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zephyr/subsys/bluetooth/host/hci_core.c
Thomas Ebert Hansen 5e1de1a983 Bluetooth: Add support for vendor-specific events 
Add an event handler for HCI vendor-specific events with the
event code BT_HCI_EVT_VENDOR.

A vendor defined callback can be registered to be called when
vendor-Specific events are received in the stack. The callback can then
decode and handle the event; if not the stack will decode and handle
the event.

Signed-off-by: Thomas Ebert Hansen <thoh@oticon.com>
2019-05-20 13:33:36 +02:00

5969 lines
137 KiB
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/* hci_core.c - HCI core Bluetooth handling */
/*
* Copyright (c) 2017 Nordic Semiconductor ASA
* Copyright (c) 2015-2016 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <atomic.h>
#include <misc/util.h>
#include <misc/slist.h>
#include <misc/byteorder.h>
#include <misc/stack.h>
#include <misc/__assert.h>
#include <soc.h>
#include <settings/settings.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/conn.h>
#include <bluetooth/l2cap.h>
#include <bluetooth/hci.h>
#include <bluetooth/hci_vs.h>
#include <bluetooth/hci_driver.h>
#define BT_DBG_ENABLED IS_ENABLED(CONFIG_BT_DEBUG_HCI_CORE)
#define LOG_MODULE_NAME bt_hci_core
#include "common/log.h"
#include "common/rpa.h"
#include "keys.h"
#include "monitor.h"
#include "hci_core.h"
#include "hci_ecc.h"
#include "ecc.h"
#include "conn_internal.h"
#include "l2cap_internal.h"
#include "gatt_internal.h"
#include "smp.h"
#include "crypto.h"
#include "settings.h"
/* Peripheral timeout to initialize Connection Parameter Update procedure */
#define CONN_UPDATE_TIMEOUT K_SECONDS(5)
#define RPA_TIMEOUT K_SECONDS(CONFIG_BT_RPA_TIMEOUT)
#define HCI_CMD_TIMEOUT K_SECONDS(10)
/* Stacks for the threads */
#if !defined(CONFIG_BT_RECV_IS_RX_THREAD)
static struct k_thread rx_thread_data;
static K_THREAD_STACK_DEFINE(rx_thread_stack, CONFIG_BT_RX_STACK_SIZE);
#endif
static struct k_thread tx_thread_data;
static K_THREAD_STACK_DEFINE(tx_thread_stack, CONFIG_BT_HCI_TX_STACK_SIZE);
static void init_work(struct k_work *work);
struct bt_dev bt_dev = {
.init = Z_WORK_INITIALIZER(init_work),
/* Give cmd_sem allowing to send first HCI_Reset cmd, the only
* exception is if the controller requests to wait for an
* initial Command Complete for NOP.
*/
#if !defined(CONFIG_BT_WAIT_NOP)
.ncmd_sem = Z_SEM_INITIALIZER(bt_dev.ncmd_sem, 1, 1),
#else
.ncmd_sem = Z_SEM_INITIALIZER(bt_dev.ncmd_sem, 0, 1),
#endif
.cmd_tx_queue = Z_FIFO_INITIALIZER(bt_dev.cmd_tx_queue),
#if !defined(CONFIG_BT_RECV_IS_RX_THREAD)
.rx_queue = Z_FIFO_INITIALIZER(bt_dev.rx_queue),
#endif
};
static bt_ready_cb_t ready_cb;
static bt_le_scan_cb_t *scan_dev_found_cb;
#if defined(CONFIG_BT_HCI_VS_EVT_USER)
static bt_hci_vnd_evt_cb_t *hci_vnd_evt_cb;
#endif /* CONFIG_BT_HCI_VS_EVT_USER */
#if defined(CONFIG_BT_ECC)
static u8_t pub_key[64];
static struct bt_pub_key_cb *pub_key_cb;
static bt_dh_key_cb_t dh_key_cb;
#endif /* CONFIG_BT_ECC */
#if defined(CONFIG_BT_BREDR)
static bt_br_discovery_cb_t *discovery_cb;
struct bt_br_discovery_result *discovery_results;
static size_t discovery_results_size;
static size_t discovery_results_count;
#endif /* CONFIG_BT_BREDR */
struct cmd_data {
/** HCI status of the command completion */
u8_t status;
/** The command OpCode that the buffer contains */
u16_t opcode;
/** Used by bt_hci_cmd_send_sync. */
struct k_sem *sync;
};
struct acl_data {
/** BT_BUF_ACL_IN */
u8_t type;
/* Index into the bt_conn storage array */
u8_t id;
/** ACL connection handle */
u16_t handle;
};
static struct cmd_data cmd_data[CONFIG_BT_HCI_CMD_COUNT];
#define cmd(buf) (&cmd_data[net_buf_id(buf)])
#define acl(buf) ((struct acl_data *)net_buf_user_data(buf))
/* HCI command buffers. Derive the needed size from BT_BUF_RX_SIZE since
* the same buffer is also used for the response.
*/
#define CMD_BUF_SIZE BT_BUF_RX_SIZE
NET_BUF_POOL_DEFINE(hci_cmd_pool, CONFIG_BT_HCI_CMD_COUNT,
CMD_BUF_SIZE, BT_BUF_USER_DATA_MIN, NULL);
NET_BUF_POOL_DEFINE(hci_rx_pool, CONFIG_BT_RX_BUF_COUNT,
BT_BUF_RX_SIZE, BT_BUF_USER_DATA_MIN, NULL);
struct event_handler {
u8_t event;
u8_t min_len;
void (*handler)(struct net_buf *buf);
};
#define EVENT_HANDLER(_evt, _handler, _min_len) \
{ \
.event = _evt, \
.handler = _handler, \
.min_len = _min_len, \
}
static inline void handle_event(u8_t event, struct net_buf *buf,
const struct event_handler *handlers,
size_t num_handlers)
{
size_t i;
for (i = 0; i < num_handlers; i++) {
const struct event_handler *handler = &handlers[i];
if (handler->event != event) {
continue;
}
if (buf->len < handler->min_len) {
BT_ERR("Too small (%u bytes) event 0x%02x",
buf->len, event);
return;
}
handler->handler(buf);
return;
}
BT_WARN("Unhandled event 0x%02x len %u: %s", event,
buf->len, bt_hex(buf->data, buf->len));
}
#if defined(CONFIG_BT_HCI_ACL_FLOW_CONTROL)
static void report_completed_packet(struct net_buf *buf)
{
struct bt_hci_cp_host_num_completed_packets *cp;
u16_t handle = acl(buf)->handle;
struct bt_hci_handle_count *hc;
struct bt_conn *conn;
net_buf_destroy(buf);
/* Do nothing if controller to host flow control is not supported */
if (!BT_CMD_TEST(bt_dev.supported_commands, 10, 5)) {
return;
}
conn = bt_conn_lookup_id(acl(buf)->id);
if (!conn) {
BT_WARN("Unable to look up conn with id 0x%02x", acl(buf)->id);
return;
}
if (conn->state != BT_CONN_CONNECTED &&
conn->state != BT_CONN_DISCONNECT) {
BT_WARN("Not reporting packet for non-connected conn");
bt_conn_unref(conn);
return;
}
bt_conn_unref(conn);
BT_DBG("Reporting completed packet for handle %u", handle);
buf = bt_hci_cmd_create(BT_HCI_OP_HOST_NUM_COMPLETED_PACKETS,
sizeof(*cp) + sizeof(*hc));
if (!buf) {
BT_ERR("Unable to allocate new HCI command");
return;
}
cp = net_buf_add(buf, sizeof(*cp));
cp->num_handles = sys_cpu_to_le16(1);
hc = net_buf_add(buf, sizeof(*hc));
hc->handle = sys_cpu_to_le16(handle);
hc->count = sys_cpu_to_le16(1);
bt_hci_cmd_send(BT_HCI_OP_HOST_NUM_COMPLETED_PACKETS, buf);
}
#define ACL_IN_SIZE BT_L2CAP_BUF_SIZE(CONFIG_BT_L2CAP_RX_MTU)
NET_BUF_POOL_DEFINE(acl_in_pool, CONFIG_BT_ACL_RX_COUNT, ACL_IN_SIZE,
BT_BUF_USER_DATA_MIN, report_completed_packet);
#endif /* CONFIG_BT_HCI_ACL_FLOW_CONTROL */
struct net_buf *bt_hci_cmd_create(u16_t opcode, u8_t param_len)
{
struct bt_hci_cmd_hdr *hdr;
struct net_buf *buf;
BT_DBG("opcode 0x%04x param_len %u", opcode, param_len);
buf = net_buf_alloc(&hci_cmd_pool, K_FOREVER);
__ASSERT_NO_MSG(buf);
BT_DBG("buf %p", buf);
net_buf_reserve(buf, CONFIG_BT_HCI_RESERVE);
bt_buf_set_type(buf, BT_BUF_CMD);
cmd(buf)->opcode = opcode;
cmd(buf)->sync = NULL;
hdr = net_buf_add(buf, sizeof(*hdr));
hdr->opcode = sys_cpu_to_le16(opcode);
hdr->param_len = param_len;
return buf;
}
int bt_hci_cmd_send(u16_t opcode, struct net_buf *buf)
{
if (!buf) {
buf = bt_hci_cmd_create(opcode, 0);
if (!buf) {
return -ENOBUFS;
}
}
BT_DBG("opcode 0x%04x len %u", opcode, buf->len);
/* Host Number of Completed Packets can ignore the ncmd value
* and does not generate any cmd complete/status events.
*/
if (opcode == BT_HCI_OP_HOST_NUM_COMPLETED_PACKETS) {
int err;
err = bt_send(buf);
if (err) {
BT_ERR("Unable to send to driver (err %d)", err);
net_buf_unref(buf);
}
return err;
}
net_buf_put(&bt_dev.cmd_tx_queue, buf);
return 0;
}
int bt_hci_cmd_send_sync(u16_t opcode, struct net_buf *buf,
struct net_buf **rsp)
{
struct k_sem sync_sem;
int err;
if (!buf) {
buf = bt_hci_cmd_create(opcode, 0);
if (!buf) {
return -ENOBUFS;
}
}
BT_DBG("buf %p opcode 0x%04x len %u", buf, opcode, buf->len);
k_sem_init(&sync_sem, 0, 1);
cmd(buf)->sync = &sync_sem;
/* Make sure the buffer stays around until the command completes */
net_buf_ref(buf);
net_buf_put(&bt_dev.cmd_tx_queue, buf);
err = k_sem_take(&sync_sem, HCI_CMD_TIMEOUT);
__ASSERT(err == 0, "k_sem_take failed with err %d", err);
BT_DBG("opcode 0x%04x status 0x%02x", opcode, cmd(buf)->status);
if (cmd(buf)->status) {
switch (cmd(buf)->status) {
case BT_HCI_ERR_CONN_LIMIT_EXCEEDED:
err = -ECONNREFUSED;
break;
default:
err = -EIO;
break;
}
net_buf_unref(buf);
} else {
err = 0;
if (rsp) {
*rsp = buf;
} else {
net_buf_unref(buf);
}
}
return err;
}
#if defined(CONFIG_BT_OBSERVER) || defined(CONFIG_BT_CONN)
static const bt_addr_le_t *find_id_addr(u8_t id, const bt_addr_le_t *addr)
{
if (IS_ENABLED(CONFIG_BT_SMP)) {
struct bt_keys *keys;
keys = bt_keys_find_irk(id, addr);
if (keys) {
BT_DBG("Identity %s matched RPA %s",
bt_addr_le_str(&keys->addr),
bt_addr_le_str(addr));
return &keys->addr;
}
}
return addr;
}
#endif /* CONFIG_BT_OBSERVER || CONFIG_BT_CONN */
static int set_advertise_enable(bool enable)
{
struct net_buf *buf;
int err;
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_ADV_ENABLE, 1);
if (!buf) {
return -ENOBUFS;
}
if (enable) {
net_buf_add_u8(buf, BT_HCI_LE_ADV_ENABLE);
} else {
net_buf_add_u8(buf, BT_HCI_LE_ADV_DISABLE);
}
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_SET_ADV_ENABLE, buf, NULL);
if (err) {
return err;
}
atomic_set_bit_to(bt_dev.flags, BT_DEV_ADVERTISING, enable);
return 0;
}
static int set_random_address(const bt_addr_t *addr)
{
struct net_buf *buf;
int err;
BT_DBG("%s", bt_addr_str(addr));
/* Do nothing if we already have the right address */
if (!bt_addr_cmp(addr, &bt_dev.random_addr.a)) {
return 0;
}
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_RANDOM_ADDRESS, sizeof(*addr));
if (!buf) {
return -ENOBUFS;
}
net_buf_add_mem(buf, addr, sizeof(*addr));
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_SET_RANDOM_ADDRESS, buf, NULL);
if (err) {
return err;
}
bt_addr_copy(&bt_dev.random_addr.a, addr);
bt_dev.random_addr.type = BT_ADDR_LE_RANDOM;
return 0;
}
#if defined(CONFIG_BT_PRIVACY)
/* this function sets new RPA only if current one is no longer valid */
static int le_set_private_addr(u8_t id)
{
bt_addr_t rpa;
int err;
/* check if RPA is valid */
if (atomic_test_bit(bt_dev.flags, BT_DEV_RPA_VALID)) {
return 0;
}
err = bt_rpa_create(bt_dev.irk[id], &rpa);
if (!err) {
err = set_random_address(&rpa);
if (!err) {
atomic_set_bit(bt_dev.flags, BT_DEV_RPA_VALID);
}
}
/* restart timer even if failed to set new RPA */
k_delayed_work_submit(&bt_dev.rpa_update, RPA_TIMEOUT);
return err;
}
static void rpa_timeout(struct k_work *work)
{
int err_adv = 0, err_scan = 0;
BT_DBG("");
/* Invalidate RPA */
atomic_clear_bit(bt_dev.flags, BT_DEV_RPA_VALID);
/*
* we need to update rpa only if advertising is ongoing, with
* BT_DEV_KEEP_ADVERTISING flag is handled in disconnected event
*/
if (atomic_test_bit(bt_dev.flags, BT_DEV_ADVERTISING)) {
/* make sure new address is used */
set_advertise_enable(false);
err_adv = le_set_private_addr(bt_dev.adv_id);
set_advertise_enable(true);
}
if (atomic_test_bit(bt_dev.flags, BT_DEV_ACTIVE_SCAN)) {
/* TODO do we need to toggle scan? */
err_scan = le_set_private_addr(BT_ID_DEFAULT);
}
/* If both advertising and scanning is active, le_set_private_addr
* will fail. In this case, set back RPA_VALID so that if either of
* advertising or scanning was restarted by application then
* le_set_private_addr in the public API call path will not retry
* set_random_address. This is needed so as to be able to stop and
* restart either of the role by the application after rpa_timeout.
*/
if (err_adv || err_scan) {
atomic_set_bit(bt_dev.flags, BT_DEV_RPA_VALID);
}
}
#else
static int le_set_private_addr(u8_t id)
{
bt_addr_t nrpa;
int err;
err = bt_rand(nrpa.val, sizeof(nrpa.val));
if (err) {
return err;
}
nrpa.val[5] &= 0x3f;
return set_random_address(&nrpa);
}
#endif
#if defined(CONFIG_BT_OBSERVER)
static int set_le_scan_enable(u8_t enable)
{
struct bt_hci_cp_le_set_scan_enable *cp;
struct net_buf *buf;
int err;
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_SCAN_ENABLE, sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
if (enable == BT_HCI_LE_SCAN_ENABLE) {
cp->filter_dup = atomic_test_bit(bt_dev.flags,
BT_DEV_SCAN_FILTER_DUP);
} else {
cp->filter_dup = BT_HCI_LE_SCAN_FILTER_DUP_DISABLE;
}
cp->enable = enable;
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_SET_SCAN_ENABLE, buf, NULL);
if (err) {
return err;
}
atomic_set_bit_to(bt_dev.flags, BT_DEV_SCANNING,
enable == BT_HCI_LE_SCAN_ENABLE);
return 0;
}
#endif /* CONFIG_BT_OBSERVER */
#if defined(CONFIG_BT_CONN)
static void hci_acl(struct net_buf *buf)
{
struct bt_hci_acl_hdr *hdr;
u16_t handle, len;
struct bt_conn *conn;
u8_t flags;
BT_DBG("buf %p", buf);
BT_ASSERT(buf->len >= sizeof(*hdr));
hdr = net_buf_pull_mem(buf, sizeof(*hdr));
len = sys_le16_to_cpu(hdr->len);
handle = sys_le16_to_cpu(hdr->handle);
flags = bt_acl_flags(handle);
acl(buf)->handle = bt_acl_handle(handle);
acl(buf)->id = BT_CONN_ID_INVALID;
BT_DBG("handle %u len %u flags %u", acl(buf)->handle, len, flags);
if (buf->len != len) {
BT_ERR("ACL data length mismatch (%u != %u)", buf->len, len);
net_buf_unref(buf);
return;
}
conn = bt_conn_lookup_handle(acl(buf)->handle);
if (!conn) {
BT_ERR("Unable to find conn for handle %u", acl(buf)->handle);
net_buf_unref(buf);
return;
}
acl(buf)->id = bt_conn_index(conn);
bt_conn_recv(conn, buf, flags);
bt_conn_unref(conn);
}
static void hci_num_completed_packets(struct net_buf *buf)
{
struct bt_hci_evt_num_completed_packets *evt = (void *)buf->data;
int i;
BT_DBG("num_handles %u", evt->num_handles);
for (i = 0; i < evt->num_handles; i++) {
u16_t handle, count;
struct bt_conn *conn;
unsigned int key;
handle = sys_le16_to_cpu(evt->h[i].handle);
count = sys_le16_to_cpu(evt->h[i].count);
BT_DBG("handle %u count %u", handle, count);
key = irq_lock();
conn = bt_conn_lookup_handle(handle);
if (!conn) {
BT_ERR("No connection for handle %u", handle);
irq_unlock(key);
continue;
}
irq_unlock(key);
while (count--) {
sys_snode_t *node;
key = irq_lock();
node = sys_slist_get(&conn->tx_pending);
irq_unlock(key);
if (!node) {
BT_ERR("packets count mismatch");
break;
}
k_fifo_put(&conn->tx_notify, node);
k_sem_give(bt_conn_get_pkts(conn));
}
bt_conn_unref(conn);
}
}
#if defined(CONFIG_BT_CENTRAL)
static int hci_le_create_conn(const struct bt_conn *conn)
{
struct net_buf *buf;
struct bt_hci_cp_le_create_conn *cp;
buf = bt_hci_cmd_create(BT_HCI_OP_LE_CREATE_CONN, sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
(void)memset(cp, 0, sizeof(*cp));
/* Interval == window for continuous scanning */
cp->scan_interval = sys_cpu_to_le16(BT_GAP_SCAN_FAST_INTERVAL);
cp->scan_window = cp->scan_interval;
bt_addr_le_copy(&cp->peer_addr, &conn->le.resp_addr);
cp->own_addr_type = conn->le.init_addr.type;
cp->conn_interval_min = sys_cpu_to_le16(conn->le.interval_min);
cp->conn_interval_max = sys_cpu_to_le16(conn->le.interval_max);
cp->conn_latency = sys_cpu_to_le16(conn->le.latency);
cp->supervision_timeout = sys_cpu_to_le16(conn->le.timeout);
return bt_hci_cmd_send_sync(BT_HCI_OP_LE_CREATE_CONN, buf, NULL);
}
#endif /* CONFIG_BT_CENTRAL */
static void hci_disconn_complete(struct net_buf *buf)
{
struct bt_hci_evt_disconn_complete *evt = (void *)buf->data;
u16_t handle = sys_le16_to_cpu(evt->handle);
struct bt_conn *conn;
BT_DBG("status %u handle %u reason %u", evt->status, handle,
evt->reason);
if (evt->status) {
return;
}
conn = bt_conn_lookup_handle(handle);
if (!conn) {
BT_ERR("Unable to look up conn with handle %u", handle);
goto advertise;
}
conn->err = evt->reason;
/* Check stacks usage */
#if !defined(CONFIG_BT_RECV_IS_RX_THREAD)
STACK_ANALYZE("rx stack", rx_thread_stack);
#endif
STACK_ANALYZE("tx stack", tx_thread_stack);
bt_conn_set_state(conn, BT_CONN_DISCONNECTED);
conn->handle = 0U;
if (conn->type != BT_CONN_TYPE_LE) {
#if defined(CONFIG_BT_BREDR)
if (conn->type == BT_CONN_TYPE_SCO) {
bt_sco_cleanup(conn);
return;
}
/*
* If only for one connection session bond was set, clear keys
* database row for this connection.
*/
if (conn->type == BT_CONN_TYPE_BR &&
atomic_test_and_clear_bit(conn->flags, BT_CONN_BR_NOBOND)) {
bt_keys_link_key_clear(conn->br.link_key);
}
#endif
bt_conn_unref(conn);
return;
}
#if defined(CONFIG_BT_CENTRAL)
if (atomic_test_bit(conn->flags, BT_CONN_AUTO_CONNECT)) {
bt_conn_set_state(conn, BT_CONN_CONNECT_SCAN);
bt_le_scan_update(false);
}
#endif /* CONFIG_BT_CENTRAL */
bt_conn_unref(conn);
advertise:
if (atomic_test_bit(bt_dev.flags, BT_DEV_KEEP_ADVERTISING) &&
!atomic_test_bit(bt_dev.flags, BT_DEV_ADVERTISING)) {
if (IS_ENABLED(CONFIG_BT_PRIVACY) &&
!BT_FEAT_LE_PRIVACY(bt_dev.le.features)) {
le_set_private_addr(bt_dev.adv_id);
}
set_advertise_enable(true);
}
}
static int hci_le_read_remote_features(struct bt_conn *conn)
{
struct bt_hci_cp_le_read_remote_features *cp;
struct net_buf *buf;
buf = bt_hci_cmd_create(BT_HCI_OP_LE_READ_REMOTE_FEATURES,
sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
cp->handle = sys_cpu_to_le16(conn->handle);
bt_hci_cmd_send(BT_HCI_OP_LE_READ_REMOTE_FEATURES, buf);
return 0;
}
/* LE Data Length Change Event is optional so this function just ignore
* error and stack will continue to use default values.
