git://bbs.cooldavid.org / net-next-2.6.git / blame
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| 1da177e4 LT |
1 | #ifndef _NET_DN_ROUTE_H |
| 2 | #define _NET_DN_ROUTE_H | |
| 3 | ||
| 4 | /****************************************************************************** | |
| 5 | (c) 1995-1998 E.M. Serrat emserrat@geocities.com | |
| 6 | ||
| 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 | |
| 10 | any later version. | |
| 11 | ||
| 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 | *******************************************************************************/ | |
| 17 | ||
| dd0fc66f | 18 | extern struct sk_buff *dn_alloc_skb(struct sock *sk, int size, gfp_t pri); |
| 1da177e4 LT |
19 | extern int dn_route_output_sock(struct dst_entry **pprt, struct flowi *, struct sock *sk, int flags); |
| 20 | extern int dn_cache_dump(struct sk_buff *skb, struct netlink_callback *cb); | |
| 1da177e4 LT |
21 | extern void dn_rt_cache_flush(int delay); |
| 22 | ||
| 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 */ | |
| 30 | ||
| 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 */ | |
| 36 | ||
| 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 */ | |
| 48 | ||
| 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 */ | |
| 59 | ||
| 60 | /* | |
| 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. | |
| 66 | */ | |
| 67 | struct dn_route { | |
| 68 | union { | |
| 69 | struct dst_entry dst; | |
| 1da177e4 LT |
70 | } u; |
| 71 | ||
| 0c195c3f ED |
72 | struct flowi fl; |
| 73 | ||
| c4ea94ab SW |
74 | __le16 rt_saddr; |
| 75 | __le16 rt_daddr; | |
| 76 | __le16 rt_gateway; | |
| 77 | __le16 rt_local_src; /* Source used for forwarding packets */ | |
| 78 | __le16 rt_src_map; | |
| 79 | __le16 rt_dst_map; | |
| 1da177e4 LT |
80 | |
| 81 | unsigned rt_flags; | |
| 82 | unsigned rt_type; | |
| 1da177e4 LT |
83 | }; |
| 84 | ||
| 85 | extern void dn_route_init(void); | |
| 86 | extern void dn_route_cleanup(void); | |
| 87 | ||
| 88 | #include <net/sock.h> | |
| 89 | #include <linux/if_arp.h> | |
| 90 | ||
| 91 | static inline void dn_rt_send(struct sk_buff *skb) | |
| 92 | { | |
| 93 | dev_queue_xmit(skb); | |
| 94 | } | |
| 95 | ||
| 96 | static inline void dn_rt_finish_output(struct sk_buff *skb, char *dst, char *src) | |
| 97 | { | |
| 98 | struct net_device *dev = skb->dev; | |
| 99 | ||
| 100 | if ((dev->type != ARPHRD_ETHER) && (dev->type != ARPHRD_LOOPBACK)) | |
| 101 | dst = NULL; | |
| 102 | ||
| 103 | if (!dev->hard_header || (dev->hard_header(skb, dev, ETH_P_DNA_RT, | |
| 104 | dst, src, skb->len) >= 0)) | |
| 105 | dn_rt_send(skb); | |
| 106 | else | |
| 107 | kfree_skb(skb); | |
| 108 | } | |
| 109 | ||
| 110 | #endif /* _NET_DN_ROUTE_H */ |