1 /******************************************************************************
2 *
3 * Copyright 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 (PAN_INCLUDED == TRUE)
28
29 #include <string.h>
30
31 #include <log/log.h>
32
33 #include "bt_common.h"
34 #include "bta_api.h"
35 #include "bta_pan_api.h"
36 #include "bta_pan_co.h"
37 #include "bta_pan_int.h"
38 #include "bta_sys.h"
39 #include "osi/include/osi.h"
40 #include "pan_api.h"
41 #include "utl.h"
42
43 /* RX and TX data flow mask */
44 #define BTA_PAN_RX_MASK 0x0F
45 #define BTA_PAN_TX_MASK 0xF0
46
47 /*******************************************************************************
48 *
49 * Function bta_pan_pm_conn_busy
50 *
51 * Description set pan pm connection busy state
52 *
53 * Params p_scb: state machine control block of pan connection
54 *
55 * Returns void
56 *
57 ******************************************************************************/
bta_pan_pm_conn_busy(tBTA_PAN_SCB * p_scb)58 static void bta_pan_pm_conn_busy(tBTA_PAN_SCB* p_scb) {
59 if ((p_scb != NULL) && (p_scb->state != BTA_PAN_IDLE_ST))
60 bta_sys_busy(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr);
61 }
62
63 /*******************************************************************************
64 *
65 * Function bta_pan_pm_conn_idle
66 *
67 * Description set pan pm connection idle state
68 *
69 * Params p_scb: state machine control block of pan connection
70 *
71 * Returns void
72 *
73 ******************************************************************************/
bta_pan_pm_conn_idle(tBTA_PAN_SCB * p_scb)74 static void bta_pan_pm_conn_idle(tBTA_PAN_SCB* p_scb) {
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_t handle,const RawAddress & bd_addr,tPAN_RESULT state,bool is_role_change,uint8_t src_role,uint8_t dst_role)89 static void bta_pan_conn_state_cback(uint16_t handle, const RawAddress& bd_addr,
90 tPAN_RESULT state, bool is_role_change,
91 uint8_t src_role, uint8_t dst_role) {
92 tBTA_PAN_SCB* p_scb;
93 tBTA_PAN_CONN* p_buf = (tBTA_PAN_CONN*)osi_malloc(sizeof(tBTA_PAN_CONN));
94
95 if ((state == PAN_SUCCESS) && !is_role_change) {
96 p_buf->hdr.event = BTA_PAN_CONN_OPEN_EVT;
97 p_scb = bta_pan_scb_by_handle(handle);
98 if (p_scb == NULL) {
99 /* allocate an scb */
100 p_scb = bta_pan_scb_alloc();
101 }
102 /* we have exceeded maximum number of connections */
103 if (!p_scb) {
104 PAN_Disconnect(handle);
105 return;
106 }
107
108 p_scb->handle = handle;
109 p_scb->local_role = src_role;
110 p_scb->peer_role = dst_role;
111 p_scb->pan_flow_enable = true;
112 p_scb->bd_addr = bd_addr;
113 p_scb->data_queue = fixed_queue_new(SIZE_MAX);
114
115 if (src_role == PAN_ROLE_CLIENT)
116 p_scb->app_id = bta_pan_cb.app_id[0];
117 else if (src_role == PAN_ROLE_GN_SERVER)
118 p_scb->app_id = bta_pan_cb.app_id[1];
119 else if (src_role == PAN_ROLE_NAP_SERVER)
120 p_scb->app_id = bta_pan_cb.app_id[2];
121 } else if ((state != PAN_SUCCESS) && !is_role_change) {
122 p_buf->hdr.event = BTA_PAN_CONN_CLOSE_EVT;
123 } else {
124 return;
125 }
126
127 p_buf->result = state;
128 p_buf->hdr.layer_specific = handle;
129
130 bta_sys_sendmsg(p_buf);
131 }
132
133 /*******************************************************************************
134 *
135 * Function bta_pan_data_flow_cb
136 *
137 * Description Data flow status callback from PAN
138 *
139 *
140 * Returns void
141 *
142 ******************************************************************************/
bta_pan_data_flow_cb(uint16_t handle,tPAN_RESULT result)143 static void bta_pan_data_flow_cb(uint16_t handle, tPAN_RESULT result) {
144 tBTA_PAN_SCB* p_scb;
145
146 p_scb = bta_pan_scb_by_handle(handle);
147 if (p_scb == NULL) return;
148
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);
158 }
159 }
160
161 /*******************************************************************************
162 *
163 * Function bta_pan_data_buf_ind_cback
