On Fri, Jan 29, 2021 at 6:14 AM Jamal Hadi Salim <jhs@xxxxxxxxxxxx> wrote: > > On 2021-01-29 9:06 a.m., Jamal Hadi Salim wrote: > > > Which leads to: > > Why not extend the general feature so one can register for optional > > callbacks not just for expire but also add/del/update on specific > > entries or table? > > add/del/update could be sourced from other kernel programs or user space > > and the callback would be invoked before an entry is added/deleted etc. > > (just like it is here for expiry). > > Sorry - shouldve read the rest of the thread: > Agree with Cong that you want per-map but there are use cases where you > want it per entry (eg the add/del/update case). That was my point as well. bpf_timer api should be generic, so that users can do both. The program could use bpf_timer one for each flow and bpf_timer for each map. And timers without maps.
