def _packet_in_handler(self, ev):
msg = ev.msg
datapath = msg.datapath
ofproto = datapath.ofproto
dst, src, _eth_type = struct.unpack_from('!6s6sH', buffer(msg.data), 0)
dpid = datapath.id
self.mac_to_port.setdefault(dpid, {})
LOG.info("packet in %s %s %s %s",
dpid, haddr_to_str(src), haddr_to_str(dst), msg.in_port)
# learn a mac address to avoid FLOOD next time.
self.mac_to_port[dpid][src] = msg.in_port
if dst in self.mac_to_port[dpid]:
out_port = self.mac_to_port[dpid][dst]
else:
out_port = ofproto.OFPP_FLOOD
actions = [datapath.ofproto_parser.OFPActionOutput(out_port)]
# install a flow to avoid packet_in next time
if out_port != ofproto.OFPP_FLOOD:
self.add_flow(datapath, msg.in_port, dst, actions)
out = datapath.ofproto_parser.OFPPacketOut(
datapath=datapath, buffer_id=msg.buffer_id, in_port=msg.in_port,
actions=actions)
datapath.send_msg(out)
def match_eth_to_str(value, mask):
eth_str = mac.haddr_to_str(value)
if mask is not None:
eth_str = eth_str + '/' + mac.haddr_to_str(mask)
return eth_str
def _forward_to_nw_id(self, msg, src, dst, nw_id, out_port):
assert out_port is not None
datapath = msg.datapath
if not self.nw.same_network(datapath.id, nw_id, out_port, NW_ID_EXTERNAL):
self.logger.debug(
"packet is blocked src %s dst %s " "from %d to %d on datapath %d",
haddr_to_str(src),
haddr_to_str(dst),
msg.in_port,
out_port,
datapath.id,
)
return
self.logger.debug(
"learned dpid %s in_port %d out_port " "%d src %s dst %s",
datapath.id,
msg.in_port,
out_port,
haddr_to_str(src),
haddr_to_str(dst),
)
actions = [datapath.ofproto_parser.OFPActionOutput(out_port)]
self._modflow_and_send_packet(msg, src, dst, actions)
def switch_configuration(self, ev):
print "Packet in: switch configuration"
msg = ev.msg
datapath = msg.datapath
ofproto = datapath.ofproto
dst, src, _eth_type = struct.unpack_from('!6s6sH', buffer(msg.data), 0)
dpid = datapath.id
self.mac2port.dpid_add(dpid)
LOG.info("Src MAC: %s; Dest MAC: %s", haddr_to_str(src), haddr_to_str(dst))
self.mac2port.port_add(dpid, msg.in_port, src)
out_port = self.mac2port.port_get(dpid, dst)
if out_port == None:
LOG.info("Output port not found")
out_port = ofproto.OFPP_FLOOD
actions = [datapath.ofproto_parser.OFPActionOutput(out_port)]
LOG.info("Input port: %s; Output port: %s", msg.in_port, out_port)
if out_port != ofproto.OFPP_FLOOD:
rule = nx_match.ClsRule()
rule.set_in_port(msg.in_port)
rule.set_dl_dst(dst)
rule.set_dl_src(src)
rule.set_nw_dscp(0)
datapath.send_flow_mod(
rule=rule, cookie=0, command=ofproto.OFPFC_ADD,
idle_timeout=0, hard_timeout=0,
priority=ofproto.OFP_DEFAULT_PRIORITY,
flags=ofproto.OFPFF_SEND_FLOW_REM, actions=actions)
datapath.send_packet_out(msg.buffer_id, msg.in_port, actions)
def actions_to_str(acts):
actions = []
for a in acts:
action_type = a.cls_action_type
if action_type == ofproto_v1_0.OFPAT_OUTPUT:
buf = 'OUTPUT:' + str(a.port)
elif action_type == ofproto_v1_0.OFPAT_SET_VLAN_VID:
buf = 'SET_VLAN_VID:' + str(a.vlan_vid)
elif action_type == ofproto_v1_0.OFPAT_SET_VLAN_PCP:
buf = 'SET_VLAN_PCP:' + str(a.vlan_pcp)
elif action_type == ofproto_v1_0.OFPAT_STRIP_VLAN:
buf = 'STRIP_VLAN'
elif action_type == ofproto_v1_0.OFPAT_SET_DL_SRC:
buf = 'SET_DL_SRC:' + haddr_to_str(a.dl_addr)
elif action_type == ofproto_v1_0.OFPAT_SET_DL_DST:
buf = 'SET_DL_DST:' + haddr_to_str(a.dl_addr)
elif action_type==65535:
if a.subtype==2:
buf = 'set_tunnel:'+str(a.tun_id)
else:
buf='resubmit:(,'+str(a.table)+')'
else:
buf='UNKNOWN'
actions.append(buf)
return actions
def packet_in_handler(self, ev):
msg = ev.msg
datapath = msg.datapath
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
in_port = msg.match['in_port']
dst, src, eth_type = struct.unpack_from('!6s6sH', buffer(msg.data), 0)
match = msg.match.fields
#for field in match:
#logger.info("FIELDS==> %s ",field.value)
logger.info("")
logger.info("----------------------------------------")
logger.info("*** PacketIn ***")
logger.info("in_port=%d, eth_type: %s", in_port, hex(eth_type))
logger.info("packet reason=%d buffer_id=%d", msg.reason, msg.buffer_id)
logger.info("packet in datapath_id=%s src=%s dst=%s",
msg.datapath.id, haddr_to_str(src), haddr_to_str(dst))
pkt = packet.Packet(msg.data) # get data of packet
eth = pkt.get_protocols(ethernet.ethernet)[0]
if eth.ethertype == ether_types.ETH_TYPE_LLDP:
# ignore lldp packet
return
dst = eth.dst
src = eth.src
dpid = datapath.id
self.mac_to_port.setdefault(dpid, {})
# learn a mac address to avoid FLOOD next time.
self.mac_to_port[dpid][src] = in_port
if dst in self.mac_to_port[dpid]:
out_port = self.mac_to_port[dpid][dst]
else:
out_port = ofproto.OFPP_FLOOD
actions = [parser.OFPActionOutput(out_port)]
# install a flow to avoid packet_in next time
if out_port != ofproto.OFPP_FLOOD:
match = parser.OFPMatch(in_port=in_port, eth_dst=dst)
# verify if we have a valid buffer_id, if yes avoid to send both
# flow_mod & packet_out
if msg.buffer_id != ofproto.OFP_NO_BUFFER:
self.add_flow(datapath, 1, match, actions, msg.buffer_id)
return
else:
self.add_flow(datapath, 1, match, actions)
data = None
if msg.buffer_id == ofproto.OFP_NO_BUFFER:
data = msg.data
out = parser.OFPPacketOut(datapath=datapath, buffer_id=msg.buffer_id,
in_port=in_port, actions=actions, data=data)
datapath.send_msg(out)
def _packet_in_handler(self, ev):
msg = ev.msg
datapath = msg.datapath
ofproto = datapath.ofproto
dst, src, _eth_type = struct.unpack_from('!6s6sH', buffer(msg.data), 0)
dpid = datapath.id
self.mac_to_port.setdefault(dpid, {})
match = msg.match
in_port = 0
#iterate through fields - parser should handle this
#packet in dpid 20015998343868 from 08:00:27:15:d4:53 to ff:ff:ff:ff:ff:ff log_port 0 phy_port 0
#Field MTInPort(header=2147483652,length=8,n_bytes=4,value=2)
#Field MTEthType(header=2147486210,length=6,n_bytes=2,value=2054)
#Field MTArpOp(header=2147494402,length=6,n_bytes=2,value=1)
#Field MTMetadata(header=2147484680,length=12,n_bytes=8,value=18446744073709551615L)
#Field MTArpSha(header=2147495942,length=10,n_bytes=6,value="\x08\x00'\x15\xd4S")
#Field MTEthDst(header=2147485190,length=10,n_bytes=6,value='\xff\xff\xff\xff\xff\xff')
#Field MTArpSpa(header=2147494916,length=8,n_bytes=4,value=167772161)
#Field MTArpTha(header=2147496454,length=10,n_bytes=6,value='\x00\x00\x00\x00\x00\x00')
for o in match.fields:
if isinstance(o, ofproto_v1_2_parser.MTInPort):
in_port = o.value
break
self.logger.info("packet in dpid %s from %s to %s log_port %s",
dpid, haddr_to_str(src), haddr_to_str(dst),
in_port)
# do we know the mac?
if src not in self.mac_to_port[dpid]:
# learn the mac address to avoid FLOOD next time.
self.mac_to_port[dpid][src] = in_port
# set a flow to table 0 to allow packets through to table 1
match = datapath.ofproto_parser.OFPMatch()
match.set_in_port(in_port)
match.set_dl_src(src)
instructions = [datapath.ofproto_parser.OFPInstructionGotoTable(1)]
self.add_flow(datapath, 0, match, instructions)
if dst in self.mac_to_port[dpid]:
out_port = self.mac_to_port[dpid][dst]
actions = [datapath.ofproto_parser.OFPActionOutput(out_port, 1500)]
match = datapath.ofproto_parser.OFPMatch()
match.set_dl_dst(dst)
instructions = [datapath.ofproto_parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions)]
self.add_flow(datapath, 1, match, instructions, buffer_id=msg.buffer_id)
else:
out_port = ofproto_v1_2.OFPP_FLOOD
actions = [datapath.ofproto_parser.OFPActionOutput(out_port, 1500)]
out = datapath.ofproto_parser.OFPPacketOut(
datapath=datapath, buffer_id=msg.buffer_id, in_port=in_port,
actions=actions)
datapath.send_msg(out)
def _packet_in_handler(self, ev):
msg = ev.msg
datapath = msg.datapath
ofproto = datapath.ofproto
dst, src, _eth_type = struct.unpack_from('!6s6sH', buffer(msg.data), 0)
dpid = datapath.id
print 'mac_to_port',self.mac_to_port,'\n'
self.mac_to_port.setdefault(dpid, {})
print 'mac_to_port',self.mac_to_port,'\n'
LOG.info("packet in %s %s %s %s",
dpid, haddr_to_str(src), haddr_to_str(dst), msg.in_port)
