netdev - Re: [net v5 0/3] fix bpf_redirect to ifb netdev

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Date:   Wed, 8 Dec 2021 23:53:23 +0800
From:   Tonghao Zhang <xiangxia.m.yue@...il.com>
To:     Alexander Lobakin <alexandr.lobakin@...el.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Antoine Tenart <atenart@...nel.org>,
        Wei Wang <weiwan@...gle.com>, Arnd Bergmann <arnd@...db.de>,
        Linux Kernel Network Developers <netdev@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [net v5 0/3] fix bpf_redirect to ifb netdev

On Wed, Dec 8, 2021 at 11:42 PM Alexander Lobakin
<alexandr.lobakin@...el.com> wrote:
>
> From: Tonghao Zhang <xiangxia.m.yue@...il.com>
> Date: Wed,  8 Dec 2021 22:54:56 +0800
>
> > From: Tonghao Zhang <xiangxia.m.yue@...il.com>
> >
> > This patchset try to fix bpf_redirect to ifb netdev.
> > Prevent packets loopback and perfromance drop, add check
> > in sch egress.
>
> Please provide a changelog in the cover letter. With the links to
> your previous versions ideally.
> Otherwise it becomes difficult to understand what are the changes
> between them.
Hi Alexander
This version of patchset, 2/3 only updates the commit message. because the
example in the commit message is not a usual case.
There are no  comments, so I sent them again.
I will provide a changelog in the next version or resend this version
again.  Thanks.

> >
> > Tonghao Zhang (3):
> >   net: core: set skb useful vars in __bpf_tx_skb
> >   net: sched: add check tc_skip_classify in sch egress
> >   selftests: bpf: add bpf_redirect to ifb
> >
> >  net/core/dev.c                                |  3 +
> >  net/core/filter.c                             | 12 ++-
> >  tools/testing/selftests/bpf/Makefile          |  1 +
> >  .../bpf/progs/test_bpf_redirect_ifb.c         | 13 ++++
> >  .../selftests/bpf/test_bpf_redirect_ifb.sh    | 73 +++++++++++++++++++
> >  5 files changed, 101 insertions(+), 1 deletion(-)
> >  create mode 100644 tools/testing/selftests/bpf/progs/test_bpf_redirect_ifb.c
> >  create mode 100755 tools/testing/selftests/bpf/test_bpf_redirect_ifb.sh
> >
> > --
> > Cc: "David S. Miller" <davem@...emloft.net>
> > Cc: Jakub Kicinski <kuba@...nel.org>
> > Cc: Alexei Starovoitov <ast@...nel.org>
> > Cc: Daniel Borkmann <daniel@...earbox.net>
> > Cc: Andrii Nakryiko <andrii@...nel.org>
> > Cc: Martin KaFai Lau <kafai@...com>
> > Cc: Song Liu <songliubraving@...com>
> > Cc: Yonghong Song <yhs@...com>
> > Cc: John Fastabend <john.fastabend@...il.com>
> > Cc: KP Singh <kpsingh@...nel.org>
> > Cc: Eric Dumazet <edumazet@...gle.com>
> > Cc: Antoine Tenart <atenart@...nel.org>
> > Cc: Alexander Lobakin <alexandr.lobakin@...el.com>
> > Cc: Wei Wang <weiwan@...gle.com>
> > Cc: Arnd Bergmann <arnd@...db.de>
> > --
> > 2.27.0
>
> Al



-- 
Best regards, Tonghao