On Mon, Sep 15, 2014 at 12:13:31PM +0200, Alexander Aring wrote:
...
>
> > if (ret == 1) {
> > - ret = process_data(skb, &hdr);
> > - if (ret == NET_RX_DROP)
> > + ret = process_data(&skb, &hdr);
> > + if (ret < 0)
> > goto drop;
> this function returning an errno, you can't return the errno here. goto
> drop returns the ret variable. Maybe just make a return NET_RX_DROP at
> drop. We should never return a different variable.
Oops, I looked at the wong please I mean before drop, when all things
are fine.
>
> Also this need to be drop_skb at several places in this code, we don't
> have a kfree_skb at process_data anymore. This leaks memory.
>
> > + } else {
> > + return NET_RX_SUCCESS;
> > }
> > break;
> > case LOWPAN_DISPATCH_FRAGN: /* next fragments headers */
> > ret = lowpan_frag_rcv(skb, LOWPAN_DISPATCH_FRAGN);
>
> same here.
> > if (ret == 1) {
> > - ret = process_data(skb, &hdr);
> > - if (ret == NET_RX_DROP)
> > + ret = process_data(&skb, &hdr);
> > + if (ret < 0)
> > goto drop;
>
> same here.
>
> > + } else {
> > + return NET_RX_SUCCESS;
> > }
> > break;
> > default:
> > @@ -515,7 +514,16 @@ static int lowpan_rcv(struct sk_buff *skb, struct
> > net_device *dev,
> > }
> > }
> >
If all things are fine, there is somewhere a return ret;
We should change it to return NET_RX_SUCCESS.
- Alex
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