hci_event.c 129.9 KB
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/*
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   BlueZ - Bluetooth protocol stack for Linux
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   Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
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   Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>

   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
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   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
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   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

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   ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
   COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
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   SOFTWARE IS DISCLAIMED.
*/

/* Bluetooth HCI event handling. */

#include <asm/unaligned.h>

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
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#include <net/bluetooth/mgmt.h>
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#include "hci_request.h"
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#include "hci_debugfs.h"
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#include "a2mp.h"
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#include "amp.h"
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#include "smp.h"
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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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/* Handle HCI Event packets */

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static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb)
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{
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	__u8 status = *((__u8 *) skb->data);
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	BT_DBG("%s status 0x%2.2x", hdev->name, status);
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	if (status)
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		return;
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	clear_bit(HCI_INQUIRY, &hdev->flags);
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	smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
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	wake_up_bit(&hdev->flags, HCI_INQUIRY);
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	hci_dev_lock(hdev);
	hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
	hci_dev_unlock(hdev);

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	hci_conn_check_pending(hdev);
}
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static void hci_cc_periodic_inq(struct hci_dev *hdev, struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);

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	BT_DBG("%s status 0x%2.2x", hdev->name, status);
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	if (status)
		return;

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	hci_dev_set_flag(hdev, HCI_PERIODIC_INQ);
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}

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static void hci_cc_exit_periodic_inq(struct hci_dev *hdev, struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);
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	BT_DBG("%s status 0x%2.2x", hdev->name, status);
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	if (status)
		return;
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	hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);
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	hci_conn_check_pending(hdev);
}

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static void hci_cc_remote_name_req_cancel(struct hci_dev *hdev,
					  struct sk_buff *skb)
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{
	BT_DBG("%s", hdev->name);
}

static void hci_cc_role_discovery(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_role_discovery *rp = (void *) skb->data;
	struct hci_conn *conn;

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	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
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	if (rp->status)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
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	if (conn)
		conn->role = rp->role;
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	hci_dev_unlock(hdev);
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}

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static void hci_cc_read_link_policy(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_read_link_policy *rp = (void *) skb->data;
	struct hci_conn *conn;

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	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
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	if (rp->status)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
	if (conn)
		conn->link_policy = __le16_to_cpu(rp->policy);

	hci_dev_unlock(hdev);
}

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static void hci_cc_write_link_policy(struct hci_dev *hdev, struct sk_buff *skb)
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{
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	struct hci_rp_write_link_policy *rp = (void *) skb->data;
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	struct hci_conn *conn;
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	void *sent;
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	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
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	if (rp->status)
		return;
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	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY);
	if (!sent)
		return;
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	hci_dev_lock(hdev);
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	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
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	if (conn)
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		conn->link_policy = get_unaligned_le16(sent + 2);
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	hci_dev_unlock(hdev);
}
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static void hci_cc_read_def_link_policy(struct hci_dev *hdev,
					struct sk_buff *skb)
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{
	struct hci_rp_read_def_link_policy *rp = (void *) skb->data;

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	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
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	if (rp->status)
		return;

	hdev->link_policy = __le16_to_cpu(rp->policy);
}

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static void hci_cc_write_def_link_policy(struct hci_dev *hdev,
					 struct sk_buff *skb)
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{
	__u8 status = *((__u8 *) skb->data);
	void *sent;

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	BT_DBG("%s status 0x%2.2x", hdev->name, status);
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	if (status)
		return;

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	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY);
	if (!sent)
		return;

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	hdev->link_policy = get_unaligned_le16(sent);
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}

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static void hci_cc_reset(struct hci_dev *hdev, struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);
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	BT_DBG("%s status 0x%2.2x", hdev->name, status);
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	clear_bit(HCI_RESET, &hdev->flags);

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	if (status)
		return;

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	/* Reset all non-persistent flags */
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	hci_dev_clear_volatile_flags(hdev);
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	hci_discovery_set_state(hdev, DISCOVERY_STOPPED);

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	hdev->inq_tx_power = HCI_TX_POWER_INVALID;
	hdev->adv_tx_power = HCI_TX_POWER_INVALID;
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	memset(hdev->adv_data, 0, sizeof(hdev->adv_data));
	hdev->adv_data_len = 0;
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	memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data));
	hdev->scan_rsp_data_len = 0;
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	hdev->le_scan_type = LE_SCAN_PASSIVE;

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	hdev->ssp_debug_mode = 0;
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	hci_bdaddr_list_clear(&hdev->le_white_list);
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}
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static void hci_cc_read_stored_link_key(struct hci_dev *hdev,
					struct sk_buff *skb)
{
	struct hci_rp_read_stored_link_key *rp = (void *)skb->data;
	struct hci_cp_read_stored_link_key *sent;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY);
	if (!sent)
		return;

	if (!rp->status && sent->read_all == 0x01) {
		hdev->stored_max_keys = rp->max_keys;
		hdev->stored_num_keys = rp->num_keys;
	}
}

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static void hci_cc_delete_stored_link_key(struct hci_dev *hdev,
					  struct sk_buff *skb)
{
	struct hci_rp_delete_stored_link_key *rp = (void *)skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	if (rp->num_keys <= hdev->stored_num_keys)
		hdev->stored_num_keys -= rp->num_keys;
	else
		hdev->stored_num_keys = 0;
}

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static void hci_cc_write_local_name(struct hci_dev *hdev, struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);
	void *sent;
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	BT_DBG("%s status 0x%2.2x", hdev->name, status);
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	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME);
	if (!sent)
		return;
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	hci_dev_lock(hdev);

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	if (hci_dev_test_flag(hdev, HCI_MGMT))
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		mgmt_set_local_name_complete(hdev, sent, status);
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	else if (!status)
		memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH);
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	hci_dev_unlock(hdev);
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}

static void hci_cc_read_local_name(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_read_local_name *rp = (void *) skb->data;

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	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
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	if (rp->status)
		return;

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	if (hci_dev_test_flag(hdev, HCI_SETUP) ||
	    hci_dev_test_flag(hdev, HCI_CONFIG))
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		memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH);
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}

static void hci_cc_write_auth_enable(struct hci_dev *hdev, struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);
	void *sent;

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	BT_DBG("%s status 0x%2.2x", hdev->name, status);
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	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE);
	if (!sent)
		return;

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	hci_dev_lock(hdev);

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	if (!status) {
		__u8 param = *((__u8 *) sent);

		if (param == AUTH_ENABLED)
			set_bit(HCI_AUTH, &hdev->flags);
		else
			clear_bit(HCI_AUTH, &hdev->flags);
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	}
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	if (hci_dev_test_flag(hdev, HCI_MGMT))
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		mgmt_auth_enable_complete(hdev, status);
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	hci_dev_unlock(hdev);
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}

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static void hci_cc_write_encrypt_mode(struct hci_dev *hdev, struct sk_buff *skb)
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{
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	__u8 status = *((__u8 *) skb->data);
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	__u8 param;
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	void *sent;

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	BT_DBG("%s status 0x%2.2x", hdev->name, status);
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	if (status)
		return;

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	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE);
	if (!sent)
		return;
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	param = *((__u8 *) sent);
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	if (param)
		set_bit(HCI_ENCRYPT, &hdev->flags);
	else
		clear_bit(HCI_ENCRYPT, &hdev->flags);
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}
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static void hci_cc_write_scan_enable(struct hci_dev *hdev, struct sk_buff *skb)
{
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	__u8 status = *((__u8 *) skb->data);
	__u8 param;
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	void *sent;
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	BT_DBG("%s status 0x%2.2x", hdev->name, status);
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	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE);
	if (!sent)
		return;
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	param = *((__u8 *) sent);

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	hci_dev_lock(hdev);

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	if (status) {
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		hdev->discov_timeout = 0;
		goto done;
	}

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	if (param & SCAN_INQUIRY)
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		set_bit(HCI_ISCAN, &hdev->flags);
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	else
		clear_bit(HCI_ISCAN, &hdev->flags);
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	if (param & SCAN_PAGE)
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		set_bit(HCI_PSCAN, &hdev->flags);
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	else
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		clear_bit(HCI_PSCAN, &hdev->flags);
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done:
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	hci_dev_unlock(hdev);
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}
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static void hci_cc_read_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_read_class_of_dev *rp = (void *) skb->data;
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	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
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	if (rp->status)
		return;
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	memcpy(hdev->dev_class, rp->dev_class, 3);
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	BT_DBG("%s class 0x%.2x%.2x%.2x", hdev->name,
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	       hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]);
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}
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static void hci_cc_write_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);
	void *sent;
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	BT_DBG("%s status 0x%2.2x", hdev->name, status);
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	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV);
	if (!sent)
		return;
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	hci_dev_lock(hdev);

	if (status == 0)
		memcpy(hdev->dev_class, sent, 3);

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	if (hci_dev_test_flag(hdev, HCI_MGMT))
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		mgmt_set_class_of_dev_complete(hdev, sent, status);

	hci_dev_unlock(hdev);
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}
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static void hci_cc_read_voice_setting(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_read_voice_setting *rp = (void *) skb->data;
	__u16 setting;

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	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
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	if (rp->status)
		return;

	setting = __le16_to_cpu(rp->voice_setting);

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	if (hdev->voice_setting == setting)
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		return;

	hdev->voice_setting = setting;

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	BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting);
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	if (hdev->notify)
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		hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
}

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static void hci_cc_write_voice_setting(struct hci_dev *hdev,
				       struct sk_buff *skb)
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{
	__u8 status = *((__u8 *) skb->data);
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	__u16 setting;
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	void *sent;

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	BT_DBG("%s status 0x%2.2x", hdev->name, status);
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	if (status)
		return;

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	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING);
	if (!sent)
		return;
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	setting = get_unaligned_le16(sent);
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	if (hdev->voice_setting == setting)
		return;

	hdev->voice_setting = setting;
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	BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting);
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	if (hdev->notify)
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		hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING);
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}

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static void hci_cc_read_num_supported_iac(struct hci_dev *hdev,
					  struct sk_buff *skb)
{
	struct hci_rp_read_num_supported_iac *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	hdev->num_iac = rp->num_iac;

	BT_DBG("%s num iac %d", hdev->name, hdev->num_iac);
}

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static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);
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	struct hci_cp_write_ssp_mode *sent;
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	BT_DBG("%s status 0x%2.2x", hdev->name, status);
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	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE);
	if (!sent)
		return;

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	hci_dev_lock(hdev);

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	if (!status) {
		if (sent->mode)
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			hdev->features[1][0] |= LMP_HOST_SSP;
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		else
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			hdev->features[1][0] &= ~LMP_HOST_SSP;
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	}

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	if (hci_dev_test_flag(hdev, HCI_MGMT))
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		mgmt_ssp_enable_complete(hdev, sent->mode, status);
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	else if (!status) {
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		if (sent->mode)
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			hci_dev_set_flag(hdev, HCI_SSP_ENABLED);
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		else
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			hci_dev_clear_flag(hdev, HCI_SSP_ENABLED);
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	}
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	hci_dev_unlock(hdev);
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}

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static void hci_cc_write_sc_support(struct hci_dev *hdev, struct sk_buff *skb)
{
	u8 status = *((u8 *) skb->data);
	struct hci_cp_write_sc_support *sent;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT);
	if (!sent)
		return;

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	hci_dev_lock(hdev);

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	if (!status) {
		if (sent->support)
			hdev->features[1][0] |= LMP_HOST_SC;
		else
			hdev->features[1][0] &= ~LMP_HOST_SC;
	}

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	if (!hci_dev_test_flag(hdev, HCI_MGMT) && !status) {
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		if (sent->support)
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			hci_dev_set_flag(hdev, HCI_SC_ENABLED);
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		else
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			hci_dev_clear_flag(hdev, HCI_SC_ENABLED);
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	}
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	hci_dev_unlock(hdev);
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}

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static void hci_cc_read_local_version(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_read_local_version *rp = (void *) skb->data;
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	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
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	if (rp->status)
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		return;
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	if (hci_dev_test_flag(hdev, HCI_SETUP) ||
	    hci_dev_test_flag(hdev, HCI_CONFIG)) {
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		hdev->hci_ver = rp->hci_ver;
		hdev->hci_rev = __le16_to_cpu(rp->hci_rev);
		hdev->lmp_ver = rp->lmp_ver;
		hdev->manufacturer = __le16_to_cpu(rp->manufacturer);
		hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver);
	}
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}

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static void hci_cc_read_local_commands(struct hci_dev *hdev,
				       struct sk_buff *skb)
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{
	struct hci_rp_read_local_commands *rp = (void *) skb->data;
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	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
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	if (rp->status)
		return;

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	if (hci_dev_test_flag(hdev, HCI_SETUP) ||
	    hci_dev_test_flag(hdev, HCI_CONFIG))
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		memcpy(hdev->commands, rp->commands, sizeof(hdev->commands));
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}
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static void hci_cc_read_local_features(struct hci_dev *hdev,
				       struct sk_buff *skb)
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{
	struct hci_rp_read_local_features *rp = (void *) skb->data;
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	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
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	if (rp->status)
		return;
585

586
	memcpy(hdev->features, rp->features, 8);
587

588 589
	/* Adjust default settings according to features
	 * supported by device. */
L
Linus Torvalds 已提交
590

591
	if (hdev->features[0][0] & LMP_3SLOT)
592
		hdev->pkt_type |= (HCI_DM3 | HCI_DH3);
L
Linus Torvalds 已提交
593

594
	if (hdev->features[0][0] & LMP_5SLOT)
595
		hdev->pkt_type |= (HCI_DM5 | HCI_DH5);
L
Linus Torvalds 已提交
596

597
	if (hdev->features[0][1] & LMP_HV2) {
598 599 600
		hdev->pkt_type  |= (HCI_HV2);
		hdev->esco_type |= (ESCO_HV2);
	}
L
Linus Torvalds 已提交
601

602
	if (hdev->features[0][1] & LMP_HV3) {
603 604 605
		hdev->pkt_type  |= (HCI_HV3);
		hdev->esco_type |= (ESCO_HV3);
	}
L
Linus Torvalds 已提交
606

607
	if (lmp_esco_capable(hdev))
608
		hdev->esco_type |= (ESCO_EV3);
609

610
	if (hdev->features[0][4] & LMP_EV4)
611
		hdev->esco_type |= (ESCO_EV4);
612

613
	if (hdev->features[0][4] & LMP_EV5)
614
		hdev->esco_type |= (ESCO_EV5);
L
Linus Torvalds 已提交
615

616
	if (hdev->features[0][5] & LMP_EDR_ESCO_2M)
617 618
		hdev->esco_type |= (ESCO_2EV3);

619
	if (hdev->features[0][5] & LMP_EDR_ESCO_3M)
620 621
		hdev->esco_type |= (ESCO_3EV3);

622
	if (hdev->features[0][5] & LMP_EDR_3S_ESCO)
623
		hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5);
624
}
L
Linus Torvalds 已提交
625

626
static void hci_cc_read_local_ext_features(struct hci_dev *hdev,
627
					   struct sk_buff *skb)
628 629 630
{
	struct hci_rp_read_local_ext_features *rp = (void *) skb->data;

631
	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
632 633

	if (rp->status)
634
		return;
635

636 637
	if (hdev->max_page < rp->max_page)
		hdev->max_page = rp->max_page;
638

639 640
	if (rp->page < HCI_MAX_PAGES)
		memcpy(hdev->features[rp->page], rp->features, 8);
641 642
}

643
static void hci_cc_read_flow_control_mode(struct hci_dev *hdev,
644
					  struct sk_buff *skb)
645 646 647
{
	struct hci_rp_read_flow_control_mode *rp = (void *) skb->data;

648
	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
649

650 651 652 653
	if (rp->status)
		return;

	hdev->flow_ctl_mode = rp->mode;
654 655
}

656 657 658
static void hci_cc_read_buffer_size(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_read_buffer_size *rp = (void *) skb->data;
L
Linus Torvalds 已提交
659

660
	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
L
Linus Torvalds 已提交
661

662 663
	if (rp->status)
		return;
L
Linus Torvalds 已提交
664

665 666 667 668 669 670 671 672
	hdev->acl_mtu  = __le16_to_cpu(rp->acl_mtu);
	hdev->sco_mtu  = rp->sco_mtu;
	hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt);
	hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt);

	if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) {
		hdev->sco_mtu  = 64;
		hdev->sco_pkts = 8;
L
Linus Torvalds 已提交
673
	}
674 675 676 677

	hdev->acl_cnt = hdev->acl_pkts;
	hdev->sco_cnt = hdev->sco_pkts;

678 679
	BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu,
	       hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts);
680 681 682 683 684 685
}

static void hci_cc_read_bd_addr(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_read_bd_addr *rp = (void *) skb->data;

686
	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
687

688 689 690 691
	if (rp->status)
		return;

	if (test_bit(HCI_INIT, &hdev->flags))
692
		bacpy(&hdev->bdaddr, &rp->bdaddr);
693

694
	if (hci_dev_test_flag(hdev, HCI_SETUP))
695
		bacpy(&hdev->setup_addr, &rp->bdaddr);
696 697
}

698 699 700 701 702 703 704
static void hci_cc_read_page_scan_activity(struct hci_dev *hdev,
					   struct sk_buff *skb)
{
	struct hci_rp_read_page_scan_activity *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

705 706 707 708
	if (rp->status)
		return;

	if (test_bit(HCI_INIT, &hdev->flags)) {
709 710 711 712 713
		hdev->page_scan_interval = __le16_to_cpu(rp->interval);
		hdev->page_scan_window = __le16_to_cpu(rp->window);
	}
}

714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732
static void hci_cc_write_page_scan_activity(struct hci_dev *hdev,
					    struct sk_buff *skb)
{
	u8 status = *((u8 *) skb->data);
	struct hci_cp_write_page_scan_activity *sent;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY);
	if (!sent)
		return;

	hdev->page_scan_interval = __le16_to_cpu(sent->interval);
	hdev->page_scan_window = __le16_to_cpu(sent->window);
}

733 734 735 736 737 738 739
static void hci_cc_read_page_scan_type(struct hci_dev *hdev,
					   struct sk_buff *skb)
{
	struct hci_rp_read_page_scan_type *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

740 741 742 743
	if (rp->status)
		return;

	if (test_bit(HCI_INIT, &hdev->flags))
744 745 746
		hdev->page_scan_type = rp->type;
}

747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762
static void hci_cc_write_page_scan_type(struct hci_dev *hdev,
					struct sk_buff *skb)
{
	u8 status = *((u8 *) skb->data);
	u8 *type;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE);
	if (type)
		hdev->page_scan_type = *type;
}

763
static void hci_cc_read_data_block_size(struct hci_dev *hdev,
764
					struct sk_buff *skb)
765 766 767
{
	struct hci_rp_read_data_block_size *rp = (void *) skb->data;

768
	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
769 770 771 772 773 774 775 776 777 778 779

	if (rp->status)
		return;

	hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
	hdev->block_len = __le16_to_cpu(rp->block_len);
	hdev->num_blocks = __le16_to_cpu(rp->num_blocks);

	hdev->block_cnt = hdev->num_blocks;

	BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
780
	       hdev->block_cnt, hdev->block_len);
781 782
}

783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817
static void hci_cc_read_clock(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_read_clock *rp = (void *) skb->data;
	struct hci_cp_read_clock *cp;
	struct hci_conn *conn;

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

	if (skb->len < sizeof(*rp))
		return;

	if (rp->status)
		return;

	hci_dev_lock(hdev);

	cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK);
	if (!cp)
		goto unlock;

	if (cp->which == 0x00) {
		hdev->clock = le32_to_cpu(rp->clock);
		goto unlock;
	}

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
	if (conn) {
		conn->clock = le32_to_cpu(rp->clock);
		conn->clock_accuracy = le16_to_cpu(rp->accuracy);
	}

unlock:
	hci_dev_unlock(hdev);
}

818
static void hci_cc_read_local_amp_info(struct hci_dev *hdev,
819
				       struct sk_buff *skb)
820 821 822
{
	struct hci_rp_read_local_amp_info *rp = (void *) skb->data;

823
	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
824 825

	if (rp->status)
826
		goto a2mp_rsp;
827 828 829 830 831 832 833 834 835 836 837 838

	hdev->amp_status = rp->amp_status;
	hdev->amp_total_bw = __le32_to_cpu(rp->total_bw);
	hdev->amp_max_bw = __le32_to_cpu(rp->max_bw);
	hdev->amp_min_latency = __le32_to_cpu(rp->min_latency);
	hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu);
	hdev->amp_type = rp->amp_type;
	hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap);
	hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size);
	hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to);
	hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to);

839 840
a2mp_rsp:
	a2mp_send_getinfo_rsp(hdev);
841 842
}

843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858
static void hci_cc_read_local_amp_assoc(struct hci_dev *hdev,
					struct sk_buff *skb)
{
	struct hci_rp_read_local_amp_assoc *rp = (void *) skb->data;
	struct amp_assoc *assoc = &hdev->loc_assoc;
	size_t rem_len, frag_len;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		goto a2mp_rsp;

	frag_len = skb->len - sizeof(*rp);
	rem_len = __le16_to_cpu(rp->rem_len);

	if (rem_len > frag_len) {
859
		BT_DBG("frag_len %zu rem_len %zu", frag_len, rem_len);
860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876

		memcpy(assoc->data + assoc->offset, rp->frag, frag_len);
		assoc->offset += frag_len;

