import os, sys, getopt, time, signal
import syslog
import traceback
-import time
import re
import random
from xml.dom.minidom import getDOMImplementation
vswitch_state_dir = "/var/lib/openvswitch/"
dbcache_file = vswitch_state_dir + "dbcache"
+#
+# Debugging and Logging.
+#
+
+def debug_mode():
+ return output_directory is not None
+
+def log(s):
+ if debug_mode():
+ print >>sys.stderr, s
+ else:
+ syslog.syslog(s)
+
+def log_pif_action(action, pif):
+ pifrec = db.get_pif_record(pif)
+ rec = {}
+ rec['uuid'] = pifrec['uuid']
+ rec['ip_configuration_mode'] = pifrec['ip_configuration_mode']
+ rec['action'] = action
+ rec['pif_netdev_name'] = pif_netdev_name(pif)
+ rec['message'] = "Bring %(action)s PIF %(uuid)s" % rec
+ log("%(message)s: %(pif_netdev_name)s configured as %(ip_configuration_mode)s" % rec)
+
+
+def run_command(command):
+ log("Running command: " + ' '.join(command))
+ rc = os.spawnl(os.P_WAIT, command[0], *command)
+ if rc != 0:
+ log("Command failed %d: " % rc + ' '.join(command))
+ return False
+ return True
+
+#
+# Exceptions.
+#
+
class Usage(Exception):
def __init__(self, msg):
Exception.__init__(self)
Exception.__init__(self)
self.msg = msg
+#
+# Configuration File Handling.
+#
+
class ConfigurationFile(object):
"""Write a file, tracking old and new versions.
__STATE = {"OPEN":"OPEN",
"NOT-APPLIED":"NOT-APPLIED", "APPLIED":"APPLIED",
"REVERTED":"REVERTED", "COMMITTED": "COMMITTED"}
-
+
def __init__(self, fname, path="/etc/sysconfig/network-scripts"):
self.__state = self.__STATE['OPEN']
self.__fname = fname
self.__children = []
-
+
if debug_mode():
dirname = output_directory
else:
dirname = path
-
+
self.__path = os.path.join(dirname, fname)
self.__oldpath = os.path.join(dirname, "." + fname + ".xapi-old")
self.__newpath = os.path.join(dirname, "." + fname + ".xapi-new")
self.__unlink = False
-
+
self.__f = open(self.__newpath, "w")
def attach_child(self, child):
return open(self.path()).readlines()
except:
return ""
-
+
def write(self, args):
if self.__state != self.__STATE['OPEN']:
raise Error("Attempt to write to file in state %s" % self.__state)
self.__unlink = True
self.__f.close()
self.__state = self.__STATE['NOT-APPLIED']
-
+
def close(self):
if self.__state != self.__STATE['OPEN']:
raise Error("Attempt to close file in state %s" % self.__state)
-
+
self.__f.close()
self.__state = self.__STATE['NOT-APPLIED']
if not self.__unlink:
os.link(self.__newpath, self.__path)
else:
- pass # implicit unlink of original file
+ pass # implicit unlink of original file
# Remove temporary file.
os.unlink(self.__newpath)
os.unlink(self.__oldpath)
# Leave .*.xapi-new as an aid to debugging.
-
+
self.__state = self.__STATE['REVERTED']
-
+
def commit(self):
if self.__state != self.__STATE['APPLIED']:
raise Error("Attempt to commit configuration from state %s" % self.__state)
child.commit()
log("Committing changes to %s configuration" % self.__fname)
-
+
if os.access(self.__oldpath, os.F_OK):
os.unlink(self.__oldpath)
if os.access(self.__newpath, os.F_OK):
self.__state = self.__STATE['COMMITTED']
-def debug_mode():
- return output_directory is not None
-
-def log(s):
- if debug_mode():
- print >>sys.stderr, s
- else:
- syslog.syslog(s)
-
-def check_allowed(pif):
- pifrec = db.get_pif_record(pif)
- try:
- f = open("/proc/ardence")
- macline = filter(lambda x: x.startswith("HWaddr:"), f.readlines())
- f.close()
- if len(macline) == 1:
- p = re.compile(".*\s%(MAC)s\s.*" % pifrec, re.IGNORECASE)
- if p.match(macline[0]):
- log("Skipping PVS device %(device)s (%(MAC)s)" % pifrec)
- return False
- except IOError:
- pass
- return True
-
-def interface_exists(i):
- return os.path.exists("/sys/class/net/" + i)
-
-def get_netdev_mac(device):
- try:
- return read_first_line_of_file("/sys/class/net/%s/address" % device)
- except:
- # Probably no such device.
- return None
-
-def get_netdev_tx_queue_len(device):
- try:
- return int(read_first_line_of_file("/sys/class/net/%s/tx_queue_len"
- % device))
- except:
- # Probably no such device.
- return None
-
-def get_netdev_by_mac(mac):
- for device in os.listdir("/sys/class/net"):
- dev_mac = get_netdev_mac(device)
- if (dev_mac and mac.lower() == dev_mac.lower() and
- get_netdev_tx_queue_len(device)):
- return device
- return None
-
#
# Helper functions for encoding/decoding database attributes to/from XML.
#
+
def str_to_xml(xml, parent, tag, val):
e = xml.createElement(tag)
parent.appendChild(e)
return rc
return getText(n.childNodes).strip()
-
def bool_to_xml(xml, parent, tag, val):
if val:
str_to_xml(xml, parent, tag, "True")
elif s == "False":
return False
else:
- raise Error("Unknown boolean value %s" % s);
+ raise Error("Unknown boolean value %s" % s)
def strlist_to_xml(xml, parent, ltag, itag, val):
e = xml.createElement(ltag)
ETHTOOL_OTHERCONFIG_ATTRS = ['ethtool-%s' % x for x in 'autoneg', 'speed', 'duplex', 'rx', 'tx', 'sg', 'tso', 'ufo', 'gso' ]
+PIF_OTHERCONFIG_ATTRS = [ 'domain', 'peerdns', 'defaultroute', 'mtu', 'static-routes' ] + \
+ [ 'bond-%s' % x for x in 'mode', 'miimon', 'downdelay', 'updelay', 'use_carrier' ] + \
+ ETHTOOL_OTHERCONFIG_ATTRS
+
PIF_ATTRS = { 'uuid': (str_to_xml,str_from_xml),
'management': (bool_to_xml,bool_from_xml),
'network': (str_to_xml,str_from_xml),
'MAC': (str_to_xml,str_from_xml),
'other_config': (lambda x, p, t, v: otherconfig_to_xml(x, p, v, PIF_OTHERCONFIG_ATTRS),
lambda n: otherconfig_from_xml(n, PIF_OTHERCONFIG_ATTRS)),
-
+
# Special case: We write the current value
# PIF.currently-attached to the cache but since it will
# not be valid when we come to use the cache later
'currently_attached': (bool_to_xml, lambda n: False),
}
-PIF_OTHERCONFIG_ATTRS = [ 'domain', 'peerdns', 'defaultroute', 'mtu', 'static-routes' ] + \
- [ 'bond-%s' % x for x in 'mode', 'miimon', 'downdelay', 'updelay', 'use_carrier' ] + \
- ETHTOOL_OTHERCONFIG_ATTRS
-
VLAN_ATTRS = { 'uuid': (str_to_xml,str_from_xml),
'tagged_PIF': (str_to_xml,str_from_xml),
'untagged_PIF': (str_to_xml,str_from_xml),
}
-
+
BOND_ATTRS = { 'uuid': (str_to_xml,str_from_xml),
'master': (str_to_xml,str_from_xml),
'slaves': (lambda x, p, t, v: strlist_to_xml(x, p, 'slaves', 'slave', v),
lambda n: strlist_from_xml(n, 'slaves', 'slave')),
}
+NETWORK_OTHERCONFIG_ATTRS = [ 'mtu', 'static-routes' ] + ETHTOOL_OTHERCONFIG_ATTRS
+
NETWORK_ATTRS = { 'uuid': (str_to_xml,str_from_xml),
'bridge': (str_to_xml,str_from_xml),
'PIFs': (lambda x, p, t, v: strlist_to_xml(x, p, 'PIFs', 'PIF', v),
lambda n: otherconfig_from_xml(n, NETWORK_OTHERCONFIG_ATTRS)),
}
-NETWORK_OTHERCONFIG_ATTRS = [ 'mtu', 'static-routes' ] + ETHTOOL_OTHERCONFIG_ATTRS
-
class DatabaseCache(object):
def __read_xensource_inventory(self):
filename = "/etc/xensource-inventory"
_,h = attrs[n.nodeName]
rec[n.nodeName] = h(n)
return (ref,rec)
-
+
def __init__(self, session_ref=None, cache_file=None):
if session_ref and cache_file:
raise Error("can't specify session reference and cache file")
session._session = session_ref
try:
-
+
inventory = self.__read_xensource_inventory()
assert(inventory.has_key('INSTALLATION_UUID'))
log("host uuid is %s" % inventory['INSTALLATION_UUID'])
-
+
host = session.xenapi.host.get_by_uuid(inventory['INSTALLATION_UUID'])
-
+
self.__get_pif_records_from_xapi(session, host)
self.__get_vlan_records_from_xapi(session)
assert(len(xml.childNodes) == 1)
toplevel = xml.childNodes[0]
-
+
assert(toplevel.nodeName == "xenserver-network-configuration")
-
+
for n in toplevel.childNodes:
if n.nodeName == "#text":
pass
for (ref,rec) in self.__networks.items():
self.__to_xml(xml, xml.documentElement, NETWORK_XML_TAG, ref, rec,
NETWORK_ATTRS)
-
+
f = open(cache_file, 'w')
f.write(xml.toprettyxml())
f.close()
filter(lambda (ref,rec): rec['bridge'] == bridge,
self.__networks.items()))
if len(networks) == 0:
- raise Error("No matching network \"%s\"")
+ raise Error("No matching network \"%s\"" % bridge)
answer = None
for network in networks:
return self.__pifs
def pif_exists(self, pif):
return self.__pifs.has_key(pif)
-
+
def get_management_pif(self):
""" Returns the management pif on host
"""
all = self.get_all_pifs()
- for pif in all:
+ for pif in all:
pifrec = self.get_pif_record(pif)
if pifrec['management']: return pif
return None
return self.__bonds[bond]
else:
return None
-
+
def get_vlan_record(self, vlan):
if self.__vlans.has_key(vlan):
return self.__vlans[vlan]
else:
return None
-
-def bridge_name(pif):
- """Return the bridge name associated with pif, or None if network is bridgeless"""
- pifrec = db.get_pif_record(pif)
- nwrec = db.get_network_record(pifrec['network'])
-
- if nwrec['bridge']:
- # TODO: sanity check that nwrec['bridgeless'] != 'true'
- return nwrec['bridge']
- else:
- # TODO: sanity check that nwrec['bridgeless'] == 'true'
- return None
-
-def interface_name(pif):
- """Construct an interface name from the given PIF record."""
