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sar_application_prefix_lenght.py
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sar_application_prefix_lenght.py
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from ryu.base import app_manager
from ryu.controller import ofp_event
from ryu.controller import dpset
from ryu.controller import ofp_event
from ryu.controller.handler import CONFIG_DISPATCHER, MAIN_DISPATCHER
from ryu.app.wsgi import ControllerBase, WSGIApplication, route
from ryu.controller.handler import set_ev_cls
from ryu.ofproto import ofproto_v1_3
from ryu.lib.packet import packet
from ryu.lib.packet import ethernet
from ryu.lib.packet import ether_types
from ryu.topology.api import get_switch, get_link, get_host, get_all_host
from ryu.topology import event, switches
import networkx as nx
import json
import logging
import struct
import ipaddress# For removing the dots in the IP Address
from webob import Response
from ryu.lib.mac import haddr_to_bin
from ryu.lib.packet.packet import Packet
from ryu.lib.packet import arp
from ryu.lib.packet import ipv4
from ryu.lib.packet import tcp
from ryu.lib.packet import udp
from ryu.ofproto import ether
from ryu.app.ofctl.api import get_datapath
# Packet Classification parameters
SRC_IP = 0
DST_IP = 1
PROTO = 2
SPORT = 3
DPORT = 4
ACTION = 5
# IP lookup parameters
IP = 0
SUBNET = 1
DPID = 2
# Topologies
TOPO = 2
###DEFINED FUNCTIONS AND CLASSES
class Tree:
def __init__(self):
self.left = None
self.right = None
self.father = None
self.len = None #corresponding to the len that the node is representing
self.index = None #corresponding to the index of the hash table that the node is representing
def construct(self, left, midle, right, hash_table):
#print(left," ",midle," ",right)
self.len = len(hash_table[midle][0])
self.index = midle
if midle - 1 > left:#It means there are hashes between the midle and left hashes
#creates a node correspondent to the hash table in the midle of the previous two hashes
self.left = Tree()
self.left.father = self
#print("left\n")
self.left.construct(left, left + int((midle-left)/2), midle, hash_table)
if midle + 1 < right:#It means there are hashes between the midle and left hashes
#creates a node correspondent to the hash table in the midle of the previous two hashes
self.right = Tree()
self.right.father = self
#print("right\n")
self.right.construct(midle , midle + int((right-midle)/2), right, hash_table)
def searchchildren(self, len):#Given the lenght of a node.
node = self
# navigate the tree
while 1:#Find the node correspondant to the given index (correspondent to the hash table of the same lenght)
#print(node.len)
if len == node.len:
break
else:
if len < node.len:
node = node.left
else:
node = node.right
#print(node.len)
#Return the hashes tables that have it correspondent nodes at the right of the found node
children = []
if node.right:
children.append(node.right.index)##
self.returnchildren(node.right, children)
#print(children)
return children
def returnchildren(self, node, children):
#Return all the children at the right##
#if not node.right and not node.left:#Just return the final nodes
# children.append(node.len)
#else:#In a recursive way it will find the final nodes
if node.left:
children.append(node.left.index)##
self.returnchildren(node.left, children)
if node.right:
children.append(node.right.index)##
self.returnchildren(node.right, children)
def addmarkers(self, hash_table, n):
for i in range(0, n):#for each hash table (node)
children = self.searchchildren(len(hash_table[i][0]))#find the final nodes at the right of this node (childrens)
#In the current node we will introduce the hashes of the childresn as markers
#print(i,"-----",children)
for j in children:
for k in hash_table[j]:
if k[:len(hash_table[i][0])] in hash_table[i]:
hash_table[i].remove(k[:len(hash_table[i][0])])
hash_table[i].append(k[:len(hash_table[i][0])]+"p")#The p indicates that it is a marker and a prefix.
else:
hash_table[i].append(k[:len(hash_table[i][0])]+"m")#The m indicates that it is just a marker
def addBMP(self, hash_table, n):
for i in range(n-1,0,-1):#for all the hash tables
#for each hash table it will be introduce the bmp value to the markers, this value corresponds at the backtrack prefix in case it is needed.
