1/*
2 * DLCI/FRAD	Definitions for Frame Relay Access Devices.  DLCI devices are
3 *		created for each DLCI associated with a FRAD.  The FRAD driver
4 *		is not truly a network device, but the lower level device
5 *		handler.  This allows other FRAD manufacturers to use the DLCI
6 *		code, including its RFC1490 encapsulation alongside the current
7 *		implementation for the Sangoma cards.
8 *
9 * Version:	@(#)if_ifrad.h	0.15	31 Mar 96
10 *
11 * Author:	Mike McLagan <mike.mclagan@linux.org>
12 *
13 * Changes:
14 *		0.15	Mike McLagan	changed structure defs (packed)
15 *					re-arranged flags
16 *					added DLCI_RET vars
17 *
18 *		This program is free software; you can redistribute it and/or
19 *		modify it under the terms of the GNU General Public License
20 *		as published by the Free Software Foundation; either version
21 *		2 of the License, or (at your option) any later version.
22 */
23#ifndef _FRAD_H_
24#define _FRAD_H_
25
26#include <uapi/linux/if_frad.h>
27
28
29#if defined(CONFIG_DLCI) || defined(CONFIG_DLCI_MODULE)
30
31/* these are the fields of an RFC 1490 header */
32struct frhdr
33{
34   unsigned char  control;
35
36   /* for IP packets, this can be the NLPID */
37   unsigned char  pad;
38
39   unsigned char  NLPID;
40   unsigned char  OUI[3];
41   __be16 PID;
42
43#define IP_NLPID pad
44} __packed;
45
46/* see RFC 1490 for the definition of the following */
47#define FRAD_I_UI		0x03
48
49#define FRAD_P_PADDING		0x00
50#define FRAD_P_Q933		0x08
51#define FRAD_P_SNAP		0x80
52#define FRAD_P_CLNP		0x81
53#define FRAD_P_IP		0xCC
54
55struct dlci_local
56{
57   struct net_device      *master;
58   struct net_device      *slave;
59   struct dlci_conf       config;
60   int                    configured;
61   struct list_head	  list;
62
63   /* callback function */
64   void              (*receive)(struct sk_buff *skb, struct net_device *);
65};
66
67struct frad_local
68{
69   struct net_device_stats stats;
70
71   /* devices which this FRAD is slaved to */
72   struct net_device     *master[CONFIG_DLCI_MAX];
73   short             dlci[CONFIG_DLCI_MAX];
74
75   struct frad_conf  config;
76   int               configured;	/* has this device been configured */
77   int               initialized;	/* mem_start, port, irq set ? */
78
79   /* callback functions */
80   int               (*activate)(struct net_device *, struct net_device *);
81   int               (*deactivate)(struct net_device *, struct net_device *);
82   int               (*assoc)(struct net_device *, struct net_device *);
83   int               (*deassoc)(struct net_device *, struct net_device *);
84   int               (*dlci_conf)(struct net_device *, struct net_device *, int get);
85
86   /* fields that are used by the Sangoma SDLA cards */
87   struct timer_list timer;
88   int               type;		/* adapter type */
89   int               state;		/* state of the S502/8 control latch */
90   int               buffer;		/* current buffer for S508 firmware */
91};
92
93#endif /* CONFIG_DLCI || CONFIG_DLCI_MODULE */
94
95extern void dlci_ioctl_set(int (*hook)(unsigned int, void __user *));
96
97#endif
98