def add_flow(self, priority, dl_type, nw_dst, nw_src, queue_id, action, interface):
#TODO: Add low-level checking
of_msg = of.ofp_flow_mod()
of_msg.priority = int(priority)
of_msg.match.dl_type = dl_type
of_msg.match.nw_dst = nw_dst
of_msg.match.nw_src = nw_src
#: Ports: eth0 = 1, wifi = 2, eth3: 4g
if action == 'forward':
port = of.OFPP_NORMAL
if queue_id is not None:
of_msg.actions.append(of.ofp_action_enqueue(port=1, \
queue_id=int(queue_id)))
of_msg.actions.append(of.ofp_action_enqueue(port=2, \
queue_id=int(queue_id)))
of_msg.actions.append(of.ofp_action_enqueue(port=3, \
queue_id=int(queue_id)))
else:
of_msg.actions.append(of.ofp_action_output(port=port))
else:
of_msg.actions = []
self.current_connection.send(of_msg)
def add_flows(ev, ipsrc, ipdst, n):
inport = 0
if ipsrc == "10.0.0." and ipdst == "11.0.0.":
inport = 6
elif ipsrc == "10.0.0." and ipdst == "12.0.0.":
inport = 7
elif ipsrc == "11.0.0." and ipdst == "10.0.0.":
inport = 6
elif ipsrc == "11.0.0." and ipdst == "12.0.0.":
inport = 7
elif ipsrc == "12.0.0." and ipdst == "10.0.0.":
inport = 6
elif ipsrc == "12.0.0." and ipdst == "11.0.0.":
inport = 7
for j in range(1, 6):
msg = of.ofp_flow_mod()
msg.match.dl_type = 0x0800
myipdst = ipdst + str(j)
msg.match.nw_dst = myipdst
msg.actions.append(
of.ofp_action_dl_addr.set_dst(
EthAddr("00:00:00:00:00:" + str(n) + str(j))))
if str(myipdst).rsplit('.', 1)[1] == "1" or str(myipdst).rsplit(
'.', 1)[1] == "2":
msg.actions.append(of.ofp_action_enqueue(port=inport, queue_id=1))
elif str(myipdst).rsplit('.', 1)[1] == "3" or str(myipdst).rsplit(
'.', 1)[1] == "4":
msg.actions.append(of.ofp_action_enqueue(port=inport, queue_id=2))
elif str(myipdst).rsplit('.', 1)[1] == "5":
msg.actions.append(of.ofp_action_enqueue(port=inport, queue_id=3))
ev.connection.send(msg)
def add_flow(self, priority, dl_type, nw_dst, nw_src, queue_id, action,
interface):
#TODO: Add low-level checking
of_msg = of.ofp_flow_mod()
of_msg.priority = int(priority)
of_msg.match.dl_type = dl_type
of_msg.match.nw_dst = nw_dst
of_msg.match.nw_src = nw_src
#: Ports: eth0 = 1, wifi = 2, eth3: 4g
if action == 'forward':
port = of.OFPP_NORMAL
if queue_id is not None:
of_msg.actions.append(of.ofp_action_enqueue(port=1, \
queue_id=int(queue_id)))
of_msg.actions.append(of.ofp_action_enqueue(port=2, \
queue_id=int(queue_id)))
of_msg.actions.append(of.ofp_action_enqueue(port=3, \
queue_id=int(queue_id)))
else:
of_msg.actions.append(of.ofp_action_output(port=port))
else:
of_msg.actions = []
self.current_connection.send(of_msg)
def _handle_PacketIn(event): global s1_dpid, s2_dpid # print "PacketIn: ", dpidToStr(event.connection.dpid) if event.connection.dpid==s1_dpid: # Flujo entrante por el puerto 2 (h1 --- s1) msg = of.ofp_flow_mod() msg.priority = 100 # A numero mas alto mayor prioridad msg.idle_timeout = 0 msg.hard_timeout = 0 msg.match.in_port = 2 msg.match.dl_type = 0x0800 msg.match.nw_proto = 6 msg.match.tp_src=5000 msg.actions.append(of.ofp_action_enqueue(port = 1, queue_id = 2)) event.connection.send(msg) # Flujo entrante por el puerto 1 (s1 --- s2) msg = of.ofp_flow_mod() msg.priority = 1 msg.idle_timeout = 0 msg.hard_timeout = 0 msg.match.in_port = 1 msg.match.dl_type = 0x0800 msg.match.nw_proto = 6 msg.match.tp_dst=5000 # Aqui tengo mis dudas por ser dos switches? msg.actions.append(of.ofp_action_output(port = 2)) event.connection.send(msg) if event.connection.dpid==s2_dpid: # Flujo entrante por el puerto 2 (s2 --- h2) msg = of.ofp_flow_mod() msg.priority = 100 # A numero mas alto mayor prioridad msg.idle_timeout = 0 msg.hard_timeout = 0 msg.match.in_port = 2 msg.match.dl_type = 0x0800 msg.match.nw_proto = 6 msg.match.tp_dst=5000 msg.actions.append(of.ofp_action_enqueue(port = 1, queue_id = 2)) event.connection.send(msg) # Flujo entrante por el puerto 1 (s1 --- s2) msg = of.ofp_flow_mod() msg.priority = 1 msg.idle_timeout = 0 msg.hard_timeout = 0 msg.match.in_port = 1 msg.match.dl_type = 0x0800 msg.match.nw_proto = 6 msg.match.tp_src=5000 # Aqui tengo mis dudas por ser dos switches? msg.actions.append(of.ofp_action_output(port = 2)) event.connection.send(msg)
def create(self, switch1, switch2):
self.switches2 += [switch1, switch2]
try:
s = self.switches[switch1]
s = self.switches[switch2]
except KeyError:
s = self.WPSwitch(switch1)
self.switches[s.dpid] = s
s = self.WPSwitch(switch2)
self.switches[s.dpid] = s
if self.qos:
path = nx.shortest_path (graph, switch1, switch2, weight='cost')
log.info(' -> path with minimum QoS cost between {} and {} is: {}'.format(switch1, switch2, path))
else:
path = nx.shortest_path (graph, switch1, switch2)
log.info(' -> shortest path between {} and {} is: {}'.format(switch1, switch2, path))
self.path = path
msg = of.ofp_flow_mod()
msg.command = of.OFPFC_MODIFY_STRICT # of.OFPFC_MODIFY || of.OFPFC_ADD
#msg.match.dl_type = 0x0880 # Causes conflicts with user-space switches
msg.match.dl_dst = self.title_hash[:6]
msg.match.dl_src = self.title_hash[6:]
if path.__len__() > 1:
if self.bw and self.cos:
log.info(" -> enqueuing in queue 1, corresponding to CoS silver")
for i in path:
if i == path[-1]:
self.switches[i].used_ports.add(graph[i][path[path.index(i)-1]]['ports'][i])
elif i == path[0]:
self.switches[i].used_ports.add(graph[i][path[path.index(i)+1]]['ports'][i])
else:
try:
s = self.switches[i]
except KeyError:
s = self.WPSwitch(i)
self.switches[i] = s
self.switches[i].used_ports.add(graph[i][path[path.index(i)+1]]['ports'][i])
self.switches[i].used_ports.add(graph[i][path[path.index(i)-1]]['ports'][i])
if self.bw and self.cos:
if cos[self.cos]:
cos[self.cos] += self.bw
else:
cos[self.cos] = self.bw
log.info(' -> Class of Service {} equals {} after receiving {}'.format([self.cos], cos[self.cos], self.bw))
msg.actions = [of.ofp_action_enqueue(port=p, queue_id=0) for p in self.switches[i].used_ports] # ofp_action_enqueue(port=0, queue_id=0)
else:
msg.actions = [of.ofp_action_enqueue(port=p, queue_id=1) for p in self.switches[i].used_ports]
core.openflow.sendToDPID(i, msg)
else:
msg.actions = [of.ofp_action_output(port=p) for p in s.used_ports]
core.openflow.sendToDPID(s.dpid, msg)
def create(self, switch1, switch2):
self.switches2 += [switch1, switch2]
try:
s = self.switches[switch1]
s = self.switches[switch2]
except KeyError:
s = self.WPSwitch(switch1)
self.switches[s.dpid] = s
s = self.WPSwitch(switch2)
self.switches[s.dpid] = s
if self.qos:
path = nx.shortest_path (graph, switch1, switch2, weight='cost')
log.info(' -> path with minimum QoS cost between {} and {} is: {}'.format(switch1, switch2, path))
else:
path = nx.shortest_path (graph, switch1, switch2)
log.info(' -> shortest path between {} and {} is: {}'.format(switch1, switch2, path))
self.path = path
msg = of.ofp_flow_mod()
msg.command = of.OFPFC_MODIFY_STRICT # of.OFPFC_MODIFY || of.OFPFC_ADD
#msg.match.dl_type = 0x0880 # Causes conflicts with user-space switches
msg.match.dl_dst = self.title_hash[:6]
msg.match.dl_src = self.title_hash[6:]
if path.__len__() > 1:
if self.bw and self.cos:
log.info(" -> enqueuing in queue 1, corresponding to CoS silver")
for i in path:
if i == path[-1]:
self.switches[i].used_ports.add(graph[i][path[path.index(i)-1]]['ports'][i])
elif i == path[0]:
self.switches[i].used_ports.add(graph[i][path[path.index(i)+1]]['ports'][i])
else:
try:
s = self.switches[i]
except KeyError:
s = self.WPSwitch(i)
self.switches[i] = s
self.switches[i].used_ports.add(graph[i][path[path.index(i)+1]]['ports'][i])
self.switches[i].used_ports.add(graph[i][path[path.index(i)-1]]['ports'][i])
if self.bw and self.cos:
msg.actions = [of.ofp_action_enqueue(port=p, queue_id=0) for p in self.switches[i].used_ports] # ofp_action_enqueue(port=0, queue_id=0)
else:
msg.actions = [of.ofp_action_enqueue(port=p, queue_id=1) for p in self.switches[i].used_ports]
core.openflow.sendToDPID(i, msg)
else:
msg.actions = [of.ofp_action_output(port=p) for p in s.used_ports]
core.openflow.sendToDPID(s.dpid, msg)
def add_flow(msg, msg2, queue):
global s1_dpid, s2_dpid, s3_dpid
for connection in core.openflow._connections.values():
if connection.dpid == s1_dpid:
msg.actions.append(of.ofp_action_enqueue(port=4, queue_id=queue))
connection.send(msg)
if msg.match.nw_src == "10.0.0.1":
msg2.actions.append(of.ofp_action_output(port=1))
elif msg.match.nw_src == "10.0.0.2":
msg2.actions.append(of.ofp_action_output(port=2))
elif msg.match.nw_src == "10.0.0.3":
msg2.actions.append(of.ofp_action_output(port=3))
elif connection.dpid == s2_dpid:
msg.actions.append(of.ofp_action_output(port=3))
connection.send(msg)
if msg.match.nw_src == "10.0.0.1" or msg.match.nw_src == "10.0.0.2" or msg.match.nw_src == "10.0.0.3":
msg2.actions.append(of.ofp_action_output(port=1))
elif connection.dpid == s3_dpid:
msg.actions.append(of.ofp_action_output(port=2))
connection.send(msg)
if msg.match.nw_src == "10.0.0.1" or msg.match.nw_src == "10.0.0.2" or msg.match.nw_src == "10.0.0.3":
msg2.actions.append(of.ofp_action_output(port=3))
def handle_flows_redirection(cls, dpid, connections, switch_addresss, message):
""" Sends flow mod messages to redirect flows to created queues """
#print 'message from ' + str(switch_addresss)
#print 'Connections ' + str(dir(connections))
dpid = dpid[:len(dpid)-1]
dpid = dpid[len(dpid)-12:]
#print 'Received dpid: ' + str(dpid)
#print "message to be used for redirection" + str(message)
msg = of.ofp_flow_mod(command=of.OFPFC_DELETE)
msg.priority = 65535
#print "dpid parameter: " + str(dpid)
for connection in connections:
connection_dpid = connection.dpid
dpid_str = dpidToStr(connection_dpid)
dpid_str = dpid_str.replace("-", "")
#print 'Real dpid_str: ' + dpid_str
if dpid == dpid_str:
connection.send(msg)
#print 'Sent to: ' + str(connection)
#print 'Well...done'
for i in range(len(message['bw_list'])):
# We only want to redirect outgoing flows
if message['bw_list'][i]['action'] != 'OFPP_LOCAL':
my_match = of.ofp_match(dl_type = 0x800,nw_src=message['bw_list'][i]['nw_src'],nw_dst=message['bw_list'][i]['nw_dst'])
#print "Flow Match: " + str(my_match)
msg = of.ofp_flow_mod()
msg.match = my_match
msg.priority = 65535
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.actions.append(of.ofp_action_enqueue(port=int(message['bw_list'][i]['action']), queue_id=int(message['queue_list'][i]['queueId'])))
#print "Flow mod message: " + str(msg)
#toDo: Check a better way to do this
#print "dpid parameter: " + str(dpid)
for connection in connections:
connection_dpid=connection.dpid
#print "Connection dpid: " + str(connection_dpid)
dpid_str=dpidToStr(connection_dpid)
dpid_str=dpid_str.replace("-", "")
#print 'Real dpid_str: ' + dpid_str
if dpid == dpid_str:
connection.send(msg)
global flow_mod_time
flow_mod_time = time.time()
print "Notification time: " + str(notification_time)
print "Flow stats reply: " + str(flow_stats_reply_time)
print "Queues done time: " + str(queues_done_time)
print "Flow mode time :" + str(flow_mod_time)
def flood (message = None):
""" Floods the packet """
msg = of.ofp_packet_out()
if time.time() - self.connection.connect_time >= _flood_delay:
# Only flood if we've been connected for a little while...
if self.hold_down_expired is False:
# Oh yes it is!
self.hold_down_expired = True
log.info("%s: Flood hold-down expired -- flooding",
dpid_to_str(event.dpid))
if message is not None: log.debug(message)
#log.debug("%i: flood %s -> %s", event.dpid,packet.src,packet.dst)
