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 "gki.h"
32 #include "pan_api.h"
33 #include "bta_pan_api.h"
34 #include "bta_pan_int.h"
35 #include "bta_pan_co.h"
36 #include <string.h>
37 #include "utl.h"
38
39
40 /* RX and TX data flow mask */
41 #define BTA_PAN_RX_MASK 0x0F
42 #define BTA_PAN_TX_MASK 0xF0
43
44 /*******************************************************************************
45 **
46 ** Function bta_pan_pm_conn_busy
47 **
48 ** Description set pan pm connection busy state
49 **
50 ** Params p_scb: state machine control block of pan connection
51 **
52 ** Returns void
53 **
54 *******************************************************************************/
bta_pan_pm_conn_busy(tBTA_PAN_SCB * p_scb)55 static void bta_pan_pm_conn_busy(tBTA_PAN_SCB *p_scb)
56 {
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);
59 }
60
61 /*******************************************************************************
62 **
63 ** Function bta_pan_pm_conn_idle
64 **
65 ** Description set pan pm connection idle state
66 **
67 ** Params p_scb: state machine control block of pan connection
68 **
69 ** Returns void
70 **
71 *******************************************************************************/
bta_pan_pm_conn_idle(tBTA_PAN_SCB * p_scb)72 static void bta_pan_pm_conn_idle(tBTA_PAN_SCB *p_scb)
73 {
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);
76 }
77
78 /*******************************************************************************
79 **
80 ** Function bta_pan_conn_state_cback
81 **
82 ** Description Connection state callback from Pan profile
83 **
84 **
85 ** Returns void
86 **
87 *******************************************************************************/
bta_pan_conn_state_cback(UINT16 handle,BD_ADDR bd_addr,tPAN_RESULT state,BOOLEAN is_role_change,UINT8 src_role,UINT8 dst_role)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)
90 {
91
92 tBTA_PAN_CONN * p_buf;
93 tBTA_PAN_SCB *p_scb;
94
95
96 if ((p_buf = (tBTA_PAN_CONN *) GKI_getbuf(sizeof(tBTA_PAN_CONN))) != NULL)
97 {
98 if((state == PAN_SUCCESS) && !is_role_change)
99 {
100 p_buf->hdr.event = BTA_PAN_CONN_OPEN_EVT;
101 if((p_scb = bta_pan_scb_by_handle(handle)) == NULL)
102 {
103 /* allocate an scb */
104 p_scb = bta_pan_scb_alloc();
105
106 }
107 /* we have exceeded maximum number of connections */
108 if(!p_scb)
109 {
110 PAN_Disconnect (handle);
111 return;
112 }
113
114 p_scb->handle = handle;
115 p_scb->local_role = src_role;
116 p_scb->peer_role = dst_role;
117 p_scb->pan_flow_enable = TRUE;
118 bdcpy(p_scb->bd_addr, bd_addr);
119 GKI_init_q(&p_scb->data_queue);
120
121 if(src_role == PAN_ROLE_CLIENT)
122 p_scb->app_id = bta_pan_cb.app_id[0];
123 else if (src_role == PAN_ROLE_GN_SERVER)
124 p_scb->app_id = bta_pan_cb.app_id[1];
125 else if (src_role == PAN_ROLE_NAP_SERVER)
126 p_scb->app_id = bta_pan_cb.app_id[2];
127
128 }
129 else if((state != PAN_SUCCESS) && !is_role_change)
130 {
131 p_buf->hdr.event = BTA_PAN_CONN_CLOSE_EVT;
132
133 }
134 else
135 {
136 return;
137 }
138
139 p_buf->result = state;
140 p_buf->hdr.layer_specific = handle;
141 bta_sys_sendmsg(p_buf);
142
143 }
144
145
146
147 }
148
149 /*******************************************************************************
150 **
151 ** Function bta_pan_data_flow_cb
152 **
153 ** Description Data flow status callback from PAN
154 **
155 **
156 ** Returns void
157 **
158 *******************************************************************************/
bta_pan_data_flow_cb(UINT16 handle,tPAN_RESULT result)159 static void bta_pan_data_flow_cb(UINT16 handle, tPAN_RESULT result)
160 {
161 BT_HDR *p_buf;
