git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * ebt_mark_m | |
| 3 | * | |
| 4 | * Authors: | |
| 5 | * Bart De Schuymer <bdschuym@pandora.be> | |
| 6 | * | |
| 7 | * July, 2002 | |
| 8 | * | |
| 9 | */ | |
| 10 | ||
| 11 | #include <linux/netfilter_bridge/ebtables.h> | |
| 12 | #include <linux/netfilter_bridge/ebt_mark_m.h> | |
| 13 | #include <linux/module.h> | |
| 14 | ||
| 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, | |
| 17 | unsigned int datalen) | |
| 18 | { | |
| abfdf1c4 | 19 | const struct ebt_mark_m_info *info = data; |
| 1da177e4 LT |
20 | |
| 21 | if (info->bitmask & EBT_MARK_OR) | |
| 82e91ffe TG |
22 | return !(!!(skb->mark & info->mask) ^ info->invert); |
| 23 | return !(((skb->mark & info->mask) == info->mark) ^ info->invert); | |
| 1da177e4 LT |
24 | } |
| 25 | ||
| 26 | static int ebt_mark_check(const char *tablename, unsigned int hookmask, | |
| 27 | const struct ebt_entry *e, void *data, unsigned int datalen) | |
| 28 | { | |
| abfdf1c4 | 29 | const struct ebt_mark_m_info *info = data; |
| 1da177e4 LT |
30 | |
| 31 | if (datalen != EBT_ALIGN(sizeof(struct ebt_mark_m_info))) | |
| 32 | return -EINVAL; | |
| 33 | if (info->bitmask & ~EBT_MARK_MASK) | |
| 34 | return -EINVAL; | |
| 35 | if ((info->bitmask & EBT_MARK_OR) && (info->bitmask & EBT_MARK_AND)) | |
| 36 | return -EINVAL; | |
| 37 | if (!info->bitmask) | |
| 38 | return -EINVAL; | |
| 39 | return 0; | |
| 40 | } | |
| 41 | ||
| 42 | static struct ebt_match filter_mark = | |
| 43 | { | |
| 44 | .name = EBT_MARK_MATCH, | |
| 45 | .match = ebt_filter_mark, | |
| 46 | .check = ebt_mark_check, | |
| 47 | .me = THIS_MODULE, | |
| 48 | }; | |
| 49 | ||
| 65b4b4e8 | 50 | static int __init ebt_mark_m_init(void) |
| 1da177e4 LT |
51 | { |
| 52 | return ebt_register_match(&filter_mark); | |
| 53 | } | |
| 54 | ||
| 65b4b4e8 | 55 | static void __exit ebt_mark_m_fini(void) |
| 1da177e4 LT |
56 | { |
| 57 | ebt_unregister_match(&filter_mark); | |
| 58 | } | |
| 59 | ||
| 65b4b4e8 AM |
60 | module_init(ebt_mark_m_init); |
| 61 | module_exit(ebt_mark_m_fini); | |
| 1da177e4 | 62 | MODULE_LICENSE("GPL"); |