netdev - Re: [PATCH net-next 4/6] tools/lib/bpf: expose bpf_program__set

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Date:   Fri, 31 Mar 2017 10:33:50 +0800
From:   "Wangnan (F)" <wangnan0@...wei.com>
To:     Alexei Starovoitov <ast@...com>,
        "David S . Miller" <davem@...emloft.net>
CC:     Daniel Borkmann <daniel@...earbox.net>,
        Martin KaFai Lau <kafai@...com>, <netdev@...r.kernel.org>,
        <kernel-team@...com>
Subject: Re: [PATCH net-next 4/6] tools/lib/bpf: expose
 bpf_program__set_type()



On 2017/3/31 9:31, Alexei Starovoitov wrote:
> expose bpf_program__set_type() to set program type
>
> Signed-off-by: Alexei Starovoitov <ast@...nel.org>
> Acked-by: Daniel Borkmann <daniel@...earbox.net>
> Acked-by: Martin KaFai Lau <kafai@...com>
> ---
>   tools/lib/bpf/libbpf.c | 3 +--
>   tools/lib/bpf/libbpf.h | 1 +
>   2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
> index ac6eb863b2a4..1a2c07eb7795 100644
> --- a/tools/lib/bpf/libbpf.c
> +++ b/tools/lib/bpf/libbpf.c
> @@ -1618,8 +1618,7 @@ int bpf_program__nth_fd(struct bpf_program *prog, int n)
>   	return fd;
>   }
>   
> -static void bpf_program__set_type(struct bpf_program *prog,
> -				  enum bpf_prog_type type)
> +void bpf_program__set_type(struct bpf_program *prog, enum bpf_prog_type type)
>   {
>   	prog->type = type;
>   }
> diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h
> index b30394f9947a..82adde30b696 100644
> --- a/tools/lib/bpf/libbpf.h
> +++ b/tools/lib/bpf/libbpf.h
> @@ -185,6 +185,7 @@ int bpf_program__set_sched_cls(struct bpf_program *prog);
>   int bpf_program__set_sched_act(struct bpf_program *prog);
>   int bpf_program__set_xdp(struct bpf_program *prog);
>   int bpf_program__set_perf_event(struct bpf_program *prog);
> +void bpf_program__set_type(struct bpf_program *prog, enum bpf_prog_type type);
>   

This makes libbpf.h depend on uapi/linux/bpf.h (because of enum
bpf_prog_type), which is not always available.

What about defining another enum inside libbpf.h?

Thank you.