1 /******************************************************************************
3 * Copyright (C) 2009-2012 Broadcom Corporation
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:
9 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 ******************************************************************************/
19 /******************************************************************************
21 * this file contains functions relating to BLE management.
23 ******************************************************************************/
26 #include "bt_target.h"
33 #include "device/include/controller.h"
34 #include "stack_config.h"
35 #include "btif_debug_l2c.h"
38 #if (BLE_INCLUDED == TRUE)
40 extern fixed_queue_t *btu_general_alarm_queue;
42 static void l2cble_start_conn_update (tL2C_LCB *p_lcb);
44 /*******************************************************************************
46 ** Function L2CA_CancelBleConnectReq
48 ** Description Cancel a pending connection attempt to a BLE device.
50 ** Parameters: BD Address of remote
52 ** Return value: TRUE if connection was cancelled
54 *******************************************************************************/
55 BOOLEAN L2CA_CancelBleConnectReq (BD_ADDR rem_bda)
59 /* There can be only one BLE connection request outstanding at a time */
60 if (btm_ble_get_conn_st() == BLE_CONN_IDLE)
62 L2CAP_TRACE_WARNING ("L2CA_CancelBleConnectReq - no connection pending");
66 if (memcmp (rem_bda, l2cb.ble_connecting_bda, BD_ADDR_LEN))
68 L2CAP_TRACE_WARNING ("L2CA_CancelBleConnectReq - different BDA Connecting: %08x%04x Cancel: %08x%04x",
69 (l2cb.ble_connecting_bda[0]<<24)+(l2cb.ble_connecting_bda[1]<<16)+(l2cb.ble_connecting_bda[2]<<8)+l2cb.ble_connecting_bda[3],
70 (l2cb.ble_connecting_bda[4]<<8)+l2cb.ble_connecting_bda[5],
71 (rem_bda[0]<<24)+(rem_bda[1]<<16)+(rem_bda[2]<<8)+rem_bda[3], (rem_bda[4]<<8)+rem_bda[5]);
76 if (btsnd_hcic_ble_create_conn_cancel())
78 p_lcb = l2cu_find_lcb_by_bd_addr(rem_bda, BT_TRANSPORT_LE);
79 /* Do not remove lcb if an LE link is already up as a peripheral */
81 !(p_lcb->link_role == HCI_ROLE_SLAVE && btm_bda_to_acl(rem_bda, BT_TRANSPORT_LE) != NULL))
83 p_lcb->disc_reason = L2CAP_CONN_CANCEL;
84 l2cu_release_lcb (p_lcb);
86 /* update state to be cancel, wait for connection cancel complete */
87 btm_ble_set_conn_st (BLE_CONN_CANCEL);
95 /*******************************************************************************
97 ** Function L2CA_UpdateBleConnParams
99 ** Description Update BLE connection parameters.
101 ** Parameters: BD Address of remote
103 ** Return value: TRUE if update started
105 *******************************************************************************/
106 BOOLEAN L2CA_UpdateBleConnParams (BD_ADDR rem_bda, UINT16 min_int, UINT16 max_int,
107 UINT16 latency, UINT16 timeout)
110 tACL_CONN *p_acl_cb = btm_bda_to_acl(rem_bda, BT_TRANSPORT_LE);
112 /* See if we have a link control block for the remote device */
113 p_lcb = l2cu_find_lcb_by_bd_addr (rem_bda, BT_TRANSPORT_LE);
115 /* If we don't have one, create one and accept the connection. */
116 if (!p_lcb || !p_acl_cb)
118 L2CAP_TRACE_WARNING ("L2CA_UpdateBleConnParams - unknown BD_ADDR %08x%04x",
119 (rem_bda[0]<<24)+(rem_bda[1]<<16)+(rem_bda[2]<<8)+rem_bda[3],
120 (rem_bda[4]<<8)+rem_bda[5]);
124 if (p_lcb->transport != BT_TRANSPORT_LE)
126 L2CAP_TRACE_WARNING ("L2CA_UpdateBleConnParams - BD_ADDR %08x%04x not LE",
127 (rem_bda[0]<<24)+(rem_bda[1]<<16)+(rem_bda[2]<<8)+rem_bda[3],
128 (rem_bda[4]<<8)+rem_bda[5]);
132 p_lcb->min_interval = min_int;
133 p_lcb->max_interval = max_int;
134 p_lcb->latency = latency;
135 p_lcb->timeout = timeout;
136 p_lcb->conn_update_mask |= L2C_BLE_NEW_CONN_PARAM;
138 l2cble_start_conn_update(p_lcb);
144 /*******************************************************************************
146 ** Function L2CA_EnableUpdateBleConnParams
148 ** Description Enable or disable update based on the request from the peer
150 ** Parameters: BD Address of remote
152 ** Return value: TRUE if update started
154 *******************************************************************************/
155 BOOLEAN L2CA_EnableUpdateBleConnParams (BD_ADDR rem_bda, BOOLEAN enable)
157 if (stack_config_get_interface()->get_pts_conn_updates_disabled())
162 /* See if we have a link control block for the remote device */
163 p_lcb = l2cu_find_lcb_by_bd_addr (rem_bda, BT_TRANSPORT_LE);
167 L2CAP_TRACE_WARNING ("L2CA_EnableUpdateBleConnParams - unknown BD_ADDR %08x%04x",
168 (rem_bda[0]<<24)+(rem_bda[1]<<16)+(rem_bda[2]<<8)+rem_bda[3],
169 (rem_bda[4]<<8)+rem_bda[5]);
173 L2CAP_TRACE_API ("%s - BD_ADDR %08x%04x enable %d current upd state 0x%02x",__FUNCTION__,
174 (rem_bda[0]<<24)+(rem_bda[1]<<16)+(rem_bda[2]<<8)+rem_bda[3],
175 (rem_bda[4]<<8)+rem_bda[5], enable, p_lcb->conn_update_mask);
177 if (p_lcb->transport != BT_TRANSPORT_LE)
179 L2CAP_TRACE_WARNING ("%s - BD_ADDR %08x%04x not LE (link role %d)", __FUNCTION__,
180 (rem_bda[0]<<24)+(rem_bda[1]<<16)+(rem_bda[2]<<8)+rem_bda[3],
181 (rem_bda[4]<<8)+rem_bda[5], p_lcb->link_role);
186 p_lcb->conn_update_mask &= ~L2C_BLE_CONN_UPDATE_DISABLE;
188 p_lcb->conn_update_mask |= L2C_BLE_CONN_UPDATE_DISABLE;
190 l2cble_start_conn_update(p_lcb);
196 /*******************************************************************************
198 ** Function L2CA_GetBleConnRole
200 ** Description This function returns the connection role.
202 ** Returns link role.
204 *******************************************************************************/
205 UINT8 L2CA_GetBleConnRole (BD_ADDR bd_addr)
207 UINT8 role = HCI_ROLE_UNKNOWN;
211 if ((p_lcb = l2cu_find_lcb_by_bd_addr (bd_addr, BT_TRANSPORT_LE)) != NULL)
212 role = p_lcb->link_role;
216 /*******************************************************************************
218 ** Function L2CA_GetDisconnectReason
220 ** Description This function returns the disconnect reason code.
