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 "bd.h"
32#include "gki.h"
33#include "pan_api.h"
34#include "bta_pan_api.h"
35#include "bta_pan_int.h"
36#include "bta_pan_co.h"
37#include <string.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_conn_state_cback
47**
48** Description      Connection state callback from Pan profile
49**
50**
51** Returns          void
52**
53*******************************************************************************/
54static void bta_pan_conn_state_cback(UINT16 handle, BD_ADDR bd_addr, tPAN_RESULT state,
55                                     BOOLEAN is_role_change, UINT8 src_role, UINT8 dst_role)
56{
57
58    tBTA_PAN_CONN * p_buf;
59    tBTA_PAN_SCB     *p_scb;
60
61
62    if ((p_buf = (tBTA_PAN_CONN *) GKI_getbuf(sizeof(tBTA_PAN_CONN))) != NULL)
63    {
64        if((state == PAN_SUCCESS) && !is_role_change)
65        {
66            p_buf->hdr.event = BTA_PAN_CONN_OPEN_EVT;
67            if((p_scb = bta_pan_scb_by_handle(handle)) == NULL)
68            {
69                /* allocate an scb */
70                p_scb = bta_pan_scb_alloc();
71
72            }
73            /* we have exceeded maximum number of connections */
74            if(!p_scb)
75            {
76                PAN_Disconnect (handle);
77                return;
78            }
79
80            p_scb->handle = handle;
81            p_scb->local_role = src_role;
82            p_scb->peer_role = dst_role;
83            p_scb->pan_flow_enable = TRUE;
84            bdcpy(p_scb->bd_addr, bd_addr);
85            GKI_init_q(&p_scb->data_queue);
86
87            if(src_role == PAN_ROLE_CLIENT)
88                p_scb->app_id = bta_pan_cb.app_id[0];
89            else if (src_role == PAN_ROLE_GN_SERVER)
90                p_scb->app_id = bta_pan_cb.app_id[1];
91            else if (src_role == PAN_ROLE_NAP_SERVER)
92                p_scb->app_id = bta_pan_cb.app_id[2];
93
94        }
95        else if((state != PAN_SUCCESS) && !is_role_change)
96        {
97            p_buf->hdr.event = BTA_PAN_CONN_CLOSE_EVT;
98
99        }
100        else
101        {
102            return;
103        }
104
105        p_buf->result = state;
106        p_buf->hdr.layer_specific = handle;
107        bta_sys_sendmsg(p_buf);
108
109    }
110
111
112
113}
114
115/*******************************************************************************
116**
117** Function         bta_pan_data_flow_cb
118**
119** Description      Data flow status callback from PAN
120**
121**
122** Returns          void
123**
124*******************************************************************************/
125static void bta_pan_data_flow_cb(UINT16 handle, tPAN_RESULT result)
126{
127    BT_HDR  *p_buf;
128    tBTA_PAN_SCB *p_scb;
129
130    if((p_scb = bta_pan_scb_by_handle(handle)) == NULL)
131        return;
132
133    if(result == PAN_TX_FLOW_ON)
134    {
135        if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL)
136        {
137            p_buf->layer_specific = handle;
138            p_buf->event = BTA_PAN_BNEP_FLOW_ENABLE_EVT;
139            bta_sys_sendmsg(p_buf);
140        }
141        bta_pan_co_rx_flow(handle, p_scb->app_id, TRUE);
142
143    }
144    else if(result == PAN_TX_FLOW_OFF)
145    {
146
147        p_scb->pan_flow_enable = FALSE;
148        bta_pan_co_rx_flow(handle, p_scb->app_id, FALSE);
149
150    }
151
152
153}
154
155
156/*******************************************************************************
157**
158** Function         bta_pan_data_buf_ind_cback
159**
160** Description      data indication callback from pan profile
161**
162**
163** Returns          void
164**
165*******************************************************************************/
166static void bta_pan_data_buf_ind_cback(UINT16 handle, BD_ADDR src, BD_ADDR dst, UINT16 protocol, BT_HDR *p_buf,
167                                   BOOLEAN ext, BOOLEAN forward)
168{
169    tBTA_PAN_SCB *p_scb;
170    BT_HDR * p_event;
171    BT_HDR *p_new_buf;
172
