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      1 #ifndef __LINUX_DECNET_NETFILTER_H
      2 #define __LINUX_DECNET_NETFILTER_H
      3 
      4 /* DECnet-specific defines for netfilter.
      5  * This file (C) Steve Whitehouse 1999 derived from the
      6  * ipv4 netfilter header file which is
      7  * (C)1998 Rusty Russell -- This code is GPL.
      8  */
      9 
     10 #include <linux/netfilter.h>
     11 
     12 /* only for userspace compatibility */
     13 /* IP Cache bits. */
     14 /* Src IP address. */
     15 #define NFC_DN_SRC		0x0001
     16 /* Dest IP address. */
     17 #define NFC_DN_DST		0x0002
     18 /* Input device. */
     19 #define NFC_DN_IF_IN		0x0004
     20 /* Output device. */
     21 #define NFC_DN_IF_OUT		0x0008
     22 
     23 /* DECnet Hooks */
     24 /* After promisc drops, checksum checks. */
     25 #define NF_DN_PRE_ROUTING	0
     26 /* If the packet is destined for this box. */
     27 #define NF_DN_LOCAL_IN		1
     28 /* If the packet is destined for another interface. */
     29 #define NF_DN_FORWARD		2
     30 /* Packets coming from a local process. */
     31 #define NF_DN_LOCAL_OUT		3
     32 /* Packets about to hit the wire. */
     33 #define NF_DN_POST_ROUTING	4
     34 /* Input Hello Packets */
     35 #define NF_DN_HELLO		5
     36 /* Input Routing Packets */
     37 #define NF_DN_ROUTE		6
     38 #define NF_DN_NUMHOOKS		7
     39 
     40 enum nf_dn_hook_priorities {
     41 	NF_DN_PRI_FIRST = INT_MIN,
     42 	NF_DN_PRI_CONNTRACK = -200,
     43 	NF_DN_PRI_MANGLE = -150,
     44 	NF_DN_PRI_NAT_DST = -100,
     45 	NF_DN_PRI_FILTER = 0,
     46 	NF_DN_PRI_NAT_SRC = 100,
     47 	NF_DN_PRI_DNRTMSG = 200,
     48 	NF_DN_PRI_LAST = INT_MAX,
     49 };
     50 
     51 struct nf_dn_rtmsg {
     52 	int nfdn_ifindex;
     53 };
     54 
     55 #define NFDN_RTMSG(r) ((unsigned char *)(r) + NLMSG_ALIGN(sizeof(struct nf_dn_rtmsg)))
     56 
     57 /* backwards compatibility for userspace */
     58 #define DNRMG_L1_GROUP 0x01
     59 #define DNRMG_L2_GROUP 0x02
     60 
     61 enum {
     62 	DNRNG_NLGRP_NONE,
     63 #define DNRNG_NLGRP_NONE	DNRNG_NLGRP_NONE
     64 	DNRNG_NLGRP_L1,
     65 #define DNRNG_NLGRP_L1		DNRNG_NLGRP_L1
     66 	DNRNG_NLGRP_L2,
     67 #define DNRNG_NLGRP_L2		DNRNG_NLGRP_L2
     68 	__DNRNG_NLGRP_MAX
     69 };
     70 #define DNRNG_NLGRP_MAX	(__DNRNG_NLGRP_MAX - 1)
     71 
     72 #endif /*__LINUX_DECNET_NETFILTER_H*/
     73