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>
31 #include <linux/atomic.h>
34 #define L2CAP_DEFAULT_MTU 672
35 #define L2CAP_DEFAULT_MIN_MTU 48
36 #define L2CAP_DEFAULT_FLUSH_TO 0xFFFF
37 #define L2CAP_EFS_DEFAULT_FLUSH_TO 0xFFFFFFFF
38 #define L2CAP_DEFAULT_TX_WINDOW 63
39 #define L2CAP_DEFAULT_EXT_WINDOW 0x3FFF
40 #define L2CAP_DEFAULT_MAX_TX 3
41 #define L2CAP_DEFAULT_RETRANS_TO 2000 /* 2 seconds */
42 #define L2CAP_DEFAULT_MONITOR_TO 12000 /* 12 seconds */
43 #define L2CAP_DEFAULT_MAX_PDU_SIZE 1492 /* Sized for AMP packet */
44 #define L2CAP_DEFAULT_ACK_TO 200
45 #define L2CAP_DEFAULT_MAX_SDU_SIZE 0xFFFF
46 #define L2CAP_DEFAULT_SDU_ITIME 0xFFFFFFFF
47 #define L2CAP_DEFAULT_ACC_LAT 0xFFFFFFFF
48 #define L2CAP_BREDR_MAX_PAYLOAD 1019 /* 3-DH5 packet */
49 #define L2CAP_LE_MIN_MTU 23
51 #define L2CAP_DISC_TIMEOUT msecs_to_jiffies(100)
52 #define L2CAP_DISC_REJ_TIMEOUT msecs_to_jiffies(5000)
53 #define L2CAP_ENC_TIMEOUT msecs_to_jiffies(5000)
54 #define L2CAP_CONN_TIMEOUT msecs_to_jiffies(40000)
55 #define L2CAP_INFO_TIMEOUT msecs_to_jiffies(4000)
56 #define L2CAP_MOVE_TIMEOUT msecs_to_jiffies(4000)
57 #define L2CAP_MOVE_ERTX_TIMEOUT msecs_to_jiffies(60000)
59 #define L2CAP_A2MP_DEFAULT_MTU 670
61 /* L2CAP socket address */
63 sa_family_t l2_family;
70 /* L2CAP socket options */
71 #define L2CAP_OPTIONS 0x01
72 struct l2cap_options {
82 #define L2CAP_CONNINFO 0x02
83 struct l2cap_conninfo {
89 #define L2CAP_LM_MASTER 0x0001
90 #define L2CAP_LM_AUTH 0x0002
91 #define L2CAP_LM_ENCRYPT 0x0004
92 #define L2CAP_LM_TRUSTED 0x0008
93 #define L2CAP_LM_RELIABLE 0x0010
94 #define L2CAP_LM_SECURE 0x0020
95 #define L2CAP_LM_FIPS 0x0040
97 /* L2CAP command codes */
98 #define L2CAP_COMMAND_REJ 0x01
99 #define L2CAP_CONN_REQ 0x02
100 #define L2CAP_CONN_RSP 0x03
101 #define L2CAP_CONF_REQ 0x04
102 #define L2CAP_CONF_RSP 0x05
103 #define L2CAP_DISCONN_REQ 0x06
104 #define L2CAP_DISCONN_RSP 0x07
105 #define L2CAP_ECHO_REQ 0x08
106 #define L2CAP_ECHO_RSP 0x09
107 #define L2CAP_INFO_REQ 0x0a
108 #define L2CAP_INFO_RSP 0x0b
109 #define L2CAP_CREATE_CHAN_REQ 0x0c
110 #define L2CAP_CREATE_CHAN_RSP 0x0d
111 #define L2CAP_MOVE_CHAN_REQ 0x0e
112 #define L2CAP_MOVE_CHAN_RSP 0x0f
113 #define L2CAP_MOVE_CHAN_CFM 0x10
114 #define L2CAP_MOVE_CHAN_CFM_RSP 0x11
115 #define L2CAP_CONN_PARAM_UPDATE_REQ 0x12
116 #define L2CAP_CONN_PARAM_UPDATE_RSP 0x13
117 #define L2CAP_LE_CONN_REQ 0x14
118 #define L2CAP_LE_CONN_RSP 0x15
119 #define L2CAP_LE_CREDITS 0x16
121 /* L2CAP extended feature mask */
122 #define L2CAP_FEAT_FLOWCTL 0x00000001
123 #define L2CAP_FEAT_RETRANS 0x00000002
124 #define L2CAP_FEAT_BIDIR_QOS 0x00000004
