mgmt.c 211 KB
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/*
   BlueZ - Bluetooth protocol stack for Linux
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   Copyright (C) 2010  Nokia Corporation
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   Copyright (C) 2011-2012 Intel Corporation
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   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 */

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#include <linux/module.h>
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#include <asm/unaligned.h>

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
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#include <net/bluetooth/hci_sock.h>
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#include <net/bluetooth/l2cap.h>
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#include <net/bluetooth/mgmt.h>
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#include "hci_request.h"
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#include "smp.h"
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#include "mgmt_util.h"
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#define MGMT_VERSION	1
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#define MGMT_REVISION	10
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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,
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	MGMT_OP_SET_BONDABLE,
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	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,
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	MGMT_OP_SET_DEVICE_ID,
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	MGMT_OP_SET_ADVERTISING,
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	MGMT_OP_SET_BREDR,
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	MGMT_OP_SET_STATIC_ADDRESS,
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	MGMT_OP_SET_SCAN_PARAMS,
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	MGMT_OP_SET_SECURE_CONN,
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	MGMT_OP_SET_DEBUG_KEYS,
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	MGMT_OP_SET_PRIVACY,
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	MGMT_OP_LOAD_IRKS,
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	MGMT_OP_GET_CONN_INFO,
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	MGMT_OP_GET_CLOCK_INFO,
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	MGMT_OP_ADD_DEVICE,
	MGMT_OP_REMOVE_DEVICE,
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	MGMT_OP_LOAD_CONN_PARAM,
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	MGMT_OP_READ_UNCONF_INDEX_LIST,
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	MGMT_OP_READ_CONFIG_INFO,
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	MGMT_OP_SET_EXTERNAL_CONFIG,
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	MGMT_OP_SET_PUBLIC_ADDRESS,
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	MGMT_OP_START_SERVICE_DISCOVERY,
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	MGMT_OP_READ_LOCAL_OOB_EXT_DATA,
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	MGMT_OP_READ_EXT_INDEX_LIST,
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	MGMT_OP_READ_ADV_FEATURES,
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	MGMT_OP_ADD_ADVERTISING,
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	MGMT_OP_REMOVE_ADVERTISING,
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};

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,
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	MGMT_EV_PASSKEY_NOTIFY,
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	MGMT_EV_NEW_IRK,
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	MGMT_EV_NEW_CSRK,
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	MGMT_EV_DEVICE_ADDED,
	MGMT_EV_DEVICE_REMOVED,
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	MGMT_EV_NEW_CONN_PARAM,
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	MGMT_EV_UNCONF_INDEX_ADDED,
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	MGMT_EV_UNCONF_INDEX_REMOVED,
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	MGMT_EV_NEW_CONFIG_OPTIONS,
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	MGMT_EV_EXT_INDEX_ADDED,
	MGMT_EV_EXT_INDEX_REMOVED,
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	MGMT_EV_LOCAL_OOB_DATA_UPDATED,
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	MGMT_EV_ADVERTISING_ADDED,
	MGMT_EV_ADVERTISING_REMOVED,
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};

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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,
};

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#define CACHE_TIMEOUT	msecs_to_jiffies(2 * 1000)
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#define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \
		 "\x00\x00\x00\x00\x00\x00\x00\x00"

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/* 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 */
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	MGMT_STATUS_AUTH_FAILED,	/* PIN or Key Missing */
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	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;
}

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static int mgmt_index_event(u16 event, struct hci_dev *hdev, void *data,
			    u16 len, int flag)
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{
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	return mgmt_send_event(event, hdev, HCI_CHANNEL_CONTROL, data, len,
			       flag, NULL);
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}

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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);
}

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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);
}

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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,
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			       HCI_SOCK_TRUSTED, skip_sk);
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}

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static u8 le_addr_type(u8 mgmt_addr_type)
{
	if (mgmt_addr_type == BDADDR_LE_PUBLIC)
		return ADDR_LE_DEV_PUBLIC;
	else
		return ADDR_LE_DEV_RANDOM;
}

