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
256 /* connect/create channel results */
257 #define L2CAP_CR_SUCCESS 0x0000
258 #define L2CAP_CR_PEND 0x0001
259 #define L2CAP_CR_BAD_PSM 0x0002
260 #define L2CAP_CR_SEC_BLOCK 0x0003
261 #define L2CAP_CR_NO_MEM 0x0004
262 #define L2CAP_CR_BAD_AMP 0x0005
263 #define L2CAP_CR_AUTHENTICATION 0x0005
264 #define L2CAP_CR_AUTHORIZATION 0x0006
265 #define L2CAP_CR_BAD_KEY_SIZE 0x0007
266 #define L2CAP_CR_ENCRYPTION 0x0008
268 /* connect/create channel status */
269 #define L2CAP_CS_NO_INFO 0x0000
270 #define L2CAP_CS_AUTHEN_PEND 0x0001
271 #define L2CAP_CS_AUTHOR_PEND 0x0002
273 struct l2cap_conf_req {
279 struct l2cap_conf_rsp {
286 #define L2CAP_CONF_SUCCESS 0x0000
287 #define L2CAP_CONF_UNACCEPT 0x0001
288 #define L2CAP_CONF_REJECT 0x0002
289 #define L2CAP_CONF_UNKNOWN 0x0003
290 #define L2CAP_CONF_PENDING 0x0004
291 #define L2CAP_CONF_EFS_REJECT 0x0005
293 /* configuration req/rsp continuation flag */
294 #define L2CAP_CONF_FLAG_CONTINUATION 0x0001
296 struct l2cap_conf_opt {
301 #define L2CAP_CONF_OPT_SIZE 2
303 #define L2CAP_CONF_HINT 0x80
304 #define L2CAP_CONF_MASK 0x7f
306 #define L2CAP_CONF_MTU 0x01
307 #define L2CAP_CONF_FLUSH_TO 0x02
308 #define L2CAP_CONF_QOS 0x03
309 #define L2CAP_CONF_RFC 0x04
310 #define L2CAP_CONF_FCS 0x05
311 #define L2CAP_CONF_EFS 0x06
312 #define L2CAP_CONF_EWS 0x07
314 #define L2CAP_CONF_MAX_SIZE 22
316 struct l2cap_conf_rfc {
320 __le16 retrans_timeout;
321 __le16 monitor_timeout;
325 #define L2CAP_MODE_BASIC 0x00
326 #define L2CAP_MODE_RETRANS 0x01
327 #define L2CAP_MODE_FLOWCTL 0x02
328 #define L2CAP_MODE_ERTM 0x03
329 #define L2CAP_MODE_STREAMING 0x04
331 /* Unlike the above this one doesn't actually map to anything that would
332 * ever be sent over the air. Therefore, use a value that's unlikely to
333 * ever be used in the BR/EDR configuration phase.
335 #define L2CAP_MODE_LE_FLOWCTL 0x80
337 struct l2cap_conf_efs {
346 #define L2CAP_SERV_NOTRAFIC 0x00
347 #define L2CAP_SERV_BESTEFFORT 0x01
348 #define L2CAP_SERV_GUARANTEED 0x02
350 #define L2CAP_BESTEFFORT_ID 0x01
352 struct l2cap_disconn_req {
357 struct l2cap_disconn_rsp {
362 struct l2cap_info_req {
366 struct l2cap_info_rsp {
372 struct l2cap_create_chan_req {
378 struct l2cap_create_chan_rsp {
385 struct l2cap_move_chan_req {
390 struct l2cap_move_chan_rsp {
395 #define L2CAP_MR_SUCCESS 0x0000
396 #define L2CAP_MR_PEND 0x0001
397 #define L2CAP_MR_BAD_ID 0x0002
398 #define L2CAP_MR_SAME_ID 0x0003
399 #define L2CAP_MR_NOT_SUPP 0x0004
400 #define L2CAP_MR_COLLISION 0x0005
401 #define L2CAP_MR_NOT_ALLOWED 0x0006
403 struct l2cap_move_chan_cfm {
408 #define L2CAP_MC_CONFIRMED 0x0000
409 #define L2CAP_MC_UNCONFIRMED 0x0001
411 struct l2cap_move_chan_cfm_rsp {
416 #define L2CAP_IT_CL_MTU 0x0001
417 #define L2CAP_IT_FEAT_MASK 0x0002
418 #define L2CAP_IT_FIXED_CHAN 0x0003
421 #define L2CAP_IR_SUCCESS 0x0000
422 #define L2CAP_IR_NOTSUPP 0x0001
424 struct l2cap_conn_param_update_req {
428 __le16 to_multiplier;
431 struct l2cap_conn_param_update_rsp {
435 /* Connection Parameters result */
436 #define L2CAP_CONN_PARAM_ACCEPTED 0x0000
437 #define L2CAP_CONN_PARAM_REJECTED 0x0001
439 #define L2CAP_LE_MAX_CREDITS 10
440 #define L2CAP_LE_DEFAULT_MPS 230
442 struct l2cap_le_conn_req {
450 struct l2cap_le_conn_rsp {
458 struct l2cap_le_credits {
463 /* ----- L2CAP channels and connections ----- */
464 struct l2cap_seq_list {
471 #define L2CAP_SEQ_LIST_CLEAR 0xFFFF
472 #define L2CAP_SEQ_LIST_TAIL 0x8000
475 struct l2cap_conn *conn;
476 struct hci_conn *hs_hcon;
477 struct hci_chan *hs_hchan;
513 __u16 retrans_timeout;
