1 /******************************************************************************
2 *
3 * Copyright (C) 2008-2012 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 main ATT functions
22 *
23 ******************************************************************************/
24
25 #include "common/bt_target.h"
26
27 #if BLE_INCLUDED == TRUE
28
29 #include "gatt_int.h"
30 #include "stack/l2c_api.h"
31 #include "btm_int.h"
32 #include "btm_ble_int.h"
33 #include "osi/allocator.h"
34
35 /* Configuration flags. */
36 #define GATT_L2C_CFG_IND_DONE (1<<0)
37 #define GATT_L2C_CFG_CFM_DONE (1<<1)
38
39 /* minimum GATT MTU size over BR/EDR link
40 */
41 #define GATT_MIN_BR_MTU_SIZE 48
42
43 /********************************************************************************/
44 /* L O C A L F U N C T I O N P R O T O T Y P E S */
45 /********************************************************************************/
46 static void gatt_le_connect_cback (UINT16 chan, BD_ADDR bd_addr, BOOLEAN connected,
47 UINT16 reason, tBT_TRANSPORT transport);
48 static void gatt_le_data_ind (UINT16 chan, BD_ADDR bd_addr, BT_HDR *p_buf);
49 static void gatt_le_cong_cback(BD_ADDR remote_bda, BOOLEAN congest);
50 #if (CLASSIC_BT_GATT_INCLUDED == TRUE)
51 static void gatt_l2cif_connect_ind_cback (BD_ADDR bd_addr, UINT16 l2cap_cid,
52 UINT16 psm, UINT8 l2cap_id);
53 static void gatt_l2cif_connect_cfm_cback (UINT16 l2cap_cid, UINT16 result);
54 static void gatt_l2cif_config_ind_cback (UINT16 l2cap_cid, tL2CAP_CFG_INFO *p_cfg);
55 static void gatt_l2cif_config_cfm_cback (UINT16 l2cap_cid, tL2CAP_CFG_INFO *p_cfg);
56 static void gatt_l2cif_disconnect_ind_cback (UINT16 l2cap_cid, BOOLEAN ack_needed);
57 static void gatt_l2cif_disconnect_cfm_cback (UINT16 l2cap_cid, UINT16 result);
58 static void gatt_l2cif_data_ind_cback (UINT16 l2cap_cid, BT_HDR *p_msg);
59 #endif ///CLASSIC_BT_GATT_INCLUDED == TRUE
60 static void gatt_send_conn_cback (tGATT_TCB *p_tcb);
61 #if (CLASSIC_BT_GATT_INCLUDED == TRUE)
62 static void gatt_l2cif_congest_cback (UINT16 cid, BOOLEAN congested);
63 static const tL2CAP_APPL_INFO dyn_info = {
64 gatt_l2cif_connect_ind_cback,
65 gatt_l2cif_connect_cfm_cback,
66 NULL,
67 gatt_l2cif_config_ind_cback,
68 gatt_l2cif_config_cfm_cback,
69 gatt_l2cif_disconnect_ind_cback,
70 gatt_l2cif_disconnect_cfm_cback,
71 NULL,
72 gatt_l2cif_data_ind_cback,
73 gatt_l2cif_congest_cback,
74 NULL
75 } ;
76 #endif ///CLASSIC_BT_GATT_INCLUDED == TRUE
77
78 #if GATT_DYNAMIC_MEMORY == FALSE
79 tGATT_CB gatt_cb;
80 #else
81 tGATT_CB *gatt_cb_ptr;
82 #endif
83
84 tGATT_DEFAULT gatt_default;
85
86 /*******************************************************************************
87 **
88 ** Function gatt_init
89 **
90 ** Description This function is enable the GATT profile on the device.
91 ** It clears out the control blocks, and registers with L2CAP.
92 **
93 ** Returns void
94 **
95 *******************************************************************************/
gatt_init(void)96 void gatt_init (void)
97 {
98 tL2CAP_FIXED_CHNL_REG fixed_reg;
99
100 #if GATT_DYNAMIC_MEMORY
101 gatt_cb_ptr = (tGATT_CB *)osi_malloc(sizeof(tGATT_CB));
102 #endif /* #if GATT_DYNAMIC_MEMORY */
103 memset (&gatt_cb, 0, sizeof(tGATT_CB));
104 memset (&fixed_reg, 0, sizeof(tL2CAP_FIXED_CHNL_REG));
105
106 gatt_cb.auto_disc = TRUE;
107 gatt_cb.p_clcb_list = list_new(osi_free_func);
108 gatt_cb.p_tcb_list = list_new(osi_free_func);
109 #if defined(GATT_INITIAL_TRACE_LEVEL)
110 gatt_cb.trace_level = GATT_INITIAL_TRACE_LEVEL;
111 #else
112 gatt_cb.trace_level = BT_TRACE_LEVEL_NONE; /* No traces */
113 #endif
114 gatt_cb.def_mtu_size = GATT_DEF_BLE_MTU_SIZE;
115 gatt_cb.sign_op_queue = fixed_queue_new(QUEUE_SIZE_MAX);
116 gatt_cb.srv_chg_clt_q = fixed_queue_new(QUEUE_SIZE_MAX);
117 gatt_cb.pending_new_srv_start_q = fixed_queue_new(QUEUE_SIZE_MAX);
118 gatt_cb.srv_chg_mode = GATTS_SEND_SERVICE_CHANGE_MODE;
119
120 /* First, register fixed L2CAP channel for ATT over BLE */
121 fixed_reg.fixed_chnl_opts.mode = L2CAP_FCR_BASIC_MODE;
122 fixed_reg.fixed_chnl_opts.max_transmit = 0xFF;
123 fixed_reg.fixed_chnl_opts.rtrans_tout = 2000;
124 fixed_reg.fixed_chnl_opts.mon_tout = 12000;
125 fixed_reg.fixed_chnl_opts.mps = 670;
126 fixed_reg.fixed_chnl_opts.tx_win_sz = 1;
127
128 fixed_reg.pL2CA_FixedConn_Cb = gatt_le_connect_cback;
129 fixed_reg.pL2CA_FixedData_Cb = gatt_le_data_ind;
130 fixed_reg.pL2CA_FixedCong_Cb = gatt_le_cong_cback; /* congestion callback */
131 fixed_reg.default_idle_tout = 0xffff; /* 0xffff default idle timeout */
132
133 L2CA_RegisterFixedChannel (L2CAP_ATT_CID, &fixed_reg);
134
135 #if (CLASSIC_BT_GATT_INCLUDED == TRUE)
136 /* Now, register with L2CAP for ATT PSM over BR/EDR */
137 if (!L2CA_Register (BT_PSM_ATT, (tL2CAP_APPL_INFO *) &dyn_info)) {
138 GATT_TRACE_ERROR ("ATT Dynamic Registration failed");
139 }
140 #endif ///CLASSIC_BT_GATT_INCLUDED == TRUE
141 BTM_SetSecurityLevel(TRUE, "", BTM_SEC_SERVICE_ATT, BTM_SEC_NONE, BT_PSM_ATT, 0, 0);
142 BTM_SetSecurityLevel(FALSE, "", BTM_SEC_SERVICE_ATT, BTM_SEC_NONE, BT_PSM_ATT, 0, 0);
143
144 gatt_cb.hdl_cfg.gatt_start_hdl = GATT_GATT_START_HANDLE;
145 gatt_cb.hdl_cfg.gap_start_hdl = GATT_GAP_START_HANDLE;
146 gatt_cb.hdl_cfg.app_start_hdl = GATT_APP_START_HANDLE;
147 #if (GATTS_INCLUDED == TRUE)
148 gatt_profile_db_init();
149 #endif ///GATTS_INCLUDED == TRUE
150 //init local MTU size
151 gatt_default.local_mtu = GATT_MAX_MTU_SIZE;
152 }
153
154
155 /*******************************************************************************
156 **
157 ** Function gatt_free
158 **
159 ** Description This function frees resources used by the GATT profile.
