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Bluetooth: replace list_for_each with list_for_each_entry whenever possible
[mirror_ubuntu-jammy-kernel.git] / include / net / bluetooth / l2cap.h
CommitLineData
be21871f 1/*
1da177e4
LT		 2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (C) 2000-2001 Qualcomm Incorporated
ce5706bd 4 Copyright (C) 2009-2010 Gustavo F. Padovan <gustavo@padovan.org>
5d8868ff 5 Copyright (C) 2010 Google Inc.
1da177e4
LT		 6
7 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
8
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;
12
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
be21871f
AE		 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
1da177e4
LT		 20 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21
be21871f
AE		 22 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
23 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
1da177e4
LT		 24 SOFTWARE IS DISCLAIMED.
25*/
26
27#ifndef __L2CAP_H
28#define __L2CAP_H
29
88843ab0
AE		 30#include <asm/unaligned.h>
31
1da177e4 32/* L2CAP defaults */
47ec1dcd 33#define L2CAP_DEFAULT_MTU 672
f2fcfcd6 34#define L2CAP_DEFAULT_MIN_MTU 48
47ec1dcd 35#define L2CAP_DEFAULT_FLUSH_TO 0xffff
1c2acffb 36#define L2CAP_DEFAULT_TX_WINDOW 63
6327eb98 37#define L2CAP_DEFAULT_EXT_WINDOW 0x3FFF
e90bac06 38#define L2CAP_DEFAULT_MAX_TX 3
fa235562 39#define L2CAP_DEFAULT_RETRANS_TO 2000 /* 2 seconds */
e90bac06 40#define L2CAP_DEFAULT_MONITOR_TO 12000 /* 12 seconds */
db12d647 41#define L2CAP_DEFAULT_MAX_PDU_SIZE 1009 /* Sized for 3-DH5 packet */
c1b4f43b 42#define L2CAP_DEFAULT_ACK_TO 200
b62f328b 43#define L2CAP_LE_DEFAULT_MTU 23
8f7975b1
AE		 44#define L2CAP_DEFAULT_MAX_SDU_SIZE 0xFFFF
45#define L2CAP_DEFAULT_SDU_ITIME 0xFFFFFFFF
46#define L2CAP_DEFAULT_ACC_LAT 0xFFFFFFFF
1da177e4 47
4e8402a3
MH		 48#define L2CAP_CONN_TIMEOUT (40000) /* 40 seconds */
49#define L2CAP_INFO_TIMEOUT (4000) /* 4 seconds */
1da177e4
LT		 50
51/* L2CAP socket address */
52struct sockaddr_l2 {
53 sa_family_t l2_family;
8e036fc3 54 __le16 l2_psm;
1da177e4 55 bdaddr_t l2_bdaddr;
f29972de 56 __le16 l2_cid;
1da177e4
LT		 57};
58
59/* L2CAP socket options */
60#define L2CAP_OPTIONS 0x01
61struct l2cap_options {
62 __u16 omtu;
63 __u16 imtu;
64 __u16 flush_to;
65 __u8 mode;
fcc203c3 66 __u8 fcs;
68d7f0ce 67 __u8 max_tx;
14b5aa71 68 __u16 txwin_size;
1da177e4
LT		 69};
70
71#define L2CAP_CONNINFO 0x02
72struct l2cap_conninfo {
73 __u16 hci_handle;
74 __u8 dev_class[3];
75};
76
77#define L2CAP_LM 0x03
78#define L2CAP_LM_MASTER 0x0001
79#define L2CAP_LM_AUTH 0x0002
80#define L2CAP_LM_ENCRYPT 0x0004
81#define L2CAP_LM_TRUSTED 0x0008
82#define L2CAP_LM_RELIABLE 0x0010
83#define L2CAP_LM_SECURE 0x0020
84
85/* L2CAP command codes */
47ec1dcd
MH		 86#define L2CAP_COMMAND_REJ 0x01
87#define L2CAP_CONN_REQ 0x02
