5 * Bart De Schuymer <bdschuym@pandora.be>
11 #include <linux/netfilter_bridge/ebtables.h>
12 #include <linux/netfilter_bridge/ebt_mark_m.h>
13 #include <linux/module.h>
15 static int ebt_filter_mark(const struct sk_buff
*skb
,
16 const struct net_device
*in
, const struct net_device
*out
, const void *data
,
19 struct ebt_mark_m_info
*info
= (struct ebt_mark_m_info
*) data
;
21 if (info
->bitmask
& EBT_MARK_OR
)
22 return !(!!(skb
->mark
& info
->mask
) ^ info
->invert
);
23 return !(((skb
->mark
& info
->mask
) == info
->mark
) ^ info
->invert
);
26 static int ebt_mark_check(const char *tablename
, unsigned int hookmask
,
27 const struct ebt_entry
*e
, void *data
, unsigned int datalen
)
29 struct ebt_mark_m_info
*info
= (struct ebt_mark_m_info
*) data
;
31 if (datalen
!= EBT_ALIGN(sizeof(struct ebt_mark_m_info
)))
33 if (info
->bitmask
& ~EBT_MARK_MASK
)
35 if ((info
->bitmask
& EBT_MARK_OR
) && (info
->bitmask
& EBT_MARK_AND
))
42 static struct ebt_match filter_mark
=
44 .name
= EBT_MARK_MATCH
,
45 .match
= ebt_filter_mark
,
46 .check
= ebt_mark_check
,
50 static int __init
ebt_mark_m_init(void)
52 return ebt_register_match(&filter_mark
);
55 static void __exit
ebt_mark_m_fini(void)
57 ebt_unregister_match(&filter_mark
);
60 module_init(ebt_mark_m_init
);
61 module_exit(ebt_mark_m_fini
);
62 MODULE_LICENSE("GPL");