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static int read_version(struct sock *sk, struct hci_dev *hdev, void *data,
			u16 data_len)
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{
	struct mgmt_rp_read_version rp;

	BT_DBG("sock %p", sk);

	rp.version = MGMT_VERSION;
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	rp.revision = cpu_to_le16(MGMT_REVISION);
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	return mgmt_cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_VERSION, 0,
				 &rp, sizeof(rp));
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}

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static int read_commands(struct sock *sk, struct hci_dev *hdev, void *data,
			 u16 data_len)
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{
	struct mgmt_rp_read_commands *rp;
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	u16 num_commands, num_events;
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	size_t rp_size;
	int i, err;

	BT_DBG("sock %p", sk);

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	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);
	}

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	rp_size = sizeof(*rp) + ((num_commands + num_events) * sizeof(u16));

	rp = kmalloc(rp_size, GFP_KERNEL);
	if (!rp)
		return -ENOMEM;

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	rp->num_commands = cpu_to_le16(num_commands);
	rp->num_events = cpu_to_le16(num_events);
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	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);
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		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);
	}
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	err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_COMMANDS, 0,
				rp, rp_size);
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	kfree(rp);

	return err;
}

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static int read_index_list(struct sock *sk, struct hci_dev *hdev, void *data,
			   u16 data_len)
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{
	struct mgmt_rp_read_index_list *rp;
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	struct hci_dev *d;
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	size_t rp_len;
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	u16 count;
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	int err;
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	BT_DBG("sock %p", sk);

	read_lock(&hci_dev_list_lock);

	count = 0;
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	list_for_each_entry(d, &hci_dev_list, list) {
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		if (d->dev_type == HCI_BREDR &&
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		    !hci_dev_test_flag(d, HCI_UNCONFIGURED))
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			count++;
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	}

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	rp_len = sizeof(*rp) + (2 * count);
	rp = kmalloc(rp_len, GFP_ATOMIC);
	if (!rp) {
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		read_unlock(&hci_dev_list_lock);
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		return -ENOMEM;
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	}
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	count = 0;
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	list_for_each_entry(d, &hci_dev_list, list) {
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		if (hci_dev_test_flag(d, HCI_SETUP) ||
		    hci_dev_test_flag(d, HCI_CONFIG) ||
		    hci_dev_test_flag(d, HCI_USER_CHANNEL))
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			continue;

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		/* Devices marked as raw-only are neither configured
		 * nor unconfigured controllers.
		 */
		if (test_bit(HCI_QUIRK_RAW_DEVICE, &d->quirks))
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			continue;

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		if (d->dev_type == HCI_BREDR &&
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		    !hci_dev_test_flag(d, HCI_UNCONFIGURED)) {
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			rp->index[count++] = cpu_to_le16(d->id);
			BT_DBG("Added hci%u", d->id);
		}
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	}

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	rp->num_controllers = cpu_to_le16(count);
	rp_len = sizeof(*rp) + (2 * count);

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	read_unlock(&hci_dev_list_lock);

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	err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE, MGMT_OP_READ_INDEX_LIST,
				0, rp, rp_len);
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	kfree(rp);

	return err;
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}

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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 &&
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		    hci_dev_test_flag(d, HCI_UNCONFIGURED))
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			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) {
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		if (hci_dev_test_flag(d, HCI_SETUP) ||
		    hci_dev_test_flag(d, HCI_CONFIG) ||
		    hci_dev_test_flag(d, HCI_USER_CHANNEL))
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			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 &&
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		    hci_dev_test_flag(d, HCI_UNCONFIGURED)) {
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			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);

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	err = mgmt_cmd_complete(sk, MGMT_INDEX_NONE,
				MGMT_OP_READ_UNCONF_INDEX_LIST, 0, rp, rp_len);
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	kfree(rp);

	return err;
}

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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;
}

