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 "common/bt_target.h"
27 //#include "bt_utils.h"
28 #include "stack/l2cdefs.h"
29 #include "l2c_int.h"
30 #include "stack/btu.h"
31 #include "btm_int.h"
32 #include "stack/hcimsgs.h"
33 #include "device/controller.h"
34
35 #if (BLE_INCLUDED == TRUE)
36
37 #if (BLE_50_FEATURE_SUPPORT == TRUE)
38 #define EXT_CONN_INT_DEF_1M MAX(((MAX_ACL_CONNECTIONS + 1) * 4), 12)
39 #define EXT_CONN_INT_DEF_2M MAX(((MAX_ACL_CONNECTIONS + 1) * 2), 12)
40 #define EXT_CONN_INT_DEF_CODED (320) // 306-> 362Kbps
41
42 const static tHCI_ExtConnParams ext_conn_params_1m_phy = {
43 .scan_interval = 0x40,
44 .scan_window = 0x40,
45 .conn_interval_min = EXT_CONN_INT_DEF_1M,
46 .conn_interval_max = EXT_CONN_INT_DEF_1M,
47 .conn_latency = 0,
48 .sup_timeout = 600,
49 .min_ce_len = 0,
50 .max_ce_len = 0,
51 };
52 const static tHCI_ExtConnParams ext_conn_params_2m_phy = {
53 .scan_interval = 0x40,
54 .scan_window = 0x40,
55 .conn_interval_min = EXT_CONN_INT_DEF_2M,
56 .conn_interval_max = EXT_CONN_INT_DEF_2M,
57 .conn_latency = 0,
58 .sup_timeout = 600,
59 .min_ce_len = 0,
60 .max_ce_len = 0,
61 };
62 const static tHCI_ExtConnParams ext_conn_params_coded_phy = {
63 .scan_interval = 0x40,
64 .scan_window = 0x40,
65 .conn_interval_min = EXT_CONN_INT_DEF_CODED,
66 .conn_interval_max = EXT_CONN_INT_DEF_CODED,
67 .conn_latency = 0,
68 .sup_timeout = 600,
69 .min_ce_len = 0,
70 .max_ce_len = 0,
71 };
72 #define BLE_PHY_NO_PREF 0
73 #define BLE_PHY_PREF_MASK ((1 << 2) | (1 << 1) | (1 << 0))
74
75 #endif // #if (BLE_50_FEATURE_SUPPORT == TRUE)
76
77 static BOOLEAN l2cble_start_conn_update (tL2C_LCB *p_lcb);
78 extern int64_t esp_system_get_time(void);
79
80 /*******************************************************************************
81 **
82 ** Function L2CA_CancelBleConnectReq
83 **
84 ** Description Cancel a pending connection attempt to a BLE device.
85 **
86 ** Parameters: BD Address of remote
87 **
88 ** Return value: TRUE if connection was cancelled
89 **
90 *******************************************************************************/
L2CA_CancelBleConnectReq(BD_ADDR rem_bda)91 BOOLEAN L2CA_CancelBleConnectReq (BD_ADDR rem_bda)
92 {
93 tL2C_LCB *p_lcb;
94
95 /* There can be only one BLE connection request outstanding at a time */
96 if (btm_ble_get_conn_st() == BLE_CONN_IDLE) {
97 L2CAP_TRACE_WARNING ("L2CA_CancelBleConnectReq - no connection pending");
98 return (FALSE);
99 }
100
101 if (memcmp (rem_bda, l2cb.ble_connecting_bda, BD_ADDR_LEN)) {
102 L2CAP_TRACE_WARNING ("L2CA_CancelBleConnectReq - different BDA Connecting: %08x%04x Cancel: %08x%04x",
103 (l2cb.ble_connecting_bda[0] << 24) + (l2cb.ble_connecting_bda[1] << 16) + (l2cb.ble_connecting_bda[2] << 8) + l2cb.ble_connecting_bda[3],
104 (l2cb.ble_connecting_bda[4] << 8) + l2cb.ble_connecting_bda[5],
105 (rem_bda[0] << 24) + (rem_bda[1] << 16) + (rem_bda[2] << 8) + rem_bda[3], (rem_bda[4] << 8) + rem_bda[5]);
106
107 return (FALSE);
108 }
109
110 if (btsnd_hcic_ble_create_conn_cancel()) {
111 p_lcb = l2cu_find_lcb_by_bd_addr(rem_bda, BT_TRANSPORT_LE);
112 /* Do not remove lcb if an LE link is already up as a peripheral */
113 if (p_lcb != NULL &&
114 !(p_lcb->link_role == HCI_ROLE_SLAVE && BTM_LE_ACL_IS_CONNECTED(rem_bda))) {
115 p_lcb->disc_reason = L2CAP_CONN_CANCEL;
116 l2cu_release_lcb (p_lcb);
117 }
118 /* update state to be cancel, wait for connection cancel complete */
119 btm_ble_set_conn_st (BLE_CONN_CANCEL);
120
121 return (TRUE);
122 } else {
123 return (FALSE);
124 }
125 }
126
127 /*******************************************************************************
128 **
129 ** Function L2CA_UpdateBleConnParams
130 **
131 ** Description Update BLE connection parameters.
132 **
133 ** Parameters: BD Address of remote
134 **
135 ** Return value: TRUE if update started
136 **
137 *******************************************************************************/
L2CA_UpdateBleConnParams(BD_ADDR rem_bda,UINT16 min_int,UINT16 max_int,UINT16 latency,UINT16 timeout)138 BOOLEAN L2CA_UpdateBleConnParams (BD_ADDR rem_bda, UINT16 min_int, UINT16 max_int,
139 UINT16 latency, UINT16 timeout)
140 {
141 tL2C_LCB *p_lcb;
142 tACL_CONN *p_acl_cb = btm_bda_to_acl(rem_bda, BT_TRANSPORT_LE);
143 UINT8 status = HCI_SUCCESS;
144 BOOLEAN need_cb = false;
145
146 /* See if we have a link control block for the remote device */
147 p_lcb = l2cu_find_lcb_by_bd_addr (rem_bda, BT_TRANSPORT_LE);
148
149 /* If we don't have one, create one and accept the connection. */
150 if (!p_lcb || !p_acl_cb) {
151 L2CAP_TRACE_WARNING ("L2CA_UpdateBleConnParams - unknown BD_ADDR %08x%04x",
152 (rem_bda[0] << 24) + (rem_bda[1] << 16) + (rem_bda[2] << 8) + rem_bda[3],
153 (rem_bda[4] << 8) + rem_bda[5]);
154 return (FALSE);
155 }
156
157 if (p_lcb->transport != BT_TRANSPORT_LE) {
158 L2CAP_TRACE_WARNING ("L2CA_UpdateBleConnParams - BD_ADDR %08x%04x not LE",
159 (rem_bda[0] << 24) + (rem_bda[1] << 16) + (rem_bda[2] << 8) + rem_bda[3],
160 (rem_bda[4] << 8) + rem_bda[5]);
161 return (FALSE);
162 }
163
164 /* Check whether the request conn params is already set */
165 if ((max_int == p_lcb->current_used_conn_interval) && (latency == p_lcb->current_used_conn_latency) &&
166 (timeout == p_lcb->current_used_conn_timeout)) {
167 status = HCI_SUCCESS;
168 need_cb = true;
169 L2CAP_TRACE_WARNING("%s connection parameter already set", __func__);
170 }
171
172 if (p_lcb->conn_update_mask & L2C_BLE_UPDATE_PARAM_FULL){
173 status = HCI_ERR_ILLEGAL_COMMAND;
174 need_cb = true;
175 L2CAP_TRACE_ERROR("There are two connection parameter requests that are being updated, please try later ");
176 }
177
178 if ((need_cb == TRUE) && (conn_callback_func.update_conn_param_cb != NULL)) {
179 tBTM_LE_UPDATE_CONN_PRAMS update_param;
180 update_param.max_conn_int = max_int;
181 update_param.min_conn_int = min_int;
182 update_param.conn_int = p_lcb->current_used_conn_interval;
183 update_param.slave_latency = p_lcb->current_used_conn_latency;
184 update_param.supervision_tout = p_lcb->current_used_conn_timeout;
185 (conn_callback_func.update_conn_param_cb)(status, p_lcb->remote_bd_addr, &update_param);
186 return (status == HCI_SUCCESS);
187 }
188
189 p_lcb->waiting_update_conn_min_interval = min_int;
190 p_lcb->waiting_update_conn_max_interval = max_int;
191 p_lcb->waiting_update_conn_latency = latency;
192 p_lcb->waiting_update_conn_timeout = timeout;
193
194 p_lcb->conn_update_mask |= L2C_BLE_NEW_CONN_PARAM;
195
196 if(l2cble_start_conn_update(p_lcb) == TRUE) {
197 UINT32 time = CalConnectParamTimeout(p_lcb);
198 btu_start_timer(&p_lcb->upda_con_timer, BTU_TTYPE_L2CAP_UPDA_CONN_PARAMS, time);
199 }
200
201 return (TRUE);
202 }
203
204
205 /*******************************************************************************
206 **
207 ** Function L2CA_EnableUpdateBleConnParams
208 **
209 ** Description Enable or disable update based on the request from the peer
210 **
211 ** Parameters: BD Address of remote
212 **
213 ** Return value: TRUE if update started
214 **
215 *******************************************************************************/
L2CA_EnableUpdateBleConnParams(BD_ADDR rem_bda,BOOLEAN enable)216 BOOLEAN L2CA_EnableUpdateBleConnParams (BD_ADDR rem_bda, BOOLEAN enable)
217 {
218 tL2C_LCB *p_lcb;
219
220 /* See if we have a link control block for the remote device */
221 p_lcb = l2cu_find_lcb_by_bd_addr (rem_bda, BT_TRANSPORT_LE);
222
223 if (!p_lcb) {
224 L2CAP_TRACE_WARNING ("L2CA_EnableUpdateBleConnParams - unknown BD_ADDR %08x%04x",
225 (rem_bda[0] << 24) + (rem_bda[1] << 16) + (rem_bda[2] << 8) + rem_bda[3],
226 (rem_bda[4] << 8) + rem_bda[5]);
227 return (FALSE);
228 }
229
230 L2CAP_TRACE_API ("%s - BD_ADDR %08x%04x enable %d current upd state 0x%02x", __FUNCTION__,
231 (rem_bda[0] << 24) + (rem_bda[1] << 16) + (rem_bda[2] << 8) + rem_bda[3],
232 (rem_bda[4] << 8) + rem_bda[5], enable, p_lcb->conn_update_mask);
233
234 if (p_lcb->transport != BT_TRANSPORT_LE) {
235 L2CAP_TRACE_WARNING ("%s - BD_ADDR %08x%04x not LE (link role %d)", __FUNCTION__,
236 (rem_bda[0] << 24) + (rem_bda[1] << 16) + (rem_bda[2] << 8) + rem_bda[3],
237 (rem_bda[4] << 8) + rem_bda[5], p_lcb->link_role);
238 return (FALSE);
239 }
240
241 if (p_lcb->current_used_conn_interval <= BTM_BLE_CONN_INT_MAX_DEF && (p_lcb->conn_update_mask & L2C_BLE_CONN_UPDATE_DISABLE) == 0){
242 return (FALSE);
243 }
244 bool is_disable = (p_lcb->conn_update_mask & L2C_BLE_CONN_UPDATE_DISABLE);
245 if(l2cu_plcb_active_count() >1 && !(enable && is_disable)) {
246 return FALSE;
247 }
248
249 if (enable) {
250 p_lcb->conn_update_mask &= ~L2C_BLE_CONN_UPDATE_DISABLE;
251 } else {
252 p_lcb->conn_update_mask |= L2C_BLE_CONN_UPDATE_DISABLE;
253 }
254
255 if (l2cble_start_conn_update(p_lcb) == TRUE) {
256 UINT32 time = CalConnectParamTimeout(p_lcb);
257 btu_start_timer(&p_lcb->upda_con_timer, BTU_TTYPE_L2CAP_UPDA_CONN_PARAMS, time);
258 }
259
260 return (TRUE);
261 }
262
263
264 /*******************************************************************************
265 **
266 ** Function L2CA_GetBleConnRole
267 **
268 ** Description This function returns the connection role.
