netdev - Re: [PATCH bpf-next] selftest/bpf: make bpf_iter selftest compilable against old vmlinux.h

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Message-ID: <6633a04c-aab4-5182-2bed-28b235436932@fb.com>
Date:   Mon, 18 May 2020 18:42:24 -0700
From:   Yonghong Song <yhs@...com>
To:     Andrii Nakryiko <andriin@...com>, <bpf@...r.kernel.org>,
        <netdev@...r.kernel.org>, <ast@...com>, <daniel@...earbox.net>
CC:     <andrii.nakryiko@...il.com>, <kernel-team@...com>,
        Jesper Dangaard Brouer <brouer@...hat.com>
Subject: Re: [PATCH bpf-next] selftest/bpf: make bpf_iter selftest compilable
 against old vmlinux.h



On 5/18/20 4:45 PM, Andrii Nakryiko wrote:
> It's good to be able to compile bpf_iter selftest even on systems that don't
> have the very latest vmlinux.h, e.g., for libbpf tests against older kernels in
> Travis CI. To that extent, re-define bpf_iter_meta and corresponding bpf_iter
> context structs in each selftest. To avoid type clashes with vmlinux.h, rename
> vmlinux.h's definitions to get them out of the way.
> 
> Cc: Jesper Dangaard Brouer <brouer@...hat.com>
> Cc: Yonghong Song <yhs@...com>
> Signed-off-by: Andrii Nakryiko <andriin@...com>

Acked-by: Yonghong Song <yhs@...com>