Alexei Starovoitov <alexei.starovoi...@gmail.com> writes: > On Fri, Jul 26, 2019 at 9:06 AM Toke Høiland-Jørgensen <t...@redhat.com> > wrote: >> >> This series adds a new map type, devmap_hash, that works like the existing >> devmap type, but using a hash-based indexing scheme. This is useful for the >> use >> case where a devmap is indexed by ifindex (for instance for use with the >> routing >> table lookup helper). For this use case, the regular devmap needs to be sized >> after the maximum ifindex number, not the number of devices in it. A >> hash-based >> indexing scheme makes it possible to size the map after the number of >> devices it >> should contain instead. >> >> This was previously part of my patch series that also turned the regular >> bpf_redirect() helper into a map-based one; for this series I just pulled out >> the patches that introduced the new map type. >> >> Changelog: >> >> v5: >> >> - Dynamically set the number of hash buckets by rounding up max_entries to >> the >> nearest power of two (mirroring the regular hashmap), as suggested by >> Jesper. > > fyi I'm waiting for Jesper to review this new version.
Ping Jesper? :) -Toke