-
- pifrec = db.get_pif_record(pif)
- if pifrec['VLAN'] == '-1':
- return pifrec['device']
- else:
- return "%(device)s.%(VLAN)s" % pifrec
+#
+# Boot from Network filesystem or device.
+#
-def datapath_name(pif):
- """Return the OpenFlow datapath name associated with pif.
-For a non-VLAN PIF, the datapath name is the bridge name.
-For a VLAN PIF, the datapath name is the bridge name for the PIF's VLAN slave.
-(xapi will create a datapath named with the bridge name even though we won't
-use it.)
-"""
+def check_allowed(pif):
+ """Determine whether interface-reconfigure should be manipulating this PIF.
+ Used to prevent system PIFs (such as network root disk) from being interfered with.
+ """
pifrec = db.get_pif_record(pif)
+ try:
+ f = open("/proc/ardence")
+ macline = filter(lambda x: x.startswith("HWaddr:"), f.readlines())
+ f.close()
+ if len(macline) == 1:
+ p = re.compile(".*\s%(MAC)s\s.*" % pifrec, re.IGNORECASE)
+ if p.match(macline[0]):
+ log("Skipping PVS device %(device)s (%(MAC)s)" % pifrec)
+ return False
+ except IOError:
+ pass
+ return True
- if pifrec['VLAN'] == '-1':
- return bridge_name(pif)
- else:
- return bridge_name(get_vlan_slave_of_pif(pif))
+#
+# Bare Network Devices -- network devices without IP configuration
+#
-def ipdev_name(pif):
- """Return the the name of the network device that carries the
-IP configuration (if any) associated with pif.
-The ipdev name is the same as the bridge name.
-"""
+def netdev_exists(netdev):
+ return os.path.exists("/sys/class/net/" + netdev)
- pifrec = db.get_pif_record(pif)
- return bridge_name(pif)
+def pif_netdev_name(pif):
+ """Get the netdev name for a PIF."""
-def get_physdev_pifs(pif):
- """Return the PIFs for the physical network device(s) associated with pif.
-For a VLAN PIF, this is the VLAN slave's physical device PIF.
-For a bond master PIF, these are the bond slave PIFs.
-For a non-VLAN, non-bond master PIF, the PIF is its own physical device PIF.
-"""
pifrec = db.get_pif_record(pif)
- if pifrec['VLAN'] != '-1':
- return get_physdev_pifs(get_vlan_slave_of_pif(pif))
- elif len(pifrec['bond_master_of']) != 0:
- return get_bond_slaves_of_pif(pif)
+ if pif_is_vlan(pif):
+ return "%(device)s.%(VLAN)s" % pifrec
else:
- return [pif]
-
-def get_physdev_names(pif):
- """Return the name(s) of the physical network device(s) associated with pif.
-For a VLAN PIF, the physical devices are the VLAN slave's physical devices.
-For a bond master PIF, the physical devices are the bond slaves.
-For a non-VLAN, non-bond master PIF, the physical device is the PIF itself.
-"""
-
- return [db.get_pif_record(phys)['device'] for phys in get_physdev_pifs(pif)]
-
-def log_pif_action(action, pif):
- pifrec = db.get_pif_record(pif)
- rec = {}
- rec['uuid'] = pifrec['uuid']
- rec['ip_configuration_mode'] = pifrec['ip_configuration_mode']
- rec['action'] = action
- rec['interface-name'] = interface_name(pif)
- rec['message'] = "Bring %(action)s PIF %(uuid)s" % rec
- log("%(message)s: %(interface-name)s configured as %(ip_configuration_mode)s" % rec)
-
-def get_bond_masters_of_pif(pif):
- """Returns a list of PIFs which are bond masters of this PIF"""
-
- pifrec = db.get_pif_record(pif)
-
- bso = pifrec['bond_slave_of']
-
- # bond-slave-of is currently a single reference but in principle a
- # PIF could be a member of several bonds which are not
- # concurrently attached. Be robust to this possibility.
- if not bso or bso == "OpaqueRef:NULL":
- bso = []
- elif not type(bso) == list:
- bso = [bso]
-
- bondrecs = [db.get_bond_record(bond) for bond in bso]
- bondrecs = [rec for rec in bondrecs if rec]
-
- return [bond['master'] for bond in bondrecs]
-
-def get_bond_slaves_of_pif(pif):
- """Returns a list of PIFs which make up the given bonded pif."""
-
- pifrec = db.get_pif_record(pif)
+ return pifrec['device']
- bmo = pifrec['bond_master_of']
- if len(bmo) > 1:
- raise Error("Bond-master-of contains too many elements")
-
- if len(bmo) == 0:
- return []
-
- bondrec = db.get_bond_record(bmo[0])
- if not bondrec:
- raise Error("No bond record for bond master PIF")
+def netdev_down(netdev):
+ """Bring down a bare network device"""
+ if debug_mode():
+ return
+ if not netdev_exists(netdev):
+ log("netdev: down: device %s does not exist, ignoring" % netdev)
+ return
+ run_command(["/sbin/ifconfig", netdev, 'down'])
- return bondrec['slaves']
+def netdev_up(netdev, mtu=None):
+ """Bring up a bare network device"""
+ if debug_mode():
+ return
+ if not netdev_exists(netdev):
+ raise Error("netdev: up: device %s does not exist" % netdev)
-def get_vlan_slave_of_pif(pif):
- """Find the PIF which is the VLAN slave of pif.
+ if mtu:
+ mtu = ["mtu", mtu]
+ else:
+ mtu = []
+
+ run_command(["/sbin/ifconfig", netdev, 'up'] + mtu)
-Returns the 'physical' PIF underneath the a VLAN PIF @pif."""
+def netdev_remap_name(pif, already_renamed=[]):
+ """Check whether 'pif' exists and has the correct MAC.
+ If not, try to find a device with the correct MAC and rename it.
+ 'already_renamed' is used to avoid infinite recursion.
+ """
- pifrec = db.get_pif_record(pif)
-
- vlan = pifrec['VLAN_master_of']
- if not vlan or vlan == "OpaqueRef:NULL":
- raise Error("PIF is not a VLAN master")
-
- vlanrec = db.get_vlan_record(vlan)
- if not vlanrec:
- raise Error("No VLAN record found for PIF")
+ def read1(name):
+ file = None
+ try:
+ file = open(name, 'r')
+ return file.readline().rstrip('\n')
+ finally:
+ if file != None:
+ file.close()
- return vlanrec['tagged_PIF']
+ def get_netdev_mac(device):
+ try:
+ return read1("/sys/class/net/%s/address" % device)
+ except:
+ # Probably no such device.
+ return None
-def get_vlan_masters_of_pif(pif):
- """Returns a list of PIFs which are VLANs on top of the given pif."""
-
- pifrec = db.get_pif_record(pif)
- vlans = [db.get_vlan_record(v) for v in pifrec['VLAN_slave_of']]
- return [v['untagged_PIF'] for v in vlans if v and db.pif_exists(v['untagged_PIF'])]
+ def get_netdev_tx_queue_len(device):
+ try:
+ return int(read1("/sys/class/net/%s/tx_queue_len" % device))
+ except:
+ # Probably no such device.
+ return None
-def interface_deconfigure_commands(interface):
- # The use of [!0-9] keeps an interface of 'eth0' from matching
- # VLANs attached to eth0 (such as 'eth0.123'), which are distinct
- # interfaces.
- return ['--del-match=bridge.*.port=%s' % interface,
- '--del-match=bonding.%s.[!0-9]*' % interface,
- '--del-match=bonding.*.slave=%s' % interface,
- '--del-match=vlan.%s.[!0-9]*' % interface,
- '--del-match=port.%s.[!0-9]*' % interface,
- '--del-match=iface.%s.[!0-9]*' % interface]
+ def get_netdev_by_mac(mac):
+ for device in os.listdir("/sys/class/net"):
+ dev_mac = get_netdev_mac(device)
+ if (dev_mac and mac.lower() == dev_mac.lower() and
+ get_netdev_tx_queue_len(device)):
+ return device
+ return None
-def run_command(command):
- log("Running command: " + ' '.join(command))
- if os.spawnl(os.P_WAIT, command[0], *command) != 0:
- log("Command failed: " + ' '.join(command))
- return False
- return True
+ def rename_netdev(old_name, new_name):
+ log("Changing the name of %s to %s" % (old_name, new_name))
+ run_command(['/sbin/ifconfig', old_name, 'down'])
+ if not run_command(['/sbin/ip', 'link', 'set', old_name, 'name', new_name]):
+ raise Error("Could not rename %s to %s" % (old_name, new_name))
-def rename_netdev(old_name, new_name):
- log("Changing the name of %s to %s" % (old_name, new_name))
- run_command(['/sbin/ifconfig', old_name, 'down'])
- if not run_command(['/sbin/ip', 'link', 'set', old_name,
- 'name', new_name]):
- raise Error("Could not rename %s to %s" % (old_name, new_name))
-
-# Check whether 'pif' exists and has the correct MAC.
-# If not, try to find a device with the correct MAC and rename it.
-# 'already_renamed' is used to avoid infinite recursion.
-def remap_pif(pif, already_renamed=[]):
pifrec = db.get_pif_record(pif)
device = pifrec['device']
mac = pifrec['MAC']
# Is there a network device named 'device' at all?
- device_exists = interface_exists(device)
+ device_exists = netdev_exists(device)
if device_exists:
# Yes. Does it have MAC 'mac'?
found_mac = get_netdev_mac(device)
# Rename 'cur_device' to 'device'.
rename_netdev(cur_device, device)
-def read_first_line_of_file(name):
- file = None
- try:
- file = open(name, 'r')
- return file.readline().rstrip('\n')
- finally:
- if file != None:
- file.close()
-
-def down_netdev(interface, deconfigure=True):
- if not interface_exists(interface):
- log("down_netdev: interface %s does not exist, ignoring" % interface)
- return
- if deconfigure:
- # Kill dhclient.
