2 RFCOMM implementation for Linux Bluetooth stack (BlueZ).
3 Copyright (C) 2002 Maxim Krasnyansky <maxk@qualcomm.com>
4 Copyright (C) 2002 Marcel Holtmann <marcel@holtmann.org>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License version 2 as
8 published by the Free Software Foundation;
10 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
11 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
12 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
13 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
14 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
15 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
20 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
21 SOFTWARE IS DISCLAIMED.
25 RPN support - Dirk Husemann <hud@zurich.ibm.com>
29 * $Id: rfcomm.h,v 1.29 2002/10/02 20:26:17 maxk Exp $
37 #define RFCOMM_CONN_TIMEOUT (HZ * 30)
38 #define RFCOMM_DISC_TIMEOUT (HZ * 20)
40 #define RFCOMM_DEFAULT_MTU 127
41 #define RFCOMM_DEFAULT_CREDITS 7
43 #define RFCOMM_MAX_L2CAP_MTU 1024
44 #define RFCOMM_MAX_CREDITS 40
46 #define RFCOMM_SKB_HEAD_RESERVE 8
47 #define RFCOMM_SKB_TAIL_RESERVE 2
48 #define RFCOMM_SKB_RESERVE (RFCOMM_SKB_HEAD_RESERVE + RFCOMM_SKB_TAIL_RESERVE)
50 #define RFCOMM_SABM 0x2f
51 #define RFCOMM_DISC 0x43
52 #define RFCOMM_UA 0x63
53 #define RFCOMM_DM 0x0f
54 #define RFCOMM_UIH 0xef
56 #define RFCOMM_TEST 0x08
57 #define RFCOMM_FCON 0x28
58 #define RFCOMM_FCOFF 0x18
59 #define RFCOMM_MSC 0x38
60 #define RFCOMM_RPN 0x24
61 #define RFCOMM_RLS 0x14
62 #define RFCOMM_PN 0x20
63 #define RFCOMM_NSC 0x04
65 #define RFCOMM_V24_FC 0x02
66 #define RFCOMM_V24_RTC 0x04
67 #define RFCOMM_V24_RTR 0x08
68 #define RFCOMM_V24_IC 0x40
69 #define RFCOMM_V24_DV 0x80
71 #define RFCOMM_RPN_BR_2400 0x0
72 #define RFCOMM_RPN_BR_4800 0x1
73 #define RFCOMM_RPN_BR_7200 0x2
74 #define RFCOMM_RPN_BR_9600 0x3
75 #define RFCOMM_RPN_BR_19200 0x4
76 #define RFCOMM_RPN_BR_38400 0x5
77 #define RFCOMM_RPN_BR_57600 0x6
78 #define RFCOMM_RPN_BR_115200 0x7
79 #define RFCOMM_RPN_BR_230400 0x8
81 #define RFCOMM_RPN_DATA_5 0x0
82 #define RFCOMM_RPN_DATA_6 0x1
83 #define RFCOMM_RPN_DATA_7 0x2
84 #define RFCOMM_RPN_DATA_8 0x3
86 #define RFCOMM_RPN_STOP_1 0
87 #define RFCOMM_RPN_STOP_15 1
89 #define RFCOMM_RPN_PARITY_NONE 0x0
90 #define RFCOMM_RPN_PARITY_ODD 0x4
91 #define RFCOMM_RPN_PARITY_EVEN 0x5
92 #define RFCOMM_RPN_PARITY_MARK 0x6
93 #define RFCOMM_RPN_PARITY_SPACE 0x7
95 #define RFCOMM_RPN_FLOW_NONE 0x00
97 #define RFCOMM_RPN_XON_CHAR 0x11
98 #define RFCOMM_RPN_XOFF_CHAR 0x13
100 #define RFCOMM_RPN_PM_BITRATE 0x0001
101 #define RFCOMM_RPN_PM_DATA 0x0002
102 #define RFCOMM_RPN_PM_STOP 0x0004
103 #define RFCOMM_RPN_PM_PARITY 0x0008
104 #define RFCOMM_RPN_PM_PARITY_TYPE 0x0010
105 #define RFCOMM_RPN_PM_XON 0x0020
106 #define RFCOMM_RPN_PM_XOFF 0x0040
107 #define RFCOMM_RPN_PM_FLOW 0x3F00
109 #define RFCOMM_RPN_PM_ALL 0x3F7F
114 u8 len; // Actual size can be 2 bytes
115 } __attribute__ ((packed));
122 } __attribute__ ((packed));
127 } __attribute__ ((packed));
137 } __attribute__ ((packed));
147 } __attribute__ ((packed));
152 } __attribute__ ((packed));
157 } __attribute__ ((packed));
159 /* ---- Core structures, flags etc ---- */
161 struct rfcomm_session {
162 struct list_head list;
169 /* Default DLC parameters */
173 struct list_head dlcs;
177 struct list_head list;
178 struct rfcomm_session *session;
179 struct sk_buff_head tx_queue;
180 struct timer_list timer;
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);
204 /* DLC and session flags */
205 #define RFCOMM_RX_THROTTLED 0
206 #define RFCOMM_TX_THROTTLED 1
207 #define RFCOMM_MSC_PENDING 2
208 #define RFCOMM_TIMED_OUT 3
210 /* Scheduling flags and events */
211 #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