		/* Read other fragments */
		amp_read_loc_assoc_frag(hdev, rp->phy_handle);

		return;
	}

	memcpy(assoc->data + assoc->offset, rp->frag, rem_len);
	assoc->len = assoc->offset + rem_len;
	assoc->offset = 0;

a2mp_rsp:
	/* Send A2MP Rsp when all fragments are received */
	a2mp_send_getampassoc_rsp(hdev, rp->status);
877
	a2mp_send_create_phy_link_req(hdev, rp->status);
878 879
}

880
static void hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev,
881
					 struct sk_buff *skb)
882
{
883
	struct hci_rp_read_inq_rsp_tx_power *rp = (void *) skb->data;
884

885
	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
886

887 888 889 890
	if (rp->status)
		return;

	hdev->inq_tx_power = rp->tx_power;
891 892
}

893 894 895 896 897 898
static void hci_cc_pin_code_reply(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_pin_code_reply *rp = (void *) skb->data;
	struct hci_cp_pin_code_reply *cp;
	struct hci_conn *conn;

899
	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
900

901 902
	hci_dev_lock(hdev);

903
	if (hci_dev_test_flag(hdev, HCI_MGMT))
904
		mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status);
905

906
	if (rp->status)
907
		goto unlock;
908 909 910

	cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY);
	if (!cp)
911
		goto unlock;
912 913 914 915

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
	if (conn)
		conn->pin_length = cp->pin_len;
916 917 918

unlock:
	hci_dev_unlock(hdev);
919 920 921 922 923 924
}

static void hci_cc_pin_code_neg_reply(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_pin_code_neg_reply *rp = (void *) skb->data;

925
	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
926

927 928
	hci_dev_lock(hdev);

929
	if (hci_dev_test_flag(hdev, HCI_MGMT))
930
		mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr,
931
						 rp->status);
932 933

	hci_dev_unlock(hdev);
934
}
935

936 937 938 939 940
static void hci_cc_le_read_buffer_size(struct hci_dev *hdev,
				       struct sk_buff *skb)
{
	struct hci_rp_le_read_buffer_size *rp = (void *) skb->data;

941
	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
942 943 944 945 946 947 948 949 950 951 952

	if (rp->status)
		return;

	hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
	hdev->le_pkts = rp->le_max_pkt;

	hdev->le_cnt = hdev->le_pkts;

	BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
}
953

954 955 956 957 958 959 960
static void hci_cc_le_read_local_features(struct hci_dev *hdev,
					  struct sk_buff *skb)
{
	struct hci_rp_le_read_local_features *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

961 962 963 964
	if (rp->status)
		return;

	memcpy(hdev->le_features, rp->features, 8);
965 966
}

967 968 969 970 971 972 973
static void hci_cc_le_read_adv_tx_power(struct hci_dev *hdev,
					struct sk_buff *skb)
{
	struct hci_rp_le_read_adv_tx_power *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

974 975 976 977
	if (rp->status)
		return;

	hdev->adv_tx_power = rp->tx_power;
978 979
}

980 981 982 983
static void hci_cc_user_confirm_reply(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_user_confirm_reply *rp = (void *) skb->data;

984
	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
985

986 987
	hci_dev_lock(hdev);

988
	if (hci_dev_test_flag(hdev, HCI_MGMT))
989 990
		mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0,
						 rp->status);
991 992

	hci_dev_unlock(hdev);
993 994 995
}

static void hci_cc_user_confirm_neg_reply(struct hci_dev *hdev,
996
					  struct sk_buff *skb)
997 998 999
{
	struct hci_rp_user_confirm_reply *rp = (void *) skb->data;

1000
	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1001

1002 1003
	hci_dev_lock(hdev);

1004
	if (hci_dev_test_flag(hdev, HCI_MGMT))
1005
		mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr,
1006
						     ACL_LINK, 0, rp->status);
1007 1008

	hci_dev_unlock(hdev);
1009 1010
}

1011 1012 1013 1014
static void hci_cc_user_passkey_reply(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_user_confirm_reply *rp = (void *) skb->data;

1015
	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1016 1017 1018

	hci_dev_lock(hdev);

1019
	if (hci_dev_test_flag(hdev, HCI_MGMT))
1020
		mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK,
1021
						 0, rp->status);
1022 1023 1024 1025 1026

	hci_dev_unlock(hdev);
}

static void hci_cc_user_passkey_neg_reply(struct hci_dev *hdev,
1027
					  struct sk_buff *skb)
1028 1029 1030
{
	struct hci_rp_user_confirm_reply *rp = (void *) skb->data;

1031
	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1032 1033 1034

	hci_dev_lock(hdev);

1035
	if (hci_dev_test_flag(hdev, HCI_MGMT))
1036
		mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
1037
						     ACL_LINK, 0, rp->status);
1038 1039 1040 1041

	hci_dev_unlock(hdev);
}

1042 1043
static void hci_cc_read_local_oob_data(struct hci_dev *hdev,
				       struct sk_buff *skb)
1044 1045 1046
{
	struct hci_rp_read_local_oob_data *rp = (void *) skb->data;

1047
	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1048 1049 1050 1051 1052 1053 1054 1055
}

static void hci_cc_read_local_oob_ext_data(struct hci_dev *hdev,
					   struct sk_buff *skb)
{
	struct hci_rp_read_local_oob_ext_data *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
1056 1057
}

1058 1059 1060 1061 1062 1063 1064
static void hci_cc_le_set_random_addr(struct hci_dev *hdev, struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);
	bdaddr_t *sent;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

1065 1066 1067
	if (status)
		return;

1068 1069 1070 1071 1072 1073
	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR);
	if (!sent)
		return;

	hci_dev_lock(hdev);

1074
	bacpy(&hdev->random_addr, sent);
1075 1076 1077 1078

	hci_dev_unlock(hdev);
}

1079 1080 1081 1082 1083 1084
static void hci_cc_le_set_adv_enable(struct hci_dev *hdev, struct sk_buff *skb)
{
	__u8 *sent, status = *((__u8 *) skb->data);

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

1085
	if (status)
1086 1087
		return;

1088 1089
	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE);
	if (!sent)
1090 1091
		return;

1092 1093
	hci_dev_lock(hdev);

S
Stephen Hemminger 已提交
1094
	/* If we're doing connection initiation as peripheral. Set a
1095 1096 1097 1098 1099
	 * timeout in case something goes wrong.
	 */
	if (*sent) {
		struct hci_conn *conn;

1100
		hci_dev_set_flag(hdev, HCI_LE_ADV);
1101

1102 1103 1104 1105
		conn = hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT);
		if (conn)
			queue_delayed_work(hdev->workqueue,
					   &conn->le_conn_timeout,
1106
					   conn->conn_timeout);
1107
	} else {
1108
		hci_dev_clear_flag(hdev, HCI_LE_ADV);
1109 1110
	}

1111
	hci_dev_unlock(hdev);
1112 1113
}

1114 1115 1116 1117 1118 1119 1120
static void hci_cc_le_set_scan_param(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_cp_le_set_scan_param *cp;
	__u8 status = *((__u8 *) skb->data);

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

1121 1122 1123
	if (status)
		return;

1124 1125 1126 1127 1128 1129
	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM);
	if (!cp)
		return;

	hci_dev_lock(hdev);

1130
	hdev->le_scan_type = cp->type;
1131 1132 1133 1134

	hci_dev_unlock(hdev);
}

1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150
static bool has_pending_adv_report(struct hci_dev *hdev)
{
	struct discovery_state *d = &hdev->discovery;

	return bacmp(&d->last_adv_addr, BDADDR_ANY);
}

static void clear_pending_adv_report(struct hci_dev *hdev)
{
	struct discovery_state *d = &hdev->discovery;

	bacpy(&d->last_adv_addr, BDADDR_ANY);
	d->last_adv_data_len = 0;
}

static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr,
1151 1152
				     u8 bdaddr_type, s8 rssi, u32 flags,
				     u8 *data, u8 len)
1153 1154 1155 1156 1157
{
	struct discovery_state *d = &hdev->discovery;

	bacpy(&d->last_adv_addr, bdaddr);
	d->last_adv_addr_type = bdaddr_type;
1158
	d->last_adv_rssi = rssi;
1159
	d->last_adv_flags = flags;
1160 1161 1162 1163
	memcpy(d->last_adv_data, data, len);
	d->last_adv_data_len = len;
}

1164
static void hci_cc_le_set_scan_enable(struct hci_dev *hdev,
1165
				      struct sk_buff *skb)
1166 1167 1168 1169
{
	struct hci_cp_le_set_scan_enable *cp;
	__u8 status = *((__u8 *) skb->data);

1170
	BT_DBG("%s status 0x%2.2x", hdev->name, status);
1171

1172
	if (status)
1173 1174
		return;

1175 1176
	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE);
	if (!cp)
1177 1178
		return;

1179 1180
	hci_dev_lock(hdev);

1181
	switch (cp->enable) {
1182
	case LE_SCAN_ENABLE:
1183
		hci_dev_set_flag(hdev, HCI_LE_SCAN);
1184 1185
		if (hdev->le_scan_type == LE_SCAN_ACTIVE)
			clear_pending_adv_report(hdev);
1186 1187
		break;

1188
	case LE_SCAN_DISABLE:
1189 1190 1191 1192 1193 1194 1195 1196
		/* We do this here instead of when setting DISCOVERY_STOPPED
		 * since the latter would potentially require waiting for
		 * inquiry to stop too.
		 */
		if (has_pending_adv_report(hdev)) {
			struct discovery_state *d = &hdev->discovery;

			mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
1197
					  d->last_adv_addr_type, NULL,
1198
					  d->last_adv_rssi, d->last_adv_flags,
1199
					  d->last_adv_data,
1200 1201 1202
					  d->last_adv_data_len, NULL, 0);
		}

1203 1204 1205 1206 1207
		/* Cancel this timer so that we don't try to disable scanning
		 * when it's already disabled.
		 */
		cancel_delayed_work(&hdev->le_scan_disable);

1208
		hci_dev_clear_flag(hdev, HCI_LE_SCAN);
1209

1210 1211
		/* The HCI_LE_SCAN_INTERRUPTED flag indicates that we
		 * interrupted scanning due to a connect request. Mark
1212 1213 1214 1215
		 * therefore discovery as stopped. If this was not
		 * because of a connect request advertising might have
		 * been disabled because of active scanning, so
		 * re-enable it again if necessary.
1216
		 */
1217
		if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED))
1218
			hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
1219
		else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) &&
1220
			 hdev->discovery.state == DISCOVERY_FINDING)
1221 1222
			mgmt_reenable_advertising(hdev);

1223 1224 1225 1226 1227
		break;

	default:
		BT_ERR("Used reserved LE_Scan_Enable param %d", cp->enable);
		break;
1228
	}
1229 1230

	hci_dev_unlock(hdev);
1231 1232
}

1233 1234 1235 1236 1237 1238 1239
static void hci_cc_le_read_white_list_size(struct hci_dev *hdev,
					   struct sk_buff *skb)
{
	struct hci_rp_le_read_white_list_size *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x size %u", hdev->name, rp->status, rp->size);

1240 1241 1242 1243
	if (rp->status)
		return;

	hdev->le_white_list_size = rp->size;
1244 1245
}

1246 1247 1248 1249 1250 1251 1252
static void hci_cc_le_clear_white_list(struct hci_dev *hdev,
				       struct sk_buff *skb)
{
	__u8 status = *((__u8 *) skb->data);

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

1253 1254 1255
	if (status)
		return;

1256
	hci_bdaddr_list_clear(&hdev->le_white_list);
1257 1258 1259 1260 1261 1262 1263 1264 1265 1266
}

static void hci_cc_le_add_to_white_list(struct hci_dev *hdev,
					struct sk_buff *skb)
{
	struct hci_cp_le_add_to_white_list *sent;
	__u8 status = *((__u8 *) skb->data);

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

1267 1268 1269
	if (status)
		return;

1270 1271 1272 1273
	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_WHITE_LIST);
	if (!sent)
		return;

1274 1275
	hci_bdaddr_list_add(&hdev->le_white_list, &sent->bdaddr,
			   sent->bdaddr_type);
1276 1277 1278 1279 1280 1281 1282 1283 1284 1285
}

static void hci_cc_le_del_from_white_list(struct hci_dev *hdev,
					  struct sk_buff *skb)
{
	struct hci_cp_le_del_from_white_list *sent;
	__u8 status = *((__u8 *) skb->data);

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

1286 1287 1288
	if (status)
		return;

1289 1290 1291 1292
	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_WHITE_LIST);
	if (!sent)
		return;

1293 1294
	hci_bdaddr_list_del(&hdev->le_white_list, &sent->bdaddr,
			    sent->bdaddr_type);
1295 1296
}

1297 1298 1299 1300 1301 1302 1303
static void hci_cc_le_read_supported_states(struct hci_dev *hdev,
					    struct sk_buff *skb)
{
	struct hci_rp_le_read_supported_states *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

1304 1305 1306 1307
	if (rp->status)
		return;

	memcpy(hdev->le_states, rp->le_states, 8);
1308 1309
}

1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358
static void hci_cc_le_read_def_data_len(struct hci_dev *hdev,
					struct sk_buff *skb)
{
	struct hci_rp_le_read_def_data_len *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	hdev->le_def_tx_len = le16_to_cpu(rp->tx_len);
	hdev->le_def_tx_time = le16_to_cpu(rp->tx_time);
}

static void hci_cc_le_write_def_data_len(struct hci_dev *hdev,
					 struct sk_buff *skb)
{
	struct hci_cp_le_write_def_data_len *sent;
	__u8 status = *((__u8 *) skb->data);

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN);
	if (!sent)
		return;

	hdev->le_def_tx_len = le16_to_cpu(sent->tx_len);
	hdev->le_def_tx_time = le16_to_cpu(sent->tx_time);
}

static void hci_cc_le_read_max_data_len(struct hci_dev *hdev,
					struct sk_buff *skb)
{
	struct hci_rp_le_read_max_data_len *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
	hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
	hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
	hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
}

1359 1360
static void hci_cc_write_le_host_supported(struct hci_dev *hdev,
					   struct sk_buff *skb)
1361
{
1362
	struct hci_cp_write_le_host_supported *sent;
1363 1364
	__u8 status = *((__u8 *) skb->data);

1365
	BT_DBG("%s status 0x%2.2x", hdev->name, status);
1366

1367 1368 1369
	if (status)
		return;

1370
	sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED);
1371
	if (!sent)
1372 1373
		return;

1374 1375
	hci_dev_lock(hdev);

1376 1377
	if (sent->le) {
		hdev->features[1][0] |= LMP_HOST_LE;
1378
		hci_dev_set_flag(hdev, HCI_LE_ENABLED);
1379 1380
	} else {
		hdev->features[1][0] &= ~LMP_HOST_LE;
1381 1382
		hci_dev_clear_flag(hdev, HCI_LE_ENABLED);
		hci_dev_clear_flag(hdev, HCI_ADVERTISING);
1383
	}
1384 1385 1386 1387 1388

	if (sent->simul)
		hdev->features[1][0] |= LMP_HOST_LE_BREDR;
	else
		hdev->features[1][0] &= ~LMP_HOST_LE_BREDR;
1389 1390

	hci_dev_unlock(hdev);
1391 1392
}

1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411
static void hci_cc_set_adv_param(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_cp_le_set_adv_param *cp;
	u8 status = *((u8 *) skb->data);

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM);
	if (!cp)
		return;

	hci_dev_lock(hdev);
	hdev->adv_addr_type = cp->own_address_type;
	hci_dev_unlock(hdev);
}

1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425
static void hci_cc_write_remote_amp_assoc(struct hci_dev *hdev,
					  struct sk_buff *skb)
{
	struct hci_rp_write_remote_amp_assoc *rp = (void *) skb->data;

	BT_DBG("%s status 0x%2.2x phy_handle 0x%2.2x",
	       hdev->name, rp->status, rp->phy_handle);

	if (rp->status)
		return;

	amp_write_rem_assoc_continue(hdev, rp->phy_handle);
}

1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444
static void hci_cc_read_rssi(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_rp_read_rssi *rp = (void *) skb->data;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
	if (conn)
		conn->rssi = rp->rssi;

	hci_dev_unlock(hdev);
}

1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462
static void hci_cc_read_tx_power(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_cp_read_tx_power *sent;
	struct hci_rp_read_tx_power *rp = (void *) skb->data;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);

	if (rp->status)
		return;

	sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER);
	if (!sent)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle));
1463 1464 1465 1466 1467
	if (!conn)
		goto unlock;

	switch (sent->type) {
	case 0x00:
1468
		conn->tx_power = rp->tx_power;
1469 1470 1471 1472 1473
		break;
	case 0x01:
		conn->max_tx_power = rp->tx_power;
		break;
	}
1474

1475
unlock:
1476 1477 1478
	hci_dev_unlock(hdev);
}

1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493
static void hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, struct sk_buff *skb)
{
	u8 status = *((u8 *) skb->data);
	u8 *mode;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE);
	if (mode)
		hdev->ssp_debug_mode = *mode;
}

1494
static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
1495
{
1496
	BT_DBG("%s status 0x%2.2x", hdev->name, status);
1497 1498 1499

	if (status) {
		hci_conn_check_pending(hdev);
1500 1501 1502
		return;
	}

1503
	set_bit(HCI_INQUIRY, &hdev->flags);
L
Linus Torvalds 已提交
1504 1505
}

1506
static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
L
Linus Torvalds 已提交
1507
{
1508
	struct hci_cp_create_conn *cp;
L
Linus Torvalds 已提交
1509 1510
	struct hci_conn *conn;

1511
	BT_DBG("%s status 0x%2.2x", hdev->name, status);
1512 1513

	cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN);
L
Linus Torvalds 已提交
1514 1515 1516 1517 1518 1519 1520
	if (!cp)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);

1521
	BT_DBG("%s bdaddr %pMR hcon %p", hdev->name, &cp->bdaddr, conn);
L
Linus Torvalds 已提交
1522 1523 1524

	if (status) {
		if (conn && conn->state == BT_CONNECT) {
1525 1526
			if (status != 0x0c || conn->attempt > 2) {
				conn->state = BT_CLOSED;
1527
				hci_connect_cfm(conn, status);
1528 1529 1530
				hci_conn_del(conn);
			} else
				conn->state = BT_CONNECT2;
L
Linus Torvalds 已提交
1531 1532 1533
		}
	} else {
		if (!conn) {
1534 1535 1536
			conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr,
					    HCI_ROLE_MASTER);
			if (!conn)
1537
				BT_ERR("No memory for new connection");
L
Linus Torvalds 已提交
1538 1539 1540 1541 1542 1543
		}
	}

	hci_dev_unlock(hdev);
}

1544
static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status)
L
Linus Torvalds 已提交
1545
{
1546 1547 1548
	struct hci_cp_add_sco *cp;
	struct hci_conn *acl, *sco;
	__u16 handle;
L
Linus Torvalds 已提交
1549

1550
	BT_DBG("%s status 0x%2.2x", hdev->name, status);
1551

1552 1553
	if (!status)
		return;
L
Linus Torvalds 已提交
1554

1555 1556 1557
	cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO);
	if (!cp)
		return;
L
Linus Torvalds 已提交
1558

1559
	handle = __le16_to_cpu(cp->handle);
L
Linus Torvalds 已提交
1560

1561
	BT_DBG("%s handle 0x%4.4x", hdev->name, handle);
L
Linus Torvalds 已提交
1562

1563
	hci_dev_lock(hdev);
L
Linus Torvalds 已提交
1564

1565
	acl = hci_conn_hash_lookup_handle(hdev, handle);
1566 1567 1568 1569
	if (acl) {
		sco = acl->link;
		if (sco) {
			sco->state = BT_CLOSED;
L
Linus Torvalds 已提交
1570

1571
			hci_connect_cfm(sco, status);
1572 1573
			hci_conn_del(sco);
		}
1574
	}
L
Linus Torvalds 已提交
1575

1576 1577
	hci_dev_unlock(hdev);
}
L
Linus Torvalds 已提交
1578

1579 1580 1581 1582 1583
static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status)
{
	struct hci_cp_auth_requested *cp;
	struct hci_conn *conn;

1584
	BT_DBG("%s status 0x%2.2x", hdev->name, status);
1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597

	if (!status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED);
	if (!cp)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
	if (conn) {
		if (conn->state == BT_CONFIG) {
1598
			hci_connect_cfm(conn, status);
1599
			hci_conn_drop(conn);
1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610
		}
	}

	hci_dev_unlock(hdev);
}

static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status)
{
	struct hci_cp_set_conn_encrypt *cp;
	struct hci_conn *conn;

1611
	BT_DBG("%s status 0x%2.2x", hdev->name, status);
1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624

	if (!status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT);
	if (!cp)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
	if (conn) {
		if (conn->state == BT_CONFIG) {
1625
			hci_connect_cfm(conn, status);
1626
			hci_conn_drop(conn);
1627 1628 1629 1630 1631 1632
		}
	}

	hci_dev_unlock(hdev);
}

1633
static int hci_outgoing_auth_needed(struct hci_dev *hdev,
1634
				    struct hci_conn *conn)
1635 1636 1637 1638
{
	if (conn->state != BT_CONFIG || !conn->out)
		return 0;

1639
	if (conn->pending_sec_level == BT_SECURITY_SDP)
1640 1641 1642
		return 0;

	/* Only request authentication for SSP connections or non-SSP
1643 1644 1645
	 * devices with sec_level MEDIUM or HIGH or if MITM protection
	 * is requested.
	 */
1646
	if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) &&
1647
	    conn->pending_sec_level != BT_SECURITY_FIPS &&
1648 1649
	    conn->pending_sec_level != BT_SECURITY_HIGH &&
	    conn->pending_sec_level != BT_SECURITY_MEDIUM)
1650 1651 1652 1653 1654
		return 0;

	return 1;
}

1655
static int hci_resolve_name(struct hci_dev *hdev,
1656
				   struct inquiry_entry *e)
1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669
{
	struct hci_cp_remote_name_req cp;

