netdev - Re: [PATCH bpf-next v4 1/7] libbpf: Add a helper for retrieving a map fd for a given name

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Message-ID: <4ad3afa8-f2c3-50a9-d2a0-e8db683236bb@gmail.com>
Date:   Mon, 28 Jan 2019 12:49:35 -0800
From:   John Fastabend <john.fastabend@...il.com>
To:     Maciej Fijalkowski <maciejromanfijalkowski@...il.com>,
        daniel@...earbox.net, ast@...nel.org
Cc:     netdev@...r.kernel.org, jakub.kicinski@...ronome.com,
        brouer@...hat.com
Subject: Re: [PATCH bpf-next v4 1/7] libbpf: Add a helper for retrieving a map
 fd for a given name

On 1/28/19 11:16 AM, Maciej Fijalkowski wrote:
> From: Maciej Fijalkowski <maciej.fijalkowski@...el.com>
> 
> XDP samples are mostly cooperating with eBPF maps through their file
> descriptors. In case of a eBPF program that contains multiple maps it
> might be tiresome to iterate through them and call bpf_map__fd for each
> one. Add a helper mostly based on bpf_object__find_map_by_name, but
> instead of returning the struct bpf_map pointer, return map fd.
> 
> Suggested-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
> Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@...el.com>
> Reviewed-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
> ---

I've been carrying something similar around for awhile as well.

Acked-by: John Fastabend <john.fastabend@...il.com>