netdev - Re: [PATCH v2 bpf-next 2/4] selftests/bpf: add __int and _

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Message-ID: <A996B443-8D44-4438-8A08-37873AEE983F@fb.com>
Date:   Fri, 28 Jun 2019 18:17:41 +0000
From:   Song Liu <songliubraving@...com>
To:     Andrii Nakryiko <andriin@...com>
CC:     Andrii Nakryiko <andrii.nakryiko@...il.com>,
        Alexei Starovoitov <ast@...com>,
        "daniel@...earbox.net" <daniel@...earbox.net>,
        "bpf@...r.kernel.org" <bpf@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH v2 bpf-next 2/4] selftests/bpf: add __int and __type macro
 for BTF-defined maps



> On Jun 28, 2019, at 8:25 AM, Andrii Nakryiko <andriin@...com> wrote:
> 
> Add simple __int and __type macro that hide details of how type and
> integer values are captured in BTF-defined maps.
> 
> Signed-off-by: Andrii Nakryiko <andriin@...com>

Acked-by: Song Liu <songliubraving@...com>

> ---
> tools/testing/selftests/bpf/bpf_helpers.h | 3 +++
> 1 file changed, 3 insertions(+)
> 
> diff --git a/tools/testing/selftests/bpf/bpf_helpers.h b/tools/testing/selftests/bpf/bpf_helpers.h
> index 1a5b1accf091..aa5ddf58c088 100644
> --- a/tools/testing/selftests/bpf/bpf_helpers.h
> +++ b/tools/testing/selftests/bpf/bpf_helpers.h
> @@ -8,6 +8,9 @@
>  */
> #define SEC(NAME) __attribute__((section(NAME), used))
> 
> +#define __int(name, val) int (*name)[val]
> +#define __type(name, val) val *name
> +
> /* helper macro to print out debug messages */
> #define bpf_printk(fmt, ...)				\
> ({							\
> -- 
> 2.17.1
>