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 <cstddef>
30 #include <cstdint>
31 #include <cstring>
32 #include <string>
33 
34 #include "bta/include/bta_pan_co.h"
35 #include "bta/pan/bta_pan_int.h"
36 #include "bta_api.h"
37 #include "bta_pan_api.h"
38 #include "bta_sys.h"
39 #include "internal_include/bt_target.h"  // PAN_INCLUDED
40 #include "osi/include/allocator.h"
41 #include "osi/include/fixed_queue.h"
42 #include "stack/include/bt_hdr.h"
43 #include "stack/include/bt_uuid16.h"
44 #include "stack/include/pan_api.h"
45 #include "types/raw_address.h"
46 
47 using namespace bluetooth;
48 
49 #if (PAN_INCLUDED == TRUE)
50 
51 /* RX and TX data flow mask */
52 #define BTA_PAN_RX_MASK 0x0F
53 #define BTA_PAN_TX_MASK 0xF0
54 
55 /*******************************************************************************
56  *
57  * Function    bta_pan_pm_conn_busy
58  *
59  * Description set pan pm connection busy state
60  *
61  * Params      p_scb: state machine control block of pan connection
62  *
63  * Returns     void
64  *
65  ******************************************************************************/
bta_pan_pm_conn_busy(tBTA_PAN_SCB * p_scb)66 static void bta_pan_pm_conn_busy(tBTA_PAN_SCB* p_scb) {
67   if ((p_scb != NULL) && (p_scb->state != BTA_PAN_IDLE_ST)) {
68     bta_sys_busy(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr);
69   }
70 }
71 
72 /*******************************************************************************
73  *
74  * Function    bta_pan_pm_conn_idle
75  *
76  * Description set pan pm connection idle state
77  *
78  * Params      p_scb: state machine control block of pan connection
79  *
80  * Returns     void
81  *
82  ******************************************************************************/
bta_pan_pm_conn_idle(tBTA_PAN_SCB * p_scb)83 static void bta_pan_pm_conn_idle(tBTA_PAN_SCB* p_scb) {
84   if ((p_scb != NULL) && (p_scb->state != BTA_PAN_IDLE_ST)) {
85     bta_sys_idle(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr);
86   }
87 }
88 
89 /*******************************************************************************
90  *
91  * Function         bta_pan_conn_state_cback
92  *
93  * Description      Connection state callback from Pan profile
94  *
95  *
96  * Returns          void
97  *
98  ******************************************************************************/
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)99 static void bta_pan_conn_state_cback(uint16_t handle, const RawAddress& bd_addr, tPAN_RESULT state,
100                                      bool is_role_change, uint8_t src_role, uint8_t dst_role) {
101   tBTA_PAN_SCB* p_scb;
102   tBTA_PAN_CONN* p_buf = (tBTA_PAN_CONN*)osi_malloc(sizeof(tBTA_PAN_CONN));
103 
104   if ((state == PAN_SUCCESS) && !is_role_change) {
105     p_buf->hdr.event = BTA_PAN_CONN_OPEN_EVT;
106     p_scb = bta_pan_scb_by_handle(handle);
107     if (p_scb == NULL) {
108       /* allocate an scb */
109       p_scb = bta_pan_scb_alloc();
110     }
111     /* we have exceeded maximum number of connections */
112     if (!p_scb) {
113       PAN_Disconnect(handle);
114       return;
115     }
116 
117     p_scb->handle = handle;
118     p_scb->local_role = src_role;
119     p_scb->peer_role = dst_role;
120     p_scb->pan_flow_enable = true;
121     p_scb->bd_addr = bd_addr;
122     p_scb->data_queue = fixed_queue_new(SIZE_MAX);
123 
124     if (src_role == PAN_ROLE_CLIENT) {
125       p_scb->app_id = bta_pan_cb.app_id[0];
126     } else if (src_role == PAN_ROLE_NAP_SERVER) {
127       p_scb->app_id = bta_pan_cb.app_id[2];
128     }
129   } else if ((state != PAN_SUCCESS) && !is_role_change) {
130     p_buf->hdr.event = BTA_PAN_CONN_CLOSE_EVT;
131   } else {
132     return;
133   }
134 
135   p_buf->result = state;
136   p_buf->hdr.layer_specific = handle;
137 
138   bta_sys_sendmsg(p_buf);
139 }
