netdev - Re: [PATCH bpf-next 3/3] bpftool: support loading flow dissector

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Message-ID: <20181107231333.n34ffy4dl6rtbs7e@mini-arch>
Date:   Wed, 7 Nov 2018 15:13:33 -0800
From:   Stanislav Fomichev <sdf@...ichev.me>
To:     Jakub Kicinski <jakub.kicinski@...ronome.com>
Cc:     Stanislav Fomichev <sdf@...gle.com>, netdev@...r.kernel.org,
        linux-kselftest@...r.kernel.org, ast@...nel.org,
        daniel@...earbox.net, shuah@...nel.org,
        quentin.monnet@...ronome.com, guro@...com,
        jiong.wang@...ronome.com, bhole_prashant_q7@....ntt.co.jp,
        john.fastabend@...il.com, jbenc@...hat.com,
        treeze.taeung@...il.com, yhs@...com, osk@...com,
        sandipan@...ux.vnet.ibm.com
Subject: Re: [PATCH bpf-next 3/3] bpftool: support loading flow dissector

On 11/07, Jakub Kicinski wrote:
> On Wed,  7 Nov 2018 14:43:56 -0800, Stanislav Fomichev wrote:
> > bpftool map update pinned /sys/fs/bpf/flow/jmp_table \
> >         key 0 0 0 0 \
> >         value pinned /sys/fs/bpf/flow/IP/0
> 
> Where is that /0 coming from ?  Is that in source code?  I don't see
> libbpf adding it, maybe I'm missing something.
libbpf adds that, that's a program instance:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/tools/lib/bpf/libbpf.c#n1744