88#define L2CAP_CONN_RSP 0x03
89#define L2CAP_CONF_REQ 0x04
90#define L2CAP_CONF_RSP 0x05
91#define L2CAP_DISCONN_REQ 0x06
92#define L2CAP_DISCONN_RSP 0x07
93#define L2CAP_ECHO_REQ 0x08
94#define L2CAP_ECHO_RSP 0x09
95#define L2CAP_INFO_REQ 0x0a
96#define L2CAP_INFO_RSP 0x0b
3300d9a9
CT		 97#define L2CAP_CONN_PARAM_UPDATE_REQ 0x12
98#define L2CAP_CONN_PARAM_UPDATE_RSP 0x13
47ec1dcd 99
a858393b 100/* L2CAP extended feature mask */
47ec1dcd
MH		 101#define L2CAP_FEAT_FLOWCTL 0x00000001
102#define L2CAP_FEAT_RETRANS 0x00000002
a858393b 103#define L2CAP_FEAT_BIDIR_QOS 0x00000004
47ec1dcd
MH		 104#define L2CAP_FEAT_ERTM 0x00000008
105#define L2CAP_FEAT_STREAMING 0x00000010
106#define L2CAP_FEAT_FCS 0x00000020
a858393b 107#define L2CAP_FEAT_EXT_FLOW 0x00000040
47ec1dcd 108#define L2CAP_FEAT_FIXED_CHAN 0x00000080
a858393b
AE		 109#define L2CAP_FEAT_EXT_WINDOW 0x00000100
110#define L2CAP_FEAT_UCD 0x00000200
47ec1dcd
MH		 111
112/* L2CAP checksum option */
113#define L2CAP_FCS_NONE 0x00
114#define L2CAP_FCS_CRC16 0x01
1da177e4 115
1c2acffb 116/* L2CAP Control Field bit masks */
57253fd8
AE		 117#define L2CAP_CTRL_SAR 0xC000
118#define L2CAP_CTRL_REQSEQ 0x3F00
119#define L2CAP_CTRL_TXSEQ 0x007E
120#define L2CAP_CTRL_SUPERVISE 0x000C
121
122#define L2CAP_CTRL_RETRANS 0x0080
123#define L2CAP_CTRL_FINAL 0x0080
124#define L2CAP_CTRL_POLL 0x0010
125#define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */
126
127#define L2CAP_CTRL_TXSEQ_SHIFT 1
128#define L2CAP_CTRL_SUPER_SHIFT 2
129#define L2CAP_CTRL_REQSEQ_SHIFT 8
130#define L2CAP_CTRL_SAR_SHIFT 14
131
132/* L2CAP Extended Control Field bit mask */
133#define L2CAP_EXT_CTRL_TXSEQ 0xFFFC0000
134#define L2CAP_EXT_CTRL_SAR 0x00030000
135#define L2CAP_EXT_CTRL_SUPERVISE 0x00030000
136#define L2CAP_EXT_CTRL_REQSEQ 0x0000FFFC
137
138#define L2CAP_EXT_CTRL_POLL 0x00040000
139#define L2CAP_EXT_CTRL_FINAL 0x00000002
140#define L2CAP_EXT_CTRL_FRAME_TYPE 0x00000001 /* I- or S-Frame */
141
142#define L2CAP_EXT_CTRL_REQSEQ_SHIFT 2
143#define L2CAP_EXT_CTRL_SAR_SHIFT 16
144#define L2CAP_EXT_CTRL_SUPER_SHIFT 16
145#define L2CAP_EXT_CTRL_TXSEQ_SHIFT 18
1c2acffb
GP		 146
147/* L2CAP Supervisory Function */
ab784b73
AE		 148#define L2CAP_SUPER_RR 0x00
149#define L2CAP_SUPER_REJ 0x01
150#define L2CAP_SUPER_RNR 0x02
151#define L2CAP_SUPER_SREJ 0x03
1c2acffb
GP		 152
153/* L2CAP Segmentation and Reassembly */
7e0ef6ee
AE		 154#define L2CAP_SAR_UNSEGMENTED 0x00
155#define L2CAP_SAR_START 0x01
156#define L2CAP_SAR_END 0x02
157#define L2CAP_SAR_CONTINUE 0x03
1c2acffb 158
e2fd318e 159/* L2CAP Command rej. reasons */
8d6765aa
AE		 160#define L2CAP_REJ_NOT_UNDERSTOOD 0x0000
161#define L2CAP_REJ_MTU_EXCEEDED 0x0001
162#define L2CAP_REJ_INVALID_CID 0x0002
e2fd318e 163
1da177e4
LT		 164/* L2CAP structures */
165struct l2cap_hdr {