173    if ( sizeof(tBTA_PAN_DATA_PARAMS) > p_buf->offset )
174    {
175        /* offset smaller than data structure in front of actual data */
176        p_new_buf = (BT_HDR *)GKI_getpoolbuf( PAN_POOL_ID );
177        if(!p_new_buf)
178        {
179            APPL_TRACE_WARNING0("Cannot get a PAN GKI buffer");
180            GKI_freebuf( p_buf );
181            return;
182        }
183        else
184        {
185            memcpy( (UINT8 *)(p_new_buf+1)+sizeof(tBTA_PAN_DATA_PARAMS), (UINT8 *)(p_buf+1)+p_buf->offset, p_buf->len );
186            p_new_buf->len    = p_buf->len;
187            p_new_buf->offset = sizeof(tBTA_PAN_DATA_PARAMS);
188            GKI_freebuf( p_buf );
189        }
190    }
191    else
192    {
193        p_new_buf = p_buf;
194    }
195    /* copy params into the space before the data */
196    bdcpy(((tBTA_PAN_DATA_PARAMS *)p_new_buf)->src, src);
197    bdcpy(((tBTA_PAN_DATA_PARAMS *)p_new_buf)->dst, dst);
198    ((tBTA_PAN_DATA_PARAMS *)p_new_buf)->protocol = protocol;
199    ((tBTA_PAN_DATA_PARAMS *)p_new_buf)->ext = ext;
200    ((tBTA_PAN_DATA_PARAMS *)p_new_buf)->forward = forward;
201
202
203    if((p_scb = bta_pan_scb_by_handle(handle)) == NULL)
204    {
205
206        GKI_freebuf( p_new_buf );
207        return;
208    }
209
210    GKI_enqueue(&p_scb->data_queue, p_new_buf);
211    if ((p_event = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL)
212    {
213        p_event->layer_specific = handle;
214        p_event->event = BTA_PAN_RX_FROM_BNEP_READY_EVT;
215        bta_sys_sendmsg(p_event);
216    }
217
218}
219
220
221/*******************************************************************************
222**
223** Function         bta_pan_pfilt_ind_cback
224**
225** Description
226**
227**
228** Returns          void
229**
230*******************************************************************************/
231static void bta_pan_pfilt_ind_cback(UINT16 handle, BOOLEAN indication,tBNEP_RESULT result,
232                                    UINT16 num_filters, UINT8 *p_filters)
233{
234
235    bta_pan_co_pfilt_ind(handle, indication, (tBTA_PAN_STATUS)((result == BNEP_SUCCESS) ? BTA_PAN_SUCCESS : BTA_PAN_FAIL),
236                                    num_filters, p_filters);
237
238
239}
240
241
242/*******************************************************************************
243**
244** Function         bta_pan_mfilt_ind_cback
245**
246** Description
247**
248**
249** Returns          void
250**
251*******************************************************************************/
252static void bta_pan_mfilt_ind_cback(UINT16 handle, BOOLEAN indication,tBNEP_RESULT result,
253                                    UINT16 num_mfilters, UINT8 *p_mfilters)
254{
255
256    bta_pan_co_mfilt_ind(handle, indication, (tBTA_PAN_STATUS)((result == BNEP_SUCCESS) ? BTA_PAN_SUCCESS : BTA_PAN_FAIL),
257                                    num_mfilters, p_mfilters);
258}
259
260
261
262/*******************************************************************************
263**
264** Function         bta_pan_enable
265**
266** Description
267**
268**
269**
270** Returns          void
271**
272*******************************************************************************/
273void bta_pan_enable(tBTA_PAN_DATA *p_data)
274{
275    tPAN_REGISTER reg_data;
276    UINT16  initial_discoverability;
277    UINT16  initial_connectability;
278    UINT16  d_window;
279    UINT16  d_interval;
280    UINT16  c_window;
281    UINT16  c_interval;
282
283    bta_pan_cb.p_cback = p_data->api_enable.p_cback;
284
285    reg_data.pan_conn_state_cb  = bta_pan_conn_state_cback;
286    reg_data.pan_bridge_req_cb  = NULL;
287    reg_data.pan_data_buf_ind_cb = bta_pan_data_buf_ind_cback;
288    reg_data.pan_data_ind_cb = NULL;
289    reg_data.pan_pfilt_ind_cb = bta_pan_pfilt_ind_cback;
290    reg_data.pan_mfilt_ind_cb = bta_pan_mfilt_ind_cback;
291    reg_data.pan_tx_data_flow_cb = bta_pan_data_flow_cb;
292
293    /* read connectability and discoverability settings.
