Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #ifndef _NET_DN_DEV_H |
2 | #define _NET_DN_DEV_H | |
3 | ||
4 | ||
5 | struct dn_dev; | |
6 | ||
7 | struct 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 | */ | |
66 | struct 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 | ||
86 | struct 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 | ||
100 | struct 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 | ||
108 | struct 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 | ||
125 | struct 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 | ||
141 | struct 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 | ||
155 | extern void dn_dev_init(void); | |
156 | extern void dn_dev_cleanup(void); | |
157 | ||
158 | extern int dn_dev_ioctl(unsigned int cmd, void __user *arg); | |
159 | ||
160 | extern void dn_dev_devices_off(void); | |
161 | extern void dn_dev_devices_on(void); | |
162 | ||
163 | extern void dn_dev_init_pkt(struct sk_buff *skb); | |
164 | extern void dn_dev_veri_pkt(struct sk_buff *skb); | |
165 | extern void dn_dev_hello(struct sk_buff *skb); | |
166 | ||
167 | extern void dn_dev_up(struct net_device *); | |
168 | extern void dn_dev_down(struct net_device *); | |
169 | ||
170 | extern int dn_dev_set_default(struct net_device *dev, int force); | |
171 | extern struct net_device *dn_dev_get_default(void); | |
172 | extern int dn_dev_bind_default(dn_address *addr); | |
173 | ||
174 | extern int register_dnaddr_notifier(struct notifier_block *nb); | |
175 | extern int unregister_dnaddr_notifier(struct notifier_block *nb); | |
176 | ||
177 | static 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 */ |