[ovs-discuss] Does flows modifying arp field or using registers could only be used in slow path ?

kai xi fan kaixi.f at gmail.com
Tue Nov 19 06:55:29 UTC 2019


why does ovs not generate fast path flows for flows modifying arp field ? I
have seen a mega flow in the ovs trace result.
Final flow: unchanged
Megaflow:
recirc_id=0,eth,arp,in_port=1,vlan_tci=0x0000/0x1fff,dl_src=5e:89:3e:52:ef:8c,dl_dst=00:00:00:00:00:00
Datapath actions: 1,3

Ben Pfaff <blp at ovn.org> 于2019年11月19日周二 上午2:16写道:

> On Sun, Nov 17, 2019 at 07:09:25PM +0800, kai xi fan wrote:
> > Baesd on the tutorial of openvwitch,  it said that flows modifying arp
> > field will not generate fast path flows. Is it true ?
>
> Yes.
>
> > Is it the same flows for using registers?
>
> No.
>
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