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static bool is_configured(struct hci_dev *hdev)
{
	if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) &&
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	    !hci_dev_test_flag(hdev, HCI_EXT_CONFIGURED))
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		return false;

	if (test_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks) &&
	    !bacmp(&hdev->public_addr, BDADDR_ANY))
		return false;

	return true;
}

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static __le32 get_missing_options(struct hci_dev *hdev)
{
	u32 options = 0;

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	if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) &&
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	    !hci_dev_test_flag(hdev, HCI_EXT_CONFIGURED))
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		options |= MGMT_OPTION_EXTERNAL_CONFIG;

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	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);
}

569 570 571 572
static int new_options(struct hci_dev *hdev, struct sock *skip)
{
	__le32 options = get_missing_options(hdev);

573 574
	return mgmt_generic_event(MGMT_EV_NEW_CONFIG_OPTIONS, hdev, &options,
				  sizeof(options), skip);
575 576
}

577 578 579 580
static int send_options_rsp(struct sock *sk, u16 opcode, struct hci_dev *hdev)
{
	__le32 options = get_missing_options(hdev);

581 582
	return mgmt_cmd_complete(sk, hdev->id, opcode, 0, &options,
				 sizeof(options));
583 584
}

585 586 587 588
static int read_config_info(struct sock *sk, struct hci_dev *hdev,
			    void *data, u16 data_len)
{
	struct mgmt_rp_read_config_info rp;
589
	u32 options = 0;
590 591 592 593 594 595 596

	BT_DBG("sock %p %s", sk, hdev->name);

	hci_dev_lock(hdev);

	memset(&rp, 0, sizeof(rp));
	rp.manufacturer = cpu_to_le16(hdev->manufacturer);
597

598 599 600
	if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks))
		options |= MGMT_OPTION_EXTERNAL_CONFIG;

601
	if (hdev->set_bdaddr)
602 603 604 605
		options |= MGMT_OPTION_PUBLIC_ADDRESS;

	rp.supported_options = cpu_to_le32(options);
	rp.missing_options = get_missing_options(hdev);
606 607 608

	hci_dev_unlock(hdev);

609 610
	return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_CONFIG_INFO, 0,
				 &rp, sizeof(rp));
611 612
}

613 614 615 616 617
static u32 get_supported_settings(struct hci_dev *hdev)
{
	u32 settings = 0;

	settings |= MGMT_SETTING_POWERED;
618
	settings |= MGMT_SETTING_BONDABLE;
619
	settings |= MGMT_SETTING_DEBUG_KEYS;
620 621
	settings |= MGMT_SETTING_CONNECTABLE;
	settings |= MGMT_SETTING_DISCOVERABLE;
622

623
	if (lmp_bredr_capable(hdev)) {
624 625
		if (hdev->hci_ver >= BLUETOOTH_VER_1_2)
			settings |= MGMT_SETTING_FAST_CONNECTABLE;
626 627
		settings |= MGMT_SETTING_BREDR;
		settings |= MGMT_SETTING_LINK_SECURITY;
628 629 630 631 632

		if (lmp_ssp_capable(hdev)) {
			settings |= MGMT_SETTING_SSP;
			settings |= MGMT_SETTING_HS;
		}
633

634
		if (lmp_sc_capable(hdev))
635
			settings |= MGMT_SETTING_SECURE_CONN;
636
	}
637

638
	if (lmp_le_capable(hdev)) {
639
		settings |= MGMT_SETTING_LE;
640
		settings |= MGMT_SETTING_ADVERTISING;
641
		settings |= MGMT_SETTING_SECURE_CONN;
642
		settings |= MGMT_SETTING_PRIVACY;
643
		settings |= MGMT_SETTING_STATIC_ADDRESS;
644
	}
645

646 647
	if (test_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks) ||
	    hdev->set_bdaddr)
648 649
		settings |= MGMT_SETTING_CONFIGURATION;

