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