2 BlueZ - Bluetooth protocol stack for Linux
3 Copyright (C) 2000-2001 Qualcomm Incorporated
5 Copyright (C) 2010 Google Inc.
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
139 #define L2CAP_FC_6LOWPAN 0x3e /* reserved and temporary value */
141 /* L2CAP Control Field bit masks */
142 #define L2CAP_CTRL_SAR 0xC000
143 #define L2CAP_CTRL_REQSEQ 0x3F00
144 #define L2CAP_CTRL_TXSEQ 0x007E
145 #define L2CAP_CTRL_SUPERVISE 0x000C
147 #define L2CAP_CTRL_RETRANS 0x0080
148 #define L2CAP_CTRL_FINAL 0x0080
149 #define L2CAP_CTRL_POLL 0x0010
150 #define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */
152 #define L2CAP_CTRL_TXSEQ_SHIFT 1
153 #define L2CAP_CTRL_SUPER_SHIFT 2
154 #define L2CAP_CTRL_POLL_SHIFT 4
155 #define L2CAP_CTRL_FINAL_SHIFT 7
156 #define L2CAP_CTRL_REQSEQ_SHIFT 8
157 #define L2CAP_CTRL_SAR_SHIFT 14
159 /* L2CAP Extended Control Field bit mask */
160 #define L2CAP_EXT_CTRL_TXSEQ 0xFFFC0000
161 #define L2CAP_EXT_CTRL_SAR 0x00030000
162 #define L2CAP_EXT_CTRL_SUPERVISE 0x00030000
163 #define L2CAP_EXT_CTRL_REQSEQ 0x0000FFFC
165 #define L2CAP_EXT_CTRL_POLL 0x00040000
166 #define L2CAP_EXT_CTRL_FINAL 0x00000002
167 #define L2CAP_EXT_CTRL_FRAME_TYPE 0x00000001 /* I- or S-Frame */
169 #define L2CAP_EXT_CTRL_FINAL_SHIFT 1
170 #define L2CAP_EXT_CTRL_REQSEQ_SHIFT 2
171 #define L2CAP_EXT_CTRL_SAR_SHIFT 16
172 #define L2CAP_EXT_CTRL_SUPER_SHIFT 16
173 #define L2CAP_EXT_CTRL_POLL_SHIFT 18
174 #define L2CAP_EXT_CTRL_TXSEQ_SHIFT 18
176 /* L2CAP Supervisory Function */
177 #define L2CAP_SUPER_RR 0x00
178 #define L2CAP_SUPER_REJ 0x01
179 #define L2CAP_SUPER_RNR 0x02
180 #define L2CAP_SUPER_SREJ 0x03
182 /* L2CAP Segmentation and Reassembly */
183 #define L2CAP_SAR_UNSEGMENTED 0x00
184 #define L2CAP_SAR_START 0x01
185 #define L2CAP_SAR_END 0x02
186 #define L2CAP_SAR_CONTINUE 0x03
188 /* L2CAP Command rej. reasons */
189 #define L2CAP_REJ_NOT_UNDERSTOOD 0x0000
190 #define L2CAP_REJ_MTU_EXCEEDED 0x0001
191 #define L2CAP_REJ_INVALID_CID 0x0002
193 /* L2CAP structures */
198 #define L2CAP_HDR_SIZE 4
199 #define L2CAP_ENH_HDR_SIZE 6
200 #define L2CAP_EXT_HDR_SIZE 8
202 #define L2CAP_FCS_SIZE 2
203 #define L2CAP_SDULEN_SIZE 2
204 #define L2CAP_PSMLEN_SIZE 2
205 #define L2CAP_ENH_CTRL_SIZE 2
206 #define L2CAP_EXT_CTRL_SIZE 4
208 struct l2cap_cmd_hdr {
213 #define L2CAP_CMD_HDR_SIZE 4
215 struct l2cap_cmd_rej_unk {
219 struct l2cap_cmd_rej_mtu {
224 struct l2cap_cmd_rej_cid {