650 651 652 653 654 655 656
	return settings;
}

static u32 get_current_settings(struct hci_dev *hdev)
{
	u32 settings = 0;

657
	if (hdev_is_powered(hdev))
658 659
		settings |= MGMT_SETTING_POWERED;

660
	if (hci_dev_test_flag(hdev, HCI_CONNECTABLE))
661 662
		settings |= MGMT_SETTING_CONNECTABLE;

663
	if (hci_dev_test_flag(hdev, HCI_FAST_CONNECTABLE))
664 665
		settings |= MGMT_SETTING_FAST_CONNECTABLE;

666
	if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
667 668
		settings |= MGMT_SETTING_DISCOVERABLE;

669
	if (hci_dev_test_flag(hdev, HCI_BONDABLE))
670
		settings |= MGMT_SETTING_BONDABLE;
671

672
	if (hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
673 674
		settings |= MGMT_SETTING_BREDR;

675
	if (hci_dev_test_flag(hdev, HCI_LE_ENABLED))
676 677
		settings |= MGMT_SETTING_LE;

678
	if (hci_dev_test_flag(hdev, HCI_LINK_SECURITY))
679 680
		settings |= MGMT_SETTING_LINK_SECURITY;

681
	if (hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
682 683
		settings |= MGMT_SETTING_SSP;

684
	if (hci_dev_test_flag(hdev, HCI_HS_ENABLED))
685 686
		settings |= MGMT_SETTING_HS;

687
	if (hci_dev_test_flag(hdev, HCI_ADVERTISING))
688 689
		settings |= MGMT_SETTING_ADVERTISING;

690
	if (hci_dev_test_flag(hdev, HCI_SC_ENABLED))
691 692
		settings |= MGMT_SETTING_SECURE_CONN;

693
	if (hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS))
694 695
		settings |= MGMT_SETTING_DEBUG_KEYS;

696
	if (hci_dev_test_flag(hdev, HCI_PRIVACY))
697 698
		settings |= MGMT_SETTING_PRIVACY;

699 700 701 702 703
	/* 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
704
	 * will never be set. If the address is configured, then if the
705 706 707 708 709 710
	 * 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.
	 */
711
	if (hci_dev_test_flag(hdev, HCI_FORCE_STATIC_ADDR) ||
712
	    !hci_dev_test_flag(hdev, HCI_BREDR_ENABLED) ||
713 714 715 716 717
	    !bacmp(&hdev->bdaddr, BDADDR_ANY)) {
		if (bacmp(&hdev->static_addr, BDADDR_ANY))
			settings |= MGMT_SETTING_STATIC_ADDRESS;
	}

718 719 720
	return settings;
}

721 722
#define PNP_INFO_SVCLASS_ID		0x1200

723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764
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;
}

765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797
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;
}

798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830
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;
}

831 832 833 834 835 836 837 838 839 840 841 842
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);
}

843 844 845 846 847 848 849 850 851
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))
852
		return hdev->cur_adv_instance;
853 854 855 856

	return 0x00;
}

857
static u8 create_default_scan_rsp_data(struct hci_dev *hdev, u8 *ptr)
858
{
859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880
	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;
881 882
}

883 884
static u8 create_instance_scan_rsp_data(struct hci_dev *hdev, u8 instance,
					u8 *ptr)
885
{
886 887 888 889 890 891
	struct adv_info *adv_instance;

	adv_instance = hci_find_adv_instance(hdev, instance);
	if (!adv_instance)
		return 0;

892 893 894
	/* TODO: Set the appropriate entries based on advertising instance flags
	 * here once flags other than 0 are supported.
	 */
895 896
	memcpy(ptr, adv_instance->scan_rsp_data,
	       adv_instance->scan_rsp_len);
897