8e036fc3
AV		 166 __le16 len;
167 __le16 cid;
66c853cc 168} __packed;
1da177e4 169#define L2CAP_HDR_SIZE 4
d43cb289
AE		 170#define L2CAP_ENH_HDR_SIZE 6
171#define L2CAP_EXT_HDR_SIZE 8
172
173#define L2CAP_FCS_SIZE 2
174#define L2CAP_SDULEN_SIZE 2
175#define L2CAP_PSMLEN_SIZE 2
1da177e4
LT		 176
177struct l2cap_cmd_hdr {
178 __u8 code;
179 __u8 ident;
8e036fc3 180 __le16 len;
66c853cc 181} __packed;
1da177e4
LT		 182#define L2CAP_CMD_HDR_SIZE 4
183
e2fd318e
IK		 184struct l2cap_cmd_rej_unk {
185 __le16 reason;
186} __packed;
187
188struct l2cap_cmd_rej_mtu {
8e036fc3 189 __le16 reason;
e2fd318e
IK		 190 __le16 max_mtu;
191} __packed;
192
193struct l2cap_cmd_rej_cid {
194 __le16 reason;
195 __le16 scid;
196 __le16 dcid;
66c853cc 197} __packed;
1da177e4
LT		 198
199struct l2cap_conn_req {
8e036fc3
AV		 200 __le16 psm;
201 __le16 scid;
66c853cc 202} __packed;
1da177e4
LT		 203
204struct l2cap_conn_rsp {
8e036fc3
AV		 205 __le16 dcid;
206 __le16 scid;
207 __le16 result;
208 __le16 status;
66c853cc 209} __packed;
1da177e4 210
8db4dc46
GP		 211/* channel indentifier */
212#define L2CAP_CID_SIGNALING 0x0001
213#define L2CAP_CID_CONN_LESS 0x0002
acd7d370
VT		 214#define L2CAP_CID_LE_DATA 0x0004
215#define L2CAP_CID_LE_SIGNALING 0x0005
216#define L2CAP_CID_SMP 0x0006
8db4dc46
GP		 217#define L2CAP_CID_DYN_START 0x0040
218#define L2CAP_CID_DYN_END 0xffff
219
1da177e4 220/* connect result */
47ec1dcd
MH		 221#define L2CAP_CR_SUCCESS 0x0000
222#define L2CAP_CR_PEND 0x0001
223#define L2CAP_CR_BAD_PSM 0x0002
224#define L2CAP_CR_SEC_BLOCK 0x0003
225#define L2CAP_CR_NO_MEM 0x0004
1da177e4
LT		 226
227/* connect status */
47ec1dcd
MH		 228#define L2CAP_CS_NO_INFO 0x0000
229#define L2CAP_CS_AUTHEN_PEND 0x0001
230#define L2CAP_CS_AUTHOR_PEND 0x0002
1da177e4
LT		 231
232struct l2cap_conf_req {
8e036fc3
AV		 233 __le16 dcid;
234 __le16 flags;
1da177e4 235 __u8 data[0];
66c853cc 236} __packed;
1da177e4
LT		 237
238struct l2cap_conf_rsp {
8e036fc3
AV		 239 __le16 scid;
240 __le16 flags;
241 __le16 result;
1da177e4 242 __u8 data[0];
66c853cc 243} __packed;
1da177e4 244
5dee9e7c
MH		 245#define L2CAP_CONF_SUCCESS 0x0000
246#define L2CAP_CONF_UNACCEPT 0x0001
247#define L2CAP_CONF_REJECT 0x0002
248#define L2CAP_CONF_UNKNOWN 0x0003
0e8b207e 249#define L2CAP_CONF_PENDING 0x0004
5a9e7057 250#define L2CAP_CONF_EFS_REJECT 0x0005
1da177e4
LT		 251
252struct l2cap_conf_opt {
253 __u8 type;
254 __u8 len;
255 __u8 val[0];
66c853cc 256} __packed;
1da177e4
LT		 257#define L2CAP_CONF_OPT_SIZE 2
258
589d2746 259#define L2CAP_CONF_HINT 0x80
47ec1dcd 260#define L2CAP_CONF_MASK 0x7f
589d2746 261
1da177e4
LT		 262#define L2CAP_CONF_MTU 0x01
263#define L2CAP_CONF_FLUSH_TO 0x02
264#define L2CAP_CONF_QOS 0x03
265#define L2CAP_CONF_RFC 0x04
47ec1dcd 266#define L2CAP_CONF_FCS 0x05
