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mgmt.c
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/*
BlueZ - Bluetooth protocol stack for Linux
Copyright (C) 2010 Nokia Corporation
Copyright (C) 2011-2012 Intel Corporation
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2 as
published by the Free Software Foundation;
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
SOFTWARE IS DISCLAIMED.
*/
/* Bluetooth HCI Management interface */
#include <linux/module.h>
#include <asm/unaligned.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include <net/bluetooth/l2cap.h>
#include <net/bluetooth/mgmt.h>
#include "smp.h"
#define MGMT_VERSION 1
#define MGMT_REVISION 7
static const u16 mgmt_commands[] = {
MGMT_OP_READ_INDEX_LIST,
MGMT_OP_READ_INFO,
MGMT_OP_SET_POWERED,
MGMT_OP_SET_DISCOVERABLE,
MGMT_OP_SET_CONNECTABLE,
MGMT_OP_SET_FAST_CONNECTABLE,
MGMT_OP_SET_BONDABLE,
MGMT_OP_SET_LINK_SECURITY,
MGMT_OP_SET_SSP,
MGMT_OP_SET_HS,
MGMT_OP_SET_LE,
MGMT_OP_SET_DEV_CLASS,
MGMT_OP_SET_LOCAL_NAME,
MGMT_OP_ADD_UUID,
MGMT_OP_REMOVE_UUID,
MGMT_OP_LOAD_LINK_KEYS,
MGMT_OP_LOAD_LONG_TERM_KEYS,
MGMT_OP_DISCONNECT,
MGMT_OP_GET_CONNECTIONS,
MGMT_OP_PIN_CODE_REPLY,
MGMT_OP_PIN_CODE_NEG_REPLY,
MGMT_OP_SET_IO_CAPABILITY,
MGMT_OP_PAIR_DEVICE,
MGMT_OP_CANCEL_PAIR_DEVICE,
MGMT_OP_UNPAIR_DEVICE,
MGMT_OP_USER_CONFIRM_REPLY,
MGMT_OP_USER_CONFIRM_NEG_REPLY,
MGMT_OP_USER_PASSKEY_REPLY,
MGMT_OP_USER_PASSKEY_NEG_REPLY,
MGMT_OP_READ_LOCAL_OOB_DATA,
MGMT_OP_ADD_REMOTE_OOB_DATA,
MGMT_OP_REMOVE_REMOTE_OOB_DATA,
MGMT_OP_START_DISCOVERY,
MGMT_OP_STOP_DISCOVERY,
MGMT_OP_CONFIRM_NAME,
MGMT_OP_BLOCK_DEVICE,
MGMT_OP_UNBLOCK_DEVICE,
MGMT_OP_SET_DEVICE_ID,
MGMT_OP_SET_ADVERTISING,
MGMT_OP_SET_BREDR,
MGMT_OP_SET_STATIC_ADDRESS,
MGMT_OP_SET_SCAN_PARAMS,
MGMT_OP_SET_SECURE_CONN,
MGMT_OP_SET_DEBUG_KEYS,
MGMT_OP_SET_PRIVACY,
MGMT_OP_LOAD_IRKS,
MGMT_OP_GET_CONN_INFO,
MGMT_OP_GET_CLOCK_INFO,
MGMT_OP_ADD_DEVICE,
MGMT_OP_REMOVE_DEVICE,
MGMT_OP_LOAD_CONN_PARAM,
MGMT_OP_READ_UNCONF_INDEX_LIST,
MGMT_OP_READ_CONFIG_INFO,
MGMT_OP_SET_EXTERNAL_CONFIG,
MGMT_OP_SET_PUBLIC_ADDRESS,
};
static const u16 mgmt_events[] = {
MGMT_EV_CONTROLLER_ERROR,
MGMT_EV_INDEX_ADDED,
MGMT_EV_INDEX_REMOVED,
MGMT_EV_NEW_SETTINGS,
MGMT_EV_CLASS_OF_DEV_CHANGED,
MGMT_EV_LOCAL_NAME_CHANGED,
MGMT_EV_NEW_LINK_KEY,
MGMT_EV_NEW_LONG_TERM_KEY,
MGMT_EV_DEVICE_CONNECTED,
MGMT_EV_DEVICE_DISCONNECTED,
MGMT_EV_CONNECT_FAILED,
MGMT_EV_PIN_CODE_REQUEST,
MGMT_EV_USER_CONFIRM_REQUEST,
MGMT_EV_USER_PASSKEY_REQUEST,
MGMT_EV_AUTH_FAILED,
MGMT_EV_DEVICE_FOUND,
MGMT_EV_DISCOVERING,
