Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-18 17:12:55 +00:00
Code Issues Packages Projects Releases Wiki Activity
422bb17f8a
linux/net/bluetooth/mgmt_config.c
Howard Chung c4f1f40816 Bluetooth: Interleave with allowlist scan 
This patch implements the interleaving between allowlist scan and
no-filter scan. It'll be used to save power when at least one monitor is
registered and at least one pending connection or one device to be
scanned for.

The durations of the allowlist scan and the no-filter scan are
controlled by MGMT command: Set Default System Configuration. The
default values are set randomly for now.

Signed-off-by: Howard Chung <howardchung@google.com>
Reviewed-by: Alain Michaud <alainm@chromium.org>
Reviewed-by: Manish Mandlik <mmandlik@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-07 17:00:43 +02:00

294 lines
7.8 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2020 Google Corporation
*/
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include <net/bluetooth/mgmt.h>
#include "mgmt_util.h"
#include "mgmt_config.h"
#define HDEV_PARAM_U16(_param_code_, _param_name_) \
{ \
{ cpu_to_le16(_param_code_), sizeof(__u16) }, \
{ cpu_to_le16(hdev->_param_name_) } \
}
#define HDEV_PARAM_U16_JIFFIES_TO_MSECS(_param_code_, _param_name_) \
{ \
{ cpu_to_le16(_param_code_), sizeof(__u16) }, \
{ cpu_to_le16(jiffies_to_msecs(hdev->_param_name_)) } \
}
int read_def_system_config(struct sock *sk, struct hci_dev *hdev, void *data,
u16 data_len)
{
struct {
struct mgmt_tlv entry;
union {
/* This is a simplification for now since all values
* are 16 bits. In the future, this code may need
* refactoring to account for variable length values
* and properly calculate the required buffer size.
*/
__le16 value;
};
} __packed params[] = {
/* Please see mgmt-api.txt for documentation of these values */
HDEV_PARAM_U16(0x0000, def_page_scan_type),
HDEV_PARAM_U16(0x0001, def_page_scan_int),
HDEV_PARAM_U16(0x0002, def_page_scan_window),
HDEV_PARAM_U16(0x0003, def_inq_scan_type),
HDEV_PARAM_U16(0x0004, def_inq_scan_int),
HDEV_PARAM_U16(0x0005, def_inq_scan_window),
HDEV_PARAM_U16(0x0006, def_br_lsto),
HDEV_PARAM_U16(0x0007, def_page_timeout),
HDEV_PARAM_U16(0x0008, sniff_min_interval),
HDEV_PARAM_U16(0x0009, sniff_max_interval),
HDEV_PARAM_U16(0x000a, le_adv_min_interval),
HDEV_PARAM_U16(0x000b, le_adv_max_interval),
HDEV_PARAM_U16(0x000c, def_multi_adv_rotation_duration),
HDEV_PARAM_U16(0x000d, le_scan_interval),
HDEV_PARAM_U16(0x000e, le_scan_window),
HDEV_PARAM_U16(0x000f, le_scan_int_suspend),
HDEV_PARAM_U16(0x0010, le_scan_window_suspend),
HDEV_PARAM_U16(0x0011, le_scan_int_discovery),
HDEV_PARAM_U16(0x0012, le_scan_window_discovery),
HDEV_PARAM_U16(0x0013, le_scan_int_adv_monitor),
HDEV_PARAM_U16(0x0014, le_scan_window_adv_monitor),
HDEV_PARAM_U16(0x0015, le_scan_int_connect),
HDEV_PARAM_U16(0x0016, le_scan_window_connect),
HDEV_PARAM_U16(0x0017, le_conn_min_interval),
HDEV_PARAM_U16(0x0018, le_conn_max_interval),
HDEV_PARAM_U16(0x0019, le_conn_latency),
HDEV_PARAM_U16(0x001a, le_supv_timeout),
HDEV_PARAM_U16_JIFFIES_TO_MSECS(0x001b,
def_le_autoconnect_timeout),
HDEV_PARAM_U16(0x001d, advmon_allowlist_duration),
HDEV_PARAM_U16(0x001e, advmon_no_filter_duration),
};
struct mgmt_rp_read_def_system_config *rp = (void *)params;
bt_dev_dbg(hdev, "sock %p", sk);
return mgmt_cmd_complete(sk, hdev->id,
MGMT_OP_READ_DEF_SYSTEM_CONFIG,
0, rp, sizeof(params));
}
#define TO_TLV(x) ((struct mgmt_tlv *)(x))
#define TLV_GET_LE16(tlv) le16_to_cpu(*((__le16 *)(TO_TLV(tlv)->value)))
int set_def_system_config(struct sock *sk, struct hci_dev *hdev, void *data,
u16 data_len)
{
u16 buffer_left = data_len;
u8 *buffer = data;
if (buffer_left < sizeof(struct mgmt_tlv)) {
return mgmt_cmd_status(sk, hdev->id,
MGMT_OP_SET_DEF_SYSTEM_CONFIG,
MGMT_STATUS_INVALID_PARAMS);
}
/* First pass to validate the tlv */
while (buffer_left >= sizeof(struct mgmt_tlv)) {
const u8 len = TO_TLV(buffer)->length;
const u16 exp_len = sizeof(struct mgmt_tlv) +
len;
const u16 type = le16_to_cpu(TO_TLV(buffer)->type);
if (buffer_left < exp_len) {