# learn a mac address to avoid FLOOD next time.
self.mac_to_port[dpid][src] = msg.in_port
if dst in self.mac_to_port[dpid]:
out_port = self.mac_to_port[dpid][dst]
else:
out_port = ofproto.OFPP_FLOOD
actions = [datapath.ofproto_parser.OFPActionOutput(out_port)]
if out_port != ofproto.OFPP_FLOOD:
#self.add_flow(datapath, msg.in_port, dst, [datapath.ofproto_parser.OFPActionOutput(datapath.ofproto.OFPP_NORMAL)])
self.add_flow(datapath, msg.in_port, dst, actions)
#add a ipv6 flow table:
if _eth_type == ether.ETH_TYPE_IPV6:
#print _eth_type
pkt = Packet(array('B',msg.data))
for packet in pkt:
if isinstance(packet,array):
pass
else:
if packet.protocol_name=='ipv6':
ipv6_packet=packet
else:
pass
ipv6_src=self._binary_to_ipv6_format(ipv6_packet.src)
ipv6_dst=self._binary_to_ipv6_format(ipv6_packet.dst)
print ipv6_src,ipv6_dst
'''
# judge if src and dst addr is special
# eg: src [0,0,0,0] dst begin with 0xff01 or 0x ff02
if ipv6_src == [0,0,0,0] or ipv6_dst[0]&0xff010000 == 0xff010000 or ipv6_dst[0]&0xff020000 == 0xff020000:
print 'ipv6 reserved address\n'
#elif ipv6_dst[0]&0xfe800000 == 0xfe800000:
# print 'ipv6 dst address is Link-Local address'
else:
'''
rule={'ipv6_src':ipv6_src,'ipv6_dst':ipv6_dst}
self.nx_ipv6_add_flow(datapath,rule,actions)
print 'add a ipv6 flow entry'
out = datapath.ofproto_parser.OFPPacketOut(
datapath=datapath, buffer_id=msg.buffer_id, in_port=msg.in_port,
actions=actions)
datapath.send_msg(out)
def packet_in_handler(self, ev):
msg = ev.msg
dst, src, eth_type = struct.unpack_from('!6s6sH', buffer(msg.data), 0)
in_port = msg.match.fields[0].value
LOG.info("----------------------------------------")
LOG.info("* PacketIn")
LOG.info("in_port=%d, eth_type: %s", in_port, hex(eth_type))
LOG.info("packet reason=%d buffer_id=%d", msg.reason, msg.buffer_id)
LOG.info("packet in datapath_id=%s src=%s dst=%s",
msg.datapath.id, haddr_to_str(src), haddr_to_str(dst))
def _flood_to_nw_id(self, msg, src, dst, nw_id):
datapath = msg.datapath
actions = []
self.logger.debug("dpid %s in_port %d src %s dst %s ports %s",
datapath.id, msg.in_port,
haddr_to_str(src), haddr_to_str(dst),
self.nw.dpids.get(datapath.id, {}).items())
for port_no in self.nw.filter_ports(datapath.id, msg.in_port,
nw_id, NW_ID_EXTERNAL):
self.logger.debug("port_no %s", port_no)
actions.append(datapath.ofproto_parser.OFPActionOutput(port_no))
self._modflow_and_send_packet(msg, src, dst, actions)
def match_to_str(m):
return {'dl_dst': haddr_to_str(m.dl_dst),
'dl_src': haddr_to_str(m.dl_src),
'dl_type': m.dl_type,
'dl_vlan': m.dl_vlan,
'dl_vlan_pcp': m.dl_vlan_pcp,
'in_port': m.in_port,
'nw_dst': socket.inet_ntoa(struct.pack('!I', m.nw_dst)),
'nw_proto': m.nw_proto,
'nw_src': socket.inet_ntoa(struct.pack('!I', m.nw_src)),
'tp_src': m.tp_src,
'tp_dst': m.tp_dst}
def match_to_str(m):
return {'dl_dst': haddr_to_str(m.dl_dst),
'dl_src': haddr_to_str(m.dl_src),
'dl_type': m.dl_type,
'dl_vlan': m.dl_vlan,
'dl_vlan_pcp': m.dl_vlan_pcp,
'in_port': m.in_port,
'nw_dst': nw_dst_to_str(m.wildcards, m.nw_dst),
'nw_proto': m.nw_proto,
'nw_src': nw_src_to_str(m.wildcards, m.nw_src),
'tp_src': m.tp_src,
'tp_dst': m.tp_dst}
def _decode_bridge_id(bridge_id):
priority = (bridge_id << 12) & 0xf000
system_id_extension = (bridge_id >> 4) & 0xfff
mac_addr = (bridge_id >> 16) & 0xffffffffffff
mac_addr_list = [format((mac_addr >> (8 * i)) & 0xff, '02x')
for i in range(0, 6)]
mac_address = binascii.a2b_hex(''.join(mac_addr_list))
#TODO:
from ryu.lib import mac
print mac.haddr_to_str(mac_address)
return priority, system_id_extension, mac_address
def equal_match(key, value, cls_name, fields):
for field in fields:
if cls_name in str(field):
if key in ['dl_src', 'dl_dst', 'arp_sha', 'arp_tha',
'eth_src', 'eth_dst']:
eth, mask = _to_match_eth(value)
str_eth = mac.haddr_to_str(eth)
str_mask = mac.haddr_to_str(mask)
str_value = mac.haddr_to_str(field.value)
for i in range(0, 17):
if str_mask[i] == 'f':
eq_(str_eth[i], str_value[i])
else:
continue
eq_(mask, field.mask)
return
elif key in ['nw_src', 'nw_dst', 'ipv4_src', 'ipv4_dst',
'arp_spa', 'arp_tpa']:
ipv4, mask = _to_match_ip(value)
eq_(ipv4, field.value)
eq_(mask, field.mask)
return
elif key in ['ipv6_src', 'ipv6_dst']:
ipv6, mask = _to_match_ipv6(value)
for i in range(0, 8):
if mask[i] == 65535:
eq_(ipv6[i], field.value[i])
else:
continue
eq_(list(mask), field.mask)
return
elif key == 'ipv6_nd_target':
ipv6, mask = _to_match_ipv6(value)
for i in range(0, 8):
if mask[i] == 65535:
eq_(ipv6[i], field.value[i])
else:
continue
return
elif key == 'ipv6_nd_sll' or key == 'ipv6_nd_tll':
eq_(mac.haddr_to_bin(value), field.value)
return
elif key == 'metadata':
eq_(int(value, 16), field.value)
return
else:
eq_(value, field.value)
return
assert False
def test_to_string(self):
nd_opt = icmpv6.nd_option_la(self.nd_hw_src)
nd = icmpv6.nd_neighbor(
self.res, self.dst, self.nd_type, self.nd_length, nd_opt)
ic = icmpv6.icmpv6(self.type_, self.code, self.csum, nd)
nd_opt_values = {'hw_src': haddr_to_str(self.nd_hw_src),
'data': None}
_nd_opt_str = ','.join(['%s=%s' % (k, repr(nd_opt_values[k]))
for k, v in inspect.getmembers(nd_opt)
if k in nd_opt_values])
nd_opt_str = '%s(%s)' % (icmpv6.nd_option_la.__name__, _nd_opt_str)
nd_values = {'res': repr(nd.res),
'dst': repr(ipv6_to_str(self.dst)),
'type_': repr(self.nd_type),
'length': repr(self.nd_length),
'data': nd_opt_str}
_nd_str = ','.join(['%s=%s' % (k, nd_values[k])
for k, v in inspect.getmembers(nd)
if k in nd_values])
nd_str = '%s(%s)' % (icmpv6.nd_neighbor.__name__, _nd_str)
icmp_values = {'type_': repr(self.type_),
'code': repr(self.code),
'csum': repr('0x%x' % self.csum),
'data': nd_str}
_ic_str = ','.join(['%s=%s' % (k, icmp_values[k])
for k, v in inspect.getmembers(ic)
if k in icmp_values])
ic_str = '%s(%s)' % (icmpv6.icmpv6.__name__, _ic_str)
eq_(str(ic), ic_str)
eq_(repr(ic), ic_str)
def to_dict(self):
return {
"dpid": dpid_to_str(self.dpid),
"port_no": port_no_to_str(self.port_no),
"hw_addr": haddr_to_str(self.hw_addr),
"name": self.name.rstrip("\0"),
}
def match_to_str(ofmatch):
keys = {
ofproto_v1_3.OXM_OF_IN_PORT: 'in_port',
ofproto_v1_3.OXM_OF_ETH_SRC: 'dl_src',
ofproto_v1_3.OXM_OF_ETH_DST: 'dl_dst',
ofproto_v1_3.OXM_OF_ETH_TYPE: 'dl_type',
ofproto_v1_3.OXM_OF_VLAN_VID: 'dl_vlan',
ofproto_v1_3.OXM_OF_IPV4_SRC: 'nw_src',
ofproto_v1_3.OXM_OF_IPV4_DST: 'nw_dst',
ofproto_v1_3.OXM_OF_IPV4_SRC_W: 'nw_src',
ofproto_v1_3.OXM_OF_IPV4_DST_W: 'nw_dst',
ofproto_v1_3.OXM_OF_IP_PROTO: 'nw_proto',
ofproto_v1_3.OXM_OF_TCP_SRC: 'tp_src',
ofproto_v1_3.OXM_OF_TCP_DST: 'tp_dst',
ofproto_v1_3.OXM_OF_UDP_SRC: 'tp_src',
ofproto_v1_3.OXM_OF_UDP_DST: 'tp_dst'
}
match = {}
for match_field in ofmatch.fields:
key = keys[match_field.header]
if key == 'dl_src' or key == 'dl_dst':
value = mac.haddr_to_str(match_field.value)
elif key == 'nw_src' or key == 'nw_dst':
value = match_ip_to_str(match_field.value, match_field.mask)
else:
value = match_field.value
match.setdefault(key, value)
return match
def to_dict(self):
return {
'dpid': dpid_to_str(self.dpid),
'port_no': port_no_to_str(self.port_no),
'hw_addr': haddr_to_str(self.hw_addr),
'name': self.name.rstrip('\0')
}
def to_rest(openflow):
of_match = openflow[REST_MATCH]
mac_dontcare = mac.haddr_to_str(mac.DONTCARE)
ip_dontcare = '0.0.0.0'
ipv6_dontcare = '::'
match = {}
for key, value in of_match.items():
if key == REST_SRC_MAC or key == REST_DST_MAC:
if value == mac_dontcare:
continue
elif key == REST_SRC_IP or key == REST_DST_IP:
if value == ip_dontcare:
continue
elif key == REST_SRC_IPV6 or key == REST_DST_IPV6:
if value == ipv6_dontcare:
continue
elif value == 0:
continue
if key in Match._CONVERT:
conv = Match._CONVERT[key]
conv = dict((value, key) for key, value in conv.items())
match.setdefault(key, conv[value])
else:
match.setdefault(key, value)
return match
def to_rest(openflow):
of_match = openflow[REST_MATCH]
mac_dontcare = mac.haddr_to_str(mac.DONTCARE)
ip_dontcare = '0.0.0.0'
match = {}
for key, value in of_match.items():
if key == REST_SRC_MAC or key == REST_DST_MAC:
if value == mac_dontcare:
continue
elif key == REST_SRC_IP or key == REST_DST_IP:
if value == ip_dontcare:
continue
elif value == 0:
continue
if key in Match._CONVERT:
conv = Match._CONVERT[key]
conv = dict((value, key) for key, value in conv.items())
match.setdefault(key, conv[value])
else:
match.setdefault(key, value)
return match
def block_out_sample_in(self, stats):
ofproto = datapath.ofproto
#SRC BLOCK FLOW
src_mac = stats.match.dl_dst
if not src_mac == self.gateway_mac:
src_match = datapath.ofproto_parser.OFPMatch(dl_src=src_mac, dl_dst=self.gateway_mac)
src_flow = datapath.ofproto_parser.OFPFlowMod(
datapath=datapath, match=src_match, cookie=random_int(),
command=ofproto.OFPFC_ADD, idle_timeout=0, hard_timeout=2,
priority=0x6000,
flags=ofproto.OFPFF_SEND_FLOW_REM)
datapath.send_msg(src_flow)
eventlet.sleep(0.1)