164 *
165 * Description data indication callback from pan profile
166 *
167 *
168 * Returns void
169 *
170 ******************************************************************************/
bta_pan_data_buf_ind_cback(uint16_t handle,const RawAddress & src,const RawAddress & dst,uint16_t protocol,BT_HDR * p_buf,bool ext,bool forward)171 static void bta_pan_data_buf_ind_cback(uint16_t handle, const RawAddress& src,
172 const RawAddress& dst, uint16_t protocol,
173 BT_HDR* p_buf, bool ext, bool forward) {
174 tBTA_PAN_SCB* p_scb = bta_pan_scb_by_handle(handle);
175 if (p_scb == NULL) {
176 return;
177 }
178
179 if (sizeof(BT_HDR) + sizeof(tBTA_PAN_DATA_PARAMS) + p_buf->len >
180 PAN_BUF_SIZE) {
181 android_errorWriteLog(0x534e4554, "63146237");
182 APPL_TRACE_ERROR("%s: received buffer length too large: %d", __func__,
183 p_buf->len);
184 return;
185 }
186
187 BT_HDR* p_new_buf = (BT_HDR*)osi_malloc(PAN_BUF_SIZE);
188 memcpy((uint8_t*)(p_new_buf + 1) + sizeof(tBTA_PAN_DATA_PARAMS),
189 (uint8_t*)(p_buf + 1) + p_buf->offset, p_buf->len);
190 p_new_buf->len = p_buf->len;
191 p_new_buf->offset = sizeof(tBTA_PAN_DATA_PARAMS);
192
193 /* copy params into the space before the data */
194 ((tBTA_PAN_DATA_PARAMS*)p_new_buf)->src = src;
195 ((tBTA_PAN_DATA_PARAMS*)p_new_buf)->dst = dst;
196 ((tBTA_PAN_DATA_PARAMS*)p_new_buf)->protocol = protocol;
197 ((tBTA_PAN_DATA_PARAMS*)p_new_buf)->ext = ext;
198 ((tBTA_PAN_DATA_PARAMS*)p_new_buf)->forward = forward;
199
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);
205 }
206
207 /*******************************************************************************
208 *
209 * Function bta_pan_pfilt_ind_cback
210 *
211 * Description
212 *
213 *
214 * Returns void
215 *
216 ******************************************************************************/
bta_pan_pfilt_ind_cback(uint16_t handle,bool indication,tBNEP_RESULT result,uint16_t num_filters,uint8_t * p_filters)217 static void bta_pan_pfilt_ind_cback(uint16_t handle, bool indication,
218 tBNEP_RESULT result, uint16_t num_filters,
219 uint8_t* p_filters) {
220 bta_pan_co_pfilt_ind(
221 handle, indication,
222 (tBTA_PAN_STATUS)((result == BNEP_SUCCESS) ? BTA_PAN_SUCCESS
223 : BTA_PAN_FAIL),
224 num_filters, p_filters);
225 }
226
227 /*******************************************************************************
228 *
229 * Function bta_pan_mfilt_ind_cback
230 *
231 * Description
232 *
233 *
234 * Returns void
235 *
236 ******************************************************************************/
bta_pan_mfilt_ind_cback(uint16_t handle,bool indication,tBNEP_RESULT result,uint16_t num_mfilters,uint8_t * p_mfilters)237 static void bta_pan_mfilt_ind_cback(uint16_t handle, bool indication,
238 tBNEP_RESULT result, uint16_t num_mfilters,
239 uint8_t* p_mfilters) {
240 bta_pan_co_mfilt_ind(
241 handle, indication,
242 (tBTA_PAN_STATUS)((result == BNEP_SUCCESS) ? BTA_PAN_SUCCESS
243 : BTA_PAN_FAIL),
244 num_mfilters, p_mfilters);
245 }
246
247 /*******************************************************************************
248 *
249 * Function bta_pan_has_multiple_connections
250 *
251 * Description Check whether there are multiple GN/NAP connections to
252 * different devices
253 *
254 *
255 * Returns bool
256 *
257 ******************************************************************************/
bta_pan_has_multiple_connections(uint8_t app_id)258 static bool bta_pan_has_multiple_connections(uint8_t app_id) {
259 tBTA_PAN_SCB* p_scb = NULL;
260 bool found = false;
261 RawAddress bd_addr;
262
263 for (uint8_t index = 0; index < BTA_PAN_NUM_CONN; index++) {
264 p_scb = &bta_pan_cb.scb[index];
265 if (p_scb->in_use && app_id == p_scb->app_id) {
266 /* save temp bd_addr */
267 bd_addr = p_scb->bd_addr;
268 found = true;
269 break;
270 }
271 }
272
273 /* If cannot find a match then there is no connection at all */
274 if (!found) return false;
