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Connection marking for NAT
[nodemanager-topo.git]
/
topo.py
diff --git
a/topo.py
b/topo.py
index
f87a270
..
a9a9853
100755
(executable)
--- a/
topo.py
+++ b/
topo.py
@@
-31,6
+31,13
@@
def run(cmd):
return subprocess.call(cmd, shell=True);
return subprocess.call(cmd, shell=True);
+"""
+Subnet used for virtual interfaces by setup-egre-link script
+"""
+def iias_network():
+ return "192.168.0.0 255.255.0.0"
+
+
"""
Check for existence of interface d<key>x<nodeid>
"""
"""
Check for existence of interface d<key>x<nodeid>
"""
@@
-41,22
+48,14
@@
def virtual_link(key, nodeid):
else:
return False
else:
return False
-def get_virt_ip(myid, nodeid):
- if myid < nodeid:
- virtip = "10.%d.%d.2" % (myid, nodeid)
- else:
- virtip = "10.%d.%d.3" % (nodeid, myid)
- return virtip
-
"""
Create a "virtual link" for slice between here and nodeid.
The key is used to create the EGRE tunnel.
"""
"""
Create a "virtual link" for slice between here and nodeid.
The key is used to create the EGRE tunnel.
"""
-def setup_virtual_link(slice, key, rate, myid, nodeid, ipaddr):
+def setup_virtual_link(slice, key, rate, myid, nodeid, ipaddr
, virtip, vnet
):
logger.log("%s: Set up virtual link to node %d" % (slice, nodeid))
logger.log("%s: Set up virtual link to node %d" % (slice, nodeid))
- virtip = get_virt_ip(myid, nodeid)
- run(setup_link_cmd + " %s %s %s %s %s %s" % (slice, nodeid, ipaddr,
- key, rate, virtip))
+ run(setup_link_cmd + " %s %s %s %s %s %s %s" % (slice, nodeid, ipaddr,
+ key, rate, virtip, vnet))
return
return
@@
-79,6
+78,14
@@
def refresh_virtual_link(nodeid, key):
return
return
+"""
+IP address of the NAT interface created inside the slice by the
+setup-nat script.
+"""
+def nat_inner_ip(key):
+ return "10.0.%s.2" % key
+
+
"""
Check for existence of interface natx<key>
"""
"""
Check for existence of interface natx<key>
"""
@@
-151,16
+158,18
@@
Update virtual links for the slice
"""
def update_links(slice, myid, topospec, key, netns):
topolist = convert_topospec_to_list(topospec)
"""
def update_links(slice, myid, topospec, key, netns):
topolist = convert_topospec_to_list(topospec)
- for (nodeid,
ipaddr,rate
) in topolist:
+ for (nodeid,
ipaddr, rate, myvirtip, remvirtip, virtnet
) in topolist:
if not virtual_link(key, nodeid):
if netns:
if not virtual_link(key, nodeid):
if netns:
- setup_virtual_link(slice, key, rate, myid, nodeid, ipaddr)
+ setup_virtual_link(slice, key, rate, myid, nodeid,
+ ipaddr, myvirtip, virtnet)
else:
logger.log("%s: virtual link to node %s exists" % (slice, nodeid))
refresh_virtual_link(nodeid, key)
if not nat_exists(key):
else:
logger.log("%s: virtual link to node %s exists" % (slice, nodeid))
refresh_virtual_link(nodeid, key)
if not nat_exists(key):
- setup_nat(slice, myid, key)
+ if netns:
+ setup_nat(slice, myid, key)
else:
logger.log("%s: NAT exists" % slice)
refresh_nat(key)
else:
logger.log("%s: NAT exists" % slice)
refresh_nat(key)
@@
-195,11
+204,12
@@
Quagga.
