On Thu, Mar 21, 2013 at 09:07:08AM +0200, Liran Schour wrote:
>
> I try to pass metadata to the controller through the following flow:
> ovs-ofctl add-flow br-int "in_port=5 priority=2 actions=set_field:123->
> metadata,controller(reason=no_match)"
>
> I do see the following flow when I do dump-flows:
> cookie=0x0, duration=310.921s, table=0, n_packets=0, n_bytes=0,
> idle_age=310, priority=2,in_port=5 actions=load:0x7b->OXM_OF_METADATA
> [],controller(reason=no_match)
>
> But when I check in the controller side I see metadata=0.
> I check the metadata value with 2 different methods:
> 1. By snooping the communication between switch to controller and see
> metadata=0.
> 2. By using the extract_flow function inside the controller to retrieve
> the flow
> corresponding to the packet_in message.
>
> What am I doing wrong here?
I don't know.
I set up a test of my own with Open vSwitch from current "master". I
added a single flow to the switch, with:
ovs-ofctl add-flow br0
'actions=load:123->OXM_OF_METADATA[],controller,normal'
Then I set up a simple "controller" to watch for packet-ins:
ovs-ofctl monitor -P nxm br0 128
When I run packets through the switch, I see the metadata fields set
as I would expect in the packet-ins, e.g.
NXT_PACKET_IN (xid=0x0): total_len=42 in_port=1 metadata=0x7b (via action)
data_len=42 (unbuffered)
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