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Message-Id: <20200117132623.RFC.1.I797e2f4cb824299043e771f3ab9cef86ee09f4db@changeid>
Date: Fri, 17 Jan 2020 13:27:04 -0800
From: Abhishek Pandit-Subedi <abhishekpandit@...omium.org>
To: marcel@...tmann.org, luiz.dentz@...il.com, alainm@...omium.org
Cc: linux-bluetooth@...r.kernel.org,
chromeos-bluetooth-upstreaming@...omium.org,
Abhishek Pandit-Subedi <abhishekpandit@...omium.org>,
"David S. Miller" <davem@...emloft.net>,
Johan Hedberg <johan.hedberg@...il.com>,
netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [RFC PATCH 1/2] Bluetooth: Add mgmt op set_wake_capable
When the system is suspended, only some connected Bluetooth devices
cause user input that should wake the system (mostly HID devices). Add
a list to keep track of devices that can wake the system and add
a management API to let userspace tell the kernel whether a device is
wake capable or not.
Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@...omium.org>
---
include/net/bluetooth/hci_core.h | 1 +
include/net/bluetooth/mgmt.h | 7 ++++++
net/bluetooth/hci_core.c | 1 +
net/bluetooth/mgmt.c | 42 ++++++++++++++++++++++++++++++++
4 files changed, 51 insertions(+)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 89ecf0a80aa1..ce4bebcb0265 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -394,6 +394,7 @@ struct hci_dev {
struct list_head mgmt_pending;
struct list_head blacklist;
struct list_head whitelist;
+ struct list_head wakeable;
struct list_head uuids;
struct list_head link_keys;
struct list_head long_term_keys;
diff --git a/include/net/bluetooth/mgmt.h b/include/net/bluetooth/mgmt.h
index a90666af05bd..283ba5320bdb 100644
--- a/include/net/bluetooth/mgmt.h
+++ b/include/net/bluetooth/mgmt.h
@@ -671,6 +671,13 @@ struct mgmt_cp_set_blocked_keys {
} __packed;
#define MGMT_OP_SET_BLOCKED_KEYS_SIZE 2
+#define MGMT_OP_SET_WAKE_CAPABLE 0x0047
+#define MGMT_SET_WAKE_CAPABLE_SIZE 8
+struct mgmt_cp_set_wake_capable {
+ struct mgmt_addr_info addr;
+ u8 wake_capable;
+} __packed;
+
#define MGMT_EV_CMD_COMPLETE 0x0001
struct mgmt_ev_cmd_complete {
__le16 opcode;
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 1ca7508b6ca7..7057b9b65173 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3299,6 +3299,7 @@ struct hci_dev *hci_alloc_dev(void)
INIT_LIST_HEAD(&hdev->mgmt_pending);
INIT_LIST_HEAD(&hdev->blacklist);
INIT_LIST_HEAD(&hdev->whitelist);
+ INIT_LIST_HEAD(&hdev->wakeable);
INIT_LIST_HEAD(&hdev->uuids);
INIT_LIST_HEAD(&hdev->link_keys);
INIT_LIST_HEAD(&hdev->long_term_keys);
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 0dc610faab70..95092130f16c 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -106,7 +106,10 @@ static const u16 mgmt_commands[] = {
MGMT_OP_START_LIMITED_DISCOVERY,
MGMT_OP_READ_EXT_INFO,
MGMT_OP_SET_APPEARANCE,
+ MGMT_OP_GET_PHY_CONFIGURATION,
+ MGMT_OP_SET_PHY_CONFIGURATION,
MGMT_OP_SET_BLOCKED_KEYS,
+ MGMT_OP_SET_WAKE_CAPABLE,
};
static const u16 mgmt_events[] = {
@@ -4663,6 +4666,37 @@ static int set_fast_connectable(struct sock *sk, struct hci_dev *hdev,
return err;
}
+static int set_wake_capable(struct sock *sk, struct hci_dev *hdev, void *data,
+ u16 len)
+{
+ int err;
+ u8 status;
+ struct mgmt_cp_set_wake_capable *cp = data;
+ u8 addr_type = cp->addr.type == BDADDR_BREDR ?
+ cp->addr.type :
+ le_addr_type(cp->addr.type);
+
+ BT_DBG("Set wake capable %pMR (type 0x%x) = 0x%x\n", &cp->addr.bdaddr,
+ addr_type, cp->wake_capable);
+
+ if (cp->wake_capable)
+ err = hci_bdaddr_list_add(&hdev->wakeable, &cp->addr.bdaddr,
+ addr_type);
+ else
+ err = hci_bdaddr_list_del(&hdev->wakeable, &cp->addr.bdaddr,
+ addr_type);
+
+ if (!err || err == -EEXIST || err == -ENOENT)
+ status = MGMT_STATUS_SUCCESS;
+ else
+ status = MGMT_STATUS_FAILED;
+
+ err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_WAKE_CAPABLE, status,
+ cp, sizeof(*cp));
+
+ return err;
+}
+
static void set_bredr_complete(struct hci_dev *hdev, u8 status, u16 opcode)
{
struct mgmt_pending_cmd *cmd;
@@ -5791,6 +5825,13 @@ static int remove_device(struct sock *sk, struct hci_dev *hdev,
err = hci_bdaddr_list_del(&hdev->whitelist,
&cp->addr.bdaddr,
cp->addr.type);
+
+ /* Don't check result since it either succeeds or device
+ * wasn't there (not wakeable or invalid params as
+ * covered by deleting from whitelist).
+ */
+ hci_bdaddr_list_del(&hdev->wakeable, &cp->addr.bdaddr,
+ cp->addr.type);
if (err) {
err = mgmt_cmd_complete(sk, hdev->id,
MGMT_OP_REMOVE_DEVICE,
@@ -6990,6 +7031,7 @@ static const struct hci_mgmt_handler mgmt_handlers[] = {
{ set_phy_configuration, MGMT_SET_PHY_CONFIGURATION_SIZE },
{ set_blocked_keys, MGMT_OP_SET_BLOCKED_KEYS_SIZE,
HCI_MGMT_VAR_LEN },
+ { set_wake_capable, MGMT_SET_WAKE_CAPABLE_SIZE },
};
void mgmt_index_added(struct hci_dev *hdev)
--
2.25.0.341.g760bfbb309-goog
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