linux-kernel - Re: [PATCH v3 0/4] bpf: Add user-space-publisher ringbuffer map type

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Date:   Wed, 24 Aug 2022 19:38:34 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     David Vernet <void@...ifault.com>, bpf@...r.kernel.org,
        ast@...nel.org, andrii@...nel.org
Cc:     kernel-team@...com, martin.lau@...ux.dev, song@...nel.org,
        yhs@...com, john.fastabend@...il.com, kpsingh@...nel.org,
        sdf@...gle.com, haoluo@...gle.com, jolsa@...nel.org,
        joannelkoong@...il.com, tj@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 0/4] bpf: Add user-space-publisher ringbuffer map type

Hey David,

On 8/19/22 12:12 AM, David Vernet wrote:
> This patch set defines a new map type, BPF_MAP_TYPE_USER_RINGBUF, which
> provides single-user-space-producer / single-kernel-consumer semantics over
> a ringbuffer.  Along with the new map type, a helper function called
> bpf_user_ringbuf_drain() is added which allows a BPF program to specify a
> callback with the following signature, to which samples are posted by the
> helper:

Looks like this series fail BPF CI, ptal:

https://github.com/kernel-patches/bpf/runs/7996821883?check_suite_focus=true

   [...]
   bpftool_checks - Running bpftool checks...
   Comparing /tmp/work/bpf/bpf/tools/include/uapi/linux/bpf.h (bpf_map_type) and /tmp/work/bpf/bpf/tools/bpf/bpftool/map.c (do_help() TYPE): {'user_ringbuf'}
   Comparing /tmp/work/bpf/bpf/tools/include/uapi/linux/bpf.h (bpf_map_type) and /tmp/work/bpf/bpf/tools/bpf/bpftool/Documentation/bpftool-map.rst (TYPE): {'user_ringbuf'}
   bpftool checks returned 1.
   [...]