bt_dev_warn(hdev, "invalid len left %d, exp >= %d",
buffer_left, exp_len);
return mgmt_cmd_status(sk, hdev->id,
MGMT_OP_SET_DEF_SYSTEM_CONFIG,
MGMT_STATUS_INVALID_PARAMS);
}
/* Please see mgmt-api.txt for documentation of these values */
switch (type) {
case 0x0000:
case 0x0001:
case 0x0002:
case 0x0003:
case 0x0004:
case 0x0005:
case 0x0006:
case 0x0007:
case 0x0008:
case 0x0009:
case 0x000a:
case 0x000b:
case 0x000c:
case 0x000d:
case 0x000e:
case 0x000f:
case 0x0010:
case 0x0011:
case 0x0012:
case 0x0013:
case 0x0014:
case 0x0015:
case 0x0016:
case 0x0017:
case 0x0018:
case 0x0019:
case 0x001a:
case 0x001b:
case 0x001d:
case 0x001e:
if (len != sizeof(u16)) {
bt_dev_warn(hdev, "invalid length %d, exp %zu for type %d",
len, sizeof(u16), type);
return mgmt_cmd_status(sk, hdev->id,
MGMT_OP_SET_DEF_SYSTEM_CONFIG,
MGMT_STATUS_INVALID_PARAMS);
}
break;
default:
bt_dev_warn(hdev, "unsupported parameter %u", type);
break;
}
buffer_left -= exp_len;
buffer += exp_len;
}
buffer_left = data_len;
buffer = data;
while (buffer_left >= sizeof(struct mgmt_tlv)) {
const u8 len = TO_TLV(buffer)->length;
const u16 exp_len = sizeof(struct mgmt_tlv) +
len;
const u16 type = le16_to_cpu(TO_TLV(buffer)->type);
switch (type) {
case 0x0000:
hdev->def_page_scan_type = TLV_GET_LE16(buffer);
break;
case 0x0001:
hdev->def_page_scan_int = TLV_GET_LE16(buffer);
break;
case 0x0002:
hdev->def_page_scan_window = TLV_GET_LE16(buffer);
break;
case 0x0003:
hdev->def_inq_scan_type = TLV_GET_LE16(buffer);
break;
case 0x0004:
hdev->def_inq_scan_int = TLV_GET_LE16(buffer);
break;
case 0x0005:
hdev->def_inq_scan_window = TLV_GET_LE16(buffer);
break;
case 0x0006:
hdev->def_br_lsto = TLV_GET_LE16(buffer);
break;
case 0x0007:
hdev->def_page_timeout = TLV_GET_LE16(buffer);
break;
case 0x0008:
hdev->sniff_min_interval = TLV_GET_LE16(buffer);
break;
case 0x0009:
hdev->sniff_max_interval = TLV_GET_LE16(buffer);
break;
case 0x000a:
hdev->le_adv_min_interval = TLV_GET_LE16(buffer);
break;
case 0x000b:
hdev->le_adv_max_interval = TLV_GET_LE16(buffer);
break;
case 0x000c:
hdev->def_multi_adv_rotation_duration =
TLV_GET_LE16(buffer);
break;
case 0x000d:
hdev->le_scan_interval = TLV_GET_LE16(buffer);
break;
case 0x000e:
hdev->le_scan_window = TLV_GET_LE16(buffer);
break;
case 0x000f:
hdev->le_scan_int_suspend = TLV_GET_LE16(buffer);
break;
case 0x0010:
hdev->le_scan_window_suspend = TLV_GET_LE16(buffer);
break;
case 0x0011:
hdev->le_scan_int_discovery = TLV_GET_LE16(buffer);
break;
case 0x00012:
hdev->le_scan_window_discovery = TLV_GET_LE16(buffer);
break;
case 0x00013:
hdev->le_scan_int_adv_monitor = TLV_GET_LE16(buffer);
break;
case 0x00014:
hdev->le_scan_window_adv_monitor = TLV_GET_LE16(buffer);
break;
case 0x00015:
hdev->le_scan_int_connect = TLV_GET_LE16(buffer);
break;
case 0x00016:
hdev->le_scan_window_connect = TLV_GET_LE16(buffer);
break;
case 0x00017:
hdev->le_conn_min_interval = TLV_GET_LE16(buffer);
break;
case 0x00018:
hdev->le_conn_max_interval = TLV_GET_LE16(buffer);
break;
case 0x00019:
hdev->le_conn_latency = TLV_GET_LE16(buffer);
break;
case 0x0001a:
hdev->le_supv_timeout = TLV_GET_LE16(buffer);
break;
case 0x0001b:
hdev->def_le_autoconnect_timeout =
msecs_to_jiffies(TLV_GET_LE16(buffer));
break;
case 0x0001d:
hdev->advmon_allowlist_duration = TLV_GET_LE16(buffer);
break;
case 0x0001e:
hdev->advmon_no_filter_duration = TLV_GET_LE16(buffer);
break;
default:
bt_dev_warn(hdev, "unsupported parameter %u", type);
break;
}
buffer_left -= exp_len;
buffer += exp_len;
}
return mgmt_cmd_complete(sk, hdev->id,
MGMT_OP_SET_DEF_SYSTEM_CONFIG, 0, NULL, 0);
}
int read_def_runtime_config(struct sock *sk, struct hci_dev *hdev, void *data,
u16 data_len)
{
bt_dev_dbg(hdev, "sock %p", sk);
return mgmt_cmd_complete(sk, hdev->id,
MGMT_OP_READ_DEF_RUNTIME_CONFIG, 0, NULL, 0);
}
int set_def_runtime_config(struct sock *sk, struct hci_dev *hdev, void *data,
u16 data_len)
{
bt_dev_dbg(hdev, "sock %p", sk);
return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_DEF_SYSTEM_CONFIG,
MGMT_STATUS_INVALID_PARAMS);
}
Reference in New Issue View Git Blame Copy Permalink