# DST BLOCK FLOW - We only sample this flow for 1 second,
# Destination does not receive anything.
dst_mac = stats.match.dl_dst
if not dst_mac == self.gateway_mac:
dst_match = datapath.ofproto_parser.OFPMatch(dl_src=self.gateway_mac, dl_dst=dst_mac)
dst_actions = [datapath.ofproto_parser.OFPActionOutput(monitor_port)]
dst_flow = datapath.ofproto_parser.OFPFlowMod(
datapath=datapath, match=dst_match, cookie=random_int(),
command=ofproto.OFPFC_ADD, idle_timeout=0, hard_timeout=1,
priority=0x6000,
flags=ofproto.OFPFF_SEND_FLOW_REM, actions=dst_actions)
datapath.send_msg(dst_flow)
#Notify parser of this source/destination being blocked from this point on.
outgoing_block_mode_v1_dict[(haddr_to_str(src_mac))] = int(time.time() * 1000)
def test_mac_haddr_to_str(self):
addr = 'aa:aa:aa:aa:aa:aa'
val = '\xaa\xaa\xaa\xaa\xaa\xaa'
res = mac.haddr_to_str(val)
eq_(addr, res)
def test_mac_haddr_to_str(self):
addr = "aa:aa:aa:aa:aa:aa"
val = b"\xaa\xaa\xaa\xaa\xaa\xaa"
res = mac.haddr_to_str(val)
eq_(addr, res)
def match_to_str(ofmatch):
keys = {ofproto_v1_3.OXM_OF_IN_PORT: 'in_port',
ofproto_v1_3.OXM_OF_ETH_SRC: 'dl_src',
ofproto_v1_3.OXM_OF_ETH_DST: 'dl_dst',
ofproto_v1_3.OXM_OF_ETH_TYPE: 'dl_type',
ofproto_v1_3.OXM_OF_VLAN_VID: 'dl_vlan',
ofproto_v1_3.OXM_OF_IPV4_SRC: 'nw_src',
ofproto_v1_3.OXM_OF_IPV4_DST: 'nw_dst',
ofproto_v1_3.OXM_OF_IPV4_SRC_W: 'nw_src',
ofproto_v1_3.OXM_OF_IPV4_DST_W: 'nw_dst',
ofproto_v1_3.OXM_OF_IP_PROTO: 'nw_proto',
ofproto_v1_3.OXM_OF_TCP_SRC: 'tp_src',
ofproto_v1_3.OXM_OF_TCP_DST: 'tp_dst',
ofproto_v1_3.OXM_OF_UDP_SRC: 'tp_src',
ofproto_v1_3.OXM_OF_UDP_DST: 'tp_dst',
ofproto_v1_3.OXM_OF_METADATA: 'metadata',
ofproto_v1_3.OXM_OF_METADATA_W: 'metadata'}
match = {}
for match_field in ofmatch.fields:
key = keys[match_field.header]
if key == 'dl_src' or key == 'dl_dst':
value = mac.haddr_to_str(match_field.value)
elif key == 'nw_src' or key == 'nw_dst':
value = match_ip_to_str(match_field.value, match_field.mask)
elif key == 'metadata':
value = ('%d/%d' % (match_field.value, match_field.mask)
if match_field.mask else '%d' % match_field.value)
else:
value = match_field.value
match.setdefault(key, value)
return match
def test_mac_haddr_to_str_none(self):
""" addr is None
"""
addr = None
val = 'None'
res = mac.haddr_to_str(addr)
eq_(val, res)
def packet_in_handler(self, ev):
msg = ev.msg
datapath = msg.datapath
port = msg.match['in_port']
pkt = packet.Packet(data=msg.data)
ofproto = datapath.ofproto
dst, src, _eth_type = struct.unpack_from('!6s6sH', buffer(msg.data), 0)
dpid = datapath.id
self.mac_to_port.setdefault(dpid, {})
self.logger.debug("packet in %s %s %s %s", dpid, haddr_to_str(src),
haddr_to_str(dst), msg.in_port)
# learn a mac address to avoid FLOOD next time.
self.mac_to_port[dpid][src] = msg.in_port
if dst in self.mac_to_port[dpid]:
out_port = self.mac_to_port[dpid][dst]
else:
out_port = ofproto.OFPP_FLOOD
actions = [datapath.ofproto_parser.OFPActionOutput(out_port)]
# install a flow to avoid packet_in next time
if out_port != ofproto.OFPP_FLOOD:
self.add_flow(datapath, msg.in_port, dst, actions)
if drop_checker[port] == True:
self.delete_flow(datapath)
out = datapath.ofproto_parser.OFPPacketOut(datapath=datapath,
buffer_id=msg.buffer_id,
in_port=msg.in_port,
actions=actions)
datapath.send_msg(out)
pkt_dhcp = pkt.get_protocols(dhcp.dhcp)
if not pkt_dhcp:
return
else:
drop_checker[port] = False
self._handle_dhcp(datapath, port, pkt)
return
def test_mac_haddr_to_str_none(self):
""" addr is None
"""
addr = None
val = "None"
res = mac.haddr_to_str(addr)
eq_(val, res)
def _forward_to_nw_id(self, msg, src, dst, nw_id, out_port):
assert out_port is not None
datapath = msg.datapath
if not self.nw.same_network(datapath.id, nw_id, out_port,
NW_ID_EXTERNAL):
LOG.debug(
'packet is blocked src %s dst %s '
'from %d to %d on datapath %d', haddr_to_str(src),
haddr_to_str(dst), msg.in_port, out_port, datapath.id)
return
LOG.debug("learned dpid %s in_port %d out_port %d src %s dst %s",
datapath.id, msg.in_port, out_port, haddr_to_str(src),
haddr_to_str(dst))
actions = [datapath.ofproto_parser.OFPActionOutput(out_port)]
self._modflow_and_send_packet(msg, src, dst, actions)
def match_to_str(ofmatch):
keys = {ofproto_v1_2.OXM_OF_IN_PORT: 'in_port',
ofproto_v1_2.OXM_OF_IN_PHY_PORT: 'in_phy_port',
ofproto_v1_2.OXM_OF_ETH_SRC: 'dl_src',
ofproto_v1_2.OXM_OF_ETH_DST: 'dl_dst',
ofproto_v1_2.OXM_OF_ETH_TYPE: 'dl_type',
ofproto_v1_2.OXM_OF_VLAN_VID: 'dl_vlan',
ofproto_v1_2.OXM_OF_VLAN_PCP: 'vlan_pcp',
ofproto_v1_2.OXM_OF_IP_DSCP: 'ip_dscp',
ofproto_v1_2.OXM_OF_IP_ECN: 'ip_ecn',
ofproto_v1_2.OXM_OF_IPV4_SRC: 'nw_src',
ofproto_v1_2.OXM_OF_IPV4_DST: 'nw_dst',
ofproto_v1_2.OXM_OF_IPV4_SRC_W: 'nw_src',
ofproto_v1_2.OXM_OF_IPV4_DST_W: 'nw_dst',
ofproto_v1_2.OXM_OF_IP_PROTO: 'nw_proto',
ofproto_v1_2.OXM_OF_TCP_SRC: 'tp_src',
ofproto_v1_2.OXM_OF_TCP_DST: 'tp_dst',
ofproto_v1_2.OXM_OF_UDP_SRC: 'tp_src',
ofproto_v1_2.OXM_OF_UDP_DST: 'tp_dst',
ofproto_v1_2.OXM_OF_SCTP_SRC: 'sctp_src',
ofproto_v1_2.OXM_OF_SCTP_DST: 'sctp_dst',
ofproto_v1_2.OXM_OF_ICMPV4_TYPE: 'icmpv4_type',
ofproto_v1_2.OXM_OF_ICMPV4_CODE: 'icmpv4_code',
ofproto_v1_2.OXM_OF_MPLS_LABEL: 'mpls_label',
ofproto_v1_2.OXM_OF_MPLS_TC: 'mpls_tc',
ofproto_v1_2.OXM_OF_ARP_OP: 'arp_op',
ofproto_v1_2.OXM_OF_ARP_SPA: 'arp_spa',
ofproto_v1_2.OXM_OF_ARP_TPA: 'arp_tpa',
ofproto_v1_2.OXM_OF_ARP_SPA_W: 'arp_spa',
ofproto_v1_2.OXM_OF_ARP_TPA_W: 'arp_tpa',
ofproto_v1_2.OXM_OF_ARP_SHA: 'arp_sha',
ofproto_v1_2.OXM_OF_ARP_THA: 'arp_tha',
ofproto_v1_2.OXM_OF_IPV6_SRC: 'ipv6_src',
ofproto_v1_2.OXM_OF_IPV6_DST: 'ipv6_dst',
ofproto_v1_2.OXM_OF_IPV6_SRC_W: 'ipv6_src',
ofproto_v1_2.OXM_OF_IPV6_DST_W: 'ipv6_dst',
ofproto_v1_2.OXM_OF_IPV6_FLABEL: 'ipv6_flabel',
ofproto_v1_2.OXM_OF_ICMPV6_TYPE: 'icmpv6_type',
ofproto_v1_2.OXM_OF_ICMPV6_CODE: 'icmpv6_code',
ofproto_v1_2.OXM_OF_IPV6_ND_TARGET: 'ipv6_nd_target',
ofproto_v1_2.OXM_OF_IPV6_ND_SLL: 'ipv6_nd_sll',
ofproto_v1_2.OXM_OF_IPV6_ND_TLL: 'ipv6_nd_tll'}
match = {}
for match_field in ofmatch.fields:
key = keys[match_field.header]
if key == 'dl_src' or key == 'dl_dst':
value = mac.haddr_to_str(match_field.value)
elif key == 'nw_src' or key == 'nw_dst' or \
key == 'arp_spa' or key == 'arp_tpa':
value = match_ip_to_str(match_field.value, match_field.mask)
elif key == 'ipv6_src' or key == 'ipv6_dst':
value = match_ipv6_to_str(match_field.value, match_field.mask)
else:
value = match_field.value
match.setdefault(key, value)
return match
def _port_del(self, ev):
# free mac addresses associated to this VM port,
# and delete related flow entries for later reuse of mac address
dps_needs_barrier = set()
msg = ev.msg
datapath = msg.datapath
datapath_id = datapath.id
port_no = msg.desc.port_no
rule = nx_match.ClsRule()
rule.set_in_port(port_no)
datapath.send_flow_del(rule=rule, cookie=0)
rule = nx_match.ClsRule()
datapath.send_flow_del(rule=rule, cookie=0, out_port=port_no)
dps_needs_barrier.add(datapath)
try:
port_nw_id = self.nw.get_network(datapath_id, port_no)
except PortUnknown:
# race condition between rest api delete port
# and openflow port deletion ofp_event
pass
else:
if port_nw_id in (NW_ID_UNKNOWN, NW_ID_EXTERNAL):
datapath.send_barrier()
return
for mac_ in self.mac2port.mac_list(datapath_id, port_no):
for (_dpid, dp) in self.dpset.get_all():
