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_DEFAULT_TX_WINDOW 63
37 #define L2CAP_DEFAULT_EXT_WINDOW 0x3FFF
38 #define L2CAP_DEFAULT_MAX_TX 3
39 #define L2CAP_DEFAULT_RETRANS_TO 2000 /* 2 seconds */
40 #define L2CAP_DEFAULT_MONITOR_TO 12000 /* 12 seconds */
41 #define L2CAP_DEFAULT_MAX_PDU_SIZE 1009 /* Sized for 3-DH5 packet */
42 #define L2CAP_DEFAULT_ACK_TO 200
43 #define L2CAP_LE_DEFAULT_MTU 23
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 */
49 #define L2CAP_DISC_TIMEOUT msecs_to_jiffies(100)
50 #define L2CAP_DISC_REJ_TIMEOUT msecs_to_jiffies(5000)
51 #define L2CAP_ENC_TIMEOUT msecs_to_jiffies(5000)
52 #define L2CAP_CONN_TIMEOUT msecs_to_jiffies(40000)
53 #define L2CAP_INFO_TIMEOUT msecs_to_jiffies(4000)
55 /* L2CAP socket address */
57 sa_family_t l2_family;
64 /* L2CAP socket options */
65 #define L2CAP_OPTIONS 0x01
66 struct l2cap_options {
76 #define L2CAP_CONNINFO 0x02
77 struct l2cap_conninfo {
83 #define L2CAP_LM_MASTER 0x0001
84 #define L2CAP_LM_AUTH 0x0002
85 #define L2CAP_LM_ENCRYPT 0x0004
86 #define L2CAP_LM_TRUSTED 0x0008
87 #define L2CAP_LM_RELIABLE 0x0010
88 #define L2CAP_LM_SECURE 0x0020
90 /* L2CAP command codes */
91 #define L2CAP_COMMAND_REJ 0x01
92 #define L2CAP_CONN_REQ 0x02
93 #define L2CAP_CONN_RSP 0x03
94 #define L2CAP_CONF_REQ 0x04
95 #define L2CAP_CONF_RSP 0x05
96 #define L2CAP_DISCONN_REQ 0x06
97 #define L2CAP_DISCONN_RSP 0x07
98 #define L2CAP_ECHO_REQ 0x08
99 #define L2CAP_ECHO_RSP 0x09
100 #define L2CAP_INFO_REQ 0x0a
101 #define L2CAP_INFO_RSP 0x0b
102 #define L2CAP_CREATE_CHAN_REQ 0x0c
103 #define L2CAP_CREATE_CHAN_RSP 0x0d
104 #define L2CAP_MOVE_CHAN_REQ 0x0e
105 #define L2CAP_MOVE_CHAN_RSP 0x0f
106 #define L2CAP_MOVE_CHAN_CFM 0x10
107 #define L2CAP_MOVE_CHAN_CFM_RSP 0x11
108 #define L2CAP_CONN_PARAM_UPDATE_REQ 0x12
109 #define L2CAP_CONN_PARAM_UPDATE_RSP 0x13
111 /* L2CAP extended feature mask */
112 #define L2CAP_FEAT_FLOWCTL 0x00000001
113 #define L2CAP_FEAT_RETRANS 0x00000002
114 #define L2CAP_FEAT_BIDIR_QOS 0x00000004
115 #define L2CAP_FEAT_ERTM 0x00000008
116 #define L2CAP_FEAT_STREAMING 0x00000010
117 #define L2CAP_FEAT_FCS 0x00000020
118 #define L2CAP_FEAT_EXT_FLOW 0x00000040
119 #define L2CAP_FEAT_FIXED_CHAN 0x00000080
120 #define L2CAP_FEAT_EXT_WINDOW 0x00000100
121 #define L2CAP_FEAT_UCD 0x00000200
123 /* L2CAP checksum option */
124 #define L2CAP_FCS_NONE 0x00
125 #define L2CAP_FCS_CRC16 0x01
127 /* L2CAP fixed channels */
128 #define L2CAP_FC_L2CAP 0x02
129 #define L2CAP_FC_A2MP 0x08
131 /* L2CAP Control Field bit masks */
132 #define L2CAP_CTRL_SAR 0xC000
133 #define L2CAP_CTRL_REQSEQ 0x3F00
134 #define L2CAP_CTRL_TXSEQ 0x007E
135 #define L2CAP_CTRL_SUPERVISE 0x000C
137 #define L2CAP_CTRL_RETRANS 0x0080
138 #define L2CAP_CTRL_FINAL 0x0080
139 #define L2CAP_CTRL_POLL 0x0010
140 #define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */
142 #define L2CAP_CTRL_TXSEQ_SHIFT 1
143 #define L2CAP_CTRL_SUPER_SHIFT 2
