* Based on net/netfilter/xt_tcpudp.c
*
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/types.h>
#include <linux/module.h>
#include <net/ip.h>
MODULE_DESCRIPTION("Xtables: IPv6 Mobility Header match");
MODULE_LICENSE("GPL");
-#ifdef DEBUG_IP_FIREWALL_USER
-#define duprintf(format, args...) printk(format , ## args)
-#else
-#define duprintf(format, args...)
-#endif
-
/* Returns 1 if the type is matched by the range, 0 otherwise */
static inline bool
type_match(u_int8_t min, u_int8_t max, u_int8_t type, bool invert)
return (type >= min && type <= max) ^ invert;
}
-static bool mh_mt6(const struct sk_buff *skb, const struct xt_match_param *par)
+static bool mh_mt6(const struct sk_buff *skb, struct xt_action_param *par)
{
struct ip6_mh _mh;
const struct ip6_mh *mh;
if (mh == NULL) {
/* We've been asked to examine this packet, and we
can't. Hence, no choice but to drop. */
- duprintf("Dropping evil MH tinygram.\n");
- *par->hotdrop = true;
+ pr_debug("Dropping evil MH tinygram.\n");
+ par->hotdrop = true;
return false;
}
if (mh->ip6mh_proto != IPPROTO_NONE) {
- duprintf("Dropping invalid MH Payload Proto: %u\n",
+ pr_debug("Dropping invalid MH Payload Proto: %u\n",
mh->ip6mh_proto);
- *par->hotdrop = true;
+ par->hotdrop = true;
return false;
}
!!(mhinfo->invflags & IP6T_MH_INV_TYPE));
}
-static bool mh_mt6_check(const struct xt_mtchk_param *par)
+static int mh_mt6_check(const struct xt_mtchk_param *par)
{
const struct ip6t_mh *mhinfo = par->matchinfo;
/* Must specify no unknown invflags */
- return !(mhinfo->invflags & ~IP6T_MH_INV_MASK);
+ return (mhinfo->invflags & ~IP6T_MH_INV_MASK) ? -EINVAL : 0;
}
static struct xt_match mh_mt6_reg __read_mostly = {