merged cleanup branch with master
This commit is contained in:
Rod A Santiago
parent
a4f47a17e3
commit
0a91fe7a3e
28 changed files with 9033 additions and 0 deletions
741
daemon/core/netns/openvswitch.py
Normal file
741
daemon/core/netns/openvswitch.py
Normal file
|
|
@ -0,0 +1,741 @@
|
|||
"""
|
||||
TODO: probably goes away, or implement the usage of "unshare", or docker formal.
|
||||
"""
|
||||
|
||||
import socket
|
||||
import subprocess
|
||||
import threading
|
||||
from socket import AF_INET
|
||||
from socket import AF_INET6
|
||||
|
||||
from core import constants
|
||||
from core.coreobj import PyCoreNet
|
||||
from core.data import LinkData
|
||||
from core.enumerations import LinkTypes
|
||||
from core.enumerations import NodeTypes
|
||||
from core.enumerations import RegisterTlvs
|
||||
from core.misc import ipaddress
|
||||
from core.misc import log
|
||||
from core.misc import utils
|
||||
from core.netns.vif import GreTap
|
||||
from core.netns.vif import VEth
|
||||
from core.netns.vnet import EbtablesQueue
|
||||
from core.netns.vnet import GreTapBridge
|
||||
|
||||
logger = log.get_logger(__name__)
|
||||
|
||||
# a global object because all WLANs share the same queue
|
||||
# cannot have multiple threads invoking the ebtables commnd
|
||||
ebtables_queue = EbtablesQueue()
|
||||
|
||||
ebtables_lock = threading.Lock()
|
||||
|
||||
utils.check_executables([
|
||||
constants.IP_BIN,
|
||||
constants.EBTABLES_BIN,
|
||||
constants.TC_BIN
|
||||
])
|
||||
|
||||
|
||||
def ebtables_commands(call, commands):
|
||||
ebtables_lock.acquire()
|
||||
try:
|
||||
for command in commands:
|
||||
call(command)
|
||||
finally:
|
||||
ebtables_lock.release()
|
||||
|
||||
|
||||
class OvsNet(PyCoreNet):
|
||||
"""
|
||||
Used to be LxBrNet.
|
||||
|
||||
Base class for providing Openvswitch functionality to objects that create bridges.
|
||||
"""
|
||||
|
||||
policy = "DROP"
|
||||
|
||||
def __init__(self, session, objid=None, name=None, start=True, policy=None):
|
||||
"""
|
||||
Creates an OvsNet instance.
|
||||
|
||||
:param core.session.Session session: session this object is a part of
|
||||
:param objid:
|
||||
:param name:
|
||||
:param start:
|
||||
:param policy:
|
||||
:return:
|
||||
"""
|
||||
|
||||
PyCoreNet.__init__(self, session, objid, name, start)
|
||||
|
||||
if policy:
|
||||
self.policy = policy
|
||||
else:
|
||||
self.policy = self.__class__.policy
|
||||
|
||||
session_id = self.session.short_session_id()
|
||||
self.bridge_name = "b.%s.%s" % (str(self.objid), session_id)
|
||||
self.up = False
|
||||
|
||||
if start:
|
||||
self.startup()
|
||||
ebtables_queue.startupdateloop(self)
|
||||
|
||||
def startup(self):
|
||||
try:
|
||||
subprocess.check_call([constants.OVS_BIN, "add-br", self.bridge_name])
|
||||
except subprocess.CalledProcessError:
|
||||
logger.exception("error adding bridge")
|
||||
|
||||
try:
|
||||
# turn off spanning tree protocol and forwarding delay
|
||||
# TODO: appears stp and rstp are off by default, make sure this always holds true
|
||||
# TODO: apears ovs only supports rstp forward delay and again it's off by default
|
||||
subprocess.check_call([constants.IP_BIN, "link", "set", self.bridge_name, "up"])
|
||||
|
||||
# create a new ebtables chain for this bridge
|
||||
ebtables_commands(subprocess.check_call, [
|
||||
