Hi Yusuke,
Thanks for the reply. I tried it, still having same error.
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]>
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> # 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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>
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