/* Kernel module to match connection tracking byte counter.
* GPL (C) 2002 Martin Devera (devik@cdi.cz).
- *
- * 2004-07-20 Harald Welte <laforge@netfilter.org>
- * - reimplemented to use per-connection accounting counters
- * - add functionality to match number of packets
- * - add functionality to match average packet size
- * - add support to match directions seperately
- * 2005-10-16 Harald Welte <laforge@netfilter.org>
- * - Port to x_tables
- *
*/
#include <linux/module.h>
#include <linux/skbuff.h>
-#include <net/netfilter/nf_conntrack_compat.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>
MODULE_DESCRIPTION("iptables match for matching number of pkts/bytes per connection");
MODULE_ALIAS("ipt_connbytes");
-static int
+static bool
match(const struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
const void *matchinfo,
int offset,
unsigned int protoff,
- int *hotdrop)
+ bool *hotdrop)
{
const struct xt_connbytes_info *sinfo = 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;
- if (!(counters = nf_ct_get_counters(skb)))
- return 0; /* no match */
+ ct = nf_ct_get(skb, &ctinfo);
+ if (!ct)
+ return false;
+ counters = ct->counters;
switch (sinfo->what) {
case XT_CONNBYTES_PKTS:
}
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 int check(const char *tablename,
- const void *ip,
- const struct xt_match *match,
- void *matchinfo,
- unsigned int hook_mask)
+static bool check(const char *tablename,
+ const void *ip,
+ const struct xt_match *match,
+ void *matchinfo,
+ unsigned int hook_mask)
{
const struct xt_connbytes_info *sinfo = matchinfo;
if (sinfo->what != XT_CONNBYTES_PKTS &&
sinfo->what != XT_CONNBYTES_BYTES &&
sinfo->what != XT_CONNBYTES_AVGPKT)
- return 0;
+ return false;
if (sinfo->direction != XT_CONNBYTES_DIR_ORIGINAL &&
sinfo->direction != XT_CONNBYTES_DIR_REPLY &&
sinfo->direction != XT_CONNBYTES_DIR_BOTH)
- return 0;
+ return false;
if (nf_ct_l3proto_try_module_get(match->family) < 0) {
printk(KERN_WARNING "can't load conntrack support for "
"proto=%d\n", match->family);
- return 0;
+ return false;
}
- return 1;
+ return true;
}
static void
nf_ct_l3proto_module_put(match->family);
}
-static struct xt_match xt_connbytes_match[] = {
+static struct xt_match xt_connbytes_match[] __read_mostly = {
{
.name = "connbytes",
.family = AF_INET,