230 struct l2cap_conn_req {
235 struct l2cap_conn_rsp {
242 /* protocol/service multiplexer (PSM) */
243 #define L2CAP_PSM_SDP 0x0001
244 #define L2CAP_PSM_RFCOMM 0x0003
245 #define L2CAP_PSM_3DSP 0x0021
247 /* channel identifier */
248 #define L2CAP_CID_SIGNALING 0x0001
249 #define L2CAP_CID_CONN_LESS 0x0002
250 #define L2CAP_CID_A2MP 0x0003
251 #define L2CAP_CID_ATT 0x0004
252 #define L2CAP_CID_LE_SIGNALING 0x0005
253 #define L2CAP_CID_SMP 0x0006
254 #define L2CAP_CID_DYN_START 0x0040
255 #define L2CAP_CID_DYN_END 0xffff
256 #define L2CAP_CID_LE_DYN_END 0x007f
258 /* connect/create channel results */
259 #define L2CAP_CR_SUCCESS 0x0000
260 #define L2CAP_CR_PEND 0x0001
261 #define L2CAP_CR_BAD_PSM 0x0002
262 #define L2CAP_CR_SEC_BLOCK 0x0003
263 #define L2CAP_CR_NO_MEM 0x0004
264 #define L2CAP_CR_BAD_AMP 0x0005
265 #define L2CAP_CR_AUTHENTICATION 0x0005
266 #define L2CAP_CR_AUTHORIZATION 0x0006
267 #define L2CAP_CR_BAD_KEY_SIZE 0x0007
268 #define L2CAP_CR_ENCRYPTION 0x0008
270 /* connect/create channel status */
271 #define L2CAP_CS_NO_INFO 0x0000
272 #define L2CAP_CS_AUTHEN_PEND 0x0001
273 #define L2CAP_CS_AUTHOR_PEND 0x0002
275 struct l2cap_conf_req {
281 struct l2cap_conf_rsp {
288 #define L2CAP_CONF_SUCCESS 0x0000
289 #define L2CAP_CONF_UNACCEPT 0x0001
290 #define L2CAP_CONF_REJECT 0x0002
291 #define L2CAP_CONF_UNKNOWN 0x0003
292 #define L2CAP_CONF_PENDING 0x0004
293 #define L2CAP_CONF_EFS_REJECT 0x0005
295 /* configuration req/rsp continuation flag */
296 #define L2CAP_CONF_FLAG_CONTINUATION 0x0001
298 struct l2cap_conf_opt {
303 #define L2CAP_CONF_OPT_SIZE 2
305 #define L2CAP_CONF_HINT 0x80
306 #define L2CAP_CONF_MASK 0x7f
308 #define L2CAP_CONF_MTU 0x01
309 #define L2CAP_CONF_FLUSH_TO 0x02
310 #define L2CAP_CONF_QOS 0x03
311 #define L2CAP_CONF_RFC 0x04
312 #define L2CAP_CONF_FCS 0x05
313 #define L2CAP_CONF_EFS 0x06
314 #define L2CAP_CONF_EWS 0x07
316 #define L2CAP_CONF_MAX_SIZE 22
318 struct l2cap_conf_rfc {
322 __le16 retrans_timeout;
323 __le16 monitor_timeout;
327 #define L2CAP_MODE_BASIC 0x00
328 #define L2CAP_MODE_RETRANS 0x01
329 #define L2CAP_MODE_FLOWCTL 0x02
330 #define L2CAP_MODE_ERTM 0x03
331 #define L2CAP_MODE_STREAMING 0x04
333 /* Unlike the above this one doesn't actually map to anything that would
334 * ever be sent over the air. Therefore, use a value that's unlikely to
335 * ever be used in the BR/EDR configuration phase.
