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 | ||
88843ab0 AE |
30 | #include <asm/unaligned.h> |
31 | ||
1da177e4 | 32 | /* L2CAP defaults */ |
47ec1dcd | 33 | #define L2CAP_DEFAULT_MTU 672 |
f2fcfcd6 | 34 | #define L2CAP_DEFAULT_MIN_MTU 48 |
47ec1dcd | 35 | #define L2CAP_DEFAULT_FLUSH_TO 0xffff |
1c2acffb | 36 | #define L2CAP_DEFAULT_TX_WINDOW 63 |
6327eb98 | 37 | #define L2CAP_DEFAULT_EXT_WINDOW 0x3FFF |
e90bac06 | 38 | #define L2CAP_DEFAULT_MAX_TX 3 |
fa235562 | 39 | #define L2CAP_DEFAULT_RETRANS_TO 2000 /* 2 seconds */ |
e90bac06 | 40 | #define L2CAP_DEFAULT_MONITOR_TO 12000 /* 12 seconds */ |
db12d647 | 41 | #define L2CAP_DEFAULT_MAX_PDU_SIZE 1009 /* Sized for 3-DH5 packet */ |
c1b4f43b | 42 | #define L2CAP_DEFAULT_ACK_TO 200 |
b62f328b | 43 | #define L2CAP_LE_DEFAULT_MTU 23 |
8f7975b1 AE |
44 | #define L2CAP_DEFAULT_MAX_SDU_SIZE 0xFFFF |
45 | #define L2CAP_DEFAULT_SDU_ITIME 0xFFFFFFFF | |
46 | #define L2CAP_DEFAULT_ACC_LAT 0xFFFFFFFF | |
1da177e4 | 47 | |
f3f668b0 AK |
48 | #define L2CAP_DISC_TIMEOUT (100) |
49 | #define L2CAP_DISC_REJ_TIMEOUT (5000) /* 5 seconds */ | |
50 | #define L2CAP_ENC_TIMEOUT (5000) /* 5 seconds */ | |
51 | #define L2CAP_CONN_TIMEOUT (40000) /* 40 seconds */ | |
52 | #define L2CAP_INFO_TIMEOUT (4000) /* 4 seconds */ | |
1da177e4 LT |
53 | |
54 | /* L2CAP socket address */ | |
55 | struct sockaddr_l2 { | |
56 | sa_family_t l2_family; | |
8e036fc3 | 57 | __le16 l2_psm; |
1da177e4 | 58 | bdaddr_t l2_bdaddr; |
f29972de | 59 | __le16 l2_cid; |
1da177e4 LT |
60 | }; |
61 | ||
62 | /* L2CAP socket options */ | |
63 | #define L2CAP_OPTIONS 0x01 | |
64 | struct l2cap_options { | |
65 | __u16 omtu; | |
66 | __u16 imtu; | |
67 | __u16 flush_to; | |
68 | __u8 mode; | |
fcc203c3 | 69 | __u8 fcs; |
68d7f0ce | 70 | __u8 max_tx; |
14b5aa71 | 71 | __u16 txwin_size; |
1da177e4 LT |
72 | }; |
73 | ||
74 | #define L2CAP_CONNINFO 0x02 | |
75 | struct l2cap_conninfo { | |
76 | __u16 hci_handle; | |
77 | __u8 dev_class[3]; | |
78 | }; | |
79 | ||
80 | #define L2CAP_LM 0x03 | |
81 | #define L2CAP_LM_MASTER 0x0001 | |
82 | #define L2CAP_LM_AUTH 0x0002 | |
83 | #define L2CAP_LM_ENCRYPT 0x0004 | |
84 | #define L2CAP_LM_TRUSTED 0x0008 | |
85 | #define L2CAP_LM_RELIABLE 0x0010 | |
86 | #define L2CAP_LM_SECURE 0x0020 | |
87 | ||
88 | /* L2CAP command codes */ | |
47ec1dcd MH |
89 | #define L2CAP_COMMAND_REJ 0x01 |
90 | #define L2CAP_CONN_REQ 0x02 | |
91 | #define L2CAP_CONN_RSP 0x03 | |
92 | #define L2CAP_CONF_REQ 0x04 | |
93 | #define L2CAP_CONF_RSP 0x05 | |
94 | #define L2CAP_DISCONN_REQ 0x06 | |
95 | #define L2CAP_DISCONN_RSP 0x07 | |
96 | #define L2CAP_ECHO_REQ 0x08 | |
97 | #define L2CAP_ECHO_RSP 0x09 | |
98 | #define L2CAP_INFO_REQ 0x0a | |
99 | #define L2CAP_INFO_RSP 0x0b | |
38094c75 MM |
100 | #define L2CAP_CREATE_CHAN_REQ 0x0c |
101 | #define L2CAP_CREATE_CHAN_RSP 0x0d | |
102 | #define L2CAP_MOVE_CHAN_REQ 0x0e | |
103 | #define L2CAP_MOVE_CHAN_RSP 0x0f | |
104 | #define L2CAP_MOVE_CHAN_CFM 0x10 | |
105 | #define L2CAP_MOVE_CHAN_CFM_RSP 0x11 | |
3300d9a9 CT |
106 | #define L2CAP_CONN_PARAM_UPDATE_REQ 0x12 |
107 | #define L2CAP_CONN_PARAM_UPDATE_RSP 0x13 | |
47ec1dcd | 108 | |
a858393b | 109 | /* L2CAP extended feature mask */ |
47ec1dcd MH |
110 | #define L2CAP_FEAT_FLOWCTL 0x00000001 |
111 | #define L2CAP_FEAT_RETRANS 0x00000002 | |
a858393b | 112 | #define L2CAP_FEAT_BIDIR_QOS 0x00000004 |
47ec1dcd MH |
113 | #define L2CAP_FEAT_ERTM 0x00000008 |
114 | #define L2CAP_FEAT_STREAMING 0x00000010 | |
115 | #define L2CAP_FEAT_FCS 0x00000020 | |
