2022-03-31 03:33:21

by Luiz Augusto von Dentz

[permalink] [raw]
Subject: [PATCH v3 2/3] Bluetooth: Print broken quirks

From: Luiz Augusto von Dentz <[email protected]>

This prints warnings for controllers setting broken quirks to increase
their visibility and warn about broken controllers firmware that
probably needs updates to behave properly.

Signed-off-by: Luiz Augusto von Dentz <[email protected]>
---
net/bluetooth/hci_sync.c | 53 +++++++++++++++++++++++++++++++++++++---
1 file changed, 49 insertions(+), 4 deletions(-)

diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 8f4c5698913d..e97880d7bdb2 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -3825,6 +3825,54 @@ static int hci_init_sync(struct hci_dev *hdev)
return 0;
}

+#define HCI_QUIRK_BROKEN(_quirk, _desc) { HCI_QUIRK_BROKEN_##_quirk, _desc }
+
+static const struct {
+ unsigned long quirk;
+ const char *desc;
+} hci_broken_table[] = {
+ HCI_QUIRK_BROKEN(LOCAL_COMMANDS,
+ "HCI Read Local Supported Commands not supported"),
+ HCI_QUIRK_BROKEN(STORED_LINK_KEY,
+ "HCI Delete Stored Link Key command is advertised, "
+ "but not supported."),
+ HCI_QUIRK_BROKEN(ERR_DATA_REPORTING,
+ "HCI Read Default Erroneous Data Reporting command is "
+ "advertised, but not supported."),
+ HCI_QUIRK_BROKEN(READ_TRANSMIT_POWER,
+ "HCI Read Transmit Power Level command is advertised, "
+ "but not supported."),
+ HCI_QUIRK_BROKEN(FILTER_CLEAR_ALL,
+ "HCI Set Event Filter command not supported."),
+ HCI_QUIRK_BROKEN(ENHANCED_SETUP_SYNC_CONN,
+ "HCI Enhanced Setup Synchronous Connection command is "
+ "advertised, but not supported.")
+};
+
+static int hci_dev_setup_sync(struct hci_dev *hdev)
+{
+ size_t i;
+
+ bt_dev_dbg(hdev, "");
+
+ hci_sock_dev_event(hdev, HCI_DEV_SETUP);
+
+ if (hdev->setup) {
+ int ret;
+
+ ret = hdev->setup(hdev);
+ if (ret)
+ return ret;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(hci_broken_table); i++) {
+ if (test_bit(hci_broken_table[i].quirk, &hdev->quirks))
+ bt_dev_warn(hdev, "%s", hci_broken_table[i].desc);
+ }
+
+ return 0;
+}
+
int hci_dev_open_sync(struct hci_dev *hdev)
{
int ret = 0;
@@ -3887,10 +3935,7 @@ int hci_dev_open_sync(struct hci_dev *hdev)
test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks)) {
bool invalid_bdaddr;

- hci_sock_dev_event(hdev, HCI_DEV_SETUP);
-
- if (hdev->setup)
- ret = hdev->setup(hdev);
+ ret = hci_dev_setup_sync(hdev);

/* The transport driver can set the quirk to mark the
* BD_ADDR invalid before creating the HCI device or in
--
2.35.1


2022-04-03 13:32:53

by Marcel Holtmann

[permalink] [raw]
Subject: Re: [PATCH v3 2/3] Bluetooth: Print broken quirks

Hi Luiz,

> This prints warnings for controllers setting broken quirks to increase
> their visibility and warn about broken controllers firmware that
> probably needs updates to behave properly.
>
> Signed-off-by: Luiz Augusto von Dentz <[email protected]>
> ---
> net/bluetooth/hci_sync.c | 53 +++++++++++++++++++++++++++++++++++++---
> 1 file changed, 49 insertions(+), 4 deletions(-)
>
> diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
> index 8f4c5698913d..e97880d7bdb2 100644
> --- a/net/bluetooth/hci_sync.c
> +++ b/net/bluetooth/hci_sync.c
> @@ -3825,6 +3825,54 @@ static int hci_init_sync(struct hci_dev *hdev)
> return 0;
> }
>
> +#define HCI_QUIRK_BROKEN(_quirk, _desc) { HCI_QUIRK_BROKEN_##_quirk, _desc }
> +
> +static const struct {
> + unsigned long quirk;
> + const char *desc;
> +} hci_broken_table[] = {
> + HCI_QUIRK_BROKEN(LOCAL_COMMANDS,
> + "HCI Read Local Supported Commands not supported"),
> + HCI_QUIRK_BROKEN(STORED_LINK_KEY,
> + "HCI Delete Stored Link Key command is advertised, "
> + "but not supported."),
> + HCI_QUIRK_BROKEN(ERR_DATA_REPORTING,
> + "HCI Read Default Erroneous Data Reporting command is "
> + "advertised, but not supported."),
> + HCI_QUIRK_BROKEN(READ_TRANSMIT_POWER,
> + "HCI Read Transmit Power Level command is advertised, "
> + "but not supported."),
> + HCI_QUIRK_BROKEN(FILTER_CLEAR_ALL,
> + "HCI Set Event Filter command not supported."),
> + HCI_QUIRK_BROKEN(ENHANCED_SETUP_SYNC_CONN,
> + "HCI Enhanced Setup Synchronous Connection command is "
> + "advertised, but not supported.")
> +};
> +
> +static int hci_dev_setup_sync(struct hci_dev *hdev)
> +{
> + size_t i;
> +
> + bt_dev_dbg(hdev, "");
> +
> + hci_sock_dev_event(hdev, HCI_DEV_SETUP);
> +
> + if (hdev->setup) {
> + int ret;
> +
> + ret = hdev->setup(hdev);
> + if (ret)
> + return ret;
> + }
> +
> + for (i = 0; i < ARRAY_SIZE(hci_broken_table); i++) {
> + if (test_bit(hci_broken_table[i].quirk, &hdev->quirks))
> + bt_dev_warn(hdev, "%s", hci_broken_table[i].desc);
> + }
> +
> + return 0;
> +}
> +
> int hci_dev_open_sync(struct hci_dev *hdev)
> {
> int ret = 0;
> @@ -3887,10 +3935,7 @@ int hci_dev_open_sync(struct hci_dev *hdev)
> test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks)) {
> bool invalid_bdaddr;
>
> - hci_sock_dev_event(hdev, HCI_DEV_SETUP);
> -
> - if (hdev->setup)
> - ret = hdev->setup(hdev);
> + ret = hci_dev_setup_sync(hdev);

