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 <[email protected]> wrote: > On Mon, Aug 10, 2015 at 11:55 AM, Dave Waters <[email protected]> > 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. >
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