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

	bacpy(&cp.bdaddr, &e->data.bdaddr);
	cp.pscan_rep_mode = e->data.pscan_rep_mode;
	cp.pscan_mode = e->data.pscan_mode;
	cp.clock_offset = e->data.clock_offset;

	return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
}

1670
static bool hci_resolve_next_name(struct hci_dev *hdev)
1671 1672 1673 1674
{
	struct discovery_state *discov = &hdev->discovery;
	struct inquiry_entry *e;

1675 1676 1677 1678
	if (list_empty(&discov->resolve))
		return false;

	e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
1679 1680 1681
	if (!e)
		return false;

1682 1683 1684 1685 1686 1687 1688 1689 1690
	if (hci_resolve_name(hdev, e) == 0) {
		e->name_state = NAME_PENDING;
		return true;
	}

	return false;
}

static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn,
1691
				   bdaddr_t *bdaddr, u8 *name, u8 name_len)
1692 1693 1694 1695
{
	struct discovery_state *discov = &hdev->discovery;
	struct inquiry_entry *e;

1696 1697 1698 1699 1700 1701 1702
	/* Update the mgmt connected state if necessary. Be careful with
	 * conn objects that exist but are not (yet) connected however.
	 * Only those in BT_CONFIG or BT_CONNECTED states can be
	 * considered connected.
	 */
	if (conn &&
	    (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) &&
1703
	    !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
1704
		mgmt_device_connected(hdev, conn, 0, name, name_len);
1705 1706 1707 1708

	if (discov->state == DISCOVERY_STOPPED)
		return;

1709 1710 1711 1712 1713 1714 1715
	if (discov->state == DISCOVERY_STOPPING)
		goto discov_complete;

	if (discov->state != DISCOVERY_RESOLVING)
		return;

	e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING);
1716 1717 1718 1719 1720 1721 1722 1723 1724
	/* If the device was not found in a list of found devices names of which
	 * are pending. there is no need to continue resolving a next name as it
	 * will be done upon receiving another Remote Name Request Complete
	 * Event */
	if (!e)
		return;

	list_del(&e->list);
	if (name) {
1725
		e->name_state = NAME_KNOWN;
1726 1727
		mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00,
				 e->data.rssi, name, name_len);
1728 1729
	} else {
		e->name_state = NAME_NOT_KNOWN;
1730 1731
	}

1732
	if (hci_resolve_next_name(hdev))
1733 1734 1735 1736 1737 1738
		return;

discov_complete:
	hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
}

1739 1740
static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status)
{
1741 1742 1743
	struct hci_cp_remote_name_req *cp;
	struct hci_conn *conn;

1744
	BT_DBG("%s status 0x%2.2x", hdev->name, status);
1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756

	/* If successful wait for the name req complete event before
	 * checking for the need to do authentication */
	if (!status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ);
	if (!cp)
		return;

	hci_dev_lock(hdev);

1757 1758
	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);

1759
	if (hci_dev_test_flag(hdev, HCI_MGMT))
1760
		hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0);
1761

1762 1763 1764 1765 1766 1767
	if (!conn)
		goto unlock;

	if (!hci_outgoing_auth_needed(hdev, conn))
		goto unlock;

1768
	if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
1769 1770
		struct hci_cp_auth_requested auth_cp;

1771 1772
		set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);

1773 1774 1775
		auth_cp.handle = __cpu_to_le16(conn->handle);
		hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED,
			     sizeof(auth_cp), &auth_cp);
1776 1777
	}

1778
unlock:
1779
	hci_dev_unlock(hdev);
1780
}
L
Linus Torvalds 已提交
1781

1782 1783 1784 1785 1786
static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status)
{
	struct hci_cp_read_remote_features *cp;
	struct hci_conn *conn;

1787
	BT_DBG("%s status 0x%2.2x", hdev->name, status);
1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800

	if (!status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES);
	if (!cp)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
	if (conn) {
		if (conn->state == BT_CONFIG) {
1801
			hci_connect_cfm(conn, status);
1802
			hci_conn_drop(conn);
1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813
		}
	}

	hci_dev_unlock(hdev);
}

static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status)
{
	struct hci_cp_read_remote_ext_features *cp;
	struct hci_conn *conn;

1814
	BT_DBG("%s status 0x%2.2x", hdev->name, status);
1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827

	if (!status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES);
	if (!cp)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
	if (conn) {
		if (conn->state == BT_CONFIG) {
1828
			hci_connect_cfm(conn, status);
1829
			hci_conn_drop(conn);
1830 1831 1832 1833 1834 1835
		}
	}

	hci_dev_unlock(hdev);
}

1836 1837
static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status)
{
1838 1839 1840 1841
	struct hci_cp_setup_sync_conn *cp;
	struct hci_conn *acl, *sco;
	__u16 handle;

1842
	BT_DBG("%s status 0x%2.2x", hdev->name, status);
1843 1844 1845 1846 1847 1848 1849 1850 1851 1852

	if (!status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN);
	if (!cp)
		return;

	handle = __le16_to_cpu(cp->handle);

1853
	BT_DBG("%s handle 0x%4.4x", hdev->name, handle);
1854 1855 1856 1857

	hci_dev_lock(hdev);

	acl = hci_conn_hash_lookup_handle(hdev, handle);
1858 1859 1860 1861
	if (acl) {
		sco = acl->link;
		if (sco) {
			sco->state = BT_CLOSED;
1862

1863
			hci_connect_cfm(sco, status);
1864 1865
			hci_conn_del(sco);
		}
1866 1867 1868
	}

	hci_dev_unlock(hdev);
L
Linus Torvalds 已提交
1869 1870
}

1871
static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
L
Linus Torvalds 已提交
1872
{
1873 1874
	struct hci_cp_sniff_mode *cp;
	struct hci_conn *conn;
L
Linus Torvalds 已提交
1875

1876
	BT_DBG("%s status 0x%2.2x", hdev->name, status);
1877

1878 1879
	if (!status)
		return;
1880

1881 1882 1883
	cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE);
	if (!cp)
		return;
1884

1885
	hci_dev_lock(hdev);
1886

1887
	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1888
	if (conn) {
1889
		clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
1890

1891
		if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
1892 1893 1894
			hci_sco_setup(conn, status);
	}

1895 1896
	hci_dev_unlock(hdev);
}
1897

1898 1899 1900 1901
static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
{
	struct hci_cp_exit_sniff_mode *cp;
	struct hci_conn *conn;
1902

1903
	BT_DBG("%s status 0x%2.2x", hdev->name, status);
1904

1905 1906
	if (!status)
		return;
1907

1908 1909 1910
	cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE);
	if (!cp)
		return;
1911

1912
	hci_dev_lock(hdev);
L
Linus Torvalds 已提交
1913

1914
	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
1915
	if (conn) {
1916
		clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags);
L
Linus Torvalds 已提交
1917

1918
		if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
1919 1920 1921
			hci_sco_setup(conn, status);
	}

1922
	hci_dev_unlock(hdev);
L
Linus Torvalds 已提交
1923 1924
}

1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941
static void hci_cs_disconnect(struct hci_dev *hdev, u8 status)
{
	struct hci_cp_disconnect *cp;
	struct hci_conn *conn;

	if (!status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT);
	if (!cp)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
	if (conn)
		mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
1942
				       conn->dst_type, status);
1943 1944 1945 1946

	hci_dev_unlock(hdev);
}

1947 1948
static void hci_cs_create_phylink(struct hci_dev *hdev, u8 status)
{
1949 1950
	struct hci_cp_create_phy_link *cp;

1951
	BT_DBG("%s status 0x%2.2x", hdev->name, status);
1952 1953 1954 1955 1956

	cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_PHY_LINK);
	if (!cp)
		return;

1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969
	hci_dev_lock(hdev);

	if (status) {
		struct hci_conn *hcon;

		hcon = hci_conn_hash_lookup_handle(hdev, cp->phy_handle);
		if (hcon)
			hci_conn_del(hcon);
	} else {
		amp_write_remote_assoc(hdev, cp->phy_handle);
	}

	hci_dev_unlock(hdev);
1970 1971
}

1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987
static void hci_cs_accept_phylink(struct hci_dev *hdev, u8 status)
{
	struct hci_cp_accept_phy_link *cp;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_ACCEPT_PHY_LINK);
	if (!cp)
		return;

	amp_write_remote_assoc(hdev, cp->phy_handle);
}

1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
{
	struct hci_cp_le_create_conn *cp;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	/* All connection failure handling is taken care of by the
	 * hci_le_conn_failed function which is triggered by the HCI
	 * request completion callbacks used for connecting.
	 */
	if (status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN);
	if (!cp)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->peer_addr);
	if (!conn)
		goto unlock;

	/* Store the initiator and responder address information which
	 * is needed for SMP. These values will not change during the
	 * lifetime of the connection.
	 */
	conn->init_addr_type = cp->own_address_type;
	if (cp->own_address_type == ADDR_LE_DEV_RANDOM)
		bacpy(&conn->init_addr, &hdev->random_addr);
	else
		bacpy(&conn->init_addr, &hdev->bdaddr);

	conn->resp_addr_type = cp->peer_addr_type;
	bacpy(&conn->resp_addr, &cp->peer_addr);

2025 2026 2027 2028 2029 2030 2031 2032
	/* We don't want the connection attempt to stick around
	 * indefinitely since LE doesn't have a page timeout concept
	 * like BR/EDR. Set a timer for any connection that doesn't use
	 * the white list for connecting.
	 */
	if (cp->filter_policy == HCI_LE_USE_PEER_ADDR)
		queue_delayed_work(conn->hdev->workqueue,
				   &conn->le_conn_timeout,
2033
				   conn->conn_timeout);
2034

2035 2036 2037 2038
unlock:
	hci_dev_unlock(hdev);
}

2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065
static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status)
{
	struct hci_cp_le_read_remote_features *cp;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (!status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES);
	if (!cp)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
	if (conn) {
		if (conn->state == BT_CONFIG) {
			hci_connect_cfm(conn, status);
			hci_conn_drop(conn);
		}
	}

	hci_dev_unlock(hdev);
}

2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095
static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status)
{
	struct hci_cp_le_start_enc *cp;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (!status)
		return;

	hci_dev_lock(hdev);

	cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC);
	if (!cp)
		goto unlock;

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
	if (!conn)
		goto unlock;

	if (conn->state != BT_CONNECTED)
		goto unlock;

	hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
	hci_conn_drop(conn);

unlock:
	hci_dev_unlock(hdev);
}

2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118
static void hci_cs_switch_role(struct hci_dev *hdev, u8 status)
{
	struct hci_cp_switch_role *cp;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, status);

	if (!status)
		return;

	cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE);
	if (!cp)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
	if (conn)
		clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);

	hci_dev_unlock(hdev);
}

2119
static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
L
Linus Torvalds 已提交
2120 2121
{
	__u8 status = *((__u8 *) skb->data);
2122 2123
	struct discovery_state *discov = &hdev->discovery;
	struct inquiry_entry *e;
L
Linus Torvalds 已提交
2124

2125
	BT_DBG("%s status 0x%2.2x", hdev->name, status);
L
Linus Torvalds 已提交
2126

2127
	hci_conn_check_pending(hdev);
2128 2129 2130 2131

	if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
		return;

2132
	smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */
2133 2134
	wake_up_bit(&hdev->flags, HCI_INQUIRY);

2135
	if (!hci_dev_test_flag(hdev, HCI_MGMT))
2136 2137
		return;

2138
	hci_dev_lock(hdev);
2139

2140
	if (discov->state != DISCOVERY_FINDING)
2141 2142 2143
		goto unlock;

	if (list_empty(&discov->resolve)) {
2144 2145 2146 2147 2148 2149 2150 2151 2152 2153
		/* When BR/EDR inquiry is active and no LE scanning is in
		 * progress, then change discovery state to indicate completion.
		 *
		 * When running LE scanning and BR/EDR inquiry simultaneously
		 * and the LE scan already finished, then change the discovery
		 * state to indicate completion.
		 */
		if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
		    !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
			hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2154 2155 2156 2157 2158 2159 2160 2161
		goto unlock;
	}

	e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED);
	if (e && hci_resolve_name(hdev, e) == 0) {
		e->name_state = NAME_PENDING;
		hci_discovery_set_state(hdev, DISCOVERY_RESOLVING);
	} else {
2162 2163 2164 2165 2166 2167 2168 2169 2170 2171
		/* When BR/EDR inquiry is active and no LE scanning is in
		 * progress, then change discovery state to indicate completion.
		 *
		 * When running LE scanning and BR/EDR inquiry simultaneously
		 * and the LE scan already finished, then change the discovery
		 * state to indicate completion.
		 */
		if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) ||
		    !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks))
			hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
2172 2173 2174
	}

unlock:
2175
	hci_dev_unlock(hdev);
L
Linus Torvalds 已提交
2176 2177
}

2178
static void hci_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb)
L
Linus Torvalds 已提交
2179
{
2180
	struct inquiry_data data;
2181
	struct inquiry_info *info = (void *) (skb->data + 1);
L
Linus Torvalds 已提交
2182 2183 2184 2185
	int num_rsp = *((__u8 *) skb->data);

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

2186 2187 2188
	if (!num_rsp)
		return;

2189
	if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
2190 2191
		return;

L
Linus Torvalds 已提交
2192
	hci_dev_lock(hdev);
2193

2194
	for (; num_rsp; num_rsp--, info++) {
2195
		u32 flags;
2196

L
Linus Torvalds 已提交
2197 2198 2199 2200 2201 2202
		bacpy(&data.bdaddr, &info->bdaddr);
		data.pscan_rep_mode	= info->pscan_rep_mode;
		data.pscan_period_mode	= info->pscan_period_mode;
		data.pscan_mode		= info->pscan_mode;
		memcpy(data.dev_class, info->dev_class, 3);
		data.clock_offset	= info->clock_offset;
2203
		data.rssi		= HCI_RSSI_INVALID;
2204
		data.ssp_mode		= 0x00;
2205

2206 2207
		flags = hci_inquiry_cache_update(hdev, &data, false);

2208
		mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
2209 2210
				  info->dev_class, HCI_RSSI_INVALID,
				  flags, NULL, 0, NULL, 0);
L
Linus Torvalds 已提交
2211
	}
2212

L
Linus Torvalds 已提交
2213 2214 2215
	hci_dev_unlock(hdev);
}

2216
static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
L
Linus Torvalds 已提交
2217
{
2218 2219
	struct hci_ev_conn_complete *ev = (void *) skb->data;
	struct hci_conn *conn;
L
Linus Torvalds 已提交
2220 2221 2222 2223 2224 2225

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

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
2226 2227 2228 2229 2230 2231 2232 2233 2234 2235
	if (!conn) {
		if (ev->link_type != SCO_LINK)
			goto unlock;

		conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
		if (!conn)
			goto unlock;

		conn->type = SCO_LINK;
	}
L
Linus Torvalds 已提交
2236 2237 2238

	if (!ev->status) {
		conn->handle = __le16_to_cpu(ev->handle);
2239 2240 2241 2242

		if (conn->type == ACL_LINK) {
			conn->state = BT_CONFIG;
			hci_conn_hold(conn);
2243 2244 2245 2246 2247 2248

			if (!conn->out && !hci_conn_ssp_enabled(conn) &&
			    !hci_find_link_key(hdev, &ev->bdaddr))
				conn->disc_timeout = HCI_PAIRING_TIMEOUT;
			else
				conn->disc_timeout = HCI_DISCONN_TIMEOUT;
2249 2250
		} else
			conn->state = BT_CONNECTED;
L
Linus Torvalds 已提交
2251

2252
		hci_debugfs_create_conn(conn);
2253 2254
		hci_conn_add_sysfs(conn);

L
Linus Torvalds 已提交
2255
		if (test_bit(HCI_AUTH, &hdev->flags))
2256
			set_bit(HCI_CONN_AUTH, &conn->flags);
L
Linus Torvalds 已提交
2257 2258

		if (test_bit(HCI_ENCRYPT, &hdev->flags))
2259
			set_bit(HCI_CONN_ENCRYPT, &conn->flags);
L
Linus Torvalds 已提交
2260

2261 2262 2263 2264
		/* Get remote features */
		if (conn->type == ACL_LINK) {
			struct hci_cp_read_remote_features cp;
			cp.handle = ev->handle;
2265
			hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES,
2266
				     sizeof(cp), &cp);
2267

2268
			hci_update_page_scan(hdev);
2269 2270
		}

L
Linus Torvalds 已提交
2271
		/* Set packet type for incoming connection */
2272
		if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) {
L
Linus Torvalds 已提交
2273 2274
			struct hci_cp_change_conn_ptype cp;
			cp.handle = ev->handle;
2275
			cp.pkt_type = cpu_to_le16(conn->pkt_type);
2276 2277
			hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp),
				     &cp);
L
Linus Torvalds 已提交
2278
		}
2279
	} else {
L
Linus Torvalds 已提交
2280
		conn->state = BT_CLOSED;
2281
		if (conn->type == ACL_LINK)
2282
			mgmt_connect_failed(hdev, &conn->dst, conn->type,
2283
					    conn->dst_type, ev->status);
2284
	}
L
Linus Torvalds 已提交
2285

2286 2287
	if (conn->type == ACL_LINK)
		hci_sco_setup(conn, ev->status);
L
Linus Torvalds 已提交
2288

2289
	if (ev->status) {
2290
		hci_connect_cfm(conn, ev->status);
L
Linus Torvalds 已提交
2291
		hci_conn_del(conn);
2292
	} else if (ev->link_type != ACL_LINK)
2293
		hci_connect_cfm(conn, ev->status);
L
Linus Torvalds 已提交
2294

2295
unlock:
L
Linus Torvalds 已提交
2296 2297
	hci_dev_unlock(hdev);

2298
	hci_conn_check_pending(hdev);
L
Linus Torvalds 已提交
2299 2300
}

2301 2302 2303 2304 2305 2306 2307 2308 2309
static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)
{
	struct hci_cp_reject_conn_req cp;

	bacpy(&cp.bdaddr, bdaddr);
	cp.reason = HCI_ERROR_REJ_BAD_ADDR;
	hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp);
}

2310
static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
L
Linus Torvalds 已提交
2311
{
2312 2313
	struct hci_ev_conn_request *ev = (void *) skb->data;
	int mask = hdev->link_mode;
2314 2315
	struct inquiry_entry *ie;
	struct hci_conn *conn;
2316
	__u8 flags = 0;
L
Linus Torvalds 已提交
2317

2318
	BT_DBG("%s bdaddr %pMR type 0x%x", hdev->name, &ev->bdaddr,
2319
	       ev->link_type);
L
Linus Torvalds 已提交
2320

2321 2322
	mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type,
				      &flags);
L
Linus Torvalds 已提交
2323

2324 2325 2326 2327 2328
	if (!(mask & HCI_LM_ACCEPT)) {
		hci_reject_conn(hdev, &ev->bdaddr);
		return;
	}

2329 2330 2331 2332 2333 2334
	if (hci_bdaddr_list_lookup(&hdev->blacklist, &ev->bdaddr,
				   BDADDR_BREDR)) {
		hci_reject_conn(hdev, &ev->bdaddr);
		return;
	}

2335 2336 2337 2338
	/* Require HCI_CONNECTABLE or a whitelist entry to accept the
	 * connection. These features are only touched through mgmt so
	 * only do the checks if HCI_MGMT is set.
	 */
2339 2340
	if (hci_dev_test_flag(hdev, HCI_MGMT) &&
	    !hci_dev_test_flag(hdev, HCI_CONNECTABLE) &&
2341 2342 2343 2344
	    !hci_bdaddr_list_lookup(&hdev->whitelist, &ev->bdaddr,
				    BDADDR_BREDR)) {
		    hci_reject_conn(hdev, &ev->bdaddr);
		    return;
2345
	}
L
Linus Torvalds 已提交
2346

2347
	/* Connection accepted */
2348

2349 2350 2351 2352 2353
	hci_dev_lock(hdev);

	ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
	if (ie)
		memcpy(ie->data.dev_class, ev->dev_class, 3);
2354

2355 2356 2357
	conn = hci_conn_hash_lookup_ba(hdev, ev->link_type,
			&ev->bdaddr);
	if (!conn) {
2358 2359
		conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr,
				    HCI_ROLE_SLAVE);
2360
		if (!conn) {
2361 2362 2363
			BT_ERR("No memory for new connection");
			hci_dev_unlock(hdev);
			return;
L
Linus Torvalds 已提交
2364
		}
2365
	}
2366

2367
	memcpy(conn->dev_class, ev->dev_class, 3);
2368

2369
	hci_dev_unlock(hdev);
L
Linus Torvalds 已提交
2370

2371 2372 2373 2374
	if (ev->link_type == ACL_LINK ||
	    (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) {
		struct hci_cp_accept_conn_req cp;
		conn->state = BT_CONNECT;
L
Linus Torvalds 已提交
2375

2376
		bacpy(&cp.bdaddr, &ev->bdaddr);
2377

2378 2379 2380 2381
		if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER))
			cp.role = 0x00; /* Become master */
		else
			cp.role = 0x01; /* Remain slave */
2382

2383 2384 2385 2386
		hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp);
	} else if (!(flags & HCI_PROTO_DEFER)) {
		struct hci_cp_accept_sync_conn_req cp;
		conn->state = BT_CONNECT;
2387

