Avoid beyond bounds copy while caching ACL
[zen-stable.git] / include / net / bluetooth / l2cap.h
blobb1664ed884e68c461088217b9d97915e519592f0
1 /*
2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (C) 2000-2001 Qualcomm Incorporated
4 Copyright (C) 2009-2010 Gustavo F. Padovan <gustavo@padovan.org>
5 Copyright (C) 2010 Google Inc.
7 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License version 2 as
11 published by the Free Software Foundation;
13 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
14 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
16 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
17 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
18 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
19 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
20 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
22 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
23 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
24 SOFTWARE IS DISCLAIMED.
27 #ifndef __L2CAP_H
28 #define __L2CAP_H
30 #include <asm/unaligned.h>
32 /* L2CAP defaults */
33 #define L2CAP_DEFAULT_MTU 672
34 #define L2CAP_DEFAULT_MIN_MTU 48
35 #define L2CAP_DEFAULT_FLUSH_TO 0xffff
36 #define L2CAP_DEFAULT_TX_WINDOW 63
37 #define L2CAP_DEFAULT_EXT_WINDOW 0x3FFF
38 #define L2CAP_DEFAULT_MAX_TX 3
39 #define L2CAP_DEFAULT_RETRANS_TO 2000 /* 2 seconds */
40 #define L2CAP_DEFAULT_MONITOR_TO 12000 /* 12 seconds */
41 #define L2CAP_DEFAULT_MAX_PDU_SIZE 1009 /* Sized for 3-DH5 packet */
42 #define L2CAP_DEFAULT_ACK_TO 200
43 #define L2CAP_LE_DEFAULT_MTU 23
44 #define L2CAP_DEFAULT_MAX_SDU_SIZE 0xFFFF
45 #define L2CAP_DEFAULT_SDU_ITIME 0xFFFFFFFF
46 #define L2CAP_DEFAULT_ACC_LAT 0xFFFFFFFF
48 #define L2CAP_DISC_TIMEOUT (100)
49 #define L2CAP_DISC_REJ_TIMEOUT (5000) /* 5 seconds */
50 #define L2CAP_ENC_TIMEOUT (5000) /* 5 seconds */
51 #define L2CAP_CONN_TIMEOUT (40000) /* 40 seconds */
52 #define L2CAP_INFO_TIMEOUT (4000) /* 4 seconds */
54 /* L2CAP socket address */
55 struct sockaddr_l2 {
56 sa_family_t l2_family;
57 __le16 l2_psm;
58 bdaddr_t l2_bdaddr;
59 __le16 l2_cid;
62 /* L2CAP socket options */
63 #define L2CAP_OPTIONS 0x01
64 struct l2cap_options {
65 __u16 omtu;
66 __u16 imtu;
67 __u16 flush_to;
68 __u8 mode;
69 __u8 fcs;
70 __u8 max_tx;
71 __u16 txwin_size;
74 #define L2CAP_CONNINFO 0x02
75 struct l2cap_conninfo {
76 __u16 hci_handle;
77 __u8 dev_class[3];
80 #define L2CAP_LM 0x03
81 #define L2CAP_LM_MASTER 0x0001
82 #define L2CAP_LM_AUTH 0x0002
83 #define L2CAP_LM_ENCRYPT 0x0004
84 #define L2CAP_LM_TRUSTED 0x0008
85 #define L2CAP_LM_RELIABLE 0x0010
86 #define L2CAP_LM_SECURE 0x0020
88 /* L2CAP command codes */
89 #define L2CAP_COMMAND_REJ 0x01
90 #define L2CAP_CONN_REQ 0x02
91 #define L2CAP_CONN_RSP 0x03
92 #define L2CAP_CONF_REQ 0x04
93 #define L2CAP_CONF_RSP 0x05
94 #define L2CAP_DISCONN_REQ 0x06
95 #define L2CAP_DISCONN_RSP 0x07
96 #define L2CAP_ECHO_REQ 0x08
97 #define L2CAP_ECHO_RSP 0x09
98 #define L2CAP_INFO_REQ 0x0a
99 #define L2CAP_INFO_RSP 0x0b
100 #define L2CAP_CREATE_CHAN_REQ 0x0c