just put the code here instead of creating another helper function.

Regards

Marcel

2022-04-04 14:45:04

by Luiz Augusto von Dentz

[permalink] [raw]
Subject: Re: [PATCH v3 2/3] Bluetooth: Print broken quirks

Hi Marcel,

On Fri, Apr 1, 2022 at 10:29 AM Marcel Holtmann <[email protected]> wrote:
>
> Hi Luiz,
>
> > This prints warnings for controllers setting broken quirks to increase
> > their visibility and warn about broken controllers firmware that
> > probably needs updates to behave properly.
> >
> > Signed-off-by: Luiz Augusto von Dentz <[email protected]>
> > ---
> > net/bluetooth/hci_sync.c | 53 +++++++++++++++++++++++++++++++++++++---
> > 1 file changed, 49 insertions(+), 4 deletions(-)
> >
> > diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
> > index 8f4c5698913d..e97880d7bdb2 100644
> > --- a/net/bluetooth/hci_sync.c
> > +++ b/net/bluetooth/hci_sync.c
> > @@ -3825,6 +3825,54 @@ static int hci_init_sync(struct hci_dev *hdev)
> > return 0;
> > }
> >
> > +#define HCI_QUIRK_BROKEN(_quirk, _desc) { HCI_QUIRK_BROKEN_##_quirk, _desc }
> > +
> > +static const struct {
> > + unsigned long quirk;
> > + const char *desc;
> > +} hci_broken_table[] = {
> > + HCI_QUIRK_BROKEN(LOCAL_COMMANDS,
> > + "HCI Read Local Supported Commands not supported"),
> > + HCI_QUIRK_BROKEN(STORED_LINK_KEY,
> > + "HCI Delete Stored Link Key command is advertised, "
> > + "but not supported."),
> > + HCI_QUIRK_BROKEN(ERR_DATA_REPORTING,
> > + "HCI Read Default Erroneous Data Reporting command is "
> > + "advertised, but not supported."),
> > + HCI_QUIRK_BROKEN(READ_TRANSMIT_POWER,
> > + "HCI Read Transmit Power Level command is advertised, "
> > + "but not supported."),
> > + HCI_QUIRK_BROKEN(FILTER_CLEAR_ALL,
> > + "HCI Set Event Filter command not supported."),
> > + HCI_QUIRK_BROKEN(ENHANCED_SETUP_SYNC_CONN,
> > + "HCI Enhanced Setup Synchronous Connection command is "
> > + "advertised, but not supported.")
> > +};
> > +
> > +static int hci_dev_setup_sync(struct hci_dev *hdev)
> > +{
> > + size_t i;
> > +
> > + bt_dev_dbg(hdev, "");
> > +
> > + hci_sock_dev_event(hdev, HCI_DEV_SETUP);
> > +
> > + if (hdev->setup) {
> > + int ret;
> > +
> > + ret = hdev->setup(hdev);
> > + if (ret)
> > + return ret;
> > + }
> > +
> > + for (i = 0; i < ARRAY_SIZE(hci_broken_table); i++) {
> > + if (test_bit(hci_broken_table[i].quirk, &hdev->quirks))
> > + bt_dev_warn(hdev, "%s", hci_broken_table[i].desc);
> > + }
> > +
> > + return 0;
> > +}
> > +
> > int hci_dev_open_sync(struct hci_dev *hdev)
> > {
> > int ret = 0;
> > @@ -3887,10 +3935,7 @@ int hci_dev_open_sync(struct hci_dev *hdev)
> > test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks)) {
> > bool invalid_bdaddr;
> >
> > - hci_sock_dev_event(hdev, HCI_DEV_SETUP);
> > -
> > - if (hdev->setup)
> > - ret = hdev->setup(hdev);
> > + ret = hci_dev_setup_sync(hdev);
>
> just put the code here instead of creating another helper function.

Ive added another function since hci_dev_open_sync is quite big
already and it easier to find out where we call ->setup if it is a
separated function that does perform all the necessary checks and set
HCI_DEV_SETUP, I was actually considering moving the whole block under
the if statement so we avoid this weird goto setup_failed, but perhaps
you want any rewrite to be on its own patch to make it easier to
bisect?

> Regards
>
> Marcel
>


--
Luiz Augusto von Dentz