Commit | Line | Data |
---|---|---|
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 | ||
48 | #ifndef CONFIG_BT_HCI_CORE_DEBUG | |
49 | #undef BT_DBG | |
50 | #define BT_DBG(D...) | |
51 | #endif | |
52 | ||
4c67bc74 | 53 | void hci_acl_connect(struct hci_conn *conn) |
1da177e4 LT |
54 | { |
55 | struct hci_dev *hdev = conn->hdev; | |
56 | struct inquiry_entry *ie; | |
57 | struct hci_cp_create_conn cp; | |
58 | ||
59 | BT_DBG("%p", conn); | |
60 | ||
61 | conn->state = BT_CONNECT; | |
a8746417 MH |
62 | conn->out = 1; |
63 | ||
1da177e4 LT |
64 | conn->link_mode = HCI_LM_MASTER; |
65 | ||
4c67bc74 MH |
66 | conn->attempt++; |
67 | ||
e4e8e37c MH |
68 | conn->link_policy = hdev->link_policy; |
69 | ||
1da177e4 LT |
70 | memset(&cp, 0, sizeof(cp)); |
71 | bacpy(&cp.bdaddr, &conn->dst); | |
72 | cp.pscan_rep_mode = 0x02; | |
73 | ||
41a96212 MH |
74 | if ((ie = hci_inquiry_cache_lookup(hdev, &conn->dst))) { |
75 | if (inquiry_entry_age(ie) <= INQUIRY_ENTRY_AGE_MAX) { | |
76 | cp.pscan_rep_mode = ie->data.pscan_rep_mode; | |
77 | cp.pscan_mode = ie->data.pscan_mode; | |
78 | cp.clock_offset = ie->data.clock_offset | | |
79 | cpu_to_le16(0x8000); | |
80 | } | |
81 | ||
1da177e4 | 82 | memcpy(conn->dev_class, ie->data.dev_class, 3); |
41a96212 | 83 | conn->ssp_mode = ie->data.ssp_mode; |
1da177e4 LT |
84 | } |
85 | ||
a8746417 | 86 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
1da177e4 | 87 | if (lmp_rswitch_capable(hdev) && !(hdev->link_mode & HCI_LM_MASTER)) |
b6a0dc82 | 88 | cp.role_switch = 0x01; |
1da177e4 | 89 | else |
b6a0dc82 | 90 | cp.role_switch = 0x00; |
4c67bc74 | 91 | |
a9de9248 | 92 | hci_send_cmd(hdev, HCI_OP_CREATE_CONN, sizeof(cp), &cp); |
1da177e4 LT |
93 | } |
94 | ||
6ac59344 MH |
95 | static void hci_acl_connect_cancel(struct hci_conn *conn) |
96 | { | |
97 | struct hci_cp_create_conn_cancel cp; | |
98 | ||
99 | BT_DBG("%p", conn); | |
100 | ||
101 | if (conn->hdev->hci_ver < 2) | |
102 | return; | |
103 | ||
104 | bacpy(&cp.bdaddr, &conn->dst); | |
a9de9248 | 105 | hci_send_cmd(conn->hdev, HCI_OP_CREATE_CONN_CANCEL, sizeof(cp), &cp); |
6ac59344 MH |
106 | } |
107 | ||
1da177e4 LT |
108 | void hci_acl_disconn(struct hci_conn *conn, __u8 reason) |
109 | { | |
110 | struct hci_cp_disconnect cp; | |
111 | ||
112 | BT_DBG("%p", conn); | |
113 | ||
114 | conn->state = BT_DISCONN; | |
115 | ||
aca3192c | 116 | cp.handle = cpu_to_le16(conn->handle); |
1da177e4 | 117 | cp.reason = reason; |
a9de9248 | 118 | hci_send_cmd(conn->hdev, HCI_OP_DISCONNECT, sizeof(cp), &cp); |
1da177e4 LT |
119 | } |
120 | ||
121 | void hci_add_sco(struct hci_conn *conn, __u16 handle) | |
122 | { | |
123 | struct hci_dev *hdev = conn->hdev; | |
124 | struct hci_cp_add_sco cp; | |
125 | ||
126 | BT_DBG("%p", conn); | |
127 | ||
128 | conn->state = BT_CONNECT; | |
129 | conn->out = 1; | |
130 | ||
aca3192c | 131 | cp.handle = cpu_to_le16(handle); |
a8746417 | 132 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
