/******************************************************************************
*
* Copyright (C) 1999-2012 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 functions for BLE controller based privacy.
*
******************************************************************************/
#include <string.h>
#include "bt_target.h"
#if (BLE_INCLUDED == TRUE && BLE_PRIVACY_SPT == TRUE)
#include "bt_types.h"
#include "hcimsgs.h"
#include "btu.h"
#include "vendor_hcidefs.h"
#include "btm_int.h"
#include "device/include/controller.h"
/* RPA offload VSC specifics */
#define BTM_BLE_META_IRK_ENABLE 0x01
#define BTM_BLE_META_ADD_IRK_ENTRY 0x02
#define BTM_BLE_META_REMOVE_IRK_ENTRY 0x03
#define BTM_BLE_META_CLEAR_IRK_LIST 0x04
#define BTM_BLE_META_READ_IRK_ENTRY 0x05
#define BTM_BLE_META_CS_RESOLVE_ADDR 0x00000001
#define BTM_BLE_IRK_ENABLE_LEN 2
#define BTM_BLE_META_ADD_IRK_LEN 24
#define BTM_BLE_META_REMOVE_IRK_LEN 8
#define BTM_BLE_META_CLEAR_IRK_LEN 1
#define BTM_BLE_META_READ_IRK_LEN 2
#define BTM_BLE_META_ADD_WL_ATTR_LEN 9
/*******************************************************************************
** Functions implemented controller based privacy using Resolving List
*******************************************************************************/
/*******************************************************************************
**
** Function btm_ble_enq_resolving_list_pending
**
** Description add target address into resolving pending operation queue
**
** Parameters target_bda: target device address
** add_entry: TRUE for add entry, FALSE for remove entry
**
** Returns void
**
*******************************************************************************/
void btm_ble_enq_resolving_list_pending(BD_ADDR pseudo_bda, UINT8 op_code)
{
tBTM_BLE_RESOLVE_Q *p_q = &btm_cb.ble_ctr_cb.resolving_list_pend_q;
memcpy(p_q->resolve_q_random_pseudo[p_q->q_next], pseudo_bda, BD_ADDR_LEN);
p_q->resolve_q_action[p_q->q_next] = op_code;
p_q->q_next ++;
p_q->q_next %= controller_get_interface()->get_ble_resolving_list_max_size();
}
/*******************************************************************************
**
** Function btm_ble_brcm_find_resolving_pending_entry
**
** Description check to see if the action is in pending list
**
** Parameters TRUE: action pending;
** FALSE: new action
**
** Returns void
**
*******************************************************************************/
BOOLEAN btm_ble_brcm_find_resolving_pending_entry(BD_ADDR pseudo_addr, UINT8 action)
{
tBTM_BLE_RESOLVE_Q *p_q = &btm_cb.ble_ctr_cb.resolving_list_pend_q;
for (UINT8 i = p_q->q_pending; i != p_q->q_next;)
{
if (memcmp(p_q->resolve_q_random_pseudo[i], pseudo_addr, BD_ADDR_LEN) == 0 &&
action == p_q->resolve_q_action[i])
return TRUE;
i ++;
i %= controller_get_interface()->get_ble_resolving_list_max_size();
}
return FALSE;
}
/*******************************************************************************
**
** Function btm_ble_deq_resolving_pending
**
** Description dequeue target address from resolving pending operation queue
**
** Parameters pseudo_addr: pseudo_addr device address
**
** Returns void
**
*******************************************************************************/
BOOLEAN btm_ble_deq_resolving_pending(BD_ADDR pseudo_addr)
{
tBTM_BLE_RESOLVE_Q *p_q = &btm_cb.ble_ctr_cb.resolving_list_pend_q;
if (p_q->q_next != p_q->q_pending)
