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.
29 #define RFCOMM_CONN_TIMEOUT (HZ * 30)
30 #define RFCOMM_DISC_TIMEOUT (HZ * 20)
31 #define RFCOMM_AUTH_TIMEOUT (HZ * 25)
33 #define RFCOMM_DEFAULT_MTU 127
34 #define RFCOMM_DEFAULT_CREDITS 7
36 #define RFCOMM_MAX_L2CAP_MTU 1013
37 #define RFCOMM_MAX_CREDITS 40
39 #define RFCOMM_SKB_HEAD_RESERVE 8
40 #define RFCOMM_SKB_TAIL_RESERVE 2
41 #define RFCOMM_SKB_RESERVE (RFCOMM_SKB_HEAD_RESERVE + RFCOMM_SKB_TAIL_RESERVE)
43 #define RFCOMM_SABM 0x2f
44 #define RFCOMM_DISC 0x43
45 #define RFCOMM_UA 0x63
46 #define RFCOMM_DM 0x0f
47 #define RFCOMM_UIH 0xef
49 #define RFCOMM_TEST 0x08
50 #define RFCOMM_FCON 0x28
51 #define RFCOMM_FCOFF 0x18
52 #define RFCOMM_MSC 0x38
53 #define RFCOMM_RPN 0x24
54 #define RFCOMM_RLS 0x14
55 #define RFCOMM_PN 0x20
56 #define RFCOMM_NSC 0x04
58 #define RFCOMM_V24_FC 0x02
59 #define RFCOMM_V24_RTC 0x04
60 #define RFCOMM_V24_RTR 0x08
61 #define RFCOMM_V24_IC 0x40
62 #define RFCOMM_V24_DV 0x80
64 #define RFCOMM_RPN_BR_2400 0x0
65 #define RFCOMM_RPN_BR_4800 0x1
66 #define RFCOMM_RPN_BR_7200 0x2
67 #define RFCOMM_RPN_BR_9600 0x3
68 #define RFCOMM_RPN_BR_19200 0x4
69 #define RFCOMM_RPN_BR_38400 0x5
70 #define RFCOMM_RPN_BR_57600 0x6
71 #define RFCOMM_RPN_BR_115200 0x7
72 #define RFCOMM_RPN_BR_230400 0x8
74 #define RFCOMM_RPN_DATA_5 0x0
75 #define RFCOMM_RPN_DATA_6 0x1
76 #define RFCOMM_RPN_DATA_7 0x2
77 #define RFCOMM_RPN_DATA_8 0x3
79 #define RFCOMM_RPN_STOP_1 0
80 #define RFCOMM_RPN_STOP_15 1
82 #define RFCOMM_RPN_PARITY_NONE 0x0
83 #define RFCOMM_RPN_PARITY_ODD 0x1
84 #define RFCOMM_RPN_PARITY_EVEN 0x3
85 #define RFCOMM_RPN_PARITY_MARK 0x5
86 #define RFCOMM_RPN_PARITY_SPACE 0x7
88 #define RFCOMM_RPN_FLOW_NONE 0x00
90 #define RFCOMM_RPN_XON_CHAR 0x11
91 #define RFCOMM_RPN_XOFF_CHAR 0x13
93 #define RFCOMM_RPN_PM_BITRATE 0x0001
94 #define RFCOMM_RPN_PM_DATA 0x0002
95 #define RFCOMM_RPN_PM_STOP 0x0004
96 #define RFCOMM_RPN_PM_PARITY 0x0008
97 #define RFCOMM_RPN_PM_PARITY_TYPE 0x0010
98 #define RFCOMM_RPN_PM_XON 0x0020
99 #define RFCOMM_RPN_PM_XOFF 0x0040
100 #define RFCOMM_RPN_PM_FLOW 0x3F00
102 #define RFCOMM_RPN_PM_ALL 0x3F7F
107 u8 len; // Actual size can be 2 bytes
108 } __attribute__ ((packed));
115 } __attribute__ ((packed));
120 } __attribute__ ((packed));
130 } __attribute__ ((packed));
140 } __attribute__ ((packed));
145 } __attribute__ ((packed));
150 } __attribute__ ((packed));
152 /* ---- Core structures, flags etc ---- */
154 struct rfcomm_session {
155 struct list_head list;
162 /* Default DLC parameters */
166 struct list_head dlcs;
170 struct list_head list;
171 struct rfcomm_session *session;
172 struct sk_buff_head tx_queue;
173 struct timer_list timer;
197 void (*data_ready)(struct rfcomm_dlc *d, struct sk_buff *skb);
198 void (*state_change)(struct rfcomm_dlc *d, int err);
199 void (*modem_status)(struct rfcomm_dlc *d, u8 v24_sig);
202 /* DLC and session flags */
203 #define RFCOMM_RX_THROTTLED 0
204 #define RFCOMM_TX_THROTTLED 1
205 #define RFCOMM_TIMED_OUT 2
206 #define RFCOMM_MSC_PENDING 3
207 #define RFCOMM_SEC_PENDING 4
208 #define RFCOMM_AUTH_PENDING 5
209 #define RFCOMM_AUTH_ACCEPT 6
210 #define RFCOMM_AUTH_REJECT 7
211 #define RFCOMM_DEFER_SETUP 8
213 /* Scheduling flags and events */
214 #define RFCOMM_SCHED_STATE 0
215 #define RFCOMM_SCHED_RX 1
216 #define RFCOMM_SCHED_TX 2
217 #define RFCOMM_SCHED_TIMEO 3
218 #define RFCOMM_SCHED_AUTH 4
219 #define RFCOMM_SCHED_WAKEUP 31