a858393b | 116 | #define L2CAP_FEAT_EXT_FLOW 0x00000040 |
47ec1dcd | 117 | #define L2CAP_FEAT_FIXED_CHAN 0x00000080 |
a858393b AE |
118 | #define L2CAP_FEAT_EXT_WINDOW 0x00000100 |
119 | #define L2CAP_FEAT_UCD 0x00000200 | |
47ec1dcd MH |
120 | |
121 | /* L2CAP checksum option */ | |
122 | #define L2CAP_FCS_NONE 0x00 | |
123 | #define L2CAP_FCS_CRC16 0x01 | |
1da177e4 | 124 | |
d835ac0f MM |
125 | /* L2CAP fixed channels */ |
126 | #define L2CAP_FC_L2CAP 0x02 | |
127 | #define L2CAP_FC_A2MP 0x08 | |
128 | ||
1c2acffb | 129 | /* L2CAP Control Field bit masks */ |
57253fd8 AE |
130 | #define L2CAP_CTRL_SAR 0xC000 |
131 | #define L2CAP_CTRL_REQSEQ 0x3F00 | |
132 | #define L2CAP_CTRL_TXSEQ 0x007E | |
133 | #define L2CAP_CTRL_SUPERVISE 0x000C | |
134 | ||
135 | #define L2CAP_CTRL_RETRANS 0x0080 | |
136 | #define L2CAP_CTRL_FINAL 0x0080 | |
137 | #define L2CAP_CTRL_POLL 0x0010 | |
138 | #define L2CAP_CTRL_FRAME_TYPE 0x0001 /* I- or S-Frame */ | |
139 | ||
140 | #define L2CAP_CTRL_TXSEQ_SHIFT 1 | |
141 | #define L2CAP_CTRL_SUPER_SHIFT 2 | |
142 | #define L2CAP_CTRL_REQSEQ_SHIFT 8 | |
143 | #define L2CAP_CTRL_SAR_SHIFT 14 | |
144 | ||
145 | /* L2CAP Extended Control Field bit mask */ | |
146 | #define L2CAP_EXT_CTRL_TXSEQ 0xFFFC0000 | |
147 | #define L2CAP_EXT_CTRL_SAR 0x00030000 | |
148 | #define L2CAP_EXT_CTRL_SUPERVISE 0x00030000 | |
149 | #define L2CAP_EXT_CTRL_REQSEQ 0x0000FFFC | |
150 | ||
151 | #define L2CAP_EXT_CTRL_POLL 0x00040000 | |
152 | #define L2CAP_EXT_CTRL_FINAL 0x00000002 | |
153 | #define L2CAP_EXT_CTRL_FRAME_TYPE 0x00000001 /* I- or S-Frame */ | |
154 | ||
155 | #define L2CAP_EXT_CTRL_REQSEQ_SHIFT 2 | |
156 | #define L2CAP_EXT_CTRL_SAR_SHIFT 16 | |
157 | #define L2CAP_EXT_CTRL_SUPER_SHIFT 16 | |
158 | #define L2CAP_EXT_CTRL_TXSEQ_SHIFT 18 | |
1c2acffb GP |
159 | |
160 | /* L2CAP Supervisory Function */ | |
ab784b73 AE |
161 | #define L2CAP_SUPER_RR 0x00 |
162 | #define L2CAP_SUPER_REJ 0x01 | |
163 | #define L2CAP_SUPER_RNR 0x02 | |
164 | #define L2CAP_SUPER_SREJ 0x03 | |
1c2acffb GP |
165 | |
166 | /* L2CAP Segmentation and Reassembly */ | |
7e0ef6ee AE |
167 | #define L2CAP_SAR_UNSEGMENTED 0x00 |
168 | #define L2CAP_SAR_START 0x01 | |
169 | #define L2CAP_SAR_END 0x02 | |
170 | #define L2CAP_SAR_CONTINUE 0x03 | |
1c2acffb | 171 | |
e2fd318e | 172 | /* L2CAP Command rej. reasons */ |
8d6765aa AE |
173 | #define L2CAP_REJ_NOT_UNDERSTOOD 0x0000 |
174 | #define L2CAP_REJ_MTU_EXCEEDED 0x0001 | |
175 | #define L2CAP_REJ_INVALID_CID 0x0002 | |
e2fd318e | 176 | |
1da177e4 LT |
177 | /* L2CAP structures */ |
178 | struct l2cap_hdr { | |
8e036fc3 AV |
179 | __le16 len; |
180 | __le16 cid; | |
66c853cc | 181 | } __packed; |
1da177e4 | 182 | #define L2CAP_HDR_SIZE 4 |
d43cb289 AE |
183 | #define L2CAP_ENH_HDR_SIZE 6 |
184 | #define L2CAP_EXT_HDR_SIZE 8 | |
185 | ||
186 | #define L2CAP_FCS_SIZE 2 | |
187 | #define L2CAP_SDULEN_SIZE 2 | |
188 | #define L2CAP_PSMLEN_SIZE 2 | |
1da177e4 LT |
189 | |
190 | struct l2cap_cmd_hdr { | |
191 | __u8 code; | |
192 | __u8 ident; | |
8e036fc3 | 193 | __le16 len; |
66c853cc | 194 | } __packed; |
1da177e4 LT |
195 | #define L2CAP_CMD_HDR_SIZE 4 |
196 | ||
e2fd318e IK |
197 | struct l2cap_cmd_rej_unk { |
198 | __le16 reason; | |
199 | } __packed; | |
200 | ||
201 | struct l2cap_cmd_rej_mtu { | |
8e036fc3 | 202 | __le16 reason; |
e2fd318e IK |
203 | __le16 max_mtu; |
204 | } __packed; | |
205 | ||
206 | struct l2cap_cmd_rej_cid { | |
207 | __le16 reason; | |
208 | __le16 scid; | |
209 | __le16 dcid; | |
66c853cc | 210 | } __packed; |
1da177e4 LT |
211 | |
