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Commit | Line | Data |
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be21871f | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
ce5706bd | 4 | Copyright (C) 2009-2010 Gustavo F. Padovan <gustavo@padovan.org> |
5d8868ff | 5 | Copyright (C) 2010 Google Inc. |
1da177e4 LT |
6 | |
7 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
8 | ||
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; | |
12 | ||
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 | |
be21871f AE |
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 | |
1da177e4 LT |
20 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
21 | ||
be21871f AE |
22 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
23 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
24 | SOFTWARE IS DISCLAIMED. |
25 | */ | |
26 | ||
27 | #ifndef __L2CAP_H | |
28 | #define __L2CAP_H | |
29 | ||
30 | /* L2CAP defaults */ | |
47ec1dcd | 31 | #define L2CAP_DEFAULT_MTU 672 |
f2fcfcd6 | 32 | #define L2CAP_DEFAULT_MIN_MTU 48 |
47ec1dcd | 33 | #define L2CAP_DEFAULT_FLUSH_TO 0xffff |
1c2acffb | 34 | #define L2CAP_DEFAULT_TX_WINDOW 63 |
e90bac06 | 35 | #define L2CAP_DEFAULT_MAX_TX 3 |
fa235562 | 36 | #define L2CAP_DEFAULT_RETRANS_TO 2000 /* 2 seconds */ |
e90bac06 | 37 | #define L2CAP_DEFAULT_MONITOR_TO 12000 /* 12 seconds */ |
db12d647 | 38 | #define L2CAP_DEFAULT_MAX_PDU_SIZE 1009 /* Sized for 3-DH5 packet */ |
c1b4f43b | 39 | #define L2CAP_DEFAULT_ACK_TO 200 |
b62f328b | 40 | #define L2CAP_LE_DEFAULT_MTU 23 |
1da177e4 | 41 | |
4e8402a3 MH |
42 | #define L2CAP_CONN_TIMEOUT (40000) /* 40 seconds */ |
43 | #define L2CAP_INFO_TIMEOUT (4000) /* 4 seconds */ | |
1da177e4 LT |
44 | |
45 | /* L2CAP socket address */ | |
46 | struct sockaddr_l2 { | |
47 | sa_family_t l2_family; | |
8e036fc3 | 48 | __le16 l2_psm; |
1da177e4 | 49 | bdaddr_t l2_bdaddr; |
f29972de | 50 | __le16 l2_cid; |
1da177e4 LT |
51 | }; |
52 | ||
53 | /* L2CAP socket options */ | |
54 | #define L2CAP_OPTIONS 0x01 | |
55 | struct l2cap_options { | |
56 | __u16 omtu; | |
57 | __u16 imtu; | |
58 | __u16 flush_to; | |
59 | __u8 mode; | |
fcc203c3 | 60 | __u8 fcs; |
68d7f0ce | 61 | __u8 max_tx; |
14b5aa71 | 62 | __u16 txwin_size; |
1da177e4 LT |
63 | }; |
64 | ||
65 | #define L2CAP_CONNINFO 0x02 | |
66 | struct l2cap_conninfo { | |
67 | __u16 hci_handle; | |
68 | __u8 dev_class[3]; | |
69 | }; | |
70 | ||
71 | #define L2CAP_LM 0x03 | |
72 | #define L2CAP_LM_MASTER 0x0001 | |
73 | #define L2CAP_LM_AUTH 0x0002 | |
74 | #define L2CAP_LM_ENCRYPT 0x0004 | |
75 | #define L2CAP_LM_TRUSTED 0x0008 | |
76 | #define L2CAP_LM_RELIABLE 0x0010 | |
77 | #define L2CAP_LM_SECURE 0x0020 | |
78 | ||
79 | /* L2CAP command codes */ | |
47ec1dcd MH |
80 | #define L2CAP_COMMAND_REJ 0x01 |
81 | #define L2CAP_CONN_REQ 0x02 | |
82 | #define L2CAP_CONN_RSP 0x03 | |
83 | #define L2CAP_CONF_REQ 0x04 | |
84 | #define L2CAP_CONF_RSP 0x05 | |
85 | #define L2CAP_DISCONN_REQ 0x06 | |
