1 /******************************************************************************
2 *
3 * Copyright (C) 2004-2012 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 the pan action functions for the state machine.
22 *
23 ******************************************************************************/
24
25 #include "bt_target.h"
26
27 #if defined(PAN_INCLUDED) && (PAN_INCLUDED == TRUE)
28
29 #include "bta_api.h"
30 #include "bta_sys.h"
31 #include "bd.h"
32 #include "gki.h"
33 #include "pan_api.h"
34 #include "bta_pan_api.h"
35 #include "bta_pan_int.h"
36 #include "bta_pan_co.h"
37 #include <string.h>
38 #include "utl.h"
39
40
41 /* RX and TX data flow mask */
42 #define BTA_PAN_RX_MASK 0x0F
43 #define BTA_PAN_TX_MASK 0xF0
44
45 /*******************************************************************************
46 **
47 ** Function bta_pan_pm_conn_busy
48 **
49 ** Description set pan pm connection busy state
50 **
51 ** Params p_scb: state machine control block of pan connection
52 **
53 ** Returns void
54 **
55 *******************************************************************************/
bta_pan_pm_conn_busy(tBTA_PAN_SCB * p_scb)56 static void bta_pan_pm_conn_busy(tBTA_PAN_SCB *p_scb)
57 {
58 if ((p_scb != NULL) && (p_scb->state != BTA_PAN_IDLE_ST))
59 bta_sys_busy(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr);
60 }
61
62 /*******************************************************************************
63 **
64 ** Function bta_pan_pm_conn_idle
65 **
66 ** Description set pan pm connection idle state
67 **
68 ** Params p_scb: state machine control block of pan connection
69 **
70 ** Returns void
71 **
72 *******************************************************************************/
bta_pan_pm_conn_idle(tBTA_PAN_SCB * p_scb)73 static void bta_pan_pm_conn_idle(tBTA_PAN_SCB *p_scb)
74 {
75 if ((p_scb != NULL) && (p_scb->state != BTA_PAN_IDLE_ST))
76 bta_sys_idle(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr);
77 }
78
79 /*******************************************************************************
80 **
81 ** Function bta_pan_conn_state_cback
82 **
83 ** Description Connection state callback from Pan profile
84 **
85 **
86 ** Returns void
87 **
88 *******************************************************************************/
bta_pan_conn_state_cback(UINT16 handle,BD_ADDR bd_addr,tPAN_RESULT state,BOOLEAN is_role_change,UINT8 src_role,UINT8 dst_role)89 static void bta_pan_conn_state_cback(UINT16 handle, BD_ADDR bd_addr, tPAN_RESULT state,
90 BOOLEAN is_role_change, UINT8 src_role, UINT8 dst_role)
91 {
92
93 tBTA_PAN_CONN * p_buf;
94 tBTA_PAN_SCB *p_scb;
95
96
97 if ((p_buf = (tBTA_PAN_CONN *) GKI_getbuf(sizeof(tBTA_PAN_CONN))) != NULL)
98 {
99 if((state == PAN_SUCCESS) && !is_role_change)
100 {
101 p_buf->hdr.event = BTA_PAN_CONN_OPEN_EVT;
102 if((p_scb = bta_pan_scb_by_handle(handle)) == NULL)
103 {
104 /* allocate an scb */
105 p_scb = bta_pan_scb_alloc();
106
107 }
108 /* we have exceeded maximum number of connections */
109 if(!p_scb)
110 {
111 PAN_Disconnect (handle);
112 return;
113 }
114
115 p_scb->handle = handle;
116 p_scb->local_role = src_role;
117 p_scb->peer_role = dst_role;
118 p_scb->pan_flow_enable = TRUE;
119 bdcpy(p_scb->bd_addr, bd_addr);
120 GKI_init_q(&p_scb->data_queue);
121
122 if(src_role == PAN_ROLE_CLIENT)
123 p_scb->app_id = bta_pan_cb.app_id[0];
124 else if (src_role == PAN_ROLE_GN_SERVER)
125 p_scb->app_id = bta_pan_cb.app_id[1];
126 else if (src_role == PAN_ROLE_NAP_SERVER)
127 p_scb->app_id = bta_pan_cb.app_id[2];
128
129 }
130 else if((state != PAN_SUCCESS) && !is_role_change)
131 {
132 p_buf->hdr.event = BTA_PAN_CONN_CLOSE_EVT;
133
134 }
135 else
136 {
137 return;
138 }
139
140 p_buf->result = state;
141 p_buf->hdr.layer_specific = handle;
