diff options
Diffstat (limited to 'kernel/net/bluetooth/mgmt.c')
| -rw-r--r-- | kernel/net/bluetooth/mgmt.c | 8415 |
1 files changed, 8415 insertions, 0 deletions
diff --git a/kernel/net/bluetooth/mgmt.c b/kernel/net/bluetooth/mgmt.c new file mode 100644 index 000000000..7fd87e713 --- /dev/null +++ b/kernel/net/bluetooth/mgmt.c @@ -0,0 +1,8415 @@ +/* + 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/hci_sock.h> +#include <net/bluetooth/l2cap.h> +#include <net/bluetooth/mgmt.h> + +#include "hci_request.h" +#include "smp.h" +#include "mgmt_util.h" + +#define MGMT_VERSION 1 +#define MGMT_REVISION 9 + +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, + MGMT_OP_START_SERVICE_DISCOVERY, + MGMT_OP_READ_LOCAL_OOB_EXT_DATA, + MGMT_OP_READ_EXT_INDEX_LIST, + MGMT_OP_READ_ADV_FEATURES, + MGMT_OP_ADD_ADVERTISING, + MGMT_OP_REMOVE_ADVERTISING, +}; + +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, + MGMT_EV_EXT_INDEX_ADDED, + MGMT_EV_EXT_INDEX_REMOVED, + MGMT_EV_LOCAL_OOB_DATA_UPDATED, + MGMT_EV_ADVERTISING_ADDED, + MGMT_EV_ADVERTISING_REMOVED, +}; + +static const u16 mgmt_untrusted_commands[] = { + MGMT_OP_READ_INDEX_LIST, + MGMT_OP_READ_INFO, + MGMT_OP_READ_UNCONF_INDEX_LIST, + MGMT_OP_READ_CONFIG_INFO, + MGMT_OP_READ_EXT_INDEX_LIST, +}; + +static const u16 mgmt_untrusted_events[] = { + 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_UNCONF_INDEX_ADDED, + MGMT_EV_UNCONF_INDEX_REMOVED, + MGMT_EV_NEW_CONFIG_OPTIONS, + MGMT_EV_EXT_INDEX_ADDED, + MGMT_EV_EXT_INDEX_REMOVED, +}; + +#define CACHE_TIMEOUT msecs_to_jiffies(2 * 1000) + +#define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \ + "\x00\x00\x00\x00\x00\x00\x00\x00" + +/* 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_index_event(u16 event, struct hci_dev *hdev, void *data, + u16 len, int flag) +{ + return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len, + flag, NULL); +} + +static int mgmt_limited_event(u16 event, struct hci_dev *hdev, void *data, + u16 len, int flag, struct sock *skip_sk) +{ + return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len, + flag, skip_sk); +} + +static int mgmt_generic_event(u16 event, struct hci_dev *hdev, void *data, + u16 len, struct sock *skip_sk) +{ + return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len, + HCI_MGMT_GENERIC_EVENTS, skip_sk); +} + +static int mgmt_event(u16 event, struct hci_dev *hdev, void *data, u16 len, + struct sock *skip_sk) +{ + return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len, + HCI_SOCK_TRUSTED, skip_sk); +} + +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 mgmt_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; + u16 num_commands, num_events; + size_t rp_size; + int i, err; + + BT_DBG("sock %p", sk); + + if (hci_sock_test_flag(sk, HCI_SOCK_TRUSTED)) { + num_commands = ARRAY_SIZE(mgmt_commands); + num_events = ARRAY_SIZE(mgmt_events); + } else { + num_commands = ARRAY_SIZE(mgmt_untrusted_commands); + num_events = ARRAY_SIZE(mgmt_untrusted_events); + } + + 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); + + if (hci_sock_test_flag(sk, HCI_SOCK_TRUSTED)) { + __le16 *opcode = rp->opcodes; + + for (i = 0; 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); + } else { + __le16 *opcode = rp->opcodes; + + for (i = 0; i < num_commands; i++, opcode++) + put_unaligned_le16(mgmt_untrusted_commands[i], opcode); + + for (i = 0; i < num_events; i++, opcode++) + put_unaligned_le16(mgmt_untrusted_events[i], opcode); + } + + err = mgmt_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 && + !hci_dev_test_flag(d, HCI_UNCONFIGURED)) + 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 (hci_dev_test_flag(d, HCI_SETUP) || + hci_dev_test_flag(d, HCI_CONFIG) || + hci_dev_test_flag(d, HCI_USER_CHANNEL)) + 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 && + !hci_dev_test_flag(d, HCI_UNCONFIGURED)) { + 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 = mgmt_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 && + hci_dev_test_flag(d, HCI_UNCONFIGURED)) + 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 (hci_dev_test_flag(d, HCI_SETUP) || + hci_dev_test_flag(d, HCI_CONFIG) || + hci_dev_test_flag(d, HCI_USER_CHANNEL)) + 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 && + hci_dev_test_flag(d, HCI_UNCONFIGURED)) { + 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 = mgmt_cmd_complete(sk, MGMT_INDEX_NONE, + MGMT_OP_READ_UNCONF_INDEX_LIST, 0, rp, rp_len); + + kfree(rp); + + return err; +} + +static int read_ext_index_list(struct sock *sk, struct hci_dev *hdev, + void *data, u16 data_len) +{ + struct mgmt_rp_read_ext_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 || d->dev_type == HCI_AMP) + count++; + } + + rp_len = sizeof(*rp) + (sizeof(rp->entry[0]) * 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 (hci_dev_test_flag(d, HCI_SETUP) || + hci_dev_test_flag(d, HCI_CONFIG) || + hci_dev_test_flag(d, HCI_USER_CHANNEL)) + 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) { + if (hci_dev_test_flag(d, HCI_UNCONFIGURED)) + rp->entry[count].type = 0x01; + else + rp->entry[count].type = 0x00; + } else if (d->dev_type == HCI_AMP) { + rp->entry[count].type = 0x02; + } else { + continue; + } + + rp->entry[count].bus = d->bus; + rp->entry[count++].index = cpu_to_le16(d->id); + BT_DBG("Added hci%u", d->id); + } + + rp->num_controllers = cpu_to_le16(count); + rp_len = sizeof(*rp) + (sizeof(rp->entry[0]) * count); + + read_unlock(&hci_dev_list_lock); + + /* If this command is called at least once, then all the + * default index and unconfigured index events are disabled + * and from now on only extended index events are used. + */ + hci_sock_set_flag(sk, HCI_MGMT_EXT_INDEX_EVENTS); + hci_sock_clear_flag(sk, HCI_MGMT_INDEX_EVENTS); + hci_sock_clear_flag(sk, HCI_MGMT_UNCONF_INDEX_EVENTS); + + err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE, + MGMT_OP_READ_EXT_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) && + !hci_dev_test_flag(hdev, HCI_EXT_CONFIGURED)) + 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) && + !hci_dev_test_flag(hdev, HCI_EXT_CONFIGURED)) + 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_generic_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 mgmt_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 mgmt_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)) + settings |= MGMT_SETTING_SECURE_CONN; + } + + if (lmp_le_capable(hdev)) { + settings |= MGMT_SETTING_LE; + settings |= MGMT_SETTING_ADVERTISING; + settings |= MGMT_SETTING_SECURE_CONN; + settings |= MGMT_SETTING_PRIVACY; + settings |= MGMT_SETTING_STATIC_ADDRESS; + } + + 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 (hci_dev_test_flag(hdev, HCI_CONNECTABLE)) + settings |= MGMT_SETTING_CONNECTABLE; + + if (hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE)) + settings |= MGMT_SETTING_FAST_CONNECTABLE; + + if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE)) + settings |= MGMT_SETTING_DISCOVERABLE; + + if (hci_dev_test_flag(hdev, HCI_BONDABLE)) + settings |= MGMT_SETTING_BONDABLE; + + if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) + settings |= MGMT_SETTING_BREDR; + + if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) + settings |= MGMT_SETTING_LE; + + if (hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) + settings |= MGMT_SETTING_LINK_SECURITY; + + if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) + settings |= MGMT_SETTING_SSP; + + if (hci_dev_test_flag(hdev, HCI_HS_ENABLED)) + settings |= MGMT_SETTING_HS; + + if (hci_dev_test_flag(hdev, HCI_ADVERTISING)) + settings |= MGMT_SETTING_ADVERTISING; + + if (hci_dev_test_flag(hdev, HCI_SC_ENABLED)) + settings |= MGMT_SETTING_SECURE_CONN; + + if (hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) + settings |= MGMT_SETTING_DEBUG_KEYS; + + if (hci_dev_test_flag(hdev, HCI_PRIVACY)) + settings |= MGMT_SETTING_PRIVACY; + + /* The current setting for static address has two purposes. The + * first is to indicate if the static address will be used and + * the second is to indicate if it is actually set. + * + * This means if the static address is not configured, this flag + * will never be set. If the address is configured, then if the + * address is actually used decides if the flag is set or not. + * + * For single mode LE only controllers and dual-mode controllers + * with BR/EDR disabled, the existence of the static address will + * be evaluated. + */ + if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) || + !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) || + !bacmp(&hdev->bdaddr, BDADDR_ANY)) { + if (bacmp(&hdev->static_addr, BDADDR_ANY)) + settings |= MGMT_SETTING_STATIC_ADDRESS; + } + + 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 mgmt_pending_cmd *pending_find(u16 opcode, struct hci_dev *hdev) +{ + return mgmt_pending_find(HCI_CHANNEL_CONTROL, opcode, hdev); +} + +static struct mgmt_pending_cmd *pending_find_data(u16 opcode, + struct hci_dev *hdev, + const void *data) +{ + return mgmt_pending_find_data(HCI_CHANNEL_CONTROL, opcode, hdev, data); +} + +static u8 create_default_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 u8 create_instance_scan_rsp_data(struct hci_dev *hdev, u8 *ptr) +{ + /* TODO: Set the appropriate entries based on advertising instance flags + * here once flags other than 0 are supported. + */ + memcpy(ptr, hdev->adv_instance.scan_rsp_data, + hdev->adv_instance.scan_rsp_len); + + return hdev->adv_instance.scan_rsp_len; +} + +static void update_scan_rsp_data_for_instance(struct hci_request *req, + u8 instance) +{ + struct hci_dev *hdev = req->hdev; + struct hci_cp_le_set_scan_rsp_data cp; + u8 len; + + if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) + return; + + memset(&cp, 0, sizeof(cp)); + + if (instance) + len = create_instance_scan_rsp_data(hdev, cp.data); + else + len = create_default_scan_rsp_data(hdev, cp.data); + + if (hdev->scan_rsp_data_len == len && + !memcmp(cp.data, hdev->scan_rsp_data, len)) + 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 void update_scan_rsp_data(struct hci_request *req) +{ + struct hci_dev *hdev = req->hdev; + u8 instance; + + /* The "Set Advertising" setting supersedes the "Add Advertising" + * setting. Here we set the scan response data based on which + * setting was set. When neither apply, default to the global settings, + * represented by instance "0". + */ + if (hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) && + !hci_dev_test_flag(hdev, HCI_ADVERTISING)) + instance = 0x01; + else + instance = 0x00; + + update_scan_rsp_data_for_instance(req, instance); +} + +static u8 get_adv_discov_flags(struct hci_dev *hdev) +{ + struct mgmt_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 = 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 (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) + return LE_AD_LIMITED; + else if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE)) + return LE_AD_GENERAL; + } + + return 0; +} + +static u8 get_current_adv_instance(struct hci_dev *hdev) +{ + /* The "Set Advertising" setting supersedes the "Add Advertising" + * setting. Here we set the advertising data based on which + * setting was set. When neither apply, default to the global settings, + * represented by instance "0". + */ + if (hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE) && + !hci_dev_test_flag(hdev, HCI_ADVERTISING)) + return 0x01; + + return 0x00; +} + +static bool get_connectable(struct hci_dev *hdev) +{ + struct mgmt_pending_cmd *cmd; + + /* If there's a pending mgmt command the flag will not yet have + * it's final value, so check for this first. + */ + cmd = pending_find(MGMT_OP_SET_CONNECTABLE, hdev); + if (cmd) { + struct mgmt_mode *cp = cmd->param; + + return cp->val; + } + + return hci_dev_test_flag(hdev, HCI_CONNECTABLE); +} + +static u32 get_adv_instance_flags(struct hci_dev *hdev, u8 instance) +{ + u32 flags; + + if (instance > 0x01) + return 0; + + if (instance == 0x01) + return hdev->adv_instance.flags; + + /* Instance 0 always manages the "Tx Power" and "Flags" fields */ + flags = MGMT_ADV_FLAG_TX_POWER | MGMT_ADV_FLAG_MANAGED_FLAGS; + + /* For instance 0, the HCI_ADVERTISING_CONNECTABLE setting corresponds + * to the "connectable" instance flag. + */ + if (hci_dev_test_flag(hdev, HCI_ADVERTISING_CONNECTABLE)) + flags |= MGMT_ADV_FLAG_CONNECTABLE; + + return flags; +} + +static u8 get_adv_instance_scan_rsp_len(struct hci_dev *hdev, u8 instance) +{ + /* Ignore instance 0 and other unsupported instances */ + if (instance != 0x01) + return 0; + + /* TODO: Take into account the "appearance" and "local-name" flags here. + * These are currently being ignored as they are not supported. + */ + return hdev->adv_instance.scan_rsp_len; +} + +static u8 create_instance_adv_data(struct hci_dev *hdev, u8 instance, u8 *ptr) +{ + u8 ad_len = 0, flags = 0; + u32 instance_flags = get_adv_instance_flags(hdev, instance); + + /* The Add Advertising command allows userspace to set both the general + * and limited discoverable flags. + */ + if (instance_flags & MGMT_ADV_FLAG_DISCOV) + flags |= LE_AD_GENERAL; + + if (instance_flags & MGMT_ADV_FLAG_LIMITED_DISCOV) + flags |= LE_AD_LIMITED; + + if (flags || (instance_flags & MGMT_ADV_FLAG_MANAGED_FLAGS)) { + /* If a discovery flag wasn't provided, simply use the global + * settings. + */ + if (!flags) + flags |= get_adv_discov_flags(hdev); + + if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) + flags |= LE_AD_NO_BREDR; + + /* If flags would still be empty, then there is no need to + * include the "Flags" AD field". + */ + if (flags) { + ptr[0] = 0x02; + ptr[1] = EIR_FLAGS; + ptr[2] = flags; + + ad_len += 3; + ptr += 3; + } + } + + if (instance) { + memcpy(ptr, hdev->adv_instance.adv_data, + hdev->adv_instance.adv_data_len); + + ad_len += hdev->adv_instance.adv_data_len; + ptr += hdev->adv_instance.adv_data_len; + } + + /* Provide Tx Power only if we can provide a valid value for it */ + if (hdev->adv_tx_power != HCI_TX_POWER_INVALID && + (instance_flags & MGMT_ADV_FLAG_TX_POWER)) { + ptr[0] = 0x02; + 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_for_instance(struct hci_request *req, u8 instance) +{ + struct hci_dev *hdev = req->hdev; + struct hci_cp_le_set_adv_data cp; + u8 len; + + if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) + return; + + memset(&cp, 0, sizeof(cp)); + + len = create_instance_adv_data(hdev, instance, cp.data); + + /* There's nothing to do if the data hasn't changed */ + 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); +} + +static void update_adv_data(struct hci_request *req) +{ + struct hci_dev *hdev = req->hdev; + u8 instance = get_current_adv_instance(hdev); + + update_adv_data_for_instance(req, instance); +} + +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 (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) + return; + + if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE)) + 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; + + return val; +} + +static void update_class(struct hci_request *req) +{ + struct hci_dev *hdev = req->hdev; + u8 cod[3]; + + BT_DBG("%s", hdev->name); + + if (!hdev_is_powered(hdev)) + return; + + if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) + return; + + if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE)) + return; + + cod[0] = hdev->minor_class; + cod[1] = hdev->major_class; + cod[2] = get_service_classes(hdev); + + if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE)) + cod[1] |= 0x20; + + if (memcmp(cod, hdev->dev_class, 3) == 0) + return; + + hci_req_add(req, HCI_OP_WRITE_CLASS_OF_DEV, sizeof(cod), cod); +} + +static void disable_advertising(struct hci_request *req) +{ + u8 enable = 0x00; + + hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable); +} + +static void enable_advertising(struct hci_request *req) +{ + struct hci_dev *hdev = req->hdev; + struct hci_cp_le_set_adv_param cp; + u8 own_addr_type, enable = 0x01; + bool connectable; + u8 instance; + u32 flags; + + if (hci_conn_num(hdev, LE_LINK) > 0) + return; + + if (hci_dev_test_flag(hdev, HCI_LE_ADV)) + disable_advertising(req); + + /* Clear the HCI_LE_ADV bit temporarily so that the + * hci_update_random_address knows that it's safe to go ahead + * and write a new random address. The flag will be set back on + * as soon as the SET_ADV_ENABLE HCI command completes. + */ + hci_dev_clear_flag(hdev, HCI_LE_ADV); + + instance = get_current_adv_instance(hdev); + flags = get_adv_instance_flags(hdev, instance); + + /* If the "connectable" instance flag was not set, then choose between + * ADV_IND and ADV_NONCONN_IND based on the global connectable setting. + */ + connectable = (flags & MGMT_ADV_FLAG_CONNECTABLE) || + get_connectable(hdev); + + /* Set require_privacy to true only when non-connectable + * advertising is used. In that case it is fine to use a + * non-resolvable private address. + */ + if (hci_update_random_address(req, !connectable, &own_addr_type) < 0) + return; + + memset(&cp, 0, sizeof(cp)); + cp.min_interval = cpu_to_le16(hdev->le_adv_min_interval); + cp.max_interval = cpu_to_le16(hdev->le_adv_max_interval); + + if (connectable) + cp.type = LE_ADV_IND; + else if (get_adv_instance_scan_rsp_len(hdev, instance)) + cp.type = LE_ADV_SCAN_IND; + else + cp.type = LE_ADV_NONCONN_IND; + + cp.own_address_type = own_addr_type; + cp.channel_map = hdev->le_adv_channel_map; + + hci_req_add(req, HCI_OP_LE_SET_ADV_PARAM, sizeof(cp), &cp); + + hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable); +} + +static void service_cache_off(struct work_struct *work) +{ + struct hci_dev *hdev = container_of(work, struct hci_dev, + service_cache.work); + struct hci_request req; + + if (!hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE)) + return; + + hci_req_init(&req, hdev); + + hci_dev_lock(hdev); + + update_eir(&req); + update_class(&req); + + hci_dev_unlock(hdev); + + hci_req_run(&req, NULL); +} + +static void rpa_expired(struct work_struct *work) +{ + struct hci_dev *hdev = container_of(work, struct hci_dev, + rpa_expired.work); + struct hci_request req; + + BT_DBG(""); + + hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); + + if (!hci_dev_test_flag(hdev, HCI_ADVERTISING)) + return; + + /* The generation of a new RPA and programming it into the + * controller happens in the enable_advertising() function. + */ + hci_req_init(&req, hdev); + enable_advertising(&req); + hci_req_run(&req, NULL); +} + +static void mgmt_init_hdev(struct sock *sk, struct hci_dev *hdev) +{ + if (hci_dev_test_and_set_flag(hdev, HCI_MGMT)) + return; + + INIT_DELAYED_WORK(&hdev->service_cache, service_cache_off); + INIT_DELAYED_WORK(&hdev->rpa_expired, rpa_expired); + + /* Non-mgmt controlled devices get this bit set + * implicitly so that pairing works for them, however + * for mgmt we require user-space to explicitly enable + * it + */ + hci_dev_clear_flag(hdev, HCI_BONDABLE); +} + +static int read_controller_info(struct sock *sk, struct hci_dev *hdev, + void *data, u16 data_len) +{ + struct mgmt_rp_read_info rp; + + BT_DBG("sock %p %s", sk, hdev->name); + + hci_dev_lock(hdev); + + memset(&rp, 0, sizeof(rp)); + + bacpy(&rp.bdaddr, &hdev->bdaddr); + + rp.version = hdev->hci_ver; + rp.manufacturer = cpu_to_le16(hdev->manufacturer); + + rp.supported_settings = cpu_to_le32(get_supported_settings(hdev)); + rp.current_settings = cpu_to_le32(get_current_settings(hdev)); + + memcpy(rp.dev_class, hdev->dev_class, 3); + + memcpy(rp.name, hdev->dev_name, sizeof(hdev->dev_name)); + memcpy(rp.short_name, hdev->short_name, sizeof(hdev->short_name)); + + hci_dev_unlock(hdev); + + return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_INFO, 0, &rp, + sizeof(rp)); +} + +static int send_settings_rsp(struct sock *sk, u16 opcode, struct hci_dev *hdev) +{ + __le32 settings = cpu_to_le32(get_current_settings(hdev)); + + return mgmt_cmd_complete(sk, hdev->id, opcode, 0, &settings, + sizeof(settings)); +} + +static void clean_up_hci_complete(struct hci_dev *hdev, u8 status, u16 opcode) +{ + BT_DBG("%s status 0x%02x", hdev->name, status); + + if (hci_conn_count(hdev) == 0) { + cancel_delayed_work(&hdev->power_off); + queue_work(hdev->req_workqueue, &hdev->power_off.work); + } +} + +static bool hci_stop_discovery(struct hci_request *req) +{ + struct hci_dev *hdev = req->hdev; + struct hci_cp_remote_name_req_cancel cp; + struct inquiry_entry *e; + + switch (hdev->discovery.state) { + case DISCOVERY_FINDING: + if (test_bit(HCI_INQUIRY, &hdev->flags)) + hci_req_add(req, HCI_OP_INQUIRY_CANCEL, 0, NULL); + + if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) { + cancel_delayed_work(&hdev->le_scan_disable); + hci_req_add_le_scan_disable(req); + } + + return true; + + case DISCOVERY_RESOLVING: + e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, + NAME_PENDING); + if (!e) + break; + + bacpy(&cp.bdaddr, &e->data.bdaddr); + hci_req_add(req, HCI_OP_REMOTE_NAME_REQ_CANCEL, sizeof(cp), + &cp); + + return true; + + default: + /* Passive scanning */ + if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) { + hci_req_add_le_scan_disable(req); + return true; + } + + break; + } + + return false; +} + +static void advertising_added(struct sock *sk, struct hci_dev *hdev, + u8 instance) +{ + struct mgmt_ev_advertising_added ev; + + ev.instance = instance; + + mgmt_event(MGMT_EV_ADVERTISING_ADDED, hdev, &ev, sizeof(ev), sk); +} + +static void advertising_removed(struct sock *sk, struct hci_dev *hdev, + u8 instance) +{ + struct mgmt_ev_advertising_removed ev; + + ev.instance = instance; + + mgmt_event(MGMT_EV_ADVERTISING_REMOVED, hdev, &ev, sizeof(ev), sk); +} + +static void clear_adv_instance(struct hci_dev *hdev) +{ + struct hci_request req; + + if (!hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE)) + return; + + if (hdev->adv_instance.timeout) + cancel_delayed_work(&hdev->adv_instance.timeout_exp); + + memset(&hdev->adv_instance, 0, sizeof(hdev->adv_instance)); + advertising_removed(NULL, hdev, 1); + hci_dev_clear_flag(hdev, HCI_ADVERTISING_INSTANCE); + + if (!hdev_is_powered(hdev) || + hci_dev_test_flag(hdev, HCI_ADVERTISING)) + return; + + hci_req_init(&req, hdev); + disable_advertising(&req); + hci_req_run(&req, NULL); +} + +static int clean_up_hci_state(struct hci_dev *hdev) +{ + struct hci_request req; + struct hci_conn *conn; + bool discov_stopped; + int err; + + hci_req_init(&req, hdev); + + if (test_bit(HCI_ISCAN, &hdev->flags) || + test_bit(HCI_PSCAN, &hdev->flags)) { + u8 scan = 0x00; + hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); + } + + if (hdev->adv_instance.timeout) + clear_adv_instance(hdev); + + if (hci_dev_test_flag(hdev, HCI_LE_ADV)) + disable_advertising(&req); + + discov_stopped = hci_stop_discovery(&req); + + list_for_each_entry(conn, &hdev->conn_hash.list, list) { + struct hci_cp_disconnect dc; + struct hci_cp_reject_conn_req rej; + + switch (conn->state) { + case BT_CONNECTED: + case BT_CONFIG: + dc.handle = cpu_to_le16(conn->handle); + dc.reason = 0x15; /* Terminated due to Power Off */ + hci_req_add(&req, HCI_OP_DISCONNECT, sizeof(dc), &dc); + break; + case BT_CONNECT: + if (conn->type == LE_LINK) + hci_req_add(&req, HCI_OP_LE_CREATE_CONN_CANCEL, + 0, NULL); + else if (conn->type == ACL_LINK) + hci_req_add(&req, HCI_OP_CREATE_CONN_CANCEL, + 6, &conn->dst); + break; + case BT_CONNECT2: + bacpy(&rej.bdaddr, &conn->dst); + rej.reason = 0x15; /* Terminated due to Power Off */ + if (conn->type == ACL_LINK) + hci_req_add(&req, HCI_OP_REJECT_CONN_REQ, + sizeof(rej), &rej); + else if (conn->type == SCO_LINK) + hci_req_add(&req, HCI_OP_REJECT_SYNC_CONN_REQ, + sizeof(rej), &rej); + break; + } + } + + err = hci_req_run(&req, clean_up_hci_complete); + if (!err && discov_stopped) + hci_discovery_set_state(hdev, DISCOVERY_STOPPING); + + return err; +} + +static int set_powered(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_mode *cp = data; + struct mgmt_pending_cmd *cmd; + int err; + + BT_DBG("request for %s", hdev->name); + + if (cp->val != 0x00 && cp->val != 