mirror of
https://github.com/xen-project/xen.git
synced 2026-10-28 02:01:24 +01:00
265 lines
8.4 KiB
Python
265 lines
8.4 KiB
Python
#!/usr/bin/python
|
|
"""
|
|
Copyright (C) International Business Machines Corp., 2005, 2006
|
|
Authors: Dan Smith <danms@us.ibm.com>
|
|
Daniel Stekloff <dsteklof@us.ibm.com>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; under version 2 of the License.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
"""
|
|
|
|
import sys
|
|
import commands
|
|
import os
|
|
import re
|
|
import time
|
|
import random
|
|
from xen.xend.sxp import Parser
|
|
|
|
from Xm import *
|
|
from Test import *
|
|
from config import *
|
|
|
|
class NetworkError(Exception):
|
|
def __init__(self, msg):
|
|
self.errMsg = msg
|
|
|
|
def __str__(self):
|
|
return str(self.errMsg)
|
|
|
|
def getXendNetConfig():
|
|
# Find out what environment we're in: bridge, nat, or route
|
|
xconfig = os.getenv("XEND_CONFIG")
|
|
if not xconfig:
|
|
xconfig = "/etc/xen/xend-config.sxp"
|
|
|
|
configfile = open(xconfig, 'r')
|
|
S = configfile.read()
|
|
pin = Parser()
|
|
pin.input(S)
|
|
pin.input_eof()
|
|
val = pin.get_val()
|
|
while val[0] != 'network-script':
|
|
val = pin.get_val()
|
|
|
|
if val[1] == "network-bridge":
|
|
netenv = "bridge"
|
|
elif val[1] == "network-route":
|
|
netenv = "route"
|
|
elif val[1] == "network-nat":
|
|
netenv = "nat"
|
|
else:
|
|
raise NetworkError("Failed to get network env from xend config")
|
|
|
|
configfile.close()
|
|
return netenv
|
|
|
|
def checkZeroconfAddresses():
|
|
# Make sure there aren't existing zeroconf addresses.
|
|
rc, out = traceCommand("ip addr show |grep \"inet 169.254\" | grep -v vif")
|
|
if rc == 0:
|
|
raise NetworkError("Zeroconf addresses already used: %s" % out)
|
|
|
|
class NetConfig:
|
|
|
|
def __init__(self):
|
|
self.netenv = getXendNetConfig()
|
|
self.used_ips = {}
|
|
self.free_oct_ips = [ 0, 0, 0, 0 ]
|
|
self.total_ips = 0
|
|
|
|
if NETWORK_IP_RANGE == 'dhcp':
|
|
self.netmask = NETWORK_IP_RANGE
|
|
self.network = NETWORK_IP_RANGE
|
|
self.max_ip = NETWORK_IP_RANGE
|
|
self.min_ip = NETWORK_IP_RANGE
|
|
else:
|
|
self.netmask = NETMASK
|
|
self.network = NETWORK
|
|
s_ip = ''
|
|
|
|
# Get starting ip and max ip from configured ip range
|
|
s_ip = NETWORK_IP_RANGE
|
|
ips = s_ip.split("-")
|
|
self.max_ip = ips[1]
|
|
self.min_ip = ips[0]
|
|
|
|
self.__setMaxNumberIPs()
|
|
|
|
if self.network == "169.254.0.0":
|
|
checkZeroconfAddresses()
|
|
|
|
# Clean out any aliases in the network range for vif0.0. If
|
|
# an alias exists, a test xendevice add command could fail.
|
|
if NETWORK_IP_RANGE != "dhcp":
|
|
self.__cleanDom0Aliases()
|
|
|
|
def __setMaxNumberIPs(self):
|
|
# Count the number of IPs available, to help tests know whether they
|
|
# have enough to run or not
|
|
masko = self.netmask.split('.')
|
|
maxo = self.max_ip.split('.')
|
|
mino = self.min_ip.split('.')
