Bluetooth: Fix printing errors if LE Connection times out

This fixes errors like bellow when LE Connection times out since that
is actually not a controller error:

 Bluetooth: hci0: Opcode 0x200d failed: -110
 Bluetooth: hci0: request failed to create LE connection: err -110

Instead the code shall properly detect if -ETIMEDOUT is returned and
send HCI_OP_LE_CREATE_CONN_CANCEL to give up on the connection.

Link: https://github.com/bluez/bluez/issues/340
Fixes: 8e8b92ee60de ("Bluetooth: hci_sync: Add hci_le_create_conn_sync")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 6ed9b4d..d5311ce 100644 (file)
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -954,6 +954,7 @@ enum {
        HCI_CONN_STK_ENCRYPT,
        HCI_CONN_AUTH_INITIATOR,
        HCI_CONN_DROP,
+       HCI_CONN_CANCEL,
        HCI_CONN_PARAM_REMOVAL_PEND,
        HCI_CONN_NEW_LINK_KEY,
        HCI_CONN_SCANNING,

diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 5af3f6b..e4aee59 100644 (file)
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -1233,6 +1233,8 @@ static void create_le_conn_complete(struct hci_dev *hdev, void *data, int err)
 {
        struct hci_conn *conn = data;
 
+       bt_dev_dbg(hdev, "err %d", err);
+
        hci_dev_lock(hdev);
 
        if (!err) {
@@ -1240,8 +1242,6 @@ static void create_le_conn_complete(struct hci_dev *hdev, void *data, int err)
                goto done;
        }
 
-       bt_dev_err(hdev, "request failed to create LE connection: err %d", err);
-
        /* Check if connection is still pending */
        if (conn != hci_lookup_le_connect(hdev))
                goto done;
@@ -2771,6 +2771,9 @@ int hci_abort_conn(struct hci_conn *conn, u8 reason)
 {
        int r = 0;
 
+       if (test_and_set_bit(HCI_CONN_CANCEL, &conn->flags))
+               return 0;
+
        switch (conn->state) {
        case BT_CONNECTED:
        case BT_CONFIG:

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index ad92a4b..e68f2a7 100644 (file)
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -2881,16 +2881,6 @@ static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr,
 
        conn->resp_addr_type = peer_addr_type;
        bacpy(&conn->resp_addr, peer_addr);
-
-       /* We don't want the connection attempt to stick around
-        * indefinitely since LE doesn't have a page timeout concept
-        * like BR/EDR. Set a timer for any connection that doesn't use
-        * the accept list for connecting.
-        */
-       if (filter_policy == HCI_LE_USE_PEER_ADDR)
-               queue_delayed_work(conn->hdev->workqueue,
-                                  &conn->le_conn_timeout,
-                                  conn->conn_timeout);
 }
 
 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status)
@@ -5902,6 +5892,12 @@ static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
        if (status)
                goto unlock;
 
+       /* Drop the connection if it has been aborted */
+       if (test_bit(HCI_CONN_CANCEL, &conn->flags)) {
+               hci_conn_drop(conn);
+               goto unlock;
+       }
+
        if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
                addr_type = BDADDR_LE_PUBLIC;
        else

diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 5a6aa16..632be12 100644 (file)
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -246,8 +246,9 @@ int __hci_cmd_sync_status_sk(struct hci_dev *hdev, u16 opcode, u32 plen,
 
        skb = __hci_cmd_sync_sk(hdev, opcode, plen, param, event, timeout, sk);
        if (IS_ERR(skb)) {
-               bt_dev_err(hdev, "Opcode 0x%4x failed: %ld", opcode,
-                               PTR_ERR(skb));
+               if (!event)
+                       bt_dev_err(hdev, "Opcode 0x%4x failed: %ld", opcode,
+                                  PTR_ERR(skb));
                return PTR_ERR(skb);
        }
 
@@ -5126,8 +5127,11 @@ static int hci_le_connect_cancel_sync(struct hci_dev *hdev,
        if (test_bit(HCI_CONN_SCANNING, &conn->flags))
                return 0;
 
+       if (test_and_set_bit(HCI_CONN_CANCEL, &conn->flags))
+               return 0;
+
        return __hci_cmd_sync_status(hdev, HCI_OP_LE_CREATE_CONN_CANCEL,
-                                    6, &conn->dst, HCI_CMD_TIMEOUT);
+                                    0, NULL, HCI_CMD_TIMEOUT);
 }
 
 static int hci_connect_cancel_sync(struct hci_dev *hdev, struct hci_conn *conn)
@@ -6102,6 +6106,9 @@ int hci_le_create_conn_sync(struct hci_dev *hdev, struct hci_conn *conn)
                                       conn->conn_timeout, NULL);
 
 done:
+       if (err == -ETIMEDOUT)
+               hci_le_connect_cancel_sync(hdev, conn);
+
        /* Re-enable advertising after the connection attempt is finished. */
        hci_resume_advertising_sync(hdev);
        return err;