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.
30 #include <asm/unaligned.h>
33 #define L2CAP_DEFAULT_MTU 672
34 #define L2CAP_DEFAULT_MIN_MTU 48
35 #define L2CAP_DEFAULT_FLUSH_TO 0xFFFF
36 #define L2CAP_EFS_DEFAULT_FLUSH_TO 0xFFFFFFFF
37 #define L2CAP_DEFAULT_TX_WINDOW 63
38 #define L2CAP_DEFAULT_EXT_WINDOW 0x3FFF
39 #define L2CAP_DEFAULT_MAX_TX 3
40 #define L2CAP_DEFAULT_RETRANS_TO 2000 /* 2 seconds */
41 #define L2CAP_DEFAULT_MONITOR_TO 12000 /* 12 seconds */
42 #define L2CAP_DEFAULT_MAX_PDU_SIZE 1492 /* Sized for AMP packet */
43 #define L2CAP_DEFAULT_ACK_TO 200
44 #define L2CAP_DEFAULT_MAX_SDU_SIZE 0xFFFF
45 #define L2CAP_DEFAULT_SDU_ITIME 0xFFFFFFFF
46 #define L2CAP_DEFAULT_ACC_LAT 0xFFFFFFFF
47 #define L2CAP_BREDR_MAX_PAYLOAD 1019 /* 3-DH5 packet */
48 #define L2CAP_LE_MIN_MTU 23
50 #define L2CAP_DISC_TIMEOUT msecs_to_jiffies(100)
51 #define L2CAP_DISC_REJ_TIMEOUT msecs_to_jiffies(5000)
52 #define L2CAP_ENC_TIMEOUT msecs_to_jiffies(5000)
53 #define L2CAP_CONN_TIMEOUT msecs_to_jiffies(40000)
54 #define L2CAP_INFO_TIMEOUT msecs_to_jiffies(4000)
55 #define L2CAP_MOVE_TIMEOUT msecs_to_jiffies(4000)
56 #define L2CAP_MOVE_ERTX_TIMEOUT msecs_to_jiffies(60000)
58 #define L2CAP_A2MP_DEFAULT_MTU 670
60 /* L2CAP socket address */
62 sa_family_t l2_family;
69 /* L2CAP socket options */
70 #define L2CAP_OPTIONS 0x01
71 struct l2cap_options {
81 #define L2CAP_CONNINFO 0x02
82 struct l2cap_conninfo {
88 #define L2CAP_LM_MASTER 0x0001
89 #define L2CAP_LM_AUTH 0x0002
90 #define L2CAP_LM_ENCRYPT 0x0004
91 #define L2CAP_LM_TRUSTED 0x0008
92 #define L2CAP_LM_RELIABLE 0x0010
93 #define L2CAP_LM_SECURE 0x0020
94 #define L2CAP_LM_FIPS 0x0040
96 /* L2CAP command codes */
97 #define L2CAP_COMMAND_REJ 0x01
98 #define L2CAP_CONN_REQ 0x02
99 #define L2CAP_CONN_RSP 0x03
100 #define L2CAP_CONF_REQ 0x04
101 #define L2CAP_CONF_RSP 0x05
102 #define L2CAP_DISCONN_REQ 0x06
103 #define L2CAP_DISCONN_RSP 0x07
104 #define L2CAP_ECHO_REQ 0x08
105 #define L2CAP_ECHO_RSP 0x09
106 #define L2CAP_INFO_REQ 0x0a
107 #define L2CAP_INFO_RSP 0x0b
108 #define L2CAP_CREATE_CHAN_REQ 0x0c
109 #define L2CAP_CREATE_CHAN_RSP 0x0d
110 #define L2CAP_MOVE_CHAN_REQ 0x0e
111 #define L2CAP_MOVE_CHAN_RSP 0x0f
112 #define L2CAP_MOVE_CHAN_CFM 0x10
113 #define L2CAP_MOVE_CHAN_CFM_RSP 0x11
114 #define L2CAP_CONN_PARAM_UPDATE_REQ 0x12
115 #define L2CAP_CONN_PARAM_UPDATE_RSP 0x13
116 #define L2CAP_LE_CONN_REQ 0x14
117 #define L2CAP_LE_CONN_RSP 0x15
118 #define L2CAP_LE_CREDITS 0x16
120 /* L2CAP extended feature mask */
121 #define L2CAP_FEAT_FLOWCTL 0x00000001
122 #define L2CAP_FEAT_RETRANS 0x00000002
