netdev - Re: [PATCH 06/11] bpf: Do not pass enum bpf_access_type to btf_struct

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Date:   Fri, 19 Jun 2020 15:23:30 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Andrii Nakryiko <andrii.nakryiko@...il.com>
Cc:     Jiri Olsa <jolsa@...nel.org>, Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Networking <netdev@...r.kernel.org>, bpf <bpf@...r.kernel.org>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        Martin KaFai Lau <kafai@...com>,
        David Miller <davem@...hat.com>,
        John Fastabend <john.fastabend@...il.com>,
        Wenbo Zhang <ethercflow@...il.com>,
        KP Singh <kpsingh@...omium.org>,
        Andrii Nakryiko <andriin@...com>,
        Brendan Gregg <bgregg@...flix.com>,
        Florent Revest <revest@...omium.org>,
        Al Viro <viro@...iv.linux.org.uk>
Subject: Re: [PATCH 06/11] bpf: Do not pass enum bpf_access_type to
 btf_struct_access

On Thu, Jun 18, 2020 at 08:58:06PM -0700, Andrii Nakryiko wrote:
> On Tue, Jun 16, 2020 at 3:06 AM Jiri Olsa <jolsa@...nel.org> wrote:
> >
> > There's no need for it.
> >
> > Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> > ---
> 
> It matches bpf_verifier_ops->btf_struct_access, though, which, I
> think, actually allows write access for some special cases. So I think
> we should keep it.

ok, will keep it

jirka

> 
> >  include/linux/bpf.h   | 1 -
> >  kernel/bpf/btf.c      | 3 +--
> >  kernel/bpf/verifier.c | 2 +-
> >  net/ipv4/bpf_tcp_ca.c | 2 +-
> >  4 files changed, 3 insertions(+), 5 deletions(-)
> >
> 
> [...]
>