net: fix network driver ndo_start_xmit() return values (part 1)

Fix up drivers that return an errno value to qdisc_restart(), causing
qdisc_restart() to print a warning and requeue/retransmit the skb.

- xpnet: memory allocation error, intention is to drop
- ethoc: oversized packet, packet must be dropped
- ibmlana: skb freed: use after free
- rrunner: skb freed: use after free

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/net/rrunner.c b/drivers/net/rrunner.c
index d890829a9acc..81dbcbb910f4 100644
--- a/drivers/net/rrunner.c
+++ b/drivers/net/rrunner.c
@@ -1425,7 +1425,7 @@ static int rr_start_xmit(struct sk_buff *skb, struct net_device *dev)
                 if (!(new_skb = dev_alloc_skb(len + 8))) {
                         dev_kfree_skb(skb);
                         netif_wake_queue(dev);
-                        return -EBUSY;
+                        return NETDEV_TX_OK;
                 }
                 skb_reserve(new_skb, 8);
                 skb_put(new_skb, len);