return None
def get_netdev_by_mac(mac):
- maybe = None
for device in os.listdir("/sys/class/net"):
dev_mac = get_netdev_mac(device)
- if dev_mac and mac.lower() == dev_mac.lower():
- if get_netdev_tx_queue_len(device):
+ if (dev_mac and mac.lower() == dev_mac.lower() and
+ get_netdev_tx_queue_len(device)):
return device
- if not maybe:
- # Probably a datapath internal port.
- maybe = device
- return maybe
+ 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)
+ v = xml.createTextNode(val)
+ e.appendChild(v)
+def str_from_xml(n):
+ def getText(nodelist):
+ rc = ""
+ for node in nodelist:
+ if node.nodeType == node.TEXT_NODE:
+ rc = rc + node.data
+ return rc
+ return getText(n.childNodes).strip()
+
+
+def bool_to_xml(xml, parent, tag, val):
+ if val:
+ str_to_xml(xml, parent, tag, "True")
+ else:
+ str_to_xml(xml, parent, tag, "False")
+def bool_from_xml(n):
+ s = str_from_xml(n)
+ if s == "True":
+ return True
+ elif s == "False":
+ return False
+ else:
+ raise Error("Unknown boolean value %s" % s);
+
+def strlist_to_xml(xml, parent, ltag, itag, val):
+ e = xml.createElement(ltag)
+ parent.appendChild(e)
+ for v in val:
+ c = xml.createElement(itag)
+ e.appendChild(c)
+ cv = xml.createTextNode(v)
+ c.appendChild(cv)
+def strlist_from_xml(n, ltag, itag):
+ ret = []
+ for n in n.childNodes:
+ if n.nodeName == itag:
+ ret.append(str_from_xml(n))
+ return ret
+
+def otherconfig_to_xml(xml, parent, val, attrs):
+ otherconfig = xml.createElement("other_config")
+ parent.appendChild(otherconfig)
+ for n,v in val.items():
+ if not n in attrs:
+ raise Error("Unknown other-config attribute: %s" % n)
+ str_to_xml(xml, otherconfig, n, v)
+def otherconfig_from_xml(n, attrs):
+ ret = {}
+ for n in n.childNodes:
+ if n.nodeName in attrs:
+ ret[n.nodeName] = str_from_xml(n)
+ return ret
+
+#
+# Definitions of the database objects (and their attributes) used by interface-reconfigure.
+#
+# Each object is defined by a dictionary mapping an attribute name in
+# the xapi database to a tuple containing two items:
+# - a function which takes this attribute and encodes it as XML.
+# - a function which takes XML and decocdes it into a value.
+#
+# other-config attributes are specified as a simple array of strings
+
+PIF_XML_TAG = "pif"
+VLAN_XML_TAG = "vlan"
+BOND_XML_TAG = "bond"
+NETWORK_XML_TAG = "network"
+
+ETHTOOL_OTHERCONFIG_ATTRS = ['ethtool-%s' % x for x in 'autoneg', 'speed', 'duplex', 'rx', 'tx', 'sg', 'tso', 'ufo', 'gso' ]
+
+PIF_ATTRS = { 'uuid': (str_to_xml,str_from_xml),
+ 'management': (bool_to_xml,bool_from_xml),
+ 'network': (str_to_xml,str_from_xml),
+ 'device': (str_to_xml,str_from_xml),
+ 'bond_master_of': (lambda x, p, t, v: strlist_to_xml(x, p, 'bond_master_of', 'slave', v),
+ lambda n: strlist_from_xml(n, 'bond_master_of', 'slave')),
+ 'bond_slave_of': (str_to_xml,str_from_xml),
+ 'VLAN': (str_to_xml,str_from_xml),
+ 'VLAN_master_of': (str_to_xml,str_from_xml),
+ 'VLAN_slave_of': (lambda x, p, t, v: strlist_to_xml(x, p, 'VLAN_slave_of', 'master', v),
+ lambda n: strlist_from_xml(n, 'VLAN_slave_Of', 'master')),
+ 'ip_configuration_mode': (str_to_xml,str_from_xml),
+ 'IP': (str_to_xml,str_from_xml),
+ 'netmask': (str_to_xml,str_from_xml),
+ 'gateway': (str_to_xml,str_from_xml),
+ 'DNS': (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)),
+ }
+
+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_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: strlist_from_xml(n, 'PIFs', 'PIF')),
+ 'other_config': (lambda x, p, t, v: otherconfig_to_xml(x, p, v, NETWORK_OTHERCONFIG_ATTRS),
+ 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"
+ f = open(filename, "r")
+ lines = [x.strip("\n") for x in f.readlines()]
+ f.close()
+
+ defs = [ (l[:l.find("=")], l[(l.find("=") + 1):]) for l in lines ]
+ defs = [ (a, b.strip("'")) for (a,b) in defs ]
+
+ return dict(defs)
+ def __pif_on_host(self,pif):
+ return self.__pifs.has_key(pif)
+
+ def __get_pif_records_from_xapi(self, session, host):
+ self.__pifs = {}
+ for (p,rec) in session.xenapi.PIF.get_all_records().items():
+ if rec['host'] != host:
+ continue
+ self.__pifs[p] = {}
+ for f in PIF_ATTRS:
+ self.__pifs[p][f] = rec[f]
+ self.__pifs[p]['other_config'] = {}
+ for f in PIF_OTHERCONFIG_ATTRS:
+ if not rec['other_config'].has_key(f): continue
+ self.__pifs[p]['other_config'][f] = rec['other_config'][f]
+
+ def __get_vlan_records_from_xapi(self, session):
+ self.__vlans = {}
+ for v in session.xenapi.VLAN.get_all():
+ rec = session.xenapi.VLAN.get_record(v)
+ if not self.__pif_on_host(rec['untagged_PIF']):
+ continue
+ self.__vlans[v] = {}
+ for f in VLAN_ATTRS:
+ self.__vlans[v][f] = rec[f]
+
+ def __get_bond_records_from_xapi(self, session):
+ self.__bonds = {}
+ for b in session.xenapi.Bond.get_all():
+ rec = session.xenapi.Bond.get_record(b)
+ if not self.__pif_on_host(rec['master']):
+ continue
+ self.__bonds[b] = {}
+ for f in BOND_ATTRS:
+ self.__bonds[b][f] = rec[f]
+
+ def __get_network_records_from_xapi(self, session):
+ self.__networks = {}
+ for n in session.xenapi.network.get_all():
+ rec = session.xenapi.network.get_record(n)
+ self.__networks[n] = {}
+ for f in NETWORK_ATTRS:
+ self.__networks[n][f] = rec[f]
+ self.__networks[n]['other_config'] = {}
+ for f in NETWORK_OTHERCONFIG_ATTRS:
+ if not rec['other_config'].has_key(f): continue
+ self.__networks[n]['other_config'][f] = rec['other_config'][f]
+
+ def __to_xml(self, xml, parent, key, ref, rec, attrs):
+ """Encode a database object as XML"""
+ e = xml.createElement(key)
+ parent.appendChild(e)
+ if ref:
+ e.setAttribute('ref', ref)
+
+ for n,v in rec.items():
+ if attrs.has_key(n):
+ h,_ = attrs[n]
+ h(xml, e, n, v)
+ else:
+ raise Error("Unknown attribute %s" % n)
+ def __from_xml(self, e, attrs):
+ """Decode a database object from XML"""
+ ref = e.attributes['ref'].value
+ rec = {}
+ for n in e.childNodes:
+ if n.nodeName in attrs:
+ _,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")
projects / openvswitch / commitdiff