{
memcpy(pseudo_addr, p_q->resolve_q_random_pseudo[p_q->q_pending], BD_ADDR_LEN);
memset(p_q->resolve_q_random_pseudo[p_q->q_pending], 0, BD_ADDR_LEN);
p_q->q_pending ++;
p_q->q_pending %= controller_get_interface()->get_ble_resolving_list_max_size();
return TRUE;
}
return FALSE;
}
/*******************************************************************************
**
** Function btm_ble_clear_irk_index
**
** Description clear IRK list index mask for availability
**
** Returns none
**
*******************************************************************************/
void btm_ble_clear_irk_index(UINT8 index)
{
UINT8 byte;
UINT8 bit;
if (index < controller_get_interface()->get_ble_resolving_list_max_size())
{
byte = index / 8;
bit = index % 8;
btm_cb.ble_ctr_cb.irk_list_mask[byte] &= (~(1 << bit));
}
}
/*******************************************************************************
**
** Function btm_ble_find_irk_index
**
** Description find the first available IRK list index
**
** Returns index from 0 ~ max (127 default)
**
*******************************************************************************/
UINT8 btm_ble_find_irk_index(void)
{
UINT8 i = 0;
UINT8 byte;
UINT8 bit;
while (i < controller_get_interface()->get_ble_resolving_list_max_size())
{
byte = i / 8;
bit = i % 8;
if ((btm_cb.ble_ctr_cb.irk_list_mask[byte] & (1 << bit)) == 0)
{
btm_cb.ble_ctr_cb.irk_list_mask[byte] |= (1 << bit);
return i;
}
i++;
}
BTM_TRACE_ERROR ("%s failed, list full", __func__);
return i;
}
/*******************************************************************************
**
** Function btm_ble_update_resolving_list
**
** Description update resolving list entry in host maintained record
**
** Returns void
**
*******************************************************************************/
void btm_ble_update_resolving_list(BD_ADDR pseudo_bda, BOOLEAN add)
{
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev(pseudo_bda);
if (p_dev_rec == NULL)
return;
if (add)
{
p_dev_rec->ble.in_controller_list |= BTM_RESOLVING_LIST_BIT;
if (!controller_get_interface()->supports_ble_privacy())
p_dev_rec->ble.resolving_list_index = btm_ble_find_irk_index();
}
else
{
p_dev_rec->ble.in_controller_list &= ~BTM_RESOLVING_LIST_BIT;
if (!controller_get_interface()->supports_ble_privacy())
{
/* clear IRK list index mask */
btm_ble_clear_irk_index(p_dev_rec->ble.resolving_list_index);
p_dev_rec->ble.resolving_list_index = 0;
}
}
}
/*******************************************************************************
**
** Function btm_ble_clear_resolving_list_complete
**
** Description This function is called when command complete for
** clear resolving list
**
** Returns void
**
*******************************************************************************/
void btm_ble_clear_resolving_list_complete(UINT8 *p, UINT16 evt_len)
{
UINT8 status = 0;
STREAM_TO_UINT8(status, p);
BTM_TRACE_DEBUG("%s status=%d", __func__, status);
if (status == HCI_SUCCESS)
{
if (evt_len >= 3)
{
/* VSC complete has one extra byte for op code and list size, skip it here */
p ++;
/* updated the available list size, and current list size */
uint8_t irk_list_sz_max = 0;
STREAM_TO_UINT8(irk_list_sz_max, p);
if (controller_get_interface()->get_ble_resolving_list_max_size() == 0)
btm_ble_resolving_list_init(irk_list_sz_max);
uint8_t irk_mask_size = (irk_list_sz_max % 8) ?