142 bta_sys_sendmsg(p_buf);
143
144 }
145
146
147
148 }
149
150 /*******************************************************************************
151 **
152 ** Function bta_pan_data_flow_cb
153 **
154 ** Description Data flow status callback from PAN
155 **
156 **
157 ** Returns void
158 **
159 *******************************************************************************/
bta_pan_data_flow_cb(UINT16 handle,tPAN_RESULT result)160 static void bta_pan_data_flow_cb(UINT16 handle, tPAN_RESULT result)
161 {
162 BT_HDR *p_buf;
163 tBTA_PAN_SCB *p_scb;
164
165 if((p_scb = bta_pan_scb_by_handle(handle)) == NULL)
166 return;
167
168 if(result == PAN_TX_FLOW_ON)
169 {
170 if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL)
171 {
172 p_buf->layer_specific = handle;
173 p_buf->event = BTA_PAN_BNEP_FLOW_ENABLE_EVT;
174 bta_sys_sendmsg(p_buf);
175 }
176 bta_pan_co_rx_flow(handle, p_scb->app_id, TRUE);
177
178 }
179 else if(result == PAN_TX_FLOW_OFF)
180 {
181
182 p_scb->pan_flow_enable = FALSE;
183 bta_pan_co_rx_flow(handle, p_scb->app_id, FALSE);
184
185 }
186
187
188 }
189
190
191 /*******************************************************************************
192 **
193 ** Function bta_pan_data_buf_ind_cback
194 **
195 ** Description data indication callback from pan profile
196 **
197 **
198 ** Returns void
199 **
200 *******************************************************************************/
bta_pan_data_buf_ind_cback(UINT16 handle,BD_ADDR src,BD_ADDR dst,UINT16 protocol,BT_HDR * p_buf,BOOLEAN ext,BOOLEAN forward)201 static void bta_pan_data_buf_ind_cback(UINT16 handle, BD_ADDR src, BD_ADDR dst, UINT16 protocol, BT_HDR *p_buf,
202 BOOLEAN ext, BOOLEAN forward)
203 {
204 tBTA_PAN_SCB *p_scb;
205 BT_HDR * p_event;
206 BT_HDR *p_new_buf;
207
208 if ( sizeof(tBTA_PAN_DATA_PARAMS) > p_buf->offset )
209 {
210 /* offset smaller than data structure in front of actual data */
211 p_new_buf = (BT_HDR *)GKI_getpoolbuf( PAN_POOL_ID );
212 if(!p_new_buf)
213 {
214 APPL_TRACE_WARNING("Cannot get a PAN GKI buffer");
215 GKI_freebuf( p_buf );
216 return;
217 }
218 else
219 {
220 memcpy( (UINT8 *)(p_new_buf+1)+sizeof(tBTA_PAN_DATA_PARAMS), (UINT8 *)(p_buf+1)+p_buf->offset, p_buf->len );
221 p_new_buf->len = p_buf->len;
222 p_new_buf->offset = sizeof(tBTA_PAN_DATA_PARAMS);
223 GKI_freebuf( p_buf );
224 }
225 }
226 else
227 {
228 p_new_buf = p_buf;
229 }
230 /* copy params into the space before the data */
231 bdcpy(((tBTA_PAN_DATA_PARAMS *)p_new_buf)->src, src);
232 bdcpy(((tBTA_PAN_DATA_PARAMS *)p_new_buf)->dst, dst);
233 ((tBTA_PAN_DATA_PARAMS *)p_new_buf)->protocol = protocol;
234 ((tBTA_PAN_DATA_PARAMS *)p_new_buf)->ext = ext;
235 ((tBTA_PAN_DATA_PARAMS *)p_new_buf)->forward = forward;
236
237
238 if((p_scb = bta_pan_scb_by_handle(handle)) == NULL)
239 {
240
241 GKI_freebuf( p_new_buf );
242 return;
243 }
244
245 GKI_enqueue(&p_scb->data_queue, p_new_buf);
246 if ((p_event = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL)
247 {
248 p_event->layer_specific = handle;
249 p_event->event = BTA_PAN_RX_FROM_BNEP_READY_EVT;
250 bta_sys_sendmsg(p_event);
251 }
252
253 }
254
255
256 /*******************************************************************************
257 **
258 ** Function bta_pan_pfilt_ind_cback
259 **
260 ** Description
261 **
262 **
263 ** Returns void
264 **
265 *******************************************************************************/
bta_pan_pfilt_ind_cback(UINT16 handle,BOOLEAN indication,tBNEP_RESULT result,UINT16 num_filters,UINT8 * p_filters)266 static void bta_pan_pfilt_ind_cback(UINT16 handle, BOOLEAN indication,tBNEP_RESULT result,
267 UINT16 num_filters, UINT8 *p_filters)
268 {
269
270 bta_pan_co_pfilt_ind(handle, indication, (tBTA_PAN_STATUS)((result == BNEP_SUCCESS) ? BTA_PAN_SUCCESS : BTA_PAN_FAIL),