def get_ifaces(hostname, myid, topospec, key):
ifaces = {}
topolist = convert_topospec_to_list(topospec)
def get_ifaces(hostname, myid, topospec, key):
ifaces = {}
topolist = convert_topospec_to_list(topospec)
- for (nodeid, ipaddr, rate) in topolist:
+ for (nodeid, ipaddr, rate
, myvirtip, remvirtip, virtnet
) in topolist:
name = "a%sx%s" % (key, nodeid)
ifaces[name] = {}
name = "a%sx%s" % (key, nodeid)
ifaces[name] = {}
- ifaces[name]['remote-ip'] = get_virt_ip(nodeid, myid)
- ifaces[name]['local-ip'] = get_virt_ip(myid, nodeid)
+ ifaces[name]['remote-ip'] = remvirtip
+ ifaces[name]['local-ip'] = myvirtip
+ ifaces[name]['network'] = virtnet
ifaces[name]['short-name'] = hostname.replace('.vini-veritas.net', '')
return ifaces
ifaces[name]['short-name'] = hostname.replace('.vini-veritas.net', '')
return ifaces
@@
-215,29
+225,39
@@
password %s
return
return
+"""
+IP address of NAT gateway to outside world
+"""
+def nat_gw(key):
+ return "10.0.%s.1" % key
+
+"""
+IP address of the NAT interface inside the slice
+"""
+def nat_inner(key):
+ return "10.0.%s.2" % key
+
+
"""
Write zebra.conf file for Quagga
"""
"""
Write zebra.conf file for Quagga
"""
-def write_zebra(filename, myname, ifaces):
+def write_zebra(filename, myname, ifaces
, myid, key
):
f = open(filename, 'w')
password = "zebra"
write_header(f, myname, password)
f = open(filename, 'w')
password = "zebra"
write_header(f, myname, password)
- f.write ("""enable password %s
-!
-""" % password)
+ f.write ("enable password %s\n" % password)
for name in ifaces:
f.write ("""!
for name in ifaces:
f.write ("""!
-
interface %s
-
link-detect
+interface %s
+link-detect
""" % name)
f.write ("""!
""" % name)
f.write ("""!
+access-list vty permit 127.0.0.1/32
!
!
- access-list vty permit 127.0.0.1/32
-!
- line vty
+line vty
!
""")
f.close()
!
""")
f.close()
@@
-270,10
+290,11
@@
def write_ospf(filename, myname, ifaces):
f.write (" neighbor %s\n" % ifaces[name]['remote-ip'])
for name in ifaces:
f.write (" neighbor %s\n" % ifaces[name]['remote-ip'])
for name in ifaces:
- net = ifaces[name]['
local-ip'].rstrip('23')+'0'
- f.write (" network %s
/24
area 0\n" % net)
+ net = ifaces[name]['
network']
+ f.write (" network %s area 0\n" % net)
- f.write("""!
+ f.write(""" redistribute kernel
+!
access-list vty permit 127.0.0.1/32
!
line vty
access-list vty permit 127.0.0.1/32
!
line vty
@@
-296,7
+317,8
@@
def update_quagga_configs(slicename, hostname, myid, topo, key, netns):
logger.log("topo: could not create %s\n" % quagga_dir)
return
logger.log("topo: could not create %s\n" % quagga_dir)
return
- write_zebra(quagga_dir + "zebra.conf.generated", hostname, ifaces)
+ write_zebra(quagga_dir + "zebra.conf.generated", hostname, ifaces,
+ myid, key)
write_ospf(quagga_dir + "ospfd.conf.generated", hostname, ifaces)
# Start up Quagga if we installed it earlier and netns = 1.
write_ospf(quagga_dir + "ospfd.conf.generated", hostname, ifaces)
# Start up Quagga if we installed it earlier and netns = 1.
@@
-316,6
+338,7
@@
def update_hosts(slicename, hosts):
def start(options, config):
def start(options, config):
+ run ("echo 1 > /proc/sys/net/ipv4/ip_forward")
pass
pass