898
	return adv_instance->scan_rsp_len;
899 900
}

901
static void update_inst_scan_rsp_data(struct hci_request *req, u8 instance)
902 903 904 905 906
{
	struct hci_dev *hdev = req->hdev;
	struct hci_cp_le_set_scan_rsp_data cp;
	u8 len;

907
	if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
908 909 910 911
		return;

	memset(&cp, 0, sizeof(cp));

912
	if (instance)
913
		len = create_instance_scan_rsp_data(hdev, instance, cp.data);
914 915
	else
		len = create_default_scan_rsp_data(hdev, cp.data);
916

917
	if (hdev->scan_rsp_data_len == len &&
918
	    !memcmp(cp.data, hdev->scan_rsp_data, len))
919 920
		return;

921 922
	memcpy(hdev->scan_rsp_data, cp.data, sizeof(cp.data));
	hdev->scan_rsp_data_len = len;
923 924 925 926 927 928

	cp.length = len;

	hci_req_add(req, HCI_OP_LE_SET_SCAN_RSP_DATA, sizeof(cp), &cp);
}

929 930
static void update_scan_rsp_data(struct hci_request *req)
{
931
	update_inst_scan_rsp_data(req, get_current_adv_instance(req->hdev));
932 933
}

934 935
static u8 get_adv_discov_flags(struct hci_dev *hdev)
{
936
	struct mgmt_pending_cmd *cmd;
937 938 939 940

	/* If there's a pending mgmt command the flags will not yet have
	 * their final values, so check for this first.
	 */
941
	cmd = pending_find(MGMT_OP_SET_DISCOVERABLE, hdev);
942 943 944 945 946 947 948
	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 {
949
		if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE))
950
			return LE_AD_LIMITED;
951
		else if (hci_dev_test_flag(hdev, HCI_DISCOVERABLE))
952 953 954 955 956 957
			return LE_AD_GENERAL;
	}

	return 0;
}

958 959 960
static bool get_connectable(struct hci_dev *hdev)
{
	struct mgmt_pending_cmd *cmd;
961

962 963 964 965 966 967
	/* 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;
968

969
		return cp->val;
970 971
	}

972 973
	return hci_dev_test_flag(hdev, HCI_CONNECTABLE);
}
974

975 976 977
static u32 get_adv_instance_flags(struct hci_dev *hdev, u8 instance)
{
	u32 flags;
978
	struct adv_info *adv_instance;
979

980 981 982 983 984
	if (instance == 0x00) {
		/* Instance 0 always manages the "Tx Power" and "Flags"
		 * fields
		 */
		flags = MGMT_ADV_FLAG_TX_POWER | MGMT_ADV_FLAG_MANAGED_FLAGS;
985

986 987 988 989 990
		/* 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;
991

992
		return flags;
993
	}
994

995
	adv_instance = hci_find_adv_instance(hdev, instance);
996

997 998 999
	/* Return 0 when we got an invalid instance identifier. */
	if (!adv_instance)
		return 0;
1000

1001
	return adv_instance->flags;
1002 1003
}

1004
static u8 get_cur_adv_instance_scan_rsp_len(struct hci_dev *hdev)
1005
{
1006 1007 1008 1009 1010 1011 1012 1013 1014
	u8 instance = get_current_adv_instance(hdev);
	struct adv_info *adv_instance;

	/* Ignore instance 0 */
	if (instance == 0x00)
		return 0;

	adv_instance = hci_find_adv_instance(hdev, instance);
	if (!adv_instance)
1015 1016 1017 1018 1019
		return 0;

	/* TODO: Take into account the "appearance" and "local-name" flags here.
	 * These are currently being ignored as they are not supported.
	 */
1020
	return adv_instance->scan_rsp_len;
1021 1022
}

1023
static u8 create_instance_adv_data(struct hci_dev *hdev, u8 instance, u8 *ptr)
1024
{
1025
	struct adv_info *adv_instance = NULL;
1026
	u8 ad_len = 0, flags = 0;
1027 1028 1029 1030 1031 1032 1033 1034 1035 1036
	u32 instance_flags;

