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#include <linux/skbuff.h>
10#include <linux/timer.h>
11
12struct net_device;
13
14#define	LAPB_OK			0
15#define	LAPB_BADTOKEN		1
16#define	LAPB_INVALUE		2
17#define	LAPB_CONNECTED		3
18#define	LAPB_NOTCONNECTED	4
19#define	LAPB_REFUSED		5
20#define	LAPB_TIMEDOUT		6
21#define	LAPB_NOMEM		7
22
23#define	LAPB_STANDARD		0x00
24#define	LAPB_EXTENDED		0x01
25
26#define	LAPB_SLP		0x00
27#define	LAPB_MLP		0x02
28
29#define	LAPB_DTE		0x00
30#define	LAPB_DCE		0x04
31
32struct lapb_register_struct {
33	void (*connect_confirmation)(struct net_device *dev, int reason);
34	void (*connect_indication)(struct net_device *dev, int reason);
35	void (*disconnect_confirmation)(struct net_device *dev, int reason);
36	void (*disconnect_indication)(struct net_device *dev, int reason);
37	int  (*data_indication)(struct net_device *dev, struct sk_buff *skb);
38	void (*data_transmit)(struct net_device *dev, struct sk_buff *skb);
39};
40
41struct lapb_parms_struct {
42	unsigned int t1;
43	unsigned int t1timer;
44	unsigned int t2;
45	unsigned int t2timer;
46	unsigned int n2;
47	unsigned int n2count;
48	unsigned int window;
49	unsigned int state;
50	unsigned int mode;
51};
52
53extern int lapb_register(struct net_device *dev,
54			 const struct lapb_register_struct *callbacks);
55extern int lapb_unregister(struct net_device *dev);
56extern int lapb_getparms(struct net_device *dev, struct lapb_parms_struct *parms);
57extern int lapb_setparms(struct net_device *dev, struct lapb_parms_struct *parms);
58extern int lapb_connect_request(struct net_device *dev);
59extern int lapb_disconnect_request(struct net_device *dev);
60extern int lapb_data_request(struct net_device *dev, struct sk_buff *skb);
61extern int lapb_data_received(struct net_device *dev, struct sk_buff *skb);
62
63#endif
64