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 #define LOG_TAG "bluetooth"
26 
27 #include <bluetooth/log.h>
28 
29 #include <cstdint>
30 
31 #include "bta/include/bta_pan_co.h"
32 #include "bta/pan/bta_pan_int.h"
33 #include "internal_include/bt_target.h"  // PAN_INCLUDED
34 #include "osi/include/allocator.h"
35 #include "osi/include/fixed_queue.h"
36 #include "stack/include/bt_hdr.h"
37 #include "stack/include/bt_uuid16.h"
38 #include "stack/include/pan_api.h"
39 #include "types/raw_address.h"
40 
41 using namespace bluetooth;
42 
43 #if (PAN_INCLUDED == TRUE)
44 void bta_pan_sm_execute(tBTA_PAN_SCB* p_scb, uint16_t event,
45                         tBTA_PAN_DATA* p_data);
46 
47 /* RX and TX data flow mask */
48 #define BTA_PAN_RX_MASK 0x0F
49 #define BTA_PAN_TX_MASK 0xF0
50 
51 /*******************************************************************************
52  *
53  * Function    bta_pan_pm_conn_busy
54  *
55  * Description set pan pm connection busy state
56  *
57  * Params      p_scb: state machine control block of pan connection
58  *
59  * Returns     void
60  *
61  ******************************************************************************/
bta_pan_pm_conn_busy(tBTA_PAN_SCB * p_scb)62 static void bta_pan_pm_conn_busy(tBTA_PAN_SCB* p_scb) {
63   if ((p_scb != NULL) && (p_scb->state != BTA_PAN_IDLE_ST))
64     bta_sys_busy(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr);
65 }
66 
67 /*******************************************************************************
68  *
69  * Function    bta_pan_pm_conn_idle
70  *
71  * Description set pan pm connection idle state
72  *
73  * Params      p_scb: state machine control block of pan connection
74  *
75  * Returns     void
76  *
77  ******************************************************************************/
bta_pan_pm_conn_idle(tBTA_PAN_SCB * p_scb)78 static void bta_pan_pm_conn_idle(tBTA_PAN_SCB* p_scb) {
79   if ((p_scb != NULL) && (p_scb->state != BTA_PAN_IDLE_ST))
80     bta_sys_idle(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr);
81 }
82 
83 /*******************************************************************************
84  *
85  * Function         bta_pan_conn_state_cback
86  *
87  * Description      Connection state callback from Pan profile
88  *
89  *
90  * Returns          void
91  *
92  ******************************************************************************/
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)93 static void bta_pan_conn_state_cback(uint16_t handle, const RawAddress& bd_addr,
94                                      tPAN_RESULT state, bool is_role_change,
95                                      uint8_t src_role, uint8_t dst_role) {
96   tBTA_PAN_SCB* p_scb;
97   tBTA_PAN_CONN* p_buf = (tBTA_PAN_CONN*)osi_malloc(sizeof(tBTA_PAN_CONN));
98 
99   if ((state == PAN_SUCCESS) && !is_role_change) {
100     p_buf->hdr.event = BTA_PAN_CONN_OPEN_EVT;
101     p_scb = bta_pan_scb_by_handle(handle);
102     if (p_scb == NULL) {
103       /* allocate an scb */
104       p_scb = bta_pan_scb_alloc();
105     }
106     /* we have exceeded maximum number of connections */
107     if (!p_scb) {
108       PAN_Disconnect(handle);
109       return;
110     }
111 
112     p_scb->handle = handle;
113     p_scb->local_role = src_role;
114     p_scb->peer_role = dst_role;
115     p_scb->pan_flow_enable = true;
116     p_scb->bd_addr = bd_addr;
117     p_scb->data_queue = fixed_queue_new(SIZE_MAX);
118 
119     if (src_role == PAN_ROLE_CLIENT)
120       p_scb->app_id = bta_pan_cb.app_id[0];
121     else if (src_role == PAN_ROLE_NAP_SERVER)
122       p_scb->app_id = bta_pan_cb.app_id[2];
123   } else if ((state != PAN_SUCCESS) && !is_role_change) {
124     p_buf->hdr.event = BTA_PAN_CONN_CLOSE_EVT;
125   } else {
126     return;
127   }
128 
129   p_buf->result = state;
130   p_buf->hdr.layer_specific = handle;
131 
132   bta_sys_sendmsg(p_buf);
133 }
134 
135 /*******************************************************************************
136  *
137  * Function         bta_pan_data_flow_cb
138  *
139  * Description      Data flow status callback from PAN
140  *
141  *
142  * Returns          void
143  *
144  ******************************************************************************/
