Bluetooth: add close() callback to l2cap_chan_ops

close() calls l2cap_sock_kill() on l2cap_sock.c

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

include/net/bluetooth/l2cap.h

@@ -364,6 +364,7 @@ struct l2cap_ops {
 
 	struct l2cap_chan	*(*new_connection) (void *data);
 	int			(*recv) (void *data, struct sk_buff *skb);
+	void			(*close) (void *data);
 };
 
 struct l2cap_conn {
@@ -469,8 +470,6 @@ int __l2cap_wait_ack(struct sock *sk);
 int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm);
 int l2cap_add_scid(struct l2cap_chan *chan,  __u16 scid);
 
-void l2cap_sock_kill(struct sock *sk);
-
 struct l2cap_chan *l2cap_chan_create(struct sock *sk);
 void l2cap_chan_close(struct l2cap_chan *chan, int reason);
 void l2cap_chan_destroy(struct l2cap_chan *chan);

net/bluetooth/l2cap_core.c

@@ -254,7 +254,7 @@ static void l2cap_chan_timeout(unsigned long arg)
 
 	bh_unlock_sock(sk);
 
-	l2cap_sock_kill(sk);
+	chan->ops->close(chan->data);
 	sock_put(sk);
 }
 
@@ -391,11 +391,12 @@ static void l2cap_chan_cleanup_listen(struct sock *parent)
 
 	/* Close not yet accepted channels */
 	while ((sk = bt_accept_dequeue(parent, NULL))) {
-		l2cap_chan_clear_timer(l2cap_pi(sk)->chan);
+		struct l2cap_chan *chan = l2cap_pi(sk)->chan;
+		l2cap_chan_clear_timer(chan);
 		lock_sock(sk);
-		l2cap_chan_close(l2cap_pi(sk)->chan, ECONNRESET);
+		l2cap_chan_close(chan, ECONNRESET);
 		release_sock(sk);
-		l2cap_sock_kill(sk);
+		chan->ops->close(chan->data);
 	}
 
 	parent->sk_state = BT_CLOSED;
@@ -993,7 +994,7 @@ static void l2cap_conn_del(struct hci_conn *hcon, int err)
 		bh_lock_sock(sk);
 		l2cap_chan_del(chan, err);
 		bh_unlock_sock(sk);
-		l2cap_sock_kill(sk);
+		chan->ops->close(chan->data);
 	}
 
 	if (conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_SENT)
@@ -2339,7 +2340,7 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd
 	if (__l2cap_get_chan_by_dcid(conn, scid)) {
 		write_unlock_bh(&conn->chan_lock);
 		sock_set_flag(sk, SOCK_ZAPPED);
-		l2cap_sock_kill(sk);
+		chan->ops->close(chan->data);
 		goto response;
 	}
 
@@ -2712,7 +2713,7 @@ static inline int l2cap_disconnect_req(struct l2cap_conn *conn, struct l2cap_cmd
 	l2cap_chan_del(chan, ECONNRESET);
 	bh_unlock_sock(sk);
 
-	l2cap_sock_kill(sk);
+	chan->ops->close(chan->data);
 	return 0;
 }
 
@@ -2746,7 +2747,7 @@ static inline int l2cap_disconnect_rsp(struct l2cap_conn *conn, struct l2cap_cmd
 	l2cap_chan_del(chan, 0);
 	bh_unlock_sock(sk);
 
-	l2cap_sock_kill(sk);
+	chan->ops->close(chan->data);
 	return 0;
 }
 

net/bluetooth/l2cap_sock.c

@@ -713,7 +713,7 @@ static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct ms
 /* Kill socket (only if zapped and orphan)
  * Must be called on unlocked socket.
  */
-void l2cap_sock_kill(struct sock *sk)
+static void l2cap_sock_kill(struct sock *sk)
 {
 	if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket)
 		return;
@@ -796,10 +796,18 @@ static int l2cap_sock_recv_cb(void *data, struct sk_buff *skb)
 	return sock_queue_rcv_skb(sk, skb);
 }
 
+static void l2cap_sock_close_cb(void *data)
+{
+	struct sock *sk = data;
+
+	l2cap_sock_kill(sk);
+}
+
 static struct l2cap_ops l2cap_chan_ops = {
 	.name		= "L2CAP Socket Interface",
 	.new_connection	= l2cap_sock_new_connection_cb,
 	.recv		= l2cap_sock_recv_cb,
+	.close		= l2cap_sock_close_cb,
 };
 
 static void l2cap_sock_destruct(struct sock *sk)