[ovs-discuss] What is a l2 pkt microflow

[Ben Pfaff]

On November 20, 2017 11:44:09 PM PST, Sara Gittlin <sara.gittlin at gmail.com> wrote:
>Thank you Ben
>Is this L2 flow is an entry in one of the kernel megaflow tables ?
>otherwise if it an entry in the kernel microflow table - then there
>should be  multiple microflow tables,  because L2 flow keys consist
>only of L2 header, while  for other flow the keys are l2+l3 headers. i
>thought that there is only a single microflow table so  classification
>takes  O(1).
>--Sara
>
>
>On Mon, Nov 20, 2017 at 7:38 PM, Ben Pfaff <blp at ovn.org> wrote:
>> On Thu, Nov 16, 2017 at 07:46:05PM +0200, Sara Gittlin wrote:
>>> I understand that microflow kernel cache entries consist of full set
>of
>>> header keys.
>>> What about a l2 pkt e.g cfm pkt. What are the hash keys for cfm pkt
>in the
>>> single microflow table?
>>
>> Just the Ethernet header.

There is one microflow table. Like many hash tables, it has a variable length key.
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