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-rw-r--r--include/net/dn_dev.h194
1 files changed, 194 insertions, 0 deletions
diff --git a/include/net/dn_dev.h b/include/net/dn_dev.h
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+++ b/include/net/dn_dev.h
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1#ifndef _NET_DN_DEV_H
2#define _NET_DN_DEV_H
3
4
5struct dn_dev;
6
7struct dn_ifaddr {
8 struct dn_ifaddr *ifa_next;
9 struct dn_dev *ifa_dev;
10 dn_address ifa_local;
11 dn_address ifa_address;
12 unsigned char ifa_flags;
13 unsigned char ifa_scope;
14 char ifa_label[IFNAMSIZ];
15};
16
17#define DN_DEV_S_RU 0 /* Run - working normally */
18#define DN_DEV_S_CR 1 /* Circuit Rejected */
19#define DN_DEV_S_DS 2 /* Data Link Start */
20#define DN_DEV_S_RI 3 /* Routing Layer Initialize */
21#define DN_DEV_S_RV 4 /* Routing Layer Verify */
22#define DN_DEV_S_RC 5 /* Routing Layer Complete */
23#define DN_DEV_S_OF 6 /* Off */
24#define DN_DEV_S_HA 7 /* Halt */
25
26
27/*
28 * The dn_dev_parms structure contains the set of parameters
29 * for each device (hence inclusion in the dn_dev structure)
30 * and an array is used to store the default types of supported
31 * device (in dn_dev.c).
32 *
33 * The type field matches the ARPHRD_ constants and is used in
34 * searching the list for supported devices when new devices
35 * come up.
36 *
37 * The mode field is used to find out if a device is broadcast,
38 * multipoint, or pointopoint. Please note that DECnet thinks
39 * different ways about devices to the rest of the kernel
40 * so the normal IFF_xxx flags are invalid here. For devices
41 * which can be any combination of the previously mentioned
42 * attributes, you can set this on a per device basis by
43 * installing an up() routine.
44 *
45 * The device state field, defines the initial state in which the
46 * device will come up. In the dn_dev structure, it is the actual
47 * state.
48 *
49 * Things have changed here. I've killed timer1 since it's a user space
50 * issue for a user space routing deamon to sort out. The kernel does
51 * not need to be bothered with it.
52 *
53 * Timers:
54 * t2 - Rate limit timer, min time between routing and hello messages
55 * t3 - Hello timer, send hello messages when it expires
56 *
57 * Callbacks:
58 * up() - Called to initialize device, return value can veto use of
59 * device with DECnet.
60 * down() - Called to turn device off when it goes down
61 * timer3() - Called once for each ifaddr when timer 3 goes off
62 *
63 * sysctl - Hook for sysctl things
64 *
65 */
66struct dn_dev_parms {
67 int type; /* ARPHRD_xxx */
68 int mode; /* Broadcast, Unicast, Mulitpoint */
69#define DN_DEV_BCAST 1
70#define DN_DEV_UCAST 2
71#define DN_DEV_MPOINT 4
72 int state; /* Initial state */
73 int forwarding; /* 0=EndNode, 1=L1Router, 2=L2Router */
74 unsigned long t2; /* Default value of t2 */
75 unsigned long t3; /* Default value of t3 */
76 int priority; /* Priority to be a router */
77 char *name; /* Name for sysctl */
78 int ctl_name; /* Index for sysctl */
79 int (*up)(struct net_device *);
80 void (*down)(struct net_device *);
81 void (*timer3)(struct net_device *, struct dn_ifaddr *ifa);
82 void *sysctl;
83};
84
85
86struct dn_dev {
87 struct dn_ifaddr *ifa_list;
88 struct net_device *dev;
89 struct dn_dev_parms parms;
90 char use_long;
91 struct timer_list timer;
92 unsigned long t3;
93 struct neigh_parms *neigh_parms;
94 unsigned char addr[ETH_ALEN];
95 struct neighbour *router; /* Default router on circuit */
