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Bluetooth: Remove sk parameter from l2cap_chan_create()
[deliverable/linux.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
ba13ccd9
MH		 48#define L2CAP_DISC_TIMEOUT msecs_to_jiffies(100)
49#define L2CAP_DISC_REJ_TIMEOUT msecs_to_jiffies(5000)
50#define L2CAP_ENC_TIMEOUT msecs_to_jiffies(5000)
51#define L2CAP_CONN_TIMEOUT msecs_to_jiffies(40000)
52#define L2CAP_INFO_TIMEOUT msecs_to_jiffies(4000)
1da177e4
LT		 53
54/* L2CAP socket address */
55struct sockaddr_l2 {
56 sa_family_t l2_family;
8e036fc3 57 __le16 l2_psm;
1da177e4 58 bdaddr_t l2_bdaddr;
f29972de 59 __le16 l2_cid;
1da177e4
LT		 60};
61
62/* L2CAP socket options */
63#define L2CAP_OPTIONS 0x01
64struct l2cap_options {
65 __u16 omtu;
66 __u16 imtu;
67 __u16 flush_to;
68 __u8 mode;
fcc203c3 69 __u8 fcs;
68d7f0ce 70 __u8 max_tx;
14b5aa71 71 __u16 txwin_size;
1da177e4
LT		 72};
73
74#define L2CAP_CONNINFO 0x02
75struct l2cap_conninfo {
76 __u16 hci_handle;
77 __u8 dev_class[3];
78};
79
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
87
88/* L2CAP command codes */
47ec1dcd
MH		 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
38094c75
MM		 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
3300d9a9
CT		 106#define L2CAP_CONN_PARAM_UPDATE_REQ 0x12
107#define L2CAP_CONN_PARAM_UPDATE_RSP 0x13
47ec1dcd 108
a858393b 109/* L2CAP extended feature mask */
47ec1dcd
MH		 110#define L2CAP_FEAT_FLOWCTL 0x00000001
111#define L2CAP_FEAT_RETRANS 0x00000002
a858393b 112#define L2CAP_FEAT_BIDIR_QOS 0x00000004
47ec1dcd
MH		 113#define L2CAP_FEAT_ERTM 0x00000008
114#define L2CAP_FEAT_STREAMING 0x00000010
115#define L2CAP_FEAT_FCS 0x00000020
a858393b 116#define L2CAP_FEAT_EXT_FLOW 0x00000040
47ec1dcd 117#define L2CAP_FEAT_FIXED_CHAN 0x00000080
a858393b
AE		 118#define L2CAP_FEAT_EXT_WINDOW 0x00000100
119#define L2CAP_FEAT_UCD 0x00000200
47ec1dcd
MH		 120
121/* L2CAP checksum option */
122#define L2CAP_FCS_NONE 0x00
123#define L2CAP_FCS_CRC16 0x01
1da177e4 124
d835ac0f
MM		 125/* L2CAP fixed channels */
126#define L2CAP_FC_L2CAP 0x02
127#define L2CAP_FC_A2MP 0x08
128
1c2acffb 129/* L2CAP Control Field bit masks */
57253fd8
AE		 130#define L2CAP_CTRL_SAR 0xC000
131#define L2CAP_CTRL_REQSEQ 0x3F00
132#define L2CAP_CTRL_TXSEQ 0x007E
133#define L2CAP_CTRL_SUPERVISE 0x000C
134
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 */
139
140#define L2CAP_CTRL_TXSEQ_SHIFT 1
141#define L2CAP_CTRL_SUPER_SHIFT 2
d5f7ac38
MM		 142#define L2CAP_CTRL_POLL_SHIFT 4
143#define L2CAP_CTRL_FINAL_SHIFT 7
57253fd8
AE		 144#define L2CAP_CTRL_REQSEQ_SHIFT 8
145#define L2CAP_CTRL_SAR_SHIFT 14
146
147/* L2CAP Extended Control Field bit mask */
148#define L2CAP_EXT_CTRL_TXSEQ 0xFFFC0000
149#define L2CAP_EXT_CTRL_SAR 0x00030000
150#define L2CAP_EXT_CTRL_SUPERVISE 0x00030000
151#define L2CAP_EXT_CTRL_REQSEQ 0x0000FFFC
152
153#define L2CAP_EXT_CTRL_POLL 0x00040000
154#define L2CAP_EXT_CTRL_FINAL 0x00000002
155#define L2CAP_EXT_CTRL_FRAME_TYPE 0x00000001 /* I- or S-Frame */
156
d5f7ac38 157#define L2CAP_EXT_CTRL_FINAL_SHIFT 1
57253fd8
AE		 158#define L2CAP_EXT_CTRL_REQSEQ_SHIFT 2
