* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/slab.h>
#include <linux/module.h>
#define CREDITS_PER_JIFFY POW2_BELOW32(MAX_CPJ)
static bool
-limit_mt(const struct sk_buff *skb, const struct xt_match_param *par)
+limit_mt(const struct sk_buff *skb, const struct xt_action_param *par)
{
const struct xt_rateinfo *r = par->matchinfo;
struct xt_limit_priv *priv = r->master;
return (user * HZ * CREDITS_PER_JIFFY) / XT_LIMIT_SCALE;
}
-static bool limit_mt_check(const struct xt_mtchk_param *par)
+static int limit_mt_check(const struct xt_mtchk_param *par)
{
struct xt_rateinfo *r = par->matchinfo;
struct xt_limit_priv *priv;
/* Check for overflow. */
if (r->burst == 0
|| user2credits(r->avg * r->burst) < user2credits(r->avg)) {
- printk("Overflow in xt_limit, try lower: %u/%u\n",
- r->avg, r->burst);
- return false;
+ pr_info("Overflow, try lower: %u/%u\n",
+ r->avg, r->burst);
+ return -ERANGE;
}
priv = kmalloc(sizeof(*priv), GFP_KERNEL);
if (priv == NULL)
- return false;
+ return -ENOMEM;
/* For SMP, we only want to use one set of state. */
r->master = priv;
r->credit_cap = user2credits(r->avg * r->burst); /* Credits full. */
r->cost = user2credits(r->avg);
}
- return true;
+ return 0;
}
static void limit_mt_destroy(const struct xt_mtdtor_param *par)