337 #define L2CAP_MODE_LE_FLOWCTL 0x80
339 struct l2cap_conf_efs {
348 #define L2CAP_SERV_NOTRAFIC 0x00
349 #define L2CAP_SERV_BESTEFFORT 0x01
350 #define L2CAP_SERV_GUARANTEED 0x02
352 #define L2CAP_BESTEFFORT_ID 0x01
354 struct l2cap_disconn_req {
359 struct l2cap_disconn_rsp {
364 struct l2cap_info_req {
368 struct l2cap_info_rsp {
374 struct l2cap_create_chan_req {
380 struct l2cap_create_chan_rsp {
387 struct l2cap_move_chan_req {
392 struct l2cap_move_chan_rsp {
397 #define L2CAP_MR_SUCCESS 0x0000
398 #define L2CAP_MR_PEND 0x0001
399 #define L2CAP_MR_BAD_ID 0x0002
400 #define L2CAP_MR_SAME_ID 0x0003
401 #define L2CAP_MR_NOT_SUPP 0x0004
402 #define L2CAP_MR_COLLISION 0x0005
403 #define L2CAP_MR_NOT_ALLOWED 0x0006
405 struct l2cap_move_chan_cfm {
410 #define L2CAP_MC_CONFIRMED 0x0000
411 #define L2CAP_MC_UNCONFIRMED 0x0001
413 struct l2cap_move_chan_cfm_rsp {
418 #define L2CAP_IT_CL_MTU 0x0001
419 #define L2CAP_IT_FEAT_MASK 0x0002
420 #define L2CAP_IT_FIXED_CHAN 0x0003
423 #define L2CAP_IR_SUCCESS 0x0000
424 #define L2CAP_IR_NOTSUPP 0x0001
426 struct l2cap_conn_param_update_req {
430 __le16 to_multiplier;
433 struct l2cap_conn_param_update_rsp {
437 /* Connection Parameters result */
438 #define L2CAP_CONN_PARAM_ACCEPTED 0x0000
439 #define L2CAP_CONN_PARAM_REJECTED 0x0001
441 #define L2CAP_LE_MAX_CREDITS 10
442 #define L2CAP_LE_DEFAULT_MPS 230
444 struct l2cap_le_conn_req {
452 struct l2cap_le_conn_rsp {
460 struct l2cap_le_credits {
465 /* ----- L2CAP channels and connections ----- */
466 struct l2cap_seq_list {
473 #define L2CAP_SEQ_LIST_CLEAR 0xFFFF
474 #define L2CAP_SEQ_LIST_TAIL 0x8000
477 struct l2cap_conn *conn;
478 struct hci_conn *hs_hcon;
479 struct hci_chan *hs_hchan;
515 __u16 retrans_timeout;
516 __u16 monitor_timeout;
525 unsigned long conf_state;
526 unsigned long conn_state;
536 __u16 expected_ack_seq;
537 __u16 expected_tx_seq;
539 __u16 srej_save_reqseq;
540 __u16 last_acked_seq;
542 __u16 unacked_frames;
546 struct sk_buff *sdu_last_frag;
555 __u32 local_sdu_itime;
557 __u32 local_flush_to;
562 __u32 remote_sdu_itime;
563 __u32 remote_acc_lat;
564 __u32 remote_flush_to;
566 struct delayed_work chan_timer;
567 struct delayed_work retrans_timer;
568 struct delayed_work monitor_timer;
569 struct delayed_work ack_timer;
571 struct sk_buff *tx_send_head;
572 struct sk_buff_head tx_q;
573 struct sk_buff_head srej_q;
574 struct l2cap_seq_list srej_list;
575 struct l2cap_seq_list retrans_list;
577 struct list_head list;
578 struct list_head global_l;
581 struct l2cap_ops *ops;
588 struct l2cap_chan *(*new_connection) (struct l2cap_chan *chan);
589 int (*recv) (struct l2cap_chan * chan,
590 struct sk_buff *skb);
591 void (*teardown) (struct l2cap_chan *chan, int err);
592 void (*close) (struct l2cap_chan *chan);
593 void (*state_change) (struct l2cap_chan *chan,
595 void (*ready) (struct l2cap_chan *chan);
596 void (*defer) (struct l2cap_chan *chan);
597 void (*resume) (struct l2cap_chan *chan);
