linux-kernel - [PATCH 6/6] 6lowpan: return the dev_queue_xmit() return value from lowpan

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Message-Id: <1364928481-1813-7-git-send-email-alan@signal11.us>
Date:	Tue,  2 Apr 2013 14:48:01 -0400
From:	Alan Ott <alan@...nal11.us>
To:	Alexander Smirnov <alex.bluesman.smirnov@...il.com>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	"David S. Miller" <davem@...emloft.net>
Cc:	linux-zigbee-devel@...ts.sourceforge.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, Alan Ott <alan@...nal11.us>
Subject: [PATCH 6/6] 6lowpan: return the dev_queue_xmit() return value from lowpan_xmit()

dev_queue_xmit() will return a positive value if the packet could not be
queued, often because the real network device (in our case the mac802154
wpan device) has its queue stopped.  lowpan_xmit() should return that value
to the higher layer so the higher layer will retry sending the packet.

Signed-off-by: Alan Ott <alan@...nal11.us>
---
 net/ieee802154/6lowpan.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c
index a68c792..55e1fd5 100644
--- a/net/ieee802154/6lowpan.c
+++ b/net/ieee802154/6lowpan.c
@@ -1142,7 +1142,7 @@ out:
 	if (err)
 		pr_debug("ERROR: xmit failed\n");
 
-	return (err < 0 ? NETDEV_TX_BUSY : NETDEV_TX_OK);
+	return (err < 0) ? NET_XMIT_DROP : err;
 }
 
 static struct wpan_phy *lowpan_get_phy(const struct net_device *dev)
-- 
1.7.11.2

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