Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 | 2 | BlueZ - Bluetooth protocol stack for Linux |
2d0a0346 | 3 | Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. |
1da177e4 LT |
4 | |
5 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License version 2 as | |
9 | published by the Free Software Foundation; | |
10 | ||
11 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
12 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
13 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
14 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
15 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
16 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
17 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
18 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
19 | ||
8e87d142 YH |
20 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
21 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
22 | SOFTWARE IS DISCLAIMED. |
23 | */ | |
24 | ||
25 | /* Bluetooth HCI connection handling. */ | |
26 | ||
8c520a59 | 27 | #include <linux/export.h> |
23b9ceb7 | 28 | #include <linux/debugfs.h> |
1da177e4 LT |
29 | |
30 | #include <net/bluetooth/bluetooth.h> | |
31 | #include <net/bluetooth/hci_core.h> | |
4bc58f51 | 32 | #include <net/bluetooth/l2cap.h> |
1da177e4 | 33 | |
0857dd3b | 34 | #include "hci_request.h" |
ac4b7236 | 35 | #include "smp.h" |
7024728e MH |
36 | #include "a2mp.h" |
37 | ||
2dea632f FD |
38 | struct sco_param { |
39 | u16 pkt_type; | |
40 | u16 max_latency; | |
c7da5797 | 41 | u8 retrans_effort; |
2dea632f FD |
42 | }; |
43 | ||
48e68ff5 | 44 | static const struct sco_param esco_param_cvsd[] = { |
c7da5797 JH |
45 | { EDR_ESCO_MASK & ~ESCO_2EV3, 0x000a, 0x01 }, /* S3 */ |
46 | { EDR_ESCO_MASK & ~ESCO_2EV3, 0x0007, 0x01 }, /* S2 */ | |
47 | { EDR_ESCO_MASK | ESCO_EV3, 0x0007, 0x01 }, /* S1 */ | |
48 | { EDR_ESCO_MASK | ESCO_HV3, 0xffff, 0x01 }, /* D1 */ | |
49 | { EDR_ESCO_MASK | ESCO_HV1, 0xffff, 0x01 }, /* D0 */ | |
2dea632f FD |
50 | }; |
51 | ||
48e68ff5 | 52 | static const struct sco_param sco_param_cvsd[] = { |
c7da5797 JH |
53 | { EDR_ESCO_MASK | ESCO_HV3, 0xffff, 0xff }, /* D1 */ |
54 | { EDR_ESCO_MASK | ESCO_HV1, 0xffff, 0xff }, /* D0 */ | |
48e68ff5 BT |
55 | }; |
56 | ||
565766b0 | 57 | static const struct sco_param esco_param_msbc[] = { |
c7da5797 JH |
58 | { EDR_ESCO_MASK & ~ESCO_2EV3, 0x000d, 0x02 }, /* T2 */ |
59 | { EDR_ESCO_MASK | ESCO_EV3, 0x0008, 0x02 }, /* T1 */ | |
2dea632f FD |
60 | }; |
61 | ||
f75113a2 JP |
62 | /* This function requires the caller holds hdev->lock */ |
63 | static void hci_connect_le_scan_cleanup(struct hci_conn *conn) | |
64 | { | |
65 | struct hci_conn_params *params; | |
b5c2b621 | 66 | struct hci_dev *hdev = conn->hdev; |
f75113a2 JP |
67 | struct smp_irk *irk; |
68 | bdaddr_t *bdaddr; | |
69 | u8 bdaddr_type; | |
70 | ||
71 | bdaddr = &conn->dst; | |
72 | bdaddr_type = conn->dst_type; | |
73 | ||
74 | /* Check if we need to convert to identity address */ | |
b5c2b621 | 75 | irk = hci_get_irk(hdev, bdaddr, bdaddr_type); |
f75113a2 JP |
76 | if (irk) { |
77 | bdaddr = &irk->bdaddr; | |
78 | bdaddr_type = irk->addr_type; | |
79 | } | |
80 | ||
17bc08f0 JH |
81 | params = hci_pend_le_action_lookup(&hdev->pend_le_conns, bdaddr, |
82 | bdaddr_type); | |
83 | if (!params || !params->explicit_connect) | |
f75113a2 JP |
84 | return; |
85 | ||
86 | /* The connection attempt was doing scan for new RPA, and is | |
87 | * in scan phase. If params are not associated with any other | |
88 | * autoconnect action, remove them completely. If they are, just unmark | |
89 | * them as waiting for connection, by clearing explicit_connect field. | |
90 | */ | |
9ad3e6ff JH |
91 | params->explicit_connect = false; |
92 | ||
93 | list_del_init(¶ms->action); | |
94 | ||
95 | switch (params->auto_connect) { | |
96 | case HCI_AUTO_CONN_EXPLICIT: | |
b5c2b621 | 97 | hci_conn_params_del(hdev, bdaddr, bdaddr_type); |
9ad3e6ff JH |
98 | /* return instead of break to avoid duplicate scan update */ |
99 | return; | |
100 | case HCI_AUTO_CONN_DIRECT: | |
101 | case HCI_AUTO_CONN_ALWAYS: | |
b5c2b621 | 102 | list_add(¶ms->action, &hdev->pend_le_conns); |
9ad3e6ff JH |
103 | break; |
104 | case HCI_AUTO_CONN_REPORT: | |
b5c2b621 | 105 | list_add(¶ms->action, &hdev->pend_le_reports); |
9ad3e6ff JH |
106 | break; |
107 | default: | |
108 | break; | |
168b8a25 | 109 | } |
9ad3e6ff | 110 | |
b5c2b621 | 111 | hci_update_background_scan(hdev); |
f75113a2 JP |
112 | } |
113 | ||
b958f9a3 JH |
114 | static void hci_conn_cleanup(struct hci_conn *conn) |
115 | { | |
116 | struct hci_dev *hdev = conn->hdev; | |
117 | ||
118 | if (test_bit(HCI_CONN_PARAM_REMOVAL_PEND, &conn->flags)) | |
119 | hci_conn_params_del(conn->hdev, &conn->dst, conn->dst_type); | |
120 | ||
121 | hci_chan_list_flush(conn); | |
122 | ||
123 | hci_conn_hash_del(hdev, conn); | |
124 | ||
1f8330ea SN |
125 | if (conn->type == SCO_LINK || conn->type == ESCO_LINK) { |
126 | switch (conn->setting & SCO_AIRMODE_MASK) { | |
127 | case SCO_AIRMODE_CVSD: | |
128 | case SCO_AIRMODE_TRANSP: | |
129 | if (hdev->notify) | |
130 | hdev->notify(hdev, HCI_NOTIFY_DISABLE_SCO); | |
131 | break; | |
132 | } | |
133 | } else { | |
134 | if (hdev->notify) | |
135 | hdev->notify(hdev, HCI_NOTIFY_CONN_DEL); | |
136 | } | |
b958f9a3 JH |
137 | |
138 | hci_conn_del_sysfs(conn); | |
139 | ||
140 | debugfs_remove_recursive(conn->debugfs); | |
141 | ||
142 | hci_dev_put(hdev); | |
143 | ||
144 | hci_conn_put(conn); | |
145 | } | |
146 | ||
8ce783dc | 147 | static void le_scan_cleanup(struct work_struct *work) |
f75113a2 | 148 | { |
8ce783dc JH |
149 | struct hci_conn *conn = container_of(work, struct hci_conn, |
150 | le_scan_cleanup); | |
151 | struct hci_dev *hdev = conn->hdev; | |
152 | struct hci_conn *c = NULL; | |
153 | ||
154 | BT_DBG("%s hcon %p", hdev->name, conn); | |
155 | ||
156 | hci_dev_lock(hdev); | |
157 | ||
158 | /* Check that the hci_conn is still around */ | |
159 | rcu_read_lock(); | |
160 | list_for_each_entry_rcu(c, &hdev->conn_hash.list, list) { | |
161 | if (c == conn) | |
162 | break; | |
163 | } | |
164 | rcu_read_unlock(); | |
165 | ||
166 | if (c == conn) { | |
167 | hci_connect_le_scan_cleanup(conn); | |
168 | hci_conn_cleanup(conn); | |
169 | } | |
170 | ||
171 | hci_dev_unlock(hdev); | |
172 | hci_dev_put(hdev); | |
173 | hci_conn_put(conn); | |
174 | } | |
f75113a2 | 175 | |
8ce783dc JH |
176 | static void hci_connect_le_scan_remove(struct hci_conn *conn) |
177 | { | |
178 | BT_DBG("%s hcon %p", conn->hdev->name, conn); | |
179 | ||
180 | /* We can't call hci_conn_del/hci_conn_cleanup here since that | |
181 | * could deadlock with another hci_conn_del() call that's holding | |
182 | * hci_dev_lock and doing cancel_delayed_work_sync(&conn->disc_work). | |
183 | * Instead, grab temporary extra references to the hci_dev and | |
184 | * hci_conn and perform the necessary cleanup in a separate work | |
185 | * callback. | |
b958f9a3 | 186 | */ |
8ce783dc JH |
187 | |
188 | hci_dev_hold(conn->hdev); | |
189 | hci_conn_get(conn); | |
190 | ||
0ebc1818 JH |
191 | /* Even though we hold a reference to the hdev, many other |
192 | * things might get cleaned up meanwhile, including the hdev's | |
193 | * own workqueue, so we can't use that for scheduling. | |
194 | */ | |
8ce783dc | 195 | schedule_work(&conn->le_scan_cleanup); |
f75113a2 JP |
196 | } |
197 | ||
1aef8669 | 198 | static void hci_acl_create_connection(struct hci_conn *conn) |
1da177e4 LT |
199 | { |
200 | struct hci_dev *hdev = conn->hdev; | |
201 | struct inquiry_entry *ie; | |
202 | struct hci_cp_create_conn cp; | |
203 | ||
42d2d87c | 204 | BT_DBG("hcon %p", conn); |
1da177e4 | 205 | |
89e65975 SS |
206 | /* Many controllers disallow HCI Create Connection while it is doing |
207 | * HCI Inquiry. So we cancel the Inquiry first before issuing HCI Create | |
208 | * Connection. This may cause the MGMT discovering state to become false | |
209 | * without user space's request but it is okay since the MGMT Discovery | |
210 | * APIs do not promise that discovery should be done forever. Instead, | |
211 | * the user space monitors the status of MGMT discovering and it may | |
212 | * request for discovery again when this flag becomes false. | |
213 | */ | |
214 | if (test_bit(HCI_INQUIRY, &hdev->flags)) { | |
215 | /* Put this connection to "pending" state so that it will be | |
216 | * executed after the inquiry cancel command complete event. | |
217 | */ | |
218 | conn->state = BT_CONNECT2; | |
219 | hci_send_cmd(hdev, HCI_OP_INQUIRY_CANCEL, 0, NULL); | |
220 | return; | |
221 | } | |
222 | ||
1da177e4 | 223 | conn->state = BT_CONNECT; |
a0c808b3 | 224 | conn->out = true; |
40bef302 | 225 | conn->role = HCI_ROLE_MASTER; |
1da177e4 | 226 | |
4c67bc74 MH |
227 | conn->attempt++; |
228 | ||
e4e8e37c MH |
229 | conn->link_policy = hdev->link_policy; |
230 | ||
1da177e4 LT |
231 | memset(&cp, 0, sizeof(cp)); |
232 | bacpy(&cp.bdaddr, &conn->dst); | |
233 | cp.pscan_rep_mode = 0x02; | |
234 | ||
70f23020 AE |
235 | ie = hci_inquiry_cache_lookup(hdev, &conn->dst); |
236 | if (ie) { | |
41a96212 MH |
237 | if (inquiry_entry_age(ie) <= INQUIRY_ENTRY_AGE_MAX) { |
238 | cp.pscan_rep_mode = ie->data.pscan_rep_mode; | |
239 | cp.pscan_mode = ie->data.pscan_mode; | |
