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. |
1da177e4 LT |
4 | |
5 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License version 2 as | |
9 | published by the Free Software Foundation; | |
10 | ||
11 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
12 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
13 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
14 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
15 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
16 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
17 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
18 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
19 | ||
8e87d142 YH |
20 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
21 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
22 | SOFTWARE IS DISCLAIMED. |
23 | */ | |
24 | ||
25 | /* Bluetooth HCI connection handling. */ | |
26 | ||
8c520a59 | 27 | #include <linux/export.h> |
1da177e4 LT |
28 | |
29 | #include <net/bluetooth/bluetooth.h> | |
30 | #include <net/bluetooth/hci_core.h> | |
9740e49d | 31 | #include <net/bluetooth/a2mp.h> |
d8343f12 | 32 | #include <net/bluetooth/smp.h> |
1da177e4 | 33 | |
fcd89c09 VT |
34 | static void hci_le_connect(struct hci_conn *conn) |
35 | { | |
36 | struct hci_dev *hdev = conn->hdev; | |
37 | struct hci_cp_le_create_conn cp; | |
38 | ||
39 | conn->state = BT_CONNECT; | |
a0c808b3 | 40 | conn->out = true; |
b92a6223 | 41 | conn->link_mode |= HCI_LM_MASTER; |
7b5c0d52 | 42 | conn->sec_level = BT_SECURITY_LOW; |
fcd89c09 VT |
43 | |
44 | memset(&cp, 0, sizeof(cp)); | |
82781e63 AE |
45 | cp.scan_interval = __constant_cpu_to_le16(0x0060); |
46 | cp.scan_window = __constant_cpu_to_le16(0x0030); | |
fcd89c09 | 47 | bacpy(&cp.peer_addr, &conn->dst); |
6d3ce0e7 | 48 | cp.peer_addr_type = conn->dst_type; |
82781e63 AE |
49 | cp.conn_interval_min = __constant_cpu_to_le16(0x0028); |
50 | cp.conn_interval_max = __constant_cpu_to_le16(0x0038); | |
51 | cp.supervision_timeout = __constant_cpu_to_le16(0x002a); | |
52 | cp.min_ce_len = __constant_cpu_to_le16(0x0000); | |
53 | cp.max_ce_len = __constant_cpu_to_le16(0x0000); | |
fcd89c09 VT |
54 | |
55 | hci_send_cmd(hdev, HCI_OP_LE_CREATE_CONN, sizeof(cp), &cp); | |
56 | } | |
57 | ||
58 | static void hci_le_connect_cancel(struct hci_conn *conn) | |
59 | { | |
60 | hci_send_cmd(conn->hdev, HCI_OP_LE_CREATE_CONN_CANCEL, 0, NULL); | |
61 | } | |
62 | ||
4c67bc74 | 63 | void hci_acl_connect(struct hci_conn *conn) |
1da177e4 LT |
64 | { |
65 | struct hci_dev *hdev = conn->hdev; | |
66 | struct inquiry_entry *ie; | |
67 | struct hci_cp_create_conn cp; | |
68 | ||
42d2d87c | 69 | BT_DBG("hcon %p", conn); |
1da177e4 LT |
70 | |
71 | conn->state = BT_CONNECT; | |
a0c808b3 | 72 | conn->out = true; |
a8746417 | 73 | |
1da177e4 LT |
74 | conn->link_mode = HCI_LM_MASTER; |
75 | ||
4c67bc74 MH |
76 | conn->attempt++; |
77 | ||
e4e8e37c MH |
78 | conn->link_policy = hdev->link_policy; |
79 | ||
1da177e4 LT |
80 | memset(&cp, 0, sizeof(cp)); |
81 | bacpy(&cp.bdaddr, &conn->dst); | |
82 | cp.pscan_rep_mode = 0x02; | |
83 | ||
70f23020 AE |
84 | ie = hci_inquiry_cache_lookup(hdev, &conn->dst); |
85 | if (ie) { | |
41a96212 MH |
86 | if (inquiry_entry_age(ie) <= INQUIRY_ENTRY_AGE_MAX) { |
87 | cp.pscan_rep_mode = ie->data.pscan_rep_mode; | |
88 | cp.pscan_mode = ie->data.pscan_mode; | |
89 | cp.clock_offset = ie->data.clock_offset | | |
82781e63 | 90 | __constant_cpu_to_le16(0x8000); |
41a96212 MH |
91 | } |
92 | ||
1da177e4 | 93 | memcpy(conn->dev_class, ie->data.dev_class, 3); |
58a681ef JH |
94 | if (ie->data.ssp_mode > 0) |
95 | set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); | |
1da177e4 LT |
96 | } |
97 | ||
a8746417 | 98 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
1da177e4 | 99 | if (lmp_rswitch_capable(hdev) && !(hdev->link_mode & HCI_LM_MASTER)) |
b6a0dc82 | 100 | cp.role_switch = 0x01; |
1da177e4 | 101 | else |
b6a0dc82 | 102 | cp.role_switch = 0x00; |
4c67bc74 | 103 | |
a9de9248 | 104 | hci_send_cmd(hdev, HCI_OP_CREATE_CONN, sizeof(cp), &cp); |
1da177e4 LT |
105 | } |
106 | ||
6ac59344 MH |
107 | static void hci_acl_connect_cancel(struct hci_conn *conn) |
108 | { | |
109 | struct hci_cp_create_conn_cancel cp; | |
