From 55b69e91040c685a064198bd76e59885b7ad26c6 Mon Sep 17 00:00:00 2001 From: Jan Engelhardt Date: Wed, 8 Oct 2008 11:35:01 +0200 Subject: netfilter: implement NFPROTO_UNSPEC as a wildcard for extensions When a match or target is looked up using xt_find_{match,target}, Xtables will also search the NFPROTO_UNSPEC module list. This allows for protocol-independent extensions (like xt_time) to be reused from other components (e.g. arptables, ebtables). Extensions that take different codepaths depending on match->family or target->family of course cannot use NFPROTO_UNSPEC within the registration structure (e.g. xt_pkttype). Signed-off-by: Jan Engelhardt Signed-off-by: Patrick McHardy --- net/netfilter/xt_limit.c | 40 +++++++++++++--------------------------- 1 file changed, 13 insertions(+), 27 deletions(-) (limited to 'net/netfilter/xt_limit.c') diff --git a/net/netfilter/xt_limit.c b/net/netfilter/xt_limit.c index 584d66893c4b..00247bd1095e 100644 --- a/net/netfilter/xt_limit.c +++ b/net/netfilter/xt_limit.c @@ -167,43 +167,29 @@ static int limit_mt_compat_to_user(void __user *dst, void *src) } #endif /* CONFIG_COMPAT */ -static struct xt_match limit_mt_reg[] __read_mostly = { - { - .name = "limit", - .family = NFPROTO_IPV4, - .checkentry = limit_mt_check, - .match = limit_mt, - .matchsize = sizeof(struct xt_rateinfo), +static struct xt_match limit_mt_reg __read_mostly = { + .name = "limit", + .revision = 0, + .family = NFPROTO_UNSPEC, + .match = limit_mt, + .checkentry = limit_mt_check, + .matchsize = sizeof(struct xt_rateinfo), #ifdef CONFIG_COMPAT - .compatsize = sizeof(struct compat_xt_rateinfo), - .compat_from_user = limit_mt_compat_from_user, - .compat_to_user = limit_mt_compat_to_user, + .compatsize = sizeof(struct compat_xt_rateinfo), + .compat_from_user = limit_mt_compat_from_user, + .compat_to_user = limit_mt_compat_to_user, #endif - .me = THIS_MODULE, - }, - { - .name = "limit", - .family = NFPROTO_IPV6, - .checkentry = limit_mt_check, - .match = limit_mt, - .matchsize = sizeof(struct xt_rateinfo), -#ifdef CONFIG_COMPAT - .compatsize = sizeof(struct compat_xt_rateinfo), - .compat_from_user = limit_mt_compat_from_user, - .compat_to_user = limit_mt_compat_to_user, -#endif - .me = THIS_MODULE, - }, + .me = THIS_MODULE, }; static int __init limit_mt_init(void) { - return xt_register_matches(limit_mt_reg, ARRAY_SIZE(limit_mt_reg)); + return xt_register_match(&limit_mt_reg); } static void __exit limit_mt_exit(void) { - xt_unregister_matches(limit_mt_reg, ARRAY_SIZE(limit_mt_reg)); + xt_unregister_match(&limit_mt_reg); } module_init(limit_mt_init); -- cgit v1.2.3