(irk_list_sz_max / 8 + 1) : (irk_list_sz_max / 8);
memset(btm_cb.ble_ctr_cb.irk_list_mask, 0, irk_mask_size);
}
btm_cb.ble_ctr_cb.resolving_list_avail_size =
controller_get_interface()->get_ble_resolving_list_max_size();
BTM_TRACE_DEBUG("%s resolving_list_avail_size=%d",
__func__, btm_cb.ble_ctr_cb.resolving_list_avail_size);
for (UINT8 i = 0; i < BTM_SEC_MAX_DEVICE_RECORDS; ++i)
btm_cb.sec_dev_rec[i].ble.in_controller_list &= ~BTM_RESOLVING_LIST_BIT;
}
}
/*******************************************************************************
**
** Function btm_ble_add_resolving_list_entry_complete
**
** Description This function is called when command complete for
** add resolving list entry
**
** Returns void
**
*******************************************************************************/
void btm_ble_add_resolving_list_entry_complete(UINT8 *p, UINT16 evt_len)
{
UINT8 status;
STREAM_TO_UINT8(status, p);
BTM_TRACE_DEBUG("%s status = %d", __func__, status);
BD_ADDR pseudo_bda;
if (!btm_ble_deq_resolving_pending(pseudo_bda))
{
BTM_TRACE_DEBUG("no pending resolving list operation");
return;
}
if (status == HCI_SUCCESS)
{
/* privacy 1.2 command complete does not have these extra byte */
if (evt_len > 2)
{
/* VSC complete has one extra byte for op code, skip it here */
p ++;
STREAM_TO_UINT8(btm_cb.ble_ctr_cb.resolving_list_avail_size, p);
}
else
btm_cb.ble_ctr_cb.resolving_list_avail_size --;
}
else if (status == HCI_ERR_MEMORY_FULL) /* BT_ERROR_CODE_MEMORY_CAPACITY_EXCEEDED */
{
btm_cb.ble_ctr_cb.resolving_list_avail_size = 0;
BTM_TRACE_DEBUG("%s Resolving list Full ", __func__);
}
}
/*******************************************************************************
**
** Function btm_ble_remove_resolving_list_entry_complete
**
** Description This function is called when command complete for
** remove resolving list entry
**
** Returns void
**
*******************************************************************************/
void btm_ble_remove_resolving_list_entry_complete(UINT8 *p, UINT16 evt_len)
{
BD_ADDR pseudo_bda;
UINT8 status;
STREAM_TO_UINT8(status, p);
BTM_TRACE_DEBUG("%s status = %d", __func__, status);
if (!btm_ble_deq_resolving_pending(pseudo_bda))
{
BTM_TRACE_ERROR("%s no pending resolving list operation", __func__);
return;
}
if (status == HCI_SUCCESS)
{
/* proprietary: spec does not have these extra bytes */
if (evt_len > 2)
{
p ++; /* skip opcode */
STREAM_TO_UINT8(btm_cb.ble_ctr_cb.resolving_list_avail_size, p);
}
else
btm_cb.ble_ctr_cb.resolving_list_avail_size++;
}
}
/*******************************************************************************
**
** Function btm_ble_read_resolving_list_entry_complete
**
** Description This function is called when command complete for
** remove resolving list entry
**
** Returns void
**
*******************************************************************************/
void btm_ble_read_resolving_list_entry_complete(UINT8 *p, UINT16 evt_len)
{
UINT8 status, rra_type = BTM_BLE_ADDR_PSEUDO;
BD_ADDR rra, pseudo_bda;
STREAM_TO_UINT8 (status, p);
BTM_TRACE_DEBUG("%s status = %d", __func__, status);
if (!btm_ble_deq_resolving_pending(pseudo_bda))
{
BTM_TRACE_ERROR("no pending resolving list operation");
return;
}
if (status == HCI_SUCCESS)
{
/* proprietary spec has extra bytes */
if (evt_len > 8)
{
p += (2 + 16 + 1 + 6); /* skip subcode, index, IRK value, address type, identity addr type */
STREAM_TO_BDADDR(rra, p);
BTM_TRACE_ERROR("%s peer_addr: %02x:%02x:%02x:%02x:%02x:%02x",
