def switch_handler(self, address, fd, events):
if events & io_loop.READ:
data = self.sock_sw.recv(1024)
if data == '':
print "switch disconnected"
io_loop.remove_handler(self.fd_sw)
print "closing connection to controller"
self.sock_con.close()
io_loop.remove_handler(self.fd_con)
else:
rmsg = of.ofp_header(data[0:8])
if rmsg.type == 6:
print "OFPT_FEATURES_REPLY" #Actually,we just need to change here.
header = of.ofp_header(data[0:8])
print "ofp_features_reply.xid ", header.xid
msg = of.ofp_features_reply(data[8:32]) #all sw type should make the convertion. Because our protocol need to use in all nets.
msg_port = data[32:]
msg = header/msg/msg_port
self.dpid=msg.datapath_id #record the dpid
data = convert.of2ofc(msg, self.buffer, self.dpid)
elif rmsg.type == 10:
pkt_in_msg = of.ofp_packet_in(data[8:18])
pkt_parsed = of.Ether(data[18:])
self.counter+=1
#[port + id+ dpid] --> [buffer_id + pkt_in_msg]
if isinstance(pkt_parsed.payload, of.IP) or isinstance(pkt_parsed.payload.payload, of.IP):
self.buffer[(pkt_in_msg.in_port, self.counter, self.dpid)] = [pkt_in_msg.buffer_id, rmsg/pkt_in_msg/pkt_parsed] # bind buffer id with in port
rmsg.xid = self.counter # use the counter to check the buffer
data = rmsg/pkt_in_msg/pkt_parsed
elif rmsg.type ==11:
match = ofc.ofp_match(data[12:48]) #data[8:12]is wildcards
for flow in self.flow_cache:
if match == ofc.ofp_match(str(flow[1])[12:48]):
self.flow_cache.remove(flow) #delete the flow
elif rmsg.type == 17:
print "stats_reply" ,len(data)
body = data[8:]
reply_header = of.ofp_stats_reply(body[:4])
if reply_header.type == 1 and len(data)>91:
reply_body_match = ofc.ofp_match(body[12:48])
reply_body_data2 = ofc.ofp_flow_stats_data(body[48:92])
if reply_body_data2.byte_count == 0 and reply_body_data2.packet_count == 0: #it is a junck flow,delete it!
for flow in self.flow_cache:
if reply_body_match == ofc.ofp_match(str(flow[1])[12:48]):
self.flow_cache.remove(flow)
io_loop.update_handler(self.fd_con, io_loop.WRITE)
self.queue_con.put(str(data))
if events & io_loop.WRITE:
try:
next_msg = self.queue_sw.get_nowait()
except Queue.Empty:
#print "%s queue empty" % str(address)
io_loop.update_handler(self.fd_sw, io_loop.READ)
else:
#print 'sending "%s" to %s' % (of.ofp_type[of.ofp_header(next_msg).type], self.sock_sw.getpeername())
self.sock_sw.send(next_msg)
18 okay "OFPT_BARRIER_REQUEST",
19 okay "OFPT_BARRIER_REPLY",
20 okay "OFPT_QUEUE_GET_CONFIG_REQUEST",
21 okay "OFPT_QUEUE_GET_CONFIG_REPLY"
24 oaky "OFPT_CFEATURES_REPLY"
0xfe oaky "OFPT_CPORT_STATUS"
0xff okay "OFPT_CFLOW_MO
"""
if __name__ == '__main__':
import convert
import libopenflow as of
#a = ofp_cfeatures_reply()
#b = ofp_phy_cport()
#c = ofp_phy_cport()
#d=ofp_header(type =24,length = 32+78*2)/ofp_cfeatures_reply(n_cports=2)/ofp_phy_cport()/sup_wave_port_bandwidth(num_lmda=4)/ofp_phy_cport()/sup_wave_port_bandwidth(num_lmda=5)
#d.show()
#a.n_cports=2
#a.OFPC_TABLE_STATS=100
#a.OFPST_T_OTN = 1
#a.SUPP_SW_GRAN = 129
#print a.SUPP_SW_GRAN
buffer = {}
dpid = 8
e = of.ofp_header(type =6)/of.ofp_features_reply(datapath_id=1)/of.ofp_phy_port(port_no=1)/of.ofp_phy_port(port_no=2)\
/of.ofp_phy_port(port_no=3)/of.ofp_phy_port(port_no=4)/of.ofp_phy_port(port_no=5)
f = convert.of2ofc(e, buffer, dpid)
f.show()
p = str(f)