if self.mac2port.port_get(dp.id, mac_) is None:
continue
rule = nx_match.ClsRule()
rule.set_dl_src(mac_)
dp.send_flow_del(rule=rule, cookie=0)
rule = nx_match.ClsRule()
rule.set_dl_dst(mac_)
dp.send_flow_del(rule=rule, cookie=0)
dps_needs_barrier.add(dp)
self.mac2port.mac_del(dp.id, mac_)
try:
self.mac2net.del_mac(mac_)
self.api_db.delMAC(haddr_to_str(mac_))
except MacAddressNotFound:
# Race condition between del_mac REST API and OF port_del ofp_event
# Other possibility is that Ryu has been restarted after a crash
pass
self.nw.port_deleted(datapath.id, port_no)
for dp in dps_needs_barrier:
dp.send_barrier()
def __str__(self):
return "EventVMPort<dpid %s port_no %d " "network_id %s tunnel_key %s mac %s add_del %s>" % (
dpid_lib.dpid_to_str(self.dpid),
self.port_no,
self.network_id,
self.tunnel_key,
mac.haddr_to_str(self.mac_address),
self.add_del,
)
def lists(self, _req, network_id, dpid, port_id, **_kwargs):
dpid = dpid_lib.str_to_dpid(dpid)
port_id = int(port_id)
try:
body = json.dumps([mac_lib.haddr_to_str(mac_addr) for mac_addr in
self.nw.list_mac(dpid, port_id)])
except PortNotFound:
return Response(status=404)
return Response(content_type='application/json', body=body)
def get_eth_src(msg):
dp = msg.datapath
eth_src = None
for f in msg.match.fields:
if f.header == dp.ofproto.OXM_OF_ETH_SRC:
eth_src = haddr_to_str(f.value)
if eth_src is None:
eth_src = Ether(str(msg.data)).src
return eth_src
def packet_in_handler(self, ev):
msg = ev.msg
datapath = msg.datapath
ofproto = datapath.ofproto
pkt = packet.Packet(msg.data)
eth = pkt.get_protocol(ethernet.ethernet)
dst, src, _eth_type = struct.unpack_from('!6s6sH', buffer(msg.data), 0)
dpid = datapath.id
self.mac_to_port.setdefault(dpid, {})
self.logger.debug("packet in %s %s %s %s",
dpid, haddr_to_str(src), haddr_to_str(dst),
msg.in_port)
self.logger.info("===============Message: %d================", self.msg_num)
self.logger.info("packet in %s %s %s %s", dpid, eth.src, eth.dst, msg.in_port)
self.logger.info("src: %s, out_port: %s", eth.src, msg.in_port)
self.logger.info("------------------------------------")
# learn a mac address to avoid FLOOD next time.
self.mac_to_port[dpid][src] = msg.in_port
if dst in self.mac_to_port[dpid]:
out_port = self.mac_to_port[dpid][dst]
else:
out_port = ofproto.OFPP_FLOOD
actions = [datapath.ofproto_parser.OFPActionOutput(out_port)]
# install a flow to avoid packet_in next time
if out_port != ofproto.OFPP_FLOOD:
self.add_flow(datapath, msg.in_port, dst, actions)
out = datapath.ofproto_parser.OFPPacketOut(
datapath=datapath, buffer_id=msg.buffer_id, in_port=msg.in_port,
actions=actions)
self.msg_num += 1
self.logger.info("===========================================")
datapath.send_msg(out)
def lists(self, _req, network_id, dpid, port_id, **_kwargs):
dpid = dpid_lib.str_to_dpid(dpid)
port_id = int(port_id)
try:
body = json.dumps([mac_lib.haddr_to_str(mac_addr) for mac_addr in
self.nw.list_mac(dpid, port_id)])
except PortNotFound:
return Response(status=404)
return Response(content_type='application/json', body=body)
def add_mac(self, mac, nw_id, nw_id_external=None):
_nw_id = self.mac_to_net.get(mac)
if _nw_id == nw_id:
return
# allow changing from nw_id_external to known nw id
if _nw_id is None or _nw_id == nw_id_external:
self.mac_to_net[mac] = nw_id
LOG.debug("overwrite nw_id: mac %s nw old %s new %s", haddr_to_str(mac), _nw_id, nw_id)
return
if nw_id == nw_id_external:
# this can happens when the packet traverses
# VM-> tap-> ovs-> ext-port-> wire-> ext-port-> ovs-> tap-> VM
return
LOG.warn("duplicated nw_id: mac %s nw old %s new %s", haddr_to_str(mac), _nw_id, nw_id)
raise MacAddressDuplicated(mac=mac)
def equal_str(key, value, match_str):
if key in ['dl_src', 'dl_dst', 'arp_sha', 'arp_tha']:
eth_1, mask_1 = _to_match_eth(value)
eth_2, mask_2 = _to_match_eth(match_str[key])
str_eth_1 = mac.haddr_to_str(eth_1)
str_mask_1 = mac.haddr_to_str(mask_1)
str_eth_2 = mac.haddr_to_str(eth_2)
for i in range(0, 17):
if str_mask_1[i] == 'f':
eq_(str_eth_1[i], str_eth_2[i])
else:
continue
eq_(mask_1, mask_2)
return
elif key in['nw_src', 'nw_dst', 'arp_spa', 'arp_tpa']:
ipv4_1, ip_mask_1 = _to_match_ip(value)
ipv4_2, ip_mask_2 = _to_match_ip(match_str[key])
eq_(ipv4_1, ipv4_2)
eq_(ip_mask_1, ip_mask_2)
return
elif key in ['ipv6_src', 'ipv6_dst']:
ipv6_1, netmask_1 = _to_match_ipv6(value)
ipv6_2, netmask_2 = _to_match_ipv6(match_str[key])
for i in range(0, 8):
if netmask_1[i] == 65535:
eq_(ipv6_1[i], ipv6_2[i])
else:
continue
eq_(netmask_1, netmask_2)
return
elif key == 'ipv6_nd_target':
ipv6_1, netmask_1 = _to_match_ipv6(value)
ipv6_2, netmask_2 = _to_match_ipv6(match_str[key])
for i in range(0, 8):
if netmask_1[i] == 65535:
eq_(ipv6_1[i], ipv6_2[i])
else:
continue
return
elif key == 'metadata':
eq_(str(int(value, 16)), match_str[key])
return
eq_(value, match_str[key])
def match_to_str(m):
match = {}
if ~m.wildcards & ofproto_v1_0.OFPFW_IN_PORT:
match['in_port'] = m.in_port
if ~m.wildcards & ofproto_v1_0.OFPFW_DL_SRC:
match['dl_src'] = haddr_to_str(m.dl_src)
if ~m.wildcards & ofproto_v1_0.OFPFW_DL_DST:
match['dl_dst'] = haddr_to_str(m.dl_dst)
if ~m.wildcards & ofproto_v1_0.OFPFW_DL_VLAN:
match['dl_vlan'] = m.dl_vlan
if ~m.wildcards & ofproto_v1_0.OFPFW_DL_VLAN_PCP:
match['dl_vlan_pcp'] = m.dl_vlan_pcp
if ~m.wildcards & ofproto_v1_0.OFPFW_DL_TYPE:
match['dl_type'] = m.dl_type
if ~m.wildcards & ofproto_v1_0.OFPFW_NW_TOS:
match['nw_tos'] = m.nw_tos
if ~m.wildcards & ofproto_v1_0.OFPFW_NW_PROTO:
match['nw_proto'] = m.nw_proto
if ~m.wildcards & ofproto_v1_0.OFPFW_NW_SRC_ALL:
match['nw_src'] = nw_src_to_str(m.wildcards, m.nw_src)
if ~m.wildcards & ofproto_v1_0.OFPFW_NW_DST_ALL:
match['nw_dst'] = nw_dst_to_str(m.wildcards, m.nw_dst)
if ~m.wildcards & ofproto_v1_0.OFPFW_TP_SRC:
match['tp_src'] = m.tp_src
if ~m.wildcards & ofproto_v1_0.OFPFW_TP_DST:
match['tp_dst'] = m.tp_dst
return match
def actions_to_str(acts):
actions = []
for a in acts:
action_type = a.cls_action_type
if action_type == ofproto_v1_0.OFPAT_OUTPUT:
port = UTIL.ofp_port_to_user(a.port)
buf = 'OUTPUT:' + str(port)
elif action_type == ofproto_v1_0.OFPAT_SET_VLAN_VID:
buf = 'SET_VLAN_VID:' + str(a.vlan_vid)
elif action_type == ofproto_v1_0.OFPAT_SET_VLAN_PCP:
buf = 'SET_VLAN_PCP:' + str(a.vlan_pcp)
elif action_type == ofproto_v1_0.OFPAT_STRIP_VLAN:
buf = 'STRIP_VLAN'
elif action_type == ofproto_v1_0.OFPAT_SET_DL_SRC:
buf = 'SET_DL_SRC:' + haddr_to_str(a.dl_addr)
elif action_type == ofproto_v1_0.OFPAT_SET_DL_DST:
buf = 'SET_DL_DST:' + haddr_to_str(a.dl_addr)
elif action_type == ofproto_v1_0.OFPAT_SET_NW_SRC:
buf = 'SET_NW_SRC:' + \
socket.inet_ntoa(struct.pack('!I', a.nw_addr))
elif action_type == ofproto_v1_0.OFPAT_SET_NW_DST:
buf = 'SET_NW_DST:' + \
socket.inet_ntoa(struct.pack('!I', a.nw_addr))
elif action_type == ofproto_v1_0.OFPAT_SET_NW_TOS:
buf = 'SET_NW_TOS:' + str(a.tos)
elif action_type == ofproto_v1_0.OFPAT_SET_TP_SRC:
buf = 'SET_TP_SRC:' + str(a.tp)
elif action_type == ofproto_v1_0.OFPAT_SET_TP_DST:
buf = 'SET_TP_DST:' + str(a.tp)
elif action_type == ofproto_v1_0.OFPAT_ENQUEUE:
port = UTIL.ofp_port_to_user(a.port)
queue = UTIL.ofp_queue_to_user(a.queue_id)
buf = 'ENQUEUE:' + str(port) + ":" + str(queue)
elif action_type == ofproto_v1_0.OFPAT_VENDOR:
buf = 'VENDOR'
else:
buf = 'UNKNOWN'
actions.append(buf)
return actions