222 ** Returns disconnect reason
224 *******************************************************************************/
225 UINT16 L2CA_GetDisconnectReason (BD_ADDR remote_bda, tBT_TRANSPORT transport)
230 if ((p_lcb = l2cu_find_lcb_by_bd_addr (remote_bda, transport)) != NULL)
231 reason = p_lcb->disc_reason;
233 L2CAP_TRACE_DEBUG ("L2CA_GetDisconnectReason=%d ",reason);
238 /*******************************************************************************
240 ** Function l2cble_notify_le_connection
242 ** Description This function notifiy the l2cap connection to the app layer
246 *******************************************************************************/
247 void l2cble_notify_le_connection (BD_ADDR bda)
249 tL2C_LCB *p_lcb = l2cu_find_lcb_by_bd_addr (bda, BT_TRANSPORT_LE);
250 tACL_CONN *p_acl = btm_bda_to_acl(bda, BT_TRANSPORT_LE) ;
253 if (p_lcb != NULL && p_acl != NULL && p_lcb->link_state != LST_CONNECTED)
255 /* update link status */
256 btm_establish_continue(p_acl);
257 /* update l2cap link status and send callback */
258 p_lcb->link_state = LST_CONNECTED;
259 l2cu_process_fixed_chnl_resp (p_lcb);
263 /* For all channels, send the event through their FSMs */
264 for (p_ccb = p_lcb->ccb_queue.p_first_ccb; p_ccb; p_ccb = p_ccb->p_next_ccb)
266 if (p_ccb->chnl_state == CST_CLOSED)
267 l2c_csm_execute (p_ccb, L2CEVT_LP_CONNECT_CFM, NULL);
272 /*******************************************************************************
274 ** Function l2cble_scanner_conn_comp
276 ** Description This function is called when an HCI Connection Complete
277 ** event is received while we are a scanner (so we are master).
281 *******************************************************************************/
282 void l2cble_scanner_conn_comp (UINT16 handle, BD_ADDR bda, tBLE_ADDR_TYPE type,
283 UINT16 conn_interval, UINT16 conn_latency, UINT16 conn_timeout)
286 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_or_alloc_dev (bda);
288 L2CAP_TRACE_DEBUG ("l2cble_scanner_conn_comp: HANDLE=%d addr_type=%d conn_interval=%d slave_latency=%d supervision_tout=%d",
289 handle, type, conn_interval, conn_latency, conn_timeout);
291 l2cb.is_ble_connecting = FALSE;
293 /* See if we have a link control block for the remote device */
294 p_lcb = l2cu_find_lcb_by_bd_addr (bda, BT_TRANSPORT_LE);
296 /* If we don't have one, create one. this is auto connection complete. */
299 p_lcb = l2cu_allocate_lcb (bda, FALSE, BT_TRANSPORT_LE);
302 btm_sec_disconnect (handle, HCI_ERR_NO_CONNECTION);
303 L2CAP_TRACE_ERROR ("l2cble_scanner_conn_comp - failed to allocate LCB");
308 if (!l2cu_initialize_fixed_ccb (p_lcb, L2CAP_ATT_CID, &l2cb.fixed_reg[L2CAP_ATT_CID - L2CAP_FIRST_FIXED_CHNL].fixed_chnl_opts))
310 btm_sec_disconnect (handle, HCI_ERR_NO_CONNECTION);
311 L2CAP_TRACE_WARNING ("l2cble_scanner_conn_comp - LCB but no CCB");
316 else if (p_lcb->link_state != LST_CONNECTING)
318 L2CAP_TRACE_ERROR ("L2CAP got BLE scanner conn_comp in bad state: %d", p_lcb->link_state);
321 alarm_cancel(p_lcb->l2c_lcb_timer);
323 /* Save the handle */
324 p_lcb->handle = handle;
326 /* Connected OK. Change state to connected, we were scanning so we are master */
327 p_lcb->link_role = HCI_ROLE_MASTER;
328 p_lcb->transport = BT_TRANSPORT_LE;
330 /* update link parameter, set slave link as non-spec default upon link up */
331 p_lcb->min_interval = p_lcb->max_interval = conn_interval;
332 p_lcb->timeout = conn_timeout;
333 p_lcb->latency = conn_latency;
334 p_lcb->conn_update_mask = L2C_BLE_NOT_DEFAULT_PARAM;
336 /* Tell BTM Acl management about the link */
337 btm_acl_created (bda, NULL, p_dev_rec->sec_bd_name, handle, p_lcb->link_role, BT_TRANSPORT_LE);
339 p_lcb->peer_chnl_mask[0] = L2CAP_FIXED_CHNL_ATT_BIT | L2CAP_FIXED_CHNL_BLE_SIG_BIT | L2CAP_FIXED_CHNL_SMP_BIT;
341 btm_ble_set_conn_st(BLE_CONN_IDLE);
343 #if BLE_PRIVACY_SPT == TRUE
344 btm_ble_disable_resolving_list(BTM_BLE_RL_INIT, TRUE);
349 /*******************************************************************************
351 ** Function l2cble_advertiser_conn_comp
353 ** Description This function is called when an HCI Connection Complete
354 ** event is received while we are an advertiser (so we are slave).
358 *******************************************************************************/
359 void l2cble_advertiser_conn_comp (UINT16 handle, BD_ADDR bda, tBLE_ADDR_TYPE type,
360 UINT16 conn_interval, UINT16 conn_latency, UINT16 conn_timeout)
363 tBTM_SEC_DEV_REC *p_dev_rec;
365 UNUSED(conn_interval);
366 UNUSED(conn_latency);
367 UNUSED(conn_timeout);
369 /* See if we have a link control block for the remote device */
370 p_lcb = l2cu_find_lcb_by_bd_addr (bda, BT_TRANSPORT_LE);
372 /* If we don't have one, create one and accept the connection. */
375 p_lcb = l2cu_allocate_lcb (bda, FALSE, BT_TRANSPORT_LE);
378 btm_sec_disconnect (handle, HCI_ERR_NO_CONNECTION);
379 L2CAP_TRACE_ERROR ("l2cble_advertiser_conn_comp - failed to allocate LCB");
384 if (!l2cu_initialize_fixed_ccb (p_lcb, L2CAP_ATT_CID, &l2cb.fixed_reg[L2CAP_ATT_CID - L2CAP_FIRST_FIXED_CHNL].fixed_chnl_opts))
386 btm_sec_disconnect (handle, HCI_ERR_NO_CONNECTION);
387 L2CAP_TRACE_WARNING ("l2cble_scanner_conn_comp - LCB but no CCB");
393 /* Save the handle */
394 p_lcb->handle = handle;
396 /* Connected OK. Change state to connected, we were advertising, so we are slave */
397 p_lcb->link_role = HCI_ROLE_SLAVE;
398 p_lcb->transport = BT_TRANSPORT_LE;
400 /* update link parameter, set slave link as non-spec default upon link up */
401 p_lcb->min_interval = p_lcb->max_interval = conn_interval;
402 p_lcb->timeout = conn_timeout;
403 p_lcb->latency = conn_latency;
404 p_lcb->conn_update_mask = L2C_BLE_NOT_DEFAULT_PARAM;
406 /* Tell BTM Acl management about the link */
407 p_dev_rec = btm_find_or_alloc_dev (bda);
409 btm_acl_created (bda, NULL, p_dev_rec->sec_bd_name, handle, p_lcb->link_role, BT_TRANSPORT_LE);
411 #if BLE_PRIVACY_SPT == TRUE
412 btm_ble_disable_resolving_list(BTM_BLE_RL_ADV, TRUE);
415 p_lcb->peer_chnl_mask[0] = L2CAP_FIXED_CHNL_ATT_BIT | L2CAP_FIXED_CHNL_BLE_SIG_BIT | L2CAP_FIXED_CHNL_SMP_BIT;
417 if (!HCI_LE_SLAVE_INIT_FEAT_EXC_SUPPORTED(controller_get_interface()->get_features_ble()->as_array))
419 p_lcb->link_state = LST_CONNECTED;
420 l2cu_process_fixed_chnl_resp (p_lcb);
423 /* when adv and initiating are both active, cancel the direct connection */
424 if (l2cb.is_ble_connecting && memcmp(bda, l2cb.ble_connecting_bda, BD_ADDR_LEN) == 0)
426 L2CA_CancelBleConnectReq(bda);
430 /*******************************************************************************
432 ** Function l2cble_conn_comp
434 ** Description This function is called when an HCI Connection Complete
435 ** event is received.
