On Thu, Aug 11, 2022 at 04:22:43PM -0700, Andrii Nakryiko wrote: > On Mon, Aug 8, 2022 at 8:54 AM David Vernet <void@xxxxxxxxxxxxx> wrote: > > > > Now that we have a BPF_MAP_TYPE_USER_RINGBUF map type, we need to add a > > helper function that allows BPF programs to drain samples from the ring > > buffer, and invoke a callback for each. This patch adds a new > > bpf_user_ringbuf_drain() helper that provides this abstraction. > > > > In order to support this, we needed to also add a new PTR_TO_DYNPTR > > register type to reflect a dynptr that was allocated by a helper function > > and passed to a BPF program. The verifier currently only supports > > PTR_TO_DYNPTR registers that are also DYNPTR_TYPE_LOCAL and MEM_ALLOC. > > This commit message is a bit too laconic. There is a lot of > implications of various parts of this patch, it would be great to > highlight most important ones. Please consider elaborating a bit more. Not a problem, I'll do this in v3.