144 #define L2CAP_CTRL_POLL_SHIFT 4
145 #define L2CAP_CTRL_FINAL_SHIFT 7
146 #define L2CAP_CTRL_REQSEQ_SHIFT 8
147 #define L2CAP_CTRL_SAR_SHIFT 14
149 /* L2CAP Extended Control Field bit mask */
150 #define L2CAP_EXT_CTRL_TXSEQ 0xFFFC0000
151 #define L2CAP_EXT_CTRL_SAR 0x00030000
152 #define L2CAP_EXT_CTRL_SUPERVISE 0x00030000
153 #define L2CAP_EXT_CTRL_REQSEQ 0x0000FFFC
155 #define L2CAP_EXT_CTRL_POLL 0x00040000
156 #define L2CAP_EXT_CTRL_FINAL 0x00000002
157 #define L2CAP_EXT_CTRL_FRAME_TYPE 0x00000001 /* I- or S-Frame */
159 #define L2CAP_EXT_CTRL_FINAL_SHIFT 1
160 #define L2CAP_EXT_CTRL_REQSEQ_SHIFT 2
161 #define L2CAP_EXT_CTRL_SAR_SHIFT 16
162 #define L2CAP_EXT_CTRL_SUPER_SHIFT 16
163 #define L2CAP_EXT_CTRL_POLL_SHIFT 18
164 #define L2CAP_EXT_CTRL_TXSEQ_SHIFT 18
166 /* L2CAP Supervisory Function */
167 #define L2CAP_SUPER_RR 0x00
168 #define L2CAP_SUPER_REJ 0x01
169 #define L2CAP_SUPER_RNR 0x02
170 #define L2CAP_SUPER_SREJ 0x03
172 /* L2CAP Segmentation and Reassembly */
173 #define L2CAP_SAR_UNSEGMENTED 0x00
174 #define L2CAP_SAR_START 0x01
175 #define L2CAP_SAR_END 0x02
176 #define L2CAP_SAR_CONTINUE 0x03
178 /* L2CAP Command rej. reasons */
179 #define L2CAP_REJ_NOT_UNDERSTOOD 0x0000
180 #define L2CAP_REJ_MTU_EXCEEDED 0x0001
181 #define L2CAP_REJ_INVALID_CID 0x0002
183 /* L2CAP structures */
188 #define L2CAP_HDR_SIZE 4
189 #define L2CAP_ENH_HDR_SIZE 6
190 #define L2CAP_EXT_HDR_SIZE 8
192 #define L2CAP_FCS_SIZE 2
193 #define L2CAP_SDULEN_SIZE 2
194 #define L2CAP_PSMLEN_SIZE 2
195 #define L2CAP_ENH_CTRL_SIZE 2
196 #define L2CAP_EXT_CTRL_SIZE 4
198 struct l2cap_cmd_hdr {
203 #define L2CAP_CMD_HDR_SIZE 4
205 struct l2cap_cmd_rej_unk {
209 struct l2cap_cmd_rej_mtu {
214 struct l2cap_cmd_rej_cid {
220 struct l2cap_conn_req {
225 struct l2cap_conn_rsp {
232 /* channel indentifier */
233 #define L2CAP_CID_SIGNALING 0x0001
234 #define L2CAP_CID_CONN_LESS 0x0002
235 #define L2CAP_CID_LE_DATA 0x0004
236 #define L2CAP_CID_LE_SIGNALING 0x0005
237 #define L2CAP_CID_SMP 0x0006
238 #define L2CAP_CID_DYN_START 0x0040
239 #define L2CAP_CID_DYN_END 0xffff
241 /* connect/create channel results */
242 #define L2CAP_CR_SUCCESS 0x0000
243 #define L2CAP_CR_PEND 0x0001
244 #define L2CAP_CR_BAD_PSM 0x0002
245 #define L2CAP_CR_SEC_BLOCK 0x0003
246 #define L2CAP_CR_NO_MEM 0x0004
247 #define L2CAP_CR_BAD_AMP 0x0005
249 /* connect/create channel status */
250 #define L2CAP_CS_NO_INFO 0x0000
251 #define L2CAP_CS_AUTHEN_PEND 0x0001
252 #define L2CAP_CS_AUTHOR_PEND 0x0002
254 struct l2cap_conf_req {
260 struct l2cap_conf_rsp {
267 #define L2CAP_CONF_SUCCESS 0x0000
268 #define L2CAP_CONF_UNACCEPT 0x0001
269 #define L2CAP_CONF_REJECT 0x0002
270 #define L2CAP_CONF_UNKNOWN 0x0003
271 #define L2CAP_CONF_PENDING 0x0004
272 #define L2CAP_CONF_EFS_REJECT 0x0005
274 struct l2cap_conf_opt {
279 #define L2CAP_CONF_OPT_SIZE 2
281 #define L2CAP_CONF_HINT 0x80
282 #define L2CAP_CONF_MASK 0x7f
284 #define L2CAP_CONF_MTU 0x01
