def __init__(
self,
session: "Session",
remoteip: str = None,
_id: int = None,
name: str = None,
policy: str = "ACCEPT",
localip: str = None,
ttl: int = 255,
key: int = None,
start: bool = True,
server: "DistributedServer" = None,
) -> None:
"""
Create a GreTapBridge instance.
:param session: core session instance
:param remoteip: remote address
:param _id: object id
:param name: object name
:param policy: network policy
:param localip: local address
:param ttl: ttl value
:param key: gre tap key
:param start: start flag
:param server: remote server node
will run on, default is None for localhost
"""
CoreNetwork.__init__(self, session, _id, name, False, server, policy)
self.grekey = key
if self.grekey is None:
self.grekey = self.session.id ^ self.id
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,
session=session,
remoteip=remoteip,
localip=localip,
ttl=ttl,
key=self.grekey,
)
if start:
self.startup()
def create_gre_tunnel(self, node: CoreNetwork,
server: DistributedServer) -> Tuple[GreTap, GreTap]:
"""
Create gre tunnel using a pair of gre taps between the local and remote server.
:param node: node to create gre tunnel for
:param server: server to create
tunnel for
:return: local and remote gre taps created for tunnel
"""
host = server.host
key = self.tunnel_key(node.id, netaddr.IPAddress(host).value)
tunnel = self.tunnels.get(key)
if tunnel is not None:
return tunnel
# local to server
logging.info("local tunnel node(%s) to remote(%s) key(%s)", node.name,
host, key)
local_tap = GreTap(session=self.session, remoteip=host, key=key)
local_tap.net_client.create_interface(node.brname, local_tap.localname)
# server to local
logging.info("remote tunnel node(%s) to local(%s) key(%s)", node.name,
self.address, key)
remote_tap = GreTap(session=self.session,
remoteip=self.address,
key=key,
server=server)
remote_tap.net_client.create_interface(node.brname,
remote_tap.localname)
# save tunnels for shutdown
tunnel = (local_tap, remote_tap)
self.tunnels[key] = tunnel
return tunnel
def create_gre_tunnel(self, node, server):
"""
Create gre tunnel using a pair of gre taps between the local and remote server.
:param core.nodes.network.CoreNetwork node: node to create gre tunnel for
:param core.emulator.distributed.DistributedServer server: server to create
tunnel for
:return: local and remote gre taps created for tunnel
:rtype: tuple
"""
host = server.host
key = self.tunnel_key(node.id, IpAddress.to_int(host))
tunnel = self.tunnels.get(key)
if tunnel is not None:
return tunnel
# local to server
logging.info("local tunnel node(%s) to remote(%s) key(%s)", node.name,
host, key)
local_tap = GreTap(session=self.session, remoteip=host, key=key)
local_tap.net_client.create_interface(node.brname, local_tap.localname)
# server to local
logging.info("remote tunnel node(%s) to local(%s) key(%s)", node.name,
self.address, key)
remote_tap = GreTap(session=self.session,
remoteip=self.address,
key=key,
server=server)
remote_tap.net_client.create_interface(node.brname,
remote_tap.localname)
# save tunnels for shutdown
tunnel = (local_tap, remote_tap)
self.tunnels[key] = tunnel
return tunnel
def __init__(self,
session,
remoteip=None,
_id=None,
name=None,
policy="ACCEPT",
localip=None,
ttl=255,
key=None,
start=True):
"""
Create a GreTapBridge instance.
:param core.emulator.session.Session session: core session instance
:param str remoteip: remote address
:param int _id: object id
:param str name: object name
:param policy: network policy
:param str localip: local address
:param ttl: ttl value
:param key: gre tap key
:param bool start: start flag
"""
CoreNetwork.__init__(self,
session=session,
_id=_id,
name=name,
policy=policy,
start=False)
self.grekey = key
if self.grekey is None:
self.grekey = self.session.id ^ self.id
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,
session=session,
remoteip=remoteip,
localip=localip,
ttl=ttl,
key=self.grekey)
if start:
self.startup()
def __init__(
self,
session: "Session",
remoteip: str = None,
_id: int = None,
name: str = None,
policy: NetworkPolicy = NetworkPolicy.ACCEPT,
localip: str = None,
ttl: int = 255,
key: int = None,
server: "DistributedServer" = None,
) -> None:
"""
Create a GreTapBridge instance.
:param session: core session instance
:param remoteip: remote address
:param _id: object id
:param name: object name
:param policy: network policy
:param localip: local address
:param ttl: ttl value
:param key: gre tap key
:param server: remote server node
will run on, default is None for localhost
"""
CoreNetwork.__init__(self, session, _id, name, server, policy)
if key is None:
key = self.session.id ^ self.id
self.grekey: int = key
self.localnum: Optional[int] = None
self.remotenum: Optional[int] = None
self.remoteip: Optional[str] = remoteip
self.localip: Optional[str] = localip
self.ttl: int = ttl
self.gretap: Optional[GreTap] = None
if self.remoteip is not None:
self.gretap = GreTap(
session,
remoteip,
key=self.grekey,
node=self,
localip=localip,
ttl=ttl,
mtu=self.mtu,
)
def addtunnel(self, remoteip, n1num, n2num, localnum):
"""
Adds a new GreTapBridge between nodes on two different machines.
