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>

1 files changed, 9 insertions, 0 deletions

diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 01d65bc99b0c..a51844a8c5eb 100644
--- 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,