On 9/11/13 6:32 PM, Ben Pfaff wrote:
On Wed, Sep 11, 2013 at 03:51:51PM +0200, Torbjorn Tornkvist wrote:
I'm implementing the OF 1.2 protocol and was trying to set an
ipv4-src address in an action.
It seems however that OVS (1.11) dosn't talk proper OF 1.2.
OpenFlow 1.1 and later support is experimental. Thanks for trying it
out and reporting a problem.
Have a look at two wireshark sessions at:
http://picpaste.com/pics/of-1.2-CqqrPKPw.1378906446.png
That picture is almost unreadably fuzzy because it is an 1852 x 1113
image scaled down to 640 x 384. If you post screenshots, please make
sure them readable.
But if you click on the picture it should expand in your browser.
It does so in Chrome on both Ubuntu and Mac and I'm even able to
get a clear picture in my mobile phone.
The left window is me talking 1.2 and the right window is the result
of this command:
ovs-ofctl --protocol=OpenFlow12 add-flow 'tcp:192.168.1.120:6633
lsw' 'in_port=1,dl_src=86:d7:3c:a1:bb:d5,dl_type=0x8000
actions=mod_nw_src:192.168.111.111'
"lsw"?
The name of my bridge (Learning SWitch).
Look at the Action Type!
I'm looking at it. It looks like a bunch of fuzz. It *might* say 00 10
on the left and 00 05 on the right. Oh, I guess that "set-field" is 25
so that must be 00 19 on the left.
Is it a bug? Is it intentional? or what?
OpenFlow 1.1 uses action 5 to mean OFPAT_SET_NW_SRC.
OpenFlow 1.2 action numbering is backward-compatible with OpenFlow 1.1,
so presumably it means that same thing in OpenFlow 1.2.
Not sure about that.
Enclosed in the set-field is a "single OXM TLV", where:
OFPXMT_OFB_IPV4_SRC = 11
I guess the point you're trying to make is that OVS should translate
mod_nw_src into set_field for OF1.2? That's reasonable; I'll make a
note.
Btw: when I send the proper 1.2 message, I get the following in the
daemon.log:
ovs-vswitchd: ovs|11535|meta_flow|WARN|destination field ip_src
lacks correct prerequisites
Based on the command you provided above, this is probably because you
think that 0x8000 is the ethernet type for IPv4. It's not.
Ugh...what a typo, should of course be 0x0800.
Cheers, Tobbe
Any ideas on how to perform some interop. testing of the various OF
proto versions?
I don't know a good way, but this is already some useful feedback.
Thanks.
_______________________________________________
discuss mailing list
[email protected]
http://openvswitch.org/mailman/listinfo/discuss