439 *******************************************************************************/
440 void l2cble_conn_comp(UINT16 handle, UINT8 role, BD_ADDR bda, tBLE_ADDR_TYPE type,
441 UINT16 conn_interval, UINT16 conn_latency, UINT16 conn_timeout)
443 btm_ble_update_link_topology_mask(role, TRUE);
445 if (role == HCI_ROLE_MASTER)
447 l2cble_scanner_conn_comp(handle, bda, type, conn_interval, conn_latency, conn_timeout);
451 l2cble_advertiser_conn_comp(handle, bda, type, conn_interval, conn_latency, conn_timeout);
455 /*******************************************************************************
457 ** Function l2cble_start_conn_update
459 ** Description start BLE connection parameter update process based on status
461 ** Parameters: lcb : l2cap link control block
463 ** Return value: none
465 *******************************************************************************/
466 static void l2cble_start_conn_update (tL2C_LCB *p_lcb)
468 UINT16 min_conn_int, max_conn_int, slave_latency, supervision_tout;
469 tACL_CONN *p_acl_cb = btm_bda_to_acl(p_lcb->remote_bd_addr, BT_TRANSPORT_LE);
471 // TODO(armansito): The return value of this call wasn't being used but the
472 // logic of this function might be depending on its side effects. We should
473 // verify if this call is needed at all and remove it otherwise.
474 btm_find_or_alloc_dev(p_lcb->remote_bd_addr);
476 if (p_lcb->conn_update_mask & L2C_BLE_UPDATE_PENDING) return;
478 if (p_lcb->conn_update_mask & L2C_BLE_CONN_UPDATE_DISABLE)
480 /* application requests to disable parameters update.
481 If parameters are already updated, lets set them
482 up to what has been requested during connection establishement */
483 if (p_lcb->conn_update_mask & L2C_BLE_NOT_DEFAULT_PARAM &&
484 /* current connection interval is greater than default min */
485 p_lcb->min_interval > BTM_BLE_CONN_INT_MIN)
487 /* use 7.5 ms as fast connection parameter, 0 slave latency */
488 min_conn_int = max_conn_int = BTM_BLE_CONN_INT_MIN;
489 slave_latency = BTM_BLE_CONN_SLAVE_LATENCY_DEF;
490 supervision_tout = BTM_BLE_CONN_TIMEOUT_DEF;
492 /* if both side 4.1, or we are master device, send HCI command */
493 if (p_lcb->link_role == HCI_ROLE_MASTER
494 #if (defined BLE_LLT_INCLUDED) && (BLE_LLT_INCLUDED == TRUE)
495 || (HCI_LE_CONN_PARAM_REQ_SUPPORTED(controller_get_interface()->get_features_ble()->as_array) &&
496 HCI_LE_CONN_PARAM_REQ_SUPPORTED(p_acl_cb->peer_le_features))
500 btsnd_hcic_ble_upd_ll_conn_params(p_lcb->handle, min_conn_int, max_conn_int,
501 slave_latency, supervision_tout, 0, 0);
502 p_lcb->conn_update_mask |= L2C_BLE_UPDATE_PENDING;
506 l2cu_send_peer_ble_par_req (p_lcb, min_conn_int, max_conn_int, slave_latency, supervision_tout);
508 p_lcb->conn_update_mask &= ~L2C_BLE_NOT_DEFAULT_PARAM;
509 p_lcb->conn_update_mask |= L2C_BLE_NEW_CONN_PARAM;
514 /* application allows to do update, if we were delaying one do it now */
515 if (p_lcb->conn_update_mask & L2C_BLE_NEW_CONN_PARAM)
517 /* if both side 4.1, or we are master device, send HCI command */
518 if (p_lcb->link_role == HCI_ROLE_MASTER
519 #if (defined BLE_LLT_INCLUDED) && (BLE_LLT_INCLUDED == TRUE)
520 || (HCI_LE_CONN_PARAM_REQ_SUPPORTED(controller_get_interface()->get_features_ble()->as_array) &&
521 HCI_LE_CONN_PARAM_REQ_SUPPORTED(p_acl_cb->peer_le_features))
525 btsnd_hcic_ble_upd_ll_conn_params(p_lcb->handle, p_lcb->min_interval,
526 p_lcb->max_interval, p_lcb->latency, p_lcb->timeout, 0, 0);
527 p_lcb->conn_update_mask |= L2C_BLE_UPDATE_PENDING;
531 l2cu_send_peer_ble_par_req (p_lcb, p_lcb->min_interval, p_lcb->max_interval,
532 p_lcb->latency, p_lcb->timeout);
534 p_lcb->conn_update_mask &= ~L2C_BLE_NEW_CONN_PARAM;
535 p_lcb->conn_update_mask |= L2C_BLE_NOT_DEFAULT_PARAM;
539 /* Record the BLE connection update request. */
540 if (p_lcb->conn_update_mask & L2C_BLE_UPDATE_PENDING) {
542 bdcpy(bd_addr.address, p_lcb->remote_bd_addr);
543 btif_debug_ble_connection_update_request(bd_addr, min_conn_int, max_conn_int, slave_latency,
548 /*******************************************************************************
550 ** Function l2cble_process_conn_update_evt
552 ** Description This function enables the connection update request from remote
553 ** after a successful connection update response is received.