240 | cp.clock_offset = ie->data.clock_offset | | |
dcf4adbf | 241 | cpu_to_le16(0x8000); |
41a96212 MH |
242 | } |
243 | ||
1da177e4 LT |
244 | memcpy(conn->dev_class, ie->data.dev_class, 3); |
245 | } | |
246 | ||
a8746417 | 247 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
1da177e4 | 248 | if (lmp_rswitch_capable(hdev) && !(hdev->link_mode & HCI_LM_MASTER)) |
b6a0dc82 | 249 | cp.role_switch = 0x01; |
1da177e4 | 250 | else |
b6a0dc82 | 251 | cp.role_switch = 0x00; |
4c67bc74 | 252 | |
a9de9248 | 253 | hci_send_cmd(hdev, HCI_OP_CREATE_CONN, sizeof(cp), &cp); |
1da177e4 LT |
254 | } |
255 | ||
e3b679d5 | 256 | int hci_disconnect(struct hci_conn *conn, __u8 reason) |
1da177e4 | 257 | { |
38b3fef1 | 258 | BT_DBG("hcon %p", conn); |
1da177e4 | 259 | |
839035a7 JH |
260 | /* When we are master of an established connection and it enters |
261 | * the disconnect timeout, then go ahead and try to read the | |
262 | * current clock offset. Processing of the result is done | |
263 | * within the event handling and hci_clock_offset_evt function. | |
264 | */ | |
88d07feb JH |
265 | if (conn->type == ACL_LINK && conn->role == HCI_ROLE_MASTER && |
266 | (conn->state == BT_CONNECTED || conn->state == BT_CONFIG)) { | |
839035a7 | 267 | struct hci_dev *hdev = conn->hdev; |
4f639ede | 268 | struct hci_cp_read_clock_offset clkoff_cp; |
839035a7 | 269 | |
4f639ede FF |
270 | clkoff_cp.handle = cpu_to_le16(conn->handle); |
271 | hci_send_cmd(hdev, HCI_OP_READ_CLOCK_OFFSET, sizeof(clkoff_cp), | |
272 | &clkoff_cp); | |
839035a7 JH |
273 | } |
274 | ||
88d07feb | 275 | return hci_abort_conn(conn, reason); |
1da177e4 LT |
276 | } |
277 | ||
57f5d0d1 | 278 | static void hci_add_sco(struct hci_conn *conn, __u16 handle) |
1da177e4 LT |
279 | { |
280 | struct hci_dev *hdev = conn->hdev; | |
281 | struct hci_cp_add_sco cp; | |
282 | ||
38b3fef1 | 283 | BT_DBG("hcon %p", conn); |
1da177e4 LT |
284 | |
285 | conn->state = BT_CONNECT; | |
a0c808b3 | 286 | conn->out = true; |
1da177e4 | 287 | |
efc7688b MH |
288 | conn->attempt++; |
289 | ||
aca3192c | 290 | cp.handle = cpu_to_le16(handle); |
a8746417 | 291 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
1da177e4 | 292 | |
a9de9248 | 293 | hci_send_cmd(hdev, HCI_OP_ADD_SCO, sizeof(cp), &cp); |
1da177e4 LT |
294 | } |
295 | ||
8b1c324c YL |
296 | static bool find_next_esco_param(struct hci_conn *conn, |
297 | const struct sco_param *esco_param, int size) | |
298 | { | |
299 | for (; conn->attempt <= size; conn->attempt++) { | |
300 | if (lmp_esco_2m_capable(conn->link) || | |
301 | (esco_param[conn->attempt - 1].pkt_type & ESCO_2EV3)) | |
302 | break; | |
303 | BT_DBG("hcon %p skipped attempt %d, eSCO 2M not supported", | |
304 | conn, conn->attempt); | |
305 | } | |
306 | ||
307 | return conn->attempt <= size; | |
308 | } | |
309 | ||
2dea632f | 310 | bool hci_setup_sync(struct hci_conn *conn, __u16 handle) |
b6a0dc82 MH |
311 | { |
312 | struct hci_dev *hdev = conn->hdev; | |
313 | struct hci_cp_setup_sync_conn cp; | |
2dea632f | 314 | const struct sco_param *param; |
b6a0dc82 | 315 | |
38b3fef1 | 316 | BT_DBG("hcon %p", conn); |
b6a0dc82 MH |
317 | |
318 | conn->state = BT_CONNECT; | |
a0c808b3 | 319 | conn->out = true; |
b6a0dc82 | 320 | |
efc7688b MH |
321 | conn->attempt++; |
322 | ||
b6a0dc82 | 323 | cp.handle = cpu_to_le16(handle); |
b6a0dc82 | 324 | |
dcf4adbf JP |
325 | cp.tx_bandwidth = cpu_to_le32(0x00001f40); |
326 | cp.rx_bandwidth = cpu_to_le32(0x00001f40); | |
10c62ddc FD |
327 | cp.voice_setting = cpu_to_le16(conn->setting); |
328 | ||
329 | switch (conn->setting & SCO_AIRMODE_MASK) { | |
330 | case SCO_AIRMODE_TRANSP: | |
8b1c324c YL |
331 | if (!find_next_esco_param(conn, esco_param_msbc, |
332 | ARRAY_SIZE(esco_param_msbc))) | |
2dea632f | 333 | return false; |
565766b0 | 334 | param = &esco_param_msbc[conn->attempt - 1]; |
10c62ddc FD |
335 | break; |
336 | case SCO_AIRMODE_CVSD: | |
48e68ff5 | 337 | if (lmp_esco_capable(conn->link)) { |
8b1c324c YL |
338 | if (!find_next_esco_param(conn, esco_param_cvsd, |
339 | ARRAY_SIZE(esco_param_cvsd))) | |
48e68ff5 | 340 | return false; |
48e68ff5 BT |
341 | param = &esco_param_cvsd[conn->attempt - 1]; |
342 | } else { | |
343 | if (conn->attempt > ARRAY_SIZE(sco_param_cvsd)) | |
344 | return false; | |
48e68ff5 BT |
345 | param = &sco_param_cvsd[conn->attempt - 1]; |
346 | } | |
10c62ddc | 347 | break; |
2dea632f FD |
348 | default: |
349 | return false; | |
10c62ddc | 350 | } |
b6a0dc82 | 351 | |
c7da5797 | 352 | cp.retrans_effort = param->retrans_effort; |
2dea632f FD |
353 | cp.pkt_type = __cpu_to_le16(param->pkt_type); |
354 | cp.max_latency = __cpu_to_le16(param->max_latency); | |
355 | ||
356 | if (hci_send_cmd(hdev, HCI_OP_SETUP_SYNC_CONN, sizeof(cp), &cp) < 0) | |
357 | return false; | |
358 | ||
359 | return true; | |
b6a0dc82 MH |
360 | } |
361 | ||
7d6ca693 JH |
362 | u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, |
363 | u16 to_multiplier) | |
2ce603eb | 364 | { |
2ce603eb | 365 | struct hci_dev *hdev = conn->hdev; |
f044eb05 MH |
366 | struct hci_conn_params *params; |
367 | struct hci_cp_le_conn_update cp; | |
2ce603eb | 368 | |
f044eb05 | 369 | hci_dev_lock(hdev); |
2ce603eb | 370 | |
f044eb05 MH |
371 | params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); |
372 | if (params) { | |
373 | params->conn_min_interval = min; | |
374 | params->conn_max_interval = max; | |
375 | params->conn_latency = latency; | |
376 | params->supervision_timeout = to_multiplier; | |
377 | } | |
378 | ||
379 | hci_dev_unlock(hdev); | |
380 | ||
381 | memset(&cp, 0, sizeof(cp)); | |
2ce603eb CT |
382 | cp.handle = cpu_to_le16(conn->handle); |
383 | cp.conn_interval_min = cpu_to_le16(min); | |
384 | cp.conn_interval_max = cpu_to_le16(max); | |
385 | cp.conn_latency = cpu_to_le16(latency); | |
386 | cp.supervision_timeout = cpu_to_le16(to_multiplier); | |
dcf4adbf JP |
387 | cp.min_ce_len = cpu_to_le16(0x0000); |
388 | cp.max_ce_len = cpu_to_le16(0x0000); | |
2ce603eb CT |
389 | |
390 | hci_send_cmd(hdev, HCI_OP_LE_CONN_UPDATE, sizeof(cp), &cp); | |
7d6ca693 JH |
391 | |
392 | if (params) | |
393 | return 0x01; | |
394 | ||
395 | return 0x00; | |
2ce603eb | 396 | } |
2ce603eb | 397 | |
fe39c7b2 | 398 | void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, |
8b76ce34 | 399 | __u8 ltk[16], __u8 key_size) |
a7a595f6 VCG |
400 | { |
401 | struct hci_dev *hdev = conn->hdev; | |
402 | struct hci_cp_le_start_enc cp; | |
403 | ||
38b3fef1 | 404 | BT_DBG("hcon %p", conn); |
a7a595f6 VCG |
405 | |
406 | memset(&cp, 0, sizeof(cp)); | |
407 | ||
408 | cp.handle = cpu_to_le16(conn->handle); | |
fe39c7b2 | 409 | cp.rand = rand; |
a7a595f6 | 410 | cp.ediv = ediv; |
8b76ce34 | 411 | memcpy(cp.ltk, ltk, key_size); |
a7a595f6 VCG |
412 | |
413 | hci_send_cmd(hdev, HCI_OP_LE_START_ENC, sizeof(cp), &cp); | |
414 | } | |
a7a595f6 | 415 | |
e73439d8 MH |
416 | /* Device _must_ be locked */ |
417 | void hci_sco_setup(struct hci_conn *conn, __u8 status) | |
418 | { | |
419 | struct hci_conn *sco = conn->link; | |
420 | ||
e73439d8 MH |
421 | if (!sco) |
422 | return; | |
423 | ||
38b3fef1 AE |
424 | BT_DBG("hcon %p", conn); |
425 | ||
e73439d8 MH |
426 | if (!status) { |
427 | if (lmp_esco_capable(conn->hdev)) | |
428 | hci_setup_sync(sco, conn->handle); | |
429 | else | |
430 | hci_add_sco(sco, conn->handle); | |
431 | } else { | |
539c496d | 432 | hci_connect_cfm(sco, status); |
e73439d8 MH |
433 | hci_conn_del(sco); |
434 | } | |
435 | } | |
436 | ||
19c40e3b | 437 | static void hci_conn_timeout(struct work_struct *work) |
1da177e4 | 438 | { |
19c40e3b | 439 | struct hci_conn *conn = container_of(work, struct hci_conn, |
5974e4c4 | 440 | disc_work.work); |
1d56dc4f | 441 | int refcnt = atomic_read(&conn->refcnt); |
1da177e4 | 442 | |
38b3fef1 | 443 | BT_DBG("hcon %p state %s", conn, state_to_string(conn->state)); |
1da177e4 | 444 | |
1d56dc4f LR |
445 | WARN_ON(refcnt < 0); |
446 | ||
447 | /* FIXME: It was observed that in pairing failed scenario, refcnt | |
448 | * drops below 0. Probably this is because l2cap_conn_del calls | |
449 | * l2cap_chan_del for each channel, and inside l2cap_chan_del conn is | |
450 | * dropped. After that loop hci_chan_del is called which also drops | |
451 | * conn. For now make sure that ACL is alive if refcnt is higher then 0, | |
452 | * otherwise drop it. | |
453 | */ | |
454 | if (refcnt > 0) | |
1da177e4 LT |
455 | return; |
456 | ||
89e0ccc8 JH |
457 | /* LE connections in scanning state need special handling */ |
458 | if (conn->state == BT_CONNECT && conn->type == LE_LINK && | |
459 | test_bit(HCI_CONN_SCANNING, &conn->flags)) { | |
460 | hci_connect_le_scan_remove(conn); | |
461 | return; | |
6ac59344 | 462 | } |
89e0ccc8 JH |
463 | |
464 | hci_abort_conn(conn, hci_proto_disconn_ind(conn)); | |
1da177e4 LT |
465 | } |
466 | ||
416dc94b | 467 | /* Enter sniff mode */ |
a74a84f6 | 468 | static void hci_conn_idle(struct work_struct *work) |
416dc94b | 469 | { |
a74a84f6 JH |
470 | struct hci_conn *conn = container_of(work, struct hci_conn, |
471 | idle_work.work); | |
416dc94b GP |
472 | struct hci_dev *hdev = conn->hdev; |
473 | ||
38b3fef1 | 474 | BT_DBG("hcon %p mode %d", conn, conn->mode); |
416dc94b | 475 | |
416dc94b GP |
476 | if (!lmp_sniff_capable(hdev) || !lmp_sniff_capable(conn)) |