110 | ||
38b3fef1 | 111 | BT_DBG("hcon %p", conn); |
6ac59344 | 112 | |
d095c1eb | 113 | if (conn->hdev->hci_ver < BLUETOOTH_VER_1_2) |
6ac59344 MH |
114 | return; |
115 | ||
116 | bacpy(&cp.bdaddr, &conn->dst); | |
a9de9248 | 117 | hci_send_cmd(conn->hdev, HCI_OP_CREATE_CONN_CANCEL, sizeof(cp), &cp); |
6ac59344 MH |
118 | } |
119 | ||
1da177e4 LT |
120 | void hci_acl_disconn(struct hci_conn *conn, __u8 reason) |
121 | { | |
122 | struct hci_cp_disconnect cp; | |
123 | ||
38b3fef1 | 124 | BT_DBG("hcon %p", conn); |
1da177e4 LT |
125 | |
126 | conn->state = BT_DISCONN; | |
127 | ||
aca3192c | 128 | cp.handle = cpu_to_le16(conn->handle); |
1da177e4 | 129 | cp.reason = reason; |
a9de9248 | 130 | hci_send_cmd(conn->hdev, HCI_OP_DISCONNECT, sizeof(cp), &cp); |
1da177e4 LT |
131 | } |
132 | ||
133 | void hci_add_sco(struct hci_conn *conn, __u16 handle) | |
134 | { | |
135 | struct hci_dev *hdev = conn->hdev; | |
136 | struct hci_cp_add_sco cp; | |
137 | ||
38b3fef1 | 138 | BT_DBG("hcon %p", conn); |
1da177e4 LT |
139 | |
140 | conn->state = BT_CONNECT; | |
a0c808b3 | 141 | conn->out = true; |
1da177e4 | 142 | |
efc7688b MH |
143 | conn->attempt++; |
144 | ||
aca3192c | 145 | cp.handle = cpu_to_le16(handle); |
a8746417 | 146 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
1da177e4 | 147 | |
a9de9248 | 148 | hci_send_cmd(hdev, HCI_OP_ADD_SCO, sizeof(cp), &cp); |
1da177e4 LT |
149 | } |
150 | ||
b6a0dc82 MH |
151 | void hci_setup_sync(struct hci_conn *conn, __u16 handle) |
152 | { | |
153 | struct hci_dev *hdev = conn->hdev; | |
154 | struct hci_cp_setup_sync_conn cp; | |
155 | ||
38b3fef1 | 156 | BT_DBG("hcon %p", conn); |
b6a0dc82 MH |
157 | |
158 | conn->state = BT_CONNECT; | |
a0c808b3 | 159 | conn->out = true; |
b6a0dc82 | 160 | |
efc7688b MH |
161 | conn->attempt++; |
162 | ||
b6a0dc82 | 163 | cp.handle = cpu_to_le16(handle); |
a8746417 | 164 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
b6a0dc82 | 165 | |
82781e63 AE |
166 | cp.tx_bandwidth = __constant_cpu_to_le32(0x00001f40); |
167 | cp.rx_bandwidth = __constant_cpu_to_le32(0x00001f40); | |
168 | cp.max_latency = __constant_cpu_to_le16(0xffff); | |
b6a0dc82 MH |
169 | cp.voice_setting = cpu_to_le16(hdev->voice_setting); |
170 | cp.retrans_effort = 0xff; | |
171 | ||
172 | hci_send_cmd(hdev, HCI_OP_SETUP_SYNC_CONN, sizeof(cp), &cp); | |
173 | } | |
174 | ||
2ce603eb | 175 | void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, |
5974e4c4 | 176 | u16 latency, u16 to_multiplier) |
2ce603eb CT |
177 | { |
178 | struct hci_cp_le_conn_update cp; | |
179 | struct hci_dev *hdev = conn->hdev; | |
180 | ||
181 | memset(&cp, 0, sizeof(cp)); | |
182 | ||
183 | cp.handle = cpu_to_le16(conn->handle); | |
184 | cp.conn_interval_min = cpu_to_le16(min); | |
185 | cp.conn_interval_max = cpu_to_le16(max); | |
186 | cp.conn_latency = cpu_to_le16(latency); | |
187 | cp.supervision_timeout = cpu_to_le16(to_multiplier); | |
82781e63 AE |
188 | cp.min_ce_len = __constant_cpu_to_le16(0x0001); |
189 | cp.max_ce_len = __constant_cpu_to_le16(0x0001); | |
2ce603eb CT |
190 | |
191 | hci_send_cmd(hdev, HCI_OP_LE_CONN_UPDATE, sizeof(cp), &cp); | |
192 | } | |
2ce603eb | 193 | |
a7a595f6 | 194 | void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8], |
5974e4c4 | 195 | __u8 ltk[16]) |
a7a595f6 VCG |
196 | { |
197 | struct hci_dev *hdev = conn->hdev; | |
198 | struct hci_cp_le_start_enc cp; | |
199 | ||
38b3fef1 | 200 | BT_DBG("hcon %p", conn); |
a7a595f6 VCG |
201 | |
202 | memset(&cp, 0, sizeof(cp)); | |
203 | ||
204 | cp.handle = cpu_to_le16(conn->handle); | |
205 | memcpy(cp.ltk, ltk, sizeof(cp.ltk)); | |
206 | cp.ediv = ediv; | |
51beabdf | 207 | memcpy(cp.rand, rand, sizeof(cp.rand)); |
a7a595f6 VCG |
208 | |
209 | hci_send_cmd(hdev, HCI_OP_LE_START_ENC, sizeof(cp), &cp); | |
210 | } | |
a7a595f6 | 211 | |
e73439d8 MH |
212 | /* Device _must_ be locked */ |
213 | void hci_sco_setup(struct hci_conn *conn, __u8 status) | |
214 | { | |
215 | struct hci_conn *sco = conn->link; | |
216 | ||
e73439d8 MH |
217 | if (!sco) |
218 | return; | |
219 | ||
38b3fef1 AE |
220 | BT_DBG("hcon %p", conn); |
221 | ||
e73439d8 MH |
222 | if (!status) { |
223 | if (lmp_esco_capable(conn->hdev)) | |
224 | hci_setup_sync(sco, conn->handle); | |
