Hi. Right now OVS tells a controller that 256 tables available as SWITCH_FEATURES response. (i.e. ofp_switch_features->n_tables = 256 = N_TABLES) But the table whose id is TBL_INTERNAL = N_TABLES - 1 is used for ovs internal use so can't be available to a controller.
Addition to the above, the document, DESIGN, says that > Tables 128 and above are reserved for use by the switch itself. > Controllers should use only tables 0 through 127. So what should be returned as n_tables? - 256 (current value) With OF1.0, there is no way to know that table id 255 is unusable. With OF1.1+, allowed operations can be described. So a controller can know that which tables are actually usable. - 255 This reflects the reality, but contradicts to the document, DESIGN. - 128 Actually 255 tables are usable. thanks, --- yamahata _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
