2021-11-02 07:20:01

by Joseph Hwang

[permalink] [raw]
Subject: [PATCH v7 1/2] Bluetooth: Add struct of reading AOSP vendor capabilities

This patch adds the struct of reading AOSP vendor capabilities.
New capabilities are added incrementally. Note that the
version_supported octets will be used to determine whether a
capability has been defined for the version.

Signed-off-by: Joseph Hwang <[email protected]>

---

Changes in v7:
- Use the full struct aosp_rp_le_get_vendor_capa. If the
version_supported is >= 98, check bluetooth_quality_report_support.
- Use __le16 and __le32.
- Use proper bt_dev_err and bt_dev_warn per review comments.
- Skip unnecessary bt_dev_dbg.
- Remove unnecessary rp->status check.
- Skip unnecessary check about version_supported on versions that we
do not care about. For now, we only care about quality report support.
- Add the define for the length of the struct.
- Mediatek will submit a separate patch to enable aosp.

Changes in v6:
- Add historical versions of struct aosp_rp_le_get_vendor_capabilities.
- Perform the basic check about the struct length.
- Through the version, bluetooth_quality_report_support can be checked.

Changes in v5:
- This is a new patch.
- Add struct aosp_rp_le_get_vendor_capabilities so that next patch
can determine whether a particular capability is supported or not.

include/net/bluetooth/hci_core.h | 1 +
net/bluetooth/aosp.c | 83 +++++++++++++++++++++++++++++++-
2 files changed, 83 insertions(+), 1 deletion(-)

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 53a8c7d3a4bf..b5f061882c10 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -603,6 +603,7 @@ struct hci_dev {

#if IS_ENABLED(CONFIG_BT_AOSPEXT)
bool aosp_capable;
+ bool aosp_quality_report;
#endif

int (*open)(struct hci_dev *hdev);
diff --git a/net/bluetooth/aosp.c b/net/bluetooth/aosp.c
index a1b7762335a5..0d4f1702ce35 100644
--- a/net/bluetooth/aosp.c
+++ b/net/bluetooth/aosp.c
@@ -8,9 +8,43 @@

#include "aosp.h"

+/* Command complete parameters of LE_Get_Vendor_Capabilities_Command
+ * The parameters grow over time. The base version that declares the
+ * version_supported field is v0.95. Refer to
+ * https://cs.android.com/android/platform/superproject/+/master:system/
+ * bt/gd/hci/controller.cc;l=452?q=le_get_vendor_capabilities_handler
+ */
+struct aosp_rp_le_get_vendor_capa {
+ /* v0.95: 15 octets */
+ __u8 status;
+ __u8 max_advt_instances;
+ __u8 offloaded_resolution_of_private_address;
+ __le16 total_scan_results_storage;
+ __u8 max_irk_list_sz;
+ __u8 filtering_support;
+ __u8 max_filter;
+ __u8 activity_energy_info_support;
+ __le16 version_supported;
+ __le16 total_num_of_advt_tracked;
+ __u8 extended_scan_support;
+ __u8 debug_logging_supported;
+ /* v0.96: 16 octets */
+ __u8 le_address_generation_offloading_support;
+ /* v0.98: 21 octets */
+ __le32 a2dp_source_offload_capability_mask;
+ __u8 bluetooth_quality_report_support;
+ /* v1.00: 25 octets */
+ __le32 dynamic_audio_buffer_support;
+} __packed;
+
+#define VENDOR_CAPA_BASE_SIZE 15
+#define VENDOR_CAPA_0_98_SIZE 21
+
void aosp_do_open(struct hci_dev *hdev)
{
struct sk_buff *skb;
+ struct aosp_rp_le_get_vendor_capa *rp;
+ u16 version_supported;

