On Mon, 2024-04-08 at 10:09 +0200, bentiss@xxxxxxxxxx wrote: > From: Kumar Kartikeya Dwivedi <memxor@xxxxxxxxx> > > Introduce support for KF_ARG_PTR_TO_TIMER. The kfuncs will use bpf_timer > as argument and that will be recognized as timer argument by verifier. > bpf_timer_kern casting can happen inside kfunc, but using bpf_timer in > argument makes life easier for users who work with non-kern type in BPF > progs. > > Fix up process_timer_func's meta argument usage (ignore if NULL) so that > we can share the same checks for helpers and kfuncs. meta argument is > only needed to ensure bpf_timer_init's timer and map arguments are > coming from the same map (map_uid logic is necessary for correct > inner-map handling). > > No such concerns will be necessary for kfuncs as timer initialization > happens using helpers, hence pass NULL to process_timer_func from kfunc > argument handling code to ignore it. > > Signed-off-by: Kumar Kartikeya Dwivedi <memxor@xxxxxxxxx> > Signed-off-by: Benjamin Tissoires <bentiss@xxxxxxxxxx> > > --- Acked-by: Eduard Zingerman <eddyz87@xxxxxxxxx>