bta_pan_data_flow_cb(uint16_t handle,tPAN_RESULT result)145 static void bta_pan_data_flow_cb(uint16_t handle, tPAN_RESULT result) {
146   tBTA_PAN_SCB* p_scb;
147 
148   p_scb = bta_pan_scb_by_handle(handle);
149   if (p_scb == NULL) return;
150 
151   if (result == PAN_TX_FLOW_ON) {
152     BT_HDR_RIGID* p_buf = (BT_HDR_RIGID*)osi_malloc(sizeof(BT_HDR_RIGID));
153     p_buf->layer_specific = handle;
154     p_buf->event = BTA_PAN_BNEP_FLOW_ENABLE_EVT;
155     bta_sys_sendmsg(p_buf);
156     bta_pan_co_rx_flow(handle, p_scb->app_id, true);
157   } else if (result == PAN_TX_FLOW_OFF) {
158     p_scb->pan_flow_enable = false;
159     bta_pan_co_rx_flow(handle, p_scb->app_id, false);
160   }
161 }
162 
163 /*******************************************************************************
164  *
165  * Function         bta_pan_data_buf_ind_cback
166  *
167  * Description      data indication callback from pan profile
168  *
169  *
170  * Returns          void
171  *
172  ******************************************************************************/
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)173 static void bta_pan_data_buf_ind_cback(uint16_t handle, const RawAddress& src,
174                                        const RawAddress& dst, uint16_t protocol,
175                                        BT_HDR* p_buf, bool ext, bool forward) {
176   tBTA_PAN_SCB* p_scb = bta_pan_scb_by_handle(handle);
177   if (p_scb == NULL) {
178     return;
179   }
180 
181   if (sizeof(BT_HDR) + sizeof(tBTA_PAN_DATA_PARAMS) + p_buf->len >
182       PAN_BUF_SIZE) {
183     log::error("received buffer length too large: {}", 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_RIGID* p_event = (BT_HDR_RIGID*)osi_malloc(sizeof(BT_HDR_RIGID));
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,tPAN_RESULT result,uint16_t num_filters,uint8_t * p_filters)217 static void bta_pan_pfilt_ind_cback(uint16_t handle, bool indication,
218                                     tPAN_RESULT result, uint16_t num_filters,
219                                     uint8_t* p_filters) {
220   bta_pan_co_pfilt_ind(handle, indication,
221                        (result == PAN_SUCCESS) ? BTA_PAN_SUCCESS : BTA_PAN_FAIL,
222                        num_filters, p_filters);
223 }
224 
225 /*******************************************************************************
226  *
227  * Function         bta_pan_mfilt_ind_cback
228  *
229  * Description
230  *
231  *
232  * Returns          void
233  *
234  ******************************************************************************/
bta_pan_mfilt_ind_cback(uint16_t handle,bool indication,tPAN_RESULT result,uint16_t num_mfilters,uint8_t * p_mfilters)235 static void bta_pan_mfilt_ind_cback(uint16_t handle, bool indication,
236                                     tPAN_RESULT result, uint16_t num_mfilters,
237                                     uint8_t* p_mfilters) {
238   bta_pan_co_mfilt_ind(handle, indication,
239                        (result == PAN_SUCCESS) ? BTA_PAN_SUCCESS : BTA_PAN_FAIL,
240                        num_mfilters, p_mfilters);
241 }
242 
243 /*******************************************************************************
244  *
245  * Function         bta_pan_has_multiple_connections
246  *
247  * Description      Check whether there are multiple GN/NAP connections to
248  *                  different devices
249  *
250  *
251  * Returns          bool
252  *
253  ******************************************************************************/
bta_pan_has_multiple_connections(uint8_t app_id)254 static bool bta_pan_has_multiple_connections(uint8_t app_id) {
255   tBTA_PAN_SCB* p_scb = NULL;
256   bool found = false;
257   RawAddress bd_addr;
258 
259   for (uint8_t index = 0; index < BTA_PAN_NUM_CONN; index++) {
260     p_scb = &bta_pan_cb.scb[index];
261     if (p_scb->in_use && app_id == p_scb->app_id) {
262       /* save temp bd_addr */
263       bd_addr = p_scb->bd_addr;
264       found = true;
265       break;
266     }
267   }
268 
269   /* If cannot find a match then there is no connection at all */
270   if (!found) return false;
271 
272   /* Find whether there is another connection with different device other than