86 | #define L2CAP_DISCONN_RSP 0x07 | |
87 | #define L2CAP_ECHO_REQ 0x08 | |
88 | #define L2CAP_ECHO_RSP 0x09 | |
89 | #define L2CAP_INFO_REQ 0x0a | |
90 | #define L2CAP_INFO_RSP 0x0b | |
3300d9a9 CT |
91 | #define L2CAP_CONN_PARAM_UPDATE_REQ 0x12 |
92 | #define L2CAP_CONN_PARAM_UPDATE_RSP 0x13 | |
47ec1dcd MH |
93 | |
94 | /* L2CAP feature mask */ | |
95 | #define L2CAP_FEAT_FLOWCTL 0x00000001 | |
96 | #define L2CAP_FEAT_RETRANS 0x00000002 | |
97 | #define L2CAP_FEAT_ERTM 0x00000008 | |
98 | #define L2CAP_FEAT_STREAMING 0x00000010 | |
99 | #define L2CAP_FEAT_FCS 0x00000020 | |
100 | #define L2CAP_FEAT_FIXED_CHAN 0x00000080 | |
101 | ||
102 | /* L2CAP checksum option */ | |
103 | #define L2CAP_FCS_NONE 0x00 | |
104 | #define L2CAP_FCS_CRC16 0x01 | |
1da177e4 | 105 | |
1c2acffb GP |
106 | /* L2CAP Control Field bit masks */ |
107 | #define L2CAP_CTRL_SAR 0xC000 | |
108 | #define L2CAP_CTRL_REQSEQ 0x3F00 | |
109 | #define L2CAP_CTRL_TXSEQ 0x007E | |
110 | #define L2CAP_CTRL_RETRANS 0x0080 | |
111 | #define L2CAP_CTRL_FINAL 0x0080 | |
112 | #define L2CAP_CTRL_POLL 0x0010 | |
113 | #define L2CAP_CTRL_SUPERVISE 0x000C | |
114 | #define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */ | |
115 | ||
116 | #define L2CAP_CTRL_TXSEQ_SHIFT 1 | |
117 | #define L2CAP_CTRL_REQSEQ_SHIFT 8 | |
8f17154f | 118 | #define L2CAP_CTRL_SAR_SHIFT 14 |
1c2acffb GP |
119 | |
120 | /* L2CAP Supervisory Function */ | |
121 | #define L2CAP_SUPER_RCV_READY 0x0000 | |
122 | #define L2CAP_SUPER_REJECT 0x0004 | |
123 | #define L2CAP_SUPER_RCV_NOT_READY 0x0008 | |
124 | #define L2CAP_SUPER_SELECT_REJECT 0x000C | |
125 | ||
126 | /* L2CAP Segmentation and Reassembly */ | |
127 | #define L2CAP_SDU_UNSEGMENTED 0x0000 | |
128 | #define L2CAP_SDU_START 0x4000 | |
129 | #define L2CAP_SDU_END 0x8000 | |
130 | #define L2CAP_SDU_CONTINUE 0xC000 | |
131 | ||
e2fd318e IK |
132 | /* L2CAP Command rej. reasons */ |
133 | #define L2CAP_REJ_NOT_UNDERSTOOD 0x0000 | |
134 | #define L2CAP_REJ_MTU_EXCEEDED 0x0001 | |
135 | #define L2CAP_REJ_INVALID_CID 0x0002 | |
136 | ||
137 | ||
1da177e4 LT |
138 | /* L2CAP structures */ |
139 | struct l2cap_hdr { | |
8e036fc3 AV |
140 | __le16 len; |
141 | __le16 cid; | |
66c853cc | 142 | } __packed; |
1da177e4 LT |
143 | #define L2CAP_HDR_SIZE 4 |
144 | ||
145 | struct l2cap_cmd_hdr { | |
146 | __u8 code; | |
147 | __u8 ident; | |
8e036fc3 | 148 | __le16 len; |
66c853cc | 149 | } __packed; |
1da177e4 LT |
150 | #define L2CAP_CMD_HDR_SIZE 4 |
151 | ||
e2fd318e IK |
152 | struct l2cap_cmd_rej_unk { |
153 | __le16 reason; | |
154 | } __packed; | |
155 | ||
156 | struct l2cap_cmd_rej_mtu { | |
8e036fc3 | 157 | __le16 reason; |
e2fd318e IK |
158 | __le16 max_mtu; |
159 | } __packed; | |
160 | ||
161 | struct l2cap_cmd_rej_cid { | |
162 | __le16 reason; | |
163 | __le16 scid; | |
164 | __le16 dcid; | |
66c853cc | 165 | } __packed; |
1da177e4 LT |
166 | |
167 | struct l2cap_conn_req { | |
8e036fc3 AV |
168 | __le16 psm; |
169 | __le16 scid; | |
