1 /******************************************************************************
2 *
3 * Copyright (C) 2009-2012 Broadcom Corporation
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 ******************************************************************************/
18
19 /******************************************************************************
20 *
21 * this file contains functions relating to BLE management.
22 *
23 ******************************************************************************/
24
25 #include <string.h>
26 #include "bt_target.h"
27 #include "l2cdefs.h"
28 #include "l2c_int.h"
29 #include "btu.h"
30 #include "btm_int.h"
31 #include "hcimsgs.h"
32
33 #if (BLE_INCLUDED == TRUE)
34
35 /*******************************************************************************
36 **
37 ** Function L2CA_CancelBleConnectReq
38 **
39 ** Description Cancel a pending connection attempt to a BLE device.
40 **
41 ** Parameters: BD Address of remote
42 **
43 ** Return value: TRUE if connection was cancelled
44 **
45 *******************************************************************************/
L2CA_CancelBleConnectReq(BD_ADDR rem_bda)46 BOOLEAN L2CA_CancelBleConnectReq (BD_ADDR rem_bda)
47 {
48 tL2C_LCB *p_lcb;
49
50 /* There can be only one BLE connection request outstanding at a time */
51 if (btm_ble_get_conn_st() == BLE_CONN_IDLE)
52 {
53 L2CAP_TRACE_WARNING0 ("L2CA_CancelBleConnectReq - no connection pending");
54 return(FALSE);
55 }
56
57 if (memcmp (rem_bda, l2cb.ble_connecting_bda, BD_ADDR_LEN))
58 {
59 L2CAP_TRACE_WARNING4 ("L2CA_CancelBleConnectReq - different BDA Connecting: %08x%04x Cancel: %08x%04x",
60 (l2cb.ble_connecting_bda[0]<<24)+(l2cb.ble_connecting_bda[1]<<16)+(l2cb.ble_connecting_bda[2]<<8)+l2cb.ble_connecting_bda[3],
61 (l2cb.ble_connecting_bda[4]<<8)+l2cb.ble_connecting_bda[5],
62 (rem_bda[0]<<24)+(rem_bda[1]<<16)+(rem_bda[2]<<8)+rem_bda[3], (rem_bda[4]<<8)+rem_bda[5]);
63
64 return(FALSE);
65 }
66
67 if (btsnd_hcic_ble_create_conn_cancel())
68 {
69
70 if ((p_lcb = l2cu_find_lcb_by_bd_addr (rem_bda)) != NULL)
71 {
72 p_lcb->disc_reason = L2CAP_CONN_CANCEL;
73 l2cu_release_lcb (p_lcb);
74 }
75 /* update state to be cancel, wait for connection cancel complete */
76 btm_ble_set_conn_st (BLE_CONN_CANCEL);
77
78 return(TRUE);
79 }
80 else
81 return(FALSE);
82 }
83
84 /*******************************************************************************
85 **
86 ** Function L2CA_InternalBleConnUpdate
87 **
88 ** Description update BLE connection based on status
89 **
90 ** Parameters: lcb
91 **
92 ** Return value: none
93 **
94 *******************************************************************************/
L2CA_InternalBleConnUpdate(tL2C_LCB * p_lcb)95 static void L2CA_InternalBleConnUpdate (tL2C_LCB *p_lcb)
96 {
97 if (p_lcb->upd_status & L2C_BLE_UPDATE_PENDING) return;
98
99 if (p_lcb->upd_status & L2C_BLE_CONN_UPDATE_DISABLE)
100 {
101 /* application requests to disable parameters update.
102 If parameters are already updated, lets set them
103 up to what has been requested during connection establishement */
104 if (p_lcb->upd_status & L2C_BLE_NOT_DEFAULT_PARAM)
105 {
106 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_or_alloc_dev(p_lcb->remote_bd_addr);
107
108 btsnd_hcic_ble_upd_ll_conn_params(p_lcb->handle,
109 (UINT16)((p_dev_rec->conn_params.min_conn_int != BTM_BLE_CONN_PARAM_UNDEF) ?
110 p_dev_rec->conn_params.min_conn_int : BTM_BLE_CONN_INT_MIN_DEF),
111 (UINT16)((p_dev_rec->conn_params.max_conn_int != BTM_BLE_CONN_PARAM_UNDEF) ?