285 #define L2CAP_CONF_FLUSH_TO 0x02
286 #define L2CAP_CONF_QOS 0x03
287 #define L2CAP_CONF_RFC 0x04
288 #define L2CAP_CONF_FCS 0x05
289 #define L2CAP_CONF_EFS 0x06
290 #define L2CAP_CONF_EWS 0x07
292 #define L2CAP_CONF_MAX_SIZE 22
294 struct l2cap_conf_rfc {
298 __le16 retrans_timeout;
299 __le16 monitor_timeout;
303 #define L2CAP_MODE_BASIC 0x00
304 #define L2CAP_MODE_RETRANS 0x01
305 #define L2CAP_MODE_FLOWCTL 0x02
306 #define L2CAP_MODE_ERTM 0x03
307 #define L2CAP_MODE_STREAMING 0x04
309 struct l2cap_conf_efs {
318 #define L2CAP_SERV_NOTRAFIC 0x00
319 #define L2CAP_SERV_BESTEFFORT 0x01
320 #define L2CAP_SERV_GUARANTEED 0x02
322 #define L2CAP_BESTEFFORT_ID 0x01
324 struct l2cap_disconn_req {
329 struct l2cap_disconn_rsp {
334 struct l2cap_info_req {
338 struct l2cap_info_rsp {
344 struct l2cap_create_chan_req {
350 struct l2cap_create_chan_rsp {
357 struct l2cap_move_chan_req {
362 struct l2cap_move_chan_rsp {
367 #define L2CAP_MR_SUCCESS 0x0000
368 #define L2CAP_MR_PEND 0x0001
369 #define L2CAP_MR_BAD_ID 0x0002
370 #define L2CAP_MR_SAME_ID 0x0003
371 #define L2CAP_MR_NOT_SUPP 0x0004
372 #define L2CAP_MR_COLLISION 0x0005
373 #define L2CAP_MR_NOT_ALLOWED 0x0006
375 struct l2cap_move_chan_cfm {
380 #define L2CAP_MC_CONFIRMED 0x0000
381 #define L2CAP_MC_UNCONFIRMED 0x0001
383 struct l2cap_move_chan_cfm_rsp {
388 #define L2CAP_IT_CL_MTU 0x0001
389 #define L2CAP_IT_FEAT_MASK 0x0002
390 #define L2CAP_IT_FIXED_CHAN 0x0003
393 #define L2CAP_IR_SUCCESS 0x0000
394 #define L2CAP_IR_NOTSUPP 0x0001
396 struct l2cap_conn_param_update_req {
400 __le16 to_multiplier;
403 struct l2cap_conn_param_update_rsp {
407 /* Connection Parameters result */
408 #define L2CAP_CONN_PARAM_ACCEPTED 0x0000
409 #define L2CAP_CONN_PARAM_REJECTED 0x0001
411 /* ----- L2CAP channels and connections ----- */
412 struct l2cap_seq_list {
419 #define L2CAP_SEQ_LIST_CLEAR 0xFFFF
420 #define L2CAP_SEQ_LIST_TAIL 0x8000
424 struct list_head list;
430 struct l2cap_conn *conn;
463 __u16 retrans_timeout;
464 __u16 monitor_timeout;
470 unsigned long conf_state;
471 unsigned long conn_state;
475 __u16 expected_ack_seq;
476 __u16 expected_tx_seq;
478 __u16 buffer_seq_srej;
479 __u16 srej_save_reqseq;
480 __u16 last_acked_seq;
482 __u16 unacked_frames;
484 __u16 srej_queue_next;
488 struct sk_buff *sdu_last_frag;
497 __u32 local_sdu_itime;
499 __u32 local_flush_to;
504 __u32 remote_sdu_itime;
505 __u32 remote_acc_lat;
506 __u32 remote_flush_to;
508 struct delayed_work chan_timer;
509 struct delayed_work retrans_timer;
510 struct delayed_work monitor_timer;
511 struct delayed_work ack_timer;
513 struct sk_buff *tx_send_head;
514 struct sk_buff_head tx_q;
515 struct sk_buff_head srej_q;
516 struct l2cap_seq_list srej_list;
517 struct l2cap_seq_list retrans_list;
518 struct list_head srej_l;
520 struct list_head list;
521 struct list_head global_l;
524 struct l2cap_ops *ops;
531 struct l2cap_chan *(*new_connection) (void *data);
532 int (*recv) (void *data, struct sk_buff *skb);