140 
141 /*******************************************************************************
142  *
143  * Function         bta_pan_data_flow_cb
144  *
145  * Description      Data flow status callback from PAN
146  *
147  *
148  * Returns          void
149  *
150  ******************************************************************************/
bta_pan_data_flow_cb(uint16_t handle,tPAN_RESULT result)151 static void bta_pan_data_flow_cb(uint16_t handle, tPAN_RESULT result) {
152   tBTA_PAN_SCB* p_scb;
153 
154   p_scb = bta_pan_scb_by_handle(handle);
155   if (p_scb == NULL) {
156     return;
157   }
158 
159   if (result == PAN_TX_FLOW_ON) {
160     BT_HDR_RIGID* p_buf = (BT_HDR_RIGID*)osi_malloc(sizeof(BT_HDR_RIGID));
161     p_buf->layer_specific = handle;
162     p_buf->event = BTA_PAN_BNEP_FLOW_ENABLE_EVT;
163     bta_sys_sendmsg(p_buf);
164     bta_pan_co_rx_flow(handle, p_scb->app_id, true);
165   } else if (result == PAN_TX_FLOW_OFF) {
166     p_scb->pan_flow_enable = false;
167     bta_pan_co_rx_flow(handle, p_scb->app_id, false);
168   }
169 }
170 
171 /*******************************************************************************
172  *
173  * Function         bta_pan_data_buf_ind_cback
174  *
175  * Description      data indication callback from pan profile
176  *
177  *
178  * Returns          void
179  *
180  ******************************************************************************/
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)181 static void bta_pan_data_buf_ind_cback(uint16_t handle, const RawAddress& src,
182                                        const RawAddress& dst, uint16_t protocol, BT_HDR* p_buf,
183                                        bool ext, bool forward) {
184   tBTA_PAN_SCB* p_scb = bta_pan_scb_by_handle(handle);
185   if (p_scb == NULL) {
186     return;
187   }
188 
189   if (sizeof(BT_HDR) + sizeof(tBTA_PAN_DATA_PARAMS) + p_buf->len > PAN_BUF_SIZE) {
190     log::error("received buffer length too large: {}", p_buf->len);
191     return;
192   }
193 
194   BT_HDR* p_new_buf = (BT_HDR*)osi_malloc(PAN_BUF_SIZE);
195   memcpy((uint8_t*)(p_new_buf + 1) + sizeof(tBTA_PAN_DATA_PARAMS),
196          (uint8_t*)(p_buf + 1) + p_buf->offset, p_buf->len);
197   p_new_buf->len = p_buf->len;
198   p_new_buf->offset = sizeof(tBTA_PAN_DATA_PARAMS);
199 
200   /* copy params into the space before the data */
201   ((tBTA_PAN_DATA_PARAMS*)p_new_buf)->src = src;
202   ((tBTA_PAN_DATA_PARAMS*)p_new_buf)->dst = dst;
203   ((tBTA_PAN_DATA_PARAMS*)p_new_buf)->protocol = protocol;
204   ((tBTA_PAN_DATA_PARAMS*)p_new_buf)->ext = ext;
205   ((tBTA_PAN_DATA_PARAMS*)p_new_buf)->forward = forward;
206 
207   fixed_queue_enqueue(p_scb->data_queue, p_new_buf);
208   BT_HDR_RIGID* p_event = (BT_HDR_RIGID*)osi_malloc(sizeof(BT_HDR_RIGID));
209   p_event->layer_specific = handle;
210   p_event->event = BTA_PAN_RX_FROM_BNEP_READY_EVT;
211   bta_sys_sendmsg(p_event);
212 }
213 
214 /*******************************************************************************
215  *
216  * Function         bta_pan_pfilt_ind_cback
217  *
218  * Description
219  *
220  *
221  * Returns          void
222  *
223  ******************************************************************************/
bta_pan_pfilt_ind_cback(uint16_t handle,bool indication,tPAN_RESULT result,uint16_t num_filters,uint8_t * p_filters)224 static void bta_pan_pfilt_ind_cback(uint16_t handle, bool indication, tPAN_RESULT result,
225                                     uint16_t num_filters, uint8_t* p_filters) {
226   bta_pan_co_pfilt_ind(handle, indication, (result == PAN_SUCCESS) ? BTA_PAN_SUCCESS : BTA_PAN_FAIL,
227                        num_filters, p_filters);
228 }
229 
230 /*******************************************************************************
231  *
232  * Function         bta_pan_mfilt_ind_cback
233  *
