Hi,
On 2015年04月06日 04:17, MD.Badruzzaman Shakib wrote:
> Hi again,
>
> I have made following modification in 'match' field of my add_flow function -
>
>
> match = datapath.ofproto_parser.OFPMatch(
>
> ipv4_dst=ipv4_to_bin(dst))
>
> But now when I send dst = 11.0.1.1 to the add_flow function I get the
> following error(check the bold section):
>
> hub: uncaught exception: Traceback (most recent call last):
> File "/home/sakib/ryu/ryu/lib/hub.py", line 52, in _launch
> func(*args, **kwargs)
> File "/home/sakib/ryu/ryu/base/app_manager.py", line 274, in _event_loop
> handler(ev)
> File "/home/sakib/Desktop/shortest_path/shortest_path2.py", line 158, in
> _packet_in_handler
> self.add_flow(datapath, dst, actions)
> File "/home/sakib/Desktop/shortest_path/shortest_path2.py", line 78, in
> add_flow
> ipv4_dst=ipv4_to_bin(dst))
> File "/home/sakib/ryu/ryu/ofproto/ofproto_v1_3_parser.py", line 831, in
> __init__
> (k, v) in kwargs.iteritems())
> File "/home/sakib/ryu/ryu/ofproto/ofproto_v1_3_parser.py", line 831, in
> <genexpr>
> (k, v) in kwargs.iteritems())
> File "/home/sakib/ryu/ryu/ofproto/oxm_fields.py", line 233, in
> _normalize_user
> (n, v, m) = mod.oxm_from_user(k, uv)
> File "/home/sakib/ryu/ryu/ofproto/oxm_fields.py", line 189, in _from_user
> value = t.from_user(value)
> File "/home/sakib/ryu/ryu/lib/addrconv.py", line 27, in text_to_bin
> return self._addr(text, **self._addr_kwargs).packed
> File "/usr/local/lib/python2.7/dist-packages/netaddr/ip/__init__.py", line
> 315, in __init__
> % (addr, self._module.version))
> *AddrFormatError: base address '\x0b\x00\x01\x01' is not IPv4*
>
> How 11.0.1.1 is not an IPv4 address!!!!!
>
> Can anyone please help?
ipv4_to_bin is not required.
Examples are as follows.
dst = '11.0.1.1'
match = parser.OFPMatch(eth_type=2048, ipv4_dst=dst)
thanks
>
>
>
>
>
> On Friday, 3 April 2015, 15:49, MD.Badruzzaman Shakib <[email protected]>
> wrote:
>
>
>
> Hello everyone,
>
> In my application I want to match destination address while adding flows.
> I am using OFP1.3. The main problem is when I match the destination ip I used
>
> match = datapath.ofproto_parser.OFPMatch(
> *dl_dst*=ipv4_to_bin(dst))
>
> Here this *dl_dst* creates problem because it is not a valid parameter of
> OFPMatch may be. But I do not know what should I do to match the ipv4
> address. Can anyone please tell me what should I write in the match field to
> match destination ip in OFP1.3 ? Detailed explanation of my problem is given
> below(notice only the *bold *sections)-
>
>
> when packet_in occurs-
> msg = ev.msg
> pkt = packet.Packet(msg.data)
> nw = pkt.get_protocol(ipv4.ipv4)
> src = nw.src
> dst = nw.dst
>
> I add flow as follow-
> ........
> ........
> print "*Adding flows*"
> actions = [datapath.ofproto_parser.OFPActionOutput(out_port)]
> self.add_flow(datapath, dst, actions)
> print "*Flow Added*"
>
> My add_flow function is as follow-
>
> def add_flow(self, datapath, dst, actions):
> ofproto = datapath.ofproto
>
> match = datapath.ofproto_parser.OFPMatch(
> *dl_dst=ipv4_to_bin(dst)*)
>
> mod = datapath.ofproto_parser.OFPFlowMod(
> datapath=datapath, match=match, cookie=0,
> command=ofproto.OFPFC_ADD, idle_timeout=0,
> hard_timeout=0,
> priority=ofproto.OFP_DEFAULT_PRIORITY,
> flags=ofproto.OFPFF_SEND_FLOW_REM, actions=actions)
>
> datapath.send_msg(mod)
>
>
> My application prints that "*Adding flows*" but after that when it goes
> to the add_flow function. it gives the following error-
>
> hub: uncaught exception: Traceback (most recent call last):
> File "/home/sakib/ryu/ryu/lib/hub.py", line 52, in _launch
> func(*args, **kwargs)
> File "/home/sakib/ryu/ryu/base/app_manager.py", line 274, in _event_loop
> handler(ev)
> File "/home/sakib/Desktop/shortest_path/shortest_path2.py", line 155,
> in _packet_in_handler
> *self.add_flow(datapath, dst, actions)*
> File "/home/sakib/Desktop/shortest_path/shortest_path2.py", line 77, in
> add_flow
> *dl_dst=ipv4_to_bin(dst))*
> File "/home/sakib/ryu/ryu/ofproto/ofproto_v1_3_parser.py", line 831, in
> __init__
> (k, v) in kwargs.iteritems())
> File "/home/sakib/ryu/ryu/ofproto/ofproto_v1_3_parser.py", line 831, in
> <genexpr>
> (k, v) in kwargs.iteritems())
> File "/home/sakib/ryu/ryu/ofproto/oxm_fields.py", line 233, in
> _normalize_user
> (n, v, m) = mod.oxm_from_user(k, uv)
> File "/home/sakib/ryu/ryu/ofproto/oxm_fields.py", line 180, in
> _from_user
> (num, t) = _get_field_info_by_name(name_to_field, name)
> File "/home/sakib/ryu/ryu/ofproto/oxm_fields.py", line 170, in
> _get_field_info_by_name
> raise *KeyError('unknown match field ' + name)*
> *KeyError: 'unknown match field dl_dst'*
>
> Thanks in advance for your cooperation.
>
> Regards
> Sakib
>
>
>
>
>
>
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> things parallel software development, from weekly thought leadership blogs to
> news, videos, case studies, tutorials and more. Take a look and join the
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