159#define L2CAP_EXT_CTRL_SAR_SHIFT 16
160#define L2CAP_EXT_CTRL_SUPER_SHIFT 16
d5f7ac38 161#define L2CAP_EXT_CTRL_POLL_SHIFT 18
57253fd8 162#define L2CAP_EXT_CTRL_TXSEQ_SHIFT 18
1c2acffb
GP		 163
164/* L2CAP Supervisory Function */
ab784b73
AE		 165#define L2CAP_SUPER_RR 0x00
166#define L2CAP_SUPER_REJ 0x01
167#define L2CAP_SUPER_RNR 0x02
168#define L2CAP_SUPER_SREJ 0x03
1c2acffb
GP		 169
170/* L2CAP Segmentation and Reassembly */
7e0ef6ee
AE		 171#define L2CAP_SAR_UNSEGMENTED 0x00
172#define L2CAP_SAR_START 0x01
173#define L2CAP_SAR_END 0x02
174#define L2CAP_SAR_CONTINUE 0x03
1c2acffb 175
e2fd318e 176/* L2CAP Command rej. reasons */
8d6765aa
AE		 177#define L2CAP_REJ_NOT_UNDERSTOOD 0x0000
178#define L2CAP_REJ_MTU_EXCEEDED 0x0001
179#define L2CAP_REJ_INVALID_CID 0x0002
e2fd318e 180
1da177e4
LT		 181/* L2CAP structures */
182struct l2cap_hdr {
8e036fc3
AV		 183 __le16 len;
184 __le16 cid;
66c853cc 185} __packed;
1da177e4 186#define L2CAP_HDR_SIZE 4
d43cb289
AE		 187#define L2CAP_ENH_HDR_SIZE 6
188#define L2CAP_EXT_HDR_SIZE 8
189
190#define L2CAP_FCS_SIZE 2
191#define L2CAP_SDULEN_SIZE 2
192#define L2CAP_PSMLEN_SIZE 2
d5f7ac38
MM		 193#define L2CAP_ENH_CTRL_SIZE 2
194#define L2CAP_EXT_CTRL_SIZE 4
1da177e4
LT		 195
196struct l2cap_cmd_hdr {
197 __u8 code;
198 __u8 ident;
8e036fc3 199 __le16 len;
66c853cc 200} __packed;
1da177e4
LT		 201#define L2CAP_CMD_HDR_SIZE 4
202
e2fd318e
IK		 203struct l2cap_cmd_rej_unk {
204 __le16 reason;
205} __packed;
206
207struct l2cap_cmd_rej_mtu {
8e036fc3 208 __le16 reason;
e2fd318e
IK		 209 __le16 max_mtu;
210} __packed;
211
212struct l2cap_cmd_rej_cid {
213 __le16 reason;
214 __le16 scid;
215 __le16 dcid;
66c853cc 216} __packed;
1da177e4
LT		 217
218struct l2cap_conn_req {
8e036fc3
AV		 219 __le16 psm;
220 __le16 scid;
66c853cc 221} __packed;
1da177e4
LT		 222
223struct l2cap_conn_rsp {
8e036fc3
AV		 224 __le16 dcid;
225 __le16 scid;
226 __le16 result;
227 __le16 status;
66c853cc 228} __packed;
1da177e4 229
8db4dc46
GP		 230/* channel indentifier */
231#define L2CAP_CID_SIGNALING 0x0001
232#define L2CAP_CID_CONN_LESS 0x0002
acd7d370
VT		 233#define L2CAP_CID_LE_DATA 0x0004
234#define L2CAP_CID_LE_SIGNALING 0x0005
235#define L2CAP_CID_SMP 0x0006
8db4dc46
GP		 236#define L2CAP_CID_DYN_START 0x0040
237#define L2CAP_CID_DYN_END 0xffff
238
38094c75 239/* connect/create channel results */
47ec1dcd
MH		 240#define L2CAP_CR_SUCCESS 0x0000
241#define L2CAP_CR_PEND 0x0001
242#define L2CAP_CR_BAD_PSM 0x0002
243#define L2CAP_CR_SEC_BLOCK 0x0003
244#define L2CAP_CR_NO_MEM 0x0004
38094c75 245#define L2CAP_CR_BAD_AMP 0x0005
1da177e4 246
38094c75 247/* connect/create channel status */
47ec1dcd
MH		 248#define L2CAP_CS_NO_INFO 0x0000
249#define L2CAP_CS_AUTHEN_PEND 0x0001
250#define L2CAP_CS_AUTHOR_PEND 0x0002
1da177e4
LT		 251
252struct l2cap_conf_req {
8e036fc3
AV		 253 __le16 dcid;
254 __le16 flags;
1da177e4 255 __u8 data[0];
66c853cc 256} __packed;
1da177e4
LT		 257
258struct l2cap_conf_rsp {
8e036fc3
AV		 259 __le16 scid;
260 __le16 flags;
261 __le16 result;
1da177e4 262 __u8 data[0];
66c853cc 263} __packed;
1da177e4 264
5dee9e7c