MGMT_EV_DEVICE_BLOCKED,
MGMT_EV_DEVICE_UNBLOCKED,
MGMT_EV_DEVICE_UNPAIRED,
MGMT_EV_PASSKEY_NOTIFY,
MGMT_EV_NEW_IRK,
MGMT_EV_NEW_CSRK,
MGMT_EV_DEVICE_ADDED,
MGMT_EV_DEVICE_REMOVED,
MGMT_EV_NEW_CONN_PARAM,
MGMT_EV_UNCONF_INDEX_ADDED,
MGMT_EV_UNCONF_INDEX_REMOVED,
MGMT_EV_NEW_CONFIG_OPTIONS,
};
#define CACHE_TIMEOUT msecs_to_jiffies(2 * 1000)
struct pending_cmd {
struct list_head list;
u16 opcode;
int index;
void *param;
struct sock *sk;
void *user_data;
};
/* HCI to MGMT error code conversion table */
static u8 mgmt_status_table[] = {
MGMT_STATUS_SUCCESS,
MGMT_STATUS_UNKNOWN_COMMAND, /* Unknown Command */
MGMT_STATUS_NOT_CONNECTED, /* No Connection */
MGMT_STATUS_FAILED, /* Hardware Failure */
MGMT_STATUS_CONNECT_FAILED, /* Page Timeout */
MGMT_STATUS_AUTH_FAILED, /* Authentication Failed */
MGMT_STATUS_AUTH_FAILED, /* PIN or Key Missing */
MGMT_STATUS_NO_RESOURCES, /* Memory Full */
MGMT_STATUS_TIMEOUT, /* Connection Timeout */
MGMT_STATUS_NO_RESOURCES, /* Max Number of Connections */
MGMT_STATUS_NO_RESOURCES, /* Max Number of SCO Connections */
MGMT_STATUS_ALREADY_CONNECTED, /* ACL Connection Exists */
MGMT_STATUS_BUSY, /* Command Disallowed */
MGMT_STATUS_NO_RESOURCES, /* Rejected Limited Resources */
MGMT_STATUS_REJECTED, /* Rejected Security */
MGMT_STATUS_REJECTED, /* Rejected Personal */
MGMT_STATUS_TIMEOUT, /* Host Timeout */
MGMT_STATUS_NOT_SUPPORTED, /* Unsupported Feature */
MGMT_STATUS_INVALID_PARAMS, /* Invalid Parameters */
MGMT_STATUS_DISCONNECTED, /* OE User Ended Connection */
MGMT_STATUS_NO_RESOURCES, /* OE Low Resources */
MGMT_STATUS_DISCONNECTED, /* OE Power Off */
MGMT_STATUS_DISCONNECTED, /* Connection Terminated */
MGMT_STATUS_BUSY, /* Repeated Attempts */
MGMT_STATUS_REJECTED, /* Pairing Not Allowed */
MGMT_STATUS_FAILED, /* Unknown LMP PDU */
MGMT_STATUS_NOT_SUPPORTED, /* Unsupported Remote Feature */
MGMT_STATUS_REJECTED, /* SCO Offset Rejected */
MGMT_STATUS_REJECTED, /* SCO Interval Rejected */
MGMT_STATUS_REJECTED, /* Air Mode Rejected */
MGMT_STATUS_INVALID_PARAMS, /* Invalid LMP Parameters */
MGMT_STATUS_FAILED, /* Unspecified Error */
MGMT_STATUS_NOT_SUPPORTED, /* Unsupported LMP Parameter Value */
MGMT_STATUS_FAILED, /* Role Change Not Allowed */
MGMT_STATUS_TIMEOUT, /* LMP Response Timeout */
MGMT_STATUS_FAILED, /* LMP Error Transaction Collision */
MGMT_STATUS_FAILED, /* LMP PDU Not Allowed */
MGMT_STATUS_REJECTED, /* Encryption Mode Not Accepted */
MGMT_STATUS_FAILED, /* Unit Link Key Used */
MGMT_STATUS_NOT_SUPPORTED, /* QoS Not Supported */
