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Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
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 | ||
1da177e4 LT |
27 | #include <linux/module.h> |
28 | ||
29 | #include <linux/types.h> | |
30 | #include <linux/errno.h> | |
31 | #include <linux/kernel.h> | |
1da177e4 LT |
32 | #include <linux/slab.h> |
33 | #include <linux/poll.h> | |
34 | #include <linux/fcntl.h> | |
35 | #include <linux/init.h> | |
36 | #include <linux/skbuff.h> | |
37 | #include <linux/interrupt.h> | |
38 | #include <linux/notifier.h> | |
39 | #include <net/sock.h> | |
40 | ||
41 | #include <asm/system.h> | |
42 | #include <asm/uaccess.h> | |
43 | #include <asm/unaligned.h> | |
44 | ||
45 | #include <net/bluetooth/bluetooth.h> | |
46 | #include <net/bluetooth/hci_core.h> | |
47 | ||
4c67bc74 | 48 | void hci_acl_connect(struct hci_conn *conn) |
1da177e4 LT |
49 | { |
50 | struct hci_dev *hdev = conn->hdev; | |
51 | struct inquiry_entry *ie; | |
52 | struct hci_cp_create_conn cp; | |
53 | ||
54 | BT_DBG("%p", conn); | |
55 | ||
56 | conn->state = BT_CONNECT; | |
a8746417 MH |
57 | conn->out = 1; |
58 | ||
1da177e4 LT |
59 | conn->link_mode = HCI_LM_MASTER; |
60 | ||
4c67bc74 MH |
61 | conn->attempt++; |
62 | ||
e4e8e37c MH |
63 | conn->link_policy = hdev->link_policy; |
64 | ||
1da177e4 LT |
65 | memset(&cp, 0, sizeof(cp)); |
66 | bacpy(&cp.bdaddr, &conn->dst); | |
67 | cp.pscan_rep_mode = 0x02; | |
68 | ||
41a96212 MH |
69 | if ((ie = hci_inquiry_cache_lookup(hdev, &conn->dst))) { |
70 | if (inquiry_entry_age(ie) <= INQUIRY_ENTRY_AGE_MAX) { | |
71 | cp.pscan_rep_mode = ie->data.pscan_rep_mode; | |
72 | cp.pscan_mode = ie->data.pscan_mode; | |
73 | cp.clock_offset = ie->data.clock_offset | | |
74 | cpu_to_le16(0x8000); | |
75 | } | |
76 | ||
1da177e4 | 77 | memcpy(conn->dev_class, ie->data.dev_class, 3); |
41a96212 | 78 | conn->ssp_mode = ie->data.ssp_mode; |
1da177e4 LT |
79 | } |
80 | ||
a8746417 | 81 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
1da177e4 | 82 | if (lmp_rswitch_capable(hdev) && !(hdev->link_mode & HCI_LM_MASTER)) |
b6a0dc82 | 83 | cp.role_switch = 0x01; |
1da177e4 | 84 | else |
b6a0dc82 | 85 | cp.role_switch = 0x00; |
4c67bc74 | 86 | |
a9de9248 | 87 | hci_send_cmd(hdev, HCI_OP_CREATE_CONN, sizeof(cp), &cp); |
1da177e4 LT |
88 | } |
89 | ||
6ac59344 MH |
90 | static void hci_acl_connect_cancel(struct hci_conn *conn) |
91 | { | |
92 | struct hci_cp_create_conn_cancel cp; | |
93 | ||
94 | BT_DBG("%p", conn); | |
95 | ||
96 | if (conn->hdev->hci_ver < 2) | |
97 | return; | |
98 | ||
99 | bacpy(&cp.bdaddr, &conn->dst); | |
a9de9248 | 100 | hci_send_cmd(conn->hdev, HCI_OP_CREATE_CONN_CANCEL, sizeof(cp), &cp); |
6ac59344 MH |