212 | struct l2cap_conn_req { | |
8e036fc3 AV |
213 | __le16 psm; |
214 | __le16 scid; | |
66c853cc | 215 | } __packed; |
1da177e4 LT |
216 | |
217 | struct l2cap_conn_rsp { | |
8e036fc3 AV |
218 | __le16 dcid; |
219 | __le16 scid; | |
220 | __le16 result; | |
221 | __le16 status; | |
66c853cc | 222 | } __packed; |
1da177e4 | 223 | |
8db4dc46 GP |
224 | /* channel indentifier */ |
225 | #define L2CAP_CID_SIGNALING 0x0001 | |
226 | #define L2CAP_CID_CONN_LESS 0x0002 | |
acd7d370 VT |
227 | #define L2CAP_CID_LE_DATA 0x0004 |
228 | #define L2CAP_CID_LE_SIGNALING 0x0005 | |
229 | #define L2CAP_CID_SMP 0x0006 | |
8db4dc46 GP |
230 | #define L2CAP_CID_DYN_START 0x0040 |
231 | #define L2CAP_CID_DYN_END 0xffff | |
232 | ||
38094c75 | 233 | /* connect/create channel results */ |
47ec1dcd MH |
234 | #define L2CAP_CR_SUCCESS 0x0000 |
235 | #define L2CAP_CR_PEND 0x0001 | |
236 | #define L2CAP_CR_BAD_PSM 0x0002 | |
237 | #define L2CAP_CR_SEC_BLOCK 0x0003 | |
238 | #define L2CAP_CR_NO_MEM 0x0004 | |
38094c75 | 239 | #define L2CAP_CR_BAD_AMP 0x0005 |
1da177e4 | 240 | |
38094c75 | 241 | /* connect/create channel status */ |
47ec1dcd MH |
242 | #define L2CAP_CS_NO_INFO 0x0000 |
243 | #define L2CAP_CS_AUTHEN_PEND 0x0001 | |
244 | #define L2CAP_CS_AUTHOR_PEND 0x0002 | |
1da177e4 LT |
245 | |
246 | struct l2cap_conf_req { | |
8e036fc3 AV |
247 | __le16 dcid; |
248 | __le16 flags; | |
1da177e4 | 249 | __u8 data[0]; |
66c853cc | 250 | } __packed; |
1da177e4 LT |
251 | |
252 | struct l2cap_conf_rsp { | |
8e036fc3 AV |
253 | __le16 scid; |
254 | __le16 flags; | |
255 | __le16 result; | |
1da177e4 | 256 | __u8 data[0]; |
66c853cc | 257 | } __packed; |
1da177e4 | 258 | |
5dee9e7c MH |
259 | #define L2CAP_CONF_SUCCESS 0x0000 |
260 | #define L2CAP_CONF_UNACCEPT 0x0001 | |
261 | #define L2CAP_CONF_REJECT 0x0002 | |
262 | #define L2CAP_CONF_UNKNOWN 0x0003 | |
0e8b207e | 263 | #define L2CAP_CONF_PENDING 0x0004 |
5a9e7057 | 264 | #define L2CAP_CONF_EFS_REJECT 0x0005 |
1da177e4 LT |
265 | |
266 | struct l2cap_conf_opt { | |
267 | __u8 type; | |
268 | __u8 len; | |
269 | __u8 val[0]; | |
66c853cc | 270 | } __packed; |
1da177e4 LT |
271 | #define L2CAP_CONF_OPT_SIZE 2 |
272 | ||
589d2746 | 273 | #define L2CAP_CONF_HINT 0x80 |
47ec1dcd | 274 | #define L2CAP_CONF_MASK 0x7f |
589d2746 | 275 | |
1da177e4 LT |
276 | #define L2CAP_CONF_MTU 0x01 |
277 | #define L2CAP_CONF_FLUSH_TO 0x02 | |
278 | #define L2CAP_CONF_QOS 0x03 | |
279 | #define L2CAP_CONF_RFC 0x04 | |
47ec1dcd | 280 | #define L2CAP_CONF_FCS 0x05 |
5a9e7057 | 281 | #define L2CAP_CONF_EFS 0x06 |
6327eb98 | 282 | #define L2CAP_CONF_EWS 0x07 |
1da177e4 LT |
283 | |
284 | #define L2CAP_CONF_MAX_SIZE 22 | |
285 | ||
6464f35f MH |
286 | struct l2cap_conf_rfc { |
287 | __u8 mode; | |
288 | __u8 txwin_size; | |
289 | __u8 max_transmit; | |
290 | __le16 retrans_timeout; | |
291 | __le16 monitor_timeout; | |
292 | __le16 max_pdu_size; | |
66c853cc | 293 | } __packed; |
6464f35f MH |
294 | |
295 | #define L2CAP_MODE_BASIC 0x00 | |
296 | #define L2CAP_MODE_RETRANS 0x01 | |
297 | #define L2CAP_MODE_FLOWCTL 0x02 | |
47ec1dcd | 298 | #define L2CAP_MODE_ERTM 0x03 |
c6b03cf9 | 299 | #define L2CAP_MODE_STREAMING 0x04 |
6464f35f | 300 | |
5a9e7057 AE |
301 | struct l2cap_conf_efs { |
302 | __u8 id; | |
303 | __u8 stype; | |
304 | __le16 msdu; | |
305 | __le32 sdu_itime; | |
306 | __le32 acc_lat; | |
307 | __le32 flush_to; | |
308 | } __packed; | |
309 | ||
8f7975b1 AE |
310 | #define L2CAP_SERV_NOTRAFIC 0x00 |
311 | #define L2CAP_SERV_BESTEFFORT 0x01 | |
312 | #define L2CAP_SERV_GUARANTEED 0x02 | |
