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1/*********************************************************************
2 *
3 * Filename: irlan_common.h
4 * Version: 0.8
5 * Description: IrDA LAN access layer
6 * Status: Experimental.
7 * Author: Dag Brattli <dagb@cs.uit.no>
8 * Created at: Sun Aug 31 20:14:37 1997
9 * Modified at: Sun Oct 31 19:41:24 1999
10 * Modified by: Dag Brattli <dagb@cs.uit.no>
11 *
12 * Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>,
13 * All Rights Reserved.
14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License as
17 * published by the Free Software Foundation; either version 2 of
18 * the License, or (at your option) any later version.
19 *
20 * Neither Dag Brattli nor University of Tromsø admit liability nor
21 * provide warranty for any of this software. This material is
22 * provided "AS-IS" and at no charge.
23 *
24 ********************************************************************/
25
26#ifndef IRLAN_H
27#define IRLAN_H
28
29#include <asm/param.h> /* for HZ */
30
31#include <linux/kernel.h>
32#include <linux/types.h>
33#include <linux/skbuff.h>
34#include <linux/netdevice.h>
35#include <linux/if_ether.h>
36
37#include <net/irda/irttp.h>
38
39#define IRLAN_MTU 1518
40#define IRLAN_TIMEOUT 10*HZ /* 10 seconds */
41
42/* Command packet types */
43#define CMD_GET_PROVIDER_INFO 0
44#define CMD_GET_MEDIA_CHAR 1
45#define CMD_OPEN_DATA_CHANNEL 2
46#define CMD_CLOSE_DATA_CHAN 3
47#define CMD_RECONNECT_DATA_CHAN 4
48#define CMD_FILTER_OPERATION 5
49
50/* Some responses */
51#define RSP_SUCCESS 0
52#define RSP_INSUFFICIENT_RESOURCES 1
53#define RSP_INVALID_COMMAND_FORMAT 2
54#define RSP_COMMAND_NOT_SUPPORTED 3
55#define RSP_PARAM_NOT_SUPPORTED 4
56#define RSP_VALUE_NOT_SUPPORTED 5
57#define RSP_NOT_OPEN 6
58#define RSP_AUTHENTICATION_REQUIRED 7
59#define RSP_INVALID_PASSWORD 8
60#define RSP_PROTOCOL_ERROR 9
61#define RSP_ASYNCHRONOUS_ERROR 255
62
63/* Media types */
64#define MEDIA_802_3 1
65#define MEDIA_802_5 2
66
67/* Filter parameters */
68#define DATA_CHAN 1
69#define FILTER_TYPE 2
70#define FILTER_MODE 3
71
72/* Filter types */
73#define IRLAN_DIRECTED 0x01
74#define IRLAN_FUNCTIONAL 0x02
75#define IRLAN_GROUP 0x04
76#define IRLAN_MAC_FRAME 0x08
77#define IRLAN_MULTICAST 0x10
78#define IRLAN_BROADCAST 0x20
79#define IRLAN_IPX_SOCKET 0x40
80
81/* Filter modes */
82#define ALL 1
83#define FILTER 2
84#define NONE 3
85
86/* Filter operations */
87#define GET 1
88#define CLEAR 2
89#define ADD 3
90#define REMOVE 4
91#define DYNAMIC 5
92
93/* Access types */
94#define ACCESS_DIRECT 1
95#define ACCESS_PEER 2
96#define ACCESS_HOSTED 3
97
98#define IRLAN_BYTE 0
99#define IRLAN_SHORT 1
100#define IRLAN_ARRAY 2
101
102/* IrLAN sits on top if IrTTP */
103#define IRLAN_MAX_HEADER (TTP_HEADER+LMP_HEADER)
104/* 1 byte for the command code and 1 byte for the parameter count */
105#define IRLAN_CMD_HEADER 2
106
107#define IRLAN_STRING_PARAMETER_LEN(name, value) (1 + strlen((name)) + 2 \
108 + strlen ((value)))
109#define IRLAN_BYTE_PARAMETER_LEN(name) (1 + strlen((name)) + 2 + 1)
110#define IRLAN_SHORT_PARAMETER_LEN(name) (1 + strlen((name)) + 2 + 2)
111
112/*
113 * IrLAN client
114 */
115struct irlan_client_cb {
116 int state;
117
118 int open_retries;
