/****************************************************************************** * * 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) /********************************************************************************/ /* 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 (BOOLEAN is_bg_conn, 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 = TRUE; tBT_DEVICE_TYPE dev_type; tBLE_ADDR_TYPE addr_type; BTM_ReadDevInfo(rem_bda, &dev_type, &addr_type); gatt_set_ch_state(p_tcb, GATT_CH_CONN); if (dev_type == BT_DEVICE_TYPE_BLE) { 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 = FALSE; } 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; iapp_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; iapp_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; GATT_TRACE_DEBUG0("gatt_act_connect"); if ((p_tcb = gatt_find_tcb_by_addr(bd_addr)) != NULL) { ret = TRUE; if(gatt_get_ch_state(p_tcb) == 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; BOOLEAN is_bg_conn = FALSE; 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(FALSE, p_tcb); } else /* there was an exisiting link, ignore the callback */ { GATT_TRACE_ERROR0("connection already up, ignore it"); return; } } /* 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; if (L2CA_GetBleConnRole(p_tcb->peer_bda)== HCI_ROLE_MASTER) { is_bg_conn = TRUE; } gatt_send_conn_cback (is_bg_conn, 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, result); } } 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(FALSE, 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 < 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)) gatt_add_a_bonded_dev_for_srv_chg(p_tcb->peer_bda); } /* send callback */ gatt_send_conn_cback(FALSE, 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 (btm_sec_is_a_bonded_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 (btm_sec_is_a_bonded_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(BOOLEAN is_bg_conn, tGATT_TCB *p_tcb) { UINT8 i; tGATT_REG *p_reg; tGATT_BG_CONN_DEV *p_bg_dev=NULL; UINT16 conn_id; if (is_bg_conn) 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); } else { GATT_TRACE_DEBUG0("No need to send srv chg "); } } /******************************************************************************* ** ** 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))) { 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 */