225 | else | |
226 | hci_add_sco(sco, conn->handle); | |
227 | } else { | |
228 | hci_proto_connect_cfm(sco, status); | |
229 | hci_conn_del(sco); | |
230 | } | |
231 | } | |
232 | ||
19c40e3b | 233 | static void hci_conn_timeout(struct work_struct *work) |
1da177e4 | 234 | { |
19c40e3b | 235 | struct hci_conn *conn = container_of(work, struct hci_conn, |
5974e4c4 | 236 | disc_work.work); |
2950f21a | 237 | __u8 reason; |
1da177e4 | 238 | |
38b3fef1 | 239 | BT_DBG("hcon %p state %s", conn, state_to_string(conn->state)); |
1da177e4 LT |
240 | |
241 | if (atomic_read(&conn->refcnt)) | |
242 | return; | |
243 | ||
6ac59344 MH |
244 | switch (conn->state) { |
245 | case BT_CONNECT: | |
769be974 | 246 | case BT_CONNECT2: |
fcd89c09 VT |
247 | if (conn->out) { |
248 | if (conn->type == ACL_LINK) | |
249 | hci_acl_connect_cancel(conn); | |
250 | else if (conn->type == LE_LINK) | |
251 | hci_le_connect_cancel(conn); | |
252 | } | |
6ac59344 | 253 | break; |
769be974 | 254 | case BT_CONFIG: |
8e87d142 | 255 | case BT_CONNECTED: |
2950f21a MH |
256 | reason = hci_proto_disconn_ind(conn); |
257 | hci_acl_disconn(conn, reason); | |
6ac59344 MH |
258 | break; |
259 | default: | |
1da177e4 | 260 | conn->state = BT_CLOSED; |
6ac59344 MH |
261 | break; |
262 | } | |
1da177e4 LT |
263 | } |
264 | ||
416dc94b GP |
265 | /* Enter sniff mode */ |
266 | static void hci_conn_enter_sniff_mode(struct hci_conn *conn) | |
267 | { | |
268 | struct hci_dev *hdev = conn->hdev; | |
269 | ||
38b3fef1 | 270 | BT_DBG("hcon %p mode %d", conn, conn->mode); |
416dc94b GP |
271 | |
272 | if (test_bit(HCI_RAW, &hdev->flags)) | |
273 | return; | |
274 | ||
275 | if (!lmp_sniff_capable(hdev) || !lmp_sniff_capable(conn)) | |
276 | return; | |
277 | ||
278 | if (conn->mode != HCI_CM_ACTIVE || !(conn->link_policy & HCI_LP_SNIFF)) | |
279 | return; | |
280 | ||
281 | if (lmp_sniffsubr_capable(hdev) && lmp_sniffsubr_capable(conn)) { | |
282 | struct hci_cp_sniff_subrate cp; | |
283 | cp.handle = cpu_to_le16(conn->handle); | |
82781e63 AE |
284 | cp.max_latency = __constant_cpu_to_le16(0); |
285 | cp.min_remote_timeout = __constant_cpu_to_le16(0); | |
286 | cp.min_local_timeout = __constant_cpu_to_le16(0); | |
416dc94b GP |
287 | hci_send_cmd(hdev, HCI_OP_SNIFF_SUBRATE, sizeof(cp), &cp); |
288 | } | |
289 | ||
51a8efd7 | 290 | if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags)) { |
416dc94b GP |
291 | struct hci_cp_sniff_mode cp; |
292 | cp.handle = cpu_to_le16(conn->handle); | |
293 | cp.max_interval = cpu_to_le16(hdev->sniff_max_interval); | |
294 | cp.min_interval = cpu_to_le16(hdev->sniff_min_interval); | |
82781e63 AE |
295 | cp.attempt = __constant_cpu_to_le16(4); |
296 | cp.timeout = __constant_cpu_to_le16(1); | |
416dc94b GP |
297 | hci_send_cmd(hdev, HCI_OP_SNIFF_MODE, sizeof(cp), &cp); |
298 | } | |
299 | } | |
300 | ||
04837f64 | 301 | static void hci_conn_idle(unsigned long arg) |
1da177e4 | 302 | { |
04837f64 MH |
303 | struct hci_conn *conn = (void *) arg; |
304 | ||
38b3fef1 | 305 | BT_DBG("hcon %p mode %d", conn, conn->mode); |
04837f64 MH |
306 | |
307 | hci_conn_enter_sniff_mode(conn); | |
1da177e4 LT |
308 | } |
309 | ||
9f61656a JH |
310 | static void hci_conn_auto_accept(unsigned long arg) |
311 | { | |
312 | struct hci_conn *conn = (void *) arg; | |
313 | struct hci_dev *hdev = conn->hdev; | |
314 | ||
9f61656a | 315 | hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, sizeof(conn->dst), |
5974e4c4 | 316 | &conn->dst); |
9f61656a JH |
317 | } |
318 | ||
1da177e4 LT |
319 | struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst) |
320 | { | |
321 | struct hci_conn *conn; | |
322 | ||
323 | BT_DBG("%s dst %s", hdev->name, batostr(dst)); | |
324 | ||
cb601d7e | 325 | conn = kzalloc(sizeof(struct hci_conn), GFP_KERNEL); |
04837f64 | 326 | if (!conn) |
1da177e4 | 327 | return NULL; |
1da177e4 LT |
328 | |
329 | bacpy(&conn->dst, dst); | |
a8746417 MH |
330 | conn->hdev = hdev; |
331 | conn->type = type; | |
332 | conn->mode = HCI_CM_ACTIVE; | |
333 | conn->state = BT_OPEN; | |
93f19c9f | 334 | conn->auth_type = HCI_AT_GENERAL_BONDING; |
17fa4b9d | 335 | conn->io_capability = hdev->io_capability; |
a9583556 | 336 | conn->remote_auth = 0xff; |
13d39315 | 337 | conn->key_type = 0xff; |
