From: Arseny Solokha <[email protected]>
Date: Fri, 5 Dec 2014 17:37:54 +0700
> @@ -2296,6 +2296,12 @@ static int gfar_start_xmit(struct sk_buff *skb, struct
> net_device *dev)
> 0,
> frag_len,
> DMA_TO_DEVICE);
> + if (unlikely(dma_mapping_error(priv->dev, bufaddr))) {
> + /* As DMA mapping failed, pretend the TX path
> + * is busy to retry later
> + */
> + return NETDEV_TX_BUSY;
> + }
You are not "busy", you are dropping the packet due to insufficient system
resources.
Therefore the appropriate thing to do is to free the SKB, increment
the drop statistical counter, and return NETDEV_TX_OK.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