112 p_dev_rec->conn_params.max_conn_int : BTM_BLE_CONN_INT_MAX_DEF),
113 (UINT16)((p_dev_rec->conn_params.slave_latency != BTM_BLE_CONN_PARAM_UNDEF) ?
114 p_dev_rec->conn_params.slave_latency : BTM_BLE_CONN_SLAVE_LATENCY_DEF),
115 (UINT16)((p_dev_rec->conn_params.supervision_tout != BTM_BLE_CONN_PARAM_UNDEF) ?
116 p_dev_rec->conn_params.supervision_tout : BTM_BLE_CONN_TIMEOUT_DEF),
117 0, 0);
118 p_lcb->upd_status &= ~L2C_BLE_NOT_DEFAULT_PARAM;
119 p_lcb->upd_status |= (L2C_BLE_UPDATE_PENDING | L2C_BLE_NEW_CONN_PARAM);
120 }
121 }
122 else
123 {
124 /* application allows to do update, if we were delaying one do it now */
125 if (p_lcb->upd_status & L2C_BLE_NEW_CONN_PARAM)
126 {
127 btsnd_hcic_ble_upd_ll_conn_params(p_lcb->handle, p_lcb->min_interval,
128 p_lcb->max_interval, p_lcb->latency, p_lcb->timeout, 0, 0);
129 p_lcb->upd_status &= ~L2C_BLE_NEW_CONN_PARAM;
130 p_lcb->upd_status |= (L2C_BLE_UPDATE_PENDING | L2C_BLE_NOT_DEFAULT_PARAM);
131 }
132 }
133 }
134
135 /*******************************************************************************
136 **
137 ** Function L2CA_UpdateBleConnParams
138 **
139 ** Description Update BLE connection parameters.
140 **
141 ** Parameters: BD Address of remote
142 **
143 ** Return value: TRUE if update started
144 **
145 *******************************************************************************/
L2CA_UpdateBleConnParams(BD_ADDR rem_bda,UINT16 min_int,UINT16 max_int,UINT16 latency,UINT16 timeout)146 BOOLEAN L2CA_UpdateBleConnParams (BD_ADDR rem_bda, UINT16 min_int, UINT16 max_int, UINT16 latency, UINT16 timeout)
147 {
148 tL2C_LCB *p_lcb;
149
150 /* See if we have a link control block for the remote device */
151 p_lcb = l2cu_find_lcb_by_bd_addr (rem_bda);
152
153 /* If we don't have one, create one and accept the connection. */
154 if (!p_lcb)
155 {
156 L2CAP_TRACE_WARNING2 ("L2CA_UpdateBleConnParams - unknown BD_ADDR %08x%04x",
157 (rem_bda[0]<<24)+(rem_bda[1]<<16)+(rem_bda[2]<<8)+rem_bda[3], (rem_bda[4]<<8)+rem_bda[5]);
158 return(FALSE);
159 }
160
161 if (!p_lcb->is_ble_link)
162 {
163 L2CAP_TRACE_WARNING2 ("L2CA_UpdateBleConnParams - BD_ADDR %08x%04x not LE",
164 (rem_bda[0]<<24)+(rem_bda[1]<<16)+(rem_bda[2]<<8)+rem_bda[3], (rem_bda[4]<<8)+rem_bda[5]);
165 return(FALSE);
166 }
167
168 if (p_lcb->link_role == HCI_ROLE_MASTER)
169 {
170 p_lcb->min_interval = min_int;
171 p_lcb->max_interval = max_int;
172 p_lcb->latency = latency;
173 p_lcb->timeout = timeout;
174 p_lcb->upd_status |= L2C_BLE_NEW_CONN_PARAM;
175 L2CA_InternalBleConnUpdate(p_lcb);
176 }
177 else
178 l2cu_send_peer_ble_par_req (p_lcb, min_int, max_int, latency, timeout);
179
180 return(TRUE);
181 }
182
183
184 /*******************************************************************************
185 **
186 ** Function L2CA_EnableUpdateBleConnParams
187 **
188 ** Description Enable or disable update based on the request from the peer
189 **
190 ** Parameters: BD Address of remote
191 **
192 ** Return value: TRUE if update started
193 **
194 *******************************************************************************/
L2CA_EnableUpdateBleConnParams(BD_ADDR rem_bda,BOOLEAN enable)195 BOOLEAN L2CA_EnableUpdateBleConnParams (BD_ADDR rem_bda, BOOLEAN enable)
196 {