__func__, rra[0], rra[1], rra[2], rra[3], rra[4], rra[5]);
}
else
{
STREAM_TO_BDADDR(rra, p);
}
btm_ble_refresh_peer_resolvable_private_addr(pseudo_bda, rra, rra_type);
}
}
/*******************************************************************************
VSC that implement controller based privacy
********************************************************************************/
/*******************************************************************************
**
** Function btm_ble_resolving_list_vsc_op_cmpl
**
** Description IRK operation VSC complete handler
**
** Parameters
**
** Returns void
**
*******************************************************************************/
void btm_ble_resolving_list_vsc_op_cmpl (tBTM_VSC_CMPL *p_params)
{
UINT8 *p = p_params->p_param_buf, op_subcode;
UINT16 evt_len = p_params->param_len;
op_subcode = *(p + 1);
BTM_TRACE_DEBUG("%s op_subcode = %d", __func__, op_subcode);
if (op_subcode == BTM_BLE_META_CLEAR_IRK_LIST)
{
btm_ble_clear_resolving_list_complete(p, evt_len);
}
else if (op_subcode == BTM_BLE_META_ADD_IRK_ENTRY)
{
btm_ble_add_resolving_list_entry_complete(p, evt_len);
}
else if (op_subcode == BTM_BLE_META_REMOVE_IRK_ENTRY)
{
btm_ble_remove_resolving_list_entry_complete(p, evt_len);
}
else if (op_subcode == BTM_BLE_META_READ_IRK_ENTRY)
{
btm_ble_read_resolving_list_entry_complete(p, evt_len);
}
else if (op_subcode == BTM_BLE_META_IRK_ENABLE)
{
/* RPA offloading enable/disabled */
}
}
/*******************************************************************************
**
** Function btm_ble_remove_resolving_list_entry
**
** Description This function to remove an IRK entry from the list
**
** Parameters ble_addr_type: address type
** ble_addr: LE adddress
**
** Returns status
**
*******************************************************************************/
tBTM_STATUS btm_ble_remove_resolving_list_entry(tBTM_SEC_DEV_REC *p_dev_rec)
{
/* if controller does not support RPA offloading or privacy 1.2, skip */
if (controller_get_interface()->get_ble_resolving_list_max_size() == 0)
return BTM_WRONG_MODE;
tBTM_STATUS st = BTM_NO_RESOURCES;
if (controller_get_interface()->supports_ble_privacy())
{
if (btsnd_hcic_ble_rm_device_resolving_list(p_dev_rec->ble.static_addr_type,
p_dev_rec->ble.static_addr))
st = BTM_CMD_STARTED;
}
else
{
UINT8 param[20]= {0};
UINT8 *p = param;
UINT8_TO_STREAM(p, BTM_BLE_META_REMOVE_IRK_ENTRY);
UINT8_TO_STREAM(p, p_dev_rec->ble.static_addr_type);
BDADDR_TO_STREAM(p, p_dev_rec->ble.static_addr);
st = BTM_VendorSpecificCommand(HCI_VENDOR_BLE_RPA_VSC,
BTM_BLE_META_REMOVE_IRK_LEN,
param,
btm_ble_resolving_list_vsc_op_cmpl);
}
if (st == BTM_CMD_STARTED)
btm_ble_enq_resolving_list_pending( p_dev_rec->bd_addr, BTM_BLE_META_REMOVE_IRK_ENTRY);
return st;
}
/*******************************************************************************
**
** Function btm_ble_clear_resolving_list
**
** Description This function clears the resolving list
**
** Parameters None.
**
** Returns status
**
*******************************************************************************/
tBTM_STATUS btm_ble_clear_resolving_list(void)
{
tBTM_STATUS st = BTM_NO_RESOURCES;
if (controller_get_interface()->supports_ble_privacy())
{
if (btsnd_hcic_ble_clear_resolving_list())
st = BTM_SUCCESS;
}
else
{
UINT8 param[20] = {0};
UINT8 *p = param;
UINT8_TO_STREAM(p, BTM_BLE_META_CLEAR_IRK_LIST);
st = BTM_VendorSpecificCommand (HCI_VENDOR_BLE_RPA_VSC,
BTM_BLE_META_CLEAR_IRK_LEN,
param,
btm_ble_resolving_list_vsc_op_cmpl);
}
return st;