MH		 265#define L2CAP_CONF_SUCCESS 0x0000
266#define L2CAP_CONF_UNACCEPT 0x0001
267#define L2CAP_CONF_REJECT 0x0002
268#define L2CAP_CONF_UNKNOWN 0x0003
0e8b207e 269#define L2CAP_CONF_PENDING 0x0004
5a9e7057 270#define L2CAP_CONF_EFS_REJECT 0x0005
1da177e4
LT		 271
272struct l2cap_conf_opt {
273 __u8 type;
274 __u8 len;
275 __u8 val[0];
66c853cc 276} __packed;
1da177e4
LT		 277#define L2CAP_CONF_OPT_SIZE 2
278
589d2746 279#define L2CAP_CONF_HINT 0x80
47ec1dcd 280#define L2CAP_CONF_MASK 0x7f
589d2746 281
1da177e4
LT		 282#define L2CAP_CONF_MTU 0x01
283#define L2CAP_CONF_FLUSH_TO 0x02
284#define L2CAP_CONF_QOS 0x03
285#define L2CAP_CONF_RFC 0x04
47ec1dcd 286#define L2CAP_CONF_FCS 0x05
5a9e7057 287#define L2CAP_CONF_EFS 0x06
6327eb98 288#define L2CAP_CONF_EWS 0x07
1da177e4
LT		 289
290#define L2CAP_CONF_MAX_SIZE 22
291
6464f35f
MH		 292struct l2cap_conf_rfc {
293 __u8 mode;
294 __u8 txwin_size;
295 __u8 max_transmit;
296 __le16 retrans_timeout;
297 __le16 monitor_timeout;
298 __le16 max_pdu_size;
66c853cc 299} __packed;
6464f35f
MH		 300
301#define L2CAP_MODE_BASIC 0x00
302#define L2CAP_MODE_RETRANS 0x01
303#define L2CAP_MODE_FLOWCTL 0x02
47ec1dcd 304#define L2CAP_MODE_ERTM 0x03
c6b03cf9 305#define L2CAP_MODE_STREAMING 0x04
6464f35f 306
5a9e7057
AE		 307struct l2cap_conf_efs {
308 __u8 id;
309 __u8 stype;
310 __le16 msdu;
311 __le32 sdu_itime;
312 __le32 acc_lat;
313 __le32 flush_to;
314} __packed;
315
8f7975b1
AE		 316#define L2CAP_SERV_NOTRAFIC 0x00
317#define L2CAP_SERV_BESTEFFORT 0x01
318#define L2CAP_SERV_GUARANTEED 0x02
319
320#define L2CAP_BESTEFFORT_ID 0x01
321
1da177e4 322struct l2cap_disconn_req {
8e036fc3
AV		 323 __le16 dcid;
324 __le16 scid;
66c853cc 325} __packed;
1da177e4
LT		 326
327struct l2cap_disconn_rsp {
8e036fc3
AV		 328 __le16 dcid;
329 __le16 scid;
66c853cc 330} __packed;
1da177e4
LT		 331
332struct l2cap_info_req {
8e036fc3 333 __le16 type;
66c853cc 334} __packed;
1da177e4
LT		 335
336struct l2cap_info_rsp {
8e036fc3
AV		 337 __le16 type;
338 __le16 result;
1da177e4 339 __u8 data[0];
66c853cc 340} __packed;
1da177e4 341
38094c75
MM		 342struct l2cap_create_chan_req {
343 __le16 psm;
344 __le16 scid;
345 __u8 amp_id;
346} __packed;
347
348struct l2cap_create_chan_rsp {
349 __le16 dcid;
350 __le16 scid;
351 __le16 result;
352 __le16 status;
353} __packed;
354
355struct l2cap_move_chan_req {
356 __le16 icid;
357 __u8 dest_amp_id;
358} __packed;
359
360struct l2cap_move_chan_rsp {
361 __le16 icid;
362 __le16 result;
363} __packed;
364
365#define L2CAP_MR_SUCCESS 0x0000
366#define L2CAP_MR_PEND 0x0001
367#define L2CAP_MR_BAD_ID 0x0002
368#define L2CAP_MR_SAME_ID 0x0003
369#define L2CAP_MR_NOT_SUPP 0x0004
370#define L2CAP_MR_COLLISION 0x0005
371#define L2CAP_MR_NOT_ALLOWED 0x0006
372
373struct l2cap_move_chan_cfm {
374 __le16 icid;
375 __le16 result;
376} __packed;
377
378#define L2CAP_MC_CONFIRMED 0x0000
379#define L2CAP_MC_UNCONFIRMED 0x0001
380
381struct l2cap_move_chan_cfm_rsp {
382 __le16 icid;
383} __packed;
384
1da177e4 385/* info type */
8d6765aa
AE		 386#define L2CAP_IT_CL_MTU 0x0001
387#define L2CAP_IT_FEAT_MASK 0x0002
388#define L2CAP_IT_FIXED_CHAN 0x0003