533 void (*close) (void *data);
534 void (*state_change) (void *data, int state);
535 struct sk_buff *(*alloc_skb) (struct l2cap_chan *chan,
536 unsigned long len, int nb);
540 struct hci_conn *hcon;
541 struct hci_chan *hchan;
549 __u8 fixed_chan_mask;
554 struct delayed_work info_timer;
558 struct sk_buff *rx_skb;
564 struct delayed_work security_timer;
565 struct smp_chan *smp_chan;
567 struct list_head chan_l;
568 struct mutex chan_lock;
571 #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01
572 #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04
573 #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08
575 #define L2CAP_CHAN_RAW 1
576 #define L2CAP_CHAN_CONN_LESS 2
577 #define L2CAP_CHAN_CONN_ORIENTED 3
579 /* ----- L2CAP socket info ----- */
580 #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk)
584 struct l2cap_chan *chan;
585 struct sk_buff *rx_busy_skb;
602 #define L2CAP_CONF_MAX_CONF_REQ 2
603 #define L2CAP_CONF_MAX_CONF_RSP 2
617 /* Definitions for flags in l2cap_chan */
629 L2CAP_TX_STATE_WAIT_F,
634 L2CAP_RX_STATE_SREJ_SENT,
638 L2CAP_TXSEQ_EXPECTED,
639 L2CAP_TXSEQ_EXPECTED_SREJ,
640 L2CAP_TXSEQ_UNEXPECTED,
641 L2CAP_TXSEQ_UNEXPECTED_SREJ,
642 L2CAP_TXSEQ_DUPLICATE,
643 L2CAP_TXSEQ_DUPLICATE_SREJ,
645 L2CAP_TXSEQ_INVALID_IGNORE,
649 L2CAP_EV_DATA_REQUEST,
650 L2CAP_EV_LOCAL_BUSY_DETECTED,
651 L2CAP_EV_LOCAL_BUSY_CLEAR,
652 L2CAP_EV_RECV_REQSEQ_AND_FBIT,
656 L2CAP_EV_EXPLICIT_POLL,
657 L2CAP_EV_RECV_IFRAME,
665 static inline void l2cap_chan_hold(struct l2cap_chan *c)
667 atomic_inc(&c->refcnt);
670 static inline void l2cap_chan_put(struct l2cap_chan *c)
672 if (atomic_dec_and_test(&c->refcnt))
676 static inline void l2cap_chan_lock(struct l2cap_chan *chan)
678 mutex_lock(&chan->lock);
681 static inline void l2cap_chan_unlock(struct l2cap_chan *chan)
683 mutex_unlock(&chan->lock);
686 static inline void l2cap_set_timer(struct l2cap_chan *chan,
687 struct delayed_work *work, long timeout)
689 BT_DBG("chan %p state %s timeout %ld", chan,
690 state_to_string(chan->state), timeout);
692 /* If delayed work cancelled do not hold(chan)
693 since it is already done with previous set_timer */
694 if (!cancel_delayed_work(work))
695 l2cap_chan_hold(chan);
697 schedule_delayed_work(work, timeout);
700 static inline bool l2cap_clear_timer(struct l2cap_chan *chan,
701 struct delayed_work *work)
705 /* put(chan) if delayed work cancelled otherwise it
706 is done in delayed work function */
707 ret = cancel_delayed_work(work);
709 l2cap_chan_put(chan);
714 #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t))
715 #define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer)
716 #define __set_retrans_timer(c) l2cap_set_timer(c, &c->retrans_timer, \
717 msecs_to_jiffies(L2CAP_DEFAULT_RETRANS_TO));
718 #define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer)
719 #define __set_monitor_timer(c) l2cap_set_timer(c, &c->monitor_timer, \