275
276 /* Find whether there is another connection with different device other than
277 PANU.
278 Could be same service or different service */
279 for (uint8_t index = 0; index < BTA_PAN_NUM_CONN; index++) {
280 p_scb = &bta_pan_cb.scb[index];
281 if (p_scb->in_use && p_scb->app_id != bta_pan_cb.app_id[0] &&
282 bd_addr != p_scb->bd_addr) {
283 return true;
284 }
285 }
286 return false;
287 }
288
289 /*******************************************************************************
290 *
291 * Function bta_pan_enable
292 *
293 * Description
294 *
295 *
296 *
297 * Returns void
298 *
299 ******************************************************************************/
bta_pan_enable(tBTA_PAN_DATA * p_data)300 void bta_pan_enable(tBTA_PAN_DATA* p_data) {
301 tPAN_REGISTER reg_data;
302 uint16_t initial_discoverability;
303 uint16_t initial_connectability;
304 uint16_t d_window;
305 uint16_t d_interval;
306 uint16_t c_window;
307 uint16_t c_interval;
308
309 bta_pan_cb.p_cback = p_data->api_enable.p_cback;
310
311 reg_data.pan_conn_state_cb = bta_pan_conn_state_cback;
312 reg_data.pan_bridge_req_cb = NULL;
313 reg_data.pan_data_buf_ind_cb = bta_pan_data_buf_ind_cback;
314 reg_data.pan_data_ind_cb = NULL;
315 reg_data.pan_pfilt_ind_cb = bta_pan_pfilt_ind_cback;
316 reg_data.pan_mfilt_ind_cb = bta_pan_mfilt_ind_cback;
317 reg_data.pan_tx_data_flow_cb = bta_pan_data_flow_cb;
318
319 /* read connectability and discoverability settings.
320 Pan profile changes the settings. We have to change it back to
321 be consistent with other bta subsystems */
322 initial_connectability = BTM_ReadConnectability(&c_window, &c_interval);
323 initial_discoverability = BTM_ReadDiscoverability(&d_window, &d_interval);
324
325 PAN_Register(®_data);
326
327 /* set it back to original value */
328 BTM_SetDiscoverability(initial_discoverability, d_window, d_interval);
329 BTM_SetConnectability(initial_connectability, c_window, c_interval);
330
331 bta_pan_cb.flow_mask = bta_pan_co_init(&bta_pan_cb.q_level);
332 bta_pan_cb.p_cback(BTA_PAN_ENABLE_EVT, NULL);
333 }
334
335 /*******************************************************************************
336 *
337 * Function bta_pan_set_role
338 *
339 * Description
340 *
341 * Returns void
342 *
343 ******************************************************************************/
bta_pan_set_role(tBTA_PAN_DATA * p_data)344 void bta_pan_set_role(tBTA_PAN_DATA* p_data) {
345 tPAN_RESULT status;
346 tBTA_PAN bta_pan;
347 uint8_t sec[3];
348
349 bta_pan_cb.app_id[0] = p_data->api_set_role.user_app_id;
350 bta_pan_cb.app_id[1] = p_data->api_set_role.gn_app_id;
351 bta_pan_cb.app_id[2] = p_data->api_set_role.nap_app_id;
352
353 sec[0] = p_data->api_set_role.user_sec_mask;
354 sec[1] = p_data->api_set_role.gn_sec_mask;
355 sec[2] = p_data->api_set_role.nap_sec_mask;
356
357 /* set security correctly in api and here */
358 status = PAN_SetRole(
359 p_data->api_set_role.role, sec, p_data->api_set_role.user_name,
360 p_data->api_set_role.gn_name, p_data->api_set_role.nap_name);
361
362 bta_pan.set_role.role = p_data->api_set_role.role;
363 if (status == PAN_SUCCESS) {
364 if (p_data->api_set_role.role & PAN_ROLE_NAP_SERVER)
365 bta_sys_add_uuid(UUID_SERVCLASS_NAP);
366 else
367 bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
368
369 if (p_data->api_set_role.role & PAN_ROLE_GN_SERVER)
370 bta_sys_add_uuid(UUID_SERVCLASS_GN);
371 else
372 bta_sys_remove_uuid(UUID_SERVCLASS_GN);
373
374 if (p_data->api_set_role.role & PAN_ROLE_CLIENT)
375 bta_sys_add_uuid(UUID_SERVCLASS_PANU);