1da177e4
LT		 389
390/* info result */
8d6765aa
AE		 391#define L2CAP_IR_SUCCESS 0x0000
392#define L2CAP_IR_NOTSUPP 0x0001
1da177e4 393
de73115a
CT		 394struct l2cap_conn_param_update_req {
395 __le16 min;
396 __le16 max;
397 __le16 latency;
398 __le16 to_multiplier;
399} __packed;
400
401struct l2cap_conn_param_update_rsp {
402 __le16 result;
403} __packed;
404
405/* Connection Parameters result */
406#define L2CAP_CONN_PARAM_ACCEPTED 0x0000
407#define L2CAP_CONN_PARAM_REJECTED 0x0001
408
48454079 409/* ----- L2CAP channels and connections ----- */
39d5a3ee 410struct srej_list {
fb45de7d 411 __u16 tx_seq;
39d5a3ee
GP		 412 struct list_head list;
413};
414
48454079
GP		 415struct l2cap_chan {
416 struct sock *sk;
8c1d787b
GP		 417
418 struct l2cap_conn *conn;
419
89bc500e
GP		 420 __u8 state;
421
71ba0e56
GP		 422 atomic_t refcnt;
423
fe4128e0
GP		 424 __le16 psm;
425 __u16 dcid;
426 __u16 scid;
4343478f 427
0c1bc5c6
GP		 428 __u16 imtu;
429 __u16 omtu;
430 __u16 flush_to;
431 __u8 mode;
715ec005 432 __u8 chan_type;
2ea66482 433 __u8 chan_policy;
0c1bc5c6
GP		 434
435 __le16 sport;
436
4343478f 437 __u8 sec_level;
4343478f 438
fc7f8a7e
GP		 439 __u8 ident;
440
73ffa904
GP		 441 __u8 conf_req[64];
442 __u8 conf_len;
443 __u8 num_conf_req;
444 __u8 num_conf_rsp;
445
47d1ec61
GP		 446 __u8 fcs;
447
6327eb98 448 __u16 tx_win;
836be934 449 __u16 tx_win_max;
47d1ec61
GP		 450 __u8 max_tx;
451 __u16 retrans_timeout;
452 __u16 monitor_timeout;
453 __u16 mps;
454
d5f7ac38
MM		 455 __u8 tx_state;
456 __u8 rx_state;
457
c1360a1c 458 unsigned long conf_state;
e2ab4353 459 unsigned long conn_state;
d57b0e8b 460 unsigned long flags;
525cd185 461
fb45de7d
AE		 462 __u16 next_tx_seq;
463 __u16 expected_ack_seq;
464 __u16 expected_tx_seq;
0b209fae 465 __u16 buffer_seq;
fb45de7d
AE		 466 __u16 buffer_seq_srej;
467 __u16 srej_save_reqseq;
d5f7ac38 468 __u16 last_acked_seq;
fb45de7d
AE		 469 __u16 frames_sent;
470 __u16 unacked_frames;
6a026610 471 __u8 retry_count;
d5f7ac38 472 __u16 srej_queue_next;
6a026610 473 __u8 num_acked;
6f61fd47 474 __u16 sdu_len;
6f61fd47 475 struct sk_buff *sdu;
84084a31 476 struct sk_buff *sdu_last_frag;
6f61fd47 477
6327eb98 478 __u16 remote_tx_win;
2c03a7a4
GP		 479 __u8 remote_max_tx;
480 __u16 remote_mps;
42e5c802 481
5a9e7057
AE		 482 __u8 local_id;
483 __u8 local_stype;
484 __u16 local_msdu;
485 __u32 local_sdu_itime;
486 __u32 local_acc_lat;
487 __u32 local_flush_to;
488
489 __u8 remote_id;
490 __u8 remote_stype;
491 __u16 remote_msdu;
492 __u32 remote_sdu_itime;
493 __u32 remote_acc_lat;
494 __u32 remote_flush_to;
495
721c4181
GP		 496 struct delayed_work chan_timer;
497 struct delayed_work retrans_timer;
498 struct delayed_work monitor_timer;
499 struct delayed_work ack_timer;
500
58d35f87
GP		 501 struct sk_buff *tx_send_head;
502 struct sk_buff_head tx_q;
f1c6775b 503 struct sk_buff_head srej_q;
39d5a3ee 504 struct list_head srej_l;
e92c8e70 505
f64b993f
GP		 506 struct list_head list;
507 struct list_head global_l;
80808e43 508
f64b993f
GP		 509 void *data;
510 struct l2cap_ops *ops;
c03b355e 511 struct mutex lock;
80808e43
