Introduce the xt_mark match revision 1. It uses fixed types,
with the goal of obsoleting revision 0 some day (uses nonfixed types).
Signed-off-by: Jan Engelhardt <jengelh@xxxxxxxxxxxxxxx>
---
include/linux/netfilter/xt_mark.h | 5 +++
net/netfilter/xt_mark.c | 53 +++++++++++++++++++++++++++++---------
2 files changed, 46 insertions(+), 12 deletions(-)
Index: linux-2.6/include/linux/netfilter/xt_mark.h
===================================================================
--- linux-2.6.orig/include/linux/netfilter/xt_mark.h
+++ linux-2.6/include/linux/netfilter/xt_mark.h
@@ -6,4 +6,9 @@ struct xt_mark_info {
u_int8_t invert;
};
+struct xt_mark_match_info {
+ u_int32_t mark, mask;
+ u_int8_t invert;
+};
+
#endif /*_XT_MARK_H*/
Index: linux-2.6/net/netfilter/xt_mark.c
===================================================================
--- linux-2.6.orig/net/netfilter/xt_mark.c
+++ linux-2.6/net/netfilter/xt_mark.c
@@ -20,19 +20,30 @@ 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_match_info *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 +62,7 @@ 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 +73,7 @@ static void mark_mt_compat_from_user(voi
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 = {
@@ -77,25 +88,43 @@ static int mark_mt_compat_to_user(void _
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),
.me = THIS_MODULE,
},
+ {
+ .name = "mark",
+ .revision = 1,
+ .family = AF_INET,
+ .match = mark_mt,
+ .matchsize = sizeof(struct xt_mark_match_info),
+ .me = THIS_MODULE,
+ },
+ {
+ .name = "mark",
+ .revision = 1,
+ .family = AF_INET6,
+ .match = mark_mt,
+ .matchsize = sizeof(struct xt_mark_match_info),
+ .me = THIS_MODULE,
+ },
};
static int __init mark_mt_init(void)
-
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