From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vaishali Thakkar Subject: [PATCH] netfilter: xtables: Add helper macro for xt_match boilerplate Date: Sun, 26 Jul 2015 17:27:37 +0530 Message-ID: <20150726115737.GA14070@vaishali-Ideapad-Z570> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Patrick McHardy , Jozsef Kadlecsik , netfilter-devel@vger.kernel.org, coreteam@netfilter.org, linux-kernel@vger.kernel.org To: Pablo Neira Ayuso Return-path: Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-Id: netfilter-devel.vger.kernel.org For simple modules that contain a single xt_match without any additional setup code then ends up being a block of duplicated boilerplate. This patch adds a new macro, module_xt_match(), which replaces the module_init()/module_exit() registrations with template functions. Signed-off-by: Vaishali Thakkar --- include/linux/netfilter/x_tables.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h index 286098a..4ebf66b 100644 --- a/include/linux/netfilter/x_tables.h +++ b/include/linux/netfilter/x_tables.h @@ -142,6 +142,16 @@ struct xt_match { unsigned short family; }; +/** + * module_xt_match() - Helper macro for registering a netfilter driver + * @__xt_match: xt_match struct + * Helper macro for netfilter drivers which do not do anything special in module + * init/exit. This eliminates a lot of boilerplate. Each module may only + * use this macro once, and calling it replaces module_init() and module_exit() + */ +#define module_xt_match(__xt_match) \ + module_driver(__xt_match, xt_register_match, xt_unregister_match) + /* Registration hooks for targets. */ struct xt_target { struct list_head list; -- 1.9.1