294    Pan profile changes the settings. We have to change it back to
295    be consistent with other bta subsystems */
296    initial_connectability = BTM_ReadConnectability(&c_window, &c_interval);
297    initial_discoverability = BTM_ReadDiscoverability(&d_window, &d_interval);
298
299
300    PAN_Register (&reg_data);
301
302
303    /* set it back to original value */
304    BTM_SetDiscoverability(initial_discoverability, d_window, d_interval);
305    BTM_SetConnectability(initial_connectability, c_window, c_interval);
306
307    bta_pan_cb.flow_mask = bta_pan_co_init(&bta_pan_cb.q_level);
308    bta_pan_cb.p_cback(BTA_PAN_ENABLE_EVT, NULL);
309
310}
311
312/*******************************************************************************
313**
314** Function         bta_pan_set_role
315**
316** Description
317**
318** Returns          void
319**
320*******************************************************************************/
321void bta_pan_set_role(tBTA_PAN_DATA *p_data)
322{
323    tPAN_RESULT status;
324    tBTA_PAN_SET_ROLE set_role;
325    UINT8  sec[3];
326
327
328    bta_pan_cb.app_id[0] = p_data->api_set_role.user_app_id;
329    bta_pan_cb.app_id[1] = p_data->api_set_role.gn_app_id;
330    bta_pan_cb.app_id[2] = p_data->api_set_role.nap_app_id;
331
332    sec[0] = p_data->api_set_role.user_sec_mask;
333    sec[1] = p_data->api_set_role.gn_sec_mask;
334    sec[2] = p_data->api_set_role.nap_sec_mask;
335
336    /* set security correctly in api and here */
337    status = PAN_SetRole(p_data->api_set_role.role, sec,
338                                     p_data->api_set_role.user_name,
339                                     p_data->api_set_role.gn_name,
340                                     p_data->api_set_role.nap_name);
341
342    set_role.role = p_data->api_set_role.role;
343    if(status == PAN_SUCCESS)
344    {
345        if(p_data->api_set_role.role & PAN_ROLE_NAP_SERVER )
346            bta_sys_add_uuid(UUID_SERVCLASS_NAP);
347        else
348            bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
349
350        if(p_data->api_set_role.role & PAN_ROLE_GN_SERVER )
351            bta_sys_add_uuid(UUID_SERVCLASS_GN);
352        else
353            bta_sys_remove_uuid(UUID_SERVCLASS_GN);
354
355        if(p_data->api_set_role.role & PAN_ROLE_CLIENT )
356            bta_sys_add_uuid(UUID_SERVCLASS_PANU);
357        else
358            bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
359
360        set_role.status = BTA_PAN_SUCCESS;
361    }
362    /* if status is not success clear everything */
363    else
364    {
365        PAN_SetRole(0, 0, NULL, NULL, NULL);
366        bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
367        bta_sys_remove_uuid(UUID_SERVCLASS_GN);
368        bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
369        set_role.status = BTA_PAN_FAIL;
370    }
371    bta_pan_cb.p_cback(BTA_PAN_SET_ROLE_EVT, (tBTA_PAN *)&set_role);
372}
373
374
375
376/*******************************************************************************
377**
378** Function         bta_pan_disable
379**
380** Description
381**
382**
383**
384** Returns          void
385**
386*******************************************************************************/
387void bta_pan_disable(void)
388{
389
390    BT_HDR *p_buf;
391    tBTA_PAN_SCB *p_scb = &bta_pan_cb.scb[0];
392    UINT8 i;
393
394
395    /* close all connections */
396    PAN_SetRole (0, NULL, NULL, NULL, NULL);
397
398#if ( BTM_EIR_SERVER_INCLUDED == TRUE )&&(BTA_EIR_CANNED_UUID_LIST != TRUE)
399    bta_sys_remove_uuid(UUID_SERVCLASS_NAP);
400    bta_sys_remove_uuid(UUID_SERVCLASS_GN);
401    bta_sys_remove_uuid(UUID_SERVCLASS_PANU);
402#endif
403    /* free all queued up data buffers */
404    for (i = 0; i < BTA_PAN_NUM_CONN; i++, p_scb++)
405    {
406        if (p_scb->in_use)
407        {
408            while((p_buf = (BT_HDR *)GKI_dequeue(&p_scb->data_queue)) != NULL)
409                GKI_freebuf(p_buf);
410
411            bta_pan_co_close(p_scb->handle, p_scb->app_id);
412
413        }
414    }
415
416
417
418    PAN_Deregister();
419
420}
421
422/*******************************************************************************
423**