1da177e4 | 133 | |
a9de9248 | 134 | hci_send_cmd(hdev, HCI_OP_ADD_SCO, sizeof(cp), &cp); |
1da177e4 LT |
135 | } |
136 | ||
b6a0dc82 MH |
137 | void hci_setup_sync(struct hci_conn *conn, __u16 handle) |
138 | { | |
139 | struct hci_dev *hdev = conn->hdev; | |
140 | struct hci_cp_setup_sync_conn cp; | |
141 | ||
142 | BT_DBG("%p", conn); | |
143 | ||
144 | conn->state = BT_CONNECT; | |
145 | conn->out = 1; | |
146 | ||
147 | cp.handle = cpu_to_le16(handle); | |
a8746417 | 148 | cp.pkt_type = cpu_to_le16(conn->pkt_type); |
b6a0dc82 MH |
149 | |
150 | cp.tx_bandwidth = cpu_to_le32(0x00001f40); | |
151 | cp.rx_bandwidth = cpu_to_le32(0x00001f40); | |
152 | cp.max_latency = cpu_to_le16(0xffff); | |
153 | cp.voice_setting = cpu_to_le16(hdev->voice_setting); | |
154 | cp.retrans_effort = 0xff; | |
155 | ||
156 | hci_send_cmd(hdev, HCI_OP_SETUP_SYNC_CONN, sizeof(cp), &cp); | |
157 | } | |
158 | ||
1da177e4 LT |
159 | static void hci_conn_timeout(unsigned long arg) |
160 | { | |
04837f64 MH |
161 | struct hci_conn *conn = (void *) arg; |
162 | struct hci_dev *hdev = conn->hdev; | |
1da177e4 LT |
163 | |
164 | BT_DBG("conn %p state %d", conn, conn->state); | |
165 | ||
166 | if (atomic_read(&conn->refcnt)) | |
167 | return; | |
168 | ||
169 | hci_dev_lock(hdev); | |
6ac59344 MH |
170 | |
171 | switch (conn->state) { | |
172 | case BT_CONNECT: | |
769be974 | 173 | case BT_CONNECT2: |
b6a0dc82 MH |
174 | if (conn->type == ACL_LINK) |
175 | hci_acl_connect_cancel(conn); | |
176 | else | |
177 | hci_acl_disconn(conn, 0x13); | |
6ac59344 | 178 | break; |
769be974 | 179 | case BT_CONFIG: |
8e87d142 | 180 | case BT_CONNECTED: |
1da177e4 | 181 | hci_acl_disconn(conn, 0x13); |
6ac59344 MH |
182 | break; |
183 | default: | |
1da177e4 | 184 | conn->state = BT_CLOSED; |
6ac59344 MH |
185 | break; |
186 | } | |
187 | ||
1da177e4 | 188 | hci_dev_unlock(hdev); |
1da177e4 LT |
189 | } |
190 | ||
04837f64 | 191 | static void hci_conn_idle(unsigned long arg) |
1da177e4 | 192 | { |
04837f64 MH |
193 | struct hci_conn *conn = (void *) arg; |
194 | ||
195 | BT_DBG("conn %p mode %d", conn, conn->mode); | |
196 | ||
197 | hci_conn_enter_sniff_mode(conn); | |
1da177e4 LT |
198 | } |
199 | ||
200 | struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst) | |
201 | { | |
202 | struct hci_conn *conn; | |
203 | ||
204 | BT_DBG("%s dst %s", hdev->name, batostr(dst)); | |
205 | ||
04837f64 MH |
206 | conn = kzalloc(sizeof(struct hci_conn), GFP_ATOMIC); |
207 | if (!conn) | |
1da177e4 | 208 | return NULL; |
1da177e4 LT |
209 | |
210 | bacpy(&conn->dst, dst); | |
a8746417 MH |
211 | conn->hdev = hdev; |
212 | conn->type = type; | |
213 | conn->mode = HCI_CM_ACTIVE; | |
214 | conn->state = BT_OPEN; | |
1da177e4 | 215 | |
04837f64 MH |
216 | conn->power_save = 1; |
217 | ||
a8746417 MH |
218 | switch (type) { |
219 | case ACL_LINK: | |
220 | conn->pkt_type = hdev->pkt_type & ACL_PTYPE_MASK; | |
221 | break; | |