if (!hdev->aosp_capable)
return;
@@ -20,9 +54,56 @@ void aosp_do_open(struct hci_dev *hdev)
/* LE Get Vendor Capabilities Command */
skb = __hci_cmd_sync(hdev, hci_opcode_pack(0x3f, 0x153), 0, NULL,
HCI_CMD_TIMEOUT);
- if (IS_ERR(skb))
+ if (IS_ERR(skb)) {
+ bt_dev_err(hdev, "AOSP get vendor capabilities (%ld)",
+ PTR_ERR(skb));
return;
+ }
+
+ /* A basic length check */
+ if (skb->len < VENDOR_CAPA_BASE_SIZE)
+ goto length_error;
+
+ rp = (struct aosp_rp_le_get_vendor_capa *)skb->data;
+
+ version_supported = le16_to_cpu(rp->version_supported);
+ /* AOSP displays the verion number like v0.98, v1.00, etc. */
+ bt_dev_info(hdev, "AOSP version v%u.%02u",
+ version_supported >> 8, version_supported & 0xff);
+
+ /* Do not support very old versions. */
+ if (version_supported < 95) {
+ bt_dev_warn(hdev, "AOSP capabilities version %u too old",
+ version_supported);
+ goto done;
+ }
+
+ if (version_supported >= 95 && version_supported < 98) {
+ bt_dev_warn(hdev, "AOSP quality report is not supported");
+ goto done;
+ }
+
+ if (version_supported >= 98) {
+ if (skb->len < VENDOR_CAPA_0_98_SIZE)
+ goto length_error;
+
+ /* The bluetooth_quality_report_support is defined at version
+ * v0.98. Refer to
+ * https://cs.android.com/android/platform/superproject/+/
+ * master:system/bt/gd/hci/controller.cc;l=477
+ */
+ if (rp->bluetooth_quality_report_support) {
+ hdev->aosp_quality_report = true;
+ bt_dev_info(hdev, "AOSP quality report is supported");
+ }
+ }
+
+ goto done;
+
+length_error:
+ bt_dev_err(hdev, "AOSP capabilities length %d too short", skb->len);

+done:
kfree_skb(skb);
}

--
2.33.1.1089.g2158813163f-goog


2021-11-02 07:20:33

by Joseph Hwang

[permalink] [raw]
Subject: [PATCH v7 2/2] Bluetooth: aosp: Support AOSP Bluetooth Quality Report

This patch adds the support of the AOSP Bluetooth Quality Report
(BQR) events.

Multiple vendors have supported the AOSP Bluetooth Quality Report.
When a Bluetooth controller supports the capability, it can enable
the aosp capability through hci_set_aosp_capable. Then hci_core will
set up the hdev->aosp_set_quality_report callback through aosp_do_open
if the controller responds to support the quality report capability.

Note that Intel also supports a distinct telemetry quality report
specification. Intel sets up the hdev->set_quality_report callback
in the btusb driver module.

Reviewed-by: Miao-chen Chou <[email protected]>
Signed-off-by: Joseph Hwang <[email protected]>

---

Changes in v7:
- Remove the unnecessary debug print.

Changes in v6:
- Use the decimal version instead of hexadecimal version to be
consistent with the AOSP specification.
- Move the code of checking the bluetooth_quality_report_support field
to the previous patch.

Changes in v5:
- Fix the patch per
[RFC PATCH] Bluetooth: Add framework for AOSP quality report setting
- Declare aosp_set_quality_report.
- Use aosp_do_open() to set hdev->aosp_set_quality_report.
- Add aosp_has_quality_report().
- In mgmt, use hdev->aosp_set_quality_report and
hdev->set_quality_report separately.

Changes in v4:
- Move the AOSP BQR support from the driver level to net/bluetooth/aosp.
- Fix the drivers to use hci_set_aosp_capable to enable aosp.
- Add Mediatek to support the capability too.

Changes in v3:
- Fix the auto build test ERROR
"undefined symbol: btandroid_set_quality_report" that occurred
with some kernel configs.
- Note that the mgmt-tester "Read Exp Feature - Success" failed.
But on my test device, the same test passed. Please kindly let me
know what may be going wrong. These patches do not actually
modify read/set experimental features.
- As to CheckPatch failed. No need to modify the MAINTAINERS file.
Thanks.

Changes in v2:
- Fix the titles of patches 2/3 and 3/3 and reduce their lengths.

net/bluetooth/aosp.c | 87 ++++++++++++++++++++++++++++++++++++++++++++
net/bluetooth/aosp.h | 13 +++++++
net/bluetooth/mgmt.c | 17 ++++++---
3 files changed, 112 insertions(+), 5 deletions(-)

diff --git a/net/bluetooth/aosp.c b/net/bluetooth/aosp.c
index 0d4f1702ce35..86ac6e92ae3d 100644
--- a/net/bluetooth/aosp.c
+++ b/net/bluetooth/aosp.c
@@ -114,3 +114,90 @@ void aosp_do_close(struct hci_dev *hdev)

