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linux/net/bluetooth/mgmt_config.c
Howard Chung 80af16a3e4 Bluetooth: Add toggle to switch off interleave scan 
This patch add a configurable parameter to switch off the interleave
scan feature.

Signed-off-by: Howard Chung <howardchung@google.com>
Reviewed-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-07 17:01:00 +02:00

347 lines
9.3 KiB
C
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// 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_name_) \
struct {\
struct mgmt_tlv entry; \
__le16 value; \
} __packed _param_name_
#define HDEV_PARAM_U8(_param_name_) \
struct {\
struct mgmt_tlv entry; \
__u8 value; \
} __packed _param_name_
#define TLV_SET_U16(_param_code_, _param_name_) \
{ \
{ cpu_to_le16(_param_code_), sizeof(__u16) }, \
cpu_to_le16(hdev->_param_name_) \
}
#define TLV_SET_U8(_param_code_, _param_name_) \
{ \
{ cpu_to_le16(_param_code_), sizeof(__u8) }, \
hdev->_param_name_ \
}
#define TLV_SET_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)
{
int ret;
struct mgmt_rp_read_def_system_config {
/* Please see mgmt-api.txt for documentation of these values */
HDEV_PARAM_U16(def_page_scan_type);
HDEV_PARAM_U16(def_page_scan_int);
HDEV_PARAM_U16(def_page_scan_window);
HDEV_PARAM_U16(def_inq_scan_type);
HDEV_PARAM_U16(def_inq_scan_int);
HDEV_PARAM_U16(def_inq_scan_window);
HDEV_PARAM_U16(def_br_lsto);
HDEV_PARAM_U16(def_page_timeout);
HDEV_PARAM_U16(sniff_min_interval);
HDEV_PARAM_U16(sniff_max_interval);
HDEV_PARAM_U16(le_adv_min_interval);
HDEV_PARAM_U16(le_adv_max_interval);
HDEV_PARAM_U16(def_multi_adv_rotation_duration);
HDEV_PARAM_U16(le_scan_interval);
HDEV_PARAM_U16(le_scan_window);
HDEV_PARAM_U16(le_scan_int_suspend);
HDEV_PARAM_U16(le_scan_window_suspend);
HDEV_PARAM_U16(le_scan_int_discovery);
HDEV_PARAM_U16(le_scan_window_discovery);
HDEV_PARAM_U16(le_scan_int_adv_monitor);
HDEV_PARAM_U16(le_scan_window_adv_monitor);
HDEV_PARAM_U16(le_scan_int_connect);
HDEV_PARAM_U16(le_scan_window_connect);
HDEV_PARAM_U16(le_conn_min_interval);
HDEV_PARAM_U16(le_conn_max_interval);
HDEV_PARAM_U16(le_conn_latency);
HDEV_PARAM_U16(le_supv_timeout);
HDEV_PARAM_U16(def_le_autoconnect_timeout);
HDEV_PARAM_U16(advmon_allowlist_duration);
HDEV_PARAM_U16(advmon_no_filter_duration);
HDEV_PARAM_U8(enable_advmon_interleave_scan);
} __packed rp = {
TLV_SET_U16(0x0000, def_page_scan_type),
TLV_SET_U16(0x0001, def_page_scan_int),
TLV_SET_U16(0x0002, def_page_scan_window),
TLV_SET_U16(0x0003, def_inq_scan_type),
TLV_SET_U16(0x0004, def_inq_scan_int),
TLV_SET_U16(0x0005, def_inq_scan_window),
TLV_SET_U16(0x0006, def_br_lsto),
TLV_SET_U16(0x0007, def_page_timeout),
TLV_SET_U16(0x0008, sniff_min_interval),
TLV_SET_U16(0x0009, sniff_max_interval),
TLV_SET_U16(0x000a, le_adv_min_interval),
TLV_SET_U16(0x000b, le_adv_max_interval),
TLV_SET_U16(0x000c, def_multi_adv_rotation_duration),
TLV_SET_U16(0x000d, le_scan_interval),
TLV_SET_U16(0x000e, le_scan_window),
TLV_SET_U16(0x000f, le_scan_int_suspend),
TLV_SET_U16(0x0010, le_scan_window_suspend),
TLV_SET_U16(0x0011, le_scan_int_discovery),
TLV_SET_U16(0x0012, le_scan_window_discovery),
TLV_SET_U16(0x0013, le_scan_int_adv_monitor),
TLV_SET_U16(0x0014, le_scan_window_adv_monitor),
TLV_SET_U16(0x0015, le_scan_int_connect),
TLV_SET_U16(0x0016, le_scan_window_connect),
TLV_SET_U16(0x0017, le_conn_min_interval),
TLV_SET_U16(0x0018, le_conn_max_interval),
TLV_SET_U16(0x0019, le_conn_latency),
TLV_SET_U16(0x001a, le_supv_timeout),
TLV_SET_U16_JIFFIES_TO_MSECS(0x001b,
def_le_autoconnect_timeout),
TLV_SET_U16(0x001d, advmon_allowlist_duration),
TLV_SET_U16(0x001e, advmon_no_filter_duration),
TLV_SET_U8(0x001f, enable_advmon_interleave_scan),
};
bt_dev_dbg(hdev, "sock %p", sk);
ret = mgmt_cmd_complete(sk, hdev->id,
MGMT_OP_READ_DEF_SYSTEM_CONFIG,
0, &rp, sizeof(rp));
return ret;
}
#define TO_TLV(x) ((struct mgmt_tlv *)(x))
#define TLV_GET_LE16(tlv) le16_to_cpu(*((__le16 *)(TO_TLV(tlv)->value)))
#define TLV_GET_U8(tlv) (*((__u8 *)(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;
size_t exp_type_len;
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:
exp_type_len = sizeof(u16);
break;
case 0x001f:
exp_type_len = sizeof(u8);
break;
default:
exp_type_len = 0;
bt_dev_warn(hdev, "unsupported parameter %u", type);
break;
}
if (exp_type_len && len != exp_type_len) {
bt_dev_warn(hdev, "invalid length %d, exp %zu for type %d",
len, exp_type_len, type);
return mgmt_cmd_status(sk, hdev->id,
MGMT_OP_SET_DEF_SYSTEM_CONFIG,
MGMT_STATUS_INVALID_PARAMS);
}
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;
case 0x0001f:
hdev->enable_advmon_interleave_scan = TLV_GET_U8(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);
}
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