Hi All,
We are exploring the possibility of doing some Flow_Table settings (like
classifier optimizations) through OVN.
One possible option could be to expose this in ovn-nb config and propagate it
to ovn-sb.
- Add new table with name “Flow_Config” which stores settings (similar to
Flow_Table in vwitchd.conf.db)
- Add new columns “flow_table_in_settings” and “flow_table_out_settings” in
NB_Global and SB_Global tables.
The type of these columns is map of <int>:<Flow_Config_entry> where key is
logical pipeline stage number and
value points to a row entry in Flow_Config table.
OVN controller uses this information and configures vwitchd.config.db.
- Flow_Table rows in vswitchd.conf.db are populated using Flow_Config table
in southbound.
- Bridge table's flow_tables column is populated using keys (logical table
numbers) in flow_table_in_settings and
flow_table_out_settings columns of SB_Global table . During configuration,
OVN controller adds offset
OFTABLE_LOG_INGRESS_PIPELINE for ingress tables and
OFTABLE_LOG_EGRESS_PIPELINE for egress pipelines.
Probably a new command can be added to northd to dump the logical switch and
logical router
ingress and egress pipeline stage table names and numbers for reference.
Please share your thoughts/inputs on this.
Thanks,
Naveen
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