/******************************************************************************
*
* Copyright (C) 2008-2012 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/******************************************************************************
*
* this file contains the main ATT functions
*
******************************************************************************/
#include "bt_target.h"
#if BLE_INCLUDED == TRUE
#include "gki.h"
#include "gatt_int.h"
#include "l2c_api.h"
#include "btm_int.h"
#include "btm_ble_int.h"
/* Configuration flags. */
#define GATT_L2C_CFG_IND_DONE (1<<0)
#define GATT_L2C_CFG_CFM_DONE (1<<1)
/* minimum GATT MTU size over BR/EDR link
*/
#define GATT_MIN_BR_MTU_SIZE 48
/********************************************************************************/
/* L O C A L F U N C T I O N P R O T O T Y P E S */
/********************************************************************************/
static void gatt_le_connect_cback (BD_ADDR bd_addr, BOOLEAN connected, UINT16 reason);
static void gatt_le_data_ind (BD_ADDR bd_addr, BT_HDR *p_buf);
static void gatt_l2cif_connect_ind_cback (BD_ADDR bd_addr, UINT16 l2cap_cid, UINT16 psm, UINT8 l2cap_id);
static void gatt_l2cif_connect_cfm_cback (UINT16 l2cap_cid, UINT16 result);
static void gatt_l2cif_config_ind_cback (UINT16 l2cap_cid, tL2CAP_CFG_INFO *p_cfg);
static void gatt_l2cif_config_cfm_cback (UINT16 l2cap_cid, tL2CAP_CFG_INFO *p_cfg);
static void gatt_l2cif_disconnect_ind_cback (UINT16 l2cap_cid, BOOLEAN ack_needed);
static void gatt_l2cif_disconnect_cfm_cback (UINT16 l2cap_cid, UINT16 result);
static void gatt_l2cif_data_ind_cback (UINT16 l2cap_cid, BT_HDR *p_msg);
static void gatt_send_conn_cback (tGATT_TCB *p_tcb);
static const tL2CAP_APPL_INFO dyn_info =
{
gatt_l2cif_connect_ind_cback,
gatt_l2cif_connect_cfm_cback,
NULL,
gatt_l2cif_config_ind_cback,
gatt_l2cif_config_cfm_cback,
gatt_l2cif_disconnect_ind_cback,
gatt_l2cif_disconnect_cfm_cback,
NULL,
gatt_l2cif_data_ind_cback,
NULL
} ;
#if GATT_DYNAMIC_MEMORY == FALSE
tGATT_CB gatt_cb;
#endif
/*******************************************************************************
**
** Function gatt_init
**
** Description This function is enable the GATT profile on the device.
** It clears out the control blocks, and registers with L2CAP.
**
** Returns void
**
*******************************************************************************/
void gatt_init (void)
{
tL2CAP_FIXED_CHNL_REG fixed_reg;
GATT_TRACE_DEBUG0("gatt_init()");
memset (&gatt_cb, 0, sizeof(tGATT_CB));
#if defined(GATT_INITIAL_TRACE_LEVEL)
gatt_cb.trace_level = GATT_INITIAL_TRACE_LEVEL;
#else
gatt_cb.trace_level = BT_TRACE_LEVEL_NONE; /* No traces */
#endif
gatt_cb.def_mtu_size = GATT_DEF_BLE_MTU_SIZE;
GKI_init_q (&gatt_cb.sign_op_queue);
/* First, register fixed L2CAP channel for ATT over BLE */
fixed_reg.fixed_chnl_opts.mode = L2CAP_FCR_BASIC_MODE;
fixed_reg.fixed_chnl_opts.max_transmit = 0xFF;
fixed_reg.fixed_chnl_opts.rtrans_tout = 2000;
fixed_reg.fixed_chnl_opts.mon_tout = 12000;
fixed_reg.fixed_chnl_opts.mps = 670;
fixed_reg.fixed_chnl_opts.tx_win_sz = 1;
fixed_reg.pL2CA_FixedConn_Cb = gatt_le_connect_cback;
fixed_reg.pL2CA_FixedData_Cb = gatt_le_data_ind;
fixed_reg.default_idle_tout = 0xffff; /* 0xffff default idle timeout */
L2CA_RegisterFixedChannel (L2CAP_ATT_CID, &fixed_reg);
/* Now, register with L2CAP for ATT PSM over BR/EDR */
if (!L2CA_Register (BT_PSM_ATT, (tL2CAP_APPL_INFO *) &dyn_info))
{
GATT_TRACE_ERROR0 ("ATT Dynamic Registration failed");
}
BTM_SetSecurityLevel(TRUE, "", BTM_SEC_SERVICE_ATT, BTM_SEC_NONE, BT_PSM_ATT, 0, 0);
BTM_SetSecurityLevel(FALSE, "", BTM_SEC_SERVICE_ATT, BTM_SEC_NONE, BT_PSM_ATT, 0, 0);
gatt_cb.hdl_cfg.gatt_start_hdl = GATT_GATT_START_HANDLE;
gatt_cb.hdl_cfg.gap_start_hdl = GATT_GAP_START_HANDLE;
gatt_cb.hdl_cfg.app_start_hdl = GATT_APP_START_HANDLE;
gatt_profile_db_init();