101 #define L2CAP_CREATE_CHAN_RSP 0x0d
102 #define L2CAP_MOVE_CHAN_REQ 0x0e
103 #define L2CAP_MOVE_CHAN_RSP 0x0f
104 #define L2CAP_MOVE_CHAN_CFM 0x10
105 #define L2CAP_MOVE_CHAN_CFM_RSP 0x11
106 #define L2CAP_CONN_PARAM_UPDATE_REQ 0x12
107 #define L2CAP_CONN_PARAM_UPDATE_RSP 0x13
109 /* L2CAP extended feature mask */
110 #define L2CAP_FEAT_FLOWCTL 0x00000001
111 #define L2CAP_FEAT_RETRANS 0x00000002
112 #define L2CAP_FEAT_BIDIR_QOS 0x00000004
113 #define L2CAP_FEAT_ERTM 0x00000008
114 #define L2CAP_FEAT_STREAMING 0x00000010
115 #define L2CAP_FEAT_FCS 0x00000020
116 #define L2CAP_FEAT_EXT_FLOW 0x00000040
117 #define L2CAP_FEAT_FIXED_CHAN 0x00000080
118 #define L2CAP_FEAT_EXT_WINDOW 0x00000100
119 #define L2CAP_FEAT_UCD 0x00000200
121 /* L2CAP checksum option */
122 #define L2CAP_FCS_NONE 0x00
123 #define L2CAP_FCS_CRC16 0x01
125 /* L2CAP fixed channels */
126 #define L2CAP_FC_L2CAP 0x02
127 #define L2CAP_FC_A2MP 0x08
129 /* L2CAP Control Field bit masks */
130 #define L2CAP_CTRL_SAR 0xC000
131 #define L2CAP_CTRL_REQSEQ 0x3F00
132 #define L2CAP_CTRL_TXSEQ 0x007E
133 #define L2CAP_CTRL_SUPERVISE 0x000C
135 #define L2CAP_CTRL_RETRANS 0x0080
136 #define L2CAP_CTRL_FINAL 0x0080
137 #define L2CAP_CTRL_POLL 0x0010
138 #define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */
140 #define L2CAP_CTRL_TXSEQ_SHIFT 1
141 #define L2CAP_CTRL_SUPER_SHIFT 2
142 #define L2CAP_CTRL_REQSEQ_SHIFT 8
143 #define L2CAP_CTRL_SAR_SHIFT 14
145 /* L2CAP Extended Control Field bit mask */
146 #define L2CAP_EXT_CTRL_TXSEQ 0xFFFC0000
147 #define L2CAP_EXT_CTRL_SAR 0x00030000
148 #define L2CAP_EXT_CTRL_SUPERVISE 0x00030000
149 #define L2CAP_EXT_CTRL_REQSEQ 0x0000FFFC
151 #define L2CAP_EXT_CTRL_POLL 0x00040000
152 #define L2CAP_EXT_CTRL_FINAL 0x00000002
153 #define L2CAP_EXT_CTRL_FRAME_TYPE 0x00000001 /* I- or S-Frame */
155 #define L2CAP_EXT_CTRL_REQSEQ_SHIFT 2
156 #define L2CAP_EXT_CTRL_SAR_SHIFT 16
157 #define L2CAP_EXT_CTRL_SUPER_SHIFT 16
158 #define L2CAP_EXT_CTRL_TXSEQ_SHIFT 18
160 /* L2CAP Supervisory Function */
161 #define L2CAP_SUPER_RR 0x00
162 #define L2CAP_SUPER_REJ 0x01
163 #define L2CAP_SUPER_RNR 0x02
164 #define L2CAP_SUPER_SREJ 0x03
166 /* L2CAP Segmentation and Reassembly */
167 #define L2CAP_SAR_UNSEGMENTED 0x00
168 #define L2CAP_SAR_START 0x01
169 #define L2CAP_SAR_END 0x02
170 #define L2CAP_SAR_CONTINUE 0x03
172 /* L2CAP Command rej. reasons */
173 #define L2CAP_REJ_NOT_UNDERSTOOD 0x0000
174 #define L2CAP_REJ_MTU_EXCEEDED 0x0001
175 #define L2CAP_REJ_INVALID_CID 0x0002
177 /* L2CAP structures */
178 struct l2cap_hdr {
179 __le16 len;
180 __le16 cid;
181 } __packed;
182 #define L2CAP_HDR_SIZE 4
183 #define L2CAP_ENH_HDR_SIZE 6
184 #define L2CAP_EXT_HDR_SIZE 8
186 #define L2CAP_FCS_SIZE 2
187 #define L2CAP_SDULEN_SIZE 2
188 #define L2CAP_PSMLEN_SIZE 2
190 struct l2cap_cmd_hdr {
191 __u8 code;
192 __u8 ident;
193 __le16 len;
194 } __packed;
195 #define L2CAP_CMD_HDR_SIZE 4
197 struct l2cap_cmd_rej_unk {
198 __le16 reason;
199 } __packed;
201 struct l2cap_cmd_rej_mtu {
202 __le16 reason;
203 __le16 max_mtu;
