Commit | Line | Data |
---|---|---|
8e87d142 | 1 | /* |
1da177e4 | 2 | BlueZ - Bluetooth protocol stack for Linux |
2d0a0346 | 3 | Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. |
0fe8c8d0 | 4 | Copyright 2023 NXP |
1da177e4 LT |
5 | |
6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License version 2 as | |
10 | published by the Free Software Foundation; | |
11 | ||
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
20 | ||
8e87d142 YH |
21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
23 | SOFTWARE IS DISCLAIMED. |
24 | */ | |
25 | ||
26 | /* Bluetooth HCI connection handling. */ | |
27 | ||
8c520a59 | 28 | #include <linux/export.h> |
23b9ceb7 | 29 | #include <linux/debugfs.h> |
1da177e4 LT |
30 | |
31 | #include <net/bluetooth/bluetooth.h> | |
32 | #include <net/bluetooth/hci_core.h> | |
4bc58f51 | 33 | #include <net/bluetooth/l2cap.h> |
eca0ae4a LAD |
34 | #include <net/bluetooth/iso.h> |
35 | #include <net/bluetooth/mgmt.h> | |
1da177e4 | 36 | |
0857dd3b | 37 | #include "hci_request.h" |
ac4b7236 | 38 | #include "smp.h" |
7024728e | 39 | #include "a2mp.h" |
eca0ae4a | 40 | #include "eir.h" |
7024728e | 41 | |
2dea632f FD |
42 | struct sco_param { |
43 | u16 pkt_type; | |
44 | u16 max_latency; | |
c7da5797 | 45 | u8 retrans_effort; |
2dea632f FD |
46 | }; |
47 | ||
e07a06b4 BG |
48 | struct conn_handle_t { |
49 | struct hci_conn *conn; | |
50 | __u16 handle; | |
51 | }; | |
52 | ||
48e68ff5 | 53 | static const struct sco_param esco_param_cvsd[] = { |
c7da5797 JH |
54 | { EDR_ESCO_MASK & ~ESCO_2EV3, 0x000a, 0x01 }, /* S3 */ |
55 | { EDR_ESCO_MASK & ~ESCO_2EV3, 0x0007, 0x01 }, /* S2 */ | |
56 | { EDR_ESCO_MASK | ESCO_EV3, 0x0007, 0x01 }, /* S1 */ | |
57 | { EDR_ESCO_MASK | ESCO_HV3, 0xffff, 0x01 }, /* D1 */ | |
58 | { EDR_ESCO_MASK | ESCO_HV1, 0xffff, 0x01 }, /* D0 */ | |
2dea632f FD |
59 | }; |
60 | ||
48e68ff5 | 61 | static const struct sco_param sco_param_cvsd[] = { |
c7da5797 JH |
62 | { EDR_ESCO_MASK | ESCO_HV3, 0xffff, 0xff }, /* D1 */ |
63 | { EDR_ESCO_MASK | ESCO_HV1, 0xffff, 0xff }, /* D0 */ | |
48e68ff5 BT |
64 | }; |
65 | ||
565766b0 | 66 | static const struct sco_param esco_param_msbc[] = { |
c7da5797 JH |
67 | { EDR_ESCO_MASK & ~ESCO_2EV3, 0x000d, 0x02 }, /* T2 */ |
68 | { EDR_ESCO_MASK | ESCO_EV3, 0x0008, 0x02 }, /* T1 */ | |
2dea632f FD |
69 | }; |
70 | ||
f75113a2 | 71 | /* This function requires the caller holds hdev->lock */ |
19cf60bf | 72 | static void hci_connect_le_scan_cleanup(struct hci_conn *conn, u8 status) |
f75113a2 JP |
73 | { |
74 | struct hci_conn_params *params; | |
b5c2b621 | 75 | struct hci_dev *hdev = conn->hdev; |
f75113a2 JP |
76 | struct smp_irk *irk; |
77 | bdaddr_t *bdaddr; | |
78 | u8 bdaddr_type; | |
79 | ||
80 | bdaddr = &conn->dst; | |
81 | bdaddr_type = conn->dst_type; | |
82 | ||
83 | /* Check if we need to convert to identity address */ | |
b5c2b621 | 84 | irk = hci_get_irk(hdev, bdaddr, bdaddr_type); |
f75113a2 JP |
85 | if (irk) { |
86 | bdaddr = &irk->bdaddr; | |
87 | bdaddr_type = irk->addr_type; | |
88 | } | |
89 | ||
17bc08f0 JH |
90 | params = hci_pend_le_action_lookup(&hdev->pend_le_conns, bdaddr, |
91 | bdaddr_type); | |
19cf60bf | 92 | if (!params) |
f75113a2 JP |
93 | return; |
94 | ||
19cf60bf LAD |
95 | if (params->conn) { |
96 | hci_conn_drop(params->conn); | |
97 | hci_conn_put(params->conn); | |
98 | params->conn = NULL; | |
99 | } | |
100 | ||
101 | if (!params->explicit_connect) | |
102 | return; | |
103 | ||
104 | /* If the status indicates successful cancellation of | |
105 | * the attempt (i.e. Unknown Connection Id) there's no point of | |
106 | * notifying failure since we'll go back to keep trying to | |
107 | * connect. The only exception is explicit connect requests | |
108 | * where a timeout + cancel does indicate an actual failure. | |
109 | */ | |
110 | if (status && status != HCI_ERROR_UNKNOWN_CONN_ID) | |
111 | mgmt_connect_failed(hdev, &conn->dst, conn->type, | |
112 | conn->dst_type, status); | |
113 | ||
f75113a2 JP |
114 | /* The connection attempt was doing scan for new RPA, and is |
115 | * in scan phase. If params are not associated with any other | |
116 | * autoconnect action, remove them completely. If they are, just unmark | |
117 | * them as waiting for connection, by clearing explicit_connect field. | |
118 | */ | |
9ad3e6ff JH |
119 | params->explicit_connect = false; |
120 | ||
195ef75e | 121 | hci_pend_le_list_del_init(params); |
9ad3e6ff JH |
122 | |
123 | switch (params->auto_connect) { | |
124 | case HCI_AUTO_CONN_EXPLICIT: | |
b5c2b621 | 125 | hci_conn_params_del(hdev, bdaddr, bdaddr_type); |
9ad3e6ff JH |
126 | /* return instead of break to avoid duplicate scan update */ |
127 | return; | |
128 | case HCI_AUTO_CONN_DIRECT: | |
129 | case HCI_AUTO_CONN_ALWAYS: | |
195ef75e | 130 | hci_pend_le_list_add(params, &hdev->pend_le_conns); |
9ad3e6ff JH |
131 | break; |
132 | case HCI_AUTO_CONN_REPORT: | |
195ef75e | 133 | hci_pend_le_list_add(params, &hdev->pend_le_reports); |
9ad3e6ff JH |
134 | break; |
135 | default: | |
136 | break; | |
168b8a25 | 137 | } |
9ad3e6ff | 138 | |
5bee2fd6 | 139 | hci_update_passive_scan(hdev); |
f75113a2 JP |
140 | } |
141 | ||
b958f9a3 JH |
142 | static void hci_conn_cleanup(struct hci_conn *conn) |
143 | { | |
144 | struct hci_dev *hdev = conn->hdev; | |
145 | ||
146 | if (test_bit(HCI_CONN_PARAM_REMOVAL_PEND, &conn->flags)) | |
147 | hci_conn_params_del(conn->hdev, &conn->dst, conn->dst_type); | |
148 | ||
629f66aa AM |
149 | if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) |
150 | hci_remove_link_key(hdev, &conn->dst); | |
151 | ||
b958f9a3 JH |
152 | hci_chan_list_flush(conn); |
153 | ||
154 | hci_conn_hash_del(hdev, conn); | |
155 | ||
26afbd82 LAD |
156 | if (conn->cleanup) |
157 | conn->cleanup(conn); | |
158 | ||
1f8330ea SN |
159 | if (conn->type == SCO_LINK || conn->type == ESCO_LINK) { |
160 | switch (conn->setting & SCO_AIRMODE_MASK) { | |
161 | case SCO_AIRMODE_CVSD: | |
162 | case SCO_AIRMODE_TRANSP: | |
163 | if (hdev->notify) | |
164 | hdev->notify(hdev, HCI_NOTIFY_DISABLE_SCO); | |
165 | break; | |
166 | } | |
167 | } else { | |
168 | if (hdev->notify) | |
169 | hdev->notify(hdev, HCI_NOTIFY_CONN_DEL); | |
170 | } | |
b958f9a3 JH |
171 | |
172 | hci_conn_del_sysfs(conn); | |
173 | ||
174 | debugfs_remove_recursive(conn->debugfs); | |
175 | ||
176 | hci_dev_put(hdev); | |
177 | ||
178 | hci_conn_put(conn); | |
179 | } | |
180 | ||
8ce783dc | 181 | static void le_scan_cleanup(struct work_struct *work) |
f75113a2 | 182 | { |
8ce783dc JH |
183 | struct hci_conn *conn = container_of(work, struct hci_conn, |
184 | le_scan_cleanup); | |
185 | struct hci_dev *hdev = conn->hdev; | |
186 | struct hci_conn *c = NULL; | |
187 | ||
188 | BT_DBG("%s hcon %p", hdev->name, conn); | |
189 | ||
190 | hci_dev_lock(hdev); | |
191 | ||
192 | /* Check that the hci_conn is still around */ | |
193 | rcu_read_lock(); | |
194 | list_for_each_entry_rcu(c, &hdev->conn_hash.list, list) { | |
195 | if (c == conn) | |
196 | break; | |
197 | } | |
198 | rcu_read_unlock(); | |
199 | ||
200 | if (c == conn) { | |
19cf60bf | 201 | hci_connect_le_scan_cleanup(conn, 0x00); |
8ce783dc JH |
202 | hci_conn_cleanup(conn); |
203 | } | |
204 | ||
205 | hci_dev_unlock(hdev); | |
206 | hci_dev_put(hdev); | |
207 | hci_conn_put(conn); | |
208 | } | |
f75113a2 | 209 | |
8ce783dc JH |
210 | static void hci_connect_le_scan_remove(struct hci_conn *conn) |
211 | { | |
212 | BT_DBG("%s hcon %p", conn->hdev->name, conn); | |
213 | ||
214 | /* We can't call hci_conn_del/hci_conn_cleanup here since that | |
215 | * could deadlock with another hci_conn_del() call that's holding | |
216 | * hci_dev_lock and doing cancel_delayed_work_sync(&conn->disc_work). | |
217 | * Instead, grab temporary extra references to the hci_dev and | |
218 | * hci_conn and perform the necessary cleanup in a separate work | |
219 | * callback. | |
b958f9a3 | 220 | */ |
8ce783dc JH |
221 | |
222 | hci_dev_hold(conn->hdev); | |
223 | hci_conn_get(conn); | |
224 | ||
0ebc1818 JH |
225 | /* Even though we hold a reference to the hdev, many other |
226 | * things might get cleaned up meanwhile, including the hdev's | |
227 | * own workqueue, so we can't use that for scheduling. | |
228 | */ | |
8ce783dc | 229 | schedule_work(&conn->le_scan_cleanup); |
f75113a2 JP |
230 | } |
231 | ||
1aef8669 | 232 | static void hci_acl_create_connection(struct hci_conn *conn) |
1da177e4 LT |
233 | { |
234 | struct hci_dev *hdev = conn->hdev; | |
235 | struct inquiry_entry *ie; | |
236 | struct hci_cp_create_conn cp; | |
237 | ||
42d2d87c | 238 | BT_DBG("hcon %p", conn); |
1da177e4 | 239 | |
89e65975 SS |
240 | /* Many controllers disallow HCI Create Connection while it is doing |
241 | * HCI Inquiry. So we cancel the Inquiry first before issuing HCI Create | |
242 | * Connection. This may cause the MGMT discovering state to become false | |
243 | * without user space's request but it is okay since the MGMT Discovery | |
244 | * APIs do not promise that discovery should be done forever. Instead, | |
245 | * the user space monitors the status of MGMT discovering and it may | |
246 | * request for discovery again when this flag becomes false. | |
247 | */ | |
248 | if (test_bit(HCI_INQUIRY, &hdev->flags)) { | |
249 | /* Put this connection to "pending" state so that it will be | |
250 | * executed after the inquiry cancel command complete event. | |
251 | */ | |
252 | conn->state = BT_CONNECT2; | |
253 | hci_send_cmd(hdev, HCI_OP_INQUIRY_CANCEL, 0, NULL); | |
254 | return; | |
255 | } | |
256 | ||
1da177e4 | 257 | conn->state = BT_CONNECT; |
a0c808b3 | 258 | conn->out = true; |
40bef302 | 259 | conn->role = HCI_ROLE_MASTER; |
1da177e4 | 260 | |
4c67bc74 MH |
261 | conn->attempt++; |
262 | ||
e4e8e37c MH |
263 | conn->link_policy = hdev->link_policy; |
264 | ||
1da177e4 LT |
265 | memset(&cp, 0, sizeof(cp)); |
266 | bacpy(&cp.bdaddr, &conn->dst); | |
267 | cp.pscan_rep_mode = 0x02; | |
268 | ||
70f23020 AE |
269 | ie = hci_inquiry_cache_lookup(hdev, &conn->dst); |
270 | if (ie) { | |
41a96212 MH |
271 | if (inquiry_entry_age(ie) <= INQUIRY_ENTRY_AGE_MAX) { |
272 | cp.pscan_rep_mode = ie->data.pscan_rep_mode; | |
273 | cp.pscan_mode = ie->data.pscan_mode; | |
274 | cp.clock_offset = ie->data.clock_offset | | |
dcf4adbf | 275 | cpu_to_le16(0x8000); |
41a96212 MH |
276 | } |
277 | ||
1da177e4 LT |
278 | memcpy(conn->dev_class, ie->data.dev_class, 3); |
279 | } | |
280 | ||
a8746417 | 281 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
1da177e4 | 282 | if (lmp_rswitch_capable(hdev) && !(hdev->link_mode & HCI_LM_MASTER)) |
b6a0dc82 | 283 | cp.role_switch = 0x01; |
1da177e4 | 284 | else |
b6a0dc82 | 285 | cp.role_switch = 0x00; |
4c67bc74 | 286 | |
a9de9248 | 287 | hci_send_cmd(hdev, HCI_OP_CREATE_CONN, sizeof(cp), &cp); |
1da177e4 LT |
288 | } |
289 | ||
e3b679d5 | 290 | int hci_disconnect(struct hci_conn *conn, __u8 reason) |
1da177e4 | 291 | { |
38b3fef1 | 292 | BT_DBG("hcon %p", conn); |
1da177e4 | 293 | |
74be523c | 294 | /* When we are central of an established connection and it enters |
839035a7 JH |
295 | * the disconnect timeout, then go ahead and try to read the |
296 | * current clock offset. Processing of the result is done | |
297 | * within the event handling and hci_clock_offset_evt function. | |
298 | */ | |
88d07feb JH |
299 | if (conn->type == ACL_LINK && conn->role == HCI_ROLE_MASTER && |
300 | (conn->state == BT_CONNECTED || conn->state == BT_CONFIG)) { | |
839035a7 | 301 | struct hci_dev *hdev = conn->hdev; |
4f639ede | 302 | struct hci_cp_read_clock_offset clkoff_cp; |
839035a7 | 303 | |
4f639ede FF |
304 | clkoff_cp.handle = cpu_to_le16(conn->handle); |
305 | hci_send_cmd(hdev, HCI_OP_READ_CLOCK_OFFSET, sizeof(clkoff_cp), | |
306 | &clkoff_cp); | |
839035a7 JH |
307 | } |
308 | ||
88d07feb | 309 | return hci_abort_conn(conn, reason); |
1da177e4 LT |
310 | } |
311 | ||
57f5d0d1 | 312 | static void hci_add_sco(struct hci_conn *conn, __u16 handle) |
1da177e4 LT |
313 | { |
314 | struct hci_dev *hdev = conn->hdev; | |
315 | struct hci_cp_add_sco cp; | |
316 | ||
38b3fef1 | 317 | BT_DBG("hcon %p", conn); |
1da177e4 LT |
318 | |
319 | conn->state = BT_CONNECT; | |
a0c808b3 | 320 | conn->out = true; |
1da177e4 | 321 | |
efc7688b MH |
322 | conn->attempt++; |
323 | ||
aca3192c | 324 | cp.handle = cpu_to_le16(handle); |
a8746417 | 325 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
1da177e4 | 326 | |
a9de9248 | 327 | hci_send_cmd(hdev, HCI_OP_ADD_SCO, sizeof(cp), &cp); |
1da177e4 LT |
328 | } |
329 | ||
8b1c324c YL |
330 | static bool find_next_esco_param(struct hci_conn *conn, |
331 | const struct sco_param *esco_param, int size) | |
332 | { | |
06149746 LAD |
333 | if (!conn->parent) |
334 | return false; | |
335 | ||
8b1c324c | 336 | for (; conn->attempt <= size; conn->attempt++) { |
06149746 | 337 | if (lmp_esco_2m_capable(conn->parent) || |
8b1c324c YL |
338 | (esco_param[conn->attempt - 1].pkt_type & ESCO_2EV3)) |
339 | break; | |
340 | BT_DBG("hcon %p skipped attempt %d, eSCO 2M not supported", | |
341 | conn, conn->attempt); | |
342 | } | |
343 | ||
344 | return conn->attempt <= size; | |
345 | } | |
346 | ||
e07a06b4 | 347 | static int configure_datapath_sync(struct hci_dev *hdev, struct bt_codec *codec) |
b2af264a | 348 | { |
e07a06b4 BG |
349 | int err; |
350 | __u8 vnd_len, *vnd_data = NULL; | |
351 | struct hci_op_configure_data_path *cmd = NULL; | |
352 | ||
353 | err = hdev->get_codec_config_data(hdev, ESCO_LINK, codec, &vnd_len, | |
354 | &vnd_data); | |
355 | if (err < 0) | |