2388 2389
		bacpy(&cp.bdaddr, &ev->bdaddr);
		cp.pkt_type = cpu_to_le16(conn->pkt_type);
2390

2391 2392 2393 2394 2395
		cp.tx_bandwidth   = cpu_to_le32(0x00001f40);
		cp.rx_bandwidth   = cpu_to_le32(0x00001f40);
		cp.max_latency    = cpu_to_le16(0xffff);
		cp.content_format = cpu_to_le16(hdev->voice_setting);
		cp.retrans_effort = 0xff;
L
Linus Torvalds 已提交
2396

2397 2398
		hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp),
			     &cp);
2399
	} else {
2400
		conn->state = BT_CONNECT2;
2401
		hci_connect_cfm(conn, 0);
L
Linus Torvalds 已提交
2402 2403 2404
	}
}

2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420
static u8 hci_to_mgmt_reason(u8 err)
{
	switch (err) {
	case HCI_ERROR_CONNECTION_TIMEOUT:
		return MGMT_DEV_DISCONN_TIMEOUT;
	case HCI_ERROR_REMOTE_USER_TERM:
	case HCI_ERROR_REMOTE_LOW_RESOURCES:
	case HCI_ERROR_REMOTE_POWER_OFF:
		return MGMT_DEV_DISCONN_REMOTE;
	case HCI_ERROR_LOCAL_HOST_TERM:
		return MGMT_DEV_DISCONN_LOCAL_HOST;
	default:
		return MGMT_DEV_DISCONN_UNKNOWN;
	}
}

2421
static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
2422
{
2423
	struct hci_ev_disconn_complete *ev = (void *) skb->data;
2424
	u8 reason = hci_to_mgmt_reason(ev->reason);
2425
	struct hci_conn_params *params;
2426
	struct hci_conn *conn;
2427
	bool mgmt_connected;
2428
	u8 type;
2429

2430
	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2431 2432 2433 2434

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2435 2436
	if (!conn)
		goto unlock;
2437

2438 2439 2440 2441
	if (ev->status) {
		mgmt_disconnect_failed(hdev, &conn->dst, conn->type,
				       conn->dst_type, ev->status);
		goto unlock;
2442
	}
2443

2444 2445
	conn->state = BT_CLOSED;

2446 2447 2448
	mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags);
	mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type,
				reason, mgmt_connected);
2449

2450 2451 2452 2453
	if (conn->type == ACL_LINK) {
		if (test_bit(HCI_CONN_FLUSH_KEY, &conn->flags))
			hci_remove_link_key(hdev, &conn->dst);

2454
		hci_update_page_scan(hdev);
2455
	}
2456

2457 2458 2459 2460 2461 2462 2463 2464
	params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
	if (params) {
		switch (params->auto_connect) {
		case HCI_AUTO_CONN_LINK_LOSS:
			if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT)
				break;
			/* Fall through */

2465
		case HCI_AUTO_CONN_DIRECT:
2466
		case HCI_AUTO_CONN_ALWAYS:
2467 2468 2469
			list_del_init(&params->action);
			list_add(&params->action, &hdev->pend_le_conns);
			hci_update_background_scan(hdev);
2470 2471 2472 2473 2474 2475 2476
			break;

		default:
			break;
		}
	}

2477
	type = conn->type;
2478

2479
	hci_disconn_cfm(conn, ev->reason);
2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493
	hci_conn_del(conn);

	/* Re-enable advertising if necessary, since it might
	 * have been disabled by the connection. From the
	 * HCI_LE_Set_Advertise_Enable command description in
	 * the core specification (v4.0):
	 * "The Controller shall continue advertising until the Host
	 * issues an LE_Set_Advertise_Enable command with
	 * Advertising_Enable set to 0x00 (Advertising is disabled)
	 * or until a connection is created or until the Advertising
	 * is timed out due to Directed Advertising."
	 */
	if (type == LE_LINK)
		mgmt_reenable_advertising(hdev);
2494 2495

unlock:
2496 2497 2498
	hci_dev_unlock(hdev);
}

2499
static void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
L
Linus Torvalds 已提交
2500
{
2501
	struct hci_ev_auth_complete *ev = (void *) skb->data;
2502
	struct hci_conn *conn;
L
Linus Torvalds 已提交
2503

2504
	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
L
Linus Torvalds 已提交
2505 2506 2507

	hci_dev_lock(hdev);

2508
	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2509 2510 2511 2512
	if (!conn)
		goto unlock;

	if (!ev->status) {
2513
		if (!hci_conn_ssp_enabled(conn) &&
2514
		    test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) {
2515
			BT_INFO("re-auth of legacy device is not possible.");
2516
		} else {
2517
			set_bit(HCI_CONN_AUTH, &conn->flags);
2518
			conn->sec_level = conn->pending_sec_level;
2519
		}
2520
	} else {
2521
		mgmt_auth_failed(conn, ev->status);
2522
	}
L
Linus Torvalds 已提交
2523

2524 2525
	clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
	clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags);
L
Linus Torvalds 已提交
2526

2527
	if (conn->state == BT_CONFIG) {
2528
		if (!ev->status && hci_conn_ssp_enabled(conn)) {
2529 2530 2531 2532
			struct hci_cp_set_conn_encrypt cp;
			cp.handle  = ev->handle;
			cp.encrypt = 0x01;
			hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
2533
				     &cp);
2534
		} else {
2535
			conn->state = BT_CONNECTED;
2536
			hci_connect_cfm(conn, ev->status);
2537
			hci_conn_drop(conn);
2538
		}
2539 2540
	} else {
		hci_auth_cfm(conn, ev->status);
2541

2542 2543
		hci_conn_hold(conn);
		conn->disc_timeout = HCI_DISCONN_TIMEOUT;
2544
		hci_conn_drop(conn);
2545 2546
	}

2547
	if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) {
2548 2549 2550 2551 2552
		if (!ev->status) {
			struct hci_cp_set_conn_encrypt cp;
			cp.handle  = ev->handle;
			cp.encrypt = 0x01;
			hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp),
2553
				     &cp);
2554
		} else {
2555
			clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
2556
			hci_encrypt_cfm(conn, ev->status, 0x00);
L
Linus Torvalds 已提交
2557 2558 2559
		}
	}

2560
unlock:
L
Linus Torvalds 已提交
2561 2562 2563
	hci_dev_unlock(hdev);
}

2564
static void hci_remote_name_evt(struct hci_dev *hdev, struct sk_buff *skb)
L
Linus Torvalds 已提交
2565
{
2566 2567 2568
	struct hci_ev_remote_name *ev = (void *) skb->data;
	struct hci_conn *conn;

2569
	BT_DBG("%s", hdev->name);
L
Linus Torvalds 已提交
2570

2571
	hci_conn_check_pending(hdev);
2572 2573 2574

	hci_dev_lock(hdev);

2575
	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
2576

2577
	if (!hci_dev_test_flag(hdev, HCI_MGMT))
2578
		goto check_auth;
2579

2580 2581
	if (ev->status == 0)
		hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name,
2582
				       strnlen(ev->name, HCI_MAX_NAME_LENGTH));
2583 2584 2585 2586
	else
		hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0);

check_auth:
2587 2588 2589 2590 2591 2592
	if (!conn)
		goto unlock;

	if (!hci_outgoing_auth_needed(hdev, conn))
		goto unlock;

2593
	if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) {
2594
		struct hci_cp_auth_requested cp;
2595 2596 2597

		set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags);

2598 2599 2600 2601
		cp.handle = __cpu_to_le16(conn->handle);
		hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
	}

2602
unlock:
2603
	hci_dev_unlock(hdev);
2604 2605
}

2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663
static void read_enc_key_size_complete(struct hci_dev *hdev, u8 status,
				       u16 opcode, struct sk_buff *skb)
{
	const struct hci_rp_read_enc_key_size *rp;
	struct hci_conn *conn;
	u16 handle;

	BT_DBG("%s status 0x%02x", hdev->name, status);

	if (!skb || skb->len < sizeof(*rp)) {
		BT_ERR("%s invalid HCI Read Encryption Key Size response",
		       hdev->name);
		return;
	}

	rp = (void *)skb->data;
	handle = le16_to_cpu(rp->handle);

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, handle);
	if (!conn)
		goto unlock;

	/* If we fail to read the encryption key size, assume maximum
	 * (which is the same we do also when this HCI command isn't
	 * supported.
	 */
	if (rp->status) {
		BT_ERR("%s failed to read key size for handle %u", hdev->name,
		       handle);
		conn->enc_key_size = HCI_LINK_KEY_SIZE;
	} else {
		conn->enc_key_size = rp->key_size;
	}

	if (conn->state == BT_CONFIG) {
		conn->state = BT_CONNECTED;
		hci_connect_cfm(conn, 0);
		hci_conn_drop(conn);
	} else {
		u8 encrypt;

		if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
			encrypt = 0x00;
		else if (conn->type == ACL_LINK &&
			 test_bit(HCI_CONN_AES_CCM, &conn->flags))
			encrypt = 0x02;
		else
			encrypt = 0x01;

		hci_encrypt_cfm(conn, 0, encrypt);
	}

unlock:
	hci_dev_unlock(hdev);
}

2664
static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
2665 2666 2667 2668
{
	struct hci_ev_encrypt_change *ev = (void *) skb->data;
	struct hci_conn *conn;

2669
	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
L
Linus Torvalds 已提交
2670 2671 2672

	hci_dev_lock(hdev);

2673
	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2674 2675
	if (!conn)
		goto unlock;
L
Linus Torvalds 已提交
2676

2677 2678 2679
	if (!ev->status) {
		if (ev->encrypt) {
			/* Encryption implies authentication */
2680 2681
			set_bit(HCI_CONN_AUTH, &conn->flags);
			set_bit(HCI_CONN_ENCRYPT, &conn->flags);
2682
			conn->sec_level = conn->pending_sec_level;
2683

2684 2685
			/* P-256 authentication key implies FIPS */
			if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256)
2686
				set_bit(HCI_CONN_FIPS, &conn->flags);
2687

2688 2689 2690 2691
			if ((conn->type == ACL_LINK && ev->encrypt == 0x02) ||
			    conn->type == LE_LINK)
				set_bit(HCI_CONN_AES_CCM, &conn->flags);
		} else {
2692
			clear_bit(HCI_CONN_ENCRYPT, &conn->flags);
2693 2694
			clear_bit(HCI_CONN_AES_CCM, &conn->flags);
		}
2695
	}
2696

2697 2698 2699 2700
	/* We should disregard the current RPA and generate a new one
	 * whenever the encryption procedure fails.
	 */
	if (ev->status && conn->type == LE_LINK)
2701
		hci_dev_set_flag(hdev, HCI_RPA_EXPIRED);
2702

2703
	clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);
2704

2705 2706 2707 2708
	if (ev->status && conn->state == BT_CONNECTED) {
		hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
		hci_conn_drop(conn);
		goto unlock;
L
Linus Torvalds 已提交
2709 2710
	}

2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722
	/* In Secure Connections Only mode, do not allow any connections
	 * that are not encrypted with AES-CCM using a P-256 authenticated
	 * combination key.
	 */
	if (hci_dev_test_flag(hdev, HCI_SC_ONLY) &&
	    (!test_bit(HCI_CONN_AES_CCM, &conn->flags) ||
	     conn->key_type != HCI_LK_AUTH_COMBINATION_P256)) {
		hci_connect_cfm(conn, HCI_ERROR_AUTH_FAILURE);
		hci_conn_drop(conn);
		goto unlock;
	}

2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751
	/* Try reading the encryption key size for encrypted ACL links */
	if (!ev->status && ev->encrypt && conn->type == ACL_LINK) {
		struct hci_cp_read_enc_key_size cp;
		struct hci_request req;

		/* Only send HCI_Read_Encryption_Key_Size if the
		 * controller really supports it. If it doesn't, assume
		 * the default size (16).
		 */
		if (!(hdev->commands[20] & 0x10)) {
			conn->enc_key_size = HCI_LINK_KEY_SIZE;
			goto notify;
		}

		hci_req_init(&req, hdev);

		cp.handle = cpu_to_le16(conn->handle);
		hci_req_add(&req, HCI_OP_READ_ENC_KEY_SIZE, sizeof(cp), &cp);

		if (hci_req_run_skb(&req, read_enc_key_size_complete)) {
			BT_ERR("Sending HCI Read Encryption Key Size failed");
			conn->enc_key_size = HCI_LINK_KEY_SIZE;
			goto notify;
		}

		goto unlock;
	}

notify:
2752 2753 2754 2755
	if (conn->state == BT_CONFIG) {
		if (!ev->status)
			conn->state = BT_CONNECTED;

2756
		hci_connect_cfm(conn, ev->status);
2757 2758 2759 2760
		hci_conn_drop(conn);
	} else
		hci_encrypt_cfm(conn, ev->status, ev->encrypt);

2761
unlock:
L
Linus Torvalds 已提交
2762 2763 2764
	hci_dev_unlock(hdev);
}

2765 2766
static void hci_change_link_key_complete_evt(struct hci_dev *hdev,
					     struct sk_buff *skb)
L
Linus Torvalds 已提交
2767
{
2768
	struct hci_ev_change_link_key_complete *ev = (void *) skb->data;
2769
	struct hci_conn *conn;
L
Linus Torvalds 已提交
2770

2771
	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
L
Linus Torvalds 已提交
2772 2773 2774

	hci_dev_lock(hdev);

2775
	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
L
Linus Torvalds 已提交
2776 2777
	if (conn) {
		if (!ev->status)
2778
			set_bit(HCI_CONN_SECURE, &conn->flags);
L
Linus Torvalds 已提交
2779

2780
		clear_bit(HCI_CONN_AUTH_PEND, &conn->flags);
L
Linus Torvalds 已提交
2781 2782 2783 2784 2785 2786 2787

		hci_key_change_cfm(conn, ev->status);
	}

	hci_dev_unlock(hdev);
}

2788 2789
static void hci_remote_features_evt(struct hci_dev *hdev,
				    struct sk_buff *skb)
L
Linus Torvalds 已提交
2790
{
2791 2792 2793
	struct hci_ev_remote_features *ev = (void *) skb->data;
	struct hci_conn *conn;

2794
	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
2795 2796 2797 2798

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
2799 2800
	if (!conn)
		goto unlock;
2801

2802
	if (!ev->status)
2803
		memcpy(conn->features[0], ev->features, 8);
2804 2805 2806 2807

	if (conn->state != BT_CONFIG)
		goto unlock;

2808 2809
	if (!ev->status && lmp_ext_feat_capable(hdev) &&
	    lmp_ext_feat_capable(conn)) {
2810 2811 2812 2813
		struct hci_cp_read_remote_ext_features cp;
		cp.handle = ev->handle;
		cp.page = 0x01;
		hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES,
2814
			     sizeof(cp), &cp);
2815 2816 2817
		goto unlock;
	}

2818
	if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
2819 2820 2821 2822 2823
		struct hci_cp_remote_name_req cp;
		memset(&cp, 0, sizeof(cp));
		bacpy(&cp.bdaddr, &conn->dst);
		cp.pscan_rep_mode = 0x02;
		hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
2824
	} else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
2825
		mgmt_device_connected(hdev, conn, 0, NULL, 0);
2826

2827
	if (!hci_outgoing_auth_needed(hdev, conn)) {
2828
		conn->state = BT_CONNECTED;
2829
		hci_connect_cfm(conn, ev->status);
2830
		hci_conn_drop(conn);
2831
	}
2832

2833
unlock:
2834
	hci_dev_unlock(hdev);
L
Linus Torvalds 已提交
2835 2836
}

2837 2838 2839 2840
static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb,
				 u16 *opcode, u8 *status,
				 hci_req_complete_t *req_complete,
				 hci_req_complete_skb_t *req_complete_skb)
2841 2842 2843
{
	struct hci_ev_cmd_complete *ev = (void *) skb->data;

2844 2845
	*opcode = __le16_to_cpu(ev->opcode);
	*status = skb->data[sizeof(*ev)];
2846

2847
	skb_pull(skb, sizeof(*ev));
2848

2849
	switch (*opcode) {
2850 2851 2852 2853
	case HCI_OP_INQUIRY_CANCEL:
		hci_cc_inquiry_cancel(hdev, skb);
		break;

2854 2855 2856 2857
	case HCI_OP_PERIODIC_INQ:
		hci_cc_periodic_inq(hdev, skb);
		break;

2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869
	case HCI_OP_EXIT_PERIODIC_INQ:
		hci_cc_exit_periodic_inq(hdev, skb);
		break;

	case HCI_OP_REMOTE_NAME_REQ_CANCEL:
		hci_cc_remote_name_req_cancel(hdev, skb);
		break;

	case HCI_OP_ROLE_DISCOVERY:
		hci_cc_role_discovery(hdev, skb);
		break;

2870 2871 2872 2873
	case HCI_OP_READ_LINK_POLICY:
		hci_cc_read_link_policy(hdev, skb);
		break;

2874 2875 2876 2877
	case HCI_OP_WRITE_LINK_POLICY:
		hci_cc_write_link_policy(hdev, skb);
		break;

2878 2879 2880 2881 2882 2883 2884 2885
	case HCI_OP_READ_DEF_LINK_POLICY:
		hci_cc_read_def_link_policy(hdev, skb);
		break;

	case HCI_OP_WRITE_DEF_LINK_POLICY:
		hci_cc_write_def_link_policy(hdev, skb);
		break;

2886 2887 2888 2889
	case HCI_OP_RESET:
		hci_cc_reset(hdev, skb);
		break;

2890 2891 2892 2893
	case HCI_OP_READ_STORED_LINK_KEY:
		hci_cc_read_stored_link_key(hdev, skb);
		break;

2894 2895 2896 2897
	case HCI_OP_DELETE_STORED_LINK_KEY:
		hci_cc_delete_stored_link_key(hdev, skb);
		break;

2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933
	case HCI_OP_WRITE_LOCAL_NAME:
		hci_cc_write_local_name(hdev, skb);
		break;

	case HCI_OP_READ_LOCAL_NAME:
		hci_cc_read_local_name(hdev, skb);
		break;

	case HCI_OP_WRITE_AUTH_ENABLE:
		hci_cc_write_auth_enable(hdev, skb);
		break;

	case HCI_OP_WRITE_ENCRYPT_MODE:
		hci_cc_write_encrypt_mode(hdev, skb);
		break;

	case HCI_OP_WRITE_SCAN_ENABLE:
		hci_cc_write_scan_enable(hdev, skb);
		break;

	case HCI_OP_READ_CLASS_OF_DEV:
		hci_cc_read_class_of_dev(hdev, skb);
		break;

	case HCI_OP_WRITE_CLASS_OF_DEV:
		hci_cc_write_class_of_dev(hdev, skb);
		break;

	case HCI_OP_READ_VOICE_SETTING:
		hci_cc_read_voice_setting(hdev, skb);
		break;

	case HCI_OP_WRITE_VOICE_SETTING:
		hci_cc_write_voice_setting(hdev, skb);
		break;

2934 2935 2936 2937
	case HCI_OP_READ_NUM_SUPPORTED_IAC:
		hci_cc_read_num_supported_iac(hdev, skb);
		break;

2938 2939 2940 2941
	case HCI_OP_WRITE_SSP_MODE:
		hci_cc_write_ssp_mode(hdev, skb);
		break;

2942 2943 2944 2945
	case HCI_OP_WRITE_SC_SUPPORT:
		hci_cc_write_sc_support(hdev, skb);
		break;

2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957
	case HCI_OP_READ_LOCAL_VERSION:
		hci_cc_read_local_version(hdev, skb);
		break;

	case HCI_OP_READ_LOCAL_COMMANDS:
		hci_cc_read_local_commands(hdev, skb);
		break;

	case HCI_OP_READ_LOCAL_FEATURES:
		hci_cc_read_local_features(hdev, skb);
		break;

2958 2959 2960 2961
	case HCI_OP_READ_LOCAL_EXT_FEATURES:
		hci_cc_read_local_ext_features(hdev, skb);
		break;

2962 2963 2964 2965 2966 2967 2968 2969
	case HCI_OP_READ_BUFFER_SIZE:
		hci_cc_read_buffer_size(hdev, skb);
		break;

	case HCI_OP_READ_BD_ADDR:
		hci_cc_read_bd_addr(hdev, skb);
		break;

2970 2971 2972 2973
	case HCI_OP_READ_PAGE_SCAN_ACTIVITY:
		hci_cc_read_page_scan_activity(hdev, skb);
		break;

2974 2975 2976 2977
	case HCI_OP_WRITE_PAGE_SCAN_ACTIVITY:
		hci_cc_write_page_scan_activity(hdev, skb);
		break;

2978 2979 2980 2981
	case HCI_OP_READ_PAGE_SCAN_TYPE:
		hci_cc_read_page_scan_type(hdev, skb);
		break;

2982 2983 2984 2985
	case HCI_OP_WRITE_PAGE_SCAN_TYPE:
		hci_cc_write_page_scan_type(hdev, skb);
		break;

2986 2987 2988 2989
	case HCI_OP_READ_DATA_BLOCK_SIZE:
		hci_cc_read_data_block_size(hdev, skb);
		break;

2990 2991 2992 2993
	case HCI_OP_READ_FLOW_CONTROL_MODE:
		hci_cc_read_flow_control_mode(hdev, skb);
		break;

2994 2995 2996 2997
	case HCI_OP_READ_LOCAL_AMP_INFO:
		hci_cc_read_local_amp_info(hdev, skb);
		break;

2998 2999 3000 3001
	case HCI_OP_READ_CLOCK:
		hci_cc_read_clock(hdev, skb);
		break;