557 *******************************************************************************/
558 void l2cble_process_conn_update_evt (UINT16 handle, UINT8 status,
559 UINT16 interval, UINT16 latency, UINT16 timeout)
561 L2CAP_TRACE_DEBUG("%s", __func__);
563 /* See if we have a link control block for the remote device */
564 tL2C_LCB *p_lcb = l2cu_find_lcb_by_handle(handle);
567 L2CAP_TRACE_WARNING("%s: Invalid handle: %d", __func__, handle);
571 p_lcb->conn_update_mask &= ~L2C_BLE_UPDATE_PENDING;
573 if (status != HCI_SUCCESS)
575 L2CAP_TRACE_WARNING("%s: Error status: %d", __func__, status);
578 l2cble_start_conn_update(p_lcb);
580 /* Record the BLE connection update response. */
582 bdcpy(bd_addr.address, p_lcb->remote_bd_addr);
583 btif_debug_ble_connection_update_response(bd_addr, status, interval,
586 L2CAP_TRACE_DEBUG("%s: conn_update_mask=%d", __func__, p_lcb->conn_update_mask);
589 /*******************************************************************************
591 ** Function l2cble_process_sig_cmd
593 ** Description This function is called when a signalling packet is received
594 ** on the BLE signalling CID
598 *******************************************************************************/
599 void l2cble_process_sig_cmd (tL2C_LCB *p_lcb, UINT8 *p, UINT16 pkt_len)
604 UINT16 min_interval, max_interval, latency, timeout;
605 tL2C_CONN_INFO con_info;
606 UINT16 lcid = 0, rcid = 0, mtu = 0, mps = 0, initial_credit = 0;
607 tL2C_CCB *p_ccb = NULL, *temp_p_ccb = NULL;
610 p_pkt_end = p + pkt_len;
612 if (p + 4 > p_pkt_end)
614 android_errorWriteLog(0x534e4554, "80261585");
615 L2CAP_TRACE_WARNING ("%s bad packet length", __func__);
619 STREAM_TO_UINT8 (cmd_code, p);
620 STREAM_TO_UINT8 (id, p);
621 STREAM_TO_UINT16 (cmd_len, p);
623 /* Check command length does not exceed packet length */
624 if ((p + cmd_len) > p_pkt_end)
626 L2CAP_TRACE_WARNING ("L2CAP - LE - format error, pkt_len: %d cmd_len: %d code: %d", pkt_len, cmd_len, cmd_code);
632 case L2CAP_CMD_REJECT:
636 case L2CAP_CMD_ECHO_REQ:
637 case L2CAP_CMD_ECHO_RSP:
638 case L2CAP_CMD_INFO_RSP:
639 case L2CAP_CMD_INFO_REQ:
640 l2cu_send_peer_cmd_reject (p_lcb, L2CAP_CMD_REJ_NOT_UNDERSTOOD, id, 0, 0);
643 case L2CAP_CMD_BLE_UPDATE_REQ:
644 if (p + 8 > p_pkt_end)
646 android_errorWriteLog(0x534e4554, "80261585");
647 L2CAP_TRACE_WARNING ("%s bad update_req packet length", __func__);
650 STREAM_TO_UINT16 (min_interval, p); /* 0x0006 - 0x0C80 */
651 STREAM_TO_UINT16 (max_interval, p); /* 0x0006 - 0x0C80 */
652 STREAM_TO_UINT16 (latency, p); /* 0x0000 - 0x03E8 */
653 STREAM_TO_UINT16 (timeout, p); /* 0x000A - 0x0C80 */
654 /* If we are a master, the slave wants to update the parameters */
655 if (p_lcb->link_role == HCI_ROLE_MASTER)
657 if (min_interval < BTM_BLE_CONN_INT_MIN_LIMIT)
658 min_interval = BTM_BLE_CONN_INT_MIN_LIMIT;
660 if (min_interval < BTM_BLE_CONN_INT_MIN || min_interval > BTM_BLE_CONN_INT_MAX ||
661 max_interval < BTM_BLE_CONN_INT_MIN || max_interval > BTM_BLE_CONN_INT_MAX ||
662 latency > BTM_BLE_CONN_LATENCY_MAX ||
663 /*(timeout >= max_interval && latency > (timeout * 10/(max_interval * 1.25) - 1)) ||*/
664 timeout < BTM_BLE_CONN_SUP_TOUT_MIN || timeout > BTM_BLE_CONN_SUP_TOUT_MAX ||
665 max_interval < min_interval)
667 l2cu_send_peer_ble_par_rsp (p_lcb, L2CAP_CFG_UNACCEPTABLE_PARAMS, id);
672 l2cu_send_peer_ble_par_rsp (p_lcb, L2CAP_CFG_OK, id);
674 p_lcb->min_interval = min_interval;
675 p_lcb->max_interval = max_interval;
676 p_lcb->latency = latency;
677 p_lcb->timeout = timeout;
678 p_lcb->conn_update_mask |= L2C_BLE_NEW_CONN_PARAM;
680 l2cble_start_conn_update(p_lcb);
684 l2cu_send_peer_cmd_reject (p_lcb, L2CAP_CMD_REJ_NOT_UNDERSTOOD, id, 0, 0);
687 case L2CAP_CMD_BLE_UPDATE_RSP:
691 case L2CAP_CMD_BLE_CREDIT_BASED_CONN_REQ:
692 if (p + 10 > p_pkt_end)
694 android_errorWriteLog(0x534e4554, "80261585");
695 L2CAP_TRACE_WARNING ("%s bad update_req packet length", __func__);
698 STREAM_TO_UINT16 (con_info.psm, p);
699 STREAM_TO_UINT16 (rcid, p);
700 STREAM_TO_UINT16 (mtu, p);
701 STREAM_TO_UINT16 (mps, p);
702 STREAM_TO_UINT16 (initial_credit, p);
704 L2CAP_TRACE_DEBUG ("Recv L2CAP_CMD_BLE_CREDIT_BASED_CONN_REQ with "
707 "initial credit = %d", mtu, mps, initial_credit);
709 if ((p_rcb = l2cu_find_ble_rcb_by_psm (con_info.psm)) == NULL)
711 L2CAP_TRACE_WARNING ("L2CAP - rcvd conn req for unknown PSM: 0x%04x", con_info.psm);
712 l2cu_reject_ble_connection (p_lcb, id, L2CAP_LE_NO_PSM);
717 if (!p_rcb->api.pL2CA_ConnectInd_Cb)
719 L2CAP_TRACE_WARNING ("L2CAP - rcvd conn req for outgoing-only connection PSM: %d", con_info.psm);
720 l2cu_reject_ble_connection (p_lcb, id, L2CAP_CONN_NO_PSM);
725 /* Allocate a ccb for this.*/
726 if ((p_ccb = l2cu_allocate_ccb (p_lcb, 0)) == NULL)
728 L2CAP_TRACE_ERROR ("L2CAP - unable to allocate CCB");
729 l2cu_reject_ble_connection (p_lcb, id, L2CAP_CONN_NO_RESOURCES);
733 /* validate the parameters */
734 if (mtu < L2CAP_LE_MIN_MTU || mps < L2CAP_LE_MIN_MPS || mps > L2CAP_LE_MAX_MPS)
736 L2CAP_TRACE_ERROR ("L2CAP don't like the params");
737 l2cu_reject_ble_connection (p_lcb, id, L2CAP_CONN_NO_RESOURCES);
741 p_ccb->remote_id = id;
742 p_ccb->p_rcb = p_rcb;
743 p_ccb->remote_cid = rcid;
745 p_ccb->peer_conn_cfg.mtu = mtu;
746 p_ccb->peer_conn_cfg.mps = mps;
747 p_ccb->peer_conn_cfg.credits = initial_credit;
750 p_ccb->ble_sdu = NULL;
751 p_ccb->ble_sdu_length = 0;
