1 /******************************************************************************
3 * Copyright (C) 2004-2012 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 the pan action functions for the state machine.
23 ******************************************************************************/
25 #include "bt_target.h"
27 #if defined(PAN_INCLUDED) && (PAN_INCLUDED == TRUE)
31 #include "bt_common.h"
33 #include "bta_pan_api.h"
34 #include "bta_pan_int.h"
35 #include "bta_pan_co.h"
40 /* RX and TX data flow mask */
41 #define BTA_PAN_RX_MASK 0x0F
42 #define BTA_PAN_TX_MASK 0xF0
44 /*******************************************************************************
46 ** Function bta_pan_pm_conn_busy
48 ** Description set pan pm connection busy state
50 ** Params p_scb: state machine control block of pan connection
54 *******************************************************************************/
55 static void bta_pan_pm_conn_busy(tBTA_PAN_SCB *p_scb)
57 if ((p_scb != NULL) && (p_scb->state != BTA_PAN_IDLE_ST))
58 bta_sys_busy(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr);
61 /*******************************************************************************
63 ** Function bta_pan_pm_conn_idle
65 ** Description set pan pm connection idle state
67 ** Params p_scb: state machine control block of pan connection
71 *******************************************************************************/
72 static void bta_pan_pm_conn_idle(tBTA_PAN_SCB *p_scb)
74 if ((p_scb != NULL) && (p_scb->state != BTA_PAN_IDLE_ST))
75 bta_sys_idle(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr);
78 /*******************************************************************************
80 ** Function bta_pan_conn_state_cback
82 ** Description Connection state callback from Pan profile
87 *******************************************************************************/
88 static void bta_pan_conn_state_cback(UINT16 handle, BD_ADDR bd_addr, tPAN_RESULT state,
89 BOOLEAN is_role_change, UINT8 src_role, UINT8 dst_role)
92 tBTA_PAN_CONN *p_buf = (tBTA_PAN_CONN *)osi_malloc(sizeof(tBTA_PAN_CONN));
94 if ((state == PAN_SUCCESS) && !is_role_change) {
95 p_buf->hdr.event = BTA_PAN_CONN_OPEN_EVT;
96 if ((p_scb = bta_pan_scb_by_handle(handle)) == NULL) {
98 p_scb = bta_pan_scb_alloc();
100 /* we have exceeded maximum number of connections */
102 PAN_Disconnect (handle);
106 p_scb->handle = handle;
107 p_scb->local_role = src_role;
108 p_scb->peer_role = dst_role;
109 p_scb->pan_flow_enable = TRUE;
110 bdcpy(p_scb->bd_addr, bd_addr);
111 p_scb->data_queue = fixed_queue_new(SIZE_MAX);
113 if (src_role == PAN_ROLE_CLIENT)
114 p_scb->app_id = bta_pan_cb.app_id[0];
115 else if (src_role == PAN_ROLE_GN_SERVER)
116 p_scb->app_id = bta_pan_cb.app_id[1];
117 else if (src_role == PAN_ROLE_NAP_SERVER)
118 p_scb->app_id = bta_pan_cb.app_id[2];
120 else if ((state != PAN_SUCCESS) && !is_role_change) {
121 p_buf->hdr.event = BTA_PAN_CONN_CLOSE_EVT;
126 p_buf->result = state;
127 p_buf->hdr.layer_specific = handle;
129 bta_sys_sendmsg(p_buf);
132 /*******************************************************************************
134 ** Function bta_pan_data_flow_cb
136 ** Description Data flow status callback from PAN
141 *******************************************************************************/
142 static void bta_pan_data_flow_cb(UINT16 handle, tPAN_RESULT result)
146 if ((p_scb = bta_pan_scb_by_handle(handle)) == NULL)
149 if (result == PAN_TX_FLOW_ON) {
150 BT_HDR *p_buf = (BT_HDR *) osi_malloc(sizeof(BT_HDR));
