[PATCH 1/2] Bluetooth: Remove HCI_PI_MGMT_INIT flag for sockets

[PATCH 1/2] Bluetooth: Remove HCI_PI_MGMT_INIT flag for sockets

[johan.hedberg]

From: Johan Hedberg <johan.hedberg@intel.com>

This flag is of no use right now and is in fact harmful in that it
prevents the HCI_MGMT flag to be set for any controllers that may need
it after the first one that bluetoothd takes into use (the flag is
cleared for the first controller so any subsequent ones through the same
bluetoothd mgmt socket never get the HCI_MGMT flag set).

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
---
 include/net/bluetooth/hci_core.h |    4 ----
 net/bluetooth/hci_sock.c         |    1 -
 net/bluetooth/mgmt.c             |   18 ++++++++----------
 3 files changed, 8 insertions(+), 15 deletions(-)

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index facd7ed..25cb0a1 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1034,16 +1034,12 @@ int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
 /* HCI info for socket */
 #define hci_pi(sk) ((struct hci_pinfo *) sk)
 
-/* HCI socket flags */
-#define HCI_PI_MGMT_INIT	0
-
 struct hci_pinfo {
 	struct bt_sock    bt;
 	struct hci_dev    *hdev;
 	struct hci_filter filter;
 	__u32             cmsg_mask;
 	unsigned short   channel;
-	unsigned long     flags;
 };
 
 /* HCI security filter */
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index 8a814bc..63afd23 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -659,7 +659,6 @@ static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_le
 			goto done;
 		}
 
-		set_bit(HCI_PI_MGMT_INIT, &hci_pi(sk)->flags);
 		break;
 
 	case HCI_CHANNEL_MONITOR:
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index fa9a589..4b1efed 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -615,19 +615,17 @@ static void service_cache_off(struct work_struct *work)
 
 static void mgmt_init_hdev(struct sock *sk, struct hci_dev *hdev)
 {
-	if (!test_and_clear_bit(HCI_PI_MGMT_INIT, &hci_pi(sk)->flags))
+	if (test_and_set_bit(HCI_MGMT, &hdev->dev_flags))
 		return;
 
-	if (!test_and_set_bit(HCI_MGMT, &hdev->dev_flags)) {
-		INIT_DELAYED_WORK(&hdev->service_cache, service_cache_off);
+	INIT_DELAYED_WORK(&hdev->service_cache, service_cache_off);
 
-		/* Non-mgmt controlled devices get this bit set
-		 * implicitly so that pairing works for them, however
-		 * for mgmt we require user-space to explicitly enable
-		 * it
-		 */
-		clear_bit(HCI_PAIRABLE, &hdev->dev_flags);
-	}
+	/* Non-mgmt controlled devices get this bit set
+	 * implicitly so that pairing works for them, however
+	 * for mgmt we require user-space to explicitly enable
+	 * it
+	 */
+	clear_bit(HCI_PAIRABLE, &hdev->dev_flags);
 }
 
 static int read_controller_info(struct sock *sk, struct hci_dev *hdev,
-- 
1.7.9.1

[PATCH 2/2] Bluetooth: mgmt: Fix updating local name when powering on

[johan.hedberg]

From: Johan Hedberg <johan.hedberg@intel.com>

When powering on we need to apply whatever name has been set through
mgmt_set_local_name. The appropriate place for this is mgmt_powered()
and not hci_setup() since this needs to be applied also if the HCI init
sequence was already completed but the adapter was still "powered off"
from a mgmt perspective due the the HCI_AUTO_OFF still being set.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
---
 net/bluetooth/hci_event.c |    8 --------
 net/bluetooth/mgmt.c      |   22 ++++++++++++++--------
 2 files changed, 14 insertions(+), 16 deletions(-)

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index d6c41bb..6a817da 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -552,14 +552,6 @@ static void hci_setup(struct hci_dev *hdev)
 	if (hdev->hci_ver > BLUETOOTH_VER_1_1)
 		hci_send_cmd(hdev, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL);
 
