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Bluetooth: Add support for experimental features configuration

Browse source 
To enable platform specific experimental features, introduce this new set of
management commands and events.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Marcel Holtmann 2020-05-06 09:57:51 +02:00
parent 568602457c
commit a10c907ce0
3 changed files with 86 additions and 0 deletions
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1
include/net/bluetooth/hci.h
View file

@ -258,6 +258,7 @@ enum {
HCI_MGMT_DEV_CLASS_EVENTS,
HCI_MGMT_LOCAL_NAME_EVENTS,
HCI_MGMT_OOB_DATA_EVENTS,
HCI_MGMT_EXP_FEATURE_EVENTS,
};
/*

27
include/net/bluetooth/mgmt.h
View file

@ -681,6 +681,27 @@ struct mgmt_rp_read_security_info {
__u8 sec[];
} __packed;
#define MGMT_OP_READ_EXP_FEATURES_INFO 0x0049
#define MGMT_READ_EXP_FEATURES_INFO_SIZE 0
struct mgmt_rp_read_exp_features_info {
__le16 feature_count;
struct {
__u8 uuid[16];
__le32 flags;
} features[];
} __packed;
#define MGMT_OP_SET_EXP_FEATURE 0x004a
struct mgmt_cp_set_exp_feature {
__u8 uuid[16];
__u8 param[];
} __packed;
#define MGMT_SET_EXP_FEATURE_SIZE 16
struct mgmt_rp_set_exp_feature {
__u8 uuid[16];
__le32 flags;
} __packed;
#define MGMT_EV_CMD_COMPLETE 0x0001
struct mgmt_ev_cmd_complete {
__le16 opcode;
@ -906,3 +927,9 @@ struct mgmt_ev_ext_info_changed {
struct mgmt_ev_phy_configuration_changed {
__le32 selected_phys;
} __packed;
#define MGMT_EV_EXP_FEATURE_CHANGED 0x0027
struct mgmt_ev_exp_feature_changed {
__u8 uuid[16];
__le32 flags;
} __packed;

58
net/bluetooth/mgmt.c
View file

@ -109,6 +109,8 @@ static const u16 mgmt_commands[] = {
MGMT_OP_SET_BLOCKED_KEYS,
MGMT_OP_SET_WIDEBAND_SPEECH,
MGMT_OP_READ_SECURITY_INFO,
MGMT_OP_READ_EXP_FEATURES_INFO,
MGMT_OP_SET_EXP_FEATURE,
};
static const u16 mgmt_events[] = {
@ -148,6 +150,7 @@ static const u16 mgmt_events[] = {
MGMT_EV_ADVERTISING_REMOVED,
MGMT_EV_EXT_INFO_CHANGED,
MGMT_EV_PHY_CONFIGURATION_CHANGED,
MGMT_EV_EXP_FEATURE_CHANGED,
};
static const u16 mgmt_untrusted_commands[] = {
@ -158,6 +161,7 @@ static const u16 mgmt_untrusted_commands[] = {
MGMT_OP_READ_EXT_INDEX_LIST,
MGMT_OP_READ_EXT_INFO,
MGMT_OP_READ_SECURITY_INFO,
MGMT_OP_READ_EXP_FEATURES_INFO,
};
static const u16 mgmt_untrusted_events[] = {
@ -172,6 +176,7 @@ static const u16 mgmt_untrusted_events[] = {
MGMT_EV_EXT_INDEX_ADDED,
MGMT_EV_EXT_INDEX_REMOVED,
MGMT_EV_EXT_INFO_CHANGED,
MGMT_EV_EXP_FEATURE_CHANGED,
};
#define CACHE_TIMEOUT msecs_to_jiffies(2 * 1000)
@ -3710,6 +3715,53 @@ static int read_security_info(struct sock *sk, struct hci_dev *hdev,
rp, sizeof(*rp) + sec_len);
}
static int read_exp_features_info(struct sock *sk, struct hci_dev *hdev,
void *data, u16 data_len)
{
char buf[42];
struct mgmt_rp_read_exp_features_info *rp = (void *)buf;
u16 idx = 0;
bt_dev_dbg(hdev, "sock %p", sk);
memset(&buf, 0, sizeof(buf));
rp->feature_count = cpu_to_le16(idx);
/* After reading the experimental features information, enable
* the events to update client on any future change.
*/
hci_sock_set_flag(sk, HCI_MGMT_EXP_FEATURE_EVENTS);
return mgmt_cmd_complete(sk, hdev ? hdev->id : MGMT_INDEX_NONE,
MGMT_OP_READ_EXP_FEATURES_INFO,
0, rp, sizeof(*rp) + (20 * idx));
}
static int set_exp_feature(struct sock *sk, struct hci_dev *hdev,
void *data, u16 data_len)
{
struct mgmt_cp_set_exp_feature *cp = data;
struct mgmt_rp_set_exp_feature rp;
bt_dev_dbg(hdev, "sock %p", sk);
if (!memcmp(cp->uuid, ZERO_KEY, 16)) {
memset(rp.uuid, 0, 16);
rp.flags = cpu_to_le32(0);
hci_sock_set_flag(sk, HCI_MGMT_EXP_FEATURE_EVENTS);
return mgmt_cmd_complete(sk, hdev ? hdev->id : MGMT_INDEX_NONE,
MGMT_OP_SET_EXP_FEATURE, 0,
&rp, sizeof(rp));
}
return mgmt_cmd_status(sk, hdev ? hdev->id : MGMT_INDEX_NONE,
MGMT_OP_SET_EXP_FEATURE,
MGMT_STATUS_NOT_SUPPORTED);
}
static void read_local_oob_data_complete(struct hci_dev *hdev, u8 status,
u16 opcode, struct sk_buff *skb)
{
@ -7152,6 +7204,12 @@ static const struct hci_mgmt_handler mgmt_handlers[] = {
{ set_wideband_speech, MGMT_SETTING_SIZE },
{ read_security_info, MGMT_READ_SECURITY_INFO_SIZE,
HCI_MGMT_UNTRUSTED },
{ read_exp_features_info, MGMT_READ_EXP_FEATURES_INFO_SIZE,
HCI_MGMT_UNTRUSTED |
HCI_MGMT_HDEV_OPTIONAL },
{ set_exp_feature, MGMT_SET_EXP_FEATURE_SIZE,
HCI_MGMT_VAR_LEN |
HCI_MGMT_HDEV_OPTIONAL },
};
void mgmt_index_added(struct hci_dev *hdev)