*/
static void hci_le_set_data_len(struct bt_conn *conn)
{
struct bt_hci_rp_le_read_max_data_len *rp;
struct bt_hci_cp_le_set_data_len *cp;
struct net_buf *buf, *rsp;
u16_t tx_octets, tx_time;
int err;
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_READ_MAX_DATA_LEN, NULL, &rsp);
if (err) {
BT_ERR("Failed to read DLE max data len");
return;
}
rp = (void *)rsp->data;
tx_octets = sys_le16_to_cpu(rp->max_tx_octets);
tx_time = sys_le16_to_cpu(rp->max_tx_time);
net_buf_unref(rsp);
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_DATA_LEN, sizeof(*cp));
if (!buf) {
BT_ERR("Failed to create LE Set Data Length Command");
return;
}
cp = net_buf_add(buf, sizeof(*cp));
cp->handle = sys_cpu_to_le16(conn->handle);
cp->tx_octets = sys_cpu_to_le16(tx_octets);
cp->tx_time = sys_cpu_to_le16(tx_time);
err = bt_hci_cmd_send(BT_HCI_OP_LE_SET_DATA_LEN, buf);
if (err) {
BT_ERR("Failed to send LE Set Data Length Command");
}
}
static int hci_le_set_phy(struct bt_conn *conn)
{
struct bt_hci_cp_le_set_phy *cp;
struct net_buf *buf;
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_PHY, sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
cp->handle = sys_cpu_to_le16(conn->handle);
cp->all_phys = 0U;
cp->tx_phys = BT_HCI_LE_PHY_PREFER_2M;
cp->rx_phys = BT_HCI_LE_PHY_PREFER_2M;
cp->phy_opts = BT_HCI_LE_PHY_CODED_ANY;
bt_hci_cmd_send(BT_HCI_OP_LE_SET_PHY, buf);
return 0;
}
static void slave_update_conn_param(struct bt_conn *conn)
{
if (!IS_ENABLED(CONFIG_BT_PERIPHERAL)) {
return;
}
/* don't start timer again on PHY update etc */
if (atomic_test_bit(conn->flags, BT_CONN_SLAVE_PARAM_UPDATE)) {
return;
}
/*
* Core 4.2 Vol 3, Part C, 9.3.12.2
* The Peripheral device should not perform a Connection Parameter
* Update procedure within 5 s after establishing a connection.
*/
k_delayed_work_submit(&conn->le.update_work, CONN_UPDATE_TIMEOUT);
}
#if defined(CONFIG_BT_SMP)
static void update_pending_id(struct bt_keys *keys, void *data)
{
if (keys->flags & BT_KEYS_ID_PENDING_ADD) {
keys->flags &= ~BT_KEYS_ID_PENDING_ADD;
bt_id_add(keys);
return;
}
if (keys->flags & BT_KEYS_ID_PENDING_DEL) {
keys->flags &= ~BT_KEYS_ID_PENDING_DEL;
bt_id_del(keys);
return;
}
}
#endif
static struct bt_conn *find_pending_connect(bt_addr_le_t *peer_addr)
{
struct bt_conn *conn;
/*
* Make lookup to check if there's a connection object in
* CONNECT or DIR_ADV state associated with passed peer LE address.
*/
conn = bt_conn_lookup_state_le(peer_addr, BT_CONN_CONNECT);
if (conn) {
return conn;
}
return bt_conn_lookup_state_le(peer_addr, BT_CONN_CONNECT_DIR_ADV);
}
static void enh_conn_complete(struct bt_hci_evt_le_enh_conn_complete *evt)
{
u16_t handle = sys_le16_to_cpu(evt->handle);
bt_addr_le_t peer_addr, id_addr;
struct bt_conn *conn;
int err;
BT_DBG("status %u handle %u role %u %s", evt->status, handle,
evt->role, bt_addr_le_str(&evt->peer_addr));
#if defined(CONFIG_BT_SMP)
if (atomic_test_and_clear_bit(bt_dev.flags, BT_DEV_ID_PENDING)) {
bt_keys_foreach(BT_KEYS_IRK, update_pending_id, NULL);
}
#endif
if (evt->status) {
/*
* If there was an error we are only interested in pending
* connection. There is no need to check ID address as
* only one connection can be in that state.
*
* Depending on error code address might not be valid anyway.
*/
conn = find_pending_connect(NULL);
if (!conn) {
return;
}
conn->err = evt->status;
if (IS_ENABLED(CONFIG_BT_PERIPHERAL)) {
/*
* Handle advertising timeout after high duty directed
* advertising.
*/
if (conn->err == BT_HCI_ERR_ADV_TIMEOUT) {
atomic_clear_bit(bt_dev.flags,
BT_DEV_ADVERTISING);
bt_conn_set_state(conn, BT_CONN_DISCONNECTED);
goto done;
}
}
if (IS_ENABLED(CONFIG_BT_CENTRAL)) {
/*
* Handle cancellation of outgoing connection attempt.
*/
if (conn->err == BT_HCI_ERR_UNKNOWN_CONN_ID) {
/* We notify before checking autoconnect flag
* as application may choose to change it from
* callback.
*/
bt_conn_set_state(conn, BT_CONN_DISCONNECTED);
/* Check if device is marked for autoconnect. */
if (atomic_test_bit(conn->flags,
BT_CONN_AUTO_CONNECT)) {
bt_conn_set_state(conn,
BT_CONN_CONNECT_SCAN);
}
goto done;
}
}
BT_WARN("Unexpected status 0x%02x", evt->status);
bt_conn_unref(conn);
return;
}
bt_addr_le_copy(&id_addr, &evt->peer_addr);
/* Translate "enhanced" identity address type to normal one */
if (id_addr.type == BT_ADDR_LE_PUBLIC_ID ||
id_addr.type == BT_ADDR_LE_RANDOM_ID) {
id_addr.type -= BT_ADDR_LE_PUBLIC_ID;
bt_addr_copy(&peer_addr.a, &evt->peer_rpa);
peer_addr.type = BT_ADDR_LE_RANDOM;
} else {
bt_addr_le_copy(&peer_addr, &evt->peer_addr);
}
conn = find_pending_connect(&id_addr);
if (evt->role == BT_CONN_ROLE_SLAVE) {
/*
* clear advertising even if we are not able to add connection
* object to keep host in sync with controller state
*/
atomic_clear_bit(bt_dev.flags, BT_DEV_ADVERTISING);
/* only for slave we may need to add new connection */
if (!conn) {
conn = bt_conn_add_le(&id_addr);
}
}
if (!conn) {
BT_ERR("Unable to add new conn for handle %u", handle);
return;
}
conn->handle = handle;
bt_addr_le_copy(&conn->le.dst, &id_addr);
conn->le.interval = sys_le16_to_cpu(evt->interval);
conn->le.latency = sys_le16_to_cpu(evt->latency);
conn->le.timeout = sys_le16_to_cpu(evt->supv_timeout);
conn->role = evt->role;
conn->err = 0U;
/*
* Use connection address (instead of identity address) as initiator
* or responder address. Only slave needs to be updated. For master all
* was set during outgoing connection creation.
*/
if (conn->role == BT_HCI_ROLE_SLAVE) {
conn->id = bt_dev.adv_id;
bt_addr_le_copy(&conn->le.init_addr, &peer_addr);
if (IS_ENABLED(CONFIG_BT_PRIVACY)) {
bt_addr_copy(&conn->le.resp_addr.a, &evt->local_rpa);
conn->le.resp_addr.type = BT_ADDR_LE_RANDOM;
} else {
bt_addr_le_copy(&conn->le.resp_addr,
&bt_dev.id_addr[conn->id]);
}
/* if the controller supports, lets advertise for another
* slave connection.
* check for connectable advertising state is sufficient as
* this is how this le connection complete for slave occurred.
*/
if (atomic_test_bit(bt_dev.flags, BT_DEV_KEEP_ADVERTISING) &&
BT_LE_STATES_SLAVE_CONN_ADV(bt_dev.le.states)) {
if (IS_ENABLED(CONFIG_BT_PRIVACY)) {
le_set_private_addr(bt_dev.adv_id);
}
set_advertise_enable(true);
}
}
bt_conn_set_state(conn, BT_CONN_CONNECTED);
/*
* it is possible that connection was disconnected directly from
* connected callback so we must check state before doing connection
* parameters update
*/
if (conn->state != BT_CONN_CONNECTED) {
goto done;
}
if ((evt->role == BT_HCI_ROLE_MASTER) ||
BT_FEAT_LE_SLAVE_FEATURE_XCHG(bt_dev.le.features)) {
err = hci_le_read_remote_features(conn);
if (!err) {
goto done;
}
}
if (IS_ENABLED(CONFIG_BT_AUTO_PHY_UPDATE) &&
BT_FEAT_LE_PHY_2M(bt_dev.le.features)) {
err = hci_le_set_phy(conn);
if (!err) {
atomic_set_bit(conn->flags, BT_CONN_AUTO_PHY_UPDATE);
goto done;
}
}
if (IS_ENABLED(CONFIG_BT_DATA_LEN_UPDATE) &&
BT_FEAT_LE_DLE(bt_dev.le.features)) {
hci_le_set_data_len(conn);
}
if (IS_ENABLED(CONFIG_BT_PERIPHERAL) &&
conn->role == BT_CONN_ROLE_SLAVE) {
slave_update_conn_param(conn);
}
done:
bt_conn_unref(conn);
if (IS_ENABLED(CONFIG_BT_CENTRAL)) {
bt_le_scan_update(false);
}
}
static void le_enh_conn_complete(struct net_buf *buf)
{
enh_conn_complete((void *)buf->data);
}
static void le_legacy_conn_complete(struct net_buf *buf)
{
struct bt_hci_evt_le_conn_complete *evt = (void *)buf->data;
struct bt_hci_evt_le_enh_conn_complete enh;
const bt_addr_le_t *id_addr;
BT_DBG("status %u role %u %s", evt->status, evt->role,
bt_addr_le_str(&evt->peer_addr));
enh.status = evt->status;
enh.handle = evt->handle;
enh.role = evt->role;
enh.interval = evt->interval;
enh.latency = evt->latency;
enh.supv_timeout = evt->supv_timeout;
enh.clock_accuracy = evt->clock_accuracy;
bt_addr_le_copy(&enh.peer_addr, &evt->peer_addr);
if (IS_ENABLED(CONFIG_BT_PRIVACY)) {
bt_addr_copy(&enh.local_rpa, &bt_dev.random_addr.a);
} else {
bt_addr_copy(&enh.local_rpa, BT_ADDR_ANY);
}
if (evt->role == BT_HCI_ROLE_SLAVE) {
id_addr = find_id_addr(bt_dev.adv_id, &enh.peer_addr);
} else {
id_addr = find_id_addr(BT_ID_DEFAULT, &enh.peer_addr);
}
if (id_addr != &enh.peer_addr) {
bt_addr_copy(&enh.peer_rpa, &enh.peer_addr.a);
bt_addr_le_copy(&enh.peer_addr, id_addr);
enh.peer_addr.type += BT_ADDR_LE_PUBLIC_ID;
} else {
bt_addr_copy(&enh.peer_rpa, BT_ADDR_ANY);
}
enh_conn_complete(&enh);
}
static void le_remote_feat_complete(struct net_buf *buf)
{
struct bt_hci_evt_le_remote_feat_complete *evt = (void *)buf->data;
u16_t handle = sys_le16_to_cpu(evt->handle);
struct bt_conn *conn;
conn = bt_conn_lookup_handle(handle);
if (!conn) {
BT_ERR("Unable to lookup conn for handle %u", handle);
return;
}
if (!evt->status) {
memcpy(conn->le.features, evt->features,
sizeof(conn->le.features));
}
if (IS_ENABLED(CONFIG_BT_AUTO_PHY_UPDATE) &&
BT_FEAT_LE_PHY_2M(bt_dev.le.features) &&
BT_FEAT_LE_PHY_2M(conn->le.features)) {
int err;
err = hci_le_set_phy(conn);
if (!err) {
atomic_set_bit(conn->flags, BT_CONN_AUTO_PHY_UPDATE);
goto done;
}
}
if (IS_ENABLED(CONFIG_BT_DATA_LEN_UPDATE) &&
BT_FEAT_LE_DLE(bt_dev.le.features) &&
BT_FEAT_LE_DLE(conn->le.features)) {
hci_le_set_data_len(conn);
}
if (IS_ENABLED(CONFIG_BT_PERIPHERAL) &&
conn->role == BT_CONN_ROLE_SLAVE) {
slave_update_conn_param(conn);
}
done:
bt_conn_unref(conn);
}
#if defined(CONFIG_BT_DATA_LEN_UPDATE)
static void le_data_len_change(struct net_buf *buf)
{
struct bt_hci_evt_le_data_len_change *evt = (void *)buf->data;
u16_t max_tx_octets = sys_le16_to_cpu(evt->max_tx_octets);
u16_t max_rx_octets = sys_le16_to_cpu(evt->max_rx_octets);
u16_t max_tx_time = sys_le16_to_cpu(evt->max_tx_time);
u16_t max_rx_time = sys_le16_to_cpu(evt->max_rx_time);
u16_t handle = sys_le16_to_cpu(evt->handle);
struct bt_conn *conn;
conn = bt_conn_lookup_handle(handle);
if (!conn) {
BT_ERR("Unable to lookup conn for handle %u", handle);
return;
}
BT_DBG("max. tx: %u (%uus), max. rx: %u (%uus)", max_tx_octets,
max_tx_time, max_rx_octets, max_rx_time);
/* TODO use those */
bt_conn_unref(conn);
}
#endif /* CONFIG_BT_DATA_LEN_UPDATE */
#if defined(CONFIG_BT_PHY_UPDATE)
static void le_phy_update_complete(struct net_buf *buf)
{
struct bt_hci_evt_le_phy_update_complete *evt = (void *)buf->data;
u16_t handle = sys_le16_to_cpu(evt->handle);
struct bt_conn *conn;
conn = bt_conn_lookup_handle(handle);
if (!conn) {
BT_ERR("Unable to lookup conn for handle %u", handle);
return;
}
BT_DBG("PHY updated: status: 0x%x, tx: %u, rx: %u",
evt->status, evt->tx_phy, evt->rx_phy);
if (!IS_ENABLED(CONFIG_BT_AUTO_PHY_UPDATE) ||
!atomic_test_and_clear_bit(conn->flags, BT_CONN_AUTO_PHY_UPDATE)) {
goto done;
}
if (IS_ENABLED(CONFIG_BT_DATA_LEN_UPDATE) &&
BT_FEAT_LE_DLE(bt_dev.le.features) &&
BT_FEAT_LE_DLE(conn->le.features)) {
hci_le_set_data_len(conn);
}
if (IS_ENABLED(CONFIG_BT_PERIPHERAL) &&
conn->role == BT_CONN_ROLE_SLAVE) {
slave_update_conn_param(conn);
}
done:
bt_conn_unref(conn);
}
#endif /* CONFIG_BT_PHY_UPDATE */
bool bt_le_conn_params_valid(const struct bt_le_conn_param *param)
{
/* All limits according to BT Core spec 5.0 [Vol 2, Part E, 7.8.12] */
if (param->interval_min > param->interval_max ||
param->interval_min < 6 || param->interval_max > 3200) {
return false;
}
if (param->latency > 499) {
return false;
}
if (param->timeout < 10 || param->timeout > 3200 ||
((param->timeout * 4U) <=
((1 + param->latency) * param->interval_max))) {
return false;
}
return true;
}
static void le_conn_param_neg_reply(u16_t handle, u8_t reason)
{
struct bt_hci_cp_le_conn_param_req_neg_reply *cp;
struct net_buf *buf;
buf = bt_hci_cmd_create(BT_HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY,
sizeof(*cp));
if (!buf) {
BT_ERR("Unable to allocate buffer");
return;
}
cp = net_buf_add(buf, sizeof(*cp));
cp->handle = sys_cpu_to_le16(handle);
cp->reason = sys_cpu_to_le16(reason);
bt_hci_cmd_send(BT_HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, buf);
}
static int le_conn_param_req_reply(u16_t handle,
const struct bt_le_conn_param *param)
{
struct bt_hci_cp_le_conn_param_req_reply *cp;
struct net_buf *buf;
buf = bt_hci_cmd_create(BT_HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
(void)memset(cp, 0, sizeof(*cp));
cp->handle = sys_cpu_to_le16(handle);
cp->interval_min = sys_cpu_to_le16(param->interval_min);
cp->interval_max = sys_cpu_to_le16(param->interval_max);
cp->latency = sys_cpu_to_le16(param->latency);
cp->timeout = sys_cpu_to_le16(param->timeout);
return bt_hci_cmd_send(BT_HCI_OP_LE_CONN_PARAM_REQ_REPLY, buf);
}
static void le_conn_param_req(struct net_buf *buf)
{
struct bt_hci_evt_le_conn_param_req *evt = (void *)buf->data;
struct bt_le_conn_param param;
struct bt_conn *conn;
u16_t handle;
handle = sys_le16_to_cpu(evt->handle);
param.interval_min = sys_le16_to_cpu(evt->interval_min);
param.interval_max = sys_le16_to_cpu(evt->interval_max);
param.latency = sys_le16_to_cpu(evt->latency);
param.timeout = sys_le16_to_cpu(evt->timeout);
conn = bt_conn_lookup_handle(handle);
if (!conn) {
BT_ERR("Unable to lookup conn for handle %u", handle);
le_conn_param_neg_reply(handle, BT_HCI_ERR_UNKNOWN_CONN_ID);
return;
}
if (!le_param_req(conn, &param)) {
le_conn_param_neg_reply(handle, BT_HCI_ERR_INVALID_LL_PARAM);
} else {
le_conn_param_req_reply(handle, &param);
}
bt_conn_unref(conn);
}
static void le_conn_update_complete(struct net_buf *buf)
{
struct bt_hci_evt_le_conn_update_complete *evt = (void *)buf->data;
struct bt_conn *conn;
u16_t handle;
handle = sys_le16_to_cpu(evt->handle);
BT_DBG("status %u, handle %u", evt->status, handle);
conn = bt_conn_lookup_handle(handle);
if (!conn) {
BT_ERR("Unable to lookup conn for handle %u", handle);
return;
}
if (!evt->status) {
conn->le.interval = sys_le16_to_cpu(evt->interval);
conn->le.latency = sys_le16_to_cpu(evt->latency);
conn->le.timeout = sys_le16_to_cpu(evt->supv_timeout);
notify_le_param_updated(conn);
} else if (evt->status == BT_HCI_ERR_UNSUPP_REMOTE_FEATURE &&
conn->role == BT_HCI_ROLE_SLAVE &&
!atomic_test_and_set_bit(conn->flags,
BT_CONN_SLAVE_PARAM_L2CAP)) {
/* CPR not supported, let's try L2CAP CPUP instead */
struct bt_le_conn_param param;
param.interval_min = conn->le.interval_min;
param.interval_max = conn->le.interval_max;
param.latency = conn->le.pending_latency;
param.timeout = conn->le.pending_timeout;
bt_l2cap_update_conn_param(conn, &param);
}
bt_conn_unref(conn);
}
#if defined(CONFIG_BT_CENTRAL)
static void check_pending_conn(const bt_addr_le_t *id_addr,
const bt_addr_le_t *addr, u8_t evtype)
{
struct bt_conn *conn;
/* No connections are allowed during explicit scanning */
if (atomic_test_bit(bt_dev.flags, BT_DEV_EXPLICIT_SCAN)) {
return;
}
/* Return if event is not connectable */
if (evtype != BT_LE_ADV_IND && evtype != BT_LE_ADV_DIRECT_IND) {
return;
}
conn = bt_conn_lookup_state_le(id_addr, BT_CONN_CONNECT_SCAN);
if (!conn) {
return;
}
if (atomic_test_bit(bt_dev.flags, BT_DEV_SCANNING) &&
set_le_scan_enable(BT_HCI_LE_SCAN_DISABLE)) {
goto failed;
}
if (IS_ENABLED(CONFIG_BT_PRIVACY)) {
if (le_set_private_addr(BT_ID_DEFAULT)) {
goto failed;
}
bt_addr_le_copy(&conn->le.init_addr, &bt_dev.random_addr);
} else {
const bt_addr_le_t *addr = &bt_dev.id_addr[conn->id];
/* If Static Random address is used as Identity address we
* need to restore it before creating connection. Otherwise
* NRPA used for active scan could be used for connection.
*/
if (addr->type == BT_ADDR_LE_RANDOM) {
set_random_address(&addr->a);
}
bt_addr_le_copy(&conn->le.init_addr, addr);
}
bt_addr_le_copy(&conn->le.resp_addr, addr);
if (hci_le_create_conn(conn)) {
goto failed;
}
bt_conn_set_state(conn, BT_CONN_CONNECT);
bt_conn_unref(conn);
return;
failed:
conn->err = BT_HCI_ERR_UNSPECIFIED;
bt_conn_set_state(conn, BT_CONN_DISCONNECTED);
bt_conn_unref(conn);
bt_le_scan_update(false);
}
#endif /* CONFIG_BT_CENTRAL */
#if defined(CONFIG_BT_HCI_ACL_FLOW_CONTROL)
static int set_flow_control(void)
{
struct bt_hci_cp_host_buffer_size *hbs;
struct net_buf *buf;
int err;
/* Check if host flow control is actually supported */
if (!BT_CMD_TEST(bt_dev.supported_commands, 10, 5)) {
BT_WARN("Controller to host flow control not supported");
return 0;
}
buf = bt_hci_cmd_create(BT_HCI_OP_HOST_BUFFER_SIZE,
sizeof(*hbs));
if (!buf) {
return -ENOBUFS;
}
hbs = net_buf_add(buf, sizeof(*hbs));
(void)memset(hbs, 0, sizeof(*hbs));
hbs->acl_mtu = sys_cpu_to_le16(CONFIG_BT_L2CAP_RX_MTU +
sizeof(struct bt_l2cap_hdr));
hbs->acl_pkts = sys_cpu_to_le16(CONFIG_BT_ACL_RX_COUNT);
err = bt_hci_cmd_send_sync(BT_HCI_OP_HOST_BUFFER_SIZE, buf, NULL);
if (err) {
return err;
}
buf = bt_hci_cmd_create(BT_HCI_OP_SET_CTL_TO_HOST_FLOW, 1);
if (!buf) {
return -ENOBUFS;
}
net_buf_add_u8(buf, BT_HCI_CTL_TO_HOST_FLOW_ENABLE);
return bt_hci_cmd_send_sync(BT_HCI_OP_SET_CTL_TO_HOST_FLOW, buf, NULL);
}
#endif /* CONFIG_BT_HCI_ACL_FLOW_CONTROL */
static int bt_clear_all_pairings(u8_t id)
{
bt_conn_disconnect_all(id);
if (IS_ENABLED(CONFIG_BT_SMP)) {
bt_keys_clear_all(id);
}
if (IS_ENABLED(CONFIG_BT_BREDR)) {
bt_keys_link_key_clear_addr(NULL);
}
return 0;
}
int bt_unpair(u8_t id, const bt_addr_le_t *addr)
{
struct bt_keys *keys = NULL;
struct bt_conn *conn;
if (id >= CONFIG_BT_ID_MAX) {
return -EINVAL;
}
if (!addr || !bt_addr_le_cmp(addr, BT_ADDR_LE_ANY)) {
return bt_clear_all_pairings(id);
}
conn = bt_conn_lookup_addr_le(id, addr);
if (conn) {
/* Clear the conn->le.keys pointer since we'll invalidate it,
* and don't want any subsequent code (like disconnected
* callbacks) accessing it.
