1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * These are the public elements of the Linux LAPB module.
4  */
5 
6 #ifndef	LAPB_KERNEL_H
7 #define	LAPB_KERNEL_H
8 
9 #define	LAPB_OK			0
10 #define	LAPB_BADTOKEN		1
11 #define	LAPB_INVALUE		2
12 #define	LAPB_CONNECTED		3
13 #define	LAPB_NOTCONNECTED	4
14 #define	LAPB_REFUSED		5
15 #define	LAPB_TIMEDOUT		6
16 #define	LAPB_NOMEM		7
17 
18 #define	LAPB_STANDARD		0x00
19 #define	LAPB_EXTENDED		0x01
20 
21 #define	LAPB_SLP		0x00
22 #define	LAPB_MLP		0x02
23 
24 #define	LAPB_DTE		0x00
25 #define	LAPB_DCE		0x04
26 
27 struct lapb_register_struct {
28 	void (*connect_confirmation)(struct net_device *dev, int reason);
29 	void (*connect_indication)(struct net_device *dev, int reason);
30 	void (*disconnect_confirmation)(struct net_device *dev, int reason);
31 	void (*disconnect_indication)(struct net_device *dev, int reason);
32 	int  (*data_indication)(struct net_device *dev, struct sk_buff *skb);
33 	void (*data_transmit)(struct net_device *dev, struct sk_buff *skb);
34 };
35 
36 struct lapb_parms_struct {
37 	unsigned int t1;
38 	unsigned int t1timer;
39 	unsigned int t2;
40 	unsigned int t2timer;
41 	unsigned int n2;
42 	unsigned int n2count;
43 	unsigned int window;
44 	unsigned int state;
45 	unsigned int mode;
46 };
47 
48 extern int lapb_register(struct net_device *dev,
49 			 const struct lapb_register_struct *callbacks);
50 extern int lapb_unregister(struct net_device *dev);
51 extern int lapb_getparms(struct net_device *dev, struct lapb_parms_struct *parms);
52 extern int lapb_setparms(struct net_device *dev, struct lapb_parms_struct *parms);
53 extern int lapb_connect_request(struct net_device *dev);
54 extern int lapb_disconnect_request(struct net_device *dev);
55 extern int lapb_data_request(struct net_device *dev, struct sk_buff *skb);
56 extern int lapb_data_received(struct net_device *dev, struct sk_buff *skb);
57 
58 #endif
59