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)
223 #define RFCOMM_CFC_UNKNOWN -1
224 #define RFCOMM_CFC_DISABLED 0
225 #define RFCOMM_CFC_ENABLED RFCOMM_MAX_CREDITS
227 extern struct task_struct *rfcomm_thread;
228 extern unsigned long rfcomm_event;
230 static inline void rfcomm_schedule(uint event)
234 //set_bit(event, &rfcomm_event);
235 set_bit(RFCOMM_SCHED_WAKEUP, &rfcomm_event);
236 wake_up_process(rfcomm_thread);
239 extern struct semaphore rfcomm_sem;
240 #define rfcomm_lock() down(&rfcomm_sem);
241 #define rfcomm_unlock() up(&rfcomm_sem);
243 /* ---- RFCOMM DLCs (channels) ---- */
244 struct rfcomm_dlc *rfcomm_dlc_alloc(int prio);
245 void rfcomm_dlc_free(struct rfcomm_dlc *d);
246 int rfcomm_dlc_open(struct rfcomm_dlc *d, bdaddr_t *src, bdaddr_t *dst, u8 channel);
247 int rfcomm_dlc_close(struct rfcomm_dlc *d, int reason);
248 int rfcomm_dlc_send(struct rfcomm_dlc *d, struct sk_buff *skb);
249 int rfcomm_dlc_set_modem_status(struct rfcomm_dlc *d, u8 v24_sig);
250 int rfcomm_dlc_get_modem_status(struct rfcomm_dlc *d, u8 *v24_sig);
252 #define rfcomm_dlc_lock(d) spin_lock(&d->lock)
253 #define rfcomm_dlc_unlock(d) spin_unlock(&d->lock)
255 static inline void rfcomm_dlc_hold(struct rfcomm_dlc *d)
257 atomic_inc(&d->refcnt);
260 static inline void rfcomm_dlc_put(struct rfcomm_dlc *d)
262 if (atomic_dec_and_test(&d->refcnt))
266 extern void FASTCALL(__rfcomm_dlc_throttle(struct rfcomm_dlc *d));
267 extern void FASTCALL(__rfcomm_dlc_unthrottle(struct rfcomm_dlc *d));
269 static inline void rfcomm_dlc_throttle(struct rfcomm_dlc *d)
271 if (!test_and_set_bit(RFCOMM_RX_THROTTLED, &d->flags))
272 __rfcomm_dlc_throttle(d);
275 static inline void rfcomm_dlc_unthrottle(struct rfcomm_dlc *d)
277 if (test_and_clear_bit(RFCOMM_RX_THROTTLED, &d->flags))
278 __rfcomm_dlc_unthrottle(d);
281 /* ---- RFCOMM sessions ---- */
282 struct rfcomm_session *rfcomm_session_add(struct socket *sock, int state);
283 struct rfcomm_session *rfcomm_session_get(bdaddr_t *src, bdaddr_t *dst);
284 struct rfcomm_session *rfcomm_session_create(bdaddr_t *src, bdaddr_t *dst, int *err);
285 void rfcomm_session_del(struct rfcomm_session *s);
286 void rfcomm_session_close(struct rfcomm_session *s, int err);
287 void rfcomm_session_getaddr(struct rfcomm_session *s, bdaddr_t *src, bdaddr_t *dst);
289 static inline void rfcomm_session_hold(struct rfcomm_session *s)
291 atomic_inc(&s->refcnt);
294 static inline void rfcomm_session_put(struct rfcomm_session *s)
296 if (atomic_dec_and_test(&s->refcnt))
297 rfcomm_session_del(s);
300 /* ---- RFCOMM chechsum ---- */
301 extern u8 rfcomm_crc_table[];
303 /* ---- RFCOMM sockets ---- */
305 sa_family_t rc_family;
310 #define rfcomm_pi(sk) ((struct rfcomm_pinfo *)sk->sk_protinfo)
312 struct rfcomm_pinfo {
313 struct rfcomm_dlc *dlc;
317 int rfcomm_init_sockets(void);
318 void rfcomm_cleanup_sockets(void);
320 int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc **d);
322 /* ---- RFCOMM TTY ---- */
323 #define RFCOMM_MAX_DEV 256
325 #define RFCOMMCREATEDEV _IOW('R', 200, int)
326 #define RFCOMMRELEASEDEV _IOW('R', 201, int)
327 #define RFCOMMGETDEVLIST _IOR('R', 210, int)
328 #define RFCOMMGETDEVINFO _IOR('R', 211, int)
329 #define RFCOMMSTEALDLC _IOW('R', 220, int)
331 #define RFCOMM_REUSE_DLC 0
332 #define RFCOMM_RELEASE_ONHUP 1
333 #define RFCOMM_HANGUP_NOW 2
334 #define RFCOMM_TTY_ATTACHED 3
336 struct rfcomm_dev_req {
345 struct rfcomm_dev_info {
354 struct rfcomm_dev_list_req {
356 struct rfcomm_dev_info dev_info[0];
359 int rfcomm_dev_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg);
360 int rfcomm_init_ttys(void);
361 void rfcomm_cleanup_ttys(void);
363 extern struct proc_dir_entry *proc_bt_rfcomm;
365 #endif /* __RFCOMM_H */