313 | ||
314 | #define L2CAP_BESTEFFORT_ID 0x01 | |
315 | ||
1da177e4 | 316 | struct l2cap_disconn_req { |
8e036fc3 AV |
317 | __le16 dcid; |
318 | __le16 scid; | |
66c853cc | 319 | } __packed; |
1da177e4 LT |
320 | |
321 | struct l2cap_disconn_rsp { | |
8e036fc3 AV |
322 | __le16 dcid; |
323 | __le16 scid; | |
66c853cc | 324 | } __packed; |
1da177e4 LT |
325 | |
326 | struct l2cap_info_req { | |
8e036fc3 | 327 | __le16 type; |
66c853cc | 328 | } __packed; |
1da177e4 LT |
329 | |
330 | struct l2cap_info_rsp { | |
8e036fc3 AV |
331 | __le16 type; |
332 | __le16 result; | |
1da177e4 | 333 | __u8 data[0]; |
66c853cc | 334 | } __packed; |
1da177e4 | 335 | |
38094c75 MM |
336 | struct l2cap_create_chan_req { |
337 | __le16 psm; | |
338 | __le16 scid; | |
339 | __u8 amp_id; | |
340 | } __packed; | |
341 | ||
342 | struct l2cap_create_chan_rsp { | |
343 | __le16 dcid; | |
344 | __le16 scid; | |
345 | __le16 result; | |
346 | __le16 status; | |
347 | } __packed; | |
348 | ||
349 | struct l2cap_move_chan_req { | |
350 | __le16 icid; | |
351 | __u8 dest_amp_id; | |
352 | } __packed; | |
353 | ||
354 | struct l2cap_move_chan_rsp { | |
355 | __le16 icid; | |
356 | __le16 result; | |
357 | } __packed; | |
358 | ||
359 | #define L2CAP_MR_SUCCESS 0x0000 | |
360 | #define L2CAP_MR_PEND 0x0001 | |
361 | #define L2CAP_MR_BAD_ID 0x0002 | |
362 | #define L2CAP_MR_SAME_ID 0x0003 | |
363 | #define L2CAP_MR_NOT_SUPP 0x0004 | |
364 | #define L2CAP_MR_COLLISION 0x0005 | |
365 | #define L2CAP_MR_NOT_ALLOWED 0x0006 | |
366 | ||
367 | struct l2cap_move_chan_cfm { | |
368 | __le16 icid; | |
369 | __le16 result; | |
370 | } __packed; | |
371 | ||
372 | #define L2CAP_MC_CONFIRMED 0x0000 | |
373 | #define L2CAP_MC_UNCONFIRMED 0x0001 | |
374 | ||
375 | struct l2cap_move_chan_cfm_rsp { | |
376 | __le16 icid; | |
377 | } __packed; | |
378 | ||
1da177e4 | 379 | /* info type */ |
8d6765aa AE |
380 | #define L2CAP_IT_CL_MTU 0x0001 |
381 | #define L2CAP_IT_FEAT_MASK 0x0002 | |
382 | #define L2CAP_IT_FIXED_CHAN 0x0003 | |
1da177e4 LT |
383 | |
384 | /* info result */ | |
8d6765aa AE |
385 | #define L2CAP_IR_SUCCESS 0x0000 |
386 | #define L2CAP_IR_NOTSUPP 0x0001 | |
1da177e4 | 387 | |
de73115a CT |
388 | struct l2cap_conn_param_update_req { |
389 | __le16 min; | |
390 | __le16 max; | |
391 | __le16 latency; | |
392 | __le16 to_multiplier; | |
393 | } __packed; | |
394 | ||
395 | struct l2cap_conn_param_update_rsp { | |
396 | __le16 result; | |
397 | } __packed; | |
398 | ||
399 | /* Connection Parameters result */ | |
400 | #define L2CAP_CONN_PARAM_ACCEPTED 0x0000 | |
401 | #define L2CAP_CONN_PARAM_REJECTED 0x0001 | |
402 | ||
48454079 | 403 | /* ----- L2CAP channels and connections ----- */ |
39d5a3ee | 404 | struct srej_list { |
fb45de7d | 405 | __u16 tx_seq; |
39d5a3ee GP |
406 | struct list_head list; |
407 | }; | |
408 | ||
48454079 GP |
409 | struct l2cap_chan { |
410 | struct sock *sk; | |
8c1d787b GP |
411 | |
412 | struct l2cap_conn *conn; | |
413 | ||
89bc500e GP |
414 | __u8 state; |
415 | ||
71ba0e56 GP |
416 | atomic_t refcnt; |
417 | ||
fe4128e0 GP |
418 | __le16 psm; |
419 | __u16 dcid; | |
420 | __u16 scid; | |
4343478f | 421 | |
0c1bc5c6 GP |
422 | __u16 imtu; |
423 | __u16 omtu; | |
424 | __u16 flush_to; | |
425 | __u8 mode; | |
715ec005 | 426 | __u8 chan_type; |
2ea66482 | 427 | __u8 chan_policy; |
0c1bc5c6 GP |
428 | |
429 | __le16 sport; | |
430 | ||
4343478f | 431 | __u8 sec_level; |
4343478f | 432 | |
fc7f8a7e GP |
433 | __u8 ident; |
434 | ||
73ffa904 GP |
435 | __u8 conf_req[64]; |
