Commit | Line | Data |
---|---|---|
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 | 93 | |
a858393b | 94 | /* L2CAP extended feature mask */ |
47ec1dcd MH |
95 | #define L2CAP_FEAT_FLOWCTL 0x00000001 |
96 | #define L2CAP_FEAT_RETRANS 0x00000002 | |
a858393b | 97 | #define L2CAP_FEAT_BIDIR_QOS 0x00000004 |
47ec1dcd MH |
98 | #define L2CAP_FEAT_ERTM 0x00000008 |
99 | #define L2CAP_FEAT_STREAMING 0x00000010 | |
100 | #define L2CAP_FEAT_FCS 0x00000020 | |
a858393b | 101 | #define L2CAP_FEAT_EXT_FLOW 0x00000040 |
47ec1dcd | 102 | #define L2CAP_FEAT_FIXED_CHAN 0x00000080 |
a858393b AE |
103 | #define L2CAP_FEAT_EXT_WINDOW 0x00000100 |
104 | #define L2CAP_FEAT_UCD 0x00000200 | |
47ec1dcd MH |
105 | |
106 | /* L2CAP checksum option */ | |
107 | #define L2CAP_FCS_NONE 0x00 | |
108 | #define L2CAP_FCS_CRC16 0x01 | |
1da177e4 | 109 | |
1c2acffb GP |
110 | /* L2CAP Control Field bit masks */ |
111 | #define L2CAP_CTRL_SAR 0xC000 | |
112 | #define L2CAP_CTRL_REQSEQ 0x3F00 | |
113 | #define L2CAP_CTRL_TXSEQ 0x007E | |
114 | #define L2CAP_CTRL_RETRANS 0x0080 | |
115 | #define L2CAP_CTRL_FINAL 0x0080 | |
116 | #define L2CAP_CTRL_POLL 0x0010 | |
117 | #define L2CAP_CTRL_SUPERVISE 0x000C | |
118 | #define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */ | |
119 | ||
120 | #define L2CAP_CTRL_TXSEQ_SHIFT 1 | |
121 | #define L2CAP_CTRL_REQSEQ_SHIFT 8 | |
8f17154f | 122 | #define L2CAP_CTRL_SAR_SHIFT 14 |
1c2acffb GP |
123 | |
124 | /* L2CAP Supervisory Function */ | |
125 | #define L2CAP_SUPER_RCV_READY 0x0000 | |
126 | #define L2CAP_SUPER_REJECT 0x0004 | |
127 | #define L2CAP_SUPER_RCV_NOT_READY 0x0008 | |
128 | #define L2CAP_SUPER_SELECT_REJECT 0x000C | |
129 | ||
130 | /* L2CAP Segmentation and Reassembly */ | |
131 | #define L2CAP_SDU_UNSEGMENTED 0x0000 | |
132 | #define L2CAP_SDU_START 0x4000 | |
133 | #define L2CAP_SDU_END 0x8000 | |
134 | #define L2CAP_SDU_CONTINUE 0xC000 | |
135 | ||
e2fd318e IK |
136 | /* L2CAP Command rej. reasons */ |
137 | #define L2CAP_REJ_NOT_UNDERSTOOD 0x0000 | |
138 | #define L2CAP_REJ_MTU_EXCEEDED 0x0001 | |
139 | #define L2CAP_REJ_INVALID_CID 0x0002 | |
140 | ||
141 | ||
1da177e4 LT |
142 | /* L2CAP structures */ |
143 | struct l2cap_hdr { | |
8e036fc3 AV |
144 | __le16 len; |
145 | __le16 cid; | |
66c853cc | 146 | } __packed; |
1da177e4 LT |
147 | #define L2CAP_HDR_SIZE 4 |
148 | ||
149 | struct l2cap_cmd_hdr { | |
150 | __u8 code; | |
151 | __u8 ident; | |
8e036fc3 | 152 | __le16 len; |
66c853cc | 153 | } __packed; |
1da177e4 LT |
154 | #define L2CAP_CMD_HDR_SIZE 4 |
155 | ||
e2fd318e IK |
156 | struct l2cap_cmd_rej_unk { |
157 | __le16 reason; | |
158 | } __packed; | |
159 | ||
160 | struct l2cap_cmd_rej_mtu { | |
8e036fc3 | 161 | __le16 reason; |
e2fd318e IK |
162 | __le16 max_mtu; |
163 | } __packed; | |
164 | ||
165 | struct l2cap_cmd_rej_cid { | |
166 | __le16 reason; | |
167 | __le16 scid; | |
168 | __le16 dcid; | |
