#ifndef _NET_DN_ROUTE_H#define _NET_DN_ROUTE_H /******************************************************************************    (c) 1995-1998 E.M. Serrat		emserrat@geocities.com        This program is free software; you can redistribute it and/or modify    it under the terms of the GNU General Public License as published by    the Free Software Foundation; either version 2 of the License, or    any later version.     This program is distributed in the hope that it will be useful,    but WITHOUT ANY WARRANTY; without even the implied warranty of    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the    GNU General Public License for more details.*******************************************************************************/ extern struct sk_buff *dn_alloc_skb(struct sock *sk, int size, gfp_t pri);extern int dn_route_output_sock(struct dst_entry **pprt, struct flowi *, struct sock *sk, int flags);extern int dn_cache_dump(struct sk_buff *skb, struct netlink_callback *cb);extern int dn_cache_getroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg);extern void dn_rt_cache_flush(int delay); /* Masks for flags field */#define DN_RT_F_PID 0x07 /* Mask for packet type                      */#define DN_RT_F_PF  0x80 /* Padding Follows                           */#define DN_RT_F_VER 0x40 /* Version =0 discard packet if ==1          */#define DN_RT_F_IE  0x20 /* Intra Ethernet, Reserved in short pkt     */#define DN_RT_F_RTS 0x10 /* Packet is being returned to sender        */#define DN_RT_F_RQR 0x08 /* Return packet to sender upon non-delivery */ /* Mask for types of routing packets */#define DN_RT_PKT_MSK   0x06/* Types of routing packets */#define DN_RT_PKT_SHORT 0x02 /* Short routing packet */#define DN_RT_PKT_LONG  0x06 /* Long routing packet  */ /* Mask for control/routing selection */#define DN_RT_PKT_CNTL  0x01 /* Set to 1 if a control packet  *//* Types of control packets */#define DN_RT_CNTL_MSK  0x0f /* Mask for control packets      */#define DN_RT_PKT_INIT  0x01 /* Initialisation packet         */#define DN_RT_PKT_VERI  0x03 /* Verification Message          */#define DN_RT_PKT_HELO  0x05 /* Hello and Test Message        */#define DN_RT_PKT_L1RT  0x07 /* Level 1 Routing Message       */#define DN_RT_PKT_L2RT  0x09 /* Level 2 Routing Message       */#define DN_RT_PKT_ERTH  0x0b /* Ethernet Router Hello         */#define DN_RT_PKT_EEDH  0x0d /* Ethernet EndNode Hello        */ /* Values for info field in hello message */#define DN_RT_INFO_TYPE 0x03 /* Type mask                     */#define DN_RT_INFO_L1RT 0x02 /* L1 Router                     */#define DN_RT_INFO_L2RT 0x01 /* L2 Router                     */#define DN_RT_INFO_ENDN 0x03 /* EndNode                       */#define DN_RT_INFO_VERI 0x04 /* Verification Reqd.            */#define DN_RT_INFO_RJCT 0x08 /* Reject Flag, Reserved         */#define DN_RT_INFO_VFLD 0x10 /* Verification Failed, Reserved */#define DN_RT_INFO_NOML 0x20 /* No Multicast traffic accepted */#define DN_RT_INFO_BLKR 0x40 /* Blocking Requested            */ /* * The fl structure is what we used to look up the route. * The rt_saddr & rt_daddr entries are the same as key.saddr & key.daddr * except for local input routes, where the rt_saddr = fl.fld_dst and * rt_daddr = fl.fld_src to allow the route to be used for returning * packets to the originating host. */struct dn_route {	union {		struct dst_entry dst;		struct dn_route *rt_next;	} u; 	__le16 rt_saddr;	__le16 rt_daddr;	__le16 rt_gateway;	__le16 rt_local_src;	/* Source used for forwarding packets */	__le16 rt_src_map;	__le16 rt_dst_map; 	unsigned rt_flags;	unsigned rt_type; 	struct flowi fl;}; extern void dn_route_init(void);extern void dn_route_cleanup(void); #include <net/sock.h>#include <linux/if_arp.h> static inline void dn_rt_send(struct sk_buff *skb){	dev_queue_xmit(skb);} static inline void dn_rt_finish_output(struct sk_buff *skb, char *dst, char *src){	struct net_device *dev = skb->dev; 	if ((dev->type != ARPHRD_ETHER) && (dev->type != ARPHRD_LOOPBACK))		dst = NULL; 	if (!dev->hard_header || (dev->hard_header(skb, dev, ETH_P_DNA_RT,			dst, src, skb->len) >= 0))		dn_rt_send(skb);	else		kfree_skb(skb);} #endif /* _NET_DN_ROUTE_H */