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
95 /* L2CAP command codes */
96 #define L2CAP_COMMAND_REJ 0x01
97 #define L2CAP_CONN_REQ 0x02
98 #define L2CAP_CONN_RSP 0x03
99 #define L2CAP_CONF_REQ 0x04
100 #define L2CAP_CONF_RSP 0x05
101 #define L2CAP_DISCONN_REQ 0x06
102 #define L2CAP_DISCONN_RSP 0x07
103 #define L2CAP_ECHO_REQ 0x08
104 #define L2CAP_ECHO_RSP 0x09
105 #define L2CAP_INFO_REQ 0x0a
106 #define L2CAP_INFO_RSP 0x0b
107 #define L2CAP_CREATE_CHAN_REQ 0x0c
108 #define L2CAP_CREATE_CHAN_RSP 0x0d
109 #define L2CAP_MOVE_CHAN_REQ 0x0e
110 #define L2CAP_MOVE_CHAN_RSP 0x0f
111 #define L2CAP_MOVE_CHAN_CFM 0x10
112 #define L2CAP_MOVE_CHAN_CFM_RSP 0x11
113 #define L2CAP_CONN_PARAM_UPDATE_REQ 0x12
114 #define L2CAP_CONN_PARAM_UPDATE_RSP 0x13
115 #define L2CAP_LE_CONN_REQ 0x14
116 #define L2CAP_LE_CONN_RSP 0x15
117 #define L2CAP_LE_CREDITS 0x16
119 /* L2CAP extended feature mask */
120 #define L2CAP_FEAT_FLOWCTL 0x00000001
121 #define L2CAP_FEAT_RETRANS 0x00000002
122 #define L2CAP_FEAT_BIDIR_QOS 0x00000004
123 #define L2CAP_FEAT_ERTM 0x00000008
124 #define L2CAP_FEAT_STREAMING 0x00000010
125 #define L2CAP_FEAT_FCS 0x00000020
126 #define L2CAP_FEAT_EXT_FLOW 0x00000040
127 #define L2CAP_FEAT_FIXED_CHAN 0x00000080
128 #define L2CAP_FEAT_EXT_WINDOW 0x00000100
129 #define L2CAP_FEAT_UCD 0x00000200
131 /* L2CAP checksum option */
132 #define L2CAP_FCS_NONE 0x00
133 #define L2CAP_FCS_CRC16 0x01
135 /* L2CAP fixed channels */
136 #define L2CAP_FC_L2CAP 0x02
137 #define L2CAP_FC_CONNLESS 0x04
138 #define L2CAP_FC_A2MP 0x08
140 /* L2CAP Control Field bit masks */
141 #define L2CAP_CTRL_SAR 0xC000
142 #define L2CAP_CTRL_REQSEQ 0x3F00
143 #define L2CAP_CTRL_TXSEQ 0x007E
144 #define L2CAP_CTRL_SUPERVISE 0x000C
146 #define L2CAP_CTRL_RETRANS 0x0080
147 #define L2CAP_CTRL_FINAL 0x0080
148 #define L2CAP_CTRL_POLL 0x0010
149 #define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */
151 #define L2CAP_CTRL_TXSEQ_SHIFT 1
152 #define L2CAP_CTRL_SUPER_SHIFT 2
153 #define L2CAP_CTRL_POLL_SHIFT 4
154 #define L2CAP_CTRL_FINAL_SHIFT 7
155 #define L2CAP_CTRL_REQSEQ_SHIFT 8
156 #define L2CAP_CTRL_SAR_SHIFT 14
158 /* L2CAP Extended Control Field bit mask */
159 #define L2CAP_EXT_CTRL_TXSEQ 0xFFFC0000
160 #define L2CAP_EXT_CTRL_SAR 0x00030000
161 #define L2CAP_EXT_CTRL_SUPERVISE 0x00030000
162 #define L2CAP_EXT_CTRL_REQSEQ 0x0000FFFC
164 #define L2CAP_EXT_CTRL_POLL 0x00040000
165 #define L2CAP_EXT_CTRL_FINAL 0x00000002
166 #define L2CAP_EXT_CTRL_FRAME_TYPE 0x00000001 /* I- or S-Frame */
168 #define L2CAP_EXT_CTRL_FINAL_SHIFT 1
169 #define L2CAP_EXT_CTRL_REQSEQ_SHIFT 2
170 #define L2CAP_EXT_CTRL_SAR_SHIFT 16
171 #define L2CAP_EXT_CTRL_SUPER_SHIFT 16
172 #define L2CAP_EXT_CTRL_POLL_SHIFT 18
173 #define L2CAP_EXT_CTRL_TXSEQ_SHIFT 18
175 /* L2CAP Supervisory Function */
176 #define L2CAP_SUPER_RR 0x00
177 #define L2CAP_SUPER_REJ 0x01
178 #define L2CAP_SUPER_RNR 0x02
179 #define L2CAP_SUPER_SREJ 0x03
181 /* L2CAP Segmentation and Reassembly */
182 #define L2CAP_SAR_UNSEGMENTED 0x00
183 #define L2CAP_SAR_START 0x01