273      PANU.
274       Could be same service or different service */
275   for (uint8_t index = 0; index < BTA_PAN_NUM_CONN; index++) {
276     p_scb = &bta_pan_cb.scb[index];
277     if (p_scb->in_use && p_scb->app_id != bta_pan_cb.app_id[0] &&
278         bd_addr != p_scb->bd_addr) {
279       return true;
280     }
281   }
282   return false;
283 }
284 
285 /*******************************************************************************
286  *
287  * Function         bta_pan_enable
288  *
289  * Description
290  *
291  *
292  *
293  * Returns          void
294  *
295  ******************************************************************************/
bta_pan_enable(tBTA_PAN_DATA * p_data)296 void bta_pan_enable(tBTA_PAN_DATA* p_data) {
297   tPAN_REGISTER reg_data;
298 
299   bta_pan_cb.p_cback = p_data->api_enable.p_cback;
300 
301   reg_data.pan_conn_state_cb = bta_pan_conn_state_cback;
302   reg_data.pan_bridge_req_cb = NULL;
303   reg_data.pan_data_buf_ind_cb = bta_pan_data_buf_ind_cback;
304   reg_data.pan_data_ind_cb = NULL;
305   reg_data.pan_pfilt_ind_cb = bta_pan_pfilt_ind_cback;
306   reg_data.pan_mfilt_ind_cb = bta_pan_mfilt_ind_cback;
307   reg_data.pan_tx_data_flow_cb = bta_pan_data_flow_cb;
308 
309   PAN_Register(&reg_data);
310 
311   bta_pan_cb.flow_mask = bta_pan_co_init(&bta_pan_cb.q_level);
312   bta_pan_cb.p_cback(BTA_PAN_ENABLE_EVT, NULL);
313 }
314 
315 /*******************************************************************************
316  *
317  * Function         bta_pan_set_role
318  *
319  * Description
320  *
321  * Returns          void
322  *
323  ******************************************************************************/
bta_pan_set_role(tBTA_PAN_DATA * p_data)324 void bta_pan_set_role(tBTA_PAN_DATA* p_data) {
325   bta_pan_cb.app_id[0] = p_data->api_set_role.user_app_id;
326   bta_pan_cb.app_id[2] = p_data->api_set_role.nap_app_id;
327 
328   /* set security correctly in api and here */
329   tPAN_RESULT status = PAN_SetRole(p_data->api_set_role.role,
330                                    std::string(p_data->api_set_role.user_name),
331                                    std::string(p_data->api_set_role.nap_name));
332 
333   tBTA_PAN bta_pan = {
334       .set_role =
335           {
336               .status =
337                   (status == PAN_SUCCESS) ? BTA_PAN_SUCCESS : BTA_PAN_FAIL,
338               .role = p_data->api_set_role.role,
339           },
340   };
341 
342   if (status == PAN_SUCCESS) {
343     if (p_data->api_set_role.role & PAN_ROLE_NAP_SERVER)
344       bta_sys_add_uuid(UUID_SERVCLASS_NAP);
345     else
346       bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
347 
348     if (p_data->api_set_role.role & PAN_ROLE_CLIENT)
349       bta_sys_add_uuid(UUID_SERVCLASS_PANU);
350     else
351       bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
352   }
353   /* if status is not success clear everything */
354   else {
355     PAN_SetRole(0, std::string(), std::string());
356     bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
357     bta_sys_remove_uuid(UUID_SERVCLASS_GN);
358     bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
359   }
360   bta_pan_cb.p_cback(BTA_PAN_SET_ROLE_EVT, &bta_pan);
361 }
362 
363 /*******************************************************************************
364  *
365  * Function         bta_pan_disable
366  *
367  * Description
368  *
369  *
370  *
371  * Returns          void
372  *
373  ******************************************************************************/
bta_pan_disable(void)374 void bta_pan_disable(void) {
375   BT_HDR* p_buf;
376   tBTA_PAN_SCB* p_scb = &bta_pan_cb.scb[0];
377   uint8_t i;
378 
379   /* close all connections */
380   PAN_SetRole(0, std::string(), std::string());
381 
382   bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
383   bta_sys_remove_uuid(UUID_SERVCLASS_GN);
384   bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