1da177e4 | 338 | |
58a681ef | 339 | set_bit(HCI_CONN_POWER_SAVE, &conn->flags); |
052b30b0 | 340 | conn->disc_timeout = HCI_DISCONN_TIMEOUT; |
04837f64 | 341 | |
a8746417 MH |
342 | switch (type) { |
343 | case ACL_LINK: | |
344 | conn->pkt_type = hdev->pkt_type & ACL_PTYPE_MASK; | |
345 | break; | |
346 | case SCO_LINK: | |
347 | if (lmp_esco_capable(hdev)) | |
efc7688b MH |
348 | conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | |
349 | (hdev->esco_type & EDR_ESCO_MASK); | |
a8746417 MH |
350 | else |
351 | conn->pkt_type = hdev->pkt_type & SCO_PTYPE_MASK; | |
352 | break; | |
353 | case ESCO_LINK: | |
efc7688b | 354 | conn->pkt_type = hdev->esco_type & ~EDR_ESCO_MASK; |
a8746417 MH |
355 | break; |
356 | } | |
357 | ||
1da177e4 | 358 | skb_queue_head_init(&conn->data_q); |
04837f64 | 359 | |
70c1f20b | 360 | INIT_LIST_HEAD(&conn->chan_list); |
73d80deb | 361 | |
19c40e3b | 362 | INIT_DELAYED_WORK(&conn->disc_work, hci_conn_timeout); |
b24b8a24 | 363 | setup_timer(&conn->idle_timer, hci_conn_idle, (unsigned long)conn); |
9f61656a | 364 | setup_timer(&conn->auto_accept_timer, hci_conn_auto_accept, |
5974e4c4 | 365 | (unsigned long) conn); |
1da177e4 LT |
366 | |
367 | atomic_set(&conn->refcnt, 0); | |
368 | ||
369 | hci_dev_hold(hdev); | |
370 | ||
1da177e4 | 371 | hci_conn_hash_add(hdev, conn); |
3c54711c | 372 | if (hdev->notify) |
1da177e4 LT |
373 | hdev->notify(hdev, HCI_NOTIFY_CONN_ADD); |
374 | ||
9eba32b8 MH |
375 | atomic_set(&conn->devref, 0); |
376 | ||
a67e899c MH |
377 | hci_conn_init_sysfs(conn); |
378 | ||
1da177e4 LT |
379 | return conn; |
380 | } | |
381 | ||
382 | int hci_conn_del(struct hci_conn *conn) | |
383 | { | |
384 | struct hci_dev *hdev = conn->hdev; | |
385 | ||
38b3fef1 | 386 | BT_DBG("%s hcon %p handle %d", hdev->name, conn, conn->handle); |
1da177e4 | 387 | |
04837f64 MH |
388 | del_timer(&conn->idle_timer); |
389 | ||
19c40e3b | 390 | cancel_delayed_work_sync(&conn->disc_work); |
1da177e4 | 391 | |
9f61656a JH |
392 | del_timer(&conn->auto_accept_timer); |
393 | ||
5b7f9909 | 394 | if (conn->type == ACL_LINK) { |
1da177e4 LT |
395 | struct hci_conn *sco = conn->link; |
396 | if (sco) | |
397 | sco->link = NULL; | |
398 | ||
399 | /* Unacked frames */ | |
400 | hdev->acl_cnt += conn->sent; | |
6ed58ec5 VT |
401 | } else if (conn->type == LE_LINK) { |
402 | if (hdev->le_pkts) | |
403 | hdev->le_cnt += conn->sent; | |
404 | else | |
405 | hdev->acl_cnt += conn->sent; | |
5b7f9909 MH |
406 | } else { |
407 | struct hci_conn *acl = conn->link; | |
408 | if (acl) { | |
409 | acl->link = NULL; | |
410 | hci_conn_put(acl); | |
411 | } | |
1da177e4 LT |
412 | } |
413 | ||
2c33c06a | 414 | hci_chan_list_flush(conn); |
73d80deb | 415 | |
9740e49d AE |
416 | if (conn->amp_mgr) |
417 | amp_mgr_put(conn->amp_mgr); | |
418 | ||
1da177e4 | 419 | hci_conn_hash_del(hdev, conn); |
3c54711c | 420 | if (hdev->notify) |
1da177e4 | 421 | hdev->notify(hdev, HCI_NOTIFY_CONN_DEL); |
7d0db0a3 | 422 | |
1da177e4 | 423 | skb_queue_purge(&conn->data_q); |
1da177e4 | 424 | |
9eba32b8 | 425 | hci_conn_put_device(conn); |
2ae9a6be | 426 | |
384943ec MH |
427 | hci_dev_put(hdev); |
428 | ||
163f4dab TT |
429 | if (conn->handle == 0) |
430 | kfree(conn); | |
431 | ||
1da177e4 LT |
432 | return 0; |
433 | } | |
434 | ||
435 | struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src) | |
436 | { | |
437 | int use_src = bacmp(src, BDADDR_ANY); | |
8035ded4 | 438 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
439 | |
440 | BT_DBG("%s -> %s", batostr(src), batostr(dst)); | |
441 | ||
f20d09d5 | 442 | read_lock(&hci_dev_list_lock); |
1da177e4 | 443 | |
8035ded4 | 444 | list_for_each_entry(d, &hci_dev_list, list) { |
8fc9ced3 | 445 | if (!test_bit(HCI_UP, &d->flags) || |
d300fa9b AE |
446 | test_bit(HCI_RAW, &d->flags) || |
447 | d->dev_type != HCI_BREDR) | |
1da177e4 LT |
448 | continue; |
449 | ||
8e87d142 | 450 | /* Simple routing: |
1da177e4 LT |
451 | * No source address - find interface with bdaddr != dst |
452 | * Source address - find interface with bdaddr == src | |
453 | */ | |
454 | ||
455 | if (use_src) { | |
456 | if (!bacmp(&d->bdaddr, src)) { | |
457 | hdev = d; break; | |
458 | } | |
459 | } else { | |
460 | if (bacmp(&d->bdaddr, dst)) { | |