184 #define L2CAP_SAR_END 0x02
185 #define L2CAP_SAR_CONTINUE 0x03
187 /* L2CAP Command rej. reasons */
188 #define L2CAP_REJ_NOT_UNDERSTOOD 0x0000
189 #define L2CAP_REJ_MTU_EXCEEDED 0x0001
190 #define L2CAP_REJ_INVALID_CID 0x0002
192 /* L2CAP structures */
197 #define L2CAP_HDR_SIZE 4
198 #define L2CAP_ENH_HDR_SIZE 6
199 #define L2CAP_EXT_HDR_SIZE 8
201 #define L2CAP_FCS_SIZE 2
202 #define L2CAP_SDULEN_SIZE 2
203 #define L2CAP_PSMLEN_SIZE 2
204 #define L2CAP_ENH_CTRL_SIZE 2
205 #define L2CAP_EXT_CTRL_SIZE 4
207 struct l2cap_cmd_hdr {
212 #define L2CAP_CMD_HDR_SIZE 4
214 struct l2cap_cmd_rej_unk {
218 struct l2cap_cmd_rej_mtu {
223 struct l2cap_cmd_rej_cid {
229 struct l2cap_conn_req {
234 struct l2cap_conn_rsp {
241 /* protocol/service multiplexer (PSM) */
242 #define L2CAP_PSM_SDP 0x0001
243 #define L2CAP_PSM_RFCOMM 0x0003
244 #define L2CAP_PSM_3DSP 0x0021
246 /* channel identifier */
247 #define L2CAP_CID_SIGNALING 0x0001
248 #define L2CAP_CID_CONN_LESS 0x0002
249 #define L2CAP_CID_A2MP 0x0003
250 #define L2CAP_CID_ATT 0x0004
251 #define L2CAP_CID_LE_SIGNALING 0x0005
252 #define L2CAP_CID_SMP 0x0006
253 #define L2CAP_CID_DYN_START 0x0040
254 #define L2CAP_CID_DYN_END 0xffff
255 #define L2CAP_CID_LE_DYN_END 0x007f
257 /* connect/create channel results */
258 #define L2CAP_CR_SUCCESS 0x0000
259 #define L2CAP_CR_PEND 0x0001
260 #define L2CAP_CR_BAD_PSM 0x0002
261 #define L2CAP_CR_SEC_BLOCK 0x0003
262 #define L2CAP_CR_NO_MEM 0x0004
263 #define L2CAP_CR_BAD_AMP 0x0005
264 #define L2CAP_CR_AUTHENTICATION 0x0005
265 #define L2CAP_CR_AUTHORIZATION 0x0006
266 #define L2CAP_CR_BAD_KEY_SIZE 0x0007
267 #define L2CAP_CR_ENCRYPTION 0x0008
269 /* connect/create channel status */
270 #define L2CAP_CS_NO_INFO 0x0000
271 #define L2CAP_CS_AUTHEN_PEND 0x0001
272 #define L2CAP_CS_AUTHOR_PEND 0x0002
274 struct l2cap_conf_req {
280 struct l2cap_conf_rsp {
287 #define L2CAP_CONF_SUCCESS 0x0000
288 #define L2CAP_CONF_UNACCEPT 0x0001
289 #define L2CAP_CONF_REJECT 0x0002
290 #define L2CAP_CONF_UNKNOWN 0x0003
291 #define L2CAP_CONF_PENDING 0x0004
292 #define L2CAP_CONF_EFS_REJECT 0x0005
294 /* configuration req/rsp continuation flag */
295 #define L2CAP_CONF_FLAG_CONTINUATION 0x0001
297 struct l2cap_conf_opt {
302 #define L2CAP_CONF_OPT_SIZE 2
304 #define L2CAP_CONF_HINT 0x80
305 #define L2CAP_CONF_MASK 0x7f
307 #define L2CAP_CONF_MTU 0x01
308 #define L2CAP_CONF_FLUSH_TO 0x02
309 #define L2CAP_CONF_QOS 0x03
310 #define L2CAP_CONF_RFC 0x04
311 #define L2CAP_CONF_FCS 0x05
312 #define L2CAP_CONF_EFS 0x06
313 #define L2CAP_CONF_EWS 0x07
315 #define L2CAP_CONF_MAX_SIZE 22
317 struct l2cap_conf_rfc {
321 __le16 retrans_timeout;
322 __le16 monitor_timeout;
326 #define L2CAP_MODE_BASIC 0x00
327 #define L2CAP_MODE_RETRANS 0x01
328 #define L2CAP_MODE_FLOWCTL 0x02
329 #define L2CAP_MODE_ERTM 0x03
330 #define L2CAP_MODE_STREAMING 0x04
332 /* Unlike the above this one doesn't actually map to anything that would
333 * ever be sent over the air. Therefore, use a value that's unlikely to
334 * ever be used in the BR/EDR configuration phase.