# OFPP_FLOOD is optional; on some switches you may need to change
# this to OFPP_ALL.
msg = of.ofp_packet_out()
for port in self.switchPorts:
if port != event.port:
if packet.find('tcp') != None and (packet.payload.payload.srcport == 5002 or packet.payload.payload.dstport == 5002):
msg.actions.append(of.ofp_action_enqueue(port = of.OFPP_FLOOD,queue_id=1))
else:
msg.actions.append(of.ofp_action_output(port = of.OFPP_FLOOD))
else:
pass
msg.data = event.ofp
msg.in_port = event.port
self.connection.send(msg)
def SendFlowMod(port, event, src, dst, placeInThrottleQueue): msg = of.ofp_flow_mod() # msg is a flow modification (openflow) msg.priority = 100 msg.idle_timeout = 0 # Timeout the flow rule, if no traffic is happening during x seconds msg.hard_timeout = 0 # Timeout the flow rule after X seconds msg.match.dl_type = 0x0800 # ipv4 traffic code - the rule will only affect ipv4 msg.match.nw_src = src # Source IP msg.match.nw_dst = dst # Destination IP if placeInThrottleQueue == True: # Place in the throttled queue msg.actions = [of.ofp_action_enqueue(port=port, queue_id=1)] elif placeInThrottleQueue == False: # Place in the non-throttled queue msg.actions.append(of.ofp_action_enqueue(port=port, queue_id=0)) # Send message to the switch, responsible for the flow event.connection.send(msg)
def enviar_a_fila(self, event, port):
# Este metodo en particular, envia hacia una fila determinada por el ultimo octeto de la IP de origen, si la direccion es 10.0.0.1 enviara a la fila 1
# note que tomamos el parametro "port" que nos indica el puerto de destino
packet = event.parsed
ip_packet = packet.payload
ip_origen = ip_packet.srcip
hora1 = datetime.strftime("06:00:00", "%X").time()
hora2 = datetime.strftime("18:00:00", "%X").time()
hora_act = datetime.now().time()
print hora_act
if hora_act > hora1 and hora_act < hora2:
print "Hora actual 1 " + hora_act
id_fila = 1
else:
print "Hora actual 2 " + hora_act
id_fila = 2
#id_fila = str(ip_origen).split(".")[3]
print "La fila seria: ", id_fila
msg = of.ofp_flow_mod()
msg.match = of.ofp_match.from_packet(packet, event.port)
msg.idle_timeout = 10
msg.hard_timeout = 30
# La unica diferencia respecto a un "output" normal, es que agregamos el id de la fila
msg.actions.append(
of.ofp_action_enqueue(port=port, queue_id=int(id_fila)))
msg.data = event.ofp # 6a
self.connection.send(msg)
def push_flow_label(self, source_ip, dest_ip, out_port):
msg = of.ofp_flow_mod()
print "Flow label for destination network : "+self.buffer[dest_ip]['DestinationNetwork']
msg.priority = 10
msg.match.dl_type = ethernet.IP_TYPE
#msg.match.nw_proto = ipv4.ICMP_PROTOCOL
if dest_ip == "10.0.4.100":
print "The flow that's going to be added must match source ip ("+source_ip+") too along with destination ip "+dest_ip
msg.match.nw_src = IPAddr(source_ip)
else:
print "source_ip match constraint not added"
msg.match.set_nw_dst(self.buffer[dest_ip]['DestinationNetwork'])
# msg.match.nw_dst = IPAddr(srcip)
msg.actions.append(of.ofp_action_dl_addr.set_src(EthAddr(self.arp_table[self.routing_table[self.buffer[dest_ip]['DestinationNetwork']]['RouterInterface']])))
msg.actions.append(of.ofp_action_dl_addr.set_dst(EthAddr(self.arp_table[dest_ip])))
if dest_ip == "10.0.4.100":
if source_ip == "10.0.1.100":
queueno=1
elif source_ip == "10.0.2.100":
queueno=2
else:
queueno=0
print "PUSHING QOS FLOW for source_ip "+source_ip+" @queue "+str(queueno)
msg.actions.append(of.ofp_action_enqueue(port = 4, queue_id=queueno))
self.allocated_bandwidths[source_ip] = {'dest_ip': dest_ip,'bandwidth': queueno} #queueno denotes bandwidth
else:
print "PUSHING REGULAR FLOW!"
msg.actions.append(of.ofp_action_output(port=out_port))
self.connection.send(msg)
log.debug("Flow mod for destination network %s sent!", self.buffer[srcip]['DestinationNetwork'])
log.debug("allocated bandwidths table : "+self.allocated_bandwidths)
def act_like_switch (self, packet, packet_in):
"""
Implement switch-like behavior.
"""
srcaddr = EthAddr(packet.src)
if not self.mac_to_port.has_key(srcaddr):
self.mac_to_port[srcaddr] = packet_in.in_port
for key, value in dict.items(self.mac_to_port):
print key, value
dstaddr = EthAddr(packet.dst)
#if my_match.dl_dst in mac_t _port:
if dstaddr in self.mac_to_port:
# Send packet out the associated port
out_port = self.mac_to_port[dstaddr]
match = of.ofp_match()
msg = of.ofp_flow_mod() #creates a flow table entry in switc
#msg.match.dl_src = srcaddr
#msg.match.dl_dst = dstaddr
msg.match.tp_dst = out_port
for con in core.openflow.connections:
msg2 = of.ofp_queue_stats_request()
msg2.port_no = out_port
msg2.queue_id = of.OFPQ_ALL
con.send(of.ofp_stats_request(body=msg2))
# Add an action to send to the specified port
action = of.ofp_action_output(port = of.OFPP_CONTROLLER)
msg.actions.append(action)
queue_action = of.ofp_action_enqueue()
queue_action.port = out_port
queue_action.queue_id = 1
msg.actions.append(queue_action)
print "printing q stats in act like switch\n"
#global stats1
#print ("%s",s.stats)
for f in s.stats:
print f
print "\n"
# Send message to switch
self.connection.send(msg)
self.resend_packet(packet_in,out_port)
else:
# Flood the packet out everything but the input port
# This part looks familiar, right?
self.resend_packet (packet_in,of.OFPP_FLOOD)
print "------flood-------"
def forward(outport, message=None, is_premium=False):
message.data = event.ofp
if is_premium:
message.actions.append(
of.ofp_action_enqueue(port=outport, queue_id=1))
else:
message.actions.append(of.ofp_action_output(port=outport))
event.connection.send(msg)
def _handle_PacketIn(event):
global s1_dpid, s2_dpid
#print("payload:"+str(dir(event.parsed.payload)))
#print("event.con:"+str(event.connection))
#print("hwdst:"+str(event.parsed.payload.hwdst))
switch_id = event.connection.dpid
print "switch_id:"
print switch_id
packet = event.parsed
(pckt_srcip, hasARP) = getSrcIPandARP(packet.next)
if pckt_srcip is None:
pckt_srcip = "10.0.0.0"
#print("Pckt_srcip:"+str(pckt_srcip))
#self.updateIPInfo(pckt_srcip,macEntry,hasARP)
print("pckt_srcip is NONE and is set to 10.0.0.0!")
inTable[(event.connection, packet.src)] = event.port
dst_port = inTable.get((event.connection, packet.dst))
#print('came into handle_packetin')
if dst_port is None:
# We don't know where the destination is yet. So, we'll just
# send the packet out all ports (except the one it came in on!)
# and hope the destination is out there somewhere. :)
msg = of.ofp_packet_out(data=event.ofp)
msg.actions.append(of.ofp_action_output(port=all_ports))
event.connection.send(msg)
else:
# Since we know the switch ports for both the source and dest
# MACs, we can install rules for both directions.
msg = of.ofp_flow_mod()
msg.match.dl_dst = packet.src
msg.match.dl_src = packet.dst
msg.actions.append(of.ofp_action_output(port=event.port))
event.connection.send(msg)
# This is the packet that just came in -- we want to
# install the rule and also resend the packet.
msg = of.ofp_flow_mod()
msg.data = event.ofp # Forward the incoming packet
msg.match.dl_src = packet.src
msg.match.dl_dst = packet.dst
#msg.actions.append(of.ofp_action_output(port = dst_port))
#ipv4_packet = event.parsed.find("ipv4")
#if ipv4_packet is None:
# print("ipv4 none")
#ipv4_src_ip = ipv4_packet.srcip
#print("ipv4 src ip :"+str(ipv4_src_ip))
msg.actions.append(
of.ofp_action_enqueue(port=dst_port,
queue_id=getQidFromMatrix(
str(pckt_srcip), switch_id - 1))
) #switch id -1 because it is the index in the matrix for that switch
print("Msg sent to Switch " + str(event.connection.dpid) + ": Port" +
str(dst_port) + ", Queue" +
str(getQidFromMatrix(str(pckt_srcip), switch_id - 1)))
#print("srcip:"+str(packet.src))
event.connection.send(msg)
log.debug("Installing %s <-> %s" % (packet.src, packet.dst))
pass
def send_InstallFlow_msg_IPdst_match(event, _priority, nw_dst_str, _port, _queue_id=0): msg = of.ofp_flow_mod() msg.priority = _priority # Example 10 msg.idle_timeout = 0 msg.hard_timeout = 0 msg.match.dl_type = 0x0800 msg.match.nw_dst = nw_dst_str # Eg : nw_dst_str can be "10.0.0.3" # msg.actions.append(of.ofp_action_output(port = 3)) msg.actions.append(of.ofp_action_enqueue(port = _port, queue_id = _queue_id)) event.connection.send(msg)
def install_enqueue(event, packet, outport, qid):
log.debug("# S%i: Installing flow %s.%i -> %s.%i", dpid, src, inport, dst, outport)
msg = of.ofp_flow_mod()
msg.match = of.ofp_match.from_packet(packet, inport)
msg.actions.append(of.ofp_action_enqueue(port = outport, queue_id = qid))
msg.data = event.ofp
msg.priority = self.VPN_PRIORITY
event.connection.send(msg)
log.debug("# S%i: Rule sent: Outport %i, Queue %i\n", dpid, outport, qid)
return
def send_InstallFlow_msg_IPdst_match(event, _priority, nw_dst_str, _port, _queue_id=0): msg = of.ofp_flow_mod() msg.priority = _priority # Example 10 msg.idle_timeout = 0 msg.hard_timeout = 0 msg.match.dl_type = 0x0800 msg.match.nw_dst = nw_dst_str # Eg : nw_dst_str can be "10.0.0.3" # msg.actions.append(of.ofp_action_output(port = 3)) msg.actions.append(of.ofp_action_enqueue(port = _port, queue_id = _queue_id)) event.connection.send(msg)
def flood(message=None, is_premium=False):
message.data = event.ofp
if is_premium:
message.actions.append(
of.ofp_action_enqueue(port=of.OFPP_FLOOD, queue_id=1))
else:
message.actions.append(
of.ofp_action_output(port=of.OFPP_FLOOD))
# TODO: use OFPP_ALL and checksum to avoid
event.connection.send(msg)
def _handle_PacketIn(event): global s1_dpid, s2_dpid # print "PacketIn: ", dpidToStr(event.connection.dpid) if event.connection.dpid==s1_dpid: # Flujo entrante por el puerto 2 (h1 --- s1) msg = of.ofp_flow_mod() msg.priority = 100 # A numero mas alto mayor prioridad msg.idle_timeout = 0 msg.hard_timeout = 0 msg.match.in_port = 2 msg.actions.append(of.ofp_action_enqueue(port = 1, queue_id = 2)) event.connection.send(msg) # Flujo entrante por el puerto 1 (s1 --- s2) msg = of.ofp_flow_mod() msg.priority = 1 msg.idle_timeout = 0 msg.hard_timeout = 0 msg.match.in_port = 1 msg.actions.append(of.ofp_action_output(port = 2)) event.connection.send(msg) if event.connection.dpid==s2_dpid: # Flujo entrante por el puerto 2 (s2 --- h2) msg = of.ofp_flow_mod() msg.priority = 100 # A numero mas alto mayor prioridad msg.idle_timeout = 0 msg.hard_timeout = 0 msg.match.in_port = 2 msg.actions.append(of.ofp_action_enqueue(port = 1, queue_id = 2)) event.connection.send(msg) # Flujo entrante por el puerto 1 (s1 --- s2) msg = of.ofp_flow_mod() msg.priority = 1 msg.idle_timeout = 0 msg.hard_timeout = 0 msg.match.in_port = 1 msg.actions.append(of.ofp_action_output(port = 2)) event.connection.send(msg)
def install_enqueue(event, packet, outport, q_id):
log.info("Installing flow for %s:%i -> %s:%i", source, port, destination, outport)
message = of.ofp_flow_mod()
message.match = of.ofp_match.from_packet(packet, port)
message.actions.append(of.ofp_action_enqueue(port = outport, queue_id = q_id))
message.data = event.ofp
# Set to Premium Service Channel priority (Task 4)
message.priority = 1000
event.connection.send(message)
log.info("Packet with queue ID %i sent via port %i\n", q_id, outport)
return
def push_flow_label(self, source_ip, dest_ip, out_port):
msg = of.ofp_flow_mod()
print "Flow label for destination network : " + self.buffer[dest_ip][
'DestinationNetwork']
msg.priority = 150
msg.match.dl_type = ethernet.IP_TYPE
#msg.match.nw_proto = ipv4.ICMP_PROTOCOL
if dest_ip == "10.0.2.100":
print "The flow that's going to be added must match source ip (" + source_ip + ") too along with destination ip " + dest_ip
msg.match.nw_src = IPAddr(source_ip)
else:
print "source_ip match constraint not added"
#I SUSPECT MATCHING THIS ENTIRE NETWORK RANGE AND APPENDING A SINGLE MAC ID FOR THE FLOW IS WRONG. DEBUG FROM HERE
msg.match.set_nw_dst(self.buffer[dest_ip]['DestinationNetwork'])
# msg.match.nw_dst = IPAddr(srcip)
msg.actions.append(
of.ofp_action_dl_addr.set_src(
EthAddr(self.arp_table[self.routing_table[self.buffer[dest_ip][
'DestinationNetwork']]['RouterInterface']])))
msg.actions.append(
of.ofp_action_dl_addr.set_dst(EthAddr(self.arp_table[dest_ip])))
print 'the flow will set source MAC as interface oda MAC ID: '
print str((EthAddr(self.arp_table[self.routing_table[
self.buffer[dest_ip]['DestinationNetwork']]['RouterInterface']])))
print ' and dst MAC as destIP oda MAC ID ' + str(
EthAddr(self.arp_table[dest_ip]))
if dest_ip == "10.0.2.100":
if source_ip == "10.0.1.100":
queueno = 1
elif source_ip == "10.0.1.101":
queueno = 2
else:
queueno = 0
print "PUSHING QOS FLOW for source_ip " + source_ip + " @queue " + str(
queueno)
msg.actions.append(
of.ofp_action_enqueue(port=2, queue_id=queueno)
) #BUG WAS HERE, CHANGE OUT_PORT NUMBER HERE IN FUTURE UPDATES!
self.allocated_bandwidths[source_ip] = {
'dest_ip': dest_ip,
'bandwidth': queueno
} #queueno denotes bandwidth
else:
print "(NOT. LOL.) PUSHING REGULAR FLOW!"