5a9e7057 267#define L2CAP_CONF_EFS 0x06
6327eb98 268#define L2CAP_CONF_EWS 0x07
1da177e4
LT		 269
270#define L2CAP_CONF_MAX_SIZE 22
271
6464f35f
MH		 272struct l2cap_conf_rfc {
273 __u8 mode;
274 __u8 txwin_size;
275 __u8 max_transmit;
276 __le16 retrans_timeout;
277 __le16 monitor_timeout;
278 __le16 max_pdu_size;
66c853cc 279} __packed;
6464f35f
MH		 280
281#define L2CAP_MODE_BASIC 0x00
282#define L2CAP_MODE_RETRANS 0x01
283#define L2CAP_MODE_FLOWCTL 0x02
47ec1dcd 284#define L2CAP_MODE_ERTM 0x03
c6b03cf9 285#define L2CAP_MODE_STREAMING 0x04
6464f35f 286
5a9e7057
AE		 287struct l2cap_conf_efs {
288 __u8 id;
289 __u8 stype;
290 __le16 msdu;
291 __le32 sdu_itime;
292 __le32 acc_lat;
293 __le32 flush_to;
294} __packed;
295
8f7975b1
AE		 296#define L2CAP_SERV_NOTRAFIC 0x00
297#define L2CAP_SERV_BESTEFFORT 0x01
298#define L2CAP_SERV_GUARANTEED 0x02
299
300#define L2CAP_BESTEFFORT_ID 0x01
301
1da177e4 302struct l2cap_disconn_req {
8e036fc3
AV		 303 __le16 dcid;
304 __le16 scid;
66c853cc 305} __packed;
1da177e4
LT		 306
307struct l2cap_disconn_rsp {
8e036fc3
AV		 308 __le16 dcid;
309 __le16 scid;
66c853cc 310} __packed;
1da177e4
LT		 311
312struct l2cap_info_req {
8e036fc3 313 __le16 type;
66c853cc 314} __packed;
1da177e4
LT		 315
316struct l2cap_info_rsp {
8e036fc3
AV		 317 __le16 type;
318 __le16 result;
1da177e4 319 __u8 data[0];
66c853cc 320} __packed;
1da177e4
LT		 321
322/* info type */
8d6765aa
AE		 323#define L2CAP_IT_CL_MTU 0x0001
324#define L2CAP_IT_FEAT_MASK 0x0002
325#define L2CAP_IT_FIXED_CHAN 0x0003
1da177e4
LT		 326
327/* info result */
8d6765aa
AE		 328#define L2CAP_IR_SUCCESS 0x0000
329#define L2CAP_IR_NOTSUPP 0x0001
1da177e4 330
de73115a
CT		 331struct l2cap_conn_param_update_req {
332 __le16 min;
333 __le16 max;
334 __le16 latency;
335 __le16 to_multiplier;
336} __packed;
337
338struct l2cap_conn_param_update_rsp {
339 __le16 result;
340} __packed;
341
342/* Connection Parameters result */
343#define L2CAP_CONN_PARAM_ACCEPTED 0x0000
344#define L2CAP_CONN_PARAM_REJECTED 0x0001
345
48454079 346/* ----- L2CAP channels and connections ----- */
39d5a3ee 347struct srej_list {
fb45de7d 348 __u16 tx_seq;
39d5a3ee
GP		 349 struct list_head list;
350};
351
48454079
GP		 352struct l2cap_chan {
353 struct sock *sk;
8c1d787b
GP		 354
355 struct l2cap_conn *conn;
356
89bc500e
GP		 357 __u8 state;
358
71ba0e56
GP		 359 atomic_t refcnt;
360
fe4128e0
GP		 361 __le16 psm;
362 __u16 dcid;
363 __u16 scid;
4343478f 364
0c1bc5c6
GP		 365 __u16 imtu;
366 __u16 omtu;
367 __u16 flush_to;
368 __u8 mode;
715ec005 369 __u8 chan_type;
0c1bc5c6
GP		 370
371 __le16 sport;
372
4343478f 373 __u8 sec_level;
4343478f 374
fc7f8a7e
GP		 375 __u8 ident;
376
73ffa904
GP		 377 __u8 conf_req[64];
378 __u8 conf_len;
379 __u8 num_conf_req;
380 __u8 num_conf_rsp;
381
47d1ec61
GP		 382 __u8 fcs;