123 #define L2CAP_FEAT_BIDIR_QOS 0x00000004
124 #define L2CAP_FEAT_ERTM 0x00000008
125 #define L2CAP_FEAT_STREAMING 0x00000010
126 #define L2CAP_FEAT_FCS 0x00000020
127 #define L2CAP_FEAT_EXT_FLOW 0x00000040
128 #define L2CAP_FEAT_FIXED_CHAN 0x00000080
129 #define L2CAP_FEAT_EXT_WINDOW 0x00000100
130 #define L2CAP_FEAT_UCD 0x00000200
132 /* L2CAP checksum option */
133 #define L2CAP_FCS_NONE 0x00
134 #define L2CAP_FCS_CRC16 0x01
136 /* L2CAP fixed channels */
137 #define L2CAP_FC_L2CAP 0x02
138 #define L2CAP_FC_CONNLESS 0x04
139 #define L2CAP_FC_A2MP 0x08
140 #define L2CAP_FC_6LOWPAN 0x3e /* reserved and temporary value */
142 /* L2CAP Control Field bit masks */
143 #define L2CAP_CTRL_SAR 0xC000
144 #define L2CAP_CTRL_REQSEQ 0x3F00
145 #define L2CAP_CTRL_TXSEQ 0x007E
146 #define L2CAP_CTRL_SUPERVISE 0x000C
148 #define L2CAP_CTRL_RETRANS 0x0080
149 #define L2CAP_CTRL_FINAL 0x0080
150 #define L2CAP_CTRL_POLL 0x0010
151 #define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */
153 #define L2CAP_CTRL_TXSEQ_SHIFT 1
154 #define L2CAP_CTRL_SUPER_SHIFT 2
155 #define L2CAP_CTRL_POLL_SHIFT 4
156 #define L2CAP_CTRL_FINAL_SHIFT 7
157 #define L2CAP_CTRL_REQSEQ_SHIFT 8
158 #define L2CAP_CTRL_SAR_SHIFT 14
160 /* L2CAP Extended Control Field bit mask */
161 #define L2CAP_EXT_CTRL_TXSEQ 0xFFFC0000
162 #define L2CAP_EXT_CTRL_SAR 0x00030000
163 #define L2CAP_EXT_CTRL_SUPERVISE 0x00030000
164 #define L2CAP_EXT_CTRL_REQSEQ 0x0000FFFC
166 #define L2CAP_EXT_CTRL_POLL 0x00040000
167 #define L2CAP_EXT_CTRL_FINAL 0x00000002
168 #define L2CAP_EXT_CTRL_FRAME_TYPE 0x00000001 /* I- or S-Frame */
170 #define L2CAP_EXT_CTRL_FINAL_SHIFT 1
171 #define L2CAP_EXT_CTRL_REQSEQ_SHIFT 2
172 #define L2CAP_EXT_CTRL_SAR_SHIFT 16
173 #define L2CAP_EXT_CTRL_SUPER_SHIFT 16
174 #define L2CAP_EXT_CTRL_POLL_SHIFT 18
175 #define L2CAP_EXT_CTRL_TXSEQ_SHIFT 18
177 /* L2CAP Supervisory Function */
178 #define L2CAP_SUPER_RR 0x00
179 #define L2CAP_SUPER_REJ 0x01
180 #define L2CAP_SUPER_RNR 0x02
181 #define L2CAP_SUPER_SREJ 0x03
183 /* L2CAP Segmentation and Reassembly */
184 #define L2CAP_SAR_UNSEGMENTED 0x00
185 #define L2CAP_SAR_START 0x01
186 #define L2CAP_SAR_END 0x02
187 #define L2CAP_SAR_CONTINUE 0x03
189 /* L2CAP Command rej. reasons */
190 #define L2CAP_REJ_NOT_UNDERSTOOD 0x0000
191 #define L2CAP_REJ_MTU_EXCEEDED 0x0001
192 #define L2CAP_REJ_INVALID_CID 0x0002
194 /* L2CAP structures */
199 #define L2CAP_HDR_SIZE 4
200 #define L2CAP_ENH_HDR_SIZE 6
201 #define L2CAP_EXT_HDR_SIZE 8
203 #define L2CAP_FCS_SIZE 2
204 #define L2CAP_SDULEN_SIZE 2
205 #define L2CAP_PSMLEN_SIZE 2