160 **
161 ** Returns void
162 **
163 *******************************************************************************/
164 #if (GATT_INCLUDED == TRUE)
gatt_free(void)165 void gatt_free(void)
166 {
167 GATT_TRACE_DEBUG("gatt_free()");
168 fixed_queue_free(gatt_cb.sign_op_queue, NULL);
169 gatt_cb.sign_op_queue = NULL;
170 fixed_queue_free(gatt_cb.srv_chg_clt_q, NULL);
171 gatt_cb.srv_chg_clt_q = NULL;
172 fixed_queue_free(gatt_cb.pending_new_srv_start_q, NULL);
173 gatt_cb.pending_new_srv_start_q = NULL;
174
175 list_node_t *p_node = NULL;
176 tGATT_TCB *p_tcb = NULL;
177 for(p_node = list_begin(gatt_cb.p_tcb_list); p_node; p_node = list_next(p_node)) {
178 p_tcb = list_node(p_node);
179 fixed_queue_free(p_tcb->pending_enc_clcb, NULL);
180 p_tcb->pending_enc_clcb = NULL;
181
182 fixed_queue_free(p_tcb->pending_ind_q, NULL);
183 p_tcb->pending_ind_q = NULL;
184
185 btu_free_timer(&p_tcb->conf_timer_ent);
186 memset(&p_tcb->conf_timer_ent, 0, sizeof(TIMER_LIST_ENT));
187
188 btu_free_timer(&p_tcb->ind_ack_timer_ent);
189 memset(&p_tcb->ind_ack_timer_ent, 0, sizeof(TIMER_LIST_ENT));
190
191 #if (GATTS_INCLUDED == TRUE)
192 fixed_queue_free(p_tcb->sr_cmd.multi_rsp_q, NULL);
193 p_tcb->sr_cmd.multi_rsp_q = NULL;
194 #endif /* #if (GATTS_INCLUDED == TRUE) */
195 }
196 list_free(gatt_cb.p_tcb_list);
197 list_free(gatt_cb.p_clcb_list);
198
199 #if (GATTS_INCLUDED == TRUE)
200 for (int i = 0; i < GATT_MAX_SR_PROFILES; i++) {
201 gatt_remove_an_item_from_list(&gatt_cb.hdl_list_info, &gatt_cb.hdl_list[i]);
202 gatt_free_attr_value_buffer(&gatt_cb.hdl_list[i]);
203 gatt_free_hdl_buffer(&gatt_cb.hdl_list[i]);
204 }
205 #endif /* #if (GATTS_INCLUDED == TRUE) */
206 #if GATT_DYNAMIC_MEMORY
207 FREE_AND_RESET(gatt_cb_ptr);
208 #endif /* #if GATT_DYNAMIC_MEMORY */
209 }
210 #endif ///GATTS_INCLUDED == TRUE
211
212 /*******************************************************************************
213 **
214 ** Function gatt_connect
215 **
216 ** Description This function is called to initiate a connection to a peer device.
217 **
218 ** Parameter rem_bda: remote device address to connect to.
219 ** bd_addr_type: emote device address type.
220 ** Returns TRUE if connection is started, otherwise return FALSE.
221 **
222 *******************************************************************************/
gatt_connect(BD_ADDR rem_bda,tBLE_ADDR_TYPE bd_addr_type,tGATT_TCB * p_tcb,tBT_TRANSPORT transport,BOOLEAN is_aux)223 BOOLEAN gatt_connect (BD_ADDR rem_bda, tBLE_ADDR_TYPE bd_addr_type, tGATT_TCB *p_tcb, tBT_TRANSPORT transport, BOOLEAN is_aux)
224 {
225 BOOLEAN gatt_ret = FALSE;
226
227 if (gatt_get_ch_state(p_tcb) != GATT_CH_OPEN) {
228 gatt_set_ch_state(p_tcb, GATT_CH_CONN);
229 }
230
231 if (transport == BT_TRANSPORT_LE) {
232 p_tcb->att_lcid = L2CAP_ATT_CID;
233 gatt_ret = L2CA_ConnectFixedChnl (L2CAP_ATT_CID, rem_bda, bd_addr_type, is_aux);
234 #if (CLASSIC_BT_GATT_INCLUDED == TRUE)
235 } else {
236 if ((p_tcb->att_lcid = L2CA_ConnectReq(BT_PSM_ATT, rem_bda)) != 0) {
237 gatt_ret = TRUE;
238 }
239 #endif ///CLASSIC_BT_GATT_INCLUDED == TRUE
240
241 }
242
243 return gatt_ret;
244 }
245
246 /*******************************************************************************
247 **
248 ** Function gatt_disconnect
249 **
250 ** Description This function is called to disconnect to an ATT device.
251 **
252 ** Parameter p_tcb: pointer to the TCB to disconnect.
253 **
254 ** Returns TRUE: if connection found and to be disconnected; otherwise
255 ** return FALSE.
256 **
257 *******************************************************************************/
gatt_disconnect(tGATT_TCB * p_tcb)258 BOOLEAN gatt_disconnect (tGATT_TCB *p_tcb)
259 {
260 BOOLEAN ret = FALSE;
261 tGATT_CH_STATE ch_state;
262 GATT_TRACE_DEBUG ("gatt_disconnect ");
263
264 if (p_tcb != NULL) {
265 ret = TRUE;
266 if ( (ch_state = gatt_get_ch_state(p_tcb)) != GATT_CH_CLOSING ) {
267 if (p_tcb->att_lcid == L2CAP_ATT_CID) {
268 if (ch_state == GATT_CH_OPEN) {
269 /* only LCB exist between remote device and local */
270 ret = L2CA_RemoveFixedChnl (L2CAP_ATT_CID, p_tcb->peer_bda);
271 } else {
272 gatt_set_ch_state(p_tcb, GATT_CH_CLOSING);
273 ret = L2CA_CancelBleConnectReq (p_tcb->peer_bda);
274 }
275 #if (CLASSIC_BT_GATT_INCLUDED == TRUE)
276 } else {
277 ret = L2CA_DisconnectReq(p_tcb->att_lcid);
278 #endif ///CLASSIC_BT_GATT_INCLUDED == TRUE
279 }
280 } else {
281 GATT_TRACE_DEBUG ("gatt_disconnect already in closing state");
282 }
283 }
284
285 return ret;
286 }
287
288 /*******************************************************************************
289 **
290 ** Function gatt_update_app_hold_link_status
291 **
292 ** Description Update the application use link status
293 **
294 ** Returns void.