return
msg.actions.append(of.ofp_action_output(port=out_port))
self.connection.send(msg)
log.debug("Flow mod for destination network %s sent!",
self.buffer[dest_ip]['DestinationNetwork'])
log.debug("allocated bandwidths table : " +
str(self.allocated_bandwidths))
def sendFlowMod():
global globalEvent
log.debug("sending throttle message")
msg = of.ofp_flow_mod()
msg.priority = 100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_src = "10.0.0.1"
msg.match.nw_dst = "10.0.0.2"
msg.actions.append(of.ofp_action_enqueue(port=2,
queue_id=1)) #port 2 = eth2
globalEvent.connection.send(msg)
def add_flow(ev, ipsrc, ipdst):
inport = 0
if str(ipsrc).rsplit('.', 1)[0] == "10.0.0" and str(ipdst).rsplit(
'.', 1)[0] == "10.0.1":
inport = 6
elif str(ipsrc).rsplit('.', 1)[0] == "10.0.0" and str(ipdst).rsplit(
'.', 1)[0] == "10.0.2":
inport = 7
elif str(ipsrc).rsplit('.', 1)[0] == "10.0.1" and str(ipdst).rsplit(
'.', 1)[0] == "10.0.0":
inport = 6
elif str(ipsrc).rsplit('.', 1)[0] == "10.0.1" and str(ipdst).rsplit(
'.', 1)[0] == "10.0.2":
inport = 7
elif str(ipsrc).rsplit('.', 1)[0] == "10.0.2" and str(ipdst).rsplit(
'.', 1)[0] == "10.0.0":
inport = 6
elif str(ipsrc).rsplit('.', 1)[0] == "10.0.2" and str(ipdst).rsplit(
'.', 1)[0] == "10.0.1":
inport = 7
msg = of.ofp_flow_mod()
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_src = ipsrc
msg.match.nw_dst = ipdst
if str(ipdst).rsplit('.', 1)[1] == "1" or str(ipdst).rsplit('.',
1)[1] == "2":
msg.actions.append(of.ofp_action_enqueue(port=inport, queue_id=1))
elif str(ipdst).rsplit('.', 1)[1] == "3" or str(ipdst).rsplit('.',
1)[1] == "4":
msg.actions.append(of.ofp_action_enqueue(port=inport, queue_id=2))
elif str(ipdst).rsplit('.', 1)[1] == "5":
msg.actions.append(of.ofp_action_enqueue(port=inport, queue_id=3))
ev.connection.send(msg)
def _handle_PacketIn (event):
global s1_dpid, s2_dpid
#print("payload:"+str(dir(event.parsed.payload)))
#print("event.con:"+str(event.connection))
#print("hwdst:"+str(event.parsed.payload.hwdst))
switch_id = event.connection.dpid
print "switch_id:"
print switch_id
packet = event.parsed
(pckt_srcip, hasARP) = getSrcIPandARP(packet.next)
if pckt_srcip is None:
pckt_srcip = "10.0.0.0"
#print("Pckt_srcip:"+str(pckt_srcip))
#self.updateIPInfo(pckt_srcip,macEntry,hasARP)
print("pckt_srcip is NONE and is set to 10.0.0.0!")
inTable[(event.connection,packet.src)] = event.port
dst_port = inTable.get((event.connection,packet.dst))
#print('came into handle_packetin')
if dst_port is None:
# We don't know where the destination is yet. So, we'll just
# send the packet out all ports (except the one it came in on!)
# and hope the destination is out there somewhere. :)
msg = of.ofp_packet_out(data = event.ofp)
msg.actions.append(of.ofp_action_output(port = all_ports))
event.connection.send(msg)
else:
# Since we know the switch ports for both the source and dest
# MACs, we can install rules for both directions.
msg = of.ofp_flow_mod()
msg.match.dl_dst = packet.src
msg.match.dl_src = packet.dst
msg.actions.append(of.ofp_action_output(port = event.port))
event.connection.send(msg)
# This is the packet that just came in -- we want to
# install the rule and also resend the packet.
msg = of.ofp_flow_mod()
msg.data = event.ofp # Forward the incoming packet
msg.match.dl_src = packet.src
msg.match.dl_dst = packet.dst
#msg.actions.append(of.ofp_action_output(port = dst_port))
#ipv4_packet = event.parsed.find("ipv4")
#if ipv4_packet is None:
# print("ipv4 none")
#ipv4_src_ip = ipv4_packet.srcip
#print("ipv4 src ip :"+str(ipv4_src_ip))
msg.actions.append(of.ofp_action_enqueue(port = dst_port, queue_id=getQidFromMatrix(str(pckt_srcip),switch_id-1))) #switch id -1 because it is the index in the matrix for that switch
print("Msg sent to Switch "+str(event.connection.dpid)+": Port"+str(dst_port)+", Queue"+str(getQidFromMatrix(str(pckt_srcip),switch_id-1)))
#print("srcip:"+str(packet.src))
event.connection.send(msg)
log.debug("Installing %s <-> %s" % (packet.src, packet.dst))
pass
def handleFlowsRedirection(self, dpid, connections, switchAddress,
message):
print 'message from ' + str(switchAddress)
print 'Connections ' + str(dir(connections))
dpid = dpid[:len(dpid) - 1]
dpid = dpid[len(dpid) - 12:]
print 'Received dpid: ' + str(dpid)
print "message to be used for redirection" + str(message)
for i in range(len(message['Flowlist'])):
# We only want to redirect outgoing flows
if message['Flowlist'][i]['action'] != 'LOCAL':
#my_match = of.ofp_match(nw_src=message['Flowlist'][i]['nw_src'],nw_dst=message['Flowlist'][i]['nw_dst'])
my_match = of.ofp_match(
dl_type=0x800,
nw_src=message['Flowlist'][i]['nw_src'],
nw_dst=message['Flowlist'][i]['nw_dst'])
print "Flow Match: " + str(my_match)
msg = of.ofp_flow_mod()
msg.match = my_match
msg.priority = 65535
# There is a bug here, the error it shows reads "can't convert argument to int" when try to send the message
# If the actions are omitted (aka we order to drop the packets with match, we get no error)
msg.actions.append(
of.ofp_action_enqueue(
port=int(
message['Flowlist'][i]['action'].split(':')[1]),
queue_id=int(message['QueueList'][i]['queueId'])))
print "Flow mod message: " + str(msg)
#toDo: Check a better way to do this
print "dpid parameter: " + str(dpid)
for connection in connections:
connectionDpid = connection.dpid
print "Connection dpid: " + str(connectionDpid)
dpidStr = dpidToStr(connectionDpid)
dpidStr = dpidStr.replace("-", "")
print 'Real dpidStr: ' + dpidStr
if dpid == dpidStr:
connection.send(msg)
print 'Sent to: ' + str(connection)
print 'Well...done'
def install_enqueue(event, packet, outport, q_id):
log.debug("** Switch %i: Installing flow %s.%i -> %s.%i", dpid,
src_mac, inport, dst_mac, outport)
msg = of.ofp_flow_mod()
msg.match = of.ofp_match.from_packet(packet, inport)
msg.priority = QOS_PRIORITY
msg.actions.append(
of.ofp_action_enqueue(port=outport, queue_id=q_id))
msg.data = event.ofp
msg.idle_timeout = IDLE_TTL
msg.hard_timeout = HARD_TTL
event.connection.send(msg)
log.debug("** Switch %i: Rule sent: Outport %i, Queue %i", dpid,
outport, q_id)
return
def take_action(self, packet, msg, event, port):
if packet.find("ipv4") is not None \
and (packet.find("tcp") is not None or packet.find("udp") is not None):
if packet.find("tcp") is not None:
transport_type = "tcp"
else:
transport_type = "udp"
transport = packet.find(transport_type)
transport_srcport = transport.srcport
transport_dstport = transport.dstport
src_mac = packet.src
dst_mac = packet.dst
ip_packet = packet.find("ipv4")
src_ip = ip_packet.srcip
dst_ip = ip_packet.dstip
msg.match = of.ofp_match.from_packet(packet, event.port)
action = self.get_action(transport_type, transport_srcport, transport_dstport, src_mac, dst_mac, src_ip, dst_ip)
print action
if action == "DP":
None
elif action == "HP":
msg.actions.append(of.ofp_action_enqueue(port=port, queue_id=0))
else:
msg.actions.append(of.ofp_action_enqueue(port=port, queue_id=1))
else:
msg.match = of.ofp_match.from_packet(packet, event.port)
msg.actions.append(of.ofp_action_output(port=port))
msg.data = event.ofp
self.connection.send(msg)
def _match_action(self,msg):
if len(self.actions) == 1 and self.actions[0] == "" :
return
for action in self.actions:
action_name = action.split('=')[0]
if action_name != "STRIP_VLAN":
action_argu = action.split('=')[1]
if(action_name == "OUTPUT"):
msg.actions.append(of.ofp_action_output(port = int(action_argu)))
elif(action_name == "ENQUEUE"):
port = action_argu.split(':')[0]
queue_id = action_argu.split(':')[1]
msg.actions.append(of.ofp_action_enqueue(port = int(port) , queue_id = int(queue_id)))
elif(action_name == "STRIP_VLAN"):
msg.actions.append(of.ofp_action_strip_vlan())
elif(action_name == "SET_VLAN_VID"):
msg.actions.append(of.ofp_action_vlan_vid(vlan_vid = int(action_argu)))
elif(action_name == "SET_VLAN_PCP"):
msg.actions.append(of.ofp_action_vlan_pcp(vlan_pcp = int(action_argu)))
elif(action_name == "SET_DL_SRC"):
msg.actions.append(of.ofp_action_dl_addr(type = 4 , dl_addr = EthAddr(action_argu)))
elif(action_name == "SET_DL_DST"):
msg.actions.append(of.ofp_action_dl_addr(type = 5 , dl_addr = EthAddr(action_argu)))
elif(action_name == "SET_NW_TOS"):
msg.actions.append(of.ofp_action_nw_tos(nw_tos = int(action_argu)))
elif(action_name == "SET_NW_SRC"):
msg.actions.append(of.ofp_action_nw_addr(type = 6 , nw_addr = IPAddr(action_argu)))
elif(action_name == "SET_NW_DST"):
msg.actions.append(of.ofp_action_nw_addr(type = 7 , nw_addr = IPAddr(action_argu)))
elif(action_name == "SET_TP_SRC"):
msg.actions.append(of.ofp_action_tp_port(type = 9 , tp_port = int(action_argu)))
elif(action_name == "SET_TP_DST"):
msg.actions.append(of.ofp_action_tp_port(type = 10 , tp_port = int(action_argu)))
def enqueue_mac(self,
priority,
idle,
hard,
classifier,
dstMAC,
port,
queue,
srcMAC=None,
data=None):
msg = of.ofp_flow_mod()
msg.data = data
msg.priority = priority
msg.idle_timeout = idle
msg.hard_timeout = hard
msg.match = of.ofp_match(dl_dst=dstMAC)
msg.actions.append(of.ofp_action_enqueue(port=port, queue_id=queue))
self.connection.send(msg)
def handle_flows_redirection(cls, dpid, connections, switch_addresss, message):
""" Sends flow mod messages to redirect flows to created queues """
dpid = dpid[:len(dpid)-1]
dpid = dpid[len(dpid)-12:]
msg = of.ofp_flow_mod(command=of.OFPFC_DELETE)
msg.priority = 65535
cls.send_command_to_switch(dpid, connections, msg)
for i in range(len(message['bw_list'])):
# We only want to redirect outgoing flows
if message['bw_list'][i]['action'] != 'OFPP_LOCAL':
my_match = of.ofp_match(dl_type = 0x800,nw_src=message['bw_list'][i]['nw_src'],nw_dst=message['bw_list'][i]['nw_dst'])
msg = of.ofp_flow_mod()
msg.match = my_match
msg.priority = 65535
msg.idle_timeout = 60
#msg.hard_timeout = 0
msg.actions.append(of.ofp_action_enqueue(port=int(message['bw_list'][i]['action']), queue_id=int(message['queue_list'][i]['queueId'])))
for connection in connections:
connection_dpid=connection.dpid
dpid_str=dpidToStr(connection_dpid)
dpid_str=dpid_str.replace("-", "")
if dpid == dpid_str:
connection.send(msg)
global flow_mod_time
flow_mod_time = time.time() - queues_done_time
#print "Notification time: " + str(notification_time)
#print "Flow stats reply: " + str(flow_stats_reply_time)
#print "Queues done time: " + str(queues_done_time)
#print "Flow mode time :" + str(flow_mod_time)
#if len(message['bw_list']) > capacity/min_sla:
if len(message['bw_list']) > capacity/min_sla:
self.handle_queues_full(dpid, connections, switch_addresss, message)
def push_flow_label_bandwidth(self, source_ip, dest_ip, out_port, timeout,
bandwidth_this, destination_network, rid):
output_interface = self.port_to_interface[out_port]
msg = of.ofp_flow_mod()
msg.idle_timeout = 0
msg.hard_timeout = timeout
msg.match.dl_type = ethernet.IP_TYPE
#msg.match.nw_proto = ipv4.ICMP_PROTOCOL
msg.match.nw_src = IPAddr(source_ip)
#if dest_ip == "10.0.2.100":
# print "The flow that's going to be added must match source ip ("+source_ip+") too along with destination ip "+dest_ip
# msg.match.nw_src = IPAddr(source_ip)
#else:
# print "source_ip match constraint not added"
#I SUSPECT MATCHING THIS ENTIRE NETWORK RANGE AND APPENDING A SINGLE MAC ID FOR THE FLOW IS WRONG. DEBUG FROM HERE
msg.match.nw_dst = IPAddr(dest_ip)
# msg.match.nw_dst = IPAddr(srcip)
msg.actions.append(
of.ofp_action_dl_addr.set_src(
EthAddr(self.arp_table[self.routing_table[destination_network]
['RouterInterface']])))
msg.actions.append(
of.ofp_action_dl_addr.set_dst(EthAddr(self.arp_table[dest_ip])))
msg.actions.append(
of.ofp_action_enqueue(
port=out_port,
queue_id=self.bandwidth_to_queue[bandwidth_this]))
self.connection.send(msg)
print "\n#Starting thread to keep track of connection time#"
t1 = threading.Thread(target=timer,
args=(timeout, bandwidth_this, rid))
t1.start()
self.allocated_bandwidths[output_interface][source_ip] = {
'dest_ip': dest_ip,
'bandwidth': self.bandwidth_to_queue[bandwidth_this]
} #queueno denotes bandwidth
def packetForwarding():
queueId = 2
if packet.type == packet.ARP_TYPE:
srcIp = str(packet.payload.protosrc)
dstIp = str(packet.payload.protodst)
elif packet.type == packet.IP_TYPE:
srcIp = str(packet.payload.srcip)