206 #define L2CAP_ENH_CTRL_SIZE 2
207 #define L2CAP_EXT_CTRL_SIZE 4
209 struct l2cap_cmd_hdr {
214 #define L2CAP_CMD_HDR_SIZE 4
216 struct l2cap_cmd_rej_unk {
220 struct l2cap_cmd_rej_mtu {
225 struct l2cap_cmd_rej_cid {
231 struct l2cap_conn_req {
236 struct l2cap_conn_rsp {
243 /* protocol/service multiplexer (PSM) */
244 #define L2CAP_PSM_SDP 0x0001
245 #define L2CAP_PSM_RFCOMM 0x0003
246 #define L2CAP_PSM_3DSP 0x0021
248 /* channel identifier */
249 #define L2CAP_CID_SIGNALING 0x0001
250 #define L2CAP_CID_CONN_LESS 0x0002
251 #define L2CAP_CID_A2MP 0x0003
252 #define L2CAP_CID_ATT 0x0004
253 #define L2CAP_CID_LE_SIGNALING 0x0005
254 #define L2CAP_CID_SMP 0x0006
255 #define L2CAP_CID_DYN_START 0x0040
256 #define L2CAP_CID_DYN_END 0xffff
257 #define L2CAP_CID_LE_DYN_END 0x007f
259 /* connect/create channel results */
260 #define L2CAP_CR_SUCCESS 0x0000
261 #define L2CAP_CR_PEND 0x0001
262 #define L2CAP_CR_BAD_PSM 0x0002
263 #define L2CAP_CR_SEC_BLOCK 0x0003
264 #define L2CAP_CR_NO_MEM 0x0004
265 #define L2CAP_CR_BAD_AMP 0x0005
266 #define L2CAP_CR_AUTHENTICATION 0x0005
267 #define L2CAP_CR_AUTHORIZATION 0x0006
268 #define L2CAP_CR_BAD_KEY_SIZE 0x0007
269 #define L2CAP_CR_ENCRYPTION 0x0008
271 /* connect/create channel status */
272 #define L2CAP_CS_NO_INFO 0x0000
273 #define L2CAP_CS_AUTHEN_PEND 0x0001
274 #define L2CAP_CS_AUTHOR_PEND 0x0002
276 struct l2cap_conf_req {
282 struct l2cap_conf_rsp {
289 #define L2CAP_CONF_SUCCESS 0x0000
290 #define L2CAP_CONF_UNACCEPT 0x0001
291 #define L2CAP_CONF_REJECT 0x0002
292 #define L2CAP_CONF_UNKNOWN 0x0003
293 #define L2CAP_CONF_PENDING 0x0004
294 #define L2CAP_CONF_EFS_REJECT 0x0005
296 /* configuration req/rsp continuation flag */
297 #define L2CAP_CONF_FLAG_CONTINUATION 0x0001
299 struct l2cap_conf_opt {
304 #define L2CAP_CONF_OPT_SIZE 2
306 #define L2CAP_CONF_HINT 0x80
307 #define L2CAP_CONF_MASK 0x7f
309 #define L2CAP_CONF_MTU 0x01
310 #define L2CAP_CONF_FLUSH_TO 0x02
311 #define L2CAP_CONF_QOS 0x03
312 #define L2CAP_CONF_RFC 0x04
313 #define L2CAP_CONF_FCS 0x05
314 #define L2CAP_CONF_EFS 0x06
315 #define L2CAP_CONF_EWS 0x07
317 #define L2CAP_CONF_MAX_SIZE 22
319 struct l2cap_conf_rfc {
323 __le16 retrans_timeout;
324 __le16 monitor_timeout;
328 #define L2CAP_MODE_BASIC 0x00
329 #define L2CAP_MODE_RETRANS 0x01
330 #define L2CAP_MODE_FLOWCTL 0x02
331 #define L2CAP_MODE_ERTM 0x03
332 #define L2CAP_MODE_STREAMING 0x04
334 /* Unlike the above this one doesn't actually map to anything that would
335 * ever be sent over the air. Therefore, use a value that's unlikely to
336 * ever be used in the BR/EDR configuration phase.