204 } __packed;
206 struct l2cap_cmd_rej_cid {
207 __le16 reason;
208 __le16 scid;
209 __le16 dcid;
210 } __packed;
212 struct l2cap_conn_req {
213 __le16 psm;
214 __le16 scid;
215 } __packed;
217 struct l2cap_conn_rsp {
218 __le16 dcid;
219 __le16 scid;
220 __le16 result;
221 __le16 status;
222 } __packed;
224 /* channel indentifier */
225 #define L2CAP_CID_SIGNALING 0x0001
226 #define L2CAP_CID_CONN_LESS 0x0002
227 #define L2CAP_CID_LE_DATA 0x0004
228 #define L2CAP_CID_LE_SIGNALING 0x0005
229 #define L2CAP_CID_SMP 0x0006
230 #define L2CAP_CID_DYN_START 0x0040
231 #define L2CAP_CID_DYN_END 0xffff
233 /* connect/create channel results */
234 #define L2CAP_CR_SUCCESS 0x0000
235 #define L2CAP_CR_PEND 0x0001
236 #define L2CAP_CR_BAD_PSM 0x0002
237 #define L2CAP_CR_SEC_BLOCK 0x0003
238 #define L2CAP_CR_NO_MEM 0x0004
239 #define L2CAP_CR_BAD_AMP 0x0005
241 /* connect/create channel status */
242 #define L2CAP_CS_NO_INFO 0x0000
243 #define L2CAP_CS_AUTHEN_PEND 0x0001
244 #define L2CAP_CS_AUTHOR_PEND 0x0002
246 struct l2cap_conf_req {
247 __le16 dcid;
248 __le16 flags;
249 __u8 data[0];
250 } __packed;
252 struct l2cap_conf_rsp {
253 __le16 scid;
254 __le16 flags;
255 __le16 result;
256 __u8 data[0];
257 } __packed;
259 #define L2CAP_CONF_SUCCESS 0x0000
260 #define L2CAP_CONF_UNACCEPT 0x0001
261 #define L2CAP_CONF_REJECT 0x0002
262 #define L2CAP_CONF_UNKNOWN 0x0003
263 #define L2CAP_CONF_PENDING 0x0004
264 #define L2CAP_CONF_EFS_REJECT 0x0005
266 struct l2cap_conf_opt {
267 __u8 type;
268 __u8 len;
269 __u8 val[0];
270 } __packed;
271 #define L2CAP_CONF_OPT_SIZE 2
273 #define L2CAP_CONF_HINT 0x80
274 #define L2CAP_CONF_MASK 0x7f
276 #define L2CAP_CONF_MTU 0x01
277 #define L2CAP_CONF_FLUSH_TO 0x02
278 #define L2CAP_CONF_QOS 0x03
279 #define L2CAP_CONF_RFC 0x04
280 #define L2CAP_CONF_FCS 0x05
281 #define L2CAP_CONF_EFS 0x06
282 #define L2CAP_CONF_EWS 0x07
284 #define L2CAP_CONF_MAX_SIZE 22
286 struct l2cap_conf_rfc {
287 __u8 mode;
288 __u8 txwin_size;
289 __u8 max_transmit;
290 __le16 retrans_timeout;
291 __le16 monitor_timeout;
292 __le16 max_pdu_size;
293 } __packed;
295 #define L2CAP_MODE_BASIC 0x00
296 #define L2CAP_MODE_RETRANS 0x01
297 #define L2CAP_MODE_FLOWCTL 0x02
298 #define L2CAP_MODE_ERTM 0x03
299 #define L2CAP_MODE_STREAMING 0x04
301 struct l2cap_conf_efs {
302 __u8 id;
303 __u8 stype;
304 __le16 msdu;
305 __le32 sdu_itime;
306 __le32 acc_lat;
307 __le32 flush_to;
308 } __packed;
310 #define L2CAP_SERV_NOTRAFIC 0x00
311 #define L2CAP_SERV_BESTEFFORT 0x01
312 #define L2CAP_SERV_GUARANTEED 0x02
314 #define L2CAP_BESTEFFORT_ID 0x01
316 struct l2cap_disconn_req {
317 __le16 dcid;
318 __le16 scid;
319 } __packed;
321 struct l2cap_disconn_rsp {
322 __le16 dcid;
323 __le16 scid;
324 } __packed;
326 struct l2cap_info_req {
327 __le16 type;
328 } __packed;
330 struct l2cap_info_rsp {
331 __le16 type;
332 __le16 result;
333 __u8 data[0];
334 } __packed;
336 struct l2cap_create_chan_req {
337 __le16 psm;
338 __le16 scid;
339 __u8 amp_id;
340 } __packed;
342 struct l2cap_create_chan_rsp {
343 __le16 dcid;