271 num_filters, p_filters);
272
273
274 }
275
276
277 /*******************************************************************************
278 **
279 ** Function bta_pan_mfilt_ind_cback
280 **
281 ** Description
282 **
283 **
284 ** Returns void
285 **
286 *******************************************************************************/
bta_pan_mfilt_ind_cback(UINT16 handle,BOOLEAN indication,tBNEP_RESULT result,UINT16 num_mfilters,UINT8 * p_mfilters)287 static void bta_pan_mfilt_ind_cback(UINT16 handle, BOOLEAN indication,tBNEP_RESULT result,
288 UINT16 num_mfilters, UINT8 *p_mfilters)
289 {
290
291 bta_pan_co_mfilt_ind(handle, indication, (tBTA_PAN_STATUS)((result == BNEP_SUCCESS) ? BTA_PAN_SUCCESS : BTA_PAN_FAIL),
292 num_mfilters, p_mfilters);
293 }
294
295
296
297 /*******************************************************************************
298 **
299 ** Function bta_pan_enable
300 **
301 ** Description
302 **
303 **
304 **
305 ** Returns void
306 **
307 *******************************************************************************/
bta_pan_enable(tBTA_PAN_DATA * p_data)308 void bta_pan_enable(tBTA_PAN_DATA *p_data)
309 {
310 tPAN_REGISTER reg_data;
311 UINT16 initial_discoverability;
312 UINT16 initial_connectability;
313 UINT16 d_window;
314 UINT16 d_interval;
315 UINT16 c_window;
316 UINT16 c_interval;
317
318 bta_pan_cb.p_cback = p_data->api_enable.p_cback;
319
320 reg_data.pan_conn_state_cb = bta_pan_conn_state_cback;
321 reg_data.pan_bridge_req_cb = NULL;
322 reg_data.pan_data_buf_ind_cb = bta_pan_data_buf_ind_cback;
323 reg_data.pan_data_ind_cb = NULL;
324 reg_data.pan_pfilt_ind_cb = bta_pan_pfilt_ind_cback;
325 reg_data.pan_mfilt_ind_cb = bta_pan_mfilt_ind_cback;
326 reg_data.pan_tx_data_flow_cb = bta_pan_data_flow_cb;
327
328 /* read connectability and discoverability settings.
329 Pan profile changes the settings. We have to change it back to
330 be consistent with other bta subsystems */
331 initial_connectability = BTM_ReadConnectability(&c_window, &c_interval);
332 initial_discoverability = BTM_ReadDiscoverability(&d_window, &d_interval);
333
334
335 PAN_Register (®_data);
336
337
338 /* set it back to original value */
339 BTM_SetDiscoverability(initial_discoverability, d_window, d_interval);
340 BTM_SetConnectability(initial_connectability, c_window, c_interval);
341
342 bta_pan_cb.flow_mask = bta_pan_co_init(&bta_pan_cb.q_level);
343 bta_pan_cb.p_cback(BTA_PAN_ENABLE_EVT, NULL);
344
345 }
346
347 /*******************************************************************************
348 **
349 ** Function bta_pan_set_role
350 **
351 ** Description
352 **
353 ** Returns void
354 **
355 *******************************************************************************/
bta_pan_set_role(tBTA_PAN_DATA * p_data)356 void bta_pan_set_role(tBTA_PAN_DATA *p_data)
357 {
358 tPAN_RESULT status;
359 tBTA_PAN_SET_ROLE set_role;
360 UINT8 sec[3];
361
362
363 bta_pan_cb.app_id[0] = p_data->api_set_role.user_app_id;
364 bta_pan_cb.app_id[1] = p_data->api_set_role.gn_app_id;
365 bta_pan_cb.app_id[2] = p_data->api_set_role.nap_app_id;
366
367 sec[0] = p_data->api_set_role.user_sec_mask;
368 sec[1] = p_data->api_set_role.gn_sec_mask;
369 sec[2] = p_data->api_set_role.nap_sec_mask;
370
371 /* set security correctly in api and here */
372 status = PAN_SetRole(p_data->api_set_role.role, sec,
373 p_data->api_set_role.user_name,
374 p_data->api_set_role.gn_name,
375 p_data->api_set_role.nap_name);
376
377 set_role.role = p_data->api_set_role.role;
378 if(status == PAN_SUCCESS)
379 {
380 if(p_data->api_set_role.role & PAN_ROLE_NAP_SERVER )
381 bta_sys_add_uuid(UUID_SERVCLASS_NAP);
382 else
383 bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
384
