diff options
| -rw-r--r-- | include/linux/netfilter/xt_mark.h | 5 | ||||
| -rw-r--r-- | net/netfilter/xt_mark.c | 72 |
2 files changed, 57 insertions, 20 deletions
diff --git a/include/linux/netfilter/xt_mark.h b/include/linux/netfilter/xt_mark.h index 802dd48..fae74bc 100644 --- a/include/linux/netfilter/xt_mark.h +++ b/include/linux/netfilter/xt_mark.h @@ -6,4 +6,9 @@ struct xt_mark_info { u_int8_t invert; }; +struct xt_mark_mtinfo1 { + u_int32_t mark, mask; + u_int8_t invert; +}; + #endif /*_XT_MARK_H*/ diff --git a/net/netfilter/xt_mark.c b/net/netfilter/xt_mark.c index ce8735e..5cc8cc5 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> @@ -20,19 +23,30 @@ MODULE_ALIAS("ipt_mark"); MODULE_ALIAS("ip6t_mark"); static bool +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; + + return ((skb->mark & info->mask) == info->mark) ^ info->invert; +} + +static bool 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_info *info = matchinfo; + const struct xt_mark_mtinfo1 *info = matchinfo; return ((skb->mark & info->mask) == info->mark) ^ info->invert; } static bool -mark_mt_check(const char *tablename, const void *entry, - const struct xt_match *match, void *matchinfo, - unsigned int hook_mask) +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; @@ -51,7 +65,7 @@ struct compat_xt_mark_info { u_int16_t __pad2; }; -static void mark_mt_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 = { @@ -62,7 +76,7 @@ static void mark_mt_compat_from_user(void *dst, void *src) memcpy(dst, &m, sizeof(m)); } -static int mark_mt_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 = { @@ -77,30 +91,48 @@ static int mark_mt_compat_to_user(void __user *dst, void *src) static struct xt_match mark_mt_reg[] __read_mostly = { { .name = "mark", + .revision = 0, .family = AF_INET, - .checkentry = mark_mt_check, - .match = mark_mt, + .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, - .compat_to_user = mark_mt_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 = mark_mt_check, - .match = mark_mt, + .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, - .compat_to_user = mark_mt_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 = 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 mark_mt_init(void) |