def _handle_PacketIn(self, event):
packet = event.parsed
#Forward ARP packets
if packet.type == ethernet.ARP_TYPE:
arphdr = packet.find('arp')
#If packets come from SRV2 machine
if arphdr.opcode == arp.REQUEST and event.port == self.srv2_port:
log.debug("Installing ARP flow for port %i -> %i on %s" %
(event.port, self.br1_port, dpid_to_str(self.dpid)))
OpenFlowAids.output_packet_to_port(event, packet,
self.br1_port)
#If packets come from br1 machine
elif arphdr.opcode == arp.REPLY:
if arphdr.protodst == IPAddr('10.5.5.1'):
log.debug(
"Installing ARP flow for port %i -> %i on %s" %
(event.port, self.srv2_port, dpid_to_str(self.dpid)))
OpenFlowAids.output_packet_to_port(event, packet,
self.srv2_port)
elif event.port == self.srv2_port:
log.debug("Installing IP flow for port %i -> %i on %s" %
(event.port, self.br2_port, dpid_to_str(self.dpid)))
OpenFlowAids.output_packet_to_port(event, packet, self.br2_port)
elif event.port == self.br2_port:
log.debug("Installing IP flow for port %i -> %i on %s" %
(event.port, self.srv2_port, dpid_to_str(self.dpid)))
OpenFlowAids.output_packet_to_port(event, packet, self.srv2_port)
def _handle_PacketIn (self, event):
from __builtin__ import str
data_path_id = dpid_to_str(event.dpid)
packet = event.parsed
#log.debug("Packet payload %s" % packet.payload)
arphdr = packet.find('arp')
if arphdr is not None:
if packet.payload.opcode == arp.REQUEST:
self._replyArp(packet, self.ip2gateway[str(arphdr.protosrc)], event)
pass
else:
iphdr = packet.find('ipv4')
if iphdr is not None:
#Handle IPv4 here
log.debug("DPID: %s IN_PORT %i IPV4 %s -> %s " % (data_path_id, event.port, iphdr.srcip, iphdr.dstip) )
if data_path_id == "00-00-00-00-00-01" :
self._flow_from_port_to_port_reactive(event=event, from_port=1, to_port=3, dst="10.5.5.1")
self._flow_from_port_to_port_reactive(event=event, from_port=3, to_port=1, dst="172.20.1.1")
if data_path_id == "00-00-00-00-00-03":
self._flow_from_port_to_port_reactive(event=event, from_port=4, to_port=3, dst="10.5.5.1")
self._flow_from_port_to_port_reactive(event=event, from_port=3, to_port=4, dst="172.20.1.1")
if data_path_id == "00-00-00-00-00-04":
self._flow_from_port_to_port_reactive(event=event, from_port=4, to_port=6, dst="10.5.5.1")
self._flow_from_port_to_port_reactive(event=event, from_port=7, to_port=5, dst="10.5.5.1")
self._flow_from_port_to_port_reactive(event=event, from_port=5, to_port=3, dst="10.5.5.1")
self._flow_from_port_to_port_reactive(event=event, from_port=3, to_port=6, dst="172.20.1.1")
self._flow_from_port_to_port_reactive(event=event, from_port=7, to_port=4, dst="172.20.1.1")
#iphdr.srcip
#iphdr.dstip
pass
def _handle_PacketIn(self, event):
packet = event.parsed
if packet.type == ethernet.IP_TYPE:
ip_header = packet.find('ipv4')
if ip_header.dstip == IPAddr('10.5.5.1'):
log.debug("Installing IP flow for port %i -> %i as %s" %
(event.port, self.br2_port, dpid_to_str(event.dpid)))
OpenFlowAids.output_packet_to_port(event, packet,
self.br2_port)
elif event.port == self.br2_port and ip_header.dstip == IPAddr(
'172.20.1.1'):
log.debug("Installing IP flow for port %i -> %i as %s" %
(event.port, self.cli_port, dpid_to_str(event.dpid)))
OpenFlowAids.output_packet_to_port(event, packet,
self.cli_port)
def _handle_ConnectionUp(self, event):
data_path_id = dpid_to_str(event.dpid)
self.connections.append(event.connection)
if data_path_id == "00-00-00-00-00-02":
self._flow_from_port_to_port(event=event, from_port=1, to_port=4, dst="10.4.4.1")
self._flow_from_port_to_port(event=event, from_port=4, to_port=5, dst="10.4.4.1")
self._flow_from_port_to_port(event=event, from_port=5, to_port=3, dst="10.4.4.1")
self._flow_from_port_to_port(event=event, from_port=3, to_port=2, dst="10.4.4.1")
self._flow_from_port_to_port(event=event, from_port=2, to_port=4, dst="172.20.1.1")
self._flow_from_port_to_port(event=event, from_port=5, to_port=1, dst="172.20.1.1")
if data_path_id == "00-00-00-00-00-01" or data_path_id == "00-00-00-00-00-03":
