- Update to 2.6.25-rc3.

[linux-flexiantxendom0-3.2.10.git] / net / netfilter / xt_mark.c

diff --git a/net/netfilter/xt_mark.c b/net/netfilter/xt_mark.c
index c02a7f8..9f78f61 100644 (file)
--- 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);