MGMT_STATUS_TIMEOUT, /* Instant Passed */
MGMT_STATUS_NOT_SUPPORTED, /* Pairing Not Supported */
MGMT_STATUS_FAILED, /* Transaction Collision */
MGMT_STATUS_INVALID_PARAMS, /* Unacceptable Parameter */
MGMT_STATUS_REJECTED, /* QoS Rejected */
MGMT_STATUS_NOT_SUPPORTED, /* Classification Not Supported */
MGMT_STATUS_REJECTED, /* Insufficient Security */
MGMT_STATUS_INVALID_PARAMS, /* Parameter Out Of Range */
MGMT_STATUS_BUSY, /* Role Switch Pending */
MGMT_STATUS_FAILED, /* Slot Violation */
MGMT_STATUS_FAILED, /* Role Switch Failed */
MGMT_STATUS_INVALID_PARAMS, /* EIR Too Large */
MGMT_STATUS_NOT_SUPPORTED, /* Simple Pairing Not Supported */
MGMT_STATUS_BUSY, /* Host Busy Pairing */
MGMT_STATUS_REJECTED, /* Rejected, No Suitable Channel */
MGMT_STATUS_BUSY, /* Controller Busy */
MGMT_STATUS_INVALID_PARAMS, /* Unsuitable Connection Interval */
MGMT_STATUS_TIMEOUT, /* Directed Advertising Timeout */
MGMT_STATUS_AUTH_FAILED, /* Terminated Due to MIC Failure */
MGMT_STATUS_CONNECT_FAILED, /* Connection Establishment Failed */
MGMT_STATUS_CONNECT_FAILED, /* MAC Connection Failed */
};
static u8 mgmt_status(u8 hci_status)
{
if (hci_status < ARRAY_SIZE(mgmt_status_table))
return mgmt_status_table[hci_status];
return MGMT_STATUS_FAILED;
}
static int mgmt_event(u16 event, struct hci_dev *hdev, void *data, u16 data_len,
struct sock *skip_sk)
{
struct sk_buff *skb;
struct mgmt_hdr *hdr;
skb = alloc_skb(sizeof(*hdr) + data_len, GFP_KERNEL);
if (!skb)
return -ENOMEM;
hdr = (void *) skb_put(skb, sizeof(*hdr));
hdr->opcode = cpu_to_le16(event);
if (hdev)
hdr->index = cpu_to_le16(hdev->id);
else
hdr->index = cpu_to_le16(MGMT_INDEX_NONE);
hdr->len = cpu_to_le16(data_len);
if (data)
memcpy(skb_put(skb, data_len), data, data_len);
/* Time stamp */
__net_timestamp(skb);
hci_send_to_control(skb, skip_sk);
kfree_skb(skb);
return 0;
}
static int cmd_status(struct sock *sk, u16 index, u16 cmd, u8 status)
{
struct sk_buff *skb;
struct mgmt_hdr *hdr;
struct mgmt_ev_cmd_status *ev;
int err;
BT_DBG("sock %p, index %u, cmd %u, status %u", sk, index, cmd, status);
skb = alloc_skb(sizeof(*hdr) + sizeof(*ev), GFP_KERNEL);
if (!skb)
return -ENOMEM;
hdr = (void *) skb_put(skb, sizeof(*hdr));
hdr->opcode = cpu_to_le16(MGMT_EV_CMD_STATUS);
hdr->index = cpu_to_le16(index);
hdr->len = cpu_to_le16(sizeof(*ev));
ev = (void *) skb_put(skb, sizeof(*ev));
ev->status = status;
ev->opcode = cpu_to_le16(cmd);
err = sock_queue_rcv_skb(sk, skb);
if (err < 0)
kfree_skb(skb);
return err;
}
static int cmd_complete(struct sock *sk, u16 index, u16 cmd, u8 status,