101 | } |
102 | ||
1da177e4 LT |
103 | void hci_acl_disconn(struct hci_conn *conn, __u8 reason) |
104 | { | |
105 | struct hci_cp_disconnect cp; | |
106 | ||
107 | BT_DBG("%p", conn); | |
108 | ||
109 | conn->state = BT_DISCONN; | |
110 | ||
aca3192c | 111 | cp.handle = cpu_to_le16(conn->handle); |
1da177e4 | 112 | cp.reason = reason; |
a9de9248 | 113 | hci_send_cmd(conn->hdev, HCI_OP_DISCONNECT, sizeof(cp), &cp); |
1da177e4 LT |
114 | } |
115 | ||
116 | void hci_add_sco(struct hci_conn *conn, __u16 handle) | |
117 | { | |
118 | struct hci_dev *hdev = conn->hdev; | |
119 | struct hci_cp_add_sco cp; | |
120 | ||
121 | BT_DBG("%p", conn); | |
122 | ||
123 | conn->state = BT_CONNECT; | |
124 | conn->out = 1; | |
125 | ||
aca3192c | 126 | cp.handle = cpu_to_le16(handle); |
a8746417 | 127 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
1da177e4 | 128 | |
a9de9248 | 129 | hci_send_cmd(hdev, HCI_OP_ADD_SCO, sizeof(cp), &cp); |
1da177e4 LT |
130 | } |
131 | ||
b6a0dc82 MH |
132 | void hci_setup_sync(struct hci_conn *conn, __u16 handle) |
133 | { | |
134 | struct hci_dev *hdev = conn->hdev; | |
135 | struct hci_cp_setup_sync_conn cp; | |
136 | ||
137 | BT_DBG("%p", conn); | |
138 | ||
139 | conn->state = BT_CONNECT; | |
140 | conn->out = 1; | |
141 | ||
142 | cp.handle = cpu_to_le16(handle); | |
a8746417 | 143 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
b6a0dc82 MH |
144 | |
145 | cp.tx_bandwidth = cpu_to_le32(0x00001f40); | |
146 | cp.rx_bandwidth = cpu_to_le32(0x00001f40); | |
147 | cp.max_latency = cpu_to_le16(0xffff); | |
148 | cp.voice_setting = cpu_to_le16(hdev->voice_setting); | |
149 | cp.retrans_effort = 0xff; | |
150 | ||
151 | hci_send_cmd(hdev, HCI_OP_SETUP_SYNC_CONN, sizeof(cp), &cp); | |
152 | } | |
153 | ||
1da177e4 LT |
154 | static void hci_conn_timeout(unsigned long arg) |
155 | { | |
04837f64 MH |
156 | struct hci_conn *conn = (void *) arg; |
157 | struct hci_dev *hdev = conn->hdev; | |
1da177e4 LT |
158 | |
159 | BT_DBG("conn %p state %d", conn, conn->state); | |
160 | ||
161 | if (atomic_read(&conn->refcnt)) | |
162 | return; | |
163 | ||
164 | hci_dev_lock(hdev); | |
6ac59344 MH |
165 | |
166 | switch (conn->state) { | |
167 | case BT_CONNECT: | |
769be974 | 168 | case BT_CONNECT2: |
b6a0dc82 MH |
169 | if (conn->type == ACL_LINK) |
170 | hci_acl_connect_cancel(conn); | |
171 | else | |
172 | hci_acl_disconn(conn, 0x13); | |
6ac59344 | 173 | break; |
769be974 | 174 | case BT_CONFIG: |
8e87d142 | 175 | case BT_CONNECTED: |
1da177e4 | 176 | hci_acl_disconn(conn, 0x13); |
6ac59344 MH |
177 | break; |
178 | default: | |
1da177e4 | 179 | conn->state = BT_CLOSED; |
6ac59344 MH |
180 | break; |
181 | } | |
182 | ||
1da177e4 | 183 | hci_dev_unlock(hdev); |
1da177e4 LT |