720 msecs_to_jiffies(L2CAP_DEFAULT_MONITOR_TO));
721 #define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer)
722 #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \
723 msecs_to_jiffies(L2CAP_DEFAULT_ACK_TO));
724 #define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer)
726 static inline int __seq_offset(struct l2cap_chan *chan, __u16 seq1, __u16 seq2)
731 return chan->tx_win_max + 1 - seq2 + seq1;
734 static inline __u16 __next_seq(struct l2cap_chan *chan, __u16 seq)
736 return (seq + 1) % (chan->tx_win_max + 1);
739 static inline int l2cap_tx_window_full(struct l2cap_chan *ch)
743 sub = (ch->next_tx_seq - ch->expected_ack_seq) % 64;
748 return sub == ch->remote_tx_win;
751 static inline __u16 __get_reqseq(struct l2cap_chan *chan, __u32 ctrl)
753 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
754 return (ctrl & L2CAP_EXT_CTRL_REQSEQ) >>
755 L2CAP_EXT_CTRL_REQSEQ_SHIFT;
757 return (ctrl & L2CAP_CTRL_REQSEQ) >> L2CAP_CTRL_REQSEQ_SHIFT;
760 static inline __u32 __set_reqseq(struct l2cap_chan *chan, __u32 reqseq)
762 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
763 return (reqseq << L2CAP_EXT_CTRL_REQSEQ_SHIFT) &
764 L2CAP_EXT_CTRL_REQSEQ;
766 return (reqseq << L2CAP_CTRL_REQSEQ_SHIFT) & L2CAP_CTRL_REQSEQ;
769 static inline __u16 __get_txseq(struct l2cap_chan *chan, __u32 ctrl)
771 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
772 return (ctrl & L2CAP_EXT_CTRL_TXSEQ) >>
773 L2CAP_EXT_CTRL_TXSEQ_SHIFT;
775 return (ctrl & L2CAP_CTRL_TXSEQ) >> L2CAP_CTRL_TXSEQ_SHIFT;
778 static inline __u32 __set_txseq(struct l2cap_chan *chan, __u32 txseq)
780 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
781 return (txseq << L2CAP_EXT_CTRL_TXSEQ_SHIFT) &
782 L2CAP_EXT_CTRL_TXSEQ;
784 return (txseq << L2CAP_CTRL_TXSEQ_SHIFT) & L2CAP_CTRL_TXSEQ;
787 static inline bool __is_sframe(struct l2cap_chan *chan, __u32 ctrl)
789 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
790 return ctrl & L2CAP_EXT_CTRL_FRAME_TYPE;
792 return ctrl & L2CAP_CTRL_FRAME_TYPE;
795 static inline __u32 __set_sframe(struct l2cap_chan *chan)
797 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
798 return L2CAP_EXT_CTRL_FRAME_TYPE;
800 return L2CAP_CTRL_FRAME_TYPE;
803 static inline __u8 __get_ctrl_sar(struct l2cap_chan *chan, __u32 ctrl)
805 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
806 return (ctrl & L2CAP_EXT_CTRL_SAR) >> L2CAP_EXT_CTRL_SAR_SHIFT;
808 return (ctrl & L2CAP_CTRL_SAR) >> L2CAP_CTRL_SAR_SHIFT;
811 static inline __u32 __set_ctrl_sar(struct l2cap_chan *chan, __u32 sar)
813 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
814 return (sar << L2CAP_EXT_CTRL_SAR_SHIFT) & L2CAP_EXT_CTRL_SAR;
816 return (sar << L2CAP_CTRL_SAR_SHIFT) & L2CAP_CTRL_SAR;
819 static inline bool __is_sar_start(struct l2cap_chan *chan, __u32 ctrl)
821 return __get_ctrl_sar(chan, ctrl) == L2CAP_SAR_START;
824 static inline __u32 __get_sar_mask(struct l2cap_chan *chan)
