Bluetooth: 6lowpan: Use netif APIs to flow control

Rely on netif_wake_queue and netif_stop_queue to flow control when
transmit resources are unavailable.

Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 16 insertions, 0 deletions

diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c
index 22bd936ed2ce..dc7fda307b15 100644
--- a/net/bluetooth/6lowpan.c
+++ b/net/bluetooth/6lowpan.c
@@ -867,12 +867,28 @@ static struct sk_buff *chan_alloc_skb_cb(struct l2cap_chan *chan,
 
 static void chan_suspend_cb(struct l2cap_chan *chan)
 {
+        struct lowpan_btle_dev *dev;
+
         BT_DBG("chan %p suspend", chan);
+
+        dev = lookup_dev(chan->conn);
+        if (!dev || !dev->netdev)
+                return;
+
+        netif_stop_queue(dev->netdev);
 }
 
 static void chan_resume_cb(struct l2cap_chan *chan)
 {
+        struct lowpan_btle_dev *dev;
+
         BT_DBG("chan %p resume", chan);
+
+        dev = lookup_dev(chan->conn);
+        if (!dev || !dev->netdev)
+                return;
+
+        netif_wake_queue(dev->netdev);
 }
 
 static long chan_get_sndtimeo_cb(struct l2cap_chan *chan)