119
120 struct tsap_cb *tsap_ctrl;
121 __u32 max_sdu_size;
122 __u8 max_header_size;
123
124 int access_type; /* Access type of provider */
125 __u8 reconnect_key[255];
126 __u8 key_len;
127
128 __u16 recv_arb_val;
129 __u16 max_frame;
130 int filter_type;
131
132 int unicast_open;
133 int broadcast_open;
134
135 int tx_busy;
136 struct sk_buff_head txq; /* Transmit control queue */
137
138 struct iriap_cb *iriap;
139
140 struct timer_list kick_timer;
141};
142
143/*
144 * IrLAN provider
145 */
146struct irlan_provider_cb {
147 int state;
148
149 struct tsap_cb *tsap_ctrl;
150 __u32 max_sdu_size;
151 __u8 max_header_size;
152
153 /*
154 * Store some values here which are used by the provider to parse
155 * the filter operations
156 */
157 int data_chan;
158 int filter_type;
159 int filter_mode;
160 int filter_operation;
161 int filter_entry;
162 int access_type; /* Access type */
163 __u16 send_arb_val;
164
165 __u8 mac_address[ETH_ALEN]; /* Generated MAC address for peer device */
166};
167
168/*
169 * IrLAN control block
170 */
171struct irlan_cb {
172 int magic;
173 struct list_head dev_list;
174 struct net_device *dev; /* Ethernet device structure*/
175
176 __u32 saddr; /* Source device address */
177 __u32 daddr; /* Destination device address */
178 int disconnect_reason; /* Why we got disconnected */
179
180 int media; /* Media type */
181 __u8 version[2]; /* IrLAN version */
182
183 struct tsap_cb *tsap_data; /* Data TSAP */
184
185 int use_udata; /* Use Unit Data transfers */
186
187 __u8 stsap_sel_data; /* Source data TSAP selector */
188 __u8 dtsap_sel_data; /* Destination data TSAP selector */
189 __u8 dtsap_sel_ctrl; /* Destination ctrl TSAP selector */
190
191 struct irlan_client_cb client; /* Client specific fields */
192 struct irlan_provider_cb provider; /* Provider specific fields */
193
194 __u32 max_sdu_size;
195 __u8 max_header_size;
196
197 wait_queue_head_t open_wait;
198 struct timer_list watchdog_timer;
199};
200
201void irlan_close(struct irlan_cb *self);
202void irlan_close_tsaps(struct irlan_cb *self);
203
204int irlan_register_netdev(struct irlan_cb *self);
205void irlan_ias_register(struct irlan_cb *self, __u8 tsap_sel);
206void irlan_start_watchdog_timer(struct irlan_cb *self, int timeout);
207
208void irlan_open_data_tsap(struct irlan_cb *self);
209
210int irlan_run_ctrl_tx_queue(struct irlan_cb *self);
211
212struct irlan_cb *irlan_get_any(void);
213void irlan_get_provider_info(struct irlan_cb *self);
214void irlan_get_media_char(struct irlan_cb *self);
215void irlan_open_data_channel(struct irlan_cb *self);
216void irlan_close_data_channel(struct irlan_cb *self);
217void irlan_set_multicast_filter(struct irlan_cb *self, int status);
218void irlan_set_broadcast_filter(struct irlan_cb *self, int status);
219
220int irlan_insert_byte_param(struct sk_buff *skb, char *param, __u8 value);
221int irlan_insert_short_param(struct sk_buff *skb, char *param, __u16 value);
222int irlan_insert_string_param(struct sk_buff *skb, char *param, char *value);
223int irlan_insert_array_param(struct sk_buff *skb, char *name, __u8 *value,
224 __u16 value_len);
225
226int irlan_extract_param(__u8 *buf, char *name, char *value, __u16 *len);
227
228#endif
229
230