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
24#ifndef _FRAD_H_
25#define _FRAD_H_
26
27#include <linux/if.h>
28
29/* Structures and constants associated with the DLCI device driver */
30
31struct dlci_add
32{
33   char  devname[IFNAMSIZ];
34   short dlci;
35};
36
37#define DLCI_GET_CONF	(SIOCDEVPRIVATE + 2)
38#define DLCI_SET_CONF	(SIOCDEVPRIVATE + 3)
39
40/*
41 * These are related to the Sangoma SDLA and should remain in order.
42 * Code within the SDLA module is based on the specifics of this
43 * structure.  Change at your own peril.
44 */
45struct dlci_conf {
46   short flags;
47   short CIR_fwd;
48   short Bc_fwd;
49   short Be_fwd;
50   short CIR_bwd;
51   short Bc_bwd;
52   short Be_bwd;
53
54/* these are part of the status read */
55   short Tc_fwd;
56   short Tc_bwd;
57   short Tf_max;
58   short Tb_max;
59
60/* add any new fields here above is a mirror of sdla_dlci_conf */
61};
62
63#define DLCI_GET_SLAVE	(SIOCDEVPRIVATE + 4)
64
65/* configuration flags for DLCI */
66#define DLCI_IGNORE_CIR_OUT	0x0001
67#define DLCI_ACCOUNT_CIR_IN	0x0002
68#define DLCI_BUFFER_IF		0x0008
69
70#define DLCI_VALID_FLAGS	0x000B
71
72/* defines for the actual Frame Relay hardware */
73#define FRAD_GET_CONF	(SIOCDEVPRIVATE)
74#define FRAD_SET_CONF	(SIOCDEVPRIVATE + 1)
75
76#define FRAD_LAST_IOCTL	FRAD_SET_CONF
77
78/*
79 * Based on the setup for the Sangoma SDLA.  If changes are
80 * necessary to this structure, a routine will need to be
81 * added to that module to copy fields.
82 */
83struct frad_conf
84{
85   short station;
86   short flags;
87   short kbaud;
88   short clocking;
89   short mtu;
90   short T391;
91   short T392;
92   short N391;
93   short N392;
94   short N393;
95   short CIR_fwd;
96   short Bc_fwd;
97   short Be_fwd;
98   short CIR_bwd;
99   short Bc_bwd;
100   short Be_bwd;
101
102/* Add new fields here, above is a mirror of the sdla_conf */
103
104};
105
106#define FRAD_STATION_CPE	0x0000
107#define FRAD_STATION_NODE	0x0001
108
109#define FRAD_TX_IGNORE_CIR	0x0001
110#define FRAD_RX_ACCOUNT_CIR	0x0002
111#define FRAD_DROP_ABORTED	0x0004
112#define FRAD_BUFFERIF		0x0008
113#define FRAD_STATS		0x0010
114#define FRAD_MCI		0x0100
115#define FRAD_AUTODLCI		0x8000
116#define FRAD_VALID_FLAGS	0x811F
117
118#define FRAD_CLOCK_INT		0x0001
119#define FRAD_CLOCK_EXT		0x0000
120
121#ifdef __KERNEL__
122
123#if defined(CONFIG_DLCI) || defined(CONFIG_DLCI_MODULE)
124
125/* these are the fields of an RFC 1490 header */
126struct frhdr
127{
128   unsigned char  control;
129
130   /* for IP packets, this can be the NLPID */
131   unsigned char  pad;
132
133   unsigned char  NLPID;
134   unsigned char  OUI[3];
135   __be16 PID;
136
137#define IP_NLPID pad
138} __packed;
139
140/* see RFC 1490 for the definition of the following */
141#define FRAD_I_UI		0x03
142
143#define FRAD_P_PADDING		0x00
144#define FRAD_P_Q933		0x08
145#define FRAD_P_SNAP		0x80
146#define FRAD_P_CLNP		0x81
147#define FRAD_P_IP		0xCC
148
149struct dlci_local
150{
151   struct net_device      *master;
152   struct net_device      *slave;
153   struct dlci_conf       config;
154   int                    configured;
155   struct list_head	  list;
156
157   /* callback function */
158   void              (*receive)(struct sk_buff *skb, struct net_device *);
159};
160
161struct frad_local
162{
163   struct net_device_stats stats;
164
165   /* devices which this FRAD is slaved to */
166   struct net_device     *master[CONFIG_DLCI_MAX];
167   short             dlci[CONFIG_DLCI_MAX];
168
169   struct frad_conf  config;
170   int               configured;	/* has this device been configured */
171   int               initialized;	/* mem_start, port, irq set ? */
172
173   /* callback functions */
174   int               (*activate)(struct net_device *, struct net_device *);
175   int               (*deactivate)(struct net_device *, struct net_device *);
176   int               (*assoc)(struct net_device *, struct net_device *);
177   int               (*deassoc)(struct net_device *, struct net_device *);
178   int               (*dlci_conf)(struct net_device *, struct net_device *, int get);
179
180   /* fields that are used by the Sangoma SDLA cards */
181   struct timer_list timer;
182   int               type;		/* adapter type */
183   int               state;		/* state of the S502/8 control latch */
184   int               buffer;		/* current buffer for S508 firmware */
185};
186
187#endif /* CONFIG_DLCI || CONFIG_DLCI_MODULE */
188
189extern void dlci_ioctl_set(int (*hook)(unsigned int, void __user *));
190
191#endif /* __KERNEL__ */
192
193#endif
194