151 p_buf->layer_specific = handle;
152 p_buf->event = BTA_PAN_BNEP_FLOW_ENABLE_EVT;
153 bta_sys_sendmsg(p_buf);
154 bta_pan_co_rx_flow(handle, p_scb->app_id, TRUE);
155 } else if (result == PAN_TX_FLOW_OFF) {
156 p_scb->pan_flow_enable = FALSE;
157 bta_pan_co_rx_flow(handle, p_scb->app_id, FALSE);
161 /*******************************************************************************
163 ** Function bta_pan_data_buf_ind_cback
165 ** Description data indication callback from pan profile
170 *******************************************************************************/
171 static void bta_pan_data_buf_ind_cback(UINT16 handle, BD_ADDR src, BD_ADDR dst, UINT16 protocol, BT_HDR *p_buf,
172 BOOLEAN ext, BOOLEAN forward)
177 if (sizeof(tBTA_PAN_DATA_PARAMS) > p_buf->offset) {
178 /* offset smaller than data structure in front of actual data */
179 p_new_buf = (BT_HDR *)osi_malloc(PAN_BUF_SIZE);
180 memcpy((UINT8 *)(p_new_buf + 1) + sizeof(tBTA_PAN_DATA_PARAMS),
181 (UINT8 *)(p_buf + 1) + p_buf->offset, p_buf->len);
182 p_new_buf->len = p_buf->len;
183 p_new_buf->offset = sizeof(tBTA_PAN_DATA_PARAMS);
188 /* copy params into the space before the data */
189 bdcpy(((tBTA_PAN_DATA_PARAMS *)p_new_buf)->src, src);
190 bdcpy(((tBTA_PAN_DATA_PARAMS *)p_new_buf)->dst, dst);
191 ((tBTA_PAN_DATA_PARAMS *)p_new_buf)->protocol = protocol;
192 ((tBTA_PAN_DATA_PARAMS *)p_new_buf)->ext = ext;
193 ((tBTA_PAN_DATA_PARAMS *)p_new_buf)->forward = forward;
195 if ((p_scb = bta_pan_scb_by_handle(handle)) == NULL) {
200 fixed_queue_enqueue(p_scb->data_queue, p_new_buf);
201 BT_HDR *p_event = (BT_HDR *)osi_malloc(sizeof(BT_HDR));
202 p_event->layer_specific = handle;
203 p_event->event = BTA_PAN_RX_FROM_BNEP_READY_EVT;
204 bta_sys_sendmsg(p_event);
207 /*******************************************************************************
209 ** Function bta_pan_pfilt_ind_cback
216 *******************************************************************************/
217 static void bta_pan_pfilt_ind_cback(UINT16 handle, BOOLEAN indication,tBNEP_RESULT result,
218 UINT16 num_filters, UINT8 *p_filters)
221 bta_pan_co_pfilt_ind(handle, indication, (tBTA_PAN_STATUS)((result == BNEP_SUCCESS) ? BTA_PAN_SUCCESS : BTA_PAN_FAIL),
222 num_filters, p_filters);
228 /*******************************************************************************
230 ** Function bta_pan_mfilt_ind_cback
237 *******************************************************************************/
238 static void bta_pan_mfilt_ind_cback(UINT16 handle, BOOLEAN indication,tBNEP_RESULT result,
239 UINT16 num_mfilters, UINT8 *p_mfilters)
242 bta_pan_co_mfilt_ind(handle, indication, (tBTA_PAN_STATUS)((result == BNEP_SUCCESS) ? BTA_PAN_SUCCESS : BTA_PAN_FAIL),
243 num_mfilters, p_mfilters);
248 /*******************************************************************************
250 ** Function bta_pan_has_multiple_connections
252 ** Description Check whether there are multiple GN/NAP connections to
258 *******************************************************************************/
259 static BOOLEAN bta_pan_has_multiple_connections(UINT8 app_id)
261 tBTA_PAN_SCB *p_scb = NULL;
262 BOOLEAN found = FALSE;
265 for (UINT8 index = 0; index < BTA_PAN_NUM_CONN; index++)
267 p_scb = &bta_pan_cb.scb[index];
268 if (p_scb->in_use == TRUE && app_id == p_scb->app_id)
270 /* save temp bd_addr */
271 bdcpy(bd_addr, p_scb->bd_addr);
277 /* If cannot find a match then there is no connection at all */
281 /* Find whether there is another connection with different device other than PANU.