222 | case SCO_LINK: | |
223 | if (lmp_esco_capable(hdev)) | |
224 | conn->pkt_type = hdev->esco_type & SCO_ESCO_MASK; | |
225 | else | |
226 | conn->pkt_type = hdev->pkt_type & SCO_PTYPE_MASK; | |
227 | break; | |
228 | case ESCO_LINK: | |
229 | conn->pkt_type = hdev->esco_type; | |
230 | break; | |
231 | } | |
232 | ||
1da177e4 | 233 | skb_queue_head_init(&conn->data_q); |
04837f64 | 234 | |
b24b8a24 PE |
235 | setup_timer(&conn->disc_timer, hci_conn_timeout, (unsigned long)conn); |
236 | setup_timer(&conn->idle_timer, hci_conn_idle, (unsigned long)conn); | |
1da177e4 LT |
237 | |
238 | atomic_set(&conn->refcnt, 0); | |
239 | ||
240 | hci_dev_hold(hdev); | |
241 | ||
242 | tasklet_disable(&hdev->tx_task); | |
243 | ||
244 | hci_conn_hash_add(hdev, conn); | |
245 | if (hdev->notify) | |
246 | hdev->notify(hdev, HCI_NOTIFY_CONN_ADD); | |
247 | ||
248 | tasklet_enable(&hdev->tx_task); | |
249 | ||
250 | return conn; | |
251 | } | |
252 | ||
253 | int hci_conn_del(struct hci_conn *conn) | |
254 | { | |
255 | struct hci_dev *hdev = conn->hdev; | |
256 | ||
257 | BT_DBG("%s conn %p handle %d", hdev->name, conn, conn->handle); | |
258 | ||
04837f64 MH |
259 | del_timer(&conn->idle_timer); |
260 | ||
261 | del_timer(&conn->disc_timer); | |
1da177e4 | 262 | |
5b7f9909 | 263 | if (conn->type == ACL_LINK) { |
1da177e4 LT |
264 | struct hci_conn *sco = conn->link; |
265 | if (sco) | |
266 | sco->link = NULL; | |
267 | ||
268 | /* Unacked frames */ | |
269 | hdev->acl_cnt += conn->sent; | |
5b7f9909 MH |
270 | } else { |
271 | struct hci_conn *acl = conn->link; | |
272 | if (acl) { | |
273 | acl->link = NULL; | |
274 | hci_conn_put(acl); | |
275 | } | |
1da177e4 LT |
276 | } |
277 | ||
278 | tasklet_disable(&hdev->tx_task); | |
7d0db0a3 | 279 | |
1da177e4 LT |
280 | hci_conn_hash_del(hdev, conn); |
281 | if (hdev->notify) | |
282 | hdev->notify(hdev, HCI_NOTIFY_CONN_DEL); | |
7d0db0a3 | 283 | |
1da177e4 | 284 | tasklet_enable(&hdev->tx_task); |
7d0db0a3 | 285 | |
1da177e4 | 286 | skb_queue_purge(&conn->data_q); |
1da177e4 | 287 | |
1da177e4 LT |
288 | return 0; |
289 | } | |
290 | ||
291 | struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src) | |
292 | { | |
293 | int use_src = bacmp(src, BDADDR_ANY); | |
294 | struct hci_dev *hdev = NULL; | |
295 | struct list_head *p; | |
296 | ||
297 | BT_DBG("%s -> %s", batostr(src), batostr(dst)); | |
298 | ||
299 | read_lock_bh(&hci_dev_list_lock); | |
300 | ||
301 | list_for_each(p, &hci_dev_list) { | |
302 | struct hci_dev *d = list_entry(p, struct hci_dev, list); | |
303 | ||
304 | if (!test_bit(HCI_UP, &d->flags) || test_bit(HCI_RAW, &d->flags)) | |
305 | continue; | |
306 | ||
8e87d142 | 307 | /* Simple routing: |
1da177e4 LT |
308 | * No source address - find interface with bdaddr != dst |
309 | * Source address - find interface with bdaddr == src | |
310 | */ | |
311 | ||
312 | if (use_src) { | |
313 | if (!bacmp(&d->bdaddr, src)) { | |