}
/*******************************************************************************
**
** Function gatt_connect
**
** Description This function is called to initiate a connection to a peer device.
**
** Parameter rem_bda: remote device address to connect to.
**
** Returns TRUE if connection is started, otherwise return FALSE.
**
*******************************************************************************/
BOOLEAN gatt_connect (BD_ADDR rem_bda, tGATT_TCB *p_tcb)
{
BOOLEAN gatt_ret = FALSE;
if (gatt_get_ch_state(p_tcb) != GATT_CH_OPEN)
gatt_set_ch_state(p_tcb, GATT_CH_CONN);
/* select the physical link for GATT connection */
if (BTM_UseLeLink(rem_bda))
{
p_tcb->att_lcid = L2CAP_ATT_CID;
gatt_ret = L2CA_ConnectFixedChnl (L2CAP_ATT_CID, rem_bda);
}
else
{
if ((p_tcb->att_lcid = L2CA_ConnectReq(BT_PSM_ATT, rem_bda)) != 0)
gatt_ret = TRUE;
}
return gatt_ret;
}
/*******************************************************************************
**
** Function gatt_disconnect
**
** Description This function is called to disconnect to an ATT device.
**
** Parameter rem_bda: remote device address to disconnect from.
**
** Returns TRUE: if connection found and to be disconnected; otherwise
** return FALSE.
**
*******************************************************************************/
BOOLEAN gatt_disconnect (BD_ADDR rem_bda)
{
tGATT_TCB *p_tcb = gatt_find_tcb_by_addr(rem_bda);
BOOLEAN ret = FALSE;
tGATT_CH_STATE ch_state;
GATT_TRACE_DEBUG0 ("gatt_disconnect ");
if (p_tcb != NULL)
{
ret = TRUE;
if ( (ch_state = gatt_get_ch_state(p_tcb)) != GATT_CH_CLOSING )
{
if (p_tcb->att_lcid == L2CAP_ATT_CID)
{
if (ch_state == GATT_CH_OPEN)
{
/* only LCB exist between remote device and local */
ret = L2CA_RemoveFixedChnl (L2CAP_ATT_CID, rem_bda);
}
else
{
gatt_set_ch_state(p_tcb, GATT_CH_CLOSING);
ret = L2CA_CancelBleConnectReq (rem_bda);
}
}
else
{
ret = L2CA_DisconnectReq(p_tcb->att_lcid);
}
}
else
{
GATT_TRACE_DEBUG0 ("gatt_disconnect already in closing state");
}
}
return ret;
}
/*******************************************************************************
**
** Function gatt_update_app_hold_link_status
**
** Description Update the application use link status
**
** Returns void.
**
*******************************************************************************/
void gatt_update_app_hold_link_status (tGATT_IF gatt_if, tGATT_TCB *p_tcb, BOOLEAN is_add)
{
UINT8 i;
BOOLEAN found=FALSE;
if (p_tcb == NULL)
{
GATT_TRACE_ERROR0("gatt_update_app_hold_link_status p_tcb=NULL");
return;
}
for (i=0; i<GATT_MAX_APPS; i++)
{
if (p_tcb->app_hold_link[i] == gatt_if)
{
found = TRUE;
if (!is_add)
{
p_tcb->app_hold_link[i] = 0;
break;
}
}
}
if (!found && is_add)
{
for (i=0; i<GATT_MAX_APPS; i++)
{
if (p_tcb->app_hold_link[i] == 0)
{
p_tcb->app_hold_link[i] = gatt_if;
found = TRUE;
break;
}
}
}
GATT_TRACE_DEBUG4("gatt_update_app_hold_link_status found=%d[1-found] idx=%d gatt_if=%d is_add=%d", found, i, gatt_if, is_add);