def add_mac(self, mac, nw_id, nw_id_external=None):
_nw_id = self.mac_to_net.get(mac)
if _nw_id == nw_id:
return
# allow changing from nw_id_external to known nw id
if _nw_id is None or _nw_id == nw_id_external:
self.mac_to_net[mac] = nw_id
LOG.debug('overwrite nw_id: mac %s nw old %s new %s',
haddr_to_str(mac), _nw_id, nw_id)
return
if nw_id == nw_id_external:
# this can happens when the packet traverses
# VM-> tap-> ovs-> ext-port-> wire-> ext-port-> ovs-> tap-> VM
return
LOG.warning('duplicated nw_id: mac %s nw old %s new %s',
haddr_to_str(mac), _nw_id, nw_id)
raise MacAddressDuplicated(mac=mac)
def packetInHandler(self, ev):
msg = ev.msg
datapath = msg.datapath
ofproto = datapath.ofproto
dst, src, eth_type = struct.unpack_from('!6s6sH', buffer(msg.data), 0)
dpid = datapath.id
self.mac2port.dpid_add(dpid)
LOG.info("packet in %s %s %s %s", dpid, haddr_to_str(src),
haddr_to_str(dst), msg.in_port)
self.mac2port.port_add(dpid, msg.in_port, src)
out_port = self.mac2port.port_get(dpid, dst)
if out_port == None:
LOG.info("out_port not found")
out_port = ofproto.OFPP_FLOOD
actions = [datapath.ofproto_parser.OFPActionOutput(out_port)]
if out_port != ofproto.OFPP_FLOOD:
wildcards = ofproto.OFPFW_ALL
wildcards &= ~(ofproto.OFPFW_IN_PORT | ofproto.OFPFW_DL_DST
| ofproto.OFPFW_NW_TOS)
match = datapath.ofproto_parser.OFPMatch(
wildcards, msg.in_port, haddr_to_bin('00:00:00:00:00:00'), dst,
0, 0, 0, 0, 0, 0, 0, 0, 0)
datapath.send_flow_mod(match=match,
cookie=0,
command=ofproto.OFPFC_ADD,
idle_timeout=0,
hard_timeout=0,
priority=32768,
flags=ofproto.OFPFF_SEND_FLOW_REM,
actions=actions)
datapath.send_packet_out(msg.buffer_id, msg.in_port, actions)
def port_add(self, dpid, port, mac):
"""
:returns: old port if learned. (this may be = port)
None otherwise
"""
old_port = self.mac_to_port[dpid].get(mac, None)
self.mac_to_port[dpid][mac] = port
if old_port is not None and old_port != port:
LOG.debug('port_add: 0x%016x 0x%04x %s', dpid, port,
haddr_to_str(mac))
return old_port
def actions_to_str(acts):
actions = []
for a in acts:
action_type = a.cls_action_type
if action_type == ofproto_v1_0.OFPAT_OUTPUT:
buf = 'OUTPUT:' + str(a.port)
elif action_type == ofproto_v1_0.OFPAT_SET_VLAN_VID:
buf = 'SET_VLAN_VID:' + str(a.vlan_vid)
elif action_type == ofproto_v1_0.OFPAT_SET_VLAN_PCP:
buf = 'SET_VLAN_PCP:' + str(a.vlan_pcp)
elif action_type == ofproto_v1_0.OFPAT_STRIP_VLAN:
buf = 'STRIP_VLAN'
elif action_type == ofproto_v1_0.OFPAT_SET_DL_SRC:
buf = 'SET_DL_SRC:' + haddr_to_str(a.dl_addr)
elif action_type == ofproto_v1_0.OFPAT_SET_DL_DST:
buf = 'SET_DL_DST:' + haddr_to_str(a.dl_addr)
else:
buf = 'UNKNOWN'
actions.append(buf)
return actions
def _packet_in_handler(self, ev):
msg = ev.msg
datapath = msg.datapath
ofproto = datapath.ofproto
dst, src, _eth_type = struct.unpack_from('!6s6sH', buffer(msg.data), 0)
dpid = datapath.id
self.mac2port.dpid_add(dpid)
LOG.info("packet in %s %s %s %s", dpid, haddr_to_str(src),
haddr_to_str(dst), msg.in_port)
self.mac2port.port_add(dpid, msg.in_port, src)
out_port = self.mac2port.port_get(dpid, dst)
if out_port == None:
LOG.info("out_port not found")
out_port = ofproto.OFPP_FLOOD
actions = [datapath.ofproto_parser.OFPActionOutput(out_port)]
if out_port != ofproto.OFPP_FLOOD:
rule = nx_match.ClsRule()
rule.set_in_port(msg.in_port)
rule.set_dl_dst(dst)
rule.set_dl_type(nx_match.ETH_TYPE_IP)
rule.set_nw_dscp(0)
datapath.send_flow_mod(rule=rule,
cookie=0,
command=ofproto.OFPFC_ADD,
idle_timeout=0,
hard_timeout=0,
priority=ofproto.OFP_DEFAULT_PRIORITY,
flags=ofproto.OFPFF_SEND_FLOW_REM,
actions=actions)
datapath.send_packet_out(msg.buffer_id, msg.in_port, actions)
def _packet_in_handler(self, ev):
pkt = packet.Packet(array.array('B', ev.msg.data))
eth_pkt = pkt.get_protocol(ethernet.ethernet)
arp_pkt = pkt.get_protocol(arp.arp)
ip4_pkt = pkt.get_protocol(ipv4.ipv4)
if arp_pkt:
pak = arp_pkt
elif ip4_pkt:
pak = ip4_pkt
else:
pak = eth_pkt
self.logger.info(' _packet_in_handler: src_mac -> %s' % eth_pkt.src)
self.logger.info(' _packet_in_handler: dst_mac -> %s' % eth_pkt.dst)
self.logger.info(' _packet_in_handler: %s' % pak)
self.logger.info(' ------')
src = eth_pkt.src # Set up the src and dst variables so you can use them
dst = eth_pkt.dst
## Mike Pennington's modifications end here
msg = ev.msg
datapath = msg.datapath
ofproto = datapath.ofproto
dpid = datapath.id
self.mac_to_port.setdefault(dpid, {})
# learn a mac address to avoid FLOOD next time.
self.mac_to_port[dpid][src] = msg.in_port
if dst in self.mac_to_port[dpid]:
out_port = self.mac_to_port[dpid][dst]
else:
out_port = ofproto.OFPP_FLOOD
actions = [datapath.ofproto_parser.OFPActionOutput(out_port)]
# install a flow to avoid packet_in next time
if out_port != ofproto.OFPP_FLOOD:
self.add_flow(datapath, msg.in_port, dst, actions)
out = datapath.ofproto_parser.OFPPacketOut(
datapath=datapath, buffer_id=msg.buffer_id, in_port=msg.in_port,
actions=actions)
datapath.send_msg(out)
if (haddr_to_str(src) == "00:00:00:00:00:01"):
print "src"
self.counterTraffic +=1
def packet_in_handler(self, ev):
print("[DEDALO] Nuevo paquete\n")
msg = ev.msg
datapath = msg.datapath
ofproto = datapath.ofproto
dst, src, _eth_type = struct.unpack_from('!6s6sH', buffer(msg.data), 0)
dpid = datapath.id
self.mac_to_port.setdefault(dpid, {})
self.logger.debug("packet in %s %s %s %s",
dpid, haddr_to_str(src), haddr_to_str(dst),
msg.in_port)
# learn a mac address to avoid FLOOD next time.
self.mac_to_port[dpid][src] = msg.in_port
if dst in self.mac_to_port[dpid]:
out_port = self.mac_to_port[dpid][dst]
else:
out_port = ofproto.OFPP_FLOOD
actions = [datapath.ofproto_parser.OFPActionOutput(out_port)]
print("[DEDALO] Paquete entrante en " + str(dpid) + " con MAC destino " + haddr_to_str(dst) + " sale por el puerto " + str(out_port))
# install a flow to avoid packet_in next time
if out_port != ofproto.OFPP_FLOOD:
self.add_flow(datapath, msg.in_port, dst, actions)
out = datapath.ofproto_parser.OFPPacketOut(
datapath=datapath, buffer_id=msg.buffer_id, in_port=msg.in_port,
actions=actions)
datapath.send_msg(out)
print("[DEDALO] Tabla CAM: " + str(self.mac_to_port))
def block_out_sample_in(self, stats):
ofproto = datapath.ofproto
#SRC BLOCK FLOW
src_mac = stats.match.dl_dst
if not src_mac == self.gateway_mac:
src_match = datapath.ofproto_parser.OFPMatch(
dl_src=src_mac, dl_dst=self.gateway_mac)
src_flow = datapath.ofproto_parser.OFPFlowMod(
datapath=datapath,
match=src_match,
cookie=random_int(),
command=ofproto.OFPFC_ADD,
idle_timeout=0,
hard_timeout=2,
priority=0x6000,
flags=ofproto.OFPFF_SEND_FLOW_REM)
datapath.send_msg(src_flow)
eventlet.sleep(0.1)
# DST BLOCK FLOW - We only sample this flow for 1 second,
# Destination does not receive anything.
dst_mac = stats.match.dl_dst
if not dst_mac == self.gateway_mac:
dst_match = datapath.ofproto_parser.OFPMatch(
dl_src=self.gateway_mac, dl_dst=dst_mac)
dst_actions = [
datapath.ofproto_parser.OFPActionOutput(monitor_port)
]
dst_flow = datapath.ofproto_parser.OFPFlowMod(
datapath=datapath,
match=dst_match,
cookie=random_int(),
command=ofproto.OFPFC_ADD,
idle_timeout=0,
hard_timeout=1,
priority=0x6000,
flags=ofproto.OFPFF_SEND_FLOW_REM,
actions=dst_actions)
datapath.send_msg(dst_flow)
#Notify parser of this source/destination being blocked from this point on.