314 | hdev = d; break; | |
315 | } | |
316 | } else { | |
317 | if (bacmp(&d->bdaddr, dst)) { | |
318 | hdev = d; break; | |
319 | } | |
320 | } | |
321 | } | |
322 | ||
323 | if (hdev) | |
324 | hdev = hci_dev_hold(hdev); | |
325 | ||
326 | read_unlock_bh(&hci_dev_list_lock); | |
327 | return hdev; | |
328 | } | |
329 | EXPORT_SYMBOL(hci_get_route); | |
330 | ||
331 | /* Create SCO or ACL connection. | |
332 | * Device _must_ be locked */ | |
09ab6f4c | 333 | struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8 auth_type) |
1da177e4 LT |
334 | { |
335 | struct hci_conn *acl; | |
5b7f9909 | 336 | struct hci_conn *sco; |
1da177e4 LT |
337 | |
338 | BT_DBG("%s dst %s", hdev->name, batostr(dst)); | |
339 | ||
340 | if (!(acl = hci_conn_hash_lookup_ba(hdev, ACL_LINK, dst))) { | |
341 | if (!(acl = hci_conn_add(hdev, ACL_LINK, dst))) | |
342 | return NULL; | |
343 | } | |
344 | ||
345 | hci_conn_hold(acl); | |
346 | ||
09ab6f4c MH |
347 | if (acl->state == BT_OPEN || acl->state == BT_CLOSED) { |
348 | acl->auth_type = auth_type; | |
1da177e4 | 349 | hci_acl_connect(acl); |
09ab6f4c | 350 | } |
1da177e4 | 351 | |
5b7f9909 MH |
352 | if (type == ACL_LINK) |
353 | return acl; | |
1da177e4 | 354 | |
5b7f9909 MH |
355 | if (!(sco = hci_conn_hash_lookup_ba(hdev, type, dst))) { |
356 | if (!(sco = hci_conn_add(hdev, type, dst))) { | |
357 | hci_conn_put(acl); | |
358 | return NULL; | |
1da177e4 | 359 | } |
5b7f9909 | 360 | } |
1da177e4 | 361 | |
5b7f9909 MH |
362 | acl->link = sco; |
363 | sco->link = acl; | |
1da177e4 | 364 | |
5b7f9909 | 365 | hci_conn_hold(sco); |
1da177e4 | 366 | |
5b7f9909 | 367 | if (acl->state == BT_CONNECTED && |
b6a0dc82 MH |
368 | (sco->state == BT_OPEN || sco->state == BT_CLOSED)) { |
369 | if (lmp_esco_capable(hdev)) | |
370 | hci_setup_sync(sco, acl->handle); | |
371 | else | |
372 | hci_add_sco(sco, acl->handle); | |
373 | } | |
5b7f9909 MH |
374 | |
375 | return sco; | |
1da177e4 LT |
376 | } |
377 | EXPORT_SYMBOL(hci_connect); | |
378 | ||
e7c29cb1 MH |
379 | /* Check link security requirement */ |
380 | int hci_conn_check_link_mode(struct hci_conn *conn) | |
381 | { | |
382 | BT_DBG("conn %p", conn); | |
383 | ||
384 | if (conn->ssp_mode > 0 && conn->hdev->ssp_mode > 0 && | |
385 | !(conn->link_mode & HCI_LM_ENCRYPT)) | |
386 | return 0; | |
387 | ||
388 | return 1; | |
389 | } | |
390 | EXPORT_SYMBOL(hci_conn_check_link_mode); | |
391 | ||
1da177e4 LT |
392 | /* Authenticate remote device */ |
393 | int hci_conn_auth(struct hci_conn *conn) | |
394 | { | |
395 | BT_DBG("conn %p", conn); | |
396 | ||
40be492f MH |
397 | if (conn->ssp_mode > 0 && conn->hdev->ssp_mode > 0) { |
398 | if (!(conn->auth_type & 0x01)) { | |
09ab6f4c | 399 | conn->auth_type |= 0x01; |
40be492f MH |
400 | conn->link_mode &= ~HCI_LM_AUTH; |
401 | } | |
402 | } | |
403 | ||
1da177e4 LT |
404 | if (conn->link_mode & HCI_LM_AUTH) |
405 | return 1; | |
406 | ||
407 | if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->pend)) { | |