0x01) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_POWERED, + MGMT_STATUS_INVALID_PARAMS); + + hci_dev_lock(hdev); + + if (pending_find(MGMT_OP_SET_POWERED, hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_POWERED, + MGMT_STATUS_BUSY); + goto failed; + } + + if (hci_dev_test_and_clear_flag(hdev, HCI_AUTO_OFF)) { + cancel_delayed_work(&hdev->power_off); + + if (cp->val) { + mgmt_pending_add(sk, MGMT_OP_SET_POWERED, hdev, + data, len); + err = mgmt_powered(hdev, 1); + goto failed; + } + } + + if (!!cp->val == hdev_is_powered(hdev)) { + err = send_settings_rsp(sk, MGMT_OP_SET_POWERED, hdev); + goto failed; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_SET_POWERED, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto failed; + } + + if (cp->val) { + queue_work(hdev->req_workqueue, &hdev->power_on); + err = 0; + } else { + /* Disconnect connections, stop scans, etc */ + err = clean_up_hci_state(hdev); + if (!err) + queue_delayed_work(hdev->req_workqueue, &hdev->power_off, + HCI_POWER_OFF_TIMEOUT); + + /* ENODATA means there were no HCI commands queued */ + if (err == -ENODATA) { + cancel_delayed_work(&hdev->power_off); + queue_work(hdev->req_workqueue, &hdev->power_off.work); + err = 0; + } + } + +failed: + hci_dev_unlock(hdev); + return err; +} + +static int new_settings(struct hci_dev *hdev, struct sock *skip) +{ + __le32 ev = cpu_to_le32(get_current_settings(hdev)); + + return mgmt_generic_event(MGMT_EV_NEW_SETTINGS, hdev, &ev, + sizeof(ev), skip); +} + +int mgmt_new_settings(struct hci_dev *hdev) +{ + return new_settings(hdev, NULL); +} + +struct cmd_lookup { + struct sock *sk; + struct hci_dev *hdev; + u8 mgmt_status; +}; + +static void settings_rsp(struct mgmt_pending_cmd *cmd, void *data) +{ + struct cmd_lookup *match = data; + + send_settings_rsp(cmd->sk, cmd->opcode, match->hdev); + + list_del(&cmd->list); + + if (match->sk == NULL) { + match->sk = cmd->sk; + sock_hold(match->sk); + } + + mgmt_pending_free(cmd); +} + +static void cmd_status_rsp(struct mgmt_pending_cmd *cmd, void *data) +{ + u8 *status = data; + + mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, *status); + mgmt_pending_remove(cmd); +} + +static void cmd_complete_rsp(struct mgmt_pending_cmd *cmd, void *data) +{ + if (cmd->cmd_complete) { + u8 *status = data; + + cmd->cmd_complete(cmd, *status); + mgmt_pending_remove(cmd); + + return; + } + + cmd_status_rsp(cmd, data); +} + +static int generic_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status) +{ + return mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status, + cmd->param, cmd->param_len); +} + +static int addr_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status) +{ + return mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status, + cmd->param, sizeof(struct mgmt_addr_info)); +} + +static u8 mgmt_bredr_support(struct hci_dev *hdev) +{ + if (!lmp_bredr_capable(hdev)) + return MGMT_STATUS_NOT_SUPPORTED; + else if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) + return MGMT_STATUS_REJECTED; + else + return MGMT_STATUS_SUCCESS; +} + +static u8 mgmt_le_support(struct hci_dev *hdev) +{ + if (!lmp_le_capable(hdev)) + return MGMT_STATUS_NOT_SUPPORTED; + else if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) + return MGMT_STATUS_REJECTED; + else + return MGMT_STATUS_SUCCESS; +} + +static void set_discoverable_complete(struct hci_dev *hdev, u8 status, + u16 opcode) +{ + struct mgmt_pending_cmd *cmd; + struct mgmt_mode *cp; + struct hci_request req; + bool changed; + + BT_DBG("status 0x%02x", status); + + hci_dev_lock(hdev); + + cmd = pending_find(MGMT_OP_SET_DISCOVERABLE, hdev); + if (!cmd) + goto unlock; + + if (status) { + u8 mgmt_err = mgmt_status(status); + mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err); + hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); + goto remove_cmd; + } + + cp = cmd->param; + if (cp->val) { + changed = !hci_dev_test_and_set_flag(hdev, HCI_DISCOVERABLE); + + if (hdev->discov_timeout > 0) { + int to = msecs_to_jiffies(hdev->discov_timeout * 1000); + queue_delayed_work(hdev->workqueue, &hdev->discov_off, + to); + } + } else { + changed = hci_dev_test_and_clear_flag(hdev, HCI_DISCOVERABLE); + } + + send_settings_rsp(cmd->sk, MGMT_OP_SET_DISCOVERABLE, hdev); + + if (changed) + new_settings(hdev, cmd->sk); + + /* When the discoverable mode gets changed, make sure + * that class of device has the limited discoverable + * bit correctly set. Also update page scan based on whitelist + * entries. + */ + hci_req_init(&req, hdev); + __hci_update_page_scan(&req); + update_class(&req); + hci_req_run(&req, NULL); + +remove_cmd: + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); +} + +static int set_discoverable(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_cp_set_discoverable *cp = data; + struct mgmt_pending_cmd *cmd; + struct hci_request req; + u16 timeout; + u8 scan; + int err; + + BT_DBG("request for %s", hdev->name); + + if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED) && + !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE, + MGMT_STATUS_REJECTED); + + if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE, + MGMT_STATUS_INVALID_PARAMS); + + timeout = __le16_to_cpu(cp->timeout); + + /* Disabling discoverable requires that no timeout is set, + * and enabling limited discoverable requires a timeout. + */ + if ((cp->val == 0x00 && timeout > 0) || + (cp->val == 0x02 && timeout == 0)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE, + MGMT_STATUS_INVALID_PARAMS); + + hci_dev_lock(hdev); + + if (!hdev_is_powered(hdev) && timeout > 0) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE, + MGMT_STATUS_NOT_POWERED); + goto failed; + } + + if (pending_find(MGMT_OP_SET_DISCOVERABLE, hdev) || + pending_find(MGMT_OP_SET_CONNECTABLE, hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE, + MGMT_STATUS_BUSY); + goto failed; + } + + if (!hci_dev_test_flag(hdev, HCI_CONNECTABLE)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DISCOVERABLE, + MGMT_STATUS_REJECTED); + goto failed; + } + + if (!hdev_is_powered(hdev)) { + bool changed = false; + + /* Setting limited discoverable when powered off is + * not a valid operation since it requires a timeout + * and so no need to check HCI_LIMITED_DISCOVERABLE. + */ + if (!!cp->val != hci_dev_test_flag(hdev, HCI_DISCOVERABLE)) { + hci_dev_change_flag(hdev, HCI_DISCOVERABLE); + changed = true; + } + + err = send_settings_rsp(sk, MGMT_OP_SET_DISCOVERABLE, hdev); + if (err < 0) + goto failed; + + if (changed) + err = new_settings(hdev, sk); + + goto failed; + } + + /* If the current mode is the same, then just update the timeout + * value with the new value. And if only the timeout gets updated, + * then no need for any HCI transactions. + */ + if (!!cp->val == hci_dev_test_flag(hdev, HCI_DISCOVERABLE) && + (cp->val == 0x02) == hci_dev_test_flag(hdev, + HCI_LIMITED_DISCOVERABLE)) { + cancel_delayed_work(&hdev->discov_off); + hdev->discov_timeout = timeout; + + if (cp->val && hdev->discov_timeout > 0) { + int to = msecs_to_jiffies(hdev->discov_timeout * 1000); + queue_delayed_work(hdev->workqueue, &hdev->discov_off, + to); + } + + err = send_settings_rsp(sk, MGMT_OP_SET_DISCOVERABLE, hdev); + goto failed; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_SET_DISCOVERABLE, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto failed; + } + + /* Cancel any potential discoverable timeout that might be + * still active and store new timeout value. The arming of + * the timeout happens in the complete handler. + */ + cancel_delayed_work(&hdev->discov_off); + hdev->discov_timeout = timeout; + + /* Limited discoverable mode */ + if (cp->val == 0x02) + hci_dev_set_flag(hdev, HCI_LIMITED_DISCOVERABLE); + else + hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); + + hci_req_init(&req, hdev); + + /* The procedure for LE-only controllers is much simpler - just + * update the advertising data. + */ + if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) + goto update_ad; + + scan = SCAN_PAGE; + + if (cp->val) { + struct hci_cp_write_current_iac_lap hci_cp; + + if (cp->val == 0x02) { + /* Limited discoverable mode */ + hci_cp.num_iac = min_t(u8, hdev->num_iac, 2); + hci_cp.iac_lap[0] = 0x00; /* LIAC */ + hci_cp.iac_lap[1] = 0x8b; + hci_cp.iac_lap[2] = 0x9e; + hci_cp.iac_lap[3] = 0x33; /* GIAC */ + hci_cp.iac_lap[4] = 0x8b; + hci_cp.iac_lap[5] = 0x9e; + } else { + /* General discoverable mode */ + hci_cp.num_iac = 1; + hci_cp.iac_lap[0] = 0x33; /* GIAC */ + hci_cp.iac_lap[1] = 0x8b; + hci_cp.iac_lap[2] = 0x9e; + } + + hci_req_add(&req, HCI_OP_WRITE_CURRENT_IAC_LAP, + (hci_cp.num_iac * 3) + 1, &hci_cp); + + scan |= SCAN_INQUIRY; + } else { + hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); + } + + hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, sizeof(scan), &scan); + +update_ad: + update_adv_data(&req); + + err = hci_req_run(&req, set_discoverable_complete); + if (err < 0) + mgmt_pending_remove(cmd); + +failed: + hci_dev_unlock(hdev); + return err; +} + +static void write_fast_connectable(struct hci_request *req, bool enable) +{ + struct hci_dev *hdev = req->hdev; + struct hci_cp_write_page_scan_activity acp; + u8 type; + + if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) + return; + + if (hdev->hci_ver < BLUETOOTH_VER_1_2) + return; + + if (enable) { + type = PAGE_SCAN_TYPE_INTERLACED; + + /* 160 msec page scan interval */ + acp.interval = cpu_to_le16(0x0100); + } else { + type = PAGE_SCAN_TYPE_STANDARD; /* default */ + + /* default 1.28 sec page scan */ + acp.interval = cpu_to_le16(0x0800); + } + + acp.window = cpu_to_le16(0x0012); + + if (__cpu_to_le16(hdev->page_scan_interval) != acp.interval || + __cpu_to_le16(hdev->page_scan_window) != acp.window) + hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, + sizeof(acp), &acp); + + if (hdev->page_scan_type != type) + hci_req_add(req, HCI_OP_WRITE_PAGE_SCAN_TYPE, 1, &type); +} + +static void set_connectable_complete(struct hci_dev *hdev, u8 status, + u16 opcode) +{ + struct mgmt_pending_cmd *cmd; + struct mgmt_mode *cp; + bool conn_changed, discov_changed; + + BT_DBG("status 0x%02x", status); + + hci_dev_lock(hdev); + + cmd = pending_find(MGMT_OP_SET_CONNECTABLE, hdev); + if (!cmd) + goto unlock; + + if (status) { + u8 mgmt_err = mgmt_status(status); + mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err); + goto remove_cmd; + } + + cp = cmd->param; + if (cp->val) { + conn_changed = !hci_dev_test_and_set_flag(hdev, + HCI_CONNECTABLE); + discov_changed = false; + } else { + conn_changed = hci_dev_test_and_clear_flag(hdev, + HCI_CONNECTABLE); + discov_changed = hci_dev_test_and_clear_flag(hdev, + HCI_DISCOVERABLE); + } + + send_settings_rsp(cmd->sk, MGMT_OP_SET_CONNECTABLE, hdev); + + if (conn_changed || discov_changed) { + new_settings(hdev, cmd->sk); + hci_update_page_scan(hdev); + if (discov_changed) + mgmt_update_adv_data(hdev); + hci_update_background_scan(hdev); + } + +remove_cmd: + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); +} + +static int set_connectable_update_settings(struct hci_dev *hdev, + struct sock *sk, u8 val) +{ + bool changed = false; + int err; + + if (!!val != hci_dev_test_flag(hdev, HCI_CONNECTABLE)) + changed = true; + + if (val) { + hci_dev_set_flag(hdev, HCI_CONNECTABLE); + } else { + hci_dev_clear_flag(hdev, HCI_CONNECTABLE); + hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); + } + + err = send_settings_rsp(sk, MGMT_OP_SET_CONNECTABLE, hdev); + if (err < 0) + return err; + + if (changed) { + hci_update_page_scan(hdev); + hci_update_background_scan(hdev); + return new_settings(hdev, sk); + } + + return 0; +} + +static int set_connectable(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_mode *cp = data; + struct mgmt_pending_cmd *cmd; + struct hci_request req; + u8 scan; + int err; + + BT_DBG("request for %s", hdev->name); + + if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED) && + !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_CONNECTABLE, + MGMT_STATUS_REJECTED); + + if (cp->val != 0x00 && cp->val != 0x01) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_CONNECTABLE, + MGMT_STATUS_INVALID_PARAMS); + + hci_dev_lock(hdev); + + if (!hdev_is_powered(hdev)) { + err = set_connectable_update_settings(hdev, sk, cp->val); + goto failed; + } + + if (pending_find(MGMT_OP_SET_DISCOVERABLE, hdev) || + pending_find(MGMT_OP_SET_CONNECTABLE, hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_CONNECTABLE, + MGMT_STATUS_BUSY); + goto failed; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_SET_CONNECTABLE, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto failed; + } + + hci_req_init(&req, hdev); + + /* If BR/EDR is not enabled and we disable advertising as a + * by-product of disabling connectable, we need to update the + * advertising flags. + */ + if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { + if (!cp->val) { + hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); + hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); + } + update_adv_data(&req); + } else if (cp->val != test_bit(HCI_PSCAN, &hdev->flags)) { + if (cp->val) { + scan = SCAN_PAGE; + } else { + /* If we don't have any whitelist entries just + * disable all scanning. If there are entries + * and we had both page and inquiry scanning + * enabled then fall back to only page scanning. + * Otherwise no changes are needed. + */ + if (list_empty(&hdev->whitelist)) + scan = SCAN_DISABLED; + else if (test_bit(HCI_ISCAN, &hdev->flags)) + scan = SCAN_PAGE; + else + goto no_scan_update; + + if (test_bit(HCI_ISCAN, &hdev->flags) && + hdev->discov_timeout > 0) + cancel_delayed_work(&hdev->discov_off); + } + + hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); + } + +no_scan_update: + /* Update the advertising parameters if necessary */ + if (hci_dev_test_flag(hdev, HCI_ADVERTISING) || + hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE)) + enable_advertising(&req); + + err = hci_req_run(&req, set_connectable_complete); + if (err < 0) { + mgmt_pending_remove(cmd); + if (err == -ENODATA) + err = set_connectable_update_settings(hdev, sk, + cp->val); + goto failed; + } + +failed: + hci_dev_unlock(hdev); + return err; +} + +static int set_bondable(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_mode *cp = data; + bool changed; + int err; + + BT_DBG("request for %s", hdev->name); + + if (cp->val != 0x00 && cp->val != 0x01) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BONDABLE, + MGMT_STATUS_INVALID_PARAMS); + + hci_dev_lock(hdev); + + if (cp->val) + changed = !hci_dev_test_and_set_flag(hdev, HCI_BONDABLE); + else + changed = hci_dev_test_and_clear_flag(hdev, HCI_BONDABLE); + + err = send_settings_rsp(sk, MGMT_OP_SET_BONDABLE, hdev); + if (err < 0) + goto unlock; + + if (changed) + err = new_settings(hdev, sk); + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static int set_link_security(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_mode *cp = data; + struct mgmt_pending_cmd *cmd; + u8 val, status; + int err; + + BT_DBG("request for %s", hdev->name); + + status = mgmt_bredr_support(hdev); + if (status) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LINK_SECURITY, + status); + + if (cp->val != 0x00 && cp->val != 0x01) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LINK_SECURITY, + MGMT_STATUS_INVALID_PARAMS); + + hci_dev_lock(hdev); + + if (!hdev_is_powered(hdev)) { + bool changed = false; + + if (!!cp->val != hci_dev_test_flag(hdev, HCI_LINK_SECURITY)) { + hci_dev_change_flag(hdev, HCI_LINK_SECURITY); + changed = true; + } + + err = send_settings_rsp(sk, MGMT_OP_SET_LINK_SECURITY, hdev); + if (err < 0) + goto failed; + + if (changed) + err = new_settings(hdev, sk); + + goto failed; + } + + if (pending_find(MGMT_OP_SET_LINK_SECURITY, hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LINK_SECURITY, + MGMT_STATUS_BUSY); + goto failed; + } + + val = !!cp->val; + + if (test_bit(HCI_AUTH, &hdev->flags) == val) { + err = send_settings_rsp(sk, MGMT_OP_SET_LINK_SECURITY, hdev); + goto failed; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_SET_LINK_SECURITY, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto failed; + } + + err = hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, sizeof(val), &val); + if (err < 0) { + mgmt_pending_remove(cmd); + goto failed; + } + +failed: + hci_dev_unlock(hdev); + return err; +} + +static int set_ssp(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) +{ + struct mgmt_mode *cp = data; + struct mgmt_pending_cmd *cmd; + u8 status; + int err; + + BT_DBG("request for %s", hdev->name); + + status = mgmt_bredr_support(hdev); + if (status) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SSP, status); + + if (!lmp_ssp_capable(hdev)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SSP, + MGMT_STATUS_NOT_SUPPORTED); + + if (cp->val != 0x00 && cp->val != 0x01) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SSP, + MGMT_STATUS_INVALID_PARAMS); + + hci_dev_lock(hdev); + + if (!hdev_is_powered(hdev)) { + bool changed; + + if (cp->val) { + changed = !hci_dev_test_and_set_flag(hdev, + HCI_SSP_ENABLED); + } else { + changed = hci_dev_test_and_clear_flag(hdev, + HCI_SSP_ENABLED); + if (!changed) + changed = hci_dev_test_and_clear_flag(hdev, + HCI_HS_ENABLED); + else + hci_dev_clear_flag(hdev, HCI_HS_ENABLED); + } + + err = send_settings_rsp(sk, MGMT_OP_SET_SSP, hdev); + if (err < 0) + goto failed; + + if (changed) + err = new_settings(hdev, sk); + + goto failed; + } + + if (pending_find(MGMT_OP_SET_SSP, hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SSP, + MGMT_STATUS_BUSY); + goto failed; + } + + if (!!cp->val == hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { + err = send_settings_rsp(sk, MGMT_OP_SET_SSP, hdev); + goto failed; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_SET_SSP, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto failed; + } + + if (!cp->val && hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS)) + hci_send_cmd(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE, + sizeof(cp->val), &cp->val); + + err = hci_send_cmd(hdev, HCI_OP_WRITE_SSP_MODE, 1, &cp->val); + if (err < 0) { + mgmt_pending_remove(cmd); + goto failed; + } + +failed: + hci_dev_unlock(hdev); + return err; +} + +static int set_hs(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) +{ + struct mgmt_mode *cp = data; + bool changed; + u8 status; + int err; + + BT_DBG("request for %s", hdev->name); + + status = mgmt_bredr_support(hdev); + if (status) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS, status); + + if (!lmp_ssp_capable(hdev)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS, + MGMT_STATUS_NOT_SUPPORTED); + + if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS, + MGMT_STATUS_REJECTED); + + if (cp->val != 0x00 && cp->val != 0x01) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS, + MGMT_STATUS_INVALID_PARAMS); + + hci_dev_lock(hdev); + + if (pending_find(MGMT_OP_SET_SSP, hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS, + MGMT_STATUS_BUSY); + goto unlock; + } + + if (cp->val) { + changed = !hci_dev_test_and_set_flag(hdev, HCI_HS_ENABLED); + } else { + if (hdev_is_powered(hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_HS, + MGMT_STATUS_REJECTED); + goto unlock; + } + + changed = hci_dev_test_and_clear_flag(hdev, HCI_HS_ENABLED); + } + + err = send_settings_rsp(sk, MGMT_OP_SET_HS, hdev); + if (err < 0) + goto unlock; + + if (changed) + err = new_settings(hdev, sk); + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static void le_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode) +{ + struct cmd_lookup match = { NULL, hdev }; + + hci_dev_lock(hdev); + + if (status) { + u8 mgmt_err = mgmt_status(status); + + mgmt_pending_foreach(MGMT_OP_SET_LE, hdev, cmd_status_rsp, + &mgmt_err); + goto unlock; + } + + mgmt_pending_foreach(MGMT_OP_SET_LE, hdev, settings_rsp, &match); + + new_settings(hdev, match.sk); + + if (match.sk) + sock_put(match.sk); + + /* Make sure the controller has a good default for + * advertising data. Restrict the update to when LE + * has actually been enabled. During power on, the + * update in powered_update_hci will take care of it. + */ + if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { + struct hci_request req; + + hci_req_init(&req, hdev); + update_adv_data(&req); + update_scan_rsp_data(&req); + __hci_update_background_scan(&req); + hci_req_run(&req, NULL); + } + +unlock: + hci_dev_unlock(hdev); +} + +static int set_le(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) +{ + struct mgmt_mode *cp = data; + struct hci_cp_write_le_host_supported hci_cp; + struct mgmt_pending_cmd *cmd; + struct hci_request req; + int err; + u8 val, enabled; + + BT_DBG("request for %s", hdev->name); + + if (!lmp_le_capable(hdev)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LE, + MGMT_STATUS_NOT_SUPPORTED); + + if (cp->val != 0x00 && cp->val != 0x01) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LE, + MGMT_STATUS_INVALID_PARAMS); + + /* Bluetooth single mode LE only controllers or dual-mode + * controllers configured as LE only devices, do not allow + * switching LE off. These have either LE enabled explicitly + * or BR/EDR has been previously switched off. + * + * When trying to enable an already enabled LE, then gracefully + * send a positive response. Trying to disable it however will + * result into rejection. + */ + if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { + if (cp->val == 0x01) + return send_settings_rsp(sk, MGMT_OP_SET_LE, hdev); + + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LE, + MGMT_STATUS_REJECTED); + } + + hci_dev_lock(hdev); + + val = !!cp->val; + enabled = lmp_host_le_capable(hdev); + + if (!hdev_is_powered(hdev) || val == enabled) { + bool changed = false; + + if (val != hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { + hci_dev_change_flag(hdev, HCI_LE_ENABLED); + changed = true; + } + + if (!val && hci_dev_test_flag(hdev, HCI_ADVERTISING)) { + hci_dev_clear_flag(hdev, HCI_ADVERTISING); + changed = true; + } + + err = send_settings_rsp(sk, MGMT_OP_SET_LE, hdev); + if (err < 0) + goto unlock; + + if (changed) + err = new_settings(hdev, sk); + + goto unlock; + } + + if (pending_find(MGMT_OP_SET_LE, hdev) || + pending_find(MGMT_OP_SET_ADVERTISING, hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_LE, + MGMT_STATUS_BUSY); + goto unlock; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_SET_LE, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto unlock; + } + + hci_req_init(&req, hdev); + + memset(&hci_cp, 0, sizeof(hci_cp)); + + if (val) { + hci_cp.le = val; + hci_cp.simul = 0x00; + } else { + if (hci_dev_test_flag(hdev, HCI_LE_ADV)) + disable_advertising(&req); + } + + hci_req_add(&req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(hci_cp), + &hci_cp); + + err = hci_req_run(&req, le_enable_complete); + if (err < 0) + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); + return err; +} + +/* This is a helper function to test for pending mgmt commands that can + * cause CoD or EIR HCI commands. We can only allow one such pending + * mgmt command at a time since otherwise we cannot easily track what + * the current values are, will be, and based on that calculate if a new + * HCI command needs to be sent and if yes with what value. + */ +static bool pending_eir_or_class(struct hci_dev *hdev) +{ + struct mgmt_pending_cmd *cmd; + + list_for_each_entry(cmd, &hdev->mgmt_pending, list) { + switch (cmd->opcode) { + case MGMT_OP_ADD_UUID: + case MGMT_OP_REMOVE_UUID: + case MGMT_OP_SET_DEV_CLASS: + case MGMT_OP_SET_POWERED: + return true; + } + } + + return false; +} + +static const u8 bluetooth_base_uuid[] = { + 0xfb, 0x34, 0x9b, 0x5f, 0x80, 0x00, 0x00, 0x80, + 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +}; + +static u8 get_uuid_size(const u8 *uuid) +{ + u32 val; + + if (memcmp(uuid, bluetooth_base_uuid, 12)) + return 128; + + val = get_unaligned_le32(&uuid[12]); + if (val > 0xffff) + return 32; + + return 16; +} + +static void