184 | } |
185 | ||
04837f64 | 186 | static void hci_conn_idle(unsigned long arg) |
1da177e4 | 187 | { |
04837f64 MH |
188 | struct hci_conn *conn = (void *) arg; |
189 | ||
190 | BT_DBG("conn %p mode %d", conn, conn->mode); | |
191 | ||
192 | hci_conn_enter_sniff_mode(conn); | |
1da177e4 LT |
193 | } |
194 | ||
195 | struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst) | |
196 | { | |
197 | struct hci_conn *conn; | |
198 | ||
199 | BT_DBG("%s dst %s", hdev->name, batostr(dst)); | |
200 | ||
04837f64 MH |
201 | conn = kzalloc(sizeof(struct hci_conn), GFP_ATOMIC); |
202 | if (!conn) | |
1da177e4 | 203 | return NULL; |
1da177e4 LT |
204 | |
205 | bacpy(&conn->dst, dst); | |
a8746417 MH |
206 | conn->hdev = hdev; |
207 | conn->type = type; | |
208 | conn->mode = HCI_CM_ACTIVE; | |
209 | conn->state = BT_OPEN; | |
1da177e4 | 210 | |
04837f64 MH |
211 | conn->power_save = 1; |
212 | ||
a8746417 MH |
213 | switch (type) { |
214 | case ACL_LINK: | |
215 | conn->pkt_type = hdev->pkt_type & ACL_PTYPE_MASK; | |
216 | break; | |
217 | case SCO_LINK: | |
218 | if (lmp_esco_capable(hdev)) | |
219 | conn->pkt_type = hdev->esco_type & SCO_ESCO_MASK; | |
220 | else | |
221 | conn->pkt_type = hdev->pkt_type & SCO_PTYPE_MASK; | |
222 | break; | |
223 | case ESCO_LINK: | |
224 | conn->pkt_type = hdev->esco_type; | |
225 | break; | |
226 | } | |
227 | ||
1da177e4 | 228 | skb_queue_head_init(&conn->data_q); |
04837f64 | 229 | |
b24b8a24 PE |
230 | setup_timer(&conn->disc_timer, hci_conn_timeout, (unsigned long)conn); |
231 | setup_timer(&conn->idle_timer, hci_conn_idle, (unsigned long)conn); | |
1da177e4 LT |
232 | |
233 | atomic_set(&conn->refcnt, 0); | |
234 | ||
235 | hci_dev_hold(hdev); | |
236 | ||
237 | tasklet_disable(&hdev->tx_task); | |
238 | ||
239 | hci_conn_hash_add(hdev, conn); | |
240 | if (hdev->notify) | |
241 | hdev->notify(hdev, HCI_NOTIFY_CONN_ADD); | |
242 | ||
243 | tasklet_enable(&hdev->tx_task); | |
244 | ||
245 | return conn; | |
246 | } | |
247 | ||
248 | int hci_conn_del(struct hci_conn *conn) | |
249 | { | |
250 | struct hci_dev *hdev = conn->hdev; | |
251 | ||
252 | BT_DBG("%s conn %p handle %d", hdev->name, conn, conn->handle); | |
253 | ||
04837f64 MH |
254 | del_timer(&conn->idle_timer); |
255 | ||
256 | del_timer(&conn->disc_timer); | |
1da177e4 | 257 | |
5b7f9909 | 258 | if (conn->type == ACL_LINK) { |
1da177e4 LT |
259 | struct hci_conn *sco = conn->link; |
260 | if (sco) | |
261 | sco->link = NULL; | |
262 | ||
263 | /* Unacked frames */ | |
264 | hdev->acl_cnt += conn->sent; | |
5b7f9909 MH |
265 | } else { |
266 | struct hci_conn *acl = conn->link; | |
267 | if (acl) { | |
268 | acl->link = NULL; | |
269 | hci_conn_put(acl); | |
270 | } | |
1da177e4 LT |