424** Function         bta_pan_open
425**
426** Description
427**
428** Returns          void
429**
430*******************************************************************************/
431void bta_pan_open(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
432{
433    tPAN_RESULT status;
434    tBTA_PAN_OPEN data;
435    tBTA_PAN_OPENING    opening;
436
437
438    status = PAN_Connect (p_data->api_open.bd_addr, p_data->api_open.local_role, p_data->api_open.peer_role,
439                        &p_scb->handle);
440
441
442    if(status == PAN_SUCCESS)
443    {
444
445        bdcpy(p_scb->bd_addr, p_data->api_open.bd_addr);
446        p_scb->local_role = p_data->api_open.local_role;
447        p_scb->peer_role = p_data->api_open.peer_role;
448        bdcpy(opening.bd_addr, p_data->api_open.bd_addr);
449        opening.handle = p_scb->handle;
450        bta_pan_cb.p_cback(BTA_PAN_OPENING_EVT, (tBTA_PAN *)&opening);
451
452
453    }
454    else
455    {
456        bta_pan_scb_dealloc(p_scb);
457        bdcpy(data.bd_addr, p_data->api_open.bd_addr);
458        data.status = BTA_PAN_FAIL;
459        bta_pan_cb.p_cback(BTA_PAN_OPEN_EVT, (tBTA_PAN *)&data);
460    }
461
462}
463
464
465/*******************************************************************************
466**
467** Function         bta_pan_close
468**
469** Description
470**
471**
472**
473** Returns          void
474**
475*******************************************************************************/
476void bta_pan_api_close (tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
477{
478    tBTA_PAN_CONN * p_buf;
479
480    PAN_Disconnect (p_scb->handle);
481
482
483    /* send an event to BTA so that application will get the connection
484       close event */
485    if ((p_buf = (tBTA_PAN_CONN *) GKI_getbuf(sizeof(tBTA_PAN_CONN))) != NULL)
486    {
487        p_buf->hdr.event = BTA_PAN_CONN_CLOSE_EVT;
488
489        p_buf->hdr.layer_specific = p_scb->handle;
490        bta_sys_sendmsg(p_buf);
491
492    }
493}
494
495
496/*******************************************************************************
497**
498** Function         bta_pan_conn_open
499**
500** Description      process connection open event
501**
502** Returns          void
503**
504*******************************************************************************/
505void bta_pan_conn_open(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
506{
507
508    tBTA_PAN_OPEN data;
509
510    bdcpy(data.bd_addr, p_scb->bd_addr);
511    data.handle = p_scb->handle;
512    data.local_role = p_scb->local_role;
513    data.peer_role = p_scb->peer_role;
514
515    if(p_data->conn.result == PAN_SUCCESS)
516    {
517        data.status = BTA_PAN_SUCCESS;
518        bta_pan_co_open(p_scb->handle, p_scb->app_id, p_scb->local_role, p_scb->peer_role, p_scb->bd_addr);
519
520    }
521    else
522    {
523        bta_pan_scb_dealloc(p_scb);
524        data.status = BTA_PAN_FAIL;
525    }
526
527    p_scb->pan_flow_enable = TRUE;
528    p_scb->app_flow_enable = TRUE;
529
530    bta_sys_conn_open( BTA_ID_PAN ,p_scb->app_id, p_scb->bd_addr);
531
532    bta_pan_cb.p_cback(BTA_PAN_OPEN_EVT, (tBTA_PAN *)&data);
533
534
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*******************************************************************************/
548void bta_pan_conn_close(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
549{
550
551    tBTA_PAN_CLOSE data;
552    BT_HDR *p_buf;
553
554    data.handle = p_data->hdr.layer_specific;
555
556
557    bta_sys_conn_close( BTA_ID_PAN ,p_scb->app_id, p_scb->bd_addr);
558
559    /* free all queued up data buffers */
560    while((p_buf = (BT_HDR *)GKI_dequeue(&p_scb->data_queue)) != NULL)
561        GKI_freebuf(p_buf);
562
563    GKI_init_q(&p_scb->data_queue);
564
565    bta_pan_co_close(p_scb->handle, p_scb->app_id);
566
567    bta_pan_scb_dealloc(p_scb);
568
569    bta_pan_cb.p_cback(BTA_PAN_CLOSE_EVT, (tBTA_PAN *)&data);
570
571}
572
573
574
575
576/*******************************************************************************
577**
578** Function         bta_pan_rx_path
579**
580** Description      Handle data on the RX path (data sent from the phone to
581**                  BTA).