514 __u16 monitor_timeout;
523 unsigned long conf_state;
524 unsigned long conn_state;
534 __u16 expected_ack_seq;
535 __u16 expected_tx_seq;
537 __u16 srej_save_reqseq;
538 __u16 last_acked_seq;
540 __u16 unacked_frames;
544 struct sk_buff *sdu_last_frag;
553 __u32 local_sdu_itime;
555 __u32 local_flush_to;
560 __u32 remote_sdu_itime;
561 __u32 remote_acc_lat;
562 __u32 remote_flush_to;
564 struct delayed_work chan_timer;
565 struct delayed_work retrans_timer;
566 struct delayed_work monitor_timer;
567 struct delayed_work ack_timer;
569 struct sk_buff *tx_send_head;
570 struct sk_buff_head tx_q;
571 struct sk_buff_head srej_q;
572 struct l2cap_seq_list srej_list;
573 struct l2cap_seq_list retrans_list;
575 struct list_head list;
576 struct list_head global_l;
579 struct l2cap_ops *ops;
586 struct l2cap_chan *(*new_connection) (struct l2cap_chan *chan);
587 int (*recv) (struct l2cap_chan * chan,
588 struct sk_buff *skb);
589 void (*teardown) (struct l2cap_chan *chan, int err);
590 void (*close) (struct l2cap_chan *chan);
591 void (*state_change) (struct l2cap_chan *chan,
593 void (*ready) (struct l2cap_chan *chan);
594 void (*defer) (struct l2cap_chan *chan);
595 void (*resume) (struct l2cap_chan *chan);
596 void (*suspend) (struct l2cap_chan *chan);
597 void (*set_shutdown) (struct l2cap_chan *chan);
598 long (*get_sndtimeo) (struct l2cap_chan *chan);
599 struct sk_buff *(*alloc_skb) (struct l2cap_chan *chan,
600 unsigned long len, int nb);
604 struct hci_conn *hcon;
605 struct hci_chan *hchan;
610 __u8 fixed_chan_mask;
616 struct delayed_work info_timer;
620 struct sk_buff *rx_skb;
626 struct delayed_work security_timer;
627 struct smp_chan *smp_chan;
629 struct list_head chan_l;
630 struct mutex chan_lock;
632 struct list_head users;
636 struct list_head list;
637 int (*probe) (struct l2cap_conn *conn, struct l2cap_user *user);
638 void (*remove) (struct l2cap_conn *conn, struct l2cap_user *user);
641 #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01
642 #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04
643 #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08
645 #define L2CAP_CHAN_RAW 1
646 #define L2CAP_CHAN_CONN_LESS 2
647 #define L2CAP_CHAN_CONN_ORIENTED 3
648 #define L2CAP_CHAN_CONN_FIX_A2MP 4
650 /* ----- L2CAP socket info ----- */
651 #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
655 struct l2cap_chan *chan;
656 struct sk_buff *rx_busy_skb;
674 #define L2CAP_CONF_MAX_CONF_REQ 2
675 #define L2CAP_CONF_MAX_CONF_RSP 2
689 /* Definitions for flags in l2cap_chan */
702 L2CAP_TX_STATE_WAIT_F,
707 L2CAP_RX_STATE_SREJ_SENT,
709 L2CAP_RX_STATE_WAIT_P,
710 L2CAP_RX_STATE_WAIT_F,
714 L2CAP_TXSEQ_EXPECTED,
715 L2CAP_TXSEQ_EXPECTED_SREJ,
716 L2CAP_TXSEQ_UNEXPECTED,
717 L2CAP_TXSEQ_UNEXPECTED_SREJ,
718 L2CAP_TXSEQ_DUPLICATE,
719 L2CAP_TXSEQ_DUPLICATE_SREJ,
721 L2CAP_TXSEQ_INVALID_IGNORE,
725 L2CAP_EV_DATA_REQUEST,
726 L2CAP_EV_LOCAL_BUSY_DETECTED,
727 L2CAP_EV_LOCAL_BUSY_CLEAR,
728 L2CAP_EV_RECV_REQSEQ_AND_FBIT,
732 L2CAP_EV_EXPLICIT_POLL,
733 L2CAP_EV_RECV_IFRAME,
742 L2CAP_MOVE_ROLE_NONE,
743 L2CAP_MOVE_ROLE_INITIATOR,
744 L2CAP_MOVE_ROLE_RESPONDER,
751 L2CAP_MOVE_WAIT_RSP_SUCCESS,
752 L2CAP_MOVE_WAIT_CONFIRM,
753 L2CAP_MOVE_WAIT_CONFIRM_RSP,
754 L2CAP_MOVE_WAIT_LOGICAL_COMP,
755 L2CAP_MOVE_WAIT_LOGICAL_CFM,
756 L2CAP_MOVE_WAIT_LOCAL_BUSY,
757 L2CAP_MOVE_WAIT_PREPARE,
760 void l2cap_chan_hold(struct l2cap_chan *c);
761 void l2cap_chan_put(struct l2cap_chan *c);
763 static inline void l2cap_chan_lock(struct l2cap_chan *chan)
765 mutex_lock(&chan->lock);
768 static inline void l2cap_chan_unlock(struct l2cap_chan *chan)
770 mutex_unlock(&chan->lock);
