linux-kernel - RE: [PATCH bpf-next 3/6] bpf: sockmap: call sock_map_update

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Date:   Wed, 19 Aug 2020 13:29:07 -0700
From:   John Fastabend <john.fastabend@...il.com>
To:     Lorenz Bauer <lmb@...udflare.com>, jakub@...udflare.com,
        john.fastabend@...il.com, Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Lorenz Bauer <lmb@...udflare.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     kernel-team@...udflare.com, netdev@...r.kernel.org,
        bpf@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: RE: [PATCH bpf-next 3/6] bpf: sockmap: call sock_map_update_elem
 directly

Lorenz Bauer wrote:
> Don't go via map->ops to call sock_map_update_elem, since we know
> what function to call in bpf_map_update_value. Since
> check_map_func_compatibility doesn't allow calling
> BPF_FUNC_map_update_elem from BPF context, we can remove
> ops->map_update_elem and rename the function to
> sock_map_update_elem_sys.
> 
> Signed-off-by: Lorenz Bauer <lmb@...udflare.com>
> ---

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