}
/*******************************************************************************
**
** Function btm_ble_read_resolving_list_entry
**
** Description This function read an IRK entry by index
**
** Parameters entry index.
**
** Returns status
**
*******************************************************************************/
tBTM_STATUS btm_ble_read_resolving_list_entry(tBTM_SEC_DEV_REC *p_dev_rec)
{
tBTM_STATUS st = BTM_NO_RESOURCES;
if (!(p_dev_rec->ble.in_controller_list & BTM_RESOLVING_LIST_BIT))
return BTM_WRONG_MODE;
if (controller_get_interface()->supports_ble_privacy())
{
if (btsnd_hcic_ble_read_resolvable_addr_peer(p_dev_rec->ble.static_addr_type,
p_dev_rec->ble.static_addr))
st = BTM_CMD_STARTED;
}
else
{
UINT8 param[20] = {0};
UINT8 *p = param;
UINT8_TO_STREAM(p, BTM_BLE_META_READ_IRK_ENTRY);
UINT8_TO_STREAM(p, p_dev_rec->ble.resolving_list_index);
st = BTM_VendorSpecificCommand (HCI_VENDOR_BLE_RPA_VSC,
BTM_BLE_META_READ_IRK_LEN,
param,
btm_ble_resolving_list_vsc_op_cmpl);
}
if (st == BTM_CMD_STARTED)
btm_ble_enq_resolving_list_pending(p_dev_rec->bd_addr,
BTM_BLE_META_READ_IRK_ENTRY);
return st;
}
/*******************************************************************************
**
** Function btm_ble_suspend_resolving_list_activity
**
** Description This function suspends all resolving list activity, including
** scan, initiating, and advertising, if resolving list is being
** enabled.
**
** Parameters
**
** Returns TRUE if suspended; FALSE otherwise
**
*******************************************************************************/
BOOLEAN btm_ble_suspend_resolving_list_activity(void)
{
tBTM_BLE_CB *p_ble_cb = &btm_cb.ble_ctr_cb;
/* if resolving list is not enabled, do not need to terminate any activity */
/* if asking for stop all activity */
/* if already suspended */
if (p_ble_cb->suspended_rl_state != BTM_BLE_RL_IDLE)
return TRUE;
/* direct connection active, wait until it completed */
if (btm_ble_get_conn_st() == BLE_DIR_CONN)
{
BTM_TRACE_ERROR("resolving list can not be edited, EnQ now");
return FALSE;
}
p_ble_cb->suspended_rl_state = BTM_BLE_RL_IDLE;
if (p_ble_cb->inq_var.adv_mode == BTM_BLE_ADV_ENABLE)
{
btm_ble_stop_adv();
p_ble_cb->suspended_rl_state |= BTM_BLE_RL_ADV;
}
if (BTM_BLE_IS_SCAN_ACTIVE(p_ble_cb->scan_activity))
{
btm_ble_stop_scan();
p_ble_cb->suspended_rl_state |= BTM_BLE_RL_SCAN;
}
if (btm_ble_suspend_bg_conn())
p_ble_cb->suspended_rl_state |= BTM_BLE_RL_INIT;
return TRUE;
}
/*******************************************************************************
**
** Function btm_ble_resume_resolving_list_activity
**
** Description This function resumes the resolving list activity, including
** scanning, initiating, and advertising, if any of these
** activities has been suspended earlier.
**
** Returns none
**
*******************************************************************************/
void btm_ble_resume_resolving_list_activity(void)
{
tBTM_BLE_CB *p_ble_cb = &btm_cb.ble_ctr_cb;
if (p_ble_cb->suspended_rl_state & BTM_BLE_RL_ADV)
btm_ble_start_adv();
if (p_ble_cb->suspended_rl_state & BTM_BLE_RL_SCAN)
btm_ble_start_scan();
if (p_ble_cb->suspended_rl_state & BTM_BLE_RL_INIT)
btm_ble_resume_bg_conn();
p_ble_cb->suspended_rl_state = BTM_BLE_RL_IDLE;