295 **
296 *******************************************************************************/
gatt_update_app_hold_link_status(tGATT_IF gatt_if,tGATT_TCB * p_tcb,BOOLEAN is_add)297 void gatt_update_app_hold_link_status (tGATT_IF gatt_if, tGATT_TCB *p_tcb, BOOLEAN is_add)
298 {
299 UINT8 i;
300 BOOLEAN found = FALSE;
301
302 if (p_tcb == NULL) {
303 GATT_TRACE_ERROR("gatt_update_app_hold_link_status p_tcb=NULL");
304 return;
305 }
306
307
308 for (i = 0; i < GATT_MAX_APPS; i++) {
309 if (p_tcb->app_hold_link[i] == gatt_if) {
310 found = TRUE;
311 if (!is_add) {
312 p_tcb->app_hold_link[i] = 0;
313 break;
314 }
315 }
316 }
317
318 if (!found && is_add) {
319 for (i = 0; i < GATT_MAX_APPS; i++) {
320 if (p_tcb->app_hold_link[i] == 0) {
321 p_tcb->app_hold_link[i] = gatt_if;
322 found = TRUE;
323 break;
324 }
325 }
326 }
327
328 GATT_TRACE_DEBUG("gatt_update_app_hold_link_status found=%d[1-found] idx=%d gatt_if=%d is_add=%d", found, i, gatt_if, is_add);
329
330 }
331
332 /*******************************************************************************
333 **
334 ** Function gatt_update_app_use_link_flag
335 **
336 ** Description Update the application use link flag and optional to check the acl link
337 ** if the link is up then set the idle time out accordingly
338 **
339 ** Returns void.
340 **
341 *******************************************************************************/
gatt_update_app_use_link_flag(tGATT_IF gatt_if,tGATT_TCB * p_tcb,BOOLEAN is_add,BOOLEAN check_acl_link)342 void gatt_update_app_use_link_flag (tGATT_IF gatt_if, tGATT_TCB *p_tcb, BOOLEAN is_add, BOOLEAN check_acl_link)
343 {
344 GATT_TRACE_DEBUG("gatt_update_app_use_link_flag is_add=%d chk_link=%d",
345 is_add, check_acl_link);
346
347 gatt_update_app_hold_link_status(gatt_if, p_tcb, is_add);
348
349 if (check_acl_link &&
350 p_tcb &&
351 p_tcb->att_lcid == L2CAP_ATT_CID && /* only update link idle timer for fixed channel */
352 (BTM_GetHCIConnHandle(p_tcb->peer_bda, p_tcb->transport) != GATT_INVALID_ACL_HANDLE)) {
353 if (is_add) {
354 GATT_TRACE_DEBUG("GATT disables link idle timer");
355 /* acl link is connected disable the idle timeout */
356 GATT_SetIdleTimeout(p_tcb->peer_bda, GATT_LINK_NO_IDLE_TIMEOUT, p_tcb->transport);
357 } else {
358 if (!gatt_num_apps_hold_link(p_tcb)) {
359 /* acl link is connected but no application needs to use the link
360 so set the timeout value to GATT_LINK_IDLE_TIMEOUT_WHEN_NO_APP seconds */
361 GATT_TRACE_DEBUG("GATT starts link idle timer =%d sec", GATT_LINK_IDLE_TIMEOUT_WHEN_NO_APP);
362 GATT_SetIdleTimeout(p_tcb->peer_bda, GATT_LINK_IDLE_TIMEOUT_WHEN_NO_APP, p_tcb->transport);
363 }
364
365 }
366 }
367 }
368
369 /*******************************************************************************
370 **
371 ** Function gatt_act_connect
372 **
373 ** Description GATT connection initiation.
374 **
375 ** Returns void.
376 **
377 *******************************************************************************/
gatt_act_connect(tGATT_REG * p_reg,BD_ADDR bd_addr,tBLE_ADDR_TYPE bd_addr_type,tBT_TRANSPORT transport,BOOLEAN is_aux)378 BOOLEAN gatt_act_connect (tGATT_REG *p_reg, BD_ADDR bd_addr,
379 tBLE_ADDR_TYPE bd_addr_type, tBT_TRANSPORT transport, BOOLEAN is_aux)
380 {
381 BOOLEAN ret = FALSE;
382 tGATT_TCB *p_tcb;
383 UINT8 st;
384
385 if ((p_tcb = gatt_find_tcb_by_addr(bd_addr, transport)) != NULL) {
386 ret = TRUE;
387 st = gatt_get_ch_state(p_tcb);
388
389 /* before link down, another app try to open a GATT connection */
390 if (st == GATT_CH_OPEN && gatt_num_apps_hold_link(p_tcb) == 0 &&
391 transport == BT_TRANSPORT_LE ) {
392 if (!gatt_connect(bd_addr, bd_addr_type, p_tcb, transport, is_aux)) {
393 ret = FALSE;
394 }
395 } else if (st == GATT_CH_CLOSING) {
396 /* need to complete the closing first */
397 ret = FALSE;
398 } else {
399 GATT_TRACE_WARNING("gatt_connect wrong state %d", st);
400 }
401 } else {
402 if ((p_tcb = gatt_allocate_tcb_by_bdaddr(bd_addr, transport)) != NULL) {
403 if (!gatt_connect(bd_addr, bd_addr_type, p_tcb, transport, is_aux)) {
404 GATT_TRACE_ERROR("gatt_connect failed");
405
406 // code enter here if create connection failed. if disconnect after connection, code will not enter here
407
408 // p_tcb, p_tcb->pending_enc_clcb, and p_tcb->pending_ind_q have been freed in gatt_cleanup_upon_disc(),
409 // but here p_tcb is get from gatt_allocate_tcb_by_bdaddr(), is too old, so we get p_tcb again
410 p_tcb = gatt_find_tcb_by_addr(bd_addr, transport);
411 if(p_tcb != NULL) {
412 if(p_tcb->pending_enc_clcb != NULL) {
413 fixed_queue_free(p_tcb->pending_enc_clcb, NULL);
414 }
415 if(p_tcb->pending_ind_q != NULL) {
416 fixed_queue_free(p_tcb->pending_ind_q, NULL);
417 }
418 gatt_tcb_free(p_tcb);
419 }
420
421 } else {
422 ret = TRUE;
423 }
424 } else {
425 ret = 0;
426 GATT_TRACE_ERROR("Max TCB for gatt_if [%d] reached.", p_reg->gatt_if);
427 }
428 }
429
430 if (ret) {
431 gatt_update_app_use_link_flag(p_reg->gatt_if, p_tcb, TRUE, FALSE);
432 }
433
434 return ret;
435 }
436
437 /*******************************************************************************
438 **
439 ** Function gatt_le_connect_cback
440 **
441 ** Description This callback function is called by L2CAP to indicate that
442 ** the ATT fixed channel for LE is
443 ** connected (conn = TRUE)/disconnected (conn = FALSE).
