diff mbox series

Bluetooth: hci_sync: Cleanup hci_conn if it cannot be aborted

Message ID 20220421213309.3304447-1-luiz.dentz@gmail.com
State Superseded
Headers show
Series Bluetooth: hci_sync: Cleanup hci_conn if it cannot be aborted | expand

Commit Message

Luiz Augusto von Dentz April 21, 2022, 9:33 p.m. UTC 
From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

This attempts to cleanup the hci_conn if it cannot be aborted as
otherwise it would likely result in having the controller and host
stack out of sync with respect to connection handle.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
---
 include/net/bluetooth/hci_core.h |  2 +-
 net/bluetooth/hci_conn.c         | 32 ++++++++++++++++++++++++--------
 net/bluetooth/hci_event.c        | 13 ++++---------
 net/bluetooth/hci_sync.c         | 11 ++++++++++-
 4 files changed, 39 insertions(+), 19 deletions(-)

Comments

bluez.test.bot@gmail.com April 21, 2022, 9:42 p.m. UTC | #1 
This is an automated email and please do not reply to this email.

Dear Submitter,

Thank you for submitting the patches to the linux bluetooth mailing list.
While preparing the CI tests, the patches you submitted couldn't be applied to the current HEAD of the repository.

----- Output -----
error: patch failed: net/bluetooth/hci_event.c:3178
error: net/bluetooth/hci_event.c: patch does not apply
hint: Use 'git am --show-current-patch' to see the failed patch


Please resolve the issue and submit the patches again.


---
Regards,
Linux Bluetooth
diff mbox series

Patch

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 59815df1272a..64d3a63759a8 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1156,7 +1156,7 @@  int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 
 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 
-void hci_le_conn_failed(struct hci_conn *conn, u8 status);
+void hci_conn_failed(struct hci_conn *conn, u8 status);
 
 /*
  * hci_conn_get() and hci_conn_put() are used to control the life-time of an
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index cd51bf2a709b..882a7df13005 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -670,7 +670,7 @@  static void le_conn_timeout(struct work_struct *work)
 		/* Disable LE Advertising */
 		le_disable_advertising(hdev);
 		hci_dev_lock(hdev);
-		hci_le_conn_failed(conn, HCI_ERROR_ADVERTISING_TIMEOUT);
+		hci_conn_failed(conn, HCI_ERROR_ADVERTISING_TIMEOUT);
 		hci_dev_unlock(hdev);
 		return;
 	}
@@ -873,7 +873,7 @@  struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, uint8_t src_type)
 EXPORT_SYMBOL(hci_get_route);
 
 /* This function requires the caller holds hdev->lock */
-void hci_le_conn_failed(struct hci_conn *conn, u8 status)
+static void hci_le_conn_failed(struct hci_conn *conn, u8 status)
 {
 	struct hci_dev *hdev = conn->hdev;
 	struct hci_conn_params *params;
@@ -886,8 +886,6 @@  void hci_le_conn_failed(struct hci_conn *conn, u8 status)
 		params->conn = NULL;
 	}
 
-	conn->state = BT_CLOSED;
-
 	/* If the status indicates successful cancellation of
 	 * the attempt (i.e. Unknown Connection Id) there's no point of
 	 * notifying failure since we'll go back to keep trying to
@@ -899,10 +897,6 @@  void hci_le_conn_failed(struct hci_conn *conn, u8 status)
 		mgmt_connect_failed(hdev, &conn->dst, conn->type,
 				    conn->dst_type, status);
 
-	hci_connect_cfm(conn, status);
-
-	hci_conn_del(conn);
-
 	/* Since we may have temporarily stopped the background scanning in
 	 * favor of connection establishment, we should restart it.
 	 */
@@ -914,6 +908,28 @@  void hci_le_conn_failed(struct hci_conn *conn, u8 status)
 	hci_enable_advertising(hdev);
 }
 
+/* This function requires the caller holds hdev->lock */
+void hci_conn_failed(struct hci_conn *conn, u8 status)
+{
+	struct hci_dev *hdev = conn->hdev;
+
+	bt_dev_dbg(hdev, "status 0x%2.2x", status);
+
+	switch (conn->type) {
+	case LE_LINK:
+		hci_le_conn_failed(conn, status);
+		break;
+	case ACL_LINK:
+		mgmt_connect_failed(hdev, &conn->dst, conn->type,
+				    conn->dst_type, status);
+		break;
+	}
+
+	conn->state = BT_CLOSED;
+	hci_connect_cfm(conn, status);
+	hci_conn_del(conn);
+}
+
 static void create_le_conn_complete(struct hci_dev *hdev, void *data, int err)
 {
 	struct hci_conn *conn = data;
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 3002df41f16b..ad460f1da4ed 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -2834,7 +2834,7 @@  static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
 	bt_dev_dbg(hdev, "status 0x%2.2x", status);
 
 	/* All connection failure handling is taken care of by the
-	 * hci_le_conn_failed function which is triggered by the HCI
+	 * hci_conn_failed function which is triggered by the HCI
 	 * request completion callbacks used for connecting.
 	 */
 	if (status)
@@ -2859,7 +2859,7 @@  static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status)
 	bt_dev_dbg(hdev, "status 0x%2.2x", status);
 
 	/* All connection failure handling is taken care of by the
-	 * hci_le_conn_failed function which is triggered by the HCI
+	 * hci_conn_failed function which is triggered by the HCI
 	 * request completion callbacks used for connecting.
 	 */
 	if (status)
@@ -3178,12 +3178,7 @@  static void hci_conn_complete_evt(struct hci_dev *hdev, void *data,
 
 done:
 	if (ev->status) {
-		conn->state = BT_CLOSED;
-		if (conn->type == ACL_LINK)
-			mgmt_connect_failed(hdev, &conn->dst, conn->type,
-					    conn->dst_type, ev->status);
-		hci_connect_cfm(conn, ev->status);
-		hci_conn_del(conn);
+		hci_conn_failed(conn, ev->status);
 	} else if (ev->link_type == SCO_LINK) {
 		switch (conn->setting & SCO_AIRMODE_MASK) {
 		case SCO_AIRMODE_CVSD:
@@ -5621,7 +5616,7 @@  static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
 	}
 
 	if (status) {
-		hci_le_conn_failed(conn, status);
+		hci_conn_failed(conn, status);
 		goto unlock;
 	}
 
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 2d3b9adbd215..fa95eb2dcffa 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -4466,12 +4466,21 @@  static int hci_reject_conn_sync(struct hci_dev *hdev, struct hci_conn *conn,
 static int hci_abort_conn_sync(struct hci_dev *hdev, struct hci_conn *conn,
 			       u8 reason)
 {
+	int err;
+
 	switch (conn->state) {
 	case BT_CONNECTED:
 	case BT_CONFIG:
 		return hci_disconnect_sync(hdev, conn, reason);
 	case BT_CONNECT:
-		return hci_connect_cancel_sync(hdev, conn);
+		err = hci_connect_cancel_sync(hdev, conn);
+		/* Cleanup hci_conn object if it cannot be cancelled as it
+		 * likelly means the controller and host stack are out of sync.
+		 */
+		if (err)
+			hci_conn_failed(conn, err);
+
+		return err;
 	case BT_CONNECT2:
 		return hci_reject_conn_sync(hdev, conn, reason);
 	default: