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path: root/net/netfilter/xt_CONNMARK.c
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Diffstat (limited to 'net/netfilter/xt_CONNMARK.c')
-rw-r--r--net/netfilter/xt_CONNMARK.c148
1 files changed, 93 insertions, 55 deletions
diff --git a/net/netfilter/xt_CONNMARK.c b/net/netfilter/xt_CONNMARK.c
index 60c375d36f0..c01524f817f 100644
--- a/net/netfilter/xt_CONNMARK.c
+++ b/net/netfilter/xt_CONNMARK.c
@@ -38,8 +38,7 @@ target(struct sk_buff **pskb,
const struct net_device *out,
unsigned int hooknum,
const struct xt_target *target,
- const void *targinfo,
- void *userinfo)
+ const void *targinfo)
{
const struct xt_connmark_target_info *markinfo = targinfo;
u_int32_t diff;
@@ -49,24 +48,37 @@ target(struct sk_buff **pskb,
u_int32_t *ctmark = nf_ct_get_mark(*pskb, &ctinfo);
if (ctmark) {
- switch(markinfo->mode) {
- case XT_CONNMARK_SET:
- newmark = (*ctmark & ~markinfo->mask) | markinfo->mark;
- if (newmark != *ctmark)
- *ctmark = newmark;
- break;
- case XT_CONNMARK_SAVE:
- newmark = (*ctmark & ~markinfo->mask) | ((*pskb)->nfmark & markinfo->mask);
- if (*ctmark != newmark)
- *ctmark = newmark;
- break;
- case XT_CONNMARK_RESTORE:
- nfmark = (*pskb)->nfmark;
- diff = (*ctmark ^ nfmark) & markinfo->mask;
- if (diff != 0)
- (*pskb)->nfmark = nfmark ^ diff;
- break;
- }
+ switch(markinfo->mode) {
+ case XT_CONNMARK_SET:
+ newmark = (*ctmark & ~markinfo->mask) | markinfo->mark;
+ if (newmark != *ctmark) {
+ *ctmark = newmark;
+#if defined(CONFIG_IP_NF_CONNTRACK) || defined(CONFIG_IP_NF_CONNTRACK_MODULE)
+ ip_conntrack_event_cache(IPCT_MARK, *pskb);
+#else
+ nf_conntrack_event_cache(IPCT_MARK, *pskb);
+#endif
+ }
+ break;
+ case XT_CONNMARK_SAVE:
+ newmark = (*ctmark & ~markinfo->mask) |
+ ((*pskb)->nfmark & markinfo->mask);
+ if (*ctmark != newmark) {
+ *ctmark = newmark;
+#if defined(CONFIG_IP_NF_CONNTRACK) || defined(CONFIG_IP_NF_CONNTRACK_MODULE)
+ ip_conntrack_event_cache(IPCT_MARK, *pskb);
+#else
+ nf_conntrack_event_cache(IPCT_MARK, *pskb);
+#endif
+ }
+ break;
+ case XT_CONNMARK_RESTORE:
+ nfmark = (*pskb)->nfmark;
+ diff = (*ctmark ^ nfmark) & markinfo->mask;
+ if (diff != 0)
+ (*pskb)->nfmark = nfmark ^ diff;
+ break;
+ }
}
return XT_CONTINUE;
@@ -77,65 +89,91 @@ checkentry(const char *tablename,
const void *entry,
const struct xt_target *target,
void *targinfo,
- unsigned int targinfosize,
unsigned int hook_mask)
{
struct xt_connmark_target_info *matchinfo = targinfo;
if (matchinfo->mode == XT_CONNMARK_RESTORE) {
- if (strcmp(tablename, "mangle") != 0) {
- printk(KERN_WARNING "CONNMARK: restore can only be called from \"mangle\" table, not \"%s\"\n", tablename);
- return 0;
- }
+ if (strcmp(tablename, "mangle") != 0) {
+ printk(KERN_WARNING "CONNMARK: restore can only be "
+ "called from \"mangle\" table, not \"%s\"\n",
+ tablename);
+ return 0;
+ }
}
-
if (matchinfo->mark > 0xffffffff || matchinfo->mask > 0xffffffff) {
printk(KERN_WARNING "CONNMARK: Only supports 32bit mark\n");
return 0;
}
-
return 1;
}
-static struct xt_target connmark_reg = {
- .name = "CONNMARK",
- .target = target,
- .targetsize = sizeof(struct xt_connmark_target_info),
- .checkentry = checkentry,
- .family = AF_INET,
- .me = THIS_MODULE
+#ifdef CONFIG_COMPAT
+struct compat_xt_connmark_target_info {
+ compat_ulong_t mark, mask;
+ u_int8_t mode;
+ u_int8_t __pad1;
+ u_int16_t __pad2;
};
-static struct xt_target connmark6_reg = {
- .name = "CONNMARK",
- .target = target,
- .targetsize = sizeof(struct xt_connmark_target_info),
- .checkentry = checkentry,
- .family = AF_INET6,
- .me = THIS_MODULE
+static void compat_from_user(void *dst, void *src)
+{
+ struct compat_xt_connmark_target_info *cm = src;
+ struct xt_connmark_target_info m = {
+ .mark = cm->mark,
+ .mask = cm->mask,
+ .mode = cm->mode,
+ };
+ memcpy(dst, &m, sizeof(m));
+}
+
+static int compat_to_user(void __user *dst, void *src)
+{
+ struct xt_connmark_target_info *m = src;
+ struct compat_xt_connmark_target_info cm = {
+ .mark = m->mark,
+ .mask = m->mask,
+ .mode = m->mode,
+ };
+ return copy_to_user(dst, &cm, sizeof(cm)) ? -EFAULT : 0;
+}
+#endif /* CONFIG_COMPAT */
+
+static struct xt_target xt_connmark_target[] = {
+ {
+ .name = "CONNMARK",
+ .family = AF_INET,
+ .checkentry = checkentry,
+ .target = target,
+ .targetsize = sizeof(struct xt_connmark_target_info),
+#ifdef CONFIG_COMPAT
+ .compatsize = sizeof(struct compat_xt_connmark_target_info),
+ .compat_from_user = compat_from_user,
+ .compat_to_user = compat_to_user,
+#endif
+ .me = THIS_MODULE
+ },
+ {
+ .name = "CONNMARK",
+ .family = AF_INET6,
+ .checkentry = checkentry,
+ .target = target,
+ .targetsize = sizeof(struct xt_connmark_target_info),
+ .me = THIS_MODULE
+ },
};
static int __init xt_connmark_init(void)
{
- int ret;
-
need_conntrack();
-
- ret = xt_register_target(&connmark_reg);
- if (ret)
- return ret;
-
- ret = xt_register_target(&connmark6_reg);
- if (ret)
- xt_unregister_target(&connmark_reg);
-
- return ret;
+ return xt_register_targets(xt_connmark_target,
+ ARRAY_SIZE(xt_connmark_target));
}
static void __exit xt_connmark_fini(void)
{
- xt_unregister_target(&connmark_reg);
- xt_unregister_target(&connmark6_reg);
+ xt_unregister_targets(xt_connmark_target,
+ ARRAY_SIZE(xt_connmark_target));
}
module_init(xt_connmark_init);