netfilter_bridge.h

 1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 2#ifndef _UAPI__LINUX_BRIDGE_NETFILTER_H
 3#define _UAPI__LINUX_BRIDGE_NETFILTER_H
 4
 5/* bridge-specific defines for netfilter. 
 6 */
 7
 8#ifndef __KERNEL__
 9#include <netinet/if_ether.h>	/* for __UAPI_DEF_ETHHDR if defined */
10#endif
11
12#include <linux/in.h>
13#include <linux/netfilter.h>
14#include <linux/if_ether.h>
15#include <linux/if_vlan.h>
16#include <linux/if_pppox.h>
17
18#ifndef __KERNEL__
19#include <limits.h> /* for INT_MIN, INT_MAX */
20#endif
21
22/* Bridge Hooks */
23/* After promisc drops, checksum checks. */
24#define NF_BR_PRE_ROUTING	0
25/* If the packet is destined for this box. */
26#define NF_BR_LOCAL_IN		1
27/* If the packet is destined for another interface. */
28#define NF_BR_FORWARD		2
29/* Packets coming from a local process. */
30#define NF_BR_LOCAL_OUT		3
31/* Packets about to hit the wire. */
32#define NF_BR_POST_ROUTING	4
33/* Not really a hook, but used for the ebtables broute table */
34#define NF_BR_BROUTING		5
35#define NF_BR_NUMHOOKS		6
36
37enum nf_br_hook_priorities {
38	NF_BR_PRI_FIRST = INT_MIN,
39	NF_BR_PRI_NAT_DST_BRIDGED = -300,
40	NF_BR_PRI_FILTER_BRIDGED = -200,
41	NF_BR_PRI_BRNF = 0,
42	NF_BR_PRI_NAT_DST_OTHER = 100,
43	NF_BR_PRI_FILTER_OTHER = 200,
44	NF_BR_PRI_NAT_SRC = 300,
45	NF_BR_PRI_LAST = INT_MAX,
46};
47
48#endif /* _UAPI__LINUX_BRIDGE_NETFILTER_H */