752 p_ccb->is_first_seg = TRUE;
753 p_ccb->peer_cfg.fcr.mode = L2CAP_FCR_LE_COC_MODE;
755 l2c_csm_execute(p_ccb, L2CEVT_L2CAP_CONNECT_REQ, &con_info);
758 case L2CAP_CMD_BLE_CREDIT_BASED_CONN_RES:
759 L2CAP_TRACE_DEBUG ("Recv L2CAP_CMD_BLE_CREDIT_BASED_CONN_RES");
760 /* For all channels, see whose identifier matches this id */
761 for (temp_p_ccb = p_lcb->ccb_queue.p_first_ccb; temp_p_ccb; temp_p_ccb = temp_p_ccb->p_next_ccb)
763 if (temp_p_ccb->local_id == id)
771 L2CAP_TRACE_DEBUG ("I remember the connection req");
772 if (p + 10 > p_pkt_end)
774 android_errorWriteLog(0x534e4554, "80261585");
775 L2CAP_TRACE_WARNING ("%s bad update_req packet length", __func__);
778 STREAM_TO_UINT16 (p_ccb->remote_cid, p);
779 STREAM_TO_UINT16 (p_ccb->peer_conn_cfg.mtu, p);
780 STREAM_TO_UINT16 (p_ccb->peer_conn_cfg.mps, p);
781 STREAM_TO_UINT16 (p_ccb->peer_conn_cfg.credits, p);
782 STREAM_TO_UINT16 (con_info.l2cap_result, p);
783 con_info.remote_cid = p_ccb->remote_cid;
785 L2CAP_TRACE_DEBUG ("remote_cid = %d, "
788 "initial_credit = %d, "
789 "con_info.l2cap_result = %d",
790 p_ccb->remote_cid, p_ccb->peer_conn_cfg.mtu, p_ccb->peer_conn_cfg.mps,
791 p_ccb->peer_conn_cfg.credits, con_info.l2cap_result);
793 /* validate the parameters */
794 if (p_ccb->peer_conn_cfg.mtu < L2CAP_LE_MIN_MTU ||
795 p_ccb->peer_conn_cfg.mps < L2CAP_LE_MIN_MPS ||
796 p_ccb->peer_conn_cfg.mps > L2CAP_LE_MAX_MPS)
798 L2CAP_TRACE_ERROR ("L2CAP don't like the params");
799 con_info.l2cap_result = L2CAP_LE_NO_RESOURCES;
800 l2c_csm_execute(p_ccb, L2CEVT_L2CAP_CONNECT_RSP_NEG, &con_info);
804 p_ccb->tx_mps = p_ccb->peer_conn_cfg.mps;
805 p_ccb->ble_sdu = NULL;
806 p_ccb->ble_sdu_length = 0;
807 p_ccb->is_first_seg = TRUE;
808 p_ccb->peer_cfg.fcr.mode = L2CAP_FCR_LE_COC_MODE;
810 if (con_info.l2cap_result == L2CAP_LE_CONN_OK)
811 l2c_csm_execute(p_ccb, L2CEVT_L2CAP_CONNECT_RSP, &con_info);
813 l2c_csm_execute(p_ccb, L2CEVT_L2CAP_CONNECT_RSP_NEG, &con_info);
817 L2CAP_TRACE_DEBUG ("I DO NOT remember the connection req");
818 con_info.l2cap_result = L2CAP_LE_INVALID_SOURCE_CID;
819 l2c_csm_execute(p_ccb, L2CEVT_L2CAP_CONNECT_RSP_NEG, &con_info);
823 case L2CAP_CMD_BLE_FLOW_CTRL_CREDIT:
824 if (p + 4 > p_pkt_end)
826 android_errorWriteLog(0x534e4554, "80261585");
827 L2CAP_TRACE_WARNING ("%s bad update_req packet length", __func__);
830 STREAM_TO_UINT16(lcid, p);
831 if((p_ccb = l2cu_find_ccb_by_remote_cid(p_lcb, lcid)) == NULL)
833 L2CAP_TRACE_DEBUG ("%s Credit received for unknown channel id %d", __func__, lcid);
837 STREAM_TO_UINT16(credit ,p);
838 l2c_csm_execute(p_ccb, L2CEVT_L2CAP_RECV_FLOW_CONTROL_CREDIT, &credit);
839 L2CAP_TRACE_DEBUG ("%s Credit received", __func__);
842 case L2CAP_CMD_DISC_REQ:
843 if (p + 4 >= p_pkt_end) {
844 android_errorWriteLog(0x534e4554, "63146237");
847 STREAM_TO_UINT16 (lcid, p);
848 STREAM_TO_UINT16 (rcid, p);
850 if ((p_ccb = l2cu_find_ccb_by_cid (p_lcb, lcid)) != NULL)
852 if (p_ccb->remote_cid == rcid)
854 p_ccb->remote_id = id;
855 l2c_csm_execute (p_ccb, L2CEVT_L2CAP_DISCONNECT_REQ, NULL);
859 l2cu_send_peer_disc_rsp (p_lcb, id, lcid, rcid);
863 case L2CAP_CMD_DISC_RSP:
864 if (p + 4 > p_pkt_end)
866 android_errorWriteLog(0x534e4554, "80261585");
867 L2CAP_TRACE_WARNING ("%s bad update_req packet length", __func__);
870 STREAM_TO_UINT16 (rcid, p);
871 STREAM_TO_UINT16 (lcid, p);
873 if ((p_ccb = l2cu_find_ccb_by_cid (p_lcb, lcid)) != NULL)
875 if ((p_ccb->remote_cid == rcid) && (p_ccb->local_id == id))
876 l2c_csm_execute (p_ccb, L2CEVT_L2CAP_DISCONNECT_RSP, NULL);
881 L2CAP_TRACE_WARNING ("L2CAP - LE - unknown cmd code: %d", cmd_code);
882 l2cu_send_peer_cmd_reject (p_lcb, L2CAP_CMD_REJ_NOT_UNDERSTOOD, id, 0, 0);
887 /*******************************************************************************
889 ** Function l2cble_init_direct_conn
891 ** Description This function is to initate a direct connection
893 ** Returns TRUE connection initiated, FALSE otherwise.
895 *******************************************************************************/
896 BOOLEAN l2cble_init_direct_conn (tL2C_LCB *p_lcb)
898 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_or_alloc_dev (p_lcb->remote_bd_addr);
899 tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb;
903 UINT8 peer_addr_type = BLE_ADDR_PUBLIC;
904 UINT8 own_addr_type = BLE_ADDR_PUBLIC;
906 /* There can be only one BLE connection request outstanding at a time */
907 if (p_dev_rec == NULL)
909 L2CAP_TRACE_WARNING ("unknown device, can not initate connection");
913 scan_int = (p_cb->scan_int == BTM_BLE_SCAN_PARAM_UNDEF) ? BTM_BLE_SCAN_FAST_INT : p_cb->scan_int;
914 scan_win = (p_cb->scan_win == BTM_BLE_SCAN_PARAM_UNDEF) ? BTM_BLE_SCAN_FAST_WIN : p_cb->scan_win;
916 peer_addr_type = p_lcb->ble_addr_type;
917 memcpy(peer_addr, p_lcb->remote_bd_addr, BD_ADDR_LEN);
919 #if ( (defined BLE_PRIVACY_SPT) && (BLE_PRIVACY_SPT == TRUE))
920 own_addr_type = btm_cb.ble_ctr_cb.privacy_mode ? BLE_ADDR_RANDOM : BLE_ADDR_PUBLIC;
921 if (p_dev_rec->ble.in_controller_list & BTM_RESOLVING_LIST_BIT)
923 if (btm_cb.ble_ctr_cb.privacy_mode >= BTM_PRIVACY_1_2)
924 own_addr_type |= BLE_ADDR_TYPE_ID_BIT;
926 btm_ble_enable_resolving_list(BTM_BLE_RL_INIT);
927 btm_random_pseudo_to_identity_addr(peer_addr, &peer_addr_type);
929 btm_ble_disable_resolving_list(BTM_BLE_RL_INIT, TRUE);
931 // If we have a current RPA, use that instead.