376 else
377 bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
378
379 bta_pan.set_role.status = BTA_PAN_SUCCESS;
380 }
381 /* if status is not success clear everything */
382 else {
383 PAN_SetRole(0, 0, NULL, NULL, NULL);
384 bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
385 bta_sys_remove_uuid(UUID_SERVCLASS_GN);
386 bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
387 bta_pan.set_role.status = BTA_PAN_FAIL;
388 }
389 bta_pan_cb.p_cback(BTA_PAN_SET_ROLE_EVT, &bta_pan);
390 }
391
392 /*******************************************************************************
393 *
394 * Function bta_pan_disable
395 *
396 * Description
397 *
398 *
399 *
400 * Returns void
401 *
402 ******************************************************************************/
bta_pan_disable(void)403 void bta_pan_disable(void) {
404 BT_HDR* p_buf;
405 tBTA_PAN_SCB* p_scb = &bta_pan_cb.scb[0];
406 uint8_t i;
407
408 /* close all connections */
409 PAN_SetRole(0, NULL, NULL, NULL, NULL);
410
411 #if (BTA_EIR_CANNED_UUID_LIST != TRUE)
412 bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
413 bta_sys_remove_uuid(UUID_SERVCLASS_GN);
414 bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
415 #endif // BTA_EIR_CANNED_UUID_LIST
416 /* free all queued up data buffers */
417 for (i = 0; i < BTA_PAN_NUM_CONN; i++, p_scb++) {
418 if (p_scb->in_use) {
419 while ((p_buf = (BT_HDR*)fixed_queue_try_dequeue(p_scb->data_queue)) !=
420 NULL)
421 osi_free(p_buf);
422
423 bta_pan_co_close(p_scb->handle, p_scb->app_id);
424 }
425 }
426
427 PAN_Deregister();
428 }
429
430 /*******************************************************************************
431 *
432 * Function bta_pan_open
433 *
434 * Description
435 *
436 * Returns void
437 *
438 ******************************************************************************/
bta_pan_open(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)439 void bta_pan_open(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) {
440 tPAN_RESULT status;
441 tBTA_PAN bta_pan;
442
443 status = PAN_Connect(p_data->api_open.bd_addr, p_data->api_open.local_role,
444 p_data->api_open.peer_role, &p_scb->handle);
445 APPL_TRACE_DEBUG("%s pan connect status: %d", __func__, status);
446
447 if (status == PAN_SUCCESS) {
448 p_scb->bd_addr = p_data->api_open.bd_addr;
449 p_scb->local_role = p_data->api_open.local_role;
450 p_scb->peer_role = p_data->api_open.peer_role;
451 bta_pan.opening.bd_addr = p_data->api_open.bd_addr;
452 bta_pan.opening.handle = p_scb->handle;
453 bta_pan_cb.p_cback(BTA_PAN_OPENING_EVT, &bta_pan);
454
455 } else {
456 bta_pan_scb_dealloc(p_scb);
457 bta_pan.open.bd_addr = p_data->api_open.bd_addr;
458 bta_pan.open.status = BTA_PAN_FAIL;
459 bta_pan.open.local_role = p_data->api_open.local_role;
460 bta_pan.open.peer_role = p_data->api_open.peer_role;
461 bta_pan_cb.p_cback(BTA_PAN_OPEN_EVT, &bta_pan);
462 }
463 }
464
465 /*******************************************************************************
466 *
467 * Function bta_pan_close
468 *
469 * Description
470 *
471 *
472 *
473 * Returns void
474 *
475 ******************************************************************************/
bta_pan_api_close(tBTA_PAN_SCB * p_scb,UNUSED_ATTR tBTA_PAN_DATA * p_data)476 void bta_pan_api_close(tBTA_PAN_SCB* p_scb, UNUSED_ATTR tBTA_PAN_DATA* p_data) {
477 tBTA_PAN_CONN* p_buf = (tBTA_PAN_CONN*)osi_malloc(sizeof(tBTA_PAN_CONN));
478
479 PAN_Disconnect(p_scb->handle);
480
481 /*
482 * Send an event to BTA so that application will get the connection
483 * close event.