336 #define L2CAP_MODE_LE_FLOWCTL 0x80
338 struct l2cap_conf_efs {
347 #define L2CAP_SERV_NOTRAFIC 0x00
348 #define L2CAP_SERV_BESTEFFORT 0x01
349 #define L2CAP_SERV_GUARANTEED 0x02
351 #define L2CAP_BESTEFFORT_ID 0x01
353 struct l2cap_disconn_req {
358 struct l2cap_disconn_rsp {
363 struct l2cap_info_req {
367 struct l2cap_info_rsp {
373 struct l2cap_create_chan_req {
379 struct l2cap_create_chan_rsp {
386 struct l2cap_move_chan_req {
391 struct l2cap_move_chan_rsp {
396 #define L2CAP_MR_SUCCESS 0x0000
397 #define L2CAP_MR_PEND 0x0001
398 #define L2CAP_MR_BAD_ID 0x0002
399 #define L2CAP_MR_SAME_ID 0x0003
400 #define L2CAP_MR_NOT_SUPP 0x0004
401 #define L2CAP_MR_COLLISION 0x0005
402 #define L2CAP_MR_NOT_ALLOWED 0x0006
404 struct l2cap_move_chan_cfm {
409 #define L2CAP_MC_CONFIRMED 0x0000
410 #define L2CAP_MC_UNCONFIRMED 0x0001
412 struct l2cap_move_chan_cfm_rsp {
417 #define L2CAP_IT_CL_MTU 0x0001
418 #define L2CAP_IT_FEAT_MASK 0x0002
419 #define L2CAP_IT_FIXED_CHAN 0x0003
422 #define L2CAP_IR_SUCCESS 0x0000
423 #define L2CAP_IR_NOTSUPP 0x0001
425 struct l2cap_conn_param_update_req {
429 __le16 to_multiplier;
432 struct l2cap_conn_param_update_rsp {
436 /* Connection Parameters result */
437 #define L2CAP_CONN_PARAM_ACCEPTED 0x0000
438 #define L2CAP_CONN_PARAM_REJECTED 0x0001
440 #define L2CAP_LE_MAX_CREDITS 10
441 #define L2CAP_LE_DEFAULT_MPS 230
443 struct l2cap_le_conn_req {
451 struct l2cap_le_conn_rsp {
459 struct l2cap_le_credits {
464 /* ----- L2CAP channels and connections ----- */
465 struct l2cap_seq_list {
472 #define L2CAP_SEQ_LIST_CLEAR 0xFFFF
473 #define L2CAP_SEQ_LIST_TAIL 0x8000
476 struct l2cap_conn *conn;
477 struct hci_conn *hs_hcon;
478 struct hci_chan *hs_hchan;
514 __u16 retrans_timeout;
515 __u16 monitor_timeout;
524 unsigned long conf_state;
525 unsigned long conn_state;
535 __u16 expected_ack_seq;
536 __u16 expected_tx_seq;
538 __u16 srej_save_reqseq;
539 __u16 last_acked_seq;
541 __u16 unacked_frames;
545 struct sk_buff *sdu_last_frag;
554 __u32 local_sdu_itime;
556 __u32 local_flush_to;
561 __u32 remote_sdu_itime;
562 __u32 remote_acc_lat;
563 __u32 remote_flush_to;
565 struct delayed_work chan_timer;
566 struct delayed_work retrans_timer;
567 struct delayed_work monitor_timer;
568 struct delayed_work ack_timer;
570 struct sk_buff *tx_send_head;
571 struct sk_buff_head tx_q;
572 struct sk_buff_head srej_q;
573 struct l2cap_seq_list srej_list;
574 struct l2cap_seq_list retrans_list;
576 struct list_head list;
577 struct list_head global_l;
580 struct l2cap_ops *ops;
587 struct l2cap_chan *(*new_connection) (struct l2cap_chan *chan);
588 int (*recv) (struct l2cap_chan * chan,
589 struct sk_buff *skb);
590 void (*teardown) (struct l2cap_chan *chan, int err);
591 void (*close) (struct l2cap_chan *chan);
592 void (*state_change) (struct l2cap_chan *chan,
594 void (*ready) (struct l2cap_chan *chan);
595 void (*defer) (struct l2cap_chan *chan);
596 void (*resume) (struct l2cap_chan *chan);
