diff options
Diffstat (limited to 'net/netfilter/xt_mark.c')
| -rw-r--r-- | net/netfilter/xt_mark.c | 100 |
1 files changed, 65 insertions, 35 deletions
diff --git a/net/netfilter/xt_mark.c b/net/netfilter/xt_mark.c index c02a7f8f392..9f78f6120fb 100644 --- a/net/netfilter/xt_mark.c +++ b/net/netfilter/xt_mark.c @@ -1,10 +1,13 @@ -/* Kernel module to match NFMARK values. */ - -/* (C) 1999-2001 Marc Boucher <marc@mbsi.ca> +/* + * xt_mark - Netfilter module to match NFMARK value + * + * (C) 1999-2001 Marc Boucher <marc@mbsi.ca> + * Copyright © CC Computer Consultants GmbH, 2007 - 2008 + * Jan Engelhardt <jengelh@computergmbh.de> * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. */ #include <linux/module.h> @@ -15,19 +18,15 @@ MODULE_LICENSE("GPL"); MODULE_AUTHOR("Marc Boucher <marc@mbsi.ca>"); -MODULE_DESCRIPTION("iptables mark matching module"); +MODULE_DESCRIPTION("Xtables: packet mark match"); MODULE_ALIAS("ipt_mark"); MODULE_ALIAS("ip6t_mark"); static bool -match(const struct sk_buff *skb, - const struct net_device *in, - const struct net_device *out, - const struct xt_match *match, - const void *matchinfo, - int offset, - unsigned int protoff, - bool *hotdrop) +mark_mt_v0(const struct sk_buff *skb, const struct net_device *in, + const struct net_device *out, const struct xt_match *match, + const void *matchinfo, int offset, unsigned int protoff, + bool *hotdrop) { const struct xt_mark_info *info = matchinfo; @@ -35,11 +34,19 @@ match(const struct sk_buff *skb, } static bool -checkentry(const char *tablename, - const void *entry, - const struct xt_match *match, - void *matchinfo, - unsigned int hook_mask) +mark_mt(const struct sk_buff *skb, const struct net_device *in, + const struct net_device *out, const struct xt_match *match, + const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop) +{ + const struct xt_mark_mtinfo1 *info = matchinfo; + + return ((skb->mark & info->mask) == info->mark) ^ info->invert; +} + +static bool +mark_mt_check_v0(const char *tablename, const void *entry, + const struct xt_match *match, void *matchinfo, + unsigned int hook_mask) { const struct xt_mark_info *minfo = matchinfo; @@ -58,7 +65,7 @@ struct compat_xt_mark_info { u_int16_t __pad2; }; -static void compat_from_user(void *dst, void *src) +static void mark_mt_compat_from_user_v0(void *dst, void *src) { const struct compat_xt_mark_info *cm = src; struct xt_mark_info m = { @@ -69,7 +76,7 @@ static void compat_from_user(void *dst, void *src) memcpy(dst, &m, sizeof(m)); } -static int compat_to_user(void __user *dst, void *src) +static int mark_mt_compat_to_user_v0(void __user *dst, void *src) { const struct xt_mark_info *m = src; struct compat_xt_mark_info cm = { @@ -81,39 +88,62 @@ static int compat_to_user(void __user *dst, void *src) } #endif /* CONFIG_COMPAT */ -static struct xt_match xt_mark_match[] __read_mostly = { +static struct xt_match mark_mt_reg[] __read_mostly = { { .name = "mark", + .revision = 0, .family = AF_INET, - .checkentry = checkentry, - .match = match, + .checkentry = mark_mt_check_v0, + .match = mark_mt_v0, .matchsize = sizeof(struct xt_mark_info), #ifdef CONFIG_COMPAT .compatsize = sizeof(struct compat_xt_mark_info), - .compat_from_user = compat_from_user, - .compat_to_user = compat_to_user, + .compat_from_user = mark_mt_compat_from_user_v0, + .compat_to_user = mark_mt_compat_to_user_v0, #endif .me = THIS_MODULE, }, { .name = "mark", + .revision = 0, .family = AF_INET6, - .checkentry = checkentry, - .match = match, + .checkentry = mark_mt_check_v0, + .match = mark_mt_v0, .matchsize = sizeof(struct xt_mark_info), +#ifdef CONFIG_COMPAT + .compatsize = sizeof(struct compat_xt_mark_info), + .compat_from_user = mark_mt_compat_from_user_v0, + .compat_to_user = mark_mt_compat_to_user_v0, +#endif .me = THIS_MODULE, }, + { + .name = "mark", + .revision = 1, + .family = AF_INET, + .match = mark_mt, + .matchsize = sizeof(struct xt_mark_mtinfo1), + .me = THIS_MODULE, + }, + { + .name = "mark", + .revision = 1, + .family = AF_INET6, + .match = mark_mt, + .matchsize = sizeof(struct xt_mark_mtinfo1), + .me = THIS_MODULE, + }, }; -static int __init xt_mark_init(void) +static int __init mark_mt_init(void) { - return xt_register_matches(xt_mark_match, ARRAY_SIZE(xt_mark_match)); + return xt_register_matches(mark_mt_reg, ARRAY_SIZE(mark_mt_reg)); } -static void __exit xt_mark_fini(void) +static void __exit mark_mt_exit(void) { - xt_unregister_matches(xt_mark_match, ARRAY_SIZE(xt_mark_match)); + xt_unregister_matches(mark_mt_reg, ARRAY_SIZE(mark_mt_reg)); } -module_init(xt_mark_init); -module_exit(xt_mark_fini); +module_init(mark_mt_init); +module_exit(mark_mt_exit); |