netdev - Re: [PATCH nf-next] netfilter: nf

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Message-ID: <953e16f5-80bd-2098-bd7f-5f4fd74ceaaa@6wind.com>
Date:   Wed, 7 Sep 2022 17:52:13 +0200
From:   Nicolas Dichtel <nicolas.dichtel@...nd.com>
To:     Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:     Florian Westphal <fw@...len.de>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <martin.lau@...ux.dev>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Network Development <netdev@...r.kernel.org>,
        Toke Høiland-Jørgensen <toke@...nel.org>,
        netfilter-devel <netfilter-devel@...r.kernel.org>,
        bpf <bpf@...r.kernel.org>
Subject: Re: [PATCH nf-next] netfilter: nf_tables: add ebpf expression


Le 07/09/2022 à 05:04, Alexei Starovoitov a écrit :
> On Mon, Sep 5, 2022 at 11:57 PM Nicolas Dichtel
> <nicolas.dichtel@...nd.com> wrote:
>>
>>
>> Le 31/08/2022 à 23:57, Florian Westphal a écrit :
>>> Alexei Starovoitov <alexei.starovoitov@...il.com> wrote:
>>>>> This helps gradually moving towards move epbf for those that
>>>>> still heavily rely on the classic forwarding path.
>>>>
>>>> No one is using it.
>>>> If it was, we would have seen at least one bug report over
>>>> all these years. We've seen none.
>>>
>>> Err, it IS used, else I would not have sent this patch.
>>>
>>>> very reasonable early on and turned out to be useless with
>>>> zero users.
>>>> BPF_PROG_TYPE_SCHED_ACT and BPF_PROG_TYPE_LWT*
>>>> are in this category.
>>>
>>> I doubt it had 0 users.  Those users probably moved to something
>>> better?
>> We are using BPF_PROG_TYPE_SCHED_ACT to perform custom encapsulations.
>> What could we used to replace that?
> 
> SCHED_CLS. It has all of the features of cls and act combined.

Indeed, thanks.