Hi,
I am using Mininet and openvswitch. I try to delete the flow entry by RYU
controller, but it doesn't work
This is function to del-flow which I change












*def del_flow(self, datapath, priority, in_port, out_port):        ofproto
= datapath.ofproto        parser = datapath.ofproto_parser        match  =
parser.OFPMatch(in_port=in_port)        print ">>>>>DEBUG: Del flow <",
datapath.id <http://datapath.id> ,"> in_port, out_put, priority: ",
in_port, out_port, priority        mod = parser.OFPFlowMod(
datapath=datapath,            match=match,
out_port=out_port,            command=ofproto.OFPFC_DELETE)
datapath.send_msg(mod)*

I debug on s1 switch, and I saw it receive the message del-flow. But it
doesn't remove the flow entry
# ovs-ofctl snoop s1
OFPT_FLOW_MOD (OF1.3) (xid=0xf61fb58b): DEL in_port=1 out_port:2
actions=drop

I dump the flow entry, it still exit the flow entry.
# ovs-ofctl dump-flows -O OpenFlow13 s1






*OFPST_FLOW reply (OF1.3) (xid=0x2): cookie=0x0, duration=26.302s, table=0,
n_packets=46, n_bytes=2760,
priority=65535,dl_dst=01:80:c2:00:00:0e,dl_type=0x88cc
actions=CONTROLLER:65535 cookie=0x0, duration=16.068s, table=0,
n_packets=17, n_bytes=1610, priority=50,in_port=1,dl_dst=00:00:00:00:00:02
actions=output:2 cookie=0x0, duration=16.068s, table=0, n_packets=8,
n_bytes=672, priority=50,in_port=2,dl_dst=00:00:00:00:00:01
actions=output:1 cookie=0x0, duration=16.066s, table=0, n_packets=0,
n_bytes=0, priority=10,in_port=1,dl_dst=00:00:00:00:00:02
actions=output:3 cookie=0x0, duration=16.066s, table=0, n_packets=0,
n_bytes=0, priority=10,in_port=3,dl_dst=00:00:00:00:00:01
actions=output:1 cookie=0x0, duration=26.322s, table=0, n_packets=3,
n_bytes=172, priority=0 actions=CONTROLLER:65535*

I use the ovs-ofctl command to remove, it is okay








*# ovs-ofctl del-flows s1 "in_port=1 out_port:2" -O OpenFlow13# ovs-ofctl
dump-flows -O OpenFlow13 s1OFPST_FLOW reply (OF1.3) (xid=0x2): cookie=0x0,
duration=142.445s, table=0, n_packets=175, n_bytes=10500,
priority=65535,dl_dst=01:80:c2:00:00:0e,dl_type=0x88cc
actions=CONTROLLER:65535 cookie=0x0, duration=132.211s, table=0,
n_packets=8, n_bytes=672, priority=50,in_port=2,dl_dst=00:00:00:00:00:01
actions=output:1 cookie=0x0, duration=132.209s, table=0, n_packets=6,
n_bytes=588, priority=10,in_port=1,dl_dst=00:00:00:00:00:02
actions=output:3 cookie=0x0, duration=132.209s, table=0, n_packets=0,
n_bytes=0, priority=10,in_port=3,dl_dst=00:00:00:00:00:01
actions=output:1 cookie=0x0, duration=142.465s, table=0, n_packets=7,
n_bytes=340, priority=0 actions=CONTROLLER:65535*

Ask you see, the flow entry in_port=1 and out_port=2 is deleted. I would
like to know why we use controller RYU?

Thank your for your time.


On Tue, Aug 30, 2016 at 7:40 PM, Quân Nguyễn Thanh <[email protected]>
wrote:

> Hi,
>
> It doesn't work. When I use with OFPFC_DELETE option, it remove all flow
> entry.
> I also try remove by ovs-ofctl command on openvswitch.
>
> # ovs-ofctl del-flows s3 "priority=50" -O OpenFlow13
> ovs-ofctl: unknown keyword priority
>
> It means that openvswitch doesn't support, right?
>
> Thank you.
>
>
>
>
> On Tue, Aug 30, 2016 at 10:35 AM, IWAMOTO Toshihiro <[email protected]
> > wrote:
>
>> At Tue, 30 Aug 2016 11:49:27 +0900,
>> Iwase Yusuke wrote:
>> >
>> > Hi,
>> >
>> > Please CC [email protected] and keep this mailing this.
>> >
>> > How about specifying out_port=ofproto.OFPP_ANY and
>> out_group=ofproto.OFPG_ANY
>> > to OFPFlowMod message?
>> >    e.g.)
>> >      mod = parser.OFPFlowMod(datapath=datapath, cookie=0,
>> >                              priority=priority,
>> >                              out_port=ofproto.OFPP_ANY,
>> >                              out_group=ofproto.OFPG_ANY,
>> >                              command=ofproto.OFPFC_DELETE_STRICT)
>> >
>> > Thunks,
>> > Iwase
>>
>> Use OFPFC_DELETE instead of OFPFC_DELETE_STRICT?
>>
>> >
>> > On 2016年08月30日 09:44, Quân Nguyễn Thanh wrote:
>> > > Hi Iwase Yusuke,
>> > >
>> > > Sorry, if I borther you.
>> > > I'm using OF1.3 with RYU, I would like to remove flow entry basing on
>> the
>> > > priority at all. As below function, but it doesn't work, could you
>> please
>> > > point out my mistake?
>> > >
>> > >
>> > >
>> > >
>> > >
>> > >
>> > >
>> > >
>> > >
>> > > *def del_flow(self, datapath, priority):        ofproto =
>> > > datapath.ofproto        parser = datapath.ofproto_parser
>> #match =
>> > > {}        mod = parser.OFPFlowMod(            datapath=datapath,
>> cookie=0,
>> > > priority=priority,             command=ofproto.OFPFC_DELETE_STRICT)
>> > > datapath.send_msg(mod)*
>> > >
>> > > Thank you for your help.
>> > >
>> >
>> > ------------------------------------------------------------
>> ------------------
>> > _______________________________________________
>> > Ryu-devel mailing list
>> > [email protected]
>> > https://lists.sourceforge.net/lists/listinfo/ryu-devel
>>
>
>
>
> --
> Best regards,
> Quan Nguyen
>
>


-- 
Best regards,
Quan Nguyen
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