mgmt_class_complete(struct hci_dev *hdev, u16 mgmt_op, u8 status) +{ + struct mgmt_pending_cmd *cmd; + + hci_dev_lock(hdev); + + cmd = pending_find(mgmt_op, hdev); + if (!cmd) + goto unlock; + + mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, + mgmt_status(status), hdev->dev_class, 3); + + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); +} + +static void add_uuid_complete(struct hci_dev *hdev, u8 status, u16 opcode) +{ + BT_DBG("status 0x%02x", status); + + mgmt_class_complete(hdev, MGMT_OP_ADD_UUID, status); +} + +static int add_uuid(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) +{ + struct mgmt_cp_add_uuid *cp = data; + struct mgmt_pending_cmd *cmd; + struct hci_request req; + struct bt_uuid *uuid; + int err; + + BT_DBG("request for %s", hdev->name); + + hci_dev_lock(hdev); + + if (pending_eir_or_class(hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_UUID, + MGMT_STATUS_BUSY); + goto failed; + } + + uuid = kmalloc(sizeof(*uuid), GFP_KERNEL); + if (!uuid) { + err = -ENOMEM; + goto failed; + } + + memcpy(uuid->uuid, cp->uuid, 16); + uuid->svc_hint = cp->svc_hint; + uuid->size = get_uuid_size(cp->uuid); + + list_add_tail(&uuid->list, &hdev->uuids); + + hci_req_init(&req, hdev); + + update_class(&req); + update_eir(&req); + + err = hci_req_run(&req, add_uuid_complete); + if (err < 0) { + if (err != -ENODATA) + goto failed; + + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_UUID, 0, + hdev->dev_class, 3); + goto failed; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_ADD_UUID, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto failed; + } + + err = 0; + +failed: + hci_dev_unlock(hdev); + return err; +} + +static bool enable_service_cache(struct hci_dev *hdev) +{ + if (!hdev_is_powered(hdev)) + return false; + + if (!hci_dev_test_and_set_flag(hdev, HCI_SERVICE_CACHE)) { + queue_delayed_work(hdev->workqueue, &hdev->service_cache, + CACHE_TIMEOUT); + return true; + } + + return false; +} + +static void remove_uuid_complete(struct hci_dev *hdev, u8 status, u16 opcode) +{ + BT_DBG("status 0x%02x", status); + + mgmt_class_complete(hdev, MGMT_OP_REMOVE_UUID, status); +} + +static int remove_uuid(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_cp_remove_uuid *cp = data; + struct mgmt_pending_cmd *cmd; + struct bt_uuid *match, *tmp; + u8 bt_uuid_any[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; + struct hci_request req; + int err, found; + + BT_DBG("request for %s", hdev->name); + + hci_dev_lock(hdev); + + if (pending_eir_or_class(hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_UUID, + MGMT_STATUS_BUSY); + goto unlock; + } + + if (memcmp(cp->uuid, bt_uuid_any, 16) == 0) { + hci_uuids_clear(hdev); + + if (enable_service_cache(hdev)) { + err = mgmt_cmd_complete(sk, hdev->id, + MGMT_OP_REMOVE_UUID, + 0, hdev->dev_class, 3); + goto unlock; + } + + goto update_class; + } + + found = 0; + + list_for_each_entry_safe(match, tmp, &hdev->uuids, list) { + if (memcmp(match->uuid, cp->uuid, 16) != 0) + continue; + + list_del(&match->list); + kfree(match); + found++; + } + + if (found == 0) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_UUID, + MGMT_STATUS_INVALID_PARAMS); + goto unlock; + } + +update_class: + hci_req_init(&req, hdev); + + update_class(&req); + update_eir(&req); + + err = hci_req_run(&req, remove_uuid_complete); + if (err < 0) { + if (err != -ENODATA) + goto unlock; + + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_UUID, 0, + hdev->dev_class, 3); + goto unlock; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_UUID, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto unlock; + } + + err = 0; + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static void set_class_complete(struct hci_dev *hdev, u8 status, u16 opcode) +{ + BT_DBG("status 0x%02x", status); + + mgmt_class_complete(hdev, MGMT_OP_SET_DEV_CLASS, status); +} + +static int set_dev_class(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_cp_set_dev_class *cp = data; + struct mgmt_pending_cmd *cmd; + struct hci_request req; + int err; + + BT_DBG("request for %s", hdev->name); + + if (!lmp_bredr_capable(hdev)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, + MGMT_STATUS_NOT_SUPPORTED); + + hci_dev_lock(hdev); + + if (pending_eir_or_class(hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, + MGMT_STATUS_BUSY); + goto unlock; + } + + if ((cp->minor & 0x03) != 0 || (cp->major & 0xe0) != 0) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, + MGMT_STATUS_INVALID_PARAMS); + goto unlock; + } + + hdev->major_class = cp->major; + hdev->minor_class = cp->minor; + + if (!hdev_is_powered(hdev)) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, 0, + hdev->dev_class, 3); + goto unlock; + } + + hci_req_init(&req, hdev); + + if (hci_dev_test_and_clear_flag(hdev, HCI_SERVICE_CACHE)) { + hci_dev_unlock(hdev); + cancel_delayed_work_sync(&hdev->service_cache); + hci_dev_lock(hdev); + update_eir(&req); + } + + update_class(&req); + + err = hci_req_run(&req, set_class_complete); + if (err < 0) { + if (err != -ENODATA) + goto unlock; + + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_DEV_CLASS, 0, + hdev->dev_class, 3); + goto unlock; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_SET_DEV_CLASS, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto unlock; + } + + err = 0; + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static int load_link_keys(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_cp_load_link_keys *cp = data; + const u16 max_key_count = ((U16_MAX - sizeof(*cp)) / + sizeof(struct mgmt_link_key_info)); + u16 key_count, expected_len; + bool changed; + int i; + + BT_DBG("request for %s", hdev->name); + + if (!lmp_bredr_capable(hdev)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS, + MGMT_STATUS_NOT_SUPPORTED); + + key_count = __le16_to_cpu(cp->key_count); + if (key_count > max_key_count) { + BT_ERR("load_link_keys: too big key_count value %u", + key_count); + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS, + MGMT_STATUS_INVALID_PARAMS); + } + + expected_len = sizeof(*cp) + key_count * + sizeof(struct mgmt_link_key_info); + if (expected_len != len) { + BT_ERR("load_link_keys: expected %u bytes, got %u bytes", + expected_len, len); + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS, + MGMT_STATUS_INVALID_PARAMS); + } + + if (cp->debug_keys != 0x00 && cp->debug_keys != 0x01) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS, + MGMT_STATUS_INVALID_PARAMS); + + BT_DBG("%s debug_keys %u key_count %u", hdev->name, cp->debug_keys, + key_count); + + for (i = 0; i < key_count; i++) { + struct mgmt_link_key_info *key = &cp->keys[i]; + + if (key->addr.type != BDADDR_BREDR || key->type > 0x08) + return mgmt_cmd_status(sk, hdev->id, + MGMT_OP_LOAD_LINK_KEYS, + MGMT_STATUS_INVALID_PARAMS); + } + + hci_dev_lock(hdev); + + hci_link_keys_clear(hdev); + + if (cp->debug_keys) + changed = !hci_dev_test_and_set_flag(hdev, HCI_KEEP_DEBUG_KEYS); + else + changed = hci_dev_test_and_clear_flag(hdev, + HCI_KEEP_DEBUG_KEYS); + + if (changed) + new_settings(hdev, NULL); + + for (i = 0; i < key_count; i++) { + struct mgmt_link_key_info *key = &cp->keys[i]; + + /* Always ignore debug keys and require a new pairing if + * the user wants to use them. + */ + if (key->type == HCI_LK_DEBUG_COMBINATION) + continue; + + hci_add_link_key(hdev, NULL, &key->addr.bdaddr, key->val, + key->type, key->pin_len, NULL); + } + + mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_LINK_KEYS, 0, NULL, 0); + + hci_dev_unlock(hdev); + + return 0; +} + +static int device_unpaired(struct hci_dev *hdev, bdaddr_t *bdaddr, + u8 addr_type, struct sock *skip_sk) +{ + struct mgmt_ev_device_unpaired ev; + + bacpy(&ev.addr.bdaddr, bdaddr); + ev.addr.type = addr_type; + + return mgmt_event(MGMT_EV_DEVICE_UNPAIRED, hdev, &ev, sizeof(ev), + skip_sk); +} + +static int unpair_device(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_cp_unpair_device *cp = data; + struct mgmt_rp_unpair_device rp; + struct hci_cp_disconnect dc; + struct mgmt_pending_cmd *cmd; + struct hci_conn *conn; + int err; + + memset(&rp, 0, sizeof(rp)); + bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr); + rp.addr.type = cp->addr.type; + + if (!bdaddr_type_is_valid(cp->addr.type)) + return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE, + MGMT_STATUS_INVALID_PARAMS, + &rp, sizeof(rp)); + + if (cp->disconnect != 0x00 && cp->disconnect != 0x01) + return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE, + MGMT_STATUS_INVALID_PARAMS, + &rp, sizeof(rp)); + + hci_dev_lock(hdev); + + if (!hdev_is_powered(hdev)) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE, + MGMT_STATUS_NOT_POWERED, &rp, + sizeof(rp)); + goto unlock; + } + + if (cp->addr.type == BDADDR_BREDR) { + /* If disconnection is requested, then look up the + * connection. If the remote device is connected, it + * will be later used to terminate the link. + * + * Setting it to NULL explicitly will cause no + * termination of the link. + */ + if (cp->disconnect) + conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, + &cp->addr.bdaddr); + else + conn = NULL; + + err = hci_remove_link_key(hdev, &cp->addr.bdaddr); + } else { + u8 addr_type; + + conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, + &cp->addr.bdaddr); + if (conn) { + /* Defer clearing up the connection parameters + * until closing to give a chance of keeping + * them if a repairing happens. + */ + set_bit(HCI_CONN_PARAM_REMOVAL_PEND, &conn->flags); + + /* If disconnection is not requested, then + * clear the connection variable so that the + * link is not terminated. + */ + if (!cp->disconnect) + conn = NULL; + } + + if (cp->addr.type == BDADDR_LE_PUBLIC) + addr_type = ADDR_LE_DEV_PUBLIC; + else + addr_type = ADDR_LE_DEV_RANDOM; + + hci_remove_irk(hdev, &cp->addr.bdaddr, addr_type); + + err = hci_remove_ltk(hdev, &cp->addr.bdaddr, addr_type); + } + + if (err < 0) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE, + MGMT_STATUS_NOT_PAIRED, &rp, + sizeof(rp)); + goto unlock; + } + + /* If the connection variable is set, then termination of the + * link is requested. + */ + if (!conn) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNPAIR_DEVICE, 0, + &rp, sizeof(rp)); + device_unpaired(hdev, &cp->addr.bdaddr, cp->addr.type, sk); + goto unlock; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_UNPAIR_DEVICE, hdev, cp, + sizeof(*cp)); + if (!cmd) { + err = -ENOMEM; + goto unlock; + } + + cmd->cmd_complete = addr_cmd_complete; + + dc.handle = cpu_to_le16(conn->handle); + dc.reason = 0x13; /* Remote User Terminated Connection */ + err = hci_send_cmd(hdev, HCI_OP_DISCONNECT, sizeof(dc), &dc); + if (err < 0) + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static int disconnect(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_cp_disconnect *cp = data; + struct mgmt_rp_disconnect rp; + struct mgmt_pending_cmd *cmd; + struct hci_conn *conn; + int err; + + BT_DBG(""); + + memset(&rp, 0, sizeof(rp)); + bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr); + rp.addr.type = cp->addr.type; + + if (!bdaddr_type_is_valid(cp->addr.type)) + return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT, + MGMT_STATUS_INVALID_PARAMS, + &rp, sizeof(rp)); + + hci_dev_lock(hdev); + + if (!test_bit(HCI_UP, &hdev->flags)) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT, + MGMT_STATUS_NOT_POWERED, &rp, + sizeof(rp)); + goto failed; + } + + if (pending_find(MGMT_OP_DISCONNECT, hdev)) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT, + MGMT_STATUS_BUSY, &rp, sizeof(rp)); + goto failed; + } + + if (cp->addr.type == BDADDR_BREDR) + conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, + &cp->addr.bdaddr); + else + conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->addr.bdaddr); + + if (!conn || conn->state == BT_OPEN || conn->state == BT_CLOSED) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_DISCONNECT, + MGMT_STATUS_NOT_CONNECTED, &rp, + sizeof(rp)); + goto failed; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_DISCONNECT, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto failed; + } + + cmd->cmd_complete = generic_cmd_complete; + + err = hci_disconnect(conn, HCI_ERROR_REMOTE_USER_TERM); + if (err < 0) + mgmt_pending_remove(cmd); + +failed: + hci_dev_unlock(hdev); + return err; +} + +static u8 link_to_bdaddr(u8 link_type, u8 addr_type) +{ + switch (link_type) { + case LE_LINK: + switch (addr_type) { + case ADDR_LE_DEV_PUBLIC: + return BDADDR_LE_PUBLIC; + + default: + /* Fallback to LE Random address type */ + return BDADDR_LE_RANDOM; + } + + default: + /* Fallback to BR/EDR type */ + return BDADDR_BREDR; + } +} + +static int get_connections(struct sock *sk, struct hci_dev *hdev, void *data, + u16 data_len) +{ + struct mgmt_rp_get_connections *rp; + struct hci_conn *c; + size_t rp_len; + int err; + u16 i; + + BT_DBG(""); + + hci_dev_lock(hdev); + + if (!hdev_is_powered(hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_GET_CONNECTIONS, + MGMT_STATUS_NOT_POWERED); + goto unlock; + } + + i = 0; + list_for_each_entry(c, &hdev->conn_hash.list, list) { + if (test_bit(HCI_CONN_MGMT_CONNECTED, &c->flags)) + i++; + } + + rp_len = sizeof(*rp) + (i * sizeof(struct mgmt_addr_info)); + rp = kmalloc(rp_len, GFP_KERNEL); + if (!rp) { + err = -ENOMEM; + goto unlock; + } + + i = 0; + list_for_each_entry(c, &hdev->conn_hash.list, list) { + if (!test_bit(HCI_CONN_MGMT_CONNECTED, &c->flags)) + continue; + bacpy(&rp->addr[i].bdaddr, &c->dst); + rp->addr[i].type = link_to_bdaddr(c->type, c->dst_type); + if (c->type == SCO_LINK || c->type == ESCO_LINK) + continue; + i++; + } + + rp->conn_count = cpu_to_le16(i); + + /* Recalculate length in case of filtered SCO connections, etc */ + rp_len = sizeof(*rp) + (i * sizeof(struct mgmt_addr_info)); + + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONNECTIONS, 0, rp, + rp_len); + + kfree(rp); + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static int send_pin_code_neg_reply(struct sock *sk, struct hci_dev *hdev, + struct mgmt_cp_pin_code_neg_reply *cp) +{ + struct mgmt_pending_cmd *cmd; + int err; + + cmd = mgmt_pending_add(sk, MGMT_OP_PIN_CODE_NEG_REPLY, hdev, cp, + sizeof(*cp)); + if (!cmd) + return -ENOMEM; + + err = hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, + sizeof(cp->addr.bdaddr), &cp->addr.bdaddr); + if (err < 0) + mgmt_pending_remove(cmd); + + return err; +} + +static int pin_code_reply(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct hci_conn *conn; + struct mgmt_cp_pin_code_reply *cp = data; + struct hci_cp_pin_code_reply reply; + struct mgmt_pending_cmd *cmd; + int err; + + BT_DBG(""); + + hci_dev_lock(hdev); + + if (!hdev_is_powered(hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_PIN_CODE_REPLY, + MGMT_STATUS_NOT_POWERED); + goto failed; + } + + conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->addr.bdaddr); + if (!conn) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_PIN_CODE_REPLY, + MGMT_STATUS_NOT_CONNECTED); + goto failed; + } + + if (conn->pending_sec_level == BT_SECURITY_HIGH && cp->pin_len != 16) { + struct mgmt_cp_pin_code_neg_reply ncp; + + memcpy(&ncp.addr, &cp->addr, sizeof(ncp.addr)); + + BT_ERR("PIN code is not 16 bytes long"); + + err = send_pin_code_neg_reply(sk, hdev, &ncp); + if (err >= 0) + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_PIN_CODE_REPLY, + MGMT_STATUS_INVALID_PARAMS); + + goto failed; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_PIN_CODE_REPLY, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto failed; + } + + cmd->cmd_complete = addr_cmd_complete; + + bacpy(&reply.bdaddr, &cp->addr.bdaddr); + reply.pin_len = cp->pin_len; + memcpy(reply.pin_code, cp->pin_code, sizeof(reply.pin_code)); + + err = hci_send_cmd(hdev, HCI_OP_PIN_CODE_REPLY, sizeof(reply), &reply); + if (err < 0) + mgmt_pending_remove(cmd); + +failed: + hci_dev_unlock(hdev); + return err; +} + +static int set_io_capability(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_cp_set_io_capability *cp = data; + + BT_DBG(""); + + if (cp->io_capability > SMP_IO_KEYBOARD_DISPLAY) + return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_IO_CAPABILITY, + MGMT_STATUS_INVALID_PARAMS, NULL, 0); + + hci_dev_lock(hdev); + + hdev->io_capability = cp->io_capability; + + BT_DBG("%s IO capability set to 0x%02x", hdev->name, + hdev->io_capability); + + hci_dev_unlock(hdev); + + return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_IO_CAPABILITY, 0, + NULL, 0); +} + +static struct mgmt_pending_cmd *find_pairing(struct hci_conn *conn) +{ + struct hci_dev *hdev = conn->hdev; + struct mgmt_pending_cmd *cmd; + + list_for_each_entry(cmd, &hdev->mgmt_pending, list) { + if (cmd->opcode != MGMT_OP_PAIR_DEVICE) + continue; + + if (cmd->user_data != conn) + continue; + + return cmd; + } + + return NULL; +} + +static int pairing_complete(struct mgmt_pending_cmd *cmd, u8 status) +{ + struct mgmt_rp_pair_device rp; + struct hci_conn *conn = cmd->user_data; + int err; + + bacpy(&rp.addr.bdaddr, &conn->dst); + rp.addr.type = link_to_bdaddr(conn->type, conn->dst_type); + + err = mgmt_cmd_complete(cmd->sk, cmd->index, MGMT_OP_PAIR_DEVICE, + status, &rp, sizeof(rp)); + + /* So we don't get further callbacks for this connection */ + conn->connect_cfm_cb = NULL; + conn->security_cfm_cb = NULL; + conn->disconn_cfm_cb = NULL; + + hci_conn_drop(conn); + + /* The device is paired so there is no need to remove + * its connection parameters anymore. + */ + clear_bit(HCI_CONN_PARAM_REMOVAL_PEND, &conn->flags); + + hci_conn_put(conn); + + return err; +} + +void mgmt_smp_complete(struct hci_conn *conn, bool complete) +{ + u8 status = complete ? MGMT_STATUS_SUCCESS : MGMT_STATUS_FAILED; + struct mgmt_pending_cmd *cmd; + + cmd = find_pairing(conn); + if (cmd) { + cmd->cmd_complete(cmd, status); + mgmt_pending_remove(cmd); + } +} + +static void pairing_complete_cb(struct hci_conn *conn, u8 status) +{ + struct mgmt_pending_cmd *cmd; + + BT_DBG("status %u", status); + + cmd = find_pairing(conn); + if (!cmd) { + BT_DBG("Unable to find a pending command"); + return; + } + + cmd->cmd_complete(cmd, mgmt_status(status)); + mgmt_pending_remove(cmd); +} + +static void le_pairing_complete_cb(struct hci_conn *conn, u8 status) +{ + struct mgmt_pending_cmd *cmd; + + BT_DBG("status %u", status); + + if (!status) + return; + + cmd = find_pairing(conn); + if (!cmd) { + BT_DBG("Unable to find a pending command"); + return; + } + + cmd->cmd_complete(cmd, mgmt_status(status)); + mgmt_pending_remove(cmd); +} + +static int pair_device(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_cp_pair_device *cp = data; + struct mgmt_rp_pair_device rp; + struct mgmt_pending_cmd *cmd; + u8 sec_level, auth_type; + struct hci_conn *conn; + int err; + + BT_DBG(""); + + memset(&rp, 0, sizeof(rp)); + bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr); + rp.addr.type = cp->addr.type; + + if (!bdaddr_type_is_valid(cp->addr.type)) + return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE, + MGMT_STATUS_INVALID_PARAMS, + &rp, sizeof(rp)); + + if (cp->io_cap > SMP_IO_KEYBOARD_DISPLAY) + return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE, + MGMT_STATUS_INVALID_PARAMS, + &rp, sizeof(rp)); + + hci_dev_lock(hdev); + + if (!hdev_is_powered(hdev)) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE, + MGMT_STATUS_NOT_POWERED, &rp, + sizeof(rp)); + goto unlock; + } + + if (hci_bdaddr_is_paired(hdev, &cp->addr.bdaddr, cp->addr.type)) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE, + MGMT_STATUS_ALREADY_PAIRED, &rp, + sizeof(rp)); + goto unlock; + } + + sec_level = BT_SECURITY_MEDIUM; + auth_type = HCI_AT_DEDICATED_BONDING; + + if (cp->addr.type == BDADDR_BREDR) { + conn = hci_connect_acl(hdev, &cp->addr.bdaddr, sec_level, + auth_type); + } else { + u8 addr_type; + + /* Convert from L2CAP channel address type to HCI address type + */ + if (cp->addr.type == BDADDR_LE_PUBLIC) + addr_type = ADDR_LE_DEV_PUBLIC; + else + addr_type = ADDR_LE_DEV_RANDOM; + + /* When pairing a new device, it is expected to remember + * this device for future connections. Adding the connection + * parameter information ahead of time allows tracking + * of the slave preferred values and will speed up any + * further connection establishment. + * + * If connection parameters already exist, then they + * will be kept and this function does nothing. + */ + hci_conn_params_add(hdev, &cp->addr.bdaddr, addr_type); + + conn = hci_connect_le(hdev, &cp->addr.bdaddr, addr_type, + sec_level, HCI_LE_CONN_TIMEOUT, + HCI_ROLE_MASTER); + } + + if (IS_ERR(conn)) { + int status; + + if (PTR_ERR(conn) == -EBUSY) + status = MGMT_STATUS_BUSY; + else if (PTR_ERR(conn) == -EOPNOTSUPP) + status = MGMT_STATUS_NOT_SUPPORTED; + else if (PTR_ERR(conn) == -ECONNREFUSED) + status = MGMT_STATUS_REJECTED; + else + status = MGMT_STATUS_CONNECT_FAILED; + + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE, + status, &rp, sizeof(rp)); + goto unlock; + } + + if (conn->connect_cfm_cb) { + hci_conn_drop(conn); + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_PAIR_DEVICE, + MGMT_STATUS_BUSY, &rp, sizeof(rp)); + goto unlock; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_PAIR_DEVICE, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + hci_conn_drop(conn); + goto unlock; + } + + cmd->cmd_complete = pairing_complete; + + /* For LE, just connecting isn't a proof that the pairing finished */ + if (cp->addr.type == BDADDR_BREDR) { + conn->connect_cfm_cb = pairing_complete_cb; + conn->security_cfm_cb = pairing_complete_cb; + conn->disconn_cfm_cb = pairing_complete_cb; + } else { + conn->connect_cfm_cb = le_pairing_complete_cb; + conn->security_cfm_cb = le_pairing_complete_cb; + conn->disconn_cfm_cb = le_pairing_complete_cb; + } + + conn->io_capability = cp->io_cap; + cmd->user_data = hci_conn_get(conn); + + if ((conn->state == BT_CONNECTED || conn->state == BT_CONFIG) && + hci_conn_security(conn, sec_level, auth_type, true)) { + cmd->cmd_complete(cmd, 0); + mgmt_pending_remove(cmd); + } + + err = 0; + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static int cancel_pair_device(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_addr_info *addr = data; + struct mgmt_pending_cmd *cmd; + struct hci_conn *conn; + int err; + + BT_DBG(""); + + hci_dev_lock(hdev); + + if (!hdev_is_powered(hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE, + MGMT_STATUS_NOT_POWERED); + goto unlock; + } + + cmd = pending_find(MGMT_OP_PAIR_DEVICE, hdev); + if (!cmd) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE, + MGMT_STATUS_INVALID_PARAMS); + goto unlock; + } + + conn = cmd->user_data; + + if (bacmp(&addr->bdaddr, &conn->dst) != 0) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE, + MGMT_STATUS_INVALID_PARAMS); + goto unlock; + } + + cmd->cmd_complete(cmd, MGMT_STATUS_CANCELLED); + mgmt_pending_remove(cmd); + + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CANCEL_PAIR_DEVICE, 0, + addr, sizeof(*addr)); +unlock: + hci_dev_unlock(hdev); + return err; +} + +static int user_pairing_resp(struct sock *sk, struct hci_dev *hdev, + struct mgmt_addr_info *addr, u16 mgmt_op, + u16 hci_op, __le32 passkey) +{ + struct mgmt_pending_cmd *cmd; + struct hci_conn *conn; + int err; + + hci_dev_lock(hdev); + + if (!hdev_is_powered(hdev)) { + err = mgmt_cmd_complete(sk, hdev->id, mgmt_op, + MGMT_STATUS_NOT_POWERED, addr, + sizeof(*addr)); + goto done; + } + + if (addr->type == BDADDR_BREDR) + conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &addr->bdaddr); + else + conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &addr->bdaddr); + + if (!conn) { + err = mgmt_cmd_complete(sk, hdev->id, mgmt_op, + MGMT_STATUS_NOT_CONNECTED, addr, + sizeof(*addr)); + goto done; + } + + if (addr->type == BDADDR_LE_PUBLIC || addr->type == BDADDR_LE_RANDOM) { + err = smp_user_confirm_reply(conn, mgmt_op, passkey); + if (!err) + err = mgmt_cmd_complete(sk, hdev->id, mgmt_op, + MGMT_STATUS_SUCCESS, addr, + sizeof(*addr)); + else + err = mgmt_cmd_complete(sk, hdev->id, mgmt_op, + MGMT_STATUS_FAILED, addr, + sizeof(*addr)); + + goto