On 06/27/2014 03:49 PM, Alexander Aring wrote:
> +
> +static void
> +at86rf230_rx(struct at86rf230_local *lp,
> + const u8 *data, u8 len)
> +{
> + u8 lqi;
> + struct sk_buff *skb;
> + u8 rx_local_buf[AT86RF2XX_MAX_BUF];
> +
> + memcpy(rx_local_buf, data, len);
> + enable_irq(lp->spi->irq);
> +
> + /* read full frame buffer and invalid lqi value to lowest
> + * indicator if frame was is in a corrupted state.
> + */
> + if (len < 2 || len > IEEE802154_MTU) {
if this condition occurs we need not be proceed further right ?
But the skbs allocated , copied the data etc,,,, :-)
> + lqi = 0;
> + len = IEEE802154_MTU;
> + dev_vdbg(&lp->spi->dev, "corrupted frame received\n");
> + } else {
> + lqi = rx_local_buf[len];
> + }
> +
> + skb = alloc_skb(IEEE802154_MTU, GFP_ATOMIC);
> + if (!skb) {
> + dev_vdbg(&lp->spi->dev, "failed to allocate sk_buff\n");
> + return;
> + }
> +
> + memcpy(skb_put(skb, len), rx_local_buf, len);
> +
> + /* We do not put CRC into the frame */
> + skb_trim(skb, len - 2);
> +
> + ieee802154_rx_irqsafe(lp->dev, skb, lqi);
> +}
> +
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