477 | return; | |
478 | ||
479 | if (conn->mode != HCI_CM_ACTIVE || !(conn->link_policy & HCI_LP_SNIFF)) | |
480 | return; | |
481 | ||
482 | if (lmp_sniffsubr_capable(hdev) && lmp_sniffsubr_capable(conn)) { | |
483 | struct hci_cp_sniff_subrate cp; | |
484 | cp.handle = cpu_to_le16(conn->handle); | |
dcf4adbf JP |
485 | cp.max_latency = cpu_to_le16(0); |
486 | cp.min_remote_timeout = cpu_to_le16(0); | |
487 | cp.min_local_timeout = cpu_to_le16(0); | |
416dc94b GP |
488 | hci_send_cmd(hdev, HCI_OP_SNIFF_SUBRATE, sizeof(cp), &cp); |
489 | } | |
490 | ||
51a8efd7 | 491 | if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags)) { |
416dc94b GP |
492 | struct hci_cp_sniff_mode cp; |
493 | cp.handle = cpu_to_le16(conn->handle); | |
494 | cp.max_interval = cpu_to_le16(hdev->sniff_max_interval); | |
495 | cp.min_interval = cpu_to_le16(hdev->sniff_min_interval); | |
dcf4adbf JP |
496 | cp.attempt = cpu_to_le16(4); |
497 | cp.timeout = cpu_to_le16(1); | |
416dc94b GP |
498 | hci_send_cmd(hdev, HCI_OP_SNIFF_MODE, sizeof(cp), &cp); |
499 | } | |
500 | } | |
501 | ||
7bc18d9d | 502 | static void hci_conn_auto_accept(struct work_struct *work) |
9f61656a | 503 | { |
7bc18d9d JH |
504 | struct hci_conn *conn = container_of(work, struct hci_conn, |
505 | auto_accept_work.work); | |
9f61656a | 506 | |
7bc18d9d | 507 | hci_send_cmd(conn->hdev, HCI_OP_USER_CONFIRM_REPLY, sizeof(conn->dst), |
5974e4c4 | 508 | &conn->dst); |
9f61656a JH |
509 | } |
510 | ||
c3bed4de SN |
511 | static void le_disable_advertising(struct hci_dev *hdev) |
512 | { | |
513 | if (ext_adv_capable(hdev)) { | |
514 | struct hci_cp_le_set_ext_adv_enable cp; | |
515 | ||
516 | cp.enable = 0x00; | |
517 | cp.num_of_sets = 0x00; | |
518 | ||
519 | hci_send_cmd(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE, sizeof(cp), | |
520 | &cp); | |
521 | } else { | |
522 | u8 enable = 0x00; | |
523 | hci_send_cmd(hdev, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), | |
524 | &enable); | |
525 | } | |
526 | } | |
527 | ||
9489eca4 JH |
528 | static void le_conn_timeout(struct work_struct *work) |
529 | { | |
530 | struct hci_conn *conn = container_of(work, struct hci_conn, | |
531 | le_conn_timeout.work); | |
3c857757 | 532 | struct hci_dev *hdev = conn->hdev; |
9489eca4 JH |
533 | |
534 | BT_DBG(""); | |
535 | ||
3c857757 JH |
536 | /* We could end up here due to having done directed advertising, |
537 | * so clean up the state if necessary. This should however only | |
538 | * happen with broken hardware or if low duty cycle was used | |
539 | * (which doesn't have a timeout of its own). | |
540 | */ | |
0b1db38c | 541 | if (conn->role == HCI_ROLE_SLAVE) { |
c3bed4de SN |
542 | /* Disable LE Advertising */ |
543 | le_disable_advertising(hdev); | |
3c857757 JH |
544 | hci_le_conn_failed(conn, HCI_ERROR_ADVERTISING_TIMEOUT); |
545 | return; | |
546 | } | |
547 | ||
89e0ccc8 | 548 | hci_abort_conn(conn, HCI_ERROR_REMOTE_USER_TERM); |
9489eca4 JH |
549 | } |
550 | ||
a5c4e309 JH |
551 | struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, |
552 | u8 role) | |
1da177e4 LT |
553 | { |
554 | struct hci_conn *conn; | |
555 | ||
6ed93dc6 | 556 | BT_DBG("%s dst %pMR", hdev->name, dst); |
1da177e4 | 557 | |
27f70f3e | 558 | conn = kzalloc(sizeof(*conn), GFP_KERNEL); |
04837f64 | 559 | if (!conn) |
1da177e4 | 560 | return NULL; |
1da177e4 LT |
561 | |
562 | bacpy(&conn->dst, dst); | |
662e8820 | 563 | bacpy(&conn->src, &hdev->bdaddr); |
a8746417 MH |
564 | conn->hdev = hdev; |
565 | conn->type = type; | |
a5c4e309 | 566 | conn->role = role; |
a8746417 MH |
567 | conn->mode = HCI_CM_ACTIVE; |
568 | conn->state = BT_OPEN; | |
93f19c9f | 569 | conn->auth_type = HCI_AT_GENERAL_BONDING; |
17fa4b9d | 570 | conn->io_capability = hdev->io_capability; |
a9583556 | 571 | conn->remote_auth = 0xff; |
13d39315 | 572 | conn->key_type = 0xff; |
ebf86aa3 | 573 | conn->rssi = HCI_RSSI_INVALID; |
5a134fae | 574 | conn->tx_power = HCI_TX_POWER_INVALID; |
d0455ed9 | 575 | conn->max_tx_power = HCI_TX_POWER_INVALID; |
1da177e4 | 576 | |
58a681ef | 577 | set_bit(HCI_CONN_POWER_SAVE, &conn->flags); |
052b30b0 | 578 | conn->disc_timeout = HCI_DISCONN_TIMEOUT; |
04837f64 | 579 | |
302975cb SRK |
580 | /* Set Default Authenticated payload timeout to 30s */ |
581 | conn->auth_payload_timeout = DEFAULT_AUTH_PAYLOAD_TIMEOUT; | |
582 | ||
a5c4e309 JH |
583 | if (conn->role == HCI_ROLE_MASTER) |
584 | conn->out = true; | |
585 | ||
a8746417 MH |
586 | switch (type) { |
587 | case ACL_LINK: | |
588 | conn->pkt_type = hdev->pkt_type & ACL_PTYPE_MASK; | |
589 | break; | |
9c84d1da JH |
590 | case LE_LINK: |
591 | /* conn->src should reflect the local identity address */ | |
592 | hci_copy_identity_address(hdev, &conn->src, &conn->src_type); | |
593 | break; | |
a8746417 MH |
594 | case SCO_LINK: |
595 | if (lmp_esco_capable(hdev)) | |
efc7688b MH |
596 | conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | |
597 | (hdev->esco_type & EDR_ESCO_MASK); | |
a8746417 MH |
598 | else |
599 | conn->pkt_type = hdev->pkt_type & SCO_PTYPE_MASK; | |
600 | break; | |
601 | case ESCO_LINK: | |
efc7688b | 602 | conn->pkt_type = hdev->esco_type & ~EDR_ESCO_MASK; |
a8746417 MH |
603 | break; |
604 | } | |
605 | ||
1da177e4 | 606 | skb_queue_head_init(&conn->data_q); |
04837f64 | 607 | |
70c1f20b | 608 | INIT_LIST_HEAD(&conn->chan_list); |
73d80deb | 609 | |
19c40e3b | 610 | INIT_DELAYED_WORK(&conn->disc_work, hci_conn_timeout); |
7bc18d9d | 611 | INIT_DELAYED_WORK(&conn->auto_accept_work, hci_conn_auto_accept); |
a74a84f6 | 612 | INIT_DELAYED_WORK(&conn->idle_work, hci_conn_idle); |
9489eca4 | 613 | INIT_DELAYED_WORK(&conn->le_conn_timeout, le_conn_timeout); |
8ce783dc | 614 | INIT_WORK(&conn->le_scan_cleanup, le_scan_cleanup); |
1da177e4 LT |
615 | |
616 | atomic_set(&conn->refcnt, 0); | |
617 | ||
618 | hci_dev_hold(hdev); | |
619 | ||
1da177e4 | 620 | hci_conn_hash_add(hdev, conn); |
1f8330ea SN |
621 | |
622 | /* The SCO and eSCO connections will only be notified when their | |
623 | * setup has been completed. This is different to ACL links which | |
624 | * can be notified right away. | |
625 | */ | |
626 | if (conn->type != SCO_LINK && conn->type != ESCO_LINK) { | |
627 | if (hdev->notify) | |
628 | hdev->notify(hdev, HCI_NOTIFY_CONN_ADD); | |
629 | } | |
1da177e4 | 630 | |
a67e899c MH |
631 | hci_conn_init_sysfs(conn); |
632 | ||
1da177e4 LT |
633 | return conn; |
634 | } | |
635 | ||
636 | int hci_conn_del(struct hci_conn *conn) | |
637 | { | |
638 | struct hci_dev *hdev = conn->hdev; | |
639 | ||
38b3fef1 | 640 | BT_DBG("%s hcon %p handle %d", hdev->name, conn, conn->handle); |
1da177e4 | 641 | |
19c40e3b | 642 | cancel_delayed_work_sync(&conn->disc_work); |
7bc18d9d | 643 | cancel_delayed_work_sync(&conn->auto_accept_work); |
a74a84f6 | 644 | cancel_delayed_work_sync(&conn->idle_work); |
9f61656a | 645 | |
5b7f9909 | 646 | if (conn->type == ACL_LINK) { |
1da177e4 LT |
647 | struct hci_conn *sco = conn->link; |
648 | if (sco) | |
649 | sco->link = NULL; | |
650 | ||
651 | /* Unacked frames */ | |
652 | hdev->acl_cnt += conn->sent; | |
6ed58ec5 | 653 | } else if (conn->type == LE_LINK) { |
980ffc0a | 654 | cancel_delayed_work(&conn->le_conn_timeout); |
9489eca4 | 655 | |
6ed58ec5 VT |
656 | if (hdev->le_pkts) |
657 | hdev->le_cnt += conn->sent; | |
658 | else | |
659 | hdev->acl_cnt += conn->sent; | |
5b7f9909 MH |
660 | } else { |
661 | struct hci_conn *acl = conn->link; | |
662 | if (acl) { | |
663 | acl->link = NULL; | |
76a68ba0 | 664 | hci_conn_drop(acl); |
5b7f9909 | 665 | } |
1da177e4 LT |
666 | } |
667 | ||
9740e49d AE |
668 | if (conn->amp_mgr) |
669 | amp_mgr_put(conn->amp_mgr); | |
670 | ||
1da177e4 | 671 | skb_queue_purge(&conn->data_q); |
1da177e4 | 672 | |
b958f9a3 JH |
673 | /* Remove the connection from the list and cleanup its remaining |
674 | * state. This is a separate function since for some cases like | |
675 | * BT_CONNECT_SCAN we *only* want the cleanup part without the | |
676 | * rest of hci_conn_del. | |
677 | */ | |
678 | hci_conn_cleanup(conn); | |
163f4dab | 679 | |
1da177e4 LT |
680 | return 0; |
681 | } | |
682 | ||
39385cb5 | 683 | struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, uint8_t src_type) |
1da177e4 LT |
684 | { |
685 | int use_src = bacmp(src, BDADDR_ANY); | |
8035ded4 | 686 | struct hci_dev *hdev = NULL, *d; |
1da177e4 | 687 | |
6ed93dc6 | 688 | BT_DBG("%pMR -> %pMR", src, dst); |
1da177e4 | 689 | |
f20d09d5 | 690 | read_lock(&hci_dev_list_lock); |
1da177e4 | 691 | |
8035ded4 | 692 | list_for_each_entry(d, &hci_dev_list, list) { |
8fc9ced3 | 693 | if (!test_bit(HCI_UP, &d->flags) || |
d7a5a11d | 694 | hci_dev_test_flag(d, HCI_USER_CHANNEL) || |
ca8bee5d | 695 | d->dev_type != HCI_PRIMARY) |
1da177e4 LT |
696 | continue; |
697 | ||
8e87d142 | 698 | /* Simple routing: |
1da177e4 LT |
699 | * No source address - find interface with bdaddr != dst |
700 | * Source address - find interface with bdaddr == src | |
701 | */ | |
702 | ||
703 | if (use_src) { | |
39385cb5 JH |
704 | bdaddr_t id_addr; |
705 | u8 id_addr_type; | |
706 | ||
707 | if (src_type == BDADDR_BREDR) { | |
708 | if (!lmp_bredr_capable(d)) | |
709 | continue; | |
710 | bacpy(&id_addr, &d->bdaddr); | |
711 | id_addr_type = BDADDR_BREDR; | |
712 | } else { | |
