Bluetooth: Introduce L2CAP channel callback for suspending

Setting the BT_SK_SUSPEND socket flag from the L2CAP core is causing a
dependency on the socket. So instead of doing that, use a channel
callback into the socket handling to suspend.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index d7cd1dd..b0d7e4a 100644 (file)
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -593,6 +593,7 @@ struct l2cap_ops {
        void                    (*ready) (struct l2cap_chan *chan);
        void                    (*defer) (struct l2cap_chan *chan);
        void                    (*resume) (struct l2cap_chan *chan);
+       void                    (*suspend) (struct l2cap_chan *chan);
        void                    (*set_shutdown) (struct l2cap_chan *chan);
        long                    (*get_sndtimeo) (struct l2cap_chan *chan);
        struct sk_buff          *(*alloc_skb) (struct l2cap_chan *chan,

diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 01d65bc..a51844a 100644 (file)
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -1345,6 +1345,14 @@ static long l2cap_sock_get_sndtimeo_cb(struct l2cap_chan *chan)
        return sk->sk_sndtimeo;
 }
 
+static void l2cap_sock_suspend_cb(struct l2cap_chan *chan)
+{
+       struct sock *sk = chan->data;
+
+       set_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags);
+       sk->sk_state_change(sk);
+}
+
 static struct l2cap_ops l2cap_chan_ops = {
        .name           = "L2CAP Socket Interface",
        .new_connection = l2cap_sock_new_connection_cb,
@@ -1355,6 +1363,7 @@ static struct l2cap_ops l2cap_chan_ops = {
        .ready          = l2cap_sock_ready_cb,
        .defer          = l2cap_sock_defer_cb,
        .resume         = l2cap_sock_resume_cb,
+       .suspend        = l2cap_sock_suspend_cb,
        .set_shutdown   = l2cap_sock_set_shutdown_cb,
        .get_sndtimeo   = l2cap_sock_get_sndtimeo_cb,
        .alloc_skb      = l2cap_sock_alloc_skb_cb,