436 | __u8 conf_len; | |
437 | __u8 num_conf_req; | |
438 | __u8 num_conf_rsp; | |
439 | ||
47d1ec61 GP |
440 | __u8 fcs; |
441 | ||
6327eb98 | 442 | __u16 tx_win; |
836be934 | 443 | __u16 tx_win_max; |
47d1ec61 GP |
444 | __u8 max_tx; |
445 | __u16 retrans_timeout; | |
446 | __u16 monitor_timeout; | |
447 | __u16 mps; | |
448 | ||
c1360a1c | 449 | unsigned long conf_state; |
e2ab4353 | 450 | unsigned long conn_state; |
d57b0e8b | 451 | unsigned long flags; |
525cd185 | 452 | |
fb45de7d AE |
453 | __u16 next_tx_seq; |
454 | __u16 expected_ack_seq; | |
455 | __u16 expected_tx_seq; | |
0b209fae | 456 | __u16 buffer_seq; |
fb45de7d AE |
457 | __u16 buffer_seq_srej; |
458 | __u16 srej_save_reqseq; | |
459 | __u16 frames_sent; | |
460 | __u16 unacked_frames; | |
6a026610 GP |
461 | __u8 retry_count; |
462 | __u8 num_acked; | |
6f61fd47 | 463 | __u16 sdu_len; |
6f61fd47 | 464 | struct sk_buff *sdu; |
84084a31 | 465 | struct sk_buff *sdu_last_frag; |
6f61fd47 | 466 | |
6327eb98 | 467 | __u16 remote_tx_win; |
2c03a7a4 GP |
468 | __u8 remote_max_tx; |
469 | __u16 remote_mps; | |
42e5c802 | 470 | |
5a9e7057 AE |
471 | __u8 local_id; |
472 | __u8 local_stype; | |
473 | __u16 local_msdu; | |
474 | __u32 local_sdu_itime; | |
475 | __u32 local_acc_lat; | |
476 | __u32 local_flush_to; | |
477 | ||
478 | __u8 remote_id; | |
479 | __u8 remote_stype; | |
480 | __u16 remote_msdu; | |
481 | __u32 remote_sdu_itime; | |
482 | __u32 remote_acc_lat; | |
483 | __u32 remote_flush_to; | |
484 | ||
721c4181 GP |
485 | struct delayed_work chan_timer; |
486 | struct delayed_work retrans_timer; | |
487 | struct delayed_work monitor_timer; | |
488 | struct delayed_work ack_timer; | |
489 | ||
58d35f87 GP |
490 | struct sk_buff *tx_send_head; |
491 | struct sk_buff_head tx_q; | |
f1c6775b | 492 | struct sk_buff_head srej_q; |
39d5a3ee | 493 | struct list_head srej_l; |
e92c8e70 | 494 | |
baa7e1fa | 495 | struct list_head list; |
23691d75 | 496 | struct list_head global_l; |
80808e43 GP |
497 | |
498 | void *data; | |
499 | struct l2cap_ops *ops; | |
500 | }; | |
501 | ||
502 | struct l2cap_ops { | |
503 | char *name; | |
504 | ||
505 | struct l2cap_chan *(*new_connection) (void *data); | |
23070494 | 506 | int (*recv) (void *data, struct sk_buff *skb); |
ba3bd0ee | 507 | void (*close) (void *data); |
89bc500e | 508 | void (*state_change) (void *data, int state); |
1da177e4 LT |
509 | }; |
510 | ||
511 | struct l2cap_conn { | |
512 | struct hci_conn *hcon; | |
73d80deb | 513 | struct hci_chan *hchan; |
1da177e4 LT |
514 | |
515 | bdaddr_t *dst; | |
516 | bdaddr_t *src; | |
517 | ||
518 | unsigned int mtu; | |
519 | ||
4e8402a3 MH |
520 | __u32 feat_mask; |
521 | ||
522 | __u8 info_state; | |
523 | __u8 info_ident; | |
524 | ||
030013d8 | 525 | struct delayed_work info_timer; |
4e8402a3 | 526 | |
1da177e4 LT |
527 | spinlock_t lock; |
528 | ||
529 | struct sk_buff *rx_skb; | |
530 | __u32 rx_len; | |
1da177e4 LT |
531 | __u8 tx_ident; |
532 | ||
2950f21a MH |
533 | __u8 disc_reason; |
534 | ||
6c9d42a1 | 535 | struct delayed_work security_timer; |
1c1def09 | 536 | struct smp_chan *smp_chan; |
5d3de7df | 537 | |
baa7e1fa | 538 | struct list_head chan_l; |
d01b2ff4 | 539 | struct mutex chan_lock; |
1da177e4 LT |
540 | }; |
541 | ||
4e8402a3 | 542 | #define L2CAP_INFO_CL_MTU_REQ_SENT 0x01 |
984947dc MH |
543 | #define L2CAP_INFO_FEAT_MASK_REQ_SENT 0x04 |
544 | #define L2CAP_INFO_FEAT_MASK_REQ_DONE 0x08 | |
4e8402a3 | 545 | |
715ec005 GP |
546 | #define L2CAP_CHAN_RAW 1 |
547 | #define L2CAP_CHAN_CONN_LESS 2 | |