done; + } + + cmd = mgmt_pending_add(sk, mgmt_op, hdev, addr, sizeof(*addr)); + if (!cmd) { + err = -ENOMEM; + goto done; + } + + cmd->cmd_complete = addr_cmd_complete; + + /* Continue with pairing via HCI */ + if (hci_op == HCI_OP_USER_PASSKEY_REPLY) { + struct hci_cp_user_passkey_reply cp; + + bacpy(&cp.bdaddr, &addr->bdaddr); + cp.passkey = passkey; + err = hci_send_cmd(hdev, hci_op, sizeof(cp), &cp); + } else + err = hci_send_cmd(hdev, hci_op, sizeof(addr->bdaddr), + &addr->bdaddr); + + if (err < 0) + mgmt_pending_remove(cmd); + +done: + hci_dev_unlock(hdev); + return err; +} + +static int pin_code_neg_reply(struct sock *sk, struct hci_dev *hdev, + void *data, u16 len) +{ + struct mgmt_cp_pin_code_neg_reply *cp = data; + + BT_DBG(""); + + return user_pairing_resp(sk, hdev, &cp->addr, + MGMT_OP_PIN_CODE_NEG_REPLY, + HCI_OP_PIN_CODE_NEG_REPLY, 0); +} + +static int user_confirm_reply(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_cp_user_confirm_reply *cp = data; + + BT_DBG(""); + + if (len != sizeof(*cp)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_USER_CONFIRM_REPLY, + MGMT_STATUS_INVALID_PARAMS); + + return user_pairing_resp(sk, hdev, &cp->addr, + MGMT_OP_USER_CONFIRM_REPLY, + HCI_OP_USER_CONFIRM_REPLY, 0); +} + +static int user_confirm_neg_reply(struct sock *sk, struct hci_dev *hdev, + void *data, u16 len) +{ + struct mgmt_cp_user_confirm_neg_reply *cp = data; + + BT_DBG(""); + + return user_pairing_resp(sk, hdev, &cp->addr, + MGMT_OP_USER_CONFIRM_NEG_REPLY, + HCI_OP_USER_CONFIRM_NEG_REPLY, 0); +} + +static int user_passkey_reply(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_cp_user_passkey_reply *cp = data; + + BT_DBG(""); + + return user_pairing_resp(sk, hdev, &cp->addr, + MGMT_OP_USER_PASSKEY_REPLY, + HCI_OP_USER_PASSKEY_REPLY, cp->passkey); +} + +static int user_passkey_neg_reply(struct sock *sk, struct hci_dev *hdev, + void *data, u16 len) +{ + struct mgmt_cp_user_passkey_neg_reply *cp = data; + + BT_DBG(""); + + return user_pairing_resp(sk, hdev, &cp->addr, + MGMT_OP_USER_PASSKEY_NEG_REPLY, + HCI_OP_USER_PASSKEY_NEG_REPLY, 0); +} + +static void update_name(struct hci_request *req) +{ + struct hci_dev *hdev = req->hdev; + struct hci_cp_write_local_name cp; + + memcpy(cp.name, hdev->dev_name, sizeof(cp.name)); + + hci_req_add(req, HCI_OP_WRITE_LOCAL_NAME, sizeof(cp), &cp); +} + +static void set_name_complete(struct hci_dev *hdev, u8 status, u16 opcode) +{ + struct mgmt_cp_set_local_name *cp; + struct mgmt_pending_cmd *cmd; + + BT_DBG("status 0x%02x", status); + + hci_dev_lock(hdev); + + cmd = pending_find(MGMT_OP_SET_LOCAL_NAME, hdev); + if (!cmd) + goto unlock; + + cp = cmd->param; + + if (status) + mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, + mgmt_status(status)); + else + mgmt_cmd_complete(cmd->sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0, + cp, sizeof(*cp)); + + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); +} + +static int set_local_name(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_cp_set_local_name *cp = data; + struct mgmt_pending_cmd *cmd; + struct hci_request req; + int err; + + BT_DBG(""); + + hci_dev_lock(hdev); + + /* If the old values are the same as the new ones just return a + * direct command complete event. + */ + if (!memcmp(hdev->dev_name, cp->name, sizeof(hdev->dev_name)) && + !memcmp(hdev->short_name, cp->short_name, + sizeof(hdev->short_name))) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0, + data, len); + goto failed; + } + + memcpy(hdev->short_name, cp->short_name, sizeof(hdev->short_name)); + + if (!hdev_is_powered(hdev)) { + memcpy(hdev->dev_name, cp->name, sizeof(hdev->dev_name)); + + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0, + data, len); + if (err < 0) + goto failed; + + err = mgmt_generic_event(MGMT_EV_LOCAL_NAME_CHANGED, hdev, + data, len, sk); + + goto failed; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_SET_LOCAL_NAME, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto failed; + } + + memcpy(hdev->dev_name, cp->name, sizeof(hdev->dev_name)); + + hci_req_init(&req, hdev); + + if (lmp_bredr_capable(hdev)) { + update_name(&req); + update_eir(&req); + } + + /* The name is stored in the scan response data and so + * no need to udpate the advertising data here. + */ + if (lmp_le_capable(hdev)) + update_scan_rsp_data(&req); + + err = hci_req_run(&req, set_name_complete); + if (err < 0) + mgmt_pending_remove(cmd); + +failed: + hci_dev_unlock(hdev); + return err; +} + +static void read_local_oob_data_complete(struct hci_dev *hdev, u8 status, + u16 opcode, struct sk_buff *skb) +{ + struct mgmt_rp_read_local_oob_data mgmt_rp; + size_t rp_size = sizeof(mgmt_rp); + struct mgmt_pending_cmd *cmd; + + BT_DBG("%s status %u", hdev->name, status); + + cmd = pending_find(MGMT_OP_READ_LOCAL_OOB_DATA, hdev); + if (!cmd) + return; + + if (status || !skb) { + mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA, + status ? mgmt_status(status) : MGMT_STATUS_FAILED); + goto remove; + } + + memset(&mgmt_rp, 0, sizeof(mgmt_rp)); + + if (opcode == HCI_OP_READ_LOCAL_OOB_DATA) { + struct hci_rp_read_local_oob_data *rp = (void *) skb->data; + + if (skb->len < sizeof(*rp)) { + mgmt_cmd_status(cmd->sk, hdev->id, + MGMT_OP_READ_LOCAL_OOB_DATA, + MGMT_STATUS_FAILED); + goto remove; + } + + memcpy(mgmt_rp.hash192, rp->hash, sizeof(rp->hash)); + memcpy(mgmt_rp.rand192, rp->rand, sizeof(rp->rand)); + + rp_size -= sizeof(mgmt_rp.hash256) + sizeof(mgmt_rp.rand256); + } else { + struct hci_rp_read_local_oob_ext_data *rp = (void *) skb->data; + + if (skb->len < sizeof(*rp)) { + mgmt_cmd_status(cmd->sk, hdev->id, + MGMT_OP_READ_LOCAL_OOB_DATA, + MGMT_STATUS_FAILED); + goto remove; + } + + memcpy(mgmt_rp.hash192, rp->hash192, sizeof(rp->hash192)); + memcpy(mgmt_rp.rand192, rp->rand192, sizeof(rp->rand192)); + + memcpy(mgmt_rp.hash256, rp->hash256, sizeof(rp->hash256)); + memcpy(mgmt_rp.rand256, rp->rand256, sizeof(rp->rand256)); + } + + mgmt_cmd_complete(cmd->sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA, + MGMT_STATUS_SUCCESS, &mgmt_rp, rp_size); + +remove: + mgmt_pending_remove(cmd); +} + +static int read_local_oob_data(struct sock *sk, struct hci_dev *hdev, + void *data, u16 data_len) +{ + struct mgmt_pending_cmd *cmd; + struct hci_request req; + int err; + + BT_DBG("%s", hdev->name); + + hci_dev_lock(hdev); + + if (!hdev_is_powered(hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA, + MGMT_STATUS_NOT_POWERED); + goto unlock; + } + + if (!lmp_ssp_capable(hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA, + MGMT_STATUS_NOT_SUPPORTED); + goto unlock; + } + + if (pending_find(MGMT_OP_READ_LOCAL_OOB_DATA, hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_DATA, + MGMT_STATUS_BUSY); + goto unlock; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_READ_LOCAL_OOB_DATA, hdev, NULL, 0); + if (!cmd) { + err = -ENOMEM; + goto unlock; + } + + hci_req_init(&req, hdev); + + if (bredr_sc_enabled(hdev)) + hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_EXT_DATA, 0, NULL); + else + hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_DATA, 0, NULL); + + err = hci_req_run_skb(&req, read_local_oob_data_complete); + if (err < 0) + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static int add_remote_oob_data(struct sock *sk, struct hci_dev *hdev, + void *data, u16 len) +{ + struct mgmt_addr_info *addr = data; + int err; + + BT_DBG("%s ", hdev->name); + + if (!bdaddr_type_is_valid(addr->type)) + return mgmt_cmd_complete(sk, hdev->id, + MGMT_OP_ADD_REMOTE_OOB_DATA, + MGMT_STATUS_INVALID_PARAMS, + addr, sizeof(*addr)); + + hci_dev_lock(hdev); + + if (len == MGMT_ADD_REMOTE_OOB_DATA_SIZE) { + struct mgmt_cp_add_remote_oob_data *cp = data; + u8 status; + + if (cp->addr.type != BDADDR_BREDR) { + err = mgmt_cmd_complete(sk, hdev->id, + MGMT_OP_ADD_REMOTE_OOB_DATA, + MGMT_STATUS_INVALID_PARAMS, + &cp->addr, sizeof(cp->addr)); + goto unlock; + } + + err = hci_add_remote_oob_data(hdev, &cp->addr.bdaddr, + cp->addr.type, cp->hash, + cp->rand, NULL, NULL); + if (err < 0) + status = MGMT_STATUS_FAILED; + else + status = MGMT_STATUS_SUCCESS; + + err = mgmt_cmd_complete(sk, hdev->id, + MGMT_OP_ADD_REMOTE_OOB_DATA, status, + &cp->addr, sizeof(cp->addr)); + } else if (len == MGMT_ADD_REMOTE_OOB_EXT_DATA_SIZE) { + struct mgmt_cp_add_remote_oob_ext_data *cp = data; + u8 *rand192, *hash192, *rand256, *hash256; + u8 status; + + if (bdaddr_type_is_le(cp->addr.type)) { + /* Enforce zero-valued 192-bit parameters as + * long as legacy SMP OOB isn't implemented. + */ + if (memcmp(cp->rand192, ZERO_KEY, 16) || + memcmp(cp->hash192, ZERO_KEY, 16)) { + err = mgmt_cmd_complete(sk, hdev->id, + MGMT_OP_ADD_REMOTE_OOB_DATA, + MGMT_STATUS_INVALID_PARAMS, + addr, sizeof(*addr)); + goto unlock; + } + + rand192 = NULL; + hash192 = NULL; + } else { + /* In case one of the P-192 values is set to zero, + * then just disable OOB data for P-192. + */ + if (!memcmp(cp->rand192, ZERO_KEY, 16) || + !memcmp(cp->hash192, ZERO_KEY, 16)) { + rand192 = NULL; + hash192 = NULL; + } else { + rand192 = cp->rand192; + hash192 = cp->hash192; + } + } + + /* In case one of the P-256 values is set to zero, then just + * disable OOB data for P-256. + */ + if (!memcmp(cp->rand256, ZERO_KEY, 16) || + !memcmp(cp->hash256, ZERO_KEY, 16)) { + rand256 = NULL; + hash256 = NULL; + } else { + rand256 = cp->rand256; + hash256 = cp->hash256; + } + + err = hci_add_remote_oob_data(hdev, &cp->addr.bdaddr, + cp->addr.type, hash192, rand192, + hash256, rand256); + if (err < 0) + status = MGMT_STATUS_FAILED; + else + status = MGMT_STATUS_SUCCESS; + + err = mgmt_cmd_complete(sk, hdev->id, + MGMT_OP_ADD_REMOTE_OOB_DATA, + status, &cp->addr, sizeof(cp->addr)); + } else { + BT_ERR("add_remote_oob_data: invalid length of %u bytes", len); + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_REMOTE_OOB_DATA, + MGMT_STATUS_INVALID_PARAMS); + } + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static int remove_remote_oob_data(struct sock *sk, struct hci_dev *hdev, + void *data, u16 len) +{ + struct mgmt_cp_remove_remote_oob_data *cp = data; + u8 status; + int err; + + BT_DBG("%s", hdev->name); + + if (cp->addr.type != BDADDR_BREDR) + return mgmt_cmd_complete(sk, hdev->id, + MGMT_OP_REMOVE_REMOTE_OOB_DATA, + MGMT_STATUS_INVALID_PARAMS, + &cp->addr, sizeof(cp->addr)); + + hci_dev_lock(hdev); + + if (!bacmp(&cp->addr.bdaddr, BDADDR_ANY)) { + hci_remote_oob_data_clear(hdev); + status = MGMT_STATUS_SUCCESS; + goto done; + } + + err = hci_remove_remote_oob_data(hdev, &cp->addr.bdaddr, cp->addr.type); + if (err < 0) + status = MGMT_STATUS_INVALID_PARAMS; + else + status = MGMT_STATUS_SUCCESS; + +done: + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_REMOVE_REMOTE_OOB_DATA, + status, &cp->addr, sizeof(cp->addr)); + + hci_dev_unlock(hdev); + return err; +} + +static bool trigger_bredr_inquiry(struct hci_request *req, u8 *status) +{ + struct hci_dev *hdev = req->hdev; + struct hci_cp_inquiry cp; + /* General inquiry access code (GIAC) */ + u8 lap[3] = { 0x33, 0x8b, 0x9e }; + + *status = mgmt_bredr_support(hdev); + if (*status) + return false; + + if (hci_dev_test_flag(hdev, HCI_INQUIRY)) { + *status = MGMT_STATUS_BUSY; + return false; + } + + hci_inquiry_cache_flush(hdev); + + memset(&cp, 0, sizeof(cp)); + memcpy(&cp.lap, lap, sizeof(cp.lap)); + cp.length = DISCOV_BREDR_INQUIRY_LEN; + + hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); + + return true; +} + +static bool trigger_le_scan(struct hci_request *req, u16 interval, u8 *status) +{ + struct hci_dev *hdev = req->hdev; + struct hci_cp_le_set_scan_param param_cp; + struct hci_cp_le_set_scan_enable enable_cp; + u8 own_addr_type; + int err; + + *status = mgmt_le_support(hdev); + if (*status) + return false; + + if (hci_dev_test_flag(hdev, HCI_LE_ADV)) { + /* Don't let discovery abort an outgoing connection attempt + * that's using directed advertising. + */ + if (hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT)) { + *status = MGMT_STATUS_REJECTED; + return false; + } + + disable_advertising(req); + } + + /* If controller is scanning, it means the background scanning is + * running. Thus, we should temporarily stop it in order to set the + * discovery scanning parameters. + */ + if (hci_dev_test_flag(hdev, HCI_LE_SCAN)) + hci_req_add_le_scan_disable(req); + + /* All active scans will be done with either a resolvable private + * address (when privacy feature has been enabled) or non-resolvable + * private address. + */ + err = hci_update_random_address(req, true, &own_addr_type); + if (err < 0) { + *status = MGMT_STATUS_FAILED; + return false; + } + + memset(¶m_cp, 0, sizeof(param_cp)); + param_cp.type = LE_SCAN_ACTIVE; + param_cp.interval = cpu_to_le16(interval); + param_cp.window = cpu_to_le16(DISCOV_LE_SCAN_WIN); + param_cp.own_address_type = own_addr_type; + + hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(param_cp), + ¶m_cp); + + memset(&enable_cp, 0, sizeof(enable_cp)); + enable_cp.enable = LE_SCAN_ENABLE; + enable_cp.filter_dup = LE_SCAN_FILTER_DUP_ENABLE; + + hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(enable_cp), + &enable_cp); + + return true; +} + +static bool trigger_discovery(struct hci_request *req, u8 *status) +{ + struct hci_dev *hdev = req->hdev; + + switch (hdev->discovery.type) { + case DISCOV_TYPE_BREDR: + if (!trigger_bredr_inquiry(req, status)) + return false; + break; + + case DISCOV_TYPE_INTERLEAVED: + if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, + &hdev->quirks)) { + /* During simultaneous discovery, we double LE scan + * interval. We must leave some time for the controller + * to do BR/EDR inquiry. + */ + if (!trigger_le_scan(req, DISCOV_LE_SCAN_INT * 2, + status)) + return false; + + if (!trigger_bredr_inquiry(req, status)) + return false; + + return true; + } + + if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { + *status = MGMT_STATUS_NOT_SUPPORTED; + return false; + } + /* fall through */ + + case DISCOV_TYPE_LE: + if (!trigger_le_scan(req, DISCOV_LE_SCAN_INT, status)) + return false; + break; + + default: + *status = MGMT_STATUS_INVALID_PARAMS; + return false; + } + + return true; +} + +static void start_discovery_complete(struct hci_dev *hdev, u8 status, + u16 opcode) +{ + struct mgmt_pending_cmd *cmd; + unsigned long timeout; + + BT_DBG("status %d", status); + + hci_dev_lock(hdev); + + cmd = pending_find(MGMT_OP_START_DISCOVERY, hdev); + if (!cmd) + cmd = pending_find(MGMT_OP_START_SERVICE_DISCOVERY, hdev); + + if (cmd) { + cmd->cmd_complete(cmd, mgmt_status(status)); + mgmt_pending_remove(cmd); + } + + if (status) { + hci_discovery_set_state(hdev, DISCOVERY_STOPPED); + goto unlock; + } + + hci_discovery_set_state(hdev, DISCOVERY_FINDING); + + /* If the scan involves LE scan, pick proper timeout to schedule + * hdev->le_scan_disable that will stop it. + */ + switch (hdev->discovery.type) { + case DISCOV_TYPE_LE: + timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT); + break; + case DISCOV_TYPE_INTERLEAVED: + /* When running simultaneous discovery, the LE scanning time + * should occupy the whole discovery time sine BR/EDR inquiry + * and LE scanning are scheduled by the controller. + * + * For interleaving discovery in comparison, BR/EDR inquiry + * and LE scanning are done sequentially with separate + * timeouts. + */ + if (test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) + timeout = msecs_to_jiffies(DISCOV_LE_TIMEOUT); + else + timeout = msecs_to_jiffies(hdev->discov_interleaved_timeout); + break; + case DISCOV_TYPE_BREDR: + timeout = 0; + break; + default: + BT_ERR("Invalid discovery type %d", hdev->discovery.type); + timeout = 0; + break; + } + + if (timeout) { + /* When service discovery is used and the controller has + * a strict duplicate filter, it is important to remember + * the start and duration of the scan. This is required + * for restarting scanning during the discovery phase. + */ + if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, + &hdev->quirks) && + hdev->discovery.result_filtering) { + hdev->discovery.scan_start = jiffies; + hdev->discovery.scan_duration = timeout; + } + + queue_delayed_work(hdev->workqueue, + &hdev->le_scan_disable, timeout); + } + +unlock: + hci_dev_unlock(hdev); +} + +static int start_discovery(struct sock *sk, struct hci_dev *hdev, + void *data, u16 len) +{ + struct mgmt_cp_start_discovery *cp = data; + struct mgmt_pending_cmd *cmd; + struct hci_request req; + u8 status; + int err; + + BT_DBG("%s", hdev->name); + + hci_dev_lock(hdev); + + if (!hdev_is_powered(hdev)) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY, + MGMT_STATUS_NOT_POWERED, + &cp->type, sizeof(cp->type)); + goto failed; + } + + if (hdev->discovery.state != DISCOVERY_STOPPED || + hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY, + MGMT_STATUS_BUSY, &cp->type, + sizeof(cp->type)); + goto failed; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_START_DISCOVERY, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto failed; + } + + cmd->cmd_complete = generic_cmd_complete; + + /* Clear the discovery filter first to free any previously + * allocated memory for the UUID list. + */ + hci_discovery_filter_clear(hdev); + + hdev->discovery.type = cp->type; + hdev->discovery.report_invalid_rssi = false; + + hci_req_init(&req, hdev); + + if (!trigger_discovery(&req, &status)) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_START_DISCOVERY, + status, &cp->type, sizeof(cp->type)); + mgmt_pending_remove(cmd); + goto failed; + } + + err = hci_req_run(&req, start_discovery_complete); + if (err < 0) { + mgmt_pending_remove(cmd); + goto failed; + } + + hci_discovery_set_state(hdev, DISCOVERY_STARTING); + +failed: + hci_dev_unlock(hdev); + return err; +} + +static int service_discovery_cmd_complete(struct mgmt_pending_cmd *cmd, + u8 status) +{ + return mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status, + cmd->param, 1); +} + +static int start_service_discovery(struct sock *sk, struct hci_dev *hdev, + void *data, u16 len) +{ + struct mgmt_cp_start_service_discovery *cp = data; + struct mgmt_pending_cmd *cmd; + struct hci_request req; + const u16 max_uuid_count = ((U16_MAX - sizeof(*cp)) / 16); + u16 uuid_count, expected_len; + u8 status; + int err; + + BT_DBG("%s", hdev->name); + + hci_dev_lock(hdev); + + if (!hdev_is_powered(hdev)) { + err = mgmt_cmd_complete(sk, hdev->id, + MGMT_OP_START_SERVICE_DISCOVERY, + MGMT_STATUS_NOT_POWERED, + &cp->type, sizeof(cp->type)); + goto failed; + } + + if (hdev->discovery.state != DISCOVERY_STOPPED || + hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) { + err = mgmt_cmd_complete(sk, hdev->id, + MGMT_OP_START_SERVICE_DISCOVERY, + MGMT_STATUS_BUSY, &cp->type, + sizeof(cp->type)); + goto failed; + } + + uuid_count = __le16_to_cpu(cp->uuid_count); + if (uuid_count > max_uuid_count) { + BT_ERR("service_discovery: too big uuid_count value %u", + uuid_count); + err = mgmt_cmd_complete(sk, hdev->id, + MGMT_OP_START_SERVICE_DISCOVERY, + MGMT_STATUS_INVALID_PARAMS, &cp->type, + sizeof(cp->type)); + goto failed; + } + + expected_len = sizeof(*cp) + uuid_count * 16; + if (expected_len != len) { + BT_ERR("service_discovery: expected %u bytes, got %u bytes", + expected_len, len); + err = mgmt_cmd_complete(sk, hdev->id, + MGMT_OP_START_SERVICE_DISCOVERY, + MGMT_STATUS_INVALID_PARAMS, &cp->type, + sizeof(cp->type)); + goto failed; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_START_SERVICE_DISCOVERY, + hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto failed; + } + + cmd->cmd_complete = service_discovery_cmd_complete; + + /* Clear the discovery filter first to free any previously + * allocated memory for the UUID list. + */ + hci_discovery_filter_clear(hdev); + + hdev->discovery.result_filtering = true; + hdev->discovery.type = cp->type; + hdev->discovery.rssi = cp->rssi; + hdev->discovery.uuid_count = uuid_count; + + if (uuid_count > 0) { + hdev->discovery.uuids = kmemdup(cp->uuids, uuid_count * 16, + GFP_KERNEL); + if (!hdev->discovery.uuids) { + err = mgmt_cmd_complete(sk, hdev->id, + MGMT_OP_START_SERVICE_DISCOVERY, + MGMT_STATUS_FAILED, + &cp->type, sizeof(cp->type)); + mgmt_pending_remove(cmd); + goto failed; + } + } + + hci_req_init(&req, hdev); + + if (!trigger_discovery(&req, &status)) { + err = mgmt_cmd_complete(sk, hdev->id, + MGMT_OP_START_SERVICE_DISCOVERY, + status, &cp->type, sizeof(cp->type)); + mgmt_pending_remove(cmd); + goto failed; + } + + err = hci_req_run(&req, start_discovery_complete); + if (err < 0) { + mgmt_pending_remove(cmd); + goto failed; + } + + hci_discovery_set_state(hdev, DISCOVERY_STARTING); + +failed: + hci_dev_unlock(hdev); + return err; +} + +static void stop_discovery_complete(struct hci_dev *hdev, u8 status, u16 opcode) +{ + struct mgmt_pending_cmd *cmd; + + BT_DBG("status %d", status); + + hci_dev_lock(hdev); + + cmd = pending_find(MGMT_OP_STOP_DISCOVERY, hdev); + if (cmd) { + cmd->cmd_complete(cmd, mgmt_status(status)); + mgmt_pending_remove(cmd); + } + + if (!status) + hci_discovery_set_state(hdev, DISCOVERY_STOPPED); + + hci_dev_unlock(hdev); +} + +static int stop_discovery(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_cp_stop_discovery *mgmt_cp = data; + struct mgmt_pending_cmd *cmd; + struct hci_request req; + int err; + + BT_DBG("%s", hdev->name); + + hci_dev_lock(hdev); + + if (!hci_discovery_active(hdev)) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY, + MGMT_STATUS_REJECTED, &mgmt_cp->type, + sizeof(mgmt_cp->type)); + goto unlock; + } + + if (hdev->discovery.type != mgmt_cp->type) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY, + MGMT_STATUS_INVALID_PARAMS, + &mgmt_cp->type, sizeof(mgmt_cp->type)); + goto unlock; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_STOP_DISCOVERY, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto unlock; + } + + cmd->cmd_complete = generic_cmd_complete; + + hci_req_init(&req, hdev); + + hci_stop_discovery(&req); + + err = hci_req_run(&req, stop_discovery_complete); + if (!err) { + hci_discovery_set_state(hdev, DISCOVERY_STOPPING); + goto unlock; + } + + mgmt_pending_remove(cmd); + + /* If no HCI commands were sent we're done */ + if (err == -ENODATA) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_STOP_DISCOVERY, 0, + &mgmt_cp->type, sizeof(mgmt_cp->type)); + hci_discovery_set_state(hdev, DISCOVERY_STOPPED); + } + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static int confirm_name(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_cp_confirm_name *cp = data; + struct inquiry_entry *e; + int err; + + BT_DBG("%s", hdev->name); + + hci_dev_lock(hdev); + + if (!hci_discovery_active(hdev)) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME, + MGMT_STATUS_FAILED, &cp->addr, + sizeof(cp->addr)); + goto failed; + } + + e = hci_inquiry_cache_lookup_unknown(hdev, &cp->addr.bdaddr); + if (!e) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME, + MGMT_STATUS_INVALID_PARAMS, &cp->addr, + sizeof(cp->addr)); + goto failed; + } + + if (cp->name_known) { + e->name_state = NAME_KNOWN; + list_del(&e->list); + } else { + e->name_state = NAME_NEEDED; + hci_inquiry_cache_update_resolve(hdev, e); + } + + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_CONFIRM_NAME, 0, + &cp->addr, sizeof(cp->addr)); + +failed: + hci_dev_unlock(hdev); + return err; +} + +static int block_device(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_cp_block_device *cp = data; + u8 status; + int err; + + BT_DBG("%s", hdev->name); + + if (!bdaddr_type_is_valid(cp->addr.type)) + return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_BLOCK_DEVICE, + MGMT_STATUS_INVALID_PARAMS, + &cp->addr, sizeof(cp->addr)); + + hci_dev_lock(hdev); + + err = hci_bdaddr_list_add(&hdev->blacklist, &cp->addr.bdaddr, + cp->addr.type); + if (err < 0) { + status = MGMT_STATUS_FAILED; + goto done; + } + + mgmt_event(MGMT_EV_DEVICE_BLOCKED, hdev, &cp->addr, sizeof(cp->addr), + sk); + status = MGMT_STATUS_SUCCESS; + +done: + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_BLOCK_DEVICE, status, + &cp->addr, sizeof(cp->addr)); + + hci_dev_unlock(hdev); + + return err; +} + +static int unblock_device(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_cp_unblock_device *cp = data; + u8 status; + int err; + + BT_DBG("%s", hdev->name); + + if (!bdaddr_type_is_valid(cp->addr.type)) + return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNBLOCK_DEVICE, + MGMT_STATUS_INVALID_PARAMS, + &cp->addr, sizeof(cp->addr)); + + hci_dev_lock(hdev); + + err = hci_bdaddr_list_del(&hdev->blacklist, &cp->addr.bdaddr, + cp->addr.type); + if (err < 0) { + status = MGMT_STATUS_INVALID_PARAMS; + goto done; + } + + mgmt_event(MGMT_EV_DEVICE_UNBLOCKED, hdev, &cp->addr, sizeof(cp->addr), + sk); + status = MGMT_STATUS_SUCCESS; + +done: + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_UNBLOCK_DEVICE, status, + &cp->addr, sizeof(cp->addr)); + + hci_dev_unlock(hdev); + + return err; +} + +static int set_device_id(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_cp_set_device_id *cp = data; + struct hci_request req; + int err; + __u16 source; + + BT_DBG("%s", hdev->name); + + source = __le16_to_cpu(cp->source); + + if (source > 0x0002) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEVICE_ID, + MGMT_STATUS_INVALID_PARAMS); + + hci_dev_lock(hdev); + + hdev->devid_source = source; + hdev->devid_vendor = __le16_to_cpu(cp->vendor); + hdev->devid_product = __le16_to_cpu(cp->product); + hdev->devid_version = __le16_to_cpu(cp->version); + + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_DEVICE_ID, 0, + NULL, 0); + + hci_req_init(&req, hdev); + update_eir(&req); + hci_req_run(&req, NULL); + + hci_dev_unlock(hdev); + + return err; +} + +static void enable_advertising_instance(struct hci_dev *hdev, u8 status, + u16 opcode) +{ + BT_DBG("status %d", status); +} + +static void set_advertising_complete(struct hci_dev *hdev, u8 status, + u16 opcode) +{ + struct cmd_lookup match = { NULL, hdev }; + struct hci_request req; + + hci_dev_lock(hdev); + + if (status) { + u8 mgmt_err = mgmt_status(status); + + mgmt_pending_foreach(MGMT_OP_SET_ADVERTISING, hdev, + cmd_status_rsp, &mgmt_err); + goto unlock; + } + + if (hci_dev_test_flag(hdev, HCI_LE_ADV)) + hci_dev_set_flag(hdev, HCI_ADVERTISING); + else + hci_dev_clear_flag(hdev, HCI_ADVERTISING); + + mgmt_pending_foreach(MGMT_OP_SET_ADVERTISING, hdev, settings_rsp, + &match); + + new_settings(hdev, match.sk); + + if (match.sk) + sock_put(match.sk); + + /* If "Set Advertising" was just disabled and instance advertising was + * set up earlier, then enable the advertising instance. + */ + if (hci_dev_test_flag(hdev, HCI_ADVERTISING) || + !