On Fri, Mar 4, 2016 at 12:26 PM, Rajasekaran, Monica < monica.rajaseka...@us.fujitsu.com> wrote:
> Hi Andy, > > > > Thanks for that suggestion. I will try that out. I am pretty new to this > so finding it hard. > > > > I have OVS-ODL integrated and up and also added flows. At what point > should I run “gdb backtrace” ? Attached an image of what I get when I run > the same. > It seems the gdb is not attached to any process. If you are not familiar with gdb, this approach may not work out. > > > Thanks. > > > > *From:* Andy Zhou [mailto:az...@ovn.org] > *Sent:* Friday, March 04, 2016 1:36 PM > *To:* André Mantas > *Cc:* Rajasekaran, Monica; discuss@openvswitch.org > > *Subject:* Re: [ovs-discuss] Open vSwitch Source code walkthrough > > > > Monica, you may want to trace through the code using gdb. GDB backtrace > tells you where you came from and you can step forward through execution. > > You can alway attach gdb to a running process. If using sandbox, you can > start vswitchd under gdb by using the '-g' option, as: > > > > $ make sandbox SANDBOXFLAGS=-g > > > > > > On Fri, Mar 4, 2016 at 11:27 AM, André Mantas <andremant...@gmail.com> > wrote: > > I'm no ovs expert but handle_openflow(struct ofconn *ofconn, const struct > ofpbuf *ofp_msg) looks like a good place to start. > > You can always search for function names to see where they're invoked. > > > > Rajasekaran, Monica <monica.rajaseka...@us.fujitsu.com> escreveu no dia > sexta, 4/03/2016 às 19:08: > > I am looking at the code but I don’t know what gets invoked first. > Functions from header files and vswitchd and ovsdb modules have been called > in between. Should I just add print statements to all the functions in > ofproto.c and see how it goes when a packet comes in ? Or is there an > alternative ? > > > > Thanks, > > Monica > > > > *From:* André Mantas [mailto:andremant...@gmail.com] > *Sent:* Friday, March 04, 2016 11:33 AM > *To:* Rajasekaran, Monica; discuss@openvswitch.org > *Subject:* Re: [ovs-discuss] Open vSwitch Source code walkthrough > > > > Have you tried ofproto/ofproto.c? > > > > Rajasekaran, Monica <monica.rajaseka...@us.fujitsu.com> escreveu no dia > sexta, 4/03/2016 às 17:23: > > Well, I can see how things work when we give commands using ofctl, vsctl > etc. But, I still don’t get which file is invoked first when * a packet > arrives to the switch.* > > > > Any help on this ? > > > > *From:* Rajasekaran, Monica > *Sent:* Wednesday, March 02, 2016 2:32 PM > *To:* 'discuss@openvswitch.org' > *Subject:* Open vSwitch Source code walkthrough > > > > Hello, > > > > I am trying to understand the source code of Open vSwitch for one of my > projects. But, not sure from where I should start and where to end. Is it > possible to give me some sort of guidance ? > > > > *Thanks and Regards,* > > *Monica Rajasekaran* > > _______________________________________________ > discuss mailing list > discuss@openvswitch.org > http://openvswitch.org/mailman/listinfo/discuss > > > _______________________________________________ > discuss mailing list > discuss@openvswitch.org > http://openvswitch.org/mailman/listinfo/discuss > > >
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