[constants.EBTABLES_BIN, "-N", self.bridge_name, "-P", self.policy],
|
||||
[constants.EBTABLES_BIN, "-A", "FORWARD", "--logical-in", self.bridge_name, "-j", self.bridge_name]
|
||||
])
|
||||
except subprocess.CalledProcessError:
|
||||
logger.exception("Error setting bridge parameters")
|
||||
|
||||
self.up = True
|
||||
|
||||
def shutdown(self):
|
||||
if not self.up:
|
||||
logger.info("exiting shutdown, object is not up")
|
||||
return
|
||||
|
||||
ebtables_queue.stopupdateloop(self)
|
||||
|
||||
utils.mutecall([constants.IP_BIN, "link", "set", self.bridge_name, "down"])
|
||||
utils.mutecall([constants.OVS_BIN, "del-br", self.bridge_name])
|
||||
|
||||
ebtables_commands(utils.mutecall, [
|
||||
[constants.EBTABLES_BIN, "-D", "FORWARD", "--logical-in", self.bridge_name, "-j", self.bridge_name],
|
||||
[constants.EBTABLES_BIN, "-X", self.bridge_name]
|
||||
])
|
||||
|
||||
for interface in self.netifs():
|
||||
# removes veth pairs used for bridge-to-bridge connections
|
||||
interface.shutdown()
|
||||
|
||||
self._netif.clear()
|
||||
self._linked.clear()
|
||||
del self.session
|
||||
self.up = False
|
||||
|
||||
def attach(self, interface):
|
||||
if self.up:
|
||||
try:
|
||||
subprocess.check_call([constants.OVS_BIN, "add-port", self.bridge_name, interface.localname])
|
||||
subprocess.check_call([constants.IP_BIN, "link", "set", interface.localname, "up"])
|
||||
except subprocess.CalledProcessError:
|
||||
logger.exception("error joining interface %s to bridge %s", interface.localname, self.bridge_name)
|
||||
return
|
||||
|
||||
PyCoreNet.attach(self, interface)
|
||||
|
||||
def detach(self, interface):
|
||||
if self.up:
|
||||
try:
|
||||
subprocess.check_call([constants.OVS_BIN, "del-port", self.bridge_name, interface.localname])
|
||||
except subprocess.CalledProcessError:
|
||||
logger.exception("error removing interface %s from bridge %s", interface.localname, self.bridge_name)
|
||||
return
|
||||
|
||||
PyCoreNet.detach(self, interface)
|
||||
|
||||
def linked(self, interface_one, interface_two):
|
||||
# check if the network interfaces are attached to this network
|
||||
if self._netif[interface_one.netifi] != interface_one:
|
||||
raise ValueError("inconsistency for interface %s" % interface_one.name)
|
||||
|
||||
if self._netif[interface_two.netifi] != interface_two:
|
||||
raise ValueError("inconsistency for interface %s" % interface_two.name)
|
||||
|
||||
try:
|
||||
linked = self._linked[interface_one][interface_two]
|
||||
except KeyError:
|
||||
if self.policy == "ACCEPT":
|
||||
linked = True
|
||||
elif self.policy == "DROP":
|
||||
linked = False
|
||||
else:
|
||||
raise ValueError("unknown policy: %s" % self.policy)
|
||||
|
||||
self._linked[interface_one][interface_two] = linked
|
||||
|
||||
return linked
|
||||
|
||||
def unlink(self, interface_one, interface_two):
|
||||
"""
|
||||
Unlink two PyCoreNetIfs, resulting in adding or removing ebtables
|
||||
filtering rules.
|
||||
"""
|
||||
with self._linked_lock:
|
||||
if not self.linked(interface_one, interface_two):
|
||||
return
|
||||
|
||||
self._linked[interface_one][interface_two] = False
|
||||
|
||||
ebtables_queue.ebchange(self)
|
||||
|
||||
def link(self, interface_one, interface_two):
|
||||
"""
|
||||
Link two PyCoreNetIfs together, resulting in adding or removing
|
||||
ebtables filtering rules.