713 | if (!lmp_le_capable(d)) | |
714 | continue; | |
715 | ||
716 | hci_copy_identity_address(d, &id_addr, | |
717 | &id_addr_type); | |
718 | ||
719 | /* Convert from HCI to three-value type */ | |
720 | if (id_addr_type == ADDR_LE_DEV_PUBLIC) | |
721 | id_addr_type = BDADDR_LE_PUBLIC; | |
722 | else | |
723 | id_addr_type = BDADDR_LE_RANDOM; | |
724 | } | |
725 | ||
726 | if (!bacmp(&id_addr, src) && id_addr_type == src_type) { | |
1da177e4 LT |
727 | hdev = d; break; |
728 | } | |
729 | } else { | |
730 | if (bacmp(&d->bdaddr, dst)) { | |
731 | hdev = d; break; | |
732 | } | |
733 | } | |
734 | } | |
735 | ||
736 | if (hdev) | |
737 | hdev = hci_dev_hold(hdev); | |
738 | ||
f20d09d5 | 739 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
740 | return hdev; |
741 | } | |
742 | EXPORT_SYMBOL(hci_get_route); | |
743 | ||
9bb3c01f | 744 | /* This function requires the caller holds hdev->lock */ |
06c053fb | 745 | void hci_le_conn_failed(struct hci_conn *conn, u8 status) |
9bb3c01f AG |
746 | { |
747 | struct hci_dev *hdev = conn->hdev; | |
f161dd41 JH |
748 | struct hci_conn_params *params; |
749 | ||
750 | params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, | |
751 | conn->dst_type); | |
752 | if (params && params->conn) { | |
753 | hci_conn_drop(params->conn); | |
f8aaf9b6 | 754 | hci_conn_put(params->conn); |
f161dd41 JH |
755 | params->conn = NULL; |
756 | } | |
9bb3c01f AG |
757 | |
758 | conn->state = BT_CLOSED; | |
759 | ||
acb9f911 JH |
760 | /* If the status indicates successful cancellation of |
761 | * the attempt (i.e. Unkown Connection Id) there's no point of | |
762 | * notifying failure since we'll go back to keep trying to | |
763 | * connect. The only exception is explicit connect requests | |
764 | * where a timeout + cancel does indicate an actual failure. | |
765 | */ | |
766 | if (status != HCI_ERROR_UNKNOWN_CONN_ID || | |
767 | (params && params->explicit_connect)) | |
768 | mgmt_connect_failed(hdev, &conn->dst, conn->type, | |
769 | conn->dst_type, status); | |
9bb3c01f | 770 | |
539c496d | 771 | hci_connect_cfm(conn, status); |
9bb3c01f AG |
772 | |
773 | hci_conn_del(conn); | |
a4790dbd AG |
774 | |
775 | /* Since we may have temporarily stopped the background scanning in | |
776 | * favor of connection establishment, we should restart it. | |
777 | */ | |
778 | hci_update_background_scan(hdev); | |
3c857757 JH |
779 | |
780 | /* Re-enable advertising in case this was a failed connection | |
781 | * attempt as a peripheral. | |
782 | */ | |
f2252570 | 783 | hci_req_reenable_advertising(hdev); |
9bb3c01f AG |
784 | } |
785 | ||
1904a853 | 786 | static void create_le_conn_complete(struct hci_dev *hdev, u8 status, u16 opcode) |
1d399ae5 AG |
787 | { |
788 | struct hci_conn *conn; | |
789 | ||
28a667c9 JP |
790 | hci_dev_lock(hdev); |
791 | ||
792 | conn = hci_lookup_le_connect(hdev); | |
793 | ||
2943d8ed DW |
794 | if (hdev->adv_instance_cnt) |
795 | hci_req_resume_adv_instances(hdev); | |
796 | ||
28a667c9 JP |
797 | if (!status) { |
798 | hci_connect_le_scan_cleanup(conn); | |
799 | goto done; | |
800 | } | |
1d399ae5 | 801 | |
2064ee33 MH |
802 | bt_dev_err(hdev, "request failed to create LE connection: " |
803 | "status 0x%2.2x", status); | |
1d399ae5 | 804 | |
1d399ae5 AG |
805 | if (!conn) |
806 | goto done; | |
807 | ||
06c053fb | 808 | hci_le_conn_failed(conn, status); |
1d399ae5 AG |
809 | |
810 | done: | |
811 | hci_dev_unlock(hdev); | |
812 | } | |
813 | ||
82a37ade JH |
814 | static bool conn_use_rpa(struct hci_conn *conn) |
815 | { | |
816 | struct hci_dev *hdev = conn->hdev; | |
817 | ||
818 | return hci_dev_test_flag(hdev, HCI_PRIVACY); | |
819 | } | |
820 | ||
4e6e99e9 JK |
821 | static void set_ext_conn_params(struct hci_conn *conn, |
822 | struct hci_cp_le_ext_conn_param *p) | |
823 | { | |
824 | struct hci_dev *hdev = conn->hdev; | |
825 | ||
826 | memset(p, 0, sizeof(*p)); | |
827 | ||
10873f99 AM |
828 | p->scan_interval = cpu_to_le16(hdev->le_scan_int_connect); |
829 | p->scan_window = cpu_to_le16(hdev->le_scan_window_connect); | |
4e6e99e9 JK |
830 | p->conn_interval_min = cpu_to_le16(conn->le_conn_min_interval); |
831 | p->conn_interval_max = cpu_to_le16(conn->le_conn_max_interval); | |
832 | p->conn_latency = cpu_to_le16(conn->le_conn_latency); | |
833 | p->supervision_timeout = cpu_to_le16(conn->le_supv_timeout); | |
834 | p->min_ce_len = cpu_to_le16(0x0000); | |
835 | p->max_ce_len = cpu_to_le16(0x0000); | |
836 | } | |
837 | ||
2acf3d90 | 838 | static void hci_req_add_le_create_conn(struct hci_request *req, |
082f2300 SJ |
839 | struct hci_conn *conn, |
840 | bdaddr_t *direct_rpa) | |
2acf3d90 | 841 | { |
2acf3d90 AG |
842 | struct hci_dev *hdev = conn->hdev; |
843 | u8 own_addr_type; | |
844 | ||
082f2300 SJ |
845 | /* If direct address was provided we use it instead of current |
846 | * address. | |
2acf3d90 | 847 | */ |
082f2300 SJ |
848 | if (direct_rpa) { |
849 | if (bacmp(&req->hdev->random_addr, direct_rpa)) | |
850 | hci_req_add(req, HCI_OP_LE_SET_RANDOM_ADDR, 6, | |
851 | direct_rpa); | |
852 | ||
853 | /* direct address is always RPA */ | |
854 | own_addr_type = ADDR_LE_DEV_RANDOM; | |
855 | } else { | |
856 | /* Update random address, but set require_privacy to false so | |
857 | * that we never connect with an non-resolvable address. | |
858 | */ | |
859 | if (hci_update_random_address(req, false, conn_use_rpa(conn), | |
860 | &own_addr_type)) | |
861 | return; | |
862 | } | |
2acf3d90 | 863 | |
4d94f95d JK |
864 | if (use_ext_conn(hdev)) { |
865 | struct hci_cp_le_ext_create_conn *cp; | |
866 | struct hci_cp_le_ext_conn_param *p; | |
4e6e99e9 JK |
867 | u8 data[sizeof(*cp) + sizeof(*p) * 3]; |
868 | u32 plen; | |
eec7a01d | 869 | |
4d94f95d JK |
870 | cp = (void *) data; |
871 | p = (void *) cp->data; | |
872 | ||
873 | memset(cp, 0, sizeof(*cp)); | |
874 | ||
875 | bacpy(&cp->peer_addr, &conn->dst); | |
876 | cp->peer_addr_type = conn->dst_type; | |
877 | cp->own_addr_type = own_addr_type; | |
4d94f95d | 878 | |
4e6e99e9 | 879 | plen = sizeof(*cp); |
4d94f95d | 880 | |
4e6e99e9 JK |
881 | if (scan_1m(hdev)) { |
882 | cp->phys |= LE_SCAN_PHY_1M; | |
883 | set_ext_conn_params(conn, p); | |
884 | ||
885 | p++; | |
886 | plen += sizeof(*p); | |
887 | } | |
888 | ||
889 | if (scan_2m(hdev)) { | |
890 | cp->phys |= LE_SCAN_PHY_2M; | |
891 | set_ext_conn_params(conn, p); | |
4d94f95d | 892 | |
4e6e99e9 JK |
893 | p++; |
894 | plen += sizeof(*p); | |
895 | } | |
896 | ||
897 | if (scan_coded(hdev)) { | |
898 | cp->phys |= LE_SCAN_PHY_CODED; | |
899 | set_ext_conn_params(conn, p); | |
900 | ||
901 | plen += sizeof(*p); | |
902 | } | |
4d94f95d | 903 | |
4e6e99e9 | 904 | hci_req_add(req, HCI_OP_LE_EXT_CREATE_CONN, plen, data); |
4d94f95d JK |
905 | |
906 | } else { | |
907 | struct hci_cp_le_create_conn cp; | |
908 | ||
909 | memset(&cp, 0, sizeof(cp)); | |
910 | ||
10873f99 AM |
911 | cp.scan_interval = cpu_to_le16(hdev->le_scan_int_connect); |
912 | cp.scan_window = cpu_to_le16(hdev->le_scan_window_connect); | |
4d94f95d JK |
913 | |
914 | bacpy(&cp.peer_addr, &conn->dst); | |
915 | cp.peer_addr_type = conn->dst_type; | |
916 | cp.own_address_type = own_addr_type; | |
917 | cp.conn_interval_min = cpu_to_le16(conn->le_conn_min_interval); | |
918 | cp.conn_interval_max = cpu_to_le16(conn->le_conn_max_interval); | |
919 | cp.conn_latency = cpu_to_le16(conn->le_conn_latency); | |
920 | cp.supervision_timeout = cpu_to_le16(conn->le_supv_timeout); | |
921 | cp.min_ce_len = cpu_to_le16(0x0000); | |
922 | cp.max_ce_len = cpu_to_le16(0x0000); | |
923 | ||
924 | hci_req_add(req, HCI_OP_LE_CREATE_CONN, sizeof(cp), &cp); | |
925 | } | |
b46e0030 JH |
926 | |
927 | conn->state = BT_CONNECT; | |
28a667c9 | 928 | clear_bit(HCI_CONN_SCANNING, &conn->flags); |
2acf3d90 AG |
929 | } |
930 | ||
3c857757 JH |
931 | static void hci_req_directed_advertising(struct hci_request *req, |
932 | struct hci_conn *conn) | |
933 | { | |
934 | struct hci_dev *hdev = req->hdev; | |
3c857757 JH |
935 | u8 own_addr_type; |
936 | u8 enable; | |
937 | ||
075e40b7 JK |
938 | if (ext_adv_capable(hdev)) { |
939 | struct hci_cp_le_set_ext_adv_params cp; | |
a73c046a JK |
940 | bdaddr_t random_addr; |
941 | ||
942 | /* Set require_privacy to false so that the remote device has a | |
943 | * chance of identifying us. | |
944 | */ | |
945 | if (hci_get_random_address(hdev, false, conn_use_rpa(conn), NULL, | |
946 | &own_addr_type, &random_addr) < 0) | |
947 | return; | |
3c857757 | 948 | |
075e40b7 | 949 | memset(&cp, 0, sizeof(cp)); |
3c857757 | 950 | |
075e40b7 JK |
951 | cp.evt_properties = cpu_to_le16(LE_LEGACY_ADV_DIRECT_IND); |
952 | cp.own_addr_type = own_addr_type; | |
953 | cp.channel_map = hdev->le_adv_channel_map; | |
954 | cp.tx_power = HCI_TX_POWER_INVALID; | |
955 | cp.primary_phy = HCI_ADV_PHY_1M; | |
956 | cp.secondary_phy = HCI_ADV_PHY_1M; | |
957 | cp.handle = 0; /* Use instance 0 for directed adv */ | |
958 | cp.own_addr_type = own_addr_type; | |
959 | cp.peer_addr_type = conn->dst_type; | |
960 | bacpy(&cp.peer_addr, &conn->dst); | |
961 | ||
a9e45698 SN |
962 | /* As per Core Spec 5.2 Vol 2, PART E, Sec 7.8.53, for |
963 | * advertising_event_property LE_LEGACY_ADV_DIRECT_IND | |
964 | * does not supports advertising data when the advertising set already | |