269 **
270 ** Returns link role.
271 **
272 *******************************************************************************/
L2CA_GetBleConnRole(BD_ADDR bd_addr)273 UINT8 L2CA_GetBleConnRole (BD_ADDR bd_addr)
274 {
275 UINT8 role = HCI_ROLE_UNKNOWN;
276
277 tL2C_LCB *p_lcb;
278
279 if ((p_lcb = l2cu_find_lcb_by_bd_addr (bd_addr, BT_TRANSPORT_LE)) != NULL) {
280 role = p_lcb->link_role;
281 }
282
283 return role;
284 }
285
286 /*******************************************************************************
287 **
288 ** Function l2cble_notify_le_connection
289 **
290 ** Description This function notify the l2cap connection to the app layer
291 **
292 ** Returns none
293 **
294 *******************************************************************************/
l2cble_notify_le_connection(BD_ADDR bda)295 void l2cble_notify_le_connection (BD_ADDR bda)
296 {
297 tL2C_LCB *p_lcb = l2cu_find_lcb_by_bd_addr (bda, BT_TRANSPORT_LE);
298 tACL_CONN *p_acl = btm_bda_to_acl(bda, BT_TRANSPORT_LE) ;
299
300 if (p_lcb != NULL && p_acl != NULL && p_lcb->link_state != LST_CONNECTED) {
301
302 if(p_acl->link_role == HCI_ROLE_SLAVE) {
303 //clear p_cb->state, controller will stop adv when ble connected.
304 tBTM_BLE_INQ_CB *p_cb = &btm_cb.ble_ctr_cb.inq_var;
305 if(p_cb) {
306 p_cb->adv_mode = BTM_BLE_ADV_DISABLE;
307 p_cb->state &= ~BTM_BLE_ADVERTISING;
308 }
309 }
310 /* update link status */
311 btm_establish_continue(p_acl);
312 /* update l2cap link status and send callback */
313 p_lcb->link_state = LST_CONNECTED;
314 l2cu_process_fixed_chnl_resp (p_lcb);
315 }
316 }
317
318 /*******************************************************************************
319 **
320 ** Function l2cble_scanner_conn_comp
321 **
322 ** Description This function is called when an HCI Connection Complete
323 ** event is received while we are a scanner (so we are master).
324 **
325 ** Returns void
326 **
327 *******************************************************************************/
l2cble_scanner_conn_comp(UINT16 handle,BD_ADDR bda,tBLE_ADDR_TYPE type,UINT16 conn_interval,UINT16 conn_latency,UINT16 conn_timeout)328 void l2cble_scanner_conn_comp (UINT16 handle, BD_ADDR bda, tBLE_ADDR_TYPE type,
329 UINT16 conn_interval, UINT16 conn_latency, UINT16 conn_timeout)
330 {
331 tL2C_LCB *p_lcb;
332 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_or_alloc_dev (bda);
333
334 L2CAP_TRACE_DEBUG ("l2cble_scanner_conn_comp: HANDLE=%d addr_type=%d conn_interval=%d slave_latency=%d supervision_tout=%d",
335 handle, type, conn_interval, conn_latency, conn_timeout);
336
337 l2cb.is_ble_connecting = FALSE;
338
339 /* See if we have a link control block for the remote device */
340 p_lcb = l2cu_find_lcb_by_bd_addr (bda, BT_TRANSPORT_LE);
341
342 /* If we don't have one, create one. this is auto connection complete. */
343 if (!p_lcb) {
344 p_lcb = l2cu_allocate_lcb (bda, FALSE, BT_TRANSPORT_LE);
345 if (!p_lcb) {
346 #if (SMP_INCLUDED == TRUE)
347 btm_sec_disconnect (handle, HCI_ERR_NO_CONNECTION);
348 L2CAP_TRACE_ERROR ("l2cble_scanner_conn_comp - failed to allocate LCB");
349 #endif ///SMP_INCLUDED == TRUE
350 return;
351 } else {
352 if (!l2cu_initialize_fixed_ccb (p_lcb, L2CAP_ATT_CID, &l2cb.fixed_reg[L2CAP_ATT_CID - L2CAP_FIRST_FIXED_CHNL].fixed_chnl_opts)) {
353 #if (SMP_INCLUDED == TRUE)
354 btm_sec_disconnect (handle, HCI_ERR_NO_CONNECTION);
355 L2CAP_TRACE_WARNING ("l2cble_scanner_conn_comp - LCB but no CCB");
356 #endif ///SMP_INCLUDED == TRUE
357 return ;
358 }
359 }
360 } else if (p_lcb->link_state != LST_CONNECTING) {
361 L2CAP_TRACE_ERROR ("L2CAP got BLE scanner conn_comp in bad state: %d", p_lcb->link_state);
362 return;
363 }
364 btu_stop_timer(&p_lcb->timer_entry);
365
366 /* Save the handle */
367 p_lcb->handle = handle;
368
369 /* Connected OK. Change state to connected, we were scanning so we are master */
370 p_lcb->link_role = HCI_ROLE_MASTER;
371 p_lcb->transport = BT_TRANSPORT_LE;
372
373 /* update link parameter, set slave link as non-spec default upon link up */
374 p_lcb->waiting_update_conn_min_interval = p_lcb->waiting_update_conn_max_interval = p_lcb->current_used_conn_interval = conn_interval;
375 p_lcb->waiting_update_conn_timeout = p_lcb->current_used_conn_timeout = conn_timeout;
376 p_lcb->waiting_update_conn_latency = p_lcb->current_used_conn_latency = conn_latency;
377 p_lcb->conn_update_mask = L2C_BLE_NOT_DEFAULT_PARAM;
378 p_lcb->updating_param_flag = false;
379 p_lcb->ble_addr_type = type;
380
381 /* If there are any preferred connection parameters, set them now */
382 if ( (p_dev_rec->conn_params.min_conn_int >= BTM_BLE_CONN_INT_MIN ) &&
383 (p_dev_rec->conn_params.min_conn_int <= BTM_BLE_CONN_INT_MAX ) &&
384 (p_dev_rec->conn_params.max_conn_int >= BTM_BLE_CONN_INT_MIN ) &&
385 (p_dev_rec->conn_params.max_conn_int <= BTM_BLE_CONN_INT_MAX ) &&
386 (p_dev_rec->conn_params.slave_latency <= BTM_BLE_CONN_LATENCY_MAX ) &&
387 (p_dev_rec->conn_params.supervision_tout >= BTM_BLE_CONN_SUP_TOUT_MIN) &&
388 (p_dev_rec->conn_params.supervision_tout <= BTM_BLE_CONN_SUP_TOUT_MAX) &&
389 ((conn_interval < p_dev_rec->conn_params.min_conn_int &&
390 p_dev_rec->conn_params.min_conn_int != BTM_BLE_CONN_PARAM_UNDEF) ||
391 (conn_interval > p_dev_rec->conn_params.max_conn_int) ||
392 (conn_latency > p_dev_rec->conn_params.slave_latency) ||
393 (conn_timeout > p_dev_rec->conn_params.supervision_tout))) {
394 L2CAP_TRACE_ERROR ("upd_ll_conn_params: HANDLE=%d min_conn_int=%d max_conn_int=%d slave_latency=%d supervision_tout=%d",
395 handle, p_dev_rec->conn_params.min_conn_int, p_dev_rec->conn_params.max_conn_int,
396 p_dev_rec->conn_params.slave_latency, p_dev_rec->conn_params.supervision_tout);
397
398 p_lcb->waiting_update_conn_min_interval = p_dev_rec->conn_params.min_conn_int;
399 p_lcb->waiting_update_conn_max_interval = p_dev_rec->conn_params.max_conn_int;
400 p_lcb->waiting_update_conn_timeout = p_dev_rec->conn_params.supervision_tout;
401 p_lcb->waiting_update_conn_latency = p_dev_rec->conn_params.slave_latency;
402
403 btsnd_hcic_ble_upd_ll_conn_params (handle,
404 p_dev_rec->conn_params.min_conn_int,
405 p_dev_rec->conn_params.max_conn_int,
406 p_dev_rec->conn_params.slave_latency,
407 p_dev_rec->conn_params.supervision_tout,
408 BLE_CE_LEN_MIN, BLE_CE_LEN_MIN);
409 }
410
411 /* Tell BTM Acl management about the link */
412 btm_acl_created (bda, NULL, p_dev_rec->sec_bd_name, handle, p_lcb->link_role, BT_TRANSPORT_LE);
413
414 p_lcb->peer_chnl_mask[0] = L2CAP_FIXED_CHNL_ATT_BIT | L2CAP_FIXED_CHNL_BLE_SIG_BIT | L2CAP_FIXED_CHNL_SMP_BIT;
415
416 btm_ble_set_conn_st(BLE_CONN_IDLE);
417
418 #if BLE_PRIVACY_SPT == TRUE
419 btm_ble_disable_resolving_list(BTM_BLE_RL_INIT, TRUE);
420 #endif
421 }
422
423
424 /*******************************************************************************
425 **
426 ** Function l2cble_advertiser_conn_comp
427 **
428 ** Description This function is called when an HCI Connection Complete
429 ** event is received while we are an advertiser (so we are slave).