for j in hash_table[i]:
if j[len(hash_table[i][0]):] == "m":
k = i-1
found = None
while found != True:
for l in hash_table[k]:
if l[:len(hash_table[k][0])] == j[:len(hash_table[k][0])] and l[len(hash_table[k][0]):] != "m":
hash_table[i].append(l[:len(hash_table[k][0])]+"bmp")#Introduce the bmp as the prefix value plus "bmp" indicating it is a bmp.
found = True
break
k += -1
if k == -1: #just for security (avoid inifinite loop)
break
def lookup(self, hash_table, ip):
node = self
while 1:
if ip[:node.len] in list(map(lambda i:i[:node.len],hash_table[node.index])):#if the ip input sliced is in this hashtable
position=list(map(lambda i: i[:node.len], hash_table[node.index])).index(ip[:node.len])
if hash_table[node.index][position][-1:] == "m" or hash_table[node.index][position][-1:] == "p":#ask if it is a marker, in case it is, point to the right in case it is not, the prefix lenght is returned
node = node.right
else:
return node.index
else:#if the ip input is not found in the current hash table point to the left
if node.left:
node = node.left
else:#in case the hash is represented by a final node, we need to backtrak
#####Backtrack#######
node = node.father
while 1:
if "bmp" in list(map(lambda i:i[-3:],hash_table[node.index])):#cheking the father node has a bmp
position = list(map(lambda i:i[-3:],hash_table[node.index])).index("bmp")
len_bmp = len(hash_table[node.index][position][:-3])#taking the len correspondent to the index of the hash table that has the bactracked prefix
if hash_table[node.index][position][:len_bmp] == ip[:len_bmp]:
return self.search_index_len_bmp(len_bmp)
else:
node=node.father
def search_index_len_bmp(self ,len_bmp):
node = self
while 1:#Find the node correspondant to the given index (correspondent to the hash table of the same lenght)
#print(node.len)
if len_bmp == node.len:
break
else:
if len_bmp < node.len:
node = node.left
else:
node = node.right
return node.index
class SimpleSwitch13(app_manager.RyuApp):
OFP_VERSIONS = [ofproto_v1_3.OFP_VERSION]
_CONTEXTS = {'wsgi': WSGIApplication}
def __init__(self, *args, **kwargs):
super(SimpleSwitch13, self).__init__(*args, **kwargs)
wsgi = kwargs['wsgi']
self.topology_api_app = self
self.net = nx.DiGraph()
self.nodes = {}
self.links = {}
self.no_of_nodes = 0
self.no_of_links = 0
self.datapaths = []
self.switch_id = []
self.mac_to_port = {}
self.mac_to_dpid = {}
self.port_to_mac = {}
self.i=0
# Packet Classification initial parameters
self.classify = {}
self.classify["r1"] = ["195.0.0.1","128.128.0.1","6","*","1234","allow"]
self.classify["r2"] = ["128.128.0.1","195.0.0.1","6","1234","*","allow"]
self.classify["r3"] = ["195.0.0.1","128.128.0.1","1","*","*","allow"]
self.classify["r4"] = ["128.128.0.1","195.0.0.1","1","*","*","allow"]
self.classify["r5"] = ["*","*","*","*","*","deny"]
self.counters = {}
self.counters["r1"] = 0
self.counters["r2"] = 0
self.counters["r3"] = 0
self.counters["r4"] = 0
self.counters["r5"] = 0
if TOPO == 1:
self.switch = {}
self.switch["195.0.0.254" ] = ["195.0.0.254","8","1"]
self.switch["128.128.0.254"] = ["128.128.0.254","12","2"]
self.switch["154.128.0.254"] = ["154.128.0.254","16","3"]
self.lookup = {}
self.lookup["195.0.0.1"] = "195.0.0.254"
self.lookup["195.0.0.2"] = "195.0.0.254"
self.lookup["128.128.0.1"] = "128.128.0.254"
self.lookup["128.128.0.2"] = "128.128.0.254"
self.lookup["154.128.0.1"] = "154.128.0.254"
self.lookup["154.128.0.2"] = "154.128.0.254"
self.ip_to_mac = {}
self.ip_to_mac["195.0.0.1"] = "00:00:00:00:00:01"
self.ip_to_mac["195.0.0.2"] = "00:00:00:00:00:02"
self.ip_to_mac["128.128.0.1"] = "00:00:00:00:00:03"
self.ip_to_mac["128.128.0.2"] = "00:00:00:00:00:04"
self.ip_to_mac["154.128.0.1"] = "00:00:00:00:00:05"
