def __del__(self):
"""Clean up datapath
"""
output.dbg("Clean up datapath "+self.name,
self.__class__.__name__)
if (self.connected):
self.disconnect()
for i in self.interfaces[:]:
self.del_if(i)
cmd.run_cmd(DPCTL+" del-dp "+self.name,
self.__class__.__name__)
def __init__(self, name):
"""Initialize datapath
@param name name of datapath
"""
##Name of datapath
self.name = name
cmd.run_cmd(DPCTL+" add-dp "+name,
self.__class__.__name__)
##List of interfaces
self.interfaces = []
##Connected to controller or not
self.connected = False
def get_wireless_info(self, intf):
"""Get wireless information of interface
@param intf interface
"""
(ret, out) = cmd.run_cmd(IWCONFIG+" "+intf, self.__class__.__name__)
return self.__parse_iwconfig("\n".join(out))
def up(self, intf):
"""Activate interface
@param intf interface name
"""
return cmd.run_cmd(IFCONFIG+" "+intf+" up",
self.__class__.__name__)
def down(self, intf):
"""Deactivate interface
@param intf interface name
"""
return cmd.run_cmd(IFCONFIG+" "+intf+" down",
self.__class__.__name__)
def disconnect(self):
"""Disconnect datapath from controller
"""
self.connected = False
return cmd.run_cmd("screen -d -r coin-ovs-"+self.name+\
" -X quit",
self.__class__.__name__)
def query_route(self):
"""Query for current route
"""
c = ROUTE+ " -n"
(ret, out) = cmd.run_cmd(c, self.__class__.__name__)
self.__routes = []
for l in out[2:]:
self.__routes.append(route_entry(l))
def query_arp(self):
"""Query arp table
"""
c = ARP+ " -n"
(ret, out) = cmd.run_cmd(c, self.__class__.__name__)
self.__arp = []
for l in out[1:]:
self.__arp.append(arp_entry(l))
def set_ip_mac(self, ip, mac):
"""Set mac address for IP address
@param ip IP address
@param mac Ethernet address
"""
c = ARP+" -s "+ip+" "+mac
(ret, out) = cmd.run_cmd(c, self.__class__.__name__)
def add_if(self, intf):
"""Add interface to datapath
@param intf name of interface
@return command's exit status
"""
self.interfaces.append(intf)
return cmd.run_cmd(DPCTL+" add-if "+self.name+" "+intf,
self.__class__.__name__)
def get_ports(self):
"""Return dictionary of ports
"""
r = cmd.run_cmd(DPCTL+" show "+self.name,
self.__class__.__name__)
d = {}
for l in r[1][2:]:
pn = l.strip().split(":")
d[pn[1].strip()] = int(pn[0][4:].strip())
return d
def set_eth_addr(self, intf, addr):
"""Set Ethernet addr
@param intf interface name
@param addr Ethernet address string
"""
self.down(intf)
c = IFCONFIG+" "+intf+" hw ether "+addr
ret = cmd.run_cmd(c, self.__class__.__name__)
self.up(intf)
return ret
def associate(self, intf, essid, ap=None, channel=None,
rate=None, txpower = None):
"""Associate with an AP
@param intf interface to associate AP with
@param essid SSID to associate with
@oaram ap mac address of AP
@param channel channel to use
@param rate rate to use
"""
c = IWCONFIG+" "+intf+" essid "+essid
if channel != None:
c += " channel "+str(channel)
if ap != None:
c += " ap "+ap
if rate != None:
c += " rate "+rate
if txpower != None:
c += " txpower "+txpower
cmd.run_cmd(c, self.__class__.__name__)
def set_ipv4_addr(self, intf, addr, netmask=None):
"""Set IPv4 address
@param intf interface name
@param addr IPv4 address string
@param netmask network mask string
@return result of command
"""
c = IFCONFIG+" "+intf+" "+addr
if (netmask != None):
c += " netmask "+netmask
return cmd.run_cmd(c, self.__class__.__name__)
def del_if(self, intf):
"""Remove interface to datapath
@param intf name of interface
@return command's exit status
"""
if (intf in self.interfaces):
self.interfaces.remove(intf)
return cmd.run_cmd(DPCTL+" del-if "+self.name+" "+intf,
self.__class__.__name__)
else:
output.warn("Interface "+intf+" do not exist for deletion",
self.__class__.__name__)
def get_wireless_scan(self, intf, ssid=None):
"""Scan wireless using interface
@param intf interface
"""
(ret, out) = cmd.run_cmd(IWLIST+" "+intf+" scanning",
self.__class__.__name__)
scanr = self.__parsescan(out)
if (ssid != None):
scanrfiltered = []
for s in scanr:
if (s["ESSID"] == ssid):
scanrfiltered.append(s)
return scanrfiltered
return scanr
def change_route(self, command, target, gw=None, netmask=None, iface=None):
"""Change route
@param cmd add or del
@param target target, e.g., -net or -host or default
@param gw gateway
@param netmask network mask
@param iface interface
"""
c = ROUTE+" "+command+" "+target
if (gw != None):
c += " gw "+gw
if (netmask != None):
c += " netmask "+netmask
if (iface != None):
c += " dev "+iface
(ret, out) = cmd.run_cmd(c, self.__class__.__name__)
def veth_init_clean(self):
"""Initial veth cleanup
"""
for i in self.interfaces():
cmd.run_cmd("ip link del "+str(i),
self.__class__.__name__)