}
/*******************************************************************************
**
** Function btm_ble_vendor_enable_irk_feature
**
** Description This function is called to enable or disable the RRA
** offloading feature.
**
** Parameters enable: enable or disable the RRA offloading feature
**
** Returns BTM_SUCCESS if successful
**
*******************************************************************************/
tBTM_STATUS btm_ble_vendor_enable_irk_feature(BOOLEAN enable)
{
UINT8 param[20], *p;
tBTM_STATUS st = BTM_MODE_UNSUPPORTED;
p = param;
memset(param, 0, 20);
/* select feature based on control block settings */
UINT8_TO_STREAM(p, BTM_BLE_META_IRK_ENABLE);
UINT8_TO_STREAM(p, enable ? 0x01 : 0x00);
st = BTM_VendorSpecificCommand (HCI_VENDOR_BLE_RPA_VSC, BTM_BLE_IRK_ENABLE_LEN,
param, btm_ble_resolving_list_vsc_op_cmpl);
return st;
}
/*******************************************************************************
**
** Function btm_ble_exe_disable_resolving_list
**
** Description execute resolving list disable
**
** Returns none
**
*******************************************************************************/
BOOLEAN btm_ble_exe_disable_resolving_list(void)
{
if (!btm_ble_suspend_resolving_list_activity())
return FALSE;
if (!controller_get_interface()->supports_ble_privacy())
btm_ble_vendor_enable_irk_feature(FALSE);
else
btsnd_hcic_ble_set_addr_resolution_enable(FALSE);
return TRUE;
}
/*******************************************************************************
**
** Function btm_ble_exe_enable_resolving_list
**
** Description enable LE resolve address list
**
** Returns none
**
*******************************************************************************/
void btm_ble_exe_enable_resolving_list(void)
{
if (!btm_ble_suspend_resolving_list_activity())
return;
if (!controller_get_interface()->supports_ble_privacy())
btm_ble_vendor_enable_irk_feature(TRUE);
else
btsnd_hcic_ble_set_addr_resolution_enable(TRUE);
}
/*******************************************************************************
**
** Function btm_ble_disable_resolving_list
**
** Description Disable LE Address resolution
**
** Returns none
**
*******************************************************************************/
BOOLEAN btm_ble_disable_resolving_list(UINT8 rl_mask, BOOLEAN to_resume )
{
UINT8 rl_state = btm_cb.ble_ctr_cb.rl_state;
/* if controller does not support RPA offloading or privacy 1.2, skip */
if (controller_get_interface()->get_ble_resolving_list_max_size()== 0)
return FALSE;
btm_cb.ble_ctr_cb.rl_state &= ~rl_mask;
if (rl_state != BTM_BLE_RL_IDLE && btm_cb.ble_ctr_cb.rl_state == BTM_BLE_RL_IDLE)
{
if (btm_ble_exe_disable_resolving_list())
{
if (to_resume)
btm_ble_resume_resolving_list_activity();
return TRUE;
}
else
return FALSE;
}
return TRUE;
}
/*******************************************************************************
**
** Function btm_ble_resolving_list_load_dev
**
** Description This function add a device which is using RPA into white list
**
** Parameters pointer to device security record
**
** Returns TRUE if device added, otherwise falase.
**
*******************************************************************************/
BOOLEAN btm_ble_resolving_list_load_dev(tBTM_SEC_DEV_REC *p_dev_rec)
{
BOOLEAN rt = FALSE;
UINT8 rl_mask = btm_cb.ble_ctr_cb.rl_state;
BTM_TRACE_DEBUG("%s btm_cb.ble_ctr_cb.privacy_mode = %d", __func__,
btm_cb.ble_ctr_cb.privacy_mode);
/* if controller does not support RPA offloading or privacy 1.2, skip */
if (controller_get_interface()->get_ble_resolving_list_max_size() == 0)
return FALSE;
BTM_TRACE_DEBUG("%s btm_cb.ble_ctr_cb.privacy_mode = %d",
__func__, btm_cb.ble_ctr_cb.privacy_mode);
/* only add RPA enabled device into resolving list */
if (p_dev_rec != NULL && /* RPA is being used and PID is known */
(p_dev_rec->sec_flags & BTM_SEC_IN_USE) != 0 &&
((p_dev_rec->ble.key_type & BTM_LE_KEY_PID) != 0 ||
(p_dev_rec->ble.key_type & BTM_LE_KEY_LID) != 0))