965 | * contains some, the controller shall return erroc code 'Invalid | |
966 | * HCI Command Parameters(0x12). | |
967 | * So it is required to remove adv set for handle 0x00. since we use | |
968 | * instance 0 for directed adv. | |
969 | */ | |
37adf701 | 970 | __hci_req_remove_ext_adv_instance(req, cp.handle); |
a9e45698 | 971 | |
075e40b7 JK |
972 | hci_req_add(req, HCI_OP_LE_SET_EXT_ADV_PARAMS, sizeof(cp), &cp); |
973 | ||
a73c046a JK |
974 | if (own_addr_type == ADDR_LE_DEV_RANDOM && |
975 | bacmp(&random_addr, BDADDR_ANY) && | |
976 | bacmp(&random_addr, &hdev->random_addr)) { | |
977 | struct hci_cp_le_set_adv_set_rand_addr cp; | |
978 | ||
979 | memset(&cp, 0, sizeof(cp)); | |
980 | ||
981 | cp.handle = 0; | |
982 | bacpy(&cp.bdaddr, &random_addr); | |
983 | ||
984 | hci_req_add(req, | |
985 | HCI_OP_LE_SET_ADV_SET_RAND_ADDR, | |
986 | sizeof(cp), &cp); | |
987 | } | |
988 | ||
1d0fac2c | 989 | __hci_req_enable_ext_advertising(req, 0x00); |
075e40b7 JK |
990 | } else { |
991 | struct hci_cp_le_set_adv_param cp; | |
3c857757 | 992 | |
075e40b7 JK |
993 | /* Clear the HCI_LE_ADV bit temporarily so that the |
994 | * hci_update_random_address knows that it's safe to go ahead | |
995 | * and write a new random address. The flag will be set back on | |
996 | * as soon as the SET_ADV_ENABLE HCI command completes. | |
997 | */ | |
998 | hci_dev_clear_flag(hdev, HCI_LE_ADV); | |
999 | ||
1000 | /* Set require_privacy to false so that the remote device has a | |
1001 | * chance of identifying us. | |
1002 | */ | |
1003 | if (hci_update_random_address(req, false, conn_use_rpa(conn), | |
1004 | &own_addr_type) < 0) | |
1005 | return; | |
3c857757 | 1006 | |
075e40b7 | 1007 | memset(&cp, 0, sizeof(cp)); |
4c371bb9 SJ |
1008 | |
1009 | /* Some controllers might reject command if intervals are not | |
1010 | * within range for undirected advertising. | |
1011 | * BCM20702A0 is known to be affected by this. | |
1012 | */ | |
1013 | cp.min_interval = cpu_to_le16(0x0020); | |
1014 | cp.max_interval = cpu_to_le16(0x0020); | |
1015 | ||
075e40b7 JK |
1016 | cp.type = LE_ADV_DIRECT_IND; |
1017 | cp.own_address_type = own_addr_type; | |
1018 | cp.direct_addr_type = conn->dst_type; | |
1019 | bacpy(&cp.direct_addr, &conn->dst); | |
1020 | cp.channel_map = hdev->le_adv_channel_map; | |
1021 | ||
1022 | hci_req_add(req, HCI_OP_LE_SET_ADV_PARAM, sizeof(cp), &cp); | |
1023 | ||
1024 | enable = 0x01; | |
1025 | hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), | |
1026 | &enable); | |
1027 | } | |
3c857757 JH |
1028 | |
1029 | conn->state = BT_CONNECT; | |
1030 | } | |
1031 | ||
04a6c589 | 1032 | struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, |
cdd6275e | 1033 | u8 dst_type, u8 sec_level, u16 conn_timeout, |
082f2300 | 1034 | u8 role, bdaddr_t *direct_rpa) |
1da177e4 | 1035 | { |
4292f1f3 | 1036 | struct hci_conn_params *params; |
e2caced4 | 1037 | struct hci_conn *conn; |
1ebfcc1f | 1038 | struct smp_irk *irk; |
2acf3d90 | 1039 | struct hci_request req; |
1d399ae5 | 1040 | int err; |
1da177e4 | 1041 | |
5c49bcce SN |
1042 | /* This ensures that during disable le_scan address resolution |
1043 | * will not be disabled if it is followed by le_create_conn | |
1044 | */ | |
1045 | bool rpa_le_conn = true; | |
1046 | ||
152d386e | 1047 | /* Let's make sure that le is enabled.*/ |
d7a5a11d | 1048 | if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { |
152d386e LR |
1049 | if (lmp_le_capable(hdev)) |
1050 | return ERR_PTR(-ECONNREFUSED); | |
1051 | ||
1052 | return ERR_PTR(-EOPNOTSUPP); | |
1053 | } | |
1054 | ||
658aead9 JH |
1055 | /* Since the controller supports only one LE connection attempt at a |
1056 | * time, we return -EBUSY if there is any connection attempt running. | |
1057 | */ | |
1058 | if (hci_lookup_le_connect(hdev)) | |
1059 | return ERR_PTR(-EBUSY); | |
1060 | ||
e2caced4 JH |
1061 | /* If there's already a connection object but it's not in |
1062 | * scanning state it means it must already be established, in | |
1063 | * which case we can't do anything else except report a failure | |
1064 | * to connect. | |
620ad521 | 1065 | */ |
9d4c1cc1 | 1066 | conn = hci_conn_hash_lookup_le(hdev, dst, dst_type); |
e2caced4 JH |
1067 | if (conn && !test_bit(HCI_CONN_SCANNING, &conn->flags)) { |
1068 | return ERR_PTR(-EBUSY); | |
620ad521 | 1069 | } |
dfc94dbd | 1070 | |
edb4b466 MH |
1071 | /* When given an identity address with existing identity |
1072 | * resolving key, the connection needs to be established | |
1073 | * to a resolvable random address. | |
1074 | * | |
edb4b466 MH |
1075 | * Storing the resolvable random address is required here |
1076 | * to handle connection failures. The address will later | |
1077 | * be resolved back into the original identity address | |
1078 | * from the connect request. | |
1079 | */ | |
1ebfcc1f JH |
1080 | irk = hci_find_irk_by_addr(hdev, dst, dst_type); |
1081 | if (irk && bacmp(&irk->rpa, BDADDR_ANY)) { | |
1082 | dst = &irk->rpa; | |
1083 | dst_type = ADDR_LE_DEV_RANDOM; | |
1084 | } | |
1085 | ||
e2caced4 | 1086 | if (conn) { |
28a667c9 JP |
1087 | bacpy(&conn->dst, dst); |
1088 | } else { | |
1089 | conn = hci_conn_add(hdev, LE_LINK, dst, role); | |
e2caced4 JH |
1090 | if (!conn) |
1091 | return ERR_PTR(-ENOMEM); | |
1092 | hci_conn_hold(conn); | |
1093 | conn->pending_sec_level = sec_level; | |
28a667c9 JP |
1094 | } |
1095 | ||
1ebfcc1f | 1096 | conn->dst_type = dst_type; |
620ad521 | 1097 | conn->sec_level = BT_SECURITY_LOW; |
09ae260b | 1098 | conn->conn_timeout = conn_timeout; |
4292f1f3 | 1099 | |
3c857757 JH |
1100 | hci_req_init(&req, hdev); |
1101 | ||
376f54c1 JH |
1102 | /* Disable advertising if we're active. For master role |
1103 | * connections most controllers will refuse to connect if | |
1104 | * advertising is enabled, and for slave role connections we | |
1105 | * anyway have to disable it in order to start directed | |
2943d8ed DW |
1106 | * advertising. Any registered advertisements will be |
1107 | * re-enabled after the connection attempt is finished. | |
376f54c1 | 1108 | */ |
05bd80a1 | 1109 | if (hci_dev_test_flag(hdev, HCI_LE_ADV)) |
2943d8ed | 1110 | __hci_req_pause_adv_instances(&req); |
376f54c1 | 1111 | |
cdd6275e | 1112 | /* If requested to connect as slave use directed advertising */ |
e804d25d | 1113 | if (conn->role == HCI_ROLE_SLAVE) { |
e8bb6b97 JH |
1114 | /* If we're active scanning most controllers are unable |
1115 | * to initiate advertising. Simply reject the attempt. | |
1116 | */ | |
d7a5a11d | 1117 | if (hci_dev_test_flag(hdev, HCI_LE_SCAN) && |
e8bb6b97 | 1118 | hdev->le_scan_type == LE_SCAN_ACTIVE) { |
f17d858e | 1119 | hci_req_purge(&req); |
e8bb6b97 JH |
1120 | hci_conn_del(conn); |
1121 | return ERR_PTR(-EBUSY); | |
1122 | } | |
1123 | ||
3c857757 JH |
1124 | hci_req_directed_advertising(&req, conn); |
1125 | goto create_conn; | |
1126 | } | |
1127 | ||
4292f1f3 AG |
1128 | params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); |
1129 | if (params) { | |
1130 | conn->le_conn_min_interval = params->conn_min_interval; | |
1131 | conn->le_conn_max_interval = params->conn_max_interval; | |
037fc415 MH |
1132 | conn->le_conn_latency = params->conn_latency; |
1133 | conn->le_supv_timeout = params->supervision_timeout; | |
4292f1f3 AG |
1134 | } else { |
1135 | conn->le_conn_min_interval = hdev->le_conn_min_interval; | |
1136 | conn->le_conn_max_interval = hdev->le_conn_max_interval; | |
04fb7d90 MH |
1137 | conn->le_conn_latency = hdev->le_conn_latency; |
1138 | conn->le_supv_timeout = hdev->le_supv_timeout; | |
4292f1f3 | 1139 | } |
eda42b50 | 1140 | |
2acf3d90 | 1141 | /* If controller is scanning, we stop it since some controllers are |
81ad6fd9 JH |
1142 | * not able to scan and connect at the same time. Also set the |
1143 | * HCI_LE_SCAN_INTERRUPTED flag so that the command complete | |
1144 | * handler for scan disabling knows to set the correct discovery | |
1145 | * state. | |
2acf3d90 | 1146 | */ |
d7a5a11d | 1147 | if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) { |
5c49bcce | 1148 | hci_req_add_le_scan_disable(&req, rpa_le_conn); |
a1536da2 | 1149 | hci_dev_set_flag(hdev, HCI_LE_SCAN_INTERRUPTED); |
2acf3d90 AG |
1150 | } |
1151 | ||
082f2300 | 1152 | hci_req_add_le_create_conn(&req, conn, direct_rpa); |
81ad6fd9 | 1153 | |
3c857757 | 1154 | create_conn: |
81ad6fd9 | 1155 | err = hci_req_run(&req, create_le_conn_complete); |
2acf3d90 AG |
1156 | if (err) { |
1157 | hci_conn_del(conn); | |
2943d8ed DW |
1158 | |
1159 | if (hdev->adv_instance_cnt) | |
1160 | hci_req_resume_adv_instances(hdev); | |
1161 | ||
620ad521 | 1162 | return ERR_PTR(err); |
2acf3d90 | 1163 | } |
fcd89c09 | 1164 | |
f1e5d547 | 1165 | return conn; |
d04aef4c | 1166 | } |
fcd89c09 | 1167 | |
f75113a2 JP |
1168 | static bool is_connected(struct hci_dev *hdev, bdaddr_t *addr, u8 type) |
1169 | { | |
1170 | struct hci_conn *conn; | |
1171 | ||
9d4c1cc1 | 1172 | conn = hci_conn_hash_lookup_le(hdev, addr, type); |
f75113a2 JP |
1173 | if (!conn) |
1174 | return false; | |
1175 | ||
f75113a2 JP |
1176 | if (conn->state != BT_CONNECTED) |
1177 | return false; | |
1178 | ||
1179 | return true; | |
1180 | } | |
1181 | ||
1182 | /* This function requires the caller holds hdev->lock */ | |