125 #define L2CAP_FEAT_ERTM 0x00000008
126 #define L2CAP_FEAT_STREAMING 0x00000010
127 #define L2CAP_FEAT_FCS 0x00000020
128 #define L2CAP_FEAT_EXT_FLOW 0x00000040
129 #define L2CAP_FEAT_FIXED_CHAN 0x00000080
130 #define L2CAP_FEAT_EXT_WINDOW 0x00000100
131 #define L2CAP_FEAT_UCD 0x00000200
133 /* L2CAP checksum option */
134 #define L2CAP_FCS_NONE 0x00
135 #define L2CAP_FCS_CRC16 0x01
137 /* L2CAP fixed channels */
138 #define L2CAP_FC_SIG_BREDR 0x02
139 #define L2CAP_FC_CONNLESS 0x04
140 #define L2CAP_FC_A2MP 0x08
141 #define L2CAP_FC_ATT 0x10
142 #define L2CAP_FC_SIG_LE 0x20
143 #define L2CAP_FC_SMP_LE 0x40
144 #define L2CAP_FC_SMP_BREDR 0x80
146 /* L2CAP Control Field bit masks */
147 #define L2CAP_CTRL_SAR 0xC000
148 #define L2CAP_CTRL_REQSEQ 0x3F00
149 #define L2CAP_CTRL_TXSEQ 0x007E
150 #define L2CAP_CTRL_SUPERVISE 0x000C
152 #define L2CAP_CTRL_RETRANS 0x0080
153 #define L2CAP_CTRL_FINAL 0x0080
154 #define L2CAP_CTRL_POLL 0x0010
155 #define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */
157 #define L2CAP_CTRL_TXSEQ_SHIFT 1
158 #define L2CAP_CTRL_SUPER_SHIFT 2
159 #define L2CAP_CTRL_POLL_SHIFT 4
160 #define L2CAP_CTRL_FINAL_SHIFT 7
161 #define L2CAP_CTRL_REQSEQ_SHIFT 8
162 #define L2CAP_CTRL_SAR_SHIFT 14
164 /* L2CAP Extended Control Field bit mask */
165 #define L2CAP_EXT_CTRL_TXSEQ 0xFFFC0000
166 #define L2CAP_EXT_CTRL_SAR 0x00030000
167 #define L2CAP_EXT_CTRL_SUPERVISE 0x00030000
168 #define L2CAP_EXT_CTRL_REQSEQ 0x0000FFFC
170 #define L2CAP_EXT_CTRL_POLL 0x00040000
171 #define L2CAP_EXT_CTRL_FINAL 0x00000002
172 #define L2CAP_EXT_CTRL_FRAME_TYPE 0x00000001 /* I- or S-Frame */
174 #define L2CAP_EXT_CTRL_FINAL_SHIFT 1
175 #define L2CAP_EXT_CTRL_REQSEQ_SHIFT 2
176 #define L2CAP_EXT_CTRL_SAR_SHIFT 16
177 #define L2CAP_EXT_CTRL_SUPER_SHIFT 16
178 #define L2CAP_EXT_CTRL_POLL_SHIFT 18
179 #define L2CAP_EXT_CTRL_TXSEQ_SHIFT 18
181 /* L2CAP Supervisory Function */
182 #define L2CAP_SUPER_RR 0x00
183 #define L2CAP_SUPER_REJ 0x01
184 #define L2CAP_SUPER_RNR 0x02
185 #define L2CAP_SUPER_SREJ 0x03
187 /* L2CAP Segmentation and Reassembly */
188 #define L2CAP_SAR_UNSEGMENTED 0x00
189 #define L2CAP_SAR_START 0x01
190 #define L2CAP_SAR_END 0x02
191 #define L2CAP_SAR_CONTINUE 0x03
193 /* L2CAP Command rej. reasons */
194 #define L2CAP_REJ_NOT_UNDERSTOOD 0x0000
195 #define L2CAP_REJ_MTU_EXCEEDED 0x0001
196 #define L2CAP_REJ_INVALID_CID 0x0002
198 /* L2CAP structures */
203 #define L2CAP_HDR_SIZE 4
204 #define L2CAP_ENH_HDR_SIZE 6
205 #define L2CAP_EXT_HDR_SIZE 8
207 #define L2CAP_FCS_SIZE 2
208 #define L2CAP_SDULEN_SIZE 2
209 #define L2CAP_PSMLEN_SIZE 2
210 #define L2CAP_ENH_CTRL_SIZE 2
211 #define L2CAP_EXT_CTRL_SIZE 4
