projects / deliverable / linux.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 | */ | |
| 18219d3f JE |
10 | #include <linux/module.h> |
| 11 | #include <linux/netfilter/x_tables.h> | |
| 1da177e4 LT |
12 | #include <linux/netfilter_bridge/ebtables.h> |
| 13 | #include <linux/netfilter_bridge/ebt_mark_m.h> | |
| 1da177e4 | 14 | |
| 2d06d4a5 | 15 | static bool |
| f7108a20 | 16 | ebt_mark_mt(const struct sk_buff *skb, const struct xt_match_param *par) |
| 1da177e4 | 17 | { |
| f7108a20 | 18 | const struct ebt_mark_m_info *info = par->matchinfo; |
| 1da177e4 LT |
19 | |
| 20 | if (info->bitmask & EBT_MARK_OR) | |
| 8cc784ee JE |
21 | return !!(skb->mark & info->mask) ^ info->invert; |
| 22 | return ((skb->mark & info->mask) == info->mark) ^ info->invert; | |
| 1da177e4 LT |
23 | } |
| 24 | ||
| 2d06d4a5 JE |
25 | static bool |
| 26 | ebt_mark_mt_check(const char *table, const void *e, | |
| 27 | const struct xt_match *match, void *data, | |
| 28 | unsigned int hook_mask) | |
| 1da177e4 | 29 | { |
| abfdf1c4 | 30 | const struct ebt_mark_m_info *info = data; |
| 1da177e4 | 31 | |
| 1da177e4 | 32 | if (info->bitmask & ~EBT_MARK_MASK) |
| 19eda879 | 33 | return false; |
| 1da177e4 | 34 | if ((info->bitmask & EBT_MARK_OR) && (info->bitmask & EBT_MARK_AND)) |
| 19eda879 | 35 | return false; |
| 1da177e4 | 36 | if (!info->bitmask) |
| 19eda879 JE |
37 | return false; |
| 38 | return true; | |
| 1da177e4 LT |
39 | } |
| 40 | ||
| 043ef46c JE |
41 | static struct xt_match ebt_mark_mt_reg __read_mostly = { |
| 42 | .name = "mark_m", | |
| 001a18d3 JE |
43 | .revision = 0, |
| 44 | .family = NFPROTO_BRIDGE, | |
| 2d06d4a5 JE |
45 | .match = ebt_mark_mt, |
| 46 | .checkentry = ebt_mark_mt_check, | |
| 18219d3f | 47 | .matchsize = XT_ALIGN(sizeof(struct ebt_mark_m_info)), |
| 1da177e4 LT |
48 | .me = THIS_MODULE, |
| 49 | }; | |
| 50 | ||
| 65b4b4e8 | 51 | static int __init ebt_mark_m_init(void) |
| 1da177e4 | 52 | { |
| 043ef46c | 53 | return xt_register_match(&ebt_mark_mt_reg); |
| 1da177e4 LT |
54 | } |
| 55 | ||
| 65b4b4e8 | 56 | static void __exit ebt_mark_m_fini(void) |
| 1da177e4 | 57 | { |
| 043ef46c | 58 | xt_unregister_match(&ebt_mark_mt_reg); |
| 1da177e4 LT |
59 | } |
| 60 | ||
| 65b4b4e8 AM |
61 | module_init(ebt_mark_m_init); |
| 62 | module_exit(ebt_mark_m_fini); | |
| f776c4cd | 63 | MODULE_DESCRIPTION("Ebtables: Packet mark match"); |
| 1da177e4 | 64 | MODULE_LICENSE("GPL"); |