66c853cc | 170 | } __packed; |
1da177e4 LT |
171 | |
172 | struct l2cap_conn_rsp { | |
8e036fc3 AV |
173 | __le16 dcid; |
174 | __le16 scid; | |
175 | __le16 result; | |
176 | __le16 status; | |
66c853cc | 177 | } __packed; |
1da177e4 | 178 | |
8db4dc46 GP |
179 | /* channel indentifier */ |
180 | #define L2CAP_CID_SIGNALING 0x0001 | |
181 | #define L2CAP_CID_CONN_LESS 0x0002 | |
acd7d370 VT |
182 | #define L2CAP_CID_LE_DATA 0x0004 |
183 | #define L2CAP_CID_LE_SIGNALING 0x0005 | |
184 | #define L2CAP_CID_SMP 0x0006 | |
8db4dc46 GP |
185 | #define L2CAP_CID_DYN_START 0x0040 |
186 | #define L2CAP_CID_DYN_END 0xffff | |
187 | ||
1da177e4 | 188 | /* connect result */ |
47ec1dcd MH |
189 | #define L2CAP_CR_SUCCESS 0x0000 |
190 | #define L2CAP_CR_PEND 0x0001 | |
191 | #define L2CAP_CR_BAD_PSM 0x0002 | |
192 | #define L2CAP_CR_SEC_BLOCK 0x0003 | |
193 | #define L2CAP_CR_NO_MEM 0x0004 | |
1da177e4 LT |
194 | |
195 | /* connect status */ | |
47ec1dcd MH |
196 | #define L2CAP_CS_NO_INFO 0x0000 |
197 | #define L2CAP_CS_AUTHEN_PEND 0x0001 | |
198 | #define L2CAP_CS_AUTHOR_PEND 0x0002 | |
1da177e4 LT |
199 | |
200 | struct l2cap_conf_req { | |
8e036fc3 AV |
201 | __le16 dcid; |
202 | __le16 flags; | |
1da177e4 | 203 | __u8 data[0]; |
66c853cc | 204 | } __packed; |
1da177e4 LT |
205 | |
206 | struct l2cap_conf_rsp { | |
8e036fc3 AV |
207 | __le16 scid; |
208 | __le16 flags; | |
209 | __le16 result; | |
1da177e4 | 210 | __u8 data[0]; |
66c853cc | 211 | } __packed; |
1da177e4 | 212 | |
5dee9e7c MH |
213 | #define L2CAP_CONF_SUCCESS 0x0000 |
214 | #define L2CAP_CONF_UNACCEPT 0x0001 | |
215 | #define L2CAP_CONF_REJECT 0x0002 | |
216 | #define L2CAP_CONF_UNKNOWN 0x0003 | |
1da177e4 LT |
217 | |
218 | struct l2cap_conf_opt { | |
219 | __u8 type; | |
220 | __u8 len; | |
221 | __u8 val[0]; | |
66c853cc | 222 | } __packed; |
1da177e4 LT |
223 | #define L2CAP_CONF_OPT_SIZE 2 |
224 | ||
589d2746 | 225 | #define L2CAP_CONF_HINT 0x80 |
47ec1dcd | 226 | #define L2CAP_CONF_MASK 0x7f |
589d2746 | 227 | |
1da177e4 LT |
228 | #define L2CAP_CONF_MTU 0x01 |
229 | #define L2CAP_CONF_FLUSH_TO 0x02 | |
230 | #define L2CAP_CONF_QOS 0x03 | |
231 | #define L2CAP_CONF_RFC 0x04 | |
47ec1dcd | 232 | #define L2CAP_CONF_FCS 0x05 |
1da177e4 LT |
233 | |
234 | #define L2CAP_CONF_MAX_SIZE 22 | |
235 | ||
6464f35f MH |
236 | struct l2cap_conf_rfc { |
237 | __u8 mode; | |
238 | __u8 txwin_size; | |
239 | __u8 max_transmit; | |
240 | __le16 retrans_timeout; | |
241 | __le16 monitor_timeout; | |
242 | __le16 max_pdu_size; | |
66c853cc | 243 | } __packed; |
6464f35f MH |
244 | |
245 | #define L2CAP_MODE_BASIC 0x00 | |
246 | #define L2CAP_MODE_RETRANS 0x01 | |
247 | #define L2CAP_MODE_FLOWCTL 0x02 | |
47ec1dcd | 248 | #define L2CAP_MODE_ERTM 0x03 |
c6b03cf9 | 249 | #define L2CAP_MODE_STREAMING 0x04 |
6464f35f | 250 | |
1da177e4 | 251 | struct l2cap_disconn_req { |
8e036fc3 AV |
252 | __le16 dcid; |
253 | __le16 scid; | |
66c853cc | 254 | } __packed; |
1da177e4 LT |
255 | |
256 | struct l2cap_disconn_rsp { | |
