From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH] udp: Unbreak modules that rely on external
 __skb_recv_udp() availability
Date: Sun, 07 Oct 2018 20:34:21 -0700 (PDT)
Message-ID: <20181007.203421.1496534902899406968.davem@davemloft.net>
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Cc: yoshfuji@linux-ipv6.org, pabeni@redhat.com, edumazet@google.com,
        netdev@vger.kernel.org, linux-kernel@vger.kernel.org
To: jikos@kernel.org
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From: Jiri Kosina <jikos@kernel.org>
Date: Thu, 4 Oct 2018 13:37:32 +0200 (CEST)

> From: Jiri Kosina <jkosina@suse.cz>
> 
> Commit 2276f58ac589 ("udp: use a separate rx queue for packet reception")
> turned static inline __skb_recv_udp() from being a trivial helper around
> __skb_recv_datagram() into a UDP specific implementaion, making it
> EXPORT_SYMBOL_GPL() at the same time.
> 
> There are external modules that got broken by __skb_recv_udp() not being
> visible to them. Let's unbreak them by making __skb_recv_udp EXPORT_SYMBOL().
> 
> Rationale (one of those) why this is actually "technically correct" thing 
> to do: __skb_recv_udp() used to be an inline wrapper around 
> __skb_recv_datagram(), which itself (still, and correctly so, I believe) 
> is EXPORT_SYMBOL().
> 
> Cc: Paolo Abeni <pabeni@redhat.com>
> Cc: Eric Dumazet <edumazet@google.com>
> Fixes: 2276f58ac589 ("udp: use a separate rx queue for packet reception")
> Signed-off-by: Jiri Kosina <jkosina@suse.cz>

Applied...

But waiting from 4.13 until now to bring this up is really pushing it...