netdev - Re: [PATCH net-next] ovpn: properly deconfigure UDP-tunnel

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Message-ID: <f74314d4-c5ab-4346-8dac-3ae8e97fb74a@openvpn.net>
Date: Wed, 14 May 2025 16:02:18 +0200
From: Antonio Quartulli <antonio@...nvpn.net>
To: Jakub Kicinski <kuba@...nel.org>
Cc: netdev@...r.kernel.org, Eric Dumazet <edumazet@...gle.com>,
 Paolo Abeni <pabeni@...hat.com>, Sabrina Dubroca <sd@...asysnail.net>,
 David Ahern <dsahern@...nel.org>
Subject: Re: [PATCH net-next] ovpn: properly deconfigure UDP-tunnel



On 14/05/2025 15:50, Jakub Kicinski wrote:
> On Wed, 14 May 2025 11:58:42 +0200 Antonio Quartulli wrote:
>> +#if IS_ENABLED(CONFIG_IPV6)
>> +	if (READ_ONCE(sk->sk_family) == PF_INET6)
>> +		static_branch_dec(&udpv6_encap_needed_key);
> 
> udpv6_encap_needed_key is only exported for ipv6.ko
> I think you need to correct the export, because with IPV6=y
> and UDP_TUNNEL=m we get:
> 
> ERROR: modpost: "udpv6_encap_needed_key" [net/ipv4/udp_tunnel.ko] undefined!

Or define and export udpv6_encap_enable() which calls only the 
static_branch_dec()?
Basically the same as the current udpv6_encap_enable().

This way we don't need to touch the export for udpv6_encap_needed_key.

Regards,

-- 
Antonio Quartulli
OpenVPN Inc.