}
/*******************************************************************************
**
** Function gatt_update_app_use_link_flag
**
** Description Update the application use link flag and optional to check the acl link
** if the link is up then set the idle time out accordingly
**
** Returns void.
**
*******************************************************************************/
void gatt_update_app_use_link_flag (tGATT_IF gatt_if, tGATT_TCB *p_tcb, BOOLEAN is_add, BOOLEAN check_acl_link)
{
GATT_TRACE_DEBUG2("gatt_update_app_use_link_flag is_add=%d chk_link=%d",
is_add, check_acl_link);
gatt_update_app_hold_link_status(gatt_if, p_tcb, is_add);
if (check_acl_link &&
p_tcb &&
(BTM_GetHCIConnHandle(p_tcb->peer_bda) != GATT_INVALID_ACL_HANDLE))
{
if (is_add)
{
GATT_TRACE_DEBUG0("GATT disables link idle timer");
/* acl link is connected disable the idle timeout */
GATT_SetIdleTimeout(p_tcb->peer_bda, GATT_LINK_NO_IDLE_TIMEOUT);
}
else
{
if (!gatt_num_apps_hold_link(p_tcb))
{
/* acl link is connected but no application needs to use the link
so set the timeout value to GATT_LINK_IDLE_TIMEOUT_WHEN_NO_APP seconds */
GATT_TRACE_DEBUG1("GATT starts link idle timer =%d sec", GATT_LINK_IDLE_TIMEOUT_WHEN_NO_APP);
GATT_SetIdleTimeout(p_tcb->peer_bda, GATT_LINK_IDLE_TIMEOUT_WHEN_NO_APP);
}
}
}
}
/*******************************************************************************
**
** Function gatt_act_connect
**
** Description GATT connection initiation.
**
** Returns void.
**
*******************************************************************************/
BOOLEAN gatt_act_connect (tGATT_REG *p_reg, BD_ADDR bd_addr)
{
BOOLEAN ret = FALSE;
tGATT_TCB *p_tcb;
UINT8 st;
GATT_TRACE_DEBUG0("gatt_act_connect");
if ((p_tcb = gatt_find_tcb_by_addr(bd_addr)) != NULL)
{
ret = TRUE;
st = gatt_get_ch_state(p_tcb);
/* before link down, another app try to open a GATT connection */
if(st == GATT_CH_OPEN && gatt_num_apps_hold_link(p_tcb) == 0 &&
/* only connection on fix channel when the l2cap channel is already open */
p_tcb->att_lcid == L2CAP_ATT_CID )
{
if (!gatt_connect(bd_addr, p_tcb))
ret = FALSE;
}
else if(st == GATT_CH_CLOSING)
{
/* need to complete the closing first */
ret = FALSE;
}
}
else
{
if ((p_tcb = gatt_allocate_tcb_by_bdaddr(bd_addr)) != NULL)
{
if (!gatt_connect(bd_addr, p_tcb))
{
GATT_TRACE_ERROR0("gatt_connect failed");
memset(p_tcb, 0, sizeof(tGATT_TCB));
}
else
ret = TRUE;
}
else
{
ret = 0;
GATT_TRACE_ERROR1("Max TCB for gatt_if [%d] reached.", p_reg->gatt_if);
}
}
if (ret)
{
gatt_update_app_use_link_flag(p_reg->gatt_if, p_tcb, TRUE, FALSE);
}
return ret;