8e036fc3 AV |
257 | __le16 dcid; |
258 | __le16 scid; | |
66c853cc | 259 | } __packed; |
1da177e4 LT |
260 | |
261 | struct l2cap_info_req { | |
8e036fc3 | 262 | __le16 type; |
66c853cc | 263 | } __packed; |
1da177e4 LT |
264 | |
265 | struct l2cap_info_rsp { | |
8e036fc3 AV |
266 | __le16 type; |
267 | __le16 result; | |
1da177e4 | 268 | __u8 data[0]; |
66c853cc | 269 | } __packed; |
1da177e4 LT |
270 | |
271 | /* info type */ | |
272 | #define L2CAP_IT_CL_MTU 0x0001 | |
273 | #define L2CAP_IT_FEAT_MASK 0x0002 | |
e1027a7c | 274 | #define L2CAP_IT_FIXED_CHAN 0x0003 |
1da177e4 LT |
275 | |
276 | /* info result */ | |
277 | #define L2CAP_IR_SUCCESS 0x0000 | |
278 | #define L2CAP_IR_NOTSUPP 0x0001 | |
279 | ||
de73115a CT |
280 | struct l2cap_conn_param_update_req { |
281 | __le16 min; | |
282 | __le16 max; | |
283 | __le16 latency; | |
284 | __le16 to_multiplier; | |
285 | } __packed; | |
286 | ||
287 | struct l2cap_conn_param_update_rsp { | |
288 | __le16 result; | |
289 | } __packed; | |
290 | ||
291 | /* Connection Parameters result */ | |
292 | #define L2CAP_CONN_PARAM_ACCEPTED 0x0000 | |
293 | #define L2CAP_CONN_PARAM_REJECTED 0x0001 | |
294 | ||
48454079 | 295 | /* ----- L2CAP channels and connections ----- */ |
39d5a3ee GP |
296 | struct srej_list { |
297 | __u8 tx_seq; | |
298 | struct list_head list; | |
299 | }; | |
300 | ||
48454079 GP |
301 | struct l2cap_chan { |
302 | struct sock *sk; | |
8c1d787b GP |
303 | |
304 | struct l2cap_conn *conn; | |
305 | ||
89bc500e GP |
306 | __u8 state; |
307 | ||
71ba0e56 GP |
308 | atomic_t refcnt; |
309 | ||
fe4128e0 GP |
310 | __le16 psm; |
311 | __u16 dcid; | |
312 | __u16 scid; | |
4343478f | 313 | |
0c1bc5c6 GP |
314 | __u16 imtu; |
315 | __u16 omtu; | |
316 | __u16 flush_to; | |
317 | __u8 mode; | |
715ec005 | 318 | __u8 chan_type; |
0c1bc5c6 GP |
319 | |
320 | __le16 sport; | |
321 | ||
4343478f GP |
322 | __u8 sec_level; |
323 | __u8 role_switch; | |
324 | __u8 force_reliable; | |
325 | __u8 flushable; | |
14b12d0b | 326 | __u8 force_active; |
4343478f | 327 | |
fc7f8a7e GP |
328 | __u8 ident; |
329 | ||
73ffa904 GP |
330 | __u8 conf_req[64]; |
331 | __u8 conf_len; | |
332 | __u8 num_conf_req; | |
333 | __u8 num_conf_rsp; | |
334 | ||
47d1ec61 GP |
335 | __u8 fcs; |
336 | ||
337 | __u8 tx_win; | |
338 | __u8 max_tx; | |
339 | __u16 retrans_timeout; | |
340 | __u16 monitor_timeout; | |
341 | __u16 mps; | |
342 | ||
c1360a1c | 343 | unsigned long conf_state; |
e2ab4353 | 344 | unsigned long conn_state; |
525cd185 | 345 | |
42e5c802 GP |
346 | __u8 next_tx_seq; |
347 | __u8 expected_ack_seq; | |
348 | __u8 expected_tx_seq; | |
349 | __u8 buffer_seq; | |
350 | __u8 buffer_seq_srej; | |
6a026610 GP |
351 | __u8 srej_save_reqseq; |
352 | __u8 frames_sent; | |
353 | __u8 unacked_frames; | |
354 | __u8 retry_count; | |
355 | __u8 num_acked; | |
6f61fd47 GP |
356 | __u16 sdu_len; |
357 | __u16 partial_sdu_len; | |
358 | struct sk_buff *sdu; | |
359 | ||
2c03a7a4 GP |