234  * Description
235  *
236  *
237  * Returns          void
238  *
239  ******************************************************************************/
bta_pan_mfilt_ind_cback(uint16_t handle,bool indication,tPAN_RESULT result,uint16_t num_mfilters,uint8_t * p_mfilters)240 static void bta_pan_mfilt_ind_cback(uint16_t handle, bool indication, tPAN_RESULT result,
241                                     uint16_t num_mfilters, uint8_t* p_mfilters) {
242   bta_pan_co_mfilt_ind(handle, indication, (result == PAN_SUCCESS) ? BTA_PAN_SUCCESS : BTA_PAN_FAIL,
243                        num_mfilters, p_mfilters);
244 }
245 
246 /*******************************************************************************
247  *
248  * Function         bta_pan_has_multiple_connections
249  *
250  * Description      Check whether there are multiple GN/NAP connections to
251  *                  different devices
252  *
253  *
254  * Returns          bool
255  *
256  ******************************************************************************/
bta_pan_has_multiple_connections(uint8_t app_id)257 static bool bta_pan_has_multiple_connections(uint8_t app_id) {
258   tBTA_PAN_SCB* p_scb = NULL;
259   bool found = false;
260   RawAddress bd_addr;
261 
262   for (uint8_t index = 0; index < BTA_PAN_NUM_CONN; index++) {
263     p_scb = &bta_pan_cb.scb[index];
264     if (p_scb->in_use && app_id == p_scb->app_id) {
265       /* save temp bd_addr */
266       bd_addr = p_scb->bd_addr;
267       found = true;
268       break;
269     }
270   }
271 
272   /* If cannot find a match then there is no connection at all */
273   if (!found) {
274     return false;
275   }
276 
277   /* Find whether there is another connection with different device other than
278      PANU.
279       Could be same service or different service */
280   for (uint8_t index = 0; index < BTA_PAN_NUM_CONN; index++) {
281     p_scb = &bta_pan_cb.scb[index];
282     if (p_scb->in_use && p_scb->app_id != bta_pan_cb.app_id[0] && 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 
303   bta_pan_cb.p_cback = p_data->api_enable.p_cback;
304 
305   reg_data.pan_conn_state_cb = bta_pan_conn_state_cback;
306   reg_data.pan_bridge_req_cb = NULL;
307   reg_data.pan_data_buf_ind_cb = bta_pan_data_buf_ind_cback;
308   reg_data.pan_data_ind_cb = NULL;
309   reg_data.pan_pfilt_ind_cb = bta_pan_pfilt_ind_cback;
310   reg_data.pan_mfilt_ind_cb = bta_pan_mfilt_ind_cback;
311   reg_data.pan_tx_data_flow_cb = bta_pan_data_flow_cb;
312 
313   PAN_Register(&reg_data);
314 
315   bta_pan_cb.flow_mask = bta_pan_co_init(&bta_pan_cb.q_level);
316   bta_pan_cb.p_cback(BTA_PAN_ENABLE_EVT, NULL);
317 }
318 
319 /*******************************************************************************
320  *
321  * Function         bta_pan_set_role
322  *
323  * Description
324  *
325  * Returns          void
326  *
327  ******************************************************************************/
bta_pan_set_role(tBTA_PAN_DATA * p_data)328 void bta_pan_set_role(tBTA_PAN_DATA* p_data) {
329   bta_pan_cb.app_id[0] = p_data->api_set_role.user_app_id;
330   bta_pan_cb.app_id[2] = p_data->api_set_role.nap_app_id;
331 
332   /* set security correctly in api and here */
333   tPAN_RESULT status =
334           PAN_SetRole(p_data->api_set_role.role, std::string(p_data->api_set_role.user_name),
335                       std::string(p_data->api_set_role.nap_name));
336 
337   tBTA_PAN bta_pan = {
338           .set_role =
339                   {
340                           .status = (status == PAN_SUCCESS) ? BTA_PAN_SUCCESS : BTA_PAN_FAIL,
341                           .role = p_data->api_set_role.role,
342                   },
343   };
344 
345   if (status == PAN_SUCCESS) {
346     if (p_data->api_set_role.role & PAN_ROLE_NAP_SERVER) {
347       bta_sys_add_uuid(UUID_SERVCLASS_NAP);
348     } else {