void *rp, size_t rp_len)
{
struct sk_buff *skb;
struct mgmt_hdr *hdr;
struct mgmt_ev_cmd_complete *ev;
int err;
BT_DBG("sock %p", sk);
skb = alloc_skb(sizeof(*hdr) + sizeof(*ev) + rp_len, GFP_KERNEL);
if (!skb)
return -ENOMEM;
hdr = (void *) skb_put(skb, sizeof(*hdr));
hdr->opcode = cpu_to_le16(MGMT_EV_CMD_COMPLETE);
hdr->index = cpu_to_le16(index);
hdr->len = cpu_to_le16(sizeof(*ev) + rp_len);
ev = (void *) skb_put(skb, sizeof(*ev) + rp_len);
ev->opcode = cpu_to_le16(cmd);
ev->status = status;
if (rp)
memcpy(ev->data, rp, rp_len);
err = sock_queue_rcv_skb(sk, skb);
if (err < 0)
kfree_skb(skb);
return err;
}
static int read_version(struct sock *sk, struct hci_dev *hdev, void *data,
u16 data_len)
{
struct mgmt_rp_read_version rp;
BT_DBG("sock %p", sk);
rp.version = MGMT_VERSION;
rp.revision = cpu_to_le16(MGMT_REVISION);
return cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_VERSION, 0, &rp,
sizeof(rp));
}
static int read_commands(struct sock *sk, struct hci_dev *hdev, void *data,
u16 data_len)
{
struct mgmt_rp_read_commands *rp;
const u16 num_commands = ARRAY_SIZE(mgmt_commands);
const u16 num_events = ARRAY_SIZE(mgmt_events);
__le16 *opcode;
size_t rp_size;
int i, err;
BT_DBG("sock %p", sk);
rp_size = sizeof(*rp) + ((num_commands + num_events) * sizeof(u16));
rp = kmalloc(rp_size, GFP_KERNEL);
if (!rp)
return -ENOMEM;
rp->num_commands = cpu_to_le16(num_commands);
rp->num_events = cpu_to_le16(num_events);
for (i = 0, opcode = rp->opcodes; i < num_commands; i++, opcode++)
put_unaligned_le16(mgmt_commands[i], opcode);
for (i = 0; i < num_events; i++, opcode++)
put_unaligned_le16(mgmt_events[i], opcode);
err = cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_COMMANDS, 0, rp,
rp_size);
kfree(rp);
return err;
}
static int read_index_list(struct sock *sk, struct hci_dev *hdev, void *data,
u16 data_len)
{
struct mgmt_rp_read_index_list *rp;
struct hci_dev *d;
size_t rp_len;
u16 count;
int err;
BT_DBG("sock %p", sk);
read_lock(&hci_dev_list_lock);
count = 0;
list_for_each_entry(d, &hci_dev_list, list) {
if (d->dev_type == HCI_BREDR &&
!test_bit(HCI_UNCONFIGURED, &d->dev_flags))
count++;
}
rp_len = sizeof(*rp) + (2 * count);
rp = kmalloc(rp_len, GFP_ATOMIC);
if (!rp) {
read_unlock(&hci_dev_list_lock);
return -ENOMEM;
}
count = 0;
list_for_each_entry(d, &hci_dev_list, list) {
if (test_bit(HCI_SETUP, &d->dev_flags) ||
test_bit(HCI_CONFIG, &d->dev_flags) ||
test_bit(HCI_USER_CHANNEL, &d->dev_flags))
continue;
/* Devices marked as raw-only are neither configured
* nor unconfigured controllers.
