| #ifndef __LINUX_BRIDGE_NETFILTER_H |
| #define __LINUX_BRIDGE_NETFILTER_H |
| |
| /* bridge-specific defines for netfilter. |
| */ |
| |
| #include <linux/config.h> |
| #include <linux/netfilter.h> |
| #include <asm/atomic.h> |
| |
| /* Bridge Hooks */ |
| /* After promisc drops, checksum checks. */ |
| #define NF_BR_PRE_ROUTING 0 |
| /* If the packet is destined for this box. */ |
| #define NF_BR_LOCAL_IN 1 |
| /* If the packet is destined for another interface. */ |
| #define NF_BR_FORWARD 2 |
| /* Packets coming from a local process. */ |
| #define NF_BR_LOCAL_OUT 3 |
| /* Packets about to hit the wire. */ |
| #define NF_BR_POST_ROUTING 4 |
| /* Not really a hook, but used for the ebtables broute table */ |
| #define NF_BR_BROUTING 5 |
| #define NF_BR_NUMHOOKS 6 |
| |
| #define BRNF_PKT_TYPE 0x01 |
| #define BRNF_BRIDGED_DNAT 0x02 |
| #define BRNF_DONT_TAKE_PARENT 0x04 |
| #define BRNF_COPY_HEADER 0x08 |
| |
| enum nf_br_hook_priorities { |
| NF_BR_PRI_FIRST = INT_MIN, |
| NF_BR_PRI_NAT_DST_BRIDGED = -300, |
| NF_BR_PRI_FILTER_BRIDGED = -200, |
| NF_BR_PRI_BRNF = 0, |
| NF_BR_PRI_NAT_DST_OTHER = 100, |
| NF_BR_PRI_FILTER_OTHER = 200, |
| NF_BR_PRI_NAT_SRC = 300, |
| NF_BR_PRI_LAST = INT_MAX, |
| }; |
| |
| /* Used in br_netfilter.c */ |
| static inline |
| struct nf_bridge_info *nf_bridge_alloc(struct sk_buff *skb) |
| { |
| struct nf_bridge_info **nf_bridge = &(skb->nf_bridge); |
| |
| if ((*nf_bridge = kmalloc(sizeof(**nf_bridge), GFP_ATOMIC)) != NULL) { |
| atomic_set(&(*nf_bridge)->use, 1); |
| (*nf_bridge)->mask = 0; |
| (*nf_bridge)->physindev = (*nf_bridge)->physoutdev = NULL; |
| } |
| |
| return *nf_bridge; |
| } |
| |
| struct bridge_skb_cb { |
| union { |
| __u32 ipv4; |
| } daddr; |
| }; |
| |
| #endif |