GP		 512};
513
514struct l2cap_ops {
f64b993f 515 char *name;
80808e43
GP		 516
517 struct l2cap_chan *(*new_connection) (void *data);
23070494 518 int (*recv) (void *data, struct sk_buff *skb);
ba3bd0ee 519 void (*close) (void *data);
89bc500e 520 void (*state_change) (void *data, int state);
2f7719ce
AE		 521 struct sk_buff *(*alloc_skb) (struct l2cap_chan *chan,
522 unsigned long len, int nb, int *err);
523
1da177e4
LT		 524};
525
526struct l2cap_conn {
f64b993f
GP		 527 struct hci_conn *hcon;
528 struct hci_chan *hchan;
1da177e4 529
f64b993f
GP		 530 bdaddr_t *dst;
531 bdaddr_t *src;
1da177e4 532
f64b993f 533 unsigned int mtu;
1da177e4 534
f64b993f
GP		 535 __u32 feat_mask;
536 __u8 fixed_chan_mask;
4e8402a3 537
f64b993f
GP		 538 __u8 info_state;
539 __u8 info_ident;
4e8402a3 540
f64b993f 541 struct delayed_work info_timer;
4e8402a3 542
f64b993f 543 spinlock_t lock;
1da177e4 544
f64b993f
GP		 545 struct sk_buff *rx_skb;
546 __u32 rx_len;
547 __u8 tx_ident;
1da177e4 548
f64b993f 549 __u8 disc_reason;
2950f21a 550
f64b993f
GP		 551 struct delayed_work security_timer;
552 struct smp_chan *smp_chan;
5d3de7df 553
f64b993f
GP		 554 struct list_head chan_l;
555 struct mutex chan_lock;
1da177e4
LT		 556};
557
4e8402a3 558#define L2CAP_INFO_CL_MTU_REQ_SENT 0x01
984947dc
MH		 559#define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04
560#define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08
4e8402a3 561
715ec005
GP		 562#define L2CAP_CHAN_RAW 1
563#define L2CAP_CHAN_CONN_LESS 2
564#define L2CAP_CHAN_CONN_ORIENTED 3
565
48454079 566/* ----- L2CAP socket info ----- */
1da177e4
LT		 567#define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
568
569struct l2cap_pinfo {
f64b993f 570 struct bt_sock bt;
48454079 571 struct l2cap_chan *chan;
f64b993f 572 struct sk_buff *rx_busy_skb;
1da177e4
LT		 573};
574
c1360a1c
GP		 575enum {
576 CONF_REQ_SENT,
577 CONF_INPUT_DONE,
578 CONF_OUTPUT_DONE,
579 CONF_MTU_DONE,
580 CONF_MODE_DONE,
581 CONF_CONNECT_PEND,
582 CONF_NO_FCS_RECV,
583 CONF_STATE2_DEVICE,
6327eb98 584 CONF_EWS_RECV,
0e8b207e
AE		 585 CONF_LOC_CONF_PEND,
586 CONF_REM_CONF_PEND,
c1360a1c 587};
f2fcfcd6
GP		 588
589#define L2CAP_CONF_MAX_CONF_REQ 2
590#define L2CAP_CONF_MAX_CONF_RSP 2
861d6882 591
e2ab4353 592enum {
e2ab4353
GP		 593 CONN_SREJ_SENT,
594 CONN_WAIT_F,
595 CONN_SREJ_ACT,
596 CONN_SEND_PBIT,
597 CONN_REMOTE_BUSY,
598 CONN_LOCAL_BUSY,
599 CONN_REJ_ACT,
600 CONN_SEND_FBIT,
601 CONN_RNR_SENT,
e2ab4353 602};
e90bac06 603
d57b0e8b
AE		 604/* Definitions for flags in l2cap_chan */
605enum {
43bd0f32 606 FLAG_ROLE_SWITCH,
15770b1a 607 FLAG_FORCE_ACTIVE,
ecf61bdb 608 FLAG_FORCE_RELIABLE,
d57b0e8b 609 FLAG_FLUSHABLE,
6327eb98 610 FLAG_EXT_CTRL,
5a9e7057 611 FLAG_EFS_ENABLE,
d57b0e8b
AE		 612};
613
d5f7ac38
MM		 614enum {
615 L2CAP_TX_STATE_XMIT,
616 L2CAP_TX_STATE_WAIT_F,
617};
618
619enum {
620 L2CAP_RX_STATE_RECV,
621 L2CAP_RX_STATE_SREJ_SENT,
622};
623
624enum {
625 L2CAP_TXSEQ_EXPECTED,
626 L2CAP_TXSEQ_EXPECTED_SREJ,
627 L2CAP_TXSEQ_UNEXPECTED,
628 L2CAP_TXSEQ_UNEXPECTED_SREJ,
629 L2CAP_TXSEQ_DUPLICATE,
630 L2CAP_TXSEQ_DUPLICATE_SREJ,