221 /* MSC exchange flags */
222 #define RFCOMM_MSCEX_TX 1
223 #define RFCOMM_MSCEX_RX 2
224 #define RFCOMM_MSCEX_OK (RFCOMM_MSCEX_TX + RFCOMM_MSCEX_RX)
227 #define RFCOMM_CFC_UNKNOWN -1
228 #define RFCOMM_CFC_DISABLED 0
229 #define RFCOMM_CFC_ENABLED RFCOMM_MAX_CREDITS
231 /* ---- RFCOMM SEND RPN ---- */
232 int rfcomm_send_rpn(struct rfcomm_session *s, int cr, u8 dlci,
233 u8 bit_rate, u8 data_bits, u8 stop_bits,
234 u8 parity, u8 flow_ctrl_settings,
235 u8 xon_char, u8 xoff_char, u16 param_mask);
237 /* ---- RFCOMM DLCs (channels) ---- */
238 struct rfcomm_dlc *rfcomm_dlc_alloc(gfp_t prio);
239 void rfcomm_dlc_free(struct rfcomm_dlc *d);
240 int rfcomm_dlc_open(struct rfcomm_dlc *d, bdaddr_t *src, bdaddr_t *dst, u8 channel);
241 int rfcomm_dlc_close(struct rfcomm_dlc *d, int reason);
242 int rfcomm_dlc_send(struct rfcomm_dlc *d, struct sk_buff *skb);
243 int rfcomm_dlc_set_modem_status(struct rfcomm_dlc *d, u8 v24_sig);
244 int rfcomm_dlc_get_modem_status(struct rfcomm_dlc *d, u8 *v24_sig);
245 void rfcomm_dlc_accept(struct rfcomm_dlc *d);
247 #define rfcomm_dlc_lock(d) spin_lock(&d->lock)
248 #define rfcomm_dlc_unlock(d) spin_unlock(&d->lock)
250 static inline void rfcomm_dlc_hold(struct rfcomm_dlc *d)
252 atomic_inc(&d->refcnt);
255 static inline void rfcomm_dlc_put(struct rfcomm_dlc *d)
257 if (atomic_dec_and_test(&d->refcnt))
261 extern void __rfcomm_dlc_throttle(struct rfcomm_dlc *d);
262 extern void __rfcomm_dlc_unthrottle(struct rfcomm_dlc *d);
264 static inline void rfcomm_dlc_throttle(struct rfcomm_dlc *d)
266 if (!test_and_set_bit(RFCOMM_RX_THROTTLED, &d->flags))
267 __rfcomm_dlc_throttle(d);
270 static inline void rfcomm_dlc_unthrottle(struct rfcomm_dlc *d)
272 if (test_and_clear_bit(RFCOMM_RX_THROTTLED, &d->flags))
273 __rfcomm_dlc_unthrottle(d);
276 /* ---- RFCOMM sessions ---- */
277 void rfcomm_session_getaddr(struct rfcomm_session *s, bdaddr_t *src, bdaddr_t *dst);
279 static inline void rfcomm_session_hold(struct rfcomm_session *s)
281 atomic_inc(&s->refcnt);
284 /* ---- RFCOMM sockets ---- */
286 sa_family_t rc_family;
291 #define RFCOMM_CONNINFO 0x02
292 struct rfcomm_conninfo {
297 #define RFCOMM_LM 0x03
298 #define RFCOMM_LM_MASTER 0x0001
299 #define RFCOMM_LM_AUTH 0x0002
300 #define RFCOMM_LM_ENCRYPT 0x0004
301 #define RFCOMM_LM_TRUSTED 0x0008
302 #define RFCOMM_LM_RELIABLE 0x0010
303 #define RFCOMM_LM_SECURE 0x0020
305 #define rfcomm_pi(sk) ((struct rfcomm_pinfo *) sk)
307 struct rfcomm_pinfo {
309 struct rfcomm_dlc *dlc;
315 int rfcomm_init_sockets(void);
316 void rfcomm_cleanup_sockets(void);
318 int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc **d);
320 /* ---- RFCOMM TTY ---- */
321 #define RFCOMM_MAX_DEV 256
323 #define RFCOMMCREATEDEV _IOW('R', 200, int)
324 #define RFCOMMRELEASEDEV _IOW('R', 201, int)
325 #define RFCOMMGETDEVLIST _IOR('R', 210, int)
326 #define RFCOMMGETDEVINFO _IOR('R', 211, int)
327 #define RFCOMMSTEALDLC _IOW('R', 220, int)
329 #define RFCOMM_REUSE_DLC 0
330 #define RFCOMM_RELEASE_ONHUP 1
331 #define RFCOMM_HANGUP_NOW 2
332 #define RFCOMM_TTY_ATTACHED 3
333 #define RFCOMM_TTY_RELEASED 4
335 struct rfcomm_dev_req {
343 struct rfcomm_dev_info {
352 struct rfcomm_dev_list_req {
354 struct rfcomm_dev_info dev_info[0];
357 int rfcomm_dev_ioctl(struct sock *sk, unsigned int cmd, void __user *arg);
358 int rfcomm_init_ttys(void);
359 void rfcomm_cleanup_ttys(void);
361 #endif /* __RFCOMM_H */