class L2Controller(object):
def __init__(self, sw_name):
#self.topo = Topology(db="topology.db")
self.sw_name = sw_name
self.thrift_port = 9090
#self.thrift_port = self.topo.get_thrift_port(sw_name)
#self.cpu_port = self.topo.get_cpu_port_index(self.sw_name)
self.cpu_port = 2
self.controller = SimpleSwitchAPI(self.thrift_port)
self.init()
def init(self):
self.controller.reset_state()
#self.add_boadcast_groups()
self.add_mirror()
#self.fill_table_test()
def add_mirror(self):
if self.cpu_port:
self.controller.mirroring_add(100, self.cpu_port)
def read_register(self):
ns_recv = self.controller.register_read("ns_recv")
na_recv = self.controller.register_read("na_recv")
ns_filter = self.controller.register_read("ns_filter")
na_filter = self.controller.register_read("na_filter")
ns_recv_no_zero = []
for x in ns_recv:
if x != 0:
ns_recv_no_zero.append(x)
na_recv_no_zero = []
for x in na_recv:
if x != 0:
na_recv_no_zero.append(x)
ns_filter_no_zero = []
for x in ns_filter:
if x != 0:
ns_filter_no_zero.append(x)
na_filter_no_zero = []
for x in na_filter:
if x != 0:
na_filter_no_zero.append(x)
print "ns_recv: ", len(ns_recv_no_zero), ns_recv_no_zero
print "ns_filter: ", len(ns_filter_no_zero), ns_filter_no_zero
print "na_recv: ", len(na_recv_no_zero), na_recv_no_zero
print "na_filter: ", len(na_filter_no_zero), na_filter_no_zero
class ReadCounters(object):
# initialize register reader
def __init__(self, sw_name):
self.topo = Topology(db="./topology.db")
self.sw_name = sw_name
self.thrift_port = self.topo.get_thrift_port(sw_name)
self.controller = SimpleSwitchAPI(self.thrift_port)
def get_qlen(self):
qlens = []
packets = []
for i in range(1, 5):
# controller.register_read can read a certain register with specific index
# Here we read register from index 1 to 4,
# because in P4 implementation,
# We put the queue length data and packets data of the i-th port
# into the register with index i
packets.append(self.controller.register_read("in_port_packets", i))
qlens.append(self.controller.register_read("in_port_qlen", i))
return (packets, qlens)
class ReadCounters(object):
# initialize register reader
def __init__(self, sw_name):
self.topo = Topology(db="./topology.db")
self.sw_name = sw_name
self.thrift_port = self.topo.get_thrift_port(sw_name)
self.controller = SimpleSwitchAPI(self.thrift_port)
def get_qlen(self):
packets = []
data = getRegisterNameWidth()
registerWidth = int(data[1])
registerName = data[0]
for i in range(0, registerWidth):
packets.append(self.controller.register_read(registerName, i))
return (packets)
class BlinkController:
def __init__(self, topo_db, sw_name, ip_controller, port_controller, log_dir, \
monitoring=True, routing_file=None):
self.topo = Topology(db=topo_db)
self.sw_name = sw_name
self.thrift_port = self.topo.get_thrift_port(sw_name)
self.cpu_port = self.topo.get_cpu_port_index(self.sw_name)
self.controller = SimpleSwitchAPI(self.thrift_port)
self.controller.reset_state()
self.log_dir = log_dir
print 'connecting to ', ip_controller, port_controller
# Socket used to communicate with the controller
self.sock_controller = socket.socket(socket.AF_INET,
socket.SOCK_STREAM)
server_address = (ip_controller, port_controller)
self.sock_controller.connect(server_address)
print 'Connected!'