338 #define L2CAP_MODE_LE_FLOWCTL 0x80
340 struct l2cap_conf_efs {
349 #define L2CAP_SERV_NOTRAFIC 0x00
350 #define L2CAP_SERV_BESTEFFORT 0x01
351 #define L2CAP_SERV_GUARANTEED 0x02
353 #define L2CAP_BESTEFFORT_ID 0x01
355 struct l2cap_disconn_req {
360 struct l2cap_disconn_rsp {
365 struct l2cap_info_req {
369 struct l2cap_info_rsp {
375 struct l2cap_create_chan_req {
381 struct l2cap_create_chan_rsp {
388 struct l2cap_move_chan_req {
393 struct l2cap_move_chan_rsp {
398 #define L2CAP_MR_SUCCESS 0x0000
399 #define L2CAP_MR_PEND 0x0001
400 #define L2CAP_MR_BAD_ID 0x0002
401 #define L2CAP_MR_SAME_ID 0x0003
402 #define L2CAP_MR_NOT_SUPP 0x0004
403 #define L2CAP_MR_COLLISION 0x0005
404 #define L2CAP_MR_NOT_ALLOWED 0x0006
406 struct l2cap_move_chan_cfm {
411 #define L2CAP_MC_CONFIRMED 0x0000
412 #define L2CAP_MC_UNCONFIRMED 0x0001
414 struct l2cap_move_chan_cfm_rsp {
419 #define L2CAP_IT_CL_MTU 0x0001
420 #define L2CAP_IT_FEAT_MASK 0x0002
421 #define L2CAP_IT_FIXED_CHAN 0x0003
424 #define L2CAP_IR_SUCCESS 0x0000
425 #define L2CAP_IR_NOTSUPP 0x0001
427 struct l2cap_conn_param_update_req {
431 __le16 to_multiplier;
434 struct l2cap_conn_param_update_rsp {
438 /* Connection Parameters result */
439 #define L2CAP_CONN_PARAM_ACCEPTED 0x0000
440 #define L2CAP_CONN_PARAM_REJECTED 0x0001
442 #define L2CAP_LE_MAX_CREDITS 10
443 #define L2CAP_LE_DEFAULT_MPS 230
445 struct l2cap_le_conn_req {
453 struct l2cap_le_conn_rsp {
461 struct l2cap_le_credits {
466 /* ----- L2CAP channels and connections ----- */
467 struct l2cap_seq_list {
474 #define L2CAP_SEQ_LIST_CLEAR 0xFFFF
475 #define L2CAP_SEQ_LIST_TAIL 0x8000
478 struct l2cap_conn *conn;
479 struct hci_conn *hs_hcon;
480 struct hci_chan *hs_hchan;
516 __u16 retrans_timeout;
517 __u16 monitor_timeout;
526 unsigned long conf_state;
527 unsigned long conn_state;
537 __u16 expected_ack_seq;
538 __u16 expected_tx_seq;
540 __u16 srej_save_reqseq;
541 __u16 last_acked_seq;
543 __u16 unacked_frames;
547 struct sk_buff *sdu_last_frag;
556 __u32 local_sdu_itime;
558 __u32 local_flush_to;
563 __u32 remote_sdu_itime;
564 __u32 remote_acc_lat;
565 __u32 remote_flush_to;
567 struct delayed_work chan_timer;
568 struct delayed_work retrans_timer;
569 struct delayed_work monitor_timer;
570 struct delayed_work ack_timer;
572 struct sk_buff *tx_send_head;
573 struct sk_buff_head tx_q;
574 struct sk_buff_head srej_q;
575 struct l2cap_seq_list srej_list;
576 struct l2cap_seq_list retrans_list;
578 struct list_head list;
579 struct list_head global_l;
582 struct l2cap_ops *ops;
589 struct l2cap_chan *(*new_connection) (struct l2cap_chan *chan);
590 int (*recv) (struct l2cap_chan * chan,
591 struct sk_buff *skb);
592 void (*teardown) (struct l2cap_chan *chan, int err);
593 void (*close) (struct l2cap_chan *chan);
594 void (*state_change) (struct l2cap_chan *chan,
596 void (*ready) (struct l2cap_chan *chan);
597 void (*defer) (struct l2cap_chan *chan);
598 void (*resume) (struct l2cap_chan *chan);
599 void (*suspend) (struct l2cap_chan *chan);
