1 #ifndef _NET_DN_ROUTE_H
2 #define _NET_DN_ROUTE_H
4 /******************************************************************************
5 (c) 1995-1998 E.M. Serrat emserrat@geocities.com
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16 *******************************************************************************/
18 extern struct sk_buff
*dn_alloc_skb(struct sock
*sk
, int size
, gfp_t pri
);
19 extern int dn_route_output_sock(struct dst_entry __rcu
**pprt
, struct flowidn
*, struct sock
*sk
, int flags
);
20 extern int dn_cache_dump(struct sk_buff
*skb
, struct netlink_callback
*cb
);
21 extern void dn_rt_cache_flush(int delay
);
23 /* Masks for flags field */
24 #define DN_RT_F_PID 0x07 /* Mask for packet type */
25 #define DN_RT_F_PF 0x80 /* Padding Follows */
26 #define DN_RT_F_VER 0x40 /* Version =0 discard packet if ==1 */
27 #define DN_RT_F_IE 0x20 /* Intra Ethernet, Reserved in short pkt */
28 #define DN_RT_F_RTS 0x10 /* Packet is being returned to sender */
29 #define DN_RT_F_RQR 0x08 /* Return packet to sender upon non-delivery */
31 /* Mask for types of routing packets */
32 #define DN_RT_PKT_MSK 0x06
33 /* Types of routing packets */
34 #define DN_RT_PKT_SHORT 0x02 /* Short routing packet */
35 #define DN_RT_PKT_LONG 0x06 /* Long routing packet */
37 /* Mask for control/routing selection */
38 #define DN_RT_PKT_CNTL 0x01 /* Set to 1 if a control packet */
39 /* Types of control packets */
40 #define DN_RT_CNTL_MSK 0x0f /* Mask for control packets */
41 #define DN_RT_PKT_INIT 0x01 /* Initialisation packet */
42 #define DN_RT_PKT_VERI 0x03 /* Verification Message */
43 #define DN_RT_PKT_HELO 0x05 /* Hello and Test Message */
44 #define DN_RT_PKT_L1RT 0x07 /* Level 1 Routing Message */
45 #define DN_RT_PKT_L2RT 0x09 /* Level 2 Routing Message */
46 #define DN_RT_PKT_ERTH 0x0b /* Ethernet Router Hello */
47 #define DN_RT_PKT_EEDH 0x0d /* Ethernet EndNode Hello */
49 /* Values for info field in hello message */
50 #define DN_RT_INFO_TYPE 0x03 /* Type mask */
51 #define DN_RT_INFO_L1RT 0x02 /* L1 Router */
52 #define DN_RT_INFO_L2RT 0x01 /* L2 Router */
53 #define DN_RT_INFO_ENDN 0x03 /* EndNode */
54 #define DN_RT_INFO_VERI 0x04 /* Verification Reqd. */
55 #define DN_RT_INFO_RJCT 0x08 /* Reject Flag, Reserved */
56 #define DN_RT_INFO_VFLD 0x10 /* Verification Failed, Reserved */
57 #define DN_RT_INFO_NOML 0x20 /* No Multicast traffic accepted */
58 #define DN_RT_INFO_BLKR 0x40 /* Blocking Requested */
61 * The fl structure is what we used to look up the route.
62 * The rt_saddr & rt_daddr entries are the same as key.saddr & key.daddr
63 * except for local input routes, where the rt_saddr = fl.fld_dst and
64 * rt_daddr = fl.fld_src to allow the route to be used for returning
65 * packets to the originating host.
77 __le16 rt_local_src
; /* Source used for forwarding packets */
81 unsigned int rt_flags
;
85 static inline bool dn_is_input_route(struct dn_route
*rt
)
87 return rt
->fld
.flowidn_iif
!= 0;
90 static inline bool dn_is_output_route(struct dn_route
*rt
)
92 return rt
->fld
.flowidn_iif
== 0;
95 extern void dn_route_init(void);
96 extern void dn_route_cleanup(void);
99 #include <linux/if_arp.h>
101 static inline void dn_rt_send(struct sk_buff
*skb
)
106 static inline void dn_rt_finish_output(struct sk_buff
*skb
, char *dst
, char *src
)
108 struct net_device
*dev
= skb
->dev
;
110 if ((dev
->type
!= ARPHRD_ETHER
) && (dev
->type
!= ARPHRD_LOOPBACK
))
113 if (dev_hard_header(skb
, dev
, ETH_P_DNA_RT
, dst
, src
, skb
->len
) >= 0)
119 #endif /* _NET_DN_ROUTE_H */
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