360 | __u8 remote_tx_win; |
361 | __u8 remote_max_tx; | |
362 | __u16 remote_mps; | |
42e5c802 | 363 | |
ab07801d | 364 | struct timer_list chan_timer; |
e92c8e70 GP |
365 | struct timer_list retrans_timer; |
366 | struct timer_list monitor_timer; | |
367 | struct timer_list ack_timer; | |
58d35f87 GP |
368 | struct sk_buff *tx_send_head; |
369 | struct sk_buff_head tx_q; | |
f1c6775b | 370 | struct sk_buff_head srej_q; |
39d5a3ee | 371 | struct list_head srej_l; |
e92c8e70 | 372 | |
baa7e1fa | 373 | struct list_head list; |
23691d75 | 374 | struct list_head global_l; |
80808e43 GP |
375 | |
376 | void *data; | |
377 | struct l2cap_ops *ops; | |
378 | }; | |
379 | ||
380 | struct l2cap_ops { | |
381 | char *name; | |
382 | ||
383 | struct l2cap_chan *(*new_connection) (void *data); | |
23070494 | 384 | int (*recv) (void *data, struct sk_buff *skb); |
ba3bd0ee | 385 | void (*close) (void *data); |
89bc500e | 386 | void (*state_change) (void *data, int state); |
1da177e4 LT |
387 | }; |
388 | ||
389 | struct l2cap_conn { | |
390 | struct hci_conn *hcon; | |
391 | ||
392 | bdaddr_t *dst; | |
393 | bdaddr_t *src; | |
394 | ||
395 | unsigned int mtu; | |
396 | ||
4e8402a3 MH |
397 | __u32 feat_mask; |
398 | ||
399 | __u8 info_state; | |
400 | __u8 info_ident; | |
401 | ||
402 | struct timer_list info_timer; | |
403 | ||
1da177e4 LT |
404 | spinlock_t lock; |
405 | ||
406 | struct sk_buff *rx_skb; | |
407 | __u32 rx_len; | |
1da177e4 LT |
408 | __u8 tx_ident; |
409 | ||
2950f21a MH |
410 | __u8 disc_reason; |
411 | ||
f01ead31 AB |
412 | __u8 preq[7]; /* SMP Pairing Request */ |
413 | __u8 prsp[7]; /* SMP Pairing Response */ | |
414 | __u8 prnd[16]; /* SMP Pairing Random */ | |
415 | __u8 pcnf[16]; /* SMP Pairing Confirm */ | |
7d24ddcc | 416 | __u8 tk[16]; /* SMP Temporary Key */ |
3158c50c | 417 | __u8 smp_key_size; |
f01ead31 | 418 | |
5d3de7df VCG |
419 | struct timer_list security_timer; |
420 | ||
baa7e1fa GP |
421 | struct list_head chan_l; |
422 | rwlock_t chan_lock; | |
1da177e4 LT |
423 | }; |
424 | ||
4e8402a3 | 425 | #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01 |
984947dc MH |
426 | #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04 |
427 | #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08 | |
4e8402a3 | 428 | |
715ec005 GP |
429 | #define L2CAP_CHAN_RAW 1 |
430 | #define L2CAP_CHAN_CONN_LESS 2 | |
431 | #define L2CAP_CHAN_CONN_ORIENTED 3 | |
432 | ||
48454079 | 433 | /* ----- L2CAP socket info ----- */ |
1da177e4 LT |
434 | #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk) |
435 | ||
436 | struct l2cap_pinfo { | |
437 | struct bt_sock bt; | |
48454079 | 438 | struct l2cap_chan *chan; |
e328140f | 439 | struct sk_buff *rx_busy_skb; |
1da177e4 LT |
440 | }; |
441 | ||
c1360a1c GP |
442 | enum { |
443 | CONF_REQ_SENT, | |
444 | CONF_INPUT_DONE, | |
445 | CONF_OUTPUT_DONE, | |
446 | CONF_MTU_DONE, | |
447 | CONF_MODE_DONE, | |
448 | CONF_CONNECT_PEND, | |
449 | CONF_NO_FCS_RECV, | |