66c853cc | 169 | } __packed; |
1da177e4 LT |
170 | |
171 | struct l2cap_conn_req { | |
8e036fc3 AV |
172 | __le16 psm; |
173 | __le16 scid; | |
66c853cc | 174 | } __packed; |
1da177e4 LT |
175 | |
176 | struct l2cap_conn_rsp { | |
8e036fc3 AV |
177 | __le16 dcid; |
178 | __le16 scid; | |
179 | __le16 result; | |
180 | __le16 status; | |
66c853cc | 181 | } __packed; |
1da177e4 | 182 | |
8db4dc46 GP |
183 | /* channel indentifier */ |
184 | #define L2CAP_CID_SIGNALING 0x0001 | |
185 | #define L2CAP_CID_CONN_LESS 0x0002 | |
acd7d370 VT |
186 | #define L2CAP_CID_LE_DATA 0x0004 |
187 | #define L2CAP_CID_LE_SIGNALING 0x0005 | |
188 | #define L2CAP_CID_SMP 0x0006 | |
8db4dc46 GP |
189 | #define L2CAP_CID_DYN_START 0x0040 |
190 | #define L2CAP_CID_DYN_END 0xffff | |
191 | ||
1da177e4 | 192 | /* connect result */ |
47ec1dcd MH |
193 | #define L2CAP_CR_SUCCESS 0x0000 |
194 | #define L2CAP_CR_PEND 0x0001 | |
195 | #define L2CAP_CR_BAD_PSM 0x0002 | |
196 | #define L2CAP_CR_SEC_BLOCK 0x0003 | |
197 | #define L2CAP_CR_NO_MEM 0x0004 | |
1da177e4 LT |
198 | |
199 | /* connect status */ | |
47ec1dcd MH |
200 | #define L2CAP_CS_NO_INFO 0x0000 |
201 | #define L2CAP_CS_AUTHEN_PEND 0x0001 | |
202 | #define L2CAP_CS_AUTHOR_PEND 0x0002 | |
1da177e4 LT |
203 | |
204 | struct l2cap_conf_req { | |
8e036fc3 AV |
205 | __le16 dcid; |
206 | __le16 flags; | |
1da177e4 | 207 | __u8 data[0]; |
66c853cc | 208 | } __packed; |
1da177e4 LT |
209 | |
210 | struct l2cap_conf_rsp { | |
8e036fc3 AV |
211 | __le16 scid; |
212 | __le16 flags; | |
213 | __le16 result; | |
1da177e4 | 214 | __u8 data[0]; |
66c853cc | 215 | } __packed; |
1da177e4 | 216 | |
5dee9e7c MH |
217 | #define L2CAP_CONF_SUCCESS 0x0000 |
218 | #define L2CAP_CONF_UNACCEPT 0x0001 | |
219 | #define L2CAP_CONF_REJECT 0x0002 | |
220 | #define L2CAP_CONF_UNKNOWN 0x0003 | |
1da177e4 LT |
221 | |
222 | struct l2cap_conf_opt { | |
223 | __u8 type; | |
224 | __u8 len; | |
225 | __u8 val[0]; | |
66c853cc | 226 | } __packed; |
1da177e4 LT |
227 | #define L2CAP_CONF_OPT_SIZE 2 |
228 | ||
589d2746 | 229 | #define L2CAP_CONF_HINT 0x80 |
47ec1dcd | 230 | #define L2CAP_CONF_MASK 0x7f |
589d2746 | 231 | |
1da177e4 LT |
232 | #define L2CAP_CONF_MTU 0x01 |
233 | #define L2CAP_CONF_FLUSH_TO 0x02 | |
234 | #define L2CAP_CONF_QOS 0x03 | |
235 | #define L2CAP_CONF_RFC 0x04 | |
47ec1dcd | 236 | #define L2CAP_CONF_FCS 0x05 |
1da177e4 LT |
237 | |
238 | #define L2CAP_CONF_MAX_SIZE 22 | |
239 | ||
6464f35f MH |
240 | struct l2cap_conf_rfc { |
241 | __u8 mode; | |
242 | __u8 txwin_size; | |
243 | __u8 max_transmit; | |
244 | __le16 retrans_timeout; | |
245 | __le16 monitor_timeout; | |
246 | __le16 max_pdu_size; | |
66c853cc | 247 | } __packed; |
6464f35f MH |
248 | |
249 | #define L2CAP_MODE_BASIC 0x00 | |
250 | #define L2CAP_MODE_RETRANS 0x01 | |
251 | #define L2CAP_MODE_FLOWCTL 0x02 | |
47ec1dcd | 252 | #define L2CAP_MODE_ERTM 0x03 |