{
if (!(p_dev_rec->ble.in_controller_list & BTM_RESOLVING_LIST_BIT) &&
btm_ble_brcm_find_resolving_pending_entry(p_dev_rec->bd_addr,
BTM_BLE_META_ADD_IRK_ENTRY) == FALSE)
{
if (btm_cb.ble_ctr_cb.resolving_list_avail_size > 0)
{
if (rl_mask)
{
if (!btm_ble_disable_resolving_list (rl_mask, FALSE))
return FALSE;
}
btm_ble_update_resolving_list(p_dev_rec->bd_addr, TRUE);
if (controller_get_interface()->supports_ble_privacy())
{
BD_ADDR dummy_bda = {0};
UINT8 *peer_irk = p_dev_rec->ble.keys.irk;
UINT8 *local_irk = btm_cb.devcb.id_keys.irk;
if (memcmp(p_dev_rec->ble.static_addr, dummy_bda, BD_ADDR_LEN) == 0)
{
memcpy(p_dev_rec->ble.static_addr, p_dev_rec->bd_addr, BD_ADDR_LEN);
p_dev_rec->ble.static_addr_type = p_dev_rec->ble.ble_addr_type;
}
BTM_TRACE_DEBUG("%s:adding device to controller resolving list", __func__);
// use identical IRK for now
rt = btsnd_hcic_ble_add_device_resolving_list(p_dev_rec->ble.static_addr_type,
p_dev_rec->ble.static_addr, peer_irk, local_irk);
}
else
{
UINT8 param[40] = {0};
UINT8 *p = param;
UINT8_TO_STREAM(p, BTM_BLE_META_ADD_IRK_ENTRY);
ARRAY_TO_STREAM(p, p_dev_rec->ble.keys.irk, BT_OCTET16_LEN);
UINT8_TO_STREAM(p, p_dev_rec->ble.static_addr_type);
BDADDR_TO_STREAM(p,p_dev_rec->ble.static_addr);
if (BTM_VendorSpecificCommand (HCI_VENDOR_BLE_RPA_VSC,
BTM_BLE_META_ADD_IRK_LEN,
param,
btm_ble_resolving_list_vsc_op_cmpl)
== BTM_CMD_STARTED)
rt = TRUE;
}
if (rt)
btm_ble_enq_resolving_list_pending(p_dev_rec->bd_addr,
BTM_BLE_META_ADD_IRK_ENTRY);
/* if resolving list has been turned on, re-enable it */
if (rl_mask)
btm_ble_enable_resolving_list(rl_mask);
else
btm_ble_enable_resolving_list(BTM_BLE_RL_INIT);
}
}
else
{
BTM_TRACE_ERROR("Device already in Resolving list");
rt = TRUE;
}
}
else
{
BTM_TRACE_DEBUG("Device not a RPA enabled device");
}
return rt;
}
/*******************************************************************************
**
** Function btm_ble_resolving_list_remove_dev
**
** Description This function removes the device from resolving list
**
** Parameters
**
** Returns status
**
*******************************************************************************/
void btm_ble_resolving_list_remove_dev(tBTM_SEC_DEV_REC *p_dev_rec)
{
UINT8 rl_mask = btm_cb.ble_ctr_cb.rl_state;
BTM_TRACE_EVENT ("%s", __func__);
if (rl_mask)
{
if (!btm_ble_disable_resolving_list (rl_mask, FALSE))
return;
}
if ((p_dev_rec->ble.in_controller_list & BTM_RESOLVING_LIST_BIT) &&
btm_ble_brcm_find_resolving_pending_entry(p_dev_rec->bd_addr,
BTM_BLE_META_REMOVE_IRK_ENTRY) == FALSE)
{
btm_ble_update_resolving_list( p_dev_rec->bd_addr, FALSE);
btm_ble_remove_resolving_list_entry(p_dev_rec);
}
else
{
BTM_TRACE_DEBUG("Device not in resolving list");
}
/* if resolving list has been turned on, re-enable it */
if (rl_mask)
btm_ble_enable_resolving_list(rl_mask);
}
/*******************************************************************************
**
** Function btm_ble_enable_resolving_list
**
** Description enable LE resolve address list
**
** Returns none
**
*******************************************************************************/
void btm_ble_enable_resolving_list(UINT8 rl_mask)
{
UINT8 rl_state = btm_cb.ble_ctr_cb.rl_state;
btm_cb.ble_ctr_cb.rl_state |= rl_mask;
if (rl_state == BTM_BLE_RL_IDLE &&
btm_cb.ble_ctr_cb.rl_state != BTM_BLE_RL_IDLE &&
controller_get_interface()->get_ble_resolving_list_max_size() != 0)
{
btm_ble_exe_enable_resolving_list();
btm_ble_resume_resolving_list_activity();
}
}
/*******************************************************************************
**
** Function btm_ble_resolving_list_empty
**
** Description check to see if resoving list is empty or not
**
** Returns TRUE: empty; FALSE non-empty
**
*******************************************************************************/
BOOLEAN btm_ble_resolving_list_empty(void)
{
return (controller_get_interface()->get_ble_resolving_list_max_size() ==
btm_cb.ble_ctr_cb.resolving_list_avail_size);