484 */
485 p_buf->hdr.event = BTA_PAN_CONN_CLOSE_EVT;
486 p_buf->hdr.layer_specific = p_scb->handle;
487
488 bta_sys_sendmsg(p_buf);
489 }
490
491 /*******************************************************************************
492 *
493 * Function bta_pan_conn_open
494 *
495 * Description process connection open event
496 *
497 * Returns void
498 *
499 ******************************************************************************/
bta_pan_conn_open(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)500 void bta_pan_conn_open(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) {
501 tBTA_PAN bta_pan;
502
503 APPL_TRACE_DEBUG("%s pan connection result: %d", __func__,
504 p_data->conn.result);
505
506 bta_pan.open.bd_addr = p_scb->bd_addr;
507 bta_pan.open.handle = p_scb->handle;
508 bta_pan.open.local_role = p_scb->local_role;
509 bta_pan.open.peer_role = p_scb->peer_role;
510
511 if (p_data->conn.result == PAN_SUCCESS) {
512 bta_pan.open.status = BTA_PAN_SUCCESS;
513 p_scb->pan_flow_enable = true;
514 p_scb->app_flow_enable = true;
515 bta_sys_conn_open(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr);
516 } else {
517 bta_pan_scb_dealloc(p_scb);
518 bta_pan.open.status = BTA_PAN_FAIL;
519 }
520
521 p_scb->pan_flow_enable = true;
522 p_scb->app_flow_enable = true;
523
524 /* If app_id is NAP/GN, check whether there are multiple connections.
525 If there are, provide a special app_id to dm to enforce master role only.
526 */
527 if ((p_scb->app_id == bta_pan_cb.app_id[1] ||
528 p_scb->app_id == bta_pan_cb.app_id[2]) &&
529 bta_pan_has_multiple_connections(p_scb->app_id)) {
530 p_scb->app_id = BTA_APP_ID_PAN_MULTI;
531 }
532
533 bta_sys_conn_open(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr);
534 bta_pan_cb.p_cback(BTA_PAN_OPEN_EVT, &bta_pan);
535 }
536
537 /*******************************************************************************
538 *
539 * Function bta_pan_conn_close
540 *
541 * Description process connection close event
542 *
543 *
544 *
545 * Returns void
546 *
547 ******************************************************************************/
bta_pan_conn_close(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)548 void bta_pan_conn_close(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) {
549 tBTA_PAN bta_pan;
550 BT_HDR* p_buf;
551
552 bta_pan.close.handle = p_data->hdr.layer_specific;
553
554 bta_sys_conn_close(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr);
555
556 /* free all queued up data buffers */
557 while ((p_buf = (BT_HDR*)fixed_queue_try_dequeue(p_scb->data_queue)) != NULL)
558 osi_free(p_buf);
559
560 bta_pan_scb_dealloc(p_scb);
561
562 bta_pan_cb.p_cback(BTA_PAN_CLOSE_EVT, &bta_pan);
563 }
564
565 /*******************************************************************************
566 *
567 * Function bta_pan_rx_path
568 *
569 * Description Handle data on the RX path (data sent from the phone to
570 * BTA).
571 *
572 *
573 * Returns void
574 *
575 ******************************************************************************/
bta_pan_rx_path(tBTA_PAN_SCB * p_scb,UNUSED_ATTR tBTA_PAN_DATA * p_data)576 void bta_pan_rx_path(tBTA_PAN_SCB* p_scb, UNUSED_ATTR tBTA_PAN_DATA* p_data) {
577 /* if data path configured for rx pull */
578 if ((bta_pan_cb.flow_mask & BTA_PAN_RX_MASK) == BTA_PAN_RX_PULL) {
579 /* if we can accept data */
580 if (p_scb->pan_flow_enable) {
581 /* call application callout function for rx path */
582 bta_pan_co_rx_path(p_scb->handle, p_scb->app_id);
583 }
584 }
585 /* else data path configured for rx push */
586 else {
587 }
588 }
589
590 /*******************************************************************************
591 *
592 * Function bta_pan_tx_path
593 *
594 * Description Handle the TX data path (data sent from BTA to the phone).