84235d22 | 1183 | static int hci_explicit_conn_params_set(struct hci_dev *hdev, |
f75113a2 JP |
1184 | bdaddr_t *addr, u8 addr_type) |
1185 | { | |
f75113a2 JP |
1186 | struct hci_conn_params *params; |
1187 | ||
1188 | if (is_connected(hdev, addr, addr_type)) | |
1189 | return -EISCONN; | |
1190 | ||
5157b8a5 JP |
1191 | params = hci_conn_params_lookup(hdev, addr, addr_type); |
1192 | if (!params) { | |
1193 | params = hci_conn_params_add(hdev, addr, addr_type); | |
1194 | if (!params) | |
1195 | return -ENOMEM; | |
1196 | ||
1197 | /* If we created new params, mark them to be deleted in | |
1198 | * hci_connect_le_scan_cleanup. It's different case than | |
1199 | * existing disabled params, those will stay after cleanup. | |
1200 | */ | |
1201 | params->auto_connect = HCI_AUTO_CONN_EXPLICIT; | |
1202 | } | |
f75113a2 | 1203 | |
5157b8a5 | 1204 | /* We're trying to connect, so make sure params are at pend_le_conns */ |
49c50922 | 1205 | if (params->auto_connect == HCI_AUTO_CONN_DISABLED || |
5157b8a5 JP |
1206 | params->auto_connect == HCI_AUTO_CONN_REPORT || |
1207 | params->auto_connect == HCI_AUTO_CONN_EXPLICIT) { | |
f75113a2 JP |
1208 | list_del_init(¶ms->action); |
1209 | list_add(¶ms->action, &hdev->pend_le_conns); | |
1210 | } | |
1211 | ||
1212 | params->explicit_connect = true; | |
f75113a2 JP |
1213 | |
1214 | BT_DBG("addr %pMR (type %u) auto_connect %u", addr, addr_type, | |
1215 | params->auto_connect); | |
1216 | ||
1217 | return 0; | |
1218 | } | |
1219 | ||
1220 | /* This function requires the caller holds hdev->lock */ | |
1221 | struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, | |
1222 | u8 dst_type, u8 sec_level, | |
76b13996 MM |
1223 | u16 conn_timeout, |
1224 | enum conn_reasons conn_reason) | |
f75113a2 JP |
1225 | { |
1226 | struct hci_conn *conn; | |
f75113a2 JP |
1227 | |
1228 | /* Let's make sure that le is enabled.*/ | |
1229 | if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { | |
1230 | if (lmp_le_capable(hdev)) | |
1231 | return ERR_PTR(-ECONNREFUSED); | |
1232 | ||
1233 | return ERR_PTR(-EOPNOTSUPP); | |
1234 | } | |
1235 | ||
1236 | /* Some devices send ATT messages as soon as the physical link is | |
1237 | * established. To be able to handle these ATT messages, the user- | |
1238 | * space first establishes the connection and then starts the pairing | |
1239 | * process. | |
1240 | * | |
1241 | * So if a hci_conn object already exists for the following connection | |
1242 | * attempt, we simply update pending_sec_level and auth_type fields | |
1243 | * and return the object found. | |
1244 | */ | |
9d4c1cc1 | 1245 | conn = hci_conn_hash_lookup_le(hdev, dst, dst_type); |
f75113a2 JP |
1246 | if (conn) { |
1247 | if (conn->pending_sec_level < sec_level) | |
1248 | conn->pending_sec_level = sec_level; | |
1249 | goto done; | |
1250 | } | |
1251 | ||
1252 | BT_DBG("requesting refresh of dst_addr"); | |
1253 | ||
0ad06aa6 | 1254 | conn = hci_conn_add(hdev, LE_LINK, dst, HCI_ROLE_MASTER); |
f75113a2 JP |
1255 | if (!conn) |
1256 | return ERR_PTR(-ENOMEM); | |
1257 | ||
d088337c NE |
1258 | if (hci_explicit_conn_params_set(hdev, dst, dst_type) < 0) { |
1259 | hci_conn_del(conn); | |
f75113a2 | 1260 | return ERR_PTR(-EBUSY); |
d088337c | 1261 | } |
f75113a2 JP |
1262 | |
1263 | conn->state = BT_CONNECT; | |
1264 | set_bit(HCI_CONN_SCANNING, &conn->flags); | |
f75113a2 JP |
1265 | conn->dst_type = dst_type; |
1266 | conn->sec_level = BT_SECURITY_LOW; | |
1267 | conn->pending_sec_level = sec_level; | |
1268 | conn->conn_timeout = conn_timeout; | |
76b13996 | 1269 | conn->conn_reason = conn_reason; |
f75113a2 | 1270 | |
84235d22 JH |
1271 | hci_update_background_scan(hdev); |
1272 | ||
f75113a2 JP |
1273 | done: |
1274 | hci_conn_hold(conn); | |
1275 | return conn; | |
1276 | } | |
1277 | ||
04a6c589 | 1278 | struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, |
76b13996 MM |
1279 | u8 sec_level, u8 auth_type, |
1280 | enum conn_reasons conn_reason) | |
1da177e4 LT |
1281 | { |
1282 | struct hci_conn *acl; | |
fcd89c09 | 1283 | |
d7a5a11d | 1284 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
c411110e LR |
1285 | if (lmp_bredr_capable(hdev)) |
1286 | return ERR_PTR(-ECONNREFUSED); | |
1287 | ||
beb19e4c | 1288 | return ERR_PTR(-EOPNOTSUPP); |
c411110e | 1289 | } |
56f87901 | 1290 | |
70f23020 AE |
1291 | acl = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst); |
1292 | if (!acl) { | |
a5c4e309 | 1293 | acl = hci_conn_add(hdev, ACL_LINK, dst, HCI_ROLE_MASTER); |
70f23020 | 1294 | if (!acl) |
48c7aba9 | 1295 | return ERR_PTR(-ENOMEM); |
1da177e4 LT |
1296 | } |
1297 | ||
1298 | hci_conn_hold(acl); | |
1299 | ||
76b13996 | 1300 | acl->conn_reason = conn_reason; |
09ab6f4c | 1301 | if (acl->state == BT_OPEN || acl->state == BT_CLOSED) { |
765c2a96 JH |
1302 | acl->sec_level = BT_SECURITY_LOW; |
1303 | acl->pending_sec_level = sec_level; | |
09ab6f4c | 1304 | acl->auth_type = auth_type; |
1aef8669 | 1305 | hci_acl_create_connection(acl); |
09ab6f4c | 1306 | } |
1da177e4 | 1307 | |
db474275 VCG |
1308 | return acl; |
1309 | } | |
1310 | ||
10c62ddc FD |
1311 | struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, |
1312 | __u16 setting) | |
db474275 VCG |
1313 | { |
1314 | struct hci_conn *acl; | |
1315 | struct hci_conn *sco; | |
1316 | ||
76b13996 MM |
1317 | acl = hci_connect_acl(hdev, dst, BT_SECURITY_LOW, HCI_AT_NO_BONDING, |
1318 | CONN_REASON_SCO_CONNECT); | |
db474275 | 1319 | if (IS_ERR(acl)) |
5b7f9909 | 1320 | return acl; |
1da177e4 | 1321 | |
70f23020 AE |
1322 | sco = hci_conn_hash_lookup_ba(hdev, type, dst); |
1323 | if (!sco) { | |
a5c4e309 | 1324 | sco = hci_conn_add(hdev, type, dst, HCI_ROLE_MASTER); |
70f23020 | 1325 | if (!sco) { |
76a68ba0 | 1326 | hci_conn_drop(acl); |
48c7aba9 | 1327 | return ERR_PTR(-ENOMEM); |
1da177e4 | 1328 | } |
5b7f9909 | 1329 | } |
1da177e4 | 1330 | |
5b7f9909 MH |
1331 | acl->link = sco; |
1332 | sco->link = acl; | |
1da177e4 | 1333 | |
5b7f9909 | 1334 | hci_conn_hold(sco); |
1da177e4 | 1335 | |
10c62ddc FD |
1336 | sco->setting = setting; |
1337 | ||
5b7f9909 | 1338 | if (acl->state == BT_CONNECTED && |
5974e4c4 | 1339 | (sco->state == BT_OPEN || sco->state == BT_CLOSED)) { |
58a681ef | 1340 | set_bit(HCI_CONN_POWER_SAVE, &acl->flags); |
14b12d0b | 1341 | hci_conn_enter_active_mode(acl, BT_POWER_FORCE_ACTIVE_ON); |
c390216b | 1342 | |
51a8efd7 | 1343 | if (test_bit(HCI_CONN_MODE_CHANGE_PEND, &acl->flags)) { |
e73439d8 | 1344 | /* defer SCO setup until mode change completed */ |
51a8efd7 | 1345 | set_bit(HCI_CONN_SCO_SETUP_PEND, &acl->flags); |
e73439d8 MH |
1346 | return sco; |
1347 | } | |
1348 | ||
1349 | hci_sco_setup(acl, 0x00); | |
b6a0dc82 | 1350 | } |
5b7f9909 MH |
1351 | |
1352 | return sco; | |
1da177e4 | 1353 | } |
1da177e4 | 1354 | |
e7c29cb1 MH |
1355 | /* Check link security requirement */ |
1356 | int hci_conn_check_link_mode(struct hci_conn *conn) | |
1357 | { | |
38b3fef1 | 1358 | BT_DBG("hcon %p", conn); |
e7c29cb1 | 1359 | |
40b552aa MH |
1360 | /* In Secure Connections Only mode, it is required that Secure |
1361 | * Connections is used and the link is encrypted with AES-CCM | |
1362 | * using a P-256 authenticated combination key. | |
1363 | */ | |
d7a5a11d | 1364 | if (hci_dev_test_flag(conn->hdev, HCI_SC_ONLY)) { |
40b552aa MH |
1365 | if (!hci_conn_sc_enabled(conn) || |
1366 | !test_bit(HCI_CONN_AES_CCM, &conn->flags) || | |
1367 | conn->key_type != HCI_LK_AUTH_COMBINATION_P256) | |
1368 | return 0; | |
1369 | } | |
1370 | ||
8746f135 LAD |
1371 | /* AES encryption is required for Level 4: |
1372 | * | |
1373 | * BLUETOOTH CORE SPECIFICATION Version 5.2 | Vol 3, Part C | |
1374 | * page 1319: | |
1375 | * | |
1376 | * 128-bit equivalent strength for link and encryption keys | |
1377 | * required using FIPS approved algorithms (E0 not allowed, | |
1378 | * SAFER+ not allowed, and P-192 not allowed; encryption key | |
1379 | * not shortened) | |
1380 | */ | |
1381 | if (conn->sec_level == BT_SECURITY_FIPS && | |
1382 | !test_bit(HCI_CONN_AES_CCM, &conn->flags)) { | |
1383 | bt_dev_err(conn->hdev, | |
1384 | "Invalid security: Missing AES-CCM usage"); | |
1385 | return 0; | |
1386 | } | |
1387 | ||
4dae2798 JH |
1388 | if (hci_conn_ssp_enabled(conn) && |
1389 | !test_bit(HCI_CONN_ENCRYPT, &conn->flags)) | |
e7c29cb1 MH |
1390 | return 0; |
1391 | ||
1392 | return 1; | |
1393 | } | |
e7c29cb1 | 1394 | |
1da177e4 | 1395 | /* Authenticate remote device */ |
0684e5f9 | 1396 | static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type) |
1da177e4 | 1397 | { |
38b3fef1 | 1398 | BT_DBG("hcon %p", conn); |
1da177e4 | 1399 | |
765c2a96 JH |
1400 | if (conn->pending_sec_level > sec_level) |
1401 | sec_level = conn->pending_sec_level; | |
1402 | ||
96a31833 | 1403 | if (sec_level > conn->sec_level) |
765c2a96 | 1404 | conn->pending_sec_level = sec_level; |
4dae2798 | 1405 | else if (test_bit(HCI_CONN_AUTH, &conn->flags)) |
1da177e4 LT |
1406 | return 1; |
1407 | ||
65cf686e JH |
1408 | /* Make sure we preserve an existing MITM requirement*/ |
1409 | auth_type |= (conn->auth_type & 0x01); | |
1410 | ||
96a31833 MH |
1411 | conn->auth_type = auth_type; |
1412 | ||
51a8efd7 | 1413 | if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { |
1da177e4 | 1414 | struct hci_cp_auth_requested cp; |
b7d05bad | 1415 | |