*/
if (conn->type == BT_CONN_TYPE_LE) {
keys = conn->le.keys;
conn->le.keys = NULL;
}
bt_conn_disconnect(conn, BT_HCI_ERR_REMOTE_USER_TERM_CONN);
bt_conn_unref(conn);
}
if (IS_ENABLED(CONFIG_BT_BREDR)) {
/* LE Public may indicate BR/EDR as well */
if (addr->type == BT_ADDR_LE_PUBLIC) {
bt_keys_link_key_clear_addr(&addr->a);
}
}
if (IS_ENABLED(CONFIG_BT_SMP)) {
if (!keys) {
keys = bt_keys_find_addr(id, addr);
}
if (keys) {
bt_keys_clear(keys);
}
}
if (IS_ENABLED(CONFIG_BT_SETTINGS)) {
bt_gatt_clear(id, addr);
}
return 0;
}
#endif /* CONFIG_BT_CONN */
#if defined(CONFIG_BT_BREDR)
static void reset_pairing(struct bt_conn *conn)
{
atomic_clear_bit(conn->flags, BT_CONN_BR_PAIRING);
atomic_clear_bit(conn->flags, BT_CONN_BR_PAIRING_INITIATOR);
atomic_clear_bit(conn->flags, BT_CONN_BR_LEGACY_SECURE);
/* Reset required security level to current operational */
conn->required_sec_level = conn->sec_level;
}
static int reject_conn(const bt_addr_t *bdaddr, u8_t reason)
{
struct bt_hci_cp_reject_conn_req *cp;
struct net_buf *buf;
int err;
buf = bt_hci_cmd_create(BT_HCI_OP_REJECT_CONN_REQ, sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
bt_addr_copy(&cp->bdaddr, bdaddr);
cp->reason = reason;
err = bt_hci_cmd_send_sync(BT_HCI_OP_REJECT_CONN_REQ, buf, NULL);
if (err) {
return err;
}
return 0;
}
static int accept_sco_conn(const bt_addr_t *bdaddr, struct bt_conn *sco_conn)
{
struct bt_hci_cp_accept_sync_conn_req *cp;
struct net_buf *buf;
int err;
buf = bt_hci_cmd_create(BT_HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
bt_addr_copy(&cp->bdaddr, bdaddr);
cp->pkt_type = sco_conn->sco.pkt_type;
cp->tx_bandwidth = 0x00001f40;
cp->rx_bandwidth = 0x00001f40;
cp->max_latency = 0x0007;
cp->retrans_effort = 0x01;
cp->content_format = BT_VOICE_CVSD_16BIT;
err = bt_hci_cmd_send_sync(BT_HCI_OP_ACCEPT_SYNC_CONN_REQ, buf, NULL);
if (err) {
return err;
}
return 0;
}
static int accept_conn(const bt_addr_t *bdaddr)
{
struct bt_hci_cp_accept_conn_req *cp;
struct net_buf *buf;
int err;
buf = bt_hci_cmd_create(BT_HCI_OP_ACCEPT_CONN_REQ, sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
bt_addr_copy(&cp->bdaddr, bdaddr);
cp->role = BT_HCI_ROLE_SLAVE;
err = bt_hci_cmd_send_sync(BT_HCI_OP_ACCEPT_CONN_REQ, buf, NULL);
if (err) {
return err;
}
return 0;
}
static void bt_esco_conn_req(struct bt_hci_evt_conn_request *evt)
{
struct bt_conn *sco_conn;
sco_conn = bt_conn_add_sco(&evt->bdaddr, evt->link_type);
if (!sco_conn) {
reject_conn(&evt->bdaddr, BT_HCI_ERR_INSUFFICIENT_RESOURCES);
return;
}
if (accept_sco_conn(&evt->bdaddr, sco_conn)) {
BT_ERR("Error accepting connection from %s",
bt_addr_str(&evt->bdaddr));
reject_conn(&evt->bdaddr, BT_HCI_ERR_UNSPECIFIED);
bt_sco_cleanup(sco_conn);
return;
}
sco_conn->role = BT_HCI_ROLE_SLAVE;
bt_conn_set_state(sco_conn, BT_CONN_CONNECT);
bt_conn_unref(sco_conn);
}
static void conn_req(struct net_buf *buf)
{
struct bt_hci_evt_conn_request *evt = (void *)buf->data;
struct bt_conn *conn;
BT_DBG("conn req from %s, type 0x%02x", bt_addr_str(&evt->bdaddr),
evt->link_type);
if (evt->link_type != BT_HCI_ACL) {
bt_esco_conn_req(evt);
return;
}
conn = bt_conn_add_br(&evt->bdaddr);
if (!conn) {
reject_conn(&evt->bdaddr, BT_HCI_ERR_INSUFFICIENT_RESOURCES);
return;
}
accept_conn(&evt->bdaddr);
conn->role = BT_HCI_ROLE_SLAVE;
bt_conn_set_state(conn, BT_CONN_CONNECT);
bt_conn_unref(conn);
}
static void update_sec_level_br(struct bt_conn *conn)
{
if (!conn->encrypt) {
conn->sec_level = BT_SECURITY_LOW;
return;
}
if (conn->br.link_key) {
if (conn->br.link_key->flags & BT_LINK_KEY_AUTHENTICATED) {
if (conn->encrypt == 0x02) {
conn->sec_level = BT_SECURITY_FIPS;
} else {
conn->sec_level = BT_SECURITY_HIGH;
}
} else {
conn->sec_level = BT_SECURITY_MEDIUM;
}
} else {
BT_WARN("No BR/EDR link key found");
conn->sec_level = BT_SECURITY_MEDIUM;
}
if (conn->required_sec_level > conn->sec_level) {
BT_ERR("Failed to set required security level");
bt_conn_disconnect(conn, BT_HCI_ERR_AUTHENTICATION_FAIL);
}
}
static void synchronous_conn_complete(struct net_buf *buf)
{
struct bt_hci_evt_sync_conn_complete *evt = (void *)buf->data;
struct bt_conn *sco_conn;
u16_t handle = sys_le16_to_cpu(evt->handle);
BT_DBG("status 0x%02x, handle %u, type 0x%02x", evt->status, handle,
evt->link_type);
sco_conn = bt_conn_lookup_addr_sco(&evt->bdaddr);
if (!sco_conn) {
BT_ERR("Unable to find conn for %s", bt_addr_str(&evt->bdaddr));
return;
}
if (evt->status) {
sco_conn->err = evt->status;
bt_conn_set_state(sco_conn, BT_CONN_DISCONNECTED);
bt_conn_unref(sco_conn);
return;
}
sco_conn->handle = handle;
bt_conn_set_state(sco_conn, BT_CONN_CONNECTED);
bt_conn_unref(sco_conn);
}
static void conn_complete(struct net_buf *buf)
{
struct bt_hci_evt_conn_complete *evt = (void *)buf->data;
struct bt_conn *conn;
struct bt_hci_cp_read_remote_features *cp;
u16_t handle = sys_le16_to_cpu(evt->handle);
BT_DBG("status 0x%02x, handle %u, type 0x%02x", evt->status, handle,
evt->link_type);
conn = bt_conn_lookup_addr_br(&evt->bdaddr);
if (!conn) {
BT_ERR("Unable to find conn for %s", bt_addr_str(&evt->bdaddr));
return;
}
if (evt->status) {
conn->err = evt->status;
bt_conn_set_state(conn, BT_CONN_DISCONNECTED);
bt_conn_unref(conn);
return;
}
conn->handle = handle;
conn->err = 0U;
conn->encrypt = evt->encr_enabled;
update_sec_level_br(conn);
bt_conn_set_state(conn, BT_CONN_CONNECTED);
bt_conn_unref(conn);
buf = bt_hci_cmd_create(BT_HCI_OP_READ_REMOTE_FEATURES, sizeof(*cp));
if (!buf) {
return;
}
cp = net_buf_add(buf, sizeof(*cp));
cp->handle = evt->handle;
bt_hci_cmd_send_sync(BT_HCI_OP_READ_REMOTE_FEATURES, buf, NULL);
}
static void pin_code_req(struct net_buf *buf)
{
struct bt_hci_evt_pin_code_req *evt = (void *)buf->data;
struct bt_conn *conn;
BT_DBG("");
conn = bt_conn_lookup_addr_br(&evt->bdaddr);
if (!conn) {
BT_ERR("Can't find conn for %s", bt_addr_str(&evt->bdaddr));
return;
}
bt_conn_pin_code_req(conn);
bt_conn_unref(conn);
}
static void link_key_notify(struct net_buf *buf)
{
struct bt_hci_evt_link_key_notify *evt = (void *)buf->data;
struct bt_conn *conn;
conn = bt_conn_lookup_addr_br(&evt->bdaddr);
if (!conn) {
BT_ERR("Can't find conn for %s", bt_addr_str(&evt->bdaddr));
return;
}
BT_DBG("%s, link type 0x%02x", bt_addr_str(&evt->bdaddr), evt->key_type);
if (!conn->br.link_key) {
conn->br.link_key = bt_keys_get_link_key(&evt->bdaddr);
}
if (!conn->br.link_key) {
BT_ERR("Can't update keys for %s", bt_addr_str(&evt->bdaddr));
bt_conn_unref(conn);
return;
}
/* clear any old Link Key flags */
conn->br.link_key->flags = 0U;
switch (evt->key_type) {
case BT_LK_COMBINATION:
/*
* Setting Combination Link Key as AUTHENTICATED means it was
* successfully generated by 16 digits wide PIN code.
*/
if (atomic_test_and_clear_bit(conn->flags,
BT_CONN_BR_LEGACY_SECURE)) {
conn->br.link_key->flags |= BT_LINK_KEY_AUTHENTICATED;
}
memcpy(conn->br.link_key->val, evt->link_key, 16);
break;
case BT_LK_AUTH_COMBINATION_P192:
conn->br.link_key->flags |= BT_LINK_KEY_AUTHENTICATED;
/* fall through */
case BT_LK_UNAUTH_COMBINATION_P192:
/* Mark no-bond so that link-key is removed on disconnection */
if (bt_conn_ssp_get_auth(conn) < BT_HCI_DEDICATED_BONDING) {
atomic_set_bit(conn->flags, BT_CONN_BR_NOBOND);
}
memcpy(conn->br.link_key->val, evt->link_key, 16);
break;
case BT_LK_AUTH_COMBINATION_P256:
conn->br.link_key->flags |= BT_LINK_KEY_AUTHENTICATED;
/* fall through */
case BT_LK_UNAUTH_COMBINATION_P256:
conn->br.link_key->flags |= BT_LINK_KEY_SC;
/* Mark no-bond so that link-key is removed on disconnection */
if (bt_conn_ssp_get_auth(conn) < BT_HCI_DEDICATED_BONDING) {
atomic_set_bit(conn->flags, BT_CONN_BR_NOBOND);
}
memcpy(conn->br.link_key->val, evt->link_key, 16);
break;
default:
BT_WARN("Unsupported Link Key type %u", evt->key_type);
(void)memset(conn->br.link_key->val, 0,
sizeof(conn->br.link_key->val));
break;
}
bt_conn_unref(conn);
}
static void link_key_neg_reply(const bt_addr_t *bdaddr)
{
struct bt_hci_cp_link_key_neg_reply *cp;
struct net_buf *buf;
BT_DBG("");
buf = bt_hci_cmd_create(BT_HCI_OP_LINK_KEY_NEG_REPLY, sizeof(*cp));
if (!buf) {
BT_ERR("Out of command buffers");
return;
}
cp = net_buf_add(buf, sizeof(*cp));
bt_addr_copy(&cp->bdaddr, bdaddr);
bt_hci_cmd_send_sync(BT_HCI_OP_LINK_KEY_NEG_REPLY, buf, NULL);
}
static void link_key_reply(const bt_addr_t *bdaddr, const u8_t *lk)
{
struct bt_hci_cp_link_key_reply *cp;
struct net_buf *buf;
BT_DBG("");
buf = bt_hci_cmd_create(BT_HCI_OP_LINK_KEY_REPLY, sizeof(*cp));
if (!buf) {
BT_ERR("Out of command buffers");
return;
}
cp = net_buf_add(buf, sizeof(*cp));
bt_addr_copy(&cp->bdaddr, bdaddr);
memcpy(cp->link_key, lk, 16);
bt_hci_cmd_send_sync(BT_HCI_OP_LINK_KEY_REPLY, buf, NULL);
}
static void link_key_req(struct net_buf *buf)
{
struct bt_hci_evt_link_key_req *evt = (void *)buf->data;
struct bt_conn *conn;
BT_DBG("%s", bt_addr_str(&evt->bdaddr));
conn = bt_conn_lookup_addr_br(&evt->bdaddr);
if (!conn) {
BT_ERR("Can't find conn for %s", bt_addr_str(&evt->bdaddr));
link_key_neg_reply(&evt->bdaddr);
return;
}
if (!conn->br.link_key) {
conn->br.link_key = bt_keys_find_link_key(&evt->bdaddr);
}
if (!conn->br.link_key) {
link_key_neg_reply(&evt->bdaddr);
bt_conn_unref(conn);
return;
}
/*
* Enforce regenerate by controller stronger link key since found one
* in database not covers requested security level.
*/
if (!(conn->br.link_key->flags & BT_LINK_KEY_AUTHENTICATED) &&
conn->required_sec_level > BT_SECURITY_MEDIUM) {
link_key_neg_reply(&evt->bdaddr);
bt_conn_unref(conn);
return;
}
link_key_reply(&evt->bdaddr, conn->br.link_key->val);
bt_conn_unref(conn);
}
static void io_capa_neg_reply(const bt_addr_t *bdaddr, const u8_t reason)
{
struct bt_hci_cp_io_capability_neg_reply *cp;
struct net_buf *resp_buf;
resp_buf = bt_hci_cmd_create(BT_HCI_OP_IO_CAPABILITY_NEG_REPLY,
sizeof(*cp));
if (!resp_buf) {
BT_ERR("Out of command buffers");
return;
}
cp = net_buf_add(resp_buf, sizeof(*cp));
bt_addr_copy(&cp->bdaddr, bdaddr);
cp->reason = reason;
bt_hci_cmd_send_sync(BT_HCI_OP_IO_CAPABILITY_NEG_REPLY, resp_buf, NULL);
}
static void io_capa_resp(struct net_buf *buf)
{
struct bt_hci_evt_io_capa_resp *evt = (void *)buf->data;
struct bt_conn *conn;
BT_DBG("remote %s, IOcapa 0x%02x, auth 0x%02x",
bt_addr_str(&evt->bdaddr), evt->capability, evt->authentication);
if (evt->authentication > BT_HCI_GENERAL_BONDING_MITM) {
BT_ERR("Invalid remote authentication requirements");
io_capa_neg_reply(&evt->bdaddr,
BT_HCI_ERR_UNSUPP_FEATURE_PARAM_VAL);
return;
}
if (evt->capability > BT_IO_NO_INPUT_OUTPUT) {
BT_ERR("Invalid remote io capability requirements");
io_capa_neg_reply(&evt->bdaddr,
BT_HCI_ERR_UNSUPP_FEATURE_PARAM_VAL);
return;
}
conn = bt_conn_lookup_addr_br(&evt->bdaddr);
if (!conn) {
BT_ERR("Unable to find conn for %s", bt_addr_str(&evt->bdaddr));
return;
}
conn->br.remote_io_capa = evt->capability;
conn->br.remote_auth = evt->authentication;
atomic_set_bit(conn->flags, BT_CONN_BR_PAIRING);
bt_conn_unref(conn);
}
static void io_capa_req(struct net_buf *buf)
{
struct bt_hci_evt_io_capa_req *evt = (void *)buf->data;
struct net_buf *resp_buf;
struct bt_conn *conn;
struct bt_hci_cp_io_capability_reply *cp;
u8_t auth;
BT_DBG("");
conn = bt_conn_lookup_addr_br(&evt->bdaddr);
if (!conn) {
BT_ERR("Can't find conn for %s", bt_addr_str(&evt->bdaddr));
return;
}
resp_buf = bt_hci_cmd_create(BT_HCI_OP_IO_CAPABILITY_REPLY,
sizeof(*cp));
if (!resp_buf) {
BT_ERR("Out of command buffers");
bt_conn_unref(conn);
return;
}
/*
* Set authentication requirements when acting as pairing initiator to
* 'dedicated bond' with MITM protection set if local IO capa
* potentially allows it, and for acceptor, based on local IO capa and
* remote's authentication set.
*/
if (atomic_test_bit(conn->flags, BT_CONN_BR_PAIRING_INITIATOR)) {
if (bt_conn_get_io_capa() != BT_IO_NO_INPUT_OUTPUT) {
auth = BT_HCI_DEDICATED_BONDING_MITM;
} else {
auth = BT_HCI_DEDICATED_BONDING;
}
} else {
auth = bt_conn_ssp_get_auth(conn);
}
cp = net_buf_add(resp_buf, sizeof(*cp));
bt_addr_copy(&cp->bdaddr, &evt->bdaddr);
cp->capability = bt_conn_get_io_capa();
cp->authentication = auth;
cp->oob_data = 0U;
bt_hci_cmd_send_sync(BT_HCI_OP_IO_CAPABILITY_REPLY, resp_buf, NULL);
bt_conn_unref(conn);
}
static void ssp_complete(struct net_buf *buf)
{
struct bt_hci_evt_ssp_complete *evt = (void *)buf->data;
struct bt_conn *conn;
BT_DBG("status %u", evt->status);
conn = bt_conn_lookup_addr_br(&evt->bdaddr);
if (!conn) {
BT_ERR("Can't find conn for %s", bt_addr_str(&evt->bdaddr));
return;
}
if (evt->status) {
bt_conn_disconnect(conn, BT_HCI_ERR_AUTHENTICATION_FAIL);
}
bt_conn_unref(conn);
}
static void user_confirm_req(struct net_buf *buf)
{
struct bt_hci_evt_user_confirm_req *evt = (void *)buf->data;
struct bt_conn *conn;
conn = bt_conn_lookup_addr_br(&evt->bdaddr);
if (!conn) {
BT_ERR("Can't find conn for %s", bt_addr_str(&evt->bdaddr));
return;
}
bt_conn_ssp_auth(conn, sys_le32_to_cpu(evt->passkey));
bt_conn_unref(conn);
}
static void user_passkey_notify(struct net_buf *buf)
{
struct bt_hci_evt_user_passkey_notify *evt = (void *)buf->data;
struct bt_conn *conn;
BT_DBG("");
conn = bt_conn_lookup_addr_br(&evt->bdaddr);
if (!conn) {
BT_ERR("Can't find conn for %s", bt_addr_str(&evt->bdaddr));
return;
}
bt_conn_ssp_auth(conn, sys_le32_to_cpu(evt->passkey));
bt_conn_unref(conn);
}
static void user_passkey_req(struct net_buf *buf)
{
struct bt_hci_evt_user_passkey_req *evt = (void *)buf->data;
struct bt_conn *conn;
conn = bt_conn_lookup_addr_br(&evt->bdaddr);
if (!conn) {
BT_ERR("Can't find conn for %s", bt_addr_str(&evt->bdaddr));
return;
}
bt_conn_ssp_auth(conn, 0);
bt_conn_unref(conn);
}
struct discovery_priv {
u16_t clock_offset;
u8_t pscan_rep_mode;
u8_t resolving;
} __packed;
static int request_name(const bt_addr_t *addr, u8_t pscan, u16_t offset)
{
struct bt_hci_cp_remote_name_request *cp;
struct net_buf *buf;
buf = bt_hci_cmd_create(BT_HCI_OP_REMOTE_NAME_REQUEST, sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
bt_addr_copy(&cp->bdaddr, addr);
cp->pscan_rep_mode = pscan;
cp->reserved = 0x00; /* reserver, should be set to 0x00 */
cp->clock_offset = offset;
return bt_hci_cmd_send_sync(BT_HCI_OP_REMOTE_NAME_REQUEST, buf, NULL);
}
#define EIR_SHORT_NAME 0x08
#define EIR_COMPLETE_NAME 0x09
static bool eir_has_name(const u8_t *eir)
{
int len = 240;
while (len) {
if (len < 2) {
break;
};
/* Look for early termination */
if (!eir[0]) {
break;
}
/* Check if field length is correct */
if (eir[0] > len - 1) {
break;
}
switch (eir[1]) {
case EIR_SHORT_NAME:
case EIR_COMPLETE_NAME:
if (eir[0] > 1) {
return true;
}
break;
default:
break;
}
/* Parse next AD Structure */
len -= eir[0] + 1;
eir += eir[0] + 1;
}
return false;
}
static void report_discovery_results(void)
{
bool resolving_names = false;
int i;
for (i = 0; i < discovery_results_count; i++) {
struct discovery_priv *priv;
priv = (struct discovery_priv *)&discovery_results[i]._priv;
if (eir_has_name(discovery_results[i].eir)) {
continue;
}
if (request_name(&discovery_results[i].addr,
priv->pscan_rep_mode, priv->clock_offset)) {
continue;
}
priv->resolving = 1U;
resolving_names = true;
}
if (resolving_names) {
return;
}
atomic_clear_bit(bt_dev.flags, BT_DEV_INQUIRY);
discovery_cb(discovery_results, discovery_results_count);
discovery_cb = NULL;
discovery_results = NULL;
discovery_results_size = 0;
discovery_results_count = 0;
}
static void inquiry_complete(struct net_buf *buf)
{
struct bt_hci_evt_inquiry_complete *evt = (void *)buf->data;
if (evt->status) {
BT_ERR("Failed to complete inquiry");
}
report_discovery_results();
}
static struct bt_br_discovery_result *get_result_slot(const bt_addr_t *addr,
s8_t rssi)
{
struct bt_br_discovery_result *result = NULL;
size_t i;
/* check if already present in results */
for (i = 0; i < discovery_results_count; i++) {
if (!bt_addr_cmp(addr, &discovery_results[i].addr)) {
return &discovery_results[i];
}
}
/* Pick a new slot (if available) */
if (discovery_results_count < discovery_results_size) {
bt_addr_copy(&discovery_results[discovery_results_count].addr,
addr);
return &discovery_results[discovery_results_count++];
}
/* ignore if invalid RSSI */
if (rssi == 0xff) {
return NULL;
}
/*
* Pick slot with smallest RSSI that is smaller then passed RSSI
* TODO handle TX if present
*/
for (i = 0; i < discovery_results_size; i++) {
if (discovery_results[i].rssi > rssi) {
continue;
}
if (!result || result->rssi > discovery_results[i].rssi) {
result = &discovery_results[i];
}
}
if (result) {
BT_DBG("Reusing slot (old %s rssi %d dBm)",
bt_addr_str(&result->addr), result->rssi);
bt_addr_copy(&result->addr, addr);
}
return result;
}
static void inquiry_result_with_rssi(struct net_buf *buf)
{
u8_t num_reports = net_buf_pull_u8(buf);
if (!atomic_test_bit(bt_dev.flags, BT_DEV_INQUIRY)) {
return;
}
BT_DBG("number of results: %u", num_reports);
while (num_reports--) {
struct bt_hci_evt_inquiry_result_with_rssi *evt;
struct bt_br_discovery_result *result;
struct discovery_priv *priv;
if (buf->len < sizeof(*evt)) {
BT_ERR("Unexpected end to buffer");
return;
}
evt = net_buf_pull_mem(buf, sizeof(*evt));
BT_DBG("%s rssi %d dBm", bt_addr_str(&evt->addr), evt->rssi);
result = get_result_slot(&evt->addr, evt->rssi);
if (!result) {
return;
}
priv = (struct discovery_priv *)&result->_priv;
priv->pscan_rep_mode = evt->pscan_rep_mode;
priv->clock_offset = evt->clock_offset;
memcpy(result->cod, evt->cod, 3);
result->rssi = evt->rssi;
/* we could reuse slot so make sure EIR is cleared */
(void)memset(result->eir, 0, sizeof(result->eir));
}
}
static void extended_inquiry_result(struct net_buf *buf)
{
struct bt_hci_evt_extended_inquiry_result *evt = (void *)buf->data;
struct bt_br_discovery_result *result;
struct discovery_priv *priv;
if (!atomic_test_bit(bt_dev.flags, BT_DEV_INQUIRY)) {
return;
}
BT_DBG("%s rssi %d dBm", bt_addr_str(&evt->addr), evt->rssi);
result = get_result_slot(&evt->addr, evt->rssi);
if (!result) {
return;
}
priv = (struct discovery_priv *)&result->_priv;
priv->pscan_rep_mode = evt->pscan_rep_mode;
priv->clock_offset = evt->clock_offset;
result->rssi = evt->rssi;
memcpy(result->cod, evt->cod, 3);
memcpy(result->eir, evt->eir, sizeof(result->eir));
}
static void remote_name_request_complete(struct net_buf *buf)
{
struct bt_hci_evt_remote_name_req_complete *evt = (void *)buf->data;
struct bt_br_discovery_result *result;
struct discovery_priv *priv;
int eir_len = 240;
u8_t *eir;
int i;
result = get_result_slot(&evt->bdaddr, 0xff);
if (!result) {
return;
}
priv = (struct discovery_priv *)&result->_priv;
priv->resolving = 0U;
if (evt->status) {
goto check_names;
}
eir = result->eir;
while (eir_len) {
if (eir_len < 2) {
break;
};
/* Look for early termination */
if (!eir[0]) {
size_t name_len;
eir_len -= 2;
/* name is null terminated */
name_len = strlen((const char *)evt->name);
if (name_len > eir_len) {
eir[0] = eir_len + 1;
eir[1] = EIR_SHORT_NAME;
} else {
eir[0] = name_len + 1;
eir[1] = EIR_SHORT_NAME;
}
memcpy(&eir[2], evt->name, eir[0] - 1);
break;
}
/* Check if field length is correct */
if (eir[0] > eir_len - 1) {
break;
}
/* next EIR Structure */
eir_len -= eir[0] + 1;
eir += eir[0] + 1;
}
check_names:
/* if still waiting for names */
for (i = 0; i < discovery_results_count; i++) {
struct discovery_priv *priv;
priv = (struct discovery_priv *)&discovery_results[i]._priv;
if (priv->resolving) {
return;
}
}
/* all names resolved, report discovery results */
atomic_clear_bit(bt_dev.flags, BT_DEV_INQUIRY);
discovery_cb(discovery_results, discovery_results_count);
discovery_cb = NULL;
discovery_results = NULL;
discovery_results_size = 0;
discovery_results_count = 0;
}
static void link_encr(const u16_t handle)
{
struct bt_hci_cp_set_conn_encrypt *encr;
struct net_buf *buf;
BT_DBG("");
buf = bt_hci_cmd_create(BT_HCI_OP_SET_CONN_ENCRYPT, sizeof(*encr));
if (!buf) {
BT_ERR("Out of command buffers");
return;
}
encr = net_buf_add(buf, sizeof(*encr));
encr->handle = sys_cpu_to_le16(handle);
encr->encrypt = 0x01;
bt_hci_cmd_send_sync(BT_HCI_OP_SET_CONN_ENCRYPT, buf, NULL);
}
static void auth_complete(struct net_buf *buf)
{
struct bt_hci_evt_auth_complete *evt = (void *)buf->data;
struct bt_conn *conn;
u16_t handle = sys_le16_to_cpu(evt->handle);
BT_DBG("status %u, handle %u", evt->status, handle);
conn = bt_conn_lookup_handle(handle);
if (!conn) {
BT_ERR("Can't find conn for handle %u", handle);
return;
}
if (evt->status) {
if (conn->state == BT_CONN_CONNECTED) {
/*
* Inform layers above HCI about non-zero authentication
* status to make them able cleanup pending jobs.