self.ip_to_mac["154.128.0.2"] = "00:00:00:00:00:06"
elif TOPO == 2:
self.switch = {}
self.switch["195.0.0.254" ] = ["195.0.0.254","8","1"]
self.switch["128.128.0.254"] = ["128.128.0.254","12","2"]
self.switch["154.128.0.254"] = ["154.128.0.254","16","3"]
self.switch["197.160.0.254"] = ["197.160.0.254","24","4"]
self.switch["192.168.0.254"] = ["192.168.0.254","24","5"]
self.switch["192.169.0.254"] = ["192.169.0.254","24","6"]
self.switch["192.170.0.254"] = ["192.170.0.254","24","7"]
self.lookup = {}
self.lookup["195.0.0.1"] = "195.0.0.254"
self.lookup["195.0.0.2"] = "195.0.0.254"
self.lookup["128.128.0.1"] = "128.128.0.254"
self.lookup["154.128.0.1"] = "154.128.0.254"
self.lookup["197.160.0.1"] = "197.160.0.254"
self.lookup["192.168.0.1"] = "192.168.0.254"
self.lookup["192.169.0.1"] = "192.169.0.254"
self.lookup["192.170.0.1"] = "192.170.0.254"
self.ip_to_mac = {}
self.ip_to_mac["195.0.0.1"] = "00:00:00:00:00:01"
self.ip_to_mac["195.0.0.2"] = "00:00:00:00:00:02"
self.ip_to_mac["128.128.0.1"] = "00:00:00:00:00:03"
self.ip_to_mac["154.128.0.1"] = "00:00:00:00:00:04"
self.ip_to_mac["197.160.0.1"] = "00:00:00:00:00:05"
self.ip_to_mac["192.168.0.1"] = "00:00:00:00:00:06"
self.ip_to_mac["192.169.0.1"] = "00:00:00:00:00:07"
self.ip_to_mac["192.170.0.1"] = "00:00:00:00:00:08"
##############################GENERATION OF THE HASH TABLE###################################################################
self.tableprefix = []
label = 1
for i in self.switch:
############zero padding for 32 bit#############
binIP = str((bin(int(ipaddress.IPv4Address(unicode(i))))))[2:] # unicode for the IPv4 Address formatting
length_binIP = len(binIP)
fullBinary = int((32 - length_binIP)) * str(0) + binIP
############cutting the prefix with the netmask##############
prefix = [fullBinary[:int(self.switch[i][SUBNET])], label, self.switch[i][IP]]
self.tableprefix.append(prefix)
#####Put in Order the table Prefix and add a label######
for i in range(0, len(self.tableprefix) - 1):
for j in range(i, len(self.tableprefix)):
if self.tableprefix[i][0].__len__() > self.tableprefix[j][0].__len__():
temp = self.tableprefix[i]
self.tableprefix[i] = self.tableprefix[j]
self.tableprefix[j] = temp
self.tableprefix[i][1] = label
label += 1
self.tableprefix[i + 1][1] = label
# for prefix in self.tableprefix:
# print(prefix)
###################CREATE THE HASH TABLE##########################################################
self.hash_table = []
longest_prfx = len(self.tableprefix[label - 1][0]) # take the lenght of the last prefix in the table that corresponds to the largest prefix
# print(longest_prfx)
for i in range(0, longest_prfx + 1): # take i as the lenght of each possible prefix form 0 to the longest one
self.hash_table.append([]) # create an array inside every i i = hash table, j = prefixes
for j in self.tableprefix: # for each prefix in the table
if i == len(j[0]): # if the lenght of the prefix correspond to the courrent lenght we append it
self.hash_table[i].append(j[0])
elif i < len(j[0]): # since the prefix table is in order, if the variable i is less than the courrent prefix lenght it is no necessary to look all the following prefixes
break
# print(hash_table)
self.hash_table = list(filter(None, self.hash_table))
###############################CONSTRUCT THE TREE#######################################
self.tree = Tree()
midle = int(len(self.hash_table) / 2)
lenght = int(len(self.hash_table))
self.tree.construct(-1, midle, lenght, self.hash_table)
# print(hash_table)
self.tree.addmarkers(self.hash_table, lenght) # Adding the markers
# print(hash_table)
self.tree.addBMP(self.hash_table, lenght)
