[PATCH] bcm43xx: Fix array overrun in bcm43xx_geo_init
[linux-2.6/kmemtrace.git] / include / linux / netfilter_bridge.h
bloba75b84bb9a884db6c71b4153613a8365b980a2a9
1 #ifndef __LINUX_BRIDGE_NETFILTER_H
2 #define __LINUX_BRIDGE_NETFILTER_H
4 /* bridge-specific defines for netfilter.
5 */
7 #include <linux/config.h>
8 #include <linux/netfilter.h>
9 #if defined(__KERNEL__) && defined(CONFIG_BRIDGE_NETFILTER)
10 #include <asm/atomic.h>
11 #include <linux/if_ether.h>
12 #endif
14 /* Bridge Hooks */
15 /* After promisc drops, checksum checks. */
16 #define NF_BR_PRE_ROUTING 0
17 /* If the packet is destined for this box. */
18 #define NF_BR_LOCAL_IN 1
19 /* If the packet is destined for another interface. */
20 #define NF_BR_FORWARD 2
21 /* Packets coming from a local process. */
22 #define NF_BR_LOCAL_OUT 3
23 /* Packets about to hit the wire. */
24 #define NF_BR_POST_ROUTING 4
25 /* Not really a hook, but used for the ebtables broute table */
26 #define NF_BR_BROUTING 5
27 #define NF_BR_NUMHOOKS 6
29 #ifdef __KERNEL__
31 enum nf_br_hook_priorities {
32 NF_BR_PRI_FIRST = INT_MIN,
33 NF_BR_PRI_NAT_DST_BRIDGED = -300,
34 NF_BR_PRI_FILTER_BRIDGED = -200,
35 NF_BR_PRI_BRNF = 0,
36 NF_BR_PRI_NAT_DST_OTHER = 100,
37 NF_BR_PRI_FILTER_OTHER = 200,
38 NF_BR_PRI_NAT_SRC = 300,
39 NF_BR_PRI_LAST = INT_MAX,
42 #ifdef CONFIG_BRIDGE_NETFILTER
44 #define BRNF_PKT_TYPE 0x01
45 #define BRNF_BRIDGED_DNAT 0x02
46 #define BRNF_DONT_TAKE_PARENT 0x04
47 #define BRNF_BRIDGED 0x08
48 #define BRNF_NF_BRIDGE_PREROUTING 0x10
51 /* Only used in br_forward.c */
52 static inline
53 void nf_bridge_maybe_copy_header(struct sk_buff *skb)
55 if (skb->nf_bridge) {
56 if (skb->protocol == __constant_htons(ETH_P_8021Q)) {
57 memcpy(skb->data - 18, skb->nf_bridge->data, 18);
58 skb_push(skb, 4);
59 } else
60 memcpy(skb->data - 16, skb->nf_bridge->data, 16);
64 /* This is called by the IP fragmenting code and it ensures there is
65 * enough room for the encapsulating header (if there is one). */
66 static inline
67 int nf_bridge_pad(struct sk_buff *skb)
69 if (skb->protocol == __constant_htons(ETH_P_IP))
70 return 0;
71 if (skb->nf_bridge) {
72 if (skb->protocol == __constant_htons(ETH_P_8021Q))
73 return 4;
75 return 0;
78 struct bridge_skb_cb {
79 union {
80 __u32 ipv4;
81 } daddr;
83 #endif /* CONFIG_BRIDGE_NETFILTER */
85 #endif /* __KERNEL__ */
86 #endif