aca3192c | 1416 | cp.handle = cpu_to_le16(conn->handle); |
40be492f | 1417 | hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED, |
5974e4c4 | 1418 | sizeof(cp), &cp); |
09da1f34 JH |
1419 | |
1420 | /* If we're already encrypted set the REAUTH_PEND flag, | |
1421 | * otherwise set the ENCRYPT_PEND. | |
1422 | */ | |
4dae2798 | 1423 | if (test_bit(HCI_CONN_ENCRYPT, &conn->flags)) |
51a8efd7 | 1424 | set_bit(HCI_CONN_REAUTH_PEND, &conn->flags); |
09da1f34 JH |
1425 | else |
1426 | set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); | |
1da177e4 | 1427 | } |
8c1b2355 | 1428 | |
1da177e4 LT |
1429 | return 0; |
1430 | } | |
1da177e4 | 1431 | |
bb6d6895 | 1432 | /* Encrypt the link */ |
13d39315 WR |
1433 | static void hci_conn_encrypt(struct hci_conn *conn) |
1434 | { | |
38b3fef1 | 1435 | BT_DBG("hcon %p", conn); |
13d39315 | 1436 | |
51a8efd7 | 1437 | if (!test_and_set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { |
13d39315 WR |
1438 | struct hci_cp_set_conn_encrypt cp; |
1439 | cp.handle = cpu_to_le16(conn->handle); | |
1440 | cp.encrypt = 0x01; | |
1441 | hci_send_cmd(conn->hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), | |
5974e4c4 | 1442 | &cp); |
13d39315 WR |
1443 | } |
1444 | } | |
1445 | ||
8c1b2355 | 1446 | /* Enable security */ |
e7cafc45 JH |
1447 | int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, |
1448 | bool initiator) | |
1da177e4 | 1449 | { |
38b3fef1 | 1450 | BT_DBG("hcon %p", conn); |
1da177e4 | 1451 | |
d8343f12 VCG |
1452 | if (conn->type == LE_LINK) |
1453 | return smp_conn_security(conn, sec_level); | |
1454 | ||
13d39315 | 1455 | /* For sdp we don't need the link key. */ |
8c1b2355 MH |
1456 | if (sec_level == BT_SECURITY_SDP) |
1457 | return 1; | |
1458 | ||
13d39315 WR |
1459 | /* For non 2.1 devices and low security level we don't need the link |
1460 | key. */ | |
aa64a8b5 | 1461 | if (sec_level == BT_SECURITY_LOW && !hci_conn_ssp_enabled(conn)) |
3fdca1e1 | 1462 | return 1; |
8c1b2355 | 1463 | |
13d39315 | 1464 | /* For other security levels we need the link key. */ |
4dae2798 | 1465 | if (!test_bit(HCI_CONN_AUTH, &conn->flags)) |
13d39315 WR |
1466 | goto auth; |
1467 | ||
7b5a9241 MH |
1468 | /* An authenticated FIPS approved combination key has sufficient |
1469 | * security for security level 4. */ | |
1470 | if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256 && | |
1471 | sec_level == BT_SECURITY_FIPS) | |
1472 | goto encrypt; | |
1473 | ||
1474 | /* An authenticated combination key has sufficient security for | |
1475 | security level 3. */ | |
1476 | if ((conn->key_type == HCI_LK_AUTH_COMBINATION_P192 || | |
1477 | conn->key_type == HCI_LK_AUTH_COMBINATION_P256) && | |
1478 | sec_level == BT_SECURITY_HIGH) | |
13d39315 WR |
1479 | goto encrypt; |
1480 | ||
1481 | /* An unauthenticated combination key has sufficient security for | |
1482 | security level 1 and 2. */ | |
66138ce8 MH |
1483 | if ((conn->key_type == HCI_LK_UNAUTH_COMBINATION_P192 || |
1484 | conn->key_type == HCI_LK_UNAUTH_COMBINATION_P256) && | |
5974e4c4 | 1485 | (sec_level == BT_SECURITY_MEDIUM || sec_level == BT_SECURITY_LOW)) |
13d39315 WR |
1486 | goto encrypt; |
1487 | ||
1488 | /* A combination key has always sufficient security for the security | |
1489 | levels 1 or 2. High security level requires the combination key | |
1490 | is generated using maximum PIN code length (16). | |
1491 | For pre 2.1 units. */ | |
1492 | if (conn->key_type == HCI_LK_COMBINATION && | |
7b5a9241 MH |
1493 | (sec_level == BT_SECURITY_MEDIUM || sec_level == BT_SECURITY_LOW || |
1494 | conn->pin_length == 16)) | |
13d39315 WR |
1495 | goto encrypt; |
1496 | ||
1497 | auth: | |
51a8efd7 | 1498 | if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) |
1da177e4 LT |
1499 | return 0; |
1500 | ||
977f8fce JH |
1501 | if (initiator) |
1502 | set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); | |
1503 | ||
6fdf658c LAD |
1504 | if (!hci_conn_auth(conn, sec_level, auth_type)) |
1505 | return 0; | |
13d39315 WR |
1506 | |
1507 | encrypt: | |
693cd8ce MH |
1508 | if (test_bit(HCI_CONN_ENCRYPT, &conn->flags)) { |
1509 | /* Ensure that the encryption key size has been read, | |
1510 | * otherwise stall the upper layer responses. | |
1511 | */ | |
1512 | if (!conn->enc_key_size) | |
1513 | return 0; | |
1514 | ||
1515 | /* Nothing else needed, all requirements are met */ | |
13d39315 | 1516 | return 1; |
693cd8ce | 1517 | } |
8c1b2355 | 1518 | |
13d39315 | 1519 | hci_conn_encrypt(conn); |
1da177e4 LT |
1520 | return 0; |
1521 | } | |
8c1b2355 | 1522 | EXPORT_SYMBOL(hci_conn_security); |
1da177e4 | 1523 | |
b3b1b061 WR |
1524 | /* Check secure link requirement */ |
1525 | int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level) | |
1526 | { | |
38b3fef1 | 1527 | BT_DBG("hcon %p", conn); |
b3b1b061 | 1528 | |
9cb2e030 MH |
1529 | /* Accept if non-secure or higher security level is required */ |
1530 | if (sec_level != BT_SECURITY_HIGH && sec_level != BT_SECURITY_FIPS) | |
1531 | return 1; | |
b3b1b061 | 1532 | |
9cb2e030 MH |
1533 | /* Accept if secure or higher security level is already present */ |
1534 | if (conn->sec_level == BT_SECURITY_HIGH || | |
1535 | conn->sec_level == BT_SECURITY_FIPS) | |
b3b1b061 WR |
1536 | return 1; |
1537 | ||
9cb2e030 MH |
1538 | /* Reject not secure link */ |
1539 | return 0; | |
b3b1b061 WR |
1540 | } |
1541 | EXPORT_SYMBOL(hci_conn_check_secure); | |
1542 | ||
1da177e4 | 1543 | /* Switch role */ |
8c1b2355 | 1544 | int hci_conn_switch_role(struct hci_conn *conn, __u8 role) |
1da177e4 | 1545 | { |
38b3fef1 | 1546 | BT_DBG("hcon %p", conn); |
1da177e4 | 1547 | |
40bef302 | 1548 | if (role == conn->role) |
1da177e4 LT |
1549 | return 1; |
1550 | ||
51a8efd7 | 1551 | if (!test_and_set_bit(HCI_CONN_RSWITCH_PEND, &conn->flags)) { |
1da177e4 LT |
1552 | struct hci_cp_switch_role cp; |
1553 | bacpy(&cp.bdaddr, &conn->dst); | |
1554 | cp.role = role; | |
a9de9248 | 1555 | hci_send_cmd(conn->hdev, HCI_OP_SWITCH_ROLE, sizeof(cp), &cp); |
1da177e4 | 1556 | } |
8c1b2355 | 1557 | |
1da177e4 LT |
1558 | return 0; |
1559 | } | |
1560 | EXPORT_SYMBOL(hci_conn_switch_role); | |
1561 | ||
04837f64 | 1562 | /* Enter active mode */ |
14b12d0b | 1563 | void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active) |
04837f64 MH |
1564 | { |
1565 | struct hci_dev *hdev = conn->hdev; | |
1566 | ||
38b3fef1 | 1567 | BT_DBG("hcon %p mode %d", conn, conn->mode); |
04837f64 | 1568 | |
14b12d0b JG |
1569 | if (conn->mode != HCI_CM_SNIFF) |
1570 | goto timer; | |
1571 | ||
58a681ef | 1572 | if (!test_bit(HCI_CONN_POWER_SAVE, &conn->flags) && !force_active) |
04837f64 MH |
1573 | goto timer; |
1574 | ||
51a8efd7 | 1575 | if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags)) { |
04837f64 | 1576 | struct hci_cp_exit_sniff_mode cp; |
aca3192c | 1577 | cp.handle = cpu_to_le16(conn->handle); |
a9de9248 | 1578 | hci_send_cmd(hdev, HCI_OP_EXIT_SNIFF_MODE, sizeof(cp), &cp); |
04837f64 MH |
1579 | } |
1580 | ||
1581 | timer: | |
1582 | if (hdev->idle_timeout > 0) | |
a74a84f6 JH |
1583 | queue_delayed_work(hdev->workqueue, &conn->idle_work, |
1584 | msecs_to_jiffies(hdev->idle_timeout)); | |
04837f64 MH |
1585 | } |
1586 | ||
1da177e4 LT |
1587 | /* Drop all connection on the device */ |
1588 | void hci_conn_hash_flush(struct hci_dev *hdev) | |
1589 | { | |
1590 | struct hci_conn_hash *h = &hdev->conn_hash; | |
3c4e0df0 | 1591 | struct hci_conn *c, *n; |
1da177e4 LT |
1592 | |
1593 | BT_DBG("hdev %s", hdev->name); | |
1594 | ||
3c4e0df0 | 1595 | list_for_each_entry_safe(c, n, &h->list, list) { |
1da177e4 LT |
1596 | c->state = BT_CLOSED; |
1597 | ||
3a6d576b | 1598 | hci_disconn_cfm(c, HCI_ERROR_LOCAL_HOST_TERM); |
1da177e4 LT |
1599 | hci_conn_del(c); |
1600 | } | |
1601 | } | |
1602 | ||
a9de9248 MH |
1603 | /* Check pending connect attempts */ |
1604 | void hci_conn_check_pending(struct hci_dev *hdev) | |
1605 | { | |
1606 | struct hci_conn *conn; | |
1607 | ||
1608 | BT_DBG("hdev %s", hdev->name); | |
1609 | ||
1610 | hci_dev_lock(hdev); | |
1611 | ||
1612 | conn = hci_conn_hash_lookup_state(hdev, ACL_LINK, BT_CONNECT2); | |
1613 | if (conn) | |
1aef8669 | 1614 | hci_acl_create_connection(conn); |
a9de9248 MH |
1615 | |
1616 | hci_dev_unlock(hdev); | |
1617 | } | |
1618 | ||
4dae2798 JH |
1619 | static u32 get_link_mode(struct hci_conn *conn) |
1620 | { | |
1621 | u32 link_mode = 0; | |
1622 | ||
40bef302 | 1623 | if (conn->role == HCI_ROLE_MASTER) |
4dae2798 JH |
1624 | link_mode |= HCI_LM_MASTER; |
1625 | ||
1626 | if (test_bit(HCI_CONN_ENCRYPT, &conn->flags)) | |
1627 | link_mode |= HCI_LM_ENCRYPT; | |
1628 | ||
1629 | if (test_bit(HCI_CONN_AUTH, &conn->flags)) | |
1630 | link_mode |= HCI_LM_AUTH; | |
1631 | ||
1632 | if (test_bit(HCI_CONN_SECURE, &conn->flags)) | |
1633 | link_mode |= HCI_LM_SECURE; | |
1634 | ||
1635 | if (test_bit(HCI_CONN_FIPS, &conn->flags)) | |
1636 | link_mode |= HCI_LM_FIPS; | |
1637 | ||
1638 | return link_mode; | |
1639 | } | |
1640 | ||
1da177e4 LT |
1641 | int hci_get_conn_list(void __user *arg) |
1642 | { | |
fc5fef61 | 1643 | struct hci_conn *c; |
1da177e4 LT |
1644 | struct hci_conn_list_req req, *cl; |
1645 | struct hci_conn_info *ci; | |
1646 | struct hci_dev *hdev; | |
1da177e4 LT |
1647 | int n = 0, size, err; |
1648 | ||
