[ovs-discuss] Deep Packet Inspection possible?

[Dave Waters]

I took a look at P4 and i thought it was primarily for HW devices. Let me
see how i can use that with OVS.

Can you give me the function in the code that i could start looking at if i
want to make custom changes to deep inspect the packet in OVS. Some
starting point would help.

Dave

On Wed, Aug 12, 2015 at 5:02 AM, Jesse Gross <jesse at nicira.com> wrote:

> On Mon, Aug 10, 2015 at 11:55 AM, Dave Waters <davewaters1970 at gmail.com>
> wrote:
> > Hi,
> >
> > Can i use OVS to deep inspect beyond the L4 headers inside the packet.
> If i
> > know the exact encapsulations then can i for example look at say, the 1st
> > bit in the 110th byte of the incoming packet?
> >
> > When i say i know the exact encapsulation, i mean that i know that its an
> > untagged plain IPv4 UDP/TCP packet.
>
> No, OVS doesn't have an ability to grab arbitrary byte offsets into the
> packet.
>
> In general, I think there are too many corner cases for this to be the
> right solution for OVS to expose for most people. I would rather see
> an implementation of a flexible parser like P4 as the way to achieve
> this.
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://openvswitch.org/pipermail/ovs-discuss/attachments/20150815/ba7dee9c/attachment-0002.html>