349       bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
350     }
351 
352     if (p_data->api_set_role.role & PAN_ROLE_CLIENT) {
353       bta_sys_add_uuid(UUID_SERVCLASS_PANU);
354     } else {
355       bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
356     }
357   } else {
358     /* if status is not success clear everything */
359     PAN_SetRole(0, std::string(), std::string());
360     bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
361     bta_sys_remove_uuid(UUID_SERVCLASS_GN);
362     bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
363   }
364   bta_pan_cb.p_cback(BTA_PAN_SET_ROLE_EVT, &bta_pan);
365 }
366 
367 /*******************************************************************************
368  *
369  * Function         bta_pan_disable
370  *
371  * Description
372  *
373  *
374  *
375  * Returns          void
376  *
377  ******************************************************************************/
bta_pan_disable(void)378 void bta_pan_disable(void) {
379   BT_HDR* p_buf;
380   tBTA_PAN_SCB* p_scb = &bta_pan_cb.scb[0];
381   uint8_t i;
382 
383   /* close all connections */
384   PAN_SetRole(0, std::string(), std::string());
385 
386   bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
387   bta_sys_remove_uuid(UUID_SERVCLASS_GN);
388   bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
389   /* free all queued up data buffers */
390   for (i = 0; i < BTA_PAN_NUM_CONN; i++, p_scb++) {
391     if (p_scb->in_use) {
392       while ((p_buf = (BT_HDR*)fixed_queue_try_dequeue(p_scb->data_queue)) != NULL) {
393         osi_free(p_buf);
394       }
395 
396       bta_pan_co_close(p_scb->handle, p_scb->app_id);
397     }
398   }
399 
400   PAN_Deregister();
401 }
402 
403 /*******************************************************************************
404  *
405  * Function         bta_pan_open
406  *
407  * Description
408  *
409  * Returns          void
410  *
411  ******************************************************************************/
bta_pan_open(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)412 void bta_pan_open(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) {
413   tPAN_RESULT status;
414   tBTA_PAN bta_pan;
415 
416   status = PAN_Connect(p_data->api_open.bd_addr, p_data->api_open.local_role,
417                        p_data->api_open.peer_role, &p_scb->handle);
418   log::verbose("pan connect status: {}", status);
419 
420   if (status == PAN_SUCCESS) {
421     p_scb->bd_addr = p_data->api_open.bd_addr;
422     p_scb->local_role = p_data->api_open.local_role;
423     p_scb->peer_role = p_data->api_open.peer_role;
424     bta_pan.opening.bd_addr = p_data->api_open.bd_addr;
425     bta_pan.opening.handle = p_scb->handle;
426     bta_pan_cb.p_cback(BTA_PAN_OPENING_EVT, &bta_pan);
427 
428   } else {
429     bta_pan_scb_dealloc(p_scb);
430     bta_pan.open.bd_addr = p_data->api_open.bd_addr;
431     bta_pan.open.status = BTA_PAN_FAIL;
432     bta_pan.open.local_role = p_data->api_open.local_role;
433     bta_pan.open.peer_role = p_data->api_open.peer_role;
434     bta_pan_cb.p_cback(BTA_PAN_OPEN_EVT, &bta_pan);
435   }
436 }
437 
438 /*******************************************************************************
439  *
440  * Function         bta_pan_close
441  *
442  * Description
443  *
444  *
445  *
446  * Returns          void
447  *
448  ******************************************************************************/
bta_pan_api_close(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA *)449 void bta_pan_api_close(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* /* p_data */) {
450   tBTA_PAN_CONN* p_buf = (tBTA_PAN_CONN*)osi_malloc(sizeof(tBTA_PAN_CONN));
451 
452   PAN_Disconnect(p_scb->handle);
453 
454   /*
455    * Send an event to BTA so that application will get the connection
456    * close event.