461 | hdev = d; break; | |
462 | } | |
463 | } | |
464 | } | |
465 | ||
466 | if (hdev) | |
467 | hdev = hci_dev_hold(hdev); | |
468 | ||
f20d09d5 | 469 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
470 | return hdev; |
471 | } | |
472 | EXPORT_SYMBOL(hci_get_route); | |
473 | ||
fcd89c09 | 474 | /* Create SCO, ACL or LE connection. |
1da177e4 | 475 | * Device _must_ be locked */ |
b12f62cf AG |
476 | struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, |
477 | __u8 dst_type, __u8 sec_level, __u8 auth_type) | |
1da177e4 LT |
478 | { |
479 | struct hci_conn *acl; | |
5b7f9909 | 480 | struct hci_conn *sco; |
fcd89c09 | 481 | struct hci_conn *le; |
1da177e4 LT |
482 | |
483 | BT_DBG("%s dst %s", hdev->name, batostr(dst)); | |
484 | ||
fcd89c09 VT |
485 | if (type == LE_LINK) { |
486 | le = hci_conn_hash_lookup_ba(hdev, LE_LINK, dst); | |
9f0caeb1 | 487 | if (!le) { |
dfc94dbd AK |
488 | le = hci_conn_hash_lookup_state(hdev, LE_LINK, |
489 | BT_CONNECT); | |
490 | if (le) | |
491 | return ERR_PTR(-EBUSY); | |
492 | ||
9f0caeb1 VCG |
493 | le = hci_conn_add(hdev, LE_LINK, dst); |
494 | if (!le) | |
495 | return ERR_PTR(-ENOMEM); | |
496 | ||
b12f62cf | 497 | le->dst_type = bdaddr_to_le(dst_type); |
9f0caeb1 VCG |
498 | hci_le_connect(le); |
499 | } | |
eda42b50 | 500 | |
9f0caeb1 VCG |
501 | le->pending_sec_level = sec_level; |
502 | le->auth_type = auth_type; | |
fcd89c09 VT |
503 | |
504 | hci_conn_hold(le); | |
505 | ||
506 | return le; | |
507 | } | |
508 | ||
70f23020 AE |
509 | acl = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst); |
510 | if (!acl) { | |
511 | acl = hci_conn_add(hdev, ACL_LINK, dst); | |
512 | if (!acl) | |
48c7aba9 | 513 | return ERR_PTR(-ENOMEM); |
1da177e4 LT |
514 | } |
515 | ||
516 | hci_conn_hold(acl); | |
517 | ||
09ab6f4c | 518 | if (acl->state == BT_OPEN || acl->state == BT_CLOSED) { |
765c2a96 JH |
519 | acl->sec_level = BT_SECURITY_LOW; |
520 | acl->pending_sec_level = sec_level; | |
09ab6f4c | 521 | acl->auth_type = auth_type; |
1da177e4 | 522 | hci_acl_connect(acl); |
09ab6f4c | 523 | } |
1da177e4 | 524 | |
5b7f9909 MH |
525 | if (type == ACL_LINK) |
526 | return acl; | |
1da177e4 | 527 | |
70f23020 AE |
528 | sco = hci_conn_hash_lookup_ba(hdev, type, dst); |
529 | if (!sco) { | |
530 | sco = hci_conn_add(hdev, type, dst); | |
531 | if (!sco) { | |
5b7f9909 | 532 | hci_conn_put(acl); |
48c7aba9 | 533 | return ERR_PTR(-ENOMEM); |
1da177e4 | 534 | } |
5b7f9909 | 535 | } |
1da177e4 | 536 | |
5b7f9909 MH |
537 | acl->link = sco; |
538 | sco->link = acl; | |
1da177e4 | 539 | |
5b7f9909 | 540 | hci_conn_hold(sco); |
1da177e4 | 541 | |
5b7f9909 | 542 | if (acl->state == BT_CONNECTED && |
5974e4c4 | 543 | (sco->state == BT_OPEN || sco->state == BT_CLOSED)) { |
58a681ef | 544 | set_bit(HCI_CONN_POWER_SAVE, &acl->flags); |
14b12d0b | 545 | hci_conn_enter_active_mode(acl, BT_POWER_FORCE_ACTIVE_ON); |
c390216b | 546 | |
51a8efd7 | 547 | if (test_bit(HCI_CONN_MODE_CHANGE_PEND, &acl->flags)) { |
e73439d8 | 548 | /* defer SCO setup until mode change completed */ |
51a8efd7 | 549 | set_bit(HCI_CONN_SCO_SETUP_PEND, &acl->flags); |
e73439d8 MH |
550 | return sco; |
551 | } | |
552 | ||
553 | hci_sco_setup(acl, 0x00); | |
b6a0dc82 | 554 | } |
5b7f9909 MH |
555 | |
556 | return sco; | |
1da177e4 | 557 | } |
1da177e4 | 558 | |
e7c29cb1 MH |
559 | /* Check link security requirement */ |
560 | int hci_conn_check_link_mode(struct hci_conn *conn) | |
561 | { | |
38b3fef1 | 562 | BT_DBG("hcon %p", conn); |
e7c29cb1 | 563 | |
aa64a8b5 | 564 | if (hci_conn_ssp_enabled(conn) && !(conn->link_mode & HCI_LM_ENCRYPT)) |
e7c29cb1 MH |
565 | return 0; |
566 | ||
567 | return 1; | |
568 | } | |
e7c29cb1 | 569 | |
1da177e4 | 570 | /* Authenticate remote device */ |
0684e5f9 | 571 | static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type) |
1da177e4 | 572 | { |
38b3fef1 | 573 | BT_DBG("hcon %p", conn); |
1da177e4 | 574 | |
765c2a96 JH |
575 | if (conn->pending_sec_level > sec_level) |
576 | sec_level = conn->pending_sec_level; | |
577 | ||
96a31833 | 578 | if (sec_level > conn->sec_level) |
765c2a96 | 579 | conn->pending_sec_level = sec_level; |
96a31833 | 580 | else if (conn->link_mode & HCI_LM_AUTH) |
1da177e4 LT |
581 | return 1; |
582 | ||