}
/*******************************************************************************
**
** Function gatt_le_connect_cback
**
** Description This callback function is called by L2CAP to indicate that
** the ATT fixed channel for LE is
** connected (conn = TRUE)/disconnected (conn = FALSE).
**
*******************************************************************************/
static void gatt_le_connect_cback (BD_ADDR bd_addr, BOOLEAN connected, UINT16 reason)
{
tGATT_TCB *p_tcb = gatt_find_tcb_by_addr(bd_addr);
BOOLEAN check_srv_chg = FALSE;
tGATTS_SRV_CHG *p_srv_chg_clt=NULL;
GATT_TRACE_DEBUG3 ("GATT ATT protocol channel with BDA: %08x%04x is %s",
(bd_addr[0]<<24)+(bd_addr[1]<<16)+(bd_addr[2]<<8)+bd_addr[3],
(bd_addr[4]<<8)+bd_addr[5], (connected) ? "connected" : "disconnected");
if ((p_srv_chg_clt = gatt_is_bda_in_the_srv_chg_clt_list(bd_addr)) != NULL)
{
check_srv_chg = TRUE;
}
else
{
if (btm_sec_is_a_bonded_dev(bd_addr))
gatt_add_a_bonded_dev_for_srv_chg(bd_addr);
}
if (connected)
{
GATT_TRACE_DEBUG1("connected is TRUE reason=%d",reason );
/* BR/EDR lik, ignore this callback */
if (reason == 0)
return;
/* do we have a channel initiating a connection? */
if (p_tcb)
{
if (check_srv_chg)
gatt_chk_srv_chg (p_srv_chg_clt);
/* we are initiating connection */
if ( gatt_get_ch_state(p_tcb) == GATT_CH_CONN)
{
/* send callback */
gatt_set_ch_state(p_tcb, GATT_CH_OPEN);
p_tcb->payload_size = GATT_DEF_BLE_MTU_SIZE;
gatt_send_conn_cback(p_tcb);
}
}
/* this is incoming connection or background connection callback */
else
{
if ((p_tcb = gatt_allocate_tcb_by_bdaddr(bd_addr)) != NULL)
{
p_tcb->att_lcid = L2CAP_ATT_CID;
gatt_set_ch_state(p_tcb, GATT_CH_OPEN);
p_tcb->payload_size = GATT_DEF_BLE_MTU_SIZE;
gatt_send_conn_cback (p_tcb);
if (check_srv_chg)
{
gatt_chk_srv_chg (p_srv_chg_clt);
}
}
else
{
GATT_TRACE_ERROR0("CCB max out, no rsources");
}
}
}
else
{
gatt_cleanup_upon_disc(bd_addr, reason);
GATT_TRACE_DEBUG0 ("ATT disconnected");
}
}
/*******************************************************************************
**
** Function gatt_le_data_ind
**
** Description This function is called when data is received from L2CAP.
** if we are the originator of the connection, we are the ATT
** client, and the received message is queued up for the client.
**
** If we are the destination of the connection, we are the ATT
** server, so the message is passed to the server processing
** function.
**
** Returns void
**
*******************************************************************************/
static void gatt_le_data_ind (BD_ADDR bd_addr, BT_HDR *p_buf)
{
tGATT_TCB *p_tcb;
/* Find CCB based on bd addr */
if ((p_tcb = gatt_find_tcb_by_addr (bd_addr)) != NULL &&
gatt_get_ch_state(p_tcb) >= GATT_CH_OPEN)
{
gatt_data_process(p_tcb, p_buf);
}
else
{
GKI_freebuf (p_buf);
if (p_tcb != NULL)
{
GATT_TRACE_WARNING1 ("ATT - Ignored L2CAP data while in state: %d",
gatt_get_ch_state(p_tcb));
}
}
}
/*******************************************************************************
**
** Function gatt_l2cif_connect_ind
**
** Description This function handles an inbound connection indication
** from L2CAP. This is the case where we are acting as a
** server.
**
** Returns void
**
*******************************************************************************/
static void gatt_l2cif_connect_ind_cback (BD_ADDR bd_addr, UINT16 lcid, UINT16 psm, UINT8 id)
{
/* do we already have a control channel for this peer? */
UINT8 result = L2CAP_CONN_OK;
tL2CAP_CFG_INFO cfg;
tGATT_TCB *p_tcb = gatt_find_tcb_by_addr(bd_addr);
GATT_TRACE_ERROR1("Connection indication cid = %d", lcid);
/* new connection ? */
if (p_tcb == NULL)
{
/* allocate tcb */
if ((p_tcb = gatt_allocate_tcb_by_bdaddr(bd_addr)) == NULL)
{
/* no tcb available, reject L2CAP connection */
result = L2CAP_CONN_NO_RESOURCES;
}
else
p_tcb->att_lcid = lcid;
}
else /* existing connection , reject it */
{
result = L2CAP_CONN_NO_RESOURCES;
}
/* Send L2CAP connect rsp */
L2CA_ConnectRsp(bd_addr, id, lcid, result, 0);
/* if result ok, proceed with connection */
if (result == L2CAP_CONN_OK)
{
/* transition to configuration state */
gatt_set_ch_state(p_tcb, GATT_CH_CFG);
/* Send L2CAP config req */
memset(&cfg, 0, sizeof(tL2CAP_CFG_INFO));
cfg.mtu_present = TRUE;
cfg.mtu = GATT_MAX_MTU_SIZE;
L2CA_ConfigReq(lcid, &cfg);