271 | } |
272 | ||
273 | tasklet_disable(&hdev->tx_task); | |
7d0db0a3 | 274 | |
1da177e4 LT |
275 | hci_conn_hash_del(hdev, conn); |
276 | if (hdev->notify) | |
277 | hdev->notify(hdev, HCI_NOTIFY_CONN_DEL); | |
7d0db0a3 | 278 | |
1da177e4 | 279 | tasklet_enable(&hdev->tx_task); |
7d0db0a3 | 280 | |
1da177e4 | 281 | skb_queue_purge(&conn->data_q); |
1da177e4 | 282 | |
1da177e4 LT |
283 | return 0; |
284 | } | |
285 | ||
286 | struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src) | |
287 | { | |
288 | int use_src = bacmp(src, BDADDR_ANY); | |
289 | struct hci_dev *hdev = NULL; | |
290 | struct list_head *p; | |
291 | ||
292 | BT_DBG("%s -> %s", batostr(src), batostr(dst)); | |
293 | ||
294 | read_lock_bh(&hci_dev_list_lock); | |
295 | ||
296 | list_for_each(p, &hci_dev_list) { | |
297 | struct hci_dev *d = list_entry(p, struct hci_dev, list); | |
298 | ||
299 | if (!test_bit(HCI_UP, &d->flags) || test_bit(HCI_RAW, &d->flags)) | |
300 | continue; | |
301 | ||
8e87d142 | 302 | /* Simple routing: |
1da177e4 LT |
303 | * No source address - find interface with bdaddr != dst |
304 | * Source address - find interface with bdaddr == src | |
305 | */ | |
306 | ||
307 | if (use_src) { | |
308 | if (!bacmp(&d->bdaddr, src)) { | |
309 | hdev = d; break; | |
310 | } | |
311 | } else { | |
312 | if (bacmp(&d->bdaddr, dst)) { | |
313 | hdev = d; break; | |
314 | } | |
315 | } | |
316 | } | |
317 | ||
318 | if (hdev) | |
319 | hdev = hci_dev_hold(hdev); | |
320 | ||
321 | read_unlock_bh(&hci_dev_list_lock); | |
322 | return hdev; | |
323 | } | |
324 | EXPORT_SYMBOL(hci_get_route); | |
325 | ||
326 | /* Create SCO or ACL connection. | |
327 | * Device _must_ be locked */ | |
8c1b2355 | 328 | struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8 sec_level, __u8 auth_type) |
1da177e4 LT |
329 | { |
330 | struct hci_conn *acl; | |
5b7f9909 | 331 | struct hci_conn *sco; |
1da177e4 LT |
332 | |
333 | BT_DBG("%s dst %s", hdev->name, batostr(dst)); | |
334 | ||
335 | if (!(acl = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst))) { | |
336 | if (!(acl = hci_conn_add(hdev, ACL_LINK, dst))) | |
337 | return NULL; | |
338 | } | |
339 | ||
340 | hci_conn_hold(acl); | |
341 | ||
09ab6f4c | 342 | if (acl->state == BT_OPEN || acl->state == BT_CLOSED) { |
8c1b2355 | 343 | acl->sec_level = sec_level; |
09ab6f4c | 344 | acl->auth_type = auth_type; |
1da177e4 | 345 | hci_acl_connect(acl); |
09ab6f4c | 346 | } |
1da177e4 | 347 | |
5b7f9909 MH |
348 | if (type == ACL_LINK) |
349 | return acl; | |
1da177e4 | 350 | |
5b7f9909 MH |
351 | if (!(sco = hci_conn_hash_lookup_ba(hdev, type, dst))) { |
352 | if (!(sco = hci_conn_add(hdev, type, dst))) { | |
353 | hci_conn_put(acl); | |
354 | return NULL; | |