385 if(p_data->api_set_role.role & PAN_ROLE_GN_SERVER )
386 bta_sys_add_uuid(UUID_SERVCLASS_GN);
387 else
388 bta_sys_remove_uuid(UUID_SERVCLASS_GN);
389
390 if(p_data->api_set_role.role & PAN_ROLE_CLIENT )
391 bta_sys_add_uuid(UUID_SERVCLASS_PANU);
392 else
393 bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
394
395 set_role.status = BTA_PAN_SUCCESS;
396 }
397 /* if status is not success clear everything */
398 else
399 {
400 PAN_SetRole(0, 0, NULL, NULL, NULL);
401 bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
402 bta_sys_remove_uuid(UUID_SERVCLASS_GN);
403 bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
404 set_role.status = BTA_PAN_FAIL;
405 }
406 bta_pan_cb.p_cback(BTA_PAN_SET_ROLE_EVT, (tBTA_PAN *)&set_role);
407 }
408
409
410
411 /*******************************************************************************
412 **
413 ** Function bta_pan_disable
414 **
415 ** Description
416 **
417 **
418 **
419 ** Returns void
420 **
421 *******************************************************************************/
bta_pan_disable(void)422 void bta_pan_disable(void)
423 {
424
425 BT_HDR *p_buf;
426 tBTA_PAN_SCB *p_scb = &bta_pan_cb.scb[0];
427 UINT8 i;
428
429
430 /* close all connections */
431 PAN_SetRole (0, NULL, NULL, NULL, NULL);
432
433 #if ( BTM_EIR_SERVER_INCLUDED == TRUE )&&(BTA_EIR_CANNED_UUID_LIST != TRUE)
434 bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
435 bta_sys_remove_uuid(UUID_SERVCLASS_GN);
436 bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
437 #endif
438 /* free all queued up data buffers */
439 for (i = 0; i < BTA_PAN_NUM_CONN; i++, p_scb++)
440 {
441 if (p_scb->in_use)
442 {
443 while((p_buf = (BT_HDR *)GKI_dequeue(&p_scb->data_queue)) != NULL)
444 GKI_freebuf(p_buf);
445
446 bta_pan_co_close(p_scb->handle, p_scb->app_id);
447
448 }
449 }
450
451
452
453 PAN_Deregister();
454
455 }
456
457 /*******************************************************************************
458 **
459 ** Function bta_pan_open
460 **
461 ** Description
462 **
463 ** Returns void
464 **
465 *******************************************************************************/
bta_pan_open(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)466 void bta_pan_open(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
467 {
468 tPAN_RESULT status;
469 tBTA_PAN_OPEN data;
470 tBTA_PAN_OPENING opening;
471
472
473 status = PAN_Connect (p_data->api_open.bd_addr, p_data->api_open.local_role, p_data->api_open.peer_role,
474 &p_scb->handle);
475 APPL_TRACE_DEBUG("%s pan connect status: %d", __func__, status);
476
477 if(status == PAN_SUCCESS)
478 {
479
480 bdcpy(p_scb->bd_addr, p_data->api_open.bd_addr);
481 p_scb->local_role = p_data->api_open.local_role;
482 p_scb->peer_role = p_data->api_open.peer_role;
483 bdcpy(opening.bd_addr, p_data->api_open.bd_addr);
484 opening.handle = p_scb->handle;
485 bta_pan_cb.p_cback(BTA_PAN_OPENING_EVT, (tBTA_PAN *)&opening);
486
487
488 }
489 else
490 {
491 bta_pan_scb_dealloc(p_scb);
492 bdcpy(data.bd_addr, p_data->api_open.bd_addr);
493 data.status = BTA_PAN_FAIL;
494 data.local_role = p_data->api_open.local_role;
495 data.peer_role = p_data->api_open.peer_role;
496 bta_pan_cb.p_cback(BTA_PAN_OPEN_EVT, (tBTA_PAN *)&data);
497 }
498
499 }
500
501
502 /*******************************************************************************
503 **
504 ** Function bta_pan_close
505 **
506 ** Description
507 **
508 **
509 **
510 ** Returns void
511 **
512 *******************************************************************************/
bta_pan_api_close(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)513 void bta_pan_api_close (tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
514 {
515 tBTA_PAN_CONN * p_buf;
516 UNUSED(p_data);
517