356 | goto error; | |
357 | ||
358 | cmd = kzalloc(sizeof(*cmd) + vnd_len, GFP_KERNEL); | |
359 | if (!cmd) { | |
360 | err = -ENOMEM; | |
361 | goto error; | |
362 | } | |
363 | ||
364 | err = hdev->get_data_path_id(hdev, &cmd->data_path_id); | |
365 | if (err < 0) | |
366 | goto error; | |
367 | ||
368 | cmd->vnd_len = vnd_len; | |
369 | memcpy(cmd->vnd_data, vnd_data, vnd_len); | |
370 | ||
371 | cmd->direction = 0x00; | |
372 | __hci_cmd_sync_status(hdev, HCI_CONFIGURE_DATA_PATH, | |
373 | sizeof(*cmd) + vnd_len, cmd, HCI_CMD_TIMEOUT); | |
374 | ||
375 | cmd->direction = 0x01; | |
376 | err = __hci_cmd_sync_status(hdev, HCI_CONFIGURE_DATA_PATH, | |
377 | sizeof(*cmd) + vnd_len, cmd, | |
378 | HCI_CMD_TIMEOUT); | |
379 | error: | |
380 | ||
381 | kfree(cmd); | |
382 | kfree(vnd_data); | |
383 | return err; | |
384 | } | |
385 | ||
386 | static int hci_enhanced_setup_sync(struct hci_dev *hdev, void *data) | |
387 | { | |
388 | struct conn_handle_t *conn_handle = data; | |
389 | struct hci_conn *conn = conn_handle->conn; | |
390 | __u16 handle = conn_handle->handle; | |
b2af264a K |
391 | struct hci_cp_enhanced_setup_sync_conn cp; |
392 | const struct sco_param *param; | |
393 | ||
e07a06b4 BG |
394 | kfree(conn_handle); |
395 | ||
b2af264a K |
396 | bt_dev_dbg(hdev, "hcon %p", conn); |
397 | ||
9798fbde K |
398 | /* for offload use case, codec needs to configured before opening SCO */ |
399 | if (conn->codec.data_path) | |
e07a06b4 | 400 | configure_datapath_sync(hdev, &conn->codec); |
9798fbde | 401 | |
b2af264a K |
402 | conn->state = BT_CONNECT; |
403 | conn->out = true; | |
404 | ||
405 | conn->attempt++; | |
406 | ||
407 | memset(&cp, 0x00, sizeof(cp)); | |
408 | ||
409 | cp.handle = cpu_to_le16(handle); | |
410 | ||
411 | cp.tx_bandwidth = cpu_to_le32(0x00001f40); | |
412 | cp.rx_bandwidth = cpu_to_le32(0x00001f40); | |
413 | ||
414 | switch (conn->codec.id) { | |
904c139a K |
415 | case BT_CODEC_MSBC: |
416 | if (!find_next_esco_param(conn, esco_param_msbc, | |
417 | ARRAY_SIZE(esco_param_msbc))) | |
e07a06b4 | 418 | return -EINVAL; |
904c139a K |
419 | |
420 | param = &esco_param_msbc[conn->attempt - 1]; | |
421 | cp.tx_coding_format.id = 0x05; | |
422 | cp.rx_coding_format.id = 0x05; | |
423 | cp.tx_codec_frame_size = __cpu_to_le16(60); | |
424 | cp.rx_codec_frame_size = __cpu_to_le16(60); | |
425 | cp.in_bandwidth = __cpu_to_le32(32000); | |
426 | cp.out_bandwidth = __cpu_to_le32(32000); | |
427 | cp.in_coding_format.id = 0x04; | |
428 | cp.out_coding_format.id = 0x04; | |
429 | cp.in_coded_data_size = __cpu_to_le16(16); | |
430 | cp.out_coded_data_size = __cpu_to_le16(16); | |
431 | cp.in_pcm_data_format = 2; | |
432 | cp.out_pcm_data_format = 2; | |
433 | cp.in_pcm_sample_payload_msb_pos = 0; | |
434 | cp.out_pcm_sample_payload_msb_pos = 0; | |
435 | cp.in_data_path = conn->codec.data_path; | |
436 | cp.out_data_path = conn->codec.data_path; | |
437 | cp.in_transport_unit_size = 1; | |
438 | cp.out_transport_unit_size = 1; | |
439 | break; | |
440 | ||
b2af264a K |
441 | case BT_CODEC_TRANSPARENT: |
442 | if (!find_next_esco_param(conn, esco_param_msbc, | |
443 | ARRAY_SIZE(esco_param_msbc))) | |
444 | return false; | |
445 | param = &esco_param_msbc[conn->attempt - 1]; | |
446 | cp.tx_coding_format.id = 0x03; | |
447 | cp.rx_coding_format.id = 0x03; | |
448 | cp.tx_codec_frame_size = __cpu_to_le16(60); | |
449 | cp.rx_codec_frame_size = __cpu_to_le16(60); | |
450 | cp.in_bandwidth = __cpu_to_le32(0x1f40); | |
451 | cp.out_bandwidth = __cpu_to_le32(0x1f40); | |
452 | cp.in_coding_format.id = 0x03; | |
453 | cp.out_coding_format.id = 0x03; | |
454 | cp.in_coded_data_size = __cpu_to_le16(16); | |
455 | cp.out_coded_data_size = __cpu_to_le16(16); | |
456 | cp.in_pcm_data_format = 2; | |
457 | cp.out_pcm_data_format = 2; | |
458 | cp.in_pcm_sample_payload_msb_pos = 0; | |
459 | cp.out_pcm_sample_payload_msb_pos = 0; | |
460 | cp.in_data_path = conn->codec.data_path; | |
461 | cp.out_data_path = conn->codec.data_path; | |
462 | cp.in_transport_unit_size = 1; | |
463 | cp.out_transport_unit_size = 1; | |
464 | break; | |
465 | ||
466 | case BT_CODEC_CVSD: | |
06149746 | 467 | if (conn->parent && lmp_esco_capable(conn->parent)) { |
b2af264a K |
468 | if (!find_next_esco_param(conn, esco_param_cvsd, |
469 | ARRAY_SIZE(esco_param_cvsd))) | |
e07a06b4 | 470 | return -EINVAL; |
b2af264a K |
471 | param = &esco_param_cvsd[conn->attempt - 1]; |
472 | } else { | |
473 | if (conn->attempt > ARRAY_SIZE(sco_param_cvsd)) | |
e07a06b4 | 474 | return -EINVAL; |
b2af264a K |
475 | param = &sco_param_cvsd[conn->attempt - 1]; |
476 | } | |
477 | cp.tx_coding_format.id = 2; | |
478 | cp.rx_coding_format.id = 2; | |
479 | cp.tx_codec_frame_size = __cpu_to_le16(60); | |
480 | cp.rx_codec_frame_size = __cpu_to_le16(60); | |
481 | cp.in_bandwidth = __cpu_to_le32(16000); | |
482 | cp.out_bandwidth = __cpu_to_le32(16000); | |
483 | cp.in_coding_format.id = 4; | |
484 | cp.out_coding_format.id = 4; | |
485 | cp.in_coded_data_size = __cpu_to_le16(16); | |
486 | cp.out_coded_data_size = __cpu_to_le16(16); | |
487 | cp.in_pcm_data_format = 2; | |
488 | cp.out_pcm_data_format = 2; | |
489 | cp.in_pcm_sample_payload_msb_pos = 0; | |
490 | cp.out_pcm_sample_payload_msb_pos = 0; | |
491 | cp.in_data_path = conn->codec.data_path; | |
492 | cp.out_data_path = conn->codec.data_path; | |
493 | cp.in_transport_unit_size = 16; | |
494 | cp.out_transport_unit_size = 16; | |
495 | break; | |
496 | default: | |
e07a06b4 | 497 | return -EINVAL; |
b2af264a K |
498 | } |
499 | ||
500 | cp.retrans_effort = param->retrans_effort; | |
501 | cp.pkt_type = __cpu_to_le16(param->pkt_type); | |
502 | cp.max_latency = __cpu_to_le16(param->max_latency); | |
503 | ||
504 | if (hci_send_cmd(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN, sizeof(cp), &cp) < 0) | |
e07a06b4 | 505 | return -EIO; |
b2af264a | 506 | |
e07a06b4 | 507 | return 0; |
b2af264a K |
508 | } |
509 | ||
510 | static bool hci_setup_sync_conn(struct hci_conn *conn, __u16 handle) | |
b6a0dc82 MH |
511 | { |
512 | struct hci_dev *hdev = conn->hdev; | |
513 | struct hci_cp_setup_sync_conn cp; | |
2dea632f | 514 | const struct sco_param *param; |
b6a0dc82 | 515 | |
b2af264a | 516 | bt_dev_dbg(hdev, "hcon %p", conn); |
b6a0dc82 MH |
517 | |
518 | conn->state = BT_CONNECT; | |
a0c808b3 | 519 | conn->out = true; |
b6a0dc82 | 520 | |
efc7688b MH |
521 | conn->attempt++; |
522 | ||
b6a0dc82 | 523 | cp.handle = cpu_to_le16(handle); |
b6a0dc82 | 524 | |
dcf4adbf JP |
525 | cp.tx_bandwidth = cpu_to_le32(0x00001f40); |
526 | cp.rx_bandwidth = cpu_to_le32(0x00001f40); | |
10c62ddc FD |
527 | cp.voice_setting = cpu_to_le16(conn->setting); |
528 | ||
529 | switch (conn->setting & SCO_AIRMODE_MASK) { | |
530 | case SCO_AIRMODE_TRANSP: | |
8b1c324c YL |
531 | if (!find_next_esco_param(conn, esco_param_msbc, |
532 | ARRAY_SIZE(esco_param_msbc))) | |
2dea632f | 533 | return false; |
565766b0 | 534 | param = &esco_param_msbc[conn->attempt - 1]; |
10c62ddc FD |
535 | break; |
536 | case SCO_AIRMODE_CVSD: | |
06149746 | 537 | if (conn->parent && lmp_esco_capable(conn->parent)) { |
8b1c324c YL |
538 | if (!find_next_esco_param(conn, esco_param_cvsd, |
539 | ARRAY_SIZE(esco_param_cvsd))) | |
48e68ff5 | 540 | return false; |
48e68ff5 BT |
541 | param = &esco_param_cvsd[conn->attempt - 1]; |
542 | } else { | |
543 | if (conn->attempt > ARRAY_SIZE(sco_param_cvsd)) | |
544 | return false; | |
48e68ff5 BT |
545 | param = &sco_param_cvsd[conn->attempt - 1]; |
546 | } | |
10c62ddc | 547 | break; |
2dea632f FD |
548 | default: |
549 | return false; | |
10c62ddc | 550 | } |
b6a0dc82 | 551 | |
c7da5797 | 552 | cp.retrans_effort = param->retrans_effort; |
2dea632f FD |
553 | cp.pkt_type = __cpu_to_le16(param->pkt_type); |
554 | cp.max_latency = __cpu_to_le16(param->max_latency); | |
555 | ||
556 | if (hci_send_cmd(hdev, HCI_OP_SETUP_SYNC_CONN, sizeof(cp), &cp) < 0) | |
557 | return false; | |
558 | ||
559 | return true; | |
b6a0dc82 MH |
560 | } |
561 | ||
b2af264a K |
562 | bool hci_setup_sync(struct hci_conn *conn, __u16 handle) |
563 | { | |
e07a06b4 BG |
564 | int result; |
565 | struct conn_handle_t *conn_handle; | |
566 | ||
567 | if (enhanced_sync_conn_capable(conn->hdev)) { | |
568 | conn_handle = kzalloc(sizeof(*conn_handle), GFP_KERNEL); | |
569 | ||
570 | if (!conn_handle) | |
571 | return false; | |
572 | ||
573 | conn_handle->conn = conn; | |
574 | conn_handle->handle = handle; | |
575 | result = hci_cmd_sync_queue(conn->hdev, hci_enhanced_setup_sync, | |
576 | conn_handle, NULL); | |
577 | if (result < 0) | |
578 | kfree(conn_handle); | |
579 | ||
580 | return result == 0; | |
581 | } | |
b2af264a K |
582 | |
583 | return hci_setup_sync_conn(conn, handle); | |
584 | } | |
585 | ||
7d6ca693 JH |
586 | u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, |
587 | u16 to_multiplier) | |
2ce603eb | 588 | { |
2ce603eb | 589 | struct hci_dev *hdev = conn->hdev; |
f044eb05 MH |
590 | struct hci_conn_params *params; |
591 | struct hci_cp_le_conn_update cp; | |
2ce603eb | 592 | |
f044eb05 | 593 | hci_dev_lock(hdev); |
2ce603eb | 594 | |
f044eb05 MH |
595 | params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); |
596 | if (params) { | |
597 | params->conn_min_interval = min; | |
598 | params->conn_max_interval = max; | |
599 | params->conn_latency = latency; | |
600 | params->supervision_timeout = to_multiplier; | |
601 | } | |
602 | ||
603 | hci_dev_unlock(hdev); | |
604 | ||
605 | memset(&cp, 0, sizeof(cp)); | |
2ce603eb CT |
606 | cp.handle = cpu_to_le16(conn->handle); |
607 | cp.conn_interval_min = cpu_to_le16(min); | |
608 | cp.conn_interval_max = cpu_to_le16(max); | |
609 | cp.conn_latency = cpu_to_le16(latency); | |
610 | cp.supervision_timeout = cpu_to_le16(to_multiplier); | |
dcf4adbf JP |
611 | cp.min_ce_len = cpu_to_le16(0x0000); |
612 | cp.max_ce_len = cpu_to_le16(0x0000); | |
2ce603eb CT |
613 | |
614 | hci_send_cmd(hdev, HCI_OP_LE_CONN_UPDATE, sizeof(cp), &cp); | |
7d6ca693 JH |
615 | |
616 | if (params) | |
617 | return 0x01; | |
618 | ||
619 | return 0x00; | |
2ce603eb | 620 | } |
2ce603eb | 621 | |
fe39c7b2 | 622 | void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, |
8b76ce34 | 623 | __u8 ltk[16], __u8 key_size) |
a7a595f6 VCG |
624 | { |
625 | struct hci_dev *hdev = conn->hdev; | |
626 | struct hci_cp_le_start_enc cp; | |
627 | ||
38b3fef1 | 628 | BT_DBG("hcon %p", conn); |
a7a595f6 VCG |
629 | |
630 | memset(&cp, 0, sizeof(cp)); | |
631 | ||
632 | cp.handle = cpu_to_le16(conn->handle); | |
fe39c7b2 | 633 | cp.rand = rand; |
a7a595f6 | 634 | cp.ediv = ediv; |
8b76ce34 | 635 | memcpy(cp.ltk, ltk, key_size); |
a7a595f6 VCG |
636 | |
637 | hci_send_cmd(hdev, HCI_OP_LE_START_ENC, sizeof(cp), &cp); | |
638 | } | |
a7a595f6 | 639 | |
e73439d8 MH |
640 | /* Device _must_ be locked */ |
641 | void hci_sco_setup(struct hci_conn *conn, __u8 status) | |
642 | { | |
06149746 | 643 | struct hci_link *link; |
e73439d8 | 644 | |
06149746 LAD |
645 | link = list_first_entry_or_null(&conn->link_list, struct hci_link, list); |
646 | if (!link || !link->conn) | |
e73439d8 MH |
647 | return; |
648 | ||
38b3fef1 AE |
649 | BT_DBG("hcon %p", conn); |
650 | ||
e73439d8 MH |
651 | if (!status) { |
652 | if (lmp_esco_capable(conn->hdev)) | |
06149746 | 653 | hci_setup_sync(link->conn, conn->handle); |
e73439d8 | 654 | else |
06149746 | 655 | hci_add_sco(link->conn, conn->handle); |
e73439d8 | 656 | } else { |
06149746 LAD |
657 | hci_connect_cfm(link->conn, status); |
658 | hci_conn_del(link->conn); | |
e73439d8 MH |
659 | } |
660 | } | |
661 | ||
19c40e3b | 662 | static void hci_conn_timeout(struct work_struct *work) |
1da177e4 | 663 | { |
19c40e3b | 664 | struct hci_conn *conn = container_of(work, struct hci_conn, |
5974e4c4 | 665 | disc_work.work); |
1d56dc4f | 666 | int refcnt = atomic_read(&conn->refcnt); |
1da177e4 | 667 | |
38b3fef1 | 668 | BT_DBG("hcon %p state %s", conn, state_to_string(conn->state)); |
1da177e4 | 669 | |
1d56dc4f LR |
670 | WARN_ON(refcnt < 0); |
671 | ||
672 | /* FIXME: It was observed that in pairing failed scenario, refcnt | |
673 | * drops below 0. Probably this is because l2cap_conn_del calls | |
674 | * l2cap_chan_del for each channel, and inside l2cap_chan_del conn is | |
675 | * dropped. After that loop hci_chan_del is called which also drops | |
676 | * conn. For now make sure that ACL is alive if refcnt is higher then 0, | |
677 | * otherwise drop it. | |
678 | */ | |
679 | if (refcnt > 0) | |
1da177e4 LT |
680 | return; |
681 | ||
89e0ccc8 JH |
682 | /* LE connections in scanning state need special handling */ |
683 | if (conn->state == BT_CONNECT && conn->type == LE_LINK && | |
684 | test_bit(HCI_CONN_SCANNING, &conn->flags)) { | |
685 | hci_connect_le_scan_remove(conn); | |
686 | return; | |
6ac59344 | 687 | } |
89e0ccc8 JH |
688 | |
689 | hci_abort_conn(conn, hci_proto_disconn_ind(conn)); | |
1da177e4 LT |
690 | } |
691 | ||
416dc94b | 692 | /* Enter sniff mode */ |
a74a84f6 | 693 | static void hci_conn_idle(struct work_struct *work) |
416dc94b | 694 | { |
a74a84f6 JH |
695 | struct hci_conn *conn = container_of(work, struct hci_conn, |
696 | idle_work.work); | |
416dc94b GP |
697 | struct hci_dev *hdev = conn->hdev; |
698 | ||
38b3fef1 | 699 | BT_DBG("hcon %p mode %d", conn, conn->mode); |
416dc94b | 700 | |
416dc94b GP |
701 | if (!lmp_sniff_capable(hdev) || !lmp_sniff_capable(conn)) |
702 | return; | |
703 | ||
704 | if (conn->mode != HCI_CM_ACTIVE || !(conn->link_policy & HCI_LP_SNIFF)) | |
705 | return; | |
706 | ||