430 **
431 ** Returns void
432 **
433 *******************************************************************************/
l2cble_advertiser_conn_comp(UINT16 handle,BD_ADDR bda,tBLE_ADDR_TYPE type,UINT16 conn_interval,UINT16 conn_latency,UINT16 conn_timeout)434 void l2cble_advertiser_conn_comp (UINT16 handle, BD_ADDR bda, tBLE_ADDR_TYPE type,
435 UINT16 conn_interval, UINT16 conn_latency, UINT16 conn_timeout)
436 {
437 tL2C_LCB *p_lcb;
438 tBTM_SEC_DEV_REC *p_dev_rec;
439 UNUSED(type);
440 UNUSED(conn_interval);
441 UNUSED(conn_latency);
442 UNUSED(conn_timeout);
443
444 /* See if we have a link control block for the remote device */
445 p_lcb = l2cu_find_lcb_by_bd_addr (bda, BT_TRANSPORT_LE);
446
447 /* If we don't have one, create one and accept the connection. */
448 if (!p_lcb) {
449 p_lcb = l2cu_allocate_lcb (bda, FALSE, BT_TRANSPORT_LE);
450 if (!p_lcb) {
451 #if (SMP_INCLUDED == TRUE)
452 btm_sec_disconnect (handle, HCI_ERR_NO_CONNECTION);
453 #endif ///SMP_INCLUDED == TRUE
454 L2CAP_TRACE_ERROR ("l2cble_advertiser_conn_comp - failed to allocate LCB");
455 return;
456 } else {
457 if (!l2cu_initialize_fixed_ccb (p_lcb, L2CAP_ATT_CID, &l2cb.fixed_reg[L2CAP_ATT_CID - L2CAP_FIRST_FIXED_CHNL].fixed_chnl_opts)) {
458 #if (SMP_INCLUDED == TRUE)
459 btm_sec_disconnect (handle, HCI_ERR_NO_CONNECTION);
460 #endif ///SMP_INCLUDED == TRUE
461 L2CAP_TRACE_WARNING ("l2cble_scanner_conn_comp - LCB but no CCB");
462 return ;
463 }
464 }
465 }
466
467 /* Save the handle */
468 p_lcb->handle = handle;
469
470 /* Connected OK. Change state to connected, we were advertising, so we are slave */
471 p_lcb->link_role = HCI_ROLE_SLAVE;
472 p_lcb->transport = BT_TRANSPORT_LE;
473
474 /* update link parameter, set slave link as non-spec default upon link up */
475 p_lcb->waiting_update_conn_min_interval = p_lcb->waiting_update_conn_max_interval = p_lcb->current_used_conn_interval = conn_interval;
476 p_lcb->waiting_update_conn_timeout = p_lcb->current_used_conn_timeout = conn_timeout;
477 p_lcb->waiting_update_conn_latency = p_lcb->current_used_conn_latency = conn_latency;
478 p_lcb->conn_update_mask = L2C_BLE_NOT_DEFAULT_PARAM;
479 p_lcb->updating_param_flag = false;
480 p_lcb->ble_addr_type = type;
481
482 /* Tell BTM Acl management about the link */
483 p_dev_rec = btm_find_or_alloc_dev (bda);
484
485 btm_acl_created (bda, NULL, p_dev_rec->sec_bd_name, handle, p_lcb->link_role, BT_TRANSPORT_LE);
486
487 #if BLE_PRIVACY_SPT == TRUE
488 btm_ble_disable_resolving_list(BTM_BLE_RL_ADV, TRUE);
489 #endif
490
491 p_lcb->peer_chnl_mask[0] = L2CAP_FIXED_CHNL_ATT_BIT | L2CAP_FIXED_CHNL_BLE_SIG_BIT | L2CAP_FIXED_CHNL_SMP_BIT;
492
493 if (!HCI_LE_SLAVE_INIT_FEAT_EXC_SUPPORTED(controller_get_interface()->get_features_ble()->as_array)) {
494 p_lcb->link_state = LST_CONNECTED;
495 l2cu_process_fixed_chnl_resp (p_lcb);
496 }
497
498 /* when adv and initiating are both active, cancel the direct connection */
499 if (l2cb.is_ble_connecting && memcmp(bda, l2cb.ble_connecting_bda, BD_ADDR_LEN) == 0) {
500 L2CA_CancelBleConnectReq(bda);
501 }
502 }
503
504 /*******************************************************************************
505 **
506 ** Function l2cble_conn_comp
507 **
508 ** Description This function is called when an HCI Connection Complete
509 ** event is received.
510 **
511 ** Returns void
512 **
513 *******************************************************************************/
l2cble_conn_comp(UINT16 handle,UINT8 role,BD_ADDR bda,tBLE_ADDR_TYPE type,UINT16 conn_interval,UINT16 conn_latency,UINT16 conn_timeout)514 void l2cble_conn_comp(UINT16 handle, UINT8 role, BD_ADDR bda, tBLE_ADDR_TYPE type,
515 UINT16 conn_interval, UINT16 conn_latency, UINT16 conn_timeout)
516 {
517 btm_ble_update_link_topology_mask(role, TRUE);
518
519 if (role == HCI_ROLE_MASTER) {
520 l2cble_scanner_conn_comp(handle, bda, type, conn_interval, conn_latency, conn_timeout);
521 } else {
522 l2cble_advertiser_conn_comp(handle, bda, type, conn_interval, conn_latency, conn_timeout);
523 }
524 }
525
526 /*******************************************************************************
527 **
528 ** Function l2cble_start_conn_update
529 **
530 ** Description start BLE connection parameter update process based on status
531 **
532 ** Parameters: lcb : l2cap link control block
533 **
534 ** Return value: true if successfully sending the request to peer device, else false.
535 **
536 *******************************************************************************/
l2cble_start_conn_update(tL2C_LCB * p_lcb)537 static BOOLEAN l2cble_start_conn_update (tL2C_LCB *p_lcb)
538 {
539 UINT16 min_conn_int, max_conn_int, slave_latency, supervision_tout;
540 #if (defined BLE_LLT_INCLUDED) && (BLE_LLT_INCLUDED == TRUE) && (BLE_SLAVE_UPD_CONN_PARAMS == TRUE)
541 tACL_CONN *p_acl_cb = btm_bda_to_acl(p_lcb->remote_bd_addr, BT_TRANSPORT_LE);
542 #endif /* defined BLE_LLT_INCLUDED) && (BLE_LLT_INCLUDED == TRUE) && (BLE_SLAVE_UPD_CONN_PARAMS == TRUE */
543
544 if (p_lcb->conn_update_mask & L2C_BLE_UPDATE_PENDING) {
545 L2CAP_TRACE_WARNING("%s, the last connection update command still pending.", __func__);
546 p_lcb->conn_update_mask |= L2C_BLE_UPDATE_PARAM_FULL;
547 return FALSE;
548 }
549
550 if (p_lcb->conn_update_mask & L2C_BLE_CONN_UPDATE_DISABLE) {
551 /* application requests to disable parameters update.
552 If parameters are already updated, lets set them
553 up to what has been requested during connection establishement */
554 if (p_lcb->conn_update_mask & L2C_BLE_NOT_DEFAULT_PARAM &&
555 /* current connection interval is greater than default min */
556 p_lcb->current_used_conn_interval > BTM_BLE_CONN_INT_MAX_DEF) {
557 /* use 6 * 1.25 = 7.5 ms as fast connection parameter, 0 slave latency */
558 min_conn_int = max_conn_int = BTM_BLE_CONN_INT_MIN;
559 slave_latency = BTM_BLE_CONN_SLAVE_LATENCY_DEF;
560 supervision_tout = BTM_BLE_CONN_TIMEOUT_DEF;
561
562 /* if both side 4.1, or we are master device, send HCI command */
563 if (p_lcb->link_role == HCI_ROLE_MASTER
564 #if (defined BLE_LLT_INCLUDED) && (BLE_LLT_INCLUDED == TRUE) && (BLE_SLAVE_UPD_CONN_PARAMS == TRUE)
565 || (HCI_LE_CONN_PARAM_REQ_SUPPORTED(controller_get_interface()->get_features_ble()->as_array) &&
566 HCI_LE_CONN_PARAM_REQ_SUPPORTED(p_acl_cb->peer_le_features))
567 #endif
568 ) {
569 btsnd_hcic_ble_upd_ll_conn_params(p_lcb->handle, min_conn_int, max_conn_int,
570 slave_latency, supervision_tout, BLE_CE_LEN_MIN, BLE_CE_LEN_MIN);
571 } else {
572 l2cu_send_peer_ble_par_req (p_lcb, min_conn_int, max_conn_int, slave_latency, supervision_tout);
573 }
574
575 //cache save
576 p_lcb->updating_conn_min_interval = min_conn_int;
577 p_lcb->updating_conn_max_interval = max_conn_int;
578 p_lcb->updating_param_flag = true;
579
580 p_lcb->conn_update_mask |= L2C_BLE_UPDATE_PENDING;
581 p_lcb->conn_update_mask &= ~L2C_BLE_NOT_DEFAULT_PARAM;
582 p_lcb->conn_update_mask |= L2C_BLE_NEW_CONN_PARAM;
583 return TRUE;
584 }else {
585 return FALSE;
586 }
587 } else {
588 /* application allows to do update, if we were delaying one do it now */
589 if (p_lcb->conn_update_mask & L2C_BLE_NEW_CONN_PARAM) {
590 /* if both side 4.1, or we are master device, send HCI command */
591 if (p_lcb->link_role == HCI_ROLE_MASTER
592 #if (defined BLE_LLT_INCLUDED) && (BLE_LLT_INCLUDED == TRUE) && (BLE_SLAVE_UPD_CONN_PARAMS == TRUE)
593 || (HCI_LE_CONN_PARAM_REQ_SUPPORTED(controller_get_interface()->get_features_ble()->as_array) &&
594 HCI_LE_CONN_PARAM_REQ_SUPPORTED(p_acl_cb->peer_le_features))
595 #endif
596 ) {
597 btsnd_hcic_ble_upd_ll_conn_params(p_lcb->handle, p_lcb->waiting_update_conn_min_interval,
598 p_lcb->waiting_update_conn_max_interval, p_lcb->waiting_update_conn_latency, p_lcb->waiting_update_conn_timeout, BLE_CE_LEN_MIN, BLE_CE_LEN_MIN);
599 } else {
600 l2cu_send_peer_ble_par_req (p_lcb, p_lcb->waiting_update_conn_min_interval, p_lcb->waiting_update_conn_max_interval,
601 p_lcb->waiting_update_conn_latency, p_lcb->waiting_update_conn_timeout);
602 }
603
604 //cache save
605 p_lcb->updating_conn_min_interval = p_lcb->waiting_update_conn_min_interval;
606 p_lcb->updating_conn_max_interval = p_lcb->waiting_update_conn_max_interval;
607 p_lcb->updating_param_flag = true;
608
609 p_lcb->conn_update_mask |= L2C_BLE_UPDATE_PENDING;
610 p_lcb->conn_update_mask &= ~L2C_BLE_NEW_CONN_PARAM;
611 p_lcb->conn_update_mask |= L2C_BLE_NOT_DEFAULT_PARAM;
612 return TRUE;
613 } else {
614 return FALSE;
615 }
616 }
617 }
618
619 /*******************************************************************************
620 **
621 ** Function l2cble_process_conn_update_evt
622 **
623 ** Description This function enables the connection update request from remote
624 ** after a successful connection update response is received.
