Hi Murphy Thank you for reply. I understood your point. The actual work of rewriting the packet header happens on the switch. (I'm sorry, I omit carbon copy.)
And I want to modify packet in switch before checking flow table. Is it possible in openflow switch? Original openflow process : Receive packet -> Check flow table(Find highest-priority matching flow entry) -> Apply instructions(Modify packet etc) I want to do this : Receive packet -> *Modify packet in each OF switch* -> Check flow table(Find highest-priority matching flow entry) -> Apply instructions(Modify packet etc) So I search receiving callback in OF switch. I think it maybe relate with hw_drv.c (openflow\hw-lib\skeleton\hw_drv.c) ? But I don't know exactly. Could you give some advice or where is the packet receiving callback? Thank you for your favor. Best Regards - Hyogi 2011/11/29 Murphy McCauley <jam...@nau.edu> > This depends on exactly what you mean, though I wonder if you are > operating under a misconception. > > If you use NOX to install a flow with, for example, an OFPAT_SET_DL_DST > action to set the ethernet address... the actual work of rewriting the > packet header happens on the switch. It's only the instruction to do so > that comes from the controller. > > Hope that helps. > > -- Murphy > > On Nov 28, 2011, at 7:12 AM, Hyogi Jung wrote: > > I want to modify the packet's header in *Openflow Switch(Router) not NOX > controller*. > > Do you know where event handler is called? > > I try to search google and mailinglist, but I coundn't search. There is no > information. > > Could you give some advice or reference site? > > > _______________________________________________ > nox-dev mailing list > nox-dev@noxrepo.org > http://noxrepo.org/mailman/listinfo/nox-dev > > > -- Hyogi Jung, MS Student Multimedia & Mobile Communications Lab School of Computer Science and Engineering Seoul National University, Korea Tel: +82-2-880-9147
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