707 | if (lmp_sniffsubr_capable(hdev) && lmp_sniffsubr_capable(conn)) { | |
708 | struct hci_cp_sniff_subrate cp; | |
709 | cp.handle = cpu_to_le16(conn->handle); | |
dcf4adbf JP |
710 | cp.max_latency = cpu_to_le16(0); |
711 | cp.min_remote_timeout = cpu_to_le16(0); | |
712 | cp.min_local_timeout = cpu_to_le16(0); | |
416dc94b GP |
713 | hci_send_cmd(hdev, HCI_OP_SNIFF_SUBRATE, sizeof(cp), &cp); |
714 | } | |
715 | ||
51a8efd7 | 716 | if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags)) { |
416dc94b GP |
717 | struct hci_cp_sniff_mode cp; |
718 | cp.handle = cpu_to_le16(conn->handle); | |
719 | cp.max_interval = cpu_to_le16(hdev->sniff_max_interval); | |
720 | cp.min_interval = cpu_to_le16(hdev->sniff_min_interval); | |
dcf4adbf JP |
721 | cp.attempt = cpu_to_le16(4); |
722 | cp.timeout = cpu_to_le16(1); | |
416dc94b GP |
723 | hci_send_cmd(hdev, HCI_OP_SNIFF_MODE, sizeof(cp), &cp); |
724 | } | |
725 | } | |
726 | ||
7bc18d9d | 727 | static void hci_conn_auto_accept(struct work_struct *work) |
9f61656a | 728 | { |
7bc18d9d JH |
729 | struct hci_conn *conn = container_of(work, struct hci_conn, |
730 | auto_accept_work.work); | |
9f61656a | 731 | |
7bc18d9d | 732 | hci_send_cmd(conn->hdev, HCI_OP_USER_CONFIRM_REPLY, sizeof(conn->dst), |
5974e4c4 | 733 | &conn->dst); |
9f61656a JH |
734 | } |
735 | ||
c3bed4de SN |
736 | static void le_disable_advertising(struct hci_dev *hdev) |
737 | { | |
738 | if (ext_adv_capable(hdev)) { | |
739 | struct hci_cp_le_set_ext_adv_enable cp; | |
740 | ||
741 | cp.enable = 0x00; | |
742 | cp.num_of_sets = 0x00; | |
743 | ||
744 | hci_send_cmd(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE, sizeof(cp), | |
745 | &cp); | |
746 | } else { | |
747 | u8 enable = 0x00; | |
748 | hci_send_cmd(hdev, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), | |
749 | &enable); | |
750 | } | |
751 | } | |
752 | ||
9489eca4 JH |
753 | static void le_conn_timeout(struct work_struct *work) |
754 | { | |
755 | struct hci_conn *conn = container_of(work, struct hci_conn, | |
756 | le_conn_timeout.work); | |
3c857757 | 757 | struct hci_dev *hdev = conn->hdev; |
9489eca4 JH |
758 | |
759 | BT_DBG(""); | |
760 | ||
3c857757 JH |
761 | /* We could end up here due to having done directed advertising, |
762 | * so clean up the state if necessary. This should however only | |
763 | * happen with broken hardware or if low duty cycle was used | |
764 | * (which doesn't have a timeout of its own). | |
765 | */ | |
0b1db38c | 766 | if (conn->role == HCI_ROLE_SLAVE) { |
c3bed4de SN |
767 | /* Disable LE Advertising */ |
768 | le_disable_advertising(hdev); | |
9fa6b4cd | 769 | hci_dev_lock(hdev); |
9b3628d7 | 770 | hci_conn_failed(conn, HCI_ERROR_ADVERTISING_TIMEOUT); |
9fa6b4cd | 771 | hci_dev_unlock(hdev); |
3c857757 JH |
772 | return; |
773 | } | |
774 | ||
89e0ccc8 | 775 | hci_abort_conn(conn, HCI_ERROR_REMOTE_USER_TERM); |
9489eca4 JH |
776 | } |
777 | ||
6b9545dc PV |
778 | struct iso_cig_params { |
779 | struct hci_cp_le_set_cig_params cp; | |
780 | struct hci_cis_params cis[0x1f]; | |
781 | }; | |
782 | ||
eca0ae4a LAD |
783 | struct iso_list_data { |
784 | union { | |
785 | u8 cig; | |
786 | u8 big; | |
787 | }; | |
788 | union { | |
789 | u8 cis; | |
790 | u8 bis; | |
791 | u16 sync_handle; | |
792 | }; | |
793 | int count; | |
6b9545dc | 794 | struct iso_cig_params pdu; |
eca0ae4a LAD |
795 | }; |
796 | ||
797 | static void bis_list(struct hci_conn *conn, void *data) | |
798 | { | |
799 | struct iso_list_data *d = data; | |
800 | ||
801 | /* Skip if not broadcast/ANY address */ | |
802 | if (bacmp(&conn->dst, BDADDR_ANY)) | |
803 | return; | |
804 | ||
0fe8c8d0 IT |
805 | if (d->big != conn->iso_qos.bcast.big || d->bis == BT_ISO_QOS_BIS_UNSET || |
806 | d->bis != conn->iso_qos.bcast.bis) | |
eca0ae4a LAD |
807 | return; |
808 | ||
809 | d->count++; | |
810 | } | |
811 | ||
812 | static void find_bis(struct hci_conn *conn, void *data) | |
813 | { | |
814 | struct iso_list_data *d = data; | |
815 | ||
816 | /* Ignore unicast */ | |
817 | if (bacmp(&conn->dst, BDADDR_ANY)) | |
818 | return; | |
819 | ||
820 | d->count++; | |
821 | } | |
822 | ||
823 | static int terminate_big_sync(struct hci_dev *hdev, void *data) | |
824 | { | |
825 | struct iso_list_data *d = data; | |
826 | ||
827 | bt_dev_dbg(hdev, "big 0x%2.2x bis 0x%2.2x", d->big, d->bis); | |
828 | ||
829 | hci_remove_ext_adv_instance_sync(hdev, d->bis, NULL); | |
830 | ||
831 | /* Check if ISO connection is a BIS and terminate BIG if there are | |
832 | * no other connections using it. | |
833 | */ | |
834 | hci_conn_hash_list_state(hdev, find_bis, ISO_LINK, BT_CONNECTED, d); | |
835 | if (d->count) | |
836 | return 0; | |
837 | ||
838 | return hci_le_terminate_big_sync(hdev, d->big, | |
839 | HCI_ERROR_LOCAL_HOST_TERM); | |
840 | } | |
841 | ||
842 | static void terminate_big_destroy(struct hci_dev *hdev, void *data, int err) | |
843 | { | |
844 | kfree(data); | |
845 | } | |
846 | ||
847 | static int hci_le_terminate_big(struct hci_dev *hdev, u8 big, u8 bis) | |
848 | { | |
849 | struct iso_list_data *d; | |
3aa21311 | 850 | int ret; |
eca0ae4a LAD |
851 | |
852 | bt_dev_dbg(hdev, "big 0x%2.2x bis 0x%2.2x", big, bis); | |
853 | ||
3958e877 | 854 | d = kzalloc(sizeof(*d), GFP_KERNEL); |
eca0ae4a LAD |
855 | if (!d) |
856 | return -ENOMEM; | |
857 | ||
eca0ae4a LAD |
858 | d->big = big; |
859 | d->bis = bis; | |
860 | ||
3aa21311 ZS |
861 | ret = hci_cmd_sync_queue(hdev, terminate_big_sync, d, |
862 | terminate_big_destroy); | |
863 | if (ret) | |
864 | kfree(d); | |
865 | ||
866 | return ret; | |
eca0ae4a LAD |
867 | } |
868 | ||
869 | static int big_terminate_sync(struct hci_dev *hdev, void *data) | |
870 | { | |
871 | struct iso_list_data *d = data; | |
872 | ||
873 | bt_dev_dbg(hdev, "big 0x%2.2x sync_handle 0x%4.4x", d->big, | |
874 | d->sync_handle); | |
875 | ||
876 | /* Check if ISO connection is a BIS and terminate BIG if there are | |
877 | * no other connections using it. | |
878 | */ | |
879 | hci_conn_hash_list_state(hdev, find_bis, ISO_LINK, BT_CONNECTED, d); | |
880 | if (d->count) | |
881 | return 0; | |
882 | ||
883 | hci_le_big_terminate_sync(hdev, d->big); | |
884 | ||
885 | return hci_le_pa_terminate_sync(hdev, d->sync_handle); | |
886 | } | |
887 | ||
888 | static int hci_le_big_terminate(struct hci_dev *hdev, u8 big, u16 sync_handle) | |
889 | { | |
890 | struct iso_list_data *d; | |
3aa21311 | 891 | int ret; |
eca0ae4a LAD |
892 | |
893 | bt_dev_dbg(hdev, "big 0x%2.2x sync_handle 0x%4.4x", big, sync_handle); | |
894 | ||
3958e877 | 895 | d = kzalloc(sizeof(*d), GFP_KERNEL); |
eca0ae4a LAD |
896 | if (!d) |
897 | return -ENOMEM; | |
898 | ||
eca0ae4a LAD |
899 | d->big = big; |
900 | d->sync_handle = sync_handle; | |
901 | ||
3aa21311 ZS |
902 | ret = hci_cmd_sync_queue(hdev, big_terminate_sync, d, |
903 | terminate_big_destroy); | |
904 | if (ret) | |
905 | kfree(d); | |
906 | ||
907 | return ret; | |
eca0ae4a LAD |
908 | } |
909 | ||
910 | /* Cleanup BIS connection | |
911 | * | |
912 | * Detects if there any BIS left connected in a BIG | |
913 | * broadcaster: Remove advertising instance and terminate BIG. | |
914 | * broadcaster receiver: Teminate BIG sync and terminate PA sync. | |
915 | */ | |
916 | static void bis_cleanup(struct hci_conn *conn) | |
917 | { | |
918 | struct hci_dev *hdev = conn->hdev; | |
919 | ||
920 | bt_dev_dbg(hdev, "conn %p", conn); | |
921 | ||
922 | if (conn->role == HCI_ROLE_MASTER) { | |
923 | if (!test_and_clear_bit(HCI_CONN_PER_ADV, &conn->flags)) | |
924 | return; | |
925 | ||
0fe8c8d0 IT |
926 | hci_le_terminate_big(hdev, conn->iso_qos.bcast.big, |
927 | conn->iso_qos.bcast.bis); | |
eca0ae4a | 928 | } else { |
0fe8c8d0 | 929 | hci_le_big_terminate(hdev, conn->iso_qos.bcast.big, |
eca0ae4a LAD |
930 | conn->sync_handle); |
931 | } | |
932 | } | |
933 | ||
934 | static int remove_cig_sync(struct hci_dev *hdev, void *data) | |
935 | { | |
936 | u8 handle = PTR_ERR(data); | |
937 | ||
938 | return hci_le_remove_cig_sync(hdev, handle); | |
939 | } | |
940 | ||
941 | static int hci_le_remove_cig(struct hci_dev *hdev, u8 handle) | |
942 | { | |
943 | bt_dev_dbg(hdev, "handle 0x%2.2x", handle); | |
944 | ||
945 | return hci_cmd_sync_queue(hdev, remove_cig_sync, ERR_PTR(handle), NULL); | |
946 | } | |
947 | ||
948 | static void find_cis(struct hci_conn *conn, void *data) | |
949 | { | |
950 | struct iso_list_data *d = data; | |
951 | ||
31c5f916 PV |
952 | /* Ignore broadcast or if CIG don't match */ |
953 | if (!bacmp(&conn->dst, BDADDR_ANY) || d->cig != conn->iso_qos.ucast.cig) | |
eca0ae4a LAD |
954 | return; |
955 | ||
956 | d->count++; | |
957 | } | |
958 | ||
959 | /* Cleanup CIS connection: | |
960 | * | |
961 | * Detects if there any CIS left connected in a CIG and remove it. | |
962 | */ | |
963 | static void cis_cleanup(struct hci_conn *conn) | |
964 | { | |
965 | struct hci_dev *hdev = conn->hdev; | |
966 | struct iso_list_data d; | |
967 | ||
31c5f916 PV |
968 | if (conn->iso_qos.ucast.cig == BT_ISO_QOS_CIG_UNSET) |
969 | return; | |
970 | ||
eca0ae4a | 971 | memset(&d, 0, sizeof(d)); |
0fe8c8d0 | 972 | d.cig = conn->iso_qos.ucast.cig; |
eca0ae4a LAD |
973 | |
974 | /* Check if ISO connection is a CIS and remove CIG if there are | |
975 | * no other connections using it. | |
976 | */ | |
6c242c64 PV |
977 | hci_conn_hash_list_state(hdev, find_cis, ISO_LINK, BT_BOUND, &d); |
978 | hci_conn_hash_list_state(hdev, find_cis, ISO_LINK, BT_CONNECT, &d); | |
eca0ae4a LAD |
979 | hci_conn_hash_list_state(hdev, find_cis, ISO_LINK, BT_CONNECTED, &d); |
980 | if (d.count) | |
981 | return; | |
982 | ||
0fe8c8d0 | 983 | hci_le_remove_cig(hdev, conn->iso_qos.ucast.cig); |
eca0ae4a LAD |
984 | } |
985 | ||
a5c4e309 JH |
986 | struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, |
987 | u8 role) | |
1da177e4 LT |
988 | { |
989 | struct hci_conn *conn; | |
990 | ||
6ed93dc6 | 991 | BT_DBG("%s dst %pMR", hdev->name, dst); |
1da177e4 | 992 | |
27f70f3e | 993 | conn = kzalloc(sizeof(*conn), GFP_KERNEL); |
04837f64 | 994 | if (!conn) |
1da177e4 | 995 | return NULL; |
1da177e4 LT |
996 | |
997 | bacpy(&conn->dst, dst); | |
662e8820 | 998 | bacpy(&conn->src, &hdev->bdaddr); |
d5ebaa7c | 999 | conn->handle = HCI_CONN_HANDLE_UNSET; |
a8746417 MH |
1000 | conn->hdev = hdev; |
1001 | conn->type = type; | |
a5c4e309 | 1002 | conn->role = role; |
a8746417 MH |
1003 | conn->mode = HCI_CM_ACTIVE; |
1004 | conn->state = BT_OPEN; | |
93f19c9f | 1005 | conn->auth_type = HCI_AT_GENERAL_BONDING; |
17fa4b9d | 1006 | conn->io_capability = hdev->io_capability; |
a9583556 | 1007 | conn->remote_auth = 0xff; |
13d39315 | 1008 | conn->key_type = 0xff; |
ebf86aa3 | 1009 | conn->rssi = HCI_RSSI_INVALID; |
5a134fae | 1010 | conn->tx_power = HCI_TX_POWER_INVALID; |
d0455ed9 | 1011 | conn->max_tx_power = HCI_TX_POWER_INVALID; |
1da177e4 | 1012 | |
58a681ef | 1013 | set_bit(HCI_CONN_POWER_SAVE, &conn->flags); |
052b30b0 | 1014 | conn->disc_timeout = HCI_DISCONN_TIMEOUT; |
04837f64 | 1015 | |
302975cb SRK |
1016 | /* Set Default Authenticated payload timeout to 30s */ |
1017 | conn->auth_payload_timeout = DEFAULT_AUTH_PAYLOAD_TIMEOUT; | |
1018 | ||
a5c4e309 JH |
1019 | if (conn->role == HCI_ROLE_MASTER) |
1020 | conn->out = true; | |
1021 | ||
a8746417 MH |
1022 | switch (type) { |
1023 | case ACL_LINK: | |
1024 | conn->pkt_type = hdev->pkt_type & ACL_PTYPE_MASK; | |
1025 | break; | |
9c84d1da | 1026 | case LE_LINK: |
eca0ae4a LAD |
1027 | /* conn->src should reflect the local identity address */ |
1028 | hci_copy_identity_address(hdev, &conn->src, &conn->src_type); | |
1029 | break; | |
26afbd82 | 1030 | case ISO_LINK: |
9c84d1da JH |
1031 | /* conn->src should reflect the local identity address */ |
1032 | hci_copy_identity_address(hdev, &conn->src, &conn->src_type); | |
eca0ae4a LAD |
1033 | |
1034 | /* set proper cleanup function */ | |
1035 | if (!bacmp(dst, BDADDR_ANY)) | |
1036 | conn->cleanup = bis_cleanup; | |
1037 | else if (conn->role == HCI_ROLE_MASTER) | |
1038 | conn->cleanup = cis_cleanup; | |
1039 | ||
9c84d1da | 1040 | break; |
a8746417 MH |
1041 | case SCO_LINK: |
1042 | if (lmp_esco_capable(hdev)) | |
efc7688b MH |
1043 | conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | |
1044 | (hdev->esco_type & EDR_ESCO_MASK); | |
a8746417 MH |
1045 | else |
1046 | conn->pkt_type = hdev->pkt_type & SCO_PTYPE_MASK; | |
1047 | break; | |
1048 | case ESCO_LINK: | |
efc7688b | 1049 | conn->pkt_type = hdev->esco_type & ~EDR_ESCO_MASK; |
a8746417 MH |
1050 | break; |
1051 | } | |
1052 | ||
1da177e4 | 1053 | skb_queue_head_init(&conn->data_q); |
04837f64 | 1054 | |
70c1f20b | 1055 | INIT_LIST_HEAD(&conn->chan_list); |
06149746 | 1056 | INIT_LIST_HEAD(&conn->link_list); |
73d80deb | 1057 | |
19c40e3b | 1058 | INIT_DELAYED_WORK(&conn->disc_work, hci_conn_timeout); |
7bc18d9d | 1059 | INIT_DELAYED_WORK(&conn->auto_accept_work, hci_conn_auto_accept); |
a74a84f6 | 1060 | INIT_DELAYED_WORK(&conn->idle_work, hci_conn_idle); |
9489eca4 | 1061 | INIT_DELAYED_WORK(&conn->le_conn_timeout, le_conn_timeout); |
8ce783dc | 1062 | INIT_WORK(&conn->le_scan_cleanup, le_scan_cleanup); |
1da177e4 LT |
1063 | |
1064 | atomic_set(&conn->refcnt, 0); | |
1065 | ||
1066 | hci_dev_hold(hdev); | |
1067 | ||
1da177e4 | 1068 | hci_conn_hash_add(hdev, conn); |
1f8330ea SN |
1069 | |
1070 | /* The SCO and eSCO connections will only be notified when their | |
1071 | * setup has been completed. This is different to ACL links which | |
1072 | * can be notified right away. | |
1073 | */ | |