457    */
458   p_buf->hdr.event = BTA_PAN_CONN_CLOSE_EVT;
459   p_buf->hdr.layer_specific = p_scb->handle;
460 
461   bta_sys_sendmsg(p_buf);
462 }
463 
464 /*******************************************************************************
465  *
466  * Function         bta_pan_conn_open
467  *
468  * Description      process connection open event
469  *
470  * Returns          void
471  *
472  ******************************************************************************/
bta_pan_conn_open(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)473 void bta_pan_conn_open(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) {
474   tBTA_PAN bta_pan;
475 
476   log::verbose("pan connection result: {}", p_data->conn.result);
477 
478   bta_pan.open.bd_addr = p_scb->bd_addr;
479   bta_pan.open.handle = p_scb->handle;
480   bta_pan.open.local_role = p_scb->local_role;
481   bta_pan.open.peer_role = p_scb->peer_role;
482 
483   if (p_data->conn.result == PAN_SUCCESS) {
484     bta_pan.open.status = BTA_PAN_SUCCESS;
485     p_scb->pan_flow_enable = true;
486     p_scb->app_flow_enable = true;
487     bta_sys_conn_open(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr);
488   } else {
489     bta_pan_scb_dealloc(p_scb);
490     bta_pan.open.status = BTA_PAN_FAIL;
491   }
492 
493   p_scb->pan_flow_enable = true;
494   p_scb->app_flow_enable = true;
495 
496   /* If app_id is NAP/GN, check whether there are multiple connections.
497      If there are, provide a special app_id to dm to enforce central role only.
498      */
499   if (p_scb->app_id == bta_pan_cb.app_id[2] && bta_pan_has_multiple_connections(p_scb->app_id)) {
500     p_scb->app_id = BTA_APP_ID_PAN_MULTI;
501   }
502 
503   bta_sys_conn_open(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr);
504   bta_pan_cb.p_cback(BTA_PAN_OPEN_EVT, &bta_pan);
505 }
506 
507 /*******************************************************************************
508  *
509  * Function         bta_pan_conn_close
510  *
511  * Description      process connection close event
512  *
513  *
514  *
515  * Returns          void
516  *
517  ******************************************************************************/
bta_pan_conn_close(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)518 void bta_pan_conn_close(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) {
519   tBTA_PAN bta_pan;
520   BT_HDR* p_buf;
521 
522   bta_pan.close.handle = p_data->hdr.layer_specific;
523 
524   bta_sys_conn_close(BTA_ID_PAN, p_scb->app_id, p_scb->bd_addr);
525 
526   /* free all queued up data buffers */
527   while ((p_buf = (BT_HDR*)fixed_queue_try_dequeue(p_scb->data_queue)) != NULL) {
528     osi_free(p_buf);
529   }
530 
531   bta_pan_scb_dealloc(p_scb);
532 
533   bta_pan_cb.p_cback(BTA_PAN_CLOSE_EVT, &bta_pan);
534 }
535 
536 /*******************************************************************************
537  *
538  * Function         bta_pan_rx_path
539  *
540  * Description      Handle data on the RX path (data sent from the phone to
541  *                  BTA).