self._flow_from_port_to_port(event=event, from_port=1, to_port=2, dst="10.4.4.1")
self._flow_from_port_to_port(event=event, from_port=2, to_port=1, dst="172.20.1.1")
#the DPID in string form is dash separated like "00-00-00-00-00-00"
log.debug("Handling the connection up event for DPID : %s" % data_path_id)
def __init__(self, dpid, connection):
def install_proactive_rules(connection):
#srv1 -> br1
msg = of.ofp_flow_mod()
OpenFlowAids.match_input_port(msg, self.srv1_port)
OpenFlowAids.set_timeouts(msg, 0, 0)
OpenFlowAids.set_output_port(msg, self.br1_port)
connection.send(msg)
#br1 IP -> srv1
msg = of.ofp_flow_mod()
OpenFlowAids.match_input_port(msg, self.br1_port)
OpenFlowAids.match_dst_ip(msg, '10.4.4.1')
OpenFlowAids.set_timeouts(msg, 0, 0)
OpenFlowAids.set_output_port(msg, self.srv1_port)
connection.send(msg)
#br1 ARP -> br0
msg = of.ofp_flow_mod()
msg.match.dl_type = 0x806 #match ARP packets
msg.match.nw_dst = IPAddr('10.4.4.1')
OpenFlowAids.match_input_port(msg, self.br1_port)
OpenFlowAids.set_timeouts(msg, 0, 0)
OpenFlowAids.set_output_port(msg, self.srv1_port)
connection.send(msg)
# The bridge itself
self.dpid = dpid
self.connection = connection
# We want to hear PacketIn messages, so we listen
# to the connection
connection.addListeners(self)
self.br1_port = 1
self.br2_port = 2
self.srv1_port = 5
self.srv2_port = 6
install_proactive_rules(self.connection)
log.debug('Proactive rules installed on bridge %s' %
dpid_to_str(self.dpid))
def _handle_ConnectionUp(self, event):
def br1_proactive_rules(connection):
def install_rule(input_port, output_port):
msg = of.ofp_flow_mod()
OpenFlowAids.match_input_port(msg, input_port)
OpenFlowAids.set_timeouts(msg, 0, 0)
OpenFlowAids.set_output_port(msg, output_port)
connection.send(msg)
#Ports
br0_port = 1
br3_port = 2
fw_in_port = 3
fw_out_port = 4
packet_printer_port = 5
#br0 -> fw_in
install_rule(br0_port, fw_in_port)
#br3 -> fw_out
install_rule(br3_port, fw_out_port)
#fw_in -> br0
install_rule(fw_in_port, br0_port)
#fw_out -> packetprinter
install_rule(fw_out_port, packet_printer_port)
#packetprinter -> br3
install_rule(packet_printer_port, br3_port)
data_path_id = dpid_to_str(event.dpid)
#the DPID in string form is dash separated like "00-00-00-00-00-00"
log.debug("\nHandling the connection up event for DPID : %s" %
data_path_id)
if data_path_id == '00-00-00-00-01-01':
br0_rules(event.dpid, event.connection)
elif data_path_id == '00-00-00-00-01-02':
br1_proactive_rules(event.connection)
elif data_path_id == '00-00-00-00-01-04':
br3_rules(event.dpid, event.connection)
def _handle_PacketIn(self, event):
packet = event.parsed
#Rules for br2
if dpid_to_str(event.dpid) == '00-00-00-00-01-03':
br0_port = 1
br3_port = 2
nat_in_port = 3
nat_out_port = 4
packetprinter_port = 5
#br0 -> br3
if (event.port == br0_port and packet.type == ethernet.IP_TYPE):
log.debug(
"Installing packet to NAT flow for port %i -> %i as %s" %
(event.port, nat_in_port, dpid_to_str(event.dpid)))
OpenFlowAids.output_packet_to_port(event, packet, nat_in_port)
elif (event.port == nat_out_port
and packet.type == ethernet.IP_TYPE):
log.debug(
"Installing packet to PPT flow for port %i -> %i as %s" %
(event.port, packetprinter_port, dpid_to_str(event.dpid)))
OpenFlowAids.output_packet_to_port(event, packet,
packetprinter_port)
elif (event.port == packetprinter_port
and packet.type == ethernet.IP_TYPE):
log.debug("Installing IP flow for port %i -> %i as %s" %
(event.port, br3_port, dpid_to_str(event.dpid)))
OpenFlowAids.output_packet_to_port(event, packet, br3_port)
#br3 -> br0
elif (event.port == br3_port):
log.debug(
"Installing packet to NAT flow for port %i -> %i as %s" %
(event.port, nat_out_port, dpid_to_str(event.dpid)))
OpenFlowAids.output_packet_to_port(event, packet, nat_out_port)
elif (event.port == nat_in_port):
log.debug(
"Installing packet to NAT flow for port %i -> %i as %s" %
(event.port, br0_port, dpid_to_str(event.dpid)))
OpenFlowAids.output_packet_to_port(event, packet, br0_port)