1da177e4 | 355 | } |
5b7f9909 | 356 | } |
1da177e4 | 357 | |
5b7f9909 MH |
358 | acl->link = sco; |
359 | sco->link = acl; | |
1da177e4 | 360 | |
5b7f9909 | 361 | hci_conn_hold(sco); |
1da177e4 | 362 | |
5b7f9909 | 363 | if (acl->state == BT_CONNECTED && |
b6a0dc82 MH |
364 | (sco->state == BT_OPEN || sco->state == BT_CLOSED)) { |
365 | if (lmp_esco_capable(hdev)) | |
366 | hci_setup_sync(sco, acl->handle); | |
367 | else | |
368 | hci_add_sco(sco, acl->handle); | |
369 | } | |
5b7f9909 MH |
370 | |
371 | return sco; | |
1da177e4 LT |
372 | } |
373 | EXPORT_SYMBOL(hci_connect); | |
374 | ||
e7c29cb1 MH |
375 | /* Check link security requirement */ |
376 | int hci_conn_check_link_mode(struct hci_conn *conn) | |
377 | { | |
378 | BT_DBG("conn %p", conn); | |
379 | ||
380 | if (conn->ssp_mode > 0 && conn->hdev->ssp_mode > 0 && | |
381 | !(conn->link_mode & HCI_LM_ENCRYPT)) | |
382 | return 0; | |
383 | ||
384 | return 1; | |
385 | } | |
386 | EXPORT_SYMBOL(hci_conn_check_link_mode); | |
387 | ||
1da177e4 | 388 | /* Authenticate remote device */ |
8c1b2355 | 389 | static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level) |
1da177e4 LT |
390 | { |
391 | BT_DBG("conn %p", conn); | |
392 | ||
8c1b2355 MH |
393 | if (sec_level > conn->sec_level) |
394 | conn->link_mode &= ~HCI_LM_AUTH; | |
395 | ||
396 | conn->sec_level = sec_level; | |
397 | ||
398 | if (sec_level == BT_SECURITY_HIGH) | |
399 | conn->auth_type |= 0x01; | |
40be492f | 400 | |
1da177e4 LT |
401 | if (conn->link_mode & HCI_LM_AUTH) |
402 | return 1; | |
403 | ||
404 | if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->pend)) { | |
405 | struct hci_cp_auth_requested cp; | |
aca3192c | 406 | cp.handle = cpu_to_le16(conn->handle); |
40be492f MH |
407 | hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED, |
408 | sizeof(cp), &cp); | |
1da177e4 | 409 | } |
8c1b2355 | 410 | |
1da177e4 LT |
411 | return 0; |
412 | } | |
1da177e4 | 413 | |
8c1b2355 MH |
414 | /* Enable security */ |
415 | int hci_conn_security(struct hci_conn *conn, __u8 sec_level) | |
1da177e4 LT |
416 | { |
417 | BT_DBG("conn %p", conn); | |
418 | ||
8c1b2355 MH |
419 | if (sec_level == BT_SECURITY_SDP) |
420 | return 1; | |
421 | ||
422 | if (sec_level == BT_SECURITY_LOW) { | |
423 | if (conn->ssp_mode > 0 && conn->hdev->ssp_mode > 0) | |
424 | return hci_conn_auth(conn, sec_level); | |
425 | else | |
426 | return 1; | |
427 | } | |
428 | ||
1da177e4 | 429 | if (conn->link_mode & HCI_LM_ENCRYPT) |
8c1b2355 | 430 | return hci_conn_auth(conn, sec_level); |
1da177e4 LT |
431 | |
432 | if (test_and_set_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend)) | |
433 | return 0; | |
434 | ||
8c1b2355 | 435 | if (hci_conn_auth(conn, sec_level)) { |