162 tBTA_PAN_SCB *p_scb;
163
164 if((p_scb = bta_pan_scb_by_handle(handle)) == NULL)
165 return;
166
167 if(result == PAN_TX_FLOW_ON)
168 {
169 if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL)
170 {
171 p_buf->layer_specific = handle;
172 p_buf->event = BTA_PAN_BNEP_FLOW_ENABLE_EVT;
173 bta_sys_sendmsg(p_buf);
174 }
175 bta_pan_co_rx_flow(handle, p_scb->app_id, TRUE);
176
177 }
178 else if(result == PAN_TX_FLOW_OFF)
179 {
180
181 p_scb->pan_flow_enable = FALSE;
182 bta_pan_co_rx_flow(handle, p_scb->app_id, FALSE);
183
184 }
185
186
187 }
188
189
190 /*******************************************************************************
191 **
192 ** Function bta_pan_data_buf_ind_cback
193 **
194 ** Description data indication callback from pan profile
195 **
196 **
197 ** Returns void
198 **
199 *******************************************************************************/
bta_pan_data_buf_ind_cback(UINT16 handle,BD_ADDR src,BD_ADDR dst,UINT16 protocol,BT_HDR * p_buf,BOOLEAN ext,BOOLEAN forward)200 static void bta_pan_data_buf_ind_cback(UINT16 handle, BD_ADDR src, BD_ADDR dst, UINT16 protocol, BT_HDR *p_buf,
201 BOOLEAN ext, BOOLEAN forward)
202 {
203 tBTA_PAN_SCB *p_scb;
204 BT_HDR * p_event;
205 BT_HDR *p_new_buf;
206
207 if ( sizeof(tBTA_PAN_DATA_PARAMS) > p_buf->offset )
208 {
209 /* offset smaller than data structure in front of actual data */
210 p_new_buf = (BT_HDR *)GKI_getpoolbuf( PAN_POOL_ID );
211 if(!p_new_buf)
212 {
213 APPL_TRACE_WARNING("Cannot get a PAN GKI buffer");
214 GKI_freebuf( p_buf );
215 return;
216 }
217 else
218 {
219 memcpy( (UINT8 *)(p_new_buf+1)+sizeof(tBTA_PAN_DATA_PARAMS), (UINT8 *)(p_buf+1)+p_buf->offset, p_buf->len );
220 p_new_buf->len = p_buf->len;
221 p_new_buf->offset = sizeof(tBTA_PAN_DATA_PARAMS);
222 GKI_freebuf( p_buf );
223 }
224 }
225 else
226 {
227 p_new_buf = p_buf;
228 }
229 /* copy params into the space before the data */
230 bdcpy(((tBTA_PAN_DATA_PARAMS *)p_new_buf)->src, src);
231 bdcpy(((tBTA_PAN_DATA_PARAMS *)p_new_buf)->dst, dst);
232 ((tBTA_PAN_DATA_PARAMS *)p_new_buf)->protocol = protocol;
233 ((tBTA_PAN_DATA_PARAMS *)p_new_buf)->ext = ext;
234 ((tBTA_PAN_DATA_PARAMS *)p_new_buf)->forward = forward;
235
236
237 if((p_scb = bta_pan_scb_by_handle(handle)) == NULL)
238 {
239
240 GKI_freebuf( p_new_buf );
241 return;
242 }
243
244 GKI_enqueue(&p_scb->data_queue, p_new_buf);
245 if ((p_event = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL)
246 {
247 p_event->layer_specific = handle;
248 p_event->event = BTA_PAN_RX_FROM_BNEP_READY_EVT;
249 bta_sys_sendmsg(p_event);
250 }
251
252 }
253
254
255 /*******************************************************************************
256 **
257 ** Function bta_pan_pfilt_ind_cback
258 **
259 ** Description
260 **
261 **
262 ** Returns void
263 **
264 *******************************************************************************/
bta_pan_pfilt_ind_cback(UINT16 handle,BOOLEAN indication,tBNEP_RESULT result,UINT16 num_filters,UINT8 * p_filters)265 static void bta_pan_pfilt_ind_cback(UINT16 handle, BOOLEAN indication,tBNEP_RESULT result,
266 UINT16 num_filters, UINT8 *p_filters)
267 {
268
269 bta_pan_co_pfilt_ind(handle, indication, (tBTA_PAN_STATUS)((result == BNEP_SUCCESS) ? BTA_PAN_SUCCESS : BTA_PAN_FAIL),
270 num_filters, p_filters);
271
272
273 }
274
275
276 /*******************************************************************************
277 **
278 ** Function bta_pan_mfilt_ind_cback
279 **
280 ** Description
281 **
282 **
283 ** Returns void
284 **
285 *******************************************************************************/