197 tL2C_LCB *p_lcb;
198
199 /* See if we have a link control block for the remote device */
200 p_lcb = l2cu_find_lcb_by_bd_addr (rem_bda);
201
202 /* If we don't have one, create one and accept the connection. */
203 if (!p_lcb)
204 {
205 L2CAP_TRACE_WARNING2 ("L2CA_EnableUpdateBleConnParams - unknown BD_ADDR %08x%04x",
206 (rem_bda[0]<<24)+(rem_bda[1]<<16)+(rem_bda[2]<<8)+rem_bda[3], (rem_bda[4]<<8)+rem_bda[5]);
207 return (FALSE);
208 }
209
210 L2CAP_TRACE_API4 ("L2CA_EnableUpdateBleConnParams - BD_ADDR %08x%04x enable %d upd state %d",
211 (rem_bda[0]<<24)+(rem_bda[1]<<16)+(rem_bda[2]<<8)+rem_bda[3], (rem_bda[4]<<8)+rem_bda[5],
212 enable, p_lcb->upd_status);
213
214 if (!p_lcb->is_ble_link || (p_lcb->link_role != HCI_ROLE_MASTER))
215 {
216 L2CAP_TRACE_WARNING3 ("L2CA_EnableUpdateBleConnParams - BD_ADDR %08x%04x not LE or not master %d",
217 (rem_bda[0]<<24)+(rem_bda[1]<<16)+(rem_bda[2]<<8)+rem_bda[3], (rem_bda[4]<<8)+rem_bda[5], p_lcb->link_role);
218 return (FALSE);
219 }
220
221 if (enable)
222 {
223 p_lcb->upd_status &= ~L2C_BLE_CONN_UPDATE_DISABLE;
224 }
225 else
226 {
227 p_lcb->upd_status |= L2C_BLE_CONN_UPDATE_DISABLE;
228 }
229
230 L2CA_InternalBleConnUpdate(p_lcb);
231
232 return (TRUE);
233 }
234
235 /*******************************************************************************
236 **
237 ** Function L2CA_HandleConnUpdateEvent
238 **
239 ** Description This function enables the connection update request from remote
240 ** after a successful connection update response is received.
241 **
242 ** Returns void
243 **
244 *******************************************************************************/
L2CA_HandleConnUpdateEvent(UINT16 handle,UINT8 status)245 void L2CA_HandleConnUpdateEvent (UINT16 handle, UINT8 status)
246 {
247 tL2C_LCB *p_lcb;
248
249 L2CAP_TRACE_DEBUG0("L2CA_HandleConnUpdateEvent");
250
251 /* See if we have a link control block for the remote device */
252 p_lcb = l2cu_find_lcb_by_handle(handle);
253 if (!p_lcb)
254 {
255 L2CAP_TRACE_WARNING1("L2CA_EnableUpdateBleConnParams: Invalid handle: %d", handle);
256 return;
257 }
258
259 p_lcb->upd_status &= ~L2C_BLE_UPDATE_PENDING;
260
261 if (status != HCI_SUCCESS)
262 {
263 L2CAP_TRACE_WARNING1("L2CA_EnableUpdateBleConnParams: Error status: %d", status);
264 }
265
266 L2CA_InternalBleConnUpdate(p_lcb);
267
268 L2CAP_TRACE_DEBUG1("L2CA_HandleConnUpdateEvent: upd_status=%d", p_lcb->upd_status);
269 }
270
271 /*******************************************************************************
272 **
273 ** Function L2CA_GetBleConnRole
274 **
275 ** Description This function returns the connection role.
276 **
277 ** Returns link role.
278 **
279 *******************************************************************************/
L2CA_GetBleConnRole(BD_ADDR bd_addr)280 UINT8 L2CA_GetBleConnRole (BD_ADDR bd_addr)
281 {
282 UINT8 role = HCI_ROLE_UNKNOWN;
283
284 tL2C_LCB *p_lcb;
285
286 if ((p_lcb = l2cu_find_lcb_by_bd_addr (bd_addr)) != NULL)
287 role = p_lcb->link_role;
288
289 return role;
290 }
291 /*******************************************************************************
292 **
293 ** Function L2CA_GetDisconnectReason
294 **
295 ** Description This function returns the disconnect reason code.