bt_dev_dbg(hdev, "Cleanup of AOSP extension");
}
+
+/* BQR command */
+#define BQR_OPCODE hci_opcode_pack(0x3f, 0x015e)
+
+/* BQR report action */
+#define REPORT_ACTION_ADD 0x00
+#define REPORT_ACTION_DELETE 0x01
+#define REPORT_ACTION_CLEAR 0x02
+
+/* BQR event masks */
+#define QUALITY_MONITORING BIT(0)
+#define APPRAOCHING_LSTO BIT(1)
+#define A2DP_AUDIO_CHOPPY BIT(2)
+#define SCO_VOICE_CHOPPY BIT(3)
+
+#define DEFAULT_BQR_EVENT_MASK (QUALITY_MONITORING | APPRAOCHING_LSTO | \
+ A2DP_AUDIO_CHOPPY | SCO_VOICE_CHOPPY)
+
+/* Reporting at milliseconds so as not to stress the controller too much.
+ * Range: 0 ~ 65535 ms
+ */
+#define DEFALUT_REPORT_INTERVAL_MS 5000
+
+struct aosp_bqr_cp {
+ __u8 report_action;
+ __u32 event_mask;
+ __u16 min_report_interval;
+} __packed;
+
+static int enable_quality_report(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+ struct aosp_bqr_cp cp;
+
+ cp.report_action = REPORT_ACTION_ADD;
+ cp.event_mask = DEFAULT_BQR_EVENT_MASK;
+ cp.min_report_interval = DEFALUT_REPORT_INTERVAL_MS;
+
+ skb = __hci_cmd_sync(hdev, BQR_OPCODE, sizeof(cp), &cp,
+ HCI_CMD_TIMEOUT);
+ if (IS_ERR(skb)) {
+ bt_dev_err(hdev, "Enabling Android BQR failed (%ld)",
+ PTR_ERR(skb));
+ return PTR_ERR(skb);
+ }
+
+ kfree_skb(skb);
+ return 0;
+}
+
+static int disable_quality_report(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+ struct aosp_bqr_cp cp = { 0 };
+
+ cp.report_action = REPORT_ACTION_CLEAR;
+
+ skb = __hci_cmd_sync(hdev, BQR_OPCODE, sizeof(cp), &cp,
+ HCI_CMD_TIMEOUT);
+ if (IS_ERR(skb)) {
+ bt_dev_err(hdev, "Disabling Android BQR failed (%ld)",
+ PTR_ERR(skb));
+ return PTR_ERR(skb);
+ }
+
+ kfree_skb(skb);
+ return 0;
+}
+
+bool aosp_has_quality_report(struct hci_dev *hdev)
+{
+ return hdev->aosp_quality_report;
+}
+
+int aosp_set_quality_report(struct hci_dev *hdev, bool enable)
+{
+ if (!aosp_has_quality_report(hdev))
+ return -EOPNOTSUPP;
+
+ bt_dev_dbg(hdev, "quality report enable %d", enable);
+
+ /* Enable or disable the quality report feature. */
+ if (enable)
+ return enable_quality_report(hdev);
+ else
+ return disable_quality_report(hdev);
+}
diff --git a/net/bluetooth/aosp.h b/net/bluetooth/aosp.h
index 328fc6d39f70..2fd8886d51b2 100644
--- a/net/bluetooth/aosp.h
+++ b/net/bluetooth/aosp.h
@@ -8,9 +8,22 @@
void aosp_do_open(struct hci_dev *hdev);
void aosp_do_close(struct hci_dev *hdev);

+bool aosp_has_quality_report(struct hci_dev *hdev);
+int aosp_set_quality_report(struct hci_dev *hdev, bool enable);
+
#else

static inline void aosp_do_open(struct hci_dev *hdev) {}
static inline void aosp_do_close(struct hci_dev *hdev) {}

+static inline bool aosp_has_quality_report(struct hci_dev *hdev)
+{
+ return false;
+}
+
+static inline int aosp_set_quality_report(struct hci_dev *hdev, bool enable)
+{
+ return -EOPNOTSUPP;
+}
+
#endif
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index a7d35c138713..06384d761928 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -39,6 +39,7 @@
#include "mgmt_config.h"
#include "msft.h"
#include "eir.h"
+#include "aosp.h"

#define MGMT_VERSION 1
#define MGMT_REVISION 21
@@ -3934,7 +3935,8 @@ static int read_exp_features_info(struct sock *sk, struct hci_dev *hdev,
idx++;
}

