[Bluetooth] Signal user-space for HIDP and BNEP socket errors
When using the HIDP or BNEP kernel support, the user-space needs to
know if the connection has been terminated for some reasons. Wake up
the application if that happens. Otherwise kernel and user-space are
no longer on the same page and weird behaviors can happen.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/net/bluetooth/bnep/core.c b/net/bluetooth/bnep/core.c
index f85d946..24e91eb 100644
--- a/net/bluetooth/bnep/core.c
+++ b/net/bluetooth/bnep/core.c
@@ -507,6 +507,11 @@
/* Delete network device */
unregister_netdev(dev);
+ /* Wakeup user-space polling for socket errors */
+ s->sock->sk->sk_err = EUNATCH;
+
+ wake_up_interruptible(s->sock->sk->sk_sleep);
+
/* Release the socket */
fput(s->sock->file);
diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
index 519cdb9..96434d7 100644
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -581,6 +581,12 @@
hid_free_device(session->hid);
}
+ /* Wakeup user-space polling for socket errors */
+ session->intr_sock->sk->sk_err = EUNATCH;
+ session->ctrl_sock->sk->sk_err = EUNATCH;
+
+ hidp_schedule(session);
+
fput(session->intr_sock->file);
wait_event_timeout(*(ctrl_sk->sk_sleep),
@@ -879,6 +885,10 @@
skb_queue_purge(&session->ctrl_transmit);
skb_queue_purge(&session->intr_transmit);
+ /* Wakeup user-space polling for socket errors */
+ session->intr_sock->sk->sk_err = EUNATCH;
+ session->ctrl_sock->sk->sk_err = EUNATCH;
+
/* Kill session thread */
atomic_inc(&session->terminate);
hidp_schedule(session);