}
/*******************************************************************************
**
** Function btm_ble_enable_resolving_list_for_platform
**
** Description enable/disable resolving list feature depending on if any
** resolving list is empty and whitelist is involoved in the
** operation.
**
** Returns none
**
*******************************************************************************/
void btm_ble_enable_resolving_list_for_platform (UINT8 rl_mask)
{
/* if controller does not support, skip */
if (controller_get_interface()->get_ble_resolving_list_max_size() == 0)
return;
if (btm_cb.ble_ctr_cb.wl_state == BTM_BLE_WL_IDLE)
{
if (controller_get_interface()->get_ble_resolving_list_max_size() >
btm_cb.ble_ctr_cb.resolving_list_avail_size)
btm_ble_enable_resolving_list(rl_mask);
else
btm_ble_disable_resolving_list(rl_mask, TRUE);
return;
}
tBTM_SEC_DEV_REC *p_dev = &btm_cb.sec_dev_rec[0];
for (UINT8 i = 0; i < BTM_SEC_MAX_DEVICE_RECORDS; i ++, p_dev ++)
{
if ((p_dev->ble.in_controller_list & BTM_RESOLVING_LIST_BIT) &&
(p_dev->ble.in_controller_list & BTM_WHITE_LIST_BIT))
{
btm_ble_enable_resolving_list(rl_mask);
return;
}
}
btm_ble_disable_resolving_list(rl_mask, TRUE);
}
/*******************************************************************************
**
** Function btm_ble_resolving_list_init
**
** Description Initialize resolving list in host stack
**
** Parameters Max resolving list size
**
** Returns void
**
*******************************************************************************/
void btm_ble_resolving_list_init(UINT8 max_irk_list_sz)
{
tBTM_BLE_RESOLVE_Q *p_q = &btm_cb.ble_ctr_cb.resolving_list_pend_q;
UINT8 irk_mask_size = (max_irk_list_sz % 8) ?
(max_irk_list_sz/8 + 1) : (max_irk_list_sz/8);
if (max_irk_list_sz > 0)
{
p_q->resolve_q_random_pseudo = (BD_ADDR *)GKI_getbuf(sizeof(BD_ADDR) * max_irk_list_sz);
p_q->resolve_q_action = (UINT8 *)GKI_getbuf(max_irk_list_sz);
/* RPA offloading feature */
if (btm_cb.ble_ctr_cb.irk_list_mask == NULL)
btm_cb.ble_ctr_cb.irk_list_mask = (UINT8 *)GKI_getbuf(irk_mask_size);
BTM_TRACE_DEBUG ("%s max_irk_list_sz = %d", __func__, max_irk_list_sz);
}
controller_get_interface()->set_ble_resolving_list_max_size(max_irk_list_sz);
btm_ble_clear_resolving_list();
btm_cb.ble_ctr_cb.resolving_list_avail_size = max_irk_list_sz;
}
/*******************************************************************************
**
** Function btm_ble_resolving_list_cleanup
**
** Description Cleanup resolving list dynamic memory
**
** Parameters
**
** Returns void
**
*******************************************************************************/
void btm_ble_resolving_list_cleanup(void)
{
tBTM_BLE_RESOLVE_Q *p_q = &btm_cb.ble_ctr_cb.resolving_list_pend_q;
if (p_q->resolve_q_random_pseudo)
GKI_freebuf(p_q->resolve_q_random_pseudo);
if (p_q->resolve_q_action)
GKI_freebuf(p_q->resolve_q_action);
controller_get_interface()->set_ble_resolving_list_max_size(0);
if (btm_cb.ble_ctr_cb.irk_list_mask)
GKI_freebuf(btm_cb.ble_ctr_cb.irk_list_mask);
btm_cb.ble_ctr_cb.irk_list_mask = NULL;
}
#endif