bta_pan_mfilt_ind_cback(UINT16 handle,BOOLEAN indication,tBNEP_RESULT result,UINT16 num_mfilters,UINT8 * p_mfilters)286 static void bta_pan_mfilt_ind_cback(UINT16 handle, BOOLEAN indication,tBNEP_RESULT result,
287 UINT16 num_mfilters, UINT8 *p_mfilters)
288 {
289
290 bta_pan_co_mfilt_ind(handle, indication, (tBTA_PAN_STATUS)((result == BNEP_SUCCESS) ? BTA_PAN_SUCCESS : BTA_PAN_FAIL),
291 num_mfilters, p_mfilters);
292 }
293
294
295
296 /*******************************************************************************
297 **
298 ** Function bta_pan_enable
299 **
300 ** Description
301 **
302 **
303 **
304 ** Returns void
305 **
306 *******************************************************************************/
bta_pan_enable(tBTA_PAN_DATA * p_data)307 void bta_pan_enable(tBTA_PAN_DATA *p_data)
308 {
309 tPAN_REGISTER reg_data;
310 UINT16 initial_discoverability;
311 UINT16 initial_connectability;
312 UINT16 d_window;
313 UINT16 d_interval;
314 UINT16 c_window;
315 UINT16 c_interval;
316
317 bta_pan_cb.p_cback = p_data->api_enable.p_cback;
318
319 reg_data.pan_conn_state_cb = bta_pan_conn_state_cback;
320 reg_data.pan_bridge_req_cb = NULL;
321 reg_data.pan_data_buf_ind_cb = bta_pan_data_buf_ind_cback;
322 reg_data.pan_data_ind_cb = NULL;
323 reg_data.pan_pfilt_ind_cb = bta_pan_pfilt_ind_cback;
324 reg_data.pan_mfilt_ind_cb = bta_pan_mfilt_ind_cback;
325 reg_data.pan_tx_data_flow_cb = bta_pan_data_flow_cb;
326
327 /* read connectability and discoverability settings.
328 Pan profile changes the settings. We have to change it back to
329 be consistent with other bta subsystems */
330 initial_connectability = BTM_ReadConnectability(&c_window, &c_interval);
331 initial_discoverability = BTM_ReadDiscoverability(&d_window, &d_interval);
332
333
334 PAN_Register (®_data);
335
336
337 /* set it back to original value */
338 BTM_SetDiscoverability(initial_discoverability, d_window, d_interval);
339 BTM_SetConnectability(initial_connectability, c_window, c_interval);
340
341 bta_pan_cb.flow_mask = bta_pan_co_init(&bta_pan_cb.q_level);
342 bta_pan_cb.p_cback(BTA_PAN_ENABLE_EVT, NULL);
343
344 }
345
346 /*******************************************************************************
347 **
348 ** Function bta_pan_set_role
349 **
350 ** Description
351 **
352 ** Returns void
353 **
354 *******************************************************************************/
bta_pan_set_role(tBTA_PAN_DATA * p_data)355 void bta_pan_set_role(tBTA_PAN_DATA *p_data)
356 {
357 tPAN_RESULT status;
358 tBTA_PAN_SET_ROLE set_role;
359 UINT8 sec[3];
360
361
362 bta_pan_cb.app_id[0] = p_data->api_set_role.user_app_id;
363 bta_pan_cb.app_id[1] = p_data->api_set_role.gn_app_id;
364 bta_pan_cb.app_id[2] = p_data->api_set_role.nap_app_id;
365
366 sec[0] = p_data->api_set_role.user_sec_mask;
367 sec[1] = p_data->api_set_role.gn_sec_mask;
368 sec[2] = p_data->api_set_role.nap_sec_mask;
369
370 /* set security correctly in api and here */
371 status = PAN_SetRole(p_data->api_set_role.role, sec,
372 p_data->api_set_role.user_name,
373 p_data->api_set_role.gn_name,
374 p_data->api_set_role.nap_name);
375
376 set_role.role = p_data->api_set_role.role;
377 if(status == PAN_SUCCESS)
378 {
379 if(p_data->api_set_role.role & PAN_ROLE_NAP_SERVER )
380 bta_sys_add_uuid(UUID_SERVCLASS_NAP);
381 else
382 bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
383
384 if(p_data->api_set_role.role & PAN_ROLE_GN_SERVER )
385 bta_sys_add_uuid(UUID_SERVCLASS_GN);
386 else
387 bta_sys_remove_uuid(UUID_SERVCLASS_GN);
388
389 if(p_data->api_set_role.role & PAN_ROLE_CLIENT )
390 bta_sys_add_uuid(UUID_SERVCLASS_PANU);
391 else