296 **
297 ** Returns disconnect reason
298 **
299 *******************************************************************************/
L2CA_GetDisconnectReason(BD_ADDR remote_bda)300 UINT16 L2CA_GetDisconnectReason (BD_ADDR remote_bda)
301 {
302 tL2C_LCB *p_lcb;
303 UINT16 reason = 0;
304
305 if ((p_lcb = l2cu_find_lcb_by_bd_addr (remote_bda)) != NULL)
306 reason = p_lcb->disc_reason;
307
308 L2CAP_TRACE_DEBUG1 ("L2CA_GetDisconnectReason=%d ",reason);
309
310 return reason;
311 }
312
313 /*******************************************************************************
314 **
315 ** Function l2cble_scanner_conn_comp
316 **
317 ** Description This function is called when an HCI Connection Complete
318 ** event is received while we are a scanner (so we are master).
319 **
320 ** Returns void
321 **
322 *******************************************************************************/
l2cble_scanner_conn_comp(UINT16 handle,BD_ADDR bda,tBLE_ADDR_TYPE type,UINT16 conn_interval,UINT16 conn_latency,UINT16 conn_timeout)323 void l2cble_scanner_conn_comp (UINT16 handle, BD_ADDR bda, tBLE_ADDR_TYPE type,
324 UINT16 conn_interval, UINT16 conn_latency, UINT16 conn_timeout)
325 {
326 tL2C_LCB *p_lcb;
327 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_or_alloc_dev (bda);
328
329 L2CAP_TRACE_DEBUG5 ("l2cble_scanner_conn_comp: HANDLE=%d addr_type=%d conn_interval=%d slave_latency=%d supervision_tout=%d",
330 handle, type, conn_interval, conn_latency, conn_timeout);
331
332 l2cb.is_ble_connecting = FALSE;
333
334 /* See if we have a link control block for the remote device */
335 p_lcb = l2cu_find_lcb_by_bd_addr (bda);
336
337 /* If we don't have one, create one. this is auto connection complete. */
338 if (!p_lcb)
339 {
340 p_lcb = l2cu_allocate_lcb (bda, FALSE);
341 if (!p_lcb)
342 {
343 btm_sec_disconnect (handle, HCI_ERR_NO_CONNECTION);
344 L2CAP_TRACE_ERROR0 ("l2cble_scanner_conn_comp - failed to allocate LCB");
345 return;
346 }
347 else
348 {
349 if (!l2cu_initialize_fixed_ccb (p_lcb, L2CAP_ATT_CID, &l2cb.fixed_reg[L2CAP_ATT_CID - L2CAP_FIRST_FIXED_CHNL].fixed_chnl_opts))
350 {
351 btm_sec_disconnect (handle, HCI_ERR_NO_CONNECTION);
352 L2CAP_TRACE_WARNING0 ("l2cble_scanner_conn_comp - LCB but no CCB");
353 return ;
354 }
355 }
356 }
357 else if (p_lcb->link_state != LST_CONNECTING)
358 {
359 L2CAP_TRACE_ERROR1 ("L2CAP got BLE scanner conn_comp in bad state: %d", p_lcb->link_state);
360 return;
361 }
362 btu_stop_timer(&p_lcb->timer_entry);
363
364 /* Save the handle */
365 p_lcb->handle = handle;
366
367 /* Connected OK. Change state to connected, we were scanning so we are master */
368 p_lcb->link_state = LST_CONNECTED;
369 p_lcb->link_role = HCI_ROLE_MASTER;
370 p_lcb->is_ble_link = TRUE;
371
372 /* If there are any preferred connection parameters, set them now */
373 if ( (p_dev_rec->conn_params.min_conn_int >= BTM_BLE_CONN_INT_MIN ) &&
374 (p_dev_rec->conn_params.min_conn_int <= BTM_BLE_CONN_INT_MAX ) &&
375 (p_dev_rec->conn_params.max_conn_int >= BTM_BLE_CONN_INT_MIN ) &&
376 (p_dev_rec->conn_params.max_conn_int <= BTM_BLE_CONN_INT_MAX ) &&