65cf686e JH |
583 | /* Make sure we preserve an existing MITM requirement*/ |
584 | auth_type |= (conn->auth_type & 0x01); | |
585 | ||
96a31833 MH |
586 | conn->auth_type = auth_type; |
587 | ||
51a8efd7 | 588 | if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { |
1da177e4 | 589 | struct hci_cp_auth_requested cp; |
b7d05bad PH |
590 | |
591 | /* encrypt must be pending if auth is also pending */ | |
592 | set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); | |
593 | ||
aca3192c | 594 | cp.handle = cpu_to_le16(conn->handle); |
40be492f | 595 | hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED, |
5974e4c4 | 596 | sizeof(cp), &cp); |
19f8def0 | 597 | if (conn->key_type != 0xff) |
51a8efd7 | 598 | set_bit(HCI_CONN_REAUTH_PEND, &conn->flags); |
1da177e4 | 599 | } |
8c1b2355 | 600 | |
1da177e4 LT |
601 | return 0; |
602 | } | |
1da177e4 | 603 | |
13d39315 WR |
604 | /* Encrypt the the link */ |
605 | static void hci_conn_encrypt(struct hci_conn *conn) | |
606 | { | |
38b3fef1 | 607 | BT_DBG("hcon %p", conn); |
13d39315 | 608 | |
51a8efd7 | 609 | if (!test_and_set_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { |
13d39315 WR |
610 | struct hci_cp_set_conn_encrypt cp; |
611 | cp.handle = cpu_to_le16(conn->handle); | |
612 | cp.encrypt = 0x01; | |
613 | hci_send_cmd(conn->hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), | |
5974e4c4 | 614 | &cp); |
13d39315 WR |
615 | } |
616 | } | |
617 | ||
8c1b2355 | 618 | /* Enable security */ |
0684e5f9 | 619 | int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type) |
1da177e4 | 620 | { |
38b3fef1 | 621 | BT_DBG("hcon %p", conn); |
1da177e4 | 622 | |
d8343f12 VCG |
623 | if (conn->type == LE_LINK) |
624 | return smp_conn_security(conn, sec_level); | |
625 | ||
13d39315 | 626 | /* For sdp we don't need the link key. */ |
8c1b2355 MH |
627 | if (sec_level == BT_SECURITY_SDP) |
628 | return 1; | |
629 | ||
13d39315 WR |
630 | /* For non 2.1 devices and low security level we don't need the link |
631 | key. */ | |
aa64a8b5 | 632 | if (sec_level == BT_SECURITY_LOW && !hci_conn_ssp_enabled(conn)) |
3fdca1e1 | 633 | return 1; |
8c1b2355 | 634 | |
13d39315 WR |
635 | /* For other security levels we need the link key. */ |
636 | if (!(conn->link_mode & HCI_LM_AUTH)) | |
637 | goto auth; | |
638 | ||
639 | /* An authenticated combination key has sufficient security for any | |
640 | security level. */ | |
641 | if (conn->key_type == HCI_LK_AUTH_COMBINATION) | |
642 | goto encrypt; | |
643 | ||
644 | /* An unauthenticated combination key has sufficient security for | |
645 | security level 1 and 2. */ | |
646 | if (conn->key_type == HCI_LK_UNAUTH_COMBINATION && | |
5974e4c4 | 647 | (sec_level == BT_SECURITY_MEDIUM || sec_level == BT_SECURITY_LOW)) |
13d39315 WR |
648 | goto encrypt; |
649 | ||
650 | /* A combination key has always sufficient security for the security | |
651 | levels 1 or 2. High security level requires the combination key | |
652 | is generated using maximum PIN code length (16). | |
653 | For pre 2.1 units. */ | |
654 | if (conn->key_type == HCI_LK_COMBINATION && | |
5974e4c4 | 655 | (sec_level != BT_SECURITY_HIGH || conn->pin_length == 16)) |
13d39315 WR |
656 | goto encrypt; |
657 | ||
658 | auth: | |
51a8efd7 | 659 | if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) |
1da177e4 LT |
660 | return 0; |
661 | ||
6fdf658c LAD |
662 | if (!hci_conn_auth(conn, sec_level, auth_type)) |
663 | return 0; | |
13d39315 WR |
664 | |
665 | encrypt: | |
666 | if (conn->link_mode & HCI_LM_ENCRYPT) | |
667 | return 1; | |
8c1b2355 | 668 | |
13d39315 | 669 | hci_conn_encrypt(conn); |
1da177e4 LT |
670 | return 0; |
671 | } | |
8c1b2355 | 672 | EXPORT_SYMBOL(hci_conn_security); |
1da177e4 | 673 | |
b3b1b061 WR |
674 | /* Check secure link requirement */ |
675 | int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level) | |
676 | { | |
38b3fef1 | 677 | BT_DBG("hcon %p", conn); |
b3b1b061 WR |
678 | |
679 | if (sec_level != BT_SECURITY_HIGH) | |
680 | return 1; /* Accept if non-secure is required */ | |
681 | ||
ef4177e2 | 682 | if (conn->sec_level == BT_SECURITY_HIGH) |
b3b1b061 WR |
683 | return 1; |
684 | ||
685 | return 0; /* Reject not secure link */ | |
686 | } | |
687 | EXPORT_SYMBOL(hci_conn_check_secure); | |