- if (hdev && hdev->set_quality_report) {
+ if (hdev && (aosp_has_quality_report(hdev) ||
+ hdev->set_quality_report)) {
if (hci_dev_test_flag(hdev, HCI_QUALITY_REPORT))
flags = BIT(0);
else
@@ -4198,7 +4200,7 @@ static int set_quality_report_func(struct sock *sk, struct hci_dev *hdev,
val = !!cp->param[0];
changed = (val != hci_dev_test_flag(hdev, HCI_QUALITY_REPORT));

- if (!hdev->set_quality_report) {
+ if (!aosp_has_quality_report(hdev) && !hdev->set_quality_report) {
err = mgmt_cmd_status(sk, hdev->id,
MGMT_OP_SET_EXP_FEATURE,
MGMT_STATUS_NOT_SUPPORTED);
@@ -4206,13 +4208,18 @@ static int set_quality_report_func(struct sock *sk, struct hci_dev *hdev,
}

if (changed) {
- err = hdev->set_quality_report(hdev, val);
+ if (hdev->set_quality_report)
+ err = hdev->set_quality_report(hdev, val);
+ else
+ err = aosp_set_quality_report(hdev, val);
+
if (err) {
err = mgmt_cmd_status(sk, hdev->id,
MGMT_OP_SET_EXP_FEATURE,
MGMT_STATUS_FAILED);
goto unlock_quality_report;
}
+
if (val)
hci_dev_set_flag(hdev, HCI_QUALITY_REPORT);
else
@@ -4224,8 +4231,8 @@ static int set_quality_report_func(struct sock *sk, struct hci_dev *hdev,
memcpy(rp.uuid, quality_report_uuid, 16);
rp.flags = cpu_to_le32(val ? BIT(0) : 0);
hci_sock_set_flag(sk, HCI_MGMT_EXP_FEATURE_EVENTS);
- err = mgmt_cmd_complete(sk, hdev->id,
- MGMT_OP_SET_EXP_FEATURE, 0,
+
+ err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_EXP_FEATURE, 0,
&rp, sizeof(rp));

if (changed)
--
2.33.1.1089.g2158813163f-goog

2021-11-02 07:52:59

by Marcel Holtmann

[permalink] [raw]
Subject: Re: [PATCH v7 1/2] Bluetooth: Add struct of reading AOSP vendor capabilities