1da177e4 | 436 | struct hci_cp_set_conn_encrypt cp; |
aca3192c | 437 | cp.handle = cpu_to_le16(conn->handle); |
8e87d142 | 438 | cp.encrypt = 1; |
40be492f MH |
439 | hci_send_cmd(conn->hdev, HCI_OP_SET_CONN_ENCRYPT, |
440 | sizeof(cp), &cp); | |
1da177e4 | 441 | } |
8c1b2355 | 442 | |
1da177e4 LT |
443 | return 0; |
444 | } | |
8c1b2355 | 445 | EXPORT_SYMBOL(hci_conn_security); |
1da177e4 LT |
446 | |
447 | /* Change link key */ | |
448 | int hci_conn_change_link_key(struct hci_conn *conn) | |
449 | { | |
450 | BT_DBG("conn %p", conn); | |
451 | ||
452 | if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->pend)) { | |
453 | struct hci_cp_change_conn_link_key cp; | |
aca3192c | 454 | cp.handle = cpu_to_le16(conn->handle); |
40be492f MH |
455 | hci_send_cmd(conn->hdev, HCI_OP_CHANGE_CONN_LINK_KEY, |
456 | sizeof(cp), &cp); | |
1da177e4 | 457 | } |
8c1b2355 | 458 | |
1da177e4 LT |
459 | return 0; |
460 | } | |
461 | EXPORT_SYMBOL(hci_conn_change_link_key); | |
462 | ||
463 | /* Switch role */ | |
8c1b2355 | 464 | int hci_conn_switch_role(struct hci_conn *conn, __u8 role) |
1da177e4 LT |
465 | { |
466 | BT_DBG("conn %p", conn); | |
467 | ||
468 | if (!role && conn->link_mode & HCI_LM_MASTER) | |
469 | return 1; | |
470 | ||
471 | if (!test_and_set_bit(HCI_CONN_RSWITCH_PEND, &conn->pend)) { | |
472 | struct hci_cp_switch_role cp; | |
473 | bacpy(&cp.bdaddr, &conn->dst); | |
474 | cp.role = role; | |
a9de9248 | 475 | hci_send_cmd(conn->hdev, HCI_OP_SWITCH_ROLE, sizeof(cp), &cp); |
1da177e4 | 476 | } |
8c1b2355 | 477 | |
1da177e4 LT |
478 | return 0; |
479 | } | |
480 | EXPORT_SYMBOL(hci_conn_switch_role); | |
481 | ||
04837f64 MH |
482 | /* Enter active mode */ |
483 | void hci_conn_enter_active_mode(struct hci_conn *conn) | |
484 | { | |
485 | struct hci_dev *hdev = conn->hdev; | |
486 | ||
487 | BT_DBG("conn %p mode %d", conn, conn->mode); | |
488 | ||
489 | if (test_bit(HCI_RAW, &hdev->flags)) | |
490 | return; | |
491 | ||
492 | if (conn->mode != HCI_CM_SNIFF || !conn->power_save) | |
493 | goto timer; | |
494 | ||
495 | if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->pend)) { | |
496 | struct hci_cp_exit_sniff_mode cp; | |
aca3192c | 497 | cp.handle = cpu_to_le16(conn->handle); |
a9de9248 | 498 | hci_send_cmd(hdev, HCI_OP_EXIT_SNIFF_MODE, sizeof(cp), &cp); |
04837f64 MH |
499 | } |
500 | ||
501 | timer: | |
502 | if (hdev->idle_timeout > 0) | |
503 | mod_timer(&conn->idle_timer, | |
504 | jiffies + msecs_to_jiffies(hdev->idle_timeout)); | |
505 | } | |
506 | ||
507 | /* Enter sniff mode */ | |
508 | void hci_conn_enter_sniff_mode(struct hci_conn *conn) | |
509 | { | |
510 | struct hci_dev *hdev = conn->hdev; | |
511 | ||
512 | BT_DBG("conn %p mode %d", conn, conn->mode); | |
