[ovs-discuss] TCP and UDP mask support in OVS

Ben Pfaff blp at ovn.org
Mon Jul 25 14:50:19 UTC 2016


Hmm, there's no change in this area since 2.4.  Can you give an example
of an OpenFlow message that provokes the error?  A hexdump or pcap of
the message would be ideal.

On Mon, Jul 25, 2016 at 12:19:43PM +0530, Aswin S wrote:
> Hi Ben
> 
> The below extension were used.
> 
> #define NXM_OF_TCP_SRC    NXM_HEADER  (0x0000,  9, 2)
> #define NXM_OF_TCP_DST    NXM_HEADER  (0x0000, 10, 2)
> #define NXM_OF_UDP_SRC    NXM_HEADER  (0x0000, 11, 2)
> #define NXM_OF_UDP_DST    NXM_HEADER  (0x0000, 12, 2)
> 
> It was working in OVS 2.4(not the latest). But now it seems to be throwing
> an error BAD_LENGTH with latest 2.4 and 2.5
> 
> Thanks
> Aswin
> 
> On Sun, Jul 24, 2016 at 11:30 PM, Ben Pfaff <blp at ovn.org> wrote:
> 
> > On Sun, Jul 24, 2016 at 11:28:27AM +0530, Aswin S wrote:
> > > In opendaylight we used Nicira Extention to support TCP and UDP mask. But
> > > now I observe that in ovs it is a part of standard openflow
> > implementation
> > > and the nicira extension code we used is reporting error. Was there a
> > > change in ovs? But openflow plugin spec is yet to support TCP/UDP mask.
> >
> > I don't know of a backward-incompatible change to OVS in this area.
> > What Nicira extension were you using?  What version of OVS worked, and
> > what version of OVS does not?
> >



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