444 **
445 *******************************************************************************/
gatt_le_connect_cback(UINT16 chan,BD_ADDR bd_addr,BOOLEAN connected,UINT16 reason,tBT_TRANSPORT transport)446 static void gatt_le_connect_cback (UINT16 chan, BD_ADDR bd_addr, BOOLEAN connected,
447 UINT16 reason, tBT_TRANSPORT transport)
448 {
449
450 tGATT_TCB *p_tcb = gatt_find_tcb_by_addr(bd_addr, transport);
451 BOOLEAN check_srv_chg = FALSE;
452 tGATTS_SRV_CHG *p_srv_chg_clt = NULL;
453
454 /* ignore all fixed channel connect/disconnect on BR/EDR link for GATT */
455 if (transport == BT_TRANSPORT_BR_EDR) {
456 return;
457 }
458
459 GATT_TRACE_DEBUG ("GATT ATT protocol channel with BDA: %08x%04x is %s",
460 (bd_addr[0] << 24) + (bd_addr[1] << 16) + (bd_addr[2] << 8) + bd_addr[3],
461 (bd_addr[4] << 8) + bd_addr[5], (connected) ? "connected" : "disconnected");
462
463 if ((p_srv_chg_clt = gatt_is_bda_in_the_srv_chg_clt_list(bd_addr)) != NULL) {
464 check_srv_chg = TRUE;
465 } else {
466 if (btm_sec_is_a_bonded_dev(bd_addr)) {
467 gatt_add_a_bonded_dev_for_srv_chg(bd_addr);
468 }
469 }
470
471 if (connected) {
472 /* do we have a channel initiating a connection? */
473 if (p_tcb) {
474 /* we are initiating connection */
475 if ( gatt_get_ch_state(p_tcb) == GATT_CH_CONN) {
476 /* send callback */
477 gatt_set_ch_state(p_tcb, GATT_CH_OPEN);
478 p_tcb->payload_size = GATT_DEF_BLE_MTU_SIZE;
479
480 gatt_send_conn_cback(p_tcb);
481 }
482 if (check_srv_chg) {
483 #if (GATTS_INCLUDED == TRUE)
484 gatt_chk_srv_chg (p_srv_chg_clt);
485 #endif ///GATTS_INCLUDED == TRUE
486 }
487 }
488 /* this is incoming connection or background connection callback */
489
490 else {
491 if ((p_tcb = gatt_allocate_tcb_by_bdaddr(bd_addr, BT_TRANSPORT_LE)) != NULL) {
492 p_tcb->att_lcid = L2CAP_ATT_CID;
493
494 gatt_set_ch_state(p_tcb, GATT_CH_OPEN);
495
496 p_tcb->payload_size = GATT_DEF_BLE_MTU_SIZE;
497
498 gatt_send_conn_cback (p_tcb);
499 if (check_srv_chg) {
500 #if (GATTS_INCLUDED == TRUE)
501 gatt_chk_srv_chg (p_srv_chg_clt);
502 #endif ///GATTS_INCLUDED == TRUE
503 }
504 } else {
505 GATT_TRACE_ERROR("CCB max out, no rsources");
506 }
507 }
508 } else {
509 gatt_cleanup_upon_disc(bd_addr, reason, transport);
510 GATT_TRACE_DEBUG ("ATT disconnected");
511 }
512 }
513
514 /*******************************************************************************
515 **
516 ** Function gatt_channel_congestion
517 **
518 ** Description This function is called to process the congestion callback
519 ** from lcb
520 **
521 ** Returns void
522 **
523 *******************************************************************************/
gatt_channel_congestion(tGATT_TCB * p_tcb,BOOLEAN congested)524 static void gatt_channel_congestion(tGATT_TCB *p_tcb, BOOLEAN congested)
525 {
526 UINT8 i = 0;
527 tGATT_REG *p_reg = NULL;
528 UINT16 conn_id;
529 #if (GATTC_INCLUDED == TRUE)
530 /* if uncongested, check to see if there is any more pending data */
531 if (p_tcb != NULL && congested == FALSE) {
532 gatt_cl_send_next_cmd_inq(p_tcb);
533 }
534 #endif ///GATTC_INCLUDED == TRUE
535 /* notifying all applications for the connection up event */
536 for (i = 0, p_reg = gatt_cb.cl_rcb ; i < GATT_MAX_APPS; i++, p_reg++) {
537 if (p_reg->in_use) {
538 if (p_reg->app_cb.p_congestion_cb) {
539 conn_id = GATT_CREATE_CONN_ID(p_tcb->tcb_idx, p_reg->gatt_if);
540 (*p_reg->app_cb.p_congestion_cb)(conn_id, congested);
541 }
542 }
543 }
544 }
545
546 /*******************************************************************************
547 **
548 ** Function gatt_le_cong_cback
549 **
550 ** Description This function is called when GATT fixed channel is congested
551 ** or uncongested.
552 **
553 ** Returns void
554 **
555 *******************************************************************************/
gatt_le_cong_cback(BD_ADDR remote_bda,BOOLEAN congested)556 static void gatt_le_cong_cback(BD_ADDR remote_bda, BOOLEAN congested)
557 {
558 tGATT_TCB *p_tcb = gatt_find_tcb_by_addr(remote_bda, BT_TRANSPORT_LE);
559
560 /* if uncongested, check to see if there is any more pending data */
561 if (p_tcb != NULL) {
562 gatt_channel_congestion(p_tcb, congested);
563 }
564 }
565
566 /*******************************************************************************
567 **
568 ** Function gatt_le_data_ind
569 **
570 ** Description This function is called when data is received from L2CAP.
571 ** if we are the originator of the connection, we are the ATT
572 ** client, and the received message is queued up for the client.
573 **
574 ** If we are the destination of the connection, we are the ATT
575 ** server, so the message is passed to the server processing
576 ** function.
577 **
578 ** Returns void
579 **
580 *******************************************************************************/
gatt_le_data_ind(UINT16 chan,BD_ADDR bd_addr,BT_HDR * p_buf)581 static void gatt_le_data_ind (UINT16 chan, BD_ADDR bd_addr, BT_HDR *p_buf)
582 {
583 tGATT_TCB *p_tcb;
584
585 /* Find CCB based on bd addr */
586 if ((p_tcb = gatt_find_tcb_by_addr (bd_addr, BT_TRANSPORT_LE)) != NULL &&
587 gatt_get_ch_state(p_tcb) >= GATT_CH_OPEN) {
588 gatt_data_process(p_tcb, p_buf);
589 } else {
590 osi_free (p_buf);
591
592 if (p_tcb != NULL) {
593 GATT_TRACE_WARNING ("ATT - Ignored L2CAP data while in state: %d\n",
594 gatt_get_ch_state(p_tcb));
595 }
596 }
597 }
598
599 /*******************************************************************************
600 **
601 ** Function gatt_l2cif_connect_ind
602 **
603 ** Description This function handles an inbound connection indication
604 ** from L2CAP. This is the case where we are acting as a
605 ** server.