}
}
/*******************************************************************************
**
** Function gatt_l2c_connect_cfm_cback
**
** Description This is the L2CAP connect confirm callback function.
**
**
** Returns void
**
*******************************************************************************/
void gatt_l2cif_connect_cfm_cback(UINT16 lcid, UINT16 result)
{
tGATT_TCB *p_tcb;
tL2CAP_CFG_INFO cfg;
/* look up clcb for this channel */
if ((p_tcb = gatt_find_tcb_by_cid(lcid)) != NULL)
{
GATT_TRACE_DEBUG3("gatt_l2c_connect_cfm_cback result: %d ch_state: %d, lcid:0x%x", result, gatt_get_ch_state(p_tcb), p_tcb->att_lcid);
/* if in correct state */
if (gatt_get_ch_state(p_tcb) == GATT_CH_CONN)
{
/* if result successful */
if (result == L2CAP_CONN_OK)
{
/* set channel state */
gatt_set_ch_state(p_tcb, GATT_CH_CFG);
/* Send L2CAP config req */
memset(&cfg, 0, sizeof(tL2CAP_CFG_INFO));
cfg.mtu_present = TRUE;
cfg.mtu = GATT_MAX_MTU_SIZE;
L2CA_ConfigReq(lcid, &cfg);
}
/* else initiating connection failure */
else
{
gatt_cleanup_upon_disc(p_tcb->peer_bda, GATT_CONN_L2C_FAILURE);
}
}
else /* wrong state, disconnect it */
{
if (result == L2CAP_CONN_OK)
{
/* just in case the peer also accepts our connection - Send L2CAP disconnect req */
L2CA_DisconnectReq(lcid);
}
}
}
}
/*******************************************************************************
**
** Function gatt_l2cif_config_cfm_cback
**
** Description This is the L2CAP config confirm callback function.
**
**
** Returns void
**
*******************************************************************************/
void gatt_l2cif_config_cfm_cback(UINT16 lcid, tL2CAP_CFG_INFO *p_cfg)
{
tGATT_TCB *p_tcb;
tGATTS_SRV_CHG *p_srv_chg_clt=NULL;
/* look up clcb for this channel */
if ((p_tcb = gatt_find_tcb_by_cid(lcid)) != NULL)
{
/* if in correct state */
if ( gatt_get_ch_state(p_tcb) == GATT_CH_CFG)
{
/* if result successful */
if (p_cfg->result == L2CAP_CFG_OK)
{
/* update flags */
p_tcb->ch_flags |= GATT_L2C_CFG_CFM_DONE;
/* if configuration complete */
if (p_tcb->ch_flags & GATT_L2C_CFG_IND_DONE)
{
gatt_set_ch_state(p_tcb, GATT_CH_OPEN);
if ((p_srv_chg_clt = gatt_is_bda_in_the_srv_chg_clt_list(p_tcb->peer_bda)) != NULL)
{
gatt_chk_srv_chg(p_srv_chg_clt);
}
else
{
if (btm_sec_is_a_bonded_dev(p_tcb->peer_bda))
gatt_add_a_bonded_dev_for_srv_chg(p_tcb->peer_bda);
}
/* send callback */
gatt_send_conn_cback(p_tcb);
}
}
/* else failure */
else
{
/* Send L2CAP disconnect req */
L2CA_DisconnectReq(lcid);
}
}
}
}
/*******************************************************************************
**
** Function gatt_l2cif_config_ind_cback
**
** Description This is the L2CAP config indication callback function.
**
**
** Returns void
**
*******************************************************************************/
void gatt_l2cif_config_ind_cback(UINT16 lcid, tL2CAP_CFG_INFO *p_cfg)
{
tGATT_TCB *p_tcb;
tGATTS_SRV_CHG *p_srv_chg_clt=NULL;
/* look up clcb for this channel */
if ((p_tcb = gatt_find_tcb_by_cid(lcid)) != NULL)
{
/* GATT uses the smaller of our MTU and peer's MTU */
if ( p_cfg->mtu_present &&
(p_cfg->mtu >= GATT_MIN_BR_MTU_SIZE && p_cfg->mtu < L2CAP_DEFAULT_MTU))
p_tcb->payload_size = p_cfg->mtu;
else
p_tcb->payload_size = L2CAP_DEFAULT_MTU;
/* send L2CAP configure response */
memset(p_cfg, 0, sizeof(tL2CAP_CFG_INFO));
p_cfg->result = L2CAP_CFG_OK;
L2CA_ConfigRsp(lcid, p_cfg);
/* if first config ind */
if ((p_tcb->ch_flags & GATT_L2C_CFG_IND_DONE) == 0)
{
/* update flags */
p_tcb->ch_flags |= GATT_L2C_CFG_IND_DONE;
/* if configuration complete */
if (p_tcb->ch_flags & GATT_L2C_CFG_CFM_DONE)
{
gatt_set_ch_state(p_tcb, GATT_CH_OPEN);
if ((p_srv_chg_clt = gatt_is_bda_in_the_srv_chg_clt_list(p_tcb->peer_bda)) != NULL)
{
gatt_chk_srv_chg(p_srv_chg_clt);
}
else
{
if (btm_sec_is_a_bonded_dev(p_tcb->peer_bda) &&
btm_sec_is_le_capable_dev(p_tcb->peer_bda))
{
gatt_add_a_bonded_dev_for_srv_chg(p_tcb->peer_bda);
}
}
/* send callback */
gatt_send_conn_cback(p_tcb);
