netdev - Re: Ask for help about bpf map

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Date:   Tue, 20 Jul 2021 16:50:08 +0200
From:   Toke Høiland-Jørgensen <toke@...hat.com>
To:     "luwei (O)" <luwei32@...wei.com>,
        Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:     Andrii Nakryiko <andrii.nakryiko@...il.com>,
        bpf <bpf@...r.kernel.org>, Networking <netdev@...r.kernel.org>,
        David Ahern <dahern@...italocean.com>
Subject: Re: Ask for help about bpf map

"luwei (O)" <luwei32@...wei.com> writes:

> It's very strange, in my virtual host, it is:
>
> $ ip -V
>
> ip utility, iproute2-5.11.0
>
>
> but in my physical host:
>
> $ ip -V
> ip utility, iproute2-5.11.0, libbpf 0.5.0
>
>
> I compiled iproute2 in the same way as I mentioned previously, and the 
> kernel versions are both 5.13 (in fact the same code) .

When compiling, the configure script should tell you whether it can find
libbpf. If not, it's probably because you don't have the right header
files installed...

-Toke