606 **
607 ** Returns void
608 **
609 *******************************************************************************/
610 #if (CLASSIC_BT_GATT_INCLUDED == TRUE)
gatt_l2cif_connect_ind_cback(BD_ADDR bd_addr,UINT16 lcid,UINT16 psm,UINT8 id)611 static void gatt_l2cif_connect_ind_cback (BD_ADDR bd_addr, UINT16 lcid, UINT16 psm, UINT8 id)
612 {
613 /* do we already have a control channel for this peer? */
614 UINT8 result = L2CAP_CONN_OK;
615 tL2CAP_CFG_INFO cfg;
616 tGATT_TCB *p_tcb = gatt_find_tcb_by_addr(bd_addr, BT_TRANSPORT_BR_EDR);
617 UNUSED(psm);
618
619 GATT_TRACE_ERROR("Connection indication cid = %d", lcid);
620 /* new connection ? */
621 if (p_tcb == NULL) {
622 /* allocate tcb */
623 if ((p_tcb = gatt_allocate_tcb_by_bdaddr(bd_addr, BT_TRANSPORT_BR_EDR)) == NULL) {
624 /* no tcb available, reject L2CAP connection */
625 result = L2CAP_CONN_NO_RESOURCES;
626 } else {
627 p_tcb->att_lcid = lcid;
628 }
629
630 } else { /* existing connection , reject it */
631 result = L2CAP_CONN_NO_RESOURCES;
632 }
633
634 /* Send L2CAP connect rsp */
635 L2CA_ConnectRsp(bd_addr, id, lcid, result, 0);
636
637 /* if result ok, proceed with connection */
638 if (result == L2CAP_CONN_OK) {
639 /* transition to configuration state */
640 gatt_set_ch_state(p_tcb, GATT_CH_CFG);
641
642 /* Send L2CAP config req */
643 memset(&cfg, 0, sizeof(tL2CAP_CFG_INFO));
644 cfg.mtu_present = TRUE;
645 cfg.mtu = gatt_default.local_mtu;
646
647 L2CA_ConfigReq(lcid, &cfg);
648 }
649
650 }
651
652 /*******************************************************************************
653 **
654 ** Function gatt_l2c_connect_cfm_cback
655 **
656 ** Description This is the L2CAP connect confirm callback function.
657 **
658 **
659 ** Returns void
660 **
661 *******************************************************************************/
gatt_l2cif_connect_cfm_cback(UINT16 lcid,UINT16 result)662 static void gatt_l2cif_connect_cfm_cback(UINT16 lcid, UINT16 result)
663 {
664 tGATT_TCB *p_tcb;
665 tL2CAP_CFG_INFO cfg;
666
667 /* look up clcb for this channel */
668 if ((p_tcb = gatt_find_tcb_by_cid(lcid)) != NULL) {
669 GATT_TRACE_DEBUG("gatt_l2c_connect_cfm_cback result: %d ch_state: %d, lcid:0x%x", result, gatt_get_ch_state(p_tcb), p_tcb->att_lcid);
670
671 /* if in correct state */
672 if (gatt_get_ch_state(p_tcb) == GATT_CH_CONN) {
673 /* if result successful */
674 if (result == L2CAP_CONN_OK) {
675 /* set channel state */
676 gatt_set_ch_state(p_tcb, GATT_CH_CFG);
677
678 /* Send L2CAP config req */
679 memset(&cfg, 0, sizeof(tL2CAP_CFG_INFO));
680 cfg.mtu_present = TRUE;
681 cfg.mtu = gatt_default.local_mtu;
682 L2CA_ConfigReq(lcid, &cfg);
683 }
684 /* else initiating connection failure */
685 else {
686 gatt_cleanup_upon_disc(p_tcb->peer_bda, result, GATT_TRANSPORT_BR_EDR);
687 }
688 } else { /* wrong state, disconnect it */
689 if (result == L2CAP_CONN_OK) {
690 /* just in case the peer also accepts our connection - Send L2CAP disconnect req */
691 L2CA_DisconnectReq(lcid);
692 }
693 }
694 }
695 }
696
697 /*******************************************************************************
698 **
699 ** Function gatt_l2cif_config_cfm_cback
700 **
701 ** Description This is the L2CAP config confirm callback function.
702 **
703 **
704 ** Returns void
705 **
706 *******************************************************************************/
gatt_l2cif_config_cfm_cback(UINT16 lcid,tL2CAP_CFG_INFO * p_cfg)707 void gatt_l2cif_config_cfm_cback(UINT16 lcid, tL2CAP_CFG_INFO *p_cfg)
708 {
709 tGATT_TCB *p_tcb;
710 tGATTS_SRV_CHG *p_srv_chg_clt = NULL;
711
712 /* look up clcb for this channel */
713 if ((p_tcb = gatt_find_tcb_by_cid(lcid)) != NULL) {
714 /* if in correct state */
715 if ( gatt_get_ch_state(p_tcb) == GATT_CH_CFG) {
716 /* if result successful */
717 if (p_cfg->result == L2CAP_CFG_OK) {
718 /* update flags */
719 p_tcb->ch_flags |= GATT_L2C_CFG_CFM_DONE;
720
721 /* if configuration complete */
722 if (p_tcb->ch_flags & GATT_L2C_CFG_IND_DONE) {
723 gatt_set_ch_state(p_tcb, GATT_CH_OPEN);
724
725 if ((p_srv_chg_clt = gatt_is_bda_in_the_srv_chg_clt_list(p_tcb->peer_bda)) != NULL) {
726 #if (GATTS_INCLUDED == TRUE)
727 gatt_chk_srv_chg(p_srv_chg_clt);
728 #endif ///GATTS_INCLUDED == TRUE
729 } else {
730 if (btm_sec_is_a_bonded_dev(p_tcb->peer_bda)) {
731 gatt_add_a_bonded_dev_for_srv_chg(p_tcb->peer_bda);
732 }
733 }
734
735 /* send callback */
736 gatt_send_conn_cback(p_tcb);
737 }
738 }
739 /* else failure */
740 else {
741 /* Send L2CAP disconnect req */
742 L2CA_DisconnectReq(lcid);
743 }
744 }
745 }
746 }
747
748 /*******************************************************************************
749 **
750 ** Function gatt_l2cif_config_ind_cback
751 **
752 ** Description This is the L2CAP config indication callback function.