344 __le16 scid;
345 __le16 result;
346 __le16 status;
347 } __packed;
349 struct l2cap_move_chan_req {
350 __le16 icid;
351 __u8 dest_amp_id;
352 } __packed;
354 struct l2cap_move_chan_rsp {
355 __le16 icid;
356 __le16 result;
357 } __packed;
359 #define L2CAP_MR_SUCCESS 0x0000
360 #define L2CAP_MR_PEND 0x0001
361 #define L2CAP_MR_BAD_ID 0x0002
362 #define L2CAP_MR_SAME_ID 0x0003
363 #define L2CAP_MR_NOT_SUPP 0x0004
364 #define L2CAP_MR_COLLISION 0x0005
365 #define L2CAP_MR_NOT_ALLOWED 0x0006
367 struct l2cap_move_chan_cfm {
368 __le16 icid;
369 __le16 result;
370 } __packed;
372 #define L2CAP_MC_CONFIRMED 0x0000
373 #define L2CAP_MC_UNCONFIRMED 0x0001
375 struct l2cap_move_chan_cfm_rsp {
376 __le16 icid;
377 } __packed;
379 /* info type */
380 #define L2CAP_IT_CL_MTU 0x0001
381 #define L2CAP_IT_FEAT_MASK 0x0002
382 #define L2CAP_IT_FIXED_CHAN 0x0003
384 /* info result */
385 #define L2CAP_IR_SUCCESS 0x0000
386 #define L2CAP_IR_NOTSUPP 0x0001
388 struct l2cap_conn_param_update_req {
389 __le16 min;
390 __le16 max;
391 __le16 latency;
392 __le16 to_multiplier;
393 } __packed;
395 struct l2cap_conn_param_update_rsp {
396 __le16 result;
397 } __packed;
399 /* Connection Parameters result */
400 #define L2CAP_CONN_PARAM_ACCEPTED 0x0000
401 #define L2CAP_CONN_PARAM_REJECTED 0x0001
403 /* ----- L2CAP channels and connections ----- */
404 struct srej_list {
405 __u16 tx_seq;
406 struct list_head list;
409 struct l2cap_chan {
410 struct sock *sk;
412 struct l2cap_conn *conn;
414 __u8 state;
416 atomic_t refcnt;
418 __le16 psm;
419 __u16 dcid;
420 __u16 scid;
422 __u16 imtu;
423 __u16 omtu;
424 __u16 flush_to;
425 __u8 mode;
426 __u8 chan_type;
427 __u8 chan_policy;
429 __le16 sport;
431 __u8 sec_level;
433 __u8 ident;
435 __u8 conf_req[64];
436 __u8 conf_len;
437 __u8 num_conf_req;
438 __u8 num_conf_rsp;
440 __u8 fcs;
442 __u16 tx_win;
443 __u16 tx_win_max;
444 __u8 max_tx;
445 __u16 retrans_timeout;
446 __u16 monitor_timeout;
447 __u16 mps;
449 unsigned long conf_state;
450 unsigned long conn_state;
451 unsigned long flags;
453 __u16 next_tx_seq;
454 __u16 expected_ack_seq;
455 __u16 expected_tx_seq;
456 __u16 buffer_seq;
457 __u16 buffer_seq_srej;
458 __u16 srej_save_reqseq;
459 __u16 frames_sent;
460 __u16 unacked_frames;
461 __u8 retry_count;
462 __u8 num_acked;
463 __u16 sdu_len;
464 struct sk_buff *sdu;
465 struct sk_buff *sdu_last_frag;
467 __u16 remote_tx_win;
468 __u8 remote_max_tx;
469 __u16 remote_mps;
471 __u8 local_id;
472 __u8 local_stype;
473 __u16 local_msdu;
474 __u32 local_sdu_itime;
475 __u32 local_acc_lat;
476 __u32 local_flush_to;
478 __u8 remote_id;
479 __u8 remote_stype;
480 __u16 remote_msdu;
481 __u32 remote_sdu_itime;
482 __u32 remote_acc_lat;
483 __u32 remote_flush_to;
485 struct delayed_work chan_timer;
486 struct delayed_work retrans_timer;
487 struct delayed_work monitor_timer;
488 struct delayed_work ack_timer;
490 struct sk_buff *tx_send_head;
491 struct sk_buff_head tx_q;
492 struct sk_buff_head srej_q;
493 struct list_head srej_l;
495 struct list_head list;
496 struct list_head global_l;