- pidfile_name = '/var/run/dhclient-%s.pid' % interface
- try:
- os.kill(int(read_first_line_of_file(pidfile_name)), signal.SIGTERM)
- except:
- pass
+#
+# IP Network Devices -- network devices with IP configuration
+#
- # Remove dhclient pidfile.
- try:
- os.remove(pidfile_name)
- except:
- pass
-
- run_command(["/sbin/ifconfig", interface, '0.0.0.0'])
+def pif_ipdev_name(pif):
+ """Return the ipdev name associated with pif"""
+ pifrec = db.get_pif_record(pif)
+ nwrec = db.get_network_record(pifrec['network'])
+
+ if nwrec['bridge']:
+ # TODO: sanity check that nwrec['bridgeless'] != 'true'
+ return nwrec['bridge']
+ else:
+ # TODO: sanity check that nwrec['bridgeless'] == 'true'
+ return pif_netdev_name(pif)
- run_command(["/sbin/ifconfig", interface, 'down'])
+def ifdown(netdev):
+ """Bring down a network interface"""
+ if debug_mode():
+ return
+ if not netdev_exists(netdev):
+ log("ifdown: device %s does not exist, ignoring" % netdev)
+ return
+ if not os.path.exists("/etc/sysconfig/network-scripts/ifcfg-%s" % netdev):
+ log("ifdown: device %s exists but ifcfg %s does not" % (netdev,netdev))
+ netdev_down(netdev)
+ run_command(["/sbin/ifdown", netdev])
-def up_netdev(interface):
- run_command(["/sbin/ifconfig", interface, 'up'])
+def ifup(netdev):
+ """Bring up a network interface"""
+ if debug_mode():
+ return
+ if not netdev_exists(netdev):
+ raise Error("ifup: device %s does not exist, ignoring" % netdev)
+ if not os.path.exists("/etc/sysconfig/network-scripts/ifcfg-%s" % netdev):
+ raise Error("ifup: device %s exists but ifcfg-%s does not" % (netdev,netdev))
+ run_command(["/sbin/ifup", netdev])
+
+#
+# Bridges
+#
-def find_distinguished_pifs(pif):
- """Returns the PIFs on host that own DNS and the default route.
-The peerdns pif will be the one with pif::other-config:peerdns=true, or the mgmt pif if none have this set.
-The gateway pif will be the one with pif::other-config:defaultroute=true, or the mgmt pif if none have this set.
+def pif_bridge_name(pif):
+ """Return the bridge name of a pif.
-Note: we prune out the bond master pif (if it exists).
-This is because when we are called to bring up an interface with a bond master, it is implicit that
-we should bring down that master."""
+ PIF must not be a VLAN and must be a bridged PIF."""
pifrec = db.get_pif_record(pif)
- pifs = [ __pif for __pif in db.get_all_pifs() if
- (not __pif in get_bond_masters_of_pif(pif)) ]
+ if pif_is_vlan(pif):
+ raise Error("PIF %(uuid)s cannot be a bridge, VLAN is %(VLAN)s" % pifrec)
+
+ nwrec = db.get_network_record(pifrec['network'])
- peerdns_pif = None
- defaultroute_pif = None
-
- # loop through all the pifs on this host looking for one with
- # other-config:peerdns = true, and one with
- # other-config:default-route=true
- for __pif in pifs:
- __pifrec = db.get_pif_record(__pif)
- __oc = __pifrec['other_config']
- if __oc.has_key('peerdns') and __oc['peerdns'] == 'true':
- if peerdns_pif == None:
- peerdns_pif = __pif
- else:
- log('Warning: multiple pifs with "peerdns=true" - choosing %s and ignoring %s' % \
- (db.get_pif_record(peerdns_pif)['device'], __pifrec['device']))
- if __oc.has_key('defaultroute') and __oc['defaultroute'] == 'true':
- if defaultroute_pif == None:
- defaultroute_pif = __pif
- else:
- log('Warning: multiple pifs with "defaultroute=true" - choosing %s and ignoring %s' % \
- (db.get_pif_record(defaultroute_pif)['device'], __pifrec['device']))
-
- # If no pif is explicitly specified then use the mgmt pif for peerdns/defaultroute
- if peerdns_pif == None:
- peerdns_pif = management_pif
- if defaultroute_pif == None:
- defaultroute_pif = management_pif
+ if nwrec['bridge']:
+ return nwrec['bridge']
+ else:
+ raise Error("PIF %(uuid)s does not have a bridge name" % pifrec)
+
+#
+# PIF miscellanea
+#
- return peerdns_pif, defaultroute_pif
+def pif_currently_in_use(pif):
+ """Determine if a PIF is currently in use.
-def run_ethtool(device, oc):
- # Run "ethtool -s" if there are any settings.
+ A PIF is determined to be currently in use if
+ - PIF.currently-attached is true
+ - Any bond master is currently attached
+ - Any VLAN master is currently attached
+ """
+ rec = db.get_pif_record(pif)
+ if rec['currently_attached']:
+ log("configure_datapath: %s is currently attached" % (pif_netdev_name(pif)))
+ return True
+ for b in pif_get_bond_masters(pif):
+ if pif_currently_in_use(b):
+ log("configure_datapath: %s is in use by BOND master %s" % (pif_netdev_name(pif),pif_netdev_name(b)))
+ return True
+ for v in pif_get_vlan_masters(pif):
+ if pif_currently_in_use(v):
+ log("configure_datapath: %s is in use by VLAN master %s" % (pif_netdev_name(pif),pif_netdev_name(v)))
+ return True
+ return False
+
+#
+#
+#
+
+def ethtool_settings(oc):
settings = []
if oc.has_key('ethtool-speed'):
val = oc['ethtool-speed']
settings += ['autoneg', 'off']
else:
log("Invalid value for ethtool-autoneg = %s. Must be on|true|off|false." % val)
- if settings:
- run_command(['/sbin/ethtool', '-s', device] + settings)
-
- # Run "ethtool -K" if there are any offload settings.
offload = []
for opt in ("rx", "tx", "sg", "tso", "ufo", "gso"):
if oc.has_key("ethtool-" + opt):
offload += [opt, 'off']
else:
log("Invalid value for ethtool-%s = %s. Must be on|true|off|false." % (opt, val))
- if offload:
- run_command(['/sbin/ethtool', '-K', device] + offload)
+ return settings,offload
def mtu_setting(oc):
if oc.has_key('mtu'):
try:
int(oc['mtu']) # Check that the value is an integer
- return ['mtu', oc['mtu']]
+ return oc['mtu']
except ValueError, x:
- log("Invalid value for mtu = %s" % mtu)
- return []
+ log("Invalid value for mtu = %s" % oc['mtu'])
+ return None
+
+#
+# Bonded PIFs
+#
+def pif_get_bond_masters(pif):
+ """Returns a list of PIFs which are bond masters of this PIF"""
+
+ pifrec = db.get_pif_record(pif)
+
+ bso = pifrec['bond_slave_of']
+
+ # bond-slave-of is currently a single reference but in principle a
+ # PIF could be a member of several bonds which are not
+ # concurrently attached. Be robust to this possibility.
+ if not bso or bso == "OpaqueRef:NULL":
+ bso = []
+ elif not type(bso) == list:
+ bso = [bso]
+
+ bondrecs = [db.get_bond_record(bond) for bond in bso]
+ bondrecs = [rec for rec in bondrecs if rec]
+
+ return [bond['master'] for bond in bondrecs]
+
+def pif_get_bond_slaves(pif):
+ """Returns a list of PIFs which make up the given bonded pif."""
+
+ pifrec = db.get_pif_record(pif)
+
+ bmo = pifrec['bond_master_of']
+ if len(bmo) > 1:
+ raise Error("Bond-master-of contains too many elements")
+
+ if len(bmo) == 0:
+ return []
+
+ bondrec = db.get_bond_record(bmo[0])
+ if not bondrec:
+ raise Error("No bond record for bond master PIF")
+
+ return bondrec['slaves']
+
+#
+# VLAN PIFs
+#
+
+def pif_is_vlan(pif):
+ return db.get_pif_record(pif)['VLAN'] != '-1'
+
+def pif_get_vlan_slave(pif):
+ """Find the PIF which is the VLAN slave of pif.
+
+Returns the 'physical' PIF underneath the a VLAN PIF @pif."""
+
+ pifrec = db.get_pif_record(pif)
+
+ vlan = pifrec['VLAN_master_of']
+ if not vlan or vlan == "OpaqueRef:NULL":
+ raise Error("PIF is not a VLAN master")
+
+ vlanrec = db.get_vlan_record(vlan)
+ if not vlanrec:
+ raise Error("No VLAN record found for PIF")
+
+ return vlanrec['tagged_PIF']
+
+def pif_get_vlan_masters(pif):
+ """Returns a list of PIFs which are VLANs on top of the given pif."""
-def configure_local_port(pif):
pifrec = db.get_pif_record(pif)
- datapath = datapath_name(pif)
- ipdev = ipdev_name(pif)
+ vlans = [db.get_vlan_record(v) for v in pifrec['VLAN_slave_of']]
+ return [v['untagged_PIF'] for v in vlans if v and db.pif_exists(v['untagged_PIF'])]
+
+#
+# IP device configuration
+#
- nw = pifrec['network']
- nwrec = db.get_network_record(nw)
+def ipdev_configure_static_routes(interface, oc, f):
+ """Open a route-<interface> file for static routes.
+
+ Opens the static routes configuration file for interface and writes one
+ line for each route specified in the network's other config "static-routes" value.
+ E.g. if
+ interface ( RO): xenbr1
+ other-config (MRW): static-routes: 172.16.0.0/15/192.168.0.3,172.18.0.0/16/192.168.0.4;...
