1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef __LINUX_DECNET_NETFILTER_H
3 #define __LINUX_DECNET_NETFILTER_H
5 /* DECnet-specific defines for netfilter.
6 * This file (C) Steve Whitehouse 1999 derived from the
7 * ipv4 netfilter header file which is
8 * (C)1998 Rusty Russell -- This code is GPL.
11 #include <linux/netfilter.h>
13 /* only for userspace compatibility */
15 #include <limits.h> /* for INT_MIN, INT_MAX */
19 #define NFC_DN_SRC 0x0001
20 /* Dest IP address. */
21 #define NFC_DN_DST 0x0002
23 #define NFC_DN_IF_IN 0x0004
25 #define NFC_DN_IF_OUT 0x0008
27 /* kernel define is in netfilter_defs.h */
28 #define NF_DN_NUMHOOKS 7
31 /* After promisc drops, checksum checks. */
32 #define NF_DN_PRE_ROUTING 0
33 /* If the packet is destined for this box. */
34 #define NF_DN_LOCAL_IN 1
35 /* If the packet is destined for another interface. */
36 #define NF_DN_FORWARD 2
37 /* Packets coming from a local process. */
38 #define NF_DN_LOCAL_OUT 3
39 /* Packets about to hit the wire. */
40 #define NF_DN_POST_ROUTING 4
41 /* Input Hello Packets */
43 /* Input Routing Packets */
46 enum nf_dn_hook_priorities {
47 NF_DN_PRI_FIRST = INT_MIN,
48 NF_DN_PRI_CONNTRACK = -200,
49 NF_DN_PRI_MANGLE = -150,
50 NF_DN_PRI_NAT_DST = -100,
52 NF_DN_PRI_NAT_SRC = 100,
53 NF_DN_PRI_DNRTMSG = 200,
54 NF_DN_PRI_LAST = INT_MAX,
61 #define NFDN_RTMSG(r) ((unsigned char *)(r) + NLMSG_ALIGN(sizeof(struct nf_dn_rtmsg)))
63 /* backwards compatibility for userspace */
64 #define DNRMG_L1_GROUP 0x01
65 #define DNRMG_L2_GROUP 0x02
69 #define DNRNG_NLGRP_NONE DNRNG_NLGRP_NONE
71 #define DNRNG_NLGRP_L1 DNRNG_NLGRP_L1
73 #define DNRNG_NLGRP_L2 DNRNG_NLGRP_L2
76 #define DNRNG_NLGRP_MAX (__DNRNG_NLGRP_MAX - 1)
78 #endif /*__LINUX_DECNET_NETFILTER_H*/