c6b03cf9 | 253 | #define L2CAP_MODE_STREAMING 0x04 |
6464f35f | 254 | |
1da177e4 | 255 | struct l2cap_disconn_req { |
8e036fc3 AV |
256 | __le16 dcid; |
257 | __le16 scid; | |
66c853cc | 258 | } __packed; |
1da177e4 LT |
259 | |
260 | struct l2cap_disconn_rsp { | |
8e036fc3 AV |
261 | __le16 dcid; |
262 | __le16 scid; | |
66c853cc | 263 | } __packed; |
1da177e4 LT |
264 | |
265 | struct l2cap_info_req { | |
8e036fc3 | 266 | __le16 type; |
66c853cc | 267 | } __packed; |
1da177e4 LT |
268 | |
269 | struct l2cap_info_rsp { | |
8e036fc3 AV |
270 | __le16 type; |
271 | __le16 result; | |
1da177e4 | 272 | __u8 data[0]; |
66c853cc | 273 | } __packed; |
1da177e4 LT |
274 | |
275 | /* info type */ | |
276 | #define L2CAP_IT_CL_MTU 0x0001 | |
277 | #define L2CAP_IT_FEAT_MASK 0x0002 | |
e1027a7c | 278 | #define L2CAP_IT_FIXED_CHAN 0x0003 |
1da177e4 LT |
279 | |
280 | /* info result */ | |
281 | #define L2CAP_IR_SUCCESS 0x0000 | |
282 | #define L2CAP_IR_NOTSUPP 0x0001 | |
283 | ||
de73115a CT |
284 | struct l2cap_conn_param_update_req { |
285 | __le16 min; | |
286 | __le16 max; | |
287 | __le16 latency; | |
288 | __le16 to_multiplier; | |
289 | } __packed; | |
290 | ||
291 | struct l2cap_conn_param_update_rsp { | |
292 | __le16 result; | |
293 | } __packed; | |
294 | ||
295 | /* Connection Parameters result */ | |
296 | #define L2CAP_CONN_PARAM_ACCEPTED 0x0000 | |
297 | #define L2CAP_CONN_PARAM_REJECTED 0x0001 | |
298 | ||
48454079 | 299 | /* ----- L2CAP channels and connections ----- */ |
39d5a3ee GP |
300 | struct srej_list { |
301 | __u8 tx_seq; | |
302 | struct list_head list; | |
303 | }; | |
304 | ||
48454079 GP |
305 | struct l2cap_chan { |
306 | struct sock *sk; | |
8c1d787b GP |
307 | |
308 | struct l2cap_conn *conn; | |
309 | ||
89bc500e GP |
310 | __u8 state; |
311 | ||
71ba0e56 GP |
312 | atomic_t refcnt; |
313 | ||
fe4128e0 GP |
314 | __le16 psm; |
315 | __u16 dcid; | |
316 | __u16 scid; | |
4343478f | 317 | |
0c1bc5c6 GP |
318 | __u16 imtu; |
319 | __u16 omtu; | |
320 | __u16 flush_to; | |
321 | __u8 mode; | |
715ec005 | 322 | __u8 chan_type; |
0c1bc5c6 GP |
323 | |
324 | __le16 sport; | |
325 | ||
4343478f | 326 | __u8 sec_level; |
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; |
d57b0e8b | 345 | unsigned long flags; |
525cd185 | 346 | |
42e5c802 GP |
347 | __u8 next_tx_seq; |
348 | __u8 expected_ack_seq; | |
349 | __u8 expected_tx_seq; | |
350 | __u8 buffer_seq; | |
351 | __u8 buffer_seq_srej; | |
6a026610 GP |
352 | __u8 srej_save_reqseq; |
353 | __u8 frames_sent; | |
354 | __u8 unacked_frames; | |
355 | __u8 retry_count; | |
356 | __u8 num_acked; | |
6f61fd47 | 357 | __u16 sdu_len; |
6f61fd47 | 358 | struct sk_buff *sdu; |
84084a31 | 359 | struct sk_buff *sdu_last_frag; |
6f61fd47 | 360 | |
2c03a7a4 GP |
361 | __u8 remote_tx_win; |
362 | __u8 remote_max_tx; | |
363 | __u16 remote_mps; | |
42e5c802 | 364 | |
ab07801d | 365 | struct timer_list chan_timer; |