625 **
626 ** Returns void
627 **
628 *******************************************************************************/
l2cble_process_conn_update_evt(UINT16 handle,UINT8 status,UINT16 conn_interval,UINT16 conn_latency,UINT16 conn_timeout)629 void l2cble_process_conn_update_evt (UINT16 handle, UINT8 status, UINT16 conn_interval,
630 UINT16 conn_latency, UINT16 conn_timeout)
631 {
632 tL2C_LCB *p_lcb;
633
634 /* See if we have a link control block for the remote device */
635 p_lcb = l2cu_find_lcb_by_handle(handle);
636 if (!p_lcb) {
637 L2CAP_TRACE_WARNING("le con upd: inv hdl=%d", handle);
638 return;
639 }
640 if (status == HCI_SUCCESS){
641 p_lcb->current_used_conn_interval = conn_interval;
642 p_lcb->current_used_conn_latency = conn_latency;
643 p_lcb->current_used_conn_timeout = conn_timeout;
644 }else{
645 L2CAP_TRACE_WARNING("le con upd: err_stat=0x%x", status);
646 }
647
648 p_lcb->conn_update_mask &= ~L2C_BLE_UPDATE_PENDING;
649 p_lcb->conn_update_mask &= ~L2C_BLE_UPDATE_PARAM_FULL;
650 btu_stop_timer(&p_lcb->upda_con_timer);
651
652 if (conn_callback_func.update_conn_param_cb != NULL) {
653 l2c_send_update_conn_params_cb(p_lcb, status);
654 }
655
656 if (l2cble_start_conn_update(p_lcb) == TRUE) {
657 UINT32 time = CalConnectParamTimeout(p_lcb);
658 btu_start_timer(&p_lcb->upda_con_timer, BTU_TTYPE_L2CAP_UPDA_CONN_PARAMS, time);
659 }
660
661 btu_stop_timer (&p_lcb->timer_entry);
662
663 L2CAP_TRACE_DEBUG("le con upd: conn_update_mask=%d", p_lcb->conn_update_mask);
664 }
665
666 /*******************************************************************************
667 **
668 ** Function l2cble_get_conn_param_format_err_from_contoller
669 **
670 ** Description This function is called when host get illegal connection paramrters
671 ** format status from controller
672 **
673 ** Returns void
674 **
675 *******************************************************************************/
l2cble_get_conn_param_format_err_from_contoller(UINT8 status,UINT16 handle)676 void l2cble_get_conn_param_format_err_from_contoller (UINT8 status, UINT16 handle)
677 {
678 tL2C_LCB *p_lcb;
679
680 /* See if we have a link control block for the remote device */
681 p_lcb = l2cu_find_lcb_by_handle(handle);
682 if (!p_lcb) {
683 L2CAP_TRACE_ERROR("%s: Invalid handle: %d", __FUNCTION__, handle);
684 return;
685 }
686
687 p_lcb->conn_update_mask &= ~L2C_BLE_UPDATE_PENDING;
688
689 btu_stop_timer (&p_lcb->upda_con_timer);
690
691 if (conn_callback_func.update_conn_param_cb != NULL) {
692 l2c_send_update_conn_params_cb(p_lcb, status);
693 }
694 if ((p_lcb->conn_update_mask & L2C_BLE_UPDATE_PARAM_FULL) != 0){
695 p_lcb->conn_update_mask &= ~L2C_BLE_UPDATE_PARAM_FULL;
696 if (l2cble_start_conn_update(p_lcb) == TRUE) {
697 UINT32 time = CalConnectParamTimeout(p_lcb);
698 btu_start_timer(&p_lcb->upda_con_timer, BTU_TTYPE_L2CAP_UPDA_CONN_PARAMS, time);
699 }
700 }
701
702 }
703
704 /*******************************************************************************
705 **
706 ** Function l2cble_process_sig_cmd
707 **
708 ** Description This function is called when a signalling packet is received
709 ** on the BLE signalling CID
710 **
711 ** Returns void
712 **
713 *******************************************************************************/
l2cble_process_sig_cmd(tL2C_LCB * p_lcb,UINT8 * p,UINT16 pkt_len)714 void l2cble_process_sig_cmd (tL2C_LCB *p_lcb, UINT8 *p, UINT16 pkt_len)
715 {
716 UINT8 *p_pkt_end;
717 UINT8 cmd_code, id;
718 UINT16 cmd_len;
719 UINT16 min_interval, max_interval, latency, timeout;
720
721 p_pkt_end = p + pkt_len;
722
723 STREAM_TO_UINT8 (cmd_code, p);
724 STREAM_TO_UINT8 (id, p);
725 STREAM_TO_UINT16 (cmd_len, p);
726
727 /* Check command length does not exceed packet length */
728 if ((p + cmd_len) > p_pkt_end) {
729 L2CAP_TRACE_WARNING ("L2CAP - LE - format error, pkt_len: %d cmd_len: %d code: %d", pkt_len, cmd_len, cmd_code);
730 return;
731 }
732
733 switch (cmd_code) {
734 case L2CAP_CMD_REJECT:
735 case L2CAP_CMD_ECHO_RSP:
736 case L2CAP_CMD_INFO_RSP:
737 p += 2;
738 break;
739 case L2CAP_CMD_ECHO_REQ:
740 case L2CAP_CMD_INFO_REQ:
741 l2cu_send_peer_cmd_reject (p_lcb, L2CAP_CMD_REJ_NOT_UNDERSTOOD, id, 0, 0);
742 break;
743
744 case L2CAP_CMD_BLE_UPDATE_REQ:
745 STREAM_TO_UINT16 (min_interval, p); /* 0x0006 - 0x0C80 */
746 STREAM_TO_UINT16 (max_interval, p); /* 0x0006 - 0x0C80 */
747 STREAM_TO_UINT16 (latency, p); /* 0x0000 - 0x03E8 */
748 STREAM_TO_UINT16 (timeout, p); /* 0x000A - 0x0C80 */
749 /* If we are a master, the slave wants to update the parameters */
750 if (p_lcb->link_role == HCI_ROLE_MASTER) {
751 if (min_interval < BTM_BLE_CONN_INT_MIN || min_interval > BTM_BLE_CONN_INT_MAX ||
752 max_interval < BTM_BLE_CONN_INT_MIN || max_interval > BTM_BLE_CONN_INT_MAX ||
753 latency > BTM_BLE_CONN_LATENCY_MAX ||
754 timeout < BTM_BLE_CONN_SUP_TOUT_MIN || timeout > BTM_BLE_CONN_SUP_TOUT_MAX ||
755 /* The supervision_timeout parameter defines the link supervision timeout for the connection.
756 The supervision_timeout in milliseconds shall be large than (1 + latency) * max_interval * 2,
757 where max_interval is given in milliseconds. (See [Vol 6] Part B, Section 4.5.2).
758 supervision_timeout (mult of 10ms); conn_interval (mult of 1.25ms)
759 (max_interval * 1.25 * 2) replaced by ((max_interval * 5) >> 1).
760 */
761 ((timeout * 10) < ((1 + latency) *((max_interval * 5) >> 1))) ||
762 max_interval < min_interval) {
763 l2cu_send_peer_ble_par_rsp (p_lcb, L2CAP_CFG_UNACCEPTABLE_PARAMS, id);
764
765 L2CAP_TRACE_ERROR("slave connection parameters update failed, the parameters are out of range");
766
767 } else {
768
769 l2cu_send_peer_ble_par_rsp (p_lcb, L2CAP_CFG_OK, id);
770 p_lcb->waiting_update_conn_min_interval = min_interval;
771 p_lcb->waiting_update_conn_max_interval = max_interval;
772 p_lcb->waiting_update_conn_latency = latency;
773 p_lcb->waiting_update_conn_timeout = timeout;
774 p_lcb->conn_update_mask |= L2C_BLE_NEW_CONN_PARAM;
775
776 if (l2cble_start_conn_update(p_lcb) == TRUE) {
777 UINT32 time = CalConnectParamTimeout(p_lcb);
778 btu_start_timer(&p_lcb->upda_con_timer, BTU_TTYPE_L2CAP_UPDA_CONN_PARAMS, time);
779 }
780 }
781 } else {
782 l2cu_send_peer_cmd_reject (p_lcb, L2CAP_CMD_REJ_NOT_UNDERSTOOD, id, 0, 0);
783 }
784 break;
785
786 case L2CAP_CMD_BLE_UPDATE_RSP: {
787 UINT16 result = 0;
788 STREAM_TO_UINT16(result, p); //result = 0 connection param accepted, result = 1 connection param rejected.
789 UINT8 status = (result == 0) ? HCI_SUCCESS : HCI_ERR_PARAM_OUT_OF_RANGE;
790 if (status != HCI_SUCCESS) {
791 btu_stop_timer(&p_lcb->upda_con_timer);
792 p_lcb->conn_update_mask &= ~L2C_BLE_UPDATE_PENDING;
793 p_lcb->conn_update_mask &= ~L2C_BLE_UPDATE_PARAM_FULL;
794 l2c_send_update_conn_params_cb(p_lcb, status);
795 }
796 break;
797 }
798 case L2CAP_CMD_BLE_CREDIT_BASED_CONN_REQ: {
799 tL2C_CCB *p_ccb = NULL;
800 tL2C_RCB *p_rcb = NULL;
801 UINT16 spsm;
802 UINT16 scid;
803 UINT16 mtu;
804 UINT16 mps;
805 UINT16 credits;
806 STREAM_TO_UINT16(spsm, p);
807 STREAM_TO_UINT16(scid, p);
808 STREAM_TO_UINT16(mtu, p);
809 STREAM_TO_UINT16(mps, p);
810 STREAM_TO_UINT16(credits, p);
811 L2CAP_TRACE_DEBUG("%s spsm %x, scid %x", __func__, spsm, scid);
812 UNUSED(spsm);
813
814 p_ccb = l2cu_find_ccb_by_remote_cid(p_lcb, scid);
815 if (p_ccb) {
816 l2cu_reject_ble_connection(p_lcb, id, L2CAP_LE_RESULT_SOURCE_CID_ALREADY_ALLOCATED);
817 break;
818 }
819
820 #if 0
821 p_rcb = l2cu_find_ble_rcb_by_psm(spsm);
822 if (p_rcb == NULL) {
823 break;
824 }
825 #endif
826
827 p_ccb = l2cu_allocate_ccb(p_lcb, 0);
828 if (p_ccb == NULL) {
829 l2cu_reject_ble_connection(p_lcb, id, L2CAP_LE_RESULT_NO_RESOURCES);
830 break;
831 }
832
833 p_ccb->remote_id = id;
834 p_ccb->p_rcb = p_rcb;
835 p_ccb->remote_cid = scid;
836 p_ccb->local_conn_cfg.mtu = mtu;
837 p_ccb->local_conn_cfg.mps = controller_get_interface()->get_acl_data_size_ble();
838 p_ccb->local_conn_cfg.credits = credits;
839 p_ccb->peer_conn_cfg.mtu = mtu;
840 p_ccb->peer_conn_cfg.mps = mps;
841 p_ccb->peer_conn_cfg.credits = credits;
842
843 l2cu_send_peer_ble_credit_based_conn_res(p_ccb, L2CAP_LE_RESULT_CONN_OK);
844 break;
845 }
846 case L2CAP_CMD_DISC_REQ: {
847 tL2C_CCB *p_ccb = NULL;
848 UINT16 lcid;
849 UINT16 rcid;
850 STREAM_TO_UINT16(lcid, p);
851 STREAM_TO_UINT16(rcid, p);
852
853 p_ccb = l2cu_find_ccb_by_cid(p_lcb, lcid);
854 if (p_ccb) {
855 p_ccb->remote_id = id;
856 // TODO
857 }
858
859 l2cu_send_peer_disc_rsp(p_lcb, id, lcid, rcid);
860 break;
861 }
862 default:
863 L2CAP_TRACE_WARNING ("L2CAP - LE - unknown cmd code: %d", cmd_code);
864 l2cu_send_peer_cmd_reject (p_lcb, L2CAP_CMD_REJ_NOT_UNDERSTOOD, id, 0, 0);
865 return;
866 }
867 }
868
869 /*******************************************************************************
870 **
871 ** Function l2cble_init_direct_conn
872 **
873 ** Description This function is to initiate a direct connection
874 **
875 ** Returns TRUE connection initiated, FALSE otherwise.