548 | #define L2CAP_CHAN_CONN_ORIENTED 3 | |
549 | ||
48454079 | 550 | /* ----- L2CAP socket info ----- */ |
1da177e4 LT |
551 | #define l2cap_pi(sk) ((struct l2cap_pinfo *) sk) |
552 | ||
553 | struct l2cap_pinfo { | |
554 | struct bt_sock bt; | |
48454079 | 555 | struct l2cap_chan *chan; |
e328140f | 556 | struct sk_buff *rx_busy_skb; |
1da177e4 LT |
557 | }; |
558 | ||
c1360a1c GP |
559 | enum { |
560 | CONF_REQ_SENT, | |
561 | CONF_INPUT_DONE, | |
562 | CONF_OUTPUT_DONE, | |
563 | CONF_MTU_DONE, | |
564 | CONF_MODE_DONE, | |
565 | CONF_CONNECT_PEND, | |
566 | CONF_NO_FCS_RECV, | |
567 | CONF_STATE2_DEVICE, | |
6327eb98 | 568 | CONF_EWS_RECV, |
0e8b207e AE |
569 | CONF_LOC_CONF_PEND, |
570 | CONF_REM_CONF_PEND, | |
c1360a1c | 571 | }; |
f2fcfcd6 GP |
572 | |
573 | #define L2CAP_CONF_MAX_CONF_REQ 2 | |
574 | #define L2CAP_CONF_MAX_CONF_RSP 2 | |
861d6882 | 575 | |
e2ab4353 | 576 | enum { |
e2ab4353 GP |
577 | CONN_SREJ_SENT, |
578 | CONN_WAIT_F, | |
579 | CONN_SREJ_ACT, | |
580 | CONN_SEND_PBIT, | |
581 | CONN_REMOTE_BUSY, | |
582 | CONN_LOCAL_BUSY, | |
583 | CONN_REJ_ACT, | |
584 | CONN_SEND_FBIT, | |
585 | CONN_RNR_SENT, | |
e2ab4353 | 586 | }; |
e90bac06 | 587 | |
d57b0e8b AE |
588 | /* Definitions for flags in l2cap_chan */ |
589 | enum { | |
43bd0f32 | 590 | FLAG_ROLE_SWITCH, |
15770b1a | 591 | FLAG_FORCE_ACTIVE, |
ecf61bdb | 592 | FLAG_FORCE_RELIABLE, |
d57b0e8b | 593 | FLAG_FLUSHABLE, |
6327eb98 | 594 | FLAG_EXT_CTRL, |
5a9e7057 | 595 | FLAG_EFS_ENABLE, |
d57b0e8b AE |
596 | }; |
597 | ||
c2ec9c1b GP |
598 | static inline void l2cap_set_timer(struct l2cap_chan *chan, |
599 | struct delayed_work *work, long timeout) | |
600 | { | |
601 | BT_DBG("chan %p state %d timeout %ld", chan, chan->state, timeout); | |
602 | ||
603 | cancel_delayed_work_sync(work); | |
604 | ||
605 | schedule_delayed_work(work, timeout); | |
606 | } | |
607 | ||
608 | static inline void l2cap_clear_timer(struct delayed_work *work) | |
609 | { | |
610 | cancel_delayed_work_sync(work); | |
611 | } | |
612 | ||
c9b66675 | 613 | #define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t)) |
721c4181 | 614 | #define __clear_chan_timer(c) l2cap_clear_timer(&c->chan_timer) |
1a09bcb9 GP |
615 | #define __set_retrans_timer(c) l2cap_set_timer(c, &c->retrans_timer, \ |
616 | L2CAP_DEFAULT_RETRANS_TO); | |
721c4181 | 617 | #define __clear_retrans_timer(c) l2cap_clear_timer(&c->retrans_timer) |
1a09bcb9 GP |
618 | #define __set_monitor_timer(c) l2cap_set_timer(c, &c->monitor_timer, \ |
619 | L2CAP_DEFAULT_MONITOR_TO); | |
721c4181 | 620 | #define __clear_monitor_timer(c) l2cap_clear_timer(&c->monitor_timer) |
1a09bcb9 GP |
621 | #define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \ |
622 | L2CAP_DEFAULT_ACK_TO); | |
721c4181 | 623 | #define __clear_ack_timer(c) l2cap_clear_timer(&c->ack_timer) |
c74e560c | 624 | |
836be934 AE |
625 | static inline int __seq_offset(struct l2cap_chan *chan, __u16 seq1, __u16 seq2) |
626 | { | |
627 | int offset; | |
628 | ||
629 | offset = (seq1 - seq2) % (chan->tx_win_max + 1); | |
630 | if (offset < 0) | |
631 | offset += (chan->tx_win_max + 1); | |
632 | ||
633 | return offset; | |
634 | } | |
635 | ||
636 | static inline __u16 __next_seq(struct l2cap_chan *chan, __u16 seq) | |
637 | { | |
638 | return (seq + 1) % (chan->tx_win_max + 1); | |
639 | } | |
640 | ||
42e5c802 | 641 | static inline int l2cap_tx_window_full(struct l2cap_chan *ch) |
1c2acffb | 642 | { |
1c2acffb GP |
643 | int sub; |
644 | ||
42e5c802 | 645 | sub = (ch->next_tx_seq - ch->expected_ack_seq) % 64; |
1c2acffb GP |
