On Fri, 15 May 2020 14:40:10 +0300 Vlad Buslov wrote: > Output rate of current upstream kernel TC filter dump implementation if > relatively low (~100k rules/sec depending on configuration). This > constraint impacts performance of software switch implementation that > rely on TC for their datapath implementation and periodically call TC > filter dump to update rules stats. Moreover, TC filter dump output a lot > of static data that don't change during the filter lifecycle (filter > key, specific action details, etc.) which constitutes significant > portion of payload on resulting netlink packets and increases amount of > syscalls necessary to dump all filters on particular Qdisc. In order to > significantly improve filter dump rate this patch sets implement new > mode of TC filter dump operation named "terse dump" mode. In this mode > only parameters necessary to identify the filter (handle, action cookie, > etc.) and data that can change during filter lifecycle (filter flags, > action stats, etc.) are preserved in dump output while everything else > is omitted.
Please keep the review tags you already got when making minor changes. Reviewed-by: Jakub Kicinski <k...@kernel.org>