408 | struct hci_cp_auth_requested cp; | |
aca3192c | 409 | cp.handle = cpu_to_le16(conn->handle); |
40be492f MH |
410 | hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED, |
411 | sizeof(cp), &cp); | |
1da177e4 LT |
412 | } |
413 | return 0; | |
414 | } | |
415 | EXPORT_SYMBOL(hci_conn_auth); | |
416 | ||
417 | /* Enable encryption */ | |
418 | int hci_conn_encrypt(struct hci_conn *conn) | |
419 | { | |
420 | BT_DBG("conn %p", conn); | |
421 | ||
422 | if (conn->link_mode & HCI_LM_ENCRYPT) | |
40be492f | 423 | return hci_conn_auth(conn); |
1da177e4 LT |
424 | |
425 | if (test_and_set_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend)) | |
426 | return 0; | |
427 | ||
428 | if (hci_conn_auth(conn)) { | |
429 | struct hci_cp_set_conn_encrypt cp; | |
aca3192c | 430 | cp.handle = cpu_to_le16(conn->handle); |
8e87d142 | 431 | cp.encrypt = 1; |
40be492f MH |
432 | hci_send_cmd(conn->hdev, HCI_OP_SET_CONN_ENCRYPT, |
433 | sizeof(cp), &cp); | |
1da177e4 LT |
434 | } |
435 | return 0; | |
436 | } | |
437 | EXPORT_SYMBOL(hci_conn_encrypt); | |
438 | ||
439 | /* Change link key */ | |
440 | int hci_conn_change_link_key(struct hci_conn *conn) | |
441 | { | |
442 | BT_DBG("conn %p", conn); | |
443 | ||
444 | if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->pend)) { | |
445 | struct hci_cp_change_conn_link_key cp; | |
aca3192c | 446 | cp.handle = cpu_to_le16(conn->handle); |
40be492f MH |
447 | hci_send_cmd(conn->hdev, HCI_OP_CHANGE_CONN_LINK_KEY, |
448 | sizeof(cp), &cp); | |
1da177e4 LT |
449 | } |
450 | return 0; | |
451 | } | |
452 | EXPORT_SYMBOL(hci_conn_change_link_key); | |
453 | ||
454 | /* Switch role */ | |
455 | int hci_conn_switch_role(struct hci_conn *conn, uint8_t role) | |
456 | { | |
457 | BT_DBG("conn %p", conn); | |
458 | ||
459 | if (!role && conn->link_mode & HCI_LM_MASTER) | |
460 | return 1; | |
461 | ||
462 | if (!test_and_set_bit(HCI_CONN_RSWITCH_PEND, &conn->pend)) { | |
463 | struct hci_cp_switch_role cp; | |
464 | bacpy(&cp.bdaddr, &conn->dst); | |
465 | cp.role = role; | |
a9de9248 | 466 | hci_send_cmd(conn->hdev, HCI_OP_SWITCH_ROLE, sizeof(cp), &cp); |
1da177e4 LT |
467 | } |
468 | return 0; | |
469 | } | |
470 | EXPORT_SYMBOL(hci_conn_switch_role); | |
471 | ||
04837f64 MH |
472 | /* Enter active mode */ |
473 | void hci_conn_enter_active_mode(struct hci_conn *conn) | |
474 | { | |
475 | struct hci_dev *hdev = conn->hdev; | |
476 | ||
477 | BT_DBG("conn %p mode %d", conn, conn->mode); | |
478 | ||
479 | if (test_bit(HCI_RAW, &hdev->flags)) | |
480 | return; | |
481 | ||
482 | if (conn->mode != HCI_CM_SNIFF || !conn->power_save) | |
483 | goto timer; | |
484 | ||
485 | if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->pend)) { | |
486 | struct hci_cp_exit_sniff_mode cp; | |
aca3192c | 487 | cp.handle = cpu_to_le16(conn->handle); |
a9de9248 | 488 | hci_send_cmd(hdev, HCI_OP_EXIT_SNIFF_MODE, sizeof(cp), &cp); |