213 struct l2cap_cmd_hdr {
218 #define L2CAP_CMD_HDR_SIZE 4
220 struct l2cap_cmd_rej_unk {
224 struct l2cap_cmd_rej_mtu {
229 struct l2cap_cmd_rej_cid {
235 struct l2cap_conn_req {
240 struct l2cap_conn_rsp {
247 /* protocol/service multiplexer (PSM) */
248 #define L2CAP_PSM_SDP 0x0001
249 #define L2CAP_PSM_RFCOMM 0x0003
250 #define L2CAP_PSM_3DSP 0x0021
251 #define L2CAP_PSM_IPSP 0x0023 /* 6LoWPAN */
253 /* channel identifier */
254 #define L2CAP_CID_SIGNALING 0x0001
255 #define L2CAP_CID_CONN_LESS 0x0002
256 #define L2CAP_CID_A2MP 0x0003
257 #define L2CAP_CID_ATT 0x0004
258 #define L2CAP_CID_LE_SIGNALING 0x0005
259 #define L2CAP_CID_SMP 0x0006
260 #define L2CAP_CID_SMP_BREDR 0x0007
261 #define L2CAP_CID_DYN_START 0x0040
262 #define L2CAP_CID_DYN_END 0xffff
263 #define L2CAP_CID_LE_DYN_END 0x007f
265 /* connect/create channel results */
266 #define L2CAP_CR_SUCCESS 0x0000
267 #define L2CAP_CR_PEND 0x0001
268 #define L2CAP_CR_BAD_PSM 0x0002
269 #define L2CAP_CR_SEC_BLOCK 0x0003
270 #define L2CAP_CR_NO_MEM 0x0004
271 #define L2CAP_CR_BAD_AMP 0x0005
272 #define L2CAP_CR_AUTHENTICATION 0x0005
273 #define L2CAP_CR_AUTHORIZATION 0x0006
274 #define L2CAP_CR_BAD_KEY_SIZE 0x0007
275 #define L2CAP_CR_ENCRYPTION 0x0008
277 /* connect/create channel status */
278 #define L2CAP_CS_NO_INFO 0x0000
279 #define L2CAP_CS_AUTHEN_PEND 0x0001
280 #define L2CAP_CS_AUTHOR_PEND 0x0002
282 struct l2cap_conf_req {
288 struct l2cap_conf_rsp {
295 #define L2CAP_CONF_SUCCESS 0x0000
296 #define L2CAP_CONF_UNACCEPT 0x0001
297 #define L2CAP_CONF_REJECT 0x0002
298 #define L2CAP_CONF_UNKNOWN 0x0003
299 #define L2CAP_CONF_PENDING 0x0004
300 #define L2CAP_CONF_EFS_REJECT 0x0005
302 /* configuration req/rsp continuation flag */
303 #define L2CAP_CONF_FLAG_CONTINUATION 0x0001
305 struct l2cap_conf_opt {
310 #define L2CAP_CONF_OPT_SIZE 2
312 #define L2CAP_CONF_HINT 0x80
313 #define L2CAP_CONF_MASK 0x7f
315 #define L2CAP_CONF_MTU 0x01
316 #define L2CAP_CONF_FLUSH_TO 0x02
317 #define L2CAP_CONF_QOS 0x03
318 #define L2CAP_CONF_RFC 0x04
319 #define L2CAP_CONF_FCS 0x05
320 #define L2CAP_CONF_EFS 0x06
321 #define L2CAP_CONF_EWS 0x07
323 #define L2CAP_CONF_MAX_SIZE 22
325 struct l2cap_conf_rfc {
329 __le16 retrans_timeout;
330 __le16 monitor_timeout;
334 #define L2CAP_MODE_BASIC 0x00
335 #define L2CAP_MODE_RETRANS 0x01
336 #define L2CAP_MODE_FLOWCTL 0x02
337 #define L2CAP_MODE_ERTM 0x03
338 #define L2CAP_MODE_STREAMING 0x04
340 /* Unlike the above this one doesn't actually map to anything that would
341 * ever be sent over the air. Therefore, use a value that's unlikely to
342 * ever be used in the BR/EDR configuration phase.