-	if (!test_bit(HCI_SETUP, &hdev->dev_flags) &&
-					test_bit(HCI_MGMT, &hdev->dev_flags)) {
-		struct hci_cp_write_local_name cp;
-
-		memcpy(cp.name, hdev->dev_name, sizeof(cp.name));
-		hci_send_cmd(hdev, HCI_OP_WRITE_LOCAL_NAME, sizeof(cp), &cp);
-	}
-
 	if (hdev->features[6] & LMP_SIMPLE_PAIR) {
 		if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) {
 			u8 mode = 0x01;
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 4b1efed..4ca0092 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -2104,11 +2104,19 @@ static int user_passkey_neg_reply(struct sock *sk, struct hci_dev *hdev,
 					HCI_OP_USER_PASSKEY_NEG_REPLY, 0);
 }
 
+static int update_name(struct hci_dev *hdev, const char *name)
+{
+	struct hci_cp_write_local_name cp;
+
+	memcpy(cp.name, name, sizeof(cp.name));
+
+	return hci_send_cmd(hdev, HCI_OP_WRITE_LOCAL_NAME, sizeof(cp), &cp);
+}
+
 static int set_local_name(struct sock *sk, struct hci_dev *hdev, void *data,
 								u16 len)
 {
-	struct mgmt_cp_set_local_name *mgmt_cp = data;
-	struct hci_cp_write_local_name hci_cp;
+	struct mgmt_cp_set_local_name *cp = data;
 	struct pending_cmd *cmd;
 	int err;
 
@@ -2116,11 +2124,10 @@ static int set_local_name(struct sock *sk, struct hci_dev *hdev, void *data,
 
 	hci_dev_lock(hdev);
 
-	memcpy(hdev->short_name, mgmt_cp->short_name,
-						sizeof(hdev->short_name));
+	memcpy(hdev->short_name, cp->short_name, sizeof(hdev->short_name));
 
 	if (!hdev_is_powered(hdev)) {
-		memcpy(hdev->dev_name, mgmt_cp->name, sizeof(hdev->dev_name));
+		memcpy(hdev->dev_name, cp->name, sizeof(hdev->dev_name));
 
 		err = cmd_complete(sk, hdev->id, MGMT_OP_SET_LOCAL_NAME, 0,
 								data, len);
@@ -2139,9 +2146,7 @@ static int set_local_name(struct sock *sk, struct hci_dev *hdev, void *data,
 		goto failed;
 	}
 
-	memcpy(hci_cp.name, mgmt_cp->name, sizeof(hci_cp.name));
-	err = hci_send_cmd(hdev, HCI_OP_WRITE_LOCAL_NAME, sizeof(hci_cp),
-								&hci_cp);
+	err = update_name(hdev, cp->name);
 	if (err < 0)
 		mgmt_pending_remove(cmd);
 
@@ -2794,6 +2799,7 @@ int mgmt_powered(struct hci_dev *hdev, u8 powered)
 			hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
 
 		update_class(hdev);
+		update_name(hdev, hdev->dev_name);
 		update_eir(hdev);
 	} else {
 		u8 status = MGMT_STATUS_NOT_POWERED;
-- 
1.7.9.1

Re: [PATCH 1/2] Bluetooth: Remove HCI_PI_MGMT_INIT flag for sockets

[Marcel Holtmann]

Hi Johan,

> This flag is of no use right now and is in fact harmful in that it
> prevents the HCI_MGMT flag to be set for any controllers that may need
> it after the first one that bluetoothd takes into use (the flag is
> cleared for the first controller so any subsequent ones through the same
> bluetoothd mgmt socket never get the HCI_MGMT flag set).
> 
> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
> ---
>  include/net/bluetooth/hci_core.h |    4 ----
>  net/bluetooth/hci_sock.c         |    1 -
>  net/bluetooth/mgmt.c             |   18 ++++++++----------
>  3 files changed, 8 insertions(+), 15 deletions(-)

Acked-by: Marcel Holtmann <marcel@holtmann.org>

Regards

Marcel

Re: [PATCH 2/2] Bluetooth: mgmt: Fix updating local name when powering on

[Marcel Holtmann]

Hi Johan,

> When powering on we need to apply whatever name has been set through
> mgmt_set_local_name. The appropriate place for this is mgmt_powered()
> and not hci_setup() since this needs to be applied also if the HCI init
> sequence was already completed but the adapter was still "powered off"
> from a mgmt perspective due the the HCI_AUTO_OFF still being set.
> 
> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
> ---
>  net/bluetooth/hci_event.c |    8 --------
>  net/bluetooth/mgmt.c      |   22 ++++++++++++++--------
>  2 files changed, 14 insertions(+), 16 deletions(-)

Acked-by: Marcel Holtmann <marcel@holtmann.org>

Regards

Marcel