542  *
543  *
544  * Returns          void
545  *
546  ******************************************************************************/
bta_pan_rx_path(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA *)547 void bta_pan_rx_path(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* /* p_data */) {
548   /* if data path configured for rx pull */
549   if ((bta_pan_cb.flow_mask & BTA_PAN_RX_MASK) == BTA_PAN_RX_PULL) {
550     /* if we can accept data */
551     if (p_scb->pan_flow_enable) {
552       /* call application callout function for rx path */
553       bta_pan_co_rx_path(p_scb->handle, p_scb->app_id);
554     }
555   } else {
556     /* else data path configured for rx push */
557   }
558 }
559 
560 /*******************************************************************************
561  *
562  * Function         bta_pan_tx_path
563  *
564  * Description      Handle the TX data path (data sent from BTA to the phone).
565  *
566  *
567  * Returns          void
568  *
569  ******************************************************************************/
bta_pan_tx_path(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA *)570 void bta_pan_tx_path(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* /* p_data */) {
571   bta_pan_pm_conn_busy(p_scb);
572   /* call application callout function for tx path */
573   bta_pan_co_tx_path(p_scb->handle, p_scb->app_id);
574 
575   /* free data that exceeds queue level */
576   while (fixed_queue_length(p_scb->data_queue) > bta_pan_cb.q_level) {
577     BT_HDR* p_buf = (BT_HDR*)fixed_queue_try_dequeue(p_scb->data_queue);
578     if (p_buf != nullptr) {
579       osi_free(p_buf);
580     }
581   }
582 
583   bta_pan_pm_conn_idle(p_scb);
584 }
585 
586 /*******************************************************************************
587  *
588  * Function         bta_pan_tx_flow
589  *
590  * Description      Set the application flow control state.
591  *
592  *
593  * Returns          void
594  *
595  ******************************************************************************/
bta_pan_tx_flow(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)596 void bta_pan_tx_flow(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) {
597   p_scb->app_flow_enable = p_data->ci_tx_flow.enable;
598 }
599 
600 /*******************************************************************************
601  *
602  * Function         bta_pan_write_buf
603  *
604  * Description      Handle a bta_pan_ci_rx_writebuf() and send data to PAN.
605  *
606  *
607  * Returns          void
608  *
609  ******************************************************************************/
bta_pan_write_buf(tBTA_PAN_SCB * p_scb,tBTA_PAN_DATA * p_data)610 void bta_pan_write_buf(tBTA_PAN_SCB* p_scb, tBTA_PAN_DATA* p_data) {
611   if ((bta_pan_cb.flow_mask & BTA_PAN_RX_MASK) == BTA_PAN_RX_PUSH_BUF) {
612     bta_pan_pm_conn_busy(p_scb);
613 
614     PAN_WriteBuf(p_scb->handle, ((tBTA_PAN_DATA_PARAMS*)p_data)->dst,
615                  ((tBTA_PAN_DATA_PARAMS*)p_data)->src, ((tBTA_PAN_DATA_PARAMS*)p_data)->protocol,
616                  (BT_HDR*)p_data, ((tBTA_PAN_DATA_PARAMS*)p_data)->ext);
617     bta_pan_pm_conn_idle(p_scb);
618   }
619 }
620 
621 /*******************************************************************************
622  *
623  * Function         bta_pan_free_buf
624  *
625  * Description      Frees the data buffer during closing state
626  *
627  *
628  * Returns          void
629  *
630  ******************************************************************************/
bta_pan_free_buf(tBTA_PAN_SCB *,tBTA_PAN_DATA * p_data)631 void bta_pan_free_buf(tBTA_PAN_SCB* /* p_scb */, tBTA_PAN_DATA* p_data) { osi_free(p_data); }
632 
633 #endif /* PAN_INCLUDED */
634