600 void (*set_shutdown) (struct l2cap_chan *chan);
601 long (*get_sndtimeo) (struct l2cap_chan *chan);
602 struct sk_buff *(*alloc_skb) (struct l2cap_chan *chan,
603 unsigned long len, int nb);
607 struct hci_conn *hcon;
608 struct hci_chan *hchan;
613 __u8 fixed_chan_mask;
619 struct delayed_work info_timer;
623 struct sk_buff *rx_skb;
627 struct sk_buff_head pending_rx;
628 struct work_struct pending_rx_work;
632 struct delayed_work security_timer;
633 struct smp_chan *smp_chan;
635 struct list_head chan_l;
636 struct mutex chan_lock;
638 struct list_head users;
642 struct list_head list;
643 int (*probe) (struct l2cap_conn *conn, struct l2cap_user *user);
644 void (*remove) (struct l2cap_conn *conn, struct l2cap_user *user);
647 #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01
648 #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04
649 #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08
651 #define L2CAP_CHAN_RAW 1
652 #define L2CAP_CHAN_CONN_LESS 2
653 #define L2CAP_CHAN_CONN_ORIENTED 3
654 #define L2CAP_CHAN_FIXED 4
656 /* ----- L2CAP socket info ----- */
657 #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
661 struct l2cap_chan *chan;
662 struct sk_buff *rx_busy_skb;
680 #define L2CAP_CONF_MAX_CONF_REQ 2
681 #define L2CAP_CONF_MAX_CONF_RSP 2
695 /* Definitions for flags in l2cap_chan */
704 FLAG_LE_CONN_REQ_SENT,
709 L2CAP_TX_STATE_WAIT_F,
714 L2CAP_RX_STATE_SREJ_SENT,
716 L2CAP_RX_STATE_WAIT_P,
717 L2CAP_RX_STATE_WAIT_F,
721 L2CAP_TXSEQ_EXPECTED,
722 L2CAP_TXSEQ_EXPECTED_SREJ,
723 L2CAP_TXSEQ_UNEXPECTED,
724 L2CAP_TXSEQ_UNEXPECTED_SREJ,
725 L2CAP_TXSEQ_DUPLICATE,
726 L2CAP_TXSEQ_DUPLICATE_SREJ,
728 L2CAP_TXSEQ_INVALID_IGNORE,
732 L2CAP_EV_DATA_REQUEST,
733 L2CAP_EV_LOCAL_BUSY_DETECTED,
734 L2CAP_EV_LOCAL_BUSY_CLEAR,
735 L2CAP_EV_RECV_REQSEQ_AND_FBIT,
739 L2CAP_EV_EXPLICIT_POLL,
740 L2CAP_EV_RECV_IFRAME,
749 L2CAP_MOVE_ROLE_NONE,
750 L2CAP_MOVE_ROLE_INITIATOR,
751 L2CAP_MOVE_ROLE_RESPONDER,
758 L2CAP_MOVE_WAIT_RSP_SUCCESS,
759 L2CAP_MOVE_WAIT_CONFIRM,
760 L2CAP_MOVE_WAIT_CONFIRM_RSP,
761 L2CAP_MOVE_WAIT_LOGICAL_COMP,
762 L2CAP_MOVE_WAIT_LOGICAL_CFM,
763 L2CAP_MOVE_WAIT_LOCAL_BUSY,
764 L2CAP_MOVE_WAIT_PREPARE,
767 void l2cap_chan_hold(struct l2cap_chan *c);
768 void l2cap_chan_put(struct l2cap_chan *c);
770 static inline void l2cap_chan_lock(struct l2cap_chan *chan)
772 mutex_lock(&chan->lock);
775 static inline void l2cap_chan_unlock(struct l2cap_chan *chan)
777 mutex_unlock(&chan->lock);
780 static inline void l2cap_set_timer(struct l2cap_chan *chan,
781 struct delayed_work *work, long timeout)
783 BT_DBG("chan %p state %s timeout %ld", chan,
784 state_to_string(chan->state), timeout);
786 /* If delayed work cancelled do not hold(chan)
787 since it is already done with previous set_timer */
788 if (!cancel_delayed_work(work))
789 l2cap_chan_hold(chan);
791 schedule_delayed_work(work, timeout);
794 static inline bool l2cap_clear_timer(struct l2cap_chan *chan,
795 struct delayed_work *work)
799 /* put(chan) if delayed work cancelled otherwise it