###############################################################################################################################################################
def ls(self,obj):
print("\n".join([x for x in dir(obj) if x[0] != "_"]))
def send_arp(self, datapath, opcode, srcMac, srcIp, dstMac, dstIp, outPort):
if opcode == 1:
targetMac = "00:00:00:00:00:00"
targetIp = dstIp
elif opcode == 2:
targetMac = dstMac
targetIp = dstIp
e = ethernet.ethernet(dstMac, srcMac, ether.ETH_TYPE_ARP)
a = arp.arp(1, 0x0800, 6, 4, opcode, srcMac, srcIp, targetMac, targetIp)
p = Packet()
p.add_protocol(e)
p.add_protocol(a)
p.serialize()
actions = [datapath.ofproto_parser.OFPActionOutput(outPort, 0)]
out = datapath.ofproto_parser.OFPPacketOut(
datapath=datapath,
buffer_id=0xffffffff,
in_port=datapath.ofproto.OFPP_CONTROLLER,
actions=actions,
data=p.data)
datapath.send_msg(out)
@set_ev_cls(ofp_event.EventOFPSwitchFeatures, CONFIG_DISPATCHER)
def switch_features_handler(self, ev):
datapath = ev.msg.datapath
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
msg = ev.msg
self.datapaths.append(msg.datapath)
self.switch_id.append(msg.datapath_id)
match = parser.OFPMatch()
actions = [parser.OFPActionOutput(ofproto.OFPP_CONTROLLER,
ofproto.OFPCML_NO_BUFFER)]
self.add_flow(datapath, 0, match, actions)
def add_flow(self, datapath, priority, match, actions, buffer_id=None):
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS,
actions)]
if buffer_id:
mod = parser.OFPFlowMod(datapath=datapath, buffer_id=buffer_id,
priority=priority, match=match,
instructions=inst)
else:
mod = parser.OFPFlowMod(datapath=datapath, priority=priority,
match=match, instructions=inst)
datapath.send_msg(mod)
@set_ev_cls(ofp_event.EventOFPPacketIn, MAIN_DISPATCHER)
def _packet_in_handler(self, ev):
if ev.msg.msg_len < ev.msg.total_len:
self.logger.debug("packet truncated: only %s of %s bytes",
ev.msg.msg_len, ev.msg.total_len)
msg = ev.msg
datapath = msg.datapath
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
in_port = msg.match['in_port']
pkt = packet.Packet(msg.data)
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_src = datapath.id
# TOPOLOGY DISCOVERY------------------------------------------
switch_list = get_switch(self.topology_api_app, None)
switches=[switch.dp.id for switch in switch_list]
self.net.add_nodes_from(switches)
links_list = get_link(self.topology_api_app, None)
links=[(link.src.dpid,link.dst.dpid,{'port':link.src.port_no}) for link in links_list]
self.net.add_edges_from(links)
links=[(link.dst.dpid,link.src.dpid,{'port':link.dst.port_no}) for link in links_list]
self.net.add_edges_from(links)
# print links
# MAC LEARNING-------------------------------------------------
self.mac_to_port.setdefault(dpid_src, {})
self.mac_to_port.setdefault(src, {})
self.port_to_mac.setdefault(dpid_src, {})
self.mac_to_port[dpid_src][src] = in_port
self.mac_to_dpid[src] = dpid_src
self.port_to_mac[dpid_src][in_port] = src
self.logger.info("Packet in the controller from switch: %s", dpid_src)
#print self.mac_to_port
# HANDLE ARP PACKETS--------------------------------------------
if eth.ethertype == ether_types.ETH_TYPE_ARP:
arp_packet = pkt.get_protocol(arp.arp)
arp_dst_ip = arp_packet.dst_ip
arp_src_ip = arp_packet.src_ip
# self.logger.info("ARP packet from switch: %s source IP: %s destination IP: %s from port: %s", dpid_src, arp_src_ip, arp_dst_ip, in_port)
# self.logger.info("ARP packet from switch: %s source MAC: %s destination MAC:%s from port: %s", dpid_src, src, dst, in_port)
if arp_dst_ip in self.ip_to_mac:
if arp_packet.opcode == 1:
# send arp reply (SAME SUBNET)
dstIp = arp_src_ip
srcIp = arp_dst_ip
dstMac = src
srcMac = self.ip_to_mac[arp_dst_ip]