dstIp = str(packet.payload.dstip)
if packet.next.protocol == packet.next.TCP_PROTOCOL:
dstPort = str(packet.next.payload.dstport)
if checkFirewallRules(srcIp, dstIp, dstPort):
return
if checkPremiumPolicies(dstIp) | checkPremiumPolicies(srcIp):
log.info("premium")
queueId = 1
if dpid not in self.forwardingTable:
self.forwardingTable[dpid] = {}
self.forwardingTable[dpid][src] = {}
self.forwardingTable[dpid][src]["port"] = inport
self.forwardingTable[dpid][src][
"timestamp"] = datetime.datetime.now()
if dst in self.forwardingTable[dpid]:
if (datetime.datetime.now() -
self.forwardingTable[dpid][dst]["timestamp"]
).total_seconds() > 30:
self.forwardingTable[dpid].pop(dst)
if dst not in self.forwardingTable[dpid]:
flood()
return
log.info("queueID: %s", queueId)
outport = self.forwardingTable[dpid][dst]["port"]
log.info("# S%i: Message sent: Outport %i src %s inport %s\n",
dpid, outport, src, inport)
msg = of.ofp_flow_mod()
msg.data = event.ofp
msg.match = of.ofp_match.from_packet(packet, inport)
msg.priority = 1000
# msg.actions.append(of.ofp_action_output(port = outport))
msg.actions.append(
of.ofp_action_enqueue(port=outport, queue_id=queueId))
event.connection.send(msg)
def handleFlowsRedirection(self, dpid, connections, switchAddress, message):
print 'message from ' + str(switchAddress)
print 'Connections ' + str(dir(connections))
dpid = dpid[:len(dpid)-1]
dpid = dpid[len(dpid)-12:]
print 'Received dpid: ' + str(dpid)
print "message to be used for redirection" + str(message)
for i in range(len(message['Flowlist'])):
# We only want to redirect outgoing flows
if message['Flowlist'][i]['action'] != 'LOCAL':
#my_match = of.ofp_match(nw_src=message['Flowlist'][i]['nw_src'],nw_dst=message['Flowlist'][i]['nw_dst'])
my_match = of.ofp_match(dl_type = 0x800,nw_src=message['Flowlist'][i]['nw_src'],nw_dst=message['Flowlist'][i]['nw_dst'])
print "Flow Match: " + str(my_match)
msg = of.ofp_flow_mod()
msg.match = my_match
msg.priority=65535
# There is a bug here, the error it shows reads "can't convert argument to int" when try to send the message
# If the actions are omitted (aka we order to drop the packets with match, we get no error)
msg.actions.append(of.ofp_action_enqueue(port=int(message['Flowlist'][i]['action'].split(':')[1]), queue_id=int(message['QueueList'][i]['queueId'])))
print "Flow mod message: " + str(msg)
#toDo: Check a better way to do this
print "dpid parameter: " + str(dpid)
for connection in connections:
connectionDpid=connection.dpid
print "Connection dpid: " + str(connectionDpid)
dpidStr=dpidToStr(connectionDpid)
dpidStr=dpidStr.replace("-", "")
print 'Real dpidStr: ' + dpidStr
if dpid == dpidStr:
connection.send(msg)
print 'Sent to: ' + str(connection)
print 'Well...done'
def _match_action(self,msg):
if(self.actions == "OUTPUT"):
msg.actions.append(of.ofp_action_output(port = int(self.actions_argu)))
elif(self.actions == "enqueue"):
port = self.actions_argu.split(':')[0]
queue_id = self.actions_argu.split(':')[1]
msg.actions.append(of.ofp_action_enqueue(port = int(port) , queue_id = int(queue_id)))
elif(self.actions == "strip-vlan"):
msg.actions.append(of.ofp_action_strip_vlan())
elif(self.actions == "set-vlan-id"):
msg.actions.append(of.ofp_action_vlan_vid(vlan_vid = int(self.actions_argu)))
elif(self.actions == "set-vlan-priority"):
msg.actions.append(of.ofp_action_vlan_pcp(vlan_pcp = int(self.actions_argu)))
elif(self.actions == "SET_DL_SRC"):
msg.actions.append(of.ofp_action_dl_addr(type = 4 , dl_addr = EthAddr(self.actions_argu)))
elif(self.actions == "SET_DL_DST"):
msg.actions.append(of.ofp_action_dl_addr(type = 5 , dl_addr = EthAddr(self.actions_argu)))
elif(self.actions == "SET_NW_TOS"):
msg.actions.append(of.ofp_action_nw_tos(nw_tos = int(self.actions_argu)))
elif(self.actions == "SET_NW_SRC"):
msg.actions.append(of.ofp_action_nw_addr(type = 6 , nw_addr = IPAddr(self.actions_argu)))
elif(self.actions == "SET_NW_DST"):
msg.actions.append(of.ofp_action_nw_addr(type = 7 , nw_addr = IPAddr(self.actions_argu)))
elif(self.actions == "SET_TP_SRC"):
msg.actions.append(of.ofp_action_tp_port(type = 9 , tp_port = int(self.actions_argu)))
elif(self.actions == "SET_TP_DST"):
msg.actions.append(of.ofp_action_tp_port(type = 10 , tp_port = int(self.actions_argu)))
def install_enqueue():
q_id = 2 #default free user
if self.user_queue.get(src_ip) != None and self.user_queue.get(
dst_ip) != None:
q_id = max(self.user_queue[src_ip], self.user_queue[dst_ip])
elif self.user_queue.get(dst_ip) != None:
q_id = self.user_queue[dst_ip]
elif self.user_queue.get(src_ip) != None:
q_id = self.user_queue[src_ip]
log.debug(
"\nPutting packet of source {} destination {} into queue {}".
format(src_ip, dst_ip, q_id))
msg = of.ofp_flow_mod()
msg.priority = 50 # lower than firewall
msg.data = ofMsg
msg.hard_timeout = 5
msg.match = of.ofp_match.from_packet(packet, in_port)
msg.actions.append(
of.ofp_action_enqueue(port=self.macMap[dpid][dst_mac],
queue_id=q_id))
event.connection.send(msg)
def _handle_PacketIn(event):
global s1_dpid, s2_dpid
print "PacketIn: ", dpidToStr(event.connection.dpid)
if event.connection.dpid == s1_dpid:
msg = of.ofp_flow_mod()
msg.priority = 1
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0806
msg.actions.append(of.ofp_action_output(port=of.OFPP_ALL))
print "broadcast"
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority = 100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_src = "10.0.0.1"
msg.match.nw_dst = "10.0.0.2"
msg.actions.append(of.ofp_action_enqueue(port=4, queue_id=1))
print "Enqueue to port 4 qid 1"
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority = 100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_src = "10.0.0.2"
msg.match.nw_dst = "10.0.0.4"
msg.actions.append(of.ofp_action_enqueue(port=4, queue_id=2))
print "Enqueue to port 4 qid 2"
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority = 10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.1"
msg.actions.append(of.ofp_action_output(port=1))
print "output to port 1"
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority = 10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.2"
msg.actions.append(of.ofp_action_output(port=2))
print "output to port 2"
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority = 10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.3"
msg.actions.append(of.ofp_action_output(port=3))
print "output to port 3"
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority = 10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.4"
msg.actions.append(of.ofp_action_output(port=4))
print "output to port 4"
event.connection.send(msg)
elif event.connection.dpid == s2_dpid:
msg = of.ofp_flow_mod()
msg.priority = 1
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.in_port = 1
msg.actions.append(of.ofp_action_output(port=2))
print "output to port 2"
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority = 1
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.in_port = 2
msg.actions.append(of.ofp_action_output(port=1))
print "output to port 1"
event.connection.send(msg)
def _handle_PacketIn (self, event):
"""
Handle packet in messages from the switch to implement above algorithm.
"""
packet = event.parsed
def flood (message = None):
""" Floods the packet """
msg = of.ofp_packet_out()
if time.time() - self.connection.connect_time >= _flood_delay:
# Only flood if we've been connected for a little while...
if self.hold_down_expired is False:
# Oh yes it is!
self.hold_down_expired = True
log.info("%s: Flood hold-down expired -- flooding",
dpid_to_str(event.dpid))
if message is not None: log.debug(message)
#log.debug("%i: flood %s -> %s", event.dpid,packet.src,packet.dst)
# OFPP_FLOOD is optional; on some switches you may need to change
# this to OFPP_ALL.
msg.actions.append(of.ofp_action_output(port = of.OFPP_FLOOD))
else:
pass
#log.info("Holding down flood for %s", dpid_to_str(event.dpid))
msg.data = event.ofp
msg.in_port = event.port
self.connection.send(msg)
def drop (duration = None):
"""
Drops this packet and optionally installs a flow to continue
dropping similar ones for a while
"""
if duration is not None:
if not isinstance(duration, tuple):
duration = (duration,duration)
msg = of.ofp_flow_mod()
msg.match = of.ofp_match.from_packet(packet)
msg.idle_timeout = duration[0]
msg.hard_timeout = duration[1]
msg.buffer_id = event.ofp.buffer_id
self.connection.send(msg)
elif event.ofp.buffer_id is not None:
msg = of.ofp_packet_out()
msg.buffer_id = event.ofp.buffer_id
msg.in_port = event.port
self.connection.send(msg)
self.macToPort[packet.src] = event.port # 1
if not self.transparent: # 2
if packet.type == packet.LLDP_TYPE or packet.dst.isBridgeFiltered():
drop() # 2a
return
if packet.dst.is_multicast:
flood() # 3a
else:
if packet.dst not in self.macToPort: # 4
flood("Port for %s unknown -- flooding" % (packet.dst,)) # 4a
else:
port = self.macToPort[packet.dst]
if port == event.port: # 5
# 5a
log.warning("Same port for packet from %s -> %s on %s.%s. Drop."
% (packet.src, packet.dst, dpid_to_str(event.dpid), port))
drop(10)
return
#if msg.match.tp_src == 5001 or msg.match.tp_dst == 5001:
# msg.actions.append(of.ofp_action_enqueue(port = port,queue_id=1))
# return
# 6
log.debug("installing flow for %s.%i -> %s.%i" %
(packet.src, event.port, packet.dst, port))
msg = of.ofp_flow_mod()
msg.match = of.ofp_match.from_packet(packet, event.port)
msg.idle_timeout = 10
msg.hard_timeout = 30
if msg.match.tp_src == int(x) or msg.match.tp_dst == int(x):
msg.actions.append(of.ofp_action_enqueue(port = port,queue_id=1))
else:
msg.actions.append(of.ofp_action_output(port = port))
msg.data = event.ofp # 6a
self.connection.send(msg)
def _modify_flow(self,command_type):
msg = of.ofp_flow_mod()
print self.payload
if command_type == "MOD_ST":
msg.command = of.OFPFC_MODIFY_STRICT
elif command_type == "MOD":
msg.command = of.OFPFC_MODIFY
if self.payload.has_key("wildcards"):
msg.match.wildcards = int(self.payload['wildcards'])
if self.payload.has_key("dstIP"):
msg.match.nw_dst = IPAddr(self.payload['dstIP'])
if self.payload.has_key("srcMac"):
msg.match.dl_src = EthAddr(self.payload['srcMac'])
if self.payload.has_key("srcIP"):
msg.match.nw_src = IPAddr(self.payload['srcIP'])
if self.payload.has_key("dstMac"):
msg.match.dl_dst = EthAddr(self.payload['dstMac'])
if self.payload.has_key("hardTimeout"):
msg.hard_timeout = int(self.payload['hardTimeout'])
if self.payload.has_key("srcPort"):
msg.match.tp_src = int(self.payload['srcPort'])
if self.payload.has_key("priority"):
msg.priority = int(self.payload['priority'])
if self.payload.has_key("ingressPort"):
msg.match.in_port = int(self.payload['ingressPort'])
if self.payload.has_key("vlan"):
msg.match.dl_vlan = int(self.payload['vlan'])
if self.payload.has_key("ether-type"):
msg.match.dl_type = int(self.payload['ether-type'])
if self.payload.has_key("duration"):
msg.duration_sec = int(self.payload['duration'])
if self.payload.has_key("idleTimeout"):
msg.idle_timeout = int(self.payload['idleTimeout'])
if self.payload.has_key("netProtocol"):
msg.match.nw_proto = int(self.payload['netProtocol'])
self.dpid = self.payload['switch'].replace(':','-')[6:]
self._parse_actions(self.payload['actions'])
for connection in core.openflow._connections.values() :
# print dpidToStr(connection.dpid)
conn_dpid = str(dpidToStr(connection.dpid))
print conn_dpid
if conn_dpid == self.dpid:
"""match actions"""
if(self.actions == "OUTPUT"):
msg.actions.append(of.ofp_action_output(port = int(self.actions_argu)))
elif(self.actions == "enqueue"):
port = self.actions_argu.split(':')[0]
queue_id = self.actions_argu.split(':')[1]
msg.actions.append(of.ofp_action_enqueue(port = int(port) , queue_id = int(queue_id)))
elif(self.actions == "strip-vlan"):
msg.actions.append(of.ofp_action_strip_vlan())
elif(self.actions == "set-vlan-id"):
msg.actions.append(of.ofp_action_vlan_vid(vlan_vid = int(self.actions_argu)))
elif(self.actions == "set-vlan-priority"):
msg.actions.append(of.ofp_action_vlan_pcp(vlan_pcp = int(self.actions_argu)))
elif(self.actions == "SET_DL_SRC"):
msg.actions.append(of.ofp_action_dl_addr(type = 4 , dl_addr = EthAddr(self.actions_argu)))