*/
bt_l2cap_encrypt_change(conn, evt->status);
}
reset_pairing(conn);
} else {
link_encr(handle);
}
bt_conn_unref(conn);
}
static void read_remote_features_complete(struct net_buf *buf)
{
struct bt_hci_evt_remote_features *evt = (void *)buf->data;
u16_t handle = sys_le16_to_cpu(evt->handle);
struct bt_hci_cp_read_remote_ext_features *cp;
struct bt_conn *conn;
BT_DBG("status %u handle %u", evt->status, handle);
conn = bt_conn_lookup_handle(handle);
if (!conn) {
BT_ERR("Can't find conn for handle %u", handle);
return;
}
if (evt->status) {
goto done;
}
memcpy(conn->br.features[0], evt->features, sizeof(evt->features));
if (!BT_FEAT_EXT_FEATURES(conn->br.features)) {
goto done;
}
buf = bt_hci_cmd_create(BT_HCI_OP_READ_REMOTE_EXT_FEATURES,
sizeof(*cp));
if (!buf) {
goto done;
}
/* Read remote host features (page 1) */
cp = net_buf_add(buf, sizeof(*cp));
cp->handle = evt->handle;
cp->page = 0x01;
bt_hci_cmd_send_sync(BT_HCI_OP_READ_REMOTE_EXT_FEATURES, buf, NULL);
done:
bt_conn_unref(conn);
}
static void read_remote_ext_features_complete(struct net_buf *buf)
{
struct bt_hci_evt_remote_ext_features *evt = (void *)buf->data;
u16_t handle = sys_le16_to_cpu(evt->handle);
struct bt_conn *conn;
BT_DBG("status %u handle %u", evt->status, handle);
conn = bt_conn_lookup_handle(handle);
if (!conn) {
BT_ERR("Can't find conn for handle %u", handle);
return;
}
if (!evt->status && evt->page == 0x01) {
memcpy(conn->br.features[1], evt->features,
sizeof(conn->br.features[1]));
}
bt_conn_unref(conn);
}
static void role_change(struct net_buf *buf)
{
struct bt_hci_evt_role_change *evt = (void *)buf->data;
struct bt_conn *conn;
BT_DBG("status %u role %u addr %s", evt->status, evt->role,
bt_addr_str(&evt->bdaddr));
if (evt->status) {
return;
}
conn = bt_conn_lookup_addr_br(&evt->bdaddr);
if (!conn) {
BT_ERR("Can't find conn for %s", bt_addr_str(&evt->bdaddr));
return;
}
if (evt->role) {
conn->role = BT_CONN_ROLE_SLAVE;
} else {
conn->role = BT_CONN_ROLE_MASTER;
}
bt_conn_unref(conn);
}
#endif /* CONFIG_BT_BREDR */
#if defined(CONFIG_BT_SMP)
static int le_set_privacy_mode(const bt_addr_le_t *addr, u8_t mode)
{
struct bt_hci_cp_le_set_privacy_mode cp;
struct net_buf *buf;
int err;
/* Check if set privacy mode command is supported */
if (!BT_CMD_TEST(bt_dev.supported_commands, 39, 2)) {
BT_WARN("Set privacy mode command is not supported");
return 0;
}
BT_DBG("addr %s mode 0x%02x", bt_addr_le_str(addr), mode);
bt_addr_le_copy(&cp.id_addr, addr);
cp.mode = mode;
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_PRIVACY_MODE, sizeof(cp));
if (!buf) {
return -ENOBUFS;
}
net_buf_add_mem(buf, &cp, sizeof(cp));
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_SET_PRIVACY_MODE, buf, NULL);
if (err) {
return err;
}
return 0;
}
static int addr_res_enable(u8_t enable)
{
struct net_buf *buf;
BT_DBG("%s", enable ? "enabled" : "disabled");
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_ADDR_RES_ENABLE, 1);
if (!buf) {
return -ENOBUFS;
}
net_buf_add_u8(buf, enable);
return bt_hci_cmd_send_sync(BT_HCI_OP_LE_SET_ADDR_RES_ENABLE,
buf, NULL);
}
static int hci_id_add(const bt_addr_le_t *addr, u8_t val[16])
{
struct bt_hci_cp_le_add_dev_to_rl *cp;
struct net_buf *buf;
BT_DBG("addr %s", bt_addr_le_str(addr));
buf = bt_hci_cmd_create(BT_HCI_OP_LE_ADD_DEV_TO_RL, sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
bt_addr_le_copy(&cp->peer_id_addr, addr);
memcpy(cp->peer_irk, val, 16);
#if defined(CONFIG_BT_PRIVACY)
memcpy(cp->local_irk, bt_dev.irk, 16);
#else
(void)memset(cp->local_irk, 0, 16);
#endif
return bt_hci_cmd_send_sync(BT_HCI_OP_LE_ADD_DEV_TO_RL, buf, NULL);
}
void bt_id_add(struct bt_keys *keys)
{
bool adv_enabled;
#if defined(CONFIG_BT_OBSERVER)
bool scan_enabled;
#endif /* CONFIG_BT_OBSERVER */
struct bt_conn *conn;
int err;
BT_DBG("addr %s", bt_addr_le_str(&keys->addr));
/* Nothing to be done if host-side resolving is used */
if (!bt_dev.le.rl_size || bt_dev.le.rl_entries > bt_dev.le.rl_size) {
bt_dev.le.rl_entries++;
return;
}
conn = bt_conn_lookup_state_le(NULL, BT_CONN_CONNECT);
if (conn) {
atomic_set_bit(bt_dev.flags, BT_DEV_ID_PENDING);
keys->flags |= BT_KEYS_ID_PENDING_ADD;
bt_conn_unref(conn);
return;
}
adv_enabled = atomic_test_bit(bt_dev.flags, BT_DEV_ADVERTISING);
if (adv_enabled) {
set_advertise_enable(false);
}
#if defined(CONFIG_BT_OBSERVER)
scan_enabled = atomic_test_bit(bt_dev.flags, BT_DEV_SCANNING);
if (scan_enabled) {
set_le_scan_enable(BT_HCI_LE_SCAN_DISABLE);
}
#endif /* CONFIG_BT_OBSERVER */
/* If there are any existing entries address resolution will be on */
if (bt_dev.le.rl_entries) {
err = addr_res_enable(BT_HCI_ADDR_RES_DISABLE);
if (err) {
BT_WARN("Failed to disable address resolution");
goto done;
}
}
if (bt_dev.le.rl_entries == bt_dev.le.rl_size) {
BT_WARN("Resolving list size exceeded. Switching to host.");
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_CLEAR_RL, NULL, NULL);
if (err) {
BT_ERR("Failed to clear resolution list");
goto done;
}
bt_dev.le.rl_entries++;
goto done;
}
err = hci_id_add(&keys->addr, keys->irk.val);
if (err) {
BT_ERR("Failed to add IRK to controller");
goto done;
}
bt_dev.le.rl_entries++;
/*
* According to Core Spec. 5.0 Vol 1, Part A 5.4.5 Privacy Feature
*
* By default, network privacy mode is used when private addresses are
* resolved and generated by the Controller, so advertising packets from
* peer devices that contain private addresses will only be accepted.
* By changing to the device privacy mode device is only concerned about
* its privacy and will accept advertising packets from peer devices
* that contain their identity address as well as ones that contain
* a private address, even if the peer device has distributed its IRK in
* the past.
*/
err = le_set_privacy_mode(&keys->addr, BT_HCI_LE_PRIVACY_MODE_DEVICE);
if (err) {
BT_ERR("Failed to set privacy mode");
goto done;
}
done:
addr_res_enable(BT_HCI_ADDR_RES_ENABLE);
#if defined(CONFIG_BT_OBSERVER)
if (scan_enabled) {
set_le_scan_enable(BT_HCI_LE_SCAN_ENABLE);
}
#endif /* CONFIG_BT_OBSERVER */
if (adv_enabled) {
set_advertise_enable(true);
}
}
static void keys_add_id(struct bt_keys *keys, void *data)
{
hci_id_add(&keys->addr, keys->irk.val);
}
void bt_id_del(struct bt_keys *keys)
{
struct bt_hci_cp_le_rem_dev_from_rl *cp;
bool adv_enabled;
#if defined(CONFIG_BT_OBSERVER)
bool scan_enabled;
#endif /* CONFIG_BT_OBSERVER */
struct bt_conn *conn;
struct net_buf *buf;
int err;
BT_DBG("addr %s", bt_addr_le_str(&keys->addr));
if (!bt_dev.le.rl_size ||
bt_dev.le.rl_entries > bt_dev.le.rl_size + 1) {
bt_dev.le.rl_entries--;
return;
}
conn = bt_conn_lookup_state_le(NULL, BT_CONN_CONNECT);
if (conn) {
atomic_set_bit(bt_dev.flags, BT_DEV_ID_PENDING);
keys->flags |= BT_KEYS_ID_PENDING_DEL;
bt_conn_unref(conn);
return;
}
adv_enabled = atomic_test_bit(bt_dev.flags, BT_DEV_ADVERTISING);
if (adv_enabled) {
set_advertise_enable(false);
}
#if defined(CONFIG_BT_OBSERVER)
scan_enabled = atomic_test_bit(bt_dev.flags, BT_DEV_SCANNING);
if (scan_enabled) {
set_le_scan_enable(BT_HCI_LE_SCAN_DISABLE);
}
#endif /* CONFIG_BT_OBSERVER */
err = addr_res_enable(BT_HCI_ADDR_RES_DISABLE);
if (err) {
BT_ERR("Disabling address resolution failed (err %d)", err);
goto done;
}
/* We checked size + 1 earlier, so here we know we can fit again */
if (bt_dev.le.rl_entries > bt_dev.le.rl_size) {
bt_dev.le.rl_entries--;
keys->keys &= ~BT_KEYS_IRK;
bt_keys_foreach(BT_KEYS_IRK, keys_add_id, NULL);
goto done;
}
buf = bt_hci_cmd_create(BT_HCI_OP_LE_REM_DEV_FROM_RL, sizeof(*cp));
if (!buf) {
goto done;
}
cp = net_buf_add(buf, sizeof(*cp));
bt_addr_le_copy(&cp->peer_id_addr, &keys->addr);
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_REM_DEV_FROM_RL, buf, NULL);
if (err) {
BT_ERR("Failed to remove IRK from controller");
goto done;
}
bt_dev.le.rl_entries--;
done:
/* Only re-enable if there are entries to do resolving with */
if (bt_dev.le.rl_entries) {
addr_res_enable(BT_HCI_ADDR_RES_ENABLE);
}
#if defined(CONFIG_BT_OBSERVER)
if (scan_enabled) {
set_le_scan_enable(BT_HCI_LE_SCAN_ENABLE);
}
#endif /* CONFIG_BT_OBSERVER */
if (adv_enabled) {
set_advertise_enable(true);
}
}
static void update_sec_level(struct bt_conn *conn)
{
if (!conn->encrypt) {
conn->sec_level = BT_SECURITY_LOW;
return;
}
if (conn->le.keys && (conn->le.keys->flags & BT_KEYS_AUTHENTICATED)) {
if (conn->le.keys->flags & BT_KEYS_SC &&
conn->le.keys->enc_size == BT_SMP_MAX_ENC_KEY_SIZE) {
conn->sec_level = BT_SECURITY_FIPS;
} else {
conn->sec_level = BT_SECURITY_HIGH;
}
} else {
conn->sec_level = BT_SECURITY_MEDIUM;
}
if (conn->required_sec_level > conn->sec_level) {
BT_ERR("Failed to set required security level");
bt_conn_disconnect(conn, BT_HCI_ERR_AUTHENTICATION_FAIL);
}
}
#endif /* CONFIG_BT_SMP */
#if defined(CONFIG_BT_SMP) || defined(CONFIG_BT_BREDR)
static void hci_encrypt_change(struct net_buf *buf)
{
struct bt_hci_evt_encrypt_change *evt = (void *)buf->data;
u16_t handle = sys_le16_to_cpu(evt->handle);
struct bt_conn *conn;
BT_DBG("status %u handle %u encrypt 0x%02x", evt->status, handle,
evt->encrypt);
conn = bt_conn_lookup_handle(handle);
if (!conn) {
BT_ERR("Unable to look up conn with handle %u", handle);
return;
}
if (evt->status) {
/* TODO report error */
if (conn->type == BT_CONN_TYPE_LE) {
/* reset required security level in case of error */
conn->required_sec_level = conn->sec_level;
#if defined(CONFIG_BT_BREDR)
} else {
bt_l2cap_encrypt_change(conn, evt->status);
reset_pairing(conn);
#endif /* CONFIG_BT_BREDR */
}
bt_conn_unref(conn);
return;
}
conn->encrypt = evt->encrypt;
#if defined(CONFIG_BT_SMP)
if (conn->type == BT_CONN_TYPE_LE) {
/*
* we update keys properties only on successful encryption to
* avoid losing valid keys if encryption was not successful.
*
* Update keys with last pairing info for proper sec level
* update. This is done only for LE transport, for BR/EDR keys
* are updated on HCI 'Link Key Notification Event'
*/
if (conn->encrypt) {
bt_smp_update_keys(conn);
}
update_sec_level(conn);
}
#endif /* CONFIG_BT_SMP */
#if defined(CONFIG_BT_BREDR)
if (conn->type == BT_CONN_TYPE_BR) {
update_sec_level_br(conn);
if (IS_ENABLED(CONFIG_BT_SMP)) {
/*
* Start SMP over BR/EDR if we are pairing and are
* master on the link
*/
if (atomic_test_bit(conn->flags, BT_CONN_BR_PAIRING) &&
conn->role == BT_CONN_ROLE_MASTER) {
bt_smp_br_send_pairing_req(conn);
}
}
reset_pairing(conn);
}
#endif /* CONFIG_BT_BREDR */
bt_l2cap_encrypt_change(conn, evt->status);
bt_conn_security_changed(conn);
bt_conn_unref(conn);
}
static void hci_encrypt_key_refresh_complete(struct net_buf *buf)
{
struct bt_hci_evt_encrypt_key_refresh_complete *evt = (void *)buf->data;
struct bt_conn *conn;
u16_t handle;
handle = sys_le16_to_cpu(evt->handle);
BT_DBG("status %u handle %u", evt->status, handle);
conn = bt_conn_lookup_handle(handle);
if (!conn) {
BT_ERR("Unable to look up conn with handle %u", handle);
return;
}
if (evt->status) {
bt_l2cap_encrypt_change(conn, evt->status);
return;
}
/*
* Update keys with last pairing info for proper sec level update.
* This is done only for LE transport. For BR/EDR transport keys are
* updated on HCI 'Link Key Notification Event', therefore update here
* only security level based on available keys and encryption state.
*/
#if defined(CONFIG_BT_SMP)
if (conn->type == BT_CONN_TYPE_LE) {
bt_smp_update_keys(conn);
update_sec_level(conn);
}
#endif /* CONFIG_BT_SMP */
#if defined(CONFIG_BT_BREDR)
if (conn->type == BT_CONN_TYPE_BR) {
update_sec_level_br(conn);
}
#endif /* CONFIG_BT_BREDR */
bt_l2cap_encrypt_change(conn, evt->status);
bt_conn_security_changed(conn);
bt_conn_unref(conn);
}
#endif /* CONFIG_BT_SMP || CONFIG_BT_BREDR */
#if defined(CONFIG_BT_SMP)
static void le_ltk_neg_reply(u16_t handle)
{
struct bt_hci_cp_le_ltk_req_neg_reply *cp;
struct net_buf *buf;
buf = bt_hci_cmd_create(BT_HCI_OP_LE_LTK_REQ_NEG_REPLY, sizeof(*cp));
if (!buf) {
BT_ERR("Out of command buffers");
return;
}
cp = net_buf_add(buf, sizeof(*cp));
cp->handle = handle;
bt_hci_cmd_send(BT_HCI_OP_LE_LTK_REQ_NEG_REPLY, buf);
}
static void le_ltk_request(struct net_buf *buf)
{
struct bt_hci_evt_le_ltk_request *evt = (void *)buf->data;
struct bt_hci_cp_le_ltk_req_reply *cp;
struct bt_conn *conn;
u16_t handle;
u8_t tk[16];
handle = sys_le16_to_cpu(evt->handle);
BT_DBG("handle %u", handle);
conn = bt_conn_lookup_handle(handle);
if (!conn) {
BT_ERR("Unable to lookup conn for handle %u", handle);
return;
}
/*
* if TK is present use it, that means pairing is in progress and
* we should use new TK for encryption
*
* Both legacy STK and LE SC LTK have rand and ediv equal to zero.
