def newveth(self,
iface_id: int = None,
ifname: str = None,
mtu: int = None) -> int:
"""
Create a new interface.
:param iface_id: id for the new interface
:param ifname: name for the new interface
:param mtu: mtu for interface
:return: nothing
"""
with self.lock:
mtu = mtu if mtu is not None else DEFAULT_MTU
iface_id = iface_id if iface_id is not None else self.next_iface_id(
)
ifname = ifname if ifname is not None else f"eth{iface_id}"
sessionid = self.session.short_session_id()
try:
suffix = f"{self.id:x}.{iface_id}.{sessionid}"
except TypeError:
suffix = f"{self.id}.{iface_id}.{sessionid}"
localname = f"veth{suffix}"
name = f"{localname}p"
veth = Veth(self.session, name, localname, mtu, self.server, self)
veth.adopt_node(iface_id, ifname, self.up)
return iface_id
def linknet(self, net):
"""
Link this bridge with another by creating a veth pair and installing
each device into each bridge.
:param core.netns.vnet.LxBrNet net: network to link with
:return: created interface
:rtype: Veth
"""
sessionid = self.session.short_session_id()
try:
_id = "%x" % self.id
except TypeError:
_id = "%s" % self.id
try:
net_id = "%x" % net.id
except TypeError:
net_id = "%s" % net.id
localname = "veth%s.%s.%s" % (_id, net_id, sessionid)
if len(localname) >= 16:
raise ValueError("interface local name %s too long" % localname)
name = "veth%s.%s.%s" % (net_id, _id, sessionid)
if len(name) >= 16:
raise ValueError("interface name %s too long" % name)
netif = Veth(node=None,
name=name,
localname=localname,
mtu=1500,
net=self,
start=self.up)
self.attach(netif)
if net.up:
# this is similar to net.attach() but uses netif.name instead
# of localname
utils.check_cmd(
[constants.BRCTL_BIN, "addif", net.brname, netif.name])
utils.check_cmd(
[constants.IP_BIN, "link", "set", netif.name, "up"])
i = net.newifindex()
net._netif[i] = netif
with net._linked_lock:
net._linked[netif] = {}
netif.net = self
netif.othernet = net
return netif
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:
_id = "%x" % self.id
except TypeError:
_id = "%s" % self.id
try:
network_id = "%x" % network.id
except TypeError:
network_id = "%s" % network.id
localname = "veth%s.%s.%s" % (_id, network_id, session_id)
if len(localname) >= 16:
raise ValueError("interface local name %s too long" % localname)
name = "veth%s.%s.%s" % (network_id, _id, 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
utils.check_cmd([
constants.OVS_BIN, "add-port", network.bridge_name,
interface.name
])
utils.check_cmd(
[constants.IP_BIN, "link", "set", interface.name, "up"])
network.attach(interface)
interface.net = self
interface.othernet = network
return interface
def linknet(self, net: CoreNetworkBase) -> CoreInterface:
"""
Link this bridge with another by creating a veth pair and installing
each device into each bridge.
:param net: network to link with
:return: created interface
"""
sessionid = self.session.short_session_id()
try:
_id = f"{self.id:x}"
except TypeError:
_id = str(self.id)
try:
net_id = f"{net.id:x}"
except TypeError:
net_id = str(net.id)
localname = f"veth{_id}.{net_id}.{sessionid}"
name = f"veth{net_id}.{_id}.{sessionid}"
iface = Veth(self.session, name, localname)
if self.up:
iface.startup()
self.attach(iface)
if net.up and net.brname:
iface.net_client.set_iface_master(net.brname, iface.name)
i = net.next_iface_id()
net.ifaces[i] = iface
with net.linked_lock:
net.linked[iface] = {}
iface.net = self
iface.othernet = net
return iface
def linknet(self, net):
"""
Link this bridge with another by creating a veth pair and installing
each device into each bridge.
:param core.netns.vnet.LxBrNet net: network to link with
:return: created interface
:rtype: Veth
"""
sessionid = self.session.short_session_id()
try:
_id = f"{self.id:x}"
except TypeError:
_id = str(self.id)
try:
net_id = f"{net.id:x}"
except TypeError:
net_id = str(net.id)
localname = f"veth{_id}.{net_id}.{sessionid}"
if len(localname) >= 16:
raise ValueError(f"interface local name {localname} too long")
name = f"veth{net_id}.{_id}.{sessionid}"
if len(name) >= 16:
raise ValueError(f"interface name {name} too long")
netif = Veth(self.session, None, name, localname, start=self.up)
self.attach(netif)
if net.up:
# this is similar to net.attach() but uses netif.name instead of localname
netif.net_client.create_interface(net.brname, netif.name)
i = net.newifindex()
net._netif[i] = netif
with net._linked_lock:
net._linked[netif] = {}
netif.net = self
netif.othernet = net
return netif
def newveth(self, ifindex=None, ifname=None, net=None):
"""
Create a new interface.