598 void (*suspend) (struct l2cap_chan *chan);
599 void (*set_shutdown) (struct l2cap_chan *chan);
600 long (*get_sndtimeo) (struct l2cap_chan *chan);
601 struct sk_buff *(*alloc_skb) (struct l2cap_chan *chan,
602 unsigned long len, int nb);
606 struct hci_conn *hcon;
607 struct hci_chan *hchan;
612 __u8 fixed_chan_mask;
618 struct delayed_work info_timer;
622 struct sk_buff *rx_skb;
628 struct delayed_work security_timer;
629 struct smp_chan *smp_chan;
631 struct list_head chan_l;
632 struct mutex chan_lock;
634 struct list_head users;
638 struct list_head list;
639 int (*probe) (struct l2cap_conn *conn, struct l2cap_user *user);
640 void (*remove) (struct l2cap_conn *conn, struct l2cap_user *user);
643 #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01
644 #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04
645 #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08
647 #define L2CAP_CHAN_RAW 1
648 #define L2CAP_CHAN_CONN_LESS 2
649 #define L2CAP_CHAN_CONN_ORIENTED 3
650 #define L2CAP_CHAN_CONN_FIX_A2MP 4
652 /* ----- L2CAP socket info ----- */
653 #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
657 struct l2cap_chan *chan;
658 struct sk_buff *rx_busy_skb;
676 #define L2CAP_CONF_MAX_CONF_REQ 2
677 #define L2CAP_CONF_MAX_CONF_RSP 2
691 /* Definitions for flags in l2cap_chan */
700 FLAG_LE_CONN_REQ_SENT,
705 L2CAP_TX_STATE_WAIT_F,
710 L2CAP_RX_STATE_SREJ_SENT,
712 L2CAP_RX_STATE_WAIT_P,
713 L2CAP_RX_STATE_WAIT_F,
717 L2CAP_TXSEQ_EXPECTED,
718 L2CAP_TXSEQ_EXPECTED_SREJ,
719 L2CAP_TXSEQ_UNEXPECTED,
720 L2CAP_TXSEQ_UNEXPECTED_SREJ,
721 L2CAP_TXSEQ_DUPLICATE,
722 L2CAP_TXSEQ_DUPLICATE_SREJ,
724 L2CAP_TXSEQ_INVALID_IGNORE,
728 L2CAP_EV_DATA_REQUEST,
729 L2CAP_EV_LOCAL_BUSY_DETECTED,
730 L2CAP_EV_LOCAL_BUSY_CLEAR,
731 L2CAP_EV_RECV_REQSEQ_AND_FBIT,
735 L2CAP_EV_EXPLICIT_POLL,
736 L2CAP_EV_RECV_IFRAME,
745 L2CAP_MOVE_ROLE_NONE,
746 L2CAP_MOVE_ROLE_INITIATOR,
747 L2CAP_MOVE_ROLE_RESPONDER,
754 L2CAP_MOVE_WAIT_RSP_SUCCESS,
755 L2CAP_MOVE_WAIT_CONFIRM,
756 L2CAP_MOVE_WAIT_CONFIRM_RSP,
757 L2CAP_MOVE_WAIT_LOGICAL_COMP,
758 L2CAP_MOVE_WAIT_LOGICAL_CFM,
759 L2CAP_MOVE_WAIT_LOCAL_BUSY,
760 L2CAP_MOVE_WAIT_PREPARE,
763 void l2cap_chan_hold(struct l2cap_chan *c);
764 void l2cap_chan_put(struct l2cap_chan *c);
766 static inline void l2cap_chan_lock(struct l2cap_chan *chan)
768 mutex_lock(&chan->lock);
771 static inline void l2cap_chan_unlock(struct l2cap_chan *chan)
773 mutex_unlock(&chan->lock);
776 static inline void l2cap_set_timer(struct l2cap_chan *chan,
777 struct delayed_work *work, long timeout)
779 BT_DBG("chan %p state %s timeout %ld", chan,
780 state_to_string(chan->state), timeout);
782 /* If delayed work cancelled do not hold(chan)
783 since it is already done with previous set_timer */
784 if (!cancel_delayed_work(work))
785 l2cap_chan_hold(chan);
787 schedule_delayed_work(work, timeout);
790 static inline bool l2cap_clear_timer(struct l2cap_chan *chan,
791 struct delayed_work *work)
795 /* put(chan) if delayed work cancelled otherwise it