+
+ Then route-xenbr1 should be
+ 172.16.0.0/15 via 192.168.0.3 dev xenbr1
+ 172.18.0.0/16 via 192.168.0.4 dev xenbr1
+ """
+ fname = "route-%s" % interface
+ if oc.has_key('static-routes'):
+ # The key is present - extract comma seperates entries
+ lines = oc['static-routes'].split(',')
+ else:
+ # The key is not present, i.e. there are no static routes
+ lines = []
+
+ child = ConfigurationFile(fname)
+ child.write("# DO NOT EDIT: This file (%s) was autogenerated by %s\n" % \
+ (os.path.basename(child.path()), os.path.basename(sys.argv[0])))
+
+ try:
+ for l in lines:
+ network, masklen, gateway = l.split('/')
+ child.write("%s/%s via %s dev %s\n" % (network, masklen, gateway, interface))
+
+ f.attach_child(child)
+ child.close()
+
+ except ValueError, e:
+ log("Error in other-config['static-routes'] format for network %s: %s" % (interface, e))
- pif_oc = pifrec['other_config']
- nw_oc = nwrec['other_config']
+def ipdev_open_ifcfg(pif):
+ ipdev = pif_ipdev_name(pif)
- # IP (except DHCP) and MTU.
- ifconfig_argv = ['/sbin/ifconfig', ipdev, 'up']
- gateway = ''
+ log("Writing network configuration for %s" % ipdev)
+
+ f = ConfigurationFile("ifcfg-%s" % ipdev)
+
+ f.write("# DO NOT EDIT: This file (%s) was autogenerated by %s\n" % \
+ (os.path.basename(f.path()), os.path.basename(sys.argv[0])))
+ f.write("XEMANAGED=yes\n")
+ f.write("DEVICE=%s\n" % ipdev)
+ f.write("ONBOOT=no\n")
+
+ return f
+
+def ipdev_configure_network(pif):
+ """Write the configuration file for a network.
+
+ Writes configuration derived from the network object into the relevant
+ ifcfg file. The configuration file is passed in, but if the network is
+ bridgeless it will be ifcfg-<interface>, otherwise it will be ifcfg-<bridge>.
+
+ This routine may also write ifcfg files of the networks corresponding to other PIFs
+ in order to maintain consistency.
+
+ params:
+ pif: Opaque_ref of pif
+ f : ConfigurationFile(/path/to/ifcfg) to which we append network configuration
+ """
+
+ pifrec = db.get_pif_record(pif)
+ nwrec = db.get_network_record(pifrec['network'])
+
+ ipdev = pif_ipdev_name(pif)
+
+ f = ipdev_open_ifcfg(pif)
+
+ mode = pifrec['ip_configuration_mode']
+ log("Configuring %s using %s configuration" % (ipdev, mode))
+
+ oc = None
+ if pifrec.has_key('other_config'):
+ oc = pifrec['other_config']
+
+ f.write("TYPE=Ethernet\n")
if pifrec['ip_configuration_mode'] == "DHCP":
- pass
+ f.write("BOOTPROTO=dhcp\n")
+ f.write("PERSISTENT_DHCLIENT=yes\n")
elif pifrec['ip_configuration_mode'] == "Static":
- ifconfig_argv += [pifrec['IP']]
- ifconfig_argv += ['netmask', pifrec['netmask']]
- gateway = pifrec['gateway']
+ f.write("BOOTPROTO=none\n")
+ f.write("NETMASK=%(netmask)s\n" % pifrec)
+ f.write("IPADDR=%(IP)s\n" % pifrec)
+ f.write("GATEWAY=%(gateway)s\n" % pifrec)
elif pifrec['ip_configuration_mode'] == "None":
- # Nothing to do.
- pass
+ f.write("BOOTPROTO=none\n")
else:
- raise Error("Unknown IP-configuration-mode %s" % pifrec['ip_configuration_mode'])
- ifconfig_argv += mtu_setting(nw_oc)
- run_command(ifconfig_argv)
-
- (peerdns_pif, defaultroute_pif) = find_distinguished_pifs(pif)
-
- # /etc/resolv.conf
- if peerdns_pif == pif:
- f = ConfigurationFile('resolv.conf', "/etc")
- if pif_oc.has_key('domain'):
- f.write("search %s\n" % pif_oc['domain'])
- for dns in pifrec['DNS'].split(","):
- f.write("nameserver %s\n" % dns)
- f.close()
- f.apply()
- f.commit()
+ raise Error("Unknown ip-configuration-mode %s" % pifrec['ip_configuration_mode'])
+
+ if nwrec.has_key('other_config'):
+ settings,offload = ethtool_settings(nwrec['other_config'])
+ if len(settings):
+ f.write("ETHTOOL_OPTS=\"%s\"\n" % str.join(" ", settings))
+ if len(offload):
+ f.write("ETHTOOL_OFFLOAD_OPTS=\"%s\"\n" % str.join(" ", offload))
+
+ mtu = mtu_setting(nwrec['other_config'])
+ if mtu:
+ f.write("MTU=%s\n" % mtu)
+
+ ipdev_configure_static_routes(ipdev, nwrec['other_config'], f)
+
+ if pifrec.has_key('DNS') and pifrec['DNS'] != "":
+ ServerList = pifrec['DNS'].split(",")
+ for i in range(len(ServerList)): f.write("DNS%d=%s\n" % (i+1, ServerList[i]))
+ if oc and oc.has_key('domain'):
+ f.write("DOMAIN='%s'\n" % oc['domain'].replace(',', ' '))
+
+ # We only allow one ifcfg-* to have PEERDNS=yes and there can be
+ # only one GATEWAYDEV in /etc/sysconfig/network.
+ #
+ # The peerdns pif will be the one with
+ # pif::other-config:peerdns=true, or the mgmt pif if none have
+ # this set.
+ #
+ # The gateway pif will be the one with
+ # pif::other-config:defaultroute=true, or the mgmt pif if none
+ # have this set.
+
+ # Work out which pif on this host should be the one with
+ # PEERDNS=yes and which should be the GATEWAYDEV
+ #
+ # Note: we prune out the bond master pif (if it exists). This is
+ # because when we are called to bring up an interface with a bond
+ # master, it is implicit that we should bring down that master.
+ pifs_on_host = [ __pif for __pif in db.get_all_pifs() if
+ not __pif in pif_get_bond_masters(pif) ]
+ other_pifs_on_host = [ __pif for __pif in pifs_on_host if __pif != pif ]
+
+ peerdns_pif = None
+ defaultroute_pif = None
+
+ # loop through all the pifs on this host looking for one with
+ # other-config:peerdns = true, and one with
+ # other-config:default-route=true
+ for __pif in pifs_on_host:
+ __pifrec = db.get_pif_record(__pif)
+ __oc = __pifrec['other_config']
+ if __oc.has_key('peerdns') and __oc['peerdns'] == 'true':
+ if peerdns_pif == None:
+ peerdns_pif = __pif
+ else:
+ log('Warning: multiple pifs with "peerdns=true" - choosing %s and ignoring %s' % \
+ (db.get_pif_record(peerdns_pif)['device'], __pifrec['device']))
+ if __oc.has_key('defaultroute') and __oc['defaultroute'] == 'true':
+ if defaultroute_pif == None:
+ defaultroute_pif = __pif
+ else:
+ log('Warning: multiple pifs with "defaultroute=true" - choosing %s and ignoring %s' % \
+ (db.get_pif_record(defaultroute_pif)['device'], __pifrec['device']))
+
+ # If no pif is explicitly specified then use the mgmt pif for
+ # peerdns/defaultroute.
+ if peerdns_pif == None:
+ peerdns_pif = management_pif
+ if defaultroute_pif == None:
+ defaultroute_pif = management_pif
+
+ # Update all the other network's ifcfg files and ensure
+ # consistency.
+ for __pif in other_pifs_on_host:
+ __f = ipdev_open_ifcfg(__pif)
+ peerdns_line_wanted = 'PEERDNS=%s\n' % ((__pif == peerdns_pif) and 'yes' or 'no')
+ lines = __f.readlines()
+
+ if not peerdns_line_wanted in lines:
+ # the PIF selected for DNS has changed and as a result this ifcfg file needs rewriting
+ for line in lines:
+ if not line.lstrip().startswith('PEERDNS'):
+ __f.write(line)
+ log("Setting %s in %s" % (peerdns_line_wanted.strip(), __f.path()))
+ __f.write(peerdns_line_wanted)
+ __f.close()
+ f.attach_child(__f)
- # Routing.
- if defaultroute_pif == pif and gateway != '':
- run_command(['/sbin/ip', 'route', 'replace', 'default',
- 'via', gateway, 'dev', ipdev])
- if nw_oc.has_key('static-routes'):
- for line in nw_oc['static-routes'].split(','):
- network, masklen, gateway = line.split('/')
- run_command(['/sbin/ip', 'route', 'add',
- '%s/%s' % (network, masklen), 'via', gateway,
- 'dev', ipdev])
-
- # Ethtool.
- run_ethtool(ipdev, nw_oc)
-
- # DHCP.
- if pifrec['ip_configuration_mode'] == "DHCP":
- print
- print "Determining IP information for %s..." % ipdev,
- argv = ['/sbin/dhclient', '-q',
- '-lf', '/var/lib/dhclient/dhclient-%s.leases' % ipdev,
- '-pf', '/var/run/dhclient-%s.pid' % ipdev,
- ipdev]
- if run_command(argv):
- print 'done.'
else:
- print 'failed.'
+ # There is no need to change this ifcfg file. So don't attach_child.
+ pass
-def configure_physdev(pif):
- pifrec = db.get_pif_record(pif)
- device = pifrec['device']
- oc = pifrec['other_config']
+ # ... and for this pif too
+ f.write('PEERDNS=%s\n' % ((pif == peerdns_pif) and 'yes' or 'no'))
- run_command(['/sbin/ifconfig', device, 'up'] + mtu_setting(oc))
- run_ethtool(device, oc)
+ # Update gatewaydev
+ fnetwork = ConfigurationFile("network", "/etc/sysconfig")
+ for line in fnetwork.readlines():
+ if line.lstrip().startswith('GATEWAY') :
+ continue
+ fnetwork.write(line)
+ if defaultroute_pif:
+ gatewaydev = pif_ipdev_name(defaultroute_pif)
+ if not gatewaydev:
+ gatewaydev = pif_netdev_name(defaultroute_pif)
+ fnetwork.write('GATEWAYDEV=%s\n' % gatewaydev)
+ fnetwork.close()
+ f.attach_child(fnetwork)
-def modify_config(commands):
- run_command(['/usr/bin/ovs-cfg-mod', '-vANY:console:emer',
- '-F', '/etc/ovs-vswitchd.conf']
- + commands + ['-c'])
- run_command(['/sbin/service', 'vswitch', 'reload'])
+ return f
+
+#
+# Datapath Configuration
+#
+
+def pif_datapath(pif):
+ """Return the OpenFlow datapath name associated with pif.
