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 12 struct 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 32 struct 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 41 struct 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 53 extern int lapb_register(struct net_device *dev, 54 const struct lapb_register_struct *callbacks); 55 extern int lapb_unregister(struct net_device *dev); 56 extern int lapb_getparms(struct net_device *dev, struct lapb_parms_struct *parms); 57 extern int lapb_setparms(struct net_device *dev, struct lapb_parms_struct *parms); 58 extern int lapb_connect_request(struct net_device *dev); 59 extern int lapb_disconnect_request(struct net_device *dev); 60 extern int lapb_data_request(struct net_device *dev, struct sk_buff *skb); 61 extern int lapb_data_received(struct net_device *dev, struct sk_buff *skb); 62 63 #endif 64