282 Could be same service or different service */
283 for (UINT8 index = 0; index < BTA_PAN_NUM_CONN; index++)
285 p_scb = &bta_pan_cb.scb[index];
286 if (p_scb->in_use == TRUE && p_scb->app_id != bta_pan_cb.app_id[0] &&
287 bdcmp(bd_addr, p_scb->bd_addr))
295 /*******************************************************************************
297 ** Function bta_pan_enable
305 *******************************************************************************/
306 void bta_pan_enable(tBTA_PAN_DATA *p_data)
308 tPAN_REGISTER reg_data;
309 UINT16 initial_discoverability;
310 UINT16 initial_connectability;
316 bta_pan_cb.p_cback = p_data->api_enable.p_cback;
318 reg_data.pan_conn_state_cb = bta_pan_conn_state_cback;
319 reg_data.pan_bridge_req_cb = NULL;
320 reg_data.pan_data_buf_ind_cb = bta_pan_data_buf_ind_cback;
321 reg_data.pan_data_ind_cb = NULL;
322 reg_data.pan_pfilt_ind_cb = bta_pan_pfilt_ind_cback;
323 reg_data.pan_mfilt_ind_cb = bta_pan_mfilt_ind_cback;
324 reg_data.pan_tx_data_flow_cb = bta_pan_data_flow_cb;
326 /* read connectability and discoverability settings.
327 Pan profile changes the settings. We have to change it back to
328 be consistent with other bta subsystems */
329 initial_connectability = BTM_ReadConnectability(&c_window, &c_interval);
330 initial_discoverability = BTM_ReadDiscoverability(&d_window, &d_interval);
333 PAN_Register (®_data);
336 /* set it back to original value */
337 BTM_SetDiscoverability(initial_discoverability, d_window, d_interval);
338 BTM_SetConnectability(initial_connectability, c_window, c_interval);
340 bta_pan_cb.flow_mask = bta_pan_co_init(&bta_pan_cb.q_level);
341 bta_pan_cb.p_cback(BTA_PAN_ENABLE_EVT, NULL);
345 /*******************************************************************************
347 ** Function bta_pan_set_role
353 *******************************************************************************/
354 void bta_pan_set_role(tBTA_PAN_DATA *p_data)
357 tBTA_PAN_SET_ROLE set_role;
361 bta_pan_cb.app_id[0] = p_data->api_set_role.user_app_id;
362 bta_pan_cb.app_id[1] = p_data->api_set_role.gn_app_id;
363 bta_pan_cb.app_id[2] = p_data->api_set_role.nap_app_id;
365 sec[0] = p_data->api_set_role.user_sec_mask;
366 sec[1] = p_data->api_set_role.gn_sec_mask;
367 sec[2] = p_data->api_set_role.nap_sec_mask;
369 /* set security correctly in api and here */
370 status = PAN_SetRole(p_data->api_set_role.role, sec,
371 p_data->api_set_role.user_name,
372 p_data->api_set_role.gn_name,
373 p_data->api_set_role.nap_name);
375 set_role.role = p_data->api_set_role.role;
376 if(status == PAN_SUCCESS)
378 if(p_data->api_set_role.role & PAN_ROLE_NAP_SERVER )
379 bta_sys_add_uuid(UUID_SERVCLASS_NAP);
381 bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
383 if(p_data->api_set_role.role & PAN_ROLE_GN_SERVER )
384 bta_sys_add_uuid(UUID_SERVCLASS_GN);
386 bta_sys_remove_uuid(UUID_SERVCLASS_GN);
388 if(p_data->api_set_role.role & PAN_ROLE_CLIENT )
389 bta_sys_add_uuid(UUID_SERVCLASS_PANU);
391 bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
393 set_role.status = BTA_PAN_SUCCESS;
395 /* if status is not success clear everything */
398 PAN_SetRole(0, 0, NULL, NULL, NULL);
399 bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
400 bta_sys_remove_uuid(UUID_SERVCLASS_GN);
401 bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
402 set_role.status = BTA_PAN_FAIL;
404 bta_pan_cb.p_cback(BTA_PAN_SET_ROLE_EVT, (tBTA_PAN *)&set_role);
409 /*******************************************************************************
411 ** Function bta_pan_disable
419 *******************************************************************************/
420 void bta_pan_disable(void)
424 tBTA_PAN_SCB *p_scb = &bta_pan_cb.scb[0];
428 /* close all connections */
429 PAN_SetRole (0, NULL, NULL, NULL, NULL);
431 #if (BTA_EIR_CANNED_UUID_LIST != TRUE)
432 bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
433 bta_sys_remove_uuid(UUID_SERVCLASS_GN);
434 bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
435 #endif // BTA_EIR_CANNED_UUID_LIST
436 /* free all queued up data buffers */
437 for (i = 0; i < BTA_PAN_NUM_CONN; i++, p_scb++)
441 while ((p_buf = (BT_HDR *)fixed_queue_try_dequeue(p_scb->data_queue)) != NULL)
444 bta_pan_co_close(p_scb->handle, p_scb->app_id);
455 /*******************************************************************************
457 ** Function bta_pan_open
463 *******************************************************************************/