1649 | if (copy_from_user(&req, arg, sizeof(req))) | |
1650 | return -EFAULT; | |
1651 | ||
1652 | if (!req.conn_num || req.conn_num > (PAGE_SIZE * 2) / sizeof(*ci)) | |
1653 | return -EINVAL; | |
1654 | ||
1655 | size = sizeof(req) + req.conn_num * sizeof(*ci); | |
1656 | ||
70f23020 AE |
1657 | cl = kmalloc(size, GFP_KERNEL); |
1658 | if (!cl) | |
1da177e4 LT |
1659 | return -ENOMEM; |
1660 | ||
70f23020 AE |
1661 | hdev = hci_dev_get(req.dev_id); |
1662 | if (!hdev) { | |
1da177e4 LT |
1663 | kfree(cl); |
1664 | return -ENODEV; | |
1665 | } | |
1666 | ||
1667 | ci = cl->conn_info; | |
1668 | ||
09fd0de5 | 1669 | hci_dev_lock(hdev); |
8035ded4 | 1670 | list_for_each_entry(c, &hdev->conn_hash.list, list) { |
1da177e4 LT |
1671 | bacpy(&(ci + n)->bdaddr, &c->dst); |
1672 | (ci + n)->handle = c->handle; | |
1673 | (ci + n)->type = c->type; | |
1674 | (ci + n)->out = c->out; | |
1675 | (ci + n)->state = c->state; | |
4dae2798 | 1676 | (ci + n)->link_mode = get_link_mode(c); |
1da177e4 LT |
1677 | if (++n >= req.conn_num) |
1678 | break; | |
1679 | } | |
09fd0de5 | 1680 | hci_dev_unlock(hdev); |
1da177e4 LT |
1681 | |
1682 | cl->dev_id = hdev->id; | |
1683 | cl->conn_num = n; | |
1684 | size = sizeof(req) + n * sizeof(*ci); | |
1685 | ||
1686 | hci_dev_put(hdev); | |
1687 | ||
1688 | err = copy_to_user(arg, cl, size); | |
1689 | kfree(cl); | |
1690 | ||
1691 | return err ? -EFAULT : 0; | |
1692 | } | |
1693 | ||
1694 | int hci_get_conn_info(struct hci_dev *hdev, void __user *arg) | |
1695 | { | |
1696 | struct hci_conn_info_req req; | |
1697 | struct hci_conn_info ci; | |
1698 | struct hci_conn *conn; | |
1699 | char __user *ptr = arg + sizeof(req); | |
1700 | ||
1701 | if (copy_from_user(&req, arg, sizeof(req))) | |
1702 | return -EFAULT; | |
1703 | ||
09fd0de5 | 1704 | hci_dev_lock(hdev); |
1da177e4 LT |
1705 | conn = hci_conn_hash_lookup_ba(hdev, req.type, &req.bdaddr); |
1706 | if (conn) { | |
1707 | bacpy(&ci.bdaddr, &conn->dst); | |
1708 | ci.handle = conn->handle; | |
1709 | ci.type = conn->type; | |
1710 | ci.out = conn->out; | |
1711 | ci.state = conn->state; | |
4dae2798 | 1712 | ci.link_mode = get_link_mode(conn); |
1da177e4 | 1713 | } |
09fd0de5 | 1714 | hci_dev_unlock(hdev); |
1da177e4 LT |
1715 | |
1716 | if (!conn) | |
1717 | return -ENOENT; | |
1718 | ||
1719 | return copy_to_user(ptr, &ci, sizeof(ci)) ? -EFAULT : 0; | |
1720 | } | |
40be492f MH |
1721 | |
1722 | int hci_get_auth_info(struct hci_dev *hdev, void __user *arg) | |
1723 | { | |
1724 | struct hci_auth_info_req req; | |
1725 | struct hci_conn *conn; | |
1726 | ||
1727 | if (copy_from_user(&req, arg, sizeof(req))) | |
1728 | return -EFAULT; | |
1729 | ||
09fd0de5 | 1730 | hci_dev_lock(hdev); |
40be492f MH |
1731 | conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &req.bdaddr); |
1732 | if (conn) | |
1733 | req.type = conn->auth_type; | |
09fd0de5 | 1734 | hci_dev_unlock(hdev); |
40be492f MH |
1735 | |
1736 | if (!conn) | |
1737 | return -ENOENT; | |
1738 | ||
1739 | return copy_to_user(arg, &req, sizeof(req)) ? -EFAULT : 0; | |
1740 | } | |
73d80deb LAD |
1741 | |
1742 | struct hci_chan *hci_chan_create(struct hci_conn *conn) | |
1743 | { | |
1744 | struct hci_dev *hdev = conn->hdev; | |
1745 | struct hci_chan *chan; | |
1746 | ||
38b3fef1 | 1747 | BT_DBG("%s hcon %p", hdev->name, conn); |
73d80deb | 1748 | |
f94b665d JH |
1749 | if (test_bit(HCI_CONN_DROP, &conn->flags)) { |
1750 | BT_DBG("Refusing to create new hci_chan"); | |
1751 | return NULL; | |
1752 | } | |
1753 | ||
27f70f3e | 1754 | chan = kzalloc(sizeof(*chan), GFP_KERNEL); |
73d80deb LAD |
1755 | if (!chan) |
1756 | return NULL; | |
1757 | ||
6c388d32 | 1758 | chan->conn = hci_conn_get(conn); |
73d80deb | 1759 | skb_queue_head_init(&chan->data_q); |
168df8e5 | 1760 | chan->state = BT_CONNECTED; |
73d80deb | 1761 | |
8192edef | 1762 | list_add_rcu(&chan->list, &conn->chan_list); |
73d80deb LAD |
1763 | |
1764 | return chan; | |
1765 | } | |
1766 | ||
9472007c | 1767 | void hci_chan_del(struct hci_chan *chan) |
73d80deb LAD |
1768 | { |
1769 | struct hci_conn *conn = chan->conn; | |
1770 | struct hci_dev *hdev = conn->hdev; | |
1771 | ||
38b3fef1 | 1772 | BT_DBG("%s hcon %p chan %p", hdev->name, conn, chan); |
73d80deb | 1773 | |
8192edef GP |
1774 | list_del_rcu(&chan->list); |
1775 | ||
1776 | synchronize_rcu(); | |
73d80deb | 1777 | |
bcbb655a | 1778 | /* Prevent new hci_chan's to be created for this hci_conn */ |
f94b665d | 1779 | set_bit(HCI_CONN_DROP, &conn->flags); |
b3ff670a | 1780 | |
6c388d32 | 1781 | hci_conn_put(conn); |
e9b02748 | 1782 | |
73d80deb LAD |
1783 | skb_queue_purge(&chan->data_q); |
1784 | kfree(chan); | |
73d80deb LAD |
1785 | } |
1786 | ||
2c33c06a | 1787 | void hci_chan_list_flush(struct hci_conn *conn) |
73d80deb | 1788 | { |
2a5a5ec6 | 1789 | struct hci_chan *chan, *n; |
73d80deb | 1790 | |
38b3fef1 | 1791 | BT_DBG("hcon %p", conn); |
73d80deb | 1792 | |
2a5a5ec6 | 1793 | list_for_each_entry_safe(chan, n, &conn->chan_list, list) |
73d80deb LAD |
1794 | hci_chan_del(chan); |
1795 | } | |
42c4e53e AE |
1796 | |
1797 | static struct hci_chan *__hci_chan_lookup_handle(struct hci_conn *hcon, | |
1798 | __u16 handle) | |
1799 | { | |
1800 | struct hci_chan *hchan; | |
1801 | ||
1802 | list_for_each_entry(hchan, &hcon->chan_list, list) { | |
1803 | if (hchan->handle == handle) | |
1804 | return hchan; | |
1805 | } | |
1806 | ||
1807 | return NULL; | |
1808 | } | |
1809 | ||
1810 | struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle) | |
1811 | { | |
1812 | struct hci_conn_hash *h = &hdev->conn_hash; | |
1813 | struct hci_conn *hcon; | |
1814 | struct hci_chan *hchan = NULL; | |
1815 | ||
1816 | rcu_read_lock(); | |
1817 | ||
1818 | list_for_each_entry_rcu(hcon, &h->list, list) { | |
1819 | hchan = __hci_chan_lookup_handle(hcon, handle); | |
1820 | if (hchan) | |
1821 | break; | |
1822 | } | |
1823 | ||
1824 | rcu_read_unlock(); | |
1825 | ||
1826 | return hchan; | |
1827 | } | |
eab2404b LAD |
1828 | |
1829 | u32 hci_conn_get_phy(struct hci_conn *conn) | |
1830 | { | |
1831 | u32 phys = 0; | |
1832 | ||
1833 | hci_dev_lock(conn->hdev); | |
1834 | ||
1835 | /* BLUETOOTH CORE SPECIFICATION Version 5.2 | Vol 2, Part B page 471: | |
1836 | * Table 6.2: Packets defined for synchronous, asynchronous, and | |
1837 | * CSB logical transport types. | |
1838 | */ | |
1839 | switch (conn->type) { | |
1840 | case SCO_LINK: | |
1841 | /* SCO logical transport (1 Mb/s): | |
1842 | * HV1, HV2, HV3 and DV. | |
1843 | */ | |
1844 | phys |= BT_PHY_BR_1M_1SLOT; | |
1845 | ||
1846 | break; | |
1847 | ||
1848 | case ACL_LINK: | |
1849 | /* ACL logical transport (1 Mb/s) ptt=0: | |
1850 | * DH1, DM3, DH3, DM5 and DH5. | |
1851 | */ | |
1852 | phys |= BT_PHY_BR_1M_1SLOT; | |
1853 | ||
1854 | if (conn->pkt_type & (HCI_DM3 | HCI_DH3)) | |
1855 | phys |= BT_PHY_BR_1M_3SLOT; | |
1856 | ||
1857 | if (conn->pkt_type & (HCI_DM5 | HCI_DH5)) | |
1858 | phys |= BT_PHY_BR_1M_5SLOT; | |
1859 | ||
1860 | /* ACL logical transport (2 Mb/s) ptt=1: | |
1861 | * 2-DH1, 2-DH3 and 2-DH5. | |
1862 | */ | |
1863 | if (!(conn->pkt_type & HCI_2DH1)) | |
1864 | phys |= BT_PHY_EDR_2M_1SLOT; | |
1865 | ||
1866 | if (!(conn->pkt_type & HCI_2DH3)) | |
1867 | phys |= BT_PHY_EDR_2M_3SLOT; | |
1868 | ||
1869 | if (!(conn->pkt_type & HCI_2DH5)) | |
1870 | phys |= BT_PHY_EDR_2M_5SLOT; | |
1871 | ||
1872 | /* ACL logical transport (3 Mb/s) ptt=1: | |
1873 | * 3-DH1, 3-DH3 and 3-DH5. | |
1874 | */ | |
1875 | if (!(conn->pkt_type & HCI_3DH1)) | |
1876 | phys |= BT_PHY_EDR_3M_1SLOT; | |
1877 | ||
1878 | if (!(conn->pkt_type & HCI_3DH3)) | |
1879 | phys |= BT_PHY_EDR_3M_3SLOT; | |
1880 | ||
1881 | if (!(conn->pkt_type & HCI_3DH5)) | |
1882 | phys |= BT_PHY_EDR_3M_5SLOT; | |
1883 | ||
1884 | break; | |
1885 | ||
1886 | case ESCO_LINK: | |
1887 | /* eSCO logical transport (1 Mb/s): EV3, EV4 and EV5 */ | |
1888 | phys |= BT_PHY_BR_1M_1SLOT; | |
1889 | ||
1890 | if (!(conn->pkt_type & (ESCO_EV4 | ESCO_EV5))) | |
1891 | phys |= BT_PHY_BR_1M_3SLOT; | |
1892 | ||
1893 | /* eSCO logical transport (2 Mb/s): 2-EV3, 2-EV5 */ | |
1894 | if (!(conn->pkt_type & ESCO_2EV3)) | |
1895 | phys |= BT_PHY_EDR_2M_1SLOT; | |
1896 | ||
1897 | if (!(conn->pkt_type & ESCO_2EV5)) | |
1898 | phys |= BT_PHY_EDR_2M_3SLOT; | |
1899 | ||
1900 | /* eSCO logical transport (3 Mb/s): 3-EV3, 3-EV5 */ | |
1901 | if (!(conn->pkt_type & ESCO_3EV3)) | |
1902 | phys |= BT_PHY_EDR_3M_1SLOT; | |
1903 | ||
1904 | if (!(conn->pkt_type & ESCO_3EV5)) | |
1905 | phys |= BT_PHY_EDR_3M_3SLOT; | |
1906 | ||
1907 | break; | |
1908 | ||
1909 | case LE_LINK: | |
1910 | if (conn->le_tx_phy & HCI_LE_SET_PHY_1M) | |
1911 | phys |= BT_PHY_LE_1M_TX; | |
1912 | ||
1913 | if (conn->le_rx_phy & HCI_LE_SET_PHY_1M) | |
1914 | phys |= BT_PHY_LE_1M_RX; | |
1915 | ||
1916 | if (conn->le_tx_phy & HCI_LE_SET_PHY_2M) | |
1917 | phys |= BT_PHY_LE_2M_TX; | |
1918 | ||
1919 | if (conn->le_rx_phy & HCI_LE_SET_PHY_2M) | |
1920 | phys |= BT_PHY_LE_2M_RX; | |
1921 | ||
1922 | if (conn->le_tx_phy & HCI_LE_SET_PHY_CODED) | |
1923 | phys |= BT_PHY_LE_CODED_TX; | |
1924 | ||
1925 | if (conn->le_rx_phy & HCI_LE_SET_PHY_CODED) | |
1926 | phys |= BT_PHY_LE_CODED_RX; | |
1927 | ||
1928 | break; | |
1929 | } | |
1930 | ||
1931 | hci_dev_unlock(conn->hdev); | |
1932 | ||
1933 | return phys; | |
1934 | } |