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 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.objid, ifindex, sessionid)
except TypeError:
suffix = "%s.%s.%s" % (self.objid, 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])
logger.debug("interface command output: %s", output)
output = output.split("\n")
veth.flow_id = int(output[0].strip().split(":")[0]) + 1
logger.debug("interface flow index: %s - %s", veth.name, veth.flow_id)
veth.hwaddr = MacAddress.from_string(output[1].strip().split()[1])
logger.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 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 net: network to associate interface with
:return: nothing
"""
self.lock.acquire()
try:
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.objid, ifindex, sessionid)
except TypeError:
suffix = "%s.%s.%s" % (self.objid, 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,
mtu=1500,
net=net,
start=self.up)
if self.up:
subprocess.check_call([
constants.IP_BIN, "link", "set", veth.name, "netns",
str(self.pid)
])
self.cmd([
constants.IP_BIN, "link", "set", veth.name, "name", ifname
])
veth.name = ifname
# retrieve interface information
result, output = self.cmdresult(["ip", "link", "show", veth.name])
logger.info("interface command output: %s", output)
output = output.split("\n")
veth.flow_id = int(output[0].strip().split(":")[0]) + 1
logger.info("interface flow index: %s - %s", veth.name,
veth.flow_id)
veth.hwaddr = output[1].strip().split()[1]
logger.info("interface mac: %s - %s", veth.name, veth.hwaddr)
try:
self.addnetif(veth, ifindex)
except:
veth.shutdown()
del veth
raise
return ifindex
finally:
self.lock.release()