:param str remoteip: remote address for tunnel
:param int n1num: node one id
:param int n2num: node two id
:param int localnum: local id
:return: nothing
"""
key = self.tunnelkey(n1num, n2num)
if localnum == n2num:
remotenum = n1num
else:
remotenum = n2num
if key in self.tunnels.keys():
logging.warning(
"tunnel with key %s (%s-%s) already exists!", key, n1num, n2num
)
else:
_id = key & ((1 << 16) - 1)
logging.info(
"adding tunnel for %s-%s to %s with key %s", n1num, n2num, remoteip, key
)
if localnum in self.physical_nodes:
# no bridge is needed on physical nodes; use the GreTap directly
gt = GreTap(
node=None,
name=None,
session=self.session,
remoteip=remoteip,
key=key,
)
else:
gt = self.session.create_node(
cls=GreTapBridge,
_id=_id,
policy="ACCEPT",
remoteip=remoteip,
key=key,
)
gt.localnum = localnum
gt.remotenum = remotenum
self.tunnels[key] = gt
def addrconfig(self, addrlist):
"""
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.
:param list addrlist: address list
:return: nothing
"""
if self.gretap:
raise ValueError("gretap already exists for %s" % self.name)
remoteip = addrlist[0].split("/")[0]
localip = None
if len(addrlist) > 1:
localip = addrlist[1].split("/")[0]
self.gretap = GreTap(session=self.session, remoteip=remoteip,
localip=localip, ttl=self.ttl, key=self.grekey)
self.attach(self.gretap)
def __init__(
self,
session,
remoteip=None,
_id=None,
name=None,
policy="ACCEPT",
localip=None,
ttl=255,
key=None,
start=True,
):
OvsNet.__init__(self,
session=session,
_id=_id,
name=name,
policy=policy,
start=False)
self.grekey = key
if self.grekey is None:
self.grekey = self.session.id ^ self.id
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,
session=session,
remoteip=remoteip,
localip=localip,
ttl=ttl,
key=self.grekey,
)
if start:
self.startup()
def add_ips(self, ips: List[str]) -> None:
"""
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.
:param ips: address list
:return: nothing
"""
if self.gretap:
raise ValueError(f"gretap already exists for {self.name}")
remoteip = ips[0].split("/")[0]
localip = None
if len(ips) > 1:
localip = ips[1].split("/")[0]
self.gretap = GreTap(
session=self.session,
remoteip=remoteip,
localip=localip,
ttl=self.ttl,
key=self.grekey,
)
self.attach(self.gretap)
def addnettunnel(self, node_id):
"""
Add network tunnel between node and broker.
:param int node_id: node id of network to add tunnel to
:return: list of gre taps
:rtype: list
"""
try:
net = self.session.get_node(node_id)
logging.info("adding net tunnel for: id(%s) %s", node_id, net)
except KeyError:
raise KeyError("network node %s not found" % node_id)
# add other nets here that do not require tunnels
if nodeutils.is_node(net, NodeTypes.EMANE_NET):
logging.warning("emane network does not require a tunnel")
return None
server_interface = getattr(net, "serverintf", None)
if nodeutils.is_node(
net, NodeTypes.CONTROL_NET) and server_interface is not None:
logging.warning(
"control networks with server interfaces do not need a tunnel")
return None
servers = self.getserversbynode(node_id)
if len(servers) < 2:
logging.warning("not enough servers to create a tunnel: %s",
servers)
return None
hosts = []
for server in servers:
if server.host is None:
continue
logging.info("adding server host for net tunnel: %s", server.host)
hosts.append(server.host)
if len(hosts) == 0:
for session_client in self.session_clients:
# get IP address from API message sender (master)
if session_client.client_address != "":
address = session_client.client_address[0]
logging.info("adding session_client host: %s", address)
hosts.append(address)
r = []
for host in hosts:
if self.myip:
# we are the remote emulation server
myip = self.myip
else:
# we are the session master
myip = host
key = self.tunnelkey(node_id, IpAddress.to_int(myip))
if key in self.tunnels.keys():
logging.info(
"tunnel already exists, returning existing tunnel: %s",
key)
gt = self.tunnels[key]
r.append(gt)
continue
logging.info("adding tunnel for net %s to %s with key %s", node_id,
host, key)
gt = GreTap(node=None,
name=None,
session=self.session,
remoteip=host,
key=key)
self.tunnels[key] = gt
r.append(gt)
# attaching to net will later allow gt to be destroyed
# during net.shutdown()
net.attach(gt)
return r