# Send the switch name to the controller
self.sock_controller.sendall(str(sw_name))
self.make_logging()
if monitoring:
# Monitoring scheduler
self.t_sched = sched_timer.RepeatingTimer(10, 0.5, self.scheduling)
self.t_sched.start()
self.mapping_dic = {}
tmp = list(self.topo.get_hosts()) + list(self.topo.get_p4switches())
self.mapping_dic = {k: v for v, k in enumerate(tmp)}
self.log.info(str(self.mapping_dic))
self.routing_file = routing_file
print 'routing_file ', routing_file
if self.routing_file is not None:
json_data = open(self.routing_file)
self.topo_routing = json.load(json_data)
def make_logging(self):
# Logger for the pipeline
logger.setup_logger('p4_to_controller', self.log_dir+'/p4_to_controller_'+ \
str(self.sw_name)+'.log', level=logging.INFO)
self.log = logging.getLogger('p4_to_controller')
# Logger for the sliding window
logger.setup_logger('p4_to_controller_sw', self.log_dir+'/p4_to_controller_'+ \
str(self.sw_name)+'_sw.log', level=logging.INFO)
self.log_sw = logging.getLogger('p4_to_controller_sw')
# Logger for the rerouting
logger.setup_logger('p4_to_controller_rerouting', self.log_dir+'/p4_to_controller_'+ \
str(self.sw_name)+'_rerouting.log', level=logging.INFO)
self.log_rerouting = logging.getLogger('p4_to_controller_rerouting')
# Logger for the Flow Selector
logger.setup_logger('p4_to_controller_fs', self.log_dir+'/p4_to_controller_'+ \
str(self.sw_name)+'_fs.log', level=logging.INFO)
self.log_fs = logging.getLogger('p4_to_controller_fs')
def scheduling(self):
for host in list(self.topo.get_hosts()):
prefix = self.topo.get_host_ip(host) + '/24'
# Print log about the sliding window
for id_prefix in [
self.mapping_dic[host] * 2, self.mapping_dic[host] * 2 + 1
]:
with HiddenPrints():
sw_time = float(
self.controller.register_read('sw_time',
index=id_prefix)) / 1000.
sw_index = self.controller.register_read('sw_index',
index=id_prefix)
sw_sum = self.controller.register_read('sw_sum',
index=id_prefix)
self.log_sw.info('sw_time\t' + host + '\t' + prefix + '\t' +
str(id_prefix) + '\t' + str(sw_time))
self.log_sw.info('sw_index\t' + host + '\t' + prefix + '\t' +
str(id_prefix) + '\t' + str(sw_index))
if sw_sum >= 32:
self.log_sw.info('sw_sum\t' + host + '\t' + prefix + '\t' +
str(id_prefix) + '\t' + str(sw_sum) +
'\tREROUTING')
else:
self.log_sw.info('sw_sum\t' + host + '\t' + prefix + '\t' +
str(id_prefix) + '\t' + str(sw_sum))
sw = []
tmp = 'sw ' + host + ' ' + prefix + ' ' + str(id_prefix) + '\t'
for i in range(0, 10):
with HiddenPrints():
binvalue = int(
self.controller.register_read(
'sw', (id_prefix * 10) + i))
tmp = tmp + str(binvalue) + ','
sw.append(binvalue)
tmp = tmp[:-1]
self.log_sw.info(str(tmp))
# Print log about rerouting
for host in list(self.topo.get_hosts()):
prefix = self.topo.get_host_ip(host) + '/24'
for id_prefix in [
self.mapping_dic[host] * 2, self.mapping_dic[host] * 2 + 1
]:
with HiddenPrints():
nh_avaibility_1 = self.controller.register_read(
'nh_avaibility_1', index=id_prefix)
nh_avaibility_2 = self.controller.register_read(
'nh_avaibility_2', index=id_prefix)
nh_avaibility_3 = self.controller.register_read(
'nh_avaibility_3', index=id_prefix)
nbflows_progressing_2 = self.controller.register_read(
'nbflows_progressing_2', index=id_prefix)
nbflows_progressing_3 = self.controller.register_read(
'nbflows_progressing_3', index=id_prefix)
rerouting_ts = self.controller.register_read(
'rerouting_ts', index=id_prefix)
threshold = self.controller.register_read(