392 bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
393
394 set_role.status = BTA_PAN_SUCCESS;
395 }
396 /* if status is not success clear everything */
397 else
398 {
399 PAN_SetRole(0, 0, NULL, NULL, NULL);
400 bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
401 bta_sys_remove_uuid(UUID_SERVCLASS_GN);
402 bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
403 set_role.status = BTA_PAN_FAIL;
404 }
405 bta_pan_cb.p_cback(BTA_PAN_SET_ROLE_EVT, (tBTA_PAN *)&set_role);
406 }
407
408
409
410 /*******************************************************************************
411 **
412 ** Function bta_pan_disable
413 **
414 ** Description
415 **
416 **
417 **
418 ** Returns void
419 **
420 *******************************************************************************/
bta_pan_disable(void)421 void bta_pan_disable(void)
422 {
423
424 BT_HDR *p_buf;
425 tBTA_PAN_SCB *p_scb = &bta_pan_cb.scb[0];
426 UINT8 i;
427
428
429 /* close all connections */
430 PAN_SetRole (0, NULL, NULL, NULL, NULL);
431
432 #if (BTA_EIR_CANNED_UUID_LIST != TRUE)
433 bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
434 bta_sys_remove_uuid(UUID_SERVCLASS_GN);
435 bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
436 #endif // BTA_EIR_CANNED_UUID_LIST
437 /* free all queued up data buffers */
438 for (i = 0; i < BTA_PAN_NUM_CONN; i++, p_scb++)
439 {
440 if (p_scb->in_use)
441 {
442 while((p_buf = (BT_HDR *)GKI_dequeue(&p_scb->data_queue)) != NULL)
443 GKI_freebuf(p_buf);
444
445 bta_pan_co_close(p_scb->handle, p_scb->app_id);
446
447 }
448 }
449
450
451
452 PAN_Deregister();
453
454 }
455
456 /*******************************************************************************
457 **
458 ** Function bta_pan_open
459 **
460 ** Description
461 **
462 ** Returns void
463 **
464 *******************************************************************************/
bta_pan_open(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)465 void bta_pan_open(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
466 {
467 tPAN_RESULT status;
468 tBTA_PAN_OPEN data;
469 tBTA_PAN_OPENING opening;
470
471
472 status = PAN_Connect (p_data->api_open.bd_addr, p_data->api_open.local_role, p_data->api_open.peer_role,
473 &p_scb->handle);
474 APPL_TRACE_DEBUG("%s pan connect status: %d", __func__, status);
475
476 if(status == PAN_SUCCESS)
477 {
478
479 bdcpy(p_scb->bd_addr, p_data->api_open.bd_addr);
480 p_scb->local_role = p_data->api_open.local_role;
481 p_scb->peer_role = p_data->api_open.peer_role;
482 bdcpy(opening.bd_addr, p_data->api_open.bd_addr);
483 opening.handle = p_scb->handle;
484 bta_pan_cb.p_cback(BTA_PAN_OPENING_EVT, (tBTA_PAN *)&opening);
485
486
487 }
488 else
489 {
490 bta_pan_scb_dealloc(p_scb);
491 bdcpy(data.bd_addr, p_data->api_open.bd_addr);
492 data.status = BTA_PAN_FAIL;
493 data.local_role = p_data->api_open.local_role;
494 data.peer_role = p_data->api_open.peer_role;
495 bta_pan_cb.p_cback(BTA_PAN_OPEN_EVT, (tBTA_PAN *)&data);
496 }
497
498 }
499
500
501 /*******************************************************************************
502 **
503 ** Function bta_pan_close
504 **
505 ** Description
506 **
507 **
508 **
509 ** Returns void
510 **
511 *******************************************************************************/
bta_pan_api_close(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)512 void bta_pan_api_close (tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
513 {
514 tBTA_PAN_CONN * p_buf;
515 UNUSED(p_data);
516
517 PAN_Disconnect (p_scb->handle);
518
519
520 /* send an event to BTA so that application will get the connection
521 close event */