outgoing_block_mode_v1_dict[(haddr_to_str(src_mac))] = int(
time.time() * 1000)
def match_to_str(ofmatch):
keys = {ofproto_v1_3.OXM_OF_IN_PORT: 'in_port',
ofproto_v1_3.OXM_OF_ETH_SRC: 'dl_src',
ofproto_v1_3.OXM_OF_ETH_DST: 'dl_dst',
ofproto_v1_3.OXM_OF_ETH_TYPE: 'dl_type',
ofproto_v1_3.OXM_OF_VLAN_VID: 'dl_vlan',
ofproto_v1_3.OXM_OF_IPV4_SRC: 'nw_src',
ofproto_v1_3.OXM_OF_IPV4_DST: 'nw_dst',
ofproto_v1_3.OXM_OF_IPV4_SRC_W: 'nw_src',
ofproto_v1_3.OXM_OF_IPV4_DST_W: 'nw_dst',
ofproto_v1_3.OXM_OF_IP_PROTO: 'nw_proto',
ofproto_v1_3.OXM_OF_TCP_SRC: 'tp_src',
ofproto_v1_3.OXM_OF_TCP_DST: 'tp_dst',
ofproto_v1_3.OXM_OF_UDP_SRC: 'tp_src',
ofproto_v1_3.OXM_OF_UDP_DST: 'tp_dst',
ofproto_v1_3.OXM_OF_MPLS_LABEL: 'mpls_label',
ofproto_v1_3.OXM_OF_METADATA: 'metadata',
ofproto_v1_3.OXM_OF_METADATA_W: 'metadata',
ofproto_v1_3.OXM_OF_ARP_SPA: 'arp_spa',
ofproto_v1_3.OXM_OF_ARP_TPA: 'arp_tpa',
ofproto_v1_3.OXM_OF_ARP_SPA_W: 'arp_spa',
ofproto_v1_3.OXM_OF_ARP_TPA_W: 'arp_tpa',
ofproto_v1_3.OXM_OF_IPV6_SRC: 'ipv6_src',
ofproto_v1_3.OXM_OF_IPV6_DST: 'ipv6_dst',
ofproto_v1_3.OXM_OF_IPV6_SRC_W: 'ipv6_src',
ofproto_v1_3.OXM_OF_IPV6_DST_W: 'ipv6_dst'}
match = {}
for match_field in ofmatch.fields:
key = keys[match_field.header]
if key == 'dl_src' or key == 'dl_dst':
value = mac.haddr_to_str(match_field.value)
elif key == 'nw_src' or key == 'nw_dst' or \
key == 'arp_spa' or key == 'arp_tpa':
value = match_ip_to_str(match_field.value, match_field.mask)
elif key == 'ipv6_src' or key == 'ipv6_dst':
value = match_ipv6_to_str(match_field.value, match_field.mask)
elif key == 'metadata':
value = ('%d/%d' % (match_field.value, match_field.mask)
if match_field.mask else '%d' % match_field.value)
else:
value = match_field.value
match.setdefault(key, value)
return match
def to_del_openflow(of_match):
mac_dontcare = mac.haddr_to_str(mac.DONTCARE)
ip_dontcare = '0.0.0.0'
match = {}
for key, value in of_match.items():
if key == REST_SRC_MAC or key == REST_DST_MAC:
if value == mac_dontcare:
continue
elif key == REST_SRC_IP or key == REST_DST_IP:
if value == ip_dontcare:
continue
elif value == 0:
continue
match.setdefault(key, value)
return match
def _upstream_collector(self, pkt):
(version, msg_type, msg_len, xid) = ofproto_parser.header(pkt)
# Switch configuration messages
if msg_type == ofproto_v1_0.OFPT_FEATURES_REPLY:
# print("Reply xid: " + hex(xid))
msg = ofproto_v1_0_parser.OFPSwitchFeatures.parser(self.datapath, version, msg_type, msg_len, xid, pkt)
match = ofproto_v1_0_parser.OFPMatch(dl_type=ETH_TYPE_LLDP, dl_dst=lldp.LLDP_MAC_NEAREST_BRIDGE)
cookie = 0
command = ofproto_v1_0.OFPFC_ADD
idle_timeout = hard_timeout = 0
priority = 0
buffer_id = ofproto_v1_0.OFP_NO_BUFFER
out_port = ofproto_v1_0.OFPP_NONE
flags = 0
actions = [ofproto_v1_0_parser.OFPActionOutput(ofproto_v1_0.OFPP_CONTROLLER)]
mod = ofproto_v1_0_parser.OFPFlowMod(self.datapath, match, cookie, command, idle_timeout, hard_timeout, priority, buffer_id, out_port, flags, actions)
mod.serialize()
self.id = msg.datapath_id
self.ports = msg.ports
# print(str(self.id) + " : Receive Features Reply Message")
# print(msg)
for port in self.ports.values():
db_message = {"switch_id": hex(self.id),
"port_no": port.port_no,
"hw_addr": port.hw_addr,
"timestamp": datetime.datetime.utcnow()}
try:
self.db.switch_port.insert_one(db_message)
except:
if(self.id != None):
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(hex(self.id)) + "] --- Failed to write data into database")
else:
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(self.id) + "] --- Failed to write data into database")
pkt_lldp = packet.Packet()
dst = BROADCAST_STR
src = port.hw_addr
ethertype = ETH_TYPE_LLDP
eth_pkt = ethernet.ethernet(dst, src, ethertype)
pkt_lldp.add_protocol(eth_pkt)
tlv_chassis_id = lldp.ChassisID(
subtype=lldp.ChassisID.SUB_LOCALLY_ASSIGNED,
chassis_id='dpid:%s' % dpid_to_str(self.id))
tlv_port_id = lldp.PortID(subtype=lldp.PortID.SUB_PORT_COMPONENT,
port_id=struct.pack('!I', port.port_no))
tlv_ttl = lldp.TTL(ttl=120)
tlv_desc = lldp.PortDescription(port_description="ProxyTopologyMonitorLLDP")
tlv_end = lldp.End()
tlvs = (tlv_chassis_id, tlv_port_id, tlv_ttl, tlv_desc, tlv_end)
lldp_pkt = lldp.lldp(tlvs)
pkt_lldp.add_protocol(lldp_pkt)
pkt_lldp.serialize()
actions = [ofproto_v1_0_parser.OFPActionOutput(port.port_no)]
out = ofproto_v1_0_parser.OFPPacketOut(
datapath=self.datapath, in_port=ofproto_v1_0.OFPP_CONTROLLER,
buffer_id=ofproto_v1_0.OFP_NO_BUFFER, actions=actions,
data=pkt_lldp.data)
out.serialize()
try:
self.switch_socket.send(out.buf)
except:
if(self.id != None):
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(hex(self.id)) + "] --- Broken Pipe (Downstream : LLDP Message)")
else:
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(self.id) + "] --- Broken Pipe (Downstream : LLDP Message)")
# self._close()
pass
elif msg_type == ofproto_v1_0.OFPT_STATS_REPLY:
msg = ofproto_v1_0_parser.OFPPortStatsReply.parser(self.datapath, version, msg_type, msg_len, xid, pkt)
if(type(msg) is ofproto_v1_0_parser.OFPFlowStatsReply):
# print(str(self.id) + " : Receive Flow Stats Message")
# print(msg.body)
for flow in msg.body:
db_message = {"switch": hex(self.id),
"message": {
"header": {
"version": msg.version,
"type": msg.msg_type,
"length": msg.msg_len,
"xid": msg.xid
},
"match": {
"wildcards": flow.match.wildcards,
"in_port": flow.match.in_port,
"dl_src": mac.haddr_to_str(flow.match.dl_src),
"dl_dst": mac.haddr_to_str(flow.match.dl_dst),
"dl_vlan": flow.match.dl_vlan,
"dl_vlan_pcp": flow.match.dl_vlan_pcp,
"dl_type": flow.match.dl_type,
"nw_tos": flow.match.nw_tos,
"nw_proto": flow.match.nw_proto,
"nw_src": ip.ipv4_to_str(flow.match.nw_src),
"nw_dst": ip.ipv4_to_str(flow.match.nw_dst),
"tp_src": flow.match.tp_src,
"tp_dst": flow.match.tp_dst
},
"cookie": flow.cookie,
"idle_timeout": flow.idle_timeout,
"hard_timeout": flow.hard_timeout,
"priority": flow.priority,
"flags": msg.flags,
"actions": []
},
"timestamp": datetime.datetime.utcnow()}
for action in flow.actions:
db_message["message"]["actions"].append(vars(action));
try:
self.db.flow_stats.insert_one(db_message)
except:
if(self.id != None):
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(hex(self.id)) + "] --- Failed to write data into database")
else:
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(self.id) + "] --- Failed to write data into database")
pass
if(type(msg) is ofproto_v1_0_parser.OFPPortStatsReply):
# print(str(self.id) + " : Receive Port Stats Message")
# print(msg.body)
for port in msg.body:
# print(port)
db_message = {"switch": hex(self.id),
"port_no": port.port_no,
"rx_packets": port.rx_packets,
"tx_packets": port.tx_packets,
"rx_bytes": port.rx_bytes,
"tx_bytes": port.tx_bytes,
"rx_dropped": port.rx_dropped,
"tx_dropped": port.tx_dropped,
"rx_errors": port.rx_errors,
"tx_errors": port.tx_errors,
"rx_frame_err": port.rx_frame_err,
"rx_over_err": port.rx_over_err,
"rx_crc_err": port.rx_crc_err,
"collisions": port.collisions,
"timestamp": datetime.datetime.utcnow()}
try:
self.db.port_stats.insert_one(db_message)
except:
if(self.id != None):
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(hex(self.id)) + "] --- Failed to write data into database")
else:
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(self.id) + "] --- Failed to write data into database")
pass
# Asynchronous messages
elif msg_type == ofproto_v1_0.OFPT_PACKET_IN:
msg = ofproto_v1_0_parser.OFPPacketIn.parser(self.datapath, version, msg_type, msg_len, xid, pkt)
pkt_msg = packet.Packet(msg.data)
if pkt_msg.get_protocol(ethernet.ethernet).ethertype == ETH_TYPE_LLDP:
lldp_msg = pkt_msg.get_protocol(lldp.lldp)
if lldp_msg != None:
if lldp_msg.tlvs[3].tlv_info == "ProxyTopologyMonitorLLDP":
(port,) = struct.unpack('!I', lldp_msg.tlvs[1].port_id)
switch_src = str_to_dpid(lldp_msg.tlvs[0].chassis_id[5:])
# print(str(self.id) + " : Receive Proxy LLDP Packet")
# print(lldp_msg)
# Write to database
try:
self.db.topology.insert_one({"switch_dst": hex(self.id),
"port_dst": port,
"switch_src": hex(switch_src),
"port_src": msg.in_port,
"timestamp": datetime.datetime.utcnow()})
except:
if(self.id != None):
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(hex(self.id)) + "] --- Failed to write data into database")
else:
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(self.id) + "] --- Failed to write data into database")
return
elif lldp_msg.tlvs[3].tlv_info != "ProxyTopologyMonitorLLDP":
# print(lldp_msg)
# print("Controller LLDP packet")
pass
def _downstream_parse(self, pkt):
try:
self.switch_socket.send(pkt)
except:
if(self.id != None):
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(hex(self.id)) + "] --- Broken Pipe (Downstream)")
else:
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(self.id) + "] --- Broken Pipe (Downstream)")
# self._close()
# pass
(version, msg_type, msg_len, xid) = ofproto_parser.header(pkt)
# Controller command messages
if msg_type == ofproto_v1_0.OFPT_FLOW_MOD:
msg = ofproto_v1_0_parser.OFPFlowMod.parser(self.datapath, version, msg_type, msg_len, xid, pkt)
# print(str(self.id) + " : Receive Flow Mod Message")
# Write to database
db_message = {"switch": hex(self.id),
"message": {
"header": {
"version": version,
"type": msg_type,
"length": msg_len,
"xid": xid
},
"match": {
"wildcards": msg.match.wildcards,
"in_port": msg.match.in_port,
"dl_src": mac.haddr_to_str(msg.match.dl_src),
"dl_dst": mac.haddr_to_str(msg.match.dl_dst),
"dl_vlan": msg.match.dl_vlan,
"dl_vlan_pcp": msg.match.dl_vlan_pcp,
"dl_type": msg.match.dl_type,
"nw_tos": msg.match.nw_tos,
"nw_proto": msg.match.nw_proto,
"nw_src": ip.ipv4_to_str(msg.match.nw_src),
"nw_dst": ip.ipv4_to_str(msg.match.nw_dst),
"tp_src": msg.match.tp_src,
"tp_dst": msg.match.tp_dst
},
"cookie": msg.cookie,
"command": msg.command,
"idle_timeout": msg.idle_timeout,
"hard_timeout": msg.hard_timeout,
"priority": msg.priority,
"buffer_id": msg.buffer_id,
"out_port": msg.out_port,
"flags": msg.flags,
"actions": []
},
"timestamp": datetime.datetime.utcnow()}
for action in msg.actions:
db_message["message"]["actions"].append(vars(action))
# print(db_message)
try:
self.db.flow_mods.insert_one(db_message)
# if(self.id != None):
# print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : [" + str(hex(self.id)) + "] --- Received FlowMod message")
# else:
# print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : [" + str(self.id) + "] --- Received FlowMod message")
except:
if(self.id != None):
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(hex(self.id)) + "] --- Failed to write data into database")
else:
print(datetime.datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S') + " : ERROR [" + str(self.id) + "] --- Failed to write data into database")
pass
def test_mac_haddr_to_str_assert(self):
val = b'\xaa\xaa\xaa\xaa\xaa'
res = mac.haddr_to_str(val)
def packet_in_handler(self, ev):
# LOG.debug('packet in ev %s msg %s', ev, ev.msg)
msg = ev.msg
datapath = msg.datapath
dst, src, _eth_type = struct.unpack_from('!6s6sH', buffer(msg.data), 0)
try:
port_nw_id = self.nw.get_network(datapath.id, msg.in_port)
except PortUnknown:
port_nw_id = NW_ID_UNKNOWN
if port_nw_id != NW_ID_UNKNOWN:
# Here it is assumed that the
# (port <-> network id)/(mac <-> network id) relationship
# is stable once the port is created. The port will be destroyed
# before assigning new network id to the given port.
# This is correct nova-network/nova-compute.
try:
# allow external -> known nw id change
self.mac2net.add_mac(src, port_nw_id, NW_ID_EXTERNAL)
except MacAddressDuplicated:
LOG.warn(
'mac address %s is already in use.'
' So (dpid %s, port %s) can not use it', haddr_to_str(src),
datapath.id, msg.in_port)
#
# should we install drop action pro-actively for future?
#
self._drop_packet(msg)
return
old_port = self.mac2port.port_add(datapath.id, msg.in_port, src)
if old_port is not None and old_port != msg.in_port:
# We really overwrite already learned mac address.
# So discard already installed stale flow entry which conflicts
# new port.
rule = nx_match.ClsRule()
rule.set_dl_dst(src)
datapath.send_flow_mod(
rule=rule,
cookie=0,
command=datapath.ofproto.OFPFC_DELETE,
idle_timeout=0,
hard_timeout=0,
priority=datapath.ofproto.OFP_DEFAULT_PRIORITY,
out_port=old_port)
# to make sure the old flow entries are purged.
datapath.send_barrier()
src_nw_id = self.mac2net.get_network(src, NW_ID_UNKNOWN)
dst_nw_id = self.mac2net.get_network(dst, NW_ID_UNKNOWN)
# we handle multicast packet as same as broadcast
broadcast = (dst == mac.BROADCAST) or mac.is_multicast(dst)
out_port = self.mac2port.port_get(datapath.id, dst)
#
# there are several combinations:
# in_port: known nw_id, external, unknown nw,
# src mac: known nw_id, external, unknown nw,
# dst mac: known nw_id, external, unknown nw, and broadcast/multicast
# where known nw_id: is quantum network id
# external: means that these ports are connected to outside
# unknown nw: means that we don't know this port is bounded to
# specific nw_id or external
# broadcast: the destination mac address is broadcast address
# (or multicast address)
#
# Can the following logic be refined/shortened?
#
# When NW_ID_UNKNOWN is found, registering ports might be delayed.
# So just drop only this packet and not install flow entry.
# It is expected that when next packet arrives, the port is registers
# with some network id
if port_nw_id != NW_ID_EXTERNAL and port_nw_id != NW_ID_UNKNOWN:
if broadcast:
# flood to all ports of external or src_nw_id
self._flood_to_nw_id(msg, src, dst, src_nw_id)
elif src_nw_id == NW_ID_EXTERNAL:
self._modflow_and_drop_packet(msg, src, dst)
return
elif src_nw_id == NW_ID_UNKNOWN:
self._drop_packet(msg)
return
else:
# src_nw_id != NW_ID_EXTERNAL and src_nw_id != NW_ID_UNKNOWN:
#
# try learned mac check if the port is net_id
# or
# flood to all ports of external or src_nw_id
self._learned_mac_or_flood_to_nw_id(msg, src, dst, src_nw_id,
out_port)
elif port_nw_id == NW_ID_EXTERNAL:
if src_nw_id != NW_ID_EXTERNAL and src_nw_id != NW_ID_UNKNOWN:
if broadcast:
# flood to all ports of external or src_nw_id
self._flood_to_nw_id(msg, src, dst, src_nw_id)
elif (dst_nw_id != NW_ID_EXTERNAL
and dst_nw_id != NW_ID_UNKNOWN):
if src_nw_id == dst_nw_id:
# try learned mac
# check if the port is external or same net_id
# or
# flood to all ports of external or src_nw_id
self._learned_mac_or_flood_to_nw_id(
msg, src, dst, src_nw_id, out_port)
else:
# should not occur?
LOG.debug("should this case happen?")