464 void bta_pan_open(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
468 tBTA_PAN_OPENING opening;
471 status = PAN_Connect (p_data->api_open.bd_addr, p_data->api_open.local_role, p_data->api_open.peer_role,
473 APPL_TRACE_DEBUG("%s pan connect status: %d", __func__, status);
475 if(status == PAN_SUCCESS)
478 bdcpy(p_scb->bd_addr, p_data->api_open.bd_addr);
479 p_scb->local_role = p_data->api_open.local_role;
480 p_scb->peer_role = p_data->api_open.peer_role;
481 bdcpy(opening.bd_addr, p_data->api_open.bd_addr);
482 opening.handle = p_scb->handle;
483 bta_pan_cb.p_cback(BTA_PAN_OPENING_EVT, (tBTA_PAN *)&opening);
489 bta_pan_scb_dealloc(p_scb);
490 bdcpy(data.bd_addr, p_data->api_open.bd_addr);
491 data.status = BTA_PAN_FAIL;
492 data.local_role = p_data->api_open.local_role;
493 data.peer_role = p_data->api_open.peer_role;
494 bta_pan_cb.p_cback(BTA_PAN_OPEN_EVT, (tBTA_PAN *)&data);
500 /*******************************************************************************
502 ** Function bta_pan_close
510 *******************************************************************************/
511 void bta_pan_api_close (tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
513 tBTA_PAN_CONN *p_buf = (tBTA_PAN_CONN *)osi_malloc(sizeof(tBTA_PAN_CONN));
517 PAN_Disconnect(p_scb->handle);
520 * Send an event to BTA so that application will get the connection
523 p_buf->hdr.event = BTA_PAN_CONN_CLOSE_EVT;
524 p_buf->hdr.layer_specific = p_scb->handle;
526 bta_sys_sendmsg(p_buf);
529 /*******************************************************************************
531 ** Function bta_pan_conn_open
533 ** Description process connection open event
537 *******************************************************************************/
538 void bta_pan_conn_open(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
543 APPL_TRACE_DEBUG("%s pan connection result: %d", __func__, p_data->conn.result);
545 bdcpy(data.bd_addr, p_scb->bd_addr);
546 data.handle = p_scb->handle;
547 data.local_role = p_scb->local_role;
548 data.peer_role = p_scb->peer_role;
550 if(p_data->conn.result == PAN_SUCCESS)
552 data.status = BTA_PAN_SUCCESS;
553 p_scb->pan_flow_enable = TRUE;
554 p_scb->app_flow_enable = TRUE;
555 bta_sys_conn_open(BTA_ID_PAN ,p_scb->app_id, p_scb->bd_addr);
559 bta_pan_scb_dealloc(p_scb);
560 data.status = BTA_PAN_FAIL;
563 p_scb->pan_flow_enable = TRUE;
564 p_scb->app_flow_enable = TRUE;
566 /* If app_id is NAP/GN, check whether there are multiple connections.
567 If there are, provide a special app_id to dm to enforce master role only. */
568 if ((p_scb->app_id == bta_pan_cb.app_id[1] || p_scb->app_id == bta_pan_cb.app_id[2]) &&
569 bta_pan_has_multiple_connections(p_scb->app_id))
571 p_scb->app_id = BTA_APP_ID_PAN_MULTI;
574 bta_sys_conn_open(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr);
575 bta_pan_cb.p_cback(BTA_PAN_OPEN_EVT, (tBTA_PAN *)&data);
580 /*******************************************************************************
582 ** Function bta_pan_conn_close
584 ** Description process connection close event
590 *******************************************************************************/
591 void bta_pan_conn_close(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
597 data.handle = p_data->hdr.layer_specific;
599 bta_sys_conn_close( BTA_ID_PAN ,p_scb->app_id, p_scb->bd_addr);
601 /* free all queued up data buffers */
602 while ((p_buf = (BT_HDR *)fixed_queue_try_dequeue(p_scb->data_queue)) != NULL)
605 bta_pan_scb_dealloc(p_scb);
607 bta_pan_cb.p_cback(BTA_PAN_CLOSE_EVT, (tBTA_PAN *)&data);
614 /*******************************************************************************
616 ** Function bta_pan_rx_path
618 ** Description Handle data on the RX path (data sent from the phone to
624 *******************************************************************************/
625 void bta_pan_rx_path(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
629 /* if data path configured for rx pull */
630 if ((bta_pan_cb.flow_mask & BTA_PAN_RX_MASK) == BTA_PAN_RX_PULL)
632 /* if we can accept data */
633 if (p_scb->pan_flow_enable == TRUE)
635 /* call application callout function for rx path */
636 bta_pan_co_rx_path(p_scb->handle, p_scb->app_id);
639 /* else data path configured for rx push */
646 /*******************************************************************************
648 ** Function bta_pan_tx_path
650 ** Description Handle the TX data path (data sent from BTA to the phone).
