Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Al Viro | dd0fc66 | 2005-10-07 07:46:04 +0100 | [diff] [blame] | 18 | extern struct sk_buff *dn_alloc_skb(struct sock *sk, int size, gfp_t pri); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
| 21 | extern int dn_cache_getroute(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); |
| 22 | extern void dn_rt_cache_flush(int delay); |
| 23 | |
| 24 | /* Masks for flags field */ |
| 25 | #define DN_RT_F_PID 0x07 /* Mask for packet type */ |
| 26 | #define DN_RT_F_PF 0x80 /* Padding Follows */ |
| 27 | #define DN_RT_F_VER 0x40 /* Version =0 discard packet if ==1 */ |
| 28 | #define DN_RT_F_IE 0x20 /* Intra Ethernet, Reserved in short pkt */ |
| 29 | #define DN_RT_F_RTS 0x10 /* Packet is being returned to sender */ |
| 30 | #define DN_RT_F_RQR 0x08 /* Return packet to sender upon non-delivery */ |
| 31 | |
| 32 | /* Mask for types of routing packets */ |
| 33 | #define DN_RT_PKT_MSK 0x06 |
| 34 | /* Types of routing packets */ |
| 35 | #define DN_RT_PKT_SHORT 0x02 /* Short routing packet */ |
| 36 | #define DN_RT_PKT_LONG 0x06 /* Long routing packet */ |
| 37 | |
| 38 | /* Mask for control/routing selection */ |
| 39 | #define DN_RT_PKT_CNTL 0x01 /* Set to 1 if a control packet */ |
| 40 | /* Types of control packets */ |
| 41 | #define DN_RT_CNTL_MSK 0x0f /* Mask for control packets */ |
| 42 | #define DN_RT_PKT_INIT 0x01 /* Initialisation packet */ |
| 43 | #define DN_RT_PKT_VERI 0x03 /* Verification Message */ |
| 44 | #define DN_RT_PKT_HELO 0x05 /* Hello and Test Message */ |
| 45 | #define DN_RT_PKT_L1RT 0x07 /* Level 1 Routing Message */ |
| 46 | #define DN_RT_PKT_L2RT 0x09 /* Level 2 Routing Message */ |
| 47 | #define DN_RT_PKT_ERTH 0x0b /* Ethernet Router Hello */ |
| 48 | #define DN_RT_PKT_EEDH 0x0d /* Ethernet EndNode Hello */ |
| 49 | |
| 50 | /* Values for info field in hello message */ |
| 51 | #define DN_RT_INFO_TYPE 0x03 /* Type mask */ |
| 52 | #define DN_RT_INFO_L1RT 0x02 /* L1 Router */ |
| 53 | #define DN_RT_INFO_L2RT 0x01 /* L2 Router */ |
| 54 | #define DN_RT_INFO_ENDN 0x03 /* EndNode */ |
| 55 | #define DN_RT_INFO_VERI 0x04 /* Verification Reqd. */ |
| 56 | #define DN_RT_INFO_RJCT 0x08 /* Reject Flag, Reserved */ |
| 57 | #define DN_RT_INFO_VFLD 0x10 /* Verification Failed, Reserved */ |
| 58 | #define DN_RT_INFO_NOML 0x20 /* No Multicast traffic accepted */ |
| 59 | #define DN_RT_INFO_BLKR 0x40 /* Blocking Requested */ |
| 60 | |
| 61 | /* |
| 62 | * The fl structure is what we used to look up the route. |
| 63 | * The rt_saddr & rt_daddr entries are the same as key.saddr & key.daddr |
| 64 | * except for local input routes, where the rt_saddr = fl.fld_dst and |
| 65 | * rt_daddr = fl.fld_src to allow the route to be used for returning |
| 66 | * packets to the originating host. |
| 67 | */ |
| 68 | struct dn_route { |
| 69 | union { |
| 70 | struct dst_entry dst; |
| 71 | struct dn_route *rt_next; |
| 72 | } u; |
| 73 | |
| 74 | __u16 rt_saddr; |
| 75 | __u16 rt_daddr; |
| 76 | __u16 rt_gateway; |
| 77 | __u16 rt_local_src; /* Source used for forwarding packets */ |
| 78 | __u16 rt_src_map; |
| 79 | __u16 rt_dst_map; |
| 80 | |
| 81 | unsigned rt_flags; |
| 82 | unsigned rt_type; |
| 83 | |
| 84 | struct flowi fl; |
| 85 | }; |
| 86 | |
| 87 | extern void dn_route_init(void); |
| 88 | extern void dn_route_cleanup(void); |
| 89 | |
| 90 | #include <net/sock.h> |
| 91 | #include <linux/if_arp.h> |
| 92 | |
| 93 | static inline void dn_rt_send(struct sk_buff *skb) |
| 94 | { |
| 95 | dev_queue_xmit(skb); |
| 96 | } |
| 97 | |
| 98 | static inline void dn_rt_finish_output(struct sk_buff *skb, char *dst, char *src) |
| 99 | { |
| 100 | struct net_device *dev = skb->dev; |
| 101 | |
| 102 | if ((dev->type != ARPHRD_ETHER) && (dev->type != ARPHRD_LOOPBACK)) |
| 103 | dst = NULL; |
| 104 | |
| 105 | if (!dev->hard_header || (dev->hard_header(skb, dev, ETH_P_DNA_RT, |
| 106 | dst, src, skb->len) >= 0)) |
| 107 | dn_rt_send(skb); |
| 108 | else |
| 109 | kfree_skb(skb); |
| 110 | } |
| 111 | |
| 112 | #endif /* _NET_DN_ROUTE_H */ |