarchy for now
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clusterName = resource_address.split('/')[1]
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nodeName = resource_address.split('/')[2]
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resource_path = '/' + re.split('[/]', resource_address, 3)[3]
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return clusterName, nodeName, resource_path
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def format_resource_address(node_name, resource):
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# Return a resource_address
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resource_address = '/./' + node_name + resource
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return resource_address
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