elif(self.actions == "SET_DL_DST"):
msg.actions.append(of.ofp_action_dl_addr(type = 5 , dl_addr = EthAddr(self.actions_argu)))
elif(self.actions == "SET_NW_TOS"):
msg.actions.append(of.ofp_action_nw_tos(nw_tos = int(self.actions_argu)))
elif(self.actions == "SET_NW_SRC"):
msg.actions.append(of.ofp_action_nw_addr(type = 6 , nw_addr = IPAddr(self.actions_argu)))
elif(self.actions == "SET_NW_DST"):
msg.actions.append(of.ofp_action_nw_addr(type = 7 , nw_addr = IPAddr(self.actions_argu)))
elif(self.actions == "SET_TP_SRC"):
msg.actions.append(of.ofp_action_tp_port(type = 9 , tp_port = int(self.actions_argu)))
elif(self.actions == "SET_TP_DST"):
msg.actions.append(of.ofp_action_tp_port(type = 10 , tp_port = int(self.actions_argu)))
connection.send(msg)
def reply_request(self, success, request_id, event, title_aggr=None, w = None):
# Build the response
resp_msg = dts_pb2.ControlResponse()
resp_msg.status = resp_msg.SUCCESS if success else resp_msg.FAILURE
if request_id != None:
resp_msg.request_id = request_id
if self.aggr and w: # reply for the second workspace attachment
print 'title_aggr', title_aggr, 'flow', self.flow
# Send FLOW_MOD to the swith that is ataching an entity
title = w.title
if title_aggr in workspaces_aggr:
w2 = workspaces_aggr[title_aggr]
else:
log.info('Unknown aggregated workspace title')
title_hash = hashlib.sha256(title).digest()[:12]
title_hash_aggr = hashlib.sha256(title_aggr).digest()[:12]
recvRule = of.ofp_flow_mod()
recvRule.command = of.OFPFC_MODIFY_STRICT
#recvRule.match.dl_type = 0x0880 # Causes conflicts with user-space switches
recvRule.match.dl_dst = title_hash_aggr[:6]
recvRule.match.dl_src = title_hash_aggr[6:]
recvRule.match.dl_vlan = self.flow
recvRule.actions.append(of.ofp_action_dl_addr.set_dst(title_hash[:6]))
recvRule.actions.append(of.ofp_action_dl_addr.set_src(title_hash[6:]))
recvRule.actions.append(of.ofp_action_enqueue(port=event.port, queue_id=1))
core.openflow.sendToDPID(event.dpid, recvRule)
try:
s = w.switches[event.dpid]
except KeyError:
s = w.WPSwitch(event.dpid)
w.switches[s.dpid] = s
if event.dpid == w2.path[-1]:
s.used_ports.add(graph[w2.path[-1]][w2.path[w2.path.index(w2.path[-1])-1]]['ports'][w2.path[-1]])
else:
s.used_ports.add(graph[w2.path[0]][w2.path[w2.path.index(w2.path[0])+1]]['ports'][w2.path[0]])
sendRule = of.ofp_flow_mod()
sendRule.command = of.OFPFC_MODIFY_STRICT
#sendRule.match.dl_type = 0x0880 # Causes conflicts with user-space switches
sendRule.match.dl_dst = title_hash[:6]
sendRule.match.dl_src = title_hash[6:]
sendRule.actions.append(of.ofp_action_dl_addr.set_dst(title_hash_aggr[:6]))
sendRule.actions.append(of.ofp_action_dl_addr.set_src(title_hash_aggr[6:]))
sendRule.actions.append(of.ofp_action_vlan_vid(vlan_vid=self.flow))
for p in s.used_ports:
sendRule.actions.append(of.ofp_action_enqueue(port=p, queue_id=1))
core.openflow.sendToDPID(event.dpid, sendRule)
# Send FLOW_MOD to the switch that created the workspace
switch1 = wks[w.title]
print 'OZUUUUUU1', switch1.dpid, switch1.port,
try:
s = w.switches[switch1.dpid]
except KeyError:
s = w.WPSwitch(switch1.dpid)
w.switches[s.dpid] = s
if switch1.dpid == w2.path[0]:
s.used_ports.add(graph[w2.path[0]][w2.path[w2.path.index(w2.path[0])+1]]['ports'][w2.path[0]])
else:
s.used_ports.add(graph[w2.path[-1]][w2.path[w2.path.index(w2.path[-1])-1]]['ports'][w2.path[-1]])
sendRule = of.ofp_flow_mod()
sendRule.command = of.OFPFC_MODIFY_STRICT
#sendRule.match.dl_type = 0x0880 # Causes conflicts with user-space switches
sendRule.match.dl_dst = title_hash[:6]
sendRule.match.dl_src = title_hash[6:]
sendRule.actions.append(of.ofp_action_dl_addr.set_dst(title_hash_aggr[:6]))
sendRule.actions.append(of.ofp_action_dl_addr.set_src(title_hash_aggr[6:]))
sendRule.actions.append(of.ofp_action_vlan_vid(vlan_vid=self.flow))
for p in s.used_ports:
sendRule.actions.append(of.ofp_action_enqueue(port=p, queue_id=1))
core.openflow.sendToDPID(switch1.dpid, sendRule)
recvRule = of.ofp_flow_mod()
recvRule.command = of.OFPFC_MODIFY_STRICT
#recvRule.match.dl_type = 0x0880 # Causes conflicts with user-space switches
recvRule.match.dl_dst = title_hash_aggr[:6]
recvRule.match.dl_src = title_hash_aggr[6:]
recvRule.match.dl_vlan = self.flow
recvRule.actions.append(of.ofp_action_dl_addr.set_dst(title_hash[:6]))
recvRule.actions.append(of.ofp_action_dl_addr.set_src(title_hash[6:]))
recvRule.actions.append(of.ofp_action_enqueue(port=event.port, queue_id=1))
core.openflow.sendToDPID(switch1.dpid, recvRule)
resp_msg = resp_msg.SerializeToString()
# Send response back to the entity
resp = of.ofp_packet_out()
if not self.wifi: # not wifi
resp.data = ''.join((DTSA.HEADER, struct.pack("<H", len(resp_msg)), resp_msg))
else:
resp.data = ''.join((self.addrResp, struct.pack("<H", len(resp_msg)), resp_msg))
resp.actions.append(of.ofp_action_output(port = event.port))
event.connection.send(resp)
def _handle_PacketIn(self, event):
dpid = event.connection.dpid
inport = event.port
packet = event.parsed
if not packet.parsed:
log.warning("%i %i ignoring unparsed packet", dpid, inport)
return
if dpid not in self.arpTable:
# New switch -- create an empty table
self.arpTable[dpid] = {}
# Cria uma tabela vazia para registro de disponibilidade de QoS
self.hasQoS[dpid] = {}
for fake in self.fakeways:
self.arpTable[dpid][IPAddr(fake)] = Entry(
of.OFPP_NONE, dpid_to_mac(dpid))
if packet.type == ethernet.LLDP_TYPE:
# Ignore LLDP packets
return
if isinstance(packet.next, ipv4):
log.debug("%i %i IP %s => %s", dpid, inport, packet.next.srcip,
packet.next.dstip)
# Send any waiting packets...
self._send_lost_buffers(dpid, packet.next.srcip, packet.src,
inport)
# Learn or update port/MAC info
if packet.next.srcip in self.arpTable[dpid]:
if self.arpTable[dpid][packet.next.srcip] != (inport,
packet.src):
log.info("%i %i RE-learned %s", dpid, inport,
packet.next.srcip)
else:
log.debug("%i %i learned %s", dpid, inport,
str(packet.next.srcip))
self.arpTable[dpid][packet.next.srcip] = Entry(inport, packet.src)
# Try to forward
dstaddr = packet.next.dstip
if dstaddr in self.arpTable[dpid]:
# We have info about what port to send it out on...
prt = self.arpTable[dpid][dstaddr].port
mac = self.arpTable[dpid][dstaddr].mac
if prt == inport:
log.warning(
"%i %i not sending packet for %s back out of the " +
"input port" % (dpid, inport, str(dstaddr)))
else:
log.debug(
"%i %i installing flow for %s => %s out port %i" %
(dpid, inport, packet.next.srcip, dstaddr, prt))
actions = []
actions.append(of.ofp_action_dl_addr.set_dst(mac))
actions.append(of.ofp_action_output(port=prt))
match = of.ofp_match.from_packet(packet, inport)
match.dl_src = None # Wildcard source MAC
msg = of.ofp_flow_mod(command=of.OFPFC_ADD,
idle_timeout=FLOW_IDLE_TIMEOUT,
hard_timeout=of.OFP_FLOW_PERMANENT,
buffer_id=event.ofp.buffer_id,
actions=actions,
match=of.ofp_match.from_packet(
packet, inport))
event.connection.send(msg.pack())
##########################################################################################################
########################################### Instrucoes QoS ###############################################
##########################################################################################################
net = packet.next
transp = packet.next.next
# Realiza o mapeamento inicial entre IP, porta e QoS (-1)
if net.protocol == 6 and transp.dstport == SERVER_PORT:
if not self.portMap.has_key(net.srcip):
self.portMap = {net.srcip: (transp.srcport, -1)}
# Testa se o pacote eh UDP (troca de mensagens RSVP)
if net.protocol == 17:
# Testa se a mensagem eh RSVP originada pelo cliente
if transp.srcport == RSVP_CLIENT_PORT:
# Testa se a mensagem eh RSVP RESV
if net.tos != 0:
# Atualiza a fila do mapeamento IP, porta e QoS
port, queue = self.portMap[net.srcip]
queue = (net.tos / 10) - 1
self.portMap[net.srcip] = (port, queue)
# Consulta a disponibilidade de QoS na porta de saida do roteador
if not self.hasQoS[dpid].has_key(inport):
self.hasQoS[dpid][inport] = be
if self.hasQoS[dpid][inport] + classlist[
queue].pico <= TX_MAX:
log.info(
"QoS disponivel em R%d - porta %d: %d",
dpid, inport,
TX_MAX - self.hasQoS[dpid][inport])
else:
log.info(
"QoS nao disponivel - largura de banda insuficiente"
)
# Testa de a mensagem eh RSVP FIN
else:
# Exclui o mapeamento IP, porta e QoS
if self.portMap.has_key(net.srcip):
del self.portMap[net.srcip]
# Testa se a mensagem eh RSVP originada pelo servidor
if transp.srcport == RSVP_SERVER_PORT:
# Testa se a mensagem eh RSVP RESV_CONF
if net.tos != 0:
port, queue = self.portMap[net.dstip]
# Aplica QoS na porta de saida do roteador
qos = os.popen(
"ovs-vsctl list qos | grep _uuid | awk '{print $3}'"
).read().strip('\n')
os.system('ovs-vsctl set port r%d-eth%d qos=%s' %
(dpid, prt, qos))
log.info("QoS %s aplicada em R%s - porta %d", qos,
dpid, prt)
# Acrescenta a banda alocada a tabela de disponibilidade de QoS
self.hasQoS[dpid][prt] += classlist[self.portMap[
net.dstip][1]].pico
# Copia os parametros de cabecalho do pacote UDP
msg1 = of.ofp_flow_mod(command=of.OFPFC_MODIFY)
msg1.match = of.ofp_match.from_packet(
packet, inport)
# Altera os parametros de cabecalho para o futuro fluxo TCP
msg1.priority = 65535
msg1.idle_timeout = 30
msg1.hard_timeout = 120
msg1.match.nw_proto = 6
msg1.match.nw_tos = 0
msg1.match.tp_src = SERVER_PORT
msg1.match.tp_dst = port
msg1.actions.append(
of.ofp_action_enqueue(port=prt,
queue_id=queue))
# Instala a regra no roteador
event.connection.send(msg1)
log.info("Fila %d aplicada ao fluxo tp_dst %d",
queue, port)
##########################################################################################################
########################################### Instrucoes QoS ###############################################
##########################################################################################################
elif self.arp_for_unknowns:
# We don't know this destination.
# First, we track this buffer so that we can try to resend it later
# if we learn the destination, second we ARP for the destination,
# which should ultimately result in it responding and us learning
# where it is
# Add to tracked buffers
if (dpid, dstaddr) not in self.lost_buffers:
self.lost_buffers[(dpid, dstaddr)] = []
bucket = self.lost_buffers[(dpid, dstaddr)]
entry = (time.time() + MAX_BUFFER_TIME, event.ofp.buffer_id,
inport)
bucket.append(entry)
while len(bucket) > MAX_BUFFERED_PER_IP:
del bucket[0]
# Expire things from our outstanding ARP list...
self.outstanding_arps = {
k: v
for k, v in self.outstanding_arps.iteritems()
if v > time.time()
}
# Check if we've already ARPed recently
if (dpid, dstaddr) in self.outstanding_arps:
# Oop, we've already done this one recently.
return
# And ARP...
self.outstanding_arps[(dpid, dstaddr)] = time.time() + 4
r = arp()
r.hwtype = r.HW_TYPE_ETHERNET
r.prototype = r.PROTO_TYPE_IP
r.hwlen = 6
r.protolen = r.protolen
r.opcode = r.REQUEST
r.hwdst = ETHER_BROADCAST
r.protodst = dstaddr
r.hwsrc = packet.src
r.protosrc = packet.next.srcip
e = ethernet(type=ethernet.ARP_TYPE,
src=packet.src,
dst=ETHER_BROADCAST)
e.set_payload(r)
log.debug("%i %i ARPing for %s on behalf of %s" %
(dpid, inport, str(r.protodst), str(r.protosrc)))
msg = of.ofp_packet_out()
msg.data = e.pack()
msg.actions.append(of.ofp_action_output(port=of.OFPP_FLOOD))
msg.in_port = inport
event.connection.send(msg)
elif isinstance(packet.next, arp):
a = packet.next
log.debug("%i %i ARP %s %s => %s", dpid, inport, {
arp.REQUEST: "request",
arp.REPLY: "reply"
}.get(a.opcode, 'op:%i' % (a.opcode, )), str(a.protosrc),
str(a.protodst))
if a.prototype == arp.PROTO_TYPE_IP:
if a.hwtype == arp.HW_TYPE_ETHERNET:
if a.protosrc != 0:
# Learn or update port/MAC info
if a.protosrc in self.arpTable[dpid]:
if self.arpTable[dpid][a.protosrc] != (inport,
packet.src):
log.info("%i %i RE-learned %s", dpid, inport,
str(a.protosrc))
else:
log.debug("%i %i learned %s", dpid, inport,
str(a.protosrc))
self.arpTable[dpid][a.protosrc] = Entry(
inport, packet.src)
# Send any waiting packets...
self._send_lost_buffers(dpid, a.protosrc, packet.src,
inport)
if a.opcode == arp.REQUEST:
# Maybe we can answer
if a.protodst in self.arpTable[dpid]:
# We have an answer...
if not self.arpTable[dpid][
a.protodst].isExpired():
# .. and it's relatively current, so we'll reply ourselves
r = arp()
r.hwtype = a.hwtype
r.prototype = a.prototype
r.hwlen = a.hwlen
r.protolen = a.protolen
r.opcode = arp.REPLY
r.hwdst = a.hwsrc
r.protodst = a.protosrc
r.protosrc = a.protodst
r.hwsrc = self.arpTable[dpid][
a.protodst].mac
e = ethernet(type=packet.type,
src=dpid_to_mac(dpid),
dst=a.hwsrc)
e.set_payload(r)
log.debug("%i %i answering ARP for %s" %
(dpid, inport, str(r.protosrc)))
msg = of.ofp_packet_out()
msg.data = e.pack()
msg.actions.append(
of.ofp_action_output(
port=of.OFPP_IN_PORT))
msg.in_port = inport
event.connection.send(msg)
return
# Didn't know how to answer or otherwise handle this ARP, so just flood it
log.debug("%i %i flooding ARP %s %s => %s" % (dpid, inport, {
arp.REQUEST: "request",
arp.REPLY: "reply"
}.get(a.opcode, 'op:%i' %
(a.opcode, )), str(a.protosrc), str(a.protodst)))
msg = of.ofp_packet_out(
in_port=inport,
data=event.ofp,
action=of.ofp_action_output(port=of.OFPP_FLOOD))
event.connection.send(msg)
def attach(self, entity, packet=None):
if entity.title in self.entities:
return False
self.entities[entity.title] = entity
entity.workspaces[self.title] = self
self.switches2 += [entity.switch_dpid]
try:
s = self.switches[entity.switch_dpid]
except KeyError:
s = self.WPSwitch(entity.switch_dpid)
self.switches[s.dpid] = s
s.used_ports.add(entity.port)
#print 'self.switches.keys', self.switches.keys()
#print g.nodes()
if self.qos:
path = nx.shortest_path (g, self.switches2[-1], self.switches2[0], weight='cost')
strInfo = ' -> path with minimum QoS cost between %d and %d is: ' % (self.switches2[-1], self.switches2[0])
else:
path = nx.shortest_path (g, self.switches2[-1], self.switches2[0])
strInfo = ' -> shortest path between %d and %d is: ' % (self.switches2[-1], self.switches2[0])
strInfo += str(path)
log.info(strInfo)
if not self.wifi:
msg = of.ofp_flow_mod()
#msg.match.dl_type = 0x0880
msg.command = of.OFPFC_MODIFY_STRICT # of.OFPFC_MODIFY || of.OFPFC_ADD
msg.match.dl_dst = self.title_hash[:6]
msg.match.dl_src = self.title_hash[6:]
if path.__len__() > 1:
if self.bw and self.cos:
log.info(" -> enqueuing in queue , corresponding to CoS '%s'" % self.cos)
for i in path:
if i == path[-1]:
self.switches[i].used_ports.add(g[i][path[path.index(i)-1]]['ports'][i])
elif i == path[0]:
self.switches[i].used_ports.add(g[i][path[path.index(i)+1]]['ports'][i])
else:
try:
s = self.switches[i]
except KeyError:
s = self.WPSwitch(i)
self.switches[i] = s
self.switches[i].used_ports.add(g[i][path[path.index(i)+1]]['ports'][i])
self.switches[i].used_ports.add(g[i][path[path.index(i)-1]]['ports'][i])
if self.bw and self.cos:
msg.actions = [of.ofp_action_enqueue(port=p) for p in self.switches[i].used_ports] # ofp_action_enqueue(port=0, queue_id=0)
else:
print 'action_ouput'
msg.actions = [of.ofp_action_output(port=p) for p in self.switches[i].used_ports]
core.openflow.sendToDPID(i, msg)
else:
msg.actions = [of.ofp_action_output(port=p) for p in s.used_ports]
core.openflow.sendToDPID(s.dpid, msg)
else: # ============================================================================================================================== wifi
rule1 = of.ofp_flow_mod()
rule1.match.dl_dst = self.title_hash[:6]
#rule1.match.dl_type = 0x0880
rule1.command = of.OFPFC_MODIFY_STRICT
rule1.actions.append(of.ofp_action_dl_addr.set_src(self.title_hash[:6]))
rule1.actions.append(of.ofp_action_dl_addr.set_dst(EthAddr("FF:FF:FF:FF:FF:FF")))
rule2 = of.ofp_flow_mod()
rule2.match.dl_dst = EthAddr("FF:FF:FF:FF:FF:FF")
rule2.match.dl_src = self.title_hash[6:]
#rule2.match.dl_type = 0x0880
rule2.command = of.OFPFC_MODIFY_STRICT
if path.__len__() > 1:
for i in path:
if i == path[-1]:
self.switches[i].used_ports.add(g[i][path[path.index(i)-1]]['ports'][i])
elif i == path[0]:
self.switches[i].used_ports.add(g[i][path[path.index(i)+1]]['ports'][i])
for p in self.switches[i].used_ports:
rule1.actions.append(of.ofp_action_output(port=p))
core.openflow.sendToDPID(i, rule1)
else:
try:
s = self.switches[i]
except KeyError:
s = self.WPSwitch(i)
self.switches[i] = s
self.switches[i].used_ports.add(g[i][path[path.index(i)+1]]['ports'][i])
self.switches[i].used_ports.add(g[i][path[path.index(i)-1]]['ports'][i])
if self.bw and self.cos:
# print 'enqueue'
rule2.actions = [of.ofp_action_enqueue(port=p) for p in self.switches[i].used_ports] # ofp_action_enqueue(port=0, queue_id=0)
else:
rule2.actions = [of.ofp.action_output(port=p) for p in self.switches[i].used_ports]
core.openflow.sendToDPID(i, rule2)
else:
for p in s.used_ports:
rule1.actions.append(of.ofp_action_output(port=p))
core.openflow.sendToDPID(s.dpid, rule1)
rule2.actions = [of.ofp_action_output(port=p) for p in s.used_ports]
core.openflow.sendToDPID(s.dpid, rule2)
#print 'self.switches', self.switches # for debug
return True
def _match_action(self, msg):
if len(self.actions) == 1 and self.actions[0] == "":
return
for action in self.actions:
action_name = action.split('=')[0]
if action_name != "STRIP_VLAN":
action_argu = action.split('=')[1]
if (action_name == "OUTPUT"):
msg.actions.append(of.ofp_action_output(port=int(action_argu)))
elif (action_name == "ENQUEUE"):
port = action_argu.split(':')[0]
queue_id = action_argu.split(':')[1]
msg.actions.append(
of.ofp_action_enqueue(port=int(port),
queue_id=int(queue_id)))
elif (action_name == "STRIP_VLAN"):
msg.actions.append(of.ofp_action_strip_vlan())
elif (action_name == "SET_VLAN_VID"):
msg.actions.append(
of.ofp_action_vlan_vid(vlan_vid=int(action_argu)))
elif (action_name == "SET_VLAN_PCP"):
msg.actions.append(
of.ofp_action_vlan_pcp(vlan_pcp=int(action_argu)))
elif (action_name == "SET_DL_SRC"):
msg.actions.append(
of.ofp_action_dl_addr(type=4,
dl_addr=EthAddr(action_argu)))
elif (action_name == "SET_DL_DST"):
msg.actions.append(
of.ofp_action_dl_addr(type=5,
dl_addr=EthAddr(action_argu)))
elif (action_name == "SET_NW_TOS"):
msg.actions.append(
of.ofp_action_nw_tos(nw_tos=int(action_argu)))
elif (action_name == "SET_NW_SRC"):
msg.actions.append(
of.ofp_action_nw_addr(type=6, nw_addr=IPAddr(action_argu)))
elif (action_name == "SET_NW_DST"):
msg.actions.append(
of.ofp_action_nw_addr(type=7, nw_addr=IPAddr(action_argu)))
elif (action_name == "SET_TP_SRC"):
msg.actions.append(
of.ofp_action_tp_port(type=9, tp_port=int(action_argu)))
elif (action_name == "SET_TP_DST"):
msg.actions.append(
of.ofp_action_tp_port(type=10, tp_port=int(action_argu)))
def handle_flows_redirection(cls, dpid, connections, switch_addresss, message):
""" Sends flow mod messages to redirect flows to created queues """
#print "Received message for flow redirection: ", message
dpid = dpid[:len(dpid)-1]
dpid = dpid[len(dpid)-12:]
#msg = of.ofp_flow_mod(command=of.OFPFC_DELETE)
#msg.priority = 65535
#cls.send_command_to_switch(dpid, connections, msg)
#dpid_a = str(dpidToStr(event.dpid))
#dpid_str = dpid_a.replace("-", "")
switch_index = 0
# Create a new entry in our flow state table for the new flow
for i in range(len(switch_states)):
if switch_states[i]['dpid'] == dpid:
#print "found switch"
switch_index = i
for i in range(len(message['bw_list'])):
# We only want to redirect outgoing flows
if message['bw_list'][i]['action'] != 'OFPP_LOCAL':
for j in range(len(switch_states[switch_index]['flow_stats'])):
if (message['bw_list'][i]['nw_src'] == switch_states[switch_index]['flow_stats'][j]['nw_src']) and (message['bw_list'][i]['nw_dst'] == switch_states[switch_index]['flow_stats'][j]['nw_dst']):
flow_index = j
break
if ((switch_states[switch_index]['flow_stats'][flow_index]['nw_src'] == '10.1.1.3') or (switch_states[switch_index]['flow_stats'][flow_index]['nw_src'] == '10.1.1.13')):
my_match = of.ofp_match(dl_type = 0x800, \
dl_src = EthAddr(switch_states[switch_index]['flow_stats'][flow_index]['dl_src']), dl_dst = EthAddr(switch_states[switch_index]['flow_stats'][flow_index]['dl_dst']),\
nw_src = switch_states[switch_index]['flow_stats'][flow_index]['nw_src'], nw_dst = switch_states[switch_index]['flow_stats'][flow_index]['nw_dst'], \
dl_vlan = switch_states[switch_index]['flow_stats'][flow_index]['dl_vlan'], \
#in_port = switch_states[switch_index]['flow_stats'][flow_index]['in_port'], \
nw_tos = switch_states[switch_index]['flow_stats'][flow_index]['nw_tos'], nw_proto = switch_states[switch_index]['flow_stats'][flow_index]['nw_proto'], \
tp_dst = switch_states[switch_index]['flow_stats'][flow_index]['tp_dst'])
else:
my_match = of.ofp_match(dl_type = 0x800, \
dl_src = EthAddr(switch_states[switch_index]['flow_stats'][flow_index]['dl_src']), dl_dst = EthAddr(switch_states[switch_index]['flow_stats'][flow_index]['dl_dst']),\
nw_src = switch_states[switch_index]['flow_stats'][flow_index]['nw_src'], nw_dst = switch_states[switch_index]['flow_stats'][flow_index]['nw_dst'], \
dl_vlan = switch_states[switch_index]['flow_stats'][flow_index]['dl_vlan'], \
#in_port = switch_states[switch_index]['flow_stats'][flow_index]['in_port'], \
nw_tos = switch_states[switch_index]['flow_stats'][flow_index]['nw_tos'], nw_proto = switch_states[switch_index]['flow_stats'][flow_index]['nw_proto'], \
tp_src = switch_states[switch_index]['flow_stats'][flow_index]['tp_src'], tp_dst = switch_states[switch_index]['flow_stats'][flow_index]['tp_dst'])
#if ((switch_states[switch_index]['flow_stats'][flow_index]['nw_src'] == '10.1.1.3') or (switch_states[switch_index]['flow_stats'][flow_index]['nw_src'] == '10.1.1.13')):
#msg = of.ofp_flow_mod(command=of.OFPFC_DELETE)
#msg.priority = 65535
#cls.send_command_to_switch(dpid, connections, msg)
msg = of.ofp_flow_mod()
msg.match = my_match
#print "Match for flow: ", msg.match
msg.priority = 65535
msg.idle_timeout = 60
msg.actions.append(of.ofp_action_enqueue(port=int(message['bw_list'][i]['action']), queue_id=int(message['queue_list'][i]['queueId'])))
#print "Sending redirect"
cls.send_command_to_switch(dpid, connections, msg)
#if len(message['bw_list']) > capacity/min_sla:
#if len(message['bw_list']) > capacity/min_sla:
#self.handle_queues_full(dpid, connections, switch_addresss, message)
controlled = 1
def _handle_PacketIn (self, event):
# parsing the input packet
packet = event.parse()
# updating out mac to port mapping
self.macToPort[packet.src] = event.port
if packet.type == packet.LLDP_TYPE or packet.type == 0x86DD:
# Drop LLDP packets
# Drop IPv6 packets
# Send of command without actions
#log.debug("Port type is LLDP or IPv6 -- dropping")
msg = of.ofp_packet_out()
msg.buffer_id = event.ofp.buffer_id
msg.in_port = event.port
self.connection.send(msg)
return
if packet.dst not in self.macToPort:
# does not know out port
# flood the packet
# this is an ARP request/reply packet which is arriving to the switch for the first time
#log.debug("Port for %s unknown -- flooding" % (packet.dst))
msg = of.ofp_packet_out()
msg.actions.append(of.ofp_action_output(port = of.OFPP_FLOOD))
msg.buffer_id = event.ofp.buffer_id
msg.in_port = event.port
self.connection.send(msg)
else:
# The outport is known
# Thus, we can create a open flow rule
# installing Flow
outport = self.macToPort[packet.dst]
# creating openflow message
msg = of.ofp_flow_mod()
msg.match.dl_src = packet.src
msg.match.dl_dst = packet.dst
msg.idle_timeout = IDLE_TIMEOUT
msg.hard_timeout = HARD_TIMEOUT
msg.buffer_id = event.ofp.buffer_id
if packet.type == packet.IP_TYPE:
# extracting ipv4 payload from the ethernet part
ip_part = packet.find('ipv4')
#log.debug("installing flow for %s.%i -> %s.%i" % (packet.src, event.port, packet.dst, outport))
# if packet is coming from 10.0.0.3, give it queue 1 (mentioned in the topo file)
if ip_part.srcip == '10.0.0.3' or ip_part.srcip == '10.0.0.4':
log.debug("-------QUEUE 3--------");
msg.actions.append(of.ofp_action_enqueue(port = outport, queue_id = 3))
self.connection.send(msg)
return
if outport == event.port:
#log.warning("Same port for packet from %s -> %s on %s. Drop." % (packet.src, packet.dst, outport), dpidToStr(event.dpid))
return
# For any other traffic, full bandwidth can be used (queue 0)
log.debug("installing flow for %s.%i -> %s.%i" % (packet.src, event.port, packet.dst, outport))
log.debug("-------QUEUE 0--------");
msg.actions.append(of.ofp_action_enqueue(port = outport, queue_id = 0))
self.connection.send(msg)