773 static inline void l2cap_set_timer(struct l2cap_chan *chan,
774 struct delayed_work *work, long timeout)
776 BT_DBG("chan %p state %s timeout %ld", chan,
777 state_to_string(chan->state), timeout);
779 /* If delayed work cancelled do not hold(chan)
780 since it is already done with previous set_timer */
781 if (!cancel_delayed_work(work))
782 l2cap_chan_hold(chan);
784 schedule_delayed_work(work, timeout);
787 static inline bool l2cap_clear_timer(struct l2cap_chan *chan,
788 struct delayed_work *work)
792 /* put(chan) if delayed work cancelled otherwise it
793 is done in delayed work function */
794 ret = cancel_delayed_work(work);
796 l2cap_chan_put(chan);
801 #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t))
802 #define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer)
803 #define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer)
804 #define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer)
805 #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \
806 msecs_to_jiffies(L2CAP_DEFAULT_ACK_TO));
807 #define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer)
809 static inline int __seq_offset(struct l2cap_chan *chan, __u16 seq1, __u16 seq2)
814 return chan->tx_win_max + 1 - seq2 + seq1;
817 static inline __u16 __next_seq(struct l2cap_chan *chan, __u16 seq)
819 return (seq + 1) % (chan->tx_win_max + 1);
822 static inline struct l2cap_chan *l2cap_chan_no_new_connection(struct l2cap_chan *chan)
827 static inline void l2cap_chan_no_teardown(struct l2cap_chan *chan, int err)
831 static inline void l2cap_chan_no_ready(struct l2cap_chan *chan)
835 static inline void l2cap_chan_no_defer(struct l2cap_chan *chan)
839 static inline void l2cap_chan_no_resume(struct l2cap_chan *chan)
843 static inline void l2cap_chan_no_set_shutdown(struct l2cap_chan *chan)
847 static inline long l2cap_chan_no_get_sndtimeo(struct l2cap_chan *chan)
852 extern bool disable_ertm;
853 extern bool enable_lecoc;
855 int l2cap_init_sockets(void);
856 void l2cap_cleanup_sockets(void);
857 bool l2cap_is_socket(struct socket *sock);
859 void __l2cap_le_connect_rsp_defer(struct l2cap_chan *chan);
860 void __l2cap_connect_rsp_defer(struct l2cap_chan *chan);
862 int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm);
863 int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid);
865 struct l2cap_chan *l2cap_chan_create(void);
866 void l2cap_chan_close(struct l2cap_chan *chan, int reason);
867 int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
868 bdaddr_t *dst, u8 dst_type);
869 int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len,
871 void l2cap_chan_busy(struct l2cap_chan *chan, int busy);
872 int l2cap_chan_check_security(struct l2cap_chan *chan);
873 void l2cap_chan_set_defaults(struct l2cap_chan *chan);
874 void l2cap_le_flowctl_init(struct l2cap_chan *chan);
875 int l2cap_ertm_init(struct l2cap_chan *chan);
876 void l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan);
877 void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan);
878 void l2cap_chan_del(struct l2cap_chan *chan, int err);
879 void l2cap_send_conn_req(struct l2cap_chan *chan);
880 void l2cap_move_start(struct l2cap_chan *chan);
881 void l2cap_logical_cfm(struct l2cap_chan *chan, struct hci_chan *hchan,
883 void __l2cap_physical_cfm(struct l2cap_chan *chan, int result);
885 void l2cap_conn_get(struct l2cap_conn *conn);
886 void l2cap_conn_put(struct l2cap_conn *conn);
888 int l2cap_register_user(struct l2cap_conn *conn, struct l2cap_user *user);
889 void l2cap_unregister_user(struct l2cap_conn *conn, struct l2cap_user *user);
891 #endif /* __L2CAP_H */