450 | CONF_STATE2_DEVICE, | |
451 | }; | |
f2fcfcd6 GP |
452 | |
453 | #define L2CAP_CONF_MAX_CONF_REQ 2 | |
454 | #define L2CAP_CONF_MAX_CONF_RSP 2 | |
861d6882 | 455 | |
e2ab4353 GP |
456 | enum { |
457 | CONN_SAR_SDU, | |
458 | CONN_SREJ_SENT, | |
459 | CONN_WAIT_F, | |
460 | CONN_SREJ_ACT, | |
461 | CONN_SEND_PBIT, | |
462 | CONN_REMOTE_BUSY, | |
463 | CONN_LOCAL_BUSY, | |
464 | CONN_REJ_ACT, | |
465 | CONN_SEND_FBIT, | |
466 | CONN_RNR_SENT, | |
e2ab4353 | 467 | }; |
e90bac06 | 468 | |
c9b66675 GP |
469 | #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t)) |
470 | #define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer) | |
1a09bcb9 GP |
471 | #define __set_retrans_timer(c) l2cap_set_timer(c, &c->retrans_timer, \ |
472 | L2CAP_DEFAULT_RETRANS_TO); | |
473 | #define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer) | |
474 | #define __set_monitor_timer(c) l2cap_set_timer(c, &c->monitor_timer, \ | |
475 | L2CAP_DEFAULT_MONITOR_TO); | |
476 | #define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer) | |
477 | #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \ | |
478 | L2CAP_DEFAULT_ACK_TO); | |
479 | #define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer) | |
c74e560c | 480 | |
42e5c802 | 481 | static inline int l2cap_tx_window_full(struct l2cap_chan *ch) |
1c2acffb | 482 | { |
1c2acffb GP |
483 | int sub; |
484 | ||
42e5c802 | 485 | sub = (ch->next_tx_seq - ch->expected_ack_seq) % 64; |
1c2acffb GP |
486 | |
487 | if (sub < 0) | |
488 | sub += 64; | |
489 | ||
2c03a7a4 | 490 | return sub == ch->remote_tx_win; |
1c2acffb GP |
491 | } |
492 | ||
894718a6 AE |
493 | #define __get_txseq(ctrl) (((ctrl) & L2CAP_CTRL_TXSEQ) >> 1) |
494 | #define __get_reqseq(ctrl) (((ctrl) & L2CAP_CTRL_REQSEQ) >> 8) | |
495 | #define __is_iframe(ctrl) (!((ctrl) & L2CAP_CTRL_FRAME_TYPE)) | |
496 | #define __is_sframe(ctrl) ((ctrl) & L2CAP_CTRL_FRAME_TYPE) | |
497 | #define __is_sar_start(ctrl) (((ctrl) & L2CAP_CTRL_SAR) == L2CAP_SDU_START) | |
1da177e4 | 498 | |
bb58f747 | 499 | extern int disable_ertm; |
bb58f747 GP |
500 | |
501 | int l2cap_init_sockets(void); | |
502 | void l2cap_cleanup_sockets(void); | |
503 | ||
8c1d787b | 504 | void __l2cap_connect_rsp_defer(struct l2cap_chan *chan); |
dcba0dba | 505 | int __l2cap_wait_ack(struct sock *sk); |
68983259 | 506 | |
9e4425ff GP |
507 | int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm); |
508 | int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid); | |
509 | ||
23691d75 | 510 | struct l2cap_chan *l2cap_chan_create(struct sock *sk); |
0f852724 | 511 | void l2cap_chan_close(struct l2cap_chan *chan, int reason); |
23691d75 | 512 | void l2cap_chan_destroy(struct l2cap_chan *chan); |
77a74c7e | 513 | int l2cap_chan_connect(struct l2cap_chan *chan); |
9a91a04a | 514 | int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len); |
e328140f | 515 | void l2cap_chan_busy(struct l2cap_chan *chan, int busy); |
bb58f747 | 516 | |
1da177e4 | 517 | #endif /* __L2CAP_H */ |