|
||||
"""
|
||||
with self._linked_lock:
|
||||
if self.linked(interface_one, interface_two):
|
||||
return
|
||||
|
||||
self._linked[interface_one][interface_two] = True
|
||||
|
||||
ebtables_queue.ebchange(self)
|
||||
|
||||
def linkconfig(self, interface, bw=None, delay=None, loss=None, duplicate=None,
|
||||
jitter=None, netif2=None, devname=None):
|
||||
"""
|
||||
Configure link parameters by applying tc queuing disciplines on the
|
||||
interface.
|
||||
"""
|
||||
if not devname:
|
||||
devname = interface.localname
|
||||
|
||||
tc = [constants.TC_BIN, "qdisc", "replace", "dev", devname]
|
||||
parent = ["root"]
|
||||
|
||||
# attempt to set bandwidth and update as needed if value changed
|
||||
bandwidth_changed = interface.setparam("bw", bw)
|
||||
if bandwidth_changed:
|
||||
# from tc-tbf(8): minimum value for burst is rate / kernel_hz
|
||||
if bw > 0:
|
||||
if self.up:
|
||||
burst = max(2 * interface.mtu, bw / 1000)
|
||||
limit = 0xffff # max IP payload
|
||||
tbf = ["tbf", "rate", str(bw), "burst", str(burst), "limit", str(limit)]
|
||||
logger.info("linkconfig: %s" % [tc + parent + ["handle", "1:"] + tbf])
|
||||
subprocess.check_call(tc + parent + ["handle", "1:"] + tbf)
|
||||
interface.setparam("has_tbf", True)
|
||||
elif interface.getparam("has_tbf") and bw <= 0:
|
||||
tcd = [] + tc
|
||||
tcd[2] = "delete"
|
||||
|
||||
if self.up:
|
||||
subprocess.check_call(tcd + parent)
|
||||
|
||||
interface.setparam("has_tbf", False)
|
||||
# removing the parent removes the child
|
||||
interface.setparam("has_netem", False)
|
||||
|
||||
if interface.getparam("has_tbf"):
|
||||
parent = ["parent", "1:1"]
|
||||
|
||||
netem = ["netem"]
|
||||
delay_changed = interface.setparam("delay", delay)
|
||||
|
||||
if loss is not None:
|
||||
loss = float(loss)
|
||||
loss_changed = interface.setparam("loss", loss)
|
||||
|
||||
if duplicate is not None:
|
||||
duplicate = float(duplicate)
|
||||
duplicate_changed = interface.setparam("duplicate", duplicate)
|
||||
jitter_changed = interface.setparam("jitter", jitter)
|
||||
|
||||
# if nothing changed return
|
||||
if not any([bandwidth_changed, delay_changed, loss_changed, duplicate_changed, jitter_changed]):
|
||||
return
|
||||
|
||||
# jitter and delay use the same delay statement
|
||||
if delay is not None:
|
||||
netem += ["delay", "%sus" % delay]
|
||||
else:
|
||||
netem += ["delay", "0us"]
|
||||
|
||||
if jitter is not None:
|
||||
netem += ["%sus" % jitter, "25%"]
|
||||
|
||||
if loss is not None:
|
||||
netem += ["loss", "%s%%" % min(loss, 100)]
|
||||
|
||||
if duplicate is not None:
|
||||
netem += ["duplicate", "%s%%" % min(duplicate, 100)]
|
||||
|
||||
if delay <= 0 and jitter <= 0 and loss <= 0 and duplicate <= 0:
|
||||
# possibly remove netem if it exists and parent queue wasn"t removed
|
||||
if not interface.getparam("has_netem"):
|
||||
return
|
||||
|
||||
tc[2] = "delete"
|
||||
|
||||
if self.up:
|
||||
logger.info("linkconfig: %s" % ([tc + parent + ["handle", "10:"]],))
|
||||
subprocess.check_call(tc + parent + ["handle", "10:"])
|
||||
interface.setparam("has_netem", False)
|
||||
elif len(netem) > 1:
|
||||
if self.up:
|
||||
logger.info("linkconfig: %s" % ([tc + parent + ["handle", "10:"] + netem],))
|
||||
subprocess.check_call(tc + parent + ["handle", "10:"] + netem)
|
||||
interface.setparam("has_netem", True)
|
||||
|
||||
def linknet(self, network):
|
||||
"""
|
||||
Link this bridge with another by creating a veth pair and installing
|
||||
each device into each bridge.