'threshold_registers', index=id_prefix)
self.log_rerouting.info('nh_avaibility\t'+host+'\t'+prefix+'\t'+ \
str(id_prefix)+'\t'+str(nh_avaibility_1)+'\t'+ \
str(nh_avaibility_2)+'\t'+str(nh_avaibility_3))
self.log_rerouting.info('nblows_progressing\t'+host+'\t'+prefix+'\t'+ \
str(id_prefix)+'\t'+str(nbflows_progressing_2)+'\t'+ \
str(nbflows_progressing_3))
self.log_rerouting.info('rerouting_ts\t'+host+'\t'+prefix+'\t'+ \
str(id_prefix)+'\t'+str(rerouting_ts))
self.log_rerouting.info('threshold\t'+host+'\t'+prefix+'\t'+ \
str(id_prefix)+'\t'+str(threshold))
nexthop_str = ''
nha = [nh_avaibility_1, nh_avaibility_2, nh_avaibility_3]
i = 0
if self.routing_file is not None:
bgp_type = 'customer' if id_prefix % 2 == 0 else 'customer_provider_peer'
if bgp_type not in self.topo_routing['switches'][
self.sw_name]['prefixes'][host]:
nexthop_str = 'NoPathAvailable'
else:
if len(self.topo_routing['switches'][self.sw_name]
['prefixes'][host][bgp_type]) == 2:
self.topo_routing['switches'][self.sw_name][
'prefixes'][host][bgp_type].append(
self.topo_routing['switches'][self.sw_name]
['prefixes'][host][bgp_type][-1])
for nexthop in self.topo_routing['switches'][
self.sw_name]['prefixes'][host][bgp_type]:
tmp = 'y' if nha[i] == 0 else 'n'
nexthop_str = nexthop_str + str(
nexthop) + '(' + tmp + ')\t'
i += 1
nexthop_str = nexthop_str[:-1]
self.log_rerouting.info('nexthop\t'+host+'\t'+prefix+'\t'+ \
str(id_prefix)+'\t'+str(nexthop_str))
# Print log about the flow selector
for host in list(self.topo.get_hosts()):
prefix = self.topo.get_host_ip(host) + '/24'
for id_prefix in [
self.mapping_dic[host] * 2, self.mapping_dic[host] * 2 + 1
]:
sw = []
tmp = 'fs_key ' + host + ' ' + prefix + ' ' + str(
id_prefix) + '\t'
for i in range(0, 64):
with HiddenPrints():
binvalue = int(
self.controller.register_read(
'flowselector_key', 64 * id_prefix + i))
tmp = tmp + str(binvalue) + ','
sw.append(binvalue)
tmp = tmp[:-1]
self.log_fs.info(str(tmp))
sw = []
tmp = 'fs ' + host + ' ' + prefix + ' ' + str(id_prefix) + '\t'
for i in range(0, 64):
with HiddenPrints():
binvalue = int(
self.controller.register_read(
'flowselector_ts', 64 * id_prefix + i))
tmp = tmp + str(binvalue) + ','
sw.append(binvalue)
tmp = tmp[:-1]
self.log_fs.info(str(tmp))
sw = []
tmp = 'fs_last_ret ' + host + ' ' + prefix + ' ' + str(
id_prefix) + '\t'
for i in range(0, 64):
with HiddenPrints():
binvalue = int(
self.controller.register_read(
'flowselector_last_ret', 64 * id_prefix + i))
tmp = tmp + str(binvalue) + ','
sw.append(binvalue)
tmp = tmp[:-1]
self.log_fs.info(str(tmp))
sw = []
tmp = 'fs_last_ret_bin ' + host + ' ' + prefix + ' ' + str(
id_prefix) + '\t'
for i in range(0, 64):
with HiddenPrints():
binvalue = int(
self.controller.register_read(
'flowselector_last_ret_bin',
64 * id_prefix + i))
tmp = tmp + str(binvalue) + ','
sw.append(binvalue)
tmp = tmp[:-1]
self.log_fs.info(str(tmp))
sw = []
tmp = 'fs_fwloops ' + host + ' ' + prefix + ' ' + str(
id_prefix) + '\t'
for i in range(0, 64):
with HiddenPrints():
binvalue = int(
self.controller.register_read(
'flowselector_fwloops', 64 * id_prefix + i))
tmp = tmp + str(binvalue) + ','
sw.append(binvalue)
tmp = tmp[:-1]
self.log_fs.info(str(tmp))
sw = []
tmp = 'fs_correctness ' + host + ' ' + prefix + ' ' + str(
id_prefix) + '\t'
for i in range(0, 64):
with HiddenPrints():
binvalue = int(
self.controller.register_read(
'flowselector_correctness',
64 * id_prefix + i))
tmp = tmp + str(binvalue) + ','
sw.append(binvalue)