688 | ||
1da177e4 LT |
689 | /* Change link key */ |
690 | int hci_conn_change_link_key(struct hci_conn *conn) | |
691 | { | |
38b3fef1 | 692 | BT_DBG("hcon %p", conn); |
1da177e4 | 693 | |
51a8efd7 | 694 | if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { |
1da177e4 | 695 | struct hci_cp_change_conn_link_key cp; |
aca3192c | 696 | cp.handle = cpu_to_le16(conn->handle); |
40be492f | 697 | hci_send_cmd(conn->hdev, HCI_OP_CHANGE_CONN_LINK_KEY, |
5974e4c4 | 698 | sizeof(cp), &cp); |
1da177e4 | 699 | } |
8c1b2355 | 700 | |
1da177e4 LT |
701 | return 0; |
702 | } | |
1da177e4 LT |
703 | |
704 | /* Switch role */ | |
8c1b2355 | 705 | int hci_conn_switch_role(struct hci_conn *conn, __u8 role) |
1da177e4 | 706 | { |
38b3fef1 | 707 | BT_DBG("hcon %p", conn); |
1da177e4 LT |
708 | |
709 | if (!role && conn->link_mode & HCI_LM_MASTER) | |
710 | return 1; | |
711 | ||
51a8efd7 | 712 | if (!test_and_set_bit(HCI_CONN_RSWITCH_PEND, &conn->flags)) { |
1da177e4 LT |
713 | struct hci_cp_switch_role cp; |
714 | bacpy(&cp.bdaddr, &conn->dst); | |
715 | cp.role = role; | |
a9de9248 | 716 | hci_send_cmd(conn->hdev, HCI_OP_SWITCH_ROLE, sizeof(cp), &cp); |
1da177e4 | 717 | } |
8c1b2355 | 718 | |
1da177e4 LT |
719 | return 0; |
720 | } | |
721 | EXPORT_SYMBOL(hci_conn_switch_role); | |
722 | ||
04837f64 | 723 | /* Enter active mode */ |
14b12d0b | 724 | void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active) |
04837f64 MH |
725 | { |
726 | struct hci_dev *hdev = conn->hdev; | |
727 | ||
38b3fef1 | 728 | BT_DBG("hcon %p mode %d", conn, conn->mode); |
04837f64 MH |
729 | |
730 | if (test_bit(HCI_RAW, &hdev->flags)) | |
731 | return; | |
732 | ||
14b12d0b JG |
733 | if (conn->mode != HCI_CM_SNIFF) |
734 | goto timer; | |
735 | ||
58a681ef | 736 | if (!test_bit(HCI_CONN_POWER_SAVE, &conn->flags) && !force_active) |
04837f64 MH |
737 | goto timer; |
738 | ||
51a8efd7 | 739 | if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags)) { |
04837f64 | 740 | struct hci_cp_exit_sniff_mode cp; |
aca3192c | 741 | cp.handle = cpu_to_le16(conn->handle); |
a9de9248 | 742 | hci_send_cmd(hdev, HCI_OP_EXIT_SNIFF_MODE, sizeof(cp), &cp); |
04837f64 MH |
743 | } |
744 | ||
745 | timer: | |
746 | if (hdev->idle_timeout > 0) | |
747 | mod_timer(&conn->idle_timer, | |
5974e4c4 | 748 | jiffies + msecs_to_jiffies(hdev->idle_timeout)); |
04837f64 MH |
749 | } |
750 | ||
1da177e4 LT |
751 | /* Drop all connection on the device */ |
752 | void hci_conn_hash_flush(struct hci_dev *hdev) | |
753 | { | |
754 | struct hci_conn_hash *h = &hdev->conn_hash; | |
3c4e0df0 | 755 | struct hci_conn *c, *n; |
1da177e4 LT |
756 | |
757 | BT_DBG("hdev %s", hdev->name); | |
758 | ||
3c4e0df0 | 759 | list_for_each_entry_safe(c, n, &h->list, list) { |
1da177e4 LT |
760 | c->state = BT_CLOSED; |
761 | ||
9f5a0d7b | 762 | hci_proto_disconn_cfm(c, HCI_ERROR_LOCAL_HOST_TERM); |
1da177e4 LT |
763 | hci_conn_del(c); |
764 | } | |
765 | } | |
766 | ||
a9de9248 MH |
767 | /* Check pending connect attempts */ |
768 | void hci_conn_check_pending(struct hci_dev *hdev) | |
769 | { | |
770 | struct hci_conn *conn; | |
771 | ||
772 | BT_DBG("hdev %s", hdev->name); | |
773 | ||
774 | hci_dev_lock(hdev); | |
775 | ||
776 | conn = hci_conn_hash_lookup_state(hdev, ACL_LINK, BT_CONNECT2); | |
777 | if (conn) | |
778 | hci_acl_connect(conn); | |
779 | ||
780 | hci_dev_unlock(hdev); | |
781 | } | |
782 | ||
9eba32b8 MH |
783 | void hci_conn_hold_device(struct hci_conn *conn) |
784 | { | |
785 | atomic_inc(&conn->devref); | |
786 | } | |
787 | EXPORT_SYMBOL(hci_conn_hold_device); | |
788 | ||
789 | void hci_conn_put_device(struct hci_conn *conn) | |
790 | { | |
791 | if (atomic_dec_and_test(&conn->devref)) | |
792 | hci_conn_del_sysfs(conn); | |
793 | } | |
794 | EXPORT_SYMBOL(hci_conn_put_device); | |
795 | ||
1da177e4 LT |
796 | int hci_get_conn_list(void __user *arg) |
797 | { | |
fc5fef61 | 798 | struct hci_conn *c; |
1da177e4 LT |
799 | struct hci_conn_list_req req, *cl; |
800 | struct hci_conn_info *ci; | |
801 | struct hci_dev *hdev; | |
1da177e4 LT |
802 | int n = 0, size, err; |
803 | ||
804 | if (copy_from_user(&req, arg, sizeof(req))) | |
805 | return -EFAULT; | |
806 | ||
807 | if (!req.conn_num || req.conn_num > (PAGE_SIZE * 2) / sizeof(*ci)) | |
