netdev - Re: [PATCH bpf-next v3 08/12] bpf, sockmap: Let all kernel-land lookup values in SOCKMAP

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Date:   Wed, 22 Jan 2020 23:02:11 +0000
From:   Martin Lau <kafai@...com>
To:     Jakub Sitnicki <jakub@...udflare.com>
CC:     "bpf@...r.kernel.org" <bpf@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "kernel-team@...udflare.com" <kernel-team@...udflare.com>,
        Alexei Starovoitov <alexei.starovoitov@...il.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        "John Fastabend" <john.fastabend@...il.com>,
        Lorenz Bauer <lmb@...udflare.com>
Subject: Re: [PATCH bpf-next v3 08/12] bpf, sockmap: Let all kernel-land
 lookup values in SOCKMAP

On Wed, Jan 22, 2020 at 02:05:45PM +0100, Jakub Sitnicki wrote:
> Don't require the kernel code, like BPF helpers, that needs access to
> SOCKMAP map contents to live in net/core/sock_map.c. Expose the SOCKMAP
> lookup operation to all kernel-land.
> 
> Lookup from BPF context is not whitelisted yet. While syscalls have a
> dedicated lookup handler.
Acked-by: Martin KaFai Lau <kafai@...com>