876 **
877 *******************************************************************************/
l2cble_init_direct_conn(tL2C_LCB * p_lcb)878 BOOLEAN l2cble_init_direct_conn (tL2C_LCB *p_lcb)
879 {
880 #if ( (defined BLE_PRIVACY_SPT) && (BLE_PRIVACY_SPT == TRUE) && (!CONTROLLER_RPA_LIST_ENABLE))
881 //check for security device information in the cache
882 bool dev_rec_exist = true;
883 tBTM_SEC_DEV_REC *find_dev_rec = btm_find_dev (p_lcb->remote_bd_addr);
884 if(find_dev_rec == NULL) {
885 dev_rec_exist = false;
886 }
887
888 #endif // ( (defined BLE_PRIVACY_SPT) && (BLE_PRIVACY_SPT == TRUE) && (!CONTROLLER_RPA_LIST_ENABLE))
889 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_or_alloc_dev (p_lcb->remote_bd_addr);
890 tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb;
891 UINT16 scan_int;
892 UINT16 scan_win;
893 BD_ADDR peer_addr;
894 UINT8 peer_addr_type = BLE_ADDR_PUBLIC;
895 UINT8 own_addr_type = BLE_ADDR_PUBLIC;
896
897 /* There can be only one BLE connection request outstanding at a time */
898 if (p_dev_rec == NULL) {
899 L2CAP_TRACE_WARNING ("unknown device, can not initiate connection");
900 return (FALSE);
901 }
902
903 scan_int = (p_cb->scan_int == BTM_BLE_SCAN_PARAM_UNDEF) ? BTM_BLE_SCAN_FAST_INT : p_cb->scan_int;
904 scan_win = (p_cb->scan_win == BTM_BLE_SCAN_PARAM_UNDEF) ? BTM_BLE_SCAN_FAST_WIN : p_cb->scan_win;
905 if (p_dev_rec->conn_params.scan_interval && p_dev_rec->conn_params.scan_interval != BTM_BLE_CONN_PARAM_UNDEF) {
906 scan_int = p_dev_rec->conn_params.scan_interval;
907 }
908 if (p_dev_rec->conn_params.scan_window && p_dev_rec->conn_params.scan_window != BTM_BLE_CONN_PARAM_UNDEF) {
909 scan_win = p_dev_rec->conn_params.scan_window;
910 }
911
912 peer_addr_type = p_lcb->ble_addr_type;
913 memcpy(peer_addr, p_lcb->remote_bd_addr, BD_ADDR_LEN);
914
915 #if ( (defined BLE_PRIVACY_SPT) && (BLE_PRIVACY_SPT == TRUE))
916 own_addr_type = btm_cb.ble_ctr_cb.addr_mgnt_cb.own_addr_type;
917 #if (!CONTROLLER_RPA_LIST_ENABLE)
918 if(dev_rec_exist) {
919 // if the current address information is valid, get the real address information
920 if(p_dev_rec->ble.current_addr_valid) {
921 peer_addr_type = p_dev_rec->ble.current_addr_type;
922 memcpy(peer_addr, p_dev_rec->ble.current_addr, 6);
923 } else {
924 /* find security device information but not find the real address information
925 * This state may be directly open without scanning. In this case, you must
926 * use the current adv address of the device to open*/
927 }
928 } else {
929 //not find security device information, We think this is a new device, connect directly
930 }
931
932 /* It will cause that scanner doesn't send scan request to advertiser
933 * which has sent IRK to us and we have stored the IRK in controller.
934 * It is a hardware limitation. The preliminary solution is not to
935 * send key to the controller, but to resolve the random address in host.
936 * so we need send the real address information to controller. */
937
938 #endif // (!CONTROLLER_RPA_LIST_ENABLE)
939
940 #if (CONTROLLER_RPA_LIST_ENABLE)
941
942 if (p_dev_rec->ble.in_controller_list & BTM_RESOLVING_LIST_BIT) {
943 if (btm_cb.ble_ctr_cb.privacy_mode >= BTM_PRIVACY_1_2) {
944 own_addr_type |= BLE_ADDR_TYPE_ID_BIT;
945 }
946
947 //btm_ble_enable_resolving_list(BTM_BLE_RL_INIT);
948 btm_random_pseudo_to_identity_addr(peer_addr, &peer_addr_type);
949 } else {
950 btm_ble_disable_resolving_list(BTM_BLE_RL_INIT, TRUE);
951 }
952
953 #endif // CONTROLLER_RPA_LIST_ENABLE
954 #endif // (defined BLE_PRIVACY_SPT) && (BLE_PRIVACY_SPT == TRUE)
955
956 if (!btm_ble_topology_check(BTM_BLE_STATE_INIT)) {
957 l2cu_release_lcb (p_lcb);
958 L2CAP_TRACE_ERROR("initiate direct connection fail, topology limitation");
959 return FALSE;
960 }
961 uint32_t link_timeout = L2CAP_BLE_LINK_CONNECT_TOUT;
962 if(GATTC_CONNECT_RETRY_COUNT) {
963 if(!p_lcb->retry_create_con) {
964 p_lcb->start_time_s = (esp_system_get_time()/1000);
965 }
966 uint32_t current_time = (esp_system_get_time()/1000);
967 link_timeout = (L2CAP_BLE_LINK_CONNECT_TOUT*1000 - (current_time - p_lcb->start_time_s))/1000;
968
969 if(link_timeout == 0 || link_timeout > L2CAP_BLE_LINK_CONNECT_TOUT) {
970 link_timeout = L2CAP_BLE_LINK_CONNECT_TOUT;
971 }
972 }
973
974 if (!p_lcb->is_aux) {
975 if (!btsnd_hcic_ble_create_ll_conn (scan_int, /* UINT16 scan_int */
976 scan_win, /* UINT16 scan_win */
977 FALSE, /* UINT8 white_list */
978 peer_addr_type, /* UINT8 addr_type_peer */
979 peer_addr, /* BD_ADDR bda_peer */
980 own_addr_type, /* UINT8 addr_type_own */
981 (UINT16) ((p_dev_rec->conn_params.min_conn_int != BTM_BLE_CONN_PARAM_UNDEF) ?
982 p_dev_rec->conn_params.min_conn_int : BTM_BLE_CONN_INT_MIN_DEF), /* UINT16 conn_int_min */
983 (UINT16) ((p_dev_rec->conn_params.max_conn_int != BTM_BLE_CONN_PARAM_UNDEF) ?
984 p_dev_rec->conn_params.max_conn_int : BTM_BLE_CONN_INT_MAX_DEF), /* UINT16 conn_int_max */
985 (UINT16) ((p_dev_rec->conn_params.slave_latency != BTM_BLE_CONN_PARAM_UNDEF) ?
986 p_dev_rec->conn_params.slave_latency : BTM_BLE_CONN_SLAVE_LATENCY_DEF), /* UINT16 conn_latency */
987 (UINT16) ((p_dev_rec->conn_params.supervision_tout != BTM_BLE_CONN_PARAM_UNDEF) ?
988 p_dev_rec->conn_params.supervision_tout : BTM_BLE_CONN_TIMEOUT_DEF), /* UINT16 conn_timeout */
989 (UINT16) ((p_dev_rec->conn_params.min_ce_len != BTM_BLE_CONN_PARAM_UNDEF) ?
990 p_dev_rec->conn_params.min_ce_len : BLE_CE_LEN_MIN), /* UINT16 min_ce_len */
991 (UINT16) ((p_dev_rec->conn_params.max_ce_len != BTM_BLE_CONN_PARAM_UNDEF) ?
