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_has_multiple_connections
299 **
300 ** Description Check whether there are multiple GN/NAP connections to
301 ** different devices
302 **
303 **
304 ** Returns BOOLEAN
305 **
306 *******************************************************************************/
bta_pan_has_multiple_connections(UINT8 app_id)307 static BOOLEAN bta_pan_has_multiple_connections(UINT8 app_id)
308 {
309 tBTA_PAN_SCB *p_scb = NULL;
310 BOOLEAN found = FALSE;
311 BD_ADDR bd_addr;
312
313 for (UINT8 index = 0; index < BTA_PAN_NUM_CONN; index++)
314 {
315 p_scb = &bta_pan_cb.scb[index];
316 if (p_scb->in_use == TRUE && app_id == p_scb->app_id)
317 {
318 /* save temp bd_addr */
319 bdcpy(bd_addr, p_scb->bd_addr);
320 found = TRUE;
321 break;
322 }
323 }
324
325 /* If cannot find a match then there is no connection at all */
326 if (found == FALSE)
327 return FALSE;
328
329 /* Find whether there is another connection with different device other than PANU.
330 Could be same service or different service */
331 for (UINT8 index = 0; index < BTA_PAN_NUM_CONN; index++)
332 {
333 p_scb = &bta_pan_cb.scb[index];
334 if (p_scb->in_use == TRUE && p_scb->app_id != bta_pan_cb.app_id[0] &&
335 bdcmp(bd_addr, p_scb->bd_addr))
336 {
337 return TRUE;
338 }
339 }
340 return FALSE;
341 }
342
343 /*******************************************************************************
344 **
345 ** Function bta_pan_enable
346 **
347 ** Description
348 **
349 **
350 **
351 ** Returns void
352 **
353 *******************************************************************************/
bta_pan_enable(tBTA_PAN_DATA * p_data)354 void bta_pan_enable(tBTA_PAN_DATA *p_data)
355 {
356 tPAN_REGISTER reg_data;
357 UINT16 initial_discoverability;
358 UINT16 initial_connectability;
359 UINT16 d_window;
360 UINT16 d_interval;
361 UINT16 c_window;
362 UINT16 c_interval;
363
364 bta_pan_cb.p_cback = p_data->api_enable.p_cback;
365
366 reg_data.pan_conn_state_cb = bta_pan_conn_state_cback;
367 reg_data.pan_bridge_req_cb = NULL;
368 reg_data.pan_data_buf_ind_cb = bta_pan_data_buf_ind_cback;
369 reg_data.pan_data_ind_cb = NULL;
370 reg_data.pan_pfilt_ind_cb = bta_pan_pfilt_ind_cback;
371 reg_data.pan_mfilt_ind_cb = bta_pan_mfilt_ind_cback;
372 reg_data.pan_tx_data_flow_cb = bta_pan_data_flow_cb;
373
374 /* read connectability and discoverability settings.
375 Pan profile changes the settings. We have to change it back to
376 be consistent with other bta subsystems */
377 initial_connectability = BTM_ReadConnectability(&c_window, &c_interval);
378 initial_discoverability = BTM_ReadDiscoverability(&d_window, &d_interval);
379
380
381 PAN_Register (®_data);
382
383
384 /* set it back to original value */
385 BTM_SetDiscoverability(initial_discoverability, d_window, d_interval);
386 BTM_SetConnectability(initial_connectability, c_window, c_interval);
387
388 bta_pan_cb.flow_mask = bta_pan_co_init(&bta_pan_cb.q_level);
389 bta_pan_cb.p_cback(BTA_PAN_ENABLE_EVT, NULL);
390
391 }
392
393 /*******************************************************************************
394 **
395 ** Function bta_pan_set_role
396 **
397 ** Description
398 **
399 ** Returns void
400 **
401 *******************************************************************************/
bta_pan_set_role(tBTA_PAN_DATA * p_data)402 void bta_pan_set_role(tBTA_PAN_DATA *p_data)
403 {
404 tPAN_RESULT status;
405 tBTA_PAN_SET_ROLE set_role;
406 UINT8 sec[3];
407
408
409 bta_pan_cb.app_id[0] = p_data->api_set_role.user_app_id;
410 bta_pan_cb.app_id[1] = p_data->api_set_role.gn_app_id;
411 bta_pan_cb.app_id[2] = p_data->api_set_role.nap_app_id;
412
413 sec[0] = p_data->api_set_role.user_sec_mask;
414 sec[1] = p_data->api_set_role.gn_sec_mask;
415 sec[2] = p_data->api_set_role.nap_sec_mask;
416
417 /* set security correctly in api and here */
418 status = PAN_SetRole(p_data->api_set_role.role, sec,
419 p_data->api_set_role.user_name,
420 p_data->api_set_role.gn_name,
421 p_data->api_set_role.nap_name);
422
423 set_role.role = p_data->api_set_role.role;