631 L2CAP_TXSEQ_INVALID,
632 L2CAP_TXSEQ_INVALID_IGNORE,
633};
634
635enum {
636 L2CAP_EV_DATA_REQUEST,
637 L2CAP_EV_LOCAL_BUSY_DETECTED,
638 L2CAP_EV_LOCAL_BUSY_CLEAR,
639 L2CAP_EV_RECV_REQSEQ_AND_FBIT,
640 L2CAP_EV_RECV_FBIT,
641 L2CAP_EV_RETRANS_TO,
642 L2CAP_EV_MONITOR_TO,
643 L2CAP_EV_EXPLICIT_POLL,
644 L2CAP_EV_RECV_IFRAME,
645 L2CAP_EV_RECV_RR,
646 L2CAP_EV_RECV_REJ,
647 L2CAP_EV_RECV_RNR,
648 L2CAP_EV_RECV_SREJ,
649 L2CAP_EV_RECV_FRAME,
650};
651
371fd835
UF		 652static inline void l2cap_chan_hold(struct l2cap_chan *c)
653{
654 atomic_inc(&c->refcnt);
655}
656
657static inline void l2cap_chan_put(struct l2cap_chan *c)
658{
659 if (atomic_dec_and_test(&c->refcnt))
660 kfree(c);
661}
662
c03b355e
AE		 663static inline void l2cap_chan_lock(struct l2cap_chan *chan)
664{
665 mutex_lock(&chan->lock);
666}
667
668static inline void l2cap_chan_unlock(struct l2cap_chan *chan)
669{
670 mutex_unlock(&chan->lock);
671}
672
c2ec9c1b 673static inline void l2cap_set_timer(struct l2cap_chan *chan,
6f74b6f3 674 struct delayed_work *work, long timeout)
c2ec9c1b 675{
e05dcc32 676 BT_DBG("chan %p state %s timeout %ld", chan,
6f74b6f3 677 state_to_string(chan->state), timeout);
c2ec9c1b 678
6f74b6f3
AE		 679 /* If delayed work cancelled do not hold(chan)
680 since it is already done with previous set_timer */
17cd3f37 681 if (!cancel_delayed_work(work))
371fd835 682 l2cap_chan_hold(chan);
6f74b6f3 683
c2ec9c1b
GP		 684 schedule_delayed_work(work, timeout);
685}
686
75b93b59 687static inline bool l2cap_clear_timer(struct l2cap_chan *chan,
6f74b6f3 688 struct delayed_work *work)
c2ec9c1b 689{
75b93b59
SJ		 690 bool ret;
691
6f74b6f3
AE		 692 /* put(chan) if delayed work cancelled otherwise it
693 is done in delayed work function */
17cd3f37 694 ret = cancel_delayed_work(work);
75b93b59 695 if (ret)
371fd835 696 l2cap_chan_put(chan);
75b93b59
SJ		 697
698 return ret;
c2ec9c1b
GP		 699}
700
c9b66675
GP		 701#define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t))
702#define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer)
1a09bcb9 703#define __set_retrans_timer(c) l2cap_set_timer(c, &c->retrans_timer, \
b83ddfe2 704 msecs_to_jiffies(L2CAP_DEFAULT_RETRANS_TO));
1a09bcb9
GP		 705#define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer)
706#define __set_monitor_timer(c) l2cap_set_timer(c, &c->monitor_timer, \
b83ddfe2 707 msecs_to_jiffies(L2CAP_DEFAULT_MONITOR_TO));
1a09bcb9
GP		 708#define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer)
709#define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \
b83ddfe2 710 msecs_to_jiffies(L2CAP_DEFAULT_ACK_TO));
1a09bcb9 711#define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer)
c74e560c 712
836be934
AE		 713static inline int __seq_offset(struct l2cap_chan *chan, __u16 seq1, __u16 seq2)
714{
715 int offset;
716
717 offset = (seq1 - seq2) % (chan->tx_win_max + 1);
718 if (offset < 0)
719 offset += (chan->tx_win_max + 1);
720
721 return offset;
722}
723
724static inline __u16 __next_seq(struct l2cap_chan *chan, __u16 seq)
725{
726 return (seq + 1) % (chan->tx_win_max + 1);
727}
728
