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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#if defined(CONFIG_DLCI) || defined(CONFIG_DLCI_MODULE)
30
31/* Structures and constants associated with the DLCI device driver */
32
33struct dlci_add
34{
35 char devname[IFNAMSIZ];
36 short dlci;
37};
38
39#define DLCI_GET_CONF (SIOCDEVPRIVATE + 2)
40#define DLCI_SET_CONF (SIOCDEVPRIVATE + 3)
41
42/*
43 * These are related to the Sangoma SDLA and should remain in order.
44 * Code within the SDLA module is based on the specifics of this
45 * structure. Change at your own peril.
46 */
47struct dlci_conf {
48 short flags;
49 short CIR_fwd;
50 short Bc_fwd;
51 short Be_fwd;
52 short CIR_bwd;
53 short Bc_bwd;
54 short Be_bwd;
55
56/* these are part of the status read */
57 short Tc_fwd;
58 short Tc_bwd;
59 short Tf_max;
60 short Tb_max;
61
62/* add any new fields here above is a mirror of sdla_dlci_conf */
63};
64
65#define DLCI_GET_SLAVE (SIOCDEVPRIVATE + 4)
66
67/* configuration flags for DLCI */
68#define DLCI_IGNORE_CIR_OUT 0x0001
69#define DLCI_ACCOUNT_CIR_IN 0x0002
70#define DLCI_BUFFER_IF 0x0008
71
72#define DLCI_VALID_FLAGS 0x000B
73
74/* FRAD driver uses these to indicate what it did with packet */
75#define DLCI_RET_OK 0x00
76#define DLCI_RET_ERR 0x01
77#define DLCI_RET_DROP 0x02
78
79/* defines for the actual Frame Relay hardware */
80#define FRAD_GET_CONF (SIOCDEVPRIVATE)
81#define FRAD_SET_CONF (SIOCDEVPRIVATE + 1)
82
83#define FRAD_LAST_IOCTL FRAD_SET_CONF
84
85/*
86 * Based on the setup for the Sangoma SDLA. If changes are
87 * necessary to this structure, a routine will need to be
88 * added to that module to copy fields.
89 */
90struct frad_conf
91{
92 short station;
93 short flags;
94 short kbaud;
95 short clocking;
96 short mtu;
97 short T391;
98 short T392;
99 short N391;
100 short N392;
101 short N393;
102 short CIR_fwd;
103 short Bc_fwd;
104 short Be_fwd;
105 short CIR_bwd;
106 short Bc_bwd;
107 short Be_bwd;
108
109/* Add new fields here, above is a mirror of the sdla_conf */
110
111};
112
113#define FRAD_STATION_CPE 0x0000
114#define FRAD_STATION_NODE 0x0001
115
116#define FRAD_TX_IGNORE_CIR 0x0001
117#define FRAD_RX_ACCOUNT_CIR 0x0002
118#define FRAD_DROP_ABORTED 0x0004
119#define FRAD_BUFFERIF 0x0008
120#define FRAD_STATS 0x0010
121#define FRAD_MCI 0x0100
122#define FRAD_AUTODLCI 0x8000
123#define FRAD_VALID_FLAGS 0x811F
124
125#define FRAD_CLOCK_INT 0x0001
126#define FRAD_CLOCK_EXT 0x0000
127
128#ifdef __KERNEL__
129
130/* these are the fields of an RFC 1490 header */
131struct frhdr
132{
133 unsigned char control;
134
135 /* for IP packets, this can be the NLPID */
136 unsigned char pad;
137
138 unsigned char NLPID;
139 unsigned char OUI[3];
140 unsigned short PID;
141
142#define IP_NLPID pad
143} __attribute__((packed));
144
145/* see RFC 1490 for the definition of the following */
146#define FRAD_I_UI 0x03
147
148#define FRAD_P_PADDING 0x00
149#define FRAD_P_Q933 0x08
150#define FRAD_P_SNAP 0x80
151#define FRAD_P_CLNP 0x81
152#define FRAD_P_IP 0xCC
153
154struct dlci_local
155{
156 struct net_device_stats stats;
157 struct net_device *master;
158 struct net_device *slave;
159 struct dlci_conf config;
160 int configured;
161 struct list_head list;
162
163 /* callback function */
164 void (*receive)(struct sk_buff *skb, struct net_device *);
165};
166
167struct frad_local
168{
169 struct net_device_stats stats;
170
171 /* devices which this FRAD is slaved to */
172 struct net_device *master[CONFIG_DLCI_MAX];
173 short dlci[CONFIG_DLCI_MAX];
174
175 struct frad_conf config;
176 int configured; /* has this device been configured */
177 int initialized; /* mem_start, port, irq set ? */
178
179 /* callback functions */
180 int (*activate)(struct net_device *, struct net_device *);
181 int (*deactivate)(struct net_device *, struct net_device *);
182 int (*assoc)(struct net_device *, struct net_device *);
183 int (*deassoc)(struct net_device *, struct net_device *);
184 int (*dlci_conf)(struct net_device *, struct net_device *, int get);
185
186 /* fields that are used by the Sangoma SDLA cards */
187 struct timer_list timer;
188 int type; /* adapter type */
189 int state; /* state of the S502/8 control latch */
190 int buffer; /* current buffer for S508 firmware */
191};
192
193#endif /* __KERNEL__ */
194
195#endif /* CONFIG_DLCI || CONFIG_DLCI_MODULE */
196
197#ifdef __KERNEL__
198extern void dlci_ioctl_set(int (*hook)(unsigned int, void __user *));
199#endif
200
201#endif