424 if(status == PAN_SUCCESS)
425 {
426 if(p_data->api_set_role.role & PAN_ROLE_NAP_SERVER )
427 bta_sys_add_uuid(UUID_SERVCLASS_NAP);
428 else
429 bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
430
431 if(p_data->api_set_role.role & PAN_ROLE_GN_SERVER )
432 bta_sys_add_uuid(UUID_SERVCLASS_GN);
433 else
434 bta_sys_remove_uuid(UUID_SERVCLASS_GN);
435
436 if(p_data->api_set_role.role & PAN_ROLE_CLIENT )
437 bta_sys_add_uuid(UUID_SERVCLASS_PANU);
438 else
439 bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
440
441 set_role.status = BTA_PAN_SUCCESS;
442 }
443 /* if status is not success clear everything */
444 else
445 {
446 PAN_SetRole(0, 0, NULL, NULL, NULL);
447 bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
448 bta_sys_remove_uuid(UUID_SERVCLASS_GN);
449 bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
450 set_role.status = BTA_PAN_FAIL;
451 }
452 bta_pan_cb.p_cback(BTA_PAN_SET_ROLE_EVT, (tBTA_PAN *)&set_role);
453 }
454
455
456
457 /*******************************************************************************
458 **
459 ** Function bta_pan_disable
460 **
461 ** Description
462 **
463 **
464 **
465 ** Returns void
466 **
467 *******************************************************************************/
bta_pan_disable(void)468 void bta_pan_disable(void)
469 {
470
471 BT_HDR *p_buf;
472 tBTA_PAN_SCB *p_scb = &bta_pan_cb.scb[0];
473 UINT8 i;
474
475
476 /* close all connections */
477 PAN_SetRole (0, NULL, NULL, NULL, NULL);
478
479 #if (BTA_EIR_CANNED_UUID_LIST != TRUE)
480 bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
481 bta_sys_remove_uuid(UUID_SERVCLASS_GN);
482 bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
483 #endif // BTA_EIR_CANNED_UUID_LIST
484 /* free all queued up data buffers */
485 for (i = 0; i < BTA_PAN_NUM_CONN; i++, p_scb++)
486 {
487 if (p_scb->in_use)
488 {
489 while((p_buf = (BT_HDR *)GKI_dequeue(&p_scb->data_queue)) != NULL)
490 GKI_freebuf(p_buf);
491
492 bta_pan_co_close(p_scb->handle, p_scb->app_id);
493
494 }
495 }
496
497
498
499 PAN_Deregister();
500
501 }
502
503 /*******************************************************************************
504 **
505 ** Function bta_pan_open
506 **
507 ** Description
508 **
509 ** Returns void
510 **
511 *******************************************************************************/
bta_pan_open(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)512 void bta_pan_open(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
513 {
514 tPAN_RESULT status;
515 tBTA_PAN_OPEN data;
516 tBTA_PAN_OPENING opening;
517
518
519 status = PAN_Connect (p_data->api_open.bd_addr, p_data->api_open.local_role, p_data->api_open.peer_role,
520 &p_scb->handle);
521 APPL_TRACE_DEBUG("%s pan connect status: %d", __func__, status);
522
523 if(status == PAN_SUCCESS)
524 {
525
526 bdcpy(p_scb->bd_addr, p_data->api_open.bd_addr);
527 p_scb->local_role = p_data->api_open.local_role;
528 p_scb->peer_role = p_data->api_open.peer_role;
529 bdcpy(opening.bd_addr, p_data->api_open.bd_addr);
530 opening.handle = p_scb->handle;
531 bta_pan_cb.p_cback(BTA_PAN_OPENING_EVT, (tBTA_PAN *)&opening);
532
533
534 }
535 else
536 {
537 bta_pan_scb_dealloc(p_scb);
538 bdcpy(data.bd_addr, p_data->api_open.bd_addr);
539 data.status = BTA_PAN_FAIL;
540 data.local_role = p_data->api_open.local_role;
541 data.peer_role = p_data->api_open.peer_role;
542 bta_pan_cb.p_cback(BTA_PAN_OPEN_EVT, (tBTA_PAN *)&data);
543 }
544
545 }
546
547
548 /*******************************************************************************
549 **
550 ** Function bta_pan_close
551 **
552 ** Description
553 **
554 **
555 **
556 ** Returns void
557 **
558 *******************************************************************************/
bta_pan_api_close(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)559 void bta_pan_api_close (tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
560 {
561 tBTA_PAN_CONN * p_buf;
562 UNUSED(p_data);
563
564 PAN_Disconnect (p_scb->handle);
565
566
