[PATCH 1/2] Bluetooth: mgmt: Fix enabling SSP while powered off

Set SSP called when hdev is up but still has HCI_AUTO_OFF flag set will
only change dev_flags and enable feature in host but won't enable feature
in controller. As a result some devices will reject IO Capa Request due to
missing SSP Host Support flag in extended features and thus won't allow
SSP or fallback to legacy pairing.

This patch ensures HCI Write Simple Pairing Mode is sent when Set Powered is
called to clear HCI_AUTO_OFF flag.

Signed-off-by: Andrzej Kaczmarek <redacted>
---
 net/bluetooth/mgmt.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 05d4b83..ccc6716 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c

@@ -2891,6 +2891,12 @@ int mgmt_powered(struct hci_dev *hdev, u8 powered)
 		if (scan)
 			hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
 
+		if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) {
+			u8 ssp = 1;
+
+			hci_send_cmd(hdev, HCI_OP_WRITE_SSP_MODE, 1, &ssp);
+		}
+
 		update_class(hdev);
 		update_name(hdev, hdev->dev_name);
 		update_eir(hdev);

-- 
1.7.11.3

Set LE called when hdev is up but still has HCI_AUTO_OFF flag set will
only change dev_flags and enable feature in host but won't enable feature
in controller. As a resulit it's not possible to e.g. start LE only or
interleaved discovery due to missing LE Supported flag in local features.

This patch ensures HCI Write LE Host Supported is sent when Set Powered is
called to clear HCI_AUTO_OFF flag.

Signed-off-by: Andrzej Kaczmarek <redacted>
---
 net/bluetooth/mgmt.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index ccc6716..f73441f 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c

@@ -2897,6 +2897,17 @@ int mgmt_powered(struct hci_dev *hdev, u8 powered)
 			hci_send_cmd(hdev, HCI_OP_WRITE_SSP_MODE, 1, &ssp);
 		}
 
+		if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) {
+			struct hci_cp_write_le_host_supported cp;
+
+			memset(&cp, 0, sizeof(cp));
+			cp.le = 1;
+			cp.simul = !!(hdev->features[6] & LMP_SIMUL_LE_BR);
+
+			hci_send_cmd(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED,
+				     sizeof(cp), &cp);
+		}
+
 		update_class(hdev);
 		update_name(hdev, hdev->dev_name);
 		update_eir(hdev);

-- 
1.7.11.3

Hi Andrzej,

On Mon, Aug 27, 2012 at 04:47:30PM +0200, Andrzej Kaczmarek wrote:

Why memset is needed here?

Best regards 
Andrei Emeltchenko 

+			cp.le = 1;
+			cp.simul = !!(hdev->features[6] & LMP_SIMUL_LE_BR);
+
+			hci_send_cmd(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED,
+				     sizeof(cp), &cp);
+		}
+
 		update_class(hdev);
 		update_name(hdev, hdev->dev_name);
 		update_eir(hdev);
-- 
1.7.11.3

--
To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Hi Andrei,

On 08/28/2012 09:40 AM, Andrei Emeltchenko wrote:

Hi Andrzej,

On Mon, Aug 27, 2012 at 04:47:30PM +0200, Andrzej Kaczmarek wrote:

quoted

Set LE called when hdev is up but still has HCI_AUTO_OFF flag set will
only change dev_flags and enable feature in host but won't enable feature
in controller. As a resulit it's not possible to e.g. start LE only or
interleaved discovery due to missing LE Supported flag in local features.

This patch ensures HCI Write LE Host Supported is sent when Set Powered is
called to clear HCI_AUTO_OFF flag.

Signed-off-by: Andrzej Kaczmarek <redacted>
---
  net/bluetooth/mgmt.c | 11 +++++++++++
  1 file changed, 11 insertions(+)

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index ccc6716..f73441f 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c

@@ -2897,6 +2897,17 @@ int mgmt_powered(struct hci_dev *hdev, u8 powered)
  			hci_send_cmd(hdev, HCI_OP_WRITE_SSP_MODE, 1, &ssp);
  		}

+		if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) {
+			struct hci_cp_write_le_host_supported cp;
+
+			memset(&cp, 0, sizeof(cp));

Why memset is needed here?

Not really needed, I forgot to remove it after copy&paste from other 
code. I'll send v2 later with memset removed.

BR,
Andrzej