*/
if (test_bit(HCI_QUIRK_RAW_DEVICE, &d->quirks))
continue;
if (d->dev_type == HCI_BREDR &&
!test_bit(HCI_UNCONFIGURED, &d->dev_flags)) {
rp->index[count++] = cpu_to_le16(d->id);
BT_DBG("Added hci%u", d->id);
}
}
rp->num_controllers = cpu_to_le16(count);
rp_len = sizeof(*rp) + (2 * count);
read_unlock(&hci_dev_list_lock);
err = cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_INDEX_LIST, 0, rp,
rp_len);
kfree(rp);
return err;
}
static int read_unconf_index_list(struct sock *sk, struct hci_dev *hdev,
void *data, u16 data_len)
{
struct mgmt_rp_read_unconf_index_list *rp;
struct hci_dev *d;
size_t rp_len;
u16 count;
int err;
BT_DBG("sock %p", sk);
read_lock(&hci_dev_list_lock);
count = 0;
list_for_each_entry(d, &hci_dev_list, list) {
if (d->dev_type == HCI_BREDR &&
test_bit(HCI_UNCONFIGURED, &d->dev_flags))
count++;
}
rp_len = sizeof(*rp) + (2 * count);
rp = kmalloc(rp_len, GFP_ATOMIC);
if (!rp) {
read_unlock(&hci_dev_list_lock);
return -ENOMEM;
}
count = 0;
list_for_each_entry(d, &hci_dev_list, list) {
if (test_bit(HCI_SETUP, &d->dev_flags) ||
test_bit(HCI_CONFIG, &d->dev_flags) ||
test_bit(HCI_USER_CHANNEL, &d->dev_flags))
continue;
/* Devices marked as raw-only are neither configured
* nor unconfigured controllers.
*/
if (test_bit(HCI_QUIRK_RAW_DEVICE, &d->quirks))
continue;
if (d->dev_type == HCI_BREDR &&
test_bit(HCI_UNCONFIGURED, &d->dev_flags)) {
rp->index[count++] = cpu_to_le16(d->id);
BT_DBG("Added hci%u", d->id);
}
}
rp->num_controllers = cpu_to_le16(count);
rp_len = sizeof(*rp) + (2 * count);
read_unlock(&hci_dev_list_lock);
err = cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_UNCONF_INDEX_LIST,
0, rp, rp_len);
kfree(rp);
return err;
}
static bool is_configured(struct hci_dev *hdev)
{
if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) &&
!test_bit(HCI_EXT_CONFIGURED, &hdev->dev_flags))
return false;
if (test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks) &&
!bacmp(&hdev->public_addr, BDADDR_ANY))
return false;
return true;
}
static __le32 get_missing_options(struct hci_dev *hdev)
{
u32 options = 0;
if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) &&
!test_bit(HCI_EXT_CONFIGURED, &hdev->dev_flags))
options |= MGMT_OPTION_EXTERNAL_CONFIG;
if (test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks) &&
!bacmp(&hdev->public_addr, BDADDR_ANY))
options |= MGMT_OPTION_PUBLIC_ADDRESS;
return cpu_to_le32(options);
}
static int new_options(struct hci_dev *hdev, struct sock *skip)
{
__le32 options = get_missing_options(hdev);
return mgmt_event(MGMT_EV_NEW_CONFIG_OPTIONS, hdev, &options,
sizeof(options), skip);
}
static int send_options_rsp(struct sock *sk, u16 opcode, struct hci_dev *hdev)
{
__le32 options = get_missing_options(hdev);
return cmd_complete(sk, hdev->id, opcode, 0, &options,
sizeof(options));
}
static int read_config_info(struct sock *sk, struct hci_dev *hdev,
void *data, u16 data_len)
{
struct mgmt_rp_read_config_info rp;
u32 options = 0;
BT_DBG("sock %p %s", sk, hdev->name);
hci_dev_lock(hdev);
memset(&rp, 0, sizeof(rp));
rp.manufacturer = cpu_to_le16(hdev->manufacturer);