655 *******************************************************************************/
656 void bta_pan_tx_path(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
660 /* if data path configured for tx pull */
661 if ((bta_pan_cb.flow_mask & BTA_PAN_TX_MASK) == BTA_PAN_TX_PULL)
663 bta_pan_pm_conn_busy(p_scb);
664 /* call application callout function for tx path */
665 bta_pan_co_tx_path(p_scb->handle, p_scb->app_id);
667 /* free data that exceeds queue level */
668 while (fixed_queue_length(p_scb->data_queue) > bta_pan_cb.q_level)
669 osi_free(fixed_queue_try_dequeue(p_scb->data_queue));
670 bta_pan_pm_conn_idle(p_scb);
672 /* if configured for zero copy push */
673 else if ((bta_pan_cb.flow_mask & BTA_PAN_TX_MASK) == BTA_PAN_TX_PUSH_BUF)
675 /* if app can accept data */
676 if (p_scb->app_flow_enable == TRUE)
680 /* read data from the queue */
681 if ((p_buf = (BT_HDR *)fixed_queue_try_dequeue(p_scb->data_queue)) != NULL)
683 /* send data to application */
684 bta_pan_co_tx_writebuf(p_scb->handle,
686 ((tBTA_PAN_DATA_PARAMS *)p_buf)->src,
687 ((tBTA_PAN_DATA_PARAMS *)p_buf)->dst,
688 ((tBTA_PAN_DATA_PARAMS *)p_buf)->protocol,
690 ((tBTA_PAN_DATA_PARAMS *)p_buf)->ext,
691 ((tBTA_PAN_DATA_PARAMS *)p_buf)->forward);
694 /* free data that exceeds queue level */
695 while (fixed_queue_length(p_scb->data_queue) > bta_pan_cb.q_level)
696 osi_free(fixed_queue_try_dequeue(p_scb->data_queue));
698 /* if there is more data to be passed to
700 if (!fixed_queue_is_empty(p_scb->data_queue))
702 p_buf = (BT_HDR *)osi_malloc(sizeof(BT_HDR));
703 p_buf->layer_specific = p_scb->handle;
704 p_buf->event = BTA_PAN_RX_FROM_BNEP_READY_EVT;
705 bta_sys_sendmsg(p_buf);
711 /*******************************************************************************
713 ** Function bta_pan_tx_flow
715 ** Description Set the application flow control state.
720 *******************************************************************************/
721 void bta_pan_tx_flow(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
723 p_scb->app_flow_enable = p_data->ci_tx_flow.enable;
726 /*******************************************************************************
728 ** Function bta_pan_write_buf
730 ** Description Handle a bta_pan_ci_rx_writebuf() and send data to PAN.
735 *******************************************************************************/
736 void bta_pan_write_buf(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
738 if ((bta_pan_cb.flow_mask & BTA_PAN_RX_MASK) == BTA_PAN_RX_PUSH_BUF)
740 bta_pan_pm_conn_busy(p_scb);
742 PAN_WriteBuf (p_scb->handle,
743 ((tBTA_PAN_DATA_PARAMS *)p_data)->dst,
744 ((tBTA_PAN_DATA_PARAMS *)p_data)->src,
745 ((tBTA_PAN_DATA_PARAMS *)p_data)->protocol,
747 ((tBTA_PAN_DATA_PARAMS *)p_data)->ext);
748 bta_pan_pm_conn_idle(p_scb);
753 /*******************************************************************************
755 ** Function bta_pan_free_buf
757 ** Description Frees the data buffer during closing state
762 *******************************************************************************/
763 void bta_pan_free_buf(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
769 #endif /* PAN_INCLUDED */