498 void *data;
499 struct l2cap_ops *ops;
502 struct l2cap_ops {
503 char *name;
505 struct l2cap_chan *(*new_connection) (void *data);
506 int (*recv) (void *data, struct sk_buff *skb);
507 void (*close) (void *data);
508 void (*state_change) (void *data, int state);
511 struct l2cap_conn {
512 struct hci_conn *hcon;
513 struct hci_chan *hchan;
515 bdaddr_t *dst;
516 bdaddr_t *src;
518 unsigned int mtu;
520 __u32 feat_mask;
522 __u8 info_state;
523 __u8 info_ident;
525 struct delayed_work info_timer;
527 spinlock_t lock;
529 struct sk_buff *rx_skb;
530 __u32 rx_len;
531 __u8 tx_ident;
533 __u8 disc_reason;
535 struct delayed_work security_timer;
536 struct smp_chan *smp_chan;
538 struct list_head chan_l;
539 struct mutex chan_lock;
542 #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01
543 #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04
544 #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08
546 #define L2CAP_CHAN_RAW 1
547 #define L2CAP_CHAN_CONN_LESS 2
548 #define L2CAP_CHAN_CONN_ORIENTED 3
550 /* ----- L2CAP socket info ----- */
551 #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
553 struct l2cap_pinfo {
554 struct bt_sock bt;
555 struct l2cap_chan *chan;
556 struct sk_buff *rx_busy_skb;
559 enum {
560 CONF_REQ_SENT,
561 CONF_INPUT_DONE,
562 CONF_OUTPUT_DONE,
563 CONF_MTU_DONE,
564 CONF_MODE_DONE,
565 CONF_CONNECT_PEND,
566 CONF_NO_FCS_RECV,
567 CONF_STATE2_DEVICE,
568 CONF_EWS_RECV,
569 CONF_LOC_CONF_PEND,
570 CONF_REM_CONF_PEND,
573 #define L2CAP_CONF_MAX_CONF_REQ 2
574 #define L2CAP_CONF_MAX_CONF_RSP 2
576 enum {
577 CONN_SREJ_SENT,
578 CONN_WAIT_F,
579 CONN_SREJ_ACT,
580 CONN_SEND_PBIT,
581 CONN_REMOTE_BUSY,
582 CONN_LOCAL_BUSY,
583 CONN_REJ_ACT,
584 CONN_SEND_FBIT,
585 CONN_RNR_SENT,
588 /* Definitions for flags in l2cap_chan */
589 enum {
590 FLAG_ROLE_SWITCH,
591 FLAG_FORCE_ACTIVE,
592 FLAG_FORCE_RELIABLE,
593 FLAG_FLUSHABLE,
594 FLAG_EXT_CTRL,
595 FLAG_EFS_ENABLE,
598 static inline void l2cap_chan_hold(struct l2cap_chan *c)
600 atomic_inc(&c->refcnt);
603 static inline void l2cap_chan_put(struct l2cap_chan *c)
605 if (atomic_dec_and_test(&c->refcnt))
606 kfree(c);
609 static inline void l2cap_set_timer(struct l2cap_chan *chan,
610 struct delayed_work *work, long timeout)
612 BT_DBG("chan %p state %d timeout %ld", chan, chan->state, timeout);
614 if (!cancel_delayed_work(work))
615 l2cap_chan_hold(chan);
616 schedule_delayed_work(work, timeout);
619 static inline void l2cap_clear_timer(struct l2cap_chan *chan,
620 struct delayed_work *work)
622 if (cancel_delayed_work(work))
623 l2cap_chan_put(chan);
626 #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t))
627 #define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer)
628 #define __set_retrans_timer(c) l2cap_set_timer(c, &c->retrans_timer, \
629 msecs_to_jiffies(L2CAP_DEFAULT_RETRANS_TO));
630 #define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer)
631 #define __set_monitor_timer(c) l2cap_set_timer(c, &c->monitor_timer, \
632 msecs_to_jiffies(L2CAP_DEFAULT_MONITOR_TO));