|
||||
"""
|
||||
session_id = self.session.short_session_id()
|
||||
|
||||
try:
|
||||
self_objid = "%x" % self.objid
|
||||
except TypeError:
|
||||
self_objid = "%s" % self.objid
|
||||
|
||||
try:
|
||||
net_objid = "%x" % network.objid
|
||||
except TypeError:
|
||||
net_objid = "%s" % network.objid
|
||||
|
||||
localname = "veth%s.%s.%s" % (self_objid, net_objid, session_id)
|
||||
|
||||
if len(localname) >= 16:
|
||||
raise ValueError("interface local name %s too long" % localname)
|
||||
|
||||
name = "veth%s.%s.%s" % (net_objid, self_objid, session_id)
|
||||
if len(name) >= 16:
|
||||
raise ValueError("interface name %s too long" % name)
|
||||
|
||||
interface = VEth(node=None, name=name, localname=localname, mtu=1500, net=self, start=self.up)
|
||||
self.attach(interface)
|
||||
if network.up:
|
||||
# this is similar to net.attach() but uses netif.name instead
|
||||
# of localname
|
||||
subprocess.check_call([constants.OVS_BIN, "add-port", network.brname, interface.name])
|
||||
subprocess.check_call([constants.IP_BIN, "link", "set", interface.name, "up"])
|
||||
|
||||
# TODO: is there a native method for this? see if this causes issues
|
||||
# i = network.newifindex()
|
||||
# network._netif[i] = interface
|
||||
# with network._linked_lock:
|
||||
# network._linked[interface] = {}
|
||||
# this method call is equal to the above, with a interface.netifi = call
|
||||
network.attach(interface)
|
||||
|
||||
interface.net = self
|
||||
interface.othernet = network
|
||||
return interface
|
||||
|
||||
def getlinknetif(self, network):
|
||||
"""
|
||||
Return the interface of that links this net with another net
|
||||
(that were linked using linknet()).
|
||||
"""
|
||||
for interface in self.netifs():
|
||||
if hasattr(interface, "othernet") and interface.othernet == network:
|
||||
return interface
|
||||
|
||||
return None
|
||||
|
||||
def addrconfig(self, addresses):
|
||||
"""
|
||||
Set addresses on the bridge.
|
||||
"""
|
||||
if not self.up:
|
||||
return
|
||||
|
||||
for address in addresses:
|
||||
try:
|
||||
subprocess.check_call([constants.IP_BIN, "addr", "add", str(address), "dev", self.bridge_name])
|
||||
except subprocess.CalledProcessError:
|
||||
logger.exception("error adding IP address")
|
||||
|
||||
|
||||
class OvsCtrlNet(OvsNet):
|
||||
policy = "ACCEPT"
|
||||
CTRLIF_IDX_BASE = 99 # base control interface index
|
||||
DEFAULT_PREFIX_LIST = [
|
||||
"172.16.0.0/24 172.16.1.0/24 172.16.2.0/24 172.16.3.0/24 172.16.4.0/24",
|
||||
"172.17.0.0/24 172.17.1.0/24 172.17.2.0/24 172.17.3.0/24 172.17.4.0/24",
|
||||
"172.18.0.0/24 172.18.1.0/24 172.18.2.0/24 172.18.3.0/24 172.18.4.0/24",
|
||||
"172.19.0.0/24 172.19.1.0/24 172.19.2.0/24 172.19.3.0/24 172.19.4.0/24"
|
||||
]
|
||||
|
||||
def __init__(self, session, objid="ctrlnet", name=None, prefix=None, hostid=None,
|
||||
start=True, assign_address=True, updown_script=None, serverintf=None):
|
||||
OvsNet.__init__(self, session, objid=objid, name=name, start=start)
|
||||
self.prefix = ipaddress.Ipv4Prefix(prefix)
|
||||
self.hostid = hostid
|
||||
