On Tue, Jan 30, 2024 at 10:51:46AM +0800, Steven Zou wrote: > New E810 firmware supports the corresponding functionality, so the driver > allows PFs to subscribe the same switch recipes. Then when the PF is done > with a switch recipes, the PF can ask firmware to free that switch recipe. > > When users configure a rule to PFn into E810 switch component, if there is > no existing recipe matching this rule's pattern, the driver will request > firmware to allocate and return a new recipe resource for the rule by > calling ice_add_sw_recipe() and ice_alloc_recipe(). If there is an existing > recipe matching this rule's pattern with different key value, or this is a > same second rule to PFm into switch component, the driver checks out this > recipe by calling ice_find_recp(), the driver will tell firmware to share > using this same recipe resource by calling ice_subscribable_recp_shared() > and ice_subscribe_recipe(). > > When firmware detects that all subscribing PFs have freed the switch > recipe, firmware will free the switch recipe so that it can be reused. > > This feature also fixes a problem where all switch recipes would eventually > be exhausted because switch recipes could not be freed, as freeing a shared > recipe could potentially break other PFs that were using it. > > Reviewed-by: Przemek Kitszel <przemyslaw.kits...@intel.com> > Reviewed-by: Andrii Staikov <andrii.stai...@intel.com> > Signed-off-by: Steven Zou <steven....@intel.com>
Reviewed-by: Simon Horman <ho...@kernel.org>