597 void (*suspend) (struct l2cap_chan *chan);
598 void (*set_shutdown) (struct l2cap_chan *chan);
599 long (*get_sndtimeo) (struct l2cap_chan *chan);
600 struct sk_buff *(*alloc_skb) (struct l2cap_chan *chan,
601 unsigned long len, int nb);
605 struct hci_conn *hcon;
606 struct hci_chan *hchan;
611 __u8 fixed_chan_mask;
617 struct delayed_work info_timer;
621 struct sk_buff *rx_skb;
627 struct delayed_work security_timer;
628 struct smp_chan *smp_chan;
630 struct list_head chan_l;
631 struct mutex chan_lock;
633 struct list_head users;
637 struct list_head list;
638 int (*probe) (struct l2cap_conn *conn, struct l2cap_user *user);
639 void (*remove) (struct l2cap_conn *conn, struct l2cap_user *user);
642 #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01
643 #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04
644 #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08
646 #define L2CAP_CHAN_RAW 1
647 #define L2CAP_CHAN_CONN_LESS 2
648 #define L2CAP_CHAN_CONN_ORIENTED 3
649 #define L2CAP_CHAN_CONN_FIX_A2MP 4
651 /* ----- L2CAP socket info ----- */
652 #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
656 struct l2cap_chan *chan;
657 struct sk_buff *rx_busy_skb;
675 #define L2CAP_CONF_MAX_CONF_REQ 2
676 #define L2CAP_CONF_MAX_CONF_RSP 2
690 /* Definitions for flags in l2cap_chan */
699 FLAG_LE_CONN_REQ_SENT,
704 L2CAP_TX_STATE_WAIT_F,
709 L2CAP_RX_STATE_SREJ_SENT,
711 L2CAP_RX_STATE_WAIT_P,
712 L2CAP_RX_STATE_WAIT_F,
716 L2CAP_TXSEQ_EXPECTED,
717 L2CAP_TXSEQ_EXPECTED_SREJ,
718 L2CAP_TXSEQ_UNEXPECTED,
719 L2CAP_TXSEQ_UNEXPECTED_SREJ,
720 L2CAP_TXSEQ_DUPLICATE,
721 L2CAP_TXSEQ_DUPLICATE_SREJ,
723 L2CAP_TXSEQ_INVALID_IGNORE,
727 L2CAP_EV_DATA_REQUEST,
728 L2CAP_EV_LOCAL_BUSY_DETECTED,
729 L2CAP_EV_LOCAL_BUSY_CLEAR,
730 L2CAP_EV_RECV_REQSEQ_AND_FBIT,
734 L2CAP_EV_EXPLICIT_POLL,
735 L2CAP_EV_RECV_IFRAME,
744 L2CAP_MOVE_ROLE_NONE,
745 L2CAP_MOVE_ROLE_INITIATOR,
746 L2CAP_MOVE_ROLE_RESPONDER,
753 L2CAP_MOVE_WAIT_RSP_SUCCESS,
754 L2CAP_MOVE_WAIT_CONFIRM,
755 L2CAP_MOVE_WAIT_CONFIRM_RSP,
756 L2CAP_MOVE_WAIT_LOGICAL_COMP,
757 L2CAP_MOVE_WAIT_LOGICAL_CFM,
758 L2CAP_MOVE_WAIT_LOCAL_BUSY,
759 L2CAP_MOVE_WAIT_PREPARE,
762 void l2cap_chan_hold(struct l2cap_chan *c);
763 void l2cap_chan_put(struct l2cap_chan *c);
765 static inline void l2cap_chan_lock(struct l2cap_chan *chan)
767 mutex_lock(&chan->lock);
770 static inline void l2cap_chan_unlock(struct l2cap_chan *chan)
772 mutex_unlock(&chan->lock);
775 static inline void l2cap_set_timer(struct l2cap_chan *chan,
776 struct delayed_work *work, long timeout)
778 BT_DBG("chan %p state %s timeout %ld", chan,
779 state_to_string(chan->state), timeout);
781 /* If delayed work cancelled do not hold(chan)
782 since it is already done with previous set_timer */
783 if (!cancel_delayed_work(work))
784 l2cap_chan_hold(chan);
786 schedule_delayed_work(work, timeout);
789 static inline bool l2cap_clear_timer(struct l2cap_chan *chan,
790 struct delayed_work *work)
794 /* put(chan) if delayed work cancelled otherwise it