808 | return -EINVAL; | |
809 | ||
810 | size = sizeof(req) + req.conn_num * sizeof(*ci); | |
811 | ||
70f23020 AE |
812 | cl = kmalloc(size, GFP_KERNEL); |
813 | if (!cl) | |
1da177e4 LT |
814 | return -ENOMEM; |
815 | ||
70f23020 AE |
816 | hdev = hci_dev_get(req.dev_id); |
817 | if (!hdev) { | |
1da177e4 LT |
818 | kfree(cl); |
819 | return -ENODEV; | |
820 | } | |
821 | ||
822 | ci = cl->conn_info; | |
823 | ||
09fd0de5 | 824 | hci_dev_lock(hdev); |
8035ded4 | 825 | list_for_each_entry(c, &hdev->conn_hash.list, list) { |
1da177e4 LT |
826 | bacpy(&(ci + n)->bdaddr, &c->dst); |
827 | (ci + n)->handle = c->handle; | |
828 | (ci + n)->type = c->type; | |
829 | (ci + n)->out = c->out; | |
830 | (ci + n)->state = c->state; | |
831 | (ci + n)->link_mode = c->link_mode; | |
832 | if (++n >= req.conn_num) | |
833 | break; | |
834 | } | |
09fd0de5 | 835 | hci_dev_unlock(hdev); |
1da177e4 LT |
836 | |
837 | cl->dev_id = hdev->id; | |
838 | cl->conn_num = n; | |
839 | size = sizeof(req) + n * sizeof(*ci); | |
840 | ||
841 | hci_dev_put(hdev); | |
842 | ||
843 | err = copy_to_user(arg, cl, size); | |
844 | kfree(cl); | |
845 | ||
846 | return err ? -EFAULT : 0; | |
847 | } | |
848 | ||
849 | int hci_get_conn_info(struct hci_dev *hdev, void __user *arg) | |
850 | { | |
851 | struct hci_conn_info_req req; | |
852 | struct hci_conn_info ci; | |
853 | struct hci_conn *conn; | |
854 | char __user *ptr = arg + sizeof(req); | |
855 | ||
856 | if (copy_from_user(&req, arg, sizeof(req))) | |
857 | return -EFAULT; | |
858 | ||
09fd0de5 | 859 | hci_dev_lock(hdev); |
1da177e4 LT |
860 | conn = hci_conn_hash_lookup_ba(hdev, req.type, &req.bdaddr); |
861 | if (conn) { | |
862 | bacpy(&ci.bdaddr, &conn->dst); | |
863 | ci.handle = conn->handle; | |
864 | ci.type = conn->type; | |
865 | ci.out = conn->out; | |
866 | ci.state = conn->state; | |
867 | ci.link_mode = conn->link_mode; | |
868 | } | |
09fd0de5 | 869 | hci_dev_unlock(hdev); |
1da177e4 LT |
870 | |
871 | if (!conn) | |
872 | return -ENOENT; | |
873 | ||
874 | return copy_to_user(ptr, &ci, sizeof(ci)) ? -EFAULT : 0; | |
875 | } | |
40be492f MH |
876 | |
877 | int hci_get_auth_info(struct hci_dev *hdev, void __user *arg) | |
878 | { | |
879 | struct hci_auth_info_req req; | |
880 | struct hci_conn *conn; | |
881 | ||
882 | if (copy_from_user(&req, arg, sizeof(req))) | |
883 | return -EFAULT; | |
884 | ||
09fd0de5 | 885 | hci_dev_lock(hdev); |
40be492f MH |
886 | conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &req.bdaddr); |
887 | if (conn) | |
888 | req.type = conn->auth_type; | |
09fd0de5 | 889 | hci_dev_unlock(hdev); |
40be492f MH |
890 | |
891 | if (!conn) | |
892 | return -ENOENT; | |
893 | ||
894 | return copy_to_user(arg, &req, sizeof(req)) ? -EFAULT : 0; | |
895 | } | |
73d80deb LAD |
896 | |
897 | struct hci_chan *hci_chan_create(struct hci_conn *conn) | |
898 | { | |
899 | struct hci_dev *hdev = conn->hdev; | |
900 | struct hci_chan *chan; | |
901 | ||
38b3fef1 | 902 | BT_DBG("%s hcon %p", hdev->name, conn); |
73d80deb | 903 | |
75d7735c | 904 | chan = kzalloc(sizeof(struct hci_chan), GFP_KERNEL); |
73d80deb LAD |
905 | if (!chan) |
906 | return NULL; | |
907 | ||
908 | chan->conn = conn; | |
909 | skb_queue_head_init(&chan->data_q); | |
910 | ||
8192edef | 911 | list_add_rcu(&chan->list, &conn->chan_list); |
73d80deb LAD |
912 | |
913 | return chan; | |
914 | } | |
915 | ||
916 | int hci_chan_del(struct hci_chan *chan) | |
917 | { | |
918 | struct hci_conn *conn = chan->conn; | |
919 | struct hci_dev *hdev = conn->hdev; | |
920 | ||
38b3fef1 | 921 | BT_DBG("%s hcon %p chan %p", hdev->name, conn, chan); |
73d80deb | 922 | |
8192edef GP |
923 | list_del_rcu(&chan->list); |
924 | ||
925 | synchronize_rcu(); | |
73d80deb LAD |
926 | |
927 | skb_queue_purge(&chan->data_q); | |
928 | kfree(chan); | |
929 | ||
930 | return 0; | |
931 | } | |
932 | ||
2c33c06a | 933 | void hci_chan_list_flush(struct hci_conn *conn) |
73d80deb | 934 | { |
2a5a5ec6 | 935 | struct hci_chan *chan, *n; |
73d80deb | 936 | |
38b3fef1 | 937 | BT_DBG("hcon %p", conn); |
73d80deb | 938 | |
2a5a5ec6 | 939 | list_for_each_entry_safe(chan, n, &conn->chan_list, list) |
73d80deb LAD |
940 | hci_chan_del(chan); |
941 | } |