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Linux/include/net/irda/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 <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 
 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  */
114 struct irlan_client_cb {
115         int state;
116 
117         int open_retries;
118 
119         struct tsap_cb *tsap_ctrl;
120         __u32 max_sdu_size;
121         __u8  max_header_size;
122         
123         int access_type;         /* Access type of provider */
124         __u8 reconnect_key[255];
125         __u8 key_len;
126         
127         __u16 recv_arb_val;
128         __u16 max_frame;
129         int filter_type;
130 
131         int unicast_open;
132         int broadcast_open;
133 
134         int tx_busy;
135         struct sk_buff_head txq; /* Transmit control queue */
136 
137         struct iriap_cb *iriap;
138 
139         struct timer_list kick_timer;
140 };
141 
142 /*
143  * IrLAN provider
144  */
145 struct irlan_provider_cb {
146         int state;
147         
148         struct tsap_cb *tsap_ctrl;
149         __u32 max_sdu_size;
150         __u8  max_header_size;
151 
152         /*
153          *  Store some values here which are used by the provider to parse
154          *  the filter operations
155          */
156         int data_chan;
157         int filter_type;
158         int filter_mode;
159         int filter_operation;
160         int filter_entry;
161         int access_type;     /* Access type */
162         __u16 send_arb_val;
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;
172         struct list_head  dev_list;
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 
193         __u32 max_sdu_size;
194         __u8  max_header_size;
195         
196         wait_queue_head_t open_wait;
197         struct timer_list watchdog_timer;
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 
230 

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