Hi,
Following are my thoughts on how we can do egress shaping and dscp
marking in OVN from what I understood from this
<http://openvswitch.org/pipermail/dev/2016-May/070599.html> mail thread;
- Client sets the rate, burst and dscp parameters in 'options' field on
the NB Logical_Port table.
- ovn-northd does the following
- Figures out a free queue number and sets it in the 'options'
field of SB Port_Binding table
- Copies the rate and burst parameters from NB Logical_Port table.
- Sets new actions 'set_queue(queue_number)' and
'mark_dscp(dscp_value)' in Logical_Flow that corresponds to the
'inport' in the ls_in_port_sec_l2 stage.
- ovn-controller does the following
- Opens the netdev that has the 'ovn-encap-ip' address. Does
'ovn-encap-ip' always belong to a physical device? Is there a better way
in finding a physical interface?
- Checks and creates qdisc of type linux-htb/linux-hfsc
- Checks and creates queues for all the logical ports and sets
rate, burst parameters
- Implements the necessary openflow actions for 'set_queue' and
'mark_dscp' logical actions
Thank you,
Babu
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