3002 3003 3004 3005
	case HCI_OP_READ_LOCAL_AMP_ASSOC:
		hci_cc_read_local_amp_assoc(hdev, skb);
		break;

3006 3007 3008 3009
	case HCI_OP_READ_INQ_RSP_TX_POWER:
		hci_cc_read_inq_rsp_tx_power(hdev, skb);
		break;

3010 3011 3012 3013 3014 3015 3016 3017
	case HCI_OP_PIN_CODE_REPLY:
		hci_cc_pin_code_reply(hdev, skb);
		break;

	case HCI_OP_PIN_CODE_NEG_REPLY:
		hci_cc_pin_code_neg_reply(hdev, skb);
		break;

3018
	case HCI_OP_READ_LOCAL_OOB_DATA:
3019 3020 3021 3022 3023
		hci_cc_read_local_oob_data(hdev, skb);
		break;

	case HCI_OP_READ_LOCAL_OOB_EXT_DATA:
		hci_cc_read_local_oob_ext_data(hdev, skb);
3024 3025
		break;

3026 3027 3028 3029
	case HCI_OP_LE_READ_BUFFER_SIZE:
		hci_cc_le_read_buffer_size(hdev, skb);
		break;

3030 3031 3032 3033
	case HCI_OP_LE_READ_LOCAL_FEATURES:
		hci_cc_le_read_local_features(hdev, skb);
		break;

3034 3035 3036 3037
	case HCI_OP_LE_READ_ADV_TX_POWER:
		hci_cc_le_read_adv_tx_power(hdev, skb);
		break;

3038 3039 3040 3041 3042 3043 3044 3045
	case HCI_OP_USER_CONFIRM_REPLY:
		hci_cc_user_confirm_reply(hdev, skb);
		break;

	case HCI_OP_USER_CONFIRM_NEG_REPLY:
		hci_cc_user_confirm_neg_reply(hdev, skb);
		break;

3046 3047 3048 3049 3050 3051
	case HCI_OP_USER_PASSKEY_REPLY:
		hci_cc_user_passkey_reply(hdev, skb);
		break;

	case HCI_OP_USER_PASSKEY_NEG_REPLY:
		hci_cc_user_passkey_neg_reply(hdev, skb);
3052
		break;
3053

3054 3055 3056 3057
	case HCI_OP_LE_SET_RANDOM_ADDR:
		hci_cc_le_set_random_addr(hdev, skb);
		break;

3058 3059 3060 3061
	case HCI_OP_LE_SET_ADV_ENABLE:
		hci_cc_le_set_adv_enable(hdev, skb);
		break;

3062 3063 3064 3065
	case HCI_OP_LE_SET_SCAN_PARAM:
		hci_cc_le_set_scan_param(hdev, skb);
		break;

3066 3067 3068 3069
	case HCI_OP_LE_SET_SCAN_ENABLE:
		hci_cc_le_set_scan_enable(hdev, skb);
		break;

3070 3071 3072 3073
	case HCI_OP_LE_READ_WHITE_LIST_SIZE:
		hci_cc_le_read_white_list_size(hdev, skb);
		break;

3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085
	case HCI_OP_LE_CLEAR_WHITE_LIST:
		hci_cc_le_clear_white_list(hdev, skb);
		break;

	case HCI_OP_LE_ADD_TO_WHITE_LIST:
		hci_cc_le_add_to_white_list(hdev, skb);
		break;

	case HCI_OP_LE_DEL_FROM_WHITE_LIST:
		hci_cc_le_del_from_white_list(hdev, skb);
		break;

3086 3087 3088 3089
	case HCI_OP_LE_READ_SUPPORTED_STATES:
		hci_cc_le_read_supported_states(hdev, skb);
		break;

3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101
	case HCI_OP_LE_READ_DEF_DATA_LEN:
		hci_cc_le_read_def_data_len(hdev, skb);
		break;

	case HCI_OP_LE_WRITE_DEF_DATA_LEN:
		hci_cc_le_write_def_data_len(hdev, skb);
		break;

	case HCI_OP_LE_READ_MAX_DATA_LEN:
		hci_cc_le_read_max_data_len(hdev, skb);
		break;

3102 3103 3104 3105
	case HCI_OP_WRITE_LE_HOST_SUPPORTED:
		hci_cc_write_le_host_supported(hdev, skb);
		break;

3106 3107 3108 3109
	case HCI_OP_LE_SET_ADV_PARAM:
		hci_cc_set_adv_param(hdev, skb);
		break;

3110 3111 3112 3113
	case HCI_OP_WRITE_REMOTE_AMP_ASSOC:
		hci_cc_write_remote_amp_assoc(hdev, skb);
		break;

3114 3115 3116 3117
	case HCI_OP_READ_RSSI:
		hci_cc_read_rssi(hdev, skb);
		break;

3118 3119 3120 3121
	case HCI_OP_READ_TX_POWER:
		hci_cc_read_tx_power(hdev, skb);
		break;

3122 3123 3124 3125
	case HCI_OP_WRITE_SSP_DEBUG_MODE:
		hci_cc_write_ssp_debug_mode(hdev, skb);
		break;

3126
	default:
3127
		BT_DBG("%s opcode 0x%4.4x", hdev->name, *opcode);
3128 3129 3130
		break;
	}

3131
	if (*opcode != HCI_OP_NOP)
3132
		cancel_delayed_work(&hdev->cmd_timer);
3133

3134 3135 3136
	if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags))
		atomic_set(&hdev->cmd_cnt, 1);

3137 3138
	hci_req_cmd_complete(hdev, *opcode, *status, req_complete,
			     req_complete_skb);
3139

3140 3141
	if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
		queue_work(hdev->workqueue, &hdev->cmd_work);
3142 3143
}

3144 3145 3146 3147
static void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb,
			       u16 *opcode, u8 *status,
			       hci_req_complete_t *req_complete,
			       hci_req_complete_skb_t *req_complete_skb)
3148 3149 3150 3151 3152
{
	struct hci_ev_cmd_status *ev = (void *) skb->data;

	skb_pull(skb, sizeof(*ev));

3153 3154
	*opcode = __le16_to_cpu(ev->opcode);
	*status = ev->status;
3155

3156
	switch (*opcode) {
3157 3158 3159 3160 3161 3162 3163 3164
	case HCI_OP_INQUIRY:
		hci_cs_inquiry(hdev, ev->status);
		break;

	case HCI_OP_CREATE_CONN:
		hci_cs_create_conn(hdev, ev->status);
		break;

3165 3166 3167 3168
	case HCI_OP_DISCONNECT:
		hci_cs_disconnect(hdev, ev->status);
		break;

3169 3170 3171 3172
	case HCI_OP_ADD_SCO:
		hci_cs_add_sco(hdev, ev->status);
		break;

3173 3174 3175 3176 3177 3178 3179 3180
	case HCI_OP_AUTH_REQUESTED:
		hci_cs_auth_requested(hdev, ev->status);
		break;

	case HCI_OP_SET_CONN_ENCRYPT:
		hci_cs_set_conn_encrypt(hdev, ev->status);
		break;

3181 3182 3183 3184
	case HCI_OP_REMOTE_NAME_REQ:
		hci_cs_remote_name_req(hdev, ev->status);
		break;

3185 3186 3187 3188 3189 3190 3191 3192
	case HCI_OP_READ_REMOTE_FEATURES:
		hci_cs_read_remote_features(hdev, ev->status);
		break;

	case HCI_OP_READ_REMOTE_EXT_FEATURES:
		hci_cs_read_remote_ext_features(hdev, ev->status);
		break;

3193 3194 3195 3196
	case HCI_OP_SETUP_SYNC_CONN:
		hci_cs_setup_sync_conn(hdev, ev->status);
		break;

3197 3198 3199 3200 3201 3202 3203 3204
	case HCI_OP_CREATE_PHY_LINK:
		hci_cs_create_phylink(hdev, ev->status);
		break;

	case HCI_OP_ACCEPT_PHY_LINK:
		hci_cs_accept_phylink(hdev, ev->status);
		break;

3205 3206 3207 3208 3209 3210 3211 3212
	case HCI_OP_SNIFF_MODE:
		hci_cs_sniff_mode(hdev, ev->status);
		break;

	case HCI_OP_EXIT_SNIFF_MODE:
		hci_cs_exit_sniff_mode(hdev, ev->status);
		break;

3213 3214 3215 3216
	case HCI_OP_SWITCH_ROLE:
		hci_cs_switch_role(hdev, ev->status);
		break;

3217 3218 3219 3220
	case HCI_OP_LE_CREATE_CONN:
		hci_cs_le_create_conn(hdev, ev->status);
		break;

3221 3222 3223 3224
	case HCI_OP_LE_READ_REMOTE_FEATURES:
		hci_cs_le_read_remote_features(hdev, ev->status);
		break;

3225 3226 3227 3228
	case HCI_OP_LE_START_ENC:
		hci_cs_le_start_enc(hdev, ev->status);
		break;

3229
	default:
3230
		BT_DBG("%s opcode 0x%4.4x", hdev->name, *opcode);
3231 3232 3233
		break;
	}

3234
	if (*opcode != HCI_OP_NOP)
3235
		cancel_delayed_work(&hdev->cmd_timer);
3236

3237 3238 3239
	if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags))
		atomic_set(&hdev->cmd_cnt, 1);

3240 3241 3242 3243 3244 3245
	/* Indicate request completion if the command failed. Also, if
	 * we're not waiting for a special event and we get a success
	 * command status we should try to flag the request as completed
	 * (since for this kind of commands there will not be a command
	 * complete event).
	 */
3246
	if (ev->status ||
3247
	    (hdev->sent_cmd && !bt_cb(hdev->sent_cmd)->req.event))
3248 3249
		hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete,
				     req_complete_skb);
3250

3251 3252
	if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q))
		queue_work(hdev->workqueue, &hdev->cmd_work);
3253 3254
}

3255 3256 3257 3258
static void hci_hardware_error_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_hardware_error *ev = (void *) skb->data;

3259 3260 3261
	hdev->hw_error_code = ev->code;

	queue_work(hdev->req_workqueue, &hdev->error_reset);
3262 3263
}

3264
static void hci_role_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3265 3266 3267 3268
{
	struct hci_ev_role_change *ev = (void *) skb->data;
	struct hci_conn *conn;

3269
	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3270 3271 3272 3273 3274

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
	if (conn) {
3275 3276
		if (!ev->status)
			conn->role = ev->role;
3277

3278
		clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags);
3279 3280 3281 3282 3283 3284 3285

		hci_role_switch_cfm(conn, ev->status, ev->role);
	}

	hci_dev_unlock(hdev);
}

3286
static void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *skb)
3287 3288 3289 3290
{
	struct hci_ev_num_comp_pkts *ev = (void *) skb->data;
	int i;

3291 3292 3293 3294 3295
	if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) {
		BT_ERR("Wrong event for mode %d", hdev->flow_ctl_mode);
		return;
	}

3296
	if (skb->len < sizeof(*ev) || skb->len < sizeof(*ev) +
3297
	    ev->num_hndl * sizeof(struct hci_comp_pkts_info)) {
3298 3299 3300 3301
		BT_DBG("%s bad parameters", hdev->name);
		return;
	}

3302 3303
	BT_DBG("%s num_hndl %d", hdev->name, ev->num_hndl);

3304 3305
	for (i = 0; i < ev->num_hndl; i++) {
		struct hci_comp_pkts_info *info = &ev->handles[i];
3306 3307 3308
		struct hci_conn *conn;
		__u16  handle, count;

3309 3310
		handle = __le16_to_cpu(info->handle);
		count  = __le16_to_cpu(info->count);
3311 3312

		conn = hci_conn_hash_lookup_handle(hdev, handle);
3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330
		if (!conn)
			continue;

		conn->sent -= count;

		switch (conn->type) {
		case ACL_LINK:
			hdev->acl_cnt += count;
			if (hdev->acl_cnt > hdev->acl_pkts)
				hdev->acl_cnt = hdev->acl_pkts;
			break;

		case LE_LINK:
			if (hdev->le_pkts) {
				hdev->le_cnt += count;
				if (hdev->le_cnt > hdev->le_pkts)
					hdev->le_cnt = hdev->le_pkts;
			} else {
A
Andrei Emeltchenko 已提交
3331 3332
				hdev->acl_cnt += count;
				if (hdev->acl_cnt > hdev->acl_pkts)
3333 3334
					hdev->acl_cnt = hdev->acl_pkts;
			}
3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345
			break;

		case SCO_LINK:
			hdev->sco_cnt += count;
			if (hdev->sco_cnt > hdev->sco_pkts)
				hdev->sco_cnt = hdev->sco_pkts;
			break;

		default:
			BT_ERR("Unknown type %d conn %p", conn->type, conn);
			break;
3346 3347 3348
		}
	}

3349
	queue_work(hdev->workqueue, &hdev->tx_work);
3350 3351
}

3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372
static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev,
						 __u16 handle)
{
	struct hci_chan *chan;

	switch (hdev->dev_type) {
	case HCI_BREDR:
		return hci_conn_hash_lookup_handle(hdev, handle);
	case HCI_AMP:
		chan = hci_chan_lookup_handle(hdev, handle);
		if (chan)
			return chan->conn;
		break;
	default:
		BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type);
		break;
	}

	return NULL;
}

3373
static void hci_num_comp_blocks_evt(struct hci_dev *hdev, struct sk_buff *skb)
3374 3375 3376 3377 3378 3379 3380 3381 3382 3383
{
	struct hci_ev_num_comp_blocks *ev = (void *) skb->data;
	int i;

	if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) {
		BT_ERR("Wrong event for mode %d", hdev->flow_ctl_mode);
		return;
	}

	if (skb->len < sizeof(*ev) || skb->len < sizeof(*ev) +
3384
	    ev->num_hndl * sizeof(struct hci_comp_blocks_info)) {
3385 3386 3387 3388 3389
		BT_DBG("%s bad parameters", hdev->name);
		return;
	}

	BT_DBG("%s num_blocks %d num_hndl %d", hdev->name, ev->num_blocks,
3390
	       ev->num_hndl);
3391 3392 3393

	for (i = 0; i < ev->num_hndl; i++) {
		struct hci_comp_blocks_info *info = &ev->handles[i];
3394
		struct hci_conn *conn = NULL;
3395 3396 3397 3398 3399
		__u16  handle, block_count;

		handle = __le16_to_cpu(info->handle);
		block_count = __le16_to_cpu(info->blocks);

3400
		conn = __hci_conn_lookup_handle(hdev, handle);
3401 3402 3403 3404 3405 3406 3407
		if (!conn)
			continue;

		conn->sent -= block_count;

		switch (conn->type) {
		case ACL_LINK:
3408
		case AMP_LINK:
3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422
			hdev->block_cnt += block_count;
			if (hdev->block_cnt > hdev->num_blocks)
				hdev->block_cnt = hdev->num_blocks;
			break;

		default:
			BT_ERR("Unknown type %d conn %p", conn->type, conn);
			break;
		}
	}

	queue_work(hdev->workqueue, &hdev->tx_work);
}

3423
static void hci_mode_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3424
{
3425
	struct hci_ev_mode_change *ev = (void *) skb->data;
3426 3427
	struct hci_conn *conn;

3428
	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3429 3430 3431 3432

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3433 3434 3435
	if (conn) {
		conn->mode = ev->mode;

3436 3437
		if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND,
					&conn->flags)) {
3438
			if (conn->mode == HCI_CM_ACTIVE)
3439
				set_bit(HCI_CONN_POWER_SAVE, &conn->flags);
3440
			else
3441
				clear_bit(HCI_CONN_POWER_SAVE, &conn->flags);
3442
		}
3443

3444
		if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags))
3445
			hci_sco_setup(conn, ev->status);
3446 3447 3448 3449 3450
	}

	hci_dev_unlock(hdev);
}

3451
static void hci_pin_code_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3452
{
3453 3454 3455
	struct hci_ev_pin_code_req *ev = (void *) skb->data;
	struct hci_conn *conn;

3456
	BT_DBG("%s", hdev->name);
3457 3458 3459 3460

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3461 3462 3463 3464
	if (!conn)
		goto unlock;

	if (conn->state == BT_CONNECTED) {
3465 3466
		hci_conn_hold(conn);
		conn->disc_timeout = HCI_PAIRING_TIMEOUT;
3467
		hci_conn_drop(conn);
3468 3469
	}

3470
	if (!hci_dev_test_flag(hdev, HCI_BONDABLE) &&
3471
	    !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) {
3472
		hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY,
3473
			     sizeof(ev->bdaddr), &ev->bdaddr);
3474
	} else if (hci_dev_test_flag(hdev, HCI_MGMT)) {
3475 3476 3477 3478 3479 3480 3481
		u8 secure;

		if (conn->pending_sec_level == BT_SECURITY_HIGH)
			secure = 1;
		else
			secure = 0;

3482
		mgmt_pin_code_request(hdev, &ev->bdaddr, secure);
3483
	}
3484

3485
unlock:
3486
	hci_dev_unlock(hdev);
3487 3488
}

3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520
static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len)
{
	if (key_type == HCI_LK_CHANGED_COMBINATION)
		return;

	conn->pin_length = pin_len;
	conn->key_type = key_type;

	switch (key_type) {
	case HCI_LK_LOCAL_UNIT:
	case HCI_LK_REMOTE_UNIT:
	case HCI_LK_DEBUG_COMBINATION:
		return;
	case HCI_LK_COMBINATION:
		if (pin_len == 16)
			conn->pending_sec_level = BT_SECURITY_HIGH;
		else
			conn->pending_sec_level = BT_SECURITY_MEDIUM;
		break;
	case HCI_LK_UNAUTH_COMBINATION_P192:
	case HCI_LK_UNAUTH_COMBINATION_P256:
		conn->pending_sec_level = BT_SECURITY_MEDIUM;
		break;
	case HCI_LK_AUTH_COMBINATION_P192:
		conn->pending_sec_level = BT_SECURITY_HIGH;
		break;
	case HCI_LK_AUTH_COMBINATION_P256:
		conn->pending_sec_level = BT_SECURITY_FIPS;
		break;
	}
}

3521
static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
3522
{
3523 3524 3525 3526 3527
	struct hci_ev_link_key_req *ev = (void *) skb->data;
	struct hci_cp_link_key_reply cp;
	struct hci_conn *conn;
	struct link_key *key;

3528
	BT_DBG("%s", hdev->name);
3529

3530
	if (!hci_dev_test_flag(hdev, HCI_MGMT))
3531 3532 3533 3534 3535 3536
		return;

	hci_dev_lock(hdev);

	key = hci_find_link_key(hdev, &ev->bdaddr);
	if (!key) {
3537 3538
		BT_DBG("%s link key not found for %pMR", hdev->name,
		       &ev->bdaddr);
3539 3540 3541
		goto not_found;
	}

3542 3543
	BT_DBG("%s found key type %u for %pMR", hdev->name, key->type,
	       &ev->bdaddr);
3544 3545

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3546
	if (conn) {
3547 3548
		clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);

3549 3550
		if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 ||
		     key->type == HCI_LK_UNAUTH_COMBINATION_P256) &&
3551
		    conn->auth_type != 0xff && (conn->auth_type & 0x01)) {
3552 3553 3554
			BT_DBG("%s ignoring unauthenticated key", hdev->name);
			goto not_found;
		}
3555

3556
		if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 &&
3557 3558
		    (conn->pending_sec_level == BT_SECURITY_HIGH ||
		     conn->pending_sec_level == BT_SECURITY_FIPS)) {
3559 3560
			BT_DBG("%s ignoring key unauthenticated for high security",
			       hdev->name);
3561 3562 3563
			goto not_found;
		}

3564
		conn_set_key(conn, key->type, key->pin_len);
3565 3566 3567
	}

	bacpy(&cp.bdaddr, &ev->bdaddr);
3568
	memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE);
3569 3570 3571 3572 3573 3574 3575 3576 3577 3578

	hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp);

	hci_dev_unlock(hdev);

	return;

not_found:
	hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr);
	hci_dev_unlock(hdev);
3579 3580
}

3581
static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
3582
{
3583 3584
	struct hci_ev_link_key_notify *ev = (void *) skb->data;
	struct hci_conn *conn;
3585 3586
	struct link_key *key;
	bool persistent;
3587
	u8 pin_len = 0;
3588

3589
	BT_DBG("%s", hdev->name);
3590 3591 3592 3593

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
3594 3595 3596 3597 3598 3599 3600
	if (!conn)
		goto unlock;

	hci_conn_hold(conn);
	conn->disc_timeout = HCI_DISCONN_TIMEOUT;
	hci_conn_drop(conn);

3601
	set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags);
3602
	conn_set_key(conn, ev->key_type, conn->pin_length);
3603

3604
	if (!hci_dev_test_flag(hdev, HCI_MGMT))
3605 3606 3607 3608 3609 3610 3611
		goto unlock;

	key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key,
			        ev->key_type, pin_len, &persistent);
	if (!key)
		goto unlock;

3612 3613 3614 3615 3616 3617
	/* Update connection information since adding the key will have
	 * fixed up the type in the case of changed combination keys.
	 */
	if (ev->key_type == HCI_LK_CHANGED_COMBINATION)
		conn_set_key(conn, key->type, key->pin_len);

3618
	mgmt_new_link_key(hdev, key, persistent);
3619

3620 3621 3622 3623 3624 3625
	/* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag
	 * is set. If it's not set simply remove the key from the kernel
	 * list (we've still notified user space about it but with
	 * store_hint being 0).
	 */
	if (key->type == HCI_LK_DEBUG_COMBINATION &&
3626
	    !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) {
3627 3628
		list_del_rcu(&key->list);
		kfree_rcu(key, rcu);
3629
		goto unlock;
3630
	}
3631