344 #define L2CAP_MODE_LE_FLOWCTL 0x80
346 struct l2cap_conf_efs {
355 #define L2CAP_SERV_NOTRAFIC 0x00
356 #define L2CAP_SERV_BESTEFFORT 0x01
357 #define L2CAP_SERV_GUARANTEED 0x02
359 #define L2CAP_BESTEFFORT_ID 0x01
361 struct l2cap_disconn_req {
366 struct l2cap_disconn_rsp {
371 struct l2cap_info_req {
375 struct l2cap_info_rsp {
381 struct l2cap_create_chan_req {
387 struct l2cap_create_chan_rsp {
394 struct l2cap_move_chan_req {
399 struct l2cap_move_chan_rsp {
404 #define L2CAP_MR_SUCCESS 0x0000
405 #define L2CAP_MR_PEND 0x0001
406 #define L2CAP_MR_BAD_ID 0x0002
407 #define L2CAP_MR_SAME_ID 0x0003
408 #define L2CAP_MR_NOT_SUPP 0x0004
409 #define L2CAP_MR_COLLISION 0x0005
410 #define L2CAP_MR_NOT_ALLOWED 0x0006
412 struct l2cap_move_chan_cfm {
417 #define L2CAP_MC_CONFIRMED 0x0000
418 #define L2CAP_MC_UNCONFIRMED 0x0001
420 struct l2cap_move_chan_cfm_rsp {
425 #define L2CAP_IT_CL_MTU 0x0001
426 #define L2CAP_IT_FEAT_MASK 0x0002
427 #define L2CAP_IT_FIXED_CHAN 0x0003
430 #define L2CAP_IR_SUCCESS 0x0000
431 #define L2CAP_IR_NOTSUPP 0x0001
433 struct l2cap_conn_param_update_req {
437 __le16 to_multiplier;
440 struct l2cap_conn_param_update_rsp {
444 /* Connection Parameters result */
445 #define L2CAP_CONN_PARAM_ACCEPTED 0x0000
446 #define L2CAP_CONN_PARAM_REJECTED 0x0001
448 #define L2CAP_LE_MAX_CREDITS 10
449 #define L2CAP_LE_DEFAULT_MPS 230
451 struct l2cap_le_conn_req {
459 struct l2cap_le_conn_rsp {
467 struct l2cap_le_credits {
472 /* ----- L2CAP channels and connections ----- */
473 struct l2cap_seq_list {
480 #define L2CAP_SEQ_LIST_CLEAR 0xFFFF
481 #define L2CAP_SEQ_LIST_TAIL 0x8000
484 struct l2cap_conn *conn;
485 struct hci_conn *hs_hcon;
486 struct hci_chan *hs_hchan;
523 __u16 retrans_timeout;
524 __u16 monitor_timeout;
533 unsigned long conf_state;
534 unsigned long conn_state;
544 __u16 expected_ack_seq;
545 __u16 expected_tx_seq;
547 __u16 srej_save_reqseq;
548 __u16 last_acked_seq;
550 __u16 unacked_frames;
554 struct sk_buff *sdu_last_frag;
563 __u32 local_sdu_itime;
565 __u32 local_flush_to;
570 __u32 remote_sdu_itime;
571 __u32 remote_acc_lat;
572 __u32 remote_flush_to;
574 struct delayed_work chan_timer;
575 struct delayed_work retrans_timer;
576 struct delayed_work monitor_timer;
577 struct delayed_work ack_timer;
579 struct sk_buff *tx_send_head;
580 struct sk_buff_head tx_q;
581 struct sk_buff_head srej_q;
582 struct l2cap_seq_list srej_list;
583 struct l2cap_seq_list retrans_list;
585 struct list_head list;
586 struct list_head global_l;
589 const struct l2cap_ops *ops;
596 struct l2cap_chan *(*new_connection) (struct l2cap_chan *chan);
597 int (*recv) (struct l2cap_chan * chan,
598 struct sk_buff *skb);
599 void (*teardown) (struct l2cap_chan *chan, int err);
600 void (*close) (struct l2cap_chan *chan);
601 void (*state_change) (struct l2cap_chan *chan,
603 void (*ready) (struct l2cap_chan *chan);
604 void (*defer) (struct l2cap_chan *chan);
605 void (*resume) (struct l2cap_chan *chan);
606 void (*suspend) (struct l2cap_chan *chan);
607 void (*set_shutdown) (struct l2cap_chan *chan);
608 long (*get_sndtimeo) (struct l2cap_chan *chan);
609 struct sk_buff *(*alloc_skb) (struct l2cap_chan *chan,
610 unsigned long hdr_len,
611 unsigned long len, int nb);
612 #ifdef CONFIG_TIZEN_WIP
613 int (*memcpy_fromiovec) (struct l2cap_chan *chan,
614 unsigned char *kdata,
621 struct hci_conn *hcon;
622 struct hci_chan *hchan;
627 __u8 remote_fixed_chan;
628 __u8 local_fixed_chan;
633 struct delayed_work info_timer;
635 struct sk_buff *rx_skb;