+For a non-VLAN PIF, the datapath name is the bridge name.
+For a VLAN PIF, the datapath name is the bridge name for the PIF's VLAN slave.
+"""
+ if pif_is_vlan(pif):
+ return pif_datapath(pif_get_vlan_slave(pif))
+
+ pifrec = db.get_pif_record(pif)
+ nwrec = db.get_network_record(pifrec['network'])
+ if not nwrec['bridge']:
+ raise Error("datapath PIF cannot be bridgeless")
+ else:
+ return pif
-def is_bond_pif(pif):
+def datapath_get_physical_pifs(pif):
+ """Return the PIFs for the physical network device(s) associated with a datapath PIF.
+For a bond master PIF, these are the bond slave PIFs.
+For a non-VLAN, non-bond master PIF, the PIF is its own physical device PIF.
+
+A VLAN PIF cannot be a datapath PIF.
+"""
pifrec = db.get_pif_record(pif)
- return len(pifrec['bond_master_of']) != 0
-def configure_bond(pif):
+ if pif_is_vlan(pif):
+ raise Error("get-physical-pifs should not get passed a VLAN")
+ elif len(pifrec['bond_master_of']) != 0:
+ return pif_get_bond_slaves(pif)
+ else:
+ return [pif]
+
+def datapath_deconfigure_physical(netdev):
+ # The use of [!0-9] keeps an interface of 'eth0' from matching
+ # VLANs attached to eth0 (such as 'eth0.123'), which are distinct
+ # interfaces.
+ return ['--del-match=bridge.*.port=%s' % netdev,
+ '--del-match=port.%s.[!0-9]*' % netdev,
+ '--del-match=bonding.*.slave=%s' % netdev,
+ '--del-match=iface.%s.[!0-9]*' % netdev]
+
+def datapath_configure_bond(pif,slaves):
pifrec = db.get_pif_record(pif)
- interface = interface_name(pif)
- ipdev = ipdev_name(pif)
- datapath = datapath_name(pif)
- physdev_names = get_physdev_names(pif)
+ interface = pif_netdev_name(pif)
argv = ['--del-match=bonding.%s.[!0-9]*' % interface]
- argv += ["--add=bonding.%s.slave=%s" % (interface, slave)
- for slave in physdev_names]
+ argv += ["--add=bonding.%s.slave=%s" % (interface, pif_netdev_name(slave))
+ for slave in slaves]
argv += ['--add=bonding.%s.fake-iface=true' % interface]
if pifrec['MAC'] != "":
argv += ['--add=port.%s.mac=%s' % (interface, pifrec['MAC'])]
# Bonding options.
- bond_options = {
+ bond_options = {
"mode": "balance-slb",
"miimon": "100",
"downdelay": "200",
argv += ["--add=bonding.%s.%s=%s" % (interface, name, val)]
return argv
-def action_up(pif):
- pifrec = db.get_pif_record(pif)
+def datapath_deconfigure_bond(netdev):
+ # The use of [!0-9] keeps an interface of 'eth0' from matching
+ # VLANs attached to eth0 (such as 'eth0.123'), which are distinct
+ # interfaces.
+ return ['--del-match=bonding.%s.[!0-9]*' % netdev,
+ '--del-match=port.%s.[!0-9]*' % netdev]
- bridge = bridge_name(pif)
- interface = interface_name(pif)
- ipdev = ipdev_name(pif)
- datapath = datapath_name(pif)
- physdev_pifs = get_physdev_pifs(pif)
- physdev_names = get_physdev_names(pif)
- vlan_slave = None
- if pifrec['VLAN'] != '-1':
- vlan_slave = get_vlan_slave_of_pif(pif)
- if vlan_slave and is_bond_pif(vlan_slave):
- bond_master = vlan_slave
- elif is_bond_pif(pif):
- bond_master = pif
- else:
- bond_master = None
- if bond_master:
- bond_slaves = get_bond_slaves_of_pif(bond_master)
- else:
- bond_slaves = []
- bond_masters = get_bond_masters_of_pif(pif)
+def datapath_deconfigure_ipdev(interface):
+ # The use of [!0-9] keeps an interface of 'eth0' from matching
+ # VLANs attached to eth0 (such as 'eth0.123'), which are distinct
+ # interfaces.
+ return ['--del-match=bridge.*.port=%s' % interface,
+ '--del-match=port.%s.[!0-9]*' % interface,
+ '--del-match=iface.%s.[!0-9]*' % interface,
+ '--del-match=vlan.%s.[!0-9]*' % interface]
- # Support "rpm -e vswitch" gracefully by keeping Centos configuration
- # files up-to-date, even though we don't use them or need them.
- f = configure_pif(pif)
- mode = pifrec['ip_configuration_mode']
- if bridge:
- log("Configuring %s using %s configuration" % (bridge, mode))
- br = open_network_ifcfg(pif)
- configure_network(pif, br)
- br.close()
- f.attach_child(br)
- else:
- log("Configuring %s using %s configuration" % (interface, mode))
- configure_network(pif, f)
- f.close()
- for master in bond_masters:
- master_bridge = bridge_name(master)
- removed = unconfigure_pif(master)
- f.attach_child(removed)
- if master_bridge:
- removed = open_network_ifcfg(master)
- log("Unlinking stale file %s" % removed.path())
- removed.unlink()
- f.attach_child(removed)
+def datapath_modify_config(commands):
+ if debug_mode():
+ log("modifying configuration:")
+ for c in commands:
+ log(" %s" % c)
- # /etc/xensource/scripts/vif needs to know where to add VIFs.
- if vlan_slave:
- if not os.path.exists(vswitch_state_dir):
- os.mkdir(vswitch_state_dir)
- br = ConfigurationFile("br-%s" % bridge, vswitch_state_dir)
- br.write("VLAN_SLAVE=%s\n" % datapath)
- br.write("VLAN_VID=%s\n" % pifrec['VLAN'])
- br.close()
- f.attach_child(br)
+ rc = run_command(['/usr/bin/ovs-cfg-mod', '-vANY:console:emer',
+ '-F', '/etc/ovs-vswitchd.conf']
+ + [c for c in commands if c[0] != '#'] + ['-c'])
+ if not rc:
+ raise Error("Failed to modify vswitch configuration")
+ run_command(['/sbin/service', 'vswitch', 'reload'])
+ return True
- # Update all configuration files (both ours and Centos's).
- f.apply()
- f.commit()
+#
+# Toplevel Datapath Configuration.
+#
- # Check the MAC address of each network device and remap if
- # necessary to make names match our expectations.
- for physdev_pif in physdev_pifs:
- remap_pif(physdev_pif)
-
- # "ifconfig down" the network device and delete its IP address, etc.
- down_netdev(ipdev)
- for physdev_name in physdev_names:
- down_netdev(physdev_name)
-
- # If we are bringing up a bond, remove IP addresses from the
- # slaves (because we are implicitly being asked to take them down).
- #
- # Conversely, if we are bringing up an interface that has bond
- # masters, remove IP addresses from the bond master (because we
- # are implicitly being asked to take it down).
- for bond_pif in bond_slaves + bond_masters:
- run_command(["/sbin/ifconfig", ipdev_name(bond_pif), '0.0.0.0'])
-
- # Remove all keys related to pif and any bond masters linked to PIF.
- del_ports = [ipdev] + physdev_names + bond_masters
- if vlan_slave and bond_master:
- del_ports += [interface_name(bond_master)]
-
- # What ports do we need to add to the datapath?
- #
- # We definitely need the ipdev, and ordinarily we want the
- # physical devices too, but for bonds we need the bond as bridge
- # port.
- add_ports = [ipdev, datapath]
- if not bond_master:
- add_ports += physdev_names
- else:
- add_ports += [interface_name(bond_master)]
+def configure_datapath(pif):
+ """Bring up the datapath configuration for PIF.
- # What ports do we need to delete?
- #
- # - All the ports that we add, to avoid duplication and to drop
- # them from another datapath in case they're misassigned.
- #
- # - The physical devices, since they will either be in add_ports
- # or added to the bonding device (see below).
- #
- # - The bond masters for pif. (Ordinarily pif shouldn't have any
- # bond masters. If it does then interface-reconfigure is
- # implicitly being asked to take them down.)
- del_ports = add_ports + physdev_names + bond_masters
+ Should be careful not to glitch existing users of the datapath, e.g. other VLANs etc.
+
+ Should take care of tearing down other PIFs which encompass common physical devices.
+
+ Returns a tuple containing
+ - A list containing the necessary cfgmod command line arguments
+ - A list of additional devices which should be brought up after
+ the configuration is applied.
+ """
- # What networks does this datapath carry?
+ cfgmod_argv = []
+ extra_up_ports = []
+
+ bridge = pif_bridge_name(pif)
+
+ physical_devices = datapath_get_physical_pifs(pif)
+
+ # Determine additional devices to deconfigure.
#
- # - The network corresponding to the datapath's PIF.
+ # Given all physical devices which are part of this PIF we need to
+ # consider:
+ # - any additional bond which a physical device is part of.
+ # - any additional physical devices which are part of an additional bond.
#
- # - The networks corresponding to any VLANs attached to the
- # datapath's PIF.
- network_uuids = []
- for nwpif in db.get_pifs_by_device(pifrec['device']):
- net = db.get_pif_record(nwpif)['network']
- network_uuids += [db.get_network_record(net)['uuid']]
-
- # Bring up bond slaves early, because ovs-vswitchd initially
+ # Any of these which are not currently in use should be brought
+ # down and deconfigured.