753 **
754 **
755 ** Returns void
756 **
757 *******************************************************************************/
gatt_l2cif_config_ind_cback(UINT16 lcid,tL2CAP_CFG_INFO * p_cfg)758 void gatt_l2cif_config_ind_cback(UINT16 lcid, tL2CAP_CFG_INFO *p_cfg)
759 {
760 tGATT_TCB *p_tcb;
761 tGATTS_SRV_CHG *p_srv_chg_clt = NULL;
762 /* look up clcb for this channel */
763 if ((p_tcb = gatt_find_tcb_by_cid(lcid)) != NULL) {
764 /* GATT uses the smaller of our MTU and peer's MTU */
765 if ( p_cfg->mtu_present &&
766 (p_cfg->mtu >= GATT_MIN_BR_MTU_SIZE && p_cfg->mtu < L2CAP_DEFAULT_MTU)) {
767 p_tcb->payload_size = p_cfg->mtu;
768 } else {
769 p_tcb->payload_size = L2CAP_DEFAULT_MTU;
770 }
771
772 /* send L2CAP configure response */
773 memset(p_cfg, 0, sizeof(tL2CAP_CFG_INFO));
774 p_cfg->result = L2CAP_CFG_OK;
775 L2CA_ConfigRsp(lcid, p_cfg);
776
777 /* if first config ind */
778 if ((p_tcb->ch_flags & GATT_L2C_CFG_IND_DONE) == 0) {
779 /* update flags */
780 p_tcb->ch_flags |= GATT_L2C_CFG_IND_DONE;
781
782 /* if configuration complete */
783 if (p_tcb->ch_flags & GATT_L2C_CFG_CFM_DONE) {
784 gatt_set_ch_state(p_tcb, GATT_CH_OPEN);
785 if ((p_srv_chg_clt = gatt_is_bda_in_the_srv_chg_clt_list(p_tcb->peer_bda)) != NULL) {
786 #if (GATTS_INCLUDED == TRUE)
787 gatt_chk_srv_chg(p_srv_chg_clt);
788 #endif ///GATTS_INCLUDED == TRUE
789 } else {
790 if (btm_sec_is_a_bonded_dev(p_tcb->peer_bda)) {
791 gatt_add_a_bonded_dev_for_srv_chg(p_tcb->peer_bda);
792 }
793 }
794
795 /* send callback */
796 gatt_send_conn_cback(p_tcb);
797 }
798 }
799 }
800 }
801
802 /*******************************************************************************
803 **
804 ** Function gatt_l2cif_disconnect_ind_cback
805 **
806 ** Description This is the L2CAP disconnect indication callback function.
807 **
808 **
809 ** Returns void
810 **
811 *******************************************************************************/
gatt_l2cif_disconnect_ind_cback(UINT16 lcid,BOOLEAN ack_needed)812 void gatt_l2cif_disconnect_ind_cback(UINT16 lcid, BOOLEAN ack_needed)
813 {
814 tGATT_TCB *p_tcb;
815 UINT16 reason;
816
817 /* look up clcb for this channel */
818 if ((p_tcb = gatt_find_tcb_by_cid(lcid)) != NULL) {
819 if (ack_needed) {
820 /* send L2CAP disconnect response */
821 L2CA_DisconnectRsp(lcid);
822 }
823 if (gatt_is_bda_in_the_srv_chg_clt_list(p_tcb->peer_bda) == NULL) {
824 if (btm_sec_is_a_bonded_dev(p_tcb->peer_bda)) {
825 gatt_add_a_bonded_dev_for_srv_chg(p_tcb->peer_bda);
826 }
827 }
828 /* if ACL link is still up, no reason is logged, l2cap is disconnect from peer */
829 if ((reason = L2CA_GetDisconnectReason(p_tcb->peer_bda, p_tcb->transport)) == 0) {
830 reason = GATT_CONN_TERMINATE_PEER_USER;
831 }
832
833 /* send disconnect callback */
834 gatt_cleanup_upon_disc(p_tcb->peer_bda, reason, GATT_TRANSPORT_BR_EDR);
835 }
836 }
837
838 /*******************************************************************************
839 **
840 ** Function gatt_l2cif_disconnect_cfm_cback
841 **
842 ** Description This is the L2CAP disconnect confirm callback function.
843 **
844 **
845 ** Returns void
846 **
847 *******************************************************************************/
gatt_l2cif_disconnect_cfm_cback(UINT16 lcid,UINT16 result)848 static void gatt_l2cif_disconnect_cfm_cback(UINT16 lcid, UINT16 result)
849 {
850 tGATT_TCB *p_tcb;
851 UINT16 reason;
852 UNUSED(result);
853
854 /* look up clcb for this channel */
855 if ((p_tcb = gatt_find_tcb_by_cid(lcid)) != NULL) {
856 /* If the device is not in the service changed client list, add it... */
857 if (gatt_is_bda_in_the_srv_chg_clt_list(p_tcb->peer_bda) == NULL) {
858 if (btm_sec_is_a_bonded_dev(p_tcb->peer_bda)) {
859 gatt_add_a_bonded_dev_for_srv_chg(p_tcb->peer_bda);
860 }
861 }
862
863 /* send disconnect callback */
864 /* if ACL link is still up, no reason is logged, l2cap is disconnect from peer */
865 if ((reason = L2CA_GetDisconnectReason(p_tcb->peer_bda, p_tcb->transport)) == 0) {
866 reason = GATT_CONN_TERMINATE_LOCAL_HOST;
867 }
868
869 gatt_cleanup_upon_disc(p_tcb->peer_bda, reason, GATT_TRANSPORT_BR_EDR);
870 }
871 }
872
873 /*******************************************************************************
874 **
875 ** Function gatt_l2cif_data_ind_cback
876 **
877 ** Description This is the L2CAP data indication callback function.
878 **
879 **
880 ** Returns void
881 **
882 *******************************************************************************/
gatt_l2cif_data_ind_cback(UINT16 lcid,BT_HDR * p_buf)883 static void gatt_l2cif_data_ind_cback(UINT16 lcid, BT_HDR *p_buf)
884 {
885 tGATT_TCB *p_tcb;
886
887 /* look up clcb for this channel */
888 if ((p_tcb = gatt_find_tcb_by_cid(lcid)) != NULL &&
889 gatt_get_ch_state(p_tcb) == GATT_CH_OPEN) {
890 /* process the data */
891 gatt_data_process(p_tcb, p_buf);
892 } else { /* prevent buffer leak */
893 osi_free(p_buf);
894 }
895
896 }
897
898 /*******************************************************************************
899 **
900 ** Function gatt_l2cif_congest_cback
901 **
902 ** Description L2CAP congestion callback
903 **
904 ** Returns void
905 **
906 *******************************************************************************/
gatt_l2cif_congest_cback(UINT16 lcid,BOOLEAN congested)907 static void gatt_l2cif_congest_cback (UINT16 lcid, BOOLEAN congested)
908 {
909 tGATT_TCB *p_tcb = gatt_find_tcb_by_cid(lcid);
910
911 if (p_tcb != NULL) {
912 gatt_channel_congestion(p_tcb, congested);
913 }
914
915 }
916 #endif ///CLASSIC_BT_GATT_INCLUDED == TRUE
917
918 /*******************************************************************************
919 **
920 ** Function gatt_send_conn_cback
921 **
922 ** Description Callback used to notify layer above about a connection.