e92c8e70 GP |
366 | struct timer_list retrans_timer; |
367 | struct timer_list monitor_timer; | |
368 | struct timer_list ack_timer; | |
58d35f87 GP |
369 | struct sk_buff *tx_send_head; |
370 | struct sk_buff_head tx_q; | |
f1c6775b | 371 | struct sk_buff_head srej_q; |
39d5a3ee | 372 | struct list_head srej_l; |
e92c8e70 | 373 | |
baa7e1fa | 374 | struct list_head list; |
23691d75 | 375 | struct list_head global_l; |
80808e43 GP |
376 | |
377 | void *data; | |
378 | struct l2cap_ops *ops; | |
379 | }; | |
380 | ||
381 | struct l2cap_ops { | |
382 | char *name; | |
383 | ||
384 | struct l2cap_chan *(*new_connection) (void *data); | |
23070494 | 385 | int (*recv) (void *data, struct sk_buff *skb); |
ba3bd0ee | 386 | void (*close) (void *data); |
89bc500e | 387 | void (*state_change) (void *data, int state); |
1da177e4 LT |
388 | }; |
389 | ||
390 | struct l2cap_conn { | |
391 | struct hci_conn *hcon; | |
392 | ||
393 | bdaddr_t *dst; | |
394 | bdaddr_t *src; | |
395 | ||
396 | unsigned int mtu; | |
397 | ||
4e8402a3 MH |
398 | __u32 feat_mask; |
399 | ||
400 | __u8 info_state; | |
401 | __u8 info_ident; | |
402 | ||
403 | struct timer_list info_timer; | |
404 | ||
1da177e4 LT |
405 | spinlock_t lock; |
406 | ||
407 | struct sk_buff *rx_skb; | |
408 | __u32 rx_len; | |
1da177e4 LT |
409 | __u8 tx_ident; |
410 | ||
2950f21a MH |
411 | __u8 disc_reason; |
412 | ||
5d3de7df | 413 | struct timer_list security_timer; |
1c1def09 | 414 | struct smp_chan *smp_chan; |
5d3de7df | 415 | |
baa7e1fa GP |
416 | struct list_head chan_l; |
417 | rwlock_t chan_lock; | |
1da177e4 LT |
418 | }; |
419 | ||
4e8402a3 | 420 | #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01 |
984947dc MH |
421 | #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04 |
422 | #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08 | |
4e8402a3 | 423 | |
715ec005 GP |
424 | #define L2CAP_CHAN_RAW 1 |
425 | #define L2CAP_CHAN_CONN_LESS 2 | |
426 | #define L2CAP_CHAN_CONN_ORIENTED 3 | |
427 | ||
48454079 | 428 | /* ----- L2CAP socket info ----- */ |
1da177e4 LT |
429 | #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk) |
430 | ||
431 | struct l2cap_pinfo { | |
432 | struct bt_sock bt; | |
48454079 | 433 | struct l2cap_chan *chan; |
e328140f | 434 | struct sk_buff *rx_busy_skb; |
1da177e4 LT |
435 | }; |
436 | ||
c1360a1c GP |
437 | enum { |
438 | CONF_REQ_SENT, | |
439 | CONF_INPUT_DONE, | |
440 | CONF_OUTPUT_DONE, | |
441 | CONF_MTU_DONE, | |
442 | CONF_MODE_DONE, | |
443 | CONF_CONNECT_PEND, | |
444 | CONF_NO_FCS_RECV, | |
445 | CONF_STATE2_DEVICE, | |
446 | }; | |
f2fcfcd6 GP |
447 | |
448 | #define L2CAP_CONF_MAX_CONF_REQ 2 | |
449 | #define L2CAP_CONF_MAX_CONF_RSP 2 | |
861d6882 | 450 | |
e2ab4353 | 451 | enum { |
e2ab4353 GP |
452 | CONN_SREJ_SENT, |
453 | CONN_WAIT_F, | |
454 | CONN_SREJ_ACT, | |
455 | CONN_SEND_PBIT, | |
456 | CONN_REMOTE_BUSY, | |