*/
if (evt->rand == 0U && evt->ediv == 0U && bt_smp_get_tk(conn, tk)) {
buf = bt_hci_cmd_create(BT_HCI_OP_LE_LTK_REQ_REPLY,
sizeof(*cp));
if (!buf) {
BT_ERR("Out of command buffers");
goto done;
}
cp = net_buf_add(buf, sizeof(*cp));
cp->handle = evt->handle;
memcpy(cp->ltk, tk, sizeof(cp->ltk));
bt_hci_cmd_send(BT_HCI_OP_LE_LTK_REQ_REPLY, buf);
goto done;
}
if (!conn->le.keys) {
conn->le.keys = bt_keys_find(BT_KEYS_LTK_P256, conn->id,
&conn->le.dst);
if (!conn->le.keys) {
conn->le.keys = bt_keys_find(BT_KEYS_SLAVE_LTK,
conn->id, &conn->le.dst);
}
}
if (conn->le.keys && (conn->le.keys->keys & BT_KEYS_LTK_P256) &&
evt->rand == 0U && evt->ediv == 0U) {
buf = bt_hci_cmd_create(BT_HCI_OP_LE_LTK_REQ_REPLY,
sizeof(*cp));
if (!buf) {
BT_ERR("Out of command buffers");
goto done;
}
cp = net_buf_add(buf, sizeof(*cp));
cp->handle = evt->handle;
/* use only enc_size bytes of key for encryption */
memcpy(cp->ltk, conn->le.keys->ltk.val,
conn->le.keys->enc_size);
if (conn->le.keys->enc_size < sizeof(cp->ltk)) {
(void)memset(cp->ltk + conn->le.keys->enc_size, 0,
sizeof(cp->ltk) - conn->le.keys->enc_size);
}
bt_hci_cmd_send(BT_HCI_OP_LE_LTK_REQ_REPLY, buf);
goto done;
}
#if !defined(CONFIG_BT_SMP_SC_PAIR_ONLY)
if (conn->le.keys && (conn->le.keys->keys & BT_KEYS_SLAVE_LTK) &&
!memcmp(conn->le.keys->slave_ltk.rand, &evt->rand, 8) &&
!memcmp(conn->le.keys->slave_ltk.ediv, &evt->ediv, 2)) {
buf = bt_hci_cmd_create(BT_HCI_OP_LE_LTK_REQ_REPLY,
sizeof(*cp));
if (!buf) {
BT_ERR("Out of command buffers");
goto done;
}
cp = net_buf_add(buf, sizeof(*cp));
cp->handle = evt->handle;
/* use only enc_size bytes of key for encryption */
memcpy(cp->ltk, conn->le.keys->slave_ltk.val,
conn->le.keys->enc_size);
if (conn->le.keys->enc_size < sizeof(cp->ltk)) {
(void)memset(cp->ltk + conn->le.keys->enc_size, 0,
sizeof(cp->ltk) - conn->le.keys->enc_size);
}
bt_hci_cmd_send(BT_HCI_OP_LE_LTK_REQ_REPLY, buf);
goto done;
}
#endif /* !CONFIG_BT_SMP_SC_PAIR_ONLY */
le_ltk_neg_reply(evt->handle);
done:
bt_conn_unref(conn);
}
#endif /* CONFIG_BT_SMP */
#if defined(CONFIG_BT_ECC)
static void le_pkey_complete(struct net_buf *buf)
{
struct bt_hci_evt_le_p256_public_key_complete *evt = (void *)buf->data;
struct bt_pub_key_cb *cb;
BT_DBG("status: 0x%x", evt->status);
atomic_clear_bit(bt_dev.flags, BT_DEV_PUB_KEY_BUSY);
if (!evt->status) {
memcpy(pub_key, evt->key, 64);
atomic_set_bit(bt_dev.flags, BT_DEV_HAS_PUB_KEY);
}
for (cb = pub_key_cb; cb; cb = cb->_next) {
cb->func(evt->status ? NULL : evt->key);
}
}
static void le_dhkey_complete(struct net_buf *buf)
{
struct bt_hci_evt_le_generate_dhkey_complete *evt = (void *)buf->data;
BT_DBG("status: 0x%x", evt->status);
if (dh_key_cb) {
dh_key_cb(evt->status ? NULL : evt->dhkey);
dh_key_cb = NULL;
}
}
#endif /* CONFIG_BT_ECC */
static void hci_reset_complete(struct net_buf *buf)
{
u8_t status = buf->data[0];
atomic_t flags;
BT_DBG("status %u", status);
if (status) {
return;
}
scan_dev_found_cb = NULL;
#if defined(CONFIG_BT_BREDR)
discovery_cb = NULL;
discovery_results = NULL;
discovery_results_size = 0;
discovery_results_count = 0;
#endif /* CONFIG_BT_BREDR */
flags = (atomic_get(bt_dev.flags) & BT_DEV_PERSISTENT_FLAGS);
atomic_set(bt_dev.flags, flags);
}
static void hci_cmd_done(u16_t opcode, u8_t status, struct net_buf *buf)
{
BT_DBG("opcode 0x%04x status 0x%02x buf %p", opcode, status, buf);
if (net_buf_pool_get(buf->pool_id) != &hci_cmd_pool) {
BT_WARN("opcode 0x%04x pool id %u pool %p != &hci_cmd_pool %p",
opcode, buf->pool_id, net_buf_pool_get(buf->pool_id),
&hci_cmd_pool);
return;
}
if (cmd(buf)->opcode != opcode) {
BT_WARN("OpCode 0x%04x completed instead of expected 0x%04x",
opcode, cmd(buf)->opcode);
}
/* If the command was synchronous wake up bt_hci_cmd_send_sync() */
if (cmd(buf)->sync) {
cmd(buf)->status = status;
k_sem_give(cmd(buf)->sync);
}
}
static void hci_cmd_complete(struct net_buf *buf)
{
struct bt_hci_evt_cmd_complete *evt;
u8_t status, ncmd;
u16_t opcode;
evt = net_buf_pull_mem(buf, sizeof(*evt));
ncmd = evt->ncmd;
opcode = sys_le16_to_cpu(evt->opcode);
BT_DBG("opcode 0x%04x", opcode);
/* All command return parameters have a 1-byte status in the
* beginning, so we can safely make this generalization.
*/
status = buf->data[0];
hci_cmd_done(opcode, status, buf);
/* Allow next command to be sent */
if (ncmd) {
k_sem_give(&bt_dev.ncmd_sem);
}
}
static void hci_cmd_status(struct net_buf *buf)
{
struct bt_hci_evt_cmd_status *evt;
u16_t opcode;
u8_t ncmd;
evt = net_buf_pull_mem(buf, sizeof(*evt));
opcode = sys_le16_to_cpu(evt->opcode);
ncmd = evt->ncmd;
BT_DBG("opcode 0x%04x", opcode);
hci_cmd_done(opcode, evt->status, buf);
/* Allow next command to be sent */
if (ncmd) {
k_sem_give(&bt_dev.ncmd_sem);
}
}
#if defined(CONFIG_BT_OBSERVER)
static int start_le_scan(u8_t scan_type, u16_t interval, u16_t window)
{
struct bt_hci_cp_le_set_scan_param set_param;
struct net_buf *buf;
int err;
(void)memset(&set_param, 0, sizeof(set_param));
set_param.scan_type = scan_type;
/* for the rest parameters apply default values according to
* spec 4.2, vol2, part E, 7.8.10
*/
set_param.interval = sys_cpu_to_le16(interval);
set_param.window = sys_cpu_to_le16(window);
set_param.filter_policy = 0x00;
if (IS_ENABLED(CONFIG_BT_PRIVACY)) {
err = le_set_private_addr(BT_ID_DEFAULT);
if (err) {
return err;
}
if (BT_FEAT_LE_PRIVACY(bt_dev.le.features)) {
set_param.addr_type = BT_HCI_OWN_ADDR_RPA_OR_RANDOM;
} else {
set_param.addr_type = BT_ADDR_LE_RANDOM;
}
} else {
set_param.addr_type = bt_dev.id_addr[0].type;
/* Use NRPA unless identity has been explicitly requested
* (through Kconfig), or if there is no advertising ongoing.
*/
if (!IS_ENABLED(CONFIG_BT_SCAN_WITH_IDENTITY) &&
scan_type == BT_HCI_LE_SCAN_ACTIVE &&
!atomic_test_bit(bt_dev.flags, BT_DEV_ADVERTISING)) {
err = le_set_private_addr(BT_ID_DEFAULT);
if (err) {
return err;
}
set_param.addr_type = BT_ADDR_LE_RANDOM;
} else if (set_param.addr_type == BT_ADDR_LE_RANDOM) {
set_random_address(&bt_dev.id_addr[0].a);
}
}
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_SCAN_PARAM, sizeof(set_param));
if (!buf) {
return -ENOBUFS;
}
net_buf_add_mem(buf, &set_param, sizeof(set_param));
bt_hci_cmd_send(BT_HCI_OP_LE_SET_SCAN_PARAM, buf);
err = set_le_scan_enable(BT_HCI_LE_SCAN_ENABLE);
if (err) {
return err;
}
atomic_set_bit_to(bt_dev.flags, BT_DEV_ACTIVE_SCAN,
scan_type == BT_HCI_LE_SCAN_ACTIVE);
return 0;
}
int bt_le_scan_update(bool fast_scan)
{
if (atomic_test_bit(bt_dev.flags, BT_DEV_EXPLICIT_SCAN)) {
return 0;
}
if (atomic_test_bit(bt_dev.flags, BT_DEV_SCANNING)) {
int err;
err = set_le_scan_enable(BT_HCI_LE_SCAN_DISABLE);
if (err) {
return err;
}
}
if (IS_ENABLED(CONFIG_BT_CENTRAL)) {
u16_t interval, window;
struct bt_conn *conn;
/* don't restart scan if we have pending connection */
conn = bt_conn_lookup_state_le(NULL, BT_CONN_CONNECT);
if (conn) {
bt_conn_unref(conn);
return 0;
}
conn = bt_conn_lookup_state_le(NULL, BT_CONN_CONNECT_SCAN);
if (!conn) {
return 0;
}
atomic_set_bit(bt_dev.flags, BT_DEV_SCAN_FILTER_DUP);
bt_conn_unref(conn);
if (fast_scan) {
interval = BT_GAP_SCAN_FAST_INTERVAL;
window = BT_GAP_SCAN_FAST_WINDOW;
} else {
interval = CONFIG_BT_BACKGROUND_SCAN_INTERVAL;
window = CONFIG_BT_BACKGROUND_SCAN_WINDOW;
}
return start_le_scan(BT_HCI_LE_SCAN_PASSIVE, interval, window);
}
return 0;
}
void bt_data_parse(struct net_buf_simple *ad,
bool (*func)(struct bt_data *data, void *user_data),
void *user_data)
{
while (ad->len > 1) {
struct bt_data data;
u8_t len;
len = net_buf_simple_pull_u8(ad);
if (len == 0U) {
/* Early termination */
return;
}
if (len > ad->len) {
BT_WARN("Malformed data");
return;
}
data.type = net_buf_simple_pull_u8(ad);
data.data_len = len - 1;
data.data = ad->data;
if (!func(&data, user_data)) {
return;
}
net_buf_simple_pull(ad, len - 1);
}
}
static void le_adv_report(struct net_buf *buf)
{
u8_t num_reports = net_buf_pull_u8(buf);
struct bt_hci_evt_le_advertising_info *info;
BT_DBG("Adv number of reports %u", num_reports);
while (num_reports--) {
bt_addr_le_t id_addr;
s8_t rssi;
if (buf->len < sizeof(*info)) {
BT_ERR("Unexpected end of buffer");
break;
}
info = net_buf_pull_mem(buf, sizeof(*info));
rssi = info->data[info->length];
BT_DBG("%s event %u, len %u, rssi %d dBm",
bt_addr_le_str(&info->addr),
info->evt_type, info->length, rssi);
if (info->addr.type == BT_ADDR_LE_PUBLIC_ID ||
info->addr.type == BT_ADDR_LE_RANDOM_ID) {
bt_addr_le_copy(&id_addr, &info->addr);
id_addr.type -= BT_ADDR_LE_PUBLIC_ID;
} else {
bt_addr_le_copy(&id_addr,
find_id_addr(bt_dev.adv_id,
&info->addr));
}
if (scan_dev_found_cb) {
struct net_buf_simple_state state;
net_buf_simple_save(&buf->b, &state);
buf->len = info->length;
scan_dev_found_cb(&id_addr, rssi, info->evt_type,
&buf->b);
net_buf_simple_restore(&buf->b, &state);
}
#if defined(CONFIG_BT_CENTRAL)
check_pending_conn(&id_addr, &info->addr, info->evt_type);
#endif /* CONFIG_BT_CENTRAL */
net_buf_pull(buf, info->length + sizeof(rssi));
}
}
#endif /* CONFIG_BT_OBSERVER */
#if defined(CONFIG_BT_HCI_VS_EVT_USER)
int bt_hci_register_vnd_evt_cb(bt_hci_vnd_evt_cb_t cb)
{
hci_vnd_evt_cb = cb;
return 0;
}
#endif /* CONFIG_BT_HCI_VS_EVT_USER */
static void hci_vendor_event(struct net_buf *buf)
{
bool handled = false;
#if defined(CONFIG_BT_HCI_VS_EVT_USER)
if (hci_vnd_evt_cb) {
struct net_buf_simple_state state;
net_buf_simple_save(&buf->b, &state);
handled = hci_vnd_evt_cb(&buf->b);
net_buf_simple_restore(&buf->b, &state);
}
#endif /* CONFIG_BT_HCI_VS_EVT_USER */
if (IS_ENABLED(CONFIG_BT_HCI_VS_EXT) && !handled) {
/* do nothing at present time */
BT_WARN("Unhandled vendor-specific event: %s",
bt_hex(buf->data, buf->len));
}
}
static const struct event_handler meta_events[] = {
#if defined(CONFIG_BT_OBSERVER)
EVENT_HANDLER(BT_HCI_EVT_LE_ADVERTISING_REPORT, le_adv_report,
sizeof(struct bt_hci_evt_le_advertising_report)),
#endif /* CONFIG_BT_OBSERVER */
#if defined(CONFIG_BT_CONN)
EVENT_HANDLER(BT_HCI_EVT_LE_CONN_COMPLETE, le_legacy_conn_complete,
sizeof(struct bt_hci_evt_le_conn_complete)),
EVENT_HANDLER(BT_HCI_EVT_LE_ENH_CONN_COMPLETE, le_enh_conn_complete,
sizeof(struct bt_hci_evt_le_enh_conn_complete)),
EVENT_HANDLER(BT_HCI_EVT_LE_CONN_UPDATE_COMPLETE,
le_conn_update_complete,
sizeof(struct bt_hci_evt_le_conn_update_complete)),
EVENT_HANDLER(BT_HCI_EV_LE_REMOTE_FEAT_COMPLETE,
le_remote_feat_complete,
sizeof(struct bt_hci_evt_le_remote_feat_complete)),
EVENT_HANDLER(BT_HCI_EVT_LE_CONN_PARAM_REQ, le_conn_param_req,
sizeof(struct bt_hci_evt_le_conn_param_req)),
#if defined(CONFIG_BT_DATA_LEN_UPDATE)
EVENT_HANDLER(BT_HCI_EVT_LE_DATA_LEN_CHANGE, le_data_len_change,
sizeof(struct bt_hci_evt_le_data_len_change)),
#endif /* CONFIG_BT_DATA_LEN_UPDATE */
#if defined(CONFIG_BT_PHY_UPDATE)
EVENT_HANDLER(BT_HCI_EVT_LE_PHY_UPDATE_COMPLETE,
le_phy_update_complete,
sizeof(struct bt_hci_evt_le_phy_update_complete)),
#endif /* CONFIG_BT_PHY_UPDATE */
#endif /* CONFIG_BT_CONN */
#if defined(CONFIG_BT_SMP)
EVENT_HANDLER(BT_HCI_EVT_LE_LTK_REQUEST, le_ltk_request,
sizeof(struct bt_hci_evt_le_ltk_request)),
#endif /* CONFIG_BT_SMP */
#if defined(CONFIG_BT_ECC)
EVENT_HANDLER(BT_HCI_EVT_LE_P256_PUBLIC_KEY_COMPLETE, le_pkey_complete,
sizeof(struct bt_hci_evt_le_p256_public_key_complete)),
EVENT_HANDLER(BT_HCI_EVT_LE_GENERATE_DHKEY_COMPLETE, le_dhkey_complete,
sizeof(struct bt_hci_evt_le_generate_dhkey_complete)),
#endif /* CONFIG_BT_SMP */
};
static void hci_le_meta_event(struct net_buf *buf)
{
struct bt_hci_evt_le_meta_event *evt;
evt = net_buf_pull_mem(buf, sizeof(*evt));
BT_DBG("subevent 0x%02x", evt->subevent);
handle_event(evt->subevent, buf, meta_events, ARRAY_SIZE(meta_events));
}
static const struct event_handler normal_events[] = {
EVENT_HANDLER(BT_HCI_EVT_VENDOR, hci_vendor_event,
sizeof(struct bt_hci_evt_vs)),
EVENT_HANDLER(BT_HCI_EVT_LE_META_EVENT, hci_le_meta_event,
sizeof(struct bt_hci_evt_le_meta_event)),
#if defined(CONFIG_BT_BREDR)
EVENT_HANDLER(BT_HCI_EVT_CONN_REQUEST, conn_req,
sizeof(struct bt_hci_evt_conn_request)),
EVENT_HANDLER(BT_HCI_EVT_CONN_COMPLETE, conn_complete,
sizeof(struct bt_hci_evt_conn_complete)),
EVENT_HANDLER(BT_HCI_EVT_PIN_CODE_REQ, pin_code_req,
sizeof(struct bt_hci_evt_pin_code_req)),
EVENT_HANDLER(BT_HCI_EVT_LINK_KEY_NOTIFY, link_key_notify,
sizeof(struct bt_hci_evt_link_key_notify)),
EVENT_HANDLER(BT_HCI_EVT_LINK_KEY_REQ, link_key_req,
sizeof(struct bt_hci_evt_link_key_req)),
EVENT_HANDLER(BT_HCI_EVT_IO_CAPA_RESP, io_capa_resp,
sizeof(struct bt_hci_evt_io_capa_resp)),
EVENT_HANDLER(BT_HCI_EVT_IO_CAPA_REQ, io_capa_req,
sizeof(struct bt_hci_evt_io_capa_req)),
EVENT_HANDLER(BT_HCI_EVT_SSP_COMPLETE, ssp_complete,
sizeof(struct bt_hci_evt_ssp_complete)),
EVENT_HANDLER(BT_HCI_EVT_USER_CONFIRM_REQ, user_confirm_req,
sizeof(struct bt_hci_evt_user_confirm_req)),
EVENT_HANDLER(BT_HCI_EVT_USER_PASSKEY_NOTIFY, user_passkey_notify,
sizeof(struct bt_hci_evt_user_passkey_notify)),
EVENT_HANDLER(BT_HCI_EVT_USER_PASSKEY_REQ, user_passkey_req,
sizeof(struct bt_hci_evt_user_passkey_req)),
EVENT_HANDLER(BT_HCI_EVT_INQUIRY_COMPLETE, inquiry_complete,
sizeof(struct bt_hci_evt_inquiry_complete)),
EVENT_HANDLER(BT_HCI_EVT_INQUIRY_RESULT_WITH_RSSI,
inquiry_result_with_rssi,
sizeof(struct bt_hci_evt_inquiry_result_with_rssi)),
EVENT_HANDLER(BT_HCI_EVT_EXTENDED_INQUIRY_RESULT,
extended_inquiry_result,
sizeof(struct bt_hci_evt_extended_inquiry_result)),
EVENT_HANDLER(BT_HCI_EVT_REMOTE_NAME_REQ_COMPLETE,
remote_name_request_complete,
sizeof(struct bt_hci_evt_remote_name_req_complete)),
EVENT_HANDLER(BT_HCI_EVT_AUTH_COMPLETE, auth_complete,
sizeof(struct bt_hci_evt_auth_complete)),
EVENT_HANDLER(BT_HCI_EVT_REMOTE_FEATURES,
read_remote_features_complete,
sizeof(struct bt_hci_evt_remote_features)),
EVENT_HANDLER(BT_HCI_EVT_REMOTE_EXT_FEATURES,
read_remote_ext_features_complete,
sizeof(struct bt_hci_evt_remote_ext_features)),
EVENT_HANDLER(BT_HCI_EVT_ROLE_CHANGE, role_change,
sizeof(struct bt_hci_evt_role_change)),
EVENT_HANDLER(BT_HCI_EVT_SYNC_CONN_COMPLETE, synchronous_conn_complete,
sizeof(struct bt_hci_evt_sync_conn_complete)),
#endif /* CONFIG_BT_BREDR */
#if defined(CONFIG_BT_CONN)
EVENT_HANDLER(BT_HCI_EVT_DISCONN_COMPLETE, hci_disconn_complete,
sizeof(struct bt_hci_evt_disconn_complete)),
#endif /* CONFIG_BT_CONN */
#if defined(CONFIG_BT_SMP) || defined(CONFIG_BT_BREDR)
EVENT_HANDLER(BT_HCI_EVT_ENCRYPT_CHANGE, hci_encrypt_change,
sizeof(struct bt_hci_evt_encrypt_change)),
EVENT_HANDLER(BT_HCI_EVT_ENCRYPT_KEY_REFRESH_COMPLETE,
hci_encrypt_key_refresh_complete,
sizeof(struct bt_hci_evt_encrypt_key_refresh_complete)),
#endif /* CONFIG_BT_SMP || CONFIG_BT_BREDR */
};
static void hci_event(struct net_buf *buf)
{
struct bt_hci_evt_hdr *hdr;
BT_ASSERT(buf->len >= sizeof(*hdr));
hdr = net_buf_pull_mem(buf, sizeof(*hdr));
BT_DBG("event 0x%02x", hdr->evt);
BT_ASSERT(!bt_hci_evt_is_prio(hdr->evt));
handle_event(hdr->evt, buf, normal_events, ARRAY_SIZE(normal_events));
net_buf_unref(buf);
}
static void send_cmd(void)
{
struct net_buf *buf;
int err;
/* Get next command */
BT_DBG("calling net_buf_get");
buf = net_buf_get(&bt_dev.cmd_tx_queue, K_NO_WAIT);
BT_ASSERT(buf);
/* Wait until ncmd > 0 */
BT_DBG("calling sem_take_wait");
k_sem_take(&bt_dev.ncmd_sem, K_FOREVER);
/* Clear out any existing sent command */
if (bt_dev.sent_cmd) {
BT_ERR("Uncleared pending sent_cmd");
net_buf_unref(bt_dev.sent_cmd);
bt_dev.sent_cmd = NULL;
}
bt_dev.sent_cmd = net_buf_ref(buf);
BT_DBG("Sending command 0x%04x (buf %p) to driver",
cmd(buf)->opcode, buf);
err = bt_send(buf);
if (err) {
BT_ERR("Unable to send to driver (err %d)", err);
k_sem_give(&bt_dev.ncmd_sem);
hci_cmd_done(cmd(buf)->opcode, BT_HCI_ERR_UNSPECIFIED,
NULL);
net_buf_unref(bt_dev.sent_cmd);
bt_dev.sent_cmd = NULL;
net_buf_unref(buf);
}
}
static void process_events(struct k_poll_event *ev, int count)
{
BT_DBG("count %d", count);
for (; count; ev++, count--) {
BT_DBG("ev->state %u", ev->state);
switch (ev->state) {
case K_POLL_STATE_SIGNALED:
break;
case K_POLL_STATE_FIFO_DATA_AVAILABLE:
if (ev->tag == BT_EVENT_CMD_TX) {
send_cmd();
} else if (IS_ENABLED(CONFIG_BT_CONN)) {
struct bt_conn *conn;
if (ev->tag == BT_EVENT_CONN_TX_NOTIFY) {
conn = CONTAINER_OF(ev->fifo,
struct bt_conn,
tx_notify);
bt_conn_notify_tx(conn);
} else if (ev->tag == BT_EVENT_CONN_TX_QUEUE) {
conn = CONTAINER_OF(ev->fifo,
struct bt_conn,
tx_queue);
bt_conn_process_tx(conn);
}
}
break;
case K_POLL_STATE_NOT_READY:
break;
default:
BT_WARN("Unexpected k_poll event state %u", ev->state);
break;
}
}
}
#if defined(CONFIG_BT_CONN)
/* command FIFO + conn_change signal + MAX_CONN * 2 (tx & tx_notify) */
#define EV_COUNT (2 + (CONFIG_BT_MAX_CONN * 2))
#else
/* command FIFO */
#define EV_COUNT 1
#endif
static void hci_tx_thread(void *p1, void *p2, void *p3)
{
static struct k_poll_event events[EV_COUNT] = {
K_POLL_EVENT_STATIC_INITIALIZER(K_POLL_TYPE_FIFO_DATA_AVAILABLE,
K_POLL_MODE_NOTIFY_ONLY,
&bt_dev.cmd_tx_queue,
BT_EVENT_CMD_TX),
};
BT_DBG("Started");
while (1) {
int ev_count, err;
events[0].state = K_POLL_STATE_NOT_READY;
ev_count = 1;
if (IS_ENABLED(CONFIG_BT_CONN)) {
ev_count += bt_conn_prepare_events(&events[1]);
}
BT_DBG("Calling k_poll with %d events", ev_count);
err = k_poll(events, ev_count, K_FOREVER);
BT_ASSERT(err == 0);
process_events(events, ev_count);
/* Make sure we don't hog the CPU if there's all the time
* some ready events.