self.assign_address = assign_address
|
||||
self.updown_script = updown_script
|
||||
self.serverintf = serverintf
|
||||
|
||||
def startup(self):
|
||||
if self.detectoldbridge():
|
||||
return
|
||||
|
||||
OvsNet.startup(self)
|
||||
if self.hostid:
|
||||
addr = self.prefix.addr(self.hostid)
|
||||
else:
|
||||
addr = self.prefix.max_addr()
|
||||
|
||||
message = "Added control network bridge: %s %s" % (self.bridge_name, self.prefix)
|
||||
addresses = ["%s/%s" % (addr, self.prefix.prefixlen)]
|
||||
if self.assign_address:
|
||||
self.addrconfig(addresses=addresses)
|
||||
message += " address %s" % addr
|
||||
logger.info(message)
|
||||
|
||||
if self.updown_script:
|
||||
logger.info("interface %s updown script %s startup called" % (self.bridge_name, self.updown_script))
|
||||
subprocess.check_call([self.updown_script, self.bridge_name, "startup"])
|
||||
|
||||
if self.serverintf:
|
||||
try:
|
||||
subprocess.check_call([constants.OVS_BIN, "add-port", self.bridge_name, self.serverintf])
|
||||
subprocess.check_call([constants.IP_BIN, "link", "set", self.serverintf, "up"])
|
||||
except subprocess.CalledProcessError:
|
||||
logger.exception("error joining server interface %s to controlnet bridge %s",
|
||||
self.serverintf, self.bridge_name)
|
||||
|
||||
def detectoldbridge(self):
|
||||
"""
|
||||
Occassionally, control net bridges from previously closed sessions are not cleaned up.
|
||||
Check if there are old control net bridges and delete them
|
||||
"""
|
||||
|
||||
status, output = utils.cmdresult([constants.OVS_BIN, "list-br"])
|
||||
output = output.strip()
|
||||
if output:
|
||||
for line in output.split("\n"):
|
||||
bride_name = line.split(".")
|
||||
if bride_name[0] == "b" and bride_name[1] == self.objid:
|
||||
logger.error("older session may still be running with conflicting id for bridge: %s", line)
|
||||
return True
|
||||
|
||||
return False
|
||||
|
||||
def shutdown(self):
|
||||
if self.serverintf:
|
||||
try:
|
||||
subprocess.check_call([constants.OVS_BIN, "del-port", self.bridge_name, self.serverintf])
|
||||
except subprocess.CalledProcessError:
|
||||
logger.exception("Error deleting server interface %s to controlnet bridge %s",
|
||||
self.serverintf, self.bridge_name)
|
||||
|
||||
if self.updown_script:
|
||||
logger.info("interface %s updown script '%s shutdown' called", self.bridge_name, self.updown_script)
|
||||
subprocess.check_call([self.updown_script, self.bridge_name, "shutdown"])
|
||||
|
||||
OvsNet.shutdown(self)
|
||||
|
||||
def all_link_data(self, flags):
|
||||
"""
|
||||
Do not include CtrlNet in link messages describing this session.
|
||||
"""
|
||||
return []
|
||||
|
||||
|
||||
class OvsPtpNet(OvsNet):
|
||||
policy = "ACCEPT"
|
||||
|
||||
def attach(self, interface):
|
||||
if len(self._netif) >= 2:
|
||||
raise ValueError("point-to-point links support at most 2 network interfaces")
|
||||
OvsNet.attach(self, interface)
|
||||
|
||||
def data(self, message_type):
|
||||
"""
|
||||
Do not generate a Node Message for point-to-point links. They are
|
||||
built using a link message instead.