522 if ((p_buf = (tBTA_PAN_CONN *) GKI_getbuf(sizeof(tBTA_PAN_CONN))) != NULL)
523 {
524 p_buf->hdr.event = BTA_PAN_CONN_CLOSE_EVT;
525
526 p_buf->hdr.layer_specific = p_scb->handle;
527 bta_sys_sendmsg(p_buf);
528
529 }
530 }
531
532
533 /*******************************************************************************
534 **
535 ** Function bta_pan_conn_open
536 **
537 ** Description process connection open event
538 **
539 ** Returns void
540 **
541 *******************************************************************************/
bta_pan_conn_open(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)542 void bta_pan_conn_open(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
543 {
544
545 tBTA_PAN_OPEN data;
546
547 APPL_TRACE_DEBUG("%s pan connection result: %d", __func__, p_data->conn.result);
548
549 bdcpy(data.bd_addr, p_scb->bd_addr);
550 data.handle = p_scb->handle;
551 data.local_role = p_scb->local_role;
552 data.peer_role = p_scb->peer_role;
553
554 if(p_data->conn.result == PAN_SUCCESS)
555 {
556 data.status = BTA_PAN_SUCCESS;
557 bta_pan_co_open(p_scb->handle, p_scb->app_id, p_scb->local_role, p_scb->peer_role, p_scb->bd_addr);
558 p_scb->pan_flow_enable = TRUE;
559 p_scb->app_flow_enable = TRUE;
560 bta_sys_conn_open(BTA_ID_PAN ,p_scb->app_id, p_scb->bd_addr);
561 }
562 else
563 {
564 bta_pan_scb_dealloc(p_scb);
565 data.status = BTA_PAN_FAIL;
566 }
567
568 bta_pan_cb.p_cback(BTA_PAN_OPEN_EVT, (tBTA_PAN *)&data);
569
570
571 }
572
573 /*******************************************************************************
574 **
575 ** Function bta_pan_conn_close
576 **
577 ** Description process connection close event
578 **
579 **
580 **
581 ** Returns void
582 **
583 *******************************************************************************/
bta_pan_conn_close(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)584 void bta_pan_conn_close(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
585 {
586
587 tBTA_PAN_CLOSE data;
588 BT_HDR *p_buf;
589
590 data.handle = p_data->hdr.layer_specific;
591
592
593 bta_sys_conn_close( BTA_ID_PAN ,p_scb->app_id, p_scb->bd_addr);
594
595 /* free all queued up data buffers */
596 while((p_buf = (BT_HDR *)GKI_dequeue(&p_scb->data_queue)) != NULL)
597 GKI_freebuf(p_buf);
598
599 GKI_init_q(&p_scb->data_queue);
600
601 bta_pan_co_close(p_scb->handle, p_scb->app_id);
602
603 bta_pan_scb_dealloc(p_scb);
604
605 bta_pan_cb.p_cback(BTA_PAN_CLOSE_EVT, (tBTA_PAN *)&data);
606
607 }
608
609
610
611
612 /*******************************************************************************
613 **
614 ** Function bta_pan_rx_path
615 **
616 ** Description Handle data on the RX path (data sent from the phone to
617 ** BTA).
618 **
619 **
620 ** Returns void
621 **
622 *******************************************************************************/
bta_pan_rx_path(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)623 void bta_pan_rx_path(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
624 {
625 UNUSED(p_data);
626
627 /* if data path configured for rx pull */
628 if ((bta_pan_cb.flow_mask & BTA_PAN_RX_MASK) == BTA_PAN_RX_PULL)
629 {
630 /* if we can accept data */
631 if (p_scb->pan_flow_enable == TRUE)
632 {
633 /* call application callout function for rx path */
634 bta_pan_co_rx_path(p_scb->handle, p_scb->app_id);
635 }
636 }
637 /* else data path configured for rx push */
638 else
639 {
640
641 }
642 }
643
644 /*******************************************************************************
645 **
646 ** Function bta_pan_tx_path
647 **
648 ** Description Handle the TX data path (data sent from BTA to the phone).