:param int ifindex: index for the new interface
:param str ifname: name for the new interface
:param core.nodes.base.CoreNetworkBase net: network to associate interface with
:return: nothing
"""
with self.lock:
if ifindex is None:
ifindex = self.newifindex()
if ifname is None:
ifname = "eth%d" % ifindex
sessionid = self.session.short_session_id()
try:
suffix = "%x.%s.%s" % (self.id, ifindex, sessionid)
except TypeError:
suffix = "%s.%s.%s" % (self.id, ifindex, sessionid)
localname = "veth" + suffix
if len(localname) >= 16:
raise ValueError("interface local name (%s) too long" % localname)
name = localname + "p"
if len(name) >= 16:
raise ValueError("interface name (%s) too long" % name)
veth = Veth(node=self, name=name, localname=localname, net=net, start=self.up)
if self.up:
utils.check_cmd([constants.IP_BIN, "link", "set", veth.name, "netns", str(self.pid)])
self.check_cmd([constants.IP_BIN, "link", "set", veth.name, "name", ifname])
veth.name = ifname
if self.up:
# TODO: potentially find better way to query interface ID
# retrieve interface information
output = self.check_cmd(["ip", "link", "show", veth.name])
logging.debug("interface command output: %s", output)
output = output.split("\n")
veth.flow_id = int(output[0].strip().split(":")[0]) + 1
logging.debug("interface flow index: %s - %s", veth.name, veth.flow_id)
# TODO: mimic packed hwaddr
# veth.hwaddr = MacAddress.from_string(output[1].strip().split()[1])
logging.debug("interface mac: %s - %s", veth.name, veth.hwaddr)
try:
self.addnetif(veth, ifindex)
except ValueError as e:
veth.shutdown()
del veth
raise e
return ifindex
def linknet(self, net: CoreNetworkBase) -> CoreInterface:
"""
Link this bridge with another by creating a veth pair and installing
each device into each bridge.
:param net: network to link with
:return: created interface
"""
sessionid = self.session.short_session_id()
try:
_id = f"{self.id:x}"
except TypeError:
_id = str(self.id)
try:
net_id = f"{net.id:x}"
except TypeError:
net_id = str(net.id)
localname = f"veth{_id}.{net_id}.{sessionid}"
if len(localname) >= 16:
raise ValueError(f"interface local name {localname} too long")
name = f"veth{net_id}.{_id}.{sessionid}"
if len(name) >= 16:
raise ValueError(f"interface name {name} too long")
netif = Veth(self.session, None, name, localname, start=self.up)
self.attach(netif)
if net.up and net.brname:
netif.net_client.set_interface_master(net.brname, netif.name)
i = net.newifindex()
net._netif[i] = netif
with net._linked_lock:
net._linked[netif] = {}
netif.net = self
netif.othernet = net
return netif
def newveth(self, iface_id: int = None, ifname: str = None) -> int:
"""
Create a new interface.
:param iface_id: id for the new interface
:param ifname: name for the new interface
:return: nothing
"""
with self.lock:
if iface_id is None:
iface_id = self.next_iface_id()
if ifname is None:
ifname = f"eth{iface_id}"
sessionid = self.session.short_session_id()
try:
suffix = f"{self.id:x}.{iface_id}.{sessionid}"
except TypeError:
suffix = f"{self.id}.{iface_id}.{sessionid}"
localname = f"veth{suffix}"
if len(localname) >= 16:
raise ValueError(
f"interface local name ({localname}) too long")
name = localname + "p"
if len(name) >= 16:
raise ValueError(f"interface name ({name}) too long")
veth = Veth(self.session,
self,
name,
localname,
start=self.up,
server=self.server)
if self.up:
self.net_client.device_ns(veth.name, str(self.pid))
self.node_net_client.device_name(veth.name, ifname)
self.node_net_client.checksums_off(ifname)
veth.name = ifname
if self.up:
flow_id = self.node_net_client.get_ifindex(veth.name)
veth.flow_id = int(flow_id)
logging.debug("interface flow index: %s - %s", veth.name,
veth.flow_id)
mac = self.node_net_client.get_mac(veth.name)
logging.debug("interface mac: %s - %s", veth.name, mac)
veth.set_mac(mac)
try:
# add network interface to the node. If unsuccessful, destroy the
# network interface and raise exception.
self.add_iface(veth, iface_id)
except ValueError as e:
veth.shutdown()
del veth
raise e
return iface_id