[v2,4/4] 6lowpan: handle dev_queue_xmit() error code properly

Message ID 1364997658-16498-5-git-send-email-alan@signal11.us
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Alan Ott April 3, 2013, 2 p.m.
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 handle the
positive return code (for the debug statement) and return that value to
the higher layer so the higher layer will retry sending the packet.

Signed-off-by: Alan Ott <alan@signal11.us>
 net/ieee802154/6lowpan.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)


diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c
index e1b4580..55e1fd5 100644
--- a/net/ieee802154/6lowpan.c
+++ b/net/ieee802154/6lowpan.c
@@ -1139,10 +1139,10 @@  static netdev_tx_t lowpan_xmit(struct sk_buff *skb, struct net_device *dev)
-	if (err < 0)
+	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)