383
6327eb98 384 __u16 tx_win;
836be934 385 __u16 tx_win_max;
47d1ec61
GP		 386 __u8 max_tx;
387 __u16 retrans_timeout;
388 __u16 monitor_timeout;
389 __u16 mps;
390
c1360a1c 391 unsigned long conf_state;
e2ab4353 392 unsigned long conn_state;
d57b0e8b 393 unsigned long flags;
525cd185 394
fb45de7d
AE		 395 __u16 next_tx_seq;
396 __u16 expected_ack_seq;
397 __u16 expected_tx_seq;
0b209fae 398 __u16 buffer_seq;
fb45de7d
AE		 399 __u16 buffer_seq_srej;
400 __u16 srej_save_reqseq;
401 __u16 frames_sent;
402 __u16 unacked_frames;
6a026610
GP		 403 __u8 retry_count;
404 __u8 num_acked;
6f61fd47 405 __u16 sdu_len;
6f61fd47 406 struct sk_buff *sdu;
84084a31 407 struct sk_buff *sdu_last_frag;
6f61fd47 408
6327eb98 409 __u16 remote_tx_win;
2c03a7a4
GP		 410 __u8 remote_max_tx;
411 __u16 remote_mps;
42e5c802 412
5a9e7057
AE		 413 __u8 local_id;
414 __u8 local_stype;
415 __u16 local_msdu;
416 __u32 local_sdu_itime;
417 __u32 local_acc_lat;
418 __u32 local_flush_to;
419
420 __u8 remote_id;
421 __u8 remote_stype;
422 __u16 remote_msdu;
423 __u32 remote_sdu_itime;
424 __u32 remote_acc_lat;
425 __u32 remote_flush_to;
426
ab07801d 427 struct timer_list chan_timer;
e92c8e70
GP		 428 struct timer_list retrans_timer;
429 struct timer_list monitor_timer;
430 struct timer_list ack_timer;
58d35f87
GP		 431 struct sk_buff *tx_send_head;
432 struct sk_buff_head tx_q;
f1c6775b 433 struct sk_buff_head srej_q;
39d5a3ee 434 struct list_head srej_l;
e92c8e70 435
baa7e1fa 436 struct list_head list;
23691d75 437 struct list_head global_l;
80808e43
GP		 438
439 void *data;
440 struct l2cap_ops *ops;
441};
442
443struct l2cap_ops {
444 char *name;
445
446 struct l2cap_chan *(*new_connection) (void *data);
23070494 447 int (*recv) (void *data, struct sk_buff *skb);
ba3bd0ee 448 void (*close) (void *data);
89bc500e 449 void (*state_change) (void *data, int state);
1da177e4
LT		 450};
451
452struct l2cap_conn {
453 struct hci_conn *hcon;
454
455 bdaddr_t *dst;
456 bdaddr_t *src;
457
458 unsigned int mtu;
459
4e8402a3
MH		 460 __u32 feat_mask;
461
462 __u8 info_state;
463 __u8 info_ident;
464
465 struct timer_list info_timer;
466
1da177e4
LT		 467 spinlock_t lock;
468
469 struct sk_buff *rx_skb;
470 __u32 rx_len;
1da177e4
LT		 471 __u8 tx_ident;
472
2950f21a
MH		 473 __u8 disc_reason;
474
5d3de7df 475 struct timer_list security_timer;
1c1def09 476 struct smp_chan *smp_chan;
5d3de7df 477
baa7e1fa
GP		 478 struct list_head chan_l;
479 rwlock_t chan_lock;
1da177e4
LT		 480};
481
4e8402a3 482#define L2CAP_INFO_CL_MTU_REQ_SENT 0x01
984947dc
MH		 483#define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04
484#define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08
4e8402a3 485
715ec005
GP		 486#define L2CAP_CHAN_RAW 1
487#define L2CAP_CHAN_CONN_LESS 2
488#define L2CAP_CHAN_CONN_ORIENTED 3