3632 3633 3634 3635 3636
	if (persistent)
		clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags);
	else
		set_bit(HCI_CONN_FLUSH_KEY, &conn->flags);

3637
unlock:
3638
	hci_dev_unlock(hdev);
3639 3640
}

3641
static void hci_clock_offset_evt(struct hci_dev *hdev, struct sk_buff *skb)
L
Linus Torvalds 已提交
3642
{
3643
	struct hci_ev_clock_offset *ev = (void *) skb->data;
3644
	struct hci_conn *conn;
L
Linus Torvalds 已提交
3645

3646
	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
L
Linus Torvalds 已提交
3647 3648 3649

	hci_dev_lock(hdev);

3650
	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
L
Linus Torvalds 已提交
3651 3652 3653
	if (conn && !ev->status) {
		struct inquiry_entry *ie;

3654 3655
		ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
		if (ie) {
L
Linus Torvalds 已提交
3656 3657 3658 3659 3660 3661 3662 3663
			ie->data.clock_offset = ev->clock_offset;
			ie->timestamp = jiffies;
		}
	}

	hci_dev_unlock(hdev);
}

3664
static void hci_pkt_type_change_evt(struct hci_dev *hdev, struct sk_buff *skb)
3665 3666 3667 3668
{
	struct hci_ev_pkt_type_change *ev = (void *) skb->data;
	struct hci_conn *conn;

3669
	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3670 3671 3672 3673 3674 3675 3676 3677 3678 3679

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
	if (conn && !ev->status)
		conn->pkt_type = __le16_to_cpu(ev->pkt_type);

	hci_dev_unlock(hdev);
}

3680
static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, struct sk_buff *skb)
3681
{
3682
	struct hci_ev_pscan_rep_mode *ev = (void *) skb->data;
3683 3684 3685 3686 3687 3688
	struct inquiry_entry *ie;

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

	hci_dev_lock(hdev);

3689 3690
	ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
	if (ie) {
3691 3692 3693 3694 3695 3696 3697
		ie->data.pscan_rep_mode = ev->pscan_rep_mode;
		ie->timestamp = jiffies;
	}

	hci_dev_unlock(hdev);
}

3698 3699
static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev,
					     struct sk_buff *skb)
3700 3701 3702 3703 3704 3705 3706 3707 3708
{
	struct inquiry_data data;
	int num_rsp = *((__u8 *) skb->data);

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

	if (!num_rsp)
		return;

3709
	if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3710 3711
		return;

3712 3713 3714
	hci_dev_lock(hdev);

	if ((skb->len - 1) / num_rsp != sizeof(struct inquiry_info_with_rssi)) {
3715 3716
		struct inquiry_info_with_rssi_and_pscan_mode *info;
		info = (void *) (skb->data + 1);
3717

3718
		for (; num_rsp; num_rsp--, info++) {
3719 3720
			u32 flags;

3721 3722 3723 3724 3725 3726 3727
			bacpy(&data.bdaddr, &info->bdaddr);
			data.pscan_rep_mode	= info->pscan_rep_mode;
			data.pscan_period_mode	= info->pscan_period_mode;
			data.pscan_mode		= info->pscan_mode;
			memcpy(data.dev_class, info->dev_class, 3);
			data.clock_offset	= info->clock_offset;
			data.rssi		= info->rssi;
3728
			data.ssp_mode		= 0x00;
3729

3730 3731
			flags = hci_inquiry_cache_update(hdev, &data, false);

3732
			mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3733
					  info->dev_class, info->rssi,
3734
					  flags, NULL, 0, NULL, 0);
3735 3736 3737 3738
		}
	} else {
		struct inquiry_info_with_rssi *info = (void *) (skb->data + 1);

3739
		for (; num_rsp; num_rsp--, info++) {
3740 3741
			u32 flags;

3742 3743 3744 3745 3746 3747 3748
			bacpy(&data.bdaddr, &info->bdaddr);
			data.pscan_rep_mode	= info->pscan_rep_mode;
			data.pscan_period_mode	= info->pscan_period_mode;
			data.pscan_mode		= 0x00;
			memcpy(data.dev_class, info->dev_class, 3);
			data.clock_offset	= info->clock_offset;
			data.rssi		= info->rssi;
3749
			data.ssp_mode		= 0x00;
3750 3751 3752

			flags = hci_inquiry_cache_update(hdev, &data, false);

3753
			mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3754
					  info->dev_class, info->rssi,
3755
					  flags, NULL, 0, NULL, 0);
3756 3757 3758 3759 3760 3761
		}
	}

	hci_dev_unlock(hdev);
}

3762 3763
static void hci_remote_ext_features_evt(struct hci_dev *hdev,
					struct sk_buff *skb)
3764
{
3765 3766 3767
	struct hci_ev_remote_ext_features *ev = (void *) skb->data;
	struct hci_conn *conn;

3768
	BT_DBG("%s", hdev->name);
3769 3770 3771 3772

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
3773 3774
	if (!conn)
		goto unlock;
3775

3776 3777 3778
	if (ev->page < HCI_MAX_PAGES)
		memcpy(conn->features[ev->page], ev->features, 8);

3779 3780
	if (!ev->status && ev->page == 0x01) {
		struct inquiry_entry *ie;
3781

3782 3783
		ie = hci_inquiry_cache_lookup(hdev, &conn->dst);
		if (ie)
3784
			ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
3785

3786
		if (ev->features[0] & LMP_HOST_SSP) {
3787
			set_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798
		} else {
			/* It is mandatory by the Bluetooth specification that
			 * Extended Inquiry Results are only used when Secure
			 * Simple Pairing is enabled, but some devices violate
			 * this.
			 *
			 * To make these devices work, the internal SSP
			 * enabled flag needs to be cleared if the remote host
			 * features do not indicate SSP support */
			clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
		}
3799 3800 3801

		if (ev->features[0] & LMP_HOST_SC)
			set_bit(HCI_CONN_SC_ENABLED, &conn->flags);
3802 3803 3804 3805 3806
	}

	if (conn->state != BT_CONFIG)
		goto unlock;

3807
	if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) {
3808 3809 3810 3811 3812
		struct hci_cp_remote_name_req cp;
		memset(&cp, 0, sizeof(cp));
		bacpy(&cp.bdaddr, &conn->dst);
		cp.pscan_rep_mode = 0x02;
		hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp);
3813
	} else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
3814
		mgmt_device_connected(hdev, conn, 0, NULL, 0);
3815

3816
	if (!hci_outgoing_auth_needed(hdev, conn)) {
3817
		conn->state = BT_CONNECTED;
3818
		hci_connect_cfm(conn, ev->status);
3819
		hci_conn_drop(conn);
3820 3821
	}

3822
unlock:
3823
	hci_dev_unlock(hdev);
3824 3825
}

3826 3827
static void hci_sync_conn_complete_evt(struct hci_dev *hdev,
				       struct sk_buff *skb)
3828
{
3829 3830 3831
	struct hci_ev_sync_conn_complete *ev = (void *) skb->data;
	struct hci_conn *conn;

3832
	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
3833 3834 3835 3836

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
3837 3838 3839 3840 3841 3842 3843 3844 3845 3846
	if (!conn) {
		if (ev->link_type == ESCO_LINK)
			goto unlock;

		conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr);
		if (!conn)
			goto unlock;

		conn->type = SCO_LINK;
	}
3847

3848 3849
	switch (ev->status) {
	case 0x00:
3850 3851
		conn->handle = __le16_to_cpu(ev->handle);
		conn->state  = BT_CONNECTED;
3852

3853
		hci_debugfs_create_conn(conn);
3854
		hci_conn_add_sysfs(conn);
3855 3856
		break;

3857
	case 0x10:	/* Connection Accept Timeout */
3858
	case 0x0d:	/* Connection Rejected due to Limited Resources */
3859
	case 0x11:	/* Unsupported Feature or Parameter Value */
3860
	case 0x1c:	/* SCO interval rejected */
3861
	case 0x1a:	/* Unsupported Remote Feature */
3862
	case 0x1f:	/* Unspecified error */
3863
	case 0x20:	/* Unsupported LMP Parameter value */
3864
		if (conn->out) {
3865 3866
			conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) |
					(hdev->esco_type & EDR_ESCO_MASK);
3867 3868
			if (hci_setup_sync(conn, conn->link->handle))
				goto unlock;
3869 3870 3871 3872
		}
		/* fall through */

	default:
3873
		conn->state = BT_CLOSED;
3874 3875
		break;
	}
3876

3877
	hci_connect_cfm(conn, ev->status);
3878 3879 3880 3881 3882
	if (ev->status)
		hci_conn_del(conn);

unlock:
	hci_dev_unlock(hdev);
3883 3884
}

3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901
static inline size_t eir_get_length(u8 *eir, size_t eir_len)
{
	size_t parsed = 0;

	while (parsed < eir_len) {
		u8 field_len = eir[0];

		if (field_len == 0)
			return parsed;

		parsed += field_len + 1;
		eir += field_len + 1;
	}

	return eir_len;
}

3902 3903
static void hci_extended_inquiry_result_evt(struct hci_dev *hdev,
					    struct sk_buff *skb)
L
Linus Torvalds 已提交
3904
{
3905 3906 3907
	struct inquiry_data data;
	struct extended_inquiry_info *info = (void *) (skb->data + 1);
	int num_rsp = *((__u8 *) skb->data);
3908
	size_t eir_len;
L
Linus Torvalds 已提交
3909

3910
	BT_DBG("%s num_rsp %d", hdev->name, num_rsp);
L
Linus Torvalds 已提交
3911

3912 3913
	if (!num_rsp)
		return;
L
Linus Torvalds 已提交
3914

3915
	if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ))
3916 3917
		return;

3918 3919
	hci_dev_lock(hdev);

3920
	for (; num_rsp; num_rsp--, info++) {
3921 3922
		u32 flags;
		bool name_known;
3923

3924
		bacpy(&data.bdaddr, &info->bdaddr);
3925 3926 3927
		data.pscan_rep_mode	= info->pscan_rep_mode;
		data.pscan_period_mode	= info->pscan_period_mode;
		data.pscan_mode		= 0x00;
3928
		memcpy(data.dev_class, info->dev_class, 3);
3929 3930
		data.clock_offset	= info->clock_offset;
		data.rssi		= info->rssi;
3931
		data.ssp_mode		= 0x01;
3932

3933
		if (hci_dev_test_flag(hdev, HCI_MGMT))
3934
			name_known = eir_has_data_type(info->data,
3935 3936
						       sizeof(info->data),
						       EIR_NAME_COMPLETE);
3937 3938 3939
		else
			name_known = true;

3940 3941
		flags = hci_inquiry_cache_update(hdev, &data, name_known);

3942
		eir_len = eir_get_length(info->data, sizeof(info->data));
3943

3944
		mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00,
3945 3946
				  info->dev_class, info->rssi,
				  flags, info->data, eir_len, NULL, 0);
3947 3948 3949 3950
	}

	hci_dev_unlock(hdev);
}
L
Linus Torvalds 已提交
3951

3952 3953 3954 3955 3956 3957
static void hci_key_refresh_complete_evt(struct hci_dev *hdev,
					 struct sk_buff *skb)
{
	struct hci_ev_key_refresh_complete *ev = (void *) skb->data;
	struct hci_conn *conn;

3958
	BT_DBG("%s status 0x%2.2x handle 0x%4.4x", hdev->name, ev->status,
3959 3960 3961 3962 3963 3964 3965 3966
	       __le16_to_cpu(ev->handle));

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
	if (!conn)
		goto unlock;

3967 3968 3969 3970 3971 3972
	/* For BR/EDR the necessary steps are taken through the
	 * auth_complete event.
	 */
	if (conn->type != LE_LINK)
		goto unlock;

3973 3974 3975 3976 3977 3978
	if (!ev->status)
		conn->sec_level = conn->pending_sec_level;

	clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags);

	if (ev->status && conn->state == BT_CONNECTED) {
A
Andre Guedes 已提交
3979
		hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE);
3980
		hci_conn_drop(conn);
3981 3982 3983 3984 3985 3986 3987
		goto unlock;
	}

	if (conn->state == BT_CONFIG) {
		if (!ev->status)
			conn->state = BT_CONNECTED;

3988
		hci_connect_cfm(conn, ev->status);
3989
		hci_conn_drop(conn);
3990 3991 3992 3993 3994
	} else {
		hci_auth_cfm(conn, ev->status);

		hci_conn_hold(conn);
		conn->disc_timeout = HCI_DISCONN_TIMEOUT;
3995
		hci_conn_drop(conn);
3996 3997 3998 3999 4000 4001
	}

unlock:
	hci_dev_unlock(hdev);
}

4002
static u8 hci_get_auth_req(struct hci_conn *conn)
4003 4004
{
	/* If remote requests no-bonding follow that lead */
4005 4006
	if (conn->remote_auth == HCI_AT_NO_BONDING ||
	    conn->remote_auth == HCI_AT_NO_BONDING_MITM)
4007
		return conn->remote_auth | (conn->auth_type & 0x01);
4008

4009 4010 4011 4012 4013 4014 4015
	/* If both remote and local have enough IO capabilities, require
	 * MITM protection
	 */
	if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT &&
	    conn->io_capability != HCI_IO_NO_INPUT_OUTPUT)
		return conn->remote_auth | 0x01;

4016 4017
	/* No MITM protection possible so ignore remote requirement */
	return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01);
4018 4019
}

4020 4021 4022 4023 4024 4025 4026 4027 4028
static u8 bredr_oob_data_present(struct hci_conn *conn)
{
	struct hci_dev *hdev = conn->hdev;
	struct oob_data *data;

	data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR);
	if (!data)
		return 0x00;

4029 4030 4031 4032 4033 4034 4035 4036 4037
	if (bredr_sc_enabled(hdev)) {
		/* When Secure Connections is enabled, then just
		 * return the present value stored with the OOB
		 * data. The stored value contains the right present
		 * information. However it can only be trusted when
		 * not in Secure Connection Only mode.
		 */
		if (!hci_dev_test_flag(hdev, HCI_SC_ONLY))
			return data->present;
4038

4039 4040 4041 4042
		/* When Secure Connections Only mode is enabled, then
		 * the P-256 values are required. If they are not
		 * available, then do not declare that OOB data is
		 * present.
4043
		 */
4044 4045
		if (!memcmp(data->rand256, ZERO_KEY, 16) ||
		    !memcmp(data->hash256, ZERO_KEY, 16))
4046 4047
			return 0x00;

4048
		return 0x02;
4049
	}
4050

4051 4052 4053 4054 4055 4056 4057 4058 4059
	/* When Secure Connections is not enabled or actually
	 * not supported by the hardware, then check that if
	 * P-192 data values are present.
	 */
	if (!memcmp(data->rand192, ZERO_KEY, 16) ||
	    !memcmp(data->hash192, ZERO_KEY, 16))
		return 0x00;

	return 0x01;
4060 4061
}

4062
static void hci_io_capa_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
4063 4064 4065 4066 4067 4068 4069 4070 4071
{
	struct hci_ev_io_capa_request *ev = (void *) skb->data;
	struct hci_conn *conn;

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

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4072 4073 4074 4075 4076
	if (!conn)
		goto unlock;

	hci_conn_hold(conn);

4077
	if (!hci_dev_test_flag(hdev, HCI_MGMT))
4078 4079
		goto unlock;

4080 4081 4082
	/* Allow pairing if we're pairable, the initiators of the
	 * pairing or if the remote is not requesting bonding.
	 */
4083
	if (hci_dev_test_flag(hdev, HCI_BONDABLE) ||
4084
	    test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) ||
4085
	    (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) {
4086 4087 4088
		struct hci_cp_io_capability_reply cp;

		bacpy(&cp.bdaddr, &ev->bdaddr);
4089 4090 4091
		/* Change the IO capability from KeyboardDisplay
		 * to DisplayYesNo as it is not supported by BT spec. */
		cp.capability = (conn->io_capability == 0x04) ?
4092
				HCI_IO_DISPLAY_YESNO : conn->io_capability;
4093 4094 4095

		/* If we are initiators, there is no remote information yet */
		if (conn->remote_auth == 0xff) {
4096
			/* Request MITM protection if our IO caps allow it
4097
			 * except for the no-bonding case.
4098
			 */
4099
			if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
4100
			    conn->auth_type != HCI_AT_NO_BONDING)
4101
				conn->auth_type |= 0x01;
4102 4103 4104
		} else {
			conn->auth_type = hci_get_auth_req(conn);
		}
4105

4106 4107 4108
		/* If we're not bondable, force one of the non-bondable
		 * authentication requirement values.
		 */
4109
		if (!hci_dev_test_flag(hdev, HCI_BONDABLE))
4110 4111 4112
			conn->auth_type &= HCI_AT_NO_BONDING_MITM;

		cp.authentication = conn->auth_type;
4113
		cp.oob_data = bredr_oob_data_present(conn);
4114

4115
		hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY,
4116
			     sizeof(cp), &cp);
4117 4118 4119 4120
	} else {
		struct hci_cp_io_capability_neg_reply cp;

		bacpy(&cp.bdaddr, &ev->bdaddr);
4121
		cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED;
4122

4123
		hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY,
4124
			     sizeof(cp), &cp);
4125 4126 4127 4128 4129 4130
	}

unlock:
	hci_dev_unlock(hdev);
}

4131
static void hci_io_capa_reply_evt(struct hci_dev *hdev, struct sk_buff *skb)
4132 4133 4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147
{
	struct hci_ev_io_capa_reply *ev = (void *) skb->data;
	struct hci_conn *conn;

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

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
	if (!conn)
		goto unlock;

	conn->remote_cap = ev->capability;
	conn->remote_auth = ev->authentication;

unlock:
4148 4149 4150
	hci_dev_unlock(hdev);
}

4151 4152
static void hci_user_confirm_request_evt(struct hci_dev *hdev,
					 struct sk_buff *skb)
4153 4154
{
	struct hci_ev_user_confirm_req *ev = (void *) skb->data;
4155
	int loc_mitm, rem_mitm, confirm_hint = 0;
4156
	struct hci_conn *conn;
4157 4158 4159 4160 4161

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

	hci_dev_lock(hdev);

4162
	if (!hci_dev_test_flag(hdev, HCI_MGMT))
4163
		goto unlock;
4164

4165 4166 4167 4168 4169 4170 4171 4172
	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
	if (!conn)
		goto unlock;

	loc_mitm = (conn->auth_type & 0x01);
	rem_mitm = (conn->remote_auth & 0x01);

	/* If we require MITM but the remote device can't provide that
4173 4174 4175
	 * (it has NoInputNoOutput) then reject the confirmation
	 * request. We check the security level here since it doesn't
	 * necessarily match conn->auth_type.
4176
	 */
4177 4178
	if (conn->pending_sec_level > BT_SECURITY_MEDIUM &&
	    conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) {
4179 4180
		BT_DBG("Rejecting request: remote device can't provide MITM");
		hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY,
4181
			     sizeof(ev->bdaddr), &ev->bdaddr);
4182 4183 4184 4185
		goto unlock;
	}

	/* If no side requires MITM protection; auto-accept */
4186 4187
	if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) &&
	    (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) {
4188 4189 4190

		/* If we're not the initiators request authorization to
		 * proceed from user space (mgmt_user_confirm with
4191
		 * confirm_hint set to 1). The exception is if neither
4192 4193
		 * side had MITM or if the local IO capability is
		 * NoInputNoOutput, in which case we do auto-accept
4194 4195
		 */
		if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) &&
4196
		    conn->io_capability != HCI_IO_NO_INPUT_OUTPUT &&
4197
		    (loc_mitm || rem_mitm)) {
4198 4199 4200 4201 4202
			BT_DBG("Confirming auto-accept as acceptor");
			confirm_hint = 1;
			goto confirm;
		}

4203
		BT_DBG("Auto-accept of user confirmation with %ums delay",
4204
		       hdev->auto_accept_delay);
4205 4206 4207

		if (hdev->auto_accept_delay > 0) {
			int delay = msecs_to_jiffies(hdev->auto_accept_delay);
4208 4209
			queue_delayed_work(conn->hdev->workqueue,
					   &conn->auto_accept_work, delay);
4210 4211 4212
			goto unlock;
		}

4213
		hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY,
4214
			     sizeof(ev->bdaddr), &ev->bdaddr);
4215 4216 4217
		goto unlock;
	}

4218
confirm:
4219 4220
	mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0,
				  le32_to_cpu(ev->passkey), confirm_hint);
4221 4222

unlock:
4223 4224 4225
	hci_dev_unlock(hdev);
}

4226 4227
static void hci_user_passkey_request_evt(struct hci_dev *hdev,
					 struct sk_buff *skb)
4228 4229 4230 4231 4232
{
	struct hci_ev_user_passkey_req *ev = (void *) skb->data;

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

4233
	if (hci_dev_test_flag(hdev, HCI_MGMT))
4234
		mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0);
4235 4236
}

4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251
static void hci_user_passkey_notify_evt(struct hci_dev *hdev,
					struct sk_buff *skb)
{
	struct hci_ev_user_passkey_notify *ev = (void *) skb->data;
	struct hci_conn *conn;

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

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
	if (!conn)
		return;

	conn->passkey_notify = __le32_to_cpu(ev->passkey);
	conn->passkey_entered = 0;

4252
	if (hci_dev_test_flag(hdev, HCI_MGMT))
4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289
		mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
					 conn->dst_type, conn->passkey_notify,
					 conn->passkey_entered);
}

static void hci_keypress_notify_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_keypress_notify *ev = (void *) skb->data;
	struct hci_conn *conn;

