1 /* SPDX-License-Identifier: GPL-2.0 */
5 #include <linux/netdevice.h>
10 struct dn_ifaddr __rcu *ifa_next;
11 struct dn_dev *ifa_dev;
16 char ifa_label[IFNAMSIZ];
20 #define DN_DEV_S_RU 0 /* Run - working normally */
21 #define DN_DEV_S_CR 1 /* Circuit Rejected */
22 #define DN_DEV_S_DS 2 /* Data Link Start */
23 #define DN_DEV_S_RI 3 /* Routing Layer Initialize */
24 #define DN_DEV_S_RV 4 /* Routing Layer Verify */
25 #define DN_DEV_S_RC 5 /* Routing Layer Complete */
26 #define DN_DEV_S_OF 6 /* Off */
27 #define DN_DEV_S_HA 7 /* Halt */
31 * The dn_dev_parms structure contains the set of parameters
32 * for each device (hence inclusion in the dn_dev structure)
33 * and an array is used to store the default types of supported
34 * device (in dn_dev.c).
36 * The type field matches the ARPHRD_ constants and is used in
37 * searching the list for supported devices when new devices
40 * The mode field is used to find out if a device is broadcast,
41 * multipoint, or pointopoint. Please note that DECnet thinks
42 * different ways about devices to the rest of the kernel
43 * so the normal IFF_xxx flags are invalid here. For devices
44 * which can be any combination of the previously mentioned
45 * attributes, you can set this on a per device basis by
46 * installing an up() routine.
48 * The device state field, defines the initial state in which the
49 * device will come up. In the dn_dev structure, it is the actual
52 * Things have changed here. I've killed timer1 since it's a user space
53 * issue for a user space routing deamon to sort out. The kernel does
54 * not need to be bothered with it.
57 * t2 - Rate limit timer, min time between routing and hello messages
58 * t3 - Hello timer, send hello messages when it expires
61 * up() - Called to initialize device, return value can veto use of
63 * down() - Called to turn device off when it goes down
64 * timer3() - Called once for each ifaddr when timer 3 goes off
66 * sysctl - Hook for sysctl things
70 int type; /* ARPHRD_xxx */
71 int mode; /* Broadcast, Unicast, Mulitpoint */
72 #define DN_DEV_BCAST 1
73 #define DN_DEV_UCAST 2
74 #define DN_DEV_MPOINT 4
75 int state; /* Initial state */
76 int forwarding; /* 0=EndNode, 1=L1Router, 2=L2Router */
77 unsigned long t2; /* Default value of t2 */
78 unsigned long t3; /* Default value of t3 */
79 int priority; /* Priority to be a router */
80 char *name; /* Name for sysctl */
81 int (*up)(struct net_device *);
82 void (*down)(struct net_device *);
83 void (*timer3)(struct net_device *, struct dn_ifaddr *ifa);
89 struct dn_ifaddr __rcu *ifa_list;
90 struct net_device *dev;
91 struct dn_dev_parms parms;
93 struct timer_list timer;
95 struct neigh_parms *neigh_parms;
97 struct neighbour *router; /* Default router on circuit */
98 struct neighbour *peer; /* Peer on pointopoint links */
99 unsigned long uptime; /* Time device went up in jiffies */
102 struct dn_short_packet {
109 struct dn_long_packet {
123 /*------------------------- DRP - Routing messages ---------------------*/
125 struct endnode_hello_message {
140 struct rtnode_hello_message {
153 void dn_dev_init(void);
154 void dn_dev_cleanup(void);
156 int dn_dev_ioctl(unsigned int cmd, void __user *arg);
158 void dn_dev_devices_off(void);
159 void dn_dev_devices_on(void);
161 void dn_dev_init_pkt(struct sk_buff *skb);
162 void dn_dev_veri_pkt(struct sk_buff *skb);
163 void dn_dev_hello(struct sk_buff *skb);
165 void dn_dev_up(struct net_device *);
166 void dn_dev_down(struct net_device *);
168 int dn_dev_set_default(struct net_device *dev, int force);
169 struct net_device *dn_dev_get_default(void);
170 int dn_dev_bind_default(__le16 *addr);
172 int register_dnaddr_notifier(struct notifier_block *nb);
173 int unregister_dnaddr_notifier(struct notifier_block *nb);
175 static inline int dn_dev_islocal(struct net_device *dev, __le16 addr)
177 struct dn_dev *dn_db;
178 struct dn_ifaddr *ifa;
182 dn_db = rcu_dereference(dev->dn_ptr);
184 printk(KERN_DEBUG "dn_dev_islocal: Called for non DECnet device\n");
188 for (ifa = rcu_dereference(dn_db->ifa_list);
190 ifa = rcu_dereference(ifa->ifa_next))
191 if ((addr ^ ifa->ifa_local) == 0) {
200 #endif /* _NET_DN_DEV_H */