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE)) + goto unlock; + + hci_req_init(&req, hdev); + + update_adv_data(&req); + enable_advertising(&req); + + if (hci_req_run(&req, enable_advertising_instance) < 0) + BT_ERR("Failed to re-configure advertising"); + +unlock: + hci_dev_unlock(hdev); +} + +static int set_advertising(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_mode *cp = data; + struct mgmt_pending_cmd *cmd; + struct hci_request req; + u8 val, status; + int err; + + BT_DBG("request for %s", hdev->name); + + status = mgmt_le_support(hdev); + if (status) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING, + status); + + if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING, + MGMT_STATUS_INVALID_PARAMS); + + hci_dev_lock(hdev); + + val = !!cp->val; + + /* The following conditions are ones which mean that we should + * not do any HCI communication but directly send a mgmt + * response to user space (after toggling the flag if + * necessary). + */ + if (!hdev_is_powered(hdev) || + (val == hci_dev_test_flag(hdev, HCI_ADVERTISING) && + (cp->val == 0x02) == hci_dev_test_flag(hdev, HCI_ADVERTISING_CONNECTABLE)) || + hci_conn_num(hdev, LE_LINK) > 0 || + (hci_dev_test_flag(hdev, HCI_LE_SCAN) && + hdev->le_scan_type == LE_SCAN_ACTIVE)) { + bool changed; + + if (cp->val) { + changed = !hci_dev_test_and_set_flag(hdev, HCI_ADVERTISING); + if (cp->val == 0x02) + hci_dev_set_flag(hdev, HCI_ADVERTISING_CONNECTABLE); + else + hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE); + } else { + changed = hci_dev_test_and_clear_flag(hdev, HCI_ADVERTISING); + hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE); + } + + err = send_settings_rsp(sk, MGMT_OP_SET_ADVERTISING, hdev); + if (err < 0) + goto unlock; + + if (changed) + err = new_settings(hdev, sk); + + goto unlock; + } + + if (pending_find(MGMT_OP_SET_ADVERTISING, hdev) || + pending_find(MGMT_OP_SET_LE, hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_ADVERTISING, + MGMT_STATUS_BUSY); + goto unlock; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_SET_ADVERTISING, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto unlock; + } + + hci_req_init(&req, hdev); + + if (cp->val == 0x02) + hci_dev_set_flag(hdev, HCI_ADVERTISING_CONNECTABLE); + else + hci_dev_clear_flag(hdev, HCI_ADVERTISING_CONNECTABLE); + + if (val) { + /* Switch to instance "0" for the Set Advertising setting. */ + update_adv_data_for_instance(&req, 0); + update_scan_rsp_data_for_instance(&req, 0); + enable_advertising(&req); + } else { + disable_advertising(&req); + } + + err = hci_req_run(&req, set_advertising_complete); + if (err < 0) + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static int set_static_address(struct sock *sk, struct hci_dev *hdev, + void *data, u16 len) +{ + struct mgmt_cp_set_static_address *cp = data; + int err; + + BT_DBG("%s", hdev->name); + + if (!lmp_le_capable(hdev)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_STATIC_ADDRESS, + MGMT_STATUS_NOT_SUPPORTED); + + if (hdev_is_powered(hdev)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_STATIC_ADDRESS, + MGMT_STATUS_REJECTED); + + if (bacmp(&cp->bdaddr, BDADDR_ANY)) { + if (!bacmp(&cp->bdaddr, BDADDR_NONE)) + return mgmt_cmd_status(sk, hdev->id, + MGMT_OP_SET_STATIC_ADDRESS, + MGMT_STATUS_INVALID_PARAMS); + + /* Two most significant bits shall be set */ + if ((cp->bdaddr.b[5] & 0xc0) != 0xc0) + return mgmt_cmd_status(sk, hdev->id, + MGMT_OP_SET_STATIC_ADDRESS, + MGMT_STATUS_INVALID_PARAMS); + } + + hci_dev_lock(hdev); + + bacpy(&hdev->static_addr, &cp->bdaddr); + + err = send_settings_rsp(sk, MGMT_OP_SET_STATIC_ADDRESS, hdev); + if (err < 0) + goto unlock; + + err = new_settings(hdev, sk); + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static int set_scan_params(struct sock *sk, struct hci_dev *hdev, + void *data, u16 len) +{ + struct mgmt_cp_set_scan_params *cp = data; + __u16 interval, window; + int err; + + BT_DBG("%s", hdev->name); + + if (!lmp_le_capable(hdev)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, + MGMT_STATUS_NOT_SUPPORTED); + + interval = __le16_to_cpu(cp->interval); + + if (interval < 0x0004 || interval > 0x4000) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, + MGMT_STATUS_INVALID_PARAMS); + + window = __le16_to_cpu(cp->window); + + if (window < 0x0004 || window > 0x4000) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, + MGMT_STATUS_INVALID_PARAMS); + + if (window > interval) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, + MGMT_STATUS_INVALID_PARAMS); + + hci_dev_lock(hdev); + + hdev->le_scan_interval = interval; + hdev->le_scan_window = window; + + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_SCAN_PARAMS, 0, + NULL, 0); + + /* If background scan is running, restart it so new parameters are + * loaded. + */ + if (hci_dev_test_flag(hdev, HCI_LE_SCAN) && + hdev->discovery.state == DISCOVERY_STOPPED) { + struct hci_request req; + + hci_req_init(&req, hdev); + + hci_req_add_le_scan_disable(&req); + hci_req_add_le_passive_scan(&req); + + hci_req_run(&req, NULL); + } + + hci_dev_unlock(hdev); + + return err; +} + +static void fast_connectable_complete(struct hci_dev *hdev, u8 status, + u16 opcode) +{ + struct mgmt_pending_cmd *cmd; + + BT_DBG("status 0x%02x", status); + + hci_dev_lock(hdev); + + cmd = pending_find(MGMT_OP_SET_FAST_CONNECTABLE, hdev); + if (!cmd) + goto unlock; + + if (status) { + mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, + mgmt_status(status)); + } else { + struct mgmt_mode *cp = cmd->param; + + if (cp->val) + hci_dev_set_flag(hdev, HCI_FAST_CONNECTABLE); + else + hci_dev_clear_flag(hdev, HCI_FAST_CONNECTABLE); + + send_settings_rsp(cmd->sk, MGMT_OP_SET_FAST_CONNECTABLE, hdev); + new_settings(hdev, cmd->sk); + } + + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); +} + +static int set_fast_connectable(struct sock *sk, struct hci_dev *hdev, + void *data, u16 len) +{ + struct mgmt_mode *cp = data; + struct mgmt_pending_cmd *cmd; + struct hci_request req; + int err; + + BT_DBG("%s", hdev->name); + + if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) || + hdev->hci_ver < BLUETOOTH_VER_1_2) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, + MGMT_STATUS_NOT_SUPPORTED); + + if (cp->val != 0x00 && cp->val != 0x01) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, + MGMT_STATUS_INVALID_PARAMS); + + hci_dev_lock(hdev); + + if (pending_find(MGMT_OP_SET_FAST_CONNECTABLE, hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, + MGMT_STATUS_BUSY); + goto unlock; + } + + if (!!cp->val == hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE)) { + err = send_settings_rsp(sk, MGMT_OP_SET_FAST_CONNECTABLE, + hdev); + goto unlock; + } + + if (!hdev_is_powered(hdev)) { + hci_dev_change_flag(hdev, HCI_FAST_CONNECTABLE); + err = send_settings_rsp(sk, MGMT_OP_SET_FAST_CONNECTABLE, + hdev); + new_settings(hdev, sk); + goto unlock; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_SET_FAST_CONNECTABLE, hdev, + data, len); + if (!cmd) { + err = -ENOMEM; + goto unlock; + } + + hci_req_init(&req, hdev); + + write_fast_connectable(&req, cp->val); + + err = hci_req_run(&req, fast_connectable_complete); + if (err < 0) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_FAST_CONNECTABLE, + MGMT_STATUS_FAILED); + mgmt_pending_remove(cmd); + } + +unlock: + hci_dev_unlock(hdev); + + return err; +} + +static void set_bredr_complete(struct hci_dev *hdev, u8 status, u16 opcode) +{ + struct mgmt_pending_cmd *cmd; + + BT_DBG("status 0x%02x", status); + + hci_dev_lock(hdev); + + cmd = pending_find(MGMT_OP_SET_BREDR, hdev); + if (!cmd) + goto unlock; + + if (status) { + u8 mgmt_err = mgmt_status(status); + + /* We need to restore the flag if related HCI commands + * failed. + */ + hci_dev_clear_flag(hdev, HCI_BREDR_ENABLED); + + mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, mgmt_err); + } else { + send_settings_rsp(cmd->sk, MGMT_OP_SET_BREDR, hdev); + new_settings(hdev, cmd->sk); + } + + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); +} + +static int set_bredr(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) +{ + struct mgmt_mode *cp = data; + struct mgmt_pending_cmd *cmd; + struct hci_request req; + int err; + + BT_DBG("request for %s", hdev->name); + + if (!lmp_bredr_capable(hdev) || !lmp_le_capable(hdev)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR, + MGMT_STATUS_NOT_SUPPORTED); + + if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR, + MGMT_STATUS_REJECTED); + + if (cp->val != 0x00 && cp->val != 0x01) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR, + MGMT_STATUS_INVALID_PARAMS); + + hci_dev_lock(hdev); + + if (cp->val == hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { + err = send_settings_rsp(sk, MGMT_OP_SET_BREDR, hdev); + goto unlock; + } + + if (!hdev_is_powered(hdev)) { + if (!cp->val) { + hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); + hci_dev_clear_flag(hdev, HCI_SSP_ENABLED); + hci_dev_clear_flag(hdev, HCI_LINK_SECURITY); + hci_dev_clear_flag(hdev, HCI_FAST_CONNECTABLE); + hci_dev_clear_flag(hdev, HCI_HS_ENABLED); + } + + hci_dev_change_flag(hdev, HCI_BREDR_ENABLED); + + err = send_settings_rsp(sk, MGMT_OP_SET_BREDR, hdev); + if (err < 0) + goto unlock; + + err = new_settings(hdev, sk); + goto unlock; + } + + /* Reject disabling when powered on */ + if (!cp->val) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR, + MGMT_STATUS_REJECTED); + goto unlock; + } else { + /* When configuring a dual-mode controller to operate + * with LE only and using a static address, then switching + * BR/EDR back on is not allowed. + * + * Dual-mode controllers shall operate with the public + * address as its identity address for BR/EDR and LE. So + * reject the attempt to create an invalid configuration. + * + * The same restrictions applies when secure connections + * has been enabled. For BR/EDR this is a controller feature + * while for LE it is a host stack feature. This means that + * switching BR/EDR back on when secure connections has been + * enabled is not a supported transaction. + */ + if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && + (bacmp(&hdev->static_addr, BDADDR_ANY) || + hci_dev_test_flag(hdev, HCI_SC_ENABLED))) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR, + MGMT_STATUS_REJECTED); + goto unlock; + } + } + + if (pending_find(MGMT_OP_SET_BREDR, hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BREDR, + MGMT_STATUS_BUSY); + goto unlock; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_SET_BREDR, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto unlock; + } + + /* We need to flip the bit already here so that update_adv_data + * generates the correct flags. + */ + hci_dev_set_flag(hdev, HCI_BREDR_ENABLED); + + hci_req_init(&req, hdev); + + write_fast_connectable(&req, false); + __hci_update_page_scan(&req); + + /* Since only the advertising data flags will change, there + * is no need to update the scan response data. + */ + update_adv_data(&req); + + err = hci_req_run(&req, set_bredr_complete); + if (err < 0) + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static void sc_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode) +{ + struct mgmt_pending_cmd *cmd; + struct mgmt_mode *cp; + + BT_DBG("%s status %u", hdev->name, status); + + hci_dev_lock(hdev); + + cmd = pending_find(MGMT_OP_SET_SECURE_CONN, hdev); + if (!cmd) + goto unlock; + + if (status) { + mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, + mgmt_status(status)); + goto remove; + } + + cp = cmd->param; + + switch (cp->val) { + case 0x00: + hci_dev_clear_flag(hdev, HCI_SC_ENABLED); + hci_dev_clear_flag(hdev, HCI_SC_ONLY); + break; + case 0x01: + hci_dev_set_flag(hdev, HCI_SC_ENABLED); + hci_dev_clear_flag(hdev, HCI_SC_ONLY); + break; + case 0x02: + hci_dev_set_flag(hdev, HCI_SC_ENABLED); + hci_dev_set_flag(hdev, HCI_SC_ONLY); + break; + } + + send_settings_rsp(cmd->sk, MGMT_OP_SET_SECURE_CONN, hdev); + new_settings(hdev, cmd->sk); + +remove: + mgmt_pending_remove(cmd); +unlock: + hci_dev_unlock(hdev); +} + +static int set_secure_conn(struct sock *sk, struct hci_dev *hdev, + void *data, u16 len) +{ + struct mgmt_mode *cp = data; + struct mgmt_pending_cmd *cmd; + struct hci_request req; + u8 val; + int err; + + BT_DBG("request for %s", hdev->name); + + if (!lmp_sc_capable(hdev) && + !hci_dev_test_flag(hdev, HCI_LE_ENABLED)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN, + MGMT_STATUS_NOT_SUPPORTED); + + if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && + lmp_sc_capable(hdev) && + !hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN, + MGMT_STATUS_REJECTED); + + if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN, + MGMT_STATUS_INVALID_PARAMS); + + hci_dev_lock(hdev); + + if (!hdev_is_powered(hdev) || !lmp_sc_capable(hdev) || + !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { + bool changed; + + if (cp->val) { + changed = !hci_dev_test_and_set_flag(hdev, + HCI_SC_ENABLED); + if (cp->val == 0x02) + hci_dev_set_flag(hdev, HCI_SC_ONLY); + else + hci_dev_clear_flag(hdev, HCI_SC_ONLY); + } else { + changed = hci_dev_test_and_clear_flag(hdev, + HCI_SC_ENABLED); + hci_dev_clear_flag(hdev, HCI_SC_ONLY); + } + + err = send_settings_rsp(sk, MGMT_OP_SET_SECURE_CONN, hdev); + if (err < 0) + goto failed; + + if (changed) + err = new_settings(hdev, sk); + + goto failed; + } + + if (pending_find(MGMT_OP_SET_SECURE_CONN, hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_SECURE_CONN, + MGMT_STATUS_BUSY); + goto failed; + } + + val = !!cp->val; + + if (val == hci_dev_test_flag(hdev, HCI_SC_ENABLED) && + (cp->val == 0x02) == hci_dev_test_flag(hdev, HCI_SC_ONLY)) { + err = send_settings_rsp(sk, MGMT_OP_SET_SECURE_CONN, hdev); + goto failed; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_SET_SECURE_CONN, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto failed; + } + + hci_req_init(&req, hdev); + hci_req_add(&req, HCI_OP_WRITE_SC_SUPPORT, 1, &val); + err = hci_req_run(&req, sc_enable_complete); + if (err < 0) { + mgmt_pending_remove(cmd); + goto failed; + } + +failed: + hci_dev_unlock(hdev); + return err; +} + +static int set_debug_keys(struct sock *sk, struct hci_dev *hdev, + void *data, u16 len) +{ + struct mgmt_mode *cp = data; + bool changed, use_changed; + int err; + + BT_DBG("request for %s", hdev->name); + + if (cp->val != 0x00 && cp->val != 0x01 && cp->val != 0x02) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEBUG_KEYS, + MGMT_STATUS_INVALID_PARAMS); + + hci_dev_lock(hdev); + + if (cp->val) + changed = !hci_dev_test_and_set_flag(hdev, HCI_KEEP_DEBUG_KEYS); + else + changed = hci_dev_test_and_clear_flag(hdev, + HCI_KEEP_DEBUG_KEYS); + + if (cp->val == 0x02) + use_changed = !hci_dev_test_and_set_flag(hdev, + HCI_USE_DEBUG_KEYS); + else + use_changed = hci_dev_test_and_clear_flag(hdev, + HCI_USE_DEBUG_KEYS); + + if (hdev_is_powered(hdev) && use_changed && + hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { + u8 mode = (cp->val == 0x02) ? 0x01 : 0x00; + hci_send_cmd(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE, + sizeof(mode), &mode); + } + + err = send_settings_rsp(sk, MGMT_OP_SET_DEBUG_KEYS, hdev); + if (err < 0) + goto unlock; + + if (changed) + err = new_settings(hdev, sk); + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static int set_privacy(struct sock *sk, struct hci_dev *hdev, void *cp_data, + u16 len) +{ + struct mgmt_cp_set_privacy *cp = cp_data; + bool changed; + int err; + + BT_DBG("request for %s", hdev->name); + + if (!lmp_le_capable(hdev)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY, + MGMT_STATUS_NOT_SUPPORTED); + + if (cp->privacy != 0x00 && cp->privacy != 0x01) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY, + MGMT_STATUS_INVALID_PARAMS); + + if (hdev_is_powered(hdev)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PRIVACY, + MGMT_STATUS_REJECTED); + + hci_dev_lock(hdev); + + /* If user space supports this command it is also expected to + * handle IRKs. Therefore, set the HCI_RPA_RESOLVING flag. + */ + hci_dev_set_flag(hdev, HCI_RPA_RESOLVING); + + if (cp->privacy) { + changed = !hci_dev_test_and_set_flag(hdev, HCI_PRIVACY); + memcpy(hdev->irk, cp->irk, sizeof(hdev->irk)); + hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); + } else { + changed = hci_dev_test_and_clear_flag(hdev, HCI_PRIVACY); + memset(hdev->irk, 0, sizeof(hdev->irk)); + hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED); + } + + err = send_settings_rsp(sk, MGMT_OP_SET_PRIVACY, hdev); + if (err < 0) + goto unlock; + + if (changed) + err = new_settings(hdev, sk); + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static bool irk_is_valid(struct mgmt_irk_info *irk) +{ + switch (irk->addr.type) { + case BDADDR_LE_PUBLIC: + return true; + + case BDADDR_LE_RANDOM: + /* Two most significant bits shall be set */ + if ((irk->addr.bdaddr.b[5] & 0xc0) != 0xc0) + return false; + return true; + } + + return false; +} + +static int load_irks(struct sock *sk, struct hci_dev *hdev, void *cp_data, + u16 len) +{ + struct mgmt_cp_load_irks *cp = cp_data; + const u16 max_irk_count = ((U16_MAX - sizeof(*cp)) / + sizeof(struct mgmt_irk_info)); + u16 irk_count, expected_len; + int i, err; + + BT_DBG("request for %s", hdev->name); + + if (!lmp_le_capable(hdev)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS, + MGMT_STATUS_NOT_SUPPORTED); + + irk_count = __le16_to_cpu(cp->irk_count); + if (irk_count > max_irk_count) { + BT_ERR("load_irks: too big irk_count value %u", irk_count); + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS, + MGMT_STATUS_INVALID_PARAMS); + } + + expected_len = sizeof(*cp) + irk_count * sizeof(struct mgmt_irk_info); + if (expected_len != len) { + BT_ERR("load_irks: expected %u bytes, got %u bytes", + expected_len, len); + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_IRKS, + MGMT_STATUS_INVALID_PARAMS); + } + + BT_DBG("%s irk_count %u", hdev->name, irk_count); + + for (i = 0; i < irk_count; i++) { + struct mgmt_irk_info *key = &cp->irks[i]; + + if (!irk_is_valid(key)) + return mgmt_cmd_status(sk, hdev->id, + MGMT_OP_LOAD_IRKS, + MGMT_STATUS_INVALID_PARAMS); + } + + hci_dev_lock(hdev); + + hci_smp_irks_clear(hdev); + + for (i = 0; i < irk_count; i++) { + struct mgmt_irk_info *irk = &cp->irks[i]; + u8 addr_type; + + if (irk->addr.type == BDADDR_LE_PUBLIC) + addr_type = ADDR_LE_DEV_PUBLIC; + else + addr_type = ADDR_LE_DEV_RANDOM; + + hci_add_irk(hdev, &irk->addr.bdaddr, addr_type, irk->val, + BDADDR_ANY); + } + + hci_dev_set_flag(hdev, HCI_RPA_RESOLVING); + + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_IRKS, 0, NULL, 0); + + hci_dev_unlock(hdev); + + return err; +} + +static bool ltk_is_valid(struct mgmt_ltk_info *key) +{ + if (key->master != 0x00 && key->master != 0x01) + return false; + + switch (key->addr.type) { + case BDADDR_LE_PUBLIC: + return true; + + case BDADDR_LE_RANDOM: + /* Two most significant bits shall be set */ + if ((key->addr.bdaddr.b[5] & 0xc0) != 0xc0) + return false; + return true; + } + + return false; +} + +static int load_long_term_keys(struct sock *sk, struct hci_dev *hdev, + void *cp_data, u16 len) +{ + struct mgmt_cp_load_long_term_keys *cp = cp_data; + const u16 max_key_count = ((U16_MAX - sizeof(*cp)) / + sizeof(struct mgmt_ltk_info)); + u16 key_count, expected_len; + int i, err; + + BT_DBG("request for %s", hdev->name); + + if (!lmp_le_capable(hdev)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS, + MGMT_STATUS_NOT_SUPPORTED); + + key_count = __le16_to_cpu(cp->key_count); + if (key_count > max_key_count) { + BT_ERR("load_ltks: too big key_count value %u", key_count); + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS, + MGMT_STATUS_INVALID_PARAMS); + } + + expected_len = sizeof(*cp) + key_count * + sizeof(struct mgmt_ltk_info); + if (expected_len != len) { + BT_ERR("load_keys: expected %u bytes, got %u bytes", + expected_len, len); + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS, + MGMT_STATUS_INVALID_PARAMS); + } + + BT_DBG("%s key_count %u", hdev->name, key_count); + + for (i = 0; i < key_count; i++) { + struct mgmt_ltk_info *key = &cp->keys[i]; + + if (!ltk_is_valid(key)) + return mgmt_cmd_status(sk, hdev->id, + MGMT_OP_LOAD_LONG_TERM_KEYS, + MGMT_STATUS_INVALID_PARAMS); + } + + hci_dev_lock(hdev); + + hci_smp_ltks_clear(hdev); + + for (i = 0; i < key_count; i++) { + struct mgmt_ltk_info *key = &cp->keys[i]; + u8 type, addr_type, authenticated; + + if (key->addr.type == BDADDR_LE_PUBLIC) + addr_type = ADDR_LE_DEV_PUBLIC; + else + addr_type = ADDR_LE_DEV_RANDOM; + + switch (key->type) { + case MGMT_LTK_UNAUTHENTICATED: + authenticated = 0x00; + type = key->master ? SMP_LTK : SMP_LTK_SLAVE; + break; + case MGMT_LTK_AUTHENTICATED: + authenticated = 0x01; + type = key->master ? SMP_LTK : SMP_LTK_SLAVE; + break; + case MGMT_LTK_P256_UNAUTH: + authenticated = 0x00; + type = SMP_LTK_P256; + break; + case MGMT_LTK_P256_AUTH: + authenticated = 0x01; + type = SMP_LTK_P256; + break; + case MGMT_LTK_P256_DEBUG: + authenticated = 0x00; + type = SMP_LTK_P256_DEBUG; + default: + continue; + } + + hci_add_ltk(hdev, &key->addr.bdaddr, addr_type, type, + authenticated, key->val, key->enc_size, key->ediv, + key->rand); + } + + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_LONG_TERM_KEYS, 0, + NULL, 0); + + hci_dev_unlock(hdev); + + return err; +} + +static int