netdev - Re: [PATCH bpf-next 2/2] libbpf: Introduce bpf_object_

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Message-ID: <fadf66fb-1ce5-06eb-d774-cb13219f802b@fb.com>
Date:   Fri, 15 Feb 2019 01:53:13 +0000
From:   Yonghong Song <yhs@...com>
To:     Andrey Ignatov <rdna@...com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC:     "ast@...nel.org" <ast@...nel.org>,
        "daniel@...earbox.net" <daniel@...earbox.net>,
        Kernel Team <Kernel-team@...com>
Subject: Re: [PATCH bpf-next 2/2] libbpf: Introduce bpf_object__btf



On 2/14/19 3:01 PM, Andrey Ignatov wrote:
> Add new accessor for bpf_object to get opaque struct btf * from it.
> 
> struct btf * is needed for all operations with BTF and it's present in
> bpf_object. The only thing missing is a way to get it.
> 
> Example use-case is to get BTF key_type_id an value_type_id for a map in
nit: an => and
> bpf_object. It can be done with btf__get_map_kv_tids() but that function
> requires struct btf *.
> 
> Similar API can be added for struct btf_ext but no use-case for it yet.
> 
> Signed-off-by: Andrey Ignatov <rdna@...com>

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