5 * Bart De Schuymer <bdschuym@pandora.be>
11 #include <linux/netfilter_bridge/ebtables.h>
12 #include <linux/netfilter_bridge/ebt_pkttype.h>
13 #include <linux/module.h>
15 static int ebt_filter_pkttype(const struct sk_buff
*skb
,
16 const struct net_device
*in
,
17 const struct net_device
*out
,
21 struct ebt_pkttype_info
*info
= (struct ebt_pkttype_info
*)data
;
23 return (skb
->pkt_type
!= info
->pkt_type
) ^ info
->invert
;
26 static int ebt_pkttype_check(const char *tablename
, unsigned int hookmask
,
27 const struct ebt_entry
*e
, void *data
, unsigned int datalen
)
29 struct ebt_pkttype_info
*info
= (struct ebt_pkttype_info
*)data
;
31 if (datalen
!= EBT_ALIGN(sizeof(struct ebt_pkttype_info
)))
33 if (info
->invert
!= 0 && info
->invert
!= 1)
35 /* Allow any pkt_type value */
39 static struct ebt_match filter_pkttype
=
41 .name
= EBT_PKTTYPE_MATCH
,
42 .match
= ebt_filter_pkttype
,
43 .check
= ebt_pkttype_check
,
47 static int __init
ebt_pkttype_init(void)
49 return ebt_register_match(&filter_pkttype
);
52 static void __exit
ebt_pkttype_fini(void)
54 ebt_unregister_match(&filter_pkttype
);
57 module_init(ebt_pkttype_init
);
58 module_exit(ebt_pkttype_fini
);
59 MODULE_LICENSE("GPL");