649 **
650 **
651 ** Returns void
652 **
653 *******************************************************************************/
bta_pan_tx_path(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)654 void bta_pan_tx_path(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
655 {
656 BT_HDR * p_buf;
657 UNUSED(p_data);
658
659 /* if data path configured for tx pull */
660 if ((bta_pan_cb.flow_mask & BTA_PAN_TX_MASK) == BTA_PAN_TX_PULL)
661 {
662 bta_pan_pm_conn_busy(p_scb);
663 /* call application callout function for tx path */
664 bta_pan_co_tx_path(p_scb->handle, p_scb->app_id);
665
666 /* free data that exceeds queue level */
667 while(GKI_queue_length(&p_scb->data_queue) > bta_pan_cb.q_level)
668 GKI_freebuf(GKI_dequeue(&p_scb->data_queue));
669 bta_pan_pm_conn_idle(p_scb);
670 }
671 /* if configured for zero copy push */
672 else if ((bta_pan_cb.flow_mask & BTA_PAN_TX_MASK) == BTA_PAN_TX_PUSH_BUF)
673 {
674 /* if app can accept data */
675 if (p_scb->app_flow_enable == TRUE)
676 {
677 /* read data from the queue */
678 if ((p_buf = (BT_HDR *)GKI_dequeue(&p_scb->data_queue)) != NULL)
679 {
680 /* send data to application */
681 bta_pan_co_tx_writebuf(p_scb->handle,
682 p_scb->app_id,
683 ((tBTA_PAN_DATA_PARAMS *)p_buf)->src,
684 ((tBTA_PAN_DATA_PARAMS *)p_buf)->dst,
685 ((tBTA_PAN_DATA_PARAMS *)p_buf)->protocol,
686 p_buf,
687 ((tBTA_PAN_DATA_PARAMS *)p_buf)->ext,
688 ((tBTA_PAN_DATA_PARAMS *)p_buf)->forward);
689
690 }
691 /* free data that exceeds queue level */
692 while(GKI_queue_length(&p_scb->data_queue) > bta_pan_cb.q_level)
693 GKI_freebuf(GKI_dequeue(&p_scb->data_queue));
694
695 /* if there is more data to be passed to
696 upper layer */
697 if(!GKI_queue_is_empty(&p_scb->data_queue))
698 {
699 if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL)
700 {
701 p_buf->layer_specific = p_scb->handle;
702 p_buf->event = BTA_PAN_RX_FROM_BNEP_READY_EVT;
703 bta_sys_sendmsg(p_buf);
704 }
705
706 }
707
708 }
709 }
710 }
711
712 /*******************************************************************************
713 **
714 ** Function bta_pan_tx_flow
715 **
716 ** Description Set the application flow control state.
717 **
718 **
719 ** Returns void
720 **
721 *******************************************************************************/
bta_pan_tx_flow(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)722 void bta_pan_tx_flow(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
723 {
724 p_scb->app_flow_enable = p_data->ci_tx_flow.enable;
725 }
726
727 /*******************************************************************************
728 **
729 ** Function bta_pan_write_buf
730 **
731 ** Description Handle a bta_pan_ci_rx_writebuf() and send data to PAN.
732 **
733 **
734 ** Returns void
735 **
736 *******************************************************************************/
bta_pan_write_buf(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)737 void bta_pan_write_buf(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
738 {
739 if ((bta_pan_cb.flow_mask & BTA_PAN_RX_MASK) == BTA_PAN_RX_PUSH_BUF)
740 {
741 bta_pan_pm_conn_busy(p_scb);
742
743 PAN_WriteBuf (p_scb->handle,
744 ((tBTA_PAN_DATA_PARAMS *)p_data)->dst,
745 ((tBTA_PAN_DATA_PARAMS *)p_data)->src,
746 ((tBTA_PAN_DATA_PARAMS *)p_data)->protocol,
747 (BT_HDR *)p_data,
748 ((tBTA_PAN_DATA_PARAMS *)p_data)->ext);
749 bta_pan_pm_conn_idle(p_scb);
750
751 }
752 }
753
754 /*******************************************************************************
755 **
756 ** Function bta_pan_free_buf
757 **
758 ** Description Frees the data buffer during closing state
759 **
760 **
761 ** Returns void
762 **
763 *******************************************************************************/
bta_pan_free_buf(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)764 void bta_pan_free_buf(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
765 {
766 UNUSED(p_scb);
767
768 GKI_freebuf(p_data);
769
770 }
771
772 #endif /* PAN_INCLUDED */
773