633 #define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer)
634 #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \
635 msecs_to_jiffies(L2CAP_DEFAULT_ACK_TO));
636 #define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer)
638 static inline int __seq_offset(struct l2cap_chan *chan, __u16 seq1, __u16 seq2)
640 int offset;
642 offset = (seq1 - seq2) % (chan->tx_win_max + 1);
643 if (offset < 0)
644 offset += (chan->tx_win_max + 1);
646 return offset;
649 static inline __u16 __next_seq(struct l2cap_chan *chan, __u16 seq)
651 return (seq + 1) % (chan->tx_win_max + 1);
654 static inline int l2cap_tx_window_full(struct l2cap_chan *ch)
656 int sub;
658 sub = (ch->next_tx_seq - ch->expected_ack_seq) % 64;
660 if (sub < 0)
661 sub += 64;
663 return sub == ch->remote_tx_win;
666 static inline __u16 __get_reqseq(struct l2cap_chan *chan, __u32 ctrl)
668 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
669 return (ctrl & L2CAP_EXT_CTRL_REQSEQ) >>
670 L2CAP_EXT_CTRL_REQSEQ_SHIFT;
671 else
672 return (ctrl & L2CAP_CTRL_REQSEQ) >> L2CAP_CTRL_REQSEQ_SHIFT;
675 static inline __u32 __set_reqseq(struct l2cap_chan *chan, __u32 reqseq)
677 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
678 return (reqseq << L2CAP_EXT_CTRL_REQSEQ_SHIFT) &
679 L2CAP_EXT_CTRL_REQSEQ;
680 else
681 return (reqseq << L2CAP_CTRL_REQSEQ_SHIFT) & L2CAP_CTRL_REQSEQ;
684 static inline __u16 __get_txseq(struct l2cap_chan *chan, __u32 ctrl)
686 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
687 return (ctrl & L2CAP_EXT_CTRL_TXSEQ) >>
688 L2CAP_EXT_CTRL_TXSEQ_SHIFT;
689 else
690 return (ctrl & L2CAP_CTRL_TXSEQ) >> L2CAP_CTRL_TXSEQ_SHIFT;
693 static inline __u32 __set_txseq(struct l2cap_chan *chan, __u32 txseq)
695 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
696 return (txseq << L2CAP_EXT_CTRL_TXSEQ_SHIFT) &
697 L2CAP_EXT_CTRL_TXSEQ;
698 else
699 return (txseq << L2CAP_CTRL_TXSEQ_SHIFT) & L2CAP_CTRL_TXSEQ;
702 static inline bool __is_sframe(struct l2cap_chan *chan, __u32 ctrl)
704 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
705 return ctrl & L2CAP_EXT_CTRL_FRAME_TYPE;
706 else
707 return ctrl & L2CAP_CTRL_FRAME_TYPE;
710 static inline __u32 __set_sframe(struct l2cap_chan *chan)
712 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
713 return L2CAP_EXT_CTRL_FRAME_TYPE;
714 else
715 return L2CAP_CTRL_FRAME_TYPE;
718 static inline __u8 __get_ctrl_sar(struct l2cap_chan *chan, __u32 ctrl)
720 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
721 return (ctrl & L2CAP_EXT_CTRL_SAR) >> L2CAP_EXT_CTRL_SAR_SHIFT;
722 else
723 return (ctrl & L2CAP_CTRL_SAR) >> L2CAP_CTRL_SAR_SHIFT;
726 static inline __u32 __set_ctrl_sar(struct l2cap_chan *chan, __u32 sar)
728 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
729 return (sar << L2CAP_EXT_CTRL_SAR_SHIFT) & L2CAP_EXT_CTRL_SAR;
730 else
731 return (sar << L2CAP_CTRL_SAR_SHIFT) & L2CAP_CTRL_SAR;
734 static inline bool __is_sar_start(struct l2cap_chan *chan, __u32 ctrl)
736 return __get_ctrl_sar(chan, ctrl) == L2CAP_SAR_START;
739 static inline __u32 __get_sar_mask(struct l2cap_chan *chan)