992 p_dev_rec->conn_params.max_ce_len : BLE_CE_LEN_MIN) /* UINT16 max_ce_len */)) {
993 l2cu_release_lcb (p_lcb);
994 L2CAP_TRACE_ERROR("initiate direct connection fail, no resources");
995 return (FALSE);
996 } else {
997 p_lcb->link_state = LST_CONNECTING;
998 l2cb.is_ble_connecting = TRUE;
999 memcpy (l2cb.ble_connecting_bda, p_lcb->remote_bd_addr, BD_ADDR_LEN);
1000 btu_start_timer (&p_lcb->timer_entry, BTU_TTYPE_L2CAP_LINK, link_timeout);
1001 btm_ble_set_conn_st (BLE_DIR_CONN);
1002
1003 return (TRUE);
1004 }
1005 } else {
1006 #if (BLE_50_FEATURE_SUPPORT == TRUE)
1007
1008 /*
1009 * 0x00 Public Device Address
1010 * 0x01 Random Device Address
1011 * 0x02 Public Identity Address (corresponds to Resolved Private Address)
1012 * 0x03 Random (static) Identity Address (corresponds to Resolved Private Address)
1013 * 0xFF No address provided (anonymous advertisement)
1014 */
1015
1016 if ((peer_addr_type & BLE_ADDR_RANDOM) == BLE_ADDR_RANDOM) {
1017 peer_addr_type = BLE_ADDR_RANDOM;
1018 } else {
1019 peer_addr_type = BLE_ADDR_PUBLIC;
1020 }
1021
1022 tHCI_CreatExtConn aux_conn = {0};
1023 aux_conn.filter_policy = FALSE;
1024 aux_conn.own_addr_type = own_addr_type;
1025 aux_conn.peer_addr_type = peer_addr_type;
1026 memcpy(aux_conn.peer_addr, peer_addr, sizeof(BD_ADDR));
1027 if (p_dev_rec->ext_conn_params.phy_mask == BLE_PHY_NO_PREF) {
1028 L2CAP_TRACE_WARNING("No extend connection parameters set, use default parameters");
1029 aux_conn.init_phy_mask = BLE_PHY_PREF_MASK;
1030 memcpy(&aux_conn.params[0], &ext_conn_params_1m_phy, sizeof(tHCI_ExtConnParams));
1031 memcpy(&aux_conn.params[1], &ext_conn_params_2m_phy, sizeof(tHCI_ExtConnParams));
1032 memcpy(&aux_conn.params[2], &ext_conn_params_coded_phy, sizeof(tHCI_ExtConnParams));
1033 } else {
1034 aux_conn.init_phy_mask = p_dev_rec->ext_conn_params.phy_mask;
1035 memcpy(&aux_conn.params[0], &p_dev_rec->ext_conn_params.phy_1m_conn_params, sizeof(tHCI_ExtConnParams));
1036 memcpy(&aux_conn.params[1], &p_dev_rec->ext_conn_params.phy_2m_conn_params, sizeof(tHCI_ExtConnParams));
1037 memcpy(&aux_conn.params[2], &p_dev_rec->ext_conn_params.phy_coded_conn_params, sizeof(tHCI_ExtConnParams));
1038 }
1039 p_lcb->link_state = LST_CONNECTING;
1040 l2cb.is_ble_connecting = TRUE;
1041 memcpy (l2cb.ble_connecting_bda, p_lcb->remote_bd_addr, BD_ADDR_LEN);
1042 btu_start_timer (&p_lcb->timer_entry, BTU_TTYPE_L2CAP_LINK, link_timeout);
1043 btm_ble_set_conn_st (BLE_DIR_CONN);
1044 if(!btsnd_hcic_ble_create_ext_conn(&aux_conn)) {
1045 l2cu_release_lcb (p_lcb);
1046 L2CAP_TRACE_ERROR("initiate Aux connection failed, no resources");
1047 }
1048 #else
1049 L2CAP_TRACE_ERROR("BLE 5.0 not support!\n");
1050 #endif // #if (BLE_50_FEATURE_SUPPORT == TRUE)
1051 return (TRUE);
1052 }
1053 }
1054
1055 /*******************************************************************************
1056 **
1057 ** Function l2cble_create_conn
1058 **
1059 ** Description This function initiates an acl connection via HCI
1060 **
1061 ** Returns TRUE if successful, FALSE if connection not started.
1062 **
1063 *******************************************************************************/
l2cble_create_conn(tL2C_LCB * p_lcb)1064 BOOLEAN l2cble_create_conn (tL2C_LCB *p_lcb)
1065 {
1066 tBTM_BLE_CONN_ST conn_st = btm_ble_get_conn_st();
1067 BOOLEAN rt = FALSE;
1068
1069 /* There can be only one BLE connection request outstanding at a time */
1070 if (conn_st == BLE_CONN_IDLE) {
1071 rt = l2cble_init_direct_conn(p_lcb);
1072 } else {
1073 L2CAP_TRACE_WARNING ("L2CAP - LE - cannot start new connection at conn st: %d", conn_st);
1074
1075 btm_ble_enqueue_direct_conn_req(p_lcb);
1076
1077 if (conn_st == BLE_BG_CONN) {
1078 btm_ble_suspend_bg_conn();
1079 }
1080
1081 rt = TRUE;
1082 }
1083 return rt;
1084 }
1085
1086 /*******************************************************************************
1087 **
1088 ** Function l2c_link_processs_ble_num_bufs
1089 **
1090 ** Description This function is called when a "controller buffer size"
1091 ** event is first received from the controller. It updates
1092 ** the L2CAP values.
1093 **
1094 ** Returns void
1095 **
1096 *******************************************************************************/
l2c_link_processs_ble_num_bufs(UINT16 num_lm_ble_bufs)1097 void l2c_link_processs_ble_num_bufs (UINT16 num_lm_ble_bufs)
1098 {
1099 if (num_lm_ble_bufs == 0) {
1100 num_lm_ble_bufs = L2C_DEF_NUM_BLE_BUF_SHARED;
1101 l2cb.num_lm_acl_bufs -= L2C_DEF_NUM_BLE_BUF_SHARED;
1102 }
1103 L2CAP_TRACE_DEBUG("num_lm_ble_bufs = %d",num_lm_ble_bufs);
1104 l2cb.num_lm_ble_bufs = l2cb.controller_le_xmit_window = num_lm_ble_bufs;
1105 }
1106
1107 /*******************************************************************************
1108 **
1109 ** Function l2c_ble_link_adjust_allocation
1110 **
1111 ** Description This function is called when a link is created or removed
1112 ** to calculate the amount of packets each link may send to
1113 ** the HCI without an ack coming back.
1114 **
1115 ** Currently, this is a simple allocation, dividing the
1116 ** number of Controller Packets by the number of links. In
1117 ** the future, QOS configuration should be examined.
1118 **
1119 ** Returns void
1120 **
1121 *******************************************************************************/
l2c_ble_link_adjust_allocation(void)1122 void l2c_ble_link_adjust_allocation (void)
1123 {
1124 UINT16 qq, qq_remainder;
1125 tL2C_LCB *p_lcb;
1126 UINT16 hi_quota, low_quota;
1127 UINT16 num_lowpri_links = 0;
1128 UINT16 num_hipri_links = 0;
1129 UINT16 controller_xmit_quota = l2cb.num_lm_ble_bufs;
1130 UINT16 high_pri_link_quota = L2CAP_HIGH_PRI_MIN_XMIT_QUOTA_A;
1131 list_node_t *p_node = NULL;
1132
1133 /* If no links active, reset buffer quotas and controller buffers */
1134 if (l2cb.num_ble_links_active == 0) {
1135 l2cb.controller_le_xmit_window = l2cb.num_lm_ble_bufs;
1136 l2cb.ble_round_robin_quota = l2cb.ble_round_robin_unacked = 0;
1137 return;
1138 }
1139
1140 /* First, count the links */
1141 for (p_node = list_begin(l2cb.p_lcb_pool); p_node; p_node = list_next(p_node)) {
1142 p_lcb = list_node(p_node);
1143 if (p_lcb->in_use && p_lcb->transport == BT_TRANSPORT_LE) {
1144 if (p_lcb->acl_priority == L2CAP_PRIORITY_HIGH) {
1145 num_hipri_links++;
1146 } else {
1147 num_lowpri_links++;
1148 }
1149 }
1150 }
1151
1152 /* now adjust high priority link quota */
1153 low_quota = num_lowpri_links ? 1 : 0;
1154 while ( (num_hipri_links * high_pri_link_quota + low_quota) > controller_xmit_quota ) {
1155 high_pri_link_quota--;
1156 }
1157
1158
1159 /* Work out the xmit quota and buffer quota high and low priorities */
1160 hi_quota = num_hipri_links * high_pri_link_quota;
1161 low_quota = (hi_quota < controller_xmit_quota) ? controller_xmit_quota - hi_quota : 1;
1162
1163 /* Work out and save the HCI xmit quota for each low priority link */
1164
1165 /* If each low priority link cannot have at least one buffer */
1166 if (num_lowpri_links > low_quota) {
1167 l2cb.ble_round_robin_quota = low_quota;
1168 qq = qq_remainder = 0;
1169 }
1170 /* If each low priority link can have at least one buffer */
1171 else if (num_lowpri_links > 0) {
1172 l2cb.ble_round_robin_quota = 0;
1173 l2cb.ble_round_robin_unacked = 0;
1174 qq = low_quota / num_lowpri_links;
1175 qq_remainder = low_quota % num_lowpri_links;
1176 }
1177 /* If no low priority link */
1178 else {
1179 l2cb.ble_round_robin_quota = 0;
1180 l2cb.ble_round_robin_unacked = 0;
1181 qq = qq_remainder = 0;
1182 }
1183 L2CAP_TRACE_EVENT ("l2c_ble_link_adjust_allocation num_hipri: %u num_lowpri: %u low_quota: %u round_robin_quota: %u qq: %u",
1184 num_hipri_links, num_lowpri_links, low_quota,
1185 l2cb.ble_round_robin_quota, qq);
1186
1187 /* Now, assign the quotas to each link */
1188 p_node = NULL;
1189 for (p_node = list_begin(l2cb.p_lcb_pool); p_node; p_node = list_next(p_node)) {
1190 p_lcb = list_node(p_node);
1191 if (p_lcb->in_use && p_lcb->transport == BT_TRANSPORT_LE) {
1192 if (p_lcb->acl_priority == L2CAP_PRIORITY_HIGH) {
1193 p_lcb->link_xmit_quota = high_pri_link_quota;
1194 } else {
1195 /* Safety check in case we switched to round-robin with something outstanding */
1196 /* if sent_not_acked is added into round_robin_unacked then don't add it again */
1197 /* l2cap keeps updating sent_not_acked for exiting from round robin */
1198 if (( p_lcb->link_xmit_quota > 0 ) && ( qq == 0 )) {
1199 l2cb.ble_round_robin_unacked += p_lcb->sent_not_acked;
1200 }
1201
1202 p_lcb->link_xmit_quota = qq;
1203 if (qq_remainder > 0) {
1204 p_lcb->link_xmit_quota++;
1205 qq_remainder--;
1206 }
1207 }
1208
1209 L2CAP_TRACE_EVENT("l2c_ble_link_adjust_allocation Priority: %d XmitQuota: %d",
1210 p_lcb->acl_priority, p_lcb->link_xmit_quota);
1211
1212 L2CAP_TRACE_EVENT(" SentNotAcked: %d RRUnacked: %d",
1213 p_lcb->sent_not_acked, l2cb.round_robin_unacked);
1214
1215 /* There is a special case where we have readjusted the link quotas and */
1216 /* this link may have sent anything but some other link sent packets so */
1217 /* so we may need a timer to kick off this link's transmissions. */
1218 if ( (p_lcb->link_state == LST_CONNECTED)
1219 && (!list_is_empty(p_lcb->link_xmit_data_q))
1220 && (p_lcb->sent_not_acked < p_lcb->link_xmit_quota) ) {
1221 btu_start_timer (&p_lcb->timer_entry, BTU_TTYPE_L2CAP_LINK, L2CAP_LINK_FLOW_CONTROL_TOUT);
1222 }
1223 }
1224 }
1225 }
1226
1227 #if (defined BLE_LLT_INCLUDED) && (BLE_LLT_INCLUDED == TRUE)
1228 /*******************************************************************************
1229 **
1230 ** Function l2cble_process_rc_param_request_evt
1231 **
1232 ** Description process LE Remote Connection Parameter Request Event.
