Hi Aaron
If you are using Open vSwitch, you should use ovs-ofctl instead of ovs-dpctl
to lookup your flow table.
Also, since nw_tos and nw_dst are valid only for IP flows, you should add:
flow[core.DL_TYPE] = 0x0800
to match only IP flows.
I think that if you don't do that OVS may just ignore nw_tos and nw_dst (I'm
too lazy to check that right now...).
--
Romain Lenglet
On Mon, Nov 22, 2010 at 5:59 AM, Aaron Rosen <aro...@clemson.edu> wrote:
> Hi Murphy,
>
> Ok, looking at the Match values in wireshark I do not see a packet that is
> applying my first self.install_datapath_flow(); but I do see it for the
> second one (Here is the snippet of code I'm running back to back).
>
>
> # IF NW_TOS = 0x10 and the NW_DST = (2.99) send the flow to the following
> DL_DST/NW_DEST and out the correct port
> flow = {}
> flow[core.NW_TOS] = 0x10
> flow[core.NW_DST] = ipstr_to_int("192.168.2.99")
> actions = [[openflow.OFPAT_SET_DL_DST, "00:22:fa:62:4a:de"],
> [openflow.OFPAT_SET_NW_DST, "192.168.1.4"], [openflow.OFPAT_OUTPUT, [0,
> self.PortMaping[dpid, "00:22:fa:62:4a:de"]]]]
> self.install_datapath_flow(dpid, flow, 15, 0, actions, bufid,
> openflow.OFP_DEFAULT_PRIORITY, inport, buf)
>
>
> ## This flow is used to send packets to the correct gateway address after a
> client moves to a new subnet. (<-- seeing this in wireshark )
>
> flow = {}
> flow[core.DL_DST] = mac_to_int('\x00\x1b\x21\x6a\x83\x0c') # Old Gw
> actions = [[openflow.OFPAT_SET_DL_DST, "00:60:97:db:dc:3c"],
> [openflow.OFPAT_OUTPUT, [0, 1]]] # new GW
> self.install_datapath_flow(dpid, flow, 999, 0, actions, bufid,
> openflow.OFP_DEFAULT_PRIORITY, inport, buf)
>
>
> I've attached my wireshark dump of the of packets. Perhaps you can tell
> what is going wrong? Sorry for all the trouble.
>
> Aaron
>
>
>
>
>
>
> On Sun, Nov 21, 2010 at 3:29 PM, Murphy McCauley <jam...@nau.edu> wrote:
>
>> Do you have the OpenFlow wireshark plugin? I'd suggest monitoring the
>> OpenFlow traffic from the controller to the switch and seeing if the match
>> data in the flow mod looked right.
>>
>> -- Murphy
>>
>> On Nov 21, 2010, at 11:12 AM, Aaron Rosen wrote:
>>
>> Hmm,
>>
>> It seems like if I'm having trouble getting this to match as well?
>>
>> flow[core.NW_DST] = ipstr_to_int("192.168.2.99")
>>
>> The flow entry still becomes
>>
>>
>> cookie=0, duration_sec=15s, duration_nsec=239000000s, table_id=1,
>> priority=32768, n_packets=15, n_bytes=1470,
>> idle_timeout=15,hard_timeout=0,dl_dst=00:22:fa:62:4a:de,actions=mod_nw_tos:0x10,mod_dl_dst:00
>> :1b:21:6a:83:0c,mod_nw_dst:192.168.2.99,IN_PORT
>>
>> Thanks,
>>
>> Aaron
>>
>> On Sun, Nov 21, 2010 at 1:26 PM, Aaron Rosen <aro...@clemson.edu> wrote:
>>
>>> Hello, I'm trying to match on core.NW_TOS but that doesn't seem to work.
>>> Below is the snippet of code that I'm trying:
>>>
>>> flow = {}
>>> flow[core.NW_TOS] = 0x10
>>> actions = [[openflow.OFPAT_SET_DL_DST, "00:22:fa:62:4a:de"],
>>> [openflow.OFPAT_SET_NW_DST, "192.168.1.4"],[openflow.OFPAT_OUTPUT, [0,
>>> self.PortMaping[dpid, "00:22:fa:62:4a:de"]]]]
>>> self.install_datapath_flow(dpid, flow, 15, 0, actions, bufid,
>>> openflow.OFP_DEFAULT_PRIORITY, inport, buf)
>>>
>>> When I check the flow it installed with dpctl I see the following:
>>>
>>> cookie=0, duration_sec=1767s, duration_nsec=148000000s, table_id=1,
>>> priority=32768, n_packets=30290, n_bytes=2179728,
>>> idle_timeout=15,hard_timeout=0,actions=mod_dl_dst:00:22:fa:62:4a:de,mod_nw_dst:192.168
>>> .1.4,output:2 (No ToS matching here ? )
>>>
>>>
>>> Am I doing something wrong?
>>>
>>> Thanks,
>>>
>>> Aaron
>>>
>>>
>>> --
>>> Aaron O. Rosen
>>> Masters Student - Network Communication
>>> 306B Fluor Daniel
>>> 843.425.9777
>>>
>>>
>>
>>
>> --
>> Aaron O. Rosen
>> Masters Student - Network Communication
>> 306B Fluor Daniel
>> 843.425.9777
>>
>> _______________________________________________
>> nox-dev mailing list
>> nox-dev@noxrepo.org
>> http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
>>
>>
>>
>
>
> --
> Aaron O. Rosen
> Masters Student - Network Communication
> 306B Fluor Daniel
> 843.425.9777
>
>
> _______________________________________________
> nox-dev mailing list
> nox-dev@noxrepo.org
> http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
>
>
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