outPort = in_port
opcode = 2 # arp reply packet
self.send_arp(datapath, opcode, srcMac, srcIp, dstMac, dstIp, outPort)
else:
if arp_packet.opcode == 1:
# send arp reply (GATEWAY)
dstIp = arp_src_ip
srcIp = arp_dst_ip
dstMac = src
srcMac = self.port_to_mac[dpid_src][in_port]
outPort = in_port
opcode = 2 # arp reply packet
self.send_arp(datapath, opcode, srcMac, srcIp, dstMac, dstIp, outPort)
# HANDLE IP PACKETS-----------------------------------------------
ip4_pkt = pkt.get_protocol(ipv4.ipv4)
if ip4_pkt:
src_ip = ip4_pkt.src
dst_ip = ip4_pkt.dst
proto = str(ip4_pkt.proto)
sport = "0"
dport = "0"
if proto == "6":
tcp_pkt = pkt.get_protocol(tcp.tcp)
sport = str(tcp_pkt.src_port)
dport = str(tcp_pkt.dst_port)
if proto == "17":
udp_pkt = pkt.get_protocol(udp.udp)
sport = str(udp_pkt.src_port)
dport = str(udp_pkt.dst_port)
self.logger.info("Packet from the switch: %s, source IP: %s, destination IP: %s, From the port: %s", dpid_src, src_ip, dst_ip, in_port)
#######################################################################################################################################################
# PACKET CLASSIFICATION FUNCTION: it returns action: "allow" or "deny"
# action_rule = self.linear_classification(src_ip, dst_ip, proto, sport, dport)
action_rule = "allow"
if action_rule == "allow":
# IP LOOKUP FUNCTION: it is zero if it didn't find a solution
destination_switch_IP = self.prefix_lenght_search(dst_ip)
#######################################################################################################################################################
if destination_switch_IP != "0":
datapath_dst = get_datapath(self,int(self.switch[destination_switch_IP][DPID]))
dpid_dst = datapath_dst.id
self.logger.info(" --- Destination present on switch: %s", dpid_dst)
# Shortest path computation
path = nx.shortest_path(self.net,dpid_src,dpid_dst)
self.logger.info(" --- Shortest path: %s", path)
if len(path) == 1:
In_Port = self.mac_to_port[dpid_src][src]
Out_Port = self.mac_to_port[dpid_dst][dst]
actions_1 = [datapath.ofproto_parser.OFPActionOutput(Out_Port)]
actions_2 = [datapath.ofproto_parser.OFPActionOutput(In_Port)]
match_1 = parser.OFPMatch(in_port=In_Port, eth_dst=dst)
self.add_flow(datapath, 1, match_1, actions_1)
actions = [datapath.ofproto_parser.OFPActionOutput(Out_Port)]
data = msg.data
pkt = packet.Packet(data)
eth = pkt.get_protocols(ethernet.ethernet)[0]
# self.logger.info(" --- Changing destination mac to %s" % (eth.dst))
pkt.serialize()
out = datapath.ofproto_parser.OFPPacketOut(
datapath=datapath, buffer_id=0xffffffff, in_port=datapath.ofproto.OFPP_CONTROLLER,
actions=actions, data=pkt.data)
datapath.send_msg(out)
elif len(path) == 2:
path_port = self.net[path[0]][path[1]]['port']
actions = [datapath.ofproto_parser.OFPActionOutput(path_port)]
data = msg.data
pkt = packet.Packet(data)
eth = pkt.get_protocols(ethernet.ethernet)[0]
eth.src = self.ip_to_mac[src_ip]
eth.dst = self.ip_to_mac[dst_ip]
# self.logger.info(" --- Changing destination mac to %s" % (eth.dst))
pkt.serialize()
out = datapath.ofproto_parser.OFPPacketOut(
datapath=datapath, buffer_id=0xffffffff, in_port=datapath.ofproto.OFPP_CONTROLLER,
actions=actions, data=pkt.data)
datapath.send_msg(out)
elif len(path) > 2:
# Add flows in the middle of the network path
for i in range(1, len(path)-1):
In_Port = self.net[path[i]][path[i-1]]['port']
Out_Port = self.net[path[i]][path[i+1]]['port']
dp = get_datapath(self, path[i])
# self.logger.info("Matched OpenFlow Rule = switch: %s, from in port: %s, to out port: %s, source IP: %s, and destination IP: %s", path[i], In_Port, Out_Port, src_ip, dst_ip)
actions_1 = [dp.ofproto_parser.OFPActionOutput(Out_Port)]