377 (p_dev_rec->conn_params.slave_latency <= BTM_BLE_CONN_LATENCY_MAX ) &&
378 (p_dev_rec->conn_params.supervision_tout >= BTM_BLE_CONN_SUP_TOUT_MIN) &&
379 (p_dev_rec->conn_params.supervision_tout <= BTM_BLE_CONN_SUP_TOUT_MAX) &&
380 ((conn_interval < p_dev_rec->conn_params.min_conn_int &&
381 p_dev_rec->conn_params.min_conn_int != BTM_BLE_CONN_PARAM_UNDEF) ||
382 (conn_interval > p_dev_rec->conn_params.max_conn_int) ||
383 (conn_latency > p_dev_rec->conn_params.slave_latency) ||
384 (conn_timeout > p_dev_rec->conn_params.supervision_tout)))
385 {
386 L2CAP_TRACE_ERROR5 ("upd_ll_conn_params: HANDLE=%d min_conn_int=%d max_conn_int=%d slave_latency=%d supervision_tout=%d",
387 handle, p_dev_rec->conn_params.min_conn_int, p_dev_rec->conn_params.max_conn_int,
388 p_dev_rec->conn_params.slave_latency, p_dev_rec->conn_params.supervision_tout);
389
390 btsnd_hcic_ble_upd_ll_conn_params (handle,
391 p_dev_rec->conn_params.min_conn_int,
392 p_dev_rec->conn_params.max_conn_int,
393 p_dev_rec->conn_params.slave_latency,
394 p_dev_rec->conn_params.supervision_tout,
395 0, 0);
396 p_lcb->upd_status |= L2C_BLE_UPDATE_PENDING;
397 }
398
399 /* Tell BTM Acl management about the link */
400 btm_acl_created (bda, NULL, p_dev_rec->sec_bd_name, handle, p_lcb->link_role, TRUE);
401
402 if (p_lcb->p_echo_rsp_cb)
403 {
404 L2CAP_TRACE_ERROR0 ("l2cu_send_peer_echo_req");
405 l2cu_send_peer_echo_req (p_lcb, NULL, 0);
406 }
407
408 p_lcb->peer_chnl_mask[0] = L2CAP_FIXED_CHNL_ATT_BIT | L2CAP_FIXED_CHNL_BLE_SIG_BIT | L2CAP_FIXED_CHNL_SMP_BIT;
409
410 l2cu_process_fixed_chnl_resp (p_lcb);
411 }
412
413
414 /*******************************************************************************
415 **
416 ** Function l2cble_advertiser_conn_comp
417 **
418 ** Description This function is called when an HCI Connection Complete
419 ** event is received while we are an advertiser (so we are slave).
420 **
421 ** Returns void
422 **
423 *******************************************************************************/
l2cble_advertiser_conn_comp(UINT16 handle,BD_ADDR bda,tBLE_ADDR_TYPE type,UINT16 conn_interval,UINT16 conn_latency,UINT16 conn_timeout)424 void l2cble_advertiser_conn_comp (UINT16 handle, BD_ADDR bda, tBLE_ADDR_TYPE type,
425 UINT16 conn_interval, UINT16 conn_latency, UINT16 conn_timeout)
426 {
427 tL2C_LCB *p_lcb;
428 tBTM_SEC_DEV_REC *p_dev_rec;
429
430 /* See if we have a link control block for the remote device */
431 p_lcb = l2cu_find_lcb_by_bd_addr (bda);
432
433 /* If we don't have one, create one and accept the connection. */
434 if (!p_lcb)
435 {
436 p_lcb = l2cu_allocate_lcb (bda, FALSE);
437 if (!p_lcb)
438 {
439 btm_sec_disconnect (handle, HCI_ERR_NO_CONNECTION);
440 L2CAP_TRACE_ERROR0 ("l2cble_advertiser_conn_comp - failed to allocate LCB");
441 return;
442 }
443 else
444 {
445 if (!l2cu_initialize_fixed_ccb (p_lcb, L2CAP_ATT_CID, &l2cb.fixed_reg[L2CAP_ATT_CID - L2CAP_FIRST_FIXED_CHNL].fixed_chnl_opts))
446 {
447 btm_sec_disconnect (handle, HCI_ERR_NO_CONNECTION);
448 L2CAP_TRACE_WARNING0 ("l2cble_scanner_conn_comp - LCB but no CCB");