1074 | if (conn->type != SCO_LINK && conn->type != ESCO_LINK) { | |
1075 | if (hdev->notify) | |
1076 | hdev->notify(hdev, HCI_NOTIFY_CONN_ADD); | |
1077 | } | |
1da177e4 | 1078 | |
a67e899c MH |
1079 | hci_conn_init_sysfs(conn); |
1080 | ||
1da177e4 LT |
1081 | return conn; |
1082 | } | |
1083 | ||
06149746 | 1084 | static void hci_conn_unlink(struct hci_conn *conn) |
5dc7d23e | 1085 | { |
06149746 LAD |
1086 | struct hci_dev *hdev = conn->hdev; |
1087 | ||
1088 | bt_dev_dbg(hdev, "hcon %p", conn); | |
1089 | ||
1090 | if (!conn->parent) { | |
1091 | struct hci_link *link, *t; | |
1092 | ||
ca1fd42e RL |
1093 | list_for_each_entry_safe(link, t, &conn->link_list, list) { |
1094 | struct hci_conn *child = link->conn; | |
1095 | ||
1096 | hci_conn_unlink(child); | |
1097 | ||
a2ac591c RL |
1098 | /* If hdev is down it means |
1099 | * hci_dev_close_sync/hci_conn_hash_flush is in progress | |
1100 | * and links don't need to be cleanup as all connections | |
1101 | * would be cleanup. | |
1102 | */ | |
1103 | if (!test_bit(HCI_UP, &hdev->flags)) | |
1104 | continue; | |
1105 | ||
ca1fd42e RL |
1106 | /* Due to race, SCO connection might be not established |
1107 | * yet at this point. Delete it now, otherwise it is | |
1108 | * possible for it to be stuck and can't be deleted. | |
1109 | */ | |
a2904d28 RL |
1110 | if ((child->type == SCO_LINK || |
1111 | child->type == ESCO_LINK) && | |
1112 | child->handle == HCI_CONN_HANDLE_UNSET) | |
ca1fd42e RL |
1113 | hci_conn_del(child); |
1114 | } | |
06149746 LAD |
1115 | |
1116 | return; | |
1117 | } | |
1118 | ||
5dc7d23e | 1119 | if (!conn->link) |
06149746 | 1120 | return; |
5dc7d23e | 1121 | |
06149746 LAD |
1122 | list_del_rcu(&conn->link->list); |
1123 | synchronize_rcu(); | |
1124 | ||
a2904d28 | 1125 | hci_conn_drop(conn->parent); |
2910431a RL |
1126 | hci_conn_put(conn->parent); |
1127 | conn->parent = NULL; | |
1128 | ||
06149746 | 1129 | kfree(conn->link); |
5dc7d23e | 1130 | conn->link = NULL; |
5dc7d23e LAD |
1131 | } |
1132 | ||
a2ac591c | 1133 | void hci_conn_del(struct hci_conn *conn) |
1da177e4 LT |
1134 | { |
1135 | struct hci_dev *hdev = conn->hdev; | |
1136 | ||
38b3fef1 | 1137 | BT_DBG("%s hcon %p handle %d", hdev->name, conn, conn->handle); |
1da177e4 | 1138 | |
a2904d28 RL |
1139 | hci_conn_unlink(conn); |
1140 | ||
19c40e3b | 1141 | cancel_delayed_work_sync(&conn->disc_work); |
7bc18d9d | 1142 | cancel_delayed_work_sync(&conn->auto_accept_work); |
a74a84f6 | 1143 | cancel_delayed_work_sync(&conn->idle_work); |
9f61656a | 1144 | |
5b7f9909 | 1145 | if (conn->type == ACL_LINK) { |
1da177e4 LT |
1146 | /* Unacked frames */ |
1147 | hdev->acl_cnt += conn->sent; | |
6ed58ec5 | 1148 | } else if (conn->type == LE_LINK) { |
980ffc0a | 1149 | cancel_delayed_work(&conn->le_conn_timeout); |
9489eca4 | 1150 | |
6ed58ec5 VT |
1151 | if (hdev->le_pkts) |
1152 | hdev->le_cnt += conn->sent; | |
1153 | else | |
1154 | hdev->acl_cnt += conn->sent; | |
5b7f9909 | 1155 | } else { |
5638d9ea LAD |
1156 | /* Unacked ISO frames */ |
1157 | if (conn->type == ISO_LINK) { | |
1158 | if (hdev->iso_pkts) | |
1159 | hdev->iso_cnt += conn->sent; | |
1160 | else if (hdev->le_pkts) | |
1161 | hdev->le_cnt += conn->sent; | |
1162 | else | |
1163 | hdev->acl_cnt += conn->sent; | |
1164 | } | |
1da177e4 LT |
1165 | } |
1166 | ||
9740e49d AE |
1167 | if (conn->amp_mgr) |
1168 | amp_mgr_put(conn->amp_mgr); | |
1169 | ||
1da177e4 | 1170 | skb_queue_purge(&conn->data_q); |
1da177e4 | 1171 | |
b958f9a3 JH |
1172 | /* Remove the connection from the list and cleanup its remaining |
1173 | * state. This is a separate function since for some cases like | |
1174 | * BT_CONNECT_SCAN we *only* want the cleanup part without the | |
1175 | * rest of hci_conn_del. | |
1176 | */ | |
1177 | hci_conn_cleanup(conn); | |
1da177e4 LT |
1178 | } |
1179 | ||
39385cb5 | 1180 | struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, uint8_t src_type) |
1da177e4 LT |
1181 | { |
1182 | int use_src = bacmp(src, BDADDR_ANY); | |
8035ded4 | 1183 | struct hci_dev *hdev = NULL, *d; |
1da177e4 | 1184 | |
6ed93dc6 | 1185 | BT_DBG("%pMR -> %pMR", src, dst); |
1da177e4 | 1186 | |
f20d09d5 | 1187 | read_lock(&hci_dev_list_lock); |
1da177e4 | 1188 | |
8035ded4 | 1189 | list_for_each_entry(d, &hci_dev_list, list) { |
8fc9ced3 | 1190 | if (!test_bit(HCI_UP, &d->flags) || |
d7a5a11d | 1191 | hci_dev_test_flag(d, HCI_USER_CHANNEL) || |
ca8bee5d | 1192 | d->dev_type != HCI_PRIMARY) |
1da177e4 LT |
1193 | continue; |
1194 | ||
8e87d142 | 1195 | /* Simple routing: |
1da177e4 LT |
1196 | * No source address - find interface with bdaddr != dst |
1197 | * Source address - find interface with bdaddr == src | |
1198 | */ | |
1199 | ||
1200 | if (use_src) { | |
39385cb5 JH |
1201 | bdaddr_t id_addr; |
1202 | u8 id_addr_type; | |
1203 | ||
1204 | if (src_type == BDADDR_BREDR) { | |
1205 | if (!lmp_bredr_capable(d)) | |
1206 | continue; | |
1207 | bacpy(&id_addr, &d->bdaddr); | |
1208 | id_addr_type = BDADDR_BREDR; | |
1209 | } else { | |
1210 | if (!lmp_le_capable(d)) | |
1211 | continue; | |
1212 | ||
1213 | hci_copy_identity_address(d, &id_addr, | |
1214 | &id_addr_type); | |
1215 | ||
1216 | /* Convert from HCI to three-value type */ | |
1217 | if (id_addr_type == ADDR_LE_DEV_PUBLIC) | |
1218 | id_addr_type = BDADDR_LE_PUBLIC; | |
1219 | else | |
1220 | id_addr_type = BDADDR_LE_RANDOM; | |
1221 | } | |
1222 | ||
1223 | if (!bacmp(&id_addr, src) && id_addr_type == src_type) { | |
1da177e4 LT |
1224 | hdev = d; break; |
1225 | } | |
1226 | } else { | |
1227 | if (bacmp(&d->bdaddr, dst)) { | |
1228 | hdev = d; break; | |
1229 | } | |
1230 | } | |
1231 | } | |
1232 | ||
1233 | if (hdev) | |
1234 | hdev = hci_dev_hold(hdev); | |
1235 | ||
f20d09d5 | 1236 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
1237 | return hdev; |
1238 | } | |
1239 | EXPORT_SYMBOL(hci_get_route); | |
1240 | ||
9bb3c01f | 1241 | /* This function requires the caller holds hdev->lock */ |
9b3628d7 | 1242 | static void hci_le_conn_failed(struct hci_conn *conn, u8 status) |
9bb3c01f AG |
1243 | { |
1244 | struct hci_dev *hdev = conn->hdev; | |
f161dd41 | 1245 | |
19cf60bf | 1246 | hci_connect_le_scan_cleanup(conn, status); |
3c857757 | 1247 | |
abfeea47 | 1248 | /* Enable advertising in case this was a failed connection |
3c857757 JH |
1249 | * attempt as a peripheral. |
1250 | */ | |
abfeea47 | 1251 | hci_enable_advertising(hdev); |
9bb3c01f AG |
1252 | } |
1253 | ||
9b3628d7 LAD |
1254 | /* This function requires the caller holds hdev->lock */ |
1255 | void hci_conn_failed(struct hci_conn *conn, u8 status) | |
1256 | { | |
1257 | struct hci_dev *hdev = conn->hdev; | |
1258 | ||
1259 | bt_dev_dbg(hdev, "status 0x%2.2x", status); | |
1260 | ||
1261 | switch (conn->type) { | |
1262 | case LE_LINK: | |
1263 | hci_le_conn_failed(conn, status); | |
1264 | break; | |
1265 | case ACL_LINK: | |
1266 | mgmt_connect_failed(hdev, &conn->dst, conn->type, | |
1267 | conn->dst_type, status); | |
1268 | break; | |
1269 | } | |
1270 | ||
1271 | conn->state = BT_CLOSED; | |
1272 | hci_connect_cfm(conn, status); | |
1273 | hci_conn_del(conn); | |
1274 | } | |
1275 | ||
8e8b92ee | 1276 | static void create_le_conn_complete(struct hci_dev *hdev, void *data, int err) |
1d399ae5 | 1277 | { |
8e8b92ee | 1278 | struct hci_conn *conn = data; |
1d399ae5 | 1279 | |
b62e7220 LAD |
1280 | bt_dev_dbg(hdev, "err %d", err); |
1281 | ||
28a667c9 JP |
1282 | hci_dev_lock(hdev); |
1283 | ||
8e8b92ee | 1284 | if (!err) { |
19cf60bf | 1285 | hci_connect_le_scan_cleanup(conn, 0x00); |
28a667c9 JP |
1286 | goto done; |
1287 | } | |
1d399ae5 | 1288 | |
c9f73a21 LAD |
1289 | /* Check if connection is still pending */ |
1290 | if (conn != hci_lookup_le_connect(hdev)) | |
1d399ae5 AG |
1291 | goto done; |
1292 | ||
5cd39700 AP |
1293 | /* Flush to make sure we send create conn cancel command if needed */ |
1294 | flush_delayed_work(&conn->le_conn_timeout); | |
a86ddbff | 1295 | hci_conn_failed(conn, bt_status(err)); |
1d399ae5 AG |
1296 | |
1297 | done: | |
1298 | hci_dev_unlock(hdev); | |
1299 | } | |
1300 | ||
8e8b92ee | 1301 | static int hci_connect_le_sync(struct hci_dev *hdev, void *data) |
3c857757 | 1302 | { |
8e8b92ee | 1303 | struct hci_conn *conn = data; |
075e40b7 | 1304 | |
8e8b92ee | 1305 | bt_dev_dbg(hdev, "conn %p", conn); |
3c857757 | 1306 | |
8e8b92ee | 1307 | return hci_le_create_conn_sync(hdev, conn); |
3c857757 JH |
1308 | } |
1309 | ||
04a6c589 | 1310 | struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, |
d850bf08 | 1311 | u8 dst_type, bool dst_resolved, u8 sec_level, |
8e8b92ee | 1312 | u16 conn_timeout, u8 role) |
1da177e4 | 1313 | { |
e2caced4 | 1314 | struct hci_conn *conn; |
1ebfcc1f | 1315 | struct smp_irk *irk; |
1d399ae5 | 1316 | int err; |
1da177e4 | 1317 | |
152d386e | 1318 | /* Let's make sure that le is enabled.*/ |
d7a5a11d | 1319 | if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { |
152d386e LR |
1320 | if (lmp_le_capable(hdev)) |
1321 | return ERR_PTR(-ECONNREFUSED); | |
1322 | ||
1323 | return ERR_PTR(-EOPNOTSUPP); | |
1324 | } | |
1325 | ||
658aead9 JH |
1326 | /* Since the controller supports only one LE connection attempt at a |
1327 | * time, we return -EBUSY if there is any connection attempt running. | |
1328 | */ | |
1329 | if (hci_lookup_le_connect(hdev)) | |
1330 | return ERR_PTR(-EBUSY); | |
1331 | ||
e2caced4 JH |
1332 | /* If there's already a connection object but it's not in |
1333 | * scanning state it means it must already be established, in | |
1334 | * which case we can't do anything else except report a failure | |
1335 | * to connect. | |
620ad521 | 1336 | */ |
9d4c1cc1 | 1337 | conn = hci_conn_hash_lookup_le(hdev, dst, dst_type); |
e2caced4 JH |
1338 | if (conn && !test_bit(HCI_CONN_SCANNING, &conn->flags)) { |
1339 | return ERR_PTR(-EBUSY); | |
620ad521 | 1340 | } |
dfc94dbd | 1341 | |
d850bf08 LAD |
1342 | /* Check if the destination address has been resolved by the controller |
1343 | * since if it did then the identity address shall be used. | |
edb4b466 | 1344 | */ |
d850bf08 LAD |
1345 | if (!dst_resolved) { |
1346 | /* When given an identity address with existing identity | |
1347 | * resolving key, the connection needs to be established | |
1348 | * to a resolvable random address. | |
1349 | * | |
1350 | * Storing the resolvable random address is required here | |
1351 | * to handle connection failures. The address will later | |
1352 | * be resolved back into the original identity address | |
1353 | * from the connect request. | |
1354 | */ | |
1355 | irk = hci_find_irk_by_addr(hdev, dst, dst_type); | |
1356 | if (irk && bacmp(&irk->rpa, BDADDR_ANY)) { | |
1357 | dst = &irk->rpa; | |
1358 | dst_type = ADDR_LE_DEV_RANDOM; | |
1359 | } | |
1ebfcc1f JH |
1360 | } |
1361 | ||
e2caced4 | 1362 | if (conn) { |
28a667c9 JP |
1363 | bacpy(&conn->dst, dst); |
1364 | } else { | |
1365 | conn = hci_conn_add(hdev, LE_LINK, dst, role); | |
e2caced4 JH |
1366 | if (!conn) |
1367 | return ERR_PTR(-ENOMEM); | |
1368 | hci_conn_hold(conn); | |
1369 | conn->pending_sec_level = sec_level; | |
28a667c9 JP |
1370 | } |
1371 | ||
1ebfcc1f | 1372 | conn->dst_type = dst_type; |
620ad521 | 1373 | conn->sec_level = BT_SECURITY_LOW; |
09ae260b | 1374 | conn->conn_timeout = conn_timeout; |
4292f1f3 | 1375 | |
8e8b92ee LAD |
1376 | conn->state = BT_CONNECT; |
1377 | clear_bit(HCI_CONN_SCANNING, &conn->flags); | |
81ad6fd9 | 1378 | |
8e8b92ee LAD |
1379 | err = hci_cmd_sync_queue(hdev, hci_connect_le_sync, conn, |
1380 | create_le_conn_complete); | |
2acf3d90 AG |
1381 | if (err) { |
1382 | hci_conn_del(conn); | |
620ad521 | 1383 | return ERR_PTR(err); |
2acf3d90 | 1384 | } |
fcd89c09 | 1385 | |
f1e5d547 | 1386 | return conn; |
d04aef4c | 1387 | } |
fcd89c09 | 1388 | |
f75113a2 JP |
1389 | static bool is_connected(struct hci_dev *hdev, bdaddr_t *addr, u8 type) |
1390 | { | |
1391 | struct hci_conn *conn; | |
1392 | ||
9d4c1cc1 | 1393 | conn = hci_conn_hash_lookup_le(hdev, addr, type); |
f75113a2 JP |
1394 | if (!conn) |
1395 | return false; | |
1396 | ||
f75113a2 JP |
1397 | if (conn->state != BT_CONNECTED) |
1398 | return false; | |
1399 | ||
1400 | return true; | |
1401 | } | |
1402 | ||
1403 | /* This function requires the caller holds hdev->lock */ | |
84235d22 | 1404 | static int hci_explicit_conn_params_set(struct hci_dev *hdev, |
f75113a2 JP |
1405 | bdaddr_t *addr, u8 addr_type) |
1406 | { | |
f75113a2 JP |
1407 | struct hci_conn_params *params; |
1408 | ||
1409 | if (is_connected(hdev, addr, addr_type)) | |
1410 | return -EISCONN; | |
1411 | ||
5157b8a5 JP |
1412 | params = hci_conn_params_lookup(hdev, addr, addr_type); |
1413 | if (!params) { | |
1414 | params = hci_conn_params_add(hdev, addr, addr_type); | |
1415 | if (!params) | |
1416 | return -ENOMEM; | |
1417 | ||
1418 | /* If we created new params, mark them to be deleted in | |
1419 | * hci_connect_le_scan_cleanup. It's different case than | |
1420 | * existing disabled params, those will stay after cleanup. | |
1421 | */ | |
1422 | params->auto_connect = HCI_AUTO_CONN_EXPLICIT; | |
1423 | } | |
f75113a2 | 1424 | |
5157b8a5 | 1425 | /* We're trying to connect, so make sure params are at pend_le_conns */ |
49c50922 | 1426 | if (params->auto_connect == HCI_AUTO_CONN_DISABLED || |
5157b8a5 JP |
1427 | params->auto_connect == HCI_AUTO_CONN_REPORT || |
1428 | params->auto_connect == HCI_AUTO_CONN_EXPLICIT) { | |
195ef75e PV |
1429 | hci_pend_le_list_del_init(params); |
1430 | hci_pend_le_list_add(params, &hdev->pend_le_conns); | |
f75113a2 JP |
1431 | } |
1432 | ||