923 **
924 **
925 ** Returns void
926 **
927 *******************************************************************************/
gatt_send_conn_cback(tGATT_TCB * p_tcb)928 static void gatt_send_conn_cback(tGATT_TCB *p_tcb)
929 {
930 UINT8 i;
931 tGATT_REG *p_reg;
932 tGATT_BG_CONN_DEV *p_bg_dev = NULL;
933 UINT16 conn_id;
934
935 p_bg_dev = gatt_find_bg_dev(p_tcb->peer_bda);
936
937 /* notifying all applications for the connection up event */
938 for (i = 0, p_reg = gatt_cb.cl_rcb ; i < GATT_MAX_APPS; i++, p_reg++) {
939 if (p_reg->in_use) {
940 if (p_bg_dev && gatt_is_bg_dev_for_app(p_bg_dev, p_reg->gatt_if)) {
941 gatt_update_app_use_link_flag(p_reg->gatt_if, p_tcb, TRUE, TRUE);
942 }
943
944 if (p_reg->app_cb.p_conn_cb) {
945 conn_id = GATT_CREATE_CONN_ID(p_tcb->tcb_idx, p_reg->gatt_if);
946 (*p_reg->app_cb.p_conn_cb)(p_reg->gatt_if, p_tcb->peer_bda, conn_id,
947 TRUE, 0, p_tcb->transport);
948 }
949 }
950 }
951
952
953 if (gatt_num_apps_hold_link(p_tcb) && p_tcb->att_lcid == L2CAP_ATT_CID ) {
954 /* disable idle timeout if one or more clients are holding the link disable the idle timer */
955 GATT_SetIdleTimeout(p_tcb->peer_bda, GATT_LINK_NO_IDLE_TIMEOUT, p_tcb->transport);
956 }
957 }
958
959 /*******************************************************************************
960 **
961 ** Function gatt_le_data_ind
962 **
963 ** Description This function is called when data is received from L2CAP.
964 ** if we are the originator of the connection, we are the ATT
965 ** client, and the received message is queued up for the client.
966 **
967 ** If we are the destination of the connection, we are the ATT
968 ** server, so the message is passed to the server processing
969 ** function.
970 **
971 ** Returns void
972 **
973 *******************************************************************************/
gatt_data_process(tGATT_TCB * p_tcb,BT_HDR * p_buf)974 void gatt_data_process (tGATT_TCB *p_tcb, BT_HDR *p_buf)
975 {
976 UINT8 *p = (UINT8 *)(p_buf + 1) + p_buf->offset;
977 UINT8 op_code, pseudo_op_code;
978 #if (GATTS_INCLUDED == TRUE) || (GATTC_INCLUDED == TRUE)
979 UINT16 msg_len;
980 #endif ///(GATTS_INCLUDED == TRUE) || (GATTC_INCLUDED == TRUE)
981
982
983 if (p_buf->len > 0) {
984 #if (GATTS_INCLUDED == TRUE) || (GATTC_INCLUDED == TRUE)
985 msg_len = p_buf->len - 1;
986 #endif ///(GATTS_INCLUDED == TRUE) || (GATTC_INCLUDED == TRUE)
987 STREAM_TO_UINT8(op_code, p);
988
989 /* remove the two MSBs associated with sign write and write cmd */
990 pseudo_op_code = op_code & (~GATT_WRITE_CMD_MASK);
991
992 if (pseudo_op_code < GATT_OP_CODE_MAX) {
993 if (op_code == GATT_SIGN_CMD_WRITE) {
994 #if (SMP_INCLUDED == TRUE)
995 gatt_verify_signature(p_tcb, p_buf);
996 #endif ///SMP_INCLUDED == TRUE
997 } else {
998 /* message from client */
999 if ((op_code % 2) == 0) {
1000 #if (GATTS_INCLUDED == TRUE)
1001 gatt_server_handle_client_req (p_tcb, op_code, msg_len, p);
1002 #endif ///GATTS_INCLUDED == TRUE
1003 } else {
1004 #if (GATTC_INCLUDED == TRUE)
1005 gatt_client_handle_server_rsp (p_tcb, op_code, msg_len, p);
1006 #endif ///GATTC_INCLUDED == TRUE
1007 }
1008 }
1009 } else {
1010 if (op_code & GATT_COMMAND_FLAG) {
1011 GATT_TRACE_ERROR ("ATT - Rcvd L2CAP data, unknown cmd: 0x%x\n", op_code);
1012 } else {
1013 GATT_TRACE_ERROR ("ATT - Rcvd L2CAP data, unknown req: 0x%x\n", op_code);
1014 gatt_send_error_rsp (p_tcb, GATT_REQ_NOT_SUPPORTED, op_code, 0, FALSE);
1015 }
1016 }
1017 } else {
1018 GATT_TRACE_ERROR ("invalid data length, ignore\n");
1019 }
1020
1021 osi_free (p_buf);
1022 }
1023
1024 /*******************************************************************************
1025 **
1026 ** Function gatt_add_a_bonded_dev_for_srv_chg
1027 **
1028 ** Description Add a bonded dev to the service changed client list
1029 **
1030 ** Returns void
1031 **
1032 *******************************************************************************/
gatt_add_a_bonded_dev_for_srv_chg(BD_ADDR bda)1033 void gatt_add_a_bonded_dev_for_srv_chg (BD_ADDR bda)
1034 {
1035 tGATTS_SRV_CHG_REQ req;
1036 tGATTS_SRV_CHG srv_chg_clt;
1037
1038 memcpy(srv_chg_clt.bda, bda, BD_ADDR_LEN);
1039 srv_chg_clt.srv_changed = FALSE;
1040 if (gatt_add_srv_chg_clt(&srv_chg_clt) != NULL) {
1041 memcpy(req.srv_chg.bda, bda, BD_ADDR_LEN);
1042 req.srv_chg.srv_changed = FALSE;
1043 if (gatt_cb.cb_info.p_srv_chg_callback) {
1044 (*gatt_cb.cb_info.p_srv_chg_callback)(GATTS_SRV_CHG_CMD_ADD_CLIENT, &req, NULL);
1045 }
1046 }
1047 }
1048
1049 /*******************************************************************************
1050 **
1051 ** Function gatt_send_srv_chg_ind
1052 **
1053 ** Description This function is called to send a service changed indication to
1054 ** the specified bd address
1055 **
1056 ** Returns GATT_SUCCESS if successfully sent; otherwise error code
1057 **
1058 *******************************************************************************/
1059 #if (GATTS_INCLUDED == TRUE)
gatt_send_srv_chg_ind(BD_ADDR peer_bda)1060 tGATT_STATUS gatt_send_srv_chg_ind (BD_ADDR peer_bda)
1061 {
1062 UINT8 handle_range[GATT_SIZE_OF_SRV_CHG_HNDL_RANGE];
1063 UINT8 *p = handle_range;
1064 UINT16 conn_id;
1065 tGATT_STATUS status = GATT_ERROR;
1066 GATT_TRACE_DEBUG("gatt_send_srv_chg_ind");
1067
1068 if (gatt_cb.handle_of_h_r) {
1069 if ((conn_id = gatt_profile_find_conn_id_by_bd_addr(peer_bda)) != GATT_INVALID_CONN_ID) {
1070 UINT16_TO_STREAM (p, 1);
1071 UINT16_TO_STREAM (p, 0xFFFF);
1072 status = GATTS_HandleValueIndication (conn_id,
1073 gatt_cb.handle_of_h_r,
1074 GATT_SIZE_OF_SRV_CHG_HNDL_RANGE,
1075 handle_range);
1076 } else {
1077 status = GATT_NOT_FOUND;