42e5c802 729static inline int l2cap_tx_window_full(struct l2cap_chan *ch)
1c2acffb 730{
1c2acffb
GP		 731 int sub;
732
42e5c802 733 sub = (ch->next_tx_seq - ch->expected_ack_seq) % 64;
1c2acffb
GP		 734
735 if (sub < 0)
736 sub += 64;
737
2c03a7a4 738 return sub == ch->remote_tx_win;
1c2acffb
GP		 739}
740
0b209fae
AE		 741static inline __u16 __get_reqseq(struct l2cap_chan *chan, __u32 ctrl)
742{
743 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
744 return (ctrl & L2CAP_EXT_CTRL_REQSEQ) >>
745 L2CAP_EXT_CTRL_REQSEQ_SHIFT;
746 else
747 return (ctrl & L2CAP_CTRL_REQSEQ) >> L2CAP_CTRL_REQSEQ_SHIFT;
748}
749
750static inline __u32 __set_reqseq(struct l2cap_chan *chan, __u32 reqseq)
751{
752 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
753 return (reqseq << L2CAP_EXT_CTRL_REQSEQ_SHIFT) &
754 L2CAP_EXT_CTRL_REQSEQ;
755 else
756 return (reqseq << L2CAP_CTRL_REQSEQ_SHIFT) & L2CAP_CTRL_REQSEQ;
757}
fb45de7d
AE		 758
759static inline __u16 __get_txseq(struct l2cap_chan *chan, __u32 ctrl)
760{
761 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
762 return (ctrl & L2CAP_EXT_CTRL_TXSEQ) >>
763 L2CAP_EXT_CTRL_TXSEQ_SHIFT;
764 else
765 return (ctrl & L2CAP_CTRL_TXSEQ) >> L2CAP_CTRL_TXSEQ_SHIFT;
766}
767
768static inline __u32 __set_txseq(struct l2cap_chan *chan, __u32 txseq)
769{
770 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
771 return (txseq << L2CAP_EXT_CTRL_TXSEQ_SHIFT) &
772 L2CAP_EXT_CTRL_TXSEQ;
773 else
774 return (txseq << L2CAP_CTRL_TXSEQ_SHIFT) & L2CAP_CTRL_TXSEQ;
775}
776
793c2f1c
AE		 777static inline bool __is_sframe(struct l2cap_chan *chan, __u32 ctrl)
778{
779 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
780 return ctrl & L2CAP_EXT_CTRL_FRAME_TYPE;
781 else
782 return ctrl & L2CAP_CTRL_FRAME_TYPE;
783}
784
785static inline __u32 __set_sframe(struct l2cap_chan *chan)
786{
787 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
788 return L2CAP_EXT_CTRL_FRAME_TYPE;
789 else
790 return L2CAP_CTRL_FRAME_TYPE;
791}
792
7e0ef6ee
AE		 793static inline __u8 __get_ctrl_sar(struct l2cap_chan *chan, __u32 ctrl)
794{
795 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
796 return (ctrl & L2CAP_EXT_CTRL_SAR) >> L2CAP_EXT_CTRL_SAR_SHIFT;
797 else
798 return (ctrl & L2CAP_CTRL_SAR) >> L2CAP_CTRL_SAR_SHIFT;
799}
800
801static inline __u32 __set_ctrl_sar(struct l2cap_chan *chan, __u32 sar)
802{
803 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
804 return (sar << L2CAP_EXT_CTRL_SAR_SHIFT) & L2CAP_EXT_CTRL_SAR;
805 else
806 return (sar << L2CAP_CTRL_SAR_SHIFT) & L2CAP_CTRL_SAR;
807}
808
809static inline bool __is_sar_start(struct l2cap_chan *chan, __u32 ctrl)
810{
811 return __get_ctrl_sar(chan, ctrl) == L2CAP_SAR_START;
812}
813
814static inline __u32 __get_sar_mask(struct l2cap_chan *chan)
815{
816 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
817 return L2CAP_EXT_CTRL_SAR;
818 else
819 return L2CAP_CTRL_SAR;
820}
1da177e4 821
ab784b73
AE		 822static inline __u8 __get_ctrl_super(struct l2cap_chan *chan, __u32 ctrl)
823{
824 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
825 return (ctrl & L2CAP_EXT_CTRL_SUPERVISE) >>