def _handle_PacketIn(event): global s1_dpid, s2_dpid # print "PacketIn: ", dpidToStr(event.connection.dpid) # switch s1 if event.connection.dpid==s1_dpid: # Flujos para la tabla de flujos del switch flow_s1_0 = of.ofp_flow_mod() flow_s1_0.priority = 32768 # A mayor valor mas prioridad flow_s1_0.match.in_port = 1 flow_s1_0vlan_id = of.ofp_action_vlan_vid(vlan_vid = 10) flow_s1_queue1 = of.ofp_action_enqueue(port = 3, queue_id = 1) flow_s1_0.actions = [flow_s1_0vlan_id,flow_s1_queue1] flow_s1_1 = of.ofp_flow_mod() flow_s1_1.priority = 32768 # A mayor valor mas prioridad flow_s1_1.match.in_port = 2 flow_s1_1vlan_id = of.ofp_action_vlan_vid(vlan_vid = 20) flow_s1_queue2 = of.ofp_action_enqueue(port = 3, queue_id = 2) flow_s1_1.actions = [flow_s1_1vlan_id,flow_s1_queue2] flow_s1_2 = of.ofp_flow_mod() flow_s1_2.priority = 32768 # A mayor valor mas prioridad flow_s1_2.match.dl_vlan = 10 flow_s1_2stripvlan = of.ofp_action_strip_vlan() flow_s1_2out = of.ofp_action_output(port = 1) flow_s1_2.actions = [flow_s1_2stripvlan,flow_s1_2out] flow_s1_3 = of.ofp_flow_mod() flow_s1_3.priority = 32768 # A mayor valor mas prioridad flow_s1_3.match.dl_vlan = 20 flow_s1_3stripvlan = of.ofp_action_strip_vlan() flow_s1_3out = of.ofp_action_output(port = 2) flow_s1_3.actions = [flow_s1_3stripvlan,flow_s1_3out] # Instalacion de los flujos previamente definidos core.openflow.sendToDPID(s1_dpid,flow_s1_0) core.openflow.sendToDPID(s1_dpid,flow_s1_1) core.openflow.sendToDPID(s1_dpid,flow_s1_2) core.openflow.sendToDPID(s1_dpid,flow_s1_3) # switch s2 if event.connection.dpid==s2_dpid: # Flujos para la tabla de flujos del switch flow_s2_0 = of.ofp_flow_mod() flow_s2_0.priority = 32768 # A mayor valor mas prioridad flow_s2_0.match.in_port = 2 flow_s2_0vlan_id = of.ofp_action_vlan_vid(vlan_vid = 20) flow_s2_queue2 = of.ofp_action_enqueue(port = 1, queue_id = 2) flow_s2_0.actions = [flow_s2_0vlan_id,flow_s2_queue2] flow_s2_1 = of.ofp_flow_mod() flow_s2_1.priority = 32768 # A mayor valor mas prioridad flow_s2_1.match.in_port = 3 flow_s2_1vlan_id = of.ofp_action_vlan_vid(vlan_vid = 10) flow_s2_queue1 = of.ofp_action_enqueue(port = 1, queue_id = 1) flow_s2_1.actions = [flow_s2_1vlan_id,flow_s2_queue1] flow_s2_2 = of.ofp_flow_mod() flow_s2_2.priority = 32768 # A mayor valor mas prioridad flow_s2_2.match.dl_vlan = 10 flow_s2_2stripvlan = of.ofp_action_strip_vlan() flow_s2_2out = of.ofp_action_output(port = 3) flow_s2_2.actions = [flow_s2_2stripvlan,flow_s2_2out] flow_s2_3 = of.ofp_flow_mod() flow_s2_3.priority = 32768 # A mayor valor mas prioridad flow_s2_3.match.dl_vlan = 20 flow_s2_3stripvlan = of.ofp_action_strip_vlan() flow_s2_3out = of.ofp_action_output(port = 2) flow_s2_3.actions = [flow_s2_3stripvlan,flow_s2_3out] # Instalacion de los flujos previamente definidos core.openflow.sendToDPID(s2_dpid,flow_s2_0) core.openflow.sendToDPID(s2_dpid,flow_s2_1) core.openflow.sendToDPID(s2_dpid,flow_s2_2) core.openflow.sendToDPID(s2_dpid,flow_s2_3)
def reply_request(self,
success,
request_id,
event,
title_aggr=None,
w=None):
# Build the response
resp_msg = dts_pb2.ControlResponse()
resp_msg.status = resp_msg.SUCCESS if success else resp_msg.FAILURE
if request_id != None:
resp_msg.request_id = request_id
if self.aggr and w: # reply for the second workspace attachment
print 'title_aggr', title_aggr, 'flow', self.flow
# Send FLOW_MOD to the swith that is ataching an entity
title = w.title
if title_aggr in workspaces_aggr:
w2 = workspaces_aggr[title_aggr]
else:
log.info('Unknown aggregated workspace title')
title_hash = hashlib.sha256(title).digest()[:12]
title_hash_aggr = hashlib.sha256(title_aggr).digest()[:12]
recvRule = of.ofp_flow_mod()
recvRule.command = of.OFPFC_MODIFY_STRICT
#recvRule.match.dl_type = 0x0880 # Causes conflicts with user-space switches
recvRule.match.dl_dst = title_hash_aggr[:6]
recvRule.match.dl_src = title_hash_aggr[6:]
recvRule.match.dl_vlan = self.flow
recvRule.actions.append(
of.ofp_action_dl_addr.set_dst(title_hash[:6]))
recvRule.actions.append(
of.ofp_action_dl_addr.set_src(title_hash[6:]))
recvRule.actions.append(
of.ofp_action_enqueue(port=event.port, queue_id=1))
core.openflow.sendToDPID(event.dpid, recvRule)
try:
s = w.switches[event.dpid]
except KeyError:
s = w.WPSwitch(event.dpid)
w.switches[s.dpid] = s
if event.dpid == w2.path[-1]:
s.used_ports.add(
graph[w2.path[-1]][w2.path[w2.path.index(w2.path[-1]) -
1]]['ports'][w2.path[-1]])
else:
s.used_ports.add(
graph[w2.path[0]][w2.path[w2.path.index(w2.path[0]) +
1]]['ports'][w2.path[0]])
sendRule = of.ofp_flow_mod()
sendRule.command = of.OFPFC_MODIFY_STRICT
#sendRule.match.dl_type = 0x0880 # Causes conflicts with user-space switches
sendRule.match.dl_dst = title_hash[:6]
sendRule.match.dl_src = title_hash[6:]
sendRule.actions.append(
of.ofp_action_dl_addr.set_dst(title_hash_aggr[:6]))
sendRule.actions.append(
of.ofp_action_dl_addr.set_src(title_hash_aggr[6:]))
sendRule.actions.append(of.ofp_action_vlan_vid(vlan_vid=self.flow))
for p in s.used_ports:
sendRule.actions.append(
of.ofp_action_enqueue(port=p, queue_id=1))
core.openflow.sendToDPID(event.dpid, sendRule)
# Send FLOW_MOD to the switch that created the workspace
switch1 = wks[w.title]
print 'OZUUUUUU1', switch1.dpid, switch1.port,
try:
s = w.switches[switch1.dpid]
except KeyError:
s = w.WPSwitch(switch1.dpid)
w.switches[s.dpid] = s
if switch1.dpid == w2.path[0]:
s.used_ports.add(
graph[w2.path[0]][w2.path[w2.path.index(w2.path[0]) +
1]]['ports'][w2.path[0]])
else:
s.used_ports.add(
graph[w2.path[-1]][w2.path[w2.path.index(w2.path[-1]) -
1]]['ports'][w2.path[-1]])
sendRule = of.ofp_flow_mod()
sendRule.command = of.OFPFC_MODIFY_STRICT
#sendRule.match.dl_type = 0x0880 # Causes conflicts with user-space switches
sendRule.match.dl_dst = title_hash[:6]
sendRule.match.dl_src = title_hash[6:]
sendRule.actions.append(
of.ofp_action_dl_addr.set_dst(title_hash_aggr[:6]))
sendRule.actions.append(
of.ofp_action_dl_addr.set_src(title_hash_aggr[6:]))
sendRule.actions.append(of.ofp_action_vlan_vid(vlan_vid=self.flow))
for p in s.used_ports:
sendRule.actions.append(
of.ofp_action_enqueue(port=p, queue_id=1))
core.openflow.sendToDPID(switch1.dpid, sendRule)
recvRule = of.ofp_flow_mod()
recvRule.command = of.OFPFC_MODIFY_STRICT
#recvRule.match.dl_type = 0x0880 # Causes conflicts with user-space switches
recvRule.match.dl_dst = title_hash_aggr[:6]
recvRule.match.dl_src = title_hash_aggr[6:]
recvRule.match.dl_vlan = self.flow
recvRule.actions.append(
of.ofp_action_dl_addr.set_dst(title_hash[:6]))
recvRule.actions.append(
of.ofp_action_dl_addr.set_src(title_hash[6:]))
recvRule.actions.append(
of.ofp_action_enqueue(port=event.port, queue_id=1))
core.openflow.sendToDPID(switch1.dpid, recvRule)
resp_msg = resp_msg.SerializeToString()
# Send response back to the entity
resp = of.ofp_packet_out()
if not self.wifi: # not wifi
resp.data = ''.join(
(DTSA.HEADER, struct.pack("<H", len(resp_msg)), resp_msg))
else:
resp.data = ''.join(
(self.addrResp, struct.pack("<H", len(resp_msg)), resp_msg))
resp.actions.append(of.ofp_action_output(port=event.port))
event.connection.send(resp)
def attach(self, entity, packet=None):
if entity.title in self.entities:
return False
self.entities[entity.title] = entity
entity.workspaces[self.title] = self
self.switches2 += [entity.switch_dpid]
try:
s = self.switches[entity.switch_dpid]
except KeyError:
s = self.WPSwitch(entity.switch_dpid)
self.switches[s.dpid] = s
s.used_ports.add(entity.port)
#print 'self.switches.keys', self.switches.keys() #print graph.nodes()
if self.qos:
path = nx.shortest_path(graph,
self.switches2[-1],
self.switches2[0],
weight='cost')
log.info(
' -> path with minimum QoS cost between {} and {} is: {}'.
format(self.switches2[-1], self.switches2[0], path))
else:
path = nx.shortest_path(graph, self.switches2[-1],
self.switches2[0])
log.info(' -> shortest path between {} and {} is: {}'.format(
self.switches2[-1], self.switches2[0], path))
if not self.wifi:
msg = of.ofp_flow_mod()
#msg.match.dl_type = 0x0880 # Causes conflicts with user-space switchs
msg.command = of.OFPFC_MODIFY_STRICT # of.OFPFC_MODIFY || of.OFPFC_ADD
msg.match.dl_dst = self.title_hash[:6]
msg.match.dl_src = self.title_hash[6:]
if path.__len__() > 1:
if self.bw and self.cos:
log.info(
" -> enqueuing in queue 1, corresponding to CoS silver"
)
for i in path:
if i == path[-1]:
self.switches[i].used_ports.add(
graph[i][path[path.index(i) - 1]]['ports'][i])
elif i == path[0]:
self.switches[i].used_ports.add(
graph[i][path[path.index(i) + 1]]['ports'][i])
else:
try:
s = self.switches[i]
except KeyError:
s = self.WPSwitch(i)
self.switches[i] = s
self.switches[i].used_ports.add(
graph[i][path[path.index(i) + 1]]['ports'][i])
self.switches[i].used_ports.add(
graph[i][path[path.index(i) - 1]]['ports'][i])
if self.bw and self.cos:
msg.actions = [
of.ofp_action_enqueue(port=p, queue_id=0)
for p in self.switches[i].used_ports
] # ofp_action_enqueue(port=0, queue_id=0)
else:
msg.actions = [
of.ofp_action_enqueue(port=p, queue_id=1)
for p in self.switches[i].used_ports
]
core.openflow.sendToDPID(i, msg)
else:
#print 'output:', s.used_ports, 'dpid:', s.dpid
#msg.actions = [of.ofp_action_output(port=p) for p in s.used_ports]
if self.bw and self.cos:
msg.actions = [
of.ofp_action_enqueue(port=p, queue_id=0)
for p in s.used_ports
]
else:
msg.actions = [
of.ofp_action_enqueue(port=p, queue_id=1)
for p in s.used_ports
]
core.openflow.sendToDPID(s.dpid, msg)
else: # ============================================================================================================================== wifi
rule1 = of.ofp_flow_mod()
rule1.match.dl_dst = self.title_hash[:6]
#rule1.match.dl_type = 0x0880 # Causes conflicts with user-space switch
rule1.command = of.OFPFC_MODIFY_STRICT
rule1.actions.append(
of.ofp_action_dl_addr.set_src(self.title_hash[:6]))
rule1.actions.append(
of.ofp_action_dl_addr.set_dst(EthAddr("FF:FF:FF:FF:FF:FF")))
rule2 = of.ofp_flow_mod()
rule2.match.dl_dst = EthAddr("FF:FF:FF:FF:FF:FF")
rule2.match.dl_src = self.title_hash[6:]
#rule2.match.dl_type = 0x0880
rule2.command = of.OFPFC_MODIFY_STRICT
if path.__len__() > 1:
for i in path:
if i == path[-1]:
self.switches[i].used_ports.add(
graph[i][path[path.index(i) - 1]]['ports'][i])
elif i == path[0]:
self.switches[i].used_ports.add(
graph[i][path[path.index(i) + 1]]['ports'][i])
for p in self.switches[i].used_ports:
rule1.actions.append(of.ofp_action_output(port=p))
core.openflow.sendToDPID(i, rule1)
else:
try:
s = self.switches[i]
except KeyError:
s = self.WPSwitch(i)
self.switches[i] = s
self.switches[i].used_ports.add(
graph[i][path[path.index(i) + 1]]['ports'][i])
self.switches[i].used_ports.add(
graph[i][path[path.index(i) - 1]]['ports'][i])
if self.bw and self.cos:
# print 'enqueue'
rule2.actions = [
of.ofp_action_enqueue(port=p)
for p in self.switches[i].used_ports
] # ofp_action_enqueue(port=0, queue_id=0)
else:
rule2.actions = [
of.ofp_action_output(port=p)
for p in self.switches[i].used_ports
]
core.openflow.sendToDPID(i, rule2)
else:
for p in s.used_ports:
rule1.actions.append(of.ofp_action_output(port=p))
core.openflow.sendToDPID(s.dpid, rule1)
rule2.actions = [
of.ofp_action_output(port=p) for p in s.used_ports
]
core.openflow.sendToDPID(s.dpid, rule2)
#print 'self.switches', self.switches # for debug
return True
def _handle_PacketIn (self, event):
"""
Handle packet in messages from the switch to implement above algorithm.
"""
packet = event.parsed
def flood (message = None):
""" Floods the packet """
msg = of.ofp_packet_out()
if time.time() - self.connection.connect_time >= _flood_delay:
# Only flood if we've been connected for a little while...
if self.hold_down_expired is False:
# Oh yes it is!
self.hold_down_expired = True
log.info("%s: Flood hold-down expired -- flooding",
dpid_to_str(event.dpid))
if message is not None: log.debug(message)
#log.debug("%i: flood %s -> %s", event.dpid,packet.src,packet.dst)
# OFPP_FLOOD is optional; on some switches you may need to change
# this to OFPP_ALL.
msg.actions.append(of.ofp_action_output(port = of.OFPP_FLOOD))
else:
pass
#log.info("Holding down flood for %s", dpid_to_str(event.dpid))
msg.data = event.ofp
msg.in_port = event.port
self.connection.send(msg)
def drop (duration = None):
"""
Drops this packet and optionally installs a flow to continue
dropping similar ones for a while
"""
if duration is not None:
if not isinstance(duration, tuple):
duration = (duration,duration)
msg = of.ofp_flow_mod()
msg.match = of.ofp_match.from_packet(packet)
msg.idle_timeout = duration[0]
msg.hard_timeout = duration[1]
msg.buffer_id = event.ofp.buffer_id
self.connection.send(msg)
elif event.ofp.buffer_id is not None:
msg = of.ofp_packet_out()
msg.buffer_id = event.ofp.buffer_id
msg.in_port = event.port
self.connection.send(msg)
self.macToPort[packet.src] = event.port # 1
if not self.transparent: # 2
if packet.type == packet.LLDP_TYPE or packet.dst.isBridgeFiltered():
drop() # 2a
return
if packet.dst.is_multicast:
flood() # 3a
else:
if packet.dst not in self.macToPort: # 4
flood("Port for %s unknown -- flooding" % (packet.dst,)) # 4a
else:
port = self.macToPort[packet.dst]
if port == event.port: # 5
# 5a
log.warning("Same port for packet from %s -> %s on %s.%s. Drop."