96 struct neighbour *peer; /* Peer on pointopoint links */
97 unsigned long uptime; /* Time device went up in jiffies */
98};
99
100struct dn_short_packet
101{
102 unsigned char msgflg __attribute__((packed));
103 unsigned short dstnode __attribute__((packed));
104 unsigned short srcnode __attribute__((packed));
105 unsigned char forward __attribute__((packed));
106};
107
108struct dn_long_packet
109{
110 unsigned char msgflg __attribute__((packed));
111 unsigned char d_area __attribute__((packed));
112 unsigned char d_subarea __attribute__((packed));
113 unsigned char d_id[6] __attribute__((packed));
114 unsigned char s_area __attribute__((packed));
115 unsigned char s_subarea __attribute__((packed));
116 unsigned char s_id[6] __attribute__((packed));
117 unsigned char nl2 __attribute__((packed));
118 unsigned char visit_ct __attribute__((packed));
119 unsigned char s_class __attribute__((packed));
120 unsigned char pt __attribute__((packed));
121};
122
123/*------------------------- DRP - Routing messages ---------------------*/
124
125struct endnode_hello_message
126{
127 unsigned char msgflg __attribute__((packed));
128 unsigned char tiver[3] __attribute__((packed));
129 unsigned char id[6] __attribute__((packed));
130 unsigned char iinfo __attribute__((packed));
131 unsigned short blksize __attribute__((packed));
132 unsigned char area __attribute__((packed));
133 unsigned char seed[8] __attribute__((packed));
134 unsigned char neighbor[6] __attribute__((packed));
135 unsigned short timer __attribute__((packed));
136 unsigned char mpd __attribute__((packed));
137 unsigned char datalen __attribute__((packed));
138 unsigned char data[2] __attribute__((packed));
139};
140
141struct rtnode_hello_message
142{
143 unsigned char msgflg __attribute__((packed));
144 unsigned char tiver[3] __attribute__((packed));
145 unsigned char id[6] __attribute__((packed));
146 unsigned char iinfo __attribute__((packed));
147 unsigned short blksize __attribute__((packed));
148 unsigned char priority __attribute__((packed));
149 unsigned char area __attribute__((packed));
150 unsigned short timer __attribute__((packed));
151 unsigned char mpd __attribute__((packed));
152};
153
154
155extern void dn_dev_init(void);
156extern void dn_dev_cleanup(void);
157
158extern int dn_dev_ioctl(unsigned int cmd, void __user *arg);
159
160extern void dn_dev_devices_off(void);
161extern void dn_dev_devices_on(void);
162
163extern void dn_dev_init_pkt(struct sk_buff *skb);
164extern void dn_dev_veri_pkt(struct sk_buff *skb);
165extern void dn_dev_hello(struct sk_buff *skb);
166
167extern void dn_dev_up(struct net_device *);
168extern void dn_dev_down(struct net_device *);
169
170extern int dn_dev_set_default(struct net_device *dev, int force);
171extern struct net_device *dn_dev_get_default(void);
172extern int dn_dev_bind_default(dn_address *addr);
173
174extern int register_dnaddr_notifier(struct notifier_block *nb);
175extern int unregister_dnaddr_notifier(struct notifier_block *nb);
176
177static inline int dn_dev_islocal(struct net_device *dev, dn_address addr)
178{
179 struct dn_dev *dn_db = dev->dn_ptr;
180 struct dn_ifaddr *ifa;
181
182 if (dn_db == NULL) {
183 printk(KERN_DEBUG "dn_dev_islocal: Called for non DECnet device\n");
184 return 0;
185 }
186
187 for(ifa = dn_db->ifa_list; ifa; ifa = ifa->ifa_next)
188 if ((addr ^ ifa->ifa_local) == 0)
189 return 1;
190
191 return 0;
192}
193
194#endif /* _NET_DN_DEV_H */
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