1433 | params->explicit_connect = true; | |
f75113a2 JP |
1434 | |
1435 | BT_DBG("addr %pMR (type %u) auto_connect %u", addr, addr_type, | |
1436 | params->auto_connect); | |
1437 | ||
1438 | return 0; | |
1439 | } | |
1440 | ||
eca0ae4a LAD |
1441 | static int qos_set_big(struct hci_dev *hdev, struct bt_iso_qos *qos) |
1442 | { | |
1443 | struct iso_list_data data; | |
1444 | ||
1445 | /* Allocate a BIG if not set */ | |
0fe8c8d0 | 1446 | if (qos->bcast.big == BT_ISO_QOS_BIG_UNSET) { |
eca0ae4a LAD |
1447 | for (data.big = 0x00; data.big < 0xef; data.big++) { |
1448 | data.count = 0; | |
1449 | data.bis = 0xff; | |
1450 | ||
1451 | hci_conn_hash_list_state(hdev, bis_list, ISO_LINK, | |
1452 | BT_BOUND, &data); | |
1453 | if (!data.count) | |
1454 | break; | |
1455 | } | |
1456 | ||
1457 | if (data.big == 0xef) | |
1458 | return -EADDRNOTAVAIL; | |
1459 | ||
1460 | /* Update BIG */ | |
0fe8c8d0 | 1461 | qos->bcast.big = data.big; |
eca0ae4a LAD |
1462 | } |
1463 | ||
1464 | return 0; | |
1465 | } | |
1466 | ||
1467 | static int qos_set_bis(struct hci_dev *hdev, struct bt_iso_qos *qos) | |
1468 | { | |
1469 | struct iso_list_data data; | |
1470 | ||
1471 | /* Allocate BIS if not set */ | |
0fe8c8d0 | 1472 | if (qos->bcast.bis == BT_ISO_QOS_BIS_UNSET) { |
eca0ae4a LAD |
1473 | /* Find an unused adv set to advertise BIS, skip instance 0x00 |
1474 | * since it is reserved as general purpose set. | |
1475 | */ | |
1476 | for (data.bis = 0x01; data.bis < hdev->le_num_of_adv_sets; | |
1477 | data.bis++) { | |
1478 | data.count = 0; | |
1479 | ||
1480 | hci_conn_hash_list_state(hdev, bis_list, ISO_LINK, | |
1481 | BT_BOUND, &data); | |
1482 | if (!data.count) | |
1483 | break; | |
1484 | } | |
1485 | ||
1486 | if (data.bis == hdev->le_num_of_adv_sets) | |
1487 | return -EADDRNOTAVAIL; | |
1488 | ||
1489 | /* Update BIS */ | |
0fe8c8d0 | 1490 | qos->bcast.bis = data.bis; |
eca0ae4a LAD |
1491 | } |
1492 | ||
1493 | return 0; | |
1494 | } | |
1495 | ||
1496 | /* This function requires the caller holds hdev->lock */ | |
1497 | static struct hci_conn *hci_add_bis(struct hci_dev *hdev, bdaddr_t *dst, | |
1498 | struct bt_iso_qos *qos) | |
1499 | { | |
1500 | struct hci_conn *conn; | |
1501 | struct iso_list_data data; | |
1502 | int err; | |
1503 | ||
1504 | /* Let's make sure that le is enabled.*/ | |
1505 | if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { | |
1506 | if (lmp_le_capable(hdev)) | |
1507 | return ERR_PTR(-ECONNREFUSED); | |
1508 | return ERR_PTR(-EOPNOTSUPP); | |
1509 | } | |
1510 | ||
1511 | err = qos_set_big(hdev, qos); | |
1512 | if (err) | |
1513 | return ERR_PTR(err); | |
1514 | ||
1515 | err = qos_set_bis(hdev, qos); | |
1516 | if (err) | |
1517 | return ERR_PTR(err); | |
1518 | ||
0fe8c8d0 IT |
1519 | data.big = qos->bcast.big; |
1520 | data.bis = qos->bcast.bis; | |
eca0ae4a LAD |
1521 | data.count = 0; |
1522 | ||
1523 | /* Check if there is already a matching BIG/BIS */ | |
1524 | hci_conn_hash_list_state(hdev, bis_list, ISO_LINK, BT_BOUND, &data); | |
1525 | if (data.count) | |
1526 | return ERR_PTR(-EADDRINUSE); | |
1527 | ||
0fe8c8d0 | 1528 | conn = hci_conn_hash_lookup_bis(hdev, dst, qos->bcast.big, qos->bcast.bis); |
eca0ae4a LAD |
1529 | if (conn) |
1530 | return ERR_PTR(-EADDRINUSE); | |
1531 | ||
1532 | conn = hci_conn_add(hdev, ISO_LINK, dst, HCI_ROLE_MASTER); | |
1533 | if (!conn) | |
1534 | return ERR_PTR(-ENOMEM); | |
1535 | ||
1536 | set_bit(HCI_CONN_PER_ADV, &conn->flags); | |
1537 | conn->state = BT_CONNECT; | |
1538 | ||
1539 | hci_conn_hold(conn); | |
1540 | return conn; | |
1541 | } | |
1542 | ||
f75113a2 JP |
1543 | /* This function requires the caller holds hdev->lock */ |
1544 | struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, | |
1545 | u8 dst_type, u8 sec_level, | |
76b13996 MM |
1546 | u16 conn_timeout, |
1547 | enum conn_reasons conn_reason) | |
f75113a2 JP |
1548 | { |
1549 | struct hci_conn *conn; | |
f75113a2 JP |
1550 | |
1551 | /* Let's make sure that le is enabled.*/ | |
1552 | if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { | |
1553 | if (lmp_le_capable(hdev)) | |
1554 | return ERR_PTR(-ECONNREFUSED); | |
1555 | ||
1556 | return ERR_PTR(-EOPNOTSUPP); | |
1557 | } | |
1558 | ||
1559 | /* Some devices send ATT messages as soon as the physical link is | |
1560 | * established. To be able to handle these ATT messages, the user- | |
1561 | * space first establishes the connection and then starts the pairing | |
1562 | * process. | |
1563 | * | |
1564 | * So if a hci_conn object already exists for the following connection | |
1565 | * attempt, we simply update pending_sec_level and auth_type fields | |
1566 | * and return the object found. | |
1567 | */ | |
9d4c1cc1 | 1568 | conn = hci_conn_hash_lookup_le(hdev, dst, dst_type); |
f75113a2 JP |
1569 | if (conn) { |
1570 | if (conn->pending_sec_level < sec_level) | |
1571 | conn->pending_sec_level = sec_level; | |
1572 | goto done; | |
1573 | } | |
1574 | ||
1575 | BT_DBG("requesting refresh of dst_addr"); | |
1576 | ||
0ad06aa6 | 1577 | conn = hci_conn_add(hdev, LE_LINK, dst, HCI_ROLE_MASTER); |
f75113a2 JP |
1578 | if (!conn) |
1579 | return ERR_PTR(-ENOMEM); | |
1580 | ||
d088337c NE |
1581 | if (hci_explicit_conn_params_set(hdev, dst, dst_type) < 0) { |
1582 | hci_conn_del(conn); | |
f75113a2 | 1583 | return ERR_PTR(-EBUSY); |
d088337c | 1584 | } |
f75113a2 JP |
1585 | |
1586 | conn->state = BT_CONNECT; | |
1587 | set_bit(HCI_CONN_SCANNING, &conn->flags); | |
f75113a2 JP |
1588 | conn->dst_type = dst_type; |
1589 | conn->sec_level = BT_SECURITY_LOW; | |
1590 | conn->pending_sec_level = sec_level; | |
1591 | conn->conn_timeout = conn_timeout; | |
76b13996 | 1592 | conn->conn_reason = conn_reason; |
f75113a2 | 1593 | |
5bee2fd6 | 1594 | hci_update_passive_scan(hdev); |
84235d22 | 1595 | |
f75113a2 JP |
1596 | done: |
1597 | hci_conn_hold(conn); | |
1598 | return conn; | |
1599 | } | |
1600 | ||
04a6c589 | 1601 | struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, |
76b13996 MM |
1602 | u8 sec_level, u8 auth_type, |
1603 | enum conn_reasons conn_reason) | |
1da177e4 LT |
1604 | { |
1605 | struct hci_conn *acl; | |
fcd89c09 | 1606 | |
d7a5a11d | 1607 | if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { |
c411110e LR |
1608 | if (lmp_bredr_capable(hdev)) |
1609 | return ERR_PTR(-ECONNREFUSED); | |
1610 | ||
beb19e4c | 1611 | return ERR_PTR(-EOPNOTSUPP); |
c411110e | 1612 | } |
56f87901 | 1613 | |
70f23020 AE |
1614 | acl = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst); |
1615 | if (!acl) { | |
a5c4e309 | 1616 | acl = hci_conn_add(hdev, ACL_LINK, dst, HCI_ROLE_MASTER); |
70f23020 | 1617 | if (!acl) |
48c7aba9 | 1618 | return ERR_PTR(-ENOMEM); |
1da177e4 LT |
1619 | } |
1620 | ||
1621 | hci_conn_hold(acl); | |
1622 | ||
76b13996 | 1623 | acl->conn_reason = conn_reason; |
09ab6f4c | 1624 | if (acl->state == BT_OPEN || acl->state == BT_CLOSED) { |
765c2a96 JH |
1625 | acl->sec_level = BT_SECURITY_LOW; |
1626 | acl->pending_sec_level = sec_level; | |
09ab6f4c | 1627 | acl->auth_type = auth_type; |
1aef8669 | 1628 | hci_acl_create_connection(acl); |
09ab6f4c | 1629 | } |
1da177e4 | 1630 | |
db474275 VCG |
1631 | return acl; |
1632 | } | |
1633 | ||
06149746 LAD |
1634 | static struct hci_link *hci_conn_link(struct hci_conn *parent, |
1635 | struct hci_conn *conn) | |
1636 | { | |
1637 | struct hci_dev *hdev = parent->hdev; | |
1638 | struct hci_link *link; | |
1639 | ||
1640 | bt_dev_dbg(hdev, "parent %p hcon %p", parent, conn); | |
1641 | ||
1642 | if (conn->link) | |
1643 | return conn->link; | |
1644 | ||
1645 | if (conn->parent) | |
1646 | return NULL; | |
1647 | ||
1648 | link = kzalloc(sizeof(*link), GFP_KERNEL); | |
1649 | if (!link) | |
1650 | return NULL; | |
1651 | ||
1652 | link->conn = hci_conn_hold(conn); | |
1653 | conn->link = link; | |
1654 | conn->parent = hci_conn_get(parent); | |
1655 | ||
1656 | /* Use list_add_tail_rcu append to the list */ | |
1657 | list_add_tail_rcu(&link->list, &parent->link_list); | |
1658 | ||
1659 | return link; | |
1660 | } | |
1661 | ||
10c62ddc | 1662 | struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, |
b2af264a | 1663 | __u16 setting, struct bt_codec *codec) |
db474275 VCG |
1664 | { |
1665 | struct hci_conn *acl; | |
1666 | struct hci_conn *sco; | |
06149746 | 1667 | struct hci_link *link; |
db474275 | 1668 | |
76b13996 MM |
1669 | acl = hci_connect_acl(hdev, dst, BT_SECURITY_LOW, HCI_AT_NO_BONDING, |
1670 | CONN_REASON_SCO_CONNECT); | |
db474275 | 1671 | if (IS_ERR(acl)) |
5b7f9909 | 1672 | return acl; |
1da177e4 | 1673 | |
70f23020 AE |
1674 | sco = hci_conn_hash_lookup_ba(hdev, type, dst); |
1675 | if (!sco) { | |
a5c4e309 | 1676 | sco = hci_conn_add(hdev, type, dst, HCI_ROLE_MASTER); |
70f23020 | 1677 | if (!sco) { |
76a68ba0 | 1678 | hci_conn_drop(acl); |
48c7aba9 | 1679 | return ERR_PTR(-ENOMEM); |
1da177e4 | 1680 | } |
5b7f9909 | 1681 | } |
1da177e4 | 1682 | |
06149746 LAD |
1683 | link = hci_conn_link(acl, sco); |
1684 | if (!link) { | |
1685 | hci_conn_drop(acl); | |
1686 | hci_conn_drop(sco); | |
1687 | return NULL; | |
1688 | } | |
1da177e4 | 1689 | |
10c62ddc | 1690 | sco->setting = setting; |
b2af264a | 1691 | sco->codec = *codec; |
10c62ddc | 1692 | |
5b7f9909 | 1693 | if (acl->state == BT_CONNECTED && |
5974e4c4 | 1694 | (sco->state == BT_OPEN || sco->state == BT_CLOSED)) { |
58a681ef | 1695 | set_bit(HCI_CONN_POWER_SAVE, &acl->flags); |
14b12d0b | 1696 | hci_conn_enter_active_mode(acl, BT_POWER_FORCE_ACTIVE_ON); |
c390216b | 1697 | |
51a8efd7 | 1698 | if (test_bit(HCI_CONN_MODE_CHANGE_PEND, &acl->flags)) { |
e73439d8 | 1699 | /* defer SCO setup until mode change completed */ |
51a8efd7 | 1700 | set_bit(HCI_CONN_SCO_SETUP_PEND, &acl->flags); |
e73439d8 MH |
1701 | return sco; |
1702 | } | |
1703 | ||
1704 | hci_sco_setup(acl, 0x00); | |
b6a0dc82 | 1705 | } |
5b7f9909 MH |
1706 | |
1707 | return sco; | |
1da177e4 | 1708 | } |
1da177e4 | 1709 | |
26afbd82 LAD |
1710 | static void cis_add(struct iso_list_data *d, struct bt_iso_qos *qos) |
1711 | { | |
1712 | struct hci_cis_params *cis = &d->pdu.cis[d->pdu.cp.num_cis]; | |
1713 | ||
0fe8c8d0 IT |
1714 | cis->cis_id = qos->ucast.cis; |
1715 | cis->c_sdu = cpu_to_le16(qos->ucast.out.sdu); | |
1716 | cis->p_sdu = cpu_to_le16(qos->ucast.in.sdu); | |
1717 | cis->c_phy = qos->ucast.out.phy ? qos->ucast.out.phy : qos->ucast.in.phy; | |
1718 | cis->p_phy = qos->ucast.in.phy ? qos->ucast.in.phy : qos->ucast.out.phy; | |
1719 | cis->c_rtn = qos->ucast.out.rtn; | |
1720 | cis->p_rtn = qos->ucast.in.rtn; | |
26afbd82 LAD |
1721 | |
1722 | d->pdu.cp.num_cis++; | |
1723 | } | |
1724 | ||
1725 | static void cis_list(struct hci_conn *conn, void *data) | |
1726 | { | |
1727 | struct iso_list_data *d = data; | |
1728 | ||
eca0ae4a LAD |
1729 | /* Skip if broadcast/ANY address */ |
1730 | if (!bacmp(&conn->dst, BDADDR_ANY)) | |
1731 | return; | |
1732 | ||
0fe8c8d0 IT |
1733 | if (d->cig != conn->iso_qos.ucast.cig || d->cis == BT_ISO_QOS_CIS_UNSET || |
1734 | d->cis != conn->iso_qos.ucast.cis) | |
26afbd82 LAD |
1735 | return; |
1736 | ||
1737 | d->count++; | |
1738 | ||
1739 | if (d->pdu.cp.cig_id == BT_ISO_QOS_CIG_UNSET || | |
1740 | d->count >= ARRAY_SIZE(d->pdu.cis)) | |
1741 | return; | |
1742 | ||
1743 | cis_add(d, &conn->iso_qos); | |
1744 | } | |
1745 | ||
eca0ae4a LAD |
1746 | static int hci_le_create_big(struct hci_conn *conn, struct bt_iso_qos *qos) |
1747 | { | |
1748 | struct hci_dev *hdev = conn->hdev; | |
1749 | struct hci_cp_le_create_big cp; | |
1750 | ||
1751 | memset(&cp, 0, sizeof(cp)); | |
1752 | ||
0fe8c8d0 IT |
1753 | cp.handle = qos->bcast.big; |
1754 | cp.adv_handle = qos->bcast.bis; | |
eca0ae4a | 1755 | cp.num_bis = 0x01; |
0fe8c8d0 IT |
1756 | hci_cpu_to_le24(qos->bcast.out.interval, cp.bis.sdu_interval); |
1757 | cp.bis.sdu = cpu_to_le16(qos->bcast.out.sdu); | |
1758 | cp.bis.latency = cpu_to_le16(qos->bcast.out.latency); | |
1759 | cp.bis.rtn = qos->bcast.out.rtn; | |
1760 | cp.bis.phy = qos->bcast.out.phy; | |
1761 | cp.bis.packing = qos->bcast.packing; | |
1762 | cp.bis.framing = qos->bcast.framing; | |
1763 | cp.bis.encryption = qos->bcast.encryption; | |
1764 | memcpy(cp.bis.bcode, qos->bcast.bcode, sizeof(cp.bis.bcode)); | |
eca0ae4a LAD |
1765 | |
1766 | return hci_send_cmd(hdev, HCI_OP_LE_CREATE_BIG, sizeof(cp), &cp); | |
1767 | } | |
1768 | ||
6b9545dc PV |
1769 | static void set_cig_params_complete(struct hci_dev *hdev, void *data, int err) |
1770 | { | |
1771 | struct iso_cig_params *pdu = data; | |
1772 | ||
1773 | bt_dev_dbg(hdev, ""); | |
1774 | ||
1775 | if (err) | |
1776 | bt_dev_err(hdev, "Unable to set CIG parameters: %d", err); | |
1777 | ||
1778 | kfree(pdu); | |
1779 | } | |
1780 | ||
1781 | static int set_cig_params_sync(struct hci_dev *hdev, void *data) | |
1782 | { | |
1783 | struct iso_cig_params *pdu = data; | |
1784 | u32 plen; | |
1785 | ||
1786 | plen = sizeof(pdu->cp) + pdu->cp.num_cis * sizeof(pdu->cis[0]); | |
1787 | return __hci_cmd_sync_status(hdev, HCI_OP_LE_SET_CIG_PARAMS, plen, pdu, | |
1788 | HCI_CMD_TIMEOUT); | |
1789 | } | |
1790 | ||
26afbd82 LAD |
1791 | static bool hci_le_set_cig_params(struct hci_conn *conn, struct bt_iso_qos *qos) |
1792 | { | |
1793 | struct hci_dev *hdev = conn->hdev; | |
1794 | struct iso_list_data data; | |
6b9545dc | 1795 | struct iso_cig_params *pdu; |
26afbd82 LAD |
1796 | |
1797 | memset(&data, 0, sizeof(data)); | |
1798 | ||
e6a7a46b | 1799 | /* Allocate first still reconfigurable CIG if not set */ |
0fe8c8d0 | 1800 | if (qos->ucast.cig == BT_ISO_QOS_CIG_UNSET) { |