+ extra_down_bonds = []
+ extra_down_ports = []
+ for p in physical_devices:
+ for bond in pif_get_bond_masters(p):
+ if bond == pif:
+ log("configure_datapath: leaving bond %s up" % pif_netdev_name(bond))
+ continue
+ if bond in extra_down_bonds:
+ continue
+ if db.get_pif_record(bond)['currently_attached']:
+ log("configure_datapath: implicitly tearing down currently-attached bond %s" % pif_netdev_name(bond))
+
+ extra_down_bonds += [bond]
+
+ for s in pif_get_bond_slaves(bond):
+ if s in physical_devices:
+ continue
+ if s in extra_down_ports:
+ continue
+ if pif_currently_in_use(s):
+ continue
+ extra_down_ports += [s]
+
+ log("configure_datapath: bridge - %s" % bridge)
+ log("configure_datapath: physical - %s" % [pif_netdev_name(p) for p in physical_devices])
+ log("configure_datapath: extra ports - %s" % [pif_netdev_name(p) for p in extra_down_ports])
+ log("configure_datapath: extra bonds - %s" % [pif_netdev_name(p) for p in extra_down_bonds])
+
+ # Need to fully deconfigure any bridge which any of the:
+ # - physical devices
+ # - bond devices
+ # - sibling devices
+ # refers to
+ for brpif in physical_devices + extra_down_ports + extra_down_bonds:
+ if brpif == pif:
+ continue
+ b = pif_bridge_name(brpif)
+ ifdown(b)
+ cfgmod_argv += ['# remove bridge %s' % b]
+ cfgmod_argv += ['--del-match=bridge.%s.*' % b]
+
+ for n in extra_down_ports:
+ dev = pif_netdev_name(n)
+ cfgmod_argv += ['# deconfigure sibling physical device %s' % dev]
+ cfgmod_argv += datapath_deconfigure_physical(dev)
+ netdev_down(dev)
+
+ for n in extra_down_bonds:
+ dev = pif_netdev_name(n)
+ cfgmod_argv += ['# deconfigure bond device %s' % dev]
+ cfgmod_argv += datapath_deconfigure_bond(dev)
+ netdev_down(dev)
+
+ for p in physical_devices:
+ dev = pif_netdev_name(p)
+ cfgmod_argv += ['# deconfigure physical port %s' % dev]
+ cfgmod_argv += datapath_deconfigure_physical(dev)
+
+ # Check the MAC address of each network device and remap if
+ # necessary to make names match our expectations.
+ for p in physical_devices:
+ netdev_remap_name(p)
+
+ # Bring up physical devices early, because ovs-vswitchd initially
# enables or disables bond slaves based on whether carrier is
# detected when they are added, and a network device that is down
# always reports "no carrier".
- bond_slave_physdev_pifs = []
- for slave in bond_slaves:
- bond_slave_physdev_pifs += get_physdev_pifs(slave)
- for slave_physdev_pif in set(bond_slave_physdev_pifs):
- configure_physdev(slave_physdev_pif)
-
- # Now modify the ovs-vswitchd config file.
- argv = []
- for port in set(del_ports):
- argv += interface_deconfigure_commands(port)
- for port in set(add_ports):
- argv += ['--add=bridge.%s.port=%s' % (datapath, port)]
- if vlan_slave:
- argv += ['--add=vlan.%s.tag=%s' % (ipdev, pifrec['VLAN'])]
- argv += ['--add=iface.%s.internal=true' % (ipdev)]
-
- # xapi creates a bridge by the name of the ipdev and requires
- # that the IP address will be on it. We need to delete this
- # bridge because we need that device to be a member of our
- # datapath.
- argv += ['--del-match=bridge.%s.[!0-9]*' % ipdev]
-
- # xapi insists that its attempts to create the bridge succeed,
- # so force that to happen.
- argv += ['--add=iface.%s.fake-bridge=true' % (ipdev)]
- else:
- try:
- os.unlink("%s/br-%s" % (vswitch_state_dir, bridge))
- except OSError:
- pass
- argv += ['--del-match=bridge.%s.xs-network-uuids=*' % datapath]
- argv += ['--add=bridge.%s.xs-network-uuids=%s' % (datapath, uuid)
- for uuid in set(network_uuids)]
- if bond_master:
- argv += configure_bond(bond_master)
- modify_config(argv)
-
- # Bring up VLAN slave, plus physical devices other than bond
- # slaves (which we brought up earlier).
- # XXX need to bring up bond itself.
- # XXX need to set MAC address on fake bridge
- if vlan_slave:
- up_netdev(ipdev_name(vlan_slave))
- for physdev_pif in set(physdev_pifs) - set(bond_slave_physdev_pifs):
- configure_physdev(physdev_pif)
-
- # Configure network device for local port.
- configure_local_port(pif)
-
- # Update /etc/issue (which contains the IP address of the management interface)
- os.system("/sbin/update-issue")
-
- if bond_slaves:
- # There seems to be a race somewhere: without this sleep, using
- # XenCenter to create a bond that becomes the management interface
- # fails with "The underlying connection was closed: A connection that
- # was expected to be kept alive was closed by the server." on every
- # second or third try, even though /var/log/messages doesn't show
- # anything unusual.
- #
- # The race is probably present even without vswitch, but bringing up a
- # bond without vswitch involves a built-in pause of 10 seconds or more
- # to wait for the bond to transition from learning to forwarding state.
- time.sleep(5)
+ for p in physical_devices:
+ oc = db.get_pif_record(p)['other_config']
+
+ dev = pif_netdev_name(p)
+
+ mtu = mtu_setting(oc)
+
+ netdev_up(dev, mtu)
-def action_down(pif):
- rec = db.get_pif_record(pif)
- interface = interface_name(pif)
- bridge = bridge_name(pif)
- ipdev = ipdev_name(pif)
-
- # Support "rpm -e vswitch" gracefully by keeping Centos configuration
- # files up-to-date, even though we don't use them or need them.
- f = unconfigure_pif(pif)
- if bridge:
- br = open_network_ifcfg(pif)
- log("Unlinking stale file %s" % br.path())
+ settings, offload = ethtool_settings(oc)
+ if len(settings):
+ run_command(['/sbin/ethtool', '-s', dev] + settings)
+ if len(offload):
+ run_command(['/sbin/ethtool', '-K', dev] + offload)
+
+ if len(physical_devices) > 1:
+ cfgmod_argv += ['# deconfigure bond %s' % pif_netdev_name(pif)]
+ cfgmod_argv += datapath_deconfigure_bond(pif_netdev_name(pif))
+ cfgmod_argv += ['--del-entry=bridge.%s.port=%s' % (bridge,pif_netdev_name(pif))]
+ cfgmod_argv += ['# configure bond %s' % pif_netdev_name(pif)]
+ cfgmod_argv += datapath_configure_bond(pif, physical_devices)
+ cfgmod_argv += ['--add=bridge.%s.port=%s' % (bridge,pif_netdev_name(pif)) ]
+ extra_up_ports += [pif_netdev_name(pif)]
+ else:
+ iface = pif_netdev_name(physical_devices[0])
+ cfgmod_argv += ['# add physical device %s' % iface]
+ cfgmod_argv += ['--add=bridge.%s.port=%s' % (bridge,iface) ]
+
+ return cfgmod_argv,extra_up_ports
+
+def deconfigure_datapath(pif):
+ cfgmod_argv = []
+
+ bridge = pif_bridge_name(pif)
+
+ physical_devices = datapath_get_physical_pifs(pif)
+
+ log("deconfigure_datapath: bridge - %s" % bridge)
+ log("deconfigure_datapath: physical devices - %s" % [pif_netdev_name(p) for p in physical_devices])
+
+ for p in physical_devices:
+ dev = pif_netdev_name(p)
+ cfgmod_argv += ['# deconfigure physical port %s' % dev]
+ cfgmod_argv += datapath_deconfigure_physical(dev)
+ netdev_down(dev)
+
+ if len(physical_devices) > 1:
+ cfgmod_argv += ['# deconfigure bond %s' % pif_netdev_name(pif)]
+ cfgmod_argv += datapath_deconfigure_bond(pif_netdev_name(pif))
+
+ cfgmod_argv += ['# deconfigure bridge %s' % bridge]
+ cfgmod_argv += ['--del-match=bridge.%s.*' % bridge]
+
+ return cfgmod_argv
+
+#
+# Toplevel actions
+#
+
+def action_up(pif):
+ pifrec = db.get_pif_record(pif)
+ cfgmod_argv = []
+ extra_ports = []
+
+ ipdev = pif_ipdev_name(pif)
+ dp = pif_datapath(pif)
+ bridge = pif_bridge_name(dp)
+
+ log("action_up: %s on bridge %s" % (ipdev, bridge))
+
+ ifdown(ipdev)
+
+ if dp:
+ c,e = configure_datapath(dp)
+ cfgmod_argv += c
+ extra_ports += e
+
+ cfgmod_argv += ['# configure xs-network-uuids']
+ cfgmod_argv += ['--del-match=bridge.%s.xs-network-uuids=*' % bridge]
+
+ for nwpif in db.get_pifs_by_device(db.get_pif_record(pif)['device']):
+ rec = db.get_pif_record(nwpif)
+ if nwpif != pif and not rec['currently_attached']:
+ log("Network PIF %s not currently attached (%s)" % (rec['uuid'],pifrec['uuid']))
+ continue
+ nwrec = db.get_network_record(rec['network'])
+ cfgmod_argv += ['--add=bridge.%s.xs-network-uuids=%s' % (bridge, nwrec['uuid'])]
+
+ cfgmod_argv += ["# deconfigure ipdev %s" % ipdev]
+ cfgmod_argv += datapath_deconfigure_ipdev(ipdev)
+ cfgmod_argv += ["# reconfigure ipdev %s" % ipdev]
+ cfgmod_argv += ['--add=bridge.%s.port=%s' % (bridge, ipdev)]
+
+ f = ipdev_configure_network(pif)
+ f.close()
+
+ # /etc/xensource/scripts/vif needs to know where to add VIFs.
+ if pif_is_vlan(pif):
+ if not bridge:
+ raise Error("Unbridged VLAN devices not implemented yet")
+ cfgmod_argv += ['--add=vlan.%s.tag=%s' % (ipdev, pifrec['VLAN'])]
+ cfgmod_argv += ['--add=iface.%s.internal=true' % (ipdev)]
+ cfgmod_argv += ['--add=iface.%s.fake-bridge=true' % (ipdev)]
+ if not os.path.exists(vswitch_state_dir):
+ os.mkdir(vswitch_state_dir)
+ br = ConfigurationFile("br-%s" % ipdev, vswitch_state_dir)
+ br.write("VLAN_SLAVE=%s\n" % bridge)
+ br.write("VLAN_VID=%s\n" % pifrec['VLAN'])
+ br.close()
+ f.attach_child(br)
+ else:
+ br = ConfigurationFile("br-%s" % ipdev, vswitch_state_dir)
br.unlink()
f.attach_child(br)
+
+ # Apply updated configuration.
try:
f.apply()
+
+ datapath_modify_config(cfgmod_argv)
+
+ ifup(ipdev)
+
+ for p in extra_ports:
+ netdev_up(p)
+
+ # Update /etc/issue (which contains the IP address of the management interface)
+ os.system("/sbin/update-issue")
+
f.commit()
except Error, e:
- log("action_down failed to apply changes: %s" % e.msg)
+ log("failed to apply changes: %s" % e.msg)
f.revert()
raise
- argv = []
- if rec['VLAN'] != '-1':
- # Get rid of the VLAN device itself.
