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20fd3a0624
Ticket: CM-11043 Reviewed By: roopa Testing Done: used the config mentioned in bug This patch adds a delay before starting IPv6 dhclient to make sure the configured interface/link in up. Also, ifdown on a IPv6 interface, this patch makes sure that the link in up before dhcp release. Dhcp release is done using a default lease file. Signed-off-by: Nikhil <nikhil@cumulusnetworks.com>
104 lines
3.8 KiB
Python
104 lines
3.8 KiB
Python
#!/usr/bin/python
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#
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# Copyright 2014 Cumulus Networks, Inc. All rights reserved.
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# Author: Roopa Prabhu, roopa@cumulusnetworks.com
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#
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from ifupdown.utils import utils
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from utilsbase import *
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import os
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class dhclient(utilsBase):
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""" This class contains helper methods to interact with the dhclient
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utility """
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def _pid_exists(self, pidfilename):
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if os.path.exists(pidfilename):
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pid = self.read_file_oneline(pidfilename)
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if not os.path.exists('/proc/%s' %pid):
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return False
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else:
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return False
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return True
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def is_running(self, ifacename):
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return self._pid_exists('/run/dhclient.%s.pid' %ifacename)
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def is_running6(self, ifacename):
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return self._pid_exists('/run/dhclient6.%s.pid' %ifacename)
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def _run_dhclient_cmd(self, cmd, cmd_prefix=None):
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if not cmd_prefix:
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cmd_aslist = []
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else:
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cmd_aslist = cmd_prefix.split()
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if cmd_aslist:
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cmd_aslist.extend(cmd)
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else:
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cmd_aslist = cmd
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utils.exec_commandl(cmd_aslist, stdout=None, stderr=None)
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def stop(self, ifacename, cmd_prefix=None):
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if os.path.exists('/sbin/dhclient3'):
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cmd = ['/sbin/dhclient3', '-x', '-pf',
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'/run/dhclient.%s.pid' %ifacename, '-lf',
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'/var/lib/dhcp3/dhclient.%s.leases' %ifacename,
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'%s' %ifacename]
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else:
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cmd = ['/sbin/dhclient', '-x', '-pf',
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'/run/dhclient.%s.pid' %ifacename,
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'-lf', '/var/lib/dhcp/dhclient.%s.leases' %ifacename,
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'%s' %ifacename]
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self._run_dhclient_cmd(cmd, cmd_prefix)
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def start(self, ifacename, wait=True, cmd_prefix=None):
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if os.path.exists('/sbin/dhclient3'):
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cmd = ['/sbin/dhclient3', '-pf',
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'/run/dhclient.%s.pid' %ifacename,
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'-lf', '/var/lib/dhcp3/dhclient.%s.leases' %ifacename,
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'%s' %ifacename]
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else:
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cmd = ['/sbin/dhclient', '-pf',
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'/run/dhclient.%s.pid' %ifacename, '-lf',
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'/var/lib/dhcp/dhclient.%s.leases' %ifacename,
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'%s' %ifacename]
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if not wait:
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cmd.append('-nw')
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self._run_dhclient_cmd(cmd, cmd_prefix)
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def release(self, ifacename, cmd_prefix=None):
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if os.path.exists('/sbin/dhclient3'):
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cmd = ['/sbin/dhclient3', '-r', '-pf',
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'/run/dhclient.%s.pid' %ifacename, '-lf',
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'/var/lib/dhcp3/dhclient.%s.leases' %ifacename,
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'%s' %ifacename]
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else:
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cmd = ['/sbin/dhclient', '-r', '-pf',
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'/run/dhclient.%s.pid' %ifacename,
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'-lf', '/var/lib/dhcp/dhclient.%s.leases' %ifacename,
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'%s' %ifacename]
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self._run_dhclient_cmd(cmd, cmd_prefix)
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def start6(self, ifacename, wait=True, cmd_prefix=None):
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cmd = ['/sbin/dhclient', '-6', '-pf',
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'/run/dhclient6.%s.pid' %ifacename, '-lf',
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'/var/lib/dhcp/dhclient.%s.leases ' %ifacename,
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'%s' %ifacename]
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if not wait:
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cmd.append('-nw')
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self._run_dhclient_cmd(cmd, cmd_prefix)
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def stop6(self, ifacename, cmd_prefix=None):
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cmd = ['/sbin/dhclient', '-6', '-x', '-pf',
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'/run/dhclient.%s.pid' %ifacename, '-lf',
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'/var/lib/dhcp/dhclient.%s.leases ' %ifacename,
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'%s' %ifacename]
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self._run_dhclient_cmd(cmd, cmd_prefix)
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def release6(self, ifacename, cmd_prefix=None):
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cmd = ['/sbin/dhclient', '-6', '-r', '-pf',
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'/run/dhclient6.%s.pid' %ifacename,
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'%s' %ifacename]
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self._run_dhclient_cmd(cmd, cmd_prefix)
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