e6a7a46b | 1801 | for (data.cig = 0x00; data.cig < 0xf0; data.cig++) { |
26afbd82 | 1802 | data.count = 0; |
26afbd82 | 1803 | |
e6a7a46b PV |
1804 | hci_conn_hash_list_state(hdev, find_cis, ISO_LINK, |
1805 | BT_CONNECT, &data); | |
26afbd82 LAD |
1806 | if (data.count) |
1807 | continue; | |
1808 | ||
e6a7a46b | 1809 | hci_conn_hash_list_state(hdev, find_cis, ISO_LINK, |
26afbd82 LAD |
1810 | BT_CONNECTED, &data); |
1811 | if (!data.count) | |
1812 | break; | |
1813 | } | |
1814 | ||
e6a7a46b | 1815 | if (data.cig == 0xf0) |
26afbd82 LAD |
1816 | return false; |
1817 | ||
1818 | /* Update CIG */ | |
0fe8c8d0 | 1819 | qos->ucast.cig = data.cig; |
26afbd82 LAD |
1820 | } |
1821 | ||
0fe8c8d0 IT |
1822 | data.pdu.cp.cig_id = qos->ucast.cig; |
1823 | hci_cpu_to_le24(qos->ucast.out.interval, data.pdu.cp.c_interval); | |
1824 | hci_cpu_to_le24(qos->ucast.in.interval, data.pdu.cp.p_interval); | |
1825 | data.pdu.cp.sca = qos->ucast.sca; | |
1826 | data.pdu.cp.packing = qos->ucast.packing; | |
1827 | data.pdu.cp.framing = qos->ucast.framing; | |
1828 | data.pdu.cp.c_latency = cpu_to_le16(qos->ucast.out.latency); | |
1829 | data.pdu.cp.p_latency = cpu_to_le16(qos->ucast.in.latency); | |
26afbd82 | 1830 | |
0fe8c8d0 | 1831 | if (qos->ucast.cis != BT_ISO_QOS_CIS_UNSET) { |
26afbd82 | 1832 | data.count = 0; |
0fe8c8d0 IT |
1833 | data.cig = qos->ucast.cig; |
1834 | data.cis = qos->ucast.cis; | |
26afbd82 LAD |
1835 | |
1836 | hci_conn_hash_list_state(hdev, cis_list, ISO_LINK, BT_BOUND, | |
1837 | &data); | |
1838 | if (data.count) | |
1839 | return false; | |
1840 | ||
1841 | cis_add(&data, qos); | |
1842 | } | |
1843 | ||
1844 | /* Reprogram all CIS(s) with the same CIG */ | |
0fe8c8d0 | 1845 | for (data.cig = qos->ucast.cig, data.cis = 0x00; data.cis < 0x11; |
26afbd82 LAD |
1846 | data.cis++) { |
1847 | data.count = 0; | |
1848 | ||
1849 | hci_conn_hash_list_state(hdev, cis_list, ISO_LINK, BT_BOUND, | |
1850 | &data); | |
1851 | if (data.count) | |
1852 | continue; | |
1853 | ||
1854 | /* Allocate a CIS if not set */ | |
0fe8c8d0 | 1855 | if (qos->ucast.cis == BT_ISO_QOS_CIS_UNSET) { |
26afbd82 | 1856 | /* Update CIS */ |
0fe8c8d0 | 1857 | qos->ucast.cis = data.cis; |
26afbd82 LAD |
1858 | cis_add(&data, qos); |
1859 | } | |
1860 | } | |
1861 | ||
0fe8c8d0 | 1862 | if (qos->ucast.cis == BT_ISO_QOS_CIS_UNSET || !data.pdu.cp.num_cis) |
26afbd82 LAD |
1863 | return false; |
1864 | ||
5b6d345d | 1865 | pdu = kmemdup(&data.pdu, sizeof(*pdu), GFP_KERNEL); |
6b9545dc | 1866 | if (!pdu) |
26afbd82 LAD |
1867 | return false; |
1868 | ||
6b9545dc PV |
1869 | if (hci_cmd_sync_queue(hdev, set_cig_params_sync, pdu, |
1870 | set_cig_params_complete) < 0) { | |
1871 | kfree(pdu); | |
1872 | return false; | |
1873 | } | |
1874 | ||
26afbd82 LAD |
1875 | return true; |
1876 | } | |
1877 | ||
26afbd82 LAD |
1878 | struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst, |
1879 | __u8 dst_type, struct bt_iso_qos *qos) | |
1880 | { | |
1881 | struct hci_conn *cis; | |
1882 | ||
c14516fa LAD |
1883 | cis = hci_conn_hash_lookup_cis(hdev, dst, dst_type, qos->ucast.cig, |
1884 | qos->ucast.cis); | |
26afbd82 LAD |
1885 | if (!cis) { |
1886 | cis = hci_conn_add(hdev, ISO_LINK, dst, HCI_ROLE_MASTER); | |
1887 | if (!cis) | |
1888 | return ERR_PTR(-ENOMEM); | |
1889 | cis->cleanup = cis_cleanup; | |
b36a234d | 1890 | cis->dst_type = dst_type; |
26afbd82 LAD |
1891 | } |
1892 | ||
1893 | if (cis->state == BT_CONNECTED) | |
1894 | return cis; | |
1895 | ||
1896 | /* Check if CIS has been set and the settings matches */ | |
1897 | if (cis->state == BT_BOUND && | |
1898 | !memcmp(&cis->iso_qos, qos, sizeof(*qos))) | |
1899 | return cis; | |
1900 | ||
1901 | /* Update LINK PHYs according to QoS preference */ | |
0fe8c8d0 IT |
1902 | cis->le_tx_phy = qos->ucast.out.phy; |
1903 | cis->le_rx_phy = qos->ucast.in.phy; | |
26afbd82 LAD |
1904 | |
1905 | /* If output interval is not set use the input interval as it cannot be | |
1906 | * 0x000000. | |
1907 | */ | |
0fe8c8d0 IT |
1908 | if (!qos->ucast.out.interval) |
1909 | qos->ucast.out.interval = qos->ucast.in.interval; | |
26afbd82 LAD |
1910 | |
1911 | /* If input interval is not set use the output interval as it cannot be | |
1912 | * 0x000000. | |
1913 | */ | |
0fe8c8d0 IT |
1914 | if (!qos->ucast.in.interval) |
1915 | qos->ucast.in.interval = qos->ucast.out.interval; | |
26afbd82 LAD |
1916 | |
1917 | /* If output latency is not set use the input latency as it cannot be | |
1918 | * 0x0000. | |
1919 | */ | |
0fe8c8d0 IT |
1920 | if (!qos->ucast.out.latency) |
1921 | qos->ucast.out.latency = qos->ucast.in.latency; | |
26afbd82 LAD |
1922 | |
1923 | /* If input latency is not set use the output latency as it cannot be | |
1924 | * 0x0000. | |
1925 | */ | |
0fe8c8d0 IT |
1926 | if (!qos->ucast.in.latency) |
1927 | qos->ucast.in.latency = qos->ucast.out.latency; | |
26afbd82 | 1928 | |
26afbd82 LAD |
1929 | if (!hci_le_set_cig_params(cis, qos)) { |
1930 | hci_conn_drop(cis); | |
1931 | return ERR_PTR(-EINVAL); | |
1932 | } | |
1933 | ||
1934 | cis->iso_qos = *qos; | |
1935 | cis->state = BT_BOUND; | |
1936 | ||
1937 | return cis; | |
1938 | } | |
1939 | ||
1940 | bool hci_iso_setup_path(struct hci_conn *conn) | |
1941 | { | |
1942 | struct hci_dev *hdev = conn->hdev; | |
1943 | struct hci_cp_le_setup_iso_path cmd; | |
1944 | ||
1945 | memset(&cmd, 0, sizeof(cmd)); | |
1946 | ||
0fe8c8d0 | 1947 | if (conn->iso_qos.ucast.out.sdu) { |
26afbd82 LAD |
1948 | cmd.handle = cpu_to_le16(conn->handle); |
1949 | cmd.direction = 0x00; /* Input (Host to Controller) */ | |
1950 | cmd.path = 0x00; /* HCI path if enabled */ | |
1951 | cmd.codec = 0x03; /* Transparent Data */ | |
1952 | ||
1953 | if (hci_send_cmd(hdev, HCI_OP_LE_SETUP_ISO_PATH, sizeof(cmd), | |
1954 | &cmd) < 0) | |
1955 | return false; | |
1956 | } | |
1957 | ||
0fe8c8d0 | 1958 | if (conn->iso_qos.ucast.in.sdu) { |
26afbd82 LAD |
1959 | cmd.handle = cpu_to_le16(conn->handle); |
1960 | cmd.direction = 0x01; /* Output (Controller to Host) */ | |
1961 | cmd.path = 0x00; /* HCI path if enabled */ | |
1962 | cmd.codec = 0x03; /* Transparent Data */ | |
1963 | ||
1964 | if (hci_send_cmd(hdev, HCI_OP_LE_SETUP_ISO_PATH, sizeof(cmd), | |
1965 | &cmd) < 0) | |
1966 | return false; | |
1967 | } | |
1968 | ||
1969 | return true; | |
1970 | } | |
1971 | ||
1972 | static int hci_create_cis_sync(struct hci_dev *hdev, void *data) | |
1973 | { | |
c09b80be | 1974 | return hci_le_create_cis_sync(hdev, data); |
26afbd82 LAD |
1975 | } |
1976 | ||
1977 | int hci_le_create_cis(struct hci_conn *conn) | |
1978 | { | |
1979 | struct hci_conn *cis; | |
06149746 | 1980 | struct hci_link *link, *t; |
26afbd82 LAD |
1981 | struct hci_dev *hdev = conn->hdev; |
1982 | int err; | |
1983 | ||
06149746 LAD |
1984 | bt_dev_dbg(hdev, "hcon %p", conn); |
1985 | ||
26afbd82 LAD |
1986 | switch (conn->type) { |
1987 | case LE_LINK: | |
06149746 | 1988 | if (conn->state != BT_CONNECTED || list_empty(&conn->link_list)) |
26afbd82 | 1989 | return -EINVAL; |
06149746 LAD |
1990 | |
1991 | cis = NULL; | |
1992 | ||
1993 | /* hci_conn_link uses list_add_tail_rcu so the list is in | |
1994 | * the same order as the connections are requested. | |
1995 | */ | |
1996 | list_for_each_entry_safe(link, t, &conn->link_list, list) { | |
1997 | if (link->conn->state == BT_BOUND) { | |
1998 | err = hci_le_create_cis(link->conn); | |
1999 | if (err) | |
2000 | return err; | |
2001 | ||
2002 | cis = link->conn; | |
2003 | } | |
2004 | } | |
2005 | ||
2006 | return cis ? 0 : -EINVAL; | |
26afbd82 LAD |
2007 | case ISO_LINK: |
2008 | cis = conn; | |
2009 | break; | |
2010 | default: | |
2011 | return -EINVAL; | |
2012 | } | |
2013 | ||
2014 | if (cis->state == BT_CONNECT) | |
2015 | return 0; | |
2016 | ||
2017 | /* Queue Create CIS */ | |
2018 | err = hci_cmd_sync_queue(hdev, hci_create_cis_sync, cis, NULL); | |
2019 | if (err) | |
2020 | return err; | |
2021 | ||
2022 | cis->state = BT_CONNECT; | |
2023 | ||
2024 | return 0; | |
2025 | } | |
2026 | ||
2027 | static void hci_iso_qos_setup(struct hci_dev *hdev, struct hci_conn *conn, | |
2028 | struct bt_iso_io_qos *qos, __u8 phy) | |
2029 | { | |
2030 | /* Only set MTU if PHY is enabled */ | |
2031 | if (!qos->sdu && qos->phy) { | |
2032 | if (hdev->iso_mtu > 0) | |
2033 | qos->sdu = hdev->iso_mtu; | |
2034 | else if (hdev->le_mtu > 0) | |
2035 | qos->sdu = hdev->le_mtu; | |
2036 | else | |
2037 | qos->sdu = hdev->acl_mtu; | |
2038 | } | |
2039 | ||
2040 | /* Use the same PHY as ACL if set to any */ | |
2041 | if (qos->phy == BT_ISO_PHY_ANY) | |
2042 | qos->phy = phy; | |
2043 | ||
2044 | /* Use LE ACL connection interval if not set */ | |
2045 | if (!qos->interval) | |
2046 | /* ACL interval unit in 1.25 ms to us */ | |
2047 | qos->interval = conn->le_conn_interval * 1250; | |
2048 | ||
2049 | /* Use LE ACL connection latency if not set */ | |
2050 | if (!qos->latency) | |
2051 | qos->latency = conn->le_conn_latency; | |
2052 | } | |
2053 | ||
a00a29b0 KC |
2054 | static void hci_bind_bis(struct hci_conn *conn, |
2055 | struct bt_iso_qos *qos) | |
eca0ae4a LAD |
2056 | { |
2057 | /* Update LINK PHYs according to QoS preference */ | |
0fe8c8d0 IT |
2058 | conn->le_tx_phy = qos->bcast.out.phy; |
2059 | conn->le_tx_phy = qos->bcast.out.phy; | |
eca0ae4a LAD |
2060 | conn->iso_qos = *qos; |
2061 | conn->state = BT_BOUND; | |
eca0ae4a LAD |
2062 | } |
2063 | ||
2064 | static int create_big_sync(struct hci_dev *hdev, void *data) | |
2065 | { | |
2066 | struct hci_conn *conn = data; | |
2067 | struct bt_iso_qos *qos = &conn->iso_qos; | |
2068 | u16 interval, sync_interval = 0; | |
2069 | u32 flags = 0; | |
2070 | int err; | |
2071 | ||
0fe8c8d0 | 2072 | if (qos->bcast.out.phy == 0x02) |
eca0ae4a LAD |
2073 | flags |= MGMT_ADV_FLAG_SEC_2M; |
2074 | ||
2075 | /* Align intervals */ | |
14f0dcec | 2076 | interval = (qos->bcast.out.interval / 1250) * qos->bcast.sync_factor; |
eca0ae4a | 2077 | |
0fe8c8d0 | 2078 | if (qos->bcast.bis) |
14f0dcec | 2079 | sync_interval = interval * 4; |
eca0ae4a | 2080 | |
0fe8c8d0 | 2081 | err = hci_start_per_adv_sync(hdev, qos->bcast.bis, conn->le_per_adv_data_len, |
eca0ae4a LAD |
2082 | conn->le_per_adv_data, flags, interval, |
2083 | interval, sync_interval); | |
2084 | if (err) | |
2085 | return err; | |
2086 | ||
2087 | return hci_le_create_big(conn, &conn->iso_qos); | |
2088 | } | |
2089 | ||
2090 | static void create_pa_complete(struct hci_dev *hdev, void *data, int err) | |
2091 | { | |
2092 | struct hci_cp_le_pa_create_sync *cp = data; | |
2093 | ||
2094 | bt_dev_dbg(hdev, ""); | |
2095 | ||
2096 | if (err) | |
2097 | bt_dev_err(hdev, "Unable to create PA: %d", err); | |
2098 | ||
2099 | kfree(cp); | |
2100 | } | |
2101 | ||
2102 | static int create_pa_sync(struct hci_dev *hdev, void *data) | |
2103 | { | |
2104 | struct hci_cp_le_pa_create_sync *cp = data; | |
2105 | int err; | |
2106 | ||
2107 | err = __hci_cmd_sync_status(hdev, HCI_OP_LE_PA_CREATE_SYNC, | |
2108 | sizeof(*cp), cp, HCI_CMD_TIMEOUT); | |
2109 | if (err) { | |
2110 | hci_dev_clear_flag(hdev, HCI_PA_SYNC); | |
2111 | return err; | |
2112 | } | |
2113 | ||
2114 | return hci_update_passive_scan_sync(hdev); | |
2115 | } | |
2116 | ||
2117 | int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type, | |
0fe8c8d0 | 2118 | __u8 sid, struct bt_iso_qos *qos) |
eca0ae4a LAD |
2119 | { |
2120 | struct hci_cp_le_pa_create_sync *cp; | |
2121 | ||
2122 | if (hci_dev_test_and_set_flag(hdev, HCI_PA_SYNC)) | |
2123 | return -EBUSY; | |
2124 | ||
37224a29 | 2125 | cp = kzalloc(sizeof(*cp), GFP_KERNEL); |
eca0ae4a LAD |
2126 | if (!cp) { |
2127 | hci_dev_clear_flag(hdev, HCI_PA_SYNC); | |
2128 | return -ENOMEM; | |
2129 | } | |
2130 | ||
0fe8c8d0 | 2131 | cp->options = qos->bcast.options; |
eca0ae4a LAD |
2132 | cp->sid = sid; |
2133 | cp->addr_type = dst_type; | |
2134 | bacpy(&cp->addr, dst); | |
0fe8c8d0 IT |
2135 | cp->skip = cpu_to_le16(qos->bcast.skip); |
2136 | cp->sync_timeout = cpu_to_le16(qos->bcast.sync_timeout); | |
2137 | cp->sync_cte_type = qos->bcast.sync_cte_type; | |
eca0ae4a LAD |
2138 | |
2139 | /* Queue start pa_create_sync and scan */ | |
2140 | return hci_cmd_sync_queue(hdev, create_pa_sync, cp, create_pa_complete); | |
2141 | } | |
2142 | ||
2143 | int hci_le_big_create_sync(struct hci_dev *hdev, struct bt_iso_qos *qos, | |
2144 | __u16 sync_handle, __u8 num_bis, __u8 bis[]) | |
2145 | { | |
2146 | struct _packed { | |
2147 | struct hci_cp_le_big_create_sync cp; | |
2148 | __u8 bis[0x11]; | |
2149 | } pdu; | |
2150 | int err; | |
2151 | ||
2152 | if (num_bis > sizeof(pdu.bis)) | |
2153 | return -EINVAL; | |
2154 | ||
2155 | err = qos_set_big(hdev, qos); | |
2156 | if (err) | |
2157 | return err; | |
2158 | ||
2159 | memset(&pdu, 0, sizeof(pdu)); | |
0fe8c8d0 | 2160 | pdu.cp.handle = qos->bcast.big; |
eca0ae4a | 2161 | pdu.cp.sync_handle = cpu_to_le16(sync_handle); |
0fe8c8d0 IT |
2162 | pdu.cp.encryption = qos->bcast.encryption; |
2163 | memcpy(pdu.cp.bcode, qos->bcast.bcode, sizeof(pdu.cp.bcode)); | |
2164 | pdu.cp.mse = qos->bcast.mse; | |
2165 | pdu.cp.timeout = cpu_to_le16(qos->bcast.timeout); | |
eca0ae4a LAD |
2166 | pdu.cp.num_bis = num_bis; |
2167 | memcpy(pdu.bis, bis, num_bis); | |
2168 | ||
2169 | return hci_send_cmd(hdev, HCI_OP_LE_BIG_CREATE_SYNC, | |
2170 | sizeof(pdu.cp) + num_bis, &pdu); | |
2171 | } | |
2172 | ||
2173 | static void create_big_complete(struct hci_dev *hdev, void *data, int err) | |
2174 | { | |
2175 | struct hci_conn *conn = data; | |
2176 | ||
2177 | bt_dev_dbg(hdev, "conn %p", conn); | |