}
}
}
}
/*******************************************************************************
**
** Function gatt_l2cif_disconnect_ind_cback
**
** Description This is the L2CAP disconnect indication callback function.
**
**
** Returns void
**
*******************************************************************************/
void gatt_l2cif_disconnect_ind_cback(UINT16 lcid, BOOLEAN ack_needed)
{
tGATT_TCB *p_tcb;
UINT16 reason;
/* look up clcb for this channel */
if ((p_tcb = gatt_find_tcb_by_cid(lcid)) != NULL)
{
if (ack_needed)
{
/* send L2CAP disconnect response */
L2CA_DisconnectRsp(lcid);
}
if (gatt_is_bda_in_the_srv_chg_clt_list(p_tcb->peer_bda) == NULL)
{
if (btm_sec_is_a_bonded_dev(p_tcb->peer_bda) &&
btm_sec_is_le_capable_dev(p_tcb->peer_bda))
gatt_add_a_bonded_dev_for_srv_chg(p_tcb->peer_bda);
}
/* if ACL link is still up, no reason is logged, l2cap is disconnect from peer */
if ((reason = L2CA_GetDisconnectReason(p_tcb->peer_bda)) == 0)
reason = GATT_CONN_TERMINATE_PEER_USER;
/* send disconnect callback */
gatt_cleanup_upon_disc(p_tcb->peer_bda, reason);
}
}
/*******************************************************************************
**
** Function gatt_l2cif_disconnect_cfm_cback
**
** Description This is the L2CAP disconnect confirm callback function.
**
**
** Returns void
**
*******************************************************************************/
void gatt_l2cif_disconnect_cfm_cback(UINT16 lcid, UINT16 result)
{
tGATT_TCB *p_tcb;
UINT16 reason;
/* look up clcb for this channel */
if ((p_tcb = gatt_find_tcb_by_cid(lcid)) != NULL)
{
/* If the device is not in the service changed client list, add it... */
if (gatt_is_bda_in_the_srv_chg_clt_list(p_tcb->peer_bda) == NULL)
{
if (btm_sec_is_a_bonded_dev(p_tcb->peer_bda) &&
btm_sec_is_le_capable_dev(p_tcb->peer_bda))
gatt_add_a_bonded_dev_for_srv_chg(p_tcb->peer_bda);
}
/* send disconnect callback */
/* if ACL link is still up, no reason is logged, l2cap is disconnect from peer */
if ((reason = L2CA_GetDisconnectReason(p_tcb->peer_bda)) == 0)
reason = GATT_CONN_TERMINATE_LOCAL_HOST;
gatt_cleanup_upon_disc(p_tcb->peer_bda, reason);
}
}
/*******************************************************************************
**
** Function gatt_l2cif_data_ind_cback
**
** Description This is the L2CAP data indication callback function.
**
**
** Returns void
**
*******************************************************************************/
void gatt_l2cif_data_ind_cback(UINT16 lcid, BT_HDR *p_buf)
{
tGATT_TCB *p_tcb;
/* look up clcb for this channel */
if ((p_tcb = gatt_find_tcb_by_cid(lcid)) != NULL &&
gatt_get_ch_state(p_tcb) == GATT_CH_OPEN)
{
/* process the data */
gatt_data_process(p_tcb, p_buf);
}
else /* prevent buffer leak */
GKI_freebuf(p_buf);
