* GPL (C) 2002 Martin Devera (devik@cdi.cz).
*/
#include <linux/module.h>
+#include <linux/bitops.h>
#include <linux/skbuff.h>
+#include <linux/math64.h>
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter/xt_connbytes.h>
#include <net/netfilter/nf_conntrack.h>
-
-#include <asm/div64.h>
-#include <asm/bitops.h>
+#include <net/netfilter/nf_conntrack_acct.h>
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>");
-MODULE_DESCRIPTION("iptables match for matching number of pkts/bytes per connection");
+MODULE_DESCRIPTION("Xtables: Number of packets/bytes per connection matching");
MODULE_ALIAS("ipt_connbytes");
+MODULE_ALIAS("ip6t_connbytes");
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)
+connbytes_mt(const struct sk_buff *skb, const struct xt_match_param *par)
{
- const struct xt_connbytes_info *sinfo = matchinfo;
+ const struct xt_connbytes_info *sinfo = par->matchinfo;
const struct nf_conn *ct;
enum ip_conntrack_info ctinfo;
u_int64_t what = 0; /* initialize to make gcc happy */
u_int64_t bytes = 0;
u_int64_t pkts = 0;
- const struct ip_conntrack_counter *counters;
+ const struct nf_conn_counter *counters;
ct = nf_ct_get(skb, &ctinfo);
if (!ct)
return false;
- counters = ct->counters;
+
+ counters = nf_conn_acct_find(ct);
+ if (!counters)
+ return false;
switch (sinfo->what) {
case XT_CONNBYTES_PKTS:
break;
}
if (pkts != 0)
- what = div64_64(bytes, pkts);
+ what = div64_u64(bytes, pkts);
break;
}
if (sinfo->count.to)
- return (what <= sinfo->count.to && what >= sinfo->count.from);
+ return what <= sinfo->count.to && what >= sinfo->count.from;
else
- return (what >= sinfo->count.from);
+ return what >= sinfo->count.from;
}
-static bool check(const char *tablename,
- const void *ip,
- const struct xt_match *match,
- void *matchinfo,
- unsigned int hook_mask)
+static bool connbytes_mt_check(const struct xt_mtchk_param *par)
{
- const struct xt_connbytes_info *sinfo = matchinfo;
+ const struct xt_connbytes_info *sinfo = par->matchinfo;
if (sinfo->what != XT_CONNBYTES_PKTS &&
sinfo->what != XT_CONNBYTES_BYTES &&
sinfo->direction != XT_CONNBYTES_DIR_BOTH)
return false;
- if (nf_ct_l3proto_try_module_get(match->family) < 0) {
+ if (nf_ct_l3proto_try_module_get(par->family) < 0) {
printk(KERN_WARNING "can't load conntrack support for "
- "proto=%d\n", match->family);
+ "proto=%u\n", par->family);
return false;
}
return true;
}
-static void
-destroy(const struct xt_match *match, void *matchinfo)
+static void connbytes_mt_destroy(const struct xt_mtdtor_param *par)
{
- nf_ct_l3proto_module_put(match->family);
+ nf_ct_l3proto_module_put(par->family);
}
-static struct xt_match xt_connbytes_match[] = {
- {
- .name = "connbytes",
- .family = AF_INET,
- .checkentry = check,
- .match = match,
- .destroy = destroy,
- .matchsize = sizeof(struct xt_connbytes_info),
- .me = THIS_MODULE
- },
- {
- .name = "connbytes",
- .family = AF_INET6,
- .checkentry = check,
- .match = match,
- .destroy = destroy,
- .matchsize = sizeof(struct xt_connbytes_info),
- .me = THIS_MODULE
- },
+static struct xt_match connbytes_mt_reg __read_mostly = {
+ .name = "connbytes",
+ .revision = 0,
+ .family = NFPROTO_UNSPEC,
+ .checkentry = connbytes_mt_check,
+ .match = connbytes_mt,
+ .destroy = connbytes_mt_destroy,
+ .matchsize = sizeof(struct xt_connbytes_info),
+ .me = THIS_MODULE,
};
-static int __init xt_connbytes_init(void)
+static int __init connbytes_mt_init(void)
{
- return xt_register_matches(xt_connbytes_match,
- ARRAY_SIZE(xt_connbytes_match));
+ return xt_register_match(&connbytes_mt_reg);
}
-static void __exit xt_connbytes_fini(void)
+static void __exit connbytes_mt_exit(void)
{
- xt_unregister_matches(xt_connbytes_match,
- ARRAY_SIZE(xt_connbytes_match));
+ xt_unregister_match(&connbytes_mt_reg);
}
-module_init(xt_connbytes_init);
-module_exit(xt_connbytes_fini);
+module_init(connbytes_mt_init);
+module_exit(connbytes_mt_exit);