2178 | ||
2179 | if (err) { | |
2180 | bt_dev_err(hdev, "Unable to create BIG: %d", err); | |
2181 | hci_connect_cfm(conn, err); | |
2182 | hci_conn_del(conn); | |
2183 | } | |
2184 | } | |
2185 | ||
2186 | struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst, | |
2187 | __u8 dst_type, struct bt_iso_qos *qos, | |
2188 | __u8 base_len, __u8 *base) | |
2189 | { | |
2190 | struct hci_conn *conn; | |
2191 | int err; | |
2192 | ||
2193 | /* We need hci_conn object using the BDADDR_ANY as dst */ | |
2194 | conn = hci_add_bis(hdev, dst, qos); | |
2195 | if (IS_ERR(conn)) | |
2196 | return conn; | |
2197 | ||
a00a29b0 | 2198 | hci_bind_bis(conn, qos); |
eca0ae4a LAD |
2199 | |
2200 | /* Add Basic Announcement into Peridic Adv Data if BASE is set */ | |
2201 | if (base_len && base) { | |
2202 | base_len = eir_append_service_data(conn->le_per_adv_data, 0, | |
2203 | 0x1851, base, base_len); | |
2204 | conn->le_per_adv_data_len = base_len; | |
2205 | } | |
2206 | ||
2207 | /* Queue start periodic advertising and create BIG */ | |
2208 | err = hci_cmd_sync_queue(hdev, create_big_sync, conn, | |
2209 | create_big_complete); | |
2210 | if (err < 0) { | |
2211 | hci_conn_drop(conn); | |
2212 | return ERR_PTR(err); | |
2213 | } | |
2214 | ||
0fe8c8d0 | 2215 | hci_iso_qos_setup(hdev, conn, &qos->bcast.out, |
eca0ae4a LAD |
2216 | conn->le_tx_phy ? conn->le_tx_phy : |
2217 | hdev->le_tx_def_phys); | |
2218 | ||
2219 | return conn; | |
2220 | } | |
2221 | ||
26afbd82 LAD |
2222 | struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst, |
2223 | __u8 dst_type, struct bt_iso_qos *qos) | |
2224 | { | |
2225 | struct hci_conn *le; | |
2226 | struct hci_conn *cis; | |
06149746 | 2227 | struct hci_link *link; |
26afbd82 | 2228 | |
26afbd82 LAD |
2229 | if (hci_dev_test_flag(hdev, HCI_ADVERTISING)) |
2230 | le = hci_connect_le(hdev, dst, dst_type, false, | |
2231 | BT_SECURITY_LOW, | |
2232 | HCI_LE_CONN_TIMEOUT, | |
2233 | HCI_ROLE_SLAVE); | |
2234 | else | |
2235 | le = hci_connect_le_scan(hdev, dst, dst_type, | |
2236 | BT_SECURITY_LOW, | |
2237 | HCI_LE_CONN_TIMEOUT, | |
2238 | CONN_REASON_ISO_CONNECT); | |
2239 | if (IS_ERR(le)) | |
2240 | return le; | |
2241 | ||
0fe8c8d0 | 2242 | hci_iso_qos_setup(hdev, le, &qos->ucast.out, |
26afbd82 | 2243 | le->le_tx_phy ? le->le_tx_phy : hdev->le_tx_def_phys); |
0fe8c8d0 | 2244 | hci_iso_qos_setup(hdev, le, &qos->ucast.in, |
26afbd82 LAD |
2245 | le->le_rx_phy ? le->le_rx_phy : hdev->le_rx_def_phys); |
2246 | ||
2247 | cis = hci_bind_cis(hdev, dst, dst_type, qos); | |
2248 | if (IS_ERR(cis)) { | |
2249 | hci_conn_drop(le); | |
2250 | return cis; | |
2251 | } | |
2252 | ||
06149746 LAD |
2253 | link = hci_conn_link(le, cis); |
2254 | if (!link) { | |
2255 | hci_conn_drop(le); | |
2256 | hci_conn_drop(cis); | |
2257 | return NULL; | |
2258 | } | |
26afbd82 LAD |
2259 | |
2260 | /* If LE is already connected and CIS handle is already set proceed to | |
2261 | * Create CIS immediately. | |
2262 | */ | |
2263 | if (le->state == BT_CONNECTED && cis->handle != HCI_CONN_HANDLE_UNSET) | |
06149746 | 2264 | hci_le_create_cis(cis); |
26afbd82 LAD |
2265 | |
2266 | return cis; | |
2267 | } | |
2268 | ||
e7c29cb1 MH |
2269 | /* Check link security requirement */ |
2270 | int hci_conn_check_link_mode(struct hci_conn *conn) | |
2271 | { | |
38b3fef1 | 2272 | BT_DBG("hcon %p", conn); |
e7c29cb1 | 2273 | |
40b552aa MH |
2274 | /* In Secure Connections Only mode, it is required that Secure |
2275 | * Connections is used and the link is encrypted with AES-CCM | |
2276 | * using a P-256 authenticated combination key. | |
2277 | */ | |
d7a5a11d | 2278 | if (hci_dev_test_flag(conn->hdev, HCI_SC_ONLY)) { |
40b552aa MH |
2279 | if (!hci_conn_sc_enabled(conn) || |
2280 | !test_bit(HCI_CONN_AES_CCM, &conn->flags) || | |
2281 | conn->key_type != HCI_LK_AUTH_COMBINATION_P256) | |
2282 | return 0; | |
2283 | } | |
2284 | ||
8746f135 LAD |
2285 | /* AES encryption is required for Level 4: |
2286 | * | |
2287 | * BLUETOOTH CORE SPECIFICATION Version 5.2 | Vol 3, Part C | |
2288 | * page 1319: | |
2289 | * | |
2290 | * 128-bit equivalent strength for link and encryption keys | |
2291 | * required using FIPS approved algorithms (E0 not allowed, | |
2292 | * SAFER+ not allowed, and P-192 not allowed; encryption key | |
2293 | * not shortened) | |
2294 | */ | |
2295 | if (conn->sec_level == BT_SECURITY_FIPS && | |
2296 | !test_bit(HCI_CONN_AES_CCM, &conn->flags)) { | |
2297 | bt_dev_err(conn->hdev, | |
2298 | "Invalid security: Missing AES-CCM usage"); | |
2299 | return 0; | |
2300 | } | |
2301 | ||
4dae2798 JH |
2302 | if (hci_conn_ssp_enabled(conn) && |
2303 | !test_bit(HCI_CONN_ENCRYPT, &conn->flags)) | |
e7c29cb1 MH |
2304 | return 0; |
2305 | ||
2306 | return 1; | |
2307 | } | |
e7c29cb1 | 2308 | |
1da177e4 | 2309 | /* Authenticate remote device */ |
0684e5f9 | 2310 | static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type) |
1da177e4 | 2311 | { |
38b3fef1 | 2312 | BT_DBG("hcon %p", conn); |
1da177e4 | 2313 | |
765c2a96 JH |
2314 | if (conn->pending_sec_level > sec_level) |
2315 | sec_level = conn->pending_sec_level; | |
2316 | ||
96a31833 | 2317 | if (sec_level > conn->sec_level) |
765c2a96 | 2318 | conn->pending_sec_level = sec_level; |
4dae2798 | 2319 | else if (test_bit(HCI_CONN_AUTH, &conn->flags)) |
1da177e4 LT |
2320 | return 1; |
2321 | ||
65cf686e JH |
2322 | /* Make sure we preserve an existing MITM requirement*/ |
2323 | auth_type |= (conn->auth_type & 0x01); | |
2324 | ||
96a31833 MH |
2325 | conn->auth_type = auth_type; |
2326 | ||
51a8efd7 | 2327 | if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { |
1da177e4 | 2328 | struct hci_cp_auth_requested cp; |
b7d05bad | 2329 | |
aca3192c | 2330 | cp.handle = cpu_to_le16(conn->handle); |
40be492f | 2331 | hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED, |
5974e4c4 | 2332 | sizeof(cp), &cp); |
09da1f34 JH |
2333 | |
2334 | /* If we're already encrypted set the REAUTH_PEND flag, | |
2335 | * otherwise set the ENCRYPT_PEND. | |
2336 | */ | |
4dae2798 | 2337 | if (test_bit(HCI_CONN_ENCRYPT, &conn->flags)) |
51a8efd7 | 2338 | set_bit(HCI_CONN_REAUTH_PEND, &conn->flags); |
09da1f34 JH |
2339 | else |
2340 | set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); | |
1da177e4 | 2341 | } |
8c1b2355 | 2342 | |
1da177e4 LT |
2343 | return 0; |
2344 | } | |
1da177e4 | 2345 | |
bb6d6895 | 2346 | /* Encrypt the link */ |
13d39315 WR |
2347 | static void hci_conn_encrypt(struct hci_conn *conn) |
2348 | { | |
38b3fef1 | 2349 | BT_DBG("hcon %p", conn); |
13d39315 | 2350 | |
51a8efd7 | 2351 | if (!test_and_set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { |
13d39315 WR |
2352 | struct hci_cp_set_conn_encrypt cp; |
2353 | cp.handle = cpu_to_le16(conn->handle); | |
2354 | cp.encrypt = 0x01; | |
2355 | hci_send_cmd(conn->hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), | |
5974e4c4 | 2356 | &cp); |
13d39315 WR |
2357 | } |
2358 | } | |
2359 | ||
8c1b2355 | 2360 | /* Enable security */ |
e7cafc45 JH |
2361 | int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, |
2362 | bool initiator) | |
1da177e4 | 2363 | { |
38b3fef1 | 2364 | BT_DBG("hcon %p", conn); |
1da177e4 | 2365 | |
d8343f12 VCG |
2366 | if (conn->type == LE_LINK) |
2367 | return smp_conn_security(conn, sec_level); | |
2368 | ||
13d39315 | 2369 | /* For sdp we don't need the link key. */ |
8c1b2355 MH |
2370 | if (sec_level == BT_SECURITY_SDP) |
2371 | return 1; | |
2372 | ||
13d39315 WR |
2373 | /* For non 2.1 devices and low security level we don't need the link |
2374 | key. */ | |
aa64a8b5 | 2375 | if (sec_level == BT_SECURITY_LOW && !hci_conn_ssp_enabled(conn)) |
3fdca1e1 | 2376 | return 1; |
8c1b2355 | 2377 | |
13d39315 | 2378 | /* For other security levels we need the link key. */ |
4dae2798 | 2379 | if (!test_bit(HCI_CONN_AUTH, &conn->flags)) |
13d39315 WR |
2380 | goto auth; |
2381 | ||
7b5a9241 MH |
2382 | /* An authenticated FIPS approved combination key has sufficient |
2383 | * security for security level 4. */ | |
2384 | if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256 && | |
2385 | sec_level == BT_SECURITY_FIPS) | |
2386 | goto encrypt; | |
2387 | ||
2388 | /* An authenticated combination key has sufficient security for | |
2389 | security level 3. */ | |
2390 | if ((conn->key_type == HCI_LK_AUTH_COMBINATION_P192 || | |
2391 | conn->key_type == HCI_LK_AUTH_COMBINATION_P256) && | |
2392 | sec_level == BT_SECURITY_HIGH) | |
13d39315 WR |
2393 | goto encrypt; |
2394 | ||
2395 | /* An unauthenticated combination key has sufficient security for | |
2396 | security level 1 and 2. */ | |
66138ce8 MH |
2397 | if ((conn->key_type == HCI_LK_UNAUTH_COMBINATION_P192 || |
2398 | conn->key_type == HCI_LK_UNAUTH_COMBINATION_P256) && | |
5974e4c4 | 2399 | (sec_level == BT_SECURITY_MEDIUM || sec_level == BT_SECURITY_LOW)) |
13d39315 WR |
2400 | goto encrypt; |
2401 | ||
2402 | /* A combination key has always sufficient security for the security | |
2403 | levels 1 or 2. High security level requires the combination key | |
2404 | is generated using maximum PIN code length (16). | |
2405 | For pre 2.1 units. */ | |
2406 | if (conn->key_type == HCI_LK_COMBINATION && | |
7b5a9241 MH |
2407 | (sec_level == BT_SECURITY_MEDIUM || sec_level == BT_SECURITY_LOW || |
2408 | conn->pin_length == 16)) | |
13d39315 WR |
2409 | goto encrypt; |
2410 | ||
2411 | auth: | |
51a8efd7 | 2412 | if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) |
1da177e4 LT |
2413 | return 0; |
2414 | ||
977f8fce JH |
2415 | if (initiator) |
2416 | set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); | |
2417 | ||
6fdf658c LAD |
2418 | if (!hci_conn_auth(conn, sec_level, auth_type)) |
2419 | return 0; | |
13d39315 WR |
2420 | |
2421 | encrypt: | |
693cd8ce MH |
2422 | if (test_bit(HCI_CONN_ENCRYPT, &conn->flags)) { |
2423 | /* Ensure that the encryption key size has been read, | |
2424 | * otherwise stall the upper layer responses. | |
2425 | */ | |
2426 | if (!conn->enc_key_size) | |
2427 | return 0; | |
2428 | ||
2429 | /* Nothing else needed, all requirements are met */ | |
13d39315 | 2430 | return 1; |
693cd8ce | 2431 | } |
8c1b2355 | 2432 | |
13d39315 | 2433 | hci_conn_encrypt(conn); |
1da177e4 LT |
2434 | return 0; |
2435 | } | |
8c1b2355 | 2436 | EXPORT_SYMBOL(hci_conn_security); |
1da177e4 | 2437 | |
b3b1b061 WR |
2438 | /* Check secure link requirement */ |
2439 | int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level) | |
2440 | { | |
38b3fef1 | 2441 | BT_DBG("hcon %p", conn); |
b3b1b061 | 2442 | |
9cb2e030 MH |
2443 | /* Accept if non-secure or higher security level is required */ |
2444 | if (sec_level != BT_SECURITY_HIGH && sec_level != BT_SECURITY_FIPS) | |
2445 | return 1; | |
b3b1b061 | 2446 | |
9cb2e030 MH |
2447 | /* Accept if secure or higher security level is already present */ |
2448 | if (conn->sec_level == BT_SECURITY_HIGH || | |
2449 | conn->sec_level == BT_SECURITY_FIPS) | |
b3b1b061 WR |
2450 | return 1; |
2451 | ||
9cb2e030 MH |
2452 | /* Reject not secure link */ |
2453 | return 0; | |
b3b1b061 WR |
2454 | } |
2455 | EXPORT_SYMBOL(hci_conn_check_secure); | |
2456 | ||
1da177e4 | 2457 | /* Switch role */ |
8c1b2355 | 2458 | int hci_conn_switch_role(struct hci_conn *conn, __u8 role) |
1da177e4 | 2459 | { |
38b3fef1 | 2460 | BT_DBG("hcon %p", conn); |
1da177e4 | 2461 | |
40bef302 | 2462 | if (role == conn->role) |
1da177e4 LT |
2463 | return 1; |
2464 | ||
51a8efd7 | 2465 | if (!test_and_set_bit(HCI_CONN_RSWITCH_PEND, &conn->flags)) { |
1da177e4 LT |
2466 | struct hci_cp_switch_role cp; |
2467 | bacpy(&cp.bdaddr, &conn->dst); | |
2468 | cp.role = role; | |
a9de9248 | 2469 | hci_send_cmd(conn->hdev, HCI_OP_SWITCH_ROLE, sizeof(cp), &cp); |
1da177e4 | 2470 | } |
8c1b2355 | 2471 | |
1da177e4 LT |
2472 | return 0; |
2473 | } | |
2474 | EXPORT_SYMBOL(hci_conn_switch_role); | |
2475 | ||
04837f64 | 2476 | /* Enter active mode */ |
14b12d0b | 2477 | void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active) |
04837f64 MH |
2478 | { |
2479 | struct hci_dev *hdev = conn->hdev; | |
2480 | ||
38b3fef1 | 2481 | BT_DBG("hcon %p mode %d", conn, conn->mode); |
04837f64 | 2482 | |
14b12d0b JG |
2483 | if (conn->mode != HCI_CM_SNIFF) |
2484 | goto timer; | |
2485 | ||
58a681ef | 2486 | if (!test_bit(HCI_CONN_POWER_SAVE, &conn->flags) && !force_active) |
04837f64 MH |
2487 | goto timer; |
2488 | ||
51a8efd7 | 2489 | if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags)) { |
04837f64 | 2490 | struct hci_cp_exit_sniff_mode cp; |
aca3192c | 2491 | cp.handle = cpu_to_le16(conn->handle); |
a9de9248 | 2492 | hci_send_cmd(hdev, HCI_OP_EXIT_SNIFF_MODE, sizeof(cp), &cp); |
04837f64 MH |
2493 | } |
2494 | ||
2495 | timer: | |
2496 | if (hdev->idle_timeout > 0) | |
a74a84f6 JH |
2497 | queue_delayed_work(hdev->workqueue, &conn->idle_work, |
2498 | msecs_to_jiffies(hdev->idle_timeout)); | |
04837f64 MH |
2499 | } |
2500 | ||
1da177e4 LT |
2501 | /* Drop all connection on the device */ |
2502 | void hci_conn_hash_flush(struct hci_dev *hdev) | |
2503 | { | |
a2ac591c RL |
2504 | struct list_head *head = &hdev->conn_hash.list; |
2505 | struct hci_conn *conn; | |
1da177e4 LT |
2506 | |
2507 | BT_DBG("hdev %s", hdev->name); | |
2508 | ||
a2ac591c RL |
2509 | /* We should not traverse the list here, because hci_conn_del |
2510 | * can remove extra links, which may cause the list traversal | |
2511 | * to hit items that have already been released. | |
2512 | */ | |
2513 | while ((conn = list_first_entry_or_null(head, | |
2514 | struct hci_conn, | |