932 if (!bdaddr_is_empty((const bt_bdaddr_t *)p_dev_rec->ble.cur_rand_addr)) {
933 memcpy(peer_addr, p_dev_rec->ble.cur_rand_addr, BD_ADDR_LEN);
938 if (!btm_ble_topology_check(BTM_BLE_STATE_INIT))
940 l2cu_release_lcb (p_lcb);
941 L2CAP_TRACE_ERROR("initate direct connection fail, topology limitation");
945 if (!btsnd_hcic_ble_create_ll_conn (scan_int,/* UINT16 scan_int */
946 scan_win, /* UINT16 scan_win */
947 FALSE, /* UINT8 white_list */
948 peer_addr_type, /* UINT8 addr_type_peer */
949 peer_addr, /* BD_ADDR bda_peer */
950 own_addr_type, /* UINT8 addr_type_own */
951 (UINT16) ((p_dev_rec->conn_params.min_conn_int != BTM_BLE_CONN_PARAM_UNDEF) ?
952 p_dev_rec->conn_params.min_conn_int : BTM_BLE_CONN_INT_MIN_DEF), /* UINT16 conn_int_min */
953 (UINT16) ((p_dev_rec->conn_params.max_conn_int != BTM_BLE_CONN_PARAM_UNDEF) ?
954 p_dev_rec->conn_params.max_conn_int : BTM_BLE_CONN_INT_MAX_DEF), /* UINT16 conn_int_max */
955 (UINT16) ((p_dev_rec->conn_params.slave_latency != BTM_BLE_CONN_PARAM_UNDEF) ?
956 p_dev_rec->conn_params.slave_latency : BTM_BLE_CONN_SLAVE_LATENCY_DEF), /* UINT16 conn_latency */
957 (UINT16) ((p_dev_rec->conn_params.supervision_tout != BTM_BLE_CONN_PARAM_UNDEF) ?
958 p_dev_rec->conn_params.supervision_tout : BTM_BLE_CONN_TIMEOUT_DEF), /* conn_timeout */
959 0, /* UINT16 min_len */
960 0)) /* UINT16 max_len */
962 l2cu_release_lcb (p_lcb);
963 L2CAP_TRACE_ERROR("initate direct connection fail, no resources");
968 p_lcb->link_state = LST_CONNECTING;
969 l2cb.is_ble_connecting = TRUE;
970 memcpy (l2cb.ble_connecting_bda, p_lcb->remote_bd_addr, BD_ADDR_LEN);
971 alarm_set_on_queue(p_lcb->l2c_lcb_timer,
972 L2CAP_BLE_LINK_CONNECT_TIMEOUT_MS,
973 l2c_lcb_timer_timeout, p_lcb,
974 btu_general_alarm_queue);
975 btm_ble_set_conn_st (BLE_DIR_CONN);
981 /*******************************************************************************
983 ** Function l2cble_create_conn
985 ** Description This function initiates an acl connection via HCI
987 ** Returns TRUE if successful, FALSE if connection not started.
989 *******************************************************************************/
990 BOOLEAN l2cble_create_conn (tL2C_LCB *p_lcb)
992 tBTM_BLE_CONN_ST conn_st = btm_ble_get_conn_st();
995 /* There can be only one BLE connection request outstanding at a time */
996 if (conn_st == BLE_CONN_IDLE)
998 rt = l2cble_init_direct_conn(p_lcb);
1002 L2CAP_TRACE_WARNING ("L2CAP - LE - cannot start new connection at conn st: %d", conn_st);
1004 btm_ble_enqueue_direct_conn_req(p_lcb);
1006 if (conn_st == BLE_BG_CONN)
1007 btm_ble_suspend_bg_conn();
1014 /*******************************************************************************
1016 ** Function l2c_link_processs_ble_num_bufs
1018 ** Description This function is called when a "controller buffer size"
1019 ** event is first received from the controller. It updates
1020 ** the L2CAP values.
1024 *******************************************************************************/
1025 void l2c_link_processs_ble_num_bufs (UINT16 num_lm_ble_bufs)
1027 if (num_lm_ble_bufs == 0)
1029 num_lm_ble_bufs = L2C_DEF_NUM_BLE_BUF_SHARED;
1030 l2cb.num_lm_acl_bufs -= L2C_DEF_NUM_BLE_BUF_SHARED;
1033 l2cb.num_lm_ble_bufs = l2cb.controller_le_xmit_window = num_lm_ble_bufs;
1036 /*******************************************************************************
1038 ** Function l2c_ble_link_adjust_allocation
1040 ** Description This function is called when a link is created or removed
1041 ** to calculate the amount of packets each link may send to
1042 ** the HCI without an ack coming back.
1044 ** Currently, this is a simple allocation, dividing the
1045 ** number of Controller Packets by the number of links. In
1046 ** the future, QOS configuration should be examined.