1233 **
1234 ** Returns void
1235 **
1236 *******************************************************************************/
l2cble_process_rc_param_request_evt(UINT16 handle,UINT16 int_min,UINT16 int_max,UINT16 latency,UINT16 timeout)1237 void l2cble_process_rc_param_request_evt(UINT16 handle, UINT16 int_min, UINT16 int_max,
1238 UINT16 latency, UINT16 timeout)
1239 {
1240 tL2C_LCB *p_lcb = l2cu_find_lcb_by_handle (handle);
1241
1242 if (p_lcb != NULL) {
1243
1244 /* if update is enabled, always accept connection parameter update */
1245 if ((p_lcb->conn_update_mask & L2C_BLE_CONN_UPDATE_DISABLE) == 0) {
1246 p_lcb->conn_update_mask |= L2C_BLE_UPDATE_PENDING;
1247 btsnd_hcic_ble_rc_param_req_reply(handle, int_min, int_max, latency, timeout, BLE_CE_LEN_MIN, BLE_CE_LEN_MIN);
1248 }else {
1249 /* always accept connection parameters request which is sent by itself */
1250 if (int_max == BTM_BLE_CONN_INT_MIN) {
1251 p_lcb->conn_update_mask |= L2C_BLE_UPDATE_PENDING;
1252 btsnd_hcic_ble_rc_param_req_reply(handle, int_min, int_max, latency, timeout, BLE_CE_LEN_MIN, BLE_CE_LEN_MIN);
1253 }else {
1254 L2CAP_TRACE_EVENT ("L2CAP - LE - update currently disabled");
1255 p_lcb->conn_update_mask |= L2C_BLE_NEW_CONN_PARAM;
1256 btsnd_hcic_ble_rc_param_req_neg_reply (handle, HCI_ERR_UNACCEPT_CONN_INTERVAL);
1257 }
1258 }
1259
1260 } else {
1261 L2CAP_TRACE_WARNING("No link to update connection parameter")
1262 }
1263 }
1264 #endif
1265
1266 /*******************************************************************************
1267 **
1268 ** Function l2cble_update_data_length
1269 **
1270 ** Description This function update link tx data length if applicable
1271 **
1272 ** Returns void
1273 **
1274 *******************************************************************************/
l2cble_update_data_length(tL2C_LCB * p_lcb)1275 void l2cble_update_data_length(tL2C_LCB *p_lcb)
1276 {
1277 UINT16 tx_mtu = 0;
1278 UINT16 i = 0;
1279
1280 L2CAP_TRACE_DEBUG("%s", __FUNCTION__);
1281
1282 /* See if we have a link control block for the connection */
1283 if (p_lcb == NULL) {
1284 return;
1285 }
1286
1287 for (i = 0; i < L2CAP_NUM_FIXED_CHNLS; i++) {
1288 if (i + L2CAP_FIRST_FIXED_CHNL != L2CAP_BLE_SIGNALLING_CID) {
1289 if ((p_lcb->p_fixed_ccbs[i] != NULL) &&
1290 (tx_mtu < (p_lcb->p_fixed_ccbs[i]->tx_data_len + L2CAP_PKT_OVERHEAD))) {
1291 tx_mtu = p_lcb->p_fixed_ccbs[i]->tx_data_len + L2CAP_PKT_OVERHEAD;
1292 }
1293 }
1294 }
1295
1296 if (tx_mtu > BTM_BLE_DATA_SIZE_MAX) {
1297 tx_mtu = BTM_BLE_DATA_SIZE_MAX;
1298 }
1299
1300 /* update TX data length if changed */
1301 if (p_lcb->tx_data_len != tx_mtu) {
1302 BTM_SetBleDataLength(p_lcb->remote_bd_addr, tx_mtu);
1303 }
1304
1305 }
1306
1307 /*******************************************************************************
1308 **
1309 ** Function l2cble_process_data_length_change_evt
1310 **
1311 ** Description This function process the data length change event
1312 **
1313 ** Returns void
1314 **
1315 *******************************************************************************/
l2cble_process_data_length_change_event(UINT16 handle,UINT16 tx_data_len,UINT16 rx_data_len)1316 void l2cble_process_data_length_change_event(UINT16 handle, UINT16 tx_data_len, UINT16 rx_data_len)
1317 {
1318 tL2C_LCB *p_lcb = l2cu_find_lcb_by_handle(handle);
1319 tACL_CONN *p_acl = btm_handle_to_acl(handle);
1320 tBTM_LE_SET_PKT_DATA_LENGTH_PARAMS data_length_params;
1321
1322 L2CAP_TRACE_DEBUG("%s TX data len = %d", __FUNCTION__, tx_data_len);
1323 if (p_lcb == NULL) {
1324 return;
1325 }
1326
1327 if (tx_data_len > 0) {
1328 p_lcb->tx_data_len = tx_data_len;
1329 }
1330
1331 data_length_params.rx_len = rx_data_len;
1332 data_length_params.tx_len = tx_data_len;
1333
1334 if(p_acl) {
1335 p_acl->data_length_params = data_length_params;
1336 if (p_acl->p_set_pkt_data_cback) {
1337 // Only when the corresponding API is called will the callback be registered
1338 (*p_acl->p_set_pkt_data_cback)(BTM_SUCCESS, &data_length_params);
1339 } else {
1340 // If the callback is not registered,using global callback
1341 (*conn_callback_func.set_pkt_data_length_cb)(BTM_SUCCESS, &data_length_params);
1342 }
1343 p_acl->data_len_updating = false;
1344 if(p_acl->data_len_waiting) {
1345 p_acl->data_len_waiting = false;
1346 p_acl->p_set_pkt_data_cback = p_acl->p_set_data_len_cback_waiting;
1347 p_acl->p_set_data_len_cback_waiting = NULL;
1348 // if value is same, trigger callback directly
1349 if(p_acl->tx_len_waiting == p_acl->data_length_params.tx_len) {
1350 if(p_acl->p_set_pkt_data_cback) {
1351 (*p_acl->p_set_pkt_data_cback)(BTM_SUCCESS, &p_acl->data_length_params);
1352 }
1353 return;
1354 }
1355 p_acl->data_len_updating = true;
1356 /* always set the TxTime to be max, as controller does not care for now */
1357 btsnd_hcic_ble_set_data_length(handle, p_acl->tx_len_waiting,
1358 BTM_BLE_DATA_TX_TIME_MAX);
1359 }
1360 }
1361 }
1362
1363 /*******************************************************************************
1364 **
1365 ** Function l2cble_set_fixed_channel_tx_data_length
1366 **
1367 ** Description This function update max fixed channel tx data length if applicable
1368 **
1369 ** Returns void
1370 **
1371 *******************************************************************************/
l2cble_set_fixed_channel_tx_data_length(BD_ADDR remote_bda,UINT16 fix_cid,UINT16 tx_mtu)1372 void l2cble_set_fixed_channel_tx_data_length(BD_ADDR remote_bda, UINT16 fix_cid, UINT16 tx_mtu)
1373 {
1374 tL2C_LCB *p_lcb = l2cu_find_lcb_by_bd_addr(remote_bda, BT_TRANSPORT_LE);
1375 UINT16 cid = fix_cid - L2CAP_FIRST_FIXED_CHNL;
1376
1377 L2CAP_TRACE_DEBUG("%s TX MTU = %d", __FUNCTION__, tx_mtu);
1378
1379 if (!controller_get_interface()->supports_ble_packet_extension()) {
1380 L2CAP_TRACE_WARNING("%s, request not supported", __FUNCTION__);
1381 return;
1382 }
1383
1384 /* See if we have a link control block for the connection */
1385 if (p_lcb == NULL) {
1386 return;
1387 }
1388
1389 if (p_lcb->p_fixed_ccbs[cid] != NULL) {
1390 if (tx_mtu > BTM_BLE_DATA_SIZE_MAX) {
1391 tx_mtu = BTM_BLE_DATA_SIZE_MAX;
1392 }
1393
1394 p_lcb->p_fixed_ccbs[cid]->tx_data_len = tx_mtu;
1395 }
1396
1397 l2cble_update_data_length(p_lcb);
1398 }
1399
1400
1401 /*******************************************************************************
1402 **
1403 ** Function l2c_send_update_conn_params_cb
1404 **
1405 ** Description This function send the update connection parameter callback to the uplayer.
1406 **
1407 ** Returns void
1408 **
1409 *******************************************************************************/
l2c_send_update_conn_params_cb(tL2C_LCB * p_lcb,UINT8 status)1410 void l2c_send_update_conn_params_cb(tL2C_LCB *p_lcb, UINT8 status)
1411 {
1412 if(conn_callback_func.update_conn_param_cb != NULL){
1413 tBTM_LE_UPDATE_CONN_PRAMS update_param;
1414 //if myself update the connection parameters
1415 if (p_lcb->updating_param_flag){
1416 update_param.max_conn_int = p_lcb->updating_conn_max_interval;
1417 update_param.min_conn_int = p_lcb->updating_conn_min_interval;
1418 p_lcb->updating_param_flag = false;
1419 }else{
1420 // remote device update the connection parameters
1421 update_param.max_conn_int = update_param.min_conn_int = 0;
1422 }
1423 // current connection parameters
1424 update_param.conn_int = p_lcb->current_used_conn_interval;
1425 update_param.slave_latency = p_lcb->current_used_conn_latency;
1426 update_param.supervision_tout = p_lcb->current_used_conn_timeout;
1427
1428 (conn_callback_func.update_conn_param_cb)(status, p_lcb->remote_bd_addr, &update_param);
1429 }
1430 }
1431
1432 /*******************************************************************************
1433 **
1434 ** Function CalConnectParamTimeout
1435 **
1436 ** Description This function is called to calculate the connection parameter timeout.
1437 **
1438 ** Returns timeout
1439 **
1440 *******************************************************************************/
CalConnectParamTimeout(tL2C_LCB * p_lcb)1441 UINT32 CalConnectParamTimeout(tL2C_LCB *p_lcb)
1442 {
1443 UINT32 timeout = 6;
1444 if (p_lcb != NULL){
1445 //1.25 * conn_int *(1+ latency) *32
1446 timeout = (40 * ( 1 + p_lcb->current_used_conn_latency) * p_lcb->current_used_conn_interval + 1.25 * p_lcb->waiting_update_conn_max_interval + 1000) / 1000;
1447 if (timeout < 1){
1448 timeout = 1;
1449 }else if (timeout > 120){
1450 timeout = 120;
1451 }
1452 }
1453 return timeout;
1454 }
1455
1456 /*******************************************************************************
1457 **
1458 ** Function l2cble_credit_based_conn_req
1459 **
1460 ** Description This function sends LE Credit Based Connection Request for
1461 ** LE connection oriented channels.