826 L2CAP_EXT_CTRL_SUPER_SHIFT;
827 else
828 return (ctrl & L2CAP_CTRL_SUPERVISE) >> L2CAP_CTRL_SUPER_SHIFT;
829}
830
831static inline __u32 __set_ctrl_super(struct l2cap_chan *chan, __u32 super)
832{
833 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
834 return (super << L2CAP_EXT_CTRL_SUPER_SHIFT) &
835 L2CAP_EXT_CTRL_SUPERVISE;
836 else
837 return (super << L2CAP_CTRL_SUPER_SHIFT) &
838 L2CAP_CTRL_SUPERVISE;
839}
840
03f6715d
AE		 841static inline __u32 __set_ctrl_final(struct l2cap_chan *chan)
842{
843 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
844 return L2CAP_EXT_CTRL_FINAL;
845 else
846 return L2CAP_CTRL_FINAL;
847}
848
849static inline bool __is_ctrl_final(struct l2cap_chan *chan, __u32 ctrl)
850{
851 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
852 return ctrl & L2CAP_EXT_CTRL_FINAL;
853 else
854 return ctrl & L2CAP_CTRL_FINAL;
855}
e3781735
AE		 856
857static inline __u32 __set_ctrl_poll(struct l2cap_chan *chan)
858{
859 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
860 return L2CAP_EXT_CTRL_POLL;
861 else
862 return L2CAP_CTRL_POLL;
863}
864
865static inline bool __is_ctrl_poll(struct l2cap_chan *chan, __u32 ctrl)
866{
867 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
868 return ctrl & L2CAP_EXT_CTRL_POLL;
869 else
870 return ctrl & L2CAP_CTRL_POLL;
871}
88843ab0
AE		 872
873static inline __u32 __get_control(struct l2cap_chan *chan, void *p)
874{
875 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
876 return get_unaligned_le32(p);
877 else
878 return get_unaligned_le16(p);
879}
880
881static inline void __put_control(struct l2cap_chan *chan, __u32 control,
882 void *p)
883{
884 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
885 return put_unaligned_le32(control, p);
886 else
887 return put_unaligned_le16(control, p);
888}
889
890static inline __u8 __ctrl_size(struct l2cap_chan *chan)
891{
892 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
893 return L2CAP_EXT_HDR_SIZE - L2CAP_HDR_SIZE;
894 else
895 return L2CAP_ENH_HDR_SIZE - L2CAP_HDR_SIZE;
896}
1da177e4 897
eb939922 898extern bool disable_ertm;
bb58f747
GP		 899
900int l2cap_init_sockets(void);
901void l2cap_cleanup_sockets(void);
902
8c1d787b 903void __l2cap_connect_rsp_defer(struct l2cap_chan *chan);
dcba0dba 904int __l2cap_wait_ack(struct sock *sk);
68983259 905
9e4425ff
GP		 906int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm);
907int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid);
908
eef1d9b6 909struct l2cap_chan *l2cap_chan_create(void);
0f852724 910void l2cap_chan_close(struct l2cap_chan *chan, int reason);
23691d75 911void l2cap_chan_destroy(struct l2cap_chan *chan);
cbe8fed4 912int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
03a00194 913 bdaddr_t *dst);
5e59b791
LAD		 914int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len,
915 u32 priority);
e328140f 916void l2cap_chan_busy(struct l2cap_chan *chan, int busy);
d45fc423 917int l2cap_chan_check_security(struct l2cap_chan *chan);
bb58f747 918
1da177e4 919#endif /* __L2CAP_H */
Linux kernel - Deliverables
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