489
48454079 490/* ----- L2CAP socket info ----- */
1da177e4
LT		 491#define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
492
493struct l2cap_pinfo {
494 struct bt_sock bt;
48454079 495 struct l2cap_chan *chan;
e328140f 496 struct sk_buff *rx_busy_skb;
1da177e4
LT		 497};
498
c1360a1c
GP		 499enum {
500 CONF_REQ_SENT,
501 CONF_INPUT_DONE,
502 CONF_OUTPUT_DONE,
503 CONF_MTU_DONE,
504 CONF_MODE_DONE,
505 CONF_CONNECT_PEND,
506 CONF_NO_FCS_RECV,
507 CONF_STATE2_DEVICE,
6327eb98 508 CONF_EWS_RECV,
0e8b207e
AE		 509 CONF_LOC_CONF_PEND,
510 CONF_REM_CONF_PEND,
c1360a1c 511};
f2fcfcd6
GP		 512
513#define L2CAP_CONF_MAX_CONF_REQ 2
514#define L2CAP_CONF_MAX_CONF_RSP 2
861d6882 515
e2ab4353 516enum {
e2ab4353
GP		 517 CONN_SREJ_SENT,
518 CONN_WAIT_F,
519 CONN_SREJ_ACT,
520 CONN_SEND_PBIT,
521 CONN_REMOTE_BUSY,
522 CONN_LOCAL_BUSY,
523 CONN_REJ_ACT,
524 CONN_SEND_FBIT,
525 CONN_RNR_SENT,
e2ab4353 526};
e90bac06 527
d57b0e8b
AE		 528/* Definitions for flags in l2cap_chan */
529enum {
43bd0f32 530 FLAG_ROLE_SWITCH,
15770b1a 531 FLAG_FORCE_ACTIVE,
ecf61bdb 532 FLAG_FORCE_RELIABLE,
d57b0e8b 533 FLAG_FLUSHABLE,
6327eb98 534 FLAG_EXT_CTRL,
5a9e7057 535 FLAG_EFS_ENABLE,
d57b0e8b
AE		 536};
537
c9b66675
GP		 538#define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t))
539#define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer)
1a09bcb9
GP		 540#define __set_retrans_timer(c) l2cap_set_timer(c, &c->retrans_timer, \
541 L2CAP_DEFAULT_RETRANS_TO);
542#define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer)
543#define __set_monitor_timer(c) l2cap_set_timer(c, &c->monitor_timer, \
544 L2CAP_DEFAULT_MONITOR_TO);
545#define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer)
546#define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \
547 L2CAP_DEFAULT_ACK_TO);
548#define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer)
c74e560c 549
836be934
AE		 550static inline int __seq_offset(struct l2cap_chan *chan, __u16 seq1, __u16 seq2)
551{
552 int offset;
553
554 offset = (seq1 - seq2) % (chan->tx_win_max + 1);
555 if (offset < 0)
556 offset += (chan->tx_win_max + 1);
557
558 return offset;
559}
560
561static inline __u16 __next_seq(struct l2cap_chan *chan, __u16 seq)
562{
563 return (seq + 1) % (chan->tx_win_max + 1);
564}
565
42e5c802 566static inline int l2cap_tx_window_full(struct l2cap_chan *ch)
1c2acffb 567{
1c2acffb
GP		 568 int sub;
569
42e5c802 570 sub = (ch->next_tx_seq - ch->expected_ack_seq) % 64;
1c2acffb
GP		 571
572 if (sub < 0)
573 sub += 64;
574
2c03a7a4 575 return sub == ch->remote_tx_win;
1c2acffb
GP		 576}
577
0b209fae
AE		 578static inline __u16 __get_reqseq(struct l2cap_chan *chan, __u32 ctrl)
579{
580 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
581 return (ctrl & L2CAP_EXT_CTRL_REQSEQ) >>