18 okay "OFPT_BARRIER_REQUEST",
19 okay "OFPT_BARRIER_REPLY",
20 okay "OFPT_QUEUE_GET_CONFIG_REQUEST",
21 okay "OFPT_QUEUE_GET_CONFIG_REPLY"
24 oaky "OFPT_CFEATURES_REPLY"
0xfe oaky "OFPT_CPORT_STATUS"
0xff okay "OFPT_CFLOW_MO
"""
if __name__ == '__main__':
import convert
import libopenflow as of
#a = ofp_cfeatures_reply()
#b = ofp_phy_cport()
#c = ofp_phy_cport()
#d=ofp_header(type =24,length = 32+78*2)/ofp_cfeatures_reply(n_cports=2)/ofp_phy_cport()/sup_wave_port_bandwidth(num_lmda=4)/ofp_phy_cport()/sup_wave_port_bandwidth(num_lmda=5)
#d.show()
#a.n_cports=2
#a.OFPC_TABLE_STATS=100
#a.OFPST_T_OTN = 1
#a.SUPP_SW_GRAN = 129
#print a.SUPP_SW_GRAN
buffer = {}
dpid = 8
e = of.ofp_header(type =6)/of.ofp_features_reply(datapath_id=1)/of.ofp_phy_port(port_no=1)/of.ofp_phy_port(port_no=2)\
/of.ofp_phy_port(port_no=3)/of.ofp_phy_port(port_no=4)/of.ofp_phy_port(port_no=5)
f = convert.of2ofc(e, buffer, dpid)
f.show()
p = str(f)
def switch_handler(self, address, fd, events):
if events & io_loop.READ:
data = self.sock_sw.recv(1024)
if data == '':
print "switch disconnected"
io_loop.remove_handler(self.fd_sw)
print "closing connection to controller"
self.sock_con.close()
io_loop.remove_handler(self.fd_con)
else:
rmsg = of.ofp_header(data[0:8])
if rmsg.type == 6:
print "OFPT_FEATURES_REPLY" #Actually,we just need to change here.
header = of.ofp_header(data[0:8])
print "ofp_features_reply.xid ", header.xid
msg = of.ofp_features_reply(
data[8:32]
) #all sw type should make the convertion. Because our protocol need to use in all nets.
msg_port = data[32:]
msg = header / msg / msg_port
self.dpid = msg.datapath_id #record the dpid
data = convert.of2ofc(msg, self.buffer, self.dpid)
elif rmsg.type == 10:
pkt_in_msg = of.ofp_packet_in(data[8:18])
pkt_parsed = of.Ether(data[18:])
self.counter += 1
#[port + id+ dpid] --> [buffer_id + pkt_in_msg]
if isinstance(pkt_parsed.payload, of.IP) or isinstance(
pkt_parsed.payload.payload, of.IP):
self.buffer[(pkt_in_msg.in_port, self.counter,
self.dpid)] = [
pkt_in_msg.buffer_id,
rmsg / pkt_in_msg / pkt_parsed
] # bind buffer id with in port
rmsg.xid = self.counter # use the counter to check the buffer
data = rmsg / pkt_in_msg / pkt_parsed
elif rmsg.type == 11:
match = ofc.ofp_match(data[12:48]) #data[8:12]is wildcards
for flow in self.flow_cache:
if match == ofc.ofp_match(str(flow[1])[12:48]):
self.flow_cache.remove(flow) #delete the flow
elif rmsg.type == 17:
print "stats_reply", len(data)
body = data[8:]
reply_header = of.ofp_stats_reply(body[:4])
if reply_header.type == 1 and len(data) > 91:
reply_body_match = ofc.ofp_match(body[12:48])
reply_body_data2 = ofc.ofp_flow_stats_data(body[48:92])
if reply_body_data2.byte_count == 0 and reply_body_data2.packet_count == 0: #it is a junck flow,delete it!
for flow in self.flow_cache:
if reply_body_match == ofc.ofp_match(
str(flow[1])[12:48]):
self.flow_cache.remove(flow)
io_loop.update_handler(self.fd_con, io_loop.WRITE)
self.queue_con.put(str(data))
if events & io_loop.WRITE:
try:
next_msg = self.queue_sw.get_nowait()
except Queue.Empty:
#print "%s queue empty" % str(address)
io_loop.update_handler(self.fd_sw, io_loop.READ)
else:
#print 'sending "%s" to %s' % (of.ofp_type[of.ofp_header(next_msg).type], self.sock_sw.getpeername())
self.sock_sw.send(next_msg)