- down_netdev(ipdev)
- argv += interface_deconfigure_commands(ipdev)
+def action_down(pif):
+ pifrec = db.get_pif_record(pif)
+ cfgmod_argv = []
+
+ ipdev = pif_ipdev_name(pif)
+ dp = pif_datapath(pif)
+ bridge = pif_bridge_name(dp)
+
+ log("action_down: %s on bridge %s" % (ipdev, bridge))
+
+ ifdown(ipdev)
+
+ if dp:
+ nw = db.get_pif_record(pif)['network']
+ nwrec = db.get_network_record(nw)
+ cfgmod_argv += ['# deconfigure xs-network-uuids']
+ cfgmod_argv += ['--del-entry=bridge.%s.xs-network-uuids=%s' % (bridge,nwrec['uuid'])]
+
+ log("deconfigure ipdev %s on %s" % (ipdev,bridge))
+ cfgmod_argv += ["# deconfigure ipdev %s" % ipdev]
+ cfgmod_argv += datapath_deconfigure_ipdev(ipdev)
+
+ f = ipdev_open_ifcfg(pif)
+ f.unlink()
- # If the VLAN's slave is attached, stop here.
- slave = get_vlan_slave_of_pif(pif)
+ if pif_is_vlan(pif):
+ br = ConfigurationFile("br-%s" % bridge, vswitch_state_dir)
+ br.unlink()
+ f.attach_child(br)
+
+ # If the VLAN's slave is attached, leave datapath setup.
+ slave = pif_get_vlan_slave(pif)
if db.get_pif_record(slave)['currently_attached']:
- log("VLAN slave is currently attached")
- modify_config(argv)
- return
-
- # If the VLAN's slave has other VLANs that are attached, stop here.
- masters = get_vlan_masters_of_pif(slave)
- for m in masters:
- if m != pif and db.get_pif_record(m)['currently_attached']:
- log("VLAN slave has other master %s" % interface_naem(m))
- modify_config(argv)
- return
-
- # Otherwise, take down the VLAN's slave too.
- log("No more masters, bring down vlan slave %s" % interface_name(slave))
- pif = slave
+ log("action_down: vlan slave is currently attached")
+ dp = None
+
+ # If the VLAN's slave has other VLANs that are attached, leave datapath setup.
+ for master in pif_get_vlan_masters(slave):
+ if master != pif and db.get_pif_record(master)['currently_attached']:
+ log("action_down: vlan slave has other master: %s" % pif_netdev_name(master))
+ dp = None
+
+ # Otherwise, take down the datapath too (fall through)
+ if dp:
+ log("action_down: no more masters, bring down slave %s" % bridge)
else:
# Stop here if this PIF has attached VLAN masters.
- vlan_masters = get_vlan_masters_of_pif(pif)
- log("VLAN masters of %s - %s" % (rec['device'], [interface_name(m) for m in vlan_masters]))
- for m in vlan_masters:
- if db.get_pif_record(m)['currently_attached']:
- # XXX remove IP address
- log("Leaving %s up due to currently attached VLAN master %s" % (interface, interface_name(m)))
- return
-
- # pif is now either a bond or a physical device which needs to be
- # brought down. pif might have changed so re-check all its attributes.
- rec = db.get_pif_record(pif)
- interface = interface_name(pif)
- bridge = bridge_name(pif)
- ipdev = ipdev_name(pif)
+ masters = [db.get_pif_record(m)['VLAN'] for m in pif_get_vlan_masters(pif) if db.get_pif_record(m)['currently_attached']]
+ if len(masters) > 0:
+ log("Leaving datapath %s up due to currently attached VLAN masters %s" % (bridge, masters))
+ dp = None
+ if dp:
+ cfgmod_argv += deconfigure_datapath(dp)
- bond_slaves = get_bond_slaves_of_pif(pif)
- log("bond slaves of %s - %s" % (rec['device'], [interface_name(s) for s in bond_slaves]))
- for slave in bond_slaves:
- slave_interface = interface_name(slave)
- log("bring down bond slave %s" % slave_interface)
- argv += interface_deconfigure_commands(slave_interface)
- down_netdev(slave_interface)
+ try:
+ f.apply()
- argv += interface_deconfigure_commands(ipdev)
- down_netdev(ipdev)
+ datapath_modify_config(cfgmod_argv)
- argv += ['--del-match', 'bridge.%s.*' % datapath_name(pif)]
- argv += ['--del-match', 'bonding.%s.[!0-9]*' % interface]
- modify_config(argv)
+ f.commit()
+ except Error, e:
+ log("action_down failed to apply changes: %s" % e.msg)
+ f.revert()
+ raise
def action_rewrite(pif):
- # Support "rpm -e vswitch" gracefully by keeping Centos configuration
- # files up-to-date, even though we don't use them or need them.
- pifrec = db.get_pif_record(pif)
- f = configure_pif(pif)
- interface = interface_name(pif)
- bridge = bridge_name(pif)
- mode = pifrec['ip_configuration_mode']
- if bridge:
- log("Configuring %s using %s configuration" % (bridge, mode))
- br = open_network_ifcfg(pif)
- configure_network(pif, br)
- br.close()
- f.attach_child(br)
- else:
- log("Configuring %s using %s configuration" % (interface, mode))
- configure_network(pif, f)
+ f = ipdev_configure_network(pif)
f.close()
try:
f.apply()
f.revert()
raise
- # We have no code of our own to run here.
- pass
-
-def action_force_rewrite(interface, config):
+def action_force_rewrite(bridge, config):
raise Error("Force rewrite is not implemented yet.")
def main(argv=None):
global output_directory, management_pif
-
+
session = None
pif_uuid = None
pif = None
force_interface = None
force_management = False
-
+
if argv is None:
argv = sys.argv
raise Usage(msg)
force_rewrite_config = {}
-
+
for o,a in arglist:
if o == "--output-directory":
output_directory = a
# backwards compatibility
if action == "rewrite-configuration": action = "rewrite"
-
+
if output_directory and ( session or pif ):
raise Usage("--session/--pif cannot be used with --output-directory")
if ( session or pif ) and pif_uuid:
raise Usage("No PIF given")
if force_management:
- # pif is going to be the management pif
+ # pif is going to be the management pif
management_pif = pif
else:
# pif is not going to be the management pif.
# Save cache.
db.save(dbcache_file)
-
+
except Usage, err:
print >>sys.stderr, err.msg
print >>sys.stderr, "For help use --help."
except Error, err:
log(err.msg)
return 1
-
- return 0
-\f
-# The following code allows interface-reconfigure to keep Centos
-# network configuration files up-to-date, even though the vswitch
-# never uses them. In turn, that means that "rpm -e vswitch" does not
-# have to update any configuration files.
-
-def configure_ethtool(oc, f):
- # Options for "ethtool -s"
- settings = None
- setting_opts = ["autoneg", "speed", "duplex"]
- # Options for "ethtool -K"
- offload = None
- offload_opts = ["rx", "tx", "sg", "tso", "ufo", "gso"]
-
- for opt in [opt for opt in setting_opts + offload_opts if oc.has_key("ethtool-" + opt)]:
- val = oc["ethtool-" + opt]
-
- if opt in ["speed"]:
- if val in ["10", "100", "1000"]:
- val = "speed " + val
- else:
- log("Invalid value for ethtool-speed = %s. Must be 10|100|1000." % val)
- val = None
- elif opt in ["duplex"]:
- if val in ["half", "full"]:
- val = "duplex " + val
- else:
- log("Invalid value for ethtool-duplex = %s. Must be half|full." % val)
- val = None
- elif opt in ["autoneg"] + offload_opts:
- if val in ["true", "on"]:
- val = opt + " on"
- elif val in ["false", "off"]:
- val = opt + " off"
- else:
- log("Invalid value for ethtool-%s = %s. Must be on|true|off|false." % (opt, val))
- val = None
-
- if opt in setting_opts:
- if val and settings:
- settings = settings + " " + val
- else:
- settings = val
- elif opt in offload_opts:
- if val and offload:
- offload = offload + " " + val
- else:
- offload = val
-
- if settings:
- f.write("ETHTOOL_OPTS=\"%s\"\n" % settings)
- if offload:
- f.write("ETHTOOL_OFFLOAD_OPTS=\"%s\"\n" % offload)
-
-def configure_mtu(oc, f):
- if not oc.has_key('mtu'):
- return
-
- try:
- mtu = int(oc['mtu'])
- f.write("MTU=%d\n" % mtu)
- except ValueError, x:
- log("Invalid value for mtu = %s" % mtu)
-
-def configure_static_routes(interface, oc, f):
- """Open a route-<interface> file for static routes.
-
- Opens the static routes configuration file for interface and writes one
- line for each route specified in the network's other config "static-routes" value.
- E.g. if
- interface ( RO): xenbr1
- other-config (MRW): static-routes: 172.16.0.0/15/192.168.0.3,172.18.0.0/16/192.168.0.4;...
-
- Then route-xenbr1 should be
- 172.16.0.0/15 via 192.168.0.3 dev xenbr1
- 172.18.0.0/16 via 192.168.0.4 dev xenbr1
- """
- fname = "route-%s" % interface
- if oc.has_key('static-routes'):
- # The key is present - extract comma seperates entries
- lines = oc['static-routes'].split(',')
- else:
- # The key is not present, i.e. there are no static routes
- lines = []
-
- child = ConfigurationFile(fname)
- child.write("# DO NOT EDIT: This file (%s) was autogenerated by %s\n" % \
- (os.path.basename(child.path()), os.path.basename(sys.argv[0])))
-
- try:
- for l in lines:
- network, masklen, gateway = l.split('/')
- child.write("%s/%s via %s dev %s\n" % (network, masklen, gateway, interface))
-
- f.attach_child(child)
- child.close()
-
- except ValueError, e:
- log("Error in other-config['static-routes'] format for network %s: %s" % (interface, e))
-
-def __open_ifcfg(interface):
- """Open a network interface configuration file.
-
- Opens the configuration file for interface, writes a header and
- common options and returns the file object.