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

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
	if (!conn)
		return;

	switch (ev->type) {
	case HCI_KEYPRESS_STARTED:
		conn->passkey_entered = 0;
		return;

	case HCI_KEYPRESS_ENTERED:
		conn->passkey_entered++;
		break;

	case HCI_KEYPRESS_ERASED:
		conn->passkey_entered--;
		break;

	case HCI_KEYPRESS_CLEARED:
		conn->passkey_entered = 0;
		break;

	case HCI_KEYPRESS_COMPLETED:
		return;
	}

4290
	if (hci_dev_test_flag(hdev, HCI_MGMT))
4291 4292 4293 4294 4295
		mgmt_user_passkey_notify(hdev, &conn->dst, conn->type,
					 conn->dst_type, conn->passkey_notify,
					 conn->passkey_entered);
}

4296 4297
static void hci_simple_pair_complete_evt(struct hci_dev *hdev,
					 struct sk_buff *skb)
4298 4299 4300 4301 4302 4303 4304 4305 4306
{
	struct hci_ev_simple_pair_complete *ev = (void *) skb->data;
	struct hci_conn *conn;

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

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
4307 4308 4309
	if (!conn)
		goto unlock;

4310 4311 4312
	/* Reset the authentication requirement to unknown */
	conn->remote_auth = 0xff;

4313 4314 4315 4316 4317
	/* To avoid duplicate auth_failed events to user space we check
	 * the HCI_CONN_AUTH_PEND flag which will be set if we
	 * initiated the authentication. A traditional auth_complete
	 * event gets always produced as initiator and is also mapped to
	 * the mgmt_auth_failed event */
4318
	if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status)
4319
		mgmt_auth_failed(conn, ev->status);
4320

4321
	hci_conn_drop(conn);
4322 4323

unlock:
4324 4325 4326
	hci_dev_unlock(hdev);
}

4327 4328
static void hci_remote_host_features_evt(struct hci_dev *hdev,
					 struct sk_buff *skb)
4329 4330 4331
{
	struct hci_ev_remote_host_features *ev = (void *) skb->data;
	struct inquiry_entry *ie;
4332
	struct hci_conn *conn;
4333 4334 4335 4336 4337

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

	hci_dev_lock(hdev);

4338 4339 4340 4341
	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr);
	if (conn)
		memcpy(conn->features[1], ev->features, 8);

4342 4343
	ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr);
	if (ie)
4344
		ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP);
4345 4346 4347 4348

	hci_dev_unlock(hdev);
}

4349 4350
static void hci_remote_oob_data_request_evt(struct hci_dev *hdev,
					    struct sk_buff *skb)
4351 4352 4353 4354 4355 4356 4357 4358
{
	struct hci_ev_remote_oob_data_request *ev = (void *) skb->data;
	struct oob_data *data;

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

	hci_dev_lock(hdev);

4359
	if (!hci_dev_test_flag(hdev, HCI_MGMT))
4360 4361
		goto unlock;

4362
	data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR);
4363 4364
	if (!data) {
		struct hci_cp_remote_oob_data_neg_reply cp;
4365

4366 4367 4368 4369 4370
		bacpy(&cp.bdaddr, &ev->bdaddr);
		hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY,
			     sizeof(cp), &cp);
		goto unlock;
	}
4371

4372 4373
	if (bredr_sc_enabled(hdev)) {
		struct hci_cp_remote_oob_ext_data_reply cp;
4374

4375
		bacpy(&cp.bdaddr, &ev->bdaddr);
4376
		if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) {
4377 4378 4379 4380 4381
			memset(cp.hash192, 0, sizeof(cp.hash192));
			memset(cp.rand192, 0, sizeof(cp.rand192));
		} else {
			memcpy(cp.hash192, data->hash192, sizeof(cp.hash192));
			memcpy(cp.rand192, data->rand192, sizeof(cp.rand192));
4382
		}
4383 4384 4385 4386 4387
		memcpy(cp.hash256, data->hash256, sizeof(cp.hash256));
		memcpy(cp.rand256, data->rand256, sizeof(cp.rand256));

		hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY,
			     sizeof(cp), &cp);
4388
	} else {
4389
		struct hci_cp_remote_oob_data_reply cp;
4390 4391

		bacpy(&cp.bdaddr, &ev->bdaddr);
4392 4393 4394 4395
		memcpy(cp.hash, data->hash192, sizeof(cp.hash));
		memcpy(cp.rand, data->rand192, sizeof(cp.rand));

		hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY,
4396
			     sizeof(cp), &cp);
4397 4398
	}

4399
unlock:
4400 4401 4402
	hci_dev_unlock(hdev);
}

4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432
static void hci_phy_link_complete_evt(struct hci_dev *hdev,
				      struct sk_buff *skb)
{
	struct hci_ev_phy_link_complete *ev = (void *) skb->data;
	struct hci_conn *hcon, *bredr_hcon;

	BT_DBG("%s handle 0x%2.2x status 0x%2.2x", hdev->name, ev->phy_handle,
	       ev->status);

	hci_dev_lock(hdev);

	hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
	if (!hcon) {
		hci_dev_unlock(hdev);
		return;
	}

	if (ev->status) {
		hci_conn_del(hcon);
		hci_dev_unlock(hdev);
		return;
	}

	bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon;

	hcon->state = BT_CONNECTED;
	bacpy(&hcon->dst, &bredr_hcon->dst);

	hci_conn_hold(hcon);
	hcon->disc_timeout = HCI_DISCONN_TIMEOUT;
4433
	hci_conn_drop(hcon);
4434

4435
	hci_debugfs_create_conn(hcon);
4436 4437
	hci_conn_add_sysfs(hcon);

4438
	amp_physical_cfm(bredr_hcon, hcon);
4439

4440
	hci_dev_unlock(hdev);
4441 4442
}

4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480
static void hci_loglink_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_logical_link_complete *ev = (void *) skb->data;
	struct hci_conn *hcon;
	struct hci_chan *hchan;
	struct amp_mgr *mgr;

	BT_DBG("%s log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x",
	       hdev->name, le16_to_cpu(ev->handle), ev->phy_handle,
	       ev->status);

	hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
	if (!hcon)
		return;

	/* Create AMP hchan */
	hchan = hci_chan_create(hcon);
	if (!hchan)
		return;

	hchan->handle = le16_to_cpu(ev->handle);

	BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan);

	mgr = hcon->amp_mgr;
	if (mgr && mgr->bredr_chan) {
		struct l2cap_chan *bredr_chan = mgr->bredr_chan;

		l2cap_chan_lock(bredr_chan);

		bredr_chan->conn->mtu = hdev->block_mtu;
		l2cap_logical_cfm(bredr_chan, hchan, 0);
		hci_conn_hold(hcon);

		l2cap_chan_unlock(bredr_chan);
	}
}

4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 4500 4501 4502 4503 4504
static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev,
					     struct sk_buff *skb)
{
	struct hci_ev_disconn_logical_link_complete *ev = (void *) skb->data;
	struct hci_chan *hchan;

	BT_DBG("%s log handle 0x%4.4x status 0x%2.2x", hdev->name,
	       le16_to_cpu(ev->handle), ev->status);

	if (ev->status)
		return;

	hci_dev_lock(hdev);

	hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle));
	if (!hchan)
		goto unlock;

	amp_destroy_logical_link(hchan, ev->reason);

unlock:
	hci_dev_unlock(hdev);
}

4505 4506 4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526
static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev,
					     struct sk_buff *skb)
{
	struct hci_ev_disconn_phy_link_complete *ev = (void *) skb->data;
	struct hci_conn *hcon;

	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);

	if (ev->status)
		return;

	hci_dev_lock(hdev);

	hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
	if (hcon) {
		hcon->state = BT_CLOSED;
		hci_conn_del(hcon);
	}

	hci_dev_unlock(hdev);
}

4527
static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
V
Ville Tervo 已提交
4528 4529
{
	struct hci_ev_le_conn_complete *ev = (void *) skb->data;
4530
	struct hci_conn_params *params;
V
Ville Tervo 已提交
4531
	struct hci_conn *conn;
4532
	struct smp_irk *irk;
4533
	u8 addr_type;
V
Ville Tervo 已提交
4534

4535
	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);
V
Ville Tervo 已提交
4536 4537 4538

	hci_dev_lock(hdev);

4539 4540 4541
	/* All controllers implicitly stop advertising in the event of a
	 * connection, so ensure that the state bit is cleared.
	 */
4542
	hci_dev_clear_flag(hdev, HCI_LE_ADV);
4543

4544
	conn = hci_conn_hash_lookup_state(hdev, LE_LINK, BT_CONNECT);
4545
	if (!conn) {
4546
		conn = hci_conn_add(hdev, LE_LINK, &ev->bdaddr, ev->role);
4547 4548
		if (!conn) {
			BT_ERR("No memory for new connection");
A
Andre Guedes 已提交
4549
			goto unlock;
4550
		}
4551 4552

		conn->dst_type = ev->bdaddr_type;
4553

4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564
		/* If we didn't have a hci_conn object previously
		 * but we're in master role this must be something
		 * initiated using a white list. Since white list based
		 * connections are not "first class citizens" we don't
		 * have full tracking of them. Therefore, we go ahead
		 * with a "best effort" approach of determining the
		 * initiator address based on the HCI_PRIVACY flag.
		 */
		if (conn->out) {
			conn->resp_addr_type = ev->bdaddr_type;
			bacpy(&conn->resp_addr, &ev->bdaddr);
4565
			if (hci_dev_test_flag(hdev, HCI_PRIVACY)) {
4566 4567 4568 4569 4570 4571 4572 4573
				conn->init_addr_type = ADDR_LE_DEV_RANDOM;
				bacpy(&conn->init_addr, &hdev->rpa);
			} else {
				hci_copy_identity_address(hdev,
							  &conn->init_addr,
							  &conn->init_addr_type);
			}
		}
4574 4575
	} else {
		cancel_delayed_work(&conn->le_conn_timeout);
4576
	}
V
Ville Tervo 已提交
4577

4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589
	if (!conn->out) {
		/* Set the responder (our side) address type based on
		 * the advertising address type.
		 */
		conn->resp_addr_type = hdev->adv_addr_type;
		if (hdev->adv_addr_type == ADDR_LE_DEV_RANDOM)
			bacpy(&conn->resp_addr, &hdev->random_addr);
		else
			bacpy(&conn->resp_addr, &hdev->bdaddr);

		conn->init_addr_type = ev->bdaddr_type;
		bacpy(&conn->init_addr, &ev->bdaddr);
4590 4591 4592 4593 4594 4595 4596 4597

		/* For incoming connections, set the default minimum
		 * and maximum connection interval. They will be used
		 * to check if the parameters are in range and if not
		 * trigger the connection update procedure.
		 */
		conn->le_conn_min_interval = hdev->le_conn_min_interval;
		conn->le_conn_max_interval = hdev->le_conn_max_interval;
4598
	}
4599

4600 4601 4602 4603 4604 4605 4606 4607 4608 4609
	/* Lookup the identity address from the stored connection
	 * address and address type.
	 *
	 * When establishing connections to an identity address, the
	 * connection procedure will store the resolvable random
	 * address first. Now if it can be converted back into the
	 * identity address, start using the identity address from
	 * now on.
	 */
	irk = hci_get_irk(hdev, &conn->dst, conn->dst_type);
4610 4611 4612 4613 4614
	if (irk) {
		bacpy(&conn->dst, &irk->bdaddr);
		conn->dst_type = irk->addr_type;
	}

4615 4616
	if (ev->status) {
		hci_le_conn_failed(conn, ev->status);
4617 4618 4619
		goto unlock;
	}

4620 4621 4622 4623 4624
	if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
		addr_type = BDADDR_LE_PUBLIC;
	else
		addr_type = BDADDR_LE_RANDOM;

4625 4626 4627
	/* Drop the connection if the device is blocked */
	if (hci_bdaddr_list_lookup(&hdev->blacklist, &conn->dst, addr_type)) {
		hci_conn_drop(conn);
4628 4629 4630
		goto unlock;
	}

4631
	if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags))
4632
		mgmt_device_connected(hdev, conn, 0, NULL, 0);
4633

4634
	conn->sec_level = BT_SECURITY_LOW;
V
Ville Tervo 已提交
4635
	conn->handle = __le16_to_cpu(ev->handle);
4636
	conn->state = BT_CONFIG;
V
Ville Tervo 已提交
4637

4638 4639 4640 4641
	conn->le_conn_interval = le16_to_cpu(ev->interval);
	conn->le_conn_latency = le16_to_cpu(ev->latency);
	conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);

4642
	hci_debugfs_create_conn(conn);
V
Ville Tervo 已提交
4643 4644
	hci_conn_add_sysfs(conn);

4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671
	if (!ev->status) {
		/* The remote features procedure is defined for master
		 * role only. So only in case of an initiated connection
		 * request the remote features.
		 *
		 * If the local controller supports slave-initiated features
		 * exchange, then requesting the remote features in slave
		 * role is possible. Otherwise just transition into the
		 * connected state without requesting the remote features.
		 */
		if (conn->out ||
		    (hdev->le_features[0] & HCI_LE_SLAVE_FEATURES)) {
			struct hci_cp_le_read_remote_features cp;

			cp.handle = __cpu_to_le16(conn->handle);

			hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES,
				     sizeof(cp), &cp);

			hci_conn_hold(conn);
		} else {
			conn->state = BT_CONNECTED;
			hci_connect_cfm(conn, ev->status);
		}
	} else {
		hci_connect_cfm(conn, ev->status);
	}
V
Ville Tervo 已提交
4672

4673 4674
	params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
					   conn->dst_type);
4675
	if (params) {
4676
		list_del_init(&params->action);
4677 4678
		if (params->conn) {
			hci_conn_drop(params->conn);
4679
			hci_conn_put(params->conn);
4680 4681 4682
			params->conn = NULL;
		}
	}
4683

V
Ville Tervo 已提交
4684
unlock:
4685
	hci_update_background_scan(hdev);
V
Ville Tervo 已提交
4686 4687 4688
	hci_dev_unlock(hdev);
}

4689 4690 4691 4692 4693 4694 4695 4696 4697 4698 4699 4700 4701 4702 4703 4704 4705 4706 4707 4708 4709 4710 4711
static void hci_le_conn_update_complete_evt(struct hci_dev *hdev,
					    struct sk_buff *skb)
{
	struct hci_ev_le_conn_update_complete *ev = (void *) skb->data;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);

	if (ev->status)
		return;

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
	if (conn) {
		conn->le_conn_interval = le16_to_cpu(ev->interval);
		conn->le_conn_latency = le16_to_cpu(ev->latency);
		conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout);
	}

	hci_dev_unlock(hdev);
}

4712
/* This function requires the caller holds hdev->lock */
4713 4714 4715
static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev,
					      bdaddr_t *addr,
					      u8 addr_type, u8 adv_type)
4716 4717
{
	struct hci_conn *conn;
4718
	struct hci_conn_params *params;
4719

4720 4721
	/* If the event is not connectable don't proceed further */
	if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND)
4722
		return NULL;
4723 4724

	/* Ignore if the device is blocked */
4725
	if (hci_bdaddr_list_lookup(&hdev->blacklist, addr, addr_type))
4726
		return NULL;
4727

4728 4729 4730 4731
	/* Most controller will fail if we try to create new connections
	 * while we have an existing one in slave role.
	 */
	if (hdev->conn_hash.le_num_slave > 0)
4732
		return NULL;
4733

4734 4735 4736
	/* If we're not connectable only connect devices that we have in
	 * our pend_le_conns list.
	 */
4737 4738 4739
	params = hci_pend_le_action_lookup(&hdev->pend_le_conns,
					   addr, addr_type);
	if (!params)
4740
		return NULL;
4741 4742 4743 4744 4745 4746 4747 4748

	switch (params->auto_connect) {
	case HCI_AUTO_CONN_DIRECT:
		/* Only devices advertising with ADV_DIRECT_IND are
		 * triggering a connection attempt. This is allowing
		 * incoming connections from slave devices.
		 */
		if (adv_type != LE_ADV_DIRECT_IND)
4749
			return NULL;
4750 4751 4752 4753 4754 4755 4756 4757 4758 4759
		break;
	case HCI_AUTO_CONN_ALWAYS:
		/* Devices advertising with ADV_IND or ADV_DIRECT_IND
		 * are triggering a connection attempt. This means
		 * that incoming connectioms from slave device are
		 * accepted and also outgoing connections to slave
		 * devices are established when found.
		 */
		break;
	default:
4760
		return NULL;
4761
	}
4762 4763

	conn = hci_connect_le(hdev, addr, addr_type, BT_SECURITY_LOW,
4764
			      HCI_LE_AUTOCONN_TIMEOUT, HCI_ROLE_MASTER);
4765 4766 4767 4768 4769 4770 4771
	if (!IS_ERR(conn)) {
		/* Store the pointer since we don't really have any
		 * other owner of the object besides the params that
		 * triggered it. This way we can abort the connection if
		 * the parameters get removed and keep the reference
		 * count consistent once the connection is established.
		 */
4772
		params->conn = hci_conn_get(conn);
4773
		return conn;
4774
	}
4775 4776 4777 4778 4779 4780 4781 4782 4783 4784 4785

	switch (PTR_ERR(conn)) {
	case -EBUSY:
		/* If hci_connect() returns -EBUSY it means there is already
		 * an LE connection attempt going on. Since controllers don't
		 * support more than one connection attempt at the time, we
		 * don't consider this an error case.
		 */
		break;
	default:
		BT_DBG("Failed to connect: err %ld", PTR_ERR(conn));
4786
		return NULL;
4787
	}
4788 4789

	return NULL;
4790 4791
}

4792
static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr,
4793 4794
			       u8 bdaddr_type, bdaddr_t *direct_addr,
			       u8 direct_addr_type, s8 rssi, u8 *data, u8 len)
4795
{
4796
	struct discovery_state *d = &hdev->discovery;
4797
	struct smp_irk *irk;
4798
	struct hci_conn *conn;
4799
	bool match;
4800
	u32 flags;
4801

4802 4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816
	/* If the direct address is present, then this report is from
	 * a LE Direct Advertising Report event. In that case it is
	 * important to see if the address is matching the local
	 * controller address.
	 */
	if (direct_addr) {
		/* Only resolvable random addresses are valid for these
		 * kind of reports and others can be ignored.
		 */
		if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type))
			return;

		/* If the controller is not using resolvable random
		 * addresses, then this report can be ignored.
		 */
4817
		if (!hci_dev_test_flag(hdev, HCI_PRIVACY))
4818 4819 4820 4821 4822 4823 4824 4825 4826 4827
			return;

		/* If the local IRK of the controller does not match
		 * with the resolvable random address provided, then
		 * this report can be ignored.
		 */
		if (!smp_irk_matches(hdev, hdev->irk, direct_addr))
			return;
	}

4828 4829 4830 4831 4832 4833 4834 4835
	/* Check if we need to convert to identity address */
	irk = hci_get_irk(hdev, bdaddr, bdaddr_type);
	if (irk) {
		bdaddr = &irk->bdaddr;
		bdaddr_type = irk->addr_type;
	}

	/* Check if we have been requested to connect to this device */
4836 4837 4838 4839 4840 4841 4842 4843
	conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, type);
	if (conn && type == LE_ADV_IND) {
		/* Store report for later inclusion by
		 * mgmt_device_connected
		 */
		memcpy(conn->le_adv_data, data, len);
		conn->le_adv_data_len = len;
	}
4844

4845 4846 4847 4848
	/* Passive scanning shouldn't trigger any device found events,
	 * except for devices marked as CONN_REPORT for which we do send
	 * device found events.
	 */
4849
	if (hdev->le_scan_type == LE_SCAN_PASSIVE) {
4850 4851 4852
		if (type == LE_ADV_DIRECT_IND)
			return;

4853 4854
		if (!hci_pend_le_action_lookup(&hdev->pend_le_reports,
					       bdaddr, bdaddr_type))
4855 4856 4857 4858 4859 4860 4861 4862
			return;

		if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND)
			flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
		else
			flags = 0;
		mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
				  rssi, flags, data, len, NULL, 0);
4863
		return;
4864
	}
4865

4866 4867 4868 4869 4870 4871 4872 4873 4874 4875 4876 4877 4878 4879 4880 4881 4882 4883 4884 4885 4886
	/* When receiving non-connectable or scannable undirected
	 * advertising reports, this means that the remote device is
	 * not connectable and then clearly indicate this in the
	 * device found event.
	 *
	 * When receiving a scan response, then there is no way to
	 * know if the remote device is connectable or not. However
	 * since scan responses are merged with a previously seen
	 * advertising report, the flags field from that report
	 * will be used.
	 *
	 * In the really unlikely case that a controller get confused
	 * and just sends a scan response event, then it is marked as
	 * not connectable as well.
	 */
	if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND ||
	    type == LE_ADV_SCAN_RSP)
		flags = MGMT_DEV_FOUND_NOT_CONNECTABLE;
	else
		flags = 0;

4887 4888 4889 4890 4891 4892 4893 4894 4895 4896
	/* If there's nothing pending either store the data from this
	 * event or send an immediate device found event if the data
	 * should not be stored for later.
	 */
	if (!has_pending_adv_report(hdev)) {
		/* If the report will trigger a SCAN_REQ store it for
		 * later merging.
		 */
		if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
			store_pending_adv_report(hdev, bdaddr, bdaddr_type,
4897
						 rssi, flags, data, len);
4898 4899 4900 4901
			return;
		}

		mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
4902
				  rssi, flags, data, len, NULL, 0);
4903 4904 4905
		return;
	}