582 L2CAP_EXT_CTRL_REQSEQ_SHIFT;
583 else
584 return (ctrl & L2CAP_CTRL_REQSEQ) >> L2CAP_CTRL_REQSEQ_SHIFT;
585}
586
587static inline __u32 __set_reqseq(struct l2cap_chan *chan, __u32 reqseq)
588{
589 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
590 return (reqseq << L2CAP_EXT_CTRL_REQSEQ_SHIFT) &
591 L2CAP_EXT_CTRL_REQSEQ;
592 else
593 return (reqseq << L2CAP_CTRL_REQSEQ_SHIFT) & L2CAP_CTRL_REQSEQ;
594}
fb45de7d
AE		 595
596static inline __u16 __get_txseq(struct l2cap_chan *chan, __u32 ctrl)
597{
598 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
599 return (ctrl & L2CAP_EXT_CTRL_TXSEQ) >>
600 L2CAP_EXT_CTRL_TXSEQ_SHIFT;
601 else
602 return (ctrl & L2CAP_CTRL_TXSEQ) >> L2CAP_CTRL_TXSEQ_SHIFT;
603}
604
605static inline __u32 __set_txseq(struct l2cap_chan *chan, __u32 txseq)
606{
607 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
608 return (txseq << L2CAP_EXT_CTRL_TXSEQ_SHIFT) &
609 L2CAP_EXT_CTRL_TXSEQ;
610 else
611 return (txseq << L2CAP_CTRL_TXSEQ_SHIFT) & L2CAP_CTRL_TXSEQ;
612}
613
793c2f1c
AE		 614static inline bool __is_sframe(struct l2cap_chan *chan, __u32 ctrl)
615{
616 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
617 return ctrl & L2CAP_EXT_CTRL_FRAME_TYPE;
618 else
619 return ctrl & L2CAP_CTRL_FRAME_TYPE;
620}
621
622static inline __u32 __set_sframe(struct l2cap_chan *chan)
623{
624 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
625 return L2CAP_EXT_CTRL_FRAME_TYPE;
626 else
627 return L2CAP_CTRL_FRAME_TYPE;
628}
629
7e0ef6ee
AE		 630static inline __u8 __get_ctrl_sar(struct l2cap_chan *chan, __u32 ctrl)
631{
632 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
633 return (ctrl & L2CAP_EXT_CTRL_SAR) >> L2CAP_EXT_CTRL_SAR_SHIFT;
634 else
635 return (ctrl & L2CAP_CTRL_SAR) >> L2CAP_CTRL_SAR_SHIFT;
636}
637
638static inline __u32 __set_ctrl_sar(struct l2cap_chan *chan, __u32 sar)
639{
640 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
641 return (sar << L2CAP_EXT_CTRL_SAR_SHIFT) & L2CAP_EXT_CTRL_SAR;
642 else
643 return (sar << L2CAP_CTRL_SAR_SHIFT) & L2CAP_CTRL_SAR;
644}
645
646static inline bool __is_sar_start(struct l2cap_chan *chan, __u32 ctrl)
647{
648 return __get_ctrl_sar(chan, ctrl) == L2CAP_SAR_START;
649}
650
651static inline __u32 __get_sar_mask(struct l2cap_chan *chan)
652{
653 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
654 return L2CAP_EXT_CTRL_SAR;
655 else
656 return L2CAP_CTRL_SAR;
657}
1da177e4 658
ab784b73
AE		 659static inline __u8 __get_ctrl_super(struct l2cap_chan *chan, __u32 ctrl)
660{
661 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
662 return (ctrl & L2CAP_EXT_CTRL_SUPERVISE) >>
663 L2CAP_EXT_CTRL_SUPER_SHIFT;
664 else
665 return (ctrl & L2CAP_CTRL_SUPERVISE) >> L2CAP_CTRL_SUPER_SHIFT;
666}
667
668static inline __u32 __set_ctrl_super(struct l2cap_chan *chan, __u32 super)
