On 08/26/14 at 03:23pm, Junguk Cho wrote:
> What I thought is to generally use metadata as matching rule in datapath.
> It is not just between tables.
You may be looking for the 'mark' field of the flow. It is known in
the datapath and used across different Linux kernel subsystems.
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What I thought is to generally use metadata as matching rule in datapath.
It is not just between tables.
Thanks,
Junguk
2014-08-26 15:15 GMT-06:00 Ben Pfaff :
> On Tue, Aug 26, 2014 at 03:14:10PM -0600, Junguk Cho wrote:
> > But, it is in "struct flow" in lib/flow.h.
> > It is not from "stru
On Tue, Aug 26, 2014 at 03:14:10PM -0600, Junguk Cho wrote:
> But, it is in "struct flow" in lib/flow.h.
> It is not from "struct sw_flow_key" in /datapath/flow.h.
>
> I assume metadata is used in action in datapath.
metadata is not a datapath concept. There is no need for it to be a
datapath co
But, it is in "struct flow" in lib/flow.h.
It is not from "struct sw_flow_key" in /datapath/flow.h.
I assume metadata is used in action in datapath.
Is it right?
Thanks,
Junguk
2014-08-26 14:00 GMT-06:00 Ben Pfaff :
> On Tue, Aug 26, 2014 at 01:57:32PM -0600, Junguk Cho wrote:
> > One more qu
On Tue, Aug 26, 2014 at 01:57:32PM -0600, Junguk Cho wrote:
> One more question, if we used metadata, is metadata stored in "tun_in" in
> "struct ovs_key_ipv4_tunnel"?
No.
> Which data structure keeps metadata information?
struct flow's "metadata" member.
Ok. I got it. Maybe I misunderstood the concept of metadata.
Metadata is passed between tables. It is not from packets.
One more question, if we used metadata, is metadata stored in "tun_in" in
"struct ovs_key_ipv4_tunnel"?
Which data structure keeps metadata information?
Thanks,
Junguk
2014-08
Metadata is always 0 at the point that a packet enters the OpenFlow
pipeline, so there's no need for the datapath to match on it--it would
always be a match against 0.
On Tue, Aug 26, 2014 at 01:44:56PM -0600, Junguk Cho wrote:
> Oh, really?
>
> Basically, what I understood is datapath keeps some
Oh, really?
Basically, what I understood is datapath keeps some tables based on "struct
sw_flow_key" and used it for evaluating if incoming packet is matched or
not.
Is it right or do I miss something?
If I miss something, can you forward me to metadata matching in datapath?
Thanks,
Junguk
2
On Tue, Aug 26, 2014 at 01:36:04PM -0600, Junguk Cho wrote:
> Hi, I have a simple question.
> When we use metadata as flow-rule,
> Does all traffic forward ofproto to match it because there is no match
> field in "struct sw_flow" in datapath?
No, metadata matching still allows for kernel forwardin
Hi, I have a simple question.
When we use metadata as flow-rule,
Does all traffic forward ofproto to match it because there is no match
field in "struct sw_flow" in datapath?
Thanks,
Junguk
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