if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks))
options |= MGMT_OPTION_EXTERNAL_CONFIG;
if (hdev->set_bdaddr)
options |= MGMT_OPTION_PUBLIC_ADDRESS;
rp.supported_options = cpu_to_le32(options);
rp.missing_options = get_missing_options(hdev);
hci_dev_unlock(hdev);
return cmd_complete(sk, hdev->id, MGMT_OP_READ_CONFIG_INFO, 0, &rp,
sizeof(rp));
}
static u32 get_supported_settings(struct hci_dev *hdev)
{
u32 settings = 0;
settings |= MGMT_SETTING_POWERED;
settings |= MGMT_SETTING_BONDABLE;
settings |= MGMT_SETTING_DEBUG_KEYS;
settings |= MGMT_SETTING_CONNECTABLE;
settings |= MGMT_SETTING_DISCOVERABLE;
if (lmp_bredr_capable(hdev)) {
if (hdev->hci_ver >= BLUETOOTH_VER_1_2)
settings |= MGMT_SETTING_FAST_CONNECTABLE;
settings |= MGMT_SETTING_BREDR;
settings |= MGMT_SETTING_LINK_SECURITY;
if (lmp_ssp_capable(hdev)) {
settings |= MGMT_SETTING_SSP;
settings |= MGMT_SETTING_HS;
}
if (lmp_sc_capable(hdev) ||
test_bit(HCI_FORCE_SC, &hdev->dbg_flags))
settings |= MGMT_SETTING_SECURE_CONN;
}
if (lmp_le_capable(hdev)) {
settings |= MGMT_SETTING_LE;
settings |= MGMT_SETTING_ADVERTISING;
settings |= MGMT_SETTING_PRIVACY;
}
if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) ||
hdev->set_bdaddr)
settings |= MGMT_SETTING_CONFIGURATION;
return settings;
}
static u32 get_current_settings(struct hci_dev *hdev)
{
u32 settings = 0;
if (hdev_is_powered(hdev))
settings |= MGMT_SETTING_POWERED;
if (test_bit(HCI_CONNECTABLE, &hdev->dev_flags))
settings |= MGMT_SETTING_CONNECTABLE;
if (test_bit(HCI_FAST_CONNECTABLE, &hdev->dev_flags))
settings |= MGMT_SETTING_FAST_CONNECTABLE;
if (test_bit(HCI_DISCOVERABLE, &hdev->dev_flags))
settings |= MGMT_SETTING_DISCOVERABLE;
if (test_bit(HCI_BONDABLE, &hdev->dev_flags))
settings |= MGMT_SETTING_BONDABLE;
if (test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags))
settings |= MGMT_SETTING_BREDR;
if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags))
settings |= MGMT_SETTING_LE;
if (test_bit(HCI_LINK_SECURITY, &hdev->dev_flags))
settings |= MGMT_SETTING_LINK_SECURITY;
if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags))
settings |= MGMT_SETTING_SSP;
if (test_bit(HCI_HS_ENABLED, &hdev->dev_flags))
settings |= MGMT_SETTING_HS;
if (test_bit(HCI_ADVERTISING, &hdev->dev_flags))
settings |= MGMT_SETTING_ADVERTISING;
if (test_bit(HCI_SC_ENABLED, &hdev->dev_flags))
settings |= MGMT_SETTING_SECURE_CONN;
if (test_bit(HCI_KEEP_DEBUG_KEYS, &hdev->dev_flags))
settings |= MGMT_SETTING_DEBUG_KEYS;
if (test_bit(HCI_PRIVACY, &hdev->dev_flags))
settings |= MGMT_SETTING_PRIVACY;
return settings;
}
#define PNP_INFO_SVCLASS_ID 0x1200
static u8 *create_uuid16_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
{
u8 *ptr = data, *uuids_start = NULL;
struct bt_uuid *uuid;
if (len < 4)
return ptr;
list_for_each_entry(uuid, &hdev->uuids, list) {
u16 uuid16;
if (uuid->size != 16)
continue;
uuid16 = get_unaligned_le16(&uuid->uuid[12]);
if (uuid16 < 0x1100)
continue;
if (uuid16 == PNP_INFO_SVCLASS_ID)
continue;
if (!uuids_start) {
uuids_start = ptr;
uuids_start[0] = 1;