513 | ||
514 | if (test_bit(HCI_RAW, &hdev->flags)) | |
515 | return; | |
516 | ||
517 | if (!lmp_sniff_capable(hdev) || !lmp_sniff_capable(conn)) | |
518 | return; | |
519 | ||
520 | if (conn->mode != HCI_CM_ACTIVE || !(conn->link_policy & HCI_LP_SNIFF)) | |
521 | return; | |
522 | ||
523 | if (lmp_sniffsubr_capable(hdev) && lmp_sniffsubr_capable(conn)) { | |
524 | struct hci_cp_sniff_subrate cp; | |
aca3192c YH |
525 | cp.handle = cpu_to_le16(conn->handle); |
526 | cp.max_latency = cpu_to_le16(0); | |
527 | cp.min_remote_timeout = cpu_to_le16(0); | |
528 | cp.min_local_timeout = cpu_to_le16(0); | |
a9de9248 | 529 | hci_send_cmd(hdev, HCI_OP_SNIFF_SUBRATE, sizeof(cp), &cp); |
04837f64 MH |
530 | } |
531 | ||
532 | if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->pend)) { | |
533 | struct hci_cp_sniff_mode cp; | |
aca3192c YH |
534 | cp.handle = cpu_to_le16(conn->handle); |
535 | cp.max_interval = cpu_to_le16(hdev->sniff_max_interval); | |
536 | cp.min_interval = cpu_to_le16(hdev->sniff_min_interval); | |
537 | cp.attempt = cpu_to_le16(4); | |
538 | cp.timeout = cpu_to_le16(1); | |
a9de9248 | 539 | hci_send_cmd(hdev, HCI_OP_SNIFF_MODE, sizeof(cp), &cp); |
04837f64 MH |
540 | } |
541 | } | |
542 | ||
1da177e4 LT |
543 | /* Drop all connection on the device */ |
544 | void hci_conn_hash_flush(struct hci_dev *hdev) | |
545 | { | |
546 | struct hci_conn_hash *h = &hdev->conn_hash; | |
547 | struct list_head *p; | |
548 | ||
549 | BT_DBG("hdev %s", hdev->name); | |
550 | ||
551 | p = h->list.next; | |
552 | while (p != &h->list) { | |
553 | struct hci_conn *c; | |
554 | ||
555 | c = list_entry(p, struct hci_conn, list); | |
556 | p = p->next; | |
557 | ||
558 | c->state = BT_CLOSED; | |
559 | ||
7d0db0a3 MH |
560 | hci_conn_del_sysfs(c); |
561 | ||
1da177e4 LT |
562 | hci_proto_disconn_ind(c, 0x16); |
563 | hci_conn_del(c); | |
564 | } | |
565 | } | |
566 | ||
a9de9248 MH |
567 | /* Check pending connect attempts */ |
568 | void hci_conn_check_pending(struct hci_dev *hdev) | |
569 | { | |
570 | struct hci_conn *conn; | |
571 | ||
572 | BT_DBG("hdev %s", hdev->name); | |
573 | ||
574 | hci_dev_lock(hdev); | |
575 | ||
576 | conn = hci_conn_hash_lookup_state(hdev, ACL_LINK, BT_CONNECT2); | |
577 | if (conn) | |
578 | hci_acl_connect(conn); | |
579 | ||
580 | hci_dev_unlock(hdev); | |
581 | } | |
582 | ||
1da177e4 LT |
583 | int hci_get_conn_list(void __user *arg) |
584 | { | |
585 | struct hci_conn_list_req req, *cl; | |
586 | struct hci_conn_info *ci; | |
587 | struct hci_dev *hdev; | |
588 | struct list_head *p; | |
589 | int n = 0, size, err; | |
590 | ||
591 | if (copy_from_user(&req, arg, sizeof(req))) | |
592 | return -EFAULT; | |
593 | ||
