On Thu, 2008-05-01 at 11:32 +0200, Michael Buesch wrote: > On Thursday 01 May 2008 11:08:06 Johannes Berg wrote: > > > > > Hm, unrelated to this... > > > But I am wondering what happens if the driver adds a device header to the skb. > > > Is that header then also passed up netif_rx()? > > > This doesn't happen for b43, as we use the DMA fragmentation to transmit the header, > > > but it might happen for zd1211rw and others. > > > > Hmm. I thought we said that it was supposed to be removed again by the > > hardware before TX status reporting. That's what most drivers seem to do > > anyway. > > Ok. I was not aware of that. Is that documented somewhere? I guess we can't WARN_ON()? Not sure. We could try to analyse the packet header and see if it's 802.11, or put a length into skb->cb (after my rework to put things into skb->cb we have a single byte free so we could check skb->len % 256) johannes
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