567 /* send an event to BTA so that application will get the connection
568 close event */
569 if ((p_buf = (tBTA_PAN_CONN *) GKI_getbuf(sizeof(tBTA_PAN_CONN))) != NULL)
570 {
571 p_buf->hdr.event = BTA_PAN_CONN_CLOSE_EVT;
572
573 p_buf->hdr.layer_specific = p_scb->handle;
574 bta_sys_sendmsg(p_buf);
575
576 }
577 }
578
579
580 /*******************************************************************************
581 **
582 ** Function bta_pan_conn_open
583 **
584 ** Description process connection open event
585 **
586 ** Returns void
587 **
588 *******************************************************************************/
bta_pan_conn_open(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)589 void bta_pan_conn_open(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
590 {
591
592 tBTA_PAN_OPEN data;
593
594 APPL_TRACE_DEBUG("%s pan connection result: %d", __func__, p_data->conn.result);
595
596 bdcpy(data.bd_addr, p_scb->bd_addr);
597 data.handle = p_scb->handle;
598 data.local_role = p_scb->local_role;
599 data.peer_role = p_scb->peer_role;
600
601 if(p_data->conn.result == PAN_SUCCESS)
602 {
603 data.status = BTA_PAN_SUCCESS;
604 p_scb->pan_flow_enable = TRUE;
605 p_scb->app_flow_enable = TRUE;
606 bta_sys_conn_open(BTA_ID_PAN ,p_scb->app_id, p_scb->bd_addr);
607 }
608 else
609 {
610 bta_pan_scb_dealloc(p_scb);
611 data.status = BTA_PAN_FAIL;
612 }
613
614 p_scb->pan_flow_enable = TRUE;
615 p_scb->app_flow_enable = TRUE;
616
617 /* If app_id is NAP/GN, check whether there are multiple connections.
618 If there are, provide a special app_id to dm to enforce master role only. */
619 if ((p_scb->app_id == bta_pan_cb.app_id[1] || p_scb->app_id == bta_pan_cb.app_id[2]) &&
620 bta_pan_has_multiple_connections(p_scb->app_id))
621 {
622 p_scb->app_id = BTA_APP_ID_PAN_MULTI;
623 }
624
625 bta_sys_conn_open(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr);
626 bta_pan_cb.p_cback(BTA_PAN_OPEN_EVT, (tBTA_PAN *)&data);
627
628
629 }
630
631 /*******************************************************************************
632 **
633 ** Function bta_pan_conn_close
634 **
635 ** Description process connection close event
636 **
637 **
638 **
639 ** Returns void
640 **
641 *******************************************************************************/
bta_pan_conn_close(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)642 void bta_pan_conn_close(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
643 {
644
645 tBTA_PAN_CLOSE data;
646 BT_HDR *p_buf;
647
648 data.handle = p_data->hdr.layer_specific;
649
650 bta_sys_conn_close( BTA_ID_PAN ,p_scb->app_id, p_scb->bd_addr);
651
652 /* free all queued up data buffers */
653 while((p_buf = (BT_HDR *)GKI_dequeue(&p_scb->data_queue)) != NULL)
654 GKI_freebuf(p_buf);
655
656 GKI_init_q(&p_scb->data_queue);
657
658 bta_pan_scb_dealloc(p_scb);
659
660 bta_pan_cb.p_cback(BTA_PAN_CLOSE_EVT, (tBTA_PAN *)&data);
661
662 }
663
664
665
666
667 /*******************************************************************************
668 **
669 ** Function bta_pan_rx_path
670 **
671 ** Description Handle data on the RX path (data sent from the phone to
672 ** BTA).
673 **
674 **
675 ** Returns void
676 **
677 *******************************************************************************/
bta_pan_rx_path(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)678 void bta_pan_rx_path(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
679 {
680 UNUSED(p_data);
681
682 /* if data path configured for rx pull */
683 if ((bta_pan_cb.flow_mask & BTA_PAN_RX_MASK) == BTA_PAN_RX_PULL)
684 {
685 /* if we can accept data */
686 if (p_scb->pan_flow_enable == TRUE)
687 {
688 /* call application callout function for rx path */
689 bta_pan_co_rx_path(p_scb->handle, p_scb->app_id);
690 }
691 }
692 /* else data path configured for rx push */
693 else
694 {
695
696 }
697 }
698
699 /*******************************************************************************
700 **
701 ** Function bta_pan_tx_path
702 **
703 ** Description Handle the TX data path (data sent from BTA to the phone).