826 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
827 return L2CAP_EXT_CTRL_SAR;
829 return L2CAP_CTRL_SAR;
832 static inline __u8 __get_ctrl_super(struct l2cap_chan *chan, __u32 ctrl)
834 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
835 return (ctrl & L2CAP_EXT_CTRL_SUPERVISE) >>
836 L2CAP_EXT_CTRL_SUPER_SHIFT;
838 return (ctrl & L2CAP_CTRL_SUPERVISE) >> L2CAP_CTRL_SUPER_SHIFT;
841 static inline __u32 __set_ctrl_super(struct l2cap_chan *chan, __u32 super)
843 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
844 return (super << L2CAP_EXT_CTRL_SUPER_SHIFT) &
845 L2CAP_EXT_CTRL_SUPERVISE;
847 return (super << L2CAP_CTRL_SUPER_SHIFT) &
848 L2CAP_CTRL_SUPERVISE;
851 static inline __u32 __set_ctrl_final(struct l2cap_chan *chan)
853 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
854 return L2CAP_EXT_CTRL_FINAL;
856 return L2CAP_CTRL_FINAL;
859 static inline bool __is_ctrl_final(struct l2cap_chan *chan, __u32 ctrl)
861 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
862 return ctrl & L2CAP_EXT_CTRL_FINAL;
864 return ctrl & L2CAP_CTRL_FINAL;
867 static inline __u32 __set_ctrl_poll(struct l2cap_chan *chan)
869 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
870 return L2CAP_EXT_CTRL_POLL;
872 return L2CAP_CTRL_POLL;
875 static inline bool __is_ctrl_poll(struct l2cap_chan *chan, __u32 ctrl)
877 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
878 return ctrl & L2CAP_EXT_CTRL_POLL;
880 return ctrl & L2CAP_CTRL_POLL;
883 static inline __u32 __get_control(struct l2cap_chan *chan, void *p)
885 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
886 return get_unaligned_le32(p);
888 return get_unaligned_le16(p);
891 static inline void __put_control(struct l2cap_chan *chan, __u32 control,
894 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
895 return put_unaligned_le32(control, p);
897 return put_unaligned_le16(control, p);
900 static inline __u8 __ctrl_size(struct l2cap_chan *chan)
902 if (test_bit(FLAG_EXT_CTRL, &chan->flags))
903 return L2CAP_EXT_HDR_SIZE - L2CAP_HDR_SIZE;
905 return L2CAP_ENH_HDR_SIZE - L2CAP_HDR_SIZE;
908 extern bool disable_ertm;
910 int l2cap_init_sockets(void);
911 void l2cap_cleanup_sockets(void);
913 void __l2cap_connect_rsp_defer(struct l2cap_chan *chan);
914 int __l2cap_wait_ack(struct sock *sk);
916 int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm);
917 int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid);
919 struct l2cap_chan *l2cap_chan_create(void);
920 void l2cap_chan_close(struct l2cap_chan *chan, int reason);
921 void l2cap_chan_destroy(struct l2cap_chan *chan);
922 int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
923 bdaddr_t *dst, u8 dst_type);
924 int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len,
926 void l2cap_chan_busy(struct l2cap_chan *chan, int busy);
927 int l2cap_chan_check_security(struct l2cap_chan *chan);
928 void l2cap_chan_set_defaults(struct l2cap_chan *chan);
930 #endif /* __L2CAP_H */