04837f64 MH |
489 | } |
490 | ||
491 | timer: | |
492 | if (hdev->idle_timeout > 0) | |
493 | mod_timer(&conn->idle_timer, | |
494 | jiffies + msecs_to_jiffies(hdev->idle_timeout)); | |
495 | } | |
496 | ||
497 | /* Enter sniff mode */ | |
498 | void hci_conn_enter_sniff_mode(struct hci_conn *conn) | |
499 | { | |
500 | struct hci_dev *hdev = conn->hdev; | |
501 | ||
502 | BT_DBG("conn %p mode %d", conn, conn->mode); | |
503 | ||
504 | if (test_bit(HCI_RAW, &hdev->flags)) | |
505 | return; | |
506 | ||
507 | if (!lmp_sniff_capable(hdev) || !lmp_sniff_capable(conn)) | |
508 | return; | |
509 | ||
510 | if (conn->mode != HCI_CM_ACTIVE || !(conn->link_policy & HCI_LP_SNIFF)) | |
511 | return; | |
512 | ||
513 | if (lmp_sniffsubr_capable(hdev) && lmp_sniffsubr_capable(conn)) { | |
514 | struct hci_cp_sniff_subrate cp; | |
aca3192c YH |
515 | cp.handle = cpu_to_le16(conn->handle); |
516 | cp.max_latency = cpu_to_le16(0); | |
517 | cp.min_remote_timeout = cpu_to_le16(0); | |
518 | cp.min_local_timeout = cpu_to_le16(0); | |
a9de9248 | 519 | hci_send_cmd(hdev, HCI_OP_SNIFF_SUBRATE, sizeof(cp), &cp); |
04837f64 MH |
520 | } |
521 | ||
522 | if (!test_and_set_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->pend)) { | |
523 | struct hci_cp_sniff_mode cp; | |
aca3192c YH |
524 | cp.handle = cpu_to_le16(conn->handle); |
525 | cp.max_interval = cpu_to_le16(hdev->sniff_max_interval); | |
526 | cp.min_interval = cpu_to_le16(hdev->sniff_min_interval); | |
527 | cp.attempt = cpu_to_le16(4); | |
528 | cp.timeout = cpu_to_le16(1); | |
a9de9248 | 529 | hci_send_cmd(hdev, HCI_OP_SNIFF_MODE, sizeof(cp), &cp); |
04837f64 MH |
530 | } |
531 | } | |
532 | ||
1da177e4 LT |
533 | /* Drop all connection on the device */ |
534 | void hci_conn_hash_flush(struct hci_dev *hdev) | |
535 | { | |
536 | struct hci_conn_hash *h = &hdev->conn_hash; | |
537 | struct list_head *p; | |
538 | ||
539 | BT_DBG("hdev %s", hdev->name); | |
540 | ||
541 | p = h->list.next; | |
542 | while (p != &h->list) { | |
543 | struct hci_conn *c; | |
544 | ||
545 | c = list_entry(p, struct hci_conn, list); | |
546 | p = p->next; | |
547 | ||
548 | c->state = BT_CLOSED; | |
549 | ||
7d0db0a3 MH |
550 | hci_conn_del_sysfs(c); |
551 | ||
1da177e4 LT |
552 | hci_proto_disconn_ind(c, 0x16); |
553 | hci_conn_del(c); | |
554 | } | |
555 | } | |
556 | ||
a9de9248 MH |
557 | /* Check pending connect attempts */ |
558 | void hci_conn_check_pending(struct hci_dev *hdev) | |
559 | { | |
560 | struct hci_conn *conn; | |
561 | ||
562 | BT_DBG("hdev %s", hdev->name); | |
563 | ||
564 | hci_dev_lock(hdev); | |
565 | ||
566 | conn = hci_conn_hash_lookup_state(hdev, ACL_LINK, BT_CONNECT2); | |
567 | if (conn) | |
568 | hci_acl_connect(conn); | |
569 | ||
570 | hci_dev_unlock(hdev); | |
571 | } | |
572 | ||
1da177e4 LT |
573 | int hci_get_conn_list(void __user *arg) |
574 | { | |
575 | struct hci_conn_list_req req, *cl; | |
576 | struct hci_conn_info *ci; | |