669{
670 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
671 return (super << L2CAP_EXT_CTRL_SUPER_SHIFT) &
672 L2CAP_EXT_CTRL_SUPERVISE;
673 else
674 return (super << L2CAP_CTRL_SUPER_SHIFT) &
675 L2CAP_CTRL_SUPERVISE;
676}
677
03f6715d
AE		 678static inline __u32 __set_ctrl_final(struct l2cap_chan *chan)
679{
680 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
681 return L2CAP_EXT_CTRL_FINAL;
682 else
683 return L2CAP_CTRL_FINAL;
684}
685
686static inline bool __is_ctrl_final(struct l2cap_chan *chan, __u32 ctrl)
687{
688 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
689 return ctrl & L2CAP_EXT_CTRL_FINAL;
690 else
691 return ctrl & L2CAP_CTRL_FINAL;
692}
e3781735
AE		 693
694static inline __u32 __set_ctrl_poll(struct l2cap_chan *chan)
695{
696 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
697 return L2CAP_EXT_CTRL_POLL;
698 else
699 return L2CAP_CTRL_POLL;
700}
701
702static inline bool __is_ctrl_poll(struct l2cap_chan *chan, __u32 ctrl)
703{
704 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
705 return ctrl & L2CAP_EXT_CTRL_POLL;
706 else
707 return ctrl & L2CAP_CTRL_POLL;
708}
88843ab0
AE		 709
710static inline __u32 __get_control(struct l2cap_chan *chan, void *p)
711{
712 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
713 return get_unaligned_le32(p);
714 else
715 return get_unaligned_le16(p);
716}
717
718static inline void __put_control(struct l2cap_chan *chan, __u32 control,
719 void *p)
720{
721 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
722 return put_unaligned_le32(control, p);
723 else
724 return put_unaligned_le16(control, p);
725}
726
727static inline __u8 __ctrl_size(struct l2cap_chan *chan)
728{
729 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
730 return L2CAP_EXT_HDR_SIZE - L2CAP_HDR_SIZE;
731 else
732 return L2CAP_ENH_HDR_SIZE - L2CAP_HDR_SIZE;
733}
734
bb58f747 735extern int disable_ertm;
bb58f747
GP		 736
737int l2cap_init_sockets(void);
738void l2cap_cleanup_sockets(void);
739
8c1d787b 740void __l2cap_connect_rsp_defer(struct l2cap_chan *chan);
dcba0dba 741int __l2cap_wait_ack(struct sock *sk);
68983259 742
9e4425ff
GP		 743int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm);
744int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid);
745
23691d75 746struct l2cap_chan *l2cap_chan_create(struct sock *sk);
0f852724 747void l2cap_chan_close(struct l2cap_chan *chan, int reason);
23691d75 748void l2cap_chan_destroy(struct l2cap_chan *chan);
77a74c7e 749int l2cap_chan_connect(struct l2cap_chan *chan);
9a91a04a 750int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len);
e328140f 751void l2cap_chan_busy(struct l2cap_chan *chan, int busy);
bb58f747 752
1da177e4 753#endif /* __L2CAP_H */
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