|
|
ips = 0
|
|
|
|
# Last octet
|
|
self.free_oct_ips[3] = (int(maxo[3]) - int(mino[3])) + 1
|
|
|
|
# 3rd octet
|
|
self.free_oct_ips[2] = (int(maxo[2]) - int(mino[2])) + 1
|
|
|
|
# 2nd octet
|
|
self.free_oct_ips[1] = (int(maxo[1]) - int(mino[1])) + 1
|
|
|
|
# 1st octet
|
|
self.free_oct_ips[0] = (int(maxo[0]) - int(mino[0])) + 1
|
|
|
|
self.total_ips = self.free_oct_ips[3]
|
|
if self.free_oct_ips[2] > 1:
|
|
self.total_ips = (self.total_ips * self.free_oct_ips[2])
|
|
if self.free_oct_ips[1] > 1:
|
|
self.total_ips = (self.total_ips * self.free_oct_ips[1])
|
|
if self.free_oct_ips[0] > 1:
|
|
self.total_ips = (self.total_ips * self.free_oct_ips[0])
|
|
|
|
def __cleanDom0Aliases(self):
|
|
# Remove any aliases within the supplied network IP range on dom0
|
|
scmd = 'ip addr show dev vif0.0'
|
|
|
|
status, output = traceCommand(scmd)
|
|
if status:
|
|
raise NetworkError("Failed to show vif0.0 aliases: %d" % status)
|
|
|
|
lines = output.split("\n")
|
|
for line in lines:
|
|
ip = re.search('(\d+\.\d+\.\d+\.\d+)', line)
|
|
if ip and self.isIPInRange(ip.group(1)) == True:
|
|
dcmd = 'ip addr del %s dev vif0.0' % ip.group(1)
|
|
dstatus, doutput = traceCommand(dcmd)
|
|
if dstatus:
|
|
raise NetworkError("Failed to remove vif0.0 aliases: %d" % status)
|
|
|
|
def getNetEnv(self):
|
|
return self.netenv
|
|
|
|
def setUsedIP(self, domname, interface, ip):
|
|
self.used_ips['%s:%s' % (domname, interface)] = ip
|
|
|
|
def __findFirstOctetIP(self, prefix, min, max):
|
|
for i in range(min, max):
|
|
ip = '%s%s' % (prefix, str(i))
|
|
found = False
|
|
for k in self.used_ips.keys():
|
|
if self.used_ips[k] == ip:
|
|
found = True
|
|
if found == False:
|
|
return ip
|
|
|
|
if found == True:
|
|
return None
|
|
|
|
def getFreeIP(self, domname, interface):
|
|
# Get a free IP. It uses the starting ip octets and then the
|
|
# total number of allowed numbers for that octet. It only
|
|
# calculates ips for the last two octets, we shouldn't need more
|
|
start_octets = self.min_ip.split(".")
|
|
ip = None
|
|
|
|
# Only working with ips from last two octets, shouldn't need more
|
|
max = int(start_octets[2]) + self.free_oct_ips[2]
|
|
for i in range(int(start_octets[2]), max):
|
|
prefix = '%s.%s.%s.' % (start_octets[0], start_octets[1], str(i))
|
|
ip = self.__findFirstOctetIP(prefix, int(start_octets[3]), self.free_oct_ips[3])
|
|
if ip:
|
|
break
|
|
|
|
if not ip:
|
|
raise NetworkError("Ran out of configured addresses.")
|
|
|
|
self.setUsedIP(domname, interface, ip)
|
|
return ip
|
|
|
|
def getNetMask(self):
|
|
return self.netmask
|
|
|
|
def getNetwork(self):
|
|
return self.network
|
|
|
|
def getIP(self, domname, interface):
|
|
# Depending on environment, set an IP. Uses the configured range
|
|
# of IPs, network address, and netmask
|
|
if NETWORK_IP_RANGE == "dhcp":
|
|
return None
|
|
|
|
# Make sure domain and interface aren't already assigned an IP
|
|
if self.used_ips.has_key('%s:%s' % (domname, interface)):
|
|
raise NetworkError("Domain %s interface %s is already has IP"
|
|
% (domname, interface))
|
|
|
|
return self.getFreeIP(domname, interface)
|
|
|
|
def setIP(self, domname, interface, ip):
|
|
# Make sure domain and interface aren't already assigned an IP
|
|
if self.used_ips.has_key('%s:%s' % (domname, interface)):
|
|
raise NetworkError("Domain %s interface %s is already has IP"
|
|
% (domname, interface))
|
|
|
|
self.setUsedIP(domname, interface, ip)
|
|
|
|
def releaseIP(self, domname, interface, ip):
|
|
if self.used_ips.has_key('%s:%s' % (domname, interface)):
|
|
del self.used_ips['%s:%s' % (domname, interface)]
|
|
|
|
def getNumberAllowedIPs(self):
|
|
return self.total_ips
|
|
|
|
def canRunNetTest(self, ips):
|
|
# Check to see if a test can run, returns true or false. Input is
|
|
# number of ips needed.
|
|
if NETWORK_IP_RANGE == "dhcp":
|
|
return True
|
|
|
|
if self.total_ips >= ips:
|
|
return True
|
|
|
|
return False
|
|
|
|
def isIPInRange(self, ip):
|
|
# Checks to see if supplied ip is in the range of allowed ips
|
|
maxo = self.max_ip.split('.')
|
|
mino = self.min_ip.split('.')
|
|
ipo = ip.split('.')
|
|
|
|
if int(ipo[0]) < int(mino[0]):
|
|
return False
|
|
elif int(ipo[0]) > int(maxo[0]):
|
|
return False
|
|
|
|
if int(ipo[1]) < int(mino[1]):
|
|
return False
|
|
elif int(ipo[1]) > int(maxo[1]):
|
|
return False
|
|
|
|
if int(ipo[2]) < int(mino[2]):
|
|
return False
|
|
elif int(ipo[2]) > int(maxo[2]):
|
|
return False
|
|
|
|
if int(ipo[3]) < int(mino[3]):
|
|
return False
|
|
elif int(ipo[3]) > int(maxo[3]):
|
|
return False
|
|
|
|
return True
|