795 is done in delayed work function */
796 ret = cancel_delayed_work(work);
798 l2cap_chan_put(chan);
803 #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t))
804 #define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer)
805 #define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer)
806 #define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer)
807 #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \
808 msecs_to_jiffies(L2CAP_DEFAULT_ACK_TO));
809 #define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer)
811 static inline int __seq_offset(struct l2cap_chan *chan, __u16 seq1, __u16 seq2)
816 return chan->tx_win_max + 1 - seq2 + seq1;
819 static inline __u16 __next_seq(struct l2cap_chan *chan, __u16 seq)
821 return (seq + 1) % (chan->tx_win_max + 1);
824 static inline struct l2cap_chan *l2cap_chan_no_new_connection(struct l2cap_chan *chan)
829 static inline void l2cap_chan_no_teardown(struct l2cap_chan *chan, int err)
833 static inline void l2cap_chan_no_ready(struct l2cap_chan *chan)
837 static inline void l2cap_chan_no_defer(struct l2cap_chan *chan)
841 static inline void l2cap_chan_no_resume(struct l2cap_chan *chan)
845 static inline void l2cap_chan_no_set_shutdown(struct l2cap_chan *chan)
849 static inline long l2cap_chan_no_get_sndtimeo(struct l2cap_chan *chan)
854 extern bool disable_ertm;
855 extern bool enable_lecoc;
857 int l2cap_init_sockets(void);
858 void l2cap_cleanup_sockets(void);
859 bool l2cap_is_socket(struct socket *sock);
861 void __l2cap_le_connect_rsp_defer(struct l2cap_chan *chan);
862 void __l2cap_connect_rsp_defer(struct l2cap_chan *chan);
864 int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm);
865 int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid);
867 struct l2cap_chan *l2cap_chan_create(void);
868 void l2cap_chan_close(struct l2cap_chan *chan, int reason);
869 int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
870 bdaddr_t *dst, u8 dst_type);
871 int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len,
873 void l2cap_chan_busy(struct l2cap_chan *chan, int busy);
874 int l2cap_chan_check_security(struct l2cap_chan *chan);
875 void l2cap_chan_set_defaults(struct l2cap_chan *chan);
876 int l2cap_ertm_init(struct l2cap_chan *chan);
877 void l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan);
878 void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan);
879 void l2cap_chan_del(struct l2cap_chan *chan, int err);
880 void l2cap_send_conn_req(struct l2cap_chan *chan);
881 void l2cap_move_start(struct l2cap_chan *chan);
882 void l2cap_logical_cfm(struct l2cap_chan *chan, struct hci_chan *hchan,
884 void __l2cap_physical_cfm(struct l2cap_chan *chan, int result);
886 void l2cap_conn_get(struct l2cap_conn *conn);
887 void l2cap_conn_put(struct l2cap_conn *conn);
889 int l2cap_register_user(struct l2cap_conn *conn, struct l2cap_user *user);
890 void l2cap_unregister_user(struct l2cap_conn *conn, struct l2cap_user *user);
892 #endif /* __L2CAP_H */