Hi Joseph,

> This patch adds the struct of reading AOSP vendor capabilities.
> New capabilities are added incrementally. Note that the
> version_supported octets will be used to determine whether a
> capability has been defined for the version.
>
> Signed-off-by: Joseph Hwang <[email protected]>
>
> ---
>
> Changes in v7:
> - Use the full struct aosp_rp_le_get_vendor_capa. If the
> version_supported is >= 98, check bluetooth_quality_report_support.
> - Use __le16 and __le32.
> - Use proper bt_dev_err and bt_dev_warn per review comments.
> - Skip unnecessary bt_dev_dbg.
> - Remove unnecessary rp->status check.
> - Skip unnecessary check about version_supported on versions that we
> do not care about. For now, we only care about quality report support.
> - Add the define for the length of the struct.
> - Mediatek will submit a separate patch to enable aosp.
>
> Changes in v6:
> - Add historical versions of struct aosp_rp_le_get_vendor_capabilities.
> - Perform the basic check about the struct length.
> - Through the version, bluetooth_quality_report_support can be checked.
>
> Changes in v5:
> - This is a new patch.
> - Add struct aosp_rp_le_get_vendor_capabilities so that next patch
> can determine whether a particular capability is supported or not.
>
> include/net/bluetooth/hci_core.h | 1 +
> net/bluetooth/aosp.c | 83 +++++++++++++++++++++++++++++++-
> 2 files changed, 83 insertions(+), 1 deletion(-)
>
> diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
> index 53a8c7d3a4bf..b5f061882c10 100644
> --- a/include/net/bluetooth/hci_core.h
> +++ b/include/net/bluetooth/hci_core.h
> @@ -603,6 +603,7 @@ struct hci_dev {
>
> #if IS_ENABLED(CONFIG_BT_AOSPEXT)
> bool aosp_capable;
> + bool aosp_quality_report;
> #endif
>
> int (*open)(struct hci_dev *hdev);
> diff --git a/net/bluetooth/aosp.c b/net/bluetooth/aosp.c
> index a1b7762335a5..0d4f1702ce35 100644
> --- a/net/bluetooth/aosp.c
> +++ b/net/bluetooth/aosp.c
> @@ -8,9 +8,43 @@
>
> #include "aosp.h"
>
> +/* Command complete parameters of LE_Get_Vendor_Capabilities_Command
> + * The parameters grow over time. The base version that declares the
> + * version_supported field is v0.95. Refer to
> + * https://cs.android.com/android/platform/superproject/+/master:system/
> + * bt/gd/hci/controller.cc;l=452?q=le_get_vendor_capabilities_handler
> + */
> +struct aosp_rp_le_get_vendor_capa {
> + /* v0.95: 15 octets */
> + __u8 status;
> + __u8 max_advt_instances;
> + __u8 offloaded_resolution_of_private_address;
> + __le16 total_scan_results_storage;
> + __u8 max_irk_list_sz;
> + __u8 filtering_support;
> + __u8 max_filter;
> + __u8 activity_energy_info_support;
> + __le16 version_supported;
> + __le16 total_num_of_advt_tracked;
> + __u8 extended_scan_support;
> + __u8 debug_logging_supported;
> + /* v0.96: 16 octets */
> + __u8 le_address_generation_offloading_support;
> + /* v0.98: 21 octets */
> + __le32 a2dp_source_offload_capability_mask;
> + __u8 bluetooth_quality_report_support;
> + /* v1.00: 25 octets */
> + __le32 dynamic_audio_buffer_support;
> +} __packed;
> +
> +#define VENDOR_CAPA_BASE_SIZE 15
> +#define VENDOR_CAPA_0_98_SIZE 21
> +
> void aosp_do_open(struct hci_dev *hdev)
> {
> struct sk_buff *skb;
> + struct aosp_rp_le_get_vendor_capa *rp;
> + u16 version_supported;
>
> if (!hdev->aosp_capable)
> return;
> @@ -20,9 +54,56 @@ void aosp_do_open(struct hci_dev *hdev)
> /* LE Get Vendor Capabilities Command */
> skb = __hci_cmd_sync(hdev, hci_opcode_pack(0x3f, 0x153), 0, NULL,
> HCI_CMD_TIMEOUT);
> - if (IS_ERR(skb))
> + if (IS_ERR(skb)) {
> + bt_dev_err(hdev, "AOSP get vendor capabilities (%ld)",
> + PTR_ERR(skb));
> return;
> + }
> +
> + /* A basic length check */
> + if (skb->len < VENDOR_CAPA_BASE_SIZE)
> + goto length_error;
> +
> + rp = (struct aosp_rp_le_get_vendor_capa *)skb->data;
> +
> + version_supported = le16_to_cpu(rp->version_supported);
> + /* AOSP displays the verion number like v0.98, v1.00, etc. */
> + bt_dev_info(hdev, "AOSP version v%u.%02u",
> + version_supported >> 8, version_supported & 0xff);

call it "AOSP extensions ..” to not confused it with the AOSP release version. I can also fix myself before applying if you like.

> +
> + /* Do not support very old versions. */
> + if (version_supported < 95) {
> + bt_dev_warn(hdev, "AOSP capabilities version %u too old",
> + version_supported);
> + goto done;
> + }
> +
> + if (version_supported >= 95 && version_supported < 98) {
> + bt_dev_warn(hdev, "AOSP quality report is not supported");
> + goto done;
> + }

I think you are bit too pedantic. Not that this bad in general, but you already established that your are >= 95 with the check above. So not need to repeat that here.

> +
> + if (version_supported >= 98) {

Same here. You already established that you are >= 98 with the check above.

> + if (skb->len < VENDOR_CAPA_0_98_SIZE)
> + goto length_error;
> +
> + /* The bluetooth_quality_report_support is defined at version
> + * v0.98. Refer to
> + * https://cs.android.com/android/platform/superproject/+/
> + * master:system/bt/gd/hci/controller.cc;l=477
> + */
> + if (rp->bluetooth_quality_report_support) {
> + hdev->aosp_quality_report = true;
> + bt_dev_info(hdev, "AOSP quality report is supported");
> + }
> + }
> +
> + goto done;
> +
> +length_error:
> + bt_dev_err(hdev, "AOSP capabilities length %d too short", skb->len);
>
> +done:
> kfree_skb(skb);
> }

Rest looks great. Either send me a new version or I fix it before applying.