449 return ;
450 }
451 }
452 }
453
454 /* Save the handle */
455 p_lcb->handle = handle;
456
457 /* Connected OK. Change state to connected, we were advertising, so we are slave */
458 p_lcb->link_state = LST_CONNECTED;
459 p_lcb->link_role = HCI_ROLE_SLAVE;
460 p_lcb->is_ble_link = TRUE;
461
462 /* Tell BTM Acl management about the link */
463 p_dev_rec = btm_find_or_alloc_dev (bda);
464
465 btm_acl_created (bda, NULL, p_dev_rec->sec_bd_name, handle, p_lcb->link_role, TRUE);
466
467 p_lcb->peer_chnl_mask[0] = L2CAP_FIXED_CHNL_ATT_BIT | L2CAP_FIXED_CHNL_BLE_SIG_BIT | L2CAP_FIXED_CHNL_SMP_BIT;
468
469 l2cu_process_fixed_chnl_resp (p_lcb);
470 }
471
472 /*******************************************************************************
473 **
474 ** Function l2cble_conn_comp
475 **
476 ** Description This function is called when an HCI Connection Complete
477 ** event is received.
478 **
479 ** Returns void
480 **
481 *******************************************************************************/
l2cble_conn_comp(UINT16 handle,UINT8 role,BD_ADDR bda,tBLE_ADDR_TYPE type,UINT16 conn_interval,UINT16 conn_latency,UINT16 conn_timeout)482 void l2cble_conn_comp(UINT16 handle, UINT8 role, BD_ADDR bda, tBLE_ADDR_TYPE type,
483 UINT16 conn_interval, UINT16 conn_latency, UINT16 conn_timeout)
484 {
485 if (role == HCI_ROLE_MASTER)
486 {
487 l2cble_scanner_conn_comp(handle, bda, type, conn_interval, conn_latency, conn_timeout);
488 }
489 else
490 {
491 l2cble_advertiser_conn_comp(handle, bda, type, conn_interval, conn_latency, conn_timeout);
492 }
493 }
494 /*******************************************************************************
495 **
496 ** Function l2cble_process_sig_cmd
497 **
498 ** Description This function is called when a signalling packet is received
499 ** on the BLE signalling CID
500 **
501 ** Returns void
502 **
503 *******************************************************************************/
l2cble_process_sig_cmd(tL2C_LCB * p_lcb,UINT8 * p,UINT16 pkt_len)504 void l2cble_process_sig_cmd (tL2C_LCB *p_lcb, UINT8 *p, UINT16 pkt_len)
505 {
506 UINT8 *p_pkt_end;
507 UINT8 cmd_code, id;
508 UINT16 cmd_len, rej_reason;
509 UINT16 result;
510 UINT16 min_interval, max_interval, latency, timeout;
511
512 p_pkt_end = p + pkt_len;
513
514 STREAM_TO_UINT8 (cmd_code, p);
515 STREAM_TO_UINT8 (id, p);
516 STREAM_TO_UINT16 (cmd_len, p);
517
518 /* Check command length does not exceed packet length */
519 if ((p + cmd_len) > p_pkt_end)
520 {
521 L2CAP_TRACE_WARNING3 ("L2CAP - LE - format error, pkt_len: %d cmd_len: %d code: %d", pkt_len, cmd_len, cmd_code);
522 return;
523 }
524
525 switch (cmd_code)
526 {
527 case L2CAP_CMD_REJECT:
528 case L2CAP_CMD_ECHO_RSP:
529 case L2CAP_CMD_INFO_RSP:
530 STREAM_TO_UINT16 (rej_reason, p);
531 break;
532 case L2CAP_CMD_ECHO_REQ:
533 case L2CAP_CMD_INFO_REQ:
534 l2cu_send_peer_cmd_reject (p_lcb, L2CAP_CMD_REJ_NOT_UNDERSTOOD, id, 0, 0);
535 break;
536
537 case L2CAP_CMD_BLE_UPDATE_REQ:
538 STREAM_TO_UINT16 (min_interval, p); /* 0x0006 - 0x0C80 */
539 STREAM_TO_UINT16 (max_interval, p); /* 0x0006 - 0x0C80 */