- """
- fname = "ifcfg-%s" % interface
- f = ConfigurationFile(fname)
-
- f.write("# DO NOT EDIT: This file (%s) was autogenerated by %s\n" % \
- (os.path.basename(f.path()), os.path.basename(sys.argv[0])))
- f.write("XEMANAGED=yes\n")
- f.write("DEVICE=%s\n" % interface)
- f.write("ONBOOT=no\n")
-
- return f
-
-def open_network_ifcfg(pif):
- bridge = bridge_name(pif)
- interface = interface_name(pif)
- if bridge:
- return __open_ifcfg(bridge)
- else:
- return __open_ifcfg(interface)
-
-
-def open_pif_ifcfg(pif):
- pifrec = db.get_pif_record(pif)
-
- log("Configuring %s (%s)" % (interface_name(pif), pifrec['MAC']))
-
- f = __open_ifcfg(interface_name(pif))
-
- if pifrec.has_key('other_config'):
- configure_ethtool(pifrec['other_config'], f)
- configure_mtu(pifrec['other_config'], f)
-
- return f
-
-def configure_network(pif, f):
- """Write the configuration file for a network.
-
- Writes configuration derived from the network object into the relevant
- ifcfg file. The configuration file is passed in, but if the network is
- bridgeless it will be ifcfg-<interface>, otherwise it will be ifcfg-<bridge>.
-
- This routine may also write ifcfg files of the networks corresponding to other PIFs
- in order to maintain consistency.
-
- params:
- pif: Opaque_ref of pif
- f : ConfigurationFile(/path/to/ifcfg) to which we append network configuration
- """
-
- pifrec = db.get_pif_record(pif)
- nw = pifrec['network']
- nwrec = db.get_network_record(nw)
- oc = None
- bridge = bridge_name(pif)
- interface = interface_name(pif)
- if bridge:
- device = bridge
- else:
- device = interface
-
- if nwrec.has_key('other_config'):
- configure_ethtool(nwrec['other_config'], f)
- configure_mtu(nwrec['other_config'], f)
- configure_static_routes(device, nwrec['other_config'], f)
-
-
- if pifrec.has_key('other_config'):
- oc = pifrec['other_config']
-
- if device == bridge:
- f.write("TYPE=Bridge\n")
- f.write("DELAY=0\n")
- f.write("STP=off\n")
- f.write("PIFDEV=%s\n" % interface_name(pif))
-
- if pifrec['ip_configuration_mode'] == "DHCP":
- f.write("BOOTPROTO=dhcp\n")
- f.write("PERSISTENT_DHCLIENT=yes\n")
- elif pifrec['ip_configuration_mode'] == "Static":
- f.write("BOOTPROTO=none\n")
- f.write("NETMASK=%(netmask)s\n" % pifrec)
- f.write("IPADDR=%(IP)s\n" % pifrec)
- f.write("GATEWAY=%(gateway)s\n" % pifrec)
- elif pifrec['ip_configuration_mode'] == "None":
- f.write("BOOTPROTO=none\n")
- else:
- raise Error("Unknown ip-configuration-mode %s" % pifrec['ip_configuration_mode'])
-
- if pifrec.has_key('DNS') and pifrec['DNS'] != "":
- ServerList = pifrec['DNS'].split(",")
- for i in range(len(ServerList)): f.write("DNS%d=%s\n" % (i+1, ServerList[i]))
- if oc and oc.has_key('domain'):
- f.write("DOMAIN='%s'\n" % oc['domain'].replace(',', ' '))
-
- # We only allow one ifcfg-xenbr* to have PEERDNS=yes and there can be only one GATEWAYDEV in /etc/sysconfig/network.
- # The peerdns pif will be the one with pif::other-config:peerdns=true, or the mgmt pif if none have this set.
- # The gateway pif will be the one with pif::other-config:defaultroute=true, or the mgmt pif if none have this set.
-
- # Work out which pif on this host should be the one with PEERDNS=yes and which should be the GATEWAYDEV
- #
- # Note: we prune out the bond master pif (if it exists).
- # This is because when we are called to bring up an interface with a bond master, it is implicit that
- # we should bring down that master.
- pifs_on_host = [ __pif for __pif in db.get_all_pifs() if
- not __pif in get_bond_masters_of_pif(pif) ]
- other_pifs_on_host = [ __pif for __pif in pifs_on_host if __pif != pif ]
-
- peerdns_pif = None
- defaultroute_pif = None
-
- # loop through all the pifs on this host looking for one with
- # other-config:peerdns = true, and one with
- # other-config:default-route=true
- for __pif in pifs_on_host:
- __pifrec = db.get_pif_record(__pif)
- __oc = __pifrec['other_config']
- if __oc.has_key('peerdns') and __oc['peerdns'] == 'true':
- if peerdns_pif == None:
- peerdns_pif = __pif
- else:
- log('Warning: multiple pifs with "peerdns=true" - choosing %s and ignoring %s' % \
- (db.get_pif_record(peerdns_pif)['device'], __pifrec['device']))
- if __oc.has_key('defaultroute') and __oc['defaultroute'] == 'true':
- if defaultroute_pif == None:
- defaultroute_pif = __pif
- else:
- log('Warning: multiple pifs with "defaultroute=true" - choosing %s and ignoring %s' % \
- (db.get_pif_record(defaultroute_pif)['device'], __pifrec['device']))
-
- # If no pif is explicitly specified then use the mgmt pif for peerdns/defaultroute
- if peerdns_pif == None:
- peerdns_pif = management_pif
- if defaultroute_pif == None:
- defaultroute_pif = management_pif
-
- # Update all the other network's ifcfg files and ensure consistency
- for __pif in other_pifs_on_host:
- __f = open_network_ifcfg(__pif)
- peerdns_line_wanted = 'PEERDNS=%s\n' % ((__pif == peerdns_pif) and 'yes' or 'no')
- lines = __f.readlines()
-
- if not peerdns_line_wanted in lines:
- # the PIF selected for DNS has changed and as a result this ifcfg file needs rewriting
- for line in lines:
- if not line.lstrip().startswith('PEERDNS'):
- __f.write(line)
- log("Setting %s in %s" % (peerdns_line_wanted.strip(), __f.path()))
- __f.write(peerdns_line_wanted)
- __f.close()
- f.attach_child(__f)
-
- else:
- # There is no need to change this ifcfg file. So don't attach_child.
- pass
-
- # ... and for this pif too
- f.write('PEERDNS=%s\n' % ((pif == peerdns_pif) and 'yes' or 'no'))
-
- # Update gatewaydev
- fnetwork = ConfigurationFile("network", "/etc/sysconfig")
- for line in fnetwork.readlines():
- if line.lstrip().startswith('GATEWAY') :
- continue
- fnetwork.write(line)
- if defaultroute_pif:
- gatewaydev = bridge_name(defaultroute_pif)
- if not gatewaydev:
- gatewaydev = interface_name(defaultroute_pif)
- fnetwork.write('GATEWAYDEV=%s\n' % gatewaydev)
- fnetwork.close()
- f.attach_child(fnetwork)
-
- return
-
-
-def configure_physical_interface(pif):
- """Write the configuration for a physical interface.
-
- Writes the configuration file for the physical interface described by
- the pif object.
-
- Returns the open file handle for the interface configuration file.
- """
-
- pifrec = db.get_pif_record(pif)
-
- f = open_pif_ifcfg(pif)
-
- f.write("TYPE=Ethernet\n")
- f.write("HWADDR=%(MAC)s\n" % pifrec)
-
- return f
-
-def configure_bond_interface(pif):
- """Write the configuration for a bond interface.
-
- Writes the configuration file for the bond interface described by
- the pif object. Handles writing the configuration for the slave
- interfaces.
-
- Returns the open file handle for the bond interface configuration
- file.
- """
-
- pifrec = db.get_pif_record(pif)
- oc = pifrec['other_config']
- f = open_pif_ifcfg(pif)
-
- if pifrec['MAC'] != "":
- f.write("MACADDR=%s\n" % pifrec['MAC'])
-
- for slave in get_bond_slaves_of_pif(pif):
- s = configure_physical_interface(slave)
- s.write("MASTER=%(device)s\n" % pifrec)
- s.write("SLAVE=yes\n")
- s.close()
- f.attach_child(s)
-
- # The bond option defaults
- bond_options = {
- "mode": "balance-slb",
- "miimon": "100",
- "downdelay": "200",
- "updelay": "31000",
- "use_carrier": "1",
- }
-
- # override defaults with values from other-config whose keys being with "bond-"
- overrides = filter(lambda (key,val): key.startswith("bond-"), oc.items())
- overrides = map(lambda (key,val): (key[5:], val), overrides)
- bond_options.update(overrides)
-
- # write the bond options to ifcfg-bondX
- f.write('BONDING_OPTS="')
- for (name,val) in bond_options.items():
- f.write("%s=%s " % (name,val))
- f.write('"\n')
- return f
-
-def configure_vlan_interface(pif):
- """Write the configuration for a VLAN interface.
-
- Writes the configuration file for the VLAN interface described by
- the pif object. Handles writing the configuration for the master
- interface if necessary.
-
- Returns the open file handle for the VLAN interface configuration
- file.
- """
-
- slave = configure_pif(get_vlan_slave_of_pif(pif))
- slave.close()
-
- f = open_pif_ifcfg(pif)
- f.write("VLAN=yes\n")
- f.attach_child(slave)
-
- return f
-def configure_pif(pif):
- """Write the configuration for a PIF object.
-
- Writes the configuration file the PIF and all dependent
- interfaces (bond slaves and VLAN masters etc).
-
- Returns the open file handle for the interface configuration file.
- """
-
- pifrec = db.get_pif_record(pif)
-
- if pifrec['VLAN'] != '-1':
- f = configure_vlan_interface(pif)
- elif len(pifrec['bond_master_of']) != 0:
- f = configure_bond_interface(pif)
- else:
- f = configure_physical_interface(pif)
-
- bridge = bridge_name(pif)
- if bridge:
- f.write("BRIDGE=%s\n" % bridge)
-
- return f
+ return 0
-def unconfigure_pif(pif):
- """Clear up the files created by configure_pif"""
- f = open_pif_ifcfg(pif)
- log("Unlinking stale file %s" % f.path())
- f.unlink()
- return f
-\f
if __name__ == "__main__":
rc = 1
try:
if not debug_mode():
syslog.closelog()
-
+
sys.exit(rc)
projects / openvswitch / commitdiff