*/
k_yield();
}
}
static void read_local_ver_complete(struct net_buf *buf)
{
struct bt_hci_rp_read_local_version_info *rp = (void *)buf->data;
BT_DBG("status %u", rp->status);
bt_dev.hci_version = rp->hci_version;
bt_dev.hci_revision = sys_le16_to_cpu(rp->hci_revision);
bt_dev.lmp_version = rp->lmp_version;
bt_dev.lmp_subversion = sys_le16_to_cpu(rp->lmp_subversion);
bt_dev.manufacturer = sys_le16_to_cpu(rp->manufacturer);
}
static void read_bdaddr_complete(struct net_buf *buf)
{
struct bt_hci_rp_read_bd_addr *rp = (void *)buf->data;
BT_DBG("status %u", rp->status);
if (!bt_addr_cmp(&rp->bdaddr, BT_ADDR_ANY) ||
!bt_addr_cmp(&rp->bdaddr, BT_ADDR_NONE)) {
BT_DBG("Controller has no public address");
return;
}
bt_addr_copy(&bt_dev.id_addr[0].a, &rp->bdaddr);
bt_dev.id_addr[0].type = BT_ADDR_LE_PUBLIC;
bt_dev.id_count = 1U;
}
static void read_le_features_complete(struct net_buf *buf)
{
struct bt_hci_rp_le_read_local_features *rp = (void *)buf->data;
BT_DBG("status %u", rp->status);
memcpy(bt_dev.le.features, rp->features, sizeof(bt_dev.le.features));
}
#if defined(CONFIG_BT_BREDR)
static void read_buffer_size_complete(struct net_buf *buf)
{
struct bt_hci_rp_read_buffer_size *rp = (void *)buf->data;
u16_t pkts;
BT_DBG("status %u", rp->status);
bt_dev.br.mtu = sys_le16_to_cpu(rp->acl_max_len);
pkts = sys_le16_to_cpu(rp->acl_max_num);
BT_DBG("ACL BR/EDR buffers: pkts %u mtu %u", pkts, bt_dev.br.mtu);
k_sem_init(&bt_dev.br.pkts, pkts, pkts);
}
#elif defined(CONFIG_BT_CONN)
static void read_buffer_size_complete(struct net_buf *buf)
{
struct bt_hci_rp_read_buffer_size *rp = (void *)buf->data;
u16_t pkts;
BT_DBG("status %u", rp->status);
/* If LE-side has buffers we can ignore the BR/EDR values */
if (bt_dev.le.mtu) {
return;
}
bt_dev.le.mtu = sys_le16_to_cpu(rp->acl_max_len);
pkts = sys_le16_to_cpu(rp->acl_max_num);
BT_DBG("ACL BR/EDR buffers: pkts %u mtu %u", pkts, bt_dev.le.mtu);
pkts = MIN(pkts, CONFIG_BT_CONN_TX_MAX);
k_sem_init(&bt_dev.le.pkts, pkts, pkts);
}
#endif
#if defined(CONFIG_BT_CONN)
static void le_read_buffer_size_complete(struct net_buf *buf)
{
struct bt_hci_rp_le_read_buffer_size *rp = (void *)buf->data;
u8_t le_max_num;
BT_DBG("status %u", rp->status);
bt_dev.le.mtu = sys_le16_to_cpu(rp->le_max_len);
if (!bt_dev.le.mtu) {
return;
}
BT_DBG("ACL LE buffers: pkts %u mtu %u", rp->le_max_num, bt_dev.le.mtu);
le_max_num = MIN(rp->le_max_num, CONFIG_BT_CONN_TX_MAX);
k_sem_init(&bt_dev.le.pkts, le_max_num, le_max_num);
}
#endif
static void read_supported_commands_complete(struct net_buf *buf)
{
struct bt_hci_rp_read_supported_commands *rp = (void *)buf->data;
BT_DBG("status %u", rp->status);
memcpy(bt_dev.supported_commands, rp->commands,
sizeof(bt_dev.supported_commands));
/*
* Report "LE Read Local P-256 Public Key" and "LE Generate DH Key" as
* supported if TinyCrypt ECC is used for emulation.
*/
if (IS_ENABLED(CONFIG_BT_TINYCRYPT_ECC)) {
bt_dev.supported_commands[34] |= 0x02;
bt_dev.supported_commands[34] |= 0x04;
}
}
static void read_local_features_complete(struct net_buf *buf)
{
struct bt_hci_rp_read_local_features *rp = (void *)buf->data;
BT_DBG("status %u", rp->status);
memcpy(bt_dev.features[0], rp->features, sizeof(bt_dev.features[0]));
}
static void le_read_supp_states_complete(struct net_buf *buf)
{
struct bt_hci_rp_le_read_supp_states *rp = (void *)buf->data;
BT_DBG("status %u", rp->status);
bt_dev.le.states = sys_get_le64(rp->le_states);
}
static int common_init(void)
{
struct net_buf *rsp;
int err;
if (!(bt_dev.drv->quirks & BT_QUIRK_NO_RESET)) {
/* Send HCI_RESET */
err = bt_hci_cmd_send_sync(BT_HCI_OP_RESET, NULL, &rsp);
if (err) {
return err;
}
hci_reset_complete(rsp);
net_buf_unref(rsp);
}
/* Read Local Supported Features */
err = bt_hci_cmd_send_sync(BT_HCI_OP_READ_LOCAL_FEATURES, NULL, &rsp);
if (err) {
return err;
}
read_local_features_complete(rsp);
net_buf_unref(rsp);
/* Read Local Version Information */
err = bt_hci_cmd_send_sync(BT_HCI_OP_READ_LOCAL_VERSION_INFO, NULL,
&rsp);
if (err) {
return err;
}
read_local_ver_complete(rsp);
net_buf_unref(rsp);
/* Read Bluetooth Address */
if (!atomic_test_bit(bt_dev.flags, BT_DEV_USER_ID_ADDR)) {
err = bt_hci_cmd_send_sync(BT_HCI_OP_READ_BD_ADDR, NULL, &rsp);
if (err) {
return err;
}
read_bdaddr_complete(rsp);
net_buf_unref(rsp);
}
/* Read Local Supported Commands */
err = bt_hci_cmd_send_sync(BT_HCI_OP_READ_SUPPORTED_COMMANDS, NULL,
&rsp);
if (err) {
return err;
}
read_supported_commands_complete(rsp);
net_buf_unref(rsp);
if (IS_ENABLED(CONFIG_BT_HOST_CRYPTO)) {
/* Initialize the PRNG so that it is safe to use it later
* on in the initialization process.
*/
err = prng_init();
if (err) {
return err;
}
}
#if defined(CONFIG_BT_HCI_ACL_FLOW_CONTROL)
err = set_flow_control();
if (err) {
return err;
}
#endif /* CONFIG_BT_CONN */
return 0;
}
static int le_set_event_mask(void)
{
struct bt_hci_cp_le_set_event_mask *cp_mask;
struct net_buf *buf;
u64_t mask = 0U;
/* Set LE event mask */
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_EVENT_MASK, sizeof(*cp_mask));
if (!buf) {
return -ENOBUFS;
}
cp_mask = net_buf_add(buf, sizeof(*cp_mask));
mask |= BT_EVT_MASK_LE_ADVERTISING_REPORT;
if (IS_ENABLED(CONFIG_BT_CONN)) {
if (IS_ENABLED(CONFIG_BT_SMP) &&
BT_FEAT_LE_PRIVACY(bt_dev.le.features)) {
mask |= BT_EVT_MASK_LE_ENH_CONN_COMPLETE;
} else {
mask |= BT_EVT_MASK_LE_CONN_COMPLETE;
}
mask |= BT_EVT_MASK_LE_CONN_UPDATE_COMPLETE;
mask |= BT_EVT_MASK_LE_REMOTE_FEAT_COMPLETE;
if (BT_FEAT_LE_CONN_PARAM_REQ_PROC(bt_dev.le.features)) {
mask |= BT_EVT_MASK_LE_CONN_PARAM_REQ;
}
if (IS_ENABLED(CONFIG_BT_DATA_LEN_UPDATE) &&
BT_FEAT_LE_DLE(bt_dev.le.features)) {
mask |= BT_EVT_MASK_LE_DATA_LEN_CHANGE;
}
if (IS_ENABLED(CONFIG_BT_PHY_UPDATE) &&
(BT_FEAT_LE_PHY_2M(bt_dev.le.features) ||
BT_FEAT_LE_PHY_CODED(bt_dev.le.features))) {
mask |= BT_EVT_MASK_LE_PHY_UPDATE_COMPLETE;
}
}
if (IS_ENABLED(CONFIG_BT_SMP) &&
BT_FEAT_LE_ENCR(bt_dev.le.features)) {
mask |= BT_EVT_MASK_LE_LTK_REQUEST;
}
/*
* If "LE Read Local P-256 Public Key" and "LE Generate DH Key" are
* supported we need to enable events generated by those commands.
*/
if (IS_ENABLED(CONFIG_BT_ECC) &&
(BT_CMD_TEST(bt_dev.supported_commands, 34, 1)) &&
(BT_CMD_TEST(bt_dev.supported_commands, 34, 2))) {
mask |= BT_EVT_MASK_LE_P256_PUBLIC_KEY_COMPLETE;
mask |= BT_EVT_MASK_LE_GENERATE_DHKEY_COMPLETE;
}
sys_put_le64(mask, cp_mask->events);
return bt_hci_cmd_send_sync(BT_HCI_OP_LE_SET_EVENT_MASK, buf, NULL);
}
static int le_init(void)
{
struct bt_hci_cp_write_le_host_supp *cp_le;
struct net_buf *buf, *rsp;
int err;
/* For now we only support LE capable controllers */
if (!BT_FEAT_LE(bt_dev.features)) {
BT_ERR("Non-LE capable controller detected!");
return -ENODEV;
}
/* Read Low Energy Supported Features */
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_READ_LOCAL_FEATURES, NULL,
&rsp);
if (err) {
return err;
}
read_le_features_complete(rsp);
net_buf_unref(rsp);
#if defined(CONFIG_BT_CONN)
/* Read LE Buffer Size */
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_READ_BUFFER_SIZE,
NULL, &rsp);
if (err) {
return err;
}
le_read_buffer_size_complete(rsp);
net_buf_unref(rsp);
#endif
if (BT_FEAT_BREDR(bt_dev.features)) {
buf = bt_hci_cmd_create(BT_HCI_OP_LE_WRITE_LE_HOST_SUPP,
sizeof(*cp_le));
if (!buf) {
return -ENOBUFS;
}
cp_le = net_buf_add(buf, sizeof(*cp_le));
/* Explicitly enable LE for dual-mode controllers */
cp_le->le = 0x01;
cp_le->simul = 0x00;
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_WRITE_LE_HOST_SUPP, buf,
NULL);
if (err) {
return err;
}
}
/* Read LE Supported States */
if (BT_CMD_LE_STATES(bt_dev.supported_commands)) {
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_READ_SUPP_STATES, NULL,
&rsp);
if (err) {
return err;
}
le_read_supp_states_complete(rsp);
net_buf_unref(rsp);
}
if (IS_ENABLED(CONFIG_BT_CONN) &&
IS_ENABLED(CONFIG_BT_DATA_LEN_UPDATE) &&
BT_FEAT_LE_DLE(bt_dev.le.features)) {
struct bt_hci_cp_le_write_default_data_len *cp;
struct bt_hci_rp_le_read_max_data_len *rp;
u16_t tx_octets, tx_time;
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_READ_MAX_DATA_LEN, NULL,
&rsp);
if (err) {
return err;
}
rp = (void *)rsp->data;
tx_octets = sys_le16_to_cpu(rp->max_tx_octets);
tx_time = sys_le16_to_cpu(rp->max_tx_time);
net_buf_unref(rsp);
buf = bt_hci_cmd_create(BT_HCI_OP_LE_WRITE_DEFAULT_DATA_LEN,
sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
cp->max_tx_octets = sys_cpu_to_le16(tx_octets);
cp->max_tx_time = sys_cpu_to_le16(tx_time);
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_WRITE_DEFAULT_DATA_LEN,
buf, NULL);
if (err) {
return err;
}
}
#if defined(CONFIG_BT_SMP)
if (BT_FEAT_LE_PRIVACY(bt_dev.le.features)) {
struct bt_hci_rp_le_read_rl_size *rp;
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_READ_RL_SIZE, NULL,
&rsp);
if (err) {
return err;
}
rp = (void *)rsp->data;
BT_DBG("Resolving List size %u", rp->rl_size);
bt_dev.le.rl_size = rp->rl_size;
net_buf_unref(rsp);
}
#endif
return le_set_event_mask();
}
#if defined(CONFIG_BT_BREDR)
static int read_ext_features(void)
{
int i;
/* Read Local Supported Extended Features */
for (i = 1; i < LMP_FEAT_PAGES_COUNT; i++) {
struct bt_hci_cp_read_local_ext_features *cp;
struct bt_hci_rp_read_local_ext_features *rp;
struct net_buf *buf, *rsp;
int err;
buf = bt_hci_cmd_create(BT_HCI_OP_READ_LOCAL_EXT_FEATURES,
sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
cp->page = i;
err = bt_hci_cmd_send_sync(BT_HCI_OP_READ_LOCAL_EXT_FEATURES,
buf, &rsp);
if (err) {
return err;
}
rp = (void *)rsp->data;
memcpy(&bt_dev.features[i], rp->ext_features,
sizeof(bt_dev.features[i]));
if (rp->max_page <= i) {
net_buf_unref(rsp);
break;
}
net_buf_unref(rsp);
}
return 0;
}
void device_supported_pkt_type(void)
{
/* Device supported features and sco packet types */
if (BT_FEAT_HV2_PKT(bt_dev.features)) {
bt_dev.br.esco_pkt_type |= (HCI_PKT_TYPE_ESCO_HV2);
}
if (BT_FEAT_HV3_PKT(bt_dev.features)) {
bt_dev.br.esco_pkt_type |= (HCI_PKT_TYPE_ESCO_HV3);
}
if (BT_FEAT_LMP_ESCO_CAPABLE(bt_dev.features)) {
bt_dev.br.esco_pkt_type |= (HCI_PKT_TYPE_ESCO_EV3);
}
if (BT_FEAT_EV4_PKT(bt_dev.features)) {
bt_dev.br.esco_pkt_type |= (HCI_PKT_TYPE_ESCO_EV4);
}
if (BT_FEAT_EV5_PKT(bt_dev.features)) {
bt_dev.br.esco_pkt_type |= (HCI_PKT_TYPE_ESCO_EV5);
}
if (BT_FEAT_2EV3_PKT(bt_dev.features)) {
bt_dev.br.esco_pkt_type |= (HCI_PKT_TYPE_ESCO_2EV3);
}
if (BT_FEAT_3EV3_PKT(bt_dev.features)) {
bt_dev.br.esco_pkt_type |= (HCI_PKT_TYPE_ESCO_3EV3);
}
if (BT_FEAT_3SLOT_PKT(bt_dev.features)) {
bt_dev.br.esco_pkt_type |= (HCI_PKT_TYPE_ESCO_2EV5 |
HCI_PKT_TYPE_ESCO_3EV5);
}
}
static int br_init(void)
{
struct net_buf *buf;
struct bt_hci_cp_write_ssp_mode *ssp_cp;
struct bt_hci_cp_write_inquiry_mode *inq_cp;
struct bt_hci_write_local_name *name_cp;
int err;
/* Read extended local features */
if (BT_FEAT_EXT_FEATURES(bt_dev.features)) {
err = read_ext_features();
if (err) {
return err;
}
}
/* Add local supported packet types to bt_dev */
device_supported_pkt_type();
/* Get BR/EDR buffer size */
err = bt_hci_cmd_send_sync(BT_HCI_OP_READ_BUFFER_SIZE, NULL, &buf);
if (err) {
return err;
}
read_buffer_size_complete(buf);
net_buf_unref(buf);
/* Set SSP mode */
buf = bt_hci_cmd_create(BT_HCI_OP_WRITE_SSP_MODE, sizeof(*ssp_cp));
if (!buf) {
return -ENOBUFS;
}
ssp_cp = net_buf_add(buf, sizeof(*ssp_cp));
ssp_cp->mode = 0x01;
err = bt_hci_cmd_send_sync(BT_HCI_OP_WRITE_SSP_MODE, buf, NULL);
if (err) {
return err;
}
/* Enable Inquiry results with RSSI or extended Inquiry */
buf = bt_hci_cmd_create(BT_HCI_OP_WRITE_INQUIRY_MODE, sizeof(*inq_cp));
if (!buf) {
return -ENOBUFS;
}
inq_cp = net_buf_add(buf, sizeof(*inq_cp));
inq_cp->mode = 0x02;
err = bt_hci_cmd_send_sync(BT_HCI_OP_WRITE_INQUIRY_MODE, buf, NULL);
if (err) {
return err;
}
/* Set local name */
buf = bt_hci_cmd_create(BT_HCI_OP_WRITE_LOCAL_NAME, sizeof(*name_cp));
if (!buf) {
return -ENOBUFS;
}
name_cp = net_buf_add(buf, sizeof(*name_cp));
strncpy((char *)name_cp->local_name, CONFIG_BT_DEVICE_NAME,
sizeof(name_cp->local_name));
err = bt_hci_cmd_send_sync(BT_HCI_OP_WRITE_LOCAL_NAME, buf, NULL);
if (err) {
return err;
}
/* Set page timeout*/
buf = bt_hci_cmd_create(BT_HCI_OP_WRITE_PAGE_TIMEOUT, sizeof(u16_t));
if (!buf) {
return -ENOBUFS;
}
net_buf_add_le16(buf, CONFIG_BT_PAGE_TIMEOUT);
err = bt_hci_cmd_send_sync(BT_HCI_OP_WRITE_PAGE_TIMEOUT, buf, NULL);
if (err) {
return err;
}
/* Enable BR/EDR SC if supported */
if (BT_FEAT_SC(bt_dev.features)) {
struct bt_hci_cp_write_sc_host_supp *sc_cp;
buf = bt_hci_cmd_create(BT_HCI_OP_WRITE_SC_HOST_SUPP,
sizeof(*sc_cp));
if (!buf) {
return -ENOBUFS;
}
sc_cp = net_buf_add(buf, sizeof(*sc_cp));
sc_cp->sc_support = 0x01;
err = bt_hci_cmd_send_sync(BT_HCI_OP_WRITE_SC_HOST_SUPP, buf,
NULL);
if (err) {
return err;
}
}
return 0;
}
#else
static int br_init(void)
{
#if defined(CONFIG_BT_CONN)
struct net_buf *rsp;
int err;
if (bt_dev.le.mtu) {
return 0;
}
/* Use BR/EDR buffer size if LE reports zero buffers */
err = bt_hci_cmd_send_sync(BT_HCI_OP_READ_BUFFER_SIZE, NULL, &rsp);
if (err) {
return err;
}
read_buffer_size_complete(rsp);
net_buf_unref(rsp);
#endif /* CONFIG_BT_CONN */
return 0;
}
#endif
static int set_event_mask(void)
{
struct bt_hci_cp_set_event_mask *ev;
struct net_buf *buf;
u64_t mask = 0U;
buf = bt_hci_cmd_create(BT_HCI_OP_SET_EVENT_MASK, sizeof(*ev));
if (!buf) {
return -ENOBUFS;
}
ev = net_buf_add(buf, sizeof(*ev));
if (IS_ENABLED(CONFIG_BT_BREDR)) {
/* Since we require LE support, we can count on a
* Bluetooth 4.0 feature set
*/
mask |= BT_EVT_MASK_INQUIRY_COMPLETE;
mask |= BT_EVT_MASK_CONN_COMPLETE;
mask |= BT_EVT_MASK_CONN_REQUEST;
mask |= BT_EVT_MASK_AUTH_COMPLETE;
mask |= BT_EVT_MASK_REMOTE_NAME_REQ_COMPLETE;
mask |= BT_EVT_MASK_REMOTE_FEATURES;
mask |= BT_EVT_MASK_ROLE_CHANGE;
mask |= BT_EVT_MASK_PIN_CODE_REQ;
mask |= BT_EVT_MASK_LINK_KEY_REQ;
mask |= BT_EVT_MASK_LINK_KEY_NOTIFY;
mask |= BT_EVT_MASK_INQUIRY_RESULT_WITH_RSSI;
mask |= BT_EVT_MASK_REMOTE_EXT_FEATURES;
mask |= BT_EVT_MASK_SYNC_CONN_COMPLETE;
mask |= BT_EVT_MASK_EXTENDED_INQUIRY_RESULT;
mask |= BT_EVT_MASK_IO_CAPA_REQ;
mask |= BT_EVT_MASK_IO_CAPA_RESP;
mask |= BT_EVT_MASK_USER_CONFIRM_REQ;
mask |= BT_EVT_MASK_USER_PASSKEY_REQ;
mask |= BT_EVT_MASK_SSP_COMPLETE;
mask |= BT_EVT_MASK_USER_PASSKEY_NOTIFY;
}
mask |= BT_EVT_MASK_HARDWARE_ERROR;
mask |= BT_EVT_MASK_DATA_BUFFER_OVERFLOW;
mask |= BT_EVT_MASK_LE_META_EVENT;
if (IS_ENABLED(CONFIG_BT_CONN)) {
mask |= BT_EVT_MASK_DISCONN_COMPLETE;
mask |= BT_EVT_MASK_REMOTE_VERSION_INFO;
}
if (IS_ENABLED(CONFIG_BT_SMP) &&
BT_FEAT_LE_ENCR(bt_dev.le.features)) {
mask |= BT_EVT_MASK_ENCRYPT_CHANGE;
mask |= BT_EVT_MASK_ENCRYPT_KEY_REFRESH_COMPLETE;
}
sys_put_le64(mask, ev->events);
return bt_hci_cmd_send_sync(BT_HCI_OP_SET_EVENT_MASK, buf, NULL);
}
static inline int create_random_addr(bt_addr_le_t *addr)
{
addr->type = BT_ADDR_LE_RANDOM;
return bt_rand(addr->a.val, 6);
}
int bt_addr_le_create_nrpa(bt_addr_le_t *addr)
{
int err;
err = create_random_addr(addr);
if (err) {
return err;
}
BT_ADDR_SET_NRPA(&addr->a);
return 0;
}
int bt_addr_le_create_static(bt_addr_le_t *addr)
{
int err;
err = create_random_addr(addr);
if (err) {
return err;
}
BT_ADDR_SET_STATIC(&addr->a);
return 0;
}
#if defined(CONFIG_BT_DEBUG)
static const char *ver_str(u8_t ver)
{
const char * const str[] = {
"1.0b", "1.1", "1.2", "2.0", "2.1", "3.0", "4.0", "4.1", "4.2",
"5.0", "5.1",
};
if (ver < ARRAY_SIZE(str)) {
return str[ver];
}
return "unknown";
}
static void bt_dev_show_info(void)
{
int i;
BT_INFO("Identity%s: %s", bt_dev.id_count > 1 ? "[0]" : "",
bt_addr_le_str(&bt_dev.id_addr[0]));
for (i = 1; i < bt_dev.id_count; i++) {
BT_INFO("Identity[%d]: %s",
i, bt_addr_le_str(&bt_dev.id_addr[i]));
}
BT_INFO("HCI: version %s (0x%02x) revision 0x%04x, manufacturer 0x%04x",
ver_str(bt_dev.hci_version), bt_dev.hci_version,
bt_dev.hci_revision, bt_dev.manufacturer);
BT_INFO("LMP: version %s (0x%02x) subver 0x%04x",
ver_str(bt_dev.lmp_version), bt_dev.lmp_version,
bt_dev.lmp_subversion);
}
#else
static inline void bt_dev_show_info(void)
{
}
#endif /* CONFIG_BT_DEBUG */
#if defined(CONFIG_BT_HCI_VS_EXT)
#if defined(CONFIG_BT_DEBUG)
static const char *vs_hw_platform(u16_t platform)
{
static const char * const plat_str[] = {
"reserved", "Intel Corporation", "Nordic Semiconductor",
"NXP Semiconductors" };
if (platform < ARRAY_SIZE(plat_str)) {
return plat_str[platform];
}
return "unknown";
}
static const char *vs_hw_variant(u16_t platform, u16_t variant)
{
static const char * const nordic_str[] = {
"reserved", "nRF51x", "nRF52x"
};
if (platform != BT_HCI_VS_HW_PLAT_NORDIC) {
return "unknown";
}
if (variant < ARRAY_SIZE(nordic_str)) {
return nordic_str[variant];
}
return "unknown";
}
static const char *vs_fw_variant(u8_t variant)
{
static const char * const var_str[] = {
"Standard Bluetooth controller",
"Vendor specific controller",
"Firmware loader",
"Rescue image",
};
if (variant < ARRAY_SIZE(var_str)) {
return var_str[variant];
}
return "unknown";
}
#endif /* CONFIG_BT_DEBUG */
static void hci_vs_init(void)
{
union {
struct bt_hci_rp_vs_read_version_info *info;
struct bt_hci_rp_vs_read_supported_commands *cmds;
struct bt_hci_rp_vs_read_supported_features *feat;
} rp;
struct net_buf *rsp;
int err;
/* If heuristics is enabled, try to guess HCI VS support by looking
* at the HCI version and identity address. We haven't tried to set
* a static random address yet at this point, so the identity will
* either be zeroes or a valid public address.