518 PAN_Disconnect (p_scb->handle);
519
520
521 /* send an event to BTA so that application will get the connection
522 close event */
523 if ((p_buf = (tBTA_PAN_CONN *) GKI_getbuf(sizeof(tBTA_PAN_CONN))) != NULL)
524 {
525 p_buf->hdr.event = BTA_PAN_CONN_CLOSE_EVT;
526
527 p_buf->hdr.layer_specific = p_scb->handle;
528 bta_sys_sendmsg(p_buf);
529
530 }
531 }
532
533
534 /*******************************************************************************
535 **
536 ** Function bta_pan_conn_open
537 **
538 ** Description process connection open event
539 **
540 ** Returns void
541 **
542 *******************************************************************************/
bta_pan_conn_open(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)543 void bta_pan_conn_open(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
544 {
545
546 tBTA_PAN_OPEN data;
547
548 APPL_TRACE_DEBUG("%s pan connection result: %d", __func__, p_data->conn.result);
549
550 bdcpy(data.bd_addr, p_scb->bd_addr);
551 data.handle = p_scb->handle;
552 data.local_role = p_scb->local_role;
553 data.peer_role = p_scb->peer_role;
554
555 if(p_data->conn.result == PAN_SUCCESS)
556 {
557 data.status = BTA_PAN_SUCCESS;
558 bta_pan_co_open(p_scb->handle, p_scb->app_id, p_scb->local_role, p_scb->peer_role, p_scb->bd_addr);
559 p_scb->pan_flow_enable = TRUE;
560 p_scb->app_flow_enable = TRUE;
561 bta_sys_conn_open(BTA_ID_PAN ,p_scb->app_id, p_scb->bd_addr);
562 }
563 else
564 {
565 bta_pan_scb_dealloc(p_scb);
566 data.status = BTA_PAN_FAIL;
567 }
568
569 bta_pan_cb.p_cback(BTA_PAN_OPEN_EVT, (tBTA_PAN *)&data);
570
571
572 }
573
574 /*******************************************************************************
575 **
576 ** Function bta_pan_conn_close
577 **
578 ** Description process connection close event
579 **
580 **
581 **
582 ** Returns void
583 **
584 *******************************************************************************/
bta_pan_conn_close(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)585 void bta_pan_conn_close(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
586 {
587
588 tBTA_PAN_CLOSE data;
589 BT_HDR *p_buf;
590
591 data.handle = p_data->hdr.layer_specific;
592
593
594 bta_sys_conn_close( BTA_ID_PAN ,p_scb->app_id, p_scb->bd_addr);
595
596 /* free all queued up data buffers */
597 while((p_buf = (BT_HDR *)GKI_dequeue(&p_scb->data_queue)) != NULL)
598 GKI_freebuf(p_buf);
599
600 GKI_init_q(&p_scb->data_queue);
601
602 bta_pan_co_close(p_scb->handle, p_scb->app_id);
603
604 bta_pan_scb_dealloc(p_scb);
605
606 bta_pan_cb.p_cback(BTA_PAN_CLOSE_EVT, (tBTA_PAN *)&data);
607
608 }
609
610
611
612
613 /*******************************************************************************
614 **
615 ** Function bta_pan_rx_path
616 **
617 ** Description Handle data on the RX path (data sent from the phone to
618 ** BTA).
619 **
620 **
621 ** Returns void
622 **
623 *******************************************************************************/
bta_pan_rx_path(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)624 void bta_pan_rx_path(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
625 {
626 UNUSED(p_data);
627
628 /* if data path configured for rx pull */
629 if ((bta_pan_cb.flow_mask & BTA_PAN_RX_MASK) == BTA_PAN_RX_PULL)
630 {
631 /* if we can accept data */
632 if (p_scb->pan_flow_enable == TRUE)
633 {
634 /* call application callout function for rx path */
635 bta_pan_co_rx_path(p_scb->handle, p_scb->app_id);
636 }
637 }
638 /* else data path configured for rx push */
639 else
640 {
641
642 }
643 }
644
645 /*******************************************************************************
646 **
647 ** Function bta_pan_tx_path
648 **
649 ** Description Handle the TX data path (data sent from BTA to the phone).