|
||||
"""
|
||||
pass
|
||||
|
||||
def all_link_data(self, flags):
|
||||
"""
|
||||
Build CORE API TLVs for a point-to-point link. One Link message describes this network.
|
||||
"""
|
||||
|
||||
all_links = []
|
||||
|
||||
if len(self._netif) != 2:
|
||||
return all_links
|
||||
|
||||
if1, if2 = self._netif.items()
|
||||
if1 = if1[1]
|
||||
if2 = if2[1]
|
||||
|
||||
unidirectional = 0
|
||||
if if1.getparams() != if2.getparams():
|
||||
unidirectional = 1
|
||||
|
||||
interface1_ip4 = None
|
||||
interface1_ip4_mask = None
|
||||
interface1_ip6 = None
|
||||
interface1_ip6_mask = None
|
||||
for address in if1.addrlist:
|
||||
ip, sep, mask = address.partition('/')
|
||||
mask = int(mask)
|
||||
if ipaddress.is_ipv4_address(ip):
|
||||
family = AF_INET
|
||||
ipl = socket.inet_pton(family, ip)
|
||||
interface1_ip4 = ipaddress.IpAddress(af=family, address=ipl)
|
||||
interface1_ip4_mask = mask
|
||||
else:
|
||||
family = AF_INET6
|
||||
ipl = socket.inet_pton(family, ip)
|
||||
interface1_ip6 = ipaddress.IpAddress(af=family, address=ipl)
|
||||
interface1_ip6_mask = mask
|
||||
|
||||
interface2_ip4 = None
|
||||
interface2_ip4_mask = None
|
||||
interface2_ip6 = None
|
||||
interface2_ip6_mask = None
|
||||
for address in if2.addrlist:
|
||||
ip, sep, mask = address.partition('/')
|
||||
mask = int(mask)
|
||||
if ipaddress.is_ipv4_address(ip):
|
||||
family = AF_INET
|
||||
ipl = socket.inet_pton(family, ip)
|
||||
interface2_ip4 = ipaddress.IpAddress(af=family, address=ipl)
|
||||
interface2_ip4_mask = mask
|
||||
else:
|
||||
family = AF_INET6
|
||||
ipl = socket.inet_pton(family, ip)
|
||||
interface2_ip6 = ipaddress.IpAddress(af=family, address=ipl)
|
||||
interface2_ip6_mask = mask
|
||||
|
||||
# TODO: not currently used
|
||||
# loss=netif.getparam('loss')
|
||||
link_data = LinkData(
|
||||
message_type=flags,
|
||||
node1_id=if1.node.objid,
|
||||
node2_id=if2.node.objid,
|
||||
link_type=self.linktype,
|
||||
unidirectional=unidirectional,
|
||||
delay=if1.getparam("delay"),
|
||||
bandwidth=if1.getparam("bw"),
|
||||
dup=if1.getparam("duplicate"),
|
||||
jitter=if1.getparam("jitter"),
|
||||
interface1_id=if1.node.getifindex(if1),
|
||||
interface1_mac=if1.hwaddr,
|
||||
interface1_ip4=interface1_ip4,
|
||||
interface1_ip4_mask=interface1_ip4_mask,
|
||||
interface1_ip6=interface1_ip6,
|
||||
interface1_ip6_mask=interface1_ip6_mask,
|
||||
interface2_id=if2.node.getifindex(if2),
|
||||
interface2_mac=if2.hwaddr,
|
||||
interface2_ip4=interface2_ip4,
|
||||
interface2_ip4_mask=interface2_ip4_mask,
|
||||
interface2_ip6=interface2_ip6,
|
||||
interface2_ip6_mask=interface2_ip6_mask,
|
||||
)
|
||||
|
||||
all_links.append(link_data)
|
||||
|
||||
# build a 2nd link message for the upstream link parameters
|
||||
# (swap if1 and if2)
|
||||
if unidirectional:
|
||||
link_data = LinkData(
|
||||
message_type=0,
|
||||
node1_id=if2.node.objid,