1050 *******************************************************************************/
1051 void l2c_ble_link_adjust_allocation (void)
1053 UINT16 qq, yy, qq_remainder;
1055 UINT16 hi_quota, low_quota;
1056 UINT16 num_lowpri_links = 0;
1057 UINT16 num_hipri_links = 0;
1058 UINT16 controller_xmit_quota = l2cb.num_lm_ble_bufs;
1059 UINT16 high_pri_link_quota = L2CAP_HIGH_PRI_MIN_XMIT_QUOTA_A;
1061 /* If no links active, reset buffer quotas and controller buffers */
1062 if (l2cb.num_ble_links_active == 0)
1064 l2cb.controller_le_xmit_window = l2cb.num_lm_ble_bufs;
1065 l2cb.ble_round_robin_quota = l2cb.ble_round_robin_unacked = 0;
1069 /* First, count the links */
1070 for (yy = 0, p_lcb = &l2cb.lcb_pool[0]; yy < MAX_L2CAP_LINKS; yy++, p_lcb++)
1072 if (p_lcb->in_use && p_lcb->transport == BT_TRANSPORT_LE)
1074 if (p_lcb->acl_priority == L2CAP_PRIORITY_HIGH)
1081 /* now adjust high priority link quota */
1082 low_quota = num_lowpri_links ? 1 : 0;
1083 while ( (num_hipri_links * high_pri_link_quota + low_quota) > controller_xmit_quota )
1084 high_pri_link_quota--;
1087 /* Work out the xmit quota and buffer quota high and low priorities */
1088 hi_quota = num_hipri_links * high_pri_link_quota;
1089 low_quota = (hi_quota < controller_xmit_quota) ? controller_xmit_quota - hi_quota : 1;
1091 /* Work out and save the HCI xmit quota for each low priority link */
1093 /* If each low priority link cannot have at least one buffer */
1094 if (num_lowpri_links > low_quota)
1096 l2cb.ble_round_robin_quota = low_quota;
1097 qq = qq_remainder = 0;
1099 /* If each low priority link can have at least one buffer */
1100 else if (num_lowpri_links > 0)
1102 l2cb.ble_round_robin_quota = 0;
1103 l2cb.ble_round_robin_unacked = 0;
1104 qq = low_quota / num_lowpri_links;
1105 qq_remainder = low_quota % num_lowpri_links;
1107 /* If no low priority link */
1110 l2cb.ble_round_robin_quota = 0;
1111 l2cb.ble_round_robin_unacked = 0;
1112 qq = qq_remainder = 0;
1114 L2CAP_TRACE_EVENT ("l2c_ble_link_adjust_allocation num_hipri: %u num_lowpri: %u low_quota: %u round_robin_quota: %u qq: %u",
1115 num_hipri_links, num_lowpri_links, low_quota,
1116 l2cb.ble_round_robin_quota, qq);
1118 /* Now, assign the quotas to each link */
1119 for (yy = 0, p_lcb = &l2cb.lcb_pool[0]; yy < MAX_L2CAP_LINKS; yy++, p_lcb++)
1121 if (p_lcb->in_use && p_lcb->transport == BT_TRANSPORT_LE)
1123 if (p_lcb->acl_priority == L2CAP_PRIORITY_HIGH)
1125 p_lcb->link_xmit_quota = high_pri_link_quota;
1129 /* Safety check in case we switched to round-robin with something outstanding */
1130 /* if sent_not_acked is added into round_robin_unacked then don't add it again */
1131 /* l2cap keeps updating sent_not_acked for exiting from round robin */
1132 if (( p_lcb->link_xmit_quota > 0 )&&( qq == 0 ))
1133 l2cb.ble_round_robin_unacked += p_lcb->sent_not_acked;
1135 p_lcb->link_xmit_quota = qq;
1136 if (qq_remainder > 0)
1138 p_lcb->link_xmit_quota++;
1143 L2CAP_TRACE_EVENT("l2c_ble_link_adjust_allocation LCB %d Priority: %d XmitQuota: %d",
1144 yy, p_lcb->acl_priority, p_lcb->link_xmit_quota);
1146 L2CAP_TRACE_EVENT(" SentNotAcked: %d RRUnacked: %d",
1147 p_lcb->sent_not_acked, l2cb.round_robin_unacked);
1149 /* There is a special case where we have readjusted the link quotas and */
1150 /* this link may have sent anything but some other link sent packets so */
1151 /* so we may need a timer to kick off this link's transmissions. */
1152 if ( (p_lcb->link_state == LST_CONNECTED)
1153 && (!list_is_empty(p_lcb->link_xmit_data_q))
1154 && (p_lcb->sent_not_acked < p_lcb->link_xmit_quota) ) {
1155 alarm_set_on_queue(p_lcb->l2c_lcb_timer,
1156 L2CAP_LINK_FLOW_CONTROL_TIMEOUT_MS,
1157 l2c_lcb_timer_timeout, p_lcb,
1158 btu_general_alarm_queue);
1164 #if (defined BLE_LLT_INCLUDED) && (BLE_LLT_INCLUDED == TRUE)
1165 /*******************************************************************************
1167 ** Function l2cble_process_rc_param_request_evt
1169 ** Description process LE Remote Connection Parameter Request Event.
1173 *******************************************************************************/
1174 void l2cble_process_rc_param_request_evt(UINT16 handle, UINT16 int_min, UINT16 int_max,
1175 UINT16 latency, UINT16 timeout)
1177 tL2C_LCB *p_lcb = l2cu_find_lcb_by_handle (handle);
1181 p_lcb->min_interval = int_min;
1182 p_lcb->max_interval = int_max;
1183 p_lcb->latency = latency;
1184 p_lcb->timeout = timeout;
1186 /* if update is enabled, always accept connection parameter update */
1187 if ((p_lcb->conn_update_mask & L2C_BLE_CONN_UPDATE_DISABLE) == 0)
1189 btsnd_hcic_ble_rc_param_req_reply(handle, int_min, int_max, latency, timeout, 0, 0);
1193 L2CAP_TRACE_EVENT ("L2CAP - LE - update currently disabled");
1194 p_lcb->conn_update_mask |= L2C_BLE_NEW_CONN_PARAM;
1195 btsnd_hcic_ble_rc_param_req_neg_reply (handle,HCI_ERR_UNACCEPT_CONN_INTERVAL);
1201 L2CAP_TRACE_WARNING("No link to update connection parameter")
1206 /*******************************************************************************
1208 ** Function l2cble_update_data_length
1210 ** Description This function update link tx data length if applicable
1214 *******************************************************************************/
1215 void l2cble_update_data_length(tL2C_LCB *p_lcb)
1220 L2CAP_TRACE_DEBUG("%s", __FUNCTION__);
1222 /* See if we have a link control block for the connection */
1226 for (i = 0; i < L2CAP_NUM_FIXED_CHNLS; i++)
1228 if (i + L2CAP_FIRST_FIXED_CHNL != L2CAP_BLE_SIGNALLING_CID)
1230 if ((p_lcb->p_fixed_ccbs[i] != NULL) &&
1231 (tx_mtu < (p_lcb->p_fixed_ccbs[i]->tx_data_len + L2CAP_PKT_OVERHEAD)))
1232 tx_mtu = p_lcb->p_fixed_ccbs[i]->tx_data_len + L2CAP_PKT_OVERHEAD;
1236 if (tx_mtu > BTM_BLE_DATA_SIZE_MAX)
1237 tx_mtu = BTM_BLE_DATA_SIZE_MAX;
1239 /* update TX data length if changed */
1240 if (p_lcb->tx_data_len != tx_mtu)
1241 BTM_SetBleDataLength(p_lcb->remote_bd_addr, tx_mtu);
1245 /*******************************************************************************
1247 ** Function l2cble_process_data_length_change_evt
1249 ** Description This function process the data length change event
1253 *******************************************************************************/
1254 void l2cble_process_data_length_change_event(UINT16 handle, UINT16 tx_data_len, UINT16 rx_data_len)
1256 tL2C_LCB *p_lcb = l2cu_find_lcb_by_handle(handle);
1258 L2CAP_TRACE_DEBUG("%s TX data len = %d", __FUNCTION__, tx_data_len);
1262 if (tx_data_len > 0)
1263 p_lcb->tx_data_len = tx_data_len;
1265 /* ignore rx_data len for now */
1268 /*******************************************************************************
1270 ** Function l2cble_set_fixed_channel_tx_data_length
1272 ** Description This function update max fixed channel tx data length if applicable
1276 *******************************************************************************/
1277 void l2cble_set_fixed_channel_tx_data_length(BD_ADDR remote_bda, UINT16 fix_cid, UINT16 tx_mtu)
1279 tL2C_LCB *p_lcb = l2cu_find_lcb_by_bd_addr(remote_bda, BT_TRANSPORT_LE);
1280 UINT16 cid = fix_cid - L2CAP_FIRST_FIXED_CHNL;
1282 L2CAP_TRACE_DEBUG("%s TX MTU = %d", __FUNCTION__, tx_mtu);
1284 if (!controller_get_interface()->supports_ble_packet_extension())
1286 L2CAP_TRACE_WARNING("%s, request not supported", __FUNCTION__);
1290 /* See if we have a link control block for the connection */
1294 if (p_lcb->p_fixed_ccbs[cid] != NULL)
1296 if (tx_mtu > BTM_BLE_DATA_SIZE_MAX)
1297 tx_mtu = BTM_BLE_DATA_SIZE_MAX;
1299 p_lcb->p_fixed_ccbs[cid]->tx_data_len = tx_mtu;
1302 l2cble_update_data_length(p_lcb);
1305 /*******************************************************************************
1307 ** Function l2cble_credit_based_conn_req
1309 ** Description This function sends LE Credit Based Connection Request for
1310 ** LE connection oriented channels.
