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