646 | |
647 | if (sub < 0) | |
648 | sub += 64; | |
649 | ||
2c03a7a4 | 650 | return sub == ch->remote_tx_win; |
1c2acffb GP |
651 | } |
652 | ||
0b209fae AE |
653 | static inline __u16 __get_reqseq(struct l2cap_chan *chan, __u32 ctrl) |
654 | { | |
655 | if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
656 | return (ctrl & L2CAP_EXT_CTRL_REQSEQ) >> | |
657 | L2CAP_EXT_CTRL_REQSEQ_SHIFT; | |
658 | else | |
659 | return (ctrl & L2CAP_CTRL_REQSEQ) >> L2CAP_CTRL_REQSEQ_SHIFT; | |
660 | } | |
661 | ||
662 | static inline __u32 __set_reqseq(struct l2cap_chan *chan, __u32 reqseq) | |
663 | { | |
664 | if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
665 | return (reqseq << L2CAP_EXT_CTRL_REQSEQ_SHIFT) & | |
666 | L2CAP_EXT_CTRL_REQSEQ; | |
667 | else | |
668 | return (reqseq << L2CAP_CTRL_REQSEQ_SHIFT) & L2CAP_CTRL_REQSEQ; | |
669 | } | |
fb45de7d AE |
670 | |
671 | static inline __u16 __get_txseq(struct l2cap_chan *chan, __u32 ctrl) | |
672 | { | |
673 | if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
674 | return (ctrl & L2CAP_EXT_CTRL_TXSEQ) >> | |
675 | L2CAP_EXT_CTRL_TXSEQ_SHIFT; | |
676 | else | |
677 | return (ctrl & L2CAP_CTRL_TXSEQ) >> L2CAP_CTRL_TXSEQ_SHIFT; | |
678 | } | |
679 | ||
680 | static inline __u32 __set_txseq(struct l2cap_chan *chan, __u32 txseq) | |
681 | { | |
682 | if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
683 | return (txseq << L2CAP_EXT_CTRL_TXSEQ_SHIFT) & | |
684 | L2CAP_EXT_CTRL_TXSEQ; | |
685 | else | |
686 | return (txseq << L2CAP_CTRL_TXSEQ_SHIFT) & L2CAP_CTRL_TXSEQ; | |
687 | } | |
688 | ||
793c2f1c AE |
689 | static inline bool __is_sframe(struct l2cap_chan *chan, __u32 ctrl) |
690 | { | |
691 | if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
692 | return ctrl & L2CAP_EXT_CTRL_FRAME_TYPE; | |
693 | else | |
694 | return ctrl & L2CAP_CTRL_FRAME_TYPE; | |
695 | } | |
696 | ||
697 | static inline __u32 __set_sframe(struct l2cap_chan *chan) | |
698 | { | |
699 | if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
700 | return L2CAP_EXT_CTRL_FRAME_TYPE; | |
701 | else | |
702 | return L2CAP_CTRL_FRAME_TYPE; | |
703 | } | |
704 | ||
7e0ef6ee AE |
705 | static inline __u8 __get_ctrl_sar(struct l2cap_chan *chan, __u32 ctrl) |
706 | { | |
707 | if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
708 | return (ctrl & L2CAP_EXT_CTRL_SAR) >> L2CAP_EXT_CTRL_SAR_SHIFT; | |
709 | else | |
710 | return (ctrl & L2CAP_CTRL_SAR) >> L2CAP_CTRL_SAR_SHIFT; | |
711 | } | |
712 | ||
713 | static inline __u32 __set_ctrl_sar(struct l2cap_chan *chan, __u32 sar) | |
714 | { | |
715 | if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
716 | return (sar << L2CAP_EXT_CTRL_SAR_SHIFT) & L2CAP_EXT_CTRL_SAR; | |
717 | else | |
718 | return (sar << L2CAP_CTRL_SAR_SHIFT) & L2CAP_CTRL_SAR; | |
719 | } | |
720 | ||
721 | static inline bool __is_sar_start(struct l2cap_chan *chan, __u32 ctrl) | |
722 | { | |
723 | return __get_ctrl_sar(chan, ctrl) == L2CAP_SAR_START; | |
724 | } | |
725 | ||
726 | static inline __u32 __get_sar_mask(struct l2cap_chan *chan) | |
727 | { | |
728 | if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
729 | return L2CAP_EXT_CTRL_SAR; | |
730 | else | |
731 | return L2CAP_CTRL_SAR; | |
732 | } | |
1da177e4 | 733 | |
ab784b73 AE |
734 | static inline __u8 __get_ctrl_super(struct l2cap_chan *chan, __u32 ctrl) |
735 | { | |
736 | if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
737 | return (ctrl & L2CAP_EXT_CTRL_SUPERVISE) >> | |
738 | L2CAP_EXT_CTRL_SUPER_SHIFT; | |
739 | else | |
