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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 
     14 #include <limits.h> /* for INT_MIN, INT_MAX */
     15 
     16 /* IP Cache bits. */
     17 /* Src IP address. */
     18 #define NFC_DN_SRC		0x0001
     19 /* Dest IP address. */
     20 #define NFC_DN_DST		0x0002
     21 /* Input device. */
     22 #define NFC_DN_IF_IN		0x0004
     23 /* Output device. */
     24 #define NFC_DN_IF_OUT		0x0008
     25 
     26 /* DECnet Hooks */
     27 /* After promisc drops, checksum checks. */
     28 #define NF_DN_PRE_ROUTING	0
     29 /* If the packet is destined for this box. */
     30 #define NF_DN_LOCAL_IN		1
     31 /* If the packet is destined for another interface. */
     32 #define NF_DN_FORWARD		2
     33 /* Packets coming from a local process. */
     34 #define NF_DN_LOCAL_OUT		3
     35 /* Packets about to hit the wire. */
     36 #define NF_DN_POST_ROUTING	4
     37 /* Input Hello Packets */
     38 #define NF_DN_HELLO		5
     39 /* Input Routing Packets */
     40 #define NF_DN_ROUTE		6
     41 #define NF_DN_NUMHOOKS		7
     42 
     43 enum nf_dn_hook_priorities {
     44 	NF_DN_PRI_FIRST = INT_MIN,
     45 	NF_DN_PRI_CONNTRACK = -200,
     46 	NF_DN_PRI_MANGLE = -150,
     47 	NF_DN_PRI_NAT_DST = -100,
     48 	NF_DN_PRI_FILTER = 0,
     49 	NF_DN_PRI_NAT_SRC = 100,
     50 	NF_DN_PRI_DNRTMSG = 200,
     51 	NF_DN_PRI_LAST = INT_MAX,
     52 };
     53 
     54 struct nf_dn_rtmsg {
     55 	int nfdn_ifindex;
     56 };
     57 
     58 #define NFDN_RTMSG(r) ((unsigned char *)(r) + NLMSG_ALIGN(sizeof(struct nf_dn_rtmsg)))
     59 
     60 /* backwards compatibility for userspace */
     61 #define DNRMG_L1_GROUP 0x01
     62 #define DNRMG_L2_GROUP 0x02
     63 
     64 enum {
     65 	DNRNG_NLGRP_NONE,
     66 #define DNRNG_NLGRP_NONE	DNRNG_NLGRP_NONE
     67 	DNRNG_NLGRP_L1,
     68 #define DNRNG_NLGRP_L1		DNRNG_NLGRP_L1
     69 	DNRNG_NLGRP_L2,
     70 #define DNRNG_NLGRP_L2		DNRNG_NLGRP_L2
     71 	__DNRNG_NLGRP_MAX
     72 };
     73 #define DNRNG_NLGRP_MAX	(__DNRNG_NLGRP_MAX - 1)
     74 
     75 #endif /*__LINUX_DECNET_NETFILTER_H*/
     76