385   /* free all queued up data buffers */
386   for (i = 0; i < BTA_PAN_NUM_CONN; i++, p_scb++) {
387     if (p_scb->in_use) {
388       while ((p_buf = (BT_HDR*)fixed_queue_try_dequeue(p_scb->data_queue)) !=
389              NULL)
390         osi_free(p_buf);
391 
392       bta_pan_co_close(p_scb->handle, p_scb->app_id);
393     }
394   }
395 
396   PAN_Deregister();
397 }
398 
399 /*******************************************************************************
400  *
401  * Function         bta_pan_open
402  *
403  * Description
404  *
405  * Returns          void
406  *
407  ******************************************************************************/
bta_pan_open(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)408 void bta_pan_open(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) {
409   tPAN_RESULT status;
410   tBTA_PAN bta_pan;
411 
412   status = PAN_Connect(p_data->api_open.bd_addr, p_data->api_open.local_role,
413                        p_data->api_open.peer_role, &p_scb->handle);
414   log::verbose("pan connect status: {}", status);
415 
416   if (status == PAN_SUCCESS) {
417     p_scb->bd_addr = p_data->api_open.bd_addr;
418     p_scb->local_role = p_data->api_open.local_role;
419     p_scb->peer_role = p_data->api_open.peer_role;
420     bta_pan.opening.bd_addr = p_data->api_open.bd_addr;
421     bta_pan.opening.handle = p_scb->handle;
422     bta_pan_cb.p_cback(BTA_PAN_OPENING_EVT, &bta_pan);
423 
424   } else {
425     bta_pan_scb_dealloc(p_scb);
426     bta_pan.open.bd_addr = p_data->api_open.bd_addr;
427     bta_pan.open.status = BTA_PAN_FAIL;
428     bta_pan.open.local_role = p_data->api_open.local_role;
429     bta_pan.open.peer_role = p_data->api_open.peer_role;
430     bta_pan_cb.p_cback(BTA_PAN_OPEN_EVT, &bta_pan);
431   }
432 }
433 
434 /*******************************************************************************
435  *
436  * Function         bta_pan_close
437  *
438  * Description
439  *
440  *
441  *
442  * Returns          void
443  *
444  ******************************************************************************/
bta_pan_api_close(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA *)445 void bta_pan_api_close(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* /* p_data */) {
446   tBTA_PAN_CONN* p_buf = (tBTA_PAN_CONN*)osi_malloc(sizeof(tBTA_PAN_CONN));
447 
448   PAN_Disconnect(p_scb->handle);
449 
450   /*
451    * Send an event to BTA so that application will get the connection
452    * close event.
453    */
454   p_buf->hdr.event = BTA_PAN_CONN_CLOSE_EVT;
455   p_buf->hdr.layer_specific = p_scb->handle;
456 
457   bta_sys_sendmsg(p_buf);
458 }
459 
460 /*******************************************************************************
461  *
462  * Function         bta_pan_conn_open
463  *
464  * Description      process connection open event
465  *
466  * Returns          void
467  *
468  ******************************************************************************/
bta_pan_conn_open(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)469 void bta_pan_conn_open(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) {
470   tBTA_PAN bta_pan;
471 
472   log::verbose("pan connection result: {}", p_data->conn.result);
473 
474   bta_pan.open.bd_addr = p_scb->bd_addr;
475   bta_pan.open.handle = p_scb->handle;
476   bta_pan.open.local_role = p_scb->local_role;
477   bta_pan.open.peer_role = p_scb->peer_role;
478 
479   if (p_data->conn.result == PAN_SUCCESS) {
480     bta_pan.open.status = BTA_PAN_SUCCESS;
481     p_scb->pan_flow_enable = true;
482     p_scb->app_flow_enable = true;
483     bta_sys_conn_open(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr);
484   } else {
485     bta_pan_scb_dealloc(p_scb);
486     bta_pan.open.status = BTA_PAN_FAIL;
487   }
488 
489   p_scb->pan_flow_enable = true;
490   p_scb->app_flow_enable = true;
491 
492   /* If app_id is NAP/GN, check whether there are multiple connections.