1314 *******************************************************************************/
1315 void l2cble_credit_based_conn_req (tL2C_CCB *p_ccb)
1320 if (p_ccb->p_lcb && p_ccb->p_lcb->transport != BT_TRANSPORT_LE)
1322 L2CAP_TRACE_WARNING ("LE link doesn't exist");
1326 l2cu_send_peer_ble_credit_based_conn_req (p_ccb);
1330 /*******************************************************************************
1332 ** Function l2cble_credit_based_conn_res
1334 ** Description This function sends LE Credit Based Connection Response for
1335 ** LE connection oriented channels.
1339 *******************************************************************************/
1340 void l2cble_credit_based_conn_res (tL2C_CCB *p_ccb, UINT16 result)
1345 if (p_ccb->p_lcb && p_ccb->p_lcb->transport != BT_TRANSPORT_LE)
1347 L2CAP_TRACE_WARNING ("LE link doesn't exist");
1351 l2cu_send_peer_ble_credit_based_conn_res (p_ccb, result);
1355 /*******************************************************************************
1357 ** Function l2cble_send_flow_control_credit
1359 ** Description This function sends flow control credits for
1360 ** LE connection oriented channels.
1364 *******************************************************************************/
1365 void l2cble_send_flow_control_credit(tL2C_CCB *p_ccb, UINT16 credit_value)
1370 if (p_ccb->p_lcb && p_ccb->p_lcb->transport != BT_TRANSPORT_LE)
1372 L2CAP_TRACE_WARNING ("LE link doesn't exist");
1376 l2cu_send_peer_ble_flow_control_credit(p_ccb, credit_value);
1381 /*******************************************************************************
1383 ** Function l2cble_send_peer_disc_req
1385 ** Description This function sends disconnect request
1386 ** to the peer LE device
1390 *******************************************************************************/
1391 void l2cble_send_peer_disc_req(tL2C_CCB *p_ccb)
1393 L2CAP_TRACE_DEBUG ("%s",__func__);
1397 if (p_ccb->p_lcb && p_ccb->p_lcb->transport != BT_TRANSPORT_LE)
1399 L2CAP_TRACE_WARNING ("LE link doesn't exist");
1403 l2cu_send_peer_ble_credit_based_disconn_req(p_ccb);
1407 /*******************************************************************************
1409 ** Function l2cble_sec_comp
1411 ** Description This function is called when security procedure for an LE COC
1416 *******************************************************************************/
1417 void l2cble_sec_comp(BD_ADDR p_bda, tBT_TRANSPORT transport, void *p_ref_data, UINT8 status)
1419 tL2C_LCB *p_lcb = l2cu_find_lcb_by_bd_addr(p_bda, BT_TRANSPORT_LE);
1420 tL2CAP_SEC_DATA *p_buf = NULL;
1426 L2CAP_TRACE_WARNING ("%s security complete for unknown device", __func__);
1430 sec_act = p_lcb->sec_act;
1433 if (!fixed_queue_is_empty(p_lcb->le_sec_pending_q))
1435 p_buf = (tL2CAP_SEC_DATA*) fixed_queue_dequeue(p_lcb->le_sec_pending_q);
1438 L2CAP_TRACE_WARNING ("%s Security complete for request not initiated from L2CAP",
1443 if (status != BTM_SUCCESS)
1445 (*(p_buf->p_callback))(p_bda, BT_TRANSPORT_LE, p_buf->p_ref_data, status);
1449 if (sec_act == BTM_SEC_ENCRYPT_MITM)
1451 BTM_GetSecurityFlagsByTransport(p_bda, &sec_flag, transport);
1452 if (sec_flag & BTM_SEC_FLAG_LKEY_AUTHED)
1453 (*(p_buf->p_callback))(p_bda, BT_TRANSPORT_LE, p_buf->p_ref_data, status);
1456 L2CAP_TRACE_DEBUG ("%s MITM Protection Not present", __func__);
1457 (*(p_buf->p_callback))(p_bda, BT_TRANSPORT_LE, p_buf->p_ref_data,
1458 BTM_FAILED_ON_SECURITY);
1463 L2CAP_TRACE_DEBUG ("%s MITM Protection not required sec_act = %d",
1464 __func__, p_lcb->sec_act);
1466 (*(p_buf->p_callback))(p_bda, BT_TRANSPORT_LE, p_buf->p_ref_data, status);
1472 L2CAP_TRACE_WARNING ("%s Security complete for request not initiated from L2CAP", __func__);
1477 while (!fixed_queue_is_empty(p_lcb->le_sec_pending_q))
1479 p_buf = (tL2CAP_SEC_DATA*) fixed_queue_dequeue(p_lcb->le_sec_pending_q);
1481 if (status != BTM_SUCCESS)
1482 (*(p_buf->p_callback))(p_bda, BT_TRANSPORT_LE, p_buf->p_ref_data, status);
1484 l2ble_sec_access_req(p_bda, p_buf->psm, p_buf->is_originator,
1485 p_buf->p_callback, p_buf->p_ref_data);
1491 /*******************************************************************************
1493 ** Function l2ble_sec_access_req
1495 ** Description This function is called by LE COC link to meet the
1496 ** security requirement for the link
1498 ** Returns TRUE - security procedures are started
1501 *******************************************************************************/
1502 BOOLEAN l2ble_sec_access_req(BD_ADDR bd_addr, UINT16 psm, BOOLEAN is_originator, tL2CAP_SEC_CBACK *p_callback, void *p_ref_data)
1504 L2CAP_TRACE_DEBUG ("%s", __func__);
1506 tL2C_LCB *p_lcb = NULL;
1510 L2CAP_TRACE_ERROR("%s No callback function", __func__);
1514 p_lcb = l2cu_find_lcb_by_bd_addr(bd_addr, BT_TRANSPORT_LE);
1518 L2CAP_TRACE_ERROR ("%s Security check for unknown device", __func__);
1519 p_callback(bd_addr, BT_TRANSPORT_LE, p_ref_data, BTM_UNKNOWN_ADDR);
1523 tL2CAP_SEC_DATA *p_buf = (tL2CAP_SEC_DATA*) osi_malloc((UINT16)sizeof(tL2CAP_SEC_DATA));
1526 p_callback(bd_addr, BT_TRANSPORT_LE, p_ref_data, BTM_NO_RESOURCES);
1531 p_buf->is_originator = is_originator;
1532 p_buf->p_callback = p_callback;
1533 p_buf->p_ref_data = p_ref_data;
1534 fixed_queue_enqueue(p_lcb->le_sec_pending_q, p_buf);
1535 status = btm_ble_start_sec_check(bd_addr, psm, is_originator, &l2cble_sec_comp, p_ref_data);
1539 #endif /* (BLE_INCLUDED == TRUE) */