Hello,
I have another question about making the Ryu controller know about the RSSI
of the AP ( in mininet-wifi) and take handover decisions. I searched about
this topic in the mailing list, but didn't get any clear answer. I want to
start from a point where the Ryu controller can receive beacons if the
signal is going under a certain threshold.
Do you have an idea how to do this?
Thanks in advance,
Nadia
On Thu, Apr 12, 2018 at 8:06 AM, nadia mouawad <mouawad.na...@gmail.com>
wrote:
> Good morning,
>
> Actually, I was sure about the matching field. And I didn't want to take
> the priority in consideration. My problem
> was solved when i changed this:
>
> mod = parser.OFPFlowMod(datapath=datapath,match=match, cookie=0,command=
> *ofproto_v1_3*.OFPFC_DELETE,out_port=*ofproto_v1_3*.OFPP_ANY,
> out_group=*ofproto_v1_3*.OFPG_ANY, idle_timeout=0,
> hard_timeout=0,priority=2,flags=ofproto.OFPFF_SEND_FLOW_REM)
> datapath.send_msg(mod)
>
> I don't know if it is because I am using the OpenFlow 1.3 despite the fact
> that I saw several codes examples using OpenFlow 1.3 and using
> ofproto.OFPFC_DELETE.
>
> Anyway thank you for your response.
>
> On Thu, Apr 12, 2018 at 4:34 AM, IWAMOTO Toshihiro <iwam...@valinux.co.jp>
> wrote:
>
>> On Wed, 11 Apr 2018 23:41:18 +0900,
>> nadia mouawad wrote:
>> >
>> > Good morning,
>> > I have a question concerning deleting flows. My code is the following:
>> > def del_flow(self, datapath, match):
>> > ofproto = datapath.ofproto
>> > parser = datapath.ofproto_parser
>> > #actions1 = [parser.OFPActionOutput(ofproto.OFPP_CONTROLLER,
>> > ofproto.OFPCML_NO_BUFFER)]
>> > #if actions!=actions1:
>> > mod = parser.OFPFlowMod(datapath=datapath,match=match,
>> > cookie=0,command=ofproto.OFPFC_DELETE,out_port=ofproto.OFPP_ANY,
>> > out_group=ofproto.OFPG_ANY, idle_timeout=0,
>> > hard_timeout=0,priority=2,flags=ofproto.OFPFF_SEND_FLOW_REM)
>>
>> You are using the non-strict delete command. The priority field
>> (and timeout fields too, IIRC) will be ignored.
>>
>> > datapath.send_msg(mod)
>> > # get buffer from the send queue
>> > #buf = datapath.send_q.get()
>> > # send buffer
>> > #datapath.socket.sendall(buf)
>> > print("delete flow %s",datapath.id ,mod)
>> > """
>> >
>> >
>> > However, when I try to call del_flow, flows are not deleted. Can you
>> help
>> > me fix this problem??
>> >
>>
>> Do you get any errors? I guess the match field isn't matching against
>> your flows.
>>
>> --
>> IWAMOTO Toshihiro
>>
>
>
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