self._drop_packet(msg)
elif dst_nw_id == NW_ID_EXTERNAL:
# try learned mac
# or
# flood to all ports of external or src_nw_id
self._learned_mac_or_flood_to_nw_id(
msg, src, dst, src_nw_id, out_port)
else:
assert dst_nw_id == NW_ID_UNKNOWN
LOG.debug("Unknown dst_nw_id")
self._drop_packet(msg)
elif src_nw_id == NW_ID_EXTERNAL:
self._modflow_and_drop_packet(msg, src, dst)
else:
# should not occur?
assert src_nw_id == NW_ID_UNKNOWN
self._drop_packet(msg)
else:
# drop packets
assert port_nw_id == NW_ID_UNKNOWN
self._drop_packet(msg)
def haddr_to_str(self, addr):
return mac.haddr_to_str(addr)
def packet_in_handler(self, ev):
msg = ev.msg
datapath = msg.datapath
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
in_port = msg.match['in_port']
dst, src, eth_type = struct.unpack_from('!6s6sH', buffer(msg.data), 0)
match = msg.match.fields
#for field in match:
#logger.info("FIELDS==> %s ",field.value)
logger.info("")
logger.info("----------------------------------------")
logger.info("*** PacketIn ***")
logger.info("in_port=%d, eth_type: %s", in_port, hex(eth_type))
logger.info("packet reason=%d buffer_id=%d", msg.reason, msg.buffer_id)
logger.info("packet in datapath_id=%s src=%s dst=%s", msg.datapath.id,
haddr_to_str(src), haddr_to_str(dst))
pkt = packet.Packet(msg.data) # get data of packet
eth = pkt.get_protocols(ethernet.ethernet)[0]
if eth.ethertype == ether_types.ETH_TYPE_LLDP:
# ignore lldp packet
return
dst = eth.dst
src = eth.src
dpid = datapath.id
self.mac_to_port.setdefault(dpid, {})
# learn a mac address to avoid FLOOD next time.
self.mac_to_port[dpid][src] = in_port
if dst in self.mac_to_port[dpid]:
out_port = self.mac_to_port[dpid][dst]
else:
out_port = ofproto.OFPP_FLOOD
actions = [parser.OFPActionOutput(out_port)]
# install a flow to avoid packet_in next time
if out_port != ofproto.OFPP_FLOOD:
match = parser.OFPMatch(in_port=in_port, eth_dst=dst)
# verify if we have a valid buffer_id, if yes avoid to send both
# flow_mod & packet_out
if msg.buffer_id != ofproto.OFP_NO_BUFFER:
self.add_flow(datapath, 1, match, actions, msg.buffer_id)
return
else:
self.add_flow(datapath, 1, match, actions)
data = None
if msg.buffer_id == ofproto.OFP_NO_BUFFER:
data = msg.data
out = parser.OFPPacketOut(datapath=datapath,
buffer_id=msg.buffer_id,
in_port=in_port,
actions=actions,
data=data)
datapath.send_msg(out)
def __str__(self):
return ('EventVMPort<dpid %s port_no %d '
'network_id %s tunnel_key %s mac %s add_del %s>' %
(dpid_lib.dpid_to_str(self.dpid), self.port_no,
self.network_id, self.tunnel_key,
mac.haddr_to_str(self.mac_address), self.add_del))
def match_to_str(ofmatch):
keys = {ofproto_v1_3.OXM_OF_IN_PORT: 'in_port',
ofproto_v1_3.OXM_OF_IN_PHY_PORT: 'in_phy_port',
ofproto_v1_3.OXM_OF_ETH_SRC: 'dl_src',
ofproto_v1_3.OXM_OF_ETH_DST: 'dl_dst',
ofproto_v1_3.OXM_OF_ETH_TYPE: 'dl_type',
ofproto_v1_3.OXM_OF_VLAN_VID: 'dl_vlan',
ofproto_v1_3.OXM_OF_VLAN_PCP: 'vlan_pcp',
ofproto_v1_3.OXM_OF_IP_DSCP: 'ip_dscp',
ofproto_v1_3.OXM_OF_IP_ECN: 'ip_ecn',
ofproto_v1_3.OXM_OF_IPV4_SRC: 'nw_src',
ofproto_v1_3.OXM_OF_IPV4_DST: 'nw_dst',
ofproto_v1_3.OXM_OF_IPV4_SRC_W: 'nw_src',
ofproto_v1_3.OXM_OF_IPV4_DST_W: 'nw_dst',
ofproto_v1_3.OXM_OF_IP_PROTO: 'nw_proto',
ofproto_v1_3.OXM_OF_TCP_SRC: 'tp_src',
ofproto_v1_3.OXM_OF_TCP_DST: 'tp_dst',
ofproto_v1_3.OXM_OF_UDP_SRC: 'tp_src',
ofproto_v1_3.OXM_OF_UDP_DST: 'tp_dst',
ofproto_v1_3.OXM_OF_SCTP_SRC: 'sctp_src',
ofproto_v1_3.OXM_OF_SCTP_DST: 'sctp_dst',
ofproto_v1_3.OXM_OF_ICMPV4_TYPE: 'icmpv4_type',
ofproto_v1_3.OXM_OF_ICMPV4_CODE: 'icmpv4_code',
ofproto_v1_3.OXM_OF_MPLS_LABEL: 'mpls_label',
ofproto_v1_3.OXM_OF_MPLS_TC: 'mpls_tc',
ofproto_v1_3.OXM_OF_MPLS_BOS: 'mpls_bos',
ofproto_v1_3.OXM_OF_METADATA: 'metadata',
ofproto_v1_3.OXM_OF_METADATA_W: 'metadata',
ofproto_v1_3.OXM_OF_STATE: 'state',
ofproto_v1_3.OXM_OF_FLAGS: 'flags',
ofproto_v1_3.OXM_OF_FLAGS_W: 'flags',
ofproto_v1_3.OXM_OF_ARP_OP: 'arp_op',
ofproto_v1_3.OXM_OF_ARP_SPA: 'arp_spa',
ofproto_v1_3.OXM_OF_ARP_TPA: 'arp_tpa',
ofproto_v1_3.OXM_OF_ARP_SPA_W: 'arp_spa',
ofproto_v1_3.OXM_OF_ARP_TPA_W: 'arp_tpa',
ofproto_v1_3.OXM_OF_ARP_SHA: 'arp_sha',
ofproto_v1_3.OXM_OF_ARP_THA: 'arp_tha',
ofproto_v1_3.OXM_OF_IPV6_SRC: 'ipv6_src',
ofproto_v1_3.OXM_OF_IPV6_DST: 'ipv6_dst',
ofproto_v1_3.OXM_OF_IPV6_SRC_W: 'ipv6_src',
ofproto_v1_3.OXM_OF_IPV6_DST_W: 'ipv6_dst',
ofproto_v1_3.OXM_OF_IPV6_FLABEL: 'ipv6_flabel',
ofproto_v1_3.OXM_OF_ICMPV6_TYPE: 'icmpv6_type',
ofproto_v1_3.OXM_OF_ICMPV6_CODE: 'icmpv6_code',
ofproto_v1_3.OXM_OF_IPV6_ND_TARGET: 'ipv6_nd_target',
ofproto_v1_3.OXM_OF_IPV6_ND_SLL: 'ipv6_nd_sll',
ofproto_v1_3.OXM_OF_IPV6_ND_TLL: 'ipv6_nd_tll',
ofproto_v1_3.OXM_OF_PBB_ISID: 'pbb_isid',
ofproto_v1_3.OXM_OF_TUNNEL_ID: 'tunnel_id',
ofproto_v1_3.OXM_OF_IPV6_EXTHDR: 'ipv6_exthdr'}
match = {}
for match_field in ofmatch.fields:
key = keys[match_field.header]
if key == 'dl_src' or key == 'dl_dst' or key == 'arp_sha' or \
key == 'arp_tha' or key == 'ipv6_nd_tll' or \
key == 'ipv6_nd_sll':
value = mac.haddr_to_str(match_field.value)
elif key == 'nw_src' or key == 'nw_dst' or \
key == 'arp_spa' or key == 'arp_tpa':
value = match_ip_to_str(match_field.value, match_field.mask)
elif key == 'ipv6_src' or key == 'ipv6_dst':
value = match_ipv6_to_str(match_field.value, match_field.mask)
elif key == 'metadata':
value = ('%d/%d' % (match_field.value, match_field.mask)
if match_field.mask else '%d' % match_field.value)
else:
value = match_field.value
match.setdefault(key, value)
return match
def sample_first_block_later(self, stats):
# DST flow with slightly higher priority
ofproto = datapath.ofproto
dst_mac = stats.match.dl_dst
if not dst_mac == self.gateway_mac:
dst_match = datapath.ofproto_parser.OFPMatch(
dl_src=self.gateway_mac, dl_dst=dst_mac)
dst_actions = stats.actions
dst_actions.append(
datapath.ofproto_parser.OFPActionOutput(monitor_port))
dst_flow = datapath.ofproto_parser.OFPFlowMod(
datapath=datapath,
match=dst_match,
cookie=random_int(),
command=ofproto.OFPFC_ADD,
idle_timeout=0,
hard_timeout=2,
priority=0x6001,
flags=ofproto.OFPFF_SEND_FLOW_REM,
actions=dst_actions)
datapath.send_msg(dst_flow)
outgoing_block_mode_v2_dict[(haddr_to_str(dst_mac))] = []
# Time of installing first sample flow.
outgoing_block_mode_v2_dict[(haddr_to_str(dst_mac))].append(
int(time.time() * 1000))
# Not sampling this flow for now. Could check relation between outgoing requests
# and incoming responses if we sampled this.
src_mac = stats.match.dl_dst
if not src_mac == self.gateway_mac:
src_match = datapath.ofproto_parser.OFPMatch(
dl_src=src_mac, dl_dst=self.gateway_mac)
src_actions = [
datapath.ofproto_parser.OFPActionOutput(self.gateway_port)
]
src_flow = datapath.ofproto_parser.OFPFlowMod(
datapath=datapath,
match=src_match,
cookie=random_int(),
command=ofproto.OFPFC_ADD,
idle_timeout=0,
hard_timeout=2,
priority=0x6001,
flags=ofproto.OFPFF_SEND_FLOW_REM,
actions=src_actions)
datapath.send_msg(src_flow)
#SRC BLOCK FLOW
src_mac = stats.match.dl_dst
if not src_mac == self.gateway_mac:
src_match = datapath.ofproto_parser.OFPMatch(
dl_src=src_mac, dl_dst=self.gateway_mac)
src_flow = datapath.ofproto_parser.OFPFlowMod(
datapath=datapath,
match=src_match,
cookie=random_int(),
command=ofproto.OFPFC_ADD,
idle_timeout=0,
hard_timeout=3,
priority=0x6000,
flags=ofproto.OFPFF_SEND_FLOW_REM)
datapath.send_msg(src_flow)
# Time of installing DROP flow. We do not want to count packets after this flow expired
# (3 seconds from this moment on)
outgoing_block_mode_v2_dict[(haddr_to_str(dst_mac))].append(
int(time.time() * 1000))
# DST BLOCK FLOW - We only sample this flow for 1 second,
# destination does not receive anything.
dst_mac = stats.match.dl_dst
if not dst_mac == self.gateway_mac:
dst_match = datapath.ofproto_parser.OFPMatch(
dl_src=self.gateway_mac, dl_dst=dst_mac)
dst_actions = [
datapath.ofproto_parser.OFPActionOutput(monitor_port)
]
dst_flow = datapath.ofproto_parser.OFPFlowMod(
datapath=datapath,
match=dst_match,
cookie=random_int(),
command=ofproto.OFPFC_ADD,
idle_timeout=0,
hard_timeout=3,
priority=0x6000,
flags=ofproto.OFPFF_SEND_FLOW_REM,
actions=dst_actions)
datapath.send_msg(dst_flow)