}
/*******************************************************************************
**
** Function gatt_send_conn_cback
**
** Description Callback used to notify layer above about a connection.
**
**
** Returns void
**
*******************************************************************************/
static void gatt_send_conn_cback(tGATT_TCB *p_tcb)
{
UINT8 i;
tGATT_REG *p_reg;
tGATT_BG_CONN_DEV *p_bg_dev=NULL;
UINT16 conn_id;
p_bg_dev = gatt_find_bg_dev(p_tcb->peer_bda);
/* notifying all applications for the connection up event */
for (i = 0, p_reg = gatt_cb.cl_rcb ; i < GATT_MAX_APPS; i++, p_reg++)
{
if (p_reg->in_use)
{
if (p_bg_dev && gatt_is_bg_dev_for_app(p_bg_dev, p_reg->gatt_if))
gatt_update_app_use_link_flag(p_reg->gatt_if, p_tcb, TRUE, TRUE);
if (p_reg->app_cb.p_conn_cb)
{
conn_id = GATT_CREATE_CONN_ID(p_tcb->tcb_idx, p_reg->gatt_if);
(*p_reg->app_cb.p_conn_cb)(p_reg->gatt_if, p_tcb->peer_bda, conn_id, TRUE, 0);
}
}
}
if (gatt_num_apps_hold_link(p_tcb))
{
/* disable idle timeout if one or more clients are holding the link disable the idle timer */
GATT_SetIdleTimeout(p_tcb->peer_bda, GATT_LINK_NO_IDLE_TIMEOUT);
}
}
/*******************************************************************************
**
** Function gatt_le_data_ind
**
** Description This function is called when data is received from L2CAP.
** if we are the originator of the connection, we are the ATT
** client, and the received message is queued up for the client.
**
** If we are the destination of the connection, we are the ATT
** server, so the message is passed to the server processing
** function.
**
** Returns void
**
*******************************************************************************/
void gatt_data_process (tGATT_TCB *p_tcb, BT_HDR *p_buf)
{
UINT8 *p = (UINT8 *)(p_buf + 1) + p_buf->offset;
UINT8 op_code, pseudo_op_code;
UINT16 msg_len;
if (p_buf->len > 0)
{
msg_len = p_buf->len - 1;
STREAM_TO_UINT8(op_code, p);
/* remove the two MSBs associated with sign write and write cmd */
pseudo_op_code = op_code & (~GATT_WRITE_CMD_MASK);
if (pseudo_op_code < GATT_OP_CODE_MAX)
{
if (op_code == GATT_SIGN_CMD_WRITE)
{
gatt_verify_signature(p_tcb, p_buf);
return;
}
else
{
/* message from client */
if ((op_code % 2) == 0)
gatt_server_handle_client_req (p_tcb, op_code, msg_len, p);
else
gatt_client_handle_server_rsp (p_tcb, op_code, msg_len, p);
}
}
else
{
GATT_TRACE_ERROR1 ("ATT - Rcvd L2CAP data, unknown cmd: 0x%x", op_code);
}
}
else
{
GATT_TRACE_ERROR0 ("invalid data length, ignore");
}
GKI_freebuf (p_buf);
}
/*******************************************************************************
**
** Function gatt_add_a_bonded_dev_for_srv_chg
**
** Description Add a bonded dev to the service changed client list
**
** Returns void
**
*******************************************************************************/
void gatt_add_a_bonded_dev_for_srv_chg (BD_ADDR bda)
{
tGATTS_SRV_CHG *p_buf;
tGATTS_SRV_CHG_REQ req;
tGATTS_SRV_CHG srv_chg_clt;
memcpy(srv_chg_clt.bda, bda, BD_ADDR_LEN);
srv_chg_clt.srv_changed = FALSE;
if ((p_buf = gatt_add_srv_chg_clt(&srv_chg_clt)) != NULL)
{
memcpy(req.srv_chg.bda, bda, BD_ADDR_LEN);
req.srv_chg.srv_changed = FALSE;
if (gatt_cb.cb_info.p_srv_chg_callback)
(*gatt_cb.cb_info.p_srv_chg_callback)(GATTS_SRV_CHG_CMD_ADD_CLIENT, &req, NULL);
}
}
/*******************************************************************************
**
** Function gatt_send_srv_chg_ind
**
** Description This function is called to send a service chnaged indication to
** the specified bd address
**
** Returns void
**
*******************************************************************************/
void gatt_send_srv_chg_ind (BD_ADDR peer_bda)
{
UINT8 handle_range[GATT_SIZE_OF_SRV_CHG_HNDL_RANGE];
UINT8 *p = handle_range;
UINT16 conn_id;
GATT_TRACE_DEBUG0("gatt_send_srv_chg_ind");
if (gatt_cb.handle_of_h_r)
{
if ((conn_id = gatt_profile_find_conn_id_by_bd_addr(peer_bda)) != GATT_INVALID_CONN_ID)
{
UINT16_TO_STREAM (p, 1);
UINT16_TO_STREAM (p, 0xFFFF);