	/* Return 0 when the current instance identifier is invalid. */
	if (instance) {
		adv_instance = hci_find_adv_instance(hdev, instance);
		if (!adv_instance)
			return 0;
	}

	instance_flags = get_adv_instance_flags(hdev, instance);
1037

1038 1039 1040
	/* The Add Advertising command allows userspace to set both the general
	 * and limited discoverable flags.
	 */
1041
	if (instance_flags & MGMT_ADV_FLAG_DISCOV)
1042 1043
		flags |= LE_AD_GENERAL;

1044
	if (instance_flags & MGMT_ADV_FLAG_LIMITED_DISCOV)
1045 1046
		flags |= LE_AD_LIMITED;

1047
	if (flags || (instance_flags & MGMT_ADV_FLAG_MANAGED_FLAGS)) {
1048 1049 1050 1051 1052 1053
		/* If a discovery flag wasn't provided, simply use the global
		 * settings.
		 */
		if (!flags)
			flags |= get_adv_discov_flags(hdev);

1054 1055 1056
		if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
			flags |= LE_AD_NO_BREDR;

1057 1058 1059 1060 1061 1062 1063
		/* 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;
1064

1065 1066 1067
			ad_len += 3;
			ptr += 3;
		}
1068 1069
	}

1070 1071 1072 1073 1074
	if (adv_instance) {
		memcpy(ptr, adv_instance->adv_data,
		       adv_instance->adv_data_len);
		ad_len += adv_instance->adv_data_len;
		ptr += adv_instance->adv_data_len;
1075 1076
	}

1077
	/* Provide Tx Power only if we can provide a valid value for it */
1078
	if (hdev->adv_tx_power != HCI_TX_POWER_INVALID &&
1079
	    (instance_flags & MGMT_ADV_FLAG_TX_POWER)) {
1080 1081 1082 1083 1084 1085 1086 1087
		ptr[0] = 0x02;
		ptr[1] = EIR_TX_POWER;
		ptr[2] = (u8)hdev->adv_tx_power;

		ad_len += 3;
		ptr += 3;
	}

1088
	return ad_len;
1089 1090
}

1091
static void update_inst_adv_data(struct hci_request *req, u8 instance)
1092 1093 1094 1095 1096
{
	struct hci_dev *hdev = req->hdev;
	struct hci_cp_le_set_adv_data cp;
	u8 len;

1097
	if (!hci_dev_test_flag(hdev, HCI_LE_ENABLED))
1098 1099 1100 1101
		return;

	memset(&cp, 0, sizeof(cp));

1102
	len = create_instance_adv_data(hdev, instance, cp.data);
1103

1104
	/* There's nothing to do if the data hasn't changed */
1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116
	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);
}

1117 1118
static void update_adv_data(struct hci_request *req)
{
1119
	update_inst_adv_data(req, get_current_adv_instance(req->hdev));
1120 1121
}

1122 1123 1124 1125 1126 1127 1128 1129 1130 1131
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);
}

1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154
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);
	}

1155
	if (hdev->inq_tx_power != HCI_TX_POWER_INVALID) {
1156 1157 1158 1159 1160 1161 1162
		ptr[0] = 2;
		ptr[1] = EIR_TX_POWER;
		ptr[2] = (u8) hdev->inq_tx_power;

		ptr += 3;
	}

1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174
	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;
	}

1175
	ptr = create_uuid16_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
1176
	ptr = create_uuid32_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
1177
	ptr = create_uuid128_list(hdev, ptr, HCI_MAX_EIR_LENGTH - (ptr - data));
1178 1179
}

1180
static void update_eir(struct hci_request *req)
1181
{
1182
	struct hci_dev *hdev = req->hdev;
1183 1184
	struct hci_cp_write_eir cp;