540 STREAM_TO_UINT16 (latency, p); /* 0x0000 - 0x03E8 */
541 STREAM_TO_UINT16 (timeout, p); /* 0x000A - 0x0C80 */
542 /* If we are a master, the slave wants to update the parameters */
543 if (p_lcb->link_role == HCI_ROLE_MASTER)
544 {
545 if (min_interval < BTM_BLE_CONN_INT_MIN || min_interval > BTM_BLE_CONN_INT_MAX ||
546 max_interval < BTM_BLE_CONN_INT_MIN || max_interval > BTM_BLE_CONN_INT_MAX ||
547 latency > BTM_BLE_CONN_LATENCY_MAX ||
548 /*(timeout >= max_interval && latency > (timeout * 10/(max_interval * 1.25) - 1)) ||*/
549 timeout < BTM_BLE_CONN_SUP_TOUT_MIN || timeout > BTM_BLE_CONN_SUP_TOUT_MAX ||
550 max_interval < min_interval)
551 {
552 l2cu_send_peer_ble_par_rsp (p_lcb, L2CAP_CFG_UNACCEPTABLE_PARAMS, id);
553 }
554 else
555 {
556
557 l2cu_send_peer_ble_par_rsp (p_lcb, L2CAP_CFG_OK, id);
558
559 p_lcb->min_interval = min_interval;
560 p_lcb->max_interval = max_interval;
561 p_lcb->latency = latency;
562 p_lcb->timeout = timeout;
563 p_lcb->upd_status |= L2C_BLE_NEW_CONN_PARAM;
564 L2CA_InternalBleConnUpdate(p_lcb);
565 }
566 }
567 else
568 l2cu_send_peer_cmd_reject (p_lcb, L2CAP_CMD_REJ_NOT_UNDERSTOOD, id, 0, 0);
569 break;
570
571 case L2CAP_CMD_BLE_UPDATE_RSP:
572 STREAM_TO_UINT16 (result, p);
573 break;
574
575 default:
576 L2CAP_TRACE_WARNING1 ("L2CAP - LE - unknown cmd code: %d", cmd_code);
577 l2cu_send_peer_cmd_reject (p_lcb, L2CAP_CMD_REJ_NOT_UNDERSTOOD, id, 0, 0);
578 return;
579 }
580 }
581
582
583 /*******************************************************************************
584 **
585 ** Function l2cble_init_direct_conn
586 **
587 ** Description This function is to initate a direct connection
588 **
589 ** Returns TRUE connection initiated, FALSE otherwise.
590 **
591 *******************************************************************************/
l2cble_init_direct_conn(tL2C_LCB * p_lcb)592 BOOLEAN l2cble_init_direct_conn (tL2C_LCB *p_lcb)
593 {
594 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_or_alloc_dev (p_lcb->remote_bd_addr);
595 tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb;
596 UINT16 scan_int, scan_win;
597 BD_ADDR init_addr;
598 UINT8 init_addr_type = BLE_ADDR_PUBLIC,
599 own_addr_type = BLE_ADDR_PUBLIC;
600
601 /* There can be only one BLE connection request outstanding at a time */
602 if (p_dev_rec == NULL)
603 {
604 BTM_TRACE_WARNING0 ("unknown device, can not initate connection");
605 return(FALSE);
606 }
607
608 scan_int = (p_cb->scan_int == BTM_BLE_CONN_PARAM_UNDEF) ? BTM_BLE_SCAN_FAST_INT : p_cb->scan_int;
609 scan_win = (p_cb->scan_win == BTM_BLE_CONN_PARAM_UNDEF) ? BTM_BLE_SCAN_FAST_WIN : p_cb->scan_win;
610
611 init_addr_type = p_lcb->ble_addr_type;
612 memcpy(init_addr, p_lcb->remote_bd_addr, BD_ADDR_LEN);
613
614 if (!btsnd_hcic_ble_create_ll_conn (scan_int,/* UINT16 scan_int */
615 scan_win, /* UINT16 scan_win */
616 FALSE, /* UINT8 white_list */
617 init_addr_type, /* UINT8 addr_type_peer */
618 init_addr, /* BD_ADDR bda_peer */
619 own_addr_type, /* UINT8 addr_type_own */
620 (UINT16) ((p_dev_rec->conn_params.min_conn_int != BTM_BLE_CONN_PARAM_UNDEF) ?
