netdev - Re: [PATCH] netfilter: add back NETFILTER

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Message-ID: <uadem53d2ymvjweqjdvilrpr2vwsfxu2gbwyaopacyl3x2zmhl@raeakspbvdiw>
Date: Thu, 31 Jul 2025 12:58:31 -0700
From: Breno Leitao <leitao@...ian.org>
To: Arnd Bergmann <arnd@...nel.org>
Cc: Pablo Neira Ayuso <pablo@...filter.org>, 
	Jozsef Kadlecsik <kadlec@...filter.org>, Nikolay Aleksandrov <razor@...ckwall.org>, 
	Ido Schimmel <idosch@...dia.com>, "David S. Miller" <davem@...emloft.net>, 
	Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>, David Ahern <dsahern@...nel.org>, 
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>, Arnd Bergmann <arnd@...db.de>, Simon Horman <horms@...nel.org>, 
	netfilter-devel@...r.kernel.org, coreteam@...filter.org, bridge@...ts.linux.dev, 
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] netfilter: add back NETFILTER_XTABLES dependencies

On Wed, Jul 30, 2025 at 11:45:32PM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> Some Kconfig symbols were changed to depend on the 'bool' symbol
> NETFILTER_XTABLES_LEGACY, which means they can now be set to built-in
> when the xtables code itself is in a loadable module:
> 
> x86_64-linux-ld: vmlinux.o: in function `arpt_unregister_table_pre_exit':
> (.text+0x1831987): undefined reference to `xt_find_table'
> x86_64-linux-ld: vmlinux.o: in function `get_info.constprop.0':
> arp_tables.c:(.text+0x1831aab): undefined reference to `xt_request_find_table_lock'
> x86_64-linux-ld: arp_tables.c:(.text+0x1831bea): undefined reference to `xt_table_unlock'
> x86_64-linux-ld: vmlinux.o: in function `do_arpt_get_ctl':
> arp_tables.c:(.text+0x183205d): undefined reference to `xt_find_table_lock'
> x86_64-linux-ld: arp_tables.c:(.text+0x18320c1): undefined reference to `xt_table_unlock'
> x86_64-linux-ld: arp_tables.c:(.text+0x183219a): undefined reference to `xt_recseq'
> 
> Change these to depend on both NETFILTER_XTABLES and
> NETFILTER_XTABLES_LEGACY.
> 
> Fixes: 9fce66583f06 ("netfilter: Exclude LEGACY TABLES on PREEMPT_RT.")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Tested-by: Breno Leitao <leitao@...ian.org>