From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Date: Tue, 11 Apr 2017 19:21:00 +0000 (+0300)
Subject: Bluetooth: 6lowpan: Use netif APIs to flow control
X-Git-Tag: v4.14-rc1~1025^2~175^2~17
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f183e52b8ef3d62c795b0fe2228400ac48f6cae6;p=platform%2Fkernel%2Flinux-rpi.git

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>
---

diff --git a/net/bluetooth/6lowpan.c b/net/bluetooth/6lowpan.c
index 22bd936..dc7fda3 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)