595 *
596 *
597 * Returns void
598 *
599 ******************************************************************************/
bta_pan_tx_path(tBTA_PAN_SCB * p_scb,UNUSED_ATTR tBTA_PAN_DATA * p_data)600 void bta_pan_tx_path(tBTA_PAN_SCB* p_scb, UNUSED_ATTR tBTA_PAN_DATA* p_data) {
601 /* if data path configured for tx pull */
602 if ((bta_pan_cb.flow_mask & BTA_PAN_TX_MASK) == BTA_PAN_TX_PULL) {
603 bta_pan_pm_conn_busy(p_scb);
604 /* call application callout function for tx path */
605 bta_pan_co_tx_path(p_scb->handle, p_scb->app_id);
606
607 /* free data that exceeds queue level */
608 while (fixed_queue_length(p_scb->data_queue) > bta_pan_cb.q_level)
609 osi_free(fixed_queue_try_dequeue(p_scb->data_queue));
610 bta_pan_pm_conn_idle(p_scb);
611 }
612 /* if configured for zero copy push */
613 else if ((bta_pan_cb.flow_mask & BTA_PAN_TX_MASK) == BTA_PAN_TX_PUSH_BUF) {
614 /* if app can accept data */
615 if (p_scb->app_flow_enable) {
616 BT_HDR* p_buf;
617
618 /* read data from the queue */
619 p_buf = (BT_HDR*)fixed_queue_try_dequeue(p_scb->data_queue);
620 if (p_buf != NULL) {
621 /* send data to application */
622 bta_pan_co_tx_writebuf(p_scb->handle, p_scb->app_id,
623 ((tBTA_PAN_DATA_PARAMS*)p_buf)->src,
624 ((tBTA_PAN_DATA_PARAMS*)p_buf)->dst,
625 ((tBTA_PAN_DATA_PARAMS*)p_buf)->protocol, p_buf,
626 ((tBTA_PAN_DATA_PARAMS*)p_buf)->ext,
627 ((tBTA_PAN_DATA_PARAMS*)p_buf)->forward);
628 }
629 /* free data that exceeds queue level */
630 while (fixed_queue_length(p_scb->data_queue) > bta_pan_cb.q_level)
631 osi_free(fixed_queue_try_dequeue(p_scb->data_queue));
632
633 /* if there is more data to be passed to
634 upper layer */
635 if (!fixed_queue_is_empty(p_scb->data_queue)) {
636 p_buf = (BT_HDR*)osi_malloc(sizeof(BT_HDR));
637 p_buf->layer_specific = p_scb->handle;
638 p_buf->event = BTA_PAN_RX_FROM_BNEP_READY_EVT;
639 bta_sys_sendmsg(p_buf);
640 }
641 }
642 }
643 }
644
645 /*******************************************************************************
646 *
647 * Function bta_pan_tx_flow
648 *
649 * Description Set the application flow control state.
650 *
651 *
652 * Returns void
653 *
654 ******************************************************************************/
bta_pan_tx_flow(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)655 void bta_pan_tx_flow(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) {
656 p_scb->app_flow_enable = p_data->ci_tx_flow.enable;
657 }
658
659 /*******************************************************************************
660 *
661 * Function bta_pan_write_buf
662 *
663 * Description Handle a bta_pan_ci_rx_writebuf() and send data to PAN.
664 *
665 *
666 * Returns void
667 *
668 ******************************************************************************/
bta_pan_write_buf(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)669 void bta_pan_write_buf(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) {
670 if ((bta_pan_cb.flow_mask & BTA_PAN_RX_MASK) == BTA_PAN_RX_PUSH_BUF) {
671 bta_pan_pm_conn_busy(p_scb);
672
673 PAN_WriteBuf(p_scb->handle, ((tBTA_PAN_DATA_PARAMS*)p_data)->dst,
674 ((tBTA_PAN_DATA_PARAMS*)p_data)->src,
675 ((tBTA_PAN_DATA_PARAMS*)p_data)->protocol, (BT_HDR*)p_data,
676 ((tBTA_PAN_DATA_PARAMS*)p_data)->ext);
677 bta_pan_pm_conn_idle(p_scb);
678 }
679 }
680
681 /*******************************************************************************
682 *
683 * Function bta_pan_free_buf
684 *
685 * Description Frees the data buffer during closing state
686 *
687 *
688 * Returns void
689 *
690 ******************************************************************************/
bta_pan_free_buf(UNUSED_ATTR tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)691 void bta_pan_free_buf(UNUSED_ATTR tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) {
692 osi_free(p_data);
693 }
694
695 #endif /* PAN_INCLUDED */
696