582**
583**
584** Returns          void
585**
586*******************************************************************************/
587void bta_pan_rx_path(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
588{
589    /* if data path configured for rx pull */
590    if ((bta_pan_cb.flow_mask & BTA_PAN_RX_MASK) == BTA_PAN_RX_PULL)
591    {
592        /* if we can accept data */
593        if (p_scb->pan_flow_enable == TRUE)
594        {
595            /* call application callout function for rx path */
596            bta_pan_co_rx_path(p_scb->handle, p_scb->app_id);
597        }
598    }
599    /* else data path configured for rx push */
600    else
601    {
602
603    }
604}
605
606/*******************************************************************************
607**
608** Function         bta_pan_tx_path
609**
610** Description      Handle the TX data path (data sent from BTA to the phone).
611**
612**
613** Returns          void
614**
615*******************************************************************************/
616void bta_pan_tx_path(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
617{
618
619    BT_HDR * p_buf;
620    /* if data path configured for tx pull */
621    if ((bta_pan_cb.flow_mask & BTA_PAN_TX_MASK) == BTA_PAN_TX_PULL)
622    {
623        /* call application callout function for tx path */
624        bta_pan_co_tx_path(p_scb->handle, p_scb->app_id);
625
626        /* free data that exceeds queue level */
627        while(p_scb->data_queue.count > bta_pan_cb.q_level)
628            GKI_freebuf(GKI_dequeue(&p_scb->data_queue));
629    }
630    /* if configured for zero copy push */
631    else if ((bta_pan_cb.flow_mask & BTA_PAN_TX_MASK) == BTA_PAN_TX_PUSH_BUF)
632    {
633        /* if app can accept data */
634        if (p_scb->app_flow_enable == TRUE)
635        {
636            /* read data from the queue */
637            if ((p_buf = (BT_HDR *)GKI_dequeue(&p_scb->data_queue)) != NULL)
638            {
639                /* send data to application */
640                bta_pan_co_tx_writebuf(p_scb->handle,
641                                        p_scb->app_id,
642                                        ((tBTA_PAN_DATA_PARAMS *)p_buf)->src,
643                                        ((tBTA_PAN_DATA_PARAMS *)p_buf)->dst,
644                                        ((tBTA_PAN_DATA_PARAMS *)p_buf)->protocol,
645                                        p_buf,
646                                        ((tBTA_PAN_DATA_PARAMS *)p_buf)->ext,
647                                        ((tBTA_PAN_DATA_PARAMS *)p_buf)->forward);
648
649            }
650            /* free data that exceeds queue level  */
651            while(p_scb->data_queue.count > bta_pan_cb.q_level)
652                GKI_freebuf(GKI_dequeue(&p_scb->data_queue));
653
654            /* if there is more data to be passed to
655            upper layer */
656            if(p_scb->data_queue.count)
657            {
658                if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL)
659                {
660                    p_buf->layer_specific = p_scb->handle;
661                    p_buf->event = BTA_PAN_RX_FROM_BNEP_READY_EVT;
662                    bta_sys_sendmsg(p_buf);
663                }
664
665            }
666
667        }
668    }
669}
670
671/*******************************************************************************
672**
673** Function         bta_pan_tx_flow
674**
675** Description      Set the application flow control state.
676**
677**
678** Returns          void
679**
680*******************************************************************************/
681void bta_pan_tx_flow(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
682{
683    p_scb->app_flow_enable = p_data->ci_tx_flow.enable;
684}
685
686/*******************************************************************************
687**
688** Function         bta_pan_write_buf
689**
690** Description      Handle a bta_pan_ci_rx_writebuf() and send data to PAN.
691**
692**
693** Returns          void
694**
695*******************************************************************************/
696void bta_pan_write_buf(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
697{
698    if ((bta_pan_cb.flow_mask & BTA_PAN_RX_MASK) == BTA_PAN_RX_PUSH_BUF)
699    {
700
701        PAN_WriteBuf (p_scb->handle,
702                      ((tBTA_PAN_DATA_PARAMS *)p_data)->dst,
703                      ((tBTA_PAN_DATA_PARAMS *)p_data)->src,
704                      ((tBTA_PAN_DATA_PARAMS *)p_data)->protocol,
705                      (BT_HDR *)p_data,
706                      ((tBTA_PAN_DATA_PARAMS *)p_data)->ext);
707
708    }
709}
710
711/*******************************************************************************
712**
713** Function         bta_pan_free_buf
714**
715** Description      Frees the data buffer during closing state
716**
717**
718** Returns          void
719**
720*******************************************************************************/
721void bta_pan_free_buf(tBTA_PAN_SCB *p_scb, tBTA_PAN_DATA *p_data)
722{
723
724    GKI_freebuf(p_data);
725
726}
727
728#endif /* PAN_INCLUDED */
729