1185
	if (!hdev_is_powered(hdev))
1186
		return;
1187

1188
	if (!lmp_ext_inq_capable(hdev))
1189
		return;
1190

1191
	if (!hci_dev_test_flag(hdev, HCI_SSP_ENABLED))
1192
		return;
1193

1194
	if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE))
1195
		return;
1196 1197 1198 1199 1200 1201

	memset(&cp, 0, sizeof(cp));

	create_eir(hdev, cp.data);

	if (memcmp(cp.data, hdev->eir, sizeof(cp.data)) == 0)
1202
		return;
1203 1204 1205

	memcpy(hdev->eir, cp.data, sizeof(cp.data));

1206
	hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp);
1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219
}

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;
}

1220
static void update_class(struct hci_request *req)
1221
{
1222
	struct hci_dev *hdev = req->hdev;
1223 1224 1225 1226
	u8 cod[3];

	BT_DBG("%s", hdev->name);

1227
	if (!hdev_is_powered(hdev))
1228
		return;
1229

1230
	if (!hci_dev_test_flag(hdev, HCI_BREDR_ENABLED))
1231 1232
		return;

1233
	if (hci_dev_test_flag(hdev, HCI_SERVICE_CACHE))
1234
		return;
1235 1236 1237 1238 1239

	cod[0] = hdev->minor_class;
	cod[1] = hdev->major_class;
	cod[2] = get_service_classes(hdev);

1240
	if (hci_dev_test_flag(hdev, HCI_LIMITED_DISCOVERABLE))
1241 1242
		cod[1] |= 0x20;

1243
	if (memcmp(cod, hdev->dev_class, 3) == 0)
1244
		return;
1245

1246
	hci_req_add(req, HCI_OP_WRITE_CLASS_OF_DEV, sizeof(cod), cod);
1247 1248
}

1249 1250 1251 1252 1253 1254 1255
static void disable_advertising(struct hci_request *req)
{
	u8 enable = 0x00;

	hci_req_add(req, HCI_OP_LE_SET_ADV_ENABLE, sizeof(enable), &enable);
}

1256 1257 1258 1259
static void enable_advertising(struct hci_request *req)
{
	struct hci_dev *hdev = req->hdev;
	struct hci_cp_le_set_adv_param cp;
1260
	u8 own_addr_type, enable = 0x01;
1261
	bool connectable;
1262 1263
	u8 instance;
	u32 flags;
1264

1265 1266 1267
	if (hci_conn_num(hdev, LE_LINK) > 0)
		return;

1268
	if (hci_dev_test_flag(hdev, HCI_LE_ADV))
1269 1270
		disable_advertising(req);

1271
	/* Clear the HCI_LE_ADV bit temporarily so that the
1272 1273 1274 1275
	 * 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.
	 */
1276
	hci_dev_clear_flag(hdev, HCI_LE_ADV);
1277

1278 1279
	instance = get_current_adv_instance(hdev);
	flags = get_adv_instance_flags(hdev, instance);
1280 1281 1282 1283 1284 1285

	/* 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);
1286

1287 1288 1289 1290 1291
	/* 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)
1292 1293
		return;

1294
	memset(&cp, 0, sizeof(cp));
1295 1296
	cp.min_interval = cpu_to_le16(hdev->le_adv_min_interval);
	cp.max_interval = cpu_to_le16(hdev->le_adv_max_interval);
1297 1298 1299

	if (connectable)
		cp.type = LE_ADV_IND;
1300
	else if (get_cur_adv_instance_scan_rsp_len(hdev))
1301 1302 1303 1304
		cp.type = LE_ADV_SCAN_IND;
	else
		cp.type = LE_ADV_NONCONN_IND;

1305
	cp.own_address_type = own_addr_type;
1306 1307 1308 1309 1310 1311 1312
	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);
}

1313 1314 1315
static void service_cache_off(struct work_struct *work)
{
	struct hci_dev *hdev = container_of(work, struct hci_dev,
1316
					    service_cache.work);
1317
	struct hci_request req;