[NETFILTER]: bridge-netfilter: remove deferred hooks
[linux-2.6.git] / include / linux / netfilter_bridge.h
1 #ifndef __LINUX_BRIDGE_NETFILTER_H
2 #define __LINUX_BRIDGE_NETFILTER_H
3
4 /* bridge-specific defines for netfilter. 
5  */
6
7 #include <linux/netfilter.h>
8 #include <linux/if_ether.h>
9 #include <linux/if_vlan.h>
10
11 /* Bridge Hooks */
12 /* After promisc drops, checksum checks. */
13 #define NF_BR_PRE_ROUTING       0
14 /* If the packet is destined for this box. */
15 #define NF_BR_LOCAL_IN          1
16 /* If the packet is destined for another interface. */
17 #define NF_BR_FORWARD           2
18 /* Packets coming from a local process. */
19 #define NF_BR_LOCAL_OUT         3
20 /* Packets about to hit the wire. */
21 #define NF_BR_POST_ROUTING      4
22 /* Not really a hook, but used for the ebtables broute table */
23 #define NF_BR_BROUTING          5
24 #define NF_BR_NUMHOOKS          6
25
26 #ifdef __KERNEL__
27
28 enum nf_br_hook_priorities {
29         NF_BR_PRI_FIRST = INT_MIN,
30         NF_BR_PRI_NAT_DST_BRIDGED = -300,
31         NF_BR_PRI_FILTER_BRIDGED = -200,
32         NF_BR_PRI_BRNF = 0,
33         NF_BR_PRI_NAT_DST_OTHER = 100,
34         NF_BR_PRI_FILTER_OTHER = 200,
35         NF_BR_PRI_NAT_SRC = 300,
36         NF_BR_PRI_LAST = INT_MAX,
37 };
38
39 #ifdef CONFIG_BRIDGE_NETFILTER
40
41 #define BRNF_PKT_TYPE                   0x01
42 #define BRNF_BRIDGED_DNAT               0x02
43 #define BRNF_DONT_TAKE_PARENT           0x04
44 #define BRNF_BRIDGED                    0x08
45 #define BRNF_NF_BRIDGE_PREROUTING       0x10
46
47
48 /* Only used in br_forward.c */
49 extern int nf_bridge_copy_header(struct sk_buff *skb);
50 static inline int nf_bridge_maybe_copy_header(struct sk_buff *skb)
51 {
52         if (skb->nf_bridge)
53                 return nf_bridge_copy_header(skb);
54         return 0;
55 }
56
57 /* This is called by the IP fragmenting code and it ensures there is
58  * enough room for the encapsulating header (if there is one). */
59 static inline int nf_bridge_pad(const struct sk_buff *skb)
60 {
61         return (skb->nf_bridge && skb->protocol == htons(ETH_P_8021Q))
62                 ? VLAN_HLEN : 0;
63 }
64
65 struct bridge_skb_cb {
66         union {
67                 __be32 ipv4;
68         } daddr;
69 };
70
71 #else
72 #define nf_bridge_maybe_copy_header(skb)        (0)
73 #define nf_bridge_pad(skb)                      (0)
74 #endif /* CONFIG_BRIDGE_NETFILTER */
75
76 #endif /* __KERNEL__ */
77 #endif