1078 GATT_TRACE_ERROR("Unable to find conn_id for %02x%02x%02x%02x%02x%02x ",
1079 peer_bda[0], peer_bda[1], peer_bda[2], peer_bda[3], peer_bda[4], peer_bda[5]);
1080 }
1081 }
1082 return status;
1083 }
1084
1085
1086 /*******************************************************************************
1087 **
1088 ** Function gatt_chk_srv_chg
1089 **
1090 ** Description Check sending service changed Indication is required or not
1091 ** if required then send the Indication
1092 **
1093 ** Returns void
1094 **
1095 *******************************************************************************/
gatt_chk_srv_chg(tGATTS_SRV_CHG * p_srv_chg_clt)1096 void gatt_chk_srv_chg(tGATTS_SRV_CHG *p_srv_chg_clt)
1097 {
1098 GATT_TRACE_DEBUG("gatt_chk_srv_chg srv_changed=%d", p_srv_chg_clt->srv_changed );
1099
1100 if (p_srv_chg_clt->srv_changed) {
1101 gatt_send_srv_chg_ind(p_srv_chg_clt->bda);
1102 }
1103 }
1104 #endif ///GATTS_INCLUDED == TRUE
1105
1106
1107 /*******************************************************************************
1108 **
1109 ** Function gatt_init_srv_chg
1110 **
1111 ** Description This function is used to initialize the service changed
1112 ** attribute value
1113 **
1114 ** Returns void
1115 **
1116 *******************************************************************************/
gatt_init_srv_chg(void)1117 void gatt_init_srv_chg (void)
1118 {
1119 tGATTS_SRV_CHG_REQ req;
1120 tGATTS_SRV_CHG_RSP rsp;
1121 BOOLEAN status;
1122 UINT8 num_clients, i;
1123 tGATTS_SRV_CHG srv_chg_clt;
1124
1125 GATT_TRACE_DEBUG("gatt_init_srv_chg");
1126 if (gatt_cb.cb_info.p_srv_chg_callback) {
1127 status = (*gatt_cb.cb_info.p_srv_chg_callback)(GATTS_SRV_CHG_CMD_READ_NUM_CLENTS, NULL, &rsp);
1128
1129 if (status && rsp.num_clients) {
1130 GATT_TRACE_DEBUG("gatt_init_srv_chg num_srv_chg_clt_clients=%d", rsp.num_clients);
1131 num_clients = rsp.num_clients;
1132 i = 1; /* use one based index */
1133 while ((i <= num_clients) && status) {
1134 req.client_read_index = i;
1135 if ((status = (*gatt_cb.cb_info.p_srv_chg_callback)(GATTS_SRV_CHG_CMD_READ_CLENT, &req, &rsp)) == TRUE) {
1136 memcpy(&srv_chg_clt, &rsp.srv_chg , sizeof(tGATTS_SRV_CHG));
1137 if (gatt_add_srv_chg_clt(&srv_chg_clt) == NULL) {
1138 GATT_TRACE_ERROR("Unable to add a service change client");
1139 status = FALSE;
1140 }
1141 }
1142 i++;
1143 }
1144 }
1145 } else {
1146 GATT_TRACE_DEBUG("gatt_init_srv_chg callback not registered yet");
1147 }
1148 }
1149
1150 /*******************************************************************************
1151 **
1152 ** Function gatt_proc_srv_chg
1153 **
1154 ** Description This function is process the service changed request
1155 **
1156 ** Returns void
1157 **
1158 *******************************************************************************/
1159 #if (GATTS_INCLUDED == TRUE)
gatt_proc_srv_chg(void)1160 void gatt_proc_srv_chg (void)
1161 {
1162 UINT8 start_idx, found_idx;
1163 BD_ADDR bda;
1164 BOOLEAN srv_chg_ind_pending = FALSE;
1165 tGATT_TCB *p_tcb;
1166 tBT_TRANSPORT transport;
1167
1168 GATT_TRACE_DEBUG ("gatt_proc_srv_chg");
1169
1170 if (gatt_cb.cb_info.p_srv_chg_callback && gatt_cb.handle_of_h_r) {
1171 gatt_set_srv_chg();
1172 start_idx = 0;
1173 while (gatt_find_the_connected_bda(start_idx, bda, &found_idx, &transport)) {
1174 p_tcb = gatt_get_tcb_by_idx(found_idx);
1175 srv_chg_ind_pending = gatt_is_srv_chg_ind_pending(p_tcb);
1176
1177 if (!srv_chg_ind_pending) {
1178 gatt_send_srv_chg_ind(bda);
1179 } else {
1180 GATT_TRACE_DEBUG ("discard srv chg - already has one in the queue");
1181 }
1182 start_idx = ++found_idx;
1183 }
1184 }
1185 }
1186 #endif ///GATTS_INCLUDED == TRUE
1187
1188 /*******************************************************************************
1189 **
1190 ** Function gatt_set_ch_state
1191 **
1192 ** Description This function set the ch_state in tcb
1193 **
1194 ** Returns none
1195 **
1196 *******************************************************************************/
gatt_set_ch_state(tGATT_TCB * p_tcb,tGATT_CH_STATE ch_state)1197 void gatt_set_ch_state(tGATT_TCB *p_tcb, tGATT_CH_STATE ch_state)
1198 {
1199 if (p_tcb) {
1200 GATT_TRACE_DEBUG ("gatt_set_ch_state: old=%d new=%d", p_tcb->ch_state, ch_state);
1201 p_tcb->ch_state = ch_state;
1202 }
1203 }
1204
1205 /*******************************************************************************
1206 **
1207 ** Function gatt_get_ch_state
1208 **
1209 ** Description This function get the ch_state in tcb
1210 **
1211 ** Returns none
1212 **
1213 *******************************************************************************/
gatt_get_ch_state(tGATT_TCB * p_tcb)1214 tGATT_CH_STATE gatt_get_ch_state(tGATT_TCB *p_tcb)
1215 {
1216 tGATT_CH_STATE ch_state = GATT_CH_CLOSE;
1217 if (p_tcb) {
1218 GATT_TRACE_DEBUG ("gatt_get_ch_state: ch_state=%d", p_tcb->ch_state);
1219 ch_state = p_tcb->ch_state;
1220 }
1221 return ch_state;
1222 }
1223
gatt_get_local_mtu(void)1224 uint16_t gatt_get_local_mtu(void)
1225 {
1226 return gatt_default.local_mtu;
1227 }
1228
gatt_set_local_mtu(uint16_t mtu)1229 void gatt_set_local_mtu(uint16_t mtu)
1230 {
1231 gatt_default.local_mtu = mtu;
1232 }
1233
gatt_tcb_active_count(void)1234 uint8_t gatt_tcb_active_count(void)
1235 {
1236 tGATT_TCB *p_tcb = NULL;
1237 list_node_t *p_node = NULL;
1238 uint8_t count = 0;
1239
1240 for(p_node = list_begin(gatt_cb.p_tcb_list); p_node; p_node = list_next(p_node)) {
1241 p_tcb = list_node(p_node);
1242 if (p_tcb && p_tcb->in_use && (p_tcb->ch_state != GATT_CH_CLOSE)) {
1243 count++;
1244 }
1245 }
1246
1247 return count;
1248 }
1249
1250 #endif /* BLE_INCLUDED */
1251