GATTS_HandleValueIndication (conn_id,
gatt_cb.handle_of_h_r,
GATT_SIZE_OF_SRV_CHG_HNDL_RANGE,
handle_range);
}
else
{
GATT_TRACE_ERROR2("Unable to find conn_id for %08x%04x ",
(peer_bda[0]<<24)+(peer_bda[1]<<16)+(peer_bda[2]<<8)+peer_bda[3],
(peer_bda[4]<<8)+peer_bda[5] );
}
}
}
/*******************************************************************************
**
** Function gatt_chk_srv_chg
**
** Description Check sending service chnaged Indication is required or not
** if required then send the Indication
**
** Returns void
**
*******************************************************************************/
void gatt_chk_srv_chg(tGATTS_SRV_CHG *p_srv_chg_clt)
{
GATT_TRACE_DEBUG1("gatt_chk_srv_chg srv_changed=%d", p_srv_chg_clt->srv_changed );
if (p_srv_chg_clt->srv_changed)
{
gatt_send_srv_chg_ind(p_srv_chg_clt->bda);
}
}
/*******************************************************************************
**
** Function gatt_init_srv_chg
**
** Description This function is used to initialize the service changed
** attribute value
**
** Returns void
**
*******************************************************************************/
void gatt_init_srv_chg (void)
{
tGATTS_SRV_CHG_REQ req;
tGATTS_SRV_CHG_RSP rsp;
BOOLEAN status;
UINT8 num_clients,i;
tGATTS_SRV_CHG srv_chg_clt;
GATT_TRACE_DEBUG0("gatt_init_srv_chg");
if (gatt_cb.cb_info.p_srv_chg_callback)
{
status = (*gatt_cb.cb_info.p_srv_chg_callback)(GATTS_SRV_CHG_CMD_READ_NUM_CLENTS, NULL, &rsp);
if (status && rsp.num_clients)
{
GATT_TRACE_DEBUG1("gatt_init_srv_chg num_srv_chg_clt_clients=%d", rsp.num_clients);
num_clients = rsp.num_clients;
i = 1; /* use one based index */
while ((i <= num_clients) && status)
{
req.client_read_index = i;
if ((status = (*gatt_cb.cb_info.p_srv_chg_callback)(GATTS_SRV_CHG_CMD_READ_CLENT, &req, &rsp)) == TRUE)
{
memcpy(&srv_chg_clt, &rsp.srv_chg ,sizeof(tGATTS_SRV_CHG));
if (gatt_add_srv_chg_clt(&srv_chg_clt) == NULL)
{
GATT_TRACE_ERROR0("Unable to add a service change client");
status = FALSE;
}
}
i++;
}
}
}
else
{
GATT_TRACE_DEBUG0("gatt_init_srv_chg callback not registered yet");
}
}
/*******************************************************************************
**
** Function gatt_proc_srv_chg
**
** Description This function is process the service changed request
**
** Returns void
**
*******************************************************************************/
void gatt_proc_srv_chg (void)
{
UINT8 start_idx, found_idx;
BD_ADDR bda;
BOOLEAN srv_chg_ind_pending=FALSE;
tGATT_TCB *p_tcb;
GATT_TRACE_DEBUG0 ("gatt_proc_srv_chg");
if (gatt_cb.cb_info.p_srv_chg_callback && gatt_cb.handle_of_h_r)
{
gatt_set_srv_chg();
start_idx =0;
while (gatt_find_the_connected_bda(start_idx, bda, &found_idx))
{
p_tcb = &gatt_cb.tcb[found_idx];;
srv_chg_ind_pending = gatt_is_srv_chg_ind_pending(p_tcb);
if (!srv_chg_ind_pending)
{
gatt_send_srv_chg_ind(bda);
}
else
{
GATT_TRACE_DEBUG0 ("discard srv chg - already has one in the queue");
}
start_idx = ++found_idx;
}
}
}
/*******************************************************************************
**
** Function gatt_set_ch_state
**
** Description This function set the ch_state in tcb
**
** Returns none
**
*******************************************************************************/
void gatt_set_ch_state(tGATT_TCB *p_tcb, tGATT_CH_STATE ch_state)
{
if (p_tcb)
{
GATT_TRACE_DEBUG2 ("gatt_set_ch_state: old=%d new=%d", p_tcb->ch_state, ch_state);
p_tcb->ch_state = ch_state;
}
}
/*******************************************************************************
**
** Function gatt_get_ch_state
**
** Description This function get the ch_state in tcb
**
** Returns none
**
*******************************************************************************/
tGATT_CH_STATE gatt_get_ch_state(tGATT_TCB *p_tcb)
{
tGATT_CH_STATE ch_state = GATT_CH_CLOSE;
if (p_tcb)
{
GATT_TRACE_DEBUG1 ("gatt_get_ch_state: ch_state=%d", p_tcb->ch_state);
ch_state = p_tcb->ch_state;
}
return ch_state;
}
#endif /* BLE_INCLUDED */