Bluetooth: Remove pending ACL connection attempts

With the last commit we moved to using the hci_sync queue for "Create
Connection" requests, removing the need for retrying the paging after
finished/failed "Create Connection" requests and after the end of
inquiries.

hci_conn_check_pending() was used to trigger this retry, we can remove it
now.

Note that we can also remove the special handling for COMMAND_DISALLOWED
errors in the completion handler of "Create Connection", because "Create
Connection" requests are now always serialized.

This is somewhat reverting commit 4c67bc74f016 ("[Bluetooth] Support
concurrent connect requests").

With this, the BT_CONNECT2 state of ACL hci_conn objects should now be
back to meaning only one thing: That we received a "Connection Request"
from another device (see hci_conn_request_evt), but the response to that
is going to be deferred.

Signed-off-by: Jonas Dreßler <verdre@v0yd.nl>
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 8f8dd91..34aa9d0 100644 (file)
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1480,7 +1480,6 @@ struct hci_conn *hci_conn_add_unset(struct hci_dev *hdev, int type,
                                    bdaddr_t *dst, u8 role);
 void hci_conn_del(struct hci_conn *conn);
 void hci_conn_hash_flush(struct hci_dev *hdev);
-void hci_conn_check_pending(struct hci_dev *hdev);
 
 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 void hci_chan_del(struct hci_chan *chan);

diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 816be76..a4beed8 100644 (file)
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -2592,22 +2592,6 @@ void hci_conn_hash_flush(struct hci_dev *hdev)
        }
 }
 
-/* Check pending connect attempts */
-void hci_conn_check_pending(struct hci_dev *hdev)
-{
-       struct hci_conn *conn;
-
-       BT_DBG("hdev %s", hdev->name);
-
-       hci_dev_lock(hdev);
-
-       conn = hci_conn_hash_lookup_state(hdev, ACL_LINK, BT_CONNECT2);
-       if (conn)
-               hci_acl_create_connection_sync(hdev, conn);
-
-       hci_dev_unlock(hdev);
-}
-
 static u32 get_link_mode(struct hci_conn *conn)
 {
        u32 link_mode = 0;

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 271c007..e7887ba 100644 (file)
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -118,8 +118,6 @@ static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data,
                hci_discovery_set_state(hdev, DISCOVERY_STOPPED);
        hci_dev_unlock(hdev);
 
-       hci_conn_check_pending(hdev);
-
        return rp->status;
 }
 
@@ -150,8 +148,6 @@ static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data,
 
        hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);
 
-       hci_conn_check_pending(hdev);
-
        return rp->status;
 }
 
@@ -2312,10 +2308,8 @@ static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
 {
        bt_dev_dbg(hdev, "status 0x%2.2x", status);
 
-       if (status) {
-               hci_conn_check_pending(hdev);
+       if (status)
                return;
-       }
 
        if (hci_sent_cmd_data(hdev, HCI_OP_INQUIRY))
                set_bit(HCI_INQUIRY, &hdev->flags);
@@ -2340,12 +2334,9 @@ static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
 
        if (status) {
                if (conn && conn->state == BT_CONNECT) {
-                       if (status != HCI_ERROR_COMMAND_DISALLOWED || conn->attempt > 2) {
-                               conn->state = BT_CLOSED;
-                               hci_connect_cfm(conn, status);
-                               hci_conn_del(conn);
-                       } else
-                               conn->state = BT_CONNECT2;
+                       conn->state = BT_CLOSED;
+                       hci_connect_cfm(conn, status);
+                       hci_conn_del(conn);
                }
        } else {
                if (!conn) {
@@ -3035,8 +3026,6 @@ static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data,
 
        bt_dev_dbg(hdev, "status 0x%2.2x", ev->status);
 
-       hci_conn_check_pending(hdev);
-
        if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
                return;
 
@@ -3258,8 +3247,6 @@ done:
 
 unlock:
        hci_dev_unlock(hdev);
-
-       hci_conn_check_pending(hdev);
 }
 
 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr)