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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [include/] [net/] [bluetooth/] [rfcomm.h] - Blame information for rev 1765

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Line No. Rev Author Line
1 1275 phoenix
/*
2
   RFCOMM implementation for Linux Bluetooth stack (BlueZ).
3
   Copyright (C) 2002 Maxim Krasnyansky <maxk@qualcomm.com>
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   Copyright (C) 2002 Marcel Holtmann <marcel@holtmann.org>
5
 
6
   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License version 2 as
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   published by the Free Software Foundation;
9
 
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   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
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   IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
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   CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
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   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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   ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
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   COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
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   SOFTWARE IS DISCLAIMED.
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*/
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/*
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   RPN support    -    Dirk Husemann <hud@zurich.ibm.com>
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*/
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28
/*
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 * $Id: rfcomm.h,v 1.1.1.1 2004-04-15 02:34:39 phoenix Exp $
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 */
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32
#ifndef __RFCOMM_H
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#define __RFCOMM_H
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#define RFCOMM_PSM 3
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#define RFCOMM_CONN_TIMEOUT (HZ * 30)
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#define RFCOMM_DISC_TIMEOUT (HZ * 20)
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#define RFCOMM_DEFAULT_MTU      127
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#define RFCOMM_DEFAULT_CREDITS  7
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#define RFCOMM_MAX_L2CAP_MTU    1024
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#define RFCOMM_MAX_CREDITS      40
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#define RFCOMM_SKB_HEAD_RESERVE 8
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#define RFCOMM_SKB_TAIL_RESERVE 2
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#define RFCOMM_SKB_RESERVE      (RFCOMM_SKB_HEAD_RESERVE + RFCOMM_SKB_TAIL_RESERVE)
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50
#define RFCOMM_SABM     0x2f
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#define RFCOMM_DISC     0x43
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#define RFCOMM_UA       0x63
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#define RFCOMM_DM       0x0f
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#define RFCOMM_UIH      0xef
55
 
56
#define RFCOMM_TEST     0x08
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#define RFCOMM_FCON     0x28
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#define RFCOMM_FCOFF    0x18
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#define RFCOMM_MSC      0x38
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#define RFCOMM_RPN      0x24
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#define RFCOMM_RLS      0x14
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#define RFCOMM_PN       0x20
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#define RFCOMM_NSC      0x04
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#define RFCOMM_V24_FC   0x02
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#define RFCOMM_V24_RTC  0x04
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#define RFCOMM_V24_RTR  0x08
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#define RFCOMM_V24_IC   0x40
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#define RFCOMM_V24_DV   0x80
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#define RFCOMM_RPN_BR_2400      0x0
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#define RFCOMM_RPN_BR_4800      0x1
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#define RFCOMM_RPN_BR_7200      0x2
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#define RFCOMM_RPN_BR_9600      0x3
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#define RFCOMM_RPN_BR_19200     0x4
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#define RFCOMM_RPN_BR_38400     0x5
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#define RFCOMM_RPN_BR_57600     0x6
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#define RFCOMM_RPN_BR_115200    0x7
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#define RFCOMM_RPN_BR_230400    0x8
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#define RFCOMM_RPN_DATA_5       0x0
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#define RFCOMM_RPN_DATA_6       0x1
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#define RFCOMM_RPN_DATA_7       0x2
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#define RFCOMM_RPN_DATA_8       0x3
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#define RFCOMM_RPN_STOP_1       0
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#define RFCOMM_RPN_STOP_15      1
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#define RFCOMM_RPN_PARITY_NONE  0x0
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#define RFCOMM_RPN_PARITY_ODD   0x4
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#define RFCOMM_RPN_PARITY_EVEN  0x5
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#define RFCOMM_RPN_PARITY_MARK  0x6
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#define RFCOMM_RPN_PARITY_SPACE 0x7
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#define RFCOMM_RPN_FLOW_NONE    0x00
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#define RFCOMM_RPN_XON_CHAR     0x11
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#define RFCOMM_RPN_XOFF_CHAR    0x13
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#define RFCOMM_RPN_PM_BITRATE           0x0001
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#define RFCOMM_RPN_PM_DATA              0x0002
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#define RFCOMM_RPN_PM_STOP              0x0004
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#define RFCOMM_RPN_PM_PARITY            0x0008
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#define RFCOMM_RPN_PM_PARITY_TYPE       0x0010
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#define RFCOMM_RPN_PM_XON               0x0020
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#define RFCOMM_RPN_PM_XOFF              0x0040
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#define RFCOMM_RPN_PM_FLOW              0x3F00
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109
#define RFCOMM_RPN_PM_ALL               0x3F7F
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struct rfcomm_hdr {
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        u8 addr;
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        u8 ctrl;
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        u8 len;    // Actual size can be 2 bytes
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} __attribute__ ((packed));
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117
struct rfcomm_cmd {
118
        u8 addr;
119
        u8 ctrl;
120
        u8 len;
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        u8 fcs;
122
} __attribute__ ((packed));
123
 
124
struct rfcomm_mcc {
125
        u8 type;
126
        u8 len;
127
} __attribute__ ((packed));
128
 
129
struct rfcomm_pn {
130
        u8  dlci;
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        u8  flow_ctrl;
132
        u8  priority;
133
        u8  ack_timer;
134
        u16 mtu;
135
        u8  max_retrans;
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        u8  credits;
137
} __attribute__ ((packed));
138
 
139
struct rfcomm_rpn {
140
        u8  dlci;
141
        u8  bit_rate;
142
        u8  line_settings;
143
        u8  flow_ctrl;
144
        u8  xon_char;
145
        u8  xoff_char;
146
        u16 param_mask;
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} __attribute__ ((packed));
148
 
149
struct rfcomm_rls {
150
        u8  dlci;
151
        u8  status;
152
} __attribute__ ((packed));
153
 
154
struct rfcomm_msc {
155
        u8  dlci;
156
        u8  v24_sig;
157
} __attribute__ ((packed));
158
 
159
/* ---- Core structures, flags etc ---- */
160
 
161
struct rfcomm_session {
162
        struct list_head list;
163
        struct socket   *sock;
164
        unsigned long    state;
165
        unsigned long    flags;
166
        atomic_t         refcnt;
167
        int              initiator;
168
 
169
        /* Default DLC parameters */
170
        int    cfc;
171
        uint   mtu;
172
 
173
        struct list_head dlcs;
174
};
175
 
176
struct rfcomm_dlc {
177
        struct list_head      list;
178
        struct rfcomm_session *session;
179
        struct sk_buff_head   tx_queue;
180
        struct timer_list     timer;
181
 
182
        spinlock_t    lock;
183
        unsigned long state;
184
        unsigned long flags;
185
        atomic_t      refcnt;
186
        u8            dlci;
187
        u8            addr;
188
        u8            priority;
189
        u8            v24_sig;
190
        u8            mscex;
191
 
192
        uint          mtu;
193
        uint          cfc;
194
        uint          rx_credits;
195
        uint          tx_credits;
196
 
197
        void          *owner;
198
 
199
        void (*data_ready)(struct rfcomm_dlc *d, struct sk_buff *skb);
200
        void (*state_change)(struct rfcomm_dlc *d, int err);
201
        void (*modem_status)(struct rfcomm_dlc *d, u8 v24_sig);
202
};
203
 
204
/* DLC and session flags */
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#define RFCOMM_RX_THROTTLED 0
206
#define RFCOMM_TX_THROTTLED 1
207
#define RFCOMM_MSC_PENDING  2
208
#define RFCOMM_TIMED_OUT    3
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/* Scheduling flags and events */
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#define RFCOMM_SCHED_STATE  0
212
#define RFCOMM_SCHED_RX     1
213
#define RFCOMM_SCHED_TX     2
214
#define RFCOMM_SCHED_TIMEO  3
215
#define RFCOMM_SCHED_WAKEUP 31
216
 
217
/* MSC exchange flags */
218
#define RFCOMM_MSCEX_TX     1
219
#define RFCOMM_MSCEX_RX     2
220
#define RFCOMM_MSCEX_OK     (RFCOMM_MSCEX_TX + RFCOMM_MSCEX_RX)
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222
/* CFC states */
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#define RFCOMM_CFC_UNKNOWN  -1
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#define RFCOMM_CFC_DISABLED 0
225
#define RFCOMM_CFC_ENABLED  RFCOMM_MAX_CREDITS
226
 
227
extern struct task_struct *rfcomm_thread;
228
extern unsigned long rfcomm_event;
229
 
230
static inline void rfcomm_schedule(uint event)
231
{
232
        if (!rfcomm_thread)
233
                return;
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        set_bit(RFCOMM_SCHED_WAKEUP, &rfcomm_event);
235
        wake_up_process(rfcomm_thread);
236
}
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238
extern struct semaphore rfcomm_sem;
239
#define rfcomm_lock()   down(&rfcomm_sem);
240
#define rfcomm_unlock() up(&rfcomm_sem);
241
 
242
/* ---- RFCOMM DLCs (channels) ---- */
243
struct rfcomm_dlc *rfcomm_dlc_alloc(int prio);
244
void rfcomm_dlc_free(struct rfcomm_dlc *d);
245
int  rfcomm_dlc_open(struct rfcomm_dlc *d, bdaddr_t *src, bdaddr_t *dst, u8 channel);
246
int  rfcomm_dlc_close(struct rfcomm_dlc *d, int reason);
247
int  rfcomm_dlc_send(struct rfcomm_dlc *d, struct sk_buff *skb);
248
int  rfcomm_dlc_set_modem_status(struct rfcomm_dlc *d, u8 v24_sig);
249
int  rfcomm_dlc_get_modem_status(struct rfcomm_dlc *d, u8 *v24_sig);
250
 
251
#define rfcomm_dlc_lock(d)      spin_lock(&d->lock)
252
#define rfcomm_dlc_unlock(d)    spin_unlock(&d->lock)
253
 
254
static inline void rfcomm_dlc_hold(struct rfcomm_dlc *d)
255
{
256
        atomic_inc(&d->refcnt);
257
}
258
 
259
static inline void rfcomm_dlc_put(struct rfcomm_dlc *d)
260
{
261
        if (atomic_dec_and_test(&d->refcnt))
262
                rfcomm_dlc_free(d);
263
}
264
 
265
extern void FASTCALL(__rfcomm_dlc_throttle(struct rfcomm_dlc *d));
266
extern void FASTCALL(__rfcomm_dlc_unthrottle(struct rfcomm_dlc *d));
267
 
268
static inline void rfcomm_dlc_throttle(struct rfcomm_dlc *d)
269
{
270
        if (!test_and_set_bit(RFCOMM_RX_THROTTLED, &d->flags))
271
                __rfcomm_dlc_throttle(d);
272
}
273
 
274
static inline void rfcomm_dlc_unthrottle(struct rfcomm_dlc *d)
275
{
276
        if (test_and_clear_bit(RFCOMM_RX_THROTTLED, &d->flags))
277
                __rfcomm_dlc_unthrottle(d);
278
}
279
 
280
/* ---- RFCOMM sessions ---- */
281
struct rfcomm_session *rfcomm_session_add(struct socket *sock, int state);
282
struct rfcomm_session *rfcomm_session_get(bdaddr_t *src, bdaddr_t *dst);
283
struct rfcomm_session *rfcomm_session_create(bdaddr_t *src, bdaddr_t *dst, int *err);
284
void   rfcomm_session_del(struct rfcomm_session *s);
285
void   rfcomm_session_close(struct rfcomm_session *s, int err);
286
void   rfcomm_session_getaddr(struct rfcomm_session *s, bdaddr_t *src, bdaddr_t *dst);
287
 
288
static inline void rfcomm_session_hold(struct rfcomm_session *s)
289
{
290
        atomic_inc(&s->refcnt);
291
}
292
 
293
static inline void rfcomm_session_put(struct rfcomm_session *s)
294
{
295
        if (atomic_dec_and_test(&s->refcnt))
296
                rfcomm_session_del(s);
297
}
298
 
299
/* ---- RFCOMM chechsum ---- */
300
extern u8 rfcomm_crc_table[];
301
 
302
/* ---- RFCOMM sockets ---- */
303
struct sockaddr_rc {
304
        sa_family_t rc_family;
305
        bdaddr_t    rc_bdaddr;
306
        u8          rc_channel;
307
};
308
 
309
#define rfcomm_pi(sk)   ((struct rfcomm_pinfo *) &sk->tp_pinfo)
310
 
311
struct rfcomm_pinfo {
312
        struct rfcomm_dlc *dlc;
313
        u8 channel;
314
};
315
 
316
int  rfcomm_init_sockets(void);
317
void rfcomm_cleanup_sockets(void);
318
 
319
int  rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc **d);
320
 
321
/* ---- RFCOMM TTY ---- */
322
#define RFCOMM_MAX_DEV  256
323
 
324
#define RFCOMMCREATEDEV         _IOW('R', 200, int)
325
#define RFCOMMRELEASEDEV        _IOW('R', 201, int)
326
#define RFCOMMGETDEVLIST        _IOR('R', 210, int)
327
#define RFCOMMGETDEVINFO        _IOR('R', 211, int)
328
#define RFCOMMSTEALDLC          _IOW('R', 220, int)
329
 
330
#define RFCOMM_REUSE_DLC        0
331
#define RFCOMM_RELEASE_ONHUP    1
332
#define RFCOMM_HANGUP_NOW       2
333
#define RFCOMM_TTY_ATTACHED     3
334
 
335
struct rfcomm_dev_req {
336
        s16      dev_id;
337
        u32      flags;
338
        bdaddr_t src;
339
        bdaddr_t dst;
340
        u8       channel;
341
};
342
 
343
struct rfcomm_dev_info {
344
        s16      id;
345
        u32      flags;
346
        u16      state;
347
        bdaddr_t src;
348
        bdaddr_t dst;
349
        u8       channel;
350
};
351
 
352
struct rfcomm_dev_list_req {
353
        u16      dev_num;
354
        struct   rfcomm_dev_info dev_info[0];
355
};
356
 
357
int  rfcomm_dev_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg);
358
int  rfcomm_init_ttys(void);
359
void rfcomm_cleanup_ttys(void);
360
 
361
#endif /* __RFCOMM_H */

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