457 | CONN_LOCAL_BUSY, | |
458 | CONN_REJ_ACT, | |
459 | CONN_SEND_FBIT, | |
460 | CONN_RNR_SENT, | |
e2ab4353 | 461 | }; |
e90bac06 | 462 | |
d57b0e8b AE |
463 | /* Definitions for flags in l2cap_chan */ |
464 | enum { | |
43bd0f32 | 465 | FLAG_ROLE_SWITCH, |
15770b1a | 466 | FLAG_FORCE_ACTIVE, |
ecf61bdb | 467 | FLAG_FORCE_RELIABLE, |
d57b0e8b AE |
468 | FLAG_FLUSHABLE, |
469 | }; | |
470 | ||
c9b66675 GP |
471 | #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t)) |
472 | #define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer) | |
1a09bcb9 GP |
473 | #define __set_retrans_timer(c) l2cap_set_timer(c, &c->retrans_timer, \ |
474 | L2CAP_DEFAULT_RETRANS_TO); | |
475 | #define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer) | |
476 | #define __set_monitor_timer(c) l2cap_set_timer(c, &c->monitor_timer, \ | |
477 | L2CAP_DEFAULT_MONITOR_TO); | |
478 | #define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer) | |
479 | #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \ | |
480 | L2CAP_DEFAULT_ACK_TO); | |
481 | #define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer) | |
c74e560c | 482 | |
42e5c802 | 483 | static inline int l2cap_tx_window_full(struct l2cap_chan *ch) |
1c2acffb | 484 | { |
1c2acffb GP |
485 | int sub; |
486 | ||
42e5c802 | 487 | sub = (ch->next_tx_seq - ch->expected_ack_seq) % 64; |
1c2acffb GP |
488 | |
489 | if (sub < 0) | |
490 | sub += 64; | |
491 | ||
2c03a7a4 | 492 | return sub == ch->remote_tx_win; |
1c2acffb GP |
493 | } |
494 | ||
894718a6 AE |
495 | #define __get_txseq(ctrl) (((ctrl) & L2CAP_CTRL_TXSEQ) >> 1) |
496 | #define __get_reqseq(ctrl) (((ctrl) & L2CAP_CTRL_REQSEQ) >> 8) | |
497 | #define __is_iframe(ctrl) (!((ctrl) & L2CAP_CTRL_FRAME_TYPE)) | |
498 | #define __is_sframe(ctrl) ((ctrl) & L2CAP_CTRL_FRAME_TYPE) | |
499 | #define __is_sar_start(ctrl) (((ctrl) & L2CAP_CTRL_SAR) == L2CAP_SDU_START) | |
1da177e4 | 500 | |
bb58f747 | 501 | extern int disable_ertm; |
bb58f747 GP |
502 | |
503 | int l2cap_init_sockets(void); | |
504 | void l2cap_cleanup_sockets(void); | |
505 | ||
8c1d787b | 506 | void __l2cap_connect_rsp_defer(struct l2cap_chan *chan); |
dcba0dba | 507 | int __l2cap_wait_ack(struct sock *sk); |
68983259 | 508 | |
9e4425ff GP |
509 | int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm); |
510 | int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid); | |
511 | ||
23691d75 | 512 | struct l2cap_chan *l2cap_chan_create(struct sock *sk); |
0f852724 | 513 | void l2cap_chan_close(struct l2cap_chan *chan, int reason); |
23691d75 | 514 | void l2cap_chan_destroy(struct l2cap_chan *chan); |
77a74c7e | 515 | int l2cap_chan_connect(struct l2cap_chan *chan); |
9a91a04a | 516 | int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len); |
e328140f | 517 | void l2cap_chan_busy(struct l2cap_chan *chan, int busy); |
bb58f747 | 518 | |
1da177e4 | 519 | #endif /* __L2CAP_H */ |