uuids_start[1] = EIR_UUID16_ALL;
ptr += 2;
}
/* Stop if not enough space to put next UUID */
if ((ptr - data) + sizeof(u16) > len) {
uuids_start[1] = EIR_UUID16_SOME;
break;
}
*ptr++ = (uuid16 & 0x00ff);
*ptr++ = (uuid16 & 0xff00) >> 8;
uuids_start[0] += sizeof(uuid16);
}
return ptr;
}
static u8 *create_uuid32_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
{
u8 *ptr = data, *uuids_start = NULL;
struct bt_uuid *uuid;
if (len < 6)
return ptr;
list_for_each_entry(uuid, &hdev->uuids, list) {
if (uuid->size != 32)
continue;
if (!uuids_start) {
uuids_start = ptr;
uuids_start[0] = 1;
uuids_start[1] = EIR_UUID32_ALL;
ptr += 2;
}
/* Stop if not enough space to put next UUID */
if ((ptr - data) + sizeof(u32) > len) {
uuids_start[1] = EIR_UUID32_SOME;
break;
}
memcpy(ptr, &uuid->uuid[12], sizeof(u32));
ptr += sizeof(u32);
uuids_start[0] += sizeof(u32);
}
return ptr;
}
static u8 *create_uuid128_list(struct hci_dev *hdev, u8 *data, ptrdiff_t len)
{
u8 *ptr = data, *uuids_start = NULL;
struct bt_uuid *uuid;
if (len < 18)
return ptr;
list_for_each_entry(uuid, &hdev->uuids, list) {
if (uuid->size != 128)
continue;
if (!uuids_start) {
uuids_start = ptr;
uuids_start[0] = 1;
uuids_start[1] = EIR_UUID128_ALL;
ptr += 2;
}
/* Stop if not enough space to put next UUID */
if ((ptr - data) + 16 > len) {
uuids_start[1] = EIR_UUID128_SOME;
break;
}
memcpy(ptr, uuid->uuid, 16);
ptr += 16;
uuids_start[0] += 16;
}
return ptr;
}
static struct pending_cmd *mgmt_pending_find(u16 opcode, struct hci_dev *hdev)
{
struct pending_cmd *cmd;
list_for_each_entry(cmd, &hdev->mgmt_pending, list) {
if (cmd->opcode == opcode)
return cmd;
}
return NULL;
}
static struct pending_cmd *mgmt_pending_find_data(u16 opcode,
struct hci_dev *hdev,
const void *data)
{
struct pending_cmd *cmd;
list_for_each_entry(cmd, &hdev->mgmt_pending, list) {
if (cmd->user_data != data)
continue;
if (cmd->opcode == opcode)
return cmd;
}
return NULL;
}
static u8 create_scan_rsp_data(struct hci_dev *hdev, u8 *ptr)
{
u8 ad_len = 0;
size_t name_len;
name_len = strlen(hdev->dev_name);
if (name_len > 0) {
size_t max_len = HCI_MAX_AD_LENGTH - ad_len - 2;
if (name_len > max_len) {
name_len = max_len;
ptr[1] = EIR_NAME_SHORT;
} else
ptr[1] = EIR_NAME_COMPLETE;
ptr[0] = name_len + 1;
memcpy(ptr + 2, hdev->dev_name, name_len);
ad_len += (name_len + 2);
ptr += (name_len + 2);
}
return ad_len;
}
static void update_scan_rsp_data(struct hci_request *req)
{
struct hci_dev *hdev = req->hdev;
struct hci_cp_le_set_scan_rsp_data cp;
u8 len;
if (!test_bit(HCI_LE_ENABLED, &hdev->dev_flags))
return;
memset(&cp, 0, sizeof(cp));
len = create_scan_rsp_data(hdev, cp.data);
if (hdev->scan_rsp_data_len == len &&
memcmp(cp.data, hdev->scan_rsp_data, len) == 0)
return;
memcpy(hdev->scan_rsp_data, cp.data, sizeof(cp.data));
hdev->scan_rsp_data_len = len;
cp.length = len;
hci_req_add(req, HCI_OP_LE_SET_SCAN_RSP_DATA, sizeof(cp), &cp);
}
static u8 get_adv_discov_flags(struct hci_dev *hdev)
{
struct pending_cmd *cmd;
/* If there's a pending mgmt command the flags will not yet have
* their final values, so check for this first.