493      If there are, provide a special app_id to dm to enforce central role only.
494      */
495   if (p_scb->app_id == bta_pan_cb.app_id[2] &&
496       bta_pan_has_multiple_connections(p_scb->app_id)) {
497     p_scb->app_id = BTA_APP_ID_PAN_MULTI;
498   }
499 
500   bta_sys_conn_open(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr);
501   bta_pan_cb.p_cback(BTA_PAN_OPEN_EVT, &bta_pan);
502 }
503 
504 /*******************************************************************************
505  *
506  * Function         bta_pan_conn_close
507  *
508  * Description      process connection close event
509  *
510  *
511  *
512  * Returns          void
513  *
514  ******************************************************************************/
bta_pan_conn_close(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)515 void bta_pan_conn_close(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) {
516   tBTA_PAN bta_pan;
517   BT_HDR* p_buf;
518 
519   bta_pan.close.handle = p_data->hdr.layer_specific;
520 
521   bta_sys_conn_close(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr);
522 
523   /* free all queued up data buffers */
524   while ((p_buf = (BT_HDR*)fixed_queue_try_dequeue(p_scb->data_queue)) != NULL)
525     osi_free(p_buf);
526 
527   bta_pan_scb_dealloc(p_scb);
528 
529   bta_pan_cb.p_cback(BTA_PAN_CLOSE_EVT, &bta_pan);
530 }
531 
532 /*******************************************************************************
533  *
534  * Function         bta_pan_rx_path
535  *
536  * Description      Handle data on the RX path (data sent from the phone to
537  *                  BTA).
538  *
539  *
540  * Returns          void
541  *
542  ******************************************************************************/
bta_pan_rx_path(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA *)543 void bta_pan_rx_path(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* /* p_data */) {
544   /* if data path configured for rx pull */
545   if ((bta_pan_cb.flow_mask & BTA_PAN_RX_MASK) == BTA_PAN_RX_PULL) {
546     /* if we can accept data */
547     if (p_scb->pan_flow_enable) {
548       /* call application callout function for rx path */
549       bta_pan_co_rx_path(p_scb->handle, p_scb->app_id);
550     }
551   }
552   /* else data path configured for rx push */
553   else {
554   }
555 }
556 
557 /*******************************************************************************
558  *
559  * Function         bta_pan_tx_path
560  *
561  * Description      Handle the TX data path (data sent from BTA to the phone).
562  *
563  *
564  * Returns          void
565  *
566  ******************************************************************************/
bta_pan_tx_path(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA *)567 void bta_pan_tx_path(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* /* p_data */) {
568   bta_pan_pm_conn_busy(p_scb);
569   /* call application callout function for tx path */
570   bta_pan_co_tx_path(p_scb->handle, p_scb->app_id);
571 
572   /* free data that exceeds queue level */
573   while (fixed_queue_length(p_scb->data_queue) > bta_pan_cb.q_level) {
574     BT_HDR* p_buf = (BT_HDR*)fixed_queue_try_dequeue(p_scb->data_queue);
575     if (p_buf != nullptr) {
576       osi_free(p_buf);
577     }
578   }
579 
580   bta_pan_pm_conn_idle(p_scb);
581 }
582 
583 /*******************************************************************************
584  *
585  * Function         bta_pan_tx_flow
586  *
587  * Description      Set the application flow control state.
588  *
589  *
590  * Returns          void
591  *
592  ******************************************************************************/
bta_pan_tx_flow(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)593 void bta_pan_tx_flow(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) {
594   p_scb->app_flow_enable = p_data->ci_tx_flow.enable;
595 }
596 
597 /*******************************************************************************
598  *
599  * Function         bta_pan_write_buf
600  *
601  * Description      Handle a bta_pan_ci_rx_writebuf() and send data to PAN.
602  *
603  *
604  * Returns          void
605  *
606  ******************************************************************************/
bta_pan_write_buf(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)607 void bta_pan_write_buf(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) {
608   if ((bta_pan_cb.flow_mask & BTA_PAN_RX_MASK) == BTA_PAN_RX_PUSH_BUF) {
609     bta_pan_pm_conn_busy(p_scb);
610 
611     PAN_WriteBuf(p_scb->handle, ((tBTA_PAN_DATA_PARAMS*)p_data)->dst,
612                  ((tBTA_PAN_DATA_PARAMS*)p_data)->src,
613                  ((tBTA_PAN_DATA_PARAMS*)p_data)->protocol, (BT_HDR*)p_data,
614                  ((tBTA_PAN_DATA_PARAMS*)p_data)->ext);
615     bta_pan_pm_conn_idle(p_scb);
616   }
617 }
618 
619 /*******************************************************************************
620  *
621  * Function         bta_pan_free_buf
622  *
623  * Description      Frees the data buffer during closing state
624  *
625  *
626  * Returns          void
627  *
628  ******************************************************************************/
bta_pan_free_buf(tBTA_PAN_SCB *,tBTA_PAN_DATA * p_data)629 void bta_pan_free_buf(tBTA_PAN_SCB* /* p_scb */, tBTA_PAN_DATA* p_data) {
630   osi_free(p_data);
631 }
632 
633 #endif /* PAN_INCLUDED */
634