match_1 = parser.OFPMatch(in_port=In_Port, eth_type = 0x0800, ipv4_src=src_ip, ipv4_dst=dst_ip)
self.add_flow(dp, 1, match_1, actions_1)
path_port = self.net[path[0]][path[1]]['port']
actions = [datapath.ofproto_parser.OFPActionOutput(path_port)]
data = msg.data
pkt = packet.Packet(data)
eth = pkt.get_protocols(ethernet.ethernet)[0]
# change the mac address of packet
eth.src = self.ip_to_mac[src_ip]
eth.dst = self.ip_to_mac[dst_ip]
# self.logger.info(" --- Changing destination mac to %s" % (eth.dst))
pkt.serialize()
out = datapath.ofproto_parser.OFPPacketOut(
datapath=datapath, buffer_id=0xffffffff, in_port=datapath.ofproto.OFPP_CONTROLLER,
actions=actions, data=pkt.data)
datapath.send_msg(out)
@set_ev_cls(event.EventSwitchEnter)
def get_topology_data(self, ev):
switch_list = get_switch(self.topology_api_app, None)
switches=[switch.dp.id for switch in switch_list]
self.net.add_nodes_from(switches)
links_list = get_link(self.topology_api_app, None)
links=[(link.src.dpid,link.dst.dpid,{'port':link.src.port_no}) for link in links_list]
self.net.add_edges_from(links)
links=[(link.dst.dpid,link.src.dpid,{'port':link.dst.port_no}) for link in links_list]
self.net.add_edges_from(links)
# print "**********List of links"
# print self.net.edges()
#for link in links_list:
#print link.dst
#print link.src
#print "Novo link"
#self.no_of_links += 1
#-------------------------------------------------------------------------------------------------------
def linear_search(self, dst_ip):
self.logger.info(" --- IP address Lookup")
if dst_ip in self.lookup:
destination_switch_IP = self.lookup[dst_ip]
return destination_switch_IP
else:
destination_switch_IP = "0"
return destination_switch_IP
####################Binary Lenght Search######################################################################################
def prefix_lenght_search(self, dst_ip):
self.logger.info(" --- Prefix lenght Search")
self.logger.info("Destination IP: %s", dst_ip)
############zero padding for 32 bit#############
bin_dst_ip = str((bin(int(ipaddress.IPv4Address(unicode(dst_ip))))))[2:]
length_bin_dst_ip = len(bin_dst_ip)
ipsearch = int((32 - length_bin_dst_ip)) * str(0) + bin_dst_ip
##############################################################
x = self.tree.lookup(self.hash_table, ipsearch)
hash = [w[:len(self.hash_table[x][0])] for w in self.hash_table[x]] # slice the prefixes to take of the m in the resulting hash table
for i in self.tableprefix: # searh and return the next hop ip finfing its correspondent prefix.
if self.hash_table[x][hash.index(ipsearch[:len(self.hash_table[x][0])])][:len(self.hash_table[x][0])] == i[0]:
self.logger.info("Next Hop Returned: %s", i[2])
return i[2]
###############################################################################################################################
def linear_classification(self, src_ip, dst_ip, proto, sport, dport):
action = "deny"
self.logger.info(" --- Packet classification")
# check matching rule
for rule in sorted(self.classify):
match = self.classify[rule]
if (match[SRC_IP] == src_ip or match[SRC_IP] == "*") and \
(match[DST_IP] == dst_ip or match[DST_IP] == "*") and \
(match[PROTO] == proto or match[PROTO] == "*") and \
(match[SPORT] == sport or match[SPORT] == "*") and \
(match[DPORT] == dport or match[DPORT] == "*") :
self.logger.info(" --- Packet matched rule %s. Action is %s" % (rule, match[ACTION]))
action = match[ACTION]
self.counters[rule] = self.counters[rule] + 1
return action
return action
app_manager.require_app('ryu.app.ws_topology')
app_manager.require_app('ryu.app.ofctl_rest')
app_manager.require_app('ryu.app.gui_topology.gui_topology')