650 **
651 **
652 ** Returns void
653 **
654 *******************************************************************************/
bta_pan_tx_path(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)655 void bta_pan_tx_path(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
656 {
657 BT_HDR * p_buf;
658 UNUSED(p_data);
659
660 /* if data path configured for tx pull */
661 if ((bta_pan_cb.flow_mask & BTA_PAN_TX_MASK) == BTA_PAN_TX_PULL)
662 {
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);
666
667 /* free data that exceeds queue level */
668 while(p_scb->data_queue.count > bta_pan_cb.q_level)
669 GKI_freebuf(GKI_dequeue(&p_scb->data_queue));
670 bta_pan_pm_conn_idle(p_scb);
671 }
672 /* if configured for zero copy push */
673 else if ((bta_pan_cb.flow_mask & BTA_PAN_TX_MASK) == BTA_PAN_TX_PUSH_BUF)
674 {
675 /* if app can accept data */
676 if (p_scb->app_flow_enable == TRUE)
677 {
678 /* read data from the queue */
679 if ((p_buf = (BT_HDR *)GKI_dequeue(&p_scb->data_queue)) != NULL)
680 {
681 /* send data to application */
682 bta_pan_co_tx_writebuf(p_scb->handle,
683 p_scb->app_id,
684 ((tBTA_PAN_DATA_PARAMS *)p_buf)->src,
685 ((tBTA_PAN_DATA_PARAMS *)p_buf)->dst,
686 ((tBTA_PAN_DATA_PARAMS *)p_buf)->protocol,
687 p_buf,
688 ((tBTA_PAN_DATA_PARAMS *)p_buf)->ext,
689 ((tBTA_PAN_DATA_PARAMS *)p_buf)->forward);
690
691 }
692 /* free data that exceeds queue level */
693 while(p_scb->data_queue.count > bta_pan_cb.q_level)
694 GKI_freebuf(GKI_dequeue(&p_scb->data_queue));
695
696 /* if there is more data to be passed to
697 upper layer */
698 if(p_scb->data_queue.count)
699 {
700 if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL)
701 {
702 p_buf->layer_specific = p_scb->handle;
703 p_buf->event = BTA_PAN_RX_FROM_BNEP_READY_EVT;
704 bta_sys_sendmsg(p_buf);
705 }
706
707 }
708
709 }
710 }
711 }
712
713 /*******************************************************************************
714 **
715 ** Function bta_pan_tx_flow
716 **
717 ** Description Set the application flow control state.
718 **
719 **
720 ** Returns void
721 **
722 *******************************************************************************/
bta_pan_tx_flow(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)723 void bta_pan_tx_flow(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
724 {
725 p_scb->app_flow_enable = p_data->ci_tx_flow.enable;
726 }
727
728 /*******************************************************************************
729 **
730 ** Function bta_pan_write_buf
731 **
732 ** Description Handle a bta_pan_ci_rx_writebuf() and send data to PAN.
733 **
734 **
735 ** Returns void
736 **
737 *******************************************************************************/
bta_pan_write_buf(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)738 void bta_pan_write_buf(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
739 {
740 if ((bta_pan_cb.flow_mask & BTA_PAN_RX_MASK) == BTA_PAN_RX_PUSH_BUF)
741 {
742 bta_pan_pm_conn_busy(p_scb);
743
744 PAN_WriteBuf (p_scb->handle,
745 ((tBTA_PAN_DATA_PARAMS *)p_data)->dst,
746 ((tBTA_PAN_DATA_PARAMS *)p_data)->src,
747 ((tBTA_PAN_DATA_PARAMS *)p_data)->protocol,
748 (BT_HDR *)p_data,
749 ((tBTA_PAN_DATA_PARAMS *)p_data)->ext);
750 bta_pan_pm_conn_idle(p_scb);
751
752 }
753 }
754
755 /*******************************************************************************
756 **
757 ** Function bta_pan_free_buf
758 **
759 ** Description Frees the data buffer during closing state
760 **
761 **
762 ** Returns void
763 **
764 *******************************************************************************/
bta_pan_free_buf(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)765 void bta_pan_free_buf(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
766 {
767 UNUSED(p_scb);
768
769 GKI_freebuf(p_data);
770
771 }
772
773 #endif /* PAN_INCLUDED */
774