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irlan_common.h
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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 <[email protected]>
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 <[email protected]>
11  *
12  * Copyright (c) 1998-1999 Dag Brattli <[email protected]>,
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 
36 #include <net/irda/irttp.h>
37 
38 #define IRLAN_MTU 1518
39 #define IRLAN_TIMEOUT 10*HZ /* 10 seconds */
40 
41 /* Command packet types */
42 #define CMD_GET_PROVIDER_INFO 0
43 #define CMD_GET_MEDIA_CHAR 1
44 #define CMD_OPEN_DATA_CHANNEL 2
45 #define CMD_CLOSE_DATA_CHAN 3
46 #define CMD_RECONNECT_DATA_CHAN 4
47 #define CMD_FILTER_OPERATION 5
48 
49 /* Some responses */
50 #define RSP_SUCCESS 0
51 #define RSP_INSUFFICIENT_RESOURCES 1
52 #define RSP_INVALID_COMMAND_FORMAT 2
53 #define RSP_COMMAND_NOT_SUPPORTED 3
54 #define RSP_PARAM_NOT_SUPPORTED 4
55 #define RSP_VALUE_NOT_SUPPORTED 5
56 #define RSP_NOT_OPEN 6
57 #define RSP_AUTHENTICATION_REQUIRED 7
58 #define RSP_INVALID_PASSWORD 8
59 #define RSP_PROTOCOL_ERROR 9
60 #define RSP_ASYNCHRONOUS_ERROR 255
61 
62 /* Media types */
63 #define MEDIA_802_3 1
64 #define MEDIA_802_5 2
65 
66 /* Filter parameters */
67 #define DATA_CHAN 1
68 #define FILTER_TYPE 2
69 #define FILTER_MODE 3
70 
71 /* Filter types */
72 #define IRLAN_DIRECTED 0x01
73 #define IRLAN_FUNCTIONAL 0x02
74 #define IRLAN_GROUP 0x04
75 #define IRLAN_MAC_FRAME 0x08
76 #define IRLAN_MULTICAST 0x10
77 #define IRLAN_BROADCAST 0x20
78 #define IRLAN_IPX_SOCKET 0x40
79 
80 /* Filter modes */
81 #define ALL 1
82 #define FILTER 2
83 #define NONE 3
84 
85 /* Filter operations */
86 #define GET 1
87 #define CLEAR 2
88 #define ADD 3
89 #define REMOVE 4
90 #define DYNAMIC 5
91 
92 /* Access types */
93 #define ACCESS_DIRECT 1
94 #define ACCESS_PEER 2
95 #define ACCESS_HOSTED 3
96 
97 #define IRLAN_BYTE 0
98 #define IRLAN_SHORT 1
99 #define IRLAN_ARRAY 2
100 
101 /* IrLAN sits on top if IrTTP */
102 #define IRLAN_MAX_HEADER (TTP_HEADER+LMP_HEADER)
103 /* 1 byte for the command code and 1 byte for the parameter count */
104 #define IRLAN_CMD_HEADER 2
105 
106 #define IRLAN_STRING_PARAMETER_LEN(name, value) (1 + strlen((name)) + 2 \
107  + strlen ((value)))
108 #define IRLAN_BYTE_PARAMETER_LEN(name) (1 + strlen((name)) + 2 + 1)
109 #define IRLAN_SHORT_PARAMETER_LEN(name) (1 + strlen((name)) + 2 + 2)
110 
111 /*
112  * IrLAN client
113  */
115  int state;
116 
118 
122 
123  int access_type; /* Access type of provider */
126 
130 
133 
134  int tx_busy;
135  struct sk_buff_head txq; /* Transmit control queue */
136 
137  struct iriap_cb *iriap;
138 
140 };
141 
142 /*
143  * IrLAN provider
144  */
146  int state;
147 
151 
152  /*
153  * Store some values here which are used by the provider to parse
154  * the filter operations
155  */
161  int access_type; /* Access type */
163 
164  __u8 mac_address[6]; /* Generated MAC address for peer device */
165 };
166 
167 /*
168  * IrLAN control block
169  */
170 struct irlan_cb {
171  int magic;
173  struct net_device *dev; /* Ethernet device structure*/
174 
175  __u32 saddr; /* Source device address */
176  __u32 daddr; /* Destination device address */
177  int disconnect_reason; /* Why we got disconnected */
178 
179  int media; /* Media type */
180  __u8 version[2]; /* IrLAN version */
181 
182  struct tsap_cb *tsap_data; /* Data TSAP */
183 
184  int use_udata; /* Use Unit Data transfers */
185 
186  __u8 stsap_sel_data; /* Source data TSAP selector */
187  __u8 dtsap_sel_data; /* Destination data TSAP selector */
188  __u8 dtsap_sel_ctrl; /* Destination ctrl TSAP selector */
189 
190  struct irlan_client_cb client; /* Client specific fields */
191  struct irlan_provider_cb provider; /* Provider specific fields */
192 
195 
198 };
199 
200 void irlan_close(struct irlan_cb *self);
201 void irlan_close_tsaps(struct irlan_cb *self);
202 
203 int irlan_register_netdev(struct irlan_cb *self);
204 void irlan_ias_register(struct irlan_cb *self, __u8 tsap_sel);
205 void irlan_start_watchdog_timer(struct irlan_cb *self, int timeout);
206 
207 void irlan_open_data_tsap(struct irlan_cb *self);
208 
209 int irlan_run_ctrl_tx_queue(struct irlan_cb *self);
210 
211 struct irlan_cb *irlan_get_any(void);
212 void irlan_get_provider_info(struct irlan_cb *self);
213 void irlan_get_media_char(struct irlan_cb *self);
214 void irlan_open_data_channel(struct irlan_cb *self);
215 void irlan_close_data_channel(struct irlan_cb *self);
216 void irlan_set_multicast_filter(struct irlan_cb *self, int status);
217 void irlan_set_broadcast_filter(struct irlan_cb *self, int status);
218 
219 int irlan_insert_byte_param(struct sk_buff *skb, char *param, __u8 value);
220 int irlan_insert_short_param(struct sk_buff *skb, char *param, __u16 value);
221 int irlan_insert_string_param(struct sk_buff *skb, char *param, char *value);
222 int irlan_insert_array_param(struct sk_buff *skb, char *name, __u8 *value,
223  __u16 value_len);
224 
225 int irlan_extract_param(__u8 *buf, char *name, char *value, __u16 *len);
226 
227 #endif
228 
229