|
||||
node2_id=if1.node.objid,
|
||||
delay=if1.getparam("delay"),
|
||||
bandwidth=if1.getparam("bw"),
|
||||
dup=if1.getparam("duplicate"),
|
||||
jitter=if1.getparam("jitter"),
|
||||
unidirectional=1,
|
||||
interface1_id=if2.node.getifindex(if2),
|
||||
interface2_id=if1.node.getifindex(if1)
|
||||
)
|
||||
all_links.append(link_data)
|
||||
|
||||
return all_links
|
||||
|
||||
|
||||
class OvsSwitchNode(OvsNet):
|
||||
apitype = NodeTypes.SWITCH.value
|
||||
policy = "ACCEPT"
|
||||
type = "lanswitch"
|
||||
|
||||
|
||||
class OvsHubNode(OvsNet):
|
||||
apitype = NodeTypes.HUB.value
|
||||
policy = "ACCEPT"
|
||||
type = "hub"
|
||||
|
||||
def __init__(self, session, objid=None, name=None, start=True):
|
||||
"""
|
||||
the Hub node forwards packets to all bridge ports by turning off
|
||||
the MAC address learning
|
||||
"""
|
||||
OvsNet.__init__(self, session, objid, name, start)
|
||||
|
||||
if start:
|
||||
# TODO: verify that the below flow accomplishes what is desired for a "HUB"
|
||||
# TODO: replace "brctl setageing 0"
|
||||
subprocess.check_call([constants.OVS_FLOW_BIN, "add-flow", self.bridge_name, "action=flood"])
|
||||
|
||||
|
||||
class OvsWlanNode(OvsNet):
|
||||
apitype = NodeTypes.WIRELESS_LAN.value
|
||||
linktype = LinkTypes.WIRELESS.value
|
||||
policy = "DROP"
|
||||
type = "wlan"
|
||||
|
||||
def __init__(self, session, objid=None, name=None, start=True, policy=None):
|
||||
OvsNet.__init__(self, session, objid, name, start, policy)
|
||||
|
||||
# wireless model such as basic range
|
||||
self.model = None
|
||||
# mobility model such as scripted
|
||||
self.mobility = None
|
||||
|
||||
def attach(self, interface):
|
||||
OvsNet.attach(self, interface)
|
||||
|
||||
if self.model:
|
||||
interface.poshook = self.model.position_callback
|
||||
|
||||
if interface.node is None:
|
||||
return
|
||||
|
||||
x, y, z = interface.node.position.get()
|
||||
# invokes any netif.poshook
|
||||
interface.setposition(x, y, z)
|
||||
# self.model.setlinkparams()
|
||||
|
||||
def setmodel(self, model, config):
|
||||
"""
|
||||
Mobility and wireless model.
|
||||
"""
|
||||
logger.info("adding model %s", model.name)
|
||||
|
||||
if model.type == RegisterTlvs.WIRELESS.value:
|
||||
self.model = model(session=self.session, object_id=self.objid, values=config)
|
||||
if self.model.position_callback:
|
||||
for interface in self.netifs():
|
||||
interface.poshook = self.model.position_callback
|
||||
if interface.node is not None:
|
||||
x, y, z = interface.node.position.get()
|
||||
interface.poshook(interface, x, y, z)
|
||||
self.model.setlinkparams()
|
||||
elif model.type == RegisterTlvs.MOBILITY.value:
|
||||
self.mobility = model(session=self.session, object_id=self.objid, values=config)
|
||||
|
||||
def updatemodel(self, model_name, values):
|
||||
"""
|
||||
Allow for model updates during runtime (similar to setmodel().)