740 | return (ctrl & L2CAP_CTRL_SUPERVISE) >> L2CAP_CTRL_SUPER_SHIFT; | |
741 | } | |
742 | ||
743 | static inline __u32 __set_ctrl_super(struct l2cap_chan *chan, __u32 super) | |
744 | { | |
745 | if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
746 | return (super << L2CAP_EXT_CTRL_SUPER_SHIFT) & | |
747 | L2CAP_EXT_CTRL_SUPERVISE; | |
748 | else | |
749 | return (super << L2CAP_CTRL_SUPER_SHIFT) & | |
750 | L2CAP_CTRL_SUPERVISE; | |
751 | } | |
752 | ||
03f6715d AE |
753 | static inline __u32 __set_ctrl_final(struct l2cap_chan *chan) |
754 | { | |
755 | if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
756 | return L2CAP_EXT_CTRL_FINAL; | |
757 | else | |
758 | return L2CAP_CTRL_FINAL; | |
759 | } | |
760 | ||
761 | static inline bool __is_ctrl_final(struct l2cap_chan *chan, __u32 ctrl) | |
762 | { | |
763 | if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
764 | return ctrl & L2CAP_EXT_CTRL_FINAL; | |
765 | else | |
766 | return ctrl & L2CAP_CTRL_FINAL; | |
767 | } | |
e3781735 AE |
768 | |
769 | static inline __u32 __set_ctrl_poll(struct l2cap_chan *chan) | |
770 | { | |
771 | if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
772 | return L2CAP_EXT_CTRL_POLL; | |
773 | else | |
774 | return L2CAP_CTRL_POLL; | |
775 | } | |
776 | ||
777 | static inline bool __is_ctrl_poll(struct l2cap_chan *chan, __u32 ctrl) | |
778 | { | |
779 | if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
780 | return ctrl & L2CAP_EXT_CTRL_POLL; | |
781 | else | |
782 | return ctrl & L2CAP_CTRL_POLL; | |
783 | } | |
88843ab0 AE |
784 | |
785 | static inline __u32 __get_control(struct l2cap_chan *chan, void *p) | |
786 | { | |
787 | if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
788 | return get_unaligned_le32(p); | |
789 | else | |
790 | return get_unaligned_le16(p); | |
791 | } | |
792 | ||
793 | static inline void __put_control(struct l2cap_chan *chan, __u32 control, | |
794 | void *p) | |
795 | { | |
796 | if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
797 | return put_unaligned_le32(control, p); | |
798 | else | |
799 | return put_unaligned_le16(control, p); | |
800 | } | |
801 | ||
802 | static inline __u8 __ctrl_size(struct l2cap_chan *chan) | |
803 | { | |
804 | if (test_bit(FLAG_EXT_CTRL, &chan->flags)) | |
805 | return L2CAP_EXT_HDR_SIZE - L2CAP_HDR_SIZE; | |
806 | else | |
807 | return L2CAP_ENH_HDR_SIZE - L2CAP_HDR_SIZE; | |
808 | } | |
1da177e4 | 809 | |
bb58f747 | 810 | extern int disable_ertm; |
bb58f747 GP |
811 | |
812 | int l2cap_init_sockets(void); | |
813 | void l2cap_cleanup_sockets(void); | |
814 | ||
8c1d787b | 815 | void __l2cap_connect_rsp_defer(struct l2cap_chan *chan); |
dcba0dba | 816 | int __l2cap_wait_ack(struct sock *sk); |
68983259 | 817 | |
9e4425ff GP |
818 | int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm); |
819 | int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid); | |
820 | ||
23691d75 | 821 | struct l2cap_chan *l2cap_chan_create(struct sock *sk); |
0f852724 | 822 | void l2cap_chan_close(struct l2cap_chan *chan, int reason); |
23691d75 | 823 | void l2cap_chan_destroy(struct l2cap_chan *chan); |
03a00194 GP |
824 | inline int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid, |
825 | bdaddr_t *dst); | |
5e59b791 LAD |
826 | int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len, |
827 | u32 priority); | |
e328140f | 828 | void l2cap_chan_busy(struct l2cap_chan *chan, int busy); |
d45fc423 | 829 | int l2cap_chan_check_security(struct l2cap_chan *chan); |
bb58f747 | 830 | |
1da177e4 | 831 | #endif /* __L2CAP_H */ |