Hi Yusuke,
parser.OFPMatch(nw_src=struct.
unpack("!I", socket.inet_aton('10.0.0.1'))[0])
That works!! Thanks a ton. I think as a community we should document that
so that it can help others!
Best Regards,
Vishlesh Patel
M.S. Computer Engineering
NYU Polytechnic School of Engineering
On Fri, Sep 25, 2015 at 1:06 AM, Vishlesh Patel <[email protected]>
wrote:
> Let me check and get back to you. Thanks!
>
>
> On Fri, Sep 25, 2015 at 1:05 AM, Yusuke Iwase <[email protected]>
> wrote:
>
>> Hi,
>>
>> How about using this instead of addrconv module?
>> e.g.) parser.OFPMatch(nw_src=struct.unpack("!I",
>> socket.inet_aton('10.0.0.1'))[0])
>>
>> Thanks,
>> Iwase
>>
>> On 2015年09月24日 15:38, Vishlesh Patel wrote:
>> > Hi,
>> >
>> > It is the same error i received last time without using addrconv method.
>> >
>> > Error: cannot convert argument to integer.
>> >
>> > hub: uncaught exception: Traceback (most recent call last):
>> > File "/usr/local/lib/python2.7/dist-packages/ryu/lib/hub.py", line
>> 52, in _launch
>> > func(*args, **kwargs)
>> > File
>> "/usr/local/lib/python2.7/dist-packages/ryu/base/app_manager.py", line 276,
>> in _event_loop
>> > handler(ev)
>> > File "/home/vishlesh/ryu-scripts/sample.py", line 79, in
>> switch_features_handler
>> > self.add_flow(datapath, 10, match, action)
>> > File "/home/vishlesh/ryu-scripts/sample.py", line 137, in add_flow
>> > datapath.send_msg(mod)
>> > File
>> "/usr/local/lib/python2.7/dist-packages/ryu/controller/controller.py", line
>> 235, in send_msg
>> > msg.serialize()
>> > File
>> "/usr/local/lib/python2.7/dist-packages/ryu/ofproto/ofproto_parser.py",
>> line 212, in serialize
>> > self._serialize_body()
>> > File
>> "/usr/local/lib/python2.7/dist-packages/ryu/ofproto/ofproto_v1_0_parser.py",
>> line 2135, in _serialize_body
>> > self.match.serialize(self.buf, offset)
>> > File
>> "/usr/local/lib/python2.7/dist-packages/ryu/ofproto/ofproto_v1_0_parser.py",
>> line 213, in serialize
>> > self.nw_src, self.nw_dst, self.tp_src, self.tp_dst)
>> > File "/usr/local/lib/python2.7/dist-packages/ryu/lib/pack_utils.py",
>> line 25, in msg_pack_into
>> > buf += struct.pack(fmt, *args)
>> > error: cannot convert argument to integer
>> >
>> > On Thu, Sep 24, 2015 at 2:12 AM, Yusuke Iwase <[email protected]
>> <mailto:[email protected]>> wrote:
>> >
>> > Hi,
>> >
>> > On 2015年09月24日 11:40, Vishlesh Patel wrote:
>> > > Hi Yusuke,
>> > >
>> > > Thanks for the reply. I tried it, still having same error.
>> >
>> > What error did you get?
>> >
>> > >
>> > > Code now looks like that:
>> > >
>> > > def add_layer4_rules(self, datapath, nw_proto, nw_dst, priority,
>> fwd_port ):
>> > > print " I am in method add_layer4_rules "
>> > > parser = datapath.ofproto_parser
>> > > actions = [parser.OFPActionOutput(fwd_port)]
>> > > match = parser.OFPMatch(nw_proto = nw_proto,
>> > > nw_dst = addrconv.ipv4.text_to_bin(nw_dst))
>> > > self.add_flow(datapath, priority, match, actions)
>> > >
>> > > # Member methods you can call to install general rules
>> > > def add_flow(self, datapath, priority, match, actions):
>> > > ofproto = datapath.ofproto
>> > > mod = datapath.ofproto_parser.OFPFlowMod(
>> > > datapath=datapath, match=match, cookie=0,
>> > > command=ofproto.OFPFC_ADD, idle_timeout=0,
>> hard_timeout=0,
>> > > priority = priority,
>> > > flags=ofproto.OFPFF_SEND_FLOW_REM,
>> actions=actions)
>> > > datapath.send_msg(mod)
>> > >
>> > >
>> > >
>> > >
>> > > Best Regards,
>> > > Vishlesh Patel
>> > > M.S. Computer Engineering
>> > > NYU Polytechnic School of Engineering
>> > >
>> > > On Wed, Sep 23, 2015 at 8:22 PM, Yusuke Iwase <
>> [email protected] <mailto:[email protected]> <mailto:
>> [email protected] <mailto:[email protected]>>> wrote:
>> > >
>> > > Hi,
>> > >
>> > > On 2015年09月23日 14:41, Vishlesh Patel wrote:
>> > > > Hi there,
>> > > >
>> > > > I am using RYU controller with flowvisor. As flowvisor do
>> not support any other version other than openflow v1. I am using openflow
>> v1 in my project.