*/
if (IS_ENABLED(CONFIG_BT_HCI_VS_EXT_DETECT) &&
(bt_dev.hci_version < BT_HCI_VERSION_5_0 ||
(!atomic_test_bit(bt_dev.flags, BT_DEV_USER_ID_ADDR) &&
bt_addr_le_cmp(&bt_dev.id_addr[0], BT_ADDR_LE_ANY)))) {
BT_WARN("Controller doesn't seem to support Zephyr vendor HCI");
return;
}
err = bt_hci_cmd_send_sync(BT_HCI_OP_VS_READ_VERSION_INFO, NULL, &rsp);
if (err) {
BT_WARN("Vendor HCI extensions not available");
return;
}
#if defined(CONFIG_BT_DEBUG)
rp.info = (void *)rsp->data;
BT_INFO("HW Platform: %s (0x%04x)",
vs_hw_platform(sys_le16_to_cpu(rp.info->hw_platform)),
sys_le16_to_cpu(rp.info->hw_platform));
BT_INFO("HW Variant: %s (0x%04x)",
vs_hw_variant(sys_le16_to_cpu(rp.info->hw_platform),
sys_le16_to_cpu(rp.info->hw_variant)),
sys_le16_to_cpu(rp.info->hw_variant));
BT_INFO("Firmware: %s (0x%02x) Version %u.%u Build %u",
vs_fw_variant(rp.info->fw_variant), rp.info->fw_variant,
rp.info->fw_version, sys_le16_to_cpu(rp.info->fw_revision),
sys_le32_to_cpu(rp.info->fw_build));
#endif /* CONFIG_BT_DEBUG */
net_buf_unref(rsp);
err = bt_hci_cmd_send_sync(BT_HCI_OP_VS_READ_SUPPORTED_COMMANDS,
NULL, &rsp);
if (err) {
BT_WARN("Failed to read supported vendor features");
return;
}
rp.cmds = (void *)rsp->data;
memcpy(bt_dev.vs_commands, rp.cmds->commands, BT_DEV_VS_CMDS_MAX);
net_buf_unref(rsp);
err = bt_hci_cmd_send_sync(BT_HCI_OP_VS_READ_SUPPORTED_FEATURES,
NULL, &rsp);
if (err) {
BT_WARN("Failed to read supported vendor commands");
return;
}
rp.feat = (void *)rsp->data;
memcpy(bt_dev.vs_features, rp.feat->features, BT_DEV_VS_FEAT_MAX);
net_buf_unref(rsp);
}
#endif /* CONFIG_BT_HCI_VS_EXT */
static int hci_init(void)
{
int err;
err = common_init();
if (err) {
return err;
}
err = le_init();
if (err) {
return err;
}
if (BT_FEAT_BREDR(bt_dev.features)) {
err = br_init();
if (err) {
return err;
}
} else if (IS_ENABLED(CONFIG_BT_BREDR)) {
BT_ERR("Non-BR/EDR controller detected");
return -EIO;
}
err = set_event_mask();
if (err) {
return err;
}
#if defined(CONFIG_BT_HCI_VS_EXT)
hci_vs_init();
#endif
if (!IS_ENABLED(CONFIG_BT_SETTINGS) && !bt_dev.id_count) {
BT_DBG("No public address. Trying to set static random.");
err = bt_setup_id_addr();
if (err) {
BT_ERR("Unable to set identity address");
return err;
}
}
return 0;
}
int bt_send(struct net_buf *buf)
{
BT_DBG("buf %p len %u type %u", buf, buf->len, bt_buf_get_type(buf));
bt_monitor_send(bt_monitor_opcode(buf), buf->data, buf->len);
if (IS_ENABLED(CONFIG_BT_TINYCRYPT_ECC)) {
return bt_hci_ecc_send(buf);
}
return bt_dev.drv->send(buf);
}
int bt_recv(struct net_buf *buf)
{
bt_monitor_send(bt_monitor_opcode(buf), buf->data, buf->len);
BT_DBG("buf %p len %u", buf, buf->len);
switch (bt_buf_get_type(buf)) {
#if defined(CONFIG_BT_CONN)
case BT_BUF_ACL_IN:
#if defined(CONFIG_BT_RECV_IS_RX_THREAD)
hci_acl(buf);
#else
net_buf_put(&bt_dev.rx_queue, buf);
#endif
return 0;
#endif /* BT_CONN */
case BT_BUF_EVT:
#if defined(CONFIG_BT_RECV_IS_RX_THREAD)
hci_event(buf);
#else
net_buf_put(&bt_dev.rx_queue, buf);
#endif
return 0;
default:
BT_ERR("Invalid buf type %u", bt_buf_get_type(buf));
net_buf_unref(buf);
return -EINVAL;
}
}
static const struct event_handler prio_events[] = {
EVENT_HANDLER(BT_HCI_EVT_CMD_COMPLETE, hci_cmd_complete,
sizeof(struct bt_hci_evt_cmd_complete)),
EVENT_HANDLER(BT_HCI_EVT_CMD_STATUS, hci_cmd_status,
sizeof(struct bt_hci_evt_cmd_status)),
#if defined(CONFIG_BT_CONN)
EVENT_HANDLER(BT_HCI_EVT_NUM_COMPLETED_PACKETS,
hci_num_completed_packets,
sizeof(struct bt_hci_evt_num_completed_packets)),
#endif /* CONFIG_BT_CONN */
};
int bt_recv_prio(struct net_buf *buf)
{
struct bt_hci_evt_hdr *hdr;
bt_monitor_send(bt_monitor_opcode(buf), buf->data, buf->len);
BT_ASSERT(bt_buf_get_type(buf) == BT_BUF_EVT);
BT_ASSERT(buf->len >= sizeof(*hdr));
hdr = net_buf_pull_mem(buf, sizeof(*hdr));
BT_ASSERT(bt_hci_evt_is_prio(hdr->evt));
handle_event(hdr->evt, buf, prio_events, ARRAY_SIZE(prio_events));
net_buf_unref(buf);
return 0;
}
int bt_hci_driver_register(const struct bt_hci_driver *drv)
{
if (bt_dev.drv) {
return -EALREADY;
}
if (!drv->open || !drv->send) {
return -EINVAL;
}
bt_dev.drv = drv;
BT_DBG("Registered %s", drv->name ? drv->name : "");
bt_monitor_new_index(BT_MONITOR_TYPE_PRIMARY, drv->bus,
BT_ADDR_ANY, drv->name ? drv->name : "bt0");
return 0;
}
#if defined(CONFIG_BT_PRIVACY)
static int irk_init(void)
{
if (IS_ENABLED(CONFIG_BT_SETTINGS)) {
BT_DBG("Expecting settings to handle local IRK");
} else {
int err;
err = bt_rand(&bt_dev.irk[0], 16);
if (err) {
return err;
}
BT_WARN("Using temporary IRK");
}
return 0;
}
#endif /* CONFIG_BT_PRIVACY */
void bt_finalize_init(void)
{
atomic_set_bit(bt_dev.flags, BT_DEV_READY);
if (IS_ENABLED(CONFIG_BT_OBSERVER)) {
bt_le_scan_update(false);
}
bt_dev_show_info();
}
static int bt_init(void)
{
int err;
err = hci_init();
if (err) {
return err;
}
if (IS_ENABLED(CONFIG_BT_CONN)) {
err = bt_conn_init();
if (err) {
return err;
}
}
#if defined(CONFIG_BT_PRIVACY)
err = irk_init();
if (err) {
return err;
}
k_delayed_work_init(&bt_dev.rpa_update, rpa_timeout);
#endif
if (IS_ENABLED(CONFIG_BT_SETTINGS)) {
if (!bt_dev.id_count) {
BT_WARN("No ID address. App must call settings_load()");
return 0;
}
atomic_set_bit(bt_dev.flags, BT_DEV_PRESET_ID);
}
bt_finalize_init();
return 0;
}
static void init_work(struct k_work *work)
{
int err;
err = bt_init();
if (ready_cb) {
ready_cb(err);
}
}
#if !defined(CONFIG_BT_RECV_IS_RX_THREAD)
static void hci_rx_thread(void)
{
struct net_buf *buf;
BT_DBG("started");
while (1) {
BT_DBG("calling fifo_get_wait");
buf = net_buf_get(&bt_dev.rx_queue, K_FOREVER);
BT_DBG("buf %p type %u len %u", buf, bt_buf_get_type(buf),
buf->len);
switch (bt_buf_get_type(buf)) {
#if defined(CONFIG_BT_CONN)
case BT_BUF_ACL_IN:
hci_acl(buf);
break;
#endif /* CONFIG_BT_CONN */
case BT_BUF_EVT:
hci_event(buf);
break;
default:
BT_ERR("Unknown buf type %u", bt_buf_get_type(buf));
net_buf_unref(buf);
break;
}
/* Make sure we don't hog the CPU if the rx_queue never
* gets empty.
*/
k_yield();
}
}
#endif /* !CONFIG_BT_RECV_IS_RX_THREAD */
int bt_enable(bt_ready_cb_t cb)
{
int err;
if (!bt_dev.drv) {
BT_ERR("No HCI driver registered");
return -ENODEV;
}
if (atomic_test_and_set_bit(bt_dev.flags, BT_DEV_ENABLE)) {
return -EALREADY;
}
if (IS_ENABLED(CONFIG_BT_SETTINGS)) {
err = bt_settings_init();
if (err) {
return err;
}
} else {
bt_set_name(CONFIG_BT_DEVICE_NAME);
}
ready_cb = cb;
/* TX thread */
k_thread_create(&tx_thread_data, tx_thread_stack,
K_THREAD_STACK_SIZEOF(tx_thread_stack),
hci_tx_thread, NULL, NULL, NULL,
K_PRIO_COOP(CONFIG_BT_HCI_TX_PRIO),
0, K_NO_WAIT);
k_thread_name_set(&tx_thread_data, "BT TX");
#if !defined(CONFIG_BT_RECV_IS_RX_THREAD)
/* RX thread */
k_thread_create(&rx_thread_data, rx_thread_stack,
K_THREAD_STACK_SIZEOF(rx_thread_stack),
(k_thread_entry_t)hci_rx_thread, NULL, NULL, NULL,
K_PRIO_COOP(CONFIG_BT_RX_PRIO),
0, K_NO_WAIT);
k_thread_name_set(&rx_thread_data, "BT RX");
#endif
if (IS_ENABLED(CONFIG_BT_TINYCRYPT_ECC)) {
bt_hci_ecc_init();
}
err = bt_dev.drv->open();
if (err) {
BT_ERR("HCI driver open failed (%d)", err);
return err;
}
bt_monitor_send(BT_MONITOR_OPEN_INDEX, NULL, 0);
if (!cb) {
return bt_init();
}
k_work_submit(&bt_dev.init);
return 0;
}
struct bt_ad {
const struct bt_data *data;
size_t len;
};
static int set_ad(u16_t hci_op, const struct bt_ad *ad, size_t ad_len)
{
struct bt_hci_cp_le_set_adv_data *set_data;
struct net_buf *buf;
int c, i;
buf = bt_hci_cmd_create(hci_op, sizeof(*set_data));
if (!buf) {
return -ENOBUFS;
}
set_data = net_buf_add(buf, sizeof(*set_data));
(void)memset(set_data, 0, sizeof(*set_data));
for (c = 0; c < ad_len; c++) {
const struct bt_data *data = ad[c].data;
for (i = 0; i < ad[c].len; i++) {
int len = data[i].data_len;
u8_t type = data[i].type;
/* Check if ad fit in the remaining buffer */
if (set_data->len + len + 2 > 31) {
len = 31 - (set_data->len + 2);
if (type != BT_DATA_NAME_COMPLETE || !len) {
net_buf_unref(buf);
BT_ERR("Too big advertising data");
return -EINVAL;
}
type = BT_DATA_NAME_SHORTENED;
}
set_data->data[set_data->len++] = len + 1;
set_data->data[set_data->len++] = type;
memcpy(&set_data->data[set_data->len], data[i].data,
len);
set_data->len += len;
}
}
return bt_hci_cmd_send_sync(hci_op, buf, NULL);
}
int bt_set_name(const char *name)
{
#if defined(CONFIG_BT_DEVICE_NAME_DYNAMIC)
size_t len = strlen(name);
int err;
if (len >= sizeof(bt_dev.name)) {
return -ENOMEM;
}
if (!strcmp(bt_dev.name, name)) {
return 0;
}
strncpy(bt_dev.name, name, sizeof(bt_dev.name));
/* Update advertising name if in use */
if (atomic_test_bit(bt_dev.flags, BT_DEV_ADVERTISING_NAME)) {
struct bt_data data[] = { BT_DATA(BT_DATA_NAME_COMPLETE, name,
strlen(name)) };
struct bt_ad sd = { data, ARRAY_SIZE(data) };
set_ad(BT_HCI_OP_LE_SET_SCAN_RSP_DATA, &sd, 1);
/* Make sure the new name is set */
if (atomic_test_bit(bt_dev.flags, BT_DEV_ADVERTISING)) {
set_advertise_enable(false);
set_advertise_enable(true);
}
}
if (IS_ENABLED(CONFIG_BT_SETTINGS)) {
err = settings_save_one("bt/name", bt_dev.name, len);
if (err) {
BT_WARN("Unable to store name");
}
}
return 0;
#else
return -ENOMEM;
#endif
}
const char *bt_get_name(void)
{
#if defined(CONFIG_BT_DEVICE_NAME_DYNAMIC)
return bt_dev.name;
#else
return CONFIG_BT_DEVICE_NAME;
#endif
}
int bt_set_id_addr(const bt_addr_le_t *addr)
{
bt_addr_le_t non_const_addr;
if (atomic_test_bit(bt_dev.flags, BT_DEV_READY)) {
BT_ERR("Setting identity not allowed after bt_enable()");
return -EBUSY;
}
bt_addr_le_copy(&non_const_addr, addr);
return bt_id_create(&non_const_addr, NULL);
}
void bt_id_get(bt_addr_le_t *addrs, size_t *count)
{
size_t to_copy = MIN(*count, bt_dev.id_count);
memcpy(addrs, bt_dev.id_addr, to_copy * sizeof(bt_addr_le_t));
*count = to_copy;
}
static int id_find(const bt_addr_le_t *addr)
{
u8_t id;
for (id = 0U; id < bt_dev.id_count; id++) {
if (!bt_addr_le_cmp(addr, &bt_dev.id_addr[id])) {
return id;
}
}
return -ENOENT;
}
static void id_create(u8_t id, bt_addr_le_t *addr, u8_t *irk)
{
if (addr && bt_addr_le_cmp(addr, BT_ADDR_LE_ANY)) {
bt_addr_le_copy(&bt_dev.id_addr[id], addr);
} else {
bt_addr_le_t new_addr;
do {
bt_addr_le_create_static(&new_addr);
/* Make sure we didn't generate a duplicate */
} while (id_find(&new_addr) >= 0);
bt_addr_le_copy(&bt_dev.id_addr[id], &new_addr);
if (addr) {
bt_addr_le_copy(addr, &bt_dev.id_addr[id]);
}
}
#if defined(CONFIG_BT_PRIVACY)
{
u8_t zero_irk[16] = { 0 };
if (irk && memcmp(irk, zero_irk, 16)) {
memcpy(&bt_dev.irk[id], irk, 16);
} else {
bt_rand(&bt_dev.irk[id], 16);
if (irk) {
memcpy(irk, &bt_dev.irk[id], 16);
}
}
}
#endif
/* Only store if stack was already initialized. Before initialization
* we don't know the flash content, so it's potentially harmful to
* try to write anything there.
*/
if (IS_ENABLED(CONFIG_BT_SETTINGS) &&
atomic_test_bit(bt_dev.flags, BT_DEV_READY)) {
bt_settings_save_id();
}
}
int bt_id_create(bt_addr_le_t *addr, u8_t *irk)
{
int new_id;
if (addr && bt_addr_le_cmp(addr, BT_ADDR_LE_ANY)) {
if (addr->type != BT_ADDR_LE_RANDOM ||
!BT_ADDR_IS_STATIC(&addr->a)) {
BT_ERR("Only static random identity address supported");
return -EINVAL;
}
if (id_find(addr) >= 0) {
return -EALREADY;
}
}
if (!IS_ENABLED(CONFIG_BT_PRIVACY) && irk) {
return -EINVAL;
}
if (bt_dev.id_count == ARRAY_SIZE(bt_dev.id_addr)) {
return -ENOMEM;
}
new_id = bt_dev.id_count++;
if (new_id == BT_ID_DEFAULT &&
!atomic_test_bit(bt_dev.flags, BT_DEV_READY)) {
atomic_set_bit(bt_dev.flags, BT_DEV_USER_ID_ADDR);
}
id_create(new_id, addr, irk);
return new_id;
}
int bt_id_reset(u8_t id, bt_addr_le_t *addr, u8_t *irk)
{
if (addr && bt_addr_le_cmp(addr, BT_ADDR_LE_ANY)) {
if (addr->type != BT_ADDR_LE_RANDOM ||
!BT_ADDR_IS_STATIC(&addr->a)) {
BT_ERR("Only static random identity address supported");
return -EINVAL;
}
if (id_find(addr) >= 0) {
return -EALREADY;
}
}
if (!IS_ENABLED(CONFIG_BT_PRIVACY) && irk) {
return -EINVAL;
}
if (id == BT_ID_DEFAULT || id >= bt_dev.id_count) {
return -EINVAL;
}
if (id == bt_dev.adv_id && atomic_test_bit(bt_dev.flags,
BT_DEV_ADVERTISING)) {
return -EBUSY;
}
if (bt_addr_le_cmp(&bt_dev.id_addr[id], BT_ADDR_LE_ANY)) {
int err;
err = bt_unpair(id, NULL);
if (err) {
return err;
}
}
id_create(id, addr, irk);
return id;
}
int bt_id_delete(u8_t id)
{
int err;
if (id == BT_ID_DEFAULT || id >= bt_dev.id_count) {
return -EINVAL;
}
if (!bt_addr_le_cmp(&bt_dev.id_addr[id], BT_ADDR_LE_ANY)) {
return -EALREADY;
}
if (id == bt_dev.adv_id && atomic_test_bit(bt_dev.flags,
BT_DEV_ADVERTISING)) {
return -EBUSY;
}
err = bt_unpair(id, NULL);
if (err) {
return err;
}
#if defined(CONFIG_BT_PRIVACY)
(void)memset(bt_dev.irk[id], 0, 16);
#endif
bt_addr_le_copy(&bt_dev.id_addr[id], BT_ADDR_LE_ANY);
if (id == bt_dev.id_count - 1) {
bt_dev.id_count--;
}
if (IS_ENABLED(CONFIG_BT_SETTINGS) &&
atomic_test_bit(bt_dev.flags, BT_DEV_READY)) {
bt_settings_save_id();
}
return 0;
}
#if defined(CONFIG_BT_HCI_VS_EXT)
static uint8_t bt_read_static_addr(bt_addr_le_t *addr)
{
struct bt_hci_rp_vs_read_static_addrs *rp;
struct net_buf *rsp;
int err, i;
u8_t cnt;
if (!(bt_dev.vs_commands[1] & BIT(0))) {
BT_WARN("Read Static Addresses command not available");
return 0;
}
err = bt_hci_cmd_send_sync(BT_HCI_OP_VS_READ_STATIC_ADDRS, NULL, &rsp);
if (err) {
BT_WARN("Failed to read static addresses");
return 0;
}
rp = (void *)rsp->data;
cnt = MIN(rp->num_addrs, CONFIG_BT_ID_MAX);
for (i = 0; i < cnt; i++) {
addr[i].type = BT_ADDR_LE_RANDOM;
bt_addr_copy(&addr[i].a, &rp->a[i].bdaddr);
}
net_buf_unref(rsp);
if (!cnt) {
BT_WARN("No static addresses stored in controller");
}
return cnt;
}
#elif defined(CONFIG_BT_CTLR)
uint8_t bt_read_static_addr(bt_addr_le_t *addr);
#endif /* CONFIG_BT_HCI_VS_EXT */
int bt_setup_id_addr(void)
{
#if defined(CONFIG_BT_HCI_VS_EXT) || defined(CONFIG_BT_CTLR)
/* Only read the addresses if the user has not already configured one or
* more identities (!bt_dev.id_count).