2515 | list)) != NULL) { | |
2516 | conn->state = BT_CLOSED; | |
2517 | hci_disconn_cfm(conn, HCI_ERROR_LOCAL_HOST_TERM); | |
a2ac591c | 2518 | hci_conn_del(conn); |
1da177e4 LT |
2519 | } |
2520 | } | |
2521 | ||
a9de9248 MH |
2522 | /* Check pending connect attempts */ |
2523 | void hci_conn_check_pending(struct hci_dev *hdev) | |
2524 | { | |
2525 | struct hci_conn *conn; | |
2526 | ||
2527 | BT_DBG("hdev %s", hdev->name); | |
2528 | ||
2529 | hci_dev_lock(hdev); | |
2530 | ||
2531 | conn = hci_conn_hash_lookup_state(hdev, ACL_LINK, BT_CONNECT2); | |
2532 | if (conn) | |
1aef8669 | 2533 | hci_acl_create_connection(conn); |
a9de9248 MH |
2534 | |
2535 | hci_dev_unlock(hdev); | |
2536 | } | |
2537 | ||
4dae2798 JH |
2538 | static u32 get_link_mode(struct hci_conn *conn) |
2539 | { | |
2540 | u32 link_mode = 0; | |
2541 | ||
40bef302 | 2542 | if (conn->role == HCI_ROLE_MASTER) |
4dae2798 JH |
2543 | link_mode |= HCI_LM_MASTER; |
2544 | ||
2545 | if (test_bit(HCI_CONN_ENCRYPT, &conn->flags)) | |
2546 | link_mode |= HCI_LM_ENCRYPT; | |
2547 | ||
2548 | if (test_bit(HCI_CONN_AUTH, &conn->flags)) | |
2549 | link_mode |= HCI_LM_AUTH; | |
2550 | ||
2551 | if (test_bit(HCI_CONN_SECURE, &conn->flags)) | |
2552 | link_mode |= HCI_LM_SECURE; | |
2553 | ||
2554 | if (test_bit(HCI_CONN_FIPS, &conn->flags)) | |
2555 | link_mode |= HCI_LM_FIPS; | |
2556 | ||
2557 | return link_mode; | |
2558 | } | |
2559 | ||
1da177e4 LT |
2560 | int hci_get_conn_list(void __user *arg) |
2561 | { | |
fc5fef61 | 2562 | struct hci_conn *c; |
1da177e4 LT |
2563 | struct hci_conn_list_req req, *cl; |
2564 | struct hci_conn_info *ci; | |
2565 | struct hci_dev *hdev; | |
1da177e4 LT |
2566 | int n = 0, size, err; |
2567 | ||
2568 | if (copy_from_user(&req, arg, sizeof(req))) | |
2569 | return -EFAULT; | |
2570 | ||
2571 | if (!req.conn_num || req.conn_num > (PAGE_SIZE * 2) / sizeof(*ci)) | |
2572 | return -EINVAL; | |
2573 | ||
2574 | size = sizeof(req) + req.conn_num * sizeof(*ci); | |
2575 | ||
70f23020 AE |
2576 | cl = kmalloc(size, GFP_KERNEL); |
2577 | if (!cl) | |
1da177e4 LT |
2578 | return -ENOMEM; |
2579 | ||
70f23020 AE |
2580 | hdev = hci_dev_get(req.dev_id); |
2581 | if (!hdev) { | |
1da177e4 LT |
2582 | kfree(cl); |
2583 | return -ENODEV; | |
2584 | } | |
2585 | ||
2586 | ci = cl->conn_info; | |
2587 | ||
09fd0de5 | 2588 | hci_dev_lock(hdev); |
8035ded4 | 2589 | list_for_each_entry(c, &hdev->conn_hash.list, list) { |
1da177e4 LT |
2590 | bacpy(&(ci + n)->bdaddr, &c->dst); |
2591 | (ci + n)->handle = c->handle; | |
2592 | (ci + n)->type = c->type; | |
2593 | (ci + n)->out = c->out; | |
2594 | (ci + n)->state = c->state; | |
4dae2798 | 2595 | (ci + n)->link_mode = get_link_mode(c); |
1da177e4 LT |
2596 | if (++n >= req.conn_num) |
2597 | break; | |
2598 | } | |
09fd0de5 | 2599 | hci_dev_unlock(hdev); |
1da177e4 LT |
2600 | |
2601 | cl->dev_id = hdev->id; | |
2602 | cl->conn_num = n; | |
2603 | size = sizeof(req) + n * sizeof(*ci); | |
2604 | ||
2605 | hci_dev_put(hdev); | |
2606 | ||
2607 | err = copy_to_user(arg, cl, size); | |
2608 | kfree(cl); | |
2609 | ||
2610 | return err ? -EFAULT : 0; | |
2611 | } | |
2612 | ||
2613 | int hci_get_conn_info(struct hci_dev *hdev, void __user *arg) | |
2614 | { | |
2615 | struct hci_conn_info_req req; | |
2616 | struct hci_conn_info ci; | |
2617 | struct hci_conn *conn; | |
2618 | char __user *ptr = arg + sizeof(req); | |
2619 | ||
2620 | if (copy_from_user(&req, arg, sizeof(req))) | |
2621 | return -EFAULT; | |
2622 | ||
09fd0de5 | 2623 | hci_dev_lock(hdev); |
1da177e4 LT |
2624 | conn = hci_conn_hash_lookup_ba(hdev, req.type, &req.bdaddr); |
2625 | if (conn) { | |
2626 | bacpy(&ci.bdaddr, &conn->dst); | |
2627 | ci.handle = conn->handle; | |
2628 | ci.type = conn->type; | |
2629 | ci.out = conn->out; | |
2630 | ci.state = conn->state; | |
4dae2798 | 2631 | ci.link_mode = get_link_mode(conn); |
1da177e4 | 2632 | } |
09fd0de5 | 2633 | hci_dev_unlock(hdev); |
1da177e4 LT |
2634 | |
2635 | if (!conn) | |
2636 | return -ENOENT; | |
2637 | ||
2638 | return copy_to_user(ptr, &ci, sizeof(ci)) ? -EFAULT : 0; | |
2639 | } | |
40be492f MH |
2640 | |
2641 | int hci_get_auth_info(struct hci_dev *hdev, void __user *arg) | |
2642 | { | |
2643 | struct hci_auth_info_req req; | |
2644 | struct hci_conn *conn; | |
2645 | ||
2646 | if (copy_from_user(&req, arg, sizeof(req))) | |
2647 | return -EFAULT; | |
2648 | ||
09fd0de5 | 2649 | hci_dev_lock(hdev); |
40be492f MH |
2650 | conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &req.bdaddr); |
2651 | if (conn) | |
2652 | req.type = conn->auth_type; | |
09fd0de5 | 2653 | hci_dev_unlock(hdev); |
40be492f MH |
2654 | |
2655 | if (!conn) | |
2656 | return -ENOENT; | |
2657 | ||
2658 | return copy_to_user(arg, &req, sizeof(req)) ? -EFAULT : 0; | |
2659 | } | |
73d80deb LAD |
2660 | |
2661 | struct hci_chan *hci_chan_create(struct hci_conn *conn) | |
2662 | { | |
2663 | struct hci_dev *hdev = conn->hdev; | |
2664 | struct hci_chan *chan; | |
2665 | ||
38b3fef1 | 2666 | BT_DBG("%s hcon %p", hdev->name, conn); |
73d80deb | 2667 | |
f94b665d JH |
2668 | if (test_bit(HCI_CONN_DROP, &conn->flags)) { |
2669 | BT_DBG("Refusing to create new hci_chan"); | |
2670 | return NULL; | |
2671 | } | |
2672 | ||
27f70f3e | 2673 | chan = kzalloc(sizeof(*chan), GFP_KERNEL); |
73d80deb LAD |
2674 | if (!chan) |
2675 | return NULL; | |
2676 | ||
6c388d32 | 2677 | chan->conn = hci_conn_get(conn); |
73d80deb | 2678 | skb_queue_head_init(&chan->data_q); |
168df8e5 | 2679 | chan->state = BT_CONNECTED; |
73d80deb | 2680 | |
8192edef | 2681 | list_add_rcu(&chan->list, &conn->chan_list); |
73d80deb LAD |
2682 | |
2683 | return chan; | |
2684 | } | |
2685 | ||
9472007c | 2686 | void hci_chan_del(struct hci_chan *chan) |
73d80deb LAD |
2687 | { |
2688 | struct hci_conn *conn = chan->conn; | |
2689 | struct hci_dev *hdev = conn->hdev; | |
2690 | ||
38b3fef1 | 2691 | BT_DBG("%s hcon %p chan %p", hdev->name, conn, chan); |
73d80deb | 2692 | |
8192edef GP |
2693 | list_del_rcu(&chan->list); |
2694 | ||
2695 | synchronize_rcu(); | |
73d80deb | 2696 | |
bcbb655a | 2697 | /* Prevent new hci_chan's to be created for this hci_conn */ |
f94b665d | 2698 | set_bit(HCI_CONN_DROP, &conn->flags); |
b3ff670a | 2699 | |
6c388d32 | 2700 | hci_conn_put(conn); |
e9b02748 | 2701 | |
73d80deb LAD |
2702 | skb_queue_purge(&chan->data_q); |
2703 | kfree(chan); | |
73d80deb LAD |
2704 | } |
2705 | ||
2c33c06a | 2706 | void hci_chan_list_flush(struct hci_conn *conn) |
73d80deb | 2707 | { |
2a5a5ec6 | 2708 | struct hci_chan *chan, *n; |
73d80deb | 2709 | |
38b3fef1 | 2710 | BT_DBG("hcon %p", conn); |
73d80deb | 2711 | |
2a5a5ec6 | 2712 | list_for_each_entry_safe(chan, n, &conn->chan_list, list) |
73d80deb LAD |
2713 | hci_chan_del(chan); |
2714 | } | |
42c4e53e AE |
2715 | |
2716 | static struct hci_chan *__hci_chan_lookup_handle(struct hci_conn *hcon, | |
2717 | __u16 handle) | |
2718 | { | |
2719 | struct hci_chan *hchan; | |
2720 | ||
2721 | list_for_each_entry(hchan, &hcon->chan_list, list) { | |
2722 | if (hchan->handle == handle) | |
2723 | return hchan; | |
2724 | } | |
2725 | ||
2726 | return NULL; | |
2727 | } | |
2728 | ||
2729 | struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle) | |
2730 | { | |
2731 | struct hci_conn_hash *h = &hdev->conn_hash; | |
2732 | struct hci_conn *hcon; | |
2733 | struct hci_chan *hchan = NULL; | |
2734 | ||
2735 | rcu_read_lock(); | |
2736 | ||
2737 | list_for_each_entry_rcu(hcon, &h->list, list) { | |
2738 | hchan = __hci_chan_lookup_handle(hcon, handle); | |
2739 | if (hchan) | |
2740 | break; | |
2741 | } | |
2742 | ||
2743 | rcu_read_unlock(); | |
2744 | ||
2745 | return hchan; | |
2746 | } | |
eab2404b LAD |
2747 | |
2748 | u32 hci_conn_get_phy(struct hci_conn *conn) | |
2749 | { | |
2750 | u32 phys = 0; | |
2751 | ||
eab2404b LAD |
2752 | /* BLUETOOTH CORE SPECIFICATION Version 5.2 | Vol 2, Part B page 471: |
2753 | * Table 6.2: Packets defined for synchronous, asynchronous, and | |
6397729b | 2754 | * CPB logical transport types. |
eab2404b LAD |
2755 | */ |
2756 | switch (conn->type) { | |
2757 | case SCO_LINK: | |
2758 | /* SCO logical transport (1 Mb/s): | |
2759 | * HV1, HV2, HV3 and DV. | |
2760 | */ | |
2761 | phys |= BT_PHY_BR_1M_1SLOT; | |
2762 | ||
2763 | break; | |
2764 | ||
2765 | case ACL_LINK: | |
2766 | /* ACL logical transport (1 Mb/s) ptt=0: | |
2767 | * DH1, DM3, DH3, DM5 and DH5. | |
2768 | */ | |
2769 | phys |= BT_PHY_BR_1M_1SLOT; | |
2770 | ||
2771 | if (conn->pkt_type & (HCI_DM3 | HCI_DH3)) | |
2772 | phys |= BT_PHY_BR_1M_3SLOT; | |
2773 | ||
2774 | if (conn->pkt_type & (HCI_DM5 | HCI_DH5)) | |
2775 | phys |= BT_PHY_BR_1M_5SLOT; | |
2776 | ||
2777 | /* ACL logical transport (2 Mb/s) ptt=1: | |
2778 | * 2-DH1, 2-DH3 and 2-DH5. | |
2779 | */ | |
2780 | if (!(conn->pkt_type & HCI_2DH1)) | |
2781 | phys |= BT_PHY_EDR_2M_1SLOT; | |
2782 | ||
2783 | if (!(conn->pkt_type & HCI_2DH3)) | |
2784 | phys |= BT_PHY_EDR_2M_3SLOT; | |
2785 | ||
2786 | if (!(conn->pkt_type & HCI_2DH5)) | |
2787 | phys |= BT_PHY_EDR_2M_5SLOT; | |
2788 | ||
2789 | /* ACL logical transport (3 Mb/s) ptt=1: | |
2790 | * 3-DH1, 3-DH3 and 3-DH5. | |
2791 | */ | |
2792 | if (!(conn->pkt_type & HCI_3DH1)) | |
2793 | phys |= BT_PHY_EDR_3M_1SLOT; | |
2794 | ||
2795 | if (!(conn->pkt_type & HCI_3DH3)) | |
2796 | phys |= BT_PHY_EDR_3M_3SLOT; | |
2797 | ||
2798 | if (!(conn->pkt_type & HCI_3DH5)) | |
2799 | phys |= BT_PHY_EDR_3M_5SLOT; | |
2800 | ||
2801 | break; | |
2802 | ||
2803 | case ESCO_LINK: | |
2804 | /* eSCO logical transport (1 Mb/s): EV3, EV4 and EV5 */ | |
2805 | phys |= BT_PHY_BR_1M_1SLOT; | |
2806 | ||
2807 | if (!(conn->pkt_type & (ESCO_EV4 | ESCO_EV5))) | |
2808 | phys |= BT_PHY_BR_1M_3SLOT; | |
2809 | ||
2810 | /* eSCO logical transport (2 Mb/s): 2-EV3, 2-EV5 */ | |
2811 | if (!(conn->pkt_type & ESCO_2EV3)) | |
2812 | phys |= BT_PHY_EDR_2M_1SLOT; | |
2813 | ||
2814 | if (!(conn->pkt_type & ESCO_2EV5)) | |
2815 | phys |= BT_PHY_EDR_2M_3SLOT; | |
2816 | ||
2817 | /* eSCO logical transport (3 Mb/s): 3-EV3, 3-EV5 */ | |
2818 | if (!(conn->pkt_type & ESCO_3EV3)) | |
2819 | phys |= BT_PHY_EDR_3M_1SLOT; | |
2820 | ||
2821 | if (!(conn->pkt_type & ESCO_3EV5)) | |
2822 | phys |= BT_PHY_EDR_3M_3SLOT; | |
2823 | ||
2824 | break; | |
2825 | ||
2826 | case LE_LINK: | |
2827 | if (conn->le_tx_phy & HCI_LE_SET_PHY_1M) | |
2828 | phys |= BT_PHY_LE_1M_TX; | |
2829 | ||
2830 | if (conn->le_rx_phy & HCI_LE_SET_PHY_1M) | |
2831 | phys |= BT_PHY_LE_1M_RX; | |
2832 | ||
2833 | if (conn->le_tx_phy & HCI_LE_SET_PHY_2M) | |
2834 | phys |= BT_PHY_LE_2M_TX; | |
2835 | ||
2836 | if (conn->le_rx_phy & HCI_LE_SET_PHY_2M) | |
2837 | phys |= BT_PHY_LE_2M_RX; | |
2838 | ||
2839 | if (conn->le_tx_phy & HCI_LE_SET_PHY_CODED) | |
2840 | phys |= BT_PHY_LE_CODED_TX; | |
2841 | ||
2842 | if (conn->le_rx_phy & HCI_LE_SET_PHY_CODED) | |
2843 | phys |= BT_PHY_LE_CODED_RX; | |
2844 | ||
2845 | break; | |
2846 | } | |
2847 | ||
eab2404b LAD |
2848 | return phys; |
2849 | } | |
1a942de0 BG |
2850 | |
2851 | int hci_abort_conn(struct hci_conn *conn, u8 reason) | |
2852 | { | |
2853 | int r = 0; | |
2854 | ||
b62e7220 LAD |
2855 | if (test_and_set_bit(HCI_CONN_CANCEL, &conn->flags)) |
2856 | return 0; | |
2857 | ||
1a942de0 BG |
2858 | switch (conn->state) { |
2859 | case BT_CONNECTED: | |
2860 | case BT_CONFIG: | |
2861 | if (conn->type == AMP_LINK) { | |
2862 | struct hci_cp_disconn_phy_link cp; | |
2863 | ||
2864 | cp.phy_handle = HCI_PHY_HANDLE(conn->handle); | |
2865 | cp.reason = reason; | |
2866 | r = hci_send_cmd(conn->hdev, HCI_OP_DISCONN_PHY_LINK, | |
2867 | sizeof(cp), &cp); | |
2868 | } else { | |
2869 | struct hci_cp_disconnect dc; | |
2870 | ||
2871 | dc.handle = cpu_to_le16(conn->handle); | |
2872 | dc.reason = reason; | |
2873 | r = hci_send_cmd(conn->hdev, HCI_OP_DISCONNECT, | |
2874 | sizeof(dc), &dc); | |
2875 | } | |
2876 | ||
2877 | conn->state = BT_DISCONN; | |
2878 | ||
2879 | break; | |
2880 | case BT_CONNECT: | |
2881 | if (conn->type == LE_LINK) { | |
2882 | if (test_bit(HCI_CONN_SCANNING, &conn->flags)) | |
2883 | break; | |
2884 | r = hci_send_cmd(conn->hdev, | |
2885 | HCI_OP_LE_CREATE_CONN_CANCEL, 0, NULL); | |
2886 | } else if (conn->type == ACL_LINK) { | |
2887 | if (conn->hdev->hci_ver < BLUETOOTH_VER_1_2) | |
2888 | break; | |
2889 | r = hci_send_cmd(conn->hdev, | |
2890 | HCI_OP_CREATE_CONN_CANCEL, | |
2891 | 6, &conn->dst); | |
2892 | } | |
2893 | break; | |
2894 | case BT_CONNECT2: | |
2895 | if (conn->type == ACL_LINK) { | |
2896 | struct hci_cp_reject_conn_req rej; | |
2897 | ||
2898 | bacpy(&rej.bdaddr, &conn->dst); | |
2899 | rej.reason = reason; | |
2900 | ||
2901 | r = hci_send_cmd(conn->hdev, | |
2902 | HCI_OP_REJECT_CONN_REQ, | |
2903 | sizeof(rej), &rej); | |
2904 | } else if (conn->type == SCO_LINK || conn->type == ESCO_LINK) { | |
2905 | struct hci_cp_reject_sync_conn_req rej; | |
2906 | ||
2907 | bacpy(&rej.bdaddr, &conn->dst); | |
2908 | ||
2909 | /* SCO rejection has its own limited set of | |
2910 | * allowed error values (0x0D-0x0F) which isn't | |
2911 | * compatible with most values passed to this | |
2912 | * function. To be safe hard-code one of the | |
2913 | * values that's suitable for SCO. | |
2914 | */ | |
2915 | rej.reason = HCI_ERROR_REJ_LIMITED_RESOURCES; | |
2916 | ||
2917 | r = hci_send_cmd(conn->hdev, | |
2918 | HCI_OP_REJECT_SYNC_CONN_REQ, | |
2919 | sizeof(rej), &rej); | |
2920 | } | |
2921 | break; | |
2922 | default: | |
2923 | conn->state = BT_CLOSED; | |
2924 | break; | |
2925 | } | |
2926 | ||
2927 | return r; | |
2928 | } |