Messages in this thread | | | Subject | Re: [PATCH RFC bpf-next v6 2/6] bpf: Add support for KF_ARG_PTR_TO_TIMER | From | Eduard Zingerman <> | Date | Tue, 09 Apr 2024 00:55:52 +0300 |
| |
On Mon, 2024-04-08 at 10:09 +0200, bentiss@kernel.org wrote: > From: Kumar Kartikeya Dwivedi <memxor@gmail.com> > > 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@gmail.com> > Signed-off-by: Benjamin Tissoires <bentiss@kernel.org> > > ---
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
| |