621 p_dev_rec->conn_params.min_conn_int : BTM_BLE_CONN_INT_MIN_DEF), /* conn_int_min */
622 (UINT16) ((p_dev_rec->conn_params.max_conn_int != BTM_BLE_CONN_PARAM_UNDEF) ?
623 p_dev_rec->conn_params.max_conn_int : BTM_BLE_CONN_INT_MAX_DEF), /* conn_int_max */
624 (UINT16) ((p_dev_rec->conn_params.slave_latency != BTM_BLE_CONN_PARAM_UNDEF) ?
625 p_dev_rec->conn_params.slave_latency : 0), /* UINT16 conn_latency */
626 (UINT16) ((p_dev_rec->conn_params.supervision_tout != BTM_BLE_CONN_PARAM_UNDEF) ?
627 p_dev_rec->conn_params.supervision_tout : BTM_BLE_CONN_SUP_TOUT_DEF), /* conn_timeout */
628 0, /* UINT16 min_len */
629 0)) /* UINT16 max_len */
630 {
631 l2cu_release_lcb (p_lcb);
632 L2CAP_TRACE_ERROR0("initate direct connection fail, no resources");
633 return (FALSE);
634 }
635 else
636 {
637 p_lcb->link_state = LST_CONNECTING;
638 l2cb.is_ble_connecting = TRUE;
639 memcpy (l2cb.ble_connecting_bda, p_lcb->remote_bd_addr, BD_ADDR_LEN);
640 btu_start_timer (&p_lcb->timer_entry, BTU_TTYPE_L2CAP_LINK, L2CAP_BLE_LINK_CONNECT_TOUT);
641 btm_ble_set_conn_st (BLE_DIR_CONN);
642
643 return (TRUE);
644 }
645 }
646
647 /*******************************************************************************
648 **
649 ** Function l2cble_create_conn
650 **
651 ** Description This function initiates an acl connection via HCI
652 **
653 ** Returns TRUE if successful, FALSE if connection not started.
654 **
655 *******************************************************************************/
l2cble_create_conn(tL2C_LCB * p_lcb)656 BOOLEAN l2cble_create_conn (tL2C_LCB *p_lcb)
657 {
658 tBTM_BLE_CONN_ST conn_st = btm_ble_get_conn_st();
659 BOOLEAN rt = FALSE;
660
661 /* There can be only one BLE connection request outstanding at a time */
662 if (conn_st == BLE_CONN_IDLE)
663 {
664 rt = l2cble_init_direct_conn(p_lcb);
665 }
666 else
667 {
668 L2CAP_TRACE_WARNING1 ("L2CAP - LE - cannot start new connection at conn st: %d", conn_st);
669
670 btm_ble_enqueue_direct_conn_req(p_lcb);
671
672 if (conn_st == BLE_BG_CONN)
673 btm_ble_suspend_bg_conn();
674
675 rt = TRUE;
676 }
677 return rt;
678 }
679
680 /*******************************************************************************
681 **
682 ** Function l2c_link_processs_ble_num_bufs
683 **
684 ** Description This function is called when a "controller buffer size"
685 ** event is first received from the controller. It updates
686 ** the L2CAP values.
687 **
688 ** Returns void
689 **
690 *******************************************************************************/
l2c_link_processs_ble_num_bufs(UINT16 num_lm_ble_bufs)691 void l2c_link_processs_ble_num_bufs (UINT16 num_lm_ble_bufs)
692 {
693 if (num_lm_ble_bufs == 0)
694 {
695 num_lm_ble_bufs = L2C_DEF_NUM_BLE_BUF_SHARED;
696 l2cb.num_lm_acl_bufs -= L2C_DEF_NUM_BLE_BUF_SHARED;
697 }
698
699 l2cb.num_lm_ble_bufs = l2cb.controller_le_xmit_window = num_lm_ble_bufs;
700 }
701
702 #endif /* (BLE_INCLUDED == TRUE) */
703