One approach is to use tcpdump, etc. to capture to a pcap file. But I usually write the examples in ofp-print.at by hand, while reading the OpenFlow specs, to assure myself that the formats that the decoders understand are really correct. That's another part of the purpose of the tests there, to ensure that if the encoder or decoder functions in OVS drift away from the OpenFlow spec, the ofp-print tests will catch the regressions since their contents are fixed points.
On Sat, Feb 27, 2016 at 01:43:05PM +0000, André Mantas wrote: > This may be a beginner question but is there a quick way to get a hexdump > of an OpenFlow message? > > Thanks for your help. > > Ben Pfaff <b...@ovn.org> escreveu no dia sexta, 26/02/2016 às 22:52: > > > Tests like the ones in ofproto.at, which test functionality, are more > > important than the ones in ofp-print.at, which test message decoding and > > printing, but it's best to have both. > > > > On Fri, Feb 26, 2016 at 09:57:48PM +0000, André Mantas wrote: > > > Ok, makes sense. So I should focus on making similar tests to the ones in > > > ofproto.at? Or these are also important? > > > > > > Thanks. > > > > > > Ben Pfaff <b...@ovn.org> escreveu no dia sexta, 26/02/2016 às 20:35: > > > > > > > On Fri, Feb 26, 2016 at 08:07:32PM +0000, André Mantas wrote: > > > > > I've seen some examples in ofp-print.at, ofproto.at and was trying > > to > > > > > figure them out so I could add more. > > > > > > > > > > (ofp-print.at) > > > > > AT_SETUP([OFPT_BUNDLE_ADD_MESSAGE - PORT_MOD]) > > > > > AT_KEYWORDS([ofp-print]) > > > > > AT_CHECK([ovs-ofctl ofp-print "\ > > > > > 05 22 00 38 00 00 00 03 00 00 00 01 00 00 00 01 \ > > > > > 05 10 00 28 00 00 00 03 00 00 00 03 00 00 00 00 \ > > > > > 50 54 00 00 00 01 00 00 00 00 00 01 00 00 00 01 \ > > > > > 00 00 00 08 00 00 00 01 > > > > > "], [0], [dnl > > > > > OFPT_BUNDLE_ADD_MESSAGE (OF1.4) (xid=0x3): > > > > > bundle_id=0x1 flags=atomic > > > > > OFPT_PORT_MOD (OF1.4) (xid=0x3): port: 3: addr:50:54:00:00:00:01 > > > > > config: PORT_DOWN > > > > > mask: PORT_DOWN > > > > > advertise: 10MB-HD > > > > > ]) > > > > > > > > > > From ofproto.at I can see that: > > > > > > > > > > 05 - OpenFlow14 message > > > > > 22 - OFPT_BUNDLE_ADD_MESSAGE (?) > > > > > > > > > > I also tried to search for ovs-ofctl ofp-print syntax or help but > > > > couldn't > > > > > find it. > > > > > > > > > > Any help? > > > > > > > > ofp-print takes a hexdump of an OpenFlow message and prints it on > > stdout > > > > with ofp_print() from lib/ofp-print.c. It's there to test decoding and > > > > printing OpenFlow messages. > > > > > > > > It's not documented because it's meant for internal testing, not as an > > > > end user interface. > > > > > > _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
