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Date:   Wed, 5 Aug 2020 10:38:10 -0600
From:   David Ahern <dsahern@...il.com>
To:     Yoshiki Komachi <komachi.yoshiki@...il.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        Andrii Nakryiko <andriin@...com>,
        KP Singh <kpsingh@...omium.org>,
        Roopa Prabhu <roopa@...ulusnetworks.com>,
        Nikolay Aleksandrov <nikolay@...ulusnetworks.com>,
        David Ahern <dsahern@...nel.org>, netdev@...r.kernel.org,
        bridge@...ts.linux-foundation.org, bpf@...r.kernel.org
Subject: Re: [RFC PATCH bpf-next 2/3] bpf: Add helper to do forwarding lookups
 in kernel FDB table

On 8/4/20 5:27 AM, Yoshiki Komachi wrote:
> 
> I guess that no build errors will occur because the API is allowed when
> CONFIG_BRIDGE is enabled.
> 
> I successfully build my kernel applying this patch, and I don’t receive any
> messages from build robots for now.

If CONFIG_BRIDGE is a module, build should fail: filter.c is built-in
trying to access a symbol from module.

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