#include <linux/netfilter/x_tables.h>
#include <linux/netfilter/xt_CONNMARK.h>
#include <net/netfilter/nf_conntrack_compat.h>
+#if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
+#include <net/netfilter/nf_conntrack_ecache.h>
+#endif
static unsigned int
target(struct sk_buff **pskb,
const struct net_device *in,
const struct net_device *out,
unsigned int hooknum,
- const void *targinfo,
- void *userinfo)
+ const struct xt_target *target,
+ const void *targinfo)
{
const struct xt_connmark_target_info *markinfo = targinfo;
u_int32_t diff;
- u_int32_t nfmark;
+ u_int32_t mark;
u_int32_t newmark;
u_int32_t ctinfo;
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)->mark & 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:
+ mark = (*pskb)->mark;
+ diff = (*ctmark ^ mark) & markinfo->mask;
+ if (diff != 0)
+ (*pskb)->mark = mark ^ diff;
+ break;
+ }
}
return XT_CONTINUE;
static int
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 (targinfosize != XT_ALIGN(sizeof(struct xt_connmark_target_info))) {
- printk(KERN_WARNING "CONNMARK: targinfosize %u != %Zu\n",
- targinfosize,
- XT_ALIGN(sizeof(struct xt_connmark_target_info)));
+
+ if (nf_ct_l3proto_try_module_get(target->family) < 0) {
+ printk(KERN_WARNING "can't load conntrack support for "
+ "proto=%d\n", target->family);
return 0;
}
-
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,
- .checkentry = &checkentry,
- .me = THIS_MODULE
-};
-static struct xt_target connmark6_reg = {
- .name = "CONNMARK",
- .target = &target,
- .checkentry = &checkentry,
- .me = THIS_MODULE
-};
-
-static int __init init(void)
+static void
+destroy(const struct xt_target *target, void *targinfo)
{
- int ret;
+ nf_ct_l3proto_module_put(target->family);
+}
- need_conntrack();
+#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;
+};
- ret = xt_register_target(AF_INET, &connmark_reg);
- if (ret)
- return ret;
+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));
+}
- ret = xt_register_target(AF_INET6, &connmark6_reg);
- if (ret)
- xt_unregister_target(AF_INET, &connmark_reg);
+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,
+ .destroy = destroy,
+ .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,
+ .destroy = destroy,
+ .target = target,
+ .targetsize = sizeof(struct xt_connmark_target_info),
+ .me = THIS_MODULE
+ },
+};
- return ret;
+static int __init xt_connmark_init(void)
+{
+ return xt_register_targets(xt_connmark_target,
+ ARRAY_SIZE(xt_connmark_target));
}
-static void __exit fini(void)
+static void __exit xt_connmark_fini(void)
{
- xt_unregister_target(AF_INET, &connmark_reg);
- xt_unregister_target(AF_INET6, &connmark6_reg);
+ xt_unregister_targets(xt_connmark_target,
+ ARRAY_SIZE(xt_connmark_target));
}
-module_init(init);
-module_exit(fini);
+module_init(xt_connmark_init);
+module_exit(xt_connmark_fini);
git://git.onelab.eu / linux-2.6.git / blobdiff