796 is done in delayed work function */
797 ret = cancel_delayed_work(work);
799 l2cap_chan_put(chan);
804 #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t))
805 #define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer)
806 #define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer)
807 #define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer)
808 #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \
809 msecs_to_jiffies(L2CAP_DEFAULT_ACK_TO));
810 #define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer)
812 static inline int __seq_offset(struct l2cap_chan *chan, __u16 seq1, __u16 seq2)
817 return chan->tx_win_max + 1 - seq2 + seq1;
820 static inline __u16 __next_seq(struct l2cap_chan *chan, __u16 seq)
822 return (seq + 1) % (chan->tx_win_max + 1);
825 static inline struct l2cap_chan *l2cap_chan_no_new_connection(struct l2cap_chan *chan)
830 static inline void l2cap_chan_no_teardown(struct l2cap_chan *chan, int err)
834 static inline void l2cap_chan_no_ready(struct l2cap_chan *chan)
838 static inline void l2cap_chan_no_defer(struct l2cap_chan *chan)
842 static inline void l2cap_chan_no_resume(struct l2cap_chan *chan)
846 static inline void l2cap_chan_no_set_shutdown(struct l2cap_chan *chan)
850 static inline long l2cap_chan_no_get_sndtimeo(struct l2cap_chan *chan)
855 extern bool disable_ertm;
856 extern bool enable_lecoc;
858 int l2cap_init_sockets(void);
859 void l2cap_cleanup_sockets(void);
860 bool l2cap_is_socket(struct socket *sock);
862 void __l2cap_le_connect_rsp_defer(struct l2cap_chan *chan);
863 void __l2cap_connect_rsp_defer(struct l2cap_chan *chan);
865 int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm);
866 int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid);
868 struct l2cap_chan *l2cap_chan_create(void);
869 void l2cap_chan_close(struct l2cap_chan *chan, int reason);
870 int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
871 bdaddr_t *dst, u8 dst_type);
872 int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len,
874 void l2cap_chan_busy(struct l2cap_chan *chan, int busy);
875 int l2cap_chan_check_security(struct l2cap_chan *chan);
876 void l2cap_chan_set_defaults(struct l2cap_chan *chan);
877 int l2cap_ertm_init(struct l2cap_chan *chan);
878 void l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan);
879 void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan);
880 void l2cap_chan_del(struct l2cap_chan *chan, int err);
881 void l2cap_send_conn_req(struct l2cap_chan *chan);
882 void l2cap_move_start(struct l2cap_chan *chan);
883 void l2cap_logical_cfm(struct l2cap_chan *chan, struct hci_chan *hchan,
885 void __l2cap_physical_cfm(struct l2cap_chan *chan, int result);
887 void l2cap_conn_get(struct l2cap_conn *conn);
888 void l2cap_conn_put(struct l2cap_conn *conn);
890 int l2cap_register_user(struct l2cap_conn *conn, struct l2cap_user *user);
891 void l2cap_unregister_user(struct l2cap_conn *conn, struct l2cap_user *user);
893 #endif /* __L2CAP_H */