1462 **
1463 ** Returns void
1464 **
1465 *******************************************************************************/
l2cble_credit_based_conn_req(tL2C_CCB * p_ccb)1466 void l2cble_credit_based_conn_req (tL2C_CCB *p_ccb)
1467 {
1468 if (!p_ccb) {
1469 return;
1470 }
1471
1472 if (p_ccb->p_lcb && p_ccb->p_lcb->transport != BT_TRANSPORT_LE)
1473 {
1474 L2CAP_TRACE_WARNING ("LE link doesn't exist");
1475 return;
1476 }
1477
1478 l2cu_send_peer_ble_credit_based_conn_req (p_ccb);
1479 return;
1480 }
1481
1482 /*******************************************************************************
1483 **
1484 ** Function l2cble_credit_based_conn_res
1485 **
1486 ** Description This function sends LE Credit Based Connection Response for
1487 ** LE connection oriented channels.
1488 **
1489 ** Returns void
1490 **
1491 *******************************************************************************/
l2cble_credit_based_conn_res(tL2C_CCB * p_ccb,UINT16 result)1492 void l2cble_credit_based_conn_res (tL2C_CCB *p_ccb, UINT16 result)
1493 {
1494 if (!p_ccb) {
1495 return;
1496 }
1497
1498 if (p_ccb->p_lcb && p_ccb->p_lcb->transport != BT_TRANSPORT_LE)
1499 {
1500 L2CAP_TRACE_WARNING ("LE link doesn't exist");
1501 return;
1502 }
1503
1504 l2cu_send_peer_ble_credit_based_conn_res (p_ccb, result);
1505 return;
1506 }
1507
1508 /*******************************************************************************
1509 **
1510 ** Function l2cble_send_flow_control_credit
1511 **
1512 ** Description This function sends flow control credits for
1513 ** LE connection oriented channels.
1514 **
1515 ** Returns void
1516 **
1517 *******************************************************************************/
l2cble_send_flow_control_credit(tL2C_CCB * p_ccb,UINT16 credit_value)1518 void l2cble_send_flow_control_credit(tL2C_CCB *p_ccb, UINT16 credit_value)
1519 {
1520 if (!p_ccb) {
1521 return;
1522 }
1523
1524 if (p_ccb->p_lcb && p_ccb->p_lcb->transport != BT_TRANSPORT_LE)
1525 {
1526 L2CAP_TRACE_WARNING ("LE link doesn't exist");
1527 return;
1528 }
1529
1530 l2cu_send_peer_ble_flow_control_credit(p_ccb, credit_value);
1531 return;
1532
1533 }
1534
1535 /*******************************************************************************
1536 **
1537 ** Function l2cble_send_peer_disc_req
1538 **
1539 ** Description This function sends disconnect request
1540 ** to the peer LE device
1541 **
1542 ** Returns void
1543 **
1544 *******************************************************************************/
l2cble_send_peer_disc_req(tL2C_CCB * p_ccb)1545 void l2cble_send_peer_disc_req(tL2C_CCB *p_ccb)
1546 {
1547 L2CAP_TRACE_DEBUG ("%s",__func__);
1548 if (!p_ccb) {
1549 return;
1550 }
1551
1552 if (p_ccb->p_lcb && p_ccb->p_lcb->transport != BT_TRANSPORT_LE)
1553 {
1554 L2CAP_TRACE_WARNING ("LE link doesn't exist");
1555 return;
1556 }
1557
1558 l2cu_send_peer_ble_credit_based_disconn_req(p_ccb);
1559 return;
1560 }
1561
1562 #if (SMP_INCLUDED == TRUE)
1563 /*******************************************************************************
1564 **
1565 ** Function l2cble_sec_comp
1566 **
1567 ** Description This function is called when security procedure for an LE COC
1568 ** link is done
1569 **
1570 ** Returns void
1571 **
1572 *******************************************************************************/
l2cble_sec_comp(BD_ADDR p_bda,tBT_TRANSPORT transport,void * p_ref_data,UINT8 status)1573 void l2cble_sec_comp(BD_ADDR p_bda, tBT_TRANSPORT transport, void *p_ref_data, UINT8 status)
1574 {
1575 tL2C_LCB *p_lcb = l2cu_find_lcb_by_bd_addr(p_bda, BT_TRANSPORT_LE);
1576 tL2CAP_SEC_DATA *p_buf = NULL;
1577 UINT8 sec_flag;
1578 UINT8 sec_act;
1579
1580 if (!p_lcb)
1581 {
1582 L2CAP_TRACE_WARNING ("%s security complete for unknown device", __func__);
1583 return;
1584 }
1585
1586 sec_act = p_lcb->sec_act;
1587 p_lcb->sec_act = 0;
1588
1589 if (!fixed_queue_is_empty(p_lcb->le_sec_pending_q))
1590 {
1591 p_buf = (tL2CAP_SEC_DATA*) fixed_queue_dequeue(p_lcb->le_sec_pending_q, FIXED_QUEUE_MAX_TIMEOUT);
1592 if (!p_buf)
1593 {
1594 L2CAP_TRACE_WARNING ("%s Security complete for request not initiated from L2CAP",
1595 __func__);
1596 return;
1597 }
1598
1599 if (status != BTM_SUCCESS)
1600 {
1601 (*(p_buf->p_callback))(p_bda, BT_TRANSPORT_LE, p_buf->p_ref_data, status);
1602 }
1603 else
1604 {
1605 if (sec_act == BTM_SEC_ENCRYPT_MITM)
1606 {
1607 BTM_GetSecurityFlagsByTransport(p_bda, &sec_flag, transport);
1608 if (sec_flag & BTM_SEC_FLAG_LKEY_AUTHED) {
1609 (*(p_buf->p_callback))(p_bda, BT_TRANSPORT_LE, p_buf->p_ref_data, status);
1610 }
1611 else
1612 {
1613 L2CAP_TRACE_DEBUG ("%s MITM Protection Not present", __func__);
1614 (*(p_buf->p_callback))(p_bda, BT_TRANSPORT_LE, p_buf->p_ref_data,
1615 BTM_FAILED_ON_SECURITY);
1616 }
1617 }
1618 else
1619 {
1620 L2CAP_TRACE_DEBUG ("%s MITM Protection not required sec_act = %d",
1621 __func__, p_lcb->sec_act);
1622
1623 (*(p_buf->p_callback))(p_bda, BT_TRANSPORT_LE, p_buf->p_ref_data, status);
1624 }
1625 }
1626 }
1627 else
1628 {
1629 L2CAP_TRACE_WARNING ("%s Security complete for request not initiated from L2CAP", __func__);
1630 return;
1631 }
1632 osi_free(p_buf);
1633
1634 while (!fixed_queue_is_empty(p_lcb->le_sec_pending_q))
1635 {
1636 p_buf = (tL2CAP_SEC_DATA*) fixed_queue_dequeue(p_lcb->le_sec_pending_q, FIXED_QUEUE_MAX_TIMEOUT);
1637
1638 if (status != BTM_SUCCESS) {
1639 (*(p_buf->p_callback))(p_bda, BT_TRANSPORT_LE, p_buf->p_ref_data, status);
1640 } else {
1641 l2ble_sec_access_req(p_bda, p_buf->psm, p_buf->is_originator,
1642 p_buf->p_callback, p_buf->p_ref_data);
1643 }
1644
1645 osi_free(p_buf);
1646 }
1647 }
1648
1649 /*******************************************************************************
1650 **
1651 ** Function l2ble_sec_access_req
1652 **
1653 ** Description This function is called by LE COC link to meet the
1654 ** security requirement for the link
1655 **
1656 ** Returns TRUE - security procedures are started
1657 ** FALSE - failure
1658 **
1659 *******************************************************************************/
l2ble_sec_access_req(BD_ADDR bd_addr,UINT16 psm,BOOLEAN is_originator,tL2CAP_SEC_CBACK * p_callback,void * p_ref_data)1660 BOOLEAN l2ble_sec_access_req(BD_ADDR bd_addr, UINT16 psm, BOOLEAN is_originator, tL2CAP_SEC_CBACK *p_callback, void *p_ref_data)
1661 {
1662 L2CAP_TRACE_DEBUG ("%s", __func__);
1663 BOOLEAN status;
1664 tL2C_LCB *p_lcb = NULL;
1665
1666 if (!p_callback)
1667 {
1668 L2CAP_TRACE_ERROR("%s No callback function", __func__);
1669 return FALSE;
1670 }
1671
1672 p_lcb = l2cu_find_lcb_by_bd_addr(bd_addr, BT_TRANSPORT_LE);
1673
1674 if (!p_lcb)
1675 {
1676 L2CAP_TRACE_ERROR ("%s Security check for unknown device", __func__);
1677 p_callback(bd_addr, BT_TRANSPORT_LE, p_ref_data, BTM_UNKNOWN_ADDR);
1678 return FALSE;
1679 }
1680
1681 tL2CAP_SEC_DATA *p_buf = (tL2CAP_SEC_DATA*) osi_malloc((UINT16)sizeof(tL2CAP_SEC_DATA));
1682 if (!p_buf)
1683 {
1684 p_callback(bd_addr, BT_TRANSPORT_LE, p_ref_data, BTM_NO_RESOURCES);
1685 return FALSE;
1686 }
1687
1688 p_buf->psm = psm;
1689 p_buf->is_originator = is_originator;
1690 p_buf->p_callback = p_callback;
1691 p_buf->p_ref_data = p_ref_data;
1692 fixed_queue_enqueue(p_lcb->le_sec_pending_q, p_buf, FIXED_QUEUE_MAX_TIMEOUT);
1693 status = btm_ble_start_sec_check(bd_addr, psm, is_originator, &l2cble_sec_comp, p_ref_data);
1694
1695 return status;
1696 }
1697 #endif /* #if (SMP_INCLUDED == TRUE) */
1698 #endif /* (BLE_INCLUDED == TRUE) */
1699 /*******************************************************************************
1700 **
1701 ** Function L2CA_GetDisconnectReason
1702 **
1703 ** Description This function returns the disconnect reason code.
1704 **
1705 ** Returns disconnect reason
1706 **
1707 *******************************************************************************/
L2CA_GetDisconnectReason(BD_ADDR remote_bda,tBT_TRANSPORT transport)1708 UINT16 L2CA_GetDisconnectReason (BD_ADDR remote_bda, tBT_TRANSPORT transport)
1709 {
1710 tL2C_LCB *p_lcb;
1711 UINT16 reason = 0;
1712
1713 if ((p_lcb = l2cu_find_lcb_by_bd_addr (remote_bda, transport)) != NULL) {
1714 reason = p_lcb->disc_reason;
1715 }
1716
1717 L2CAP_TRACE_DEBUG ("L2CA_GetDisconnectReason=%d ", reason);
1718
1719 return reason;
1720 }
1721
