This is a note to let you know that I've just added the patch titled
Bluetooth: Add support for reading AOSP vendor capabilities
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
bluetooth-add-support-for-reading-aosp-vendor-capabi.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit a18146e51c874d5e9cfddb143e56023462004f3f
Author: Marcel Holtmann <marcel@xxxxxxxxxxxx>
Date: Tue Apr 6 21:55:52 2021 +0200
Bluetooth: Add support for reading AOSP vendor capabilities
[ Upstream commit f67743f9e03a67dbbf931d1787e6faf50766e521 ]
When drivers indicate support for AOSP vendor extension, initialize them
and read its capabilities.
Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
Stable-dep-of: 51eda36d33e4 ("Bluetooth: SCO: Fix not validating setsockopt user input")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 33873266b2bc7..daafca376cb7c 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -569,6 +569,10 @@ struct hci_dev {
void *msft_data;
#endif
+#if IS_ENABLED(CONFIG_BT_AOSPEXT)
+ bool aosp_capable;
+#endif
+
int (*open)(struct hci_dev *hdev);
int (*close)(struct hci_dev *hdev);
int (*flush)(struct hci_dev *hdev);
@@ -1222,6 +1226,13 @@ static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
#endif
}
+static inline void hci_set_aosp_capable(struct hci_dev *hdev)
+{
+#if IS_ENABLED(CONFIG_BT_AOSPEXT)
+ hdev->aosp_capable = true;
+#endif
+}
+
int hci_dev_open(__u16 dev);
int hci_dev_close(__u16 dev);
int hci_dev_do_close(struct hci_dev *hdev);
diff --git a/net/bluetooth/Kconfig b/net/bluetooth/Kconfig
index 64e669acd42f9..11a563d95e67b 100644
--- a/net/bluetooth/Kconfig
+++ b/net/bluetooth/Kconfig
@@ -99,6 +99,13 @@ config BT_MSFTEXT
This options enables support for the Microsoft defined HCI
vendor extensions.
+config BT_AOSPEXT
+ bool "Enable Android Open Source Project extensions"
+ depends on BT
+ help
+ This options enables support for the Android Open Source
+ Project defined HCI vendor extensions.
+
config BT_DEBUGFS
bool "Export Bluetooth internals in debugfs"
depends on BT && DEBUG_FS
diff --git a/net/bluetooth/Makefile b/net/bluetooth/Makefile
index 1c645fba8c493..cc0995301f93f 100644
--- a/net/bluetooth/Makefile
+++ b/net/bluetooth/Makefile
@@ -20,5 +20,6 @@ bluetooth-$(CONFIG_BT_BREDR) += sco.o
bluetooth-$(CONFIG_BT_HS) += a2mp.o amp.o
bluetooth-$(CONFIG_BT_LEDS) += leds.o
bluetooth-$(CONFIG_BT_MSFTEXT) += msft.o
+bluetooth-$(CONFIG_BT_AOSPEXT) += aosp.o
bluetooth-$(CONFIG_BT_DEBUGFS) += hci_debugfs.o
bluetooth-$(CONFIG_BT_SELFTEST) += selftest.o
diff --git a/net/bluetooth/aosp.c b/net/bluetooth/aosp.c
new file mode 100644
index 0000000000000..a1b7762335a51
--- /dev/null
+++ b/net/bluetooth/aosp.c
@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2021 Intel Corporation
+ */
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "aosp.h"
+
+void aosp_do_open(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+
+ if (!hdev->aosp_capable)
+ return;
+
+ bt_dev_dbg(hdev, "Initialize AOSP extension");
+
+ /* LE Get Vendor Capabilities Command */
+ skb = __hci_cmd_sync(hdev, hci_opcode_pack(0x3f, 0x153), 0, NULL,
+ HCI_CMD_TIMEOUT);
+ if (IS_ERR(skb))
+ return;
+
+ kfree_skb(skb);
+}
+
+void aosp_do_close(struct hci_dev *hdev)
+{
+ if (!hdev->aosp_capable)
+ return;
+
+ bt_dev_dbg(hdev, "Cleanup of AOSP extension");
+}
diff --git a/net/bluetooth/aosp.h b/net/bluetooth/aosp.h
new file mode 100644
index 0000000000000..328fc6d39f703
--- /dev/null
+++ b/net/bluetooth/aosp.h
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2021 Intel Corporation
+ */
+
+#if IS_ENABLED(CONFIG_BT_AOSPEXT)
+
+void aosp_do_open(struct hci_dev *hdev);
+void aosp_do_close(struct hci_dev *hdev);
+
+#else
+
+static inline void aosp_do_open(struct hci_dev *hdev) {}
+static inline void aosp_do_close(struct hci_dev *hdev) {}
+
+#endif
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index b9cf5bc9364c1..f4fc5a81ae928 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -44,6 +44,7 @@
#include "smp.h"
#include "leds.h"
#include "msft.h"
+#include "aosp.h"
static void hci_rx_work(struct work_struct *work);
static void hci_cmd_work(struct work_struct *work);
@@ -1586,6 +1587,7 @@ static int hci_dev_do_open(struct hci_dev *hdev)
ret = hdev->set_diag(hdev, true);
msft_do_open(hdev);
+ aosp_do_open(hdev);
clear_bit(HCI_INIT, &hdev->flags);
@@ -1788,6 +1790,7 @@ int hci_dev_do_close(struct hci_dev *hdev)
hci_sock_dev_event(hdev, HCI_DEV_DOWN);
+ aosp_do_close(hdev);
msft_do_close(hdev);
if (hdev->flush)