% (packet.src, packet.dst, dpid_to_str(event.dpid), port))
drop(10)
return
# 6
log.debug("installing flow for %s.%i -> %s.%i" %
(packet.src, event.port, packet.dst, port))
msg = of.ofp_flow_mod()
msg.match = of.ofp_match.from_packet(packet, event.port)
msg.idle_timeout = 10
msg.hard_timeout = 30
dnsval = core.DNSSpy.lookup(IPAddr(msg.match.nw_dst))
log.info("resolv is %s " % dnsval )
if dnsval is not None:
if 'www.fun.com' in dnsval:
log.info("priority 1 " )
msg.actions.append(of.ofp_action_enqueue(port = port, queue_id = 0x01));
if dnsval is not None:
if 'www.work.com' in dnsval:
log.info("priority 2 " )
msg.actions.append(of.ofp_action_enqueue(port = port, queue_id = 0x02));
msg.actions.append(of.ofp_action_output(port = port))
msg.data = event.ofp # 6a
self.connection.send(msg)
def _handle_PacketIn(event):
global s1_dpid, s2_dpid
print "PacketIn:", dpidToStr(event.connection.dpid)
if event.connection.dpid == s1_dpid:
msg = of.ofp_flow_mod()
msg.priority = 1
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0806
msg.actions.append(of.ofp_action_output(port=of.OFPP_ALL))
event.connection.send(msg)
# up: q0 for default queue.traffic from h3 to h4
# below:q1 for traffic h1 to h4
msg = of.ofp_flow_mod()
msg.priority = 100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_src = "10.0.0.1"
msg.match.nw_dst = "10.0.0.4"
msg.actions.append(of.ofp_action_enqueue(port=4, queue_id=1))
event.connection.send(msg)
# below:q2 for traffic h2 to h4
msg = of.ofp_flow_mod()
msg.priority = 100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_src = "10.0.0.2"
msg.match.nw_dst = "10.0.0.4"
msg.actions.append(of.ofp_action_enqueue(port=4, queue_id=2))
event.connection.send(msg)
# below:ports info
msg = of.ofp_flow_mod()
msg.priority = 10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.1"
msg.actions.append(of.ofp_action_output(port=1))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority = 10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.2"
msg.actions.append(of.ofp_action_output(port=2))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority = 10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.3"
msg.actions.append(of.ofp_action_output(port=3))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority = 10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.4"
msg.actions.append(of.ofp_action_output(port=4))
event.connection.send(msg)
elif event.connection.dpid == s2_dpid:
msg = of.ofp_flow_mod()
msg.priority = 1
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.in_port = 1
msg.actions.append(of.ofp_action_output(port=2))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority = 1
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.in_port = 2
msg.actions.append(of.ofp_action_output(port=1))
event.connection.send(msg)
def _handle_PacketIn (event):
global s1_dpid, s2_dpid
# print "PacketIn: ", dpidToStr(event.connection.dpid)
if event.connection.dpid==s1_dpid:
msg = of.ofp_flow_mod()
msg.priority =1
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0806
msg.actions.append(of.ofp_action_output(port = of.OFPP_ALL))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_src = "10.0.0.1"
msg.match.nw_dst = "10.0.0.4"
msg.actions.append(of.ofp_action_enqueue(port = 4, queue_id=1))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =100
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_src = "10.0.0.2"
msg.match.nw_dst = "10.0.0.4"
msg.actions.append(of.ofp_action_enqueue(port = 4, queue_id=2))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.1"
msg.actions.append(of.ofp_action_output(port = 1))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.2"
msg.actions.append(of.ofp_action_output(port = 2))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.3"
msg.actions.append(of.ofp_action_output(port = 3))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =10
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.dl_type = 0x0800
msg.match.nw_dst = "10.0.0.4"
msg.actions.append(of.ofp_action_output(port = 4))
event.connection.send(msg)
elif event.connection.dpid==s2_dpid:
msg = of.ofp_flow_mod()
msg.priority =1
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.in_port =1
msg.actions.append(of.ofp_action_output(port = 2))
event.connection.send(msg)
msg = of.ofp_flow_mod()
msg.priority =1
msg.idle_timeout = 0
msg.hard_timeout = 0
msg.match.in_port =2
msg.actions.append(of.ofp_action_output(port = 1))
event.connection.send(msg)
def launch ():
core.openflow.addListenerByName("ConnectionUp", _handle_ConnectionUp)
core.openflow.addListenerByName("PacketIn", _handle_PacketIn)
def _handle_PacketIn (self, event):
dpid = event.connection.dpid
inport = event.port
packet = event.parsed
if not packet.parsed:
log.warning("%i %i ignoring unparsed packet", dpid, inport)
return
if dpid not in self.ip_mac_port:
self.ip_mac_port[dpid] = {}
for fake in self.fakeways:
self.ip_mac_port[dpid][IPAddr(fake)] = Entry(of.OFPP_NONE,
dpid_to_mac(dpid))
if packet.type == ethernet.LLDP_TYPE:
return
if isinstance(packet.next, ipv4):
log.debug("%i %i IP %s => %s", dpid,inport,
packet.next.srcip,packet.next.dstip)
self._send_lost_buffers(dpid, packet.next.srcip, packet.src, inport)
if packet.next.srcip in self.ip_mac_port[dpid]:
if self.ip_mac_port[dpid][packet.next.srcip] != (inport, packet.src):
log.debug("%i %i RE-learned %s", dpid,inport,packet.next.srcip)
else:
#log.info("%i %i learned %s", dpid,inport,str(packet.next.srcip))
log.info("switch %i learned %s from input port %i", dpid,str(packet.next.srcip),inport)
self.ip_mac_port[dpid][packet.next.srcip] = Entry(inport, packet.src)
dstaddr = packet.next.dstip
if dstaddr in self.ip_mac_port[dpid]:
prt = self.ip_mac_port[dpid][dstaddr].port
mac = self.ip_mac_port[dpid][dstaddr].mac
print dstaddr
if prt == inport:
log.warning("%i %i not sending packet for %s back out of the " +
"input port" % (dpid, inport, str(dstaddr)))
else:
log.debug("%i %i installing flow for %s => %s out port %i"
% (dpid, inport, packet.next.srcip, dstaddr, prt))
if event.ofp.buffer_id==None:
bid = None
else:
bid = event.ofp.buffer_id
ip_packet=packet.find("ipv4")
if ip_packet!=None:
if ip_packet.protocol==1:
actions3 = []
actions3.append(of.ofp_action_dl_addr.set_dst(mac))
#actions3.append(of.ofp_action_output(port = prt))
actions3.append(of.ofp_action_enqueue(port = prt,queue_id=1))
match3 = of.ofp_match.from_packet(packet, inport)
match3.dl_type=0x800
match3.nw_proto = 1
match3.dl_src = None
msg3 = of.ofp_flow_mod(command=of.OFPFC_ADD,
idle_timeout=FLOW_IDLE_TIMEOUT,
hard_timeout=of.OFP_FLOW_PERMANENT,
buffer_id=bid,
actions=actions3, priority=30,
match=match3)
event.connection.send(msg3.pack())
print "into queue 1"
elif ip_packet.protocol==17 or ip_packet.protocol==6:
udp_packet=packet.find("udp")
if udp_packet==None:
udp_packet=packet.find("tcp")
if ip_packet.dstip==IPAddr("172.16.0.3") and udp_packet.dstport==5001:
actions5 = []
actions5.append(of.ofp_action_dl_addr.set_dst(mac))
#actions5.append(of.ofp_action_output(port = prt))
actions5.append(of.ofp_action_enqueue(port = prt,queue_id=3))
match5 = of.ofp_match.from_packet(packet, inport)
match5.dl_type=0x800
match5.nw_proto = 17
match5.nw_dst = IPAddr("172.16.0.3")
match5.tp_dst = 5001
match5.dl_src = None
msg5 = of.ofp_flow_mod(command=of.OFPFC_ADD,
idle_timeout=FLOW_IDLE_TIMEOUT,
hard_timeout=of.OFP_FLOW_PERMANENT,
buffer_id=bid,
actions=actions5, priority=43,
match=match5)
event.connection.send(msg5.pack())
print "privillaged user into queue 3"
elif ip_packet.tos==0:
actions2 = []
actions2.append(of.ofp_action_dl_addr.set_dst(mac))
#actions2.append(of.ofp_action_output(port = prt))
actions2.append(of.ofp_action_nw_tos(224))
actions2.append(of.ofp_action_enqueue(port = prt,queue_id=2))
match2 = of.ofp_match.from_packet(packet, inport)
match2.dl_type=0x800
if udp_packet!=None:
match2.nw_proto = 17
else:
match2.nw_proto = 6
match2.dl_src = None
msg2 = of.ofp_flow_mod(command=of.OFPFC_ADD,
idle_timeout=FLOW_IDLE_TIMEOUT,
hard_timeout=of.OFP_FLOW_PERMANENT,
buffer_id=bid,
actions=actions2, priority=42,
match=match2)
event.connection.send(msg2.pack())
print "into queue 2"
else:
actions1 = []
actions1.append(of.ofp_action_dl_addr.set_dst(mac))
#actions1.append(of.ofp_action_output(port = prt))
actions1.append(of.ofp_action_enqueue(port = prt,queue_id=2))
match1 = of.ofp_match.from_packet(packet, inport)
match1.dl_type=0x800
match1.nw_tos = 224
match1.dl_src = None
msg1 = of.ofp_flow_mod(command=of.OFPFC_ADD,
idle_timeout=FLOW_IDLE_TIMEOUT,
hard_timeout=of.OFP_FLOW_PERMANENT,
buffer_id=bid,
actions=actions1, priority=42,
match=match1)
event.connection.send(msg1.pack())
print "into queue 2 dscp tagged"
else:
actions = []
actions.append(of.ofp_action_dl_addr.set_dst(mac))
actions.append(of.ofp_action_output(port = prt))
match4 = of.ofp_match.from_packet(packet, inport)
match4.dl_src = None # Wildcard source MAC
msg = of.ofp_flow_mod(command=of.OFPFC_ADD,
idle_timeout=FLOW_IDLE_TIMEOUT,
hard_timeout=of.OFP_FLOW_PERMANENT,
buffer_id=bid,
actions=actions, priority=20,
match=match4)
event.connection.send(msg.pack())
elif self.arp_for_unknowns:
if (dpid,dstaddr) not in self.lost_buffers:
self.lost_buffers[(dpid,dstaddr)] = []
bucket = self.lost_buffers[(dpid,dstaddr)]
entry = (time.time() + MAX_BUFFER_TIME,event.ofp.buffer_id,inport)
bucket.append(entry)
while len(bucket) > MAX_BUFFERED_PER_IP: del bucket[0]
self.outstanding_arps = {k:v for k,v in
self.outstanding_arps.iteritems() if v > time.time()}
if (dpid,dstaddr) in self.outstanding_arps:
return
self.outstanding_arps[(dpid,dstaddr)] = time.time() + 4
r = arp()
r.hwtype = r.HW_TYPE_ETHERNET
r.prototype = r.PROTO_TYPE_IP
r.hwlen = 6
r.protolen = r.protolen
r.opcode = r.REQUEST
r.hwdst = ETHER_BROADCAST
r.protodst = dstaddr
r.hwsrc = packet.src
r.protosrc = packet.next.srcip
e = ethernet(type=ethernet.ARP_TYPE, src=packet.src,
dst=ETHER_BROADCAST)
e.set_payload(r)
log.debug("%i %i ARPing for %s on behalf of %s" % (dpid, inport,
str(r.protodst), str(r.protosrc)))
msg = of.ofp_packet_out()
msg.data = e.pack()
msg.actions.append(of.ofp_action_output(port = of.OFPP_FLOOD))
msg.in_port = inport
event.connection.send(msg)
elif isinstance(packet.next, arp):
a = packet.next
log.debug("%i %i ARP %s %s => %s", dpid, inport,
{arp.REQUEST:"request",arp.REPLY:"reply"}.get(a.opcode,
'op:%i' % (a.opcode,)), str(a.protosrc), str(a.protodst))
if a.prototype == arp.PROTO_TYPE_IP:
if a.hwtype == arp.HW_TYPE_ETHERNET:
if a.protosrc != 0:
# Learn or update port/MAC info
if a.protosrc in self.ip_mac_port[dpid]:
if self.ip_mac_port[dpid][a.protosrc] != (inport, packet.src):
log.debug("%i %i RE-learned %s", dpid,inport,str(a.protosrc))
else:
log.info("switch %i learned %s from input port %i", dpid,str(a.protosrc),inport)
self.ip_mac_port[dpid][a.protosrc] = Entry(inport, packet.src)
# Send any waiting packets...
self._send_lost_buffers(dpid, a.protosrc, packet.src, inport)
if a.opcode == arp.REQUEST:
# Maybe we can answer
if a.protodst in self.ip_mac_port[dpid]:
# We have an answer...
if not self.ip_mac_port[dpid][a.protodst].isExpired():
# .. and it's relatively current, so we'll reply ourselves
r = arp()
r.hwtype = a.hwtype
r.prototype = a.prototype
r.hwlen = a.hwlen
r.protolen = a.protolen
r.opcode = arp.REPLY
r.hwdst = a.hwsrc
r.protodst = a.protosrc
r.protosrc = a.protodst
r.hwsrc = self.ip_mac_port[dpid][a.protodst].mac
e = ethernet(type=packet.type, src=dpid_to_mac(dpid),
dst=a.hwsrc)
e.set_payload(r)
#log.debug("%i %i answering ARP for %s" % (dpid, inport,str(r.protosrc)))
msg = of.ofp_packet_out()
msg.data = e.pack()
msg.actions.append(of.ofp_action_output(port =
of.OFPP_IN_PORT))
msg.in_port = inport
event.connection.send(msg)
return
# Didn't know how to answer or otherwise handle this ARP, so just flood it
log.debug("%i %i flooding ARP %s %s => %s" % (dpid, inport,
{arp.REQUEST:"request",arp.REPLY:"reply"}.get(a.opcode,'op:%i' % (a.opcode,)), str(a.protosrc), str(a.protodst)))
msg = of.ofp_packet_out(in_port = inport, data = event.ofp,
action = of.ofp_action_output(port = of.OFPP_FLOOD))
event.connection.send(msg)