tmp = tmp[:-1]
self.log_fs.info(str(tmp))
def forwarding(self):
p4switches = self.topo.get_p4switches()
interfaces_to_node = p4switches[self.sw_name]['interfaces_to_node']
for k, v in interfaces_to_node.items():
try:
dst_mac = self.topo.get_hosts()[v][self.sw_name]['mac']
except KeyError:
dst_mac = self.topo.get_p4switches()[v][self.sw_name]['mac']
src_mac = p4switches[self.sw_name][v]['mac']
outport = p4switches[self.sw_name]['interfaces_to_port'][
p4switches[self.sw_name][v]['intf']]
self.log.info('table add send set_nh ' + str(self.mapping_dic[v]) +
' => ' + str(outport) + ' ' + str(src_mac) + ' ' +
str(dst_mac))
self.controller.table_add(
'send', 'set_nh', [str(self.mapping_dic[v])],
[str(outport), str(src_mac),
str(dst_mac)])
def run(self):
sock_list = [self.sock_controller]
controller_data = ''
while True:
inready, outready, excepready = select.select(sock_list, [], [])
for sock in inready:
if sock == self.sock_controller:
data_tmp = ''
toreturn = None
try:
data_tmp = sock.recv(100000000)
except socket.error, e:
err = e.args[0]
if not (err == errno.EAGAIN
or err == errno.EWOULDBLOCK):
print 'p4_to_controller: ', e
sock.close()
sock = None
if len(data_tmp) > 0:
controller_data += data_tmp
next_data = ''
while len(controller_data
) > 0 and controller_data[-1] != '\n':
next_data = controller_data[-1] + next_data
controller_data = controller_data[:-1]
toreturn = controller_data
controller_data = next_data
if toreturn is not None:
for line in toreturn.split('\n'):
if line.startswith('table add '):
line = line.rstrip('\n').replace(
'table add ', '')
fwtable_name = line.split(' ')[0]
action_name = line.split(' ')[1]
match_list = line.split(' => ')[0].split(
' ')[2:]
action_list = line.split(' => ')[1].split(' ')
print line
print fwtable_name, action_name, match_list, action_list
self.log.info(line)
self.controller.table_add(fwtable_name, action_name, \
match_list, action_list)
if line.startswith('do_register_write'):
line = line.rstrip('\n')
linetab = line.split(' ')
register_name = linetab[1]
index = int(linetab[2])
value = int(linetab[3])
self.log.info(line)
self.controller.register_write(register_name, \
index, value)
if line.startswith('reset_states'):
self.log.info('RESETTING_STATES')
# First stop the scheduler to avoid concurrent used
# of the Thirft server
self.t_sched.cancel()
while self.t_sched.running: # Wait the end of the log printing
time.sleep(0.5)
time.sleep(1)
# Reset the state of the switch
self.controller.register_reset(
'nh_avaibility_1')
self.controller.register_reset(
'nh_avaibility_2')
self.controller.register_reset(
'nh_avaibility_3')
self.controller.register_reset(
'nbflows_progressing_2')
self.controller.register_reset(
'nbflows_progressing_3')
self.controller.register_reset('rerouting_ts')
self.controller.register_reset(
'timestamp_reference')
self.controller.register_reset('sw_time')
self.controller.register_reset('sw_index')
self.controller.register_reset('sw_sum')
self.controller.register_reset('sw')
self.controller.register_reset(
'flowselector_key')
self.controller.register_reset(
'flowselector_nep')
self.controller.register_reset(
'flowselector_ts')
self.controller.register_reset(
'flowselector_last_ret')
self.controller.register_reset(
'flowselector_last_ret_bin')
self.controller.register_reset(
'flowselector_correctness')
self.controller.register_reset(
'flowselector_fwloops')
print self.sw_name, ' RESET.'
# Restart the scheduler
time.sleep(1)
self.t_sched.start()