594 | if (!req.conn_num || req.conn_num > (PAGE_SIZE * 2) / sizeof(*ci)) | |
595 | return -EINVAL; | |
596 | ||
597 | size = sizeof(req) + req.conn_num * sizeof(*ci); | |
598 | ||
12fe2c58 | 599 | if (!(cl = kmalloc(size, GFP_KERNEL))) |
1da177e4 LT |
600 | return -ENOMEM; |
601 | ||
602 | if (!(hdev = hci_dev_get(req.dev_id))) { | |
603 | kfree(cl); | |
604 | return -ENODEV; | |
605 | } | |
606 | ||
607 | ci = cl->conn_info; | |
608 | ||
609 | hci_dev_lock_bh(hdev); | |
610 | list_for_each(p, &hdev->conn_hash.list) { | |
611 | register struct hci_conn *c; | |
612 | c = list_entry(p, struct hci_conn, list); | |
613 | ||
614 | bacpy(&(ci + n)->bdaddr, &c->dst); | |
615 | (ci + n)->handle = c->handle; | |
616 | (ci + n)->type = c->type; | |
617 | (ci + n)->out = c->out; | |
618 | (ci + n)->state = c->state; | |
619 | (ci + n)->link_mode = c->link_mode; | |
620 | if (++n >= req.conn_num) | |
621 | break; | |
622 | } | |
623 | hci_dev_unlock_bh(hdev); | |
624 | ||
625 | cl->dev_id = hdev->id; | |
626 | cl->conn_num = n; | |
627 | size = sizeof(req) + n * sizeof(*ci); | |
628 | ||
629 | hci_dev_put(hdev); | |
630 | ||
631 | err = copy_to_user(arg, cl, size); | |
632 | kfree(cl); | |
633 | ||
634 | return err ? -EFAULT : 0; | |
635 | } | |
636 | ||
637 | int hci_get_conn_info(struct hci_dev *hdev, void __user *arg) | |
638 | { | |
639 | struct hci_conn_info_req req; | |
640 | struct hci_conn_info ci; | |
641 | struct hci_conn *conn; | |
642 | char __user *ptr = arg + sizeof(req); | |
643 | ||
644 | if (copy_from_user(&req, arg, sizeof(req))) | |
645 | return -EFAULT; | |
646 | ||
647 | hci_dev_lock_bh(hdev); | |
648 | conn = hci_conn_hash_lookup_ba(hdev, req.type, &req.bdaddr); | |
649 | if (conn) { | |
650 | bacpy(&ci.bdaddr, &conn->dst); | |
651 | ci.handle = conn->handle; | |
652 | ci.type = conn->type; | |
653 | ci.out = conn->out; | |
654 | ci.state = conn->state; | |
655 | ci.link_mode = conn->link_mode; | |
656 | } | |
657 | hci_dev_unlock_bh(hdev); | |
658 | ||
659 | if (!conn) | |
660 | return -ENOENT; | |
661 | ||
662 | return copy_to_user(ptr, &ci, sizeof(ci)) ? -EFAULT : 0; | |
663 | } | |
40be492f MH |
664 | |
665 | int hci_get_auth_info(struct hci_dev *hdev, void __user *arg) | |
666 | { | |
667 | struct hci_auth_info_req req; | |
668 | struct hci_conn *conn; | |
669 | ||
670 | if (copy_from_user(&req, arg, sizeof(req))) | |
671 | return -EFAULT; | |
672 | ||
673 | hci_dev_lock_bh(hdev); | |
674 | conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &req.bdaddr); | |
675 | if (conn) | |
676 | req.type = conn->auth_type; | |
677 | hci_dev_unlock_bh(hdev); | |
678 | ||
679 | if (!conn) | |
680 | return -ENOENT; | |
681 | ||
682 | return copy_to_user(arg, &req, sizeof(req)) ? -EFAULT : 0; | |
683 | } |