800 is done in delayed work function */
801 ret = cancel_delayed_work(work);
803 l2cap_chan_put(chan);
808 #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t))
809 #define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer)
810 #define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer)
811 #define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer)
812 #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \
813 msecs_to_jiffies(L2CAP_DEFAULT_ACK_TO));
814 #define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer)
816 static inline int __seq_offset(struct l2cap_chan *chan, __u16 seq1, __u16 seq2)
821 return chan->tx_win_max + 1 - seq2 + seq1;
824 static inline __u16 __next_seq(struct l2cap_chan *chan, __u16 seq)
826 return (seq + 1) % (chan->tx_win_max + 1);
829 static inline struct l2cap_chan *l2cap_chan_no_new_connection(struct l2cap_chan *chan)
834 static inline void l2cap_chan_no_teardown(struct l2cap_chan *chan, int err)
838 static inline void l2cap_chan_no_ready(struct l2cap_chan *chan)
842 static inline void l2cap_chan_no_defer(struct l2cap_chan *chan)
846 static inline void l2cap_chan_no_resume(struct l2cap_chan *chan)
850 static inline void l2cap_chan_no_set_shutdown(struct l2cap_chan *chan)
854 static inline long l2cap_chan_no_get_sndtimeo(struct l2cap_chan *chan)
859 extern bool disable_ertm;
861 int l2cap_init_sockets(void);
862 void l2cap_cleanup_sockets(void);
863 bool l2cap_is_socket(struct socket *sock);
865 void __l2cap_le_connect_rsp_defer(struct l2cap_chan *chan);
866 void __l2cap_connect_rsp_defer(struct l2cap_chan *chan);
868 int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm);
869 int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid);
871 struct l2cap_chan *l2cap_chan_create(void);
872 void l2cap_chan_close(struct l2cap_chan *chan, int reason);
873 int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
874 bdaddr_t *dst, u8 dst_type);
875 int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len,
877 void l2cap_chan_busy(struct l2cap_chan *chan, int busy);
878 int l2cap_chan_check_security(struct l2cap_chan *chan);
879 void l2cap_chan_set_defaults(struct l2cap_chan *chan);
880 int l2cap_ertm_init(struct l2cap_chan *chan);
881 void l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan);
882 void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan);
883 void l2cap_chan_del(struct l2cap_chan *chan, int err);
884 void l2cap_conn_update_id_addr(struct hci_conn *hcon);
885 void l2cap_send_conn_req(struct l2cap_chan *chan);
886 void l2cap_move_start(struct l2cap_chan *chan);
887 void l2cap_logical_cfm(struct l2cap_chan *chan, struct hci_chan *hchan,
889 void __l2cap_physical_cfm(struct l2cap_chan *chan, int result);
891 void l2cap_conn_get(struct l2cap_conn *conn);
892 void l2cap_conn_put(struct l2cap_conn *conn);
894 int l2cap_register_user(struct l2cap_conn *conn, struct l2cap_user *user);
895 void l2cap_unregister_user(struct l2cap_conn *conn, struct l2cap_user *user);
897 #endif /* __L2CAP_H */