conn_info_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status) +{ + struct hci_conn *conn = cmd->user_data; + struct mgmt_rp_get_conn_info rp; + int err; + + memcpy(&rp.addr, cmd->param, sizeof(rp.addr)); + + if (status == MGMT_STATUS_SUCCESS) { + rp.rssi = conn->rssi; + rp.tx_power = conn->tx_power; + rp.max_tx_power = conn->max_tx_power; + } else { + rp.rssi = HCI_RSSI_INVALID; + rp.tx_power = HCI_TX_POWER_INVALID; + rp.max_tx_power = HCI_TX_POWER_INVALID; + } + + err = mgmt_cmd_complete(cmd->sk, cmd->index, MGMT_OP_GET_CONN_INFO, + status, &rp, sizeof(rp)); + + hci_conn_drop(conn); + hci_conn_put(conn); + + return err; +} + +static void conn_info_refresh_complete(struct hci_dev *hdev, u8 hci_status, + u16 opcode) +{ + struct hci_cp_read_rssi *cp; + struct mgmt_pending_cmd *cmd; + struct hci_conn *conn; + u16 handle; + u8 status; + + BT_DBG("status 0x%02x", hci_status); + + hci_dev_lock(hdev); + + /* Commands sent in request are either Read RSSI or Read Transmit Power + * Level so we check which one was last sent to retrieve connection + * handle. Both commands have handle as first parameter so it's safe to + * cast data on the same command struct. + * + * First command sent is always Read RSSI and we fail only if it fails. + * In other case we simply override error to indicate success as we + * already remembered if TX power value is actually valid. + */ + cp = hci_sent_cmd_data(hdev, HCI_OP_READ_RSSI); + if (!cp) { + cp = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER); + status = MGMT_STATUS_SUCCESS; + } else { + status = mgmt_status(hci_status); + } + + if (!cp) { + BT_ERR("invalid sent_cmd in conn_info response"); + goto unlock; + } + + handle = __le16_to_cpu(cp->handle); + conn = hci_conn_hash_lookup_handle(hdev, handle); + if (!conn) { + BT_ERR("unknown handle (%d) in conn_info response", handle); + goto unlock; + } + + cmd = pending_find_data(MGMT_OP_GET_CONN_INFO, hdev, conn); + if (!cmd) + goto unlock; + + cmd->cmd_complete(cmd, status); + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); +} + +static int get_conn_info(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_cp_get_conn_info *cp = data; + struct mgmt_rp_get_conn_info rp; + struct hci_conn *conn; + unsigned long conn_info_age; + int err = 0; + + BT_DBG("%s", hdev->name); + + memset(&rp, 0, sizeof(rp)); + bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr); + rp.addr.type = cp->addr.type; + + if (!bdaddr_type_is_valid(cp->addr.type)) + return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO, + MGMT_STATUS_INVALID_PARAMS, + &rp, sizeof(rp)); + + hci_dev_lock(hdev); + + if (!hdev_is_powered(hdev)) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO, + MGMT_STATUS_NOT_POWERED, &rp, + sizeof(rp)); + goto unlock; + } + + if (cp->addr.type == BDADDR_BREDR) + conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, + &cp->addr.bdaddr); + else + conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->addr.bdaddr); + + if (!conn || conn->state != BT_CONNECTED) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO, + MGMT_STATUS_NOT_CONNECTED, &rp, + sizeof(rp)); + goto unlock; + } + + if (pending_find_data(MGMT_OP_GET_CONN_INFO, hdev, conn)) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO, + MGMT_STATUS_BUSY, &rp, sizeof(rp)); + goto unlock; + } + + /* To avoid client trying to guess when to poll again for information we + * calculate conn info age as random value between min/max set in hdev. + */ + conn_info_age = hdev->conn_info_min_age + + prandom_u32_max(hdev->conn_info_max_age - + hdev->conn_info_min_age); + + /* Query controller to refresh cached values if they are too old or were + * never read. + */ + if (time_after(jiffies, conn->conn_info_timestamp + + msecs_to_jiffies(conn_info_age)) || + !conn->conn_info_timestamp) { + struct hci_request req; + struct hci_cp_read_tx_power req_txp_cp; + struct hci_cp_read_rssi req_rssi_cp; + struct mgmt_pending_cmd *cmd; + + hci_req_init(&req, hdev); + req_rssi_cp.handle = cpu_to_le16(conn->handle); + hci_req_add(&req, HCI_OP_READ_RSSI, sizeof(req_rssi_cp), + &req_rssi_cp); + + /* For LE links TX power does not change thus we don't need to + * query for it once value is known. + */ + if (!bdaddr_type_is_le(cp->addr.type) || + conn->tx_power == HCI_TX_POWER_INVALID) { + req_txp_cp.handle = cpu_to_le16(conn->handle); + req_txp_cp.type = 0x00; + hci_req_add(&req, HCI_OP_READ_TX_POWER, + sizeof(req_txp_cp), &req_txp_cp); + } + + /* Max TX power needs to be read only once per connection */ + if (conn->max_tx_power == HCI_TX_POWER_INVALID) { + req_txp_cp.handle = cpu_to_le16(conn->handle); + req_txp_cp.type = 0x01; + hci_req_add(&req, HCI_OP_READ_TX_POWER, + sizeof(req_txp_cp), &req_txp_cp); + } + + err = hci_req_run(&req, conn_info_refresh_complete); + if (err < 0) + goto unlock; + + cmd = mgmt_pending_add(sk, MGMT_OP_GET_CONN_INFO, hdev, + data, len); + if (!cmd) { + err = -ENOMEM; + goto unlock; + } + + hci_conn_hold(conn); + cmd->user_data = hci_conn_get(conn); + cmd->cmd_complete = conn_info_cmd_complete; + + conn->conn_info_timestamp = jiffies; + } else { + /* Cache is valid, just reply with values cached in hci_conn */ + rp.rssi = conn->rssi; + rp.tx_power = conn->tx_power; + rp.max_tx_power = conn->max_tx_power; + + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CONN_INFO, + MGMT_STATUS_SUCCESS, &rp, sizeof(rp)); + } + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static int clock_info_cmd_complete(struct mgmt_pending_cmd *cmd, u8 status) +{ + struct hci_conn *conn = cmd->user_data; + struct mgmt_rp_get_clock_info rp; + struct hci_dev *hdev; + int err; + + memset(&rp, 0, sizeof(rp)); + memcpy(&rp.addr, &cmd->param, sizeof(rp.addr)); + + if (status) + goto complete; + + hdev = hci_dev_get(cmd->index); + if (hdev) { + rp.local_clock = cpu_to_le32(hdev->clock); + hci_dev_put(hdev); + } + + if (conn) { + rp.piconet_clock = cpu_to_le32(conn->clock); + rp.accuracy = cpu_to_le16(conn->clock_accuracy); + } + +complete: + err = mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, status, &rp, + sizeof(rp)); + + if (conn) { + hci_conn_drop(conn); + hci_conn_put(conn); + } + + return err; +} + +static void get_clock_info_complete(struct hci_dev *hdev, u8 status, u16 opcode) +{ + struct hci_cp_read_clock *hci_cp; + struct mgmt_pending_cmd *cmd; + struct hci_conn *conn; + + BT_DBG("%s status %u", hdev->name, status); + + hci_dev_lock(hdev); + + hci_cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK); + if (!hci_cp) + goto unlock; + + if (hci_cp->which) { + u16 handle = __le16_to_cpu(hci_cp->handle); + conn = hci_conn_hash_lookup_handle(hdev, handle); + } else { + conn = NULL; + } + + cmd = pending_find_data(MGMT_OP_GET_CLOCK_INFO, hdev, conn); + if (!cmd) + goto unlock; + + cmd->cmd_complete(cmd, mgmt_status(status)); + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); +} + +static int get_clock_info(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_cp_get_clock_info *cp = data; + struct mgmt_rp_get_clock_info rp; + struct hci_cp_read_clock hci_cp; + struct mgmt_pending_cmd *cmd; + struct hci_request req; + struct hci_conn *conn; + int err; + + BT_DBG("%s", hdev->name); + + memset(&rp, 0, sizeof(rp)); + bacpy(&rp.addr.bdaddr, &cp->addr.bdaddr); + rp.addr.type = cp->addr.type; + + if (cp->addr.type != BDADDR_BREDR) + return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CLOCK_INFO, + MGMT_STATUS_INVALID_PARAMS, + &rp, sizeof(rp)); + + hci_dev_lock(hdev); + + if (!hdev_is_powered(hdev)) { + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_GET_CLOCK_INFO, + MGMT_STATUS_NOT_POWERED, &rp, + sizeof(rp)); + goto unlock; + } + + if (bacmp(&cp->addr.bdaddr, BDADDR_ANY)) { + conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, + &cp->addr.bdaddr); + if (!conn || conn->state != BT_CONNECTED) { + err = mgmt_cmd_complete(sk, hdev->id, + MGMT_OP_GET_CLOCK_INFO, + MGMT_STATUS_NOT_CONNECTED, + &rp, sizeof(rp)); + goto unlock; + } + } else { + conn = NULL; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_GET_CLOCK_INFO, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto unlock; + } + + cmd->cmd_complete = clock_info_cmd_complete; + + hci_req_init(&req, hdev); + + memset(&hci_cp, 0, sizeof(hci_cp)); + hci_req_add(&req, HCI_OP_READ_CLOCK, sizeof(hci_cp), &hci_cp); + + if (conn) { + hci_conn_hold(conn); + cmd->user_data = hci_conn_get(conn); + + hci_cp.handle = cpu_to_le16(conn->handle); + hci_cp.which = 0x01; /* Piconet clock */ + hci_req_add(&req, HCI_OP_READ_CLOCK, sizeof(hci_cp), &hci_cp); + } + + err = hci_req_run(&req, get_clock_info_complete); + if (err < 0) + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static bool is_connected(struct hci_dev *hdev, bdaddr_t *addr, u8 type) +{ + struct hci_conn *conn; + + conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, addr); + if (!conn) + return false; + + if (conn->dst_type != type) + return false; + + if (conn->state != BT_CONNECTED) + return false; + + return true; +} + +/* This function requires the caller holds hdev->lock */ +static int hci_conn_params_set(struct hci_request *req, bdaddr_t *addr, + u8 addr_type, u8 auto_connect) +{ + struct hci_dev *hdev = req->hdev; + struct hci_conn_params *params; + + params = hci_conn_params_add(hdev, addr, addr_type); + if (!params) + return -EIO; + + if (params->auto_connect == auto_connect) + return 0; + + list_del_init(¶ms->action); + + switch (auto_connect) { + case HCI_AUTO_CONN_DISABLED: + case HCI_AUTO_CONN_LINK_LOSS: + __hci_update_background_scan(req); + break; + case HCI_AUTO_CONN_REPORT: + list_add(¶ms->action, &hdev->pend_le_reports); + __hci_update_background_scan(req); + break; + case HCI_AUTO_CONN_DIRECT: + case HCI_AUTO_CONN_ALWAYS: + if (!is_connected(hdev, addr, addr_type)) { + list_add(¶ms->action, &hdev->pend_le_conns); + __hci_update_background_scan(req); + } + break; + } + + params->auto_connect = auto_connect; + + BT_DBG("addr %pMR (type %u) auto_connect %u", addr, addr_type, + auto_connect); + + return 0; +} + +static void device_added(struct sock *sk, struct hci_dev *hdev, + bdaddr_t *bdaddr, u8 type, u8 action) +{ + struct mgmt_ev_device_added ev; + + bacpy(&ev.addr.bdaddr, bdaddr); + ev.addr.type = type; + ev.action = action; + + mgmt_event(MGMT_EV_DEVICE_ADDED, hdev, &ev, sizeof(ev), sk); +} + +static void add_device_complete(struct hci_dev *hdev, u8 status, u16 opcode) +{ + struct mgmt_pending_cmd *cmd; + + BT_DBG("status 0x%02x", status); + + hci_dev_lock(hdev); + + cmd = pending_find(MGMT_OP_ADD_DEVICE, hdev); + if (!cmd) + goto unlock; + + cmd->cmd_complete(cmd, mgmt_status(status)); + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); +} + +static int add_device(struct sock *sk, struct hci_dev *hdev, + void *data, u16 len) +{ + struct mgmt_cp_add_device *cp = data; + struct mgmt_pending_cmd *cmd; + struct hci_request req; + u8 auto_conn, addr_type; + int err; + + BT_DBG("%s", hdev->name); + + if (!bdaddr_type_is_valid(cp->addr.type) || + !bacmp(&cp->addr.bdaddr, BDADDR_ANY)) + return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_DEVICE, + MGMT_STATUS_INVALID_PARAMS, + &cp->addr, sizeof(cp->addr)); + + if (cp->action != 0x00 && cp->action != 0x01 && cp->action != 0x02) + return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_DEVICE, + MGMT_STATUS_INVALID_PARAMS, + &cp->addr, sizeof(cp->addr)); + + hci_req_init(&req, hdev); + + hci_dev_lock(hdev); + + cmd = mgmt_pending_add(sk, MGMT_OP_ADD_DEVICE, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto unlock; + } + + cmd->cmd_complete = addr_cmd_complete; + + if (cp->addr.type == BDADDR_BREDR) { + /* Only incoming connections action is supported for now */ + if (cp->action != 0x01) { + err = cmd->cmd_complete(cmd, + MGMT_STATUS_INVALID_PARAMS); + mgmt_pending_remove(cmd); + goto unlock; + } + + err = hci_bdaddr_list_add(&hdev->whitelist, &cp->addr.bdaddr, + cp->addr.type); + if (err) + goto unlock; + + __hci_update_page_scan(&req); + + goto added; + } + + if (cp->addr.type == BDADDR_LE_PUBLIC) + addr_type = ADDR_LE_DEV_PUBLIC; + else + addr_type = ADDR_LE_DEV_RANDOM; + + if (cp->action == 0x02) + auto_conn = HCI_AUTO_CONN_ALWAYS; + else if (cp->action == 0x01) + auto_conn = HCI_AUTO_CONN_DIRECT; + else + auto_conn = HCI_AUTO_CONN_REPORT; + + /* If the connection parameters don't exist for this device, + * they will be created and configured with defaults. + */ + if (hci_conn_params_set(&req, &cp->addr.bdaddr, addr_type, + auto_conn) < 0) { + err = cmd->cmd_complete(cmd, MGMT_STATUS_FAILED); + mgmt_pending_remove(cmd); + goto unlock; + } + +added: + device_added(sk, hdev, &cp->addr.bdaddr, cp->addr.type, cp->action); + + err = hci_req_run(&req, add_device_complete); + if (err < 0) { + /* ENODATA means no HCI commands were needed (e.g. if + * the adapter is powered off). + */ + if (err == -ENODATA) + err = cmd->cmd_complete(cmd, MGMT_STATUS_SUCCESS); + mgmt_pending_remove(cmd); + } + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static void device_removed(struct sock *sk, struct hci_dev *hdev, + bdaddr_t *bdaddr, u8 type) +{ + struct mgmt_ev_device_removed ev; + + bacpy(&ev.addr.bdaddr, bdaddr); + ev.addr.type = type; + + mgmt_event(MGMT_EV_DEVICE_REMOVED, hdev, &ev, sizeof(ev), sk); +} + +static void remove_device_complete(struct hci_dev *hdev, u8 status, u16 opcode) +{ + struct mgmt_pending_cmd *cmd; + + BT_DBG("status 0x%02x", status); + + hci_dev_lock(hdev); + + cmd = pending_find(MGMT_OP_REMOVE_DEVICE, hdev); + if (!cmd) + goto unlock; + + cmd->cmd_complete(cmd, mgmt_status(status)); + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); +} + +static int remove_device(struct sock *sk, struct hci_dev *hdev, + void *data, u16 len) +{ + struct mgmt_cp_remove_device *cp = data; + struct mgmt_pending_cmd *cmd; + struct hci_request req; + int err; + + BT_DBG("%s", hdev->name); + + hci_req_init(&req, hdev); + + hci_dev_lock(hdev); + + cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_DEVICE, hdev, data, len); + if (!cmd) { + err = -ENOMEM; + goto unlock; + } + + cmd->cmd_complete = addr_cmd_complete; + + if (bacmp(&cp->addr.bdaddr, BDADDR_ANY)) { + struct hci_conn_params *params; + u8 addr_type; + + if (!bdaddr_type_is_valid(cp->addr.type)) { + err = cmd->cmd_complete(cmd, + MGMT_STATUS_INVALID_PARAMS); + mgmt_pending_remove(cmd); + goto unlock; + } + + if (cp->addr.type == BDADDR_BREDR) { + err = hci_bdaddr_list_del(&hdev->whitelist, + &cp->addr.bdaddr, + cp->addr.type); + if (err) { + err = cmd->cmd_complete(cmd, + MGMT_STATUS_INVALID_PARAMS); + mgmt_pending_remove(cmd); + goto unlock; + } + + __hci_update_page_scan(&req); + + device_removed(sk, hdev, &cp->addr.bdaddr, + cp->addr.type); + goto complete; + } + + if (cp->addr.type == BDADDR_LE_PUBLIC) + addr_type = ADDR_LE_DEV_PUBLIC; + else + addr_type = ADDR_LE_DEV_RANDOM; + + params = hci_conn_params_lookup(hdev, &cp->addr.bdaddr, + addr_type); + if (!params) { + err = cmd->cmd_complete(cmd, + MGMT_STATUS_INVALID_PARAMS); + mgmt_pending_remove(cmd); + goto unlock; + } + + if (params->auto_connect == HCI_AUTO_CONN_DISABLED) { + err = cmd->cmd_complete(cmd, + MGMT_STATUS_INVALID_PARAMS); + mgmt_pending_remove(cmd); + goto unlock; + } + + list_del(¶ms->action); + list_del(¶ms->list); + kfree(params); + __hci_update_background_scan(&req); + + device_removed(sk, hdev, &cp->addr.bdaddr, cp->addr.type); + } else { + struct hci_conn_params *p, *tmp; + struct bdaddr_list *b, *btmp; + + if (cp->addr.type) { + err = cmd->cmd_complete(cmd, + MGMT_STATUS_INVALID_PARAMS); + mgmt_pending_remove(cmd); + goto unlock; + } + + list_for_each_entry_safe(b, btmp, &hdev->whitelist, list) { + device_removed(sk, hdev, &b->bdaddr, b->bdaddr_type); + list_del(&b->list); + kfree(b); + } + + __hci_update_page_scan(&req); + + list_for_each_entry_safe(p, tmp, &hdev->le_conn_params, list) { + if (p->auto_connect == HCI_AUTO_CONN_DISABLED) + continue; + device_removed(sk, hdev, &p->addr, p->addr_type); + list_del(&p->action); + list_del(&p->list); + kfree(p); + } + + BT_DBG("All LE connection parameters were removed"); + + __hci_update_background_scan(&req); + } + +complete: + err = hci_req_run(&req, remove_device_complete); + if (err < 0) { + /* ENODATA means no HCI commands were needed (e.g. if + * the adapter is powered off). + */ + if (err == -ENODATA) + err = cmd->cmd_complete(cmd, MGMT_STATUS_SUCCESS); + mgmt_pending_remove(cmd); + } + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static int load_conn_param(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + struct mgmt_cp_load_conn_param *cp = data; + const u16 max_param_count = ((U16_MAX - sizeof(*cp)) / + sizeof(struct mgmt_conn_param)); + u16 param_count, expected_len; + int i; + + if (!lmp_le_capable(hdev)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM, + MGMT_STATUS_NOT_SUPPORTED); + + param_count = __le16_to_cpu(cp->param_count); + if (param_count > max_param_count) { + BT_ERR("load_conn_param: too big param_count value %u", + param_count); + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM, + MGMT_STATUS_INVALID_PARAMS); + } + + expected_len = sizeof(*cp) + param_count * + sizeof(struct mgmt_conn_param); + if (expected_len != len) { + BT_ERR("load_conn_param: expected %u bytes, got %u bytes", + expected_len, len); + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM, + MGMT_STATUS_INVALID_PARAMS); + } + + BT_DBG("%s param_count %u", hdev->name, param_count); + + hci_dev_lock(hdev); + + hci_conn_params_clear_disabled(hdev); + + for (i = 0; i < param_count; i++) { + struct mgmt_conn_param *param = &cp->params[i]; + struct hci_conn_params *hci_param; + u16 min, max, latency, timeout; + u8 addr_type; + + BT_DBG("Adding %pMR (type %u)", ¶m->addr.bdaddr, + param->addr.type); + + if (param->addr.type == BDADDR_LE_PUBLIC) { + addr_type = ADDR_LE_DEV_PUBLIC; + } else if (param->addr.type == BDADDR_LE_RANDOM) { + addr_type = ADDR_LE_DEV_RANDOM; + } else { + BT_ERR("Ignoring invalid connection parameters"); + continue; + } + + min = le16_to_cpu(param->min_interval); + max = le16_to_cpu(param->max_interval); + latency = le16_to_cpu(param->latency); + timeout = le16_to_cpu(param->timeout); + + BT_DBG("min 0x%04x max 0x%04x latency 0x%04x timeout 0x%04x", + min, max, latency, timeout); + + if (hci_check_conn_params(min, max, latency, timeout) < 0) { + BT_ERR("Ignoring invalid connection parameters"); + continue; + } + + hci_param = hci_conn_params_add(hdev, ¶m->addr.bdaddr, + addr_type); + if (!hci_param) { + BT_ERR("Failed to add connection parameters"); + continue; + } + + hci_param->conn_min_interval = min; + hci_param->conn_max_interval = max; + hci_param->conn_latency = latency; + hci_param->supervision_timeout = timeout; + } + + hci_dev_unlock(hdev); + + return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_LOAD_CONN_PARAM, 0, + NULL, 0); +} + +static int set_external_config(struct sock *sk, struct hci_dev *hdev, + void *data, u16 len) +{ + struct mgmt_cp_set_external_config *cp = data; + bool changed; + int err; + + BT_DBG("%s", hdev->name); + + if (hdev_is_powered(hdev)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG, + MGMT_STATUS_REJECTED); + + if (cp->config != 0x00 && cp->config != 0x01) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG, + MGMT_STATUS_INVALID_PARAMS); + + if (!test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_EXTERNAL_CONFIG, + MGMT_STATUS_NOT_SUPPORTED); + + hci_dev_lock(hdev); + + if (cp->config) + changed = !hci_dev_test_and_set_flag(hdev, HCI_EXT_CONFIGURED); + else + changed = hci_dev_test_and_clear_flag(hdev, HCI_EXT_CONFIGURED); + + err = send_options_rsp(sk, MGMT_OP_SET_EXTERNAL_CONFIG, hdev); + if (err < 0) + goto unlock; + + if (!changed) + goto unlock; + + err = new_options(hdev, sk); + + if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) == is_configured(hdev)) { + mgmt_index_removed(hdev); + + if (hci_dev_test_and_change_flag(hdev, HCI_UNCONFIGURED)) { + hci_dev_set_flag(hdev, HCI_CONFIG); + hci_dev_set_flag(hdev, HCI_AUTO_OFF); + + queue_work(hdev->req_workqueue, &hdev->power_on); + } else { + set_bit(HCI_RAW, &hdev->flags); + mgmt_index_added(hdev); + } + } + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static int set_public_address(struct sock *sk, struct hci_dev *hdev, + void *data, u16 len) +{ + struct mgmt_cp_set_public_address *cp = data; + bool changed; + int err; + + BT_DBG("%s", hdev->name); + + if (hdev_is_powered(hdev)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS, + MGMT_STATUS_REJECTED); + + if (!bacmp(&cp->bdaddr, BDADDR_ANY)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS, + MGMT_STATUS_INVALID_PARAMS); + + if (!hdev->set_bdaddr) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_PUBLIC_ADDRESS, + MGMT_STATUS_NOT_SUPPORTED); + + hci_dev_lock(hdev); + + changed = !!bacmp(&hdev->public_addr, &cp->bdaddr); + bacpy(&hdev->public_addr, &cp->bdaddr); + + err = send_options_rsp(sk, MGMT_OP_SET_PUBLIC_ADDRESS, hdev); + if (err < 0) + goto unlock; + + if (!changed) + goto unlock; + + if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) + err = new_options(hdev, sk); + + if (is_configured(hdev)) { + mgmt_index_removed(hdev); + + hci_dev_clear_flag(hdev, HCI_UNCONFIGURED); + + hci_dev_set_flag(hdev, HCI_CONFIG); + hci_dev_set_flag(hdev, HCI_AUTO_OFF); + + queue_work(hdev->req_workqueue, &hdev->power_on); + } + +unlock: + hci_dev_unlock(hdev); + return err; +} + +static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data, + u8 data_len) +{ + eir[eir_len++] = sizeof(type) + data_len; + eir[eir_len++] = type; + memcpy(&eir[eir_len], data, data_len); + eir_len += data_len; + + return eir_len; +} + +static void read_local_oob_ext_data_complete(struct hci_dev *hdev, u8 status, + u16 opcode, struct sk_buff *skb) +{ + const struct mgmt_cp_read_local_oob_ext_data *mgmt_cp; + struct mgmt_rp_read_local_oob_ext_data *mgmt_rp; + u8 *h192, *r192, *h256, *r256; + struct mgmt_pending_cmd *cmd; + u16 eir_len; + int err; + + BT_DBG("%s status %u", hdev->name, status); + + cmd = pending_find(MGMT_OP_READ_LOCAL_OOB_EXT_DATA, hdev); + if (!cmd) + return; + + mgmt_cp = cmd->param; + + if (status) { + status = mgmt_status(status); + eir_len = 0; + + h192 = NULL; + r192 = NULL; + h256 = NULL; + r256 = NULL; + } else if (opcode == HCI_OP_READ_LOCAL_OOB_DATA) { + struct hci_rp_read_local_oob_data *rp; + + if (skb->len != sizeof(*rp)) { + status = MGMT_STATUS_FAILED; + eir_len = 0; + } else { + status = MGMT_STATUS_SUCCESS; + rp = (void *)skb->data; + + eir_len = 5 + 18 + 18; + h192 = rp->hash; + r192 = rp->rand; + h256 = NULL; + r256 = NULL; + } + } else { + struct hci_rp_read_local_oob_ext_data *rp; + + if (skb->len != sizeof(*rp)) { + status = MGMT_STATUS_FAILED; + eir_len = 0; + } else { + status = MGMT_STATUS_SUCCESS; + rp = (void *)skb->data; + + if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { + eir_len = 5 + 18 + 18; + h192 = NULL; + r192 = NULL; + } else { + eir_len = 5 + 18 + 18 + 18 + 18; + h192 = rp->hash192; + r192 = rp->rand192; + } + + h256 = rp->hash256; + r256 = rp->rand256; + } + } + + mgmt_rp = kmalloc(sizeof(*mgmt_rp) + eir_len, GFP_KERNEL); + if (!mgmt_rp) + goto done; + + if (status) + goto send_rsp; + + eir_len = eir_append_data(mgmt_rp->eir, 0, EIR_CLASS_OF_DEV, + hdev->dev_class, 3); + + if (h192 && r192) { + eir_len = eir_append_data(mgmt_rp->eir, eir_len, + EIR_SSP_HASH_C192, h192, 16); + eir_len = eir_append_data(mgmt_rp->eir, eir_len, + EIR_SSP_RAND_R192, r192, 16); + } + + if (h256 && r256) { + eir_len = eir_append_data(mgmt_rp->eir, eir_len, + EIR_SSP_HASH_C256, h256, 16); + eir_len = eir_append_data(mgmt_rp->eir, eir_len, + EIR_SSP_RAND_R256, r256, 16); + } + +send_rsp: + mgmt_rp->type = mgmt_cp->type; + mgmt_rp->eir_len = cpu_to_le16(eir_len); + + err = mgmt_cmd_complete(cmd->sk, hdev->id, + MGMT_OP_READ_LOCAL_OOB_EXT_DATA, status, + mgmt_rp, sizeof(*mgmt_rp) + eir_len); + if (err < 0 || status) + goto done; + + hci_sock_set_flag(cmd->sk, HCI_MGMT_OOB_DATA_EVENTS); + + err = mgmt_limited_event(MGMT_EV_LOCAL_OOB_DATA_UPDATED, hdev, + mgmt_rp, sizeof(*mgmt_rp) + eir_len, + HCI_MGMT_OOB_DATA_EVENTS, cmd->sk); +done: + kfree(mgmt_rp); + mgmt_pending_remove(cmd); +} + +static int read_local_ssp_oob_req(struct hci_dev *hdev, struct sock *sk, + struct mgmt_cp_read_local_oob_ext_data *cp) +{ + struct mgmt_pending_cmd *cmd; + struct hci_request req; + int err; + + cmd = mgmt_pending_add(sk, MGMT_OP_READ_LOCAL_OOB_EXT_DATA, hdev, + cp, sizeof(*cp)); + if (!cmd) + return -ENOMEM; + + hci_req_init(&req, hdev); + + if (bredr_sc_enabled(hdev)) + hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_EXT_DATA, 0, NULL); + else + hci_req_add(&req, HCI_OP_READ_LOCAL_OOB_DATA, 0, NULL); + + err = hci_req_run_skb(&req, read_local_oob_ext_data_complete); + if (err < 0) { + mgmt_pending_remove(cmd); + return err; + } + + return 0; +} + +static int read_local_oob_ext_data(struct sock *sk, struct hci_dev *hdev, + void *data, u16 data_len) +{ + struct mgmt_cp_read_local_oob_ext_data *cp = data; + struct mgmt_rp_read_local_oob_ext_data *rp; + size_t rp_len; + u16 eir_len; + u8 status, flags, role, addr[7], hash[16], rand[16]; + int err; + + BT_DBG("%s", hdev->name); + + if (hdev_is_powered(hdev)) { + switch (cp->type) { + case BIT(BDADDR_BREDR): + status = mgmt_bredr_support(hdev); + if (status) + eir_len = 0; + else + eir_len = 5; + break; + case (BIT(BDADDR_LE_PUBLIC) | BIT(BDADDR_LE_RANDOM)): + status = mgmt_le_support(hdev); + if (status) + eir_len = 0; + else + eir_len = 9 + 3 + 18 + 18 + 3; + break; + default: + status = MGMT_STATUS_INVALID_PARAMS; + eir_len = 0; + break; + } + } else { + status = MGMT_STATUS_NOT_POWERED; + eir_len = 0; + } + + rp_len = sizeof(*rp) + eir_len; + rp = kmalloc(rp_len, GFP_ATOMIC); + if (!rp) + return -ENOMEM; + + if (status) + goto complete; + + hci_dev_lock(hdev); + + eir_len = 0; + switch (cp->type) { + case BIT(BDADDR_BREDR): + if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { + err = read_local_ssp_oob_req(hdev, sk, cp); + hci_dev_unlock(hdev); + if (!err) + goto done; + + status = MGMT_STATUS_FAILED; + goto complete; + } else { + eir_len = eir_append_data(rp->eir, eir_len, + EIR_CLASS_OF_DEV, + hdev->dev_class, 3); + } + break; + case (BIT(BDADDR_LE_PUBLIC) | BIT(BDADDR_LE_RANDOM)): + if (hci_dev_test_flag(hdev, HCI_SC_ENABLED) && + smp_generate_oob(hdev, hash, rand) < 0) { + hci_dev_unlock(hdev); + status = MGMT_STATUS_FAILED; + goto complete; + } + + /* This should return the active RPA, but since the RPA + * is only programmed on demand, it is really hard to fill + * this in at the moment. For now disallow retrieving + * local out-of-band data when privacy is in use. + * + * Returning the identity address will not help here since + * pairing happens before the identity resolving key is + * known and thus the connection establishment happens + * based on the RPA and not the identity address. + */ + if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { + hci_dev_unlock(hdev); + status = MGMT_STATUS_REJECTED; + goto complete; + } + + if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) || + !bacmp(&hdev->bdaddr, BDADDR_ANY) || + (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) && + bacmp(&hdev->static_addr, BDADDR_ANY))) { + memcpy(addr, &hdev->static_addr, 6); + addr[6] = 0x01; + } else { + memcpy(addr, &hdev->bdaddr, 6); + addr[6] = 0x00; + } + + eir_len = eir_append_data(rp->eir, eir_len, EIR_LE_BDADDR, + addr, sizeof(addr)); + + if (hci_dev_test_flag(hdev, HCI_ADVERTISING)) + role = 0x02; + else + role = 0x01; + + eir_len = eir_append_data(rp->eir, eir_len, EIR_LE_ROLE, + &role, sizeof(role)); + + if (hci_dev_test_flag(hdev, HCI_SC_ENABLED)) { + eir_len = eir_append_data(rp->eir, eir_len, + EIR_LE_SC_CONFIRM, + hash, sizeof(hash)); + + eir_len = eir_append_data(rp->eir, eir_len, + EIR_LE_SC_RANDOM, + rand, sizeof(rand)); + } + + flags = get_adv_discov_flags(hdev); + + if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) + flags |= LE_AD_NO_BREDR; + + eir_len = eir_append_data(rp->eir, eir_len, EIR_FLAGS, + &flags, sizeof(flags)); + break; + } + + hci_dev_unlock(hdev); + + hci_sock_set_flag(sk, HCI_MGMT_OOB_DATA_EVENTS); + + status = MGMT_STATUS_SUCCESS; + +complete: + rp->type = cp->type; + rp->eir_len = cpu_to_le16(eir_len); + + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_EXT_DATA, + status, rp, sizeof(*rp) + eir_len); + if (err < 0 || status) + goto done; + + err = mgmt_limited_event(MGMT_EV_LOCAL_OOB_DATA_UPDATED, hdev, + rp, sizeof(*rp) + eir_len, + HCI_MGMT_OOB_DATA_EVENTS, sk); + +done: + kfree(rp); + + return err; +} + +static u32 get_supported_adv_flags(struct hci_dev *hdev) +{ + u32 flags = 0; + + flags |= MGMT_ADV_FLAG_CONNECTABLE; + flags |= MGMT_ADV_FLAG_DISCOV; + flags |= MGMT_ADV_FLAG_LIMITED_DISCOV; + flags |= MGMT_ADV_FLAG_MANAGED_FLAGS; + + if (hdev->adv_tx_power != HCI_TX_POWER_INVALID) + flags |= MGMT_ADV_FLAG_TX_POWER; + + return flags; +} + +static int read_adv_features(struct sock *sk, struct hci_dev *hdev, + void *data, u16 data_len) +{ + struct mgmt_rp_read_adv_features *rp; + size_t rp_len; + int err; + bool instance; + u32 supported_flags; + + BT_DBG("%s", hdev->name); + + if (!lmp_le_capable(hdev)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_READ_ADV_FEATURES, + MGMT_STATUS_REJECTED); + + hci_dev_lock(hdev); + + rp_len = sizeof(*rp); + + /* Currently only one instance is supported, so just add 1 to the + * response length. + */ + instance = hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE); + if (instance) + rp_len++; + + rp = kmalloc(rp_len, GFP_ATOMIC); + if (!rp) { + hci_dev_unlock(hdev); + return -ENOMEM; + } + + supported_flags = get_supported_adv_flags(hdev); + + rp->supported_flags = cpu_to_le32(supported_flags); + rp->max_adv_data_len = HCI_MAX_AD_LENGTH; + rp->max_scan_rsp_len = HCI_MAX_AD_LENGTH; + rp->max_instances = 1; + + /* Currently only one instance is supported, so simply return the + * current instance number. + */ + if (instance) { + rp->num_instances = 1; + rp->instance[0] = 1; + } else { + rp->num_instances = 0; + } + + hci_dev_unlock(hdev); + + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_ADV_FEATURES, + MGMT_STATUS_SUCCESS, rp, rp_len); + + kfree(rp); + + return err; +} + +static bool tlv_data_is_valid(struct hci_dev *hdev, u32 adv_flags, u8 *data, + u8 len, bool is_adv_data) +{ + u8 max_len = HCI_MAX_AD_LENGTH; + int i, cur_len; + bool flags_managed = false; + bool tx_power_managed = false; + u32 flags_params = MGMT_ADV_FLAG_DISCOV | MGMT_ADV_FLAG_LIMITED_DISCOV | + MGMT_ADV_FLAG_MANAGED_FLAGS; + + if (is_adv_data && (adv_flags & flags_params)) { + flags_managed = true; + max_len -= 3; + } + + if (is_adv_data && (adv_flags & MGMT_ADV_FLAG_TX_POWER)) { + tx_power_managed = true; + max_len -= 3; + } + + if (len > max_len) + return false; + + /* Make sure that the data is correctly formatted. */ + for (i = 0, cur_len = 0; i < len; i += (cur_len + 1)) { + cur_len = data[i]; + + if (flags_managed && data[i + 1] == EIR_FLAGS) + return false; + + if (tx_power_managed && data[i + 1] == EIR_TX_POWER) + return false; + + /* If the current field length would exceed the total data + * length, then it's invalid. + */ + if (i + cur_len >= len) + return false; + } + + return true; +} + +static void add_advertising_complete(struct hci_dev *hdev, u8 status, + u16 opcode) +{ + struct mgmt_pending_cmd *cmd; + struct mgmt_rp_add_advertising rp; + + BT_DBG("status %d", status); + + hci_dev_lock(hdev); + + cmd = pending_find(MGMT_OP_ADD_ADVERTISING, hdev); + + if (status) { + hci_dev_clear_flag(hdev, HCI_ADVERTISING_INSTANCE); + memset(&hdev->adv_instance, 0, sizeof(hdev->adv_instance)); + advertising_removed(cmd ? cmd->sk : NULL, hdev, 1); + } + + if (!cmd) + goto unlock; + + rp.instance = 0x01; + + if (status) + mgmt_cmd_status(cmd->sk, cmd->index, cmd->opcode, + mgmt_status(status)); + else + mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, + mgmt_status(status), &rp, sizeof(rp)); + + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); +} + +static void adv_timeout_expired(struct work_struct *work) +{ + struct hci_dev *hdev = container_of(work, struct hci_dev, + adv_instance.timeout_exp.work); + + hdev->adv_instance.timeout = 0; + + hci_dev_lock(hdev); + clear_adv_instance(hdev); + hci_dev_unlock(hdev); +} + +static int add_advertising(struct sock *sk, struct hci_dev *hdev, + void *data, u16 data_len) +{ + struct mgmt_cp_add_advertising *cp = data; + struct mgmt_rp_add_advertising rp; + u32 flags; + u32 supported_flags; + u8 status; + u16 timeout; + int err; + struct mgmt_pending_cmd *cmd; + struct hci_request req; + + BT_DBG("%s", hdev->name); + + status = mgmt_le_support(hdev); + if (status) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING, + status); + + flags = __le32_to_cpu(cp->flags); + timeout = __le16_to_cpu(cp->timeout); + + /* The current implementation only supports adding one instance and only + * a subset of the specified flags. + */ + supported_flags = get_supported_adv_flags(hdev); + if (cp->instance != 0x01 || (flags & ~supported_flags)) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING, + MGMT_STATUS_INVALID_PARAMS); + + hci_dev_lock(hdev); + + if (timeout && !hdev_is_powered(hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING, + MGMT_STATUS_REJECTED); + goto unlock; + } + + if (pending_find(MGMT_OP_ADD_ADVERTISING, hdev) || + pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev) || + pending_find(MGMT_OP_SET_LE, hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING, + MGMT_STATUS_BUSY); + goto unlock; + } + + if (!tlv_data_is_valid(hdev, flags, cp->data, cp->adv_data_len, true) || + !tlv_data_is_valid(hdev, flags, cp->data + cp->adv_data_len, + cp->scan_rsp_len, false)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_ADD_ADVERTISING, + MGMT_STATUS_INVALID_PARAMS); + goto unlock; + } + + INIT_DELAYED_WORK(&hdev->adv_instance.timeout_exp, adv_timeout_expired); + + hdev->adv_instance.flags = flags; + hdev->adv_instance.adv_data_len = cp->adv_data_len; + hdev->adv_instance.scan_rsp_len = cp->scan_rsp_len; + + if (cp->adv_data_len) + memcpy(hdev->adv_instance.adv_data, cp->data, cp->adv_data_len); + + if (cp->scan_rsp_len) + memcpy(hdev->adv_instance.scan_rsp_data, + cp->data + cp->adv_data_len, cp->scan_rsp_len); + + if (hdev->adv_instance.timeout) + cancel_delayed_work(&hdev->adv_instance.timeout_exp); + + hdev->adv_instance.timeout = timeout; + + if (timeout) + queue_delayed_work(hdev->workqueue, + &hdev->adv_instance.timeout_exp, + msecs_to_jiffies(timeout * 1000)); + + if (!hci_dev_test_and_set_flag(hdev, HCI_ADVERTISING_INSTANCE)) + advertising_added(sk, hdev, 1); + + /* If the HCI_ADVERTISING flag is set or the device isn't powered then + * we have no HCI communication to make. Simply return. + */ + if (!hdev_is_powered(hdev) || + hci_dev_test_flag(hdev, HCI_ADVERTISING)) { + rp.instance = 0x01; + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_ADD_ADVERTISING, + MGMT_STATUS_SUCCESS, &rp, sizeof(rp)); + goto unlock; + } + + /* We're good to go, update advertising data, parameters, and start + * advertising. + */ + cmd = mgmt_pending_add(sk, MGMT_OP_ADD_ADVERTISING, hdev, data, + data_len); + if (!cmd) { + err = -ENOMEM; + goto unlock; + } + + hci_req_init(&req, hdev); + + update_adv_data(&req); + update_scan_rsp_data(&req); + enable_advertising(&req); + + err = hci_req_run(&req, add_advertising_complete); + if (err < 0) + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); + + return err; +} + +static void remove_advertising_complete(struct hci_dev *hdev, u8 status, + u16 opcode) +{ + struct mgmt_pending_cmd *cmd; + struct mgmt_rp_remove_advertising rp; + + BT_DBG("status %d", status); + + hci_dev_lock(hdev); + + /* A failure status here only means that we failed to disable + * advertising. Otherwise, the advertising instance has been removed, + * so report success. + */ + cmd = pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev); + if (!cmd) + goto unlock; + + rp.instance = 1; + + mgmt_cmd_complete(cmd->sk, cmd->index, cmd->opcode, MGMT_STATUS_SUCCESS, + &rp, sizeof(rp)); + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); +} + +static int remove_advertising(struct sock *sk, struct hci_dev *hdev, + void *data, u16 data_len) +{ + struct mgmt_cp_remove_advertising *cp = data; + struct mgmt_rp_remove_advertising rp; + int err; + struct mgmt_pending_cmd *cmd; + struct hci_request req; + + BT_DBG("%s", hdev->name); + + /* The current implementation only allows modifying instance no 1. A + * value of 0 indicates that all instances should be cleared. + */ + if (cp->instance > 1) + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_ADVERTISING, + MGMT_STATUS_INVALID_PARAMS); + + hci_dev_lock(hdev); + + if (pending_find(MGMT_OP_ADD_ADVERTISING, hdev) || + pending_find(MGMT_OP_REMOVE_ADVERTISING, hdev) || + pending_find(MGMT_OP_SET_LE, hdev)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_ADVERTISING, + MGMT_STATUS_BUSY); + goto unlock; + } + + if (!hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE)) { + err = mgmt_cmd_status(sk, hdev->id, MGMT_OP_REMOVE_ADVERTISING, + MGMT_STATUS_INVALID_PARAMS); + goto unlock; + } + + if (hdev->adv_instance.timeout) + cancel_delayed_work(&hdev->adv_instance.timeout_exp); + + memset(&hdev->adv_instance, 0, sizeof(hdev->adv_instance)); + + advertising_removed(sk, hdev, 1); + + hci_dev_clear_flag(hdev, HCI_ADVERTISING_INSTANCE); + + /* If the HCI_ADVERTISING flag is set or the device isn't powered then + * we have no HCI communication to make. Simply return. + */ + if (!hdev_is_powered(hdev) || + hci_dev_test_flag(hdev, HCI_ADVERTISING)) { + rp.instance = 1; + err = mgmt_cmd_complete(sk, hdev->id, + MGMT_OP_REMOVE_ADVERTISING, + MGMT_STATUS_SUCCESS, &rp, sizeof(rp)); + goto unlock; + } + + cmd = mgmt_pending_add(sk, MGMT_OP_REMOVE_ADVERTISING, hdev, data, + data_len); + if (!cmd) { + err = -ENOMEM; + goto unlock; + } + + hci_req_init(&req, hdev); + disable_advertising(&req); + + err = hci_req_run(&req, remove_advertising_complete); + if (err < 0) + mgmt_pending_remove(cmd); + +unlock: + hci_dev_unlock(hdev); + + return err; +} + +static const struct hci_mgmt_handler mgmt_handlers[] = { + { NULL }, /* 0x0000 (no command) */ + { read_version, MGMT_READ_VERSION_SIZE, + HCI_MGMT_NO_HDEV | + HCI_MGMT_UNTRUSTED }, + { read_commands, MGMT_READ_COMMANDS_SIZE, + HCI_MGMT_NO_HDEV | + HCI_MGMT_UNTRUSTED }, + { read_index_list, MGMT_READ_INDEX_LIST_SIZE, + HCI_MGMT_NO_HDEV | + HCI_MGMT_UNTRUSTED }, + { read_controller_info, MGMT_READ_INFO_SIZE, + HCI_MGMT_UNTRUSTED }, + { set_powered, MGMT_SETTING_SIZE }, + { set_discoverable, MGMT_SET_DISCOVERABLE_SIZE }, + { set_connectable, MGMT_SETTING_SIZE }, + { set_fast_connectable, MGMT_SETTING_SIZE }, + { set_bondable, MGMT_SETTING_SIZE }, + { set_link_security, MGMT_SETTING_SIZE }, + { set_ssp, MGMT_SETTING_SIZE }, + { set_hs, MGMT_SETTING_SIZE }, + { set_le, MGMT_SETTING_SIZE }, + { set_dev_class, MGMT_SET_DEV_CLASS_SIZE }, + { set_local_name, MGMT_SET_LOCAL_NAME_SIZE }, + { add_uuid, MGMT_ADD_UUID_SIZE }, + { remove_uuid, MGMT_REMOVE_UUID_SIZE }, + { load_link_keys, MGMT_LOAD_LINK_KEYS_SIZE, + HCI_MGMT_VAR_LEN }, + { load_long_term_keys, MGMT_LOAD_LONG_TERM_KEYS_SIZE, + HCI_MGMT_VAR_LEN }, + { disconnect, MGMT_DISCONNECT_SIZE }, + { get_connections, MGMT_GET_CONNECTIONS_SIZE }, + { pin_code_reply, MGMT_PIN_CODE_REPLY_SIZE }, + { pin_code_neg_reply, MGMT_PIN_CODE_NEG_REPLY_SIZE }, + { set_io_capability, MGMT_SET_IO_CAPABILITY_SIZE }, + { pair_device, MGMT_PAIR_DEVICE_SIZE }, + { cancel_pair_device, MGMT_CANCEL_PAIR_DEVICE_SIZE }, + { unpair_device, MGMT_UNPAIR_DEVICE_SIZE }, + { user_confirm_reply, MGMT_USER_CONFIRM_REPLY_SIZE }, + { user_confirm_neg_reply, MGMT_USER_CONFIRM_NEG_REPLY_SIZE }, + { user_passkey_reply, MGMT_USER_PASSKEY_REPLY_SIZE }, + { user_passkey_neg_reply, MGMT_USER_PASSKEY_NEG_REPLY_SIZE }, + { read_local_oob_data, MGMT_READ_LOCAL_OOB_DATA_SIZE }, + { add_remote_oob_data, MGMT_ADD_REMOTE_OOB_DATA_SIZE, + HCI_MGMT_VAR_LEN }, + { remove_remote_oob_data, MGMT_REMOVE_REMOTE_OOB_DATA_SIZE }, + { start_discovery, MGMT_START_DISCOVERY_SIZE }, + { stop_discovery, MGMT_STOP_DISCOVERY_SIZE }, + { confirm_name, MGMT_CONFIRM_NAME_SIZE }, + { block_device, MGMT_BLOCK_DEVICE_SIZE }, + { unblock_device, MGMT_UNBLOCK_DEVICE_SIZE }, + { set_device_id, MGMT_SET_DEVICE_ID_SIZE }, + { set_advertising, MGMT_SETTING_SIZE }, + { set_bredr, MGMT_SETTING_SIZE }, + { set_static_address, MGMT_SET_STATIC_ADDRESS_SIZE }, + { set_scan_params, MGMT_SET_SCAN_PARAMS_SIZE }, + { set_secure_conn, MGMT_SETTING_SIZE }, + { set_debug_keys, MGMT_SETTING_SIZE }, + { set_privacy, MGMT_SET_PRIVACY_SIZE }, + { load_irks, MGMT_LOAD_IRKS_SIZE, + HCI_MGMT_VAR_LEN }, + { get_conn_info, MGMT_GET_CONN_INFO_SIZE }, + { get_clock_info, MGMT_GET_CLOCK_INFO_SIZE }, + { add_device, MGMT_ADD_DEVICE_SIZE }, + { remove_device, MGMT_REMOVE_DEVICE_SIZE }, + { load_conn_param, MGMT_LOAD_CONN_PARAM_SIZE, + HCI_MGMT_VAR_LEN }, + { read_unconf_index_list, MGMT_READ_UNCONF_INDEX_LIST_SIZE, + HCI_MGMT_NO_HDEV | + HCI_MGMT_UNTRUSTED }, + { read_config_info, MGMT_READ_CONFIG_INFO_SIZE, + HCI_MGMT_UNCONFIGURED | + HCI_MGMT_UNTRUSTED }, + { set_external_config, MGMT_SET_EXTERNAL_CONFIG_SIZE, + HCI_MGMT_UNCONFIGURED }, + { set_public_address, MGMT_SET_PUBLIC_ADDRESS_SIZE, + HCI_MGMT_UNCONFIGURED }, + { start_service_discovery, MGMT_START_SERVICE_DISCOVERY_SIZE, + HCI_MGMT_VAR_LEN }, + { read_local_oob_ext_data, MGMT_READ_LOCAL_OOB_EXT_DATA_SIZE }, + { read_ext_index_list, MGMT_READ_EXT_INDEX_LIST_SIZE, + HCI_MGMT_NO_HDEV | + HCI_MGMT_UNTRUSTED }, + { read_adv_features, MGMT_READ_ADV_FEATURES_SIZE }, + { add_advertising, MGMT_ADD_ADVERTISING_SIZE, + HCI_MGMT_VAR_LEN }, + { remove_advertising, MGMT_REMOVE_ADVERTISING_SIZE }, +}; + +void mgmt_index_added(struct hci_dev *hdev) +{ + struct mgmt_ev_ext_index ev; + + if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) + return; + + switch (hdev->dev_type) { + case HCI_BREDR: + if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { + mgmt_index_event(MGMT_EV_UNCONF_INDEX_ADDED, hdev, + NULL, 0, HCI_MGMT_UNCONF_INDEX_EVENTS); + ev.type = 0x01; + } else { + mgmt_index_event(MGMT_EV_INDEX_ADDED, hdev, NULL, 0, + HCI_MGMT_INDEX_EVENTS); + ev.type = 0x00; + } + break; + case HCI_AMP: + ev.type = 0x02; + break; + default: + return; + } + + ev.bus = hdev->bus; + + mgmt_index_event(MGMT_EV_EXT_INDEX_ADDED, hdev, &ev, sizeof(ev), + HCI_MGMT_EXT_INDEX_EVENTS); +} + +void mgmt_index_removed(struct hci_dev *hdev) +{ + struct mgmt_ev_ext_index ev; + u8 status = MGMT_STATUS_INVALID_INDEX; + + if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) + return; + + switch (hdev->dev_type) { + case HCI_BREDR: + mgmt_pending_foreach(0, hdev, cmd_complete_rsp, &status); + + if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) { + mgmt_index_event(MGMT_EV_UNCONF_INDEX_REMOVED, hdev, + NULL, 0, HCI_MGMT_UNCONF_INDEX_EVENTS); + ev.type = 0x01; + } else { + mgmt_index_event(MGMT_EV_INDEX_REMOVED, hdev, NULL, 0, + HCI_MGMT_INDEX_EVENTS); + ev.type = 0x00; + } + break; + case HCI_AMP: + ev.type = 0x02; + break; + default: + return; + } + + ev.bus = hdev->bus; + + mgmt_index_event(MGMT_EV_EXT_INDEX_REMOVED, hdev, &ev, sizeof(ev), + HCI_MGMT_EXT_INDEX_EVENTS); +} + +/* This function requires the caller holds hdev->lock */ +static void restart_le_actions(struct hci_request *req) +{ + struct hci_dev *hdev = req->hdev; + struct hci_conn_params *p; + + list_for_each_entry(p, &hdev->le_conn_params, list) { + /* Needed for AUTO_OFF case where might not "really" + * have been powered off. + */ + list_del_init(&p->action); + + switch (p->auto_connect) { + case HCI_AUTO_CONN_DIRECT: + case HCI_AUTO_CONN_ALWAYS: + list_add(&p->action, &hdev->pend_le_conns); + break; + case HCI_AUTO_CONN_REPORT: + list_add(&p->action, &hdev->pend_le_reports); + break; + default: + break; + } + } + + __hci_update_background_scan(req); +} + +static void powered_complete(struct hci_dev *hdev, u8 status, u16 opcode) +{ + struct cmd_lookup match = { NULL, hdev }; + + BT_DBG("status 0x%02x", status); + + if (!status) { + /* Register the available SMP channels (BR/EDR and LE) only + * when successfully powering on the controller. This late + * registration is required so that LE SMP can clearly + * decide if the public address or static address is used. + */ + smp_register(hdev); + } + + hci_dev_lock(hdev); + + mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match); + + new_settings(hdev, match.sk); + + hci_dev_unlock(hdev); + + if (match.sk) + sock_put(match.sk); +} + +static int powered_update_hci(struct hci_dev *hdev) +{ + struct hci_request req; + u8 link_sec; + + hci_req_init(&req, hdev); + + if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && + !lmp_host_ssp_capable(hdev)) { + u8 mode = 0x01; + + hci_req_add(&req, HCI_OP_WRITE_SSP_MODE, sizeof(mode), &mode); + + if (bredr_sc_enabled(hdev) && !lmp_host_sc_capable(hdev)) { + u8 support = 0x01; + + hci_req_add(&req, HCI_OP_WRITE_SC_SUPPORT, + sizeof(support), &support); + } + } + + if (hci_dev_test_flag(hdev, HCI_LE_ENABLED) && + lmp_bredr_capable(hdev)) { + struct hci_cp_write_le_host_supported cp; + + cp.le = 0x01; + cp.simul = 0x00; + + /* Check first if we already have the right + * host state (host features set) + */ + if (cp.le != lmp_host_le_capable(hdev) || + cp.simul != lmp_host_le_br_capable(hdev)) + hci_req_add(&req, HCI_OP_WRITE_LE_HOST_SUPPORTED, + sizeof(cp), &cp); + } + + if (lmp_le_capable(hdev)) { + /* Make sure the controller has a good default for + * advertising data. This also applies to the case + * where BR/EDR was toggled during the AUTO_OFF phase. + */ + if (hci_dev_test_flag(hdev, HCI_LE_ENABLED)) { + update_adv_data(&req); + update_scan_rsp_data(&req); + } + + if (hci_dev_test_flag(hdev, HCI_ADVERTISING) || + hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE)) + enable_advertising(&req); + + restart_le_actions(&req); + } + + link_sec = hci_dev_test_flag(hdev, HCI_LINK_SECURITY); + if (link_sec != test_bit(HCI_AUTH, &hdev->flags)) + hci_req_add(&req, HCI_OP_WRITE_AUTH_ENABLE, + sizeof(link_sec), &link_sec); + + if (lmp_bredr_capable(hdev)) { + if (hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE)) + write_fast_connectable(&req, true); + else + write_fast_connectable(&req, false); + __hci_update_page_scan(&req); + update_class(&req); + update_name(&req); + update_eir(&req); + } + + return hci_req_run(&req, powered_complete); +} + +int mgmt_powered(struct hci_dev *hdev, u8 powered) +{ + struct cmd_lookup match = { NULL, hdev }; + u8 status, zero_cod[] = { 0, 0, 0 }; + int err; + + if (!hci_dev_test_flag(hdev, HCI_MGMT)) + return 0; + + if (powered) { + if (powered_update_hci(hdev) == 0) + return 0; + + mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, + &match); + goto new_settings; + } + + mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match); + + /* If the power off is because of hdev unregistration let + * use the appropriate INVALID_INDEX status. Otherwise use + * NOT_POWERED. We cover both scenarios here since later in + * mgmt_index_removed() any hci_conn callbacks will have already + * been triggered, potentially causing misleading DISCONNECTED + * status responses. + */ + if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) + status = MGMT_STATUS_INVALID_INDEX; + else + status = MGMT_STATUS_NOT_POWERED; + + mgmt_pending_foreach(0, hdev, cmd_complete_rsp, &status); + + if (memcmp(hdev->dev_class, zero_cod, sizeof(zero_cod)) != 0) + mgmt_generic_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev, + zero_cod, sizeof(zero_cod), NULL); + +new_settings: + err = new_settings(hdev, match.sk); + + if (match.sk) + sock_put(match.sk); + + return err; +} + +void mgmt_set_powered_failed(struct hci_dev *hdev, int err) +{ + struct mgmt_pending_cmd *cmd; + u8 status; + + cmd = pending_find(MGMT_OP_SET_POWERED, hdev); + if (!cmd) + return; + + if (err == -ERFKILL) + status = MGMT_STATUS_RFKILLED; + else + status = MGMT_STATUS_FAILED; + + mgmt_cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_POWERED, status); + + mgmt_pending_remove(cmd); +} + +void mgmt_discoverable_timeout(struct hci_dev *hdev) +{ + struct hci_request req; + + hci_dev_lock(hdev); + + /* When discoverable timeout triggers, then just make sure + * the limited discoverable flag is cleared. Even in the case + * of a timeout triggered from general discoverable, it is + * safe to unconditionally clear the flag. + */ + hci_dev_clear_flag(hdev, HCI_LIMITED_DISCOVERABLE); + hci_dev_clear_flag(hdev, HCI_DISCOVERABLE); + + hci_req_init(&req, hdev); + if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED)) { + u8 scan = SCAN_PAGE; + hci_req_add(&req, HCI_OP_WRITE_SCAN_ENABLE, + sizeof(scan), &scan); + } + update_class(&req); + + /* Advertising instances don't use the global discoverable setting, so + * only update AD if advertising was enabled using Set Advertising. + */ + if (hci_dev_test_flag(hdev, HCI_ADVERTISING)) + update_adv_data(&req); + + hci_req_run(&req, NULL); + + hdev->discov_timeout = 0; + + new_settings(hdev, NULL); + + hci_dev_unlock(hdev); +} + +void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, + bool persistent) +{ + struct mgmt_ev_new_link_key ev; + + memset(&ev, 0, sizeof(ev)); + + ev.store_hint = persistent; + bacpy(&ev.key.addr.bdaddr, &key->bdaddr); + ev.key.addr.type = BDADDR_BREDR; + ev.key.type = key->type; + memcpy(ev.key.val, key->val, HCI_LINK_KEY_SIZE); + ev.key.pin_len = key->pin_len; + + mgmt_event(MGMT_EV_NEW_LINK_KEY, hdev, &ev, sizeof(ev), NULL); +} + +static u8 mgmt_ltk_type(struct smp_ltk *ltk) +{ + switch (ltk->type) { + case SMP_LTK: + case SMP_LTK_SLAVE: + if (ltk->authenticated) + return MGMT_LTK_AUTHENTICATED; + return MGMT_LTK_UNAUTHENTICATED; + case SMP_LTK_P256: + if (ltk->authenticated) + return MGMT_LTK_P256_AUTH; + return MGMT_LTK_P256_UNAUTH; + case SMP_LTK_P256_DEBUG: + return MGMT_LTK_P256_DEBUG; + } + + return MGMT_LTK_UNAUTHENTICATED; +} + +void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent) +{ + struct mgmt_ev_new_long_term_key ev; + + memset(&ev, 0, sizeof(ev)); + + /* Devices using resolvable or non-resolvable random addresses + * without providing an indentity resolving key don't require + * to store long term keys. Their addresses will change the + * next time around. + * + * Only when a remote device provides an identity address + * make sure the long term key is stored. If the remote + * identity is known, the long term keys are internally + * mapped to the identity address. So allow static random + * and public addresses here. + */ + if (key->bdaddr_type == ADDR_LE_DEV_RANDOM && + (key->bdaddr.b[5] & 0xc0) != 0xc0) + ev.store_hint = 0x00; + else + ev.store_hint = persistent; + + bacpy(&ev.key.addr.bdaddr, &key->bdaddr); + ev.key.addr.type = link_to_bdaddr(LE_LINK, key->bdaddr_type); + ev.key.type = mgmt_ltk_type(key); + ev.key.enc_size = key->enc_size; + ev.key.ediv = key->ediv; + ev.key.rand = key->rand; + + if (key->type == SMP_LTK) + ev.key.master = 1; + + memcpy(ev.key.val, key->val, sizeof(key->val)); + + mgmt_event(MGMT_EV_NEW_LONG_TERM_KEY, hdev, &ev, sizeof(ev), NULL); +} + +void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk) +{ + struct mgmt_ev_new_irk ev; + + memset(&ev, 0, sizeof(ev)); + + /* For identity resolving keys from devices that are already + * using a public address or static random address, do not + * ask for storing this key. The identity resolving key really + * is only mandatory for devices using resovlable random + * addresses. + * + * Storing all identity resolving keys has the downside that + * they will be also loaded on next boot of they system. More + * identity resolving keys, means more time during scanning is + * needed to actually resolve these addresses. + */ + if (bacmp(&irk->rpa, BDADDR_ANY)) + ev.store_hint = 0x01; + else + ev.store_hint = 0x00; + + bacpy(&ev.rpa, &irk->rpa); + bacpy(&ev.irk.addr.bdaddr, &irk->bdaddr); + ev.irk.addr.type = link_to_bdaddr(LE_LINK, irk->addr_type); + memcpy(ev.irk.val, irk->val, sizeof(irk->val)); + + mgmt_event(MGMT_EV_NEW_IRK, hdev, &ev, sizeof(ev), NULL); +} + +void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, + bool persistent) +{ + struct mgmt_ev_new_csrk ev; + + memset(&ev, 0, sizeof(ev)); + + /* Devices using resolvable or non-resolvable random addresses + * without providing an indentity resolving key don't require + * to store signature resolving keys. Their addresses will change + * the next time around. + * + * Only when a remote device provides an identity address + * make sure the signature resolving key is stored. So allow + * static random and public addresses here. + */ + if (csrk->bdaddr_type == ADDR_LE_DEV_RANDOM && + (csrk->bdaddr.b[5] & 0xc0) != 0xc0) + ev.store_hint = 0x00; + else + ev.store_hint = persistent; + + bacpy(&ev.key.addr.bdaddr, &csrk->bdaddr); + ev.key.addr.type = link_to_bdaddr(LE_LINK, csrk->bdaddr_type); + ev.key.type = csrk->type; + memcpy(ev.key.val, csrk->val, sizeof(csrk->val)); + + mgmt_event(MGMT_EV_NEW_CSRK, hdev, &ev, sizeof(ev), NULL); +} + +void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, + u8 bdaddr_type, u8 store_hint, u16 min_interval, + u16 max_interval, u16 latency, u16 timeout) +{ + struct mgmt_ev_new_conn_param ev; + + if (!hci_is_identity_address(bdaddr, bdaddr_type)) + return; + + memset(&ev, 0, sizeof(ev)); + bacpy(&ev.addr.bdaddr, bdaddr); + ev.addr.type = link_to_bdaddr(LE_LINK, bdaddr_type); + ev.store_hint = store_hint; + ev.min_interval = cpu_to_le16(min_interval); + ev.max_interval = cpu_to_le16(max_interval); + ev.latency = cpu_to_le16(latency); + ev.timeout = cpu_to_le16(timeout); + + mgmt_event(MGMT_EV_NEW_CONN_PARAM, hdev, &ev, sizeof(ev), NULL); +} + +void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, + u32 flags, u8 *name, u8 name_len) +{ + char buf[512]; + struct mgmt_ev_device_connected *ev = (void *) buf; + u16 eir_len = 0; + + bacpy(&ev->addr.bdaddr, &conn->dst); + ev->addr.type = link_to_bdaddr(conn->type, conn->dst_type); + + ev->flags = __cpu_to_le32(flags); + + /* We must ensure that the EIR Data fields are ordered and + * unique. Keep it simple for now and avoid the problem by not + * adding any BR/EDR data to the LE adv. + */ + if (conn->le_adv_data_len > 0) { + memcpy(&ev->eir[eir_len], + conn->le_adv_data, conn->le_adv_data_len); + eir_len = conn->le_adv_data_len; + } else { + if (name_len > 0) + eir_len = eir_append_data(ev->eir, 0, EIR_NAME_COMPLETE, + name, name_len); + + if (memcmp(conn->dev_class, "\0\0\0", 3) != 0) + eir_len = eir_append_data(ev->eir, eir_len, + EIR_CLASS_OF_DEV, + conn->dev_class, 3); + } + + ev->eir_len = cpu_to_le16(eir_len); + + mgmt_event(MGMT_EV_DEVICE_CONNECTED, hdev, buf, + sizeof(*ev) + eir_len, NULL); +} + +static void disconnect_rsp(struct mgmt_pending_cmd *cmd, void *data) +{ + struct sock **sk = data; + + cmd->cmd_complete(cmd, 0); + + *sk = cmd->sk; + sock_hold(*sk); + + mgmt_pending_remove(cmd); +} + +static void unpair_device_rsp(struct mgmt_pending_cmd *cmd, void *data) +{ + struct hci_dev *hdev = data; + struct mgmt_cp_unpair_device *cp = cmd->param; + + device_unpaired(hdev, &cp->addr.bdaddr, cp->addr.type, cmd->sk); + + cmd->cmd_complete(cmd, 0); + mgmt_pending_remove(cmd); +} + +bool mgmt_powering_down(struct hci_dev *hdev) +{ + struct mgmt_pending_cmd *cmd; + struct mgmt_mode *cp; + + cmd = pending_find(MGMT_OP_SET_POWERED, hdev); + if (!cmd) + return false; + + cp = cmd->param; + if (!cp->val) + return true; + + return false; +} + +void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, + u8 link_type, u8 addr_type, u8 reason, + bool mgmt_connected) +{ + struct mgmt_ev_device_disconnected ev; + struct sock *sk = NULL; + + /* The connection is still in hci_conn_hash so test for 1 + * instead of 0 to know if this is the last one. + */ + if (mgmt_powering_down(hdev) && hci_conn_count(hdev) == 1) { + cancel_delayed_work(&hdev->power_off); + queue_work(hdev->req_workqueue, &hdev->power_off.work); + } + + if (!mgmt_connected) + return; + + if (link_type != ACL_LINK && link_type != LE_LINK) + return; + + mgmt_pending_foreach(MGMT_OP_DISCONNECT, hdev, disconnect_rsp, &sk); + + bacpy(&ev.addr.bdaddr, bdaddr); + ev.addr.type = link_to_bdaddr(link_type, addr_type); + ev.reason = reason; + + mgmt_event(MGMT_EV_DEVICE_DISCONNECTED, hdev, &ev, sizeof(ev), sk); + + if (sk) + sock_put(sk); + + mgmt_pending_foreach(MGMT_OP_UNPAIR_DEVICE, hdev, unpair_device_rsp, + hdev); +} + +void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, + u8 link_type, u8 addr_type, u8 status) +{ + u8 bdaddr_type = link_to_bdaddr(link_type, addr_type); + struct mgmt_cp_disconnect *cp; + struct mgmt_pending_cmd *cmd; + + mgmt_pending_foreach(MGMT_OP_UNPAIR_DEVICE, hdev, unpair_device_rsp, + hdev); + + cmd = pending_find(MGMT_OP_DISCONNECT, hdev); + if (!cmd) + return; + + cp = cmd->param; + + if (bacmp(bdaddr, &cp->addr.bdaddr)) + return; + + if (cp->addr.type != bdaddr_type) + return; + + cmd->cmd_complete(cmd, mgmt_status(status)); + mgmt_pending_remove(cmd); +} + +void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, + u8 addr_type, u8 status) +{ + struct mgmt_ev_connect_failed ev; + + /* The connection is still in hci_conn_hash so test for 1 + * instead of 0 to know if this is the last one. + */ + if (mgmt_powering_down(hdev) && hci_conn_count(hdev) == 1) { + cancel_delayed_work(&hdev->power_off); + queue_work(hdev->req_workqueue, &hdev->power_off.work); + } + + bacpy(&ev.addr.bdaddr, bdaddr); + ev.addr.type = link_to_bdaddr(link_type, addr_type); + ev.status = mgmt_status(status); + + mgmt_event(MGMT_EV_CONNECT_FAILED, hdev, &ev, sizeof(ev), NULL); +} + +void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure) +{ + struct mgmt_ev_pin_code_request ev; + + bacpy(&ev.addr.bdaddr, bdaddr); + ev.addr.type = BDADDR_BREDR; + ev.secure = secure; + + mgmt_event(MGMT_EV_PIN_CODE_REQUEST, hdev, &ev, sizeof(ev), NULL); +} + +void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, + u8 status) +{ + struct mgmt_pending_cmd *cmd; + + cmd = pending_find(MGMT_OP_PIN_CODE_REPLY, hdev); + if (!cmd) + return; + + cmd->cmd_complete(cmd, mgmt_status(status)); + mgmt_pending_remove(cmd); +} + +void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, + u8 status) +{ + struct mgmt_pending_cmd *cmd; + + cmd = pending_find(MGMT_OP_PIN_CODE_NEG_REPLY, hdev); + if (!cmd) + return; + + cmd->cmd_complete(cmd, mgmt_status(status)); + mgmt_pending_remove(cmd); +} + +int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, + u8 link_type, u8 addr_type, u32 value, + u8 confirm_hint) +{ + struct mgmt_ev_user_confirm_request ev; + + BT_DBG("%s", hdev->name); + + bacpy(&ev.addr.bdaddr, bdaddr); + ev.addr.type = link_to_bdaddr(link_type, addr_type); + ev.confirm_hint = confirm_hint; + ev.value = cpu_to_le32(value); + + return mgmt_event(MGMT_EV_USER_CONFIRM_REQUEST, hdev, &ev, sizeof(ev), + NULL); +} + +int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, + u8 link_type, u8 addr_type) +{ + struct mgmt_ev_user_passkey_request ev; + + BT_DBG("%s", hdev->name); + + bacpy(&ev.addr.bdaddr, bdaddr); + ev.addr.type = link_to_bdaddr(link_type, addr_type); + + return mgmt_event(MGMT_EV_USER_PASSKEY_REQUEST, hdev, &ev, sizeof(ev), + NULL); +} + +static int user_pairing_resp_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, + u8 link_type, u8 addr_type, u8 status, + u8 opcode) +{ + struct mgmt_pending_cmd *cmd; + + cmd = pending_find(opcode, hdev); + if (!cmd) + return -ENOENT; + + cmd->cmd_complete(cmd, mgmt_status(status)); + mgmt_pending_remove(cmd); + + return 0; +} + +int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, + u8 link_type, u8 addr_type, u8 status) +{ + return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type, + status, MGMT_OP_USER_CONFIRM_REPLY); +} + +int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, + u8 link_type, u8 addr_type, u8 status) +{ + return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type, + status, + MGMT_OP_USER_CONFIRM_NEG_REPLY); +} + +int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, + u8 link_type, u8 addr_type, u8 status) +{ + return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type, + status, MGMT_OP_USER_PASSKEY_REPLY); +} + +int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, + u8 link_type, u8 addr_type, u8 status) +{ + return user_pairing_resp_complete(hdev, bdaddr, link_type, addr_type, + status, + MGMT_OP_USER_PASSKEY_NEG_REPLY); +} + +int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, + u8 link_type, u8 addr_type, u32 passkey, + u8 entered) +{ + struct mgmt_ev_passkey_notify ev; + + BT_DBG("%s", hdev->name); + + bacpy(&ev.addr.bdaddr, bdaddr); + ev.addr.type = link_to_bdaddr(link_type, addr_type); + ev.passkey = __cpu_to_le32(passkey); + ev.entered = entered; + + return mgmt_event(MGMT_EV_PASSKEY_NOTIFY, hdev, &ev, sizeof(ev), NULL); +} + +void mgmt_auth_failed(struct hci_conn *conn, u8 hci_status) +{ + struct mgmt_ev_auth_failed ev; + struct mgmt_pending_cmd *cmd; + u8 status = mgmt_status(hci_status); + + bacpy(&ev.addr.bdaddr, &conn->dst); + ev.addr.type = link_to_bdaddr(conn->type, conn->dst_type); + ev.status = status; + + cmd = find_pairing(conn); + + mgmt_event(MGMT_EV_AUTH_FAILED, conn->hdev, &ev, sizeof(ev), + cmd ? cmd->sk : NULL); + + if (cmd) { + cmd->cmd_complete(cmd, status); + mgmt_pending_remove(cmd); + } +} + +void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status) +{ + struct cmd_lookup match = { NULL, hdev }; + bool changed; + + if (status) { + u8 mgmt_err = mgmt_status(status); + mgmt_pending_foreach(MGMT_OP_SET_LINK_SECURITY, hdev, + cmd_status_rsp, &mgmt_err); + return; + } + + if (test_bit(HCI_AUTH, &hdev->flags)) + changed = !hci_dev_test_and_set_flag(hdev, HCI_LINK_SECURITY); + else + changed = hci_dev_test_and_clear_flag(hdev, HCI_LINK_SECURITY); + + mgmt_pending_foreach(MGMT_OP_SET_LINK_SECURITY, hdev, settings_rsp, + &match); + + if (changed) + new_settings(hdev, match.sk); + + if (match.sk) + sock_put(match.sk); +} + +static void clear_eir(struct hci_request *req) +{ + struct hci_dev *hdev = req->hdev; + struct hci_cp_write_eir cp; + + if (!lmp_ext_inq_capable(hdev)) + return; + + memset(hdev->eir, 0, sizeof(hdev->eir)); + + memset(&cp, 0, sizeof(cp)); + + hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); +} + +void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status) +{ + struct cmd_lookup match = { NULL, hdev }; + struct hci_request req; + bool changed = false; + + if (status) { + u8 mgmt_err = mgmt_status(status); + + if (enable && hci_dev_test_and_clear_flag(hdev, + HCI_SSP_ENABLED)) { + hci_dev_clear_flag(hdev, HCI_HS_ENABLED); + new_settings(hdev, NULL); + } + + mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, cmd_status_rsp, + &mgmt_err); + return; + } + + if (enable) { + changed = !hci_dev_test_and_set_flag(hdev, HCI_SSP_ENABLED); + } else { + changed = hci_dev_test_and_clear_flag(hdev, HCI_SSP_ENABLED); + if (!changed) + changed = hci_dev_test_and_clear_flag(hdev, + HCI_HS_ENABLED); + else + hci_dev_clear_flag(hdev, HCI_HS_ENABLED); + } + + mgmt_pending_foreach(MGMT_OP_SET_SSP, hdev, settings_rsp, &match); + + if (changed) + new_settings(hdev, match.sk); + + if (match.sk) + sock_put(match.sk); + + hci_req_init(&req, hdev); + + if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) { + if (hci_dev_test_flag(hdev, HCI_USE_DEBUG_KEYS)) + hci_req_add(&req, HCI_OP_WRITE_SSP_DEBUG_MODE, + sizeof(enable), &enable); + update_eir(&req); + } else { + clear_eir(&req); + } + + hci_req_run(&req, NULL); +} + +static void sk_lookup(struct mgmt_pending_cmd *cmd, void *data) +{ + struct cmd_lookup *match = data; + + if (match->sk == NULL) { + match->sk = cmd->sk; + sock_hold(match->sk); + } +} + +void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, + u8 status) +{ + struct cmd_lookup match = { NULL, hdev, mgmt_status(status) }; + + mgmt_pending_foreach(MGMT_OP_SET_DEV_CLASS, hdev, sk_lookup, &match); + mgmt_pending_foreach(MGMT_OP_ADD_UUID, hdev, sk_lookup, &match); + mgmt_pending_foreach(MGMT_OP_REMOVE_UUID, hdev, sk_lookup, &match); + + if (!status) + mgmt_generic_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev, + dev_class, 3, NULL); + + if (match.sk) + sock_put(match.sk); +} + +void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status) +{ + struct mgmt_cp_set_local_name ev; + struct mgmt_pending_cmd *cmd; + + if (status) + return; + + memset(&ev, 0, sizeof(ev)); + memcpy(ev.name, name, HCI_MAX_NAME_LENGTH); + memcpy(ev.short_name, hdev->short_name, HCI_MAX_SHORT_NAME_LENGTH); + + cmd = pending_find(MGMT_OP_SET_LOCAL_NAME, hdev); + if (!cmd) { + memcpy(hdev->dev_name, name, sizeof(hdev->dev_name)); + + /* If this is a HCI command related to powering on the + * HCI dev don't send any mgmt signals. + */ + if (pending_find(MGMT_OP_SET_POWERED, hdev)) + return; + } + + mgmt_generic_event(MGMT_EV_LOCAL_NAME_CHANGED, hdev, &ev, sizeof(ev), + cmd ? cmd->sk : NULL); +} + +static inline bool has_uuid(u8 *uuid, u16 uuid_count, u8 (*uuids)[16]) +{ + int i; + + for (i = 0; i < uuid_count; i++) { + if (!memcmp(uuid, uuids[i], 16)) + return true; + } + + return false; +} + +static bool eir_has_uuids(u8 *eir, u16 eir_len, u16 uuid_count, u8 (*uuids)[16]) +{ + u16 parsed = 0; + + while (parsed < eir_len) { + u8 field_len = eir[0]; + u8 uuid[16]; + int i; + + if (field_len == 0) + break; + + if (eir_len - parsed < field_len + 1) + break; + + switch (eir[1]) { + case EIR_UUID16_ALL: + case EIR_UUID16_SOME: + for (i = 0; i + 3 <= field_len; i += 2) { + memcpy(uuid, bluetooth_base_uuid, 16); + uuid[13] = eir[i + 3]; + uuid[12] = eir[i + 2]; + if (has_uuid(uuid, uuid_count, uuids)) + return true; + } + break; + case EIR_UUID32_ALL: + case EIR_UUID32_SOME: + for (i = 0; i + 5 <= field_len; i += 4) { + memcpy(uuid, bluetooth_base_uuid, 16); + uuid[15] = eir[i + 5]; + uuid[14] = eir[i + 4]; + uuid[13] = eir[i + 3]; + uuid[12] = eir[i + 2]; + if (has_uuid(uuid, uuid_count, uuids)) + return true; + } + break; + case EIR_UUID128_ALL: + case EIR_UUID128_SOME: + for (i = 0; i + 17 <= field_len; i += 16) { + memcpy(uuid, eir + i + 2, 16); + if (has_uuid(uuid, uuid_count, uuids)) + return true; + } + break; + } + + parsed += field_len + 1; + eir += field_len + 1; + } + + return false; +} + +static void restart_le_scan(struct hci_dev *hdev) +{ + /* If controller is not scanning we are done. */ + if (!hci_dev_test_flag(hdev, HCI_LE_SCAN)) + return; + + if (time_after(jiffies + DISCOV_LE_RESTART_DELAY, + hdev->discovery.scan_start + + hdev->discovery.scan_duration)) + return; + + queue_delayed_work(hdev->workqueue, &hdev->le_scan_restart, + DISCOV_LE_RESTART_DELAY); +} + +static bool is_filter_match(struct hci_dev *hdev, s8 rssi, u8 *eir, + u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len) +{ + /* If a RSSI threshold has been specified, and + * HCI_QUIRK_STRICT_DUPLICATE_FILTER is not set, then all results with + * a RSSI smaller than the RSSI threshold will be dropped. If the quirk + * is set, let it through for further processing, as we might need to + * restart the scan. + * + * For BR/EDR devices (pre 1.2) providing no RSSI during inquiry, + * the results are also dropped. + */ + if (hdev->discovery.rssi != HCI_RSSI_INVALID && + (rssi == HCI_RSSI_INVALID || + (rssi < hdev->discovery.rssi && + !test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks)))) + return false; + + if (hdev->discovery.uuid_count != 0) { + /* If a list of UUIDs is provided in filter, results with no + * matching UUID should be dropped. + */ + if (!eir_has_uuids(eir, eir_len, hdev->discovery.uuid_count, + hdev->discovery.uuids) && + !eir_has_uuids(scan_rsp, scan_rsp_len, + hdev->discovery.uuid_count, + hdev->discovery.uuids)) + return false; + } + + /* If duplicate filtering does not report RSSI changes, then restart + * scanning to ensure updated result with updated RSSI values. + */ + if (test_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks)) { + restart_le_scan(hdev); + + /* Validate RSSI value against the RSSI threshold once more. */ + if (hdev->discovery.rssi != HCI_RSSI_INVALID && + rssi < hdev->discovery.rssi) + return false; + } + + return true; +} + +void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, + u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, + u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len) +{ + char buf[512]; + struct mgmt_ev_device_found *ev = (void *)buf; + size_t ev_size; + + /* Don't send events for a non-kernel initiated discovery. With + * LE one exception is if we have pend_le_reports > 0 in which + * case we're doing passive scanning and want these events. + */ + if (!hci_discovery_active(hdev)) { + if (link_type == ACL_LINK) + return; + if (link_type == LE_LINK && list_empty(&hdev->pend_le_reports)) + return; + } + + if (hdev->discovery.result_filtering) { + /* We are using service discovery */ + if (!is_filter_match(hdev, rssi, eir, eir_len, scan_rsp, + scan_rsp_len)) + return; + } + + /* Make sure that the buffer is big enough. The 5 extra bytes + * are for the potential CoD field. + */ + if (sizeof(*ev) + eir_len + scan_rsp_len + 5 > sizeof(buf)) + return; + + memset(buf, 0, sizeof(buf)); + + /* In case of device discovery with BR/EDR devices (pre 1.2), the + * RSSI value was reported as 0 when not available. This behavior + * is kept when using device discovery. This is required for full + * backwards compatibility with the API. + * + * However when using service discovery, the value 127 will be + * returned when the RSSI is not available. + */ + if (rssi == HCI_RSSI_INVALID && !hdev->discovery.report_invalid_rssi && + link_type == ACL_LINK) + rssi = 0; + + bacpy(&ev->addr.bdaddr, bdaddr); + ev->addr.type = link_to_bdaddr(link_type, addr_type); + ev->rssi = rssi; + ev->flags = cpu_to_le32(flags); + + if (eir_len > 0) + /* Copy EIR or advertising data into event */ + memcpy(ev->eir, eir, eir_len); + + if (dev_class && !eir_has_data_type(ev->eir, eir_len, EIR_CLASS_OF_DEV)) + eir_len = eir_append_data(ev->eir, eir_len, EIR_CLASS_OF_DEV, + dev_class, 3); + + if (scan_rsp_len > 0) + /* Append scan response data to event */ + memcpy(ev->eir + eir_len, scan_rsp, scan_rsp_len); + + ev->eir_len = cpu_to_le16(eir_len + scan_rsp_len); + ev_size = sizeof(*ev) + eir_len + scan_rsp_len; + + mgmt_event(MGMT_EV_DEVICE_FOUND, hdev, ev, ev_size, NULL); +} + +void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, + u8 addr_type, s8 rssi, u8 *name, u8 name_len) +{ + struct mgmt_ev_device_found *ev; + char buf[sizeof(*ev) + HCI_MAX_NAME_LENGTH + 2]; + u16 eir_len; + + ev = (struct mgmt_ev_device_found *) buf; + + memset(buf, 0, sizeof(buf)); + + bacpy(&ev->addr.bdaddr, bdaddr); + ev->addr.type = link_to_bdaddr(link_type, addr_type); + ev->rssi = rssi; + + eir_len = eir_append_data(ev->eir, 0, EIR_NAME_COMPLETE, name, + name_len); + + ev->eir_len = cpu_to_le16(eir_len); + + mgmt_event(MGMT_EV_DEVICE_FOUND, hdev, ev, sizeof(*ev) + eir_len, NULL); +} + +void mgmt_discovering(struct hci_dev *hdev, u8 discovering) +{ + struct mgmt_ev_discovering ev; + + BT_DBG("%s discovering %u", hdev->name, discovering); + + memset(&ev, 0, sizeof(ev)); + ev.type = hdev->discovery.type; + ev.discovering = discovering; + + mgmt_event(MGMT_EV_DISCOVERING, hdev, &ev, sizeof(ev), NULL); +} + +static void adv_enable_complete(struct hci_dev *hdev, u8 status, u16 opcode) +{ + BT_DBG("%s status %u", hdev->name, status); +} + +void mgmt_reenable_advertising(struct hci_dev *hdev) +{ + struct hci_request req; + + if (!hci_dev_test_flag(hdev, HCI_ADVERTISING) && + !hci_dev_test_flag(hdev, HCI_ADVERTISING_INSTANCE)) + return; + + hci_req_init(&req, hdev); + enable_advertising(&req); + hci_req_run(&req, adv_enable_complete); +} + +static struct hci_mgmt_chan chan = { + .channel = HCI_CHANNEL_CONTROL, + .handler_count = ARRAY_SIZE(mgmt_handlers), + .handlers = mgmt_handlers, + .hdev_init = mgmt_init_hdev, +}; + +int mgmt_init(void) +{ + return hci_mgmt_chan_register(&chan); +} + +void mgmt_exit(void) +{ + hci_mgmt_chan_unregister(&chan); +} |