>> > > >
>> > > > I have topology of 3 ovs switches and controller sits in
>> one of server conataining ovs bridge. Other two ovs bridge in other servers
>> connects to controller through public interface. But when run my ryu
>> application, it connects to switches but not able to add rules with nw_src
>> match . I am getting this error here:
>> > > >
>> > > > hub: uncaught exception: Traceback (most recent call last):
>> > > > File
>> "/usr/local/lib/python2.7/dist-packages/ryu/lib/hub.py", line 52, in _launch
>> > > > func(*args, **kwargs)
>> > > > File
>> "/usr/local/lib/python2.7/dist-packages/ryu/base/app_manager.py", line 276,
>> in _event_loop
>> > > > handler(ev)
>> > > > File "/home/vishlesh/ryu-scripts/sample.py", line 79, in
>> switch_features_handler
>> > > > self.add_flow(datapath, 10, match, action)
>> > > > File "/home/vishlesh/ryu-scripts/sample.py", line 137, in
>> add_flow
>> > > > datapath.send_msg(mod)
>> > > > File
>> "/usr/local/lib/python2.7/dist-packages/ryu/controller/controller.py", line
>> 235, in send_msg
>> > > > msg.serialize()
>> > > > File
>> "/usr/local/lib/python2.7/dist-packages/ryu/ofproto/ofproto_parser.py",
>> line 212, in serialize
>> > > > self._serialize_body()
>> > > > File
>> "/usr/local/lib/python2.7/dist-packages/ryu/ofproto/ofproto_v1_0_parser.py",
>> line 2135, in _serialize_body
>> > > > self.match.serialize(self.buf, offset)
>> > > > File
>> "/usr/local/lib/python2.7/dist-packages/ryu/ofproto/ofproto_v1_0_parser.py",
>> line 213, in serialize
>> > > > self.nw_src, self.nw_dst, self.tp_src, self.tp_dst)
>> > > > File
>> "/usr/local/lib/python2.7/dist-packages/ryu/lib/pack_utils.py", line 25, in
>> msg_pack_into
>> > > > buf += struct.pack(fmt, *args)
>> > > > error: cannot convert argument to integer
>> > > >
>> > > > My code is here:
>> > > > class SimpleSwitch(app_manager.RyuApp):
>> > > > OFP_VERSIONS = [ofproto_v1_0.OFP_VERSION]
>> > > > """
>> > > > Constructor:
>> > > > You can define some globally used variables inside
>> the class
>> > > > """
>> > > > def __init__(self, *args, **kwargs):
>> > > > super(SimpleSwitch, self).__init__(*args, **kwargs)
>> > > > # arp table: for searching
>> > > > self.arp_table ={"10.0.0.3":"53:54:00:69:ae:2b",
>> > > > "10.1.0.3":"52:54:00:cb:51:8b"}
>> > > > self.TCP_proto = 6
>> > > > self.UDP_proto = 17
>> > > > self.ICMP_proto = 1
>> > > >
>> > > > @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
>> > > >
>> > > > # Insert Static rule
>> > > > match1 = parser.OFPMatch()
>> > > > action1 =
>> [parser.OFPActionOutput(ofproto.OFPP_CONTROLLER)]
>> > > > self.add_flow(datapath, 0, match1, action1)
>> > > >
>> > > >
>> > > > match2 = parser.OFPMatch(dl_type =
>> ether.ETH_TYPE_ARP)
>> > > > action2 =
>> [parser.OFPActionOutput(ofproto.OFPP_CONTROLLER)]
>> > > > self.add_flow(datapath, 40, match2, action2)
>> > > > print "added rule#1"
>> > > >
>> > > > # Installing static rules to process TCP/UDP and
>> ICMP and ACL
>> > > > dpid = datapath.id <http://datapath.id> <
>> http://datapath.id> <http://datapath.id> # classifying the switch ID
>> > > > print("switch ",dpid," detected")
>> > > > if dpid == 2: # switch ovs of host 1
>> > > > match =
>> parser.OFPMatch(dl_type=ether.ETH_TYPE_IP,
>> > > > nw_proto=self.TCP_proto,
>> > > > nw_src = '10.0.0.3' , nw_dst = '10.1.0.3' )
>> > > > action = [parser.OFPActionOutput(2)]
>> > > > self.add_flow(datapath, 10, match, action)
>> > > >
>> > > > Please help.
>> > >
>> > > You need to convert IP/MAC address into binary data.
>> > >
>> > > e.g.)
>> > > from ryu.lib import addrconv
>> > > ...
>> > >
>> parser.OFPMatch(nw_src=addrconv.ipv4.text_to_bin('10.0.0.3'))
>> > >
>> > > This conversion is required in only OpenFlow1.0 with Ryu.
>> > >
>> > > Thanks,
>> > > Iwase
>> > >
>> > > >
>> > > >
>> > > > Best Regards,
>> > > > Vishlesh Patel
>> > > > M.S. Computer Engineering
>> > > > NYU Polytechnic School of Engineering
>> > > >
>> > > >
>> > > >
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