*/
cmd = mgmt_pending_find(MGMT_OP_SET_DISCOVERABLE, hdev);
if (cmd) {
struct mgmt_mode *cp = cmd->param;
if (cp->val == 0x01)
return LE_AD_GENERAL;
else if (cp->val == 0x02)
return LE_AD_LIMITED;
} else {
if (test_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags))
return LE_AD_LIMITED;
else if (test_bit(HCI_DISCOVERABLE, &hdev->dev_flags))
return LE_AD_GENERAL;
}
return 0;
}
static u8 create_adv_data(struct hci_dev *hdev, u8 *ptr)
{
u8 ad_len = 0, flags = 0;
flags |= get_adv_discov_flags(hdev);
if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags))
flags |= LE_AD_NO_BREDR;
if (flags) {
BT_DBG("adv flags 0x%02x", flags);
ptr[0] = 2;
ptr[1] = EIR_FLAGS;
ptr[2] = flags;
ad_len += 3;
ptr += 3;
}
if (hdev->adv_tx_power != HCI_TX_POWER_INVALID) {
ptr[0] = 2;
ptr[1] = EIR_TX_POWER;
ptr[2] = (u8) hdev->adv_tx_power;
ad_len += 3;
ptr += 3;
}
return ad_len;
}
static void update_adv_data(struct hci_request *req)
{
struct hci_dev *hdev = req->hdev;
struct hci_cp_le_set_adv_data cp;
u8 len;
if (!test_bit(HCI_LE_ENABLED, &hdev->dev_flags))
return;
memset(&cp, 0, sizeof(cp));
len = create_adv_data(hdev, cp.data);
if (hdev->adv_data_len == len &&
memcmp(cp.data, hdev->adv_data, len) == 0)
return;
memcpy(hdev->adv_data, cp.data, sizeof(cp.data));
hdev->adv_data_len = len;
cp.length = len;
hci_req_add(req, HCI_OP_LE_SET_ADV_DATA, sizeof(cp), &cp);
}
int mgmt_update_adv_data(struct hci_dev *hdev)
{
struct hci_request req;
hci_req_init(&req, hdev);
update_adv_data(&req);
return hci_req_run(&req, NULL);
}
static void create_eir(struct hci_dev *hdev, u8 *data)
{
u8 *ptr = data;
size_t name_len;
name_len = strlen(hdev->dev_name);
if (name_len > 0) {
/* EIR Data type */
if (name_len > 48) {
name_len = 48;
ptr[1] = EIR_NAME_SHORT;
} else
ptr[1] = EIR_NAME_COMPLETE;
/* EIR Data length */
ptr[0] = name_len + 1;
memcpy(ptr + 2, hdev->dev_name, name_len);
ptr += (name_len + 2);
}
if (hdev->inq_tx_power != HCI_TX_POWER_INVALID) {
ptr[0] = 2;
ptr[1] = EIR_TX_POWER;
ptr[2] = (u8) hdev->inq_tx_power;
ptr += 3;
}
if (hdev->devid_source > 0) {
ptr[0] = 9;
ptr[1] = EIR_DEVICE_ID;
put_unaligned_le16(hdev->devid_source, ptr + 2);
put_unaligned_le16(hdev->devid_vendor, ptr + 4);
put_unaligned_le16(hdev->devid_product, ptr + 6);
put_unaligned_le16(hdev->devid_version, ptr + 8);
ptr += 10;
}
ptr = create_uuid16_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
ptr = create_uuid32_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
ptr = create_uuid128_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
}
static void update_eir(struct hci_request *req)
{
struct hci_dev *hdev = req->hdev;
struct hci_cp_write_eir cp;
if (!hdev_is_powered(hdev))
return;
if (!lmp_ext_inq_capable(hdev))
return;
if (!test_bit(HCI_SSP_ENABLED, &hdev->dev_flags))
return;
if (test_bit(HCI_SERVICE_CACHE, &hdev->dev_flags))
return;
memset(&cp, 0, sizeof(cp));
create_eir(hdev, cp.data);
if (memcmp(cp.data, hdev->eir, sizeof(cp.data)) == 0)
return;
memcpy(hdev->eir, cp.data, sizeof(cp.data));
hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp);
}
static u8 get_service_classes(struct hci_dev *hdev)
{
struct bt_uuid *uuid;
u8 val = 0;
list_for_each_entry(uuid, &hdev->uuids, list)
val |= uuid->svc_hint;