lkml.org 
[lkml]   [2019]   [Dec]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH bpf-next 0/2] bpftool/libbpf: Add probe for large INSN limit
On Fri, Dec 27, 2019 at 11:53:44AM +0100, mrostecki@opensuse.org wrote:
> From: Michal Rostecki <mrostecki@opensuse.org>
>
> This series implements a new BPF feature probe which checks for the
> commit c04c0d2b968a ("bpf: increase complexity limit and maximum program
> size"), which increases the maximum program size to 1M. It's based on
> the similar check in Cilium, althogh Cilium is already aiming to use
> bpftool checks and eventually drop all its custom checks.
>
> Examples of outputs:
>
> # bpftool feature probe
> [...]
> Scanning miscellaneous eBPF features...
> Large complexity limit and maximum program size (1M) is available
>
> # bpftool feature probe macros
> [...]
> /*** eBPF misc features ***/
> #define HAVE_HAVE_LARGE_INSN_LIMIT
>
> # bpftool feature probe -j | jq '.["misc"]'
> {
> "have_large_insn_limit": true
> }
>
> Michal Rostecki (2):
> libbpf: Add probe for large INSN limit
> bpftool: Add misc secion and probe for large INSN limit
>
> tools/bpf/bpftool/feature.c | 18 ++++++++++++++++++
> tools/lib/bpf/libbpf.h | 1 +
> tools/lib/bpf/libbpf.map | 1 +
> tools/lib/bpf/libbpf_probes.c | 23 +++++++++++++++++++++++
> 4 files changed, 43 insertions(+)
>
> --
> 2.16.4
>

Sorry for sending this twice! I didn't see the thread immediately after
sending the first time, so I though there is some problem with my
@opensuse.org alias or SMTP server not accepting it. Please review this
series, since I'm using @opensuse.org alias for upstream development
more frequently than @suse.de.

\
 
 \ /
  Last update: 2019-12-27 19:20    [W:0.026 / U:4.776 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site