|
||||
"""
|
||||
logger.info("updating model %s", model_name)
|
||||
if self.model is None or self.model.name != model_name:
|
||||
logger.info(
|
||||
"failure to update model, model doesn't exist or invalid name: model(%s) - name(%s)",
|
||||
self.model, model_name
|
||||
)
|
||||
return
|
||||
|
||||
model = self.model
|
||||
if model.type == RegisterTlvs.WIRELESS.value:
|
||||
if not model.updateconfig(values):
|
||||
return
|
||||
if self.model.position_callback:
|
||||
for interface in self.netifs():
|
||||
interface.poshook = self.model.position_callback
|
||||
if interface.node is not None:
|
||||
x, y, z = interface.node.position.get()
|
||||
interface.poshook(interface, x, y, z)
|
||||
self.model.setlinkparams()
|
||||
|
||||
def all_link_data(self, flags):
|
||||
all_links = OvsNet.all_link_data(self, flags)
|
||||
|
||||
if self.model:
|
||||
all_links.extend(self.model.all_link_data(flags))
|
||||
|
||||
return all_links
|
||||
|
||||
|
||||
class OvsTunnelNode(GreTapBridge):
|
||||
apitype = NodeTypes.TUNNEL.value
|
||||
policy = "ACCEPT"
|
||||
type = "tunnel"
|
||||
|
||||
|
||||
class OvsGreTapBridge(OvsNet):
|
||||
"""
|
||||
A network consisting of a bridge with a gretap device for tunneling to
|
||||
another system.
|
||||
"""
|
||||
|
||||
def __init__(self, session, remoteip=None, objid=None, name=None, policy="ACCEPT",
|
||||
localip=None, ttl=255, key=None, start=True):
|
||||
OvsNet.__init__(self, session=session, objid=objid, name=name, policy=policy, start=False)
|
||||
self.grekey = key
|
||||
if self.grekey is None:
|
||||
self.grekey = self.session.session_id ^ self.objid
|
||||
|
||||
self.localnum = None
|
||||
self.remotenum = None
|
||||
self.remoteip = remoteip
|
||||
self.localip = localip
|
||||
self.ttl = ttl
|
||||
|
||||
if remoteip is None:
|
||||
self.gretap = None
|
||||
else:
|
||||
self.gretap = GreTap(node=self, name=None, session=session, remoteip=remoteip,
|
||||
objid=None, localip=localip, ttl=ttl, key=self.grekey)
|
||||
if start:
|
||||
self.startup()
|
||||
|
||||
def startup(self):
|
||||
"""
|
||||
Creates a bridge and adds the gretap device to it.
|
||||
"""
|
||||
OvsNet.startup(self)
|
||||
|
||||
if self.gretap:
|
||||
self.attach(self.gretap)
|
||||
|
||||
def shutdown(self):
|
||||
"""
|
||||
Detach the gretap device and remove the bridge.
|
||||
"""
|
||||
if self.gretap:
|
||||
self.detach(self.gretap)
|
||||
self.gretap.shutdown()
|
||||
self.gretap = None
|
||||
|
||||
OvsNet.shutdown(self)
|
||||
|
||||
def addrconfig(self, addresses):
|
||||
"""
|
||||
Set the remote tunnel endpoint. This is a one-time method for
|
||||
creating the GreTap device, which requires the remoteip at startup.
|
||||
The 1st address in the provided list is remoteip, 2nd optionally
|
||||
specifies localip.
|
||||
"""
|
||||
if self.gretap:
|
||||
raise ValueError("gretap already exists for %s" % self.name)
|
||||
|
||||
remoteip = addresses[0].split('/')[0]
|
||||
localip = None
|
||||
|
||||
if len(addresses) > 1:
|
||||
localip = addresses[1].split('/')[0]
|
||||
|
||||
self.gretap = GreTap(session=self.session, remoteip=remoteip, objid=None, name=None,
|
||||
localip=localip, ttl=self.ttl, key=self.grekey)
|
||||
self.attach(self.gretap)
|
||||
|
||||
def setkey(self, key):
|
||||
"""
|
||||
Set the GRE key used for the GreTap device. This needs to be set
|
||||
prior to instantiating the GreTap device (before addrconfig).
|
||||
"""
|
||||
self.grekey = key
|
||||
Loading…
Add table
Add a link
Reference in a new issue