Regards

Marcel

2021-11-02 18:42:30

by Marcel Holtmann

[permalink] [raw]
Subject: Re: [PATCH v7 2/2] Bluetooth: aosp: Support AOSP Bluetooth Quality Report

Hi Joseph,

> This patch adds the support of the AOSP Bluetooth Quality Report
> (BQR) events.
>
> Multiple vendors have supported the AOSP Bluetooth Quality Report.
> When a Bluetooth controller supports the capability, it can enable
> the aosp capability through hci_set_aosp_capable. Then hci_core will
> set up the hdev->aosp_set_quality_report callback through aosp_do_open
> if the controller responds to support the quality report capability.
>
> Note that Intel also supports a distinct telemetry quality report
> specification. Intel sets up the hdev->set_quality_report callback
> in the btusb driver module.
>
> Reviewed-by: Miao-chen Chou <[email protected]>
> Signed-off-by: Joseph Hwang <[email protected]>
>
> ---
>
> Changes in v7:
> - Remove the unnecessary debug print.
>
> Changes in v6:
> - Use the decimal version instead of hexadecimal version to be
> consistent with the AOSP specification.
> - Move the code of checking the bluetooth_quality_report_support field
> to the previous patch.
>
> Changes in v5:
> - Fix the patch per
> [RFC PATCH] Bluetooth: Add framework for AOSP quality report setting
> - Declare aosp_set_quality_report.
> - Use aosp_do_open() to set hdev->aosp_set_quality_report.
> - Add aosp_has_quality_report().
> - In mgmt, use hdev->aosp_set_quality_report and
> hdev->set_quality_report separately.
>
> Changes in v4:
> - Move the AOSP BQR support from the driver level to net/bluetooth/aosp.
> - Fix the drivers to use hci_set_aosp_capable to enable aosp.
> - Add Mediatek to support the capability too.
>
> Changes in v3:
> - Fix the auto build test ERROR
> "undefined symbol: btandroid_set_quality_report" that occurred
> with some kernel configs.
> - Note that the mgmt-tester "Read Exp Feature - Success" failed.
> But on my test device, the same test passed. Please kindly let me
> know what may be going wrong. These patches do not actually
> modify read/set experimental features.
> - As to CheckPatch failed. No need to modify the MAINTAINERS file.
> Thanks.
>
> Changes in v2:
> - Fix the titles of patches 2/3 and 3/3 and reduce their lengths.
>
> net/bluetooth/aosp.c | 87 ++++++++++++++++++++++++++++++++++++++++++++
> net/bluetooth/aosp.h | 13 +++++++
> net/bluetooth/mgmt.c | 17 ++++++---
> 3 files changed, 112 insertions(+), 5 deletions(-)

patch has been applied to bluetooth-next tree.

Regards

Marcel

2021-11-02 18:42:31

by Marcel Holtmann

[permalink] [raw]
Subject: Re: [PATCH v7 1/2] Bluetooth: Add struct of reading AOSP vendor capabilities

Hi Joseph,

> This patch adds the struct of reading AOSP vendor capabilities.
> New capabilities are added incrementally. Note that the
> version_supported octets will be used to determine whether a
> capability has been defined for the version.
>
> Signed-off-by: Joseph Hwang <[email protected]>
>
> ---
>
> Changes in v7:
> - Use the full struct aosp_rp_le_get_vendor_capa. If the
> version_supported is >= 98, check bluetooth_quality_report_support.
> - Use __le16 and __le32.
> - Use proper bt_dev_err and bt_dev_warn per review comments.
> - Skip unnecessary bt_dev_dbg.
> - Remove unnecessary rp->status check.
> - Skip unnecessary check about version_supported on versions that we
> do not care about. For now, we only care about quality report support.
> - Add the define for the length of the struct.
> - Mediatek will submit a separate patch to enable aosp.
>
> Changes in v6:
> - Add historical versions of struct aosp_rp_le_get_vendor_capabilities.
> - Perform the basic check about the struct length.
> - Through the version, bluetooth_quality_report_support can be checked.
>
> Changes in v5:
> - This is a new patch.
> - Add struct aosp_rp_le_get_vendor_capabilities so that next patch
> can determine whether a particular capability is supported or not.
>
> include/net/bluetooth/hci_core.h | 1 +
> net/bluetooth/aosp.c | 83 +++++++++++++++++++++++++++++++-
> 2 files changed, 83 insertions(+), 1 deletion(-)

patch has been applied to bluetooth-next tree.

Regards

Marcel