638 struct mutex ident_lock;
640 struct sk_buff_head pending_rx;
641 struct work_struct pending_rx_work;
643 struct work_struct id_addr_update_work;
647 struct l2cap_chan *smp;
649 struct list_head chan_l;
650 struct mutex chan_lock;
652 struct list_head users;
656 struct list_head list;
657 int (*probe) (struct l2cap_conn *conn, struct l2cap_user *user);
658 void (*remove) (struct l2cap_conn *conn, struct l2cap_user *user);
661 #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01
662 #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04
663 #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08
665 #define L2CAP_CHAN_RAW 1
666 #define L2CAP_CHAN_CONN_LESS 2
667 #define L2CAP_CHAN_CONN_ORIENTED 3
668 #define L2CAP_CHAN_FIXED 4
670 /* ----- L2CAP socket info ----- */
671 #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
675 struct l2cap_chan *chan;
676 struct sk_buff *rx_busy_skb;
694 #define L2CAP_CONF_MAX_CONF_REQ 2
695 #define L2CAP_CONF_MAX_CONF_RSP 2
709 /* Definitions for flags in l2cap_chan */
718 FLAG_LE_CONN_REQ_SENT,
719 FLAG_PENDING_SECURITY,
723 /* Lock nesting levels for L2CAP channels. We need these because lockdep
724 * otherwise considers all channels equal and will e.g. complain about a
725 * connection oriented channel triggering SMP procedures or a listening
726 * channel creating and locking a child channel.
730 L2CAP_NESTING_NORMAL,
731 L2CAP_NESTING_PARENT,
736 L2CAP_TX_STATE_WAIT_F,
741 L2CAP_RX_STATE_SREJ_SENT,
743 L2CAP_RX_STATE_WAIT_P,
744 L2CAP_RX_STATE_WAIT_F,
748 L2CAP_TXSEQ_EXPECTED,
749 L2CAP_TXSEQ_EXPECTED_SREJ,
750 L2CAP_TXSEQ_UNEXPECTED,
751 L2CAP_TXSEQ_UNEXPECTED_SREJ,
752 L2CAP_TXSEQ_DUPLICATE,
753 L2CAP_TXSEQ_DUPLICATE_SREJ,
755 L2CAP_TXSEQ_INVALID_IGNORE,
759 L2CAP_EV_DATA_REQUEST,
760 L2CAP_EV_LOCAL_BUSY_DETECTED,
761 L2CAP_EV_LOCAL_BUSY_CLEAR,
762 L2CAP_EV_RECV_REQSEQ_AND_FBIT,
766 L2CAP_EV_EXPLICIT_POLL,
767 L2CAP_EV_RECV_IFRAME,
776 L2CAP_MOVE_ROLE_NONE,
777 L2CAP_MOVE_ROLE_INITIATOR,
778 L2CAP_MOVE_ROLE_RESPONDER,
785 L2CAP_MOVE_WAIT_RSP_SUCCESS,
786 L2CAP_MOVE_WAIT_CONFIRM,
787 L2CAP_MOVE_WAIT_CONFIRM_RSP,
788 L2CAP_MOVE_WAIT_LOGICAL_COMP,
789 L2CAP_MOVE_WAIT_LOGICAL_CFM,
790 L2CAP_MOVE_WAIT_LOCAL_BUSY,
791 L2CAP_MOVE_WAIT_PREPARE,
794 void l2cap_chan_hold(struct l2cap_chan *c);
795 void l2cap_chan_put(struct l2cap_chan *c);
797 static inline void l2cap_chan_lock(struct l2cap_chan *chan)
799 mutex_lock_nested(&chan->lock, atomic_read(&chan->nesting));
802 static inline void l2cap_chan_unlock(struct l2cap_chan *chan)
804 mutex_unlock(&chan->lock);
807 static inline void l2cap_set_timer(struct l2cap_chan *chan,
808 struct delayed_work *work, long timeout)
810 BT_DBG("chan %p state %s timeout %ld", chan,
811 state_to_string(chan->state), timeout);
813 /* If delayed work cancelled do not hold(chan)
814 since it is already done with previous set_timer */
815 if (!cancel_delayed_work(work))
816 l2cap_chan_hold(chan);
818 schedule_delayed_work(work, timeout);
821 static inline bool l2cap_clear_timer(struct l2cap_chan *chan,
822 struct delayed_work *work)
826 /* put(chan) if delayed work cancelled otherwise it
827 is done in delayed work function */
828 ret = cancel_delayed_work(work);
830 l2cap_chan_put(chan);
835 #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t))
836 #define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer)
837 #define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer)
838 #define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer)
839 #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \
840 msecs_to_jiffies(L2CAP_DEFAULT_ACK_TO));
841 #define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer)
843 static inline int __seq_offset(struct l2cap_chan *chan, __u16 seq1, __u16 seq2)
848 return chan->tx_win_max + 1 - seq2 + seq1;
851 static inline __u16 __next_seq(struct l2cap_chan *chan, __u16 seq)
853 return (seq + 1) % (chan->tx_win_max + 1);
856 static inline struct l2cap_chan *l2cap_chan_no_new_connection(struct l2cap_chan *chan)
861 static inline int l2cap_chan_no_recv(struct l2cap_chan *chan, struct sk_buff *skb)
866 static inline struct sk_buff *l2cap_chan_no_alloc_skb(struct l2cap_chan *chan,
867 unsigned long hdr_len,
868 unsigned long len, int nb)
870 return ERR_PTR(-ENOSYS);
873 static inline void l2cap_chan_no_teardown(struct l2cap_chan *chan, int err)
877 static inline void l2cap_chan_no_close(struct l2cap_chan *chan)
881 static inline void l2cap_chan_no_ready(struct l2cap_chan *chan)
885 static inline void l2cap_chan_no_state_change(struct l2cap_chan *chan,
890 static inline void l2cap_chan_no_defer(struct l2cap_chan *chan)
894 static inline void l2cap_chan_no_suspend(struct l2cap_chan *chan)
898 static inline void l2cap_chan_no_resume(struct l2cap_chan *chan)
902 static inline void l2cap_chan_no_set_shutdown(struct l2cap_chan *chan)
906 static inline long l2cap_chan_no_get_sndtimeo(struct l2cap_chan *chan)
911 #ifdef CONFIG_TIZEN_WIP
912 static inline int l2cap_chan_no_memcpy_fromiovec(struct l2cap_chan *chan,
913 unsigned char *kdata,
917 /* Following is safe since for compiler definitions of kvec and
918 * iovec are identical, yielding the same in-core layout and alignment
920 struct kvec *vec = (struct kvec *)iov;
924 int copy = min_t(unsigned int, len, vec->iov_len);
925 memcpy(kdata, vec->iov_base, copy);
928 vec->iov_base += copy;
929 vec->iov_len -= copy;
937 extern bool disable_ertm;
939 int l2cap_init_sockets(void);
940 void l2cap_cleanup_sockets(void);
941 bool l2cap_is_socket(struct socket *sock);
943 void __l2cap_le_connect_rsp_defer(struct l2cap_chan *chan);
944 void __l2cap_connect_rsp_defer(struct l2cap_chan *chan);
946 int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm);
947 int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid);
949 struct l2cap_chan *l2cap_chan_create(void);
950 void l2cap_chan_close(struct l2cap_chan *chan, int reason);
951 int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
952 bdaddr_t *dst, u8 dst_type);
953 int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len);
954 void l2cap_chan_busy(struct l2cap_chan *chan, int busy);
955 int l2cap_chan_check_security(struct l2cap_chan *chan, bool initiator);
956 void l2cap_chan_set_defaults(struct l2cap_chan *chan);
957 int l2cap_ertm_init(struct l2cap_chan *chan);
958 void l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan);
959 void __l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *chan);
960 void l2cap_chan_del(struct l2cap_chan *chan, int err);
961 void l2cap_send_conn_req(struct l2cap_chan *chan);
962 void l2cap_move_start(struct l2cap_chan *chan);
963 void l2cap_logical_cfm(struct l2cap_chan *chan, struct hci_chan *hchan,
965 void __l2cap_physical_cfm(struct l2cap_chan *chan, int result);
967 struct l2cap_conn *l2cap_conn_get(struct l2cap_conn *conn);
968 void l2cap_conn_put(struct l2cap_conn *conn);
970 int l2cap_register_user(struct l2cap_conn *conn, struct l2cap_user *user);
971 void l2cap_unregister_user(struct l2cap_conn *conn, struct l2cap_user *user);
973 #endif /* __L2CAP_H */