577 | struct hci_dev *hdev; | |
578 | struct list_head *p; | |
579 | int n = 0, size, err; | |
580 | ||
581 | if (copy_from_user(&req, arg, sizeof(req))) | |
582 | return -EFAULT; | |
583 | ||
584 | if (!req.conn_num || req.conn_num > (PAGE_SIZE * 2) / sizeof(*ci)) | |
585 | return -EINVAL; | |
586 | ||
587 | size = sizeof(req) + req.conn_num * sizeof(*ci); | |
588 | ||
12fe2c58 | 589 | if (!(cl = kmalloc(size, GFP_KERNEL))) |
1da177e4 LT |
590 | return -ENOMEM; |
591 | ||
592 | if (!(hdev = hci_dev_get(req.dev_id))) { | |
593 | kfree(cl); | |
594 | return -ENODEV; | |
595 | } | |
596 | ||
597 | ci = cl->conn_info; | |
598 | ||
599 | hci_dev_lock_bh(hdev); | |
600 | list_for_each(p, &hdev->conn_hash.list) { | |
601 | register struct hci_conn *c; | |
602 | c = list_entry(p, struct hci_conn, list); | |
603 | ||
604 | bacpy(&(ci + n)->bdaddr, &c->dst); | |
605 | (ci + n)->handle = c->handle; | |
606 | (ci + n)->type = c->type; | |
607 | (ci + n)->out = c->out; | |
608 | (ci + n)->state = c->state; | |
609 | (ci + n)->link_mode = c->link_mode; | |
610 | if (++n >= req.conn_num) | |
611 | break; | |
612 | } | |
613 | hci_dev_unlock_bh(hdev); | |
614 | ||
615 | cl->dev_id = hdev->id; | |
616 | cl->conn_num = n; | |
617 | size = sizeof(req) + n * sizeof(*ci); | |
618 | ||
619 | hci_dev_put(hdev); | |
620 | ||
621 | err = copy_to_user(arg, cl, size); | |
622 | kfree(cl); | |
623 | ||
624 | return err ? -EFAULT : 0; | |
625 | } | |
626 | ||
627 | int hci_get_conn_info(struct hci_dev *hdev, void __user *arg) | |
628 | { | |
629 | struct hci_conn_info_req req; | |
630 | struct hci_conn_info ci; | |
631 | struct hci_conn *conn; | |
632 | char __user *ptr = arg + sizeof(req); | |
633 | ||
634 | if (copy_from_user(&req, arg, sizeof(req))) | |
635 | return -EFAULT; | |
636 | ||
637 | hci_dev_lock_bh(hdev); | |
638 | conn = hci_conn_hash_lookup_ba(hdev, req.type, &req.bdaddr); | |
639 | if (conn) { | |
640 | bacpy(&ci.bdaddr, &conn->dst); | |
641 | ci.handle = conn->handle; | |
642 | ci.type = conn->type; | |
643 | ci.out = conn->out; | |
644 | ci.state = conn->state; | |
645 | ci.link_mode = conn->link_mode; | |
646 | } | |
647 | hci_dev_unlock_bh(hdev); | |
648 | ||
649 | if (!conn) | |
650 | return -ENOENT; | |
651 | ||
652 | return copy_to_user(ptr, &ci, sizeof(ci)) ? -EFAULT : 0; | |
653 | } | |
40be492f MH |
654 | |
655 | int hci_get_auth_info(struct hci_dev *hdev, void __user *arg) | |
656 | { | |
657 | struct hci_auth_info_req req; | |
658 | struct hci_conn *conn; | |
659 | ||
660 | if (copy_from_user(&req, arg, sizeof(req))) | |
661 | return -EFAULT; | |
662 | ||
663 | hci_dev_lock_bh(hdev); | |
664 | conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &req.bdaddr); | |
665 | if (conn) | |
666 | req.type = conn->auth_type; | |
667 | hci_dev_unlock_bh(hdev); | |
668 | ||
669 | if (!conn) | |
670 | return -ENOENT; | |
671 | ||
672 | return copy_to_user(arg, &req, sizeof(req)) ? -EFAULT : 0; | |
673 | } |