704 **
705 **
706 ** Returns void
707 **
708 *******************************************************************************/
bta_pan_tx_path(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)709 void bta_pan_tx_path(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
710 {
711 BT_HDR * p_buf;
712 UNUSED(p_data);
713
714 /* if data path configured for tx pull */
715 if ((bta_pan_cb.flow_mask & BTA_PAN_TX_MASK) == BTA_PAN_TX_PULL)
716 {
717 bta_pan_pm_conn_busy(p_scb);
718 /* call application callout function for tx path */
719 bta_pan_co_tx_path(p_scb->handle, p_scb->app_id);
720
721 /* free data that exceeds queue level */
722 while(GKI_queue_length(&p_scb->data_queue) > bta_pan_cb.q_level)
723 GKI_freebuf(GKI_dequeue(&p_scb->data_queue));
724 bta_pan_pm_conn_idle(p_scb);
725 }
726 /* if configured for zero copy push */
727 else if ((bta_pan_cb.flow_mask & BTA_PAN_TX_MASK) == BTA_PAN_TX_PUSH_BUF)
728 {
729 /* if app can accept data */
730 if (p_scb->app_flow_enable == TRUE)
731 {
732 /* read data from the queue */
733 if ((p_buf = (BT_HDR *)GKI_dequeue(&p_scb->data_queue)) != NULL)
734 {
735 /* send data to application */
736 bta_pan_co_tx_writebuf(p_scb->handle,
737 p_scb->app_id,
738 ((tBTA_PAN_DATA_PARAMS *)p_buf)->src,
739 ((tBTA_PAN_DATA_PARAMS *)p_buf)->dst,
740 ((tBTA_PAN_DATA_PARAMS *)p_buf)->protocol,
741 p_buf,
742 ((tBTA_PAN_DATA_PARAMS *)p_buf)->ext,
743 ((tBTA_PAN_DATA_PARAMS *)p_buf)->forward);
744
745 }
746 /* free data that exceeds queue level */
747 while(GKI_queue_length(&p_scb->data_queue) > bta_pan_cb.q_level)
748 GKI_freebuf(GKI_dequeue(&p_scb->data_queue));
749
750 /* if there is more data to be passed to
751 upper layer */
752 if(!GKI_queue_is_empty(&p_scb->data_queue))
753 {
754 if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL)
755 {
756 p_buf->layer_specific = p_scb->handle;
757 p_buf->event = BTA_PAN_RX_FROM_BNEP_READY_EVT;
758 bta_sys_sendmsg(p_buf);
759 }
760
761 }
762
763 }
764 }
765 }
766
767 /*******************************************************************************
768 **
769 ** Function bta_pan_tx_flow
770 **
771 ** Description Set the application flow control state.
772 **
773 **
774 ** Returns void
775 **
776 *******************************************************************************/
bta_pan_tx_flow(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)777 void bta_pan_tx_flow(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
778 {
779 p_scb->app_flow_enable = p_data->ci_tx_flow.enable;
780 }
781
782 /*******************************************************************************
783 **
784 ** Function bta_pan_write_buf
785 **
786 ** Description Handle a bta_pan_ci_rx_writebuf() and send data to PAN.
787 **
788 **
789 ** Returns void
790 **
791 *******************************************************************************/
bta_pan_write_buf(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)792 void bta_pan_write_buf(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
793 {
794 if ((bta_pan_cb.flow_mask & BTA_PAN_RX_MASK) == BTA_PAN_RX_PUSH_BUF)
795 {
796 bta_pan_pm_conn_busy(p_scb);
797
798 PAN_WriteBuf (p_scb->handle,
799 ((tBTA_PAN_DATA_PARAMS *)p_data)->dst,
800 ((tBTA_PAN_DATA_PARAMS *)p_data)->src,
801 ((tBTA_PAN_DATA_PARAMS *)p_data)->protocol,
802 (BT_HDR *)p_data,
803 ((tBTA_PAN_DATA_PARAMS *)p_data)->ext);
804 bta_pan_pm_conn_idle(p_scb);
805
806 }
807 }
808
809 /*******************************************************************************
810 **
811 ** Function bta_pan_free_buf
812 **
813 ** Description Frees the data buffer during closing state
814 **
815 **
816 ** Returns void
817 **
818 *******************************************************************************/
bta_pan_free_buf(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)819 void bta_pan_free_buf(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
820 {
821 UNUSED(p_scb);
822
823 GKI_freebuf(p_data);
824
825 }
826
827 #endif /* PAN_INCLUDED */
828