netdev - Re: [RFC bpf-next 0/5] Convert iproute2 to use libbpf (WIP)

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAEf4Bzbzz3s0bSF_CkP56NTDd+WBLAy0QrMvreShubetahuH0g@mail.gmail.com>
Date:   Mon, 3 Feb 2020 19:41:33 -0800
From:   Andrii Nakryiko <andrii.nakryiko@...il.com>
To:     David Ahern <dsahern@...il.com>
Cc:     Toke Høiland-Jørgensen <toke@...hat.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Stephen Hemminger <stephen@...workplumber.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        David Miller <davem@...emloft.net>,
        Jesper Dangaard Brouer <brouer@...hat.com>,
        Networking <netdev@...r.kernel.org>, bpf <bpf@...r.kernel.org>
Subject: Re: [RFC bpf-next 0/5] Convert iproute2 to use libbpf (WIP)

On Mon, Feb 3, 2020 at 5:46 PM David Ahern <dsahern@...il.com> wrote:
>
> On 2/3/20 5:56 PM, Andrii Nakryiko wrote:
> > Great! Just to disambiguate and make sure we are in agreement, my hope
> > here is that iproute2 can completely delegate to libbpf all the ELF
> >
>
> iproute2 needs to compile and continue working as is when libbpf is not
> available. e.g., add check in configure to define HAVE_LIBBPF and move
> the existing code and move under else branch.

Wouldn't it be better to statically compile against libbpf in this
case and get rid a lot of BPF-related code and simplify the rest of
it? This can be easily done by using libbpf through submodule, the
same way as BCC and pahole do it.