*/
if (!bt_dev.id_count) {
bt_addr_le_t addrs[CONFIG_BT_ID_MAX];
bt_dev.id_count = bt_read_static_addr(addrs);
if (bt_dev.id_count) {
int i;
for (i = 0; i < bt_dev.id_count; i++) {
id_create(i, &addrs[i], NULL);
}
return set_random_address(&bt_dev.id_addr[0].a);
}
}
#endif
return bt_id_create(NULL, NULL);
}
bool bt_addr_le_is_bonded(u8_t id, const bt_addr_le_t *addr)
{
if (IS_ENABLED(CONFIG_BT_SMP)) {
struct bt_keys *keys = bt_keys_find_addr(id, addr);
/* if there are any keys stored then device is bonded */
return keys && keys->keys;
} else {
return false;
}
}
static bool valid_adv_param(const struct bt_le_adv_param *param, bool dir_adv)
{
if (param->id >= bt_dev.id_count ||
!bt_addr_le_cmp(&bt_dev.id_addr[param->id], BT_ADDR_LE_ANY)) {
return false;
}
if (!(param->options & BT_LE_ADV_OPT_CONNECTABLE)) {
/*
* BT Core 4.2 [Vol 2, Part E, 7.8.5]
* The Advertising_Interval_Min and Advertising_Interval_Max
* shall not be set to less than 0x00A0 (100 ms) if the
* Advertising_Type is set to ADV_SCAN_IND or ADV_NONCONN_IND.
*/
if (bt_dev.hci_version < BT_HCI_VERSION_5_0 &&
param->interval_min < 0x00a0) {
return false;
}
}
if ((param->options & BT_LE_ADV_OPT_DIR_MODE_LOW_DUTY) || !dir_adv) {
if (param->interval_min > param->interval_max ||
param->interval_min < 0x0020 ||
param->interval_max > 0x4000) {
return false;
}
}
return true;
}
static inline bool ad_has_name(const struct bt_data *ad, size_t ad_len)
{
int i;
for (i = 0; i < ad_len; i++) {
if (ad[i].type == BT_DATA_NAME_COMPLETE ||
ad[i].type == BT_DATA_NAME_SHORTENED) {
return true;
}
}
return false;
}
static int le_adv_update(const struct bt_data *ad, size_t ad_len,
const struct bt_data *sd, size_t sd_len,
bool connectable, bool use_name)
{
struct bt_ad d[2] = {};
int err;
d[0].data = ad;
d[0].len = ad_len;
err = set_ad(BT_HCI_OP_LE_SET_ADV_DATA, d, 1);
if (err) {
return err;
}
d[0].data = sd;
d[0].len = sd_len;
if (use_name) {
const char *name;
if (sd) {
/* Cannot use name if name is already set */
if (ad_has_name(sd, sd_len)) {
return -EINVAL;
}
}
name = bt_get_name();
d[1].data = (&(struct bt_data)BT_DATA(
BT_DATA_NAME_COMPLETE,
name, strlen(name)));
d[1].len = 1;
}
/*
* We need to set SCAN_RSP when enabling advertising type that
* allows for Scan Requests.
*
* If any data was not provided but we enable connectable
* undirected advertising sd needs to be cleared from values set
* by previous calls.
* Clearing sd is done by calling set_ad() with NULL data and
* zero len.
* So following condition check is unusual but correct.
*/
if (d[0].data || d[1].data || connectable) {
err = set_ad(BT_HCI_OP_LE_SET_SCAN_RSP_DATA, d, 2);
if (err) {
return err;
}
}
return 0;
}
int bt_le_adv_update_data(const struct bt_data *ad, size_t ad_len,
const struct bt_data *sd, size_t sd_len)
{
bool connectable, use_name;
if (!atomic_test_bit(bt_dev.flags, BT_DEV_ADVERTISING)) {
return -EAGAIN;
}
connectable = atomic_test_bit(bt_dev.flags,
BT_DEV_ADVERTISING_CONNECTABLE);
use_name = atomic_test_bit(bt_dev.flags, BT_DEV_ADVERTISING_NAME);
return le_adv_update(ad, ad_len, sd, sd_len, connectable, use_name);
}
int bt_le_adv_start_internal(const struct bt_le_adv_param *param,
const struct bt_data *ad, size_t ad_len,
const struct bt_data *sd, size_t sd_len,
const bt_addr_le_t *peer)
{
struct bt_hci_cp_le_set_adv_param set_param;
const bt_addr_le_t *id_addr;
struct net_buf *buf;
bool dir_adv = (peer != NULL);
int err = 0;
if (!atomic_test_bit(bt_dev.flags, BT_DEV_READY)) {
return -EAGAIN;
}
if (!valid_adv_param(param, dir_adv)) {
return -EINVAL;
}
if (atomic_test_bit(bt_dev.flags, BT_DEV_ADVERTISING)) {
return -EALREADY;
}
if (!dir_adv) {
err = le_adv_update(ad, ad_len, sd, sd_len,
param->options & BT_LE_ADV_OPT_CONNECTABLE,
param->options & BT_LE_ADV_OPT_USE_NAME);
if (err) {
return err;
}
}
(void)memset(&set_param, 0, sizeof(set_param));
set_param.min_interval = sys_cpu_to_le16(param->interval_min);
set_param.max_interval = sys_cpu_to_le16(param->interval_max);
set_param.channel_map = 0x07;
/* Set which local identity address we're advertising with */
bt_dev.adv_id = param->id;
id_addr = &bt_dev.id_addr[param->id];
if (param->options & BT_LE_ADV_OPT_CONNECTABLE) {
if (IS_ENABLED(CONFIG_BT_PRIVACY) &&
!(param->options & BT_LE_ADV_OPT_USE_IDENTITY)) {
err = le_set_private_addr(param->id);
if (err) {
return err;
}
if (BT_FEAT_LE_PRIVACY(bt_dev.le.features)) {
set_param.own_addr_type =
BT_HCI_OWN_ADDR_RPA_OR_RANDOM;
} else {
set_param.own_addr_type = BT_ADDR_LE_RANDOM;
}
} else {
/*
* If Static Random address is used as Identity
* address we need to restore it before advertising
* is enabled. Otherwise NRPA used for active scan
* could be used for advertising.
*/
if (id_addr->type == BT_ADDR_LE_RANDOM) {
set_random_address(&id_addr->a);
}
set_param.own_addr_type = id_addr->type;
}
if (dir_adv) {
if (param->options & BT_LE_ADV_OPT_DIR_MODE_LOW_DUTY) {
set_param.type = BT_LE_ADV_DIRECT_IND_LOW_DUTY;
} else {
set_param.type = BT_LE_ADV_DIRECT_IND;
}
bt_addr_le_copy(&set_param.direct_addr, peer);
if (IS_ENABLED(CONFIG_BT_SMP) &&
!IS_ENABLED(CONFIG_BT_PRIVACY) &&
BT_FEAT_LE_PRIVACY(bt_dev.le.features) &&
(param->options & BT_LE_ADV_OPT_DIR_ADDR_RPA)) {
/* This will not use RPA for our own address
* since we have set zeroed out the local IRK.
*/
set_param.own_addr_type |=
BT_HCI_OWN_ADDR_RPA_MASK;
}
} else {
set_param.type = BT_LE_ADV_IND;
}
} else {
if (param->options & BT_LE_ADV_OPT_USE_IDENTITY) {
if (id_addr->type == BT_ADDR_LE_RANDOM) {
err = set_random_address(&id_addr->a);
}
set_param.own_addr_type = id_addr->type;
} else {
err = le_set_private_addr(param->id);
set_param.own_addr_type = BT_ADDR_LE_RANDOM;
}
if (err) {
return err;
}
if (sd) {
set_param.type = BT_LE_ADV_SCAN_IND;
} else {
set_param.type = BT_LE_ADV_NONCONN_IND;
}
}
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_ADV_PARAM, sizeof(set_param));
if (!buf) {
return -ENOBUFS;
}
net_buf_add_mem(buf, &set_param, sizeof(set_param));
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_SET_ADV_PARAM, buf, NULL);
if (err) {
return err;
}
err = set_advertise_enable(true);
if (err) {
return err;
}
if (!(param->options & BT_LE_ADV_OPT_ONE_TIME)) {
atomic_set_bit(bt_dev.flags, BT_DEV_KEEP_ADVERTISING);
}
if (param->options & BT_LE_ADV_OPT_USE_NAME) {
atomic_set_bit(bt_dev.flags, BT_DEV_ADVERTISING_NAME);
}
if (param->options & BT_LE_ADV_OPT_CONNECTABLE) {
atomic_set_bit(bt_dev.flags, BT_DEV_ADVERTISING_CONNECTABLE);
}
return 0;
}
int bt_le_adv_start(const struct bt_le_adv_param *param,
const struct bt_data *ad, size_t ad_len,
const struct bt_data *sd, size_t sd_len)
{
if (param->options & BT_LE_ADV_OPT_DIR_MODE_LOW_DUTY) {
return -EINVAL;
}
return bt_le_adv_start_internal(param, ad, ad_len, sd, sd_len, NULL);
}
int bt_le_adv_stop(void)
{
int err;
/* Make sure advertising is not re-enabled later even if it's not
* currently enabled (i.e. BT_DEV_ADVERTISING is not set).
*/
atomic_clear_bit(bt_dev.flags, BT_DEV_KEEP_ADVERTISING);
if (!atomic_test_bit(bt_dev.flags, BT_DEV_ADVERTISING)) {
return 0;
}
err = set_advertise_enable(false);
if (err) {
return err;
}
if (!IS_ENABLED(CONFIG_BT_PRIVACY)) {
/* If active scan is ongoing set NRPA */
if (atomic_test_bit(bt_dev.flags, BT_DEV_SCANNING) &&
atomic_test_bit(bt_dev.flags, BT_DEV_ACTIVE_SCAN)) {
le_set_private_addr(bt_dev.adv_id);
}
}
return 0;
}
#if defined(CONFIG_BT_OBSERVER)
static bool valid_le_scan_param(const struct bt_le_scan_param *param)
{
if (param->type != BT_HCI_LE_SCAN_PASSIVE &&
param->type != BT_HCI_LE_SCAN_ACTIVE) {
return false;
}
if (param->filter_dup != BT_HCI_LE_SCAN_FILTER_DUP_DISABLE &&
param->filter_dup != BT_HCI_LE_SCAN_FILTER_DUP_ENABLE) {
return false;
}
if (param->interval < 0x0004 || param->interval > 0x4000) {
return false;
}
if (param->window < 0x0004 || param->window > 0x4000) {
return false;
}
if (param->window > param->interval) {
return false;
}
return true;
}
int bt_le_scan_start(const struct bt_le_scan_param *param, bt_le_scan_cb_t cb)
{
int err;
if (!atomic_test_bit(bt_dev.flags, BT_DEV_READY)) {
return -EAGAIN;
}
/* Check that the parameters have valid values */
if (!valid_le_scan_param(param)) {
return -EINVAL;
}
/* Return if active scan is already enabled */
if (atomic_test_and_set_bit(bt_dev.flags, BT_DEV_EXPLICIT_SCAN)) {
return -EALREADY;
}
if (atomic_test_bit(bt_dev.flags, BT_DEV_SCANNING)) {
err = set_le_scan_enable(BT_HCI_LE_SCAN_DISABLE);
if (err) {
atomic_clear_bit(bt_dev.flags, BT_DEV_EXPLICIT_SCAN);
return err;
}
}
atomic_set_bit_to(bt_dev.flags, BT_DEV_SCAN_FILTER_DUP,
param->filter_dup);
err = start_le_scan(param->type, param->interval, param->window);
if (err) {
atomic_clear_bit(bt_dev.flags, BT_DEV_EXPLICIT_SCAN);
return err;
}
scan_dev_found_cb = cb;
return 0;
}
int bt_le_scan_stop(void)
{
/* Return if active scanning is already disabled */
if (!atomic_test_and_clear_bit(bt_dev.flags, BT_DEV_EXPLICIT_SCAN)) {
return -EALREADY;
}
scan_dev_found_cb = NULL;
return bt_le_scan_update(false);
}
#endif /* CONFIG_BT_OBSERVER */
int bt_le_set_chan_map(u8_t chan_map[5])
{
struct bt_hci_cp_le_set_host_chan_classif *cp;
struct net_buf *buf;
if (!IS_ENABLED(CONFIG_BT_CENTRAL)) {
return -ENOTSUP;
}
if (!BT_CMD_TEST(bt_dev.supported_commands, 27, 3)) {
BT_WARN("Set Host Channel Classification command is "
"not supported");
return -ENOTSUP;
}
buf = bt_hci_cmd_create(BT_HCI_OP_LE_SET_HOST_CHAN_CLASSIF,
sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
memcpy(&cp->ch_map[0], &chan_map[0], 4);
cp->ch_map[4] = chan_map[4] & BIT_MASK(5);
return bt_hci_cmd_send_sync(BT_HCI_OP_LE_SET_HOST_CHAN_CLASSIF,
buf, NULL);
}
struct net_buf *bt_buf_get_rx(enum bt_buf_type type, s32_t timeout)
{
struct net_buf *buf;
__ASSERT(type == BT_BUF_EVT || type == BT_BUF_ACL_IN,
"Invalid buffer type requested");
#if defined(CONFIG_BT_HCI_ACL_FLOW_CONTROL)
if (type == BT_BUF_EVT) {
buf = net_buf_alloc(&hci_rx_pool, timeout);
} else {
buf = net_buf_alloc(&acl_in_pool, timeout);
}
#else
buf = net_buf_alloc(&hci_rx_pool, timeout);
#endif
if (buf) {
net_buf_reserve(buf, CONFIG_BT_HCI_RESERVE);
bt_buf_set_type(buf, type);
}
return buf;
}
struct net_buf *bt_buf_get_cmd_complete(s32_t timeout)
{
struct net_buf *buf;
unsigned int key;
key = irq_lock();
buf = bt_dev.sent_cmd;
bt_dev.sent_cmd = NULL;
irq_unlock(key);
BT_DBG("sent_cmd %p", buf);
if (buf) {
bt_buf_set_type(buf, BT_BUF_EVT);
buf->len = 0U;
net_buf_reserve(buf, CONFIG_BT_HCI_RESERVE);
return buf;
}
return bt_buf_get_rx(BT_BUF_EVT, timeout);
}
#if defined(CONFIG_BT_BREDR)
static int br_start_inquiry(const struct bt_br_discovery_param *param)
{
const u8_t iac[3] = { 0x33, 0x8b, 0x9e };
struct bt_hci_op_inquiry *cp;
struct net_buf *buf;
buf = bt_hci_cmd_create(BT_HCI_OP_INQUIRY, sizeof(*cp));
if (!buf) {
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
cp->length = param->length;
cp->num_rsp = 0xff; /* we limit discovery only by time */
memcpy(cp->lap, iac, 3);
if (param->limited) {
cp->lap[0] = 0x00;
}
return bt_hci_cmd_send_sync(BT_HCI_OP_INQUIRY, buf, NULL);
}
static bool valid_br_discov_param(const struct bt_br_discovery_param *param,
size_t num_results)
{
if (!num_results || num_results > 255) {
return false;
}
if (!param->length || param->length > 0x30) {
return false;
}
return true;
}
int bt_br_discovery_start(const struct bt_br_discovery_param *param,
struct bt_br_discovery_result *results, size_t cnt,
bt_br_discovery_cb_t cb)
{
int err;
BT_DBG("");
if (!valid_br_discov_param(param, cnt)) {
return -EINVAL;
}
if (atomic_test_bit(bt_dev.flags, BT_DEV_INQUIRY)) {
return -EALREADY;
}
err = br_start_inquiry(param);
if (err) {
return err;
}
atomic_set_bit(bt_dev.flags, BT_DEV_INQUIRY);
(void)memset(results, 0, sizeof(*results) * cnt);
discovery_cb = cb;
discovery_results = results;
discovery_results_size = cnt;
discovery_results_count = 0;
return 0;
}
int bt_br_discovery_stop(void)
{
int err;
int i;
BT_DBG("");
if (!atomic_test_bit(bt_dev.flags, BT_DEV_INQUIRY)) {
return -EALREADY;
}
err = bt_hci_cmd_send_sync(BT_HCI_OP_INQUIRY_CANCEL, NULL, NULL);
if (err) {
return err;
}
for (i = 0; i < discovery_results_count; i++) {
struct discovery_priv *priv;
struct bt_hci_cp_remote_name_cancel *cp;
struct net_buf *buf;
priv = (struct discovery_priv *)&discovery_results[i]._priv;
if (!priv->resolving) {
continue;
}
buf = bt_hci_cmd_create(BT_HCI_OP_REMOTE_NAME_CANCEL,
sizeof(*cp));
if (!buf) {
continue;
}
cp = net_buf_add(buf, sizeof(*cp));
bt_addr_copy(&cp->bdaddr, &discovery_results[i].addr);
bt_hci_cmd_send_sync(BT_HCI_OP_REMOTE_NAME_CANCEL, buf, NULL);
}
atomic_clear_bit(bt_dev.flags, BT_DEV_INQUIRY);
discovery_cb = NULL;
discovery_results = NULL;
discovery_results_size = 0;
discovery_results_count = 0;
return 0;
}
static int write_scan_enable(u8_t scan)
{
struct net_buf *buf;
int err;
BT_DBG("type %u", scan);
buf = bt_hci_cmd_create(BT_HCI_OP_WRITE_SCAN_ENABLE, 1);
if (!buf) {
return -ENOBUFS;
}
net_buf_add_u8(buf, scan);
err = bt_hci_cmd_send_sync(BT_HCI_OP_WRITE_SCAN_ENABLE, buf, NULL);
if (err) {
return err;
}
atomic_set_bit_to(bt_dev.flags, BT_DEV_ISCAN,
(scan & BT_BREDR_SCAN_INQUIRY));
atomic_set_bit_to(bt_dev.flags, BT_DEV_PSCAN,
(scan & BT_BREDR_SCAN_PAGE));
return 0;
}
int bt_br_set_connectable(bool enable)
{
if (enable) {
if (atomic_test_bit(bt_dev.flags, BT_DEV_PSCAN)) {
return -EALREADY;
} else {
return write_scan_enable(BT_BREDR_SCAN_PAGE);
}
} else {
if (!atomic_test_bit(bt_dev.flags, BT_DEV_PSCAN)) {
return -EALREADY;
} else {
return write_scan_enable(BT_BREDR_SCAN_DISABLED);
}
}
}
int bt_br_set_discoverable(bool enable)
{
if (enable) {
if (atomic_test_bit(bt_dev.flags, BT_DEV_ISCAN)) {
return -EALREADY;
}
if (!atomic_test_bit(bt_dev.flags, BT_DEV_PSCAN)) {
return -EPERM;
}
return write_scan_enable(BT_BREDR_SCAN_INQUIRY |
BT_BREDR_SCAN_PAGE);
} else {
if (!atomic_test_bit(bt_dev.flags, BT_DEV_ISCAN)) {
return -EALREADY;
}
return write_scan_enable(BT_BREDR_SCAN_PAGE);
}
}
#endif /* CONFIG_BT_BREDR */
u16_t bt_hci_get_cmd_opcode(struct net_buf *buf)
{
return cmd(buf)->opcode;
}
#if defined(CONFIG_BT_ECC)
int bt_pub_key_gen(struct bt_pub_key_cb *new_cb)
{
struct bt_pub_key_cb *cb;
int err;
/*
* We check for both "LE Read Local P-256 Public Key" and
* "LE Generate DH Key" support here since both commands are needed for
* ECC support. If "LE Generate DH Key" is not supported then there
* is no point in reading local public key.
*/
if (!BT_CMD_TEST(bt_dev.supported_commands, 34, 1) ||
!BT_CMD_TEST(bt_dev.supported_commands, 34, 2)) {
BT_WARN("ECC HCI commands not available");
return -ENOTSUP;
}
new_cb->_next = pub_key_cb;
pub_key_cb = new_cb;
if (atomic_test_and_set_bit(bt_dev.flags, BT_DEV_PUB_KEY_BUSY)) {
return 0;
}
atomic_clear_bit(bt_dev.flags, BT_DEV_HAS_PUB_KEY);
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_P256_PUBLIC_KEY, NULL, NULL);
if (err) {
BT_ERR("Sending LE P256 Public Key command failed");
atomic_clear_bit(bt_dev.flags, BT_DEV_PUB_KEY_BUSY);
pub_key_cb = NULL;
return err;
}
for (cb = pub_key_cb; cb; cb = cb->_next) {
if (cb != new_cb) {
cb->func(NULL);
}
}
return 0;
}
const u8_t *bt_pub_key_get(void)
{
if (atomic_test_bit(bt_dev.flags, BT_DEV_HAS_PUB_KEY)) {
return pub_key;
}
return NULL;
}
int bt_dh_key_gen(const u8_t remote_pk[64], bt_dh_key_cb_t cb)
{
struct bt_hci_cp_le_generate_dhkey *cp;
struct net_buf *buf;
int err;
if (dh_key_cb || atomic_test_bit(bt_dev.flags, BT_DEV_PUB_KEY_BUSY)) {
return -EBUSY;
}
if (!atomic_test_bit(bt_dev.flags, BT_DEV_HAS_PUB_KEY)) {
return -EADDRNOTAVAIL;
}
dh_key_cb = cb;
buf = bt_hci_cmd_create(BT_HCI_OP_LE_GENERATE_DHKEY, sizeof(*cp));
if (!buf) {
dh_key_cb = NULL;
return -ENOBUFS;
}
cp = net_buf_add(buf, sizeof(*cp));
memcpy(cp->key, remote_pk, sizeof(cp->key));
err = bt_hci_cmd_send_sync(BT_HCI_OP_LE_GENERATE_DHKEY, buf, NULL);
if (err) {
dh_key_cb = NULL;
return err;
}
return 0;
}
#endif /* CONFIG_BT_ECC */
#if defined(CONFIG_BT_BREDR)
int bt_br_oob_get_local(struct bt_br_oob *oob)
{
bt_addr_copy(&oob->addr, &bt_dev.id_addr[0].a);
return 0;
}
#endif /* CONFIG_BT_BREDR */
int bt_le_oob_get_local(u8_t id, struct bt_le_oob *oob)
{
if (id >= CONFIG_BT_ID_MAX) {
return -EINVAL;
}
if (IS_ENABLED(CONFIG_BT_PRIVACY)) {
int err;
/* Invalidate RPA so a new one is generated */
atomic_clear_bit(bt_dev.flags, BT_DEV_RPA_VALID);
err = le_set_private_addr(id);
if (err) {
return err;
}
bt_addr_le_copy(&oob->addr, &bt_dev.random_addr);
} else {
bt_addr_le_copy(&oob->addr, &bt_dev.id_addr[id]);
}
return 0;
}
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