741 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
742 return L2CAP_EXT_CTRL_SAR;
743 else
744 return L2CAP_CTRL_SAR;
747 static inline __u8 __get_ctrl_super(struct l2cap_chan *chan, __u32 ctrl)
749 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
750 return (ctrl & L2CAP_EXT_CTRL_SUPERVISE) >>
751 L2CAP_EXT_CTRL_SUPER_SHIFT;
752 else
753 return (ctrl & L2CAP_CTRL_SUPERVISE) >> L2CAP_CTRL_SUPER_SHIFT;
756 static inline __u32 __set_ctrl_super(struct l2cap_chan *chan, __u32 super)
758 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
759 return (super << L2CAP_EXT_CTRL_SUPER_SHIFT) &
760 L2CAP_EXT_CTRL_SUPERVISE;
761 else
762 return (super << L2CAP_CTRL_SUPER_SHIFT) &
763 L2CAP_CTRL_SUPERVISE;
766 static inline __u32 __set_ctrl_final(struct l2cap_chan *chan)
768 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
769 return L2CAP_EXT_CTRL_FINAL;
770 else
771 return L2CAP_CTRL_FINAL;
774 static inline bool __is_ctrl_final(struct l2cap_chan *chan, __u32 ctrl)
776 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
777 return ctrl & L2CAP_EXT_CTRL_FINAL;
778 else
779 return ctrl & L2CAP_CTRL_FINAL;
782 static inline __u32 __set_ctrl_poll(struct l2cap_chan *chan)
784 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
785 return L2CAP_EXT_CTRL_POLL;
786 else
787 return L2CAP_CTRL_POLL;
790 static inline bool __is_ctrl_poll(struct l2cap_chan *chan, __u32 ctrl)
792 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
793 return ctrl & L2CAP_EXT_CTRL_POLL;
794 else
795 return ctrl & L2CAP_CTRL_POLL;
798 static inline __u32 __get_control(struct l2cap_chan *chan, void *p)
800 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
801 return get_unaligned_le32(p);
802 else
803 return get_unaligned_le16(p);
806 static inline void __put_control(struct l2cap_chan *chan, __u32 control,
807 void *p)
809 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
810 return put_unaligned_le32(control, p);
811 else
812 return put_unaligned_le16(control, p);
815 static inline __u8 __ctrl_size(struct l2cap_chan *chan)
817 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
818 return L2CAP_EXT_HDR_SIZE - L2CAP_HDR_SIZE;
819 else
820 return L2CAP_ENH_HDR_SIZE - L2CAP_HDR_SIZE;
823 extern bool disable_ertm;
825 int l2cap_init_sockets(void);
826 void l2cap_cleanup_sockets(void);
828 void __l2cap_connect_rsp_defer(struct l2cap_chan *chan);
829 int __l2cap_wait_ack(struct sock *sk);
831 int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm);
832 int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid);
834 struct l2cap_chan *l2cap_chan_create(struct sock *sk);
835 void l2cap_chan_close(struct l2cap_chan *chan, int reason);
836 void l2cap_chan_destroy(struct l2cap_chan *chan);
837 int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
838 bdaddr_t *dst);
839 int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len,
840 u32 priority);
841 void l2cap_chan_busy(struct l2cap_chan *chan, int busy);
842 int l2cap_chan_check_security(struct l2cap_chan *chan);
844 #endif /* __L2CAP_H */