4906 4907 4908 4909
	/* Check if the pending report is for the same device as the new one */
	match = (!bacmp(bdaddr, &d->last_adv_addr) &&
		 bdaddr_type == d->last_adv_addr_type);

4910 4911 4912 4913
	/* If the pending data doesn't match this report or this isn't a
	 * scan response (e.g. we got a duplicate ADV_IND) then force
	 * sending of the pending data.
	 */
4914 4915 4916 4917
	if (type != LE_ADV_SCAN_RSP || !match) {
		/* Send out whatever is in the cache, but skip duplicates */
		if (!match)
			mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
4918
					  d->last_adv_addr_type, NULL,
4919
					  d->last_adv_rssi, d->last_adv_flags,
4920
					  d->last_adv_data,
4921
					  d->last_adv_data_len, NULL, 0);
4922 4923 4924 4925 4926 4927

		/* If the new report will trigger a SCAN_REQ store it for
		 * later merging.
		 */
		if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) {
			store_pending_adv_report(hdev, bdaddr, bdaddr_type,
4928
						 rssi, flags, data, len);
4929 4930 4931 4932 4933 4934 4935
			return;
		}

		/* The advertising reports cannot be merged, so clear
		 * the pending report and send out a device found event.
		 */
		clear_pending_adv_report(hdev);
4936
		mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL,
4937
				  rssi, flags, data, len, NULL, 0);
4938 4939 4940 4941 4942 4943 4944 4945
		return;
	}

	/* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and
	 * the new event is a SCAN_RSP. We can therefore proceed with
	 * sending a merged device found event.
	 */
	mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK,
4946
			  d->last_adv_addr_type, NULL, rssi, d->last_adv_flags,
4947
			  d->last_adv_data, d->last_adv_data_len, data, len);
4948
	clear_pending_adv_report(hdev);
4949 4950
}

4951
static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb)
4952
{
4953 4954
	u8 num_reports = skb->data[0];
	void *ptr = &skb->data[1];
4955

4956 4957
	hci_dev_lock(hdev);

4958 4959
	while (num_reports--) {
		struct hci_ev_le_advertising_info *ev = ptr;
4960
		s8 rssi;
4961

A
Andre Guedes 已提交
4962
		rssi = ev->data[ev->length];
4963
		process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
4964 4965
				   ev->bdaddr_type, NULL, 0, rssi,
				   ev->data, ev->length);
A
Andre Guedes 已提交
4966

4967
		ptr += sizeof(*ev) + ev->length + 1;
4968
	}
4969 4970

	hci_dev_unlock(hdev);
4971 4972
}

4973 4974 4975 4976 4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995 4996 4997 4998 4999 5000 5001 5002 5003 5004 5005 5006 5007 5008 5009 5010 5011 5012 5013 5014
static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev,
					    struct sk_buff *skb)
{
	struct hci_ev_le_remote_feat_complete *ev = (void *)skb->data;
	struct hci_conn *conn;

	BT_DBG("%s status 0x%2.2x", hdev->name, ev->status);

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
	if (conn) {
		if (!ev->status)
			memcpy(conn->features[0], ev->features, 8);

		if (conn->state == BT_CONFIG) {
			__u8 status;

			/* If the local controller supports slave-initiated
			 * features exchange, but the remote controller does
			 * not, then it is possible that the error code 0x1a
			 * for unsupported remote feature gets returned.
			 *
			 * In this specific case, allow the connection to
			 * transition into connected state and mark it as
			 * successful.
			 */
			if ((hdev->le_features[0] & HCI_LE_SLAVE_FEATURES) &&
			    !conn->out && ev->status == 0x1a)
				status = 0x00;
			else
				status = ev->status;

			conn->state = BT_CONNECTED;
			hci_connect_cfm(conn, status);
			hci_conn_drop(conn);
		}
	}

	hci_dev_unlock(hdev);
}

5015
static void hci_le_ltk_request_evt(struct hci_dev *hdev, struct sk_buff *skb)
5016 5017 5018
{
	struct hci_ev_le_ltk_req *ev = (void *) skb->data;
	struct hci_cp_le_ltk_reply cp;
5019
	struct hci_cp_le_ltk_neg_reply neg;
5020
	struct hci_conn *conn;
5021
	struct smp_ltk *ltk;
5022

5023
	BT_DBG("%s handle 0x%4.4x", hdev->name, __le16_to_cpu(ev->handle));
5024 5025 5026 5027

	hci_dev_lock(hdev);

	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
5028 5029
	if (conn == NULL)
		goto not_found;
5030

5031
	ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role);
5032
	if (!ltk)
5033 5034
		goto not_found;

5035 5036 5037 5038 5039 5040 5041 5042 5043 5044
	if (smp_ltk_is_sc(ltk)) {
		/* With SC both EDiv and Rand are set to zero */
		if (ev->ediv || ev->rand)
			goto not_found;
	} else {
		/* For non-SC keys check that EDiv and Rand match */
		if (ev->ediv != ltk->ediv || ev->rand != ltk->rand)
			goto not_found;
	}

5045 5046
	memcpy(cp.ltk, ltk->val, ltk->enc_size);
	memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size);
5047
	cp.handle = cpu_to_le16(conn->handle);
5048

5049
	conn->pending_sec_level = smp_ltk_sec_level(ltk);
5050

5051
	conn->enc_key_size = ltk->enc_size;
5052 5053 5054

	hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);

5055 5056 5057 5058 5059 5060
	/* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a
	 * temporary key used to encrypt a connection following
	 * pairing. It is used during the Encrypted Session Setup to
	 * distribute the keys. Later, security can be re-established
	 * using a distributed LTK.
	 */
5061
	if (ltk->type == SMP_STK) {
5062
		set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
J
Johan Hedberg 已提交
5063 5064
		list_del_rcu(&ltk->list);
		kfree_rcu(ltk, rcu);
5065 5066
	} else {
		clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags);
5067 5068
	}

5069
	hci_dev_unlock(hdev);
5070 5071 5072 5073 5074 5075 5076

	return;

not_found:
	neg.handle = ev->handle;
	hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
	hci_dev_unlock(hdev);
5077 5078
}

5079 5080 5081 5082 5083 5084 5085 5086 5087 5088 5089 5090 5091 5092 5093 5094 5095 5096 5097 5098 5099 5100 5101 5102 5103 5104 5105 5106 5107 5108 5109 5110 5111 5112 5113
static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle,
				      u8 reason)
{
	struct hci_cp_le_conn_param_req_neg_reply cp;

	cp.handle = cpu_to_le16(handle);
	cp.reason = reason;

	hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp),
		     &cp);
}

static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev,
					     struct sk_buff *skb)
{
	struct hci_ev_le_remote_conn_param_req *ev = (void *) skb->data;
	struct hci_cp_le_conn_param_req_reply cp;
	struct hci_conn *hcon;
	u16 handle, min, max, latency, timeout;

	handle = le16_to_cpu(ev->handle);
	min = le16_to_cpu(ev->interval_min);
	max = le16_to_cpu(ev->interval_max);
	latency = le16_to_cpu(ev->latency);
	timeout = le16_to_cpu(ev->timeout);

	hcon = hci_conn_hash_lookup_handle(hdev, handle);
	if (!hcon || hcon->state != BT_CONNECTED)
		return send_conn_param_neg_reply(hdev, handle,
						 HCI_ERROR_UNKNOWN_CONN_ID);

	if (hci_check_conn_params(min, max, latency, timeout))
		return send_conn_param_neg_reply(hdev, handle,
						 HCI_ERROR_INVALID_LL_PARAMS);

5114
	if (hcon->role == HCI_ROLE_MASTER) {
5115
		struct hci_conn_params *params;
5116
		u8 store_hint;
5117 5118 5119 5120 5121 5122 5123 5124 5125 5126

		hci_dev_lock(hdev);

		params = hci_conn_params_lookup(hdev, &hcon->dst,
						hcon->dst_type);
		if (params) {
			params->conn_min_interval = min;
			params->conn_max_interval = max;
			params->conn_latency = latency;
			params->supervision_timeout = timeout;
5127 5128 5129
			store_hint = 0x01;
		} else{
			store_hint = 0x00;
5130 5131 5132 5133
		}

		hci_dev_unlock(hdev);

5134 5135
		mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type,
				    store_hint, min, max, latency, timeout);
5136
	}
5137

5138 5139 5140 5141 5142 5143 5144 5145 5146 5147 5148
	cp.handle = ev->handle;
	cp.interval_min = ev->interval_min;
	cp.interval_max = ev->interval_max;
	cp.latency = ev->latency;
	cp.timeout = ev->timeout;
	cp.min_ce_len = 0;
	cp.max_ce_len = 0;

	hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp);
}

5149 5150 5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164 5165 5166 5167 5168 5169
static void hci_le_direct_adv_report_evt(struct hci_dev *hdev,
					 struct sk_buff *skb)
{
	u8 num_reports = skb->data[0];
	void *ptr = &skb->data[1];

	hci_dev_lock(hdev);

	while (num_reports--) {
		struct hci_ev_le_direct_adv_info *ev = ptr;

		process_adv_report(hdev, ev->evt_type, &ev->bdaddr,
				   ev->bdaddr_type, &ev->direct_addr,
				   ev->direct_addr_type, ev->rssi, NULL, 0);

		ptr += sizeof(*ev);
	}

	hci_dev_unlock(hdev);
}

5170
static void hci_le_meta_evt(struct hci_dev *hdev, struct sk_buff *skb)
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5171 5172 5173 5174 5175 5176 5177 5178 5179 5180
{
	struct hci_ev_le_meta *le_ev = (void *) skb->data;

	skb_pull(skb, sizeof(*le_ev));

	switch (le_ev->subevent) {
	case HCI_EV_LE_CONN_COMPLETE:
		hci_le_conn_complete_evt(hdev, skb);
		break;

5181 5182 5183 5184
	case HCI_EV_LE_CONN_UPDATE_COMPLETE:
		hci_le_conn_update_complete_evt(hdev, skb);
		break;

5185 5186 5187 5188
	case HCI_EV_LE_ADVERTISING_REPORT:
		hci_le_adv_report_evt(hdev, skb);
		break;

5189 5190 5191 5192
	case HCI_EV_LE_REMOTE_FEAT_COMPLETE:
		hci_le_remote_feat_complete_evt(hdev, skb);
		break;

5193 5194 5195 5196
	case HCI_EV_LE_LTK_REQ:
		hci_le_ltk_request_evt(hdev, skb);
		break;

5197 5198 5199 5200
	case HCI_EV_LE_REMOTE_CONN_PARAM_REQ:
		hci_le_remote_conn_param_req_evt(hdev, skb);
		break;

5201 5202 5203 5204
	case HCI_EV_LE_DIRECT_ADV_REPORT:
		hci_le_direct_adv_report_evt(hdev, skb);
		break;

V
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5205 5206 5207 5208 5209
	default:
		break;
	}
}

5210 5211 5212 5213 5214 5215 5216 5217 5218 5219 5220 5221 5222 5223 5224 5225
static void hci_chan_selected_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_ev_channel_selected *ev = (void *) skb->data;
	struct hci_conn *hcon;

	BT_DBG("%s handle 0x%2.2x", hdev->name, ev->phy_handle);

	skb_pull(skb, sizeof(*ev));

	hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle);
	if (!hcon)
		return;

	amp_read_loc_assoc_final_data(hdev, hcon);
}

5226 5227 5228 5229 5230 5231 5232 5233 5234 5235 5236 5237 5238 5239 5240 5241 5242 5243 5244 5245 5246 5247 5248 5249 5250 5251 5252 5253 5254 5255 5256 5257 5258 5259 5260 5261 5262 5263 5264 5265 5266 5267 5268 5269 5270
static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode,
				 u8 event, struct sk_buff *skb)
{
	struct hci_ev_cmd_complete *ev;
	struct hci_event_hdr *hdr;

	if (!skb)
		return false;

	if (skb->len < sizeof(*hdr)) {
		BT_ERR("Too short HCI event");
		return false;
	}

	hdr = (void *) skb->data;
	skb_pull(skb, HCI_EVENT_HDR_SIZE);

	if (event) {
		if (hdr->evt != event)
			return false;
		return true;
	}

	if (hdr->evt != HCI_EV_CMD_COMPLETE) {
		BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr->evt);
		return false;
	}

	if (skb->len < sizeof(*ev)) {
		BT_ERR("Too short cmd_complete event");
		return false;
	}

	ev = (void *) skb->data;
	skb_pull(skb, sizeof(*ev));

	if (opcode != __le16_to_cpu(ev->opcode)) {
		BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode,
		       __le16_to_cpu(ev->opcode));
		return false;
	}

	return true;
}

5271 5272 5273
void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
{
	struct hci_event_hdr *hdr = (void *) skb->data;
5274 5275 5276
	hci_req_complete_t req_complete = NULL;
	hci_req_complete_skb_t req_complete_skb = NULL;
	struct sk_buff *orig_skb = NULL;
5277
	u8 status = 0, event = hdr->evt, req_evt = 0;
5278
	u16 opcode = HCI_OP_NOP;
5279

5280
	if (hdev->sent_cmd && bt_cb(hdev->sent_cmd)->req.event == event) {
5281
		struct hci_command_hdr *cmd_hdr = (void *) hdev->sent_cmd->data;
5282 5283 5284
		opcode = __le16_to_cpu(cmd_hdr->opcode);
		hci_req_cmd_complete(hdev, opcode, status, &req_complete,
				     &req_complete_skb);
5285
		req_evt = event;
5286 5287
	}

5288 5289 5290 5291 5292 5293 5294 5295 5296 5297 5298
	/* If it looks like we might end up having to call
	 * req_complete_skb, store a pristine copy of the skb since the
	 * various handlers may modify the original one through
	 * skb_pull() calls, etc.
	 */
	if (req_complete_skb || event == HCI_EV_CMD_STATUS ||
	    event == HCI_EV_CMD_COMPLETE)
		orig_skb = skb_clone(skb, GFP_KERNEL);

	skb_pull(skb, HCI_EVENT_HDR_SIZE);

5299
	switch (event) {
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Linus Torvalds 已提交
5300 5301 5302 5303 5304 5305 5306 5307
	case HCI_EV_INQUIRY_COMPLETE:
		hci_inquiry_complete_evt(hdev, skb);
		break;

	case HCI_EV_INQUIRY_RESULT:
		hci_inquiry_result_evt(hdev, skb);
		break;

5308 5309
	case HCI_EV_CONN_COMPLETE:
		hci_conn_complete_evt(hdev, skb);
5310 5311
		break;

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5312 5313 5314 5315 5316 5317 5318 5319 5320 5321 5322 5323
	case HCI_EV_CONN_REQUEST:
		hci_conn_request_evt(hdev, skb);
		break;

	case HCI_EV_DISCONN_COMPLETE:
		hci_disconn_complete_evt(hdev, skb);
		break;

	case HCI_EV_AUTH_COMPLETE:
		hci_auth_complete_evt(hdev, skb);
		break;

5324 5325 5326 5327
	case HCI_EV_REMOTE_NAME:
		hci_remote_name_evt(hdev, skb);
		break;

L
Linus Torvalds 已提交
5328 5329 5330 5331
	case HCI_EV_ENCRYPT_CHANGE:
		hci_encrypt_change_evt(hdev, skb);
		break;

5332 5333 5334 5335 5336 5337 5338 5339 5340
	case HCI_EV_CHANGE_LINK_KEY_COMPLETE:
		hci_change_link_key_complete_evt(hdev, skb);
		break;

	case HCI_EV_REMOTE_FEATURES:
		hci_remote_features_evt(hdev, skb);
		break;

	case HCI_EV_CMD_COMPLETE:
5341 5342
		hci_cmd_complete_evt(hdev, skb, &opcode, &status,
				     &req_complete, &req_complete_skb);
5343 5344 5345
		break;

	case HCI_EV_CMD_STATUS:
5346 5347
		hci_cmd_status_evt(hdev, skb, &opcode, &status, &req_complete,
				   &req_complete_skb);
5348 5349
		break;

5350 5351 5352 5353
	case HCI_EV_HARDWARE_ERROR:
		hci_hardware_error_evt(hdev, skb);
		break;

5354 5355 5356 5357 5358 5359 5360 5361 5362 5363
	case HCI_EV_ROLE_CHANGE:
		hci_role_change_evt(hdev, skb);
		break;

	case HCI_EV_NUM_COMP_PKTS:
		hci_num_comp_pkts_evt(hdev, skb);
		break;

	case HCI_EV_MODE_CHANGE:
		hci_mode_change_evt(hdev, skb);
L
Linus Torvalds 已提交
5364 5365 5366 5367 5368 5369 5370 5371 5372 5373 5374 5375 5376 5377 5378 5379 5380 5381
		break;

	case HCI_EV_PIN_CODE_REQ:
		hci_pin_code_request_evt(hdev, skb);
		break;

	case HCI_EV_LINK_KEY_REQ:
		hci_link_key_request_evt(hdev, skb);
		break;

	case HCI_EV_LINK_KEY_NOTIFY:
		hci_link_key_notify_evt(hdev, skb);
		break;

	case HCI_EV_CLOCK_OFFSET:
		hci_clock_offset_evt(hdev, skb);
		break;

5382 5383 5384 5385
	case HCI_EV_PKT_TYPE_CHANGE:
		hci_pkt_type_change_evt(hdev, skb);
		break;

5386 5387 5388 5389
	case HCI_EV_PSCAN_REP_MODE:
		hci_pscan_rep_mode_evt(hdev, skb);
		break;

5390 5391
	case HCI_EV_INQUIRY_RESULT_WITH_RSSI:
		hci_inquiry_result_with_rssi_evt(hdev, skb);
5392 5393
		break;

5394 5395
	case HCI_EV_REMOTE_EXT_FEATURES:
		hci_remote_ext_features_evt(hdev, skb);
L
Linus Torvalds 已提交
5396 5397
		break;

5398 5399 5400
	case HCI_EV_SYNC_CONN_COMPLETE:
		hci_sync_conn_complete_evt(hdev, skb);
		break;
L
Linus Torvalds 已提交
5401

5402 5403 5404
	case HCI_EV_EXTENDED_INQUIRY_RESULT:
		hci_extended_inquiry_result_evt(hdev, skb);
		break;
L
Linus Torvalds 已提交
5405

5406 5407 5408 5409
	case HCI_EV_KEY_REFRESH_COMPLETE:
		hci_key_refresh_complete_evt(hdev, skb);
		break;

5410 5411 5412 5413
	case HCI_EV_IO_CAPA_REQUEST:
		hci_io_capa_request_evt(hdev, skb);
		break;

5414 5415 5416 5417
	case HCI_EV_IO_CAPA_REPLY:
		hci_io_capa_reply_evt(hdev, skb);
		break;

5418 5419 5420 5421
	case HCI_EV_USER_CONFIRM_REQUEST:
		hci_user_confirm_request_evt(hdev, skb);
		break;

5422 5423 5424 5425
	case HCI_EV_USER_PASSKEY_REQUEST:
		hci_user_passkey_request_evt(hdev, skb);
		break;

5426 5427 5428 5429 5430 5431 5432 5433
	case HCI_EV_USER_PASSKEY_NOTIFY:
		hci_user_passkey_notify_evt(hdev, skb);
		break;

	case HCI_EV_KEYPRESS_NOTIFY:
		hci_keypress_notify_evt(hdev, skb);
		break;

5434 5435 5436 5437
	case HCI_EV_SIMPLE_PAIR_COMPLETE:
		hci_simple_pair_complete_evt(hdev, skb);
		break;

5438 5439 5440 5441
	case HCI_EV_REMOTE_HOST_FEATURES:
		hci_remote_host_features_evt(hdev, skb);
		break;

V
Ville Tervo 已提交
5442 5443 5444 5445
	case HCI_EV_LE_META:
		hci_le_meta_evt(hdev, skb);
		break;

5446 5447 5448 5449
	case HCI_EV_CHANNEL_SELECTED:
		hci_chan_selected_evt(hdev, skb);
		break;

5450 5451 5452 5453
	case HCI_EV_REMOTE_OOB_DATA_REQUEST:
		hci_remote_oob_data_request_evt(hdev, skb);
		break;

5454 5455 5456 5457
	case HCI_EV_PHY_LINK_COMPLETE:
		hci_phy_link_complete_evt(hdev, skb);
		break;

5458 5459 5460 5461
	case HCI_EV_LOGICAL_LINK_COMPLETE:
		hci_loglink_complete_evt(hdev, skb);
		break;

5462 5463 5464 5465
	case HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE:
		hci_disconn_loglink_complete_evt(hdev, skb);
		break;

5466 5467 5468 5469
	case HCI_EV_DISCONN_PHY_LINK_COMPLETE:
		hci_disconn_phylink_complete_evt(hdev, skb);
		break;

5470 5471 5472 5473
	case HCI_EV_NUM_COMP_BLOCKS:
		hci_num_comp_blocks_evt(hdev, skb);
		break;

5474
	default:
5475
		BT_DBG("%s event 0x%2.2x", hdev->name, event);
L
Linus Torvalds 已提交
5476 5477 5478
		break;
	}

5479
	if (req_complete) {
5480
		req_complete(hdev, status, opcode);
5481 5482 5483 5484 5485
	} else if (req_complete_skb) {
		if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) {
			kfree_skb(orig_skb);
			orig_skb = NULL;
		}
5486
		req_complete_skb(hdev, status, opcode, orig_skb);
5487
	}
5488 5489

	kfree_skb(orig_skb);
L
Linus Torvalds 已提交
5490 5491 5492
	kfree_skb(skb);
	hdev->stat.evt_rx++;
}